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a3f97cbb | 1 | /* Output Dwarf2 format symbol table information from the GNU C compiler. |
e5e809f4 | 2 | Copyright (C) 1992, 93, 95, 96, 97, 1998 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 | |
21 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
22 | ||
3f76745e JM |
23 | /* The first part of this file deals with the DWARF 2 frame unwind |
24 | information, which is also used by the GCC efficient exception handling | |
25 | mechanism. The second part, controlled only by an #ifdef | |
26 | DWARF2_DEBUGGING_INFO, deals with the other DWARF 2 debugging | |
27 | information. */ | |
28 | ||
0021b564 | 29 | #include "config.h" |
670ee920 | 30 | #include "system.h" |
0021b564 | 31 | #include "defaults.h" |
a3f97cbb JW |
32 | #include "tree.h" |
33 | #include "flags.h" | |
34 | #include "rtl.h" | |
35 | #include "hard-reg-set.h" | |
36 | #include "regs.h" | |
37 | #include "insn-config.h" | |
38 | #include "reload.h" | |
39 | #include "output.h" | |
71dfc51f | 40 | #include "expr.h" |
3f76745e | 41 | #include "except.h" |
a7cc7f29 | 42 | #include "dwarf2.h" |
76ead72b | 43 | #include "dwarf2out.h" |
10f0ad3d | 44 | #include "toplev.h" |
b170964a | 45 | #include "dyn-string.h" |
a3f97cbb | 46 | |
c85f7c16 JL |
47 | /* We cannot use <assert.h> in GCC source, since that would include |
48 | GCC's assert.h, which may not be compatible with the host compiler. */ | |
49 | #undef assert | |
50 | #ifdef NDEBUG | |
51 | # define assert(e) | |
52 | #else | |
53 | # define assert(e) do { if (! (e)) abort (); } while (0) | |
54 | #endif | |
55 | ||
0021b564 JM |
56 | /* Decide whether we want to emit frame unwind information for the current |
57 | translation unit. */ | |
58 | ||
59 | int | |
60 | dwarf2out_do_frame () | |
61 | { | |
62 | return (write_symbols == DWARF2_DEBUG | |
9ec36da5 JL |
63 | #ifdef DWARF2_FRAME_INFO |
64 | || DWARF2_FRAME_INFO | |
65 | #endif | |
0021b564 JM |
66 | #ifdef DWARF2_UNWIND_INFO |
67 | || (flag_exceptions && ! exceptions_via_longjmp) | |
68 | #endif | |
69 | ); | |
70 | } | |
71 | ||
72 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) | |
73 | ||
71dfc51f RK |
74 | #ifndef __GNUC__ |
75 | #define inline | |
a3f97cbb JW |
76 | #endif |
77 | ||
eaf95893 RK |
78 | /* How to start an assembler comment. */ |
79 | #ifndef ASM_COMMENT_START | |
80 | #define ASM_COMMENT_START ";#" | |
81 | #endif | |
82 | ||
a3f97cbb JW |
83 | typedef struct dw_cfi_struct *dw_cfi_ref; |
84 | typedef struct dw_fde_struct *dw_fde_ref; | |
85 | typedef union dw_cfi_oprnd_struct *dw_cfi_oprnd_ref; | |
a3f97cbb JW |
86 | |
87 | /* Call frames are described using a sequence of Call Frame | |
88 | Information instructions. The register number, offset | |
89 | and address fields are provided as possible operands; | |
90 | their use is selected by the opcode field. */ | |
71dfc51f | 91 | |
a3f97cbb | 92 | typedef union dw_cfi_oprnd_struct |
71dfc51f RK |
93 | { |
94 | unsigned long dw_cfi_reg_num; | |
95 | long int dw_cfi_offset; | |
96 | char *dw_cfi_addr; | |
97 | } | |
a3f97cbb JW |
98 | dw_cfi_oprnd; |
99 | ||
100 | typedef struct dw_cfi_struct | |
71dfc51f RK |
101 | { |
102 | dw_cfi_ref dw_cfi_next; | |
103 | enum dwarf_call_frame_info dw_cfi_opc; | |
104 | dw_cfi_oprnd dw_cfi_oprnd1; | |
105 | dw_cfi_oprnd dw_cfi_oprnd2; | |
106 | } | |
a3f97cbb JW |
107 | dw_cfi_node; |
108 | ||
109 | /* All call frame descriptions (FDE's) in the GCC generated DWARF | |
4b674448 | 110 | refer to a single Common Information Entry (CIE), defined at |
a3f97cbb JW |
111 | the beginning of the .debug_frame section. This used of a single |
112 | CIE obviates the need to keep track of multiple CIE's | |
113 | in the DWARF generation routines below. */ | |
71dfc51f | 114 | |
a3f97cbb | 115 | typedef struct dw_fde_struct |
71dfc51f | 116 | { |
71dfc51f RK |
117 | char *dw_fde_begin; |
118 | char *dw_fde_current_label; | |
119 | char *dw_fde_end; | |
120 | dw_cfi_ref dw_fde_cfi; | |
121 | } | |
a3f97cbb JW |
122 | dw_fde_node; |
123 | ||
a3f97cbb JW |
124 | /* Maximum size (in bytes) of an artificially generated label. */ |
125 | #define MAX_ARTIFICIAL_LABEL_BYTES 30 | |
126 | ||
127 | /* Make sure we know the sizes of the various types dwarf can describe. These | |
128 | are only defaults. If the sizes are different for your target, you should | |
129 | override these values by defining the appropriate symbols in your tm.h | |
130 | file. */ | |
71dfc51f | 131 | |
a3f97cbb JW |
132 | #ifndef CHAR_TYPE_SIZE |
133 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
134 | #endif | |
a3f97cbb | 135 | #ifndef PTR_SIZE |
a9d38797 | 136 | #define PTR_SIZE (POINTER_SIZE / BITS_PER_UNIT) |
a3f97cbb JW |
137 | #endif |
138 | ||
7e23cb16 JM |
139 | /* The size in bytes of a DWARF field indicating an offset or length |
140 | relative to a debug info section, specified to be 4 bytes in the DWARF-2 | |
141 | specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */ | |
71dfc51f | 142 | |
7e23cb16 JM |
143 | #ifndef DWARF_OFFSET_SIZE |
144 | #define DWARF_OFFSET_SIZE 4 | |
145 | #endif | |
146 | ||
9a666dda JM |
147 | #define DWARF_VERSION 2 |
148 | ||
7e23cb16 JM |
149 | /* Round SIZE up to the nearest BOUNDARY. */ |
150 | #define DWARF_ROUND(SIZE,BOUNDARY) \ | |
151 | (((SIZE) + (BOUNDARY) - 1) & ~((BOUNDARY) - 1)) | |
a3f97cbb | 152 | |
a3f97cbb | 153 | /* Offsets recorded in opcodes are a multiple of this alignment factor. */ |
469ac993 JM |
154 | #ifdef STACK_GROWS_DOWNWARD |
155 | #define DWARF_CIE_DATA_ALIGNMENT (-UNITS_PER_WORD) | |
156 | #else | |
157 | #define DWARF_CIE_DATA_ALIGNMENT UNITS_PER_WORD | |
158 | #endif | |
a3f97cbb | 159 | |
3f76745e JM |
160 | /* A pointer to the base of a table that contains frame description |
161 | information for each routine. */ | |
162 | static dw_fde_ref fde_table; | |
a3f97cbb | 163 | |
3f76745e JM |
164 | /* Number of elements currently allocated for fde_table. */ |
165 | static unsigned fde_table_allocated; | |
a94dbf2c | 166 | |
3f76745e JM |
167 | /* Number of elements in fde_table currently in use. */ |
168 | static unsigned fde_table_in_use; | |
a3f97cbb | 169 | |
3f76745e JM |
170 | /* Size (in elements) of increments by which we may expand the |
171 | fde_table. */ | |
172 | #define FDE_TABLE_INCREMENT 256 | |
a3f97cbb | 173 | |
a94dbf2c JM |
174 | /* A list of call frame insns for the CIE. */ |
175 | static dw_cfi_ref cie_cfi_head; | |
176 | ||
a3f97cbb JW |
177 | /* The number of the current function definition for which debugging |
178 | information is being generated. These numbers range from 1 up to the | |
179 | maximum number of function definitions contained within the current | |
180 | compilation unit. These numbers are used to create unique label id's | |
181 | unique to each function definition. */ | |
4f988ea2 | 182 | static unsigned current_funcdef_number = 0; |
a3f97cbb JW |
183 | |
184 | /* Some DWARF extensions (e.g., MIPS/SGI) implement a subprogram | |
185 | attribute that accelerates the lookup of the FDE associated | |
186 | with the subprogram. This variable holds the table index of the FDE | |
187 | associated with the current function (body) definition. */ | |
188 | static unsigned current_funcdef_fde; | |
189 | ||
a3f97cbb | 190 | /* Forward declarations for functions defined in this file. */ |
71dfc51f RK |
191 | |
192 | static char *stripattributes PROTO((char *)); | |
3f76745e JM |
193 | static char *dwarf_cfi_name PROTO((unsigned)); |
194 | static dw_cfi_ref new_cfi PROTO((void)); | |
195 | static void add_cfi PROTO((dw_cfi_ref *, dw_cfi_ref)); | |
71dfc51f RK |
196 | static unsigned long size_of_uleb128 PROTO((unsigned long)); |
197 | static unsigned long size_of_sleb128 PROTO((long)); | |
71dfc51f RK |
198 | static void output_uleb128 PROTO((unsigned long)); |
199 | static void output_sleb128 PROTO((long)); | |
71dfc51f RK |
200 | static void add_fde_cfi PROTO((char *, dw_cfi_ref)); |
201 | static void lookup_cfa_1 PROTO((dw_cfi_ref, unsigned long *, | |
202 | long *)); | |
203 | static void lookup_cfa PROTO((unsigned long *, long *)); | |
204 | static void reg_save PROTO((char *, unsigned, unsigned, | |
205 | long)); | |
206 | static void initial_return_save PROTO((rtx)); | |
71dfc51f | 207 | static void output_cfi PROTO((dw_cfi_ref, dw_fde_ref)); |
3f76745e | 208 | static void output_call_frame_info PROTO((int)); |
71dfc51f | 209 | static unsigned reg_number PROTO((rtx)); |
1ad4f46b | 210 | static void dwarf2out_stack_adjust PROTO((rtx)); |
a3f97cbb JW |
211 | |
212 | /* Definitions of defaults for assembler-dependent names of various | |
213 | pseudo-ops and section names. | |
214 | Theses may be overridden in the tm.h file (if necessary) for a particular | |
215 | assembler. */ | |
71dfc51f | 216 | |
0021b564 | 217 | #ifdef OBJECT_FORMAT_ELF |
a3f97cbb JW |
218 | #ifndef UNALIGNED_SHORT_ASM_OP |
219 | #define UNALIGNED_SHORT_ASM_OP ".2byte" | |
220 | #endif | |
221 | #ifndef UNALIGNED_INT_ASM_OP | |
222 | #define UNALIGNED_INT_ASM_OP ".4byte" | |
223 | #endif | |
7e23cb16 JM |
224 | #ifndef UNALIGNED_DOUBLE_INT_ASM_OP |
225 | #define UNALIGNED_DOUBLE_INT_ASM_OP ".8byte" | |
226 | #endif | |
0021b564 JM |
227 | #endif /* OBJECT_FORMAT_ELF */ |
228 | ||
a3f97cbb JW |
229 | #ifndef ASM_BYTE_OP |
230 | #define ASM_BYTE_OP ".byte" | |
231 | #endif | |
232 | ||
7e23cb16 JM |
233 | /* Data and reference forms for relocatable data. */ |
234 | #define DW_FORM_data (DWARF_OFFSET_SIZE == 8 ? DW_FORM_data8 : DW_FORM_data4) | |
235 | #define DW_FORM_ref (DWARF_OFFSET_SIZE == 8 ? DW_FORM_ref8 : DW_FORM_ref4) | |
236 | ||
a3f97cbb JW |
237 | /* Pseudo-op for defining a new section. */ |
238 | #ifndef SECTION_ASM_OP | |
239 | #define SECTION_ASM_OP ".section" | |
240 | #endif | |
241 | ||
242 | /* The default format used by the ASM_OUTPUT_SECTION macro (see below) to | |
243 | print the SECTION_ASM_OP and the section name. The default here works for | |
244 | almost all svr4 assemblers, except for the sparc, where the section name | |
245 | must be enclosed in double quotes. (See sparcv4.h). */ | |
246 | #ifndef SECTION_FORMAT | |
c53aa195 JM |
247 | #ifdef PUSHSECTION_FORMAT |
248 | #define SECTION_FORMAT PUSHSECTION_FORMAT | |
249 | #else | |
250 | #define SECTION_FORMAT "\t%s\t%s\n" | |
251 | #endif | |
a3f97cbb JW |
252 | #endif |
253 | ||
a3f97cbb JW |
254 | #ifndef FRAME_SECTION |
255 | #define FRAME_SECTION ".debug_frame" | |
256 | #endif | |
a3f97cbb | 257 | |
5c90448c JM |
258 | #ifndef FUNC_BEGIN_LABEL |
259 | #define FUNC_BEGIN_LABEL "LFB" | |
a3f97cbb | 260 | #endif |
5c90448c JM |
261 | #ifndef FUNC_END_LABEL |
262 | #define FUNC_END_LABEL "LFE" | |
a3f97cbb | 263 | #endif |
a6ab3aad JM |
264 | #define CIE_AFTER_SIZE_LABEL "LSCIE" |
265 | #define CIE_END_LABEL "LECIE" | |
2ed2af28 | 266 | #define CIE_LENGTH_LABEL "LLCIE" |
a6ab3aad JM |
267 | #define FDE_AFTER_SIZE_LABEL "LSFDE" |
268 | #define FDE_END_LABEL "LEFDE" | |
2ed2af28 | 269 | #define FDE_LENGTH_LABEL "LLFDE" |
a3f97cbb | 270 | |
a3f97cbb JW |
271 | /* Definitions of defaults for various types of primitive assembly language |
272 | output operations. These may be overridden from within the tm.h file, | |
956d6950 | 273 | but typically, that is unnecessary. */ |
71dfc51f | 274 | |
a3f97cbb JW |
275 | #ifndef ASM_OUTPUT_SECTION |
276 | #define ASM_OUTPUT_SECTION(FILE, SECTION) \ | |
277 | fprintf ((FILE), SECTION_FORMAT, SECTION_ASM_OP, SECTION) | |
278 | #endif | |
279 | ||
0021b564 JM |
280 | #ifndef ASM_OUTPUT_DWARF_DATA1 |
281 | #define ASM_OUTPUT_DWARF_DATA1(FILE,VALUE) \ | |
32bd96ff | 282 | fprintf ((FILE), "\t%s\t0x%x", ASM_BYTE_OP, (unsigned) (VALUE)) |
0021b564 JM |
283 | #endif |
284 | ||
bb727b5a JM |
285 | #ifndef ASM_OUTPUT_DWARF_DELTA1 |
286 | #define ASM_OUTPUT_DWARF_DELTA1(FILE,LABEL1,LABEL2) \ | |
287 | do { fprintf ((FILE), "\t%s\t", ASM_BYTE_OP); \ | |
288 | assemble_name (FILE, LABEL1); \ | |
289 | fprintf (FILE, "-"); \ | |
290 | assemble_name (FILE, LABEL2); \ | |
291 | } while (0) | |
292 | #endif | |
293 | ||
0021b564 JM |
294 | #ifdef UNALIGNED_INT_ASM_OP |
295 | ||
296 | #ifndef UNALIGNED_OFFSET_ASM_OP | |
297 | #define UNALIGNED_OFFSET_ASM_OP \ | |
298 | (DWARF_OFFSET_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
299 | #endif | |
300 | ||
301 | #ifndef UNALIGNED_WORD_ASM_OP | |
302 | #define UNALIGNED_WORD_ASM_OP \ | |
303 | (PTR_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
304 | #endif | |
305 | ||
a3f97cbb JW |
306 | #ifndef ASM_OUTPUT_DWARF_DELTA2 |
307 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
308 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_SHORT_ASM_OP); \ | |
309 | assemble_name (FILE, LABEL1); \ | |
310 | fprintf (FILE, "-"); \ | |
311 | assemble_name (FILE, LABEL2); \ | |
312 | } while (0) | |
313 | #endif | |
314 | ||
315 | #ifndef ASM_OUTPUT_DWARF_DELTA4 | |
316 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
317 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
318 | assemble_name (FILE, LABEL1); \ | |
319 | fprintf (FILE, "-"); \ | |
320 | assemble_name (FILE, LABEL2); \ | |
321 | } while (0) | |
322 | #endif | |
323 | ||
7e23cb16 JM |
324 | #ifndef ASM_OUTPUT_DWARF_DELTA |
325 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
326 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
327 | assemble_name (FILE, LABEL1); \ | |
328 | fprintf (FILE, "-"); \ | |
329 | assemble_name (FILE, LABEL2); \ | |
330 | } while (0) | |
331 | #endif | |
332 | ||
333 | #ifndef ASM_OUTPUT_DWARF_ADDR_DELTA | |
334 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
335 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ | |
336 | assemble_name (FILE, LABEL1); \ | |
337 | fprintf (FILE, "-"); \ | |
338 | assemble_name (FILE, LABEL2); \ | |
339 | } while (0) | |
340 | #endif | |
341 | ||
a3f97cbb JW |
342 | #ifndef ASM_OUTPUT_DWARF_ADDR |
343 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
7e23cb16 | 344 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ |
a3f97cbb JW |
345 | assemble_name (FILE, LABEL); \ |
346 | } while (0) | |
347 | #endif | |
348 | ||
cba96cb7 JW |
349 | /* ??? This macro takes an RTX in dwarfout.c and a string in dwarf2out.c. |
350 | We resolve the conflict by creating a new macro ASM_OUTPUT_DWARF2_ADDR_CONST | |
351 | for ports that want to support both DWARF1 and DWARF2. This needs a better | |
352 | solution. See also the comments in sparc/sp64-elf.h. */ | |
353 | #ifdef ASM_OUTPUT_DWARF2_ADDR_CONST | |
354 | #undef ASM_OUTPUT_DWARF_ADDR_CONST | |
355 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,ADDR) \ | |
356 | ASM_OUTPUT_DWARF2_ADDR_CONST (FILE, ADDR) | |
357 | #endif | |
358 | ||
a3f97cbb JW |
359 | #ifndef ASM_OUTPUT_DWARF_ADDR_CONST |
360 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,ADDR) \ | |
7e23cb16 JM |
361 | fprintf ((FILE), "\t%s\t%s", UNALIGNED_WORD_ASM_OP, (ADDR)) |
362 | #endif | |
363 | ||
7bb9fb0e JM |
364 | #ifndef ASM_OUTPUT_DWARF_OFFSET4 |
365 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ | |
366 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
367 | assemble_name (FILE, LABEL); \ | |
368 | } while (0) | |
369 | #endif | |
370 | ||
7e23cb16 JM |
371 | #ifndef ASM_OUTPUT_DWARF_OFFSET |
372 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ | |
373 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
374 | assemble_name (FILE, LABEL); \ | |
375 | } while (0) | |
a3f97cbb JW |
376 | #endif |
377 | ||
a3f97cbb JW |
378 | #ifndef ASM_OUTPUT_DWARF_DATA2 |
379 | #define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \ | |
32bd96ff | 380 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_SHORT_ASM_OP, (unsigned) (VALUE)) |
a3f97cbb JW |
381 | #endif |
382 | ||
383 | #ifndef ASM_OUTPUT_DWARF_DATA4 | |
384 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
32bd96ff | 385 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, (unsigned) (VALUE)) |
a3f97cbb JW |
386 | #endif |
387 | ||
7e23cb16 JM |
388 | #ifndef ASM_OUTPUT_DWARF_DATA |
389 | #define ASM_OUTPUT_DWARF_DATA(FILE,VALUE) \ | |
390 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_OFFSET_ASM_OP, \ | |
32bd96ff | 391 | (unsigned long) (VALUE)) |
7e23cb16 JM |
392 | #endif |
393 | ||
394 | #ifndef ASM_OUTPUT_DWARF_ADDR_DATA | |
395 | #define ASM_OUTPUT_DWARF_ADDR_DATA(FILE,VALUE) \ | |
396 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_WORD_ASM_OP, \ | |
32bd96ff | 397 | (unsigned long) (VALUE)) |
7e23cb16 JM |
398 | #endif |
399 | ||
a3f97cbb JW |
400 | #ifndef ASM_OUTPUT_DWARF_DATA8 |
401 | #define ASM_OUTPUT_DWARF_DATA8(FILE,HIGH_VALUE,LOW_VALUE) \ | |
402 | do { \ | |
403 | if (WORDS_BIG_ENDIAN) \ | |
404 | { \ | |
32bd96ff JM |
405 | fprintf ((FILE), "\t%s\t0x%lx\n", UNALIGNED_INT_ASM_OP, (HIGH_VALUE));\ |
406 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_INT_ASM_OP, (LOW_VALUE));\ | |
a3f97cbb JW |
407 | } \ |
408 | else \ | |
409 | { \ | |
32bd96ff JM |
410 | fprintf ((FILE), "\t%s\t0x%lx\n", UNALIGNED_INT_ASM_OP, (LOW_VALUE)); \ |
411 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_INT_ASM_OP, (HIGH_VALUE)); \ | |
a3f97cbb JW |
412 | } \ |
413 | } while (0) | |
414 | #endif | |
415 | ||
0021b564 JM |
416 | #else /* UNALIGNED_INT_ASM_OP */ |
417 | ||
418 | /* We don't have unaligned support, let's hope the normal output works for | |
419 | .debug_frame. */ | |
420 | ||
421 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
38a448ca | 422 | assemble_integer (gen_rtx_SYMBOL_REF (Pmode, LABEL), PTR_SIZE, 1) |
0021b564 | 423 | |
7bb9fb0e | 424 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ |
38a448ca | 425 | assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1) |
7bb9fb0e | 426 | |
0021b564 | 427 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ |
38a448ca | 428 | assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1) |
0021b564 JM |
429 | |
430 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
38a448ca RH |
431 | assemble_integer (gen_rtx_MINUS (HImode, \ |
432 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ | |
433 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 JM |
434 | 2, 1) |
435 | ||
436 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
38a448ca RH |
437 | assemble_integer (gen_rtx_MINUS (SImode, \ |
438 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ | |
439 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 JM |
440 | 4, 1) |
441 | ||
442 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
38a448ca RH |
443 | assemble_integer (gen_rtx_MINUS (Pmode, \ |
444 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ | |
445 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 JM |
446 | PTR_SIZE, 1) |
447 | ||
448 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
449 | ASM_OUTPUT_DWARF_DELTA4 (FILE,LABEL1,LABEL2) | |
450 | ||
451 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
452 | assemble_integer (GEN_INT (VALUE), 4, 1) | |
453 | ||
454 | #endif /* UNALIGNED_INT_ASM_OP */ | |
455 | ||
2ed2af28 PDM |
456 | #ifdef SET_ASM_OP |
457 | #ifndef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL | |
7bb9fb0e JM |
458 | #define ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL(FILE, SY, HI, LO) \ |
459 | do { \ | |
460 | fprintf (FILE, "\t%s\t", SET_ASM_OP); \ | |
461 | assemble_name (FILE, SY); \ | |
462 | fputc (',', FILE); \ | |
463 | assemble_name (FILE, HI); \ | |
464 | fputc ('-', FILE); \ | |
465 | assemble_name (FILE, LO); \ | |
466 | } while (0) | |
2ed2af28 PDM |
467 | #endif |
468 | #endif /* SET_ASM_OP */ | |
469 | ||
a6ab3aad | 470 | /* This is similar to the default ASM_OUTPUT_ASCII, except that no trailing |
2ed2af28 | 471 | newline is produced. When flag_debug_asm is asserted, we add commentary |
a6ab3aad JM |
472 | at the end of the line, so we must avoid output of a newline here. */ |
473 | #ifndef ASM_OUTPUT_DWARF_STRING | |
474 | #define ASM_OUTPUT_DWARF_STRING(FILE,P) \ | |
475 | do { \ | |
476 | register int slen = strlen(P); \ | |
477 | register char *p = (P); \ | |
478 | register int i; \ | |
479 | fprintf (FILE, "\t.ascii \""); \ | |
480 | for (i = 0; i < slen; i++) \ | |
481 | { \ | |
482 | register int c = p[i]; \ | |
483 | if (c == '\"' || c == '\\') \ | |
484 | putc ('\\', FILE); \ | |
485 | if (c >= ' ' && c < 0177) \ | |
486 | putc (c, FILE); \ | |
487 | else \ | |
488 | { \ | |
489 | fprintf (FILE, "\\%o", c); \ | |
490 | } \ | |
491 | } \ | |
492 | fprintf (FILE, "\\0\""); \ | |
493 | } \ | |
494 | while (0) | |
495 | #endif | |
496 | ||
c8cc5c4a | 497 | /* The DWARF 2 CFA column which tracks the return address. Normally this |
a94dbf2c JM |
498 | is the column for PC, or the first column after all of the hard |
499 | registers. */ | |
c8cc5c4a | 500 | #ifndef DWARF_FRAME_RETURN_COLUMN |
a94dbf2c JM |
501 | #ifdef PC_REGNUM |
502 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) | |
503 | #else | |
466446b0 | 504 | #define DWARF_FRAME_RETURN_COLUMN FIRST_PSEUDO_REGISTER |
a94dbf2c | 505 | #endif |
c8cc5c4a JM |
506 | #endif |
507 | ||
508 | /* The mapping from gcc register number to DWARF 2 CFA column number. By | |
469ac993 | 509 | default, we just provide columns for all registers. */ |
c8cc5c4a | 510 | #ifndef DWARF_FRAME_REGNUM |
469ac993 | 511 | #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) |
c8cc5c4a | 512 | #endif |
3f76745e | 513 | |
0021b564 JM |
514 | /* Hook used by __throw. */ |
515 | ||
516 | rtx | |
517 | expand_builtin_dwarf_fp_regnum () | |
518 | { | |
519 | return GEN_INT (DWARF_FRAME_REGNUM (HARD_FRAME_POINTER_REGNUM)); | |
520 | } | |
521 | ||
a6ab3aad JM |
522 | /* The offset from the incoming value of %sp to the top of the stack frame |
523 | for the current function. */ | |
524 | #ifndef INCOMING_FRAME_SP_OFFSET | |
525 | #define INCOMING_FRAME_SP_OFFSET 0 | |
526 | #endif | |
527 | ||
71dfc51f | 528 | /* Return a pointer to a copy of the section string name S with all |
bf20f341 | 529 | attributes stripped off, and an asterisk prepended (for assemble_name). */ |
71dfc51f RK |
530 | |
531 | static inline char * | |
a3f97cbb | 532 | stripattributes (s) |
71dfc51f | 533 | char *s; |
a3f97cbb | 534 | { |
bf20f341 | 535 | char *stripped = xmalloc (strlen (s) + 2); |
71dfc51f RK |
536 | char *p = stripped; |
537 | ||
bf20f341 JW |
538 | *p++ = '*'; |
539 | ||
540 | while (*s && *s != ',') | |
541 | *p++ = *s++; | |
71dfc51f | 542 | |
a3f97cbb JW |
543 | *p = '\0'; |
544 | return stripped; | |
545 | } | |
546 | ||
3f76745e | 547 | /* Return the register number described by a given RTL node. */ |
71dfc51f | 548 | |
3f76745e JM |
549 | static unsigned |
550 | reg_number (rtl) | |
551 | register rtx rtl; | |
a3f97cbb | 552 | { |
3f76745e | 553 | register unsigned regno = REGNO (rtl); |
a3f97cbb | 554 | |
3f76745e | 555 | if (regno >= FIRST_PSEUDO_REGISTER) |
a3f97cbb | 556 | { |
3f76745e JM |
557 | warning ("internal regno botch: regno = %d\n", regno); |
558 | regno = 0; | |
559 | } | |
a3f97cbb | 560 | |
3f76745e JM |
561 | regno = DBX_REGISTER_NUMBER (regno); |
562 | return regno; | |
563 | } | |
a3f97cbb | 564 | |
2f3ca9e7 JM |
565 | struct reg_size_range |
566 | { | |
567 | int beg; | |
568 | int end; | |
569 | int size; | |
570 | }; | |
571 | ||
572 | /* Given a register number in REG_TREE, return an rtx for its size in bytes. | |
573 | We do this in kind of a roundabout way, by building up a list of | |
574 | register size ranges and seeing where our register falls in one of those | |
575 | ranges. We need to do it this way because REG_TREE is not a constant, | |
576 | and the target macros were not designed to make this task easy. */ | |
577 | ||
578 | rtx | |
579 | expand_builtin_dwarf_reg_size (reg_tree, target) | |
580 | tree reg_tree; | |
581 | rtx target; | |
582 | { | |
31c8581d | 583 | enum machine_mode mode; |
d1485032 | 584 | int size; |
2f3ca9e7 JM |
585 | struct reg_size_range ranges[5]; |
586 | tree t, t2; | |
587 | ||
d1485032 JM |
588 | int i = 0; |
589 | int n_ranges = 0; | |
590 | int last_size = -1; | |
2f3ca9e7 | 591 | |
d1485032 | 592 | for (; i < FIRST_PSEUDO_REGISTER; ++i) |
2f3ca9e7 | 593 | { |
d1485032 JM |
594 | /* The return address is out of order on the MIPS, and we don't use |
595 | copy_reg for it anyway, so we don't care here how large it is. */ | |
596 | if (DWARF_FRAME_REGNUM (i) == DWARF_FRAME_RETURN_COLUMN) | |
597 | continue; | |
598 | ||
31c8581d | 599 | mode = reg_raw_mode[i]; |
e5e809f4 | 600 | |
31c8581d JW |
601 | /* CCmode is arbitrarily given a size of 4 bytes. It is more useful |
602 | to use the same size as word_mode, since that reduces the number | |
603 | of ranges we need. It should not matter, since the result should | |
604 | never be used for a condition code register anyways. */ | |
e5e809f4 | 605 | if (GET_MODE_CLASS (mode) == MODE_CC) |
31c8581d | 606 | mode = word_mode; |
e5e809f4 | 607 | |
31c8581d JW |
608 | size = GET_MODE_SIZE (mode); |
609 | ||
e5e809f4 JL |
610 | /* If this register is not valid in the specified mode and |
611 | we have a previous size, use that for the size of this | |
612 | register to avoid making junk tiny ranges. */ | |
613 | if (! HARD_REGNO_MODE_OK (i, mode) && last_size != -1) | |
614 | size = last_size; | |
615 | ||
d1485032 | 616 | if (size != last_size) |
2f3ca9e7 | 617 | { |
2f3ca9e7 | 618 | ranges[n_ranges].beg = i; |
e5e809f4 | 619 | ranges[n_ranges].size = last_size = size; |
2f3ca9e7 | 620 | ++n_ranges; |
3a88cbd1 JL |
621 | if (n_ranges >= 5) |
622 | abort (); | |
2f3ca9e7 | 623 | } |
d1485032 | 624 | ranges[n_ranges-1].end = i; |
2f3ca9e7 | 625 | } |
2f3ca9e7 JM |
626 | |
627 | /* The usual case: fp regs surrounded by general regs. */ | |
628 | if (n_ranges == 3 && ranges[0].size == ranges[2].size) | |
629 | { | |
3a88cbd1 JL |
630 | if ((DWARF_FRAME_REGNUM (ranges[1].end) |
631 | - DWARF_FRAME_REGNUM (ranges[1].beg)) | |
632 | != ranges[1].end - ranges[1].beg) | |
633 | abort (); | |
2f3ca9e7 JM |
634 | t = fold (build (GE_EXPR, integer_type_node, reg_tree, |
635 | build_int_2 (DWARF_FRAME_REGNUM (ranges[1].beg), 0))); | |
636 | t2 = fold (build (LE_EXPR, integer_type_node, reg_tree, | |
637 | build_int_2 (DWARF_FRAME_REGNUM (ranges[1].end), 0))); | |
638 | t = fold (build (TRUTH_ANDIF_EXPR, integer_type_node, t, t2)); | |
639 | t = fold (build (COND_EXPR, integer_type_node, t, | |
640 | build_int_2 (ranges[1].size, 0), | |
641 | build_int_2 (ranges[0].size, 0))); | |
642 | } | |
643 | else | |
644 | { | |
645 | --n_ranges; | |
646 | t = build_int_2 (ranges[n_ranges].size, 0); | |
647 | size = DWARF_FRAME_REGNUM (ranges[n_ranges].beg); | |
648 | for (; n_ranges--; ) | |
649 | { | |
3a88cbd1 JL |
650 | if ((DWARF_FRAME_REGNUM (ranges[n_ranges].end) |
651 | - DWARF_FRAME_REGNUM (ranges[n_ranges].beg)) | |
652 | != ranges[n_ranges].end - ranges[n_ranges].beg) | |
653 | abort (); | |
654 | if (DWARF_FRAME_REGNUM (ranges[n_ranges].beg) >= size) | |
655 | abort (); | |
2f3ca9e7 JM |
656 | size = DWARF_FRAME_REGNUM (ranges[n_ranges].beg); |
657 | t2 = fold (build (LE_EXPR, integer_type_node, reg_tree, | |
658 | build_int_2 (DWARF_FRAME_REGNUM | |
659 | (ranges[n_ranges].end), 0))); | |
660 | t = fold (build (COND_EXPR, integer_type_node, t2, | |
661 | build_int_2 (ranges[n_ranges].size, 0), t)); | |
662 | } | |
663 | } | |
664 | return expand_expr (t, target, Pmode, 0); | |
665 | } | |
666 | ||
3f76745e | 667 | /* Convert a DWARF call frame info. operation to its string name */ |
a3f97cbb | 668 | |
3f76745e JM |
669 | static char * |
670 | dwarf_cfi_name (cfi_opc) | |
671 | register unsigned cfi_opc; | |
672 | { | |
673 | switch (cfi_opc) | |
674 | { | |
675 | case DW_CFA_advance_loc: | |
676 | return "DW_CFA_advance_loc"; | |
677 | case DW_CFA_offset: | |
678 | return "DW_CFA_offset"; | |
679 | case DW_CFA_restore: | |
680 | return "DW_CFA_restore"; | |
681 | case DW_CFA_nop: | |
682 | return "DW_CFA_nop"; | |
683 | case DW_CFA_set_loc: | |
684 | return "DW_CFA_set_loc"; | |
685 | case DW_CFA_advance_loc1: | |
686 | return "DW_CFA_advance_loc1"; | |
687 | case DW_CFA_advance_loc2: | |
688 | return "DW_CFA_advance_loc2"; | |
689 | case DW_CFA_advance_loc4: | |
690 | return "DW_CFA_advance_loc4"; | |
691 | case DW_CFA_offset_extended: | |
692 | return "DW_CFA_offset_extended"; | |
693 | case DW_CFA_restore_extended: | |
694 | return "DW_CFA_restore_extended"; | |
695 | case DW_CFA_undefined: | |
696 | return "DW_CFA_undefined"; | |
697 | case DW_CFA_same_value: | |
698 | return "DW_CFA_same_value"; | |
699 | case DW_CFA_register: | |
700 | return "DW_CFA_register"; | |
701 | case DW_CFA_remember_state: | |
702 | return "DW_CFA_remember_state"; | |
703 | case DW_CFA_restore_state: | |
704 | return "DW_CFA_restore_state"; | |
705 | case DW_CFA_def_cfa: | |
706 | return "DW_CFA_def_cfa"; | |
707 | case DW_CFA_def_cfa_register: | |
708 | return "DW_CFA_def_cfa_register"; | |
709 | case DW_CFA_def_cfa_offset: | |
710 | return "DW_CFA_def_cfa_offset"; | |
c53aa195 | 711 | |
3f76745e JM |
712 | /* SGI/MIPS specific */ |
713 | case DW_CFA_MIPS_advance_loc8: | |
714 | return "DW_CFA_MIPS_advance_loc8"; | |
c53aa195 JM |
715 | |
716 | /* GNU extensions */ | |
717 | case DW_CFA_GNU_window_save: | |
718 | return "DW_CFA_GNU_window_save"; | |
0021b564 JM |
719 | case DW_CFA_GNU_args_size: |
720 | return "DW_CFA_GNU_args_size"; | |
c53aa195 | 721 | |
3f76745e JM |
722 | default: |
723 | return "DW_CFA_<unknown>"; | |
724 | } | |
725 | } | |
a3f97cbb | 726 | |
3f76745e | 727 | /* Return a pointer to a newly allocated Call Frame Instruction. */ |
71dfc51f | 728 | |
3f76745e JM |
729 | static inline dw_cfi_ref |
730 | new_cfi () | |
731 | { | |
732 | register dw_cfi_ref cfi = (dw_cfi_ref) xmalloc (sizeof (dw_cfi_node)); | |
71dfc51f | 733 | |
3f76745e JM |
734 | cfi->dw_cfi_next = NULL; |
735 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = 0; | |
736 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = 0; | |
a3f97cbb | 737 | |
3f76745e JM |
738 | return cfi; |
739 | } | |
a3f97cbb | 740 | |
3f76745e | 741 | /* Add a Call Frame Instruction to list of instructions. */ |
a3f97cbb | 742 | |
3f76745e JM |
743 | static inline void |
744 | add_cfi (list_head, cfi) | |
745 | register dw_cfi_ref *list_head; | |
746 | register dw_cfi_ref cfi; | |
747 | { | |
748 | register dw_cfi_ref *p; | |
a3f97cbb | 749 | |
3f76745e JM |
750 | /* Find the end of the chain. */ |
751 | for (p = list_head; (*p) != NULL; p = &(*p)->dw_cfi_next) | |
752 | ; | |
753 | ||
754 | *p = cfi; | |
a3f97cbb JW |
755 | } |
756 | ||
3f76745e | 757 | /* Generate a new label for the CFI info to refer to. */ |
71dfc51f | 758 | |
c53aa195 | 759 | char * |
3f76745e | 760 | dwarf2out_cfi_label () |
a3f97cbb | 761 | { |
3f76745e JM |
762 | static char label[20]; |
763 | static unsigned long label_num = 0; | |
764 | ||
765 | ASM_GENERATE_INTERNAL_LABEL (label, "LCFI", label_num++); | |
766 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
767 | ||
768 | return label; | |
a3f97cbb JW |
769 | } |
770 | ||
3f76745e JM |
771 | /* Add CFI to the current fde at the PC value indicated by LABEL if specified, |
772 | or to the CIE if LABEL is NULL. */ | |
71dfc51f | 773 | |
3f76745e JM |
774 | static void |
775 | add_fde_cfi (label, cfi) | |
776 | register char *label; | |
777 | register dw_cfi_ref cfi; | |
a3f97cbb | 778 | { |
3f76745e JM |
779 | if (label) |
780 | { | |
781 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; | |
a3f97cbb | 782 | |
3f76745e JM |
783 | if (*label == 0) |
784 | label = dwarf2out_cfi_label (); | |
71dfc51f | 785 | |
3f76745e JM |
786 | if (fde->dw_fde_current_label == NULL |
787 | || strcmp (label, fde->dw_fde_current_label) != 0) | |
788 | { | |
789 | register dw_cfi_ref xcfi; | |
a3f97cbb | 790 | |
3f76745e | 791 | fde->dw_fde_current_label = label = xstrdup (label); |
71dfc51f | 792 | |
3f76745e JM |
793 | /* Set the location counter to the new label. */ |
794 | xcfi = new_cfi (); | |
795 | xcfi->dw_cfi_opc = DW_CFA_advance_loc4; | |
796 | xcfi->dw_cfi_oprnd1.dw_cfi_addr = label; | |
797 | add_cfi (&fde->dw_fde_cfi, xcfi); | |
798 | } | |
71dfc51f | 799 | |
3f76745e JM |
800 | add_cfi (&fde->dw_fde_cfi, cfi); |
801 | } | |
802 | ||
803 | else | |
804 | add_cfi (&cie_cfi_head, cfi); | |
a3f97cbb JW |
805 | } |
806 | ||
3f76745e | 807 | /* Subroutine of lookup_cfa. */ |
71dfc51f | 808 | |
3f76745e JM |
809 | static inline void |
810 | lookup_cfa_1 (cfi, regp, offsetp) | |
811 | register dw_cfi_ref cfi; | |
812 | register unsigned long *regp; | |
813 | register long *offsetp; | |
a3f97cbb | 814 | { |
3f76745e JM |
815 | switch (cfi->dw_cfi_opc) |
816 | { | |
817 | case DW_CFA_def_cfa_offset: | |
818 | *offsetp = cfi->dw_cfi_oprnd1.dw_cfi_offset; | |
819 | break; | |
820 | case DW_CFA_def_cfa_register: | |
821 | *regp = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; | |
822 | break; | |
823 | case DW_CFA_def_cfa: | |
824 | *regp = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; | |
825 | *offsetp = cfi->dw_cfi_oprnd2.dw_cfi_offset; | |
826 | break; | |
e9a25f70 JL |
827 | default: |
828 | break; | |
3f76745e | 829 | } |
a3f97cbb JW |
830 | } |
831 | ||
3f76745e | 832 | /* Find the previous value for the CFA. */ |
71dfc51f | 833 | |
3f76745e JM |
834 | static void |
835 | lookup_cfa (regp, offsetp) | |
836 | register unsigned long *regp; | |
837 | register long *offsetp; | |
a3f97cbb | 838 | { |
3f76745e JM |
839 | register dw_cfi_ref cfi; |
840 | ||
841 | *regp = (unsigned long) -1; | |
842 | *offsetp = 0; | |
843 | ||
844 | for (cfi = cie_cfi_head; cfi; cfi = cfi->dw_cfi_next) | |
845 | lookup_cfa_1 (cfi, regp, offsetp); | |
846 | ||
847 | if (fde_table_in_use) | |
a3f97cbb | 848 | { |
3f76745e JM |
849 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; |
850 | for (cfi = fde->dw_fde_cfi; cfi; cfi = cfi->dw_cfi_next) | |
851 | lookup_cfa_1 (cfi, regp, offsetp); | |
a3f97cbb JW |
852 | } |
853 | } | |
854 | ||
3f76745e | 855 | /* The current rule for calculating the DWARF2 canonical frame address. */ |
a6ab3aad | 856 | static unsigned long cfa_reg; |
3f76745e | 857 | static long cfa_offset; |
71dfc51f | 858 | |
3f76745e JM |
859 | /* The register used for saving registers to the stack, and its offset |
860 | from the CFA. */ | |
861 | static unsigned cfa_store_reg; | |
862 | static long cfa_store_offset; | |
863 | ||
0021b564 JM |
864 | /* The running total of the size of arguments pushed onto the stack. */ |
865 | static long args_size; | |
866 | ||
b57d9225 JM |
867 | /* The last args_size we actually output. */ |
868 | static long old_args_size; | |
869 | ||
3f76745e JM |
870 | /* Entry point to update the canonical frame address (CFA). |
871 | LABEL is passed to add_fde_cfi. The value of CFA is now to be | |
872 | calculated from REG+OFFSET. */ | |
873 | ||
874 | void | |
875 | dwarf2out_def_cfa (label, reg, offset) | |
876 | register char *label; | |
877 | register unsigned reg; | |
878 | register long offset; | |
a3f97cbb | 879 | { |
3f76745e JM |
880 | register dw_cfi_ref cfi; |
881 | unsigned long old_reg; | |
882 | long old_offset; | |
883 | ||
5bef9b1f JM |
884 | cfa_reg = reg; |
885 | cfa_offset = offset; | |
886 | if (cfa_store_reg == reg) | |
887 | cfa_store_offset = offset; | |
888 | ||
3f76745e JM |
889 | reg = DWARF_FRAME_REGNUM (reg); |
890 | lookup_cfa (&old_reg, &old_offset); | |
891 | ||
892 | if (reg == old_reg && offset == old_offset) | |
893 | return; | |
894 | ||
895 | cfi = new_cfi (); | |
896 | ||
897 | if (reg == old_reg) | |
a3f97cbb | 898 | { |
3f76745e JM |
899 | cfi->dw_cfi_opc = DW_CFA_def_cfa_offset; |
900 | cfi->dw_cfi_oprnd1.dw_cfi_offset = offset; | |
901 | } | |
a3f97cbb | 902 | |
3f76745e JM |
903 | #ifndef MIPS_DEBUGGING_INFO /* SGI dbx thinks this means no offset. */ |
904 | else if (offset == old_offset && old_reg != (unsigned long) -1) | |
905 | { | |
906 | cfi->dw_cfi_opc = DW_CFA_def_cfa_register; | |
907 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
908 | } | |
909 | #endif | |
a3f97cbb | 910 | |
3f76745e JM |
911 | else |
912 | { | |
913 | cfi->dw_cfi_opc = DW_CFA_def_cfa; | |
914 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
915 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; | |
a3f97cbb | 916 | } |
3f76745e JM |
917 | |
918 | add_fde_cfi (label, cfi); | |
a3f97cbb JW |
919 | } |
920 | ||
3f76745e JM |
921 | /* Add the CFI for saving a register. REG is the CFA column number. |
922 | LABEL is passed to add_fde_cfi. | |
923 | If SREG is -1, the register is saved at OFFSET from the CFA; | |
924 | otherwise it is saved in SREG. */ | |
71dfc51f | 925 | |
3f76745e JM |
926 | static void |
927 | reg_save (label, reg, sreg, offset) | |
928 | register char * label; | |
929 | register unsigned reg; | |
930 | register unsigned sreg; | |
931 | register long offset; | |
a3f97cbb | 932 | { |
3f76745e JM |
933 | register dw_cfi_ref cfi = new_cfi (); |
934 | ||
935 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
936 | ||
85066503 MH |
937 | /* The following comparison is correct. -1 is used to indicate that |
938 | the value isn't a register number. */ | |
939 | if (sreg == (unsigned int) -1) | |
a3f97cbb | 940 | { |
3f76745e JM |
941 | if (reg & ~0x3f) |
942 | /* The register number won't fit in 6 bits, so we have to use | |
943 | the long form. */ | |
944 | cfi->dw_cfi_opc = DW_CFA_offset_extended; | |
945 | else | |
946 | cfi->dw_cfi_opc = DW_CFA_offset; | |
947 | ||
948 | offset /= DWARF_CIE_DATA_ALIGNMENT; | |
3a88cbd1 JL |
949 | if (offset < 0) |
950 | abort (); | |
3f76745e JM |
951 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; |
952 | } | |
953 | else | |
954 | { | |
955 | cfi->dw_cfi_opc = DW_CFA_register; | |
956 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = sreg; | |
957 | } | |
958 | ||
959 | add_fde_cfi (label, cfi); | |
960 | } | |
961 | ||
c53aa195 JM |
962 | /* Add the CFI for saving a register window. LABEL is passed to reg_save. |
963 | This CFI tells the unwinder that it needs to restore the window registers | |
964 | from the previous frame's window save area. | |
965 | ||
966 | ??? Perhaps we should note in the CIE where windows are saved (instead of | |
967 | assuming 0(cfa)) and what registers are in the window. */ | |
968 | ||
969 | void | |
970 | dwarf2out_window_save (label) | |
971 | register char * label; | |
972 | { | |
973 | register dw_cfi_ref cfi = new_cfi (); | |
974 | cfi->dw_cfi_opc = DW_CFA_GNU_window_save; | |
975 | add_fde_cfi (label, cfi); | |
976 | } | |
977 | ||
0021b564 JM |
978 | /* Add a CFI to update the running total of the size of arguments |
979 | pushed onto the stack. */ | |
980 | ||
981 | void | |
982 | dwarf2out_args_size (label, size) | |
983 | char *label; | |
984 | long size; | |
985 | { | |
b57d9225 JM |
986 | register dw_cfi_ref cfi; |
987 | ||
988 | if (size == old_args_size) | |
989 | return; | |
990 | old_args_size = size; | |
991 | ||
992 | cfi = new_cfi (); | |
0021b564 JM |
993 | cfi->dw_cfi_opc = DW_CFA_GNU_args_size; |
994 | cfi->dw_cfi_oprnd1.dw_cfi_offset = size; | |
995 | add_fde_cfi (label, cfi); | |
996 | } | |
997 | ||
c53aa195 JM |
998 | /* Entry point for saving a register to the stack. REG is the GCC register |
999 | number. LABEL and OFFSET are passed to reg_save. */ | |
3f76745e JM |
1000 | |
1001 | void | |
1002 | dwarf2out_reg_save (label, reg, offset) | |
1003 | register char * label; | |
1004 | register unsigned reg; | |
1005 | register long offset; | |
1006 | { | |
1007 | reg_save (label, DWARF_FRAME_REGNUM (reg), -1, offset); | |
1008 | } | |
1009 | ||
c53aa195 JM |
1010 | /* Entry point for saving the return address in the stack. |
1011 | LABEL and OFFSET are passed to reg_save. */ | |
1012 | ||
1013 | void | |
1014 | dwarf2out_return_save (label, offset) | |
1015 | register char * label; | |
1016 | register long offset; | |
1017 | { | |
1018 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, -1, offset); | |
1019 | } | |
1020 | ||
1021 | /* Entry point for saving the return address in a register. | |
1022 | LABEL and SREG are passed to reg_save. */ | |
1023 | ||
1024 | void | |
1025 | dwarf2out_return_reg (label, sreg) | |
1026 | register char * label; | |
1027 | register unsigned sreg; | |
1028 | { | |
1029 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, sreg, 0); | |
1030 | } | |
1031 | ||
3f76745e JM |
1032 | /* Record the initial position of the return address. RTL is |
1033 | INCOMING_RETURN_ADDR_RTX. */ | |
1034 | ||
1035 | static void | |
1036 | initial_return_save (rtl) | |
1037 | register rtx rtl; | |
1038 | { | |
1039 | unsigned reg = -1; | |
1040 | long offset = 0; | |
1041 | ||
1042 | switch (GET_CODE (rtl)) | |
1043 | { | |
1044 | case REG: | |
1045 | /* RA is in a register. */ | |
1046 | reg = reg_number (rtl); | |
1047 | break; | |
1048 | case MEM: | |
1049 | /* RA is on the stack. */ | |
1050 | rtl = XEXP (rtl, 0); | |
1051 | switch (GET_CODE (rtl)) | |
1052 | { | |
1053 | case REG: | |
3a88cbd1 JL |
1054 | if (REGNO (rtl) != STACK_POINTER_REGNUM) |
1055 | abort (); | |
3f76745e JM |
1056 | offset = 0; |
1057 | break; | |
1058 | case PLUS: | |
3a88cbd1 JL |
1059 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
1060 | abort (); | |
3f76745e JM |
1061 | offset = INTVAL (XEXP (rtl, 1)); |
1062 | break; | |
1063 | case MINUS: | |
3a88cbd1 JL |
1064 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
1065 | abort (); | |
3f76745e JM |
1066 | offset = -INTVAL (XEXP (rtl, 1)); |
1067 | break; | |
1068 | default: | |
1069 | abort (); | |
1070 | } | |
1071 | break; | |
c53aa195 JM |
1072 | case PLUS: |
1073 | /* The return address is at some offset from any value we can | |
1074 | actually load. For instance, on the SPARC it is in %i7+8. Just | |
1075 | ignore the offset for now; it doesn't matter for unwinding frames. */ | |
3a88cbd1 JL |
1076 | if (GET_CODE (XEXP (rtl, 1)) != CONST_INT) |
1077 | abort (); | |
c53aa195 JM |
1078 | initial_return_save (XEXP (rtl, 0)); |
1079 | return; | |
a3f97cbb | 1080 | default: |
3f76745e | 1081 | abort (); |
a3f97cbb | 1082 | } |
3f76745e | 1083 | |
a6ab3aad | 1084 | reg_save (NULL, DWARF_FRAME_RETURN_COLUMN, reg, offset - cfa_offset); |
a3f97cbb JW |
1085 | } |
1086 | ||
0021b564 JM |
1087 | /* Check INSN to see if it looks like a push or a stack adjustment, and |
1088 | make a note of it if it does. EH uses this information to find out how | |
1089 | much extra space it needs to pop off the stack. */ | |
1090 | ||
1091 | static void | |
1092 | dwarf2out_stack_adjust (insn) | |
1093 | rtx insn; | |
1094 | { | |
0021b564 JM |
1095 | long offset; |
1096 | char *label; | |
1097 | ||
b57d9225 JM |
1098 | if (! asynchronous_exceptions && GET_CODE (insn) == CALL_INSN) |
1099 | { | |
1100 | /* Extract the size of the args from the CALL rtx itself. */ | |
1101 | ||
1102 | insn = PATTERN (insn); | |
1103 | if (GET_CODE (insn) == PARALLEL) | |
1104 | insn = XVECEXP (insn, 0, 0); | |
1105 | if (GET_CODE (insn) == SET) | |
1106 | insn = SET_SRC (insn); | |
1107 | assert (GET_CODE (insn) == CALL); | |
1108 | dwarf2out_args_size ("", INTVAL (XEXP (insn, 1))); | |
1109 | return; | |
1110 | } | |
1111 | ||
1112 | /* If only calls can throw, and we have a frame pointer, | |
1113 | save up adjustments until we see the CALL_INSN. */ | |
1114 | else if (! asynchronous_exceptions | |
1115 | && cfa_reg != STACK_POINTER_REGNUM) | |
1116 | return; | |
1117 | ||
6020d360 | 1118 | if (GET_CODE (insn) == BARRIER) |
0021b564 | 1119 | { |
6020d360 JM |
1120 | /* When we see a BARRIER, we know to reset args_size to 0. Usually |
1121 | the compiler will have already emitted a stack adjustment, but | |
1122 | doesn't bother for calls to noreturn functions. */ | |
1123 | #ifdef STACK_GROWS_DOWNWARD | |
1124 | offset = -args_size; | |
1125 | #else | |
1126 | offset = args_size; | |
1127 | #endif | |
0021b564 | 1128 | } |
6020d360 | 1129 | else if (GET_CODE (PATTERN (insn)) == SET) |
0021b564 | 1130 | { |
6020d360 JM |
1131 | rtx src, dest; |
1132 | enum rtx_code code; | |
1133 | ||
1134 | insn = PATTERN (insn); | |
1135 | src = SET_SRC (insn); | |
1136 | dest = SET_DEST (insn); | |
0021b564 | 1137 | |
6020d360 JM |
1138 | if (dest == stack_pointer_rtx) |
1139 | { | |
1140 | /* (set (reg sp) (plus (reg sp) (const_int))) */ | |
1141 | code = GET_CODE (src); | |
1142 | if (! (code == PLUS || code == MINUS) | |
1143 | || XEXP (src, 0) != stack_pointer_rtx | |
1144 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
1145 | return; | |
1146 | ||
1147 | offset = INTVAL (XEXP (src, 1)); | |
1148 | } | |
1149 | else if (GET_CODE (dest) == MEM) | |
1150 | { | |
1151 | /* (set (mem (pre_dec (reg sp))) (foo)) */ | |
1152 | src = XEXP (dest, 0); | |
1153 | code = GET_CODE (src); | |
1154 | ||
1155 | if (! (code == PRE_DEC || code == PRE_INC) | |
1156 | || XEXP (src, 0) != stack_pointer_rtx) | |
1157 | return; | |
1158 | ||
1159 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1160 | } | |
1161 | else | |
0021b564 JM |
1162 | return; |
1163 | ||
6020d360 JM |
1164 | if (code == PLUS || code == PRE_INC) |
1165 | offset = -offset; | |
0021b564 JM |
1166 | } |
1167 | else | |
1168 | return; | |
1169 | ||
6020d360 JM |
1170 | if (offset == 0) |
1171 | return; | |
1172 | ||
0021b564 JM |
1173 | if (cfa_reg == STACK_POINTER_REGNUM) |
1174 | cfa_offset += offset; | |
1175 | ||
1176 | #ifndef STACK_GROWS_DOWNWARD | |
1177 | offset = -offset; | |
1178 | #endif | |
1179 | args_size += offset; | |
1180 | if (args_size < 0) | |
1181 | args_size = 0; | |
1182 | ||
1183 | label = dwarf2out_cfi_label (); | |
1184 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1185 | dwarf2out_args_size (label, args_size); | |
1186 | } | |
1187 | ||
3f76745e JM |
1188 | /* Record call frame debugging information for INSN, which either |
1189 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
1190 | register to the stack. If INSN is NULL_RTX, initialize our state. */ | |
71dfc51f | 1191 | |
3f76745e JM |
1192 | void |
1193 | dwarf2out_frame_debug (insn) | |
1194 | rtx insn; | |
a3f97cbb | 1195 | { |
3f76745e JM |
1196 | char *label; |
1197 | rtx src, dest; | |
1198 | long offset; | |
1199 | ||
1200 | /* A temporary register used in adjusting SP or setting up the store_reg. */ | |
1201 | static unsigned cfa_temp_reg; | |
1202 | static long cfa_temp_value; | |
1203 | ||
1204 | if (insn == NULL_RTX) | |
a3f97cbb | 1205 | { |
3f76745e | 1206 | /* Set up state for generating call frame debug info. */ |
a6ab3aad | 1207 | lookup_cfa (&cfa_reg, &cfa_offset); |
3a88cbd1 JL |
1208 | if (cfa_reg != DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM)) |
1209 | abort (); | |
3f76745e | 1210 | cfa_reg = STACK_POINTER_REGNUM; |
a6ab3aad JM |
1211 | cfa_store_reg = cfa_reg; |
1212 | cfa_store_offset = cfa_offset; | |
3f76745e JM |
1213 | cfa_temp_reg = -1; |
1214 | cfa_temp_value = 0; | |
1215 | return; | |
1216 | } | |
1217 | ||
0021b564 JM |
1218 | if (! RTX_FRAME_RELATED_P (insn)) |
1219 | { | |
6020d360 | 1220 | dwarf2out_stack_adjust (insn); |
0021b564 JM |
1221 | return; |
1222 | } | |
1223 | ||
3f76745e JM |
1224 | label = dwarf2out_cfi_label (); |
1225 | ||
07ebc930 RH |
1226 | src = find_reg_note (insn, REG_FRAME_RELATED_EXPR, NULL_RTX); |
1227 | if (src) | |
1228 | insn = XEXP (src, 0); | |
1229 | else | |
1230 | insn = PATTERN (insn); | |
1231 | ||
267c09ab JM |
1232 | /* Assume that in a PARALLEL prologue insn, only the first elt is |
1233 | significant. Currently this is true. */ | |
1234 | if (GET_CODE (insn) == PARALLEL) | |
1235 | insn = XVECEXP (insn, 0, 0); | |
3a88cbd1 JL |
1236 | if (GET_CODE (insn) != SET) |
1237 | abort (); | |
3f76745e JM |
1238 | |
1239 | src = SET_SRC (insn); | |
1240 | dest = SET_DEST (insn); | |
1241 | ||
1242 | switch (GET_CODE (dest)) | |
1243 | { | |
1244 | case REG: | |
1245 | /* Update the CFA rule wrt SP or FP. Make sure src is | |
1246 | relative to the current CFA register. */ | |
1247 | switch (GET_CODE (src)) | |
1248 | { | |
1249 | /* Setting FP from SP. */ | |
1250 | case REG: | |
3a88cbd1 JL |
1251 | if (cfa_reg != REGNO (src)) |
1252 | abort (); | |
1253 | if (REGNO (dest) != STACK_POINTER_REGNUM | |
1254 | && !(frame_pointer_needed | |
1255 | && REGNO (dest) == HARD_FRAME_POINTER_REGNUM)) | |
1256 | abort (); | |
3f76745e JM |
1257 | cfa_reg = REGNO (dest); |
1258 | break; | |
1259 | ||
1260 | case PLUS: | |
1261 | case MINUS: | |
1262 | if (dest == stack_pointer_rtx) | |
1263 | { | |
1264 | /* Adjusting SP. */ | |
1265 | switch (GET_CODE (XEXP (src, 1))) | |
1266 | { | |
1267 | case CONST_INT: | |
1268 | offset = INTVAL (XEXP (src, 1)); | |
1269 | break; | |
1270 | case REG: | |
3a88cbd1 JL |
1271 | if (REGNO (XEXP (src, 1)) != cfa_temp_reg) |
1272 | abort (); | |
3f76745e JM |
1273 | offset = cfa_temp_value; |
1274 | break; | |
1275 | default: | |
1276 | abort (); | |
1277 | } | |
1278 | ||
0021b564 JM |
1279 | if (XEXP (src, 0) == hard_frame_pointer_rtx) |
1280 | { | |
1281 | /* Restoring SP from FP in the epilogue. */ | |
3a88cbd1 JL |
1282 | if (cfa_reg != HARD_FRAME_POINTER_REGNUM) |
1283 | abort (); | |
0021b564 JM |
1284 | cfa_reg = STACK_POINTER_REGNUM; |
1285 | } | |
3a88cbd1 JL |
1286 | else if (XEXP (src, 0) != stack_pointer_rtx) |
1287 | abort (); | |
0021b564 | 1288 | |
3f76745e JM |
1289 | if (GET_CODE (src) == PLUS) |
1290 | offset = -offset; | |
1291 | if (cfa_reg == STACK_POINTER_REGNUM) | |
1292 | cfa_offset += offset; | |
1293 | if (cfa_store_reg == STACK_POINTER_REGNUM) | |
1294 | cfa_store_offset += offset; | |
3f76745e | 1295 | } |
63d96a95 GK |
1296 | else if (dest == hard_frame_pointer_rtx) |
1297 | { | |
1298 | /* Either setting the FP from an offset of the SP, | |
1299 | or adjusting the FP */ | |
1300 | if (! frame_pointer_needed | |
1301 | || REGNO (dest) != HARD_FRAME_POINTER_REGNUM) | |
1302 | abort (); | |
1303 | ||
1304 | if (XEXP (src, 0) == stack_pointer_rtx | |
1305 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
1306 | { | |
1307 | if (cfa_reg != STACK_POINTER_REGNUM) | |
1308 | abort (); | |
1309 | offset = INTVAL (XEXP (src, 1)); | |
1310 | if (GET_CODE (src) == PLUS) | |
1311 | offset = -offset; | |
1312 | cfa_offset += offset; | |
1313 | cfa_reg = HARD_FRAME_POINTER_REGNUM; | |
1314 | } | |
1315 | else if (XEXP (src, 0) == hard_frame_pointer_rtx | |
1316 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
1317 | { | |
1318 | if (cfa_reg != HARD_FRAME_POINTER_REGNUM) | |
1319 | abort (); | |
1320 | offset = INTVAL (XEXP (src, 1)); | |
1321 | if (GET_CODE (src) == PLUS) | |
1322 | offset = -offset; | |
1323 | cfa_offset += offset; | |
1324 | } | |
1325 | ||
1326 | else | |
1327 | abort(); | |
1328 | } | |
3f76745e JM |
1329 | else |
1330 | { | |
3a88cbd1 | 1331 | if (GET_CODE (src) != PLUS |
31d52528 | 1332 | || XEXP (src, 1) != stack_pointer_rtx) |
3a88cbd1 JL |
1333 | abort (); |
1334 | if (GET_CODE (XEXP (src, 0)) != REG | |
1335 | || REGNO (XEXP (src, 0)) != cfa_temp_reg) | |
1336 | abort (); | |
218c2cdb JW |
1337 | if (cfa_reg != STACK_POINTER_REGNUM) |
1338 | abort (); | |
3f76745e | 1339 | cfa_store_reg = REGNO (dest); |
218c2cdb | 1340 | cfa_store_offset = cfa_offset - cfa_temp_value; |
3f76745e JM |
1341 | } |
1342 | break; | |
1343 | ||
1344 | case CONST_INT: | |
1345 | cfa_temp_reg = REGNO (dest); | |
1346 | cfa_temp_value = INTVAL (src); | |
1347 | break; | |
1348 | ||
ef76d03b | 1349 | case IOR: |
3a88cbd1 JL |
1350 | if (GET_CODE (XEXP (src, 0)) != REG |
1351 | || REGNO (XEXP (src, 0)) != cfa_temp_reg | |
1352 | || REGNO (dest) != cfa_temp_reg | |
1353 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
1354 | abort (); | |
ef76d03b JW |
1355 | cfa_temp_value |= INTVAL (XEXP (src, 1)); |
1356 | break; | |
1357 | ||
3f76745e JM |
1358 | default: |
1359 | abort (); | |
1360 | } | |
1361 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1362 | break; | |
1363 | ||
1364 | case MEM: | |
1365 | /* Saving a register to the stack. Make sure dest is relative to the | |
1366 | CFA register. */ | |
3a88cbd1 JL |
1367 | if (GET_CODE (src) != REG) |
1368 | abort (); | |
3f76745e JM |
1369 | switch (GET_CODE (XEXP (dest, 0))) |
1370 | { | |
1371 | /* With a push. */ | |
1372 | case PRE_INC: | |
1373 | case PRE_DEC: | |
1374 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
0021b564 | 1375 | if (GET_CODE (XEXP (dest, 0)) == PRE_INC) |
3f76745e JM |
1376 | offset = -offset; |
1377 | ||
3a88cbd1 JL |
1378 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM |
1379 | || cfa_store_reg != STACK_POINTER_REGNUM) | |
1380 | abort (); | |
3f76745e JM |
1381 | cfa_store_offset += offset; |
1382 | if (cfa_reg == STACK_POINTER_REGNUM) | |
1383 | cfa_offset = cfa_store_offset; | |
1384 | ||
1385 | offset = -cfa_store_offset; | |
1386 | break; | |
1387 | ||
1388 | /* With an offset. */ | |
1389 | case PLUS: | |
1390 | case MINUS: | |
1391 | offset = INTVAL (XEXP (XEXP (dest, 0), 1)); | |
1392 | if (GET_CODE (src) == MINUS) | |
1393 | offset = -offset; | |
1394 | ||
3a88cbd1 JL |
1395 | if (cfa_store_reg != REGNO (XEXP (XEXP (dest, 0), 0))) |
1396 | abort (); | |
3f76745e JM |
1397 | offset -= cfa_store_offset; |
1398 | break; | |
1399 | ||
07ebc930 RH |
1400 | /* Without an offset. */ |
1401 | case REG: | |
1402 | if (cfa_store_reg != REGNO (XEXP (dest, 0))) | |
1403 | abort(); | |
1404 | offset = -cfa_store_offset; | |
1405 | break; | |
1406 | ||
3f76745e JM |
1407 | default: |
1408 | abort (); | |
1409 | } | |
1410 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1411 | dwarf2out_reg_save (label, REGNO (src), offset); | |
1412 | break; | |
1413 | ||
1414 | default: | |
1415 | abort (); | |
1416 | } | |
1417 | } | |
1418 | ||
1419 | /* Return the size of an unsigned LEB128 quantity. */ | |
1420 | ||
1421 | static inline unsigned long | |
1422 | size_of_uleb128 (value) | |
1423 | register unsigned long value; | |
1424 | { | |
1425 | register unsigned long size = 0; | |
1426 | register unsigned byte; | |
1427 | ||
1428 | do | |
1429 | { | |
1430 | byte = (value & 0x7f); | |
1431 | value >>= 7; | |
1432 | size += 1; | |
1433 | } | |
1434 | while (value != 0); | |
1435 | ||
1436 | return size; | |
1437 | } | |
1438 | ||
1439 | /* Return the size of a signed LEB128 quantity. */ | |
1440 | ||
1441 | static inline unsigned long | |
1442 | size_of_sleb128 (value) | |
1443 | register long value; | |
1444 | { | |
1445 | register unsigned long size = 0; | |
1446 | register unsigned byte; | |
1447 | ||
1448 | do | |
1449 | { | |
1450 | byte = (value & 0x7f); | |
1451 | value >>= 7; | |
1452 | size += 1; | |
1453 | } | |
1454 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
1455 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1456 | ||
1457 | return size; | |
1458 | } | |
1459 | ||
3f76745e JM |
1460 | /* Output an unsigned LEB128 quantity. */ |
1461 | ||
1462 | static void | |
1463 | output_uleb128 (value) | |
1464 | register unsigned long value; | |
1465 | { | |
1466 | unsigned long save_value = value; | |
1467 | ||
1468 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
1469 | do | |
1470 | { | |
1471 | register unsigned byte = (value & 0x7f); | |
1472 | value >>= 7; | |
1473 | if (value != 0) | |
1474 | /* More bytes to follow. */ | |
1475 | byte |= 0x80; | |
1476 | ||
1477 | fprintf (asm_out_file, "0x%x", byte); | |
1478 | if (value != 0) | |
1479 | fprintf (asm_out_file, ","); | |
1480 | } | |
1481 | while (value != 0); | |
1482 | ||
c5cec899 | 1483 | if (flag_debug_asm) |
2d8b0f3a | 1484 | fprintf (asm_out_file, "\t%s ULEB128 0x%lx", ASM_COMMENT_START, save_value); |
3f76745e JM |
1485 | } |
1486 | ||
1487 | /* Output an signed LEB128 quantity. */ | |
1488 | ||
1489 | static void | |
1490 | output_sleb128 (value) | |
1491 | register long value; | |
1492 | { | |
1493 | register int more; | |
1494 | register unsigned byte; | |
1495 | long save_value = value; | |
1496 | ||
1497 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
1498 | do | |
1499 | { | |
1500 | byte = (value & 0x7f); | |
1501 | /* arithmetic shift */ | |
1502 | value >>= 7; | |
1503 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
1504 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1505 | if (more) | |
1506 | byte |= 0x80; | |
1507 | ||
1508 | fprintf (asm_out_file, "0x%x", byte); | |
1509 | if (more) | |
1510 | fprintf (asm_out_file, ","); | |
1511 | } | |
1512 | ||
1513 | while (more); | |
c5cec899 | 1514 | if (flag_debug_asm) |
2d8b0f3a | 1515 | fprintf (asm_out_file, "\t%s SLEB128 %ld", ASM_COMMENT_START, save_value); |
3f76745e JM |
1516 | } |
1517 | ||
1518 | /* Output a Call Frame Information opcode and its operand(s). */ | |
1519 | ||
1520 | static void | |
1521 | output_cfi (cfi, fde) | |
1522 | register dw_cfi_ref cfi; | |
1523 | register dw_fde_ref fde; | |
1524 | { | |
1525 | if (cfi->dw_cfi_opc == DW_CFA_advance_loc) | |
1526 | { | |
1527 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1528 | cfi->dw_cfi_opc | |
1529 | | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)); | |
c5cec899 | 1530 | if (flag_debug_asm) |
2d8b0f3a | 1531 | fprintf (asm_out_file, "\t%s DW_CFA_advance_loc 0x%lx", |
3f76745e JM |
1532 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_offset); |
1533 | fputc ('\n', asm_out_file); | |
1534 | } | |
1535 | ||
1536 | else if (cfi->dw_cfi_opc == DW_CFA_offset) | |
1537 | { | |
1538 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1539 | cfi->dw_cfi_opc | |
1540 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1541 | if (flag_debug_asm) |
2d8b0f3a | 1542 | fprintf (asm_out_file, "\t%s DW_CFA_offset, column 0x%lx", |
3f76745e JM |
1543 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); |
1544 | ||
1545 | fputc ('\n', asm_out_file); | |
1546 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1547 | fputc ('\n', asm_out_file); | |
1548 | } | |
1549 | else if (cfi->dw_cfi_opc == DW_CFA_restore) | |
1550 | { | |
1551 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1552 | cfi->dw_cfi_opc | |
1553 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1554 | if (flag_debug_asm) |
2d8b0f3a | 1555 | fprintf (asm_out_file, "\t%s DW_CFA_restore, column 0x%lx", |
3f76745e JM |
1556 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); |
1557 | ||
1558 | fputc ('\n', asm_out_file); | |
1559 | } | |
1560 | else | |
1561 | { | |
1562 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, cfi->dw_cfi_opc); | |
c5cec899 | 1563 | if (flag_debug_asm) |
3f76745e JM |
1564 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
1565 | dwarf_cfi_name (cfi->dw_cfi_opc)); | |
1566 | ||
1567 | fputc ('\n', asm_out_file); | |
1568 | switch (cfi->dw_cfi_opc) | |
1569 | { | |
1570 | case DW_CFA_set_loc: | |
1571 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, cfi->dw_cfi_oprnd1.dw_cfi_addr); | |
1572 | fputc ('\n', asm_out_file); | |
1573 | break; | |
1574 | case DW_CFA_advance_loc1: | |
bb727b5a JM |
1575 | ASM_OUTPUT_DWARF_DELTA1 (asm_out_file, |
1576 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1577 | fde->dw_fde_current_label); | |
1578 | fputc ('\n', asm_out_file); | |
1579 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
3f76745e JM |
1580 | break; |
1581 | case DW_CFA_advance_loc2: | |
1582 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, | |
1583 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1584 | fde->dw_fde_current_label); | |
1585 | fputc ('\n', asm_out_file); | |
1586 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1587 | break; | |
1588 | case DW_CFA_advance_loc4: | |
1589 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, | |
1590 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1591 | fde->dw_fde_current_label); | |
1592 | fputc ('\n', asm_out_file); | |
1593 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1594 | break; | |
1595 | #ifdef MIPS_DEBUGGING_INFO | |
1596 | case DW_CFA_MIPS_advance_loc8: | |
1597 | /* TODO: not currently implemented. */ | |
1598 | abort (); | |
1599 | break; | |
1600 | #endif | |
1601 | case DW_CFA_offset_extended: | |
1602 | case DW_CFA_def_cfa: | |
1603 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1604 | fputc ('\n', asm_out_file); | |
1605 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1606 | fputc ('\n', asm_out_file); | |
1607 | break; | |
1608 | case DW_CFA_restore_extended: | |
1609 | case DW_CFA_undefined: | |
1610 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1611 | fputc ('\n', asm_out_file); | |
1612 | break; | |
1613 | case DW_CFA_same_value: | |
1614 | case DW_CFA_def_cfa_register: | |
1615 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1616 | fputc ('\n', asm_out_file); | |
1617 | break; | |
1618 | case DW_CFA_register: | |
1619 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1620 | fputc ('\n', asm_out_file); | |
1621 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_reg_num); | |
1622 | fputc ('\n', asm_out_file); | |
1623 | break; | |
1624 | case DW_CFA_def_cfa_offset: | |
1625 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1626 | fputc ('\n', asm_out_file); | |
1627 | break; | |
c53aa195 JM |
1628 | case DW_CFA_GNU_window_save: |
1629 | break; | |
0021b564 JM |
1630 | case DW_CFA_GNU_args_size: |
1631 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1632 | fputc ('\n', asm_out_file); | |
1633 | break; | |
3f76745e JM |
1634 | default: |
1635 | break; | |
1636 | } | |
1637 | } | |
1638 | } | |
1639 | ||
0021b564 JM |
1640 | #if !defined (EH_FRAME_SECTION) |
1641 | #if defined (EH_FRAME_SECTION_ASM_OP) | |
1642 | #define EH_FRAME_SECTION() eh_frame_section(); | |
1643 | #else | |
1644 | #if defined (ASM_OUTPUT_SECTION_NAME) | |
1645 | #define EH_FRAME_SECTION() \ | |
1646 | do { \ | |
1647 | named_section (NULL_TREE, ".eh_frame", 0); \ | |
1648 | } while (0) | |
1649 | #endif | |
1650 | #endif | |
1651 | #endif | |
1652 | ||
d460fb3c JM |
1653 | /* If we aren't using crtstuff to run ctors, don't use it for EH. */ |
1654 | #if !defined (HAS_INIT_SECTION) && !defined (INIT_SECTION_ASM_OP) | |
1655 | #undef EH_FRAME_SECTION | |
1656 | #endif | |
1657 | ||
3f76745e JM |
1658 | /* Output the call frame information used to used to record information |
1659 | that relates to calculating the frame pointer, and records the | |
1660 | location of saved registers. */ | |
1661 | ||
1662 | static void | |
1663 | output_call_frame_info (for_eh) | |
1664 | int for_eh; | |
1665 | { | |
2d8b0f3a | 1666 | register unsigned long i; |
3f76745e | 1667 | register dw_fde_ref fde; |
3f76745e | 1668 | register dw_cfi_ref cfi; |
a6ab3aad | 1669 | char l1[20], l2[20]; |
2ed2af28 PDM |
1670 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1671 | char ld[20]; | |
1672 | #endif | |
a6ab3aad JM |
1673 | |
1674 | /* Do we want to include a pointer to the exception table? */ | |
1675 | int eh_ptr = for_eh && exception_table_p (); | |
3f76745e | 1676 | |
3f76745e | 1677 | fputc ('\n', asm_out_file); |
e9e30253 | 1678 | |
aa0c1401 JL |
1679 | /* We're going to be generating comments, so turn on app. */ |
1680 | if (flag_debug_asm) | |
1681 | app_enable (); | |
956d6950 | 1682 | |
3f76745e JM |
1683 | if (for_eh) |
1684 | { | |
1685 | #ifdef EH_FRAME_SECTION | |
0021b564 | 1686 | EH_FRAME_SECTION (); |
3f76745e | 1687 | #else |
496651db | 1688 | tree label = get_file_function_name ('F'); |
0021b564 | 1689 | |
3f76745e | 1690 | data_section (); |
f4744807 | 1691 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); |
0021b564 JM |
1692 | ASM_GLOBALIZE_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); |
1693 | ASM_OUTPUT_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); | |
3f76745e JM |
1694 | #endif |
1695 | assemble_label ("__FRAME_BEGIN__"); | |
1696 | } | |
1697 | else | |
1698 | ASM_OUTPUT_SECTION (asm_out_file, FRAME_SECTION); | |
1699 | ||
1700 | /* Output the CIE. */ | |
a6ab3aad JM |
1701 | ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh); |
1702 | ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh); | |
2ed2af28 PDM |
1703 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1704 | ASM_GENERATE_INTERNAL_LABEL (ld, CIE_LENGTH_LABEL, for_eh); | |
1705 | if (for_eh) | |
7bb9fb0e | 1706 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1707 | else |
1708 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1709 | #else | |
267c09ab JM |
1710 | if (for_eh) |
1711 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1712 | else | |
1713 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1714 | #endif |
c5cec899 | 1715 | if (flag_debug_asm) |
3f76745e JM |
1716 | fprintf (asm_out_file, "\t%s Length of Common Information Entry", |
1717 | ASM_COMMENT_START); | |
1718 | ||
1719 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1720 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1721 | ||
d84e64d4 JM |
1722 | if (for_eh) |
1723 | /* Now that the CIE pointer is PC-relative for EH, | |
1724 | use 0 to identify the CIE. */ | |
1725 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); | |
1726 | else | |
1727 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1728 | ||
c5cec899 | 1729 | if (flag_debug_asm) |
3f76745e JM |
1730 | fprintf (asm_out_file, "\t%s CIE Identifier Tag", ASM_COMMENT_START); |
1731 | ||
1732 | fputc ('\n', asm_out_file); | |
d84e64d4 | 1733 | if (! for_eh && DWARF_OFFSET_SIZE == 8) |
3f76745e JM |
1734 | { |
1735 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1736 | fputc ('\n', asm_out_file); | |
1737 | } | |
1738 | ||
1739 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_CIE_VERSION); | |
c5cec899 | 1740 | if (flag_debug_asm) |
3f76745e JM |
1741 | fprintf (asm_out_file, "\t%s CIE Version", ASM_COMMENT_START); |
1742 | ||
1743 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1744 | if (eh_ptr) |
1745 | { | |
d84e64d4 JM |
1746 | /* The CIE contains a pointer to the exception region info for the |
1747 | frame. Make the augmentation string three bytes (including the | |
1748 | trailing null) so the pointer is 4-byte aligned. The Solaris ld | |
1749 | can't handle unaligned relocs. */ | |
c5cec899 | 1750 | if (flag_debug_asm) |
8d4e65a6 JL |
1751 | { |
1752 | ASM_OUTPUT_DWARF_STRING (asm_out_file, "eh"); | |
1753 | fprintf (asm_out_file, "\t%s CIE Augmentation", ASM_COMMENT_START); | |
1754 | } | |
1755 | else | |
1756 | { | |
c2c85462 | 1757 | ASM_OUTPUT_ASCII (asm_out_file, "eh", 3); |
8d4e65a6 | 1758 | } |
d84e64d4 JM |
1759 | fputc ('\n', asm_out_file); |
1760 | ||
1761 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, "__EXCEPTION_TABLE__"); | |
1762 | if (flag_debug_asm) | |
1763 | fprintf (asm_out_file, "\t%s pointer to exception region info", | |
1764 | ASM_COMMENT_START); | |
a6ab3aad JM |
1765 | } |
1766 | else | |
1767 | { | |
1768 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 1769 | if (flag_debug_asm) |
a6ab3aad JM |
1770 | fprintf (asm_out_file, "\t%s CIE Augmentation (none)", |
1771 | ASM_COMMENT_START); | |
1772 | } | |
3f76745e JM |
1773 | |
1774 | fputc ('\n', asm_out_file); | |
1775 | output_uleb128 (1); | |
c5cec899 | 1776 | if (flag_debug_asm) |
3f76745e JM |
1777 | fprintf (asm_out_file, " (CIE Code Alignment Factor)"); |
1778 | ||
1779 | fputc ('\n', asm_out_file); | |
1780 | output_sleb128 (DWARF_CIE_DATA_ALIGNMENT); | |
c5cec899 | 1781 | if (flag_debug_asm) |
3f76745e JM |
1782 | fprintf (asm_out_file, " (CIE Data Alignment Factor)"); |
1783 | ||
1784 | fputc ('\n', asm_out_file); | |
1785 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_FRAME_RETURN_COLUMN); | |
c5cec899 | 1786 | if (flag_debug_asm) |
3f76745e JM |
1787 | fprintf (asm_out_file, "\t%s CIE RA Column", ASM_COMMENT_START); |
1788 | ||
1789 | fputc ('\n', asm_out_file); | |
1790 | ||
1791 | for (cfi = cie_cfi_head; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1792 | output_cfi (cfi, NULL); | |
1793 | ||
1794 | /* Pad the CIE out to an address sized boundary. */ | |
a6ab3aad JM |
1795 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); |
1796 | ASM_OUTPUT_LABEL (asm_out_file, l2); | |
2ed2af28 PDM |
1797 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1798 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1799 | if (flag_debug_asm) |
1800 | fprintf (asm_out_file, "\t%s CIE Length Symbol", ASM_COMMENT_START); | |
1801 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1802 | #endif |
3f76745e JM |
1803 | |
1804 | /* Loop through all of the FDE's. */ | |
1805 | for (i = 0; i < fde_table_in_use; ++i) | |
1806 | { | |
1807 | fde = &fde_table[i]; | |
3f76745e | 1808 | |
a6ab3aad JM |
1809 | ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i*2); |
1810 | ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i*2); | |
2ed2af28 PDM |
1811 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1812 | ASM_GENERATE_INTERNAL_LABEL (ld, FDE_LENGTH_LABEL, for_eh + i*2); | |
1813 | if (for_eh) | |
7bb9fb0e | 1814 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1815 | else |
1816 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1817 | #else | |
267c09ab JM |
1818 | if (for_eh) |
1819 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1820 | else | |
1821 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1822 | #endif |
c5cec899 | 1823 | if (flag_debug_asm) |
3f76745e | 1824 | fprintf (asm_out_file, "\t%s FDE Length", ASM_COMMENT_START); |
3f76745e | 1825 | fputc ('\n', asm_out_file); |
a6ab3aad JM |
1826 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1827 | ||
3f76745e | 1828 | if (for_eh) |
ede19932 | 1829 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l1, "__FRAME_BEGIN__"); |
3f76745e JM |
1830 | else |
1831 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (FRAME_SECTION)); | |
c5cec899 | 1832 | if (flag_debug_asm) |
3f76745e JM |
1833 | fprintf (asm_out_file, "\t%s FDE CIE offset", ASM_COMMENT_START); |
1834 | ||
1835 | fputc ('\n', asm_out_file); | |
1836 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, fde->dw_fde_begin); | |
c5cec899 | 1837 | if (flag_debug_asm) |
3f76745e JM |
1838 | fprintf (asm_out_file, "\t%s FDE initial location", ASM_COMMENT_START); |
1839 | ||
1840 | fputc ('\n', asm_out_file); | |
1841 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, | |
1842 | fde->dw_fde_end, fde->dw_fde_begin); | |
c5cec899 | 1843 | if (flag_debug_asm) |
3f76745e JM |
1844 | fprintf (asm_out_file, "\t%s FDE address range", ASM_COMMENT_START); |
1845 | ||
1846 | fputc ('\n', asm_out_file); | |
1847 | ||
1848 | /* Loop through the Call Frame Instructions associated with | |
1849 | this FDE. */ | |
1850 | fde->dw_fde_current_label = fde->dw_fde_begin; | |
1851 | for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1852 | output_cfi (cfi, fde); | |
1853 | ||
a6ab3aad JM |
1854 | /* Pad the FDE out to an address sized boundary. */ |
1855 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); | |
1856 | ASM_OUTPUT_LABEL (asm_out_file, l2); | |
2ed2af28 PDM |
1857 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1858 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1859 | if (flag_debug_asm) |
1860 | fprintf (asm_out_file, "\t%s FDE Length Symbol", ASM_COMMENT_START); | |
1861 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1862 | #endif |
3f76745e JM |
1863 | } |
1864 | #ifndef EH_FRAME_SECTION | |
1865 | if (for_eh) | |
1866 | { | |
1867 | /* Emit terminating zero for table. */ | |
267c09ab | 1868 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); |
3f76745e JM |
1869 | fputc ('\n', asm_out_file); |
1870 | } | |
1871 | #endif | |
a6ab3aad JM |
1872 | #ifdef MIPS_DEBUGGING_INFO |
1873 | /* Work around Irix 6 assembler bug whereby labels at the end of a section | |
1874 | get a value of 0. Putting .align 0 after the label fixes it. */ | |
1875 | ASM_OUTPUT_ALIGN (asm_out_file, 0); | |
1876 | #endif | |
aa0c1401 JL |
1877 | |
1878 | /* Turn off app to make assembly quicker. */ | |
1879 | if (flag_debug_asm) | |
1880 | app_disable (); | |
a6ab3aad JM |
1881 | } |
1882 | ||
3f76745e JM |
1883 | /* Output a marker (i.e. a label) for the beginning of a function, before |
1884 | the prologue. */ | |
1885 | ||
1886 | void | |
1887 | dwarf2out_begin_prologue () | |
1888 | { | |
1889 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
1890 | register dw_fde_ref fde; | |
1891 | ||
4f988ea2 JM |
1892 | ++current_funcdef_number; |
1893 | ||
3f76745e JM |
1894 | function_section (current_function_decl); |
1895 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL, | |
1896 | current_funcdef_number); | |
1897 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
1898 | ||
1899 | /* Expand the fde table if necessary. */ | |
1900 | if (fde_table_in_use == fde_table_allocated) | |
1901 | { | |
1902 | fde_table_allocated += FDE_TABLE_INCREMENT; | |
1903 | fde_table | |
1904 | = (dw_fde_ref) xrealloc (fde_table, | |
1905 | fde_table_allocated * sizeof (dw_fde_node)); | |
a3f97cbb | 1906 | } |
3f76745e JM |
1907 | |
1908 | /* Record the FDE associated with this function. */ | |
1909 | current_funcdef_fde = fde_table_in_use; | |
1910 | ||
1911 | /* Add the new FDE at the end of the fde_table. */ | |
1912 | fde = &fde_table[fde_table_in_use++]; | |
1913 | fde->dw_fde_begin = xstrdup (label); | |
1914 | fde->dw_fde_current_label = NULL; | |
1915 | fde->dw_fde_end = NULL; | |
1916 | fde->dw_fde_cfi = NULL; | |
0021b564 | 1917 | |
b57d9225 | 1918 | args_size = old_args_size = 0; |
3f76745e JM |
1919 | } |
1920 | ||
1921 | /* Output a marker (i.e. a label) for the absolute end of the generated code | |
1922 | for a function definition. This gets called *after* the epilogue code has | |
1923 | been generated. */ | |
1924 | ||
1925 | void | |
1926 | dwarf2out_end_epilogue () | |
1927 | { | |
1928 | dw_fde_ref fde; | |
1929 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
1930 | ||
1931 | /* Output a label to mark the endpoint of the code generated for this | |
1932 | function. */ | |
1933 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_END_LABEL, current_funcdef_number); | |
1934 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
1935 | fde = &fde_table[fde_table_in_use - 1]; | |
1936 | fde->dw_fde_end = xstrdup (label); | |
3f76745e JM |
1937 | } |
1938 | ||
1939 | void | |
1940 | dwarf2out_frame_init () | |
1941 | { | |
1942 | /* Allocate the initial hunk of the fde_table. */ | |
1943 | fde_table | |
1944 | = (dw_fde_ref) xmalloc (FDE_TABLE_INCREMENT * sizeof (dw_fde_node)); | |
1945 | bzero ((char *) fde_table, FDE_TABLE_INCREMENT * sizeof (dw_fde_node)); | |
1946 | fde_table_allocated = FDE_TABLE_INCREMENT; | |
1947 | fde_table_in_use = 0; | |
1948 | ||
1949 | /* Generate the CFA instructions common to all FDE's. Do it now for the | |
1950 | sake of lookup_cfa. */ | |
1951 | ||
a6ab3aad | 1952 | #ifdef DWARF2_UNWIND_INFO |
91193900 AS |
1953 | /* On entry, the Canonical Frame Address is at SP. */ |
1954 | dwarf2out_def_cfa (NULL, STACK_POINTER_REGNUM, INCOMING_FRAME_SP_OFFSET); | |
1955 | initial_return_save (INCOMING_RETURN_ADDR_RTX); | |
3f76745e JM |
1956 | #endif |
1957 | } | |
1958 | ||
1959 | void | |
1960 | dwarf2out_frame_finish () | |
1961 | { | |
3f76745e | 1962 | /* Output call frame information. */ |
a6ab3aad | 1963 | #ifdef MIPS_DEBUGGING_INFO |
3f76745e JM |
1964 | if (write_symbols == DWARF2_DEBUG) |
1965 | output_call_frame_info (0); | |
1966 | if (flag_exceptions && ! exceptions_via_longjmp) | |
1967 | output_call_frame_info (1); | |
a6ab3aad JM |
1968 | #else |
1969 | if (write_symbols == DWARF2_DEBUG | |
1970 | || (flag_exceptions && ! exceptions_via_longjmp)) | |
1971 | output_call_frame_info (1); | |
1972 | #endif | |
3f76745e JM |
1973 | } |
1974 | ||
1975 | #endif /* .debug_frame support */ | |
1976 | ||
1977 | /* And now, the support for symbolic debugging information. */ | |
1978 | #ifdef DWARF2_DEBUGGING_INFO | |
1979 | ||
e179bf0f | 1980 | extern char *getpwd PROTO((void)); |
3f76745e JM |
1981 | |
1982 | /* NOTE: In the comments in this file, many references are made to | |
1983 | "Debugging Information Entries". This term is abbreviated as `DIE' | |
1984 | throughout the remainder of this file. */ | |
1985 | ||
1986 | /* An internal representation of the DWARF output is built, and then | |
1987 | walked to generate the DWARF debugging info. The walk of the internal | |
1988 | representation is done after the entire program has been compiled. | |
1989 | The types below are used to describe the internal representation. */ | |
1990 | ||
1991 | /* Each DIE may have a series of attribute/value pairs. Values | |
1992 | can take on several forms. The forms that are used in this | |
1993 | implementation are listed below. */ | |
1994 | ||
1995 | typedef enum | |
1996 | { | |
1997 | dw_val_class_addr, | |
1998 | dw_val_class_loc, | |
1999 | dw_val_class_const, | |
2000 | dw_val_class_unsigned_const, | |
2001 | dw_val_class_long_long, | |
2002 | dw_val_class_float, | |
2003 | dw_val_class_flag, | |
2004 | dw_val_class_die_ref, | |
2005 | dw_val_class_fde_ref, | |
2006 | dw_val_class_lbl_id, | |
2007 | dw_val_class_section_offset, | |
2008 | dw_val_class_str | |
a3f97cbb | 2009 | } |
3f76745e | 2010 | dw_val_class; |
a3f97cbb | 2011 | |
3f76745e JM |
2012 | /* Various DIE's use offsets relative to the beginning of the |
2013 | .debug_info section to refer to each other. */ | |
71dfc51f | 2014 | |
3f76745e JM |
2015 | typedef long int dw_offset; |
2016 | ||
2017 | /* Define typedefs here to avoid circular dependencies. */ | |
2018 | ||
2019 | typedef struct die_struct *dw_die_ref; | |
2020 | typedef struct dw_attr_struct *dw_attr_ref; | |
2021 | typedef struct dw_val_struct *dw_val_ref; | |
2022 | typedef struct dw_line_info_struct *dw_line_info_ref; | |
2023 | typedef struct dw_separate_line_info_struct *dw_separate_line_info_ref; | |
2024 | typedef struct dw_loc_descr_struct *dw_loc_descr_ref; | |
2025 | typedef struct pubname_struct *pubname_ref; | |
2026 | typedef dw_die_ref *arange_ref; | |
2027 | ||
2028 | /* Describe a double word constant value. */ | |
2029 | ||
2030 | typedef struct dw_long_long_struct | |
a3f97cbb | 2031 | { |
3f76745e JM |
2032 | unsigned long hi; |
2033 | unsigned long low; | |
2034 | } | |
2035 | dw_long_long_const; | |
2036 | ||
2037 | /* Describe a floating point constant value. */ | |
2038 | ||
2039 | typedef struct dw_fp_struct | |
2040 | { | |
2041 | long *array; | |
2042 | unsigned length; | |
2043 | } | |
2044 | dw_float_const; | |
2045 | ||
2046 | /* Each entry in the line_info_table maintains the file and | |
956d6950 | 2047 | line number associated with the label generated for that |
3f76745e JM |
2048 | entry. The label gives the PC value associated with |
2049 | the line number entry. */ | |
2050 | ||
2051 | typedef struct dw_line_info_struct | |
2052 | { | |
2053 | unsigned long dw_file_num; | |
2054 | unsigned long dw_line_num; | |
2055 | } | |
2056 | dw_line_info_entry; | |
2057 | ||
2058 | /* Line information for functions in separate sections; each one gets its | |
2059 | own sequence. */ | |
2060 | typedef struct dw_separate_line_info_struct | |
2061 | { | |
2062 | unsigned long dw_file_num; | |
2063 | unsigned long dw_line_num; | |
2064 | unsigned long function; | |
2065 | } | |
2066 | dw_separate_line_info_entry; | |
2067 | ||
956d6950 | 2068 | /* The dw_val_node describes an attribute's value, as it is |
3f76745e JM |
2069 | represented internally. */ |
2070 | ||
2071 | typedef struct dw_val_struct | |
2072 | { | |
2073 | dw_val_class val_class; | |
2074 | union | |
a3f97cbb | 2075 | { |
3f76745e JM |
2076 | char *val_addr; |
2077 | dw_loc_descr_ref val_loc; | |
2078 | long int val_int; | |
2079 | long unsigned val_unsigned; | |
2080 | dw_long_long_const val_long_long; | |
2081 | dw_float_const val_float; | |
2082 | dw_die_ref val_die_ref; | |
2083 | unsigned val_fde_index; | |
2084 | char *val_str; | |
2085 | char *val_lbl_id; | |
1553e85a | 2086 | char *val_section; |
3f76745e | 2087 | unsigned char val_flag; |
a3f97cbb | 2088 | } |
3f76745e JM |
2089 | v; |
2090 | } | |
2091 | dw_val_node; | |
2092 | ||
2093 | /* Locations in memory are described using a sequence of stack machine | |
2094 | operations. */ | |
2095 | ||
2096 | typedef struct dw_loc_descr_struct | |
2097 | { | |
2098 | dw_loc_descr_ref dw_loc_next; | |
2099 | enum dwarf_location_atom dw_loc_opc; | |
2100 | dw_val_node dw_loc_oprnd1; | |
2101 | dw_val_node dw_loc_oprnd2; | |
2102 | } | |
2103 | dw_loc_descr_node; | |
2104 | ||
2105 | /* Each DIE attribute has a field specifying the attribute kind, | |
2106 | a link to the next attribute in the chain, and an attribute value. | |
2107 | Attributes are typically linked below the DIE they modify. */ | |
2108 | ||
2109 | typedef struct dw_attr_struct | |
2110 | { | |
2111 | enum dwarf_attribute dw_attr; | |
2112 | dw_attr_ref dw_attr_next; | |
2113 | dw_val_node dw_attr_val; | |
2114 | } | |
2115 | dw_attr_node; | |
2116 | ||
2117 | /* The Debugging Information Entry (DIE) structure */ | |
2118 | ||
2119 | typedef struct die_struct | |
2120 | { | |
2121 | enum dwarf_tag die_tag; | |
2122 | dw_attr_ref die_attr; | |
2123 | dw_attr_ref die_attr_last; | |
2124 | dw_die_ref die_parent; | |
2125 | dw_die_ref die_child; | |
2126 | dw_die_ref die_child_last; | |
2127 | dw_die_ref die_sib; | |
2128 | dw_offset die_offset; | |
2129 | unsigned long die_abbrev; | |
a3f97cbb | 2130 | } |
3f76745e JM |
2131 | die_node; |
2132 | ||
2133 | /* The pubname structure */ | |
2134 | ||
2135 | typedef struct pubname_struct | |
2136 | { | |
2137 | dw_die_ref die; | |
2138 | char * name; | |
2139 | } | |
2140 | pubname_entry; | |
2141 | ||
ef76d03b JW |
2142 | /* The limbo die list structure. */ |
2143 | typedef struct limbo_die_struct | |
2144 | { | |
2145 | dw_die_ref die; | |
2146 | struct limbo_die_struct *next; | |
2147 | } | |
2148 | limbo_die_node; | |
2149 | ||
3f76745e JM |
2150 | /* How to start an assembler comment. */ |
2151 | #ifndef ASM_COMMENT_START | |
2152 | #define ASM_COMMENT_START ";#" | |
2153 | #endif | |
2154 | ||
2155 | /* Define a macro which returns non-zero for a TYPE_DECL which was | |
2156 | implicitly generated for a tagged type. | |
2157 | ||
2158 | Note that unlike the gcc front end (which generates a NULL named | |
2159 | TYPE_DECL node for each complete tagged type, each array type, and | |
2160 | each function type node created) the g++ front end generates a | |
2161 | _named_ TYPE_DECL node for each tagged type node created. | |
2162 | These TYPE_DECLs have DECL_ARTIFICIAL set, so we know not to | |
2163 | generate a DW_TAG_typedef DIE for them. */ | |
2164 | ||
2165 | #define TYPE_DECL_IS_STUB(decl) \ | |
2166 | (DECL_NAME (decl) == NULL_TREE \ | |
2167 | || (DECL_ARTIFICIAL (decl) \ | |
2168 | && is_tagged_type (TREE_TYPE (decl)) \ | |
ef76d03b JW |
2169 | && ((decl == TYPE_STUB_DECL (TREE_TYPE (decl))) \ |
2170 | /* This is necessary for stub decls that \ | |
2171 | appear in nested inline functions. */ \ | |
2172 | || (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE \ | |
2173 | && (decl_ultimate_origin (decl) \ | |
2174 | == TYPE_STUB_DECL (TREE_TYPE (decl))))))) | |
3f76745e JM |
2175 | |
2176 | /* Information concerning the compilation unit's programming | |
2177 | language, and compiler version. */ | |
2178 | ||
2179 | extern int flag_traditional; | |
2180 | extern char *version_string; | |
2181 | extern char *language_string; | |
2182 | ||
2183 | /* Fixed size portion of the DWARF compilation unit header. */ | |
2184 | #define DWARF_COMPILE_UNIT_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 3) | |
2185 | ||
2186 | /* Fixed size portion of debugging line information prolog. */ | |
2187 | #define DWARF_LINE_PROLOG_HEADER_SIZE 5 | |
2188 | ||
2189 | /* Fixed size portion of public names info. */ | |
2190 | #define DWARF_PUBNAMES_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2) | |
2191 | ||
2192 | /* Fixed size portion of the address range info. */ | |
2193 | #define DWARF_ARANGES_HEADER_SIZE \ | |
2194 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, PTR_SIZE * 2) - DWARF_OFFSET_SIZE) | |
2195 | ||
2196 | /* Define the architecture-dependent minimum instruction length (in bytes). | |
2197 | In this implementation of DWARF, this field is used for information | |
2198 | purposes only. Since GCC generates assembly language, we have | |
2199 | no a priori knowledge of how many instruction bytes are generated | |
2200 | for each source line, and therefore can use only the DW_LNE_set_address | |
2201 | and DW_LNS_fixed_advance_pc line information commands. */ | |
2202 | ||
2203 | #ifndef DWARF_LINE_MIN_INSTR_LENGTH | |
2204 | #define DWARF_LINE_MIN_INSTR_LENGTH 4 | |
2205 | #endif | |
2206 | ||
2207 | /* Minimum line offset in a special line info. opcode. | |
2208 | This value was chosen to give a reasonable range of values. */ | |
2209 | #define DWARF_LINE_BASE -10 | |
2210 | ||
2211 | /* First special line opcde - leave room for the standard opcodes. */ | |
2212 | #define DWARF_LINE_OPCODE_BASE 10 | |
2213 | ||
2214 | /* Range of line offsets in a special line info. opcode. */ | |
2215 | #define DWARF_LINE_RANGE (254-DWARF_LINE_OPCODE_BASE+1) | |
2216 | ||
2217 | /* Flag that indicates the initial value of the is_stmt_start flag. | |
2218 | In the present implementation, we do not mark any lines as | |
2219 | the beginning of a source statement, because that information | |
2220 | is not made available by the GCC front-end. */ | |
2221 | #define DWARF_LINE_DEFAULT_IS_STMT_START 1 | |
2222 | ||
2223 | /* This location is used by calc_die_sizes() to keep track | |
2224 | the offset of each DIE within the .debug_info section. */ | |
2225 | static unsigned long next_die_offset; | |
2226 | ||
2227 | /* Record the root of the DIE's built for the current compilation unit. */ | |
2228 | static dw_die_ref comp_unit_die; | |
2229 | ||
ef76d03b JW |
2230 | /* A list of DIEs with a NULL parent waiting to be relocated. */ |
2231 | static limbo_die_node *limbo_die_list = 0; | |
3f76745e JM |
2232 | |
2233 | /* Pointer to an array of filenames referenced by this compilation unit. */ | |
2234 | static char **file_table; | |
2235 | ||
2236 | /* Total number of entries in the table (i.e. array) pointed to by | |
2237 | `file_table'. This is the *total* and includes both used and unused | |
2238 | slots. */ | |
2239 | static unsigned file_table_allocated; | |
a3f97cbb | 2240 | |
3f76745e JM |
2241 | /* Number of entries in the file_table which are actually in use. */ |
2242 | static unsigned file_table_in_use; | |
71dfc51f | 2243 | |
3f76745e JM |
2244 | /* Size (in elements) of increments by which we may expand the filename |
2245 | table. */ | |
2246 | #define FILE_TABLE_INCREMENT 64 | |
71dfc51f | 2247 | |
3f76745e JM |
2248 | /* Local pointer to the name of the main input file. Initialized in |
2249 | dwarf2out_init. */ | |
2250 | static char *primary_filename; | |
a3f97cbb | 2251 | |
3f76745e JM |
2252 | /* For Dwarf output, we must assign lexical-blocks id numbers in the order in |
2253 | which their beginnings are encountered. We output Dwarf debugging info | |
2254 | that refers to the beginnings and ends of the ranges of code for each | |
2255 | lexical block. The labels themselves are generated in final.c, which | |
2256 | assigns numbers to the blocks in the same way. */ | |
2257 | static unsigned next_block_number = 2; | |
a3f97cbb | 2258 | |
3f76745e JM |
2259 | /* A pointer to the base of a table of references to DIE's that describe |
2260 | declarations. The table is indexed by DECL_UID() which is a unique | |
956d6950 | 2261 | number identifying each decl. */ |
3f76745e | 2262 | static dw_die_ref *decl_die_table; |
71dfc51f | 2263 | |
3f76745e JM |
2264 | /* Number of elements currently allocated for the decl_die_table. */ |
2265 | static unsigned decl_die_table_allocated; | |
a3f97cbb | 2266 | |
3f76745e JM |
2267 | /* Number of elements in decl_die_table currently in use. */ |
2268 | static unsigned decl_die_table_in_use; | |
71dfc51f | 2269 | |
3f76745e JM |
2270 | /* Size (in elements) of increments by which we may expand the |
2271 | decl_die_table. */ | |
2272 | #define DECL_DIE_TABLE_INCREMENT 256 | |
a3f97cbb | 2273 | |
e3e7774e JW |
2274 | /* Structure used for the decl_scope table. scope is the current declaration |
2275 | scope, and previous is the entry that is the parent of this scope. This | |
2276 | is usually but not always the immediately preceeding entry. */ | |
2277 | ||
2278 | typedef struct decl_scope_struct | |
2279 | { | |
2280 | tree scope; | |
2281 | int previous; | |
2282 | } | |
2283 | decl_scope_node; | |
2284 | ||
3f76745e JM |
2285 | /* A pointer to the base of a table of references to declaration |
2286 | scopes. This table is a display which tracks the nesting | |
2287 | of declaration scopes at the current scope and containing | |
2288 | scopes. This table is used to find the proper place to | |
2289 | define type declaration DIE's. */ | |
e3e7774e | 2290 | static decl_scope_node *decl_scope_table; |
a3f97cbb | 2291 | |
3f76745e | 2292 | /* Number of elements currently allocated for the decl_scope_table. */ |
e3e7774e | 2293 | static int decl_scope_table_allocated; |
71dfc51f | 2294 | |
956d6950 | 2295 | /* Current level of nesting of declaration scopes. */ |
e3e7774e | 2296 | static int decl_scope_depth; |
bdb669cb | 2297 | |
3f76745e JM |
2298 | /* Size (in elements) of increments by which we may expand the |
2299 | decl_scope_table. */ | |
2300 | #define DECL_SCOPE_TABLE_INCREMENT 64 | |
bdb669cb | 2301 | |
3f76745e JM |
2302 | /* A pointer to the base of a list of references to DIE's that |
2303 | are uniquely identified by their tag, presence/absence of | |
2304 | children DIE's, and list of attribute/value pairs. */ | |
2305 | static dw_die_ref *abbrev_die_table; | |
71dfc51f | 2306 | |
3f76745e JM |
2307 | /* Number of elements currently allocated for abbrev_die_table. */ |
2308 | static unsigned abbrev_die_table_allocated; | |
bdb669cb | 2309 | |
3f76745e JM |
2310 | /* Number of elements in type_die_table currently in use. */ |
2311 | static unsigned abbrev_die_table_in_use; | |
bdb669cb | 2312 | |
3f76745e JM |
2313 | /* Size (in elements) of increments by which we may expand the |
2314 | abbrev_die_table. */ | |
2315 | #define ABBREV_DIE_TABLE_INCREMENT 256 | |
71dfc51f | 2316 | |
3f76745e JM |
2317 | /* A pointer to the base of a table that contains line information |
2318 | for each source code line in .text in the compilation unit. */ | |
2319 | static dw_line_info_ref line_info_table; | |
a3f97cbb | 2320 | |
3f76745e JM |
2321 | /* Number of elements currently allocated for line_info_table. */ |
2322 | static unsigned line_info_table_allocated; | |
71dfc51f | 2323 | |
3f76745e JM |
2324 | /* Number of elements in separate_line_info_table currently in use. */ |
2325 | static unsigned separate_line_info_table_in_use; | |
71dfc51f | 2326 | |
3f76745e JM |
2327 | /* A pointer to the base of a table that contains line information |
2328 | for each source code line outside of .text in the compilation unit. */ | |
2329 | static dw_separate_line_info_ref separate_line_info_table; | |
a3f97cbb | 2330 | |
3f76745e JM |
2331 | /* Number of elements currently allocated for separate_line_info_table. */ |
2332 | static unsigned separate_line_info_table_allocated; | |
71dfc51f | 2333 | |
3f76745e JM |
2334 | /* Number of elements in line_info_table currently in use. */ |
2335 | static unsigned line_info_table_in_use; | |
71dfc51f | 2336 | |
3f76745e JM |
2337 | /* Size (in elements) of increments by which we may expand the |
2338 | line_info_table. */ | |
2339 | #define LINE_INFO_TABLE_INCREMENT 1024 | |
a3f97cbb | 2340 | |
3f76745e JM |
2341 | /* A pointer to the base of a table that contains a list of publicly |
2342 | accessible names. */ | |
2343 | static pubname_ref pubname_table; | |
71dfc51f | 2344 | |
3f76745e JM |
2345 | /* Number of elements currently allocated for pubname_table. */ |
2346 | static unsigned pubname_table_allocated; | |
2347 | ||
2348 | /* Number of elements in pubname_table currently in use. */ | |
2349 | static unsigned pubname_table_in_use; | |
2350 | ||
2351 | /* Size (in elements) of increments by which we may expand the | |
2352 | pubname_table. */ | |
2353 | #define PUBNAME_TABLE_INCREMENT 64 | |
2354 | ||
2355 | /* A pointer to the base of a table that contains a list of publicly | |
2356 | accessible names. */ | |
2357 | static arange_ref arange_table; | |
71dfc51f | 2358 | |
3f76745e JM |
2359 | /* Number of elements currently allocated for arange_table. */ |
2360 | static unsigned arange_table_allocated; | |
a3f97cbb | 2361 | |
3f76745e JM |
2362 | /* Number of elements in arange_table currently in use. */ |
2363 | static unsigned arange_table_in_use; | |
71dfc51f | 2364 | |
3f76745e JM |
2365 | /* Size (in elements) of increments by which we may expand the |
2366 | arange_table. */ | |
2367 | #define ARANGE_TABLE_INCREMENT 64 | |
71dfc51f | 2368 | |
3f76745e JM |
2369 | /* A pointer to the base of a list of pending types which we haven't |
2370 | generated DIEs for yet, but which we will have to come back to | |
2371 | later on. */ | |
469ac993 | 2372 | |
3f76745e | 2373 | static tree *pending_types_list; |
71dfc51f | 2374 | |
3f76745e JM |
2375 | /* Number of elements currently allocated for the pending_types_list. */ |
2376 | static unsigned pending_types_allocated; | |
71dfc51f | 2377 | |
3f76745e JM |
2378 | /* Number of elements of pending_types_list currently in use. */ |
2379 | static unsigned pending_types; | |
a3f97cbb | 2380 | |
3f76745e JM |
2381 | /* Size (in elements) of increments by which we may expand the pending |
2382 | types list. Actually, a single hunk of space of this size should | |
2383 | be enough for most typical programs. */ | |
2384 | #define PENDING_TYPES_INCREMENT 64 | |
71dfc51f | 2385 | |
3f76745e JM |
2386 | /* Record whether the function being analyzed contains inlined functions. */ |
2387 | static int current_function_has_inlines; | |
2d8b0f3a | 2388 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
3f76745e | 2389 | static int comp_unit_has_inlines; |
2d8b0f3a | 2390 | #endif |
71dfc51f | 2391 | |
3f76745e JM |
2392 | /* A pointer to the ..._DECL node which we have most recently been working |
2393 | on. We keep this around just in case something about it looks screwy and | |
2394 | we want to tell the user what the source coordinates for the actual | |
2395 | declaration are. */ | |
2396 | static tree dwarf_last_decl; | |
a3f97cbb | 2397 | |
3f76745e | 2398 | /* Forward declarations for functions defined in this file. */ |
71dfc51f | 2399 | |
b170964a | 2400 | static void addr_const_to_string PROTO((dyn_string_t, rtx)); |
3f76745e JM |
2401 | static char *addr_to_string PROTO((rtx)); |
2402 | static int is_pseudo_reg PROTO((rtx)); | |
2403 | static tree type_main_variant PROTO((tree)); | |
2404 | static int is_tagged_type PROTO((tree)); | |
2405 | static char *dwarf_tag_name PROTO((unsigned)); | |
2406 | static char *dwarf_attr_name PROTO((unsigned)); | |
2407 | static char *dwarf_form_name PROTO((unsigned)); | |
2408 | static char *dwarf_stack_op_name PROTO((unsigned)); | |
487a6e06 | 2409 | #if 0 |
3f76745e | 2410 | static char *dwarf_type_encoding_name PROTO((unsigned)); |
487a6e06 | 2411 | #endif |
3f76745e JM |
2412 | static tree decl_ultimate_origin PROTO((tree)); |
2413 | static tree block_ultimate_origin PROTO((tree)); | |
2414 | static tree decl_class_context PROTO((tree)); | |
2415 | static void add_dwarf_attr PROTO((dw_die_ref, dw_attr_ref)); | |
2416 | static void add_AT_flag PROTO((dw_die_ref, | |
2417 | enum dwarf_attribute, | |
2418 | unsigned)); | |
2419 | static void add_AT_int PROTO((dw_die_ref, | |
2420 | enum dwarf_attribute, long)); | |
2421 | static void add_AT_unsigned PROTO((dw_die_ref, | |
2422 | enum dwarf_attribute, | |
2423 | unsigned long)); | |
2424 | static void add_AT_long_long PROTO((dw_die_ref, | |
2425 | enum dwarf_attribute, | |
2426 | unsigned long, unsigned long)); | |
2427 | static void add_AT_float PROTO((dw_die_ref, | |
2428 | enum dwarf_attribute, | |
2429 | unsigned, long *)); | |
2430 | static void add_AT_string PROTO((dw_die_ref, | |
2431 | enum dwarf_attribute, char *)); | |
2432 | static void add_AT_die_ref PROTO((dw_die_ref, | |
2433 | enum dwarf_attribute, | |
2434 | dw_die_ref)); | |
2435 | static void add_AT_fde_ref PROTO((dw_die_ref, | |
2436 | enum dwarf_attribute, | |
2437 | unsigned)); | |
2438 | static void add_AT_loc PROTO((dw_die_ref, | |
2439 | enum dwarf_attribute, | |
2440 | dw_loc_descr_ref)); | |
2441 | static void add_AT_addr PROTO((dw_die_ref, | |
2442 | enum dwarf_attribute, char *)); | |
2443 | static void add_AT_lbl_id PROTO((dw_die_ref, | |
2444 | enum dwarf_attribute, char *)); | |
956d6950 | 2445 | static void add_AT_section_offset PROTO((dw_die_ref, |
3f76745e JM |
2446 | enum dwarf_attribute, char *)); |
2447 | static int is_extern_subr_die PROTO((dw_die_ref)); | |
2448 | static dw_attr_ref get_AT PROTO((dw_die_ref, | |
2449 | enum dwarf_attribute)); | |
2450 | static char *get_AT_low_pc PROTO((dw_die_ref)); | |
2451 | static char *get_AT_hi_pc PROTO((dw_die_ref)); | |
2452 | static char *get_AT_string PROTO((dw_die_ref, | |
2453 | enum dwarf_attribute)); | |
2454 | static int get_AT_flag PROTO((dw_die_ref, | |
2455 | enum dwarf_attribute)); | |
2456 | static unsigned get_AT_unsigned PROTO((dw_die_ref, | |
2457 | enum dwarf_attribute)); | |
2458 | static int is_c_family PROTO((void)); | |
2459 | static int is_fortran PROTO((void)); | |
2460 | static void remove_AT PROTO((dw_die_ref, | |
2461 | enum dwarf_attribute)); | |
2462 | static void remove_children PROTO((dw_die_ref)); | |
2463 | static void add_child_die PROTO((dw_die_ref, dw_die_ref)); | |
2464 | static dw_die_ref new_die PROTO((enum dwarf_tag, dw_die_ref)); | |
2465 | static dw_die_ref lookup_type_die PROTO((tree)); | |
2466 | static void equate_type_number_to_die PROTO((tree, dw_die_ref)); | |
2467 | static dw_die_ref lookup_decl_die PROTO((tree)); | |
2468 | static void equate_decl_number_to_die PROTO((tree, dw_die_ref)); | |
2469 | static dw_loc_descr_ref new_loc_descr PROTO((enum dwarf_location_atom, | |
2470 | unsigned long, unsigned long)); | |
2471 | static void add_loc_descr PROTO((dw_loc_descr_ref *, | |
2472 | dw_loc_descr_ref)); | |
2473 | static void print_spaces PROTO((FILE *)); | |
2474 | static void print_die PROTO((dw_die_ref, FILE *)); | |
2475 | static void print_dwarf_line_table PROTO((FILE *)); | |
956d6950 | 2476 | static void add_sibling_attributes PROTO((dw_die_ref)); |
3f76745e JM |
2477 | static void build_abbrev_table PROTO((dw_die_ref)); |
2478 | static unsigned long size_of_string PROTO((char *)); | |
2479 | static unsigned long size_of_loc_descr PROTO((dw_loc_descr_ref)); | |
2480 | static unsigned long size_of_locs PROTO((dw_loc_descr_ref)); | |
2481 | static int constant_size PROTO((long unsigned)); | |
2482 | static unsigned long size_of_die PROTO((dw_die_ref)); | |
2483 | static void calc_die_sizes PROTO((dw_die_ref)); | |
2d8b0f3a | 2484 | static unsigned long size_of_line_prolog PROTO((void)); |
3f76745e JM |
2485 | static unsigned long size_of_line_info PROTO((void)); |
2486 | static unsigned long size_of_pubnames PROTO((void)); | |
2487 | static unsigned long size_of_aranges PROTO((void)); | |
2488 | static enum dwarf_form value_format PROTO((dw_val_ref)); | |
2489 | static void output_value_format PROTO((dw_val_ref)); | |
2490 | static void output_abbrev_section PROTO((void)); | |
2491 | static void output_loc_operands PROTO((dw_loc_descr_ref)); | |
2492 | static unsigned long sibling_offset PROTO((dw_die_ref)); | |
2493 | static void output_die PROTO((dw_die_ref)); | |
2494 | static void output_compilation_unit_header PROTO((void)); | |
2495 | static char *dwarf2_name PROTO((tree, int)); | |
2496 | static void add_pubname PROTO((tree, dw_die_ref)); | |
2497 | static void output_pubnames PROTO((void)); | |
2d8b0f3a JL |
2498 | static void add_arange PROTO((tree, dw_die_ref)); |
2499 | static void output_aranges PROTO((void)); | |
3f76745e JM |
2500 | static void output_line_info PROTO((void)); |
2501 | static int is_body_block PROTO((tree)); | |
2502 | static dw_die_ref base_type_die PROTO((tree)); | |
2503 | static tree root_type PROTO((tree)); | |
2504 | static int is_base_type PROTO((tree)); | |
2505 | static dw_die_ref modified_type_die PROTO((tree, int, int, dw_die_ref)); | |
2506 | static int type_is_enum PROTO((tree)); | |
4401bf24 | 2507 | static dw_loc_descr_ref reg_loc_descriptor PROTO((rtx)); |
3f76745e JM |
2508 | static dw_loc_descr_ref based_loc_descr PROTO((unsigned, long)); |
2509 | static int is_based_loc PROTO((rtx)); | |
2510 | static dw_loc_descr_ref mem_loc_descriptor PROTO((rtx)); | |
4401bf24 | 2511 | static dw_loc_descr_ref concat_loc_descriptor PROTO((rtx, rtx)); |
3f76745e JM |
2512 | static dw_loc_descr_ref loc_descriptor PROTO((rtx)); |
2513 | static unsigned ceiling PROTO((unsigned, unsigned)); | |
2514 | static tree field_type PROTO((tree)); | |
2515 | static unsigned simple_type_align_in_bits PROTO((tree)); | |
2516 | static unsigned simple_type_size_in_bits PROTO((tree)); | |
2517 | static unsigned field_byte_offset PROTO((tree)); | |
ef76d03b JW |
2518 | static void add_AT_location_description PROTO((dw_die_ref, |
2519 | enum dwarf_attribute, rtx)); | |
3f76745e JM |
2520 | static void add_data_member_location_attribute PROTO((dw_die_ref, tree)); |
2521 | static void add_const_value_attribute PROTO((dw_die_ref, rtx)); | |
2522 | static void add_location_or_const_value_attribute PROTO((dw_die_ref, tree)); | |
2523 | static void add_name_attribute PROTO((dw_die_ref, char *)); | |
2524 | static void add_bound_info PROTO((dw_die_ref, | |
2525 | enum dwarf_attribute, tree)); | |
2526 | static void add_subscript_info PROTO((dw_die_ref, tree)); | |
2527 | static void add_byte_size_attribute PROTO((dw_die_ref, tree)); | |
2528 | static void add_bit_offset_attribute PROTO((dw_die_ref, tree)); | |
2529 | static void add_bit_size_attribute PROTO((dw_die_ref, tree)); | |
2530 | static void add_prototyped_attribute PROTO((dw_die_ref, tree)); | |
2531 | static void add_abstract_origin_attribute PROTO((dw_die_ref, tree)); | |
2532 | static void add_pure_or_virtual_attribute PROTO((dw_die_ref, tree)); | |
2533 | static void add_src_coords_attributes PROTO((dw_die_ref, tree)); | |
2d8b0f3a | 2534 | static void add_name_and_src_coords_attributes PROTO((dw_die_ref, tree)); |
3f76745e JM |
2535 | static void push_decl_scope PROTO((tree)); |
2536 | static dw_die_ref scope_die_for PROTO((tree, dw_die_ref)); | |
2537 | static void pop_decl_scope PROTO((void)); | |
2538 | static void add_type_attribute PROTO((dw_die_ref, tree, int, int, | |
2539 | dw_die_ref)); | |
2540 | static char *type_tag PROTO((tree)); | |
2541 | static tree member_declared_type PROTO((tree)); | |
487a6e06 | 2542 | #if 0 |
3f76745e | 2543 | static char *decl_start_label PROTO((tree)); |
487a6e06 | 2544 | #endif |
2d8b0f3a | 2545 | static void gen_array_type_die PROTO((tree, dw_die_ref)); |
3f76745e | 2546 | static void gen_set_type_die PROTO((tree, dw_die_ref)); |
d6f4ec51 | 2547 | #if 0 |
3f76745e | 2548 | static void gen_entry_point_die PROTO((tree, dw_die_ref)); |
d6f4ec51 | 2549 | #endif |
3f76745e JM |
2550 | static void pend_type PROTO((tree)); |
2551 | static void output_pending_types_for_scope PROTO((dw_die_ref)); | |
2552 | static void gen_inlined_enumeration_type_die PROTO((tree, dw_die_ref)); | |
2553 | static void gen_inlined_structure_type_die PROTO((tree, dw_die_ref)); | |
2554 | static void gen_inlined_union_type_die PROTO((tree, dw_die_ref)); | |
2555 | static void gen_enumeration_type_die PROTO((tree, dw_die_ref)); | |
2556 | static dw_die_ref gen_formal_parameter_die PROTO((tree, dw_die_ref)); | |
2557 | static void gen_unspecified_parameters_die PROTO((tree, dw_die_ref)); | |
2558 | static void gen_formal_types_die PROTO((tree, dw_die_ref)); | |
2559 | static void gen_subprogram_die PROTO((tree, dw_die_ref)); | |
2560 | static void gen_variable_die PROTO((tree, dw_die_ref)); | |
2561 | static void gen_label_die PROTO((tree, dw_die_ref)); | |
2562 | static void gen_lexical_block_die PROTO((tree, dw_die_ref, int)); | |
2d8b0f3a | 2563 | static void gen_inlined_subroutine_die PROTO((tree, dw_die_ref, int)); |
3f76745e JM |
2564 | static void gen_field_die PROTO((tree, dw_die_ref)); |
2565 | static void gen_ptr_to_mbr_type_die PROTO((tree, dw_die_ref)); | |
2566 | static void gen_compile_unit_die PROTO((char *)); | |
2567 | static void gen_string_type_die PROTO((tree, dw_die_ref)); | |
2568 | static void gen_inheritance_die PROTO((tree, dw_die_ref)); | |
2569 | static void gen_member_die PROTO((tree, dw_die_ref)); | |
2570 | static void gen_struct_or_union_type_die PROTO((tree, dw_die_ref)); | |
2571 | static void gen_subroutine_type_die PROTO((tree, dw_die_ref)); | |
2572 | static void gen_typedef_die PROTO((tree, dw_die_ref)); | |
2573 | static void gen_type_die PROTO((tree, dw_die_ref)); | |
2574 | static void gen_tagged_type_instantiation_die PROTO((tree, dw_die_ref)); | |
2575 | static void gen_block_die PROTO((tree, dw_die_ref, int)); | |
2576 | static void decls_for_scope PROTO((tree, dw_die_ref, int)); | |
2577 | static int is_redundant_typedef PROTO((tree)); | |
2578 | static void gen_decl_die PROTO((tree, dw_die_ref)); | |
2579 | static unsigned lookup_filename PROTO((char *)); | |
71dfc51f | 2580 | |
3f76745e | 2581 | /* Section names used to hold DWARF debugging information. */ |
c53aa195 JM |
2582 | #ifndef DEBUG_INFO_SECTION |
2583 | #define DEBUG_INFO_SECTION ".debug_info" | |
3f76745e JM |
2584 | #endif |
2585 | #ifndef ABBREV_SECTION | |
2586 | #define ABBREV_SECTION ".debug_abbrev" | |
2587 | #endif | |
2588 | #ifndef ARANGES_SECTION | |
2589 | #define ARANGES_SECTION ".debug_aranges" | |
2590 | #endif | |
2591 | #ifndef DW_MACINFO_SECTION | |
2592 | #define DW_MACINFO_SECTION ".debug_macinfo" | |
2593 | #endif | |
c53aa195 JM |
2594 | #ifndef DEBUG_LINE_SECTION |
2595 | #define DEBUG_LINE_SECTION ".debug_line" | |
3f76745e JM |
2596 | #endif |
2597 | #ifndef LOC_SECTION | |
2598 | #define LOC_SECTION ".debug_loc" | |
2599 | #endif | |
2600 | #ifndef PUBNAMES_SECTION | |
2601 | #define PUBNAMES_SECTION ".debug_pubnames" | |
2602 | #endif | |
2603 | #ifndef STR_SECTION | |
2604 | #define STR_SECTION ".debug_str" | |
2605 | #endif | |
a3f97cbb | 2606 | |
956d6950 | 2607 | /* Standard ELF section names for compiled code and data. */ |
3f76745e JM |
2608 | #ifndef TEXT_SECTION |
2609 | #define TEXT_SECTION ".text" | |
2610 | #endif | |
2611 | #ifndef DATA_SECTION | |
2612 | #define DATA_SECTION ".data" | |
2613 | #endif | |
2614 | #ifndef BSS_SECTION | |
2615 | #define BSS_SECTION ".bss" | |
2616 | #endif | |
71dfc51f | 2617 | |
a3f97cbb | 2618 | |
3f76745e JM |
2619 | /* Definitions of defaults for formats and names of various special |
2620 | (artificial) labels which may be generated within this file (when the -g | |
2621 | options is used and DWARF_DEBUGGING_INFO is in effect. | |
2622 | If necessary, these may be overridden from within the tm.h file, but | |
2623 | typically, overriding these defaults is unnecessary. */ | |
a3f97cbb | 2624 | |
257ebd1f | 2625 | static char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 2626 | |
3f76745e JM |
2627 | #ifndef TEXT_END_LABEL |
2628 | #define TEXT_END_LABEL "Letext" | |
2629 | #endif | |
2630 | #ifndef DATA_END_LABEL | |
2631 | #define DATA_END_LABEL "Ledata" | |
2632 | #endif | |
2633 | #ifndef BSS_END_LABEL | |
2634 | #define BSS_END_LABEL "Lebss" | |
2635 | #endif | |
2636 | #ifndef INSN_LABEL_FMT | |
2637 | #define INSN_LABEL_FMT "LI%u_" | |
2638 | #endif | |
2639 | #ifndef BLOCK_BEGIN_LABEL | |
2640 | #define BLOCK_BEGIN_LABEL "LBB" | |
2641 | #endif | |
2642 | #ifndef BLOCK_END_LABEL | |
2643 | #define BLOCK_END_LABEL "LBE" | |
2644 | #endif | |
2645 | #ifndef BODY_BEGIN_LABEL | |
2646 | #define BODY_BEGIN_LABEL "Lbb" | |
2647 | #endif | |
2648 | #ifndef BODY_END_LABEL | |
2649 | #define BODY_END_LABEL "Lbe" | |
2650 | #endif | |
2651 | #ifndef LINE_CODE_LABEL | |
2652 | #define LINE_CODE_LABEL "LM" | |
2653 | #endif | |
2654 | #ifndef SEPARATE_LINE_CODE_LABEL | |
2655 | #define SEPARATE_LINE_CODE_LABEL "LSM" | |
2656 | #endif | |
71dfc51f | 2657 | |
3f76745e JM |
2658 | /* Convert a reference to the assembler name of a C-level name. This |
2659 | macro has the same effect as ASM_OUTPUT_LABELREF, but copies to | |
2660 | a string rather than writing to a file. */ | |
2661 | #ifndef ASM_NAME_TO_STRING | |
2662 | #define ASM_NAME_TO_STRING(STR, NAME) \ | |
2663 | do { \ | |
2664 | if ((NAME)[0] == '*') \ | |
b170964a | 2665 | dyn_string_append (STR, NAME + 1); \ |
3f76745e | 2666 | else \ |
b170964a | 2667 | dyn_string_append (STR, NAME); \ |
3f76745e JM |
2668 | } \ |
2669 | while (0) | |
2670 | #endif | |
2671 | \f | |
2672 | /* Convert an integer constant expression into assembler syntax. Addition | |
2673 | and subtraction are the only arithmetic that may appear in these | |
2674 | expressions. This is an adaptation of output_addr_const in final.c. | |
2675 | Here, the target of the conversion is a string buffer. We can't use | |
2676 | output_addr_const directly, because it writes to a file. */ | |
71dfc51f | 2677 | |
3f76745e JM |
2678 | static void |
2679 | addr_const_to_string (str, x) | |
b170964a | 2680 | dyn_string_t str; |
3f76745e | 2681 | rtx x; |
a3f97cbb | 2682 | { |
3f76745e | 2683 | char buf1[256]; |
71dfc51f | 2684 | |
3f76745e | 2685 | restart: |
3f76745e JM |
2686 | switch (GET_CODE (x)) |
2687 | { | |
2688 | case PC: | |
2689 | if (flag_pic) | |
b170964a | 2690 | dyn_string_append (str, ","); |
3f76745e JM |
2691 | else |
2692 | abort (); | |
2693 | break; | |
71dfc51f | 2694 | |
3f76745e | 2695 | case SYMBOL_REF: |
b170964a | 2696 | ASM_NAME_TO_STRING (str, XSTR (x, 0)); |
3f76745e | 2697 | break; |
a3f97cbb | 2698 | |
3f76745e JM |
2699 | case LABEL_REF: |
2700 | ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (XEXP (x, 0))); | |
b170964a | 2701 | ASM_NAME_TO_STRING (str, buf1); |
3f76745e | 2702 | break; |
71dfc51f | 2703 | |
3f76745e JM |
2704 | case CODE_LABEL: |
2705 | ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (x)); | |
b170964a | 2706 | ASM_NAME_TO_STRING (str, buf1); |
3f76745e | 2707 | break; |
71dfc51f | 2708 | |
3f76745e JM |
2709 | case CONST_INT: |
2710 | sprintf (buf1, HOST_WIDE_INT_PRINT_DEC, INTVAL (x)); | |
b170964a | 2711 | dyn_string_append (str, buf1); |
3f76745e | 2712 | break; |
a3f97cbb | 2713 | |
3f76745e JM |
2714 | case CONST: |
2715 | /* This used to output parentheses around the expression, but that does | |
2716 | not work on the 386 (either ATT or BSD assembler). */ | |
b170964a | 2717 | addr_const_to_string (str, XEXP (x, 0)); |
3f76745e | 2718 | break; |
71dfc51f | 2719 | |
3f76745e JM |
2720 | case CONST_DOUBLE: |
2721 | if (GET_MODE (x) == VOIDmode) | |
2722 | { | |
2723 | /* We can use %d if the number is one word and positive. */ | |
2724 | if (CONST_DOUBLE_HIGH (x)) | |
2725 | sprintf (buf1, HOST_WIDE_INT_PRINT_DOUBLE_HEX, | |
2726 | CONST_DOUBLE_HIGH (x), CONST_DOUBLE_LOW (x)); | |
2727 | else if (CONST_DOUBLE_LOW (x) < 0) | |
2728 | sprintf (buf1, HOST_WIDE_INT_PRINT_HEX, CONST_DOUBLE_LOW (x)); | |
2729 | else | |
2730 | sprintf (buf1, HOST_WIDE_INT_PRINT_DEC, | |
2731 | CONST_DOUBLE_LOW (x)); | |
b170964a | 2732 | dyn_string_append (str, buf1); |
3f76745e JM |
2733 | } |
2734 | else | |
2735 | /* We can't handle floating point constants; PRINT_OPERAND must | |
2736 | handle them. */ | |
2737 | output_operand_lossage ("floating constant misused"); | |
2738 | break; | |
71dfc51f | 2739 | |
3f76745e JM |
2740 | case PLUS: |
2741 | /* Some assemblers need integer constants to appear last (eg masm). */ | |
2742 | if (GET_CODE (XEXP (x, 0)) == CONST_INT) | |
a3f97cbb | 2743 | { |
b170964a | 2744 | addr_const_to_string (str, XEXP (x, 1)); |
3f76745e | 2745 | if (INTVAL (XEXP (x, 0)) >= 0) |
b170964a | 2746 | dyn_string_append (str, "+"); |
3f76745e | 2747 | |
b170964a | 2748 | addr_const_to_string (str, XEXP (x, 0)); |
a3f97cbb | 2749 | } |
3f76745e JM |
2750 | else |
2751 | { | |
b170964a | 2752 | addr_const_to_string (str, XEXP (x, 0)); |
3f76745e | 2753 | if (INTVAL (XEXP (x, 1)) >= 0) |
b170964a | 2754 | dyn_string_append (str, "+"); |
71dfc51f | 2755 | |
b170964a | 2756 | addr_const_to_string (str, XEXP (x, 1)); |
3f76745e JM |
2757 | } |
2758 | break; | |
a3f97cbb | 2759 | |
3f76745e JM |
2760 | case MINUS: |
2761 | /* Avoid outputting things like x-x or x+5-x, since some assemblers | |
2762 | can't handle that. */ | |
2763 | x = simplify_subtraction (x); | |
2764 | if (GET_CODE (x) != MINUS) | |
2765 | goto restart; | |
71dfc51f | 2766 | |
b170964a MM |
2767 | addr_const_to_string (str, XEXP (x, 0)); |
2768 | dyn_string_append (str, "-"); | |
3f76745e JM |
2769 | if (GET_CODE (XEXP (x, 1)) == CONST_INT |
2770 | && INTVAL (XEXP (x, 1)) < 0) | |
a3f97cbb | 2771 | { |
b170964a MM |
2772 | dyn_string_append (str, ASM_OPEN_PAREN); |
2773 | addr_const_to_string (str, XEXP (x, 1)); | |
2774 | dyn_string_append (str, ASM_CLOSE_PAREN); | |
3f76745e JM |
2775 | } |
2776 | else | |
b170964a | 2777 | addr_const_to_string (str, XEXP (x, 1)); |
3f76745e | 2778 | break; |
71dfc51f | 2779 | |
3f76745e JM |
2780 | case ZERO_EXTEND: |
2781 | case SIGN_EXTEND: | |
b170964a | 2782 | addr_const_to_string (str, XEXP (x, 0)); |
3f76745e | 2783 | break; |
71dfc51f | 2784 | |
3f76745e JM |
2785 | default: |
2786 | output_operand_lossage ("invalid expression as operand"); | |
2787 | } | |
d291dd49 JM |
2788 | } |
2789 | ||
3f76745e JM |
2790 | /* Convert an address constant to a string, and return a pointer to |
2791 | a copy of the result, located on the heap. */ | |
71dfc51f | 2792 | |
3f76745e JM |
2793 | static char * |
2794 | addr_to_string (x) | |
2795 | rtx x; | |
d291dd49 | 2796 | { |
b170964a MM |
2797 | dyn_string_t ds = dyn_string_new (256); |
2798 | char *s; | |
2799 | ||
2800 | addr_const_to_string (ds, x); | |
2801 | ||
2802 | /* Return the dynamically allocated string, but free the | |
2803 | dyn_string_t itself. */ | |
2804 | s = ds->s; | |
2805 | free (ds); | |
2806 | return s; | |
d291dd49 JM |
2807 | } |
2808 | ||
956d6950 | 2809 | /* Test if rtl node points to a pseudo register. */ |
71dfc51f | 2810 | |
3f76745e JM |
2811 | static inline int |
2812 | is_pseudo_reg (rtl) | |
2813 | register rtx rtl; | |
d291dd49 | 2814 | { |
3f76745e JM |
2815 | return (((GET_CODE (rtl) == REG) && (REGNO (rtl) >= FIRST_PSEUDO_REGISTER)) |
2816 | || ((GET_CODE (rtl) == SUBREG) | |
2817 | && (REGNO (XEXP (rtl, 0)) >= FIRST_PSEUDO_REGISTER))); | |
d291dd49 JM |
2818 | } |
2819 | ||
3f76745e JM |
2820 | /* Return a reference to a type, with its const and volatile qualifiers |
2821 | removed. */ | |
71dfc51f | 2822 | |
3f76745e JM |
2823 | static inline tree |
2824 | type_main_variant (type) | |
2825 | register tree type; | |
d291dd49 | 2826 | { |
3f76745e | 2827 | type = TYPE_MAIN_VARIANT (type); |
71dfc51f | 2828 | |
3f76745e JM |
2829 | /* There really should be only one main variant among any group of variants |
2830 | of a given type (and all of the MAIN_VARIANT values for all members of | |
2831 | the group should point to that one type) but sometimes the C front-end | |
2832 | messes this up for array types, so we work around that bug here. */ | |
71dfc51f | 2833 | |
3f76745e JM |
2834 | if (TREE_CODE (type) == ARRAY_TYPE) |
2835 | while (type != TYPE_MAIN_VARIANT (type)) | |
2836 | type = TYPE_MAIN_VARIANT (type); | |
2837 | ||
2838 | return type; | |
a3f97cbb JW |
2839 | } |
2840 | ||
3f76745e | 2841 | /* Return non-zero if the given type node represents a tagged type. */ |
71dfc51f RK |
2842 | |
2843 | static inline int | |
3f76745e JM |
2844 | is_tagged_type (type) |
2845 | register tree type; | |
bdb669cb | 2846 | { |
3f76745e | 2847 | register enum tree_code code = TREE_CODE (type); |
71dfc51f | 2848 | |
3f76745e JM |
2849 | return (code == RECORD_TYPE || code == UNION_TYPE |
2850 | || code == QUAL_UNION_TYPE || code == ENUMERAL_TYPE); | |
bdb669cb JM |
2851 | } |
2852 | ||
3f76745e | 2853 | /* Convert a DIE tag into its string name. */ |
71dfc51f | 2854 | |
3f76745e JM |
2855 | static char * |
2856 | dwarf_tag_name (tag) | |
2857 | register unsigned tag; | |
bdb669cb | 2858 | { |
3f76745e JM |
2859 | switch (tag) |
2860 | { | |
2861 | case DW_TAG_padding: | |
2862 | return "DW_TAG_padding"; | |
2863 | case DW_TAG_array_type: | |
2864 | return "DW_TAG_array_type"; | |
2865 | case DW_TAG_class_type: | |
2866 | return "DW_TAG_class_type"; | |
2867 | case DW_TAG_entry_point: | |
2868 | return "DW_TAG_entry_point"; | |
2869 | case DW_TAG_enumeration_type: | |
2870 | return "DW_TAG_enumeration_type"; | |
2871 | case DW_TAG_formal_parameter: | |
2872 | return "DW_TAG_formal_parameter"; | |
2873 | case DW_TAG_imported_declaration: | |
2874 | return "DW_TAG_imported_declaration"; | |
2875 | case DW_TAG_label: | |
2876 | return "DW_TAG_label"; | |
2877 | case DW_TAG_lexical_block: | |
2878 | return "DW_TAG_lexical_block"; | |
2879 | case DW_TAG_member: | |
2880 | return "DW_TAG_member"; | |
2881 | case DW_TAG_pointer_type: | |
2882 | return "DW_TAG_pointer_type"; | |
2883 | case DW_TAG_reference_type: | |
2884 | return "DW_TAG_reference_type"; | |
2885 | case DW_TAG_compile_unit: | |
2886 | return "DW_TAG_compile_unit"; | |
2887 | case DW_TAG_string_type: | |
2888 | return "DW_TAG_string_type"; | |
2889 | case DW_TAG_structure_type: | |
2890 | return "DW_TAG_structure_type"; | |
2891 | case DW_TAG_subroutine_type: | |
2892 | return "DW_TAG_subroutine_type"; | |
2893 | case DW_TAG_typedef: | |
2894 | return "DW_TAG_typedef"; | |
2895 | case DW_TAG_union_type: | |
2896 | return "DW_TAG_union_type"; | |
2897 | case DW_TAG_unspecified_parameters: | |
2898 | return "DW_TAG_unspecified_parameters"; | |
2899 | case DW_TAG_variant: | |
2900 | return "DW_TAG_variant"; | |
2901 | case DW_TAG_common_block: | |
2902 | return "DW_TAG_common_block"; | |
2903 | case DW_TAG_common_inclusion: | |
2904 | return "DW_TAG_common_inclusion"; | |
2905 | case DW_TAG_inheritance: | |
2906 | return "DW_TAG_inheritance"; | |
2907 | case DW_TAG_inlined_subroutine: | |
2908 | return "DW_TAG_inlined_subroutine"; | |
2909 | case DW_TAG_module: | |
2910 | return "DW_TAG_module"; | |
2911 | case DW_TAG_ptr_to_member_type: | |
2912 | return "DW_TAG_ptr_to_member_type"; | |
2913 | case DW_TAG_set_type: | |
2914 | return "DW_TAG_set_type"; | |
2915 | case DW_TAG_subrange_type: | |
2916 | return "DW_TAG_subrange_type"; | |
2917 | case DW_TAG_with_stmt: | |
2918 | return "DW_TAG_with_stmt"; | |
2919 | case DW_TAG_access_declaration: | |
2920 | return "DW_TAG_access_declaration"; | |
2921 | case DW_TAG_base_type: | |
2922 | return "DW_TAG_base_type"; | |
2923 | case DW_TAG_catch_block: | |
2924 | return "DW_TAG_catch_block"; | |
2925 | case DW_TAG_const_type: | |
2926 | return "DW_TAG_const_type"; | |
2927 | case DW_TAG_constant: | |
2928 | return "DW_TAG_constant"; | |
2929 | case DW_TAG_enumerator: | |
2930 | return "DW_TAG_enumerator"; | |
2931 | case DW_TAG_file_type: | |
2932 | return "DW_TAG_file_type"; | |
2933 | case DW_TAG_friend: | |
2934 | return "DW_TAG_friend"; | |
2935 | case DW_TAG_namelist: | |
2936 | return "DW_TAG_namelist"; | |
2937 | case DW_TAG_namelist_item: | |
2938 | return "DW_TAG_namelist_item"; | |
2939 | case DW_TAG_packed_type: | |
2940 | return "DW_TAG_packed_type"; | |
2941 | case DW_TAG_subprogram: | |
2942 | return "DW_TAG_subprogram"; | |
2943 | case DW_TAG_template_type_param: | |
2944 | return "DW_TAG_template_type_param"; | |
2945 | case DW_TAG_template_value_param: | |
2946 | return "DW_TAG_template_value_param"; | |
2947 | case DW_TAG_thrown_type: | |
2948 | return "DW_TAG_thrown_type"; | |
2949 | case DW_TAG_try_block: | |
2950 | return "DW_TAG_try_block"; | |
2951 | case DW_TAG_variant_part: | |
2952 | return "DW_TAG_variant_part"; | |
2953 | case DW_TAG_variable: | |
2954 | return "DW_TAG_variable"; | |
2955 | case DW_TAG_volatile_type: | |
2956 | return "DW_TAG_volatile_type"; | |
2957 | case DW_TAG_MIPS_loop: | |
2958 | return "DW_TAG_MIPS_loop"; | |
2959 | case DW_TAG_format_label: | |
2960 | return "DW_TAG_format_label"; | |
2961 | case DW_TAG_function_template: | |
2962 | return "DW_TAG_function_template"; | |
2963 | case DW_TAG_class_template: | |
2964 | return "DW_TAG_class_template"; | |
2965 | default: | |
2966 | return "DW_TAG_<unknown>"; | |
2967 | } | |
bdb669cb | 2968 | } |
a3f97cbb | 2969 | |
3f76745e | 2970 | /* Convert a DWARF attribute code into its string name. */ |
71dfc51f | 2971 | |
3f76745e JM |
2972 | static char * |
2973 | dwarf_attr_name (attr) | |
2974 | register unsigned attr; | |
4b674448 | 2975 | { |
3f76745e | 2976 | switch (attr) |
4b674448 | 2977 | { |
3f76745e JM |
2978 | case DW_AT_sibling: |
2979 | return "DW_AT_sibling"; | |
2980 | case DW_AT_location: | |
2981 | return "DW_AT_location"; | |
2982 | case DW_AT_name: | |
2983 | return "DW_AT_name"; | |
2984 | case DW_AT_ordering: | |
2985 | return "DW_AT_ordering"; | |
2986 | case DW_AT_subscr_data: | |
2987 | return "DW_AT_subscr_data"; | |
2988 | case DW_AT_byte_size: | |
2989 | return "DW_AT_byte_size"; | |
2990 | case DW_AT_bit_offset: | |
2991 | return "DW_AT_bit_offset"; | |
2992 | case DW_AT_bit_size: | |
2993 | return "DW_AT_bit_size"; | |
2994 | case DW_AT_element_list: | |
2995 | return "DW_AT_element_list"; | |
2996 | case DW_AT_stmt_list: | |
2997 | return "DW_AT_stmt_list"; | |
2998 | case DW_AT_low_pc: | |
2999 | return "DW_AT_low_pc"; | |
3000 | case DW_AT_high_pc: | |
3001 | return "DW_AT_high_pc"; | |
3002 | case DW_AT_language: | |
3003 | return "DW_AT_language"; | |
3004 | case DW_AT_member: | |
3005 | return "DW_AT_member"; | |
3006 | case DW_AT_discr: | |
3007 | return "DW_AT_discr"; | |
3008 | case DW_AT_discr_value: | |
3009 | return "DW_AT_discr_value"; | |
3010 | case DW_AT_visibility: | |
3011 | return "DW_AT_visibility"; | |
3012 | case DW_AT_import: | |
3013 | return "DW_AT_import"; | |
3014 | case DW_AT_string_length: | |
3015 | return "DW_AT_string_length"; | |
3016 | case DW_AT_common_reference: | |
3017 | return "DW_AT_common_reference"; | |
3018 | case DW_AT_comp_dir: | |
3019 | return "DW_AT_comp_dir"; | |
3020 | case DW_AT_const_value: | |
3021 | return "DW_AT_const_value"; | |
3022 | case DW_AT_containing_type: | |
3023 | return "DW_AT_containing_type"; | |
3024 | case DW_AT_default_value: | |
3025 | return "DW_AT_default_value"; | |
3026 | case DW_AT_inline: | |
3027 | return "DW_AT_inline"; | |
3028 | case DW_AT_is_optional: | |
3029 | return "DW_AT_is_optional"; | |
3030 | case DW_AT_lower_bound: | |
3031 | return "DW_AT_lower_bound"; | |
3032 | case DW_AT_producer: | |
3033 | return "DW_AT_producer"; | |
3034 | case DW_AT_prototyped: | |
3035 | return "DW_AT_prototyped"; | |
3036 | case DW_AT_return_addr: | |
3037 | return "DW_AT_return_addr"; | |
3038 | case DW_AT_start_scope: | |
3039 | return "DW_AT_start_scope"; | |
3040 | case DW_AT_stride_size: | |
3041 | return "DW_AT_stride_size"; | |
3042 | case DW_AT_upper_bound: | |
3043 | return "DW_AT_upper_bound"; | |
3044 | case DW_AT_abstract_origin: | |
3045 | return "DW_AT_abstract_origin"; | |
3046 | case DW_AT_accessibility: | |
3047 | return "DW_AT_accessibility"; | |
3048 | case DW_AT_address_class: | |
3049 | return "DW_AT_address_class"; | |
3050 | case DW_AT_artificial: | |
3051 | return "DW_AT_artificial"; | |
3052 | case DW_AT_base_types: | |
3053 | return "DW_AT_base_types"; | |
3054 | case DW_AT_calling_convention: | |
3055 | return "DW_AT_calling_convention"; | |
3056 | case DW_AT_count: | |
3057 | return "DW_AT_count"; | |
3058 | case DW_AT_data_member_location: | |
3059 | return "DW_AT_data_member_location"; | |
3060 | case DW_AT_decl_column: | |
3061 | return "DW_AT_decl_column"; | |
3062 | case DW_AT_decl_file: | |
3063 | return "DW_AT_decl_file"; | |
3064 | case DW_AT_decl_line: | |
3065 | return "DW_AT_decl_line"; | |
3066 | case DW_AT_declaration: | |
3067 | return "DW_AT_declaration"; | |
3068 | case DW_AT_discr_list: | |
3069 | return "DW_AT_discr_list"; | |
3070 | case DW_AT_encoding: | |
3071 | return "DW_AT_encoding"; | |
3072 | case DW_AT_external: | |
3073 | return "DW_AT_external"; | |
3074 | case DW_AT_frame_base: | |
3075 | return "DW_AT_frame_base"; | |
3076 | case DW_AT_friend: | |
3077 | return "DW_AT_friend"; | |
3078 | case DW_AT_identifier_case: | |
3079 | return "DW_AT_identifier_case"; | |
3080 | case DW_AT_macro_info: | |
3081 | return "DW_AT_macro_info"; | |
3082 | case DW_AT_namelist_items: | |
3083 | return "DW_AT_namelist_items"; | |
3084 | case DW_AT_priority: | |
3085 | return "DW_AT_priority"; | |
3086 | case DW_AT_segment: | |
3087 | return "DW_AT_segment"; | |
3088 | case DW_AT_specification: | |
3089 | return "DW_AT_specification"; | |
3090 | case DW_AT_static_link: | |
3091 | return "DW_AT_static_link"; | |
3092 | case DW_AT_type: | |
3093 | return "DW_AT_type"; | |
3094 | case DW_AT_use_location: | |
3095 | return "DW_AT_use_location"; | |
3096 | case DW_AT_variable_parameter: | |
3097 | return "DW_AT_variable_parameter"; | |
3098 | case DW_AT_virtuality: | |
3099 | return "DW_AT_virtuality"; | |
3100 | case DW_AT_vtable_elem_location: | |
3101 | return "DW_AT_vtable_elem_location"; | |
71dfc51f | 3102 | |
3f76745e JM |
3103 | case DW_AT_MIPS_fde: |
3104 | return "DW_AT_MIPS_fde"; | |
3105 | case DW_AT_MIPS_loop_begin: | |
3106 | return "DW_AT_MIPS_loop_begin"; | |
3107 | case DW_AT_MIPS_tail_loop_begin: | |
3108 | return "DW_AT_MIPS_tail_loop_begin"; | |
3109 | case DW_AT_MIPS_epilog_begin: | |
3110 | return "DW_AT_MIPS_epilog_begin"; | |
3111 | case DW_AT_MIPS_loop_unroll_factor: | |
3112 | return "DW_AT_MIPS_loop_unroll_factor"; | |
3113 | case DW_AT_MIPS_software_pipeline_depth: | |
3114 | return "DW_AT_MIPS_software_pipeline_depth"; | |
3115 | case DW_AT_MIPS_linkage_name: | |
3116 | return "DW_AT_MIPS_linkage_name"; | |
3117 | case DW_AT_MIPS_stride: | |
3118 | return "DW_AT_MIPS_stride"; | |
3119 | case DW_AT_MIPS_abstract_name: | |
3120 | return "DW_AT_MIPS_abstract_name"; | |
3121 | case DW_AT_MIPS_clone_origin: | |
3122 | return "DW_AT_MIPS_clone_origin"; | |
3123 | case DW_AT_MIPS_has_inlines: | |
3124 | return "DW_AT_MIPS_has_inlines"; | |
71dfc51f | 3125 | |
3f76745e JM |
3126 | case DW_AT_sf_names: |
3127 | return "DW_AT_sf_names"; | |
3128 | case DW_AT_src_info: | |
3129 | return "DW_AT_src_info"; | |
3130 | case DW_AT_mac_info: | |
3131 | return "DW_AT_mac_info"; | |
3132 | case DW_AT_src_coords: | |
3133 | return "DW_AT_src_coords"; | |
3134 | case DW_AT_body_begin: | |
3135 | return "DW_AT_body_begin"; | |
3136 | case DW_AT_body_end: | |
3137 | return "DW_AT_body_end"; | |
3138 | default: | |
3139 | return "DW_AT_<unknown>"; | |
4b674448 JM |
3140 | } |
3141 | } | |
3142 | ||
3f76745e | 3143 | /* Convert a DWARF value form code into its string name. */ |
71dfc51f | 3144 | |
3f76745e JM |
3145 | static char * |
3146 | dwarf_form_name (form) | |
3147 | register unsigned form; | |
4b674448 | 3148 | { |
3f76745e | 3149 | switch (form) |
4b674448 | 3150 | { |
3f76745e JM |
3151 | case DW_FORM_addr: |
3152 | return "DW_FORM_addr"; | |
3153 | case DW_FORM_block2: | |
3154 | return "DW_FORM_block2"; | |
3155 | case DW_FORM_block4: | |
3156 | return "DW_FORM_block4"; | |
3157 | case DW_FORM_data2: | |
3158 | return "DW_FORM_data2"; | |
3159 | case DW_FORM_data4: | |
3160 | return "DW_FORM_data4"; | |
3161 | case DW_FORM_data8: | |
3162 | return "DW_FORM_data8"; | |
3163 | case DW_FORM_string: | |
3164 | return "DW_FORM_string"; | |
3165 | case DW_FORM_block: | |
3166 | return "DW_FORM_block"; | |
3167 | case DW_FORM_block1: | |
3168 | return "DW_FORM_block1"; | |
3169 | case DW_FORM_data1: | |
3170 | return "DW_FORM_data1"; | |
3171 | case DW_FORM_flag: | |
3172 | return "DW_FORM_flag"; | |
3173 | case DW_FORM_sdata: | |
3174 | return "DW_FORM_sdata"; | |
3175 | case DW_FORM_strp: | |
3176 | return "DW_FORM_strp"; | |
3177 | case DW_FORM_udata: | |
3178 | return "DW_FORM_udata"; | |
3179 | case DW_FORM_ref_addr: | |
3180 | return "DW_FORM_ref_addr"; | |
3181 | case DW_FORM_ref1: | |
3182 | return "DW_FORM_ref1"; | |
3183 | case DW_FORM_ref2: | |
3184 | return "DW_FORM_ref2"; | |
3185 | case DW_FORM_ref4: | |
3186 | return "DW_FORM_ref4"; | |
3187 | case DW_FORM_ref8: | |
3188 | return "DW_FORM_ref8"; | |
3189 | case DW_FORM_ref_udata: | |
3190 | return "DW_FORM_ref_udata"; | |
3191 | case DW_FORM_indirect: | |
3192 | return "DW_FORM_indirect"; | |
3193 | default: | |
3194 | return "DW_FORM_<unknown>"; | |
4b674448 JM |
3195 | } |
3196 | } | |
3197 | ||
3f76745e | 3198 | /* Convert a DWARF stack opcode into its string name. */ |
71dfc51f | 3199 | |
3f76745e JM |
3200 | static char * |
3201 | dwarf_stack_op_name (op) | |
3202 | register unsigned op; | |
a3f97cbb | 3203 | { |
3f76745e | 3204 | switch (op) |
a3f97cbb | 3205 | { |
3f76745e JM |
3206 | case DW_OP_addr: |
3207 | return "DW_OP_addr"; | |
3208 | case DW_OP_deref: | |
3209 | return "DW_OP_deref"; | |
3210 | case DW_OP_const1u: | |
3211 | return "DW_OP_const1u"; | |
3212 | case DW_OP_const1s: | |
3213 | return "DW_OP_const1s"; | |
3214 | case DW_OP_const2u: | |
3215 | return "DW_OP_const2u"; | |
3216 | case DW_OP_const2s: | |
3217 | return "DW_OP_const2s"; | |
3218 | case DW_OP_const4u: | |
3219 | return "DW_OP_const4u"; | |
3220 | case DW_OP_const4s: | |
3221 | return "DW_OP_const4s"; | |
3222 | case DW_OP_const8u: | |
3223 | return "DW_OP_const8u"; | |
3224 | case DW_OP_const8s: | |
3225 | return "DW_OP_const8s"; | |
3226 | case DW_OP_constu: | |
3227 | return "DW_OP_constu"; | |
3228 | case DW_OP_consts: | |
3229 | return "DW_OP_consts"; | |
3230 | case DW_OP_dup: | |
3231 | return "DW_OP_dup"; | |
3232 | case DW_OP_drop: | |
3233 | return "DW_OP_drop"; | |
3234 | case DW_OP_over: | |
3235 | return "DW_OP_over"; | |
3236 | case DW_OP_pick: | |
3237 | return "DW_OP_pick"; | |
3238 | case DW_OP_swap: | |
3239 | return "DW_OP_swap"; | |
3240 | case DW_OP_rot: | |
3241 | return "DW_OP_rot"; | |
3242 | case DW_OP_xderef: | |
3243 | return "DW_OP_xderef"; | |
3244 | case DW_OP_abs: | |
3245 | return "DW_OP_abs"; | |
3246 | case DW_OP_and: | |
3247 | return "DW_OP_and"; | |
3248 | case DW_OP_div: | |
3249 | return "DW_OP_div"; | |
3250 | case DW_OP_minus: | |
3251 | return "DW_OP_minus"; | |
3252 | case DW_OP_mod: | |
3253 | return "DW_OP_mod"; | |
3254 | case DW_OP_mul: | |
3255 | return "DW_OP_mul"; | |
3256 | case DW_OP_neg: | |
3257 | return "DW_OP_neg"; | |
3258 | case DW_OP_not: | |
3259 | return "DW_OP_not"; | |
3260 | case DW_OP_or: | |
3261 | return "DW_OP_or"; | |
3262 | case DW_OP_plus: | |
3263 | return "DW_OP_plus"; | |
3264 | case DW_OP_plus_uconst: | |
3265 | return "DW_OP_plus_uconst"; | |
3266 | case DW_OP_shl: | |
3267 | return "DW_OP_shl"; | |
3268 | case DW_OP_shr: | |
3269 | return "DW_OP_shr"; | |
3270 | case DW_OP_shra: | |
3271 | return "DW_OP_shra"; | |
3272 | case DW_OP_xor: | |
3273 | return "DW_OP_xor"; | |
3274 | case DW_OP_bra: | |
3275 | return "DW_OP_bra"; | |
3276 | case DW_OP_eq: | |
3277 | return "DW_OP_eq"; | |
3278 | case DW_OP_ge: | |
3279 | return "DW_OP_ge"; | |
3280 | case DW_OP_gt: | |
3281 | return "DW_OP_gt"; | |
3282 | case DW_OP_le: | |
3283 | return "DW_OP_le"; | |
3284 | case DW_OP_lt: | |
3285 | return "DW_OP_lt"; | |
3286 | case DW_OP_ne: | |
3287 | return "DW_OP_ne"; | |
3288 | case DW_OP_skip: | |
3289 | return "DW_OP_skip"; | |
3290 | case DW_OP_lit0: | |
3291 | return "DW_OP_lit0"; | |
3292 | case DW_OP_lit1: | |
3293 | return "DW_OP_lit1"; | |
3294 | case DW_OP_lit2: | |
3295 | return "DW_OP_lit2"; | |
3296 | case DW_OP_lit3: | |
3297 | return "DW_OP_lit3"; | |
3298 | case DW_OP_lit4: | |
3299 | return "DW_OP_lit4"; | |
3300 | case DW_OP_lit5: | |
3301 | return "DW_OP_lit5"; | |
3302 | case DW_OP_lit6: | |
3303 | return "DW_OP_lit6"; | |
3304 | case DW_OP_lit7: | |
3305 | return "DW_OP_lit7"; | |
3306 | case DW_OP_lit8: | |
3307 | return "DW_OP_lit8"; | |
3308 | case DW_OP_lit9: | |
3309 | return "DW_OP_lit9"; | |
3310 | case DW_OP_lit10: | |
3311 | return "DW_OP_lit10"; | |
3312 | case DW_OP_lit11: | |
3313 | return "DW_OP_lit11"; | |
3314 | case DW_OP_lit12: | |
3315 | return "DW_OP_lit12"; | |
3316 | case DW_OP_lit13: | |
3317 | return "DW_OP_lit13"; | |
3318 | case DW_OP_lit14: | |
3319 | return "DW_OP_lit14"; | |
3320 | case DW_OP_lit15: | |
3321 | return "DW_OP_lit15"; | |
3322 | case DW_OP_lit16: | |
3323 | return "DW_OP_lit16"; | |
3324 | case DW_OP_lit17: | |
3325 | return "DW_OP_lit17"; | |
3326 | case DW_OP_lit18: | |
3327 | return "DW_OP_lit18"; | |
3328 | case DW_OP_lit19: | |
3329 | return "DW_OP_lit19"; | |
3330 | case DW_OP_lit20: | |
3331 | return "DW_OP_lit20"; | |
3332 | case DW_OP_lit21: | |
3333 | return "DW_OP_lit21"; | |
3334 | case DW_OP_lit22: | |
3335 | return "DW_OP_lit22"; | |
3336 | case DW_OP_lit23: | |
3337 | return "DW_OP_lit23"; | |
3338 | case DW_OP_lit24: | |
3339 | return "DW_OP_lit24"; | |
3340 | case DW_OP_lit25: | |
3341 | return "DW_OP_lit25"; | |
3342 | case DW_OP_lit26: | |
3343 | return "DW_OP_lit26"; | |
3344 | case DW_OP_lit27: | |
3345 | return "DW_OP_lit27"; | |
3346 | case DW_OP_lit28: | |
3347 | return "DW_OP_lit28"; | |
3348 | case DW_OP_lit29: | |
3349 | return "DW_OP_lit29"; | |
3350 | case DW_OP_lit30: | |
3351 | return "DW_OP_lit30"; | |
3352 | case DW_OP_lit31: | |
3353 | return "DW_OP_lit31"; | |
3354 | case DW_OP_reg0: | |
3355 | return "DW_OP_reg0"; | |
3356 | case DW_OP_reg1: | |
3357 | return "DW_OP_reg1"; | |
3358 | case DW_OP_reg2: | |
3359 | return "DW_OP_reg2"; | |
3360 | case DW_OP_reg3: | |
3361 | return "DW_OP_reg3"; | |
3362 | case DW_OP_reg4: | |
3363 | return "DW_OP_reg4"; | |
3364 | case DW_OP_reg5: | |
3365 | return "DW_OP_reg5"; | |
3366 | case DW_OP_reg6: | |
3367 | return "DW_OP_reg6"; | |
3368 | case DW_OP_reg7: | |
3369 | return "DW_OP_reg7"; | |
3370 | case DW_OP_reg8: | |
3371 | return "DW_OP_reg8"; | |
3372 | case DW_OP_reg9: | |
3373 | return "DW_OP_reg9"; | |
3374 | case DW_OP_reg10: | |
3375 | return "DW_OP_reg10"; | |
3376 | case DW_OP_reg11: | |
3377 | return "DW_OP_reg11"; | |
3378 | case DW_OP_reg12: | |
3379 | return "DW_OP_reg12"; | |
3380 | case DW_OP_reg13: | |
3381 | return "DW_OP_reg13"; | |
3382 | case DW_OP_reg14: | |
3383 | return "DW_OP_reg14"; | |
3384 | case DW_OP_reg15: | |
3385 | return "DW_OP_reg15"; | |
3386 | case DW_OP_reg16: | |
3387 | return "DW_OP_reg16"; | |
3388 | case DW_OP_reg17: | |
3389 | return "DW_OP_reg17"; | |
3390 | case DW_OP_reg18: | |
3391 | return "DW_OP_reg18"; | |
3392 | case DW_OP_reg19: | |
3393 | return "DW_OP_reg19"; | |
3394 | case DW_OP_reg20: | |
3395 | return "DW_OP_reg20"; | |
3396 | case DW_OP_reg21: | |
3397 | return "DW_OP_reg21"; | |
3398 | case DW_OP_reg22: | |
3399 | return "DW_OP_reg22"; | |
3400 | case DW_OP_reg23: | |
3401 | return "DW_OP_reg23"; | |
3402 | case DW_OP_reg24: | |
3403 | return "DW_OP_reg24"; | |
3404 | case DW_OP_reg25: | |
3405 | return "DW_OP_reg25"; | |
3406 | case DW_OP_reg26: | |
3407 | return "DW_OP_reg26"; | |
3408 | case DW_OP_reg27: | |
3409 | return "DW_OP_reg27"; | |
3410 | case DW_OP_reg28: | |
3411 | return "DW_OP_reg28"; | |
3412 | case DW_OP_reg29: | |
3413 | return "DW_OP_reg29"; | |
3414 | case DW_OP_reg30: | |
3415 | return "DW_OP_reg30"; | |
3416 | case DW_OP_reg31: | |
3417 | return "DW_OP_reg31"; | |
3418 | case DW_OP_breg0: | |
3419 | return "DW_OP_breg0"; | |
3420 | case DW_OP_breg1: | |
3421 | return "DW_OP_breg1"; | |
3422 | case DW_OP_breg2: | |
3423 | return "DW_OP_breg2"; | |
3424 | case DW_OP_breg3: | |
3425 | return "DW_OP_breg3"; | |
3426 | case DW_OP_breg4: | |
3427 | return "DW_OP_breg4"; | |
3428 | case DW_OP_breg5: | |
3429 | return "DW_OP_breg5"; | |
3430 | case DW_OP_breg6: | |
3431 | return "DW_OP_breg6"; | |
3432 | case DW_OP_breg7: | |
3433 | return "DW_OP_breg7"; | |
3434 | case DW_OP_breg8: | |
3435 | return "DW_OP_breg8"; | |
3436 | case DW_OP_breg9: | |
3437 | return "DW_OP_breg9"; | |
3438 | case DW_OP_breg10: | |
3439 | return "DW_OP_breg10"; | |
3440 | case DW_OP_breg11: | |
3441 | return "DW_OP_breg11"; | |
3442 | case DW_OP_breg12: | |
3443 | return "DW_OP_breg12"; | |
3444 | case DW_OP_breg13: | |
3445 | return "DW_OP_breg13"; | |
3446 | case DW_OP_breg14: | |
3447 | return "DW_OP_breg14"; | |
3448 | case DW_OP_breg15: | |
3449 | return "DW_OP_breg15"; | |
3450 | case DW_OP_breg16: | |
3451 | return "DW_OP_breg16"; | |
3452 | case DW_OP_breg17: | |
3453 | return "DW_OP_breg17"; | |
3454 | case DW_OP_breg18: | |
3455 | return "DW_OP_breg18"; | |
3456 | case DW_OP_breg19: | |
3457 | return "DW_OP_breg19"; | |
3458 | case DW_OP_breg20: | |
3459 | return "DW_OP_breg20"; | |
3460 | case DW_OP_breg21: | |
3461 | return "DW_OP_breg21"; | |
3462 | case DW_OP_breg22: | |
3463 | return "DW_OP_breg22"; | |
3464 | case DW_OP_breg23: | |
3465 | return "DW_OP_breg23"; | |
3466 | case DW_OP_breg24: | |
3467 | return "DW_OP_breg24"; | |
3468 | case DW_OP_breg25: | |
3469 | return "DW_OP_breg25"; | |
3470 | case DW_OP_breg26: | |
3471 | return "DW_OP_breg26"; | |
3472 | case DW_OP_breg27: | |
3473 | return "DW_OP_breg27"; | |
3474 | case DW_OP_breg28: | |
3475 | return "DW_OP_breg28"; | |
3476 | case DW_OP_breg29: | |
3477 | return "DW_OP_breg29"; | |
3478 | case DW_OP_breg30: | |
3479 | return "DW_OP_breg30"; | |
3480 | case DW_OP_breg31: | |
3481 | return "DW_OP_breg31"; | |
3482 | case DW_OP_regx: | |
3483 | return "DW_OP_regx"; | |
3484 | case DW_OP_fbreg: | |
3485 | return "DW_OP_fbreg"; | |
3486 | case DW_OP_bregx: | |
3487 | return "DW_OP_bregx"; | |
3488 | case DW_OP_piece: | |
3489 | return "DW_OP_piece"; | |
3490 | case DW_OP_deref_size: | |
3491 | return "DW_OP_deref_size"; | |
3492 | case DW_OP_xderef_size: | |
3493 | return "DW_OP_xderef_size"; | |
3494 | case DW_OP_nop: | |
3495 | return "DW_OP_nop"; | |
3496 | default: | |
3497 | return "OP_<unknown>"; | |
a3f97cbb JW |
3498 | } |
3499 | } | |
3500 | ||
3f76745e | 3501 | /* Convert a DWARF type code into its string name. */ |
71dfc51f | 3502 | |
487a6e06 | 3503 | #if 0 |
3f76745e JM |
3504 | static char * |
3505 | dwarf_type_encoding_name (enc) | |
3506 | register unsigned enc; | |
a3f97cbb | 3507 | { |
3f76745e | 3508 | switch (enc) |
a3f97cbb | 3509 | { |
3f76745e JM |
3510 | case DW_ATE_address: |
3511 | return "DW_ATE_address"; | |
3512 | case DW_ATE_boolean: | |
3513 | return "DW_ATE_boolean"; | |
3514 | case DW_ATE_complex_float: | |
3515 | return "DW_ATE_complex_float"; | |
3516 | case DW_ATE_float: | |
3517 | return "DW_ATE_float"; | |
3518 | case DW_ATE_signed: | |
3519 | return "DW_ATE_signed"; | |
3520 | case DW_ATE_signed_char: | |
3521 | return "DW_ATE_signed_char"; | |
3522 | case DW_ATE_unsigned: | |
3523 | return "DW_ATE_unsigned"; | |
3524 | case DW_ATE_unsigned_char: | |
3525 | return "DW_ATE_unsigned_char"; | |
3526 | default: | |
3527 | return "DW_ATE_<unknown>"; | |
3528 | } | |
a3f97cbb | 3529 | } |
487a6e06 | 3530 | #endif |
3f76745e JM |
3531 | \f |
3532 | /* Determine the "ultimate origin" of a decl. The decl may be an inlined | |
3533 | instance of an inlined instance of a decl which is local to an inline | |
3534 | function, so we have to trace all of the way back through the origin chain | |
3535 | to find out what sort of node actually served as the original seed for the | |
3536 | given block. */ | |
a3f97cbb | 3537 | |
3f76745e JM |
3538 | static tree |
3539 | decl_ultimate_origin (decl) | |
3540 | register tree decl; | |
a3f97cbb | 3541 | { |
02e24c7a MM |
3542 | #ifdef ENABLE_CHECKING |
3543 | if (DECL_FROM_INLINE (DECL_ORIGIN (decl))) | |
3544 | /* Since the DECL_ABSTRACT_ORIGIN for a DECL is supposed to be the | |
3545 | most distant ancestor, this should never happen. */ | |
3546 | abort (); | |
3547 | #endif | |
3f76745e | 3548 | |
02e24c7a | 3549 | return DECL_ABSTRACT_ORIGIN (decl); |
a3f97cbb JW |
3550 | } |
3551 | ||
3f76745e JM |
3552 | /* Determine the "ultimate origin" of a block. The block may be an inlined |
3553 | instance of an inlined instance of a block which is local to an inline | |
3554 | function, so we have to trace all of the way back through the origin chain | |
3555 | to find out what sort of node actually served as the original seed for the | |
3556 | given block. */ | |
71dfc51f | 3557 | |
3f76745e JM |
3558 | static tree |
3559 | block_ultimate_origin (block) | |
3560 | register tree block; | |
a3f97cbb | 3561 | { |
3f76745e | 3562 | register tree immediate_origin = BLOCK_ABSTRACT_ORIGIN (block); |
71dfc51f | 3563 | |
3f76745e JM |
3564 | if (immediate_origin == NULL_TREE) |
3565 | return NULL_TREE; | |
3566 | else | |
3567 | { | |
3568 | register tree ret_val; | |
3569 | register tree lookahead = immediate_origin; | |
71dfc51f | 3570 | |
3f76745e JM |
3571 | do |
3572 | { | |
3573 | ret_val = lookahead; | |
3574 | lookahead = (TREE_CODE (ret_val) == BLOCK) | |
3575 | ? BLOCK_ABSTRACT_ORIGIN (ret_val) | |
3576 | : NULL; | |
3577 | } | |
3578 | while (lookahead != NULL && lookahead != ret_val); | |
3579 | ||
3580 | return ret_val; | |
3581 | } | |
a3f97cbb JW |
3582 | } |
3583 | ||
3f76745e JM |
3584 | /* Get the class to which DECL belongs, if any. In g++, the DECL_CONTEXT |
3585 | of a virtual function may refer to a base class, so we check the 'this' | |
3586 | parameter. */ | |
71dfc51f | 3587 | |
3f76745e JM |
3588 | static tree |
3589 | decl_class_context (decl) | |
3590 | tree decl; | |
a3f97cbb | 3591 | { |
3f76745e | 3592 | tree context = NULL_TREE; |
71dfc51f | 3593 | |
3f76745e JM |
3594 | if (TREE_CODE (decl) != FUNCTION_DECL || ! DECL_VINDEX (decl)) |
3595 | context = DECL_CONTEXT (decl); | |
3596 | else | |
3597 | context = TYPE_MAIN_VARIANT | |
3598 | (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))))); | |
71dfc51f | 3599 | |
3f76745e JM |
3600 | if (context && TREE_CODE_CLASS (TREE_CODE (context)) != 't') |
3601 | context = NULL_TREE; | |
3602 | ||
3603 | return context; | |
a3f97cbb JW |
3604 | } |
3605 | \f | |
3f76745e | 3606 | /* Add an attribute/value pair to a DIE */ |
71dfc51f RK |
3607 | |
3608 | static inline void | |
3f76745e JM |
3609 | add_dwarf_attr (die, attr) |
3610 | register dw_die_ref die; | |
3611 | register dw_attr_ref attr; | |
a3f97cbb | 3612 | { |
3f76745e | 3613 | if (die != NULL && attr != NULL) |
a3f97cbb | 3614 | { |
3f76745e | 3615 | if (die->die_attr == NULL) |
a3f97cbb | 3616 | { |
3f76745e JM |
3617 | die->die_attr = attr; |
3618 | die->die_attr_last = attr; | |
3619 | } | |
3620 | else | |
3621 | { | |
3622 | die->die_attr_last->dw_attr_next = attr; | |
3623 | die->die_attr_last = attr; | |
a3f97cbb | 3624 | } |
a3f97cbb JW |
3625 | } |
3626 | } | |
3627 | ||
3f76745e | 3628 | /* Add a flag value attribute to a DIE. */ |
71dfc51f | 3629 | |
3f76745e JM |
3630 | static inline void |
3631 | add_AT_flag (die, attr_kind, flag) | |
3632 | register dw_die_ref die; | |
3633 | register enum dwarf_attribute attr_kind; | |
3634 | register unsigned flag; | |
a3f97cbb | 3635 | { |
3f76745e | 3636 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3637 | |
3f76745e JM |
3638 | attr->dw_attr_next = NULL; |
3639 | attr->dw_attr = attr_kind; | |
3640 | attr->dw_attr_val.val_class = dw_val_class_flag; | |
3641 | attr->dw_attr_val.v.val_flag = flag; | |
3642 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3643 | } |
3644 | ||
3f76745e | 3645 | /* Add a signed integer attribute value to a DIE. */ |
71dfc51f | 3646 | |
3f76745e JM |
3647 | static inline void |
3648 | add_AT_int (die, attr_kind, int_val) | |
3649 | register dw_die_ref die; | |
3650 | register enum dwarf_attribute attr_kind; | |
3651 | register long int int_val; | |
a3f97cbb | 3652 | { |
3f76745e JM |
3653 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3654 | ||
3655 | attr->dw_attr_next = NULL; | |
3656 | attr->dw_attr = attr_kind; | |
3657 | attr->dw_attr_val.val_class = dw_val_class_const; | |
3658 | attr->dw_attr_val.v.val_int = int_val; | |
3659 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3660 | } |
3661 | ||
3f76745e | 3662 | /* Add an unsigned integer attribute value to a DIE. */ |
71dfc51f | 3663 | |
3f76745e JM |
3664 | static inline void |
3665 | add_AT_unsigned (die, attr_kind, unsigned_val) | |
3666 | register dw_die_ref die; | |
3667 | register enum dwarf_attribute attr_kind; | |
3668 | register unsigned long unsigned_val; | |
a3f97cbb | 3669 | { |
3f76745e JM |
3670 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3671 | ||
3672 | attr->dw_attr_next = NULL; | |
3673 | attr->dw_attr = attr_kind; | |
3674 | attr->dw_attr_val.val_class = dw_val_class_unsigned_const; | |
3675 | attr->dw_attr_val.v.val_unsigned = unsigned_val; | |
3676 | add_dwarf_attr (die, attr); | |
a3f97cbb | 3677 | } |
71dfc51f | 3678 | |
3f76745e JM |
3679 | /* Add an unsigned double integer attribute value to a DIE. */ |
3680 | ||
3681 | static inline void | |
3682 | add_AT_long_long (die, attr_kind, val_hi, val_low) | |
a3f97cbb | 3683 | register dw_die_ref die; |
3f76745e JM |
3684 | register enum dwarf_attribute attr_kind; |
3685 | register unsigned long val_hi; | |
3686 | register unsigned long val_low; | |
a3f97cbb | 3687 | { |
3f76745e | 3688 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3689 | |
3f76745e JM |
3690 | attr->dw_attr_next = NULL; |
3691 | attr->dw_attr = attr_kind; | |
3692 | attr->dw_attr_val.val_class = dw_val_class_long_long; | |
3693 | attr->dw_attr_val.v.val_long_long.hi = val_hi; | |
3694 | attr->dw_attr_val.v.val_long_long.low = val_low; | |
3695 | add_dwarf_attr (die, attr); | |
3696 | } | |
71dfc51f | 3697 | |
3f76745e | 3698 | /* Add a floating point attribute value to a DIE and return it. */ |
71dfc51f | 3699 | |
3f76745e JM |
3700 | static inline void |
3701 | add_AT_float (die, attr_kind, length, array) | |
3702 | register dw_die_ref die; | |
3703 | register enum dwarf_attribute attr_kind; | |
3704 | register unsigned length; | |
3705 | register long *array; | |
3706 | { | |
3707 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
3708 | ||
3709 | attr->dw_attr_next = NULL; | |
3710 | attr->dw_attr = attr_kind; | |
3711 | attr->dw_attr_val.val_class = dw_val_class_float; | |
3712 | attr->dw_attr_val.v.val_float.length = length; | |
3713 | attr->dw_attr_val.v.val_float.array = array; | |
3714 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3715 | } |
3716 | ||
3f76745e | 3717 | /* Add a string attribute value to a DIE. */ |
71dfc51f | 3718 | |
3f76745e JM |
3719 | static inline void |
3720 | add_AT_string (die, attr_kind, str) | |
a3f97cbb | 3721 | register dw_die_ref die; |
3f76745e JM |
3722 | register enum dwarf_attribute attr_kind; |
3723 | register char *str; | |
a3f97cbb | 3724 | { |
3f76745e | 3725 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3726 | |
3f76745e JM |
3727 | attr->dw_attr_next = NULL; |
3728 | attr->dw_attr = attr_kind; | |
3729 | attr->dw_attr_val.val_class = dw_val_class_str; | |
3730 | attr->dw_attr_val.v.val_str = xstrdup (str); | |
3731 | add_dwarf_attr (die, attr); | |
3732 | } | |
71dfc51f | 3733 | |
3f76745e | 3734 | /* Add a DIE reference attribute value to a DIE. */ |
71dfc51f | 3735 | |
3f76745e JM |
3736 | static inline void |
3737 | add_AT_die_ref (die, attr_kind, targ_die) | |
3738 | register dw_die_ref die; | |
3739 | register enum dwarf_attribute attr_kind; | |
3740 | register dw_die_ref targ_die; | |
3741 | { | |
3742 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3743 | |
3f76745e JM |
3744 | attr->dw_attr_next = NULL; |
3745 | attr->dw_attr = attr_kind; | |
3746 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
3747 | attr->dw_attr_val.v.val_die_ref = targ_die; | |
3748 | add_dwarf_attr (die, attr); | |
3749 | } | |
b1ccbc24 | 3750 | |
3f76745e | 3751 | /* Add an FDE reference attribute value to a DIE. */ |
b1ccbc24 | 3752 | |
3f76745e JM |
3753 | static inline void |
3754 | add_AT_fde_ref (die, attr_kind, targ_fde) | |
3755 | register dw_die_ref die; | |
3756 | register enum dwarf_attribute attr_kind; | |
3757 | register unsigned targ_fde; | |
3758 | { | |
3759 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
b1ccbc24 | 3760 | |
3f76745e JM |
3761 | attr->dw_attr_next = NULL; |
3762 | attr->dw_attr = attr_kind; | |
3763 | attr->dw_attr_val.val_class = dw_val_class_fde_ref; | |
3764 | attr->dw_attr_val.v.val_fde_index = targ_fde; | |
3765 | add_dwarf_attr (die, attr); | |
a3f97cbb | 3766 | } |
71dfc51f | 3767 | |
3f76745e | 3768 | /* Add a location description attribute value to a DIE. */ |
71dfc51f | 3769 | |
3f76745e JM |
3770 | static inline void |
3771 | add_AT_loc (die, attr_kind, loc) | |
3772 | register dw_die_ref die; | |
3773 | register enum dwarf_attribute attr_kind; | |
3774 | register dw_loc_descr_ref loc; | |
3775 | { | |
3776 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3777 | |
3f76745e JM |
3778 | attr->dw_attr_next = NULL; |
3779 | attr->dw_attr = attr_kind; | |
3780 | attr->dw_attr_val.val_class = dw_val_class_loc; | |
3781 | attr->dw_attr_val.v.val_loc = loc; | |
3782 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3783 | } |
3784 | ||
3f76745e | 3785 | /* Add an address constant attribute value to a DIE. */ |
71dfc51f | 3786 | |
3f76745e JM |
3787 | static inline void |
3788 | add_AT_addr (die, attr_kind, addr) | |
3789 | register dw_die_ref die; | |
3790 | register enum dwarf_attribute attr_kind; | |
3791 | char *addr; | |
a3f97cbb | 3792 | { |
3f76745e | 3793 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3794 | |
3f76745e JM |
3795 | attr->dw_attr_next = NULL; |
3796 | attr->dw_attr = attr_kind; | |
3797 | attr->dw_attr_val.val_class = dw_val_class_addr; | |
3798 | attr->dw_attr_val.v.val_addr = addr; | |
3799 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3800 | } |
3801 | ||
3f76745e | 3802 | /* Add a label identifier attribute value to a DIE. */ |
71dfc51f | 3803 | |
3f76745e JM |
3804 | static inline void |
3805 | add_AT_lbl_id (die, attr_kind, lbl_id) | |
3806 | register dw_die_ref die; | |
3807 | register enum dwarf_attribute attr_kind; | |
3808 | register char *lbl_id; | |
a3f97cbb | 3809 | { |
3f76745e | 3810 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3811 | |
3f76745e JM |
3812 | attr->dw_attr_next = NULL; |
3813 | attr->dw_attr = attr_kind; | |
3814 | attr->dw_attr_val.val_class = dw_val_class_lbl_id; | |
3815 | attr->dw_attr_val.v.val_lbl_id = xstrdup (lbl_id); | |
3816 | add_dwarf_attr (die, attr); | |
3817 | } | |
71dfc51f | 3818 | |
3f76745e JM |
3819 | /* Add a section offset attribute value to a DIE. */ |
3820 | ||
3821 | static inline void | |
1553e85a | 3822 | add_AT_section_offset (die, attr_kind, section) |
3f76745e JM |
3823 | register dw_die_ref die; |
3824 | register enum dwarf_attribute attr_kind; | |
1553e85a | 3825 | register char *section; |
3f76745e JM |
3826 | { |
3827 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3828 | |
3f76745e JM |
3829 | attr->dw_attr_next = NULL; |
3830 | attr->dw_attr = attr_kind; | |
3831 | attr->dw_attr_val.val_class = dw_val_class_section_offset; | |
1553e85a | 3832 | attr->dw_attr_val.v.val_section = section; |
3f76745e JM |
3833 | add_dwarf_attr (die, attr); |
3834 | ||
a3f97cbb JW |
3835 | } |
3836 | ||
3f76745e | 3837 | /* Test if die refers to an external subroutine. */ |
71dfc51f | 3838 | |
3f76745e JM |
3839 | static inline int |
3840 | is_extern_subr_die (die) | |
3841 | register dw_die_ref die; | |
a3f97cbb | 3842 | { |
3f76745e JM |
3843 | register dw_attr_ref a; |
3844 | register int is_subr = FALSE; | |
3845 | register int is_extern = FALSE; | |
71dfc51f | 3846 | |
3f76745e | 3847 | if (die != NULL && die->die_tag == DW_TAG_subprogram) |
a3f97cbb | 3848 | { |
3f76745e JM |
3849 | is_subr = TRUE; |
3850 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
3851 | { | |
3852 | if (a->dw_attr == DW_AT_external | |
3853 | && a->dw_attr_val.val_class == dw_val_class_flag | |
3854 | && a->dw_attr_val.v.val_flag != 0) | |
3855 | { | |
3856 | is_extern = TRUE; | |
3857 | break; | |
3858 | } | |
3859 | } | |
a3f97cbb | 3860 | } |
71dfc51f | 3861 | |
3f76745e | 3862 | return is_subr && is_extern; |
a3f97cbb JW |
3863 | } |
3864 | ||
3f76745e | 3865 | /* Get the attribute of type attr_kind. */ |
71dfc51f | 3866 | |
3f76745e JM |
3867 | static inline dw_attr_ref |
3868 | get_AT (die, attr_kind) | |
3869 | register dw_die_ref die; | |
3870 | register enum dwarf_attribute attr_kind; | |
f37230f0 | 3871 | { |
3f76745e JM |
3872 | register dw_attr_ref a; |
3873 | register dw_die_ref spec = NULL; | |
3874 | ||
3875 | if (die != NULL) | |
3876 | { | |
3877 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
3878 | { | |
3879 | if (a->dw_attr == attr_kind) | |
3880 | return a; | |
71dfc51f | 3881 | |
3f76745e JM |
3882 | if (a->dw_attr == DW_AT_specification |
3883 | || a->dw_attr == DW_AT_abstract_origin) | |
3884 | spec = a->dw_attr_val.v.val_die_ref; | |
3885 | } | |
71dfc51f | 3886 | |
3f76745e JM |
3887 | if (spec) |
3888 | return get_AT (spec, attr_kind); | |
3889 | } | |
3890 | ||
3891 | return NULL; | |
f37230f0 JM |
3892 | } |
3893 | ||
3f76745e JM |
3894 | /* Return the "low pc" attribute value, typically associated with |
3895 | a subprogram DIE. Return null if the "low pc" attribute is | |
3896 | either not prsent, or if it cannot be represented as an | |
3897 | assembler label identifier. */ | |
71dfc51f | 3898 | |
3f76745e JM |
3899 | static inline char * |
3900 | get_AT_low_pc (die) | |
3901 | register dw_die_ref die; | |
7e23cb16 | 3902 | { |
3f76745e | 3903 | register dw_attr_ref a = get_AT (die, DW_AT_low_pc); |
7e23cb16 | 3904 | |
3f76745e JM |
3905 | if (a && a->dw_attr_val.val_class == dw_val_class_lbl_id) |
3906 | return a->dw_attr_val.v.val_lbl_id; | |
7e23cb16 | 3907 | |
3f76745e | 3908 | return NULL; |
7e23cb16 JM |
3909 | } |
3910 | ||
3f76745e JM |
3911 | /* Return the "high pc" attribute value, typically associated with |
3912 | a subprogram DIE. Return null if the "high pc" attribute is | |
3913 | either not prsent, or if it cannot be represented as an | |
3914 | assembler label identifier. */ | |
71dfc51f | 3915 | |
3f76745e JM |
3916 | static inline char * |
3917 | get_AT_hi_pc (die) | |
a3f97cbb JW |
3918 | register dw_die_ref die; |
3919 | { | |
3f76745e | 3920 | register dw_attr_ref a = get_AT (die, DW_AT_high_pc); |
71dfc51f | 3921 | |
3f76745e JM |
3922 | if (a && a->dw_attr_val.val_class == dw_val_class_lbl_id) |
3923 | return a->dw_attr_val.v.val_lbl_id; | |
f37230f0 | 3924 | |
3f76745e JM |
3925 | return NULL; |
3926 | } | |
3927 | ||
3928 | /* Return the value of the string attribute designated by ATTR_KIND, or | |
3929 | NULL if it is not present. */ | |
71dfc51f | 3930 | |
3f76745e JM |
3931 | static inline char * |
3932 | get_AT_string (die, attr_kind) | |
3933 | register dw_die_ref die; | |
3934 | register enum dwarf_attribute attr_kind; | |
3935 | { | |
3936 | register dw_attr_ref a = get_AT (die, attr_kind); | |
3937 | ||
3938 | if (a && a->dw_attr_val.val_class == dw_val_class_str) | |
3939 | return a->dw_attr_val.v.val_str; | |
3940 | ||
3941 | return NULL; | |
a3f97cbb JW |
3942 | } |
3943 | ||
3f76745e JM |
3944 | /* Return the value of the flag attribute designated by ATTR_KIND, or -1 |
3945 | if it is not present. */ | |
71dfc51f | 3946 | |
3f76745e JM |
3947 | static inline int |
3948 | get_AT_flag (die, attr_kind) | |
3949 | register dw_die_ref die; | |
3950 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 3951 | { |
3f76745e | 3952 | register dw_attr_ref a = get_AT (die, attr_kind); |
71dfc51f | 3953 | |
3f76745e JM |
3954 | if (a && a->dw_attr_val.val_class == dw_val_class_flag) |
3955 | return a->dw_attr_val.v.val_flag; | |
71dfc51f | 3956 | |
3f76745e | 3957 | return -1; |
a3f97cbb JW |
3958 | } |
3959 | ||
3f76745e JM |
3960 | /* Return the value of the unsigned attribute designated by ATTR_KIND, or 0 |
3961 | if it is not present. */ | |
71dfc51f | 3962 | |
3f76745e JM |
3963 | static inline unsigned |
3964 | get_AT_unsigned (die, attr_kind) | |
3965 | register dw_die_ref die; | |
3966 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 3967 | { |
3f76745e | 3968 | register dw_attr_ref a = get_AT (die, attr_kind); |
71dfc51f | 3969 | |
3f76745e JM |
3970 | if (a && a->dw_attr_val.val_class == dw_val_class_unsigned_const) |
3971 | return a->dw_attr_val.v.val_unsigned; | |
71dfc51f | 3972 | |
3f76745e JM |
3973 | return 0; |
3974 | } | |
71dfc51f | 3975 | |
3f76745e JM |
3976 | static inline int |
3977 | is_c_family () | |
3978 | { | |
3979 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 3980 | |
3f76745e JM |
3981 | return (lang == DW_LANG_C || lang == DW_LANG_C89 |
3982 | || lang == DW_LANG_C_plus_plus); | |
3983 | } | |
71dfc51f | 3984 | |
3f76745e JM |
3985 | static inline int |
3986 | is_fortran () | |
3987 | { | |
3988 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 3989 | |
3f76745e JM |
3990 | return (lang == DW_LANG_Fortran77 || lang == DW_LANG_Fortran90); |
3991 | } | |
71dfc51f | 3992 | |
3f76745e | 3993 | /* Remove the specified attribute if present. */ |
71dfc51f | 3994 | |
3f76745e JM |
3995 | static inline void |
3996 | remove_AT (die, attr_kind) | |
3997 | register dw_die_ref die; | |
3998 | register enum dwarf_attribute attr_kind; | |
3999 | { | |
4000 | register dw_attr_ref a; | |
4001 | register dw_attr_ref removed = NULL;; | |
a3f97cbb | 4002 | |
3f76745e JM |
4003 | if (die != NULL) |
4004 | { | |
4005 | if (die->die_attr->dw_attr == attr_kind) | |
4006 | { | |
4007 | removed = die->die_attr; | |
4008 | if (die->die_attr_last == die->die_attr) | |
4009 | die->die_attr_last = NULL; | |
71dfc51f | 4010 | |
3f76745e JM |
4011 | die->die_attr = die->die_attr->dw_attr_next; |
4012 | } | |
71dfc51f | 4013 | |
3f76745e JM |
4014 | else |
4015 | for (a = die->die_attr; a->dw_attr_next != NULL; | |
4016 | a = a->dw_attr_next) | |
4017 | if (a->dw_attr_next->dw_attr == attr_kind) | |
4018 | { | |
4019 | removed = a->dw_attr_next; | |
4020 | if (die->die_attr_last == a->dw_attr_next) | |
4021 | die->die_attr_last = a; | |
71dfc51f | 4022 | |
3f76745e JM |
4023 | a->dw_attr_next = a->dw_attr_next->dw_attr_next; |
4024 | break; | |
4025 | } | |
71dfc51f | 4026 | |
3f76745e JM |
4027 | if (removed != 0) |
4028 | free (removed); | |
4029 | } | |
4030 | } | |
71dfc51f | 4031 | |
3f76745e | 4032 | /* Discard the children of this DIE. */ |
71dfc51f | 4033 | |
3f76745e JM |
4034 | static inline void |
4035 | remove_children (die) | |
4036 | register dw_die_ref die; | |
4037 | { | |
4038 | register dw_die_ref child_die = die->die_child; | |
4039 | ||
4040 | die->die_child = NULL; | |
4041 | die->die_child_last = NULL; | |
4042 | ||
4043 | while (child_die != NULL) | |
a3f97cbb | 4044 | { |
3f76745e JM |
4045 | register dw_die_ref tmp_die = child_die; |
4046 | register dw_attr_ref a; | |
71dfc51f | 4047 | |
3f76745e JM |
4048 | child_die = child_die->die_sib; |
4049 | ||
4050 | for (a = tmp_die->die_attr; a != NULL; ) | |
a3f97cbb | 4051 | { |
3f76745e | 4052 | register dw_attr_ref tmp_a = a; |
71dfc51f | 4053 | |
3f76745e JM |
4054 | a = a->dw_attr_next; |
4055 | free (tmp_a); | |
a3f97cbb | 4056 | } |
71dfc51f | 4057 | |
3f76745e JM |
4058 | free (tmp_die); |
4059 | } | |
4060 | } | |
71dfc51f | 4061 | |
3f76745e | 4062 | /* Add a child DIE below its parent. */ |
71dfc51f | 4063 | |
3f76745e JM |
4064 | static inline void |
4065 | add_child_die (die, child_die) | |
4066 | register dw_die_ref die; | |
4067 | register dw_die_ref child_die; | |
4068 | { | |
4069 | if (die != NULL && child_die != NULL) | |
e90b62db | 4070 | { |
3a88cbd1 JL |
4071 | if (die == child_die) |
4072 | abort (); | |
3f76745e JM |
4073 | child_die->die_parent = die; |
4074 | child_die->die_sib = NULL; | |
4075 | ||
4076 | if (die->die_child == NULL) | |
e90b62db | 4077 | { |
3f76745e JM |
4078 | die->die_child = child_die; |
4079 | die->die_child_last = child_die; | |
e90b62db JM |
4080 | } |
4081 | else | |
e90b62db | 4082 | { |
3f76745e JM |
4083 | die->die_child_last->die_sib = child_die; |
4084 | die->die_child_last = child_die; | |
e90b62db | 4085 | } |
3f76745e JM |
4086 | } |
4087 | } | |
4088 | ||
4089 | /* Return a pointer to a newly created DIE node. */ | |
4090 | ||
4091 | static inline dw_die_ref | |
4092 | new_die (tag_value, parent_die) | |
4093 | register enum dwarf_tag tag_value; | |
4094 | register dw_die_ref parent_die; | |
4095 | { | |
4096 | register dw_die_ref die = (dw_die_ref) xmalloc (sizeof (die_node)); | |
4097 | ||
4098 | die->die_tag = tag_value; | |
4099 | die->die_abbrev = 0; | |
4100 | die->die_offset = 0; | |
4101 | die->die_child = NULL; | |
4102 | die->die_parent = NULL; | |
4103 | die->die_sib = NULL; | |
4104 | die->die_child_last = NULL; | |
4105 | die->die_attr = NULL; | |
4106 | die->die_attr_last = NULL; | |
4107 | ||
4108 | if (parent_die != NULL) | |
4109 | add_child_die (parent_die, die); | |
4110 | else | |
ef76d03b JW |
4111 | { |
4112 | limbo_die_node *limbo_node; | |
4113 | ||
4114 | limbo_node = (limbo_die_node *) xmalloc (sizeof (limbo_die_node)); | |
4115 | limbo_node->die = die; | |
4116 | limbo_node->next = limbo_die_list; | |
4117 | limbo_die_list = limbo_node; | |
4118 | } | |
71dfc51f | 4119 | |
3f76745e JM |
4120 | return die; |
4121 | } | |
71dfc51f | 4122 | |
3f76745e | 4123 | /* Return the DIE associated with the given type specifier. */ |
71dfc51f | 4124 | |
3f76745e JM |
4125 | static inline dw_die_ref |
4126 | lookup_type_die (type) | |
4127 | register tree type; | |
4128 | { | |
4129 | return (dw_die_ref) TYPE_SYMTAB_POINTER (type); | |
4130 | } | |
e90b62db | 4131 | |
3f76745e | 4132 | /* Equate a DIE to a given type specifier. */ |
71dfc51f | 4133 | |
3f76745e JM |
4134 | static void |
4135 | equate_type_number_to_die (type, type_die) | |
4136 | register tree type; | |
4137 | register dw_die_ref type_die; | |
4138 | { | |
4139 | TYPE_SYMTAB_POINTER (type) = (char *) type_die; | |
4140 | } | |
71dfc51f | 4141 | |
3f76745e | 4142 | /* Return the DIE associated with a given declaration. */ |
71dfc51f | 4143 | |
3f76745e JM |
4144 | static inline dw_die_ref |
4145 | lookup_decl_die (decl) | |
4146 | register tree decl; | |
4147 | { | |
4148 | register unsigned decl_id = DECL_UID (decl); | |
4149 | ||
4150 | return (decl_id < decl_die_table_in_use | |
4151 | ? decl_die_table[decl_id] : NULL); | |
a3f97cbb JW |
4152 | } |
4153 | ||
3f76745e | 4154 | /* Equate a DIE to a particular declaration. */ |
71dfc51f | 4155 | |
3f76745e JM |
4156 | static void |
4157 | equate_decl_number_to_die (decl, decl_die) | |
4158 | register tree decl; | |
4159 | register dw_die_ref decl_die; | |
a3f97cbb | 4160 | { |
3f76745e | 4161 | register unsigned decl_id = DECL_UID (decl); |
3f76745e | 4162 | register unsigned num_allocated; |
d291dd49 | 4163 | |
3f76745e | 4164 | if (decl_id >= decl_die_table_allocated) |
a3f97cbb | 4165 | { |
3f76745e JM |
4166 | num_allocated |
4167 | = ((decl_id + 1 + DECL_DIE_TABLE_INCREMENT - 1) | |
4168 | / DECL_DIE_TABLE_INCREMENT) | |
4169 | * DECL_DIE_TABLE_INCREMENT; | |
4170 | ||
4171 | decl_die_table | |
4172 | = (dw_die_ref *) xrealloc (decl_die_table, | |
4173 | sizeof (dw_die_ref) * num_allocated); | |
4174 | ||
4175 | bzero ((char *) &decl_die_table[decl_die_table_allocated], | |
4176 | (num_allocated - decl_die_table_allocated) * sizeof (dw_die_ref)); | |
4177 | decl_die_table_allocated = num_allocated; | |
a3f97cbb | 4178 | } |
71dfc51f | 4179 | |
3f76745e JM |
4180 | if (decl_id >= decl_die_table_in_use) |
4181 | decl_die_table_in_use = (decl_id + 1); | |
4182 | ||
4183 | decl_die_table[decl_id] = decl_die; | |
a3f97cbb JW |
4184 | } |
4185 | ||
3f76745e JM |
4186 | /* Return a pointer to a newly allocated location description. Location |
4187 | descriptions are simple expression terms that can be strung | |
4188 | together to form more complicated location (address) descriptions. */ | |
71dfc51f | 4189 | |
3f76745e JM |
4190 | static inline dw_loc_descr_ref |
4191 | new_loc_descr (op, oprnd1, oprnd2) | |
4192 | register enum dwarf_location_atom op; | |
4193 | register unsigned long oprnd1; | |
4194 | register unsigned long oprnd2; | |
a3f97cbb | 4195 | { |
3f76745e JM |
4196 | register dw_loc_descr_ref descr |
4197 | = (dw_loc_descr_ref) xmalloc (sizeof (dw_loc_descr_node)); | |
71dfc51f | 4198 | |
3f76745e JM |
4199 | descr->dw_loc_next = NULL; |
4200 | descr->dw_loc_opc = op; | |
4201 | descr->dw_loc_oprnd1.val_class = dw_val_class_unsigned_const; | |
4202 | descr->dw_loc_oprnd1.v.val_unsigned = oprnd1; | |
4203 | descr->dw_loc_oprnd2.val_class = dw_val_class_unsigned_const; | |
4204 | descr->dw_loc_oprnd2.v.val_unsigned = oprnd2; | |
71dfc51f | 4205 | |
3f76745e | 4206 | return descr; |
a3f97cbb | 4207 | } |
71dfc51f | 4208 | |
3f76745e JM |
4209 | /* Add a location description term to a location description expression. */ |
4210 | ||
4211 | static inline void | |
4212 | add_loc_descr (list_head, descr) | |
4213 | register dw_loc_descr_ref *list_head; | |
4214 | register dw_loc_descr_ref descr; | |
a3f97cbb | 4215 | { |
3f76745e | 4216 | register dw_loc_descr_ref *d; |
71dfc51f | 4217 | |
3f76745e JM |
4218 | /* Find the end of the chain. */ |
4219 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) | |
4220 | ; | |
71dfc51f | 4221 | |
3f76745e JM |
4222 | *d = descr; |
4223 | } | |
4224 | \f | |
4225 | /* Keep track of the number of spaces used to indent the | |
4226 | output of the debugging routines that print the structure of | |
4227 | the DIE internal representation. */ | |
4228 | static int print_indent; | |
71dfc51f | 4229 | |
3f76745e JM |
4230 | /* Indent the line the number of spaces given by print_indent. */ |
4231 | ||
4232 | static inline void | |
4233 | print_spaces (outfile) | |
4234 | FILE *outfile; | |
4235 | { | |
4236 | fprintf (outfile, "%*s", print_indent, ""); | |
a3f97cbb JW |
4237 | } |
4238 | ||
956d6950 | 4239 | /* Print the information associated with a given DIE, and its children. |
3f76745e | 4240 | This routine is a debugging aid only. */ |
71dfc51f | 4241 | |
a3f97cbb | 4242 | static void |
3f76745e JM |
4243 | print_die (die, outfile) |
4244 | dw_die_ref die; | |
4245 | FILE *outfile; | |
a3f97cbb | 4246 | { |
3f76745e JM |
4247 | register dw_attr_ref a; |
4248 | register dw_die_ref c; | |
71dfc51f | 4249 | |
3f76745e | 4250 | print_spaces (outfile); |
2d8b0f3a | 4251 | fprintf (outfile, "DIE %4lu: %s\n", |
3f76745e JM |
4252 | die->die_offset, dwarf_tag_name (die->die_tag)); |
4253 | print_spaces (outfile); | |
2d8b0f3a JL |
4254 | fprintf (outfile, " abbrev id: %lu", die->die_abbrev); |
4255 | fprintf (outfile, " offset: %lu\n", die->die_offset); | |
3f76745e JM |
4256 | |
4257 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
a3f97cbb | 4258 | { |
3f76745e JM |
4259 | print_spaces (outfile); |
4260 | fprintf (outfile, " %s: ", dwarf_attr_name (a->dw_attr)); | |
4261 | ||
4262 | switch (a->dw_attr_val.val_class) | |
4263 | { | |
4264 | case dw_val_class_addr: | |
4265 | fprintf (outfile, "address"); | |
4266 | break; | |
4267 | case dw_val_class_loc: | |
4268 | fprintf (outfile, "location descriptor"); | |
4269 | break; | |
4270 | case dw_val_class_const: | |
2d8b0f3a | 4271 | fprintf (outfile, "%ld", a->dw_attr_val.v.val_int); |
3f76745e JM |
4272 | break; |
4273 | case dw_val_class_unsigned_const: | |
2d8b0f3a | 4274 | fprintf (outfile, "%lu", a->dw_attr_val.v.val_unsigned); |
3f76745e JM |
4275 | break; |
4276 | case dw_val_class_long_long: | |
2d8b0f3a | 4277 | fprintf (outfile, "constant (%lu,%lu)", |
3f76745e JM |
4278 | a->dw_attr_val.v.val_long_long.hi, |
4279 | a->dw_attr_val.v.val_long_long.low); | |
4280 | break; | |
4281 | case dw_val_class_float: | |
4282 | fprintf (outfile, "floating-point constant"); | |
4283 | break; | |
4284 | case dw_val_class_flag: | |
4285 | fprintf (outfile, "%u", a->dw_attr_val.v.val_flag); | |
4286 | break; | |
4287 | case dw_val_class_die_ref: | |
4288 | if (a->dw_attr_val.v.val_die_ref != NULL) | |
2d8b0f3a | 4289 | fprintf (outfile, "die -> %lu", |
3f76745e JM |
4290 | a->dw_attr_val.v.val_die_ref->die_offset); |
4291 | else | |
4292 | fprintf (outfile, "die -> <null>"); | |
4293 | break; | |
4294 | case dw_val_class_lbl_id: | |
4295 | fprintf (outfile, "label: %s", a->dw_attr_val.v.val_lbl_id); | |
4296 | break; | |
4297 | case dw_val_class_section_offset: | |
1553e85a | 4298 | fprintf (outfile, "section: %s", a->dw_attr_val.v.val_section); |
3f76745e JM |
4299 | break; |
4300 | case dw_val_class_str: | |
4301 | if (a->dw_attr_val.v.val_str != NULL) | |
4302 | fprintf (outfile, "\"%s\"", a->dw_attr_val.v.val_str); | |
4303 | else | |
4304 | fprintf (outfile, "<null>"); | |
4305 | break; | |
e9a25f70 JL |
4306 | default: |
4307 | break; | |
3f76745e JM |
4308 | } |
4309 | ||
4310 | fprintf (outfile, "\n"); | |
4311 | } | |
4312 | ||
4313 | if (die->die_child != NULL) | |
4314 | { | |
4315 | print_indent += 4; | |
4316 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4317 | print_die (c, outfile); | |
71dfc51f | 4318 | |
3f76745e | 4319 | print_indent -= 4; |
a3f97cbb | 4320 | } |
a3f97cbb JW |
4321 | } |
4322 | ||
3f76745e JM |
4323 | /* Print the contents of the source code line number correspondence table. |
4324 | This routine is a debugging aid only. */ | |
71dfc51f | 4325 | |
3f76745e JM |
4326 | static void |
4327 | print_dwarf_line_table (outfile) | |
4328 | FILE *outfile; | |
a3f97cbb | 4329 | { |
3f76745e JM |
4330 | register unsigned i; |
4331 | register dw_line_info_ref line_info; | |
4332 | ||
4333 | fprintf (outfile, "\n\nDWARF source line information\n"); | |
4334 | for (i = 1; i < line_info_table_in_use; ++i) | |
a3f97cbb | 4335 | { |
3f76745e JM |
4336 | line_info = &line_info_table[i]; |
4337 | fprintf (outfile, "%5d: ", i); | |
4338 | fprintf (outfile, "%-20s", file_table[line_info->dw_file_num]); | |
2d8b0f3a | 4339 | fprintf (outfile, "%6ld", line_info->dw_line_num); |
3f76745e | 4340 | fprintf (outfile, "\n"); |
a3f97cbb | 4341 | } |
3f76745e JM |
4342 | |
4343 | fprintf (outfile, "\n\n"); | |
f37230f0 JM |
4344 | } |
4345 | ||
3f76745e JM |
4346 | /* Print the information collected for a given DIE. */ |
4347 | ||
4348 | void | |
4349 | debug_dwarf_die (die) | |
4350 | dw_die_ref die; | |
4351 | { | |
4352 | print_die (die, stderr); | |
4353 | } | |
4354 | ||
4355 | /* Print all DWARF information collected for the compilation unit. | |
4356 | This routine is a debugging aid only. */ | |
4357 | ||
4358 | void | |
4359 | debug_dwarf () | |
4360 | { | |
4361 | print_indent = 0; | |
4362 | print_die (comp_unit_die, stderr); | |
4363 | print_dwarf_line_table (stderr); | |
4364 | } | |
4365 | \f | |
4366 | /* Traverse the DIE, and add a sibling attribute if it may have the | |
4367 | effect of speeding up access to siblings. To save some space, | |
4368 | avoid generating sibling attributes for DIE's without children. */ | |
71dfc51f | 4369 | |
f37230f0 | 4370 | static void |
3f76745e JM |
4371 | add_sibling_attributes(die) |
4372 | register dw_die_ref die; | |
f37230f0 | 4373 | { |
3f76745e JM |
4374 | register dw_die_ref c; |
4375 | register dw_attr_ref attr; | |
4376 | if (die != comp_unit_die && die->die_child != NULL) | |
4377 | { | |
4378 | attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
4379 | attr->dw_attr_next = NULL; | |
4380 | attr->dw_attr = DW_AT_sibling; | |
4381 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
4382 | attr->dw_attr_val.v.val_die_ref = die->die_sib; | |
71dfc51f | 4383 | |
3f76745e JM |
4384 | /* Add the sibling link to the front of the attribute list. */ |
4385 | attr->dw_attr_next = die->die_attr; | |
4386 | if (die->die_attr == NULL) | |
4387 | die->die_attr_last = attr; | |
71dfc51f | 4388 | |
3f76745e JM |
4389 | die->die_attr = attr; |
4390 | } | |
4391 | ||
4392 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4393 | add_sibling_attributes (c); | |
a3f97cbb JW |
4394 | } |
4395 | ||
3f76745e JM |
4396 | /* The format of each DIE (and its attribute value pairs) |
4397 | is encoded in an abbreviation table. This routine builds the | |
4398 | abbreviation table and assigns a unique abbreviation id for | |
4399 | each abbreviation entry. The children of each die are visited | |
4400 | recursively. */ | |
71dfc51f | 4401 | |
a3f97cbb | 4402 | static void |
3f76745e JM |
4403 | build_abbrev_table (die) |
4404 | register dw_die_ref die; | |
a3f97cbb | 4405 | { |
3f76745e JM |
4406 | register unsigned long abbrev_id; |
4407 | register unsigned long n_alloc; | |
4408 | register dw_die_ref c; | |
4409 | register dw_attr_ref d_attr, a_attr; | |
a3f97cbb JW |
4410 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) |
4411 | { | |
4412 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 4413 | |
3f76745e JM |
4414 | if (abbrev->die_tag == die->die_tag) |
4415 | { | |
4416 | if ((abbrev->die_child != NULL) == (die->die_child != NULL)) | |
4417 | { | |
4418 | a_attr = abbrev->die_attr; | |
4419 | d_attr = die->die_attr; | |
71dfc51f | 4420 | |
3f76745e JM |
4421 | while (a_attr != NULL && d_attr != NULL) |
4422 | { | |
4423 | if ((a_attr->dw_attr != d_attr->dw_attr) | |
4424 | || (value_format (&a_attr->dw_attr_val) | |
4425 | != value_format (&d_attr->dw_attr_val))) | |
4426 | break; | |
71dfc51f | 4427 | |
3f76745e JM |
4428 | a_attr = a_attr->dw_attr_next; |
4429 | d_attr = d_attr->dw_attr_next; | |
4430 | } | |
71dfc51f | 4431 | |
3f76745e JM |
4432 | if (a_attr == NULL && d_attr == NULL) |
4433 | break; | |
4434 | } | |
4435 | } | |
4436 | } | |
71dfc51f | 4437 | |
3f76745e JM |
4438 | if (abbrev_id >= abbrev_die_table_in_use) |
4439 | { | |
4440 | if (abbrev_die_table_in_use >= abbrev_die_table_allocated) | |
a3f97cbb | 4441 | { |
3f76745e JM |
4442 | n_alloc = abbrev_die_table_allocated + ABBREV_DIE_TABLE_INCREMENT; |
4443 | abbrev_die_table | |
c760091a | 4444 | = (dw_die_ref *) xrealloc (abbrev_die_table, |
966f5dff | 4445 | sizeof (dw_die_ref) * n_alloc); |
71dfc51f | 4446 | |
3f76745e JM |
4447 | bzero ((char *) &abbrev_die_table[abbrev_die_table_allocated], |
4448 | (n_alloc - abbrev_die_table_allocated) * sizeof (dw_die_ref)); | |
4449 | abbrev_die_table_allocated = n_alloc; | |
a3f97cbb | 4450 | } |
71dfc51f | 4451 | |
3f76745e JM |
4452 | ++abbrev_die_table_in_use; |
4453 | abbrev_die_table[abbrev_id] = die; | |
a3f97cbb | 4454 | } |
3f76745e JM |
4455 | |
4456 | die->die_abbrev = abbrev_id; | |
4457 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4458 | build_abbrev_table (c); | |
a3f97cbb | 4459 | } |
3f76745e | 4460 | \f |
243e7835 JW |
4461 | /* Return the size of a string, including the null byte. |
4462 | ||
4463 | This used to treat backslashes as escapes, and hence they were not included | |
4464 | in the count. However, that conflicts with what ASM_OUTPUT_ASCII does, | |
4465 | which treats a backslash as a backslash, escaping it if necessary, and hence | |
4466 | we must include them in the count. */ | |
a3f97cbb | 4467 | |
3f76745e JM |
4468 | static unsigned long |
4469 | size_of_string (str) | |
4470 | register char *str; | |
4471 | { | |
243e7835 | 4472 | return strlen (str) + 1; |
3f76745e JM |
4473 | } |
4474 | ||
4475 | /* Return the size of a location descriptor. */ | |
4476 | ||
4477 | static unsigned long | |
4478 | size_of_loc_descr (loc) | |
a3f97cbb JW |
4479 | register dw_loc_descr_ref loc; |
4480 | { | |
3f76745e | 4481 | register unsigned long size = 1; |
71dfc51f | 4482 | |
a3f97cbb JW |
4483 | switch (loc->dw_loc_opc) |
4484 | { | |
4485 | case DW_OP_addr: | |
3f76745e | 4486 | size += PTR_SIZE; |
a3f97cbb JW |
4487 | break; |
4488 | case DW_OP_const1u: | |
4489 | case DW_OP_const1s: | |
3f76745e | 4490 | size += 1; |
a3f97cbb JW |
4491 | break; |
4492 | case DW_OP_const2u: | |
4493 | case DW_OP_const2s: | |
3f76745e | 4494 | size += 2; |
a3f97cbb JW |
4495 | break; |
4496 | case DW_OP_const4u: | |
4497 | case DW_OP_const4s: | |
3f76745e | 4498 | size += 4; |
a3f97cbb JW |
4499 | break; |
4500 | case DW_OP_const8u: | |
4501 | case DW_OP_const8s: | |
3f76745e | 4502 | size += 8; |
a3f97cbb JW |
4503 | break; |
4504 | case DW_OP_constu: | |
3f76745e | 4505 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4506 | break; |
4507 | case DW_OP_consts: | |
3f76745e | 4508 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4509 | break; |
4510 | case DW_OP_pick: | |
3f76745e | 4511 | size += 1; |
a3f97cbb JW |
4512 | break; |
4513 | case DW_OP_plus_uconst: | |
3f76745e | 4514 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4515 | break; |
4516 | case DW_OP_skip: | |
4517 | case DW_OP_bra: | |
3f76745e | 4518 | size += 2; |
a3f97cbb JW |
4519 | break; |
4520 | case DW_OP_breg0: | |
4521 | case DW_OP_breg1: | |
4522 | case DW_OP_breg2: | |
4523 | case DW_OP_breg3: | |
4524 | case DW_OP_breg4: | |
4525 | case DW_OP_breg5: | |
4526 | case DW_OP_breg6: | |
4527 | case DW_OP_breg7: | |
4528 | case DW_OP_breg8: | |
4529 | case DW_OP_breg9: | |
4530 | case DW_OP_breg10: | |
4531 | case DW_OP_breg11: | |
4532 | case DW_OP_breg12: | |
4533 | case DW_OP_breg13: | |
4534 | case DW_OP_breg14: | |
4535 | case DW_OP_breg15: | |
4536 | case DW_OP_breg16: | |
4537 | case DW_OP_breg17: | |
4538 | case DW_OP_breg18: | |
4539 | case DW_OP_breg19: | |
4540 | case DW_OP_breg20: | |
4541 | case DW_OP_breg21: | |
4542 | case DW_OP_breg22: | |
4543 | case DW_OP_breg23: | |
4544 | case DW_OP_breg24: | |
4545 | case DW_OP_breg25: | |
4546 | case DW_OP_breg26: | |
4547 | case DW_OP_breg27: | |
4548 | case DW_OP_breg28: | |
4549 | case DW_OP_breg29: | |
4550 | case DW_OP_breg30: | |
4551 | case DW_OP_breg31: | |
3f76745e | 4552 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4553 | break; |
4554 | case DW_OP_regx: | |
3f76745e | 4555 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4556 | break; |
4557 | case DW_OP_fbreg: | |
3f76745e | 4558 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4559 | break; |
4560 | case DW_OP_bregx: | |
3f76745e JM |
4561 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
4562 | size += size_of_sleb128 (loc->dw_loc_oprnd2.v.val_int); | |
a3f97cbb JW |
4563 | break; |
4564 | case DW_OP_piece: | |
3f76745e | 4565 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4566 | break; |
4567 | case DW_OP_deref_size: | |
4568 | case DW_OP_xderef_size: | |
3f76745e | 4569 | size += 1; |
a3f97cbb JW |
4570 | break; |
4571 | default: | |
4572 | break; | |
4573 | } | |
3f76745e JM |
4574 | |
4575 | return size; | |
a3f97cbb JW |
4576 | } |
4577 | ||
3f76745e | 4578 | /* Return the size of a series of location descriptors. */ |
71dfc51f | 4579 | |
a3f97cbb | 4580 | static unsigned long |
3f76745e JM |
4581 | size_of_locs (loc) |
4582 | register dw_loc_descr_ref loc; | |
a3f97cbb | 4583 | { |
3f76745e | 4584 | register unsigned long size = 0; |
71dfc51f | 4585 | |
3f76745e JM |
4586 | for (; loc != NULL; loc = loc->dw_loc_next) |
4587 | size += size_of_loc_descr (loc); | |
4588 | ||
4589 | return size; | |
4590 | } | |
4591 | ||
4592 | /* Return the power-of-two number of bytes necessary to represent VALUE. */ | |
4593 | ||
4594 | static int | |
4595 | constant_size (value) | |
4596 | long unsigned value; | |
4597 | { | |
4598 | int log; | |
4599 | ||
4600 | if (value == 0) | |
4601 | log = 0; | |
a3f97cbb | 4602 | else |
3f76745e | 4603 | log = floor_log2 (value); |
71dfc51f | 4604 | |
3f76745e JM |
4605 | log = log / 8; |
4606 | log = 1 << (floor_log2 (log) + 1); | |
4607 | ||
4608 | return log; | |
a3f97cbb JW |
4609 | } |
4610 | ||
3f76745e JM |
4611 | /* Return the size of a DIE, as it is represented in the |
4612 | .debug_info section. */ | |
71dfc51f | 4613 | |
3f76745e JM |
4614 | static unsigned long |
4615 | size_of_die (die) | |
a3f97cbb JW |
4616 | register dw_die_ref die; |
4617 | { | |
3f76745e | 4618 | register unsigned long size = 0; |
a3f97cbb | 4619 | register dw_attr_ref a; |
71dfc51f | 4620 | |
3f76745e | 4621 | size += size_of_uleb128 (die->die_abbrev); |
a3f97cbb JW |
4622 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
4623 | { | |
4624 | switch (a->dw_attr_val.val_class) | |
4625 | { | |
4626 | case dw_val_class_addr: | |
3f76745e | 4627 | size += PTR_SIZE; |
a3f97cbb JW |
4628 | break; |
4629 | case dw_val_class_loc: | |
3f76745e JM |
4630 | { |
4631 | register unsigned long lsize | |
4632 | = size_of_locs (a->dw_attr_val.v.val_loc); | |
71dfc51f | 4633 | |
3f76745e JM |
4634 | /* Block length. */ |
4635 | size += constant_size (lsize); | |
4636 | size += lsize; | |
4637 | } | |
a3f97cbb JW |
4638 | break; |
4639 | case dw_val_class_const: | |
3f76745e | 4640 | size += 4; |
a3f97cbb JW |
4641 | break; |
4642 | case dw_val_class_unsigned_const: | |
3f76745e | 4643 | size += constant_size (a->dw_attr_val.v.val_unsigned); |
a3f97cbb | 4644 | break; |
469ac993 | 4645 | case dw_val_class_long_long: |
3f76745e | 4646 | size += 1 + 8; /* block */ |
469ac993 JM |
4647 | break; |
4648 | case dw_val_class_float: | |
3f76745e | 4649 | size += 1 + a->dw_attr_val.v.val_float.length * 4; /* block */ |
a3f97cbb JW |
4650 | break; |
4651 | case dw_val_class_flag: | |
3f76745e | 4652 | size += 1; |
a3f97cbb JW |
4653 | break; |
4654 | case dw_val_class_die_ref: | |
3f76745e | 4655 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
4656 | break; |
4657 | case dw_val_class_fde_ref: | |
3f76745e | 4658 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
4659 | break; |
4660 | case dw_val_class_lbl_id: | |
3f76745e JM |
4661 | size += PTR_SIZE; |
4662 | break; | |
4663 | case dw_val_class_section_offset: | |
4664 | size += DWARF_OFFSET_SIZE; | |
4665 | break; | |
4666 | case dw_val_class_str: | |
4667 | size += size_of_string (a->dw_attr_val.v.val_str); | |
4668 | break; | |
4669 | default: | |
4670 | abort (); | |
4671 | } | |
a3f97cbb | 4672 | } |
3f76745e JM |
4673 | |
4674 | return size; | |
a3f97cbb JW |
4675 | } |
4676 | ||
956d6950 | 4677 | /* Size the debugging information associated with a given DIE. |
3f76745e JM |
4678 | Visits the DIE's children recursively. Updates the global |
4679 | variable next_die_offset, on each time through. Uses the | |
956d6950 | 4680 | current value of next_die_offset to update the die_offset |
3f76745e | 4681 | field in each DIE. */ |
71dfc51f | 4682 | |
a3f97cbb | 4683 | static void |
3f76745e JM |
4684 | calc_die_sizes (die) |
4685 | dw_die_ref die; | |
a3f97cbb | 4686 | { |
3f76745e JM |
4687 | register dw_die_ref c; |
4688 | die->die_offset = next_die_offset; | |
4689 | next_die_offset += size_of_die (die); | |
71dfc51f | 4690 | |
3f76745e JM |
4691 | for (c = die->die_child; c != NULL; c = c->die_sib) |
4692 | calc_die_sizes (c); | |
71dfc51f | 4693 | |
3f76745e JM |
4694 | if (die->die_child != NULL) |
4695 | /* Count the null byte used to terminate sibling lists. */ | |
4696 | next_die_offset += 1; | |
a3f97cbb JW |
4697 | } |
4698 | ||
3f76745e JM |
4699 | /* Return the size of the line information prolog generated for the |
4700 | compilation unit. */ | |
469ac993 | 4701 | |
3f76745e JM |
4702 | static unsigned long |
4703 | size_of_line_prolog () | |
a94dbf2c | 4704 | { |
3f76745e JM |
4705 | register unsigned long size; |
4706 | register unsigned long ft_index; | |
a94dbf2c | 4707 | |
3f76745e | 4708 | size = DWARF_LINE_PROLOG_HEADER_SIZE; |
469ac993 | 4709 | |
3f76745e JM |
4710 | /* Count the size of the table giving number of args for each |
4711 | standard opcode. */ | |
4712 | size += DWARF_LINE_OPCODE_BASE - 1; | |
71dfc51f | 4713 | |
3f76745e | 4714 | /* Include directory table is empty (at present). Count only the |
38e01259 | 4715 | null byte used to terminate the table. */ |
3f76745e | 4716 | size += 1; |
71dfc51f | 4717 | |
3f76745e JM |
4718 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
4719 | { | |
4720 | /* File name entry. */ | |
4721 | size += size_of_string (file_table[ft_index]); | |
a94dbf2c | 4722 | |
3f76745e JM |
4723 | /* Include directory index. */ |
4724 | size += size_of_uleb128 (0); | |
a94dbf2c | 4725 | |
3f76745e JM |
4726 | /* Modification time. */ |
4727 | size += size_of_uleb128 (0); | |
71dfc51f | 4728 | |
3f76745e JM |
4729 | /* File length in bytes. */ |
4730 | size += size_of_uleb128 (0); | |
a94dbf2c | 4731 | } |
71dfc51f | 4732 | |
3f76745e JM |
4733 | /* Count the file table terminator. */ |
4734 | size += 1; | |
4735 | return size; | |
a94dbf2c JM |
4736 | } |
4737 | ||
3f76745e JM |
4738 | /* Return the size of the line information generated for this |
4739 | compilation unit. */ | |
71dfc51f | 4740 | |
3f76745e JM |
4741 | static unsigned long |
4742 | size_of_line_info () | |
a94dbf2c | 4743 | { |
3f76745e JM |
4744 | register unsigned long size; |
4745 | register unsigned long lt_index; | |
4746 | register unsigned long current_line; | |
4747 | register long line_offset; | |
4748 | register long line_delta; | |
4749 | register unsigned long current_file; | |
4750 | register unsigned long function; | |
f19a6894 JW |
4751 | unsigned long size_of_set_address; |
4752 | ||
4753 | /* Size of a DW_LNE_set_address instruction. */ | |
4754 | size_of_set_address = 1 + size_of_uleb128 (1 + PTR_SIZE) + 1 + PTR_SIZE; | |
a94dbf2c | 4755 | |
3f76745e JM |
4756 | /* Version number. */ |
4757 | size = 2; | |
71dfc51f | 4758 | |
3f76745e JM |
4759 | /* Prolog length specifier. */ |
4760 | size += DWARF_OFFSET_SIZE; | |
71dfc51f | 4761 | |
3f76745e JM |
4762 | /* Prolog. */ |
4763 | size += size_of_line_prolog (); | |
a94dbf2c | 4764 | |
3f76745e | 4765 | /* Set address register instruction. */ |
f19a6894 | 4766 | size += size_of_set_address; |
71dfc51f | 4767 | |
3f76745e JM |
4768 | current_file = 1; |
4769 | current_line = 1; | |
4770 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) | |
a94dbf2c | 4771 | { |
3f76745e JM |
4772 | register dw_line_info_ref line_info; |
4773 | ||
4774 | /* Advance pc instruction. */ | |
f19a6894 JW |
4775 | /* ??? See the DW_LNS_advance_pc comment in output_line_info. */ |
4776 | if (0) | |
4777 | size += 1 + 2; | |
4778 | else | |
4779 | size += size_of_set_address; | |
4780 | ||
3f76745e JM |
4781 | line_info = &line_info_table[lt_index]; |
4782 | if (line_info->dw_file_num != current_file) | |
4783 | { | |
4784 | /* Set file number instruction. */ | |
4785 | size += 1; | |
4786 | current_file = line_info->dw_file_num; | |
4787 | size += size_of_uleb128 (current_file); | |
4788 | } | |
4789 | ||
4790 | if (line_info->dw_line_num != current_line) | |
4791 | { | |
4792 | line_offset = line_info->dw_line_num - current_line; | |
4793 | line_delta = line_offset - DWARF_LINE_BASE; | |
4794 | current_line = line_info->dw_line_num; | |
4795 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
4796 | /* 1-byte special line number instruction. */ | |
4797 | size += 1; | |
4798 | else | |
4799 | { | |
4800 | /* Advance line instruction. */ | |
4801 | size += 1; | |
4802 | size += size_of_sleb128 (line_offset); | |
4803 | /* Generate line entry instruction. */ | |
4804 | size += 1; | |
4805 | } | |
4806 | } | |
a94dbf2c | 4807 | } |
a94dbf2c | 4808 | |
3f76745e | 4809 | /* Advance pc instruction. */ |
f19a6894 JW |
4810 | if (0) |
4811 | size += 1 + 2; | |
4812 | else | |
4813 | size += size_of_set_address; | |
a94dbf2c | 4814 | |
3f76745e JM |
4815 | /* End of line number info. marker. */ |
4816 | size += 1 + size_of_uleb128 (1) + 1; | |
a94dbf2c | 4817 | |
3f76745e JM |
4818 | function = 0; |
4819 | current_file = 1; | |
4820 | current_line = 1; | |
4821 | for (lt_index = 0; lt_index < separate_line_info_table_in_use; ) | |
4822 | { | |
4823 | register dw_separate_line_info_ref line_info | |
4824 | = &separate_line_info_table[lt_index]; | |
4825 | if (function != line_info->function) | |
4826 | { | |
4827 | function = line_info->function; | |
4828 | /* Set address register instruction. */ | |
f19a6894 | 4829 | size += size_of_set_address; |
3f76745e JM |
4830 | } |
4831 | else | |
f19a6894 JW |
4832 | { |
4833 | /* Advance pc instruction. */ | |
4834 | if (0) | |
4835 | size += 1 + 2; | |
4836 | else | |
4837 | size += size_of_set_address; | |
4838 | } | |
3f76745e JM |
4839 | |
4840 | if (line_info->dw_file_num != current_file) | |
4841 | { | |
4842 | /* Set file number instruction. */ | |
4843 | size += 1; | |
4844 | current_file = line_info->dw_file_num; | |
4845 | size += size_of_uleb128 (current_file); | |
4846 | } | |
4847 | ||
4848 | if (line_info->dw_line_num != current_line) | |
4849 | { | |
4850 | line_offset = line_info->dw_line_num - current_line; | |
4851 | line_delta = line_offset - DWARF_LINE_BASE; | |
4852 | current_line = line_info->dw_line_num; | |
4853 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
4854 | /* 1-byte special line number instruction. */ | |
4855 | size += 1; | |
4856 | else | |
4857 | { | |
4858 | /* Advance line instruction. */ | |
4859 | size += 1; | |
4860 | size += size_of_sleb128 (line_offset); | |
a94dbf2c | 4861 | |
3f76745e JM |
4862 | /* Generate line entry instruction. */ |
4863 | size += 1; | |
4864 | } | |
4865 | } | |
a94dbf2c | 4866 | |
3f76745e | 4867 | ++lt_index; |
a94dbf2c | 4868 | |
3f76745e JM |
4869 | /* If we're done with a function, end its sequence. */ |
4870 | if (lt_index == separate_line_info_table_in_use | |
4871 | || separate_line_info_table[lt_index].function != function) | |
4872 | { | |
4873 | current_file = 1; | |
4874 | current_line = 1; | |
71dfc51f | 4875 | |
3f76745e | 4876 | /* Advance pc instruction. */ |
f19a6894 JW |
4877 | if (0) |
4878 | size += 1 + 2; | |
4879 | else | |
4880 | size += size_of_set_address; | |
71dfc51f | 4881 | |
3f76745e JM |
4882 | /* End of line number info. marker. */ |
4883 | size += 1 + size_of_uleb128 (1) + 1; | |
4884 | } | |
a94dbf2c JM |
4885 | } |
4886 | ||
3f76745e | 4887 | return size; |
a94dbf2c JM |
4888 | } |
4889 | ||
3f76745e JM |
4890 | /* Return the size of the .debug_pubnames table generated for the |
4891 | compilation unit. */ | |
a94dbf2c | 4892 | |
3f76745e JM |
4893 | static unsigned long |
4894 | size_of_pubnames () | |
a94dbf2c | 4895 | { |
3f76745e JM |
4896 | register unsigned long size; |
4897 | register unsigned i; | |
469ac993 | 4898 | |
3f76745e JM |
4899 | size = DWARF_PUBNAMES_HEADER_SIZE; |
4900 | for (i = 0; i < pubname_table_in_use; ++i) | |
a94dbf2c | 4901 | { |
3f76745e JM |
4902 | register pubname_ref p = &pubname_table[i]; |
4903 | size += DWARF_OFFSET_SIZE + size_of_string (p->name); | |
a94dbf2c JM |
4904 | } |
4905 | ||
3f76745e JM |
4906 | size += DWARF_OFFSET_SIZE; |
4907 | return size; | |
a94dbf2c JM |
4908 | } |
4909 | ||
956d6950 | 4910 | /* Return the size of the information in the .debug_aranges section. */ |
469ac993 | 4911 | |
3f76745e JM |
4912 | static unsigned long |
4913 | size_of_aranges () | |
469ac993 | 4914 | { |
3f76745e | 4915 | register unsigned long size; |
469ac993 | 4916 | |
3f76745e | 4917 | size = DWARF_ARANGES_HEADER_SIZE; |
469ac993 | 4918 | |
3f76745e JM |
4919 | /* Count the address/length pair for this compilation unit. */ |
4920 | size += 2 * PTR_SIZE; | |
4921 | size += 2 * PTR_SIZE * arange_table_in_use; | |
469ac993 | 4922 | |
3f76745e JM |
4923 | /* Count the two zero words used to terminated the address range table. */ |
4924 | size += 2 * PTR_SIZE; | |
4925 | return size; | |
4926 | } | |
4927 | \f | |
4928 | /* Select the encoding of an attribute value. */ | |
4929 | ||
4930 | static enum dwarf_form | |
4931 | value_format (v) | |
4932 | dw_val_ref v; | |
4933 | { | |
4934 | switch (v->val_class) | |
469ac993 | 4935 | { |
3f76745e JM |
4936 | case dw_val_class_addr: |
4937 | return DW_FORM_addr; | |
4938 | case dw_val_class_loc: | |
4939 | switch (constant_size (size_of_locs (v->v.val_loc))) | |
469ac993 | 4940 | { |
3f76745e JM |
4941 | case 1: |
4942 | return DW_FORM_block1; | |
4943 | case 2: | |
4944 | return DW_FORM_block2; | |
469ac993 JM |
4945 | default: |
4946 | abort (); | |
4947 | } | |
3f76745e JM |
4948 | case dw_val_class_const: |
4949 | return DW_FORM_data4; | |
4950 | case dw_val_class_unsigned_const: | |
4951 | switch (constant_size (v->v.val_unsigned)) | |
4952 | { | |
4953 | case 1: | |
4954 | return DW_FORM_data1; | |
4955 | case 2: | |
4956 | return DW_FORM_data2; | |
4957 | case 4: | |
4958 | return DW_FORM_data4; | |
4959 | case 8: | |
4960 | return DW_FORM_data8; | |
4961 | default: | |
4962 | abort (); | |
4963 | } | |
4964 | case dw_val_class_long_long: | |
4965 | return DW_FORM_block1; | |
4966 | case dw_val_class_float: | |
4967 | return DW_FORM_block1; | |
4968 | case dw_val_class_flag: | |
4969 | return DW_FORM_flag; | |
4970 | case dw_val_class_die_ref: | |
4971 | return DW_FORM_ref; | |
4972 | case dw_val_class_fde_ref: | |
4973 | return DW_FORM_data; | |
4974 | case dw_val_class_lbl_id: | |
4975 | return DW_FORM_addr; | |
4976 | case dw_val_class_section_offset: | |
4977 | return DW_FORM_data; | |
4978 | case dw_val_class_str: | |
4979 | return DW_FORM_string; | |
469ac993 JM |
4980 | default: |
4981 | abort (); | |
4982 | } | |
a94dbf2c JM |
4983 | } |
4984 | ||
3f76745e | 4985 | /* Output the encoding of an attribute value. */ |
469ac993 | 4986 | |
3f76745e JM |
4987 | static void |
4988 | output_value_format (v) | |
4989 | dw_val_ref v; | |
a94dbf2c | 4990 | { |
3f76745e | 4991 | enum dwarf_form form = value_format (v); |
71dfc51f | 4992 | |
3f76745e | 4993 | output_uleb128 (form); |
c5cec899 | 4994 | if (flag_debug_asm) |
3f76745e | 4995 | fprintf (asm_out_file, " (%s)", dwarf_form_name (form)); |
141719a8 | 4996 | |
3f76745e JM |
4997 | fputc ('\n', asm_out_file); |
4998 | } | |
469ac993 | 4999 | |
3f76745e JM |
5000 | /* Output the .debug_abbrev section which defines the DIE abbreviation |
5001 | table. */ | |
469ac993 | 5002 | |
3f76745e JM |
5003 | static void |
5004 | output_abbrev_section () | |
5005 | { | |
5006 | unsigned long abbrev_id; | |
71dfc51f | 5007 | |
3f76745e JM |
5008 | dw_attr_ref a_attr; |
5009 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) | |
5010 | { | |
5011 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 5012 | |
3f76745e | 5013 | output_uleb128 (abbrev_id); |
c5cec899 | 5014 | if (flag_debug_asm) |
3f76745e | 5015 | fprintf (asm_out_file, " (abbrev code)"); |
469ac993 | 5016 | |
3f76745e JM |
5017 | fputc ('\n', asm_out_file); |
5018 | output_uleb128 (abbrev->die_tag); | |
c5cec899 | 5019 | if (flag_debug_asm) |
3f76745e JM |
5020 | fprintf (asm_out_file, " (TAG: %s)", |
5021 | dwarf_tag_name (abbrev->die_tag)); | |
71dfc51f | 5022 | |
3f76745e JM |
5023 | fputc ('\n', asm_out_file); |
5024 | fprintf (asm_out_file, "\t%s\t0x%x", ASM_BYTE_OP, | |
5025 | abbrev->die_child != NULL ? DW_children_yes : DW_children_no); | |
469ac993 | 5026 | |
c5cec899 | 5027 | if (flag_debug_asm) |
3f76745e JM |
5028 | fprintf (asm_out_file, "\t%s %s", |
5029 | ASM_COMMENT_START, | |
5030 | (abbrev->die_child != NULL | |
5031 | ? "DW_children_yes" : "DW_children_no")); | |
5032 | ||
5033 | fputc ('\n', asm_out_file); | |
5034 | ||
5035 | for (a_attr = abbrev->die_attr; a_attr != NULL; | |
5036 | a_attr = a_attr->dw_attr_next) | |
5037 | { | |
5038 | output_uleb128 (a_attr->dw_attr); | |
c5cec899 | 5039 | if (flag_debug_asm) |
3f76745e JM |
5040 | fprintf (asm_out_file, " (%s)", |
5041 | dwarf_attr_name (a_attr->dw_attr)); | |
5042 | ||
5043 | fputc ('\n', asm_out_file); | |
5044 | output_value_format (&a_attr->dw_attr_val); | |
469ac993 | 5045 | } |
469ac993 | 5046 | |
3f76745e | 5047 | fprintf (asm_out_file, "\t%s\t0,0\n", ASM_BYTE_OP); |
469ac993 | 5048 | } |
a94dbf2c JM |
5049 | } |
5050 | ||
3f76745e | 5051 | /* Output location description stack opcode's operands (if any). */ |
71dfc51f | 5052 | |
3f76745e JM |
5053 | static void |
5054 | output_loc_operands (loc) | |
5055 | register dw_loc_descr_ref loc; | |
a3f97cbb | 5056 | { |
3f76745e JM |
5057 | register dw_val_ref val1 = &loc->dw_loc_oprnd1; |
5058 | register dw_val_ref val2 = &loc->dw_loc_oprnd2; | |
71dfc51f | 5059 | |
3f76745e | 5060 | switch (loc->dw_loc_opc) |
a3f97cbb | 5061 | { |
3f76745e JM |
5062 | case DW_OP_addr: |
5063 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, val1->v.val_addr); | |
5064 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5065 | break; |
3f76745e JM |
5066 | case DW_OP_const1u: |
5067 | case DW_OP_const1s: | |
5068 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
5069 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5070 | break; |
3f76745e JM |
5071 | case DW_OP_const2u: |
5072 | case DW_OP_const2s: | |
5073 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
5074 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5075 | break; |
3f76745e JM |
5076 | case DW_OP_const4u: |
5077 | case DW_OP_const4s: | |
5078 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, val1->v.val_int); | |
5079 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5080 | break; |
3f76745e JM |
5081 | case DW_OP_const8u: |
5082 | case DW_OP_const8s: | |
5083 | abort (); | |
5084 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5085 | break; |
3f76745e JM |
5086 | case DW_OP_constu: |
5087 | output_uleb128 (val1->v.val_unsigned); | |
5088 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5089 | break; |
3f76745e JM |
5090 | case DW_OP_consts: |
5091 | output_sleb128 (val1->v.val_int); | |
5092 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5093 | break; |
3f76745e JM |
5094 | case DW_OP_pick: |
5095 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_int); | |
5096 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5097 | break; |
3f76745e JM |
5098 | case DW_OP_plus_uconst: |
5099 | output_uleb128 (val1->v.val_unsigned); | |
5100 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5101 | break; |
3f76745e JM |
5102 | case DW_OP_skip: |
5103 | case DW_OP_bra: | |
5104 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
5105 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5106 | break; |
3f76745e JM |
5107 | case DW_OP_breg0: |
5108 | case DW_OP_breg1: | |
5109 | case DW_OP_breg2: | |
5110 | case DW_OP_breg3: | |
5111 | case DW_OP_breg4: | |
5112 | case DW_OP_breg5: | |
5113 | case DW_OP_breg6: | |
5114 | case DW_OP_breg7: | |
5115 | case DW_OP_breg8: | |
5116 | case DW_OP_breg9: | |
5117 | case DW_OP_breg10: | |
5118 | case DW_OP_breg11: | |
5119 | case DW_OP_breg12: | |
5120 | case DW_OP_breg13: | |
5121 | case DW_OP_breg14: | |
5122 | case DW_OP_breg15: | |
5123 | case DW_OP_breg16: | |
5124 | case DW_OP_breg17: | |
5125 | case DW_OP_breg18: | |
5126 | case DW_OP_breg19: | |
5127 | case DW_OP_breg20: | |
5128 | case DW_OP_breg21: | |
5129 | case DW_OP_breg22: | |
5130 | case DW_OP_breg23: | |
5131 | case DW_OP_breg24: | |
5132 | case DW_OP_breg25: | |
5133 | case DW_OP_breg26: | |
5134 | case DW_OP_breg27: | |
5135 | case DW_OP_breg28: | |
5136 | case DW_OP_breg29: | |
5137 | case DW_OP_breg30: | |
5138 | case DW_OP_breg31: | |
5139 | output_sleb128 (val1->v.val_int); | |
5140 | fputc ('\n', asm_out_file); | |
5141 | break; | |
5142 | case DW_OP_regx: | |
5143 | output_uleb128 (val1->v.val_unsigned); | |
5144 | fputc ('\n', asm_out_file); | |
5145 | break; | |
5146 | case DW_OP_fbreg: | |
5147 | output_sleb128 (val1->v.val_int); | |
5148 | fputc ('\n', asm_out_file); | |
5149 | break; | |
5150 | case DW_OP_bregx: | |
5151 | output_uleb128 (val1->v.val_unsigned); | |
5152 | fputc ('\n', asm_out_file); | |
5153 | output_sleb128 (val2->v.val_int); | |
5154 | fputc ('\n', asm_out_file); | |
5155 | break; | |
5156 | case DW_OP_piece: | |
5157 | output_uleb128 (val1->v.val_unsigned); | |
5158 | fputc ('\n', asm_out_file); | |
5159 | break; | |
5160 | case DW_OP_deref_size: | |
5161 | case DW_OP_xderef_size: | |
5162 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
5163 | fputc ('\n', asm_out_file); | |
a3f97cbb JW |
5164 | break; |
5165 | default: | |
5166 | break; | |
5167 | } | |
a3f97cbb JW |
5168 | } |
5169 | ||
3f76745e | 5170 | /* Compute the offset of a sibling. */ |
71dfc51f | 5171 | |
3f76745e JM |
5172 | static unsigned long |
5173 | sibling_offset (die) | |
5174 | dw_die_ref die; | |
a3f97cbb | 5175 | { |
3f76745e | 5176 | unsigned long offset; |
71dfc51f | 5177 | |
3f76745e JM |
5178 | if (die->die_child_last == NULL) |
5179 | offset = die->die_offset + size_of_die (die); | |
5180 | else | |
5181 | offset = sibling_offset (die->die_child_last) + 1; | |
71dfc51f | 5182 | |
3f76745e | 5183 | return offset; |
a3f97cbb JW |
5184 | } |
5185 | ||
3f76745e JM |
5186 | /* Output the DIE and its attributes. Called recursively to generate |
5187 | the definitions of each child DIE. */ | |
71dfc51f | 5188 | |
a3f97cbb | 5189 | static void |
3f76745e JM |
5190 | output_die (die) |
5191 | register dw_die_ref die; | |
a3f97cbb | 5192 | { |
3f76745e JM |
5193 | register dw_attr_ref a; |
5194 | register dw_die_ref c; | |
5195 | register unsigned long ref_offset; | |
5196 | register unsigned long size; | |
5197 | register dw_loc_descr_ref loc; | |
5198 | register int i; | |
a94dbf2c | 5199 | |
3f76745e | 5200 | output_uleb128 (die->die_abbrev); |
c5cec899 | 5201 | if (flag_debug_asm) |
2d8b0f3a | 5202 | fprintf (asm_out_file, " (DIE (0x%lx) %s)", |
3f76745e | 5203 | die->die_offset, dwarf_tag_name (die->die_tag)); |
a94dbf2c | 5204 | |
3f76745e | 5205 | fputc ('\n', asm_out_file); |
a94dbf2c | 5206 | |
3f76745e | 5207 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
a3f97cbb | 5208 | { |
3f76745e JM |
5209 | switch (a->dw_attr_val.val_class) |
5210 | { | |
5211 | case dw_val_class_addr: | |
5212 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, | |
5213 | a->dw_attr_val.v.val_addr); | |
5214 | break; | |
a3f97cbb | 5215 | |
3f76745e JM |
5216 | case dw_val_class_loc: |
5217 | size = size_of_locs (a->dw_attr_val.v.val_loc); | |
71dfc51f | 5218 | |
3f76745e JM |
5219 | /* Output the block length for this list of location operations. */ |
5220 | switch (constant_size (size)) | |
5221 | { | |
5222 | case 1: | |
5223 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, size); | |
5224 | break; | |
5225 | case 2: | |
5226 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, size); | |
5227 | break; | |
5228 | default: | |
5229 | abort (); | |
5230 | } | |
71dfc51f | 5231 | |
c5cec899 | 5232 | if (flag_debug_asm) |
3f76745e JM |
5233 | fprintf (asm_out_file, "\t%s %s", |
5234 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
71dfc51f | 5235 | |
3f76745e JM |
5236 | fputc ('\n', asm_out_file); |
5237 | for (loc = a->dw_attr_val.v.val_loc; loc != NULL; | |
5238 | loc = loc->dw_loc_next) | |
5239 | { | |
5240 | /* Output the opcode. */ | |
5241 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, loc->dw_loc_opc); | |
c5cec899 | 5242 | if (flag_debug_asm) |
3f76745e JM |
5243 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
5244 | dwarf_stack_op_name (loc->dw_loc_opc)); | |
71dfc51f | 5245 | |
3f76745e | 5246 | fputc ('\n', asm_out_file); |
71dfc51f | 5247 | |
3f76745e JM |
5248 | /* Output the operand(s) (if any). */ |
5249 | output_loc_operands (loc); | |
5250 | } | |
a3f97cbb | 5251 | break; |
3f76745e JM |
5252 | |
5253 | case dw_val_class_const: | |
5254 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, a->dw_attr_val.v.val_int); | |
a3f97cbb | 5255 | break; |
3f76745e JM |
5256 | |
5257 | case dw_val_class_unsigned_const: | |
5258 | switch (constant_size (a->dw_attr_val.v.val_unsigned)) | |
5259 | { | |
5260 | case 1: | |
5261 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5262 | a->dw_attr_val.v.val_unsigned); | |
5263 | break; | |
5264 | case 2: | |
5265 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, | |
5266 | a->dw_attr_val.v.val_unsigned); | |
5267 | break; | |
5268 | case 4: | |
5269 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, | |
5270 | a->dw_attr_val.v.val_unsigned); | |
5271 | break; | |
5272 | case 8: | |
5273 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
5274 | a->dw_attr_val.v.val_long_long.hi, | |
5275 | a->dw_attr_val.v.val_long_long.low); | |
5276 | break; | |
5277 | default: | |
5278 | abort (); | |
5279 | } | |
a3f97cbb | 5280 | break; |
3f76745e JM |
5281 | |
5282 | case dw_val_class_long_long: | |
5283 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 8); | |
c5cec899 | 5284 | if (flag_debug_asm) |
3f76745e JM |
5285 | fprintf (asm_out_file, "\t%s %s", |
5286 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5287 | ||
5288 | fputc ('\n', asm_out_file); | |
5289 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
5290 | a->dw_attr_val.v.val_long_long.hi, | |
5291 | a->dw_attr_val.v.val_long_long.low); | |
5292 | ||
c5cec899 | 5293 | if (flag_debug_asm) |
3f76745e JM |
5294 | fprintf (asm_out_file, |
5295 | "\t%s long long constant", ASM_COMMENT_START); | |
5296 | ||
5297 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5298 | break; |
3f76745e JM |
5299 | |
5300 | case dw_val_class_float: | |
5301 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5302 | a->dw_attr_val.v.val_float.length * 4); | |
c5cec899 | 5303 | if (flag_debug_asm) |
3f76745e JM |
5304 | fprintf (asm_out_file, "\t%s %s", |
5305 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5306 | ||
5307 | fputc ('\n', asm_out_file); | |
5308 | for (i = 0; i < a->dw_attr_val.v.val_float.length; ++i) | |
5309 | { | |
5310 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, | |
5311 | a->dw_attr_val.v.val_float.array[i]); | |
c5cec899 | 5312 | if (flag_debug_asm) |
3f76745e JM |
5313 | fprintf (asm_out_file, "\t%s fp constant word %d", |
5314 | ASM_COMMENT_START, i); | |
5315 | ||
5316 | fputc ('\n', asm_out_file); | |
5317 | } | |
a3f97cbb | 5318 | break; |
3f76745e JM |
5319 | |
5320 | case dw_val_class_flag: | |
5321 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, a->dw_attr_val.v.val_flag); | |
a3f97cbb | 5322 | break; |
3f76745e JM |
5323 | |
5324 | case dw_val_class_die_ref: | |
5325 | if (a->dw_attr_val.v.val_die_ref != NULL) | |
5326 | ref_offset = a->dw_attr_val.v.val_die_ref->die_offset; | |
5327 | else if (a->dw_attr == DW_AT_sibling) | |
5328 | ref_offset = sibling_offset(die); | |
5329 | else | |
5330 | abort (); | |
5331 | ||
5332 | ASM_OUTPUT_DWARF_DATA (asm_out_file, ref_offset); | |
a3f97cbb | 5333 | break; |
3f76745e JM |
5334 | |
5335 | case dw_val_class_fde_ref: | |
a6ab3aad JM |
5336 | { |
5337 | char l1[20]; | |
5338 | ASM_GENERATE_INTERNAL_LABEL | |
5339 | (l1, FDE_AFTER_SIZE_LABEL, a->dw_attr_val.v.val_fde_index * 2); | |
5340 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, l1); | |
5341 | fprintf (asm_out_file, " - %d", DWARF_OFFSET_SIZE); | |
5342 | } | |
a3f97cbb | 5343 | break; |
a3f97cbb | 5344 | |
3f76745e JM |
5345 | case dw_val_class_lbl_id: |
5346 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, a->dw_attr_val.v.val_lbl_id); | |
5347 | break; | |
71dfc51f | 5348 | |
3f76745e JM |
5349 | case dw_val_class_section_offset: |
5350 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, | |
1553e85a JL |
5351 | stripattributes |
5352 | (a->dw_attr_val.v.val_section)); | |
3f76745e | 5353 | break; |
a3f97cbb | 5354 | |
3f76745e | 5355 | case dw_val_class_str: |
8d4e65a6 JL |
5356 | if (flag_debug_asm) |
5357 | ASM_OUTPUT_DWARF_STRING (asm_out_file, a->dw_attr_val.v.val_str); | |
5358 | else | |
5359 | ASM_OUTPUT_ASCII (asm_out_file, | |
5360 | a->dw_attr_val.v.val_str, | |
c2c85462 | 5361 | strlen (a->dw_attr_val.v.val_str) + 1); |
3f76745e | 5362 | break; |
b2932ae5 | 5363 | |
3f76745e JM |
5364 | default: |
5365 | abort (); | |
5366 | } | |
a94dbf2c | 5367 | |
3f76745e JM |
5368 | if (a->dw_attr_val.val_class != dw_val_class_loc |
5369 | && a->dw_attr_val.val_class != dw_val_class_long_long | |
5370 | && a->dw_attr_val.val_class != dw_val_class_float) | |
5371 | { | |
c5cec899 | 5372 | if (flag_debug_asm) |
3f76745e JM |
5373 | fprintf (asm_out_file, "\t%s %s", |
5374 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
b2932ae5 | 5375 | |
3f76745e JM |
5376 | fputc ('\n', asm_out_file); |
5377 | } | |
5378 | } | |
71dfc51f | 5379 | |
3f76745e JM |
5380 | for (c = die->die_child; c != NULL; c = c->die_sib) |
5381 | output_die (c); | |
71dfc51f | 5382 | |
3f76745e | 5383 | if (die->die_child != NULL) |
7e23cb16 | 5384 | { |
3f76745e JM |
5385 | /* Add null byte to terminate sibling list. */ |
5386 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5387 | if (flag_debug_asm) |
2d8b0f3a | 5388 | fprintf (asm_out_file, "\t%s end of children of DIE 0x%lx", |
3f76745e JM |
5389 | ASM_COMMENT_START, die->die_offset); |
5390 | ||
7e23cb16 JM |
5391 | fputc ('\n', asm_out_file); |
5392 | } | |
3f76745e | 5393 | } |
71dfc51f | 5394 | |
3f76745e JM |
5395 | /* Output the compilation unit that appears at the beginning of the |
5396 | .debug_info section, and precedes the DIE descriptions. */ | |
71dfc51f | 5397 | |
3f76745e JM |
5398 | static void |
5399 | output_compilation_unit_header () | |
5400 | { | |
5401 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset - DWARF_OFFSET_SIZE); | |
c5cec899 | 5402 | if (flag_debug_asm) |
3f76745e JM |
5403 | fprintf (asm_out_file, "\t%s Length of Compilation Unit Info.", |
5404 | ASM_COMMENT_START); | |
71dfc51f | 5405 | |
a3f97cbb | 5406 | fputc ('\n', asm_out_file); |
3f76745e | 5407 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
c5cec899 | 5408 | if (flag_debug_asm) |
3f76745e | 5409 | fprintf (asm_out_file, "\t%s DWARF version number", ASM_COMMENT_START); |
71dfc51f | 5410 | |
a3f97cbb | 5411 | fputc ('\n', asm_out_file); |
1553e85a | 5412 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (ABBREV_SECTION)); |
c5cec899 | 5413 | if (flag_debug_asm) |
3f76745e JM |
5414 | fprintf (asm_out_file, "\t%s Offset Into Abbrev. Section", |
5415 | ASM_COMMENT_START); | |
71dfc51f | 5416 | |
a3f97cbb | 5417 | fputc ('\n', asm_out_file); |
3f76745e | 5418 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); |
c5cec899 | 5419 | if (flag_debug_asm) |
3f76745e | 5420 | fprintf (asm_out_file, "\t%s Pointer Size (in bytes)", ASM_COMMENT_START); |
71dfc51f | 5421 | |
a3f97cbb | 5422 | fputc ('\n', asm_out_file); |
a3f97cbb JW |
5423 | } |
5424 | ||
a1d7ffe3 JM |
5425 | /* The DWARF2 pubname for a nested thingy looks like "A::f". The output |
5426 | of decl_printable_name for C++ looks like "A::f(int)". Let's drop the | |
5427 | argument list, and maybe the scope. */ | |
5428 | ||
71dfc51f | 5429 | static char * |
a1d7ffe3 JM |
5430 | dwarf2_name (decl, scope) |
5431 | tree decl; | |
5432 | int scope; | |
5433 | { | |
5434 | return (*decl_printable_name) (decl, scope ? 1 : 0); | |
5435 | } | |
5436 | ||
d291dd49 | 5437 | /* Add a new entry to .debug_pubnames if appropriate. */ |
71dfc51f | 5438 | |
d291dd49 JM |
5439 | static void |
5440 | add_pubname (decl, die) | |
5441 | tree decl; | |
5442 | dw_die_ref die; | |
5443 | { | |
5444 | pubname_ref p; | |
5445 | ||
5446 | if (! TREE_PUBLIC (decl)) | |
5447 | return; | |
5448 | ||
5449 | if (pubname_table_in_use == pubname_table_allocated) | |
5450 | { | |
5451 | pubname_table_allocated += PUBNAME_TABLE_INCREMENT; | |
5452 | pubname_table = (pubname_ref) xrealloc | |
5453 | (pubname_table, pubname_table_allocated * sizeof (pubname_entry)); | |
5454 | } | |
71dfc51f | 5455 | |
d291dd49 JM |
5456 | p = &pubname_table[pubname_table_in_use++]; |
5457 | p->die = die; | |
a1d7ffe3 JM |
5458 | |
5459 | p->name = xstrdup (dwarf2_name (decl, 1)); | |
d291dd49 JM |
5460 | } |
5461 | ||
a3f97cbb JW |
5462 | /* Output the public names table used to speed up access to externally |
5463 | visible names. For now, only generate entries for externally | |
5464 | visible procedures. */ | |
71dfc51f | 5465 | |
a3f97cbb JW |
5466 | static void |
5467 | output_pubnames () | |
5468 | { | |
d291dd49 | 5469 | register unsigned i; |
71dfc51f RK |
5470 | register unsigned long pubnames_length = size_of_pubnames (); |
5471 | ||
5472 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pubnames_length); | |
5473 | ||
c5cec899 | 5474 | if (flag_debug_asm) |
71dfc51f RK |
5475 | fprintf (asm_out_file, "\t%s Length of Public Names Info.", |
5476 | ASM_COMMENT_START); | |
5477 | ||
a3f97cbb JW |
5478 | fputc ('\n', asm_out_file); |
5479 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
71dfc51f | 5480 | |
c5cec899 | 5481 | if (flag_debug_asm) |
71dfc51f RK |
5482 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5483 | ||
a3f97cbb | 5484 | fputc ('\n', asm_out_file); |
1553e85a | 5485 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (DEBUG_INFO_SECTION)); |
c5cec899 | 5486 | if (flag_debug_asm) |
71dfc51f RK |
5487 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
5488 | ASM_COMMENT_START); | |
5489 | ||
a3f97cbb | 5490 | fputc ('\n', asm_out_file); |
7e23cb16 | 5491 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset); |
c5cec899 | 5492 | if (flag_debug_asm) |
71dfc51f RK |
5493 | fprintf (asm_out_file, "\t%s Compilation Unit Length", ASM_COMMENT_START); |
5494 | ||
a3f97cbb | 5495 | fputc ('\n', asm_out_file); |
d291dd49 | 5496 | for (i = 0; i < pubname_table_in_use; ++i) |
a3f97cbb | 5497 | { |
d291dd49 | 5498 | register pubname_ref pub = &pubname_table[i]; |
71dfc51f | 5499 | |
7e23cb16 | 5500 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pub->die->die_offset); |
c5cec899 | 5501 | if (flag_debug_asm) |
71dfc51f RK |
5502 | fprintf (asm_out_file, "\t%s DIE offset", ASM_COMMENT_START); |
5503 | ||
d291dd49 JM |
5504 | fputc ('\n', asm_out_file); |
5505 | ||
c5cec899 | 5506 | if (flag_debug_asm) |
8d4e65a6 JL |
5507 | { |
5508 | ASM_OUTPUT_DWARF_STRING (asm_out_file, pub->name); | |
5509 | fprintf (asm_out_file, "%s external name", ASM_COMMENT_START); | |
5510 | } | |
5511 | else | |
5512 | { | |
c2c85462 | 5513 | ASM_OUTPUT_ASCII (asm_out_file, pub->name, strlen (pub->name) + 1); |
8d4e65a6 | 5514 | } |
71dfc51f | 5515 | |
d291dd49 | 5516 | fputc ('\n', asm_out_file); |
a3f97cbb | 5517 | } |
71dfc51f | 5518 | |
7e23cb16 | 5519 | ASM_OUTPUT_DWARF_DATA (asm_out_file, 0); |
a3f97cbb JW |
5520 | fputc ('\n', asm_out_file); |
5521 | } | |
5522 | ||
d291dd49 | 5523 | /* Add a new entry to .debug_aranges if appropriate. */ |
71dfc51f | 5524 | |
d291dd49 JM |
5525 | static void |
5526 | add_arange (decl, die) | |
5527 | tree decl; | |
5528 | dw_die_ref die; | |
5529 | { | |
5530 | if (! DECL_SECTION_NAME (decl)) | |
5531 | return; | |
5532 | ||
5533 | if (arange_table_in_use == arange_table_allocated) | |
5534 | { | |
5535 | arange_table_allocated += ARANGE_TABLE_INCREMENT; | |
71dfc51f RK |
5536 | arange_table |
5537 | = (arange_ref) xrealloc (arange_table, | |
5538 | arange_table_allocated * sizeof (dw_die_ref)); | |
d291dd49 | 5539 | } |
71dfc51f | 5540 | |
d291dd49 JM |
5541 | arange_table[arange_table_in_use++] = die; |
5542 | } | |
5543 | ||
a3f97cbb JW |
5544 | /* Output the information that goes into the .debug_aranges table. |
5545 | Namely, define the beginning and ending address range of the | |
5546 | text section generated for this compilation unit. */ | |
71dfc51f | 5547 | |
a3f97cbb JW |
5548 | static void |
5549 | output_aranges () | |
5550 | { | |
d291dd49 | 5551 | register unsigned i; |
71dfc51f RK |
5552 | register unsigned long aranges_length = size_of_aranges (); |
5553 | ||
5554 | ASM_OUTPUT_DWARF_DATA (asm_out_file, aranges_length); | |
c5cec899 | 5555 | if (flag_debug_asm) |
71dfc51f RK |
5556 | fprintf (asm_out_file, "\t%s Length of Address Ranges Info.", |
5557 | ASM_COMMENT_START); | |
5558 | ||
a3f97cbb JW |
5559 | fputc ('\n', asm_out_file); |
5560 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
c5cec899 | 5561 | if (flag_debug_asm) |
71dfc51f RK |
5562 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5563 | ||
a3f97cbb | 5564 | fputc ('\n', asm_out_file); |
1553e85a | 5565 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (DEBUG_INFO_SECTION)); |
c5cec899 | 5566 | if (flag_debug_asm) |
71dfc51f RK |
5567 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
5568 | ASM_COMMENT_START); | |
5569 | ||
a3f97cbb JW |
5570 | fputc ('\n', asm_out_file); |
5571 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); | |
c5cec899 | 5572 | if (flag_debug_asm) |
71dfc51f RK |
5573 | fprintf (asm_out_file, "\t%s Size of Address", ASM_COMMENT_START); |
5574 | ||
a3f97cbb JW |
5575 | fputc ('\n', asm_out_file); |
5576 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5577 | if (flag_debug_asm) |
71dfc51f RK |
5578 | fprintf (asm_out_file, "\t%s Size of Segment Descriptor", |
5579 | ASM_COMMENT_START); | |
5580 | ||
a3f97cbb JW |
5581 | fputc ('\n', asm_out_file); |
5582 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 4); | |
7e23cb16 JM |
5583 | if (PTR_SIZE == 8) |
5584 | fprintf (asm_out_file, ",0,0"); | |
71dfc51f | 5585 | |
c5cec899 | 5586 | if (flag_debug_asm) |
71dfc51f RK |
5587 | fprintf (asm_out_file, "\t%s Pad to %d byte boundary", |
5588 | ASM_COMMENT_START, 2 * PTR_SIZE); | |
5589 | ||
a3f97cbb | 5590 | fputc ('\n', asm_out_file); |
49bcd085 | 5591 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, stripattributes (TEXT_SECTION)); |
c5cec899 | 5592 | if (flag_debug_asm) |
71dfc51f RK |
5593 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
5594 | ||
a3f97cbb | 5595 | fputc ('\n', asm_out_file); |
71208e03 JW |
5596 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, text_end_label, |
5597 | stripattributes (TEXT_SECTION)); | |
c5cec899 | 5598 | if (flag_debug_asm) |
71dfc51f RK |
5599 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
5600 | ||
a3f97cbb | 5601 | fputc ('\n', asm_out_file); |
d291dd49 JM |
5602 | for (i = 0; i < arange_table_in_use; ++i) |
5603 | { | |
5604 | dw_die_ref a = arange_table[i]; | |
71dfc51f | 5605 | |
d291dd49 JM |
5606 | if (a->die_tag == DW_TAG_subprogram) |
5607 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, get_AT_low_pc (a)); | |
5608 | else | |
a1d7ffe3 JM |
5609 | { |
5610 | char *name = get_AT_string (a, DW_AT_MIPS_linkage_name); | |
5611 | if (! name) | |
5612 | name = get_AT_string (a, DW_AT_name); | |
71dfc51f | 5613 | |
a1d7ffe3 JM |
5614 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, name); |
5615 | } | |
71dfc51f | 5616 | |
c5cec899 | 5617 | if (flag_debug_asm) |
71dfc51f RK |
5618 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
5619 | ||
d291dd49 JM |
5620 | fputc ('\n', asm_out_file); |
5621 | if (a->die_tag == DW_TAG_subprogram) | |
7e23cb16 JM |
5622 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, get_AT_hi_pc (a), |
5623 | get_AT_low_pc (a)); | |
d291dd49 | 5624 | else |
7e23cb16 JM |
5625 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, |
5626 | get_AT_unsigned (a, DW_AT_byte_size)); | |
71dfc51f | 5627 | |
c5cec899 | 5628 | if (flag_debug_asm) |
71dfc51f RK |
5629 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
5630 | ||
d291dd49 JM |
5631 | fputc ('\n', asm_out_file); |
5632 | } | |
71dfc51f | 5633 | |
a3f97cbb | 5634 | /* Output the terminator words. */ |
7e23cb16 | 5635 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb | 5636 | fputc ('\n', asm_out_file); |
7e23cb16 | 5637 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb JW |
5638 | fputc ('\n', asm_out_file); |
5639 | } | |
5640 | ||
5641 | /* Output the source line number correspondence information. This | |
f19a6894 JW |
5642 | information goes into the .debug_line section. |
5643 | ||
5644 | If the format of this data changes, then the function size_of_line_info | |
5645 | must also be adjusted the same way. */ | |
71dfc51f | 5646 | |
a3f97cbb JW |
5647 | static void |
5648 | output_line_info () | |
5649 | { | |
a3f97cbb JW |
5650 | char line_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
5651 | char prev_line_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
5652 | register unsigned opc; | |
5653 | register unsigned n_op_args; | |
a3f97cbb JW |
5654 | register unsigned long ft_index; |
5655 | register unsigned long lt_index; | |
5656 | register unsigned long current_line; | |
5657 | register long line_offset; | |
5658 | register long line_delta; | |
5659 | register unsigned long current_file; | |
e90b62db | 5660 | register unsigned long function; |
71dfc51f | 5661 | |
7e23cb16 | 5662 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_info ()); |
c5cec899 | 5663 | if (flag_debug_asm) |
71dfc51f RK |
5664 | fprintf (asm_out_file, "\t%s Length of Source Line Info.", |
5665 | ASM_COMMENT_START); | |
5666 | ||
a3f97cbb JW |
5667 | fputc ('\n', asm_out_file); |
5668 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
c5cec899 | 5669 | if (flag_debug_asm) |
71dfc51f RK |
5670 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5671 | ||
a3f97cbb | 5672 | fputc ('\n', asm_out_file); |
7e23cb16 | 5673 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_prolog ()); |
c5cec899 | 5674 | if (flag_debug_asm) |
71dfc51f RK |
5675 | fprintf (asm_out_file, "\t%s Prolog Length", ASM_COMMENT_START); |
5676 | ||
a3f97cbb JW |
5677 | fputc ('\n', asm_out_file); |
5678 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_MIN_INSTR_LENGTH); | |
c5cec899 | 5679 | if (flag_debug_asm) |
71dfc51f RK |
5680 | fprintf (asm_out_file, "\t%s Minimum Instruction Length", |
5681 | ASM_COMMENT_START); | |
5682 | ||
a3f97cbb JW |
5683 | fputc ('\n', asm_out_file); |
5684 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_DEFAULT_IS_STMT_START); | |
c5cec899 | 5685 | if (flag_debug_asm) |
71dfc51f RK |
5686 | fprintf (asm_out_file, "\t%s Default is_stmt_start flag", |
5687 | ASM_COMMENT_START); | |
5688 | ||
a3f97cbb JW |
5689 | fputc ('\n', asm_out_file); |
5690 | fprintf (asm_out_file, "\t%s\t%d", ASM_BYTE_OP, DWARF_LINE_BASE); | |
c5cec899 | 5691 | if (flag_debug_asm) |
71dfc51f RK |
5692 | fprintf (asm_out_file, "\t%s Line Base Value (Special Opcodes)", |
5693 | ASM_COMMENT_START); | |
5694 | ||
a3f97cbb JW |
5695 | fputc ('\n', asm_out_file); |
5696 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_RANGE); | |
c5cec899 | 5697 | if (flag_debug_asm) |
71dfc51f RK |
5698 | fprintf (asm_out_file, "\t%s Line Range Value (Special Opcodes)", |
5699 | ASM_COMMENT_START); | |
5700 | ||
a3f97cbb JW |
5701 | fputc ('\n', asm_out_file); |
5702 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_OPCODE_BASE); | |
c5cec899 | 5703 | if (flag_debug_asm) |
71dfc51f RK |
5704 | fprintf (asm_out_file, "\t%s Special Opcode Base", ASM_COMMENT_START); |
5705 | ||
a3f97cbb JW |
5706 | fputc ('\n', asm_out_file); |
5707 | for (opc = 1; opc < DWARF_LINE_OPCODE_BASE; ++opc) | |
5708 | { | |
5709 | switch (opc) | |
5710 | { | |
5711 | case DW_LNS_advance_pc: | |
5712 | case DW_LNS_advance_line: | |
5713 | case DW_LNS_set_file: | |
5714 | case DW_LNS_set_column: | |
5715 | case DW_LNS_fixed_advance_pc: | |
5716 | n_op_args = 1; | |
5717 | break; | |
5718 | default: | |
5719 | n_op_args = 0; | |
5720 | break; | |
5721 | } | |
5722 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, n_op_args); | |
c5cec899 | 5723 | if (flag_debug_asm) |
71dfc51f RK |
5724 | fprintf (asm_out_file, "\t%s opcode: 0x%x has %d args", |
5725 | ASM_COMMENT_START, opc, n_op_args); | |
a3f97cbb JW |
5726 | fputc ('\n', asm_out_file); |
5727 | } | |
71dfc51f | 5728 | |
c5cec899 | 5729 | if (flag_debug_asm) |
71dfc51f RK |
5730 | fprintf (asm_out_file, "%s Include Directory Table\n", ASM_COMMENT_START); |
5731 | ||
a3f97cbb JW |
5732 | /* Include directory table is empty, at present */ |
5733 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
5734 | fputc ('\n', asm_out_file); | |
c5cec899 | 5735 | if (flag_debug_asm) |
71dfc51f RK |
5736 | fprintf (asm_out_file, "%s File Name Table\n", ASM_COMMENT_START); |
5737 | ||
a3f97cbb JW |
5738 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
5739 | { | |
c5cec899 | 5740 | if (flag_debug_asm) |
8d4e65a6 JL |
5741 | { |
5742 | ASM_OUTPUT_DWARF_STRING (asm_out_file, file_table[ft_index]); | |
2d8b0f3a | 5743 | fprintf (asm_out_file, "%s File Entry: 0x%lx", |
8d4e65a6 JL |
5744 | ASM_COMMENT_START, ft_index); |
5745 | } | |
5746 | else | |
5747 | { | |
5748 | ASM_OUTPUT_ASCII (asm_out_file, | |
5749 | file_table[ft_index], | |
c2c85462 | 5750 | strlen (file_table[ft_index]) + 1); |
8d4e65a6 | 5751 | } |
71dfc51f | 5752 | |
a3f97cbb | 5753 | fputc ('\n', asm_out_file); |
71dfc51f | 5754 | |
a3f97cbb JW |
5755 | /* Include directory index */ |
5756 | output_uleb128 (0); | |
5757 | fputc ('\n', asm_out_file); | |
71dfc51f | 5758 | |
a3f97cbb JW |
5759 | /* Modification time */ |
5760 | output_uleb128 (0); | |
5761 | fputc ('\n', asm_out_file); | |
71dfc51f | 5762 | |
a3f97cbb JW |
5763 | /* File length in bytes */ |
5764 | output_uleb128 (0); | |
5765 | fputc ('\n', asm_out_file); | |
5766 | } | |
71dfc51f | 5767 | |
a3f97cbb JW |
5768 | /* Terminate the file name table */ |
5769 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
5770 | fputc ('\n', asm_out_file); | |
5771 | ||
5772 | /* Set the address register to the first location in the text section */ | |
5773 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5774 | if (flag_debug_asm) |
71dfc51f RK |
5775 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); |
5776 | ||
a3f97cbb JW |
5777 | fputc ('\n', asm_out_file); |
5778 | output_uleb128 (1 + PTR_SIZE); | |
5779 | fputc ('\n', asm_out_file); | |
5780 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5781 | fputc ('\n', asm_out_file); | |
49bcd085 | 5782 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, stripattributes (TEXT_SECTION)); |
a3f97cbb JW |
5783 | fputc ('\n', asm_out_file); |
5784 | ||
5785 | /* Generate the line number to PC correspondence table, encoded as | |
5786 | a series of state machine operations. */ | |
5787 | current_file = 1; | |
5788 | current_line = 1; | |
49bcd085 | 5789 | strcpy (prev_line_label, stripattributes (TEXT_SECTION)); |
a3f97cbb JW |
5790 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) |
5791 | { | |
e90b62db | 5792 | register dw_line_info_ref line_info; |
71dfc51f | 5793 | |
f19a6894 JW |
5794 | /* Emit debug info for the address of the current line, choosing |
5795 | the encoding that uses the least amount of space. */ | |
5796 | /* ??? Unfortunately, we have little choice here currently, and must | |
5797 | always use the most general form. Gcc does not know the address | |
5798 | delta itself, so we can't use DW_LNS_advance_pc. There are no known | |
5799 | dwarf2 aware assemblers at this time, so we can't use any special | |
5800 | pseudo ops that would allow the assembler to optimally encode this for | |
5801 | us. Many ports do have length attributes which will give an upper | |
5802 | bound on the address range. We could perhaps use length attributes | |
5803 | to determine when it is safe to use DW_LNS_fixed_advance_pc. */ | |
5c90448c | 5804 | ASM_GENERATE_INTERNAL_LABEL (line_label, LINE_CODE_LABEL, lt_index); |
f19a6894 JW |
5805 | if (0) |
5806 | { | |
5807 | /* This can handle deltas up to 0xffff. This takes 3 bytes. */ | |
5808 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5809 | if (flag_debug_asm) |
f19a6894 JW |
5810 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5811 | ASM_COMMENT_START); | |
5812 | ||
5813 | fputc ('\n', asm_out_file); | |
5814 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, prev_line_label); | |
5815 | fputc ('\n', asm_out_file); | |
5816 | } | |
5817 | else | |
5818 | { | |
5819 | /* This can handle any delta. This takes 4+PTR_SIZE bytes. */ | |
5820 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5821 | if (flag_debug_asm) |
f19a6894 JW |
5822 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5823 | ASM_COMMENT_START); | |
5824 | fputc ('\n', asm_out_file); | |
5825 | output_uleb128 (1 + PTR_SIZE); | |
5826 | fputc ('\n', asm_out_file); | |
5827 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5828 | fputc ('\n', asm_out_file); | |
5829 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5830 | fputc ('\n', asm_out_file); | |
5831 | } | |
5832 | strcpy (prev_line_label, line_label); | |
5833 | ||
5834 | /* Emit debug info for the source file of the current line, if | |
5835 | different from the previous line. */ | |
a3f97cbb JW |
5836 | line_info = &line_info_table[lt_index]; |
5837 | if (line_info->dw_file_num != current_file) | |
5838 | { | |
5839 | current_file = line_info->dw_file_num; | |
5840 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 5841 | if (flag_debug_asm) |
71dfc51f RK |
5842 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
5843 | ||
a3f97cbb JW |
5844 | fputc ('\n', asm_out_file); |
5845 | output_uleb128 (current_file); | |
c5cec899 | 5846 | if (flag_debug_asm) |
b2932ae5 | 5847 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 5848 | |
a3f97cbb JW |
5849 | fputc ('\n', asm_out_file); |
5850 | } | |
71dfc51f | 5851 | |
f19a6894 JW |
5852 | /* Emit debug info for the current line number, choosing the encoding |
5853 | that uses the least amount of space. */ | |
a94dbf2c JM |
5854 | line_offset = line_info->dw_line_num - current_line; |
5855 | line_delta = line_offset - DWARF_LINE_BASE; | |
5856 | current_line = line_info->dw_line_num; | |
5857 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
a3f97cbb | 5858 | { |
f19a6894 JW |
5859 | /* This can handle deltas from -10 to 234, using the current |
5860 | definitions of DWARF_LINE_BASE and DWARF_LINE_RANGE. This | |
5861 | takes 1 byte. */ | |
a94dbf2c JM |
5862 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, |
5863 | DWARF_LINE_OPCODE_BASE + line_delta); | |
c5cec899 | 5864 | if (flag_debug_asm) |
a94dbf2c | 5865 | fprintf (asm_out_file, |
2d8b0f3a | 5866 | "\t%s line %ld", ASM_COMMENT_START, current_line); |
71dfc51f | 5867 | |
a94dbf2c JM |
5868 | fputc ('\n', asm_out_file); |
5869 | } | |
5870 | else | |
5871 | { | |
f19a6894 JW |
5872 | /* This can handle any delta. This takes at least 4 bytes, depending |
5873 | on the value being encoded. */ | |
a94dbf2c | 5874 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); |
c5cec899 | 5875 | if (flag_debug_asm) |
2d8b0f3a | 5876 | fprintf (asm_out_file, "\t%s advance to line %ld", |
71dfc51f RK |
5877 | ASM_COMMENT_START, current_line); |
5878 | ||
a94dbf2c JM |
5879 | fputc ('\n', asm_out_file); |
5880 | output_sleb128 (line_offset); | |
5881 | fputc ('\n', asm_out_file); | |
5882 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
5883 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5884 | } |
a3f97cbb JW |
5885 | } |
5886 | ||
f19a6894 JW |
5887 | /* Emit debug info for the address of the end of the function. */ |
5888 | if (0) | |
5889 | { | |
5890 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5891 | if (flag_debug_asm) |
f19a6894 JW |
5892 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5893 | ASM_COMMENT_START); | |
71dfc51f | 5894 | |
f19a6894 JW |
5895 | fputc ('\n', asm_out_file); |
5896 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, text_end_label, prev_line_label); | |
5897 | fputc ('\n', asm_out_file); | |
5898 | } | |
5899 | else | |
5900 | { | |
5901 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5902 | if (flag_debug_asm) |
f19a6894 JW |
5903 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); |
5904 | fputc ('\n', asm_out_file); | |
5905 | output_uleb128 (1 + PTR_SIZE); | |
5906 | fputc ('\n', asm_out_file); | |
5907 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5908 | fputc ('\n', asm_out_file); | |
5909 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_end_label); | |
5910 | fputc ('\n', asm_out_file); | |
5911 | } | |
bdb669cb | 5912 | |
a3f97cbb JW |
5913 | /* Output the marker for the end of the line number info. */ |
5914 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5915 | if (flag_debug_asm) |
71dfc51f RK |
5916 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", ASM_COMMENT_START); |
5917 | ||
a3f97cbb JW |
5918 | fputc ('\n', asm_out_file); |
5919 | output_uleb128 (1); | |
5920 | fputc ('\n', asm_out_file); | |
5921 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
5922 | fputc ('\n', asm_out_file); | |
e90b62db JM |
5923 | |
5924 | function = 0; | |
5925 | current_file = 1; | |
5926 | current_line = 1; | |
5927 | for (lt_index = 0; lt_index < separate_line_info_table_in_use; ) | |
5928 | { | |
5929 | register dw_separate_line_info_ref line_info | |
5930 | = &separate_line_info_table[lt_index]; | |
71dfc51f | 5931 | |
f19a6894 JW |
5932 | /* Emit debug info for the address of the current line. If this is |
5933 | a new function, or the first line of a function, then we need | |
5934 | to handle it differently. */ | |
5c90448c JM |
5935 | ASM_GENERATE_INTERNAL_LABEL (line_label, SEPARATE_LINE_CODE_LABEL, |
5936 | lt_index); | |
e90b62db JM |
5937 | if (function != line_info->function) |
5938 | { | |
5939 | function = line_info->function; | |
71dfc51f | 5940 | |
e90b62db JM |
5941 | /* Set the address register to the first line in the function */ |
5942 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5943 | if (flag_debug_asm) |
e90b62db JM |
5944 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5945 | ASM_COMMENT_START); | |
71dfc51f | 5946 | |
e90b62db JM |
5947 | fputc ('\n', asm_out_file); |
5948 | output_uleb128 (1 + PTR_SIZE); | |
5949 | fputc ('\n', asm_out_file); | |
5950 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5951 | fputc ('\n', asm_out_file); | |
5952 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5953 | fputc ('\n', asm_out_file); | |
5954 | } | |
5955 | else | |
5956 | { | |
f19a6894 JW |
5957 | /* ??? See the DW_LNS_advance_pc comment above. */ |
5958 | if (0) | |
5959 | { | |
5960 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5961 | if (flag_debug_asm) |
f19a6894 JW |
5962 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5963 | ASM_COMMENT_START); | |
71dfc51f | 5964 | |
f19a6894 JW |
5965 | fputc ('\n', asm_out_file); |
5966 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
5967 | prev_line_label); | |
5968 | fputc ('\n', asm_out_file); | |
5969 | } | |
5970 | else | |
5971 | { | |
5972 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5973 | if (flag_debug_asm) |
f19a6894 JW |
5974 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5975 | ASM_COMMENT_START); | |
5976 | fputc ('\n', asm_out_file); | |
5977 | output_uleb128 (1 + PTR_SIZE); | |
5978 | fputc ('\n', asm_out_file); | |
5979 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5980 | fputc ('\n', asm_out_file); | |
5981 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5982 | fputc ('\n', asm_out_file); | |
5983 | } | |
e90b62db | 5984 | } |
f19a6894 | 5985 | strcpy (prev_line_label, line_label); |
71dfc51f | 5986 | |
f19a6894 JW |
5987 | /* Emit debug info for the source file of the current line, if |
5988 | different from the previous line. */ | |
e90b62db JM |
5989 | if (line_info->dw_file_num != current_file) |
5990 | { | |
5991 | current_file = line_info->dw_file_num; | |
5992 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 5993 | if (flag_debug_asm) |
71dfc51f RK |
5994 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
5995 | ||
e90b62db JM |
5996 | fputc ('\n', asm_out_file); |
5997 | output_uleb128 (current_file); | |
c5cec899 | 5998 | if (flag_debug_asm) |
b2932ae5 | 5999 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 6000 | |
e90b62db JM |
6001 | fputc ('\n', asm_out_file); |
6002 | } | |
71dfc51f | 6003 | |
f19a6894 JW |
6004 | /* Emit debug info for the current line number, choosing the encoding |
6005 | that uses the least amount of space. */ | |
e90b62db JM |
6006 | if (line_info->dw_line_num != current_line) |
6007 | { | |
6008 | line_offset = line_info->dw_line_num - current_line; | |
6009 | line_delta = line_offset - DWARF_LINE_BASE; | |
6010 | current_line = line_info->dw_line_num; | |
6011 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
6012 | { | |
6013 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
6014 | DWARF_LINE_OPCODE_BASE + line_delta); | |
c5cec899 | 6015 | if (flag_debug_asm) |
71dfc51f | 6016 | fprintf (asm_out_file, |
2d8b0f3a | 6017 | "\t%s line %ld", ASM_COMMENT_START, current_line); |
71dfc51f | 6018 | |
e90b62db JM |
6019 | fputc ('\n', asm_out_file); |
6020 | } | |
6021 | else | |
6022 | { | |
6023 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
c5cec899 | 6024 | if (flag_debug_asm) |
2d8b0f3a | 6025 | fprintf (asm_out_file, "\t%s advance to line %ld", |
71dfc51f RK |
6026 | ASM_COMMENT_START, current_line); |
6027 | ||
e90b62db JM |
6028 | fputc ('\n', asm_out_file); |
6029 | output_sleb128 (line_offset); | |
6030 | fputc ('\n', asm_out_file); | |
6031 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
6032 | fputc ('\n', asm_out_file); | |
6033 | } | |
6034 | } | |
71dfc51f | 6035 | |
e90b62db | 6036 | ++lt_index; |
e90b62db JM |
6037 | |
6038 | /* If we're done with a function, end its sequence. */ | |
6039 | if (lt_index == separate_line_info_table_in_use | |
6040 | || separate_line_info_table[lt_index].function != function) | |
6041 | { | |
6042 | current_file = 1; | |
6043 | current_line = 1; | |
71dfc51f | 6044 | |
f19a6894 | 6045 | /* Emit debug info for the address of the end of the function. */ |
5c90448c | 6046 | ASM_GENERATE_INTERNAL_LABEL (line_label, FUNC_END_LABEL, function); |
f19a6894 JW |
6047 | if (0) |
6048 | { | |
6049 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 6050 | if (flag_debug_asm) |
f19a6894 JW |
6051 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
6052 | ASM_COMMENT_START); | |
6053 | ||
6054 | fputc ('\n', asm_out_file); | |
6055 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
6056 | prev_line_label); | |
6057 | fputc ('\n', asm_out_file); | |
6058 | } | |
6059 | else | |
6060 | { | |
6061 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 6062 | if (flag_debug_asm) |
f19a6894 JW |
6063 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
6064 | ASM_COMMENT_START); | |
6065 | fputc ('\n', asm_out_file); | |
6066 | output_uleb128 (1 + PTR_SIZE); | |
6067 | fputc ('\n', asm_out_file); | |
6068 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
6069 | fputc ('\n', asm_out_file); | |
6070 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
6071 | fputc ('\n', asm_out_file); | |
6072 | } | |
e90b62db JM |
6073 | |
6074 | /* Output the marker for the end of this sequence. */ | |
6075 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 6076 | if (flag_debug_asm) |
e90b62db JM |
6077 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", |
6078 | ASM_COMMENT_START); | |
71dfc51f | 6079 | |
e90b62db JM |
6080 | fputc ('\n', asm_out_file); |
6081 | output_uleb128 (1); | |
6082 | fputc ('\n', asm_out_file); | |
6083 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
6084 | fputc ('\n', asm_out_file); | |
6085 | } | |
6086 | } | |
a3f97cbb JW |
6087 | } |
6088 | \f | |
71dfc51f RK |
6089 | /* Given a pointer to a BLOCK node return non-zero if (and only if) the node |
6090 | in question represents the outermost pair of curly braces (i.e. the "body | |
6091 | block") of a function or method. | |
6092 | ||
6093 | For any BLOCK node representing a "body block" of a function or method, the | |
6094 | BLOCK_SUPERCONTEXT of the node will point to another BLOCK node which | |
6095 | represents the outermost (function) scope for the function or method (i.e. | |
6096 | the one which includes the formal parameters). The BLOCK_SUPERCONTEXT of | |
6097 | *that* node in turn will point to the relevant FUNCTION_DECL node. */ | |
6098 | ||
6099 | static inline int | |
a3f97cbb JW |
6100 | is_body_block (stmt) |
6101 | register tree stmt; | |
6102 | { | |
6103 | if (TREE_CODE (stmt) == BLOCK) | |
6104 | { | |
6105 | register tree parent = BLOCK_SUPERCONTEXT (stmt); | |
6106 | ||
6107 | if (TREE_CODE (parent) == BLOCK) | |
6108 | { | |
6109 | register tree grandparent = BLOCK_SUPERCONTEXT (parent); | |
6110 | ||
6111 | if (TREE_CODE (grandparent) == FUNCTION_DECL) | |
6112 | return 1; | |
6113 | } | |
6114 | } | |
71dfc51f | 6115 | |
a3f97cbb JW |
6116 | return 0; |
6117 | } | |
6118 | ||
a3f97cbb JW |
6119 | /* Given a pointer to a tree node for some base type, return a pointer to |
6120 | a DIE that describes the given type. | |
6121 | ||
6122 | This routine must only be called for GCC type nodes that correspond to | |
6123 | Dwarf base (fundamental) types. */ | |
71dfc51f | 6124 | |
a3f97cbb JW |
6125 | static dw_die_ref |
6126 | base_type_die (type) | |
6127 | register tree type; | |
6128 | { | |
a9d38797 JM |
6129 | register dw_die_ref base_type_result; |
6130 | register char *type_name; | |
6131 | register enum dwarf_type encoding; | |
71dfc51f | 6132 | register tree name = TYPE_NAME (type); |
a3f97cbb | 6133 | |
a9d38797 JM |
6134 | if (TREE_CODE (type) == ERROR_MARK |
6135 | || TREE_CODE (type) == VOID_TYPE) | |
a3f97cbb JW |
6136 | return 0; |
6137 | ||
71dfc51f RK |
6138 | if (TREE_CODE (name) == TYPE_DECL) |
6139 | name = DECL_NAME (name); | |
6140 | type_name = IDENTIFIER_POINTER (name); | |
a9d38797 | 6141 | |
a3f97cbb JW |
6142 | switch (TREE_CODE (type)) |
6143 | { | |
a3f97cbb | 6144 | case INTEGER_TYPE: |
a9d38797 | 6145 | /* Carefully distinguish the C character types, without messing |
a3f97cbb JW |
6146 | up if the language is not C. Note that we check only for the names |
6147 | that contain spaces; other names might occur by coincidence in other | |
6148 | languages. */ | |
a9d38797 JM |
6149 | if (! (TYPE_PRECISION (type) == CHAR_TYPE_SIZE |
6150 | && (type == char_type_node | |
6151 | || ! strcmp (type_name, "signed char") | |
6152 | || ! strcmp (type_name, "unsigned char")))) | |
a3f97cbb | 6153 | { |
a9d38797 JM |
6154 | if (TREE_UNSIGNED (type)) |
6155 | encoding = DW_ATE_unsigned; | |
6156 | else | |
6157 | encoding = DW_ATE_signed; | |
6158 | break; | |
a3f97cbb | 6159 | } |
a9d38797 | 6160 | /* else fall through */ |
a3f97cbb | 6161 | |
a9d38797 JM |
6162 | case CHAR_TYPE: |
6163 | /* GNU Pascal/Ada CHAR type. Not used in C. */ | |
6164 | if (TREE_UNSIGNED (type)) | |
6165 | encoding = DW_ATE_unsigned_char; | |
6166 | else | |
6167 | encoding = DW_ATE_signed_char; | |
a3f97cbb JW |
6168 | break; |
6169 | ||
6170 | case REAL_TYPE: | |
a9d38797 | 6171 | encoding = DW_ATE_float; |
a3f97cbb JW |
6172 | break; |
6173 | ||
6174 | case COMPLEX_TYPE: | |
a9d38797 | 6175 | encoding = DW_ATE_complex_float; |
a3f97cbb JW |
6176 | break; |
6177 | ||
6178 | case BOOLEAN_TYPE: | |
a9d38797 JM |
6179 | /* GNU FORTRAN/Ada/C++ BOOLEAN type. */ |
6180 | encoding = DW_ATE_boolean; | |
a3f97cbb JW |
6181 | break; |
6182 | ||
6183 | default: | |
a9d38797 | 6184 | abort (); /* No other TREE_CODEs are Dwarf fundamental types. */ |
a3f97cbb JW |
6185 | } |
6186 | ||
a9d38797 JM |
6187 | base_type_result = new_die (DW_TAG_base_type, comp_unit_die); |
6188 | add_AT_string (base_type_result, DW_AT_name, type_name); | |
6189 | add_AT_unsigned (base_type_result, DW_AT_byte_size, | |
4e5a8d7b | 6190 | int_size_in_bytes (type)); |
a9d38797 | 6191 | add_AT_unsigned (base_type_result, DW_AT_encoding, encoding); |
a3f97cbb JW |
6192 | |
6193 | return base_type_result; | |
6194 | } | |
6195 | ||
6196 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a pointer to | |
6197 | the Dwarf "root" type for the given input type. The Dwarf "root" type of | |
6198 | a given type is generally the same as the given type, except that if the | |
6199 | given type is a pointer or reference type, then the root type of the given | |
6200 | type is the root type of the "basis" type for the pointer or reference | |
6201 | type. (This definition of the "root" type is recursive.) Also, the root | |
6202 | type of a `const' qualified type or a `volatile' qualified type is the | |
6203 | root type of the given type without the qualifiers. */ | |
71dfc51f | 6204 | |
a3f97cbb JW |
6205 | static tree |
6206 | root_type (type) | |
6207 | register tree type; | |
6208 | { | |
6209 | if (TREE_CODE (type) == ERROR_MARK) | |
6210 | return error_mark_node; | |
6211 | ||
6212 | switch (TREE_CODE (type)) | |
6213 | { | |
6214 | case ERROR_MARK: | |
6215 | return error_mark_node; | |
6216 | ||
6217 | case POINTER_TYPE: | |
6218 | case REFERENCE_TYPE: | |
6219 | return type_main_variant (root_type (TREE_TYPE (type))); | |
6220 | ||
6221 | default: | |
6222 | return type_main_variant (type); | |
6223 | } | |
6224 | } | |
6225 | ||
6226 | /* Given a pointer to an arbitrary ..._TYPE tree node, return non-zero if the | |
6227 | given input type is a Dwarf "fundamental" type. Otherwise return null. */ | |
71dfc51f RK |
6228 | |
6229 | static inline int | |
a3f97cbb JW |
6230 | is_base_type (type) |
6231 | register tree type; | |
6232 | { | |
6233 | switch (TREE_CODE (type)) | |
6234 | { | |
6235 | case ERROR_MARK: | |
6236 | case VOID_TYPE: | |
6237 | case INTEGER_TYPE: | |
6238 | case REAL_TYPE: | |
6239 | case COMPLEX_TYPE: | |
6240 | case BOOLEAN_TYPE: | |
6241 | case CHAR_TYPE: | |
6242 | return 1; | |
6243 | ||
6244 | case SET_TYPE: | |
6245 | case ARRAY_TYPE: | |
6246 | case RECORD_TYPE: | |
6247 | case UNION_TYPE: | |
6248 | case QUAL_UNION_TYPE: | |
6249 | case ENUMERAL_TYPE: | |
6250 | case FUNCTION_TYPE: | |
6251 | case METHOD_TYPE: | |
6252 | case POINTER_TYPE: | |
6253 | case REFERENCE_TYPE: | |
6254 | case FILE_TYPE: | |
6255 | case OFFSET_TYPE: | |
6256 | case LANG_TYPE: | |
6257 | return 0; | |
6258 | ||
6259 | default: | |
6260 | abort (); | |
6261 | } | |
71dfc51f | 6262 | |
a3f97cbb JW |
6263 | return 0; |
6264 | } | |
6265 | ||
6266 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a debugging | |
6267 | entry that chains various modifiers in front of the given type. */ | |
71dfc51f | 6268 | |
a3f97cbb JW |
6269 | static dw_die_ref |
6270 | modified_type_die (type, is_const_type, is_volatile_type, context_die) | |
6271 | register tree type; | |
6272 | register int is_const_type; | |
6273 | register int is_volatile_type; | |
6274 | register dw_die_ref context_die; | |
6275 | { | |
6276 | register enum tree_code code = TREE_CODE (type); | |
6277 | register dw_die_ref mod_type_die = NULL; | |
6278 | register dw_die_ref sub_die = NULL; | |
dfcf9891 | 6279 | register tree item_type = NULL; |
a3f97cbb JW |
6280 | |
6281 | if (code != ERROR_MARK) | |
6282 | { | |
a94dbf2c | 6283 | type = build_type_variant (type, is_const_type, is_volatile_type); |
bdb669cb JM |
6284 | |
6285 | mod_type_die = lookup_type_die (type); | |
6286 | if (mod_type_die) | |
6287 | return mod_type_die; | |
6288 | ||
a94dbf2c JM |
6289 | /* Handle C typedef types. */ |
6290 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
6291 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
6292 | { | |
6293 | tree dtype = TREE_TYPE (TYPE_NAME (type)); | |
6294 | if (type == dtype) | |
6295 | { | |
6296 | /* For a named type, use the typedef. */ | |
6297 | gen_type_die (type, context_die); | |
6298 | mod_type_die = lookup_type_die (type); | |
6299 | } | |
71dfc51f | 6300 | |
a94dbf2c JM |
6301 | else if (is_const_type < TYPE_READONLY (dtype) |
6302 | || is_volatile_type < TYPE_VOLATILE (dtype)) | |
6303 | /* cv-unqualified version of named type. Just use the unnamed | |
6304 | type to which it refers. */ | |
71dfc51f RK |
6305 | mod_type_die |
6306 | = modified_type_die (DECL_ORIGINAL_TYPE (TYPE_NAME (type)), | |
6307 | is_const_type, is_volatile_type, | |
6308 | context_die); | |
6309 | /* Else cv-qualified version of named type; fall through. */ | |
a94dbf2c JM |
6310 | } |
6311 | ||
6312 | if (mod_type_die) | |
6313 | /* OK */; | |
6314 | else if (is_const_type) | |
a3f97cbb | 6315 | { |
ab72d377 | 6316 | mod_type_die = new_die (DW_TAG_const_type, comp_unit_die); |
a9d38797 | 6317 | sub_die = modified_type_die (type, 0, is_volatile_type, context_die); |
a3f97cbb JW |
6318 | } |
6319 | else if (is_volatile_type) | |
6320 | { | |
ab72d377 | 6321 | mod_type_die = new_die (DW_TAG_volatile_type, comp_unit_die); |
a9d38797 | 6322 | sub_die = modified_type_die (type, 0, 0, context_die); |
a3f97cbb JW |
6323 | } |
6324 | else if (code == POINTER_TYPE) | |
6325 | { | |
ab72d377 | 6326 | mod_type_die = new_die (DW_TAG_pointer_type, comp_unit_die); |
a3f97cbb | 6327 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 6328 | #if 0 |
a3f97cbb | 6329 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 6330 | #endif |
a3f97cbb | 6331 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
6332 | } |
6333 | else if (code == REFERENCE_TYPE) | |
6334 | { | |
ab72d377 | 6335 | mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die); |
a3f97cbb | 6336 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 6337 | #if 0 |
a3f97cbb | 6338 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 6339 | #endif |
a3f97cbb | 6340 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
6341 | } |
6342 | else if (is_base_type (type)) | |
71dfc51f | 6343 | mod_type_die = base_type_die (type); |
a3f97cbb JW |
6344 | else |
6345 | { | |
4b674448 JM |
6346 | gen_type_die (type, context_die); |
6347 | ||
a3f97cbb JW |
6348 | /* We have to get the type_main_variant here (and pass that to the |
6349 | `lookup_type_die' routine) because the ..._TYPE node we have | |
6350 | might simply be a *copy* of some original type node (where the | |
6351 | copy was created to help us keep track of typedef names) and | |
6352 | that copy might have a different TYPE_UID from the original | |
a94dbf2c | 6353 | ..._TYPE node. */ |
a3f97cbb | 6354 | mod_type_die = lookup_type_die (type_main_variant (type)); |
3a88cbd1 JL |
6355 | if (mod_type_die == NULL) |
6356 | abort (); | |
a3f97cbb JW |
6357 | } |
6358 | } | |
71dfc51f | 6359 | |
dfcf9891 JW |
6360 | equate_type_number_to_die (type, mod_type_die); |
6361 | if (item_type) | |
71dfc51f RK |
6362 | /* We must do this after the equate_type_number_to_die call, in case |
6363 | this is a recursive type. This ensures that the modified_type_die | |
6364 | recursion will terminate even if the type is recursive. Recursive | |
6365 | types are possible in Ada. */ | |
6366 | sub_die = modified_type_die (item_type, | |
6367 | TYPE_READONLY (item_type), | |
6368 | TYPE_VOLATILE (item_type), | |
6369 | context_die); | |
6370 | ||
a3f97cbb | 6371 | if (sub_die != NULL) |
71dfc51f RK |
6372 | add_AT_die_ref (mod_type_die, DW_AT_type, sub_die); |
6373 | ||
a3f97cbb JW |
6374 | return mod_type_die; |
6375 | } | |
6376 | ||
a3f97cbb JW |
6377 | /* Given a pointer to an arbitrary ..._TYPE tree node, return true if it is |
6378 | an enumerated type. */ | |
71dfc51f RK |
6379 | |
6380 | static inline int | |
a3f97cbb JW |
6381 | type_is_enum (type) |
6382 | register tree type; | |
6383 | { | |
6384 | return TREE_CODE (type) == ENUMERAL_TYPE; | |
6385 | } | |
6386 | ||
a3f97cbb | 6387 | /* Return a location descriptor that designates a machine register. */ |
71dfc51f | 6388 | |
a3f97cbb JW |
6389 | static dw_loc_descr_ref |
6390 | reg_loc_descriptor (rtl) | |
6391 | register rtx rtl; | |
6392 | { | |
6393 | register dw_loc_descr_ref loc_result = NULL; | |
6394 | register unsigned reg = reg_number (rtl); | |
71dfc51f | 6395 | |
85066503 | 6396 | if (reg <= 31) |
71dfc51f | 6397 | loc_result = new_loc_descr (DW_OP_reg0 + reg, 0, 0); |
a3f97cbb | 6398 | else |
71dfc51f RK |
6399 | loc_result = new_loc_descr (DW_OP_regx, reg, 0); |
6400 | ||
a3f97cbb JW |
6401 | return loc_result; |
6402 | } | |
6403 | ||
6404 | /* Return a location descriptor that designates a base+offset location. */ | |
71dfc51f | 6405 | |
a3f97cbb JW |
6406 | static dw_loc_descr_ref |
6407 | based_loc_descr (reg, offset) | |
6408 | unsigned reg; | |
6409 | long int offset; | |
6410 | { | |
6411 | register dw_loc_descr_ref loc_result; | |
810429b7 JM |
6412 | /* For the "frame base", we use the frame pointer or stack pointer |
6413 | registers, since the RTL for local variables is relative to one of | |
6414 | them. */ | |
6415 | register unsigned fp_reg = DBX_REGISTER_NUMBER (frame_pointer_needed | |
b1ccbc24 | 6416 | ? HARD_FRAME_POINTER_REGNUM |
810429b7 | 6417 | : STACK_POINTER_REGNUM); |
71dfc51f | 6418 | |
a3f97cbb | 6419 | if (reg == fp_reg) |
71dfc51f | 6420 | loc_result = new_loc_descr (DW_OP_fbreg, offset, 0); |
85066503 | 6421 | else if (reg <= 31) |
71dfc51f | 6422 | loc_result = new_loc_descr (DW_OP_breg0 + reg, offset, 0); |
a3f97cbb | 6423 | else |
71dfc51f RK |
6424 | loc_result = new_loc_descr (DW_OP_bregx, reg, offset); |
6425 | ||
a3f97cbb JW |
6426 | return loc_result; |
6427 | } | |
6428 | ||
6429 | /* Return true if this RTL expression describes a base+offset calculation. */ | |
71dfc51f RK |
6430 | |
6431 | static inline int | |
a3f97cbb JW |
6432 | is_based_loc (rtl) |
6433 | register rtx rtl; | |
6434 | { | |
71dfc51f RK |
6435 | return (GET_CODE (rtl) == PLUS |
6436 | && ((GET_CODE (XEXP (rtl, 0)) == REG | |
6437 | && GET_CODE (XEXP (rtl, 1)) == CONST_INT))); | |
a3f97cbb JW |
6438 | } |
6439 | ||
6440 | /* The following routine converts the RTL for a variable or parameter | |
6441 | (resident in memory) into an equivalent Dwarf representation of a | |
6442 | mechanism for getting the address of that same variable onto the top of a | |
6443 | hypothetical "address evaluation" stack. | |
71dfc51f | 6444 | |
a3f97cbb JW |
6445 | When creating memory location descriptors, we are effectively transforming |
6446 | the RTL for a memory-resident object into its Dwarf postfix expression | |
6447 | equivalent. This routine recursively descends an RTL tree, turning | |
6448 | it into Dwarf postfix code as it goes. */ | |
71dfc51f | 6449 | |
a3f97cbb JW |
6450 | static dw_loc_descr_ref |
6451 | mem_loc_descriptor (rtl) | |
6452 | register rtx rtl; | |
6453 | { | |
6454 | dw_loc_descr_ref mem_loc_result = NULL; | |
6455 | /* Note that for a dynamically sized array, the location we will generate a | |
6456 | description of here will be the lowest numbered location which is | |
6457 | actually within the array. That's *not* necessarily the same as the | |
6458 | zeroth element of the array. */ | |
71dfc51f | 6459 | |
a3f97cbb JW |
6460 | switch (GET_CODE (rtl)) |
6461 | { | |
6462 | case SUBREG: | |
6463 | /* The case of a subreg may arise when we have a local (register) | |
6464 | variable or a formal (register) parameter which doesn't quite fill | |
6465 | up an entire register. For now, just assume that it is | |
6466 | legitimate to make the Dwarf info refer to the whole register which | |
6467 | contains the given subreg. */ | |
6468 | rtl = XEXP (rtl, 0); | |
71dfc51f RK |
6469 | |
6470 | /* ... fall through ... */ | |
a3f97cbb JW |
6471 | |
6472 | case REG: | |
6473 | /* Whenever a register number forms a part of the description of the | |
6474 | method for calculating the (dynamic) address of a memory resident | |
6475 | object, DWARF rules require the register number be referred to as | |
6476 | a "base register". This distinction is not based in any way upon | |
6477 | what category of register the hardware believes the given register | |
6478 | belongs to. This is strictly DWARF terminology we're dealing with | |
6479 | here. Note that in cases where the location of a memory-resident | |
6480 | data object could be expressed as: OP_ADD (OP_BASEREG (basereg), | |
6481 | OP_CONST (0)) the actual DWARF location descriptor that we generate | |
6482 | may just be OP_BASEREG (basereg). This may look deceptively like | |
6483 | the object in question was allocated to a register (rather than in | |
6484 | memory) so DWARF consumers need to be aware of the subtle | |
6485 | distinction between OP_REG and OP_BASEREG. */ | |
6486 | mem_loc_result = based_loc_descr (reg_number (rtl), 0); | |
6487 | break; | |
6488 | ||
6489 | case MEM: | |
6490 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0)); | |
6491 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_deref, 0, 0)); | |
6492 | break; | |
6493 | ||
6494 | case CONST: | |
6495 | case SYMBOL_REF: | |
6496 | mem_loc_result = new_loc_descr (DW_OP_addr, 0, 0); | |
6497 | mem_loc_result->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
6498 | mem_loc_result->dw_loc_oprnd1.v.val_addr = addr_to_string (rtl); | |
6499 | break; | |
6500 | ||
6501 | case PLUS: | |
6502 | if (is_based_loc (rtl)) | |
71dfc51f RK |
6503 | mem_loc_result = based_loc_descr (reg_number (XEXP (rtl, 0)), |
6504 | INTVAL (XEXP (rtl, 1))); | |
a3f97cbb JW |
6505 | else |
6506 | { | |
6507 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0))); | |
6508 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1))); | |
6509 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_plus, 0, 0)); | |
6510 | } | |
6511 | break; | |
6512 | ||
dd2478ae JW |
6513 | case MULT: |
6514 | /* If a pseudo-reg is optimized away, it is possible for it to | |
6515 | be replaced with a MEM containing a multiply. */ | |
6516 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0))); | |
6517 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1))); | |
6518 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_mul, 0, 0)); | |
6519 | break; | |
6520 | ||
a3f97cbb JW |
6521 | case CONST_INT: |
6522 | mem_loc_result = new_loc_descr (DW_OP_constu, INTVAL (rtl), 0); | |
6523 | break; | |
6524 | ||
6525 | default: | |
6526 | abort (); | |
6527 | } | |
71dfc51f | 6528 | |
a3f97cbb JW |
6529 | return mem_loc_result; |
6530 | } | |
6531 | ||
956d6950 | 6532 | /* Return a descriptor that describes the concatenation of two locations. |
4401bf24 JL |
6533 | This is typically a complex variable. */ |
6534 | ||
6535 | static dw_loc_descr_ref | |
6536 | concat_loc_descriptor (x0, x1) | |
6537 | register rtx x0, x1; | |
6538 | { | |
6539 | dw_loc_descr_ref cc_loc_result = NULL; | |
6540 | ||
6541 | if (!is_pseudo_reg (x0) | |
6542 | && (GET_CODE (x0) != MEM || !is_pseudo_reg (XEXP (x0, 0)))) | |
6543 | add_loc_descr (&cc_loc_result, loc_descriptor (x0)); | |
6544 | add_loc_descr (&cc_loc_result, | |
6545 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x0)), 0)); | |
6546 | ||
6547 | if (!is_pseudo_reg (x1) | |
6548 | && (GET_CODE (x1) != MEM || !is_pseudo_reg (XEXP (x1, 0)))) | |
6549 | add_loc_descr (&cc_loc_result, loc_descriptor (x1)); | |
6550 | add_loc_descr (&cc_loc_result, | |
6551 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x1)), 0)); | |
6552 | ||
6553 | return cc_loc_result; | |
6554 | } | |
6555 | ||
a3f97cbb JW |
6556 | /* Output a proper Dwarf location descriptor for a variable or parameter |
6557 | which is either allocated in a register or in a memory location. For a | |
6558 | register, we just generate an OP_REG and the register number. For a | |
6559 | memory location we provide a Dwarf postfix expression describing how to | |
6560 | generate the (dynamic) address of the object onto the address stack. */ | |
71dfc51f | 6561 | |
a3f97cbb JW |
6562 | static dw_loc_descr_ref |
6563 | loc_descriptor (rtl) | |
6564 | register rtx rtl; | |
6565 | { | |
6566 | dw_loc_descr_ref loc_result = NULL; | |
6567 | switch (GET_CODE (rtl)) | |
6568 | { | |
6569 | case SUBREG: | |
a3f97cbb JW |
6570 | /* The case of a subreg may arise when we have a local (register) |
6571 | variable or a formal (register) parameter which doesn't quite fill | |
71dfc51f | 6572 | up an entire register. For now, just assume that it is |
a3f97cbb JW |
6573 | legitimate to make the Dwarf info refer to the whole register which |
6574 | contains the given subreg. */ | |
a3f97cbb | 6575 | rtl = XEXP (rtl, 0); |
71dfc51f RK |
6576 | |
6577 | /* ... fall through ... */ | |
a3f97cbb JW |
6578 | |
6579 | case REG: | |
5c90448c | 6580 | loc_result = reg_loc_descriptor (rtl); |
a3f97cbb JW |
6581 | break; |
6582 | ||
6583 | case MEM: | |
6584 | loc_result = mem_loc_descriptor (XEXP (rtl, 0)); | |
6585 | break; | |
6586 | ||
4401bf24 JL |
6587 | case CONCAT: |
6588 | loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1)); | |
6589 | break; | |
6590 | ||
a3f97cbb | 6591 | default: |
71dfc51f | 6592 | abort (); |
a3f97cbb | 6593 | } |
71dfc51f | 6594 | |
a3f97cbb JW |
6595 | return loc_result; |
6596 | } | |
6597 | ||
6598 | /* Given an unsigned value, round it up to the lowest multiple of `boundary' | |
6599 | which is not less than the value itself. */ | |
71dfc51f RK |
6600 | |
6601 | static inline unsigned | |
a3f97cbb JW |
6602 | ceiling (value, boundary) |
6603 | register unsigned value; | |
6604 | register unsigned boundary; | |
6605 | { | |
6606 | return (((value + boundary - 1) / boundary) * boundary); | |
6607 | } | |
6608 | ||
6609 | /* Given a pointer to what is assumed to be a FIELD_DECL node, return a | |
6610 | pointer to the declared type for the relevant field variable, or return | |
6611 | `integer_type_node' if the given node turns out to be an | |
6612 | ERROR_MARK node. */ | |
71dfc51f RK |
6613 | |
6614 | static inline tree | |
a3f97cbb JW |
6615 | field_type (decl) |
6616 | register tree decl; | |
6617 | { | |
6618 | register tree type; | |
6619 | ||
6620 | if (TREE_CODE (decl) == ERROR_MARK) | |
6621 | return integer_type_node; | |
6622 | ||
6623 | type = DECL_BIT_FIELD_TYPE (decl); | |
71dfc51f | 6624 | if (type == NULL_TREE) |
a3f97cbb JW |
6625 | type = TREE_TYPE (decl); |
6626 | ||
6627 | return type; | |
6628 | } | |
6629 | ||
6630 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
6631 | node, return the alignment in bits for the type, or else return | |
6632 | BITS_PER_WORD if the node actually turns out to be an | |
6633 | ERROR_MARK node. */ | |
71dfc51f RK |
6634 | |
6635 | static inline unsigned | |
a3f97cbb JW |
6636 | simple_type_align_in_bits (type) |
6637 | register tree type; | |
6638 | { | |
6639 | return (TREE_CODE (type) != ERROR_MARK) ? TYPE_ALIGN (type) : BITS_PER_WORD; | |
6640 | } | |
6641 | ||
6642 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
6643 | node, return the size in bits for the type if it is a constant, or else | |
6644 | return the alignment for the type if the type's size is not constant, or | |
6645 | else return BITS_PER_WORD if the type actually turns out to be an | |
6646 | ERROR_MARK node. */ | |
71dfc51f RK |
6647 | |
6648 | static inline unsigned | |
a3f97cbb JW |
6649 | simple_type_size_in_bits (type) |
6650 | register tree type; | |
6651 | { | |
6652 | if (TREE_CODE (type) == ERROR_MARK) | |
6653 | return BITS_PER_WORD; | |
6654 | else | |
6655 | { | |
6656 | register tree type_size_tree = TYPE_SIZE (type); | |
6657 | ||
6658 | if (TREE_CODE (type_size_tree) != INTEGER_CST) | |
6659 | return TYPE_ALIGN (type); | |
6660 | ||
6661 | return (unsigned) TREE_INT_CST_LOW (type_size_tree); | |
6662 | } | |
6663 | } | |
6664 | ||
6665 | /* Given a pointer to what is assumed to be a FIELD_DECL node, compute and | |
6666 | return the byte offset of the lowest addressed byte of the "containing | |
6667 | object" for the given FIELD_DECL, or return 0 if we are unable to | |
6668 | determine what that offset is, either because the argument turns out to | |
6669 | be a pointer to an ERROR_MARK node, or because the offset is actually | |
6670 | variable. (We can't handle the latter case just yet). */ | |
71dfc51f | 6671 | |
a3f97cbb JW |
6672 | static unsigned |
6673 | field_byte_offset (decl) | |
6674 | register tree decl; | |
6675 | { | |
6676 | register unsigned type_align_in_bytes; | |
6677 | register unsigned type_align_in_bits; | |
6678 | register unsigned type_size_in_bits; | |
6679 | register unsigned object_offset_in_align_units; | |
6680 | register unsigned object_offset_in_bits; | |
6681 | register unsigned object_offset_in_bytes; | |
6682 | register tree type; | |
6683 | register tree bitpos_tree; | |
6684 | register tree field_size_tree; | |
6685 | register unsigned bitpos_int; | |
6686 | register unsigned deepest_bitpos; | |
6687 | register unsigned field_size_in_bits; | |
6688 | ||
6689 | if (TREE_CODE (decl) == ERROR_MARK) | |
6690 | return 0; | |
6691 | ||
6692 | if (TREE_CODE (decl) != FIELD_DECL) | |
6693 | abort (); | |
6694 | ||
6695 | type = field_type (decl); | |
6696 | ||
6697 | bitpos_tree = DECL_FIELD_BITPOS (decl); | |
6698 | field_size_tree = DECL_SIZE (decl); | |
6699 | ||
6700 | /* We cannot yet cope with fields whose positions or sizes are variable, so | |
6701 | for now, when we see such things, we simply return 0. Someday, we may | |
6702 | be able to handle such cases, but it will be damn difficult. */ | |
6703 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
6704 | return 0; | |
6705 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); | |
6706 | ||
6707 | if (TREE_CODE (field_size_tree) != INTEGER_CST) | |
6708 | return 0; | |
a3f97cbb | 6709 | |
71dfc51f | 6710 | field_size_in_bits = (unsigned) TREE_INT_CST_LOW (field_size_tree); |
a3f97cbb | 6711 | type_size_in_bits = simple_type_size_in_bits (type); |
a3f97cbb JW |
6712 | type_align_in_bits = simple_type_align_in_bits (type); |
6713 | type_align_in_bytes = type_align_in_bits / BITS_PER_UNIT; | |
6714 | ||
6715 | /* Note that the GCC front-end doesn't make any attempt to keep track of | |
6716 | the starting bit offset (relative to the start of the containing | |
6717 | structure type) of the hypothetical "containing object" for a bit- | |
6718 | field. Thus, when computing the byte offset value for the start of the | |
6719 | "containing object" of a bit-field, we must deduce this information on | |
6720 | our own. This can be rather tricky to do in some cases. For example, | |
6721 | handling the following structure type definition when compiling for an | |
6722 | i386/i486 target (which only aligns long long's to 32-bit boundaries) | |
6723 | can be very tricky: | |
6724 | ||
6725 | struct S { int field1; long long field2:31; }; | |
6726 | ||
6727 | Fortunately, there is a simple rule-of-thumb which can be | |
6728 | used in such cases. When compiling for an i386/i486, GCC will allocate | |
6729 | 8 bytes for the structure shown above. It decides to do this based upon | |
6730 | one simple rule for bit-field allocation. Quite simply, GCC allocates | |
6731 | each "containing object" for each bit-field at the first (i.e. lowest | |
6732 | addressed) legitimate alignment boundary (based upon the required | |
6733 | minimum alignment for the declared type of the field) which it can | |
6734 | possibly use, subject to the condition that there is still enough | |
6735 | available space remaining in the containing object (when allocated at | |
6736 | the selected point) to fully accommodate all of the bits of the | |
6737 | bit-field itself. This simple rule makes it obvious why GCC allocates | |
6738 | 8 bytes for each object of the structure type shown above. When looking | |
6739 | for a place to allocate the "containing object" for `field2', the | |
6740 | compiler simply tries to allocate a 64-bit "containing object" at each | |
6741 | successive 32-bit boundary (starting at zero) until it finds a place to | |
6742 | allocate that 64- bit field such that at least 31 contiguous (and | |
6743 | previously unallocated) bits remain within that selected 64 bit field. | |
6744 | (As it turns out, for the example above, the compiler finds that it is | |
6745 | OK to allocate the "containing object" 64-bit field at bit-offset zero | |
6746 | within the structure type.) Here we attempt to work backwards from the | |
6747 | limited set of facts we're given, and we try to deduce from those facts, | |
6748 | where GCC must have believed that the containing object started (within | |
6749 | the structure type). The value we deduce is then used (by the callers of | |
6750 | this routine) to generate DW_AT_location and DW_AT_bit_offset attributes | |
6751 | for fields (both bit-fields and, in the case of DW_AT_location, regular | |
6752 | fields as well). */ | |
6753 | ||
6754 | /* Figure out the bit-distance from the start of the structure to the | |
6755 | "deepest" bit of the bit-field. */ | |
6756 | deepest_bitpos = bitpos_int + field_size_in_bits; | |
6757 | ||
6758 | /* This is the tricky part. Use some fancy footwork to deduce where the | |
6759 | lowest addressed bit of the containing object must be. */ | |
6760 | object_offset_in_bits | |
6761 | = ceiling (deepest_bitpos, type_align_in_bits) - type_size_in_bits; | |
6762 | ||
6763 | /* Compute the offset of the containing object in "alignment units". */ | |
6764 | object_offset_in_align_units = object_offset_in_bits / type_align_in_bits; | |
6765 | ||
6766 | /* Compute the offset of the containing object in bytes. */ | |
6767 | object_offset_in_bytes = object_offset_in_align_units * type_align_in_bytes; | |
6768 | ||
6769 | return object_offset_in_bytes; | |
6770 | } | |
a3f97cbb | 6771 | \f |
71dfc51f RK |
6772 | /* The following routines define various Dwarf attributes and any data |
6773 | associated with them. */ | |
a3f97cbb | 6774 | |
ef76d03b | 6775 | /* Add a location description attribute value to a DIE. |
a3f97cbb | 6776 | |
ef76d03b | 6777 | This emits location attributes suitable for whole variables and |
a3f97cbb JW |
6778 | whole parameters. Note that the location attributes for struct fields are |
6779 | generated by the routine `data_member_location_attribute' below. */ | |
71dfc51f | 6780 | |
a3f97cbb | 6781 | static void |
ef76d03b | 6782 | add_AT_location_description (die, attr_kind, rtl) |
a3f97cbb | 6783 | dw_die_ref die; |
ef76d03b | 6784 | enum dwarf_attribute attr_kind; |
a3f97cbb JW |
6785 | register rtx rtl; |
6786 | { | |
a3f97cbb JW |
6787 | /* Handle a special case. If we are about to output a location descriptor |
6788 | for a variable or parameter which has been optimized out of existence, | |
6a7a9f01 | 6789 | don't do that. A variable which has been optimized out |
a3f97cbb JW |
6790 | of existence will have a DECL_RTL value which denotes a pseudo-reg. |
6791 | Currently, in some rare cases, variables can have DECL_RTL values which | |
6792 | look like (MEM (REG pseudo-reg#)). These cases are due to bugs | |
6793 | elsewhere in the compiler. We treat such cases as if the variable(s) in | |
6a7a9f01 | 6794 | question had been optimized out of existence. */ |
a3f97cbb | 6795 | |
6a7a9f01 JM |
6796 | if (is_pseudo_reg (rtl) |
6797 | || (GET_CODE (rtl) == MEM | |
4401bf24 JL |
6798 | && is_pseudo_reg (XEXP (rtl, 0))) |
6799 | || (GET_CODE (rtl) == CONCAT | |
6800 | && is_pseudo_reg (XEXP (rtl, 0)) | |
6801 | && is_pseudo_reg (XEXP (rtl, 1)))) | |
6a7a9f01 | 6802 | return; |
a3f97cbb | 6803 | |
6a7a9f01 | 6804 | add_AT_loc (die, attr_kind, loc_descriptor (rtl)); |
a3f97cbb JW |
6805 | } |
6806 | ||
6807 | /* Attach the specialized form of location attribute used for data | |
6808 | members of struct and union types. In the special case of a | |
6809 | FIELD_DECL node which represents a bit-field, the "offset" part | |
6810 | of this special location descriptor must indicate the distance | |
6811 | in bytes from the lowest-addressed byte of the containing struct | |
6812 | or union type to the lowest-addressed byte of the "containing | |
6813 | object" for the bit-field. (See the `field_byte_offset' function | |
6814 | above).. For any given bit-field, the "containing object" is a | |
6815 | hypothetical object (of some integral or enum type) within which | |
6816 | the given bit-field lives. The type of this hypothetical | |
6817 | "containing object" is always the same as the declared type of | |
6818 | the individual bit-field itself (for GCC anyway... the DWARF | |
6819 | spec doesn't actually mandate this). Note that it is the size | |
6820 | (in bytes) of the hypothetical "containing object" which will | |
6821 | be given in the DW_AT_byte_size attribute for this bit-field. | |
6822 | (See the `byte_size_attribute' function below.) It is also used | |
6823 | when calculating the value of the DW_AT_bit_offset attribute. | |
6824 | (See the `bit_offset_attribute' function below). */ | |
71dfc51f | 6825 | |
a3f97cbb JW |
6826 | static void |
6827 | add_data_member_location_attribute (die, decl) | |
6828 | register dw_die_ref die; | |
6829 | register tree decl; | |
6830 | { | |
61b32c02 | 6831 | register unsigned long offset; |
a3f97cbb JW |
6832 | register dw_loc_descr_ref loc_descr; |
6833 | register enum dwarf_location_atom op; | |
6834 | ||
61b32c02 JM |
6835 | if (TREE_CODE (decl) == TREE_VEC) |
6836 | offset = TREE_INT_CST_LOW (BINFO_OFFSET (decl)); | |
6837 | else | |
6838 | offset = field_byte_offset (decl); | |
6839 | ||
a3f97cbb JW |
6840 | /* The DWARF2 standard says that we should assume that the structure address |
6841 | is already on the stack, so we can specify a structure field address | |
6842 | by using DW_OP_plus_uconst. */ | |
71dfc51f | 6843 | |
a3f97cbb JW |
6844 | #ifdef MIPS_DEBUGGING_INFO |
6845 | /* ??? The SGI dwarf reader does not handle the DW_OP_plus_uconst operator | |
6846 | correctly. It works only if we leave the offset on the stack. */ | |
6847 | op = DW_OP_constu; | |
6848 | #else | |
6849 | op = DW_OP_plus_uconst; | |
6850 | #endif | |
71dfc51f | 6851 | |
a3f97cbb JW |
6852 | loc_descr = new_loc_descr (op, offset, 0); |
6853 | add_AT_loc (die, DW_AT_data_member_location, loc_descr); | |
6854 | } | |
6855 | ||
6856 | /* Attach an DW_AT_const_value attribute for a variable or a parameter which | |
6857 | does not have a "location" either in memory or in a register. These | |
6858 | things can arise in GNU C when a constant is passed as an actual parameter | |
6859 | to an inlined function. They can also arise in C++ where declared | |
6860 | constants do not necessarily get memory "homes". */ | |
71dfc51f | 6861 | |
a3f97cbb JW |
6862 | static void |
6863 | add_const_value_attribute (die, rtl) | |
6864 | register dw_die_ref die; | |
6865 | register rtx rtl; | |
6866 | { | |
6867 | switch (GET_CODE (rtl)) | |
6868 | { | |
6869 | case CONST_INT: | |
6870 | /* Note that a CONST_INT rtx could represent either an integer or a | |
6871 | floating-point constant. A CONST_INT is used whenever the constant | |
6872 | will fit into a single word. In all such cases, the original mode | |
6873 | of the constant value is wiped out, and the CONST_INT rtx is | |
6874 | assigned VOIDmode. */ | |
6875 | add_AT_unsigned (die, DW_AT_const_value, (unsigned) INTVAL (rtl)); | |
6876 | break; | |
6877 | ||
6878 | case CONST_DOUBLE: | |
6879 | /* Note that a CONST_DOUBLE rtx could represent either an integer or a | |
6880 | floating-point constant. A CONST_DOUBLE is used whenever the | |
6881 | constant requires more than one word in order to be adequately | |
469ac993 JM |
6882 | represented. We output CONST_DOUBLEs as blocks. */ |
6883 | { | |
6884 | register enum machine_mode mode = GET_MODE (rtl); | |
6885 | ||
6886 | if (GET_MODE_CLASS (mode) == MODE_FLOAT) | |
6887 | { | |
71dfc51f RK |
6888 | register unsigned length = GET_MODE_SIZE (mode) / sizeof (long); |
6889 | long array[4]; | |
6890 | REAL_VALUE_TYPE rv; | |
469ac993 | 6891 | |
71dfc51f | 6892 | REAL_VALUE_FROM_CONST_DOUBLE (rv, rtl); |
469ac993 JM |
6893 | switch (mode) |
6894 | { | |
6895 | case SFmode: | |
71dfc51f | 6896 | REAL_VALUE_TO_TARGET_SINGLE (rv, array[0]); |
469ac993 JM |
6897 | break; |
6898 | ||
6899 | case DFmode: | |
71dfc51f | 6900 | REAL_VALUE_TO_TARGET_DOUBLE (rv, array); |
469ac993 JM |
6901 | break; |
6902 | ||
6903 | case XFmode: | |
6904 | case TFmode: | |
71dfc51f | 6905 | REAL_VALUE_TO_TARGET_LONG_DOUBLE (rv, array); |
469ac993 JM |
6906 | break; |
6907 | ||
6908 | default: | |
6909 | abort (); | |
6910 | } | |
6911 | ||
469ac993 JM |
6912 | add_AT_float (die, DW_AT_const_value, length, array); |
6913 | } | |
6914 | else | |
6915 | add_AT_long_long (die, DW_AT_const_value, | |
6916 | CONST_DOUBLE_HIGH (rtl), CONST_DOUBLE_LOW (rtl)); | |
6917 | } | |
a3f97cbb JW |
6918 | break; |
6919 | ||
6920 | case CONST_STRING: | |
6921 | add_AT_string (die, DW_AT_const_value, XSTR (rtl, 0)); | |
6922 | break; | |
6923 | ||
6924 | case SYMBOL_REF: | |
6925 | case LABEL_REF: | |
6926 | case CONST: | |
6927 | add_AT_addr (die, DW_AT_const_value, addr_to_string (rtl)); | |
6928 | break; | |
6929 | ||
6930 | case PLUS: | |
6931 | /* In cases where an inlined instance of an inline function is passed | |
6932 | the address of an `auto' variable (which is local to the caller) we | |
6933 | can get a situation where the DECL_RTL of the artificial local | |
6934 | variable (for the inlining) which acts as a stand-in for the | |
6935 | corresponding formal parameter (of the inline function) will look | |
6936 | like (plus:SI (reg:SI FRAME_PTR) (const_int ...)). This is not | |
6937 | exactly a compile-time constant expression, but it isn't the address | |
6938 | of the (artificial) local variable either. Rather, it represents the | |
6939 | *value* which the artificial local variable always has during its | |
6940 | lifetime. We currently have no way to represent such quasi-constant | |
6a7a9f01 | 6941 | values in Dwarf, so for now we just punt and generate nothing. */ |
a3f97cbb JW |
6942 | break; |
6943 | ||
6944 | default: | |
6945 | /* No other kinds of rtx should be possible here. */ | |
6946 | abort (); | |
6947 | } | |
6948 | ||
6949 | } | |
6950 | ||
6951 | /* Generate *either* an DW_AT_location attribute or else an DW_AT_const_value | |
6952 | data attribute for a variable or a parameter. We generate the | |
6953 | DW_AT_const_value attribute only in those cases where the given variable | |
6954 | or parameter does not have a true "location" either in memory or in a | |
6955 | register. This can happen (for example) when a constant is passed as an | |
6956 | actual argument in a call to an inline function. (It's possible that | |
6957 | these things can crop up in other ways also.) Note that one type of | |
6958 | constant value which can be passed into an inlined function is a constant | |
6959 | pointer. This can happen for example if an actual argument in an inlined | |
6960 | function call evaluates to a compile-time constant address. */ | |
71dfc51f | 6961 | |
a3f97cbb JW |
6962 | static void |
6963 | add_location_or_const_value_attribute (die, decl) | |
6964 | register dw_die_ref die; | |
6965 | register tree decl; | |
6966 | { | |
6967 | register rtx rtl; | |
6968 | register tree declared_type; | |
6969 | register tree passed_type; | |
6970 | ||
6971 | if (TREE_CODE (decl) == ERROR_MARK) | |
71dfc51f RK |
6972 | return; |
6973 | ||
6974 | if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL) | |
6975 | abort (); | |
6976 | ||
a3f97cbb JW |
6977 | /* Here we have to decide where we are going to say the parameter "lives" |
6978 | (as far as the debugger is concerned). We only have a couple of | |
6979 | choices. GCC provides us with DECL_RTL and with DECL_INCOMING_RTL. | |
71dfc51f | 6980 | |
a3f97cbb | 6981 | DECL_RTL normally indicates where the parameter lives during most of the |
71dfc51f | 6982 | activation of the function. If optimization is enabled however, this |
a3f97cbb JW |
6983 | could be either NULL or else a pseudo-reg. Both of those cases indicate |
6984 | that the parameter doesn't really live anywhere (as far as the code | |
6985 | generation parts of GCC are concerned) during most of the function's | |
6986 | activation. That will happen (for example) if the parameter is never | |
71dfc51f RK |
6987 | referenced within the function. |
6988 | ||
6989 | We could just generate a location descriptor here for all non-NULL | |
6990 | non-pseudo values of DECL_RTL and ignore all of the rest, but we can be | |
6991 | a little nicer than that if we also consider DECL_INCOMING_RTL in cases | |
6992 | where DECL_RTL is NULL or is a pseudo-reg. | |
6993 | ||
6994 | Note however that we can only get away with using DECL_INCOMING_RTL as | |
6995 | a backup substitute for DECL_RTL in certain limited cases. In cases | |
6996 | where DECL_ARG_TYPE (decl) indicates the same type as TREE_TYPE (decl), | |
6997 | we can be sure that the parameter was passed using the same type as it is | |
6998 | declared to have within the function, and that its DECL_INCOMING_RTL | |
6999 | points us to a place where a value of that type is passed. | |
7000 | ||
7001 | In cases where DECL_ARG_TYPE (decl) and TREE_TYPE (decl) are different, | |
7002 | we cannot (in general) use DECL_INCOMING_RTL as a substitute for DECL_RTL | |
7003 | because in these cases DECL_INCOMING_RTL points us to a value of some | |
7004 | type which is *different* from the type of the parameter itself. Thus, | |
7005 | if we tried to use DECL_INCOMING_RTL to generate a location attribute in | |
7006 | such cases, the debugger would end up (for example) trying to fetch a | |
7007 | `float' from a place which actually contains the first part of a | |
7008 | `double'. That would lead to really incorrect and confusing | |
7009 | output at debug-time. | |
7010 | ||
7011 | So, in general, we *do not* use DECL_INCOMING_RTL as a backup for DECL_RTL | |
7012 | in cases where DECL_ARG_TYPE (decl) != TREE_TYPE (decl). There | |
7013 | are a couple of exceptions however. On little-endian machines we can | |
7014 | get away with using DECL_INCOMING_RTL even when DECL_ARG_TYPE (decl) is | |
7015 | not the same as TREE_TYPE (decl), but only when DECL_ARG_TYPE (decl) is | |
7016 | an integral type that is smaller than TREE_TYPE (decl). These cases arise | |
7017 | when (on a little-endian machine) a non-prototyped function has a | |
7018 | parameter declared to be of type `short' or `char'. In such cases, | |
7019 | TREE_TYPE (decl) will be `short' or `char', DECL_ARG_TYPE (decl) will | |
7020 | be `int', and DECL_INCOMING_RTL will point to the lowest-order byte of the | |
7021 | passed `int' value. If the debugger then uses that address to fetch | |
7022 | a `short' or a `char' (on a little-endian machine) the result will be | |
7023 | the correct data, so we allow for such exceptional cases below. | |
7024 | ||
7025 | Note that our goal here is to describe the place where the given formal | |
7026 | parameter lives during most of the function's activation (i.e. between | |
7027 | the end of the prologue and the start of the epilogue). We'll do that | |
7028 | as best as we can. Note however that if the given formal parameter is | |
7029 | modified sometime during the execution of the function, then a stack | |
7030 | backtrace (at debug-time) will show the function as having been | |
7031 | called with the *new* value rather than the value which was | |
7032 | originally passed in. This happens rarely enough that it is not | |
7033 | a major problem, but it *is* a problem, and I'd like to fix it. | |
7034 | ||
7035 | A future version of dwarf2out.c may generate two additional | |
7036 | attributes for any given DW_TAG_formal_parameter DIE which will | |
7037 | describe the "passed type" and the "passed location" for the | |
7038 | given formal parameter in addition to the attributes we now | |
7039 | generate to indicate the "declared type" and the "active | |
7040 | location" for each parameter. This additional set of attributes | |
7041 | could be used by debuggers for stack backtraces. Separately, note | |
7042 | that sometimes DECL_RTL can be NULL and DECL_INCOMING_RTL can be | |
7043 | NULL also. This happens (for example) for inlined-instances of | |
7044 | inline function formal parameters which are never referenced. | |
7045 | This really shouldn't be happening. All PARM_DECL nodes should | |
7046 | get valid non-NULL DECL_INCOMING_RTL values, but integrate.c | |
7047 | doesn't currently generate these values for inlined instances of | |
7048 | inline function parameters, so when we see such cases, we are | |
956d6950 | 7049 | just out-of-luck for the time being (until integrate.c |
a3f97cbb JW |
7050 | gets fixed). */ |
7051 | ||
7052 | /* Use DECL_RTL as the "location" unless we find something better. */ | |
7053 | rtl = DECL_RTL (decl); | |
7054 | ||
7055 | if (TREE_CODE (decl) == PARM_DECL) | |
7056 | { | |
7057 | if (rtl == NULL_RTX || is_pseudo_reg (rtl)) | |
7058 | { | |
7059 | declared_type = type_main_variant (TREE_TYPE (decl)); | |
7060 | passed_type = type_main_variant (DECL_ARG_TYPE (decl)); | |
a3f97cbb | 7061 | |
71dfc51f | 7062 | /* This decl represents a formal parameter which was optimized out. |
a3f97cbb JW |
7063 | Note that DECL_INCOMING_RTL may be NULL in here, but we handle |
7064 | all* cases where (rtl == NULL_RTX) just below. */ | |
7065 | if (declared_type == passed_type) | |
71dfc51f RK |
7066 | rtl = DECL_INCOMING_RTL (decl); |
7067 | else if (! BYTES_BIG_ENDIAN | |
7068 | && TREE_CODE (declared_type) == INTEGER_TYPE | |
7069 | && TYPE_SIZE (declared_type) <= TYPE_SIZE (passed_type)) | |
7070 | rtl = DECL_INCOMING_RTL (decl); | |
a3f97cbb JW |
7071 | } |
7072 | } | |
71dfc51f | 7073 | |
61b32c02 JM |
7074 | if (rtl == NULL_RTX) |
7075 | return; | |
7076 | ||
1914f5da | 7077 | rtl = eliminate_regs (rtl, 0, NULL_RTX); |
6a7a9f01 JM |
7078 | #ifdef LEAF_REG_REMAP |
7079 | if (leaf_function) | |
5f52dcfe | 7080 | leaf_renumber_regs_insn (rtl); |
6a7a9f01 JM |
7081 | #endif |
7082 | ||
a3f97cbb JW |
7083 | switch (GET_CODE (rtl)) |
7084 | { | |
e9a25f70 JL |
7085 | case ADDRESSOF: |
7086 | /* The address of a variable that was optimized away; don't emit | |
7087 | anything. */ | |
7088 | break; | |
7089 | ||
a3f97cbb JW |
7090 | case CONST_INT: |
7091 | case CONST_DOUBLE: | |
7092 | case CONST_STRING: | |
7093 | case SYMBOL_REF: | |
7094 | case LABEL_REF: | |
7095 | case CONST: | |
7096 | case PLUS: | |
7097 | /* DECL_RTL could be (plus (reg ...) (const_int ...)) */ | |
7098 | add_const_value_attribute (die, rtl); | |
7099 | break; | |
7100 | ||
7101 | case MEM: | |
7102 | case REG: | |
7103 | case SUBREG: | |
4401bf24 | 7104 | case CONCAT: |
ef76d03b | 7105 | add_AT_location_description (die, DW_AT_location, rtl); |
a3f97cbb JW |
7106 | break; |
7107 | ||
7108 | default: | |
71dfc51f | 7109 | abort (); |
a3f97cbb JW |
7110 | } |
7111 | } | |
7112 | ||
7113 | /* Generate an DW_AT_name attribute given some string value to be included as | |
7114 | the value of the attribute. */ | |
71dfc51f RK |
7115 | |
7116 | static inline void | |
a3f97cbb JW |
7117 | add_name_attribute (die, name_string) |
7118 | register dw_die_ref die; | |
7119 | register char *name_string; | |
7120 | { | |
71dfc51f RK |
7121 | if (name_string != NULL && *name_string != 0) |
7122 | add_AT_string (die, DW_AT_name, name_string); | |
a3f97cbb JW |
7123 | } |
7124 | ||
7125 | /* Given a tree node describing an array bound (either lower or upper) output | |
466446b0 | 7126 | a representation for that bound. */ |
71dfc51f | 7127 | |
a3f97cbb JW |
7128 | static void |
7129 | add_bound_info (subrange_die, bound_attr, bound) | |
7130 | register dw_die_ref subrange_die; | |
7131 | register enum dwarf_attribute bound_attr; | |
7132 | register tree bound; | |
7133 | { | |
a3f97cbb | 7134 | register unsigned bound_value = 0; |
ef76d03b JW |
7135 | |
7136 | /* If this is an Ada unconstrained array type, then don't emit any debug | |
7137 | info because the array bounds are unknown. They are parameterized when | |
7138 | the type is instantiated. */ | |
7139 | if (contains_placeholder_p (bound)) | |
7140 | return; | |
7141 | ||
a3f97cbb JW |
7142 | switch (TREE_CODE (bound)) |
7143 | { | |
7144 | case ERROR_MARK: | |
7145 | return; | |
7146 | ||
7147 | /* All fixed-bounds are represented by INTEGER_CST nodes. */ | |
7148 | case INTEGER_CST: | |
7149 | bound_value = TREE_INT_CST_LOW (bound); | |
141719a8 JM |
7150 | if (bound_attr == DW_AT_lower_bound |
7151 | && ((is_c_family () && bound_value == 0) | |
7152 | || (is_fortran () && bound_value == 1))) | |
7153 | /* use the default */; | |
7154 | else | |
7155 | add_AT_unsigned (subrange_die, bound_attr, bound_value); | |
a3f97cbb JW |
7156 | break; |
7157 | ||
b1ccbc24 | 7158 | case CONVERT_EXPR: |
a3f97cbb | 7159 | case NOP_EXPR: |
b1ccbc24 RK |
7160 | case NON_LVALUE_EXPR: |
7161 | add_bound_info (subrange_die, bound_attr, TREE_OPERAND (bound, 0)); | |
7162 | break; | |
7163 | ||
a3f97cbb JW |
7164 | case SAVE_EXPR: |
7165 | /* If optimization is turned on, the SAVE_EXPRs that describe how to | |
466446b0 JM |
7166 | access the upper bound values may be bogus. If they refer to a |
7167 | register, they may only describe how to get at these values at the | |
7168 | points in the generated code right after they have just been | |
7169 | computed. Worse yet, in the typical case, the upper bound values | |
7170 | will not even *be* computed in the optimized code (though the | |
7171 | number of elements will), so these SAVE_EXPRs are entirely | |
7172 | bogus. In order to compensate for this fact, we check here to see | |
7173 | if optimization is enabled, and if so, we don't add an attribute | |
7174 | for the (unknown and unknowable) upper bound. This should not | |
7175 | cause too much trouble for existing (stupid?) debuggers because | |
7176 | they have to deal with empty upper bounds location descriptions | |
7177 | anyway in order to be able to deal with incomplete array types. | |
7178 | Of course an intelligent debugger (GDB?) should be able to | |
7179 | comprehend that a missing upper bound specification in a array | |
7180 | type used for a storage class `auto' local array variable | |
7181 | indicates that the upper bound is both unknown (at compile- time) | |
7182 | and unknowable (at run-time) due to optimization. | |
7183 | ||
7184 | We assume that a MEM rtx is safe because gcc wouldn't put the | |
7185 | value there unless it was going to be used repeatedly in the | |
7186 | function, i.e. for cleanups. */ | |
7187 | if (! optimize || GET_CODE (SAVE_EXPR_RTL (bound)) == MEM) | |
a3f97cbb | 7188 | { |
466446b0 JM |
7189 | register dw_die_ref ctx = lookup_decl_die (current_function_decl); |
7190 | register dw_die_ref decl_die = new_die (DW_TAG_variable, ctx); | |
f5963e61 JL |
7191 | register rtx loc = SAVE_EXPR_RTL (bound); |
7192 | ||
7193 | /* If the RTL for the SAVE_EXPR is memory, handle the case where | |
7194 | it references an outer function's frame. */ | |
7195 | ||
7196 | if (GET_CODE (loc) == MEM) | |
7197 | { | |
7198 | rtx new_addr = fix_lexical_addr (XEXP (loc, 0), bound); | |
7199 | ||
7200 | if (XEXP (loc, 0) != new_addr) | |
7201 | loc = gen_rtx (MEM, GET_MODE (loc), new_addr); | |
7202 | } | |
7203 | ||
466446b0 JM |
7204 | add_AT_flag (decl_die, DW_AT_artificial, 1); |
7205 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
f5963e61 | 7206 | add_AT_location_description (decl_die, DW_AT_location, loc); |
466446b0 | 7207 | add_AT_die_ref (subrange_die, bound_attr, decl_die); |
a3f97cbb | 7208 | } |
71dfc51f RK |
7209 | |
7210 | /* Else leave out the attribute. */ | |
a3f97cbb | 7211 | break; |
3f76745e | 7212 | |
ef76d03b JW |
7213 | case MAX_EXPR: |
7214 | case VAR_DECL: | |
c85f7c16 | 7215 | case COMPONENT_REF: |
ef76d03b JW |
7216 | /* ??? These types of bounds can be created by the Ada front end, |
7217 | and it isn't clear how to emit debug info for them. */ | |
7218 | break; | |
7219 | ||
3f76745e JM |
7220 | default: |
7221 | abort (); | |
a3f97cbb JW |
7222 | } |
7223 | } | |
7224 | ||
7225 | /* Note that the block of subscript information for an array type also | |
7226 | includes information about the element type of type given array type. */ | |
71dfc51f | 7227 | |
a3f97cbb JW |
7228 | static void |
7229 | add_subscript_info (type_die, type) | |
7230 | register dw_die_ref type_die; | |
7231 | register tree type; | |
7232 | { | |
081f5e7e | 7233 | #ifndef MIPS_DEBUGGING_INFO |
a3f97cbb | 7234 | register unsigned dimension_number; |
081f5e7e | 7235 | #endif |
a3f97cbb JW |
7236 | register tree lower, upper; |
7237 | register dw_die_ref subrange_die; | |
7238 | ||
7239 | /* The GNU compilers represent multidimensional array types as sequences of | |
7240 | one dimensional array types whose element types are themselves array | |
7241 | types. Here we squish that down, so that each multidimensional array | |
7242 | type gets only one array_type DIE in the Dwarf debugging info. The draft | |
7243 | Dwarf specification say that we are allowed to do this kind of | |
7244 | compression in C (because there is no difference between an array or | |
7245 | arrays and a multidimensional array in C) but for other source languages | |
7246 | (e.g. Ada) we probably shouldn't do this. */ | |
71dfc51f | 7247 | |
a3f97cbb JW |
7248 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
7249 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
7250 | We work around this by disabling this feature. See also | |
7251 | gen_array_type_die. */ | |
7252 | #ifndef MIPS_DEBUGGING_INFO | |
7253 | for (dimension_number = 0; | |
7254 | TREE_CODE (type) == ARRAY_TYPE; | |
7255 | type = TREE_TYPE (type), dimension_number++) | |
7256 | { | |
7257 | #endif | |
7258 | register tree domain = TYPE_DOMAIN (type); | |
7259 | ||
7260 | /* Arrays come in three flavors: Unspecified bounds, fixed bounds, | |
7261 | and (in GNU C only) variable bounds. Handle all three forms | |
7262 | here. */ | |
7263 | subrange_die = new_die (DW_TAG_subrange_type, type_die); | |
7264 | if (domain) | |
7265 | { | |
7266 | /* We have an array type with specified bounds. */ | |
7267 | lower = TYPE_MIN_VALUE (domain); | |
7268 | upper = TYPE_MAX_VALUE (domain); | |
7269 | ||
a9d38797 JM |
7270 | /* define the index type. */ |
7271 | if (TREE_TYPE (domain)) | |
ef76d03b JW |
7272 | { |
7273 | /* ??? This is probably an Ada unnamed subrange type. Ignore the | |
7274 | TREE_TYPE field. We can't emit debug info for this | |
7275 | because it is an unnamed integral type. */ | |
7276 | if (TREE_CODE (domain) == INTEGER_TYPE | |
7277 | && TYPE_NAME (domain) == NULL_TREE | |
7278 | && TREE_CODE (TREE_TYPE (domain)) == INTEGER_TYPE | |
7279 | && TYPE_NAME (TREE_TYPE (domain)) == NULL_TREE) | |
7280 | ; | |
7281 | else | |
7282 | add_type_attribute (subrange_die, TREE_TYPE (domain), 0, 0, | |
7283 | type_die); | |
7284 | } | |
a9d38797 | 7285 | |
e1ee5cdc RH |
7286 | /* ??? If upper is NULL, the array has unspecified length, |
7287 | but it does have a lower bound. This happens with Fortran | |
7288 | dimension arr(N:*) | |
7289 | Since the debugger is definitely going to need to know N | |
7290 | to produce useful results, go ahead and output the lower | |
7291 | bound solo, and hope the debugger can cope. */ | |
7292 | ||
141719a8 | 7293 | add_bound_info (subrange_die, DW_AT_lower_bound, lower); |
e1ee5cdc RH |
7294 | if (upper) |
7295 | add_bound_info (subrange_die, DW_AT_upper_bound, upper); | |
a3f97cbb JW |
7296 | } |
7297 | else | |
71dfc51f | 7298 | /* We have an array type with an unspecified length. The DWARF-2 |
a9d38797 JM |
7299 | spec does not say how to handle this; let's just leave out the |
7300 | bounds. */ | |
2d8b0f3a JL |
7301 | {;} |
7302 | ||
71dfc51f | 7303 | |
a3f97cbb JW |
7304 | #ifndef MIPS_DEBUGGING_INFO |
7305 | } | |
7306 | #endif | |
7307 | } | |
7308 | ||
7309 | static void | |
7310 | add_byte_size_attribute (die, tree_node) | |
7311 | dw_die_ref die; | |
7312 | register tree tree_node; | |
7313 | { | |
7314 | register unsigned size; | |
7315 | ||
7316 | switch (TREE_CODE (tree_node)) | |
7317 | { | |
7318 | case ERROR_MARK: | |
7319 | size = 0; | |
7320 | break; | |
7321 | case ENUMERAL_TYPE: | |
7322 | case RECORD_TYPE: | |
7323 | case UNION_TYPE: | |
7324 | case QUAL_UNION_TYPE: | |
7325 | size = int_size_in_bytes (tree_node); | |
7326 | break; | |
7327 | case FIELD_DECL: | |
7328 | /* For a data member of a struct or union, the DW_AT_byte_size is | |
7329 | generally given as the number of bytes normally allocated for an | |
7330 | object of the *declared* type of the member itself. This is true | |
7331 | even for bit-fields. */ | |
7332 | size = simple_type_size_in_bits (field_type (tree_node)) / BITS_PER_UNIT; | |
7333 | break; | |
7334 | default: | |
7335 | abort (); | |
7336 | } | |
7337 | ||
7338 | /* Note that `size' might be -1 when we get to this point. If it is, that | |
7339 | indicates that the byte size of the entity in question is variable. We | |
7340 | have no good way of expressing this fact in Dwarf at the present time, | |
7341 | so just let the -1 pass on through. */ | |
7342 | ||
7343 | add_AT_unsigned (die, DW_AT_byte_size, size); | |
7344 | } | |
7345 | ||
7346 | /* For a FIELD_DECL node which represents a bit-field, output an attribute | |
7347 | which specifies the distance in bits from the highest order bit of the | |
7348 | "containing object" for the bit-field to the highest order bit of the | |
7349 | bit-field itself. | |
7350 | ||
b2932ae5 JM |
7351 | For any given bit-field, the "containing object" is a hypothetical |
7352 | object (of some integral or enum type) within which the given bit-field | |
7353 | lives. The type of this hypothetical "containing object" is always the | |
7354 | same as the declared type of the individual bit-field itself. The | |
7355 | determination of the exact location of the "containing object" for a | |
7356 | bit-field is rather complicated. It's handled by the | |
7357 | `field_byte_offset' function (above). | |
a3f97cbb JW |
7358 | |
7359 | Note that it is the size (in bytes) of the hypothetical "containing object" | |
7360 | which will be given in the DW_AT_byte_size attribute for this bit-field. | |
7361 | (See `byte_size_attribute' above). */ | |
71dfc51f RK |
7362 | |
7363 | static inline void | |
a3f97cbb JW |
7364 | add_bit_offset_attribute (die, decl) |
7365 | register dw_die_ref die; | |
7366 | register tree decl; | |
7367 | { | |
7368 | register unsigned object_offset_in_bytes = field_byte_offset (decl); | |
7369 | register tree type = DECL_BIT_FIELD_TYPE (decl); | |
7370 | register tree bitpos_tree = DECL_FIELD_BITPOS (decl); | |
7371 | register unsigned bitpos_int; | |
7372 | register unsigned highest_order_object_bit_offset; | |
7373 | register unsigned highest_order_field_bit_offset; | |
7374 | register unsigned bit_offset; | |
7375 | ||
3a88cbd1 JL |
7376 | /* Must be a field and a bit field. */ |
7377 | if (!type | |
7378 | || TREE_CODE (decl) != FIELD_DECL) | |
7379 | abort (); | |
a3f97cbb JW |
7380 | |
7381 | /* We can't yet handle bit-fields whose offsets are variable, so if we | |
7382 | encounter such things, just return without generating any attribute | |
7383 | whatsoever. */ | |
7384 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
71dfc51f RK |
7385 | return; |
7386 | ||
a3f97cbb JW |
7387 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); |
7388 | ||
7389 | /* Note that the bit offset is always the distance (in bits) from the | |
7390 | highest-order bit of the "containing object" to the highest-order bit of | |
7391 | the bit-field itself. Since the "high-order end" of any object or field | |
7392 | is different on big-endian and little-endian machines, the computation | |
7393 | below must take account of these differences. */ | |
7394 | highest_order_object_bit_offset = object_offset_in_bytes * BITS_PER_UNIT; | |
7395 | highest_order_field_bit_offset = bitpos_int; | |
7396 | ||
71dfc51f | 7397 | if (! BYTES_BIG_ENDIAN) |
a3f97cbb JW |
7398 | { |
7399 | highest_order_field_bit_offset | |
7400 | += (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl)); | |
7401 | ||
7402 | highest_order_object_bit_offset += simple_type_size_in_bits (type); | |
7403 | } | |
71dfc51f RK |
7404 | |
7405 | bit_offset | |
7406 | = (! BYTES_BIG_ENDIAN | |
7407 | ? highest_order_object_bit_offset - highest_order_field_bit_offset | |
7408 | : highest_order_field_bit_offset - highest_order_object_bit_offset); | |
a3f97cbb JW |
7409 | |
7410 | add_AT_unsigned (die, DW_AT_bit_offset, bit_offset); | |
7411 | } | |
7412 | ||
7413 | /* For a FIELD_DECL node which represents a bit field, output an attribute | |
7414 | which specifies the length in bits of the given field. */ | |
71dfc51f RK |
7415 | |
7416 | static inline void | |
a3f97cbb JW |
7417 | add_bit_size_attribute (die, decl) |
7418 | register dw_die_ref die; | |
7419 | register tree decl; | |
7420 | { | |
3a88cbd1 JL |
7421 | /* Must be a field and a bit field. */ |
7422 | if (TREE_CODE (decl) != FIELD_DECL | |
7423 | || ! DECL_BIT_FIELD_TYPE (decl)) | |
7424 | abort (); | |
a3f97cbb JW |
7425 | add_AT_unsigned (die, DW_AT_bit_size, |
7426 | (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl))); | |
7427 | } | |
7428 | ||
88dad228 | 7429 | /* If the compiled language is ANSI C, then add a 'prototyped' |
a3f97cbb | 7430 | attribute, if arg types are given for the parameters of a function. */ |
71dfc51f RK |
7431 | |
7432 | static inline void | |
a3f97cbb JW |
7433 | add_prototyped_attribute (die, func_type) |
7434 | register dw_die_ref die; | |
7435 | register tree func_type; | |
7436 | { | |
88dad228 JM |
7437 | if (get_AT_unsigned (comp_unit_die, DW_AT_language) == DW_LANG_C89 |
7438 | && TYPE_ARG_TYPES (func_type) != NULL) | |
7439 | add_AT_flag (die, DW_AT_prototyped, 1); | |
a3f97cbb JW |
7440 | } |
7441 | ||
7442 | ||
7443 | /* Add an 'abstract_origin' attribute below a given DIE. The DIE is found | |
7444 | by looking in either the type declaration or object declaration | |
7445 | equate table. */ | |
71dfc51f RK |
7446 | |
7447 | static inline void | |
a3f97cbb JW |
7448 | add_abstract_origin_attribute (die, origin) |
7449 | register dw_die_ref die; | |
7450 | register tree origin; | |
7451 | { | |
7452 | dw_die_ref origin_die = NULL; | |
7453 | if (TREE_CODE_CLASS (TREE_CODE (origin)) == 'd') | |
71dfc51f | 7454 | origin_die = lookup_decl_die (origin); |
a3f97cbb | 7455 | else if (TREE_CODE_CLASS (TREE_CODE (origin)) == 't') |
71dfc51f RK |
7456 | origin_die = lookup_type_die (origin); |
7457 | ||
a3f97cbb JW |
7458 | add_AT_die_ref (die, DW_AT_abstract_origin, origin_die); |
7459 | } | |
7460 | ||
bdb669cb JM |
7461 | /* We do not currently support the pure_virtual attribute. */ |
7462 | ||
71dfc51f | 7463 | static inline void |
a3f97cbb JW |
7464 | add_pure_or_virtual_attribute (die, func_decl) |
7465 | register dw_die_ref die; | |
7466 | register tree func_decl; | |
7467 | { | |
a94dbf2c | 7468 | if (DECL_VINDEX (func_decl)) |
a3f97cbb | 7469 | { |
bdb669cb | 7470 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); |
71dfc51f RK |
7471 | add_AT_loc (die, DW_AT_vtable_elem_location, |
7472 | new_loc_descr (DW_OP_constu, | |
7473 | TREE_INT_CST_LOW (DECL_VINDEX (func_decl)), | |
7474 | 0)); | |
7475 | ||
a94dbf2c JM |
7476 | /* GNU extension: Record what type this method came from originally. */ |
7477 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
7478 | add_AT_die_ref (die, DW_AT_containing_type, | |
7479 | lookup_type_die (DECL_CONTEXT (func_decl))); | |
a3f97cbb JW |
7480 | } |
7481 | } | |
7482 | \f | |
b2932ae5 | 7483 | /* Add source coordinate attributes for the given decl. */ |
71dfc51f | 7484 | |
b2932ae5 JM |
7485 | static void |
7486 | add_src_coords_attributes (die, decl) | |
7487 | register dw_die_ref die; | |
7488 | register tree decl; | |
7489 | { | |
7490 | register unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 7491 | |
b2932ae5 JM |
7492 | add_AT_unsigned (die, DW_AT_decl_file, file_index); |
7493 | add_AT_unsigned (die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
7494 | } | |
7495 | ||
a3f97cbb JW |
7496 | /* Add an DW_AT_name attribute and source coordinate attribute for the |
7497 | given decl, but only if it actually has a name. */ | |
71dfc51f | 7498 | |
a3f97cbb JW |
7499 | static void |
7500 | add_name_and_src_coords_attributes (die, decl) | |
7501 | register dw_die_ref die; | |
7502 | register tree decl; | |
7503 | { | |
61b32c02 | 7504 | register tree decl_name; |
71dfc51f | 7505 | |
a1d7ffe3 | 7506 | decl_name = DECL_NAME (decl); |
71dfc51f | 7507 | if (decl_name != NULL && IDENTIFIER_POINTER (decl_name) != NULL) |
a3f97cbb | 7508 | { |
a1d7ffe3 | 7509 | add_name_attribute (die, dwarf2_name (decl, 0)); |
b2932ae5 | 7510 | add_src_coords_attributes (die, decl); |
a1d7ffe3 JM |
7511 | if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL) |
7512 | && DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl)) | |
7513 | add_AT_string (die, DW_AT_MIPS_linkage_name, | |
7514 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
a3f97cbb JW |
7515 | } |
7516 | } | |
7517 | ||
7518 | /* Push a new declaration scope. */ | |
71dfc51f | 7519 | |
a3f97cbb JW |
7520 | static void |
7521 | push_decl_scope (scope) | |
7522 | tree scope; | |
7523 | { | |
e3e7774e JW |
7524 | tree containing_scope; |
7525 | int i; | |
7526 | ||
a3f97cbb JW |
7527 | /* Make room in the decl_scope_table, if necessary. */ |
7528 | if (decl_scope_table_allocated == decl_scope_depth) | |
7529 | { | |
7530 | decl_scope_table_allocated += DECL_SCOPE_TABLE_INCREMENT; | |
71dfc51f | 7531 | decl_scope_table |
e3e7774e JW |
7532 | = (decl_scope_node *) xrealloc (decl_scope_table, |
7533 | (decl_scope_table_allocated | |
7534 | * sizeof (decl_scope_node))); | |
a3f97cbb | 7535 | } |
71dfc51f | 7536 | |
e3e7774e JW |
7537 | decl_scope_table[decl_scope_depth].scope = scope; |
7538 | ||
7539 | /* Sometimes, while recursively emitting subtypes within a class type, | |
7540 | we end up recuring on a subtype at a higher level then the current | |
7541 | subtype. In such a case, we need to search the decl_scope_table to | |
7542 | find the parent of this subtype. */ | |
7543 | ||
7544 | if (TREE_CODE_CLASS (TREE_CODE (scope)) == 't') | |
7545 | containing_scope = TYPE_CONTEXT (scope); | |
7546 | else | |
7547 | containing_scope = NULL_TREE; | |
7548 | ||
7549 | /* The normal case. */ | |
7550 | if (decl_scope_depth == 0 | |
7551 | || containing_scope == NULL_TREE | |
2addbe1d JM |
7552 | /* Ignore namespaces for the moment. */ |
7553 | || TREE_CODE (containing_scope) == NAMESPACE_DECL | |
e3e7774e JW |
7554 | || containing_scope == decl_scope_table[decl_scope_depth - 1].scope) |
7555 | decl_scope_table[decl_scope_depth].previous = decl_scope_depth - 1; | |
7556 | else | |
7557 | { | |
7558 | /* We need to search for the containing_scope. */ | |
7559 | for (i = 0; i < decl_scope_depth; i++) | |
7560 | if (decl_scope_table[i].scope == containing_scope) | |
7561 | break; | |
7562 | ||
7563 | if (i == decl_scope_depth) | |
7564 | abort (); | |
7565 | else | |
7566 | decl_scope_table[decl_scope_depth].previous = i; | |
7567 | } | |
7568 | ||
7569 | decl_scope_depth++; | |
a3f97cbb JW |
7570 | } |
7571 | ||
2addbe1d | 7572 | /* Return the DIE for the scope that immediately contains this declaration. */ |
71dfc51f | 7573 | |
a3f97cbb | 7574 | static dw_die_ref |
ab72d377 JM |
7575 | scope_die_for (t, context_die) |
7576 | register tree t; | |
a3f97cbb JW |
7577 | register dw_die_ref context_die; |
7578 | { | |
7579 | register dw_die_ref scope_die = NULL; | |
7580 | register tree containing_scope; | |
e3e7774e | 7581 | register int i; |
a3f97cbb JW |
7582 | |
7583 | /* Walk back up the declaration tree looking for a place to define | |
7584 | this type. */ | |
ab72d377 JM |
7585 | if (TREE_CODE_CLASS (TREE_CODE (t)) == 't') |
7586 | containing_scope = TYPE_CONTEXT (t); | |
a94dbf2c | 7587 | else if (TREE_CODE (t) == FUNCTION_DECL && DECL_VINDEX (t)) |
ab72d377 JM |
7588 | containing_scope = decl_class_context (t); |
7589 | else | |
7590 | containing_scope = DECL_CONTEXT (t); | |
7591 | ||
2addbe1d JM |
7592 | /* Ignore namespaces for the moment. */ |
7593 | if (containing_scope && TREE_CODE (containing_scope) == NAMESPACE_DECL) | |
7594 | containing_scope = NULL_TREE; | |
7595 | ||
ef76d03b JW |
7596 | /* Function-local tags and functions get stuck in limbo until they are |
7597 | fixed up by decls_for_scope. */ | |
7598 | if (context_die == NULL && containing_scope != NULL_TREE | |
7599 | && (TREE_CODE (t) == FUNCTION_DECL || is_tagged_type (t))) | |
7600 | return NULL; | |
7601 | ||
71dfc51f RK |
7602 | if (containing_scope == NULL_TREE) |
7603 | scope_die = comp_unit_die; | |
a3f97cbb JW |
7604 | else |
7605 | { | |
e3e7774e JW |
7606 | for (i = decl_scope_depth - 1, scope_die = context_die; |
7607 | i >= 0 && decl_scope_table[i].scope != containing_scope; | |
7608 | (scope_die = scope_die->die_parent, | |
7609 | i = decl_scope_table[i].previous)) | |
71dfc51f RK |
7610 | ; |
7611 | ||
0c84c618 JW |
7612 | /* ??? Integrate_decl_tree does not handle BLOCK_TYPE_TAGS, nor |
7613 | does it try to handle types defined by TYPE_DECLs. Such types | |
7614 | thus have an incorrect TYPE_CONTEXT, which points to the block | |
7615 | they were originally defined in, instead of the current block | |
7616 | created by function inlining. We try to detect that here and | |
7617 | work around it. */ | |
7618 | ||
7619 | if (i < 0 && scope_die == comp_unit_die | |
7620 | && TREE_CODE (containing_scope) == BLOCK | |
7621 | && is_tagged_type (t) | |
7622 | && (block_ultimate_origin (decl_scope_table[decl_scope_depth - 1].scope) | |
7623 | == containing_scope)) | |
7624 | { | |
7625 | scope_die = context_die; | |
7626 | /* Since the checks below are no longer applicable. */ | |
7627 | i = 0; | |
7628 | } | |
7629 | ||
e3e7774e | 7630 | if (i < 0) |
a3f97cbb | 7631 | { |
3a88cbd1 JL |
7632 | if (scope_die != comp_unit_die |
7633 | || TREE_CODE_CLASS (TREE_CODE (containing_scope)) != 't') | |
7634 | abort (); | |
7635 | if (debug_info_level > DINFO_LEVEL_TERSE | |
7636 | && !TREE_ASM_WRITTEN (containing_scope)) | |
7637 | abort (); | |
a3f97cbb JW |
7638 | } |
7639 | } | |
71dfc51f | 7640 | |
a3f97cbb JW |
7641 | return scope_die; |
7642 | } | |
7643 | ||
7644 | /* Pop a declaration scope. */ | |
71dfc51f | 7645 | static inline void |
a3f97cbb JW |
7646 | pop_decl_scope () |
7647 | { | |
3a88cbd1 JL |
7648 | if (decl_scope_depth <= 0) |
7649 | abort (); | |
a3f97cbb JW |
7650 | --decl_scope_depth; |
7651 | } | |
7652 | ||
7653 | /* Many forms of DIEs require a "type description" attribute. This | |
7654 | routine locates the proper "type descriptor" die for the type given | |
7655 | by 'type', and adds an DW_AT_type attribute below the given die. */ | |
71dfc51f | 7656 | |
a3f97cbb JW |
7657 | static void |
7658 | add_type_attribute (object_die, type, decl_const, decl_volatile, context_die) | |
7659 | register dw_die_ref object_die; | |
7660 | register tree type; | |
7661 | register int decl_const; | |
7662 | register int decl_volatile; | |
7663 | register dw_die_ref context_die; | |
7664 | { | |
7665 | register enum tree_code code = TREE_CODE (type); | |
a3f97cbb JW |
7666 | register dw_die_ref type_die = NULL; |
7667 | ||
ef76d03b JW |
7668 | /* ??? If this type is an unnamed subrange type of an integral or |
7669 | floating-point type, use the inner type. This is because we have no | |
7670 | support for unnamed types in base_type_die. This can happen if this is | |
7671 | an Ada subrange type. Correct solution is emit a subrange type die. */ | |
b1ccbc24 RK |
7672 | if ((code == INTEGER_TYPE || code == REAL_TYPE) |
7673 | && TREE_TYPE (type) != 0 && TYPE_NAME (type) == 0) | |
7674 | type = TREE_TYPE (type), code = TREE_CODE (type); | |
7675 | ||
a3f97cbb | 7676 | if (code == ERROR_MARK) |
b1ccbc24 | 7677 | return; |
a3f97cbb JW |
7678 | |
7679 | /* Handle a special case. For functions whose return type is void, we | |
7680 | generate *no* type attribute. (Note that no object may have type | |
7681 | `void', so this only applies to function return types). */ | |
7682 | if (code == VOID_TYPE) | |
b1ccbc24 | 7683 | return; |
a3f97cbb | 7684 | |
a3f97cbb JW |
7685 | type_die = modified_type_die (type, |
7686 | decl_const || TYPE_READONLY (type), | |
7687 | decl_volatile || TYPE_VOLATILE (type), | |
ab72d377 | 7688 | context_die); |
a3f97cbb | 7689 | if (type_die != NULL) |
71dfc51f | 7690 | add_AT_die_ref (object_die, DW_AT_type, type_die); |
a3f97cbb JW |
7691 | } |
7692 | ||
7693 | /* Given a tree pointer to a struct, class, union, or enum type node, return | |
7694 | a pointer to the (string) tag name for the given type, or zero if the type | |
7695 | was declared without a tag. */ | |
71dfc51f | 7696 | |
a3f97cbb JW |
7697 | static char * |
7698 | type_tag (type) | |
7699 | register tree type; | |
7700 | { | |
7701 | register char *name = 0; | |
7702 | ||
7703 | if (TYPE_NAME (type) != 0) | |
7704 | { | |
7705 | register tree t = 0; | |
7706 | ||
7707 | /* Find the IDENTIFIER_NODE for the type name. */ | |
7708 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
7709 | t = TYPE_NAME (type); | |
bdb669cb | 7710 | |
a3f97cbb JW |
7711 | /* The g++ front end makes the TYPE_NAME of *each* tagged type point to |
7712 | a TYPE_DECL node, regardless of whether or not a `typedef' was | |
bdb669cb | 7713 | involved. */ |
a94dbf2c JM |
7714 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
7715 | && ! DECL_IGNORED_P (TYPE_NAME (type))) | |
a3f97cbb | 7716 | t = DECL_NAME (TYPE_NAME (type)); |
bdb669cb | 7717 | |
a3f97cbb JW |
7718 | /* Now get the name as a string, or invent one. */ |
7719 | if (t != 0) | |
a94dbf2c | 7720 | name = IDENTIFIER_POINTER (t); |
a3f97cbb | 7721 | } |
71dfc51f | 7722 | |
a3f97cbb JW |
7723 | return (name == 0 || *name == '\0') ? 0 : name; |
7724 | } | |
7725 | ||
7726 | /* Return the type associated with a data member, make a special check | |
7727 | for bit field types. */ | |
71dfc51f RK |
7728 | |
7729 | static inline tree | |
a3f97cbb JW |
7730 | member_declared_type (member) |
7731 | register tree member; | |
7732 | { | |
71dfc51f RK |
7733 | return (DECL_BIT_FIELD_TYPE (member) |
7734 | ? DECL_BIT_FIELD_TYPE (member) | |
7735 | : TREE_TYPE (member)); | |
a3f97cbb JW |
7736 | } |
7737 | ||
d291dd49 | 7738 | /* Get the decl's label, as described by its RTL. This may be different |
a3f97cbb | 7739 | from the DECL_NAME name used in the source file. */ |
71dfc51f | 7740 | |
487a6e06 | 7741 | #if 0 |
a3f97cbb | 7742 | static char * |
d291dd49 | 7743 | decl_start_label (decl) |
a3f97cbb JW |
7744 | register tree decl; |
7745 | { | |
7746 | rtx x; | |
7747 | char *fnname; | |
7748 | x = DECL_RTL (decl); | |
7749 | if (GET_CODE (x) != MEM) | |
71dfc51f RK |
7750 | abort (); |
7751 | ||
a3f97cbb JW |
7752 | x = XEXP (x, 0); |
7753 | if (GET_CODE (x) != SYMBOL_REF) | |
71dfc51f RK |
7754 | abort (); |
7755 | ||
a3f97cbb JW |
7756 | fnname = XSTR (x, 0); |
7757 | return fnname; | |
7758 | } | |
487a6e06 | 7759 | #endif |
a3f97cbb | 7760 | \f |
956d6950 | 7761 | /* These routines generate the internal representation of the DIE's for |
a3f97cbb | 7762 | the compilation unit. Debugging information is collected by walking |
88dad228 | 7763 | the declaration trees passed in from dwarf2out_decl(). */ |
a3f97cbb JW |
7764 | |
7765 | static void | |
7766 | gen_array_type_die (type, context_die) | |
7767 | register tree type; | |
7768 | register dw_die_ref context_die; | |
7769 | { | |
ab72d377 | 7770 | register dw_die_ref scope_die = scope_die_for (type, context_die); |
a9d38797 | 7771 | register dw_die_ref array_die; |
a3f97cbb | 7772 | register tree element_type; |
bdb669cb | 7773 | |
a9d38797 JM |
7774 | /* ??? The SGI dwarf reader fails for array of array of enum types unless |
7775 | the inner array type comes before the outer array type. Thus we must | |
7776 | call gen_type_die before we call new_die. See below also. */ | |
7777 | #ifdef MIPS_DEBUGGING_INFO | |
7778 | gen_type_die (TREE_TYPE (type), context_die); | |
7779 | #endif | |
7780 | ||
7781 | array_die = new_die (DW_TAG_array_type, scope_die); | |
7782 | ||
a3f97cbb JW |
7783 | #if 0 |
7784 | /* We default the array ordering. SDB will probably do | |
7785 | the right things even if DW_AT_ordering is not present. It's not even | |
7786 | an issue until we start to get into multidimensional arrays anyway. If | |
7787 | SDB is ever caught doing the Wrong Thing for multi-dimensional arrays, | |
7788 | then we'll have to put the DW_AT_ordering attribute back in. (But if | |
7789 | and when we find out that we need to put these in, we will only do so | |
7790 | for multidimensional arrays. */ | |
7791 | add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_row_major); | |
7792 | #endif | |
7793 | ||
a9d38797 | 7794 | #ifdef MIPS_DEBUGGING_INFO |
4edb7b60 JM |
7795 | /* The SGI compilers handle arrays of unknown bound by setting |
7796 | AT_declaration and not emitting any subrange DIEs. */ | |
a9d38797 JM |
7797 | if (! TYPE_DOMAIN (type)) |
7798 | add_AT_unsigned (array_die, DW_AT_declaration, 1); | |
7799 | else | |
7800 | #endif | |
7801 | add_subscript_info (array_die, type); | |
a3f97cbb JW |
7802 | |
7803 | equate_type_number_to_die (type, array_die); | |
7804 | ||
7805 | /* Add representation of the type of the elements of this array type. */ | |
7806 | element_type = TREE_TYPE (type); | |
71dfc51f | 7807 | |
a3f97cbb JW |
7808 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
7809 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
7810 | We work around this by disabling this feature. See also | |
7811 | add_subscript_info. */ | |
7812 | #ifndef MIPS_DEBUGGING_INFO | |
71dfc51f RK |
7813 | while (TREE_CODE (element_type) == ARRAY_TYPE) |
7814 | element_type = TREE_TYPE (element_type); | |
7815 | ||
a3f97cbb | 7816 | gen_type_die (element_type, context_die); |
a9d38797 | 7817 | #endif |
a3f97cbb JW |
7818 | |
7819 | add_type_attribute (array_die, element_type, 0, 0, context_die); | |
7820 | } | |
7821 | ||
7822 | static void | |
7823 | gen_set_type_die (type, context_die) | |
7824 | register tree type; | |
7825 | register dw_die_ref context_die; | |
7826 | { | |
71dfc51f RK |
7827 | register dw_die_ref type_die |
7828 | = new_die (DW_TAG_set_type, scope_die_for (type, context_die)); | |
7829 | ||
a3f97cbb | 7830 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
7831 | add_type_attribute (type_die, TREE_TYPE (type), 0, 0, context_die); |
7832 | } | |
7833 | ||
d6f4ec51 | 7834 | #if 0 |
a3f97cbb JW |
7835 | static void |
7836 | gen_entry_point_die (decl, context_die) | |
7837 | register tree decl; | |
7838 | register dw_die_ref context_die; | |
7839 | { | |
7840 | register tree origin = decl_ultimate_origin (decl); | |
7841 | register dw_die_ref decl_die = new_die (DW_TAG_entry_point, context_die); | |
7842 | if (origin != NULL) | |
71dfc51f | 7843 | add_abstract_origin_attribute (decl_die, origin); |
a3f97cbb JW |
7844 | else |
7845 | { | |
7846 | add_name_and_src_coords_attributes (decl_die, decl); | |
a3f97cbb JW |
7847 | add_type_attribute (decl_die, TREE_TYPE (TREE_TYPE (decl)), |
7848 | 0, 0, context_die); | |
7849 | } | |
71dfc51f | 7850 | |
a3f97cbb | 7851 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 7852 | equate_decl_number_to_die (decl, decl_die); |
a3f97cbb | 7853 | else |
71dfc51f | 7854 | add_AT_lbl_id (decl_die, DW_AT_low_pc, decl_start_label (decl)); |
a3f97cbb | 7855 | } |
d6f4ec51 | 7856 | #endif |
a3f97cbb | 7857 | |
a94dbf2c JM |
7858 | /* Remember a type in the pending_types_list. */ |
7859 | ||
7860 | static void | |
7861 | pend_type (type) | |
7862 | register tree type; | |
7863 | { | |
7864 | if (pending_types == pending_types_allocated) | |
7865 | { | |
7866 | pending_types_allocated += PENDING_TYPES_INCREMENT; | |
7867 | pending_types_list | |
7868 | = (tree *) xrealloc (pending_types_list, | |
7869 | sizeof (tree) * pending_types_allocated); | |
7870 | } | |
71dfc51f | 7871 | |
a94dbf2c JM |
7872 | pending_types_list[pending_types++] = type; |
7873 | } | |
7874 | ||
7875 | /* Output any pending types (from the pending_types list) which we can output | |
7876 | now (taking into account the scope that we are working on now). | |
7877 | ||
7878 | For each type output, remove the given type from the pending_types_list | |
7879 | *before* we try to output it. */ | |
7880 | ||
7881 | static void | |
7882 | output_pending_types_for_scope (context_die) | |
7883 | register dw_die_ref context_die; | |
7884 | { | |
7885 | register tree type; | |
7886 | ||
7887 | while (pending_types) | |
7888 | { | |
7889 | --pending_types; | |
7890 | type = pending_types_list[pending_types]; | |
7891 | gen_type_die (type, context_die); | |
3a88cbd1 JL |
7892 | if (!TREE_ASM_WRITTEN (type)) |
7893 | abort (); | |
a94dbf2c JM |
7894 | } |
7895 | } | |
7896 | ||
a3f97cbb | 7897 | /* Generate a DIE to represent an inlined instance of an enumeration type. */ |
71dfc51f | 7898 | |
a3f97cbb JW |
7899 | static void |
7900 | gen_inlined_enumeration_type_die (type, context_die) | |
7901 | register tree type; | |
7902 | register dw_die_ref context_die; | |
7903 | { | |
71dfc51f RK |
7904 | register dw_die_ref type_die = new_die (DW_TAG_enumeration_type, |
7905 | scope_die_for (type, context_die)); | |
7906 | ||
3a88cbd1 JL |
7907 | if (!TREE_ASM_WRITTEN (type)) |
7908 | abort (); | |
a3f97cbb JW |
7909 | add_abstract_origin_attribute (type_die, type); |
7910 | } | |
7911 | ||
7912 | /* Generate a DIE to represent an inlined instance of a structure type. */ | |
71dfc51f | 7913 | |
a3f97cbb JW |
7914 | static void |
7915 | gen_inlined_structure_type_die (type, context_die) | |
7916 | register tree type; | |
7917 | register dw_die_ref context_die; | |
7918 | { | |
71dfc51f RK |
7919 | register dw_die_ref type_die = new_die (DW_TAG_structure_type, |
7920 | scope_die_for (type, context_die)); | |
7921 | ||
3a88cbd1 JL |
7922 | if (!TREE_ASM_WRITTEN (type)) |
7923 | abort (); | |
a3f97cbb JW |
7924 | add_abstract_origin_attribute (type_die, type); |
7925 | } | |
7926 | ||
7927 | /* Generate a DIE to represent an inlined instance of a union type. */ | |
71dfc51f | 7928 | |
a3f97cbb JW |
7929 | static void |
7930 | gen_inlined_union_type_die (type, context_die) | |
7931 | register tree type; | |
7932 | register dw_die_ref context_die; | |
7933 | { | |
71dfc51f RK |
7934 | register dw_die_ref type_die = new_die (DW_TAG_union_type, |
7935 | scope_die_for (type, context_die)); | |
7936 | ||
3a88cbd1 JL |
7937 | if (!TREE_ASM_WRITTEN (type)) |
7938 | abort (); | |
a3f97cbb JW |
7939 | add_abstract_origin_attribute (type_die, type); |
7940 | } | |
7941 | ||
7942 | /* Generate a DIE to represent an enumeration type. Note that these DIEs | |
7943 | include all of the information about the enumeration values also. Each | |
273dbe67 JM |
7944 | enumerated type name/value is listed as a child of the enumerated type |
7945 | DIE. */ | |
71dfc51f | 7946 | |
a3f97cbb | 7947 | static void |
273dbe67 | 7948 | gen_enumeration_type_die (type, context_die) |
a3f97cbb | 7949 | register tree type; |
a3f97cbb JW |
7950 | register dw_die_ref context_die; |
7951 | { | |
273dbe67 JM |
7952 | register dw_die_ref type_die = lookup_type_die (type); |
7953 | ||
a3f97cbb JW |
7954 | if (type_die == NULL) |
7955 | { | |
7956 | type_die = new_die (DW_TAG_enumeration_type, | |
ab72d377 | 7957 | scope_die_for (type, context_die)); |
a3f97cbb JW |
7958 | equate_type_number_to_die (type, type_die); |
7959 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 7960 | } |
273dbe67 JM |
7961 | else if (! TYPE_SIZE (type)) |
7962 | return; | |
7963 | else | |
7964 | remove_AT (type_die, DW_AT_declaration); | |
7965 | ||
7966 | /* Handle a GNU C/C++ extension, i.e. incomplete enum types. If the | |
7967 | given enum type is incomplete, do not generate the DW_AT_byte_size | |
7968 | attribute or the DW_AT_element_list attribute. */ | |
7969 | if (TYPE_SIZE (type)) | |
a3f97cbb | 7970 | { |
273dbe67 | 7971 | register tree link; |
71dfc51f | 7972 | |
a082c85a | 7973 | TREE_ASM_WRITTEN (type) = 1; |
273dbe67 | 7974 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 7975 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 7976 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 7977 | |
ef76d03b JW |
7978 | /* If the first reference to this type was as the return type of an |
7979 | inline function, then it may not have a parent. Fix this now. */ | |
7980 | if (type_die->die_parent == NULL) | |
7981 | add_child_die (scope_die_for (type, context_die), type_die); | |
7982 | ||
273dbe67 JM |
7983 | for (link = TYPE_FIELDS (type); |
7984 | link != NULL; link = TREE_CHAIN (link)) | |
a3f97cbb | 7985 | { |
273dbe67 | 7986 | register dw_die_ref enum_die = new_die (DW_TAG_enumerator, type_die); |
71dfc51f | 7987 | |
273dbe67 JM |
7988 | add_name_attribute (enum_die, |
7989 | IDENTIFIER_POINTER (TREE_PURPOSE (link))); | |
7990 | add_AT_unsigned (enum_die, DW_AT_const_value, | |
a3f97cbb | 7991 | (unsigned) TREE_INT_CST_LOW (TREE_VALUE (link))); |
a3f97cbb JW |
7992 | } |
7993 | } | |
273dbe67 JM |
7994 | else |
7995 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
7996 | } |
7997 | ||
7998 | ||
7999 | /* Generate a DIE to represent either a real live formal parameter decl or to | |
8000 | represent just the type of some formal parameter position in some function | |
8001 | type. | |
71dfc51f | 8002 | |
a3f97cbb JW |
8003 | Note that this routine is a bit unusual because its argument may be a |
8004 | ..._DECL node (i.e. either a PARM_DECL or perhaps a VAR_DECL which | |
8005 | represents an inlining of some PARM_DECL) or else some sort of a ..._TYPE | |
8006 | node. If it's the former then this function is being called to output a | |
8007 | DIE to represent a formal parameter object (or some inlining thereof). If | |
8008 | it's the latter, then this function is only being called to output a | |
8009 | DW_TAG_formal_parameter DIE to stand as a placeholder for some formal | |
8010 | argument type of some subprogram type. */ | |
71dfc51f | 8011 | |
a94dbf2c | 8012 | static dw_die_ref |
a3f97cbb JW |
8013 | gen_formal_parameter_die (node, context_die) |
8014 | register tree node; | |
8015 | register dw_die_ref context_die; | |
8016 | { | |
71dfc51f RK |
8017 | register dw_die_ref parm_die |
8018 | = new_die (DW_TAG_formal_parameter, context_die); | |
a3f97cbb | 8019 | register tree origin; |
71dfc51f | 8020 | |
a3f97cbb JW |
8021 | switch (TREE_CODE_CLASS (TREE_CODE (node))) |
8022 | { | |
a3f97cbb JW |
8023 | case 'd': |
8024 | origin = decl_ultimate_origin (node); | |
8025 | if (origin != NULL) | |
a94dbf2c | 8026 | add_abstract_origin_attribute (parm_die, origin); |
a3f97cbb JW |
8027 | else |
8028 | { | |
8029 | add_name_and_src_coords_attributes (parm_die, node); | |
8030 | add_type_attribute (parm_die, TREE_TYPE (node), | |
8031 | TREE_READONLY (node), | |
8032 | TREE_THIS_VOLATILE (node), | |
8033 | context_die); | |
bdb669cb JM |
8034 | if (DECL_ARTIFICIAL (node)) |
8035 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb | 8036 | } |
71dfc51f | 8037 | |
141719a8 JM |
8038 | equate_decl_number_to_die (node, parm_die); |
8039 | if (! DECL_ABSTRACT (node)) | |
a94dbf2c | 8040 | add_location_or_const_value_attribute (parm_die, node); |
71dfc51f | 8041 | |
a3f97cbb JW |
8042 | break; |
8043 | ||
a3f97cbb | 8044 | case 't': |
71dfc51f | 8045 | /* We were called with some kind of a ..._TYPE node. */ |
a3f97cbb JW |
8046 | add_type_attribute (parm_die, node, 0, 0, context_die); |
8047 | break; | |
8048 | ||
a3f97cbb JW |
8049 | default: |
8050 | abort (); | |
8051 | } | |
71dfc51f | 8052 | |
a94dbf2c | 8053 | return parm_die; |
a3f97cbb JW |
8054 | } |
8055 | ||
8056 | /* Generate a special type of DIE used as a stand-in for a trailing ellipsis | |
8057 | at the end of an (ANSI prototyped) formal parameters list. */ | |
71dfc51f | 8058 | |
a3f97cbb JW |
8059 | static void |
8060 | gen_unspecified_parameters_die (decl_or_type, context_die) | |
8061 | register tree decl_or_type; | |
8062 | register dw_die_ref context_die; | |
8063 | { | |
487a6e06 | 8064 | new_die (DW_TAG_unspecified_parameters, context_die); |
a3f97cbb JW |
8065 | } |
8066 | ||
8067 | /* Generate a list of nameless DW_TAG_formal_parameter DIEs (and perhaps a | |
8068 | DW_TAG_unspecified_parameters DIE) to represent the types of the formal | |
8069 | parameters as specified in some function type specification (except for | |
8070 | those which appear as part of a function *definition*). | |
71dfc51f RK |
8071 | |
8072 | Note we must be careful here to output all of the parameter DIEs before* | |
a3f97cbb JW |
8073 | we output any DIEs needed to represent the types of the formal parameters. |
8074 | This keeps svr4 SDB happy because it (incorrectly) thinks that the first | |
8075 | non-parameter DIE it sees ends the formal parameter list. */ | |
71dfc51f | 8076 | |
a3f97cbb JW |
8077 | static void |
8078 | gen_formal_types_die (function_or_method_type, context_die) | |
8079 | register tree function_or_method_type; | |
8080 | register dw_die_ref context_die; | |
8081 | { | |
8082 | register tree link; | |
8083 | register tree formal_type = NULL; | |
8084 | register tree first_parm_type = TYPE_ARG_TYPES (function_or_method_type); | |
8085 | ||
bdb669cb | 8086 | #if 0 |
a3f97cbb JW |
8087 | /* In the case where we are generating a formal types list for a C++ |
8088 | non-static member function type, skip over the first thing on the | |
8089 | TYPE_ARG_TYPES list because it only represents the type of the hidden | |
8090 | `this pointer'. The debugger should be able to figure out (without | |
8091 | being explicitly told) that this non-static member function type takes a | |
8092 | `this pointer' and should be able to figure what the type of that hidden | |
8093 | parameter is from the DW_AT_member attribute of the parent | |
8094 | DW_TAG_subroutine_type DIE. */ | |
8095 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE) | |
8096 | first_parm_type = TREE_CHAIN (first_parm_type); | |
bdb669cb | 8097 | #endif |
a3f97cbb JW |
8098 | |
8099 | /* Make our first pass over the list of formal parameter types and output a | |
8100 | DW_TAG_formal_parameter DIE for each one. */ | |
8101 | for (link = first_parm_type; link; link = TREE_CHAIN (link)) | |
8102 | { | |
a94dbf2c JM |
8103 | register dw_die_ref parm_die; |
8104 | ||
a3f97cbb JW |
8105 | formal_type = TREE_VALUE (link); |
8106 | if (formal_type == void_type_node) | |
8107 | break; | |
8108 | ||
8109 | /* Output a (nameless) DIE to represent the formal parameter itself. */ | |
a94dbf2c JM |
8110 | parm_die = gen_formal_parameter_die (formal_type, context_die); |
8111 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE | |
8112 | && link == first_parm_type) | |
8113 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb JW |
8114 | } |
8115 | ||
8116 | /* If this function type has an ellipsis, add a | |
8117 | DW_TAG_unspecified_parameters DIE to the end of the parameter list. */ | |
8118 | if (formal_type != void_type_node) | |
8119 | gen_unspecified_parameters_die (function_or_method_type, context_die); | |
8120 | ||
8121 | /* Make our second (and final) pass over the list of formal parameter types | |
8122 | and output DIEs to represent those types (as necessary). */ | |
8123 | for (link = TYPE_ARG_TYPES (function_or_method_type); | |
8124 | link; | |
8125 | link = TREE_CHAIN (link)) | |
8126 | { | |
8127 | formal_type = TREE_VALUE (link); | |
8128 | if (formal_type == void_type_node) | |
8129 | break; | |
8130 | ||
b50c02f9 | 8131 | gen_type_die (formal_type, context_die); |
a3f97cbb JW |
8132 | } |
8133 | } | |
8134 | ||
8135 | /* Generate a DIE to represent a declared function (either file-scope or | |
8136 | block-local). */ | |
71dfc51f | 8137 | |
a3f97cbb JW |
8138 | static void |
8139 | gen_subprogram_die (decl, context_die) | |
8140 | register tree decl; | |
8141 | register dw_die_ref context_die; | |
8142 | { | |
8143 | char label_id[MAX_ARTIFICIAL_LABEL_BYTES]; | |
8144 | register tree origin = decl_ultimate_origin (decl); | |
4b674448 | 8145 | register dw_die_ref subr_die; |
b1ccbc24 | 8146 | register rtx fp_reg; |
a3f97cbb JW |
8147 | register tree fn_arg_types; |
8148 | register tree outer_scope; | |
a94dbf2c | 8149 | register dw_die_ref old_die = lookup_decl_die (decl); |
9c6cd30e JM |
8150 | register int declaration |
8151 | = (current_function_decl != decl | |
8152 | || (context_die | |
8153 | && (context_die->die_tag == DW_TAG_structure_type | |
8154 | || context_die->die_tag == DW_TAG_union_type))); | |
a3f97cbb | 8155 | |
a3f97cbb JW |
8156 | if (origin != NULL) |
8157 | { | |
4b674448 | 8158 | subr_die = new_die (DW_TAG_subprogram, context_die); |
a3f97cbb JW |
8159 | add_abstract_origin_attribute (subr_die, origin); |
8160 | } | |
4401bf24 JL |
8161 | else if (old_die && DECL_ABSTRACT (decl) |
8162 | && get_AT_unsigned (old_die, DW_AT_inline)) | |
8163 | { | |
8164 | /* This must be a redefinition of an extern inline function. | |
8165 | We can just reuse the old die here. */ | |
8166 | subr_die = old_die; | |
8167 | ||
8168 | /* Clear out the inlined attribute and parm types. */ | |
8169 | remove_AT (subr_die, DW_AT_inline); | |
8170 | remove_children (subr_die); | |
8171 | } | |
bdb669cb JM |
8172 | else if (old_die) |
8173 | { | |
4b674448 JM |
8174 | register unsigned file_index |
8175 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
a94dbf2c | 8176 | |
3a88cbd1 JL |
8177 | if (get_AT_flag (old_die, DW_AT_declaration) != 1) |
8178 | abort (); | |
4b674448 JM |
8179 | |
8180 | /* If the definition comes from the same place as the declaration, | |
a94dbf2c JM |
8181 | maybe use the old DIE. We always want the DIE for this function |
8182 | that has the *_pc attributes to be under comp_unit_die so the | |
8183 | debugger can find it. For inlines, that is the concrete instance, | |
8184 | so we can use the old DIE here. For non-inline methods, we want a | |
8185 | specification DIE at toplevel, so we need a new DIE. For local | |
8186 | class methods, this does not apply. */ | |
8187 | if ((DECL_ABSTRACT (decl) || old_die->die_parent == comp_unit_die | |
8188 | || context_die == NULL) | |
8189 | && get_AT_unsigned (old_die, DW_AT_decl_file) == file_index | |
4b674448 JM |
8190 | && (get_AT_unsigned (old_die, DW_AT_decl_line) |
8191 | == DECL_SOURCE_LINE (decl))) | |
bdb669cb | 8192 | { |
4b674448 JM |
8193 | subr_die = old_die; |
8194 | ||
8195 | /* Clear out the declaration attribute and the parm types. */ | |
8196 | remove_AT (subr_die, DW_AT_declaration); | |
8197 | remove_children (subr_die); | |
8198 | } | |
8199 | else | |
8200 | { | |
8201 | subr_die = new_die (DW_TAG_subprogram, context_die); | |
8202 | add_AT_die_ref (subr_die, DW_AT_specification, old_die); | |
bdb669cb JM |
8203 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
8204 | add_AT_unsigned (subr_die, DW_AT_decl_file, file_index); | |
8205 | if (get_AT_unsigned (old_die, DW_AT_decl_line) | |
8206 | != DECL_SOURCE_LINE (decl)) | |
8207 | add_AT_unsigned | |
8208 | (subr_die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
8209 | } | |
8210 | } | |
a3f97cbb JW |
8211 | else |
8212 | { | |
4edb7b60 JM |
8213 | register dw_die_ref scope_die; |
8214 | ||
8215 | if (DECL_CONTEXT (decl)) | |
8216 | scope_die = scope_die_for (decl, context_die); | |
8217 | else | |
8218 | /* Don't put block extern declarations under comp_unit_die. */ | |
8219 | scope_die = context_die; | |
8220 | ||
8221 | subr_die = new_die (DW_TAG_subprogram, scope_die); | |
8222 | ||
273dbe67 JM |
8223 | if (TREE_PUBLIC (decl)) |
8224 | add_AT_flag (subr_die, DW_AT_external, 1); | |
71dfc51f | 8225 | |
a3f97cbb | 8226 | add_name_and_src_coords_attributes (subr_die, decl); |
4927276d JM |
8227 | if (debug_info_level > DINFO_LEVEL_TERSE) |
8228 | { | |
8229 | register tree type = TREE_TYPE (decl); | |
71dfc51f | 8230 | |
4927276d JM |
8231 | add_prototyped_attribute (subr_die, type); |
8232 | add_type_attribute (subr_die, TREE_TYPE (type), 0, 0, context_die); | |
8233 | } | |
71dfc51f | 8234 | |
a3f97cbb | 8235 | add_pure_or_virtual_attribute (subr_die, decl); |
273dbe67 JM |
8236 | if (DECL_ARTIFICIAL (decl)) |
8237 | add_AT_flag (subr_die, DW_AT_artificial, 1); | |
a94dbf2c JM |
8238 | if (TREE_PROTECTED (decl)) |
8239 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_protected); | |
8240 | else if (TREE_PRIVATE (decl)) | |
8241 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 8242 | } |
4edb7b60 | 8243 | |
a94dbf2c JM |
8244 | if (declaration) |
8245 | { | |
8246 | add_AT_flag (subr_die, DW_AT_declaration, 1); | |
8247 | ||
8248 | /* The first time we see a member function, it is in the context of | |
8249 | the class to which it belongs. We make sure of this by emitting | |
8250 | the class first. The next time is the definition, which is | |
8251 | handled above. The two may come from the same source text. */ | |
f6c74b02 | 8252 | if (DECL_CONTEXT (decl)) |
a94dbf2c JM |
8253 | equate_decl_number_to_die (decl, subr_die); |
8254 | } | |
8255 | else if (DECL_ABSTRACT (decl)) | |
a3f97cbb | 8256 | { |
4401bf24 JL |
8257 | /* ??? Checking DECL_DEFER_OUTPUT is correct for static inline functions, |
8258 | but not for extern inline functions. We can't get this completely | |
8259 | correct because information about whether the function was declared | |
8260 | inline is not saved anywhere. */ | |
61b32c02 JM |
8261 | if (DECL_DEFER_OUTPUT (decl)) |
8262 | { | |
8263 | if (DECL_INLINE (decl)) | |
8264 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_inlined); | |
8265 | else | |
8266 | add_AT_unsigned (subr_die, DW_AT_inline, | |
8267 | DW_INL_declared_not_inlined); | |
8268 | } | |
8269 | else if (DECL_INLINE (decl)) | |
8270 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_inlined); | |
8271 | else | |
8272 | abort (); | |
8273 | ||
a3f97cbb JW |
8274 | equate_decl_number_to_die (decl, subr_die); |
8275 | } | |
8276 | else if (!DECL_EXTERNAL (decl)) | |
8277 | { | |
71dfc51f | 8278 | if (origin == NULL_TREE) |
ba7b35df | 8279 | equate_decl_number_to_die (decl, subr_die); |
71dfc51f | 8280 | |
5c90448c JM |
8281 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_BEGIN_LABEL, |
8282 | current_funcdef_number); | |
7d4440be | 8283 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label_id); |
5c90448c JM |
8284 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_END_LABEL, |
8285 | current_funcdef_number); | |
a3f97cbb JW |
8286 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label_id); |
8287 | ||
d291dd49 JM |
8288 | add_pubname (decl, subr_die); |
8289 | add_arange (decl, subr_die); | |
8290 | ||
a3f97cbb | 8291 | #ifdef MIPS_DEBUGGING_INFO |
a3f97cbb JW |
8292 | /* Add a reference to the FDE for this routine. */ |
8293 | add_AT_fde_ref (subr_die, DW_AT_MIPS_fde, current_funcdef_fde); | |
8294 | #endif | |
8295 | ||
810429b7 JM |
8296 | /* Define the "frame base" location for this routine. We use the |
8297 | frame pointer or stack pointer registers, since the RTL for local | |
8298 | variables is relative to one of them. */ | |
b1ccbc24 RK |
8299 | fp_reg |
8300 | = frame_pointer_needed ? hard_frame_pointer_rtx : stack_pointer_rtx; | |
8301 | add_AT_loc (subr_die, DW_AT_frame_base, reg_loc_descriptor (fp_reg)); | |
a3f97cbb | 8302 | |
ef76d03b JW |
8303 | #if 0 |
8304 | /* ??? This fails for nested inline functions, because context_display | |
8305 | is not part of the state saved/restored for inline functions. */ | |
88dad228 | 8306 | if (current_function_needs_context) |
ef76d03b JW |
8307 | add_AT_location_description (subr_die, DW_AT_static_link, |
8308 | lookup_static_chain (decl)); | |
8309 | #endif | |
a3f97cbb JW |
8310 | } |
8311 | ||
8312 | /* Now output descriptions of the arguments for this function. This gets | |
8313 | (unnecessarily?) complex because of the fact that the DECL_ARGUMENT list | |
8314 | for a FUNCTION_DECL doesn't indicate cases where there was a trailing | |
8315 | `...' at the end of the formal parameter list. In order to find out if | |
8316 | there was a trailing ellipsis or not, we must instead look at the type | |
8317 | associated with the FUNCTION_DECL. This will be a node of type | |
8318 | FUNCTION_TYPE. If the chain of type nodes hanging off of this | |
8319 | FUNCTION_TYPE node ends with a void_type_node then there should *not* be | |
8320 | an ellipsis at the end. */ | |
ab72d377 | 8321 | push_decl_scope (decl); |
71dfc51f | 8322 | |
a3f97cbb JW |
8323 | /* In the case where we are describing a mere function declaration, all we |
8324 | need to do here (and all we *can* do here) is to describe the *types* of | |
8325 | its formal parameters. */ | |
4927276d | 8326 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
71dfc51f | 8327 | ; |
4edb7b60 JM |
8328 | else if (declaration) |
8329 | gen_formal_types_die (TREE_TYPE (decl), subr_die); | |
a3f97cbb JW |
8330 | else |
8331 | { | |
8332 | /* Generate DIEs to represent all known formal parameters */ | |
8333 | register tree arg_decls = DECL_ARGUMENTS (decl); | |
8334 | register tree parm; | |
8335 | ||
8336 | /* When generating DIEs, generate the unspecified_parameters DIE | |
8337 | instead if we come across the arg "__builtin_va_alist" */ | |
8338 | for (parm = arg_decls; parm; parm = TREE_CHAIN (parm)) | |
71dfc51f RK |
8339 | if (TREE_CODE (parm) == PARM_DECL) |
8340 | { | |
db3cf6fb MS |
8341 | if (DECL_NAME (parm) |
8342 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
8343 | "__builtin_va_alist")) | |
71dfc51f RK |
8344 | gen_unspecified_parameters_die (parm, subr_die); |
8345 | else | |
8346 | gen_decl_die (parm, subr_die); | |
8347 | } | |
a3f97cbb JW |
8348 | |
8349 | /* Decide whether we need a unspecified_parameters DIE at the end. | |
8350 | There are 2 more cases to do this for: 1) the ansi ... declaration - | |
8351 | this is detectable when the end of the arg list is not a | |
8352 | void_type_node 2) an unprototyped function declaration (not a | |
8353 | definition). This just means that we have no info about the | |
8354 | parameters at all. */ | |
8355 | fn_arg_types = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
71dfc51f | 8356 | if (fn_arg_types != NULL) |
a3f97cbb JW |
8357 | { |
8358 | /* this is the prototyped case, check for ... */ | |
8359 | if (TREE_VALUE (tree_last (fn_arg_types)) != void_type_node) | |
71dfc51f | 8360 | gen_unspecified_parameters_die (decl, subr_die); |
a3f97cbb | 8361 | } |
71dfc51f RK |
8362 | else if (DECL_INITIAL (decl) == NULL_TREE) |
8363 | gen_unspecified_parameters_die (decl, subr_die); | |
a3f97cbb JW |
8364 | } |
8365 | ||
8366 | /* Output Dwarf info for all of the stuff within the body of the function | |
8367 | (if it has one - it may be just a declaration). */ | |
8368 | outer_scope = DECL_INITIAL (decl); | |
8369 | ||
d7248bff JM |
8370 | /* Note that here, `outer_scope' is a pointer to the outermost BLOCK |
8371 | node created to represent a function. This outermost BLOCK actually | |
8372 | represents the outermost binding contour for the function, i.e. the | |
8373 | contour in which the function's formal parameters and labels get | |
8374 | declared. Curiously, it appears that the front end doesn't actually | |
8375 | put the PARM_DECL nodes for the current function onto the BLOCK_VARS | |
8376 | list for this outer scope. (They are strung off of the DECL_ARGUMENTS | |
8377 | list for the function instead.) The BLOCK_VARS list for the | |
8378 | `outer_scope' does provide us with a list of the LABEL_DECL nodes for | |
8379 | the function however, and we output DWARF info for those in | |
8380 | decls_for_scope. Just within the `outer_scope' there will be a BLOCK | |
8381 | node representing the function's outermost pair of curly braces, and | |
8382 | any blocks used for the base and member initializers of a C++ | |
8383 | constructor function. */ | |
4edb7b60 | 8384 | if (! declaration && TREE_CODE (outer_scope) != ERROR_MARK) |
7e23cb16 JM |
8385 | { |
8386 | current_function_has_inlines = 0; | |
8387 | decls_for_scope (outer_scope, subr_die, 0); | |
71dfc51f | 8388 | |
ce61cc73 | 8389 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
7e23cb16 JM |
8390 | if (current_function_has_inlines) |
8391 | { | |
8392 | add_AT_flag (subr_die, DW_AT_MIPS_has_inlines, 1); | |
8393 | if (! comp_unit_has_inlines) | |
8394 | { | |
8395 | add_AT_flag (comp_unit_die, DW_AT_MIPS_has_inlines, 1); | |
8396 | comp_unit_has_inlines = 1; | |
8397 | } | |
8398 | } | |
8399 | #endif | |
8400 | } | |
71dfc51f | 8401 | |
ab72d377 | 8402 | pop_decl_scope (); |
a3f97cbb JW |
8403 | } |
8404 | ||
8405 | /* Generate a DIE to represent a declared data object. */ | |
71dfc51f | 8406 | |
a3f97cbb JW |
8407 | static void |
8408 | gen_variable_die (decl, context_die) | |
8409 | register tree decl; | |
8410 | register dw_die_ref context_die; | |
8411 | { | |
8412 | register tree origin = decl_ultimate_origin (decl); | |
8413 | register dw_die_ref var_die = new_die (DW_TAG_variable, context_die); | |
71dfc51f | 8414 | |
bdb669cb | 8415 | dw_die_ref old_die = lookup_decl_die (decl); |
4edb7b60 JM |
8416 | int declaration |
8417 | = (DECL_EXTERNAL (decl) | |
a94dbf2c JM |
8418 | || current_function_decl != decl_function_context (decl) |
8419 | || context_die->die_tag == DW_TAG_structure_type | |
8420 | || context_die->die_tag == DW_TAG_union_type); | |
4edb7b60 | 8421 | |
a3f97cbb | 8422 | if (origin != NULL) |
71dfc51f | 8423 | add_abstract_origin_attribute (var_die, origin); |
f76b8156 JW |
8424 | /* Loop unrolling can create multiple blocks that refer to the same |
8425 | static variable, so we must test for the DW_AT_declaration flag. */ | |
8426 | /* ??? Loop unrolling/reorder_blocks should perhaps be rewritten to | |
8427 | copy decls and set the DECL_ABSTRACT flag on them instead of | |
8428 | sharing them. */ | |
8429 | else if (old_die && TREE_STATIC (decl) | |
8430 | && get_AT_flag (old_die, DW_AT_declaration) == 1) | |
bdb669cb | 8431 | { |
f76b8156 | 8432 | /* ??? This is an instantiation of a C++ class level static. */ |
bdb669cb JM |
8433 | add_AT_die_ref (var_die, DW_AT_specification, old_die); |
8434 | if (DECL_NAME (decl)) | |
8435 | { | |
8436 | register unsigned file_index | |
8437 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 8438 | |
bdb669cb JM |
8439 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
8440 | add_AT_unsigned (var_die, DW_AT_decl_file, file_index); | |
71dfc51f | 8441 | |
bdb669cb JM |
8442 | if (get_AT_unsigned (old_die, DW_AT_decl_line) |
8443 | != DECL_SOURCE_LINE (decl)) | |
71dfc51f RK |
8444 | |
8445 | add_AT_unsigned (var_die, DW_AT_decl_line, | |
8446 | DECL_SOURCE_LINE (decl)); | |
bdb669cb JM |
8447 | } |
8448 | } | |
a3f97cbb JW |
8449 | else |
8450 | { | |
8451 | add_name_and_src_coords_attributes (var_die, decl); | |
a3f97cbb JW |
8452 | add_type_attribute (var_die, TREE_TYPE (decl), |
8453 | TREE_READONLY (decl), | |
8454 | TREE_THIS_VOLATILE (decl), context_die); | |
71dfc51f | 8455 | |
273dbe67 JM |
8456 | if (TREE_PUBLIC (decl)) |
8457 | add_AT_flag (var_die, DW_AT_external, 1); | |
71dfc51f | 8458 | |
273dbe67 JM |
8459 | if (DECL_ARTIFICIAL (decl)) |
8460 | add_AT_flag (var_die, DW_AT_artificial, 1); | |
71dfc51f | 8461 | |
a94dbf2c JM |
8462 | if (TREE_PROTECTED (decl)) |
8463 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 8464 | |
a94dbf2c JM |
8465 | else if (TREE_PRIVATE (decl)) |
8466 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 8467 | } |
4edb7b60 JM |
8468 | |
8469 | if (declaration) | |
8470 | add_AT_flag (var_die, DW_AT_declaration, 1); | |
8471 | ||
8472 | if ((declaration && decl_class_context (decl)) || DECL_ABSTRACT (decl)) | |
8473 | equate_decl_number_to_die (decl, var_die); | |
8474 | ||
8475 | if (! declaration && ! DECL_ABSTRACT (decl)) | |
a3f97cbb | 8476 | { |
141719a8 | 8477 | equate_decl_number_to_die (decl, var_die); |
a3f97cbb | 8478 | add_location_or_const_value_attribute (var_die, decl); |
d291dd49 | 8479 | add_pubname (decl, var_die); |
a3f97cbb JW |
8480 | } |
8481 | } | |
8482 | ||
8483 | /* Generate a DIE to represent a label identifier. */ | |
71dfc51f | 8484 | |
a3f97cbb JW |
8485 | static void |
8486 | gen_label_die (decl, context_die) | |
8487 | register tree decl; | |
8488 | register dw_die_ref context_die; | |
8489 | { | |
8490 | register tree origin = decl_ultimate_origin (decl); | |
8491 | register dw_die_ref lbl_die = new_die (DW_TAG_label, context_die); | |
8492 | register rtx insn; | |
8493 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
5c90448c | 8494 | char label2[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 8495 | |
a3f97cbb | 8496 | if (origin != NULL) |
71dfc51f | 8497 | add_abstract_origin_attribute (lbl_die, origin); |
a3f97cbb | 8498 | else |
71dfc51f RK |
8499 | add_name_and_src_coords_attributes (lbl_die, decl); |
8500 | ||
a3f97cbb | 8501 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 8502 | equate_decl_number_to_die (decl, lbl_die); |
a3f97cbb JW |
8503 | else |
8504 | { | |
8505 | insn = DECL_RTL (decl); | |
8506 | if (GET_CODE (insn) == CODE_LABEL) | |
8507 | { | |
8508 | /* When optimization is enabled (via -O) some parts of the compiler | |
8509 | (e.g. jump.c and cse.c) may try to delete CODE_LABEL insns which | |
8510 | represent source-level labels which were explicitly declared by | |
8511 | the user. This really shouldn't be happening though, so catch | |
8512 | it if it ever does happen. */ | |
8513 | if (INSN_DELETED_P (insn)) | |
71dfc51f RK |
8514 | abort (); |
8515 | ||
5c90448c JM |
8516 | sprintf (label2, INSN_LABEL_FMT, current_funcdef_number); |
8517 | ASM_GENERATE_INTERNAL_LABEL (label, label2, | |
8518 | (unsigned) INSN_UID (insn)); | |
a3f97cbb JW |
8519 | add_AT_lbl_id (lbl_die, DW_AT_low_pc, label); |
8520 | } | |
8521 | } | |
8522 | } | |
8523 | ||
8524 | /* Generate a DIE for a lexical block. */ | |
71dfc51f | 8525 | |
a3f97cbb | 8526 | static void |
d7248bff | 8527 | gen_lexical_block_die (stmt, context_die, depth) |
a3f97cbb JW |
8528 | register tree stmt; |
8529 | register dw_die_ref context_die; | |
d7248bff | 8530 | int depth; |
a3f97cbb JW |
8531 | { |
8532 | register dw_die_ref stmt_die = new_die (DW_TAG_lexical_block, context_die); | |
8533 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f RK |
8534 | |
8535 | if (! BLOCK_ABSTRACT (stmt)) | |
a3f97cbb | 8536 | { |
5c90448c JM |
8537 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
8538 | next_block_number); | |
a3f97cbb | 8539 | add_AT_lbl_id (stmt_die, DW_AT_low_pc, label); |
5c90448c | 8540 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
a3f97cbb JW |
8541 | add_AT_lbl_id (stmt_die, DW_AT_high_pc, label); |
8542 | } | |
71dfc51f | 8543 | |
7d4440be | 8544 | push_decl_scope (stmt); |
d7248bff | 8545 | decls_for_scope (stmt, stmt_die, depth); |
7d4440be | 8546 | pop_decl_scope (); |
a3f97cbb JW |
8547 | } |
8548 | ||
8549 | /* Generate a DIE for an inlined subprogram. */ | |
71dfc51f | 8550 | |
a3f97cbb | 8551 | static void |
d7248bff | 8552 | gen_inlined_subroutine_die (stmt, context_die, depth) |
a3f97cbb JW |
8553 | register tree stmt; |
8554 | register dw_die_ref context_die; | |
d7248bff | 8555 | int depth; |
a3f97cbb | 8556 | { |
71dfc51f | 8557 | if (! BLOCK_ABSTRACT (stmt)) |
a3f97cbb | 8558 | { |
71dfc51f RK |
8559 | register dw_die_ref subr_die |
8560 | = new_die (DW_TAG_inlined_subroutine, context_die); | |
ab72d377 | 8561 | register tree decl = block_ultimate_origin (stmt); |
d7248bff | 8562 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 8563 | |
ab72d377 | 8564 | add_abstract_origin_attribute (subr_die, decl); |
5c90448c JM |
8565 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
8566 | next_block_number); | |
a3f97cbb | 8567 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label); |
5c90448c | 8568 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
a3f97cbb | 8569 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label); |
ab72d377 | 8570 | push_decl_scope (decl); |
d7248bff | 8571 | decls_for_scope (stmt, subr_die, depth); |
ab72d377 | 8572 | pop_decl_scope (); |
7e23cb16 | 8573 | current_function_has_inlines = 1; |
a3f97cbb | 8574 | } |
a3f97cbb JW |
8575 | } |
8576 | ||
8577 | /* Generate a DIE for a field in a record, or structure. */ | |
71dfc51f | 8578 | |
a3f97cbb JW |
8579 | static void |
8580 | gen_field_die (decl, context_die) | |
8581 | register tree decl; | |
8582 | register dw_die_ref context_die; | |
8583 | { | |
8584 | register dw_die_ref decl_die = new_die (DW_TAG_member, context_die); | |
71dfc51f | 8585 | |
a3f97cbb | 8586 | add_name_and_src_coords_attributes (decl_die, decl); |
a3f97cbb JW |
8587 | add_type_attribute (decl_die, member_declared_type (decl), |
8588 | TREE_READONLY (decl), TREE_THIS_VOLATILE (decl), | |
8589 | context_die); | |
71dfc51f | 8590 | |
a3f97cbb JW |
8591 | /* If this is a bit field... */ |
8592 | if (DECL_BIT_FIELD_TYPE (decl)) | |
8593 | { | |
8594 | add_byte_size_attribute (decl_die, decl); | |
8595 | add_bit_size_attribute (decl_die, decl); | |
8596 | add_bit_offset_attribute (decl_die, decl); | |
8597 | } | |
71dfc51f | 8598 | |
a94dbf2c JM |
8599 | if (TREE_CODE (DECL_FIELD_CONTEXT (decl)) != UNION_TYPE) |
8600 | add_data_member_location_attribute (decl_die, decl); | |
71dfc51f | 8601 | |
273dbe67 JM |
8602 | if (DECL_ARTIFICIAL (decl)) |
8603 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
71dfc51f | 8604 | |
a94dbf2c JM |
8605 | if (TREE_PROTECTED (decl)) |
8606 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 8607 | |
a94dbf2c JM |
8608 | else if (TREE_PRIVATE (decl)) |
8609 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb JW |
8610 | } |
8611 | ||
ab72d377 JM |
8612 | #if 0 |
8613 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. | |
8614 | Use modified_type_die instead. | |
a3f97cbb JW |
8615 | We keep this code here just in case these types of DIEs may be needed to |
8616 | represent certain things in other languages (e.g. Pascal) someday. */ | |
8617 | static void | |
8618 | gen_pointer_type_die (type, context_die) | |
8619 | register tree type; | |
8620 | register dw_die_ref context_die; | |
8621 | { | |
71dfc51f RK |
8622 | register dw_die_ref ptr_die |
8623 | = new_die (DW_TAG_pointer_type, scope_die_for (type, context_die)); | |
8624 | ||
a3f97cbb | 8625 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 8626 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 8627 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb JW |
8628 | } |
8629 | ||
ab72d377 JM |
8630 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. |
8631 | Use modified_type_die instead. | |
a3f97cbb JW |
8632 | We keep this code here just in case these types of DIEs may be needed to |
8633 | represent certain things in other languages (e.g. Pascal) someday. */ | |
8634 | static void | |
8635 | gen_reference_type_die (type, context_die) | |
8636 | register tree type; | |
8637 | register dw_die_ref context_die; | |
8638 | { | |
71dfc51f RK |
8639 | register dw_die_ref ref_die |
8640 | = new_die (DW_TAG_reference_type, scope_die_for (type, context_die)); | |
8641 | ||
a3f97cbb | 8642 | equate_type_number_to_die (type, ref_die); |
a3f97cbb | 8643 | add_type_attribute (ref_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 8644 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb | 8645 | } |
ab72d377 | 8646 | #endif |
a3f97cbb JW |
8647 | |
8648 | /* Generate a DIE for a pointer to a member type. */ | |
8649 | static void | |
8650 | gen_ptr_to_mbr_type_die (type, context_die) | |
8651 | register tree type; | |
8652 | register dw_die_ref context_die; | |
8653 | { | |
71dfc51f RK |
8654 | register dw_die_ref ptr_die |
8655 | = new_die (DW_TAG_ptr_to_member_type, scope_die_for (type, context_die)); | |
8656 | ||
a3f97cbb | 8657 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 8658 | add_AT_die_ref (ptr_die, DW_AT_containing_type, |
bdb669cb | 8659 | lookup_type_die (TYPE_OFFSET_BASETYPE (type))); |
a3f97cbb JW |
8660 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
8661 | } | |
8662 | ||
8663 | /* Generate the DIE for the compilation unit. */ | |
71dfc51f | 8664 | |
a3f97cbb JW |
8665 | static void |
8666 | gen_compile_unit_die (main_input_filename) | |
8667 | register char *main_input_filename; | |
8668 | { | |
8669 | char producer[250]; | |
a3f97cbb JW |
8670 | char *wd = getpwd (); |
8671 | ||
8672 | comp_unit_die = new_die (DW_TAG_compile_unit, NULL); | |
bdb669cb JM |
8673 | add_name_attribute (comp_unit_die, main_input_filename); |
8674 | ||
71dfc51f RK |
8675 | if (wd != NULL) |
8676 | add_AT_string (comp_unit_die, DW_AT_comp_dir, wd); | |
a3f97cbb JW |
8677 | |
8678 | sprintf (producer, "%s %s", language_string, version_string); | |
8679 | ||
8680 | #ifdef MIPS_DEBUGGING_INFO | |
8681 | /* The MIPS/SGI compilers place the 'cc' command line options in the producer | |
8682 | string. The SGI debugger looks for -g, -g1, -g2, or -g3; if they do | |
8683 | not appear in the producer string, the debugger reaches the conclusion | |
8684 | that the object file is stripped and has no debugging information. | |
8685 | To get the MIPS/SGI debugger to believe that there is debugging | |
8686 | information in the object file, we add a -g to the producer string. */ | |
4927276d JM |
8687 | if (debug_info_level > DINFO_LEVEL_TERSE) |
8688 | strcat (producer, " -g"); | |
a3f97cbb JW |
8689 | #endif |
8690 | ||
8691 | add_AT_string (comp_unit_die, DW_AT_producer, producer); | |
a9d38797 | 8692 | |
a3f97cbb | 8693 | if (strcmp (language_string, "GNU C++") == 0) |
a9d38797 | 8694 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C_plus_plus); |
71dfc51f | 8695 | |
a3f97cbb | 8696 | else if (strcmp (language_string, "GNU Ada") == 0) |
a9d38797 | 8697 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Ada83); |
71dfc51f | 8698 | |
a9d38797 JM |
8699 | else if (strcmp (language_string, "GNU F77") == 0) |
8700 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Fortran77); | |
71dfc51f | 8701 | |
bc28c45b RK |
8702 | else if (strcmp (language_string, "GNU Pascal") == 0) |
8703 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Pascal83); | |
8704 | ||
a3f97cbb | 8705 | else if (flag_traditional) |
a9d38797 | 8706 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C); |
71dfc51f | 8707 | |
a3f97cbb | 8708 | else |
a9d38797 JM |
8709 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C89); |
8710 | ||
8711 | #if 0 /* unimplemented */ | |
e90b62db | 8712 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
a9d38797 JM |
8713 | add_AT_unsigned (comp_unit_die, DW_AT_macro_info, 0); |
8714 | #endif | |
a3f97cbb JW |
8715 | } |
8716 | ||
8717 | /* Generate a DIE for a string type. */ | |
71dfc51f | 8718 | |
a3f97cbb JW |
8719 | static void |
8720 | gen_string_type_die (type, context_die) | |
8721 | register tree type; | |
8722 | register dw_die_ref context_die; | |
8723 | { | |
71dfc51f RK |
8724 | register dw_die_ref type_die |
8725 | = new_die (DW_TAG_string_type, scope_die_for (type, context_die)); | |
8726 | ||
bdb669cb | 8727 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
8728 | |
8729 | /* Fudge the string length attribute for now. */ | |
71dfc51f | 8730 | |
a3f97cbb | 8731 | /* TODO: add string length info. |
71dfc51f | 8732 | string_length_attribute (TYPE_MAX_VALUE (TYPE_DOMAIN (type))); |
a3f97cbb JW |
8733 | bound_representation (upper_bound, 0, 'u'); */ |
8734 | } | |
8735 | ||
61b32c02 | 8736 | /* Generate the DIE for a base class. */ |
71dfc51f | 8737 | |
61b32c02 JM |
8738 | static void |
8739 | gen_inheritance_die (binfo, context_die) | |
8740 | register tree binfo; | |
8741 | register dw_die_ref context_die; | |
8742 | { | |
8743 | dw_die_ref die = new_die (DW_TAG_inheritance, context_die); | |
71dfc51f | 8744 | |
61b32c02 JM |
8745 | add_type_attribute (die, BINFO_TYPE (binfo), 0, 0, context_die); |
8746 | add_data_member_location_attribute (die, binfo); | |
71dfc51f | 8747 | |
61b32c02 JM |
8748 | if (TREE_VIA_VIRTUAL (binfo)) |
8749 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); | |
8750 | if (TREE_VIA_PUBLIC (binfo)) | |
8751 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_public); | |
8752 | else if (TREE_VIA_PROTECTED (binfo)) | |
8753 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_protected); | |
8754 | } | |
8755 | ||
956d6950 | 8756 | /* Generate a DIE for a class member. */ |
71dfc51f | 8757 | |
a3f97cbb JW |
8758 | static void |
8759 | gen_member_die (type, context_die) | |
8760 | register tree type; | |
8761 | register dw_die_ref context_die; | |
8762 | { | |
61b32c02 | 8763 | register tree member; |
71dfc51f | 8764 | |
a3f97cbb JW |
8765 | /* If this is not an incomplete type, output descriptions of each of its |
8766 | members. Note that as we output the DIEs necessary to represent the | |
8767 | members of this record or union type, we will also be trying to output | |
8768 | DIEs to represent the *types* of those members. However the `type' | |
8769 | function (above) will specifically avoid generating type DIEs for member | |
8770 | types *within* the list of member DIEs for this (containing) type execpt | |
8771 | for those types (of members) which are explicitly marked as also being | |
8772 | members of this (containing) type themselves. The g++ front- end can | |
8773 | force any given type to be treated as a member of some other | |
8774 | (containing) type by setting the TYPE_CONTEXT of the given (member) type | |
8775 | to point to the TREE node representing the appropriate (containing) | |
8776 | type. */ | |
8777 | ||
61b32c02 JM |
8778 | /* First output info about the base classes. */ |
8779 | if (TYPE_BINFO (type) && TYPE_BINFO_BASETYPES (type)) | |
a3f97cbb | 8780 | { |
61b32c02 JM |
8781 | register tree bases = TYPE_BINFO_BASETYPES (type); |
8782 | register int n_bases = TREE_VEC_LENGTH (bases); | |
8783 | register int i; | |
8784 | ||
8785 | for (i = 0; i < n_bases; i++) | |
8786 | gen_inheritance_die (TREE_VEC_ELT (bases, i), context_die); | |
a3f97cbb JW |
8787 | } |
8788 | ||
61b32c02 JM |
8789 | /* Now output info about the data members and type members. */ |
8790 | for (member = TYPE_FIELDS (type); member; member = TREE_CHAIN (member)) | |
8791 | gen_decl_die (member, context_die); | |
8792 | ||
a3f97cbb | 8793 | /* Now output info about the function members (if any). */ |
61b32c02 JM |
8794 | for (member = TYPE_METHODS (type); member; member = TREE_CHAIN (member)) |
8795 | gen_decl_die (member, context_die); | |
a3f97cbb JW |
8796 | } |
8797 | ||
8798 | /* Generate a DIE for a structure or union type. */ | |
71dfc51f | 8799 | |
a3f97cbb | 8800 | static void |
273dbe67 | 8801 | gen_struct_or_union_type_die (type, context_die) |
a3f97cbb | 8802 | register tree type; |
a3f97cbb JW |
8803 | register dw_die_ref context_die; |
8804 | { | |
273dbe67 | 8805 | register dw_die_ref type_die = lookup_type_die (type); |
a082c85a JM |
8806 | register dw_die_ref scope_die = 0; |
8807 | register int nested = 0; | |
273dbe67 JM |
8808 | |
8809 | if (type_die && ! TYPE_SIZE (type)) | |
8810 | return; | |
a082c85a | 8811 | |
71dfc51f | 8812 | if (TYPE_CONTEXT (type) != NULL_TREE |
a082c85a JM |
8813 | && TREE_CODE_CLASS (TREE_CODE (TYPE_CONTEXT (type))) == 't') |
8814 | nested = 1; | |
8815 | ||
a94dbf2c | 8816 | scope_die = scope_die_for (type, context_die); |
a082c85a JM |
8817 | |
8818 | if (! type_die || (nested && scope_die == comp_unit_die)) | |
273dbe67 | 8819 | /* First occurrence of type or toplevel definition of nested class. */ |
a3f97cbb | 8820 | { |
273dbe67 | 8821 | register dw_die_ref old_die = type_die; |
71dfc51f | 8822 | |
a3f97cbb JW |
8823 | type_die = new_die (TREE_CODE (type) == RECORD_TYPE |
8824 | ? DW_TAG_structure_type : DW_TAG_union_type, | |
a082c85a | 8825 | scope_die); |
a3f97cbb JW |
8826 | equate_type_number_to_die (type, type_die); |
8827 | add_name_attribute (type_die, type_tag (type)); | |
273dbe67 JM |
8828 | if (old_die) |
8829 | add_AT_die_ref (type_die, DW_AT_specification, old_die); | |
a3f97cbb | 8830 | } |
4b674448 | 8831 | else |
273dbe67 | 8832 | remove_AT (type_die, DW_AT_declaration); |
a3f97cbb | 8833 | |
a94dbf2c JM |
8834 | /* If we're not in the right context to be defining this type, defer to |
8835 | avoid tricky recursion. */ | |
8836 | if (TYPE_SIZE (type) && decl_scope_depth > 0 && scope_die == comp_unit_die) | |
8837 | { | |
8838 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
8839 | pend_type (type); | |
8840 | } | |
a3f97cbb JW |
8841 | /* If this type has been completed, then give it a byte_size attribute and |
8842 | then give a list of members. */ | |
a94dbf2c | 8843 | else if (TYPE_SIZE (type)) |
a3f97cbb JW |
8844 | { |
8845 | /* Prevent infinite recursion in cases where the type of some member of | |
8846 | this type is expressed in terms of this type itself. */ | |
8847 | TREE_ASM_WRITTEN (type) = 1; | |
273dbe67 | 8848 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 8849 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 8850 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 8851 | |
ef76d03b JW |
8852 | /* If the first reference to this type was as the return type of an |
8853 | inline function, then it may not have a parent. Fix this now. */ | |
8854 | if (type_die->die_parent == NULL) | |
8855 | add_child_die (scope_die, type_die); | |
8856 | ||
273dbe67 JM |
8857 | push_decl_scope (type); |
8858 | gen_member_die (type, type_die); | |
8859 | pop_decl_scope (); | |
71dfc51f | 8860 | |
a94dbf2c JM |
8861 | /* GNU extension: Record what type our vtable lives in. */ |
8862 | if (TYPE_VFIELD (type)) | |
8863 | { | |
8864 | tree vtype = DECL_FCONTEXT (TYPE_VFIELD (type)); | |
71dfc51f | 8865 | |
a94dbf2c JM |
8866 | gen_type_die (vtype, context_die); |
8867 | add_AT_die_ref (type_die, DW_AT_containing_type, | |
8868 | lookup_type_die (vtype)); | |
8869 | } | |
a3f97cbb | 8870 | } |
4b674448 JM |
8871 | else |
8872 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
8873 | } |
8874 | ||
8875 | /* Generate a DIE for a subroutine _type_. */ | |
71dfc51f | 8876 | |
a3f97cbb JW |
8877 | static void |
8878 | gen_subroutine_type_die (type, context_die) | |
8879 | register tree type; | |
8880 | register dw_die_ref context_die; | |
8881 | { | |
8882 | register tree return_type = TREE_TYPE (type); | |
71dfc51f RK |
8883 | register dw_die_ref subr_die |
8884 | = new_die (DW_TAG_subroutine_type, scope_die_for (type, context_die)); | |
8885 | ||
a3f97cbb JW |
8886 | equate_type_number_to_die (type, subr_die); |
8887 | add_prototyped_attribute (subr_die, type); | |
a3f97cbb | 8888 | add_type_attribute (subr_die, return_type, 0, 0, context_die); |
a94dbf2c | 8889 | gen_formal_types_die (type, subr_die); |
a3f97cbb JW |
8890 | } |
8891 | ||
8892 | /* Generate a DIE for a type definition */ | |
71dfc51f | 8893 | |
a3f97cbb JW |
8894 | static void |
8895 | gen_typedef_die (decl, context_die) | |
8896 | register tree decl; | |
8897 | register dw_die_ref context_die; | |
8898 | { | |
a3f97cbb | 8899 | register dw_die_ref type_die; |
a94dbf2c JM |
8900 | register tree origin; |
8901 | ||
8902 | if (TREE_ASM_WRITTEN (decl)) | |
8903 | return; | |
8904 | TREE_ASM_WRITTEN (decl) = 1; | |
8905 | ||
ab72d377 | 8906 | type_die = new_die (DW_TAG_typedef, scope_die_for (decl, context_die)); |
a94dbf2c | 8907 | origin = decl_ultimate_origin (decl); |
a3f97cbb | 8908 | if (origin != NULL) |
a94dbf2c | 8909 | add_abstract_origin_attribute (type_die, origin); |
a3f97cbb JW |
8910 | else |
8911 | { | |
a94dbf2c | 8912 | register tree type; |
a3f97cbb | 8913 | add_name_and_src_coords_attributes (type_die, decl); |
a94dbf2c JM |
8914 | if (DECL_ORIGINAL_TYPE (decl)) |
8915 | { | |
8916 | type = DECL_ORIGINAL_TYPE (decl); | |
8917 | equate_type_number_to_die (TREE_TYPE (decl), type_die); | |
8918 | } | |
8919 | else | |
8920 | type = TREE_TYPE (decl); | |
8921 | add_type_attribute (type_die, type, TREE_READONLY (decl), | |
8922 | TREE_THIS_VOLATILE (decl), context_die); | |
a3f97cbb | 8923 | } |
71dfc51f | 8924 | |
a3f97cbb | 8925 | if (DECL_ABSTRACT (decl)) |
a94dbf2c | 8926 | equate_decl_number_to_die (decl, type_die); |
a3f97cbb JW |
8927 | } |
8928 | ||
8929 | /* Generate a type description DIE. */ | |
71dfc51f | 8930 | |
a3f97cbb JW |
8931 | static void |
8932 | gen_type_die (type, context_die) | |
8933 | register tree type; | |
8934 | register dw_die_ref context_die; | |
8935 | { | |
71dfc51f RK |
8936 | if (type == NULL_TREE || type == error_mark_node) |
8937 | return; | |
a3f97cbb | 8938 | |
38e01259 | 8939 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
8940 | this type (i.e. without any const or volatile qualifiers) so get the |
8941 | main variant (i.e. the unqualified version) of this type now. */ | |
8942 | type = type_main_variant (type); | |
8943 | ||
8944 | if (TREE_ASM_WRITTEN (type)) | |
71dfc51f | 8945 | return; |
a3f97cbb | 8946 | |
a94dbf2c JM |
8947 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
8948 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
8949 | { | |
8950 | TREE_ASM_WRITTEN (type) = 1; | |
8951 | gen_decl_die (TYPE_NAME (type), context_die); | |
8952 | return; | |
8953 | } | |
8954 | ||
a3f97cbb JW |
8955 | switch (TREE_CODE (type)) |
8956 | { | |
8957 | case ERROR_MARK: | |
8958 | break; | |
8959 | ||
8960 | case POINTER_TYPE: | |
8961 | case REFERENCE_TYPE: | |
956d6950 JL |
8962 | /* We must set TREE_ASM_WRITTEN in case this is a recursive type. This |
8963 | ensures that the gen_type_die recursion will terminate even if the | |
8964 | type is recursive. Recursive types are possible in Ada. */ | |
8965 | /* ??? We could perhaps do this for all types before the switch | |
8966 | statement. */ | |
8967 | TREE_ASM_WRITTEN (type) = 1; | |
8968 | ||
a3f97cbb JW |
8969 | /* For these types, all that is required is that we output a DIE (or a |
8970 | set of DIEs) to represent the "basis" type. */ | |
8971 | gen_type_die (TREE_TYPE (type), context_die); | |
8972 | break; | |
8973 | ||
8974 | case OFFSET_TYPE: | |
71dfc51f RK |
8975 | /* This code is used for C++ pointer-to-data-member types. |
8976 | Output a description of the relevant class type. */ | |
a3f97cbb | 8977 | gen_type_die (TYPE_OFFSET_BASETYPE (type), context_die); |
71dfc51f | 8978 | |
a3f97cbb JW |
8979 | /* Output a description of the type of the object pointed to. */ |
8980 | gen_type_die (TREE_TYPE (type), context_die); | |
71dfc51f | 8981 | |
a3f97cbb JW |
8982 | /* Now output a DIE to represent this pointer-to-data-member type |
8983 | itself. */ | |
8984 | gen_ptr_to_mbr_type_die (type, context_die); | |
8985 | break; | |
8986 | ||
8987 | case SET_TYPE: | |
8988 | gen_type_die (TYPE_DOMAIN (type), context_die); | |
8989 | gen_set_type_die (type, context_die); | |
8990 | break; | |
8991 | ||
8992 | case FILE_TYPE: | |
8993 | gen_type_die (TREE_TYPE (type), context_die); | |
8994 | abort (); /* No way to represent these in Dwarf yet! */ | |
8995 | break; | |
8996 | ||
8997 | case FUNCTION_TYPE: | |
8998 | /* Force out return type (in case it wasn't forced out already). */ | |
8999 | gen_type_die (TREE_TYPE (type), context_die); | |
9000 | gen_subroutine_type_die (type, context_die); | |
9001 | break; | |
9002 | ||
9003 | case METHOD_TYPE: | |
9004 | /* Force out return type (in case it wasn't forced out already). */ | |
9005 | gen_type_die (TREE_TYPE (type), context_die); | |
9006 | gen_subroutine_type_die (type, context_die); | |
9007 | break; | |
9008 | ||
9009 | case ARRAY_TYPE: | |
9010 | if (TYPE_STRING_FLAG (type) && TREE_CODE (TREE_TYPE (type)) == CHAR_TYPE) | |
9011 | { | |
9012 | gen_type_die (TREE_TYPE (type), context_die); | |
9013 | gen_string_type_die (type, context_die); | |
9014 | } | |
9015 | else | |
71dfc51f | 9016 | gen_array_type_die (type, context_die); |
a3f97cbb JW |
9017 | break; |
9018 | ||
9019 | case ENUMERAL_TYPE: | |
9020 | case RECORD_TYPE: | |
9021 | case UNION_TYPE: | |
9022 | case QUAL_UNION_TYPE: | |
a082c85a JM |
9023 | /* If this is a nested type whose containing class hasn't been |
9024 | written out yet, writing it out will cover this one, too. */ | |
9025 | if (TYPE_CONTEXT (type) | |
9026 | && TREE_CODE_CLASS (TREE_CODE (TYPE_CONTEXT (type))) == 't' | |
9027 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) | |
a94dbf2c JM |
9028 | { |
9029 | gen_type_die (TYPE_CONTEXT (type), context_die); | |
9030 | ||
9031 | if (TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) | |
9032 | return; | |
9033 | ||
9034 | /* If that failed, attach ourselves to the stub. */ | |
9035 | push_decl_scope (TYPE_CONTEXT (type)); | |
9036 | context_die = lookup_type_die (TYPE_CONTEXT (type)); | |
9037 | } | |
9038 | ||
9039 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
273dbe67 | 9040 | gen_enumeration_type_die (type, context_die); |
a3f97cbb | 9041 | else |
273dbe67 | 9042 | gen_struct_or_union_type_die (type, context_die); |
4b674448 | 9043 | |
a94dbf2c JM |
9044 | if (TYPE_CONTEXT (type) |
9045 | && TREE_CODE_CLASS (TREE_CODE (TYPE_CONTEXT (type))) == 't' | |
9046 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) | |
9047 | pop_decl_scope (); | |
9048 | ||
4b674448 | 9049 | /* Don't set TREE_ASM_WRITTEN on an incomplete struct; we want to fix |
a082c85a JM |
9050 | it up if it is ever completed. gen_*_type_die will set it for us |
9051 | when appropriate. */ | |
9052 | return; | |
a3f97cbb JW |
9053 | |
9054 | case VOID_TYPE: | |
9055 | case INTEGER_TYPE: | |
9056 | case REAL_TYPE: | |
9057 | case COMPLEX_TYPE: | |
9058 | case BOOLEAN_TYPE: | |
9059 | case CHAR_TYPE: | |
9060 | /* No DIEs needed for fundamental types. */ | |
9061 | break; | |
9062 | ||
9063 | case LANG_TYPE: | |
9064 | /* No Dwarf representation currently defined. */ | |
9065 | break; | |
9066 | ||
9067 | default: | |
9068 | abort (); | |
9069 | } | |
9070 | ||
9071 | TREE_ASM_WRITTEN (type) = 1; | |
9072 | } | |
9073 | ||
9074 | /* Generate a DIE for a tagged type instantiation. */ | |
71dfc51f | 9075 | |
a3f97cbb JW |
9076 | static void |
9077 | gen_tagged_type_instantiation_die (type, context_die) | |
9078 | register tree type; | |
9079 | register dw_die_ref context_die; | |
9080 | { | |
71dfc51f RK |
9081 | if (type == NULL_TREE || type == error_mark_node) |
9082 | return; | |
a3f97cbb | 9083 | |
38e01259 | 9084 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
9085 | this type (i.e. without any const or volatile qualifiers) so make sure |
9086 | that we have the main variant (i.e. the unqualified version) of this | |
9087 | type now. */ | |
3a88cbd1 JL |
9088 | if (type != type_main_variant (type) |
9089 | || !TREE_ASM_WRITTEN (type)) | |
9090 | abort (); | |
a3f97cbb JW |
9091 | |
9092 | switch (TREE_CODE (type)) | |
9093 | { | |
9094 | case ERROR_MARK: | |
9095 | break; | |
9096 | ||
9097 | case ENUMERAL_TYPE: | |
9098 | gen_inlined_enumeration_type_die (type, context_die); | |
9099 | break; | |
9100 | ||
9101 | case RECORD_TYPE: | |
9102 | gen_inlined_structure_type_die (type, context_die); | |
9103 | break; | |
9104 | ||
9105 | case UNION_TYPE: | |
9106 | case QUAL_UNION_TYPE: | |
9107 | gen_inlined_union_type_die (type, context_die); | |
9108 | break; | |
9109 | ||
9110 | default: | |
71dfc51f | 9111 | abort (); |
a3f97cbb JW |
9112 | } |
9113 | } | |
9114 | ||
9115 | /* Generate a DW_TAG_lexical_block DIE followed by DIEs to represent all of the | |
9116 | things which are local to the given block. */ | |
71dfc51f | 9117 | |
a3f97cbb | 9118 | static void |
d7248bff | 9119 | gen_block_die (stmt, context_die, depth) |
a3f97cbb JW |
9120 | register tree stmt; |
9121 | register dw_die_ref context_die; | |
d7248bff | 9122 | int depth; |
a3f97cbb JW |
9123 | { |
9124 | register int must_output_die = 0; | |
9125 | register tree origin; | |
9126 | register tree decl; | |
9127 | register enum tree_code origin_code; | |
9128 | ||
9129 | /* Ignore blocks never really used to make RTL. */ | |
9130 | ||
71dfc51f RK |
9131 | if (stmt == NULL_TREE || !TREE_USED (stmt)) |
9132 | return; | |
a3f97cbb JW |
9133 | |
9134 | /* Determine the "ultimate origin" of this block. This block may be an | |
9135 | inlined instance of an inlined instance of inline function, so we have | |
9136 | to trace all of the way back through the origin chain to find out what | |
9137 | sort of node actually served as the original seed for the creation of | |
9138 | the current block. */ | |
9139 | origin = block_ultimate_origin (stmt); | |
9140 | origin_code = (origin != NULL) ? TREE_CODE (origin) : ERROR_MARK; | |
9141 | ||
9142 | /* Determine if we need to output any Dwarf DIEs at all to represent this | |
9143 | block. */ | |
9144 | if (origin_code == FUNCTION_DECL) | |
71dfc51f RK |
9145 | /* The outer scopes for inlinings *must* always be represented. We |
9146 | generate DW_TAG_inlined_subroutine DIEs for them. (See below.) */ | |
9147 | must_output_die = 1; | |
a3f97cbb JW |
9148 | else |
9149 | { | |
9150 | /* In the case where the current block represents an inlining of the | |
9151 | "body block" of an inline function, we must *NOT* output any DIE for | |
9152 | this block because we have already output a DIE to represent the | |
9153 | whole inlined function scope and the "body block" of any function | |
9154 | doesn't really represent a different scope according to ANSI C | |
9155 | rules. So we check here to make sure that this block does not | |
9156 | represent a "body block inlining" before trying to set the | |
9157 | `must_output_die' flag. */ | |
d7248bff | 9158 | if (! is_body_block (origin ? origin : stmt)) |
a3f97cbb JW |
9159 | { |
9160 | /* Determine if this block directly contains any "significant" | |
9161 | local declarations which we will need to output DIEs for. */ | |
9162 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
71dfc51f RK |
9163 | /* We are not in terse mode so *any* local declaration counts |
9164 | as being a "significant" one. */ | |
9165 | must_output_die = (BLOCK_VARS (stmt) != NULL); | |
a3f97cbb | 9166 | else |
71dfc51f RK |
9167 | /* We are in terse mode, so only local (nested) function |
9168 | definitions count as "significant" local declarations. */ | |
9169 | for (decl = BLOCK_VARS (stmt); | |
9170 | decl != NULL; decl = TREE_CHAIN (decl)) | |
9171 | if (TREE_CODE (decl) == FUNCTION_DECL | |
9172 | && DECL_INITIAL (decl)) | |
a3f97cbb | 9173 | { |
71dfc51f RK |
9174 | must_output_die = 1; |
9175 | break; | |
a3f97cbb | 9176 | } |
a3f97cbb JW |
9177 | } |
9178 | } | |
9179 | ||
9180 | /* It would be a waste of space to generate a Dwarf DW_TAG_lexical_block | |
9181 | DIE for any block which contains no significant local declarations at | |
9182 | all. Rather, in such cases we just call `decls_for_scope' so that any | |
9183 | needed Dwarf info for any sub-blocks will get properly generated. Note | |
9184 | that in terse mode, our definition of what constitutes a "significant" | |
9185 | local declaration gets restricted to include only inlined function | |
9186 | instances and local (nested) function definitions. */ | |
9187 | if (must_output_die) | |
9188 | { | |
9189 | if (origin_code == FUNCTION_DECL) | |
71dfc51f | 9190 | gen_inlined_subroutine_die (stmt, context_die, depth); |
a3f97cbb | 9191 | else |
71dfc51f | 9192 | gen_lexical_block_die (stmt, context_die, depth); |
a3f97cbb JW |
9193 | } |
9194 | else | |
d7248bff | 9195 | decls_for_scope (stmt, context_die, depth); |
a3f97cbb JW |
9196 | } |
9197 | ||
9198 | /* Generate all of the decls declared within a given scope and (recursively) | |
9ec36da5 | 9199 | all of its sub-blocks. */ |
71dfc51f | 9200 | |
a3f97cbb | 9201 | static void |
d7248bff | 9202 | decls_for_scope (stmt, context_die, depth) |
a3f97cbb JW |
9203 | register tree stmt; |
9204 | register dw_die_ref context_die; | |
d7248bff | 9205 | int depth; |
a3f97cbb JW |
9206 | { |
9207 | register tree decl; | |
9208 | register tree subblocks; | |
71dfc51f | 9209 | |
a3f97cbb | 9210 | /* Ignore blocks never really used to make RTL. */ |
71dfc51f RK |
9211 | if (stmt == NULL_TREE || ! TREE_USED (stmt)) |
9212 | return; | |
9213 | ||
d7248bff | 9214 | if (!BLOCK_ABSTRACT (stmt) && depth > 0) |
71dfc51f | 9215 | next_block_number++; |
a3f97cbb | 9216 | |
88dad228 JM |
9217 | /* Output the DIEs to represent all of the data objects and typedefs |
9218 | declared directly within this block but not within any nested | |
9219 | sub-blocks. Also, nested function and tag DIEs have been | |
9220 | generated with a parent of NULL; fix that up now. */ | |
a3f97cbb JW |
9221 | for (decl = BLOCK_VARS (stmt); |
9222 | decl != NULL; decl = TREE_CHAIN (decl)) | |
9223 | { | |
a94dbf2c JM |
9224 | register dw_die_ref die; |
9225 | ||
88dad228 | 9226 | if (TREE_CODE (decl) == FUNCTION_DECL) |
a94dbf2c | 9227 | die = lookup_decl_die (decl); |
88dad228 | 9228 | else if (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl)) |
a94dbf2c JM |
9229 | die = lookup_type_die (TREE_TYPE (decl)); |
9230 | else | |
9231 | die = NULL; | |
9232 | ||
71dfc51f | 9233 | if (die != NULL && die->die_parent == NULL) |
ef76d03b | 9234 | add_child_die (context_die, die); |
88dad228 JM |
9235 | else |
9236 | gen_decl_die (decl, context_die); | |
a3f97cbb JW |
9237 | } |
9238 | ||
9239 | /* Output the DIEs to represent all sub-blocks (and the items declared | |
9240 | therein) of this block. */ | |
9241 | for (subblocks = BLOCK_SUBBLOCKS (stmt); | |
9242 | subblocks != NULL; | |
9243 | subblocks = BLOCK_CHAIN (subblocks)) | |
71dfc51f | 9244 | gen_block_die (subblocks, context_die, depth + 1); |
a3f97cbb JW |
9245 | } |
9246 | ||
a94dbf2c | 9247 | /* Is this a typedef we can avoid emitting? */ |
71dfc51f RK |
9248 | |
9249 | static inline int | |
a94dbf2c JM |
9250 | is_redundant_typedef (decl) |
9251 | register tree decl; | |
9252 | { | |
9253 | if (TYPE_DECL_IS_STUB (decl)) | |
9254 | return 1; | |
71dfc51f | 9255 | |
a94dbf2c JM |
9256 | if (DECL_ARTIFICIAL (decl) |
9257 | && DECL_CONTEXT (decl) | |
9258 | && is_tagged_type (DECL_CONTEXT (decl)) | |
9259 | && TREE_CODE (TYPE_NAME (DECL_CONTEXT (decl))) == TYPE_DECL | |
9260 | && DECL_NAME (decl) == DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))) | |
9261 | /* Also ignore the artificial member typedef for the class name. */ | |
9262 | return 1; | |
71dfc51f | 9263 | |
a94dbf2c JM |
9264 | return 0; |
9265 | } | |
9266 | ||
a3f97cbb | 9267 | /* Generate Dwarf debug information for a decl described by DECL. */ |
71dfc51f | 9268 | |
a3f97cbb JW |
9269 | static void |
9270 | gen_decl_die (decl, context_die) | |
9271 | register tree decl; | |
9272 | register dw_die_ref context_die; | |
9273 | { | |
9274 | register tree origin; | |
71dfc51f | 9275 | |
a3f97cbb JW |
9276 | /* Make a note of the decl node we are going to be working on. We may need |
9277 | to give the user the source coordinates of where it appeared in case we | |
9278 | notice (later on) that something about it looks screwy. */ | |
9279 | dwarf_last_decl = decl; | |
9280 | ||
9281 | if (TREE_CODE (decl) == ERROR_MARK) | |
71dfc51f | 9282 | return; |
a3f97cbb JW |
9283 | |
9284 | /* If this ..._DECL node is marked to be ignored, then ignore it. But don't | |
9285 | ignore a function definition, since that would screw up our count of | |
38e01259 | 9286 | blocks, and that in turn will completely screw up the labels we will |
a3f97cbb JW |
9287 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for |
9288 | subsequent blocks). */ | |
9289 | if (DECL_IGNORED_P (decl) && TREE_CODE (decl) != FUNCTION_DECL) | |
71dfc51f | 9290 | return; |
a3f97cbb | 9291 | |
a3f97cbb JW |
9292 | switch (TREE_CODE (decl)) |
9293 | { | |
9294 | case CONST_DECL: | |
9295 | /* The individual enumerators of an enum type get output when we output | |
9296 | the Dwarf representation of the relevant enum type itself. */ | |
9297 | break; | |
9298 | ||
9299 | case FUNCTION_DECL: | |
4edb7b60 JM |
9300 | /* Don't output any DIEs to represent mere function declarations, |
9301 | unless they are class members or explicit block externs. */ | |
9302 | if (DECL_INITIAL (decl) == NULL_TREE && DECL_CONTEXT (decl) == NULL_TREE | |
9303 | && (current_function_decl == NULL_TREE || ! DECL_ARTIFICIAL (decl))) | |
71dfc51f | 9304 | break; |
bdb669cb | 9305 | |
4927276d | 9306 | if (debug_info_level > DINFO_LEVEL_TERSE) |
a94dbf2c JM |
9307 | { |
9308 | /* Before we describe the FUNCTION_DECL itself, make sure that we | |
9309 | have described its return type. */ | |
9310 | gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die); | |
9311 | ||
9312 | /* And its containing type. */ | |
9313 | origin = decl_class_context (decl); | |
71dfc51f | 9314 | if (origin != NULL_TREE) |
a94dbf2c JM |
9315 | gen_type_die (origin, context_die); |
9316 | ||
9317 | /* And its virtual context. */ | |
71dfc51f | 9318 | if (DECL_VINDEX (decl) != NULL_TREE) |
a94dbf2c JM |
9319 | gen_type_die (DECL_CONTEXT (decl), context_die); |
9320 | } | |
a3f97cbb JW |
9321 | |
9322 | /* Now output a DIE to represent the function itself. */ | |
9323 | gen_subprogram_die (decl, context_die); | |
9324 | break; | |
9325 | ||
9326 | case TYPE_DECL: | |
9327 | /* If we are in terse mode, don't generate any DIEs to represent any | |
4927276d | 9328 | actual typedefs. */ |
a3f97cbb | 9329 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 9330 | break; |
a3f97cbb | 9331 | |
5c90448c JM |
9332 | /* In the special case of a TYPE_DECL node representing the |
9333 | declaration of some type tag, if the given TYPE_DECL is marked as | |
a3f97cbb JW |
9334 | having been instantiated from some other (original) TYPE_DECL node |
9335 | (e.g. one which was generated within the original definition of an | |
9336 | inline function) we have to generate a special (abbreviated) | |
ef76d03b | 9337 | DW_TAG_structure_type, DW_TAG_union_type, or DW_TAG_enumeration_type |
a3f97cbb | 9338 | DIE here. */ |
71dfc51f | 9339 | if (TYPE_DECL_IS_STUB (decl) && DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE) |
a3f97cbb JW |
9340 | { |
9341 | gen_tagged_type_instantiation_die (TREE_TYPE (decl), context_die); | |
9342 | break; | |
9343 | } | |
a3f97cbb | 9344 | |
a94dbf2c JM |
9345 | if (is_redundant_typedef (decl)) |
9346 | gen_type_die (TREE_TYPE (decl), context_die); | |
9347 | else | |
71dfc51f RK |
9348 | /* Output a DIE to represent the typedef itself. */ |
9349 | gen_typedef_die (decl, context_die); | |
a3f97cbb JW |
9350 | break; |
9351 | ||
9352 | case LABEL_DECL: | |
9353 | if (debug_info_level >= DINFO_LEVEL_NORMAL) | |
71dfc51f | 9354 | gen_label_die (decl, context_die); |
a3f97cbb JW |
9355 | break; |
9356 | ||
9357 | case VAR_DECL: | |
9358 | /* If we are in terse mode, don't generate any DIEs to represent any | |
9359 | variable declarations or definitions. */ | |
9360 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 9361 | break; |
a3f97cbb JW |
9362 | |
9363 | /* Output any DIEs that are needed to specify the type of this data | |
9364 | object. */ | |
9365 | gen_type_die (TREE_TYPE (decl), context_die); | |
9366 | ||
a94dbf2c JM |
9367 | /* And its containing type. */ |
9368 | origin = decl_class_context (decl); | |
71dfc51f | 9369 | if (origin != NULL_TREE) |
a94dbf2c JM |
9370 | gen_type_die (origin, context_die); |
9371 | ||
a3f97cbb JW |
9372 | /* Now output the DIE to represent the data object itself. This gets |
9373 | complicated because of the possibility that the VAR_DECL really | |
9374 | represents an inlined instance of a formal parameter for an inline | |
9375 | function. */ | |
9376 | origin = decl_ultimate_origin (decl); | |
71dfc51f RK |
9377 | if (origin != NULL_TREE && TREE_CODE (origin) == PARM_DECL) |
9378 | gen_formal_parameter_die (decl, context_die); | |
a3f97cbb | 9379 | else |
71dfc51f | 9380 | gen_variable_die (decl, context_die); |
a3f97cbb JW |
9381 | break; |
9382 | ||
9383 | case FIELD_DECL: | |
a94dbf2c JM |
9384 | /* Ignore the nameless fields that are used to skip bits, but |
9385 | handle C++ anonymous unions. */ | |
71dfc51f RK |
9386 | if (DECL_NAME (decl) != NULL_TREE |
9387 | || TREE_CODE (TREE_TYPE (decl)) == UNION_TYPE) | |
a3f97cbb JW |
9388 | { |
9389 | gen_type_die (member_declared_type (decl), context_die); | |
9390 | gen_field_die (decl, context_die); | |
9391 | } | |
9392 | break; | |
9393 | ||
9394 | case PARM_DECL: | |
9395 | gen_type_die (TREE_TYPE (decl), context_die); | |
9396 | gen_formal_parameter_die (decl, context_die); | |
9397 | break; | |
9398 | ||
9399 | default: | |
9400 | abort (); | |
9401 | } | |
a3f97cbb JW |
9402 | } |
9403 | \f | |
71dfc51f RK |
9404 | /* Write the debugging output for DECL. */ |
9405 | ||
a3f97cbb | 9406 | void |
88dad228 | 9407 | dwarf2out_decl (decl) |
a3f97cbb | 9408 | register tree decl; |
a3f97cbb | 9409 | { |
88dad228 JM |
9410 | register dw_die_ref context_die = comp_unit_die; |
9411 | ||
a3f97cbb | 9412 | if (TREE_CODE (decl) == ERROR_MARK) |
71dfc51f | 9413 | return; |
a3f97cbb JW |
9414 | |
9415 | /* If this ..._DECL node is marked to be ignored, then ignore it. We gotta | |
9416 | hope that the node in question doesn't represent a function definition. | |
9417 | If it does, then totally ignoring it is bound to screw up our count of | |
38e01259 | 9418 | blocks, and that in turn will completely screw up the labels we will |
a3f97cbb JW |
9419 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for |
9420 | subsequent blocks). (It's too bad that BLOCK nodes don't carry their | |
9421 | own sequence numbers with them!) */ | |
9422 | if (DECL_IGNORED_P (decl)) | |
9423 | { | |
9424 | if (TREE_CODE (decl) == FUNCTION_DECL | |
02e24c7a | 9425 | && DECL_INITIAL (decl) != NULL) |
71dfc51f RK |
9426 | abort (); |
9427 | ||
a3f97cbb JW |
9428 | return; |
9429 | } | |
9430 | ||
9431 | switch (TREE_CODE (decl)) | |
9432 | { | |
9433 | case FUNCTION_DECL: | |
9434 | /* Ignore this FUNCTION_DECL if it refers to a builtin declaration of a | |
9435 | builtin function. Explicit programmer-supplied declarations of | |
9436 | these same functions should NOT be ignored however. */ | |
9437 | if (DECL_EXTERNAL (decl) && DECL_FUNCTION_CODE (decl)) | |
b1ccbc24 | 9438 | return; |
a3f97cbb JW |
9439 | |
9440 | /* What we would really like to do here is to filter out all mere | |
9441 | file-scope declarations of file-scope functions which are never | |
9442 | referenced later within this translation unit (and keep all of ones | |
956d6950 | 9443 | that *are* referenced later on) but we aren't clairvoyant, so we have |
a3f97cbb JW |
9444 | no idea which functions will be referenced in the future (i.e. later |
9445 | on within the current translation unit). So here we just ignore all | |
9446 | file-scope function declarations which are not also definitions. If | |
956d6950 | 9447 | and when the debugger needs to know something about these functions, |
a3f97cbb JW |
9448 | it wil have to hunt around and find the DWARF information associated |
9449 | with the definition of the function. Note that we can't just check | |
9450 | `DECL_EXTERNAL' to find out which FUNCTION_DECL nodes represent | |
9451 | definitions and which ones represent mere declarations. We have to | |
9452 | check `DECL_INITIAL' instead. That's because the C front-end | |
9453 | supports some weird semantics for "extern inline" function | |
9454 | definitions. These can get inlined within the current translation | |
9455 | unit (an thus, we need to generate DWARF info for their abstract | |
9456 | instances so that the DWARF info for the concrete inlined instances | |
9457 | can have something to refer to) but the compiler never generates any | |
9458 | out-of-lines instances of such things (despite the fact that they | |
9459 | *are* definitions). The important point is that the C front-end | |
9460 | marks these "extern inline" functions as DECL_EXTERNAL, but we need | |
273dbe67 | 9461 | to generate DWARF for them anyway. Note that the C++ front-end also |
a3f97cbb JW |
9462 | plays some similar games for inline function definitions appearing |
9463 | within include files which also contain | |
9464 | `#pragma interface' pragmas. */ | |
9465 | if (DECL_INITIAL (decl) == NULL_TREE) | |
b1ccbc24 | 9466 | return; |
88dad228 | 9467 | |
9c6cd30e JM |
9468 | /* If we're a nested function, initially use a parent of NULL; if we're |
9469 | a plain function, this will be fixed up in decls_for_scope. If | |
9470 | we're a method, it will be ignored, since we already have a DIE. */ | |
88dad228 | 9471 | if (decl_function_context (decl)) |
9c6cd30e | 9472 | context_die = NULL; |
88dad228 | 9473 | |
a3f97cbb JW |
9474 | break; |
9475 | ||
9476 | case VAR_DECL: | |
9477 | /* Ignore this VAR_DECL if it refers to a file-scope extern data object | |
9478 | declaration and if the declaration was never even referenced from | |
9479 | within this entire compilation unit. We suppress these DIEs in | |
9480 | order to save space in the .debug section (by eliminating entries | |
9481 | which are probably useless). Note that we must not suppress | |
9482 | block-local extern declarations (whether used or not) because that | |
9483 | would screw-up the debugger's name lookup mechanism and cause it to | |
9484 | miss things which really ought to be in scope at a given point. */ | |
9485 | if (DECL_EXTERNAL (decl) && !TREE_USED (decl)) | |
71dfc51f | 9486 | return; |
a3f97cbb JW |
9487 | |
9488 | /* If we are in terse mode, don't generate any DIEs to represent any | |
9489 | variable declarations or definitions. */ | |
9490 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 9491 | return; |
a3f97cbb JW |
9492 | break; |
9493 | ||
9494 | case TYPE_DECL: | |
9495 | /* Don't bother trying to generate any DIEs to represent any of the | |
a9d38797 JM |
9496 | normal built-in types for the language we are compiling. */ |
9497 | if (DECL_SOURCE_LINE (decl) == 0) | |
a94dbf2c JM |
9498 | { |
9499 | /* OK, we need to generate one for `bool' so GDB knows what type | |
9500 | comparisons have. */ | |
9501 | if ((get_AT_unsigned (comp_unit_die, DW_AT_language) | |
9502 | == DW_LANG_C_plus_plus) | |
9503 | && TREE_CODE (TREE_TYPE (decl)) == BOOLEAN_TYPE) | |
9504 | modified_type_die (TREE_TYPE (decl), 0, 0, NULL); | |
71dfc51f | 9505 | |
a94dbf2c JM |
9506 | return; |
9507 | } | |
a3f97cbb | 9508 | |
88dad228 | 9509 | /* If we are in terse mode, don't generate any DIEs for types. */ |
a3f97cbb | 9510 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 9511 | return; |
88dad228 JM |
9512 | |
9513 | /* If we're a function-scope tag, initially use a parent of NULL; | |
9514 | this will be fixed up in decls_for_scope. */ | |
9515 | if (decl_function_context (decl)) | |
3f76745e | 9516 | context_die = NULL; |
88dad228 | 9517 | |
a3f97cbb JW |
9518 | break; |
9519 | ||
9520 | default: | |
9521 | return; | |
9522 | } | |
9523 | ||
88dad228 | 9524 | gen_decl_die (decl, context_die); |
a94dbf2c | 9525 | output_pending_types_for_scope (comp_unit_die); |
a3f97cbb JW |
9526 | } |
9527 | ||
9528 | /* Output a marker (i.e. a label) for the beginning of the generated code for | |
9529 | a lexical block. */ | |
71dfc51f | 9530 | |
a3f97cbb | 9531 | void |
9a666dda | 9532 | dwarf2out_begin_block (blocknum) |
a3f97cbb JW |
9533 | register unsigned blocknum; |
9534 | { | |
a3f97cbb | 9535 | function_section (current_function_decl); |
5c90448c | 9536 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum); |
a3f97cbb JW |
9537 | } |
9538 | ||
9539 | /* Output a marker (i.e. a label) for the end of the generated code for a | |
9540 | lexical block. */ | |
71dfc51f | 9541 | |
a3f97cbb | 9542 | void |
9a666dda | 9543 | dwarf2out_end_block (blocknum) |
a3f97cbb JW |
9544 | register unsigned blocknum; |
9545 | { | |
a3f97cbb | 9546 | function_section (current_function_decl); |
5c90448c | 9547 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum); |
a3f97cbb JW |
9548 | } |
9549 | ||
9550 | /* Output a marker (i.e. a label) at a point in the assembly code which | |
9551 | corresponds to a given source level label. */ | |
71dfc51f | 9552 | |
a3f97cbb | 9553 | void |
9a666dda | 9554 | dwarf2out_label (insn) |
a3f97cbb JW |
9555 | register rtx insn; |
9556 | { | |
9557 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f | 9558 | |
a3f97cbb JW |
9559 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
9560 | { | |
9561 | function_section (current_function_decl); | |
5c90448c JM |
9562 | sprintf (label, INSN_LABEL_FMT, current_funcdef_number); |
9563 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, label, | |
9564 | (unsigned) INSN_UID (insn)); | |
a3f97cbb JW |
9565 | } |
9566 | } | |
9567 | ||
a3f97cbb | 9568 | /* Lookup a filename (in the list of filenames that we know about here in |
9a666dda | 9569 | dwarf2out.c) and return its "index". The index of each (known) filename is |
a3f97cbb JW |
9570 | just a unique number which is associated with only that one filename. |
9571 | We need such numbers for the sake of generating labels | |
9572 | (in the .debug_sfnames section) and references to those | |
9573 | files numbers (in the .debug_srcinfo and.debug_macinfo sections). | |
9574 | If the filename given as an argument is not found in our current list, | |
9575 | add it to the list and assign it the next available unique index number. | |
9576 | In order to speed up searches, we remember the index of the filename | |
9577 | was looked up last. This handles the majority of all searches. */ | |
71dfc51f | 9578 | |
a3f97cbb JW |
9579 | static unsigned |
9580 | lookup_filename (file_name) | |
9581 | char *file_name; | |
9582 | { | |
9583 | static unsigned last_file_lookup_index = 0; | |
a3f97cbb JW |
9584 | register unsigned i; |
9585 | ||
9586 | /* Check to see if the file name that was searched on the previous call | |
9587 | matches this file name. If so, return the index. */ | |
9588 | if (last_file_lookup_index != 0) | |
71dfc51f RK |
9589 | if (strcmp (file_name, file_table[last_file_lookup_index]) == 0) |
9590 | return last_file_lookup_index; | |
a3f97cbb JW |
9591 | |
9592 | /* Didn't match the previous lookup, search the table */ | |
9593 | for (i = 1; i < file_table_in_use; ++i) | |
71dfc51f RK |
9594 | if (strcmp (file_name, file_table[i]) == 0) |
9595 | { | |
9596 | last_file_lookup_index = i; | |
9597 | return i; | |
9598 | } | |
a3f97cbb JW |
9599 | |
9600 | /* Prepare to add a new table entry by making sure there is enough space in | |
9601 | the table to do so. If not, expand the current table. */ | |
9602 | if (file_table_in_use == file_table_allocated) | |
9603 | { | |
9604 | file_table_allocated += FILE_TABLE_INCREMENT; | |
9605 | file_table | |
71dfc51f RK |
9606 | = (char **) xrealloc (file_table, |
9607 | file_table_allocated * sizeof (char *)); | |
a3f97cbb JW |
9608 | } |
9609 | ||
71dfc51f | 9610 | /* Add the new entry to the end of the filename table. */ |
a3f97cbb JW |
9611 | file_table[file_table_in_use] = xstrdup (file_name); |
9612 | last_file_lookup_index = file_table_in_use++; | |
71dfc51f | 9613 | |
a3f97cbb JW |
9614 | return last_file_lookup_index; |
9615 | } | |
9616 | ||
9617 | /* Output a label to mark the beginning of a source code line entry | |
9618 | and record information relating to this source line, in | |
9619 | 'line_info_table' for later output of the .debug_line section. */ | |
71dfc51f | 9620 | |
a3f97cbb | 9621 | void |
9a666dda | 9622 | dwarf2out_line (filename, line) |
a3f97cbb JW |
9623 | register char *filename; |
9624 | register unsigned line; | |
9625 | { | |
a3f97cbb JW |
9626 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
9627 | { | |
9628 | function_section (current_function_decl); | |
a3f97cbb | 9629 | |
e90b62db | 9630 | if (DECL_SECTION_NAME (current_function_decl)) |
a3f97cbb | 9631 | { |
e90b62db | 9632 | register dw_separate_line_info_ref line_info; |
5c90448c JM |
9633 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, SEPARATE_LINE_CODE_LABEL, |
9634 | separate_line_info_table_in_use); | |
e90b62db JM |
9635 | fputc ('\n', asm_out_file); |
9636 | ||
9637 | /* expand the line info table if necessary */ | |
9638 | if (separate_line_info_table_in_use | |
9639 | == separate_line_info_table_allocated) | |
9640 | { | |
9641 | separate_line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
9642 | separate_line_info_table | |
71dfc51f RK |
9643 | = (dw_separate_line_info_ref) |
9644 | xrealloc (separate_line_info_table, | |
9645 | separate_line_info_table_allocated | |
9646 | * sizeof (dw_separate_line_info_entry)); | |
e90b62db | 9647 | } |
71dfc51f RK |
9648 | |
9649 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
9650 | line_info |
9651 | = &separate_line_info_table[separate_line_info_table_in_use++]; | |
9652 | line_info->dw_file_num = lookup_filename (filename); | |
9653 | line_info->dw_line_num = line; | |
9654 | line_info->function = current_funcdef_number; | |
9655 | } | |
9656 | else | |
9657 | { | |
9658 | register dw_line_info_ref line_info; | |
71dfc51f | 9659 | |
5c90448c JM |
9660 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, LINE_CODE_LABEL, |
9661 | line_info_table_in_use); | |
e90b62db JM |
9662 | fputc ('\n', asm_out_file); |
9663 | ||
71dfc51f | 9664 | /* Expand the line info table if necessary. */ |
e90b62db JM |
9665 | if (line_info_table_in_use == line_info_table_allocated) |
9666 | { | |
9667 | line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
9668 | line_info_table | |
71dfc51f RK |
9669 | = (dw_line_info_ref) |
9670 | xrealloc (line_info_table, | |
9671 | (line_info_table_allocated | |
9672 | * sizeof (dw_line_info_entry))); | |
e90b62db | 9673 | } |
71dfc51f RK |
9674 | |
9675 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
9676 | line_info = &line_info_table[line_info_table_in_use++]; |
9677 | line_info->dw_file_num = lookup_filename (filename); | |
9678 | line_info->dw_line_num = line; | |
a3f97cbb | 9679 | } |
a3f97cbb JW |
9680 | } |
9681 | } | |
9682 | ||
9683 | /* Record the beginning of a new source file, for later output | |
9684 | of the .debug_macinfo section. At present, unimplemented. */ | |
71dfc51f | 9685 | |
a3f97cbb | 9686 | void |
9a666dda | 9687 | dwarf2out_start_source_file (filename) |
487a6e06 | 9688 | register char *filename ATTRIBUTE_UNUSED; |
a3f97cbb JW |
9689 | { |
9690 | } | |
9691 | ||
9a666dda | 9692 | /* Record the end of a source file, for later output |
a3f97cbb | 9693 | of the .debug_macinfo section. At present, unimplemented. */ |
71dfc51f | 9694 | |
a3f97cbb | 9695 | void |
9a666dda | 9696 | dwarf2out_end_source_file () |
a3f97cbb JW |
9697 | { |
9698 | } | |
9699 | ||
9700 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
9701 | the tail part of the directive line, i.e. the part which is past the | |
9702 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 9703 | |
a3f97cbb | 9704 | void |
9a666dda | 9705 | dwarf2out_define (lineno, buffer) |
a3f97cbb JW |
9706 | register unsigned lineno; |
9707 | register char *buffer; | |
9708 | { | |
9709 | static int initialized = 0; | |
9710 | if (!initialized) | |
9711 | { | |
9a666dda | 9712 | dwarf2out_start_source_file (primary_filename); |
a3f97cbb JW |
9713 | initialized = 1; |
9714 | } | |
9715 | } | |
9716 | ||
9717 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
9718 | the tail part of the directive line, i.e. the part which is past the | |
9719 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 9720 | |
a3f97cbb | 9721 | void |
9a666dda | 9722 | dwarf2out_undef (lineno, buffer) |
487a6e06 KG |
9723 | register unsigned lineno ATTRIBUTE_UNUSED; |
9724 | register char *buffer ATTRIBUTE_UNUSED; | |
a3f97cbb JW |
9725 | { |
9726 | } | |
9727 | ||
9728 | /* Set up for Dwarf output at the start of compilation. */ | |
71dfc51f | 9729 | |
a3f97cbb | 9730 | void |
9a666dda | 9731 | dwarf2out_init (asm_out_file, main_input_filename) |
a3f97cbb JW |
9732 | register FILE *asm_out_file; |
9733 | register char *main_input_filename; | |
9734 | { | |
a3f97cbb JW |
9735 | /* Remember the name of the primary input file. */ |
9736 | primary_filename = main_input_filename; | |
9737 | ||
9738 | /* Allocate the initial hunk of the file_table. */ | |
9739 | file_table = (char **) xmalloc (FILE_TABLE_INCREMENT * sizeof (char *)); | |
b1ccbc24 | 9740 | bzero ((char *) file_table, FILE_TABLE_INCREMENT * sizeof (char *)); |
a3f97cbb | 9741 | file_table_allocated = FILE_TABLE_INCREMENT; |
71dfc51f RK |
9742 | |
9743 | /* Skip the first entry - file numbers begin at 1. */ | |
a3f97cbb JW |
9744 | file_table_in_use = 1; |
9745 | ||
a3f97cbb JW |
9746 | /* Allocate the initial hunk of the decl_die_table. */ |
9747 | decl_die_table | |
9748 | = (dw_die_ref *) xmalloc (DECL_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
b1ccbc24 RK |
9749 | bzero ((char *) decl_die_table, |
9750 | DECL_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
a3f97cbb JW |
9751 | decl_die_table_allocated = DECL_DIE_TABLE_INCREMENT; |
9752 | decl_die_table_in_use = 0; | |
9753 | ||
9754 | /* Allocate the initial hunk of the decl_scope_table. */ | |
9755 | decl_scope_table | |
e3e7774e JW |
9756 | = (decl_scope_node *) xmalloc (DECL_SCOPE_TABLE_INCREMENT |
9757 | * sizeof (decl_scope_node)); | |
b1ccbc24 | 9758 | bzero ((char *) decl_scope_table, |
e3e7774e | 9759 | DECL_SCOPE_TABLE_INCREMENT * sizeof (decl_scope_node)); |
a3f97cbb JW |
9760 | decl_scope_table_allocated = DECL_SCOPE_TABLE_INCREMENT; |
9761 | decl_scope_depth = 0; | |
9762 | ||
9763 | /* Allocate the initial hunk of the abbrev_die_table. */ | |
9764 | abbrev_die_table | |
9765 | = (dw_die_ref *) xmalloc (ABBREV_DIE_TABLE_INCREMENT | |
9766 | * sizeof (dw_die_ref)); | |
b1ccbc24 RK |
9767 | bzero ((char *) abbrev_die_table, |
9768 | ABBREV_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
a3f97cbb | 9769 | abbrev_die_table_allocated = ABBREV_DIE_TABLE_INCREMENT; |
71dfc51f | 9770 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
9771 | abbrev_die_table_in_use = 1; |
9772 | ||
9773 | /* Allocate the initial hunk of the line_info_table. */ | |
9774 | line_info_table | |
9775 | = (dw_line_info_ref) xmalloc (LINE_INFO_TABLE_INCREMENT | |
9776 | * sizeof (dw_line_info_entry)); | |
b1ccbc24 RK |
9777 | bzero ((char *) line_info_table, |
9778 | LINE_INFO_TABLE_INCREMENT * sizeof (dw_line_info_entry)); | |
a3f97cbb | 9779 | line_info_table_allocated = LINE_INFO_TABLE_INCREMENT; |
71dfc51f | 9780 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
9781 | line_info_table_in_use = 1; |
9782 | ||
a3f97cbb JW |
9783 | /* Generate the initial DIE for the .debug section. Note that the (string) |
9784 | value given in the DW_AT_name attribute of the DW_TAG_compile_unit DIE | |
9785 | will (typically) be a relative pathname and that this pathname should be | |
9786 | taken as being relative to the directory from which the compiler was | |
9787 | invoked when the given (base) source file was compiled. */ | |
9788 | gen_compile_unit_die (main_input_filename); | |
9789 | ||
5c90448c | 9790 | ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0); |
a3f97cbb JW |
9791 | } |
9792 | ||
9793 | /* Output stuff that dwarf requires at the end of every file, | |
9794 | and generate the DWARF-2 debugging info. */ | |
71dfc51f | 9795 | |
a3f97cbb | 9796 | void |
9a666dda | 9797 | dwarf2out_finish () |
a3f97cbb | 9798 | { |
ef76d03b JW |
9799 | limbo_die_node *node, *next_node; |
9800 | dw_die_ref die; | |
9801 | dw_attr_ref a; | |
9802 | ||
9803 | /* Traverse the limbo die list, and add parent/child links. The only | |
9804 | dies without parents that should be here are concrete instances of | |
9805 | inline functions, and the comp_unit_die. We can ignore the comp_unit_die. | |
9806 | For concrete instances, we can get the parent die from the abstract | |
9807 | instance. */ | |
9808 | for (node = limbo_die_list; node; node = next_node) | |
9809 | { | |
9810 | next_node = node->next; | |
9811 | die = node->die; | |
9812 | ||
9813 | if (die->die_parent == NULL) | |
9814 | { | |
9815 | a = get_AT (die, DW_AT_abstract_origin); | |
9816 | if (a) | |
9817 | add_child_die (a->dw_attr_val.v.val_die_ref->die_parent, die); | |
9818 | else if (die == comp_unit_die) | |
9819 | ; | |
9820 | else | |
9821 | abort (); | |
9822 | } | |
9823 | free (node); | |
9824 | } | |
9825 | ||
a3f97cbb JW |
9826 | /* Traverse the DIE tree and add sibling attributes to those DIE's |
9827 | that have children. */ | |
9828 | add_sibling_attributes (comp_unit_die); | |
9829 | ||
9830 | /* Output a terminator label for the .text section. */ | |
9831 | fputc ('\n', asm_out_file); | |
9832 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
5c90448c | 9833 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, TEXT_END_LABEL, 0); |
a3f97cbb | 9834 | |
bdb669cb | 9835 | #if 0 |
a3f97cbb JW |
9836 | /* Output a terminator label for the .data section. */ |
9837 | fputc ('\n', asm_out_file); | |
9838 | ASM_OUTPUT_SECTION (asm_out_file, DATA_SECTION); | |
5c90448c | 9839 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, DATA_END_LABEL, 0); |
a3f97cbb JW |
9840 | |
9841 | /* Output a terminator label for the .bss section. */ | |
9842 | fputc ('\n', asm_out_file); | |
9843 | ASM_OUTPUT_SECTION (asm_out_file, BSS_SECTION); | |
5c90448c | 9844 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BSS_END_LABEL, 0); |
bdb669cb | 9845 | #endif |
a3f97cbb | 9846 | |
e90b62db JM |
9847 | /* Output the source line correspondence table. */ |
9848 | if (line_info_table_in_use > 1 || separate_line_info_table_in_use) | |
9849 | { | |
9850 | fputc ('\n', asm_out_file); | |
c53aa195 | 9851 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION); |
e90b62db JM |
9852 | output_line_info (); |
9853 | ||
9854 | /* We can only use the low/high_pc attributes if all of the code | |
9855 | was in .text. */ | |
9856 | if (separate_line_info_table_in_use == 0) | |
9857 | { | |
71208e03 JW |
9858 | add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, |
9859 | stripattributes (TEXT_SECTION)); | |
5c90448c | 9860 | add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label); |
e90b62db | 9861 | } |
71dfc51f | 9862 | |
1553e85a | 9863 | add_AT_section_offset (comp_unit_die, DW_AT_stmt_list, DEBUG_LINE_SECTION); |
e90b62db JM |
9864 | } |
9865 | ||
a3f97cbb JW |
9866 | /* Output the abbreviation table. */ |
9867 | fputc ('\n', asm_out_file); | |
9868 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
9869 | build_abbrev_table (comp_unit_die); | |
9870 | output_abbrev_section (); | |
9871 | ||
a3f97cbb JW |
9872 | /* Initialize the beginning DIE offset - and calculate sizes/offsets. */ |
9873 | next_die_offset = DWARF_COMPILE_UNIT_HEADER_SIZE; | |
9874 | calc_die_sizes (comp_unit_die); | |
9875 | ||
a3f97cbb JW |
9876 | /* Output debugging information. */ |
9877 | fputc ('\n', asm_out_file); | |
c53aa195 | 9878 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_INFO_SECTION); |
a3f97cbb JW |
9879 | output_compilation_unit_header (); |
9880 | output_die (comp_unit_die); | |
9881 | ||
d291dd49 JM |
9882 | if (pubname_table_in_use) |
9883 | { | |
9884 | /* Output public names table. */ | |
9885 | fputc ('\n', asm_out_file); | |
9886 | ASM_OUTPUT_SECTION (asm_out_file, PUBNAMES_SECTION); | |
9887 | output_pubnames (); | |
9888 | } | |
9889 | ||
a3f97cbb JW |
9890 | if (fde_table_in_use) |
9891 | { | |
a3f97cbb JW |
9892 | /* Output the address range information. */ |
9893 | fputc ('\n', asm_out_file); | |
9894 | ASM_OUTPUT_SECTION (asm_out_file, ARANGES_SECTION); | |
9895 | output_aranges (); | |
9896 | } | |
9897 | } | |
9a666dda | 9898 | #endif /* DWARF2_DEBUGGING_INFO */ |