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a3f97cbb | 1 | /* Output Dwarf2 format symbol table information from the GNU C compiler. |
06ceef4e RK |
2 | Copyright (C) 1992, 1993, 1995, 1996, 1997, 1998, 1999, 2000 |
3 | Free Software Foundation, Inc. | |
e9a25f70 JL |
4 | Contributed by Gary Funck (gary@intrepid.com). |
5 | Derived from DWARF 1 implementation of Ron Guilmette (rfg@monkeys.com). | |
469ac993 | 6 | Extensively modified by Jason Merrill (jason@cygnus.com). |
a3f97cbb JW |
7 | |
8 | This file is part of GNU CC. | |
9 | ||
10 | GNU CC is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2, or (at your option) | |
13 | any later version. | |
14 | ||
15 | GNU CC is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with GNU CC; see the file COPYING. If not, write to | |
5f38fdda JL |
22 | the Free Software Foundation, 59 Temple Place - Suite 330, |
23 | Boston, MA 02111-1307, USA. */ | |
a3f97cbb | 24 | |
a96c67ec | 25 | /* TODO: Implement .debug_str handling, and share entries somehow. |
348bb3c7 JM |
26 | Emit .debug_line header even when there are no functions, since |
27 | the file numbers are used by .debug_info. Alternately, leave | |
28 | out locations for types and decls. | |
29 | Avoid talking about ctors and op= for PODs. | |
30 | Factor out common prologue sequences into multiple CIEs. */ | |
31 | ||
3f76745e JM |
32 | /* The first part of this file deals with the DWARF 2 frame unwind |
33 | information, which is also used by the GCC efficient exception handling | |
34 | mechanism. The second part, controlled only by an #ifdef | |
35 | DWARF2_DEBUGGING_INFO, deals with the other DWARF 2 debugging | |
36 | information. */ | |
37 | ||
0021b564 | 38 | #include "config.h" |
670ee920 | 39 | #include "system.h" |
0021b564 | 40 | #include "defaults.h" |
a3f97cbb JW |
41 | #include "tree.h" |
42 | #include "flags.h" | |
43 | #include "rtl.h" | |
44 | #include "hard-reg-set.h" | |
45 | #include "regs.h" | |
46 | #include "insn-config.h" | |
47 | #include "reload.h" | |
48 | #include "output.h" | |
71dfc51f | 49 | #include "expr.h" |
3f76745e | 50 | #include "except.h" |
a7cc7f29 | 51 | #include "dwarf2.h" |
76ead72b | 52 | #include "dwarf2out.h" |
10f0ad3d | 53 | #include "toplev.h" |
1865dbb5 | 54 | #include "varray.h" |
951a525f | 55 | #include "ggc.h" |
881c6935 | 56 | #include "md5.h" |
57bed152 | 57 | #include "tm_p.h" |
a3f97cbb | 58 | |
0021b564 JM |
59 | /* Decide whether we want to emit frame unwind information for the current |
60 | translation unit. */ | |
61 | ||
62 | int | |
63 | dwarf2out_do_frame () | |
64 | { | |
65 | return (write_symbols == DWARF2_DEBUG | |
9ec36da5 | 66 | #ifdef DWARF2_FRAME_INFO |
556273e0 | 67 | || DWARF2_FRAME_INFO |
9ec36da5 | 68 | #endif |
0021b564 | 69 | #ifdef DWARF2_UNWIND_INFO |
14a774a9 | 70 | || flag_unwind_tables |
0021b564 JM |
71 | || (flag_exceptions && ! exceptions_via_longjmp) |
72 | #endif | |
73 | ); | |
74 | } | |
75 | ||
76 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) | |
77 | ||
eaf95893 RK |
78 | /* How to start an assembler comment. */ |
79 | #ifndef ASM_COMMENT_START | |
80 | #define ASM_COMMENT_START ";#" | |
81 | #endif | |
82 | ||
a3f97cbb JW |
83 | typedef struct dw_cfi_struct *dw_cfi_ref; |
84 | typedef struct dw_fde_struct *dw_fde_ref; | |
85 | typedef union dw_cfi_oprnd_struct *dw_cfi_oprnd_ref; | |
a3f97cbb JW |
86 | |
87 | /* Call frames are described using a sequence of Call Frame | |
88 | Information instructions. The register number, offset | |
89 | and address fields are provided as possible operands; | |
90 | their use is selected by the opcode field. */ | |
71dfc51f | 91 | |
a3f97cbb | 92 | typedef union dw_cfi_oprnd_struct |
71dfc51f RK |
93 | { |
94 | unsigned long dw_cfi_reg_num; | |
95 | long int dw_cfi_offset; | |
d3e3972c | 96 | const char *dw_cfi_addr; |
7d9d8943 | 97 | struct dw_loc_descr_struct *dw_cfi_loc; |
71dfc51f | 98 | } |
a3f97cbb JW |
99 | dw_cfi_oprnd; |
100 | ||
101 | typedef struct dw_cfi_struct | |
71dfc51f RK |
102 | { |
103 | dw_cfi_ref dw_cfi_next; | |
104 | enum dwarf_call_frame_info dw_cfi_opc; | |
105 | dw_cfi_oprnd dw_cfi_oprnd1; | |
106 | dw_cfi_oprnd dw_cfi_oprnd2; | |
107 | } | |
a3f97cbb JW |
108 | dw_cfi_node; |
109 | ||
7d9d8943 AM |
110 | /* This is how we define the location of the CFA. We use to handle it |
111 | as REG + OFFSET all the time, but now it can be more complex. | |
112 | It can now be either REG + CFA_OFFSET or *(REG + BASE_OFFSET) + CFA_OFFSET. | |
556273e0 | 113 | Instead of passing around REG and OFFSET, we pass a copy |
7d9d8943 AM |
114 | of this structure. */ |
115 | typedef struct cfa_loc | |
116 | { | |
556273e0 | 117 | unsigned long reg; |
7d9d8943 AM |
118 | long offset; |
119 | long base_offset; | |
120 | int indirect; /* 1 if CFA is accessed via a dereference. */ | |
121 | } dw_cfa_location; | |
122 | ||
a3f97cbb | 123 | /* All call frame descriptions (FDE's) in the GCC generated DWARF |
4b674448 | 124 | refer to a single Common Information Entry (CIE), defined at |
a3f97cbb JW |
125 | the beginning of the .debug_frame section. This used of a single |
126 | CIE obviates the need to keep track of multiple CIE's | |
127 | in the DWARF generation routines below. */ | |
71dfc51f | 128 | |
a3f97cbb | 129 | typedef struct dw_fde_struct |
71dfc51f | 130 | { |
d3e3972c KG |
131 | const char *dw_fde_begin; |
132 | const char *dw_fde_current_label; | |
133 | const char *dw_fde_end; | |
71dfc51f | 134 | dw_cfi_ref dw_fde_cfi; |
737faf14 | 135 | int nothrow; |
71dfc51f | 136 | } |
a3f97cbb JW |
137 | dw_fde_node; |
138 | ||
a3f97cbb JW |
139 | /* Maximum size (in bytes) of an artificially generated label. */ |
140 | #define MAX_ARTIFICIAL_LABEL_BYTES 30 | |
141 | ||
a1a4189d | 142 | /* The size of the target's pointer type. */ |
a3f97cbb | 143 | #ifndef PTR_SIZE |
a9d38797 | 144 | #define PTR_SIZE (POINTER_SIZE / BITS_PER_UNIT) |
a3f97cbb JW |
145 | #endif |
146 | ||
a1a4189d JB |
147 | /* The size of addresses as they appear in the Dwarf 2 data. |
148 | Some architectures use word addresses to refer to code locations, | |
149 | but Dwarf 2 info always uses byte addresses. On such machines, | |
150 | Dwarf 2 addresses need to be larger than the architecture's | |
151 | pointers. */ | |
152 | #ifndef DWARF2_ADDR_SIZE | |
153 | #define DWARF2_ADDR_SIZE (POINTER_SIZE / BITS_PER_UNIT) | |
154 | #endif | |
155 | ||
7e23cb16 | 156 | /* The size in bytes of a DWARF field indicating an offset or length |
a1a4189d JB |
157 | relative to a debug info section, specified to be 4 bytes in the |
158 | DWARF-2 specification. The SGI/MIPS ABI defines it to be the same | |
b13fe8bf | 159 | as PTR_SIZE. */ |
71dfc51f | 160 | |
7e23cb16 JM |
161 | #ifndef DWARF_OFFSET_SIZE |
162 | #define DWARF_OFFSET_SIZE 4 | |
163 | #endif | |
164 | ||
9a666dda JM |
165 | #define DWARF_VERSION 2 |
166 | ||
7e23cb16 JM |
167 | /* Round SIZE up to the nearest BOUNDARY. */ |
168 | #define DWARF_ROUND(SIZE,BOUNDARY) \ | |
262b6384 | 169 | ((((SIZE) + (BOUNDARY) - 1) / (BOUNDARY)) * (BOUNDARY)) |
a3f97cbb | 170 | |
a3f97cbb | 171 | /* Offsets recorded in opcodes are a multiple of this alignment factor. */ |
27c35f4b | 172 | #ifndef DWARF_CIE_DATA_ALIGNMENT |
469ac993 | 173 | #ifdef STACK_GROWS_DOWNWARD |
08cb3d38 | 174 | #define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD)) |
469ac993 | 175 | #else |
08cb3d38 | 176 | #define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD) |
469ac993 | 177 | #endif |
27c35f4b | 178 | #endif /* not DWARF_CIE_DATA_ALIGNMENT */ |
a3f97cbb | 179 | |
3f76745e JM |
180 | /* A pointer to the base of a table that contains frame description |
181 | information for each routine. */ | |
182 | static dw_fde_ref fde_table; | |
a3f97cbb | 183 | |
3f76745e JM |
184 | /* Number of elements currently allocated for fde_table. */ |
185 | static unsigned fde_table_allocated; | |
a94dbf2c | 186 | |
3f76745e JM |
187 | /* Number of elements in fde_table currently in use. */ |
188 | static unsigned fde_table_in_use; | |
a3f97cbb | 189 | |
3f76745e JM |
190 | /* Size (in elements) of increments by which we may expand the |
191 | fde_table. */ | |
192 | #define FDE_TABLE_INCREMENT 256 | |
a3f97cbb | 193 | |
a94dbf2c JM |
194 | /* A list of call frame insns for the CIE. */ |
195 | static dw_cfi_ref cie_cfi_head; | |
196 | ||
a3f97cbb JW |
197 | /* The number of the current function definition for which debugging |
198 | information is being generated. These numbers range from 1 up to the | |
199 | maximum number of function definitions contained within the current | |
200 | compilation unit. These numbers are used to create unique label id's | |
201 | unique to each function definition. */ | |
4f988ea2 | 202 | static unsigned current_funcdef_number = 0; |
a3f97cbb JW |
203 | |
204 | /* Some DWARF extensions (e.g., MIPS/SGI) implement a subprogram | |
205 | attribute that accelerates the lookup of the FDE associated | |
556273e0 | 206 | with the subprogram. This variable holds the table index of the FDE |
a3f97cbb JW |
207 | associated with the current function (body) definition. */ |
208 | static unsigned current_funcdef_fde; | |
209 | ||
a3f97cbb | 210 | /* Forward declarations for functions defined in this file. */ |
71dfc51f | 211 | |
83d2b3b9 KG |
212 | static char *stripattributes PARAMS ((const char *)); |
213 | static const char *dwarf_cfi_name PARAMS ((unsigned)); | |
214 | static dw_cfi_ref new_cfi PARAMS ((void)); | |
215 | static void add_cfi PARAMS ((dw_cfi_ref *, dw_cfi_ref)); | |
216 | static unsigned long size_of_uleb128 PARAMS ((unsigned long)); | |
217 | static unsigned long size_of_sleb128 PARAMS ((long)); | |
218 | static void output_uleb128 PARAMS ((unsigned long)); | |
219 | static void output_sleb128 PARAMS ((long)); | |
d3e3972c | 220 | static void add_fde_cfi PARAMS ((const char *, dw_cfi_ref)); |
7d9d8943 AM |
221 | static void lookup_cfa_1 PARAMS ((dw_cfi_ref, dw_cfa_location *)); |
222 | static void lookup_cfa PARAMS ((dw_cfa_location *)); | |
d3e3972c KG |
223 | static void reg_save PARAMS ((const char *, unsigned, |
224 | unsigned, long)); | |
83d2b3b9 | 225 | static void initial_return_save PARAMS ((rtx)); |
5e640c56 | 226 | static long stack_adjust_offset PARAMS ((rtx)); |
83d2b3b9 KG |
227 | static void output_cfi PARAMS ((dw_cfi_ref, dw_fde_ref)); |
228 | static void output_call_frame_info PARAMS ((int)); | |
83d2b3b9 | 229 | static void dwarf2out_stack_adjust PARAMS ((rtx)); |
d3e3972c | 230 | static void dwarf2out_frame_debug_expr PARAMS ((rtx, const char *)); |
a3f97cbb | 231 | |
7d9d8943 AM |
232 | /* Support for complex CFA locations. */ |
233 | static void output_cfa_loc PARAMS ((dw_cfi_ref)); | |
556273e0 | 234 | static void get_cfa_from_loc_descr PARAMS ((dw_cfa_location *, |
7d9d8943 AM |
235 | struct dw_loc_descr_struct *)); |
236 | static struct dw_loc_descr_struct *build_cfa_loc | |
237 | PARAMS ((dw_cfa_location *)); | |
238 | static void def_cfa_1 PARAMS ((const char *, dw_cfa_location *)); | |
239 | ||
a3f97cbb JW |
240 | /* Definitions of defaults for assembler-dependent names of various |
241 | pseudo-ops and section names. | |
242 | Theses may be overridden in the tm.h file (if necessary) for a particular | |
243 | assembler. */ | |
71dfc51f | 244 | |
0021b564 | 245 | #ifdef OBJECT_FORMAT_ELF |
a3f97cbb | 246 | #ifndef UNALIGNED_SHORT_ASM_OP |
0a3e1f45 | 247 | #define UNALIGNED_SHORT_ASM_OP "\t.2byte\t" |
a3f97cbb JW |
248 | #endif |
249 | #ifndef UNALIGNED_INT_ASM_OP | |
0a3e1f45 | 250 | #define UNALIGNED_INT_ASM_OP "\t.4byte\t" |
a3f97cbb | 251 | #endif |
7e23cb16 | 252 | #ifndef UNALIGNED_DOUBLE_INT_ASM_OP |
0a3e1f45 | 253 | #define UNALIGNED_DOUBLE_INT_ASM_OP "\t.8byte\t" |
7e23cb16 | 254 | #endif |
0021b564 JM |
255 | #endif /* OBJECT_FORMAT_ELF */ |
256 | ||
a3f97cbb | 257 | #ifndef ASM_BYTE_OP |
0a3e1f45 | 258 | #define ASM_BYTE_OP "\t.byte\t" |
a3f97cbb JW |
259 | #endif |
260 | ||
7e23cb16 JM |
261 | /* Data and reference forms for relocatable data. */ |
262 | #define DW_FORM_data (DWARF_OFFSET_SIZE == 8 ? DW_FORM_data8 : DW_FORM_data4) | |
263 | #define DW_FORM_ref (DWARF_OFFSET_SIZE == 8 ? DW_FORM_ref8 : DW_FORM_ref4) | |
264 | ||
a3f97cbb JW |
265 | /* Pseudo-op for defining a new section. */ |
266 | #ifndef SECTION_ASM_OP | |
0a3e1f45 | 267 | #define SECTION_ASM_OP "\t.section\t" |
a3f97cbb JW |
268 | #endif |
269 | ||
270 | /* The default format used by the ASM_OUTPUT_SECTION macro (see below) to | |
271 | print the SECTION_ASM_OP and the section name. The default here works for | |
272 | almost all svr4 assemblers, except for the sparc, where the section name | |
273 | must be enclosed in double quotes. (See sparcv4.h). */ | |
274 | #ifndef SECTION_FORMAT | |
c53aa195 JM |
275 | #ifdef PUSHSECTION_FORMAT |
276 | #define SECTION_FORMAT PUSHSECTION_FORMAT | |
277 | #else | |
e8638df0 | 278 | #define SECTION_FORMAT "%s%s\n" |
c53aa195 | 279 | #endif |
a3f97cbb JW |
280 | #endif |
281 | ||
a3f97cbb JW |
282 | #ifndef FRAME_SECTION |
283 | #define FRAME_SECTION ".debug_frame" | |
284 | #endif | |
a3f97cbb | 285 | |
5c90448c JM |
286 | #ifndef FUNC_BEGIN_LABEL |
287 | #define FUNC_BEGIN_LABEL "LFB" | |
a3f97cbb | 288 | #endif |
5c90448c JM |
289 | #ifndef FUNC_END_LABEL |
290 | #define FUNC_END_LABEL "LFE" | |
a3f97cbb | 291 | #endif |
a6ab3aad JM |
292 | #define CIE_AFTER_SIZE_LABEL "LSCIE" |
293 | #define CIE_END_LABEL "LECIE" | |
2ed2af28 | 294 | #define CIE_LENGTH_LABEL "LLCIE" |
a6ab3aad JM |
295 | #define FDE_AFTER_SIZE_LABEL "LSFDE" |
296 | #define FDE_END_LABEL "LEFDE" | |
2ed2af28 | 297 | #define FDE_LENGTH_LABEL "LLFDE" |
881c6935 | 298 | #define DIE_LABEL_PREFIX "DW" |
a3f97cbb | 299 | |
a3f97cbb JW |
300 | /* Definitions of defaults for various types of primitive assembly language |
301 | output operations. These may be overridden from within the tm.h file, | |
956d6950 | 302 | but typically, that is unnecessary. */ |
71dfc51f | 303 | |
a3f97cbb JW |
304 | #ifndef ASM_OUTPUT_SECTION |
305 | #define ASM_OUTPUT_SECTION(FILE, SECTION) \ | |
306 | fprintf ((FILE), SECTION_FORMAT, SECTION_ASM_OP, SECTION) | |
307 | #endif | |
308 | ||
0021b564 JM |
309 | #ifndef ASM_OUTPUT_DWARF_DATA1 |
310 | #define ASM_OUTPUT_DWARF_DATA1(FILE,VALUE) \ | |
e8638df0 | 311 | fprintf ((FILE), "%s0x%x", ASM_BYTE_OP, (unsigned) (VALUE)) |
0021b564 JM |
312 | #endif |
313 | ||
bb727b5a JM |
314 | #ifndef ASM_OUTPUT_DWARF_DELTA1 |
315 | #define ASM_OUTPUT_DWARF_DELTA1(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 316 | do { fprintf ((FILE), "%s", ASM_BYTE_OP); \ |
bb727b5a JM |
317 | assemble_name (FILE, LABEL1); \ |
318 | fprintf (FILE, "-"); \ | |
319 | assemble_name (FILE, LABEL2); \ | |
320 | } while (0) | |
321 | #endif | |
322 | ||
0021b564 JM |
323 | #ifdef UNALIGNED_INT_ASM_OP |
324 | ||
325 | #ifndef UNALIGNED_OFFSET_ASM_OP | |
326 | #define UNALIGNED_OFFSET_ASM_OP \ | |
327 | (DWARF_OFFSET_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
328 | #endif | |
329 | ||
330 | #ifndef UNALIGNED_WORD_ASM_OP | |
a1a4189d JB |
331 | #define UNALIGNED_WORD_ASM_OP \ |
332 | ((DWARF2_ADDR_SIZE) == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP \ | |
333 | : (DWARF2_ADDR_SIZE) == 2 ? UNALIGNED_SHORT_ASM_OP \ | |
334 | : UNALIGNED_INT_ASM_OP) | |
0021b564 JM |
335 | #endif |
336 | ||
a3f97cbb JW |
337 | #ifndef ASM_OUTPUT_DWARF_DELTA2 |
338 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 339 | do { fprintf ((FILE), "%s", UNALIGNED_SHORT_ASM_OP); \ |
a3f97cbb JW |
340 | assemble_name (FILE, LABEL1); \ |
341 | fprintf (FILE, "-"); \ | |
342 | assemble_name (FILE, LABEL2); \ | |
343 | } while (0) | |
344 | #endif | |
345 | ||
346 | #ifndef ASM_OUTPUT_DWARF_DELTA4 | |
347 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 348 | do { fprintf ((FILE), "%s", UNALIGNED_INT_ASM_OP); \ |
a3f97cbb JW |
349 | assemble_name (FILE, LABEL1); \ |
350 | fprintf (FILE, "-"); \ | |
351 | assemble_name (FILE, LABEL2); \ | |
352 | } while (0) | |
353 | #endif | |
354 | ||
7e23cb16 JM |
355 | #ifndef ASM_OUTPUT_DWARF_DELTA |
356 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 357 | do { fprintf ((FILE), "%s", UNALIGNED_OFFSET_ASM_OP); \ |
7e23cb16 JM |
358 | assemble_name (FILE, LABEL1); \ |
359 | fprintf (FILE, "-"); \ | |
360 | assemble_name (FILE, LABEL2); \ | |
361 | } while (0) | |
362 | #endif | |
363 | ||
364 | #ifndef ASM_OUTPUT_DWARF_ADDR_DELTA | |
365 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
e8638df0 | 366 | do { fprintf ((FILE), "%s", UNALIGNED_WORD_ASM_OP); \ |
7e23cb16 JM |
367 | assemble_name (FILE, LABEL1); \ |
368 | fprintf (FILE, "-"); \ | |
369 | assemble_name (FILE, LABEL2); \ | |
370 | } while (0) | |
371 | #endif | |
372 | ||
a3f97cbb JW |
373 | #ifndef ASM_OUTPUT_DWARF_ADDR |
374 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
e8638df0 | 375 | do { fprintf ((FILE), "%s", UNALIGNED_WORD_ASM_OP); \ |
a3f97cbb JW |
376 | assemble_name (FILE, LABEL); \ |
377 | } while (0) | |
378 | #endif | |
379 | ||
380 | #ifndef ASM_OUTPUT_DWARF_ADDR_CONST | |
1865dbb5 JM |
381 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,RTX) \ |
382 | do { \ | |
e8638df0 | 383 | fprintf ((FILE), "%s", UNALIGNED_WORD_ASM_OP); \ |
1865dbb5 | 384 | output_addr_const ((FILE), (RTX)); \ |
1865dbb5 | 385 | } while (0) |
7e23cb16 JM |
386 | #endif |
387 | ||
7bb9fb0e JM |
388 | #ifndef ASM_OUTPUT_DWARF_OFFSET4 |
389 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ | |
e8638df0 | 390 | do { fprintf ((FILE), "%s", UNALIGNED_INT_ASM_OP); \ |
7bb9fb0e JM |
391 | assemble_name (FILE, LABEL); \ |
392 | } while (0) | |
393 | #endif | |
394 | ||
7e23cb16 JM |
395 | #ifndef ASM_OUTPUT_DWARF_OFFSET |
396 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ | |
e8638df0 | 397 | do { fprintf ((FILE), "%s", UNALIGNED_OFFSET_ASM_OP); \ |
7e23cb16 JM |
398 | assemble_name (FILE, LABEL); \ |
399 | } while (0) | |
a3f97cbb JW |
400 | #endif |
401 | ||
a3f97cbb JW |
402 | #ifndef ASM_OUTPUT_DWARF_DATA2 |
403 | #define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \ | |
e8638df0 | 404 | fprintf ((FILE), "%s0x%x", UNALIGNED_SHORT_ASM_OP, (unsigned) (VALUE)) |
a3f97cbb JW |
405 | #endif |
406 | ||
407 | #ifndef ASM_OUTPUT_DWARF_DATA4 | |
408 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
e8638df0 | 409 | fprintf ((FILE), "%s0x%x", UNALIGNED_INT_ASM_OP, (unsigned) (VALUE)) |
a3f97cbb JW |
410 | #endif |
411 | ||
21217bd0 JW |
412 | #ifndef ASM_OUTPUT_DWARF_DATA8 |
413 | #define ASM_OUTPUT_DWARF_DATA8(FILE,VALUE) \ | |
e8638df0 | 414 | fprintf ((FILE), "%s0x%lx", UNALIGNED_DOUBLE_INT_ASM_OP, \ |
21217bd0 JW |
415 | (unsigned long) (VALUE)) |
416 | #endif | |
417 | ||
7e23cb16 JM |
418 | #ifndef ASM_OUTPUT_DWARF_DATA |
419 | #define ASM_OUTPUT_DWARF_DATA(FILE,VALUE) \ | |
e8638df0 | 420 | fprintf ((FILE), "%s0x%lx", UNALIGNED_OFFSET_ASM_OP, \ |
32bd96ff | 421 | (unsigned long) (VALUE)) |
7e23cb16 JM |
422 | #endif |
423 | ||
424 | #ifndef ASM_OUTPUT_DWARF_ADDR_DATA | |
425 | #define ASM_OUTPUT_DWARF_ADDR_DATA(FILE,VALUE) \ | |
e8638df0 | 426 | fprintf ((FILE), "%s0x%lx", UNALIGNED_WORD_ASM_OP, \ |
32bd96ff | 427 | (unsigned long) (VALUE)) |
7e23cb16 JM |
428 | #endif |
429 | ||
21217bd0 JW |
430 | #ifndef ASM_OUTPUT_DWARF_CONST_DOUBLE |
431 | #define ASM_OUTPUT_DWARF_CONST_DOUBLE(FILE,HIGH_VALUE,LOW_VALUE) \ | |
a3f97cbb JW |
432 | do { \ |
433 | if (WORDS_BIG_ENDIAN) \ | |
434 | { \ | |
e8638df0 HPN |
435 | fprintf ((FILE), "%s0x%lx\n", UNALIGNED_INT_ASM_OP, (HIGH_VALUE));\ |
436 | fprintf ((FILE), "%s0x%lx", UNALIGNED_INT_ASM_OP, (LOW_VALUE));\ | |
a3f97cbb JW |
437 | } \ |
438 | else \ | |
439 | { \ | |
e8638df0 HPN |
440 | fprintf ((FILE), "%s0x%lx\n", UNALIGNED_INT_ASM_OP, (LOW_VALUE)); \ |
441 | fprintf ((FILE), "%s0x%lx", UNALIGNED_INT_ASM_OP, (HIGH_VALUE)); \ | |
a3f97cbb JW |
442 | } \ |
443 | } while (0) | |
444 | #endif | |
445 | ||
0021b564 JM |
446 | #else /* UNALIGNED_INT_ASM_OP */ |
447 | ||
448 | /* We don't have unaligned support, let's hope the normal output works for | |
e09bbb25 JM |
449 | .debug_frame. But we know it won't work for .debug_info. */ |
450 | ||
451 | #ifdef DWARF2_DEBUGGING_INFO | |
63bc1d05 | 452 | #error DWARF2_DEBUGGING_INFO requires UNALIGNED_INT_ASM_OP. |
e09bbb25 | 453 | #endif |
0021b564 | 454 | |
0517872a | 455 | #ifndef ASM_OUTPUT_DWARF_ADDR |
0021b564 | 456 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ |
a1a4189d | 457 | assemble_integer (gen_rtx_SYMBOL_REF (Pmode, LABEL), DWARF2_ADDR_SIZE, 1) |
0517872a JM |
458 | #endif |
459 | ||
460 | #ifndef ASM_OUTPUT_DWARF_ADDR_CONST | |
461 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,RTX) ASM_OUTPUT_DWARF_ADDR (FILE,RTX) | |
462 | #endif | |
0021b564 | 463 | |
0517872a | 464 | #ifndef ASM_OUTPUT_DWARF_OFFSET4 |
7bb9fb0e | 465 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ |
38a448ca | 466 | assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1) |
0517872a | 467 | #endif |
7bb9fb0e | 468 | |
0517872a | 469 | #ifndef ASM_OUTPUT_DWARF_OFFSET |
0021b564 | 470 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ |
38a448ca | 471 | assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1) |
0517872a | 472 | #endif |
0021b564 | 473 | |
0517872a | 474 | #ifndef ASM_OUTPUT_DWARF_DELTA2 |
0021b564 | 475 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ |
38a448ca | 476 | assemble_integer (gen_rtx_MINUS (HImode, \ |
c5c76735 JL |
477 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ |
478 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 | 479 | 2, 1) |
0517872a | 480 | #endif |
556273e0 | 481 | |
0517872a | 482 | #ifndef ASM_OUTPUT_DWARF_DELTA4 |
0021b564 | 483 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ |
38a448ca | 484 | assemble_integer (gen_rtx_MINUS (SImode, \ |
c5c76735 JL |
485 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ |
486 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 | 487 | 4, 1) |
0517872a | 488 | #endif |
0021b564 | 489 | |
0517872a | 490 | #ifndef ASM_OUTPUT_DWARF_ADDR_DELTA |
0021b564 | 491 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ |
38a448ca | 492 | assemble_integer (gen_rtx_MINUS (Pmode, \ |
c5c76735 JL |
493 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ |
494 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
a1a4189d | 495 | DWARF2_ADDR_SIZE, 1) |
0517872a | 496 | #endif |
0021b564 | 497 | |
0517872a | 498 | #ifndef ASM_OUTPUT_DWARF_DELTA |
0021b564 JM |
499 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ |
500 | ASM_OUTPUT_DWARF_DELTA4 (FILE,LABEL1,LABEL2) | |
0517872a | 501 | #endif |
0021b564 | 502 | |
0517872a | 503 | #ifndef ASM_OUTPUT_DWARF_DATA2 |
e0e07bd1 JM |
504 | #define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \ |
505 | assemble_integer (GEN_INT (VALUE), 2, 1) | |
0517872a | 506 | #endif |
e0e07bd1 | 507 | |
0517872a | 508 | #ifndef ASM_OUTPUT_DWARF_DATA4 |
0021b564 JM |
509 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ |
510 | assemble_integer (GEN_INT (VALUE), 4, 1) | |
0517872a | 511 | #endif |
0021b564 JM |
512 | |
513 | #endif /* UNALIGNED_INT_ASM_OP */ | |
514 | ||
2ed2af28 PDM |
515 | #ifdef SET_ASM_OP |
516 | #ifndef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL | |
7bb9fb0e JM |
517 | #define ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL(FILE, SY, HI, LO) \ |
518 | do { \ | |
e8638df0 | 519 | fprintf (FILE, "%s", SET_ASM_OP); \ |
7bb9fb0e JM |
520 | assemble_name (FILE, SY); \ |
521 | fputc (',', FILE); \ | |
522 | assemble_name (FILE, HI); \ | |
523 | fputc ('-', FILE); \ | |
524 | assemble_name (FILE, LO); \ | |
525 | } while (0) | |
2ed2af28 PDM |
526 | #endif |
527 | #endif /* SET_ASM_OP */ | |
528 | ||
a6ab3aad | 529 | /* This is similar to the default ASM_OUTPUT_ASCII, except that no trailing |
2ed2af28 | 530 | newline is produced. When flag_debug_asm is asserted, we add commentary |
a6ab3aad JM |
531 | at the end of the line, so we must avoid output of a newline here. */ |
532 | #ifndef ASM_OUTPUT_DWARF_STRING | |
533 | #define ASM_OUTPUT_DWARF_STRING(FILE,P) \ | |
534 | do { \ | |
535 | register int slen = strlen(P); \ | |
d560ee52 | 536 | register const char *p = (P); \ |
a6ab3aad JM |
537 | register int i; \ |
538 | fprintf (FILE, "\t.ascii \""); \ | |
539 | for (i = 0; i < slen; i++) \ | |
540 | { \ | |
541 | register int c = p[i]; \ | |
542 | if (c == '\"' || c == '\\') \ | |
543 | putc ('\\', FILE); \ | |
f3ad1f9c | 544 | if (ISPRINT(c)) \ |
a6ab3aad JM |
545 | putc (c, FILE); \ |
546 | else \ | |
547 | { \ | |
548 | fprintf (FILE, "\\%o", c); \ | |
549 | } \ | |
550 | } \ | |
551 | fprintf (FILE, "\\0\""); \ | |
552 | } \ | |
553 | while (0) | |
554 | #endif | |
555 | ||
c8cc5c4a | 556 | /* The DWARF 2 CFA column which tracks the return address. Normally this |
a94dbf2c JM |
557 | is the column for PC, or the first column after all of the hard |
558 | registers. */ | |
c8cc5c4a | 559 | #ifndef DWARF_FRAME_RETURN_COLUMN |
a94dbf2c JM |
560 | #ifdef PC_REGNUM |
561 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) | |
562 | #else | |
3073d01c | 563 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS |
a94dbf2c | 564 | #endif |
c8cc5c4a JM |
565 | #endif |
566 | ||
567 | /* The mapping from gcc register number to DWARF 2 CFA column number. By | |
469ac993 | 568 | default, we just provide columns for all registers. */ |
c8cc5c4a | 569 | #ifndef DWARF_FRAME_REGNUM |
469ac993 | 570 | #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) |
c8cc5c4a | 571 | #endif |
3f76745e | 572 | |
0021b564 JM |
573 | /* Hook used by __throw. */ |
574 | ||
575 | rtx | |
576 | expand_builtin_dwarf_fp_regnum () | |
577 | { | |
578 | return GEN_INT (DWARF_FRAME_REGNUM (HARD_FRAME_POINTER_REGNUM)); | |
579 | } | |
580 | ||
a6ab3aad JM |
581 | /* The offset from the incoming value of %sp to the top of the stack frame |
582 | for the current function. */ | |
583 | #ifndef INCOMING_FRAME_SP_OFFSET | |
584 | #define INCOMING_FRAME_SP_OFFSET 0 | |
585 | #endif | |
586 | ||
71dfc51f | 587 | /* Return a pointer to a copy of the section string name S with all |
bf20f341 | 588 | attributes stripped off, and an asterisk prepended (for assemble_name). */ |
71dfc51f RK |
589 | |
590 | static inline char * | |
a3f97cbb | 591 | stripattributes (s) |
d560ee52 | 592 | const char *s; |
a3f97cbb | 593 | { |
bf20f341 | 594 | char *stripped = xmalloc (strlen (s) + 2); |
71dfc51f RK |
595 | char *p = stripped; |
596 | ||
bf20f341 JW |
597 | *p++ = '*'; |
598 | ||
599 | while (*s && *s != ',') | |
600 | *p++ = *s++; | |
71dfc51f | 601 | |
a3f97cbb JW |
602 | *p = '\0'; |
603 | return stripped; | |
604 | } | |
605 | ||
d9d5c9de | 606 | /* Generate code to initialize the register size table. */ |
2f3ca9e7 | 607 | |
d9d5c9de BS |
608 | void |
609 | expand_builtin_init_dwarf_reg_sizes (address) | |
610 | tree address; | |
2f3ca9e7 | 611 | { |
d9d5c9de BS |
612 | int i; |
613 | enum machine_mode mode = TYPE_MODE (char_type_node); | |
614 | rtx addr = expand_expr (address, NULL_RTX, VOIDmode, 0); | |
615 | rtx mem = gen_rtx_MEM (mode, addr); | |
2f3ca9e7 | 616 | |
376e12ab | 617 | for (i = 0; i < DWARF_FRAME_REGISTERS; ++i) |
2f3ca9e7 | 618 | { |
e0e07bd1 | 619 | int offset = DWARF_FRAME_REGNUM (i) * GET_MODE_SIZE (mode); |
d9d5c9de | 620 | int size = GET_MODE_SIZE (reg_raw_mode[i]); |
2f3ca9e7 | 621 | |
c699cee9 JM |
622 | if (offset < 0) |
623 | continue; | |
624 | ||
d9d5c9de BS |
625 | emit_move_insn (change_address (mem, mode, |
626 | plus_constant (addr, offset)), | |
627 | GEN_INT (size)); | |
2f3ca9e7 | 628 | } |
2f3ca9e7 JM |
629 | } |
630 | ||
3f76745e | 631 | /* Convert a DWARF call frame info. operation to its string name */ |
a3f97cbb | 632 | |
d560ee52 | 633 | static const char * |
3f76745e JM |
634 | dwarf_cfi_name (cfi_opc) |
635 | register unsigned cfi_opc; | |
636 | { | |
637 | switch (cfi_opc) | |
638 | { | |
639 | case DW_CFA_advance_loc: | |
640 | return "DW_CFA_advance_loc"; | |
641 | case DW_CFA_offset: | |
642 | return "DW_CFA_offset"; | |
643 | case DW_CFA_restore: | |
644 | return "DW_CFA_restore"; | |
645 | case DW_CFA_nop: | |
646 | return "DW_CFA_nop"; | |
647 | case DW_CFA_set_loc: | |
648 | return "DW_CFA_set_loc"; | |
649 | case DW_CFA_advance_loc1: | |
650 | return "DW_CFA_advance_loc1"; | |
651 | case DW_CFA_advance_loc2: | |
652 | return "DW_CFA_advance_loc2"; | |
653 | case DW_CFA_advance_loc4: | |
654 | return "DW_CFA_advance_loc4"; | |
655 | case DW_CFA_offset_extended: | |
656 | return "DW_CFA_offset_extended"; | |
657 | case DW_CFA_restore_extended: | |
658 | return "DW_CFA_restore_extended"; | |
659 | case DW_CFA_undefined: | |
660 | return "DW_CFA_undefined"; | |
661 | case DW_CFA_same_value: | |
662 | return "DW_CFA_same_value"; | |
663 | case DW_CFA_register: | |
664 | return "DW_CFA_register"; | |
665 | case DW_CFA_remember_state: | |
666 | return "DW_CFA_remember_state"; | |
667 | case DW_CFA_restore_state: | |
668 | return "DW_CFA_restore_state"; | |
669 | case DW_CFA_def_cfa: | |
670 | return "DW_CFA_def_cfa"; | |
671 | case DW_CFA_def_cfa_register: | |
672 | return "DW_CFA_def_cfa_register"; | |
673 | case DW_CFA_def_cfa_offset: | |
674 | return "DW_CFA_def_cfa_offset"; | |
7d9d8943 AM |
675 | case DW_CFA_def_cfa_expression: |
676 | return "DW_CFA_def_cfa_expression"; | |
c53aa195 | 677 | |
3f76745e JM |
678 | /* SGI/MIPS specific */ |
679 | case DW_CFA_MIPS_advance_loc8: | |
680 | return "DW_CFA_MIPS_advance_loc8"; | |
c53aa195 JM |
681 | |
682 | /* GNU extensions */ | |
683 | case DW_CFA_GNU_window_save: | |
684 | return "DW_CFA_GNU_window_save"; | |
0021b564 JM |
685 | case DW_CFA_GNU_args_size: |
686 | return "DW_CFA_GNU_args_size"; | |
3f388b42 GK |
687 | case DW_CFA_GNU_negative_offset_extended: |
688 | return "DW_CFA_GNU_negative_offset_extended"; | |
c53aa195 | 689 | |
3f76745e JM |
690 | default: |
691 | return "DW_CFA_<unknown>"; | |
692 | } | |
693 | } | |
a3f97cbb | 694 | |
3f76745e | 695 | /* Return a pointer to a newly allocated Call Frame Instruction. */ |
71dfc51f | 696 | |
3f76745e JM |
697 | static inline dw_cfi_ref |
698 | new_cfi () | |
699 | { | |
700 | register dw_cfi_ref cfi = (dw_cfi_ref) xmalloc (sizeof (dw_cfi_node)); | |
71dfc51f | 701 | |
3f76745e JM |
702 | cfi->dw_cfi_next = NULL; |
703 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = 0; | |
704 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = 0; | |
a3f97cbb | 705 | |
3f76745e JM |
706 | return cfi; |
707 | } | |
a3f97cbb | 708 | |
3f76745e | 709 | /* Add a Call Frame Instruction to list of instructions. */ |
a3f97cbb | 710 | |
3f76745e JM |
711 | static inline void |
712 | add_cfi (list_head, cfi) | |
713 | register dw_cfi_ref *list_head; | |
714 | register dw_cfi_ref cfi; | |
715 | { | |
716 | register dw_cfi_ref *p; | |
a3f97cbb | 717 | |
3f76745e JM |
718 | /* Find the end of the chain. */ |
719 | for (p = list_head; (*p) != NULL; p = &(*p)->dw_cfi_next) | |
720 | ; | |
721 | ||
722 | *p = cfi; | |
a3f97cbb JW |
723 | } |
724 | ||
3f76745e | 725 | /* Generate a new label for the CFI info to refer to. */ |
71dfc51f | 726 | |
c53aa195 | 727 | char * |
3f76745e | 728 | dwarf2out_cfi_label () |
a3f97cbb | 729 | { |
3f76745e JM |
730 | static char label[20]; |
731 | static unsigned long label_num = 0; | |
556273e0 | 732 | |
3f76745e JM |
733 | ASM_GENERATE_INTERNAL_LABEL (label, "LCFI", label_num++); |
734 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
735 | ||
736 | return label; | |
a3f97cbb JW |
737 | } |
738 | ||
3f76745e JM |
739 | /* Add CFI to the current fde at the PC value indicated by LABEL if specified, |
740 | or to the CIE if LABEL is NULL. */ | |
71dfc51f | 741 | |
3f76745e JM |
742 | static void |
743 | add_fde_cfi (label, cfi) | |
d3e3972c | 744 | register const char *label; |
3f76745e | 745 | register dw_cfi_ref cfi; |
a3f97cbb | 746 | { |
3f76745e JM |
747 | if (label) |
748 | { | |
749 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; | |
a3f97cbb | 750 | |
3f76745e JM |
751 | if (*label == 0) |
752 | label = dwarf2out_cfi_label (); | |
71dfc51f | 753 | |
3f76745e JM |
754 | if (fde->dw_fde_current_label == NULL |
755 | || strcmp (label, fde->dw_fde_current_label) != 0) | |
756 | { | |
757 | register dw_cfi_ref xcfi; | |
a3f97cbb | 758 | |
3f76745e | 759 | fde->dw_fde_current_label = label = xstrdup (label); |
71dfc51f | 760 | |
3f76745e JM |
761 | /* Set the location counter to the new label. */ |
762 | xcfi = new_cfi (); | |
763 | xcfi->dw_cfi_opc = DW_CFA_advance_loc4; | |
764 | xcfi->dw_cfi_oprnd1.dw_cfi_addr = label; | |
765 | add_cfi (&fde->dw_fde_cfi, xcfi); | |
766 | } | |
71dfc51f | 767 | |
3f76745e JM |
768 | add_cfi (&fde->dw_fde_cfi, cfi); |
769 | } | |
770 | ||
771 | else | |
772 | add_cfi (&cie_cfi_head, cfi); | |
a3f97cbb JW |
773 | } |
774 | ||
3f76745e | 775 | /* Subroutine of lookup_cfa. */ |
71dfc51f | 776 | |
3f76745e | 777 | static inline void |
7d9d8943 | 778 | lookup_cfa_1 (cfi, loc) |
3f76745e | 779 | register dw_cfi_ref cfi; |
7d9d8943 | 780 | register dw_cfa_location *loc; |
a3f97cbb | 781 | { |
3f76745e JM |
782 | switch (cfi->dw_cfi_opc) |
783 | { | |
784 | case DW_CFA_def_cfa_offset: | |
7d9d8943 | 785 | loc->offset = cfi->dw_cfi_oprnd1.dw_cfi_offset; |
3f76745e JM |
786 | break; |
787 | case DW_CFA_def_cfa_register: | |
7d9d8943 | 788 | loc->reg = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; |
3f76745e JM |
789 | break; |
790 | case DW_CFA_def_cfa: | |
7d9d8943 AM |
791 | loc->reg = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; |
792 | loc->offset = cfi->dw_cfi_oprnd2.dw_cfi_offset; | |
793 | break; | |
794 | case DW_CFA_def_cfa_expression: | |
795 | get_cfa_from_loc_descr (loc, cfi->dw_cfi_oprnd1.dw_cfi_loc); | |
3f76745e | 796 | break; |
e9a25f70 JL |
797 | default: |
798 | break; | |
3f76745e | 799 | } |
a3f97cbb JW |
800 | } |
801 | ||
3f76745e | 802 | /* Find the previous value for the CFA. */ |
71dfc51f | 803 | |
3f76745e | 804 | static void |
7d9d8943 AM |
805 | lookup_cfa (loc) |
806 | register dw_cfa_location *loc; | |
a3f97cbb | 807 | { |
3f76745e JM |
808 | register dw_cfi_ref cfi; |
809 | ||
7d9d8943 AM |
810 | loc->reg = (unsigned long) -1; |
811 | loc->offset = 0; | |
812 | loc->indirect = 0; | |
813 | loc->base_offset = 0; | |
3f76745e JM |
814 | |
815 | for (cfi = cie_cfi_head; cfi; cfi = cfi->dw_cfi_next) | |
7d9d8943 | 816 | lookup_cfa_1 (cfi, loc); |
3f76745e JM |
817 | |
818 | if (fde_table_in_use) | |
a3f97cbb | 819 | { |
3f76745e JM |
820 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; |
821 | for (cfi = fde->dw_fde_cfi; cfi; cfi = cfi->dw_cfi_next) | |
7d9d8943 | 822 | lookup_cfa_1 (cfi, loc); |
a3f97cbb JW |
823 | } |
824 | } | |
825 | ||
3f76745e | 826 | /* The current rule for calculating the DWARF2 canonical frame address. */ |
7d9d8943 | 827 | dw_cfa_location cfa; |
71dfc51f | 828 | |
3f76745e JM |
829 | /* The register used for saving registers to the stack, and its offset |
830 | from the CFA. */ | |
7d9d8943 | 831 | dw_cfa_location cfa_store; |
3f76745e | 832 | |
0021b564 JM |
833 | /* The running total of the size of arguments pushed onto the stack. */ |
834 | static long args_size; | |
835 | ||
b57d9225 JM |
836 | /* The last args_size we actually output. */ |
837 | static long old_args_size; | |
838 | ||
3f76745e JM |
839 | /* Entry point to update the canonical frame address (CFA). |
840 | LABEL is passed to add_fde_cfi. The value of CFA is now to be | |
841 | calculated from REG+OFFSET. */ | |
842 | ||
843 | void | |
844 | dwarf2out_def_cfa (label, reg, offset) | |
d3e3972c | 845 | register const char *label; |
7d9d8943 AM |
846 | unsigned reg; |
847 | long offset; | |
848 | { | |
849 | dw_cfa_location loc; | |
850 | loc.indirect = 0; | |
851 | loc.base_offset = 0; | |
852 | loc.reg = reg; | |
853 | loc.offset = offset; | |
854 | def_cfa_1 (label, &loc); | |
855 | } | |
856 | ||
857 | /* This routine does the actual work. The CFA is now calculated from | |
858 | the dw_cfa_location structure. */ | |
859 | static void | |
860 | def_cfa_1 (label, loc_p) | |
861 | register const char *label; | |
862 | dw_cfa_location *loc_p; | |
a3f97cbb | 863 | { |
3f76745e | 864 | register dw_cfi_ref cfi; |
7d9d8943 | 865 | dw_cfa_location old_cfa, loc; |
3f76745e | 866 | |
7d9d8943 AM |
867 | cfa = *loc_p; |
868 | loc = *loc_p; | |
5bef9b1f | 869 | |
7d9d8943 AM |
870 | if (cfa_store.reg == loc.reg && loc.indirect == 0) |
871 | cfa_store.offset = loc.offset; | |
3f76745e | 872 | |
7d9d8943 AM |
873 | loc.reg = DWARF_FRAME_REGNUM (loc.reg); |
874 | lookup_cfa (&old_cfa); | |
875 | ||
876 | if (loc.reg == old_cfa.reg && loc.offset == old_cfa.offset && | |
877 | loc.indirect == old_cfa.indirect) | |
878 | { | |
e09bbb25 JM |
879 | if (loc.indirect == 0 |
880 | || loc.base_offset == old_cfa.base_offset) | |
7d9d8943 | 881 | return; |
7d9d8943 | 882 | } |
3f76745e JM |
883 | |
884 | cfi = new_cfi (); | |
885 | ||
e09bbb25 | 886 | if (loc.reg == old_cfa.reg && !loc.indirect) |
a3f97cbb | 887 | { |
3f76745e | 888 | cfi->dw_cfi_opc = DW_CFA_def_cfa_offset; |
7d9d8943 | 889 | cfi->dw_cfi_oprnd1.dw_cfi_offset = loc.offset; |
3f76745e | 890 | } |
a3f97cbb | 891 | |
3f76745e | 892 | #ifndef MIPS_DEBUGGING_INFO /* SGI dbx thinks this means no offset. */ |
7d9d8943 | 893 | else if (loc.offset == old_cfa.offset && old_cfa.reg != (unsigned long) -1 |
e09bbb25 | 894 | && !loc.indirect) |
3f76745e JM |
895 | { |
896 | cfi->dw_cfi_opc = DW_CFA_def_cfa_register; | |
7d9d8943 | 897 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = loc.reg; |
3f76745e JM |
898 | } |
899 | #endif | |
a3f97cbb | 900 | |
7d9d8943 | 901 | else if (loc.indirect == 0) |
3f76745e JM |
902 | { |
903 | cfi->dw_cfi_opc = DW_CFA_def_cfa; | |
7d9d8943 AM |
904 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = loc.reg; |
905 | cfi->dw_cfi_oprnd2.dw_cfi_offset = loc.offset; | |
906 | } | |
907 | else | |
908 | { | |
556273e0 | 909 | struct dw_loc_descr_struct *loc_list; |
7d9d8943 AM |
910 | cfi->dw_cfi_opc = DW_CFA_def_cfa_expression; |
911 | loc_list = build_cfa_loc (&loc); | |
912 | cfi->dw_cfi_oprnd1.dw_cfi_loc = loc_list; | |
a3f97cbb | 913 | } |
3f76745e JM |
914 | |
915 | add_fde_cfi (label, cfi); | |
a3f97cbb JW |
916 | } |
917 | ||
3f76745e JM |
918 | /* Add the CFI for saving a register. REG is the CFA column number. |
919 | LABEL is passed to add_fde_cfi. | |
920 | If SREG is -1, the register is saved at OFFSET from the CFA; | |
921 | otherwise it is saved in SREG. */ | |
71dfc51f | 922 | |
3f76745e JM |
923 | static void |
924 | reg_save (label, reg, sreg, offset) | |
d3e3972c | 925 | register const char *label; |
3f76745e JM |
926 | register unsigned reg; |
927 | register unsigned sreg; | |
928 | register long offset; | |
a3f97cbb | 929 | { |
3f76745e JM |
930 | register dw_cfi_ref cfi = new_cfi (); |
931 | ||
932 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
933 | ||
85066503 MH |
934 | /* The following comparison is correct. -1 is used to indicate that |
935 | the value isn't a register number. */ | |
936 | if (sreg == (unsigned int) -1) | |
a3f97cbb | 937 | { |
3f76745e JM |
938 | if (reg & ~0x3f) |
939 | /* The register number won't fit in 6 bits, so we have to use | |
940 | the long form. */ | |
941 | cfi->dw_cfi_opc = DW_CFA_offset_extended; | |
942 | else | |
943 | cfi->dw_cfi_opc = DW_CFA_offset; | |
944 | ||
27c35f4b HPN |
945 | #ifdef ENABLE_CHECKING |
946 | { | |
947 | /* If we get an offset that is not a multiple of | |
948 | DWARF_CIE_DATA_ALIGNMENT, there is either a bug in the | |
949 | definition of DWARF_CIE_DATA_ALIGNMENT, or a bug in the machine | |
950 | description. */ | |
951 | long check_offset = offset / DWARF_CIE_DATA_ALIGNMENT; | |
952 | ||
953 | if (check_offset * DWARF_CIE_DATA_ALIGNMENT != offset) | |
954 | abort (); | |
955 | } | |
956 | #endif | |
3f76745e | 957 | offset /= DWARF_CIE_DATA_ALIGNMENT; |
3a88cbd1 | 958 | if (offset < 0) |
3f388b42 GK |
959 | { |
960 | cfi->dw_cfi_opc = DW_CFA_GNU_negative_offset_extended; | |
961 | offset = -offset; | |
962 | } | |
3f76745e JM |
963 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; |
964 | } | |
2c849145 JM |
965 | else if (sreg == reg) |
966 | /* We could emit a DW_CFA_same_value in this case, but don't bother. */ | |
967 | return; | |
3f76745e JM |
968 | else |
969 | { | |
970 | cfi->dw_cfi_opc = DW_CFA_register; | |
971 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = sreg; | |
972 | } | |
973 | ||
974 | add_fde_cfi (label, cfi); | |
975 | } | |
976 | ||
c53aa195 JM |
977 | /* Add the CFI for saving a register window. LABEL is passed to reg_save. |
978 | This CFI tells the unwinder that it needs to restore the window registers | |
979 | from the previous frame's window save area. | |
556273e0 | 980 | |
c53aa195 JM |
981 | ??? Perhaps we should note in the CIE where windows are saved (instead of |
982 | assuming 0(cfa)) and what registers are in the window. */ | |
983 | ||
984 | void | |
985 | dwarf2out_window_save (label) | |
d3e3972c | 986 | register const char *label; |
c53aa195 JM |
987 | { |
988 | register dw_cfi_ref cfi = new_cfi (); | |
989 | cfi->dw_cfi_opc = DW_CFA_GNU_window_save; | |
990 | add_fde_cfi (label, cfi); | |
991 | } | |
992 | ||
0021b564 JM |
993 | /* Add a CFI to update the running total of the size of arguments |
994 | pushed onto the stack. */ | |
995 | ||
996 | void | |
997 | dwarf2out_args_size (label, size) | |
d3e3972c | 998 | const char *label; |
0021b564 JM |
999 | long size; |
1000 | { | |
b57d9225 JM |
1001 | register dw_cfi_ref cfi; |
1002 | ||
1003 | if (size == old_args_size) | |
1004 | return; | |
1005 | old_args_size = size; | |
1006 | ||
1007 | cfi = new_cfi (); | |
0021b564 JM |
1008 | cfi->dw_cfi_opc = DW_CFA_GNU_args_size; |
1009 | cfi->dw_cfi_oprnd1.dw_cfi_offset = size; | |
1010 | add_fde_cfi (label, cfi); | |
1011 | } | |
1012 | ||
c53aa195 JM |
1013 | /* Entry point for saving a register to the stack. REG is the GCC register |
1014 | number. LABEL and OFFSET are passed to reg_save. */ | |
3f76745e JM |
1015 | |
1016 | void | |
1017 | dwarf2out_reg_save (label, reg, offset) | |
d3e3972c | 1018 | register const char *label; |
3f76745e JM |
1019 | register unsigned reg; |
1020 | register long offset; | |
1021 | { | |
1022 | reg_save (label, DWARF_FRAME_REGNUM (reg), -1, offset); | |
1023 | } | |
1024 | ||
c53aa195 JM |
1025 | /* Entry point for saving the return address in the stack. |
1026 | LABEL and OFFSET are passed to reg_save. */ | |
1027 | ||
1028 | void | |
1029 | dwarf2out_return_save (label, offset) | |
d3e3972c | 1030 | register const char *label; |
c53aa195 JM |
1031 | register long offset; |
1032 | { | |
1033 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, -1, offset); | |
1034 | } | |
1035 | ||
1036 | /* Entry point for saving the return address in a register. | |
1037 | LABEL and SREG are passed to reg_save. */ | |
1038 | ||
1039 | void | |
1040 | dwarf2out_return_reg (label, sreg) | |
d3e3972c | 1041 | register const char *label; |
c53aa195 JM |
1042 | register unsigned sreg; |
1043 | { | |
1044 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, sreg, 0); | |
1045 | } | |
1046 | ||
3f76745e JM |
1047 | /* Record the initial position of the return address. RTL is |
1048 | INCOMING_RETURN_ADDR_RTX. */ | |
1049 | ||
1050 | static void | |
1051 | initial_return_save (rtl) | |
1052 | register rtx rtl; | |
1053 | { | |
973838fd | 1054 | unsigned int reg = (unsigned int) -1; |
3f76745e JM |
1055 | long offset = 0; |
1056 | ||
1057 | switch (GET_CODE (rtl)) | |
1058 | { | |
1059 | case REG: | |
1060 | /* RA is in a register. */ | |
2c849145 | 1061 | reg = DWARF_FRAME_REGNUM (REGNO (rtl)); |
3f76745e JM |
1062 | break; |
1063 | case MEM: | |
1064 | /* RA is on the stack. */ | |
1065 | rtl = XEXP (rtl, 0); | |
1066 | switch (GET_CODE (rtl)) | |
1067 | { | |
1068 | case REG: | |
3a88cbd1 JL |
1069 | if (REGNO (rtl) != STACK_POINTER_REGNUM) |
1070 | abort (); | |
3f76745e JM |
1071 | offset = 0; |
1072 | break; | |
1073 | case PLUS: | |
3a88cbd1 JL |
1074 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
1075 | abort (); | |
3f76745e JM |
1076 | offset = INTVAL (XEXP (rtl, 1)); |
1077 | break; | |
1078 | case MINUS: | |
3a88cbd1 JL |
1079 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
1080 | abort (); | |
3f76745e JM |
1081 | offset = -INTVAL (XEXP (rtl, 1)); |
1082 | break; | |
1083 | default: | |
1084 | abort (); | |
1085 | } | |
1086 | break; | |
c53aa195 JM |
1087 | case PLUS: |
1088 | /* The return address is at some offset from any value we can | |
1089 | actually load. For instance, on the SPARC it is in %i7+8. Just | |
1090 | ignore the offset for now; it doesn't matter for unwinding frames. */ | |
3a88cbd1 JL |
1091 | if (GET_CODE (XEXP (rtl, 1)) != CONST_INT) |
1092 | abort (); | |
c53aa195 JM |
1093 | initial_return_save (XEXP (rtl, 0)); |
1094 | return; | |
a3f97cbb | 1095 | default: |
3f76745e | 1096 | abort (); |
a3f97cbb | 1097 | } |
3f76745e | 1098 | |
7d9d8943 | 1099 | reg_save (NULL, DWARF_FRAME_RETURN_COLUMN, reg, offset - cfa.offset); |
a3f97cbb JW |
1100 | } |
1101 | ||
1ba5ae8f AH |
1102 | /* Given a SET, calculate the amount of stack adjustment it |
1103 | contains. */ | |
1104 | ||
5e640c56 AH |
1105 | static long |
1106 | stack_adjust_offset (pattern) | |
1ba5ae8f AH |
1107 | rtx pattern; |
1108 | { | |
1109 | rtx src = SET_SRC (pattern); | |
1110 | rtx dest = SET_DEST (pattern); | |
1111 | long offset = 0; | |
1112 | enum rtx_code code; | |
1113 | ||
1114 | if (dest == stack_pointer_rtx) | |
1115 | { | |
1116 | /* (set (reg sp) (plus (reg sp) (const_int))) */ | |
1117 | code = GET_CODE (src); | |
1118 | if (! (code == PLUS || code == MINUS) | |
1119 | || XEXP (src, 0) != stack_pointer_rtx | |
1120 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
1121 | return 0; | |
1122 | ||
1123 | offset = INTVAL (XEXP (src, 1)); | |
1124 | } | |
1125 | else if (GET_CODE (dest) == MEM) | |
1126 | { | |
1127 | /* (set (mem (pre_dec (reg sp))) (foo)) */ | |
1128 | src = XEXP (dest, 0); | |
1129 | code = GET_CODE (src); | |
1130 | ||
1131 | if (! (code == PRE_DEC || code == PRE_INC) | |
1132 | || XEXP (src, 0) != stack_pointer_rtx) | |
1133 | return 0; | |
1134 | ||
1135 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1136 | } | |
1137 | else | |
1138 | return 0; | |
1139 | ||
1140 | if (code == PLUS || code == PRE_INC) | |
1141 | offset = -offset; | |
1142 | ||
1143 | return offset; | |
1144 | } | |
1145 | ||
0021b564 JM |
1146 | /* Check INSN to see if it looks like a push or a stack adjustment, and |
1147 | make a note of it if it does. EH uses this information to find out how | |
1148 | much extra space it needs to pop off the stack. */ | |
1149 | ||
1150 | static void | |
1151 | dwarf2out_stack_adjust (insn) | |
1152 | rtx insn; | |
1153 | { | |
0021b564 | 1154 | long offset; |
d3e3972c | 1155 | const char *label; |
0021b564 | 1156 | |
b57d9225 JM |
1157 | if (! asynchronous_exceptions && GET_CODE (insn) == CALL_INSN) |
1158 | { | |
1159 | /* Extract the size of the args from the CALL rtx itself. */ | |
1160 | ||
1161 | insn = PATTERN (insn); | |
1162 | if (GET_CODE (insn) == PARALLEL) | |
1163 | insn = XVECEXP (insn, 0, 0); | |
1164 | if (GET_CODE (insn) == SET) | |
1165 | insn = SET_SRC (insn); | |
3db35af4 MM |
1166 | if (GET_CODE (insn) != CALL) |
1167 | abort (); | |
b57d9225 JM |
1168 | dwarf2out_args_size ("", INTVAL (XEXP (insn, 1))); |
1169 | return; | |
1170 | } | |
1171 | ||
1172 | /* If only calls can throw, and we have a frame pointer, | |
1173 | save up adjustments until we see the CALL_INSN. */ | |
1174 | else if (! asynchronous_exceptions | |
7d9d8943 | 1175 | && cfa.reg != STACK_POINTER_REGNUM) |
b57d9225 JM |
1176 | return; |
1177 | ||
6020d360 | 1178 | if (GET_CODE (insn) == BARRIER) |
0021b564 | 1179 | { |
6020d360 JM |
1180 | /* When we see a BARRIER, we know to reset args_size to 0. Usually |
1181 | the compiler will have already emitted a stack adjustment, but | |
1182 | doesn't bother for calls to noreturn functions. */ | |
1183 | #ifdef STACK_GROWS_DOWNWARD | |
1184 | offset = -args_size; | |
1185 | #else | |
1186 | offset = args_size; | |
1187 | #endif | |
0021b564 | 1188 | } |
6020d360 | 1189 | else if (GET_CODE (PATTERN (insn)) == SET) |
0021b564 | 1190 | { |
1ba5ae8f AH |
1191 | offset = stack_adjust_offset (PATTERN (insn)); |
1192 | } | |
1193 | else if (GET_CODE (PATTERN (insn)) == PARALLEL | |
1194 | || GET_CODE (PATTERN (insn)) == SEQUENCE) | |
1195 | { | |
1196 | /* There may be stack adjustments inside compound insns. Search | |
1197 | for them. */ | |
1198 | int j; | |
0021b564 | 1199 | |
1ba5ae8f AH |
1200 | offset = 0; |
1201 | for (j = XVECLEN (PATTERN (insn), 0) - 1; j >= 0; j--) | |
6020d360 | 1202 | { |
1ba5ae8f AH |
1203 | rtx pattern = XVECEXP (PATTERN (insn), 0, j); |
1204 | if (GET_CODE (pattern) == SET) | |
1205 | offset += stack_adjust_offset (pattern); | |
6020d360 | 1206 | } |
0021b564 JM |
1207 | } |
1208 | else | |
1209 | return; | |
1ba5ae8f | 1210 | |
6020d360 JM |
1211 | if (offset == 0) |
1212 | return; | |
1213 | ||
7d9d8943 AM |
1214 | if (cfa.reg == STACK_POINTER_REGNUM) |
1215 | cfa.offset += offset; | |
0021b564 JM |
1216 | |
1217 | #ifndef STACK_GROWS_DOWNWARD | |
1218 | offset = -offset; | |
1219 | #endif | |
1220 | args_size += offset; | |
1221 | if (args_size < 0) | |
1222 | args_size = 0; | |
1223 | ||
1224 | label = dwarf2out_cfi_label (); | |
7d9d8943 | 1225 | def_cfa_1 (label, &cfa); |
0021b564 JM |
1226 | dwarf2out_args_size (label, args_size); |
1227 | } | |
1228 | ||
b664de3a AM |
1229 | /* A temporary register used in adjusting SP or setting up the store_reg. */ |
1230 | static unsigned cfa_temp_reg; | |
1231 | ||
1232 | /* A temporary value used in adjusting SP or setting up the store_reg. */ | |
1233 | static long cfa_temp_value; | |
1234 | ||
1235 | /* Record call frame debugging information for an expression, which either | |
1236 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
556273e0 | 1237 | register to the stack. */ |
b664de3a AM |
1238 | |
1239 | static void | |
1240 | dwarf2out_frame_debug_expr (expr, label) | |
1241 | rtx expr; | |
d3e3972c | 1242 | const char *label; |
b664de3a AM |
1243 | { |
1244 | rtx src, dest; | |
1245 | long offset; | |
556273e0 KH |
1246 | |
1247 | /* If RTX_FRAME_RELATED_P is set on a PARALLEL, process each member of | |
1248 | the PARALLEL independently. The first element is always processed if | |
1249 | it is a SET. This is for backward compatability. Other elements | |
1250 | are processed only if they are SETs and the RTX_FRAME_RELATED_P | |
1251 | flag is set in them. */ | |
b664de3a | 1252 | |
79d13342 NC |
1253 | if (GET_CODE (expr) == PARALLEL |
1254 | || GET_CODE (expr) == SEQUENCE) | |
556273e0 | 1255 | { |
b664de3a AM |
1256 | int par_index; |
1257 | int limit = XVECLEN (expr, 0); | |
1258 | ||
1259 | for (par_index = 0; par_index < limit; par_index++) | |
556273e0 KH |
1260 | { |
1261 | rtx x = XVECEXP (expr, 0, par_index); | |
1262 | ||
1263 | if (GET_CODE (x) == SET && | |
b664de3a | 1264 | (RTX_FRAME_RELATED_P (x) || par_index == 0)) |
2618f955 | 1265 | dwarf2out_frame_debug_expr (x, label); |
556273e0 | 1266 | } |
b664de3a AM |
1267 | return; |
1268 | } | |
556273e0 | 1269 | |
b664de3a AM |
1270 | if (GET_CODE (expr) != SET) |
1271 | abort (); | |
1272 | ||
1273 | src = SET_SRC (expr); | |
1274 | dest = SET_DEST (expr); | |
1275 | ||
1276 | switch (GET_CODE (dest)) | |
1277 | { | |
1278 | case REG: | |
1279 | /* Update the CFA rule wrt SP or FP. Make sure src is | |
1280 | relative to the current CFA register. */ | |
1281 | switch (GET_CODE (src)) | |
556273e0 KH |
1282 | { |
1283 | /* Setting FP from SP. */ | |
1284 | case REG: | |
1285 | if (cfa.reg == (unsigned) REGNO (src)) | |
1286 | /* OK. */ | |
1287 | ; | |
626d1efd | 1288 | else |
556273e0 | 1289 | abort (); |
2c849145 JM |
1290 | |
1291 | /* We used to require that dest be either SP or FP, but the | |
1292 | ARM copies SP to a temporary register, and from there to | |
1293 | FP. So we just rely on the backends to only set | |
1294 | RTX_FRAME_RELATED_P on appropriate insns. */ | |
556273e0 KH |
1295 | cfa.reg = REGNO (dest); |
1296 | break; | |
b664de3a | 1297 | |
556273e0 KH |
1298 | case PLUS: |
1299 | case MINUS: | |
1300 | if (dest == stack_pointer_rtx) | |
1301 | { | |
2618f955 MM |
1302 | /* Adjusting SP. */ |
1303 | switch (GET_CODE (XEXP (src, 1))) | |
1304 | { | |
1305 | case CONST_INT: | |
1306 | offset = INTVAL (XEXP (src, 1)); | |
1307 | break; | |
1308 | case REG: | |
1309 | if ((unsigned) REGNO (XEXP (src, 1)) != cfa_temp_reg) | |
1310 | abort (); | |
1311 | offset = cfa_temp_value; | |
1312 | break; | |
1313 | default: | |
1314 | abort (); | |
1315 | } | |
1316 | ||
1317 | if (XEXP (src, 0) == hard_frame_pointer_rtx) | |
1318 | { | |
1319 | /* Restoring SP from FP in the epilogue. */ | |
7d9d8943 | 1320 | if (cfa.reg != (unsigned) HARD_FRAME_POINTER_REGNUM) |
2618f955 | 1321 | abort (); |
7d9d8943 | 1322 | cfa.reg = STACK_POINTER_REGNUM; |
2618f955 MM |
1323 | } |
1324 | else if (XEXP (src, 0) != stack_pointer_rtx) | |
1325 | abort (); | |
1326 | ||
1327 | if (GET_CODE (src) == PLUS) | |
1328 | offset = -offset; | |
7d9d8943 AM |
1329 | if (cfa.reg == STACK_POINTER_REGNUM) |
1330 | cfa.offset += offset; | |
1331 | if (cfa_store.reg == STACK_POINTER_REGNUM) | |
1332 | cfa_store.offset += offset; | |
556273e0 KH |
1333 | } |
1334 | else if (dest == hard_frame_pointer_rtx) | |
1335 | { | |
2618f955 MM |
1336 | /* Either setting the FP from an offset of the SP, |
1337 | or adjusting the FP */ | |
2c849145 | 1338 | if (! frame_pointer_needed) |
2618f955 MM |
1339 | abort (); |
1340 | ||
2c849145 | 1341 | if (GET_CODE (XEXP (src, 0)) == REG |
7d9d8943 | 1342 | && (unsigned) REGNO (XEXP (src, 0)) == cfa.reg |
2618f955 MM |
1343 | && GET_CODE (XEXP (src, 1)) == CONST_INT) |
1344 | { | |
2618f955 MM |
1345 | offset = INTVAL (XEXP (src, 1)); |
1346 | if (GET_CODE (src) == PLUS) | |
1347 | offset = -offset; | |
7d9d8943 AM |
1348 | cfa.offset += offset; |
1349 | cfa.reg = HARD_FRAME_POINTER_REGNUM; | |
2618f955 | 1350 | } |
556273e0 KH |
1351 | else |
1352 | abort (); | |
1353 | } | |
1354 | else | |
1355 | { | |
2618f955 MM |
1356 | if (GET_CODE (src) != PLUS |
1357 | || XEXP (src, 1) != stack_pointer_rtx) | |
1358 | abort (); | |
1359 | if (GET_CODE (XEXP (src, 0)) != REG | |
1360 | || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp_reg) | |
1361 | abort (); | |
7d9d8943 | 1362 | if (cfa.reg != STACK_POINTER_REGNUM) |
2618f955 | 1363 | abort (); |
7d9d8943 AM |
1364 | cfa_store.reg = REGNO (dest); |
1365 | cfa_store.offset = cfa.offset - cfa_temp_value; | |
556273e0 KH |
1366 | } |
1367 | break; | |
b664de3a | 1368 | |
556273e0 KH |
1369 | case CONST_INT: |
1370 | cfa_temp_reg = REGNO (dest); | |
1371 | cfa_temp_value = INTVAL (src); | |
1372 | break; | |
b664de3a | 1373 | |
556273e0 KH |
1374 | case IOR: |
1375 | if (GET_CODE (XEXP (src, 0)) != REG | |
2618f955 MM |
1376 | || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp_reg |
1377 | || (unsigned) REGNO (dest) != cfa_temp_reg | |
1378 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
556273e0 KH |
1379 | abort (); |
1380 | cfa_temp_value |= INTVAL (XEXP (src, 1)); | |
1381 | break; | |
b664de3a | 1382 | |
556273e0 KH |
1383 | default: |
1384 | abort (); | |
1385 | } | |
7d9d8943 | 1386 | def_cfa_1 (label, &cfa); |
2618f955 | 1387 | break; |
b664de3a | 1388 | |
ab577d8a MM |
1389 | /* Skip over HIGH, assuming it will be followed by a LO_SUM, which |
1390 | will fill in all of the bits. */ | |
1391 | case HIGH: | |
1392 | break; | |
1393 | ||
1394 | case LO_SUM: | |
1395 | cfa_temp_reg = REGNO (dest); | |
1396 | cfa_temp_value = INTVAL (XEXP (src, 1)); | |
1397 | break; | |
1398 | ||
2618f955 | 1399 | case MEM: |
2618f955 MM |
1400 | if (GET_CODE (src) != REG) |
1401 | abort (); | |
7d9d8943 | 1402 | |
7d9d8943 AM |
1403 | /* Saving a register to the stack. Make sure dest is relative to the |
1404 | CFA register. */ | |
2618f955 MM |
1405 | switch (GET_CODE (XEXP (dest, 0))) |
1406 | { | |
1407 | /* With a push. */ | |
1408 | case PRE_INC: | |
1409 | case PRE_DEC: | |
1410 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1411 | if (GET_CODE (XEXP (dest, 0)) == PRE_INC) | |
1412 | offset = -offset; | |
b664de3a | 1413 | |
2618f955 | 1414 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM |
7d9d8943 | 1415 | || cfa_store.reg != STACK_POINTER_REGNUM) |
2618f955 | 1416 | abort (); |
7d9d8943 AM |
1417 | cfa_store.offset += offset; |
1418 | if (cfa.reg == STACK_POINTER_REGNUM) | |
1419 | cfa.offset = cfa_store.offset; | |
b664de3a | 1420 | |
7d9d8943 | 1421 | offset = -cfa_store.offset; |
2618f955 | 1422 | break; |
b664de3a | 1423 | |
2618f955 MM |
1424 | /* With an offset. */ |
1425 | case PLUS: | |
1426 | case MINUS: | |
1427 | offset = INTVAL (XEXP (XEXP (dest, 0), 1)); | |
1428 | if (GET_CODE (XEXP (dest, 0)) == MINUS) | |
1429 | offset = -offset; | |
b664de3a | 1430 | |
7d9d8943 | 1431 | if (cfa_store.reg != (unsigned) REGNO (XEXP (XEXP (dest, 0), 0))) |
2618f955 | 1432 | abort (); |
7d9d8943 | 1433 | offset -= cfa_store.offset; |
2618f955 MM |
1434 | break; |
1435 | ||
1436 | /* Without an offset. */ | |
1437 | case REG: | |
7d9d8943 | 1438 | if (cfa_store.reg != (unsigned) REGNO (XEXP (dest, 0))) |
556273e0 | 1439 | abort (); |
7d9d8943 | 1440 | offset = -cfa_store.offset; |
2618f955 MM |
1441 | break; |
1442 | ||
1443 | default: | |
1444 | abort (); | |
1445 | } | |
e09bbb25 | 1446 | |
556273e0 | 1447 | if (REGNO (src) != STACK_POINTER_REGNUM |
e09bbb25 JM |
1448 | && REGNO (src) != HARD_FRAME_POINTER_REGNUM |
1449 | && (unsigned) REGNO (src) == cfa.reg) | |
1450 | { | |
1451 | /* We're storing the current CFA reg into the stack. */ | |
1452 | ||
1453 | if (cfa.offset == 0) | |
1454 | { | |
1455 | /* If the source register is exactly the CFA, assume | |
1456 | we're saving SP like any other register; this happens | |
1457 | on the ARM. */ | |
1458 | ||
1459 | def_cfa_1 (label, &cfa); | |
1460 | dwarf2out_reg_save (label, STACK_POINTER_REGNUM, offset); | |
1461 | break; | |
1462 | } | |
1463 | else | |
1464 | { | |
1465 | /* Otherwise, we'll need to look in the stack to | |
1466 | calculate the CFA. */ | |
1467 | ||
1468 | rtx x = XEXP (dest, 0); | |
1469 | if (GET_CODE (x) != REG) | |
1470 | x = XEXP (x, 0); | |
1471 | if (GET_CODE (x) != REG) | |
1472 | abort (); | |
1473 | cfa.reg = (unsigned) REGNO (x); | |
1474 | cfa.base_offset = offset; | |
1475 | cfa.indirect = 1; | |
1476 | def_cfa_1 (label, &cfa); | |
1477 | break; | |
1478 | } | |
1479 | } | |
1480 | ||
7d9d8943 | 1481 | def_cfa_1 (label, &cfa); |
2618f955 MM |
1482 | dwarf2out_reg_save (label, REGNO (src), offset); |
1483 | break; | |
1484 | ||
1485 | default: | |
1486 | abort (); | |
1487 | } | |
b664de3a AM |
1488 | } |
1489 | ||
3f76745e JM |
1490 | /* Record call frame debugging information for INSN, which either |
1491 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
1492 | register to the stack. If INSN is NULL_RTX, initialize our state. */ | |
71dfc51f | 1493 | |
3f76745e JM |
1494 | void |
1495 | dwarf2out_frame_debug (insn) | |
1496 | rtx insn; | |
a3f97cbb | 1497 | { |
d3e3972c | 1498 | const char *label; |
b664de3a | 1499 | rtx src; |
3f76745e JM |
1500 | |
1501 | if (insn == NULL_RTX) | |
a3f97cbb | 1502 | { |
3f76745e | 1503 | /* Set up state for generating call frame debug info. */ |
7d9d8943 AM |
1504 | lookup_cfa (&cfa); |
1505 | if (cfa.reg != (unsigned long) DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM)) | |
3a88cbd1 | 1506 | abort (); |
7d9d8943 AM |
1507 | cfa.reg = STACK_POINTER_REGNUM; |
1508 | cfa_store = cfa; | |
3f76745e JM |
1509 | cfa_temp_reg = -1; |
1510 | cfa_temp_value = 0; | |
1511 | return; | |
1512 | } | |
1513 | ||
0021b564 JM |
1514 | if (! RTX_FRAME_RELATED_P (insn)) |
1515 | { | |
6020d360 | 1516 | dwarf2out_stack_adjust (insn); |
0021b564 JM |
1517 | return; |
1518 | } | |
1519 | ||
3f76745e | 1520 | label = dwarf2out_cfi_label (); |
556273e0 | 1521 | |
07ebc930 RH |
1522 | src = find_reg_note (insn, REG_FRAME_RELATED_EXPR, NULL_RTX); |
1523 | if (src) | |
1524 | insn = XEXP (src, 0); | |
556273e0 | 1525 | else |
07ebc930 RH |
1526 | insn = PATTERN (insn); |
1527 | ||
b664de3a | 1528 | dwarf2out_frame_debug_expr (insn, label); |
3f76745e JM |
1529 | } |
1530 | ||
1531 | /* Return the size of an unsigned LEB128 quantity. */ | |
1532 | ||
1533 | static inline unsigned long | |
1534 | size_of_uleb128 (value) | |
1535 | register unsigned long value; | |
1536 | { | |
1537 | register unsigned long size = 0; | |
1538 | register unsigned byte; | |
1539 | ||
1540 | do | |
1541 | { | |
1542 | byte = (value & 0x7f); | |
1543 | value >>= 7; | |
1544 | size += 1; | |
1545 | } | |
1546 | while (value != 0); | |
1547 | ||
1548 | return size; | |
1549 | } | |
1550 | ||
1551 | /* Return the size of a signed LEB128 quantity. */ | |
1552 | ||
1553 | static inline unsigned long | |
1554 | size_of_sleb128 (value) | |
1555 | register long value; | |
1556 | { | |
1557 | register unsigned long size = 0; | |
1558 | register unsigned byte; | |
1559 | ||
1560 | do | |
1561 | { | |
1562 | byte = (value & 0x7f); | |
1563 | value >>= 7; | |
1564 | size += 1; | |
1565 | } | |
1566 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
1567 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1568 | ||
1569 | return size; | |
1570 | } | |
1571 | ||
3f76745e JM |
1572 | /* Output an unsigned LEB128 quantity. */ |
1573 | ||
1574 | static void | |
1575 | output_uleb128 (value) | |
1576 | register unsigned long value; | |
1577 | { | |
1578 | unsigned long save_value = value; | |
1579 | ||
e8638df0 | 1580 | fprintf (asm_out_file, "%s", ASM_BYTE_OP); |
3f76745e JM |
1581 | do |
1582 | { | |
1583 | register unsigned byte = (value & 0x7f); | |
1584 | value >>= 7; | |
1585 | if (value != 0) | |
1586 | /* More bytes to follow. */ | |
1587 | byte |= 0x80; | |
1588 | ||
1589 | fprintf (asm_out_file, "0x%x", byte); | |
1590 | if (value != 0) | |
1591 | fprintf (asm_out_file, ","); | |
1592 | } | |
1593 | while (value != 0); | |
1594 | ||
c5cec899 | 1595 | if (flag_debug_asm) |
2d8b0f3a | 1596 | fprintf (asm_out_file, "\t%s ULEB128 0x%lx", ASM_COMMENT_START, save_value); |
3f76745e JM |
1597 | } |
1598 | ||
1599 | /* Output an signed LEB128 quantity. */ | |
1600 | ||
1601 | static void | |
1602 | output_sleb128 (value) | |
1603 | register long value; | |
1604 | { | |
1605 | register int more; | |
1606 | register unsigned byte; | |
1607 | long save_value = value; | |
1608 | ||
e8638df0 | 1609 | fprintf (asm_out_file, "%s", ASM_BYTE_OP); |
3f76745e JM |
1610 | do |
1611 | { | |
1612 | byte = (value & 0x7f); | |
1613 | /* arithmetic shift */ | |
1614 | value >>= 7; | |
1615 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
1616 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1617 | if (more) | |
1618 | byte |= 0x80; | |
1619 | ||
1620 | fprintf (asm_out_file, "0x%x", byte); | |
1621 | if (more) | |
1622 | fprintf (asm_out_file, ","); | |
1623 | } | |
1624 | ||
1625 | while (more); | |
c5cec899 | 1626 | if (flag_debug_asm) |
2d8b0f3a | 1627 | fprintf (asm_out_file, "\t%s SLEB128 %ld", ASM_COMMENT_START, save_value); |
3f76745e JM |
1628 | } |
1629 | ||
1630 | /* Output a Call Frame Information opcode and its operand(s). */ | |
1631 | ||
1632 | static void | |
1633 | output_cfi (cfi, fde) | |
1634 | register dw_cfi_ref cfi; | |
1635 | register dw_fde_ref fde; | |
1636 | { | |
1637 | if (cfi->dw_cfi_opc == DW_CFA_advance_loc) | |
1638 | { | |
1639 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1640 | cfi->dw_cfi_opc | |
1641 | | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)); | |
c5cec899 | 1642 | if (flag_debug_asm) |
2d8b0f3a | 1643 | fprintf (asm_out_file, "\t%s DW_CFA_advance_loc 0x%lx", |
3f76745e JM |
1644 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_offset); |
1645 | fputc ('\n', asm_out_file); | |
1646 | } | |
1647 | ||
1648 | else if (cfi->dw_cfi_opc == DW_CFA_offset) | |
1649 | { | |
1650 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1651 | cfi->dw_cfi_opc | |
1652 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1653 | if (flag_debug_asm) |
2d8b0f3a | 1654 | fprintf (asm_out_file, "\t%s DW_CFA_offset, column 0x%lx", |
3f76745e JM |
1655 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); |
1656 | ||
1657 | fputc ('\n', asm_out_file); | |
1658 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1659 | fputc ('\n', asm_out_file); | |
1660 | } | |
1661 | else if (cfi->dw_cfi_opc == DW_CFA_restore) | |
1662 | { | |
1663 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1664 | cfi->dw_cfi_opc | |
1665 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1666 | if (flag_debug_asm) |
2d8b0f3a | 1667 | fprintf (asm_out_file, "\t%s DW_CFA_restore, column 0x%lx", |
3f76745e JM |
1668 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); |
1669 | ||
1670 | fputc ('\n', asm_out_file); | |
1671 | } | |
1672 | else | |
1673 | { | |
1674 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, cfi->dw_cfi_opc); | |
c5cec899 | 1675 | if (flag_debug_asm) |
3f76745e JM |
1676 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
1677 | dwarf_cfi_name (cfi->dw_cfi_opc)); | |
1678 | ||
1679 | fputc ('\n', asm_out_file); | |
1680 | switch (cfi->dw_cfi_opc) | |
1681 | { | |
1682 | case DW_CFA_set_loc: | |
556273e0 KH |
1683 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, cfi->dw_cfi_oprnd1.dw_cfi_addr); |
1684 | fputc ('\n', asm_out_file); | |
3f76745e JM |
1685 | break; |
1686 | case DW_CFA_advance_loc1: | |
bb727b5a JM |
1687 | ASM_OUTPUT_DWARF_DELTA1 (asm_out_file, |
1688 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1689 | fde->dw_fde_current_label); | |
1690 | fputc ('\n', asm_out_file); | |
1691 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
3f76745e JM |
1692 | break; |
1693 | case DW_CFA_advance_loc2: | |
556273e0 | 1694 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, |
3f76745e JM |
1695 | cfi->dw_cfi_oprnd1.dw_cfi_addr, |
1696 | fde->dw_fde_current_label); | |
1697 | fputc ('\n', asm_out_file); | |
1698 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1699 | break; | |
1700 | case DW_CFA_advance_loc4: | |
556273e0 | 1701 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, |
3f76745e JM |
1702 | cfi->dw_cfi_oprnd1.dw_cfi_addr, |
1703 | fde->dw_fde_current_label); | |
556273e0 | 1704 | fputc ('\n', asm_out_file); |
3f76745e JM |
1705 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; |
1706 | break; | |
1707 | #ifdef MIPS_DEBUGGING_INFO | |
1708 | case DW_CFA_MIPS_advance_loc8: | |
1709 | /* TODO: not currently implemented. */ | |
1710 | abort (); | |
1711 | break; | |
1712 | #endif | |
1713 | case DW_CFA_offset_extended: | |
3f388b42 | 1714 | case DW_CFA_GNU_negative_offset_extended: |
3f76745e JM |
1715 | case DW_CFA_def_cfa: |
1716 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
556273e0 | 1717 | fputc ('\n', asm_out_file); |
3f76745e | 1718 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); |
556273e0 | 1719 | fputc ('\n', asm_out_file); |
3f76745e JM |
1720 | break; |
1721 | case DW_CFA_restore_extended: | |
1722 | case DW_CFA_undefined: | |
1723 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
556273e0 | 1724 | fputc ('\n', asm_out_file); |
3f76745e JM |
1725 | break; |
1726 | case DW_CFA_same_value: | |
1727 | case DW_CFA_def_cfa_register: | |
1728 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
556273e0 | 1729 | fputc ('\n', asm_out_file); |
3f76745e JM |
1730 | break; |
1731 | case DW_CFA_register: | |
1732 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
556273e0 | 1733 | fputc ('\n', asm_out_file); |
3f76745e | 1734 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_reg_num); |
556273e0 | 1735 | fputc ('\n', asm_out_file); |
3f76745e JM |
1736 | break; |
1737 | case DW_CFA_def_cfa_offset: | |
1738 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
556273e0 | 1739 | fputc ('\n', asm_out_file); |
3f76745e | 1740 | break; |
c53aa195 JM |
1741 | case DW_CFA_GNU_window_save: |
1742 | break; | |
0021b564 JM |
1743 | case DW_CFA_GNU_args_size: |
1744 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
556273e0 | 1745 | fputc ('\n', asm_out_file); |
0021b564 | 1746 | break; |
7d9d8943 AM |
1747 | case DW_CFA_def_cfa_expression: |
1748 | output_cfa_loc (cfi); | |
1749 | break; | |
3f76745e JM |
1750 | default: |
1751 | break; | |
1752 | } | |
556273e0 | 1753 | } |
3f76745e JM |
1754 | } |
1755 | ||
1756 | /* Output the call frame information used to used to record information | |
1757 | that relates to calculating the frame pointer, and records the | |
1758 | location of saved registers. */ | |
1759 | ||
1760 | static void | |
1761 | output_call_frame_info (for_eh) | |
1762 | int for_eh; | |
1763 | { | |
2d8b0f3a | 1764 | register unsigned long i; |
3f76745e | 1765 | register dw_fde_ref fde; |
3f76745e | 1766 | register dw_cfi_ref cfi; |
a6ab3aad | 1767 | char l1[20], l2[20]; |
2ed2af28 PDM |
1768 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1769 | char ld[20]; | |
1770 | #endif | |
a6ab3aad JM |
1771 | |
1772 | /* Do we want to include a pointer to the exception table? */ | |
1773 | int eh_ptr = for_eh && exception_table_p (); | |
3f76745e | 1774 | |
737faf14 JM |
1775 | /* If we don't have any functions we'll want to unwind out of, don't |
1776 | emit any EH unwind information. */ | |
1777 | if (for_eh) | |
1778 | { | |
1779 | for (i = 0; i < fde_table_in_use; ++i) | |
1780 | if (! fde_table[i].nothrow) | |
1781 | goto found; | |
1782 | return; | |
1783 | found:; | |
1784 | } | |
1785 | ||
3f76745e | 1786 | fputc ('\n', asm_out_file); |
e9e30253 | 1787 | |
aa0c1401 JL |
1788 | /* We're going to be generating comments, so turn on app. */ |
1789 | if (flag_debug_asm) | |
1790 | app_enable (); | |
956d6950 | 1791 | |
3f76745e JM |
1792 | if (for_eh) |
1793 | { | |
1794 | #ifdef EH_FRAME_SECTION | |
0021b564 | 1795 | EH_FRAME_SECTION (); |
3f76745e | 1796 | #else |
496651db | 1797 | tree label = get_file_function_name ('F'); |
0021b564 | 1798 | |
3167de5b | 1799 | force_data_section (); |
a1a4189d | 1800 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (DWARF2_ADDR_SIZE)); |
0021b564 JM |
1801 | ASM_GLOBALIZE_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); |
1802 | ASM_OUTPUT_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); | |
3f76745e JM |
1803 | #endif |
1804 | assemble_label ("__FRAME_BEGIN__"); | |
1805 | } | |
1806 | else | |
1807 | ASM_OUTPUT_SECTION (asm_out_file, FRAME_SECTION); | |
1808 | ||
556273e0 | 1809 | /* Output the CIE. */ |
a6ab3aad JM |
1810 | ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh); |
1811 | ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh); | |
2ed2af28 PDM |
1812 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1813 | ASM_GENERATE_INTERNAL_LABEL (ld, CIE_LENGTH_LABEL, for_eh); | |
1814 | if (for_eh) | |
7bb9fb0e | 1815 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1816 | else |
1817 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1818 | #else | |
267c09ab JM |
1819 | if (for_eh) |
1820 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1821 | else | |
1822 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1823 | #endif |
c5cec899 | 1824 | if (flag_debug_asm) |
3f76745e JM |
1825 | fprintf (asm_out_file, "\t%s Length of Common Information Entry", |
1826 | ASM_COMMENT_START); | |
1827 | ||
1828 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1829 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1830 | ||
d84e64d4 JM |
1831 | if (for_eh) |
1832 | /* Now that the CIE pointer is PC-relative for EH, | |
1833 | use 0 to identify the CIE. */ | |
1834 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); | |
1835 | else | |
1836 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1837 | ||
c5cec899 | 1838 | if (flag_debug_asm) |
3f76745e JM |
1839 | fprintf (asm_out_file, "\t%s CIE Identifier Tag", ASM_COMMENT_START); |
1840 | ||
1841 | fputc ('\n', asm_out_file); | |
d84e64d4 | 1842 | if (! for_eh && DWARF_OFFSET_SIZE == 8) |
3f76745e JM |
1843 | { |
1844 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1845 | fputc ('\n', asm_out_file); | |
1846 | } | |
1847 | ||
1848 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_CIE_VERSION); | |
c5cec899 | 1849 | if (flag_debug_asm) |
3f76745e JM |
1850 | fprintf (asm_out_file, "\t%s CIE Version", ASM_COMMENT_START); |
1851 | ||
1852 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1853 | if (eh_ptr) |
1854 | { | |
d84e64d4 JM |
1855 | /* The CIE contains a pointer to the exception region info for the |
1856 | frame. Make the augmentation string three bytes (including the | |
1857 | trailing null) so the pointer is 4-byte aligned. The Solaris ld | |
1858 | can't handle unaligned relocs. */ | |
c5cec899 | 1859 | if (flag_debug_asm) |
8d4e65a6 JL |
1860 | { |
1861 | ASM_OUTPUT_DWARF_STRING (asm_out_file, "eh"); | |
1862 | fprintf (asm_out_file, "\t%s CIE Augmentation", ASM_COMMENT_START); | |
1863 | } | |
1864 | else | |
1865 | { | |
c2c85462 | 1866 | ASM_OUTPUT_ASCII (asm_out_file, "eh", 3); |
8d4e65a6 | 1867 | } |
d84e64d4 JM |
1868 | fputc ('\n', asm_out_file); |
1869 | ||
1870 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, "__EXCEPTION_TABLE__"); | |
1871 | if (flag_debug_asm) | |
1872 | fprintf (asm_out_file, "\t%s pointer to exception region info", | |
1873 | ASM_COMMENT_START); | |
a6ab3aad JM |
1874 | } |
1875 | else | |
1876 | { | |
1877 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 1878 | if (flag_debug_asm) |
a6ab3aad JM |
1879 | fprintf (asm_out_file, "\t%s CIE Augmentation (none)", |
1880 | ASM_COMMENT_START); | |
1881 | } | |
3f76745e JM |
1882 | |
1883 | fputc ('\n', asm_out_file); | |
1884 | output_uleb128 (1); | |
c5cec899 | 1885 | if (flag_debug_asm) |
3f76745e JM |
1886 | fprintf (asm_out_file, " (CIE Code Alignment Factor)"); |
1887 | ||
1888 | fputc ('\n', asm_out_file); | |
1889 | output_sleb128 (DWARF_CIE_DATA_ALIGNMENT); | |
c5cec899 | 1890 | if (flag_debug_asm) |
3f76745e JM |
1891 | fprintf (asm_out_file, " (CIE Data Alignment Factor)"); |
1892 | ||
1893 | fputc ('\n', asm_out_file); | |
1894 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_FRAME_RETURN_COLUMN); | |
c5cec899 | 1895 | if (flag_debug_asm) |
3f76745e JM |
1896 | fprintf (asm_out_file, "\t%s CIE RA Column", ASM_COMMENT_START); |
1897 | ||
1898 | fputc ('\n', asm_out_file); | |
1899 | ||
1900 | for (cfi = cie_cfi_head; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1901 | output_cfi (cfi, NULL); | |
1902 | ||
1903 | /* Pad the CIE out to an address sized boundary. */ | |
a1a4189d | 1904 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (DWARF2_ADDR_SIZE)); |
a6ab3aad | 1905 | ASM_OUTPUT_LABEL (asm_out_file, l2); |
2ed2af28 PDM |
1906 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1907 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1908 | if (flag_debug_asm) |
1909 | fprintf (asm_out_file, "\t%s CIE Length Symbol", ASM_COMMENT_START); | |
1910 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1911 | #endif |
3f76745e JM |
1912 | |
1913 | /* Loop through all of the FDE's. */ | |
1914 | for (i = 0; i < fde_table_in_use; ++i) | |
1915 | { | |
1916 | fde = &fde_table[i]; | |
3f76745e | 1917 | |
737faf14 JM |
1918 | /* Don't emit EH unwind info for leaf functions. */ |
1919 | if (for_eh && fde->nothrow) | |
1920 | continue; | |
1921 | ||
556273e0 KH |
1922 | ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i * 2); |
1923 | ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i * 2); | |
2ed2af28 | 1924 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
556273e0 | 1925 | ASM_GENERATE_INTERNAL_LABEL (ld, FDE_LENGTH_LABEL, for_eh + i * 2); |
2ed2af28 | 1926 | if (for_eh) |
7bb9fb0e | 1927 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1928 | else |
1929 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1930 | #else | |
267c09ab JM |
1931 | if (for_eh) |
1932 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1933 | else | |
1934 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1935 | #endif |
c5cec899 | 1936 | if (flag_debug_asm) |
3f76745e | 1937 | fprintf (asm_out_file, "\t%s FDE Length", ASM_COMMENT_START); |
3f76745e | 1938 | fputc ('\n', asm_out_file); |
a6ab3aad JM |
1939 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1940 | ||
eef906d6 JW |
1941 | /* ??? This always emits a 4 byte offset when for_eh is true, but it |
1942 | emits a target dependent sized offset when for_eh is not true. | |
1943 | This inconsistency may confuse gdb. The only case where we need a | |
1944 | non-4 byte offset is for the Irix6 N64 ABI, so we may lose SGI | |
1945 | compatibility if we emit a 4 byte offset. We need a 4 byte offset | |
1946 | though in order to be compatible with the dwarf_fde struct in frame.c. | |
1947 | If the for_eh case is changed, then the struct in frame.c has | |
1948 | to be adjusted appropriately. */ | |
3f76745e | 1949 | if (for_eh) |
21af493b | 1950 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l1, "__FRAME_BEGIN__"); |
3f76745e JM |
1951 | else |
1952 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (FRAME_SECTION)); | |
c5cec899 | 1953 | if (flag_debug_asm) |
3f76745e JM |
1954 | fprintf (asm_out_file, "\t%s FDE CIE offset", ASM_COMMENT_START); |
1955 | ||
1956 | fputc ('\n', asm_out_file); | |
1957 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, fde->dw_fde_begin); | |
c5cec899 | 1958 | if (flag_debug_asm) |
3f76745e JM |
1959 | fprintf (asm_out_file, "\t%s FDE initial location", ASM_COMMENT_START); |
1960 | ||
1961 | fputc ('\n', asm_out_file); | |
1962 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, | |
1963 | fde->dw_fde_end, fde->dw_fde_begin); | |
c5cec899 | 1964 | if (flag_debug_asm) |
3f76745e JM |
1965 | fprintf (asm_out_file, "\t%s FDE address range", ASM_COMMENT_START); |
1966 | ||
1967 | fputc ('\n', asm_out_file); | |
1968 | ||
1969 | /* Loop through the Call Frame Instructions associated with | |
1970 | this FDE. */ | |
1971 | fde->dw_fde_current_label = fde->dw_fde_begin; | |
1972 | for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1973 | output_cfi (cfi, fde); | |
1974 | ||
a6ab3aad | 1975 | /* Pad the FDE out to an address sized boundary. */ |
a1a4189d | 1976 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (DWARF2_ADDR_SIZE)); |
a6ab3aad | 1977 | ASM_OUTPUT_LABEL (asm_out_file, l2); |
2ed2af28 PDM |
1978 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1979 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1980 | if (flag_debug_asm) |
1981 | fprintf (asm_out_file, "\t%s FDE Length Symbol", ASM_COMMENT_START); | |
1982 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1983 | #endif |
3f76745e JM |
1984 | } |
1985 | #ifndef EH_FRAME_SECTION | |
1986 | if (for_eh) | |
1987 | { | |
1988 | /* Emit terminating zero for table. */ | |
267c09ab | 1989 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); |
3f76745e JM |
1990 | fputc ('\n', asm_out_file); |
1991 | } | |
1992 | #endif | |
a6ab3aad JM |
1993 | #ifdef MIPS_DEBUGGING_INFO |
1994 | /* Work around Irix 6 assembler bug whereby labels at the end of a section | |
1995 | get a value of 0. Putting .align 0 after the label fixes it. */ | |
1996 | ASM_OUTPUT_ALIGN (asm_out_file, 0); | |
1997 | #endif | |
aa0c1401 JL |
1998 | |
1999 | /* Turn off app to make assembly quicker. */ | |
2000 | if (flag_debug_asm) | |
2001 | app_disable (); | |
a6ab3aad JM |
2002 | } |
2003 | ||
3f76745e JM |
2004 | /* Output a marker (i.e. a label) for the beginning of a function, before |
2005 | the prologue. */ | |
2006 | ||
2007 | void | |
2008 | dwarf2out_begin_prologue () | |
2009 | { | |
2010 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
2011 | register dw_fde_ref fde; | |
2012 | ||
4f988ea2 JM |
2013 | ++current_funcdef_number; |
2014 | ||
3f76745e JM |
2015 | function_section (current_function_decl); |
2016 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL, | |
2017 | current_funcdef_number); | |
2018 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
00262c8a | 2019 | current_function_func_begin_label = get_identifier (label); |
3f76745e JM |
2020 | |
2021 | /* Expand the fde table if necessary. */ | |
2022 | if (fde_table_in_use == fde_table_allocated) | |
2023 | { | |
2024 | fde_table_allocated += FDE_TABLE_INCREMENT; | |
2025 | fde_table | |
2026 | = (dw_fde_ref) xrealloc (fde_table, | |
2027 | fde_table_allocated * sizeof (dw_fde_node)); | |
a3f97cbb | 2028 | } |
3f76745e JM |
2029 | |
2030 | /* Record the FDE associated with this function. */ | |
2031 | current_funcdef_fde = fde_table_in_use; | |
2032 | ||
2033 | /* Add the new FDE at the end of the fde_table. */ | |
2034 | fde = &fde_table[fde_table_in_use++]; | |
2035 | fde->dw_fde_begin = xstrdup (label); | |
2036 | fde->dw_fde_current_label = NULL; | |
2037 | fde->dw_fde_end = NULL; | |
2038 | fde->dw_fde_cfi = NULL; | |
fb13d4d0 | 2039 | fde->nothrow = current_function_nothrow; |
737faf14 | 2040 | |
b57d9225 | 2041 | args_size = old_args_size = 0; |
3f76745e JM |
2042 | } |
2043 | ||
2044 | /* Output a marker (i.e. a label) for the absolute end of the generated code | |
2045 | for a function definition. This gets called *after* the epilogue code has | |
2046 | been generated. */ | |
2047 | ||
2048 | void | |
2049 | dwarf2out_end_epilogue () | |
2050 | { | |
2051 | dw_fde_ref fde; | |
2052 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
2053 | ||
2054 | /* Output a label to mark the endpoint of the code generated for this | |
2055 | function. */ | |
2056 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_END_LABEL, current_funcdef_number); | |
2057 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
2058 | fde = &fde_table[fde_table_in_use - 1]; | |
2059 | fde->dw_fde_end = xstrdup (label); | |
3f76745e JM |
2060 | } |
2061 | ||
2062 | void | |
2063 | dwarf2out_frame_init () | |
2064 | { | |
2065 | /* Allocate the initial hunk of the fde_table. */ | |
3de90026 | 2066 | fde_table = (dw_fde_ref) xcalloc (FDE_TABLE_INCREMENT, sizeof (dw_fde_node)); |
3f76745e JM |
2067 | fde_table_allocated = FDE_TABLE_INCREMENT; |
2068 | fde_table_in_use = 0; | |
2069 | ||
2070 | /* Generate the CFA instructions common to all FDE's. Do it now for the | |
2071 | sake of lookup_cfa. */ | |
2072 | ||
a6ab3aad | 2073 | #ifdef DWARF2_UNWIND_INFO |
91193900 AS |
2074 | /* On entry, the Canonical Frame Address is at SP. */ |
2075 | dwarf2out_def_cfa (NULL, STACK_POINTER_REGNUM, INCOMING_FRAME_SP_OFFSET); | |
2076 | initial_return_save (INCOMING_RETURN_ADDR_RTX); | |
3f76745e JM |
2077 | #endif |
2078 | } | |
2079 | ||
2080 | void | |
2081 | dwarf2out_frame_finish () | |
2082 | { | |
3f76745e | 2083 | /* Output call frame information. */ |
a6ab3aad | 2084 | #ifdef MIPS_DEBUGGING_INFO |
3f76745e JM |
2085 | if (write_symbols == DWARF2_DEBUG) |
2086 | output_call_frame_info (0); | |
14a774a9 | 2087 | if (flag_unwind_tables || (flag_exceptions && ! exceptions_via_longjmp)) |
3f76745e | 2088 | output_call_frame_info (1); |
a6ab3aad JM |
2089 | #else |
2090 | if (write_symbols == DWARF2_DEBUG | |
14a774a9 | 2091 | || flag_unwind_tables || (flag_exceptions && ! exceptions_via_longjmp)) |
556273e0 | 2092 | output_call_frame_info (1); |
a6ab3aad | 2093 | #endif |
556273e0 | 2094 | } |
7d9d8943 AM |
2095 | \f |
2096 | /* And now, the subset of the debugging information support code necessary | |
2097 | for emitting location expressions. */ | |
3f76745e | 2098 | |
7d9d8943 AM |
2099 | typedef struct dw_val_struct *dw_val_ref; |
2100 | typedef struct die_struct *dw_die_ref; | |
2101 | typedef struct dw_loc_descr_struct *dw_loc_descr_ref; | |
3f76745e JM |
2102 | |
2103 | /* Each DIE may have a series of attribute/value pairs. Values | |
2104 | can take on several forms. The forms that are used in this | |
2105 | implementation are listed below. */ | |
2106 | ||
2107 | typedef enum | |
2108 | { | |
2109 | dw_val_class_addr, | |
2110 | dw_val_class_loc, | |
2111 | dw_val_class_const, | |
2112 | dw_val_class_unsigned_const, | |
2113 | dw_val_class_long_long, | |
2114 | dw_val_class_float, | |
2115 | dw_val_class_flag, | |
2116 | dw_val_class_die_ref, | |
2117 | dw_val_class_fde_ref, | |
2118 | dw_val_class_lbl_id, | |
8b790721 | 2119 | dw_val_class_lbl_offset, |
3f76745e | 2120 | dw_val_class_str |
a3f97cbb | 2121 | } |
3f76745e | 2122 | dw_val_class; |
a3f97cbb | 2123 | |
3f76745e | 2124 | /* Describe a double word constant value. */ |
21217bd0 | 2125 | /* ??? Every instance of long_long in the code really means CONST_DOUBLE. */ |
3f76745e JM |
2126 | |
2127 | typedef struct dw_long_long_struct | |
a3f97cbb | 2128 | { |
3f76745e JM |
2129 | unsigned long hi; |
2130 | unsigned long low; | |
2131 | } | |
2132 | dw_long_long_const; | |
2133 | ||
2134 | /* Describe a floating point constant value. */ | |
2135 | ||
2136 | typedef struct dw_fp_struct | |
2137 | { | |
2138 | long *array; | |
2139 | unsigned length; | |
2140 | } | |
2141 | dw_float_const; | |
2142 | ||
956d6950 | 2143 | /* The dw_val_node describes an attribute's value, as it is |
3f76745e JM |
2144 | represented internally. */ |
2145 | ||
2146 | typedef struct dw_val_struct | |
2147 | { | |
2148 | dw_val_class val_class; | |
2149 | union | |
a3f97cbb | 2150 | { |
1865dbb5 | 2151 | rtx val_addr; |
3f76745e JM |
2152 | dw_loc_descr_ref val_loc; |
2153 | long int val_int; | |
2154 | long unsigned val_unsigned; | |
2155 | dw_long_long_const val_long_long; | |
2156 | dw_float_const val_float; | |
881c6935 JM |
2157 | struct { |
2158 | dw_die_ref die; | |
2159 | int external; | |
2160 | } val_die_ref; | |
3f76745e JM |
2161 | unsigned val_fde_index; |
2162 | char *val_str; | |
2163 | char *val_lbl_id; | |
3f76745e | 2164 | unsigned char val_flag; |
a3f97cbb | 2165 | } |
3f76745e JM |
2166 | v; |
2167 | } | |
2168 | dw_val_node; | |
2169 | ||
2170 | /* Locations in memory are described using a sequence of stack machine | |
2171 | operations. */ | |
2172 | ||
2173 | typedef struct dw_loc_descr_struct | |
2174 | { | |
2175 | dw_loc_descr_ref dw_loc_next; | |
2176 | enum dwarf_location_atom dw_loc_opc; | |
2177 | dw_val_node dw_loc_oprnd1; | |
2178 | dw_val_node dw_loc_oprnd2; | |
d8041cc8 | 2179 | int dw_loc_addr; |
3f76745e JM |
2180 | } |
2181 | dw_loc_descr_node; | |
2182 | ||
7d9d8943 AM |
2183 | static const char *dwarf_stack_op_name PARAMS ((unsigned)); |
2184 | static dw_loc_descr_ref new_loc_descr PARAMS ((enum dwarf_location_atom, | |
2185 | unsigned long, | |
2186 | unsigned long)); | |
2187 | static void add_loc_descr PARAMS ((dw_loc_descr_ref *, | |
2188 | dw_loc_descr_ref)); | |
2189 | static unsigned long size_of_loc_descr PARAMS ((dw_loc_descr_ref)); | |
2190 | static unsigned long size_of_locs PARAMS ((dw_loc_descr_ref)); | |
2191 | static void output_loc_operands PARAMS ((dw_loc_descr_ref)); | |
2192 | static void output_loc_sequence PARAMS ((dw_loc_descr_ref)); | |
3f76745e | 2193 | |
7d9d8943 | 2194 | /* Convert a DWARF stack opcode into its string name. */ |
3f76745e | 2195 | |
7d9d8943 AM |
2196 | static const char * |
2197 | dwarf_stack_op_name (op) | |
2198 | register unsigned op; | |
ef76d03b | 2199 | { |
7d9d8943 AM |
2200 | switch (op) |
2201 | { | |
2202 | case DW_OP_addr: | |
2203 | return "DW_OP_addr"; | |
2204 | case DW_OP_deref: | |
2205 | return "DW_OP_deref"; | |
2206 | case DW_OP_const1u: | |
2207 | return "DW_OP_const1u"; | |
2208 | case DW_OP_const1s: | |
2209 | return "DW_OP_const1s"; | |
2210 | case DW_OP_const2u: | |
2211 | return "DW_OP_const2u"; | |
2212 | case DW_OP_const2s: | |
2213 | return "DW_OP_const2s"; | |
2214 | case DW_OP_const4u: | |
2215 | return "DW_OP_const4u"; | |
2216 | case DW_OP_const4s: | |
2217 | return "DW_OP_const4s"; | |
2218 | case DW_OP_const8u: | |
2219 | return "DW_OP_const8u"; | |
2220 | case DW_OP_const8s: | |
2221 | return "DW_OP_const8s"; | |
2222 | case DW_OP_constu: | |
2223 | return "DW_OP_constu"; | |
2224 | case DW_OP_consts: | |
2225 | return "DW_OP_consts"; | |
2226 | case DW_OP_dup: | |
2227 | return "DW_OP_dup"; | |
2228 | case DW_OP_drop: | |
2229 | return "DW_OP_drop"; | |
2230 | case DW_OP_over: | |
2231 | return "DW_OP_over"; | |
2232 | case DW_OP_pick: | |
2233 | return "DW_OP_pick"; | |
2234 | case DW_OP_swap: | |
2235 | return "DW_OP_swap"; | |
2236 | case DW_OP_rot: | |
2237 | return "DW_OP_rot"; | |
2238 | case DW_OP_xderef: | |
2239 | return "DW_OP_xderef"; | |
2240 | case DW_OP_abs: | |
2241 | return "DW_OP_abs"; | |
2242 | case DW_OP_and: | |
2243 | return "DW_OP_and"; | |
2244 | case DW_OP_div: | |
2245 | return "DW_OP_div"; | |
2246 | case DW_OP_minus: | |
2247 | return "DW_OP_minus"; | |
2248 | case DW_OP_mod: | |
2249 | return "DW_OP_mod"; | |
2250 | case DW_OP_mul: | |
2251 | return "DW_OP_mul"; | |
2252 | case DW_OP_neg: | |
2253 | return "DW_OP_neg"; | |
2254 | case DW_OP_not: | |
2255 | return "DW_OP_not"; | |
2256 | case DW_OP_or: | |
2257 | return "DW_OP_or"; | |
2258 | case DW_OP_plus: | |
2259 | return "DW_OP_plus"; | |
2260 | case DW_OP_plus_uconst: | |
2261 | return "DW_OP_plus_uconst"; | |
2262 | case DW_OP_shl: | |
2263 | return "DW_OP_shl"; | |
2264 | case DW_OP_shr: | |
2265 | return "DW_OP_shr"; | |
2266 | case DW_OP_shra: | |
2267 | return "DW_OP_shra"; | |
2268 | case DW_OP_xor: | |
2269 | return "DW_OP_xor"; | |
2270 | case DW_OP_bra: | |
2271 | return "DW_OP_bra"; | |
2272 | case DW_OP_eq: | |
2273 | return "DW_OP_eq"; | |
2274 | case DW_OP_ge: | |
2275 | return "DW_OP_ge"; | |
2276 | case DW_OP_gt: | |
2277 | return "DW_OP_gt"; | |
2278 | case DW_OP_le: | |
2279 | return "DW_OP_le"; | |
2280 | case DW_OP_lt: | |
2281 | return "DW_OP_lt"; | |
2282 | case DW_OP_ne: | |
2283 | return "DW_OP_ne"; | |
2284 | case DW_OP_skip: | |
2285 | return "DW_OP_skip"; | |
2286 | case DW_OP_lit0: | |
2287 | return "DW_OP_lit0"; | |
2288 | case DW_OP_lit1: | |
2289 | return "DW_OP_lit1"; | |
2290 | case DW_OP_lit2: | |
2291 | return "DW_OP_lit2"; | |
2292 | case DW_OP_lit3: | |
2293 | return "DW_OP_lit3"; | |
2294 | case DW_OP_lit4: | |
2295 | return "DW_OP_lit4"; | |
2296 | case DW_OP_lit5: | |
2297 | return "DW_OP_lit5"; | |
2298 | case DW_OP_lit6: | |
2299 | return "DW_OP_lit6"; | |
2300 | case DW_OP_lit7: | |
2301 | return "DW_OP_lit7"; | |
2302 | case DW_OP_lit8: | |
2303 | return "DW_OP_lit8"; | |
2304 | case DW_OP_lit9: | |
2305 | return "DW_OP_lit9"; | |
2306 | case DW_OP_lit10: | |
2307 | return "DW_OP_lit10"; | |
2308 | case DW_OP_lit11: | |
2309 | return "DW_OP_lit11"; | |
2310 | case DW_OP_lit12: | |
2311 | return "DW_OP_lit12"; | |
2312 | case DW_OP_lit13: | |
2313 | return "DW_OP_lit13"; | |
2314 | case DW_OP_lit14: | |
2315 | return "DW_OP_lit14"; | |
2316 | case DW_OP_lit15: | |
2317 | return "DW_OP_lit15"; | |
2318 | case DW_OP_lit16: | |
2319 | return "DW_OP_lit16"; | |
2320 | case DW_OP_lit17: | |
2321 | return "DW_OP_lit17"; | |
2322 | case DW_OP_lit18: | |
2323 | return "DW_OP_lit18"; | |
2324 | case DW_OP_lit19: | |
2325 | return "DW_OP_lit19"; | |
2326 | case DW_OP_lit20: | |
2327 | return "DW_OP_lit20"; | |
2328 | case DW_OP_lit21: | |
2329 | return "DW_OP_lit21"; | |
2330 | case DW_OP_lit22: | |
2331 | return "DW_OP_lit22"; | |
2332 | case DW_OP_lit23: | |
2333 | return "DW_OP_lit23"; | |
2334 | case DW_OP_lit24: | |
2335 | return "DW_OP_lit24"; | |
2336 | case DW_OP_lit25: | |
2337 | return "DW_OP_lit25"; | |
2338 | case DW_OP_lit26: | |
2339 | return "DW_OP_lit26"; | |
2340 | case DW_OP_lit27: | |
2341 | return "DW_OP_lit27"; | |
2342 | case DW_OP_lit28: | |
2343 | return "DW_OP_lit28"; | |
2344 | case DW_OP_lit29: | |
2345 | return "DW_OP_lit29"; | |
2346 | case DW_OP_lit30: | |
2347 | return "DW_OP_lit30"; | |
2348 | case DW_OP_lit31: | |
2349 | return "DW_OP_lit31"; | |
2350 | case DW_OP_reg0: | |
2351 | return "DW_OP_reg0"; | |
2352 | case DW_OP_reg1: | |
2353 | return "DW_OP_reg1"; | |
2354 | case DW_OP_reg2: | |
2355 | return "DW_OP_reg2"; | |
2356 | case DW_OP_reg3: | |
2357 | return "DW_OP_reg3"; | |
2358 | case DW_OP_reg4: | |
2359 | return "DW_OP_reg4"; | |
2360 | case DW_OP_reg5: | |
2361 | return "DW_OP_reg5"; | |
2362 | case DW_OP_reg6: | |
2363 | return "DW_OP_reg6"; | |
2364 | case DW_OP_reg7: | |
2365 | return "DW_OP_reg7"; | |
2366 | case DW_OP_reg8: | |
2367 | return "DW_OP_reg8"; | |
2368 | case DW_OP_reg9: | |
2369 | return "DW_OP_reg9"; | |
2370 | case DW_OP_reg10: | |
2371 | return "DW_OP_reg10"; | |
2372 | case DW_OP_reg11: | |
2373 | return "DW_OP_reg11"; | |
2374 | case DW_OP_reg12: | |
2375 | return "DW_OP_reg12"; | |
2376 | case DW_OP_reg13: | |
2377 | return "DW_OP_reg13"; | |
2378 | case DW_OP_reg14: | |
2379 | return "DW_OP_reg14"; | |
2380 | case DW_OP_reg15: | |
2381 | return "DW_OP_reg15"; | |
2382 | case DW_OP_reg16: | |
2383 | return "DW_OP_reg16"; | |
2384 | case DW_OP_reg17: | |
2385 | return "DW_OP_reg17"; | |
2386 | case DW_OP_reg18: | |
2387 | return "DW_OP_reg18"; | |
2388 | case DW_OP_reg19: | |
2389 | return "DW_OP_reg19"; | |
2390 | case DW_OP_reg20: | |
2391 | return "DW_OP_reg20"; | |
2392 | case DW_OP_reg21: | |
2393 | return "DW_OP_reg21"; | |
2394 | case DW_OP_reg22: | |
2395 | return "DW_OP_reg22"; | |
2396 | case DW_OP_reg23: | |
2397 | return "DW_OP_reg23"; | |
2398 | case DW_OP_reg24: | |
2399 | return "DW_OP_reg24"; | |
2400 | case DW_OP_reg25: | |
2401 | return "DW_OP_reg25"; | |
2402 | case DW_OP_reg26: | |
2403 | return "DW_OP_reg26"; | |
2404 | case DW_OP_reg27: | |
2405 | return "DW_OP_reg27"; | |
2406 | case DW_OP_reg28: | |
2407 | return "DW_OP_reg28"; | |
2408 | case DW_OP_reg29: | |
2409 | return "DW_OP_reg29"; | |
2410 | case DW_OP_reg30: | |
2411 | return "DW_OP_reg30"; | |
2412 | case DW_OP_reg31: | |
2413 | return "DW_OP_reg31"; | |
2414 | case DW_OP_breg0: | |
2415 | return "DW_OP_breg0"; | |
2416 | case DW_OP_breg1: | |
2417 | return "DW_OP_breg1"; | |
2418 | case DW_OP_breg2: | |
2419 | return "DW_OP_breg2"; | |
2420 | case DW_OP_breg3: | |
2421 | return "DW_OP_breg3"; | |
2422 | case DW_OP_breg4: | |
2423 | return "DW_OP_breg4"; | |
2424 | case DW_OP_breg5: | |
2425 | return "DW_OP_breg5"; | |
2426 | case DW_OP_breg6: | |
2427 | return "DW_OP_breg6"; | |
2428 | case DW_OP_breg7: | |
2429 | return "DW_OP_breg7"; | |
2430 | case DW_OP_breg8: | |
2431 | return "DW_OP_breg8"; | |
2432 | case DW_OP_breg9: | |
2433 | return "DW_OP_breg9"; | |
2434 | case DW_OP_breg10: | |
2435 | return "DW_OP_breg10"; | |
2436 | case DW_OP_breg11: | |
2437 | return "DW_OP_breg11"; | |
2438 | case DW_OP_breg12: | |
2439 | return "DW_OP_breg12"; | |
2440 | case DW_OP_breg13: | |
2441 | return "DW_OP_breg13"; | |
2442 | case DW_OP_breg14: | |
2443 | return "DW_OP_breg14"; | |
2444 | case DW_OP_breg15: | |
2445 | return "DW_OP_breg15"; | |
2446 | case DW_OP_breg16: | |
2447 | return "DW_OP_breg16"; | |
2448 | case DW_OP_breg17: | |
2449 | return "DW_OP_breg17"; | |
2450 | case DW_OP_breg18: | |
2451 | return "DW_OP_breg18"; | |
2452 | case DW_OP_breg19: | |
2453 | return "DW_OP_breg19"; | |
2454 | case DW_OP_breg20: | |
2455 | return "DW_OP_breg20"; | |
2456 | case DW_OP_breg21: | |
2457 | return "DW_OP_breg21"; | |
2458 | case DW_OP_breg22: | |
2459 | return "DW_OP_breg22"; | |
2460 | case DW_OP_breg23: | |
2461 | return "DW_OP_breg23"; | |
2462 | case DW_OP_breg24: | |
2463 | return "DW_OP_breg24"; | |
2464 | case DW_OP_breg25: | |
2465 | return "DW_OP_breg25"; | |
2466 | case DW_OP_breg26: | |
2467 | return "DW_OP_breg26"; | |
2468 | case DW_OP_breg27: | |
2469 | return "DW_OP_breg27"; | |
2470 | case DW_OP_breg28: | |
2471 | return "DW_OP_breg28"; | |
2472 | case DW_OP_breg29: | |
2473 | return "DW_OP_breg29"; | |
2474 | case DW_OP_breg30: | |
2475 | return "DW_OP_breg30"; | |
2476 | case DW_OP_breg31: | |
2477 | return "DW_OP_breg31"; | |
2478 | case DW_OP_regx: | |
2479 | return "DW_OP_regx"; | |
2480 | case DW_OP_fbreg: | |
2481 | return "DW_OP_fbreg"; | |
2482 | case DW_OP_bregx: | |
2483 | return "DW_OP_bregx"; | |
2484 | case DW_OP_piece: | |
2485 | return "DW_OP_piece"; | |
2486 | case DW_OP_deref_size: | |
2487 | return "DW_OP_deref_size"; | |
2488 | case DW_OP_xderef_size: | |
2489 | return "DW_OP_xderef_size"; | |
2490 | case DW_OP_nop: | |
2491 | return "DW_OP_nop"; | |
3f76745e | 2492 | default: |
7d9d8943 | 2493 | return "OP_<unknown>"; |
3f76745e | 2494 | } |
bdb669cb | 2495 | } |
a3f97cbb | 2496 | |
7d9d8943 AM |
2497 | /* Return a pointer to a newly allocated location description. Location |
2498 | descriptions are simple expression terms that can be strung | |
2499 | together to form more complicated location (address) descriptions. */ | |
2500 | ||
2501 | static inline dw_loc_descr_ref | |
2502 | new_loc_descr (op, oprnd1, oprnd2) | |
2503 | register enum dwarf_location_atom op; | |
2504 | register unsigned long oprnd1; | |
2505 | register unsigned long oprnd2; | |
4b674448 | 2506 | { |
5de0e8d4 JM |
2507 | /* Use xcalloc here so we clear out all of the long_long constant in |
2508 | the union. */ | |
7d9d8943 | 2509 | register dw_loc_descr_ref descr |
5de0e8d4 | 2510 | = (dw_loc_descr_ref) xcalloc (1, sizeof (dw_loc_descr_node)); |
71dfc51f | 2511 | |
7d9d8943 AM |
2512 | descr->dw_loc_opc = op; |
2513 | descr->dw_loc_oprnd1.val_class = dw_val_class_unsigned_const; | |
2514 | descr->dw_loc_oprnd1.v.val_unsigned = oprnd1; | |
2515 | descr->dw_loc_oprnd2.val_class = dw_val_class_unsigned_const; | |
2516 | descr->dw_loc_oprnd2.v.val_unsigned = oprnd2; | |
71dfc51f | 2517 | |
7d9d8943 AM |
2518 | return descr; |
2519 | } | |
2520 | ||
2521 | /* Add a location description term to a location description expression. */ | |
2522 | ||
2523 | static inline void | |
2524 | add_loc_descr (list_head, descr) | |
2525 | register dw_loc_descr_ref *list_head; | |
2526 | register dw_loc_descr_ref descr; | |
2527 | { | |
2528 | register dw_loc_descr_ref *d; | |
2529 | ||
2530 | /* Find the end of the chain. */ | |
2531 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) | |
2532 | ; | |
2533 | ||
2534 | *d = descr; | |
2535 | } | |
2536 | ||
2537 | /* Return the size of a location descriptor. */ | |
2538 | ||
2539 | static unsigned long | |
2540 | size_of_loc_descr (loc) | |
2541 | register dw_loc_descr_ref loc; | |
2542 | { | |
2543 | register unsigned long size = 1; | |
2544 | ||
2545 | switch (loc->dw_loc_opc) | |
2546 | { | |
2547 | case DW_OP_addr: | |
2548 | size += DWARF2_ADDR_SIZE; | |
2549 | break; | |
2550 | case DW_OP_const1u: | |
2551 | case DW_OP_const1s: | |
2552 | size += 1; | |
2553 | break; | |
2554 | case DW_OP_const2u: | |
2555 | case DW_OP_const2s: | |
2556 | size += 2; | |
2557 | break; | |
2558 | case DW_OP_const4u: | |
2559 | case DW_OP_const4s: | |
2560 | size += 4; | |
2561 | break; | |
2562 | case DW_OP_const8u: | |
2563 | case DW_OP_const8s: | |
2564 | size += 8; | |
2565 | break; | |
2566 | case DW_OP_constu: | |
2567 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2568 | break; | |
2569 | case DW_OP_consts: | |
2570 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
2571 | break; | |
2572 | case DW_OP_pick: | |
2573 | size += 1; | |
2574 | break; | |
2575 | case DW_OP_plus_uconst: | |
2576 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2577 | break; | |
2578 | case DW_OP_skip: | |
2579 | case DW_OP_bra: | |
2580 | size += 2; | |
2581 | break; | |
2582 | case DW_OP_breg0: | |
2583 | case DW_OP_breg1: | |
2584 | case DW_OP_breg2: | |
2585 | case DW_OP_breg3: | |
2586 | case DW_OP_breg4: | |
2587 | case DW_OP_breg5: | |
2588 | case DW_OP_breg6: | |
2589 | case DW_OP_breg7: | |
2590 | case DW_OP_breg8: | |
2591 | case DW_OP_breg9: | |
2592 | case DW_OP_breg10: | |
2593 | case DW_OP_breg11: | |
2594 | case DW_OP_breg12: | |
2595 | case DW_OP_breg13: | |
2596 | case DW_OP_breg14: | |
2597 | case DW_OP_breg15: | |
2598 | case DW_OP_breg16: | |
2599 | case DW_OP_breg17: | |
2600 | case DW_OP_breg18: | |
2601 | case DW_OP_breg19: | |
2602 | case DW_OP_breg20: | |
2603 | case DW_OP_breg21: | |
2604 | case DW_OP_breg22: | |
2605 | case DW_OP_breg23: | |
2606 | case DW_OP_breg24: | |
2607 | case DW_OP_breg25: | |
2608 | case DW_OP_breg26: | |
2609 | case DW_OP_breg27: | |
2610 | case DW_OP_breg28: | |
2611 | case DW_OP_breg29: | |
2612 | case DW_OP_breg30: | |
2613 | case DW_OP_breg31: | |
2614 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
2615 | break; | |
2616 | case DW_OP_regx: | |
2617 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2618 | break; | |
2619 | case DW_OP_fbreg: | |
2620 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
2621 | break; | |
2622 | case DW_OP_bregx: | |
2623 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2624 | size += size_of_sleb128 (loc->dw_loc_oprnd2.v.val_int); | |
2625 | break; | |
2626 | case DW_OP_piece: | |
2627 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
2628 | break; | |
2629 | case DW_OP_deref_size: | |
2630 | case DW_OP_xderef_size: | |
2631 | size += 1; | |
2632 | break; | |
3f76745e | 2633 | default: |
7d9d8943 | 2634 | break; |
4b674448 | 2635 | } |
7d9d8943 AM |
2636 | |
2637 | return size; | |
4b674448 JM |
2638 | } |
2639 | ||
7d9d8943 | 2640 | /* Return the size of a series of location descriptors. */ |
71dfc51f | 2641 | |
7d9d8943 AM |
2642 | static unsigned long |
2643 | size_of_locs (loc) | |
2644 | register dw_loc_descr_ref loc; | |
4b674448 | 2645 | { |
7d9d8943 AM |
2646 | register unsigned long size = 0; |
2647 | ||
2648 | for (; loc != NULL; loc = loc->dw_loc_next) | |
d8041cc8 RH |
2649 | { |
2650 | loc->dw_loc_addr = size; | |
2651 | size += size_of_loc_descr (loc); | |
2652 | } | |
7d9d8943 AM |
2653 | |
2654 | return size; | |
4b674448 JM |
2655 | } |
2656 | ||
7d9d8943 | 2657 | /* Output location description stack opcode's operands (if any). */ |
71dfc51f | 2658 | |
7d9d8943 AM |
2659 | static void |
2660 | output_loc_operands (loc) | |
2661 | register dw_loc_descr_ref loc; | |
a3f97cbb | 2662 | { |
7d9d8943 AM |
2663 | register dw_val_ref val1 = &loc->dw_loc_oprnd1; |
2664 | register dw_val_ref val2 = &loc->dw_loc_oprnd2; | |
2665 | ||
2666 | switch (loc->dw_loc_opc) | |
a3f97cbb | 2667 | { |
0517872a | 2668 | #ifdef DWARF2_DEBUGGING_INFO |
3f76745e | 2669 | case DW_OP_addr: |
7d9d8943 AM |
2670 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, val1->v.val_addr); |
2671 | fputc ('\n', asm_out_file); | |
2672 | break; | |
3f76745e | 2673 | case DW_OP_const2u: |
3f76745e | 2674 | case DW_OP_const2s: |
7d9d8943 AM |
2675 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); |
2676 | fputc ('\n', asm_out_file); | |
2677 | break; | |
3f76745e | 2678 | case DW_OP_const4u: |
3f76745e | 2679 | case DW_OP_const4s: |
7d9d8943 AM |
2680 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, val1->v.val_int); |
2681 | fputc ('\n', asm_out_file); | |
2682 | break; | |
3f76745e | 2683 | case DW_OP_const8u: |
3f76745e | 2684 | case DW_OP_const8s: |
7d9d8943 AM |
2685 | abort (); |
2686 | fputc ('\n', asm_out_file); | |
2687 | break; | |
0517872a JM |
2688 | case DW_OP_skip: |
2689 | case DW_OP_bra: | |
d8041cc8 RH |
2690 | { |
2691 | int offset; | |
2692 | ||
2693 | if (val1->val_class == dw_val_class_loc) | |
2694 | offset = val1->v.val_loc->dw_loc_addr - (loc->dw_loc_addr + 3); | |
2695 | else | |
2696 | abort (); | |
2697 | ||
2698 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, offset); | |
2699 | fputc ('\n', asm_out_file); | |
2700 | } | |
0517872a | 2701 | break; |
3139472f JM |
2702 | #else |
2703 | case DW_OP_addr: | |
2704 | case DW_OP_const2u: | |
2705 | case DW_OP_const2s: | |
2706 | case DW_OP_const4u: | |
2707 | case DW_OP_const4s: | |
2708 | case DW_OP_const8u: | |
2709 | case DW_OP_const8s: | |
2710 | case DW_OP_skip: | |
2711 | case DW_OP_bra: | |
2712 | /* We currently don't make any attempt to make sure these are | |
2713 | aligned properly like we do for the main unwind info, so | |
2714 | don't support emitting things larger than a byte if we're | |
2715 | only doing unwinding. */ | |
2716 | abort (); | |
0517872a JM |
2717 | #endif |
2718 | case DW_OP_const1u: | |
2719 | case DW_OP_const1s: | |
2720 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
2721 | fputc ('\n', asm_out_file); | |
2722 | break; | |
3f76745e | 2723 | case DW_OP_constu: |
7d9d8943 AM |
2724 | output_uleb128 (val1->v.val_unsigned); |
2725 | fputc ('\n', asm_out_file); | |
2726 | break; | |
3f76745e | 2727 | case DW_OP_consts: |
7d9d8943 AM |
2728 | output_sleb128 (val1->v.val_int); |
2729 | fputc ('\n', asm_out_file); | |
2730 | break; | |
2731 | case DW_OP_pick: | |
2732 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_int); | |
2733 | fputc ('\n', asm_out_file); | |
2734 | break; | |
2735 | case DW_OP_plus_uconst: | |
2736 | output_uleb128 (val1->v.val_unsigned); | |
2737 | fputc ('\n', asm_out_file); | |
2738 | break; | |
3f76745e | 2739 | case DW_OP_breg0: |
3f76745e | 2740 | case DW_OP_breg1: |
3f76745e | 2741 | case DW_OP_breg2: |
3f76745e | 2742 | case DW_OP_breg3: |
3f76745e | 2743 | case DW_OP_breg4: |
3f76745e | 2744 | case DW_OP_breg5: |
3f76745e | 2745 | case DW_OP_breg6: |
3f76745e | 2746 | case DW_OP_breg7: |
3f76745e | 2747 | case DW_OP_breg8: |
3f76745e | 2748 | case DW_OP_breg9: |
3f76745e | 2749 | case DW_OP_breg10: |
3f76745e | 2750 | case DW_OP_breg11: |
3f76745e | 2751 | case DW_OP_breg12: |
3f76745e | 2752 | case DW_OP_breg13: |
3f76745e | 2753 | case DW_OP_breg14: |
3f76745e | 2754 | case DW_OP_breg15: |
3f76745e | 2755 | case DW_OP_breg16: |
3f76745e | 2756 | case DW_OP_breg17: |
3f76745e | 2757 | case DW_OP_breg18: |
3f76745e | 2758 | case DW_OP_breg19: |
3f76745e | 2759 | case DW_OP_breg20: |
3f76745e | 2760 | case DW_OP_breg21: |
3f76745e | 2761 | case DW_OP_breg22: |
3f76745e | 2762 | case DW_OP_breg23: |
3f76745e | 2763 | case DW_OP_breg24: |
3f76745e | 2764 | case DW_OP_breg25: |
3f76745e | 2765 | case DW_OP_breg26: |
3f76745e | 2766 | case DW_OP_breg27: |
3f76745e | 2767 | case DW_OP_breg28: |
3f76745e | 2768 | case DW_OP_breg29: |
3f76745e | 2769 | case DW_OP_breg30: |
3f76745e | 2770 | case DW_OP_breg31: |
7d9d8943 AM |
2771 | output_sleb128 (val1->v.val_int); |
2772 | fputc ('\n', asm_out_file); | |
2773 | break; | |
3f76745e | 2774 | case DW_OP_regx: |
7d9d8943 AM |
2775 | output_uleb128 (val1->v.val_unsigned); |
2776 | fputc ('\n', asm_out_file); | |
2777 | break; | |
3f76745e | 2778 | case DW_OP_fbreg: |
7d9d8943 AM |
2779 | output_sleb128 (val1->v.val_int); |
2780 | fputc ('\n', asm_out_file); | |
2781 | break; | |
3f76745e | 2782 | case DW_OP_bregx: |
7d9d8943 AM |
2783 | output_uleb128 (val1->v.val_unsigned); |
2784 | fputc ('\n', asm_out_file); | |
2785 | output_sleb128 (val2->v.val_int); | |
2786 | fputc ('\n', asm_out_file); | |
2787 | break; | |
3f76745e | 2788 | case DW_OP_piece: |
7d9d8943 AM |
2789 | output_uleb128 (val1->v.val_unsigned); |
2790 | fputc ('\n', asm_out_file); | |
2791 | break; | |
3f76745e | 2792 | case DW_OP_deref_size: |
3f76745e | 2793 | case DW_OP_xderef_size: |
7d9d8943 AM |
2794 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); |
2795 | fputc ('\n', asm_out_file); | |
2796 | break; | |
2797 | default: | |
3139472f JM |
2798 | /* Other codes have no operands. */ |
2799 | break; | |
7d9d8943 AM |
2800 | } |
2801 | } | |
2802 | ||
2803 | /* Output a sequence of location operations. */ | |
2804 | ||
2805 | static void | |
2806 | output_loc_sequence (loc) | |
2807 | dw_loc_descr_ref loc; | |
2808 | { | |
2809 | for (; loc != NULL; loc = loc->dw_loc_next) | |
2810 | { | |
2811 | /* Output the opcode. */ | |
2812 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, loc->dw_loc_opc); | |
2813 | if (flag_debug_asm) | |
2814 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, | |
2815 | dwarf_stack_op_name (loc->dw_loc_opc)); | |
2816 | ||
2817 | fputc ('\n', asm_out_file); | |
2818 | ||
2819 | /* Output the operand(s) (if any). */ | |
2820 | output_loc_operands (loc); | |
2821 | } | |
2822 | } | |
2823 | ||
2824 | /* This routine will generate the correct assembly data for a location | |
2825 | description based on a cfi entry with a complex address. */ | |
2826 | ||
2827 | static void | |
2828 | output_cfa_loc (cfi) | |
2829 | dw_cfi_ref cfi; | |
2830 | { | |
2831 | dw_loc_descr_ref loc; | |
2832 | unsigned long size; | |
2833 | ||
2834 | /* Output the size of the block. */ | |
2835 | loc = cfi->dw_cfi_oprnd1.dw_cfi_loc; | |
2836 | size = size_of_locs (loc); | |
2837 | output_uleb128 (size); | |
2838 | fputc ('\n', asm_out_file); | |
2839 | ||
2840 | /* Now output the operations themselves. */ | |
2841 | output_loc_sequence (loc); | |
2842 | } | |
2843 | ||
556273e0 KH |
2844 | /* This function builds a dwarf location descriptor seqeunce from |
2845 | a dw_cfa_location. */ | |
7d9d8943 AM |
2846 | |
2847 | static struct dw_loc_descr_struct * | |
2848 | build_cfa_loc (cfa) | |
2849 | dw_cfa_location *cfa; | |
2850 | { | |
2851 | struct dw_loc_descr_struct *head, *tmp; | |
2852 | ||
2853 | if (cfa->indirect == 0) | |
2854 | abort (); | |
2855 | ||
2856 | if (cfa->base_offset) | |
f299afab HPN |
2857 | { |
2858 | if (cfa->reg <= 31) | |
2859 | head = new_loc_descr (DW_OP_breg0 + cfa->reg, cfa->base_offset, 0); | |
2860 | else | |
2861 | head = new_loc_descr (DW_OP_bregx, cfa->reg, cfa->base_offset); | |
2862 | } | |
2863 | else if (cfa->reg <= 31) | |
7d9d8943 | 2864 | head = new_loc_descr (DW_OP_reg0 + cfa->reg, 0, 0); |
f299afab HPN |
2865 | else |
2866 | head = new_loc_descr (DW_OP_regx, cfa->reg, 0); | |
7d9d8943 AM |
2867 | head->dw_loc_oprnd1.val_class = dw_val_class_const; |
2868 | tmp = new_loc_descr (DW_OP_deref, 0, 0); | |
2869 | add_loc_descr (&head, tmp); | |
2870 | if (cfa->offset != 0) | |
2871 | { | |
2872 | tmp = new_loc_descr (DW_OP_plus_uconst, cfa->offset, 0); | |
2873 | add_loc_descr (&head, tmp); | |
2874 | } | |
2875 | return head; | |
2876 | } | |
2877 | ||
556273e0 | 2878 | /* This function fills in aa dw_cfa_location structure from a |
7d9d8943 AM |
2879 | dwarf location descriptor sequence. */ |
2880 | ||
2881 | static void | |
2882 | get_cfa_from_loc_descr (cfa, loc) | |
2883 | dw_cfa_location *cfa; | |
556273e0 | 2884 | struct dw_loc_descr_struct *loc; |
7d9d8943 | 2885 | { |
556273e0 | 2886 | struct dw_loc_descr_struct *ptr; |
7d9d8943 AM |
2887 | cfa->offset = 0; |
2888 | cfa->base_offset = 0; | |
2889 | cfa->indirect = 0; | |
2890 | cfa->reg = -1; | |
2891 | ||
2892 | for (ptr = loc; ptr != NULL; ptr = ptr->dw_loc_next) | |
2893 | { | |
2894 | enum dwarf_location_atom op = ptr->dw_loc_opc; | |
2895 | switch (op) | |
556273e0 | 2896 | { |
7d9d8943 AM |
2897 | case DW_OP_reg0: |
2898 | case DW_OP_reg1: | |
2899 | case DW_OP_reg2: | |
2900 | case DW_OP_reg3: | |
2901 | case DW_OP_reg4: | |
2902 | case DW_OP_reg5: | |
2903 | case DW_OP_reg6: | |
2904 | case DW_OP_reg7: | |
2905 | case DW_OP_reg8: | |
2906 | case DW_OP_reg9: | |
2907 | case DW_OP_reg10: | |
2908 | case DW_OP_reg11: | |
2909 | case DW_OP_reg12: | |
2910 | case DW_OP_reg13: | |
2911 | case DW_OP_reg14: | |
2912 | case DW_OP_reg15: | |
2913 | case DW_OP_reg16: | |
2914 | case DW_OP_reg17: | |
2915 | case DW_OP_reg18: | |
2916 | case DW_OP_reg19: | |
2917 | case DW_OP_reg20: | |
2918 | case DW_OP_reg21: | |
2919 | case DW_OP_reg22: | |
2920 | case DW_OP_reg23: | |
2921 | case DW_OP_reg24: | |
2922 | case DW_OP_reg25: | |
2923 | case DW_OP_reg26: | |
2924 | case DW_OP_reg27: | |
2925 | case DW_OP_reg28: | |
2926 | case DW_OP_reg29: | |
2927 | case DW_OP_reg30: | |
2928 | case DW_OP_reg31: | |
2929 | cfa->reg = op - DW_OP_reg0; | |
2930 | break; | |
2931 | case DW_OP_regx: | |
2932 | cfa->reg = ptr->dw_loc_oprnd1.v.val_int; | |
2933 | break; | |
2934 | case DW_OP_breg0: | |
2935 | case DW_OP_breg1: | |
2936 | case DW_OP_breg2: | |
2937 | case DW_OP_breg3: | |
2938 | case DW_OP_breg4: | |
2939 | case DW_OP_breg5: | |
2940 | case DW_OP_breg6: | |
2941 | case DW_OP_breg7: | |
2942 | case DW_OP_breg8: | |
2943 | case DW_OP_breg9: | |
2944 | case DW_OP_breg10: | |
2945 | case DW_OP_breg11: | |
2946 | case DW_OP_breg12: | |
2947 | case DW_OP_breg13: | |
2948 | case DW_OP_breg14: | |
2949 | case DW_OP_breg15: | |
2950 | case DW_OP_breg16: | |
2951 | case DW_OP_breg17: | |
2952 | case DW_OP_breg18: | |
2953 | case DW_OP_breg19: | |
2954 | case DW_OP_breg20: | |
2955 | case DW_OP_breg21: | |
2956 | case DW_OP_breg22: | |
2957 | case DW_OP_breg23: | |
2958 | case DW_OP_breg24: | |
2959 | case DW_OP_breg25: | |
2960 | case DW_OP_breg26: | |
2961 | case DW_OP_breg27: | |
2962 | case DW_OP_breg28: | |
2963 | case DW_OP_breg29: | |
2964 | case DW_OP_breg30: | |
2965 | case DW_OP_breg31: | |
2966 | cfa->reg = op - DW_OP_breg0; | |
2967 | cfa->base_offset = ptr->dw_loc_oprnd1.v.val_int; | |
2968 | break; | |
2969 | case DW_OP_bregx: | |
2970 | cfa->reg = ptr->dw_loc_oprnd1.v.val_int; | |
2971 | cfa->base_offset = ptr->dw_loc_oprnd2.v.val_int; | |
2972 | break; | |
2973 | case DW_OP_deref: | |
2974 | cfa->indirect = 1; | |
2975 | break; | |
2976 | case DW_OP_plus_uconst: | |
556273e0 | 2977 | cfa->offset = ptr->dw_loc_oprnd1.v.val_unsigned; |
7d9d8943 AM |
2978 | break; |
2979 | default: | |
2980 | fatal ("DW_LOC_OP %s not implememnted yet.\n", | |
2981 | dwarf_stack_op_name (ptr->dw_loc_opc)); | |
2982 | } | |
2983 | } | |
2984 | } | |
2985 | #endif /* .debug_frame support */ | |
2986 | \f | |
2987 | /* And now, the support for symbolic debugging information. */ | |
2988 | #ifdef DWARF2_DEBUGGING_INFO | |
2989 | ||
2990 | /* NOTE: In the comments in this file, many references are made to | |
2991 | "Debugging Information Entries". This term is abbreviated as `DIE' | |
2992 | throughout the remainder of this file. */ | |
2993 | ||
2994 | /* An internal representation of the DWARF output is built, and then | |
2995 | walked to generate the DWARF debugging info. The walk of the internal | |
2996 | representation is done after the entire program has been compiled. | |
2997 | The types below are used to describe the internal representation. */ | |
2998 | ||
2999 | /* Various DIE's use offsets relative to the beginning of the | |
3000 | .debug_info section to refer to each other. */ | |
3001 | ||
3002 | typedef long int dw_offset; | |
3003 | ||
3004 | /* Define typedefs here to avoid circular dependencies. */ | |
3005 | ||
3006 | typedef struct dw_attr_struct *dw_attr_ref; | |
3007 | typedef struct dw_line_info_struct *dw_line_info_ref; | |
3008 | typedef struct dw_separate_line_info_struct *dw_separate_line_info_ref; | |
3009 | typedef struct pubname_struct *pubname_ref; | |
3010 | typedef dw_die_ref *arange_ref; | |
3011 | ||
3012 | /* Each entry in the line_info_table maintains the file and | |
3013 | line number associated with the label generated for that | |
3014 | entry. The label gives the PC value associated with | |
3015 | the line number entry. */ | |
3016 | ||
3017 | typedef struct dw_line_info_struct | |
3018 | { | |
3019 | unsigned long dw_file_num; | |
3020 | unsigned long dw_line_num; | |
3021 | } | |
3022 | dw_line_info_entry; | |
3023 | ||
3024 | /* Line information for functions in separate sections; each one gets its | |
3025 | own sequence. */ | |
3026 | typedef struct dw_separate_line_info_struct | |
3027 | { | |
3028 | unsigned long dw_file_num; | |
3029 | unsigned long dw_line_num; | |
3030 | unsigned long function; | |
3031 | } | |
3032 | dw_separate_line_info_entry; | |
3033 | ||
3034 | /* Each DIE attribute has a field specifying the attribute kind, | |
3035 | a link to the next attribute in the chain, and an attribute value. | |
3036 | Attributes are typically linked below the DIE they modify. */ | |
3037 | ||
3038 | typedef struct dw_attr_struct | |
3039 | { | |
3040 | enum dwarf_attribute dw_attr; | |
3041 | dw_attr_ref dw_attr_next; | |
3042 | dw_val_node dw_attr_val; | |
3043 | } | |
3044 | dw_attr_node; | |
3045 | ||
3046 | /* The Debugging Information Entry (DIE) structure */ | |
3047 | ||
3048 | typedef struct die_struct | |
3049 | { | |
3050 | enum dwarf_tag die_tag; | |
881c6935 | 3051 | char *die_symbol; |
7d9d8943 AM |
3052 | dw_attr_ref die_attr; |
3053 | dw_die_ref die_parent; | |
3054 | dw_die_ref die_child; | |
3055 | dw_die_ref die_sib; | |
3056 | dw_offset die_offset; | |
3057 | unsigned long die_abbrev; | |
1bfb5f8f | 3058 | int die_mark; |
7d9d8943 AM |
3059 | } |
3060 | die_node; | |
3061 | ||
3062 | /* The pubname structure */ | |
3063 | ||
3064 | typedef struct pubname_struct | |
3065 | { | |
3066 | dw_die_ref die; | |
556273e0 | 3067 | char *name; |
7d9d8943 AM |
3068 | } |
3069 | pubname_entry; | |
3070 | ||
3071 | /* The limbo die list structure. */ | |
3072 | typedef struct limbo_die_struct | |
3073 | { | |
3074 | dw_die_ref die; | |
3075 | struct limbo_die_struct *next; | |
3076 | } | |
3077 | limbo_die_node; | |
3078 | ||
3079 | /* How to start an assembler comment. */ | |
3080 | #ifndef ASM_COMMENT_START | |
3081 | #define ASM_COMMENT_START ";#" | |
3082 | #endif | |
3083 | ||
3084 | /* Define a macro which returns non-zero for a TYPE_DECL which was | |
3085 | implicitly generated for a tagged type. | |
3086 | ||
3087 | Note that unlike the gcc front end (which generates a NULL named | |
3088 | TYPE_DECL node for each complete tagged type, each array type, and | |
3089 | each function type node created) the g++ front end generates a | |
3090 | _named_ TYPE_DECL node for each tagged type node created. | |
3091 | These TYPE_DECLs have DECL_ARTIFICIAL set, so we know not to | |
3092 | generate a DW_TAG_typedef DIE for them. */ | |
3093 | ||
3094 | #define TYPE_DECL_IS_STUB(decl) \ | |
3095 | (DECL_NAME (decl) == NULL_TREE \ | |
3096 | || (DECL_ARTIFICIAL (decl) \ | |
3097 | && is_tagged_type (TREE_TYPE (decl)) \ | |
3098 | && ((decl == TYPE_STUB_DECL (TREE_TYPE (decl))) \ | |
3099 | /* This is necessary for stub decls that \ | |
3100 | appear in nested inline functions. */ \ | |
3101 | || (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE \ | |
3102 | && (decl_ultimate_origin (decl) \ | |
3103 | == TYPE_STUB_DECL (TREE_TYPE (decl))))))) | |
3104 | ||
3105 | /* Information concerning the compilation unit's programming | |
3106 | language, and compiler version. */ | |
3107 | ||
3108 | extern int flag_traditional; | |
3109 | ||
3110 | /* Fixed size portion of the DWARF compilation unit header. */ | |
3111 | #define DWARF_COMPILE_UNIT_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 3) | |
3112 | ||
3113 | /* Fixed size portion of debugging line information prolog. */ | |
3114 | #define DWARF_LINE_PROLOG_HEADER_SIZE 5 | |
3115 | ||
3116 | /* Fixed size portion of public names info. */ | |
3117 | #define DWARF_PUBNAMES_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2) | |
3118 | ||
3119 | /* Fixed size portion of the address range info. */ | |
3120 | #define DWARF_ARANGES_HEADER_SIZE \ | |
3121 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, DWARF2_ADDR_SIZE * 2) \ | |
3122 | - DWARF_OFFSET_SIZE) | |
3123 | ||
3124 | /* Size of padding portion in the address range info. It must be | |
3125 | aligned to twice the pointer size. */ | |
3126 | #define DWARF_ARANGES_PAD_SIZE \ | |
3127 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, DWARF2_ADDR_SIZE * 2) \ | |
3128 | - (2 * DWARF_OFFSET_SIZE + 4)) | |
3129 | ||
9d147085 | 3130 | /* Use assembler line directives if available. */ |
7d9d8943 | 3131 | #ifndef DWARF2_ASM_LINE_DEBUG_INFO |
9d147085 RH |
3132 | #ifdef HAVE_AS_DWARF2_DEBUG_LINE |
3133 | #define DWARF2_ASM_LINE_DEBUG_INFO 1 | |
3134 | #else | |
7d9d8943 AM |
3135 | #define DWARF2_ASM_LINE_DEBUG_INFO 0 |
3136 | #endif | |
9d147085 | 3137 | #endif |
7d9d8943 AM |
3138 | |
3139 | /* Define the architecture-dependent minimum instruction length (in bytes). | |
3140 | In this implementation of DWARF, this field is used for information | |
3141 | purposes only. Since GCC generates assembly language, we have | |
3142 | no a priori knowledge of how many instruction bytes are generated | |
3143 | for each source line, and therefore can use only the DW_LNE_set_address | |
3144 | and DW_LNS_fixed_advance_pc line information commands. */ | |
3145 | ||
3146 | #ifndef DWARF_LINE_MIN_INSTR_LENGTH | |
3147 | #define DWARF_LINE_MIN_INSTR_LENGTH 4 | |
3148 | #endif | |
3149 | ||
3150 | /* Minimum line offset in a special line info. opcode. | |
3151 | This value was chosen to give a reasonable range of values. */ | |
3152 | #define DWARF_LINE_BASE -10 | |
3153 | ||
3154 | /* First special line opcde - leave room for the standard opcodes. */ | |
3155 | #define DWARF_LINE_OPCODE_BASE 10 | |
3156 | ||
3157 | /* Range of line offsets in a special line info. opcode. */ | |
3158 | #define DWARF_LINE_RANGE (254-DWARF_LINE_OPCODE_BASE+1) | |
3159 | ||
3160 | /* Flag that indicates the initial value of the is_stmt_start flag. | |
3161 | In the present implementation, we do not mark any lines as | |
3162 | the beginning of a source statement, because that information | |
3163 | is not made available by the GCC front-end. */ | |
3164 | #define DWARF_LINE_DEFAULT_IS_STMT_START 1 | |
3165 | ||
3166 | /* This location is used by calc_die_sizes() to keep track | |
3167 | the offset of each DIE within the .debug_info section. */ | |
3168 | static unsigned long next_die_offset; | |
3169 | ||
3170 | /* Record the root of the DIE's built for the current compilation unit. */ | |
3171 | static dw_die_ref comp_unit_die; | |
3172 | ||
3173 | /* A list of DIEs with a NULL parent waiting to be relocated. */ | |
3174 | static limbo_die_node *limbo_die_list = 0; | |
3175 | ||
3176 | /* Pointer to an array of filenames referenced by this compilation unit. */ | |
3177 | static char **file_table; | |
3178 | ||
3179 | /* Total number of entries in the table (i.e. array) pointed to by | |
3180 | `file_table'. This is the *total* and includes both used and unused | |
3181 | slots. */ | |
3182 | static unsigned file_table_allocated; | |
3183 | ||
3184 | /* Number of entries in the file_table which are actually in use. */ | |
3185 | static unsigned file_table_in_use; | |
3186 | ||
3187 | /* Size (in elements) of increments by which we may expand the filename | |
3188 | table. */ | |
3189 | #define FILE_TABLE_INCREMENT 64 | |
3190 | ||
3191 | /* Local pointer to the name of the main input file. Initialized in | |
3192 | dwarf2out_init. */ | |
3193 | static const char *primary_filename; | |
3194 | ||
3195 | /* A pointer to the base of a table of references to DIE's that describe | |
3196 | declarations. The table is indexed by DECL_UID() which is a unique | |
3197 | number identifying each decl. */ | |
3198 | static dw_die_ref *decl_die_table; | |
3199 | ||
3200 | /* Number of elements currently allocated for the decl_die_table. */ | |
3201 | static unsigned decl_die_table_allocated; | |
3202 | ||
3203 | /* Number of elements in decl_die_table currently in use. */ | |
3204 | static unsigned decl_die_table_in_use; | |
3205 | ||
3206 | /* Size (in elements) of increments by which we may expand the | |
3207 | decl_die_table. */ | |
3208 | #define DECL_DIE_TABLE_INCREMENT 256 | |
3209 | ||
3210 | /* A pointer to the base of a table of references to declaration | |
3211 | scopes. This table is a display which tracks the nesting | |
3212 | of declaration scopes at the current scope and containing | |
3213 | scopes. This table is used to find the proper place to | |
3214 | define type declaration DIE's. */ | |
3215 | static tree *decl_scope_table; | |
3216 | ||
3217 | /* Number of elements currently allocated for the decl_scope_table. */ | |
3218 | static int decl_scope_table_allocated; | |
3219 | ||
3220 | /* Current level of nesting of declaration scopes. */ | |
3221 | static int decl_scope_depth; | |
3222 | ||
3223 | /* Size (in elements) of increments by which we may expand the | |
3224 | decl_scope_table. */ | |
3225 | #define DECL_SCOPE_TABLE_INCREMENT 64 | |
3226 | ||
3227 | /* A pointer to the base of a list of references to DIE's that | |
3228 | are uniquely identified by their tag, presence/absence of | |
3229 | children DIE's, and list of attribute/value pairs. */ | |
3230 | static dw_die_ref *abbrev_die_table; | |
3231 | ||
3232 | /* Number of elements currently allocated for abbrev_die_table. */ | |
3233 | static unsigned abbrev_die_table_allocated; | |
3234 | ||
3235 | /* Number of elements in type_die_table currently in use. */ | |
3236 | static unsigned abbrev_die_table_in_use; | |
3237 | ||
3238 | /* Size (in elements) of increments by which we may expand the | |
3239 | abbrev_die_table. */ | |
3240 | #define ABBREV_DIE_TABLE_INCREMENT 256 | |
3241 | ||
3242 | /* A pointer to the base of a table that contains line information | |
3243 | for each source code line in .text in the compilation unit. */ | |
3244 | static dw_line_info_ref line_info_table; | |
3245 | ||
3246 | /* Number of elements currently allocated for line_info_table. */ | |
3247 | static unsigned line_info_table_allocated; | |
3248 | ||
3249 | /* Number of elements in separate_line_info_table currently in use. */ | |
3250 | static unsigned separate_line_info_table_in_use; | |
3251 | ||
3252 | /* A pointer to the base of a table that contains line information | |
3253 | for each source code line outside of .text in the compilation unit. */ | |
3254 | static dw_separate_line_info_ref separate_line_info_table; | |
3255 | ||
3256 | /* Number of elements currently allocated for separate_line_info_table. */ | |
3257 | static unsigned separate_line_info_table_allocated; | |
3258 | ||
3259 | /* Number of elements in line_info_table currently in use. */ | |
3260 | static unsigned line_info_table_in_use; | |
3261 | ||
3262 | /* Size (in elements) of increments by which we may expand the | |
3263 | line_info_table. */ | |
3264 | #define LINE_INFO_TABLE_INCREMENT 1024 | |
3265 | ||
3266 | /* A pointer to the base of a table that contains a list of publicly | |
3267 | accessible names. */ | |
3268 | static pubname_ref pubname_table; | |
3269 | ||
3270 | /* Number of elements currently allocated for pubname_table. */ | |
3271 | static unsigned pubname_table_allocated; | |
3272 | ||
3273 | /* Number of elements in pubname_table currently in use. */ | |
3274 | static unsigned pubname_table_in_use; | |
3275 | ||
3276 | /* Size (in elements) of increments by which we may expand the | |
3277 | pubname_table. */ | |
3278 | #define PUBNAME_TABLE_INCREMENT 64 | |
3279 | ||
3280 | /* A pointer to the base of a table that contains a list of publicly | |
3281 | accessible names. */ | |
3282 | static arange_ref arange_table; | |
3283 | ||
3284 | /* Number of elements currently allocated for arange_table. */ | |
3285 | static unsigned arange_table_allocated; | |
3286 | ||
3287 | /* Number of elements in arange_table currently in use. */ | |
3288 | static unsigned arange_table_in_use; | |
3289 | ||
3290 | /* Size (in elements) of increments by which we may expand the | |
3291 | arange_table. */ | |
3292 | #define ARANGE_TABLE_INCREMENT 64 | |
3293 | ||
3294 | /* A pointer to the base of a list of incomplete types which might be | |
3295 | completed at some later time. */ | |
3296 | ||
3297 | static tree *incomplete_types_list; | |
3298 | ||
3299 | /* Number of elements currently allocated for the incomplete_types_list. */ | |
3300 | static unsigned incomplete_types_allocated; | |
3301 | ||
3302 | /* Number of elements of incomplete_types_list currently in use. */ | |
3303 | static unsigned incomplete_types; | |
3304 | ||
3305 | /* Size (in elements) of increments by which we may expand the incomplete | |
3306 | types list. Actually, a single hunk of space of this size should | |
3307 | be enough for most typical programs. */ | |
3308 | #define INCOMPLETE_TYPES_INCREMENT 64 | |
3309 | ||
3310 | /* Record whether the function being analyzed contains inlined functions. */ | |
3311 | static int current_function_has_inlines; | |
3312 | #if 0 && defined (MIPS_DEBUGGING_INFO) | |
3313 | static int comp_unit_has_inlines; | |
3314 | #endif | |
3315 | ||
3316 | /* Array of RTXes referenced by the debugging information, which therefore | |
3317 | must be kept around forever. We do this rather than perform GC on | |
3318 | the dwarf info because almost all of the dwarf info lives forever, and | |
3319 | it's easier to support non-GC frontends this way. */ | |
3320 | static varray_type used_rtx_varray; | |
3321 | ||
3322 | /* Forward declarations for functions defined in this file. */ | |
3323 | ||
3324 | static int is_pseudo_reg PARAMS ((rtx)); | |
3325 | static tree type_main_variant PARAMS ((tree)); | |
3326 | static int is_tagged_type PARAMS ((tree)); | |
3327 | static const char *dwarf_tag_name PARAMS ((unsigned)); | |
3328 | static const char *dwarf_attr_name PARAMS ((unsigned)); | |
3329 | static const char *dwarf_form_name PARAMS ((unsigned)); | |
3330 | #if 0 | |
3331 | static const char *dwarf_type_encoding_name PARAMS ((unsigned)); | |
3332 | #endif | |
3333 | static tree decl_ultimate_origin PARAMS ((tree)); | |
3334 | static tree block_ultimate_origin PARAMS ((tree)); | |
3335 | static tree decl_class_context PARAMS ((tree)); | |
3336 | static void add_dwarf_attr PARAMS ((dw_die_ref, dw_attr_ref)); | |
3337 | static void add_AT_flag PARAMS ((dw_die_ref, | |
3338 | enum dwarf_attribute, | |
3339 | unsigned)); | |
3340 | static void add_AT_int PARAMS ((dw_die_ref, | |
3341 | enum dwarf_attribute, long)); | |
3342 | static void add_AT_unsigned PARAMS ((dw_die_ref, | |
3343 | enum dwarf_attribute, | |
3344 | unsigned long)); | |
3345 | static void add_AT_long_long PARAMS ((dw_die_ref, | |
3346 | enum dwarf_attribute, | |
3347 | unsigned long, | |
3348 | unsigned long)); | |
3349 | static void add_AT_float PARAMS ((dw_die_ref, | |
3350 | enum dwarf_attribute, | |
3351 | unsigned, long *)); | |
3352 | static void add_AT_string PARAMS ((dw_die_ref, | |
3353 | enum dwarf_attribute, | |
3354 | const char *)); | |
3355 | static void add_AT_die_ref PARAMS ((dw_die_ref, | |
3356 | enum dwarf_attribute, | |
3357 | dw_die_ref)); | |
3358 | static void add_AT_fde_ref PARAMS ((dw_die_ref, | |
3359 | enum dwarf_attribute, | |
3360 | unsigned)); | |
3361 | static void add_AT_loc PARAMS ((dw_die_ref, | |
3362 | enum dwarf_attribute, | |
3363 | dw_loc_descr_ref)); | |
3364 | static void add_AT_addr PARAMS ((dw_die_ref, | |
3365 | enum dwarf_attribute, | |
3366 | rtx)); | |
3367 | static void add_AT_lbl_id PARAMS ((dw_die_ref, | |
3368 | enum dwarf_attribute, | |
3369 | const char *)); | |
3370 | static void add_AT_lbl_offset PARAMS ((dw_die_ref, | |
3371 | enum dwarf_attribute, | |
3372 | const char *)); | |
3373 | static dw_attr_ref get_AT PARAMS ((dw_die_ref, | |
3374 | enum dwarf_attribute)); | |
3375 | static const char *get_AT_low_pc PARAMS ((dw_die_ref)); | |
3376 | static const char *get_AT_hi_pc PARAMS ((dw_die_ref)); | |
3377 | static const char *get_AT_string PARAMS ((dw_die_ref, | |
3378 | enum dwarf_attribute)); | |
3379 | static int get_AT_flag PARAMS ((dw_die_ref, | |
3380 | enum dwarf_attribute)); | |
3381 | static unsigned get_AT_unsigned PARAMS ((dw_die_ref, | |
3382 | enum dwarf_attribute)); | |
3383 | static inline dw_die_ref get_AT_ref PARAMS ((dw_die_ref, | |
3384 | enum dwarf_attribute)); | |
3385 | static int is_c_family PARAMS ((void)); | |
28985b81 | 3386 | static int is_java PARAMS ((void)); |
7d9d8943 AM |
3387 | static int is_fortran PARAMS ((void)); |
3388 | static void remove_AT PARAMS ((dw_die_ref, | |
3389 | enum dwarf_attribute)); | |
3390 | static void remove_children PARAMS ((dw_die_ref)); | |
3391 | static void add_child_die PARAMS ((dw_die_ref, dw_die_ref)); | |
3392 | static dw_die_ref new_die PARAMS ((enum dwarf_tag, dw_die_ref)); | |
3393 | static dw_die_ref lookup_type_die PARAMS ((tree)); | |
3394 | static void equate_type_number_to_die PARAMS ((tree, dw_die_ref)); | |
3395 | static dw_die_ref lookup_decl_die PARAMS ((tree)); | |
3396 | static void equate_decl_number_to_die PARAMS ((tree, dw_die_ref)); | |
3397 | static void print_spaces PARAMS ((FILE *)); | |
3398 | static void print_die PARAMS ((dw_die_ref, FILE *)); | |
3399 | static void print_dwarf_line_table PARAMS ((FILE *)); | |
881c6935 JM |
3400 | static void reverse_die_lists PARAMS ((dw_die_ref)); |
3401 | static void reverse_all_dies PARAMS ((dw_die_ref)); | |
3402 | static dw_die_ref push_new_compile_unit PARAMS ((dw_die_ref, dw_die_ref)); | |
3403 | static dw_die_ref pop_compile_unit PARAMS ((dw_die_ref)); | |
3404 | static void loc_checksum PARAMS ((dw_loc_descr_ref, struct md5_ctx *)); | |
3405 | static void attr_checksum PARAMS ((dw_attr_ref, struct md5_ctx *)); | |
3406 | static void die_checksum PARAMS ((dw_die_ref, struct md5_ctx *)); | |
3407 | static void compute_section_prefix PARAMS ((dw_die_ref)); | |
3408 | static int is_type_die PARAMS ((dw_die_ref)); | |
3409 | static int is_comdat_die PARAMS ((dw_die_ref)); | |
3410 | static int is_symbol_die PARAMS ((dw_die_ref)); | |
3411 | static char *gen_internal_sym PARAMS ((void)); | |
3412 | static void assign_symbol_names PARAMS ((dw_die_ref)); | |
3413 | static void break_out_includes PARAMS ((dw_die_ref)); | |
7d9d8943 AM |
3414 | static void add_sibling_attributes PARAMS ((dw_die_ref)); |
3415 | static void build_abbrev_table PARAMS ((dw_die_ref)); | |
3416 | static unsigned long size_of_string PARAMS ((const char *)); | |
3417 | static int constant_size PARAMS ((long unsigned)); | |
3418 | static unsigned long size_of_die PARAMS ((dw_die_ref)); | |
3419 | static void calc_die_sizes PARAMS ((dw_die_ref)); | |
1bfb5f8f JM |
3420 | static void mark_dies PARAMS ((dw_die_ref)); |
3421 | static void unmark_dies PARAMS ((dw_die_ref)); | |
7d9d8943 AM |
3422 | static unsigned long size_of_line_prolog PARAMS ((void)); |
3423 | static unsigned long size_of_pubnames PARAMS ((void)); | |
3424 | static unsigned long size_of_aranges PARAMS ((void)); | |
3425 | static enum dwarf_form value_format PARAMS ((dw_attr_ref)); | |
3426 | static void output_value_format PARAMS ((dw_attr_ref)); | |
3427 | static void output_abbrev_section PARAMS ((void)); | |
881c6935 JM |
3428 | static void output_die_symbol PARAMS ((dw_die_ref)); |
3429 | static void output_symbolic_ref PARAMS ((dw_die_ref)); | |
7d9d8943 AM |
3430 | static void output_die PARAMS ((dw_die_ref)); |
3431 | static void output_compilation_unit_header PARAMS ((void)); | |
881c6935 | 3432 | static void output_comp_unit PARAMS ((dw_die_ref)); |
7d9d8943 AM |
3433 | static const char *dwarf2_name PARAMS ((tree, int)); |
3434 | static void add_pubname PARAMS ((tree, dw_die_ref)); | |
3435 | static void output_pubnames PARAMS ((void)); | |
3436 | static void add_arange PARAMS ((tree, dw_die_ref)); | |
3437 | static void output_aranges PARAMS ((void)); | |
3438 | static void output_line_info PARAMS ((void)); | |
3439 | static dw_die_ref base_type_die PARAMS ((tree)); | |
3440 | static tree root_type PARAMS ((tree)); | |
3441 | static int is_base_type PARAMS ((tree)); | |
3442 | static dw_die_ref modified_type_die PARAMS ((tree, int, int, dw_die_ref)); | |
3443 | static int type_is_enum PARAMS ((tree)); | |
3444 | static unsigned int reg_number PARAMS ((rtx)); | |
3445 | static dw_loc_descr_ref reg_loc_descriptor PARAMS ((rtx)); | |
d8041cc8 | 3446 | static dw_loc_descr_ref int_loc_descriptor PARAMS ((HOST_WIDE_INT)); |
7d9d8943 AM |
3447 | static dw_loc_descr_ref based_loc_descr PARAMS ((unsigned, long)); |
3448 | static int is_based_loc PARAMS ((rtx)); | |
3449 | static dw_loc_descr_ref mem_loc_descriptor PARAMS ((rtx, enum machine_mode mode)); | |
3450 | static dw_loc_descr_ref concat_loc_descriptor PARAMS ((rtx, rtx)); | |
3451 | static dw_loc_descr_ref loc_descriptor PARAMS ((rtx)); | |
d8041cc8 | 3452 | static dw_loc_descr_ref loc_descriptor_from_tree PARAMS ((tree, int)); |
7d9d8943 AM |
3453 | static HOST_WIDE_INT ceiling PARAMS ((HOST_WIDE_INT, unsigned int)); |
3454 | static tree field_type PARAMS ((tree)); | |
3455 | static unsigned int simple_type_align_in_bits PARAMS ((tree)); | |
3456 | static unsigned HOST_WIDE_INT simple_type_size_in_bits PARAMS ((tree)); | |
3457 | static HOST_WIDE_INT field_byte_offset PARAMS ((tree)); | |
3458 | static void add_AT_location_description PARAMS ((dw_die_ref, | |
3459 | enum dwarf_attribute, rtx)); | |
3460 | static void add_data_member_location_attribute PARAMS ((dw_die_ref, tree)); | |
3461 | static void add_const_value_attribute PARAMS ((dw_die_ref, rtx)); | |
d8041cc8 | 3462 | static rtx rtl_for_decl_location PARAMS ((tree)); |
7d9d8943 | 3463 | static void add_location_or_const_value_attribute PARAMS ((dw_die_ref, tree)); |
1bfb5f8f | 3464 | static void tree_add_const_value_attribute PARAMS ((dw_die_ref, tree)); |
7d9d8943 AM |
3465 | static void add_name_attribute PARAMS ((dw_die_ref, const char *)); |
3466 | static void add_bound_info PARAMS ((dw_die_ref, | |
3467 | enum dwarf_attribute, tree)); | |
3468 | static void add_subscript_info PARAMS ((dw_die_ref, tree)); | |
3469 | static void add_byte_size_attribute PARAMS ((dw_die_ref, tree)); | |
3470 | static void add_bit_offset_attribute PARAMS ((dw_die_ref, tree)); | |
3471 | static void add_bit_size_attribute PARAMS ((dw_die_ref, tree)); | |
3472 | static void add_prototyped_attribute PARAMS ((dw_die_ref, tree)); | |
3473 | static void add_abstract_origin_attribute PARAMS ((dw_die_ref, tree)); | |
3474 | static void add_pure_or_virtual_attribute PARAMS ((dw_die_ref, tree)); | |
3475 | static void add_src_coords_attributes PARAMS ((dw_die_ref, tree)); | |
3476 | static void add_name_and_src_coords_attributes PARAMS ((dw_die_ref, tree)); | |
3477 | static void push_decl_scope PARAMS ((tree)); | |
3478 | static dw_die_ref scope_die_for PARAMS ((tree, dw_die_ref)); | |
3479 | static void pop_decl_scope PARAMS ((void)); | |
3480 | static void add_type_attribute PARAMS ((dw_die_ref, tree, int, int, | |
3481 | dw_die_ref)); | |
3482 | static const char *type_tag PARAMS ((tree)); | |
3483 | static tree member_declared_type PARAMS ((tree)); | |
3484 | #if 0 | |
3485 | static const char *decl_start_label PARAMS ((tree)); | |
3486 | #endif | |
3487 | static void gen_array_type_die PARAMS ((tree, dw_die_ref)); | |
3488 | static void gen_set_type_die PARAMS ((tree, dw_die_ref)); | |
3489 | #if 0 | |
3490 | static void gen_entry_point_die PARAMS ((tree, dw_die_ref)); | |
3491 | #endif | |
3492 | static void gen_inlined_enumeration_type_die PARAMS ((tree, dw_die_ref)); | |
3493 | static void gen_inlined_structure_type_die PARAMS ((tree, dw_die_ref)); | |
3494 | static void gen_inlined_union_type_die PARAMS ((tree, dw_die_ref)); | |
3495 | static void gen_enumeration_type_die PARAMS ((tree, dw_die_ref)); | |
3496 | static dw_die_ref gen_formal_parameter_die PARAMS ((tree, dw_die_ref)); | |
3497 | static void gen_unspecified_parameters_die PARAMS ((tree, dw_die_ref)); | |
3498 | static void gen_formal_types_die PARAMS ((tree, dw_die_ref)); | |
3499 | static void gen_subprogram_die PARAMS ((tree, dw_die_ref)); | |
3500 | static void gen_variable_die PARAMS ((tree, dw_die_ref)); | |
3501 | static void gen_label_die PARAMS ((tree, dw_die_ref)); | |
3502 | static void gen_lexical_block_die PARAMS ((tree, dw_die_ref, int)); | |
3503 | static void gen_inlined_subroutine_die PARAMS ((tree, dw_die_ref, int)); | |
3504 | static void gen_field_die PARAMS ((tree, dw_die_ref)); | |
3505 | static void gen_ptr_to_mbr_type_die PARAMS ((tree, dw_die_ref)); | |
3506 | static dw_die_ref gen_compile_unit_die PARAMS ((const char *)); | |
3507 | static void gen_string_type_die PARAMS ((tree, dw_die_ref)); | |
3508 | static void gen_inheritance_die PARAMS ((tree, dw_die_ref)); | |
3509 | static void gen_member_die PARAMS ((tree, dw_die_ref)); | |
3510 | static void gen_struct_or_union_type_die PARAMS ((tree, dw_die_ref)); | |
3511 | static void gen_subroutine_type_die PARAMS ((tree, dw_die_ref)); | |
3512 | static void gen_typedef_die PARAMS ((tree, dw_die_ref)); | |
3513 | static void gen_type_die PARAMS ((tree, dw_die_ref)); | |
3514 | static void gen_tagged_type_instantiation_die PARAMS ((tree, dw_die_ref)); | |
3515 | static void gen_block_die PARAMS ((tree, dw_die_ref, int)); | |
3516 | static void decls_for_scope PARAMS ((tree, dw_die_ref, int)); | |
3517 | static int is_redundant_typedef PARAMS ((tree)); | |
3518 | static void gen_decl_die PARAMS ((tree, dw_die_ref)); | |
3519 | static unsigned lookup_filename PARAMS ((const char *)); | |
3520 | static void add_incomplete_type PARAMS ((tree)); | |
3521 | static void retry_incomplete_types PARAMS ((void)); | |
3522 | static void gen_type_die_for_member PARAMS ((tree, tree, dw_die_ref)); | |
3523 | static void gen_abstract_function PARAMS ((tree)); | |
3524 | static rtx save_rtx PARAMS ((rtx)); | |
3525 | static void splice_child_die PARAMS ((dw_die_ref, dw_die_ref)); | |
7d9d8943 AM |
3526 | |
3527 | /* Section names used to hold DWARF debugging information. */ | |
3528 | #ifndef DEBUG_INFO_SECTION | |
3529 | #define DEBUG_INFO_SECTION ".debug_info" | |
3530 | #endif | |
3531 | #ifndef ABBREV_SECTION | |
3532 | #define ABBREV_SECTION ".debug_abbrev" | |
3533 | #endif | |
3534 | #ifndef ARANGES_SECTION | |
3535 | #define ARANGES_SECTION ".debug_aranges" | |
3536 | #endif | |
3537 | #ifndef DW_MACINFO_SECTION | |
3538 | #define DW_MACINFO_SECTION ".debug_macinfo" | |
3539 | #endif | |
3540 | #ifndef DEBUG_LINE_SECTION | |
3541 | #define DEBUG_LINE_SECTION ".debug_line" | |
3542 | #endif | |
3543 | #ifndef LOC_SECTION | |
3544 | #define LOC_SECTION ".debug_loc" | |
3545 | #endif | |
3546 | #ifndef PUBNAMES_SECTION | |
3547 | #define PUBNAMES_SECTION ".debug_pubnames" | |
3548 | #endif | |
3549 | #ifndef STR_SECTION | |
3550 | #define STR_SECTION ".debug_str" | |
3551 | #endif | |
3552 | ||
3553 | /* Standard ELF section names for compiled code and data. */ | |
3554 | #ifndef TEXT_SECTION | |
3555 | #define TEXT_SECTION ".text" | |
3556 | #endif | |
3557 | #ifndef DATA_SECTION | |
3558 | #define DATA_SECTION ".data" | |
3559 | #endif | |
3560 | #ifndef BSS_SECTION | |
3561 | #define BSS_SECTION ".bss" | |
3562 | #endif | |
3563 | ||
3564 | /* Labels we insert at beginning sections we can reference instead of | |
556273e0 | 3565 | the section names themselves. */ |
7d9d8943 AM |
3566 | |
3567 | #ifndef TEXT_SECTION_LABEL | |
3568 | #define TEXT_SECTION_LABEL "Ltext" | |
3569 | #endif | |
3570 | #ifndef DEBUG_LINE_SECTION_LABEL | |
3571 | #define DEBUG_LINE_SECTION_LABEL "Ldebug_line" | |
3572 | #endif | |
3573 | #ifndef DEBUG_INFO_SECTION_LABEL | |
3574 | #define DEBUG_INFO_SECTION_LABEL "Ldebug_info" | |
3575 | #endif | |
3576 | #ifndef ABBREV_SECTION_LABEL | |
3577 | #define ABBREV_SECTION_LABEL "Ldebug_abbrev" | |
3578 | #endif | |
3579 | ||
7d9d8943 AM |
3580 | /* Definitions of defaults for formats and names of various special |
3581 | (artificial) labels which may be generated within this file (when the -g | |
3582 | options is used and DWARF_DEBUGGING_INFO is in effect. | |
3583 | If necessary, these may be overridden from within the tm.h file, but | |
3584 | typically, overriding these defaults is unnecessary. */ | |
3585 | ||
3586 | static char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3587 | static char text_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3588 | static char abbrev_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3589 | static char debug_info_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3590 | static char debug_line_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
3591 | ||
3592 | #ifndef TEXT_END_LABEL | |
3593 | #define TEXT_END_LABEL "Letext" | |
3594 | #endif | |
3595 | #ifndef DATA_END_LABEL | |
3596 | #define DATA_END_LABEL "Ledata" | |
3597 | #endif | |
3598 | #ifndef BSS_END_LABEL | |
3599 | #define BSS_END_LABEL "Lebss" | |
3600 | #endif | |
7d9d8943 AM |
3601 | #ifndef BLOCK_BEGIN_LABEL |
3602 | #define BLOCK_BEGIN_LABEL "LBB" | |
3603 | #endif | |
3604 | #ifndef BLOCK_END_LABEL | |
3605 | #define BLOCK_END_LABEL "LBE" | |
3606 | #endif | |
3607 | #ifndef BODY_BEGIN_LABEL | |
3608 | #define BODY_BEGIN_LABEL "Lbb" | |
3609 | #endif | |
3610 | #ifndef BODY_END_LABEL | |
3611 | #define BODY_END_LABEL "Lbe" | |
3612 | #endif | |
3613 | #ifndef LINE_CODE_LABEL | |
3614 | #define LINE_CODE_LABEL "LM" | |
3615 | #endif | |
3616 | #ifndef SEPARATE_LINE_CODE_LABEL | |
3617 | #define SEPARATE_LINE_CODE_LABEL "LSM" | |
3618 | #endif | |
3619 | \f | |
3620 | /* We allow a language front-end to designate a function that is to be | |
3621 | called to "demangle" any name before it it put into a DIE. */ | |
3622 | ||
3623 | static const char *(*demangle_name_func) PARAMS ((const char *)); | |
3624 | ||
3625 | void | |
3626 | dwarf2out_set_demangle_name_func (func) | |
3627 | const char *(*func) PARAMS ((const char *)); | |
3628 | { | |
3629 | demangle_name_func = func; | |
3630 | } | |
3631 | \f | |
3632 | /* Return an rtx like ORIG which lives forever. If we're doing GC, | |
3633 | that means adding it to used_rtx_varray. If not, that means making | |
3634 | a copy on the permanent_obstack. */ | |
3635 | ||
3636 | static rtx | |
3637 | save_rtx (orig) | |
3638 | register rtx orig; | |
3639 | { | |
1f8f4a0b | 3640 | VARRAY_PUSH_RTX (used_rtx_varray, orig); |
7d9d8943 AM |
3641 | |
3642 | return orig; | |
3643 | } | |
3644 | ||
3645 | /* Test if rtl node points to a pseudo register. */ | |
3646 | ||
3647 | static inline int | |
3648 | is_pseudo_reg (rtl) | |
3649 | register rtx rtl; | |
3650 | { | |
3651 | return ((GET_CODE (rtl) == REG && REGNO (rtl) >= FIRST_PSEUDO_REGISTER) | |
3652 | || (GET_CODE (rtl) == SUBREG | |
3653 | && REGNO (XEXP (rtl, 0)) >= FIRST_PSEUDO_REGISTER)); | |
3654 | } | |
3655 | ||
3656 | /* Return a reference to a type, with its const and volatile qualifiers | |
3657 | removed. */ | |
3658 | ||
3659 | static inline tree | |
3660 | type_main_variant (type) | |
3661 | register tree type; | |
3662 | { | |
3663 | type = TYPE_MAIN_VARIANT (type); | |
3664 | ||
556273e0 | 3665 | /* There really should be only one main variant among any group of variants |
7d9d8943 AM |
3666 | of a given type (and all of the MAIN_VARIANT values for all members of |
3667 | the group should point to that one type) but sometimes the C front-end | |
3668 | messes this up for array types, so we work around that bug here. */ | |
3669 | ||
3670 | if (TREE_CODE (type) == ARRAY_TYPE) | |
3671 | while (type != TYPE_MAIN_VARIANT (type)) | |
3672 | type = TYPE_MAIN_VARIANT (type); | |
3673 | ||
3674 | return type; | |
3675 | } | |
3676 | ||
3677 | /* Return non-zero if the given type node represents a tagged type. */ | |
3678 | ||
3679 | static inline int | |
3680 | is_tagged_type (type) | |
3681 | register tree type; | |
3682 | { | |
3683 | register enum tree_code code = TREE_CODE (type); | |
3684 | ||
3685 | return (code == RECORD_TYPE || code == UNION_TYPE | |
3686 | || code == QUAL_UNION_TYPE || code == ENUMERAL_TYPE); | |
3687 | } | |
3688 | ||
3689 | /* Convert a DIE tag into its string name. */ | |
3690 | ||
3691 | static const char * | |
3692 | dwarf_tag_name (tag) | |
3693 | register unsigned tag; | |
3694 | { | |
3695 | switch (tag) | |
3696 | { | |
3697 | case DW_TAG_padding: | |
3698 | return "DW_TAG_padding"; | |
3699 | case DW_TAG_array_type: | |
3700 | return "DW_TAG_array_type"; | |
3701 | case DW_TAG_class_type: | |
3702 | return "DW_TAG_class_type"; | |
3703 | case DW_TAG_entry_point: | |
3704 | return "DW_TAG_entry_point"; | |
3705 | case DW_TAG_enumeration_type: | |
3706 | return "DW_TAG_enumeration_type"; | |
3707 | case DW_TAG_formal_parameter: | |
3708 | return "DW_TAG_formal_parameter"; | |
3709 | case DW_TAG_imported_declaration: | |
3710 | return "DW_TAG_imported_declaration"; | |
3711 | case DW_TAG_label: | |
3712 | return "DW_TAG_label"; | |
3713 | case DW_TAG_lexical_block: | |
3714 | return "DW_TAG_lexical_block"; | |
3715 | case DW_TAG_member: | |
3716 | return "DW_TAG_member"; | |
3717 | case DW_TAG_pointer_type: | |
3718 | return "DW_TAG_pointer_type"; | |
3719 | case DW_TAG_reference_type: | |
3720 | return "DW_TAG_reference_type"; | |
3721 | case DW_TAG_compile_unit: | |
3722 | return "DW_TAG_compile_unit"; | |
3723 | case DW_TAG_string_type: | |
3724 | return "DW_TAG_string_type"; | |
3725 | case DW_TAG_structure_type: | |
3726 | return "DW_TAG_structure_type"; | |
3727 | case DW_TAG_subroutine_type: | |
3728 | return "DW_TAG_subroutine_type"; | |
3729 | case DW_TAG_typedef: | |
3730 | return "DW_TAG_typedef"; | |
3731 | case DW_TAG_union_type: | |
3732 | return "DW_TAG_union_type"; | |
3733 | case DW_TAG_unspecified_parameters: | |
3734 | return "DW_TAG_unspecified_parameters"; | |
3735 | case DW_TAG_variant: | |
3736 | return "DW_TAG_variant"; | |
3737 | case DW_TAG_common_block: | |
3738 | return "DW_TAG_common_block"; | |
3739 | case DW_TAG_common_inclusion: | |
3740 | return "DW_TAG_common_inclusion"; | |
3741 | case DW_TAG_inheritance: | |
3742 | return "DW_TAG_inheritance"; | |
3743 | case DW_TAG_inlined_subroutine: | |
3744 | return "DW_TAG_inlined_subroutine"; | |
3745 | case DW_TAG_module: | |
3746 | return "DW_TAG_module"; | |
3747 | case DW_TAG_ptr_to_member_type: | |
3748 | return "DW_TAG_ptr_to_member_type"; | |
3749 | case DW_TAG_set_type: | |
3750 | return "DW_TAG_set_type"; | |
3751 | case DW_TAG_subrange_type: | |
3752 | return "DW_TAG_subrange_type"; | |
3753 | case DW_TAG_with_stmt: | |
3754 | return "DW_TAG_with_stmt"; | |
3755 | case DW_TAG_access_declaration: | |
3756 | return "DW_TAG_access_declaration"; | |
3757 | case DW_TAG_base_type: | |
3758 | return "DW_TAG_base_type"; | |
3759 | case DW_TAG_catch_block: | |
3760 | return "DW_TAG_catch_block"; | |
3761 | case DW_TAG_const_type: | |
3762 | return "DW_TAG_const_type"; | |
3763 | case DW_TAG_constant: | |
3764 | return "DW_TAG_constant"; | |
3765 | case DW_TAG_enumerator: | |
3766 | return "DW_TAG_enumerator"; | |
3767 | case DW_TAG_file_type: | |
3768 | return "DW_TAG_file_type"; | |
3769 | case DW_TAG_friend: | |
3770 | return "DW_TAG_friend"; | |
3771 | case DW_TAG_namelist: | |
3772 | return "DW_TAG_namelist"; | |
3773 | case DW_TAG_namelist_item: | |
3774 | return "DW_TAG_namelist_item"; | |
3775 | case DW_TAG_packed_type: | |
3776 | return "DW_TAG_packed_type"; | |
3777 | case DW_TAG_subprogram: | |
3778 | return "DW_TAG_subprogram"; | |
3779 | case DW_TAG_template_type_param: | |
3780 | return "DW_TAG_template_type_param"; | |
3781 | case DW_TAG_template_value_param: | |
3782 | return "DW_TAG_template_value_param"; | |
3783 | case DW_TAG_thrown_type: | |
3784 | return "DW_TAG_thrown_type"; | |
3785 | case DW_TAG_try_block: | |
3786 | return "DW_TAG_try_block"; | |
3787 | case DW_TAG_variant_part: | |
3788 | return "DW_TAG_variant_part"; | |
3789 | case DW_TAG_variable: | |
3790 | return "DW_TAG_variable"; | |
3791 | case DW_TAG_volatile_type: | |
3792 | return "DW_TAG_volatile_type"; | |
3793 | case DW_TAG_MIPS_loop: | |
3794 | return "DW_TAG_MIPS_loop"; | |
3795 | case DW_TAG_format_label: | |
3796 | return "DW_TAG_format_label"; | |
3797 | case DW_TAG_function_template: | |
3798 | return "DW_TAG_function_template"; | |
3799 | case DW_TAG_class_template: | |
3800 | return "DW_TAG_class_template"; | |
881c6935 JM |
3801 | case DW_TAG_GNU_BINCL: |
3802 | return "DW_TAG_GNU_BINCL"; | |
3803 | case DW_TAG_GNU_EINCL: | |
3804 | return "DW_TAG_GNU_EINCL"; | |
7d9d8943 AM |
3805 | default: |
3806 | return "DW_TAG_<unknown>"; | |
3807 | } | |
3808 | } | |
3809 | ||
3810 | /* Convert a DWARF attribute code into its string name. */ | |
3811 | ||
3812 | static const char * | |
3813 | dwarf_attr_name (attr) | |
3814 | register unsigned attr; | |
3815 | { | |
3816 | switch (attr) | |
3817 | { | |
3818 | case DW_AT_sibling: | |
3819 | return "DW_AT_sibling"; | |
3820 | case DW_AT_location: | |
3821 | return "DW_AT_location"; | |
3822 | case DW_AT_name: | |
3823 | return "DW_AT_name"; | |
3824 | case DW_AT_ordering: | |
3825 | return "DW_AT_ordering"; | |
3826 | case DW_AT_subscr_data: | |
3827 | return "DW_AT_subscr_data"; | |
3828 | case DW_AT_byte_size: | |
3829 | return "DW_AT_byte_size"; | |
3830 | case DW_AT_bit_offset: | |
3831 | return "DW_AT_bit_offset"; | |
3832 | case DW_AT_bit_size: | |
3833 | return "DW_AT_bit_size"; | |
3834 | case DW_AT_element_list: | |
3835 | return "DW_AT_element_list"; | |
3836 | case DW_AT_stmt_list: | |
3837 | return "DW_AT_stmt_list"; | |
3838 | case DW_AT_low_pc: | |
3839 | return "DW_AT_low_pc"; | |
3840 | case DW_AT_high_pc: | |
3841 | return "DW_AT_high_pc"; | |
3842 | case DW_AT_language: | |
3843 | return "DW_AT_language"; | |
3844 | case DW_AT_member: | |
3845 | return "DW_AT_member"; | |
3846 | case DW_AT_discr: | |
3847 | return "DW_AT_discr"; | |
3848 | case DW_AT_discr_value: | |
3849 | return "DW_AT_discr_value"; | |
3850 | case DW_AT_visibility: | |
3851 | return "DW_AT_visibility"; | |
3852 | case DW_AT_import: | |
3853 | return "DW_AT_import"; | |
3854 | case DW_AT_string_length: | |
3855 | return "DW_AT_string_length"; | |
3856 | case DW_AT_common_reference: | |
3857 | return "DW_AT_common_reference"; | |
3858 | case DW_AT_comp_dir: | |
3859 | return "DW_AT_comp_dir"; | |
3860 | case DW_AT_const_value: | |
3861 | return "DW_AT_const_value"; | |
3862 | case DW_AT_containing_type: | |
3863 | return "DW_AT_containing_type"; | |
3864 | case DW_AT_default_value: | |
3865 | return "DW_AT_default_value"; | |
3866 | case DW_AT_inline: | |
3867 | return "DW_AT_inline"; | |
3868 | case DW_AT_is_optional: | |
3869 | return "DW_AT_is_optional"; | |
3870 | case DW_AT_lower_bound: | |
3871 | return "DW_AT_lower_bound"; | |
3872 | case DW_AT_producer: | |
3873 | return "DW_AT_producer"; | |
3874 | case DW_AT_prototyped: | |
3875 | return "DW_AT_prototyped"; | |
3876 | case DW_AT_return_addr: | |
3877 | return "DW_AT_return_addr"; | |
3878 | case DW_AT_start_scope: | |
3879 | return "DW_AT_start_scope"; | |
3880 | case DW_AT_stride_size: | |
3881 | return "DW_AT_stride_size"; | |
3882 | case DW_AT_upper_bound: | |
3883 | return "DW_AT_upper_bound"; | |
3884 | case DW_AT_abstract_origin: | |
3885 | return "DW_AT_abstract_origin"; | |
3886 | case DW_AT_accessibility: | |
3887 | return "DW_AT_accessibility"; | |
3888 | case DW_AT_address_class: | |
3889 | return "DW_AT_address_class"; | |
3890 | case DW_AT_artificial: | |
3891 | return "DW_AT_artificial"; | |
3892 | case DW_AT_base_types: | |
3893 | return "DW_AT_base_types"; | |
3894 | case DW_AT_calling_convention: | |
3895 | return "DW_AT_calling_convention"; | |
3896 | case DW_AT_count: | |
3897 | return "DW_AT_count"; | |
3898 | case DW_AT_data_member_location: | |
3899 | return "DW_AT_data_member_location"; | |
3900 | case DW_AT_decl_column: | |
3901 | return "DW_AT_decl_column"; | |
3902 | case DW_AT_decl_file: | |
3903 | return "DW_AT_decl_file"; | |
3904 | case DW_AT_decl_line: | |
3905 | return "DW_AT_decl_line"; | |
3906 | case DW_AT_declaration: | |
3907 | return "DW_AT_declaration"; | |
3908 | case DW_AT_discr_list: | |
3909 | return "DW_AT_discr_list"; | |
3910 | case DW_AT_encoding: | |
3911 | return "DW_AT_encoding"; | |
3912 | case DW_AT_external: | |
3913 | return "DW_AT_external"; | |
3914 | case DW_AT_frame_base: | |
3915 | return "DW_AT_frame_base"; | |
3916 | case DW_AT_friend: | |
3917 | return "DW_AT_friend"; | |
3918 | case DW_AT_identifier_case: | |
3919 | return "DW_AT_identifier_case"; | |
3920 | case DW_AT_macro_info: | |
3921 | return "DW_AT_macro_info"; | |
3922 | case DW_AT_namelist_items: | |
3923 | return "DW_AT_namelist_items"; | |
3924 | case DW_AT_priority: | |
3925 | return "DW_AT_priority"; | |
3926 | case DW_AT_segment: | |
3927 | return "DW_AT_segment"; | |
3928 | case DW_AT_specification: | |
3929 | return "DW_AT_specification"; | |
3930 | case DW_AT_static_link: | |
3931 | return "DW_AT_static_link"; | |
3932 | case DW_AT_type: | |
3933 | return "DW_AT_type"; | |
3934 | case DW_AT_use_location: | |
3935 | return "DW_AT_use_location"; | |
3936 | case DW_AT_variable_parameter: | |
3937 | return "DW_AT_variable_parameter"; | |
3938 | case DW_AT_virtuality: | |
3939 | return "DW_AT_virtuality"; | |
3940 | case DW_AT_vtable_elem_location: | |
3941 | return "DW_AT_vtable_elem_location"; | |
3942 | ||
3943 | case DW_AT_MIPS_fde: | |
3944 | return "DW_AT_MIPS_fde"; | |
3945 | case DW_AT_MIPS_loop_begin: | |
3946 | return "DW_AT_MIPS_loop_begin"; | |
3947 | case DW_AT_MIPS_tail_loop_begin: | |
3948 | return "DW_AT_MIPS_tail_loop_begin"; | |
3949 | case DW_AT_MIPS_epilog_begin: | |
3950 | return "DW_AT_MIPS_epilog_begin"; | |
3951 | case DW_AT_MIPS_loop_unroll_factor: | |
3952 | return "DW_AT_MIPS_loop_unroll_factor"; | |
3953 | case DW_AT_MIPS_software_pipeline_depth: | |
3954 | return "DW_AT_MIPS_software_pipeline_depth"; | |
3955 | case DW_AT_MIPS_linkage_name: | |
3956 | return "DW_AT_MIPS_linkage_name"; | |
3957 | case DW_AT_MIPS_stride: | |
3958 | return "DW_AT_MIPS_stride"; | |
3959 | case DW_AT_MIPS_abstract_name: | |
3960 | return "DW_AT_MIPS_abstract_name"; | |
3961 | case DW_AT_MIPS_clone_origin: | |
3962 | return "DW_AT_MIPS_clone_origin"; | |
3963 | case DW_AT_MIPS_has_inlines: | |
3964 | return "DW_AT_MIPS_has_inlines"; | |
3965 | ||
3966 | case DW_AT_sf_names: | |
3967 | return "DW_AT_sf_names"; | |
3968 | case DW_AT_src_info: | |
3969 | return "DW_AT_src_info"; | |
3970 | case DW_AT_mac_info: | |
3971 | return "DW_AT_mac_info"; | |
3972 | case DW_AT_src_coords: | |
3973 | return "DW_AT_src_coords"; | |
3974 | case DW_AT_body_begin: | |
3975 | return "DW_AT_body_begin"; | |
3976 | case DW_AT_body_end: | |
3977 | return "DW_AT_body_end"; | |
3978 | default: | |
3979 | return "DW_AT_<unknown>"; | |
3980 | } | |
3981 | } | |
3982 | ||
3983 | /* Convert a DWARF value form code into its string name. */ | |
3984 | ||
3985 | static const char * | |
3986 | dwarf_form_name (form) | |
3987 | register unsigned form; | |
3988 | { | |
3989 | switch (form) | |
3990 | { | |
3991 | case DW_FORM_addr: | |
3992 | return "DW_FORM_addr"; | |
3993 | case DW_FORM_block2: | |
3994 | return "DW_FORM_block2"; | |
3995 | case DW_FORM_block4: | |
3996 | return "DW_FORM_block4"; | |
3997 | case DW_FORM_data2: | |
3998 | return "DW_FORM_data2"; | |
3999 | case DW_FORM_data4: | |
4000 | return "DW_FORM_data4"; | |
4001 | case DW_FORM_data8: | |
4002 | return "DW_FORM_data8"; | |
4003 | case DW_FORM_string: | |
4004 | return "DW_FORM_string"; | |
4005 | case DW_FORM_block: | |
4006 | return "DW_FORM_block"; | |
4007 | case DW_FORM_block1: | |
4008 | return "DW_FORM_block1"; | |
4009 | case DW_FORM_data1: | |
4010 | return "DW_FORM_data1"; | |
4011 | case DW_FORM_flag: | |
4012 | return "DW_FORM_flag"; | |
4013 | case DW_FORM_sdata: | |
4014 | return "DW_FORM_sdata"; | |
4015 | case DW_FORM_strp: | |
4016 | return "DW_FORM_strp"; | |
4017 | case DW_FORM_udata: | |
4018 | return "DW_FORM_udata"; | |
4019 | case DW_FORM_ref_addr: | |
4020 | return "DW_FORM_ref_addr"; | |
4021 | case DW_FORM_ref1: | |
4022 | return "DW_FORM_ref1"; | |
4023 | case DW_FORM_ref2: | |
4024 | return "DW_FORM_ref2"; | |
4025 | case DW_FORM_ref4: | |
4026 | return "DW_FORM_ref4"; | |
4027 | case DW_FORM_ref8: | |
4028 | return "DW_FORM_ref8"; | |
4029 | case DW_FORM_ref_udata: | |
4030 | return "DW_FORM_ref_udata"; | |
4031 | case DW_FORM_indirect: | |
4032 | return "DW_FORM_indirect"; | |
3f76745e | 4033 | default: |
7d9d8943 | 4034 | return "DW_FORM_<unknown>"; |
a3f97cbb JW |
4035 | } |
4036 | } | |
4037 | ||
3f76745e | 4038 | /* Convert a DWARF type code into its string name. */ |
71dfc51f | 4039 | |
487a6e06 | 4040 | #if 0 |
d560ee52 | 4041 | static const char * |
3f76745e JM |
4042 | dwarf_type_encoding_name (enc) |
4043 | register unsigned enc; | |
a3f97cbb | 4044 | { |
3f76745e | 4045 | switch (enc) |
a3f97cbb | 4046 | { |
3f76745e JM |
4047 | case DW_ATE_address: |
4048 | return "DW_ATE_address"; | |
4049 | case DW_ATE_boolean: | |
4050 | return "DW_ATE_boolean"; | |
4051 | case DW_ATE_complex_float: | |
4052 | return "DW_ATE_complex_float"; | |
4053 | case DW_ATE_float: | |
4054 | return "DW_ATE_float"; | |
4055 | case DW_ATE_signed: | |
4056 | return "DW_ATE_signed"; | |
4057 | case DW_ATE_signed_char: | |
4058 | return "DW_ATE_signed_char"; | |
4059 | case DW_ATE_unsigned: | |
4060 | return "DW_ATE_unsigned"; | |
4061 | case DW_ATE_unsigned_char: | |
4062 | return "DW_ATE_unsigned_char"; | |
4063 | default: | |
4064 | return "DW_ATE_<unknown>"; | |
4065 | } | |
a3f97cbb | 4066 | } |
487a6e06 | 4067 | #endif |
3f76745e JM |
4068 | \f |
4069 | /* Determine the "ultimate origin" of a decl. The decl may be an inlined | |
4070 | instance of an inlined instance of a decl which is local to an inline | |
4071 | function, so we have to trace all of the way back through the origin chain | |
4072 | to find out what sort of node actually served as the original seed for the | |
4073 | given block. */ | |
a3f97cbb | 4074 | |
3f76745e JM |
4075 | static tree |
4076 | decl_ultimate_origin (decl) | |
4077 | register tree decl; | |
a3f97cbb | 4078 | { |
10a11b75 JM |
4079 | /* output_inline_function sets DECL_ABSTRACT_ORIGIN for all the |
4080 | nodes in the function to point to themselves; ignore that if | |
4081 | we're trying to output the abstract instance of this function. */ | |
4082 | if (DECL_ABSTRACT (decl) && DECL_ABSTRACT_ORIGIN (decl) == decl) | |
4083 | return NULL_TREE; | |
4084 | ||
556273e0 | 4085 | #ifdef ENABLE_CHECKING |
02e24c7a MM |
4086 | if (DECL_FROM_INLINE (DECL_ORIGIN (decl))) |
4087 | /* Since the DECL_ABSTRACT_ORIGIN for a DECL is supposed to be the | |
4088 | most distant ancestor, this should never happen. */ | |
4089 | abort (); | |
4090 | #endif | |
3f76745e | 4091 | |
02e24c7a | 4092 | return DECL_ABSTRACT_ORIGIN (decl); |
a3f97cbb JW |
4093 | } |
4094 | ||
3f76745e JM |
4095 | /* Determine the "ultimate origin" of a block. The block may be an inlined |
4096 | instance of an inlined instance of a block which is local to an inline | |
4097 | function, so we have to trace all of the way back through the origin chain | |
4098 | to find out what sort of node actually served as the original seed for the | |
4099 | given block. */ | |
71dfc51f | 4100 | |
3f76745e JM |
4101 | static tree |
4102 | block_ultimate_origin (block) | |
4103 | register tree block; | |
a3f97cbb | 4104 | { |
3f76745e | 4105 | register tree immediate_origin = BLOCK_ABSTRACT_ORIGIN (block); |
71dfc51f | 4106 | |
10a11b75 JM |
4107 | /* output_inline_function sets BLOCK_ABSTRACT_ORIGIN for all the |
4108 | nodes in the function to point to themselves; ignore that if | |
4109 | we're trying to output the abstract instance of this function. */ | |
4110 | if (BLOCK_ABSTRACT (block) && immediate_origin == block) | |
4111 | return NULL_TREE; | |
4112 | ||
3f76745e JM |
4113 | if (immediate_origin == NULL_TREE) |
4114 | return NULL_TREE; | |
4115 | else | |
4116 | { | |
4117 | register tree ret_val; | |
4118 | register tree lookahead = immediate_origin; | |
71dfc51f | 4119 | |
3f76745e JM |
4120 | do |
4121 | { | |
4122 | ret_val = lookahead; | |
4123 | lookahead = (TREE_CODE (ret_val) == BLOCK) | |
4124 | ? BLOCK_ABSTRACT_ORIGIN (ret_val) | |
4125 | : NULL; | |
4126 | } | |
4127 | while (lookahead != NULL && lookahead != ret_val); | |
4128 | ||
4129 | return ret_val; | |
4130 | } | |
a3f97cbb JW |
4131 | } |
4132 | ||
3f76745e JM |
4133 | /* Get the class to which DECL belongs, if any. In g++, the DECL_CONTEXT |
4134 | of a virtual function may refer to a base class, so we check the 'this' | |
4135 | parameter. */ | |
71dfc51f | 4136 | |
3f76745e JM |
4137 | static tree |
4138 | decl_class_context (decl) | |
4139 | tree decl; | |
a3f97cbb | 4140 | { |
3f76745e | 4141 | tree context = NULL_TREE; |
71dfc51f | 4142 | |
3f76745e JM |
4143 | if (TREE_CODE (decl) != FUNCTION_DECL || ! DECL_VINDEX (decl)) |
4144 | context = DECL_CONTEXT (decl); | |
4145 | else | |
4146 | context = TYPE_MAIN_VARIANT | |
4147 | (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))))); | |
71dfc51f | 4148 | |
2f939d94 | 4149 | if (context && !TYPE_P (context)) |
3f76745e JM |
4150 | context = NULL_TREE; |
4151 | ||
4152 | return context; | |
a3f97cbb JW |
4153 | } |
4154 | \f | |
a96c67ec | 4155 | /* Add an attribute/value pair to a DIE. We build the lists up in reverse |
881c6935 | 4156 | addition order, and correct that in reverse_all_dies. */ |
71dfc51f RK |
4157 | |
4158 | static inline void | |
3f76745e JM |
4159 | add_dwarf_attr (die, attr) |
4160 | register dw_die_ref die; | |
4161 | register dw_attr_ref attr; | |
a3f97cbb | 4162 | { |
3f76745e | 4163 | if (die != NULL && attr != NULL) |
a3f97cbb | 4164 | { |
a96c67ec JM |
4165 | attr->dw_attr_next = die->die_attr; |
4166 | die->die_attr = attr; | |
a3f97cbb JW |
4167 | } |
4168 | } | |
4169 | ||
c6991660 | 4170 | static inline dw_val_class AT_class PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4171 | static inline dw_val_class |
4172 | AT_class (a) | |
4173 | dw_attr_ref a; | |
4174 | { | |
4175 | return a->dw_attr_val.val_class; | |
4176 | } | |
4177 | ||
3f76745e | 4178 | /* Add a flag value attribute to a DIE. */ |
71dfc51f | 4179 | |
3f76745e JM |
4180 | static inline void |
4181 | add_AT_flag (die, attr_kind, flag) | |
4182 | register dw_die_ref die; | |
4183 | register enum dwarf_attribute attr_kind; | |
4184 | register unsigned flag; | |
a3f97cbb | 4185 | { |
3f76745e | 4186 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4187 | |
3f76745e JM |
4188 | attr->dw_attr_next = NULL; |
4189 | attr->dw_attr = attr_kind; | |
4190 | attr->dw_attr_val.val_class = dw_val_class_flag; | |
4191 | attr->dw_attr_val.v.val_flag = flag; | |
4192 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4193 | } |
4194 | ||
c6991660 | 4195 | static inline unsigned AT_flag PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4196 | static inline unsigned |
4197 | AT_flag (a) | |
4198 | register dw_attr_ref a; | |
4199 | { | |
4200 | if (a && AT_class (a) == dw_val_class_flag) | |
4201 | return a->dw_attr_val.v.val_flag; | |
4202 | ||
40e8cc95 | 4203 | abort (); |
a96c67ec JM |
4204 | } |
4205 | ||
3f76745e | 4206 | /* Add a signed integer attribute value to a DIE. */ |
71dfc51f | 4207 | |
3f76745e JM |
4208 | static inline void |
4209 | add_AT_int (die, attr_kind, int_val) | |
4210 | register dw_die_ref die; | |
4211 | register enum dwarf_attribute attr_kind; | |
4212 | register long int int_val; | |
a3f97cbb | 4213 | { |
3f76745e JM |
4214 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
4215 | ||
4216 | attr->dw_attr_next = NULL; | |
4217 | attr->dw_attr = attr_kind; | |
4218 | attr->dw_attr_val.val_class = dw_val_class_const; | |
4219 | attr->dw_attr_val.v.val_int = int_val; | |
4220 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4221 | } |
4222 | ||
c6991660 | 4223 | static inline long int AT_int PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4224 | static inline long int |
4225 | AT_int (a) | |
4226 | register dw_attr_ref a; | |
4227 | { | |
4228 | if (a && AT_class (a) == dw_val_class_const) | |
4229 | return a->dw_attr_val.v.val_int; | |
4230 | ||
40e8cc95 | 4231 | abort (); |
a96c67ec JM |
4232 | } |
4233 | ||
3f76745e | 4234 | /* Add an unsigned integer attribute value to a DIE. */ |
71dfc51f | 4235 | |
3f76745e JM |
4236 | static inline void |
4237 | add_AT_unsigned (die, attr_kind, unsigned_val) | |
4238 | register dw_die_ref die; | |
4239 | register enum dwarf_attribute attr_kind; | |
4240 | register unsigned long unsigned_val; | |
a3f97cbb | 4241 | { |
3f76745e JM |
4242 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
4243 | ||
4244 | attr->dw_attr_next = NULL; | |
4245 | attr->dw_attr = attr_kind; | |
4246 | attr->dw_attr_val.val_class = dw_val_class_unsigned_const; | |
4247 | attr->dw_attr_val.v.val_unsigned = unsigned_val; | |
4248 | add_dwarf_attr (die, attr); | |
a3f97cbb | 4249 | } |
71dfc51f | 4250 | |
c6991660 | 4251 | static inline unsigned long AT_unsigned PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4252 | static inline unsigned long |
4253 | AT_unsigned (a) | |
4254 | register dw_attr_ref a; | |
4255 | { | |
4256 | if (a && AT_class (a) == dw_val_class_unsigned_const) | |
4257 | return a->dw_attr_val.v.val_unsigned; | |
4258 | ||
40e8cc95 | 4259 | abort (); |
a96c67ec JM |
4260 | } |
4261 | ||
3f76745e JM |
4262 | /* Add an unsigned double integer attribute value to a DIE. */ |
4263 | ||
4264 | static inline void | |
4265 | add_AT_long_long (die, attr_kind, val_hi, val_low) | |
a3f97cbb | 4266 | register dw_die_ref die; |
3f76745e JM |
4267 | register enum dwarf_attribute attr_kind; |
4268 | register unsigned long val_hi; | |
4269 | register unsigned long val_low; | |
a3f97cbb | 4270 | { |
3f76745e | 4271 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4272 | |
3f76745e JM |
4273 | attr->dw_attr_next = NULL; |
4274 | attr->dw_attr = attr_kind; | |
4275 | attr->dw_attr_val.val_class = dw_val_class_long_long; | |
4276 | attr->dw_attr_val.v.val_long_long.hi = val_hi; | |
4277 | attr->dw_attr_val.v.val_long_long.low = val_low; | |
4278 | add_dwarf_attr (die, attr); | |
4279 | } | |
71dfc51f | 4280 | |
3f76745e | 4281 | /* Add a floating point attribute value to a DIE and return it. */ |
71dfc51f | 4282 | |
3f76745e JM |
4283 | static inline void |
4284 | add_AT_float (die, attr_kind, length, array) | |
4285 | register dw_die_ref die; | |
4286 | register enum dwarf_attribute attr_kind; | |
4287 | register unsigned length; | |
4288 | register long *array; | |
4289 | { | |
4290 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
4291 | ||
4292 | attr->dw_attr_next = NULL; | |
4293 | attr->dw_attr = attr_kind; | |
4294 | attr->dw_attr_val.val_class = dw_val_class_float; | |
4295 | attr->dw_attr_val.v.val_float.length = length; | |
4296 | attr->dw_attr_val.v.val_float.array = array; | |
4297 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4298 | } |
4299 | ||
3f76745e | 4300 | /* Add a string attribute value to a DIE. */ |
71dfc51f | 4301 | |
3f76745e JM |
4302 | static inline void |
4303 | add_AT_string (die, attr_kind, str) | |
a3f97cbb | 4304 | register dw_die_ref die; |
3f76745e | 4305 | register enum dwarf_attribute attr_kind; |
d560ee52 | 4306 | register const char *str; |
a3f97cbb | 4307 | { |
3f76745e | 4308 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4309 | |
3f76745e JM |
4310 | attr->dw_attr_next = NULL; |
4311 | attr->dw_attr = attr_kind; | |
4312 | attr->dw_attr_val.val_class = dw_val_class_str; | |
4313 | attr->dw_attr_val.v.val_str = xstrdup (str); | |
4314 | add_dwarf_attr (die, attr); | |
4315 | } | |
71dfc51f | 4316 | |
c6991660 | 4317 | static inline const char *AT_string PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4318 | static inline const char * |
4319 | AT_string (a) | |
4320 | register dw_attr_ref a; | |
4321 | { | |
4322 | if (a && AT_class (a) == dw_val_class_str) | |
4323 | return a->dw_attr_val.v.val_str; | |
4324 | ||
40e8cc95 | 4325 | abort (); |
a96c67ec JM |
4326 | } |
4327 | ||
3f76745e | 4328 | /* Add a DIE reference attribute value to a DIE. */ |
71dfc51f | 4329 | |
3f76745e JM |
4330 | static inline void |
4331 | add_AT_die_ref (die, attr_kind, targ_die) | |
4332 | register dw_die_ref die; | |
4333 | register enum dwarf_attribute attr_kind; | |
4334 | register dw_die_ref targ_die; | |
4335 | { | |
4336 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 4337 | |
3f76745e JM |
4338 | attr->dw_attr_next = NULL; |
4339 | attr->dw_attr = attr_kind; | |
4340 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
881c6935 JM |
4341 | attr->dw_attr_val.v.val_die_ref.die = targ_die; |
4342 | attr->dw_attr_val.v.val_die_ref.external = 0; | |
3f76745e JM |
4343 | add_dwarf_attr (die, attr); |
4344 | } | |
b1ccbc24 | 4345 | |
c6991660 | 4346 | static inline dw_die_ref AT_ref PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4347 | static inline dw_die_ref |
4348 | AT_ref (a) | |
4349 | register dw_attr_ref a; | |
4350 | { | |
4351 | if (a && AT_class (a) == dw_val_class_die_ref) | |
881c6935 | 4352 | return a->dw_attr_val.v.val_die_ref.die; |
a96c67ec | 4353 | |
40e8cc95 | 4354 | abort (); |
a96c67ec JM |
4355 | } |
4356 | ||
881c6935 JM |
4357 | static inline int AT_ref_external PARAMS ((dw_attr_ref)); |
4358 | static inline int | |
4359 | AT_ref_external (a) | |
4360 | register dw_attr_ref a; | |
4361 | { | |
4362 | if (a && AT_class (a) == dw_val_class_die_ref) | |
4363 | return a->dw_attr_val.v.val_die_ref.external; | |
4364 | ||
4365 | return 0; | |
4366 | } | |
4367 | ||
4368 | static inline void set_AT_ref_external PARAMS ((dw_attr_ref, int)); | |
4369 | static inline void | |
4370 | set_AT_ref_external (a, i) | |
4371 | register dw_attr_ref a; | |
4372 | int i; | |
4373 | { | |
4374 | if (a && AT_class (a) == dw_val_class_die_ref) | |
4375 | a->dw_attr_val.v.val_die_ref.external = i; | |
4376 | else | |
4377 | abort (); | |
4378 | } | |
4379 | ||
3f76745e | 4380 | /* Add an FDE reference attribute value to a DIE. */ |
b1ccbc24 | 4381 | |
3f76745e JM |
4382 | static inline void |
4383 | add_AT_fde_ref (die, attr_kind, targ_fde) | |
4384 | register dw_die_ref die; | |
4385 | register enum dwarf_attribute attr_kind; | |
4386 | register unsigned targ_fde; | |
4387 | { | |
4388 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
b1ccbc24 | 4389 | |
3f76745e JM |
4390 | attr->dw_attr_next = NULL; |
4391 | attr->dw_attr = attr_kind; | |
4392 | attr->dw_attr_val.val_class = dw_val_class_fde_ref; | |
4393 | attr->dw_attr_val.v.val_fde_index = targ_fde; | |
4394 | add_dwarf_attr (die, attr); | |
a3f97cbb | 4395 | } |
71dfc51f | 4396 | |
3f76745e | 4397 | /* Add a location description attribute value to a DIE. */ |
71dfc51f | 4398 | |
3f76745e JM |
4399 | static inline void |
4400 | add_AT_loc (die, attr_kind, loc) | |
4401 | register dw_die_ref die; | |
4402 | register enum dwarf_attribute attr_kind; | |
4403 | register dw_loc_descr_ref loc; | |
4404 | { | |
4405 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 4406 | |
3f76745e JM |
4407 | attr->dw_attr_next = NULL; |
4408 | attr->dw_attr = attr_kind; | |
4409 | attr->dw_attr_val.val_class = dw_val_class_loc; | |
4410 | attr->dw_attr_val.v.val_loc = loc; | |
4411 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4412 | } |
4413 | ||
c6991660 | 4414 | static inline dw_loc_descr_ref AT_loc PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4415 | static inline dw_loc_descr_ref |
4416 | AT_loc (a) | |
4417 | register dw_attr_ref a; | |
4418 | { | |
4419 | if (a && AT_class (a) == dw_val_class_loc) | |
4420 | return a->dw_attr_val.v.val_loc; | |
4421 | ||
40e8cc95 | 4422 | abort (); |
a96c67ec JM |
4423 | } |
4424 | ||
3f76745e | 4425 | /* Add an address constant attribute value to a DIE. */ |
71dfc51f | 4426 | |
3f76745e JM |
4427 | static inline void |
4428 | add_AT_addr (die, attr_kind, addr) | |
4429 | register dw_die_ref die; | |
4430 | register enum dwarf_attribute attr_kind; | |
1865dbb5 | 4431 | rtx addr; |
a3f97cbb | 4432 | { |
3f76745e | 4433 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4434 | |
3f76745e JM |
4435 | attr->dw_attr_next = NULL; |
4436 | attr->dw_attr = attr_kind; | |
4437 | attr->dw_attr_val.val_class = dw_val_class_addr; | |
4438 | attr->dw_attr_val.v.val_addr = addr; | |
4439 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
4440 | } |
4441 | ||
c6991660 | 4442 | static inline rtx AT_addr PARAMS ((dw_attr_ref)); |
1865dbb5 | 4443 | static inline rtx |
a96c67ec JM |
4444 | AT_addr (a) |
4445 | register dw_attr_ref a; | |
4446 | { | |
4447 | if (a && AT_class (a) == dw_val_class_addr) | |
4448 | return a->dw_attr_val.v.val_addr; | |
4449 | ||
40e8cc95 | 4450 | abort (); |
a96c67ec JM |
4451 | } |
4452 | ||
3f76745e | 4453 | /* Add a label identifier attribute value to a DIE. */ |
71dfc51f | 4454 | |
3f76745e JM |
4455 | static inline void |
4456 | add_AT_lbl_id (die, attr_kind, lbl_id) | |
4457 | register dw_die_ref die; | |
4458 | register enum dwarf_attribute attr_kind; | |
d3e3972c | 4459 | register const char *lbl_id; |
a3f97cbb | 4460 | { |
3f76745e | 4461 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 4462 | |
3f76745e JM |
4463 | attr->dw_attr_next = NULL; |
4464 | attr->dw_attr = attr_kind; | |
4465 | attr->dw_attr_val.val_class = dw_val_class_lbl_id; | |
4466 | attr->dw_attr_val.v.val_lbl_id = xstrdup (lbl_id); | |
4467 | add_dwarf_attr (die, attr); | |
4468 | } | |
71dfc51f | 4469 | |
3f76745e JM |
4470 | /* Add a section offset attribute value to a DIE. */ |
4471 | ||
4472 | static inline void | |
8b790721 | 4473 | add_AT_lbl_offset (die, attr_kind, label) |
3f76745e JM |
4474 | register dw_die_ref die; |
4475 | register enum dwarf_attribute attr_kind; | |
d3e3972c | 4476 | register const char *label; |
3f76745e JM |
4477 | { |
4478 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 4479 | |
3f76745e JM |
4480 | attr->dw_attr_next = NULL; |
4481 | attr->dw_attr = attr_kind; | |
8b790721 | 4482 | attr->dw_attr_val.val_class = dw_val_class_lbl_offset; |
a96c67ec | 4483 | attr->dw_attr_val.v.val_lbl_id = xstrdup (label); |
3f76745e | 4484 | add_dwarf_attr (die, attr); |
a3f97cbb JW |
4485 | } |
4486 | ||
c6991660 | 4487 | static inline const char *AT_lbl PARAMS ((dw_attr_ref)); |
a96c67ec JM |
4488 | static inline const char * |
4489 | AT_lbl (a) | |
4490 | register dw_attr_ref a; | |
a3f97cbb | 4491 | { |
a96c67ec JM |
4492 | if (a && (AT_class (a) == dw_val_class_lbl_id |
4493 | || AT_class (a) == dw_val_class_lbl_offset)) | |
4494 | return a->dw_attr_val.v.val_lbl_id; | |
71dfc51f | 4495 | |
40e8cc95 | 4496 | abort (); |
a3f97cbb JW |
4497 | } |
4498 | ||
3f76745e | 4499 | /* Get the attribute of type attr_kind. */ |
71dfc51f | 4500 | |
3f76745e JM |
4501 | static inline dw_attr_ref |
4502 | get_AT (die, attr_kind) | |
4503 | register dw_die_ref die; | |
4504 | register enum dwarf_attribute attr_kind; | |
f37230f0 | 4505 | { |
3f76745e JM |
4506 | register dw_attr_ref a; |
4507 | register dw_die_ref spec = NULL; | |
556273e0 | 4508 | |
3f76745e JM |
4509 | if (die != NULL) |
4510 | { | |
4511 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
4512 | { | |
4513 | if (a->dw_attr == attr_kind) | |
4514 | return a; | |
71dfc51f | 4515 | |
3f76745e JM |
4516 | if (a->dw_attr == DW_AT_specification |
4517 | || a->dw_attr == DW_AT_abstract_origin) | |
a96c67ec | 4518 | spec = AT_ref (a); |
3f76745e | 4519 | } |
71dfc51f | 4520 | |
3f76745e JM |
4521 | if (spec) |
4522 | return get_AT (spec, attr_kind); | |
4523 | } | |
4524 | ||
4525 | return NULL; | |
f37230f0 JM |
4526 | } |
4527 | ||
3f76745e JM |
4528 | /* Return the "low pc" attribute value, typically associated with |
4529 | a subprogram DIE. Return null if the "low pc" attribute is | |
4530 | either not prsent, or if it cannot be represented as an | |
4531 | assembler label identifier. */ | |
71dfc51f | 4532 | |
a96c67ec | 4533 | static inline const char * |
3f76745e JM |
4534 | get_AT_low_pc (die) |
4535 | register dw_die_ref die; | |
7e23cb16 | 4536 | { |
3f76745e | 4537 | register dw_attr_ref a = get_AT (die, DW_AT_low_pc); |
40e8cc95 | 4538 | return a ? AT_lbl (a) : NULL; |
7e23cb16 JM |
4539 | } |
4540 | ||
3f76745e JM |
4541 | /* Return the "high pc" attribute value, typically associated with |
4542 | a subprogram DIE. Return null if the "high pc" attribute is | |
4543 | either not prsent, or if it cannot be represented as an | |
4544 | assembler label identifier. */ | |
71dfc51f | 4545 | |
a96c67ec | 4546 | static inline const char * |
3f76745e | 4547 | get_AT_hi_pc (die) |
a3f97cbb JW |
4548 | register dw_die_ref die; |
4549 | { | |
3f76745e | 4550 | register dw_attr_ref a = get_AT (die, DW_AT_high_pc); |
40e8cc95 | 4551 | return a ? AT_lbl (a) : NULL; |
3f76745e JM |
4552 | } |
4553 | ||
4554 | /* Return the value of the string attribute designated by ATTR_KIND, or | |
4555 | NULL if it is not present. */ | |
71dfc51f | 4556 | |
a96c67ec | 4557 | static inline const char * |
3f76745e JM |
4558 | get_AT_string (die, attr_kind) |
4559 | register dw_die_ref die; | |
4560 | register enum dwarf_attribute attr_kind; | |
4561 | { | |
4562 | register dw_attr_ref a = get_AT (die, attr_kind); | |
40e8cc95 | 4563 | return a ? AT_string (a) : NULL; |
a3f97cbb JW |
4564 | } |
4565 | ||
3f76745e JM |
4566 | /* Return the value of the flag attribute designated by ATTR_KIND, or -1 |
4567 | if it is not present. */ | |
71dfc51f | 4568 | |
3f76745e JM |
4569 | static inline int |
4570 | get_AT_flag (die, attr_kind) | |
4571 | register dw_die_ref die; | |
4572 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 4573 | { |
3f76745e | 4574 | register dw_attr_ref a = get_AT (die, attr_kind); |
40e8cc95 | 4575 | return a ? AT_flag (a) : 0; |
a3f97cbb JW |
4576 | } |
4577 | ||
3f76745e JM |
4578 | /* Return the value of the unsigned attribute designated by ATTR_KIND, or 0 |
4579 | if it is not present. */ | |
71dfc51f | 4580 | |
3f76745e JM |
4581 | static inline unsigned |
4582 | get_AT_unsigned (die, attr_kind) | |
4583 | register dw_die_ref die; | |
4584 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 4585 | { |
3f76745e | 4586 | register dw_attr_ref a = get_AT (die, attr_kind); |
40e8cc95 | 4587 | return a ? AT_unsigned (a) : 0; |
a96c67ec | 4588 | } |
71dfc51f | 4589 | |
a96c67ec JM |
4590 | static inline dw_die_ref |
4591 | get_AT_ref (die, attr_kind) | |
4592 | dw_die_ref die; | |
4593 | register enum dwarf_attribute attr_kind; | |
4594 | { | |
4595 | register dw_attr_ref a = get_AT (die, attr_kind); | |
40e8cc95 | 4596 | return a ? AT_ref (a) : NULL; |
3f76745e | 4597 | } |
71dfc51f | 4598 | |
3f76745e JM |
4599 | static inline int |
4600 | is_c_family () | |
4601 | { | |
4602 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 4603 | |
3f76745e JM |
4604 | return (lang == DW_LANG_C || lang == DW_LANG_C89 |
4605 | || lang == DW_LANG_C_plus_plus); | |
556273e0 | 4606 | } |
71dfc51f | 4607 | |
3f76745e JM |
4608 | static inline int |
4609 | is_fortran () | |
4610 | { | |
4611 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 4612 | |
3f76745e | 4613 | return (lang == DW_LANG_Fortran77 || lang == DW_LANG_Fortran90); |
556273e0 | 4614 | } |
71dfc51f | 4615 | |
28985b81 AG |
4616 | static inline int |
4617 | is_java () | |
4618 | { | |
4619 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
4620 | ||
4621 | return (lang == DW_LANG_Java); | |
4622 | } | |
4623 | ||
10a11b75 | 4624 | /* Free up the memory used by A. */ |
71dfc51f | 4625 | |
c6991660 | 4626 | static inline void free_AT PARAMS ((dw_attr_ref)); |
3f76745e | 4627 | static inline void |
10a11b75 JM |
4628 | free_AT (a) |
4629 | dw_attr_ref a; | |
4630 | { | |
4631 | switch (AT_class (a)) | |
4632 | { | |
10a11b75 JM |
4633 | case dw_val_class_str: |
4634 | case dw_val_class_lbl_id: | |
4635 | case dw_val_class_lbl_offset: | |
4636 | free (a->dw_attr_val.v.val_str); | |
4637 | break; | |
4638 | ||
3724ec07 WC |
4639 | case dw_val_class_float: |
4640 | free (a->dw_attr_val.v.val_float.array); | |
4641 | break; | |
4642 | ||
10a11b75 JM |
4643 | default: |
4644 | break; | |
4645 | } | |
4646 | ||
4647 | free (a); | |
556273e0 | 4648 | } |
10a11b75 JM |
4649 | |
4650 | /* Remove the specified attribute if present. */ | |
4651 | ||
4652 | static void | |
3f76745e JM |
4653 | remove_AT (die, attr_kind) |
4654 | register dw_die_ref die; | |
4655 | register enum dwarf_attribute attr_kind; | |
4656 | { | |
a96c67ec | 4657 | register dw_attr_ref *p; |
6d649d26 | 4658 | register dw_attr_ref removed = NULL; |
a3f97cbb | 4659 | |
3f76745e JM |
4660 | if (die != NULL) |
4661 | { | |
a96c67ec JM |
4662 | for (p = &(die->die_attr); *p; p = &((*p)->dw_attr_next)) |
4663 | if ((*p)->dw_attr == attr_kind) | |
4664 | { | |
4665 | removed = *p; | |
4666 | *p = (*p)->dw_attr_next; | |
4667 | break; | |
4668 | } | |
71dfc51f | 4669 | |
a96c67ec | 4670 | if (removed != 0) |
10a11b75 JM |
4671 | free_AT (removed); |
4672 | } | |
4673 | } | |
71dfc51f | 4674 | |
10a11b75 | 4675 | /* Free up the memory used by DIE. */ |
71dfc51f | 4676 | |
c6991660 | 4677 | static inline void free_die PARAMS ((dw_die_ref)); |
10a11b75 JM |
4678 | static inline void |
4679 | free_die (die) | |
4680 | dw_die_ref die; | |
4681 | { | |
4682 | remove_children (die); | |
4683 | free (die); | |
3f76745e | 4684 | } |
71dfc51f | 4685 | |
3f76745e | 4686 | /* Discard the children of this DIE. */ |
71dfc51f | 4687 | |
10a11b75 | 4688 | static void |
3f76745e JM |
4689 | remove_children (die) |
4690 | register dw_die_ref die; | |
4691 | { | |
4692 | register dw_die_ref child_die = die->die_child; | |
4693 | ||
4694 | die->die_child = NULL; | |
3f76745e JM |
4695 | |
4696 | while (child_die != NULL) | |
a3f97cbb | 4697 | { |
3f76745e JM |
4698 | register dw_die_ref tmp_die = child_die; |
4699 | register dw_attr_ref a; | |
71dfc51f | 4700 | |
3f76745e | 4701 | child_die = child_die->die_sib; |
556273e0 KH |
4702 | |
4703 | for (a = tmp_die->die_attr; a != NULL;) | |
a3f97cbb | 4704 | { |
3f76745e | 4705 | register dw_attr_ref tmp_a = a; |
71dfc51f | 4706 | |
3f76745e | 4707 | a = a->dw_attr_next; |
10a11b75 | 4708 | free_AT (tmp_a); |
a3f97cbb | 4709 | } |
71dfc51f | 4710 | |
10a11b75 | 4711 | free_die (tmp_die); |
3f76745e JM |
4712 | } |
4713 | } | |
71dfc51f | 4714 | |
a96c67ec | 4715 | /* Add a child DIE below its parent. We build the lists up in reverse |
881c6935 | 4716 | addition order, and correct that in reverse_all_dies. */ |
71dfc51f | 4717 | |
3f76745e JM |
4718 | static inline void |
4719 | add_child_die (die, child_die) | |
4720 | register dw_die_ref die; | |
4721 | register dw_die_ref child_die; | |
4722 | { | |
4723 | if (die != NULL && child_die != NULL) | |
e90b62db | 4724 | { |
3a88cbd1 JL |
4725 | if (die == child_die) |
4726 | abort (); | |
3f76745e | 4727 | child_die->die_parent = die; |
a96c67ec JM |
4728 | child_die->die_sib = die->die_child; |
4729 | die->die_child = child_die; | |
3f76745e JM |
4730 | } |
4731 | } | |
4732 | ||
2081603c JM |
4733 | /* Move CHILD, which must be a child of PARENT or the DIE for which PARENT |
4734 | is the specification, to the front of PARENT's list of children. */ | |
10a11b75 JM |
4735 | |
4736 | static void | |
4737 | splice_child_die (parent, child) | |
4738 | dw_die_ref parent, child; | |
4739 | { | |
4740 | dw_die_ref *p; | |
4741 | ||
4742 | /* We want the declaration DIE from inside the class, not the | |
4743 | specification DIE at toplevel. */ | |
4744 | if (child->die_parent != parent) | |
2081603c JM |
4745 | { |
4746 | dw_die_ref tmp = get_AT_ref (child, DW_AT_specification); | |
4747 | if (tmp) | |
4748 | child = tmp; | |
4749 | } | |
10a11b75 | 4750 | |
2081603c JM |
4751 | if (child->die_parent != parent |
4752 | && child->die_parent != get_AT_ref (parent, DW_AT_specification)) | |
10a11b75 JM |
4753 | abort (); |
4754 | ||
5de0e8d4 | 4755 | for (p = &(child->die_parent->die_child); *p; p = &((*p)->die_sib)) |
10a11b75 JM |
4756 | if (*p == child) |
4757 | { | |
4758 | *p = child->die_sib; | |
4759 | break; | |
4760 | } | |
4761 | ||
4762 | child->die_sib = parent->die_child; | |
4763 | parent->die_child = child; | |
4764 | } | |
4765 | ||
3f76745e JM |
4766 | /* Return a pointer to a newly created DIE node. */ |
4767 | ||
4768 | static inline dw_die_ref | |
4769 | new_die (tag_value, parent_die) | |
4770 | register enum dwarf_tag tag_value; | |
4771 | register dw_die_ref parent_die; | |
4772 | { | |
4773 | register dw_die_ref die = (dw_die_ref) xmalloc (sizeof (die_node)); | |
4774 | ||
4775 | die->die_tag = tag_value; | |
4776 | die->die_abbrev = 0; | |
4777 | die->die_offset = 0; | |
4778 | die->die_child = NULL; | |
4779 | die->die_parent = NULL; | |
4780 | die->die_sib = NULL; | |
3f76745e | 4781 | die->die_attr = NULL; |
881c6935 | 4782 | die->die_symbol = NULL; |
3f76745e JM |
4783 | |
4784 | if (parent_die != NULL) | |
4785 | add_child_die (parent_die, die); | |
4786 | else | |
ef76d03b JW |
4787 | { |
4788 | limbo_die_node *limbo_node; | |
4789 | ||
4790 | limbo_node = (limbo_die_node *) xmalloc (sizeof (limbo_die_node)); | |
4791 | limbo_node->die = die; | |
4792 | limbo_node->next = limbo_die_list; | |
4793 | limbo_die_list = limbo_node; | |
4794 | } | |
71dfc51f | 4795 | |
3f76745e JM |
4796 | return die; |
4797 | } | |
71dfc51f | 4798 | |
3f76745e | 4799 | /* Return the DIE associated with the given type specifier. */ |
71dfc51f | 4800 | |
3f76745e JM |
4801 | static inline dw_die_ref |
4802 | lookup_type_die (type) | |
4803 | register tree type; | |
4804 | { | |
4061f623 BS |
4805 | if (TREE_CODE (type) == VECTOR_TYPE) |
4806 | type = TYPE_DEBUG_REPRESENTATION_TYPE (type); | |
3f76745e JM |
4807 | return (dw_die_ref) TYPE_SYMTAB_POINTER (type); |
4808 | } | |
e90b62db | 4809 | |
3f76745e | 4810 | /* Equate a DIE to a given type specifier. */ |
71dfc51f | 4811 | |
10a11b75 | 4812 | static inline void |
3f76745e JM |
4813 | equate_type_number_to_die (type, type_die) |
4814 | register tree type; | |
4815 | register dw_die_ref type_die; | |
4816 | { | |
4817 | TYPE_SYMTAB_POINTER (type) = (char *) type_die; | |
4818 | } | |
71dfc51f | 4819 | |
3f76745e | 4820 | /* Return the DIE associated with a given declaration. */ |
71dfc51f | 4821 | |
3f76745e JM |
4822 | static inline dw_die_ref |
4823 | lookup_decl_die (decl) | |
4824 | register tree decl; | |
4825 | { | |
4826 | register unsigned decl_id = DECL_UID (decl); | |
4827 | ||
4828 | return (decl_id < decl_die_table_in_use | |
4829 | ? decl_die_table[decl_id] : NULL); | |
a3f97cbb JW |
4830 | } |
4831 | ||
3f76745e | 4832 | /* Equate a DIE to a particular declaration. */ |
71dfc51f | 4833 | |
3f76745e JM |
4834 | static void |
4835 | equate_decl_number_to_die (decl, decl_die) | |
4836 | register tree decl; | |
4837 | register dw_die_ref decl_die; | |
a3f97cbb | 4838 | { |
3f76745e | 4839 | register unsigned decl_id = DECL_UID (decl); |
3f76745e | 4840 | register unsigned num_allocated; |
d291dd49 | 4841 | |
3f76745e | 4842 | if (decl_id >= decl_die_table_allocated) |
a3f97cbb | 4843 | { |
3f76745e JM |
4844 | num_allocated |
4845 | = ((decl_id + 1 + DECL_DIE_TABLE_INCREMENT - 1) | |
4846 | / DECL_DIE_TABLE_INCREMENT) | |
4847 | * DECL_DIE_TABLE_INCREMENT; | |
4848 | ||
4849 | decl_die_table | |
4850 | = (dw_die_ref *) xrealloc (decl_die_table, | |
4851 | sizeof (dw_die_ref) * num_allocated); | |
4852 | ||
961192e1 | 4853 | memset ((char *) &decl_die_table[decl_die_table_allocated], 0, |
3f76745e JM |
4854 | (num_allocated - decl_die_table_allocated) * sizeof (dw_die_ref)); |
4855 | decl_die_table_allocated = num_allocated; | |
a3f97cbb | 4856 | } |
71dfc51f | 4857 | |
3f76745e JM |
4858 | if (decl_id >= decl_die_table_in_use) |
4859 | decl_die_table_in_use = (decl_id + 1); | |
4860 | ||
4861 | decl_die_table[decl_id] = decl_die; | |
a3f97cbb | 4862 | } |
3f76745e JM |
4863 | \f |
4864 | /* Keep track of the number of spaces used to indent the | |
4865 | output of the debugging routines that print the structure of | |
4866 | the DIE internal representation. */ | |
4867 | static int print_indent; | |
71dfc51f | 4868 | |
3f76745e JM |
4869 | /* Indent the line the number of spaces given by print_indent. */ |
4870 | ||
4871 | static inline void | |
4872 | print_spaces (outfile) | |
4873 | FILE *outfile; | |
4874 | { | |
4875 | fprintf (outfile, "%*s", print_indent, ""); | |
a3f97cbb JW |
4876 | } |
4877 | ||
956d6950 | 4878 | /* Print the information associated with a given DIE, and its children. |
3f76745e | 4879 | This routine is a debugging aid only. */ |
71dfc51f | 4880 | |
a3f97cbb | 4881 | static void |
3f76745e JM |
4882 | print_die (die, outfile) |
4883 | dw_die_ref die; | |
4884 | FILE *outfile; | |
a3f97cbb | 4885 | { |
3f76745e JM |
4886 | register dw_attr_ref a; |
4887 | register dw_die_ref c; | |
71dfc51f | 4888 | |
3f76745e | 4889 | print_spaces (outfile); |
2d8b0f3a | 4890 | fprintf (outfile, "DIE %4lu: %s\n", |
3f76745e JM |
4891 | die->die_offset, dwarf_tag_name (die->die_tag)); |
4892 | print_spaces (outfile); | |
2d8b0f3a JL |
4893 | fprintf (outfile, " abbrev id: %lu", die->die_abbrev); |
4894 | fprintf (outfile, " offset: %lu\n", die->die_offset); | |
3f76745e JM |
4895 | |
4896 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
a3f97cbb | 4897 | { |
3f76745e JM |
4898 | print_spaces (outfile); |
4899 | fprintf (outfile, " %s: ", dwarf_attr_name (a->dw_attr)); | |
4900 | ||
a96c67ec | 4901 | switch (AT_class (a)) |
3f76745e JM |
4902 | { |
4903 | case dw_val_class_addr: | |
4904 | fprintf (outfile, "address"); | |
4905 | break; | |
4906 | case dw_val_class_loc: | |
4907 | fprintf (outfile, "location descriptor"); | |
4908 | break; | |
4909 | case dw_val_class_const: | |
a96c67ec | 4910 | fprintf (outfile, "%ld", AT_int (a)); |
3f76745e JM |
4911 | break; |
4912 | case dw_val_class_unsigned_const: | |
a96c67ec | 4913 | fprintf (outfile, "%lu", AT_unsigned (a)); |
3f76745e JM |
4914 | break; |
4915 | case dw_val_class_long_long: | |
2d8b0f3a | 4916 | fprintf (outfile, "constant (%lu,%lu)", |
556273e0 KH |
4917 | a->dw_attr_val.v.val_long_long.hi, |
4918 | a->dw_attr_val.v.val_long_long.low); | |
3f76745e JM |
4919 | break; |
4920 | case dw_val_class_float: | |
4921 | fprintf (outfile, "floating-point constant"); | |
4922 | break; | |
4923 | case dw_val_class_flag: | |
a96c67ec | 4924 | fprintf (outfile, "%u", AT_flag (a)); |
3f76745e JM |
4925 | break; |
4926 | case dw_val_class_die_ref: | |
a96c67ec | 4927 | if (AT_ref (a) != NULL) |
881c6935 | 4928 | { |
1bfb5f8f | 4929 | if (AT_ref (a)->die_symbol) |
881c6935 JM |
4930 | fprintf (outfile, "die -> label: %s", AT_ref (a)->die_symbol); |
4931 | else | |
4932 | fprintf (outfile, "die -> %lu", AT_ref (a)->die_offset); | |
4933 | } | |
3f76745e JM |
4934 | else |
4935 | fprintf (outfile, "die -> <null>"); | |
4936 | break; | |
4937 | case dw_val_class_lbl_id: | |
8b790721 | 4938 | case dw_val_class_lbl_offset: |
a96c67ec | 4939 | fprintf (outfile, "label: %s", AT_lbl (a)); |
3f76745e | 4940 | break; |
3f76745e | 4941 | case dw_val_class_str: |
a96c67ec JM |
4942 | if (AT_string (a) != NULL) |
4943 | fprintf (outfile, "\"%s\"", AT_string (a)); | |
3f76745e JM |
4944 | else |
4945 | fprintf (outfile, "<null>"); | |
4946 | break; | |
e9a25f70 JL |
4947 | default: |
4948 | break; | |
3f76745e JM |
4949 | } |
4950 | ||
4951 | fprintf (outfile, "\n"); | |
4952 | } | |
4953 | ||
4954 | if (die->die_child != NULL) | |
4955 | { | |
4956 | print_indent += 4; | |
4957 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4958 | print_die (c, outfile); | |
71dfc51f | 4959 | |
3f76745e | 4960 | print_indent -= 4; |
a3f97cbb | 4961 | } |
881c6935 JM |
4962 | if (print_indent == 0) |
4963 | fprintf (outfile, "\n"); | |
a3f97cbb JW |
4964 | } |
4965 | ||
3f76745e JM |
4966 | /* Print the contents of the source code line number correspondence table. |
4967 | This routine is a debugging aid only. */ | |
71dfc51f | 4968 | |
3f76745e JM |
4969 | static void |
4970 | print_dwarf_line_table (outfile) | |
4971 | FILE *outfile; | |
a3f97cbb | 4972 | { |
3f76745e JM |
4973 | register unsigned i; |
4974 | register dw_line_info_ref line_info; | |
4975 | ||
4976 | fprintf (outfile, "\n\nDWARF source line information\n"); | |
4977 | for (i = 1; i < line_info_table_in_use; ++i) | |
a3f97cbb | 4978 | { |
3f76745e JM |
4979 | line_info = &line_info_table[i]; |
4980 | fprintf (outfile, "%5d: ", i); | |
4981 | fprintf (outfile, "%-20s", file_table[line_info->dw_file_num]); | |
2d8b0f3a | 4982 | fprintf (outfile, "%6ld", line_info->dw_line_num); |
3f76745e | 4983 | fprintf (outfile, "\n"); |
a3f97cbb | 4984 | } |
3f76745e JM |
4985 | |
4986 | fprintf (outfile, "\n\n"); | |
f37230f0 JM |
4987 | } |
4988 | ||
3f76745e JM |
4989 | /* Print the information collected for a given DIE. */ |
4990 | ||
4991 | void | |
4992 | debug_dwarf_die (die) | |
4993 | dw_die_ref die; | |
4994 | { | |
4995 | print_die (die, stderr); | |
4996 | } | |
4997 | ||
4998 | /* Print all DWARF information collected for the compilation unit. | |
4999 | This routine is a debugging aid only. */ | |
5000 | ||
5001 | void | |
5002 | debug_dwarf () | |
5003 | { | |
5004 | print_indent = 0; | |
5005 | print_die (comp_unit_die, stderr); | |
b2244e22 JW |
5006 | if (! DWARF2_ASM_LINE_DEBUG_INFO) |
5007 | print_dwarf_line_table (stderr); | |
3f76745e JM |
5008 | } |
5009 | \f | |
a96c67ec JM |
5010 | /* We build up the lists of children and attributes by pushing new ones |
5011 | onto the beginning of the list. Reverse the lists for DIE so that | |
5012 | they are in order of addition. */ | |
71dfc51f | 5013 | |
f37230f0 | 5014 | static void |
a96c67ec | 5015 | reverse_die_lists (die) |
3f76745e | 5016 | register dw_die_ref die; |
f37230f0 | 5017 | { |
a96c67ec JM |
5018 | register dw_die_ref c, cp, cn; |
5019 | register dw_attr_ref a, ap, an; | |
71dfc51f | 5020 | |
a96c67ec | 5021 | for (a = die->die_attr, ap = 0; a; a = an) |
7d9d8943 AM |
5022 | { |
5023 | an = a->dw_attr_next; | |
5024 | a->dw_attr_next = ap; | |
5025 | ap = a; | |
a3f97cbb | 5026 | } |
7d9d8943 | 5027 | die->die_attr = ap; |
3f76745e | 5028 | |
7d9d8943 AM |
5029 | for (c = die->die_child, cp = 0; c; c = cn) |
5030 | { | |
5031 | cn = c->die_sib; | |
5032 | c->die_sib = cp; | |
5033 | cp = c; | |
5034 | } | |
5035 | die->die_child = cp; | |
a3f97cbb JW |
5036 | } |
5037 | ||
881c6935 JM |
5038 | /* reverse_die_lists only reverses the single die you pass it. Since |
5039 | we used to reverse all dies in add_sibling_attributes, which runs | |
5040 | through all the dies, it would reverse all the dies. Now, however, | |
5041 | since we don't call reverse_die_lists in add_sibling_attributes, we | |
5042 | need a routine to recursively reverse all the dies. This is that | |
5043 | routine. */ | |
71dfc51f | 5044 | |
7d9d8943 | 5045 | static void |
881c6935 | 5046 | reverse_all_dies (die) |
7d9d8943 | 5047 | register dw_die_ref die; |
a3f97cbb | 5048 | { |
7d9d8943 | 5049 | register dw_die_ref c; |
71dfc51f | 5050 | |
7d9d8943 | 5051 | reverse_die_lists (die); |
3f76745e | 5052 | |
881c6935 JM |
5053 | for (c = die->die_child; c; c = c->die_sib) |
5054 | reverse_all_dies (c); | |
5055 | } | |
5056 | ||
5057 | /* Start a new compilation unit DIE for an include file. OLD_UNIT is | |
5058 | the CU for the enclosing include file, if any. BINCL_DIE is the | |
5059 | DW_TAG_GNU_BINCL DIE that marks the start of the DIEs for this | |
5060 | include file. */ | |
5061 | ||
5062 | static dw_die_ref | |
5063 | push_new_compile_unit (old_unit, bincl_die) | |
5064 | dw_die_ref old_unit, bincl_die; | |
5065 | { | |
5066 | const char *filename = get_AT_string (bincl_die, DW_AT_name); | |
5067 | dw_die_ref new_unit = gen_compile_unit_die (filename); | |
5068 | new_unit->die_sib = old_unit; | |
5069 | return new_unit; | |
5070 | } | |
5071 | ||
5072 | /* Close an include-file CU and reopen the enclosing one. */ | |
5073 | ||
5074 | static dw_die_ref | |
5075 | pop_compile_unit (old_unit) | |
5076 | dw_die_ref old_unit; | |
5077 | { | |
5078 | dw_die_ref new_unit = old_unit->die_sib; | |
5079 | old_unit->die_sib = NULL; | |
5080 | return new_unit; | |
5081 | } | |
5082 | ||
5083 | #define PROCESS(FOO) md5_process_bytes (&(FOO), sizeof (FOO), ctx) | |
5084 | #define PROCESS_STRING(FOO) md5_process_bytes ((FOO), strlen (FOO), ctx) | |
5085 | ||
5086 | /* Calculate the checksum of a location expression. */ | |
5087 | ||
5088 | static inline void | |
5089 | loc_checksum (loc, ctx) | |
5090 | dw_loc_descr_ref loc; | |
5091 | struct md5_ctx *ctx; | |
5092 | { | |
5093 | PROCESS (loc->dw_loc_opc); | |
5094 | PROCESS (loc->dw_loc_oprnd1); | |
5095 | PROCESS (loc->dw_loc_oprnd2); | |
5096 | } | |
5097 | ||
5098 | /* Calculate the checksum of an attribute. */ | |
5099 | ||
5100 | static void | |
5101 | attr_checksum (at, ctx) | |
5102 | dw_attr_ref at; | |
5103 | struct md5_ctx *ctx; | |
5104 | { | |
5105 | dw_loc_descr_ref loc; | |
5106 | rtx r; | |
5107 | ||
5108 | PROCESS (at->dw_attr); | |
5109 | ||
5110 | /* We don't care about differences in file numbering. */ | |
5f632b5e JM |
5111 | if (at->dw_attr == DW_AT_decl_file |
5112 | /* Or that this was compiled with a different compiler snapshot; if | |
5113 | the output is the same, that's what matters. */ | |
5114 | || at->dw_attr == DW_AT_producer) | |
881c6935 JM |
5115 | return; |
5116 | ||
5117 | switch (AT_class (at)) | |
5118 | { | |
5119 | case dw_val_class_const: | |
5120 | PROCESS (at->dw_attr_val.v.val_int); | |
5121 | break; | |
5122 | case dw_val_class_unsigned_const: | |
5123 | PROCESS (at->dw_attr_val.v.val_unsigned); | |
5124 | break; | |
5125 | case dw_val_class_long_long: | |
5126 | PROCESS (at->dw_attr_val.v.val_long_long); | |
5127 | break; | |
5128 | case dw_val_class_float: | |
5129 | PROCESS (at->dw_attr_val.v.val_float); | |
5130 | break; | |
5131 | case dw_val_class_flag: | |
5132 | PROCESS (at->dw_attr_val.v.val_flag); | |
5133 | break; | |
5134 | ||
5135 | case dw_val_class_str: | |
5136 | PROCESS_STRING (AT_string (at)); | |
5137 | break; | |
5138 | case dw_val_class_addr: | |
5139 | r = AT_addr (at); | |
5140 | switch (GET_CODE (r)) | |
5141 | { | |
5142 | case SYMBOL_REF: | |
5143 | PROCESS_STRING (XSTR (r, 0)); | |
5144 | break; | |
5145 | ||
5146 | default: | |
5147 | abort (); | |
5148 | } | |
5149 | break; | |
5150 | ||
5151 | case dw_val_class_loc: | |
5152 | for (loc = AT_loc (at); loc; loc = loc->dw_loc_next) | |
5153 | loc_checksum (loc, ctx); | |
5154 | break; | |
5155 | ||
5156 | case dw_val_class_die_ref: | |
5157 | if (AT_ref (at)->die_offset) | |
5158 | PROCESS (AT_ref (at)->die_offset); | |
5159 | /* FIXME else use target die name or something. */ | |
5160 | ||
5161 | case dw_val_class_fde_ref: | |
5162 | case dw_val_class_lbl_id: | |
5163 | case dw_val_class_lbl_offset: | |
5164 | ||
5165 | default: | |
5166 | break; | |
5167 | } | |
5168 | } | |
5169 | ||
5170 | /* Calculate the checksum of a DIE. */ | |
5171 | ||
5172 | static void | |
5173 | die_checksum (die, ctx) | |
5174 | dw_die_ref die; | |
5175 | struct md5_ctx *ctx; | |
5176 | { | |
5177 | dw_die_ref c; | |
5178 | dw_attr_ref a; | |
5179 | ||
5180 | PROCESS (die->die_tag); | |
5181 | ||
5182 | for (a = die->die_attr; a; a = a->dw_attr_next) | |
5183 | attr_checksum (a, ctx); | |
5184 | ||
5185 | for (c = die->die_child; c; c = c->die_sib) | |
5186 | die_checksum (c, ctx); | |
5187 | } | |
5188 | ||
5189 | #undef PROCESS | |
5190 | #undef PROCESS_STRING | |
5191 | ||
5192 | /* The prefix to attach to symbols on DIEs in the current comdat debug | |
5193 | info section. */ | |
5194 | static char *comdat_symbol_id; | |
5195 | ||
5196 | /* The index of the current symbol within the current comdat CU. */ | |
5197 | static unsigned int comdat_symbol_number; | |
5198 | ||
5199 | /* Calculate the MD5 checksum of the compilation unit DIE UNIT_DIE and its | |
5200 | children, and set comdat_symbol_id accordingly. */ | |
5201 | ||
5202 | static void | |
5203 | compute_section_prefix (unit_die) | |
5204 | dw_die_ref unit_die; | |
5205 | { | |
5206 | char *p, *name; | |
5207 | int i; | |
5208 | unsigned char checksum[16]; | |
5209 | struct md5_ctx ctx; | |
5210 | ||
5211 | md5_init_ctx (&ctx); | |
5212 | die_checksum (unit_die, &ctx); | |
5213 | md5_finish_ctx (&ctx, checksum); | |
5214 | ||
5215 | p = file_name_nondirectory (get_AT_string (unit_die, DW_AT_name)); | |
5216 | name = (char *) alloca (strlen (p) + 64); | |
5217 | sprintf (name, "%s.", p); | |
5218 | ||
5219 | clean_symbol_name (name); | |
5220 | ||
5221 | p = name + strlen (name); | |
5222 | for (i = 0; i < 4; ++i) | |
5223 | { | |
5224 | sprintf (p, "%.2x", checksum[i]); | |
5225 | p += 2; | |
5226 | } | |
5227 | ||
5228 | comdat_symbol_id = unit_die->die_symbol = xstrdup (name); | |
5229 | comdat_symbol_number = 0; | |
5230 | } | |
5231 | ||
5232 | /* Returns nonzero iff DIE represents a type, in the sense of TYPE_P. */ | |
5233 | ||
5234 | static int | |
5235 | is_type_die (die) | |
5236 | dw_die_ref die; | |
5237 | { | |
5238 | switch (die->die_tag) | |
5239 | { | |
5240 | case DW_TAG_array_type: | |
5241 | case DW_TAG_class_type: | |
5242 | case DW_TAG_enumeration_type: | |
5243 | case DW_TAG_pointer_type: | |
5244 | case DW_TAG_reference_type: | |
5245 | case DW_TAG_string_type: | |
5246 | case DW_TAG_structure_type: | |
5247 | case DW_TAG_subroutine_type: | |
5248 | case DW_TAG_union_type: | |
5249 | case DW_TAG_ptr_to_member_type: | |
5250 | case DW_TAG_set_type: | |
5251 | case DW_TAG_subrange_type: | |
5252 | case DW_TAG_base_type: | |
5253 | case DW_TAG_const_type: | |
5254 | case DW_TAG_file_type: | |
5255 | case DW_TAG_packed_type: | |
5256 | case DW_TAG_volatile_type: | |
5257 | return 1; | |
5258 | default: | |
5259 | return 0; | |
5260 | } | |
5261 | } | |
5262 | ||
5263 | /* Returns 1 iff C is the sort of DIE that should go into a COMDAT CU. | |
5264 | Basically, we want to choose the bits that are likely to be shared between | |
5265 | compilations (types) and leave out the bits that are specific to individual | |
5266 | compilations (functions). */ | |
5267 | ||
5268 | static int | |
5269 | is_comdat_die (c) | |
5270 | dw_die_ref c; | |
5271 | { | |
5272 | #if 1 | |
5273 | /* I think we want to leave base types and __vtbl_ptr_type in the | |
5274 | main CU, as we do for stabs. The advantage is a greater | |
5275 | likelihood of sharing between objects that don't include headers | |
5276 | in the same order (and therefore would put the base types in a | |
5277 | different comdat). jason 8/28/00 */ | |
5278 | if (c->die_tag == DW_TAG_base_type) | |
5279 | return 0; | |
5280 | ||
5281 | if (c->die_tag == DW_TAG_pointer_type | |
5282 | || c->die_tag == DW_TAG_reference_type | |
5283 | || c->die_tag == DW_TAG_const_type | |
5284 | || c->die_tag == DW_TAG_volatile_type) | |
5285 | { | |
5286 | dw_die_ref t = get_AT_ref (c, DW_AT_type); | |
5287 | return t ? is_comdat_die (t) : 0; | |
5288 | } | |
5289 | #endif | |
5290 | ||
5291 | return is_type_die (c); | |
5292 | } | |
5293 | ||
5294 | /* Returns 1 iff C is the sort of DIE that might be referred to from another | |
5295 | compilation unit. */ | |
5296 | ||
5297 | static int | |
5298 | is_symbol_die (c) | |
5299 | dw_die_ref c; | |
5300 | { | |
5301 | if (is_type_die (c)) | |
5302 | return 1; | |
5303 | if (get_AT (c, DW_AT_declaration) | |
5304 | && ! get_AT (c, DW_AT_specification)) | |
5305 | return 1; | |
5306 | return 0; | |
5307 | } | |
5308 | ||
5309 | static char * | |
5310 | gen_internal_sym () | |
5311 | { | |
5312 | char buf[256]; | |
5313 | static int label_num; | |
5314 | ASM_GENERATE_INTERNAL_LABEL (buf, "LDIE", label_num++); | |
5315 | return xstrdup (buf); | |
5316 | } | |
5317 | ||
5318 | /* Assign symbols to all worthy DIEs under DIE. */ | |
5319 | ||
5320 | static void | |
5321 | assign_symbol_names (die) | |
5322 | register dw_die_ref die; | |
5323 | { | |
5324 | register dw_die_ref c; | |
5325 | ||
5326 | if (is_symbol_die (die)) | |
5327 | { | |
5328 | if (comdat_symbol_id) | |
5329 | { | |
5330 | char *p = alloca (strlen (comdat_symbol_id) + 64); | |
5331 | sprintf (p, "%s.%s.%x", DIE_LABEL_PREFIX, | |
5332 | comdat_symbol_id, comdat_symbol_number++); | |
5333 | die->die_symbol = xstrdup (p); | |
5334 | } | |
5335 | else | |
5336 | die->die_symbol = gen_internal_sym (); | |
5337 | } | |
5338 | ||
5339 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5340 | assign_symbol_names (c); | |
5341 | } | |
5342 | ||
5343 | /* Traverse the DIE (which is always comp_unit_die), and set up | |
5344 | additional compilation units for each of the include files we see | |
5345 | bracketed by BINCL/EINCL. */ | |
5346 | ||
5347 | static void | |
5348 | break_out_includes (die) | |
5349 | register dw_die_ref die; | |
5350 | { | |
5351 | dw_die_ref *ptr; | |
5352 | register dw_die_ref unit = NULL; | |
5353 | limbo_die_node *node; | |
5354 | ||
5355 | for (ptr = &(die->die_child); *ptr; ) | |
5356 | { | |
5357 | register dw_die_ref c = *ptr; | |
5358 | ||
5359 | if (c->die_tag == DW_TAG_GNU_BINCL | |
5360 | || c->die_tag == DW_TAG_GNU_EINCL | |
5361 | || (unit && is_comdat_die (c))) | |
5362 | { | |
5363 | /* This DIE is for a secondary CU; remove it from the main one. */ | |
5364 | *ptr = c->die_sib; | |
5365 | ||
5366 | if (c->die_tag == DW_TAG_GNU_BINCL) | |
5367 | { | |
5368 | unit = push_new_compile_unit (unit, c); | |
5369 | free_die (c); | |
5370 | } | |
5371 | else if (c->die_tag == DW_TAG_GNU_EINCL) | |
5372 | { | |
5373 | unit = pop_compile_unit (unit); | |
5374 | free_die (c); | |
5375 | } | |
5376 | else | |
5377 | add_child_die (unit, c); | |
5378 | } | |
5379 | else | |
5380 | { | |
5381 | /* Leave this DIE in the main CU. */ | |
5382 | ptr = &(c->die_sib); | |
5383 | continue; | |
5384 | } | |
5385 | } | |
5386 | ||
5387 | #if 0 | |
5388 | /* We can only use this in debugging, since the frontend doesn't check | |
5389 | to make sure that we leave every include file we enter. */ | |
5390 | if (unit != NULL) | |
5391 | abort (); | |
5392 | #endif | |
5393 | ||
5394 | assign_symbol_names (die); | |
5395 | for (node = limbo_die_list; node; node = node->next) | |
5396 | { | |
5397 | compute_section_prefix (node->die); | |
5398 | assign_symbol_names (node->die); | |
5399 | } | |
5400 | } | |
5401 | ||
5402 | /* Traverse the DIE and add a sibling attribute if it may have the | |
5403 | effect of speeding up access to siblings. To save some space, | |
5404 | avoid generating sibling attributes for DIE's without children. */ | |
5405 | ||
5406 | static void | |
5407 | add_sibling_attributes (die) | |
5408 | register dw_die_ref die; | |
5409 | { | |
5410 | register dw_die_ref c; | |
5411 | ||
5412 | if (die->die_tag != DW_TAG_compile_unit | |
5413 | && die->die_sib && die->die_child != NULL) | |
7d9d8943 AM |
5414 | /* Add the sibling link to the front of the attribute list. */ |
5415 | add_AT_die_ref (die, DW_AT_sibling, die->die_sib); | |
5416 | ||
5417 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5418 | add_sibling_attributes (c); | |
5419 | } | |
5420 | ||
5421 | /* The format of each DIE (and its attribute value pairs) | |
5422 | is encoded in an abbreviation table. This routine builds the | |
5423 | abbreviation table and assigns a unique abbreviation id for | |
5424 | each abbreviation entry. The children of each die are visited | |
5425 | recursively. */ | |
5426 | ||
5427 | static void | |
5428 | build_abbrev_table (die) | |
5429 | register dw_die_ref die; | |
5430 | { | |
5431 | register unsigned long abbrev_id; | |
5432 | register unsigned long n_alloc; | |
5433 | register dw_die_ref c; | |
5434 | register dw_attr_ref d_attr, a_attr; | |
881c6935 JM |
5435 | |
5436 | /* Scan the DIE references, and mark as external any that refer to | |
1bfb5f8f | 5437 | DIEs from other CUs (i.e. those which are not marked). */ |
881c6935 JM |
5438 | for (d_attr = die->die_attr; d_attr; d_attr = d_attr->dw_attr_next) |
5439 | { | |
5440 | if (AT_class (d_attr) == dw_val_class_die_ref | |
1bfb5f8f | 5441 | && AT_ref (d_attr)->die_mark == 0) |
881c6935 JM |
5442 | { |
5443 | if (AT_ref (d_attr)->die_symbol == 0) | |
5444 | abort (); | |
5445 | set_AT_ref_external (d_attr, 1); | |
5446 | } | |
5447 | } | |
5448 | ||
7d9d8943 AM |
5449 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) |
5450 | { | |
5451 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
5452 | ||
5453 | if (abbrev->die_tag == die->die_tag) | |
5454 | { | |
5455 | if ((abbrev->die_child != NULL) == (die->die_child != NULL)) | |
5456 | { | |
5457 | a_attr = abbrev->die_attr; | |
5458 | d_attr = die->die_attr; | |
5459 | ||
5460 | while (a_attr != NULL && d_attr != NULL) | |
5461 | { | |
5462 | if ((a_attr->dw_attr != d_attr->dw_attr) | |
5463 | || (value_format (a_attr) != value_format (d_attr))) | |
5464 | break; | |
5465 | ||
5466 | a_attr = a_attr->dw_attr_next; | |
5467 | d_attr = d_attr->dw_attr_next; | |
5468 | } | |
5469 | ||
5470 | if (a_attr == NULL && d_attr == NULL) | |
5471 | break; | |
5472 | } | |
5473 | } | |
5474 | } | |
5475 | ||
5476 | if (abbrev_id >= abbrev_die_table_in_use) | |
5477 | { | |
5478 | if (abbrev_die_table_in_use >= abbrev_die_table_allocated) | |
5479 | { | |
5480 | n_alloc = abbrev_die_table_allocated + ABBREV_DIE_TABLE_INCREMENT; | |
556273e0 | 5481 | abbrev_die_table |
7d9d8943 AM |
5482 | = (dw_die_ref *) xrealloc (abbrev_die_table, |
5483 | sizeof (dw_die_ref) * n_alloc); | |
5484 | ||
961192e1 | 5485 | memset ((char *) &abbrev_die_table[abbrev_die_table_allocated], 0, |
7d9d8943 AM |
5486 | (n_alloc - abbrev_die_table_allocated) * sizeof (dw_die_ref)); |
5487 | abbrev_die_table_allocated = n_alloc; | |
5488 | } | |
5489 | ||
5490 | ++abbrev_die_table_in_use; | |
5491 | abbrev_die_table[abbrev_id] = die; | |
5492 | } | |
5493 | ||
5494 | die->die_abbrev = abbrev_id; | |
5495 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
5496 | build_abbrev_table (c); | |
5497 | } | |
5498 | \f | |
5499 | /* Return the size of a string, including the null byte. | |
5500 | ||
5501 | This used to treat backslashes as escapes, and hence they were not included | |
5502 | in the count. However, that conflicts with what ASM_OUTPUT_ASCII does, | |
5503 | which treats a backslash as a backslash, escaping it if necessary, and hence | |
5504 | we must include them in the count. */ | |
5505 | ||
5506 | static unsigned long | |
5507 | size_of_string (str) | |
5508 | register const char *str; | |
5509 | { | |
5510 | return strlen (str) + 1; | |
3f76745e JM |
5511 | } |
5512 | ||
5513 | /* Return the power-of-two number of bytes necessary to represent VALUE. */ | |
5514 | ||
5515 | static int | |
5516 | constant_size (value) | |
5517 | long unsigned value; | |
5518 | { | |
5519 | int log; | |
5520 | ||
5521 | if (value == 0) | |
5522 | log = 0; | |
a3f97cbb | 5523 | else |
3f76745e | 5524 | log = floor_log2 (value); |
71dfc51f | 5525 | |
3f76745e JM |
5526 | log = log / 8; |
5527 | log = 1 << (floor_log2 (log) + 1); | |
5528 | ||
5529 | return log; | |
a3f97cbb JW |
5530 | } |
5531 | ||
3f76745e JM |
5532 | /* Return the size of a DIE, as it is represented in the |
5533 | .debug_info section. */ | |
71dfc51f | 5534 | |
3f76745e JM |
5535 | static unsigned long |
5536 | size_of_die (die) | |
a3f97cbb JW |
5537 | register dw_die_ref die; |
5538 | { | |
3f76745e | 5539 | register unsigned long size = 0; |
a3f97cbb | 5540 | register dw_attr_ref a; |
71dfc51f | 5541 | |
3f76745e | 5542 | size += size_of_uleb128 (die->die_abbrev); |
a3f97cbb JW |
5543 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
5544 | { | |
a96c67ec | 5545 | switch (AT_class (a)) |
a3f97cbb JW |
5546 | { |
5547 | case dw_val_class_addr: | |
a1a4189d | 5548 | size += DWARF2_ADDR_SIZE; |
a3f97cbb JW |
5549 | break; |
5550 | case dw_val_class_loc: | |
3f76745e | 5551 | { |
a96c67ec | 5552 | register unsigned long lsize = size_of_locs (AT_loc (a)); |
71dfc51f | 5553 | |
3f76745e JM |
5554 | /* Block length. */ |
5555 | size += constant_size (lsize); | |
5556 | size += lsize; | |
5557 | } | |
a3f97cbb JW |
5558 | break; |
5559 | case dw_val_class_const: | |
25dd13ec | 5560 | size += size_of_sleb128 (AT_int (a)); |
a3f97cbb JW |
5561 | break; |
5562 | case dw_val_class_unsigned_const: | |
a96c67ec | 5563 | size += constant_size (AT_unsigned (a)); |
a3f97cbb | 5564 | break; |
469ac993 | 5565 | case dw_val_class_long_long: |
3f76745e | 5566 | size += 1 + 8; /* block */ |
469ac993 JM |
5567 | break; |
5568 | case dw_val_class_float: | |
3f76745e | 5569 | size += 1 + a->dw_attr_val.v.val_float.length * 4; /* block */ |
a3f97cbb JW |
5570 | break; |
5571 | case dw_val_class_flag: | |
3f76745e | 5572 | size += 1; |
a3f97cbb JW |
5573 | break; |
5574 | case dw_val_class_die_ref: | |
3f76745e | 5575 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
5576 | break; |
5577 | case dw_val_class_fde_ref: | |
3f76745e | 5578 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
5579 | break; |
5580 | case dw_val_class_lbl_id: | |
a1a4189d | 5581 | size += DWARF2_ADDR_SIZE; |
3f76745e | 5582 | break; |
8b790721 | 5583 | case dw_val_class_lbl_offset: |
3f76745e JM |
5584 | size += DWARF_OFFSET_SIZE; |
5585 | break; | |
5586 | case dw_val_class_str: | |
a96c67ec | 5587 | size += size_of_string (AT_string (a)); |
3f76745e JM |
5588 | break; |
5589 | default: | |
5590 | abort (); | |
5591 | } | |
a3f97cbb | 5592 | } |
3f76745e JM |
5593 | |
5594 | return size; | |
a3f97cbb JW |
5595 | } |
5596 | ||
956d6950 | 5597 | /* Size the debugging information associated with a given DIE. |
3f76745e JM |
5598 | Visits the DIE's children recursively. Updates the global |
5599 | variable next_die_offset, on each time through. Uses the | |
956d6950 | 5600 | current value of next_die_offset to update the die_offset |
3f76745e | 5601 | field in each DIE. */ |
71dfc51f | 5602 | |
a3f97cbb | 5603 | static void |
3f76745e JM |
5604 | calc_die_sizes (die) |
5605 | dw_die_ref die; | |
a3f97cbb | 5606 | { |
3f76745e JM |
5607 | register dw_die_ref c; |
5608 | die->die_offset = next_die_offset; | |
5609 | next_die_offset += size_of_die (die); | |
71dfc51f | 5610 | |
3f76745e JM |
5611 | for (c = die->die_child; c != NULL; c = c->die_sib) |
5612 | calc_die_sizes (c); | |
71dfc51f | 5613 | |
3f76745e JM |
5614 | if (die->die_child != NULL) |
5615 | /* Count the null byte used to terminate sibling lists. */ | |
5616 | next_die_offset += 1; | |
a3f97cbb JW |
5617 | } |
5618 | ||
1bfb5f8f | 5619 | /* Set the marks for a die and its children. We do this so |
881c6935 | 5620 | that we know whether or not a reference needs to use FORM_ref_addr; only |
1bfb5f8f JM |
5621 | DIEs in the same CU will be marked. We used to clear out the offset |
5622 | and use that as the flag, but ran into ordering problems. */ | |
881c6935 JM |
5623 | |
5624 | static void | |
1bfb5f8f | 5625 | mark_dies (die) |
881c6935 JM |
5626 | dw_die_ref die; |
5627 | { | |
5628 | register dw_die_ref c; | |
1bfb5f8f JM |
5629 | die->die_mark = 1; |
5630 | for (c = die->die_child; c; c = c->die_sib) | |
5631 | mark_dies (c); | |
5632 | } | |
5633 | ||
5634 | /* Clear the marks for a die and its children. */ | |
5635 | ||
5636 | static void | |
5637 | unmark_dies (die) | |
5638 | dw_die_ref die; | |
5639 | { | |
5640 | register dw_die_ref c; | |
5641 | die->die_mark = 0; | |
881c6935 | 5642 | for (c = die->die_child; c; c = c->die_sib) |
1bfb5f8f | 5643 | unmark_dies (c); |
881c6935 JM |
5644 | } |
5645 | ||
3f76745e JM |
5646 | /* Return the size of the line information prolog generated for the |
5647 | compilation unit. */ | |
469ac993 | 5648 | |
3f76745e JM |
5649 | static unsigned long |
5650 | size_of_line_prolog () | |
a94dbf2c | 5651 | { |
3f76745e JM |
5652 | register unsigned long size; |
5653 | register unsigned long ft_index; | |
a94dbf2c | 5654 | |
3f76745e | 5655 | size = DWARF_LINE_PROLOG_HEADER_SIZE; |
469ac993 | 5656 | |
3f76745e JM |
5657 | /* Count the size of the table giving number of args for each |
5658 | standard opcode. */ | |
5659 | size += DWARF_LINE_OPCODE_BASE - 1; | |
71dfc51f | 5660 | |
3f76745e | 5661 | /* Include directory table is empty (at present). Count only the |
38e01259 | 5662 | null byte used to terminate the table. */ |
3f76745e | 5663 | size += 1; |
71dfc51f | 5664 | |
3f76745e JM |
5665 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
5666 | { | |
5667 | /* File name entry. */ | |
5668 | size += size_of_string (file_table[ft_index]); | |
a94dbf2c | 5669 | |
3f76745e JM |
5670 | /* Include directory index. */ |
5671 | size += size_of_uleb128 (0); | |
a94dbf2c | 5672 | |
3f76745e JM |
5673 | /* Modification time. */ |
5674 | size += size_of_uleb128 (0); | |
71dfc51f | 5675 | |
3f76745e JM |
5676 | /* File length in bytes. */ |
5677 | size += size_of_uleb128 (0); | |
a94dbf2c | 5678 | } |
71dfc51f | 5679 | |
3f76745e JM |
5680 | /* Count the file table terminator. */ |
5681 | size += 1; | |
5682 | return size; | |
a94dbf2c JM |
5683 | } |
5684 | ||
3f76745e JM |
5685 | /* Return the size of the .debug_pubnames table generated for the |
5686 | compilation unit. */ | |
a94dbf2c | 5687 | |
3f76745e JM |
5688 | static unsigned long |
5689 | size_of_pubnames () | |
a94dbf2c | 5690 | { |
3f76745e JM |
5691 | register unsigned long size; |
5692 | register unsigned i; | |
469ac993 | 5693 | |
3f76745e JM |
5694 | size = DWARF_PUBNAMES_HEADER_SIZE; |
5695 | for (i = 0; i < pubname_table_in_use; ++i) | |
a94dbf2c | 5696 | { |
3f76745e JM |
5697 | register pubname_ref p = &pubname_table[i]; |
5698 | size += DWARF_OFFSET_SIZE + size_of_string (p->name); | |
a94dbf2c JM |
5699 | } |
5700 | ||
3f76745e JM |
5701 | size += DWARF_OFFSET_SIZE; |
5702 | return size; | |
a94dbf2c JM |
5703 | } |
5704 | ||
956d6950 | 5705 | /* Return the size of the information in the .debug_aranges section. */ |
469ac993 | 5706 | |
3f76745e JM |
5707 | static unsigned long |
5708 | size_of_aranges () | |
469ac993 | 5709 | { |
3f76745e | 5710 | register unsigned long size; |
469ac993 | 5711 | |
3f76745e | 5712 | size = DWARF_ARANGES_HEADER_SIZE; |
469ac993 | 5713 | |
3f76745e | 5714 | /* Count the address/length pair for this compilation unit. */ |
a1a4189d JB |
5715 | size += 2 * DWARF2_ADDR_SIZE; |
5716 | size += 2 * DWARF2_ADDR_SIZE * arange_table_in_use; | |
469ac993 | 5717 | |
3f76745e | 5718 | /* Count the two zero words used to terminated the address range table. */ |
a1a4189d | 5719 | size += 2 * DWARF2_ADDR_SIZE; |
3f76745e JM |
5720 | return size; |
5721 | } | |
5722 | \f | |
5723 | /* Select the encoding of an attribute value. */ | |
5724 | ||
5725 | static enum dwarf_form | |
a96c67ec JM |
5726 | value_format (a) |
5727 | dw_attr_ref a; | |
3f76745e | 5728 | { |
a96c67ec | 5729 | switch (a->dw_attr_val.val_class) |
469ac993 | 5730 | { |
3f76745e JM |
5731 | case dw_val_class_addr: |
5732 | return DW_FORM_addr; | |
5733 | case dw_val_class_loc: | |
a96c67ec | 5734 | switch (constant_size (size_of_locs (AT_loc (a)))) |
469ac993 | 5735 | { |
3f76745e JM |
5736 | case 1: |
5737 | return DW_FORM_block1; | |
5738 | case 2: | |
5739 | return DW_FORM_block2; | |
469ac993 JM |
5740 | default: |
5741 | abort (); | |
5742 | } | |
3f76745e | 5743 | case dw_val_class_const: |
25dd13ec | 5744 | return DW_FORM_sdata; |
3f76745e | 5745 | case dw_val_class_unsigned_const: |
a96c67ec | 5746 | switch (constant_size (AT_unsigned (a))) |
3f76745e JM |
5747 | { |
5748 | case 1: | |
5749 | return DW_FORM_data1; | |
5750 | case 2: | |
5751 | return DW_FORM_data2; | |
5752 | case 4: | |
5753 | return DW_FORM_data4; | |
5754 | case 8: | |
5755 | return DW_FORM_data8; | |
5756 | default: | |
5757 | abort (); | |
5758 | } | |
5759 | case dw_val_class_long_long: | |
5760 | return DW_FORM_block1; | |
5761 | case dw_val_class_float: | |
5762 | return DW_FORM_block1; | |
5763 | case dw_val_class_flag: | |
5764 | return DW_FORM_flag; | |
5765 | case dw_val_class_die_ref: | |
881c6935 JM |
5766 | if (AT_ref_external (a)) |
5767 | return DW_FORM_ref_addr; | |
5768 | else | |
5769 | return DW_FORM_ref; | |
3f76745e JM |
5770 | case dw_val_class_fde_ref: |
5771 | return DW_FORM_data; | |
5772 | case dw_val_class_lbl_id: | |
5773 | return DW_FORM_addr; | |
8b790721 | 5774 | case dw_val_class_lbl_offset: |
3f76745e JM |
5775 | return DW_FORM_data; |
5776 | case dw_val_class_str: | |
5777 | return DW_FORM_string; | |
469ac993 JM |
5778 | default: |
5779 | abort (); | |
5780 | } | |
a94dbf2c JM |
5781 | } |
5782 | ||
3f76745e | 5783 | /* Output the encoding of an attribute value. */ |
469ac993 | 5784 | |
3f76745e | 5785 | static void |
a96c67ec JM |
5786 | output_value_format (a) |
5787 | dw_attr_ref a; | |
a94dbf2c | 5788 | { |
a96c67ec | 5789 | enum dwarf_form form = value_format (a); |
71dfc51f | 5790 | |
3f76745e | 5791 | output_uleb128 (form); |
c5cec899 | 5792 | if (flag_debug_asm) |
3f76745e | 5793 | fprintf (asm_out_file, " (%s)", dwarf_form_name (form)); |
141719a8 | 5794 | |
3f76745e JM |
5795 | fputc ('\n', asm_out_file); |
5796 | } | |
469ac993 | 5797 | |
3f76745e JM |
5798 | /* Output the .debug_abbrev section which defines the DIE abbreviation |
5799 | table. */ | |
469ac993 | 5800 | |
3f76745e JM |
5801 | static void |
5802 | output_abbrev_section () | |
5803 | { | |
5804 | unsigned long abbrev_id; | |
71dfc51f | 5805 | |
3f76745e JM |
5806 | dw_attr_ref a_attr; |
5807 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) | |
5808 | { | |
5809 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 5810 | |
3f76745e | 5811 | output_uleb128 (abbrev_id); |
c5cec899 | 5812 | if (flag_debug_asm) |
3f76745e | 5813 | fprintf (asm_out_file, " (abbrev code)"); |
469ac993 | 5814 | |
3f76745e JM |
5815 | fputc ('\n', asm_out_file); |
5816 | output_uleb128 (abbrev->die_tag); | |
c5cec899 | 5817 | if (flag_debug_asm) |
3f76745e JM |
5818 | fprintf (asm_out_file, " (TAG: %s)", |
5819 | dwarf_tag_name (abbrev->die_tag)); | |
71dfc51f | 5820 | |
3f76745e | 5821 | fputc ('\n', asm_out_file); |
e8638df0 | 5822 | fprintf (asm_out_file, "%s0x%x", ASM_BYTE_OP, |
3f76745e | 5823 | abbrev->die_child != NULL ? DW_children_yes : DW_children_no); |
469ac993 | 5824 | |
c5cec899 | 5825 | if (flag_debug_asm) |
3f76745e JM |
5826 | fprintf (asm_out_file, "\t%s %s", |
5827 | ASM_COMMENT_START, | |
5828 | (abbrev->die_child != NULL | |
5829 | ? "DW_children_yes" : "DW_children_no")); | |
5830 | ||
5831 | fputc ('\n', asm_out_file); | |
5832 | ||
5833 | for (a_attr = abbrev->die_attr; a_attr != NULL; | |
5834 | a_attr = a_attr->dw_attr_next) | |
5835 | { | |
5836 | output_uleb128 (a_attr->dw_attr); | |
c5cec899 | 5837 | if (flag_debug_asm) |
3f76745e JM |
5838 | fprintf (asm_out_file, " (%s)", |
5839 | dwarf_attr_name (a_attr->dw_attr)); | |
5840 | ||
5841 | fputc ('\n', asm_out_file); | |
a96c67ec | 5842 | output_value_format (a_attr); |
469ac993 | 5843 | } |
469ac993 | 5844 | |
e8638df0 | 5845 | fprintf (asm_out_file, "%s0,0\n", ASM_BYTE_OP); |
469ac993 | 5846 | } |
81f374eb HPN |
5847 | |
5848 | /* Terminate the table. */ | |
e8638df0 | 5849 | fprintf (asm_out_file, "%s0\n", ASM_BYTE_OP); |
a94dbf2c JM |
5850 | } |
5851 | ||
881c6935 JM |
5852 | /* Output a symbol we can use to refer to this DIE from another CU. */ |
5853 | ||
5854 | static inline void | |
5855 | output_die_symbol (die) | |
5856 | register dw_die_ref die; | |
5857 | { | |
5858 | char *sym = die->die_symbol; | |
5859 | ||
5860 | if (sym == 0) | |
5861 | return; | |
5862 | ||
5863 | if (strncmp (sym, DIE_LABEL_PREFIX, sizeof (DIE_LABEL_PREFIX) - 1) == 0) | |
5864 | /* We make these global, not weak; if the target doesn't support | |
5865 | .linkonce, it doesn't support combining the sections, so debugging | |
5866 | will break. */ | |
5867 | ASM_GLOBALIZE_LABEL (asm_out_file, sym); | |
5868 | ASM_OUTPUT_LABEL (asm_out_file, sym); | |
5869 | } | |
5870 | ||
5871 | /* Output a symbolic (i.e. FORM_ref_addr) reference to TARGET_DIE. */ | |
5872 | ||
5873 | static inline void | |
5874 | output_symbolic_ref (target_die) | |
5875 | dw_die_ref target_die; | |
5876 | { | |
5877 | char *sym = target_die->die_symbol; | |
5878 | ||
5879 | if (sym == 0) | |
5880 | abort (); | |
5881 | ||
5882 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, sym); | |
5883 | } | |
5884 | ||
3f76745e JM |
5885 | /* Output the DIE and its attributes. Called recursively to generate |
5886 | the definitions of each child DIE. */ | |
71dfc51f | 5887 | |
a3f97cbb | 5888 | static void |
3f76745e JM |
5889 | output_die (die) |
5890 | register dw_die_ref die; | |
a3f97cbb | 5891 | { |
3f76745e JM |
5892 | register dw_attr_ref a; |
5893 | register dw_die_ref c; | |
3f76745e | 5894 | register unsigned long size; |
a94dbf2c | 5895 | |
881c6935 JM |
5896 | /* If someone in another CU might refer to us, set up a symbol for |
5897 | them to point to. */ | |
5898 | if (die->die_symbol) | |
5899 | output_die_symbol (die); | |
5900 | ||
3f76745e | 5901 | output_uleb128 (die->die_abbrev); |
c5cec899 | 5902 | if (flag_debug_asm) |
2d8b0f3a | 5903 | fprintf (asm_out_file, " (DIE (0x%lx) %s)", |
3f76745e | 5904 | die->die_offset, dwarf_tag_name (die->die_tag)); |
a94dbf2c | 5905 | |
3f76745e | 5906 | fputc ('\n', asm_out_file); |
a94dbf2c | 5907 | |
3f76745e | 5908 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
a3f97cbb | 5909 | { |
a96c67ec | 5910 | switch (AT_class (a)) |
3f76745e JM |
5911 | { |
5912 | case dw_val_class_addr: | |
a96c67ec | 5913 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, AT_addr (a)); |
3f76745e | 5914 | break; |
a3f97cbb | 5915 | |
3f76745e | 5916 | case dw_val_class_loc: |
a96c67ec | 5917 | size = size_of_locs (AT_loc (a)); |
71dfc51f | 5918 | |
3f76745e JM |
5919 | /* Output the block length for this list of location operations. */ |
5920 | switch (constant_size (size)) | |
5921 | { | |
5922 | case 1: | |
5923 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, size); | |
5924 | break; | |
5925 | case 2: | |
5926 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, size); | |
5927 | break; | |
5928 | default: | |
5929 | abort (); | |
5930 | } | |
71dfc51f | 5931 | |
c5cec899 | 5932 | if (flag_debug_asm) |
3f76745e JM |
5933 | fprintf (asm_out_file, "\t%s %s", |
5934 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
71dfc51f | 5935 | |
3f76745e | 5936 | fputc ('\n', asm_out_file); |
71dfc51f | 5937 | |
7d9d8943 | 5938 | output_loc_sequence (AT_loc (a)); |
a3f97cbb | 5939 | break; |
3f76745e JM |
5940 | |
5941 | case dw_val_class_const: | |
25dd13ec JW |
5942 | /* ??? It would be slightly more efficient to use a scheme like is |
5943 | used for unsigned constants below, but gdb 4.x does not sign | |
5944 | extend. Gdb 5.x does sign extend. */ | |
5945 | output_sleb128 (AT_int (a)); | |
a3f97cbb | 5946 | break; |
3f76745e JM |
5947 | |
5948 | case dw_val_class_unsigned_const: | |
a96c67ec | 5949 | switch (constant_size (AT_unsigned (a))) |
3f76745e JM |
5950 | { |
5951 | case 1: | |
a96c67ec | 5952 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
5953 | break; |
5954 | case 2: | |
a96c67ec | 5955 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
5956 | break; |
5957 | case 4: | |
a96c67ec | 5958 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
5959 | break; |
5960 | case 8: | |
21217bd0 | 5961 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
5962 | break; |
5963 | default: | |
5964 | abort (); | |
5965 | } | |
a3f97cbb | 5966 | break; |
3f76745e JM |
5967 | |
5968 | case dw_val_class_long_long: | |
5969 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 8); | |
c5cec899 | 5970 | if (flag_debug_asm) |
3f76745e | 5971 | fprintf (asm_out_file, "\t%s %s", |
556273e0 | 5972 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); |
3f76745e JM |
5973 | |
5974 | fputc ('\n', asm_out_file); | |
21217bd0 JW |
5975 | ASM_OUTPUT_DWARF_CONST_DOUBLE (asm_out_file, |
5976 | a->dw_attr_val.v.val_long_long.hi, | |
5977 | a->dw_attr_val.v.val_long_long.low); | |
3f76745e | 5978 | |
c5cec899 | 5979 | if (flag_debug_asm) |
3f76745e JM |
5980 | fprintf (asm_out_file, |
5981 | "\t%s long long constant", ASM_COMMENT_START); | |
556273e0 | 5982 | |
3f76745e | 5983 | fputc ('\n', asm_out_file); |
a3f97cbb | 5984 | break; |
3f76745e JM |
5985 | |
5986 | case dw_val_class_float: | |
c84e2712 KG |
5987 | { |
5988 | register unsigned int i; | |
5989 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5990 | a->dw_attr_val.v.val_float.length * 4); | |
5991 | if (flag_debug_asm) | |
5992 | fprintf (asm_out_file, "\t%s %s", | |
5993 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5994 | ||
5995 | fputc ('\n', asm_out_file); | |
5996 | for (i = 0; i < a->dw_attr_val.v.val_float.length; ++i) | |
5997 | { | |
5998 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, | |
5999 | a->dw_attr_val.v.val_float.array[i]); | |
6000 | if (flag_debug_asm) | |
6001 | fprintf (asm_out_file, "\t%s fp constant word %u", | |
6002 | ASM_COMMENT_START, i); | |
6003 | ||
6004 | fputc ('\n', asm_out_file); | |
6005 | } | |
556273e0 | 6006 | break; |
c84e2712 | 6007 | } |
3f76745e JM |
6008 | |
6009 | case dw_val_class_flag: | |
a96c67ec | 6010 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, AT_flag (a)); |
a3f97cbb | 6011 | break; |
3f76745e JM |
6012 | |
6013 | case dw_val_class_die_ref: | |
881c6935 JM |
6014 | if (AT_ref_external (a)) |
6015 | output_symbolic_ref (AT_ref (a)); | |
6016 | else | |
6017 | ASM_OUTPUT_DWARF_DATA (asm_out_file, AT_ref (a)->die_offset); | |
a3f97cbb | 6018 | break; |
3f76745e JM |
6019 | |
6020 | case dw_val_class_fde_ref: | |
a6ab3aad JM |
6021 | { |
6022 | char l1[20]; | |
6023 | ASM_GENERATE_INTERNAL_LABEL | |
6024 | (l1, FDE_AFTER_SIZE_LABEL, a->dw_attr_val.v.val_fde_index * 2); | |
6025 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, l1); | |
6026 | fprintf (asm_out_file, " - %d", DWARF_OFFSET_SIZE); | |
6027 | } | |
a3f97cbb | 6028 | break; |
a3f97cbb | 6029 | |
3f76745e | 6030 | case dw_val_class_lbl_id: |
a96c67ec | 6031 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, AT_lbl (a)); |
3f76745e | 6032 | break; |
71dfc51f | 6033 | |
8b790721 | 6034 | case dw_val_class_lbl_offset: |
a96c67ec | 6035 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, AT_lbl (a)); |
3f76745e | 6036 | break; |
a3f97cbb | 6037 | |
3f76745e | 6038 | case dw_val_class_str: |
8d4e65a6 | 6039 | if (flag_debug_asm) |
a96c67ec | 6040 | ASM_OUTPUT_DWARF_STRING (asm_out_file, AT_string (a)); |
8d4e65a6 | 6041 | else |
a96c67ec JM |
6042 | ASM_OUTPUT_ASCII (asm_out_file, AT_string (a), |
6043 | (int) strlen (AT_string (a)) + 1); | |
3f76745e | 6044 | break; |
b2932ae5 | 6045 | |
3f76745e JM |
6046 | default: |
6047 | abort (); | |
6048 | } | |
a94dbf2c | 6049 | |
a96c67ec JM |
6050 | if (AT_class (a) != dw_val_class_loc |
6051 | && AT_class (a) != dw_val_class_long_long | |
6052 | && AT_class (a) != dw_val_class_float) | |
3f76745e | 6053 | { |
c5cec899 | 6054 | if (flag_debug_asm) |
3f76745e JM |
6055 | fprintf (asm_out_file, "\t%s %s", |
6056 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
b2932ae5 | 6057 | |
3f76745e JM |
6058 | fputc ('\n', asm_out_file); |
6059 | } | |
6060 | } | |
71dfc51f | 6061 | |
3f76745e JM |
6062 | for (c = die->die_child; c != NULL; c = c->die_sib) |
6063 | output_die (c); | |
71dfc51f | 6064 | |
3f76745e | 6065 | if (die->die_child != NULL) |
7e23cb16 | 6066 | { |
556273e0 | 6067 | /* Add null byte to terminate sibling list. */ |
3f76745e | 6068 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); |
c5cec899 | 6069 | if (flag_debug_asm) |
2d8b0f3a | 6070 | fprintf (asm_out_file, "\t%s end of children of DIE 0x%lx", |
3f76745e JM |
6071 | ASM_COMMENT_START, die->die_offset); |
6072 | ||
7e23cb16 JM |
6073 | fputc ('\n', asm_out_file); |
6074 | } | |
3f76745e | 6075 | } |
71dfc51f | 6076 | |
3f76745e JM |
6077 | /* Output the compilation unit that appears at the beginning of the |
6078 | .debug_info section, and precedes the DIE descriptions. */ | |
71dfc51f | 6079 | |
3f76745e JM |
6080 | static void |
6081 | output_compilation_unit_header () | |
6082 | { | |
6083 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset - DWARF_OFFSET_SIZE); | |
c5cec899 | 6084 | if (flag_debug_asm) |
3f76745e JM |
6085 | fprintf (asm_out_file, "\t%s Length of Compilation Unit Info.", |
6086 | ASM_COMMENT_START); | |
71dfc51f | 6087 | |
a3f97cbb | 6088 | fputc ('\n', asm_out_file); |
3f76745e | 6089 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
c5cec899 | 6090 | if (flag_debug_asm) |
3f76745e | 6091 | fprintf (asm_out_file, "\t%s DWARF version number", ASM_COMMENT_START); |
71dfc51f | 6092 | |
a3f97cbb | 6093 | fputc ('\n', asm_out_file); |
8b790721 | 6094 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, abbrev_section_label); |
c5cec899 | 6095 | if (flag_debug_asm) |
3f76745e JM |
6096 | fprintf (asm_out_file, "\t%s Offset Into Abbrev. Section", |
6097 | ASM_COMMENT_START); | |
71dfc51f | 6098 | |
a3f97cbb | 6099 | fputc ('\n', asm_out_file); |
a1a4189d | 6100 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF2_ADDR_SIZE); |
c5cec899 | 6101 | if (flag_debug_asm) |
3f76745e | 6102 | fprintf (asm_out_file, "\t%s Pointer Size (in bytes)", ASM_COMMENT_START); |
71dfc51f | 6103 | |
a3f97cbb | 6104 | fputc ('\n', asm_out_file); |
a3f97cbb JW |
6105 | } |
6106 | ||
881c6935 JM |
6107 | /* Output the compilation unit DIE and its children. */ |
6108 | ||
6109 | static void | |
6110 | output_comp_unit (die) | |
6111 | dw_die_ref die; | |
6112 | { | |
ce1cc601 | 6113 | const char *secname; |
881c6935 JM |
6114 | |
6115 | if (die->die_child == 0) | |
6116 | return; | |
6117 | ||
1bfb5f8f JM |
6118 | /* Mark all the DIEs in this CU so we know which get local refs. */ |
6119 | mark_dies (die); | |
6120 | ||
6121 | build_abbrev_table (die); | |
6122 | ||
881c6935 JM |
6123 | /* Initialize the beginning DIE offset - and calculate sizes/offsets. */ |
6124 | next_die_offset = DWARF_COMPILE_UNIT_HEADER_SIZE; | |
6125 | calc_die_sizes (die); | |
6126 | ||
881c6935 JM |
6127 | if (die->die_symbol) |
6128 | { | |
ce1cc601 KG |
6129 | char *tmp = (char *) alloca (strlen (die->die_symbol) + 24); |
6130 | sprintf (tmp, ".gnu.linkonce.wi.%s", die->die_symbol); | |
6131 | secname = tmp; | |
881c6935 JM |
6132 | die->die_symbol = NULL; |
6133 | } | |
6134 | else | |
ce1cc601 | 6135 | secname = (const char *) DEBUG_INFO_SECTION; |
881c6935 JM |
6136 | |
6137 | /* Output debugging information. */ | |
6138 | fputc ('\n', asm_out_file); | |
6139 | ASM_OUTPUT_SECTION (asm_out_file, secname); | |
6140 | output_compilation_unit_header (); | |
6141 | output_die (die); | |
6142 | ||
1bfb5f8f JM |
6143 | /* Leave the marks on the main CU, so we can check them in |
6144 | output_pubnames. */ | |
881c6935 | 6145 | if (die->die_symbol) |
1bfb5f8f | 6146 | unmark_dies (die); |
881c6935 JM |
6147 | } |
6148 | ||
a1d7ffe3 JM |
6149 | /* The DWARF2 pubname for a nested thingy looks like "A::f". The output |
6150 | of decl_printable_name for C++ looks like "A::f(int)". Let's drop the | |
6151 | argument list, and maybe the scope. */ | |
6152 | ||
d560ee52 | 6153 | static const char * |
a1d7ffe3 JM |
6154 | dwarf2_name (decl, scope) |
6155 | tree decl; | |
6156 | int scope; | |
6157 | { | |
6158 | return (*decl_printable_name) (decl, scope ? 1 : 0); | |
6159 | } | |
6160 | ||
d291dd49 | 6161 | /* Add a new entry to .debug_pubnames if appropriate. */ |
71dfc51f | 6162 | |
d291dd49 JM |
6163 | static void |
6164 | add_pubname (decl, die) | |
6165 | tree decl; | |
6166 | dw_die_ref die; | |
6167 | { | |
6168 | pubname_ref p; | |
6169 | ||
6170 | if (! TREE_PUBLIC (decl)) | |
6171 | return; | |
6172 | ||
6173 | if (pubname_table_in_use == pubname_table_allocated) | |
6174 | { | |
6175 | pubname_table_allocated += PUBNAME_TABLE_INCREMENT; | |
6176 | pubname_table = (pubname_ref) xrealloc | |
6177 | (pubname_table, pubname_table_allocated * sizeof (pubname_entry)); | |
6178 | } | |
71dfc51f | 6179 | |
d291dd49 JM |
6180 | p = &pubname_table[pubname_table_in_use++]; |
6181 | p->die = die; | |
a1d7ffe3 JM |
6182 | |
6183 | p->name = xstrdup (dwarf2_name (decl, 1)); | |
d291dd49 JM |
6184 | } |
6185 | ||
a3f97cbb JW |
6186 | /* Output the public names table used to speed up access to externally |
6187 | visible names. For now, only generate entries for externally | |
6188 | visible procedures. */ | |
71dfc51f | 6189 | |
a3f97cbb JW |
6190 | static void |
6191 | output_pubnames () | |
6192 | { | |
d291dd49 | 6193 | register unsigned i; |
71dfc51f RK |
6194 | register unsigned long pubnames_length = size_of_pubnames (); |
6195 | ||
6196 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pubnames_length); | |
6197 | ||
c5cec899 | 6198 | if (flag_debug_asm) |
71dfc51f RK |
6199 | fprintf (asm_out_file, "\t%s Length of Public Names Info.", |
6200 | ASM_COMMENT_START); | |
6201 | ||
a3f97cbb JW |
6202 | fputc ('\n', asm_out_file); |
6203 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
71dfc51f | 6204 | |
c5cec899 | 6205 | if (flag_debug_asm) |
71dfc51f RK |
6206 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
6207 | ||
a3f97cbb | 6208 | fputc ('\n', asm_out_file); |
8b790721 | 6209 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, debug_info_section_label); |
c5cec899 | 6210 | if (flag_debug_asm) |
71dfc51f RK |
6211 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
6212 | ASM_COMMENT_START); | |
6213 | ||
a3f97cbb | 6214 | fputc ('\n', asm_out_file); |
7e23cb16 | 6215 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset); |
c5cec899 | 6216 | if (flag_debug_asm) |
71dfc51f RK |
6217 | fprintf (asm_out_file, "\t%s Compilation Unit Length", ASM_COMMENT_START); |
6218 | ||
a3f97cbb | 6219 | fputc ('\n', asm_out_file); |
d291dd49 | 6220 | for (i = 0; i < pubname_table_in_use; ++i) |
a3f97cbb | 6221 | { |
d291dd49 | 6222 | register pubname_ref pub = &pubname_table[i]; |
71dfc51f | 6223 | |
881c6935 | 6224 | /* We shouldn't see pubnames for DIEs outside of the main CU. */ |
1bfb5f8f | 6225 | if (pub->die->die_mark == 0) |
881c6935 JM |
6226 | abort (); |
6227 | ||
7e23cb16 | 6228 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pub->die->die_offset); |
c5cec899 | 6229 | if (flag_debug_asm) |
71dfc51f RK |
6230 | fprintf (asm_out_file, "\t%s DIE offset", ASM_COMMENT_START); |
6231 | ||
d291dd49 JM |
6232 | fputc ('\n', asm_out_file); |
6233 | ||
c5cec899 | 6234 | if (flag_debug_asm) |
8d4e65a6 JL |
6235 | { |
6236 | ASM_OUTPUT_DWARF_STRING (asm_out_file, pub->name); | |
6237 | fprintf (asm_out_file, "%s external name", ASM_COMMENT_START); | |
6238 | } | |
6239 | else | |
6240 | { | |
c84e2712 KG |
6241 | ASM_OUTPUT_ASCII (asm_out_file, pub->name, |
6242 | (int) strlen (pub->name) + 1); | |
8d4e65a6 | 6243 | } |
71dfc51f | 6244 | |
d291dd49 | 6245 | fputc ('\n', asm_out_file); |
a3f97cbb | 6246 | } |
71dfc51f | 6247 | |
7e23cb16 | 6248 | ASM_OUTPUT_DWARF_DATA (asm_out_file, 0); |
a3f97cbb JW |
6249 | fputc ('\n', asm_out_file); |
6250 | } | |
6251 | ||
d291dd49 | 6252 | /* Add a new entry to .debug_aranges if appropriate. */ |
71dfc51f | 6253 | |
d291dd49 JM |
6254 | static void |
6255 | add_arange (decl, die) | |
6256 | tree decl; | |
6257 | dw_die_ref die; | |
6258 | { | |
6259 | if (! DECL_SECTION_NAME (decl)) | |
6260 | return; | |
6261 | ||
6262 | if (arange_table_in_use == arange_table_allocated) | |
6263 | { | |
6264 | arange_table_allocated += ARANGE_TABLE_INCREMENT; | |
71dfc51f RK |
6265 | arange_table |
6266 | = (arange_ref) xrealloc (arange_table, | |
6267 | arange_table_allocated * sizeof (dw_die_ref)); | |
d291dd49 | 6268 | } |
71dfc51f | 6269 | |
d291dd49 JM |
6270 | arange_table[arange_table_in_use++] = die; |
6271 | } | |
6272 | ||
a3f97cbb JW |
6273 | /* Output the information that goes into the .debug_aranges table. |
6274 | Namely, define the beginning and ending address range of the | |
6275 | text section generated for this compilation unit. */ | |
71dfc51f | 6276 | |
a3f97cbb JW |
6277 | static void |
6278 | output_aranges () | |
6279 | { | |
d291dd49 | 6280 | register unsigned i; |
71dfc51f RK |
6281 | register unsigned long aranges_length = size_of_aranges (); |
6282 | ||
6283 | ASM_OUTPUT_DWARF_DATA (asm_out_file, aranges_length); | |
c5cec899 | 6284 | if (flag_debug_asm) |
71dfc51f RK |
6285 | fprintf (asm_out_file, "\t%s Length of Address Ranges Info.", |
6286 | ASM_COMMENT_START); | |
6287 | ||
a3f97cbb JW |
6288 | fputc ('\n', asm_out_file); |
6289 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
c5cec899 | 6290 | if (flag_debug_asm) |
71dfc51f RK |
6291 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
6292 | ||
a3f97cbb | 6293 | fputc ('\n', asm_out_file); |
8b790721 | 6294 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, debug_info_section_label); |
c5cec899 | 6295 | if (flag_debug_asm) |
71dfc51f RK |
6296 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
6297 | ASM_COMMENT_START); | |
6298 | ||
a3f97cbb | 6299 | fputc ('\n', asm_out_file); |
a1a4189d | 6300 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF2_ADDR_SIZE); |
c5cec899 | 6301 | if (flag_debug_asm) |
71dfc51f RK |
6302 | fprintf (asm_out_file, "\t%s Size of Address", ASM_COMMENT_START); |
6303 | ||
a3f97cbb JW |
6304 | fputc ('\n', asm_out_file); |
6305 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 6306 | if (flag_debug_asm) |
71dfc51f RK |
6307 | fprintf (asm_out_file, "\t%s Size of Segment Descriptor", |
6308 | ASM_COMMENT_START); | |
6309 | ||
a3f97cbb | 6310 | fputc ('\n', asm_out_file); |
71dfc51f | 6311 | |
262b6384 SC |
6312 | /* We need to align to twice the pointer size here. */ |
6313 | if (DWARF_ARANGES_PAD_SIZE) | |
6314 | { | |
6315 | /* Pad using a 2 bytes word so that padding is correct | |
6316 | for any pointer size. */ | |
6317 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, 0); | |
6318 | for (i = 2; i < DWARF_ARANGES_PAD_SIZE; i += 2) | |
556273e0 | 6319 | fprintf (asm_out_file, ",0"); |
262b6384 | 6320 | if (flag_debug_asm) |
556273e0 KH |
6321 | fprintf (asm_out_file, "\t%s Pad to %d byte boundary", |
6322 | ASM_COMMENT_START, 2 * DWARF2_ADDR_SIZE); | |
262b6384 | 6323 | } |
71dfc51f | 6324 | |
a3f97cbb | 6325 | fputc ('\n', asm_out_file); |
8b790721 | 6326 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_section_label); |
c5cec899 | 6327 | if (flag_debug_asm) |
71dfc51f RK |
6328 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
6329 | ||
a3f97cbb | 6330 | fputc ('\n', asm_out_file); |
71208e03 | 6331 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, text_end_label, |
8b790721 | 6332 | text_section_label); |
c5cec899 | 6333 | if (flag_debug_asm) |
71dfc51f RK |
6334 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
6335 | ||
a3f97cbb | 6336 | fputc ('\n', asm_out_file); |
d291dd49 JM |
6337 | for (i = 0; i < arange_table_in_use; ++i) |
6338 | { | |
e689ae67 | 6339 | dw_die_ref die = arange_table[i]; |
71dfc51f | 6340 | |
881c6935 | 6341 | /* We shouldn't see aranges for DIEs outside of the main CU. */ |
1bfb5f8f | 6342 | if (die->die_mark == 0) |
881c6935 JM |
6343 | abort (); |
6344 | ||
e689ae67 JM |
6345 | if (die->die_tag == DW_TAG_subprogram) |
6346 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, get_AT_low_pc (die)); | |
d291dd49 | 6347 | else |
a1d7ffe3 | 6348 | { |
e689ae67 JM |
6349 | /* A static variable; extract the symbol from DW_AT_location. |
6350 | Note that this code isn't currently hit, as we only emit | |
6351 | aranges for functions (jason 9/23/99). */ | |
71dfc51f | 6352 | |
e689ae67 JM |
6353 | dw_attr_ref a = get_AT (die, DW_AT_location); |
6354 | dw_loc_descr_ref loc; | |
a96c67ec | 6355 | if (! a || AT_class (a) != dw_val_class_loc) |
e689ae67 JM |
6356 | abort (); |
6357 | ||
a96c67ec | 6358 | loc = AT_loc (a); |
e689ae67 JM |
6359 | if (loc->dw_loc_opc != DW_OP_addr) |
6360 | abort (); | |
6361 | ||
1865dbb5 JM |
6362 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, |
6363 | loc->dw_loc_oprnd1.v.val_addr); | |
a1d7ffe3 | 6364 | } |
71dfc51f | 6365 | |
c5cec899 | 6366 | if (flag_debug_asm) |
71dfc51f RK |
6367 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
6368 | ||
d291dd49 | 6369 | fputc ('\n', asm_out_file); |
e689ae67 JM |
6370 | if (die->die_tag == DW_TAG_subprogram) |
6371 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, get_AT_hi_pc (die), | |
6372 | get_AT_low_pc (die)); | |
d291dd49 | 6373 | else |
7e23cb16 | 6374 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, |
e689ae67 | 6375 | get_AT_unsigned (die, DW_AT_byte_size)); |
71dfc51f | 6376 | |
c5cec899 | 6377 | if (flag_debug_asm) |
71dfc51f RK |
6378 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
6379 | ||
d291dd49 JM |
6380 | fputc ('\n', asm_out_file); |
6381 | } | |
71dfc51f | 6382 | |
a3f97cbb | 6383 | /* Output the terminator words. */ |
7e23cb16 | 6384 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb | 6385 | fputc ('\n', asm_out_file); |
7e23cb16 | 6386 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb JW |
6387 | fputc ('\n', asm_out_file); |
6388 | } | |
6389 | ||
6390 | /* Output the source line number correspondence information. This | |
14a774a9 | 6391 | information goes into the .debug_line section. */ |
71dfc51f | 6392 | |
a3f97cbb JW |
6393 | static void |
6394 | output_line_info () | |
6395 | { | |
a3f97cbb JW |
6396 | char line_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
6397 | char prev_line_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
6398 | register unsigned opc; | |
6399 | register unsigned n_op_args; | |
a3f97cbb JW |
6400 | register unsigned long ft_index; |
6401 | register unsigned long lt_index; | |
6402 | register unsigned long current_line; | |
6403 | register long line_offset; | |
6404 | register long line_delta; | |
6405 | register unsigned long current_file; | |
e90b62db | 6406 | register unsigned long function; |
71dfc51f | 6407 | |
14a774a9 | 6408 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, ".LTEND", ".LTSTART"); |
c5cec899 | 6409 | if (flag_debug_asm) |
71dfc51f RK |
6410 | fprintf (asm_out_file, "\t%s Length of Source Line Info.", |
6411 | ASM_COMMENT_START); | |
6412 | ||
a3f97cbb | 6413 | fputc ('\n', asm_out_file); |
14a774a9 | 6414 | ASM_OUTPUT_LABEL (asm_out_file, ".LTSTART"); |
a3f97cbb | 6415 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
c5cec899 | 6416 | if (flag_debug_asm) |
71dfc51f RK |
6417 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
6418 | ||
a3f97cbb | 6419 | fputc ('\n', asm_out_file); |
7e23cb16 | 6420 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_prolog ()); |
c5cec899 | 6421 | if (flag_debug_asm) |
71dfc51f RK |
6422 | fprintf (asm_out_file, "\t%s Prolog Length", ASM_COMMENT_START); |
6423 | ||
a3f97cbb JW |
6424 | fputc ('\n', asm_out_file); |
6425 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_MIN_INSTR_LENGTH); | |
c5cec899 | 6426 | if (flag_debug_asm) |
71dfc51f RK |
6427 | fprintf (asm_out_file, "\t%s Minimum Instruction Length", |
6428 | ASM_COMMENT_START); | |
6429 | ||
a3f97cbb JW |
6430 | fputc ('\n', asm_out_file); |
6431 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_DEFAULT_IS_STMT_START); | |
c5cec899 | 6432 | if (flag_debug_asm) |
71dfc51f RK |
6433 | fprintf (asm_out_file, "\t%s Default is_stmt_start flag", |
6434 | ASM_COMMENT_START); | |
6435 | ||
a3f97cbb | 6436 | fputc ('\n', asm_out_file); |
e8638df0 | 6437 | fprintf (asm_out_file, "%s%d", ASM_BYTE_OP, DWARF_LINE_BASE); |
c5cec899 | 6438 | if (flag_debug_asm) |
71dfc51f RK |
6439 | fprintf (asm_out_file, "\t%s Line Base Value (Special Opcodes)", |
6440 | ASM_COMMENT_START); | |
6441 | ||
a3f97cbb | 6442 | fputc ('\n', asm_out_file); |
e8638df0 | 6443 | fprintf (asm_out_file, "%s%u", ASM_BYTE_OP, DWARF_LINE_RANGE); |
c5cec899 | 6444 | if (flag_debug_asm) |
71dfc51f RK |
6445 | fprintf (asm_out_file, "\t%s Line Range Value (Special Opcodes)", |
6446 | ASM_COMMENT_START); | |
6447 | ||
a3f97cbb | 6448 | fputc ('\n', asm_out_file); |
e8638df0 | 6449 | fprintf (asm_out_file, "%s%u", ASM_BYTE_OP, DWARF_LINE_OPCODE_BASE); |
c5cec899 | 6450 | if (flag_debug_asm) |
71dfc51f RK |
6451 | fprintf (asm_out_file, "\t%s Special Opcode Base", ASM_COMMENT_START); |
6452 | ||
a3f97cbb JW |
6453 | fputc ('\n', asm_out_file); |
6454 | for (opc = 1; opc < DWARF_LINE_OPCODE_BASE; ++opc) | |
6455 | { | |
6456 | switch (opc) | |
6457 | { | |
6458 | case DW_LNS_advance_pc: | |
6459 | case DW_LNS_advance_line: | |
6460 | case DW_LNS_set_file: | |
6461 | case DW_LNS_set_column: | |
6462 | case DW_LNS_fixed_advance_pc: | |
6463 | n_op_args = 1; | |
6464 | break; | |
6465 | default: | |
6466 | n_op_args = 0; | |
6467 | break; | |
6468 | } | |
6469 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, n_op_args); | |
c5cec899 | 6470 | if (flag_debug_asm) |
71dfc51f RK |
6471 | fprintf (asm_out_file, "\t%s opcode: 0x%x has %d args", |
6472 | ASM_COMMENT_START, opc, n_op_args); | |
a3f97cbb JW |
6473 | fputc ('\n', asm_out_file); |
6474 | } | |
71dfc51f | 6475 | |
c5cec899 | 6476 | if (flag_debug_asm) |
71dfc51f RK |
6477 | fprintf (asm_out_file, "%s Include Directory Table\n", ASM_COMMENT_START); |
6478 | ||
a3f97cbb JW |
6479 | /* Include directory table is empty, at present */ |
6480 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
6481 | fputc ('\n', asm_out_file); | |
c5cec899 | 6482 | if (flag_debug_asm) |
71dfc51f RK |
6483 | fprintf (asm_out_file, "%s File Name Table\n", ASM_COMMENT_START); |
6484 | ||
a3f97cbb JW |
6485 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
6486 | { | |
c5cec899 | 6487 | if (flag_debug_asm) |
8d4e65a6 JL |
6488 | { |
6489 | ASM_OUTPUT_DWARF_STRING (asm_out_file, file_table[ft_index]); | |
2d8b0f3a | 6490 | fprintf (asm_out_file, "%s File Entry: 0x%lx", |
8d4e65a6 JL |
6491 | ASM_COMMENT_START, ft_index); |
6492 | } | |
6493 | else | |
6494 | { | |
6495 | ASM_OUTPUT_ASCII (asm_out_file, | |
6496 | file_table[ft_index], | |
c84e2712 | 6497 | (int) strlen (file_table[ft_index]) + 1); |
8d4e65a6 | 6498 | } |
71dfc51f | 6499 | |
a3f97cbb | 6500 | fputc ('\n', asm_out_file); |
71dfc51f | 6501 | |
a3f97cbb JW |
6502 | /* Include directory index */ |
6503 | output_uleb128 (0); | |
6504 | fputc ('\n', asm_out_file); | |
71dfc51f | 6505 | |
a3f97cbb JW |
6506 | /* Modification time */ |
6507 | output_uleb128 (0); | |
6508 | fputc ('\n', asm_out_file); | |
71dfc51f | 6509 | |
a3f97cbb JW |
6510 | /* File length in bytes */ |
6511 | output_uleb128 (0); | |
6512 | fputc ('\n', asm_out_file); | |
6513 | } | |
71dfc51f | 6514 | |
a3f97cbb JW |
6515 | /* Terminate the file name table */ |
6516 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
6517 | fputc ('\n', asm_out_file); | |
6518 | ||
2f22d404 JM |
6519 | /* We used to set the address register to the first location in the text |
6520 | section here, but that didn't accomplish anything since we already | |
6521 | have a line note for the opening brace of the first function. */ | |
a3f97cbb JW |
6522 | |
6523 | /* Generate the line number to PC correspondence table, encoded as | |
6524 | a series of state machine operations. */ | |
6525 | current_file = 1; | |
6526 | current_line = 1; | |
8b790721 | 6527 | strcpy (prev_line_label, text_section_label); |
a3f97cbb JW |
6528 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) |
6529 | { | |
2f22d404 JM |
6530 | register dw_line_info_ref line_info = &line_info_table[lt_index]; |
6531 | ||
10a11b75 JM |
6532 | #if 0 |
6533 | /* Disable this optimization for now; GDB wants to see two line notes | |
6534 | at the beginning of a function so it can find the end of the | |
6535 | prologue. */ | |
6536 | ||
2f22d404 JM |
6537 | /* Don't emit anything for redundant notes. Just updating the |
6538 | address doesn't accomplish anything, because we already assume | |
6539 | that anything after the last address is this line. */ | |
6540 | if (line_info->dw_line_num == current_line | |
6541 | && line_info->dw_file_num == current_file) | |
6542 | continue; | |
10a11b75 | 6543 | #endif |
71dfc51f | 6544 | |
f19a6894 JW |
6545 | /* Emit debug info for the address of the current line, choosing |
6546 | the encoding that uses the least amount of space. */ | |
6547 | /* ??? Unfortunately, we have little choice here currently, and must | |
6548 | always use the most general form. Gcc does not know the address | |
6549 | delta itself, so we can't use DW_LNS_advance_pc. There are no known | |
6550 | dwarf2 aware assemblers at this time, so we can't use any special | |
6551 | pseudo ops that would allow the assembler to optimally encode this for | |
6552 | us. Many ports do have length attributes which will give an upper | |
6553 | bound on the address range. We could perhaps use length attributes | |
6554 | to determine when it is safe to use DW_LNS_fixed_advance_pc. */ | |
5c90448c | 6555 | ASM_GENERATE_INTERNAL_LABEL (line_label, LINE_CODE_LABEL, lt_index); |
f19a6894 JW |
6556 | if (0) |
6557 | { | |
6558 | /* This can handle deltas up to 0xffff. This takes 3 bytes. */ | |
6559 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 6560 | if (flag_debug_asm) |
f19a6894 JW |
6561 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
6562 | ASM_COMMENT_START); | |
6563 | ||
6564 | fputc ('\n', asm_out_file); | |
6565 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, prev_line_label); | |
6566 | fputc ('\n', asm_out_file); | |
6567 | } | |
6568 | else | |
6569 | { | |
a1a4189d JB |
6570 | /* This can handle any delta. This takes |
6571 | 4+DWARF2_ADDR_SIZE bytes. */ | |
f19a6894 | 6572 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); |
c5cec899 | 6573 | if (flag_debug_asm) |
f19a6894 JW |
6574 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
6575 | ASM_COMMENT_START); | |
6576 | fputc ('\n', asm_out_file); | |
a1a4189d | 6577 | output_uleb128 (1 + DWARF2_ADDR_SIZE); |
f19a6894 JW |
6578 | fputc ('\n', asm_out_file); |
6579 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
6580 | fputc ('\n', asm_out_file); | |
6581 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
6582 | fputc ('\n', asm_out_file); | |
6583 | } | |
6584 | strcpy (prev_line_label, line_label); | |
6585 | ||
6586 | /* Emit debug info for the source file of the current line, if | |
6587 | different from the previous line. */ | |
a3f97cbb JW |
6588 | if (line_info->dw_file_num != current_file) |
6589 | { | |
6590 | current_file = line_info->dw_file_num; | |
6591 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 6592 | if (flag_debug_asm) |
71dfc51f RK |
6593 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
6594 | ||
a3f97cbb JW |
6595 | fputc ('\n', asm_out_file); |
6596 | output_uleb128 (current_file); | |
c5cec899 | 6597 | if (flag_debug_asm) |
b2932ae5 | 6598 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 6599 | |
a3f97cbb JW |
6600 | fputc ('\n', asm_out_file); |
6601 | } | |
71dfc51f | 6602 | |
f19a6894 JW |
6603 | /* Emit debug info for the current line number, choosing the encoding |
6604 | that uses the least amount of space. */ | |
2f22d404 | 6605 | if (line_info->dw_line_num != current_line) |
a3f97cbb | 6606 | { |
2f22d404 JM |
6607 | line_offset = line_info->dw_line_num - current_line; |
6608 | line_delta = line_offset - DWARF_LINE_BASE; | |
6609 | current_line = line_info->dw_line_num; | |
6610 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
6611 | { | |
6612 | /* This can handle deltas from -10 to 234, using the current | |
6613 | definitions of DWARF_LINE_BASE and DWARF_LINE_RANGE. This | |
6614 | takes 1 byte. */ | |
6615 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
6616 | DWARF_LINE_OPCODE_BASE + line_delta); | |
6617 | if (flag_debug_asm) | |
6618 | fprintf (asm_out_file, | |
6619 | "\t%s line %ld", ASM_COMMENT_START, current_line); | |
71dfc51f | 6620 | |
2f22d404 JM |
6621 | fputc ('\n', asm_out_file); |
6622 | } | |
6623 | else | |
6624 | { | |
6625 | /* This can handle any delta. This takes at least 4 bytes, | |
6626 | depending on the value being encoded. */ | |
6627 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
6628 | if (flag_debug_asm) | |
6629 | fprintf (asm_out_file, "\t%s advance to line %ld", | |
6630 | ASM_COMMENT_START, current_line); | |
6631 | ||
6632 | fputc ('\n', asm_out_file); | |
6633 | output_sleb128 (line_offset); | |
6634 | fputc ('\n', asm_out_file); | |
6635 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
6636 | if (flag_debug_asm) | |
6637 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
6638 | fputc ('\n', asm_out_file); | |
6639 | } | |
a94dbf2c JM |
6640 | } |
6641 | else | |
6642 | { | |
2f22d404 | 6643 | /* We still need to start a new row, so output a copy insn. */ |
a94dbf2c | 6644 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); |
2f22d404 JM |
6645 | if (flag_debug_asm) |
6646 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
a94dbf2c | 6647 | fputc ('\n', asm_out_file); |
a3f97cbb | 6648 | } |
a3f97cbb JW |
6649 | } |
6650 | ||
f19a6894 JW |
6651 | /* Emit debug info for the address of the end of the function. */ |
6652 | if (0) | |
6653 | { | |
6654 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 6655 | if (flag_debug_asm) |
f19a6894 JW |
6656 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
6657 | ASM_COMMENT_START); | |
71dfc51f | 6658 | |
f19a6894 JW |
6659 | fputc ('\n', asm_out_file); |
6660 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, text_end_label, prev_line_label); | |
6661 | fputc ('\n', asm_out_file); | |
6662 | } | |
6663 | else | |
6664 | { | |
6665 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 6666 | if (flag_debug_asm) |
f19a6894 JW |
6667 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); |
6668 | fputc ('\n', asm_out_file); | |
a1a4189d | 6669 | output_uleb128 (1 + DWARF2_ADDR_SIZE); |
f19a6894 JW |
6670 | fputc ('\n', asm_out_file); |
6671 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
6672 | fputc ('\n', asm_out_file); | |
6673 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_end_label); | |
6674 | fputc ('\n', asm_out_file); | |
6675 | } | |
bdb669cb | 6676 | |
a3f97cbb | 6677 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); |
c5cec899 | 6678 | if (flag_debug_asm) |
71dfc51f RK |
6679 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", ASM_COMMENT_START); |
6680 | ||
a3f97cbb JW |
6681 | fputc ('\n', asm_out_file); |
6682 | output_uleb128 (1); | |
6683 | fputc ('\n', asm_out_file); | |
6684 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
6685 | fputc ('\n', asm_out_file); | |
e90b62db JM |
6686 | |
6687 | function = 0; | |
6688 | current_file = 1; | |
6689 | current_line = 1; | |
556273e0 | 6690 | for (lt_index = 0; lt_index < separate_line_info_table_in_use;) |
e90b62db JM |
6691 | { |
6692 | register dw_separate_line_info_ref line_info | |
6693 | = &separate_line_info_table[lt_index]; | |
71dfc51f | 6694 | |
10a11b75 | 6695 | #if 0 |
2f22d404 JM |
6696 | /* Don't emit anything for redundant notes. */ |
6697 | if (line_info->dw_line_num == current_line | |
6698 | && line_info->dw_file_num == current_file | |
6699 | && line_info->function == function) | |
6700 | goto cont; | |
10a11b75 | 6701 | #endif |
2f22d404 | 6702 | |
f19a6894 JW |
6703 | /* Emit debug info for the address of the current line. If this is |
6704 | a new function, or the first line of a function, then we need | |
6705 | to handle it differently. */ | |
5c90448c JM |
6706 | ASM_GENERATE_INTERNAL_LABEL (line_label, SEPARATE_LINE_CODE_LABEL, |
6707 | lt_index); | |
e90b62db JM |
6708 | if (function != line_info->function) |
6709 | { | |
6710 | function = line_info->function; | |
71dfc51f | 6711 | |
e90b62db JM |
6712 | /* Set the address register to the first line in the function */ |
6713 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 6714 | if (flag_debug_asm) |
e90b62db JM |
6715 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
6716 | ASM_COMMENT_START); | |
71dfc51f | 6717 | |
e90b62db | 6718 | fputc ('\n', asm_out_file); |
a1a4189d | 6719 | output_uleb128 (1 + DWARF2_ADDR_SIZE); |
e90b62db JM |
6720 | fputc ('\n', asm_out_file); |
6721 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
6722 | fputc ('\n', asm_out_file); | |
6723 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
6724 | fputc ('\n', asm_out_file); | |
6725 | } | |
6726 | else | |
6727 | { | |
f19a6894 JW |
6728 | /* ??? See the DW_LNS_advance_pc comment above. */ |
6729 | if (0) | |
6730 | { | |
6731 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 6732 | if (flag_debug_asm) |
f19a6894 JW |
6733 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
6734 | ASM_COMMENT_START); | |
71dfc51f | 6735 | |
f19a6894 JW |
6736 | fputc ('\n', asm_out_file); |
6737 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
6738 | prev_line_label); | |
6739 | fputc ('\n', asm_out_file); | |
6740 | } | |
6741 | else | |
6742 | { | |
6743 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 6744 | if (flag_debug_asm) |
f19a6894 JW |
6745 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
6746 | ASM_COMMENT_START); | |
6747 | fputc ('\n', asm_out_file); | |
a1a4189d | 6748 | output_uleb128 (1 + DWARF2_ADDR_SIZE); |
f19a6894 JW |
6749 | fputc ('\n', asm_out_file); |
6750 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
6751 | fputc ('\n', asm_out_file); | |
6752 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
6753 | fputc ('\n', asm_out_file); | |
6754 | } | |
e90b62db | 6755 | } |
f19a6894 | 6756 | strcpy (prev_line_label, line_label); |
71dfc51f | 6757 | |
f19a6894 JW |
6758 | /* Emit debug info for the source file of the current line, if |
6759 | different from the previous line. */ | |
e90b62db JM |
6760 | if (line_info->dw_file_num != current_file) |
6761 | { | |
6762 | current_file = line_info->dw_file_num; | |
6763 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 6764 | if (flag_debug_asm) |
71dfc51f RK |
6765 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
6766 | ||
e90b62db JM |
6767 | fputc ('\n', asm_out_file); |
6768 | output_uleb128 (current_file); | |
c5cec899 | 6769 | if (flag_debug_asm) |
b2932ae5 | 6770 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 6771 | |
e90b62db JM |
6772 | fputc ('\n', asm_out_file); |
6773 | } | |
71dfc51f | 6774 | |
f19a6894 JW |
6775 | /* Emit debug info for the current line number, choosing the encoding |
6776 | that uses the least amount of space. */ | |
e90b62db JM |
6777 | if (line_info->dw_line_num != current_line) |
6778 | { | |
6779 | line_offset = line_info->dw_line_num - current_line; | |
6780 | line_delta = line_offset - DWARF_LINE_BASE; | |
6781 | current_line = line_info->dw_line_num; | |
6782 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
6783 | { | |
6784 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
6785 | DWARF_LINE_OPCODE_BASE + line_delta); | |
c5cec899 | 6786 | if (flag_debug_asm) |
71dfc51f | 6787 | fprintf (asm_out_file, |
2d8b0f3a | 6788 | "\t%s line %ld", ASM_COMMENT_START, current_line); |
71dfc51f | 6789 | |
e90b62db JM |
6790 | fputc ('\n', asm_out_file); |
6791 | } | |
6792 | else | |
6793 | { | |
6794 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
c5cec899 | 6795 | if (flag_debug_asm) |
2d8b0f3a | 6796 | fprintf (asm_out_file, "\t%s advance to line %ld", |
71dfc51f RK |
6797 | ASM_COMMENT_START, current_line); |
6798 | ||
e90b62db JM |
6799 | fputc ('\n', asm_out_file); |
6800 | output_sleb128 (line_offset); | |
6801 | fputc ('\n', asm_out_file); | |
6802 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
2f22d404 JM |
6803 | if (flag_debug_asm) |
6804 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
e90b62db JM |
6805 | fputc ('\n', asm_out_file); |
6806 | } | |
6807 | } | |
2f22d404 JM |
6808 | else |
6809 | { | |
6810 | /* We still need to start a new row, so output a copy insn. */ | |
6811 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
6812 | if (flag_debug_asm) | |
6813 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
6814 | fputc ('\n', asm_out_file); | |
6815 | } | |
71dfc51f | 6816 | |
10a11b75 | 6817 | #if 0 |
2f22d404 | 6818 | cont: |
10a11b75 | 6819 | #endif |
e90b62db | 6820 | ++lt_index; |
e90b62db JM |
6821 | |
6822 | /* If we're done with a function, end its sequence. */ | |
6823 | if (lt_index == separate_line_info_table_in_use | |
6824 | || separate_line_info_table[lt_index].function != function) | |
6825 | { | |
6826 | current_file = 1; | |
6827 | current_line = 1; | |
71dfc51f | 6828 | |
f19a6894 | 6829 | /* Emit debug info for the address of the end of the function. */ |
5c90448c | 6830 | ASM_GENERATE_INTERNAL_LABEL (line_label, FUNC_END_LABEL, function); |
f19a6894 JW |
6831 | if (0) |
6832 | { | |
6833 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 6834 | if (flag_debug_asm) |
f19a6894 JW |
6835 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
6836 | ASM_COMMENT_START); | |
6837 | ||
6838 | fputc ('\n', asm_out_file); | |
6839 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
6840 | prev_line_label); | |
6841 | fputc ('\n', asm_out_file); | |
6842 | } | |
6843 | else | |
6844 | { | |
6845 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 6846 | if (flag_debug_asm) |
f19a6894 JW |
6847 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
6848 | ASM_COMMENT_START); | |
6849 | fputc ('\n', asm_out_file); | |
a1a4189d | 6850 | output_uleb128 (1 + DWARF2_ADDR_SIZE); |
f19a6894 JW |
6851 | fputc ('\n', asm_out_file); |
6852 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
6853 | fputc ('\n', asm_out_file); | |
6854 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
6855 | fputc ('\n', asm_out_file); | |
6856 | } | |
e90b62db JM |
6857 | |
6858 | /* Output the marker for the end of this sequence. */ | |
6859 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 6860 | if (flag_debug_asm) |
e90b62db JM |
6861 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", |
6862 | ASM_COMMENT_START); | |
71dfc51f | 6863 | |
e90b62db JM |
6864 | fputc ('\n', asm_out_file); |
6865 | output_uleb128 (1); | |
6866 | fputc ('\n', asm_out_file); | |
6867 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
6868 | fputc ('\n', asm_out_file); | |
6869 | } | |
6870 | } | |
f19f17e0 JM |
6871 | |
6872 | /* Output the marker for the end of the line number info. */ | |
6873 | ASM_OUTPUT_LABEL (asm_out_file, ".LTEND"); | |
a3f97cbb JW |
6874 | } |
6875 | \f | |
a3f97cbb JW |
6876 | /* Given a pointer to a tree node for some base type, return a pointer to |
6877 | a DIE that describes the given type. | |
6878 | ||
6879 | This routine must only be called for GCC type nodes that correspond to | |
6880 | Dwarf base (fundamental) types. */ | |
71dfc51f | 6881 | |
a3f97cbb JW |
6882 | static dw_die_ref |
6883 | base_type_die (type) | |
6884 | register tree type; | |
6885 | { | |
a9d38797 | 6886 | register dw_die_ref base_type_result; |
ec0ce6e2 | 6887 | register const char *type_name; |
a9d38797 | 6888 | register enum dwarf_type encoding; |
71dfc51f | 6889 | register tree name = TYPE_NAME (type); |
a3f97cbb | 6890 | |
a9d38797 JM |
6891 | if (TREE_CODE (type) == ERROR_MARK |
6892 | || TREE_CODE (type) == VOID_TYPE) | |
a3f97cbb JW |
6893 | return 0; |
6894 | ||
405f63da MM |
6895 | if (name) |
6896 | { | |
6897 | if (TREE_CODE (name) == TYPE_DECL) | |
6898 | name = DECL_NAME (name); | |
6899 | ||
6900 | type_name = IDENTIFIER_POINTER (name); | |
6901 | } | |
6902 | else | |
6903 | type_name = "__unknown__"; | |
a9d38797 | 6904 | |
a3f97cbb JW |
6905 | switch (TREE_CODE (type)) |
6906 | { | |
a3f97cbb | 6907 | case INTEGER_TYPE: |
a9d38797 | 6908 | /* Carefully distinguish the C character types, without messing |
a3f97cbb | 6909 | up if the language is not C. Note that we check only for the names |
556273e0 | 6910 | that contain spaces; other names might occur by coincidence in other |
a3f97cbb | 6911 | languages. */ |
a9d38797 JM |
6912 | if (! (TYPE_PRECISION (type) == CHAR_TYPE_SIZE |
6913 | && (type == char_type_node | |
6914 | || ! strcmp (type_name, "signed char") | |
6915 | || ! strcmp (type_name, "unsigned char")))) | |
a3f97cbb | 6916 | { |
a9d38797 JM |
6917 | if (TREE_UNSIGNED (type)) |
6918 | encoding = DW_ATE_unsigned; | |
6919 | else | |
6920 | encoding = DW_ATE_signed; | |
6921 | break; | |
a3f97cbb | 6922 | } |
556273e0 | 6923 | /* else fall through. */ |
a3f97cbb | 6924 | |
a9d38797 JM |
6925 | case CHAR_TYPE: |
6926 | /* GNU Pascal/Ada CHAR type. Not used in C. */ | |
6927 | if (TREE_UNSIGNED (type)) | |
6928 | encoding = DW_ATE_unsigned_char; | |
6929 | else | |
6930 | encoding = DW_ATE_signed_char; | |
a3f97cbb JW |
6931 | break; |
6932 | ||
6933 | case REAL_TYPE: | |
a9d38797 | 6934 | encoding = DW_ATE_float; |
a3f97cbb JW |
6935 | break; |
6936 | ||
405f63da MM |
6937 | /* Dwarf2 doesn't know anything about complex ints, so use |
6938 | a user defined type for it. */ | |
a3f97cbb | 6939 | case COMPLEX_TYPE: |
405f63da MM |
6940 | if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE) |
6941 | encoding = DW_ATE_complex_float; | |
6942 | else | |
6943 | encoding = DW_ATE_lo_user; | |
a3f97cbb JW |
6944 | break; |
6945 | ||
6946 | case BOOLEAN_TYPE: | |
a9d38797 JM |
6947 | /* GNU FORTRAN/Ada/C++ BOOLEAN type. */ |
6948 | encoding = DW_ATE_boolean; | |
a3f97cbb JW |
6949 | break; |
6950 | ||
6951 | default: | |
a9d38797 | 6952 | abort (); /* No other TREE_CODEs are Dwarf fundamental types. */ |
a3f97cbb JW |
6953 | } |
6954 | ||
a9d38797 | 6955 | base_type_result = new_die (DW_TAG_base_type, comp_unit_die); |
14a774a9 RK |
6956 | if (demangle_name_func) |
6957 | type_name = (*demangle_name_func) (type_name); | |
6958 | ||
a9d38797 JM |
6959 | add_AT_string (base_type_result, DW_AT_name, type_name); |
6960 | add_AT_unsigned (base_type_result, DW_AT_byte_size, | |
4e5a8d7b | 6961 | int_size_in_bytes (type)); |
a9d38797 | 6962 | add_AT_unsigned (base_type_result, DW_AT_encoding, encoding); |
a3f97cbb JW |
6963 | |
6964 | return base_type_result; | |
6965 | } | |
6966 | ||
6967 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a pointer to | |
6968 | the Dwarf "root" type for the given input type. The Dwarf "root" type of | |
6969 | a given type is generally the same as the given type, except that if the | |
6970 | given type is a pointer or reference type, then the root type of the given | |
6971 | type is the root type of the "basis" type for the pointer or reference | |
6972 | type. (This definition of the "root" type is recursive.) Also, the root | |
6973 | type of a `const' qualified type or a `volatile' qualified type is the | |
6974 | root type of the given type without the qualifiers. */ | |
71dfc51f | 6975 | |
a3f97cbb JW |
6976 | static tree |
6977 | root_type (type) | |
6978 | register tree type; | |
6979 | { | |
6980 | if (TREE_CODE (type) == ERROR_MARK) | |
6981 | return error_mark_node; | |
6982 | ||
6983 | switch (TREE_CODE (type)) | |
6984 | { | |
6985 | case ERROR_MARK: | |
6986 | return error_mark_node; | |
6987 | ||
6988 | case POINTER_TYPE: | |
6989 | case REFERENCE_TYPE: | |
6990 | return type_main_variant (root_type (TREE_TYPE (type))); | |
6991 | ||
6992 | default: | |
6993 | return type_main_variant (type); | |
6994 | } | |
6995 | } | |
6996 | ||
6997 | /* Given a pointer to an arbitrary ..._TYPE tree node, return non-zero if the | |
6998 | given input type is a Dwarf "fundamental" type. Otherwise return null. */ | |
71dfc51f RK |
6999 | |
7000 | static inline int | |
a3f97cbb JW |
7001 | is_base_type (type) |
7002 | register tree type; | |
7003 | { | |
7004 | switch (TREE_CODE (type)) | |
7005 | { | |
7006 | case ERROR_MARK: | |
7007 | case VOID_TYPE: | |
7008 | case INTEGER_TYPE: | |
7009 | case REAL_TYPE: | |
7010 | case COMPLEX_TYPE: | |
7011 | case BOOLEAN_TYPE: | |
7012 | case CHAR_TYPE: | |
7013 | return 1; | |
7014 | ||
7015 | case SET_TYPE: | |
7016 | case ARRAY_TYPE: | |
7017 | case RECORD_TYPE: | |
7018 | case UNION_TYPE: | |
7019 | case QUAL_UNION_TYPE: | |
7020 | case ENUMERAL_TYPE: | |
7021 | case FUNCTION_TYPE: | |
7022 | case METHOD_TYPE: | |
7023 | case POINTER_TYPE: | |
7024 | case REFERENCE_TYPE: | |
7025 | case FILE_TYPE: | |
7026 | case OFFSET_TYPE: | |
7027 | case LANG_TYPE: | |
7028 | return 0; | |
7029 | ||
7030 | default: | |
7031 | abort (); | |
7032 | } | |
71dfc51f | 7033 | |
a3f97cbb JW |
7034 | return 0; |
7035 | } | |
7036 | ||
7037 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a debugging | |
7038 | entry that chains various modifiers in front of the given type. */ | |
71dfc51f | 7039 | |
a3f97cbb JW |
7040 | static dw_die_ref |
7041 | modified_type_die (type, is_const_type, is_volatile_type, context_die) | |
7042 | register tree type; | |
7043 | register int is_const_type; | |
7044 | register int is_volatile_type; | |
7045 | register dw_die_ref context_die; | |
7046 | { | |
7047 | register enum tree_code code = TREE_CODE (type); | |
7048 | register dw_die_ref mod_type_die = NULL; | |
7049 | register dw_die_ref sub_die = NULL; | |
dfcf9891 | 7050 | register tree item_type = NULL; |
a3f97cbb JW |
7051 | |
7052 | if (code != ERROR_MARK) | |
7053 | { | |
a94dbf2c | 7054 | type = build_type_variant (type, is_const_type, is_volatile_type); |
bdb669cb JM |
7055 | |
7056 | mod_type_die = lookup_type_die (type); | |
7057 | if (mod_type_die) | |
7058 | return mod_type_die; | |
7059 | ||
556273e0 | 7060 | /* Handle C typedef types. */ |
a94dbf2c JM |
7061 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
7062 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
7063 | { | |
7064 | tree dtype = TREE_TYPE (TYPE_NAME (type)); | |
7065 | if (type == dtype) | |
7066 | { | |
7067 | /* For a named type, use the typedef. */ | |
7068 | gen_type_die (type, context_die); | |
7069 | mod_type_die = lookup_type_die (type); | |
7070 | } | |
71dfc51f | 7071 | |
a94dbf2c JM |
7072 | else if (is_const_type < TYPE_READONLY (dtype) |
7073 | || is_volatile_type < TYPE_VOLATILE (dtype)) | |
7074 | /* cv-unqualified version of named type. Just use the unnamed | |
7075 | type to which it refers. */ | |
71dfc51f RK |
7076 | mod_type_die |
7077 | = modified_type_die (DECL_ORIGINAL_TYPE (TYPE_NAME (type)), | |
7078 | is_const_type, is_volatile_type, | |
7079 | context_die); | |
7080 | /* Else cv-qualified version of named type; fall through. */ | |
a94dbf2c JM |
7081 | } |
7082 | ||
7083 | if (mod_type_die) | |
556273e0 KH |
7084 | /* OK. */ |
7085 | ; | |
a94dbf2c | 7086 | else if (is_const_type) |
a3f97cbb | 7087 | { |
ab72d377 | 7088 | mod_type_die = new_die (DW_TAG_const_type, comp_unit_die); |
a9d38797 | 7089 | sub_die = modified_type_die (type, 0, is_volatile_type, context_die); |
a3f97cbb JW |
7090 | } |
7091 | else if (is_volatile_type) | |
7092 | { | |
ab72d377 | 7093 | mod_type_die = new_die (DW_TAG_volatile_type, comp_unit_die); |
a9d38797 | 7094 | sub_die = modified_type_die (type, 0, 0, context_die); |
a3f97cbb JW |
7095 | } |
7096 | else if (code == POINTER_TYPE) | |
7097 | { | |
ab72d377 | 7098 | mod_type_die = new_die (DW_TAG_pointer_type, comp_unit_die); |
a3f97cbb | 7099 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 7100 | #if 0 |
a3f97cbb | 7101 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 7102 | #endif |
a3f97cbb | 7103 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
7104 | } |
7105 | else if (code == REFERENCE_TYPE) | |
7106 | { | |
ab72d377 | 7107 | mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die); |
a3f97cbb | 7108 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 7109 | #if 0 |
a3f97cbb | 7110 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
556273e0 | 7111 | #endif |
a3f97cbb | 7112 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
7113 | } |
7114 | else if (is_base_type (type)) | |
71dfc51f | 7115 | mod_type_die = base_type_die (type); |
a3f97cbb JW |
7116 | else |
7117 | { | |
4b674448 JM |
7118 | gen_type_die (type, context_die); |
7119 | ||
a3f97cbb JW |
7120 | /* We have to get the type_main_variant here (and pass that to the |
7121 | `lookup_type_die' routine) because the ..._TYPE node we have | |
7122 | might simply be a *copy* of some original type node (where the | |
7123 | copy was created to help us keep track of typedef names) and | |
7124 | that copy might have a different TYPE_UID from the original | |
a94dbf2c | 7125 | ..._TYPE node. */ |
a3f97cbb | 7126 | mod_type_die = lookup_type_die (type_main_variant (type)); |
3a88cbd1 JL |
7127 | if (mod_type_die == NULL) |
7128 | abort (); | |
a3f97cbb JW |
7129 | } |
7130 | } | |
71dfc51f | 7131 | |
dfcf9891 JW |
7132 | equate_type_number_to_die (type, mod_type_die); |
7133 | if (item_type) | |
71dfc51f RK |
7134 | /* We must do this after the equate_type_number_to_die call, in case |
7135 | this is a recursive type. This ensures that the modified_type_die | |
7136 | recursion will terminate even if the type is recursive. Recursive | |
7137 | types are possible in Ada. */ | |
7138 | sub_die = modified_type_die (item_type, | |
7139 | TYPE_READONLY (item_type), | |
7140 | TYPE_VOLATILE (item_type), | |
7141 | context_die); | |
7142 | ||
a3f97cbb | 7143 | if (sub_die != NULL) |
71dfc51f RK |
7144 | add_AT_die_ref (mod_type_die, DW_AT_type, sub_die); |
7145 | ||
a3f97cbb JW |
7146 | return mod_type_die; |
7147 | } | |
7148 | ||
a3f97cbb JW |
7149 | /* Given a pointer to an arbitrary ..._TYPE tree node, return true if it is |
7150 | an enumerated type. */ | |
71dfc51f RK |
7151 | |
7152 | static inline int | |
a3f97cbb JW |
7153 | type_is_enum (type) |
7154 | register tree type; | |
7155 | { | |
7156 | return TREE_CODE (type) == ENUMERAL_TYPE; | |
7157 | } | |
7158 | ||
7d9d8943 AM |
7159 | /* Return the register number described by a given RTL node. */ |
7160 | ||
7161 | static unsigned int | |
7162 | reg_number (rtl) | |
7163 | register rtx rtl; | |
7164 | { | |
7165 | register unsigned regno = REGNO (rtl); | |
7166 | ||
7167 | if (regno >= FIRST_PSEUDO_REGISTER) | |
7168 | { | |
7169 | warning ("internal regno botch: regno = %d\n", regno); | |
7170 | regno = 0; | |
7171 | } | |
7172 | ||
7173 | regno = DBX_REGISTER_NUMBER (regno); | |
7174 | return regno; | |
7175 | } | |
7176 | ||
a3f97cbb | 7177 | /* Return a location descriptor that designates a machine register. */ |
71dfc51f | 7178 | |
a3f97cbb JW |
7179 | static dw_loc_descr_ref |
7180 | reg_loc_descriptor (rtl) | |
7181 | register rtx rtl; | |
7182 | { | |
7183 | register dw_loc_descr_ref loc_result = NULL; | |
7184 | register unsigned reg = reg_number (rtl); | |
71dfc51f | 7185 | |
85066503 | 7186 | if (reg <= 31) |
71dfc51f | 7187 | loc_result = new_loc_descr (DW_OP_reg0 + reg, 0, 0); |
a3f97cbb | 7188 | else |
71dfc51f RK |
7189 | loc_result = new_loc_descr (DW_OP_regx, reg, 0); |
7190 | ||
a3f97cbb JW |
7191 | return loc_result; |
7192 | } | |
7193 | ||
d8041cc8 RH |
7194 | /* Return a location descriptor that designates a constant. */ |
7195 | ||
7196 | static dw_loc_descr_ref | |
7197 | int_loc_descriptor (i) | |
7198 | HOST_WIDE_INT i; | |
7199 | { | |
7200 | enum dwarf_location_atom op; | |
7201 | ||
7202 | /* Pick the smallest representation of a constant, rather than just | |
7203 | defaulting to the LEB encoding. */ | |
7204 | if (i >= 0) | |
7205 | { | |
7206 | if (i <= 31) | |
7207 | op = DW_OP_lit0 + i; | |
7208 | else if (i <= 0xff) | |
7209 | op = DW_OP_const1u; | |
7210 | else if (i <= 0xffff) | |
7211 | op = DW_OP_const2u; | |
7212 | else if (HOST_BITS_PER_WIDE_INT == 32 | |
7213 | || i <= 0xffffffff) | |
7214 | op = DW_OP_const4u; | |
7215 | else | |
7216 | op = DW_OP_constu; | |
7217 | } | |
7218 | else | |
7219 | { | |
7220 | if (i >= -0x80) | |
7221 | op = DW_OP_const1s; | |
7222 | else if (i >= -0x8000) | |
7223 | op = DW_OP_const2s; | |
7224 | else if (HOST_BITS_PER_WIDE_INT == 32 | |
7225 | || i >= -0x80000000) | |
7226 | op = DW_OP_const4s; | |
7227 | else | |
7228 | op = DW_OP_consts; | |
7229 | } | |
7230 | ||
7231 | return new_loc_descr (op, i, 0); | |
7232 | } | |
7233 | ||
a3f97cbb | 7234 | /* Return a location descriptor that designates a base+offset location. */ |
71dfc51f | 7235 | |
a3f97cbb JW |
7236 | static dw_loc_descr_ref |
7237 | based_loc_descr (reg, offset) | |
7238 | unsigned reg; | |
7239 | long int offset; | |
7240 | { | |
7241 | register dw_loc_descr_ref loc_result; | |
810429b7 JM |
7242 | /* For the "frame base", we use the frame pointer or stack pointer |
7243 | registers, since the RTL for local variables is relative to one of | |
7244 | them. */ | |
7245 | register unsigned fp_reg = DBX_REGISTER_NUMBER (frame_pointer_needed | |
b1ccbc24 | 7246 | ? HARD_FRAME_POINTER_REGNUM |
810429b7 | 7247 | : STACK_POINTER_REGNUM); |
71dfc51f | 7248 | |
a3f97cbb | 7249 | if (reg == fp_reg) |
71dfc51f | 7250 | loc_result = new_loc_descr (DW_OP_fbreg, offset, 0); |
85066503 | 7251 | else if (reg <= 31) |
71dfc51f | 7252 | loc_result = new_loc_descr (DW_OP_breg0 + reg, offset, 0); |
a3f97cbb | 7253 | else |
71dfc51f RK |
7254 | loc_result = new_loc_descr (DW_OP_bregx, reg, offset); |
7255 | ||
a3f97cbb JW |
7256 | return loc_result; |
7257 | } | |
7258 | ||
7259 | /* Return true if this RTL expression describes a base+offset calculation. */ | |
71dfc51f RK |
7260 | |
7261 | static inline int | |
a3f97cbb JW |
7262 | is_based_loc (rtl) |
7263 | register rtx rtl; | |
7264 | { | |
71dfc51f RK |
7265 | return (GET_CODE (rtl) == PLUS |
7266 | && ((GET_CODE (XEXP (rtl, 0)) == REG | |
7267 | && GET_CODE (XEXP (rtl, 1)) == CONST_INT))); | |
a3f97cbb JW |
7268 | } |
7269 | ||
7270 | /* The following routine converts the RTL for a variable or parameter | |
7271 | (resident in memory) into an equivalent Dwarf representation of a | |
7272 | mechanism for getting the address of that same variable onto the top of a | |
7273 | hypothetical "address evaluation" stack. | |
71dfc51f | 7274 | |
a3f97cbb JW |
7275 | When creating memory location descriptors, we are effectively transforming |
7276 | the RTL for a memory-resident object into its Dwarf postfix expression | |
7277 | equivalent. This routine recursively descends an RTL tree, turning | |
e60d4d7b JL |
7278 | it into Dwarf postfix code as it goes. |
7279 | ||
7280 | MODE is the mode of the memory reference, needed to handle some | |
7281 | autoincrement addressing modes. */ | |
71dfc51f | 7282 | |
a3f97cbb | 7283 | static dw_loc_descr_ref |
e60d4d7b | 7284 | mem_loc_descriptor (rtl, mode) |
a3f97cbb | 7285 | register rtx rtl; |
e60d4d7b | 7286 | enum machine_mode mode; |
a3f97cbb JW |
7287 | { |
7288 | dw_loc_descr_ref mem_loc_result = NULL; | |
556273e0 | 7289 | /* Note that for a dynamically sized array, the location we will generate a |
a3f97cbb JW |
7290 | description of here will be the lowest numbered location which is |
7291 | actually within the array. That's *not* necessarily the same as the | |
7292 | zeroth element of the array. */ | |
71dfc51f | 7293 | |
1865dbb5 JM |
7294 | #ifdef ASM_SIMPLIFY_DWARF_ADDR |
7295 | rtl = ASM_SIMPLIFY_DWARF_ADDR (rtl); | |
7296 | #endif | |
7297 | ||
a3f97cbb JW |
7298 | switch (GET_CODE (rtl)) |
7299 | { | |
e60d4d7b JL |
7300 | case POST_INC: |
7301 | case POST_DEC: | |
7302 | /* POST_INC and POST_DEC can be handled just like a SUBREG. So we | |
7303 | just fall into the SUBREG code. */ | |
7304 | ||
556273e0 | 7305 | /* Fall through. */ |
e60d4d7b | 7306 | |
a3f97cbb JW |
7307 | case SUBREG: |
7308 | /* The case of a subreg may arise when we have a local (register) | |
7309 | variable or a formal (register) parameter which doesn't quite fill | |
7310 | up an entire register. For now, just assume that it is | |
7311 | legitimate to make the Dwarf info refer to the whole register which | |
7312 | contains the given subreg. */ | |
7313 | rtl = XEXP (rtl, 0); | |
71dfc51f | 7314 | |
556273e0 | 7315 | /* Fall through. */ |
a3f97cbb JW |
7316 | |
7317 | case REG: | |
7318 | /* Whenever a register number forms a part of the description of the | |
7319 | method for calculating the (dynamic) address of a memory resident | |
556273e0 | 7320 | object, DWARF rules require the register number be referred to as |
a3f97cbb JW |
7321 | a "base register". This distinction is not based in any way upon |
7322 | what category of register the hardware believes the given register | |
7323 | belongs to. This is strictly DWARF terminology we're dealing with | |
7324 | here. Note that in cases where the location of a memory-resident | |
7325 | data object could be expressed as: OP_ADD (OP_BASEREG (basereg), | |
7326 | OP_CONST (0)) the actual DWARF location descriptor that we generate | |
7327 | may just be OP_BASEREG (basereg). This may look deceptively like | |
7328 | the object in question was allocated to a register (rather than in | |
7329 | memory) so DWARF consumers need to be aware of the subtle | |
7330 | distinction between OP_REG and OP_BASEREG. */ | |
7331 | mem_loc_result = based_loc_descr (reg_number (rtl), 0); | |
7332 | break; | |
7333 | ||
7334 | case MEM: | |
d8041cc8 RH |
7335 | { |
7336 | dw_loc_descr_ref deref; | |
7337 | ||
7338 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl)); | |
7339 | ||
7340 | if (GET_MODE_SIZE (mode) == DWARF2_ADDR_SIZE) | |
7341 | deref = new_loc_descr (DW_OP_deref, 0, 0); | |
7342 | else | |
7343 | deref = new_loc_descr (DW_OP_deref_size, GET_MODE_SIZE (mode), 0); | |
7344 | ||
7345 | add_loc_descr (&mem_loc_result, deref); | |
7346 | } | |
a3f97cbb JW |
7347 | break; |
7348 | ||
d8041cc8 RH |
7349 | case LABEL_REF: |
7350 | /* Some ports can transform a symbol ref into a label ref, because | |
368f4cd6 NC |
7351 | the symbol ref is too far away and has to be dumped into a constant |
7352 | pool. */ | |
a3f97cbb JW |
7353 | case CONST: |
7354 | case SYMBOL_REF: | |
7355 | mem_loc_result = new_loc_descr (DW_OP_addr, 0, 0); | |
7356 | mem_loc_result->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
1865dbb5 | 7357 | mem_loc_result->dw_loc_oprnd1.v.val_addr = save_rtx (rtl); |
a3f97cbb JW |
7358 | break; |
7359 | ||
e60d4d7b JL |
7360 | case PRE_INC: |
7361 | case PRE_DEC: | |
7362 | /* Turn these into a PLUS expression and fall into the PLUS code | |
7363 | below. */ | |
7364 | rtl = gen_rtx_PLUS (word_mode, XEXP (rtl, 0), | |
7365 | GEN_INT (GET_CODE (rtl) == PRE_INC | |
556273e0 KH |
7366 | ? GET_MODE_UNIT_SIZE (mode) |
7367 | : -GET_MODE_UNIT_SIZE (mode))); | |
7368 | ||
7369 | /* Fall through. */ | |
e60d4d7b | 7370 | |
a3f97cbb JW |
7371 | case PLUS: |
7372 | if (is_based_loc (rtl)) | |
71dfc51f RK |
7373 | mem_loc_result = based_loc_descr (reg_number (XEXP (rtl, 0)), |
7374 | INTVAL (XEXP (rtl, 1))); | |
a3f97cbb JW |
7375 | else |
7376 | { | |
d8041cc8 RH |
7377 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), mode); |
7378 | ||
7379 | if (GET_CODE (XEXP (rtl, 1)) == CONST_INT | |
7380 | && INTVAL (XEXP (rtl, 1)) >= 0) | |
7381 | { | |
7382 | add_loc_descr (&mem_loc_result, | |
7383 | new_loc_descr (DW_OP_plus_uconst, | |
7384 | INTVAL (XEXP (rtl, 1)), 0)); | |
7385 | } | |
7386 | else | |
7387 | { | |
7388 | add_loc_descr (&mem_loc_result, | |
7389 | mem_loc_descriptor (XEXP (rtl, 1), mode)); | |
7390 | add_loc_descr (&mem_loc_result, | |
7391 | new_loc_descr (DW_OP_plus, 0, 0)); | |
7392 | } | |
a3f97cbb JW |
7393 | } |
7394 | break; | |
7395 | ||
dd2478ae JW |
7396 | case MULT: |
7397 | /* If a pseudo-reg is optimized away, it is possible for it to | |
7398 | be replaced with a MEM containing a multiply. */ | |
d8041cc8 RH |
7399 | add_loc_descr (&mem_loc_result, |
7400 | mem_loc_descriptor (XEXP (rtl, 0), mode)); | |
7401 | add_loc_descr (&mem_loc_result, | |
7402 | mem_loc_descriptor (XEXP (rtl, 1), mode)); | |
dd2478ae JW |
7403 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_mul, 0, 0)); |
7404 | break; | |
7405 | ||
a3f97cbb | 7406 | case CONST_INT: |
d8041cc8 | 7407 | mem_loc_result = int_loc_descriptor (INTVAL (rtl)); |
a3f97cbb JW |
7408 | break; |
7409 | ||
7410 | default: | |
7411 | abort (); | |
7412 | } | |
71dfc51f | 7413 | |
a3f97cbb JW |
7414 | return mem_loc_result; |
7415 | } | |
7416 | ||
956d6950 | 7417 | /* Return a descriptor that describes the concatenation of two locations. |
4401bf24 JL |
7418 | This is typically a complex variable. */ |
7419 | ||
7420 | static dw_loc_descr_ref | |
7421 | concat_loc_descriptor (x0, x1) | |
7422 | register rtx x0, x1; | |
7423 | { | |
7424 | dw_loc_descr_ref cc_loc_result = NULL; | |
7425 | ||
7426 | if (!is_pseudo_reg (x0) | |
7427 | && (GET_CODE (x0) != MEM || !is_pseudo_reg (XEXP (x0, 0)))) | |
7428 | add_loc_descr (&cc_loc_result, loc_descriptor (x0)); | |
7429 | add_loc_descr (&cc_loc_result, | |
7430 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x0)), 0)); | |
7431 | ||
7432 | if (!is_pseudo_reg (x1) | |
7433 | && (GET_CODE (x1) != MEM || !is_pseudo_reg (XEXP (x1, 0)))) | |
7434 | add_loc_descr (&cc_loc_result, loc_descriptor (x1)); | |
7435 | add_loc_descr (&cc_loc_result, | |
7436 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x1)), 0)); | |
7437 | ||
7438 | return cc_loc_result; | |
7439 | } | |
7440 | ||
a3f97cbb JW |
7441 | /* Output a proper Dwarf location descriptor for a variable or parameter |
7442 | which is either allocated in a register or in a memory location. For a | |
7443 | register, we just generate an OP_REG and the register number. For a | |
7444 | memory location we provide a Dwarf postfix expression describing how to | |
7445 | generate the (dynamic) address of the object onto the address stack. */ | |
71dfc51f | 7446 | |
a3f97cbb JW |
7447 | static dw_loc_descr_ref |
7448 | loc_descriptor (rtl) | |
7449 | register rtx rtl; | |
7450 | { | |
7451 | dw_loc_descr_ref loc_result = NULL; | |
7452 | switch (GET_CODE (rtl)) | |
7453 | { | |
7454 | case SUBREG: | |
a3f97cbb JW |
7455 | /* The case of a subreg may arise when we have a local (register) |
7456 | variable or a formal (register) parameter which doesn't quite fill | |
71dfc51f | 7457 | up an entire register. For now, just assume that it is |
a3f97cbb JW |
7458 | legitimate to make the Dwarf info refer to the whole register which |
7459 | contains the given subreg. */ | |
a3f97cbb | 7460 | rtl = XEXP (rtl, 0); |
71dfc51f | 7461 | |
556273e0 | 7462 | /* Fall through. */ |
a3f97cbb JW |
7463 | |
7464 | case REG: | |
5c90448c | 7465 | loc_result = reg_loc_descriptor (rtl); |
a3f97cbb JW |
7466 | break; |
7467 | ||
7468 | case MEM: | |
e60d4d7b | 7469 | loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl)); |
a3f97cbb JW |
7470 | break; |
7471 | ||
4401bf24 JL |
7472 | case CONCAT: |
7473 | loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1)); | |
7474 | break; | |
7475 | ||
a3f97cbb | 7476 | default: |
71dfc51f | 7477 | abort (); |
a3f97cbb | 7478 | } |
71dfc51f | 7479 | |
a3f97cbb JW |
7480 | return loc_result; |
7481 | } | |
7482 | ||
d8041cc8 RH |
7483 | /* Similar, but generate the descriptor from trees instead of rtl. |
7484 | This comes up particularly with variable length arrays. */ | |
7485 | ||
7486 | static dw_loc_descr_ref | |
7487 | loc_descriptor_from_tree (loc, addressp) | |
7488 | tree loc; | |
7489 | int addressp; | |
7490 | { | |
7491 | dw_loc_descr_ref ret = NULL; | |
7492 | int indirect_size = 0; | |
7493 | int unsignedp = TREE_UNSIGNED (TREE_TYPE (loc)); | |
7494 | enum dwarf_location_atom op; | |
7495 | ||
7496 | /* ??? Most of the time we do not take proper care for sign/zero | |
7497 | extending the values properly. Hopefully this won't be a real | |
7498 | problem... */ | |
7499 | ||
7500 | switch (TREE_CODE (loc)) | |
7501 | { | |
7502 | case ERROR_MARK: | |
7503 | break; | |
7504 | ||
7505 | case VAR_DECL: | |
7506 | case PARM_DECL: | |
7507 | { | |
7508 | rtx rtl = rtl_for_decl_location (loc); | |
7509 | enum machine_mode mode = DECL_MODE (loc); | |
7510 | ||
a97c9600 RH |
7511 | if (rtl == NULL_RTX) |
7512 | break; | |
7513 | else if (CONSTANT_P (rtl)) | |
d8041cc8 RH |
7514 | { |
7515 | ret = new_loc_descr (DW_OP_addr, 0, 0); | |
7516 | ret->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
7517 | ret->dw_loc_oprnd1.v.val_addr = rtl; | |
7518 | indirect_size = GET_MODE_SIZE (mode); | |
7519 | } | |
7520 | else | |
7521 | { | |
7522 | if (GET_CODE (rtl) == MEM) | |
7523 | { | |
7524 | indirect_size = GET_MODE_SIZE (mode); | |
7525 | rtl = XEXP (rtl, 0); | |
7526 | } | |
7527 | ret = mem_loc_descriptor (rtl, mode); | |
7528 | } | |
7529 | } | |
7530 | break; | |
7531 | ||
7532 | case INDIRECT_REF: | |
7533 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
7534 | indirect_size = GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (loc))); | |
7535 | break; | |
7536 | ||
7537 | case COMPONENT_REF: | |
7538 | case BIT_FIELD_REF: | |
7539 | case ARRAY_REF: | |
7540 | { | |
7541 | tree obj, offset; | |
7542 | HOST_WIDE_INT bitsize, bitpos, bytepos; | |
7543 | enum machine_mode mode; | |
7544 | int volatilep; | |
7545 | unsigned int alignment; | |
7546 | ||
7547 | obj = get_inner_reference (loc, &bitsize, &bitpos, &offset, &mode, | |
7548 | &unsignedp, &volatilep, &alignment); | |
7549 | ret = loc_descriptor_from_tree (obj, 1); | |
7550 | ||
7551 | if (offset != NULL_TREE) | |
7552 | { | |
7553 | /* Variable offset. */ | |
7554 | add_loc_descr (&ret, loc_descriptor_from_tree (offset, 0)); | |
7555 | add_loc_descr (&ret, new_loc_descr (DW_OP_plus, 0, 0)); | |
7556 | } | |
7557 | ||
7558 | if (addressp) | |
7559 | { | |
7560 | /* We cannot address anything not on a unit boundary. */ | |
7561 | if (bitpos % BITS_PER_UNIT != 0) | |
7562 | abort (); | |
7563 | } | |
7564 | else | |
7565 | { | |
7566 | if (bitpos % BITS_PER_UNIT != 0 | |
7567 | || bitsize % BITS_PER_UNIT != 0) | |
7568 | { | |
7569 | /* ??? We could handle this by loading and shifting etc. | |
7570 | Wait until someone needs it before expending the effort. */ | |
7571 | abort (); | |
7572 | } | |
7573 | ||
7574 | indirect_size = bitsize / BITS_PER_UNIT; | |
7575 | } | |
7576 | ||
7577 | bytepos = bitpos / BITS_PER_UNIT; | |
7578 | if (bytepos > 0) | |
7579 | add_loc_descr (&ret, new_loc_descr (DW_OP_plus_uconst, bytepos, 0)); | |
7580 | else if (bytepos < 0) | |
7581 | { | |
7582 | add_loc_descr (&ret, int_loc_descriptor (bytepos)); | |
7583 | add_loc_descr (&ret, new_loc_descr (DW_OP_plus, 0, 0)); | |
7584 | } | |
7585 | break; | |
7586 | } | |
7587 | ||
7588 | case INTEGER_CST: | |
7589 | if (host_integerp (loc, 0)) | |
7590 | ret = int_loc_descriptor (tree_low_cst (loc, 0)); | |
7591 | break; | |
7592 | break; | |
7593 | ||
7594 | case BIT_AND_EXPR: | |
7595 | op = DW_OP_and; | |
7596 | goto do_binop; | |
7597 | case BIT_XOR_EXPR: | |
7598 | op = DW_OP_xor; | |
7599 | goto do_binop; | |
7600 | case BIT_IOR_EXPR: | |
7601 | op = DW_OP_or; | |
7602 | goto do_binop; | |
7603 | case TRUNC_DIV_EXPR: | |
7604 | op = DW_OP_div; | |
7605 | goto do_binop; | |
7606 | case MINUS_EXPR: | |
7607 | op = DW_OP_minus; | |
7608 | goto do_binop; | |
7609 | case TRUNC_MOD_EXPR: | |
7610 | op = DW_OP_mod; | |
7611 | goto do_binop; | |
7612 | case MULT_EXPR: | |
7613 | op = DW_OP_mul; | |
7614 | goto do_binop; | |
7615 | case LSHIFT_EXPR: | |
7616 | op = DW_OP_shl; | |
7617 | goto do_binop; | |
7618 | case RSHIFT_EXPR: | |
7619 | op = (unsignedp ? DW_OP_shr : DW_OP_shra); | |
7620 | goto do_binop; | |
7621 | case PLUS_EXPR: | |
7622 | if (TREE_CODE (TREE_OPERAND (loc, 1)) == INTEGER_CST | |
7623 | && host_integerp (TREE_OPERAND (loc, 1), 0)) | |
7624 | { | |
7625 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
7626 | add_loc_descr (&ret, | |
7627 | new_loc_descr (DW_OP_plus_uconst, | |
7628 | tree_low_cst (TREE_OPERAND (loc, 1), | |
7629 | 0), | |
7630 | 0)); | |
7631 | break; | |
7632 | } | |
7633 | op = DW_OP_plus; | |
7634 | goto do_binop; | |
7635 | case LE_EXPR: | |
7636 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
7637 | break; | |
7638 | op = DW_OP_le; | |
7639 | goto do_binop; | |
7640 | case GE_EXPR: | |
7641 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
7642 | break; | |
7643 | op = DW_OP_ge; | |
7644 | goto do_binop; | |
7645 | case LT_EXPR: | |
7646 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
7647 | break; | |
7648 | op = DW_OP_lt; | |
7649 | goto do_binop; | |
7650 | case GT_EXPR: | |
7651 | if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0)))) | |
7652 | break; | |
7653 | op = DW_OP_gt; | |
7654 | goto do_binop; | |
7655 | case EQ_EXPR: | |
7656 | op = DW_OP_eq; | |
7657 | goto do_binop; | |
7658 | case NE_EXPR: | |
7659 | op = DW_OP_ne; | |
7660 | goto do_binop; | |
7661 | ||
7662 | do_binop: | |
7663 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
7664 | add_loc_descr (&ret, loc_descriptor_from_tree (TREE_OPERAND (loc, 1), 0)); | |
7665 | add_loc_descr (&ret, new_loc_descr (op, 0, 0)); | |
7666 | break; | |
7667 | ||
7668 | case BIT_NOT_EXPR: | |
7669 | op = DW_OP_not; | |
7670 | goto do_unop; | |
7671 | case ABS_EXPR: | |
7672 | op = DW_OP_abs; | |
7673 | goto do_unop; | |
7674 | case NEGATE_EXPR: | |
7675 | op = DW_OP_neg; | |
7676 | goto do_unop; | |
7677 | ||
7678 | do_unop: | |
7679 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
7680 | add_loc_descr (&ret, new_loc_descr (op, 0, 0)); | |
7681 | break; | |
7682 | ||
7683 | case MAX_EXPR: | |
7684 | loc = build (COND_EXPR, TREE_TYPE (loc), | |
7685 | build (LT_EXPR, integer_type_node, | |
7686 | TREE_OPERAND (loc, 0), TREE_OPERAND (loc, 1)), | |
7687 | TREE_OPERAND (loc, 1), TREE_OPERAND (loc, 0)); | |
7688 | /* FALLTHRU */ | |
7689 | ||
7690 | case COND_EXPR: | |
7691 | { | |
7692 | dw_loc_descr_ref bra_node, jump_node, tmp; | |
7693 | ||
7694 | ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0); | |
7695 | bra_node = new_loc_descr (DW_OP_bra, 0, 0); | |
7696 | add_loc_descr (&ret, bra_node); | |
7697 | ||
7698 | tmp = loc_descriptor_from_tree (TREE_OPERAND (loc, 2), 0); | |
7699 | add_loc_descr (&ret, tmp); | |
7700 | jump_node = new_loc_descr (DW_OP_skip, 0, 0); | |
7701 | add_loc_descr (&ret, jump_node); | |
7702 | ||
7703 | tmp = loc_descriptor_from_tree (TREE_OPERAND (loc, 1), 0); | |
7704 | add_loc_descr (&ret, tmp); | |
7705 | bra_node->dw_loc_oprnd1.val_class = dw_val_class_loc; | |
7706 | bra_node->dw_loc_oprnd1.v.val_loc = tmp; | |
7707 | ||
7708 | /* ??? Need a node to point the skip at. Use a nop. */ | |
7709 | tmp = new_loc_descr (DW_OP_nop, 0, 0); | |
7710 | add_loc_descr (&ret, tmp); | |
7711 | jump_node->dw_loc_oprnd1.val_class = dw_val_class_loc; | |
7712 | jump_node->dw_loc_oprnd1.v.val_loc = tmp; | |
7713 | } | |
7714 | break; | |
7715 | ||
7716 | default: | |
7717 | abort (); | |
7718 | } | |
7719 | ||
7720 | /* If we can't fill the request for an address, die. */ | |
7721 | if (addressp && indirect_size == 0) | |
7722 | abort (); | |
7723 | ||
7724 | /* If we've got an address and don't want one, dereference. */ | |
7725 | if (!addressp && indirect_size > 0) | |
7726 | { | |
7727 | if (indirect_size > DWARF2_ADDR_SIZE) | |
7728 | abort (); | |
7729 | if (indirect_size == DWARF2_ADDR_SIZE) | |
7730 | op = DW_OP_deref; | |
7731 | else | |
7732 | op = DW_OP_deref_size; | |
7733 | add_loc_descr (&ret, new_loc_descr (op, indirect_size, 0)); | |
7734 | } | |
7735 | ||
7736 | return ret; | |
7737 | } | |
7738 | ||
665f2503 | 7739 | /* Given a value, round it up to the lowest multiple of `boundary' |
a3f97cbb | 7740 | which is not less than the value itself. */ |
71dfc51f | 7741 | |
665f2503 | 7742 | static inline HOST_WIDE_INT |
a3f97cbb | 7743 | ceiling (value, boundary) |
665f2503 RK |
7744 | HOST_WIDE_INT value; |
7745 | unsigned int boundary; | |
a3f97cbb JW |
7746 | { |
7747 | return (((value + boundary - 1) / boundary) * boundary); | |
7748 | } | |
7749 | ||
7750 | /* Given a pointer to what is assumed to be a FIELD_DECL node, return a | |
7751 | pointer to the declared type for the relevant field variable, or return | |
7752 | `integer_type_node' if the given node turns out to be an | |
7753 | ERROR_MARK node. */ | |
71dfc51f RK |
7754 | |
7755 | static inline tree | |
a3f97cbb JW |
7756 | field_type (decl) |
7757 | register tree decl; | |
7758 | { | |
7759 | register tree type; | |
7760 | ||
7761 | if (TREE_CODE (decl) == ERROR_MARK) | |
7762 | return integer_type_node; | |
7763 | ||
7764 | type = DECL_BIT_FIELD_TYPE (decl); | |
71dfc51f | 7765 | if (type == NULL_TREE) |
a3f97cbb JW |
7766 | type = TREE_TYPE (decl); |
7767 | ||
7768 | return type; | |
7769 | } | |
7770 | ||
7771 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
7772 | node, return the alignment in bits for the type, or else return | |
7773 | BITS_PER_WORD if the node actually turns out to be an | |
7774 | ERROR_MARK node. */ | |
71dfc51f RK |
7775 | |
7776 | static inline unsigned | |
a3f97cbb JW |
7777 | simple_type_align_in_bits (type) |
7778 | register tree type; | |
7779 | { | |
7780 | return (TREE_CODE (type) != ERROR_MARK) ? TYPE_ALIGN (type) : BITS_PER_WORD; | |
7781 | } | |
7782 | ||
7783 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
7784 | node, return the size in bits for the type if it is a constant, or else | |
7785 | return the alignment for the type if the type's size is not constant, or | |
7786 | else return BITS_PER_WORD if the type actually turns out to be an | |
7787 | ERROR_MARK node. */ | |
71dfc51f | 7788 | |
665f2503 | 7789 | static inline unsigned HOST_WIDE_INT |
a3f97cbb JW |
7790 | simple_type_size_in_bits (type) |
7791 | register tree type; | |
7792 | { | |
7793 | if (TREE_CODE (type) == ERROR_MARK) | |
7794 | return BITS_PER_WORD; | |
7795 | else | |
7796 | { | |
7797 | register tree type_size_tree = TYPE_SIZE (type); | |
7798 | ||
665f2503 | 7799 | if (! host_integerp (type_size_tree, 1)) |
a3f97cbb JW |
7800 | return TYPE_ALIGN (type); |
7801 | ||
665f2503 | 7802 | return tree_low_cst (type_size_tree, 1); |
a3f97cbb JW |
7803 | } |
7804 | } | |
7805 | ||
7806 | /* Given a pointer to what is assumed to be a FIELD_DECL node, compute and | |
7807 | return the byte offset of the lowest addressed byte of the "containing | |
7808 | object" for the given FIELD_DECL, or return 0 if we are unable to | |
7809 | determine what that offset is, either because the argument turns out to | |
7810 | be a pointer to an ERROR_MARK node, or because the offset is actually | |
7811 | variable. (We can't handle the latter case just yet). */ | |
71dfc51f | 7812 | |
665f2503 | 7813 | static HOST_WIDE_INT |
a3f97cbb JW |
7814 | field_byte_offset (decl) |
7815 | register tree decl; | |
7816 | { | |
665f2503 RK |
7817 | unsigned int type_align_in_bytes; |
7818 | unsigned int type_align_in_bits; | |
7819 | unsigned HOST_WIDE_INT type_size_in_bits; | |
7820 | HOST_WIDE_INT object_offset_in_align_units; | |
7821 | HOST_WIDE_INT object_offset_in_bits; | |
7822 | HOST_WIDE_INT object_offset_in_bytes; | |
7823 | tree type; | |
7824 | tree field_size_tree; | |
7825 | HOST_WIDE_INT bitpos_int; | |
7826 | HOST_WIDE_INT deepest_bitpos; | |
7827 | unsigned HOST_WIDE_INT field_size_in_bits; | |
a3f97cbb JW |
7828 | |
7829 | if (TREE_CODE (decl) == ERROR_MARK) | |
7830 | return 0; | |
7831 | ||
7832 | if (TREE_CODE (decl) != FIELD_DECL) | |
7833 | abort (); | |
7834 | ||
7835 | type = field_type (decl); | |
a3f97cbb JW |
7836 | field_size_tree = DECL_SIZE (decl); |
7837 | ||
50352c9c BK |
7838 | /* If there was an error, the size could be zero. */ |
7839 | if (! field_size_tree) | |
7840 | { | |
7841 | if (errorcount) | |
7842 | return 0; | |
665f2503 | 7843 | |
50352c9c BK |
7844 | abort (); |
7845 | } | |
7846 | ||
556273e0 | 7847 | /* We cannot yet cope with fields whose positions are variable, so |
a3f97cbb JW |
7848 | for now, when we see such things, we simply return 0. Someday, we may |
7849 | be able to handle such cases, but it will be damn difficult. */ | |
665f2503 | 7850 | if (! host_integerp (bit_position (decl), 0)) |
a3f97cbb | 7851 | return 0; |
14a774a9 | 7852 | |
665f2503 | 7853 | bitpos_int = int_bit_position (decl); |
a3f97cbb | 7854 | |
14a774a9 | 7855 | /* If we don't know the size of the field, pretend it's a full word. */ |
665f2503 RK |
7856 | if (host_integerp (field_size_tree, 1)) |
7857 | field_size_in_bits = tree_low_cst (field_size_tree, 1); | |
14a774a9 RK |
7858 | else |
7859 | field_size_in_bits = BITS_PER_WORD; | |
a3f97cbb JW |
7860 | |
7861 | type_size_in_bits = simple_type_size_in_bits (type); | |
a3f97cbb JW |
7862 | type_align_in_bits = simple_type_align_in_bits (type); |
7863 | type_align_in_bytes = type_align_in_bits / BITS_PER_UNIT; | |
7864 | ||
7865 | /* Note that the GCC front-end doesn't make any attempt to keep track of | |
7866 | the starting bit offset (relative to the start of the containing | |
7867 | structure type) of the hypothetical "containing object" for a bit- | |
7868 | field. Thus, when computing the byte offset value for the start of the | |
556273e0 | 7869 | "containing object" of a bit-field, we must deduce this information on |
a3f97cbb JW |
7870 | our own. This can be rather tricky to do in some cases. For example, |
7871 | handling the following structure type definition when compiling for an | |
7872 | i386/i486 target (which only aligns long long's to 32-bit boundaries) | |
7873 | can be very tricky: | |
7874 | ||
7875 | struct S { int field1; long long field2:31; }; | |
7876 | ||
7877 | Fortunately, there is a simple rule-of-thumb which can be | |
7878 | used in such cases. When compiling for an i386/i486, GCC will allocate | |
556273e0 | 7879 | 8 bytes for the structure shown above. It decides to do this based upon |
a3f97cbb JW |
7880 | one simple rule for bit-field allocation. Quite simply, GCC allocates |
7881 | each "containing object" for each bit-field at the first (i.e. lowest | |
7882 | addressed) legitimate alignment boundary (based upon the required | |
7883 | minimum alignment for the declared type of the field) which it can | |
7884 | possibly use, subject to the condition that there is still enough | |
7885 | available space remaining in the containing object (when allocated at | |
7886 | the selected point) to fully accommodate all of the bits of the | |
7887 | bit-field itself. This simple rule makes it obvious why GCC allocates | |
7888 | 8 bytes for each object of the structure type shown above. When looking | |
7889 | for a place to allocate the "containing object" for `field2', the | |
7890 | compiler simply tries to allocate a 64-bit "containing object" at each | |
7891 | successive 32-bit boundary (starting at zero) until it finds a place to | |
7892 | allocate that 64- bit field such that at least 31 contiguous (and | |
7893 | previously unallocated) bits remain within that selected 64 bit field. | |
7894 | (As it turns out, for the example above, the compiler finds that it is | |
7895 | OK to allocate the "containing object" 64-bit field at bit-offset zero | |
7896 | within the structure type.) Here we attempt to work backwards from the | |
556273e0 | 7897 | limited set of facts we're given, and we try to deduce from those facts, |
a3f97cbb | 7898 | where GCC must have believed that the containing object started (within |
556273e0 KH |
7899 | the structure type). The value we deduce is then used (by the callers of |
7900 | this routine) to generate DW_AT_location and DW_AT_bit_offset attributes | |
a3f97cbb JW |
7901 | for fields (both bit-fields and, in the case of DW_AT_location, regular |
7902 | fields as well). */ | |
7903 | ||
7904 | /* Figure out the bit-distance from the start of the structure to the | |
7905 | "deepest" bit of the bit-field. */ | |
7906 | deepest_bitpos = bitpos_int + field_size_in_bits; | |
7907 | ||
7908 | /* This is the tricky part. Use some fancy footwork to deduce where the | |
7909 | lowest addressed bit of the containing object must be. */ | |
7910 | object_offset_in_bits | |
7911 | = ceiling (deepest_bitpos, type_align_in_bits) - type_size_in_bits; | |
7912 | ||
7913 | /* Compute the offset of the containing object in "alignment units". */ | |
7914 | object_offset_in_align_units = object_offset_in_bits / type_align_in_bits; | |
7915 | ||
7916 | /* Compute the offset of the containing object in bytes. */ | |
7917 | object_offset_in_bytes = object_offset_in_align_units * type_align_in_bytes; | |
7918 | ||
7919 | return object_offset_in_bytes; | |
7920 | } | |
a3f97cbb | 7921 | \f |
71dfc51f RK |
7922 | /* The following routines define various Dwarf attributes and any data |
7923 | associated with them. */ | |
a3f97cbb | 7924 | |
ef76d03b | 7925 | /* Add a location description attribute value to a DIE. |
a3f97cbb | 7926 | |
ef76d03b | 7927 | This emits location attributes suitable for whole variables and |
a3f97cbb JW |
7928 | whole parameters. Note that the location attributes for struct fields are |
7929 | generated by the routine `data_member_location_attribute' below. */ | |
71dfc51f | 7930 | |
a3f97cbb | 7931 | static void |
ef76d03b | 7932 | add_AT_location_description (die, attr_kind, rtl) |
a3f97cbb | 7933 | dw_die_ref die; |
ef76d03b | 7934 | enum dwarf_attribute attr_kind; |
a3f97cbb JW |
7935 | register rtx rtl; |
7936 | { | |
a3f97cbb JW |
7937 | /* Handle a special case. If we are about to output a location descriptor |
7938 | for a variable or parameter which has been optimized out of existence, | |
6a7a9f01 | 7939 | don't do that. A variable which has been optimized out |
a3f97cbb JW |
7940 | of existence will have a DECL_RTL value which denotes a pseudo-reg. |
7941 | Currently, in some rare cases, variables can have DECL_RTL values which | |
7942 | look like (MEM (REG pseudo-reg#)). These cases are due to bugs | |
556273e0 | 7943 | elsewhere in the compiler. We treat such cases as if the variable(s) in |
6a7a9f01 | 7944 | question had been optimized out of existence. */ |
a3f97cbb | 7945 | |
6a7a9f01 JM |
7946 | if (is_pseudo_reg (rtl) |
7947 | || (GET_CODE (rtl) == MEM | |
4401bf24 | 7948 | && is_pseudo_reg (XEXP (rtl, 0))) |
556273e0 | 7949 | /* This can happen for a PARM_DECL with a DECL_INCOMING_RTL which |
bce8fed7 JL |
7950 | references the internal argument pointer (a pseudo) in a function |
7951 | where all references to the internal argument pointer were | |
7952 | eliminated via the optimizers. */ | |
7953 | || (GET_CODE (rtl) == MEM | |
7954 | && GET_CODE (XEXP (rtl, 0)) == PLUS | |
7955 | && is_pseudo_reg (XEXP (XEXP (rtl, 0), 0))) | |
4401bf24 JL |
7956 | || (GET_CODE (rtl) == CONCAT |
7957 | && is_pseudo_reg (XEXP (rtl, 0)) | |
7958 | && is_pseudo_reg (XEXP (rtl, 1)))) | |
6a7a9f01 | 7959 | return; |
a3f97cbb | 7960 | |
6a7a9f01 | 7961 | add_AT_loc (die, attr_kind, loc_descriptor (rtl)); |
a3f97cbb JW |
7962 | } |
7963 | ||
7964 | /* Attach the specialized form of location attribute used for data | |
7965 | members of struct and union types. In the special case of a | |
7966 | FIELD_DECL node which represents a bit-field, the "offset" part | |
7967 | of this special location descriptor must indicate the distance | |
7968 | in bytes from the lowest-addressed byte of the containing struct | |
7969 | or union type to the lowest-addressed byte of the "containing | |
7970 | object" for the bit-field. (See the `field_byte_offset' function | |
7971 | above).. For any given bit-field, the "containing object" is a | |
7972 | hypothetical object (of some integral or enum type) within which | |
7973 | the given bit-field lives. The type of this hypothetical | |
7974 | "containing object" is always the same as the declared type of | |
7975 | the individual bit-field itself (for GCC anyway... the DWARF | |
7976 | spec doesn't actually mandate this). Note that it is the size | |
7977 | (in bytes) of the hypothetical "containing object" which will | |
7978 | be given in the DW_AT_byte_size attribute for this bit-field. | |
7979 | (See the `byte_size_attribute' function below.) It is also used | |
7980 | when calculating the value of the DW_AT_bit_offset attribute. | |
7981 | (See the `bit_offset_attribute' function below). */ | |
71dfc51f | 7982 | |
a3f97cbb JW |
7983 | static void |
7984 | add_data_member_location_attribute (die, decl) | |
7985 | register dw_die_ref die; | |
7986 | register tree decl; | |
7987 | { | |
61b32c02 | 7988 | register unsigned long offset; |
a3f97cbb JW |
7989 | register dw_loc_descr_ref loc_descr; |
7990 | register enum dwarf_location_atom op; | |
7991 | ||
61b32c02 | 7992 | if (TREE_CODE (decl) == TREE_VEC) |
665f2503 | 7993 | offset = tree_low_cst (BINFO_OFFSET (decl), 0); |
61b32c02 JM |
7994 | else |
7995 | offset = field_byte_offset (decl); | |
7996 | ||
a3f97cbb JW |
7997 | /* The DWARF2 standard says that we should assume that the structure address |
7998 | is already on the stack, so we can specify a structure field address | |
7999 | by using DW_OP_plus_uconst. */ | |
71dfc51f | 8000 | |
a3f97cbb JW |
8001 | #ifdef MIPS_DEBUGGING_INFO |
8002 | /* ??? The SGI dwarf reader does not handle the DW_OP_plus_uconst operator | |
8003 | correctly. It works only if we leave the offset on the stack. */ | |
8004 | op = DW_OP_constu; | |
8005 | #else | |
8006 | op = DW_OP_plus_uconst; | |
8007 | #endif | |
71dfc51f | 8008 | |
a3f97cbb JW |
8009 | loc_descr = new_loc_descr (op, offset, 0); |
8010 | add_AT_loc (die, DW_AT_data_member_location, loc_descr); | |
8011 | } | |
8012 | ||
8013 | /* Attach an DW_AT_const_value attribute for a variable or a parameter which | |
8014 | does not have a "location" either in memory or in a register. These | |
8015 | things can arise in GNU C when a constant is passed as an actual parameter | |
8016 | to an inlined function. They can also arise in C++ where declared | |
8017 | constants do not necessarily get memory "homes". */ | |
71dfc51f | 8018 | |
a3f97cbb JW |
8019 | static void |
8020 | add_const_value_attribute (die, rtl) | |
8021 | register dw_die_ref die; | |
8022 | register rtx rtl; | |
8023 | { | |
8024 | switch (GET_CODE (rtl)) | |
8025 | { | |
8026 | case CONST_INT: | |
8027 | /* Note that a CONST_INT rtx could represent either an integer or a | |
8028 | floating-point constant. A CONST_INT is used whenever the constant | |
8029 | will fit into a single word. In all such cases, the original mode | |
8030 | of the constant value is wiped out, and the CONST_INT rtx is | |
8031 | assigned VOIDmode. */ | |
8032 | add_AT_unsigned (die, DW_AT_const_value, (unsigned) INTVAL (rtl)); | |
8033 | break; | |
8034 | ||
8035 | case CONST_DOUBLE: | |
8036 | /* Note that a CONST_DOUBLE rtx could represent either an integer or a | |
8037 | floating-point constant. A CONST_DOUBLE is used whenever the | |
8038 | constant requires more than one word in order to be adequately | |
469ac993 JM |
8039 | represented. We output CONST_DOUBLEs as blocks. */ |
8040 | { | |
8041 | register enum machine_mode mode = GET_MODE (rtl); | |
8042 | ||
8043 | if (GET_MODE_CLASS (mode) == MODE_FLOAT) | |
8044 | { | |
e389897b | 8045 | register unsigned length = GET_MODE_SIZE (mode) / 4; |
1bfb5f8f | 8046 | long *array = (long *) xmalloc (sizeof (long) * length); |
71dfc51f | 8047 | REAL_VALUE_TYPE rv; |
469ac993 | 8048 | |
71dfc51f | 8049 | REAL_VALUE_FROM_CONST_DOUBLE (rv, rtl); |
469ac993 JM |
8050 | switch (mode) |
8051 | { | |
8052 | case SFmode: | |
71dfc51f | 8053 | REAL_VALUE_TO_TARGET_SINGLE (rv, array[0]); |
469ac993 JM |
8054 | break; |
8055 | ||
8056 | case DFmode: | |
71dfc51f | 8057 | REAL_VALUE_TO_TARGET_DOUBLE (rv, array); |
469ac993 JM |
8058 | break; |
8059 | ||
8060 | case XFmode: | |
8061 | case TFmode: | |
71dfc51f | 8062 | REAL_VALUE_TO_TARGET_LONG_DOUBLE (rv, array); |
469ac993 JM |
8063 | break; |
8064 | ||
8065 | default: | |
8066 | abort (); | |
8067 | } | |
8068 | ||
469ac993 JM |
8069 | add_AT_float (die, DW_AT_const_value, length, array); |
8070 | } | |
8071 | else | |
8072 | add_AT_long_long (die, DW_AT_const_value, | |
8073 | CONST_DOUBLE_HIGH (rtl), CONST_DOUBLE_LOW (rtl)); | |
8074 | } | |
a3f97cbb JW |
8075 | break; |
8076 | ||
8077 | case CONST_STRING: | |
8078 | add_AT_string (die, DW_AT_const_value, XSTR (rtl, 0)); | |
8079 | break; | |
8080 | ||
8081 | case SYMBOL_REF: | |
8082 | case LABEL_REF: | |
8083 | case CONST: | |
1865dbb5 | 8084 | add_AT_addr (die, DW_AT_const_value, save_rtx (rtl)); |
a3f97cbb JW |
8085 | break; |
8086 | ||
8087 | case PLUS: | |
8088 | /* In cases where an inlined instance of an inline function is passed | |
8089 | the address of an `auto' variable (which is local to the caller) we | |
8090 | can get a situation where the DECL_RTL of the artificial local | |
8091 | variable (for the inlining) which acts as a stand-in for the | |
8092 | corresponding formal parameter (of the inline function) will look | |
8093 | like (plus:SI (reg:SI FRAME_PTR) (const_int ...)). This is not | |
556273e0 KH |
8094 | exactly a compile-time constant expression, but it isn't the address |
8095 | of the (artificial) local variable either. Rather, it represents the | |
a3f97cbb | 8096 | *value* which the artificial local variable always has during its |
556273e0 | 8097 | lifetime. We currently have no way to represent such quasi-constant |
6a7a9f01 | 8098 | values in Dwarf, so for now we just punt and generate nothing. */ |
a3f97cbb JW |
8099 | break; |
8100 | ||
8101 | default: | |
8102 | /* No other kinds of rtx should be possible here. */ | |
8103 | abort (); | |
8104 | } | |
8105 | ||
8106 | } | |
8107 | ||
d8041cc8 RH |
8108 | static rtx |
8109 | rtl_for_decl_location (decl) | |
8110 | tree decl; | |
a3f97cbb JW |
8111 | { |
8112 | register rtx rtl; | |
71dfc51f | 8113 | |
a3f97cbb JW |
8114 | /* Here we have to decide where we are going to say the parameter "lives" |
8115 | (as far as the debugger is concerned). We only have a couple of | |
8116 | choices. GCC provides us with DECL_RTL and with DECL_INCOMING_RTL. | |
71dfc51f | 8117 | |
556273e0 | 8118 | DECL_RTL normally indicates where the parameter lives during most of the |
71dfc51f | 8119 | activation of the function. If optimization is enabled however, this |
556273e0 | 8120 | could be either NULL or else a pseudo-reg. Both of those cases indicate |
a3f97cbb JW |
8121 | that the parameter doesn't really live anywhere (as far as the code |
8122 | generation parts of GCC are concerned) during most of the function's | |
8123 | activation. That will happen (for example) if the parameter is never | |
71dfc51f RK |
8124 | referenced within the function. |
8125 | ||
8126 | We could just generate a location descriptor here for all non-NULL | |
8127 | non-pseudo values of DECL_RTL and ignore all of the rest, but we can be | |
8128 | a little nicer than that if we also consider DECL_INCOMING_RTL in cases | |
8129 | where DECL_RTL is NULL or is a pseudo-reg. | |
8130 | ||
8131 | Note however that we can only get away with using DECL_INCOMING_RTL as | |
8132 | a backup substitute for DECL_RTL in certain limited cases. In cases | |
8133 | where DECL_ARG_TYPE (decl) indicates the same type as TREE_TYPE (decl), | |
8134 | we can be sure that the parameter was passed using the same type as it is | |
8135 | declared to have within the function, and that its DECL_INCOMING_RTL | |
8136 | points us to a place where a value of that type is passed. | |
8137 | ||
8138 | In cases where DECL_ARG_TYPE (decl) and TREE_TYPE (decl) are different, | |
8139 | we cannot (in general) use DECL_INCOMING_RTL as a substitute for DECL_RTL | |
8140 | because in these cases DECL_INCOMING_RTL points us to a value of some | |
8141 | type which is *different* from the type of the parameter itself. Thus, | |
8142 | if we tried to use DECL_INCOMING_RTL to generate a location attribute in | |
8143 | such cases, the debugger would end up (for example) trying to fetch a | |
8144 | `float' from a place which actually contains the first part of a | |
8145 | `double'. That would lead to really incorrect and confusing | |
8146 | output at debug-time. | |
8147 | ||
8148 | So, in general, we *do not* use DECL_INCOMING_RTL as a backup for DECL_RTL | |
8149 | in cases where DECL_ARG_TYPE (decl) != TREE_TYPE (decl). There | |
8150 | are a couple of exceptions however. On little-endian machines we can | |
8151 | get away with using DECL_INCOMING_RTL even when DECL_ARG_TYPE (decl) is | |
8152 | not the same as TREE_TYPE (decl), but only when DECL_ARG_TYPE (decl) is | |
8153 | an integral type that is smaller than TREE_TYPE (decl). These cases arise | |
8154 | when (on a little-endian machine) a non-prototyped function has a | |
8155 | parameter declared to be of type `short' or `char'. In such cases, | |
8156 | TREE_TYPE (decl) will be `short' or `char', DECL_ARG_TYPE (decl) will | |
8157 | be `int', and DECL_INCOMING_RTL will point to the lowest-order byte of the | |
8158 | passed `int' value. If the debugger then uses that address to fetch | |
8159 | a `short' or a `char' (on a little-endian machine) the result will be | |
8160 | the correct data, so we allow for such exceptional cases below. | |
8161 | ||
8162 | Note that our goal here is to describe the place where the given formal | |
8163 | parameter lives during most of the function's activation (i.e. between | |
8164 | the end of the prologue and the start of the epilogue). We'll do that | |
8165 | as best as we can. Note however that if the given formal parameter is | |
8166 | modified sometime during the execution of the function, then a stack | |
8167 | backtrace (at debug-time) will show the function as having been | |
8168 | called with the *new* value rather than the value which was | |
8169 | originally passed in. This happens rarely enough that it is not | |
8170 | a major problem, but it *is* a problem, and I'd like to fix it. | |
8171 | ||
8172 | A future version of dwarf2out.c may generate two additional | |
8173 | attributes for any given DW_TAG_formal_parameter DIE which will | |
8174 | describe the "passed type" and the "passed location" for the | |
8175 | given formal parameter in addition to the attributes we now | |
8176 | generate to indicate the "declared type" and the "active | |
8177 | location" for each parameter. This additional set of attributes | |
8178 | could be used by debuggers for stack backtraces. Separately, note | |
8179 | that sometimes DECL_RTL can be NULL and DECL_INCOMING_RTL can be | |
8180 | NULL also. This happens (for example) for inlined-instances of | |
8181 | inline function formal parameters which are never referenced. | |
8182 | This really shouldn't be happening. All PARM_DECL nodes should | |
8183 | get valid non-NULL DECL_INCOMING_RTL values, but integrate.c | |
8184 | doesn't currently generate these values for inlined instances of | |
8185 | inline function parameters, so when we see such cases, we are | |
956d6950 | 8186 | just out-of-luck for the time being (until integrate.c |
a3f97cbb JW |
8187 | gets fixed). */ |
8188 | ||
8189 | /* Use DECL_RTL as the "location" unless we find something better. */ | |
8190 | rtl = DECL_RTL (decl); | |
8191 | ||
8192 | if (TREE_CODE (decl) == PARM_DECL) | |
8193 | { | |
8194 | if (rtl == NULL_RTX || is_pseudo_reg (rtl)) | |
8195 | { | |
d8041cc8 RH |
8196 | tree declared_type = type_main_variant (TREE_TYPE (decl)); |
8197 | tree passed_type = type_main_variant (DECL_ARG_TYPE (decl)); | |
a3f97cbb | 8198 | |
71dfc51f | 8199 | /* This decl represents a formal parameter which was optimized out. |
a3f97cbb JW |
8200 | Note that DECL_INCOMING_RTL may be NULL in here, but we handle |
8201 | all* cases where (rtl == NULL_RTX) just below. */ | |
8202 | if (declared_type == passed_type) | |
71dfc51f RK |
8203 | rtl = DECL_INCOMING_RTL (decl); |
8204 | else if (! BYTES_BIG_ENDIAN | |
8205 | && TREE_CODE (declared_type) == INTEGER_TYPE | |
555b6442 HPN |
8206 | && (GET_MODE_SIZE (TYPE_MODE (declared_type)) |
8207 | <= GET_MODE_SIZE (TYPE_MODE (passed_type)))) | |
556273e0 | 8208 | rtl = DECL_INCOMING_RTL (decl); |
a3f97cbb | 8209 | } |
5a904a61 JW |
8210 | |
8211 | /* If the parm was passed in registers, but lives on the stack, then | |
8212 | make a big endian correction if the mode of the type of the | |
8213 | parameter is not the same as the mode of the rtl. */ | |
8214 | /* ??? This is the same series of checks that are made in dbxout.c before | |
8215 | we reach the big endian correction code there. It isn't clear if all | |
8216 | of these checks are necessary here, but keeping them all is the safe | |
8217 | thing to do. */ | |
8218 | else if (GET_CODE (rtl) == MEM | |
8219 | && XEXP (rtl, 0) != const0_rtx | |
8220 | && ! CONSTANT_P (XEXP (rtl, 0)) | |
8221 | /* Not passed in memory. */ | |
8222 | && GET_CODE (DECL_INCOMING_RTL (decl)) != MEM | |
8223 | /* Not passed by invisible reference. */ | |
8224 | && (GET_CODE (XEXP (rtl, 0)) != REG | |
8225 | || REGNO (XEXP (rtl, 0)) == HARD_FRAME_POINTER_REGNUM | |
8226 | || REGNO (XEXP (rtl, 0)) == STACK_POINTER_REGNUM | |
8227 | #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM | |
8228 | || REGNO (XEXP (rtl, 0)) == ARG_POINTER_REGNUM | |
8229 | #endif | |
8230 | ) | |
8231 | /* Big endian correction check. */ | |
8232 | && BYTES_BIG_ENDIAN | |
8233 | && TYPE_MODE (TREE_TYPE (decl)) != GET_MODE (rtl) | |
8234 | && (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (decl))) | |
8235 | < UNITS_PER_WORD)) | |
8236 | { | |
8237 | int offset = (UNITS_PER_WORD | |
8238 | - GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (decl)))); | |
8239 | rtl = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (decl)), | |
8240 | plus_constant (XEXP (rtl, 0), offset)); | |
8241 | } | |
a3f97cbb | 8242 | } |
71dfc51f | 8243 | |
d8041cc8 RH |
8244 | if (rtl != NULL_RTX) |
8245 | { | |
8246 | rtl = eliminate_regs (rtl, 0, NULL_RTX); | |
6a7a9f01 | 8247 | #ifdef LEAF_REG_REMAP |
d8041cc8 RH |
8248 | if (current_function_uses_only_leaf_regs) |
8249 | leaf_renumber_regs_insn (rtl); | |
6a7a9f01 | 8250 | #endif |
d8041cc8 RH |
8251 | } |
8252 | ||
8253 | return rtl; | |
8254 | } | |
8255 | ||
8256 | /* Generate *either* an DW_AT_location attribute or else an DW_AT_const_value | |
8257 | data attribute for a variable or a parameter. We generate the | |
8258 | DW_AT_const_value attribute only in those cases where the given variable | |
8259 | or parameter does not have a true "location" either in memory or in a | |
8260 | register. This can happen (for example) when a constant is passed as an | |
8261 | actual argument in a call to an inline function. (It's possible that | |
8262 | these things can crop up in other ways also.) Note that one type of | |
8263 | constant value which can be passed into an inlined function is a constant | |
8264 | pointer. This can happen for example if an actual argument in an inlined | |
8265 | function call evaluates to a compile-time constant address. */ | |
8266 | ||
8267 | static void | |
8268 | add_location_or_const_value_attribute (die, decl) | |
8269 | register dw_die_ref die; | |
8270 | register tree decl; | |
8271 | { | |
8272 | register rtx rtl; | |
8273 | ||
8274 | if (TREE_CODE (decl) == ERROR_MARK) | |
8275 | return; | |
8276 | ||
8277 | if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL) | |
8278 | abort (); | |
8279 | ||
8280 | rtl = rtl_for_decl_location (decl); | |
a97c9600 RH |
8281 | if (rtl == NULL_RTX) |
8282 | return; | |
6a7a9f01 | 8283 | |
a3f97cbb JW |
8284 | switch (GET_CODE (rtl)) |
8285 | { | |
e9a25f70 JL |
8286 | case ADDRESSOF: |
8287 | /* The address of a variable that was optimized away; don't emit | |
8288 | anything. */ | |
8289 | break; | |
8290 | ||
a3f97cbb JW |
8291 | case CONST_INT: |
8292 | case CONST_DOUBLE: | |
8293 | case CONST_STRING: | |
8294 | case SYMBOL_REF: | |
8295 | case LABEL_REF: | |
8296 | case CONST: | |
8297 | case PLUS: | |
8298 | /* DECL_RTL could be (plus (reg ...) (const_int ...)) */ | |
8299 | add_const_value_attribute (die, rtl); | |
8300 | break; | |
8301 | ||
8302 | case MEM: | |
8303 | case REG: | |
8304 | case SUBREG: | |
4401bf24 | 8305 | case CONCAT: |
ef76d03b | 8306 | add_AT_location_description (die, DW_AT_location, rtl); |
a3f97cbb JW |
8307 | break; |
8308 | ||
8309 | default: | |
71dfc51f | 8310 | abort (); |
a3f97cbb JW |
8311 | } |
8312 | } | |
8313 | ||
1bfb5f8f JM |
8314 | /* If we don't have a copy of this variable in memory for some reason (such |
8315 | as a C++ member constant that doesn't have an out-of-line definition), | |
8316 | we should tell the debugger about the constant value. */ | |
8317 | ||
8318 | static void | |
8319 | tree_add_const_value_attribute (var_die, decl) | |
8320 | dw_die_ref var_die; | |
8321 | tree decl; | |
8322 | { | |
8323 | tree init = DECL_INITIAL (decl); | |
8324 | tree type = TREE_TYPE (decl); | |
8325 | ||
8326 | if (TREE_READONLY (decl) && ! TREE_THIS_VOLATILE (decl) && init | |
8327 | && initializer_constant_valid_p (init, type) == null_pointer_node) | |
8328 | /* OK */; | |
8329 | else | |
8330 | return; | |
8331 | ||
8332 | switch (TREE_CODE (type)) | |
8333 | { | |
8334 | case INTEGER_TYPE: | |
8335 | if (host_integerp (init, 0)) | |
8336 | add_AT_unsigned (var_die, DW_AT_const_value, | |
8337 | TREE_INT_CST_LOW (init)); | |
8338 | else | |
8339 | add_AT_long_long (var_die, DW_AT_const_value, | |
8340 | TREE_INT_CST_HIGH (init), | |
8341 | TREE_INT_CST_LOW (init)); | |
8342 | break; | |
8343 | ||
8344 | default:; | |
8345 | } | |
8346 | } | |
8347 | ||
a3f97cbb JW |
8348 | /* Generate an DW_AT_name attribute given some string value to be included as |
8349 | the value of the attribute. */ | |
71dfc51f RK |
8350 | |
8351 | static inline void | |
a3f97cbb JW |
8352 | add_name_attribute (die, name_string) |
8353 | register dw_die_ref die; | |
d560ee52 | 8354 | register const char *name_string; |
a3f97cbb | 8355 | { |
71dfc51f | 8356 | if (name_string != NULL && *name_string != 0) |
14a774a9 RK |
8357 | { |
8358 | if (demangle_name_func) | |
8359 | name_string = (*demangle_name_func) (name_string); | |
8360 | ||
8361 | add_AT_string (die, DW_AT_name, name_string); | |
8362 | } | |
a3f97cbb JW |
8363 | } |
8364 | ||
8365 | /* Given a tree node describing an array bound (either lower or upper) output | |
466446b0 | 8366 | a representation for that bound. */ |
71dfc51f | 8367 | |
a3f97cbb JW |
8368 | static void |
8369 | add_bound_info (subrange_die, bound_attr, bound) | |
8370 | register dw_die_ref subrange_die; | |
8371 | register enum dwarf_attribute bound_attr; | |
8372 | register tree bound; | |
8373 | { | |
ef76d03b JW |
8374 | /* If this is an Ada unconstrained array type, then don't emit any debug |
8375 | info because the array bounds are unknown. They are parameterized when | |
8376 | the type is instantiated. */ | |
8377 | if (contains_placeholder_p (bound)) | |
8378 | return; | |
8379 | ||
a3f97cbb JW |
8380 | switch (TREE_CODE (bound)) |
8381 | { | |
8382 | case ERROR_MARK: | |
8383 | return; | |
8384 | ||
8385 | /* All fixed-bounds are represented by INTEGER_CST nodes. */ | |
8386 | case INTEGER_CST: | |
665f2503 RK |
8387 | if (! host_integerp (bound, 0) |
8388 | || (bound_attr == DW_AT_lower_bound | |
28985b81 | 8389 | && (((is_c_family () || is_java ()) && integer_zerop (bound)) |
665f2503 RK |
8390 | || (is_fortran () && integer_onep (bound))))) |
8391 | /* use the default */ | |
8392 | ; | |
141719a8 | 8393 | else |
665f2503 | 8394 | add_AT_unsigned (subrange_die, bound_attr, tree_low_cst (bound, 0)); |
a3f97cbb JW |
8395 | break; |
8396 | ||
b1ccbc24 | 8397 | case CONVERT_EXPR: |
a3f97cbb | 8398 | case NOP_EXPR: |
b1ccbc24 RK |
8399 | case NON_LVALUE_EXPR: |
8400 | add_bound_info (subrange_die, bound_attr, TREE_OPERAND (bound, 0)); | |
8401 | break; | |
556273e0 | 8402 | |
a3f97cbb JW |
8403 | case SAVE_EXPR: |
8404 | /* If optimization is turned on, the SAVE_EXPRs that describe how to | |
466446b0 JM |
8405 | access the upper bound values may be bogus. If they refer to a |
8406 | register, they may only describe how to get at these values at the | |
8407 | points in the generated code right after they have just been | |
8408 | computed. Worse yet, in the typical case, the upper bound values | |
8409 | will not even *be* computed in the optimized code (though the | |
8410 | number of elements will), so these SAVE_EXPRs are entirely | |
8411 | bogus. In order to compensate for this fact, we check here to see | |
8412 | if optimization is enabled, and if so, we don't add an attribute | |
8413 | for the (unknown and unknowable) upper bound. This should not | |
8414 | cause too much trouble for existing (stupid?) debuggers because | |
8415 | they have to deal with empty upper bounds location descriptions | |
8416 | anyway in order to be able to deal with incomplete array types. | |
8417 | Of course an intelligent debugger (GDB?) should be able to | |
8418 | comprehend that a missing upper bound specification in a array | |
8419 | type used for a storage class `auto' local array variable | |
8420 | indicates that the upper bound is both unknown (at compile- time) | |
8421 | and unknowable (at run-time) due to optimization. | |
8422 | ||
8423 | We assume that a MEM rtx is safe because gcc wouldn't put the | |
8424 | value there unless it was going to be used repeatedly in the | |
8425 | function, i.e. for cleanups. */ | |
1cfdcc15 JM |
8426 | if (! optimize || (SAVE_EXPR_RTL (bound) |
8427 | && GET_CODE (SAVE_EXPR_RTL (bound)) == MEM)) | |
a3f97cbb | 8428 | { |
466446b0 JM |
8429 | register dw_die_ref ctx = lookup_decl_die (current_function_decl); |
8430 | register dw_die_ref decl_die = new_die (DW_TAG_variable, ctx); | |
f5963e61 JL |
8431 | register rtx loc = SAVE_EXPR_RTL (bound); |
8432 | ||
8433 | /* If the RTL for the SAVE_EXPR is memory, handle the case where | |
8434 | it references an outer function's frame. */ | |
8435 | ||
8436 | if (GET_CODE (loc) == MEM) | |
8437 | { | |
8438 | rtx new_addr = fix_lexical_addr (XEXP (loc, 0), bound); | |
8439 | ||
8440 | if (XEXP (loc, 0) != new_addr) | |
c5c76735 | 8441 | loc = gen_rtx_MEM (GET_MODE (loc), new_addr); |
f5963e61 JL |
8442 | } |
8443 | ||
466446b0 JM |
8444 | add_AT_flag (decl_die, DW_AT_artificial, 1); |
8445 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
f5963e61 | 8446 | add_AT_location_description (decl_die, DW_AT_location, loc); |
466446b0 | 8447 | add_AT_die_ref (subrange_die, bound_attr, decl_die); |
a3f97cbb | 8448 | } |
71dfc51f RK |
8449 | |
8450 | /* Else leave out the attribute. */ | |
a3f97cbb | 8451 | break; |
3f76745e | 8452 | |
ef76d03b | 8453 | case VAR_DECL: |
d8041cc8 RH |
8454 | case PARM_DECL: |
8455 | { | |
8456 | dw_die_ref decl_die = lookup_decl_die (bound); | |
8457 | ||
8458 | /* ??? Can this happen, or should the variable have been bound | |
8459 | first? Probably it can, since I imagine that we try to create | |
8460 | the types of parameters in the order in which they exist in | |
8461 | the list, and won't have created a forward reference to a | |
8462 | later parameter. */ | |
8463 | if (decl_die != NULL) | |
8464 | add_AT_die_ref (subrange_die, bound_attr, decl_die); | |
8465 | break; | |
8466 | } | |
ef76d03b | 8467 | |
3f76745e | 8468 | default: |
d8041cc8 RH |
8469 | { |
8470 | /* Otherwise try to create a stack operation procedure to | |
8471 | evaluate the value of the array bound. */ | |
8472 | ||
8473 | dw_die_ref ctx, decl_die; | |
8474 | dw_loc_descr_ref loc; | |
8475 | ||
8476 | loc = loc_descriptor_from_tree (bound, 0); | |
8477 | if (loc == NULL) | |
8478 | break; | |
8479 | ||
8480 | ctx = lookup_decl_die (current_function_decl); | |
8481 | ||
8482 | decl_die = new_die (DW_TAG_variable, ctx); | |
8483 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
8484 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
8485 | add_AT_loc (decl_die, DW_AT_location, loc); | |
8486 | ||
8487 | add_AT_die_ref (subrange_die, bound_attr, decl_die); | |
8488 | break; | |
8489 | } | |
a3f97cbb JW |
8490 | } |
8491 | } | |
8492 | ||
8493 | /* Note that the block of subscript information for an array type also | |
8494 | includes information about the element type of type given array type. */ | |
71dfc51f | 8495 | |
a3f97cbb JW |
8496 | static void |
8497 | add_subscript_info (type_die, type) | |
8498 | register dw_die_ref type_die; | |
8499 | register tree type; | |
8500 | { | |
081f5e7e | 8501 | #ifndef MIPS_DEBUGGING_INFO |
a3f97cbb | 8502 | register unsigned dimension_number; |
081f5e7e | 8503 | #endif |
a3f97cbb JW |
8504 | register tree lower, upper; |
8505 | register dw_die_ref subrange_die; | |
8506 | ||
556273e0 | 8507 | /* The GNU compilers represent multidimensional array types as sequences of |
a3f97cbb JW |
8508 | one dimensional array types whose element types are themselves array |
8509 | types. Here we squish that down, so that each multidimensional array | |
556273e0 | 8510 | type gets only one array_type DIE in the Dwarf debugging info. The draft |
a3f97cbb JW |
8511 | Dwarf specification say that we are allowed to do this kind of |
8512 | compression in C (because there is no difference between an array or | |
556273e0 | 8513 | arrays and a multidimensional array in C) but for other source languages |
a3f97cbb | 8514 | (e.g. Ada) we probably shouldn't do this. */ |
71dfc51f | 8515 | |
a3f97cbb JW |
8516 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
8517 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
8518 | We work around this by disabling this feature. See also | |
8519 | gen_array_type_die. */ | |
8520 | #ifndef MIPS_DEBUGGING_INFO | |
8521 | for (dimension_number = 0; | |
8522 | TREE_CODE (type) == ARRAY_TYPE; | |
8523 | type = TREE_TYPE (type), dimension_number++) | |
8524 | { | |
8525 | #endif | |
8526 | register tree domain = TYPE_DOMAIN (type); | |
8527 | ||
8528 | /* Arrays come in three flavors: Unspecified bounds, fixed bounds, | |
556273e0 | 8529 | and (in GNU C only) variable bounds. Handle all three forms |
a3f97cbb JW |
8530 | here. */ |
8531 | subrange_die = new_die (DW_TAG_subrange_type, type_die); | |
8532 | if (domain) | |
8533 | { | |
8534 | /* We have an array type with specified bounds. */ | |
8535 | lower = TYPE_MIN_VALUE (domain); | |
8536 | upper = TYPE_MAX_VALUE (domain); | |
8537 | ||
a9d38797 JM |
8538 | /* define the index type. */ |
8539 | if (TREE_TYPE (domain)) | |
ef76d03b JW |
8540 | { |
8541 | /* ??? This is probably an Ada unnamed subrange type. Ignore the | |
8542 | TREE_TYPE field. We can't emit debug info for this | |
8543 | because it is an unnamed integral type. */ | |
8544 | if (TREE_CODE (domain) == INTEGER_TYPE | |
8545 | && TYPE_NAME (domain) == NULL_TREE | |
8546 | && TREE_CODE (TREE_TYPE (domain)) == INTEGER_TYPE | |
8547 | && TYPE_NAME (TREE_TYPE (domain)) == NULL_TREE) | |
556273e0 | 8548 | ; |
ef76d03b JW |
8549 | else |
8550 | add_type_attribute (subrange_die, TREE_TYPE (domain), 0, 0, | |
8551 | type_die); | |
8552 | } | |
a9d38797 | 8553 | |
e1ee5cdc RH |
8554 | /* ??? If upper is NULL, the array has unspecified length, |
8555 | but it does have a lower bound. This happens with Fortran | |
8556 | dimension arr(N:*) | |
8557 | Since the debugger is definitely going to need to know N | |
8558 | to produce useful results, go ahead and output the lower | |
8559 | bound solo, and hope the debugger can cope. */ | |
8560 | ||
141719a8 | 8561 | add_bound_info (subrange_die, DW_AT_lower_bound, lower); |
e1ee5cdc RH |
8562 | if (upper) |
8563 | add_bound_info (subrange_die, DW_AT_upper_bound, upper); | |
a3f97cbb JW |
8564 | } |
8565 | else | |
71dfc51f | 8566 | /* We have an array type with an unspecified length. The DWARF-2 |
a9d38797 JM |
8567 | spec does not say how to handle this; let's just leave out the |
8568 | bounds. */ | |
e49a1d2e | 8569 | {;} |
71dfc51f | 8570 | |
a3f97cbb JW |
8571 | #ifndef MIPS_DEBUGGING_INFO |
8572 | } | |
8573 | #endif | |
8574 | } | |
8575 | ||
8576 | static void | |
8577 | add_byte_size_attribute (die, tree_node) | |
8578 | dw_die_ref die; | |
8579 | register tree tree_node; | |
8580 | { | |
8581 | register unsigned size; | |
8582 | ||
8583 | switch (TREE_CODE (tree_node)) | |
8584 | { | |
8585 | case ERROR_MARK: | |
8586 | size = 0; | |
8587 | break; | |
8588 | case ENUMERAL_TYPE: | |
8589 | case RECORD_TYPE: | |
8590 | case UNION_TYPE: | |
8591 | case QUAL_UNION_TYPE: | |
8592 | size = int_size_in_bytes (tree_node); | |
8593 | break; | |
8594 | case FIELD_DECL: | |
8595 | /* For a data member of a struct or union, the DW_AT_byte_size is | |
8596 | generally given as the number of bytes normally allocated for an | |
8597 | object of the *declared* type of the member itself. This is true | |
8598 | even for bit-fields. */ | |
8599 | size = simple_type_size_in_bits (field_type (tree_node)) / BITS_PER_UNIT; | |
8600 | break; | |
8601 | default: | |
8602 | abort (); | |
8603 | } | |
8604 | ||
8605 | /* Note that `size' might be -1 when we get to this point. If it is, that | |
8606 | indicates that the byte size of the entity in question is variable. We | |
8607 | have no good way of expressing this fact in Dwarf at the present time, | |
8608 | so just let the -1 pass on through. */ | |
8609 | ||
8610 | add_AT_unsigned (die, DW_AT_byte_size, size); | |
8611 | } | |
8612 | ||
8613 | /* For a FIELD_DECL node which represents a bit-field, output an attribute | |
8614 | which specifies the distance in bits from the highest order bit of the | |
8615 | "containing object" for the bit-field to the highest order bit of the | |
8616 | bit-field itself. | |
8617 | ||
b2932ae5 JM |
8618 | For any given bit-field, the "containing object" is a hypothetical |
8619 | object (of some integral or enum type) within which the given bit-field | |
8620 | lives. The type of this hypothetical "containing object" is always the | |
8621 | same as the declared type of the individual bit-field itself. The | |
8622 | determination of the exact location of the "containing object" for a | |
8623 | bit-field is rather complicated. It's handled by the | |
8624 | `field_byte_offset' function (above). | |
a3f97cbb JW |
8625 | |
8626 | Note that it is the size (in bytes) of the hypothetical "containing object" | |
8627 | which will be given in the DW_AT_byte_size attribute for this bit-field. | |
8628 | (See `byte_size_attribute' above). */ | |
71dfc51f RK |
8629 | |
8630 | static inline void | |
a3f97cbb JW |
8631 | add_bit_offset_attribute (die, decl) |
8632 | register dw_die_ref die; | |
8633 | register tree decl; | |
8634 | { | |
665f2503 RK |
8635 | HOST_WIDE_INT object_offset_in_bytes = field_byte_offset (decl); |
8636 | tree type = DECL_BIT_FIELD_TYPE (decl); | |
8637 | HOST_WIDE_INT bitpos_int; | |
8638 | HOST_WIDE_INT highest_order_object_bit_offset; | |
8639 | HOST_WIDE_INT highest_order_field_bit_offset; | |
8640 | HOST_WIDE_INT unsigned bit_offset; | |
a3f97cbb | 8641 | |
3a88cbd1 JL |
8642 | /* Must be a field and a bit field. */ |
8643 | if (!type | |
8644 | || TREE_CODE (decl) != FIELD_DECL) | |
8645 | abort (); | |
a3f97cbb JW |
8646 | |
8647 | /* We can't yet handle bit-fields whose offsets are variable, so if we | |
8648 | encounter such things, just return without generating any attribute | |
665f2503 RK |
8649 | whatsoever. Likewise for variable or too large size. */ |
8650 | if (! host_integerp (bit_position (decl), 0) | |
8651 | || ! host_integerp (DECL_SIZE (decl), 1)) | |
71dfc51f RK |
8652 | return; |
8653 | ||
665f2503 | 8654 | bitpos_int = int_bit_position (decl); |
a3f97cbb JW |
8655 | |
8656 | /* Note that the bit offset is always the distance (in bits) from the | |
556273e0 KH |
8657 | highest-order bit of the "containing object" to the highest-order bit of |
8658 | the bit-field itself. Since the "high-order end" of any object or field | |
a3f97cbb JW |
8659 | is different on big-endian and little-endian machines, the computation |
8660 | below must take account of these differences. */ | |
8661 | highest_order_object_bit_offset = object_offset_in_bytes * BITS_PER_UNIT; | |
8662 | highest_order_field_bit_offset = bitpos_int; | |
8663 | ||
71dfc51f | 8664 | if (! BYTES_BIG_ENDIAN) |
a3f97cbb | 8665 | { |
665f2503 | 8666 | highest_order_field_bit_offset += tree_low_cst (DECL_SIZE (decl), 0); |
a3f97cbb JW |
8667 | highest_order_object_bit_offset += simple_type_size_in_bits (type); |
8668 | } | |
71dfc51f RK |
8669 | |
8670 | bit_offset | |
8671 | = (! BYTES_BIG_ENDIAN | |
8672 | ? highest_order_object_bit_offset - highest_order_field_bit_offset | |
8673 | : highest_order_field_bit_offset - highest_order_object_bit_offset); | |
a3f97cbb JW |
8674 | |
8675 | add_AT_unsigned (die, DW_AT_bit_offset, bit_offset); | |
8676 | } | |
8677 | ||
8678 | /* For a FIELD_DECL node which represents a bit field, output an attribute | |
8679 | which specifies the length in bits of the given field. */ | |
71dfc51f RK |
8680 | |
8681 | static inline void | |
a3f97cbb JW |
8682 | add_bit_size_attribute (die, decl) |
8683 | register dw_die_ref die; | |
8684 | register tree decl; | |
8685 | { | |
3a88cbd1 JL |
8686 | /* Must be a field and a bit field. */ |
8687 | if (TREE_CODE (decl) != FIELD_DECL | |
8688 | || ! DECL_BIT_FIELD_TYPE (decl)) | |
8689 | abort (); | |
665f2503 RK |
8690 | |
8691 | if (host_integerp (DECL_SIZE (decl), 1)) | |
8692 | add_AT_unsigned (die, DW_AT_bit_size, tree_low_cst (DECL_SIZE (decl), 1)); | |
a3f97cbb JW |
8693 | } |
8694 | ||
88dad228 | 8695 | /* If the compiled language is ANSI C, then add a 'prototyped' |
a3f97cbb | 8696 | attribute, if arg types are given for the parameters of a function. */ |
71dfc51f RK |
8697 | |
8698 | static inline void | |
a3f97cbb JW |
8699 | add_prototyped_attribute (die, func_type) |
8700 | register dw_die_ref die; | |
8701 | register tree func_type; | |
8702 | { | |
88dad228 JM |
8703 | if (get_AT_unsigned (comp_unit_die, DW_AT_language) == DW_LANG_C89 |
8704 | && TYPE_ARG_TYPES (func_type) != NULL) | |
8705 | add_AT_flag (die, DW_AT_prototyped, 1); | |
a3f97cbb JW |
8706 | } |
8707 | ||
a3f97cbb JW |
8708 | /* Add an 'abstract_origin' attribute below a given DIE. The DIE is found |
8709 | by looking in either the type declaration or object declaration | |
8710 | equate table. */ | |
71dfc51f RK |
8711 | |
8712 | static inline void | |
a3f97cbb JW |
8713 | add_abstract_origin_attribute (die, origin) |
8714 | register dw_die_ref die; | |
8715 | register tree origin; | |
8716 | { | |
8717 | dw_die_ref origin_die = NULL; | |
bbc6ae08 | 8718 | |
d10b8e05 | 8719 | if (TREE_CODE (origin) != FUNCTION_DECL) |
e40a1c67 JM |
8720 | { |
8721 | /* We may have gotten separated from the block for the inlined | |
8722 | function, if we're in an exception handler or some such; make | |
8723 | sure that the abstract function has been written out. | |
8724 | ||
8725 | Doing this for nested functions is wrong, however; functions are | |
8726 | distinct units, and our context might not even be inline. */ | |
fb13d4d0 JM |
8727 | tree fn = origin; |
8728 | if (TYPE_P (fn)) | |
8729 | fn = TYPE_STUB_DECL (fn); | |
8730 | fn = decl_function_context (fn); | |
e40a1c67 JM |
8731 | if (fn) |
8732 | gen_abstract_function (fn); | |
8733 | } | |
44db1d9c | 8734 | |
2f939d94 | 8735 | if (DECL_P (origin)) |
71dfc51f | 8736 | origin_die = lookup_decl_die (origin); |
2f939d94 | 8737 | else if (TYPE_P (origin)) |
71dfc51f RK |
8738 | origin_die = lookup_type_die (origin); |
8739 | ||
bbc6ae08 | 8740 | if (origin_die == NULL) |
1ae8994f | 8741 | abort (); |
556273e0 | 8742 | |
a3f97cbb JW |
8743 | add_AT_die_ref (die, DW_AT_abstract_origin, origin_die); |
8744 | } | |
8745 | ||
bdb669cb JM |
8746 | /* We do not currently support the pure_virtual attribute. */ |
8747 | ||
71dfc51f | 8748 | static inline void |
a3f97cbb JW |
8749 | add_pure_or_virtual_attribute (die, func_decl) |
8750 | register dw_die_ref die; | |
8751 | register tree func_decl; | |
8752 | { | |
a94dbf2c | 8753 | if (DECL_VINDEX (func_decl)) |
a3f97cbb | 8754 | { |
bdb669cb | 8755 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); |
665f2503 RK |
8756 | |
8757 | if (host_integerp (DECL_VINDEX (func_decl), 0)) | |
8758 | add_AT_loc (die, DW_AT_vtable_elem_location, | |
8759 | new_loc_descr (DW_OP_constu, | |
8760 | tree_low_cst (DECL_VINDEX (func_decl), 0), | |
8761 | 0)); | |
71dfc51f | 8762 | |
a94dbf2c JM |
8763 | /* GNU extension: Record what type this method came from originally. */ |
8764 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
8765 | add_AT_die_ref (die, DW_AT_containing_type, | |
8766 | lookup_type_die (DECL_CONTEXT (func_decl))); | |
a3f97cbb JW |
8767 | } |
8768 | } | |
8769 | \f | |
b2932ae5 | 8770 | /* Add source coordinate attributes for the given decl. */ |
71dfc51f | 8771 | |
b2932ae5 JM |
8772 | static void |
8773 | add_src_coords_attributes (die, decl) | |
8774 | register dw_die_ref die; | |
8775 | register tree decl; | |
8776 | { | |
8777 | register unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 8778 | |
b2932ae5 JM |
8779 | add_AT_unsigned (die, DW_AT_decl_file, file_index); |
8780 | add_AT_unsigned (die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
8781 | } | |
8782 | ||
a3f97cbb JW |
8783 | /* Add an DW_AT_name attribute and source coordinate attribute for the |
8784 | given decl, but only if it actually has a name. */ | |
71dfc51f | 8785 | |
a3f97cbb JW |
8786 | static void |
8787 | add_name_and_src_coords_attributes (die, decl) | |
8788 | register dw_die_ref die; | |
8789 | register tree decl; | |
8790 | { | |
61b32c02 | 8791 | register tree decl_name; |
71dfc51f | 8792 | |
556273e0 | 8793 | decl_name = DECL_NAME (decl); |
71dfc51f | 8794 | if (decl_name != NULL && IDENTIFIER_POINTER (decl_name) != NULL) |
a3f97cbb | 8795 | { |
a1d7ffe3 | 8796 | add_name_attribute (die, dwarf2_name (decl, 0)); |
a96c67ec JM |
8797 | if (! DECL_ARTIFICIAL (decl)) |
8798 | add_src_coords_attributes (die, decl); | |
e689ae67 | 8799 | |
a1d7ffe3 | 8800 | if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL) |
bc808e0b | 8801 | && TREE_PUBLIC (decl) |
a1d7ffe3 JM |
8802 | && DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl)) |
8803 | add_AT_string (die, DW_AT_MIPS_linkage_name, | |
8804 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
a3f97cbb JW |
8805 | } |
8806 | } | |
8807 | ||
556273e0 | 8808 | /* Push a new declaration scope. */ |
71dfc51f | 8809 | |
a3f97cbb JW |
8810 | static void |
8811 | push_decl_scope (scope) | |
8812 | tree scope; | |
8813 | { | |
8814 | /* Make room in the decl_scope_table, if necessary. */ | |
8815 | if (decl_scope_table_allocated == decl_scope_depth) | |
8816 | { | |
8817 | decl_scope_table_allocated += DECL_SCOPE_TABLE_INCREMENT; | |
71dfc51f | 8818 | decl_scope_table |
777ad4c2 JM |
8819 | = (tree *) xrealloc (decl_scope_table, |
8820 | decl_scope_table_allocated * sizeof (tree)); | |
a3f97cbb | 8821 | } |
71dfc51f | 8822 | |
777ad4c2 | 8823 | decl_scope_table[decl_scope_depth] = scope; |
e3e7774e | 8824 | decl_scope_depth++; |
a3f97cbb JW |
8825 | } |
8826 | ||
777ad4c2 JM |
8827 | /* Pop a declaration scope. */ |
8828 | static inline void | |
8829 | pop_decl_scope () | |
8830 | { | |
8831 | if (decl_scope_depth <= 0) | |
8832 | abort (); | |
8833 | --decl_scope_depth; | |
8834 | } | |
8835 | ||
8836 | /* Return the DIE for the scope that immediately contains this type. | |
8837 | Non-named types get global scope. Named types nested in other | |
8838 | types get their containing scope if it's open, or global scope | |
8839 | otherwise. All other types (i.e. function-local named types) get | |
8840 | the current active scope. */ | |
71dfc51f | 8841 | |
a3f97cbb | 8842 | static dw_die_ref |
ab72d377 | 8843 | scope_die_for (t, context_die) |
556273e0 KH |
8844 | register tree t; |
8845 | register dw_die_ref context_die; | |
a3f97cbb JW |
8846 | { |
8847 | register dw_die_ref scope_die = NULL; | |
8848 | register tree containing_scope; | |
e3e7774e | 8849 | register int i; |
a3f97cbb | 8850 | |
777ad4c2 JM |
8851 | /* Non-types always go in the current scope. */ |
8852 | if (! TYPE_P (t)) | |
8853 | abort (); | |
8854 | ||
8855 | containing_scope = TYPE_CONTEXT (t); | |
ab72d377 | 8856 | |
2addbe1d JM |
8857 | /* Ignore namespaces for the moment. */ |
8858 | if (containing_scope && TREE_CODE (containing_scope) == NAMESPACE_DECL) | |
8859 | containing_scope = NULL_TREE; | |
8860 | ||
5f2f160c JM |
8861 | /* Ignore function type "scopes" from the C frontend. They mean that |
8862 | a tagged type is local to a parmlist of a function declarator, but | |
8863 | that isn't useful to DWARF. */ | |
8864 | if (containing_scope && TREE_CODE (containing_scope) == FUNCTION_TYPE) | |
8865 | containing_scope = NULL_TREE; | |
8866 | ||
71dfc51f RK |
8867 | if (containing_scope == NULL_TREE) |
8868 | scope_die = comp_unit_die; | |
777ad4c2 | 8869 | else if (TYPE_P (containing_scope)) |
348bb3c7 | 8870 | { |
777ad4c2 JM |
8871 | /* For types, we can just look up the appropriate DIE. But |
8872 | first we check to see if we're in the middle of emitting it | |
8873 | so we know where the new DIE should go. */ | |
348bb3c7 JM |
8874 | |
8875 | for (i = decl_scope_depth - 1; i >= 0; --i) | |
777ad4c2 | 8876 | if (decl_scope_table[i] == containing_scope) |
348bb3c7 JM |
8877 | break; |
8878 | ||
8879 | if (i < 0) | |
8880 | { | |
348bb3c7 JM |
8881 | if (debug_info_level > DINFO_LEVEL_TERSE |
8882 | && !TREE_ASM_WRITTEN (containing_scope)) | |
8883 | abort (); | |
8884 | ||
8885 | /* If none of the current dies are suitable, we get file scope. */ | |
8886 | scope_die = comp_unit_die; | |
8887 | } | |
8888 | else | |
777ad4c2 | 8889 | scope_die = lookup_type_die (containing_scope); |
348bb3c7 | 8890 | } |
a3f97cbb | 8891 | else |
777ad4c2 | 8892 | scope_die = context_die; |
71dfc51f | 8893 | |
a3f97cbb JW |
8894 | return scope_die; |
8895 | } | |
8896 | ||
777ad4c2 JM |
8897 | /* Returns nonzero iff CONTEXT_DIE is internal to a function. */ |
8898 | ||
c6991660 | 8899 | static inline int local_scope_p PARAMS ((dw_die_ref)); |
777ad4c2 JM |
8900 | static inline int |
8901 | local_scope_p (context_die) | |
8902 | dw_die_ref context_die; | |
a3f97cbb | 8903 | { |
777ad4c2 JM |
8904 | for (; context_die; context_die = context_die->die_parent) |
8905 | if (context_die->die_tag == DW_TAG_inlined_subroutine | |
8906 | || context_die->die_tag == DW_TAG_subprogram) | |
8907 | return 1; | |
8908 | return 0; | |
a3f97cbb JW |
8909 | } |
8910 | ||
9765e357 JM |
8911 | /* Returns nonzero iff CONTEXT_DIE is a class. */ |
8912 | ||
c6991660 | 8913 | static inline int class_scope_p PARAMS ((dw_die_ref)); |
9765e357 JM |
8914 | static inline int |
8915 | class_scope_p (context_die) | |
8916 | dw_die_ref context_die; | |
8917 | { | |
8918 | return (context_die | |
8919 | && (context_die->die_tag == DW_TAG_structure_type | |
8920 | || context_die->die_tag == DW_TAG_union_type)); | |
8921 | } | |
8922 | ||
a3f97cbb JW |
8923 | /* Many forms of DIEs require a "type description" attribute. This |
8924 | routine locates the proper "type descriptor" die for the type given | |
8925 | by 'type', and adds an DW_AT_type attribute below the given die. */ | |
71dfc51f | 8926 | |
a3f97cbb JW |
8927 | static void |
8928 | add_type_attribute (object_die, type, decl_const, decl_volatile, context_die) | |
8929 | register dw_die_ref object_die; | |
8930 | register tree type; | |
8931 | register int decl_const; | |
8932 | register int decl_volatile; | |
8933 | register dw_die_ref context_die; | |
8934 | { | |
8935 | register enum tree_code code = TREE_CODE (type); | |
a3f97cbb JW |
8936 | register dw_die_ref type_die = NULL; |
8937 | ||
ef76d03b JW |
8938 | /* ??? If this type is an unnamed subrange type of an integral or |
8939 | floating-point type, use the inner type. This is because we have no | |
8940 | support for unnamed types in base_type_die. This can happen if this is | |
8941 | an Ada subrange type. Correct solution is emit a subrange type die. */ | |
b1ccbc24 RK |
8942 | if ((code == INTEGER_TYPE || code == REAL_TYPE) |
8943 | && TREE_TYPE (type) != 0 && TYPE_NAME (type) == 0) | |
8944 | type = TREE_TYPE (type), code = TREE_CODE (type); | |
8945 | ||
a3f97cbb | 8946 | if (code == ERROR_MARK) |
b1ccbc24 | 8947 | return; |
a3f97cbb JW |
8948 | |
8949 | /* Handle a special case. For functions whose return type is void, we | |
8950 | generate *no* type attribute. (Note that no object may have type | |
8951 | `void', so this only applies to function return types). */ | |
8952 | if (code == VOID_TYPE) | |
b1ccbc24 | 8953 | return; |
a3f97cbb | 8954 | |
a3f97cbb JW |
8955 | type_die = modified_type_die (type, |
8956 | decl_const || TYPE_READONLY (type), | |
8957 | decl_volatile || TYPE_VOLATILE (type), | |
ab72d377 | 8958 | context_die); |
a3f97cbb | 8959 | if (type_die != NULL) |
71dfc51f | 8960 | add_AT_die_ref (object_die, DW_AT_type, type_die); |
a3f97cbb JW |
8961 | } |
8962 | ||
8963 | /* Given a tree pointer to a struct, class, union, or enum type node, return | |
8964 | a pointer to the (string) tag name for the given type, or zero if the type | |
8965 | was declared without a tag. */ | |
71dfc51f | 8966 | |
d3e3972c | 8967 | static const char * |
a3f97cbb JW |
8968 | type_tag (type) |
8969 | register tree type; | |
8970 | { | |
d3e3972c | 8971 | register const char *name = 0; |
a3f97cbb JW |
8972 | |
8973 | if (TYPE_NAME (type) != 0) | |
8974 | { | |
8975 | register tree t = 0; | |
8976 | ||
8977 | /* Find the IDENTIFIER_NODE for the type name. */ | |
8978 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
8979 | t = TYPE_NAME (type); | |
bdb669cb | 8980 | |
556273e0 | 8981 | /* The g++ front end makes the TYPE_NAME of *each* tagged type point to |
a3f97cbb | 8982 | a TYPE_DECL node, regardless of whether or not a `typedef' was |
bdb669cb | 8983 | involved. */ |
a94dbf2c JM |
8984 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
8985 | && ! DECL_IGNORED_P (TYPE_NAME (type))) | |
a3f97cbb | 8986 | t = DECL_NAME (TYPE_NAME (type)); |
bdb669cb | 8987 | |
a3f97cbb JW |
8988 | /* Now get the name as a string, or invent one. */ |
8989 | if (t != 0) | |
a94dbf2c | 8990 | name = IDENTIFIER_POINTER (t); |
a3f97cbb | 8991 | } |
71dfc51f | 8992 | |
a3f97cbb JW |
8993 | return (name == 0 || *name == '\0') ? 0 : name; |
8994 | } | |
8995 | ||
8996 | /* Return the type associated with a data member, make a special check | |
8997 | for bit field types. */ | |
71dfc51f RK |
8998 | |
8999 | static inline tree | |
a3f97cbb JW |
9000 | member_declared_type (member) |
9001 | register tree member; | |
9002 | { | |
71dfc51f RK |
9003 | return (DECL_BIT_FIELD_TYPE (member) |
9004 | ? DECL_BIT_FIELD_TYPE (member) | |
9005 | : TREE_TYPE (member)); | |
a3f97cbb JW |
9006 | } |
9007 | ||
d291dd49 | 9008 | /* Get the decl's label, as described by its RTL. This may be different |
a3f97cbb | 9009 | from the DECL_NAME name used in the source file. */ |
71dfc51f | 9010 | |
487a6e06 | 9011 | #if 0 |
d3e3972c | 9012 | static const char * |
d291dd49 | 9013 | decl_start_label (decl) |
a3f97cbb JW |
9014 | register tree decl; |
9015 | { | |
9016 | rtx x; | |
d3e3972c | 9017 | const char *fnname; |
a3f97cbb JW |
9018 | x = DECL_RTL (decl); |
9019 | if (GET_CODE (x) != MEM) | |
71dfc51f RK |
9020 | abort (); |
9021 | ||
a3f97cbb JW |
9022 | x = XEXP (x, 0); |
9023 | if (GET_CODE (x) != SYMBOL_REF) | |
71dfc51f RK |
9024 | abort (); |
9025 | ||
a3f97cbb JW |
9026 | fnname = XSTR (x, 0); |
9027 | return fnname; | |
9028 | } | |
487a6e06 | 9029 | #endif |
a3f97cbb | 9030 | \f |
956d6950 | 9031 | /* These routines generate the internal representation of the DIE's for |
a3f97cbb | 9032 | the compilation unit. Debugging information is collected by walking |
88dad228 | 9033 | the declaration trees passed in from dwarf2out_decl(). */ |
a3f97cbb JW |
9034 | |
9035 | static void | |
9036 | gen_array_type_die (type, context_die) | |
9037 | register tree type; | |
9038 | register dw_die_ref context_die; | |
9039 | { | |
ab72d377 | 9040 | register dw_die_ref scope_die = scope_die_for (type, context_die); |
a9d38797 | 9041 | register dw_die_ref array_die; |
a3f97cbb | 9042 | register tree element_type; |
bdb669cb | 9043 | |
a9d38797 JM |
9044 | /* ??? The SGI dwarf reader fails for array of array of enum types unless |
9045 | the inner array type comes before the outer array type. Thus we must | |
9046 | call gen_type_die before we call new_die. See below also. */ | |
9047 | #ifdef MIPS_DEBUGGING_INFO | |
9048 | gen_type_die (TREE_TYPE (type), context_die); | |
9049 | #endif | |
9050 | ||
9051 | array_die = new_die (DW_TAG_array_type, scope_die); | |
9052 | ||
a3f97cbb JW |
9053 | #if 0 |
9054 | /* We default the array ordering. SDB will probably do | |
9055 | the right things even if DW_AT_ordering is not present. It's not even | |
9056 | an issue until we start to get into multidimensional arrays anyway. If | |
9057 | SDB is ever caught doing the Wrong Thing for multi-dimensional arrays, | |
9058 | then we'll have to put the DW_AT_ordering attribute back in. (But if | |
9059 | and when we find out that we need to put these in, we will only do so | |
9060 | for multidimensional arrays. */ | |
9061 | add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_row_major); | |
9062 | #endif | |
9063 | ||
a9d38797 | 9064 | #ifdef MIPS_DEBUGGING_INFO |
4edb7b60 JM |
9065 | /* The SGI compilers handle arrays of unknown bound by setting |
9066 | AT_declaration and not emitting any subrange DIEs. */ | |
a9d38797 JM |
9067 | if (! TYPE_DOMAIN (type)) |
9068 | add_AT_unsigned (array_die, DW_AT_declaration, 1); | |
9069 | else | |
9070 | #endif | |
9071 | add_subscript_info (array_die, type); | |
a3f97cbb | 9072 | |
14a774a9 | 9073 | add_name_attribute (array_die, type_tag (type)); |
a3f97cbb JW |
9074 | equate_type_number_to_die (type, array_die); |
9075 | ||
9076 | /* Add representation of the type of the elements of this array type. */ | |
9077 | element_type = TREE_TYPE (type); | |
71dfc51f | 9078 | |
a3f97cbb JW |
9079 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
9080 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
9081 | We work around this by disabling this feature. See also | |
9082 | add_subscript_info. */ | |
9083 | #ifndef MIPS_DEBUGGING_INFO | |
71dfc51f RK |
9084 | while (TREE_CODE (element_type) == ARRAY_TYPE) |
9085 | element_type = TREE_TYPE (element_type); | |
9086 | ||
a3f97cbb | 9087 | gen_type_die (element_type, context_die); |
a9d38797 | 9088 | #endif |
a3f97cbb JW |
9089 | |
9090 | add_type_attribute (array_die, element_type, 0, 0, context_die); | |
9091 | } | |
9092 | ||
9093 | static void | |
9094 | gen_set_type_die (type, context_die) | |
9095 | register tree type; | |
9096 | register dw_die_ref context_die; | |
9097 | { | |
71dfc51f RK |
9098 | register dw_die_ref type_die |
9099 | = new_die (DW_TAG_set_type, scope_die_for (type, context_die)); | |
9100 | ||
a3f97cbb | 9101 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
9102 | add_type_attribute (type_die, TREE_TYPE (type), 0, 0, context_die); |
9103 | } | |
9104 | ||
d6f4ec51 | 9105 | #if 0 |
a3f97cbb JW |
9106 | static void |
9107 | gen_entry_point_die (decl, context_die) | |
9108 | register tree decl; | |
9109 | register dw_die_ref context_die; | |
9110 | { | |
9111 | register tree origin = decl_ultimate_origin (decl); | |
9112 | register dw_die_ref decl_die = new_die (DW_TAG_entry_point, context_die); | |
9113 | if (origin != NULL) | |
71dfc51f | 9114 | add_abstract_origin_attribute (decl_die, origin); |
a3f97cbb JW |
9115 | else |
9116 | { | |
9117 | add_name_and_src_coords_attributes (decl_die, decl); | |
a3f97cbb JW |
9118 | add_type_attribute (decl_die, TREE_TYPE (TREE_TYPE (decl)), |
9119 | 0, 0, context_die); | |
9120 | } | |
71dfc51f | 9121 | |
a3f97cbb | 9122 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 9123 | equate_decl_number_to_die (decl, decl_die); |
a3f97cbb | 9124 | else |
71dfc51f | 9125 | add_AT_lbl_id (decl_die, DW_AT_low_pc, decl_start_label (decl)); |
a3f97cbb | 9126 | } |
d6f4ec51 | 9127 | #endif |
a3f97cbb | 9128 | |
8a8c3656 JM |
9129 | /* Remember a type in the incomplete_types_list. */ |
9130 | ||
9131 | static void | |
9132 | add_incomplete_type (type) | |
9133 | tree type; | |
9134 | { | |
9135 | if (incomplete_types == incomplete_types_allocated) | |
9136 | { | |
9137 | incomplete_types_allocated += INCOMPLETE_TYPES_INCREMENT; | |
9138 | incomplete_types_list | |
9139 | = (tree *) xrealloc (incomplete_types_list, | |
9140 | sizeof (tree) * incomplete_types_allocated); | |
9141 | } | |
9142 | ||
9143 | incomplete_types_list[incomplete_types++] = type; | |
9144 | } | |
9145 | ||
9146 | /* Walk through the list of incomplete types again, trying once more to | |
9147 | emit full debugging info for them. */ | |
9148 | ||
9149 | static void | |
9150 | retry_incomplete_types () | |
9151 | { | |
9152 | register tree type; | |
9153 | ||
9154 | while (incomplete_types) | |
9155 | { | |
9156 | --incomplete_types; | |
9157 | type = incomplete_types_list[incomplete_types]; | |
9158 | gen_type_die (type, comp_unit_die); | |
9159 | } | |
9160 | } | |
9161 | ||
a3f97cbb | 9162 | /* Generate a DIE to represent an inlined instance of an enumeration type. */ |
71dfc51f | 9163 | |
a3f97cbb JW |
9164 | static void |
9165 | gen_inlined_enumeration_type_die (type, context_die) | |
9166 | register tree type; | |
9167 | register dw_die_ref context_die; | |
9168 | { | |
71dfc51f | 9169 | register dw_die_ref type_die = new_die (DW_TAG_enumeration_type, |
777ad4c2 | 9170 | context_die); |
bbc6ae08 NC |
9171 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
9172 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
9173 | add_abstract_origin_attribute (type_die, type); |
9174 | } | |
9175 | ||
9176 | /* Generate a DIE to represent an inlined instance of a structure type. */ | |
71dfc51f | 9177 | |
a3f97cbb JW |
9178 | static void |
9179 | gen_inlined_structure_type_die (type, context_die) | |
9180 | register tree type; | |
9181 | register dw_die_ref context_die; | |
9182 | { | |
777ad4c2 JM |
9183 | register dw_die_ref type_die = new_die (DW_TAG_structure_type, context_die); |
9184 | ||
bbc6ae08 NC |
9185 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
9186 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
9187 | add_abstract_origin_attribute (type_die, type); |
9188 | } | |
9189 | ||
9190 | /* Generate a DIE to represent an inlined instance of a union type. */ | |
71dfc51f | 9191 | |
a3f97cbb JW |
9192 | static void |
9193 | gen_inlined_union_type_die (type, context_die) | |
9194 | register tree type; | |
9195 | register dw_die_ref context_die; | |
9196 | { | |
777ad4c2 JM |
9197 | register dw_die_ref type_die = new_die (DW_TAG_union_type, context_die); |
9198 | ||
bbc6ae08 NC |
9199 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
9200 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
9201 | add_abstract_origin_attribute (type_die, type); |
9202 | } | |
9203 | ||
9204 | /* Generate a DIE to represent an enumeration type. Note that these DIEs | |
9205 | include all of the information about the enumeration values also. Each | |
273dbe67 JM |
9206 | enumerated type name/value is listed as a child of the enumerated type |
9207 | DIE. */ | |
71dfc51f | 9208 | |
a3f97cbb | 9209 | static void |
273dbe67 | 9210 | gen_enumeration_type_die (type, context_die) |
a3f97cbb | 9211 | register tree type; |
a3f97cbb JW |
9212 | register dw_die_ref context_die; |
9213 | { | |
273dbe67 JM |
9214 | register dw_die_ref type_die = lookup_type_die (type); |
9215 | ||
a3f97cbb JW |
9216 | if (type_die == NULL) |
9217 | { | |
9218 | type_die = new_die (DW_TAG_enumeration_type, | |
ab72d377 | 9219 | scope_die_for (type, context_die)); |
a3f97cbb JW |
9220 | equate_type_number_to_die (type, type_die); |
9221 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 9222 | } |
273dbe67 JM |
9223 | else if (! TYPE_SIZE (type)) |
9224 | return; | |
9225 | else | |
9226 | remove_AT (type_die, DW_AT_declaration); | |
9227 | ||
9228 | /* Handle a GNU C/C++ extension, i.e. incomplete enum types. If the | |
9229 | given enum type is incomplete, do not generate the DW_AT_byte_size | |
9230 | attribute or the DW_AT_element_list attribute. */ | |
9231 | if (TYPE_SIZE (type)) | |
a3f97cbb | 9232 | { |
273dbe67 | 9233 | register tree link; |
71dfc51f | 9234 | |
a082c85a | 9235 | TREE_ASM_WRITTEN (type) = 1; |
273dbe67 | 9236 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 9237 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 9238 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 9239 | |
ef76d03b JW |
9240 | /* If the first reference to this type was as the return type of an |
9241 | inline function, then it may not have a parent. Fix this now. */ | |
9242 | if (type_die->die_parent == NULL) | |
9243 | add_child_die (scope_die_for (type, context_die), type_die); | |
9244 | ||
273dbe67 JM |
9245 | for (link = TYPE_FIELDS (type); |
9246 | link != NULL; link = TREE_CHAIN (link)) | |
a3f97cbb | 9247 | { |
273dbe67 | 9248 | register dw_die_ref enum_die = new_die (DW_TAG_enumerator, type_die); |
71dfc51f | 9249 | |
273dbe67 JM |
9250 | add_name_attribute (enum_die, |
9251 | IDENTIFIER_POINTER (TREE_PURPOSE (link))); | |
665f2503 RK |
9252 | |
9253 | if (host_integerp (TREE_VALUE (link), 0)) | |
fc9e8a14 JJ |
9254 | { |
9255 | if (tree_int_cst_sgn (TREE_VALUE (link)) < 0) | |
9256 | add_AT_int (enum_die, DW_AT_const_value, | |
9257 | tree_low_cst (TREE_VALUE (link), 0)); | |
9258 | else | |
9259 | add_AT_unsigned (enum_die, DW_AT_const_value, | |
9260 | tree_low_cst (TREE_VALUE (link), 0)); | |
9261 | } | |
a3f97cbb JW |
9262 | } |
9263 | } | |
273dbe67 JM |
9264 | else |
9265 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
9266 | } |
9267 | ||
a3f97cbb JW |
9268 | /* Generate a DIE to represent either a real live formal parameter decl or to |
9269 | represent just the type of some formal parameter position in some function | |
9270 | type. | |
71dfc51f | 9271 | |
a3f97cbb JW |
9272 | Note that this routine is a bit unusual because its argument may be a |
9273 | ..._DECL node (i.e. either a PARM_DECL or perhaps a VAR_DECL which | |
9274 | represents an inlining of some PARM_DECL) or else some sort of a ..._TYPE | |
9275 | node. If it's the former then this function is being called to output a | |
9276 | DIE to represent a formal parameter object (or some inlining thereof). If | |
9277 | it's the latter, then this function is only being called to output a | |
9278 | DW_TAG_formal_parameter DIE to stand as a placeholder for some formal | |
9279 | argument type of some subprogram type. */ | |
71dfc51f | 9280 | |
a94dbf2c | 9281 | static dw_die_ref |
a3f97cbb JW |
9282 | gen_formal_parameter_die (node, context_die) |
9283 | register tree node; | |
9284 | register dw_die_ref context_die; | |
9285 | { | |
71dfc51f RK |
9286 | register dw_die_ref parm_die |
9287 | = new_die (DW_TAG_formal_parameter, context_die); | |
a3f97cbb | 9288 | register tree origin; |
71dfc51f | 9289 | |
a3f97cbb JW |
9290 | switch (TREE_CODE_CLASS (TREE_CODE (node))) |
9291 | { | |
a3f97cbb JW |
9292 | case 'd': |
9293 | origin = decl_ultimate_origin (node); | |
9294 | if (origin != NULL) | |
a94dbf2c | 9295 | add_abstract_origin_attribute (parm_die, origin); |
a3f97cbb JW |
9296 | else |
9297 | { | |
9298 | add_name_and_src_coords_attributes (parm_die, node); | |
9299 | add_type_attribute (parm_die, TREE_TYPE (node), | |
9300 | TREE_READONLY (node), | |
9301 | TREE_THIS_VOLATILE (node), | |
9302 | context_die); | |
bdb669cb JM |
9303 | if (DECL_ARTIFICIAL (node)) |
9304 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb | 9305 | } |
71dfc51f | 9306 | |
141719a8 JM |
9307 | equate_decl_number_to_die (node, parm_die); |
9308 | if (! DECL_ABSTRACT (node)) | |
a94dbf2c | 9309 | add_location_or_const_value_attribute (parm_die, node); |
71dfc51f | 9310 | |
a3f97cbb JW |
9311 | break; |
9312 | ||
a3f97cbb | 9313 | case 't': |
71dfc51f | 9314 | /* We were called with some kind of a ..._TYPE node. */ |
a3f97cbb JW |
9315 | add_type_attribute (parm_die, node, 0, 0, context_die); |
9316 | break; | |
9317 | ||
a3f97cbb JW |
9318 | default: |
9319 | abort (); | |
9320 | } | |
71dfc51f | 9321 | |
a94dbf2c | 9322 | return parm_die; |
a3f97cbb JW |
9323 | } |
9324 | ||
9325 | /* Generate a special type of DIE used as a stand-in for a trailing ellipsis | |
9326 | at the end of an (ANSI prototyped) formal parameters list. */ | |
71dfc51f | 9327 | |
a3f97cbb JW |
9328 | static void |
9329 | gen_unspecified_parameters_die (decl_or_type, context_die) | |
2618f955 | 9330 | register tree decl_or_type ATTRIBUTE_UNUSED; |
a3f97cbb JW |
9331 | register dw_die_ref context_die; |
9332 | { | |
487a6e06 | 9333 | new_die (DW_TAG_unspecified_parameters, context_die); |
a3f97cbb JW |
9334 | } |
9335 | ||
9336 | /* Generate a list of nameless DW_TAG_formal_parameter DIEs (and perhaps a | |
9337 | DW_TAG_unspecified_parameters DIE) to represent the types of the formal | |
9338 | parameters as specified in some function type specification (except for | |
1cfdcc15 | 9339 | those which appear as part of a function *definition*). */ |
71dfc51f | 9340 | |
a3f97cbb JW |
9341 | static void |
9342 | gen_formal_types_die (function_or_method_type, context_die) | |
9343 | register tree function_or_method_type; | |
9344 | register dw_die_ref context_die; | |
9345 | { | |
9346 | register tree link; | |
9347 | register tree formal_type = NULL; | |
9348 | register tree first_parm_type = TYPE_ARG_TYPES (function_or_method_type); | |
9349 | ||
bdb669cb | 9350 | #if 0 |
a3f97cbb JW |
9351 | /* In the case where we are generating a formal types list for a C++ |
9352 | non-static member function type, skip over the first thing on the | |
9353 | TYPE_ARG_TYPES list because it only represents the type of the hidden | |
9354 | `this pointer'. The debugger should be able to figure out (without | |
556273e0 KH |
9355 | being explicitly told) that this non-static member function type takes a |
9356 | `this pointer' and should be able to figure what the type of that hidden | |
a3f97cbb JW |
9357 | parameter is from the DW_AT_member attribute of the parent |
9358 | DW_TAG_subroutine_type DIE. */ | |
9359 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE) | |
9360 | first_parm_type = TREE_CHAIN (first_parm_type); | |
bdb669cb | 9361 | #endif |
a3f97cbb | 9362 | |
556273e0 | 9363 | /* Make our first pass over the list of formal parameter types and output a |
a3f97cbb JW |
9364 | DW_TAG_formal_parameter DIE for each one. */ |
9365 | for (link = first_parm_type; link; link = TREE_CHAIN (link)) | |
9366 | { | |
a94dbf2c | 9367 | register dw_die_ref parm_die; |
556273e0 | 9368 | |
a3f97cbb JW |
9369 | formal_type = TREE_VALUE (link); |
9370 | if (formal_type == void_type_node) | |
9371 | break; | |
9372 | ||
9373 | /* Output a (nameless) DIE to represent the formal parameter itself. */ | |
a94dbf2c JM |
9374 | parm_die = gen_formal_parameter_die (formal_type, context_die); |
9375 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE | |
9376 | && link == first_parm_type) | |
9377 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb JW |
9378 | } |
9379 | ||
9380 | /* If this function type has an ellipsis, add a | |
9381 | DW_TAG_unspecified_parameters DIE to the end of the parameter list. */ | |
9382 | if (formal_type != void_type_node) | |
9383 | gen_unspecified_parameters_die (function_or_method_type, context_die); | |
9384 | ||
556273e0 | 9385 | /* Make our second (and final) pass over the list of formal parameter types |
a3f97cbb JW |
9386 | and output DIEs to represent those types (as necessary). */ |
9387 | for (link = TYPE_ARG_TYPES (function_or_method_type); | |
9388 | link; | |
9389 | link = TREE_CHAIN (link)) | |
9390 | { | |
9391 | formal_type = TREE_VALUE (link); | |
9392 | if (formal_type == void_type_node) | |
9393 | break; | |
9394 | ||
b50c02f9 | 9395 | gen_type_die (formal_type, context_die); |
a3f97cbb JW |
9396 | } |
9397 | } | |
9398 | ||
10a11b75 JM |
9399 | /* We want to generate the DIE for TYPE so that we can generate the |
9400 | die for MEMBER, which has been defined; we will need to refer back | |
9401 | to the member declaration nested within TYPE. If we're trying to | |
9402 | generate minimal debug info for TYPE, processing TYPE won't do the | |
9403 | trick; we need to attach the member declaration by hand. */ | |
9404 | ||
9405 | static void | |
9406 | gen_type_die_for_member (type, member, context_die) | |
9407 | tree type, member; | |
9408 | dw_die_ref context_die; | |
9409 | { | |
9410 | gen_type_die (type, context_die); | |
9411 | ||
9412 | /* If we're trying to avoid duplicate debug info, we may not have | |
9413 | emitted the member decl for this function. Emit it now. */ | |
9414 | if (TYPE_DECL_SUPPRESS_DEBUG (TYPE_STUB_DECL (type)) | |
9415 | && ! lookup_decl_die (member)) | |
9416 | { | |
9417 | if (decl_ultimate_origin (member)) | |
9418 | abort (); | |
9419 | ||
9420 | push_decl_scope (type); | |
9421 | if (TREE_CODE (member) == FUNCTION_DECL) | |
9422 | gen_subprogram_die (member, lookup_type_die (type)); | |
9423 | else | |
9424 | gen_variable_die (member, lookup_type_die (type)); | |
9425 | pop_decl_scope (); | |
9426 | } | |
9427 | } | |
9428 | ||
9429 | /* Generate the DWARF2 info for the "abstract" instance | |
9430 | of a function which we may later generate inlined and/or | |
9431 | out-of-line instances of. */ | |
9432 | ||
9433 | static void | |
9434 | gen_abstract_function (decl) | |
9435 | tree decl; | |
9436 | { | |
9437 | register dw_die_ref old_die = lookup_decl_die (decl); | |
777ad4c2 | 9438 | tree save_fn; |
10a11b75 JM |
9439 | |
9440 | if (old_die && get_AT_unsigned (old_die, DW_AT_inline)) | |
9441 | /* We've already generated the abstract instance. */ | |
9442 | return; | |
9443 | ||
777ad4c2 JM |
9444 | save_fn = current_function_decl; |
9445 | current_function_decl = decl; | |
9446 | ||
10a11b75 JM |
9447 | set_decl_abstract_flags (decl, 1); |
9448 | dwarf2out_decl (decl); | |
9449 | set_decl_abstract_flags (decl, 0); | |
777ad4c2 JM |
9450 | |
9451 | current_function_decl = save_fn; | |
10a11b75 JM |
9452 | } |
9453 | ||
a3f97cbb JW |
9454 | /* Generate a DIE to represent a declared function (either file-scope or |
9455 | block-local). */ | |
71dfc51f | 9456 | |
a3f97cbb JW |
9457 | static void |
9458 | gen_subprogram_die (decl, context_die) | |
9459 | register tree decl; | |
9460 | register dw_die_ref context_die; | |
9461 | { | |
9462 | char label_id[MAX_ARTIFICIAL_LABEL_BYTES]; | |
9463 | register tree origin = decl_ultimate_origin (decl); | |
4b674448 | 9464 | register dw_die_ref subr_die; |
b1ccbc24 | 9465 | register rtx fp_reg; |
a3f97cbb JW |
9466 | register tree fn_arg_types; |
9467 | register tree outer_scope; | |
a94dbf2c | 9468 | register dw_die_ref old_die = lookup_decl_die (decl); |
9765e357 JM |
9469 | register int declaration = (current_function_decl != decl |
9470 | || class_scope_p (context_die)); | |
a3f97cbb | 9471 | |
10a11b75 JM |
9472 | /* Note that it is possible to have both DECL_ABSTRACT and `declaration' |
9473 | be true, if we started to generate the abstract instance of an inline, | |
9474 | decided to output its containing class, and proceeded to emit the | |
9475 | declaration of the inline from the member list for the class. In that | |
9476 | case, `declaration' takes priority; we'll get back to the abstract | |
9477 | instance when we're done with the class. */ | |
9478 | ||
1cfdcc15 JM |
9479 | /* The class-scope declaration DIE must be the primary DIE. */ |
9480 | if (origin && declaration && class_scope_p (context_die)) | |
9481 | { | |
9482 | origin = NULL; | |
9483 | if (old_die) | |
9484 | abort (); | |
9485 | } | |
9486 | ||
a3f97cbb JW |
9487 | if (origin != NULL) |
9488 | { | |
777ad4c2 | 9489 | if (declaration && ! local_scope_p (context_die)) |
10a11b75 JM |
9490 | abort (); |
9491 | ||
8d8238b6 JM |
9492 | /* Fixup die_parent for the abstract instance of a nested |
9493 | inline function. */ | |
9494 | if (old_die && old_die->die_parent == NULL) | |
9495 | add_child_die (context_die, old_die); | |
9496 | ||
4b674448 | 9497 | subr_die = new_die (DW_TAG_subprogram, context_die); |
a3f97cbb JW |
9498 | add_abstract_origin_attribute (subr_die, origin); |
9499 | } | |
4401bf24 JL |
9500 | else if (old_die && DECL_ABSTRACT (decl) |
9501 | && get_AT_unsigned (old_die, DW_AT_inline)) | |
9502 | { | |
9503 | /* This must be a redefinition of an extern inline function. | |
9504 | We can just reuse the old die here. */ | |
9505 | subr_die = old_die; | |
9506 | ||
9507 | /* Clear out the inlined attribute and parm types. */ | |
9508 | remove_AT (subr_die, DW_AT_inline); | |
9509 | remove_children (subr_die); | |
9510 | } | |
bdb669cb JM |
9511 | else if (old_die) |
9512 | { | |
4b674448 JM |
9513 | register unsigned file_index |
9514 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
a94dbf2c | 9515 | |
3a88cbd1 | 9516 | if (get_AT_flag (old_die, DW_AT_declaration) != 1) |
b75ab88b NC |
9517 | { |
9518 | /* ??? This can happen if there is a bug in the program, for | |
9519 | instance, if it has duplicate function definitions. Ideally, | |
9520 | we should detect this case and ignore it. For now, if we have | |
9521 | already reported an error, any error at all, then assume that | |
9522 | we got here because of a input error, not a dwarf2 bug. */ | |
b75ab88b NC |
9523 | if (errorcount) |
9524 | return; | |
9525 | abort (); | |
9526 | } | |
4b674448 JM |
9527 | |
9528 | /* If the definition comes from the same place as the declaration, | |
a94dbf2c JM |
9529 | maybe use the old DIE. We always want the DIE for this function |
9530 | that has the *_pc attributes to be under comp_unit_die so the | |
9531 | debugger can find it. For inlines, that is the concrete instance, | |
9532 | so we can use the old DIE here. For non-inline methods, we want a | |
9533 | specification DIE at toplevel, so we need a new DIE. For local | |
a96c67ec | 9534 | class methods, this doesn't apply; we just use the old DIE. */ |
a94dbf2c JM |
9535 | if ((DECL_ABSTRACT (decl) || old_die->die_parent == comp_unit_die |
9536 | || context_die == NULL) | |
a96c67ec JM |
9537 | && (DECL_ARTIFICIAL (decl) |
9538 | || (get_AT_unsigned (old_die, DW_AT_decl_file) == file_index | |
9539 | && (get_AT_unsigned (old_die, DW_AT_decl_line) | |
556273e0 | 9540 | == (unsigned) DECL_SOURCE_LINE (decl))))) |
bdb669cb | 9541 | { |
4b674448 JM |
9542 | subr_die = old_die; |
9543 | ||
9544 | /* Clear out the declaration attribute and the parm types. */ | |
9545 | remove_AT (subr_die, DW_AT_declaration); | |
9546 | remove_children (subr_die); | |
9547 | } | |
9548 | else | |
9549 | { | |
9550 | subr_die = new_die (DW_TAG_subprogram, context_die); | |
9551 | add_AT_die_ref (subr_die, DW_AT_specification, old_die); | |
bdb669cb JM |
9552 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
9553 | add_AT_unsigned (subr_die, DW_AT_decl_file, file_index); | |
9554 | if (get_AT_unsigned (old_die, DW_AT_decl_line) | |
556273e0 | 9555 | != (unsigned) DECL_SOURCE_LINE (decl)) |
bdb669cb JM |
9556 | add_AT_unsigned |
9557 | (subr_die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
9558 | } | |
9559 | } | |
a3f97cbb JW |
9560 | else |
9561 | { | |
777ad4c2 | 9562 | subr_die = new_die (DW_TAG_subprogram, context_die); |
556273e0 | 9563 | |
273dbe67 JM |
9564 | if (TREE_PUBLIC (decl)) |
9565 | add_AT_flag (subr_die, DW_AT_external, 1); | |
71dfc51f | 9566 | |
a3f97cbb | 9567 | add_name_and_src_coords_attributes (subr_die, decl); |
4927276d JM |
9568 | if (debug_info_level > DINFO_LEVEL_TERSE) |
9569 | { | |
9570 | register tree type = TREE_TYPE (decl); | |
71dfc51f | 9571 | |
4927276d JM |
9572 | add_prototyped_attribute (subr_die, type); |
9573 | add_type_attribute (subr_die, TREE_TYPE (type), 0, 0, context_die); | |
9574 | } | |
71dfc51f | 9575 | |
a3f97cbb | 9576 | add_pure_or_virtual_attribute (subr_die, decl); |
273dbe67 JM |
9577 | if (DECL_ARTIFICIAL (decl)) |
9578 | add_AT_flag (subr_die, DW_AT_artificial, 1); | |
a94dbf2c JM |
9579 | if (TREE_PROTECTED (decl)) |
9580 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_protected); | |
9581 | else if (TREE_PRIVATE (decl)) | |
9582 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 9583 | } |
4edb7b60 | 9584 | |
a94dbf2c JM |
9585 | if (declaration) |
9586 | { | |
777ad4c2 JM |
9587 | if (! origin) |
9588 | add_AT_flag (subr_die, DW_AT_declaration, 1); | |
a94dbf2c JM |
9589 | |
9590 | /* The first time we see a member function, it is in the context of | |
9591 | the class to which it belongs. We make sure of this by emitting | |
9592 | the class first. The next time is the definition, which is | |
9593 | handled above. The two may come from the same source text. */ | |
777ad4c2 | 9594 | if (DECL_CONTEXT (decl) || DECL_ABSTRACT (decl)) |
a94dbf2c JM |
9595 | equate_decl_number_to_die (decl, subr_die); |
9596 | } | |
9597 | else if (DECL_ABSTRACT (decl)) | |
a3f97cbb | 9598 | { |
10a11b75 | 9599 | if (DECL_INLINE (decl) && !flag_no_inline) |
61b32c02 | 9600 | { |
10a11b75 JM |
9601 | /* ??? Checking DECL_DEFER_OUTPUT is correct for static |
9602 | inline functions, but not for extern inline functions. | |
9603 | We can't get this completely correct because information | |
9604 | about whether the function was declared inline is not | |
9605 | saved anywhere. */ | |
9606 | if (DECL_DEFER_OUTPUT (decl)) | |
61b32c02 JM |
9607 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_inlined); |
9608 | else | |
10a11b75 | 9609 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_inlined); |
61b32c02 | 9610 | } |
61b32c02 | 9611 | else |
10a11b75 | 9612 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_not_inlined); |
61b32c02 | 9613 | |
a3f97cbb JW |
9614 | equate_decl_number_to_die (decl, subr_die); |
9615 | } | |
9616 | else if (!DECL_EXTERNAL (decl)) | |
9617 | { | |
71dfc51f | 9618 | if (origin == NULL_TREE) |
ba7b35df | 9619 | equate_decl_number_to_die (decl, subr_die); |
71dfc51f | 9620 | |
5c90448c JM |
9621 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_BEGIN_LABEL, |
9622 | current_funcdef_number); | |
7d4440be | 9623 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label_id); |
5c90448c JM |
9624 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_END_LABEL, |
9625 | current_funcdef_number); | |
a3f97cbb JW |
9626 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label_id); |
9627 | ||
d291dd49 JM |
9628 | add_pubname (decl, subr_die); |
9629 | add_arange (decl, subr_die); | |
9630 | ||
a3f97cbb | 9631 | #ifdef MIPS_DEBUGGING_INFO |
a3f97cbb JW |
9632 | /* Add a reference to the FDE for this routine. */ |
9633 | add_AT_fde_ref (subr_die, DW_AT_MIPS_fde, current_funcdef_fde); | |
9634 | #endif | |
9635 | ||
810429b7 JM |
9636 | /* Define the "frame base" location for this routine. We use the |
9637 | frame pointer or stack pointer registers, since the RTL for local | |
9638 | variables is relative to one of them. */ | |
b1ccbc24 RK |
9639 | fp_reg |
9640 | = frame_pointer_needed ? hard_frame_pointer_rtx : stack_pointer_rtx; | |
9641 | add_AT_loc (subr_die, DW_AT_frame_base, reg_loc_descriptor (fp_reg)); | |
a3f97cbb | 9642 | |
ef76d03b JW |
9643 | #if 0 |
9644 | /* ??? This fails for nested inline functions, because context_display | |
9645 | is not part of the state saved/restored for inline functions. */ | |
88dad228 | 9646 | if (current_function_needs_context) |
ef76d03b JW |
9647 | add_AT_location_description (subr_die, DW_AT_static_link, |
9648 | lookup_static_chain (decl)); | |
9649 | #endif | |
a3f97cbb JW |
9650 | } |
9651 | ||
9652 | /* Now output descriptions of the arguments for this function. This gets | |
556273e0 | 9653 | (unnecessarily?) complex because of the fact that the DECL_ARGUMENT list |
a3f97cbb JW |
9654 | for a FUNCTION_DECL doesn't indicate cases where there was a trailing |
9655 | `...' at the end of the formal parameter list. In order to find out if | |
9656 | there was a trailing ellipsis or not, we must instead look at the type | |
9657 | associated with the FUNCTION_DECL. This will be a node of type | |
9658 | FUNCTION_TYPE. If the chain of type nodes hanging off of this | |
556273e0 | 9659 | FUNCTION_TYPE node ends with a void_type_node then there should *not* be |
a3f97cbb | 9660 | an ellipsis at the end. */ |
71dfc51f | 9661 | |
a3f97cbb | 9662 | /* In the case where we are describing a mere function declaration, all we |
556273e0 | 9663 | need to do here (and all we *can* do here) is to describe the *types* of |
a3f97cbb | 9664 | its formal parameters. */ |
4927276d | 9665 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
71dfc51f | 9666 | ; |
4edb7b60 JM |
9667 | else if (declaration) |
9668 | gen_formal_types_die (TREE_TYPE (decl), subr_die); | |
a3f97cbb JW |
9669 | else |
9670 | { | |
9671 | /* Generate DIEs to represent all known formal parameters */ | |
9672 | register tree arg_decls = DECL_ARGUMENTS (decl); | |
9673 | register tree parm; | |
9674 | ||
9675 | /* When generating DIEs, generate the unspecified_parameters DIE | |
9676 | instead if we come across the arg "__builtin_va_alist" */ | |
9677 | for (parm = arg_decls; parm; parm = TREE_CHAIN (parm)) | |
71dfc51f RK |
9678 | if (TREE_CODE (parm) == PARM_DECL) |
9679 | { | |
db3cf6fb MS |
9680 | if (DECL_NAME (parm) |
9681 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
9682 | "__builtin_va_alist")) | |
71dfc51f RK |
9683 | gen_unspecified_parameters_die (parm, subr_die); |
9684 | else | |
9685 | gen_decl_die (parm, subr_die); | |
9686 | } | |
a3f97cbb JW |
9687 | |
9688 | /* Decide whether we need a unspecified_parameters DIE at the end. | |
556273e0 | 9689 | There are 2 more cases to do this for: 1) the ansi ... declaration - |
a3f97cbb JW |
9690 | this is detectable when the end of the arg list is not a |
9691 | void_type_node 2) an unprototyped function declaration (not a | |
9692 | definition). This just means that we have no info about the | |
9693 | parameters at all. */ | |
9694 | fn_arg_types = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
71dfc51f | 9695 | if (fn_arg_types != NULL) |
a3f97cbb JW |
9696 | { |
9697 | /* this is the prototyped case, check for ... */ | |
9698 | if (TREE_VALUE (tree_last (fn_arg_types)) != void_type_node) | |
71dfc51f | 9699 | gen_unspecified_parameters_die (decl, subr_die); |
a3f97cbb | 9700 | } |
71dfc51f RK |
9701 | else if (DECL_INITIAL (decl) == NULL_TREE) |
9702 | gen_unspecified_parameters_die (decl, subr_die); | |
a3f97cbb JW |
9703 | } |
9704 | ||
9705 | /* Output Dwarf info for all of the stuff within the body of the function | |
9706 | (if it has one - it may be just a declaration). */ | |
9707 | outer_scope = DECL_INITIAL (decl); | |
9708 | ||
d7248bff JM |
9709 | /* Note that here, `outer_scope' is a pointer to the outermost BLOCK |
9710 | node created to represent a function. This outermost BLOCK actually | |
9711 | represents the outermost binding contour for the function, i.e. the | |
9712 | contour in which the function's formal parameters and labels get | |
9713 | declared. Curiously, it appears that the front end doesn't actually | |
9714 | put the PARM_DECL nodes for the current function onto the BLOCK_VARS | |
9715 | list for this outer scope. (They are strung off of the DECL_ARGUMENTS | |
9716 | list for the function instead.) The BLOCK_VARS list for the | |
9717 | `outer_scope' does provide us with a list of the LABEL_DECL nodes for | |
9718 | the function however, and we output DWARF info for those in | |
9719 | decls_for_scope. Just within the `outer_scope' there will be a BLOCK | |
9720 | node representing the function's outermost pair of curly braces, and | |
9721 | any blocks used for the base and member initializers of a C++ | |
9722 | constructor function. */ | |
4edb7b60 | 9723 | if (! declaration && TREE_CODE (outer_scope) != ERROR_MARK) |
7e23cb16 JM |
9724 | { |
9725 | current_function_has_inlines = 0; | |
9726 | decls_for_scope (outer_scope, subr_die, 0); | |
71dfc51f | 9727 | |
ce61cc73 | 9728 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
7e23cb16 JM |
9729 | if (current_function_has_inlines) |
9730 | { | |
9731 | add_AT_flag (subr_die, DW_AT_MIPS_has_inlines, 1); | |
9732 | if (! comp_unit_has_inlines) | |
9733 | { | |
9734 | add_AT_flag (comp_unit_die, DW_AT_MIPS_has_inlines, 1); | |
9735 | comp_unit_has_inlines = 1; | |
9736 | } | |
9737 | } | |
9738 | #endif | |
9739 | } | |
a3f97cbb JW |
9740 | } |
9741 | ||
9742 | /* Generate a DIE to represent a declared data object. */ | |
71dfc51f | 9743 | |
a3f97cbb JW |
9744 | static void |
9745 | gen_variable_die (decl, context_die) | |
9746 | register tree decl; | |
9747 | register dw_die_ref context_die; | |
9748 | { | |
9749 | register tree origin = decl_ultimate_origin (decl); | |
9750 | register dw_die_ref var_die = new_die (DW_TAG_variable, context_die); | |
71dfc51f | 9751 | |
bdb669cb | 9752 | dw_die_ref old_die = lookup_decl_die (decl); |
9765e357 JM |
9753 | int declaration = (DECL_EXTERNAL (decl) |
9754 | || class_scope_p (context_die)); | |
4edb7b60 | 9755 | |
a3f97cbb | 9756 | if (origin != NULL) |
71dfc51f | 9757 | add_abstract_origin_attribute (var_die, origin); |
f76b8156 JW |
9758 | /* Loop unrolling can create multiple blocks that refer to the same |
9759 | static variable, so we must test for the DW_AT_declaration flag. */ | |
9760 | /* ??? Loop unrolling/reorder_blocks should perhaps be rewritten to | |
9761 | copy decls and set the DECL_ABSTRACT flag on them instead of | |
9762 | sharing them. */ | |
9763 | else if (old_die && TREE_STATIC (decl) | |
9764 | && get_AT_flag (old_die, DW_AT_declaration) == 1) | |
bdb669cb | 9765 | { |
e689ae67 | 9766 | /* This is a definition of a C++ class level static. */ |
bdb669cb JM |
9767 | add_AT_die_ref (var_die, DW_AT_specification, old_die); |
9768 | if (DECL_NAME (decl)) | |
9769 | { | |
9770 | register unsigned file_index | |
9771 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 9772 | |
bdb669cb JM |
9773 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
9774 | add_AT_unsigned (var_die, DW_AT_decl_file, file_index); | |
71dfc51f | 9775 | |
bdb669cb | 9776 | if (get_AT_unsigned (old_die, DW_AT_decl_line) |
556273e0 | 9777 | != (unsigned) DECL_SOURCE_LINE (decl)) |
71dfc51f RK |
9778 | |
9779 | add_AT_unsigned (var_die, DW_AT_decl_line, | |
9780 | DECL_SOURCE_LINE (decl)); | |
bdb669cb JM |
9781 | } |
9782 | } | |
a3f97cbb JW |
9783 | else |
9784 | { | |
9785 | add_name_and_src_coords_attributes (var_die, decl); | |
a3f97cbb JW |
9786 | add_type_attribute (var_die, TREE_TYPE (decl), |
9787 | TREE_READONLY (decl), | |
9788 | TREE_THIS_VOLATILE (decl), context_die); | |
71dfc51f | 9789 | |
273dbe67 JM |
9790 | if (TREE_PUBLIC (decl)) |
9791 | add_AT_flag (var_die, DW_AT_external, 1); | |
71dfc51f | 9792 | |
273dbe67 JM |
9793 | if (DECL_ARTIFICIAL (decl)) |
9794 | add_AT_flag (var_die, DW_AT_artificial, 1); | |
71dfc51f | 9795 | |
a94dbf2c JM |
9796 | if (TREE_PROTECTED (decl)) |
9797 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 9798 | |
a94dbf2c JM |
9799 | else if (TREE_PRIVATE (decl)) |
9800 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 9801 | } |
4edb7b60 JM |
9802 | |
9803 | if (declaration) | |
9804 | add_AT_flag (var_die, DW_AT_declaration, 1); | |
556273e0 | 9805 | |
9765e357 | 9806 | if (class_scope_p (context_die) || DECL_ABSTRACT (decl)) |
4edb7b60 JM |
9807 | equate_decl_number_to_die (decl, var_die); |
9808 | ||
9809 | if (! declaration && ! DECL_ABSTRACT (decl)) | |
a3f97cbb JW |
9810 | { |
9811 | add_location_or_const_value_attribute (var_die, decl); | |
d291dd49 | 9812 | add_pubname (decl, var_die); |
a3f97cbb | 9813 | } |
1bfb5f8f JM |
9814 | else |
9815 | tree_add_const_value_attribute (var_die, decl); | |
a3f97cbb JW |
9816 | } |
9817 | ||
9818 | /* Generate a DIE to represent a label identifier. */ | |
71dfc51f | 9819 | |
a3f97cbb JW |
9820 | static void |
9821 | gen_label_die (decl, context_die) | |
9822 | register tree decl; | |
9823 | register dw_die_ref context_die; | |
9824 | { | |
9825 | register tree origin = decl_ultimate_origin (decl); | |
9826 | register dw_die_ref lbl_die = new_die (DW_TAG_label, context_die); | |
9827 | register rtx insn; | |
9828 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f | 9829 | |
a3f97cbb | 9830 | if (origin != NULL) |
71dfc51f | 9831 | add_abstract_origin_attribute (lbl_die, origin); |
a3f97cbb | 9832 | else |
71dfc51f RK |
9833 | add_name_and_src_coords_attributes (lbl_die, decl); |
9834 | ||
a3f97cbb | 9835 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 9836 | equate_decl_number_to_die (decl, lbl_die); |
a3f97cbb JW |
9837 | else |
9838 | { | |
9839 | insn = DECL_RTL (decl); | |
088e7160 NC |
9840 | |
9841 | /* Deleted labels are programmer specified labels which have been | |
9842 | eliminated because of various optimisations. We still emit them | |
9843 | here so that it is possible to put breakpoints on them. */ | |
9844 | if (GET_CODE (insn) == CODE_LABEL | |
9845 | || ((GET_CODE (insn) == NOTE | |
9846 | && NOTE_LINE_NUMBER (insn) == NOTE_INSN_DELETED_LABEL))) | |
a3f97cbb | 9847 | { |
556273e0 KH |
9848 | /* When optimization is enabled (via -O) some parts of the compiler |
9849 | (e.g. jump.c and cse.c) may try to delete CODE_LABEL insns which | |
a3f97cbb JW |
9850 | represent source-level labels which were explicitly declared by |
9851 | the user. This really shouldn't be happening though, so catch | |
9852 | it if it ever does happen. */ | |
9853 | if (INSN_DELETED_P (insn)) | |
71dfc51f RK |
9854 | abort (); |
9855 | ||
66234570 | 9856 | ASM_GENERATE_INTERNAL_LABEL (label, "L", CODE_LABEL_NUMBER (insn)); |
a3f97cbb JW |
9857 | add_AT_lbl_id (lbl_die, DW_AT_low_pc, label); |
9858 | } | |
9859 | } | |
9860 | } | |
9861 | ||
9862 | /* Generate a DIE for a lexical block. */ | |
71dfc51f | 9863 | |
a3f97cbb | 9864 | static void |
d7248bff | 9865 | gen_lexical_block_die (stmt, context_die, depth) |
a3f97cbb JW |
9866 | register tree stmt; |
9867 | register dw_die_ref context_die; | |
d7248bff | 9868 | int depth; |
a3f97cbb JW |
9869 | { |
9870 | register dw_die_ref stmt_die = new_die (DW_TAG_lexical_block, context_die); | |
9871 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f RK |
9872 | |
9873 | if (! BLOCK_ABSTRACT (stmt)) | |
a3f97cbb | 9874 | { |
5c90448c | 9875 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
18c038b9 | 9876 | BLOCK_NUMBER (stmt)); |
a3f97cbb | 9877 | add_AT_lbl_id (stmt_die, DW_AT_low_pc, label); |
18c038b9 MM |
9878 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, |
9879 | BLOCK_NUMBER (stmt)); | |
a3f97cbb JW |
9880 | add_AT_lbl_id (stmt_die, DW_AT_high_pc, label); |
9881 | } | |
71dfc51f | 9882 | |
d7248bff | 9883 | decls_for_scope (stmt, stmt_die, depth); |
a3f97cbb JW |
9884 | } |
9885 | ||
9886 | /* Generate a DIE for an inlined subprogram. */ | |
71dfc51f | 9887 | |
a3f97cbb | 9888 | static void |
d7248bff | 9889 | gen_inlined_subroutine_die (stmt, context_die, depth) |
a3f97cbb JW |
9890 | register tree stmt; |
9891 | register dw_die_ref context_die; | |
d7248bff | 9892 | int depth; |
a3f97cbb | 9893 | { |
71dfc51f | 9894 | if (! BLOCK_ABSTRACT (stmt)) |
a3f97cbb | 9895 | { |
71dfc51f RK |
9896 | register dw_die_ref subr_die |
9897 | = new_die (DW_TAG_inlined_subroutine, context_die); | |
ab72d377 | 9898 | register tree decl = block_ultimate_origin (stmt); |
d7248bff | 9899 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 9900 | |
10a11b75 JM |
9901 | /* Emit info for the abstract instance first, if we haven't yet. */ |
9902 | gen_abstract_function (decl); | |
9903 | ||
ab72d377 | 9904 | add_abstract_origin_attribute (subr_die, decl); |
5c90448c | 9905 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
18c038b9 | 9906 | BLOCK_NUMBER (stmt)); |
a3f97cbb | 9907 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label); |
18c038b9 MM |
9908 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, |
9909 | BLOCK_NUMBER (stmt)); | |
a3f97cbb | 9910 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label); |
d7248bff | 9911 | decls_for_scope (stmt, subr_die, depth); |
7e23cb16 | 9912 | current_function_has_inlines = 1; |
a3f97cbb | 9913 | } |
a3f97cbb JW |
9914 | } |
9915 | ||
9916 | /* Generate a DIE for a field in a record, or structure. */ | |
71dfc51f | 9917 | |
a3f97cbb JW |
9918 | static void |
9919 | gen_field_die (decl, context_die) | |
9920 | register tree decl; | |
9921 | register dw_die_ref context_die; | |
9922 | { | |
9923 | register dw_die_ref decl_die = new_die (DW_TAG_member, context_die); | |
71dfc51f | 9924 | |
a3f97cbb | 9925 | add_name_and_src_coords_attributes (decl_die, decl); |
a3f97cbb JW |
9926 | add_type_attribute (decl_die, member_declared_type (decl), |
9927 | TREE_READONLY (decl), TREE_THIS_VOLATILE (decl), | |
9928 | context_die); | |
71dfc51f | 9929 | |
a3f97cbb JW |
9930 | /* If this is a bit field... */ |
9931 | if (DECL_BIT_FIELD_TYPE (decl)) | |
9932 | { | |
9933 | add_byte_size_attribute (decl_die, decl); | |
9934 | add_bit_size_attribute (decl_die, decl); | |
9935 | add_bit_offset_attribute (decl_die, decl); | |
9936 | } | |
71dfc51f | 9937 | |
a94dbf2c JM |
9938 | if (TREE_CODE (DECL_FIELD_CONTEXT (decl)) != UNION_TYPE) |
9939 | add_data_member_location_attribute (decl_die, decl); | |
71dfc51f | 9940 | |
273dbe67 JM |
9941 | if (DECL_ARTIFICIAL (decl)) |
9942 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
71dfc51f | 9943 | |
a94dbf2c JM |
9944 | if (TREE_PROTECTED (decl)) |
9945 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 9946 | |
a94dbf2c JM |
9947 | else if (TREE_PRIVATE (decl)) |
9948 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb JW |
9949 | } |
9950 | ||
ab72d377 JM |
9951 | #if 0 |
9952 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. | |
9953 | Use modified_type_die instead. | |
a3f97cbb JW |
9954 | We keep this code here just in case these types of DIEs may be needed to |
9955 | represent certain things in other languages (e.g. Pascal) someday. */ | |
9956 | static void | |
9957 | gen_pointer_type_die (type, context_die) | |
9958 | register tree type; | |
9959 | register dw_die_ref context_die; | |
9960 | { | |
71dfc51f RK |
9961 | register dw_die_ref ptr_die |
9962 | = new_die (DW_TAG_pointer_type, scope_die_for (type, context_die)); | |
9963 | ||
a3f97cbb | 9964 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 9965 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 9966 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb JW |
9967 | } |
9968 | ||
ab72d377 JM |
9969 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. |
9970 | Use modified_type_die instead. | |
a3f97cbb JW |
9971 | We keep this code here just in case these types of DIEs may be needed to |
9972 | represent certain things in other languages (e.g. Pascal) someday. */ | |
9973 | static void | |
9974 | gen_reference_type_die (type, context_die) | |
9975 | register tree type; | |
9976 | register dw_die_ref context_die; | |
9977 | { | |
71dfc51f RK |
9978 | register dw_die_ref ref_die |
9979 | = new_die (DW_TAG_reference_type, scope_die_for (type, context_die)); | |
9980 | ||
a3f97cbb | 9981 | equate_type_number_to_die (type, ref_die); |
a3f97cbb | 9982 | add_type_attribute (ref_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 9983 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb | 9984 | } |
ab72d377 | 9985 | #endif |
a3f97cbb JW |
9986 | |
9987 | /* Generate a DIE for a pointer to a member type. */ | |
9988 | static void | |
9989 | gen_ptr_to_mbr_type_die (type, context_die) | |
9990 | register tree type; | |
9991 | register dw_die_ref context_die; | |
9992 | { | |
71dfc51f RK |
9993 | register dw_die_ref ptr_die |
9994 | = new_die (DW_TAG_ptr_to_member_type, scope_die_for (type, context_die)); | |
9995 | ||
a3f97cbb | 9996 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 9997 | add_AT_die_ref (ptr_die, DW_AT_containing_type, |
bdb669cb | 9998 | lookup_type_die (TYPE_OFFSET_BASETYPE (type))); |
a3f97cbb JW |
9999 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
10000 | } | |
10001 | ||
10002 | /* Generate the DIE for the compilation unit. */ | |
71dfc51f | 10003 | |
a96c67ec JM |
10004 | static dw_die_ref |
10005 | gen_compile_unit_die (filename) | |
10006 | register const char *filename; | |
a3f97cbb | 10007 | { |
a96c67ec | 10008 | register dw_die_ref die; |
a3f97cbb | 10009 | char producer[250]; |
d3e3972c | 10010 | const char *wd = getpwd (); |
a96c67ec | 10011 | int language; |
a3f97cbb | 10012 | |
a96c67ec JM |
10013 | die = new_die (DW_TAG_compile_unit, NULL); |
10014 | add_name_attribute (die, filename); | |
bdb669cb | 10015 | |
a96c67ec JM |
10016 | if (wd != NULL && filename[0] != DIR_SEPARATOR) |
10017 | add_AT_string (die, DW_AT_comp_dir, wd); | |
a3f97cbb JW |
10018 | |
10019 | sprintf (producer, "%s %s", language_string, version_string); | |
10020 | ||
10021 | #ifdef MIPS_DEBUGGING_INFO | |
10022 | /* The MIPS/SGI compilers place the 'cc' command line options in the producer | |
10023 | string. The SGI debugger looks for -g, -g1, -g2, or -g3; if they do | |
10024 | not appear in the producer string, the debugger reaches the conclusion | |
10025 | that the object file is stripped and has no debugging information. | |
10026 | To get the MIPS/SGI debugger to believe that there is debugging | |
10027 | information in the object file, we add a -g to the producer string. */ | |
4927276d JM |
10028 | if (debug_info_level > DINFO_LEVEL_TERSE) |
10029 | strcat (producer, " -g"); | |
a3f97cbb JW |
10030 | #endif |
10031 | ||
a96c67ec | 10032 | add_AT_string (die, DW_AT_producer, producer); |
a9d38797 | 10033 | |
a3f97cbb | 10034 | if (strcmp (language_string, "GNU C++") == 0) |
a96c67ec | 10035 | language = DW_LANG_C_plus_plus; |
a3f97cbb | 10036 | else if (strcmp (language_string, "GNU Ada") == 0) |
a96c67ec | 10037 | language = DW_LANG_Ada83; |
a9d38797 | 10038 | else if (strcmp (language_string, "GNU F77") == 0) |
a96c67ec | 10039 | language = DW_LANG_Fortran77; |
bc28c45b | 10040 | else if (strcmp (language_string, "GNU Pascal") == 0) |
a96c67ec | 10041 | language = DW_LANG_Pascal83; |
28985b81 AG |
10042 | else if (strcmp (language_string, "GNU Java") == 0) |
10043 | language = DW_LANG_Java; | |
a3f97cbb | 10044 | else if (flag_traditional) |
a96c67ec | 10045 | language = DW_LANG_C; |
a3f97cbb | 10046 | else |
a96c67ec | 10047 | language = DW_LANG_C89; |
a9d38797 | 10048 | |
a96c67ec JM |
10049 | add_AT_unsigned (die, DW_AT_language, language); |
10050 | ||
10051 | return die; | |
a3f97cbb JW |
10052 | } |
10053 | ||
10054 | /* Generate a DIE for a string type. */ | |
71dfc51f | 10055 | |
a3f97cbb JW |
10056 | static void |
10057 | gen_string_type_die (type, context_die) | |
10058 | register tree type; | |
10059 | register dw_die_ref context_die; | |
10060 | { | |
71dfc51f RK |
10061 | register dw_die_ref type_die |
10062 | = new_die (DW_TAG_string_type, scope_die_for (type, context_die)); | |
10063 | ||
bdb669cb | 10064 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
10065 | |
10066 | /* Fudge the string length attribute for now. */ | |
556273e0 | 10067 | |
a3f97cbb | 10068 | /* TODO: add string length info. |
71dfc51f | 10069 | string_length_attribute (TYPE_MAX_VALUE (TYPE_DOMAIN (type))); |
a3f97cbb JW |
10070 | bound_representation (upper_bound, 0, 'u'); */ |
10071 | } | |
10072 | ||
61b32c02 | 10073 | /* Generate the DIE for a base class. */ |
71dfc51f | 10074 | |
61b32c02 JM |
10075 | static void |
10076 | gen_inheritance_die (binfo, context_die) | |
10077 | register tree binfo; | |
10078 | register dw_die_ref context_die; | |
10079 | { | |
10080 | dw_die_ref die = new_die (DW_TAG_inheritance, context_die); | |
71dfc51f | 10081 | |
61b32c02 JM |
10082 | add_type_attribute (die, BINFO_TYPE (binfo), 0, 0, context_die); |
10083 | add_data_member_location_attribute (die, binfo); | |
71dfc51f | 10084 | |
61b32c02 JM |
10085 | if (TREE_VIA_VIRTUAL (binfo)) |
10086 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); | |
10087 | if (TREE_VIA_PUBLIC (binfo)) | |
10088 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_public); | |
10089 | else if (TREE_VIA_PROTECTED (binfo)) | |
10090 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_protected); | |
10091 | } | |
10092 | ||
956d6950 | 10093 | /* Generate a DIE for a class member. */ |
71dfc51f | 10094 | |
a3f97cbb JW |
10095 | static void |
10096 | gen_member_die (type, context_die) | |
10097 | register tree type; | |
10098 | register dw_die_ref context_die; | |
10099 | { | |
61b32c02 | 10100 | register tree member; |
10a11b75 | 10101 | dw_die_ref child; |
71dfc51f | 10102 | |
a3f97cbb JW |
10103 | /* If this is not an incomplete type, output descriptions of each of its |
10104 | members. Note that as we output the DIEs necessary to represent the | |
10105 | members of this record or union type, we will also be trying to output | |
10106 | DIEs to represent the *types* of those members. However the `type' | |
556273e0 KH |
10107 | function (above) will specifically avoid generating type DIEs for member |
10108 | types *within* the list of member DIEs for this (containing) type execpt | |
a3f97cbb JW |
10109 | for those types (of members) which are explicitly marked as also being |
10110 | members of this (containing) type themselves. The g++ front- end can | |
10111 | force any given type to be treated as a member of some other | |
556273e0 | 10112 | (containing) type by setting the TYPE_CONTEXT of the given (member) type |
a3f97cbb JW |
10113 | to point to the TREE node representing the appropriate (containing) |
10114 | type. */ | |
10115 | ||
61b32c02 JM |
10116 | /* First output info about the base classes. */ |
10117 | if (TYPE_BINFO (type) && TYPE_BINFO_BASETYPES (type)) | |
a3f97cbb | 10118 | { |
61b32c02 JM |
10119 | register tree bases = TYPE_BINFO_BASETYPES (type); |
10120 | register int n_bases = TREE_VEC_LENGTH (bases); | |
10121 | register int i; | |
10122 | ||
10123 | for (i = 0; i < n_bases; i++) | |
10124 | gen_inheritance_die (TREE_VEC_ELT (bases, i), context_die); | |
a3f97cbb JW |
10125 | } |
10126 | ||
61b32c02 JM |
10127 | /* Now output info about the data members and type members. */ |
10128 | for (member = TYPE_FIELDS (type); member; member = TREE_CHAIN (member)) | |
10a11b75 JM |
10129 | { |
10130 | /* If we thought we were generating minimal debug info for TYPE | |
10131 | and then changed our minds, some of the member declarations | |
10132 | may have already been defined. Don't define them again, but | |
10133 | do put them in the right order. */ | |
10134 | ||
10135 | child = lookup_decl_die (member); | |
10136 | if (child) | |
10137 | splice_child_die (context_die, child); | |
10138 | else | |
10139 | gen_decl_die (member, context_die); | |
10140 | } | |
61b32c02 | 10141 | |
a3f97cbb | 10142 | /* Now output info about the function members (if any). */ |
61b32c02 | 10143 | for (member = TYPE_METHODS (type); member; member = TREE_CHAIN (member)) |
10a11b75 JM |
10144 | { |
10145 | child = lookup_decl_die (member); | |
10146 | if (child) | |
10147 | splice_child_die (context_die, child); | |
10148 | else | |
10149 | gen_decl_die (member, context_die); | |
10150 | } | |
a3f97cbb JW |
10151 | } |
10152 | ||
10a11b75 JM |
10153 | /* Generate a DIE for a structure or union type. If TYPE_DECL_SUPPRESS_DEBUG |
10154 | is set, we pretend that the type was never defined, so we only get the | |
10155 | member DIEs needed by later specification DIEs. */ | |
71dfc51f | 10156 | |
a3f97cbb | 10157 | static void |
273dbe67 | 10158 | gen_struct_or_union_type_die (type, context_die) |
a3f97cbb | 10159 | register tree type; |
a3f97cbb JW |
10160 | register dw_die_ref context_die; |
10161 | { | |
273dbe67 | 10162 | register dw_die_ref type_die = lookup_type_die (type); |
a082c85a JM |
10163 | register dw_die_ref scope_die = 0; |
10164 | register int nested = 0; | |
10a11b75 | 10165 | int complete = (TYPE_SIZE (type) |
65e1263a JW |
10166 | && (! TYPE_STUB_DECL (type) |
10167 | || ! TYPE_DECL_SUPPRESS_DEBUG (TYPE_STUB_DECL (type)))); | |
273dbe67 | 10168 | |
10a11b75 | 10169 | if (type_die && ! complete) |
273dbe67 | 10170 | return; |
a082c85a | 10171 | |
71dfc51f | 10172 | if (TYPE_CONTEXT (type) != NULL_TREE |
5f2f160c | 10173 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type))) |
a082c85a JM |
10174 | nested = 1; |
10175 | ||
a94dbf2c | 10176 | scope_die = scope_die_for (type, context_die); |
a082c85a JM |
10177 | |
10178 | if (! type_die || (nested && scope_die == comp_unit_die)) | |
273dbe67 | 10179 | /* First occurrence of type or toplevel definition of nested class. */ |
a3f97cbb | 10180 | { |
273dbe67 | 10181 | register dw_die_ref old_die = type_die; |
71dfc51f | 10182 | |
a3f97cbb JW |
10183 | type_die = new_die (TREE_CODE (type) == RECORD_TYPE |
10184 | ? DW_TAG_structure_type : DW_TAG_union_type, | |
a082c85a | 10185 | scope_die); |
a3f97cbb | 10186 | equate_type_number_to_die (type, type_die); |
273dbe67 JM |
10187 | if (old_die) |
10188 | add_AT_die_ref (type_die, DW_AT_specification, old_die); | |
5de0e8d4 JM |
10189 | else |
10190 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 10191 | } |
4b674448 | 10192 | else |
273dbe67 | 10193 | remove_AT (type_die, DW_AT_declaration); |
a3f97cbb JW |
10194 | |
10195 | /* If this type has been completed, then give it a byte_size attribute and | |
10196 | then give a list of members. */ | |
2081603c | 10197 | if (complete) |
a3f97cbb | 10198 | { |
556273e0 | 10199 | /* Prevent infinite recursion in cases where the type of some member of |
a3f97cbb JW |
10200 | this type is expressed in terms of this type itself. */ |
10201 | TREE_ASM_WRITTEN (type) = 1; | |
273dbe67 | 10202 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 10203 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 10204 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 10205 | |
ef76d03b JW |
10206 | /* If the first reference to this type was as the return type of an |
10207 | inline function, then it may not have a parent. Fix this now. */ | |
10208 | if (type_die->die_parent == NULL) | |
10209 | add_child_die (scope_die, type_die); | |
10210 | ||
273dbe67 JM |
10211 | push_decl_scope (type); |
10212 | gen_member_die (type, type_die); | |
10213 | pop_decl_scope (); | |
71dfc51f | 10214 | |
a94dbf2c JM |
10215 | /* GNU extension: Record what type our vtable lives in. */ |
10216 | if (TYPE_VFIELD (type)) | |
10217 | { | |
10218 | tree vtype = DECL_FCONTEXT (TYPE_VFIELD (type)); | |
71dfc51f | 10219 | |
de6e505e JM |
10220 | gen_type_die (vtype, context_die); |
10221 | add_AT_die_ref (type_die, DW_AT_containing_type, | |
10222 | lookup_type_die (vtype)); | |
a94dbf2c | 10223 | } |
a3f97cbb | 10224 | } |
4b674448 | 10225 | else |
8a8c3656 JM |
10226 | { |
10227 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a30d4514 | 10228 | |
9765e357 | 10229 | /* We don't need to do this for function-local types. */ |
f19f17e0 | 10230 | if (! decl_function_context (TYPE_STUB_DECL (type))) |
a30d4514 | 10231 | add_incomplete_type (type); |
8a8c3656 | 10232 | } |
a3f97cbb JW |
10233 | } |
10234 | ||
10235 | /* Generate a DIE for a subroutine _type_. */ | |
71dfc51f | 10236 | |
a3f97cbb JW |
10237 | static void |
10238 | gen_subroutine_type_die (type, context_die) | |
10239 | register tree type; | |
10240 | register dw_die_ref context_die; | |
10241 | { | |
10242 | register tree return_type = TREE_TYPE (type); | |
71dfc51f RK |
10243 | register dw_die_ref subr_die |
10244 | = new_die (DW_TAG_subroutine_type, scope_die_for (type, context_die)); | |
10245 | ||
a3f97cbb JW |
10246 | equate_type_number_to_die (type, subr_die); |
10247 | add_prototyped_attribute (subr_die, type); | |
a3f97cbb | 10248 | add_type_attribute (subr_die, return_type, 0, 0, context_die); |
a94dbf2c | 10249 | gen_formal_types_die (type, subr_die); |
a3f97cbb JW |
10250 | } |
10251 | ||
10252 | /* Generate a DIE for a type definition */ | |
71dfc51f | 10253 | |
a3f97cbb JW |
10254 | static void |
10255 | gen_typedef_die (decl, context_die) | |
10256 | register tree decl; | |
10257 | register dw_die_ref context_die; | |
10258 | { | |
a3f97cbb | 10259 | register dw_die_ref type_die; |
a94dbf2c JM |
10260 | register tree origin; |
10261 | ||
10262 | if (TREE_ASM_WRITTEN (decl)) | |
10263 | return; | |
10264 | TREE_ASM_WRITTEN (decl) = 1; | |
10265 | ||
777ad4c2 | 10266 | type_die = new_die (DW_TAG_typedef, context_die); |
a94dbf2c | 10267 | origin = decl_ultimate_origin (decl); |
a3f97cbb | 10268 | if (origin != NULL) |
a94dbf2c | 10269 | add_abstract_origin_attribute (type_die, origin); |
a3f97cbb JW |
10270 | else |
10271 | { | |
a94dbf2c | 10272 | register tree type; |
a3f97cbb | 10273 | add_name_and_src_coords_attributes (type_die, decl); |
a94dbf2c JM |
10274 | if (DECL_ORIGINAL_TYPE (decl)) |
10275 | { | |
10276 | type = DECL_ORIGINAL_TYPE (decl); | |
62e3bf54 JM |
10277 | |
10278 | if (type == TREE_TYPE (decl)) | |
10279 | abort (); | |
10280 | else | |
10281 | equate_type_number_to_die (TREE_TYPE (decl), type_die); | |
a94dbf2c JM |
10282 | } |
10283 | else | |
10284 | type = TREE_TYPE (decl); | |
10285 | add_type_attribute (type_die, type, TREE_READONLY (decl), | |
10286 | TREE_THIS_VOLATILE (decl), context_die); | |
a3f97cbb | 10287 | } |
71dfc51f | 10288 | |
a3f97cbb | 10289 | if (DECL_ABSTRACT (decl)) |
a94dbf2c | 10290 | equate_decl_number_to_die (decl, type_die); |
a3f97cbb JW |
10291 | } |
10292 | ||
10293 | /* Generate a type description DIE. */ | |
71dfc51f | 10294 | |
a3f97cbb JW |
10295 | static void |
10296 | gen_type_die (type, context_die) | |
10297 | register tree type; | |
10298 | register dw_die_ref context_die; | |
10299 | { | |
348bb3c7 JM |
10300 | int need_pop; |
10301 | ||
71dfc51f RK |
10302 | if (type == NULL_TREE || type == error_mark_node) |
10303 | return; | |
a3f97cbb | 10304 | |
38e01259 | 10305 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
10306 | this type (i.e. without any const or volatile qualifiers) so get the |
10307 | main variant (i.e. the unqualified version) of this type now. */ | |
10308 | type = type_main_variant (type); | |
10309 | ||
10310 | if (TREE_ASM_WRITTEN (type)) | |
71dfc51f | 10311 | return; |
a3f97cbb | 10312 | |
a94dbf2c JM |
10313 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
10314 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
556273e0 | 10315 | { |
a94dbf2c JM |
10316 | TREE_ASM_WRITTEN (type) = 1; |
10317 | gen_decl_die (TYPE_NAME (type), context_die); | |
10318 | return; | |
10319 | } | |
10320 | ||
a3f97cbb JW |
10321 | switch (TREE_CODE (type)) |
10322 | { | |
10323 | case ERROR_MARK: | |
10324 | break; | |
10325 | ||
10326 | case POINTER_TYPE: | |
10327 | case REFERENCE_TYPE: | |
956d6950 JL |
10328 | /* We must set TREE_ASM_WRITTEN in case this is a recursive type. This |
10329 | ensures that the gen_type_die recursion will terminate even if the | |
10330 | type is recursive. Recursive types are possible in Ada. */ | |
10331 | /* ??? We could perhaps do this for all types before the switch | |
10332 | statement. */ | |
10333 | TREE_ASM_WRITTEN (type) = 1; | |
10334 | ||
a3f97cbb JW |
10335 | /* For these types, all that is required is that we output a DIE (or a |
10336 | set of DIEs) to represent the "basis" type. */ | |
10337 | gen_type_die (TREE_TYPE (type), context_die); | |
10338 | break; | |
10339 | ||
10340 | case OFFSET_TYPE: | |
556273e0 | 10341 | /* This code is used for C++ pointer-to-data-member types. |
71dfc51f | 10342 | Output a description of the relevant class type. */ |
a3f97cbb | 10343 | gen_type_die (TYPE_OFFSET_BASETYPE (type), context_die); |
71dfc51f | 10344 | |
a3f97cbb JW |
10345 | /* Output a description of the type of the object pointed to. */ |
10346 | gen_type_die (TREE_TYPE (type), context_die); | |
71dfc51f | 10347 | |
a3f97cbb JW |
10348 | /* Now output a DIE to represent this pointer-to-data-member type |
10349 | itself. */ | |
10350 | gen_ptr_to_mbr_type_die (type, context_die); | |
10351 | break; | |
10352 | ||
10353 | case SET_TYPE: | |
10354 | gen_type_die (TYPE_DOMAIN (type), context_die); | |
10355 | gen_set_type_die (type, context_die); | |
10356 | break; | |
10357 | ||
10358 | case FILE_TYPE: | |
10359 | gen_type_die (TREE_TYPE (type), context_die); | |
10360 | abort (); /* No way to represent these in Dwarf yet! */ | |
10361 | break; | |
10362 | ||
10363 | case FUNCTION_TYPE: | |
10364 | /* Force out return type (in case it wasn't forced out already). */ | |
10365 | gen_type_die (TREE_TYPE (type), context_die); | |
10366 | gen_subroutine_type_die (type, context_die); | |
10367 | break; | |
10368 | ||
10369 | case METHOD_TYPE: | |
10370 | /* Force out return type (in case it wasn't forced out already). */ | |
10371 | gen_type_die (TREE_TYPE (type), context_die); | |
10372 | gen_subroutine_type_die (type, context_die); | |
10373 | break; | |
10374 | ||
10375 | case ARRAY_TYPE: | |
10376 | if (TYPE_STRING_FLAG (type) && TREE_CODE (TREE_TYPE (type)) == CHAR_TYPE) | |
10377 | { | |
10378 | gen_type_die (TREE_TYPE (type), context_die); | |
10379 | gen_string_type_die (type, context_die); | |
10380 | } | |
10381 | else | |
71dfc51f | 10382 | gen_array_type_die (type, context_die); |
a3f97cbb JW |
10383 | break; |
10384 | ||
4061f623 BS |
10385 | case VECTOR_TYPE: |
10386 | gen_type_die (TYPE_DEBUG_REPRESENTATION_TYPE (type), context_die); | |
10387 | break; | |
10388 | ||
a3f97cbb JW |
10389 | case ENUMERAL_TYPE: |
10390 | case RECORD_TYPE: | |
10391 | case UNION_TYPE: | |
10392 | case QUAL_UNION_TYPE: | |
a082c85a | 10393 | /* If this is a nested type whose containing class hasn't been |
348bb3c7 JM |
10394 | written out yet, writing it out will cover this one, too. |
10395 | This does not apply to instantiations of member class templates; | |
10396 | they need to be added to the containing class as they are | |
777ad4c2 | 10397 | generated. FIXME: This hurts the idea of combining type decls |
348bb3c7 JM |
10398 | from multiple TUs, since we can't predict what set of template |
10399 | instantiations we'll get. */ | |
a082c85a | 10400 | if (TYPE_CONTEXT (type) |
5f2f160c | 10401 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type)) |
a082c85a | 10402 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) |
a94dbf2c JM |
10403 | { |
10404 | gen_type_die (TYPE_CONTEXT (type), context_die); | |
10405 | ||
348bb3c7 | 10406 | if (TREE_ASM_WRITTEN (type)) |
a94dbf2c JM |
10407 | return; |
10408 | ||
10409 | /* If that failed, attach ourselves to the stub. */ | |
10410 | push_decl_scope (TYPE_CONTEXT (type)); | |
10411 | context_die = lookup_type_die (TYPE_CONTEXT (type)); | |
348bb3c7 | 10412 | need_pop = 1; |
a94dbf2c | 10413 | } |
348bb3c7 JM |
10414 | else |
10415 | need_pop = 0; | |
a94dbf2c JM |
10416 | |
10417 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
273dbe67 | 10418 | gen_enumeration_type_die (type, context_die); |
a3f97cbb | 10419 | else |
273dbe67 | 10420 | gen_struct_or_union_type_die (type, context_die); |
4b674448 | 10421 | |
348bb3c7 | 10422 | if (need_pop) |
a94dbf2c JM |
10423 | pop_decl_scope (); |
10424 | ||
4b674448 | 10425 | /* Don't set TREE_ASM_WRITTEN on an incomplete struct; we want to fix |
a082c85a JM |
10426 | it up if it is ever completed. gen_*_type_die will set it for us |
10427 | when appropriate. */ | |
10428 | return; | |
a3f97cbb JW |
10429 | |
10430 | case VOID_TYPE: | |
10431 | case INTEGER_TYPE: | |
10432 | case REAL_TYPE: | |
10433 | case COMPLEX_TYPE: | |
10434 | case BOOLEAN_TYPE: | |
10435 | case CHAR_TYPE: | |
10436 | /* No DIEs needed for fundamental types. */ | |
10437 | break; | |
10438 | ||
10439 | case LANG_TYPE: | |
10440 | /* No Dwarf representation currently defined. */ | |
10441 | break; | |
10442 | ||
10443 | default: | |
10444 | abort (); | |
10445 | } | |
10446 | ||
10447 | TREE_ASM_WRITTEN (type) = 1; | |
10448 | } | |
10449 | ||
10450 | /* Generate a DIE for a tagged type instantiation. */ | |
71dfc51f | 10451 | |
a3f97cbb JW |
10452 | static void |
10453 | gen_tagged_type_instantiation_die (type, context_die) | |
10454 | register tree type; | |
10455 | register dw_die_ref context_die; | |
10456 | { | |
71dfc51f RK |
10457 | if (type == NULL_TREE || type == error_mark_node) |
10458 | return; | |
a3f97cbb | 10459 | |
38e01259 | 10460 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
10461 | this type (i.e. without any const or volatile qualifiers) so make sure |
10462 | that we have the main variant (i.e. the unqualified version) of this | |
10463 | type now. */ | |
bbc6ae08 | 10464 | if (type != type_main_variant (type)) |
3a88cbd1 | 10465 | abort (); |
a3f97cbb | 10466 | |
203588e7 | 10467 | /* Do not check TREE_ASM_WRITTEN (type) as it may not be set if this is |
bbc6ae08 | 10468 | an instance of an unresolved type. */ |
556273e0 | 10469 | |
a3f97cbb JW |
10470 | switch (TREE_CODE (type)) |
10471 | { | |
10472 | case ERROR_MARK: | |
10473 | break; | |
10474 | ||
10475 | case ENUMERAL_TYPE: | |
10476 | gen_inlined_enumeration_type_die (type, context_die); | |
10477 | break; | |
10478 | ||
10479 | case RECORD_TYPE: | |
10480 | gen_inlined_structure_type_die (type, context_die); | |
10481 | break; | |
10482 | ||
10483 | case UNION_TYPE: | |
10484 | case QUAL_UNION_TYPE: | |
10485 | gen_inlined_union_type_die (type, context_die); | |
10486 | break; | |
10487 | ||
10488 | default: | |
71dfc51f | 10489 | abort (); |
a3f97cbb JW |
10490 | } |
10491 | } | |
10492 | ||
10493 | /* Generate a DW_TAG_lexical_block DIE followed by DIEs to represent all of the | |
10494 | things which are local to the given block. */ | |
71dfc51f | 10495 | |
a3f97cbb | 10496 | static void |
d7248bff | 10497 | gen_block_die (stmt, context_die, depth) |
a3f97cbb JW |
10498 | register tree stmt; |
10499 | register dw_die_ref context_die; | |
d7248bff | 10500 | int depth; |
a3f97cbb JW |
10501 | { |
10502 | register int must_output_die = 0; | |
10503 | register tree origin; | |
10504 | register tree decl; | |
10505 | register enum tree_code origin_code; | |
10506 | ||
10507 | /* Ignore blocks never really used to make RTL. */ | |
10508 | ||
1e7f092a JM |
10509 | if (stmt == NULL_TREE || !TREE_USED (stmt) |
10510 | || (!TREE_ASM_WRITTEN (stmt) && !BLOCK_ABSTRACT (stmt))) | |
71dfc51f | 10511 | return; |
a3f97cbb JW |
10512 | |
10513 | /* Determine the "ultimate origin" of this block. This block may be an | |
10514 | inlined instance of an inlined instance of inline function, so we have | |
10515 | to trace all of the way back through the origin chain to find out what | |
10516 | sort of node actually served as the original seed for the creation of | |
10517 | the current block. */ | |
10518 | origin = block_ultimate_origin (stmt); | |
10519 | origin_code = (origin != NULL) ? TREE_CODE (origin) : ERROR_MARK; | |
10520 | ||
10521 | /* Determine if we need to output any Dwarf DIEs at all to represent this | |
10522 | block. */ | |
10523 | if (origin_code == FUNCTION_DECL) | |
71dfc51f RK |
10524 | /* The outer scopes for inlinings *must* always be represented. We |
10525 | generate DW_TAG_inlined_subroutine DIEs for them. (See below.) */ | |
10526 | must_output_die = 1; | |
a3f97cbb JW |
10527 | else |
10528 | { | |
10529 | /* In the case where the current block represents an inlining of the | |
556273e0 | 10530 | "body block" of an inline function, we must *NOT* output any DIE for |
a3f97cbb JW |
10531 | this block because we have already output a DIE to represent the |
10532 | whole inlined function scope and the "body block" of any function | |
10533 | doesn't really represent a different scope according to ANSI C | |
10534 | rules. So we check here to make sure that this block does not | |
10535 | represent a "body block inlining" before trying to set the | |
10536 | `must_output_die' flag. */ | |
d7248bff | 10537 | if (! is_body_block (origin ? origin : stmt)) |
a3f97cbb JW |
10538 | { |
10539 | /* Determine if this block directly contains any "significant" | |
10540 | local declarations which we will need to output DIEs for. */ | |
10541 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
71dfc51f RK |
10542 | /* We are not in terse mode so *any* local declaration counts |
10543 | as being a "significant" one. */ | |
10544 | must_output_die = (BLOCK_VARS (stmt) != NULL); | |
a3f97cbb | 10545 | else |
71dfc51f RK |
10546 | /* We are in terse mode, so only local (nested) function |
10547 | definitions count as "significant" local declarations. */ | |
10548 | for (decl = BLOCK_VARS (stmt); | |
10549 | decl != NULL; decl = TREE_CHAIN (decl)) | |
10550 | if (TREE_CODE (decl) == FUNCTION_DECL | |
10551 | && DECL_INITIAL (decl)) | |
a3f97cbb | 10552 | { |
71dfc51f RK |
10553 | must_output_die = 1; |
10554 | break; | |
a3f97cbb | 10555 | } |
a3f97cbb JW |
10556 | } |
10557 | } | |
10558 | ||
10559 | /* It would be a waste of space to generate a Dwarf DW_TAG_lexical_block | |
10560 | DIE for any block which contains no significant local declarations at | |
10561 | all. Rather, in such cases we just call `decls_for_scope' so that any | |
10562 | needed Dwarf info for any sub-blocks will get properly generated. Note | |
10563 | that in terse mode, our definition of what constitutes a "significant" | |
10564 | local declaration gets restricted to include only inlined function | |
10565 | instances and local (nested) function definitions. */ | |
10566 | if (must_output_die) | |
10567 | { | |
10568 | if (origin_code == FUNCTION_DECL) | |
71dfc51f | 10569 | gen_inlined_subroutine_die (stmt, context_die, depth); |
a3f97cbb | 10570 | else |
71dfc51f | 10571 | gen_lexical_block_die (stmt, context_die, depth); |
a3f97cbb JW |
10572 | } |
10573 | else | |
d7248bff | 10574 | decls_for_scope (stmt, context_die, depth); |
a3f97cbb JW |
10575 | } |
10576 | ||
10577 | /* Generate all of the decls declared within a given scope and (recursively) | |
9ec36da5 | 10578 | all of its sub-blocks. */ |
71dfc51f | 10579 | |
a3f97cbb | 10580 | static void |
d7248bff | 10581 | decls_for_scope (stmt, context_die, depth) |
a3f97cbb JW |
10582 | register tree stmt; |
10583 | register dw_die_ref context_die; | |
d7248bff | 10584 | int depth; |
a3f97cbb JW |
10585 | { |
10586 | register tree decl; | |
10587 | register tree subblocks; | |
71dfc51f | 10588 | |
a3f97cbb | 10589 | /* Ignore blocks never really used to make RTL. */ |
71dfc51f RK |
10590 | if (stmt == NULL_TREE || ! TREE_USED (stmt)) |
10591 | return; | |
10592 | ||
88dad228 JM |
10593 | /* Output the DIEs to represent all of the data objects and typedefs |
10594 | declared directly within this block but not within any nested | |
10595 | sub-blocks. Also, nested function and tag DIEs have been | |
10596 | generated with a parent of NULL; fix that up now. */ | |
a3f97cbb JW |
10597 | for (decl = BLOCK_VARS (stmt); |
10598 | decl != NULL; decl = TREE_CHAIN (decl)) | |
10599 | { | |
a94dbf2c JM |
10600 | register dw_die_ref die; |
10601 | ||
88dad228 | 10602 | if (TREE_CODE (decl) == FUNCTION_DECL) |
a94dbf2c | 10603 | die = lookup_decl_die (decl); |
88dad228 | 10604 | else if (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl)) |
a94dbf2c JM |
10605 | die = lookup_type_die (TREE_TYPE (decl)); |
10606 | else | |
10607 | die = NULL; | |
10608 | ||
71dfc51f | 10609 | if (die != NULL && die->die_parent == NULL) |
ef76d03b | 10610 | add_child_die (context_die, die); |
88dad228 JM |
10611 | else |
10612 | gen_decl_die (decl, context_die); | |
a3f97cbb JW |
10613 | } |
10614 | ||
10615 | /* Output the DIEs to represent all sub-blocks (and the items declared | |
10616 | therein) of this block. */ | |
10617 | for (subblocks = BLOCK_SUBBLOCKS (stmt); | |
10618 | subblocks != NULL; | |
10619 | subblocks = BLOCK_CHAIN (subblocks)) | |
71dfc51f | 10620 | gen_block_die (subblocks, context_die, depth + 1); |
a3f97cbb JW |
10621 | } |
10622 | ||
a94dbf2c | 10623 | /* Is this a typedef we can avoid emitting? */ |
71dfc51f RK |
10624 | |
10625 | static inline int | |
a94dbf2c JM |
10626 | is_redundant_typedef (decl) |
10627 | register tree decl; | |
10628 | { | |
10629 | if (TYPE_DECL_IS_STUB (decl)) | |
10630 | return 1; | |
71dfc51f | 10631 | |
a94dbf2c JM |
10632 | if (DECL_ARTIFICIAL (decl) |
10633 | && DECL_CONTEXT (decl) | |
10634 | && is_tagged_type (DECL_CONTEXT (decl)) | |
10635 | && TREE_CODE (TYPE_NAME (DECL_CONTEXT (decl))) == TYPE_DECL | |
10636 | && DECL_NAME (decl) == DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))) | |
10637 | /* Also ignore the artificial member typedef for the class name. */ | |
10638 | return 1; | |
71dfc51f | 10639 | |
a94dbf2c JM |
10640 | return 0; |
10641 | } | |
10642 | ||
a3f97cbb | 10643 | /* Generate Dwarf debug information for a decl described by DECL. */ |
71dfc51f | 10644 | |
a3f97cbb JW |
10645 | static void |
10646 | gen_decl_die (decl, context_die) | |
10647 | register tree decl; | |
10648 | register dw_die_ref context_die; | |
10649 | { | |
10650 | register tree origin; | |
71dfc51f | 10651 | |
a3f97cbb | 10652 | if (TREE_CODE (decl) == ERROR_MARK) |
71dfc51f | 10653 | return; |
a3f97cbb | 10654 | |
fcd7f76b JM |
10655 | /* If this ..._DECL node is marked to be ignored, then ignore it. */ |
10656 | if (DECL_IGNORED_P (decl)) | |
71dfc51f | 10657 | return; |
a3f97cbb | 10658 | |
a3f97cbb JW |
10659 | switch (TREE_CODE (decl)) |
10660 | { | |
10661 | case CONST_DECL: | |
556273e0 | 10662 | /* The individual enumerators of an enum type get output when we output |
a3f97cbb JW |
10663 | the Dwarf representation of the relevant enum type itself. */ |
10664 | break; | |
10665 | ||
10666 | case FUNCTION_DECL: | |
4edb7b60 JM |
10667 | /* Don't output any DIEs to represent mere function declarations, |
10668 | unless they are class members or explicit block externs. */ | |
10669 | if (DECL_INITIAL (decl) == NULL_TREE && DECL_CONTEXT (decl) == NULL_TREE | |
777ad4c2 | 10670 | && (current_function_decl == NULL_TREE || DECL_ARTIFICIAL (decl))) |
71dfc51f | 10671 | break; |
bdb669cb | 10672 | |
1cfdcc15 JM |
10673 | /* If we're emitting an out-of-line copy of an inline function, |
10674 | emit info for the abstract instance and set up to refer to it. */ | |
10675 | if (DECL_INLINE (decl) && ! DECL_ABSTRACT (decl) | |
fb41a106 JW |
10676 | && ! class_scope_p (context_die) |
10677 | /* gen_abstract_function won't emit a die if this is just a | |
10678 | declaration. We must avoid setting DECL_ABSTRACT_ORIGIN in | |
10679 | that case, because that works only if we have a die. */ | |
10680 | && DECL_INITIAL (decl) != NULL_TREE) | |
1cfdcc15 JM |
10681 | { |
10682 | gen_abstract_function (decl); | |
10683 | set_decl_origin_self (decl); | |
10684 | } | |
10a11b75 | 10685 | |
4927276d | 10686 | if (debug_info_level > DINFO_LEVEL_TERSE) |
a94dbf2c JM |
10687 | { |
10688 | /* Before we describe the FUNCTION_DECL itself, make sure that we | |
10689 | have described its return type. */ | |
10690 | gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die); | |
10691 | ||
2081603c JM |
10692 | /* And its virtual context. */ |
10693 | if (DECL_VINDEX (decl) != NULL_TREE) | |
10694 | gen_type_die (DECL_CONTEXT (decl), context_die); | |
10695 | ||
a94dbf2c JM |
10696 | /* And its containing type. */ |
10697 | origin = decl_class_context (decl); | |
71dfc51f | 10698 | if (origin != NULL_TREE) |
10a11b75 | 10699 | gen_type_die_for_member (origin, decl, context_die); |
a94dbf2c | 10700 | } |
a3f97cbb JW |
10701 | |
10702 | /* Now output a DIE to represent the function itself. */ | |
10703 | gen_subprogram_die (decl, context_die); | |
10704 | break; | |
10705 | ||
10706 | case TYPE_DECL: | |
10707 | /* If we are in terse mode, don't generate any DIEs to represent any | |
4927276d | 10708 | actual typedefs. */ |
a3f97cbb | 10709 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 10710 | break; |
a3f97cbb | 10711 | |
556273e0 | 10712 | /* In the special case of a TYPE_DECL node representing the |
5c90448c | 10713 | declaration of some type tag, if the given TYPE_DECL is marked as |
a3f97cbb JW |
10714 | having been instantiated from some other (original) TYPE_DECL node |
10715 | (e.g. one which was generated within the original definition of an | |
10716 | inline function) we have to generate a special (abbreviated) | |
556273e0 | 10717 | DW_TAG_structure_type, DW_TAG_union_type, or DW_TAG_enumeration_type |
a3f97cbb | 10718 | DIE here. */ |
2081603c | 10719 | if (TYPE_DECL_IS_STUB (decl) && decl_ultimate_origin (decl) != NULL_TREE) |
a3f97cbb JW |
10720 | { |
10721 | gen_tagged_type_instantiation_die (TREE_TYPE (decl), context_die); | |
10722 | break; | |
10723 | } | |
a3f97cbb | 10724 | |
a94dbf2c JM |
10725 | if (is_redundant_typedef (decl)) |
10726 | gen_type_die (TREE_TYPE (decl), context_die); | |
10727 | else | |
71dfc51f RK |
10728 | /* Output a DIE to represent the typedef itself. */ |
10729 | gen_typedef_die (decl, context_die); | |
a3f97cbb JW |
10730 | break; |
10731 | ||
10732 | case LABEL_DECL: | |
10733 | if (debug_info_level >= DINFO_LEVEL_NORMAL) | |
71dfc51f | 10734 | gen_label_die (decl, context_die); |
a3f97cbb JW |
10735 | break; |
10736 | ||
10737 | case VAR_DECL: | |
10738 | /* If we are in terse mode, don't generate any DIEs to represent any | |
10739 | variable declarations or definitions. */ | |
10740 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 10741 | break; |
a3f97cbb JW |
10742 | |
10743 | /* Output any DIEs that are needed to specify the type of this data | |
10744 | object. */ | |
10745 | gen_type_die (TREE_TYPE (decl), context_die); | |
10746 | ||
a94dbf2c JM |
10747 | /* And its containing type. */ |
10748 | origin = decl_class_context (decl); | |
71dfc51f | 10749 | if (origin != NULL_TREE) |
10a11b75 | 10750 | gen_type_die_for_member (origin, decl, context_die); |
a94dbf2c | 10751 | |
a3f97cbb JW |
10752 | /* Now output the DIE to represent the data object itself. This gets |
10753 | complicated because of the possibility that the VAR_DECL really | |
10754 | represents an inlined instance of a formal parameter for an inline | |
10755 | function. */ | |
10756 | origin = decl_ultimate_origin (decl); | |
71dfc51f RK |
10757 | if (origin != NULL_TREE && TREE_CODE (origin) == PARM_DECL) |
10758 | gen_formal_parameter_die (decl, context_die); | |
a3f97cbb | 10759 | else |
71dfc51f | 10760 | gen_variable_die (decl, context_die); |
a3f97cbb JW |
10761 | break; |
10762 | ||
10763 | case FIELD_DECL: | |
a94dbf2c JM |
10764 | /* Ignore the nameless fields that are used to skip bits, but |
10765 | handle C++ anonymous unions. */ | |
71dfc51f RK |
10766 | if (DECL_NAME (decl) != NULL_TREE |
10767 | || TREE_CODE (TREE_TYPE (decl)) == UNION_TYPE) | |
a3f97cbb JW |
10768 | { |
10769 | gen_type_die (member_declared_type (decl), context_die); | |
10770 | gen_field_die (decl, context_die); | |
10771 | } | |
10772 | break; | |
10773 | ||
10774 | case PARM_DECL: | |
10775 | gen_type_die (TREE_TYPE (decl), context_die); | |
10776 | gen_formal_parameter_die (decl, context_die); | |
10777 | break; | |
10778 | ||
348bb3c7 JM |
10779 | case NAMESPACE_DECL: |
10780 | /* Ignore for now. */ | |
10781 | break; | |
10782 | ||
a3f97cbb JW |
10783 | default: |
10784 | abort (); | |
10785 | } | |
a3f97cbb JW |
10786 | } |
10787 | \f | |
14a774a9 RK |
10788 | /* Add Ada "use" clause information for SGI Workshop debugger. */ |
10789 | ||
10790 | void | |
10791 | dwarf2out_add_library_unit_info (filename, context_list) | |
c6991660 KG |
10792 | const char *filename; |
10793 | const char *context_list; | |
14a774a9 RK |
10794 | { |
10795 | unsigned int file_index; | |
10796 | ||
10797 | if (filename != NULL) | |
10798 | { | |
10799 | dw_die_ref unit_die = new_die (DW_TAG_module, comp_unit_die); | |
556273e0 | 10800 | tree context_list_decl |
14a774a9 RK |
10801 | = build_decl (LABEL_DECL, get_identifier (context_list), |
10802 | void_type_node); | |
10803 | ||
10804 | TREE_PUBLIC (context_list_decl) = TRUE; | |
10805 | add_name_attribute (unit_die, context_list); | |
10806 | file_index = lookup_filename (filename); | |
10807 | add_AT_unsigned (unit_die, DW_AT_decl_file, file_index); | |
10808 | add_pubname (context_list_decl, unit_die); | |
10809 | } | |
10810 | } | |
10811 | ||
71dfc51f RK |
10812 | /* Write the debugging output for DECL. */ |
10813 | ||
a3f97cbb | 10814 | void |
88dad228 | 10815 | dwarf2out_decl (decl) |
a3f97cbb | 10816 | register tree decl; |
a3f97cbb | 10817 | { |
88dad228 JM |
10818 | register dw_die_ref context_die = comp_unit_die; |
10819 | ||
a3f97cbb | 10820 | if (TREE_CODE (decl) == ERROR_MARK) |
71dfc51f | 10821 | return; |
a3f97cbb | 10822 | |
fcd7f76b | 10823 | /* If this ..._DECL node is marked to be ignored, then ignore it. */ |
a3f97cbb | 10824 | if (DECL_IGNORED_P (decl)) |
fcd7f76b | 10825 | return; |
a3f97cbb JW |
10826 | |
10827 | switch (TREE_CODE (decl)) | |
10828 | { | |
10829 | case FUNCTION_DECL: | |
556273e0 | 10830 | /* Ignore this FUNCTION_DECL if it refers to a builtin declaration of a |
a3f97cbb JW |
10831 | builtin function. Explicit programmer-supplied declarations of |
10832 | these same functions should NOT be ignored however. */ | |
9765e357 | 10833 | if (DECL_EXTERNAL (decl) && DECL_BUILT_IN (decl)) |
b1ccbc24 | 10834 | return; |
a3f97cbb JW |
10835 | |
10836 | /* What we would really like to do here is to filter out all mere | |
10837 | file-scope declarations of file-scope functions which are never | |
10838 | referenced later within this translation unit (and keep all of ones | |
556273e0 KH |
10839 | that *are* referenced later on) but we aren't clairvoyant, so we have |
10840 | no idea which functions will be referenced in the future (i.e. later | |
a3f97cbb | 10841 | on within the current translation unit). So here we just ignore all |
556273e0 | 10842 | file-scope function declarations which are not also definitions. If |
956d6950 | 10843 | and when the debugger needs to know something about these functions, |
556273e0 | 10844 | it will have to hunt around and find the DWARF information associated |
bbc6ae08 | 10845 | with the definition of the function. Note that we can't just check |
a3f97cbb JW |
10846 | `DECL_EXTERNAL' to find out which FUNCTION_DECL nodes represent |
10847 | definitions and which ones represent mere declarations. We have to | |
10848 | check `DECL_INITIAL' instead. That's because the C front-end | |
10849 | supports some weird semantics for "extern inline" function | |
10850 | definitions. These can get inlined within the current translation | |
10851 | unit (an thus, we need to generate DWARF info for their abstract | |
10852 | instances so that the DWARF info for the concrete inlined instances | |
556273e0 | 10853 | can have something to refer to) but the compiler never generates any |
a3f97cbb JW |
10854 | out-of-lines instances of such things (despite the fact that they |
10855 | *are* definitions). The important point is that the C front-end | |
10856 | marks these "extern inline" functions as DECL_EXTERNAL, but we need | |
273dbe67 | 10857 | to generate DWARF for them anyway. Note that the C++ front-end also |
a3f97cbb | 10858 | plays some similar games for inline function definitions appearing |
556273e0 | 10859 | within include files which also contain |
a3f97cbb JW |
10860 | `#pragma interface' pragmas. */ |
10861 | if (DECL_INITIAL (decl) == NULL_TREE) | |
b1ccbc24 | 10862 | return; |
88dad228 | 10863 | |
9c6cd30e JM |
10864 | /* If we're a nested function, initially use a parent of NULL; if we're |
10865 | a plain function, this will be fixed up in decls_for_scope. If | |
10866 | we're a method, it will be ignored, since we already have a DIE. */ | |
88dad228 | 10867 | if (decl_function_context (decl)) |
9c6cd30e | 10868 | context_die = NULL; |
88dad228 | 10869 | |
a3f97cbb JW |
10870 | break; |
10871 | ||
10872 | case VAR_DECL: | |
556273e0 | 10873 | /* Ignore this VAR_DECL if it refers to a file-scope extern data object |
a3f97cbb JW |
10874 | declaration and if the declaration was never even referenced from |
10875 | within this entire compilation unit. We suppress these DIEs in | |
10876 | order to save space in the .debug section (by eliminating entries | |
10877 | which are probably useless). Note that we must not suppress | |
10878 | block-local extern declarations (whether used or not) because that | |
10879 | would screw-up the debugger's name lookup mechanism and cause it to | |
10880 | miss things which really ought to be in scope at a given point. */ | |
10881 | if (DECL_EXTERNAL (decl) && !TREE_USED (decl)) | |
71dfc51f | 10882 | return; |
a3f97cbb JW |
10883 | |
10884 | /* If we are in terse mode, don't generate any DIEs to represent any | |
10885 | variable declarations or definitions. */ | |
10886 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 10887 | return; |
a3f97cbb JW |
10888 | break; |
10889 | ||
10890 | case TYPE_DECL: | |
57fb7689 JM |
10891 | /* Don't emit stubs for types unless they are needed by other DIEs. */ |
10892 | if (TYPE_DECL_SUPPRESS_DEBUG (decl)) | |
10893 | return; | |
10894 | ||
a3f97cbb | 10895 | /* Don't bother trying to generate any DIEs to represent any of the |
a9d38797 JM |
10896 | normal built-in types for the language we are compiling. */ |
10897 | if (DECL_SOURCE_LINE (decl) == 0) | |
a94dbf2c JM |
10898 | { |
10899 | /* OK, we need to generate one for `bool' so GDB knows what type | |
10900 | comparisons have. */ | |
10901 | if ((get_AT_unsigned (comp_unit_die, DW_AT_language) | |
10902 | == DW_LANG_C_plus_plus) | |
10903 | && TREE_CODE (TREE_TYPE (decl)) == BOOLEAN_TYPE) | |
10904 | modified_type_die (TREE_TYPE (decl), 0, 0, NULL); | |
71dfc51f | 10905 | |
a94dbf2c JM |
10906 | return; |
10907 | } | |
a3f97cbb | 10908 | |
88dad228 | 10909 | /* If we are in terse mode, don't generate any DIEs for types. */ |
a3f97cbb | 10910 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 10911 | return; |
88dad228 JM |
10912 | |
10913 | /* If we're a function-scope tag, initially use a parent of NULL; | |
10914 | this will be fixed up in decls_for_scope. */ | |
10915 | if (decl_function_context (decl)) | |
3f76745e | 10916 | context_die = NULL; |
88dad228 | 10917 | |
a3f97cbb JW |
10918 | break; |
10919 | ||
10920 | default: | |
10921 | return; | |
10922 | } | |
10923 | ||
88dad228 | 10924 | gen_decl_die (decl, context_die); |
a3f97cbb JW |
10925 | } |
10926 | ||
10927 | /* Output a marker (i.e. a label) for the beginning of the generated code for | |
10928 | a lexical block. */ | |
71dfc51f | 10929 | |
a3f97cbb | 10930 | void |
9a666dda | 10931 | dwarf2out_begin_block (blocknum) |
a3f97cbb JW |
10932 | register unsigned blocknum; |
10933 | { | |
a3f97cbb | 10934 | function_section (current_function_decl); |
8215347e | 10935 | ASM_OUTPUT_DEBUG_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum); |
a3f97cbb JW |
10936 | } |
10937 | ||
10938 | /* Output a marker (i.e. a label) for the end of the generated code for a | |
10939 | lexical block. */ | |
71dfc51f | 10940 | |
a3f97cbb | 10941 | void |
9a666dda | 10942 | dwarf2out_end_block (blocknum) |
a3f97cbb JW |
10943 | register unsigned blocknum; |
10944 | { | |
a3f97cbb | 10945 | function_section (current_function_decl); |
8215347e | 10946 | ASM_OUTPUT_DEBUG_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum); |
a3f97cbb JW |
10947 | } |
10948 | ||
64b59a80 JM |
10949 | /* Returns nonzero if it is appropriate not to emit any debugging |
10950 | information for BLOCK, because it doesn't contain any instructions. | |
fcd7f76b | 10951 | |
64b59a80 JM |
10952 | Don't allow this for blocks with nested functions or local classes |
10953 | as we would end up with orphans, and in the presence of scheduling | |
10954 | we may end up calling them anyway. */ | |
10955 | ||
10956 | int | |
fcd7f76b JM |
10957 | dwarf2out_ignore_block (block) |
10958 | tree block; | |
10959 | { | |
10960 | tree decl; | |
10961 | for (decl = BLOCK_VARS (block); decl; decl = TREE_CHAIN (decl)) | |
64b59a80 JM |
10962 | if (TREE_CODE (decl) == FUNCTION_DECL |
10963 | || (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl))) | |
10964 | return 0; | |
10965 | return 1; | |
fcd7f76b JM |
10966 | } |
10967 | ||
a3f97cbb | 10968 | /* Lookup a filename (in the list of filenames that we know about here in |
9a666dda | 10969 | dwarf2out.c) and return its "index". The index of each (known) filename is |
a3f97cbb JW |
10970 | just a unique number which is associated with only that one filename. |
10971 | We need such numbers for the sake of generating labels | |
10972 | (in the .debug_sfnames section) and references to those | |
10973 | files numbers (in the .debug_srcinfo and.debug_macinfo sections). | |
10974 | If the filename given as an argument is not found in our current list, | |
10975 | add it to the list and assign it the next available unique index number. | |
10976 | In order to speed up searches, we remember the index of the filename | |
10977 | was looked up last. This handles the majority of all searches. */ | |
71dfc51f | 10978 | |
a3f97cbb JW |
10979 | static unsigned |
10980 | lookup_filename (file_name) | |
d560ee52 | 10981 | const char *file_name; |
a3f97cbb JW |
10982 | { |
10983 | static unsigned last_file_lookup_index = 0; | |
a3f97cbb JW |
10984 | register unsigned i; |
10985 | ||
10986 | /* Check to see if the file name that was searched on the previous call | |
10987 | matches this file name. If so, return the index. */ | |
10988 | if (last_file_lookup_index != 0) | |
71dfc51f RK |
10989 | if (strcmp (file_name, file_table[last_file_lookup_index]) == 0) |
10990 | return last_file_lookup_index; | |
a3f97cbb JW |
10991 | |
10992 | /* Didn't match the previous lookup, search the table */ | |
10993 | for (i = 1; i < file_table_in_use; ++i) | |
71dfc51f RK |
10994 | if (strcmp (file_name, file_table[i]) == 0) |
10995 | { | |
10996 | last_file_lookup_index = i; | |
10997 | return i; | |
10998 | } | |
a3f97cbb | 10999 | |
556273e0 | 11000 | /* Prepare to add a new table entry by making sure there is enough space in |
a3f97cbb JW |
11001 | the table to do so. If not, expand the current table. */ |
11002 | if (file_table_in_use == file_table_allocated) | |
11003 | { | |
11004 | file_table_allocated += FILE_TABLE_INCREMENT; | |
11005 | file_table | |
71dfc51f RK |
11006 | = (char **) xrealloc (file_table, |
11007 | file_table_allocated * sizeof (char *)); | |
a3f97cbb JW |
11008 | } |
11009 | ||
71dfc51f | 11010 | /* Add the new entry to the end of the filename table. */ |
a3f97cbb JW |
11011 | file_table[file_table_in_use] = xstrdup (file_name); |
11012 | last_file_lookup_index = file_table_in_use++; | |
71dfc51f | 11013 | |
a3f97cbb JW |
11014 | return last_file_lookup_index; |
11015 | } | |
11016 | ||
11017 | /* Output a label to mark the beginning of a source code line entry | |
11018 | and record information relating to this source line, in | |
11019 | 'line_info_table' for later output of the .debug_line section. */ | |
71dfc51f | 11020 | |
a3f97cbb | 11021 | void |
9a666dda | 11022 | dwarf2out_line (filename, line) |
d560ee52 | 11023 | register const char *filename; |
a3f97cbb JW |
11024 | register unsigned line; |
11025 | { | |
a3f97cbb JW |
11026 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
11027 | { | |
11028 | function_section (current_function_decl); | |
a3f97cbb | 11029 | |
b2244e22 JW |
11030 | if (DWARF2_ASM_LINE_DEBUG_INFO) |
11031 | { | |
e2bef702 | 11032 | static const char *lastfile; |
b2244e22 JW |
11033 | |
11034 | /* Emit the .file and .loc directives understood by GNU as. */ | |
11035 | if (lastfile == 0 || strcmp (filename, lastfile)) | |
11036 | { | |
11037 | fprintf (asm_out_file, "\t.file 0 \"%s\"\n", filename); | |
11038 | lastfile = filename; | |
11039 | } | |
11040 | ||
11041 | fprintf (asm_out_file, "\t.loc 0 %d 0\n", line); | |
11042 | ||
11043 | /* Indicate that line number info exists. */ | |
11044 | ++line_info_table_in_use; | |
11045 | ||
11046 | /* Indicate that multiple line number tables exist. */ | |
11047 | if (DECL_SECTION_NAME (current_function_decl)) | |
11048 | ++separate_line_info_table_in_use; | |
11049 | } | |
11050 | else if (DECL_SECTION_NAME (current_function_decl)) | |
a3f97cbb | 11051 | { |
e90b62db | 11052 | register dw_separate_line_info_ref line_info; |
5c90448c JM |
11053 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, SEPARATE_LINE_CODE_LABEL, |
11054 | separate_line_info_table_in_use); | |
ac260b05 JM |
11055 | if (flag_debug_asm) |
11056 | fprintf (asm_out_file, "\t%s line %d", ASM_COMMENT_START, line); | |
e90b62db JM |
11057 | fputc ('\n', asm_out_file); |
11058 | ||
11059 | /* expand the line info table if necessary */ | |
11060 | if (separate_line_info_table_in_use | |
11061 | == separate_line_info_table_allocated) | |
11062 | { | |
11063 | separate_line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
11064 | separate_line_info_table | |
71dfc51f RK |
11065 | = (dw_separate_line_info_ref) |
11066 | xrealloc (separate_line_info_table, | |
11067 | separate_line_info_table_allocated | |
11068 | * sizeof (dw_separate_line_info_entry)); | |
e90b62db | 11069 | } |
71dfc51f RK |
11070 | |
11071 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
11072 | line_info |
11073 | = &separate_line_info_table[separate_line_info_table_in_use++]; | |
11074 | line_info->dw_file_num = lookup_filename (filename); | |
11075 | line_info->dw_line_num = line; | |
11076 | line_info->function = current_funcdef_number; | |
11077 | } | |
11078 | else | |
11079 | { | |
11080 | register dw_line_info_ref line_info; | |
71dfc51f | 11081 | |
5c90448c JM |
11082 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, LINE_CODE_LABEL, |
11083 | line_info_table_in_use); | |
ac260b05 JM |
11084 | if (flag_debug_asm) |
11085 | fprintf (asm_out_file, "\t%s line %d", ASM_COMMENT_START, line); | |
e90b62db JM |
11086 | fputc ('\n', asm_out_file); |
11087 | ||
71dfc51f | 11088 | /* Expand the line info table if necessary. */ |
e90b62db JM |
11089 | if (line_info_table_in_use == line_info_table_allocated) |
11090 | { | |
11091 | line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
11092 | line_info_table | |
71dfc51f RK |
11093 | = (dw_line_info_ref) |
11094 | xrealloc (line_info_table, | |
11095 | (line_info_table_allocated | |
11096 | * sizeof (dw_line_info_entry))); | |
e90b62db | 11097 | } |
71dfc51f RK |
11098 | |
11099 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
11100 | line_info = &line_info_table[line_info_table_in_use++]; |
11101 | line_info->dw_file_num = lookup_filename (filename); | |
11102 | line_info->dw_line_num = line; | |
a3f97cbb | 11103 | } |
a3f97cbb JW |
11104 | } |
11105 | } | |
11106 | ||
11107 | /* Record the beginning of a new source file, for later output | |
11108 | of the .debug_macinfo section. At present, unimplemented. */ | |
71dfc51f | 11109 | |
a3f97cbb | 11110 | void |
9a666dda | 11111 | dwarf2out_start_source_file (filename) |
d560ee52 | 11112 | register const char *filename ATTRIBUTE_UNUSED; |
a3f97cbb | 11113 | { |
881c6935 JM |
11114 | if (flag_eliminate_dwarf2_dups) |
11115 | { | |
11116 | /* Record the beginning of the file for break_out_includes. */ | |
11117 | dw_die_ref bincl_die = new_die (DW_TAG_GNU_BINCL, comp_unit_die); | |
11118 | add_AT_string (bincl_die, DW_AT_name, filename); | |
11119 | } | |
a3f97cbb JW |
11120 | } |
11121 | ||
9a666dda | 11122 | /* Record the end of a source file, for later output |
a3f97cbb | 11123 | of the .debug_macinfo section. At present, unimplemented. */ |
71dfc51f | 11124 | |
a3f97cbb | 11125 | void |
9a666dda | 11126 | dwarf2out_end_source_file () |
a3f97cbb | 11127 | { |
881c6935 JM |
11128 | if (flag_eliminate_dwarf2_dups) |
11129 | { | |
11130 | /* Record the end of the file for break_out_includes. */ | |
11131 | new_die (DW_TAG_GNU_EINCL, comp_unit_die); | |
11132 | } | |
a3f97cbb JW |
11133 | } |
11134 | ||
11135 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
11136 | the tail part of the directive line, i.e. the part which is past the | |
11137 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 11138 | |
a3f97cbb | 11139 | void |
9a666dda | 11140 | dwarf2out_define (lineno, buffer) |
2618f955 | 11141 | register unsigned lineno ATTRIBUTE_UNUSED; |
d560ee52 | 11142 | register const char *buffer ATTRIBUTE_UNUSED; |
a3f97cbb JW |
11143 | { |
11144 | static int initialized = 0; | |
11145 | if (!initialized) | |
11146 | { | |
9a666dda | 11147 | dwarf2out_start_source_file (primary_filename); |
a3f97cbb JW |
11148 | initialized = 1; |
11149 | } | |
11150 | } | |
11151 | ||
11152 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
11153 | the tail part of the directive line, i.e. the part which is past the | |
11154 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 11155 | |
a3f97cbb | 11156 | void |
9a666dda | 11157 | dwarf2out_undef (lineno, buffer) |
487a6e06 | 11158 | register unsigned lineno ATTRIBUTE_UNUSED; |
d560ee52 | 11159 | register const char *buffer ATTRIBUTE_UNUSED; |
a3f97cbb JW |
11160 | { |
11161 | } | |
11162 | ||
11163 | /* Set up for Dwarf output at the start of compilation. */ | |
71dfc51f | 11164 | |
a3f97cbb | 11165 | void |
9a666dda | 11166 | dwarf2out_init (asm_out_file, main_input_filename) |
a3f97cbb | 11167 | register FILE *asm_out_file; |
d3e3972c | 11168 | register const char *main_input_filename; |
a3f97cbb | 11169 | { |
a3f97cbb JW |
11170 | /* Remember the name of the primary input file. */ |
11171 | primary_filename = main_input_filename; | |
11172 | ||
11173 | /* Allocate the initial hunk of the file_table. */ | |
3de90026 | 11174 | file_table = (char **) xcalloc (FILE_TABLE_INCREMENT, sizeof (char *)); |
a3f97cbb | 11175 | file_table_allocated = FILE_TABLE_INCREMENT; |
71dfc51f RK |
11176 | |
11177 | /* Skip the first entry - file numbers begin at 1. */ | |
a3f97cbb JW |
11178 | file_table_in_use = 1; |
11179 | ||
a3f97cbb JW |
11180 | /* Allocate the initial hunk of the decl_die_table. */ |
11181 | decl_die_table | |
3de90026 | 11182 | = (dw_die_ref *) xcalloc (DECL_DIE_TABLE_INCREMENT, sizeof (dw_die_ref)); |
a3f97cbb JW |
11183 | decl_die_table_allocated = DECL_DIE_TABLE_INCREMENT; |
11184 | decl_die_table_in_use = 0; | |
11185 | ||
11186 | /* Allocate the initial hunk of the decl_scope_table. */ | |
11187 | decl_scope_table | |
777ad4c2 | 11188 | = (tree *) xcalloc (DECL_SCOPE_TABLE_INCREMENT, sizeof (tree)); |
a3f97cbb JW |
11189 | decl_scope_table_allocated = DECL_SCOPE_TABLE_INCREMENT; |
11190 | decl_scope_depth = 0; | |
11191 | ||
11192 | /* Allocate the initial hunk of the abbrev_die_table. */ | |
11193 | abbrev_die_table | |
3de90026 RH |
11194 | = (dw_die_ref *) xcalloc (ABBREV_DIE_TABLE_INCREMENT, |
11195 | sizeof (dw_die_ref)); | |
a3f97cbb | 11196 | abbrev_die_table_allocated = ABBREV_DIE_TABLE_INCREMENT; |
71dfc51f | 11197 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
11198 | abbrev_die_table_in_use = 1; |
11199 | ||
11200 | /* Allocate the initial hunk of the line_info_table. */ | |
11201 | line_info_table | |
3de90026 RH |
11202 | = (dw_line_info_ref) xcalloc (LINE_INFO_TABLE_INCREMENT, |
11203 | sizeof (dw_line_info_entry)); | |
a3f97cbb | 11204 | line_info_table_allocated = LINE_INFO_TABLE_INCREMENT; |
71dfc51f | 11205 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
11206 | line_info_table_in_use = 1; |
11207 | ||
556273e0 | 11208 | /* Generate the initial DIE for the .debug section. Note that the (string) |
a3f97cbb | 11209 | value given in the DW_AT_name attribute of the DW_TAG_compile_unit DIE |
556273e0 | 11210 | will (typically) be a relative pathname and that this pathname should be |
a3f97cbb JW |
11211 | taken as being relative to the directory from which the compiler was |
11212 | invoked when the given (base) source file was compiled. */ | |
a96c67ec | 11213 | comp_unit_die = gen_compile_unit_die (main_input_filename); |
a3f97cbb | 11214 | |
1f8f4a0b MM |
11215 | VARRAY_RTX_INIT (used_rtx_varray, 32, "used_rtx_varray"); |
11216 | ggc_add_rtx_varray_root (&used_rtx_varray, 1); | |
1865dbb5 | 11217 | |
5c90448c | 11218 | ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0); |
8b790721 | 11219 | ASM_GENERATE_INTERNAL_LABEL (abbrev_section_label, ABBREV_SECTION_LABEL, 0); |
b366352b MM |
11220 | if (DWARF2_GENERATE_TEXT_SECTION_LABEL) |
11221 | ASM_GENERATE_INTERNAL_LABEL (text_section_label, TEXT_SECTION_LABEL, 0); | |
11222 | else | |
11223 | strcpy (text_section_label, stripattributes (TEXT_SECTION)); | |
556273e0 | 11224 | ASM_GENERATE_INTERNAL_LABEL (debug_info_section_label, |
8b790721 | 11225 | DEBUG_INFO_SECTION_LABEL, 0); |
556273e0 | 11226 | ASM_GENERATE_INTERNAL_LABEL (debug_line_section_label, |
8b790721 JM |
11227 | DEBUG_LINE_SECTION_LABEL, 0); |
11228 | ||
11229 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
11230 | ASM_OUTPUT_LABEL (asm_out_file, abbrev_section_label); | |
b366352b | 11231 | if (DWARF2_GENERATE_TEXT_SECTION_LABEL) |
a96c67ec JM |
11232 | { |
11233 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
11234 | ASM_OUTPUT_LABEL (asm_out_file, text_section_label); | |
11235 | } | |
8b790721 JM |
11236 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_INFO_SECTION); |
11237 | ASM_OUTPUT_LABEL (asm_out_file, debug_info_section_label); | |
11238 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION); | |
11239 | ASM_OUTPUT_LABEL (asm_out_file, debug_line_section_label); | |
a3f97cbb JW |
11240 | } |
11241 | ||
11242 | /* Output stuff that dwarf requires at the end of every file, | |
11243 | and generate the DWARF-2 debugging info. */ | |
71dfc51f | 11244 | |
a3f97cbb | 11245 | void |
9a666dda | 11246 | dwarf2out_finish () |
a3f97cbb | 11247 | { |
ef76d03b JW |
11248 | limbo_die_node *node, *next_node; |
11249 | dw_die_ref die; | |
ef76d03b JW |
11250 | |
11251 | /* Traverse the limbo die list, and add parent/child links. The only | |
11252 | dies without parents that should be here are concrete instances of | |
11253 | inline functions, and the comp_unit_die. We can ignore the comp_unit_die. | |
11254 | For concrete instances, we can get the parent die from the abstract | |
11255 | instance. */ | |
11256 | for (node = limbo_die_list; node; node = next_node) | |
11257 | { | |
11258 | next_node = node->next; | |
11259 | die = node->die; | |
11260 | ||
11261 | if (die->die_parent == NULL) | |
11262 | { | |
a96c67ec JM |
11263 | dw_die_ref origin = get_AT_ref (die, DW_AT_abstract_origin); |
11264 | if (origin) | |
11265 | add_child_die (origin->die_parent, die); | |
ef76d03b | 11266 | else if (die == comp_unit_die) |
a96c67ec | 11267 | ; |
ef76d03b JW |
11268 | else |
11269 | abort (); | |
11270 | } | |
11271 | free (node); | |
11272 | } | |
a96c67ec | 11273 | limbo_die_list = NULL; |
ef76d03b | 11274 | |
8a8c3656 JM |
11275 | /* Walk through the list of incomplete types again, trying once more to |
11276 | emit full debugging info for them. */ | |
11277 | retry_incomplete_types (); | |
11278 | ||
881c6935 JM |
11279 | /* We need to reverse all the dies before break_out_includes, or |
11280 | we'll see the end of an include file before the beginning. */ | |
11281 | reverse_all_dies (comp_unit_die); | |
11282 | ||
11283 | /* Generate separate CUs for each of the include files we've seen. | |
11284 | They will go into limbo_die_list. */ | |
5f632b5e JM |
11285 | if (flag_eliminate_dwarf2_dups) |
11286 | break_out_includes (comp_unit_die); | |
881c6935 JM |
11287 | |
11288 | /* Traverse the DIE's and add add sibling attributes to those DIE's | |
11289 | that have children. */ | |
a3f97cbb | 11290 | add_sibling_attributes (comp_unit_die); |
881c6935 JM |
11291 | for (node = limbo_die_list; node; node = node->next) |
11292 | add_sibling_attributes (node->die); | |
a3f97cbb JW |
11293 | |
11294 | /* Output a terminator label for the .text section. */ | |
11295 | fputc ('\n', asm_out_file); | |
11296 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
5c90448c | 11297 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, TEXT_END_LABEL, 0); |
a3f97cbb | 11298 | |
bdb669cb | 11299 | #if 0 |
a3f97cbb JW |
11300 | /* Output a terminator label for the .data section. */ |
11301 | fputc ('\n', asm_out_file); | |
11302 | ASM_OUTPUT_SECTION (asm_out_file, DATA_SECTION); | |
5c90448c | 11303 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, DATA_END_LABEL, 0); |
a3f97cbb JW |
11304 | |
11305 | /* Output a terminator label for the .bss section. */ | |
11306 | fputc ('\n', asm_out_file); | |
11307 | ASM_OUTPUT_SECTION (asm_out_file, BSS_SECTION); | |
5c90448c | 11308 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BSS_END_LABEL, 0); |
bdb669cb | 11309 | #endif |
a3f97cbb | 11310 | |
e90b62db JM |
11311 | /* Output the source line correspondence table. */ |
11312 | if (line_info_table_in_use > 1 || separate_line_info_table_in_use) | |
11313 | { | |
b2244e22 JW |
11314 | if (! DWARF2_ASM_LINE_DEBUG_INFO) |
11315 | { | |
11316 | fputc ('\n', asm_out_file); | |
11317 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION); | |
11318 | output_line_info (); | |
11319 | } | |
e90b62db JM |
11320 | |
11321 | /* We can only use the low/high_pc attributes if all of the code | |
11322 | was in .text. */ | |
11323 | if (separate_line_info_table_in_use == 0) | |
11324 | { | |
8b790721 | 11325 | add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, text_section_label); |
5c90448c | 11326 | add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label); |
e90b62db | 11327 | } |
71dfc51f | 11328 | |
8b790721 JM |
11329 | add_AT_lbl_offset (comp_unit_die, DW_AT_stmt_list, |
11330 | debug_line_section_label); | |
e90b62db JM |
11331 | } |
11332 | ||
a96c67ec JM |
11333 | #if 0 /* unimplemented */ |
11334 | if (debug_info_level >= DINFO_LEVEL_VERBOSE && primary) | |
11335 | add_AT_unsigned (die, DW_AT_macro_info, 0); | |
11336 | #endif | |
11337 | ||
881c6935 JM |
11338 | /* Output all of the compilation units. We put the main one last so that |
11339 | the offsets are available to output_pubnames. */ | |
11340 | for (node = limbo_die_list; node; node = node->next) | |
11341 | output_comp_unit (node->die); | |
11342 | output_comp_unit (comp_unit_die); | |
11343 | ||
a3f97cbb JW |
11344 | /* Output the abbreviation table. */ |
11345 | fputc ('\n', asm_out_file); | |
11346 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
a3f97cbb JW |
11347 | output_abbrev_section (); |
11348 | ||
d291dd49 JM |
11349 | if (pubname_table_in_use) |
11350 | { | |
11351 | /* Output public names table. */ | |
11352 | fputc ('\n', asm_out_file); | |
11353 | ASM_OUTPUT_SECTION (asm_out_file, PUBNAMES_SECTION); | |
11354 | output_pubnames (); | |
11355 | } | |
11356 | ||
e689ae67 JM |
11357 | /* We only put functions in the arange table, so don't write it out if |
11358 | we don't have any. */ | |
a3f97cbb JW |
11359 | if (fde_table_in_use) |
11360 | { | |
a3f97cbb JW |
11361 | /* Output the address range information. */ |
11362 | fputc ('\n', asm_out_file); | |
11363 | ASM_OUTPUT_SECTION (asm_out_file, ARANGES_SECTION); | |
11364 | output_aranges (); | |
11365 | } | |
11366 | } | |
9a666dda | 11367 | #endif /* DWARF2_DEBUGGING_INFO */ |