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a3f97cbb | 1 | /* Output Dwarf2 format symbol table information from the GNU C compiler. |
88ed5bb5 | 2 | Copyright (C) 1992, 93, 95-98, 1999 Free Software Foundation, Inc. |
e9a25f70 JL |
3 | Contributed by Gary Funck (gary@intrepid.com). |
4 | Derived from DWARF 1 implementation of Ron Guilmette (rfg@monkeys.com). | |
469ac993 | 5 | Extensively modified by Jason Merrill (jason@cygnus.com). |
a3f97cbb JW |
6 | |
7 | This file is part of GNU CC. | |
8 | ||
9 | GNU CC is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GNU CC is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GNU CC; see the file COPYING. If not, write to | |
5f38fdda JL |
21 | the Free Software Foundation, 59 Temple Place - Suite 330, |
22 | Boston, MA 02111-1307, USA. */ | |
a3f97cbb | 23 | |
a96c67ec | 24 | /* TODO: Implement .debug_str handling, and share entries somehow. |
348bb3c7 JM |
25 | Eliminate duplicates by putting common info in a separate section |
26 | to be collected by the linker and referring to it with | |
27 | DW_FORM_ref_addr. | |
28 | Emit .debug_line header even when there are no functions, since | |
29 | the file numbers are used by .debug_info. Alternately, leave | |
30 | out locations for types and decls. | |
31 | Avoid talking about ctors and op= for PODs. | |
32 | Factor out common prologue sequences into multiple CIEs. */ | |
33 | ||
3f76745e JM |
34 | /* The first part of this file deals with the DWARF 2 frame unwind |
35 | information, which is also used by the GCC efficient exception handling | |
36 | mechanism. The second part, controlled only by an #ifdef | |
37 | DWARF2_DEBUGGING_INFO, deals with the other DWARF 2 debugging | |
38 | information. */ | |
39 | ||
0021b564 | 40 | #include "config.h" |
670ee920 | 41 | #include "system.h" |
0021b564 | 42 | #include "defaults.h" |
a3f97cbb JW |
43 | #include "tree.h" |
44 | #include "flags.h" | |
45 | #include "rtl.h" | |
46 | #include "hard-reg-set.h" | |
47 | #include "regs.h" | |
48 | #include "insn-config.h" | |
49 | #include "reload.h" | |
50 | #include "output.h" | |
71dfc51f | 51 | #include "expr.h" |
3f76745e | 52 | #include "except.h" |
a7cc7f29 | 53 | #include "dwarf2.h" |
76ead72b | 54 | #include "dwarf2out.h" |
10f0ad3d | 55 | #include "toplev.h" |
b170964a | 56 | #include "dyn-string.h" |
951a525f | 57 | #include "ggc.h" |
a3f97cbb | 58 | |
c85f7c16 JL |
59 | /* We cannot use <assert.h> in GCC source, since that would include |
60 | GCC's assert.h, which may not be compatible with the host compiler. */ | |
61 | #undef assert | |
62 | #ifdef NDEBUG | |
63 | # define assert(e) | |
64 | #else | |
65 | # define assert(e) do { if (! (e)) abort (); } while (0) | |
66 | #endif | |
67 | ||
a96c67ec JM |
68 | #ifndef DIR_SEPARATOR |
69 | #define DIR_SEPARATOR '/' | |
70 | #endif | |
71 | ||
0021b564 JM |
72 | /* Decide whether we want to emit frame unwind information for the current |
73 | translation unit. */ | |
74 | ||
75 | int | |
76 | dwarf2out_do_frame () | |
77 | { | |
78 | return (write_symbols == DWARF2_DEBUG | |
9ec36da5 JL |
79 | #ifdef DWARF2_FRAME_INFO |
80 | || DWARF2_FRAME_INFO | |
81 | #endif | |
0021b564 | 82 | #ifdef DWARF2_UNWIND_INFO |
14a774a9 | 83 | || flag_unwind_tables |
0021b564 JM |
84 | || (flag_exceptions && ! exceptions_via_longjmp) |
85 | #endif | |
86 | ); | |
87 | } | |
88 | ||
89 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) | |
90 | ||
eaf95893 RK |
91 | /* How to start an assembler comment. */ |
92 | #ifndef ASM_COMMENT_START | |
93 | #define ASM_COMMENT_START ";#" | |
94 | #endif | |
95 | ||
a3f97cbb JW |
96 | typedef struct dw_cfi_struct *dw_cfi_ref; |
97 | typedef struct dw_fde_struct *dw_fde_ref; | |
98 | typedef union dw_cfi_oprnd_struct *dw_cfi_oprnd_ref; | |
a3f97cbb JW |
99 | |
100 | /* Call frames are described using a sequence of Call Frame | |
101 | Information instructions. The register number, offset | |
102 | and address fields are provided as possible operands; | |
103 | their use is selected by the opcode field. */ | |
71dfc51f | 104 | |
a3f97cbb | 105 | typedef union dw_cfi_oprnd_struct |
71dfc51f RK |
106 | { |
107 | unsigned long dw_cfi_reg_num; | |
108 | long int dw_cfi_offset; | |
109 | char *dw_cfi_addr; | |
110 | } | |
a3f97cbb JW |
111 | dw_cfi_oprnd; |
112 | ||
113 | typedef struct dw_cfi_struct | |
71dfc51f RK |
114 | { |
115 | dw_cfi_ref dw_cfi_next; | |
116 | enum dwarf_call_frame_info dw_cfi_opc; | |
117 | dw_cfi_oprnd dw_cfi_oprnd1; | |
118 | dw_cfi_oprnd dw_cfi_oprnd2; | |
119 | } | |
a3f97cbb JW |
120 | dw_cfi_node; |
121 | ||
122 | /* All call frame descriptions (FDE's) in the GCC generated DWARF | |
4b674448 | 123 | refer to a single Common Information Entry (CIE), defined at |
a3f97cbb JW |
124 | the beginning of the .debug_frame section. This used of a single |
125 | CIE obviates the need to keep track of multiple CIE's | |
126 | in the DWARF generation routines below. */ | |
71dfc51f | 127 | |
a3f97cbb | 128 | typedef struct dw_fde_struct |
71dfc51f | 129 | { |
71dfc51f RK |
130 | char *dw_fde_begin; |
131 | char *dw_fde_current_label; | |
132 | char *dw_fde_end; | |
133 | dw_cfi_ref dw_fde_cfi; | |
134 | } | |
a3f97cbb JW |
135 | dw_fde_node; |
136 | ||
a3f97cbb JW |
137 | /* Maximum size (in bytes) of an artificially generated label. */ |
138 | #define MAX_ARTIFICIAL_LABEL_BYTES 30 | |
139 | ||
140 | /* Make sure we know the sizes of the various types dwarf can describe. These | |
141 | are only defaults. If the sizes are different for your target, you should | |
142 | override these values by defining the appropriate symbols in your tm.h | |
143 | file. */ | |
71dfc51f | 144 | |
a3f97cbb JW |
145 | #ifndef CHAR_TYPE_SIZE |
146 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
147 | #endif | |
a3f97cbb | 148 | #ifndef PTR_SIZE |
a9d38797 | 149 | #define PTR_SIZE (POINTER_SIZE / BITS_PER_UNIT) |
a3f97cbb JW |
150 | #endif |
151 | ||
7e23cb16 JM |
152 | /* The size in bytes of a DWARF field indicating an offset or length |
153 | relative to a debug info section, specified to be 4 bytes in the DWARF-2 | |
154 | specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */ | |
71dfc51f | 155 | |
7e23cb16 JM |
156 | #ifndef DWARF_OFFSET_SIZE |
157 | #define DWARF_OFFSET_SIZE 4 | |
158 | #endif | |
159 | ||
9a666dda JM |
160 | #define DWARF_VERSION 2 |
161 | ||
7e23cb16 JM |
162 | /* Round SIZE up to the nearest BOUNDARY. */ |
163 | #define DWARF_ROUND(SIZE,BOUNDARY) \ | |
164 | (((SIZE) + (BOUNDARY) - 1) & ~((BOUNDARY) - 1)) | |
a3f97cbb | 165 | |
a3f97cbb | 166 | /* Offsets recorded in opcodes are a multiple of this alignment factor. */ |
469ac993 JM |
167 | #ifdef STACK_GROWS_DOWNWARD |
168 | #define DWARF_CIE_DATA_ALIGNMENT (-UNITS_PER_WORD) | |
169 | #else | |
170 | #define DWARF_CIE_DATA_ALIGNMENT UNITS_PER_WORD | |
171 | #endif | |
a3f97cbb | 172 | |
3f76745e JM |
173 | /* A pointer to the base of a table that contains frame description |
174 | information for each routine. */ | |
175 | static dw_fde_ref fde_table; | |
a3f97cbb | 176 | |
3f76745e JM |
177 | /* Number of elements currently allocated for fde_table. */ |
178 | static unsigned fde_table_allocated; | |
a94dbf2c | 179 | |
3f76745e JM |
180 | /* Number of elements in fde_table currently in use. */ |
181 | static unsigned fde_table_in_use; | |
a3f97cbb | 182 | |
3f76745e JM |
183 | /* Size (in elements) of increments by which we may expand the |
184 | fde_table. */ | |
185 | #define FDE_TABLE_INCREMENT 256 | |
a3f97cbb | 186 | |
a94dbf2c JM |
187 | /* A list of call frame insns for the CIE. */ |
188 | static dw_cfi_ref cie_cfi_head; | |
189 | ||
a3f97cbb JW |
190 | /* The number of the current function definition for which debugging |
191 | information is being generated. These numbers range from 1 up to the | |
192 | maximum number of function definitions contained within the current | |
193 | compilation unit. These numbers are used to create unique label id's | |
194 | unique to each function definition. */ | |
4f988ea2 | 195 | static unsigned current_funcdef_number = 0; |
a3f97cbb JW |
196 | |
197 | /* Some DWARF extensions (e.g., MIPS/SGI) implement a subprogram | |
198 | attribute that accelerates the lookup of the FDE associated | |
199 | with the subprogram. This variable holds the table index of the FDE | |
200 | associated with the current function (body) definition. */ | |
201 | static unsigned current_funcdef_fde; | |
202 | ||
a3f97cbb | 203 | /* Forward declarations for functions defined in this file. */ |
71dfc51f | 204 | |
d560ee52 KG |
205 | static char *stripattributes PROTO((const char *)); |
206 | static const char *dwarf_cfi_name PROTO((unsigned)); | |
3f76745e JM |
207 | static dw_cfi_ref new_cfi PROTO((void)); |
208 | static void add_cfi PROTO((dw_cfi_ref *, dw_cfi_ref)); | |
71dfc51f RK |
209 | static unsigned long size_of_uleb128 PROTO((unsigned long)); |
210 | static unsigned long size_of_sleb128 PROTO((long)); | |
71dfc51f RK |
211 | static void output_uleb128 PROTO((unsigned long)); |
212 | static void output_sleb128 PROTO((long)); | |
71dfc51f RK |
213 | static void add_fde_cfi PROTO((char *, dw_cfi_ref)); |
214 | static void lookup_cfa_1 PROTO((dw_cfi_ref, unsigned long *, | |
215 | long *)); | |
216 | static void lookup_cfa PROTO((unsigned long *, long *)); | |
217 | static void reg_save PROTO((char *, unsigned, unsigned, | |
218 | long)); | |
219 | static void initial_return_save PROTO((rtx)); | |
71dfc51f | 220 | static void output_cfi PROTO((dw_cfi_ref, dw_fde_ref)); |
3f76745e | 221 | static void output_call_frame_info PROTO((int)); |
71dfc51f | 222 | static unsigned reg_number PROTO((rtx)); |
1ad4f46b | 223 | static void dwarf2out_stack_adjust PROTO((rtx)); |
d560ee52 | 224 | static void dwarf2out_frame_debug_expr PROTO((rtx, char *)); |
a3f97cbb JW |
225 | |
226 | /* Definitions of defaults for assembler-dependent names of various | |
227 | pseudo-ops and section names. | |
228 | Theses may be overridden in the tm.h file (if necessary) for a particular | |
229 | assembler. */ | |
71dfc51f | 230 | |
0021b564 | 231 | #ifdef OBJECT_FORMAT_ELF |
a3f97cbb JW |
232 | #ifndef UNALIGNED_SHORT_ASM_OP |
233 | #define UNALIGNED_SHORT_ASM_OP ".2byte" | |
234 | #endif | |
235 | #ifndef UNALIGNED_INT_ASM_OP | |
236 | #define UNALIGNED_INT_ASM_OP ".4byte" | |
237 | #endif | |
7e23cb16 JM |
238 | #ifndef UNALIGNED_DOUBLE_INT_ASM_OP |
239 | #define UNALIGNED_DOUBLE_INT_ASM_OP ".8byte" | |
240 | #endif | |
0021b564 JM |
241 | #endif /* OBJECT_FORMAT_ELF */ |
242 | ||
a3f97cbb JW |
243 | #ifndef ASM_BYTE_OP |
244 | #define ASM_BYTE_OP ".byte" | |
245 | #endif | |
246 | ||
7e23cb16 JM |
247 | /* Data and reference forms for relocatable data. */ |
248 | #define DW_FORM_data (DWARF_OFFSET_SIZE == 8 ? DW_FORM_data8 : DW_FORM_data4) | |
249 | #define DW_FORM_ref (DWARF_OFFSET_SIZE == 8 ? DW_FORM_ref8 : DW_FORM_ref4) | |
250 | ||
a3f97cbb JW |
251 | /* Pseudo-op for defining a new section. */ |
252 | #ifndef SECTION_ASM_OP | |
253 | #define SECTION_ASM_OP ".section" | |
254 | #endif | |
255 | ||
256 | /* The default format used by the ASM_OUTPUT_SECTION macro (see below) to | |
257 | print the SECTION_ASM_OP and the section name. The default here works for | |
258 | almost all svr4 assemblers, except for the sparc, where the section name | |
259 | must be enclosed in double quotes. (See sparcv4.h). */ | |
260 | #ifndef SECTION_FORMAT | |
c53aa195 JM |
261 | #ifdef PUSHSECTION_FORMAT |
262 | #define SECTION_FORMAT PUSHSECTION_FORMAT | |
263 | #else | |
264 | #define SECTION_FORMAT "\t%s\t%s\n" | |
265 | #endif | |
a3f97cbb JW |
266 | #endif |
267 | ||
a3f97cbb JW |
268 | #ifndef FRAME_SECTION |
269 | #define FRAME_SECTION ".debug_frame" | |
270 | #endif | |
a3f97cbb | 271 | |
5c90448c JM |
272 | #ifndef FUNC_BEGIN_LABEL |
273 | #define FUNC_BEGIN_LABEL "LFB" | |
a3f97cbb | 274 | #endif |
5c90448c JM |
275 | #ifndef FUNC_END_LABEL |
276 | #define FUNC_END_LABEL "LFE" | |
a3f97cbb | 277 | #endif |
a6ab3aad JM |
278 | #define CIE_AFTER_SIZE_LABEL "LSCIE" |
279 | #define CIE_END_LABEL "LECIE" | |
2ed2af28 | 280 | #define CIE_LENGTH_LABEL "LLCIE" |
a6ab3aad JM |
281 | #define FDE_AFTER_SIZE_LABEL "LSFDE" |
282 | #define FDE_END_LABEL "LEFDE" | |
2ed2af28 | 283 | #define FDE_LENGTH_LABEL "LLFDE" |
a3f97cbb | 284 | |
a3f97cbb JW |
285 | /* Definitions of defaults for various types of primitive assembly language |
286 | output operations. These may be overridden from within the tm.h file, | |
956d6950 | 287 | but typically, that is unnecessary. */ |
71dfc51f | 288 | |
a3f97cbb JW |
289 | #ifndef ASM_OUTPUT_SECTION |
290 | #define ASM_OUTPUT_SECTION(FILE, SECTION) \ | |
291 | fprintf ((FILE), SECTION_FORMAT, SECTION_ASM_OP, SECTION) | |
292 | #endif | |
293 | ||
0021b564 JM |
294 | #ifndef ASM_OUTPUT_DWARF_DATA1 |
295 | #define ASM_OUTPUT_DWARF_DATA1(FILE,VALUE) \ | |
32bd96ff | 296 | fprintf ((FILE), "\t%s\t0x%x", ASM_BYTE_OP, (unsigned) (VALUE)) |
0021b564 JM |
297 | #endif |
298 | ||
bb727b5a JM |
299 | #ifndef ASM_OUTPUT_DWARF_DELTA1 |
300 | #define ASM_OUTPUT_DWARF_DELTA1(FILE,LABEL1,LABEL2) \ | |
301 | do { fprintf ((FILE), "\t%s\t", ASM_BYTE_OP); \ | |
302 | assemble_name (FILE, LABEL1); \ | |
303 | fprintf (FILE, "-"); \ | |
304 | assemble_name (FILE, LABEL2); \ | |
305 | } while (0) | |
306 | #endif | |
307 | ||
0021b564 JM |
308 | #ifdef UNALIGNED_INT_ASM_OP |
309 | ||
310 | #ifndef UNALIGNED_OFFSET_ASM_OP | |
311 | #define UNALIGNED_OFFSET_ASM_OP \ | |
312 | (DWARF_OFFSET_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
313 | #endif | |
314 | ||
315 | #ifndef UNALIGNED_WORD_ASM_OP | |
316 | #define UNALIGNED_WORD_ASM_OP \ | |
317 | (PTR_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
318 | #endif | |
319 | ||
a3f97cbb JW |
320 | #ifndef ASM_OUTPUT_DWARF_DELTA2 |
321 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
322 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_SHORT_ASM_OP); \ | |
323 | assemble_name (FILE, LABEL1); \ | |
324 | fprintf (FILE, "-"); \ | |
325 | assemble_name (FILE, LABEL2); \ | |
326 | } while (0) | |
327 | #endif | |
328 | ||
329 | #ifndef ASM_OUTPUT_DWARF_DELTA4 | |
330 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
331 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
332 | assemble_name (FILE, LABEL1); \ | |
333 | fprintf (FILE, "-"); \ | |
334 | assemble_name (FILE, LABEL2); \ | |
335 | } while (0) | |
336 | #endif | |
337 | ||
7e23cb16 JM |
338 | #ifndef ASM_OUTPUT_DWARF_DELTA |
339 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
340 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
341 | assemble_name (FILE, LABEL1); \ | |
342 | fprintf (FILE, "-"); \ | |
343 | assemble_name (FILE, LABEL2); \ | |
344 | } while (0) | |
345 | #endif | |
346 | ||
347 | #ifndef ASM_OUTPUT_DWARF_ADDR_DELTA | |
348 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
349 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ | |
350 | assemble_name (FILE, LABEL1); \ | |
351 | fprintf (FILE, "-"); \ | |
352 | assemble_name (FILE, LABEL2); \ | |
353 | } while (0) | |
354 | #endif | |
355 | ||
a3f97cbb JW |
356 | #ifndef ASM_OUTPUT_DWARF_ADDR |
357 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
7e23cb16 | 358 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ |
a3f97cbb JW |
359 | assemble_name (FILE, LABEL); \ |
360 | } while (0) | |
361 | #endif | |
362 | ||
cba96cb7 JW |
363 | /* ??? This macro takes an RTX in dwarfout.c and a string in dwarf2out.c. |
364 | We resolve the conflict by creating a new macro ASM_OUTPUT_DWARF2_ADDR_CONST | |
365 | for ports that want to support both DWARF1 and DWARF2. This needs a better | |
366 | solution. See also the comments in sparc/sp64-elf.h. */ | |
367 | #ifdef ASM_OUTPUT_DWARF2_ADDR_CONST | |
368 | #undef ASM_OUTPUT_DWARF_ADDR_CONST | |
369 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,ADDR) \ | |
370 | ASM_OUTPUT_DWARF2_ADDR_CONST (FILE, ADDR) | |
371 | #endif | |
372 | ||
a3f97cbb JW |
373 | #ifndef ASM_OUTPUT_DWARF_ADDR_CONST |
374 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,ADDR) \ | |
7e23cb16 JM |
375 | fprintf ((FILE), "\t%s\t%s", UNALIGNED_WORD_ASM_OP, (ADDR)) |
376 | #endif | |
377 | ||
7bb9fb0e JM |
378 | #ifndef ASM_OUTPUT_DWARF_OFFSET4 |
379 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ | |
380 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
381 | assemble_name (FILE, LABEL); \ | |
382 | } while (0) | |
383 | #endif | |
384 | ||
7e23cb16 JM |
385 | #ifndef ASM_OUTPUT_DWARF_OFFSET |
386 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ | |
387 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
388 | assemble_name (FILE, LABEL); \ | |
389 | } while (0) | |
a3f97cbb JW |
390 | #endif |
391 | ||
a3f97cbb JW |
392 | #ifndef ASM_OUTPUT_DWARF_DATA2 |
393 | #define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \ | |
32bd96ff | 394 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_SHORT_ASM_OP, (unsigned) (VALUE)) |
a3f97cbb JW |
395 | #endif |
396 | ||
397 | #ifndef ASM_OUTPUT_DWARF_DATA4 | |
398 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
32bd96ff | 399 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, (unsigned) (VALUE)) |
a3f97cbb JW |
400 | #endif |
401 | ||
7e23cb16 JM |
402 | #ifndef ASM_OUTPUT_DWARF_DATA |
403 | #define ASM_OUTPUT_DWARF_DATA(FILE,VALUE) \ | |
404 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_OFFSET_ASM_OP, \ | |
32bd96ff | 405 | (unsigned long) (VALUE)) |
7e23cb16 JM |
406 | #endif |
407 | ||
408 | #ifndef ASM_OUTPUT_DWARF_ADDR_DATA | |
409 | #define ASM_OUTPUT_DWARF_ADDR_DATA(FILE,VALUE) \ | |
410 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_WORD_ASM_OP, \ | |
32bd96ff | 411 | (unsigned long) (VALUE)) |
7e23cb16 JM |
412 | #endif |
413 | ||
a3f97cbb JW |
414 | #ifndef ASM_OUTPUT_DWARF_DATA8 |
415 | #define ASM_OUTPUT_DWARF_DATA8(FILE,HIGH_VALUE,LOW_VALUE) \ | |
416 | do { \ | |
417 | if (WORDS_BIG_ENDIAN) \ | |
418 | { \ | |
32bd96ff JM |
419 | fprintf ((FILE), "\t%s\t0x%lx\n", UNALIGNED_INT_ASM_OP, (HIGH_VALUE));\ |
420 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_INT_ASM_OP, (LOW_VALUE));\ | |
a3f97cbb JW |
421 | } \ |
422 | else \ | |
423 | { \ | |
32bd96ff JM |
424 | fprintf ((FILE), "\t%s\t0x%lx\n", UNALIGNED_INT_ASM_OP, (LOW_VALUE)); \ |
425 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_INT_ASM_OP, (HIGH_VALUE)); \ | |
a3f97cbb JW |
426 | } \ |
427 | } while (0) | |
428 | #endif | |
429 | ||
0021b564 JM |
430 | #else /* UNALIGNED_INT_ASM_OP */ |
431 | ||
432 | /* We don't have unaligned support, let's hope the normal output works for | |
433 | .debug_frame. */ | |
434 | ||
435 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
38a448ca | 436 | assemble_integer (gen_rtx_SYMBOL_REF (Pmode, LABEL), PTR_SIZE, 1) |
0021b564 | 437 | |
7bb9fb0e | 438 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ |
38a448ca | 439 | assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1) |
7bb9fb0e | 440 | |
0021b564 | 441 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ |
38a448ca | 442 | assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1) |
0021b564 JM |
443 | |
444 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
38a448ca | 445 | assemble_integer (gen_rtx_MINUS (HImode, \ |
c5c76735 JL |
446 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ |
447 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 JM |
448 | 2, 1) |
449 | ||
450 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
38a448ca | 451 | assemble_integer (gen_rtx_MINUS (SImode, \ |
c5c76735 JL |
452 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ |
453 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 JM |
454 | 4, 1) |
455 | ||
456 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
38a448ca | 457 | assemble_integer (gen_rtx_MINUS (Pmode, \ |
c5c76735 JL |
458 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ |
459 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 JM |
460 | PTR_SIZE, 1) |
461 | ||
462 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
463 | ASM_OUTPUT_DWARF_DELTA4 (FILE,LABEL1,LABEL2) | |
464 | ||
465 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
466 | assemble_integer (GEN_INT (VALUE), 4, 1) | |
467 | ||
468 | #endif /* UNALIGNED_INT_ASM_OP */ | |
469 | ||
2ed2af28 PDM |
470 | #ifdef SET_ASM_OP |
471 | #ifndef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL | |
7bb9fb0e JM |
472 | #define ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL(FILE, SY, HI, LO) \ |
473 | do { \ | |
474 | fprintf (FILE, "\t%s\t", SET_ASM_OP); \ | |
475 | assemble_name (FILE, SY); \ | |
476 | fputc (',', FILE); \ | |
477 | assemble_name (FILE, HI); \ | |
478 | fputc ('-', FILE); \ | |
479 | assemble_name (FILE, LO); \ | |
480 | } while (0) | |
2ed2af28 PDM |
481 | #endif |
482 | #endif /* SET_ASM_OP */ | |
483 | ||
a6ab3aad | 484 | /* This is similar to the default ASM_OUTPUT_ASCII, except that no trailing |
2ed2af28 | 485 | newline is produced. When flag_debug_asm is asserted, we add commentary |
a6ab3aad JM |
486 | at the end of the line, so we must avoid output of a newline here. */ |
487 | #ifndef ASM_OUTPUT_DWARF_STRING | |
488 | #define ASM_OUTPUT_DWARF_STRING(FILE,P) \ | |
489 | do { \ | |
490 | register int slen = strlen(P); \ | |
d560ee52 | 491 | register const char *p = (P); \ |
a6ab3aad JM |
492 | register int i; \ |
493 | fprintf (FILE, "\t.ascii \""); \ | |
494 | for (i = 0; i < slen; i++) \ | |
495 | { \ | |
496 | register int c = p[i]; \ | |
497 | if (c == '\"' || c == '\\') \ | |
498 | putc ('\\', FILE); \ | |
f3ad1f9c | 499 | if (ISPRINT(c)) \ |
a6ab3aad JM |
500 | putc (c, FILE); \ |
501 | else \ | |
502 | { \ | |
503 | fprintf (FILE, "\\%o", c); \ | |
504 | } \ | |
505 | } \ | |
506 | fprintf (FILE, "\\0\""); \ | |
507 | } \ | |
508 | while (0) | |
509 | #endif | |
510 | ||
c8cc5c4a | 511 | /* The DWARF 2 CFA column which tracks the return address. Normally this |
a94dbf2c JM |
512 | is the column for PC, or the first column after all of the hard |
513 | registers. */ | |
c8cc5c4a | 514 | #ifndef DWARF_FRAME_RETURN_COLUMN |
a94dbf2c JM |
515 | #ifdef PC_REGNUM |
516 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) | |
517 | #else | |
466446b0 | 518 | #define DWARF_FRAME_RETURN_COLUMN FIRST_PSEUDO_REGISTER |
a94dbf2c | 519 | #endif |
c8cc5c4a JM |
520 | #endif |
521 | ||
522 | /* The mapping from gcc register number to DWARF 2 CFA column number. By | |
469ac993 | 523 | default, we just provide columns for all registers. */ |
c8cc5c4a | 524 | #ifndef DWARF_FRAME_REGNUM |
469ac993 | 525 | #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) |
c8cc5c4a | 526 | #endif |
3f76745e | 527 | |
0021b564 JM |
528 | /* Hook used by __throw. */ |
529 | ||
530 | rtx | |
531 | expand_builtin_dwarf_fp_regnum () | |
532 | { | |
533 | return GEN_INT (DWARF_FRAME_REGNUM (HARD_FRAME_POINTER_REGNUM)); | |
534 | } | |
535 | ||
a6ab3aad JM |
536 | /* The offset from the incoming value of %sp to the top of the stack frame |
537 | for the current function. */ | |
538 | #ifndef INCOMING_FRAME_SP_OFFSET | |
539 | #define INCOMING_FRAME_SP_OFFSET 0 | |
540 | #endif | |
541 | ||
71dfc51f | 542 | /* Return a pointer to a copy of the section string name S with all |
bf20f341 | 543 | attributes stripped off, and an asterisk prepended (for assemble_name). */ |
71dfc51f RK |
544 | |
545 | static inline char * | |
a3f97cbb | 546 | stripattributes (s) |
d560ee52 | 547 | const char *s; |
a3f97cbb | 548 | { |
bf20f341 | 549 | char *stripped = xmalloc (strlen (s) + 2); |
71dfc51f RK |
550 | char *p = stripped; |
551 | ||
bf20f341 JW |
552 | *p++ = '*'; |
553 | ||
554 | while (*s && *s != ',') | |
555 | *p++ = *s++; | |
71dfc51f | 556 | |
a3f97cbb JW |
557 | *p = '\0'; |
558 | return stripped; | |
559 | } | |
560 | ||
3f76745e | 561 | /* Return the register number described by a given RTL node. */ |
71dfc51f | 562 | |
3f76745e JM |
563 | static unsigned |
564 | reg_number (rtl) | |
565 | register rtx rtl; | |
a3f97cbb | 566 | { |
3f76745e | 567 | register unsigned regno = REGNO (rtl); |
a3f97cbb | 568 | |
3f76745e | 569 | if (regno >= FIRST_PSEUDO_REGISTER) |
a3f97cbb | 570 | { |
3f76745e JM |
571 | warning ("internal regno botch: regno = %d\n", regno); |
572 | regno = 0; | |
573 | } | |
a3f97cbb | 574 | |
3f76745e JM |
575 | regno = DBX_REGISTER_NUMBER (regno); |
576 | return regno; | |
577 | } | |
a3f97cbb | 578 | |
d9d5c9de | 579 | /* Generate code to initialize the register size table. */ |
2f3ca9e7 | 580 | |
d9d5c9de BS |
581 | void |
582 | expand_builtin_init_dwarf_reg_sizes (address) | |
583 | tree address; | |
2f3ca9e7 | 584 | { |
d9d5c9de BS |
585 | int i; |
586 | enum machine_mode mode = TYPE_MODE (char_type_node); | |
587 | rtx addr = expand_expr (address, NULL_RTX, VOIDmode, 0); | |
588 | rtx mem = gen_rtx_MEM (mode, addr); | |
2f3ca9e7 | 589 | |
d9d5c9de | 590 | for (i = 0; i < FIRST_PSEUDO_REGISTER; ++i) |
2f3ca9e7 | 591 | { |
d9d5c9de BS |
592 | int offset = i * GET_MODE_SIZE (mode); |
593 | int size = GET_MODE_SIZE (reg_raw_mode[i]); | |
2f3ca9e7 | 594 | |
d9d5c9de BS |
595 | emit_move_insn (change_address (mem, mode, |
596 | plus_constant (addr, offset)), | |
597 | GEN_INT (size)); | |
2f3ca9e7 | 598 | } |
2f3ca9e7 JM |
599 | } |
600 | ||
3f76745e | 601 | /* Convert a DWARF call frame info. operation to its string name */ |
a3f97cbb | 602 | |
d560ee52 | 603 | static const char * |
3f76745e JM |
604 | dwarf_cfi_name (cfi_opc) |
605 | register unsigned cfi_opc; | |
606 | { | |
607 | switch (cfi_opc) | |
608 | { | |
609 | case DW_CFA_advance_loc: | |
610 | return "DW_CFA_advance_loc"; | |
611 | case DW_CFA_offset: | |
612 | return "DW_CFA_offset"; | |
613 | case DW_CFA_restore: | |
614 | return "DW_CFA_restore"; | |
615 | case DW_CFA_nop: | |
616 | return "DW_CFA_nop"; | |
617 | case DW_CFA_set_loc: | |
618 | return "DW_CFA_set_loc"; | |
619 | case DW_CFA_advance_loc1: | |
620 | return "DW_CFA_advance_loc1"; | |
621 | case DW_CFA_advance_loc2: | |
622 | return "DW_CFA_advance_loc2"; | |
623 | case DW_CFA_advance_loc4: | |
624 | return "DW_CFA_advance_loc4"; | |
625 | case DW_CFA_offset_extended: | |
626 | return "DW_CFA_offset_extended"; | |
627 | case DW_CFA_restore_extended: | |
628 | return "DW_CFA_restore_extended"; | |
629 | case DW_CFA_undefined: | |
630 | return "DW_CFA_undefined"; | |
631 | case DW_CFA_same_value: | |
632 | return "DW_CFA_same_value"; | |
633 | case DW_CFA_register: | |
634 | return "DW_CFA_register"; | |
635 | case DW_CFA_remember_state: | |
636 | return "DW_CFA_remember_state"; | |
637 | case DW_CFA_restore_state: | |
638 | return "DW_CFA_restore_state"; | |
639 | case DW_CFA_def_cfa: | |
640 | return "DW_CFA_def_cfa"; | |
641 | case DW_CFA_def_cfa_register: | |
642 | return "DW_CFA_def_cfa_register"; | |
643 | case DW_CFA_def_cfa_offset: | |
644 | return "DW_CFA_def_cfa_offset"; | |
c53aa195 | 645 | |
3f76745e JM |
646 | /* SGI/MIPS specific */ |
647 | case DW_CFA_MIPS_advance_loc8: | |
648 | return "DW_CFA_MIPS_advance_loc8"; | |
c53aa195 JM |
649 | |
650 | /* GNU extensions */ | |
651 | case DW_CFA_GNU_window_save: | |
652 | return "DW_CFA_GNU_window_save"; | |
0021b564 JM |
653 | case DW_CFA_GNU_args_size: |
654 | return "DW_CFA_GNU_args_size"; | |
c53aa195 | 655 | |
3f76745e JM |
656 | default: |
657 | return "DW_CFA_<unknown>"; | |
658 | } | |
659 | } | |
a3f97cbb | 660 | |
3f76745e | 661 | /* Return a pointer to a newly allocated Call Frame Instruction. */ |
71dfc51f | 662 | |
3f76745e JM |
663 | static inline dw_cfi_ref |
664 | new_cfi () | |
665 | { | |
666 | register dw_cfi_ref cfi = (dw_cfi_ref) xmalloc (sizeof (dw_cfi_node)); | |
71dfc51f | 667 | |
3f76745e JM |
668 | cfi->dw_cfi_next = NULL; |
669 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = 0; | |
670 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = 0; | |
a3f97cbb | 671 | |
3f76745e JM |
672 | return cfi; |
673 | } | |
a3f97cbb | 674 | |
3f76745e | 675 | /* Add a Call Frame Instruction to list of instructions. */ |
a3f97cbb | 676 | |
3f76745e JM |
677 | static inline void |
678 | add_cfi (list_head, cfi) | |
679 | register dw_cfi_ref *list_head; | |
680 | register dw_cfi_ref cfi; | |
681 | { | |
682 | register dw_cfi_ref *p; | |
a3f97cbb | 683 | |
3f76745e JM |
684 | /* Find the end of the chain. */ |
685 | for (p = list_head; (*p) != NULL; p = &(*p)->dw_cfi_next) | |
686 | ; | |
687 | ||
688 | *p = cfi; | |
a3f97cbb JW |
689 | } |
690 | ||
3f76745e | 691 | /* Generate a new label for the CFI info to refer to. */ |
71dfc51f | 692 | |
c53aa195 | 693 | char * |
3f76745e | 694 | dwarf2out_cfi_label () |
a3f97cbb | 695 | { |
3f76745e JM |
696 | static char label[20]; |
697 | static unsigned long label_num = 0; | |
698 | ||
699 | ASM_GENERATE_INTERNAL_LABEL (label, "LCFI", label_num++); | |
700 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
701 | ||
702 | return label; | |
a3f97cbb JW |
703 | } |
704 | ||
3f76745e JM |
705 | /* Add CFI to the current fde at the PC value indicated by LABEL if specified, |
706 | or to the CIE if LABEL is NULL. */ | |
71dfc51f | 707 | |
3f76745e JM |
708 | static void |
709 | add_fde_cfi (label, cfi) | |
710 | register char *label; | |
711 | register dw_cfi_ref cfi; | |
a3f97cbb | 712 | { |
3f76745e JM |
713 | if (label) |
714 | { | |
715 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; | |
a3f97cbb | 716 | |
3f76745e JM |
717 | if (*label == 0) |
718 | label = dwarf2out_cfi_label (); | |
71dfc51f | 719 | |
3f76745e JM |
720 | if (fde->dw_fde_current_label == NULL |
721 | || strcmp (label, fde->dw_fde_current_label) != 0) | |
722 | { | |
723 | register dw_cfi_ref xcfi; | |
a3f97cbb | 724 | |
3f76745e | 725 | fde->dw_fde_current_label = label = xstrdup (label); |
71dfc51f | 726 | |
3f76745e JM |
727 | /* Set the location counter to the new label. */ |
728 | xcfi = new_cfi (); | |
729 | xcfi->dw_cfi_opc = DW_CFA_advance_loc4; | |
730 | xcfi->dw_cfi_oprnd1.dw_cfi_addr = label; | |
731 | add_cfi (&fde->dw_fde_cfi, xcfi); | |
732 | } | |
71dfc51f | 733 | |
3f76745e JM |
734 | add_cfi (&fde->dw_fde_cfi, cfi); |
735 | } | |
736 | ||
737 | else | |
738 | add_cfi (&cie_cfi_head, cfi); | |
a3f97cbb JW |
739 | } |
740 | ||
3f76745e | 741 | /* Subroutine of lookup_cfa. */ |
71dfc51f | 742 | |
3f76745e JM |
743 | static inline void |
744 | lookup_cfa_1 (cfi, regp, offsetp) | |
745 | register dw_cfi_ref cfi; | |
746 | register unsigned long *regp; | |
747 | register long *offsetp; | |
a3f97cbb | 748 | { |
3f76745e JM |
749 | switch (cfi->dw_cfi_opc) |
750 | { | |
751 | case DW_CFA_def_cfa_offset: | |
752 | *offsetp = cfi->dw_cfi_oprnd1.dw_cfi_offset; | |
753 | break; | |
754 | case DW_CFA_def_cfa_register: | |
755 | *regp = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; | |
756 | break; | |
757 | case DW_CFA_def_cfa: | |
758 | *regp = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; | |
759 | *offsetp = cfi->dw_cfi_oprnd2.dw_cfi_offset; | |
760 | break; | |
e9a25f70 JL |
761 | default: |
762 | break; | |
3f76745e | 763 | } |
a3f97cbb JW |
764 | } |
765 | ||
3f76745e | 766 | /* Find the previous value for the CFA. */ |
71dfc51f | 767 | |
3f76745e JM |
768 | static void |
769 | lookup_cfa (regp, offsetp) | |
770 | register unsigned long *regp; | |
771 | register long *offsetp; | |
a3f97cbb | 772 | { |
3f76745e JM |
773 | register dw_cfi_ref cfi; |
774 | ||
775 | *regp = (unsigned long) -1; | |
776 | *offsetp = 0; | |
777 | ||
778 | for (cfi = cie_cfi_head; cfi; cfi = cfi->dw_cfi_next) | |
779 | lookup_cfa_1 (cfi, regp, offsetp); | |
780 | ||
781 | if (fde_table_in_use) | |
a3f97cbb | 782 | { |
3f76745e JM |
783 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; |
784 | for (cfi = fde->dw_fde_cfi; cfi; cfi = cfi->dw_cfi_next) | |
785 | lookup_cfa_1 (cfi, regp, offsetp); | |
a3f97cbb JW |
786 | } |
787 | } | |
788 | ||
3f76745e | 789 | /* The current rule for calculating the DWARF2 canonical frame address. */ |
a6ab3aad | 790 | static unsigned long cfa_reg; |
3f76745e | 791 | static long cfa_offset; |
71dfc51f | 792 | |
3f76745e JM |
793 | /* The register used for saving registers to the stack, and its offset |
794 | from the CFA. */ | |
795 | static unsigned cfa_store_reg; | |
796 | static long cfa_store_offset; | |
797 | ||
0021b564 JM |
798 | /* The running total of the size of arguments pushed onto the stack. */ |
799 | static long args_size; | |
800 | ||
b57d9225 JM |
801 | /* The last args_size we actually output. */ |
802 | static long old_args_size; | |
803 | ||
3f76745e JM |
804 | /* Entry point to update the canonical frame address (CFA). |
805 | LABEL is passed to add_fde_cfi. The value of CFA is now to be | |
806 | calculated from REG+OFFSET. */ | |
807 | ||
808 | void | |
809 | dwarf2out_def_cfa (label, reg, offset) | |
810 | register char *label; | |
811 | register unsigned reg; | |
812 | register long offset; | |
a3f97cbb | 813 | { |
3f76745e JM |
814 | register dw_cfi_ref cfi; |
815 | unsigned long old_reg; | |
816 | long old_offset; | |
817 | ||
5bef9b1f JM |
818 | cfa_reg = reg; |
819 | cfa_offset = offset; | |
820 | if (cfa_store_reg == reg) | |
821 | cfa_store_offset = offset; | |
822 | ||
3f76745e JM |
823 | reg = DWARF_FRAME_REGNUM (reg); |
824 | lookup_cfa (&old_reg, &old_offset); | |
825 | ||
826 | if (reg == old_reg && offset == old_offset) | |
827 | return; | |
828 | ||
829 | cfi = new_cfi (); | |
830 | ||
831 | if (reg == old_reg) | |
a3f97cbb | 832 | { |
3f76745e JM |
833 | cfi->dw_cfi_opc = DW_CFA_def_cfa_offset; |
834 | cfi->dw_cfi_oprnd1.dw_cfi_offset = offset; | |
835 | } | |
a3f97cbb | 836 | |
3f76745e JM |
837 | #ifndef MIPS_DEBUGGING_INFO /* SGI dbx thinks this means no offset. */ |
838 | else if (offset == old_offset && old_reg != (unsigned long) -1) | |
839 | { | |
840 | cfi->dw_cfi_opc = DW_CFA_def_cfa_register; | |
841 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
842 | } | |
843 | #endif | |
a3f97cbb | 844 | |
3f76745e JM |
845 | else |
846 | { | |
847 | cfi->dw_cfi_opc = DW_CFA_def_cfa; | |
848 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
849 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; | |
a3f97cbb | 850 | } |
3f76745e JM |
851 | |
852 | add_fde_cfi (label, cfi); | |
a3f97cbb JW |
853 | } |
854 | ||
3f76745e JM |
855 | /* Add the CFI for saving a register. REG is the CFA column number. |
856 | LABEL is passed to add_fde_cfi. | |
857 | If SREG is -1, the register is saved at OFFSET from the CFA; | |
858 | otherwise it is saved in SREG. */ | |
71dfc51f | 859 | |
3f76745e JM |
860 | static void |
861 | reg_save (label, reg, sreg, offset) | |
862 | register char * label; | |
863 | register unsigned reg; | |
864 | register unsigned sreg; | |
865 | register long offset; | |
a3f97cbb | 866 | { |
3f76745e JM |
867 | register dw_cfi_ref cfi = new_cfi (); |
868 | ||
869 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
870 | ||
85066503 MH |
871 | /* The following comparison is correct. -1 is used to indicate that |
872 | the value isn't a register number. */ | |
873 | if (sreg == (unsigned int) -1) | |
a3f97cbb | 874 | { |
3f76745e JM |
875 | if (reg & ~0x3f) |
876 | /* The register number won't fit in 6 bits, so we have to use | |
877 | the long form. */ | |
878 | cfi->dw_cfi_opc = DW_CFA_offset_extended; | |
879 | else | |
880 | cfi->dw_cfi_opc = DW_CFA_offset; | |
881 | ||
882 | offset /= DWARF_CIE_DATA_ALIGNMENT; | |
3a88cbd1 JL |
883 | if (offset < 0) |
884 | abort (); | |
3f76745e JM |
885 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; |
886 | } | |
887 | else | |
888 | { | |
889 | cfi->dw_cfi_opc = DW_CFA_register; | |
890 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = sreg; | |
891 | } | |
892 | ||
893 | add_fde_cfi (label, cfi); | |
894 | } | |
895 | ||
c53aa195 JM |
896 | /* Add the CFI for saving a register window. LABEL is passed to reg_save. |
897 | This CFI tells the unwinder that it needs to restore the window registers | |
898 | from the previous frame's window save area. | |
899 | ||
900 | ??? Perhaps we should note in the CIE where windows are saved (instead of | |
901 | assuming 0(cfa)) and what registers are in the window. */ | |
902 | ||
903 | void | |
904 | dwarf2out_window_save (label) | |
905 | register char * label; | |
906 | { | |
907 | register dw_cfi_ref cfi = new_cfi (); | |
908 | cfi->dw_cfi_opc = DW_CFA_GNU_window_save; | |
909 | add_fde_cfi (label, cfi); | |
910 | } | |
911 | ||
0021b564 JM |
912 | /* Add a CFI to update the running total of the size of arguments |
913 | pushed onto the stack. */ | |
914 | ||
915 | void | |
916 | dwarf2out_args_size (label, size) | |
917 | char *label; | |
918 | long size; | |
919 | { | |
b57d9225 JM |
920 | register dw_cfi_ref cfi; |
921 | ||
922 | if (size == old_args_size) | |
923 | return; | |
924 | old_args_size = size; | |
925 | ||
926 | cfi = new_cfi (); | |
0021b564 JM |
927 | cfi->dw_cfi_opc = DW_CFA_GNU_args_size; |
928 | cfi->dw_cfi_oprnd1.dw_cfi_offset = size; | |
929 | add_fde_cfi (label, cfi); | |
930 | } | |
931 | ||
c53aa195 JM |
932 | /* Entry point for saving a register to the stack. REG is the GCC register |
933 | number. LABEL and OFFSET are passed to reg_save. */ | |
3f76745e JM |
934 | |
935 | void | |
936 | dwarf2out_reg_save (label, reg, offset) | |
937 | register char * label; | |
938 | register unsigned reg; | |
939 | register long offset; | |
940 | { | |
941 | reg_save (label, DWARF_FRAME_REGNUM (reg), -1, offset); | |
942 | } | |
943 | ||
c53aa195 JM |
944 | /* Entry point for saving the return address in the stack. |
945 | LABEL and OFFSET are passed to reg_save. */ | |
946 | ||
947 | void | |
948 | dwarf2out_return_save (label, offset) | |
949 | register char * label; | |
950 | register long offset; | |
951 | { | |
952 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, -1, offset); | |
953 | } | |
954 | ||
955 | /* Entry point for saving the return address in a register. | |
956 | LABEL and SREG are passed to reg_save. */ | |
957 | ||
958 | void | |
959 | dwarf2out_return_reg (label, sreg) | |
960 | register char * label; | |
961 | register unsigned sreg; | |
962 | { | |
963 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, sreg, 0); | |
964 | } | |
965 | ||
3f76745e JM |
966 | /* Record the initial position of the return address. RTL is |
967 | INCOMING_RETURN_ADDR_RTX. */ | |
968 | ||
969 | static void | |
970 | initial_return_save (rtl) | |
971 | register rtx rtl; | |
972 | { | |
973838fd | 973 | unsigned int reg = (unsigned int) -1; |
3f76745e JM |
974 | long offset = 0; |
975 | ||
976 | switch (GET_CODE (rtl)) | |
977 | { | |
978 | case REG: | |
979 | /* RA is in a register. */ | |
980 | reg = reg_number (rtl); | |
981 | break; | |
982 | case MEM: | |
983 | /* RA is on the stack. */ | |
984 | rtl = XEXP (rtl, 0); | |
985 | switch (GET_CODE (rtl)) | |
986 | { | |
987 | case REG: | |
3a88cbd1 JL |
988 | if (REGNO (rtl) != STACK_POINTER_REGNUM) |
989 | abort (); | |
3f76745e JM |
990 | offset = 0; |
991 | break; | |
992 | case PLUS: | |
3a88cbd1 JL |
993 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
994 | abort (); | |
3f76745e JM |
995 | offset = INTVAL (XEXP (rtl, 1)); |
996 | break; | |
997 | case MINUS: | |
3a88cbd1 JL |
998 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
999 | abort (); | |
3f76745e JM |
1000 | offset = -INTVAL (XEXP (rtl, 1)); |
1001 | break; | |
1002 | default: | |
1003 | abort (); | |
1004 | } | |
1005 | break; | |
c53aa195 JM |
1006 | case PLUS: |
1007 | /* The return address is at some offset from any value we can | |
1008 | actually load. For instance, on the SPARC it is in %i7+8. Just | |
1009 | ignore the offset for now; it doesn't matter for unwinding frames. */ | |
3a88cbd1 JL |
1010 | if (GET_CODE (XEXP (rtl, 1)) != CONST_INT) |
1011 | abort (); | |
c53aa195 JM |
1012 | initial_return_save (XEXP (rtl, 0)); |
1013 | return; | |
a3f97cbb | 1014 | default: |
3f76745e | 1015 | abort (); |
a3f97cbb | 1016 | } |
3f76745e | 1017 | |
a6ab3aad | 1018 | reg_save (NULL, DWARF_FRAME_RETURN_COLUMN, reg, offset - cfa_offset); |
a3f97cbb JW |
1019 | } |
1020 | ||
0021b564 JM |
1021 | /* Check INSN to see if it looks like a push or a stack adjustment, and |
1022 | make a note of it if it does. EH uses this information to find out how | |
1023 | much extra space it needs to pop off the stack. */ | |
1024 | ||
1025 | static void | |
1026 | dwarf2out_stack_adjust (insn) | |
1027 | rtx insn; | |
1028 | { | |
0021b564 JM |
1029 | long offset; |
1030 | char *label; | |
1031 | ||
b57d9225 JM |
1032 | if (! asynchronous_exceptions && GET_CODE (insn) == CALL_INSN) |
1033 | { | |
1034 | /* Extract the size of the args from the CALL rtx itself. */ | |
1035 | ||
1036 | insn = PATTERN (insn); | |
1037 | if (GET_CODE (insn) == PARALLEL) | |
1038 | insn = XVECEXP (insn, 0, 0); | |
1039 | if (GET_CODE (insn) == SET) | |
1040 | insn = SET_SRC (insn); | |
1041 | assert (GET_CODE (insn) == CALL); | |
1042 | dwarf2out_args_size ("", INTVAL (XEXP (insn, 1))); | |
1043 | return; | |
1044 | } | |
1045 | ||
1046 | /* If only calls can throw, and we have a frame pointer, | |
1047 | save up adjustments until we see the CALL_INSN. */ | |
1048 | else if (! asynchronous_exceptions | |
1049 | && cfa_reg != STACK_POINTER_REGNUM) | |
1050 | return; | |
1051 | ||
6020d360 | 1052 | if (GET_CODE (insn) == BARRIER) |
0021b564 | 1053 | { |
6020d360 JM |
1054 | /* When we see a BARRIER, we know to reset args_size to 0. Usually |
1055 | the compiler will have already emitted a stack adjustment, but | |
1056 | doesn't bother for calls to noreturn functions. */ | |
1057 | #ifdef STACK_GROWS_DOWNWARD | |
1058 | offset = -args_size; | |
1059 | #else | |
1060 | offset = args_size; | |
1061 | #endif | |
0021b564 | 1062 | } |
6020d360 | 1063 | else if (GET_CODE (PATTERN (insn)) == SET) |
0021b564 | 1064 | { |
6020d360 JM |
1065 | rtx src, dest; |
1066 | enum rtx_code code; | |
1067 | ||
1068 | insn = PATTERN (insn); | |
1069 | src = SET_SRC (insn); | |
1070 | dest = SET_DEST (insn); | |
0021b564 | 1071 | |
6020d360 JM |
1072 | if (dest == stack_pointer_rtx) |
1073 | { | |
1074 | /* (set (reg sp) (plus (reg sp) (const_int))) */ | |
1075 | code = GET_CODE (src); | |
1076 | if (! (code == PLUS || code == MINUS) | |
1077 | || XEXP (src, 0) != stack_pointer_rtx | |
1078 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
1079 | return; | |
1080 | ||
1081 | offset = INTVAL (XEXP (src, 1)); | |
1082 | } | |
1083 | else if (GET_CODE (dest) == MEM) | |
1084 | { | |
1085 | /* (set (mem (pre_dec (reg sp))) (foo)) */ | |
1086 | src = XEXP (dest, 0); | |
1087 | code = GET_CODE (src); | |
1088 | ||
1089 | if (! (code == PRE_DEC || code == PRE_INC) | |
1090 | || XEXP (src, 0) != stack_pointer_rtx) | |
1091 | return; | |
1092 | ||
1093 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1094 | } | |
1095 | else | |
0021b564 JM |
1096 | return; |
1097 | ||
6020d360 JM |
1098 | if (code == PLUS || code == PRE_INC) |
1099 | offset = -offset; | |
0021b564 JM |
1100 | } |
1101 | else | |
1102 | return; | |
1103 | ||
6020d360 JM |
1104 | if (offset == 0) |
1105 | return; | |
1106 | ||
0021b564 JM |
1107 | if (cfa_reg == STACK_POINTER_REGNUM) |
1108 | cfa_offset += offset; | |
1109 | ||
1110 | #ifndef STACK_GROWS_DOWNWARD | |
1111 | offset = -offset; | |
1112 | #endif | |
1113 | args_size += offset; | |
1114 | if (args_size < 0) | |
1115 | args_size = 0; | |
1116 | ||
1117 | label = dwarf2out_cfi_label (); | |
1118 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1119 | dwarf2out_args_size (label, args_size); | |
1120 | } | |
1121 | ||
b664de3a AM |
1122 | /* A temporary register used in adjusting SP or setting up the store_reg. */ |
1123 | static unsigned cfa_temp_reg; | |
1124 | ||
1125 | /* A temporary value used in adjusting SP or setting up the store_reg. */ | |
1126 | static long cfa_temp_value; | |
1127 | ||
1128 | /* Record call frame debugging information for an expression, which either | |
1129 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
1130 | register to the stack. */ | |
1131 | ||
1132 | static void | |
1133 | dwarf2out_frame_debug_expr (expr, label) | |
1134 | rtx expr; | |
1135 | char *label; | |
1136 | { | |
1137 | rtx src, dest; | |
1138 | long offset; | |
1139 | ||
1140 | /* If RTX_FRAME_RELATED_P is set on a PARALLEL, process each member of | |
1141 | the PARALLEL independantly. The first element is always processed if | |
1142 | it is a SET. This is for backward compatability. Other elements | |
1143 | are processed only if they are SETs and the RTX_FRAME_RELATED_P | |
1144 | flag is set in them. */ | |
1145 | ||
1146 | if (GET_CODE (expr) == PARALLEL) | |
1147 | { | |
1148 | int par_index; | |
1149 | int limit = XVECLEN (expr, 0); | |
1150 | ||
1151 | for (par_index = 0; par_index < limit; par_index++) | |
1152 | { | |
1153 | rtx x = XVECEXP (expr, 0, par_index); | |
1154 | ||
1155 | if (GET_CODE (x) == SET && | |
1156 | (RTX_FRAME_RELATED_P (x) || par_index == 0)) | |
2618f955 | 1157 | dwarf2out_frame_debug_expr (x, label); |
b664de3a AM |
1158 | } |
1159 | return; | |
1160 | } | |
1161 | ||
1162 | if (GET_CODE (expr) != SET) | |
1163 | abort (); | |
1164 | ||
1165 | src = SET_SRC (expr); | |
1166 | dest = SET_DEST (expr); | |
1167 | ||
1168 | switch (GET_CODE (dest)) | |
1169 | { | |
1170 | case REG: | |
1171 | /* Update the CFA rule wrt SP or FP. Make sure src is | |
1172 | relative to the current CFA register. */ | |
1173 | switch (GET_CODE (src)) | |
1174 | { | |
1175 | /* Setting FP from SP. */ | |
1176 | case REG: | |
1177 | if (cfa_reg != (unsigned) REGNO (src)) | |
1178 | abort (); | |
1179 | if (REGNO (dest) != STACK_POINTER_REGNUM | |
2618f955 MM |
1180 | && !(frame_pointer_needed |
1181 | && REGNO (dest) == HARD_FRAME_POINTER_REGNUM)) | |
b664de3a AM |
1182 | abort (); |
1183 | cfa_reg = REGNO (dest); | |
1184 | break; | |
1185 | ||
1186 | case PLUS: | |
1187 | case MINUS: | |
1188 | if (dest == stack_pointer_rtx) | |
1189 | { | |
2618f955 MM |
1190 | /* Adjusting SP. */ |
1191 | switch (GET_CODE (XEXP (src, 1))) | |
1192 | { | |
1193 | case CONST_INT: | |
1194 | offset = INTVAL (XEXP (src, 1)); | |
1195 | break; | |
1196 | case REG: | |
1197 | if ((unsigned) REGNO (XEXP (src, 1)) != cfa_temp_reg) | |
1198 | abort (); | |
1199 | offset = cfa_temp_value; | |
1200 | break; | |
1201 | default: | |
1202 | abort (); | |
1203 | } | |
1204 | ||
1205 | if (XEXP (src, 0) == hard_frame_pointer_rtx) | |
1206 | { | |
1207 | /* Restoring SP from FP in the epilogue. */ | |
1208 | if (cfa_reg != (unsigned) HARD_FRAME_POINTER_REGNUM) | |
1209 | abort (); | |
1210 | cfa_reg = STACK_POINTER_REGNUM; | |
1211 | } | |
1212 | else if (XEXP (src, 0) != stack_pointer_rtx) | |
1213 | abort (); | |
1214 | ||
1215 | if (GET_CODE (src) == PLUS) | |
1216 | offset = -offset; | |
1217 | if (cfa_reg == STACK_POINTER_REGNUM) | |
1218 | cfa_offset += offset; | |
1219 | if (cfa_store_reg == STACK_POINTER_REGNUM) | |
1220 | cfa_store_offset += offset; | |
b664de3a AM |
1221 | } |
1222 | else if (dest == hard_frame_pointer_rtx) | |
1223 | { | |
2618f955 MM |
1224 | /* Either setting the FP from an offset of the SP, |
1225 | or adjusting the FP */ | |
1226 | if (! frame_pointer_needed | |
1227 | || REGNO (dest) != HARD_FRAME_POINTER_REGNUM) | |
1228 | abort (); | |
1229 | ||
1230 | if (XEXP (src, 0) == stack_pointer_rtx | |
1231 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
1232 | { | |
1233 | if (cfa_reg != STACK_POINTER_REGNUM) | |
1234 | abort (); | |
1235 | offset = INTVAL (XEXP (src, 1)); | |
1236 | if (GET_CODE (src) == PLUS) | |
1237 | offset = -offset; | |
1238 | cfa_offset += offset; | |
1239 | cfa_reg = HARD_FRAME_POINTER_REGNUM; | |
1240 | } | |
1241 | else if (XEXP (src, 0) == hard_frame_pointer_rtx | |
1242 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
1243 | { | |
1244 | if (cfa_reg != (unsigned) HARD_FRAME_POINTER_REGNUM) | |
1245 | abort (); | |
1246 | offset = INTVAL (XEXP (src, 1)); | |
1247 | if (GET_CODE (src) == PLUS) | |
1248 | offset = -offset; | |
1249 | cfa_offset += offset; | |
1250 | } | |
1251 | ||
1252 | else | |
1253 | abort(); | |
b664de3a AM |
1254 | } |
1255 | else | |
1256 | { | |
2618f955 MM |
1257 | if (GET_CODE (src) != PLUS |
1258 | || XEXP (src, 1) != stack_pointer_rtx) | |
1259 | abort (); | |
1260 | if (GET_CODE (XEXP (src, 0)) != REG | |
1261 | || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp_reg) | |
1262 | abort (); | |
1263 | if (cfa_reg != STACK_POINTER_REGNUM) | |
1264 | abort (); | |
1265 | cfa_store_reg = REGNO (dest); | |
1266 | cfa_store_offset = cfa_offset - cfa_temp_value; | |
b664de3a AM |
1267 | } |
1268 | break; | |
1269 | ||
1270 | case CONST_INT: | |
1271 | cfa_temp_reg = REGNO (dest); | |
1272 | cfa_temp_value = INTVAL (src); | |
1273 | break; | |
1274 | ||
1275 | case IOR: | |
1276 | if (GET_CODE (XEXP (src, 0)) != REG | |
2618f955 MM |
1277 | || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp_reg |
1278 | || (unsigned) REGNO (dest) != cfa_temp_reg | |
1279 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
b664de3a AM |
1280 | abort (); |
1281 | cfa_temp_value |= INTVAL (XEXP (src, 1)); | |
1282 | break; | |
1283 | ||
1284 | default: | |
1285 | abort (); | |
1286 | } | |
1287 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
2618f955 | 1288 | break; |
b664de3a | 1289 | |
2618f955 MM |
1290 | case MEM: |
1291 | /* Saving a register to the stack. Make sure dest is relative to the | |
1292 | CFA register. */ | |
1293 | if (GET_CODE (src) != REG) | |
1294 | abort (); | |
1295 | switch (GET_CODE (XEXP (dest, 0))) | |
1296 | { | |
1297 | /* With a push. */ | |
1298 | case PRE_INC: | |
1299 | case PRE_DEC: | |
1300 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1301 | if (GET_CODE (XEXP (dest, 0)) == PRE_INC) | |
1302 | offset = -offset; | |
b664de3a | 1303 | |
2618f955 MM |
1304 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM |
1305 | || cfa_store_reg != STACK_POINTER_REGNUM) | |
1306 | abort (); | |
1307 | cfa_store_offset += offset; | |
1308 | if (cfa_reg == STACK_POINTER_REGNUM) | |
1309 | cfa_offset = cfa_store_offset; | |
b664de3a | 1310 | |
2618f955 MM |
1311 | offset = -cfa_store_offset; |
1312 | break; | |
b664de3a | 1313 | |
2618f955 MM |
1314 | /* With an offset. */ |
1315 | case PLUS: | |
1316 | case MINUS: | |
1317 | offset = INTVAL (XEXP (XEXP (dest, 0), 1)); | |
1318 | if (GET_CODE (XEXP (dest, 0)) == MINUS) | |
1319 | offset = -offset; | |
b664de3a | 1320 | |
2618f955 MM |
1321 | if (cfa_store_reg != (unsigned) REGNO (XEXP (XEXP (dest, 0), 0))) |
1322 | abort (); | |
1323 | offset -= cfa_store_offset; | |
1324 | break; | |
1325 | ||
1326 | /* Without an offset. */ | |
1327 | case REG: | |
1328 | if (cfa_store_reg != (unsigned) REGNO (XEXP (dest, 0))) | |
1329 | abort(); | |
1330 | offset = -cfa_store_offset; | |
1331 | break; | |
1332 | ||
1333 | default: | |
1334 | abort (); | |
1335 | } | |
1336 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1337 | dwarf2out_reg_save (label, REGNO (src), offset); | |
1338 | break; | |
1339 | ||
1340 | default: | |
1341 | abort (); | |
1342 | } | |
b664de3a AM |
1343 | } |
1344 | ||
1345 | ||
3f76745e JM |
1346 | /* Record call frame debugging information for INSN, which either |
1347 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
1348 | register to the stack. If INSN is NULL_RTX, initialize our state. */ | |
71dfc51f | 1349 | |
3f76745e JM |
1350 | void |
1351 | dwarf2out_frame_debug (insn) | |
1352 | rtx insn; | |
a3f97cbb | 1353 | { |
3f76745e | 1354 | char *label; |
b664de3a | 1355 | rtx src; |
3f76745e JM |
1356 | |
1357 | if (insn == NULL_RTX) | |
a3f97cbb | 1358 | { |
3f76745e | 1359 | /* Set up state for generating call frame debug info. */ |
a6ab3aad | 1360 | lookup_cfa (&cfa_reg, &cfa_offset); |
3a88cbd1 JL |
1361 | if (cfa_reg != DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM)) |
1362 | abort (); | |
3f76745e | 1363 | cfa_reg = STACK_POINTER_REGNUM; |
a6ab3aad JM |
1364 | cfa_store_reg = cfa_reg; |
1365 | cfa_store_offset = cfa_offset; | |
3f76745e JM |
1366 | cfa_temp_reg = -1; |
1367 | cfa_temp_value = 0; | |
1368 | return; | |
1369 | } | |
1370 | ||
0021b564 JM |
1371 | if (! RTX_FRAME_RELATED_P (insn)) |
1372 | { | |
6020d360 | 1373 | dwarf2out_stack_adjust (insn); |
0021b564 JM |
1374 | return; |
1375 | } | |
1376 | ||
3f76745e JM |
1377 | label = dwarf2out_cfi_label (); |
1378 | ||
07ebc930 RH |
1379 | src = find_reg_note (insn, REG_FRAME_RELATED_EXPR, NULL_RTX); |
1380 | if (src) | |
1381 | insn = XEXP (src, 0); | |
b664de3a | 1382 | else |
07ebc930 RH |
1383 | insn = PATTERN (insn); |
1384 | ||
b664de3a | 1385 | dwarf2out_frame_debug_expr (insn, label); |
3f76745e JM |
1386 | } |
1387 | ||
1388 | /* Return the size of an unsigned LEB128 quantity. */ | |
1389 | ||
1390 | static inline unsigned long | |
1391 | size_of_uleb128 (value) | |
1392 | register unsigned long value; | |
1393 | { | |
1394 | register unsigned long size = 0; | |
1395 | register unsigned byte; | |
1396 | ||
1397 | do | |
1398 | { | |
1399 | byte = (value & 0x7f); | |
1400 | value >>= 7; | |
1401 | size += 1; | |
1402 | } | |
1403 | while (value != 0); | |
1404 | ||
1405 | return size; | |
1406 | } | |
1407 | ||
1408 | /* Return the size of a signed LEB128 quantity. */ | |
1409 | ||
1410 | static inline unsigned long | |
1411 | size_of_sleb128 (value) | |
1412 | register long value; | |
1413 | { | |
1414 | register unsigned long size = 0; | |
1415 | register unsigned byte; | |
1416 | ||
1417 | do | |
1418 | { | |
1419 | byte = (value & 0x7f); | |
1420 | value >>= 7; | |
1421 | size += 1; | |
1422 | } | |
1423 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
1424 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1425 | ||
1426 | return size; | |
1427 | } | |
1428 | ||
3f76745e JM |
1429 | /* Output an unsigned LEB128 quantity. */ |
1430 | ||
1431 | static void | |
1432 | output_uleb128 (value) | |
1433 | register unsigned long value; | |
1434 | { | |
1435 | unsigned long save_value = value; | |
1436 | ||
1437 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
1438 | do | |
1439 | { | |
1440 | register unsigned byte = (value & 0x7f); | |
1441 | value >>= 7; | |
1442 | if (value != 0) | |
1443 | /* More bytes to follow. */ | |
1444 | byte |= 0x80; | |
1445 | ||
1446 | fprintf (asm_out_file, "0x%x", byte); | |
1447 | if (value != 0) | |
1448 | fprintf (asm_out_file, ","); | |
1449 | } | |
1450 | while (value != 0); | |
1451 | ||
c5cec899 | 1452 | if (flag_debug_asm) |
2d8b0f3a | 1453 | fprintf (asm_out_file, "\t%s ULEB128 0x%lx", ASM_COMMENT_START, save_value); |
3f76745e JM |
1454 | } |
1455 | ||
1456 | /* Output an signed LEB128 quantity. */ | |
1457 | ||
1458 | static void | |
1459 | output_sleb128 (value) | |
1460 | register long value; | |
1461 | { | |
1462 | register int more; | |
1463 | register unsigned byte; | |
1464 | long save_value = value; | |
1465 | ||
1466 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
1467 | do | |
1468 | { | |
1469 | byte = (value & 0x7f); | |
1470 | /* arithmetic shift */ | |
1471 | value >>= 7; | |
1472 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
1473 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1474 | if (more) | |
1475 | byte |= 0x80; | |
1476 | ||
1477 | fprintf (asm_out_file, "0x%x", byte); | |
1478 | if (more) | |
1479 | fprintf (asm_out_file, ","); | |
1480 | } | |
1481 | ||
1482 | while (more); | |
c5cec899 | 1483 | if (flag_debug_asm) |
2d8b0f3a | 1484 | fprintf (asm_out_file, "\t%s SLEB128 %ld", ASM_COMMENT_START, save_value); |
3f76745e JM |
1485 | } |
1486 | ||
1487 | /* Output a Call Frame Information opcode and its operand(s). */ | |
1488 | ||
1489 | static void | |
1490 | output_cfi (cfi, fde) | |
1491 | register dw_cfi_ref cfi; | |
1492 | register dw_fde_ref fde; | |
1493 | { | |
1494 | if (cfi->dw_cfi_opc == DW_CFA_advance_loc) | |
1495 | { | |
1496 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1497 | cfi->dw_cfi_opc | |
1498 | | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)); | |
c5cec899 | 1499 | if (flag_debug_asm) |
2d8b0f3a | 1500 | fprintf (asm_out_file, "\t%s DW_CFA_advance_loc 0x%lx", |
3f76745e JM |
1501 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_offset); |
1502 | fputc ('\n', asm_out_file); | |
1503 | } | |
1504 | ||
1505 | else if (cfi->dw_cfi_opc == DW_CFA_offset) | |
1506 | { | |
1507 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1508 | cfi->dw_cfi_opc | |
1509 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1510 | if (flag_debug_asm) |
2d8b0f3a | 1511 | fprintf (asm_out_file, "\t%s DW_CFA_offset, column 0x%lx", |
3f76745e JM |
1512 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); |
1513 | ||
1514 | fputc ('\n', asm_out_file); | |
1515 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1516 | fputc ('\n', asm_out_file); | |
1517 | } | |
1518 | else if (cfi->dw_cfi_opc == DW_CFA_restore) | |
1519 | { | |
1520 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1521 | cfi->dw_cfi_opc | |
1522 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1523 | if (flag_debug_asm) |
2d8b0f3a | 1524 | fprintf (asm_out_file, "\t%s DW_CFA_restore, column 0x%lx", |
3f76745e JM |
1525 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); |
1526 | ||
1527 | fputc ('\n', asm_out_file); | |
1528 | } | |
1529 | else | |
1530 | { | |
1531 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, cfi->dw_cfi_opc); | |
c5cec899 | 1532 | if (flag_debug_asm) |
3f76745e JM |
1533 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
1534 | dwarf_cfi_name (cfi->dw_cfi_opc)); | |
1535 | ||
1536 | fputc ('\n', asm_out_file); | |
1537 | switch (cfi->dw_cfi_opc) | |
1538 | { | |
1539 | case DW_CFA_set_loc: | |
1540 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, cfi->dw_cfi_oprnd1.dw_cfi_addr); | |
1541 | fputc ('\n', asm_out_file); | |
1542 | break; | |
1543 | case DW_CFA_advance_loc1: | |
bb727b5a JM |
1544 | ASM_OUTPUT_DWARF_DELTA1 (asm_out_file, |
1545 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1546 | fde->dw_fde_current_label); | |
1547 | fputc ('\n', asm_out_file); | |
1548 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
3f76745e JM |
1549 | break; |
1550 | case DW_CFA_advance_loc2: | |
1551 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, | |
1552 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1553 | fde->dw_fde_current_label); | |
1554 | fputc ('\n', asm_out_file); | |
1555 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1556 | break; | |
1557 | case DW_CFA_advance_loc4: | |
1558 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, | |
1559 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1560 | fde->dw_fde_current_label); | |
1561 | fputc ('\n', asm_out_file); | |
1562 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1563 | break; | |
1564 | #ifdef MIPS_DEBUGGING_INFO | |
1565 | case DW_CFA_MIPS_advance_loc8: | |
1566 | /* TODO: not currently implemented. */ | |
1567 | abort (); | |
1568 | break; | |
1569 | #endif | |
1570 | case DW_CFA_offset_extended: | |
1571 | case DW_CFA_def_cfa: | |
1572 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1573 | fputc ('\n', asm_out_file); | |
1574 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1575 | fputc ('\n', asm_out_file); | |
1576 | break; | |
1577 | case DW_CFA_restore_extended: | |
1578 | case DW_CFA_undefined: | |
1579 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1580 | fputc ('\n', asm_out_file); | |
1581 | break; | |
1582 | case DW_CFA_same_value: | |
1583 | case DW_CFA_def_cfa_register: | |
1584 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1585 | fputc ('\n', asm_out_file); | |
1586 | break; | |
1587 | case DW_CFA_register: | |
1588 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1589 | fputc ('\n', asm_out_file); | |
1590 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_reg_num); | |
1591 | fputc ('\n', asm_out_file); | |
1592 | break; | |
1593 | case DW_CFA_def_cfa_offset: | |
1594 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1595 | fputc ('\n', asm_out_file); | |
1596 | break; | |
c53aa195 JM |
1597 | case DW_CFA_GNU_window_save: |
1598 | break; | |
0021b564 JM |
1599 | case DW_CFA_GNU_args_size: |
1600 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1601 | fputc ('\n', asm_out_file); | |
1602 | break; | |
3f76745e JM |
1603 | default: |
1604 | break; | |
1605 | } | |
1606 | } | |
1607 | } | |
1608 | ||
1609 | /* Output the call frame information used to used to record information | |
1610 | that relates to calculating the frame pointer, and records the | |
1611 | location of saved registers. */ | |
1612 | ||
1613 | static void | |
1614 | output_call_frame_info (for_eh) | |
1615 | int for_eh; | |
1616 | { | |
2d8b0f3a | 1617 | register unsigned long i; |
3f76745e | 1618 | register dw_fde_ref fde; |
3f76745e | 1619 | register dw_cfi_ref cfi; |
a6ab3aad | 1620 | char l1[20], l2[20]; |
2ed2af28 PDM |
1621 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1622 | char ld[20]; | |
1623 | #endif | |
a6ab3aad JM |
1624 | |
1625 | /* Do we want to include a pointer to the exception table? */ | |
1626 | int eh_ptr = for_eh && exception_table_p (); | |
3f76745e | 1627 | |
3f76745e | 1628 | fputc ('\n', asm_out_file); |
e9e30253 | 1629 | |
aa0c1401 JL |
1630 | /* We're going to be generating comments, so turn on app. */ |
1631 | if (flag_debug_asm) | |
1632 | app_enable (); | |
956d6950 | 1633 | |
3f76745e JM |
1634 | if (for_eh) |
1635 | { | |
1636 | #ifdef EH_FRAME_SECTION | |
0021b564 | 1637 | EH_FRAME_SECTION (); |
3f76745e | 1638 | #else |
496651db | 1639 | tree label = get_file_function_name ('F'); |
0021b564 | 1640 | |
3167de5b | 1641 | force_data_section (); |
f4744807 | 1642 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); |
0021b564 JM |
1643 | ASM_GLOBALIZE_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); |
1644 | ASM_OUTPUT_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); | |
3f76745e JM |
1645 | #endif |
1646 | assemble_label ("__FRAME_BEGIN__"); | |
1647 | } | |
1648 | else | |
1649 | ASM_OUTPUT_SECTION (asm_out_file, FRAME_SECTION); | |
1650 | ||
1651 | /* Output the CIE. */ | |
a6ab3aad JM |
1652 | ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh); |
1653 | ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh); | |
2ed2af28 PDM |
1654 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1655 | ASM_GENERATE_INTERNAL_LABEL (ld, CIE_LENGTH_LABEL, for_eh); | |
1656 | if (for_eh) | |
7bb9fb0e | 1657 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1658 | else |
1659 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1660 | #else | |
267c09ab JM |
1661 | if (for_eh) |
1662 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1663 | else | |
1664 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1665 | #endif |
c5cec899 | 1666 | if (flag_debug_asm) |
3f76745e JM |
1667 | fprintf (asm_out_file, "\t%s Length of Common Information Entry", |
1668 | ASM_COMMENT_START); | |
1669 | ||
1670 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1671 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1672 | ||
d84e64d4 JM |
1673 | if (for_eh) |
1674 | /* Now that the CIE pointer is PC-relative for EH, | |
1675 | use 0 to identify the CIE. */ | |
1676 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); | |
1677 | else | |
1678 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1679 | ||
c5cec899 | 1680 | if (flag_debug_asm) |
3f76745e JM |
1681 | fprintf (asm_out_file, "\t%s CIE Identifier Tag", ASM_COMMENT_START); |
1682 | ||
1683 | fputc ('\n', asm_out_file); | |
d84e64d4 | 1684 | if (! for_eh && DWARF_OFFSET_SIZE == 8) |
3f76745e JM |
1685 | { |
1686 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1687 | fputc ('\n', asm_out_file); | |
1688 | } | |
1689 | ||
1690 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_CIE_VERSION); | |
c5cec899 | 1691 | if (flag_debug_asm) |
3f76745e JM |
1692 | fprintf (asm_out_file, "\t%s CIE Version", ASM_COMMENT_START); |
1693 | ||
1694 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1695 | if (eh_ptr) |
1696 | { | |
d84e64d4 JM |
1697 | /* The CIE contains a pointer to the exception region info for the |
1698 | frame. Make the augmentation string three bytes (including the | |
1699 | trailing null) so the pointer is 4-byte aligned. The Solaris ld | |
1700 | can't handle unaligned relocs. */ | |
c5cec899 | 1701 | if (flag_debug_asm) |
8d4e65a6 JL |
1702 | { |
1703 | ASM_OUTPUT_DWARF_STRING (asm_out_file, "eh"); | |
1704 | fprintf (asm_out_file, "\t%s CIE Augmentation", ASM_COMMENT_START); | |
1705 | } | |
1706 | else | |
1707 | { | |
c2c85462 | 1708 | ASM_OUTPUT_ASCII (asm_out_file, "eh", 3); |
8d4e65a6 | 1709 | } |
d84e64d4 JM |
1710 | fputc ('\n', asm_out_file); |
1711 | ||
1712 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, "__EXCEPTION_TABLE__"); | |
1713 | if (flag_debug_asm) | |
1714 | fprintf (asm_out_file, "\t%s pointer to exception region info", | |
1715 | ASM_COMMENT_START); | |
a6ab3aad JM |
1716 | } |
1717 | else | |
1718 | { | |
1719 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 1720 | if (flag_debug_asm) |
a6ab3aad JM |
1721 | fprintf (asm_out_file, "\t%s CIE Augmentation (none)", |
1722 | ASM_COMMENT_START); | |
1723 | } | |
3f76745e JM |
1724 | |
1725 | fputc ('\n', asm_out_file); | |
1726 | output_uleb128 (1); | |
c5cec899 | 1727 | if (flag_debug_asm) |
3f76745e JM |
1728 | fprintf (asm_out_file, " (CIE Code Alignment Factor)"); |
1729 | ||
1730 | fputc ('\n', asm_out_file); | |
1731 | output_sleb128 (DWARF_CIE_DATA_ALIGNMENT); | |
c5cec899 | 1732 | if (flag_debug_asm) |
3f76745e JM |
1733 | fprintf (asm_out_file, " (CIE Data Alignment Factor)"); |
1734 | ||
1735 | fputc ('\n', asm_out_file); | |
1736 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_FRAME_RETURN_COLUMN); | |
c5cec899 | 1737 | if (flag_debug_asm) |
3f76745e JM |
1738 | fprintf (asm_out_file, "\t%s CIE RA Column", ASM_COMMENT_START); |
1739 | ||
1740 | fputc ('\n', asm_out_file); | |
1741 | ||
1742 | for (cfi = cie_cfi_head; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1743 | output_cfi (cfi, NULL); | |
1744 | ||
1745 | /* Pad the CIE out to an address sized boundary. */ | |
a6ab3aad JM |
1746 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); |
1747 | ASM_OUTPUT_LABEL (asm_out_file, l2); | |
2ed2af28 PDM |
1748 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1749 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1750 | if (flag_debug_asm) |
1751 | fprintf (asm_out_file, "\t%s CIE Length Symbol", ASM_COMMENT_START); | |
1752 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1753 | #endif |
3f76745e JM |
1754 | |
1755 | /* Loop through all of the FDE's. */ | |
1756 | for (i = 0; i < fde_table_in_use; ++i) | |
1757 | { | |
1758 | fde = &fde_table[i]; | |
3f76745e | 1759 | |
a6ab3aad JM |
1760 | ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i*2); |
1761 | ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i*2); | |
2ed2af28 PDM |
1762 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1763 | ASM_GENERATE_INTERNAL_LABEL (ld, FDE_LENGTH_LABEL, for_eh + i*2); | |
1764 | if (for_eh) | |
7bb9fb0e | 1765 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1766 | else |
1767 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1768 | #else | |
267c09ab JM |
1769 | if (for_eh) |
1770 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1771 | else | |
1772 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1773 | #endif |
c5cec899 | 1774 | if (flag_debug_asm) |
3f76745e | 1775 | fprintf (asm_out_file, "\t%s FDE Length", ASM_COMMENT_START); |
3f76745e | 1776 | fputc ('\n', asm_out_file); |
a6ab3aad JM |
1777 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1778 | ||
eef906d6 JW |
1779 | /* ??? This always emits a 4 byte offset when for_eh is true, but it |
1780 | emits a target dependent sized offset when for_eh is not true. | |
1781 | This inconsistency may confuse gdb. The only case where we need a | |
1782 | non-4 byte offset is for the Irix6 N64 ABI, so we may lose SGI | |
1783 | compatibility if we emit a 4 byte offset. We need a 4 byte offset | |
1784 | though in order to be compatible with the dwarf_fde struct in frame.c. | |
1785 | If the for_eh case is changed, then the struct in frame.c has | |
1786 | to be adjusted appropriately. */ | |
3f76745e | 1787 | if (for_eh) |
21af493b | 1788 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l1, "__FRAME_BEGIN__"); |
3f76745e JM |
1789 | else |
1790 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (FRAME_SECTION)); | |
c5cec899 | 1791 | if (flag_debug_asm) |
3f76745e JM |
1792 | fprintf (asm_out_file, "\t%s FDE CIE offset", ASM_COMMENT_START); |
1793 | ||
1794 | fputc ('\n', asm_out_file); | |
1795 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, fde->dw_fde_begin); | |
c5cec899 | 1796 | if (flag_debug_asm) |
3f76745e JM |
1797 | fprintf (asm_out_file, "\t%s FDE initial location", ASM_COMMENT_START); |
1798 | ||
1799 | fputc ('\n', asm_out_file); | |
1800 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, | |
1801 | fde->dw_fde_end, fde->dw_fde_begin); | |
c5cec899 | 1802 | if (flag_debug_asm) |
3f76745e JM |
1803 | fprintf (asm_out_file, "\t%s FDE address range", ASM_COMMENT_START); |
1804 | ||
1805 | fputc ('\n', asm_out_file); | |
1806 | ||
1807 | /* Loop through the Call Frame Instructions associated with | |
1808 | this FDE. */ | |
1809 | fde->dw_fde_current_label = fde->dw_fde_begin; | |
1810 | for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1811 | output_cfi (cfi, fde); | |
1812 | ||
a6ab3aad JM |
1813 | /* Pad the FDE out to an address sized boundary. */ |
1814 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); | |
1815 | ASM_OUTPUT_LABEL (asm_out_file, l2); | |
2ed2af28 PDM |
1816 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1817 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1818 | if (flag_debug_asm) |
1819 | fprintf (asm_out_file, "\t%s FDE Length Symbol", ASM_COMMENT_START); | |
1820 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1821 | #endif |
3f76745e JM |
1822 | } |
1823 | #ifndef EH_FRAME_SECTION | |
1824 | if (for_eh) | |
1825 | { | |
1826 | /* Emit terminating zero for table. */ | |
267c09ab | 1827 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); |
3f76745e JM |
1828 | fputc ('\n', asm_out_file); |
1829 | } | |
1830 | #endif | |
a6ab3aad JM |
1831 | #ifdef MIPS_DEBUGGING_INFO |
1832 | /* Work around Irix 6 assembler bug whereby labels at the end of a section | |
1833 | get a value of 0. Putting .align 0 after the label fixes it. */ | |
1834 | ASM_OUTPUT_ALIGN (asm_out_file, 0); | |
1835 | #endif | |
aa0c1401 JL |
1836 | |
1837 | /* Turn off app to make assembly quicker. */ | |
1838 | if (flag_debug_asm) | |
1839 | app_disable (); | |
a6ab3aad JM |
1840 | } |
1841 | ||
3f76745e JM |
1842 | /* Output a marker (i.e. a label) for the beginning of a function, before |
1843 | the prologue. */ | |
1844 | ||
1845 | void | |
1846 | dwarf2out_begin_prologue () | |
1847 | { | |
1848 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
1849 | register dw_fde_ref fde; | |
1850 | ||
4f988ea2 JM |
1851 | ++current_funcdef_number; |
1852 | ||
3f76745e JM |
1853 | function_section (current_function_decl); |
1854 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL, | |
1855 | current_funcdef_number); | |
1856 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
1857 | ||
1858 | /* Expand the fde table if necessary. */ | |
1859 | if (fde_table_in_use == fde_table_allocated) | |
1860 | { | |
1861 | fde_table_allocated += FDE_TABLE_INCREMENT; | |
1862 | fde_table | |
1863 | = (dw_fde_ref) xrealloc (fde_table, | |
1864 | fde_table_allocated * sizeof (dw_fde_node)); | |
a3f97cbb | 1865 | } |
3f76745e JM |
1866 | |
1867 | /* Record the FDE associated with this function. */ | |
1868 | current_funcdef_fde = fde_table_in_use; | |
1869 | ||
1870 | /* Add the new FDE at the end of the fde_table. */ | |
1871 | fde = &fde_table[fde_table_in_use++]; | |
1872 | fde->dw_fde_begin = xstrdup (label); | |
1873 | fde->dw_fde_current_label = NULL; | |
1874 | fde->dw_fde_end = NULL; | |
1875 | fde->dw_fde_cfi = NULL; | |
0021b564 | 1876 | |
b57d9225 | 1877 | args_size = old_args_size = 0; |
3f76745e JM |
1878 | } |
1879 | ||
1880 | /* Output a marker (i.e. a label) for the absolute end of the generated code | |
1881 | for a function definition. This gets called *after* the epilogue code has | |
1882 | been generated. */ | |
1883 | ||
1884 | void | |
1885 | dwarf2out_end_epilogue () | |
1886 | { | |
1887 | dw_fde_ref fde; | |
1888 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
1889 | ||
1890 | /* Output a label to mark the endpoint of the code generated for this | |
1891 | function. */ | |
1892 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_END_LABEL, current_funcdef_number); | |
1893 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
1894 | fde = &fde_table[fde_table_in_use - 1]; | |
1895 | fde->dw_fde_end = xstrdup (label); | |
3f76745e JM |
1896 | } |
1897 | ||
1898 | void | |
1899 | dwarf2out_frame_init () | |
1900 | { | |
1901 | /* Allocate the initial hunk of the fde_table. */ | |
3de90026 | 1902 | fde_table = (dw_fde_ref) xcalloc (FDE_TABLE_INCREMENT, sizeof (dw_fde_node)); |
3f76745e JM |
1903 | fde_table_allocated = FDE_TABLE_INCREMENT; |
1904 | fde_table_in_use = 0; | |
1905 | ||
1906 | /* Generate the CFA instructions common to all FDE's. Do it now for the | |
1907 | sake of lookup_cfa. */ | |
1908 | ||
a6ab3aad | 1909 | #ifdef DWARF2_UNWIND_INFO |
91193900 AS |
1910 | /* On entry, the Canonical Frame Address is at SP. */ |
1911 | dwarf2out_def_cfa (NULL, STACK_POINTER_REGNUM, INCOMING_FRAME_SP_OFFSET); | |
1912 | initial_return_save (INCOMING_RETURN_ADDR_RTX); | |
3f76745e JM |
1913 | #endif |
1914 | } | |
1915 | ||
1916 | void | |
1917 | dwarf2out_frame_finish () | |
1918 | { | |
3f76745e | 1919 | /* Output call frame information. */ |
a6ab3aad | 1920 | #ifdef MIPS_DEBUGGING_INFO |
3f76745e JM |
1921 | if (write_symbols == DWARF2_DEBUG) |
1922 | output_call_frame_info (0); | |
14a774a9 | 1923 | if (flag_unwind_tables || (flag_exceptions && ! exceptions_via_longjmp)) |
3f76745e | 1924 | output_call_frame_info (1); |
a6ab3aad JM |
1925 | #else |
1926 | if (write_symbols == DWARF2_DEBUG | |
14a774a9 | 1927 | || flag_unwind_tables || (flag_exceptions && ! exceptions_via_longjmp)) |
a6ab3aad JM |
1928 | output_call_frame_info (1); |
1929 | #endif | |
3f76745e JM |
1930 | } |
1931 | ||
1932 | #endif /* .debug_frame support */ | |
1933 | ||
1934 | /* And now, the support for symbolic debugging information. */ | |
1935 | #ifdef DWARF2_DEBUGGING_INFO | |
1936 | ||
3f76745e JM |
1937 | /* NOTE: In the comments in this file, many references are made to |
1938 | "Debugging Information Entries". This term is abbreviated as `DIE' | |
1939 | throughout the remainder of this file. */ | |
1940 | ||
1941 | /* An internal representation of the DWARF output is built, and then | |
1942 | walked to generate the DWARF debugging info. The walk of the internal | |
1943 | representation is done after the entire program has been compiled. | |
1944 | The types below are used to describe the internal representation. */ | |
1945 | ||
1946 | /* Each DIE may have a series of attribute/value pairs. Values | |
1947 | can take on several forms. The forms that are used in this | |
1948 | implementation are listed below. */ | |
1949 | ||
1950 | typedef enum | |
1951 | { | |
1952 | dw_val_class_addr, | |
1953 | dw_val_class_loc, | |
1954 | dw_val_class_const, | |
1955 | dw_val_class_unsigned_const, | |
1956 | dw_val_class_long_long, | |
1957 | dw_val_class_float, | |
1958 | dw_val_class_flag, | |
1959 | dw_val_class_die_ref, | |
1960 | dw_val_class_fde_ref, | |
1961 | dw_val_class_lbl_id, | |
8b790721 | 1962 | dw_val_class_lbl_offset, |
3f76745e | 1963 | dw_val_class_str |
a3f97cbb | 1964 | } |
3f76745e | 1965 | dw_val_class; |
a3f97cbb | 1966 | |
3f76745e JM |
1967 | /* Various DIE's use offsets relative to the beginning of the |
1968 | .debug_info section to refer to each other. */ | |
71dfc51f | 1969 | |
3f76745e JM |
1970 | typedef long int dw_offset; |
1971 | ||
1972 | /* Define typedefs here to avoid circular dependencies. */ | |
1973 | ||
1974 | typedef struct die_struct *dw_die_ref; | |
1975 | typedef struct dw_attr_struct *dw_attr_ref; | |
1976 | typedef struct dw_val_struct *dw_val_ref; | |
1977 | typedef struct dw_line_info_struct *dw_line_info_ref; | |
1978 | typedef struct dw_separate_line_info_struct *dw_separate_line_info_ref; | |
1979 | typedef struct dw_loc_descr_struct *dw_loc_descr_ref; | |
1980 | typedef struct pubname_struct *pubname_ref; | |
1981 | typedef dw_die_ref *arange_ref; | |
1982 | ||
1983 | /* Describe a double word constant value. */ | |
1984 | ||
1985 | typedef struct dw_long_long_struct | |
a3f97cbb | 1986 | { |
3f76745e JM |
1987 | unsigned long hi; |
1988 | unsigned long low; | |
1989 | } | |
1990 | dw_long_long_const; | |
1991 | ||
1992 | /* Describe a floating point constant value. */ | |
1993 | ||
1994 | typedef struct dw_fp_struct | |
1995 | { | |
1996 | long *array; | |
1997 | unsigned length; | |
1998 | } | |
1999 | dw_float_const; | |
2000 | ||
2001 | /* Each entry in the line_info_table maintains the file and | |
956d6950 | 2002 | line number associated with the label generated for that |
3f76745e JM |
2003 | entry. The label gives the PC value associated with |
2004 | the line number entry. */ | |
2005 | ||
2006 | typedef struct dw_line_info_struct | |
2007 | { | |
2008 | unsigned long dw_file_num; | |
2009 | unsigned long dw_line_num; | |
2010 | } | |
2011 | dw_line_info_entry; | |
2012 | ||
2013 | /* Line information for functions in separate sections; each one gets its | |
2014 | own sequence. */ | |
2015 | typedef struct dw_separate_line_info_struct | |
2016 | { | |
2017 | unsigned long dw_file_num; | |
2018 | unsigned long dw_line_num; | |
2019 | unsigned long function; | |
2020 | } | |
2021 | dw_separate_line_info_entry; | |
2022 | ||
956d6950 | 2023 | /* The dw_val_node describes an attribute's value, as it is |
3f76745e JM |
2024 | represented internally. */ |
2025 | ||
2026 | typedef struct dw_val_struct | |
2027 | { | |
2028 | dw_val_class val_class; | |
2029 | union | |
a3f97cbb | 2030 | { |
3f76745e JM |
2031 | char *val_addr; |
2032 | dw_loc_descr_ref val_loc; | |
2033 | long int val_int; | |
2034 | long unsigned val_unsigned; | |
2035 | dw_long_long_const val_long_long; | |
2036 | dw_float_const val_float; | |
2037 | dw_die_ref val_die_ref; | |
2038 | unsigned val_fde_index; | |
2039 | char *val_str; | |
2040 | char *val_lbl_id; | |
3f76745e | 2041 | unsigned char val_flag; |
a3f97cbb | 2042 | } |
3f76745e JM |
2043 | v; |
2044 | } | |
2045 | dw_val_node; | |
2046 | ||
2047 | /* Locations in memory are described using a sequence of stack machine | |
2048 | operations. */ | |
2049 | ||
2050 | typedef struct dw_loc_descr_struct | |
2051 | { | |
2052 | dw_loc_descr_ref dw_loc_next; | |
2053 | enum dwarf_location_atom dw_loc_opc; | |
2054 | dw_val_node dw_loc_oprnd1; | |
2055 | dw_val_node dw_loc_oprnd2; | |
2056 | } | |
2057 | dw_loc_descr_node; | |
2058 | ||
2059 | /* Each DIE attribute has a field specifying the attribute kind, | |
2060 | a link to the next attribute in the chain, and an attribute value. | |
2061 | Attributes are typically linked below the DIE they modify. */ | |
2062 | ||
2063 | typedef struct dw_attr_struct | |
2064 | { | |
2065 | enum dwarf_attribute dw_attr; | |
2066 | dw_attr_ref dw_attr_next; | |
2067 | dw_val_node dw_attr_val; | |
2068 | } | |
2069 | dw_attr_node; | |
2070 | ||
2071 | /* The Debugging Information Entry (DIE) structure */ | |
2072 | ||
2073 | typedef struct die_struct | |
2074 | { | |
2075 | enum dwarf_tag die_tag; | |
2076 | dw_attr_ref die_attr; | |
3f76745e JM |
2077 | dw_die_ref die_parent; |
2078 | dw_die_ref die_child; | |
3f76745e JM |
2079 | dw_die_ref die_sib; |
2080 | dw_offset die_offset; | |
2081 | unsigned long die_abbrev; | |
a3f97cbb | 2082 | } |
3f76745e JM |
2083 | die_node; |
2084 | ||
2085 | /* The pubname structure */ | |
2086 | ||
2087 | typedef struct pubname_struct | |
2088 | { | |
2089 | dw_die_ref die; | |
2090 | char * name; | |
2091 | } | |
2092 | pubname_entry; | |
2093 | ||
ef76d03b JW |
2094 | /* The limbo die list structure. */ |
2095 | typedef struct limbo_die_struct | |
2096 | { | |
2097 | dw_die_ref die; | |
2098 | struct limbo_die_struct *next; | |
2099 | } | |
2100 | limbo_die_node; | |
2101 | ||
3f76745e JM |
2102 | /* How to start an assembler comment. */ |
2103 | #ifndef ASM_COMMENT_START | |
2104 | #define ASM_COMMENT_START ";#" | |
2105 | #endif | |
2106 | ||
2107 | /* Define a macro which returns non-zero for a TYPE_DECL which was | |
2108 | implicitly generated for a tagged type. | |
2109 | ||
2110 | Note that unlike the gcc front end (which generates a NULL named | |
2111 | TYPE_DECL node for each complete tagged type, each array type, and | |
2112 | each function type node created) the g++ front end generates a | |
2113 | _named_ TYPE_DECL node for each tagged type node created. | |
2114 | These TYPE_DECLs have DECL_ARTIFICIAL set, so we know not to | |
2115 | generate a DW_TAG_typedef DIE for them. */ | |
2116 | ||
2117 | #define TYPE_DECL_IS_STUB(decl) \ | |
2118 | (DECL_NAME (decl) == NULL_TREE \ | |
2119 | || (DECL_ARTIFICIAL (decl) \ | |
2120 | && is_tagged_type (TREE_TYPE (decl)) \ | |
ef76d03b JW |
2121 | && ((decl == TYPE_STUB_DECL (TREE_TYPE (decl))) \ |
2122 | /* This is necessary for stub decls that \ | |
2123 | appear in nested inline functions. */ \ | |
2124 | || (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE \ | |
2125 | && (decl_ultimate_origin (decl) \ | |
2126 | == TYPE_STUB_DECL (TREE_TYPE (decl))))))) | |
3f76745e JM |
2127 | |
2128 | /* Information concerning the compilation unit's programming | |
2129 | language, and compiler version. */ | |
2130 | ||
2131 | extern int flag_traditional; | |
2132 | extern char *version_string; | |
3f76745e JM |
2133 | |
2134 | /* Fixed size portion of the DWARF compilation unit header. */ | |
2135 | #define DWARF_COMPILE_UNIT_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 3) | |
2136 | ||
2137 | /* Fixed size portion of debugging line information prolog. */ | |
2138 | #define DWARF_LINE_PROLOG_HEADER_SIZE 5 | |
2139 | ||
2140 | /* Fixed size portion of public names info. */ | |
2141 | #define DWARF_PUBNAMES_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2) | |
2142 | ||
2143 | /* Fixed size portion of the address range info. */ | |
2144 | #define DWARF_ARANGES_HEADER_SIZE \ | |
2145 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, PTR_SIZE * 2) - DWARF_OFFSET_SIZE) | |
2146 | ||
b2244e22 JW |
2147 | /* The default is to have gcc emit the line number tables. */ |
2148 | #ifndef DWARF2_ASM_LINE_DEBUG_INFO | |
2149 | #define DWARF2_ASM_LINE_DEBUG_INFO 0 | |
2150 | #endif | |
2151 | ||
3f76745e JM |
2152 | /* Define the architecture-dependent minimum instruction length (in bytes). |
2153 | In this implementation of DWARF, this field is used for information | |
2154 | purposes only. Since GCC generates assembly language, we have | |
2155 | no a priori knowledge of how many instruction bytes are generated | |
2156 | for each source line, and therefore can use only the DW_LNE_set_address | |
2157 | and DW_LNS_fixed_advance_pc line information commands. */ | |
2158 | ||
2159 | #ifndef DWARF_LINE_MIN_INSTR_LENGTH | |
2160 | #define DWARF_LINE_MIN_INSTR_LENGTH 4 | |
2161 | #endif | |
2162 | ||
2163 | /* Minimum line offset in a special line info. opcode. | |
2164 | This value was chosen to give a reasonable range of values. */ | |
2165 | #define DWARF_LINE_BASE -10 | |
2166 | ||
2167 | /* First special line opcde - leave room for the standard opcodes. */ | |
2168 | #define DWARF_LINE_OPCODE_BASE 10 | |
2169 | ||
2170 | /* Range of line offsets in a special line info. opcode. */ | |
2171 | #define DWARF_LINE_RANGE (254-DWARF_LINE_OPCODE_BASE+1) | |
2172 | ||
2173 | /* Flag that indicates the initial value of the is_stmt_start flag. | |
2174 | In the present implementation, we do not mark any lines as | |
2175 | the beginning of a source statement, because that information | |
2176 | is not made available by the GCC front-end. */ | |
2177 | #define DWARF_LINE_DEFAULT_IS_STMT_START 1 | |
2178 | ||
2179 | /* This location is used by calc_die_sizes() to keep track | |
2180 | the offset of each DIE within the .debug_info section. */ | |
2181 | static unsigned long next_die_offset; | |
2182 | ||
2183 | /* Record the root of the DIE's built for the current compilation unit. */ | |
2184 | static dw_die_ref comp_unit_die; | |
2185 | ||
ef76d03b JW |
2186 | /* A list of DIEs with a NULL parent waiting to be relocated. */ |
2187 | static limbo_die_node *limbo_die_list = 0; | |
3f76745e JM |
2188 | |
2189 | /* Pointer to an array of filenames referenced by this compilation unit. */ | |
2190 | static char **file_table; | |
2191 | ||
2192 | /* Total number of entries in the table (i.e. array) pointed to by | |
2193 | `file_table'. This is the *total* and includes both used and unused | |
2194 | slots. */ | |
2195 | static unsigned file_table_allocated; | |
a3f97cbb | 2196 | |
3f76745e JM |
2197 | /* Number of entries in the file_table which are actually in use. */ |
2198 | static unsigned file_table_in_use; | |
71dfc51f | 2199 | |
3f76745e JM |
2200 | /* Size (in elements) of increments by which we may expand the filename |
2201 | table. */ | |
2202 | #define FILE_TABLE_INCREMENT 64 | |
71dfc51f | 2203 | |
3f76745e JM |
2204 | /* Local pointer to the name of the main input file. Initialized in |
2205 | dwarf2out_init. */ | |
2206 | static char *primary_filename; | |
a3f97cbb | 2207 | |
3f76745e JM |
2208 | /* For Dwarf output, we must assign lexical-blocks id numbers in the order in |
2209 | which their beginnings are encountered. We output Dwarf debugging info | |
2210 | that refers to the beginnings and ends of the ranges of code for each | |
2211 | lexical block. The labels themselves are generated in final.c, which | |
2212 | assigns numbers to the blocks in the same way. */ | |
2213 | static unsigned next_block_number = 2; | |
a3f97cbb | 2214 | |
3f76745e JM |
2215 | /* A pointer to the base of a table of references to DIE's that describe |
2216 | declarations. The table is indexed by DECL_UID() which is a unique | |
956d6950 | 2217 | number identifying each decl. */ |
3f76745e | 2218 | static dw_die_ref *decl_die_table; |
71dfc51f | 2219 | |
3f76745e JM |
2220 | /* Number of elements currently allocated for the decl_die_table. */ |
2221 | static unsigned decl_die_table_allocated; | |
a3f97cbb | 2222 | |
3f76745e JM |
2223 | /* Number of elements in decl_die_table currently in use. */ |
2224 | static unsigned decl_die_table_in_use; | |
71dfc51f | 2225 | |
3f76745e JM |
2226 | /* Size (in elements) of increments by which we may expand the |
2227 | decl_die_table. */ | |
2228 | #define DECL_DIE_TABLE_INCREMENT 256 | |
a3f97cbb | 2229 | |
e3e7774e JW |
2230 | /* Structure used for the decl_scope table. scope is the current declaration |
2231 | scope, and previous is the entry that is the parent of this scope. This | |
2232 | is usually but not always the immediately preceeding entry. */ | |
2233 | ||
2234 | typedef struct decl_scope_struct | |
2235 | { | |
2236 | tree scope; | |
2237 | int previous; | |
2238 | } | |
2239 | decl_scope_node; | |
2240 | ||
3f76745e JM |
2241 | /* A pointer to the base of a table of references to declaration |
2242 | scopes. This table is a display which tracks the nesting | |
2243 | of declaration scopes at the current scope and containing | |
2244 | scopes. This table is used to find the proper place to | |
2245 | define type declaration DIE's. */ | |
e3e7774e | 2246 | static decl_scope_node *decl_scope_table; |
a3f97cbb | 2247 | |
3f76745e | 2248 | /* Number of elements currently allocated for the decl_scope_table. */ |
e3e7774e | 2249 | static int decl_scope_table_allocated; |
71dfc51f | 2250 | |
956d6950 | 2251 | /* Current level of nesting of declaration scopes. */ |
e3e7774e | 2252 | static int decl_scope_depth; |
bdb669cb | 2253 | |
3f76745e JM |
2254 | /* Size (in elements) of increments by which we may expand the |
2255 | decl_scope_table. */ | |
2256 | #define DECL_SCOPE_TABLE_INCREMENT 64 | |
bdb669cb | 2257 | |
3f76745e JM |
2258 | /* A pointer to the base of a list of references to DIE's that |
2259 | are uniquely identified by their tag, presence/absence of | |
2260 | children DIE's, and list of attribute/value pairs. */ | |
2261 | static dw_die_ref *abbrev_die_table; | |
71dfc51f | 2262 | |
3f76745e JM |
2263 | /* Number of elements currently allocated for abbrev_die_table. */ |
2264 | static unsigned abbrev_die_table_allocated; | |
bdb669cb | 2265 | |
3f76745e JM |
2266 | /* Number of elements in type_die_table currently in use. */ |
2267 | static unsigned abbrev_die_table_in_use; | |
bdb669cb | 2268 | |
3f76745e JM |
2269 | /* Size (in elements) of increments by which we may expand the |
2270 | abbrev_die_table. */ | |
2271 | #define ABBREV_DIE_TABLE_INCREMENT 256 | |
71dfc51f | 2272 | |
3f76745e JM |
2273 | /* A pointer to the base of a table that contains line information |
2274 | for each source code line in .text in the compilation unit. */ | |
2275 | static dw_line_info_ref line_info_table; | |
a3f97cbb | 2276 | |
3f76745e JM |
2277 | /* Number of elements currently allocated for line_info_table. */ |
2278 | static unsigned line_info_table_allocated; | |
71dfc51f | 2279 | |
3f76745e JM |
2280 | /* Number of elements in separate_line_info_table currently in use. */ |
2281 | static unsigned separate_line_info_table_in_use; | |
71dfc51f | 2282 | |
3f76745e JM |
2283 | /* A pointer to the base of a table that contains line information |
2284 | for each source code line outside of .text in the compilation unit. */ | |
2285 | static dw_separate_line_info_ref separate_line_info_table; | |
a3f97cbb | 2286 | |
3f76745e JM |
2287 | /* Number of elements currently allocated for separate_line_info_table. */ |
2288 | static unsigned separate_line_info_table_allocated; | |
71dfc51f | 2289 | |
3f76745e JM |
2290 | /* Number of elements in line_info_table currently in use. */ |
2291 | static unsigned line_info_table_in_use; | |
71dfc51f | 2292 | |
3f76745e JM |
2293 | /* Size (in elements) of increments by which we may expand the |
2294 | line_info_table. */ | |
2295 | #define LINE_INFO_TABLE_INCREMENT 1024 | |
a3f97cbb | 2296 | |
3f76745e JM |
2297 | /* A pointer to the base of a table that contains a list of publicly |
2298 | accessible names. */ | |
2299 | static pubname_ref pubname_table; | |
71dfc51f | 2300 | |
3f76745e JM |
2301 | /* Number of elements currently allocated for pubname_table. */ |
2302 | static unsigned pubname_table_allocated; | |
2303 | ||
2304 | /* Number of elements in pubname_table currently in use. */ | |
2305 | static unsigned pubname_table_in_use; | |
2306 | ||
2307 | /* Size (in elements) of increments by which we may expand the | |
2308 | pubname_table. */ | |
2309 | #define PUBNAME_TABLE_INCREMENT 64 | |
2310 | ||
2311 | /* A pointer to the base of a table that contains a list of publicly | |
2312 | accessible names. */ | |
2313 | static arange_ref arange_table; | |
71dfc51f | 2314 | |
3f76745e JM |
2315 | /* Number of elements currently allocated for arange_table. */ |
2316 | static unsigned arange_table_allocated; | |
a3f97cbb | 2317 | |
3f76745e JM |
2318 | /* Number of elements in arange_table currently in use. */ |
2319 | static unsigned arange_table_in_use; | |
71dfc51f | 2320 | |
3f76745e JM |
2321 | /* Size (in elements) of increments by which we may expand the |
2322 | arange_table. */ | |
2323 | #define ARANGE_TABLE_INCREMENT 64 | |
71dfc51f | 2324 | |
3f76745e JM |
2325 | /* A pointer to the base of a list of pending types which we haven't |
2326 | generated DIEs for yet, but which we will have to come back to | |
2327 | later on. */ | |
469ac993 | 2328 | |
3f76745e | 2329 | static tree *pending_types_list; |
71dfc51f | 2330 | |
3f76745e JM |
2331 | /* Number of elements currently allocated for the pending_types_list. */ |
2332 | static unsigned pending_types_allocated; | |
71dfc51f | 2333 | |
3f76745e JM |
2334 | /* Number of elements of pending_types_list currently in use. */ |
2335 | static unsigned pending_types; | |
a3f97cbb | 2336 | |
3f76745e JM |
2337 | /* Size (in elements) of increments by which we may expand the pending |
2338 | types list. Actually, a single hunk of space of this size should | |
2339 | be enough for most typical programs. */ | |
2340 | #define PENDING_TYPES_INCREMENT 64 | |
71dfc51f | 2341 | |
8a8c3656 JM |
2342 | /* A pointer to the base of a list of incomplete types which might be |
2343 | completed at some later time. */ | |
2344 | ||
2345 | static tree *incomplete_types_list; | |
2346 | ||
2347 | /* Number of elements currently allocated for the incomplete_types_list. */ | |
2348 | static unsigned incomplete_types_allocated; | |
2349 | ||
2350 | /* Number of elements of incomplete_types_list currently in use. */ | |
2351 | static unsigned incomplete_types; | |
2352 | ||
2353 | /* Size (in elements) of increments by which we may expand the incomplete | |
2354 | types list. Actually, a single hunk of space of this size should | |
2355 | be enough for most typical programs. */ | |
2356 | #define INCOMPLETE_TYPES_INCREMENT 64 | |
2357 | ||
3f76745e JM |
2358 | /* Record whether the function being analyzed contains inlined functions. */ |
2359 | static int current_function_has_inlines; | |
2d8b0f3a | 2360 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
3f76745e | 2361 | static int comp_unit_has_inlines; |
2d8b0f3a | 2362 | #endif |
71dfc51f | 2363 | |
3f76745e | 2364 | /* Forward declarations for functions defined in this file. */ |
71dfc51f | 2365 | |
b170964a | 2366 | static void addr_const_to_string PROTO((dyn_string_t, rtx)); |
3f76745e JM |
2367 | static char *addr_to_string PROTO((rtx)); |
2368 | static int is_pseudo_reg PROTO((rtx)); | |
2369 | static tree type_main_variant PROTO((tree)); | |
2370 | static int is_tagged_type PROTO((tree)); | |
d560ee52 KG |
2371 | static const char *dwarf_tag_name PROTO((unsigned)); |
2372 | static const char *dwarf_attr_name PROTO((unsigned)); | |
2373 | static const char *dwarf_form_name PROTO((unsigned)); | |
2374 | static const char *dwarf_stack_op_name PROTO((unsigned)); | |
487a6e06 | 2375 | #if 0 |
d560ee52 | 2376 | static const char *dwarf_type_encoding_name PROTO((unsigned)); |
487a6e06 | 2377 | #endif |
3f76745e JM |
2378 | static tree decl_ultimate_origin PROTO((tree)); |
2379 | static tree block_ultimate_origin PROTO((tree)); | |
2380 | static tree decl_class_context PROTO((tree)); | |
2381 | static void add_dwarf_attr PROTO((dw_die_ref, dw_attr_ref)); | |
2382 | static void add_AT_flag PROTO((dw_die_ref, | |
2383 | enum dwarf_attribute, | |
2384 | unsigned)); | |
2385 | static void add_AT_int PROTO((dw_die_ref, | |
2386 | enum dwarf_attribute, long)); | |
2387 | static void add_AT_unsigned PROTO((dw_die_ref, | |
2388 | enum dwarf_attribute, | |
2389 | unsigned long)); | |
2390 | static void add_AT_long_long PROTO((dw_die_ref, | |
2391 | enum dwarf_attribute, | |
2392 | unsigned long, unsigned long)); | |
2393 | static void add_AT_float PROTO((dw_die_ref, | |
2394 | enum dwarf_attribute, | |
2395 | unsigned, long *)); | |
2396 | static void add_AT_string PROTO((dw_die_ref, | |
d560ee52 KG |
2397 | enum dwarf_attribute, |
2398 | const char *)); | |
3f76745e JM |
2399 | static void add_AT_die_ref PROTO((dw_die_ref, |
2400 | enum dwarf_attribute, | |
2401 | dw_die_ref)); | |
2402 | static void add_AT_fde_ref PROTO((dw_die_ref, | |
2403 | enum dwarf_attribute, | |
2404 | unsigned)); | |
2405 | static void add_AT_loc PROTO((dw_die_ref, | |
2406 | enum dwarf_attribute, | |
2407 | dw_loc_descr_ref)); | |
2408 | static void add_AT_addr PROTO((dw_die_ref, | |
2409 | enum dwarf_attribute, char *)); | |
2410 | static void add_AT_lbl_id PROTO((dw_die_ref, | |
2411 | enum dwarf_attribute, char *)); | |
8b790721 | 2412 | static void add_AT_lbl_offset PROTO((dw_die_ref, |
3f76745e | 2413 | enum dwarf_attribute, char *)); |
3f76745e JM |
2414 | static dw_attr_ref get_AT PROTO((dw_die_ref, |
2415 | enum dwarf_attribute)); | |
a96c67ec JM |
2416 | static const char *get_AT_low_pc PROTO((dw_die_ref)); |
2417 | static const char *get_AT_hi_pc PROTO((dw_die_ref)); | |
2418 | static const char *get_AT_string PROTO((dw_die_ref, | |
3f76745e JM |
2419 | enum dwarf_attribute)); |
2420 | static int get_AT_flag PROTO((dw_die_ref, | |
2421 | enum dwarf_attribute)); | |
2422 | static unsigned get_AT_unsigned PROTO((dw_die_ref, | |
2423 | enum dwarf_attribute)); | |
2424 | static int is_c_family PROTO((void)); | |
2425 | static int is_fortran PROTO((void)); | |
2426 | static void remove_AT PROTO((dw_die_ref, | |
2427 | enum dwarf_attribute)); | |
2428 | static void remove_children PROTO((dw_die_ref)); | |
2429 | static void add_child_die PROTO((dw_die_ref, dw_die_ref)); | |
2430 | static dw_die_ref new_die PROTO((enum dwarf_tag, dw_die_ref)); | |
2431 | static dw_die_ref lookup_type_die PROTO((tree)); | |
2432 | static void equate_type_number_to_die PROTO((tree, dw_die_ref)); | |
2433 | static dw_die_ref lookup_decl_die PROTO((tree)); | |
2434 | static void equate_decl_number_to_die PROTO((tree, dw_die_ref)); | |
2435 | static dw_loc_descr_ref new_loc_descr PROTO((enum dwarf_location_atom, | |
2436 | unsigned long, unsigned long)); | |
2437 | static void add_loc_descr PROTO((dw_loc_descr_ref *, | |
2438 | dw_loc_descr_ref)); | |
2439 | static void print_spaces PROTO((FILE *)); | |
2440 | static void print_die PROTO((dw_die_ref, FILE *)); | |
2441 | static void print_dwarf_line_table PROTO((FILE *)); | |
956d6950 | 2442 | static void add_sibling_attributes PROTO((dw_die_ref)); |
3f76745e | 2443 | static void build_abbrev_table PROTO((dw_die_ref)); |
a96c67ec | 2444 | static unsigned long size_of_string PROTO((const char *)); |
3f76745e JM |
2445 | static unsigned long size_of_loc_descr PROTO((dw_loc_descr_ref)); |
2446 | static unsigned long size_of_locs PROTO((dw_loc_descr_ref)); | |
2447 | static int constant_size PROTO((long unsigned)); | |
2448 | static unsigned long size_of_die PROTO((dw_die_ref)); | |
2449 | static void calc_die_sizes PROTO((dw_die_ref)); | |
2d8b0f3a | 2450 | static unsigned long size_of_line_prolog PROTO((void)); |
3f76745e JM |
2451 | static unsigned long size_of_pubnames PROTO((void)); |
2452 | static unsigned long size_of_aranges PROTO((void)); | |
a96c67ec JM |
2453 | static enum dwarf_form value_format PROTO((dw_attr_ref)); |
2454 | static void output_value_format PROTO((dw_attr_ref)); | |
3f76745e JM |
2455 | static void output_abbrev_section PROTO((void)); |
2456 | static void output_loc_operands PROTO((dw_loc_descr_ref)); | |
3f76745e JM |
2457 | static void output_die PROTO((dw_die_ref)); |
2458 | static void output_compilation_unit_header PROTO((void)); | |
d560ee52 | 2459 | static const char *dwarf2_name PROTO((tree, int)); |
3f76745e JM |
2460 | static void add_pubname PROTO((tree, dw_die_ref)); |
2461 | static void output_pubnames PROTO((void)); | |
2d8b0f3a JL |
2462 | static void add_arange PROTO((tree, dw_die_ref)); |
2463 | static void output_aranges PROTO((void)); | |
3f76745e JM |
2464 | static void output_line_info PROTO((void)); |
2465 | static int is_body_block PROTO((tree)); | |
2466 | static dw_die_ref base_type_die PROTO((tree)); | |
2467 | static tree root_type PROTO((tree)); | |
2468 | static int is_base_type PROTO((tree)); | |
2469 | static dw_die_ref modified_type_die PROTO((tree, int, int, dw_die_ref)); | |
2470 | static int type_is_enum PROTO((tree)); | |
4401bf24 | 2471 | static dw_loc_descr_ref reg_loc_descriptor PROTO((rtx)); |
3f76745e JM |
2472 | static dw_loc_descr_ref based_loc_descr PROTO((unsigned, long)); |
2473 | static int is_based_loc PROTO((rtx)); | |
e60d4d7b | 2474 | static dw_loc_descr_ref mem_loc_descriptor PROTO((rtx, enum machine_mode mode)); |
4401bf24 | 2475 | static dw_loc_descr_ref concat_loc_descriptor PROTO((rtx, rtx)); |
3f76745e JM |
2476 | static dw_loc_descr_ref loc_descriptor PROTO((rtx)); |
2477 | static unsigned ceiling PROTO((unsigned, unsigned)); | |
2478 | static tree field_type PROTO((tree)); | |
2479 | static unsigned simple_type_align_in_bits PROTO((tree)); | |
2480 | static unsigned simple_type_size_in_bits PROTO((tree)); | |
2481 | static unsigned field_byte_offset PROTO((tree)); | |
ef76d03b JW |
2482 | static void add_AT_location_description PROTO((dw_die_ref, |
2483 | enum dwarf_attribute, rtx)); | |
3f76745e JM |
2484 | static void add_data_member_location_attribute PROTO((dw_die_ref, tree)); |
2485 | static void add_const_value_attribute PROTO((dw_die_ref, rtx)); | |
2486 | static void add_location_or_const_value_attribute PROTO((dw_die_ref, tree)); | |
d560ee52 | 2487 | static void add_name_attribute PROTO((dw_die_ref, const char *)); |
3f76745e JM |
2488 | static void add_bound_info PROTO((dw_die_ref, |
2489 | enum dwarf_attribute, tree)); | |
2490 | static void add_subscript_info PROTO((dw_die_ref, tree)); | |
2491 | static void add_byte_size_attribute PROTO((dw_die_ref, tree)); | |
2492 | static void add_bit_offset_attribute PROTO((dw_die_ref, tree)); | |
2493 | static void add_bit_size_attribute PROTO((dw_die_ref, tree)); | |
2494 | static void add_prototyped_attribute PROTO((dw_die_ref, tree)); | |
2495 | static void add_abstract_origin_attribute PROTO((dw_die_ref, tree)); | |
2496 | static void add_pure_or_virtual_attribute PROTO((dw_die_ref, tree)); | |
2497 | static void add_src_coords_attributes PROTO((dw_die_ref, tree)); | |
2d8b0f3a | 2498 | static void add_name_and_src_coords_attributes PROTO((dw_die_ref, tree)); |
3f76745e JM |
2499 | static void push_decl_scope PROTO((tree)); |
2500 | static dw_die_ref scope_die_for PROTO((tree, dw_die_ref)); | |
2501 | static void pop_decl_scope PROTO((void)); | |
2502 | static void add_type_attribute PROTO((dw_die_ref, tree, int, int, | |
2503 | dw_die_ref)); | |
2504 | static char *type_tag PROTO((tree)); | |
2505 | static tree member_declared_type PROTO((tree)); | |
487a6e06 | 2506 | #if 0 |
3f76745e | 2507 | static char *decl_start_label PROTO((tree)); |
487a6e06 | 2508 | #endif |
2d8b0f3a | 2509 | static void gen_array_type_die PROTO((tree, dw_die_ref)); |
3f76745e | 2510 | static void gen_set_type_die PROTO((tree, dw_die_ref)); |
d6f4ec51 | 2511 | #if 0 |
3f76745e | 2512 | static void gen_entry_point_die PROTO((tree, dw_die_ref)); |
d6f4ec51 | 2513 | #endif |
3f76745e JM |
2514 | static void pend_type PROTO((tree)); |
2515 | static void output_pending_types_for_scope PROTO((dw_die_ref)); | |
2516 | static void gen_inlined_enumeration_type_die PROTO((tree, dw_die_ref)); | |
2517 | static void gen_inlined_structure_type_die PROTO((tree, dw_die_ref)); | |
2518 | static void gen_inlined_union_type_die PROTO((tree, dw_die_ref)); | |
2519 | static void gen_enumeration_type_die PROTO((tree, dw_die_ref)); | |
2520 | static dw_die_ref gen_formal_parameter_die PROTO((tree, dw_die_ref)); | |
2521 | static void gen_unspecified_parameters_die PROTO((tree, dw_die_ref)); | |
2522 | static void gen_formal_types_die PROTO((tree, dw_die_ref)); | |
2523 | static void gen_subprogram_die PROTO((tree, dw_die_ref)); | |
2524 | static void gen_variable_die PROTO((tree, dw_die_ref)); | |
2525 | static void gen_label_die PROTO((tree, dw_die_ref)); | |
2526 | static void gen_lexical_block_die PROTO((tree, dw_die_ref, int)); | |
2d8b0f3a | 2527 | static void gen_inlined_subroutine_die PROTO((tree, dw_die_ref, int)); |
3f76745e JM |
2528 | static void gen_field_die PROTO((tree, dw_die_ref)); |
2529 | static void gen_ptr_to_mbr_type_die PROTO((tree, dw_die_ref)); | |
a96c67ec | 2530 | static dw_die_ref gen_compile_unit_die PROTO((const char *)); |
3f76745e JM |
2531 | static void gen_string_type_die PROTO((tree, dw_die_ref)); |
2532 | static void gen_inheritance_die PROTO((tree, dw_die_ref)); | |
2533 | static void gen_member_die PROTO((tree, dw_die_ref)); | |
2534 | static void gen_struct_or_union_type_die PROTO((tree, dw_die_ref)); | |
2535 | static void gen_subroutine_type_die PROTO((tree, dw_die_ref)); | |
2536 | static void gen_typedef_die PROTO((tree, dw_die_ref)); | |
2537 | static void gen_type_die PROTO((tree, dw_die_ref)); | |
2538 | static void gen_tagged_type_instantiation_die PROTO((tree, dw_die_ref)); | |
2539 | static void gen_block_die PROTO((tree, dw_die_ref, int)); | |
2540 | static void decls_for_scope PROTO((tree, dw_die_ref, int)); | |
2541 | static int is_redundant_typedef PROTO((tree)); | |
2542 | static void gen_decl_die PROTO((tree, dw_die_ref)); | |
d560ee52 KG |
2543 | static unsigned lookup_filename PROTO((const char *)); |
2544 | static void add_incomplete_type PROTO((tree)); | |
2545 | static void retry_incomplete_types PROTO((void)); | |
71dfc51f | 2546 | |
3f76745e | 2547 | /* Section names used to hold DWARF debugging information. */ |
c53aa195 JM |
2548 | #ifndef DEBUG_INFO_SECTION |
2549 | #define DEBUG_INFO_SECTION ".debug_info" | |
3f76745e JM |
2550 | #endif |
2551 | #ifndef ABBREV_SECTION | |
2552 | #define ABBREV_SECTION ".debug_abbrev" | |
2553 | #endif | |
2554 | #ifndef ARANGES_SECTION | |
2555 | #define ARANGES_SECTION ".debug_aranges" | |
2556 | #endif | |
2557 | #ifndef DW_MACINFO_SECTION | |
2558 | #define DW_MACINFO_SECTION ".debug_macinfo" | |
2559 | #endif | |
c53aa195 JM |
2560 | #ifndef DEBUG_LINE_SECTION |
2561 | #define DEBUG_LINE_SECTION ".debug_line" | |
3f76745e JM |
2562 | #endif |
2563 | #ifndef LOC_SECTION | |
2564 | #define LOC_SECTION ".debug_loc" | |
2565 | #endif | |
2566 | #ifndef PUBNAMES_SECTION | |
2567 | #define PUBNAMES_SECTION ".debug_pubnames" | |
2568 | #endif | |
2569 | #ifndef STR_SECTION | |
2570 | #define STR_SECTION ".debug_str" | |
2571 | #endif | |
a3f97cbb | 2572 | |
956d6950 | 2573 | /* Standard ELF section names for compiled code and data. */ |
3f76745e JM |
2574 | #ifndef TEXT_SECTION |
2575 | #define TEXT_SECTION ".text" | |
2576 | #endif | |
2577 | #ifndef DATA_SECTION | |
2578 | #define DATA_SECTION ".data" | |
2579 | #endif | |
2580 | #ifndef BSS_SECTION | |
2581 | #define BSS_SECTION ".bss" | |
2582 | #endif | |
71dfc51f | 2583 | |
8b790721 JM |
2584 | /* Labels we insert at beginning sections we can reference instead of |
2585 | the section names themselves. */ | |
2586 | ||
2587 | #ifndef TEXT_SECTION_LABEL | |
2588 | #define TEXT_SECTION_LABEL "Ltext" | |
2589 | #endif | |
2590 | #ifndef DEBUG_LINE_SECTION_LABEL | |
2591 | #define DEBUG_LINE_SECTION_LABEL "Ldebug_line" | |
2592 | #endif | |
2593 | #ifndef DEBUG_INFO_SECTION_LABEL | |
2594 | #define DEBUG_INFO_SECTION_LABEL "Ldebug_info" | |
2595 | #endif | |
2596 | #ifndef ABBREV_SECTION_LABEL | |
2597 | #define ABBREV_SECTION_LABEL "Ldebug_abbrev" | |
2598 | #endif | |
2599 | ||
a3f97cbb | 2600 | |
3f76745e JM |
2601 | /* Definitions of defaults for formats and names of various special |
2602 | (artificial) labels which may be generated within this file (when the -g | |
2603 | options is used and DWARF_DEBUGGING_INFO is in effect. | |
2604 | If necessary, these may be overridden from within the tm.h file, but | |
2605 | typically, overriding these defaults is unnecessary. */ | |
a3f97cbb | 2606 | |
257ebd1f | 2607 | static char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
8b790721 JM |
2608 | static char text_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
2609 | static char abbrev_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
2610 | static char debug_info_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
2611 | static char debug_line_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f | 2612 | |
3f76745e JM |
2613 | #ifndef TEXT_END_LABEL |
2614 | #define TEXT_END_LABEL "Letext" | |
2615 | #endif | |
2616 | #ifndef DATA_END_LABEL | |
2617 | #define DATA_END_LABEL "Ledata" | |
2618 | #endif | |
2619 | #ifndef BSS_END_LABEL | |
2620 | #define BSS_END_LABEL "Lebss" | |
2621 | #endif | |
2622 | #ifndef INSN_LABEL_FMT | |
2623 | #define INSN_LABEL_FMT "LI%u_" | |
2624 | #endif | |
2625 | #ifndef BLOCK_BEGIN_LABEL | |
2626 | #define BLOCK_BEGIN_LABEL "LBB" | |
2627 | #endif | |
2628 | #ifndef BLOCK_END_LABEL | |
2629 | #define BLOCK_END_LABEL "LBE" | |
2630 | #endif | |
2631 | #ifndef BODY_BEGIN_LABEL | |
2632 | #define BODY_BEGIN_LABEL "Lbb" | |
2633 | #endif | |
2634 | #ifndef BODY_END_LABEL | |
2635 | #define BODY_END_LABEL "Lbe" | |
2636 | #endif | |
2637 | #ifndef LINE_CODE_LABEL | |
2638 | #define LINE_CODE_LABEL "LM" | |
2639 | #endif | |
2640 | #ifndef SEPARATE_LINE_CODE_LABEL | |
2641 | #define SEPARATE_LINE_CODE_LABEL "LSM" | |
2642 | #endif | |
71dfc51f | 2643 | |
3f76745e JM |
2644 | /* Convert a reference to the assembler name of a C-level name. This |
2645 | macro has the same effect as ASM_OUTPUT_LABELREF, but copies to | |
2646 | a string rather than writing to a file. */ | |
2647 | #ifndef ASM_NAME_TO_STRING | |
19283265 RH |
2648 | #define ASM_NAME_TO_STRING(STR, NAME) \ |
2649 | do { \ | |
2650 | if ((NAME)[0] == '*') \ | |
2651 | dyn_string_append (STR, NAME + 1); \ | |
2652 | else \ | |
2653 | { \ | |
ec940faa | 2654 | const char *newstr; \ |
98577d03 | 2655 | STRIP_NAME_ENCODING (newstr, NAME); \ |
19283265 | 2656 | dyn_string_append (STR, user_label_prefix); \ |
98577d03 | 2657 | dyn_string_append (STR, newstr); \ |
19283265 RH |
2658 | } \ |
2659 | } \ | |
3f76745e JM |
2660 | while (0) |
2661 | #endif | |
2662 | \f | |
14a774a9 RK |
2663 | /* We allow a language front-end to designate a function that is to be |
2664 | called to "demangle" any name before it it put into a DIE. */ | |
2665 | ||
a96c67ec | 2666 | static const char *(*demangle_name_func) PROTO((const char *)); |
14a774a9 RK |
2667 | |
2668 | void | |
2669 | dwarf2out_set_demangle_name_func (func) | |
a96c67ec | 2670 | const char *(*func) PROTO((const char *)); |
14a774a9 RK |
2671 | { |
2672 | demangle_name_func = func; | |
2673 | } | |
2674 | \f | |
3f76745e JM |
2675 | /* Convert an integer constant expression into assembler syntax. Addition |
2676 | and subtraction are the only arithmetic that may appear in these | |
2677 | expressions. This is an adaptation of output_addr_const in final.c. | |
2678 | Here, the target of the conversion is a string buffer. We can't use | |
2679 | output_addr_const directly, because it writes to a file. */ | |
71dfc51f | 2680 | |
3f76745e JM |
2681 | static void |
2682 | addr_const_to_string (str, x) | |
b170964a | 2683 | dyn_string_t str; |
3f76745e | 2684 | rtx x; |
a3f97cbb | 2685 | { |
3f76745e | 2686 | char buf1[256]; |
71dfc51f | 2687 | |
3f76745e | 2688 | restart: |
3f76745e JM |
2689 | switch (GET_CODE (x)) |
2690 | { | |
2691 | case PC: | |
2692 | if (flag_pic) | |
b170964a | 2693 | dyn_string_append (str, ","); |
3f76745e JM |
2694 | else |
2695 | abort (); | |
2696 | break; | |
71dfc51f | 2697 | |
3f76745e | 2698 | case SYMBOL_REF: |
b170964a | 2699 | ASM_NAME_TO_STRING (str, XSTR (x, 0)); |
3f76745e | 2700 | break; |
a3f97cbb | 2701 | |
3f76745e JM |
2702 | case LABEL_REF: |
2703 | ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (XEXP (x, 0))); | |
b170964a | 2704 | ASM_NAME_TO_STRING (str, buf1); |
3f76745e | 2705 | break; |
71dfc51f | 2706 | |
3f76745e JM |
2707 | case CODE_LABEL: |
2708 | ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (x)); | |
b170964a | 2709 | ASM_NAME_TO_STRING (str, buf1); |
3f76745e | 2710 | break; |
71dfc51f | 2711 | |
3f76745e JM |
2712 | case CONST_INT: |
2713 | sprintf (buf1, HOST_WIDE_INT_PRINT_DEC, INTVAL (x)); | |
b170964a | 2714 | dyn_string_append (str, buf1); |
3f76745e | 2715 | break; |
a3f97cbb | 2716 | |
3f76745e JM |
2717 | case CONST: |
2718 | /* This used to output parentheses around the expression, but that does | |
2719 | not work on the 386 (either ATT or BSD assembler). */ | |
b170964a | 2720 | addr_const_to_string (str, XEXP (x, 0)); |
3f76745e | 2721 | break; |
71dfc51f | 2722 | |
3f76745e JM |
2723 | case CONST_DOUBLE: |
2724 | if (GET_MODE (x) == VOIDmode) | |
2725 | { | |
2726 | /* We can use %d if the number is one word and positive. */ | |
2727 | if (CONST_DOUBLE_HIGH (x)) | |
2728 | sprintf (buf1, HOST_WIDE_INT_PRINT_DOUBLE_HEX, | |
2729 | CONST_DOUBLE_HIGH (x), CONST_DOUBLE_LOW (x)); | |
2730 | else if (CONST_DOUBLE_LOW (x) < 0) | |
2731 | sprintf (buf1, HOST_WIDE_INT_PRINT_HEX, CONST_DOUBLE_LOW (x)); | |
2732 | else | |
2733 | sprintf (buf1, HOST_WIDE_INT_PRINT_DEC, | |
2734 | CONST_DOUBLE_LOW (x)); | |
b170964a | 2735 | dyn_string_append (str, buf1); |
3f76745e JM |
2736 | } |
2737 | else | |
2738 | /* We can't handle floating point constants; PRINT_OPERAND must | |
2739 | handle them. */ | |
2740 | output_operand_lossage ("floating constant misused"); | |
2741 | break; | |
71dfc51f | 2742 | |
3f76745e JM |
2743 | case PLUS: |
2744 | /* Some assemblers need integer constants to appear last (eg masm). */ | |
2745 | if (GET_CODE (XEXP (x, 0)) == CONST_INT) | |
a3f97cbb | 2746 | { |
b170964a | 2747 | addr_const_to_string (str, XEXP (x, 1)); |
3f76745e | 2748 | if (INTVAL (XEXP (x, 0)) >= 0) |
b170964a | 2749 | dyn_string_append (str, "+"); |
3f76745e | 2750 | |
b170964a | 2751 | addr_const_to_string (str, XEXP (x, 0)); |
a3f97cbb | 2752 | } |
3f76745e JM |
2753 | else |
2754 | { | |
b170964a | 2755 | addr_const_to_string (str, XEXP (x, 0)); |
3f76745e | 2756 | if (INTVAL (XEXP (x, 1)) >= 0) |
b170964a | 2757 | dyn_string_append (str, "+"); |
71dfc51f | 2758 | |
b170964a | 2759 | addr_const_to_string (str, XEXP (x, 1)); |
3f76745e JM |
2760 | } |
2761 | break; | |
a3f97cbb | 2762 | |
3f76745e JM |
2763 | case MINUS: |
2764 | /* Avoid outputting things like x-x or x+5-x, since some assemblers | |
2765 | can't handle that. */ | |
2766 | x = simplify_subtraction (x); | |
2767 | if (GET_CODE (x) != MINUS) | |
2768 | goto restart; | |
71dfc51f | 2769 | |
b170964a MM |
2770 | addr_const_to_string (str, XEXP (x, 0)); |
2771 | dyn_string_append (str, "-"); | |
3f76745e JM |
2772 | if (GET_CODE (XEXP (x, 1)) == CONST_INT |
2773 | && INTVAL (XEXP (x, 1)) < 0) | |
a3f97cbb | 2774 | { |
b170964a MM |
2775 | dyn_string_append (str, ASM_OPEN_PAREN); |
2776 | addr_const_to_string (str, XEXP (x, 1)); | |
2777 | dyn_string_append (str, ASM_CLOSE_PAREN); | |
3f76745e JM |
2778 | } |
2779 | else | |
b170964a | 2780 | addr_const_to_string (str, XEXP (x, 1)); |
3f76745e | 2781 | break; |
71dfc51f | 2782 | |
3f76745e JM |
2783 | case ZERO_EXTEND: |
2784 | case SIGN_EXTEND: | |
b170964a | 2785 | addr_const_to_string (str, XEXP (x, 0)); |
3f76745e | 2786 | break; |
71dfc51f | 2787 | |
3f76745e JM |
2788 | default: |
2789 | output_operand_lossage ("invalid expression as operand"); | |
2790 | } | |
d291dd49 JM |
2791 | } |
2792 | ||
3f76745e JM |
2793 | /* Convert an address constant to a string, and return a pointer to |
2794 | a copy of the result, located on the heap. */ | |
71dfc51f | 2795 | |
3f76745e JM |
2796 | static char * |
2797 | addr_to_string (x) | |
2798 | rtx x; | |
d291dd49 | 2799 | { |
b170964a MM |
2800 | dyn_string_t ds = dyn_string_new (256); |
2801 | char *s; | |
2802 | ||
2803 | addr_const_to_string (ds, x); | |
2804 | ||
2805 | /* Return the dynamically allocated string, but free the | |
2806 | dyn_string_t itself. */ | |
2807 | s = ds->s; | |
2808 | free (ds); | |
2809 | return s; | |
d291dd49 JM |
2810 | } |
2811 | ||
956d6950 | 2812 | /* Test if rtl node points to a pseudo register. */ |
71dfc51f | 2813 | |
3f76745e JM |
2814 | static inline int |
2815 | is_pseudo_reg (rtl) | |
2816 | register rtx rtl; | |
d291dd49 | 2817 | { |
3f76745e JM |
2818 | return (((GET_CODE (rtl) == REG) && (REGNO (rtl) >= FIRST_PSEUDO_REGISTER)) |
2819 | || ((GET_CODE (rtl) == SUBREG) | |
2820 | && (REGNO (XEXP (rtl, 0)) >= FIRST_PSEUDO_REGISTER))); | |
d291dd49 JM |
2821 | } |
2822 | ||
3f76745e JM |
2823 | /* Return a reference to a type, with its const and volatile qualifiers |
2824 | removed. */ | |
71dfc51f | 2825 | |
3f76745e JM |
2826 | static inline tree |
2827 | type_main_variant (type) | |
2828 | register tree type; | |
d291dd49 | 2829 | { |
3f76745e | 2830 | type = TYPE_MAIN_VARIANT (type); |
71dfc51f | 2831 | |
3f76745e JM |
2832 | /* There really should be only one main variant among any group of variants |
2833 | of a given type (and all of the MAIN_VARIANT values for all members of | |
2834 | the group should point to that one type) but sometimes the C front-end | |
2835 | messes this up for array types, so we work around that bug here. */ | |
71dfc51f | 2836 | |
3f76745e JM |
2837 | if (TREE_CODE (type) == ARRAY_TYPE) |
2838 | while (type != TYPE_MAIN_VARIANT (type)) | |
2839 | type = TYPE_MAIN_VARIANT (type); | |
2840 | ||
2841 | return type; | |
a3f97cbb JW |
2842 | } |
2843 | ||
3f76745e | 2844 | /* Return non-zero if the given type node represents a tagged type. */ |
71dfc51f RK |
2845 | |
2846 | static inline int | |
3f76745e JM |
2847 | is_tagged_type (type) |
2848 | register tree type; | |
bdb669cb | 2849 | { |
3f76745e | 2850 | register enum tree_code code = TREE_CODE (type); |
71dfc51f | 2851 | |
3f76745e JM |
2852 | return (code == RECORD_TYPE || code == UNION_TYPE |
2853 | || code == QUAL_UNION_TYPE || code == ENUMERAL_TYPE); | |
bdb669cb JM |
2854 | } |
2855 | ||
3f76745e | 2856 | /* Convert a DIE tag into its string name. */ |
71dfc51f | 2857 | |
d560ee52 | 2858 | static const char * |
3f76745e JM |
2859 | dwarf_tag_name (tag) |
2860 | register unsigned tag; | |
bdb669cb | 2861 | { |
3f76745e JM |
2862 | switch (tag) |
2863 | { | |
2864 | case DW_TAG_padding: | |
2865 | return "DW_TAG_padding"; | |
2866 | case DW_TAG_array_type: | |
2867 | return "DW_TAG_array_type"; | |
2868 | case DW_TAG_class_type: | |
2869 | return "DW_TAG_class_type"; | |
2870 | case DW_TAG_entry_point: | |
2871 | return "DW_TAG_entry_point"; | |
2872 | case DW_TAG_enumeration_type: | |
2873 | return "DW_TAG_enumeration_type"; | |
2874 | case DW_TAG_formal_parameter: | |
2875 | return "DW_TAG_formal_parameter"; | |
2876 | case DW_TAG_imported_declaration: | |
2877 | return "DW_TAG_imported_declaration"; | |
2878 | case DW_TAG_label: | |
2879 | return "DW_TAG_label"; | |
2880 | case DW_TAG_lexical_block: | |
2881 | return "DW_TAG_lexical_block"; | |
2882 | case DW_TAG_member: | |
2883 | return "DW_TAG_member"; | |
2884 | case DW_TAG_pointer_type: | |
2885 | return "DW_TAG_pointer_type"; | |
2886 | case DW_TAG_reference_type: | |
2887 | return "DW_TAG_reference_type"; | |
2888 | case DW_TAG_compile_unit: | |
2889 | return "DW_TAG_compile_unit"; | |
2890 | case DW_TAG_string_type: | |
2891 | return "DW_TAG_string_type"; | |
2892 | case DW_TAG_structure_type: | |
2893 | return "DW_TAG_structure_type"; | |
2894 | case DW_TAG_subroutine_type: | |
2895 | return "DW_TAG_subroutine_type"; | |
2896 | case DW_TAG_typedef: | |
2897 | return "DW_TAG_typedef"; | |
2898 | case DW_TAG_union_type: | |
2899 | return "DW_TAG_union_type"; | |
2900 | case DW_TAG_unspecified_parameters: | |
2901 | return "DW_TAG_unspecified_parameters"; | |
2902 | case DW_TAG_variant: | |
2903 | return "DW_TAG_variant"; | |
2904 | case DW_TAG_common_block: | |
2905 | return "DW_TAG_common_block"; | |
2906 | case DW_TAG_common_inclusion: | |
2907 | return "DW_TAG_common_inclusion"; | |
2908 | case DW_TAG_inheritance: | |
2909 | return "DW_TAG_inheritance"; | |
2910 | case DW_TAG_inlined_subroutine: | |
2911 | return "DW_TAG_inlined_subroutine"; | |
2912 | case DW_TAG_module: | |
2913 | return "DW_TAG_module"; | |
2914 | case DW_TAG_ptr_to_member_type: | |
2915 | return "DW_TAG_ptr_to_member_type"; | |
2916 | case DW_TAG_set_type: | |
2917 | return "DW_TAG_set_type"; | |
2918 | case DW_TAG_subrange_type: | |
2919 | return "DW_TAG_subrange_type"; | |
2920 | case DW_TAG_with_stmt: | |
2921 | return "DW_TAG_with_stmt"; | |
2922 | case DW_TAG_access_declaration: | |
2923 | return "DW_TAG_access_declaration"; | |
2924 | case DW_TAG_base_type: | |
2925 | return "DW_TAG_base_type"; | |
2926 | case DW_TAG_catch_block: | |
2927 | return "DW_TAG_catch_block"; | |
2928 | case DW_TAG_const_type: | |
2929 | return "DW_TAG_const_type"; | |
2930 | case DW_TAG_constant: | |
2931 | return "DW_TAG_constant"; | |
2932 | case DW_TAG_enumerator: | |
2933 | return "DW_TAG_enumerator"; | |
2934 | case DW_TAG_file_type: | |
2935 | return "DW_TAG_file_type"; | |
2936 | case DW_TAG_friend: | |
2937 | return "DW_TAG_friend"; | |
2938 | case DW_TAG_namelist: | |
2939 | return "DW_TAG_namelist"; | |
2940 | case DW_TAG_namelist_item: | |
2941 | return "DW_TAG_namelist_item"; | |
2942 | case DW_TAG_packed_type: | |
2943 | return "DW_TAG_packed_type"; | |
2944 | case DW_TAG_subprogram: | |
2945 | return "DW_TAG_subprogram"; | |
2946 | case DW_TAG_template_type_param: | |
2947 | return "DW_TAG_template_type_param"; | |
2948 | case DW_TAG_template_value_param: | |
2949 | return "DW_TAG_template_value_param"; | |
2950 | case DW_TAG_thrown_type: | |
2951 | return "DW_TAG_thrown_type"; | |
2952 | case DW_TAG_try_block: | |
2953 | return "DW_TAG_try_block"; | |
2954 | case DW_TAG_variant_part: | |
2955 | return "DW_TAG_variant_part"; | |
2956 | case DW_TAG_variable: | |
2957 | return "DW_TAG_variable"; | |
2958 | case DW_TAG_volatile_type: | |
2959 | return "DW_TAG_volatile_type"; | |
2960 | case DW_TAG_MIPS_loop: | |
2961 | return "DW_TAG_MIPS_loop"; | |
2962 | case DW_TAG_format_label: | |
2963 | return "DW_TAG_format_label"; | |
2964 | case DW_TAG_function_template: | |
2965 | return "DW_TAG_function_template"; | |
2966 | case DW_TAG_class_template: | |
2967 | return "DW_TAG_class_template"; | |
2968 | default: | |
2969 | return "DW_TAG_<unknown>"; | |
2970 | } | |
bdb669cb | 2971 | } |
a3f97cbb | 2972 | |
3f76745e | 2973 | /* Convert a DWARF attribute code into its string name. */ |
71dfc51f | 2974 | |
d560ee52 | 2975 | static const char * |
3f76745e JM |
2976 | dwarf_attr_name (attr) |
2977 | register unsigned attr; | |
4b674448 | 2978 | { |
3f76745e | 2979 | switch (attr) |
4b674448 | 2980 | { |
3f76745e JM |
2981 | case DW_AT_sibling: |
2982 | return "DW_AT_sibling"; | |
2983 | case DW_AT_location: | |
2984 | return "DW_AT_location"; | |
2985 | case DW_AT_name: | |
2986 | return "DW_AT_name"; | |
2987 | case DW_AT_ordering: | |
2988 | return "DW_AT_ordering"; | |
2989 | case DW_AT_subscr_data: | |
2990 | return "DW_AT_subscr_data"; | |
2991 | case DW_AT_byte_size: | |
2992 | return "DW_AT_byte_size"; | |
2993 | case DW_AT_bit_offset: | |
2994 | return "DW_AT_bit_offset"; | |
2995 | case DW_AT_bit_size: | |
2996 | return "DW_AT_bit_size"; | |
2997 | case DW_AT_element_list: | |
2998 | return "DW_AT_element_list"; | |
2999 | case DW_AT_stmt_list: | |
3000 | return "DW_AT_stmt_list"; | |
3001 | case DW_AT_low_pc: | |
3002 | return "DW_AT_low_pc"; | |
3003 | case DW_AT_high_pc: | |
3004 | return "DW_AT_high_pc"; | |
3005 | case DW_AT_language: | |
3006 | return "DW_AT_language"; | |
3007 | case DW_AT_member: | |
3008 | return "DW_AT_member"; | |
3009 | case DW_AT_discr: | |
3010 | return "DW_AT_discr"; | |
3011 | case DW_AT_discr_value: | |
3012 | return "DW_AT_discr_value"; | |
3013 | case DW_AT_visibility: | |
3014 | return "DW_AT_visibility"; | |
3015 | case DW_AT_import: | |
3016 | return "DW_AT_import"; | |
3017 | case DW_AT_string_length: | |
3018 | return "DW_AT_string_length"; | |
3019 | case DW_AT_common_reference: | |
3020 | return "DW_AT_common_reference"; | |
3021 | case DW_AT_comp_dir: | |
3022 | return "DW_AT_comp_dir"; | |
3023 | case DW_AT_const_value: | |
3024 | return "DW_AT_const_value"; | |
3025 | case DW_AT_containing_type: | |
3026 | return "DW_AT_containing_type"; | |
3027 | case DW_AT_default_value: | |
3028 | return "DW_AT_default_value"; | |
3029 | case DW_AT_inline: | |
3030 | return "DW_AT_inline"; | |
3031 | case DW_AT_is_optional: | |
3032 | return "DW_AT_is_optional"; | |
3033 | case DW_AT_lower_bound: | |
3034 | return "DW_AT_lower_bound"; | |
3035 | case DW_AT_producer: | |
3036 | return "DW_AT_producer"; | |
3037 | case DW_AT_prototyped: | |
3038 | return "DW_AT_prototyped"; | |
3039 | case DW_AT_return_addr: | |
3040 | return "DW_AT_return_addr"; | |
3041 | case DW_AT_start_scope: | |
3042 | return "DW_AT_start_scope"; | |
3043 | case DW_AT_stride_size: | |
3044 | return "DW_AT_stride_size"; | |
3045 | case DW_AT_upper_bound: | |
3046 | return "DW_AT_upper_bound"; | |
3047 | case DW_AT_abstract_origin: | |
3048 | return "DW_AT_abstract_origin"; | |
3049 | case DW_AT_accessibility: | |
3050 | return "DW_AT_accessibility"; | |
3051 | case DW_AT_address_class: | |
3052 | return "DW_AT_address_class"; | |
3053 | case DW_AT_artificial: | |
3054 | return "DW_AT_artificial"; | |
3055 | case DW_AT_base_types: | |
3056 | return "DW_AT_base_types"; | |
3057 | case DW_AT_calling_convention: | |
3058 | return "DW_AT_calling_convention"; | |
3059 | case DW_AT_count: | |
3060 | return "DW_AT_count"; | |
3061 | case DW_AT_data_member_location: | |
3062 | return "DW_AT_data_member_location"; | |
3063 | case DW_AT_decl_column: | |
3064 | return "DW_AT_decl_column"; | |
3065 | case DW_AT_decl_file: | |
3066 | return "DW_AT_decl_file"; | |
3067 | case DW_AT_decl_line: | |
3068 | return "DW_AT_decl_line"; | |
3069 | case DW_AT_declaration: | |
3070 | return "DW_AT_declaration"; | |
3071 | case DW_AT_discr_list: | |
3072 | return "DW_AT_discr_list"; | |
3073 | case DW_AT_encoding: | |
3074 | return "DW_AT_encoding"; | |
3075 | case DW_AT_external: | |
3076 | return "DW_AT_external"; | |
3077 | case DW_AT_frame_base: | |
3078 | return "DW_AT_frame_base"; | |
3079 | case DW_AT_friend: | |
3080 | return "DW_AT_friend"; | |
3081 | case DW_AT_identifier_case: | |
3082 | return "DW_AT_identifier_case"; | |
3083 | case DW_AT_macro_info: | |
3084 | return "DW_AT_macro_info"; | |
3085 | case DW_AT_namelist_items: | |
3086 | return "DW_AT_namelist_items"; | |
3087 | case DW_AT_priority: | |
3088 | return "DW_AT_priority"; | |
3089 | case DW_AT_segment: | |
3090 | return "DW_AT_segment"; | |
3091 | case DW_AT_specification: | |
3092 | return "DW_AT_specification"; | |
3093 | case DW_AT_static_link: | |
3094 | return "DW_AT_static_link"; | |
3095 | case DW_AT_type: | |
3096 | return "DW_AT_type"; | |
3097 | case DW_AT_use_location: | |
3098 | return "DW_AT_use_location"; | |
3099 | case DW_AT_variable_parameter: | |
3100 | return "DW_AT_variable_parameter"; | |
3101 | case DW_AT_virtuality: | |
3102 | return "DW_AT_virtuality"; | |
3103 | case DW_AT_vtable_elem_location: | |
3104 | return "DW_AT_vtable_elem_location"; | |
71dfc51f | 3105 | |
3f76745e JM |
3106 | case DW_AT_MIPS_fde: |
3107 | return "DW_AT_MIPS_fde"; | |
3108 | case DW_AT_MIPS_loop_begin: | |
3109 | return "DW_AT_MIPS_loop_begin"; | |
3110 | case DW_AT_MIPS_tail_loop_begin: | |
3111 | return "DW_AT_MIPS_tail_loop_begin"; | |
3112 | case DW_AT_MIPS_epilog_begin: | |
3113 | return "DW_AT_MIPS_epilog_begin"; | |
3114 | case DW_AT_MIPS_loop_unroll_factor: | |
3115 | return "DW_AT_MIPS_loop_unroll_factor"; | |
3116 | case DW_AT_MIPS_software_pipeline_depth: | |
3117 | return "DW_AT_MIPS_software_pipeline_depth"; | |
3118 | case DW_AT_MIPS_linkage_name: | |
3119 | return "DW_AT_MIPS_linkage_name"; | |
3120 | case DW_AT_MIPS_stride: | |
3121 | return "DW_AT_MIPS_stride"; | |
3122 | case DW_AT_MIPS_abstract_name: | |
3123 | return "DW_AT_MIPS_abstract_name"; | |
3124 | case DW_AT_MIPS_clone_origin: | |
3125 | return "DW_AT_MIPS_clone_origin"; | |
3126 | case DW_AT_MIPS_has_inlines: | |
3127 | return "DW_AT_MIPS_has_inlines"; | |
71dfc51f | 3128 | |
3f76745e JM |
3129 | case DW_AT_sf_names: |
3130 | return "DW_AT_sf_names"; | |
3131 | case DW_AT_src_info: | |
3132 | return "DW_AT_src_info"; | |
3133 | case DW_AT_mac_info: | |
3134 | return "DW_AT_mac_info"; | |
3135 | case DW_AT_src_coords: | |
3136 | return "DW_AT_src_coords"; | |
3137 | case DW_AT_body_begin: | |
3138 | return "DW_AT_body_begin"; | |
3139 | case DW_AT_body_end: | |
3140 | return "DW_AT_body_end"; | |
3141 | default: | |
3142 | return "DW_AT_<unknown>"; | |
4b674448 JM |
3143 | } |
3144 | } | |
3145 | ||
3f76745e | 3146 | /* Convert a DWARF value form code into its string name. */ |
71dfc51f | 3147 | |
d560ee52 | 3148 | static const char * |
3f76745e JM |
3149 | dwarf_form_name (form) |
3150 | register unsigned form; | |
4b674448 | 3151 | { |
3f76745e | 3152 | switch (form) |
4b674448 | 3153 | { |
3f76745e JM |
3154 | case DW_FORM_addr: |
3155 | return "DW_FORM_addr"; | |
3156 | case DW_FORM_block2: | |
3157 | return "DW_FORM_block2"; | |
3158 | case DW_FORM_block4: | |
3159 | return "DW_FORM_block4"; | |
3160 | case DW_FORM_data2: | |
3161 | return "DW_FORM_data2"; | |
3162 | case DW_FORM_data4: | |
3163 | return "DW_FORM_data4"; | |
3164 | case DW_FORM_data8: | |
3165 | return "DW_FORM_data8"; | |
3166 | case DW_FORM_string: | |
3167 | return "DW_FORM_string"; | |
3168 | case DW_FORM_block: | |
3169 | return "DW_FORM_block"; | |
3170 | case DW_FORM_block1: | |
3171 | return "DW_FORM_block1"; | |
3172 | case DW_FORM_data1: | |
3173 | return "DW_FORM_data1"; | |
3174 | case DW_FORM_flag: | |
3175 | return "DW_FORM_flag"; | |
3176 | case DW_FORM_sdata: | |
3177 | return "DW_FORM_sdata"; | |
3178 | case DW_FORM_strp: | |
3179 | return "DW_FORM_strp"; | |
3180 | case DW_FORM_udata: | |
3181 | return "DW_FORM_udata"; | |
3182 | case DW_FORM_ref_addr: | |
3183 | return "DW_FORM_ref_addr"; | |
3184 | case DW_FORM_ref1: | |
3185 | return "DW_FORM_ref1"; | |
3186 | case DW_FORM_ref2: | |
3187 | return "DW_FORM_ref2"; | |
3188 | case DW_FORM_ref4: | |
3189 | return "DW_FORM_ref4"; | |
3190 | case DW_FORM_ref8: | |
3191 | return "DW_FORM_ref8"; | |
3192 | case DW_FORM_ref_udata: | |
3193 | return "DW_FORM_ref_udata"; | |
3194 | case DW_FORM_indirect: | |
3195 | return "DW_FORM_indirect"; | |
3196 | default: | |
3197 | return "DW_FORM_<unknown>"; | |
4b674448 JM |
3198 | } |
3199 | } | |
3200 | ||
3f76745e | 3201 | /* Convert a DWARF stack opcode into its string name. */ |
71dfc51f | 3202 | |
d560ee52 | 3203 | static const char * |
3f76745e JM |
3204 | dwarf_stack_op_name (op) |
3205 | register unsigned op; | |
a3f97cbb | 3206 | { |
3f76745e | 3207 | switch (op) |
a3f97cbb | 3208 | { |
3f76745e JM |
3209 | case DW_OP_addr: |
3210 | return "DW_OP_addr"; | |
3211 | case DW_OP_deref: | |
3212 | return "DW_OP_deref"; | |
3213 | case DW_OP_const1u: | |
3214 | return "DW_OP_const1u"; | |
3215 | case DW_OP_const1s: | |
3216 | return "DW_OP_const1s"; | |
3217 | case DW_OP_const2u: | |
3218 | return "DW_OP_const2u"; | |
3219 | case DW_OP_const2s: | |
3220 | return "DW_OP_const2s"; | |
3221 | case DW_OP_const4u: | |
3222 | return "DW_OP_const4u"; | |
3223 | case DW_OP_const4s: | |
3224 | return "DW_OP_const4s"; | |
3225 | case DW_OP_const8u: | |
3226 | return "DW_OP_const8u"; | |
3227 | case DW_OP_const8s: | |
3228 | return "DW_OP_const8s"; | |
3229 | case DW_OP_constu: | |
3230 | return "DW_OP_constu"; | |
3231 | case DW_OP_consts: | |
3232 | return "DW_OP_consts"; | |
3233 | case DW_OP_dup: | |
3234 | return "DW_OP_dup"; | |
3235 | case DW_OP_drop: | |
3236 | return "DW_OP_drop"; | |
3237 | case DW_OP_over: | |
3238 | return "DW_OP_over"; | |
3239 | case DW_OP_pick: | |
3240 | return "DW_OP_pick"; | |
3241 | case DW_OP_swap: | |
3242 | return "DW_OP_swap"; | |
3243 | case DW_OP_rot: | |
3244 | return "DW_OP_rot"; | |
3245 | case DW_OP_xderef: | |
3246 | return "DW_OP_xderef"; | |
3247 | case DW_OP_abs: | |
3248 | return "DW_OP_abs"; | |
3249 | case DW_OP_and: | |
3250 | return "DW_OP_and"; | |
3251 | case DW_OP_div: | |
3252 | return "DW_OP_div"; | |
3253 | case DW_OP_minus: | |
3254 | return "DW_OP_minus"; | |
3255 | case DW_OP_mod: | |
3256 | return "DW_OP_mod"; | |
3257 | case DW_OP_mul: | |
3258 | return "DW_OP_mul"; | |
3259 | case DW_OP_neg: | |
3260 | return "DW_OP_neg"; | |
3261 | case DW_OP_not: | |
3262 | return "DW_OP_not"; | |
3263 | case DW_OP_or: | |
3264 | return "DW_OP_or"; | |
3265 | case DW_OP_plus: | |
3266 | return "DW_OP_plus"; | |
3267 | case DW_OP_plus_uconst: | |
3268 | return "DW_OP_plus_uconst"; | |
3269 | case DW_OP_shl: | |
3270 | return "DW_OP_shl"; | |
3271 | case DW_OP_shr: | |
3272 | return "DW_OP_shr"; | |
3273 | case DW_OP_shra: | |
3274 | return "DW_OP_shra"; | |
3275 | case DW_OP_xor: | |
3276 | return "DW_OP_xor"; | |
3277 | case DW_OP_bra: | |
3278 | return "DW_OP_bra"; | |
3279 | case DW_OP_eq: | |
3280 | return "DW_OP_eq"; | |
3281 | case DW_OP_ge: | |
3282 | return "DW_OP_ge"; | |
3283 | case DW_OP_gt: | |
3284 | return "DW_OP_gt"; | |
3285 | case DW_OP_le: | |
3286 | return "DW_OP_le"; | |
3287 | case DW_OP_lt: | |
3288 | return "DW_OP_lt"; | |
3289 | case DW_OP_ne: | |
3290 | return "DW_OP_ne"; | |
3291 | case DW_OP_skip: | |
3292 | return "DW_OP_skip"; | |
3293 | case DW_OP_lit0: | |
3294 | return "DW_OP_lit0"; | |
3295 | case DW_OP_lit1: | |
3296 | return "DW_OP_lit1"; | |
3297 | case DW_OP_lit2: | |
3298 | return "DW_OP_lit2"; | |
3299 | case DW_OP_lit3: | |
3300 | return "DW_OP_lit3"; | |
3301 | case DW_OP_lit4: | |
3302 | return "DW_OP_lit4"; | |
3303 | case DW_OP_lit5: | |
3304 | return "DW_OP_lit5"; | |
3305 | case DW_OP_lit6: | |
3306 | return "DW_OP_lit6"; | |
3307 | case DW_OP_lit7: | |
3308 | return "DW_OP_lit7"; | |
3309 | case DW_OP_lit8: | |
3310 | return "DW_OP_lit8"; | |
3311 | case DW_OP_lit9: | |
3312 | return "DW_OP_lit9"; | |
3313 | case DW_OP_lit10: | |
3314 | return "DW_OP_lit10"; | |
3315 | case DW_OP_lit11: | |
3316 | return "DW_OP_lit11"; | |
3317 | case DW_OP_lit12: | |
3318 | return "DW_OP_lit12"; | |
3319 | case DW_OP_lit13: | |
3320 | return "DW_OP_lit13"; | |
3321 | case DW_OP_lit14: | |
3322 | return "DW_OP_lit14"; | |
3323 | case DW_OP_lit15: | |
3324 | return "DW_OP_lit15"; | |
3325 | case DW_OP_lit16: | |
3326 | return "DW_OP_lit16"; | |
3327 | case DW_OP_lit17: | |
3328 | return "DW_OP_lit17"; | |
3329 | case DW_OP_lit18: | |
3330 | return "DW_OP_lit18"; | |
3331 | case DW_OP_lit19: | |
3332 | return "DW_OP_lit19"; | |
3333 | case DW_OP_lit20: | |
3334 | return "DW_OP_lit20"; | |
3335 | case DW_OP_lit21: | |
3336 | return "DW_OP_lit21"; | |
3337 | case DW_OP_lit22: | |
3338 | return "DW_OP_lit22"; | |
3339 | case DW_OP_lit23: | |
3340 | return "DW_OP_lit23"; | |
3341 | case DW_OP_lit24: | |
3342 | return "DW_OP_lit24"; | |
3343 | case DW_OP_lit25: | |
3344 | return "DW_OP_lit25"; | |
3345 | case DW_OP_lit26: | |
3346 | return "DW_OP_lit26"; | |
3347 | case DW_OP_lit27: | |
3348 | return "DW_OP_lit27"; | |
3349 | case DW_OP_lit28: | |
3350 | return "DW_OP_lit28"; | |
3351 | case DW_OP_lit29: | |
3352 | return "DW_OP_lit29"; | |
3353 | case DW_OP_lit30: | |
3354 | return "DW_OP_lit30"; | |
3355 | case DW_OP_lit31: | |
3356 | return "DW_OP_lit31"; | |
3357 | case DW_OP_reg0: | |
3358 | return "DW_OP_reg0"; | |
3359 | case DW_OP_reg1: | |
3360 | return "DW_OP_reg1"; | |
3361 | case DW_OP_reg2: | |
3362 | return "DW_OP_reg2"; | |
3363 | case DW_OP_reg3: | |
3364 | return "DW_OP_reg3"; | |
3365 | case DW_OP_reg4: | |
3366 | return "DW_OP_reg4"; | |
3367 | case DW_OP_reg5: | |
3368 | return "DW_OP_reg5"; | |
3369 | case DW_OP_reg6: | |
3370 | return "DW_OP_reg6"; | |
3371 | case DW_OP_reg7: | |
3372 | return "DW_OP_reg7"; | |
3373 | case DW_OP_reg8: | |
3374 | return "DW_OP_reg8"; | |
3375 | case DW_OP_reg9: | |
3376 | return "DW_OP_reg9"; | |
3377 | case DW_OP_reg10: | |
3378 | return "DW_OP_reg10"; | |
3379 | case DW_OP_reg11: | |
3380 | return "DW_OP_reg11"; | |
3381 | case DW_OP_reg12: | |
3382 | return "DW_OP_reg12"; | |
3383 | case DW_OP_reg13: | |
3384 | return "DW_OP_reg13"; | |
3385 | case DW_OP_reg14: | |
3386 | return "DW_OP_reg14"; | |
3387 | case DW_OP_reg15: | |
3388 | return "DW_OP_reg15"; | |
3389 | case DW_OP_reg16: | |
3390 | return "DW_OP_reg16"; | |
3391 | case DW_OP_reg17: | |
3392 | return "DW_OP_reg17"; | |
3393 | case DW_OP_reg18: | |
3394 | return "DW_OP_reg18"; | |
3395 | case DW_OP_reg19: | |
3396 | return "DW_OP_reg19"; | |
3397 | case DW_OP_reg20: | |
3398 | return "DW_OP_reg20"; | |
3399 | case DW_OP_reg21: | |
3400 | return "DW_OP_reg21"; | |
3401 | case DW_OP_reg22: | |
3402 | return "DW_OP_reg22"; | |
3403 | case DW_OP_reg23: | |
3404 | return "DW_OP_reg23"; | |
3405 | case DW_OP_reg24: | |
3406 | return "DW_OP_reg24"; | |
3407 | case DW_OP_reg25: | |
3408 | return "DW_OP_reg25"; | |
3409 | case DW_OP_reg26: | |
3410 | return "DW_OP_reg26"; | |
3411 | case DW_OP_reg27: | |
3412 | return "DW_OP_reg27"; | |
3413 | case DW_OP_reg28: | |
3414 | return "DW_OP_reg28"; | |
3415 | case DW_OP_reg29: | |
3416 | return "DW_OP_reg29"; | |
3417 | case DW_OP_reg30: | |
3418 | return "DW_OP_reg30"; | |
3419 | case DW_OP_reg31: | |
3420 | return "DW_OP_reg31"; | |
3421 | case DW_OP_breg0: | |
3422 | return "DW_OP_breg0"; | |
3423 | case DW_OP_breg1: | |
3424 | return "DW_OP_breg1"; | |
3425 | case DW_OP_breg2: | |
3426 | return "DW_OP_breg2"; | |
3427 | case DW_OP_breg3: | |
3428 | return "DW_OP_breg3"; | |
3429 | case DW_OP_breg4: | |
3430 | return "DW_OP_breg4"; | |
3431 | case DW_OP_breg5: | |
3432 | return "DW_OP_breg5"; | |
3433 | case DW_OP_breg6: | |
3434 | return "DW_OP_breg6"; | |
3435 | case DW_OP_breg7: | |
3436 | return "DW_OP_breg7"; | |
3437 | case DW_OP_breg8: | |
3438 | return "DW_OP_breg8"; | |
3439 | case DW_OP_breg9: | |
3440 | return "DW_OP_breg9"; | |
3441 | case DW_OP_breg10: | |
3442 | return "DW_OP_breg10"; | |
3443 | case DW_OP_breg11: | |
3444 | return "DW_OP_breg11"; | |
3445 | case DW_OP_breg12: | |
3446 | return "DW_OP_breg12"; | |
3447 | case DW_OP_breg13: | |
3448 | return "DW_OP_breg13"; | |
3449 | case DW_OP_breg14: | |
3450 | return "DW_OP_breg14"; | |
3451 | case DW_OP_breg15: | |
3452 | return "DW_OP_breg15"; | |
3453 | case DW_OP_breg16: | |
3454 | return "DW_OP_breg16"; | |
3455 | case DW_OP_breg17: | |
3456 | return "DW_OP_breg17"; | |
3457 | case DW_OP_breg18: | |
3458 | return "DW_OP_breg18"; | |
3459 | case DW_OP_breg19: | |
3460 | return "DW_OP_breg19"; | |
3461 | case DW_OP_breg20: | |
3462 | return "DW_OP_breg20"; | |
3463 | case DW_OP_breg21: | |
3464 | return "DW_OP_breg21"; | |
3465 | case DW_OP_breg22: | |
3466 | return "DW_OP_breg22"; | |
3467 | case DW_OP_breg23: | |
3468 | return "DW_OP_breg23"; | |
3469 | case DW_OP_breg24: | |
3470 | return "DW_OP_breg24"; | |
3471 | case DW_OP_breg25: | |
3472 | return "DW_OP_breg25"; | |
3473 | case DW_OP_breg26: | |
3474 | return "DW_OP_breg26"; | |
3475 | case DW_OP_breg27: | |
3476 | return "DW_OP_breg27"; | |
3477 | case DW_OP_breg28: | |
3478 | return "DW_OP_breg28"; | |
3479 | case DW_OP_breg29: | |
3480 | return "DW_OP_breg29"; | |
3481 | case DW_OP_breg30: | |
3482 | return "DW_OP_breg30"; | |
3483 | case DW_OP_breg31: | |
3484 | return "DW_OP_breg31"; | |
3485 | case DW_OP_regx: | |
3486 | return "DW_OP_regx"; | |
3487 | case DW_OP_fbreg: | |
3488 | return "DW_OP_fbreg"; | |
3489 | case DW_OP_bregx: | |
3490 | return "DW_OP_bregx"; | |
3491 | case DW_OP_piece: | |
3492 | return "DW_OP_piece"; | |
3493 | case DW_OP_deref_size: | |
3494 | return "DW_OP_deref_size"; | |
3495 | case DW_OP_xderef_size: | |
3496 | return "DW_OP_xderef_size"; | |
3497 | case DW_OP_nop: | |
3498 | return "DW_OP_nop"; | |
3499 | default: | |
3500 | return "OP_<unknown>"; | |
a3f97cbb JW |
3501 | } |
3502 | } | |
3503 | ||
3f76745e | 3504 | /* Convert a DWARF type code into its string name. */ |
71dfc51f | 3505 | |
487a6e06 | 3506 | #if 0 |
d560ee52 | 3507 | static const char * |
3f76745e JM |
3508 | dwarf_type_encoding_name (enc) |
3509 | register unsigned enc; | |
a3f97cbb | 3510 | { |
3f76745e | 3511 | switch (enc) |
a3f97cbb | 3512 | { |
3f76745e JM |
3513 | case DW_ATE_address: |
3514 | return "DW_ATE_address"; | |
3515 | case DW_ATE_boolean: | |
3516 | return "DW_ATE_boolean"; | |
3517 | case DW_ATE_complex_float: | |
3518 | return "DW_ATE_complex_float"; | |
3519 | case DW_ATE_float: | |
3520 | return "DW_ATE_float"; | |
3521 | case DW_ATE_signed: | |
3522 | return "DW_ATE_signed"; | |
3523 | case DW_ATE_signed_char: | |
3524 | return "DW_ATE_signed_char"; | |
3525 | case DW_ATE_unsigned: | |
3526 | return "DW_ATE_unsigned"; | |
3527 | case DW_ATE_unsigned_char: | |
3528 | return "DW_ATE_unsigned_char"; | |
3529 | default: | |
3530 | return "DW_ATE_<unknown>"; | |
3531 | } | |
a3f97cbb | 3532 | } |
487a6e06 | 3533 | #endif |
3f76745e JM |
3534 | \f |
3535 | /* Determine the "ultimate origin" of a decl. The decl may be an inlined | |
3536 | instance of an inlined instance of a decl which is local to an inline | |
3537 | function, so we have to trace all of the way back through the origin chain | |
3538 | to find out what sort of node actually served as the original seed for the | |
3539 | given block. */ | |
a3f97cbb | 3540 | |
3f76745e JM |
3541 | static tree |
3542 | decl_ultimate_origin (decl) | |
3543 | register tree decl; | |
a3f97cbb | 3544 | { |
02e24c7a MM |
3545 | #ifdef ENABLE_CHECKING |
3546 | if (DECL_FROM_INLINE (DECL_ORIGIN (decl))) | |
3547 | /* Since the DECL_ABSTRACT_ORIGIN for a DECL is supposed to be the | |
3548 | most distant ancestor, this should never happen. */ | |
3549 | abort (); | |
3550 | #endif | |
3f76745e | 3551 | |
02e24c7a | 3552 | return DECL_ABSTRACT_ORIGIN (decl); |
a3f97cbb JW |
3553 | } |
3554 | ||
3f76745e JM |
3555 | /* Determine the "ultimate origin" of a block. The block may be an inlined |
3556 | instance of an inlined instance of a block which is local to an inline | |
3557 | function, so we have to trace all of the way back through the origin chain | |
3558 | to find out what sort of node actually served as the original seed for the | |
3559 | given block. */ | |
71dfc51f | 3560 | |
3f76745e JM |
3561 | static tree |
3562 | block_ultimate_origin (block) | |
3563 | register tree block; | |
a3f97cbb | 3564 | { |
3f76745e | 3565 | register tree immediate_origin = BLOCK_ABSTRACT_ORIGIN (block); |
71dfc51f | 3566 | |
3f76745e JM |
3567 | if (immediate_origin == NULL_TREE) |
3568 | return NULL_TREE; | |
3569 | else | |
3570 | { | |
3571 | register tree ret_val; | |
3572 | register tree lookahead = immediate_origin; | |
71dfc51f | 3573 | |
3f76745e JM |
3574 | do |
3575 | { | |
3576 | ret_val = lookahead; | |
3577 | lookahead = (TREE_CODE (ret_val) == BLOCK) | |
3578 | ? BLOCK_ABSTRACT_ORIGIN (ret_val) | |
3579 | : NULL; | |
3580 | } | |
3581 | while (lookahead != NULL && lookahead != ret_val); | |
3582 | ||
3583 | return ret_val; | |
3584 | } | |
a3f97cbb JW |
3585 | } |
3586 | ||
3f76745e JM |
3587 | /* Get the class to which DECL belongs, if any. In g++, the DECL_CONTEXT |
3588 | of a virtual function may refer to a base class, so we check the 'this' | |
3589 | parameter. */ | |
71dfc51f | 3590 | |
3f76745e JM |
3591 | static tree |
3592 | decl_class_context (decl) | |
3593 | tree decl; | |
a3f97cbb | 3594 | { |
3f76745e | 3595 | tree context = NULL_TREE; |
71dfc51f | 3596 | |
3f76745e JM |
3597 | if (TREE_CODE (decl) != FUNCTION_DECL || ! DECL_VINDEX (decl)) |
3598 | context = DECL_CONTEXT (decl); | |
3599 | else | |
3600 | context = TYPE_MAIN_VARIANT | |
3601 | (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))))); | |
71dfc51f | 3602 | |
3f76745e JM |
3603 | if (context && TREE_CODE_CLASS (TREE_CODE (context)) != 't') |
3604 | context = NULL_TREE; | |
3605 | ||
3606 | return context; | |
a3f97cbb JW |
3607 | } |
3608 | \f | |
a96c67ec JM |
3609 | /* Add an attribute/value pair to a DIE. We build the lists up in reverse |
3610 | addition order, and correct that in add_sibling_attributes. */ | |
71dfc51f RK |
3611 | |
3612 | static inline void | |
3f76745e JM |
3613 | add_dwarf_attr (die, attr) |
3614 | register dw_die_ref die; | |
3615 | register dw_attr_ref attr; | |
a3f97cbb | 3616 | { |
3f76745e | 3617 | if (die != NULL && attr != NULL) |
a3f97cbb | 3618 | { |
a96c67ec JM |
3619 | attr->dw_attr_next = die->die_attr; |
3620 | die->die_attr = attr; | |
a3f97cbb JW |
3621 | } |
3622 | } | |
3623 | ||
a96c67ec JM |
3624 | static inline dw_val_class |
3625 | AT_class (a) | |
3626 | dw_attr_ref a; | |
3627 | { | |
3628 | return a->dw_attr_val.val_class; | |
3629 | } | |
3630 | ||
3f76745e | 3631 | /* Add a flag value attribute to a DIE. */ |
71dfc51f | 3632 | |
3f76745e JM |
3633 | static inline void |
3634 | add_AT_flag (die, attr_kind, flag) | |
3635 | register dw_die_ref die; | |
3636 | register enum dwarf_attribute attr_kind; | |
3637 | register unsigned flag; | |
a3f97cbb | 3638 | { |
3f76745e | 3639 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3640 | |
3f76745e JM |
3641 | attr->dw_attr_next = NULL; |
3642 | attr->dw_attr = attr_kind; | |
3643 | attr->dw_attr_val.val_class = dw_val_class_flag; | |
3644 | attr->dw_attr_val.v.val_flag = flag; | |
3645 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3646 | } |
3647 | ||
a96c67ec JM |
3648 | static inline unsigned |
3649 | AT_flag (a) | |
3650 | register dw_attr_ref a; | |
3651 | { | |
3652 | if (a && AT_class (a) == dw_val_class_flag) | |
3653 | return a->dw_attr_val.v.val_flag; | |
3654 | ||
3655 | return 0; | |
3656 | } | |
3657 | ||
3f76745e | 3658 | /* Add a signed integer attribute value to a DIE. */ |
71dfc51f | 3659 | |
3f76745e JM |
3660 | static inline void |
3661 | add_AT_int (die, attr_kind, int_val) | |
3662 | register dw_die_ref die; | |
3663 | register enum dwarf_attribute attr_kind; | |
3664 | register long int int_val; | |
a3f97cbb | 3665 | { |
3f76745e JM |
3666 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3667 | ||
3668 | attr->dw_attr_next = NULL; | |
3669 | attr->dw_attr = attr_kind; | |
3670 | attr->dw_attr_val.val_class = dw_val_class_const; | |
3671 | attr->dw_attr_val.v.val_int = int_val; | |
3672 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3673 | } |
3674 | ||
a96c67ec JM |
3675 | static inline long int |
3676 | AT_int (a) | |
3677 | register dw_attr_ref a; | |
3678 | { | |
3679 | if (a && AT_class (a) == dw_val_class_const) | |
3680 | return a->dw_attr_val.v.val_int; | |
3681 | ||
3682 | return 0; | |
3683 | } | |
3684 | ||
3f76745e | 3685 | /* Add an unsigned integer attribute value to a DIE. */ |
71dfc51f | 3686 | |
3f76745e JM |
3687 | static inline void |
3688 | add_AT_unsigned (die, attr_kind, unsigned_val) | |
3689 | register dw_die_ref die; | |
3690 | register enum dwarf_attribute attr_kind; | |
3691 | register unsigned long unsigned_val; | |
a3f97cbb | 3692 | { |
3f76745e JM |
3693 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3694 | ||
3695 | attr->dw_attr_next = NULL; | |
3696 | attr->dw_attr = attr_kind; | |
3697 | attr->dw_attr_val.val_class = dw_val_class_unsigned_const; | |
3698 | attr->dw_attr_val.v.val_unsigned = unsigned_val; | |
3699 | add_dwarf_attr (die, attr); | |
a3f97cbb | 3700 | } |
71dfc51f | 3701 | |
a96c67ec JM |
3702 | static inline unsigned long |
3703 | AT_unsigned (a) | |
3704 | register dw_attr_ref a; | |
3705 | { | |
3706 | if (a && AT_class (a) == dw_val_class_unsigned_const) | |
3707 | return a->dw_attr_val.v.val_unsigned; | |
3708 | ||
3709 | return 0; | |
3710 | } | |
3711 | ||
3f76745e JM |
3712 | /* Add an unsigned double integer attribute value to a DIE. */ |
3713 | ||
3714 | static inline void | |
3715 | add_AT_long_long (die, attr_kind, val_hi, val_low) | |
a3f97cbb | 3716 | register dw_die_ref die; |
3f76745e JM |
3717 | register enum dwarf_attribute attr_kind; |
3718 | register unsigned long val_hi; | |
3719 | register unsigned long val_low; | |
a3f97cbb | 3720 | { |
3f76745e | 3721 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3722 | |
3f76745e JM |
3723 | attr->dw_attr_next = NULL; |
3724 | attr->dw_attr = attr_kind; | |
3725 | attr->dw_attr_val.val_class = dw_val_class_long_long; | |
3726 | attr->dw_attr_val.v.val_long_long.hi = val_hi; | |
3727 | attr->dw_attr_val.v.val_long_long.low = val_low; | |
3728 | add_dwarf_attr (die, attr); | |
3729 | } | |
71dfc51f | 3730 | |
3f76745e | 3731 | /* Add a floating point attribute value to a DIE and return it. */ |
71dfc51f | 3732 | |
3f76745e JM |
3733 | static inline void |
3734 | add_AT_float (die, attr_kind, length, array) | |
3735 | register dw_die_ref die; | |
3736 | register enum dwarf_attribute attr_kind; | |
3737 | register unsigned length; | |
3738 | register long *array; | |
3739 | { | |
3740 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
3741 | ||
3742 | attr->dw_attr_next = NULL; | |
3743 | attr->dw_attr = attr_kind; | |
3744 | attr->dw_attr_val.val_class = dw_val_class_float; | |
3745 | attr->dw_attr_val.v.val_float.length = length; | |
3746 | attr->dw_attr_val.v.val_float.array = array; | |
3747 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3748 | } |
3749 | ||
3f76745e | 3750 | /* Add a string attribute value to a DIE. */ |
71dfc51f | 3751 | |
3f76745e JM |
3752 | static inline void |
3753 | add_AT_string (die, attr_kind, str) | |
a3f97cbb | 3754 | register dw_die_ref die; |
3f76745e | 3755 | register enum dwarf_attribute attr_kind; |
d560ee52 | 3756 | register const char *str; |
a3f97cbb | 3757 | { |
3f76745e | 3758 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3759 | |
3f76745e JM |
3760 | attr->dw_attr_next = NULL; |
3761 | attr->dw_attr = attr_kind; | |
3762 | attr->dw_attr_val.val_class = dw_val_class_str; | |
3763 | attr->dw_attr_val.v.val_str = xstrdup (str); | |
3764 | add_dwarf_attr (die, attr); | |
3765 | } | |
71dfc51f | 3766 | |
a96c67ec JM |
3767 | static inline const char * |
3768 | AT_string (a) | |
3769 | register dw_attr_ref a; | |
3770 | { | |
3771 | if (a && AT_class (a) == dw_val_class_str) | |
3772 | return a->dw_attr_val.v.val_str; | |
3773 | ||
3774 | return NULL; | |
3775 | } | |
3776 | ||
3f76745e | 3777 | /* Add a DIE reference attribute value to a DIE. */ |
71dfc51f | 3778 | |
3f76745e JM |
3779 | static inline void |
3780 | add_AT_die_ref (die, attr_kind, targ_die) | |
3781 | register dw_die_ref die; | |
3782 | register enum dwarf_attribute attr_kind; | |
3783 | register dw_die_ref targ_die; | |
3784 | { | |
3785 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3786 | |
3f76745e JM |
3787 | attr->dw_attr_next = NULL; |
3788 | attr->dw_attr = attr_kind; | |
3789 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
3790 | attr->dw_attr_val.v.val_die_ref = targ_die; | |
3791 | add_dwarf_attr (die, attr); | |
3792 | } | |
b1ccbc24 | 3793 | |
a96c67ec JM |
3794 | static inline dw_die_ref |
3795 | AT_ref (a) | |
3796 | register dw_attr_ref a; | |
3797 | { | |
3798 | if (a && AT_class (a) == dw_val_class_die_ref) | |
3799 | return a->dw_attr_val.v.val_die_ref; | |
3800 | ||
3801 | return NULL; | |
3802 | } | |
3803 | ||
3f76745e | 3804 | /* Add an FDE reference attribute value to a DIE. */ |
b1ccbc24 | 3805 | |
3f76745e JM |
3806 | static inline void |
3807 | add_AT_fde_ref (die, attr_kind, targ_fde) | |
3808 | register dw_die_ref die; | |
3809 | register enum dwarf_attribute attr_kind; | |
3810 | register unsigned targ_fde; | |
3811 | { | |
3812 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
b1ccbc24 | 3813 | |
3f76745e JM |
3814 | attr->dw_attr_next = NULL; |
3815 | attr->dw_attr = attr_kind; | |
3816 | attr->dw_attr_val.val_class = dw_val_class_fde_ref; | |
3817 | attr->dw_attr_val.v.val_fde_index = targ_fde; | |
3818 | add_dwarf_attr (die, attr); | |
a3f97cbb | 3819 | } |
71dfc51f | 3820 | |
3f76745e | 3821 | /* Add a location description attribute value to a DIE. */ |
71dfc51f | 3822 | |
3f76745e JM |
3823 | static inline void |
3824 | add_AT_loc (die, attr_kind, loc) | |
3825 | register dw_die_ref die; | |
3826 | register enum dwarf_attribute attr_kind; | |
3827 | register dw_loc_descr_ref loc; | |
3828 | { | |
3829 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3830 | |
3f76745e JM |
3831 | attr->dw_attr_next = NULL; |
3832 | attr->dw_attr = attr_kind; | |
3833 | attr->dw_attr_val.val_class = dw_val_class_loc; | |
3834 | attr->dw_attr_val.v.val_loc = loc; | |
3835 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3836 | } |
3837 | ||
a96c67ec JM |
3838 | static inline dw_loc_descr_ref |
3839 | AT_loc (a) | |
3840 | register dw_attr_ref a; | |
3841 | { | |
3842 | if (a && AT_class (a) == dw_val_class_loc) | |
3843 | return a->dw_attr_val.v.val_loc; | |
3844 | ||
3845 | return NULL; | |
3846 | } | |
3847 | ||
3f76745e | 3848 | /* Add an address constant attribute value to a DIE. */ |
71dfc51f | 3849 | |
3f76745e JM |
3850 | static inline void |
3851 | add_AT_addr (die, attr_kind, addr) | |
3852 | register dw_die_ref die; | |
3853 | register enum dwarf_attribute attr_kind; | |
3854 | char *addr; | |
a3f97cbb | 3855 | { |
3f76745e | 3856 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3857 | |
3f76745e JM |
3858 | attr->dw_attr_next = NULL; |
3859 | attr->dw_attr = attr_kind; | |
3860 | attr->dw_attr_val.val_class = dw_val_class_addr; | |
3861 | attr->dw_attr_val.v.val_addr = addr; | |
3862 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3863 | } |
3864 | ||
a96c67ec JM |
3865 | static inline const char * |
3866 | AT_addr (a) | |
3867 | register dw_attr_ref a; | |
3868 | { | |
3869 | if (a && AT_class (a) == dw_val_class_addr) | |
3870 | return a->dw_attr_val.v.val_addr; | |
3871 | ||
3872 | return NULL; | |
3873 | } | |
3874 | ||
3f76745e | 3875 | /* Add a label identifier attribute value to a DIE. */ |
71dfc51f | 3876 | |
3f76745e JM |
3877 | static inline void |
3878 | add_AT_lbl_id (die, attr_kind, lbl_id) | |
3879 | register dw_die_ref die; | |
3880 | register enum dwarf_attribute attr_kind; | |
3881 | register char *lbl_id; | |
a3f97cbb | 3882 | { |
3f76745e | 3883 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3884 | |
3f76745e JM |
3885 | attr->dw_attr_next = NULL; |
3886 | attr->dw_attr = attr_kind; | |
3887 | attr->dw_attr_val.val_class = dw_val_class_lbl_id; | |
3888 | attr->dw_attr_val.v.val_lbl_id = xstrdup (lbl_id); | |
3889 | add_dwarf_attr (die, attr); | |
3890 | } | |
71dfc51f | 3891 | |
3f76745e JM |
3892 | /* Add a section offset attribute value to a DIE. */ |
3893 | ||
3894 | static inline void | |
8b790721 | 3895 | add_AT_lbl_offset (die, attr_kind, label) |
3f76745e JM |
3896 | register dw_die_ref die; |
3897 | register enum dwarf_attribute attr_kind; | |
8b790721 | 3898 | register char *label; |
3f76745e JM |
3899 | { |
3900 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3901 | |
3f76745e JM |
3902 | attr->dw_attr_next = NULL; |
3903 | attr->dw_attr = attr_kind; | |
8b790721 | 3904 | attr->dw_attr_val.val_class = dw_val_class_lbl_offset; |
a96c67ec | 3905 | attr->dw_attr_val.v.val_lbl_id = xstrdup (label); |
3f76745e JM |
3906 | add_dwarf_attr (die, attr); |
3907 | ||
a3f97cbb JW |
3908 | } |
3909 | ||
a96c67ec JM |
3910 | static inline const char * |
3911 | AT_lbl (a) | |
3912 | register dw_attr_ref a; | |
a3f97cbb | 3913 | { |
a96c67ec JM |
3914 | if (a && (AT_class (a) == dw_val_class_lbl_id |
3915 | || AT_class (a) == dw_val_class_lbl_offset)) | |
3916 | return a->dw_attr_val.v.val_lbl_id; | |
71dfc51f | 3917 | |
a96c67ec | 3918 | return NULL; |
a3f97cbb JW |
3919 | } |
3920 | ||
3f76745e | 3921 | /* Get the attribute of type attr_kind. */ |
71dfc51f | 3922 | |
3f76745e JM |
3923 | static inline dw_attr_ref |
3924 | get_AT (die, attr_kind) | |
3925 | register dw_die_ref die; | |
3926 | register enum dwarf_attribute attr_kind; | |
f37230f0 | 3927 | { |
3f76745e JM |
3928 | register dw_attr_ref a; |
3929 | register dw_die_ref spec = NULL; | |
3930 | ||
3931 | if (die != NULL) | |
3932 | { | |
3933 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
3934 | { | |
3935 | if (a->dw_attr == attr_kind) | |
3936 | return a; | |
71dfc51f | 3937 | |
3f76745e JM |
3938 | if (a->dw_attr == DW_AT_specification |
3939 | || a->dw_attr == DW_AT_abstract_origin) | |
a96c67ec | 3940 | spec = AT_ref (a); |
3f76745e | 3941 | } |
71dfc51f | 3942 | |
3f76745e JM |
3943 | if (spec) |
3944 | return get_AT (spec, attr_kind); | |
3945 | } | |
3946 | ||
3947 | return NULL; | |
f37230f0 JM |
3948 | } |
3949 | ||
3f76745e JM |
3950 | /* Return the "low pc" attribute value, typically associated with |
3951 | a subprogram DIE. Return null if the "low pc" attribute is | |
3952 | either not prsent, or if it cannot be represented as an | |
3953 | assembler label identifier. */ | |
71dfc51f | 3954 | |
a96c67ec | 3955 | static inline const char * |
3f76745e JM |
3956 | get_AT_low_pc (die) |
3957 | register dw_die_ref die; | |
7e23cb16 | 3958 | { |
3f76745e | 3959 | register dw_attr_ref a = get_AT (die, DW_AT_low_pc); |
a96c67ec | 3960 | return AT_lbl (a); |
7e23cb16 JM |
3961 | } |
3962 | ||
3f76745e JM |
3963 | /* Return the "high pc" attribute value, typically associated with |
3964 | a subprogram DIE. Return null if the "high pc" attribute is | |
3965 | either not prsent, or if it cannot be represented as an | |
3966 | assembler label identifier. */ | |
71dfc51f | 3967 | |
a96c67ec | 3968 | static inline const char * |
3f76745e | 3969 | get_AT_hi_pc (die) |
a3f97cbb JW |
3970 | register dw_die_ref die; |
3971 | { | |
3f76745e | 3972 | register dw_attr_ref a = get_AT (die, DW_AT_high_pc); |
a96c67ec | 3973 | return AT_lbl (a); |
3f76745e JM |
3974 | } |
3975 | ||
3976 | /* Return the value of the string attribute designated by ATTR_KIND, or | |
3977 | NULL if it is not present. */ | |
71dfc51f | 3978 | |
a96c67ec | 3979 | static inline const char * |
3f76745e JM |
3980 | get_AT_string (die, attr_kind) |
3981 | register dw_die_ref die; | |
3982 | register enum dwarf_attribute attr_kind; | |
3983 | { | |
3984 | register dw_attr_ref a = get_AT (die, attr_kind); | |
a96c67ec | 3985 | return AT_string (a); |
a3f97cbb JW |
3986 | } |
3987 | ||
3f76745e JM |
3988 | /* Return the value of the flag attribute designated by ATTR_KIND, or -1 |
3989 | if it is not present. */ | |
71dfc51f | 3990 | |
3f76745e JM |
3991 | static inline int |
3992 | get_AT_flag (die, attr_kind) | |
3993 | register dw_die_ref die; | |
3994 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 3995 | { |
3f76745e | 3996 | register dw_attr_ref a = get_AT (die, attr_kind); |
a96c67ec | 3997 | return AT_flag (a); |
a3f97cbb JW |
3998 | } |
3999 | ||
3f76745e JM |
4000 | /* Return the value of the unsigned attribute designated by ATTR_KIND, or 0 |
4001 | if it is not present. */ | |
71dfc51f | 4002 | |
3f76745e JM |
4003 | static inline unsigned |
4004 | get_AT_unsigned (die, attr_kind) | |
4005 | register dw_die_ref die; | |
4006 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 4007 | { |
3f76745e | 4008 | register dw_attr_ref a = get_AT (die, attr_kind); |
a96c67ec JM |
4009 | return AT_unsigned (a); |
4010 | } | |
71dfc51f | 4011 | |
a96c67ec JM |
4012 | static inline dw_die_ref |
4013 | get_AT_ref (die, attr_kind) | |
4014 | dw_die_ref die; | |
4015 | register enum dwarf_attribute attr_kind; | |
4016 | { | |
4017 | register dw_attr_ref a = get_AT (die, attr_kind); | |
4018 | return AT_ref (a); | |
3f76745e | 4019 | } |
71dfc51f | 4020 | |
3f76745e JM |
4021 | static inline int |
4022 | is_c_family () | |
4023 | { | |
4024 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 4025 | |
3f76745e JM |
4026 | return (lang == DW_LANG_C || lang == DW_LANG_C89 |
4027 | || lang == DW_LANG_C_plus_plus); | |
4028 | } | |
71dfc51f | 4029 | |
3f76745e JM |
4030 | static inline int |
4031 | is_fortran () | |
4032 | { | |
4033 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 4034 | |
3f76745e JM |
4035 | return (lang == DW_LANG_Fortran77 || lang == DW_LANG_Fortran90); |
4036 | } | |
71dfc51f | 4037 | |
3f76745e | 4038 | /* Remove the specified attribute if present. */ |
71dfc51f | 4039 | |
3f76745e JM |
4040 | static inline void |
4041 | remove_AT (die, attr_kind) | |
4042 | register dw_die_ref die; | |
4043 | register enum dwarf_attribute attr_kind; | |
4044 | { | |
a96c67ec | 4045 | register dw_attr_ref *p; |
6d649d26 | 4046 | register dw_attr_ref removed = NULL; |
a3f97cbb | 4047 | |
3f76745e JM |
4048 | if (die != NULL) |
4049 | { | |
a96c67ec JM |
4050 | for (p = &(die->die_attr); *p; p = &((*p)->dw_attr_next)) |
4051 | if ((*p)->dw_attr == attr_kind) | |
4052 | { | |
4053 | removed = *p; | |
4054 | *p = (*p)->dw_attr_next; | |
4055 | break; | |
4056 | } | |
71dfc51f | 4057 | |
a96c67ec JM |
4058 | if (removed != 0) |
4059 | { | |
4060 | switch (AT_class (removed)) | |
3f76745e | 4061 | { |
a96c67ec JM |
4062 | case dw_val_class_addr: |
4063 | case dw_val_class_str: | |
4064 | case dw_val_class_lbl_id: | |
4065 | case dw_val_class_lbl_offset: | |
4066 | free (removed->dw_attr_val.v.val_str); | |
4067 | break; | |
71dfc51f | 4068 | |
a96c67ec | 4069 | default: |
3f76745e JM |
4070 | break; |
4071 | } | |
71dfc51f | 4072 | |
a96c67ec JM |
4073 | free (removed); |
4074 | } | |
3f76745e JM |
4075 | } |
4076 | } | |
71dfc51f | 4077 | |
3f76745e | 4078 | /* Discard the children of this DIE. */ |
71dfc51f | 4079 | |
3f76745e JM |
4080 | static inline void |
4081 | remove_children (die) | |
4082 | register dw_die_ref die; | |
4083 | { | |
4084 | register dw_die_ref child_die = die->die_child; | |
4085 | ||
4086 | die->die_child = NULL; | |
3f76745e JM |
4087 | |
4088 | while (child_die != NULL) | |
a3f97cbb | 4089 | { |
3f76745e JM |
4090 | register dw_die_ref tmp_die = child_die; |
4091 | register dw_attr_ref a; | |
71dfc51f | 4092 | |
3f76745e JM |
4093 | child_die = child_die->die_sib; |
4094 | ||
4095 | for (a = tmp_die->die_attr; a != NULL; ) | |
a3f97cbb | 4096 | { |
3f76745e | 4097 | register dw_attr_ref tmp_a = a; |
71dfc51f | 4098 | |
3f76745e JM |
4099 | a = a->dw_attr_next; |
4100 | free (tmp_a); | |
a3f97cbb | 4101 | } |
71dfc51f | 4102 | |
3f76745e JM |
4103 | free (tmp_die); |
4104 | } | |
4105 | } | |
71dfc51f | 4106 | |
a96c67ec JM |
4107 | /* Add a child DIE below its parent. We build the lists up in reverse |
4108 | addition order, and correct that in add_sibling_attributes. */ | |
71dfc51f | 4109 | |
3f76745e JM |
4110 | static inline void |
4111 | add_child_die (die, child_die) | |
4112 | register dw_die_ref die; | |
4113 | register dw_die_ref child_die; | |
4114 | { | |
4115 | if (die != NULL && child_die != NULL) | |
e90b62db | 4116 | { |
3a88cbd1 JL |
4117 | if (die == child_die) |
4118 | abort (); | |
3f76745e | 4119 | child_die->die_parent = die; |
a96c67ec JM |
4120 | child_die->die_sib = die->die_child; |
4121 | die->die_child = child_die; | |
3f76745e JM |
4122 | } |
4123 | } | |
4124 | ||
4125 | /* Return a pointer to a newly created DIE node. */ | |
4126 | ||
4127 | static inline dw_die_ref | |
4128 | new_die (tag_value, parent_die) | |
4129 | register enum dwarf_tag tag_value; | |
4130 | register dw_die_ref parent_die; | |
4131 | { | |
4132 | register dw_die_ref die = (dw_die_ref) xmalloc (sizeof (die_node)); | |
4133 | ||
4134 | die->die_tag = tag_value; | |
4135 | die->die_abbrev = 0; | |
4136 | die->die_offset = 0; | |
4137 | die->die_child = NULL; | |
4138 | die->die_parent = NULL; | |
4139 | die->die_sib = NULL; | |
3f76745e | 4140 | die->die_attr = NULL; |
3f76745e JM |
4141 | |
4142 | if (parent_die != NULL) | |
4143 | add_child_die (parent_die, die); | |
4144 | else | |
ef76d03b JW |
4145 | { |
4146 | limbo_die_node *limbo_node; | |
4147 | ||
4148 | limbo_node = (limbo_die_node *) xmalloc (sizeof (limbo_die_node)); | |
4149 | limbo_node->die = die; | |
4150 | limbo_node->next = limbo_die_list; | |
4151 | limbo_die_list = limbo_node; | |
4152 | } | |
71dfc51f | 4153 | |
3f76745e JM |
4154 | return die; |
4155 | } | |
71dfc51f | 4156 | |
3f76745e | 4157 | /* Return the DIE associated with the given type specifier. */ |
71dfc51f | 4158 | |
3f76745e JM |
4159 | static inline dw_die_ref |
4160 | lookup_type_die (type) | |
4161 | register tree type; | |
4162 | { | |
4163 | return (dw_die_ref) TYPE_SYMTAB_POINTER (type); | |
4164 | } | |
e90b62db | 4165 | |
3f76745e | 4166 | /* Equate a DIE to a given type specifier. */ |
71dfc51f | 4167 | |
3f76745e JM |
4168 | static void |
4169 | equate_type_number_to_die (type, type_die) | |
4170 | register tree type; | |
4171 | register dw_die_ref type_die; | |
4172 | { | |
4173 | TYPE_SYMTAB_POINTER (type) = (char *) type_die; | |
4174 | } | |
71dfc51f | 4175 | |
3f76745e | 4176 | /* Return the DIE associated with a given declaration. */ |
71dfc51f | 4177 | |
3f76745e JM |
4178 | static inline dw_die_ref |
4179 | lookup_decl_die (decl) | |
4180 | register tree decl; | |
4181 | { | |
4182 | register unsigned decl_id = DECL_UID (decl); | |
4183 | ||
4184 | return (decl_id < decl_die_table_in_use | |
4185 | ? decl_die_table[decl_id] : NULL); | |
a3f97cbb JW |
4186 | } |
4187 | ||
3f76745e | 4188 | /* Equate a DIE to a particular declaration. */ |
71dfc51f | 4189 | |
3f76745e JM |
4190 | static void |
4191 | equate_decl_number_to_die (decl, decl_die) | |
4192 | register tree decl; | |
4193 | register dw_die_ref decl_die; | |
a3f97cbb | 4194 | { |
3f76745e | 4195 | register unsigned decl_id = DECL_UID (decl); |
3f76745e | 4196 | register unsigned num_allocated; |
d291dd49 | 4197 | |
3f76745e | 4198 | if (decl_id >= decl_die_table_allocated) |
a3f97cbb | 4199 | { |
3f76745e JM |
4200 | num_allocated |
4201 | = ((decl_id + 1 + DECL_DIE_TABLE_INCREMENT - 1) | |
4202 | / DECL_DIE_TABLE_INCREMENT) | |
4203 | * DECL_DIE_TABLE_INCREMENT; | |
4204 | ||
4205 | decl_die_table | |
4206 | = (dw_die_ref *) xrealloc (decl_die_table, | |
4207 | sizeof (dw_die_ref) * num_allocated); | |
4208 | ||
4209 | bzero ((char *) &decl_die_table[decl_die_table_allocated], | |
4210 | (num_allocated - decl_die_table_allocated) * sizeof (dw_die_ref)); | |
4211 | decl_die_table_allocated = num_allocated; | |
a3f97cbb | 4212 | } |
71dfc51f | 4213 | |
3f76745e JM |
4214 | if (decl_id >= decl_die_table_in_use) |
4215 | decl_die_table_in_use = (decl_id + 1); | |
4216 | ||
4217 | decl_die_table[decl_id] = decl_die; | |
a3f97cbb JW |
4218 | } |
4219 | ||
3f76745e JM |
4220 | /* Return a pointer to a newly allocated location description. Location |
4221 | descriptions are simple expression terms that can be strung | |
4222 | together to form more complicated location (address) descriptions. */ | |
71dfc51f | 4223 | |
3f76745e JM |
4224 | static inline dw_loc_descr_ref |
4225 | new_loc_descr (op, oprnd1, oprnd2) | |
4226 | register enum dwarf_location_atom op; | |
4227 | register unsigned long oprnd1; | |
4228 | register unsigned long oprnd2; | |
a3f97cbb | 4229 | { |
3f76745e JM |
4230 | register dw_loc_descr_ref descr |
4231 | = (dw_loc_descr_ref) xmalloc (sizeof (dw_loc_descr_node)); | |
71dfc51f | 4232 | |
3f76745e JM |
4233 | descr->dw_loc_next = NULL; |
4234 | descr->dw_loc_opc = op; | |
4235 | descr->dw_loc_oprnd1.val_class = dw_val_class_unsigned_const; | |
4236 | descr->dw_loc_oprnd1.v.val_unsigned = oprnd1; | |
4237 | descr->dw_loc_oprnd2.val_class = dw_val_class_unsigned_const; | |
4238 | descr->dw_loc_oprnd2.v.val_unsigned = oprnd2; | |
71dfc51f | 4239 | |
3f76745e | 4240 | return descr; |
a3f97cbb | 4241 | } |
71dfc51f | 4242 | |
3f76745e JM |
4243 | /* Add a location description term to a location description expression. */ |
4244 | ||
4245 | static inline void | |
4246 | add_loc_descr (list_head, descr) | |
4247 | register dw_loc_descr_ref *list_head; | |
4248 | register dw_loc_descr_ref descr; | |
a3f97cbb | 4249 | { |
3f76745e | 4250 | register dw_loc_descr_ref *d; |
71dfc51f | 4251 | |
3f76745e JM |
4252 | /* Find the end of the chain. */ |
4253 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) | |
4254 | ; | |
71dfc51f | 4255 | |
3f76745e JM |
4256 | *d = descr; |
4257 | } | |
4258 | \f | |
4259 | /* Keep track of the number of spaces used to indent the | |
4260 | output of the debugging routines that print the structure of | |
4261 | the DIE internal representation. */ | |
4262 | static int print_indent; | |
71dfc51f | 4263 | |
3f76745e JM |
4264 | /* Indent the line the number of spaces given by print_indent. */ |
4265 | ||
4266 | static inline void | |
4267 | print_spaces (outfile) | |
4268 | FILE *outfile; | |
4269 | { | |
4270 | fprintf (outfile, "%*s", print_indent, ""); | |
a3f97cbb JW |
4271 | } |
4272 | ||
956d6950 | 4273 | /* Print the information associated with a given DIE, and its children. |
3f76745e | 4274 | This routine is a debugging aid only. */ |
71dfc51f | 4275 | |
a3f97cbb | 4276 | static void |
3f76745e JM |
4277 | print_die (die, outfile) |
4278 | dw_die_ref die; | |
4279 | FILE *outfile; | |
a3f97cbb | 4280 | { |
3f76745e JM |
4281 | register dw_attr_ref a; |
4282 | register dw_die_ref c; | |
71dfc51f | 4283 | |
3f76745e | 4284 | print_spaces (outfile); |
2d8b0f3a | 4285 | fprintf (outfile, "DIE %4lu: %s\n", |
3f76745e JM |
4286 | die->die_offset, dwarf_tag_name (die->die_tag)); |
4287 | print_spaces (outfile); | |
2d8b0f3a JL |
4288 | fprintf (outfile, " abbrev id: %lu", die->die_abbrev); |
4289 | fprintf (outfile, " offset: %lu\n", die->die_offset); | |
3f76745e JM |
4290 | |
4291 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
a3f97cbb | 4292 | { |
3f76745e JM |
4293 | print_spaces (outfile); |
4294 | fprintf (outfile, " %s: ", dwarf_attr_name (a->dw_attr)); | |
4295 | ||
a96c67ec | 4296 | switch (AT_class (a)) |
3f76745e JM |
4297 | { |
4298 | case dw_val_class_addr: | |
4299 | fprintf (outfile, "address"); | |
4300 | break; | |
4301 | case dw_val_class_loc: | |
4302 | fprintf (outfile, "location descriptor"); | |
4303 | break; | |
4304 | case dw_val_class_const: | |
a96c67ec | 4305 | fprintf (outfile, "%ld", AT_int (a)); |
3f76745e JM |
4306 | break; |
4307 | case dw_val_class_unsigned_const: | |
a96c67ec | 4308 | fprintf (outfile, "%lu", AT_unsigned (a)); |
3f76745e JM |
4309 | break; |
4310 | case dw_val_class_long_long: | |
2d8b0f3a | 4311 | fprintf (outfile, "constant (%lu,%lu)", |
3f76745e JM |
4312 | a->dw_attr_val.v.val_long_long.hi, |
4313 | a->dw_attr_val.v.val_long_long.low); | |
4314 | break; | |
4315 | case dw_val_class_float: | |
4316 | fprintf (outfile, "floating-point constant"); | |
4317 | break; | |
4318 | case dw_val_class_flag: | |
a96c67ec | 4319 | fprintf (outfile, "%u", AT_flag (a)); |
3f76745e JM |
4320 | break; |
4321 | case dw_val_class_die_ref: | |
a96c67ec JM |
4322 | if (AT_ref (a) != NULL) |
4323 | fprintf (outfile, "die -> %lu", AT_ref (a)->die_offset); | |
3f76745e JM |
4324 | else |
4325 | fprintf (outfile, "die -> <null>"); | |
4326 | break; | |
4327 | case dw_val_class_lbl_id: | |
8b790721 | 4328 | case dw_val_class_lbl_offset: |
a96c67ec | 4329 | fprintf (outfile, "label: %s", AT_lbl (a)); |
3f76745e | 4330 | break; |
3f76745e | 4331 | case dw_val_class_str: |
a96c67ec JM |
4332 | if (AT_string (a) != NULL) |
4333 | fprintf (outfile, "\"%s\"", AT_string (a)); | |
3f76745e JM |
4334 | else |
4335 | fprintf (outfile, "<null>"); | |
4336 | break; | |
e9a25f70 JL |
4337 | default: |
4338 | break; | |
3f76745e JM |
4339 | } |
4340 | ||
4341 | fprintf (outfile, "\n"); | |
4342 | } | |
4343 | ||
4344 | if (die->die_child != NULL) | |
4345 | { | |
4346 | print_indent += 4; | |
4347 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4348 | print_die (c, outfile); | |
71dfc51f | 4349 | |
3f76745e | 4350 | print_indent -= 4; |
a3f97cbb | 4351 | } |
a3f97cbb JW |
4352 | } |
4353 | ||
3f76745e JM |
4354 | /* Print the contents of the source code line number correspondence table. |
4355 | This routine is a debugging aid only. */ | |
71dfc51f | 4356 | |
3f76745e JM |
4357 | static void |
4358 | print_dwarf_line_table (outfile) | |
4359 | FILE *outfile; | |
a3f97cbb | 4360 | { |
3f76745e JM |
4361 | register unsigned i; |
4362 | register dw_line_info_ref line_info; | |
4363 | ||
4364 | fprintf (outfile, "\n\nDWARF source line information\n"); | |
4365 | for (i = 1; i < line_info_table_in_use; ++i) | |
a3f97cbb | 4366 | { |
3f76745e JM |
4367 | line_info = &line_info_table[i]; |
4368 | fprintf (outfile, "%5d: ", i); | |
4369 | fprintf (outfile, "%-20s", file_table[line_info->dw_file_num]); | |
2d8b0f3a | 4370 | fprintf (outfile, "%6ld", line_info->dw_line_num); |
3f76745e | 4371 | fprintf (outfile, "\n"); |
a3f97cbb | 4372 | } |
3f76745e JM |
4373 | |
4374 | fprintf (outfile, "\n\n"); | |
f37230f0 JM |
4375 | } |
4376 | ||
3f76745e JM |
4377 | /* Print the information collected for a given DIE. */ |
4378 | ||
4379 | void | |
4380 | debug_dwarf_die (die) | |
4381 | dw_die_ref die; | |
4382 | { | |
4383 | print_die (die, stderr); | |
4384 | } | |
4385 | ||
4386 | /* Print all DWARF information collected for the compilation unit. | |
4387 | This routine is a debugging aid only. */ | |
4388 | ||
4389 | void | |
4390 | debug_dwarf () | |
4391 | { | |
4392 | print_indent = 0; | |
4393 | print_die (comp_unit_die, stderr); | |
b2244e22 JW |
4394 | if (! DWARF2_ASM_LINE_DEBUG_INFO) |
4395 | print_dwarf_line_table (stderr); | |
3f76745e JM |
4396 | } |
4397 | \f | |
a96c67ec JM |
4398 | /* We build up the lists of children and attributes by pushing new ones |
4399 | onto the beginning of the list. Reverse the lists for DIE so that | |
4400 | they are in order of addition. */ | |
71dfc51f | 4401 | |
f37230f0 | 4402 | static void |
a96c67ec | 4403 | reverse_die_lists (die) |
3f76745e | 4404 | register dw_die_ref die; |
f37230f0 | 4405 | { |
a96c67ec JM |
4406 | register dw_die_ref c, cp, cn; |
4407 | register dw_attr_ref a, ap, an; | |
71dfc51f | 4408 | |
a96c67ec JM |
4409 | for (a = die->die_attr, ap = 0; a; a = an) |
4410 | { | |
4411 | an = a->dw_attr_next; | |
4412 | a->dw_attr_next = ap; | |
4413 | ap = a; | |
4414 | } | |
4415 | die->die_attr = ap; | |
71dfc51f | 4416 | |
a96c67ec JM |
4417 | for (c = die->die_child, cp = 0; c; c = cn) |
4418 | { | |
4419 | cn = c->die_sib; | |
4420 | c->die_sib = cp; | |
4421 | cp = c; | |
3f76745e | 4422 | } |
a96c67ec JM |
4423 | die->die_child = cp; |
4424 | } | |
4425 | ||
4426 | /* Traverse the DIE, reverse its lists of attributes and children, and | |
4427 | add a sibling attribute if it may have the effect of speeding up | |
4428 | access to siblings. To save some space, avoid generating sibling | |
4429 | attributes for DIE's without children. */ | |
4430 | ||
4431 | static void | |
4432 | add_sibling_attributes (die) | |
4433 | register dw_die_ref die; | |
4434 | { | |
4435 | register dw_die_ref c; | |
4436 | ||
4437 | reverse_die_lists (die); | |
4438 | ||
4439 | if (die != comp_unit_die && die->die_sib && die->die_child != NULL) | |
4440 | /* Add the sibling link to the front of the attribute list. */ | |
4441 | add_AT_die_ref (die, DW_AT_sibling, die->die_sib); | |
3f76745e JM |
4442 | |
4443 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4444 | add_sibling_attributes (c); | |
a3f97cbb JW |
4445 | } |
4446 | ||
3f76745e JM |
4447 | /* The format of each DIE (and its attribute value pairs) |
4448 | is encoded in an abbreviation table. This routine builds the | |
4449 | abbreviation table and assigns a unique abbreviation id for | |
4450 | each abbreviation entry. The children of each die are visited | |
4451 | recursively. */ | |
71dfc51f | 4452 | |
a3f97cbb | 4453 | static void |
3f76745e JM |
4454 | build_abbrev_table (die) |
4455 | register dw_die_ref die; | |
a3f97cbb | 4456 | { |
3f76745e JM |
4457 | register unsigned long abbrev_id; |
4458 | register unsigned long n_alloc; | |
4459 | register dw_die_ref c; | |
4460 | register dw_attr_ref d_attr, a_attr; | |
a3f97cbb JW |
4461 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) |
4462 | { | |
4463 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 4464 | |
3f76745e JM |
4465 | if (abbrev->die_tag == die->die_tag) |
4466 | { | |
4467 | if ((abbrev->die_child != NULL) == (die->die_child != NULL)) | |
4468 | { | |
4469 | a_attr = abbrev->die_attr; | |
4470 | d_attr = die->die_attr; | |
71dfc51f | 4471 | |
3f76745e JM |
4472 | while (a_attr != NULL && d_attr != NULL) |
4473 | { | |
4474 | if ((a_attr->dw_attr != d_attr->dw_attr) | |
a96c67ec | 4475 | || (value_format (a_attr) != value_format (d_attr))) |
3f76745e | 4476 | break; |
71dfc51f | 4477 | |
3f76745e JM |
4478 | a_attr = a_attr->dw_attr_next; |
4479 | d_attr = d_attr->dw_attr_next; | |
4480 | } | |
71dfc51f | 4481 | |
3f76745e JM |
4482 | if (a_attr == NULL && d_attr == NULL) |
4483 | break; | |
4484 | } | |
4485 | } | |
4486 | } | |
71dfc51f | 4487 | |
3f76745e JM |
4488 | if (abbrev_id >= abbrev_die_table_in_use) |
4489 | { | |
4490 | if (abbrev_die_table_in_use >= abbrev_die_table_allocated) | |
a3f97cbb | 4491 | { |
3f76745e JM |
4492 | n_alloc = abbrev_die_table_allocated + ABBREV_DIE_TABLE_INCREMENT; |
4493 | abbrev_die_table | |
c760091a | 4494 | = (dw_die_ref *) xrealloc (abbrev_die_table, |
966f5dff | 4495 | sizeof (dw_die_ref) * n_alloc); |
71dfc51f | 4496 | |
3f76745e JM |
4497 | bzero ((char *) &abbrev_die_table[abbrev_die_table_allocated], |
4498 | (n_alloc - abbrev_die_table_allocated) * sizeof (dw_die_ref)); | |
4499 | abbrev_die_table_allocated = n_alloc; | |
a3f97cbb | 4500 | } |
71dfc51f | 4501 | |
3f76745e JM |
4502 | ++abbrev_die_table_in_use; |
4503 | abbrev_die_table[abbrev_id] = die; | |
a3f97cbb | 4504 | } |
3f76745e JM |
4505 | |
4506 | die->die_abbrev = abbrev_id; | |
4507 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4508 | build_abbrev_table (c); | |
a3f97cbb | 4509 | } |
3f76745e | 4510 | \f |
243e7835 JW |
4511 | /* Return the size of a string, including the null byte. |
4512 | ||
4513 | This used to treat backslashes as escapes, and hence they were not included | |
4514 | in the count. However, that conflicts with what ASM_OUTPUT_ASCII does, | |
4515 | which treats a backslash as a backslash, escaping it if necessary, and hence | |
4516 | we must include them in the count. */ | |
a3f97cbb | 4517 | |
3f76745e JM |
4518 | static unsigned long |
4519 | size_of_string (str) | |
a96c67ec | 4520 | register const char *str; |
3f76745e | 4521 | { |
243e7835 | 4522 | return strlen (str) + 1; |
3f76745e JM |
4523 | } |
4524 | ||
4525 | /* Return the size of a location descriptor. */ | |
4526 | ||
4527 | static unsigned long | |
4528 | size_of_loc_descr (loc) | |
a3f97cbb JW |
4529 | register dw_loc_descr_ref loc; |
4530 | { | |
3f76745e | 4531 | register unsigned long size = 1; |
71dfc51f | 4532 | |
a3f97cbb JW |
4533 | switch (loc->dw_loc_opc) |
4534 | { | |
4535 | case DW_OP_addr: | |
3f76745e | 4536 | size += PTR_SIZE; |
a3f97cbb JW |
4537 | break; |
4538 | case DW_OP_const1u: | |
4539 | case DW_OP_const1s: | |
3f76745e | 4540 | size += 1; |
a3f97cbb JW |
4541 | break; |
4542 | case DW_OP_const2u: | |
4543 | case DW_OP_const2s: | |
3f76745e | 4544 | size += 2; |
a3f97cbb JW |
4545 | break; |
4546 | case DW_OP_const4u: | |
4547 | case DW_OP_const4s: | |
3f76745e | 4548 | size += 4; |
a3f97cbb JW |
4549 | break; |
4550 | case DW_OP_const8u: | |
4551 | case DW_OP_const8s: | |
3f76745e | 4552 | size += 8; |
a3f97cbb JW |
4553 | break; |
4554 | case DW_OP_constu: | |
3f76745e | 4555 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4556 | break; |
4557 | case DW_OP_consts: | |
3f76745e | 4558 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4559 | break; |
4560 | case DW_OP_pick: | |
3f76745e | 4561 | size += 1; |
a3f97cbb JW |
4562 | break; |
4563 | case DW_OP_plus_uconst: | |
3f76745e | 4564 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4565 | break; |
4566 | case DW_OP_skip: | |
4567 | case DW_OP_bra: | |
3f76745e | 4568 | size += 2; |
a3f97cbb JW |
4569 | break; |
4570 | case DW_OP_breg0: | |
4571 | case DW_OP_breg1: | |
4572 | case DW_OP_breg2: | |
4573 | case DW_OP_breg3: | |
4574 | case DW_OP_breg4: | |
4575 | case DW_OP_breg5: | |
4576 | case DW_OP_breg6: | |
4577 | case DW_OP_breg7: | |
4578 | case DW_OP_breg8: | |
4579 | case DW_OP_breg9: | |
4580 | case DW_OP_breg10: | |
4581 | case DW_OP_breg11: | |
4582 | case DW_OP_breg12: | |
4583 | case DW_OP_breg13: | |
4584 | case DW_OP_breg14: | |
4585 | case DW_OP_breg15: | |
4586 | case DW_OP_breg16: | |
4587 | case DW_OP_breg17: | |
4588 | case DW_OP_breg18: | |
4589 | case DW_OP_breg19: | |
4590 | case DW_OP_breg20: | |
4591 | case DW_OP_breg21: | |
4592 | case DW_OP_breg22: | |
4593 | case DW_OP_breg23: | |
4594 | case DW_OP_breg24: | |
4595 | case DW_OP_breg25: | |
4596 | case DW_OP_breg26: | |
4597 | case DW_OP_breg27: | |
4598 | case DW_OP_breg28: | |
4599 | case DW_OP_breg29: | |
4600 | case DW_OP_breg30: | |
4601 | case DW_OP_breg31: | |
3f76745e | 4602 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4603 | break; |
4604 | case DW_OP_regx: | |
3f76745e | 4605 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4606 | break; |
4607 | case DW_OP_fbreg: | |
3f76745e | 4608 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4609 | break; |
4610 | case DW_OP_bregx: | |
3f76745e JM |
4611 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
4612 | size += size_of_sleb128 (loc->dw_loc_oprnd2.v.val_int); | |
a3f97cbb JW |
4613 | break; |
4614 | case DW_OP_piece: | |
3f76745e | 4615 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4616 | break; |
4617 | case DW_OP_deref_size: | |
4618 | case DW_OP_xderef_size: | |
3f76745e | 4619 | size += 1; |
a3f97cbb JW |
4620 | break; |
4621 | default: | |
4622 | break; | |
4623 | } | |
3f76745e JM |
4624 | |
4625 | return size; | |
a3f97cbb JW |
4626 | } |
4627 | ||
3f76745e | 4628 | /* Return the size of a series of location descriptors. */ |
71dfc51f | 4629 | |
a3f97cbb | 4630 | static unsigned long |
3f76745e JM |
4631 | size_of_locs (loc) |
4632 | register dw_loc_descr_ref loc; | |
a3f97cbb | 4633 | { |
3f76745e | 4634 | register unsigned long size = 0; |
71dfc51f | 4635 | |
3f76745e JM |
4636 | for (; loc != NULL; loc = loc->dw_loc_next) |
4637 | size += size_of_loc_descr (loc); | |
4638 | ||
4639 | return size; | |
4640 | } | |
4641 | ||
4642 | /* Return the power-of-two number of bytes necessary to represent VALUE. */ | |
4643 | ||
4644 | static int | |
4645 | constant_size (value) | |
4646 | long unsigned value; | |
4647 | { | |
4648 | int log; | |
4649 | ||
4650 | if (value == 0) | |
4651 | log = 0; | |
a3f97cbb | 4652 | else |
3f76745e | 4653 | log = floor_log2 (value); |
71dfc51f | 4654 | |
3f76745e JM |
4655 | log = log / 8; |
4656 | log = 1 << (floor_log2 (log) + 1); | |
4657 | ||
4658 | return log; | |
a3f97cbb JW |
4659 | } |
4660 | ||
3f76745e JM |
4661 | /* Return the size of a DIE, as it is represented in the |
4662 | .debug_info section. */ | |
71dfc51f | 4663 | |
3f76745e JM |
4664 | static unsigned long |
4665 | size_of_die (die) | |
a3f97cbb JW |
4666 | register dw_die_ref die; |
4667 | { | |
3f76745e | 4668 | register unsigned long size = 0; |
a3f97cbb | 4669 | register dw_attr_ref a; |
71dfc51f | 4670 | |
3f76745e | 4671 | size += size_of_uleb128 (die->die_abbrev); |
a3f97cbb JW |
4672 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
4673 | { | |
a96c67ec | 4674 | switch (AT_class (a)) |
a3f97cbb JW |
4675 | { |
4676 | case dw_val_class_addr: | |
3f76745e | 4677 | size += PTR_SIZE; |
a3f97cbb JW |
4678 | break; |
4679 | case dw_val_class_loc: | |
3f76745e | 4680 | { |
a96c67ec | 4681 | register unsigned long lsize = size_of_locs (AT_loc (a)); |
71dfc51f | 4682 | |
3f76745e JM |
4683 | /* Block length. */ |
4684 | size += constant_size (lsize); | |
4685 | size += lsize; | |
4686 | } | |
a3f97cbb JW |
4687 | break; |
4688 | case dw_val_class_const: | |
3f76745e | 4689 | size += 4; |
a3f97cbb JW |
4690 | break; |
4691 | case dw_val_class_unsigned_const: | |
a96c67ec | 4692 | size += constant_size (AT_unsigned (a)); |
a3f97cbb | 4693 | break; |
469ac993 | 4694 | case dw_val_class_long_long: |
3f76745e | 4695 | size += 1 + 8; /* block */ |
469ac993 JM |
4696 | break; |
4697 | case dw_val_class_float: | |
3f76745e | 4698 | size += 1 + a->dw_attr_val.v.val_float.length * 4; /* block */ |
a3f97cbb JW |
4699 | break; |
4700 | case dw_val_class_flag: | |
3f76745e | 4701 | size += 1; |
a3f97cbb JW |
4702 | break; |
4703 | case dw_val_class_die_ref: | |
3f76745e | 4704 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
4705 | break; |
4706 | case dw_val_class_fde_ref: | |
3f76745e | 4707 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
4708 | break; |
4709 | case dw_val_class_lbl_id: | |
3f76745e JM |
4710 | size += PTR_SIZE; |
4711 | break; | |
8b790721 | 4712 | case dw_val_class_lbl_offset: |
3f76745e JM |
4713 | size += DWARF_OFFSET_SIZE; |
4714 | break; | |
4715 | case dw_val_class_str: | |
a96c67ec | 4716 | size += size_of_string (AT_string (a)); |
3f76745e JM |
4717 | break; |
4718 | default: | |
4719 | abort (); | |
4720 | } | |
a3f97cbb | 4721 | } |
3f76745e JM |
4722 | |
4723 | return size; | |
a3f97cbb JW |
4724 | } |
4725 | ||
956d6950 | 4726 | /* Size the debugging information associated with a given DIE. |
3f76745e JM |
4727 | Visits the DIE's children recursively. Updates the global |
4728 | variable next_die_offset, on each time through. Uses the | |
956d6950 | 4729 | current value of next_die_offset to update the die_offset |
3f76745e | 4730 | field in each DIE. */ |
71dfc51f | 4731 | |
a3f97cbb | 4732 | static void |
3f76745e JM |
4733 | calc_die_sizes (die) |
4734 | dw_die_ref die; | |
a3f97cbb | 4735 | { |
3f76745e JM |
4736 | register dw_die_ref c; |
4737 | die->die_offset = next_die_offset; | |
4738 | next_die_offset += size_of_die (die); | |
71dfc51f | 4739 | |
3f76745e JM |
4740 | for (c = die->die_child; c != NULL; c = c->die_sib) |
4741 | calc_die_sizes (c); | |
71dfc51f | 4742 | |
3f76745e JM |
4743 | if (die->die_child != NULL) |
4744 | /* Count the null byte used to terminate sibling lists. */ | |
4745 | next_die_offset += 1; | |
a3f97cbb JW |
4746 | } |
4747 | ||
3f76745e JM |
4748 | /* Return the size of the line information prolog generated for the |
4749 | compilation unit. */ | |
469ac993 | 4750 | |
3f76745e JM |
4751 | static unsigned long |
4752 | size_of_line_prolog () | |
a94dbf2c | 4753 | { |
3f76745e JM |
4754 | register unsigned long size; |
4755 | register unsigned long ft_index; | |
a94dbf2c | 4756 | |
3f76745e | 4757 | size = DWARF_LINE_PROLOG_HEADER_SIZE; |
469ac993 | 4758 | |
3f76745e JM |
4759 | /* Count the size of the table giving number of args for each |
4760 | standard opcode. */ | |
4761 | size += DWARF_LINE_OPCODE_BASE - 1; | |
71dfc51f | 4762 | |
3f76745e | 4763 | /* Include directory table is empty (at present). Count only the |
38e01259 | 4764 | null byte used to terminate the table. */ |
3f76745e | 4765 | size += 1; |
71dfc51f | 4766 | |
3f76745e JM |
4767 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
4768 | { | |
4769 | /* File name entry. */ | |
4770 | size += size_of_string (file_table[ft_index]); | |
a94dbf2c | 4771 | |
3f76745e JM |
4772 | /* Include directory index. */ |
4773 | size += size_of_uleb128 (0); | |
a94dbf2c | 4774 | |
3f76745e JM |
4775 | /* Modification time. */ |
4776 | size += size_of_uleb128 (0); | |
71dfc51f | 4777 | |
3f76745e JM |
4778 | /* File length in bytes. */ |
4779 | size += size_of_uleb128 (0); | |
a94dbf2c | 4780 | } |
71dfc51f | 4781 | |
3f76745e JM |
4782 | /* Count the file table terminator. */ |
4783 | size += 1; | |
4784 | return size; | |
a94dbf2c JM |
4785 | } |
4786 | ||
3f76745e JM |
4787 | /* Return the size of the .debug_pubnames table generated for the |
4788 | compilation unit. */ | |
a94dbf2c | 4789 | |
3f76745e JM |
4790 | static unsigned long |
4791 | size_of_pubnames () | |
a94dbf2c | 4792 | { |
3f76745e JM |
4793 | register unsigned long size; |
4794 | register unsigned i; | |
469ac993 | 4795 | |
3f76745e JM |
4796 | size = DWARF_PUBNAMES_HEADER_SIZE; |
4797 | for (i = 0; i < pubname_table_in_use; ++i) | |
a94dbf2c | 4798 | { |
3f76745e JM |
4799 | register pubname_ref p = &pubname_table[i]; |
4800 | size += DWARF_OFFSET_SIZE + size_of_string (p->name); | |
a94dbf2c JM |
4801 | } |
4802 | ||
3f76745e JM |
4803 | size += DWARF_OFFSET_SIZE; |
4804 | return size; | |
a94dbf2c JM |
4805 | } |
4806 | ||
956d6950 | 4807 | /* Return the size of the information in the .debug_aranges section. */ |
469ac993 | 4808 | |
3f76745e JM |
4809 | static unsigned long |
4810 | size_of_aranges () | |
469ac993 | 4811 | { |
3f76745e | 4812 | register unsigned long size; |
469ac993 | 4813 | |
3f76745e | 4814 | size = DWARF_ARANGES_HEADER_SIZE; |
469ac993 | 4815 | |
3f76745e JM |
4816 | /* Count the address/length pair for this compilation unit. */ |
4817 | size += 2 * PTR_SIZE; | |
4818 | size += 2 * PTR_SIZE * arange_table_in_use; | |
469ac993 | 4819 | |
3f76745e JM |
4820 | /* Count the two zero words used to terminated the address range table. */ |
4821 | size += 2 * PTR_SIZE; | |
4822 | return size; | |
4823 | } | |
4824 | \f | |
4825 | /* Select the encoding of an attribute value. */ | |
4826 | ||
4827 | static enum dwarf_form | |
a96c67ec JM |
4828 | value_format (a) |
4829 | dw_attr_ref a; | |
3f76745e | 4830 | { |
a96c67ec | 4831 | switch (a->dw_attr_val.val_class) |
469ac993 | 4832 | { |
3f76745e JM |
4833 | case dw_val_class_addr: |
4834 | return DW_FORM_addr; | |
4835 | case dw_val_class_loc: | |
a96c67ec | 4836 | switch (constant_size (size_of_locs (AT_loc (a)))) |
469ac993 | 4837 | { |
3f76745e JM |
4838 | case 1: |
4839 | return DW_FORM_block1; | |
4840 | case 2: | |
4841 | return DW_FORM_block2; | |
469ac993 JM |
4842 | default: |
4843 | abort (); | |
4844 | } | |
3f76745e JM |
4845 | case dw_val_class_const: |
4846 | return DW_FORM_data4; | |
4847 | case dw_val_class_unsigned_const: | |
a96c67ec | 4848 | switch (constant_size (AT_unsigned (a))) |
3f76745e JM |
4849 | { |
4850 | case 1: | |
4851 | return DW_FORM_data1; | |
4852 | case 2: | |
4853 | return DW_FORM_data2; | |
4854 | case 4: | |
4855 | return DW_FORM_data4; | |
4856 | case 8: | |
4857 | return DW_FORM_data8; | |
4858 | default: | |
4859 | abort (); | |
4860 | } | |
4861 | case dw_val_class_long_long: | |
4862 | return DW_FORM_block1; | |
4863 | case dw_val_class_float: | |
4864 | return DW_FORM_block1; | |
4865 | case dw_val_class_flag: | |
4866 | return DW_FORM_flag; | |
4867 | case dw_val_class_die_ref: | |
4868 | return DW_FORM_ref; | |
4869 | case dw_val_class_fde_ref: | |
4870 | return DW_FORM_data; | |
4871 | case dw_val_class_lbl_id: | |
4872 | return DW_FORM_addr; | |
8b790721 | 4873 | case dw_val_class_lbl_offset: |
3f76745e JM |
4874 | return DW_FORM_data; |
4875 | case dw_val_class_str: | |
4876 | return DW_FORM_string; | |
469ac993 JM |
4877 | default: |
4878 | abort (); | |
4879 | } | |
a94dbf2c JM |
4880 | } |
4881 | ||
3f76745e | 4882 | /* Output the encoding of an attribute value. */ |
469ac993 | 4883 | |
3f76745e | 4884 | static void |
a96c67ec JM |
4885 | output_value_format (a) |
4886 | dw_attr_ref a; | |
a94dbf2c | 4887 | { |
a96c67ec | 4888 | enum dwarf_form form = value_format (a); |
71dfc51f | 4889 | |
3f76745e | 4890 | output_uleb128 (form); |
c5cec899 | 4891 | if (flag_debug_asm) |
3f76745e | 4892 | fprintf (asm_out_file, " (%s)", dwarf_form_name (form)); |
141719a8 | 4893 | |
3f76745e JM |
4894 | fputc ('\n', asm_out_file); |
4895 | } | |
469ac993 | 4896 | |
3f76745e JM |
4897 | /* Output the .debug_abbrev section which defines the DIE abbreviation |
4898 | table. */ | |
469ac993 | 4899 | |
3f76745e JM |
4900 | static void |
4901 | output_abbrev_section () | |
4902 | { | |
4903 | unsigned long abbrev_id; | |
71dfc51f | 4904 | |
3f76745e JM |
4905 | dw_attr_ref a_attr; |
4906 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) | |
4907 | { | |
4908 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 4909 | |
3f76745e | 4910 | output_uleb128 (abbrev_id); |
c5cec899 | 4911 | if (flag_debug_asm) |
3f76745e | 4912 | fprintf (asm_out_file, " (abbrev code)"); |
469ac993 | 4913 | |
3f76745e JM |
4914 | fputc ('\n', asm_out_file); |
4915 | output_uleb128 (abbrev->die_tag); | |
c5cec899 | 4916 | if (flag_debug_asm) |
3f76745e JM |
4917 | fprintf (asm_out_file, " (TAG: %s)", |
4918 | dwarf_tag_name (abbrev->die_tag)); | |
71dfc51f | 4919 | |
3f76745e JM |
4920 | fputc ('\n', asm_out_file); |
4921 | fprintf (asm_out_file, "\t%s\t0x%x", ASM_BYTE_OP, | |
4922 | abbrev->die_child != NULL ? DW_children_yes : DW_children_no); | |
469ac993 | 4923 | |
c5cec899 | 4924 | if (flag_debug_asm) |
3f76745e JM |
4925 | fprintf (asm_out_file, "\t%s %s", |
4926 | ASM_COMMENT_START, | |
4927 | (abbrev->die_child != NULL | |
4928 | ? "DW_children_yes" : "DW_children_no")); | |
4929 | ||
4930 | fputc ('\n', asm_out_file); | |
4931 | ||
4932 | for (a_attr = abbrev->die_attr; a_attr != NULL; | |
4933 | a_attr = a_attr->dw_attr_next) | |
4934 | { | |
4935 | output_uleb128 (a_attr->dw_attr); | |
c5cec899 | 4936 | if (flag_debug_asm) |
3f76745e JM |
4937 | fprintf (asm_out_file, " (%s)", |
4938 | dwarf_attr_name (a_attr->dw_attr)); | |
4939 | ||
4940 | fputc ('\n', asm_out_file); | |
a96c67ec | 4941 | output_value_format (a_attr); |
469ac993 | 4942 | } |
469ac993 | 4943 | |
3f76745e | 4944 | fprintf (asm_out_file, "\t%s\t0,0\n", ASM_BYTE_OP); |
469ac993 | 4945 | } |
81f374eb HPN |
4946 | |
4947 | /* Terminate the table. */ | |
4948 | fprintf (asm_out_file, "\t%s\t0\n", ASM_BYTE_OP); | |
a94dbf2c JM |
4949 | } |
4950 | ||
3f76745e | 4951 | /* Output location description stack opcode's operands (if any). */ |
71dfc51f | 4952 | |
3f76745e JM |
4953 | static void |
4954 | output_loc_operands (loc) | |
4955 | register dw_loc_descr_ref loc; | |
a3f97cbb | 4956 | { |
3f76745e JM |
4957 | register dw_val_ref val1 = &loc->dw_loc_oprnd1; |
4958 | register dw_val_ref val2 = &loc->dw_loc_oprnd2; | |
71dfc51f | 4959 | |
3f76745e | 4960 | switch (loc->dw_loc_opc) |
a3f97cbb | 4961 | { |
3f76745e JM |
4962 | case DW_OP_addr: |
4963 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, val1->v.val_addr); | |
4964 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4965 | break; |
3f76745e JM |
4966 | case DW_OP_const1u: |
4967 | case DW_OP_const1s: | |
4968 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
4969 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4970 | break; |
3f76745e JM |
4971 | case DW_OP_const2u: |
4972 | case DW_OP_const2s: | |
4973 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
4974 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4975 | break; |
3f76745e JM |
4976 | case DW_OP_const4u: |
4977 | case DW_OP_const4s: | |
4978 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, val1->v.val_int); | |
4979 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4980 | break; |
3f76745e JM |
4981 | case DW_OP_const8u: |
4982 | case DW_OP_const8s: | |
4983 | abort (); | |
4984 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4985 | break; |
3f76745e JM |
4986 | case DW_OP_constu: |
4987 | output_uleb128 (val1->v.val_unsigned); | |
4988 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4989 | break; |
3f76745e JM |
4990 | case DW_OP_consts: |
4991 | output_sleb128 (val1->v.val_int); | |
4992 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4993 | break; |
3f76745e JM |
4994 | case DW_OP_pick: |
4995 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_int); | |
4996 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4997 | break; |
3f76745e JM |
4998 | case DW_OP_plus_uconst: |
4999 | output_uleb128 (val1->v.val_unsigned); | |
5000 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5001 | break; |
3f76745e JM |
5002 | case DW_OP_skip: |
5003 | case DW_OP_bra: | |
5004 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
5005 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5006 | break; |
3f76745e JM |
5007 | case DW_OP_breg0: |
5008 | case DW_OP_breg1: | |
5009 | case DW_OP_breg2: | |
5010 | case DW_OP_breg3: | |
5011 | case DW_OP_breg4: | |
5012 | case DW_OP_breg5: | |
5013 | case DW_OP_breg6: | |
5014 | case DW_OP_breg7: | |
5015 | case DW_OP_breg8: | |
5016 | case DW_OP_breg9: | |
5017 | case DW_OP_breg10: | |
5018 | case DW_OP_breg11: | |
5019 | case DW_OP_breg12: | |
5020 | case DW_OP_breg13: | |
5021 | case DW_OP_breg14: | |
5022 | case DW_OP_breg15: | |
5023 | case DW_OP_breg16: | |
5024 | case DW_OP_breg17: | |
5025 | case DW_OP_breg18: | |
5026 | case DW_OP_breg19: | |
5027 | case DW_OP_breg20: | |
5028 | case DW_OP_breg21: | |
5029 | case DW_OP_breg22: | |
5030 | case DW_OP_breg23: | |
5031 | case DW_OP_breg24: | |
5032 | case DW_OP_breg25: | |
5033 | case DW_OP_breg26: | |
5034 | case DW_OP_breg27: | |
5035 | case DW_OP_breg28: | |
5036 | case DW_OP_breg29: | |
5037 | case DW_OP_breg30: | |
5038 | case DW_OP_breg31: | |
5039 | output_sleb128 (val1->v.val_int); | |
5040 | fputc ('\n', asm_out_file); | |
5041 | break; | |
5042 | case DW_OP_regx: | |
5043 | output_uleb128 (val1->v.val_unsigned); | |
5044 | fputc ('\n', asm_out_file); | |
5045 | break; | |
5046 | case DW_OP_fbreg: | |
5047 | output_sleb128 (val1->v.val_int); | |
5048 | fputc ('\n', asm_out_file); | |
5049 | break; | |
5050 | case DW_OP_bregx: | |
5051 | output_uleb128 (val1->v.val_unsigned); | |
5052 | fputc ('\n', asm_out_file); | |
5053 | output_sleb128 (val2->v.val_int); | |
5054 | fputc ('\n', asm_out_file); | |
5055 | break; | |
5056 | case DW_OP_piece: | |
5057 | output_uleb128 (val1->v.val_unsigned); | |
5058 | fputc ('\n', asm_out_file); | |
5059 | break; | |
5060 | case DW_OP_deref_size: | |
5061 | case DW_OP_xderef_size: | |
5062 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
5063 | fputc ('\n', asm_out_file); | |
a3f97cbb JW |
5064 | break; |
5065 | default: | |
5066 | break; | |
5067 | } | |
a3f97cbb JW |
5068 | } |
5069 | ||
3f76745e JM |
5070 | /* Output the DIE and its attributes. Called recursively to generate |
5071 | the definitions of each child DIE. */ | |
71dfc51f | 5072 | |
a3f97cbb | 5073 | static void |
3f76745e JM |
5074 | output_die (die) |
5075 | register dw_die_ref die; | |
a3f97cbb | 5076 | { |
3f76745e JM |
5077 | register dw_attr_ref a; |
5078 | register dw_die_ref c; | |
3f76745e JM |
5079 | register unsigned long size; |
5080 | register dw_loc_descr_ref loc; | |
a94dbf2c | 5081 | |
3f76745e | 5082 | output_uleb128 (die->die_abbrev); |
c5cec899 | 5083 | if (flag_debug_asm) |
2d8b0f3a | 5084 | fprintf (asm_out_file, " (DIE (0x%lx) %s)", |
3f76745e | 5085 | die->die_offset, dwarf_tag_name (die->die_tag)); |
a94dbf2c | 5086 | |
3f76745e | 5087 | fputc ('\n', asm_out_file); |
a94dbf2c | 5088 | |
3f76745e | 5089 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
a3f97cbb | 5090 | { |
a96c67ec | 5091 | switch (AT_class (a)) |
3f76745e JM |
5092 | { |
5093 | case dw_val_class_addr: | |
a96c67ec | 5094 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, AT_addr (a)); |
3f76745e | 5095 | break; |
a3f97cbb | 5096 | |
3f76745e | 5097 | case dw_val_class_loc: |
a96c67ec | 5098 | size = size_of_locs (AT_loc (a)); |
71dfc51f | 5099 | |
3f76745e JM |
5100 | /* Output the block length for this list of location operations. */ |
5101 | switch (constant_size (size)) | |
5102 | { | |
5103 | case 1: | |
5104 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, size); | |
5105 | break; | |
5106 | case 2: | |
5107 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, size); | |
5108 | break; | |
5109 | default: | |
5110 | abort (); | |
5111 | } | |
71dfc51f | 5112 | |
c5cec899 | 5113 | if (flag_debug_asm) |
3f76745e JM |
5114 | fprintf (asm_out_file, "\t%s %s", |
5115 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
71dfc51f | 5116 | |
3f76745e | 5117 | fputc ('\n', asm_out_file); |
a96c67ec | 5118 | for (loc = AT_loc (a); loc != NULL; loc = loc->dw_loc_next) |
3f76745e JM |
5119 | { |
5120 | /* Output the opcode. */ | |
5121 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, loc->dw_loc_opc); | |
c5cec899 | 5122 | if (flag_debug_asm) |
3f76745e JM |
5123 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
5124 | dwarf_stack_op_name (loc->dw_loc_opc)); | |
71dfc51f | 5125 | |
3f76745e | 5126 | fputc ('\n', asm_out_file); |
71dfc51f | 5127 | |
3f76745e JM |
5128 | /* Output the operand(s) (if any). */ |
5129 | output_loc_operands (loc); | |
5130 | } | |
a3f97cbb | 5131 | break; |
3f76745e JM |
5132 | |
5133 | case dw_val_class_const: | |
a96c67ec | 5134 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, AT_int (a)); |
a3f97cbb | 5135 | break; |
3f76745e JM |
5136 | |
5137 | case dw_val_class_unsigned_const: | |
a96c67ec | 5138 | switch (constant_size (AT_unsigned (a))) |
3f76745e JM |
5139 | { |
5140 | case 1: | |
a96c67ec | 5141 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
5142 | break; |
5143 | case 2: | |
a96c67ec | 5144 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
5145 | break; |
5146 | case 4: | |
a96c67ec | 5147 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
5148 | break; |
5149 | case 8: | |
5150 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
5151 | a->dw_attr_val.v.val_long_long.hi, | |
5152 | a->dw_attr_val.v.val_long_long.low); | |
5153 | break; | |
5154 | default: | |
5155 | abort (); | |
5156 | } | |
a3f97cbb | 5157 | break; |
3f76745e JM |
5158 | |
5159 | case dw_val_class_long_long: | |
5160 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 8); | |
c5cec899 | 5161 | if (flag_debug_asm) |
3f76745e JM |
5162 | fprintf (asm_out_file, "\t%s %s", |
5163 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5164 | ||
5165 | fputc ('\n', asm_out_file); | |
5166 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
5167 | a->dw_attr_val.v.val_long_long.hi, | |
5168 | a->dw_attr_val.v.val_long_long.low); | |
5169 | ||
c5cec899 | 5170 | if (flag_debug_asm) |
3f76745e JM |
5171 | fprintf (asm_out_file, |
5172 | "\t%s long long constant", ASM_COMMENT_START); | |
5173 | ||
5174 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5175 | break; |
3f76745e JM |
5176 | |
5177 | case dw_val_class_float: | |
c84e2712 KG |
5178 | { |
5179 | register unsigned int i; | |
5180 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5181 | a->dw_attr_val.v.val_float.length * 4); | |
5182 | if (flag_debug_asm) | |
5183 | fprintf (asm_out_file, "\t%s %s", | |
5184 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5185 | ||
5186 | fputc ('\n', asm_out_file); | |
5187 | for (i = 0; i < a->dw_attr_val.v.val_float.length; ++i) | |
5188 | { | |
5189 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, | |
5190 | a->dw_attr_val.v.val_float.array[i]); | |
5191 | if (flag_debug_asm) | |
5192 | fprintf (asm_out_file, "\t%s fp constant word %u", | |
5193 | ASM_COMMENT_START, i); | |
5194 | ||
5195 | fputc ('\n', asm_out_file); | |
5196 | } | |
a3f97cbb | 5197 | break; |
c84e2712 | 5198 | } |
3f76745e JM |
5199 | |
5200 | case dw_val_class_flag: | |
a96c67ec | 5201 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, AT_flag (a)); |
a3f97cbb | 5202 | break; |
3f76745e JM |
5203 | |
5204 | case dw_val_class_die_ref: | |
a96c67ec | 5205 | ASM_OUTPUT_DWARF_DATA (asm_out_file, AT_ref (a)->die_offset); |
a3f97cbb | 5206 | break; |
3f76745e JM |
5207 | |
5208 | case dw_val_class_fde_ref: | |
a6ab3aad JM |
5209 | { |
5210 | char l1[20]; | |
5211 | ASM_GENERATE_INTERNAL_LABEL | |
5212 | (l1, FDE_AFTER_SIZE_LABEL, a->dw_attr_val.v.val_fde_index * 2); | |
5213 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, l1); | |
5214 | fprintf (asm_out_file, " - %d", DWARF_OFFSET_SIZE); | |
5215 | } | |
a3f97cbb | 5216 | break; |
a3f97cbb | 5217 | |
3f76745e | 5218 | case dw_val_class_lbl_id: |
a96c67ec | 5219 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, AT_lbl (a)); |
3f76745e | 5220 | break; |
71dfc51f | 5221 | |
8b790721 | 5222 | case dw_val_class_lbl_offset: |
a96c67ec | 5223 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, AT_lbl (a)); |
3f76745e | 5224 | break; |
a3f97cbb | 5225 | |
3f76745e | 5226 | case dw_val_class_str: |
8d4e65a6 | 5227 | if (flag_debug_asm) |
a96c67ec | 5228 | ASM_OUTPUT_DWARF_STRING (asm_out_file, AT_string (a)); |
8d4e65a6 | 5229 | else |
a96c67ec JM |
5230 | ASM_OUTPUT_ASCII (asm_out_file, AT_string (a), |
5231 | (int) strlen (AT_string (a)) + 1); | |
3f76745e | 5232 | break; |
b2932ae5 | 5233 | |
3f76745e JM |
5234 | default: |
5235 | abort (); | |
5236 | } | |
a94dbf2c | 5237 | |
a96c67ec JM |
5238 | if (AT_class (a) != dw_val_class_loc |
5239 | && AT_class (a) != dw_val_class_long_long | |
5240 | && AT_class (a) != dw_val_class_float) | |
3f76745e | 5241 | { |
c5cec899 | 5242 | if (flag_debug_asm) |
3f76745e JM |
5243 | fprintf (asm_out_file, "\t%s %s", |
5244 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
b2932ae5 | 5245 | |
3f76745e JM |
5246 | fputc ('\n', asm_out_file); |
5247 | } | |
5248 | } | |
71dfc51f | 5249 | |
3f76745e JM |
5250 | for (c = die->die_child; c != NULL; c = c->die_sib) |
5251 | output_die (c); | |
71dfc51f | 5252 | |
3f76745e | 5253 | if (die->die_child != NULL) |
7e23cb16 | 5254 | { |
3f76745e JM |
5255 | /* Add null byte to terminate sibling list. */ |
5256 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5257 | if (flag_debug_asm) |
2d8b0f3a | 5258 | fprintf (asm_out_file, "\t%s end of children of DIE 0x%lx", |
3f76745e JM |
5259 | ASM_COMMENT_START, die->die_offset); |
5260 | ||
7e23cb16 JM |
5261 | fputc ('\n', asm_out_file); |
5262 | } | |
3f76745e | 5263 | } |
71dfc51f | 5264 | |
3f76745e JM |
5265 | /* Output the compilation unit that appears at the beginning of the |
5266 | .debug_info section, and precedes the DIE descriptions. */ | |
71dfc51f | 5267 | |
3f76745e JM |
5268 | static void |
5269 | output_compilation_unit_header () | |
5270 | { | |
5271 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset - DWARF_OFFSET_SIZE); | |
c5cec899 | 5272 | if (flag_debug_asm) |
3f76745e JM |
5273 | fprintf (asm_out_file, "\t%s Length of Compilation Unit Info.", |
5274 | ASM_COMMENT_START); | |
71dfc51f | 5275 | |
a3f97cbb | 5276 | fputc ('\n', asm_out_file); |
3f76745e | 5277 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
c5cec899 | 5278 | if (flag_debug_asm) |
3f76745e | 5279 | fprintf (asm_out_file, "\t%s DWARF version number", ASM_COMMENT_START); |
71dfc51f | 5280 | |
a3f97cbb | 5281 | fputc ('\n', asm_out_file); |
8b790721 | 5282 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, abbrev_section_label); |
c5cec899 | 5283 | if (flag_debug_asm) |
3f76745e JM |
5284 | fprintf (asm_out_file, "\t%s Offset Into Abbrev. Section", |
5285 | ASM_COMMENT_START); | |
71dfc51f | 5286 | |
a3f97cbb | 5287 | fputc ('\n', asm_out_file); |
3f76745e | 5288 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); |
c5cec899 | 5289 | if (flag_debug_asm) |
3f76745e | 5290 | fprintf (asm_out_file, "\t%s Pointer Size (in bytes)", ASM_COMMENT_START); |
71dfc51f | 5291 | |
a3f97cbb | 5292 | fputc ('\n', asm_out_file); |
a3f97cbb JW |
5293 | } |
5294 | ||
a1d7ffe3 JM |
5295 | /* The DWARF2 pubname for a nested thingy looks like "A::f". The output |
5296 | of decl_printable_name for C++ looks like "A::f(int)". Let's drop the | |
5297 | argument list, and maybe the scope. */ | |
5298 | ||
d560ee52 | 5299 | static const char * |
a1d7ffe3 JM |
5300 | dwarf2_name (decl, scope) |
5301 | tree decl; | |
5302 | int scope; | |
5303 | { | |
5304 | return (*decl_printable_name) (decl, scope ? 1 : 0); | |
5305 | } | |
5306 | ||
d291dd49 | 5307 | /* Add a new entry to .debug_pubnames if appropriate. */ |
71dfc51f | 5308 | |
d291dd49 JM |
5309 | static void |
5310 | add_pubname (decl, die) | |
5311 | tree decl; | |
5312 | dw_die_ref die; | |
5313 | { | |
5314 | pubname_ref p; | |
5315 | ||
5316 | if (! TREE_PUBLIC (decl)) | |
5317 | return; | |
5318 | ||
5319 | if (pubname_table_in_use == pubname_table_allocated) | |
5320 | { | |
5321 | pubname_table_allocated += PUBNAME_TABLE_INCREMENT; | |
5322 | pubname_table = (pubname_ref) xrealloc | |
5323 | (pubname_table, pubname_table_allocated * sizeof (pubname_entry)); | |
5324 | } | |
71dfc51f | 5325 | |
d291dd49 JM |
5326 | p = &pubname_table[pubname_table_in_use++]; |
5327 | p->die = die; | |
a1d7ffe3 JM |
5328 | |
5329 | p->name = xstrdup (dwarf2_name (decl, 1)); | |
d291dd49 JM |
5330 | } |
5331 | ||
a3f97cbb JW |
5332 | /* Output the public names table used to speed up access to externally |
5333 | visible names. For now, only generate entries for externally | |
5334 | visible procedures. */ | |
71dfc51f | 5335 | |
a3f97cbb JW |
5336 | static void |
5337 | output_pubnames () | |
5338 | { | |
d291dd49 | 5339 | register unsigned i; |
71dfc51f RK |
5340 | register unsigned long pubnames_length = size_of_pubnames (); |
5341 | ||
5342 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pubnames_length); | |
5343 | ||
c5cec899 | 5344 | if (flag_debug_asm) |
71dfc51f RK |
5345 | fprintf (asm_out_file, "\t%s Length of Public Names Info.", |
5346 | ASM_COMMENT_START); | |
5347 | ||
a3f97cbb JW |
5348 | fputc ('\n', asm_out_file); |
5349 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
71dfc51f | 5350 | |
c5cec899 | 5351 | if (flag_debug_asm) |
71dfc51f RK |
5352 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5353 | ||
a3f97cbb | 5354 | fputc ('\n', asm_out_file); |
8b790721 | 5355 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, debug_info_section_label); |
c5cec899 | 5356 | if (flag_debug_asm) |
71dfc51f RK |
5357 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
5358 | ASM_COMMENT_START); | |
5359 | ||
a3f97cbb | 5360 | fputc ('\n', asm_out_file); |
7e23cb16 | 5361 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset); |
c5cec899 | 5362 | if (flag_debug_asm) |
71dfc51f RK |
5363 | fprintf (asm_out_file, "\t%s Compilation Unit Length", ASM_COMMENT_START); |
5364 | ||
a3f97cbb | 5365 | fputc ('\n', asm_out_file); |
d291dd49 | 5366 | for (i = 0; i < pubname_table_in_use; ++i) |
a3f97cbb | 5367 | { |
d291dd49 | 5368 | register pubname_ref pub = &pubname_table[i]; |
71dfc51f | 5369 | |
7e23cb16 | 5370 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pub->die->die_offset); |
c5cec899 | 5371 | if (flag_debug_asm) |
71dfc51f RK |
5372 | fprintf (asm_out_file, "\t%s DIE offset", ASM_COMMENT_START); |
5373 | ||
d291dd49 JM |
5374 | fputc ('\n', asm_out_file); |
5375 | ||
c5cec899 | 5376 | if (flag_debug_asm) |
8d4e65a6 JL |
5377 | { |
5378 | ASM_OUTPUT_DWARF_STRING (asm_out_file, pub->name); | |
5379 | fprintf (asm_out_file, "%s external name", ASM_COMMENT_START); | |
5380 | } | |
5381 | else | |
5382 | { | |
c84e2712 KG |
5383 | ASM_OUTPUT_ASCII (asm_out_file, pub->name, |
5384 | (int) strlen (pub->name) + 1); | |
8d4e65a6 | 5385 | } |
71dfc51f | 5386 | |
d291dd49 | 5387 | fputc ('\n', asm_out_file); |
a3f97cbb | 5388 | } |
71dfc51f | 5389 | |
7e23cb16 | 5390 | ASM_OUTPUT_DWARF_DATA (asm_out_file, 0); |
a3f97cbb JW |
5391 | fputc ('\n', asm_out_file); |
5392 | } | |
5393 | ||
d291dd49 | 5394 | /* Add a new entry to .debug_aranges if appropriate. */ |
71dfc51f | 5395 | |
d291dd49 JM |
5396 | static void |
5397 | add_arange (decl, die) | |
5398 | tree decl; | |
5399 | dw_die_ref die; | |
5400 | { | |
5401 | if (! DECL_SECTION_NAME (decl)) | |
5402 | return; | |
5403 | ||
5404 | if (arange_table_in_use == arange_table_allocated) | |
5405 | { | |
5406 | arange_table_allocated += ARANGE_TABLE_INCREMENT; | |
71dfc51f RK |
5407 | arange_table |
5408 | = (arange_ref) xrealloc (arange_table, | |
5409 | arange_table_allocated * sizeof (dw_die_ref)); | |
d291dd49 | 5410 | } |
71dfc51f | 5411 | |
d291dd49 JM |
5412 | arange_table[arange_table_in_use++] = die; |
5413 | } | |
5414 | ||
a3f97cbb JW |
5415 | /* Output the information that goes into the .debug_aranges table. |
5416 | Namely, define the beginning and ending address range of the | |
5417 | text section generated for this compilation unit. */ | |
71dfc51f | 5418 | |
a3f97cbb JW |
5419 | static void |
5420 | output_aranges () | |
5421 | { | |
d291dd49 | 5422 | register unsigned i; |
71dfc51f RK |
5423 | register unsigned long aranges_length = size_of_aranges (); |
5424 | ||
5425 | ASM_OUTPUT_DWARF_DATA (asm_out_file, aranges_length); | |
c5cec899 | 5426 | if (flag_debug_asm) |
71dfc51f RK |
5427 | fprintf (asm_out_file, "\t%s Length of Address Ranges Info.", |
5428 | ASM_COMMENT_START); | |
5429 | ||
a3f97cbb JW |
5430 | fputc ('\n', asm_out_file); |
5431 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
c5cec899 | 5432 | if (flag_debug_asm) |
71dfc51f RK |
5433 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5434 | ||
a3f97cbb | 5435 | fputc ('\n', asm_out_file); |
8b790721 | 5436 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, debug_info_section_label); |
c5cec899 | 5437 | if (flag_debug_asm) |
71dfc51f RK |
5438 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
5439 | ASM_COMMENT_START); | |
5440 | ||
a3f97cbb JW |
5441 | fputc ('\n', asm_out_file); |
5442 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); | |
c5cec899 | 5443 | if (flag_debug_asm) |
71dfc51f RK |
5444 | fprintf (asm_out_file, "\t%s Size of Address", ASM_COMMENT_START); |
5445 | ||
a3f97cbb JW |
5446 | fputc ('\n', asm_out_file); |
5447 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5448 | if (flag_debug_asm) |
71dfc51f RK |
5449 | fprintf (asm_out_file, "\t%s Size of Segment Descriptor", |
5450 | ASM_COMMENT_START); | |
5451 | ||
a3f97cbb | 5452 | fputc ('\n', asm_out_file); |
b122caab JW |
5453 | /* We need to align to twice the pointer size here. |
5454 | If DWARF_OFFSET_SIZE == 4, then we have emitted 12 bytes, and need 4 | |
5455 | bytes of padding to align for either 4 or 8 byte pointers. */ | |
5456 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); | |
5457 | /* If DWARF_OFFSET_SIZE == 8, then we have emitted 20 bytes, and need 12 | |
5458 | bytes of padding to align for 8 byte pointers. We have already emitted | |
5459 | 4 bytes of padding, so emit 8 more here. */ | |
5460 | if (DWARF_OFFSET_SIZE == 8) | |
7e23cb16 | 5461 | fprintf (asm_out_file, ",0,0"); |
71dfc51f | 5462 | |
c5cec899 | 5463 | if (flag_debug_asm) |
71dfc51f RK |
5464 | fprintf (asm_out_file, "\t%s Pad to %d byte boundary", |
5465 | ASM_COMMENT_START, 2 * PTR_SIZE); | |
5466 | ||
a3f97cbb | 5467 | fputc ('\n', asm_out_file); |
8b790721 | 5468 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_section_label); |
c5cec899 | 5469 | if (flag_debug_asm) |
71dfc51f RK |
5470 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
5471 | ||
a3f97cbb | 5472 | fputc ('\n', asm_out_file); |
71208e03 | 5473 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, text_end_label, |
8b790721 | 5474 | text_section_label); |
c5cec899 | 5475 | if (flag_debug_asm) |
71dfc51f RK |
5476 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
5477 | ||
a3f97cbb | 5478 | fputc ('\n', asm_out_file); |
d291dd49 JM |
5479 | for (i = 0; i < arange_table_in_use; ++i) |
5480 | { | |
e689ae67 | 5481 | dw_die_ref die = arange_table[i]; |
71dfc51f | 5482 | |
e689ae67 JM |
5483 | if (die->die_tag == DW_TAG_subprogram) |
5484 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, get_AT_low_pc (die)); | |
d291dd49 | 5485 | else |
a1d7ffe3 | 5486 | { |
e689ae67 JM |
5487 | /* A static variable; extract the symbol from DW_AT_location. |
5488 | Note that this code isn't currently hit, as we only emit | |
5489 | aranges for functions (jason 9/23/99). */ | |
71dfc51f | 5490 | |
e689ae67 JM |
5491 | dw_attr_ref a = get_AT (die, DW_AT_location); |
5492 | dw_loc_descr_ref loc; | |
a96c67ec | 5493 | if (! a || AT_class (a) != dw_val_class_loc) |
e689ae67 JM |
5494 | abort (); |
5495 | ||
a96c67ec | 5496 | loc = AT_loc (a); |
e689ae67 JM |
5497 | if (loc->dw_loc_opc != DW_OP_addr) |
5498 | abort (); | |
5499 | ||
5500 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, loc->dw_loc_oprnd1.v.val_addr); | |
a1d7ffe3 | 5501 | } |
71dfc51f | 5502 | |
c5cec899 | 5503 | if (flag_debug_asm) |
71dfc51f RK |
5504 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
5505 | ||
d291dd49 | 5506 | fputc ('\n', asm_out_file); |
e689ae67 JM |
5507 | if (die->die_tag == DW_TAG_subprogram) |
5508 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, get_AT_hi_pc (die), | |
5509 | get_AT_low_pc (die)); | |
d291dd49 | 5510 | else |
7e23cb16 | 5511 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, |
e689ae67 | 5512 | get_AT_unsigned (die, DW_AT_byte_size)); |
71dfc51f | 5513 | |
c5cec899 | 5514 | if (flag_debug_asm) |
71dfc51f RK |
5515 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
5516 | ||
d291dd49 JM |
5517 | fputc ('\n', asm_out_file); |
5518 | } | |
71dfc51f | 5519 | |
a3f97cbb | 5520 | /* Output the terminator words. */ |
7e23cb16 | 5521 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb | 5522 | fputc ('\n', asm_out_file); |
7e23cb16 | 5523 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb JW |
5524 | fputc ('\n', asm_out_file); |
5525 | } | |
5526 | ||
5527 | /* Output the source line number correspondence information. This | |
14a774a9 | 5528 | information goes into the .debug_line section. */ |
71dfc51f | 5529 | |
a3f97cbb JW |
5530 | static void |
5531 | output_line_info () | |
5532 | { | |
a3f97cbb JW |
5533 | char line_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
5534 | char prev_line_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
5535 | register unsigned opc; | |
5536 | register unsigned n_op_args; | |
a3f97cbb JW |
5537 | register unsigned long ft_index; |
5538 | register unsigned long lt_index; | |
5539 | register unsigned long current_line; | |
5540 | register long line_offset; | |
5541 | register long line_delta; | |
5542 | register unsigned long current_file; | |
e90b62db | 5543 | register unsigned long function; |
71dfc51f | 5544 | |
14a774a9 | 5545 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, ".LTEND", ".LTSTART"); |
c5cec899 | 5546 | if (flag_debug_asm) |
71dfc51f RK |
5547 | fprintf (asm_out_file, "\t%s Length of Source Line Info.", |
5548 | ASM_COMMENT_START); | |
5549 | ||
a3f97cbb | 5550 | fputc ('\n', asm_out_file); |
14a774a9 | 5551 | ASM_OUTPUT_LABEL (asm_out_file, ".LTSTART"); |
a3f97cbb | 5552 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
c5cec899 | 5553 | if (flag_debug_asm) |
71dfc51f RK |
5554 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5555 | ||
a3f97cbb | 5556 | fputc ('\n', asm_out_file); |
7e23cb16 | 5557 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_prolog ()); |
c5cec899 | 5558 | if (flag_debug_asm) |
71dfc51f RK |
5559 | fprintf (asm_out_file, "\t%s Prolog Length", ASM_COMMENT_START); |
5560 | ||
a3f97cbb JW |
5561 | fputc ('\n', asm_out_file); |
5562 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_MIN_INSTR_LENGTH); | |
c5cec899 | 5563 | if (flag_debug_asm) |
71dfc51f RK |
5564 | fprintf (asm_out_file, "\t%s Minimum Instruction Length", |
5565 | ASM_COMMENT_START); | |
5566 | ||
a3f97cbb JW |
5567 | fputc ('\n', asm_out_file); |
5568 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_DEFAULT_IS_STMT_START); | |
c5cec899 | 5569 | if (flag_debug_asm) |
71dfc51f RK |
5570 | fprintf (asm_out_file, "\t%s Default is_stmt_start flag", |
5571 | ASM_COMMENT_START); | |
5572 | ||
a3f97cbb JW |
5573 | fputc ('\n', asm_out_file); |
5574 | fprintf (asm_out_file, "\t%s\t%d", ASM_BYTE_OP, DWARF_LINE_BASE); | |
c5cec899 | 5575 | if (flag_debug_asm) |
71dfc51f RK |
5576 | fprintf (asm_out_file, "\t%s Line Base Value (Special Opcodes)", |
5577 | ASM_COMMENT_START); | |
5578 | ||
a3f97cbb JW |
5579 | fputc ('\n', asm_out_file); |
5580 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_RANGE); | |
c5cec899 | 5581 | if (flag_debug_asm) |
71dfc51f RK |
5582 | fprintf (asm_out_file, "\t%s Line Range Value (Special Opcodes)", |
5583 | ASM_COMMENT_START); | |
5584 | ||
a3f97cbb JW |
5585 | fputc ('\n', asm_out_file); |
5586 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_OPCODE_BASE); | |
c5cec899 | 5587 | if (flag_debug_asm) |
71dfc51f RK |
5588 | fprintf (asm_out_file, "\t%s Special Opcode Base", ASM_COMMENT_START); |
5589 | ||
a3f97cbb JW |
5590 | fputc ('\n', asm_out_file); |
5591 | for (opc = 1; opc < DWARF_LINE_OPCODE_BASE; ++opc) | |
5592 | { | |
5593 | switch (opc) | |
5594 | { | |
5595 | case DW_LNS_advance_pc: | |
5596 | case DW_LNS_advance_line: | |
5597 | case DW_LNS_set_file: | |
5598 | case DW_LNS_set_column: | |
5599 | case DW_LNS_fixed_advance_pc: | |
5600 | n_op_args = 1; | |
5601 | break; | |
5602 | default: | |
5603 | n_op_args = 0; | |
5604 | break; | |
5605 | } | |
5606 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, n_op_args); | |
c5cec899 | 5607 | if (flag_debug_asm) |
71dfc51f RK |
5608 | fprintf (asm_out_file, "\t%s opcode: 0x%x has %d args", |
5609 | ASM_COMMENT_START, opc, n_op_args); | |
a3f97cbb JW |
5610 | fputc ('\n', asm_out_file); |
5611 | } | |
71dfc51f | 5612 | |
c5cec899 | 5613 | if (flag_debug_asm) |
71dfc51f RK |
5614 | fprintf (asm_out_file, "%s Include Directory Table\n", ASM_COMMENT_START); |
5615 | ||
a3f97cbb JW |
5616 | /* Include directory table is empty, at present */ |
5617 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
5618 | fputc ('\n', asm_out_file); | |
c5cec899 | 5619 | if (flag_debug_asm) |
71dfc51f RK |
5620 | fprintf (asm_out_file, "%s File Name Table\n", ASM_COMMENT_START); |
5621 | ||
a3f97cbb JW |
5622 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
5623 | { | |
c5cec899 | 5624 | if (flag_debug_asm) |
8d4e65a6 JL |
5625 | { |
5626 | ASM_OUTPUT_DWARF_STRING (asm_out_file, file_table[ft_index]); | |
2d8b0f3a | 5627 | fprintf (asm_out_file, "%s File Entry: 0x%lx", |
8d4e65a6 JL |
5628 | ASM_COMMENT_START, ft_index); |
5629 | } | |
5630 | else | |
5631 | { | |
5632 | ASM_OUTPUT_ASCII (asm_out_file, | |
5633 | file_table[ft_index], | |
c84e2712 | 5634 | (int) strlen (file_table[ft_index]) + 1); |
8d4e65a6 | 5635 | } |
71dfc51f | 5636 | |
a3f97cbb | 5637 | fputc ('\n', asm_out_file); |
71dfc51f | 5638 | |
a3f97cbb JW |
5639 | /* Include directory index */ |
5640 | output_uleb128 (0); | |
5641 | fputc ('\n', asm_out_file); | |
71dfc51f | 5642 | |
a3f97cbb JW |
5643 | /* Modification time */ |
5644 | output_uleb128 (0); | |
5645 | fputc ('\n', asm_out_file); | |
71dfc51f | 5646 | |
a3f97cbb JW |
5647 | /* File length in bytes */ |
5648 | output_uleb128 (0); | |
5649 | fputc ('\n', asm_out_file); | |
5650 | } | |
71dfc51f | 5651 | |
a3f97cbb JW |
5652 | /* Terminate the file name table */ |
5653 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
5654 | fputc ('\n', asm_out_file); | |
5655 | ||
2f22d404 JM |
5656 | /* We used to set the address register to the first location in the text |
5657 | section here, but that didn't accomplish anything since we already | |
5658 | have a line note for the opening brace of the first function. */ | |
a3f97cbb JW |
5659 | |
5660 | /* Generate the line number to PC correspondence table, encoded as | |
5661 | a series of state machine operations. */ | |
5662 | current_file = 1; | |
5663 | current_line = 1; | |
8b790721 | 5664 | strcpy (prev_line_label, text_section_label); |
a3f97cbb JW |
5665 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) |
5666 | { | |
2f22d404 JM |
5667 | register dw_line_info_ref line_info = &line_info_table[lt_index]; |
5668 | ||
5669 | /* Don't emit anything for redundant notes. Just updating the | |
5670 | address doesn't accomplish anything, because we already assume | |
5671 | that anything after the last address is this line. */ | |
5672 | if (line_info->dw_line_num == current_line | |
5673 | && line_info->dw_file_num == current_file) | |
5674 | continue; | |
71dfc51f | 5675 | |
f19a6894 JW |
5676 | /* Emit debug info for the address of the current line, choosing |
5677 | the encoding that uses the least amount of space. */ | |
5678 | /* ??? Unfortunately, we have little choice here currently, and must | |
5679 | always use the most general form. Gcc does not know the address | |
5680 | delta itself, so we can't use DW_LNS_advance_pc. There are no known | |
5681 | dwarf2 aware assemblers at this time, so we can't use any special | |
5682 | pseudo ops that would allow the assembler to optimally encode this for | |
5683 | us. Many ports do have length attributes which will give an upper | |
5684 | bound on the address range. We could perhaps use length attributes | |
5685 | to determine when it is safe to use DW_LNS_fixed_advance_pc. */ | |
5c90448c | 5686 | ASM_GENERATE_INTERNAL_LABEL (line_label, LINE_CODE_LABEL, lt_index); |
f19a6894 JW |
5687 | if (0) |
5688 | { | |
5689 | /* This can handle deltas up to 0xffff. This takes 3 bytes. */ | |
5690 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5691 | if (flag_debug_asm) |
f19a6894 JW |
5692 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5693 | ASM_COMMENT_START); | |
5694 | ||
5695 | fputc ('\n', asm_out_file); | |
5696 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, prev_line_label); | |
5697 | fputc ('\n', asm_out_file); | |
5698 | } | |
5699 | else | |
5700 | { | |
5701 | /* This can handle any delta. This takes 4+PTR_SIZE bytes. */ | |
5702 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5703 | if (flag_debug_asm) |
f19a6894 JW |
5704 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5705 | ASM_COMMENT_START); | |
5706 | fputc ('\n', asm_out_file); | |
5707 | output_uleb128 (1 + PTR_SIZE); | |
5708 | fputc ('\n', asm_out_file); | |
5709 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5710 | fputc ('\n', asm_out_file); | |
5711 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5712 | fputc ('\n', asm_out_file); | |
5713 | } | |
5714 | strcpy (prev_line_label, line_label); | |
5715 | ||
5716 | /* Emit debug info for the source file of the current line, if | |
5717 | different from the previous line. */ | |
a3f97cbb JW |
5718 | if (line_info->dw_file_num != current_file) |
5719 | { | |
5720 | current_file = line_info->dw_file_num; | |
5721 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 5722 | if (flag_debug_asm) |
71dfc51f RK |
5723 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
5724 | ||
a3f97cbb JW |
5725 | fputc ('\n', asm_out_file); |
5726 | output_uleb128 (current_file); | |
c5cec899 | 5727 | if (flag_debug_asm) |
b2932ae5 | 5728 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 5729 | |
a3f97cbb JW |
5730 | fputc ('\n', asm_out_file); |
5731 | } | |
71dfc51f | 5732 | |
f19a6894 JW |
5733 | /* Emit debug info for the current line number, choosing the encoding |
5734 | that uses the least amount of space. */ | |
2f22d404 | 5735 | if (line_info->dw_line_num != current_line) |
a3f97cbb | 5736 | { |
2f22d404 JM |
5737 | line_offset = line_info->dw_line_num - current_line; |
5738 | line_delta = line_offset - DWARF_LINE_BASE; | |
5739 | current_line = line_info->dw_line_num; | |
5740 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
5741 | { | |
5742 | /* This can handle deltas from -10 to 234, using the current | |
5743 | definitions of DWARF_LINE_BASE and DWARF_LINE_RANGE. This | |
5744 | takes 1 byte. */ | |
5745 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5746 | DWARF_LINE_OPCODE_BASE + line_delta); | |
5747 | if (flag_debug_asm) | |
5748 | fprintf (asm_out_file, | |
5749 | "\t%s line %ld", ASM_COMMENT_START, current_line); | |
71dfc51f | 5750 | |
2f22d404 JM |
5751 | fputc ('\n', asm_out_file); |
5752 | } | |
5753 | else | |
5754 | { | |
5755 | /* This can handle any delta. This takes at least 4 bytes, | |
5756 | depending on the value being encoded. */ | |
5757 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
5758 | if (flag_debug_asm) | |
5759 | fprintf (asm_out_file, "\t%s advance to line %ld", | |
5760 | ASM_COMMENT_START, current_line); | |
5761 | ||
5762 | fputc ('\n', asm_out_file); | |
5763 | output_sleb128 (line_offset); | |
5764 | fputc ('\n', asm_out_file); | |
5765 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
5766 | if (flag_debug_asm) | |
5767 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
5768 | fputc ('\n', asm_out_file); | |
5769 | } | |
a94dbf2c JM |
5770 | } |
5771 | else | |
5772 | { | |
2f22d404 | 5773 | /* We still need to start a new row, so output a copy insn. */ |
a94dbf2c | 5774 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); |
2f22d404 JM |
5775 | if (flag_debug_asm) |
5776 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
a94dbf2c | 5777 | fputc ('\n', asm_out_file); |
a3f97cbb | 5778 | } |
a3f97cbb JW |
5779 | } |
5780 | ||
f19a6894 JW |
5781 | /* Emit debug info for the address of the end of the function. */ |
5782 | if (0) | |
5783 | { | |
5784 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5785 | if (flag_debug_asm) |
f19a6894 JW |
5786 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5787 | ASM_COMMENT_START); | |
71dfc51f | 5788 | |
f19a6894 JW |
5789 | fputc ('\n', asm_out_file); |
5790 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, text_end_label, prev_line_label); | |
5791 | fputc ('\n', asm_out_file); | |
5792 | } | |
5793 | else | |
5794 | { | |
5795 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5796 | if (flag_debug_asm) |
f19a6894 JW |
5797 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); |
5798 | fputc ('\n', asm_out_file); | |
5799 | output_uleb128 (1 + PTR_SIZE); | |
5800 | fputc ('\n', asm_out_file); | |
5801 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5802 | fputc ('\n', asm_out_file); | |
5803 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_end_label); | |
5804 | fputc ('\n', asm_out_file); | |
5805 | } | |
bdb669cb | 5806 | |
a3f97cbb | 5807 | /* Output the marker for the end of the line number info. */ |
14a774a9 | 5808 | ASM_OUTPUT_LABEL (asm_out_file, ".LTEND"); |
a3f97cbb | 5809 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); |
c5cec899 | 5810 | if (flag_debug_asm) |
71dfc51f RK |
5811 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", ASM_COMMENT_START); |
5812 | ||
a3f97cbb JW |
5813 | fputc ('\n', asm_out_file); |
5814 | output_uleb128 (1); | |
5815 | fputc ('\n', asm_out_file); | |
5816 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
5817 | fputc ('\n', asm_out_file); | |
e90b62db JM |
5818 | |
5819 | function = 0; | |
5820 | current_file = 1; | |
5821 | current_line = 1; | |
5822 | for (lt_index = 0; lt_index < separate_line_info_table_in_use; ) | |
5823 | { | |
5824 | register dw_separate_line_info_ref line_info | |
5825 | = &separate_line_info_table[lt_index]; | |
71dfc51f | 5826 | |
2f22d404 JM |
5827 | /* Don't emit anything for redundant notes. */ |
5828 | if (line_info->dw_line_num == current_line | |
5829 | && line_info->dw_file_num == current_file | |
5830 | && line_info->function == function) | |
5831 | goto cont; | |
5832 | ||
f19a6894 JW |
5833 | /* Emit debug info for the address of the current line. If this is |
5834 | a new function, or the first line of a function, then we need | |
5835 | to handle it differently. */ | |
5c90448c JM |
5836 | ASM_GENERATE_INTERNAL_LABEL (line_label, SEPARATE_LINE_CODE_LABEL, |
5837 | lt_index); | |
e90b62db JM |
5838 | if (function != line_info->function) |
5839 | { | |
5840 | function = line_info->function; | |
71dfc51f | 5841 | |
e90b62db JM |
5842 | /* Set the address register to the first line in the function */ |
5843 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5844 | if (flag_debug_asm) |
e90b62db JM |
5845 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5846 | ASM_COMMENT_START); | |
71dfc51f | 5847 | |
e90b62db JM |
5848 | fputc ('\n', asm_out_file); |
5849 | output_uleb128 (1 + PTR_SIZE); | |
5850 | fputc ('\n', asm_out_file); | |
5851 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5852 | fputc ('\n', asm_out_file); | |
5853 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5854 | fputc ('\n', asm_out_file); | |
5855 | } | |
5856 | else | |
5857 | { | |
f19a6894 JW |
5858 | /* ??? See the DW_LNS_advance_pc comment above. */ |
5859 | if (0) | |
5860 | { | |
5861 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5862 | if (flag_debug_asm) |
f19a6894 JW |
5863 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5864 | ASM_COMMENT_START); | |
71dfc51f | 5865 | |
f19a6894 JW |
5866 | fputc ('\n', asm_out_file); |
5867 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
5868 | prev_line_label); | |
5869 | fputc ('\n', asm_out_file); | |
5870 | } | |
5871 | else | |
5872 | { | |
5873 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5874 | if (flag_debug_asm) |
f19a6894 JW |
5875 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5876 | ASM_COMMENT_START); | |
5877 | fputc ('\n', asm_out_file); | |
5878 | output_uleb128 (1 + PTR_SIZE); | |
5879 | fputc ('\n', asm_out_file); | |
5880 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5881 | fputc ('\n', asm_out_file); | |
5882 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5883 | fputc ('\n', asm_out_file); | |
5884 | } | |
e90b62db | 5885 | } |
f19a6894 | 5886 | strcpy (prev_line_label, line_label); |
71dfc51f | 5887 | |
f19a6894 JW |
5888 | /* Emit debug info for the source file of the current line, if |
5889 | different from the previous line. */ | |
e90b62db JM |
5890 | if (line_info->dw_file_num != current_file) |
5891 | { | |
5892 | current_file = line_info->dw_file_num; | |
5893 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 5894 | if (flag_debug_asm) |
71dfc51f RK |
5895 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
5896 | ||
e90b62db JM |
5897 | fputc ('\n', asm_out_file); |
5898 | output_uleb128 (current_file); | |
c5cec899 | 5899 | if (flag_debug_asm) |
b2932ae5 | 5900 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 5901 | |
e90b62db JM |
5902 | fputc ('\n', asm_out_file); |
5903 | } | |
71dfc51f | 5904 | |
f19a6894 JW |
5905 | /* Emit debug info for the current line number, choosing the encoding |
5906 | that uses the least amount of space. */ | |
e90b62db JM |
5907 | if (line_info->dw_line_num != current_line) |
5908 | { | |
5909 | line_offset = line_info->dw_line_num - current_line; | |
5910 | line_delta = line_offset - DWARF_LINE_BASE; | |
5911 | current_line = line_info->dw_line_num; | |
5912 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
5913 | { | |
5914 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5915 | DWARF_LINE_OPCODE_BASE + line_delta); | |
c5cec899 | 5916 | if (flag_debug_asm) |
71dfc51f | 5917 | fprintf (asm_out_file, |
2d8b0f3a | 5918 | "\t%s line %ld", ASM_COMMENT_START, current_line); |
71dfc51f | 5919 | |
e90b62db JM |
5920 | fputc ('\n', asm_out_file); |
5921 | } | |
5922 | else | |
5923 | { | |
5924 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
c5cec899 | 5925 | if (flag_debug_asm) |
2d8b0f3a | 5926 | fprintf (asm_out_file, "\t%s advance to line %ld", |
71dfc51f RK |
5927 | ASM_COMMENT_START, current_line); |
5928 | ||
e90b62db JM |
5929 | fputc ('\n', asm_out_file); |
5930 | output_sleb128 (line_offset); | |
5931 | fputc ('\n', asm_out_file); | |
5932 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
2f22d404 JM |
5933 | if (flag_debug_asm) |
5934 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
e90b62db JM |
5935 | fputc ('\n', asm_out_file); |
5936 | } | |
5937 | } | |
2f22d404 JM |
5938 | else |
5939 | { | |
5940 | /* We still need to start a new row, so output a copy insn. */ | |
5941 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
5942 | if (flag_debug_asm) | |
5943 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
5944 | fputc ('\n', asm_out_file); | |
5945 | } | |
71dfc51f | 5946 | |
2f22d404 | 5947 | cont: |
e90b62db | 5948 | ++lt_index; |
e90b62db JM |
5949 | |
5950 | /* If we're done with a function, end its sequence. */ | |
5951 | if (lt_index == separate_line_info_table_in_use | |
5952 | || separate_line_info_table[lt_index].function != function) | |
5953 | { | |
5954 | current_file = 1; | |
5955 | current_line = 1; | |
71dfc51f | 5956 | |
f19a6894 | 5957 | /* Emit debug info for the address of the end of the function. */ |
5c90448c | 5958 | ASM_GENERATE_INTERNAL_LABEL (line_label, FUNC_END_LABEL, function); |
f19a6894 JW |
5959 | if (0) |
5960 | { | |
5961 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5962 | if (flag_debug_asm) |
f19a6894 JW |
5963 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5964 | ASM_COMMENT_START); | |
5965 | ||
5966 | fputc ('\n', asm_out_file); | |
5967 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
5968 | prev_line_label); | |
5969 | fputc ('\n', asm_out_file); | |
5970 | } | |
5971 | else | |
5972 | { | |
5973 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5974 | if (flag_debug_asm) |
f19a6894 JW |
5975 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5976 | ASM_COMMENT_START); | |
5977 | fputc ('\n', asm_out_file); | |
5978 | output_uleb128 (1 + PTR_SIZE); | |
5979 | fputc ('\n', asm_out_file); | |
5980 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5981 | fputc ('\n', asm_out_file); | |
5982 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5983 | fputc ('\n', asm_out_file); | |
5984 | } | |
e90b62db JM |
5985 | |
5986 | /* Output the marker for the end of this sequence. */ | |
5987 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5988 | if (flag_debug_asm) |
e90b62db JM |
5989 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", |
5990 | ASM_COMMENT_START); | |
71dfc51f | 5991 | |
e90b62db JM |
5992 | fputc ('\n', asm_out_file); |
5993 | output_uleb128 (1); | |
5994 | fputc ('\n', asm_out_file); | |
5995 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
5996 | fputc ('\n', asm_out_file); | |
5997 | } | |
5998 | } | |
a3f97cbb JW |
5999 | } |
6000 | \f | |
71dfc51f RK |
6001 | /* Given a pointer to a BLOCK node return non-zero if (and only if) the node |
6002 | in question represents the outermost pair of curly braces (i.e. the "body | |
6003 | block") of a function or method. | |
6004 | ||
6005 | For any BLOCK node representing a "body block" of a function or method, the | |
6006 | BLOCK_SUPERCONTEXT of the node will point to another BLOCK node which | |
6007 | represents the outermost (function) scope for the function or method (i.e. | |
6008 | the one which includes the formal parameters). The BLOCK_SUPERCONTEXT of | |
6009 | *that* node in turn will point to the relevant FUNCTION_DECL node. */ | |
6010 | ||
6011 | static inline int | |
a3f97cbb JW |
6012 | is_body_block (stmt) |
6013 | register tree stmt; | |
6014 | { | |
6015 | if (TREE_CODE (stmt) == BLOCK) | |
6016 | { | |
6017 | register tree parent = BLOCK_SUPERCONTEXT (stmt); | |
6018 | ||
6019 | if (TREE_CODE (parent) == BLOCK) | |
6020 | { | |
6021 | register tree grandparent = BLOCK_SUPERCONTEXT (parent); | |
6022 | ||
6023 | if (TREE_CODE (grandparent) == FUNCTION_DECL) | |
6024 | return 1; | |
6025 | } | |
6026 | } | |
71dfc51f | 6027 | |
a3f97cbb JW |
6028 | return 0; |
6029 | } | |
6030 | ||
a3f97cbb JW |
6031 | /* Given a pointer to a tree node for some base type, return a pointer to |
6032 | a DIE that describes the given type. | |
6033 | ||
6034 | This routine must only be called for GCC type nodes that correspond to | |
6035 | Dwarf base (fundamental) types. */ | |
71dfc51f | 6036 | |
a3f97cbb JW |
6037 | static dw_die_ref |
6038 | base_type_die (type) | |
6039 | register tree type; | |
6040 | { | |
a9d38797 | 6041 | register dw_die_ref base_type_result; |
ec0ce6e2 | 6042 | register const char *type_name; |
a9d38797 | 6043 | register enum dwarf_type encoding; |
71dfc51f | 6044 | register tree name = TYPE_NAME (type); |
a3f97cbb | 6045 | |
a9d38797 JM |
6046 | if (TREE_CODE (type) == ERROR_MARK |
6047 | || TREE_CODE (type) == VOID_TYPE) | |
a3f97cbb JW |
6048 | return 0; |
6049 | ||
405f63da MM |
6050 | if (name) |
6051 | { | |
6052 | if (TREE_CODE (name) == TYPE_DECL) | |
6053 | name = DECL_NAME (name); | |
6054 | ||
6055 | type_name = IDENTIFIER_POINTER (name); | |
6056 | } | |
6057 | else | |
6058 | type_name = "__unknown__"; | |
a9d38797 | 6059 | |
a3f97cbb JW |
6060 | switch (TREE_CODE (type)) |
6061 | { | |
a3f97cbb | 6062 | case INTEGER_TYPE: |
a9d38797 | 6063 | /* Carefully distinguish the C character types, without messing |
a3f97cbb JW |
6064 | up if the language is not C. Note that we check only for the names |
6065 | that contain spaces; other names might occur by coincidence in other | |
6066 | languages. */ | |
a9d38797 JM |
6067 | if (! (TYPE_PRECISION (type) == CHAR_TYPE_SIZE |
6068 | && (type == char_type_node | |
6069 | || ! strcmp (type_name, "signed char") | |
6070 | || ! strcmp (type_name, "unsigned char")))) | |
a3f97cbb | 6071 | { |
a9d38797 JM |
6072 | if (TREE_UNSIGNED (type)) |
6073 | encoding = DW_ATE_unsigned; | |
6074 | else | |
6075 | encoding = DW_ATE_signed; | |
6076 | break; | |
a3f97cbb | 6077 | } |
a9d38797 | 6078 | /* else fall through */ |
a3f97cbb | 6079 | |
a9d38797 JM |
6080 | case CHAR_TYPE: |
6081 | /* GNU Pascal/Ada CHAR type. Not used in C. */ | |
6082 | if (TREE_UNSIGNED (type)) | |
6083 | encoding = DW_ATE_unsigned_char; | |
6084 | else | |
6085 | encoding = DW_ATE_signed_char; | |
a3f97cbb JW |
6086 | break; |
6087 | ||
6088 | case REAL_TYPE: | |
a9d38797 | 6089 | encoding = DW_ATE_float; |
a3f97cbb JW |
6090 | break; |
6091 | ||
405f63da MM |
6092 | /* Dwarf2 doesn't know anything about complex ints, so use |
6093 | a user defined type for it. */ | |
a3f97cbb | 6094 | case COMPLEX_TYPE: |
405f63da MM |
6095 | if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE) |
6096 | encoding = DW_ATE_complex_float; | |
6097 | else | |
6098 | encoding = DW_ATE_lo_user; | |
a3f97cbb JW |
6099 | break; |
6100 | ||
6101 | case BOOLEAN_TYPE: | |
a9d38797 JM |
6102 | /* GNU FORTRAN/Ada/C++ BOOLEAN type. */ |
6103 | encoding = DW_ATE_boolean; | |
a3f97cbb JW |
6104 | break; |
6105 | ||
6106 | default: | |
a9d38797 | 6107 | abort (); /* No other TREE_CODEs are Dwarf fundamental types. */ |
a3f97cbb JW |
6108 | } |
6109 | ||
a9d38797 | 6110 | base_type_result = new_die (DW_TAG_base_type, comp_unit_die); |
14a774a9 RK |
6111 | if (demangle_name_func) |
6112 | type_name = (*demangle_name_func) (type_name); | |
6113 | ||
a9d38797 JM |
6114 | add_AT_string (base_type_result, DW_AT_name, type_name); |
6115 | add_AT_unsigned (base_type_result, DW_AT_byte_size, | |
4e5a8d7b | 6116 | int_size_in_bytes (type)); |
a9d38797 | 6117 | add_AT_unsigned (base_type_result, DW_AT_encoding, encoding); |
a3f97cbb JW |
6118 | |
6119 | return base_type_result; | |
6120 | } | |
6121 | ||
6122 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a pointer to | |
6123 | the Dwarf "root" type for the given input type. The Dwarf "root" type of | |
6124 | a given type is generally the same as the given type, except that if the | |
6125 | given type is a pointer or reference type, then the root type of the given | |
6126 | type is the root type of the "basis" type for the pointer or reference | |
6127 | type. (This definition of the "root" type is recursive.) Also, the root | |
6128 | type of a `const' qualified type or a `volatile' qualified type is the | |
6129 | root type of the given type without the qualifiers. */ | |
71dfc51f | 6130 | |
a3f97cbb JW |
6131 | static tree |
6132 | root_type (type) | |
6133 | register tree type; | |
6134 | { | |
6135 | if (TREE_CODE (type) == ERROR_MARK) | |
6136 | return error_mark_node; | |
6137 | ||
6138 | switch (TREE_CODE (type)) | |
6139 | { | |
6140 | case ERROR_MARK: | |
6141 | return error_mark_node; | |
6142 | ||
6143 | case POINTER_TYPE: | |
6144 | case REFERENCE_TYPE: | |
6145 | return type_main_variant (root_type (TREE_TYPE (type))); | |
6146 | ||
6147 | default: | |
6148 | return type_main_variant (type); | |
6149 | } | |
6150 | } | |
6151 | ||
6152 | /* Given a pointer to an arbitrary ..._TYPE tree node, return non-zero if the | |
6153 | given input type is a Dwarf "fundamental" type. Otherwise return null. */ | |
71dfc51f RK |
6154 | |
6155 | static inline int | |
a3f97cbb JW |
6156 | is_base_type (type) |
6157 | register tree type; | |
6158 | { | |
6159 | switch (TREE_CODE (type)) | |
6160 | { | |
6161 | case ERROR_MARK: | |
6162 | case VOID_TYPE: | |
6163 | case INTEGER_TYPE: | |
6164 | case REAL_TYPE: | |
6165 | case COMPLEX_TYPE: | |
6166 | case BOOLEAN_TYPE: | |
6167 | case CHAR_TYPE: | |
6168 | return 1; | |
6169 | ||
6170 | case SET_TYPE: | |
6171 | case ARRAY_TYPE: | |
6172 | case RECORD_TYPE: | |
6173 | case UNION_TYPE: | |
6174 | case QUAL_UNION_TYPE: | |
6175 | case ENUMERAL_TYPE: | |
6176 | case FUNCTION_TYPE: | |
6177 | case METHOD_TYPE: | |
6178 | case POINTER_TYPE: | |
6179 | case REFERENCE_TYPE: | |
6180 | case FILE_TYPE: | |
6181 | case OFFSET_TYPE: | |
6182 | case LANG_TYPE: | |
6183 | return 0; | |
6184 | ||
6185 | default: | |
6186 | abort (); | |
6187 | } | |
71dfc51f | 6188 | |
a3f97cbb JW |
6189 | return 0; |
6190 | } | |
6191 | ||
6192 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a debugging | |
6193 | entry that chains various modifiers in front of the given type. */ | |
71dfc51f | 6194 | |
a3f97cbb JW |
6195 | static dw_die_ref |
6196 | modified_type_die (type, is_const_type, is_volatile_type, context_die) | |
6197 | register tree type; | |
6198 | register int is_const_type; | |
6199 | register int is_volatile_type; | |
6200 | register dw_die_ref context_die; | |
6201 | { | |
6202 | register enum tree_code code = TREE_CODE (type); | |
6203 | register dw_die_ref mod_type_die = NULL; | |
6204 | register dw_die_ref sub_die = NULL; | |
dfcf9891 | 6205 | register tree item_type = NULL; |
a3f97cbb JW |
6206 | |
6207 | if (code != ERROR_MARK) | |
6208 | { | |
a94dbf2c | 6209 | type = build_type_variant (type, is_const_type, is_volatile_type); |
bdb669cb JM |
6210 | |
6211 | mod_type_die = lookup_type_die (type); | |
6212 | if (mod_type_die) | |
6213 | return mod_type_die; | |
6214 | ||
a94dbf2c JM |
6215 | /* Handle C typedef types. */ |
6216 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
6217 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
6218 | { | |
6219 | tree dtype = TREE_TYPE (TYPE_NAME (type)); | |
6220 | if (type == dtype) | |
6221 | { | |
6222 | /* For a named type, use the typedef. */ | |
6223 | gen_type_die (type, context_die); | |
6224 | mod_type_die = lookup_type_die (type); | |
6225 | } | |
71dfc51f | 6226 | |
a94dbf2c JM |
6227 | else if (is_const_type < TYPE_READONLY (dtype) |
6228 | || is_volatile_type < TYPE_VOLATILE (dtype)) | |
6229 | /* cv-unqualified version of named type. Just use the unnamed | |
6230 | type to which it refers. */ | |
71dfc51f RK |
6231 | mod_type_die |
6232 | = modified_type_die (DECL_ORIGINAL_TYPE (TYPE_NAME (type)), | |
6233 | is_const_type, is_volatile_type, | |
6234 | context_die); | |
6235 | /* Else cv-qualified version of named type; fall through. */ | |
a94dbf2c JM |
6236 | } |
6237 | ||
6238 | if (mod_type_die) | |
6239 | /* OK */; | |
6240 | else if (is_const_type) | |
a3f97cbb | 6241 | { |
ab72d377 | 6242 | mod_type_die = new_die (DW_TAG_const_type, comp_unit_die); |
a9d38797 | 6243 | sub_die = modified_type_die (type, 0, is_volatile_type, context_die); |
a3f97cbb JW |
6244 | } |
6245 | else if (is_volatile_type) | |
6246 | { | |
ab72d377 | 6247 | mod_type_die = new_die (DW_TAG_volatile_type, comp_unit_die); |
a9d38797 | 6248 | sub_die = modified_type_die (type, 0, 0, context_die); |
a3f97cbb JW |
6249 | } |
6250 | else if (code == POINTER_TYPE) | |
6251 | { | |
ab72d377 | 6252 | mod_type_die = new_die (DW_TAG_pointer_type, comp_unit_die); |
a3f97cbb | 6253 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 6254 | #if 0 |
a3f97cbb | 6255 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 6256 | #endif |
a3f97cbb | 6257 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
6258 | } |
6259 | else if (code == REFERENCE_TYPE) | |
6260 | { | |
ab72d377 | 6261 | mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die); |
a3f97cbb | 6262 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 6263 | #if 0 |
a3f97cbb | 6264 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 6265 | #endif |
a3f97cbb | 6266 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
6267 | } |
6268 | else if (is_base_type (type)) | |
71dfc51f | 6269 | mod_type_die = base_type_die (type); |
a3f97cbb JW |
6270 | else |
6271 | { | |
4b674448 JM |
6272 | gen_type_die (type, context_die); |
6273 | ||
a3f97cbb JW |
6274 | /* We have to get the type_main_variant here (and pass that to the |
6275 | `lookup_type_die' routine) because the ..._TYPE node we have | |
6276 | might simply be a *copy* of some original type node (where the | |
6277 | copy was created to help us keep track of typedef names) and | |
6278 | that copy might have a different TYPE_UID from the original | |
a94dbf2c | 6279 | ..._TYPE node. */ |
a3f97cbb | 6280 | mod_type_die = lookup_type_die (type_main_variant (type)); |
3a88cbd1 JL |
6281 | if (mod_type_die == NULL) |
6282 | abort (); | |
a3f97cbb JW |
6283 | } |
6284 | } | |
71dfc51f | 6285 | |
dfcf9891 JW |
6286 | equate_type_number_to_die (type, mod_type_die); |
6287 | if (item_type) | |
71dfc51f RK |
6288 | /* We must do this after the equate_type_number_to_die call, in case |
6289 | this is a recursive type. This ensures that the modified_type_die | |
6290 | recursion will terminate even if the type is recursive. Recursive | |
6291 | types are possible in Ada. */ | |
6292 | sub_die = modified_type_die (item_type, | |
6293 | TYPE_READONLY (item_type), | |
6294 | TYPE_VOLATILE (item_type), | |
6295 | context_die); | |
6296 | ||
a3f97cbb | 6297 | if (sub_die != NULL) |
71dfc51f RK |
6298 | add_AT_die_ref (mod_type_die, DW_AT_type, sub_die); |
6299 | ||
a3f97cbb JW |
6300 | return mod_type_die; |
6301 | } | |
6302 | ||
a3f97cbb JW |
6303 | /* Given a pointer to an arbitrary ..._TYPE tree node, return true if it is |
6304 | an enumerated type. */ | |
71dfc51f RK |
6305 | |
6306 | static inline int | |
a3f97cbb JW |
6307 | type_is_enum (type) |
6308 | register tree type; | |
6309 | { | |
6310 | return TREE_CODE (type) == ENUMERAL_TYPE; | |
6311 | } | |
6312 | ||
a3f97cbb | 6313 | /* Return a location descriptor that designates a machine register. */ |
71dfc51f | 6314 | |
a3f97cbb JW |
6315 | static dw_loc_descr_ref |
6316 | reg_loc_descriptor (rtl) | |
6317 | register rtx rtl; | |
6318 | { | |
6319 | register dw_loc_descr_ref loc_result = NULL; | |
6320 | register unsigned reg = reg_number (rtl); | |
71dfc51f | 6321 | |
85066503 | 6322 | if (reg <= 31) |
71dfc51f | 6323 | loc_result = new_loc_descr (DW_OP_reg0 + reg, 0, 0); |
a3f97cbb | 6324 | else |
71dfc51f RK |
6325 | loc_result = new_loc_descr (DW_OP_regx, reg, 0); |
6326 | ||
a3f97cbb JW |
6327 | return loc_result; |
6328 | } | |
6329 | ||
6330 | /* Return a location descriptor that designates a base+offset location. */ | |
71dfc51f | 6331 | |
a3f97cbb JW |
6332 | static dw_loc_descr_ref |
6333 | based_loc_descr (reg, offset) | |
6334 | unsigned reg; | |
6335 | long int offset; | |
6336 | { | |
6337 | register dw_loc_descr_ref loc_result; | |
810429b7 JM |
6338 | /* For the "frame base", we use the frame pointer or stack pointer |
6339 | registers, since the RTL for local variables is relative to one of | |
6340 | them. */ | |
6341 | register unsigned fp_reg = DBX_REGISTER_NUMBER (frame_pointer_needed | |
b1ccbc24 | 6342 | ? HARD_FRAME_POINTER_REGNUM |
810429b7 | 6343 | : STACK_POINTER_REGNUM); |
71dfc51f | 6344 | |
a3f97cbb | 6345 | if (reg == fp_reg) |
71dfc51f | 6346 | loc_result = new_loc_descr (DW_OP_fbreg, offset, 0); |
85066503 | 6347 | else if (reg <= 31) |
71dfc51f | 6348 | loc_result = new_loc_descr (DW_OP_breg0 + reg, offset, 0); |
a3f97cbb | 6349 | else |
71dfc51f RK |
6350 | loc_result = new_loc_descr (DW_OP_bregx, reg, offset); |
6351 | ||
a3f97cbb JW |
6352 | return loc_result; |
6353 | } | |
6354 | ||
6355 | /* Return true if this RTL expression describes a base+offset calculation. */ | |
71dfc51f RK |
6356 | |
6357 | static inline int | |
a3f97cbb JW |
6358 | is_based_loc (rtl) |
6359 | register rtx rtl; | |
6360 | { | |
71dfc51f RK |
6361 | return (GET_CODE (rtl) == PLUS |
6362 | && ((GET_CODE (XEXP (rtl, 0)) == REG | |
6363 | && GET_CODE (XEXP (rtl, 1)) == CONST_INT))); | |
a3f97cbb JW |
6364 | } |
6365 | ||
6366 | /* The following routine converts the RTL for a variable or parameter | |
6367 | (resident in memory) into an equivalent Dwarf representation of a | |
6368 | mechanism for getting the address of that same variable onto the top of a | |
6369 | hypothetical "address evaluation" stack. | |
71dfc51f | 6370 | |
a3f97cbb JW |
6371 | When creating memory location descriptors, we are effectively transforming |
6372 | the RTL for a memory-resident object into its Dwarf postfix expression | |
6373 | equivalent. This routine recursively descends an RTL tree, turning | |
e60d4d7b JL |
6374 | it into Dwarf postfix code as it goes. |
6375 | ||
6376 | MODE is the mode of the memory reference, needed to handle some | |
6377 | autoincrement addressing modes. */ | |
71dfc51f | 6378 | |
a3f97cbb | 6379 | static dw_loc_descr_ref |
e60d4d7b | 6380 | mem_loc_descriptor (rtl, mode) |
a3f97cbb | 6381 | register rtx rtl; |
e60d4d7b | 6382 | enum machine_mode mode; |
a3f97cbb JW |
6383 | { |
6384 | dw_loc_descr_ref mem_loc_result = NULL; | |
6385 | /* Note that for a dynamically sized array, the location we will generate a | |
6386 | description of here will be the lowest numbered location which is | |
6387 | actually within the array. That's *not* necessarily the same as the | |
6388 | zeroth element of the array. */ | |
71dfc51f | 6389 | |
a3f97cbb JW |
6390 | switch (GET_CODE (rtl)) |
6391 | { | |
e60d4d7b JL |
6392 | case POST_INC: |
6393 | case POST_DEC: | |
6394 | /* POST_INC and POST_DEC can be handled just like a SUBREG. So we | |
6395 | just fall into the SUBREG code. */ | |
6396 | ||
6397 | /* ... fall through ... */ | |
6398 | ||
a3f97cbb JW |
6399 | case SUBREG: |
6400 | /* The case of a subreg may arise when we have a local (register) | |
6401 | variable or a formal (register) parameter which doesn't quite fill | |
6402 | up an entire register. For now, just assume that it is | |
6403 | legitimate to make the Dwarf info refer to the whole register which | |
6404 | contains the given subreg. */ | |
6405 | rtl = XEXP (rtl, 0); | |
71dfc51f RK |
6406 | |
6407 | /* ... fall through ... */ | |
a3f97cbb JW |
6408 | |
6409 | case REG: | |
6410 | /* Whenever a register number forms a part of the description of the | |
6411 | method for calculating the (dynamic) address of a memory resident | |
6412 | object, DWARF rules require the register number be referred to as | |
6413 | a "base register". This distinction is not based in any way upon | |
6414 | what category of register the hardware believes the given register | |
6415 | belongs to. This is strictly DWARF terminology we're dealing with | |
6416 | here. Note that in cases where the location of a memory-resident | |
6417 | data object could be expressed as: OP_ADD (OP_BASEREG (basereg), | |
6418 | OP_CONST (0)) the actual DWARF location descriptor that we generate | |
6419 | may just be OP_BASEREG (basereg). This may look deceptively like | |
6420 | the object in question was allocated to a register (rather than in | |
6421 | memory) so DWARF consumers need to be aware of the subtle | |
6422 | distinction between OP_REG and OP_BASEREG. */ | |
6423 | mem_loc_result = based_loc_descr (reg_number (rtl), 0); | |
6424 | break; | |
6425 | ||
6426 | case MEM: | |
e60d4d7b | 6427 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), mode); |
a3f97cbb JW |
6428 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_deref, 0, 0)); |
6429 | break; | |
6430 | ||
368f4cd6 NC |
6431 | case LABEL_REF: |
6432 | /* Some ports can transform a symbol ref into a label ref, because | |
6433 | the symbol ref is too far away and has to be dumped into a constant | |
6434 | pool. */ | |
a3f97cbb JW |
6435 | case CONST: |
6436 | case SYMBOL_REF: | |
6437 | mem_loc_result = new_loc_descr (DW_OP_addr, 0, 0); | |
6438 | mem_loc_result->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
6439 | mem_loc_result->dw_loc_oprnd1.v.val_addr = addr_to_string (rtl); | |
6440 | break; | |
6441 | ||
e60d4d7b JL |
6442 | case PRE_INC: |
6443 | case PRE_DEC: | |
6444 | /* Turn these into a PLUS expression and fall into the PLUS code | |
6445 | below. */ | |
6446 | rtl = gen_rtx_PLUS (word_mode, XEXP (rtl, 0), | |
6447 | GEN_INT (GET_CODE (rtl) == PRE_INC | |
6448 | ? GET_MODE_UNIT_SIZE (mode) | |
6449 | : - GET_MODE_UNIT_SIZE (mode))); | |
6450 | ||
6451 | /* ... fall through ... */ | |
6452 | ||
a3f97cbb JW |
6453 | case PLUS: |
6454 | if (is_based_loc (rtl)) | |
71dfc51f RK |
6455 | mem_loc_result = based_loc_descr (reg_number (XEXP (rtl, 0)), |
6456 | INTVAL (XEXP (rtl, 1))); | |
a3f97cbb JW |
6457 | else |
6458 | { | |
e60d4d7b JL |
6459 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0), |
6460 | mode)); | |
6461 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1), | |
6462 | mode)); | |
a3f97cbb JW |
6463 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_plus, 0, 0)); |
6464 | } | |
6465 | break; | |
6466 | ||
dd2478ae JW |
6467 | case MULT: |
6468 | /* If a pseudo-reg is optimized away, it is possible for it to | |
6469 | be replaced with a MEM containing a multiply. */ | |
e60d4d7b JL |
6470 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0), mode)); |
6471 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1), mode)); | |
dd2478ae JW |
6472 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_mul, 0, 0)); |
6473 | break; | |
6474 | ||
a3f97cbb JW |
6475 | case CONST_INT: |
6476 | mem_loc_result = new_loc_descr (DW_OP_constu, INTVAL (rtl), 0); | |
6477 | break; | |
6478 | ||
6479 | default: | |
6480 | abort (); | |
6481 | } | |
71dfc51f | 6482 | |
a3f97cbb JW |
6483 | return mem_loc_result; |
6484 | } | |
6485 | ||
956d6950 | 6486 | /* Return a descriptor that describes the concatenation of two locations. |
4401bf24 JL |
6487 | This is typically a complex variable. */ |
6488 | ||
6489 | static dw_loc_descr_ref | |
6490 | concat_loc_descriptor (x0, x1) | |
6491 | register rtx x0, x1; | |
6492 | { | |
6493 | dw_loc_descr_ref cc_loc_result = NULL; | |
6494 | ||
6495 | if (!is_pseudo_reg (x0) | |
6496 | && (GET_CODE (x0) != MEM || !is_pseudo_reg (XEXP (x0, 0)))) | |
6497 | add_loc_descr (&cc_loc_result, loc_descriptor (x0)); | |
6498 | add_loc_descr (&cc_loc_result, | |
6499 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x0)), 0)); | |
6500 | ||
6501 | if (!is_pseudo_reg (x1) | |
6502 | && (GET_CODE (x1) != MEM || !is_pseudo_reg (XEXP (x1, 0)))) | |
6503 | add_loc_descr (&cc_loc_result, loc_descriptor (x1)); | |
6504 | add_loc_descr (&cc_loc_result, | |
6505 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x1)), 0)); | |
6506 | ||
6507 | return cc_loc_result; | |
6508 | } | |
6509 | ||
a3f97cbb JW |
6510 | /* Output a proper Dwarf location descriptor for a variable or parameter |
6511 | which is either allocated in a register or in a memory location. For a | |
6512 | register, we just generate an OP_REG and the register number. For a | |
6513 | memory location we provide a Dwarf postfix expression describing how to | |
6514 | generate the (dynamic) address of the object onto the address stack. */ | |
71dfc51f | 6515 | |
a3f97cbb JW |
6516 | static dw_loc_descr_ref |
6517 | loc_descriptor (rtl) | |
6518 | register rtx rtl; | |
6519 | { | |
6520 | dw_loc_descr_ref loc_result = NULL; | |
6521 | switch (GET_CODE (rtl)) | |
6522 | { | |
6523 | case SUBREG: | |
a3f97cbb JW |
6524 | /* The case of a subreg may arise when we have a local (register) |
6525 | variable or a formal (register) parameter which doesn't quite fill | |
71dfc51f | 6526 | up an entire register. For now, just assume that it is |
a3f97cbb JW |
6527 | legitimate to make the Dwarf info refer to the whole register which |
6528 | contains the given subreg. */ | |
a3f97cbb | 6529 | rtl = XEXP (rtl, 0); |
71dfc51f RK |
6530 | |
6531 | /* ... fall through ... */ | |
a3f97cbb JW |
6532 | |
6533 | case REG: | |
5c90448c | 6534 | loc_result = reg_loc_descriptor (rtl); |
a3f97cbb JW |
6535 | break; |
6536 | ||
6537 | case MEM: | |
e60d4d7b | 6538 | loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl)); |
a3f97cbb JW |
6539 | break; |
6540 | ||
4401bf24 JL |
6541 | case CONCAT: |
6542 | loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1)); | |
6543 | break; | |
6544 | ||
a3f97cbb | 6545 | default: |
71dfc51f | 6546 | abort (); |
a3f97cbb | 6547 | } |
71dfc51f | 6548 | |
a3f97cbb JW |
6549 | return loc_result; |
6550 | } | |
6551 | ||
6552 | /* Given an unsigned value, round it up to the lowest multiple of `boundary' | |
6553 | which is not less than the value itself. */ | |
71dfc51f RK |
6554 | |
6555 | static inline unsigned | |
a3f97cbb JW |
6556 | ceiling (value, boundary) |
6557 | register unsigned value; | |
6558 | register unsigned boundary; | |
6559 | { | |
6560 | return (((value + boundary - 1) / boundary) * boundary); | |
6561 | } | |
6562 | ||
6563 | /* Given a pointer to what is assumed to be a FIELD_DECL node, return a | |
6564 | pointer to the declared type for the relevant field variable, or return | |
6565 | `integer_type_node' if the given node turns out to be an | |
6566 | ERROR_MARK node. */ | |
71dfc51f RK |
6567 | |
6568 | static inline tree | |
a3f97cbb JW |
6569 | field_type (decl) |
6570 | register tree decl; | |
6571 | { | |
6572 | register tree type; | |
6573 | ||
6574 | if (TREE_CODE (decl) == ERROR_MARK) | |
6575 | return integer_type_node; | |
6576 | ||
6577 | type = DECL_BIT_FIELD_TYPE (decl); | |
71dfc51f | 6578 | if (type == NULL_TREE) |
a3f97cbb JW |
6579 | type = TREE_TYPE (decl); |
6580 | ||
6581 | return type; | |
6582 | } | |
6583 | ||
6584 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
6585 | node, return the alignment in bits for the type, or else return | |
6586 | BITS_PER_WORD if the node actually turns out to be an | |
6587 | ERROR_MARK node. */ | |
71dfc51f RK |
6588 | |
6589 | static inline unsigned | |
a3f97cbb JW |
6590 | simple_type_align_in_bits (type) |
6591 | register tree type; | |
6592 | { | |
6593 | return (TREE_CODE (type) != ERROR_MARK) ? TYPE_ALIGN (type) : BITS_PER_WORD; | |
6594 | } | |
6595 | ||
6596 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
6597 | node, return the size in bits for the type if it is a constant, or else | |
6598 | return the alignment for the type if the type's size is not constant, or | |
6599 | else return BITS_PER_WORD if the type actually turns out to be an | |
6600 | ERROR_MARK node. */ | |
71dfc51f RK |
6601 | |
6602 | static inline unsigned | |
a3f97cbb JW |
6603 | simple_type_size_in_bits (type) |
6604 | register tree type; | |
6605 | { | |
6606 | if (TREE_CODE (type) == ERROR_MARK) | |
6607 | return BITS_PER_WORD; | |
6608 | else | |
6609 | { | |
6610 | register tree type_size_tree = TYPE_SIZE (type); | |
6611 | ||
6612 | if (TREE_CODE (type_size_tree) != INTEGER_CST) | |
6613 | return TYPE_ALIGN (type); | |
6614 | ||
6615 | return (unsigned) TREE_INT_CST_LOW (type_size_tree); | |
6616 | } | |
6617 | } | |
6618 | ||
6619 | /* Given a pointer to what is assumed to be a FIELD_DECL node, compute and | |
6620 | return the byte offset of the lowest addressed byte of the "containing | |
6621 | object" for the given FIELD_DECL, or return 0 if we are unable to | |
6622 | determine what that offset is, either because the argument turns out to | |
6623 | be a pointer to an ERROR_MARK node, or because the offset is actually | |
6624 | variable. (We can't handle the latter case just yet). */ | |
71dfc51f | 6625 | |
a3f97cbb JW |
6626 | static unsigned |
6627 | field_byte_offset (decl) | |
6628 | register tree decl; | |
6629 | { | |
6630 | register unsigned type_align_in_bytes; | |
6631 | register unsigned type_align_in_bits; | |
6632 | register unsigned type_size_in_bits; | |
6633 | register unsigned object_offset_in_align_units; | |
6634 | register unsigned object_offset_in_bits; | |
6635 | register unsigned object_offset_in_bytes; | |
6636 | register tree type; | |
6637 | register tree bitpos_tree; | |
6638 | register tree field_size_tree; | |
6639 | register unsigned bitpos_int; | |
6640 | register unsigned deepest_bitpos; | |
6641 | register unsigned field_size_in_bits; | |
6642 | ||
6643 | if (TREE_CODE (decl) == ERROR_MARK) | |
6644 | return 0; | |
6645 | ||
6646 | if (TREE_CODE (decl) != FIELD_DECL) | |
6647 | abort (); | |
6648 | ||
6649 | type = field_type (decl); | |
6650 | ||
6651 | bitpos_tree = DECL_FIELD_BITPOS (decl); | |
6652 | field_size_tree = DECL_SIZE (decl); | |
6653 | ||
14a774a9 | 6654 | /* We cannot yet cope with fields whose positions are variable, so |
a3f97cbb JW |
6655 | for now, when we see such things, we simply return 0. Someday, we may |
6656 | be able to handle such cases, but it will be damn difficult. */ | |
6657 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
6658 | return 0; | |
14a774a9 | 6659 | |
a3f97cbb JW |
6660 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); |
6661 | ||
14a774a9 RK |
6662 | /* If we don't know the size of the field, pretend it's a full word. */ |
6663 | if (TREE_CODE (field_size_tree) == INTEGER_CST) | |
6664 | field_size_in_bits = (unsigned) TREE_INT_CST_LOW (field_size_tree); | |
6665 | else | |
6666 | field_size_in_bits = BITS_PER_WORD; | |
a3f97cbb JW |
6667 | |
6668 | type_size_in_bits = simple_type_size_in_bits (type); | |
a3f97cbb JW |
6669 | type_align_in_bits = simple_type_align_in_bits (type); |
6670 | type_align_in_bytes = type_align_in_bits / BITS_PER_UNIT; | |
6671 | ||
6672 | /* Note that the GCC front-end doesn't make any attempt to keep track of | |
6673 | the starting bit offset (relative to the start of the containing | |
6674 | structure type) of the hypothetical "containing object" for a bit- | |
6675 | field. Thus, when computing the byte offset value for the start of the | |
6676 | "containing object" of a bit-field, we must deduce this information on | |
6677 | our own. This can be rather tricky to do in some cases. For example, | |
6678 | handling the following structure type definition when compiling for an | |
6679 | i386/i486 target (which only aligns long long's to 32-bit boundaries) | |
6680 | can be very tricky: | |
6681 | ||
6682 | struct S { int field1; long long field2:31; }; | |
6683 | ||
6684 | Fortunately, there is a simple rule-of-thumb which can be | |
6685 | used in such cases. When compiling for an i386/i486, GCC will allocate | |
6686 | 8 bytes for the structure shown above. It decides to do this based upon | |
6687 | one simple rule for bit-field allocation. Quite simply, GCC allocates | |
6688 | each "containing object" for each bit-field at the first (i.e. lowest | |
6689 | addressed) legitimate alignment boundary (based upon the required | |
6690 | minimum alignment for the declared type of the field) which it can | |
6691 | possibly use, subject to the condition that there is still enough | |
6692 | available space remaining in the containing object (when allocated at | |
6693 | the selected point) to fully accommodate all of the bits of the | |
6694 | bit-field itself. This simple rule makes it obvious why GCC allocates | |
6695 | 8 bytes for each object of the structure type shown above. When looking | |
6696 | for a place to allocate the "containing object" for `field2', the | |
6697 | compiler simply tries to allocate a 64-bit "containing object" at each | |
6698 | successive 32-bit boundary (starting at zero) until it finds a place to | |
6699 | allocate that 64- bit field such that at least 31 contiguous (and | |
6700 | previously unallocated) bits remain within that selected 64 bit field. | |
6701 | (As it turns out, for the example above, the compiler finds that it is | |
6702 | OK to allocate the "containing object" 64-bit field at bit-offset zero | |
6703 | within the structure type.) Here we attempt to work backwards from the | |
6704 | limited set of facts we're given, and we try to deduce from those facts, | |
6705 | where GCC must have believed that the containing object started (within | |
6706 | the structure type). The value we deduce is then used (by the callers of | |
6707 | this routine) to generate DW_AT_location and DW_AT_bit_offset attributes | |
6708 | for fields (both bit-fields and, in the case of DW_AT_location, regular | |
6709 | fields as well). */ | |
6710 | ||
6711 | /* Figure out the bit-distance from the start of the structure to the | |
6712 | "deepest" bit of the bit-field. */ | |
6713 | deepest_bitpos = bitpos_int + field_size_in_bits; | |
6714 | ||
6715 | /* This is the tricky part. Use some fancy footwork to deduce where the | |
6716 | lowest addressed bit of the containing object must be. */ | |
6717 | object_offset_in_bits | |
6718 | = ceiling (deepest_bitpos, type_align_in_bits) - type_size_in_bits; | |
6719 | ||
6720 | /* Compute the offset of the containing object in "alignment units". */ | |
6721 | object_offset_in_align_units = object_offset_in_bits / type_align_in_bits; | |
6722 | ||
6723 | /* Compute the offset of the containing object in bytes. */ | |
6724 | object_offset_in_bytes = object_offset_in_align_units * type_align_in_bytes; | |
6725 | ||
6726 | return object_offset_in_bytes; | |
6727 | } | |
a3f97cbb | 6728 | \f |
71dfc51f RK |
6729 | /* The following routines define various Dwarf attributes and any data |
6730 | associated with them. */ | |
a3f97cbb | 6731 | |
ef76d03b | 6732 | /* Add a location description attribute value to a DIE. |
a3f97cbb | 6733 | |
ef76d03b | 6734 | This emits location attributes suitable for whole variables and |
a3f97cbb JW |
6735 | whole parameters. Note that the location attributes for struct fields are |
6736 | generated by the routine `data_member_location_attribute' below. */ | |
71dfc51f | 6737 | |
a3f97cbb | 6738 | static void |
ef76d03b | 6739 | add_AT_location_description (die, attr_kind, rtl) |
a3f97cbb | 6740 | dw_die_ref die; |
ef76d03b | 6741 | enum dwarf_attribute attr_kind; |
a3f97cbb JW |
6742 | register rtx rtl; |
6743 | { | |
a3f97cbb JW |
6744 | /* Handle a special case. If we are about to output a location descriptor |
6745 | for a variable or parameter which has been optimized out of existence, | |
6a7a9f01 | 6746 | don't do that. A variable which has been optimized out |
a3f97cbb JW |
6747 | of existence will have a DECL_RTL value which denotes a pseudo-reg. |
6748 | Currently, in some rare cases, variables can have DECL_RTL values which | |
6749 | look like (MEM (REG pseudo-reg#)). These cases are due to bugs | |
6750 | elsewhere in the compiler. We treat such cases as if the variable(s) in | |
6a7a9f01 | 6751 | question had been optimized out of existence. */ |
a3f97cbb | 6752 | |
6a7a9f01 JM |
6753 | if (is_pseudo_reg (rtl) |
6754 | || (GET_CODE (rtl) == MEM | |
4401bf24 | 6755 | && is_pseudo_reg (XEXP (rtl, 0))) |
bce8fed7 JL |
6756 | /* This can happen for a PARM_DECL with a DECL_INCOMING_RTL which |
6757 | references the internal argument pointer (a pseudo) in a function | |
6758 | where all references to the internal argument pointer were | |
6759 | eliminated via the optimizers. */ | |
6760 | || (GET_CODE (rtl) == MEM | |
6761 | && GET_CODE (XEXP (rtl, 0)) == PLUS | |
6762 | && is_pseudo_reg (XEXP (XEXP (rtl, 0), 0))) | |
4401bf24 JL |
6763 | || (GET_CODE (rtl) == CONCAT |
6764 | && is_pseudo_reg (XEXP (rtl, 0)) | |
6765 | && is_pseudo_reg (XEXP (rtl, 1)))) | |
6a7a9f01 | 6766 | return; |
a3f97cbb | 6767 | |
6a7a9f01 | 6768 | add_AT_loc (die, attr_kind, loc_descriptor (rtl)); |
a3f97cbb JW |
6769 | } |
6770 | ||
6771 | /* Attach the specialized form of location attribute used for data | |
6772 | members of struct and union types. In the special case of a | |
6773 | FIELD_DECL node which represents a bit-field, the "offset" part | |
6774 | of this special location descriptor must indicate the distance | |
6775 | in bytes from the lowest-addressed byte of the containing struct | |
6776 | or union type to the lowest-addressed byte of the "containing | |
6777 | object" for the bit-field. (See the `field_byte_offset' function | |
6778 | above).. For any given bit-field, the "containing object" is a | |
6779 | hypothetical object (of some integral or enum type) within which | |
6780 | the given bit-field lives. The type of this hypothetical | |
6781 | "containing object" is always the same as the declared type of | |
6782 | the individual bit-field itself (for GCC anyway... the DWARF | |
6783 | spec doesn't actually mandate this). Note that it is the size | |
6784 | (in bytes) of the hypothetical "containing object" which will | |
6785 | be given in the DW_AT_byte_size attribute for this bit-field. | |
6786 | (See the `byte_size_attribute' function below.) It is also used | |
6787 | when calculating the value of the DW_AT_bit_offset attribute. | |
6788 | (See the `bit_offset_attribute' function below). */ | |
71dfc51f | 6789 | |
a3f97cbb JW |
6790 | static void |
6791 | add_data_member_location_attribute (die, decl) | |
6792 | register dw_die_ref die; | |
6793 | register tree decl; | |
6794 | { | |
61b32c02 | 6795 | register unsigned long offset; |
a3f97cbb JW |
6796 | register dw_loc_descr_ref loc_descr; |
6797 | register enum dwarf_location_atom op; | |
6798 | ||
61b32c02 JM |
6799 | if (TREE_CODE (decl) == TREE_VEC) |
6800 | offset = TREE_INT_CST_LOW (BINFO_OFFSET (decl)); | |
6801 | else | |
6802 | offset = field_byte_offset (decl); | |
6803 | ||
a3f97cbb JW |
6804 | /* The DWARF2 standard says that we should assume that the structure address |
6805 | is already on the stack, so we can specify a structure field address | |
6806 | by using DW_OP_plus_uconst. */ | |
71dfc51f | 6807 | |
a3f97cbb JW |
6808 | #ifdef MIPS_DEBUGGING_INFO |
6809 | /* ??? The SGI dwarf reader does not handle the DW_OP_plus_uconst operator | |
6810 | correctly. It works only if we leave the offset on the stack. */ | |
6811 | op = DW_OP_constu; | |
6812 | #else | |
6813 | op = DW_OP_plus_uconst; | |
6814 | #endif | |
71dfc51f | 6815 | |
a3f97cbb JW |
6816 | loc_descr = new_loc_descr (op, offset, 0); |
6817 | add_AT_loc (die, DW_AT_data_member_location, loc_descr); | |
6818 | } | |
6819 | ||
6820 | /* Attach an DW_AT_const_value attribute for a variable or a parameter which | |
6821 | does not have a "location" either in memory or in a register. These | |
6822 | things can arise in GNU C when a constant is passed as an actual parameter | |
6823 | to an inlined function. They can also arise in C++ where declared | |
6824 | constants do not necessarily get memory "homes". */ | |
71dfc51f | 6825 | |
a3f97cbb JW |
6826 | static void |
6827 | add_const_value_attribute (die, rtl) | |
6828 | register dw_die_ref die; | |
6829 | register rtx rtl; | |
6830 | { | |
6831 | switch (GET_CODE (rtl)) | |
6832 | { | |
6833 | case CONST_INT: | |
6834 | /* Note that a CONST_INT rtx could represent either an integer or a | |
6835 | floating-point constant. A CONST_INT is used whenever the constant | |
6836 | will fit into a single word. In all such cases, the original mode | |
6837 | of the constant value is wiped out, and the CONST_INT rtx is | |
6838 | assigned VOIDmode. */ | |
6839 | add_AT_unsigned (die, DW_AT_const_value, (unsigned) INTVAL (rtl)); | |
6840 | break; | |
6841 | ||
6842 | case CONST_DOUBLE: | |
6843 | /* Note that a CONST_DOUBLE rtx could represent either an integer or a | |
6844 | floating-point constant. A CONST_DOUBLE is used whenever the | |
6845 | constant requires more than one word in order to be adequately | |
469ac993 JM |
6846 | represented. We output CONST_DOUBLEs as blocks. */ |
6847 | { | |
6848 | register enum machine_mode mode = GET_MODE (rtl); | |
6849 | ||
6850 | if (GET_MODE_CLASS (mode) == MODE_FLOAT) | |
6851 | { | |
71dfc51f RK |
6852 | register unsigned length = GET_MODE_SIZE (mode) / sizeof (long); |
6853 | long array[4]; | |
6854 | REAL_VALUE_TYPE rv; | |
469ac993 | 6855 | |
71dfc51f | 6856 | REAL_VALUE_FROM_CONST_DOUBLE (rv, rtl); |
469ac993 JM |
6857 | switch (mode) |
6858 | { | |
6859 | case SFmode: | |
71dfc51f | 6860 | REAL_VALUE_TO_TARGET_SINGLE (rv, array[0]); |
469ac993 JM |
6861 | break; |
6862 | ||
6863 | case DFmode: | |
71dfc51f | 6864 | REAL_VALUE_TO_TARGET_DOUBLE (rv, array); |
469ac993 JM |
6865 | break; |
6866 | ||
6867 | case XFmode: | |
6868 | case TFmode: | |
71dfc51f | 6869 | REAL_VALUE_TO_TARGET_LONG_DOUBLE (rv, array); |
469ac993 JM |
6870 | break; |
6871 | ||
6872 | default: | |
6873 | abort (); | |
6874 | } | |
6875 | ||
469ac993 JM |
6876 | add_AT_float (die, DW_AT_const_value, length, array); |
6877 | } | |
6878 | else | |
6879 | add_AT_long_long (die, DW_AT_const_value, | |
6880 | CONST_DOUBLE_HIGH (rtl), CONST_DOUBLE_LOW (rtl)); | |
6881 | } | |
a3f97cbb JW |
6882 | break; |
6883 | ||
6884 | case CONST_STRING: | |
6885 | add_AT_string (die, DW_AT_const_value, XSTR (rtl, 0)); | |
6886 | break; | |
6887 | ||
6888 | case SYMBOL_REF: | |
6889 | case LABEL_REF: | |
6890 | case CONST: | |
6891 | add_AT_addr (die, DW_AT_const_value, addr_to_string (rtl)); | |
6892 | break; | |
6893 | ||
6894 | case PLUS: | |
6895 | /* In cases where an inlined instance of an inline function is passed | |
6896 | the address of an `auto' variable (which is local to the caller) we | |
6897 | can get a situation where the DECL_RTL of the artificial local | |
6898 | variable (for the inlining) which acts as a stand-in for the | |
6899 | corresponding formal parameter (of the inline function) will look | |
6900 | like (plus:SI (reg:SI FRAME_PTR) (const_int ...)). This is not | |
6901 | exactly a compile-time constant expression, but it isn't the address | |
6902 | of the (artificial) local variable either. Rather, it represents the | |
6903 | *value* which the artificial local variable always has during its | |
6904 | lifetime. We currently have no way to represent such quasi-constant | |
6a7a9f01 | 6905 | values in Dwarf, so for now we just punt and generate nothing. */ |
a3f97cbb JW |
6906 | break; |
6907 | ||
6908 | default: | |
6909 | /* No other kinds of rtx should be possible here. */ | |
6910 | abort (); | |
6911 | } | |
6912 | ||
6913 | } | |
6914 | ||
6915 | /* Generate *either* an DW_AT_location attribute or else an DW_AT_const_value | |
6916 | data attribute for a variable or a parameter. We generate the | |
6917 | DW_AT_const_value attribute only in those cases where the given variable | |
6918 | or parameter does not have a true "location" either in memory or in a | |
6919 | register. This can happen (for example) when a constant is passed as an | |
6920 | actual argument in a call to an inline function. (It's possible that | |
6921 | these things can crop up in other ways also.) Note that one type of | |
6922 | constant value which can be passed into an inlined function is a constant | |
6923 | pointer. This can happen for example if an actual argument in an inlined | |
6924 | function call evaluates to a compile-time constant address. */ | |
71dfc51f | 6925 | |
a3f97cbb JW |
6926 | static void |
6927 | add_location_or_const_value_attribute (die, decl) | |
6928 | register dw_die_ref die; | |
6929 | register tree decl; | |
6930 | { | |
6931 | register rtx rtl; | |
6932 | register tree declared_type; | |
6933 | register tree passed_type; | |
6934 | ||
6935 | if (TREE_CODE (decl) == ERROR_MARK) | |
71dfc51f RK |
6936 | return; |
6937 | ||
6938 | if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL) | |
6939 | abort (); | |
6940 | ||
a3f97cbb JW |
6941 | /* Here we have to decide where we are going to say the parameter "lives" |
6942 | (as far as the debugger is concerned). We only have a couple of | |
6943 | choices. GCC provides us with DECL_RTL and with DECL_INCOMING_RTL. | |
71dfc51f | 6944 | |
a3f97cbb | 6945 | DECL_RTL normally indicates where the parameter lives during most of the |
71dfc51f | 6946 | activation of the function. If optimization is enabled however, this |
a3f97cbb JW |
6947 | could be either NULL or else a pseudo-reg. Both of those cases indicate |
6948 | that the parameter doesn't really live anywhere (as far as the code | |
6949 | generation parts of GCC are concerned) during most of the function's | |
6950 | activation. That will happen (for example) if the parameter is never | |
71dfc51f RK |
6951 | referenced within the function. |
6952 | ||
6953 | We could just generate a location descriptor here for all non-NULL | |
6954 | non-pseudo values of DECL_RTL and ignore all of the rest, but we can be | |
6955 | a little nicer than that if we also consider DECL_INCOMING_RTL in cases | |
6956 | where DECL_RTL is NULL or is a pseudo-reg. | |
6957 | ||
6958 | Note however that we can only get away with using DECL_INCOMING_RTL as | |
6959 | a backup substitute for DECL_RTL in certain limited cases. In cases | |
6960 | where DECL_ARG_TYPE (decl) indicates the same type as TREE_TYPE (decl), | |
6961 | we can be sure that the parameter was passed using the same type as it is | |
6962 | declared to have within the function, and that its DECL_INCOMING_RTL | |
6963 | points us to a place where a value of that type is passed. | |
6964 | ||
6965 | In cases where DECL_ARG_TYPE (decl) and TREE_TYPE (decl) are different, | |
6966 | we cannot (in general) use DECL_INCOMING_RTL as a substitute for DECL_RTL | |
6967 | because in these cases DECL_INCOMING_RTL points us to a value of some | |
6968 | type which is *different* from the type of the parameter itself. Thus, | |
6969 | if we tried to use DECL_INCOMING_RTL to generate a location attribute in | |
6970 | such cases, the debugger would end up (for example) trying to fetch a | |
6971 | `float' from a place which actually contains the first part of a | |
6972 | `double'. That would lead to really incorrect and confusing | |
6973 | output at debug-time. | |
6974 | ||
6975 | So, in general, we *do not* use DECL_INCOMING_RTL as a backup for DECL_RTL | |
6976 | in cases where DECL_ARG_TYPE (decl) != TREE_TYPE (decl). There | |
6977 | are a couple of exceptions however. On little-endian machines we can | |
6978 | get away with using DECL_INCOMING_RTL even when DECL_ARG_TYPE (decl) is | |
6979 | not the same as TREE_TYPE (decl), but only when DECL_ARG_TYPE (decl) is | |
6980 | an integral type that is smaller than TREE_TYPE (decl). These cases arise | |
6981 | when (on a little-endian machine) a non-prototyped function has a | |
6982 | parameter declared to be of type `short' or `char'. In such cases, | |
6983 | TREE_TYPE (decl) will be `short' or `char', DECL_ARG_TYPE (decl) will | |
6984 | be `int', and DECL_INCOMING_RTL will point to the lowest-order byte of the | |
6985 | passed `int' value. If the debugger then uses that address to fetch | |
6986 | a `short' or a `char' (on a little-endian machine) the result will be | |
6987 | the correct data, so we allow for such exceptional cases below. | |
6988 | ||
6989 | Note that our goal here is to describe the place where the given formal | |
6990 | parameter lives during most of the function's activation (i.e. between | |
6991 | the end of the prologue and the start of the epilogue). We'll do that | |
6992 | as best as we can. Note however that if the given formal parameter is | |
6993 | modified sometime during the execution of the function, then a stack | |
6994 | backtrace (at debug-time) will show the function as having been | |
6995 | called with the *new* value rather than the value which was | |
6996 | originally passed in. This happens rarely enough that it is not | |
6997 | a major problem, but it *is* a problem, and I'd like to fix it. | |
6998 | ||
6999 | A future version of dwarf2out.c may generate two additional | |
7000 | attributes for any given DW_TAG_formal_parameter DIE which will | |
7001 | describe the "passed type" and the "passed location" for the | |
7002 | given formal parameter in addition to the attributes we now | |
7003 | generate to indicate the "declared type" and the "active | |
7004 | location" for each parameter. This additional set of attributes | |
7005 | could be used by debuggers for stack backtraces. Separately, note | |
7006 | that sometimes DECL_RTL can be NULL and DECL_INCOMING_RTL can be | |
7007 | NULL also. This happens (for example) for inlined-instances of | |
7008 | inline function formal parameters which are never referenced. | |
7009 | This really shouldn't be happening. All PARM_DECL nodes should | |
7010 | get valid non-NULL DECL_INCOMING_RTL values, but integrate.c | |
7011 | doesn't currently generate these values for inlined instances of | |
7012 | inline function parameters, so when we see such cases, we are | |
956d6950 | 7013 | just out-of-luck for the time being (until integrate.c |
a3f97cbb JW |
7014 | gets fixed). */ |
7015 | ||
7016 | /* Use DECL_RTL as the "location" unless we find something better. */ | |
7017 | rtl = DECL_RTL (decl); | |
7018 | ||
7019 | if (TREE_CODE (decl) == PARM_DECL) | |
7020 | { | |
7021 | if (rtl == NULL_RTX || is_pseudo_reg (rtl)) | |
7022 | { | |
7023 | declared_type = type_main_variant (TREE_TYPE (decl)); | |
7024 | passed_type = type_main_variant (DECL_ARG_TYPE (decl)); | |
a3f97cbb | 7025 | |
71dfc51f | 7026 | /* This decl represents a formal parameter which was optimized out. |
a3f97cbb JW |
7027 | Note that DECL_INCOMING_RTL may be NULL in here, but we handle |
7028 | all* cases where (rtl == NULL_RTX) just below. */ | |
7029 | if (declared_type == passed_type) | |
71dfc51f RK |
7030 | rtl = DECL_INCOMING_RTL (decl); |
7031 | else if (! BYTES_BIG_ENDIAN | |
7032 | && TREE_CODE (declared_type) == INTEGER_TYPE | |
555b6442 HPN |
7033 | && (GET_MODE_SIZE (TYPE_MODE (declared_type)) |
7034 | <= GET_MODE_SIZE (TYPE_MODE (passed_type)))) | |
71dfc51f | 7035 | rtl = DECL_INCOMING_RTL (decl); |
a3f97cbb | 7036 | } |
5a904a61 JW |
7037 | |
7038 | /* If the parm was passed in registers, but lives on the stack, then | |
7039 | make a big endian correction if the mode of the type of the | |
7040 | parameter is not the same as the mode of the rtl. */ | |
7041 | /* ??? This is the same series of checks that are made in dbxout.c before | |
7042 | we reach the big endian correction code there. It isn't clear if all | |
7043 | of these checks are necessary here, but keeping them all is the safe | |
7044 | thing to do. */ | |
7045 | else if (GET_CODE (rtl) == MEM | |
7046 | && XEXP (rtl, 0) != const0_rtx | |
7047 | && ! CONSTANT_P (XEXP (rtl, 0)) | |
7048 | /* Not passed in memory. */ | |
7049 | && GET_CODE (DECL_INCOMING_RTL (decl)) != MEM | |
7050 | /* Not passed by invisible reference. */ | |
7051 | && (GET_CODE (XEXP (rtl, 0)) != REG | |
7052 | || REGNO (XEXP (rtl, 0)) == HARD_FRAME_POINTER_REGNUM | |
7053 | || REGNO (XEXP (rtl, 0)) == STACK_POINTER_REGNUM | |
7054 | #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM | |
7055 | || REGNO (XEXP (rtl, 0)) == ARG_POINTER_REGNUM | |
7056 | #endif | |
7057 | ) | |
7058 | /* Big endian correction check. */ | |
7059 | && BYTES_BIG_ENDIAN | |
7060 | && TYPE_MODE (TREE_TYPE (decl)) != GET_MODE (rtl) | |
7061 | && (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (decl))) | |
7062 | < UNITS_PER_WORD)) | |
7063 | { | |
7064 | int offset = (UNITS_PER_WORD | |
7065 | - GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (decl)))); | |
7066 | rtl = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (decl)), | |
7067 | plus_constant (XEXP (rtl, 0), offset)); | |
7068 | } | |
a3f97cbb | 7069 | } |
71dfc51f | 7070 | |
61b32c02 JM |
7071 | if (rtl == NULL_RTX) |
7072 | return; | |
7073 | ||
1914f5da | 7074 | rtl = eliminate_regs (rtl, 0, NULL_RTX); |
6a7a9f01 | 7075 | #ifdef LEAF_REG_REMAP |
54ff41b7 | 7076 | if (current_function_uses_only_leaf_regs) |
5f52dcfe | 7077 | leaf_renumber_regs_insn (rtl); |
6a7a9f01 JM |
7078 | #endif |
7079 | ||
a3f97cbb JW |
7080 | switch (GET_CODE (rtl)) |
7081 | { | |
e9a25f70 JL |
7082 | case ADDRESSOF: |
7083 | /* The address of a variable that was optimized away; don't emit | |
7084 | anything. */ | |
7085 | break; | |
7086 | ||
a3f97cbb JW |
7087 | case CONST_INT: |
7088 | case CONST_DOUBLE: | |
7089 | case CONST_STRING: | |
7090 | case SYMBOL_REF: | |
7091 | case LABEL_REF: | |
7092 | case CONST: | |
7093 | case PLUS: | |
7094 | /* DECL_RTL could be (plus (reg ...) (const_int ...)) */ | |
7095 | add_const_value_attribute (die, rtl); | |
7096 | break; | |
7097 | ||
7098 | case MEM: | |
7099 | case REG: | |
7100 | case SUBREG: | |
4401bf24 | 7101 | case CONCAT: |
ef76d03b | 7102 | add_AT_location_description (die, DW_AT_location, rtl); |
a3f97cbb JW |
7103 | break; |
7104 | ||
7105 | default: | |
71dfc51f | 7106 | abort (); |
a3f97cbb JW |
7107 | } |
7108 | } | |
7109 | ||
7110 | /* Generate an DW_AT_name attribute given some string value to be included as | |
7111 | the value of the attribute. */ | |
71dfc51f RK |
7112 | |
7113 | static inline void | |
a3f97cbb JW |
7114 | add_name_attribute (die, name_string) |
7115 | register dw_die_ref die; | |
d560ee52 | 7116 | register const char *name_string; |
a3f97cbb | 7117 | { |
71dfc51f | 7118 | if (name_string != NULL && *name_string != 0) |
14a774a9 RK |
7119 | { |
7120 | if (demangle_name_func) | |
7121 | name_string = (*demangle_name_func) (name_string); | |
7122 | ||
7123 | add_AT_string (die, DW_AT_name, name_string); | |
7124 | } | |
a3f97cbb JW |
7125 | } |
7126 | ||
7127 | /* Given a tree node describing an array bound (either lower or upper) output | |
466446b0 | 7128 | a representation for that bound. */ |
71dfc51f | 7129 | |
a3f97cbb JW |
7130 | static void |
7131 | add_bound_info (subrange_die, bound_attr, bound) | |
7132 | register dw_die_ref subrange_die; | |
7133 | register enum dwarf_attribute bound_attr; | |
7134 | register tree bound; | |
7135 | { | |
a3f97cbb | 7136 | register unsigned bound_value = 0; |
ef76d03b JW |
7137 | |
7138 | /* If this is an Ada unconstrained array type, then don't emit any debug | |
7139 | info because the array bounds are unknown. They are parameterized when | |
7140 | the type is instantiated. */ | |
7141 | if (contains_placeholder_p (bound)) | |
7142 | return; | |
7143 | ||
a3f97cbb JW |
7144 | switch (TREE_CODE (bound)) |
7145 | { | |
7146 | case ERROR_MARK: | |
7147 | return; | |
7148 | ||
7149 | /* All fixed-bounds are represented by INTEGER_CST nodes. */ | |
7150 | case INTEGER_CST: | |
7151 | bound_value = TREE_INT_CST_LOW (bound); | |
141719a8 JM |
7152 | if (bound_attr == DW_AT_lower_bound |
7153 | && ((is_c_family () && bound_value == 0) | |
7154 | || (is_fortran () && bound_value == 1))) | |
7155 | /* use the default */; | |
7156 | else | |
7157 | add_AT_unsigned (subrange_die, bound_attr, bound_value); | |
a3f97cbb JW |
7158 | break; |
7159 | ||
b1ccbc24 | 7160 | case CONVERT_EXPR: |
a3f97cbb | 7161 | case NOP_EXPR: |
b1ccbc24 RK |
7162 | case NON_LVALUE_EXPR: |
7163 | add_bound_info (subrange_die, bound_attr, TREE_OPERAND (bound, 0)); | |
7164 | break; | |
7165 | ||
a3f97cbb JW |
7166 | case SAVE_EXPR: |
7167 | /* If optimization is turned on, the SAVE_EXPRs that describe how to | |
466446b0 JM |
7168 | access the upper bound values may be bogus. If they refer to a |
7169 | register, they may only describe how to get at these values at the | |
7170 | points in the generated code right after they have just been | |
7171 | computed. Worse yet, in the typical case, the upper bound values | |
7172 | will not even *be* computed in the optimized code (though the | |
7173 | number of elements will), so these SAVE_EXPRs are entirely | |
7174 | bogus. In order to compensate for this fact, we check here to see | |
7175 | if optimization is enabled, and if so, we don't add an attribute | |
7176 | for the (unknown and unknowable) upper bound. This should not | |
7177 | cause too much trouble for existing (stupid?) debuggers because | |
7178 | they have to deal with empty upper bounds location descriptions | |
7179 | anyway in order to be able to deal with incomplete array types. | |
7180 | Of course an intelligent debugger (GDB?) should be able to | |
7181 | comprehend that a missing upper bound specification in a array | |
7182 | type used for a storage class `auto' local array variable | |
7183 | indicates that the upper bound is both unknown (at compile- time) | |
7184 | and unknowable (at run-time) due to optimization. | |
7185 | ||
7186 | We assume that a MEM rtx is safe because gcc wouldn't put the | |
7187 | value there unless it was going to be used repeatedly in the | |
7188 | function, i.e. for cleanups. */ | |
7189 | if (! optimize || GET_CODE (SAVE_EXPR_RTL (bound)) == MEM) | |
a3f97cbb | 7190 | { |
466446b0 JM |
7191 | register dw_die_ref ctx = lookup_decl_die (current_function_decl); |
7192 | register dw_die_ref decl_die = new_die (DW_TAG_variable, ctx); | |
f5963e61 JL |
7193 | register rtx loc = SAVE_EXPR_RTL (bound); |
7194 | ||
7195 | /* If the RTL for the SAVE_EXPR is memory, handle the case where | |
7196 | it references an outer function's frame. */ | |
7197 | ||
7198 | if (GET_CODE (loc) == MEM) | |
7199 | { | |
7200 | rtx new_addr = fix_lexical_addr (XEXP (loc, 0), bound); | |
7201 | ||
7202 | if (XEXP (loc, 0) != new_addr) | |
c5c76735 | 7203 | loc = gen_rtx_MEM (GET_MODE (loc), new_addr); |
f5963e61 JL |
7204 | } |
7205 | ||
466446b0 JM |
7206 | add_AT_flag (decl_die, DW_AT_artificial, 1); |
7207 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
f5963e61 | 7208 | add_AT_location_description (decl_die, DW_AT_location, loc); |
466446b0 | 7209 | add_AT_die_ref (subrange_die, bound_attr, decl_die); |
a3f97cbb | 7210 | } |
71dfc51f RK |
7211 | |
7212 | /* Else leave out the attribute. */ | |
a3f97cbb | 7213 | break; |
3f76745e | 7214 | |
ef76d03b JW |
7215 | case MAX_EXPR: |
7216 | case VAR_DECL: | |
c85f7c16 | 7217 | case COMPONENT_REF: |
ef76d03b JW |
7218 | /* ??? These types of bounds can be created by the Ada front end, |
7219 | and it isn't clear how to emit debug info for them. */ | |
7220 | break; | |
7221 | ||
3f76745e JM |
7222 | default: |
7223 | abort (); | |
a3f97cbb JW |
7224 | } |
7225 | } | |
7226 | ||
7227 | /* Note that the block of subscript information for an array type also | |
7228 | includes information about the element type of type given array type. */ | |
71dfc51f | 7229 | |
a3f97cbb JW |
7230 | static void |
7231 | add_subscript_info (type_die, type) | |
7232 | register dw_die_ref type_die; | |
7233 | register tree type; | |
7234 | { | |
081f5e7e | 7235 | #ifndef MIPS_DEBUGGING_INFO |
a3f97cbb | 7236 | register unsigned dimension_number; |
081f5e7e | 7237 | #endif |
a3f97cbb JW |
7238 | register tree lower, upper; |
7239 | register dw_die_ref subrange_die; | |
7240 | ||
7241 | /* The GNU compilers represent multidimensional array types as sequences of | |
7242 | one dimensional array types whose element types are themselves array | |
7243 | types. Here we squish that down, so that each multidimensional array | |
7244 | type gets only one array_type DIE in the Dwarf debugging info. The draft | |
7245 | Dwarf specification say that we are allowed to do this kind of | |
7246 | compression in C (because there is no difference between an array or | |
7247 | arrays and a multidimensional array in C) but for other source languages | |
7248 | (e.g. Ada) we probably shouldn't do this. */ | |
71dfc51f | 7249 | |
a3f97cbb JW |
7250 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
7251 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
7252 | We work around this by disabling this feature. See also | |
7253 | gen_array_type_die. */ | |
7254 | #ifndef MIPS_DEBUGGING_INFO | |
7255 | for (dimension_number = 0; | |
7256 | TREE_CODE (type) == ARRAY_TYPE; | |
7257 | type = TREE_TYPE (type), dimension_number++) | |
7258 | { | |
7259 | #endif | |
7260 | register tree domain = TYPE_DOMAIN (type); | |
7261 | ||
7262 | /* Arrays come in three flavors: Unspecified bounds, fixed bounds, | |
7263 | and (in GNU C only) variable bounds. Handle all three forms | |
7264 | here. */ | |
7265 | subrange_die = new_die (DW_TAG_subrange_type, type_die); | |
7266 | if (domain) | |
7267 | { | |
7268 | /* We have an array type with specified bounds. */ | |
7269 | lower = TYPE_MIN_VALUE (domain); | |
7270 | upper = TYPE_MAX_VALUE (domain); | |
7271 | ||
a9d38797 JM |
7272 | /* define the index type. */ |
7273 | if (TREE_TYPE (domain)) | |
ef76d03b JW |
7274 | { |
7275 | /* ??? This is probably an Ada unnamed subrange type. Ignore the | |
7276 | TREE_TYPE field. We can't emit debug info for this | |
7277 | because it is an unnamed integral type. */ | |
7278 | if (TREE_CODE (domain) == INTEGER_TYPE | |
7279 | && TYPE_NAME (domain) == NULL_TREE | |
7280 | && TREE_CODE (TREE_TYPE (domain)) == INTEGER_TYPE | |
7281 | && TYPE_NAME (TREE_TYPE (domain)) == NULL_TREE) | |
7282 | ; | |
7283 | else | |
7284 | add_type_attribute (subrange_die, TREE_TYPE (domain), 0, 0, | |
7285 | type_die); | |
7286 | } | |
a9d38797 | 7287 | |
e1ee5cdc RH |
7288 | /* ??? If upper is NULL, the array has unspecified length, |
7289 | but it does have a lower bound. This happens with Fortran | |
7290 | dimension arr(N:*) | |
7291 | Since the debugger is definitely going to need to know N | |
7292 | to produce useful results, go ahead and output the lower | |
7293 | bound solo, and hope the debugger can cope. */ | |
7294 | ||
141719a8 | 7295 | add_bound_info (subrange_die, DW_AT_lower_bound, lower); |
e1ee5cdc RH |
7296 | if (upper) |
7297 | add_bound_info (subrange_die, DW_AT_upper_bound, upper); | |
a3f97cbb JW |
7298 | } |
7299 | else | |
71dfc51f | 7300 | /* We have an array type with an unspecified length. The DWARF-2 |
a9d38797 JM |
7301 | spec does not say how to handle this; let's just leave out the |
7302 | bounds. */ | |
2d8b0f3a JL |
7303 | {;} |
7304 | ||
71dfc51f | 7305 | |
a3f97cbb JW |
7306 | #ifndef MIPS_DEBUGGING_INFO |
7307 | } | |
7308 | #endif | |
7309 | } | |
7310 | ||
7311 | static void | |
7312 | add_byte_size_attribute (die, tree_node) | |
7313 | dw_die_ref die; | |
7314 | register tree tree_node; | |
7315 | { | |
7316 | register unsigned size; | |
7317 | ||
7318 | switch (TREE_CODE (tree_node)) | |
7319 | { | |
7320 | case ERROR_MARK: | |
7321 | size = 0; | |
7322 | break; | |
7323 | case ENUMERAL_TYPE: | |
7324 | case RECORD_TYPE: | |
7325 | case UNION_TYPE: | |
7326 | case QUAL_UNION_TYPE: | |
7327 | size = int_size_in_bytes (tree_node); | |
7328 | break; | |
7329 | case FIELD_DECL: | |
7330 | /* For a data member of a struct or union, the DW_AT_byte_size is | |
7331 | generally given as the number of bytes normally allocated for an | |
7332 | object of the *declared* type of the member itself. This is true | |
7333 | even for bit-fields. */ | |
7334 | size = simple_type_size_in_bits (field_type (tree_node)) / BITS_PER_UNIT; | |
7335 | break; | |
7336 | default: | |
7337 | abort (); | |
7338 | } | |
7339 | ||
7340 | /* Note that `size' might be -1 when we get to this point. If it is, that | |
7341 | indicates that the byte size of the entity in question is variable. We | |
7342 | have no good way of expressing this fact in Dwarf at the present time, | |
7343 | so just let the -1 pass on through. */ | |
7344 | ||
7345 | add_AT_unsigned (die, DW_AT_byte_size, size); | |
7346 | } | |
7347 | ||
7348 | /* For a FIELD_DECL node which represents a bit-field, output an attribute | |
7349 | which specifies the distance in bits from the highest order bit of the | |
7350 | "containing object" for the bit-field to the highest order bit of the | |
7351 | bit-field itself. | |
7352 | ||
b2932ae5 JM |
7353 | For any given bit-field, the "containing object" is a hypothetical |
7354 | object (of some integral or enum type) within which the given bit-field | |
7355 | lives. The type of this hypothetical "containing object" is always the | |
7356 | same as the declared type of the individual bit-field itself. The | |
7357 | determination of the exact location of the "containing object" for a | |
7358 | bit-field is rather complicated. It's handled by the | |
7359 | `field_byte_offset' function (above). | |
a3f97cbb JW |
7360 | |
7361 | Note that it is the size (in bytes) of the hypothetical "containing object" | |
7362 | which will be given in the DW_AT_byte_size attribute for this bit-field. | |
7363 | (See `byte_size_attribute' above). */ | |
71dfc51f RK |
7364 | |
7365 | static inline void | |
a3f97cbb JW |
7366 | add_bit_offset_attribute (die, decl) |
7367 | register dw_die_ref die; | |
7368 | register tree decl; | |
7369 | { | |
7370 | register unsigned object_offset_in_bytes = field_byte_offset (decl); | |
7371 | register tree type = DECL_BIT_FIELD_TYPE (decl); | |
7372 | register tree bitpos_tree = DECL_FIELD_BITPOS (decl); | |
7373 | register unsigned bitpos_int; | |
7374 | register unsigned highest_order_object_bit_offset; | |
7375 | register unsigned highest_order_field_bit_offset; | |
7376 | register unsigned bit_offset; | |
7377 | ||
3a88cbd1 JL |
7378 | /* Must be a field and a bit field. */ |
7379 | if (!type | |
7380 | || TREE_CODE (decl) != FIELD_DECL) | |
7381 | abort (); | |
a3f97cbb JW |
7382 | |
7383 | /* We can't yet handle bit-fields whose offsets are variable, so if we | |
7384 | encounter such things, just return without generating any attribute | |
7385 | whatsoever. */ | |
7386 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
71dfc51f RK |
7387 | return; |
7388 | ||
a3f97cbb JW |
7389 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); |
7390 | ||
7391 | /* Note that the bit offset is always the distance (in bits) from the | |
7392 | highest-order bit of the "containing object" to the highest-order bit of | |
7393 | the bit-field itself. Since the "high-order end" of any object or field | |
7394 | is different on big-endian and little-endian machines, the computation | |
7395 | below must take account of these differences. */ | |
7396 | highest_order_object_bit_offset = object_offset_in_bytes * BITS_PER_UNIT; | |
7397 | highest_order_field_bit_offset = bitpos_int; | |
7398 | ||
71dfc51f | 7399 | if (! BYTES_BIG_ENDIAN) |
a3f97cbb JW |
7400 | { |
7401 | highest_order_field_bit_offset | |
7402 | += (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl)); | |
7403 | ||
7404 | highest_order_object_bit_offset += simple_type_size_in_bits (type); | |
7405 | } | |
71dfc51f RK |
7406 | |
7407 | bit_offset | |
7408 | = (! BYTES_BIG_ENDIAN | |
7409 | ? highest_order_object_bit_offset - highest_order_field_bit_offset | |
7410 | : highest_order_field_bit_offset - highest_order_object_bit_offset); | |
a3f97cbb JW |
7411 | |
7412 | add_AT_unsigned (die, DW_AT_bit_offset, bit_offset); | |
7413 | } | |
7414 | ||
7415 | /* For a FIELD_DECL node which represents a bit field, output an attribute | |
7416 | which specifies the length in bits of the given field. */ | |
71dfc51f RK |
7417 | |
7418 | static inline void | |
a3f97cbb JW |
7419 | add_bit_size_attribute (die, decl) |
7420 | register dw_die_ref die; | |
7421 | register tree decl; | |
7422 | { | |
3a88cbd1 JL |
7423 | /* Must be a field and a bit field. */ |
7424 | if (TREE_CODE (decl) != FIELD_DECL | |
7425 | || ! DECL_BIT_FIELD_TYPE (decl)) | |
7426 | abort (); | |
a3f97cbb JW |
7427 | add_AT_unsigned (die, DW_AT_bit_size, |
7428 | (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl))); | |
7429 | } | |
7430 | ||
88dad228 | 7431 | /* If the compiled language is ANSI C, then add a 'prototyped' |
a3f97cbb | 7432 | attribute, if arg types are given for the parameters of a function. */ |
71dfc51f RK |
7433 | |
7434 | static inline void | |
a3f97cbb JW |
7435 | add_prototyped_attribute (die, func_type) |
7436 | register dw_die_ref die; | |
7437 | register tree func_type; | |
7438 | { | |
88dad228 JM |
7439 | if (get_AT_unsigned (comp_unit_die, DW_AT_language) == DW_LANG_C89 |
7440 | && TYPE_ARG_TYPES (func_type) != NULL) | |
7441 | add_AT_flag (die, DW_AT_prototyped, 1); | |
a3f97cbb JW |
7442 | } |
7443 | ||
7444 | ||
7445 | /* Add an 'abstract_origin' attribute below a given DIE. The DIE is found | |
7446 | by looking in either the type declaration or object declaration | |
7447 | equate table. */ | |
71dfc51f RK |
7448 | |
7449 | static inline void | |
a3f97cbb JW |
7450 | add_abstract_origin_attribute (die, origin) |
7451 | register dw_die_ref die; | |
7452 | register tree origin; | |
7453 | { | |
7454 | dw_die_ref origin_die = NULL; | |
bbc6ae08 | 7455 | |
a3f97cbb | 7456 | if (TREE_CODE_CLASS (TREE_CODE (origin)) == 'd') |
71dfc51f | 7457 | origin_die = lookup_decl_die (origin); |
a3f97cbb | 7458 | else if (TREE_CODE_CLASS (TREE_CODE (origin)) == 't') |
71dfc51f RK |
7459 | origin_die = lookup_type_die (origin); |
7460 | ||
bbc6ae08 NC |
7461 | if (origin_die == NULL) |
7462 | abort (); | |
7463 | ||
a3f97cbb JW |
7464 | add_AT_die_ref (die, DW_AT_abstract_origin, origin_die); |
7465 | } | |
7466 | ||
bdb669cb JM |
7467 | /* We do not currently support the pure_virtual attribute. */ |
7468 | ||
71dfc51f | 7469 | static inline void |
a3f97cbb JW |
7470 | add_pure_or_virtual_attribute (die, func_decl) |
7471 | register dw_die_ref die; | |
7472 | register tree func_decl; | |
7473 | { | |
a94dbf2c | 7474 | if (DECL_VINDEX (func_decl)) |
a3f97cbb | 7475 | { |
bdb669cb | 7476 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); |
71dfc51f RK |
7477 | add_AT_loc (die, DW_AT_vtable_elem_location, |
7478 | new_loc_descr (DW_OP_constu, | |
7479 | TREE_INT_CST_LOW (DECL_VINDEX (func_decl)), | |
7480 | 0)); | |
7481 | ||
a94dbf2c JM |
7482 | /* GNU extension: Record what type this method came from originally. */ |
7483 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
7484 | add_AT_die_ref (die, DW_AT_containing_type, | |
7485 | lookup_type_die (DECL_CONTEXT (func_decl))); | |
a3f97cbb JW |
7486 | } |
7487 | } | |
7488 | \f | |
b2932ae5 | 7489 | /* Add source coordinate attributes for the given decl. */ |
71dfc51f | 7490 | |
b2932ae5 JM |
7491 | static void |
7492 | add_src_coords_attributes (die, decl) | |
7493 | register dw_die_ref die; | |
7494 | register tree decl; | |
7495 | { | |
7496 | register unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 7497 | |
b2932ae5 JM |
7498 | add_AT_unsigned (die, DW_AT_decl_file, file_index); |
7499 | add_AT_unsigned (die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
7500 | } | |
7501 | ||
a3f97cbb JW |
7502 | /* Add an DW_AT_name attribute and source coordinate attribute for the |
7503 | given decl, but only if it actually has a name. */ | |
71dfc51f | 7504 | |
a3f97cbb JW |
7505 | static void |
7506 | add_name_and_src_coords_attributes (die, decl) | |
7507 | register dw_die_ref die; | |
7508 | register tree decl; | |
7509 | { | |
61b32c02 | 7510 | register tree decl_name; |
71dfc51f | 7511 | |
a1d7ffe3 | 7512 | decl_name = DECL_NAME (decl); |
71dfc51f | 7513 | if (decl_name != NULL && IDENTIFIER_POINTER (decl_name) != NULL) |
a3f97cbb | 7514 | { |
a1d7ffe3 | 7515 | add_name_attribute (die, dwarf2_name (decl, 0)); |
a96c67ec JM |
7516 | if (! DECL_ARTIFICIAL (decl)) |
7517 | add_src_coords_attributes (die, decl); | |
e689ae67 | 7518 | |
a1d7ffe3 JM |
7519 | if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL) |
7520 | && DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl)) | |
7521 | add_AT_string (die, DW_AT_MIPS_linkage_name, | |
7522 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
a3f97cbb JW |
7523 | } |
7524 | } | |
7525 | ||
7526 | /* Push a new declaration scope. */ | |
71dfc51f | 7527 | |
a3f97cbb JW |
7528 | static void |
7529 | push_decl_scope (scope) | |
7530 | tree scope; | |
7531 | { | |
7532 | /* Make room in the decl_scope_table, if necessary. */ | |
7533 | if (decl_scope_table_allocated == decl_scope_depth) | |
7534 | { | |
7535 | decl_scope_table_allocated += DECL_SCOPE_TABLE_INCREMENT; | |
71dfc51f | 7536 | decl_scope_table |
e3e7774e JW |
7537 | = (decl_scope_node *) xrealloc (decl_scope_table, |
7538 | (decl_scope_table_allocated | |
7539 | * sizeof (decl_scope_node))); | |
a3f97cbb | 7540 | } |
71dfc51f | 7541 | |
e3e7774e JW |
7542 | decl_scope_table[decl_scope_depth].scope = scope; |
7543 | ||
a96c67ec JM |
7544 | /* If we're starting to emit a global class while we're in the middle |
7545 | of emitting a function, we need to find the proper .previous. */ | |
e3e7774e | 7546 | |
5f2f160c | 7547 | if (AGGREGATE_TYPE_P (scope)) |
e3e7774e | 7548 | { |
a96c67ec JM |
7549 | tree containing_scope = TYPE_CONTEXT (scope); |
7550 | int i; | |
7551 | ||
348bb3c7 | 7552 | for (i = decl_scope_depth - 1; i >= 0; --i) |
e3e7774e JW |
7553 | if (decl_scope_table[i].scope == containing_scope) |
7554 | break; | |
7555 | ||
348bb3c7 | 7556 | decl_scope_table[decl_scope_depth].previous = i; |
e3e7774e | 7557 | } |
a96c67ec JM |
7558 | else |
7559 | decl_scope_table[decl_scope_depth].previous = decl_scope_depth - 1; | |
e3e7774e JW |
7560 | |
7561 | decl_scope_depth++; | |
a3f97cbb JW |
7562 | } |
7563 | ||
2addbe1d | 7564 | /* Return the DIE for the scope that immediately contains this declaration. */ |
71dfc51f | 7565 | |
a3f97cbb | 7566 | static dw_die_ref |
ab72d377 JM |
7567 | scope_die_for (t, context_die) |
7568 | register tree t; | |
a3f97cbb JW |
7569 | register dw_die_ref context_die; |
7570 | { | |
7571 | register dw_die_ref scope_die = NULL; | |
7572 | register tree containing_scope; | |
e3e7774e | 7573 | register int i; |
a3f97cbb JW |
7574 | |
7575 | /* Walk back up the declaration tree looking for a place to define | |
7576 | this type. */ | |
ab72d377 JM |
7577 | if (TREE_CODE_CLASS (TREE_CODE (t)) == 't') |
7578 | containing_scope = TYPE_CONTEXT (t); | |
a94dbf2c | 7579 | else if (TREE_CODE (t) == FUNCTION_DECL && DECL_VINDEX (t)) |
ab72d377 JM |
7580 | containing_scope = decl_class_context (t); |
7581 | else | |
7582 | containing_scope = DECL_CONTEXT (t); | |
7583 | ||
2addbe1d JM |
7584 | /* Ignore namespaces for the moment. */ |
7585 | if (containing_scope && TREE_CODE (containing_scope) == NAMESPACE_DECL) | |
7586 | containing_scope = NULL_TREE; | |
7587 | ||
5f2f160c JM |
7588 | /* Ignore function type "scopes" from the C frontend. They mean that |
7589 | a tagged type is local to a parmlist of a function declarator, but | |
7590 | that isn't useful to DWARF. */ | |
7591 | if (containing_scope && TREE_CODE (containing_scope) == FUNCTION_TYPE) | |
7592 | containing_scope = NULL_TREE; | |
7593 | ||
ef76d03b JW |
7594 | /* Function-local tags and functions get stuck in limbo until they are |
7595 | fixed up by decls_for_scope. */ | |
7596 | if (context_die == NULL && containing_scope != NULL_TREE | |
7597 | && (TREE_CODE (t) == FUNCTION_DECL || is_tagged_type (t))) | |
7598 | return NULL; | |
7599 | ||
71dfc51f RK |
7600 | if (containing_scope == NULL_TREE) |
7601 | scope_die = comp_unit_die; | |
348bb3c7 JM |
7602 | else if (TYPE_P (containing_scope) || DECL_P (containing_scope)) |
7603 | { | |
7604 | /* For types and decls, we can just look up the appropriate DIE. But | |
7605 | first we check to see if we're in the middle of emitting it so we | |
7606 | know where the new DIE should go. */ | |
7607 | ||
7608 | for (i = decl_scope_depth - 1; i >= 0; --i) | |
7609 | if (decl_scope_table[i].scope == containing_scope) | |
7610 | break; | |
7611 | ||
7612 | if (i < 0) | |
7613 | { | |
7614 | /* Function-local tags and functions get stuck in limbo | |
7615 | until they are fixed up by decls_for_scope. */ | |
7616 | if (TREE_CODE (containing_scope) == FUNCTION_DECL | |
7617 | && (TREE_CODE (t) == FUNCTION_DECL || is_tagged_type (t))) | |
7618 | return NULL; | |
7619 | ||
7620 | if (! TYPE_P (containing_scope)) | |
7621 | abort (); | |
7622 | if (debug_info_level > DINFO_LEVEL_TERSE | |
7623 | && !TREE_ASM_WRITTEN (containing_scope)) | |
7624 | abort (); | |
7625 | ||
7626 | /* If none of the current dies are suitable, we get file scope. */ | |
7627 | scope_die = comp_unit_die; | |
7628 | } | |
7629 | else | |
7630 | { | |
7631 | if (TYPE_P (containing_scope)) | |
7632 | scope_die = lookup_type_die (containing_scope); | |
7633 | else | |
7634 | scope_die = lookup_decl_die (containing_scope); | |
7635 | } | |
7636 | } | |
a3f97cbb JW |
7637 | else |
7638 | { | |
348bb3c7 JM |
7639 | /* Something that we can't just look up the DIE for, such as a |
7640 | BLOCK. */ | |
7641 | ||
e3e7774e JW |
7642 | for (i = decl_scope_depth - 1, scope_die = context_die; |
7643 | i >= 0 && decl_scope_table[i].scope != containing_scope; | |
7644 | (scope_die = scope_die->die_parent, | |
7645 | i = decl_scope_table[i].previous)) | |
71dfc51f RK |
7646 | ; |
7647 | ||
0c84c618 JW |
7648 | /* ??? Integrate_decl_tree does not handle BLOCK_TYPE_TAGS, nor |
7649 | does it try to handle types defined by TYPE_DECLs. Such types | |
7650 | thus have an incorrect TYPE_CONTEXT, which points to the block | |
7651 | they were originally defined in, instead of the current block | |
7652 | created by function inlining. We try to detect that here and | |
7653 | work around it. */ | |
7654 | ||
7655 | if (i < 0 && scope_die == comp_unit_die | |
7656 | && TREE_CODE (containing_scope) == BLOCK | |
7657 | && is_tagged_type (t) | |
7658 | && (block_ultimate_origin (decl_scope_table[decl_scope_depth - 1].scope) | |
7659 | == containing_scope)) | |
7660 | { | |
7661 | scope_die = context_die; | |
7662 | /* Since the checks below are no longer applicable. */ | |
7663 | i = 0; | |
7664 | } | |
7665 | ||
e3e7774e | 7666 | if (i < 0) |
348bb3c7 | 7667 | abort (); |
a3f97cbb | 7668 | } |
71dfc51f | 7669 | |
a3f97cbb JW |
7670 | return scope_die; |
7671 | } | |
7672 | ||
7673 | /* Pop a declaration scope. */ | |
71dfc51f | 7674 | static inline void |
a3f97cbb JW |
7675 | pop_decl_scope () |
7676 | { | |
3a88cbd1 JL |
7677 | if (decl_scope_depth <= 0) |
7678 | abort (); | |
a3f97cbb JW |
7679 | --decl_scope_depth; |
7680 | } | |
7681 | ||
7682 | /* Many forms of DIEs require a "type description" attribute. This | |
7683 | routine locates the proper "type descriptor" die for the type given | |
7684 | by 'type', and adds an DW_AT_type attribute below the given die. */ | |
71dfc51f | 7685 | |
a3f97cbb JW |
7686 | static void |
7687 | add_type_attribute (object_die, type, decl_const, decl_volatile, context_die) | |
7688 | register dw_die_ref object_die; | |
7689 | register tree type; | |
7690 | register int decl_const; | |
7691 | register int decl_volatile; | |
7692 | register dw_die_ref context_die; | |
7693 | { | |
7694 | register enum tree_code code = TREE_CODE (type); | |
a3f97cbb JW |
7695 | register dw_die_ref type_die = NULL; |
7696 | ||
ef76d03b JW |
7697 | /* ??? If this type is an unnamed subrange type of an integral or |
7698 | floating-point type, use the inner type. This is because we have no | |
7699 | support for unnamed types in base_type_die. This can happen if this is | |
7700 | an Ada subrange type. Correct solution is emit a subrange type die. */ | |
b1ccbc24 RK |
7701 | if ((code == INTEGER_TYPE || code == REAL_TYPE) |
7702 | && TREE_TYPE (type) != 0 && TYPE_NAME (type) == 0) | |
7703 | type = TREE_TYPE (type), code = TREE_CODE (type); | |
7704 | ||
a3f97cbb | 7705 | if (code == ERROR_MARK) |
b1ccbc24 | 7706 | return; |
a3f97cbb JW |
7707 | |
7708 | /* Handle a special case. For functions whose return type is void, we | |
7709 | generate *no* type attribute. (Note that no object may have type | |
7710 | `void', so this only applies to function return types). */ | |
7711 | if (code == VOID_TYPE) | |
b1ccbc24 | 7712 | return; |
a3f97cbb | 7713 | |
a3f97cbb JW |
7714 | type_die = modified_type_die (type, |
7715 | decl_const || TYPE_READONLY (type), | |
7716 | decl_volatile || TYPE_VOLATILE (type), | |
ab72d377 | 7717 | context_die); |
a3f97cbb | 7718 | if (type_die != NULL) |
71dfc51f | 7719 | add_AT_die_ref (object_die, DW_AT_type, type_die); |
a3f97cbb JW |
7720 | } |
7721 | ||
7722 | /* Given a tree pointer to a struct, class, union, or enum type node, return | |
7723 | a pointer to the (string) tag name for the given type, or zero if the type | |
7724 | was declared without a tag. */ | |
71dfc51f | 7725 | |
a3f97cbb JW |
7726 | static char * |
7727 | type_tag (type) | |
7728 | register tree type; | |
7729 | { | |
7730 | register char *name = 0; | |
7731 | ||
7732 | if (TYPE_NAME (type) != 0) | |
7733 | { | |
7734 | register tree t = 0; | |
7735 | ||
7736 | /* Find the IDENTIFIER_NODE for the type name. */ | |
7737 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
7738 | t = TYPE_NAME (type); | |
bdb669cb | 7739 | |
a3f97cbb JW |
7740 | /* The g++ front end makes the TYPE_NAME of *each* tagged type point to |
7741 | a TYPE_DECL node, regardless of whether or not a `typedef' was | |
bdb669cb | 7742 | involved. */ |
a94dbf2c JM |
7743 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
7744 | && ! DECL_IGNORED_P (TYPE_NAME (type))) | |
a3f97cbb | 7745 | t = DECL_NAME (TYPE_NAME (type)); |
bdb669cb | 7746 | |
a3f97cbb JW |
7747 | /* Now get the name as a string, or invent one. */ |
7748 | if (t != 0) | |
a94dbf2c | 7749 | name = IDENTIFIER_POINTER (t); |
a3f97cbb | 7750 | } |
71dfc51f | 7751 | |
a3f97cbb JW |
7752 | return (name == 0 || *name == '\0') ? 0 : name; |
7753 | } | |
7754 | ||
7755 | /* Return the type associated with a data member, make a special check | |
7756 | for bit field types. */ | |
71dfc51f RK |
7757 | |
7758 | static inline tree | |
a3f97cbb JW |
7759 | member_declared_type (member) |
7760 | register tree member; | |
7761 | { | |
71dfc51f RK |
7762 | return (DECL_BIT_FIELD_TYPE (member) |
7763 | ? DECL_BIT_FIELD_TYPE (member) | |
7764 | : TREE_TYPE (member)); | |
a3f97cbb JW |
7765 | } |
7766 | ||
d291dd49 | 7767 | /* Get the decl's label, as described by its RTL. This may be different |
a3f97cbb | 7768 | from the DECL_NAME name used in the source file. */ |
71dfc51f | 7769 | |
487a6e06 | 7770 | #if 0 |
a3f97cbb | 7771 | static char * |
d291dd49 | 7772 | decl_start_label (decl) |
a3f97cbb JW |
7773 | register tree decl; |
7774 | { | |
7775 | rtx x; | |
7776 | char *fnname; | |
7777 | x = DECL_RTL (decl); | |
7778 | if (GET_CODE (x) != MEM) | |
71dfc51f RK |
7779 | abort (); |
7780 | ||
a3f97cbb JW |
7781 | x = XEXP (x, 0); |
7782 | if (GET_CODE (x) != SYMBOL_REF) | |
71dfc51f RK |
7783 | abort (); |
7784 | ||
a3f97cbb JW |
7785 | fnname = XSTR (x, 0); |
7786 | return fnname; | |
7787 | } | |
487a6e06 | 7788 | #endif |
a3f97cbb | 7789 | \f |
956d6950 | 7790 | /* These routines generate the internal representation of the DIE's for |
a3f97cbb | 7791 | the compilation unit. Debugging information is collected by walking |
88dad228 | 7792 | the declaration trees passed in from dwarf2out_decl(). */ |
a3f97cbb JW |
7793 | |
7794 | static void | |
7795 | gen_array_type_die (type, context_die) | |
7796 | register tree type; | |
7797 | register dw_die_ref context_die; | |
7798 | { | |
ab72d377 | 7799 | register dw_die_ref scope_die = scope_die_for (type, context_die); |
a9d38797 | 7800 | register dw_die_ref array_die; |
a3f97cbb | 7801 | register tree element_type; |
bdb669cb | 7802 | |
a9d38797 JM |
7803 | /* ??? The SGI dwarf reader fails for array of array of enum types unless |
7804 | the inner array type comes before the outer array type. Thus we must | |
7805 | call gen_type_die before we call new_die. See below also. */ | |
7806 | #ifdef MIPS_DEBUGGING_INFO | |
7807 | gen_type_die (TREE_TYPE (type), context_die); | |
7808 | #endif | |
7809 | ||
7810 | array_die = new_die (DW_TAG_array_type, scope_die); | |
7811 | ||
a3f97cbb JW |
7812 | #if 0 |
7813 | /* We default the array ordering. SDB will probably do | |
7814 | the right things even if DW_AT_ordering is not present. It's not even | |
7815 | an issue until we start to get into multidimensional arrays anyway. If | |
7816 | SDB is ever caught doing the Wrong Thing for multi-dimensional arrays, | |
7817 | then we'll have to put the DW_AT_ordering attribute back in. (But if | |
7818 | and when we find out that we need to put these in, we will only do so | |
7819 | for multidimensional arrays. */ | |
7820 | add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_row_major); | |
7821 | #endif | |
7822 | ||
a9d38797 | 7823 | #ifdef MIPS_DEBUGGING_INFO |
4edb7b60 JM |
7824 | /* The SGI compilers handle arrays of unknown bound by setting |
7825 | AT_declaration and not emitting any subrange DIEs. */ | |
a9d38797 JM |
7826 | if (! TYPE_DOMAIN (type)) |
7827 | add_AT_unsigned (array_die, DW_AT_declaration, 1); | |
7828 | else | |
7829 | #endif | |
7830 | add_subscript_info (array_die, type); | |
a3f97cbb | 7831 | |
14a774a9 | 7832 | add_name_attribute (array_die, type_tag (type)); |
a3f97cbb JW |
7833 | equate_type_number_to_die (type, array_die); |
7834 | ||
7835 | /* Add representation of the type of the elements of this array type. */ | |
7836 | element_type = TREE_TYPE (type); | |
71dfc51f | 7837 | |
a3f97cbb JW |
7838 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
7839 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
7840 | We work around this by disabling this feature. See also | |
7841 | add_subscript_info. */ | |
7842 | #ifndef MIPS_DEBUGGING_INFO | |
71dfc51f RK |
7843 | while (TREE_CODE (element_type) == ARRAY_TYPE) |
7844 | element_type = TREE_TYPE (element_type); | |
7845 | ||
a3f97cbb | 7846 | gen_type_die (element_type, context_die); |
a9d38797 | 7847 | #endif |
a3f97cbb JW |
7848 | |
7849 | add_type_attribute (array_die, element_type, 0, 0, context_die); | |
7850 | } | |
7851 | ||
7852 | static void | |
7853 | gen_set_type_die (type, context_die) | |
7854 | register tree type; | |
7855 | register dw_die_ref context_die; | |
7856 | { | |
71dfc51f RK |
7857 | register dw_die_ref type_die |
7858 | = new_die (DW_TAG_set_type, scope_die_for (type, context_die)); | |
7859 | ||
a3f97cbb | 7860 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
7861 | add_type_attribute (type_die, TREE_TYPE (type), 0, 0, context_die); |
7862 | } | |
7863 | ||
d6f4ec51 | 7864 | #if 0 |
a3f97cbb JW |
7865 | static void |
7866 | gen_entry_point_die (decl, context_die) | |
7867 | register tree decl; | |
7868 | register dw_die_ref context_die; | |
7869 | { | |
7870 | register tree origin = decl_ultimate_origin (decl); | |
7871 | register dw_die_ref decl_die = new_die (DW_TAG_entry_point, context_die); | |
7872 | if (origin != NULL) | |
71dfc51f | 7873 | add_abstract_origin_attribute (decl_die, origin); |
a3f97cbb JW |
7874 | else |
7875 | { | |
7876 | add_name_and_src_coords_attributes (decl_die, decl); | |
a3f97cbb JW |
7877 | add_type_attribute (decl_die, TREE_TYPE (TREE_TYPE (decl)), |
7878 | 0, 0, context_die); | |
7879 | } | |
71dfc51f | 7880 | |
a3f97cbb | 7881 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 7882 | equate_decl_number_to_die (decl, decl_die); |
a3f97cbb | 7883 | else |
71dfc51f | 7884 | add_AT_lbl_id (decl_die, DW_AT_low_pc, decl_start_label (decl)); |
a3f97cbb | 7885 | } |
d6f4ec51 | 7886 | #endif |
a3f97cbb | 7887 | |
a94dbf2c JM |
7888 | /* Remember a type in the pending_types_list. */ |
7889 | ||
7890 | static void | |
7891 | pend_type (type) | |
7892 | register tree type; | |
7893 | { | |
7894 | if (pending_types == pending_types_allocated) | |
7895 | { | |
7896 | pending_types_allocated += PENDING_TYPES_INCREMENT; | |
7897 | pending_types_list | |
7898 | = (tree *) xrealloc (pending_types_list, | |
7899 | sizeof (tree) * pending_types_allocated); | |
7900 | } | |
71dfc51f | 7901 | |
a94dbf2c JM |
7902 | pending_types_list[pending_types++] = type; |
7903 | } | |
7904 | ||
7905 | /* Output any pending types (from the pending_types list) which we can output | |
7906 | now (taking into account the scope that we are working on now). | |
7907 | ||
7908 | For each type output, remove the given type from the pending_types_list | |
7909 | *before* we try to output it. */ | |
7910 | ||
7911 | static void | |
7912 | output_pending_types_for_scope (context_die) | |
7913 | register dw_die_ref context_die; | |
7914 | { | |
7915 | register tree type; | |
7916 | ||
7917 | while (pending_types) | |
7918 | { | |
7919 | --pending_types; | |
7920 | type = pending_types_list[pending_types]; | |
7921 | gen_type_die (type, context_die); | |
3a88cbd1 JL |
7922 | if (!TREE_ASM_WRITTEN (type)) |
7923 | abort (); | |
a94dbf2c JM |
7924 | } |
7925 | } | |
7926 | ||
8a8c3656 JM |
7927 | /* Remember a type in the incomplete_types_list. */ |
7928 | ||
7929 | static void | |
7930 | add_incomplete_type (type) | |
7931 | tree type; | |
7932 | { | |
7933 | if (incomplete_types == incomplete_types_allocated) | |
7934 | { | |
7935 | incomplete_types_allocated += INCOMPLETE_TYPES_INCREMENT; | |
7936 | incomplete_types_list | |
7937 | = (tree *) xrealloc (incomplete_types_list, | |
7938 | sizeof (tree) * incomplete_types_allocated); | |
7939 | } | |
7940 | ||
7941 | incomplete_types_list[incomplete_types++] = type; | |
7942 | } | |
7943 | ||
7944 | /* Walk through the list of incomplete types again, trying once more to | |
7945 | emit full debugging info for them. */ | |
7946 | ||
7947 | static void | |
7948 | retry_incomplete_types () | |
7949 | { | |
7950 | register tree type; | |
7951 | ||
7952 | while (incomplete_types) | |
7953 | { | |
7954 | --incomplete_types; | |
7955 | type = incomplete_types_list[incomplete_types]; | |
7956 | gen_type_die (type, comp_unit_die); | |
7957 | } | |
7958 | } | |
7959 | ||
a3f97cbb | 7960 | /* Generate a DIE to represent an inlined instance of an enumeration type. */ |
71dfc51f | 7961 | |
a3f97cbb JW |
7962 | static void |
7963 | gen_inlined_enumeration_type_die (type, context_die) | |
7964 | register tree type; | |
7965 | register dw_die_ref context_die; | |
7966 | { | |
71dfc51f RK |
7967 | register dw_die_ref type_die = new_die (DW_TAG_enumeration_type, |
7968 | scope_die_for (type, context_die)); | |
bbc6ae08 NC |
7969 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
7970 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
7971 | add_abstract_origin_attribute (type_die, type); |
7972 | } | |
7973 | ||
7974 | /* Generate a DIE to represent an inlined instance of a structure type. */ | |
71dfc51f | 7975 | |
a3f97cbb JW |
7976 | static void |
7977 | gen_inlined_structure_type_die (type, context_die) | |
7978 | register tree type; | |
7979 | register dw_die_ref context_die; | |
7980 | { | |
71dfc51f RK |
7981 | register dw_die_ref type_die = new_die (DW_TAG_structure_type, |
7982 | scope_die_for (type, context_die)); | |
bbc6ae08 NC |
7983 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
7984 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
7985 | add_abstract_origin_attribute (type_die, type); |
7986 | } | |
7987 | ||
7988 | /* Generate a DIE to represent an inlined instance of a union type. */ | |
71dfc51f | 7989 | |
a3f97cbb JW |
7990 | static void |
7991 | gen_inlined_union_type_die (type, context_die) | |
7992 | register tree type; | |
7993 | register dw_die_ref context_die; | |
7994 | { | |
71dfc51f RK |
7995 | register dw_die_ref type_die = new_die (DW_TAG_union_type, |
7996 | scope_die_for (type, context_die)); | |
bbc6ae08 NC |
7997 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
7998 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
7999 | add_abstract_origin_attribute (type_die, type); |
8000 | } | |
8001 | ||
8002 | /* Generate a DIE to represent an enumeration type. Note that these DIEs | |
8003 | include all of the information about the enumeration values also. Each | |
273dbe67 JM |
8004 | enumerated type name/value is listed as a child of the enumerated type |
8005 | DIE. */ | |
71dfc51f | 8006 | |
a3f97cbb | 8007 | static void |
273dbe67 | 8008 | gen_enumeration_type_die (type, context_die) |
a3f97cbb | 8009 | register tree type; |
a3f97cbb JW |
8010 | register dw_die_ref context_die; |
8011 | { | |
273dbe67 JM |
8012 | register dw_die_ref type_die = lookup_type_die (type); |
8013 | ||
a3f97cbb JW |
8014 | if (type_die == NULL) |
8015 | { | |
8016 | type_die = new_die (DW_TAG_enumeration_type, | |
ab72d377 | 8017 | scope_die_for (type, context_die)); |
a3f97cbb JW |
8018 | equate_type_number_to_die (type, type_die); |
8019 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 8020 | } |
273dbe67 JM |
8021 | else if (! TYPE_SIZE (type)) |
8022 | return; | |
8023 | else | |
8024 | remove_AT (type_die, DW_AT_declaration); | |
8025 | ||
8026 | /* Handle a GNU C/C++ extension, i.e. incomplete enum types. If the | |
8027 | given enum type is incomplete, do not generate the DW_AT_byte_size | |
8028 | attribute or the DW_AT_element_list attribute. */ | |
8029 | if (TYPE_SIZE (type)) | |
a3f97cbb | 8030 | { |
273dbe67 | 8031 | register tree link; |
71dfc51f | 8032 | |
a082c85a | 8033 | TREE_ASM_WRITTEN (type) = 1; |
273dbe67 | 8034 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 8035 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 8036 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 8037 | |
ef76d03b JW |
8038 | /* If the first reference to this type was as the return type of an |
8039 | inline function, then it may not have a parent. Fix this now. */ | |
8040 | if (type_die->die_parent == NULL) | |
8041 | add_child_die (scope_die_for (type, context_die), type_die); | |
8042 | ||
273dbe67 JM |
8043 | for (link = TYPE_FIELDS (type); |
8044 | link != NULL; link = TREE_CHAIN (link)) | |
a3f97cbb | 8045 | { |
273dbe67 | 8046 | register dw_die_ref enum_die = new_die (DW_TAG_enumerator, type_die); |
71dfc51f | 8047 | |
273dbe67 JM |
8048 | add_name_attribute (enum_die, |
8049 | IDENTIFIER_POINTER (TREE_PURPOSE (link))); | |
8050 | add_AT_unsigned (enum_die, DW_AT_const_value, | |
a3f97cbb | 8051 | (unsigned) TREE_INT_CST_LOW (TREE_VALUE (link))); |
a3f97cbb JW |
8052 | } |
8053 | } | |
273dbe67 JM |
8054 | else |
8055 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
8056 | } |
8057 | ||
8058 | ||
8059 | /* Generate a DIE to represent either a real live formal parameter decl or to | |
8060 | represent just the type of some formal parameter position in some function | |
8061 | type. | |
71dfc51f | 8062 | |
a3f97cbb JW |
8063 | Note that this routine is a bit unusual because its argument may be a |
8064 | ..._DECL node (i.e. either a PARM_DECL or perhaps a VAR_DECL which | |
8065 | represents an inlining of some PARM_DECL) or else some sort of a ..._TYPE | |
8066 | node. If it's the former then this function is being called to output a | |
8067 | DIE to represent a formal parameter object (or some inlining thereof). If | |
8068 | it's the latter, then this function is only being called to output a | |
8069 | DW_TAG_formal_parameter DIE to stand as a placeholder for some formal | |
8070 | argument type of some subprogram type. */ | |
71dfc51f | 8071 | |
a94dbf2c | 8072 | static dw_die_ref |
a3f97cbb JW |
8073 | gen_formal_parameter_die (node, context_die) |
8074 | register tree node; | |
8075 | register dw_die_ref context_die; | |
8076 | { | |
71dfc51f RK |
8077 | register dw_die_ref parm_die |
8078 | = new_die (DW_TAG_formal_parameter, context_die); | |
a3f97cbb | 8079 | register tree origin; |
71dfc51f | 8080 | |
a3f97cbb JW |
8081 | switch (TREE_CODE_CLASS (TREE_CODE (node))) |
8082 | { | |
a3f97cbb JW |
8083 | case 'd': |
8084 | origin = decl_ultimate_origin (node); | |
8085 | if (origin != NULL) | |
a94dbf2c | 8086 | add_abstract_origin_attribute (parm_die, origin); |
a3f97cbb JW |
8087 | else |
8088 | { | |
8089 | add_name_and_src_coords_attributes (parm_die, node); | |
8090 | add_type_attribute (parm_die, TREE_TYPE (node), | |
8091 | TREE_READONLY (node), | |
8092 | TREE_THIS_VOLATILE (node), | |
8093 | context_die); | |
bdb669cb JM |
8094 | if (DECL_ARTIFICIAL (node)) |
8095 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb | 8096 | } |
71dfc51f | 8097 | |
141719a8 JM |
8098 | equate_decl_number_to_die (node, parm_die); |
8099 | if (! DECL_ABSTRACT (node)) | |
a94dbf2c | 8100 | add_location_or_const_value_attribute (parm_die, node); |
71dfc51f | 8101 | |
a3f97cbb JW |
8102 | break; |
8103 | ||
a3f97cbb | 8104 | case 't': |
71dfc51f | 8105 | /* We were called with some kind of a ..._TYPE node. */ |
a3f97cbb JW |
8106 | add_type_attribute (parm_die, node, 0, 0, context_die); |
8107 | break; | |
8108 | ||
a3f97cbb JW |
8109 | default: |
8110 | abort (); | |
8111 | } | |
71dfc51f | 8112 | |
a94dbf2c | 8113 | return parm_die; |
a3f97cbb JW |
8114 | } |
8115 | ||
8116 | /* Generate a special type of DIE used as a stand-in for a trailing ellipsis | |
8117 | at the end of an (ANSI prototyped) formal parameters list. */ | |
71dfc51f | 8118 | |
a3f97cbb JW |
8119 | static void |
8120 | gen_unspecified_parameters_die (decl_or_type, context_die) | |
2618f955 | 8121 | register tree decl_or_type ATTRIBUTE_UNUSED; |
a3f97cbb JW |
8122 | register dw_die_ref context_die; |
8123 | { | |
487a6e06 | 8124 | new_die (DW_TAG_unspecified_parameters, context_die); |
a3f97cbb JW |
8125 | } |
8126 | ||
8127 | /* Generate a list of nameless DW_TAG_formal_parameter DIEs (and perhaps a | |
8128 | DW_TAG_unspecified_parameters DIE) to represent the types of the formal | |
8129 | parameters as specified in some function type specification (except for | |
8130 | those which appear as part of a function *definition*). | |
71dfc51f RK |
8131 | |
8132 | Note we must be careful here to output all of the parameter DIEs before* | |
a3f97cbb JW |
8133 | we output any DIEs needed to represent the types of the formal parameters. |
8134 | This keeps svr4 SDB happy because it (incorrectly) thinks that the first | |
8135 | non-parameter DIE it sees ends the formal parameter list. */ | |
71dfc51f | 8136 | |
a3f97cbb JW |
8137 | static void |
8138 | gen_formal_types_die (function_or_method_type, context_die) | |
8139 | register tree function_or_method_type; | |
8140 | register dw_die_ref context_die; | |
8141 | { | |
8142 | register tree link; | |
8143 | register tree formal_type = NULL; | |
8144 | register tree first_parm_type = TYPE_ARG_TYPES (function_or_method_type); | |
8145 | ||
bdb669cb | 8146 | #if 0 |
a3f97cbb JW |
8147 | /* In the case where we are generating a formal types list for a C++ |
8148 | non-static member function type, skip over the first thing on the | |
8149 | TYPE_ARG_TYPES list because it only represents the type of the hidden | |
8150 | `this pointer'. The debugger should be able to figure out (without | |
8151 | being explicitly told) that this non-static member function type takes a | |
8152 | `this pointer' and should be able to figure what the type of that hidden | |
8153 | parameter is from the DW_AT_member attribute of the parent | |
8154 | DW_TAG_subroutine_type DIE. */ | |
8155 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE) | |
8156 | first_parm_type = TREE_CHAIN (first_parm_type); | |
bdb669cb | 8157 | #endif |
a3f97cbb JW |
8158 | |
8159 | /* Make our first pass over the list of formal parameter types and output a | |
8160 | DW_TAG_formal_parameter DIE for each one. */ | |
8161 | for (link = first_parm_type; link; link = TREE_CHAIN (link)) | |
8162 | { | |
a94dbf2c JM |
8163 | register dw_die_ref parm_die; |
8164 | ||
a3f97cbb JW |
8165 | formal_type = TREE_VALUE (link); |
8166 | if (formal_type == void_type_node) | |
8167 | break; | |
8168 | ||
8169 | /* Output a (nameless) DIE to represent the formal parameter itself. */ | |
a94dbf2c JM |
8170 | parm_die = gen_formal_parameter_die (formal_type, context_die); |
8171 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE | |
8172 | && link == first_parm_type) | |
8173 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb JW |
8174 | } |
8175 | ||
8176 | /* If this function type has an ellipsis, add a | |
8177 | DW_TAG_unspecified_parameters DIE to the end of the parameter list. */ | |
8178 | if (formal_type != void_type_node) | |
8179 | gen_unspecified_parameters_die (function_or_method_type, context_die); | |
8180 | ||
8181 | /* Make our second (and final) pass over the list of formal parameter types | |
8182 | and output DIEs to represent those types (as necessary). */ | |
8183 | for (link = TYPE_ARG_TYPES (function_or_method_type); | |
8184 | link; | |
8185 | link = TREE_CHAIN (link)) | |
8186 | { | |
8187 | formal_type = TREE_VALUE (link); | |
8188 | if (formal_type == void_type_node) | |
8189 | break; | |
8190 | ||
b50c02f9 | 8191 | gen_type_die (formal_type, context_die); |
a3f97cbb JW |
8192 | } |
8193 | } | |
8194 | ||
8195 | /* Generate a DIE to represent a declared function (either file-scope or | |
8196 | block-local). */ | |
71dfc51f | 8197 | |
a3f97cbb JW |
8198 | static void |
8199 | gen_subprogram_die (decl, context_die) | |
8200 | register tree decl; | |
8201 | register dw_die_ref context_die; | |
8202 | { | |
8203 | char label_id[MAX_ARTIFICIAL_LABEL_BYTES]; | |
8204 | register tree origin = decl_ultimate_origin (decl); | |
4b674448 | 8205 | register dw_die_ref subr_die; |
b1ccbc24 | 8206 | register rtx fp_reg; |
a3f97cbb JW |
8207 | register tree fn_arg_types; |
8208 | register tree outer_scope; | |
a94dbf2c | 8209 | register dw_die_ref old_die = lookup_decl_die (decl); |
9c6cd30e JM |
8210 | register int declaration |
8211 | = (current_function_decl != decl | |
8212 | || (context_die | |
8213 | && (context_die->die_tag == DW_TAG_structure_type | |
8214 | || context_die->die_tag == DW_TAG_union_type))); | |
a3f97cbb | 8215 | |
a3f97cbb JW |
8216 | if (origin != NULL) |
8217 | { | |
4b674448 | 8218 | subr_die = new_die (DW_TAG_subprogram, context_die); |
a3f97cbb JW |
8219 | add_abstract_origin_attribute (subr_die, origin); |
8220 | } | |
4401bf24 JL |
8221 | else if (old_die && DECL_ABSTRACT (decl) |
8222 | && get_AT_unsigned (old_die, DW_AT_inline)) | |
8223 | { | |
8224 | /* This must be a redefinition of an extern inline function. | |
8225 | We can just reuse the old die here. */ | |
8226 | subr_die = old_die; | |
8227 | ||
8228 | /* Clear out the inlined attribute and parm types. */ | |
8229 | remove_AT (subr_die, DW_AT_inline); | |
8230 | remove_children (subr_die); | |
8231 | } | |
bdb669cb JM |
8232 | else if (old_die) |
8233 | { | |
4b674448 JM |
8234 | register unsigned file_index |
8235 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
a94dbf2c | 8236 | |
3a88cbd1 | 8237 | if (get_AT_flag (old_die, DW_AT_declaration) != 1) |
b75ab88b NC |
8238 | { |
8239 | /* ??? This can happen if there is a bug in the program, for | |
8240 | instance, if it has duplicate function definitions. Ideally, | |
8241 | we should detect this case and ignore it. For now, if we have | |
8242 | already reported an error, any error at all, then assume that | |
8243 | we got here because of a input error, not a dwarf2 bug. */ | |
b75ab88b NC |
8244 | if (errorcount) |
8245 | return; | |
8246 | abort (); | |
8247 | } | |
4b674448 JM |
8248 | |
8249 | /* If the definition comes from the same place as the declaration, | |
a94dbf2c JM |
8250 | maybe use the old DIE. We always want the DIE for this function |
8251 | that has the *_pc attributes to be under comp_unit_die so the | |
8252 | debugger can find it. For inlines, that is the concrete instance, | |
8253 | so we can use the old DIE here. For non-inline methods, we want a | |
8254 | specification DIE at toplevel, so we need a new DIE. For local | |
a96c67ec | 8255 | class methods, this doesn't apply; we just use the old DIE. */ |
a94dbf2c JM |
8256 | if ((DECL_ABSTRACT (decl) || old_die->die_parent == comp_unit_die |
8257 | || context_die == NULL) | |
a96c67ec JM |
8258 | && (DECL_ARTIFICIAL (decl) |
8259 | || (get_AT_unsigned (old_die, DW_AT_decl_file) == file_index | |
8260 | && (get_AT_unsigned (old_die, DW_AT_decl_line) | |
8261 | == (unsigned)DECL_SOURCE_LINE (decl))))) | |
bdb669cb | 8262 | { |
4b674448 JM |
8263 | subr_die = old_die; |
8264 | ||
8265 | /* Clear out the declaration attribute and the parm types. */ | |
8266 | remove_AT (subr_die, DW_AT_declaration); | |
8267 | remove_children (subr_die); | |
8268 | } | |
8269 | else | |
8270 | { | |
8271 | subr_die = new_die (DW_TAG_subprogram, context_die); | |
8272 | add_AT_die_ref (subr_die, DW_AT_specification, old_die); | |
bdb669cb JM |
8273 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
8274 | add_AT_unsigned (subr_die, DW_AT_decl_file, file_index); | |
8275 | if (get_AT_unsigned (old_die, DW_AT_decl_line) | |
2618f955 | 8276 | != (unsigned)DECL_SOURCE_LINE (decl)) |
bdb669cb JM |
8277 | add_AT_unsigned |
8278 | (subr_die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
8279 | } | |
8280 | } | |
a3f97cbb JW |
8281 | else |
8282 | { | |
4edb7b60 JM |
8283 | register dw_die_ref scope_die; |
8284 | ||
8285 | if (DECL_CONTEXT (decl)) | |
8286 | scope_die = scope_die_for (decl, context_die); | |
8287 | else | |
8288 | /* Don't put block extern declarations under comp_unit_die. */ | |
8289 | scope_die = context_die; | |
8290 | ||
8291 | subr_die = new_die (DW_TAG_subprogram, scope_die); | |
8292 | ||
273dbe67 JM |
8293 | if (TREE_PUBLIC (decl)) |
8294 | add_AT_flag (subr_die, DW_AT_external, 1); | |
71dfc51f | 8295 | |
a3f97cbb | 8296 | add_name_and_src_coords_attributes (subr_die, decl); |
4927276d JM |
8297 | if (debug_info_level > DINFO_LEVEL_TERSE) |
8298 | { | |
8299 | register tree type = TREE_TYPE (decl); | |
71dfc51f | 8300 | |
4927276d JM |
8301 | add_prototyped_attribute (subr_die, type); |
8302 | add_type_attribute (subr_die, TREE_TYPE (type), 0, 0, context_die); | |
8303 | } | |
71dfc51f | 8304 | |
a3f97cbb | 8305 | add_pure_or_virtual_attribute (subr_die, decl); |
273dbe67 JM |
8306 | if (DECL_ARTIFICIAL (decl)) |
8307 | add_AT_flag (subr_die, DW_AT_artificial, 1); | |
a94dbf2c JM |
8308 | if (TREE_PROTECTED (decl)) |
8309 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_protected); | |
8310 | else if (TREE_PRIVATE (decl)) | |
8311 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 8312 | } |
4edb7b60 | 8313 | |
a94dbf2c JM |
8314 | if (declaration) |
8315 | { | |
8316 | add_AT_flag (subr_die, DW_AT_declaration, 1); | |
8317 | ||
8318 | /* The first time we see a member function, it is in the context of | |
8319 | the class to which it belongs. We make sure of this by emitting | |
8320 | the class first. The next time is the definition, which is | |
8321 | handled above. The two may come from the same source text. */ | |
f6c74b02 | 8322 | if (DECL_CONTEXT (decl)) |
a94dbf2c JM |
8323 | equate_decl_number_to_die (decl, subr_die); |
8324 | } | |
8325 | else if (DECL_ABSTRACT (decl)) | |
a3f97cbb | 8326 | { |
4401bf24 JL |
8327 | /* ??? Checking DECL_DEFER_OUTPUT is correct for static inline functions, |
8328 | but not for extern inline functions. We can't get this completely | |
8329 | correct because information about whether the function was declared | |
8330 | inline is not saved anywhere. */ | |
61b32c02 JM |
8331 | if (DECL_DEFER_OUTPUT (decl)) |
8332 | { | |
14a774a9 | 8333 | if (DECL_INLINE (decl) && !flag_no_inline) |
61b32c02 JM |
8334 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_inlined); |
8335 | else | |
8336 | add_AT_unsigned (subr_die, DW_AT_inline, | |
8337 | DW_INL_declared_not_inlined); | |
8338 | } | |
14a774a9 | 8339 | else if (DECL_INLINE (decl) && !flag_no_inline) |
61b32c02 JM |
8340 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_inlined); |
8341 | else | |
8342 | abort (); | |
8343 | ||
a3f97cbb JW |
8344 | equate_decl_number_to_die (decl, subr_die); |
8345 | } | |
8346 | else if (!DECL_EXTERNAL (decl)) | |
8347 | { | |
71dfc51f | 8348 | if (origin == NULL_TREE) |
ba7b35df | 8349 | equate_decl_number_to_die (decl, subr_die); |
71dfc51f | 8350 | |
5c90448c JM |
8351 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_BEGIN_LABEL, |
8352 | current_funcdef_number); | |
7d4440be | 8353 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label_id); |
5c90448c JM |
8354 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_END_LABEL, |
8355 | current_funcdef_number); | |
a3f97cbb JW |
8356 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label_id); |
8357 | ||
d291dd49 JM |
8358 | add_pubname (decl, subr_die); |
8359 | add_arange (decl, subr_die); | |
8360 | ||
a3f97cbb | 8361 | #ifdef MIPS_DEBUGGING_INFO |
a3f97cbb JW |
8362 | /* Add a reference to the FDE for this routine. */ |
8363 | add_AT_fde_ref (subr_die, DW_AT_MIPS_fde, current_funcdef_fde); | |
8364 | #endif | |
8365 | ||
810429b7 JM |
8366 | /* Define the "frame base" location for this routine. We use the |
8367 | frame pointer or stack pointer registers, since the RTL for local | |
8368 | variables is relative to one of them. */ | |
b1ccbc24 RK |
8369 | fp_reg |
8370 | = frame_pointer_needed ? hard_frame_pointer_rtx : stack_pointer_rtx; | |
8371 | add_AT_loc (subr_die, DW_AT_frame_base, reg_loc_descriptor (fp_reg)); | |
a3f97cbb | 8372 | |
ef76d03b JW |
8373 | #if 0 |
8374 | /* ??? This fails for nested inline functions, because context_display | |
8375 | is not part of the state saved/restored for inline functions. */ | |
88dad228 | 8376 | if (current_function_needs_context) |
ef76d03b JW |
8377 | add_AT_location_description (subr_die, DW_AT_static_link, |
8378 | lookup_static_chain (decl)); | |
8379 | #endif | |
a3f97cbb JW |
8380 | } |
8381 | ||
8382 | /* Now output descriptions of the arguments for this function. This gets | |
8383 | (unnecessarily?) complex because of the fact that the DECL_ARGUMENT list | |
8384 | for a FUNCTION_DECL doesn't indicate cases where there was a trailing | |
8385 | `...' at the end of the formal parameter list. In order to find out if | |
8386 | there was a trailing ellipsis or not, we must instead look at the type | |
8387 | associated with the FUNCTION_DECL. This will be a node of type | |
8388 | FUNCTION_TYPE. If the chain of type nodes hanging off of this | |
8389 | FUNCTION_TYPE node ends with a void_type_node then there should *not* be | |
8390 | an ellipsis at the end. */ | |
ab72d377 | 8391 | push_decl_scope (decl); |
71dfc51f | 8392 | |
a3f97cbb JW |
8393 | /* In the case where we are describing a mere function declaration, all we |
8394 | need to do here (and all we *can* do here) is to describe the *types* of | |
8395 | its formal parameters. */ | |
4927276d | 8396 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
71dfc51f | 8397 | ; |
4edb7b60 JM |
8398 | else if (declaration) |
8399 | gen_formal_types_die (TREE_TYPE (decl), subr_die); | |
a3f97cbb JW |
8400 | else |
8401 | { | |
8402 | /* Generate DIEs to represent all known formal parameters */ | |
8403 | register tree arg_decls = DECL_ARGUMENTS (decl); | |
8404 | register tree parm; | |
8405 | ||
8406 | /* When generating DIEs, generate the unspecified_parameters DIE | |
8407 | instead if we come across the arg "__builtin_va_alist" */ | |
8408 | for (parm = arg_decls; parm; parm = TREE_CHAIN (parm)) | |
71dfc51f RK |
8409 | if (TREE_CODE (parm) == PARM_DECL) |
8410 | { | |
db3cf6fb MS |
8411 | if (DECL_NAME (parm) |
8412 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
8413 | "__builtin_va_alist")) | |
71dfc51f RK |
8414 | gen_unspecified_parameters_die (parm, subr_die); |
8415 | else | |
8416 | gen_decl_die (parm, subr_die); | |
8417 | } | |
a3f97cbb JW |
8418 | |
8419 | /* Decide whether we need a unspecified_parameters DIE at the end. | |
8420 | There are 2 more cases to do this for: 1) the ansi ... declaration - | |
8421 | this is detectable when the end of the arg list is not a | |
8422 | void_type_node 2) an unprototyped function declaration (not a | |
8423 | definition). This just means that we have no info about the | |
8424 | parameters at all. */ | |
8425 | fn_arg_types = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
71dfc51f | 8426 | if (fn_arg_types != NULL) |
a3f97cbb JW |
8427 | { |
8428 | /* this is the prototyped case, check for ... */ | |
8429 | if (TREE_VALUE (tree_last (fn_arg_types)) != void_type_node) | |
71dfc51f | 8430 | gen_unspecified_parameters_die (decl, subr_die); |
a3f97cbb | 8431 | } |
71dfc51f RK |
8432 | else if (DECL_INITIAL (decl) == NULL_TREE) |
8433 | gen_unspecified_parameters_die (decl, subr_die); | |
a3f97cbb JW |
8434 | } |
8435 | ||
8436 | /* Output Dwarf info for all of the stuff within the body of the function | |
8437 | (if it has one - it may be just a declaration). */ | |
8438 | outer_scope = DECL_INITIAL (decl); | |
8439 | ||
d7248bff JM |
8440 | /* Note that here, `outer_scope' is a pointer to the outermost BLOCK |
8441 | node created to represent a function. This outermost BLOCK actually | |
8442 | represents the outermost binding contour for the function, i.e. the | |
8443 | contour in which the function's formal parameters and labels get | |
8444 | declared. Curiously, it appears that the front end doesn't actually | |
8445 | put the PARM_DECL nodes for the current function onto the BLOCK_VARS | |
8446 | list for this outer scope. (They are strung off of the DECL_ARGUMENTS | |
8447 | list for the function instead.) The BLOCK_VARS list for the | |
8448 | `outer_scope' does provide us with a list of the LABEL_DECL nodes for | |
8449 | the function however, and we output DWARF info for those in | |
8450 | decls_for_scope. Just within the `outer_scope' there will be a BLOCK | |
8451 | node representing the function's outermost pair of curly braces, and | |
8452 | any blocks used for the base and member initializers of a C++ | |
8453 | constructor function. */ | |
4edb7b60 | 8454 | if (! declaration && TREE_CODE (outer_scope) != ERROR_MARK) |
7e23cb16 JM |
8455 | { |
8456 | current_function_has_inlines = 0; | |
8457 | decls_for_scope (outer_scope, subr_die, 0); | |
71dfc51f | 8458 | |
ce61cc73 | 8459 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
7e23cb16 JM |
8460 | if (current_function_has_inlines) |
8461 | { | |
8462 | add_AT_flag (subr_die, DW_AT_MIPS_has_inlines, 1); | |
8463 | if (! comp_unit_has_inlines) | |
8464 | { | |
8465 | add_AT_flag (comp_unit_die, DW_AT_MIPS_has_inlines, 1); | |
8466 | comp_unit_has_inlines = 1; | |
8467 | } | |
8468 | } | |
8469 | #endif | |
8470 | } | |
71dfc51f | 8471 | |
ab72d377 | 8472 | pop_decl_scope (); |
a3f97cbb JW |
8473 | } |
8474 | ||
8475 | /* Generate a DIE to represent a declared data object. */ | |
71dfc51f | 8476 | |
a3f97cbb JW |
8477 | static void |
8478 | gen_variable_die (decl, context_die) | |
8479 | register tree decl; | |
8480 | register dw_die_ref context_die; | |
8481 | { | |
8482 | register tree origin = decl_ultimate_origin (decl); | |
8483 | register dw_die_ref var_die = new_die (DW_TAG_variable, context_die); | |
71dfc51f | 8484 | |
bdb669cb | 8485 | dw_die_ref old_die = lookup_decl_die (decl); |
4edb7b60 JM |
8486 | int declaration |
8487 | = (DECL_EXTERNAL (decl) | |
a94dbf2c JM |
8488 | || current_function_decl != decl_function_context (decl) |
8489 | || context_die->die_tag == DW_TAG_structure_type | |
8490 | || context_die->die_tag == DW_TAG_union_type); | |
4edb7b60 | 8491 | |
a3f97cbb | 8492 | if (origin != NULL) |
71dfc51f | 8493 | add_abstract_origin_attribute (var_die, origin); |
f76b8156 JW |
8494 | /* Loop unrolling can create multiple blocks that refer to the same |
8495 | static variable, so we must test for the DW_AT_declaration flag. */ | |
8496 | /* ??? Loop unrolling/reorder_blocks should perhaps be rewritten to | |
8497 | copy decls and set the DECL_ABSTRACT flag on them instead of | |
8498 | sharing them. */ | |
8499 | else if (old_die && TREE_STATIC (decl) | |
8500 | && get_AT_flag (old_die, DW_AT_declaration) == 1) | |
bdb669cb | 8501 | { |
e689ae67 | 8502 | /* This is a definition of a C++ class level static. */ |
bdb669cb JM |
8503 | add_AT_die_ref (var_die, DW_AT_specification, old_die); |
8504 | if (DECL_NAME (decl)) | |
8505 | { | |
8506 | register unsigned file_index | |
8507 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 8508 | |
bdb669cb JM |
8509 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
8510 | add_AT_unsigned (var_die, DW_AT_decl_file, file_index); | |
71dfc51f | 8511 | |
bdb669cb | 8512 | if (get_AT_unsigned (old_die, DW_AT_decl_line) |
2618f955 | 8513 | != (unsigned)DECL_SOURCE_LINE (decl)) |
71dfc51f RK |
8514 | |
8515 | add_AT_unsigned (var_die, DW_AT_decl_line, | |
8516 | DECL_SOURCE_LINE (decl)); | |
bdb669cb JM |
8517 | } |
8518 | } | |
a3f97cbb JW |
8519 | else |
8520 | { | |
8521 | add_name_and_src_coords_attributes (var_die, decl); | |
a3f97cbb JW |
8522 | add_type_attribute (var_die, TREE_TYPE (decl), |
8523 | TREE_READONLY (decl), | |
8524 | TREE_THIS_VOLATILE (decl), context_die); | |
71dfc51f | 8525 | |
273dbe67 JM |
8526 | if (TREE_PUBLIC (decl)) |
8527 | add_AT_flag (var_die, DW_AT_external, 1); | |
71dfc51f | 8528 | |
273dbe67 JM |
8529 | if (DECL_ARTIFICIAL (decl)) |
8530 | add_AT_flag (var_die, DW_AT_artificial, 1); | |
71dfc51f | 8531 | |
a94dbf2c JM |
8532 | if (TREE_PROTECTED (decl)) |
8533 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 8534 | |
a94dbf2c JM |
8535 | else if (TREE_PRIVATE (decl)) |
8536 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 8537 | } |
4edb7b60 JM |
8538 | |
8539 | if (declaration) | |
8540 | add_AT_flag (var_die, DW_AT_declaration, 1); | |
8541 | ||
8542 | if ((declaration && decl_class_context (decl)) || DECL_ABSTRACT (decl)) | |
8543 | equate_decl_number_to_die (decl, var_die); | |
8544 | ||
8545 | if (! declaration && ! DECL_ABSTRACT (decl)) | |
a3f97cbb | 8546 | { |
141719a8 | 8547 | equate_decl_number_to_die (decl, var_die); |
a3f97cbb | 8548 | add_location_or_const_value_attribute (var_die, decl); |
d291dd49 | 8549 | add_pubname (decl, var_die); |
a3f97cbb JW |
8550 | } |
8551 | } | |
8552 | ||
8553 | /* Generate a DIE to represent a label identifier. */ | |
71dfc51f | 8554 | |
a3f97cbb JW |
8555 | static void |
8556 | gen_label_die (decl, context_die) | |
8557 | register tree decl; | |
8558 | register dw_die_ref context_die; | |
8559 | { | |
8560 | register tree origin = decl_ultimate_origin (decl); | |
8561 | register dw_die_ref lbl_die = new_die (DW_TAG_label, context_die); | |
8562 | register rtx insn; | |
8563 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
5c90448c | 8564 | char label2[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 8565 | |
a3f97cbb | 8566 | if (origin != NULL) |
71dfc51f | 8567 | add_abstract_origin_attribute (lbl_die, origin); |
a3f97cbb | 8568 | else |
71dfc51f RK |
8569 | add_name_and_src_coords_attributes (lbl_die, decl); |
8570 | ||
a3f97cbb | 8571 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 8572 | equate_decl_number_to_die (decl, lbl_die); |
a3f97cbb JW |
8573 | else |
8574 | { | |
8575 | insn = DECL_RTL (decl); | |
088e7160 NC |
8576 | |
8577 | /* Deleted labels are programmer specified labels which have been | |
8578 | eliminated because of various optimisations. We still emit them | |
8579 | here so that it is possible to put breakpoints on them. */ | |
8580 | if (GET_CODE (insn) == CODE_LABEL | |
8581 | || ((GET_CODE (insn) == NOTE | |
8582 | && NOTE_LINE_NUMBER (insn) == NOTE_INSN_DELETED_LABEL))) | |
a3f97cbb JW |
8583 | { |
8584 | /* When optimization is enabled (via -O) some parts of the compiler | |
8585 | (e.g. jump.c and cse.c) may try to delete CODE_LABEL insns which | |
8586 | represent source-level labels which were explicitly declared by | |
8587 | the user. This really shouldn't be happening though, so catch | |
8588 | it if it ever does happen. */ | |
8589 | if (INSN_DELETED_P (insn)) | |
71dfc51f RK |
8590 | abort (); |
8591 | ||
5c90448c JM |
8592 | sprintf (label2, INSN_LABEL_FMT, current_funcdef_number); |
8593 | ASM_GENERATE_INTERNAL_LABEL (label, label2, | |
8594 | (unsigned) INSN_UID (insn)); | |
a3f97cbb JW |
8595 | add_AT_lbl_id (lbl_die, DW_AT_low_pc, label); |
8596 | } | |
8597 | } | |
8598 | } | |
8599 | ||
8600 | /* Generate a DIE for a lexical block. */ | |
71dfc51f | 8601 | |
a3f97cbb | 8602 | static void |
d7248bff | 8603 | gen_lexical_block_die (stmt, context_die, depth) |
a3f97cbb JW |
8604 | register tree stmt; |
8605 | register dw_die_ref context_die; | |
d7248bff | 8606 | int depth; |
a3f97cbb JW |
8607 | { |
8608 | register dw_die_ref stmt_die = new_die (DW_TAG_lexical_block, context_die); | |
8609 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f RK |
8610 | |
8611 | if (! BLOCK_ABSTRACT (stmt)) | |
a3f97cbb | 8612 | { |
5c90448c JM |
8613 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
8614 | next_block_number); | |
a3f97cbb | 8615 | add_AT_lbl_id (stmt_die, DW_AT_low_pc, label); |
5c90448c | 8616 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
a3f97cbb JW |
8617 | add_AT_lbl_id (stmt_die, DW_AT_high_pc, label); |
8618 | } | |
71dfc51f | 8619 | |
7d4440be | 8620 | push_decl_scope (stmt); |
d7248bff | 8621 | decls_for_scope (stmt, stmt_die, depth); |
7d4440be | 8622 | pop_decl_scope (); |
a3f97cbb JW |
8623 | } |
8624 | ||
8625 | /* Generate a DIE for an inlined subprogram. */ | |
71dfc51f | 8626 | |
a3f97cbb | 8627 | static void |
d7248bff | 8628 | gen_inlined_subroutine_die (stmt, context_die, depth) |
a3f97cbb JW |
8629 | register tree stmt; |
8630 | register dw_die_ref context_die; | |
d7248bff | 8631 | int depth; |
a3f97cbb | 8632 | { |
71dfc51f | 8633 | if (! BLOCK_ABSTRACT (stmt)) |
a3f97cbb | 8634 | { |
71dfc51f RK |
8635 | register dw_die_ref subr_die |
8636 | = new_die (DW_TAG_inlined_subroutine, context_die); | |
ab72d377 | 8637 | register tree decl = block_ultimate_origin (stmt); |
d7248bff | 8638 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 8639 | |
ab72d377 | 8640 | add_abstract_origin_attribute (subr_die, decl); |
5c90448c JM |
8641 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
8642 | next_block_number); | |
a3f97cbb | 8643 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label); |
5c90448c | 8644 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
a3f97cbb | 8645 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label); |
ab72d377 | 8646 | push_decl_scope (decl); |
d7248bff | 8647 | decls_for_scope (stmt, subr_die, depth); |
ab72d377 | 8648 | pop_decl_scope (); |
7e23cb16 | 8649 | current_function_has_inlines = 1; |
a3f97cbb | 8650 | } |
a3f97cbb JW |
8651 | } |
8652 | ||
8653 | /* Generate a DIE for a field in a record, or structure. */ | |
71dfc51f | 8654 | |
a3f97cbb JW |
8655 | static void |
8656 | gen_field_die (decl, context_die) | |
8657 | register tree decl; | |
8658 | register dw_die_ref context_die; | |
8659 | { | |
8660 | register dw_die_ref decl_die = new_die (DW_TAG_member, context_die); | |
71dfc51f | 8661 | |
a3f97cbb | 8662 | add_name_and_src_coords_attributes (decl_die, decl); |
a3f97cbb JW |
8663 | add_type_attribute (decl_die, member_declared_type (decl), |
8664 | TREE_READONLY (decl), TREE_THIS_VOLATILE (decl), | |
8665 | context_die); | |
71dfc51f | 8666 | |
a3f97cbb JW |
8667 | /* If this is a bit field... */ |
8668 | if (DECL_BIT_FIELD_TYPE (decl)) | |
8669 | { | |
8670 | add_byte_size_attribute (decl_die, decl); | |
8671 | add_bit_size_attribute (decl_die, decl); | |
8672 | add_bit_offset_attribute (decl_die, decl); | |
8673 | } | |
71dfc51f | 8674 | |
a94dbf2c JM |
8675 | if (TREE_CODE (DECL_FIELD_CONTEXT (decl)) != UNION_TYPE) |
8676 | add_data_member_location_attribute (decl_die, decl); | |
71dfc51f | 8677 | |
273dbe67 JM |
8678 | if (DECL_ARTIFICIAL (decl)) |
8679 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
71dfc51f | 8680 | |
a94dbf2c JM |
8681 | if (TREE_PROTECTED (decl)) |
8682 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 8683 | |
a94dbf2c JM |
8684 | else if (TREE_PRIVATE (decl)) |
8685 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb JW |
8686 | } |
8687 | ||
ab72d377 JM |
8688 | #if 0 |
8689 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. | |
8690 | Use modified_type_die instead. | |
a3f97cbb JW |
8691 | We keep this code here just in case these types of DIEs may be needed to |
8692 | represent certain things in other languages (e.g. Pascal) someday. */ | |
8693 | static void | |
8694 | gen_pointer_type_die (type, context_die) | |
8695 | register tree type; | |
8696 | register dw_die_ref context_die; | |
8697 | { | |
71dfc51f RK |
8698 | register dw_die_ref ptr_die |
8699 | = new_die (DW_TAG_pointer_type, scope_die_for (type, context_die)); | |
8700 | ||
a3f97cbb | 8701 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 8702 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 8703 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb JW |
8704 | } |
8705 | ||
ab72d377 JM |
8706 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. |
8707 | Use modified_type_die instead. | |
a3f97cbb JW |
8708 | We keep this code here just in case these types of DIEs may be needed to |
8709 | represent certain things in other languages (e.g. Pascal) someday. */ | |
8710 | static void | |
8711 | gen_reference_type_die (type, context_die) | |
8712 | register tree type; | |
8713 | register dw_die_ref context_die; | |
8714 | { | |
71dfc51f RK |
8715 | register dw_die_ref ref_die |
8716 | = new_die (DW_TAG_reference_type, scope_die_for (type, context_die)); | |
8717 | ||
a3f97cbb | 8718 | equate_type_number_to_die (type, ref_die); |
a3f97cbb | 8719 | add_type_attribute (ref_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 8720 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb | 8721 | } |
ab72d377 | 8722 | #endif |
a3f97cbb JW |
8723 | |
8724 | /* Generate a DIE for a pointer to a member type. */ | |
8725 | static void | |
8726 | gen_ptr_to_mbr_type_die (type, context_die) | |
8727 | register tree type; | |
8728 | register dw_die_ref context_die; | |
8729 | { | |
71dfc51f RK |
8730 | register dw_die_ref ptr_die |
8731 | = new_die (DW_TAG_ptr_to_member_type, scope_die_for (type, context_die)); | |
8732 | ||
a3f97cbb | 8733 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 8734 | add_AT_die_ref (ptr_die, DW_AT_containing_type, |
bdb669cb | 8735 | lookup_type_die (TYPE_OFFSET_BASETYPE (type))); |
a3f97cbb JW |
8736 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
8737 | } | |
8738 | ||
8739 | /* Generate the DIE for the compilation unit. */ | |
71dfc51f | 8740 | |
a96c67ec JM |
8741 | static dw_die_ref |
8742 | gen_compile_unit_die (filename) | |
8743 | register const char *filename; | |
a3f97cbb | 8744 | { |
a96c67ec | 8745 | register dw_die_ref die; |
a3f97cbb | 8746 | char producer[250]; |
a3f97cbb | 8747 | char *wd = getpwd (); |
a96c67ec | 8748 | int language; |
a3f97cbb | 8749 | |
a96c67ec JM |
8750 | die = new_die (DW_TAG_compile_unit, NULL); |
8751 | add_name_attribute (die, filename); | |
bdb669cb | 8752 | |
a96c67ec JM |
8753 | if (wd != NULL && filename[0] != DIR_SEPARATOR) |
8754 | add_AT_string (die, DW_AT_comp_dir, wd); | |
a3f97cbb JW |
8755 | |
8756 | sprintf (producer, "%s %s", language_string, version_string); | |
8757 | ||
8758 | #ifdef MIPS_DEBUGGING_INFO | |
8759 | /* The MIPS/SGI compilers place the 'cc' command line options in the producer | |
8760 | string. The SGI debugger looks for -g, -g1, -g2, or -g3; if they do | |
8761 | not appear in the producer string, the debugger reaches the conclusion | |
8762 | that the object file is stripped and has no debugging information. | |
8763 | To get the MIPS/SGI debugger to believe that there is debugging | |
8764 | information in the object file, we add a -g to the producer string. */ | |
4927276d JM |
8765 | if (debug_info_level > DINFO_LEVEL_TERSE) |
8766 | strcat (producer, " -g"); | |
a3f97cbb JW |
8767 | #endif |
8768 | ||
a96c67ec | 8769 | add_AT_string (die, DW_AT_producer, producer); |
a9d38797 | 8770 | |
a3f97cbb | 8771 | if (strcmp (language_string, "GNU C++") == 0) |
a96c67ec | 8772 | language = DW_LANG_C_plus_plus; |
a3f97cbb | 8773 | else if (strcmp (language_string, "GNU Ada") == 0) |
a96c67ec | 8774 | language = DW_LANG_Ada83; |
a9d38797 | 8775 | else if (strcmp (language_string, "GNU F77") == 0) |
a96c67ec | 8776 | language = DW_LANG_Fortran77; |
bc28c45b | 8777 | else if (strcmp (language_string, "GNU Pascal") == 0) |
a96c67ec | 8778 | language = DW_LANG_Pascal83; |
a3f97cbb | 8779 | else if (flag_traditional) |
a96c67ec | 8780 | language = DW_LANG_C; |
a3f97cbb | 8781 | else |
a96c67ec | 8782 | language = DW_LANG_C89; |
a9d38797 | 8783 | |
a96c67ec JM |
8784 | add_AT_unsigned (die, DW_AT_language, language); |
8785 | ||
8786 | return die; | |
a3f97cbb JW |
8787 | } |
8788 | ||
8789 | /* Generate a DIE for a string type. */ | |
71dfc51f | 8790 | |
a3f97cbb JW |
8791 | static void |
8792 | gen_string_type_die (type, context_die) | |
8793 | register tree type; | |
8794 | register dw_die_ref context_die; | |
8795 | { | |
71dfc51f RK |
8796 | register dw_die_ref type_die |
8797 | = new_die (DW_TAG_string_type, scope_die_for (type, context_die)); | |
8798 | ||
bdb669cb | 8799 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
8800 | |
8801 | /* Fudge the string length attribute for now. */ | |
71dfc51f | 8802 | |
a3f97cbb | 8803 | /* TODO: add string length info. |
71dfc51f | 8804 | string_length_attribute (TYPE_MAX_VALUE (TYPE_DOMAIN (type))); |
a3f97cbb JW |
8805 | bound_representation (upper_bound, 0, 'u'); */ |
8806 | } | |
8807 | ||
61b32c02 | 8808 | /* Generate the DIE for a base class. */ |
71dfc51f | 8809 | |
61b32c02 JM |
8810 | static void |
8811 | gen_inheritance_die (binfo, context_die) | |
8812 | register tree binfo; | |
8813 | register dw_die_ref context_die; | |
8814 | { | |
8815 | dw_die_ref die = new_die (DW_TAG_inheritance, context_die); | |
71dfc51f | 8816 | |
61b32c02 JM |
8817 | add_type_attribute (die, BINFO_TYPE (binfo), 0, 0, context_die); |
8818 | add_data_member_location_attribute (die, binfo); | |
71dfc51f | 8819 | |
61b32c02 JM |
8820 | if (TREE_VIA_VIRTUAL (binfo)) |
8821 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); | |
8822 | if (TREE_VIA_PUBLIC (binfo)) | |
8823 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_public); | |
8824 | else if (TREE_VIA_PROTECTED (binfo)) | |
8825 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_protected); | |
8826 | } | |
8827 | ||
956d6950 | 8828 | /* Generate a DIE for a class member. */ |
71dfc51f | 8829 | |
a3f97cbb JW |
8830 | static void |
8831 | gen_member_die (type, context_die) | |
8832 | register tree type; | |
8833 | register dw_die_ref context_die; | |
8834 | { | |
61b32c02 | 8835 | register tree member; |
71dfc51f | 8836 | |
a3f97cbb JW |
8837 | /* If this is not an incomplete type, output descriptions of each of its |
8838 | members. Note that as we output the DIEs necessary to represent the | |
8839 | members of this record or union type, we will also be trying to output | |
8840 | DIEs to represent the *types* of those members. However the `type' | |
8841 | function (above) will specifically avoid generating type DIEs for member | |
8842 | types *within* the list of member DIEs for this (containing) type execpt | |
8843 | for those types (of members) which are explicitly marked as also being | |
8844 | members of this (containing) type themselves. The g++ front- end can | |
8845 | force any given type to be treated as a member of some other | |
8846 | (containing) type by setting the TYPE_CONTEXT of the given (member) type | |
8847 | to point to the TREE node representing the appropriate (containing) | |
8848 | type. */ | |
8849 | ||
61b32c02 JM |
8850 | /* First output info about the base classes. */ |
8851 | if (TYPE_BINFO (type) && TYPE_BINFO_BASETYPES (type)) | |
a3f97cbb | 8852 | { |
61b32c02 JM |
8853 | register tree bases = TYPE_BINFO_BASETYPES (type); |
8854 | register int n_bases = TREE_VEC_LENGTH (bases); | |
8855 | register int i; | |
8856 | ||
8857 | for (i = 0; i < n_bases; i++) | |
8858 | gen_inheritance_die (TREE_VEC_ELT (bases, i), context_die); | |
a3f97cbb JW |
8859 | } |
8860 | ||
61b32c02 JM |
8861 | /* Now output info about the data members and type members. */ |
8862 | for (member = TYPE_FIELDS (type); member; member = TREE_CHAIN (member)) | |
8863 | gen_decl_die (member, context_die); | |
8864 | ||
a3f97cbb | 8865 | /* Now output info about the function members (if any). */ |
61b32c02 JM |
8866 | for (member = TYPE_METHODS (type); member; member = TREE_CHAIN (member)) |
8867 | gen_decl_die (member, context_die); | |
a3f97cbb JW |
8868 | } |
8869 | ||
8870 | /* Generate a DIE for a structure or union type. */ | |
71dfc51f | 8871 | |
a3f97cbb | 8872 | static void |
273dbe67 | 8873 | gen_struct_or_union_type_die (type, context_die) |
a3f97cbb | 8874 | register tree type; |
a3f97cbb JW |
8875 | register dw_die_ref context_die; |
8876 | { | |
273dbe67 | 8877 | register dw_die_ref type_die = lookup_type_die (type); |
a082c85a JM |
8878 | register dw_die_ref scope_die = 0; |
8879 | register int nested = 0; | |
273dbe67 JM |
8880 | |
8881 | if (type_die && ! TYPE_SIZE (type)) | |
8882 | return; | |
a082c85a | 8883 | |
71dfc51f | 8884 | if (TYPE_CONTEXT (type) != NULL_TREE |
5f2f160c | 8885 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type))) |
a082c85a JM |
8886 | nested = 1; |
8887 | ||
a94dbf2c | 8888 | scope_die = scope_die_for (type, context_die); |
a082c85a JM |
8889 | |
8890 | if (! type_die || (nested && scope_die == comp_unit_die)) | |
273dbe67 | 8891 | /* First occurrence of type or toplevel definition of nested class. */ |
a3f97cbb | 8892 | { |
273dbe67 | 8893 | register dw_die_ref old_die = type_die; |
71dfc51f | 8894 | |
a3f97cbb JW |
8895 | type_die = new_die (TREE_CODE (type) == RECORD_TYPE |
8896 | ? DW_TAG_structure_type : DW_TAG_union_type, | |
a082c85a | 8897 | scope_die); |
a3f97cbb JW |
8898 | equate_type_number_to_die (type, type_die); |
8899 | add_name_attribute (type_die, type_tag (type)); | |
273dbe67 JM |
8900 | if (old_die) |
8901 | add_AT_die_ref (type_die, DW_AT_specification, old_die); | |
a3f97cbb | 8902 | } |
4b674448 | 8903 | else |
273dbe67 | 8904 | remove_AT (type_die, DW_AT_declaration); |
a3f97cbb | 8905 | |
a94dbf2c JM |
8906 | /* If we're not in the right context to be defining this type, defer to |
8907 | avoid tricky recursion. */ | |
8908 | if (TYPE_SIZE (type) && decl_scope_depth > 0 && scope_die == comp_unit_die) | |
8909 | { | |
8910 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
8911 | pend_type (type); | |
8912 | } | |
a3f97cbb JW |
8913 | /* If this type has been completed, then give it a byte_size attribute and |
8914 | then give a list of members. */ | |
a94dbf2c | 8915 | else if (TYPE_SIZE (type)) |
a3f97cbb JW |
8916 | { |
8917 | /* Prevent infinite recursion in cases where the type of some member of | |
8918 | this type is expressed in terms of this type itself. */ | |
8919 | TREE_ASM_WRITTEN (type) = 1; | |
273dbe67 | 8920 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 8921 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 8922 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 8923 | |
ef76d03b JW |
8924 | /* If the first reference to this type was as the return type of an |
8925 | inline function, then it may not have a parent. Fix this now. */ | |
8926 | if (type_die->die_parent == NULL) | |
8927 | add_child_die (scope_die, type_die); | |
8928 | ||
273dbe67 JM |
8929 | push_decl_scope (type); |
8930 | gen_member_die (type, type_die); | |
8931 | pop_decl_scope (); | |
71dfc51f | 8932 | |
a94dbf2c JM |
8933 | /* GNU extension: Record what type our vtable lives in. */ |
8934 | if (TYPE_VFIELD (type)) | |
8935 | { | |
8936 | tree vtype = DECL_FCONTEXT (TYPE_VFIELD (type)); | |
71dfc51f | 8937 | |
a96c67ec JM |
8938 | if (vtype != type) |
8939 | { | |
8940 | gen_type_die (vtype, context_die); | |
8941 | add_AT_die_ref (type_die, DW_AT_containing_type, | |
8942 | lookup_type_die (vtype)); | |
8943 | } | |
a94dbf2c | 8944 | } |
a3f97cbb | 8945 | } |
4b674448 | 8946 | else |
8a8c3656 JM |
8947 | { |
8948 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a30d4514 JM |
8949 | |
8950 | /* We can't do this for function-local types, and we don't need to. */ | |
348bb3c7 | 8951 | if (! decl_function_context (TYPE_STUB_DECL (type))) |
a30d4514 | 8952 | add_incomplete_type (type); |
8a8c3656 | 8953 | } |
a3f97cbb JW |
8954 | } |
8955 | ||
8956 | /* Generate a DIE for a subroutine _type_. */ | |
71dfc51f | 8957 | |
a3f97cbb JW |
8958 | static void |
8959 | gen_subroutine_type_die (type, context_die) | |
8960 | register tree type; | |
8961 | register dw_die_ref context_die; | |
8962 | { | |
8963 | register tree return_type = TREE_TYPE (type); | |
71dfc51f RK |
8964 | register dw_die_ref subr_die |
8965 | = new_die (DW_TAG_subroutine_type, scope_die_for (type, context_die)); | |
8966 | ||
a3f97cbb JW |
8967 | equate_type_number_to_die (type, subr_die); |
8968 | add_prototyped_attribute (subr_die, type); | |
a3f97cbb | 8969 | add_type_attribute (subr_die, return_type, 0, 0, context_die); |
a94dbf2c | 8970 | gen_formal_types_die (type, subr_die); |
a3f97cbb JW |
8971 | } |
8972 | ||
8973 | /* Generate a DIE for a type definition */ | |
71dfc51f | 8974 | |
a3f97cbb JW |
8975 | static void |
8976 | gen_typedef_die (decl, context_die) | |
8977 | register tree decl; | |
8978 | register dw_die_ref context_die; | |
8979 | { | |
a3f97cbb | 8980 | register dw_die_ref type_die; |
a94dbf2c JM |
8981 | register tree origin; |
8982 | ||
8983 | if (TREE_ASM_WRITTEN (decl)) | |
8984 | return; | |
8985 | TREE_ASM_WRITTEN (decl) = 1; | |
8986 | ||
ab72d377 | 8987 | type_die = new_die (DW_TAG_typedef, scope_die_for (decl, context_die)); |
a94dbf2c | 8988 | origin = decl_ultimate_origin (decl); |
a3f97cbb | 8989 | if (origin != NULL) |
a94dbf2c | 8990 | add_abstract_origin_attribute (type_die, origin); |
a3f97cbb JW |
8991 | else |
8992 | { | |
a94dbf2c | 8993 | register tree type; |
a3f97cbb | 8994 | add_name_and_src_coords_attributes (type_die, decl); |
a94dbf2c JM |
8995 | if (DECL_ORIGINAL_TYPE (decl)) |
8996 | { | |
8997 | type = DECL_ORIGINAL_TYPE (decl); | |
8998 | equate_type_number_to_die (TREE_TYPE (decl), type_die); | |
8999 | } | |
9000 | else | |
9001 | type = TREE_TYPE (decl); | |
9002 | add_type_attribute (type_die, type, TREE_READONLY (decl), | |
9003 | TREE_THIS_VOLATILE (decl), context_die); | |
a3f97cbb | 9004 | } |
71dfc51f | 9005 | |
a3f97cbb | 9006 | if (DECL_ABSTRACT (decl)) |
a94dbf2c | 9007 | equate_decl_number_to_die (decl, type_die); |
a3f97cbb JW |
9008 | } |
9009 | ||
9010 | /* Generate a type description DIE. */ | |
71dfc51f | 9011 | |
a3f97cbb JW |
9012 | static void |
9013 | gen_type_die (type, context_die) | |
9014 | register tree type; | |
9015 | register dw_die_ref context_die; | |
9016 | { | |
348bb3c7 JM |
9017 | int need_pop; |
9018 | ||
71dfc51f RK |
9019 | if (type == NULL_TREE || type == error_mark_node) |
9020 | return; | |
a3f97cbb | 9021 | |
38e01259 | 9022 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
9023 | this type (i.e. without any const or volatile qualifiers) so get the |
9024 | main variant (i.e. the unqualified version) of this type now. */ | |
9025 | type = type_main_variant (type); | |
9026 | ||
9027 | if (TREE_ASM_WRITTEN (type)) | |
71dfc51f | 9028 | return; |
a3f97cbb | 9029 | |
a94dbf2c JM |
9030 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
9031 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
9032 | { | |
9033 | TREE_ASM_WRITTEN (type) = 1; | |
9034 | gen_decl_die (TYPE_NAME (type), context_die); | |
9035 | return; | |
9036 | } | |
9037 | ||
a3f97cbb JW |
9038 | switch (TREE_CODE (type)) |
9039 | { | |
9040 | case ERROR_MARK: | |
9041 | break; | |
9042 | ||
9043 | case POINTER_TYPE: | |
9044 | case REFERENCE_TYPE: | |
956d6950 JL |
9045 | /* We must set TREE_ASM_WRITTEN in case this is a recursive type. This |
9046 | ensures that the gen_type_die recursion will terminate even if the | |
9047 | type is recursive. Recursive types are possible in Ada. */ | |
9048 | /* ??? We could perhaps do this for all types before the switch | |
9049 | statement. */ | |
9050 | TREE_ASM_WRITTEN (type) = 1; | |
9051 | ||
a3f97cbb JW |
9052 | /* For these types, all that is required is that we output a DIE (or a |
9053 | set of DIEs) to represent the "basis" type. */ | |
9054 | gen_type_die (TREE_TYPE (type), context_die); | |
9055 | break; | |
9056 | ||
9057 | case OFFSET_TYPE: | |
71dfc51f RK |
9058 | /* This code is used for C++ pointer-to-data-member types. |
9059 | Output a description of the relevant class type. */ | |
a3f97cbb | 9060 | gen_type_die (TYPE_OFFSET_BASETYPE (type), context_die); |
71dfc51f | 9061 | |
a3f97cbb JW |
9062 | /* Output a description of the type of the object pointed to. */ |
9063 | gen_type_die (TREE_TYPE (type), context_die); | |
71dfc51f | 9064 | |
a3f97cbb JW |
9065 | /* Now output a DIE to represent this pointer-to-data-member type |
9066 | itself. */ | |
9067 | gen_ptr_to_mbr_type_die (type, context_die); | |
9068 | break; | |
9069 | ||
9070 | case SET_TYPE: | |
9071 | gen_type_die (TYPE_DOMAIN (type), context_die); | |
9072 | gen_set_type_die (type, context_die); | |
9073 | break; | |
9074 | ||
9075 | case FILE_TYPE: | |
9076 | gen_type_die (TREE_TYPE (type), context_die); | |
9077 | abort (); /* No way to represent these in Dwarf yet! */ | |
9078 | break; | |
9079 | ||
9080 | case FUNCTION_TYPE: | |
9081 | /* Force out return type (in case it wasn't forced out already). */ | |
9082 | gen_type_die (TREE_TYPE (type), context_die); | |
9083 | gen_subroutine_type_die (type, context_die); | |
9084 | break; | |
9085 | ||
9086 | case METHOD_TYPE: | |
9087 | /* Force out return type (in case it wasn't forced out already). */ | |
9088 | gen_type_die (TREE_TYPE (type), context_die); | |
9089 | gen_subroutine_type_die (type, context_die); | |
9090 | break; | |
9091 | ||
9092 | case ARRAY_TYPE: | |
9093 | if (TYPE_STRING_FLAG (type) && TREE_CODE (TREE_TYPE (type)) == CHAR_TYPE) | |
9094 | { | |
9095 | gen_type_die (TREE_TYPE (type), context_die); | |
9096 | gen_string_type_die (type, context_die); | |
9097 | } | |
9098 | else | |
71dfc51f | 9099 | gen_array_type_die (type, context_die); |
a3f97cbb JW |
9100 | break; |
9101 | ||
9102 | case ENUMERAL_TYPE: | |
9103 | case RECORD_TYPE: | |
9104 | case UNION_TYPE: | |
9105 | case QUAL_UNION_TYPE: | |
a082c85a | 9106 | /* If this is a nested type whose containing class hasn't been |
348bb3c7 JM |
9107 | written out yet, writing it out will cover this one, too. |
9108 | This does not apply to instantiations of member class templates; | |
9109 | they need to be added to the containing class as they are | |
9110 | generated. FIXME: This breaks the idea of combining type decls | |
9111 | from multiple TUs, since we can't predict what set of template | |
9112 | instantiations we'll get. */ | |
a082c85a | 9113 | if (TYPE_CONTEXT (type) |
5f2f160c | 9114 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type)) |
a082c85a | 9115 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) |
a94dbf2c JM |
9116 | { |
9117 | gen_type_die (TYPE_CONTEXT (type), context_die); | |
9118 | ||
348bb3c7 | 9119 | if (TREE_ASM_WRITTEN (type)) |
a94dbf2c JM |
9120 | return; |
9121 | ||
9122 | /* If that failed, attach ourselves to the stub. */ | |
9123 | push_decl_scope (TYPE_CONTEXT (type)); | |
9124 | context_die = lookup_type_die (TYPE_CONTEXT (type)); | |
348bb3c7 | 9125 | need_pop = 1; |
a94dbf2c | 9126 | } |
348bb3c7 JM |
9127 | else |
9128 | need_pop = 0; | |
a94dbf2c JM |
9129 | |
9130 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
273dbe67 | 9131 | gen_enumeration_type_die (type, context_die); |
a3f97cbb | 9132 | else |
273dbe67 | 9133 | gen_struct_or_union_type_die (type, context_die); |
4b674448 | 9134 | |
348bb3c7 | 9135 | if (need_pop) |
a94dbf2c JM |
9136 | pop_decl_scope (); |
9137 | ||
4b674448 | 9138 | /* Don't set TREE_ASM_WRITTEN on an incomplete struct; we want to fix |
a082c85a JM |
9139 | it up if it is ever completed. gen_*_type_die will set it for us |
9140 | when appropriate. */ | |
9141 | return; | |
a3f97cbb JW |
9142 | |
9143 | case VOID_TYPE: | |
9144 | case INTEGER_TYPE: | |
9145 | case REAL_TYPE: | |
9146 | case COMPLEX_TYPE: | |
9147 | case BOOLEAN_TYPE: | |
9148 | case CHAR_TYPE: | |
9149 | /* No DIEs needed for fundamental types. */ | |
9150 | break; | |
9151 | ||
9152 | case LANG_TYPE: | |
9153 | /* No Dwarf representation currently defined. */ | |
9154 | break; | |
9155 | ||
9156 | default: | |
9157 | abort (); | |
9158 | } | |
9159 | ||
9160 | TREE_ASM_WRITTEN (type) = 1; | |
9161 | } | |
9162 | ||
9163 | /* Generate a DIE for a tagged type instantiation. */ | |
71dfc51f | 9164 | |
a3f97cbb JW |
9165 | static void |
9166 | gen_tagged_type_instantiation_die (type, context_die) | |
9167 | register tree type; | |
9168 | register dw_die_ref context_die; | |
9169 | { | |
71dfc51f RK |
9170 | if (type == NULL_TREE || type == error_mark_node) |
9171 | return; | |
a3f97cbb | 9172 | |
38e01259 | 9173 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
9174 | this type (i.e. without any const or volatile qualifiers) so make sure |
9175 | that we have the main variant (i.e. the unqualified version) of this | |
9176 | type now. */ | |
bbc6ae08 | 9177 | if (type != type_main_variant (type)) |
3a88cbd1 | 9178 | abort (); |
a3f97cbb | 9179 | |
bbc6ae08 NC |
9180 | /* Do not check TREE_ASM_WRITTEN(type) as it may not be set if this is |
9181 | an instance of an unresolved type. */ | |
9182 | ||
a3f97cbb JW |
9183 | switch (TREE_CODE (type)) |
9184 | { | |
9185 | case ERROR_MARK: | |
9186 | break; | |
9187 | ||
9188 | case ENUMERAL_TYPE: | |
9189 | gen_inlined_enumeration_type_die (type, context_die); | |
9190 | break; | |
9191 | ||
9192 | case RECORD_TYPE: | |
9193 | gen_inlined_structure_type_die (type, context_die); | |
9194 | break; | |
9195 | ||
9196 | case UNION_TYPE: | |
9197 | case QUAL_UNION_TYPE: | |
9198 | gen_inlined_union_type_die (type, context_die); | |
9199 | break; | |
9200 | ||
9201 | default: | |
71dfc51f | 9202 | abort (); |
a3f97cbb JW |
9203 | } |
9204 | } | |
9205 | ||
9206 | /* Generate a DW_TAG_lexical_block DIE followed by DIEs to represent all of the | |
9207 | things which are local to the given block. */ | |
71dfc51f | 9208 | |
a3f97cbb | 9209 | static void |
d7248bff | 9210 | gen_block_die (stmt, context_die, depth) |
a3f97cbb JW |
9211 | register tree stmt; |
9212 | register dw_die_ref context_die; | |
d7248bff | 9213 | int depth; |
a3f97cbb JW |
9214 | { |
9215 | register int must_output_die = 0; | |
9216 | register tree origin; | |
9217 | register tree decl; | |
9218 | register enum tree_code origin_code; | |
9219 | ||
9220 | /* Ignore blocks never really used to make RTL. */ | |
9221 | ||
71dfc51f RK |
9222 | if (stmt == NULL_TREE || !TREE_USED (stmt)) |
9223 | return; | |
a3f97cbb JW |
9224 | |
9225 | /* Determine the "ultimate origin" of this block. This block may be an | |
9226 | inlined instance of an inlined instance of inline function, so we have | |
9227 | to trace all of the way back through the origin chain to find out what | |
9228 | sort of node actually served as the original seed for the creation of | |
9229 | the current block. */ | |
9230 | origin = block_ultimate_origin (stmt); | |
9231 | origin_code = (origin != NULL) ? TREE_CODE (origin) : ERROR_MARK; | |
9232 | ||
9233 | /* Determine if we need to output any Dwarf DIEs at all to represent this | |
9234 | block. */ | |
9235 | if (origin_code == FUNCTION_DECL) | |
71dfc51f RK |
9236 | /* The outer scopes for inlinings *must* always be represented. We |
9237 | generate DW_TAG_inlined_subroutine DIEs for them. (See below.) */ | |
9238 | must_output_die = 1; | |
a3f97cbb JW |
9239 | else |
9240 | { | |
9241 | /* In the case where the current block represents an inlining of the | |
9242 | "body block" of an inline function, we must *NOT* output any DIE for | |
9243 | this block because we have already output a DIE to represent the | |
9244 | whole inlined function scope and the "body block" of any function | |
9245 | doesn't really represent a different scope according to ANSI C | |
9246 | rules. So we check here to make sure that this block does not | |
9247 | represent a "body block inlining" before trying to set the | |
9248 | `must_output_die' flag. */ | |
d7248bff | 9249 | if (! is_body_block (origin ? origin : stmt)) |
a3f97cbb JW |
9250 | { |
9251 | /* Determine if this block directly contains any "significant" | |
9252 | local declarations which we will need to output DIEs for. */ | |
9253 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
71dfc51f RK |
9254 | /* We are not in terse mode so *any* local declaration counts |
9255 | as being a "significant" one. */ | |
9256 | must_output_die = (BLOCK_VARS (stmt) != NULL); | |
a3f97cbb | 9257 | else |
71dfc51f RK |
9258 | /* We are in terse mode, so only local (nested) function |
9259 | definitions count as "significant" local declarations. */ | |
9260 | for (decl = BLOCK_VARS (stmt); | |
9261 | decl != NULL; decl = TREE_CHAIN (decl)) | |
9262 | if (TREE_CODE (decl) == FUNCTION_DECL | |
9263 | && DECL_INITIAL (decl)) | |
a3f97cbb | 9264 | { |
71dfc51f RK |
9265 | must_output_die = 1; |
9266 | break; | |
a3f97cbb | 9267 | } |
a3f97cbb JW |
9268 | } |
9269 | } | |
9270 | ||
9271 | /* It would be a waste of space to generate a Dwarf DW_TAG_lexical_block | |
9272 | DIE for any block which contains no significant local declarations at | |
9273 | all. Rather, in such cases we just call `decls_for_scope' so that any | |
9274 | needed Dwarf info for any sub-blocks will get properly generated. Note | |
9275 | that in terse mode, our definition of what constitutes a "significant" | |
9276 | local declaration gets restricted to include only inlined function | |
9277 | instances and local (nested) function definitions. */ | |
9278 | if (must_output_die) | |
9279 | { | |
9280 | if (origin_code == FUNCTION_DECL) | |
71dfc51f | 9281 | gen_inlined_subroutine_die (stmt, context_die, depth); |
a3f97cbb | 9282 | else |
71dfc51f | 9283 | gen_lexical_block_die (stmt, context_die, depth); |
a3f97cbb JW |
9284 | } |
9285 | else | |
d7248bff | 9286 | decls_for_scope (stmt, context_die, depth); |
a3f97cbb JW |
9287 | } |
9288 | ||
9289 | /* Generate all of the decls declared within a given scope and (recursively) | |
9ec36da5 | 9290 | all of its sub-blocks. */ |
71dfc51f | 9291 | |
a3f97cbb | 9292 | static void |
d7248bff | 9293 | decls_for_scope (stmt, context_die, depth) |
a3f97cbb JW |
9294 | register tree stmt; |
9295 | register dw_die_ref context_die; | |
d7248bff | 9296 | int depth; |
a3f97cbb JW |
9297 | { |
9298 | register tree decl; | |
9299 | register tree subblocks; | |
71dfc51f | 9300 | |
a3f97cbb | 9301 | /* Ignore blocks never really used to make RTL. */ |
71dfc51f RK |
9302 | if (stmt == NULL_TREE || ! TREE_USED (stmt)) |
9303 | return; | |
9304 | ||
d7248bff | 9305 | if (!BLOCK_ABSTRACT (stmt) && depth > 0) |
71dfc51f | 9306 | next_block_number++; |
a3f97cbb | 9307 | |
88dad228 JM |
9308 | /* Output the DIEs to represent all of the data objects and typedefs |
9309 | declared directly within this block but not within any nested | |
9310 | sub-blocks. Also, nested function and tag DIEs have been | |
9311 | generated with a parent of NULL; fix that up now. */ | |
a3f97cbb JW |
9312 | for (decl = BLOCK_VARS (stmt); |
9313 | decl != NULL; decl = TREE_CHAIN (decl)) | |
9314 | { | |
a94dbf2c JM |
9315 | register dw_die_ref die; |
9316 | ||
88dad228 | 9317 | if (TREE_CODE (decl) == FUNCTION_DECL) |
a94dbf2c | 9318 | die = lookup_decl_die (decl); |
88dad228 | 9319 | else if (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl)) |
a94dbf2c JM |
9320 | die = lookup_type_die (TREE_TYPE (decl)); |
9321 | else | |
9322 | die = NULL; | |
9323 | ||
71dfc51f | 9324 | if (die != NULL && die->die_parent == NULL) |
ef76d03b | 9325 | add_child_die (context_die, die); |
88dad228 JM |
9326 | else |
9327 | gen_decl_die (decl, context_die); | |
a3f97cbb JW |
9328 | } |
9329 | ||
9330 | /* Output the DIEs to represent all sub-blocks (and the items declared | |
9331 | therein) of this block. */ | |
9332 | for (subblocks = BLOCK_SUBBLOCKS (stmt); | |
9333 | subblocks != NULL; | |
9334 | subblocks = BLOCK_CHAIN (subblocks)) | |
71dfc51f | 9335 | gen_block_die (subblocks, context_die, depth + 1); |
a3f97cbb JW |
9336 | } |
9337 | ||
a94dbf2c | 9338 | /* Is this a typedef we can avoid emitting? */ |
71dfc51f RK |
9339 | |
9340 | static inline int | |
a94dbf2c JM |
9341 | is_redundant_typedef (decl) |
9342 | register tree decl; | |
9343 | { | |
9344 | if (TYPE_DECL_IS_STUB (decl)) | |
9345 | return 1; | |
71dfc51f | 9346 | |
a94dbf2c JM |
9347 | if (DECL_ARTIFICIAL (decl) |
9348 | && DECL_CONTEXT (decl) | |
9349 | && is_tagged_type (DECL_CONTEXT (decl)) | |
9350 | && TREE_CODE (TYPE_NAME (DECL_CONTEXT (decl))) == TYPE_DECL | |
9351 | && DECL_NAME (decl) == DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))) | |
9352 | /* Also ignore the artificial member typedef for the class name. */ | |
9353 | return 1; | |
71dfc51f | 9354 | |
a94dbf2c JM |
9355 | return 0; |
9356 | } | |
9357 | ||
a3f97cbb | 9358 | /* Generate Dwarf debug information for a decl described by DECL. */ |
71dfc51f | 9359 | |
a3f97cbb JW |
9360 | static void |
9361 | gen_decl_die (decl, context_die) | |
9362 | register tree decl; | |
9363 | register dw_die_ref context_die; | |
9364 | { | |
9365 | register tree origin; | |
71dfc51f | 9366 | |
a3f97cbb | 9367 | if (TREE_CODE (decl) == ERROR_MARK) |
71dfc51f | 9368 | return; |
a3f97cbb JW |
9369 | |
9370 | /* If this ..._DECL node is marked to be ignored, then ignore it. But don't | |
9371 | ignore a function definition, since that would screw up our count of | |
38e01259 | 9372 | blocks, and that in turn will completely screw up the labels we will |
a3f97cbb JW |
9373 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for |
9374 | subsequent blocks). */ | |
9375 | if (DECL_IGNORED_P (decl) && TREE_CODE (decl) != FUNCTION_DECL) | |
71dfc51f | 9376 | return; |
a3f97cbb | 9377 | |
a3f97cbb JW |
9378 | switch (TREE_CODE (decl)) |
9379 | { | |
9380 | case CONST_DECL: | |
9381 | /* The individual enumerators of an enum type get output when we output | |
9382 | the Dwarf representation of the relevant enum type itself. */ | |
9383 | break; | |
9384 | ||
9385 | case FUNCTION_DECL: | |
4edb7b60 JM |
9386 | /* Don't output any DIEs to represent mere function declarations, |
9387 | unless they are class members or explicit block externs. */ | |
9388 | if (DECL_INITIAL (decl) == NULL_TREE && DECL_CONTEXT (decl) == NULL_TREE | |
9389 | && (current_function_decl == NULL_TREE || ! DECL_ARTIFICIAL (decl))) | |
71dfc51f | 9390 | break; |
bdb669cb | 9391 | |
4927276d | 9392 | if (debug_info_level > DINFO_LEVEL_TERSE) |
a94dbf2c JM |
9393 | { |
9394 | /* Before we describe the FUNCTION_DECL itself, make sure that we | |
9395 | have described its return type. */ | |
9396 | gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die); | |
9397 | ||
9398 | /* And its containing type. */ | |
9399 | origin = decl_class_context (decl); | |
71dfc51f | 9400 | if (origin != NULL_TREE) |
a94dbf2c JM |
9401 | gen_type_die (origin, context_die); |
9402 | ||
9403 | /* And its virtual context. */ | |
71dfc51f | 9404 | if (DECL_VINDEX (decl) != NULL_TREE) |
a94dbf2c JM |
9405 | gen_type_die (DECL_CONTEXT (decl), context_die); |
9406 | } | |
a3f97cbb JW |
9407 | |
9408 | /* Now output a DIE to represent the function itself. */ | |
9409 | gen_subprogram_die (decl, context_die); | |
9410 | break; | |
9411 | ||
9412 | case TYPE_DECL: | |
9413 | /* If we are in terse mode, don't generate any DIEs to represent any | |
4927276d | 9414 | actual typedefs. */ |
a3f97cbb | 9415 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 9416 | break; |
a3f97cbb | 9417 | |
5c90448c JM |
9418 | /* In the special case of a TYPE_DECL node representing the |
9419 | declaration of some type tag, if the given TYPE_DECL is marked as | |
a3f97cbb JW |
9420 | having been instantiated from some other (original) TYPE_DECL node |
9421 | (e.g. one which was generated within the original definition of an | |
9422 | inline function) we have to generate a special (abbreviated) | |
ef76d03b | 9423 | DW_TAG_structure_type, DW_TAG_union_type, or DW_TAG_enumeration_type |
a3f97cbb | 9424 | DIE here. */ |
71dfc51f | 9425 | if (TYPE_DECL_IS_STUB (decl) && DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE) |
a3f97cbb JW |
9426 | { |
9427 | gen_tagged_type_instantiation_die (TREE_TYPE (decl), context_die); | |
9428 | break; | |
9429 | } | |
a3f97cbb | 9430 | |
a94dbf2c JM |
9431 | if (is_redundant_typedef (decl)) |
9432 | gen_type_die (TREE_TYPE (decl), context_die); | |
9433 | else | |
71dfc51f RK |
9434 | /* Output a DIE to represent the typedef itself. */ |
9435 | gen_typedef_die (decl, context_die); | |
a3f97cbb JW |
9436 | break; |
9437 | ||
9438 | case LABEL_DECL: | |
9439 | if (debug_info_level >= DINFO_LEVEL_NORMAL) | |
71dfc51f | 9440 | gen_label_die (decl, context_die); |
a3f97cbb JW |
9441 | break; |
9442 | ||
9443 | case VAR_DECL: | |
9444 | /* If we are in terse mode, don't generate any DIEs to represent any | |
9445 | variable declarations or definitions. */ | |
9446 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 9447 | break; |
a3f97cbb JW |
9448 | |
9449 | /* Output any DIEs that are needed to specify the type of this data | |
9450 | object. */ | |
9451 | gen_type_die (TREE_TYPE (decl), context_die); | |
9452 | ||
a94dbf2c JM |
9453 | /* And its containing type. */ |
9454 | origin = decl_class_context (decl); | |
71dfc51f | 9455 | if (origin != NULL_TREE) |
a94dbf2c JM |
9456 | gen_type_die (origin, context_die); |
9457 | ||
a3f97cbb JW |
9458 | /* Now output the DIE to represent the data object itself. This gets |
9459 | complicated because of the possibility that the VAR_DECL really | |
9460 | represents an inlined instance of a formal parameter for an inline | |
9461 | function. */ | |
9462 | origin = decl_ultimate_origin (decl); | |
71dfc51f RK |
9463 | if (origin != NULL_TREE && TREE_CODE (origin) == PARM_DECL) |
9464 | gen_formal_parameter_die (decl, context_die); | |
a3f97cbb | 9465 | else |
71dfc51f | 9466 | gen_variable_die (decl, context_die); |
a3f97cbb JW |
9467 | break; |
9468 | ||
9469 | case FIELD_DECL: | |
a94dbf2c JM |
9470 | /* Ignore the nameless fields that are used to skip bits, but |
9471 | handle C++ anonymous unions. */ | |
71dfc51f RK |
9472 | if (DECL_NAME (decl) != NULL_TREE |
9473 | || TREE_CODE (TREE_TYPE (decl)) == UNION_TYPE) | |
a3f97cbb JW |
9474 | { |
9475 | gen_type_die (member_declared_type (decl), context_die); | |
9476 | gen_field_die (decl, context_die); | |
9477 | } | |
9478 | break; | |
9479 | ||
9480 | case PARM_DECL: | |
9481 | gen_type_die (TREE_TYPE (decl), context_die); | |
9482 | gen_formal_parameter_die (decl, context_die); | |
9483 | break; | |
9484 | ||
348bb3c7 JM |
9485 | case NAMESPACE_DECL: |
9486 | /* Ignore for now. */ | |
9487 | break; | |
9488 | ||
a3f97cbb JW |
9489 | default: |
9490 | abort (); | |
9491 | } | |
a3f97cbb JW |
9492 | } |
9493 | \f | |
14a774a9 RK |
9494 | /* Add Ada "use" clause information for SGI Workshop debugger. */ |
9495 | ||
9496 | void | |
9497 | dwarf2out_add_library_unit_info (filename, context_list) | |
9498 | char *filename; | |
9499 | char *context_list; | |
9500 | { | |
9501 | unsigned int file_index; | |
9502 | ||
9503 | if (filename != NULL) | |
9504 | { | |
9505 | dw_die_ref unit_die = new_die (DW_TAG_module, comp_unit_die); | |
9506 | tree context_list_decl | |
9507 | = build_decl (LABEL_DECL, get_identifier (context_list), | |
9508 | void_type_node); | |
9509 | ||
9510 | TREE_PUBLIC (context_list_decl) = TRUE; | |
9511 | add_name_attribute (unit_die, context_list); | |
9512 | file_index = lookup_filename (filename); | |
9513 | add_AT_unsigned (unit_die, DW_AT_decl_file, file_index); | |
9514 | add_pubname (context_list_decl, unit_die); | |
9515 | } | |
9516 | } | |
9517 | ||
71dfc51f RK |
9518 | /* Write the debugging output for DECL. */ |
9519 | ||
a3f97cbb | 9520 | void |
88dad228 | 9521 | dwarf2out_decl (decl) |
a3f97cbb | 9522 | register tree decl; |
a3f97cbb | 9523 | { |
88dad228 JM |
9524 | register dw_die_ref context_die = comp_unit_die; |
9525 | ||
a3f97cbb | 9526 | if (TREE_CODE (decl) == ERROR_MARK) |
71dfc51f | 9527 | return; |
a3f97cbb JW |
9528 | |
9529 | /* If this ..._DECL node is marked to be ignored, then ignore it. We gotta | |
9530 | hope that the node in question doesn't represent a function definition. | |
9531 | If it does, then totally ignoring it is bound to screw up our count of | |
38e01259 | 9532 | blocks, and that in turn will completely screw up the labels we will |
a3f97cbb JW |
9533 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for |
9534 | subsequent blocks). (It's too bad that BLOCK nodes don't carry their | |
9535 | own sequence numbers with them!) */ | |
9536 | if (DECL_IGNORED_P (decl)) | |
9537 | { | |
9538 | if (TREE_CODE (decl) == FUNCTION_DECL | |
02e24c7a | 9539 | && DECL_INITIAL (decl) != NULL) |
71dfc51f RK |
9540 | abort (); |
9541 | ||
a3f97cbb JW |
9542 | return; |
9543 | } | |
9544 | ||
9545 | switch (TREE_CODE (decl)) | |
9546 | { | |
9547 | case FUNCTION_DECL: | |
9548 | /* Ignore this FUNCTION_DECL if it refers to a builtin declaration of a | |
9549 | builtin function. Explicit programmer-supplied declarations of | |
9550 | these same functions should NOT be ignored however. */ | |
9551 | if (DECL_EXTERNAL (decl) && DECL_FUNCTION_CODE (decl)) | |
b1ccbc24 | 9552 | return; |
a3f97cbb JW |
9553 | |
9554 | /* What we would really like to do here is to filter out all mere | |
9555 | file-scope declarations of file-scope functions which are never | |
9556 | referenced later within this translation unit (and keep all of ones | |
956d6950 | 9557 | that *are* referenced later on) but we aren't clairvoyant, so we have |
a3f97cbb JW |
9558 | no idea which functions will be referenced in the future (i.e. later |
9559 | on within the current translation unit). So here we just ignore all | |
9560 | file-scope function declarations which are not also definitions. If | |
956d6950 | 9561 | and when the debugger needs to know something about these functions, |
bbc6ae08 NC |
9562 | it will have to hunt around and find the DWARF information associated |
9563 | with the definition of the function. Note that we can't just check | |
a3f97cbb JW |
9564 | `DECL_EXTERNAL' to find out which FUNCTION_DECL nodes represent |
9565 | definitions and which ones represent mere declarations. We have to | |
9566 | check `DECL_INITIAL' instead. That's because the C front-end | |
9567 | supports some weird semantics for "extern inline" function | |
9568 | definitions. These can get inlined within the current translation | |
9569 | unit (an thus, we need to generate DWARF info for their abstract | |
9570 | instances so that the DWARF info for the concrete inlined instances | |
9571 | can have something to refer to) but the compiler never generates any | |
9572 | out-of-lines instances of such things (despite the fact that they | |
9573 | *are* definitions). The important point is that the C front-end | |
9574 | marks these "extern inline" functions as DECL_EXTERNAL, but we need | |
273dbe67 | 9575 | to generate DWARF for them anyway. Note that the C++ front-end also |
a3f97cbb JW |
9576 | plays some similar games for inline function definitions appearing |
9577 | within include files which also contain | |
9578 | `#pragma interface' pragmas. */ | |
9579 | if (DECL_INITIAL (decl) == NULL_TREE) | |
b1ccbc24 | 9580 | return; |
88dad228 | 9581 | |
9c6cd30e JM |
9582 | /* If we're a nested function, initially use a parent of NULL; if we're |
9583 | a plain function, this will be fixed up in decls_for_scope. If | |
9584 | we're a method, it will be ignored, since we already have a DIE. */ | |
88dad228 | 9585 | if (decl_function_context (decl)) |
9c6cd30e | 9586 | context_die = NULL; |
88dad228 | 9587 | |
a3f97cbb JW |
9588 | break; |
9589 | ||
9590 | case VAR_DECL: | |
9591 | /* Ignore this VAR_DECL if it refers to a file-scope extern data object | |
9592 | declaration and if the declaration was never even referenced from | |
9593 | within this entire compilation unit. We suppress these DIEs in | |
9594 | order to save space in the .debug section (by eliminating entries | |
9595 | which are probably useless). Note that we must not suppress | |
9596 | block-local extern declarations (whether used or not) because that | |
9597 | would screw-up the debugger's name lookup mechanism and cause it to | |
9598 | miss things which really ought to be in scope at a given point. */ | |
9599 | if (DECL_EXTERNAL (decl) && !TREE_USED (decl)) | |
71dfc51f | 9600 | return; |
a3f97cbb JW |
9601 | |
9602 | /* If we are in terse mode, don't generate any DIEs to represent any | |
9603 | variable declarations or definitions. */ | |
9604 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 9605 | return; |
a3f97cbb JW |
9606 | break; |
9607 | ||
9608 | case TYPE_DECL: | |
9609 | /* Don't bother trying to generate any DIEs to represent any of the | |
a9d38797 JM |
9610 | normal built-in types for the language we are compiling. */ |
9611 | if (DECL_SOURCE_LINE (decl) == 0) | |
a94dbf2c JM |
9612 | { |
9613 | /* OK, we need to generate one for `bool' so GDB knows what type | |
9614 | comparisons have. */ | |
9615 | if ((get_AT_unsigned (comp_unit_die, DW_AT_language) | |
9616 | == DW_LANG_C_plus_plus) | |
9617 | && TREE_CODE (TREE_TYPE (decl)) == BOOLEAN_TYPE) | |
9618 | modified_type_die (TREE_TYPE (decl), 0, 0, NULL); | |
71dfc51f | 9619 | |
a94dbf2c JM |
9620 | return; |
9621 | } | |
a3f97cbb | 9622 | |
88dad228 | 9623 | /* If we are in terse mode, don't generate any DIEs for types. */ |
a3f97cbb | 9624 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 9625 | return; |
88dad228 JM |
9626 | |
9627 | /* If we're a function-scope tag, initially use a parent of NULL; | |
9628 | this will be fixed up in decls_for_scope. */ | |
9629 | if (decl_function_context (decl)) | |
3f76745e | 9630 | context_die = NULL; |
88dad228 | 9631 | |
a3f97cbb JW |
9632 | break; |
9633 | ||
9634 | default: | |
9635 | return; | |
9636 | } | |
9637 | ||
88dad228 | 9638 | gen_decl_die (decl, context_die); |
a94dbf2c | 9639 | output_pending_types_for_scope (comp_unit_die); |
a3f97cbb JW |
9640 | } |
9641 | ||
9642 | /* Output a marker (i.e. a label) for the beginning of the generated code for | |
9643 | a lexical block. */ | |
71dfc51f | 9644 | |
a3f97cbb | 9645 | void |
9a666dda | 9646 | dwarf2out_begin_block (blocknum) |
a3f97cbb JW |
9647 | register unsigned blocknum; |
9648 | { | |
a3f97cbb | 9649 | function_section (current_function_decl); |
5c90448c | 9650 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum); |
a3f97cbb JW |
9651 | } |
9652 | ||
9653 | /* Output a marker (i.e. a label) for the end of the generated code for a | |
9654 | lexical block. */ | |
71dfc51f | 9655 | |
a3f97cbb | 9656 | void |
9a666dda | 9657 | dwarf2out_end_block (blocknum) |
a3f97cbb JW |
9658 | register unsigned blocknum; |
9659 | { | |
a3f97cbb | 9660 | function_section (current_function_decl); |
5c90448c | 9661 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum); |
a3f97cbb JW |
9662 | } |
9663 | ||
9664 | /* Output a marker (i.e. a label) at a point in the assembly code which | |
9665 | corresponds to a given source level label. */ | |
71dfc51f | 9666 | |
a3f97cbb | 9667 | void |
9a666dda | 9668 | dwarf2out_label (insn) |
a3f97cbb JW |
9669 | register rtx insn; |
9670 | { | |
9671 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f | 9672 | |
a3f97cbb JW |
9673 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
9674 | { | |
9675 | function_section (current_function_decl); | |
5c90448c JM |
9676 | sprintf (label, INSN_LABEL_FMT, current_funcdef_number); |
9677 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, label, | |
9678 | (unsigned) INSN_UID (insn)); | |
a3f97cbb JW |
9679 | } |
9680 | } | |
9681 | ||
a3f97cbb | 9682 | /* Lookup a filename (in the list of filenames that we know about here in |
9a666dda | 9683 | dwarf2out.c) and return its "index". The index of each (known) filename is |
a3f97cbb JW |
9684 | just a unique number which is associated with only that one filename. |
9685 | We need such numbers for the sake of generating labels | |
9686 | (in the .debug_sfnames section) and references to those | |
9687 | files numbers (in the .debug_srcinfo and.debug_macinfo sections). | |
9688 | If the filename given as an argument is not found in our current list, | |
9689 | add it to the list and assign it the next available unique index number. | |
9690 | In order to speed up searches, we remember the index of the filename | |
9691 | was looked up last. This handles the majority of all searches. */ | |
71dfc51f | 9692 | |
a3f97cbb JW |
9693 | static unsigned |
9694 | lookup_filename (file_name) | |
d560ee52 | 9695 | const char *file_name; |
a3f97cbb JW |
9696 | { |
9697 | static unsigned last_file_lookup_index = 0; | |
a3f97cbb JW |
9698 | register unsigned i; |
9699 | ||
9700 | /* Check to see if the file name that was searched on the previous call | |
9701 | matches this file name. If so, return the index. */ | |
9702 | if (last_file_lookup_index != 0) | |
71dfc51f RK |
9703 | if (strcmp (file_name, file_table[last_file_lookup_index]) == 0) |
9704 | return last_file_lookup_index; | |
a3f97cbb JW |
9705 | |
9706 | /* Didn't match the previous lookup, search the table */ | |
9707 | for (i = 1; i < file_table_in_use; ++i) | |
71dfc51f RK |
9708 | if (strcmp (file_name, file_table[i]) == 0) |
9709 | { | |
9710 | last_file_lookup_index = i; | |
9711 | return i; | |
9712 | } | |
a3f97cbb JW |
9713 | |
9714 | /* Prepare to add a new table entry by making sure there is enough space in | |
9715 | the table to do so. If not, expand the current table. */ | |
9716 | if (file_table_in_use == file_table_allocated) | |
9717 | { | |
9718 | file_table_allocated += FILE_TABLE_INCREMENT; | |
9719 | file_table | |
71dfc51f RK |
9720 | = (char **) xrealloc (file_table, |
9721 | file_table_allocated * sizeof (char *)); | |
a3f97cbb JW |
9722 | } |
9723 | ||
71dfc51f | 9724 | /* Add the new entry to the end of the filename table. */ |
a3f97cbb JW |
9725 | file_table[file_table_in_use] = xstrdup (file_name); |
9726 | last_file_lookup_index = file_table_in_use++; | |
71dfc51f | 9727 | |
a3f97cbb JW |
9728 | return last_file_lookup_index; |
9729 | } | |
9730 | ||
9731 | /* Output a label to mark the beginning of a source code line entry | |
9732 | and record information relating to this source line, in | |
9733 | 'line_info_table' for later output of the .debug_line section. */ | |
71dfc51f | 9734 | |
a3f97cbb | 9735 | void |
9a666dda | 9736 | dwarf2out_line (filename, line) |
d560ee52 | 9737 | register const char *filename; |
a3f97cbb JW |
9738 | register unsigned line; |
9739 | { | |
a3f97cbb JW |
9740 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
9741 | { | |
9742 | function_section (current_function_decl); | |
a3f97cbb | 9743 | |
b2244e22 JW |
9744 | if (DWARF2_ASM_LINE_DEBUG_INFO) |
9745 | { | |
e2bef702 | 9746 | static const char *lastfile; |
b2244e22 JW |
9747 | |
9748 | /* Emit the .file and .loc directives understood by GNU as. */ | |
9749 | if (lastfile == 0 || strcmp (filename, lastfile)) | |
9750 | { | |
951a525f MM |
9751 | if (lastfile == 0) |
9752 | ggc_add_string_root ((char **) &lastfile, 1); | |
9753 | ||
b2244e22 JW |
9754 | fprintf (asm_out_file, "\t.file 0 \"%s\"\n", filename); |
9755 | lastfile = filename; | |
9756 | } | |
9757 | ||
9758 | fprintf (asm_out_file, "\t.loc 0 %d 0\n", line); | |
9759 | ||
9760 | /* Indicate that line number info exists. */ | |
9761 | ++line_info_table_in_use; | |
9762 | ||
9763 | /* Indicate that multiple line number tables exist. */ | |
9764 | if (DECL_SECTION_NAME (current_function_decl)) | |
9765 | ++separate_line_info_table_in_use; | |
9766 | } | |
9767 | else if (DECL_SECTION_NAME (current_function_decl)) | |
a3f97cbb | 9768 | { |
e90b62db | 9769 | register dw_separate_line_info_ref line_info; |
5c90448c JM |
9770 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, SEPARATE_LINE_CODE_LABEL, |
9771 | separate_line_info_table_in_use); | |
ac260b05 JM |
9772 | if (flag_debug_asm) |
9773 | fprintf (asm_out_file, "\t%s line %d", ASM_COMMENT_START, line); | |
e90b62db JM |
9774 | fputc ('\n', asm_out_file); |
9775 | ||
9776 | /* expand the line info table if necessary */ | |
9777 | if (separate_line_info_table_in_use | |
9778 | == separate_line_info_table_allocated) | |
9779 | { | |
9780 | separate_line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
9781 | separate_line_info_table | |
71dfc51f RK |
9782 | = (dw_separate_line_info_ref) |
9783 | xrealloc (separate_line_info_table, | |
9784 | separate_line_info_table_allocated | |
9785 | * sizeof (dw_separate_line_info_entry)); | |
e90b62db | 9786 | } |
71dfc51f RK |
9787 | |
9788 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
9789 | line_info |
9790 | = &separate_line_info_table[separate_line_info_table_in_use++]; | |
9791 | line_info->dw_file_num = lookup_filename (filename); | |
9792 | line_info->dw_line_num = line; | |
9793 | line_info->function = current_funcdef_number; | |
9794 | } | |
9795 | else | |
9796 | { | |
9797 | register dw_line_info_ref line_info; | |
71dfc51f | 9798 | |
5c90448c JM |
9799 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, LINE_CODE_LABEL, |
9800 | line_info_table_in_use); | |
ac260b05 JM |
9801 | if (flag_debug_asm) |
9802 | fprintf (asm_out_file, "\t%s line %d", ASM_COMMENT_START, line); | |
e90b62db JM |
9803 | fputc ('\n', asm_out_file); |
9804 | ||
71dfc51f | 9805 | /* Expand the line info table if necessary. */ |
e90b62db JM |
9806 | if (line_info_table_in_use == line_info_table_allocated) |
9807 | { | |
9808 | line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
9809 | line_info_table | |
71dfc51f RK |
9810 | = (dw_line_info_ref) |
9811 | xrealloc (line_info_table, | |
9812 | (line_info_table_allocated | |
9813 | * sizeof (dw_line_info_entry))); | |
e90b62db | 9814 | } |
71dfc51f RK |
9815 | |
9816 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
9817 | line_info = &line_info_table[line_info_table_in_use++]; |
9818 | line_info->dw_file_num = lookup_filename (filename); | |
9819 | line_info->dw_line_num = line; | |
a3f97cbb | 9820 | } |
a3f97cbb JW |
9821 | } |
9822 | } | |
9823 | ||
9824 | /* Record the beginning of a new source file, for later output | |
9825 | of the .debug_macinfo section. At present, unimplemented. */ | |
71dfc51f | 9826 | |
a3f97cbb | 9827 | void |
9a666dda | 9828 | dwarf2out_start_source_file (filename) |
d560ee52 | 9829 | register const char *filename ATTRIBUTE_UNUSED; |
a3f97cbb JW |
9830 | { |
9831 | } | |
9832 | ||
9a666dda | 9833 | /* Record the end of a source file, for later output |
a3f97cbb | 9834 | of the .debug_macinfo section. At present, unimplemented. */ |
71dfc51f | 9835 | |
a3f97cbb | 9836 | void |
9a666dda | 9837 | dwarf2out_end_source_file () |
a3f97cbb JW |
9838 | { |
9839 | } | |
9840 | ||
9841 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
9842 | the tail part of the directive line, i.e. the part which is past the | |
9843 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 9844 | |
a3f97cbb | 9845 | void |
9a666dda | 9846 | dwarf2out_define (lineno, buffer) |
2618f955 | 9847 | register unsigned lineno ATTRIBUTE_UNUSED; |
d560ee52 | 9848 | register const char *buffer ATTRIBUTE_UNUSED; |
a3f97cbb JW |
9849 | { |
9850 | static int initialized = 0; | |
9851 | if (!initialized) | |
9852 | { | |
9a666dda | 9853 | dwarf2out_start_source_file (primary_filename); |
a3f97cbb JW |
9854 | initialized = 1; |
9855 | } | |
9856 | } | |
9857 | ||
9858 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
9859 | the tail part of the directive line, i.e. the part which is past the | |
9860 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 9861 | |
a3f97cbb | 9862 | void |
9a666dda | 9863 | dwarf2out_undef (lineno, buffer) |
487a6e06 | 9864 | register unsigned lineno ATTRIBUTE_UNUSED; |
d560ee52 | 9865 | register const char *buffer ATTRIBUTE_UNUSED; |
a3f97cbb JW |
9866 | { |
9867 | } | |
9868 | ||
9869 | /* Set up for Dwarf output at the start of compilation. */ | |
71dfc51f | 9870 | |
a3f97cbb | 9871 | void |
9a666dda | 9872 | dwarf2out_init (asm_out_file, main_input_filename) |
a3f97cbb JW |
9873 | register FILE *asm_out_file; |
9874 | register char *main_input_filename; | |
9875 | { | |
a3f97cbb JW |
9876 | /* Remember the name of the primary input file. */ |
9877 | primary_filename = main_input_filename; | |
9878 | ||
9879 | /* Allocate the initial hunk of the file_table. */ | |
3de90026 | 9880 | file_table = (char **) xcalloc (FILE_TABLE_INCREMENT, sizeof (char *)); |
a3f97cbb | 9881 | file_table_allocated = FILE_TABLE_INCREMENT; |
71dfc51f RK |
9882 | |
9883 | /* Skip the first entry - file numbers begin at 1. */ | |
a3f97cbb JW |
9884 | file_table_in_use = 1; |
9885 | ||
a3f97cbb JW |
9886 | /* Allocate the initial hunk of the decl_die_table. */ |
9887 | decl_die_table | |
3de90026 | 9888 | = (dw_die_ref *) xcalloc (DECL_DIE_TABLE_INCREMENT, sizeof (dw_die_ref)); |
a3f97cbb JW |
9889 | decl_die_table_allocated = DECL_DIE_TABLE_INCREMENT; |
9890 | decl_die_table_in_use = 0; | |
9891 | ||
9892 | /* Allocate the initial hunk of the decl_scope_table. */ | |
9893 | decl_scope_table | |
3de90026 RH |
9894 | = (decl_scope_node *) xcalloc (DECL_SCOPE_TABLE_INCREMENT, |
9895 | sizeof (decl_scope_node)); | |
a3f97cbb JW |
9896 | decl_scope_table_allocated = DECL_SCOPE_TABLE_INCREMENT; |
9897 | decl_scope_depth = 0; | |
9898 | ||
9899 | /* Allocate the initial hunk of the abbrev_die_table. */ | |
9900 | abbrev_die_table | |
3de90026 RH |
9901 | = (dw_die_ref *) xcalloc (ABBREV_DIE_TABLE_INCREMENT, |
9902 | sizeof (dw_die_ref)); | |
a3f97cbb | 9903 | abbrev_die_table_allocated = ABBREV_DIE_TABLE_INCREMENT; |
71dfc51f | 9904 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
9905 | abbrev_die_table_in_use = 1; |
9906 | ||
9907 | /* Allocate the initial hunk of the line_info_table. */ | |
9908 | line_info_table | |
3de90026 RH |
9909 | = (dw_line_info_ref) xcalloc (LINE_INFO_TABLE_INCREMENT, |
9910 | sizeof (dw_line_info_entry)); | |
a3f97cbb | 9911 | line_info_table_allocated = LINE_INFO_TABLE_INCREMENT; |
71dfc51f | 9912 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
9913 | line_info_table_in_use = 1; |
9914 | ||
a3f97cbb JW |
9915 | /* Generate the initial DIE for the .debug section. Note that the (string) |
9916 | value given in the DW_AT_name attribute of the DW_TAG_compile_unit DIE | |
9917 | will (typically) be a relative pathname and that this pathname should be | |
9918 | taken as being relative to the directory from which the compiler was | |
9919 | invoked when the given (base) source file was compiled. */ | |
a96c67ec | 9920 | comp_unit_die = gen_compile_unit_die (main_input_filename); |
a3f97cbb | 9921 | |
5c90448c | 9922 | ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0); |
8b790721 | 9923 | ASM_GENERATE_INTERNAL_LABEL (abbrev_section_label, ABBREV_SECTION_LABEL, 0); |
b366352b MM |
9924 | if (DWARF2_GENERATE_TEXT_SECTION_LABEL) |
9925 | ASM_GENERATE_INTERNAL_LABEL (text_section_label, TEXT_SECTION_LABEL, 0); | |
9926 | else | |
9927 | strcpy (text_section_label, stripattributes (TEXT_SECTION)); | |
8b790721 JM |
9928 | ASM_GENERATE_INTERNAL_LABEL (debug_info_section_label, |
9929 | DEBUG_INFO_SECTION_LABEL, 0); | |
9930 | ASM_GENERATE_INTERNAL_LABEL (debug_line_section_label, | |
9931 | DEBUG_LINE_SECTION_LABEL, 0); | |
9932 | ||
9933 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
9934 | ASM_OUTPUT_LABEL (asm_out_file, abbrev_section_label); | |
b366352b | 9935 | if (DWARF2_GENERATE_TEXT_SECTION_LABEL) |
a96c67ec JM |
9936 | { |
9937 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
9938 | ASM_OUTPUT_LABEL (asm_out_file, text_section_label); | |
9939 | } | |
8b790721 JM |
9940 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_INFO_SECTION); |
9941 | ASM_OUTPUT_LABEL (asm_out_file, debug_info_section_label); | |
9942 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION); | |
9943 | ASM_OUTPUT_LABEL (asm_out_file, debug_line_section_label); | |
a3f97cbb JW |
9944 | } |
9945 | ||
9946 | /* Output stuff that dwarf requires at the end of every file, | |
9947 | and generate the DWARF-2 debugging info. */ | |
71dfc51f | 9948 | |
a3f97cbb | 9949 | void |
9a666dda | 9950 | dwarf2out_finish () |
a3f97cbb | 9951 | { |
ef76d03b JW |
9952 | limbo_die_node *node, *next_node; |
9953 | dw_die_ref die; | |
ef76d03b JW |
9954 | |
9955 | /* Traverse the limbo die list, and add parent/child links. The only | |
9956 | dies without parents that should be here are concrete instances of | |
9957 | inline functions, and the comp_unit_die. We can ignore the comp_unit_die. | |
9958 | For concrete instances, we can get the parent die from the abstract | |
9959 | instance. */ | |
9960 | for (node = limbo_die_list; node; node = next_node) | |
9961 | { | |
9962 | next_node = node->next; | |
9963 | die = node->die; | |
9964 | ||
9965 | if (die->die_parent == NULL) | |
9966 | { | |
a96c67ec JM |
9967 | dw_die_ref origin = get_AT_ref (die, DW_AT_abstract_origin); |
9968 | if (origin) | |
9969 | add_child_die (origin->die_parent, die); | |
ef76d03b | 9970 | else if (die == comp_unit_die) |
a96c67ec | 9971 | ; |
ef76d03b JW |
9972 | else |
9973 | abort (); | |
9974 | } | |
9975 | free (node); | |
9976 | } | |
a96c67ec | 9977 | limbo_die_list = NULL; |
ef76d03b | 9978 | |
8a8c3656 JM |
9979 | /* Walk through the list of incomplete types again, trying once more to |
9980 | emit full debugging info for them. */ | |
9981 | retry_incomplete_types (); | |
9982 | ||
a96c67ec JM |
9983 | /* Traverse the DIE's, reverse their lists of attributes and children, |
9984 | and add add sibling attributes to those DIE's that have children. */ | |
a3f97cbb JW |
9985 | add_sibling_attributes (comp_unit_die); |
9986 | ||
9987 | /* Output a terminator label for the .text section. */ | |
9988 | fputc ('\n', asm_out_file); | |
9989 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
5c90448c | 9990 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, TEXT_END_LABEL, 0); |
a3f97cbb | 9991 | |
bdb669cb | 9992 | #if 0 |
a3f97cbb JW |
9993 | /* Output a terminator label for the .data section. */ |
9994 | fputc ('\n', asm_out_file); | |
9995 | ASM_OUTPUT_SECTION (asm_out_file, DATA_SECTION); | |
5c90448c | 9996 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, DATA_END_LABEL, 0); |
a3f97cbb JW |
9997 | |
9998 | /* Output a terminator label for the .bss section. */ | |
9999 | fputc ('\n', asm_out_file); | |
10000 | ASM_OUTPUT_SECTION (asm_out_file, BSS_SECTION); | |
5c90448c | 10001 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BSS_END_LABEL, 0); |
bdb669cb | 10002 | #endif |
a3f97cbb | 10003 | |
e90b62db JM |
10004 | /* Output the source line correspondence table. */ |
10005 | if (line_info_table_in_use > 1 || separate_line_info_table_in_use) | |
10006 | { | |
b2244e22 JW |
10007 | if (! DWARF2_ASM_LINE_DEBUG_INFO) |
10008 | { | |
10009 | fputc ('\n', asm_out_file); | |
10010 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION); | |
10011 | output_line_info (); | |
10012 | } | |
e90b62db JM |
10013 | |
10014 | /* We can only use the low/high_pc attributes if all of the code | |
10015 | was in .text. */ | |
10016 | if (separate_line_info_table_in_use == 0) | |
10017 | { | |
8b790721 | 10018 | add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, text_section_label); |
5c90448c | 10019 | add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label); |
e90b62db | 10020 | } |
71dfc51f | 10021 | |
8b790721 JM |
10022 | add_AT_lbl_offset (comp_unit_die, DW_AT_stmt_list, |
10023 | debug_line_section_label); | |
e90b62db JM |
10024 | } |
10025 | ||
a96c67ec JM |
10026 | #if 0 /* unimplemented */ |
10027 | if (debug_info_level >= DINFO_LEVEL_VERBOSE && primary) | |
10028 | add_AT_unsigned (die, DW_AT_macro_info, 0); | |
10029 | #endif | |
10030 | ||
a3f97cbb JW |
10031 | /* Output the abbreviation table. */ |
10032 | fputc ('\n', asm_out_file); | |
10033 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
10034 | build_abbrev_table (comp_unit_die); | |
10035 | output_abbrev_section (); | |
10036 | ||
a3f97cbb JW |
10037 | /* Initialize the beginning DIE offset - and calculate sizes/offsets. */ |
10038 | next_die_offset = DWARF_COMPILE_UNIT_HEADER_SIZE; | |
10039 | calc_die_sizes (comp_unit_die); | |
10040 | ||
a3f97cbb JW |
10041 | /* Output debugging information. */ |
10042 | fputc ('\n', asm_out_file); | |
c53aa195 | 10043 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_INFO_SECTION); |
a3f97cbb JW |
10044 | output_compilation_unit_header (); |
10045 | output_die (comp_unit_die); | |
10046 | ||
d291dd49 JM |
10047 | if (pubname_table_in_use) |
10048 | { | |
10049 | /* Output public names table. */ | |
10050 | fputc ('\n', asm_out_file); | |
10051 | ASM_OUTPUT_SECTION (asm_out_file, PUBNAMES_SECTION); | |
10052 | output_pubnames (); | |
10053 | } | |
10054 | ||
e689ae67 JM |
10055 | /* We only put functions in the arange table, so don't write it out if |
10056 | we don't have any. */ | |
a3f97cbb JW |
10057 | if (fde_table_in_use) |
10058 | { | |
a3f97cbb JW |
10059 | /* Output the address range information. */ |
10060 | fputc ('\n', asm_out_file); | |
10061 | ASM_OUTPUT_SECTION (asm_out_file, ARANGES_SECTION); | |
10062 | output_aranges (); | |
10063 | } | |
10064 | } | |
9a666dda | 10065 | #endif /* DWARF2_DEBUGGING_INFO */ |