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a3f97cbb | 1 | /* Output Dwarf2 format symbol table information from the GNU C compiler. |
06ceef4e RK |
2 | Copyright (C) 1992, 1993, 1995, 1996, 1997, 1998, 1999, 2000 |
3 | Free Software Foundation, Inc. | |
e9a25f70 JL |
4 | Contributed by Gary Funck (gary@intrepid.com). |
5 | Derived from DWARF 1 implementation of Ron Guilmette (rfg@monkeys.com). | |
469ac993 | 6 | Extensively modified by Jason Merrill (jason@cygnus.com). |
a3f97cbb JW |
7 | |
8 | This file is part of GNU CC. | |
9 | ||
10 | GNU CC is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2, or (at your option) | |
13 | any later version. | |
14 | ||
15 | GNU CC is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with GNU CC; see the file COPYING. If not, write to | |
5f38fdda JL |
22 | the Free Software Foundation, 59 Temple Place - Suite 330, |
23 | Boston, MA 02111-1307, USA. */ | |
a3f97cbb | 24 | |
a96c67ec | 25 | /* TODO: Implement .debug_str handling, and share entries somehow. |
348bb3c7 JM |
26 | Eliminate duplicates by putting common info in a separate section |
27 | to be collected by the linker and referring to it with | |
28 | DW_FORM_ref_addr. | |
29 | Emit .debug_line header even when there are no functions, since | |
30 | the file numbers are used by .debug_info. Alternately, leave | |
31 | out locations for types and decls. | |
32 | Avoid talking about ctors and op= for PODs. | |
33 | Factor out common prologue sequences into multiple CIEs. */ | |
34 | ||
3f76745e JM |
35 | /* The first part of this file deals with the DWARF 2 frame unwind |
36 | information, which is also used by the GCC efficient exception handling | |
37 | mechanism. The second part, controlled only by an #ifdef | |
38 | DWARF2_DEBUGGING_INFO, deals with the other DWARF 2 debugging | |
39 | information. */ | |
40 | ||
0021b564 | 41 | #include "config.h" |
670ee920 | 42 | #include "system.h" |
0021b564 | 43 | #include "defaults.h" |
a3f97cbb JW |
44 | #include "tree.h" |
45 | #include "flags.h" | |
46 | #include "rtl.h" | |
47 | #include "hard-reg-set.h" | |
48 | #include "regs.h" | |
49 | #include "insn-config.h" | |
50 | #include "reload.h" | |
51 | #include "output.h" | |
71dfc51f | 52 | #include "expr.h" |
3f76745e | 53 | #include "except.h" |
a7cc7f29 | 54 | #include "dwarf2.h" |
76ead72b | 55 | #include "dwarf2out.h" |
10f0ad3d | 56 | #include "toplev.h" |
1865dbb5 | 57 | #include "varray.h" |
951a525f | 58 | #include "ggc.h" |
57bed152 | 59 | #include "tm_p.h" |
a3f97cbb | 60 | |
c85f7c16 JL |
61 | /* We cannot use <assert.h> in GCC source, since that would include |
62 | GCC's assert.h, which may not be compatible with the host compiler. */ | |
63 | #undef assert | |
64 | #ifdef NDEBUG | |
65 | # define assert(e) | |
66 | #else | |
67 | # define assert(e) do { if (! (e)) abort (); } while (0) | |
68 | #endif | |
69 | ||
0021b564 JM |
70 | /* Decide whether we want to emit frame unwind information for the current |
71 | translation unit. */ | |
72 | ||
73 | int | |
74 | dwarf2out_do_frame () | |
75 | { | |
76 | return (write_symbols == DWARF2_DEBUG | |
9ec36da5 JL |
77 | #ifdef DWARF2_FRAME_INFO |
78 | || DWARF2_FRAME_INFO | |
79 | #endif | |
0021b564 | 80 | #ifdef DWARF2_UNWIND_INFO |
14a774a9 | 81 | || flag_unwind_tables |
0021b564 JM |
82 | || (flag_exceptions && ! exceptions_via_longjmp) |
83 | #endif | |
84 | ); | |
85 | } | |
86 | ||
87 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) | |
88 | ||
eaf95893 RK |
89 | /* How to start an assembler comment. */ |
90 | #ifndef ASM_COMMENT_START | |
91 | #define ASM_COMMENT_START ";#" | |
92 | #endif | |
93 | ||
a3f97cbb JW |
94 | typedef struct dw_cfi_struct *dw_cfi_ref; |
95 | typedef struct dw_fde_struct *dw_fde_ref; | |
96 | typedef union dw_cfi_oprnd_struct *dw_cfi_oprnd_ref; | |
a3f97cbb JW |
97 | |
98 | /* Call frames are described using a sequence of Call Frame | |
99 | Information instructions. The register number, offset | |
100 | and address fields are provided as possible operands; | |
101 | their use is selected by the opcode field. */ | |
71dfc51f | 102 | |
a3f97cbb | 103 | typedef union dw_cfi_oprnd_struct |
71dfc51f RK |
104 | { |
105 | unsigned long dw_cfi_reg_num; | |
106 | long int dw_cfi_offset; | |
107 | char *dw_cfi_addr; | |
108 | } | |
a3f97cbb JW |
109 | dw_cfi_oprnd; |
110 | ||
111 | typedef struct dw_cfi_struct | |
71dfc51f RK |
112 | { |
113 | dw_cfi_ref dw_cfi_next; | |
114 | enum dwarf_call_frame_info dw_cfi_opc; | |
115 | dw_cfi_oprnd dw_cfi_oprnd1; | |
116 | dw_cfi_oprnd dw_cfi_oprnd2; | |
117 | } | |
a3f97cbb JW |
118 | dw_cfi_node; |
119 | ||
120 | /* All call frame descriptions (FDE's) in the GCC generated DWARF | |
4b674448 | 121 | refer to a single Common Information Entry (CIE), defined at |
a3f97cbb JW |
122 | the beginning of the .debug_frame section. This used of a single |
123 | CIE obviates the need to keep track of multiple CIE's | |
124 | in the DWARF generation routines below. */ | |
71dfc51f | 125 | |
a3f97cbb | 126 | typedef struct dw_fde_struct |
71dfc51f | 127 | { |
71dfc51f RK |
128 | char *dw_fde_begin; |
129 | char *dw_fde_current_label; | |
130 | char *dw_fde_end; | |
131 | dw_cfi_ref dw_fde_cfi; | |
132 | } | |
a3f97cbb JW |
133 | dw_fde_node; |
134 | ||
a3f97cbb JW |
135 | /* Maximum size (in bytes) of an artificially generated label. */ |
136 | #define MAX_ARTIFICIAL_LABEL_BYTES 30 | |
137 | ||
138 | /* Make sure we know the sizes of the various types dwarf can describe. These | |
139 | are only defaults. If the sizes are different for your target, you should | |
140 | override these values by defining the appropriate symbols in your tm.h | |
141 | file. */ | |
71dfc51f | 142 | |
a3f97cbb JW |
143 | #ifndef CHAR_TYPE_SIZE |
144 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
145 | #endif | |
a3f97cbb | 146 | #ifndef PTR_SIZE |
a9d38797 | 147 | #define PTR_SIZE (POINTER_SIZE / BITS_PER_UNIT) |
a3f97cbb JW |
148 | #endif |
149 | ||
7e23cb16 JM |
150 | /* The size in bytes of a DWARF field indicating an offset or length |
151 | relative to a debug info section, specified to be 4 bytes in the DWARF-2 | |
152 | specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */ | |
71dfc51f | 153 | |
7e23cb16 JM |
154 | #ifndef DWARF_OFFSET_SIZE |
155 | #define DWARF_OFFSET_SIZE 4 | |
156 | #endif | |
157 | ||
9a666dda JM |
158 | #define DWARF_VERSION 2 |
159 | ||
7e23cb16 JM |
160 | /* Round SIZE up to the nearest BOUNDARY. */ |
161 | #define DWARF_ROUND(SIZE,BOUNDARY) \ | |
162 | (((SIZE) + (BOUNDARY) - 1) & ~((BOUNDARY) - 1)) | |
a3f97cbb | 163 | |
a3f97cbb | 164 | /* Offsets recorded in opcodes are a multiple of this alignment factor. */ |
469ac993 JM |
165 | #ifdef STACK_GROWS_DOWNWARD |
166 | #define DWARF_CIE_DATA_ALIGNMENT (-UNITS_PER_WORD) | |
167 | #else | |
168 | #define DWARF_CIE_DATA_ALIGNMENT UNITS_PER_WORD | |
169 | #endif | |
a3f97cbb | 170 | |
3f76745e JM |
171 | /* A pointer to the base of a table that contains frame description |
172 | information for each routine. */ | |
173 | static dw_fde_ref fde_table; | |
a3f97cbb | 174 | |
3f76745e JM |
175 | /* Number of elements currently allocated for fde_table. */ |
176 | static unsigned fde_table_allocated; | |
a94dbf2c | 177 | |
3f76745e JM |
178 | /* Number of elements in fde_table currently in use. */ |
179 | static unsigned fde_table_in_use; | |
a3f97cbb | 180 | |
3f76745e JM |
181 | /* Size (in elements) of increments by which we may expand the |
182 | fde_table. */ | |
183 | #define FDE_TABLE_INCREMENT 256 | |
a3f97cbb | 184 | |
a94dbf2c JM |
185 | /* A list of call frame insns for the CIE. */ |
186 | static dw_cfi_ref cie_cfi_head; | |
187 | ||
a3f97cbb JW |
188 | /* The number of the current function definition for which debugging |
189 | information is being generated. These numbers range from 1 up to the | |
190 | maximum number of function definitions contained within the current | |
191 | compilation unit. These numbers are used to create unique label id's | |
192 | unique to each function definition. */ | |
4f988ea2 | 193 | static unsigned current_funcdef_number = 0; |
a3f97cbb JW |
194 | |
195 | /* Some DWARF extensions (e.g., MIPS/SGI) implement a subprogram | |
196 | attribute that accelerates the lookup of the FDE associated | |
197 | with the subprogram. This variable holds the table index of the FDE | |
198 | associated with the current function (body) definition. */ | |
199 | static unsigned current_funcdef_fde; | |
200 | ||
a3f97cbb | 201 | /* Forward declarations for functions defined in this file. */ |
71dfc51f | 202 | |
83d2b3b9 KG |
203 | static char *stripattributes PARAMS ((const char *)); |
204 | static const char *dwarf_cfi_name PARAMS ((unsigned)); | |
205 | static dw_cfi_ref new_cfi PARAMS ((void)); | |
206 | static void add_cfi PARAMS ((dw_cfi_ref *, dw_cfi_ref)); | |
207 | static unsigned long size_of_uleb128 PARAMS ((unsigned long)); | |
208 | static unsigned long size_of_sleb128 PARAMS ((long)); | |
209 | static void output_uleb128 PARAMS ((unsigned long)); | |
210 | static void output_sleb128 PARAMS ((long)); | |
211 | static void add_fde_cfi PARAMS ((char *, dw_cfi_ref)); | |
212 | static void lookup_cfa_1 PARAMS ((dw_cfi_ref, unsigned long *, | |
213 | long *)); | |
214 | static void lookup_cfa PARAMS ((unsigned long *, long *)); | |
215 | static void reg_save PARAMS ((char *, unsigned, unsigned, | |
216 | long)); | |
217 | static void initial_return_save PARAMS ((rtx)); | |
218 | static void output_cfi PARAMS ((dw_cfi_ref, dw_fde_ref)); | |
219 | static void output_call_frame_info PARAMS ((int)); | |
220 | static unsigned reg_number PARAMS ((rtx)); | |
221 | static void dwarf2out_stack_adjust PARAMS ((rtx)); | |
222 | static void dwarf2out_frame_debug_expr PARAMS ((rtx, char *)); | |
a3f97cbb JW |
223 | |
224 | /* Definitions of defaults for assembler-dependent names of various | |
225 | pseudo-ops and section names. | |
226 | Theses may be overridden in the tm.h file (if necessary) for a particular | |
227 | assembler. */ | |
71dfc51f | 228 | |
0021b564 | 229 | #ifdef OBJECT_FORMAT_ELF |
a3f97cbb JW |
230 | #ifndef UNALIGNED_SHORT_ASM_OP |
231 | #define UNALIGNED_SHORT_ASM_OP ".2byte" | |
232 | #endif | |
233 | #ifndef UNALIGNED_INT_ASM_OP | |
234 | #define UNALIGNED_INT_ASM_OP ".4byte" | |
235 | #endif | |
7e23cb16 JM |
236 | #ifndef UNALIGNED_DOUBLE_INT_ASM_OP |
237 | #define UNALIGNED_DOUBLE_INT_ASM_OP ".8byte" | |
238 | #endif | |
0021b564 JM |
239 | #endif /* OBJECT_FORMAT_ELF */ |
240 | ||
a3f97cbb JW |
241 | #ifndef ASM_BYTE_OP |
242 | #define ASM_BYTE_OP ".byte" | |
243 | #endif | |
244 | ||
7e23cb16 JM |
245 | /* Data and reference forms for relocatable data. */ |
246 | #define DW_FORM_data (DWARF_OFFSET_SIZE == 8 ? DW_FORM_data8 : DW_FORM_data4) | |
247 | #define DW_FORM_ref (DWARF_OFFSET_SIZE == 8 ? DW_FORM_ref8 : DW_FORM_ref4) | |
248 | ||
a3f97cbb JW |
249 | /* Pseudo-op for defining a new section. */ |
250 | #ifndef SECTION_ASM_OP | |
251 | #define SECTION_ASM_OP ".section" | |
252 | #endif | |
253 | ||
254 | /* The default format used by the ASM_OUTPUT_SECTION macro (see below) to | |
255 | print the SECTION_ASM_OP and the section name. The default here works for | |
256 | almost all svr4 assemblers, except for the sparc, where the section name | |
257 | must be enclosed in double quotes. (See sparcv4.h). */ | |
258 | #ifndef SECTION_FORMAT | |
c53aa195 JM |
259 | #ifdef PUSHSECTION_FORMAT |
260 | #define SECTION_FORMAT PUSHSECTION_FORMAT | |
261 | #else | |
262 | #define SECTION_FORMAT "\t%s\t%s\n" | |
263 | #endif | |
a3f97cbb JW |
264 | #endif |
265 | ||
a3f97cbb JW |
266 | #ifndef FRAME_SECTION |
267 | #define FRAME_SECTION ".debug_frame" | |
268 | #endif | |
a3f97cbb | 269 | |
5c90448c JM |
270 | #ifndef FUNC_BEGIN_LABEL |
271 | #define FUNC_BEGIN_LABEL "LFB" | |
a3f97cbb | 272 | #endif |
5c90448c JM |
273 | #ifndef FUNC_END_LABEL |
274 | #define FUNC_END_LABEL "LFE" | |
a3f97cbb | 275 | #endif |
a6ab3aad JM |
276 | #define CIE_AFTER_SIZE_LABEL "LSCIE" |
277 | #define CIE_END_LABEL "LECIE" | |
2ed2af28 | 278 | #define CIE_LENGTH_LABEL "LLCIE" |
a6ab3aad JM |
279 | #define FDE_AFTER_SIZE_LABEL "LSFDE" |
280 | #define FDE_END_LABEL "LEFDE" | |
2ed2af28 | 281 | #define FDE_LENGTH_LABEL "LLFDE" |
a3f97cbb | 282 | |
a3f97cbb JW |
283 | /* Definitions of defaults for various types of primitive assembly language |
284 | output operations. These may be overridden from within the tm.h file, | |
956d6950 | 285 | but typically, that is unnecessary. */ |
71dfc51f | 286 | |
a3f97cbb JW |
287 | #ifndef ASM_OUTPUT_SECTION |
288 | #define ASM_OUTPUT_SECTION(FILE, SECTION) \ | |
289 | fprintf ((FILE), SECTION_FORMAT, SECTION_ASM_OP, SECTION) | |
290 | #endif | |
291 | ||
0021b564 JM |
292 | #ifndef ASM_OUTPUT_DWARF_DATA1 |
293 | #define ASM_OUTPUT_DWARF_DATA1(FILE,VALUE) \ | |
32bd96ff | 294 | fprintf ((FILE), "\t%s\t0x%x", ASM_BYTE_OP, (unsigned) (VALUE)) |
0021b564 JM |
295 | #endif |
296 | ||
bb727b5a JM |
297 | #ifndef ASM_OUTPUT_DWARF_DELTA1 |
298 | #define ASM_OUTPUT_DWARF_DELTA1(FILE,LABEL1,LABEL2) \ | |
299 | do { fprintf ((FILE), "\t%s\t", ASM_BYTE_OP); \ | |
300 | assemble_name (FILE, LABEL1); \ | |
301 | fprintf (FILE, "-"); \ | |
302 | assemble_name (FILE, LABEL2); \ | |
303 | } while (0) | |
304 | #endif | |
305 | ||
0021b564 JM |
306 | #ifdef UNALIGNED_INT_ASM_OP |
307 | ||
308 | #ifndef UNALIGNED_OFFSET_ASM_OP | |
309 | #define UNALIGNED_OFFSET_ASM_OP \ | |
310 | (DWARF_OFFSET_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
311 | #endif | |
312 | ||
313 | #ifndef UNALIGNED_WORD_ASM_OP | |
314 | #define UNALIGNED_WORD_ASM_OP \ | |
315 | (PTR_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
316 | #endif | |
317 | ||
a3f97cbb JW |
318 | #ifndef ASM_OUTPUT_DWARF_DELTA2 |
319 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
320 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_SHORT_ASM_OP); \ | |
321 | assemble_name (FILE, LABEL1); \ | |
322 | fprintf (FILE, "-"); \ | |
323 | assemble_name (FILE, LABEL2); \ | |
324 | } while (0) | |
325 | #endif | |
326 | ||
327 | #ifndef ASM_OUTPUT_DWARF_DELTA4 | |
328 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
329 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
330 | assemble_name (FILE, LABEL1); \ | |
331 | fprintf (FILE, "-"); \ | |
332 | assemble_name (FILE, LABEL2); \ | |
333 | } while (0) | |
334 | #endif | |
335 | ||
7e23cb16 JM |
336 | #ifndef ASM_OUTPUT_DWARF_DELTA |
337 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
338 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
339 | assemble_name (FILE, LABEL1); \ | |
340 | fprintf (FILE, "-"); \ | |
341 | assemble_name (FILE, LABEL2); \ | |
342 | } while (0) | |
343 | #endif | |
344 | ||
345 | #ifndef ASM_OUTPUT_DWARF_ADDR_DELTA | |
346 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
347 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ | |
348 | assemble_name (FILE, LABEL1); \ | |
349 | fprintf (FILE, "-"); \ | |
350 | assemble_name (FILE, LABEL2); \ | |
351 | } while (0) | |
352 | #endif | |
353 | ||
a3f97cbb JW |
354 | #ifndef ASM_OUTPUT_DWARF_ADDR |
355 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
7e23cb16 | 356 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ |
a3f97cbb JW |
357 | assemble_name (FILE, LABEL); \ |
358 | } while (0) | |
359 | #endif | |
360 | ||
361 | #ifndef ASM_OUTPUT_DWARF_ADDR_CONST | |
1865dbb5 JM |
362 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,RTX) \ |
363 | do { \ | |
364 | fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
365 | output_addr_const ((FILE), (RTX)); \ | |
366 | fputc ('\n', (FILE)); \ | |
367 | } while (0) | |
7e23cb16 JM |
368 | #endif |
369 | ||
7bb9fb0e JM |
370 | #ifndef ASM_OUTPUT_DWARF_OFFSET4 |
371 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ | |
372 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
373 | assemble_name (FILE, LABEL); \ | |
374 | } while (0) | |
375 | #endif | |
376 | ||
7e23cb16 JM |
377 | #ifndef ASM_OUTPUT_DWARF_OFFSET |
378 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ | |
379 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
380 | assemble_name (FILE, LABEL); \ | |
381 | } while (0) | |
a3f97cbb JW |
382 | #endif |
383 | ||
a3f97cbb JW |
384 | #ifndef ASM_OUTPUT_DWARF_DATA2 |
385 | #define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \ | |
32bd96ff | 386 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_SHORT_ASM_OP, (unsigned) (VALUE)) |
a3f97cbb JW |
387 | #endif |
388 | ||
389 | #ifndef ASM_OUTPUT_DWARF_DATA4 | |
390 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
32bd96ff | 391 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, (unsigned) (VALUE)) |
a3f97cbb JW |
392 | #endif |
393 | ||
7e23cb16 JM |
394 | #ifndef ASM_OUTPUT_DWARF_DATA |
395 | #define ASM_OUTPUT_DWARF_DATA(FILE,VALUE) \ | |
396 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_OFFSET_ASM_OP, \ | |
32bd96ff | 397 | (unsigned long) (VALUE)) |
7e23cb16 JM |
398 | #endif |
399 | ||
400 | #ifndef ASM_OUTPUT_DWARF_ADDR_DATA | |
401 | #define ASM_OUTPUT_DWARF_ADDR_DATA(FILE,VALUE) \ | |
402 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_WORD_ASM_OP, \ | |
32bd96ff | 403 | (unsigned long) (VALUE)) |
7e23cb16 JM |
404 | #endif |
405 | ||
a3f97cbb JW |
406 | #ifndef ASM_OUTPUT_DWARF_DATA8 |
407 | #define ASM_OUTPUT_DWARF_DATA8(FILE,HIGH_VALUE,LOW_VALUE) \ | |
408 | do { \ | |
409 | if (WORDS_BIG_ENDIAN) \ | |
410 | { \ | |
32bd96ff JM |
411 | fprintf ((FILE), "\t%s\t0x%lx\n", UNALIGNED_INT_ASM_OP, (HIGH_VALUE));\ |
412 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_INT_ASM_OP, (LOW_VALUE));\ | |
a3f97cbb JW |
413 | } \ |
414 | else \ | |
415 | { \ | |
32bd96ff JM |
416 | fprintf ((FILE), "\t%s\t0x%lx\n", UNALIGNED_INT_ASM_OP, (LOW_VALUE)); \ |
417 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_INT_ASM_OP, (HIGH_VALUE)); \ | |
a3f97cbb JW |
418 | } \ |
419 | } while (0) | |
420 | #endif | |
421 | ||
0021b564 JM |
422 | #else /* UNALIGNED_INT_ASM_OP */ |
423 | ||
424 | /* We don't have unaligned support, let's hope the normal output works for | |
425 | .debug_frame. */ | |
426 | ||
427 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
38a448ca | 428 | assemble_integer (gen_rtx_SYMBOL_REF (Pmode, LABEL), PTR_SIZE, 1) |
0021b564 | 429 | |
7bb9fb0e | 430 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ |
38a448ca | 431 | assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1) |
7bb9fb0e | 432 | |
0021b564 | 433 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ |
38a448ca | 434 | assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1) |
0021b564 JM |
435 | |
436 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
38a448ca | 437 | assemble_integer (gen_rtx_MINUS (HImode, \ |
c5c76735 JL |
438 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ |
439 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 JM |
440 | 2, 1) |
441 | ||
442 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
38a448ca | 443 | assemble_integer (gen_rtx_MINUS (SImode, \ |
c5c76735 JL |
444 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ |
445 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 JM |
446 | 4, 1) |
447 | ||
448 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
38a448ca | 449 | assemble_integer (gen_rtx_MINUS (Pmode, \ |
c5c76735 JL |
450 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ |
451 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 JM |
452 | PTR_SIZE, 1) |
453 | ||
454 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
455 | ASM_OUTPUT_DWARF_DELTA4 (FILE,LABEL1,LABEL2) | |
456 | ||
457 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
458 | assemble_integer (GEN_INT (VALUE), 4, 1) | |
459 | ||
460 | #endif /* UNALIGNED_INT_ASM_OP */ | |
461 | ||
2ed2af28 PDM |
462 | #ifdef SET_ASM_OP |
463 | #ifndef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL | |
7bb9fb0e JM |
464 | #define ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL(FILE, SY, HI, LO) \ |
465 | do { \ | |
466 | fprintf (FILE, "\t%s\t", SET_ASM_OP); \ | |
467 | assemble_name (FILE, SY); \ | |
468 | fputc (',', FILE); \ | |
469 | assemble_name (FILE, HI); \ | |
470 | fputc ('-', FILE); \ | |
471 | assemble_name (FILE, LO); \ | |
472 | } while (0) | |
2ed2af28 PDM |
473 | #endif |
474 | #endif /* SET_ASM_OP */ | |
475 | ||
a6ab3aad | 476 | /* This is similar to the default ASM_OUTPUT_ASCII, except that no trailing |
2ed2af28 | 477 | newline is produced. When flag_debug_asm is asserted, we add commentary |
a6ab3aad JM |
478 | at the end of the line, so we must avoid output of a newline here. */ |
479 | #ifndef ASM_OUTPUT_DWARF_STRING | |
480 | #define ASM_OUTPUT_DWARF_STRING(FILE,P) \ | |
481 | do { \ | |
482 | register int slen = strlen(P); \ | |
d560ee52 | 483 | register const char *p = (P); \ |
a6ab3aad JM |
484 | register int i; \ |
485 | fprintf (FILE, "\t.ascii \""); \ | |
486 | for (i = 0; i < slen; i++) \ | |
487 | { \ | |
488 | register int c = p[i]; \ | |
489 | if (c == '\"' || c == '\\') \ | |
490 | putc ('\\', FILE); \ | |
f3ad1f9c | 491 | if (ISPRINT(c)) \ |
a6ab3aad JM |
492 | putc (c, FILE); \ |
493 | else \ | |
494 | { \ | |
495 | fprintf (FILE, "\\%o", c); \ | |
496 | } \ | |
497 | } \ | |
498 | fprintf (FILE, "\\0\""); \ | |
499 | } \ | |
500 | while (0) | |
501 | #endif | |
502 | ||
c8cc5c4a | 503 | /* The DWARF 2 CFA column which tracks the return address. Normally this |
a94dbf2c JM |
504 | is the column for PC, or the first column after all of the hard |
505 | registers. */ | |
c8cc5c4a | 506 | #ifndef DWARF_FRAME_RETURN_COLUMN |
a94dbf2c JM |
507 | #ifdef PC_REGNUM |
508 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) | |
509 | #else | |
3073d01c | 510 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS |
a94dbf2c | 511 | #endif |
c8cc5c4a JM |
512 | #endif |
513 | ||
514 | /* The mapping from gcc register number to DWARF 2 CFA column number. By | |
469ac993 | 515 | default, we just provide columns for all registers. */ |
c8cc5c4a | 516 | #ifndef DWARF_FRAME_REGNUM |
469ac993 | 517 | #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) |
c8cc5c4a | 518 | #endif |
3f76745e | 519 | |
0021b564 JM |
520 | /* Hook used by __throw. */ |
521 | ||
522 | rtx | |
523 | expand_builtin_dwarf_fp_regnum () | |
524 | { | |
525 | return GEN_INT (DWARF_FRAME_REGNUM (HARD_FRAME_POINTER_REGNUM)); | |
526 | } | |
527 | ||
a6ab3aad JM |
528 | /* The offset from the incoming value of %sp to the top of the stack frame |
529 | for the current function. */ | |
530 | #ifndef INCOMING_FRAME_SP_OFFSET | |
531 | #define INCOMING_FRAME_SP_OFFSET 0 | |
532 | #endif | |
533 | ||
71dfc51f | 534 | /* Return a pointer to a copy of the section string name S with all |
bf20f341 | 535 | attributes stripped off, and an asterisk prepended (for assemble_name). */ |
71dfc51f RK |
536 | |
537 | static inline char * | |
a3f97cbb | 538 | stripattributes (s) |
d560ee52 | 539 | const char *s; |
a3f97cbb | 540 | { |
bf20f341 | 541 | char *stripped = xmalloc (strlen (s) + 2); |
71dfc51f RK |
542 | char *p = stripped; |
543 | ||
bf20f341 JW |
544 | *p++ = '*'; |
545 | ||
546 | while (*s && *s != ',') | |
547 | *p++ = *s++; | |
71dfc51f | 548 | |
a3f97cbb JW |
549 | *p = '\0'; |
550 | return stripped; | |
551 | } | |
552 | ||
3f76745e | 553 | /* Return the register number described by a given RTL node. */ |
71dfc51f | 554 | |
3f76745e JM |
555 | static unsigned |
556 | reg_number (rtl) | |
557 | register rtx rtl; | |
a3f97cbb | 558 | { |
3f76745e | 559 | register unsigned regno = REGNO (rtl); |
a3f97cbb | 560 | |
3073d01c | 561 | if (regno >= DWARF_FRAME_REGISTERS) |
a3f97cbb | 562 | { |
3f76745e JM |
563 | warning ("internal regno botch: regno = %d\n", regno); |
564 | regno = 0; | |
565 | } | |
a3f97cbb | 566 | |
3f76745e JM |
567 | regno = DBX_REGISTER_NUMBER (regno); |
568 | return regno; | |
569 | } | |
a3f97cbb | 570 | |
d9d5c9de | 571 | /* Generate code to initialize the register size table. */ |
2f3ca9e7 | 572 | |
d9d5c9de BS |
573 | void |
574 | expand_builtin_init_dwarf_reg_sizes (address) | |
575 | tree address; | |
2f3ca9e7 | 576 | { |
d9d5c9de BS |
577 | int i; |
578 | enum machine_mode mode = TYPE_MODE (char_type_node); | |
579 | rtx addr = expand_expr (address, NULL_RTX, VOIDmode, 0); | |
580 | rtx mem = gen_rtx_MEM (mode, addr); | |
2f3ca9e7 | 581 | |
3073d01c | 582 | for (i = 0; i < DWARF_FRAME_REGISTERS; ++i) |
2f3ca9e7 | 583 | { |
d9d5c9de BS |
584 | int offset = i * GET_MODE_SIZE (mode); |
585 | int size = GET_MODE_SIZE (reg_raw_mode[i]); | |
2f3ca9e7 | 586 | |
d9d5c9de BS |
587 | emit_move_insn (change_address (mem, mode, |
588 | plus_constant (addr, offset)), | |
589 | GEN_INT (size)); | |
2f3ca9e7 | 590 | } |
2f3ca9e7 JM |
591 | } |
592 | ||
3f76745e | 593 | /* Convert a DWARF call frame info. operation to its string name */ |
a3f97cbb | 594 | |
d560ee52 | 595 | static const char * |
3f76745e JM |
596 | dwarf_cfi_name (cfi_opc) |
597 | register unsigned cfi_opc; | |
598 | { | |
599 | switch (cfi_opc) | |
600 | { | |
601 | case DW_CFA_advance_loc: | |
602 | return "DW_CFA_advance_loc"; | |
603 | case DW_CFA_offset: | |
604 | return "DW_CFA_offset"; | |
605 | case DW_CFA_restore: | |
606 | return "DW_CFA_restore"; | |
607 | case DW_CFA_nop: | |
608 | return "DW_CFA_nop"; | |
609 | case DW_CFA_set_loc: | |
610 | return "DW_CFA_set_loc"; | |
611 | case DW_CFA_advance_loc1: | |
612 | return "DW_CFA_advance_loc1"; | |
613 | case DW_CFA_advance_loc2: | |
614 | return "DW_CFA_advance_loc2"; | |
615 | case DW_CFA_advance_loc4: | |
616 | return "DW_CFA_advance_loc4"; | |
617 | case DW_CFA_offset_extended: | |
618 | return "DW_CFA_offset_extended"; | |
619 | case DW_CFA_restore_extended: | |
620 | return "DW_CFA_restore_extended"; | |
621 | case DW_CFA_undefined: | |
622 | return "DW_CFA_undefined"; | |
623 | case DW_CFA_same_value: | |
624 | return "DW_CFA_same_value"; | |
625 | case DW_CFA_register: | |
626 | return "DW_CFA_register"; | |
627 | case DW_CFA_remember_state: | |
628 | return "DW_CFA_remember_state"; | |
629 | case DW_CFA_restore_state: | |
630 | return "DW_CFA_restore_state"; | |
631 | case DW_CFA_def_cfa: | |
632 | return "DW_CFA_def_cfa"; | |
633 | case DW_CFA_def_cfa_register: | |
634 | return "DW_CFA_def_cfa_register"; | |
635 | case DW_CFA_def_cfa_offset: | |
636 | return "DW_CFA_def_cfa_offset"; | |
c53aa195 | 637 | |
3f76745e JM |
638 | /* SGI/MIPS specific */ |
639 | case DW_CFA_MIPS_advance_loc8: | |
640 | return "DW_CFA_MIPS_advance_loc8"; | |
c53aa195 JM |
641 | |
642 | /* GNU extensions */ | |
643 | case DW_CFA_GNU_window_save: | |
644 | return "DW_CFA_GNU_window_save"; | |
0021b564 JM |
645 | case DW_CFA_GNU_args_size: |
646 | return "DW_CFA_GNU_args_size"; | |
3f388b42 GK |
647 | case DW_CFA_GNU_negative_offset_extended: |
648 | return "DW_CFA_GNU_negative_offset_extended"; | |
c53aa195 | 649 | |
3f76745e JM |
650 | default: |
651 | return "DW_CFA_<unknown>"; | |
652 | } | |
653 | } | |
a3f97cbb | 654 | |
3f76745e | 655 | /* Return a pointer to a newly allocated Call Frame Instruction. */ |
71dfc51f | 656 | |
3f76745e JM |
657 | static inline dw_cfi_ref |
658 | new_cfi () | |
659 | { | |
660 | register dw_cfi_ref cfi = (dw_cfi_ref) xmalloc (sizeof (dw_cfi_node)); | |
71dfc51f | 661 | |
3f76745e JM |
662 | cfi->dw_cfi_next = NULL; |
663 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = 0; | |
664 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = 0; | |
a3f97cbb | 665 | |
3f76745e JM |
666 | return cfi; |
667 | } | |
a3f97cbb | 668 | |
3f76745e | 669 | /* Add a Call Frame Instruction to list of instructions. */ |
a3f97cbb | 670 | |
3f76745e JM |
671 | static inline void |
672 | add_cfi (list_head, cfi) | |
673 | register dw_cfi_ref *list_head; | |
674 | register dw_cfi_ref cfi; | |
675 | { | |
676 | register dw_cfi_ref *p; | |
a3f97cbb | 677 | |
3f76745e JM |
678 | /* Find the end of the chain. */ |
679 | for (p = list_head; (*p) != NULL; p = &(*p)->dw_cfi_next) | |
680 | ; | |
681 | ||
682 | *p = cfi; | |
a3f97cbb JW |
683 | } |
684 | ||
3f76745e | 685 | /* Generate a new label for the CFI info to refer to. */ |
71dfc51f | 686 | |
c53aa195 | 687 | char * |
3f76745e | 688 | dwarf2out_cfi_label () |
a3f97cbb | 689 | { |
3f76745e JM |
690 | static char label[20]; |
691 | static unsigned long label_num = 0; | |
692 | ||
693 | ASM_GENERATE_INTERNAL_LABEL (label, "LCFI", label_num++); | |
694 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
695 | ||
696 | return label; | |
a3f97cbb JW |
697 | } |
698 | ||
3f76745e JM |
699 | /* Add CFI to the current fde at the PC value indicated by LABEL if specified, |
700 | or to the CIE if LABEL is NULL. */ | |
71dfc51f | 701 | |
3f76745e JM |
702 | static void |
703 | add_fde_cfi (label, cfi) | |
704 | register char *label; | |
705 | register dw_cfi_ref cfi; | |
a3f97cbb | 706 | { |
3f76745e JM |
707 | if (label) |
708 | { | |
709 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; | |
a3f97cbb | 710 | |
3f76745e JM |
711 | if (*label == 0) |
712 | label = dwarf2out_cfi_label (); | |
71dfc51f | 713 | |
3f76745e JM |
714 | if (fde->dw_fde_current_label == NULL |
715 | || strcmp (label, fde->dw_fde_current_label) != 0) | |
716 | { | |
717 | register dw_cfi_ref xcfi; | |
a3f97cbb | 718 | |
3f76745e | 719 | fde->dw_fde_current_label = label = xstrdup (label); |
71dfc51f | 720 | |
3f76745e JM |
721 | /* Set the location counter to the new label. */ |
722 | xcfi = new_cfi (); | |
723 | xcfi->dw_cfi_opc = DW_CFA_advance_loc4; | |
724 | xcfi->dw_cfi_oprnd1.dw_cfi_addr = label; | |
725 | add_cfi (&fde->dw_fde_cfi, xcfi); | |
726 | } | |
71dfc51f | 727 | |
3f76745e JM |
728 | add_cfi (&fde->dw_fde_cfi, cfi); |
729 | } | |
730 | ||
731 | else | |
732 | add_cfi (&cie_cfi_head, cfi); | |
a3f97cbb JW |
733 | } |
734 | ||
3f76745e | 735 | /* Subroutine of lookup_cfa. */ |
71dfc51f | 736 | |
3f76745e JM |
737 | static inline void |
738 | lookup_cfa_1 (cfi, regp, offsetp) | |
739 | register dw_cfi_ref cfi; | |
740 | register unsigned long *regp; | |
741 | register long *offsetp; | |
a3f97cbb | 742 | { |
3f76745e JM |
743 | switch (cfi->dw_cfi_opc) |
744 | { | |
745 | case DW_CFA_def_cfa_offset: | |
746 | *offsetp = cfi->dw_cfi_oprnd1.dw_cfi_offset; | |
747 | break; | |
748 | case DW_CFA_def_cfa_register: | |
749 | *regp = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; | |
750 | break; | |
751 | case DW_CFA_def_cfa: | |
752 | *regp = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; | |
753 | *offsetp = cfi->dw_cfi_oprnd2.dw_cfi_offset; | |
754 | break; | |
e9a25f70 JL |
755 | default: |
756 | break; | |
3f76745e | 757 | } |
a3f97cbb JW |
758 | } |
759 | ||
3f76745e | 760 | /* Find the previous value for the CFA. */ |
71dfc51f | 761 | |
3f76745e JM |
762 | static void |
763 | lookup_cfa (regp, offsetp) | |
764 | register unsigned long *regp; | |
765 | register long *offsetp; | |
a3f97cbb | 766 | { |
3f76745e JM |
767 | register dw_cfi_ref cfi; |
768 | ||
769 | *regp = (unsigned long) -1; | |
770 | *offsetp = 0; | |
771 | ||
772 | for (cfi = cie_cfi_head; cfi; cfi = cfi->dw_cfi_next) | |
773 | lookup_cfa_1 (cfi, regp, offsetp); | |
774 | ||
775 | if (fde_table_in_use) | |
a3f97cbb | 776 | { |
3f76745e JM |
777 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; |
778 | for (cfi = fde->dw_fde_cfi; cfi; cfi = cfi->dw_cfi_next) | |
779 | lookup_cfa_1 (cfi, regp, offsetp); | |
a3f97cbb JW |
780 | } |
781 | } | |
782 | ||
3f76745e | 783 | /* The current rule for calculating the DWARF2 canonical frame address. */ |
a6ab3aad | 784 | static unsigned long cfa_reg; |
3f76745e | 785 | static long cfa_offset; |
71dfc51f | 786 | |
3f76745e JM |
787 | /* The register used for saving registers to the stack, and its offset |
788 | from the CFA. */ | |
789 | static unsigned cfa_store_reg; | |
790 | static long cfa_store_offset; | |
791 | ||
0021b564 JM |
792 | /* The running total of the size of arguments pushed onto the stack. */ |
793 | static long args_size; | |
794 | ||
b57d9225 JM |
795 | /* The last args_size we actually output. */ |
796 | static long old_args_size; | |
797 | ||
3f76745e JM |
798 | /* Entry point to update the canonical frame address (CFA). |
799 | LABEL is passed to add_fde_cfi. The value of CFA is now to be | |
800 | calculated from REG+OFFSET. */ | |
801 | ||
802 | void | |
803 | dwarf2out_def_cfa (label, reg, offset) | |
804 | register char *label; | |
805 | register unsigned reg; | |
806 | register long offset; | |
a3f97cbb | 807 | { |
3f76745e JM |
808 | register dw_cfi_ref cfi; |
809 | unsigned long old_reg; | |
810 | long old_offset; | |
811 | ||
5bef9b1f JM |
812 | cfa_reg = reg; |
813 | cfa_offset = offset; | |
814 | if (cfa_store_reg == reg) | |
815 | cfa_store_offset = offset; | |
816 | ||
3f76745e JM |
817 | reg = DWARF_FRAME_REGNUM (reg); |
818 | lookup_cfa (&old_reg, &old_offset); | |
819 | ||
820 | if (reg == old_reg && offset == old_offset) | |
821 | return; | |
822 | ||
823 | cfi = new_cfi (); | |
824 | ||
825 | if (reg == old_reg) | |
a3f97cbb | 826 | { |
3f76745e JM |
827 | cfi->dw_cfi_opc = DW_CFA_def_cfa_offset; |
828 | cfi->dw_cfi_oprnd1.dw_cfi_offset = offset; | |
829 | } | |
a3f97cbb | 830 | |
3f76745e JM |
831 | #ifndef MIPS_DEBUGGING_INFO /* SGI dbx thinks this means no offset. */ |
832 | else if (offset == old_offset && old_reg != (unsigned long) -1) | |
833 | { | |
834 | cfi->dw_cfi_opc = DW_CFA_def_cfa_register; | |
835 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
836 | } | |
837 | #endif | |
a3f97cbb | 838 | |
3f76745e JM |
839 | else |
840 | { | |
841 | cfi->dw_cfi_opc = DW_CFA_def_cfa; | |
842 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
843 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; | |
a3f97cbb | 844 | } |
3f76745e JM |
845 | |
846 | add_fde_cfi (label, cfi); | |
a3f97cbb JW |
847 | } |
848 | ||
3f76745e JM |
849 | /* Add the CFI for saving a register. REG is the CFA column number. |
850 | LABEL is passed to add_fde_cfi. | |
851 | If SREG is -1, the register is saved at OFFSET from the CFA; | |
852 | otherwise it is saved in SREG. */ | |
71dfc51f | 853 | |
3f76745e JM |
854 | static void |
855 | reg_save (label, reg, sreg, offset) | |
856 | register char * label; | |
857 | register unsigned reg; | |
858 | register unsigned sreg; | |
859 | register long offset; | |
a3f97cbb | 860 | { |
3f76745e JM |
861 | register dw_cfi_ref cfi = new_cfi (); |
862 | ||
863 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
864 | ||
85066503 MH |
865 | /* The following comparison is correct. -1 is used to indicate that |
866 | the value isn't a register number. */ | |
867 | if (sreg == (unsigned int) -1) | |
a3f97cbb | 868 | { |
3f76745e JM |
869 | if (reg & ~0x3f) |
870 | /* The register number won't fit in 6 bits, so we have to use | |
871 | the long form. */ | |
872 | cfi->dw_cfi_opc = DW_CFA_offset_extended; | |
873 | else | |
874 | cfi->dw_cfi_opc = DW_CFA_offset; | |
875 | ||
876 | offset /= DWARF_CIE_DATA_ALIGNMENT; | |
3a88cbd1 | 877 | if (offset < 0) |
3f388b42 GK |
878 | { |
879 | cfi->dw_cfi_opc = DW_CFA_GNU_negative_offset_extended; | |
880 | offset = -offset; | |
881 | } | |
3f76745e JM |
882 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; |
883 | } | |
884 | else | |
885 | { | |
886 | cfi->dw_cfi_opc = DW_CFA_register; | |
887 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = sreg; | |
888 | } | |
889 | ||
890 | add_fde_cfi (label, cfi); | |
891 | } | |
892 | ||
c53aa195 JM |
893 | /* Add the CFI for saving a register window. LABEL is passed to reg_save. |
894 | This CFI tells the unwinder that it needs to restore the window registers | |
895 | from the previous frame's window save area. | |
896 | ||
897 | ??? Perhaps we should note in the CIE where windows are saved (instead of | |
898 | assuming 0(cfa)) and what registers are in the window. */ | |
899 | ||
900 | void | |
901 | dwarf2out_window_save (label) | |
902 | register char * label; | |
903 | { | |
904 | register dw_cfi_ref cfi = new_cfi (); | |
905 | cfi->dw_cfi_opc = DW_CFA_GNU_window_save; | |
906 | add_fde_cfi (label, cfi); | |
907 | } | |
908 | ||
0021b564 JM |
909 | /* Add a CFI to update the running total of the size of arguments |
910 | pushed onto the stack. */ | |
911 | ||
912 | void | |
913 | dwarf2out_args_size (label, size) | |
914 | char *label; | |
915 | long size; | |
916 | { | |
b57d9225 JM |
917 | register dw_cfi_ref cfi; |
918 | ||
919 | if (size == old_args_size) | |
920 | return; | |
921 | old_args_size = size; | |
922 | ||
923 | cfi = new_cfi (); | |
0021b564 JM |
924 | cfi->dw_cfi_opc = DW_CFA_GNU_args_size; |
925 | cfi->dw_cfi_oprnd1.dw_cfi_offset = size; | |
926 | add_fde_cfi (label, cfi); | |
927 | } | |
928 | ||
c53aa195 JM |
929 | /* Entry point for saving a register to the stack. REG is the GCC register |
930 | number. LABEL and OFFSET are passed to reg_save. */ | |
3f76745e JM |
931 | |
932 | void | |
933 | dwarf2out_reg_save (label, reg, offset) | |
934 | register char * label; | |
935 | register unsigned reg; | |
936 | register long offset; | |
937 | { | |
938 | reg_save (label, DWARF_FRAME_REGNUM (reg), -1, offset); | |
939 | } | |
940 | ||
c53aa195 JM |
941 | /* Entry point for saving the return address in the stack. |
942 | LABEL and OFFSET are passed to reg_save. */ | |
943 | ||
944 | void | |
945 | dwarf2out_return_save (label, offset) | |
946 | register char * label; | |
947 | register long offset; | |
948 | { | |
949 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, -1, offset); | |
950 | } | |
951 | ||
952 | /* Entry point for saving the return address in a register. | |
953 | LABEL and SREG are passed to reg_save. */ | |
954 | ||
955 | void | |
956 | dwarf2out_return_reg (label, sreg) | |
957 | register char * label; | |
958 | register unsigned sreg; | |
959 | { | |
960 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, sreg, 0); | |
961 | } | |
962 | ||
3f76745e JM |
963 | /* Record the initial position of the return address. RTL is |
964 | INCOMING_RETURN_ADDR_RTX. */ | |
965 | ||
966 | static void | |
967 | initial_return_save (rtl) | |
968 | register rtx rtl; | |
969 | { | |
973838fd | 970 | unsigned int reg = (unsigned int) -1; |
3f76745e JM |
971 | long offset = 0; |
972 | ||
973 | switch (GET_CODE (rtl)) | |
974 | { | |
975 | case REG: | |
976 | /* RA is in a register. */ | |
977 | reg = reg_number (rtl); | |
978 | break; | |
979 | case MEM: | |
980 | /* RA is on the stack. */ | |
981 | rtl = XEXP (rtl, 0); | |
982 | switch (GET_CODE (rtl)) | |
983 | { | |
984 | case REG: | |
3a88cbd1 JL |
985 | if (REGNO (rtl) != STACK_POINTER_REGNUM) |
986 | abort (); | |
3f76745e JM |
987 | offset = 0; |
988 | break; | |
989 | case PLUS: | |
3a88cbd1 JL |
990 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
991 | abort (); | |
3f76745e JM |
992 | offset = INTVAL (XEXP (rtl, 1)); |
993 | break; | |
994 | case MINUS: | |
3a88cbd1 JL |
995 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
996 | abort (); | |
3f76745e JM |
997 | offset = -INTVAL (XEXP (rtl, 1)); |
998 | break; | |
999 | default: | |
1000 | abort (); | |
1001 | } | |
1002 | break; | |
c53aa195 JM |
1003 | case PLUS: |
1004 | /* The return address is at some offset from any value we can | |
1005 | actually load. For instance, on the SPARC it is in %i7+8. Just | |
1006 | ignore the offset for now; it doesn't matter for unwinding frames. */ | |
3a88cbd1 JL |
1007 | if (GET_CODE (XEXP (rtl, 1)) != CONST_INT) |
1008 | abort (); | |
c53aa195 JM |
1009 | initial_return_save (XEXP (rtl, 0)); |
1010 | return; | |
a3f97cbb | 1011 | default: |
3f76745e | 1012 | abort (); |
a3f97cbb | 1013 | } |
3f76745e | 1014 | |
a6ab3aad | 1015 | reg_save (NULL, DWARF_FRAME_RETURN_COLUMN, reg, offset - cfa_offset); |
a3f97cbb JW |
1016 | } |
1017 | ||
0021b564 JM |
1018 | /* Check INSN to see if it looks like a push or a stack adjustment, and |
1019 | make a note of it if it does. EH uses this information to find out how | |
1020 | much extra space it needs to pop off the stack. */ | |
1021 | ||
1022 | static void | |
1023 | dwarf2out_stack_adjust (insn) | |
1024 | rtx insn; | |
1025 | { | |
0021b564 JM |
1026 | long offset; |
1027 | char *label; | |
1028 | ||
b57d9225 JM |
1029 | if (! asynchronous_exceptions && GET_CODE (insn) == CALL_INSN) |
1030 | { | |
1031 | /* Extract the size of the args from the CALL rtx itself. */ | |
1032 | ||
1033 | insn = PATTERN (insn); | |
1034 | if (GET_CODE (insn) == PARALLEL) | |
1035 | insn = XVECEXP (insn, 0, 0); | |
1036 | if (GET_CODE (insn) == SET) | |
1037 | insn = SET_SRC (insn); | |
1038 | assert (GET_CODE (insn) == CALL); | |
1039 | dwarf2out_args_size ("", INTVAL (XEXP (insn, 1))); | |
1040 | return; | |
1041 | } | |
1042 | ||
1043 | /* If only calls can throw, and we have a frame pointer, | |
1044 | save up adjustments until we see the CALL_INSN. */ | |
1045 | else if (! asynchronous_exceptions | |
1046 | && cfa_reg != STACK_POINTER_REGNUM) | |
1047 | return; | |
1048 | ||
6020d360 | 1049 | if (GET_CODE (insn) == BARRIER) |
0021b564 | 1050 | { |
6020d360 JM |
1051 | /* When we see a BARRIER, we know to reset args_size to 0. Usually |
1052 | the compiler will have already emitted a stack adjustment, but | |
1053 | doesn't bother for calls to noreturn functions. */ | |
1054 | #ifdef STACK_GROWS_DOWNWARD | |
1055 | offset = -args_size; | |
1056 | #else | |
1057 | offset = args_size; | |
1058 | #endif | |
0021b564 | 1059 | } |
6020d360 | 1060 | else if (GET_CODE (PATTERN (insn)) == SET) |
0021b564 | 1061 | { |
6020d360 JM |
1062 | rtx src, dest; |
1063 | enum rtx_code code; | |
1064 | ||
1065 | insn = PATTERN (insn); | |
1066 | src = SET_SRC (insn); | |
1067 | dest = SET_DEST (insn); | |
0021b564 | 1068 | |
6020d360 JM |
1069 | if (dest == stack_pointer_rtx) |
1070 | { | |
1071 | /* (set (reg sp) (plus (reg sp) (const_int))) */ | |
1072 | code = GET_CODE (src); | |
1073 | if (! (code == PLUS || code == MINUS) | |
1074 | || XEXP (src, 0) != stack_pointer_rtx | |
1075 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
1076 | return; | |
1077 | ||
1078 | offset = INTVAL (XEXP (src, 1)); | |
1079 | } | |
1080 | else if (GET_CODE (dest) == MEM) | |
1081 | { | |
1082 | /* (set (mem (pre_dec (reg sp))) (foo)) */ | |
1083 | src = XEXP (dest, 0); | |
1084 | code = GET_CODE (src); | |
1085 | ||
1086 | if (! (code == PRE_DEC || code == PRE_INC) | |
1087 | || XEXP (src, 0) != stack_pointer_rtx) | |
1088 | return; | |
1089 | ||
1090 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1091 | } | |
1092 | else | |
0021b564 JM |
1093 | return; |
1094 | ||
6020d360 JM |
1095 | if (code == PLUS || code == PRE_INC) |
1096 | offset = -offset; | |
0021b564 JM |
1097 | } |
1098 | else | |
1099 | return; | |
1100 | ||
6020d360 JM |
1101 | if (offset == 0) |
1102 | return; | |
1103 | ||
0021b564 JM |
1104 | if (cfa_reg == STACK_POINTER_REGNUM) |
1105 | cfa_offset += offset; | |
1106 | ||
1107 | #ifndef STACK_GROWS_DOWNWARD | |
1108 | offset = -offset; | |
1109 | #endif | |
1110 | args_size += offset; | |
1111 | if (args_size < 0) | |
1112 | args_size = 0; | |
1113 | ||
1114 | label = dwarf2out_cfi_label (); | |
1115 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1116 | dwarf2out_args_size (label, args_size); | |
1117 | } | |
1118 | ||
b664de3a AM |
1119 | /* A temporary register used in adjusting SP or setting up the store_reg. */ |
1120 | static unsigned cfa_temp_reg; | |
1121 | ||
1122 | /* A temporary value used in adjusting SP or setting up the store_reg. */ | |
1123 | static long cfa_temp_value; | |
1124 | ||
1125 | /* Record call frame debugging information for an expression, which either | |
1126 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
1127 | register to the stack. */ | |
1128 | ||
1129 | static void | |
1130 | dwarf2out_frame_debug_expr (expr, label) | |
1131 | rtx expr; | |
1132 | char *label; | |
1133 | { | |
1134 | rtx src, dest; | |
1135 | long offset; | |
1136 | ||
1137 | /* If RTX_FRAME_RELATED_P is set on a PARALLEL, process each member of | |
1138 | the PARALLEL independantly. The first element is always processed if | |
1139 | it is a SET. This is for backward compatability. Other elements | |
1140 | are processed only if they are SETs and the RTX_FRAME_RELATED_P | |
1141 | flag is set in them. */ | |
1142 | ||
1143 | if (GET_CODE (expr) == PARALLEL) | |
1144 | { | |
1145 | int par_index; | |
1146 | int limit = XVECLEN (expr, 0); | |
1147 | ||
1148 | for (par_index = 0; par_index < limit; par_index++) | |
1149 | { | |
1150 | rtx x = XVECEXP (expr, 0, par_index); | |
1151 | ||
1152 | if (GET_CODE (x) == SET && | |
1153 | (RTX_FRAME_RELATED_P (x) || par_index == 0)) | |
2618f955 | 1154 | dwarf2out_frame_debug_expr (x, label); |
b664de3a AM |
1155 | } |
1156 | return; | |
1157 | } | |
1158 | ||
1159 | if (GET_CODE (expr) != SET) | |
1160 | abort (); | |
1161 | ||
1162 | src = SET_SRC (expr); | |
1163 | dest = SET_DEST (expr); | |
1164 | ||
1165 | switch (GET_CODE (dest)) | |
1166 | { | |
1167 | case REG: | |
1168 | /* Update the CFA rule wrt SP or FP. Make sure src is | |
1169 | relative to the current CFA register. */ | |
1170 | switch (GET_CODE (src)) | |
1171 | { | |
1172 | /* Setting FP from SP. */ | |
1173 | case REG: | |
1174 | if (cfa_reg != (unsigned) REGNO (src)) | |
1175 | abort (); | |
1176 | if (REGNO (dest) != STACK_POINTER_REGNUM | |
2618f955 MM |
1177 | && !(frame_pointer_needed |
1178 | && REGNO (dest) == HARD_FRAME_POINTER_REGNUM)) | |
b664de3a AM |
1179 | abort (); |
1180 | cfa_reg = REGNO (dest); | |
1181 | break; | |
1182 | ||
1183 | case PLUS: | |
1184 | case MINUS: | |
1185 | if (dest == stack_pointer_rtx) | |
1186 | { | |
2618f955 MM |
1187 | /* Adjusting SP. */ |
1188 | switch (GET_CODE (XEXP (src, 1))) | |
1189 | { | |
1190 | case CONST_INT: | |
1191 | offset = INTVAL (XEXP (src, 1)); | |
1192 | break; | |
1193 | case REG: | |
1194 | if ((unsigned) REGNO (XEXP (src, 1)) != cfa_temp_reg) | |
1195 | abort (); | |
1196 | offset = cfa_temp_value; | |
1197 | break; | |
1198 | default: | |
1199 | abort (); | |
1200 | } | |
1201 | ||
1202 | if (XEXP (src, 0) == hard_frame_pointer_rtx) | |
1203 | { | |
1204 | /* Restoring SP from FP in the epilogue. */ | |
1205 | if (cfa_reg != (unsigned) HARD_FRAME_POINTER_REGNUM) | |
1206 | abort (); | |
1207 | cfa_reg = STACK_POINTER_REGNUM; | |
1208 | } | |
1209 | else if (XEXP (src, 0) != stack_pointer_rtx) | |
1210 | abort (); | |
1211 | ||
1212 | if (GET_CODE (src) == PLUS) | |
1213 | offset = -offset; | |
1214 | if (cfa_reg == STACK_POINTER_REGNUM) | |
1215 | cfa_offset += offset; | |
1216 | if (cfa_store_reg == STACK_POINTER_REGNUM) | |
1217 | cfa_store_offset += offset; | |
b664de3a AM |
1218 | } |
1219 | else if (dest == hard_frame_pointer_rtx) | |
1220 | { | |
2618f955 MM |
1221 | /* Either setting the FP from an offset of the SP, |
1222 | or adjusting the FP */ | |
1223 | if (! frame_pointer_needed | |
1224 | || REGNO (dest) != HARD_FRAME_POINTER_REGNUM) | |
1225 | abort (); | |
1226 | ||
1227 | if (XEXP (src, 0) == stack_pointer_rtx | |
1228 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
1229 | { | |
1230 | if (cfa_reg != STACK_POINTER_REGNUM) | |
1231 | abort (); | |
1232 | offset = INTVAL (XEXP (src, 1)); | |
1233 | if (GET_CODE (src) == PLUS) | |
1234 | offset = -offset; | |
1235 | cfa_offset += offset; | |
1236 | cfa_reg = HARD_FRAME_POINTER_REGNUM; | |
1237 | } | |
1238 | else if (XEXP (src, 0) == hard_frame_pointer_rtx | |
1239 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
1240 | { | |
1241 | if (cfa_reg != (unsigned) HARD_FRAME_POINTER_REGNUM) | |
1242 | abort (); | |
1243 | offset = INTVAL (XEXP (src, 1)); | |
1244 | if (GET_CODE (src) == PLUS) | |
1245 | offset = -offset; | |
1246 | cfa_offset += offset; | |
1247 | } | |
1248 | ||
1249 | else | |
1250 | abort(); | |
b664de3a AM |
1251 | } |
1252 | else | |
1253 | { | |
2618f955 MM |
1254 | if (GET_CODE (src) != PLUS |
1255 | || XEXP (src, 1) != stack_pointer_rtx) | |
1256 | abort (); | |
1257 | if (GET_CODE (XEXP (src, 0)) != REG | |
1258 | || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp_reg) | |
1259 | abort (); | |
1260 | if (cfa_reg != STACK_POINTER_REGNUM) | |
1261 | abort (); | |
1262 | cfa_store_reg = REGNO (dest); | |
1263 | cfa_store_offset = cfa_offset - cfa_temp_value; | |
b664de3a AM |
1264 | } |
1265 | break; | |
1266 | ||
1267 | case CONST_INT: | |
1268 | cfa_temp_reg = REGNO (dest); | |
1269 | cfa_temp_value = INTVAL (src); | |
1270 | break; | |
1271 | ||
1272 | case IOR: | |
1273 | if (GET_CODE (XEXP (src, 0)) != REG | |
2618f955 MM |
1274 | || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp_reg |
1275 | || (unsigned) REGNO (dest) != cfa_temp_reg | |
1276 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
b664de3a AM |
1277 | abort (); |
1278 | cfa_temp_value |= INTVAL (XEXP (src, 1)); | |
1279 | break; | |
1280 | ||
1281 | default: | |
1282 | abort (); | |
1283 | } | |
1284 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
2618f955 | 1285 | break; |
b664de3a | 1286 | |
2618f955 MM |
1287 | case MEM: |
1288 | /* Saving a register to the stack. Make sure dest is relative to the | |
1289 | CFA register. */ | |
1290 | if (GET_CODE (src) != REG) | |
1291 | abort (); | |
1292 | switch (GET_CODE (XEXP (dest, 0))) | |
1293 | { | |
1294 | /* With a push. */ | |
1295 | case PRE_INC: | |
1296 | case PRE_DEC: | |
1297 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1298 | if (GET_CODE (XEXP (dest, 0)) == PRE_INC) | |
1299 | offset = -offset; | |
b664de3a | 1300 | |
2618f955 MM |
1301 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM |
1302 | || cfa_store_reg != STACK_POINTER_REGNUM) | |
1303 | abort (); | |
1304 | cfa_store_offset += offset; | |
1305 | if (cfa_reg == STACK_POINTER_REGNUM) | |
1306 | cfa_offset = cfa_store_offset; | |
b664de3a | 1307 | |
2618f955 MM |
1308 | offset = -cfa_store_offset; |
1309 | break; | |
b664de3a | 1310 | |
2618f955 MM |
1311 | /* With an offset. */ |
1312 | case PLUS: | |
1313 | case MINUS: | |
1314 | offset = INTVAL (XEXP (XEXP (dest, 0), 1)); | |
1315 | if (GET_CODE (XEXP (dest, 0)) == MINUS) | |
1316 | offset = -offset; | |
b664de3a | 1317 | |
2618f955 MM |
1318 | if (cfa_store_reg != (unsigned) REGNO (XEXP (XEXP (dest, 0), 0))) |
1319 | abort (); | |
1320 | offset -= cfa_store_offset; | |
1321 | break; | |
1322 | ||
1323 | /* Without an offset. */ | |
1324 | case REG: | |
1325 | if (cfa_store_reg != (unsigned) REGNO (XEXP (dest, 0))) | |
1326 | abort(); | |
1327 | offset = -cfa_store_offset; | |
1328 | break; | |
1329 | ||
1330 | default: | |
1331 | abort (); | |
1332 | } | |
1333 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1334 | dwarf2out_reg_save (label, REGNO (src), offset); | |
1335 | break; | |
1336 | ||
1337 | default: | |
1338 | abort (); | |
1339 | } | |
b664de3a AM |
1340 | } |
1341 | ||
1342 | ||
3f76745e JM |
1343 | /* Record call frame debugging information for INSN, which either |
1344 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
1345 | register to the stack. If INSN is NULL_RTX, initialize our state. */ | |
71dfc51f | 1346 | |
3f76745e JM |
1347 | void |
1348 | dwarf2out_frame_debug (insn) | |
1349 | rtx insn; | |
a3f97cbb | 1350 | { |
3f76745e | 1351 | char *label; |
b664de3a | 1352 | rtx src; |
3f76745e JM |
1353 | |
1354 | if (insn == NULL_RTX) | |
a3f97cbb | 1355 | { |
3f76745e | 1356 | /* Set up state for generating call frame debug info. */ |
a6ab3aad | 1357 | lookup_cfa (&cfa_reg, &cfa_offset); |
3a88cbd1 JL |
1358 | if (cfa_reg != DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM)) |
1359 | abort (); | |
3f76745e | 1360 | cfa_reg = STACK_POINTER_REGNUM; |
a6ab3aad JM |
1361 | cfa_store_reg = cfa_reg; |
1362 | cfa_store_offset = cfa_offset; | |
3f76745e JM |
1363 | cfa_temp_reg = -1; |
1364 | cfa_temp_value = 0; | |
1365 | return; | |
1366 | } | |
1367 | ||
0021b564 JM |
1368 | if (! RTX_FRAME_RELATED_P (insn)) |
1369 | { | |
6020d360 | 1370 | dwarf2out_stack_adjust (insn); |
0021b564 JM |
1371 | return; |
1372 | } | |
1373 | ||
3f76745e JM |
1374 | label = dwarf2out_cfi_label (); |
1375 | ||
07ebc930 RH |
1376 | src = find_reg_note (insn, REG_FRAME_RELATED_EXPR, NULL_RTX); |
1377 | if (src) | |
1378 | insn = XEXP (src, 0); | |
b664de3a | 1379 | else |
07ebc930 RH |
1380 | insn = PATTERN (insn); |
1381 | ||
b664de3a | 1382 | dwarf2out_frame_debug_expr (insn, label); |
3f76745e JM |
1383 | } |
1384 | ||
1385 | /* Return the size of an unsigned LEB128 quantity. */ | |
1386 | ||
1387 | static inline unsigned long | |
1388 | size_of_uleb128 (value) | |
1389 | register unsigned long value; | |
1390 | { | |
1391 | register unsigned long size = 0; | |
1392 | register unsigned byte; | |
1393 | ||
1394 | do | |
1395 | { | |
1396 | byte = (value & 0x7f); | |
1397 | value >>= 7; | |
1398 | size += 1; | |
1399 | } | |
1400 | while (value != 0); | |
1401 | ||
1402 | return size; | |
1403 | } | |
1404 | ||
1405 | /* Return the size of a signed LEB128 quantity. */ | |
1406 | ||
1407 | static inline unsigned long | |
1408 | size_of_sleb128 (value) | |
1409 | register long value; | |
1410 | { | |
1411 | register unsigned long size = 0; | |
1412 | register unsigned byte; | |
1413 | ||
1414 | do | |
1415 | { | |
1416 | byte = (value & 0x7f); | |
1417 | value >>= 7; | |
1418 | size += 1; | |
1419 | } | |
1420 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
1421 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1422 | ||
1423 | return size; | |
1424 | } | |
1425 | ||
3f76745e JM |
1426 | /* Output an unsigned LEB128 quantity. */ |
1427 | ||
1428 | static void | |
1429 | output_uleb128 (value) | |
1430 | register unsigned long value; | |
1431 | { | |
1432 | unsigned long save_value = value; | |
1433 | ||
1434 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
1435 | do | |
1436 | { | |
1437 | register unsigned byte = (value & 0x7f); | |
1438 | value >>= 7; | |
1439 | if (value != 0) | |
1440 | /* More bytes to follow. */ | |
1441 | byte |= 0x80; | |
1442 | ||
1443 | fprintf (asm_out_file, "0x%x", byte); | |
1444 | if (value != 0) | |
1445 | fprintf (asm_out_file, ","); | |
1446 | } | |
1447 | while (value != 0); | |
1448 | ||
c5cec899 | 1449 | if (flag_debug_asm) |
2d8b0f3a | 1450 | fprintf (asm_out_file, "\t%s ULEB128 0x%lx", ASM_COMMENT_START, save_value); |
3f76745e JM |
1451 | } |
1452 | ||
1453 | /* Output an signed LEB128 quantity. */ | |
1454 | ||
1455 | static void | |
1456 | output_sleb128 (value) | |
1457 | register long value; | |
1458 | { | |
1459 | register int more; | |
1460 | register unsigned byte; | |
1461 | long save_value = value; | |
1462 | ||
1463 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
1464 | do | |
1465 | { | |
1466 | byte = (value & 0x7f); | |
1467 | /* arithmetic shift */ | |
1468 | value >>= 7; | |
1469 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
1470 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1471 | if (more) | |
1472 | byte |= 0x80; | |
1473 | ||
1474 | fprintf (asm_out_file, "0x%x", byte); | |
1475 | if (more) | |
1476 | fprintf (asm_out_file, ","); | |
1477 | } | |
1478 | ||
1479 | while (more); | |
c5cec899 | 1480 | if (flag_debug_asm) |
2d8b0f3a | 1481 | fprintf (asm_out_file, "\t%s SLEB128 %ld", ASM_COMMENT_START, save_value); |
3f76745e JM |
1482 | } |
1483 | ||
1484 | /* Output a Call Frame Information opcode and its operand(s). */ | |
1485 | ||
1486 | static void | |
1487 | output_cfi (cfi, fde) | |
1488 | register dw_cfi_ref cfi; | |
1489 | register dw_fde_ref fde; | |
1490 | { | |
1491 | if (cfi->dw_cfi_opc == DW_CFA_advance_loc) | |
1492 | { | |
1493 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1494 | cfi->dw_cfi_opc | |
1495 | | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)); | |
c5cec899 | 1496 | if (flag_debug_asm) |
2d8b0f3a | 1497 | fprintf (asm_out_file, "\t%s DW_CFA_advance_loc 0x%lx", |
3f76745e JM |
1498 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_offset); |
1499 | fputc ('\n', asm_out_file); | |
1500 | } | |
1501 | ||
1502 | else if (cfi->dw_cfi_opc == DW_CFA_offset) | |
1503 | { | |
1504 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1505 | cfi->dw_cfi_opc | |
1506 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1507 | if (flag_debug_asm) |
2d8b0f3a | 1508 | fprintf (asm_out_file, "\t%s DW_CFA_offset, column 0x%lx", |
3f76745e JM |
1509 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); |
1510 | ||
1511 | fputc ('\n', asm_out_file); | |
1512 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1513 | fputc ('\n', asm_out_file); | |
1514 | } | |
1515 | else if (cfi->dw_cfi_opc == DW_CFA_restore) | |
1516 | { | |
1517 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1518 | cfi->dw_cfi_opc | |
1519 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1520 | if (flag_debug_asm) |
2d8b0f3a | 1521 | fprintf (asm_out_file, "\t%s DW_CFA_restore, column 0x%lx", |
3f76745e JM |
1522 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); |
1523 | ||
1524 | fputc ('\n', asm_out_file); | |
1525 | } | |
1526 | else | |
1527 | { | |
1528 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, cfi->dw_cfi_opc); | |
c5cec899 | 1529 | if (flag_debug_asm) |
3f76745e JM |
1530 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
1531 | dwarf_cfi_name (cfi->dw_cfi_opc)); | |
1532 | ||
1533 | fputc ('\n', asm_out_file); | |
1534 | switch (cfi->dw_cfi_opc) | |
1535 | { | |
1536 | case DW_CFA_set_loc: | |
1537 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, cfi->dw_cfi_oprnd1.dw_cfi_addr); | |
1538 | fputc ('\n', asm_out_file); | |
1539 | break; | |
1540 | case DW_CFA_advance_loc1: | |
bb727b5a JM |
1541 | ASM_OUTPUT_DWARF_DELTA1 (asm_out_file, |
1542 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1543 | fde->dw_fde_current_label); | |
1544 | fputc ('\n', asm_out_file); | |
1545 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
3f76745e JM |
1546 | break; |
1547 | case DW_CFA_advance_loc2: | |
1548 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, | |
1549 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1550 | fde->dw_fde_current_label); | |
1551 | fputc ('\n', asm_out_file); | |
1552 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1553 | break; | |
1554 | case DW_CFA_advance_loc4: | |
1555 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, | |
1556 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1557 | fde->dw_fde_current_label); | |
1558 | fputc ('\n', asm_out_file); | |
1559 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1560 | break; | |
1561 | #ifdef MIPS_DEBUGGING_INFO | |
1562 | case DW_CFA_MIPS_advance_loc8: | |
1563 | /* TODO: not currently implemented. */ | |
1564 | abort (); | |
1565 | break; | |
1566 | #endif | |
1567 | case DW_CFA_offset_extended: | |
3f388b42 | 1568 | case DW_CFA_GNU_negative_offset_extended: |
3f76745e JM |
1569 | case DW_CFA_def_cfa: |
1570 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1571 | fputc ('\n', asm_out_file); | |
1572 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1573 | fputc ('\n', asm_out_file); | |
1574 | break; | |
1575 | case DW_CFA_restore_extended: | |
1576 | case DW_CFA_undefined: | |
1577 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1578 | fputc ('\n', asm_out_file); | |
1579 | break; | |
1580 | case DW_CFA_same_value: | |
1581 | case DW_CFA_def_cfa_register: | |
1582 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1583 | fputc ('\n', asm_out_file); | |
1584 | break; | |
1585 | case DW_CFA_register: | |
1586 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1587 | fputc ('\n', asm_out_file); | |
1588 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_reg_num); | |
1589 | fputc ('\n', asm_out_file); | |
1590 | break; | |
1591 | case DW_CFA_def_cfa_offset: | |
1592 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1593 | fputc ('\n', asm_out_file); | |
1594 | break; | |
c53aa195 JM |
1595 | case DW_CFA_GNU_window_save: |
1596 | break; | |
0021b564 JM |
1597 | case DW_CFA_GNU_args_size: |
1598 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1599 | fputc ('\n', asm_out_file); | |
1600 | break; | |
3f76745e JM |
1601 | default: |
1602 | break; | |
1603 | } | |
1604 | } | |
1605 | } | |
1606 | ||
1607 | /* Output the call frame information used to used to record information | |
1608 | that relates to calculating the frame pointer, and records the | |
1609 | location of saved registers. */ | |
1610 | ||
1611 | static void | |
1612 | output_call_frame_info (for_eh) | |
1613 | int for_eh; | |
1614 | { | |
2d8b0f3a | 1615 | register unsigned long i; |
3f76745e | 1616 | register dw_fde_ref fde; |
3f76745e | 1617 | register dw_cfi_ref cfi; |
a6ab3aad | 1618 | char l1[20], l2[20]; |
2ed2af28 PDM |
1619 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1620 | char ld[20]; | |
1621 | #endif | |
a6ab3aad JM |
1622 | |
1623 | /* Do we want to include a pointer to the exception table? */ | |
1624 | int eh_ptr = for_eh && exception_table_p (); | |
3f76745e | 1625 | |
3f76745e | 1626 | fputc ('\n', asm_out_file); |
e9e30253 | 1627 | |
aa0c1401 JL |
1628 | /* We're going to be generating comments, so turn on app. */ |
1629 | if (flag_debug_asm) | |
1630 | app_enable (); | |
956d6950 | 1631 | |
3f76745e JM |
1632 | if (for_eh) |
1633 | { | |
1634 | #ifdef EH_FRAME_SECTION | |
0021b564 | 1635 | EH_FRAME_SECTION (); |
3f76745e | 1636 | #else |
496651db | 1637 | tree label = get_file_function_name ('F'); |
0021b564 | 1638 | |
3167de5b | 1639 | force_data_section (); |
f4744807 | 1640 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); |
0021b564 JM |
1641 | ASM_GLOBALIZE_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); |
1642 | ASM_OUTPUT_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); | |
3f76745e JM |
1643 | #endif |
1644 | assemble_label ("__FRAME_BEGIN__"); | |
1645 | } | |
1646 | else | |
1647 | ASM_OUTPUT_SECTION (asm_out_file, FRAME_SECTION); | |
1648 | ||
1649 | /* Output the CIE. */ | |
a6ab3aad JM |
1650 | ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh); |
1651 | ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh); | |
2ed2af28 PDM |
1652 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1653 | ASM_GENERATE_INTERNAL_LABEL (ld, CIE_LENGTH_LABEL, for_eh); | |
1654 | if (for_eh) | |
7bb9fb0e | 1655 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1656 | else |
1657 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1658 | #else | |
267c09ab JM |
1659 | if (for_eh) |
1660 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1661 | else | |
1662 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1663 | #endif |
c5cec899 | 1664 | if (flag_debug_asm) |
3f76745e JM |
1665 | fprintf (asm_out_file, "\t%s Length of Common Information Entry", |
1666 | ASM_COMMENT_START); | |
1667 | ||
1668 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1669 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1670 | ||
d84e64d4 JM |
1671 | if (for_eh) |
1672 | /* Now that the CIE pointer is PC-relative for EH, | |
1673 | use 0 to identify the CIE. */ | |
1674 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); | |
1675 | else | |
1676 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1677 | ||
c5cec899 | 1678 | if (flag_debug_asm) |
3f76745e JM |
1679 | fprintf (asm_out_file, "\t%s CIE Identifier Tag", ASM_COMMENT_START); |
1680 | ||
1681 | fputc ('\n', asm_out_file); | |
d84e64d4 | 1682 | if (! for_eh && DWARF_OFFSET_SIZE == 8) |
3f76745e JM |
1683 | { |
1684 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1685 | fputc ('\n', asm_out_file); | |
1686 | } | |
1687 | ||
1688 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_CIE_VERSION); | |
c5cec899 | 1689 | if (flag_debug_asm) |
3f76745e JM |
1690 | fprintf (asm_out_file, "\t%s CIE Version", ASM_COMMENT_START); |
1691 | ||
1692 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1693 | if (eh_ptr) |
1694 | { | |
d84e64d4 JM |
1695 | /* The CIE contains a pointer to the exception region info for the |
1696 | frame. Make the augmentation string three bytes (including the | |
1697 | trailing null) so the pointer is 4-byte aligned. The Solaris ld | |
1698 | can't handle unaligned relocs. */ | |
c5cec899 | 1699 | if (flag_debug_asm) |
8d4e65a6 JL |
1700 | { |
1701 | ASM_OUTPUT_DWARF_STRING (asm_out_file, "eh"); | |
1702 | fprintf (asm_out_file, "\t%s CIE Augmentation", ASM_COMMENT_START); | |
1703 | } | |
1704 | else | |
1705 | { | |
c2c85462 | 1706 | ASM_OUTPUT_ASCII (asm_out_file, "eh", 3); |
8d4e65a6 | 1707 | } |
d84e64d4 JM |
1708 | fputc ('\n', asm_out_file); |
1709 | ||
1710 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, "__EXCEPTION_TABLE__"); | |
1711 | if (flag_debug_asm) | |
1712 | fprintf (asm_out_file, "\t%s pointer to exception region info", | |
1713 | ASM_COMMENT_START); | |
a6ab3aad JM |
1714 | } |
1715 | else | |
1716 | { | |
1717 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 1718 | if (flag_debug_asm) |
a6ab3aad JM |
1719 | fprintf (asm_out_file, "\t%s CIE Augmentation (none)", |
1720 | ASM_COMMENT_START); | |
1721 | } | |
3f76745e JM |
1722 | |
1723 | fputc ('\n', asm_out_file); | |
1724 | output_uleb128 (1); | |
c5cec899 | 1725 | if (flag_debug_asm) |
3f76745e JM |
1726 | fprintf (asm_out_file, " (CIE Code Alignment Factor)"); |
1727 | ||
1728 | fputc ('\n', asm_out_file); | |
1729 | output_sleb128 (DWARF_CIE_DATA_ALIGNMENT); | |
c5cec899 | 1730 | if (flag_debug_asm) |
3f76745e JM |
1731 | fprintf (asm_out_file, " (CIE Data Alignment Factor)"); |
1732 | ||
1733 | fputc ('\n', asm_out_file); | |
1734 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_FRAME_RETURN_COLUMN); | |
c5cec899 | 1735 | if (flag_debug_asm) |
3f76745e JM |
1736 | fprintf (asm_out_file, "\t%s CIE RA Column", ASM_COMMENT_START); |
1737 | ||
1738 | fputc ('\n', asm_out_file); | |
1739 | ||
1740 | for (cfi = cie_cfi_head; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1741 | output_cfi (cfi, NULL); | |
1742 | ||
1743 | /* Pad the CIE out to an address sized boundary. */ | |
a6ab3aad JM |
1744 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); |
1745 | ASM_OUTPUT_LABEL (asm_out_file, l2); | |
2ed2af28 PDM |
1746 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1747 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1748 | if (flag_debug_asm) |
1749 | fprintf (asm_out_file, "\t%s CIE Length Symbol", ASM_COMMENT_START); | |
1750 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1751 | #endif |
3f76745e JM |
1752 | |
1753 | /* Loop through all of the FDE's. */ | |
1754 | for (i = 0; i < fde_table_in_use; ++i) | |
1755 | { | |
1756 | fde = &fde_table[i]; | |
3f76745e | 1757 | |
a6ab3aad JM |
1758 | ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i*2); |
1759 | ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i*2); | |
2ed2af28 PDM |
1760 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1761 | ASM_GENERATE_INTERNAL_LABEL (ld, FDE_LENGTH_LABEL, for_eh + i*2); | |
1762 | if (for_eh) | |
7bb9fb0e | 1763 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1764 | else |
1765 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1766 | #else | |
267c09ab JM |
1767 | if (for_eh) |
1768 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1769 | else | |
1770 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1771 | #endif |
c5cec899 | 1772 | if (flag_debug_asm) |
3f76745e | 1773 | fprintf (asm_out_file, "\t%s FDE Length", ASM_COMMENT_START); |
3f76745e | 1774 | fputc ('\n', asm_out_file); |
a6ab3aad JM |
1775 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1776 | ||
eef906d6 JW |
1777 | /* ??? This always emits a 4 byte offset when for_eh is true, but it |
1778 | emits a target dependent sized offset when for_eh is not true. | |
1779 | This inconsistency may confuse gdb. The only case where we need a | |
1780 | non-4 byte offset is for the Irix6 N64 ABI, so we may lose SGI | |
1781 | compatibility if we emit a 4 byte offset. We need a 4 byte offset | |
1782 | though in order to be compatible with the dwarf_fde struct in frame.c. | |
1783 | If the for_eh case is changed, then the struct in frame.c has | |
1784 | to be adjusted appropriately. */ | |
3f76745e | 1785 | if (for_eh) |
21af493b | 1786 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l1, "__FRAME_BEGIN__"); |
3f76745e JM |
1787 | else |
1788 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (FRAME_SECTION)); | |
c5cec899 | 1789 | if (flag_debug_asm) |
3f76745e JM |
1790 | fprintf (asm_out_file, "\t%s FDE CIE offset", ASM_COMMENT_START); |
1791 | ||
1792 | fputc ('\n', asm_out_file); | |
1793 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, fde->dw_fde_begin); | |
c5cec899 | 1794 | if (flag_debug_asm) |
3f76745e JM |
1795 | fprintf (asm_out_file, "\t%s FDE initial location", ASM_COMMENT_START); |
1796 | ||
1797 | fputc ('\n', asm_out_file); | |
1798 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, | |
1799 | fde->dw_fde_end, fde->dw_fde_begin); | |
c5cec899 | 1800 | if (flag_debug_asm) |
3f76745e JM |
1801 | fprintf (asm_out_file, "\t%s FDE address range", ASM_COMMENT_START); |
1802 | ||
1803 | fputc ('\n', asm_out_file); | |
1804 | ||
1805 | /* Loop through the Call Frame Instructions associated with | |
1806 | this FDE. */ | |
1807 | fde->dw_fde_current_label = fde->dw_fde_begin; | |
1808 | for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1809 | output_cfi (cfi, fde); | |
1810 | ||
a6ab3aad JM |
1811 | /* Pad the FDE out to an address sized boundary. */ |
1812 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); | |
1813 | ASM_OUTPUT_LABEL (asm_out_file, l2); | |
2ed2af28 PDM |
1814 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1815 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1816 | if (flag_debug_asm) |
1817 | fprintf (asm_out_file, "\t%s FDE Length Symbol", ASM_COMMENT_START); | |
1818 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1819 | #endif |
3f76745e JM |
1820 | } |
1821 | #ifndef EH_FRAME_SECTION | |
1822 | if (for_eh) | |
1823 | { | |
1824 | /* Emit terminating zero for table. */ | |
267c09ab | 1825 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); |
3f76745e JM |
1826 | fputc ('\n', asm_out_file); |
1827 | } | |
1828 | #endif | |
a6ab3aad JM |
1829 | #ifdef MIPS_DEBUGGING_INFO |
1830 | /* Work around Irix 6 assembler bug whereby labels at the end of a section | |
1831 | get a value of 0. Putting .align 0 after the label fixes it. */ | |
1832 | ASM_OUTPUT_ALIGN (asm_out_file, 0); | |
1833 | #endif | |
aa0c1401 JL |
1834 | |
1835 | /* Turn off app to make assembly quicker. */ | |
1836 | if (flag_debug_asm) | |
1837 | app_disable (); | |
a6ab3aad JM |
1838 | } |
1839 | ||
3f76745e JM |
1840 | /* Output a marker (i.e. a label) for the beginning of a function, before |
1841 | the prologue. */ | |
1842 | ||
1843 | void | |
1844 | dwarf2out_begin_prologue () | |
1845 | { | |
1846 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
1847 | register dw_fde_ref fde; | |
1848 | ||
4f988ea2 JM |
1849 | ++current_funcdef_number; |
1850 | ||
3f76745e JM |
1851 | function_section (current_function_decl); |
1852 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL, | |
1853 | current_funcdef_number); | |
1854 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
1855 | ||
1856 | /* Expand the fde table if necessary. */ | |
1857 | if (fde_table_in_use == fde_table_allocated) | |
1858 | { | |
1859 | fde_table_allocated += FDE_TABLE_INCREMENT; | |
1860 | fde_table | |
1861 | = (dw_fde_ref) xrealloc (fde_table, | |
1862 | fde_table_allocated * sizeof (dw_fde_node)); | |
a3f97cbb | 1863 | } |
3f76745e JM |
1864 | |
1865 | /* Record the FDE associated with this function. */ | |
1866 | current_funcdef_fde = fde_table_in_use; | |
1867 | ||
1868 | /* Add the new FDE at the end of the fde_table. */ | |
1869 | fde = &fde_table[fde_table_in_use++]; | |
1870 | fde->dw_fde_begin = xstrdup (label); | |
1871 | fde->dw_fde_current_label = NULL; | |
1872 | fde->dw_fde_end = NULL; | |
1873 | fde->dw_fde_cfi = NULL; | |
0021b564 | 1874 | |
b57d9225 | 1875 | args_size = old_args_size = 0; |
3f76745e JM |
1876 | } |
1877 | ||
1878 | /* Output a marker (i.e. a label) for the absolute end of the generated code | |
1879 | for a function definition. This gets called *after* the epilogue code has | |
1880 | been generated. */ | |
1881 | ||
1882 | void | |
1883 | dwarf2out_end_epilogue () | |
1884 | { | |
1885 | dw_fde_ref fde; | |
1886 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
1887 | ||
1888 | /* Output a label to mark the endpoint of the code generated for this | |
1889 | function. */ | |
1890 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_END_LABEL, current_funcdef_number); | |
1891 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
1892 | fde = &fde_table[fde_table_in_use - 1]; | |
1893 | fde->dw_fde_end = xstrdup (label); | |
3f76745e JM |
1894 | } |
1895 | ||
1896 | void | |
1897 | dwarf2out_frame_init () | |
1898 | { | |
1899 | /* Allocate the initial hunk of the fde_table. */ | |
3de90026 | 1900 | fde_table = (dw_fde_ref) xcalloc (FDE_TABLE_INCREMENT, sizeof (dw_fde_node)); |
3f76745e JM |
1901 | fde_table_allocated = FDE_TABLE_INCREMENT; |
1902 | fde_table_in_use = 0; | |
1903 | ||
1904 | /* Generate the CFA instructions common to all FDE's. Do it now for the | |
1905 | sake of lookup_cfa. */ | |
1906 | ||
a6ab3aad | 1907 | #ifdef DWARF2_UNWIND_INFO |
91193900 AS |
1908 | /* On entry, the Canonical Frame Address is at SP. */ |
1909 | dwarf2out_def_cfa (NULL, STACK_POINTER_REGNUM, INCOMING_FRAME_SP_OFFSET); | |
1910 | initial_return_save (INCOMING_RETURN_ADDR_RTX); | |
3f76745e JM |
1911 | #endif |
1912 | } | |
1913 | ||
1914 | void | |
1915 | dwarf2out_frame_finish () | |
1916 | { | |
3f76745e | 1917 | /* Output call frame information. */ |
a6ab3aad | 1918 | #ifdef MIPS_DEBUGGING_INFO |
3f76745e JM |
1919 | if (write_symbols == DWARF2_DEBUG) |
1920 | output_call_frame_info (0); | |
14a774a9 | 1921 | if (flag_unwind_tables || (flag_exceptions && ! exceptions_via_longjmp)) |
3f76745e | 1922 | output_call_frame_info (1); |
a6ab3aad JM |
1923 | #else |
1924 | if (write_symbols == DWARF2_DEBUG | |
14a774a9 | 1925 | || flag_unwind_tables || (flag_exceptions && ! exceptions_via_longjmp)) |
a6ab3aad JM |
1926 | output_call_frame_info (1); |
1927 | #endif | |
3f76745e JM |
1928 | } |
1929 | ||
1930 | #endif /* .debug_frame support */ | |
1931 | ||
1932 | /* And now, the support for symbolic debugging information. */ | |
1933 | #ifdef DWARF2_DEBUGGING_INFO | |
1934 | ||
3f76745e JM |
1935 | /* NOTE: In the comments in this file, many references are made to |
1936 | "Debugging Information Entries". This term is abbreviated as `DIE' | |
1937 | throughout the remainder of this file. */ | |
1938 | ||
1939 | /* An internal representation of the DWARF output is built, and then | |
1940 | walked to generate the DWARF debugging info. The walk of the internal | |
1941 | representation is done after the entire program has been compiled. | |
1942 | The types below are used to describe the internal representation. */ | |
1943 | ||
1944 | /* Each DIE may have a series of attribute/value pairs. Values | |
1945 | can take on several forms. The forms that are used in this | |
1946 | implementation are listed below. */ | |
1947 | ||
1948 | typedef enum | |
1949 | { | |
1950 | dw_val_class_addr, | |
1951 | dw_val_class_loc, | |
1952 | dw_val_class_const, | |
1953 | dw_val_class_unsigned_const, | |
1954 | dw_val_class_long_long, | |
1955 | dw_val_class_float, | |
1956 | dw_val_class_flag, | |
1957 | dw_val_class_die_ref, | |
1958 | dw_val_class_fde_ref, | |
1959 | dw_val_class_lbl_id, | |
8b790721 | 1960 | dw_val_class_lbl_offset, |
3f76745e | 1961 | dw_val_class_str |
a3f97cbb | 1962 | } |
3f76745e | 1963 | dw_val_class; |
a3f97cbb | 1964 | |
3f76745e JM |
1965 | /* Various DIE's use offsets relative to the beginning of the |
1966 | .debug_info section to refer to each other. */ | |
71dfc51f | 1967 | |
3f76745e JM |
1968 | typedef long int dw_offset; |
1969 | ||
1970 | /* Define typedefs here to avoid circular dependencies. */ | |
1971 | ||
1972 | typedef struct die_struct *dw_die_ref; | |
1973 | typedef struct dw_attr_struct *dw_attr_ref; | |
1974 | typedef struct dw_val_struct *dw_val_ref; | |
1975 | typedef struct dw_line_info_struct *dw_line_info_ref; | |
1976 | typedef struct dw_separate_line_info_struct *dw_separate_line_info_ref; | |
1977 | typedef struct dw_loc_descr_struct *dw_loc_descr_ref; | |
1978 | typedef struct pubname_struct *pubname_ref; | |
1979 | typedef dw_die_ref *arange_ref; | |
1980 | ||
1981 | /* Describe a double word constant value. */ | |
1982 | ||
1983 | typedef struct dw_long_long_struct | |
a3f97cbb | 1984 | { |
3f76745e JM |
1985 | unsigned long hi; |
1986 | unsigned long low; | |
1987 | } | |
1988 | dw_long_long_const; | |
1989 | ||
1990 | /* Describe a floating point constant value. */ | |
1991 | ||
1992 | typedef struct dw_fp_struct | |
1993 | { | |
1994 | long *array; | |
1995 | unsigned length; | |
1996 | } | |
1997 | dw_float_const; | |
1998 | ||
1999 | /* Each entry in the line_info_table maintains the file and | |
956d6950 | 2000 | line number associated with the label generated for that |
3f76745e JM |
2001 | entry. The label gives the PC value associated with |
2002 | the line number entry. */ | |
2003 | ||
2004 | typedef struct dw_line_info_struct | |
2005 | { | |
2006 | unsigned long dw_file_num; | |
2007 | unsigned long dw_line_num; | |
2008 | } | |
2009 | dw_line_info_entry; | |
2010 | ||
2011 | /* Line information for functions in separate sections; each one gets its | |
2012 | own sequence. */ | |
2013 | typedef struct dw_separate_line_info_struct | |
2014 | { | |
2015 | unsigned long dw_file_num; | |
2016 | unsigned long dw_line_num; | |
2017 | unsigned long function; | |
2018 | } | |
2019 | dw_separate_line_info_entry; | |
2020 | ||
956d6950 | 2021 | /* The dw_val_node describes an attribute's value, as it is |
3f76745e JM |
2022 | represented internally. */ |
2023 | ||
2024 | typedef struct dw_val_struct | |
2025 | { | |
2026 | dw_val_class val_class; | |
2027 | union | |
a3f97cbb | 2028 | { |
1865dbb5 | 2029 | rtx val_addr; |
3f76745e JM |
2030 | dw_loc_descr_ref val_loc; |
2031 | long int val_int; | |
2032 | long unsigned val_unsigned; | |
2033 | dw_long_long_const val_long_long; | |
2034 | dw_float_const val_float; | |
2035 | dw_die_ref val_die_ref; | |
2036 | unsigned val_fde_index; | |
2037 | char *val_str; | |
2038 | char *val_lbl_id; | |
3f76745e | 2039 | unsigned char val_flag; |
a3f97cbb | 2040 | } |
3f76745e JM |
2041 | v; |
2042 | } | |
2043 | dw_val_node; | |
2044 | ||
2045 | /* Locations in memory are described using a sequence of stack machine | |
2046 | operations. */ | |
2047 | ||
2048 | typedef struct dw_loc_descr_struct | |
2049 | { | |
2050 | dw_loc_descr_ref dw_loc_next; | |
2051 | enum dwarf_location_atom dw_loc_opc; | |
2052 | dw_val_node dw_loc_oprnd1; | |
2053 | dw_val_node dw_loc_oprnd2; | |
2054 | } | |
2055 | dw_loc_descr_node; | |
2056 | ||
2057 | /* Each DIE attribute has a field specifying the attribute kind, | |
2058 | a link to the next attribute in the chain, and an attribute value. | |
2059 | Attributes are typically linked below the DIE they modify. */ | |
2060 | ||
2061 | typedef struct dw_attr_struct | |
2062 | { | |
2063 | enum dwarf_attribute dw_attr; | |
2064 | dw_attr_ref dw_attr_next; | |
2065 | dw_val_node dw_attr_val; | |
2066 | } | |
2067 | dw_attr_node; | |
2068 | ||
2069 | /* The Debugging Information Entry (DIE) structure */ | |
2070 | ||
2071 | typedef struct die_struct | |
2072 | { | |
2073 | enum dwarf_tag die_tag; | |
2074 | dw_attr_ref die_attr; | |
3f76745e JM |
2075 | dw_die_ref die_parent; |
2076 | dw_die_ref die_child; | |
3f76745e JM |
2077 | dw_die_ref die_sib; |
2078 | dw_offset die_offset; | |
2079 | unsigned long die_abbrev; | |
a3f97cbb | 2080 | } |
3f76745e JM |
2081 | die_node; |
2082 | ||
2083 | /* The pubname structure */ | |
2084 | ||
2085 | typedef struct pubname_struct | |
2086 | { | |
2087 | dw_die_ref die; | |
2088 | char * name; | |
2089 | } | |
2090 | pubname_entry; | |
2091 | ||
ef76d03b JW |
2092 | /* The limbo die list structure. */ |
2093 | typedef struct limbo_die_struct | |
2094 | { | |
2095 | dw_die_ref die; | |
2096 | struct limbo_die_struct *next; | |
2097 | } | |
2098 | limbo_die_node; | |
2099 | ||
3f76745e JM |
2100 | /* How to start an assembler comment. */ |
2101 | #ifndef ASM_COMMENT_START | |
2102 | #define ASM_COMMENT_START ";#" | |
2103 | #endif | |
2104 | ||
2105 | /* Define a macro which returns non-zero for a TYPE_DECL which was | |
2106 | implicitly generated for a tagged type. | |
2107 | ||
2108 | Note that unlike the gcc front end (which generates a NULL named | |
2109 | TYPE_DECL node for each complete tagged type, each array type, and | |
2110 | each function type node created) the g++ front end generates a | |
2111 | _named_ TYPE_DECL node for each tagged type node created. | |
2112 | These TYPE_DECLs have DECL_ARTIFICIAL set, so we know not to | |
2113 | generate a DW_TAG_typedef DIE for them. */ | |
2114 | ||
2115 | #define TYPE_DECL_IS_STUB(decl) \ | |
2116 | (DECL_NAME (decl) == NULL_TREE \ | |
2117 | || (DECL_ARTIFICIAL (decl) \ | |
2118 | && is_tagged_type (TREE_TYPE (decl)) \ | |
ef76d03b JW |
2119 | && ((decl == TYPE_STUB_DECL (TREE_TYPE (decl))) \ |
2120 | /* This is necessary for stub decls that \ | |
2121 | appear in nested inline functions. */ \ | |
2122 | || (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE \ | |
2123 | && (decl_ultimate_origin (decl) \ | |
2124 | == TYPE_STUB_DECL (TREE_TYPE (decl))))))) | |
3f76745e JM |
2125 | |
2126 | /* Information concerning the compilation unit's programming | |
2127 | language, and compiler version. */ | |
2128 | ||
2129 | extern int flag_traditional; | |
3f76745e JM |
2130 | |
2131 | /* Fixed size portion of the DWARF compilation unit header. */ | |
2132 | #define DWARF_COMPILE_UNIT_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 3) | |
2133 | ||
2134 | /* Fixed size portion of debugging line information prolog. */ | |
2135 | #define DWARF_LINE_PROLOG_HEADER_SIZE 5 | |
2136 | ||
2137 | /* Fixed size portion of public names info. */ | |
2138 | #define DWARF_PUBNAMES_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2) | |
2139 | ||
2140 | /* Fixed size portion of the address range info. */ | |
2141 | #define DWARF_ARANGES_HEADER_SIZE \ | |
2142 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, PTR_SIZE * 2) - DWARF_OFFSET_SIZE) | |
2143 | ||
b2244e22 JW |
2144 | /* The default is to have gcc emit the line number tables. */ |
2145 | #ifndef DWARF2_ASM_LINE_DEBUG_INFO | |
2146 | #define DWARF2_ASM_LINE_DEBUG_INFO 0 | |
2147 | #endif | |
2148 | ||
3f76745e JM |
2149 | /* Define the architecture-dependent minimum instruction length (in bytes). |
2150 | In this implementation of DWARF, this field is used for information | |
2151 | purposes only. Since GCC generates assembly language, we have | |
2152 | no a priori knowledge of how many instruction bytes are generated | |
2153 | for each source line, and therefore can use only the DW_LNE_set_address | |
2154 | and DW_LNS_fixed_advance_pc line information commands. */ | |
2155 | ||
2156 | #ifndef DWARF_LINE_MIN_INSTR_LENGTH | |
2157 | #define DWARF_LINE_MIN_INSTR_LENGTH 4 | |
2158 | #endif | |
2159 | ||
2160 | /* Minimum line offset in a special line info. opcode. | |
2161 | This value was chosen to give a reasonable range of values. */ | |
2162 | #define DWARF_LINE_BASE -10 | |
2163 | ||
2164 | /* First special line opcde - leave room for the standard opcodes. */ | |
2165 | #define DWARF_LINE_OPCODE_BASE 10 | |
2166 | ||
2167 | /* Range of line offsets in a special line info. opcode. */ | |
2168 | #define DWARF_LINE_RANGE (254-DWARF_LINE_OPCODE_BASE+1) | |
2169 | ||
2170 | /* Flag that indicates the initial value of the is_stmt_start flag. | |
2171 | In the present implementation, we do not mark any lines as | |
2172 | the beginning of a source statement, because that information | |
2173 | is not made available by the GCC front-end. */ | |
2174 | #define DWARF_LINE_DEFAULT_IS_STMT_START 1 | |
2175 | ||
2176 | /* This location is used by calc_die_sizes() to keep track | |
2177 | the offset of each DIE within the .debug_info section. */ | |
2178 | static unsigned long next_die_offset; | |
2179 | ||
2180 | /* Record the root of the DIE's built for the current compilation unit. */ | |
2181 | static dw_die_ref comp_unit_die; | |
2182 | ||
ef76d03b JW |
2183 | /* A list of DIEs with a NULL parent waiting to be relocated. */ |
2184 | static limbo_die_node *limbo_die_list = 0; | |
3f76745e JM |
2185 | |
2186 | /* Pointer to an array of filenames referenced by this compilation unit. */ | |
2187 | static char **file_table; | |
2188 | ||
2189 | /* Total number of entries in the table (i.e. array) pointed to by | |
2190 | `file_table'. This is the *total* and includes both used and unused | |
2191 | slots. */ | |
2192 | static unsigned file_table_allocated; | |
a3f97cbb | 2193 | |
3f76745e JM |
2194 | /* Number of entries in the file_table which are actually in use. */ |
2195 | static unsigned file_table_in_use; | |
71dfc51f | 2196 | |
3f76745e JM |
2197 | /* Size (in elements) of increments by which we may expand the filename |
2198 | table. */ | |
2199 | #define FILE_TABLE_INCREMENT 64 | |
71dfc51f | 2200 | |
3f76745e JM |
2201 | /* Local pointer to the name of the main input file. Initialized in |
2202 | dwarf2out_init. */ | |
2203 | static char *primary_filename; | |
a3f97cbb | 2204 | |
3f76745e JM |
2205 | /* For Dwarf output, we must assign lexical-blocks id numbers in the order in |
2206 | which their beginnings are encountered. We output Dwarf debugging info | |
2207 | that refers to the beginnings and ends of the ranges of code for each | |
2208 | lexical block. The labels themselves are generated in final.c, which | |
2209 | assigns numbers to the blocks in the same way. */ | |
2210 | static unsigned next_block_number = 2; | |
a3f97cbb | 2211 | |
3f76745e JM |
2212 | /* A pointer to the base of a table of references to DIE's that describe |
2213 | declarations. The table is indexed by DECL_UID() which is a unique | |
956d6950 | 2214 | number identifying each decl. */ |
3f76745e | 2215 | static dw_die_ref *decl_die_table; |
71dfc51f | 2216 | |
3f76745e JM |
2217 | /* Number of elements currently allocated for the decl_die_table. */ |
2218 | static unsigned decl_die_table_allocated; | |
a3f97cbb | 2219 | |
3f76745e JM |
2220 | /* Number of elements in decl_die_table currently in use. */ |
2221 | static unsigned decl_die_table_in_use; | |
71dfc51f | 2222 | |
3f76745e JM |
2223 | /* Size (in elements) of increments by which we may expand the |
2224 | decl_die_table. */ | |
2225 | #define DECL_DIE_TABLE_INCREMENT 256 | |
a3f97cbb | 2226 | |
3f76745e JM |
2227 | /* A pointer to the base of a table of references to declaration |
2228 | scopes. This table is a display which tracks the nesting | |
2229 | of declaration scopes at the current scope and containing | |
2230 | scopes. This table is used to find the proper place to | |
2231 | define type declaration DIE's. */ | |
777ad4c2 | 2232 | static tree *decl_scope_table; |
a3f97cbb | 2233 | |
3f76745e | 2234 | /* Number of elements currently allocated for the decl_scope_table. */ |
e3e7774e | 2235 | static int decl_scope_table_allocated; |
71dfc51f | 2236 | |
956d6950 | 2237 | /* Current level of nesting of declaration scopes. */ |
e3e7774e | 2238 | static int decl_scope_depth; |
bdb669cb | 2239 | |
3f76745e JM |
2240 | /* Size (in elements) of increments by which we may expand the |
2241 | decl_scope_table. */ | |
2242 | #define DECL_SCOPE_TABLE_INCREMENT 64 | |
bdb669cb | 2243 | |
3f76745e JM |
2244 | /* A pointer to the base of a list of references to DIE's that |
2245 | are uniquely identified by their tag, presence/absence of | |
2246 | children DIE's, and list of attribute/value pairs. */ | |
2247 | static dw_die_ref *abbrev_die_table; | |
71dfc51f | 2248 | |
3f76745e JM |
2249 | /* Number of elements currently allocated for abbrev_die_table. */ |
2250 | static unsigned abbrev_die_table_allocated; | |
bdb669cb | 2251 | |
3f76745e JM |
2252 | /* Number of elements in type_die_table currently in use. */ |
2253 | static unsigned abbrev_die_table_in_use; | |
bdb669cb | 2254 | |
3f76745e JM |
2255 | /* Size (in elements) of increments by which we may expand the |
2256 | abbrev_die_table. */ | |
2257 | #define ABBREV_DIE_TABLE_INCREMENT 256 | |
71dfc51f | 2258 | |
3f76745e JM |
2259 | /* A pointer to the base of a table that contains line information |
2260 | for each source code line in .text in the compilation unit. */ | |
2261 | static dw_line_info_ref line_info_table; | |
a3f97cbb | 2262 | |
3f76745e JM |
2263 | /* Number of elements currently allocated for line_info_table. */ |
2264 | static unsigned line_info_table_allocated; | |
71dfc51f | 2265 | |
3f76745e JM |
2266 | /* Number of elements in separate_line_info_table currently in use. */ |
2267 | static unsigned separate_line_info_table_in_use; | |
71dfc51f | 2268 | |
3f76745e JM |
2269 | /* A pointer to the base of a table that contains line information |
2270 | for each source code line outside of .text in the compilation unit. */ | |
2271 | static dw_separate_line_info_ref separate_line_info_table; | |
a3f97cbb | 2272 | |
3f76745e JM |
2273 | /* Number of elements currently allocated for separate_line_info_table. */ |
2274 | static unsigned separate_line_info_table_allocated; | |
71dfc51f | 2275 | |
3f76745e JM |
2276 | /* Number of elements in line_info_table currently in use. */ |
2277 | static unsigned line_info_table_in_use; | |
71dfc51f | 2278 | |
3f76745e JM |
2279 | /* Size (in elements) of increments by which we may expand the |
2280 | line_info_table. */ | |
2281 | #define LINE_INFO_TABLE_INCREMENT 1024 | |
a3f97cbb | 2282 | |
3f76745e JM |
2283 | /* A pointer to the base of a table that contains a list of publicly |
2284 | accessible names. */ | |
2285 | static pubname_ref pubname_table; | |
71dfc51f | 2286 | |
3f76745e JM |
2287 | /* Number of elements currently allocated for pubname_table. */ |
2288 | static unsigned pubname_table_allocated; | |
2289 | ||
2290 | /* Number of elements in pubname_table currently in use. */ | |
2291 | static unsigned pubname_table_in_use; | |
2292 | ||
2293 | /* Size (in elements) of increments by which we may expand the | |
2294 | pubname_table. */ | |
2295 | #define PUBNAME_TABLE_INCREMENT 64 | |
2296 | ||
2297 | /* A pointer to the base of a table that contains a list of publicly | |
2298 | accessible names. */ | |
2299 | static arange_ref arange_table; | |
71dfc51f | 2300 | |
3f76745e JM |
2301 | /* Number of elements currently allocated for arange_table. */ |
2302 | static unsigned arange_table_allocated; | |
a3f97cbb | 2303 | |
3f76745e JM |
2304 | /* Number of elements in arange_table currently in use. */ |
2305 | static unsigned arange_table_in_use; | |
71dfc51f | 2306 | |
3f76745e JM |
2307 | /* Size (in elements) of increments by which we may expand the |
2308 | arange_table. */ | |
2309 | #define ARANGE_TABLE_INCREMENT 64 | |
71dfc51f | 2310 | |
8a8c3656 JM |
2311 | /* A pointer to the base of a list of incomplete types which might be |
2312 | completed at some later time. */ | |
2313 | ||
2314 | static tree *incomplete_types_list; | |
2315 | ||
2316 | /* Number of elements currently allocated for the incomplete_types_list. */ | |
2317 | static unsigned incomplete_types_allocated; | |
2318 | ||
2319 | /* Number of elements of incomplete_types_list currently in use. */ | |
2320 | static unsigned incomplete_types; | |
2321 | ||
2322 | /* Size (in elements) of increments by which we may expand the incomplete | |
2323 | types list. Actually, a single hunk of space of this size should | |
2324 | be enough for most typical programs. */ | |
2325 | #define INCOMPLETE_TYPES_INCREMENT 64 | |
2326 | ||
3f76745e JM |
2327 | /* Record whether the function being analyzed contains inlined functions. */ |
2328 | static int current_function_has_inlines; | |
2d8b0f3a | 2329 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
3f76745e | 2330 | static int comp_unit_has_inlines; |
2d8b0f3a | 2331 | #endif |
71dfc51f | 2332 | |
1865dbb5 JM |
2333 | /* Array of RTXes referenced by the debugging information, which therefore |
2334 | must be kept around forever. We do this rather than perform GC on | |
2335 | the dwarf info because almost all of the dwarf info lives forever, and | |
2336 | it's easier to support non-GC frontends this way. */ | |
2337 | static varray_type used_rtx_varray; | |
2338 | ||
3f76745e | 2339 | /* Forward declarations for functions defined in this file. */ |
71dfc51f | 2340 | |
83d2b3b9 KG |
2341 | static int is_pseudo_reg PARAMS ((rtx)); |
2342 | static tree type_main_variant PARAMS ((tree)); | |
2343 | static int is_tagged_type PARAMS ((tree)); | |
2344 | static const char *dwarf_tag_name PARAMS ((unsigned)); | |
2345 | static const char *dwarf_attr_name PARAMS ((unsigned)); | |
2346 | static const char *dwarf_form_name PARAMS ((unsigned)); | |
2347 | static const char *dwarf_stack_op_name PARAMS ((unsigned)); | |
487a6e06 | 2348 | #if 0 |
83d2b3b9 KG |
2349 | static const char *dwarf_type_encoding_name PARAMS ((unsigned)); |
2350 | #endif | |
2351 | static tree decl_ultimate_origin PARAMS ((tree)); | |
2352 | static tree block_ultimate_origin PARAMS ((tree)); | |
2353 | static tree decl_class_context PARAMS ((tree)); | |
2354 | static void add_dwarf_attr PARAMS ((dw_die_ref, dw_attr_ref)); | |
2355 | static void add_AT_flag PARAMS ((dw_die_ref, | |
2356 | enum dwarf_attribute, | |
2357 | unsigned)); | |
2358 | static void add_AT_int PARAMS ((dw_die_ref, | |
2359 | enum dwarf_attribute, long)); | |
2360 | static void add_AT_unsigned PARAMS ((dw_die_ref, | |
2361 | enum dwarf_attribute, | |
2362 | unsigned long)); | |
2363 | static void add_AT_long_long PARAMS ((dw_die_ref, | |
2364 | enum dwarf_attribute, | |
2365 | unsigned long, | |
2366 | unsigned long)); | |
2367 | static void add_AT_float PARAMS ((dw_die_ref, | |
2368 | enum dwarf_attribute, | |
2369 | unsigned, long *)); | |
2370 | static void add_AT_string PARAMS ((dw_die_ref, | |
2371 | enum dwarf_attribute, | |
2372 | const char *)); | |
2373 | static void add_AT_die_ref PARAMS ((dw_die_ref, | |
2374 | enum dwarf_attribute, | |
2375 | dw_die_ref)); | |
2376 | static void add_AT_fde_ref PARAMS ((dw_die_ref, | |
2377 | enum dwarf_attribute, | |
2378 | unsigned)); | |
2379 | static void add_AT_loc PARAMS ((dw_die_ref, | |
2380 | enum dwarf_attribute, | |
2381 | dw_loc_descr_ref)); | |
2382 | static void add_AT_addr PARAMS ((dw_die_ref, | |
2383 | enum dwarf_attribute, | |
1865dbb5 | 2384 | rtx)); |
83d2b3b9 KG |
2385 | static void add_AT_lbl_id PARAMS ((dw_die_ref, |
2386 | enum dwarf_attribute, | |
2387 | char *)); | |
2388 | static void add_AT_lbl_offset PARAMS ((dw_die_ref, | |
2389 | enum dwarf_attribute, | |
2390 | char *)); | |
2391 | static dw_attr_ref get_AT PARAMS ((dw_die_ref, | |
2392 | enum dwarf_attribute)); | |
2393 | static const char *get_AT_low_pc PARAMS ((dw_die_ref)); | |
2394 | static const char *get_AT_hi_pc PARAMS ((dw_die_ref)); | |
2395 | static const char *get_AT_string PARAMS ((dw_die_ref, | |
2396 | enum dwarf_attribute)); | |
2397 | static int get_AT_flag PARAMS ((dw_die_ref, | |
2398 | enum dwarf_attribute)); | |
2399 | static unsigned get_AT_unsigned PARAMS ((dw_die_ref, | |
2400 | enum dwarf_attribute)); | |
2401 | static int is_c_family PARAMS ((void)); | |
2402 | static int is_fortran PARAMS ((void)); | |
2403 | static void remove_AT PARAMS ((dw_die_ref, | |
2404 | enum dwarf_attribute)); | |
2405 | static void remove_children PARAMS ((dw_die_ref)); | |
2406 | static void add_child_die PARAMS ((dw_die_ref, dw_die_ref)); | |
2407 | static dw_die_ref new_die PARAMS ((enum dwarf_tag, dw_die_ref)); | |
2408 | static dw_die_ref lookup_type_die PARAMS ((tree)); | |
2409 | static void equate_type_number_to_die PARAMS ((tree, dw_die_ref)); | |
2410 | static dw_die_ref lookup_decl_die PARAMS ((tree)); | |
2411 | static void equate_decl_number_to_die PARAMS ((tree, dw_die_ref)); | |
2412 | static dw_loc_descr_ref new_loc_descr PARAMS ((enum dwarf_location_atom, | |
2413 | unsigned long, | |
2414 | unsigned long)); | |
2415 | static void add_loc_descr PARAMS ((dw_loc_descr_ref *, | |
2416 | dw_loc_descr_ref)); | |
2417 | static void print_spaces PARAMS ((FILE *)); | |
2418 | static void print_die PARAMS ((dw_die_ref, FILE *)); | |
2419 | static void print_dwarf_line_table PARAMS ((FILE *)); | |
2420 | static void add_sibling_attributes PARAMS ((dw_die_ref)); | |
2421 | static void build_abbrev_table PARAMS ((dw_die_ref)); | |
2422 | static unsigned long size_of_string PARAMS ((const char *)); | |
2423 | static unsigned long size_of_loc_descr PARAMS ((dw_loc_descr_ref)); | |
2424 | static unsigned long size_of_locs PARAMS ((dw_loc_descr_ref)); | |
2425 | static int constant_size PARAMS ((long unsigned)); | |
2426 | static unsigned long size_of_die PARAMS ((dw_die_ref)); | |
2427 | static void calc_die_sizes PARAMS ((dw_die_ref)); | |
2428 | static unsigned long size_of_line_prolog PARAMS ((void)); | |
2429 | static unsigned long size_of_pubnames PARAMS ((void)); | |
2430 | static unsigned long size_of_aranges PARAMS ((void)); | |
2431 | static enum dwarf_form value_format PARAMS ((dw_attr_ref)); | |
2432 | static void output_value_format PARAMS ((dw_attr_ref)); | |
2433 | static void output_abbrev_section PARAMS ((void)); | |
2434 | static void output_loc_operands PARAMS ((dw_loc_descr_ref)); | |
2435 | static void output_die PARAMS ((dw_die_ref)); | |
2436 | static void output_compilation_unit_header PARAMS ((void)); | |
2437 | static const char *dwarf2_name PARAMS ((tree, int)); | |
2438 | static void add_pubname PARAMS ((tree, dw_die_ref)); | |
2439 | static void output_pubnames PARAMS ((void)); | |
2440 | static void add_arange PARAMS ((tree, dw_die_ref)); | |
2441 | static void output_aranges PARAMS ((void)); | |
2442 | static void output_line_info PARAMS ((void)); | |
2443 | static int is_body_block PARAMS ((tree)); | |
2444 | static dw_die_ref base_type_die PARAMS ((tree)); | |
2445 | static tree root_type PARAMS ((tree)); | |
2446 | static int is_base_type PARAMS ((tree)); | |
2447 | static dw_die_ref modified_type_die PARAMS ((tree, int, int, dw_die_ref)); | |
2448 | static int type_is_enum PARAMS ((tree)); | |
2449 | static dw_loc_descr_ref reg_loc_descriptor PARAMS ((rtx)); | |
2450 | static dw_loc_descr_ref based_loc_descr PARAMS ((unsigned, long)); | |
2451 | static int is_based_loc PARAMS ((rtx)); | |
2452 | static dw_loc_descr_ref mem_loc_descriptor PARAMS ((rtx, enum machine_mode mode)); | |
2453 | static dw_loc_descr_ref concat_loc_descriptor PARAMS ((rtx, rtx)); | |
2454 | static dw_loc_descr_ref loc_descriptor PARAMS ((rtx)); | |
2455 | static unsigned ceiling PARAMS ((unsigned, unsigned)); | |
2456 | static tree field_type PARAMS ((tree)); | |
2457 | static unsigned simple_type_align_in_bits PARAMS ((tree)); | |
2458 | static unsigned simple_type_size_in_bits PARAMS ((tree)); | |
2459 | static unsigned field_byte_offset PARAMS ((tree)); | |
2460 | static void add_AT_location_description PARAMS ((dw_die_ref, | |
2461 | enum dwarf_attribute, rtx)); | |
2462 | static void add_data_member_location_attribute PARAMS ((dw_die_ref, tree)); | |
2463 | static void add_const_value_attribute PARAMS ((dw_die_ref, rtx)); | |
2464 | static void add_location_or_const_value_attribute PARAMS ((dw_die_ref, tree)); | |
2465 | static void add_name_attribute PARAMS ((dw_die_ref, const char *)); | |
2466 | static void add_bound_info PARAMS ((dw_die_ref, | |
2467 | enum dwarf_attribute, tree)); | |
2468 | static void add_subscript_info PARAMS ((dw_die_ref, tree)); | |
2469 | static void add_byte_size_attribute PARAMS ((dw_die_ref, tree)); | |
2470 | static void add_bit_offset_attribute PARAMS ((dw_die_ref, tree)); | |
2471 | static void add_bit_size_attribute PARAMS ((dw_die_ref, tree)); | |
2472 | static void add_prototyped_attribute PARAMS ((dw_die_ref, tree)); | |
2473 | static void add_abstract_origin_attribute PARAMS ((dw_die_ref, tree)); | |
2474 | static void add_pure_or_virtual_attribute PARAMS ((dw_die_ref, tree)); | |
2475 | static void add_src_coords_attributes PARAMS ((dw_die_ref, tree)); | |
2476 | static void add_name_and_src_coords_attributes PARAMS ((dw_die_ref, tree)); | |
2477 | static void push_decl_scope PARAMS ((tree)); | |
2478 | static dw_die_ref scope_die_for PARAMS ((tree, dw_die_ref)); | |
2479 | static void pop_decl_scope PARAMS ((void)); | |
2480 | static void add_type_attribute PARAMS ((dw_die_ref, tree, int, int, | |
2481 | dw_die_ref)); | |
2482 | static char *type_tag PARAMS ((tree)); | |
2483 | static tree member_declared_type PARAMS ((tree)); | |
487a6e06 | 2484 | #if 0 |
83d2b3b9 | 2485 | static char *decl_start_label PARAMS ((tree)); |
487a6e06 | 2486 | #endif |
83d2b3b9 KG |
2487 | static void gen_array_type_die PARAMS ((tree, dw_die_ref)); |
2488 | static void gen_set_type_die PARAMS ((tree, dw_die_ref)); | |
d6f4ec51 | 2489 | #if 0 |
83d2b3b9 KG |
2490 | static void gen_entry_point_die PARAMS ((tree, dw_die_ref)); |
2491 | #endif | |
2492 | static void gen_inlined_enumeration_type_die PARAMS ((tree, dw_die_ref)); | |
2493 | static void gen_inlined_structure_type_die PARAMS ((tree, dw_die_ref)); | |
2494 | static void gen_inlined_union_type_die PARAMS ((tree, dw_die_ref)); | |
2495 | static void gen_enumeration_type_die PARAMS ((tree, dw_die_ref)); | |
2496 | static dw_die_ref gen_formal_parameter_die PARAMS ((tree, dw_die_ref)); | |
2497 | static void gen_unspecified_parameters_die PARAMS ((tree, dw_die_ref)); | |
2498 | static void gen_formal_types_die PARAMS ((tree, dw_die_ref)); | |
2499 | static void gen_subprogram_die PARAMS ((tree, dw_die_ref)); | |
2500 | static void gen_variable_die PARAMS ((tree, dw_die_ref)); | |
2501 | static void gen_label_die PARAMS ((tree, dw_die_ref)); | |
2502 | static void gen_lexical_block_die PARAMS ((tree, dw_die_ref, int)); | |
2503 | static void gen_inlined_subroutine_die PARAMS ((tree, dw_die_ref, int)); | |
2504 | static void gen_field_die PARAMS ((tree, dw_die_ref)); | |
2505 | static void gen_ptr_to_mbr_type_die PARAMS ((tree, dw_die_ref)); | |
2506 | static dw_die_ref gen_compile_unit_die PARAMS ((const char *)); | |
2507 | static void gen_string_type_die PARAMS ((tree, dw_die_ref)); | |
2508 | static void gen_inheritance_die PARAMS ((tree, dw_die_ref)); | |
2509 | static void gen_member_die PARAMS ((tree, dw_die_ref)); | |
2510 | static void gen_struct_or_union_type_die PARAMS ((tree, dw_die_ref)); | |
2511 | static void gen_subroutine_type_die PARAMS ((tree, dw_die_ref)); | |
2512 | static void gen_typedef_die PARAMS ((tree, dw_die_ref)); | |
2513 | static void gen_type_die PARAMS ((tree, dw_die_ref)); | |
2514 | static void gen_tagged_type_instantiation_die PARAMS ((tree, dw_die_ref)); | |
2515 | static void gen_block_die PARAMS ((tree, dw_die_ref, int)); | |
2516 | static void decls_for_scope PARAMS ((tree, dw_die_ref, int)); | |
2517 | static int is_redundant_typedef PARAMS ((tree)); | |
2518 | static void gen_decl_die PARAMS ((tree, dw_die_ref)); | |
2519 | static unsigned lookup_filename PARAMS ((const char *)); | |
2520 | static void add_incomplete_type PARAMS ((tree)); | |
2521 | static void retry_incomplete_types PARAMS ((void)); | |
2522 | static void gen_type_die_for_member PARAMS ((tree, tree, dw_die_ref)); | |
2523 | static void gen_abstract_function PARAMS ((tree)); | |
c6991660 KG |
2524 | static rtx save_rtx PARAMS ((rtx)); |
2525 | static void splice_child_die PARAMS ((dw_die_ref, dw_die_ref)); | |
2526 | static void reverse_die_lists PARAMS ((dw_die_ref)); | |
71dfc51f | 2527 | |
3f76745e | 2528 | /* Section names used to hold DWARF debugging information. */ |
c53aa195 JM |
2529 | #ifndef DEBUG_INFO_SECTION |
2530 | #define DEBUG_INFO_SECTION ".debug_info" | |
3f76745e JM |
2531 | #endif |
2532 | #ifndef ABBREV_SECTION | |
2533 | #define ABBREV_SECTION ".debug_abbrev" | |
2534 | #endif | |
2535 | #ifndef ARANGES_SECTION | |
2536 | #define ARANGES_SECTION ".debug_aranges" | |
2537 | #endif | |
2538 | #ifndef DW_MACINFO_SECTION | |
2539 | #define DW_MACINFO_SECTION ".debug_macinfo" | |
2540 | #endif | |
c53aa195 JM |
2541 | #ifndef DEBUG_LINE_SECTION |
2542 | #define DEBUG_LINE_SECTION ".debug_line" | |
3f76745e JM |
2543 | #endif |
2544 | #ifndef LOC_SECTION | |
2545 | #define LOC_SECTION ".debug_loc" | |
2546 | #endif | |
2547 | #ifndef PUBNAMES_SECTION | |
2548 | #define PUBNAMES_SECTION ".debug_pubnames" | |
2549 | #endif | |
2550 | #ifndef STR_SECTION | |
2551 | #define STR_SECTION ".debug_str" | |
2552 | #endif | |
a3f97cbb | 2553 | |
956d6950 | 2554 | /* Standard ELF section names for compiled code and data. */ |
3f76745e JM |
2555 | #ifndef TEXT_SECTION |
2556 | #define TEXT_SECTION ".text" | |
2557 | #endif | |
2558 | #ifndef DATA_SECTION | |
2559 | #define DATA_SECTION ".data" | |
2560 | #endif | |
2561 | #ifndef BSS_SECTION | |
2562 | #define BSS_SECTION ".bss" | |
2563 | #endif | |
71dfc51f | 2564 | |
8b790721 JM |
2565 | /* Labels we insert at beginning sections we can reference instead of |
2566 | the section names themselves. */ | |
2567 | ||
2568 | #ifndef TEXT_SECTION_LABEL | |
2569 | #define TEXT_SECTION_LABEL "Ltext" | |
2570 | #endif | |
2571 | #ifndef DEBUG_LINE_SECTION_LABEL | |
2572 | #define DEBUG_LINE_SECTION_LABEL "Ldebug_line" | |
2573 | #endif | |
2574 | #ifndef DEBUG_INFO_SECTION_LABEL | |
2575 | #define DEBUG_INFO_SECTION_LABEL "Ldebug_info" | |
2576 | #endif | |
2577 | #ifndef ABBREV_SECTION_LABEL | |
2578 | #define ABBREV_SECTION_LABEL "Ldebug_abbrev" | |
2579 | #endif | |
2580 | ||
a3f97cbb | 2581 | |
3f76745e JM |
2582 | /* Definitions of defaults for formats and names of various special |
2583 | (artificial) labels which may be generated within this file (when the -g | |
2584 | options is used and DWARF_DEBUGGING_INFO is in effect. | |
2585 | If necessary, these may be overridden from within the tm.h file, but | |
2586 | typically, overriding these defaults is unnecessary. */ | |
a3f97cbb | 2587 | |
257ebd1f | 2588 | static char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
8b790721 JM |
2589 | static char text_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
2590 | static char abbrev_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
2591 | static char debug_info_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
2592 | static char debug_line_section_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f | 2593 | |
3f76745e JM |
2594 | #ifndef TEXT_END_LABEL |
2595 | #define TEXT_END_LABEL "Letext" | |
2596 | #endif | |
2597 | #ifndef DATA_END_LABEL | |
2598 | #define DATA_END_LABEL "Ledata" | |
2599 | #endif | |
2600 | #ifndef BSS_END_LABEL | |
2601 | #define BSS_END_LABEL "Lebss" | |
2602 | #endif | |
2603 | #ifndef INSN_LABEL_FMT | |
2604 | #define INSN_LABEL_FMT "LI%u_" | |
2605 | #endif | |
2606 | #ifndef BLOCK_BEGIN_LABEL | |
2607 | #define BLOCK_BEGIN_LABEL "LBB" | |
2608 | #endif | |
2609 | #ifndef BLOCK_END_LABEL | |
2610 | #define BLOCK_END_LABEL "LBE" | |
2611 | #endif | |
2612 | #ifndef BODY_BEGIN_LABEL | |
2613 | #define BODY_BEGIN_LABEL "Lbb" | |
2614 | #endif | |
2615 | #ifndef BODY_END_LABEL | |
2616 | #define BODY_END_LABEL "Lbe" | |
2617 | #endif | |
2618 | #ifndef LINE_CODE_LABEL | |
2619 | #define LINE_CODE_LABEL "LM" | |
2620 | #endif | |
2621 | #ifndef SEPARATE_LINE_CODE_LABEL | |
2622 | #define SEPARATE_LINE_CODE_LABEL "LSM" | |
2623 | #endif | |
3f76745e | 2624 | \f |
14a774a9 RK |
2625 | /* We allow a language front-end to designate a function that is to be |
2626 | called to "demangle" any name before it it put into a DIE. */ | |
2627 | ||
83d2b3b9 | 2628 | static const char *(*demangle_name_func) PARAMS ((const char *)); |
14a774a9 RK |
2629 | |
2630 | void | |
2631 | dwarf2out_set_demangle_name_func (func) | |
83d2b3b9 | 2632 | const char *(*func) PARAMS ((const char *)); |
14a774a9 RK |
2633 | { |
2634 | demangle_name_func = func; | |
2635 | } | |
2636 | \f | |
1865dbb5 JM |
2637 | /* Return an rtx like ORIG which lives forever. If we're doing GC, |
2638 | that means adding it to used_rtx_varray. If not, that means making | |
2639 | a copy on the permanent_obstack. */ | |
71dfc51f | 2640 | |
1865dbb5 JM |
2641 | static rtx |
2642 | save_rtx (orig) | |
2643 | register rtx orig; | |
a3f97cbb | 2644 | { |
1865dbb5 JM |
2645 | if (ggc_p) |
2646 | VARRAY_PUSH_RTX (used_rtx_varray, orig); | |
2647 | else | |
3f76745e | 2648 | { |
1865dbb5 JM |
2649 | push_obstacks_nochange (); |
2650 | end_temporary_allocation (); | |
2651 | orig = copy_rtx (orig); | |
2652 | pop_obstacks (); | |
3f76745e | 2653 | } |
b170964a | 2654 | |
1865dbb5 | 2655 | return orig; |
d291dd49 JM |
2656 | } |
2657 | ||
956d6950 | 2658 | /* Test if rtl node points to a pseudo register. */ |
71dfc51f | 2659 | |
3f76745e JM |
2660 | static inline int |
2661 | is_pseudo_reg (rtl) | |
2662 | register rtx rtl; | |
d291dd49 | 2663 | { |
3f76745e JM |
2664 | return (((GET_CODE (rtl) == REG) && (REGNO (rtl) >= FIRST_PSEUDO_REGISTER)) |
2665 | || ((GET_CODE (rtl) == SUBREG) | |
2666 | && (REGNO (XEXP (rtl, 0)) >= FIRST_PSEUDO_REGISTER))); | |
d291dd49 JM |
2667 | } |
2668 | ||
3f76745e JM |
2669 | /* Return a reference to a type, with its const and volatile qualifiers |
2670 | removed. */ | |
71dfc51f | 2671 | |
3f76745e JM |
2672 | static inline tree |
2673 | type_main_variant (type) | |
2674 | register tree type; | |
d291dd49 | 2675 | { |
3f76745e | 2676 | type = TYPE_MAIN_VARIANT (type); |
71dfc51f | 2677 | |
3f76745e JM |
2678 | /* There really should be only one main variant among any group of variants |
2679 | of a given type (and all of the MAIN_VARIANT values for all members of | |
2680 | the group should point to that one type) but sometimes the C front-end | |
2681 | messes this up for array types, so we work around that bug here. */ | |
71dfc51f | 2682 | |
3f76745e JM |
2683 | if (TREE_CODE (type) == ARRAY_TYPE) |
2684 | while (type != TYPE_MAIN_VARIANT (type)) | |
2685 | type = TYPE_MAIN_VARIANT (type); | |
2686 | ||
2687 | return type; | |
a3f97cbb JW |
2688 | } |
2689 | ||
3f76745e | 2690 | /* Return non-zero if the given type node represents a tagged type. */ |
71dfc51f RK |
2691 | |
2692 | static inline int | |
3f76745e JM |
2693 | is_tagged_type (type) |
2694 | register tree type; | |
bdb669cb | 2695 | { |
3f76745e | 2696 | register enum tree_code code = TREE_CODE (type); |
71dfc51f | 2697 | |
3f76745e JM |
2698 | return (code == RECORD_TYPE || code == UNION_TYPE |
2699 | || code == QUAL_UNION_TYPE || code == ENUMERAL_TYPE); | |
bdb669cb JM |
2700 | } |
2701 | ||
3f76745e | 2702 | /* Convert a DIE tag into its string name. */ |
71dfc51f | 2703 | |
d560ee52 | 2704 | static const char * |
3f76745e JM |
2705 | dwarf_tag_name (tag) |
2706 | register unsigned tag; | |
bdb669cb | 2707 | { |
3f76745e JM |
2708 | switch (tag) |
2709 | { | |
2710 | case DW_TAG_padding: | |
2711 | return "DW_TAG_padding"; | |
2712 | case DW_TAG_array_type: | |
2713 | return "DW_TAG_array_type"; | |
2714 | case DW_TAG_class_type: | |
2715 | return "DW_TAG_class_type"; | |
2716 | case DW_TAG_entry_point: | |
2717 | return "DW_TAG_entry_point"; | |
2718 | case DW_TAG_enumeration_type: | |
2719 | return "DW_TAG_enumeration_type"; | |
2720 | case DW_TAG_formal_parameter: | |
2721 | return "DW_TAG_formal_parameter"; | |
2722 | case DW_TAG_imported_declaration: | |
2723 | return "DW_TAG_imported_declaration"; | |
2724 | case DW_TAG_label: | |
2725 | return "DW_TAG_label"; | |
2726 | case DW_TAG_lexical_block: | |
2727 | return "DW_TAG_lexical_block"; | |
2728 | case DW_TAG_member: | |
2729 | return "DW_TAG_member"; | |
2730 | case DW_TAG_pointer_type: | |
2731 | return "DW_TAG_pointer_type"; | |
2732 | case DW_TAG_reference_type: | |
2733 | return "DW_TAG_reference_type"; | |
2734 | case DW_TAG_compile_unit: | |
2735 | return "DW_TAG_compile_unit"; | |
2736 | case DW_TAG_string_type: | |
2737 | return "DW_TAG_string_type"; | |
2738 | case DW_TAG_structure_type: | |
2739 | return "DW_TAG_structure_type"; | |
2740 | case DW_TAG_subroutine_type: | |
2741 | return "DW_TAG_subroutine_type"; | |
2742 | case DW_TAG_typedef: | |
2743 | return "DW_TAG_typedef"; | |
2744 | case DW_TAG_union_type: | |
2745 | return "DW_TAG_union_type"; | |
2746 | case DW_TAG_unspecified_parameters: | |
2747 | return "DW_TAG_unspecified_parameters"; | |
2748 | case DW_TAG_variant: | |
2749 | return "DW_TAG_variant"; | |
2750 | case DW_TAG_common_block: | |
2751 | return "DW_TAG_common_block"; | |
2752 | case DW_TAG_common_inclusion: | |
2753 | return "DW_TAG_common_inclusion"; | |
2754 | case DW_TAG_inheritance: | |
2755 | return "DW_TAG_inheritance"; | |
2756 | case DW_TAG_inlined_subroutine: | |
2757 | return "DW_TAG_inlined_subroutine"; | |
2758 | case DW_TAG_module: | |
2759 | return "DW_TAG_module"; | |
2760 | case DW_TAG_ptr_to_member_type: | |
2761 | return "DW_TAG_ptr_to_member_type"; | |
2762 | case DW_TAG_set_type: | |
2763 | return "DW_TAG_set_type"; | |
2764 | case DW_TAG_subrange_type: | |
2765 | return "DW_TAG_subrange_type"; | |
2766 | case DW_TAG_with_stmt: | |
2767 | return "DW_TAG_with_stmt"; | |
2768 | case DW_TAG_access_declaration: | |
2769 | return "DW_TAG_access_declaration"; | |
2770 | case DW_TAG_base_type: | |
2771 | return "DW_TAG_base_type"; | |
2772 | case DW_TAG_catch_block: | |
2773 | return "DW_TAG_catch_block"; | |
2774 | case DW_TAG_const_type: | |
2775 | return "DW_TAG_const_type"; | |
2776 | case DW_TAG_constant: | |
2777 | return "DW_TAG_constant"; | |
2778 | case DW_TAG_enumerator: | |
2779 | return "DW_TAG_enumerator"; | |
2780 | case DW_TAG_file_type: | |
2781 | return "DW_TAG_file_type"; | |
2782 | case DW_TAG_friend: | |
2783 | return "DW_TAG_friend"; | |
2784 | case DW_TAG_namelist: | |
2785 | return "DW_TAG_namelist"; | |
2786 | case DW_TAG_namelist_item: | |
2787 | return "DW_TAG_namelist_item"; | |
2788 | case DW_TAG_packed_type: | |
2789 | return "DW_TAG_packed_type"; | |
2790 | case DW_TAG_subprogram: | |
2791 | return "DW_TAG_subprogram"; | |
2792 | case DW_TAG_template_type_param: | |
2793 | return "DW_TAG_template_type_param"; | |
2794 | case DW_TAG_template_value_param: | |
2795 | return "DW_TAG_template_value_param"; | |
2796 | case DW_TAG_thrown_type: | |
2797 | return "DW_TAG_thrown_type"; | |
2798 | case DW_TAG_try_block: | |
2799 | return "DW_TAG_try_block"; | |
2800 | case DW_TAG_variant_part: | |
2801 | return "DW_TAG_variant_part"; | |
2802 | case DW_TAG_variable: | |
2803 | return "DW_TAG_variable"; | |
2804 | case DW_TAG_volatile_type: | |
2805 | return "DW_TAG_volatile_type"; | |
2806 | case DW_TAG_MIPS_loop: | |
2807 | return "DW_TAG_MIPS_loop"; | |
2808 | case DW_TAG_format_label: | |
2809 | return "DW_TAG_format_label"; | |
2810 | case DW_TAG_function_template: | |
2811 | return "DW_TAG_function_template"; | |
2812 | case DW_TAG_class_template: | |
2813 | return "DW_TAG_class_template"; | |
2814 | default: | |
2815 | return "DW_TAG_<unknown>"; | |
2816 | } | |
bdb669cb | 2817 | } |
a3f97cbb | 2818 | |
3f76745e | 2819 | /* Convert a DWARF attribute code into its string name. */ |
71dfc51f | 2820 | |
d560ee52 | 2821 | static const char * |
3f76745e JM |
2822 | dwarf_attr_name (attr) |
2823 | register unsigned attr; | |
4b674448 | 2824 | { |
3f76745e | 2825 | switch (attr) |
4b674448 | 2826 | { |
3f76745e JM |
2827 | case DW_AT_sibling: |
2828 | return "DW_AT_sibling"; | |
2829 | case DW_AT_location: | |
2830 | return "DW_AT_location"; | |
2831 | case DW_AT_name: | |
2832 | return "DW_AT_name"; | |
2833 | case DW_AT_ordering: | |
2834 | return "DW_AT_ordering"; | |
2835 | case DW_AT_subscr_data: | |
2836 | return "DW_AT_subscr_data"; | |
2837 | case DW_AT_byte_size: | |
2838 | return "DW_AT_byte_size"; | |
2839 | case DW_AT_bit_offset: | |
2840 | return "DW_AT_bit_offset"; | |
2841 | case DW_AT_bit_size: | |
2842 | return "DW_AT_bit_size"; | |
2843 | case DW_AT_element_list: | |
2844 | return "DW_AT_element_list"; | |
2845 | case DW_AT_stmt_list: | |
2846 | return "DW_AT_stmt_list"; | |
2847 | case DW_AT_low_pc: | |
2848 | return "DW_AT_low_pc"; | |
2849 | case DW_AT_high_pc: | |
2850 | return "DW_AT_high_pc"; | |
2851 | case DW_AT_language: | |
2852 | return "DW_AT_language"; | |
2853 | case DW_AT_member: | |
2854 | return "DW_AT_member"; | |
2855 | case DW_AT_discr: | |
2856 | return "DW_AT_discr"; | |
2857 | case DW_AT_discr_value: | |
2858 | return "DW_AT_discr_value"; | |
2859 | case DW_AT_visibility: | |
2860 | return "DW_AT_visibility"; | |
2861 | case DW_AT_import: | |
2862 | return "DW_AT_import"; | |
2863 | case DW_AT_string_length: | |
2864 | return "DW_AT_string_length"; | |
2865 | case DW_AT_common_reference: | |
2866 | return "DW_AT_common_reference"; | |
2867 | case DW_AT_comp_dir: | |
2868 | return "DW_AT_comp_dir"; | |
2869 | case DW_AT_const_value: | |
2870 | return "DW_AT_const_value"; | |
2871 | case DW_AT_containing_type: | |
2872 | return "DW_AT_containing_type"; | |
2873 | case DW_AT_default_value: | |
2874 | return "DW_AT_default_value"; | |
2875 | case DW_AT_inline: | |
2876 | return "DW_AT_inline"; | |
2877 | case DW_AT_is_optional: | |
2878 | return "DW_AT_is_optional"; | |
2879 | case DW_AT_lower_bound: | |
2880 | return "DW_AT_lower_bound"; | |
2881 | case DW_AT_producer: | |
2882 | return "DW_AT_producer"; | |
2883 | case DW_AT_prototyped: | |
2884 | return "DW_AT_prototyped"; | |
2885 | case DW_AT_return_addr: | |
2886 | return "DW_AT_return_addr"; | |
2887 | case DW_AT_start_scope: | |
2888 | return "DW_AT_start_scope"; | |
2889 | case DW_AT_stride_size: | |
2890 | return "DW_AT_stride_size"; | |
2891 | case DW_AT_upper_bound: | |
2892 | return "DW_AT_upper_bound"; | |
2893 | case DW_AT_abstract_origin: | |
2894 | return "DW_AT_abstract_origin"; | |
2895 | case DW_AT_accessibility: | |
2896 | return "DW_AT_accessibility"; | |
2897 | case DW_AT_address_class: | |
2898 | return "DW_AT_address_class"; | |
2899 | case DW_AT_artificial: | |
2900 | return "DW_AT_artificial"; | |
2901 | case DW_AT_base_types: | |
2902 | return "DW_AT_base_types"; | |
2903 | case DW_AT_calling_convention: | |
2904 | return "DW_AT_calling_convention"; | |
2905 | case DW_AT_count: | |
2906 | return "DW_AT_count"; | |
2907 | case DW_AT_data_member_location: | |
2908 | return "DW_AT_data_member_location"; | |
2909 | case DW_AT_decl_column: | |
2910 | return "DW_AT_decl_column"; | |
2911 | case DW_AT_decl_file: | |
2912 | return "DW_AT_decl_file"; | |
2913 | case DW_AT_decl_line: | |
2914 | return "DW_AT_decl_line"; | |
2915 | case DW_AT_declaration: | |
2916 | return "DW_AT_declaration"; | |
2917 | case DW_AT_discr_list: | |
2918 | return "DW_AT_discr_list"; | |
2919 | case DW_AT_encoding: | |
2920 | return "DW_AT_encoding"; | |
2921 | case DW_AT_external: | |
2922 | return "DW_AT_external"; | |
2923 | case DW_AT_frame_base: | |
2924 | return "DW_AT_frame_base"; | |
2925 | case DW_AT_friend: | |
2926 | return "DW_AT_friend"; | |
2927 | case DW_AT_identifier_case: | |
2928 | return "DW_AT_identifier_case"; | |
2929 | case DW_AT_macro_info: | |
2930 | return "DW_AT_macro_info"; | |
2931 | case DW_AT_namelist_items: | |
2932 | return "DW_AT_namelist_items"; | |
2933 | case DW_AT_priority: | |
2934 | return "DW_AT_priority"; | |
2935 | case DW_AT_segment: | |
2936 | return "DW_AT_segment"; | |
2937 | case DW_AT_specification: | |
2938 | return "DW_AT_specification"; | |
2939 | case DW_AT_static_link: | |
2940 | return "DW_AT_static_link"; | |
2941 | case DW_AT_type: | |
2942 | return "DW_AT_type"; | |
2943 | case DW_AT_use_location: | |
2944 | return "DW_AT_use_location"; | |
2945 | case DW_AT_variable_parameter: | |
2946 | return "DW_AT_variable_parameter"; | |
2947 | case DW_AT_virtuality: | |
2948 | return "DW_AT_virtuality"; | |
2949 | case DW_AT_vtable_elem_location: | |
2950 | return "DW_AT_vtable_elem_location"; | |
71dfc51f | 2951 | |
3f76745e JM |
2952 | case DW_AT_MIPS_fde: |
2953 | return "DW_AT_MIPS_fde"; | |
2954 | case DW_AT_MIPS_loop_begin: | |
2955 | return "DW_AT_MIPS_loop_begin"; | |
2956 | case DW_AT_MIPS_tail_loop_begin: | |
2957 | return "DW_AT_MIPS_tail_loop_begin"; | |
2958 | case DW_AT_MIPS_epilog_begin: | |
2959 | return "DW_AT_MIPS_epilog_begin"; | |
2960 | case DW_AT_MIPS_loop_unroll_factor: | |
2961 | return "DW_AT_MIPS_loop_unroll_factor"; | |
2962 | case DW_AT_MIPS_software_pipeline_depth: | |
2963 | return "DW_AT_MIPS_software_pipeline_depth"; | |
2964 | case DW_AT_MIPS_linkage_name: | |
2965 | return "DW_AT_MIPS_linkage_name"; | |
2966 | case DW_AT_MIPS_stride: | |
2967 | return "DW_AT_MIPS_stride"; | |
2968 | case DW_AT_MIPS_abstract_name: | |
2969 | return "DW_AT_MIPS_abstract_name"; | |
2970 | case DW_AT_MIPS_clone_origin: | |
2971 | return "DW_AT_MIPS_clone_origin"; | |
2972 | case DW_AT_MIPS_has_inlines: | |
2973 | return "DW_AT_MIPS_has_inlines"; | |
71dfc51f | 2974 | |
3f76745e JM |
2975 | case DW_AT_sf_names: |
2976 | return "DW_AT_sf_names"; | |
2977 | case DW_AT_src_info: | |
2978 | return "DW_AT_src_info"; | |
2979 | case DW_AT_mac_info: | |
2980 | return "DW_AT_mac_info"; | |
2981 | case DW_AT_src_coords: | |
2982 | return "DW_AT_src_coords"; | |
2983 | case DW_AT_body_begin: | |
2984 | return "DW_AT_body_begin"; | |
2985 | case DW_AT_body_end: | |
2986 | return "DW_AT_body_end"; | |
2987 | default: | |
2988 | return "DW_AT_<unknown>"; | |
4b674448 JM |
2989 | } |
2990 | } | |
2991 | ||
3f76745e | 2992 | /* Convert a DWARF value form code into its string name. */ |
71dfc51f | 2993 | |
d560ee52 | 2994 | static const char * |
3f76745e JM |
2995 | dwarf_form_name (form) |
2996 | register unsigned form; | |
4b674448 | 2997 | { |
3f76745e | 2998 | switch (form) |
4b674448 | 2999 | { |
3f76745e JM |
3000 | case DW_FORM_addr: |
3001 | return "DW_FORM_addr"; | |
3002 | case DW_FORM_block2: | |
3003 | return "DW_FORM_block2"; | |
3004 | case DW_FORM_block4: | |
3005 | return "DW_FORM_block4"; | |
3006 | case DW_FORM_data2: | |
3007 | return "DW_FORM_data2"; | |
3008 | case DW_FORM_data4: | |
3009 | return "DW_FORM_data4"; | |
3010 | case DW_FORM_data8: | |
3011 | return "DW_FORM_data8"; | |
3012 | case DW_FORM_string: | |
3013 | return "DW_FORM_string"; | |
3014 | case DW_FORM_block: | |
3015 | return "DW_FORM_block"; | |
3016 | case DW_FORM_block1: | |
3017 | return "DW_FORM_block1"; | |
3018 | case DW_FORM_data1: | |
3019 | return "DW_FORM_data1"; | |
3020 | case DW_FORM_flag: | |
3021 | return "DW_FORM_flag"; | |
3022 | case DW_FORM_sdata: | |
3023 | return "DW_FORM_sdata"; | |
3024 | case DW_FORM_strp: | |
3025 | return "DW_FORM_strp"; | |
3026 | case DW_FORM_udata: | |
3027 | return "DW_FORM_udata"; | |
3028 | case DW_FORM_ref_addr: | |
3029 | return "DW_FORM_ref_addr"; | |
3030 | case DW_FORM_ref1: | |
3031 | return "DW_FORM_ref1"; | |
3032 | case DW_FORM_ref2: | |
3033 | return "DW_FORM_ref2"; | |
3034 | case DW_FORM_ref4: | |
3035 | return "DW_FORM_ref4"; | |
3036 | case DW_FORM_ref8: | |
3037 | return "DW_FORM_ref8"; | |
3038 | case DW_FORM_ref_udata: | |
3039 | return "DW_FORM_ref_udata"; | |
3040 | case DW_FORM_indirect: | |
3041 | return "DW_FORM_indirect"; | |
3042 | default: | |
3043 | return "DW_FORM_<unknown>"; | |
4b674448 JM |
3044 | } |
3045 | } | |
3046 | ||
3f76745e | 3047 | /* Convert a DWARF stack opcode into its string name. */ |
71dfc51f | 3048 | |
d560ee52 | 3049 | static const char * |
3f76745e JM |
3050 | dwarf_stack_op_name (op) |
3051 | register unsigned op; | |
a3f97cbb | 3052 | { |
3f76745e | 3053 | switch (op) |
a3f97cbb | 3054 | { |
3f76745e JM |
3055 | case DW_OP_addr: |
3056 | return "DW_OP_addr"; | |
3057 | case DW_OP_deref: | |
3058 | return "DW_OP_deref"; | |
3059 | case DW_OP_const1u: | |
3060 | return "DW_OP_const1u"; | |
3061 | case DW_OP_const1s: | |
3062 | return "DW_OP_const1s"; | |
3063 | case DW_OP_const2u: | |
3064 | return "DW_OP_const2u"; | |
3065 | case DW_OP_const2s: | |
3066 | return "DW_OP_const2s"; | |
3067 | case DW_OP_const4u: | |
3068 | return "DW_OP_const4u"; | |
3069 | case DW_OP_const4s: | |
3070 | return "DW_OP_const4s"; | |
3071 | case DW_OP_const8u: | |
3072 | return "DW_OP_const8u"; | |
3073 | case DW_OP_const8s: | |
3074 | return "DW_OP_const8s"; | |
3075 | case DW_OP_constu: | |
3076 | return "DW_OP_constu"; | |
3077 | case DW_OP_consts: | |
3078 | return "DW_OP_consts"; | |
3079 | case DW_OP_dup: | |
3080 | return "DW_OP_dup"; | |
3081 | case DW_OP_drop: | |
3082 | return "DW_OP_drop"; | |
3083 | case DW_OP_over: | |
3084 | return "DW_OP_over"; | |
3085 | case DW_OP_pick: | |
3086 | return "DW_OP_pick"; | |
3087 | case DW_OP_swap: | |
3088 | return "DW_OP_swap"; | |
3089 | case DW_OP_rot: | |
3090 | return "DW_OP_rot"; | |
3091 | case DW_OP_xderef: | |
3092 | return "DW_OP_xderef"; | |
3093 | case DW_OP_abs: | |
3094 | return "DW_OP_abs"; | |
3095 | case DW_OP_and: | |
3096 | return "DW_OP_and"; | |
3097 | case DW_OP_div: | |
3098 | return "DW_OP_div"; | |
3099 | case DW_OP_minus: | |
3100 | return "DW_OP_minus"; | |
3101 | case DW_OP_mod: | |
3102 | return "DW_OP_mod"; | |
3103 | case DW_OP_mul: | |
3104 | return "DW_OP_mul"; | |
3105 | case DW_OP_neg: | |
3106 | return "DW_OP_neg"; | |
3107 | case DW_OP_not: | |
3108 | return "DW_OP_not"; | |
3109 | case DW_OP_or: | |
3110 | return "DW_OP_or"; | |
3111 | case DW_OP_plus: | |
3112 | return "DW_OP_plus"; | |
3113 | case DW_OP_plus_uconst: | |
3114 | return "DW_OP_plus_uconst"; | |
3115 | case DW_OP_shl: | |
3116 | return "DW_OP_shl"; | |
3117 | case DW_OP_shr: | |
3118 | return "DW_OP_shr"; | |
3119 | case DW_OP_shra: | |
3120 | return "DW_OP_shra"; | |
3121 | case DW_OP_xor: | |
3122 | return "DW_OP_xor"; | |
3123 | case DW_OP_bra: | |
3124 | return "DW_OP_bra"; | |
3125 | case DW_OP_eq: | |
3126 | return "DW_OP_eq"; | |
3127 | case DW_OP_ge: | |
3128 | return "DW_OP_ge"; | |
3129 | case DW_OP_gt: | |
3130 | return "DW_OP_gt"; | |
3131 | case DW_OP_le: | |
3132 | return "DW_OP_le"; | |
3133 | case DW_OP_lt: | |
3134 | return "DW_OP_lt"; | |
3135 | case DW_OP_ne: | |
3136 | return "DW_OP_ne"; | |
3137 | case DW_OP_skip: | |
3138 | return "DW_OP_skip"; | |
3139 | case DW_OP_lit0: | |
3140 | return "DW_OP_lit0"; | |
3141 | case DW_OP_lit1: | |
3142 | return "DW_OP_lit1"; | |
3143 | case DW_OP_lit2: | |
3144 | return "DW_OP_lit2"; | |
3145 | case DW_OP_lit3: | |
3146 | return "DW_OP_lit3"; | |
3147 | case DW_OP_lit4: | |
3148 | return "DW_OP_lit4"; | |
3149 | case DW_OP_lit5: | |
3150 | return "DW_OP_lit5"; | |
3151 | case DW_OP_lit6: | |
3152 | return "DW_OP_lit6"; | |
3153 | case DW_OP_lit7: | |
3154 | return "DW_OP_lit7"; | |
3155 | case DW_OP_lit8: | |
3156 | return "DW_OP_lit8"; | |
3157 | case DW_OP_lit9: | |
3158 | return "DW_OP_lit9"; | |
3159 | case DW_OP_lit10: | |
3160 | return "DW_OP_lit10"; | |
3161 | case DW_OP_lit11: | |
3162 | return "DW_OP_lit11"; | |
3163 | case DW_OP_lit12: | |
3164 | return "DW_OP_lit12"; | |
3165 | case DW_OP_lit13: | |
3166 | return "DW_OP_lit13"; | |
3167 | case DW_OP_lit14: | |
3168 | return "DW_OP_lit14"; | |
3169 | case DW_OP_lit15: | |
3170 | return "DW_OP_lit15"; | |
3171 | case DW_OP_lit16: | |
3172 | return "DW_OP_lit16"; | |
3173 | case DW_OP_lit17: | |
3174 | return "DW_OP_lit17"; | |
3175 | case DW_OP_lit18: | |
3176 | return "DW_OP_lit18"; | |
3177 | case DW_OP_lit19: | |
3178 | return "DW_OP_lit19"; | |
3179 | case DW_OP_lit20: | |
3180 | return "DW_OP_lit20"; | |
3181 | case DW_OP_lit21: | |
3182 | return "DW_OP_lit21"; | |
3183 | case DW_OP_lit22: | |
3184 | return "DW_OP_lit22"; | |
3185 | case DW_OP_lit23: | |
3186 | return "DW_OP_lit23"; | |
3187 | case DW_OP_lit24: | |
3188 | return "DW_OP_lit24"; | |
3189 | case DW_OP_lit25: | |
3190 | return "DW_OP_lit25"; | |
3191 | case DW_OP_lit26: | |
3192 | return "DW_OP_lit26"; | |
3193 | case DW_OP_lit27: | |
3194 | return "DW_OP_lit27"; | |
3195 | case DW_OP_lit28: | |
3196 | return "DW_OP_lit28"; | |
3197 | case DW_OP_lit29: | |
3198 | return "DW_OP_lit29"; | |
3199 | case DW_OP_lit30: | |
3200 | return "DW_OP_lit30"; | |
3201 | case DW_OP_lit31: | |
3202 | return "DW_OP_lit31"; | |
3203 | case DW_OP_reg0: | |
3204 | return "DW_OP_reg0"; | |
3205 | case DW_OP_reg1: | |
3206 | return "DW_OP_reg1"; | |
3207 | case DW_OP_reg2: | |
3208 | return "DW_OP_reg2"; | |
3209 | case DW_OP_reg3: | |
3210 | return "DW_OP_reg3"; | |
3211 | case DW_OP_reg4: | |
3212 | return "DW_OP_reg4"; | |
3213 | case DW_OP_reg5: | |
3214 | return "DW_OP_reg5"; | |
3215 | case DW_OP_reg6: | |
3216 | return "DW_OP_reg6"; | |
3217 | case DW_OP_reg7: | |
3218 | return "DW_OP_reg7"; | |
3219 | case DW_OP_reg8: | |
3220 | return "DW_OP_reg8"; | |
3221 | case DW_OP_reg9: | |
3222 | return "DW_OP_reg9"; | |
3223 | case DW_OP_reg10: | |
3224 | return "DW_OP_reg10"; | |
3225 | case DW_OP_reg11: | |
3226 | return "DW_OP_reg11"; | |
3227 | case DW_OP_reg12: | |
3228 | return "DW_OP_reg12"; | |
3229 | case DW_OP_reg13: | |
3230 | return "DW_OP_reg13"; | |
3231 | case DW_OP_reg14: | |
3232 | return "DW_OP_reg14"; | |
3233 | case DW_OP_reg15: | |
3234 | return "DW_OP_reg15"; | |
3235 | case DW_OP_reg16: | |
3236 | return "DW_OP_reg16"; | |
3237 | case DW_OP_reg17: | |
3238 | return "DW_OP_reg17"; | |
3239 | case DW_OP_reg18: | |
3240 | return "DW_OP_reg18"; | |
3241 | case DW_OP_reg19: | |
3242 | return "DW_OP_reg19"; | |
3243 | case DW_OP_reg20: | |
3244 | return "DW_OP_reg20"; | |
3245 | case DW_OP_reg21: | |
3246 | return "DW_OP_reg21"; | |
3247 | case DW_OP_reg22: | |
3248 | return "DW_OP_reg22"; | |
3249 | case DW_OP_reg23: | |
3250 | return "DW_OP_reg23"; | |
3251 | case DW_OP_reg24: | |
3252 | return "DW_OP_reg24"; | |
3253 | case DW_OP_reg25: | |
3254 | return "DW_OP_reg25"; | |
3255 | case DW_OP_reg26: | |
3256 | return "DW_OP_reg26"; | |
3257 | case DW_OP_reg27: | |
3258 | return "DW_OP_reg27"; | |
3259 | case DW_OP_reg28: | |
3260 | return "DW_OP_reg28"; | |
3261 | case DW_OP_reg29: | |
3262 | return "DW_OP_reg29"; | |
3263 | case DW_OP_reg30: | |
3264 | return "DW_OP_reg30"; | |
3265 | case DW_OP_reg31: | |
3266 | return "DW_OP_reg31"; | |
3267 | case DW_OP_breg0: | |
3268 | return "DW_OP_breg0"; | |
3269 | case DW_OP_breg1: | |
3270 | return "DW_OP_breg1"; | |
3271 | case DW_OP_breg2: | |
3272 | return "DW_OP_breg2"; | |
3273 | case DW_OP_breg3: | |
3274 | return "DW_OP_breg3"; | |
3275 | case DW_OP_breg4: | |
3276 | return "DW_OP_breg4"; | |
3277 | case DW_OP_breg5: | |
3278 | return "DW_OP_breg5"; | |
3279 | case DW_OP_breg6: | |
3280 | return "DW_OP_breg6"; | |
3281 | case DW_OP_breg7: | |
3282 | return "DW_OP_breg7"; | |
3283 | case DW_OP_breg8: | |
3284 | return "DW_OP_breg8"; | |
3285 | case DW_OP_breg9: | |
3286 | return "DW_OP_breg9"; | |
3287 | case DW_OP_breg10: | |
3288 | return "DW_OP_breg10"; | |
3289 | case DW_OP_breg11: | |
3290 | return "DW_OP_breg11"; | |
3291 | case DW_OP_breg12: | |
3292 | return "DW_OP_breg12"; | |
3293 | case DW_OP_breg13: | |
3294 | return "DW_OP_breg13"; | |
3295 | case DW_OP_breg14: | |
3296 | return "DW_OP_breg14"; | |
3297 | case DW_OP_breg15: | |
3298 | return "DW_OP_breg15"; | |
3299 | case DW_OP_breg16: | |
3300 | return "DW_OP_breg16"; | |
3301 | case DW_OP_breg17: | |
3302 | return "DW_OP_breg17"; | |
3303 | case DW_OP_breg18: | |
3304 | return "DW_OP_breg18"; | |
3305 | case DW_OP_breg19: | |
3306 | return "DW_OP_breg19"; | |
3307 | case DW_OP_breg20: | |
3308 | return "DW_OP_breg20"; | |
3309 | case DW_OP_breg21: | |
3310 | return "DW_OP_breg21"; | |
3311 | case DW_OP_breg22: | |
3312 | return "DW_OP_breg22"; | |
3313 | case DW_OP_breg23: | |
3314 | return "DW_OP_breg23"; | |
3315 | case DW_OP_breg24: | |
3316 | return "DW_OP_breg24"; | |
3317 | case DW_OP_breg25: | |
3318 | return "DW_OP_breg25"; | |
3319 | case DW_OP_breg26: | |
3320 | return "DW_OP_breg26"; | |
3321 | case DW_OP_breg27: | |
3322 | return "DW_OP_breg27"; | |
3323 | case DW_OP_breg28: | |
3324 | return "DW_OP_breg28"; | |
3325 | case DW_OP_breg29: | |
3326 | return "DW_OP_breg29"; | |
3327 | case DW_OP_breg30: | |
3328 | return "DW_OP_breg30"; | |
3329 | case DW_OP_breg31: | |
3330 | return "DW_OP_breg31"; | |
3331 | case DW_OP_regx: | |
3332 | return "DW_OP_regx"; | |
3333 | case DW_OP_fbreg: | |
3334 | return "DW_OP_fbreg"; | |
3335 | case DW_OP_bregx: | |
3336 | return "DW_OP_bregx"; | |
3337 | case DW_OP_piece: | |
3338 | return "DW_OP_piece"; | |
3339 | case DW_OP_deref_size: | |
3340 | return "DW_OP_deref_size"; | |
3341 | case DW_OP_xderef_size: | |
3342 | return "DW_OP_xderef_size"; | |
3343 | case DW_OP_nop: | |
3344 | return "DW_OP_nop"; | |
3345 | default: | |
3346 | return "OP_<unknown>"; | |
a3f97cbb JW |
3347 | } |
3348 | } | |
3349 | ||
3f76745e | 3350 | /* Convert a DWARF type code into its string name. */ |
71dfc51f | 3351 | |
487a6e06 | 3352 | #if 0 |
d560ee52 | 3353 | static const char * |
3f76745e JM |
3354 | dwarf_type_encoding_name (enc) |
3355 | register unsigned enc; | |
a3f97cbb | 3356 | { |
3f76745e | 3357 | switch (enc) |
a3f97cbb | 3358 | { |
3f76745e JM |
3359 | case DW_ATE_address: |
3360 | return "DW_ATE_address"; | |
3361 | case DW_ATE_boolean: | |
3362 | return "DW_ATE_boolean"; | |
3363 | case DW_ATE_complex_float: | |
3364 | return "DW_ATE_complex_float"; | |
3365 | case DW_ATE_float: | |
3366 | return "DW_ATE_float"; | |
3367 | case DW_ATE_signed: | |
3368 | return "DW_ATE_signed"; | |
3369 | case DW_ATE_signed_char: | |
3370 | return "DW_ATE_signed_char"; | |
3371 | case DW_ATE_unsigned: | |
3372 | return "DW_ATE_unsigned"; | |
3373 | case DW_ATE_unsigned_char: | |
3374 | return "DW_ATE_unsigned_char"; | |
3375 | default: | |
3376 | return "DW_ATE_<unknown>"; | |
3377 | } | |
a3f97cbb | 3378 | } |
487a6e06 | 3379 | #endif |
3f76745e JM |
3380 | \f |
3381 | /* Determine the "ultimate origin" of a decl. The decl may be an inlined | |
3382 | instance of an inlined instance of a decl which is local to an inline | |
3383 | function, so we have to trace all of the way back through the origin chain | |
3384 | to find out what sort of node actually served as the original seed for the | |
3385 | given block. */ | |
a3f97cbb | 3386 | |
3f76745e JM |
3387 | static tree |
3388 | decl_ultimate_origin (decl) | |
3389 | register tree decl; | |
a3f97cbb | 3390 | { |
10a11b75 JM |
3391 | /* output_inline_function sets DECL_ABSTRACT_ORIGIN for all the |
3392 | nodes in the function to point to themselves; ignore that if | |
3393 | we're trying to output the abstract instance of this function. */ | |
3394 | if (DECL_ABSTRACT (decl) && DECL_ABSTRACT_ORIGIN (decl) == decl) | |
3395 | return NULL_TREE; | |
3396 | ||
02e24c7a MM |
3397 | #ifdef ENABLE_CHECKING |
3398 | if (DECL_FROM_INLINE (DECL_ORIGIN (decl))) | |
3399 | /* Since the DECL_ABSTRACT_ORIGIN for a DECL is supposed to be the | |
3400 | most distant ancestor, this should never happen. */ | |
3401 | abort (); | |
3402 | #endif | |
3f76745e | 3403 | |
02e24c7a | 3404 | return DECL_ABSTRACT_ORIGIN (decl); |
a3f97cbb JW |
3405 | } |
3406 | ||
3f76745e JM |
3407 | /* Determine the "ultimate origin" of a block. The block may be an inlined |
3408 | instance of an inlined instance of a block which is local to an inline | |
3409 | function, so we have to trace all of the way back through the origin chain | |
3410 | to find out what sort of node actually served as the original seed for the | |
3411 | given block. */ | |
71dfc51f | 3412 | |
3f76745e JM |
3413 | static tree |
3414 | block_ultimate_origin (block) | |
3415 | register tree block; | |
a3f97cbb | 3416 | { |
3f76745e | 3417 | register tree immediate_origin = BLOCK_ABSTRACT_ORIGIN (block); |
71dfc51f | 3418 | |
10a11b75 JM |
3419 | /* output_inline_function sets BLOCK_ABSTRACT_ORIGIN for all the |
3420 | nodes in the function to point to themselves; ignore that if | |
3421 | we're trying to output the abstract instance of this function. */ | |
3422 | if (BLOCK_ABSTRACT (block) && immediate_origin == block) | |
3423 | return NULL_TREE; | |
3424 | ||
3f76745e JM |
3425 | if (immediate_origin == NULL_TREE) |
3426 | return NULL_TREE; | |
3427 | else | |
3428 | { | |
3429 | register tree ret_val; | |
3430 | register tree lookahead = immediate_origin; | |
71dfc51f | 3431 | |
3f76745e JM |
3432 | do |
3433 | { | |
3434 | ret_val = lookahead; | |
3435 | lookahead = (TREE_CODE (ret_val) == BLOCK) | |
3436 | ? BLOCK_ABSTRACT_ORIGIN (ret_val) | |
3437 | : NULL; | |
3438 | } | |
3439 | while (lookahead != NULL && lookahead != ret_val); | |
3440 | ||
3441 | return ret_val; | |
3442 | } | |
a3f97cbb JW |
3443 | } |
3444 | ||
3f76745e JM |
3445 | /* Get the class to which DECL belongs, if any. In g++, the DECL_CONTEXT |
3446 | of a virtual function may refer to a base class, so we check the 'this' | |
3447 | parameter. */ | |
71dfc51f | 3448 | |
3f76745e JM |
3449 | static tree |
3450 | decl_class_context (decl) | |
3451 | tree decl; | |
a3f97cbb | 3452 | { |
3f76745e | 3453 | tree context = NULL_TREE; |
71dfc51f | 3454 | |
3f76745e JM |
3455 | if (TREE_CODE (decl) != FUNCTION_DECL || ! DECL_VINDEX (decl)) |
3456 | context = DECL_CONTEXT (decl); | |
3457 | else | |
3458 | context = TYPE_MAIN_VARIANT | |
3459 | (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))))); | |
71dfc51f | 3460 | |
3f76745e JM |
3461 | if (context && TREE_CODE_CLASS (TREE_CODE (context)) != 't') |
3462 | context = NULL_TREE; | |
3463 | ||
3464 | return context; | |
a3f97cbb JW |
3465 | } |
3466 | \f | |
a96c67ec JM |
3467 | /* Add an attribute/value pair to a DIE. We build the lists up in reverse |
3468 | addition order, and correct that in add_sibling_attributes. */ | |
71dfc51f RK |
3469 | |
3470 | static inline void | |
3f76745e JM |
3471 | add_dwarf_attr (die, attr) |
3472 | register dw_die_ref die; | |
3473 | register dw_attr_ref attr; | |
a3f97cbb | 3474 | { |
3f76745e | 3475 | if (die != NULL && attr != NULL) |
a3f97cbb | 3476 | { |
a96c67ec JM |
3477 | attr->dw_attr_next = die->die_attr; |
3478 | die->die_attr = attr; | |
a3f97cbb JW |
3479 | } |
3480 | } | |
3481 | ||
c6991660 | 3482 | static inline dw_val_class AT_class PARAMS ((dw_attr_ref)); |
a96c67ec JM |
3483 | static inline dw_val_class |
3484 | AT_class (a) | |
3485 | dw_attr_ref a; | |
3486 | { | |
3487 | return a->dw_attr_val.val_class; | |
3488 | } | |
3489 | ||
3f76745e | 3490 | /* Add a flag value attribute to a DIE. */ |
71dfc51f | 3491 | |
3f76745e JM |
3492 | static inline void |
3493 | add_AT_flag (die, attr_kind, flag) | |
3494 | register dw_die_ref die; | |
3495 | register enum dwarf_attribute attr_kind; | |
3496 | register unsigned flag; | |
a3f97cbb | 3497 | { |
3f76745e | 3498 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3499 | |
3f76745e JM |
3500 | attr->dw_attr_next = NULL; |
3501 | attr->dw_attr = attr_kind; | |
3502 | attr->dw_attr_val.val_class = dw_val_class_flag; | |
3503 | attr->dw_attr_val.v.val_flag = flag; | |
3504 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3505 | } |
3506 | ||
c6991660 | 3507 | static inline unsigned AT_flag PARAMS ((dw_attr_ref)); |
a96c67ec JM |
3508 | static inline unsigned |
3509 | AT_flag (a) | |
3510 | register dw_attr_ref a; | |
3511 | { | |
3512 | if (a && AT_class (a) == dw_val_class_flag) | |
3513 | return a->dw_attr_val.v.val_flag; | |
3514 | ||
3515 | return 0; | |
3516 | } | |
3517 | ||
3f76745e | 3518 | /* Add a signed integer attribute value to a DIE. */ |
71dfc51f | 3519 | |
3f76745e JM |
3520 | static inline void |
3521 | add_AT_int (die, attr_kind, int_val) | |
3522 | register dw_die_ref die; | |
3523 | register enum dwarf_attribute attr_kind; | |
3524 | register long int int_val; | |
a3f97cbb | 3525 | { |
3f76745e JM |
3526 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3527 | ||
3528 | attr->dw_attr_next = NULL; | |
3529 | attr->dw_attr = attr_kind; | |
3530 | attr->dw_attr_val.val_class = dw_val_class_const; | |
3531 | attr->dw_attr_val.v.val_int = int_val; | |
3532 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3533 | } |
3534 | ||
c6991660 | 3535 | static inline long int AT_int PARAMS ((dw_attr_ref)); |
a96c67ec JM |
3536 | static inline long int |
3537 | AT_int (a) | |
3538 | register dw_attr_ref a; | |
3539 | { | |
3540 | if (a && AT_class (a) == dw_val_class_const) | |
3541 | return a->dw_attr_val.v.val_int; | |
3542 | ||
3543 | return 0; | |
3544 | } | |
3545 | ||
3f76745e | 3546 | /* Add an unsigned integer attribute value to a DIE. */ |
71dfc51f | 3547 | |
3f76745e JM |
3548 | static inline void |
3549 | add_AT_unsigned (die, attr_kind, unsigned_val) | |
3550 | register dw_die_ref die; | |
3551 | register enum dwarf_attribute attr_kind; | |
3552 | register unsigned long unsigned_val; | |
a3f97cbb | 3553 | { |
3f76745e JM |
3554 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3555 | ||
3556 | attr->dw_attr_next = NULL; | |
3557 | attr->dw_attr = attr_kind; | |
3558 | attr->dw_attr_val.val_class = dw_val_class_unsigned_const; | |
3559 | attr->dw_attr_val.v.val_unsigned = unsigned_val; | |
3560 | add_dwarf_attr (die, attr); | |
a3f97cbb | 3561 | } |
71dfc51f | 3562 | |
c6991660 | 3563 | static inline unsigned long AT_unsigned PARAMS ((dw_attr_ref)); |
a96c67ec JM |
3564 | static inline unsigned long |
3565 | AT_unsigned (a) | |
3566 | register dw_attr_ref a; | |
3567 | { | |
3568 | if (a && AT_class (a) == dw_val_class_unsigned_const) | |
3569 | return a->dw_attr_val.v.val_unsigned; | |
3570 | ||
3571 | return 0; | |
3572 | } | |
3573 | ||
3f76745e JM |
3574 | /* Add an unsigned double integer attribute value to a DIE. */ |
3575 | ||
3576 | static inline void | |
3577 | add_AT_long_long (die, attr_kind, val_hi, val_low) | |
a3f97cbb | 3578 | register dw_die_ref die; |
3f76745e JM |
3579 | register enum dwarf_attribute attr_kind; |
3580 | register unsigned long val_hi; | |
3581 | register unsigned long val_low; | |
a3f97cbb | 3582 | { |
3f76745e | 3583 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3584 | |
3f76745e JM |
3585 | attr->dw_attr_next = NULL; |
3586 | attr->dw_attr = attr_kind; | |
3587 | attr->dw_attr_val.val_class = dw_val_class_long_long; | |
3588 | attr->dw_attr_val.v.val_long_long.hi = val_hi; | |
3589 | attr->dw_attr_val.v.val_long_long.low = val_low; | |
3590 | add_dwarf_attr (die, attr); | |
3591 | } | |
71dfc51f | 3592 | |
3f76745e | 3593 | /* Add a floating point attribute value to a DIE and return it. */ |
71dfc51f | 3594 | |
3f76745e JM |
3595 | static inline void |
3596 | add_AT_float (die, attr_kind, length, array) | |
3597 | register dw_die_ref die; | |
3598 | register enum dwarf_attribute attr_kind; | |
3599 | register unsigned length; | |
3600 | register long *array; | |
3601 | { | |
3602 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
3603 | ||
3604 | attr->dw_attr_next = NULL; | |
3605 | attr->dw_attr = attr_kind; | |
3606 | attr->dw_attr_val.val_class = dw_val_class_float; | |
3607 | attr->dw_attr_val.v.val_float.length = length; | |
3608 | attr->dw_attr_val.v.val_float.array = array; | |
3609 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3610 | } |
3611 | ||
3f76745e | 3612 | /* Add a string attribute value to a DIE. */ |
71dfc51f | 3613 | |
3f76745e JM |
3614 | static inline void |
3615 | add_AT_string (die, attr_kind, str) | |
a3f97cbb | 3616 | register dw_die_ref die; |
3f76745e | 3617 | register enum dwarf_attribute attr_kind; |
d560ee52 | 3618 | register const char *str; |
a3f97cbb | 3619 | { |
3f76745e | 3620 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3621 | |
3f76745e JM |
3622 | attr->dw_attr_next = NULL; |
3623 | attr->dw_attr = attr_kind; | |
3624 | attr->dw_attr_val.val_class = dw_val_class_str; | |
3625 | attr->dw_attr_val.v.val_str = xstrdup (str); | |
3626 | add_dwarf_attr (die, attr); | |
3627 | } | |
71dfc51f | 3628 | |
c6991660 | 3629 | static inline const char *AT_string PARAMS ((dw_attr_ref)); |
a96c67ec JM |
3630 | static inline const char * |
3631 | AT_string (a) | |
3632 | register dw_attr_ref a; | |
3633 | { | |
3634 | if (a && AT_class (a) == dw_val_class_str) | |
3635 | return a->dw_attr_val.v.val_str; | |
3636 | ||
3637 | return NULL; | |
3638 | } | |
3639 | ||
3f76745e | 3640 | /* Add a DIE reference attribute value to a DIE. */ |
71dfc51f | 3641 | |
3f76745e JM |
3642 | static inline void |
3643 | add_AT_die_ref (die, attr_kind, targ_die) | |
3644 | register dw_die_ref die; | |
3645 | register enum dwarf_attribute attr_kind; | |
3646 | register dw_die_ref targ_die; | |
3647 | { | |
3648 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3649 | |
3f76745e JM |
3650 | attr->dw_attr_next = NULL; |
3651 | attr->dw_attr = attr_kind; | |
3652 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
3653 | attr->dw_attr_val.v.val_die_ref = targ_die; | |
3654 | add_dwarf_attr (die, attr); | |
3655 | } | |
b1ccbc24 | 3656 | |
c6991660 | 3657 | static inline dw_die_ref AT_ref PARAMS ((dw_attr_ref)); |
a96c67ec JM |
3658 | static inline dw_die_ref |
3659 | AT_ref (a) | |
3660 | register dw_attr_ref a; | |
3661 | { | |
3662 | if (a && AT_class (a) == dw_val_class_die_ref) | |
3663 | return a->dw_attr_val.v.val_die_ref; | |
3664 | ||
3665 | return NULL; | |
3666 | } | |
3667 | ||
3f76745e | 3668 | /* Add an FDE reference attribute value to a DIE. */ |
b1ccbc24 | 3669 | |
3f76745e JM |
3670 | static inline void |
3671 | add_AT_fde_ref (die, attr_kind, targ_fde) | |
3672 | register dw_die_ref die; | |
3673 | register enum dwarf_attribute attr_kind; | |
3674 | register unsigned targ_fde; | |
3675 | { | |
3676 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
b1ccbc24 | 3677 | |
3f76745e JM |
3678 | attr->dw_attr_next = NULL; |
3679 | attr->dw_attr = attr_kind; | |
3680 | attr->dw_attr_val.val_class = dw_val_class_fde_ref; | |
3681 | attr->dw_attr_val.v.val_fde_index = targ_fde; | |
3682 | add_dwarf_attr (die, attr); | |
a3f97cbb | 3683 | } |
71dfc51f | 3684 | |
3f76745e | 3685 | /* Add a location description attribute value to a DIE. */ |
71dfc51f | 3686 | |
3f76745e JM |
3687 | static inline void |
3688 | add_AT_loc (die, attr_kind, loc) | |
3689 | register dw_die_ref die; | |
3690 | register enum dwarf_attribute attr_kind; | |
3691 | register dw_loc_descr_ref loc; | |
3692 | { | |
3693 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3694 | |
3f76745e JM |
3695 | attr->dw_attr_next = NULL; |
3696 | attr->dw_attr = attr_kind; | |
3697 | attr->dw_attr_val.val_class = dw_val_class_loc; | |
3698 | attr->dw_attr_val.v.val_loc = loc; | |
3699 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3700 | } |
3701 | ||
c6991660 | 3702 | static inline dw_loc_descr_ref AT_loc PARAMS ((dw_attr_ref)); |
a96c67ec JM |
3703 | static inline dw_loc_descr_ref |
3704 | AT_loc (a) | |
3705 | register dw_attr_ref a; | |
3706 | { | |
3707 | if (a && AT_class (a) == dw_val_class_loc) | |
3708 | return a->dw_attr_val.v.val_loc; | |
3709 | ||
3710 | return NULL; | |
3711 | } | |
3712 | ||
3f76745e | 3713 | /* Add an address constant attribute value to a DIE. */ |
71dfc51f | 3714 | |
3f76745e JM |
3715 | static inline void |
3716 | add_AT_addr (die, attr_kind, addr) | |
3717 | register dw_die_ref die; | |
3718 | register enum dwarf_attribute attr_kind; | |
1865dbb5 | 3719 | rtx addr; |
a3f97cbb | 3720 | { |
3f76745e | 3721 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3722 | |
3f76745e JM |
3723 | attr->dw_attr_next = NULL; |
3724 | attr->dw_attr = attr_kind; | |
3725 | attr->dw_attr_val.val_class = dw_val_class_addr; | |
3726 | attr->dw_attr_val.v.val_addr = addr; | |
3727 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3728 | } |
3729 | ||
c6991660 | 3730 | static inline rtx AT_addr PARAMS ((dw_attr_ref)); |
1865dbb5 | 3731 | static inline rtx |
a96c67ec JM |
3732 | AT_addr (a) |
3733 | register dw_attr_ref a; | |
3734 | { | |
3735 | if (a && AT_class (a) == dw_val_class_addr) | |
3736 | return a->dw_attr_val.v.val_addr; | |
3737 | ||
3738 | return NULL; | |
3739 | } | |
3740 | ||
3f76745e | 3741 | /* Add a label identifier attribute value to a DIE. */ |
71dfc51f | 3742 | |
3f76745e JM |
3743 | static inline void |
3744 | add_AT_lbl_id (die, attr_kind, lbl_id) | |
3745 | register dw_die_ref die; | |
3746 | register enum dwarf_attribute attr_kind; | |
3747 | register char *lbl_id; | |
a3f97cbb | 3748 | { |
3f76745e | 3749 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3750 | |
3f76745e JM |
3751 | attr->dw_attr_next = NULL; |
3752 | attr->dw_attr = attr_kind; | |
3753 | attr->dw_attr_val.val_class = dw_val_class_lbl_id; | |
3754 | attr->dw_attr_val.v.val_lbl_id = xstrdup (lbl_id); | |
3755 | add_dwarf_attr (die, attr); | |
3756 | } | |
71dfc51f | 3757 | |
3f76745e JM |
3758 | /* Add a section offset attribute value to a DIE. */ |
3759 | ||
3760 | static inline void | |
8b790721 | 3761 | add_AT_lbl_offset (die, attr_kind, label) |
3f76745e JM |
3762 | register dw_die_ref die; |
3763 | register enum dwarf_attribute attr_kind; | |
8b790721 | 3764 | register char *label; |
3f76745e JM |
3765 | { |
3766 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3767 | |
3f76745e JM |
3768 | attr->dw_attr_next = NULL; |
3769 | attr->dw_attr = attr_kind; | |
8b790721 | 3770 | attr->dw_attr_val.val_class = dw_val_class_lbl_offset; |
a96c67ec | 3771 | attr->dw_attr_val.v.val_lbl_id = xstrdup (label); |
3f76745e JM |
3772 | add_dwarf_attr (die, attr); |
3773 | ||
a3f97cbb JW |
3774 | } |
3775 | ||
c6991660 | 3776 | static inline const char *AT_lbl PARAMS ((dw_attr_ref)); |
a96c67ec JM |
3777 | static inline const char * |
3778 | AT_lbl (a) | |
3779 | register dw_attr_ref a; | |
a3f97cbb | 3780 | { |
a96c67ec JM |
3781 | if (a && (AT_class (a) == dw_val_class_lbl_id |
3782 | || AT_class (a) == dw_val_class_lbl_offset)) | |
3783 | return a->dw_attr_val.v.val_lbl_id; | |
71dfc51f | 3784 | |
a96c67ec | 3785 | return NULL; |
a3f97cbb JW |
3786 | } |
3787 | ||
3f76745e | 3788 | /* Get the attribute of type attr_kind. */ |
71dfc51f | 3789 | |
3f76745e JM |
3790 | static inline dw_attr_ref |
3791 | get_AT (die, attr_kind) | |
3792 | register dw_die_ref die; | |
3793 | register enum dwarf_attribute attr_kind; | |
f37230f0 | 3794 | { |
3f76745e JM |
3795 | register dw_attr_ref a; |
3796 | register dw_die_ref spec = NULL; | |
3797 | ||
3798 | if (die != NULL) | |
3799 | { | |
3800 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
3801 | { | |
3802 | if (a->dw_attr == attr_kind) | |
3803 | return a; | |
71dfc51f | 3804 | |
3f76745e JM |
3805 | if (a->dw_attr == DW_AT_specification |
3806 | || a->dw_attr == DW_AT_abstract_origin) | |
a96c67ec | 3807 | spec = AT_ref (a); |
3f76745e | 3808 | } |
71dfc51f | 3809 | |
3f76745e JM |
3810 | if (spec) |
3811 | return get_AT (spec, attr_kind); | |
3812 | } | |
3813 | ||
3814 | return NULL; | |
f37230f0 JM |
3815 | } |
3816 | ||
3f76745e JM |
3817 | /* Return the "low pc" attribute value, typically associated with |
3818 | a subprogram DIE. Return null if the "low pc" attribute is | |
3819 | either not prsent, or if it cannot be represented as an | |
3820 | assembler label identifier. */ | |
71dfc51f | 3821 | |
a96c67ec | 3822 | static inline const char * |
3f76745e JM |
3823 | get_AT_low_pc (die) |
3824 | register dw_die_ref die; | |
7e23cb16 | 3825 | { |
3f76745e | 3826 | register dw_attr_ref a = get_AT (die, DW_AT_low_pc); |
a96c67ec | 3827 | return AT_lbl (a); |
7e23cb16 JM |
3828 | } |
3829 | ||
3f76745e JM |
3830 | /* Return the "high pc" attribute value, typically associated with |
3831 | a subprogram DIE. Return null if the "high pc" attribute is | |
3832 | either not prsent, or if it cannot be represented as an | |
3833 | assembler label identifier. */ | |
71dfc51f | 3834 | |
a96c67ec | 3835 | static inline const char * |
3f76745e | 3836 | get_AT_hi_pc (die) |
a3f97cbb JW |
3837 | register dw_die_ref die; |
3838 | { | |
3f76745e | 3839 | register dw_attr_ref a = get_AT (die, DW_AT_high_pc); |
a96c67ec | 3840 | return AT_lbl (a); |
3f76745e JM |
3841 | } |
3842 | ||
3843 | /* Return the value of the string attribute designated by ATTR_KIND, or | |
3844 | NULL if it is not present. */ | |
71dfc51f | 3845 | |
a96c67ec | 3846 | static inline const char * |
3f76745e JM |
3847 | get_AT_string (die, attr_kind) |
3848 | register dw_die_ref die; | |
3849 | register enum dwarf_attribute attr_kind; | |
3850 | { | |
3851 | register dw_attr_ref a = get_AT (die, attr_kind); | |
a96c67ec | 3852 | return AT_string (a); |
a3f97cbb JW |
3853 | } |
3854 | ||
3f76745e JM |
3855 | /* Return the value of the flag attribute designated by ATTR_KIND, or -1 |
3856 | if it is not present. */ | |
71dfc51f | 3857 | |
3f76745e JM |
3858 | static inline int |
3859 | get_AT_flag (die, attr_kind) | |
3860 | register dw_die_ref die; | |
3861 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 3862 | { |
3f76745e | 3863 | register dw_attr_ref a = get_AT (die, attr_kind); |
a96c67ec | 3864 | return AT_flag (a); |
a3f97cbb JW |
3865 | } |
3866 | ||
3f76745e JM |
3867 | /* Return the value of the unsigned attribute designated by ATTR_KIND, or 0 |
3868 | if it is not present. */ | |
71dfc51f | 3869 | |
3f76745e JM |
3870 | static inline unsigned |
3871 | get_AT_unsigned (die, attr_kind) | |
3872 | register dw_die_ref die; | |
3873 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 3874 | { |
3f76745e | 3875 | register dw_attr_ref a = get_AT (die, attr_kind); |
a96c67ec JM |
3876 | return AT_unsigned (a); |
3877 | } | |
71dfc51f | 3878 | |
c6991660 | 3879 | static inline dw_die_ref get_AT_ref PARAMS ((dw_die_ref, enum dwarf_attribute)); |
a96c67ec JM |
3880 | static inline dw_die_ref |
3881 | get_AT_ref (die, attr_kind) | |
3882 | dw_die_ref die; | |
3883 | register enum dwarf_attribute attr_kind; | |
3884 | { | |
3885 | register dw_attr_ref a = get_AT (die, attr_kind); | |
3886 | return AT_ref (a); | |
3f76745e | 3887 | } |
71dfc51f | 3888 | |
3f76745e JM |
3889 | static inline int |
3890 | is_c_family () | |
3891 | { | |
3892 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 3893 | |
3f76745e JM |
3894 | return (lang == DW_LANG_C || lang == DW_LANG_C89 |
3895 | || lang == DW_LANG_C_plus_plus); | |
3896 | } | |
71dfc51f | 3897 | |
3f76745e JM |
3898 | static inline int |
3899 | is_fortran () | |
3900 | { | |
3901 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 3902 | |
3f76745e JM |
3903 | return (lang == DW_LANG_Fortran77 || lang == DW_LANG_Fortran90); |
3904 | } | |
71dfc51f | 3905 | |
10a11b75 | 3906 | /* Free up the memory used by A. */ |
71dfc51f | 3907 | |
c6991660 | 3908 | static inline void free_AT PARAMS ((dw_attr_ref)); |
3f76745e | 3909 | static inline void |
10a11b75 JM |
3910 | free_AT (a) |
3911 | dw_attr_ref a; | |
3912 | { | |
3913 | switch (AT_class (a)) | |
3914 | { | |
10a11b75 JM |
3915 | case dw_val_class_str: |
3916 | case dw_val_class_lbl_id: | |
3917 | case dw_val_class_lbl_offset: | |
3918 | free (a->dw_attr_val.v.val_str); | |
3919 | break; | |
3920 | ||
3921 | default: | |
3922 | break; | |
3923 | } | |
3924 | ||
3925 | free (a); | |
3926 | } | |
3927 | ||
3928 | /* Remove the specified attribute if present. */ | |
3929 | ||
3930 | static void | |
3f76745e JM |
3931 | remove_AT (die, attr_kind) |
3932 | register dw_die_ref die; | |
3933 | register enum dwarf_attribute attr_kind; | |
3934 | { | |
a96c67ec | 3935 | register dw_attr_ref *p; |
6d649d26 | 3936 | register dw_attr_ref removed = NULL; |
a3f97cbb | 3937 | |
3f76745e JM |
3938 | if (die != NULL) |
3939 | { | |
a96c67ec JM |
3940 | for (p = &(die->die_attr); *p; p = &((*p)->dw_attr_next)) |
3941 | if ((*p)->dw_attr == attr_kind) | |
3942 | { | |
3943 | removed = *p; | |
3944 | *p = (*p)->dw_attr_next; | |
3945 | break; | |
3946 | } | |
71dfc51f | 3947 | |
a96c67ec | 3948 | if (removed != 0) |
10a11b75 JM |
3949 | free_AT (removed); |
3950 | } | |
3951 | } | |
71dfc51f | 3952 | |
10a11b75 | 3953 | /* Free up the memory used by DIE. */ |
71dfc51f | 3954 | |
c6991660 | 3955 | static inline void free_die PARAMS ((dw_die_ref)); |
10a11b75 JM |
3956 | static inline void |
3957 | free_die (die) | |
3958 | dw_die_ref die; | |
3959 | { | |
3960 | remove_children (die); | |
3961 | free (die); | |
3f76745e | 3962 | } |
71dfc51f | 3963 | |
3f76745e | 3964 | /* Discard the children of this DIE. */ |
71dfc51f | 3965 | |
10a11b75 | 3966 | static void |
3f76745e JM |
3967 | remove_children (die) |
3968 | register dw_die_ref die; | |
3969 | { | |
3970 | register dw_die_ref child_die = die->die_child; | |
3971 | ||
3972 | die->die_child = NULL; | |
3f76745e JM |
3973 | |
3974 | while (child_die != NULL) | |
a3f97cbb | 3975 | { |
3f76745e JM |
3976 | register dw_die_ref tmp_die = child_die; |
3977 | register dw_attr_ref a; | |
71dfc51f | 3978 | |
3f76745e JM |
3979 | child_die = child_die->die_sib; |
3980 | ||
3981 | for (a = tmp_die->die_attr; a != NULL; ) | |
a3f97cbb | 3982 | { |
3f76745e | 3983 | register dw_attr_ref tmp_a = a; |
71dfc51f | 3984 | |
3f76745e | 3985 | a = a->dw_attr_next; |
10a11b75 | 3986 | free_AT (tmp_a); |
a3f97cbb | 3987 | } |
71dfc51f | 3988 | |
10a11b75 | 3989 | free_die (tmp_die); |
3f76745e JM |
3990 | } |
3991 | } | |
71dfc51f | 3992 | |
a96c67ec JM |
3993 | /* Add a child DIE below its parent. We build the lists up in reverse |
3994 | addition order, and correct that in add_sibling_attributes. */ | |
71dfc51f | 3995 | |
3f76745e JM |
3996 | static inline void |
3997 | add_child_die (die, child_die) | |
3998 | register dw_die_ref die; | |
3999 | register dw_die_ref child_die; | |
4000 | { | |
4001 | if (die != NULL && child_die != NULL) | |
e90b62db | 4002 | { |
3a88cbd1 JL |
4003 | if (die == child_die) |
4004 | abort (); | |
3f76745e | 4005 | child_die->die_parent = die; |
a96c67ec JM |
4006 | child_die->die_sib = die->die_child; |
4007 | die->die_child = child_die; | |
3f76745e JM |
4008 | } |
4009 | } | |
4010 | ||
2081603c JM |
4011 | /* Move CHILD, which must be a child of PARENT or the DIE for which PARENT |
4012 | is the specification, to the front of PARENT's list of children. */ | |
10a11b75 JM |
4013 | |
4014 | static void | |
4015 | splice_child_die (parent, child) | |
4016 | dw_die_ref parent, child; | |
4017 | { | |
4018 | dw_die_ref *p; | |
4019 | ||
4020 | /* We want the declaration DIE from inside the class, not the | |
4021 | specification DIE at toplevel. */ | |
4022 | if (child->die_parent != parent) | |
2081603c JM |
4023 | { |
4024 | dw_die_ref tmp = get_AT_ref (child, DW_AT_specification); | |
4025 | if (tmp) | |
4026 | child = tmp; | |
4027 | } | |
10a11b75 | 4028 | |
2081603c JM |
4029 | if (child->die_parent != parent |
4030 | && child->die_parent != get_AT_ref (parent, DW_AT_specification)) | |
10a11b75 JM |
4031 | abort (); |
4032 | ||
4033 | for (p = &(parent->die_child); *p; p = &((*p)->die_sib)) | |
4034 | if (*p == child) | |
4035 | { | |
4036 | *p = child->die_sib; | |
4037 | break; | |
4038 | } | |
4039 | ||
4040 | child->die_sib = parent->die_child; | |
4041 | parent->die_child = child; | |
4042 | } | |
4043 | ||
3f76745e JM |
4044 | /* Return a pointer to a newly created DIE node. */ |
4045 | ||
4046 | static inline dw_die_ref | |
4047 | new_die (tag_value, parent_die) | |
4048 | register enum dwarf_tag tag_value; | |
4049 | register dw_die_ref parent_die; | |
4050 | { | |
4051 | register dw_die_ref die = (dw_die_ref) xmalloc (sizeof (die_node)); | |
4052 | ||
4053 | die->die_tag = tag_value; | |
4054 | die->die_abbrev = 0; | |
4055 | die->die_offset = 0; | |
4056 | die->die_child = NULL; | |
4057 | die->die_parent = NULL; | |
4058 | die->die_sib = NULL; | |
3f76745e | 4059 | die->die_attr = NULL; |
3f76745e JM |
4060 | |
4061 | if (parent_die != NULL) | |
4062 | add_child_die (parent_die, die); | |
4063 | else | |
ef76d03b JW |
4064 | { |
4065 | limbo_die_node *limbo_node; | |
4066 | ||
4067 | limbo_node = (limbo_die_node *) xmalloc (sizeof (limbo_die_node)); | |
4068 | limbo_node->die = die; | |
4069 | limbo_node->next = limbo_die_list; | |
4070 | limbo_die_list = limbo_node; | |
4071 | } | |
71dfc51f | 4072 | |
3f76745e JM |
4073 | return die; |
4074 | } | |
71dfc51f | 4075 | |
3f76745e | 4076 | /* Return the DIE associated with the given type specifier. */ |
71dfc51f | 4077 | |
3f76745e JM |
4078 | static inline dw_die_ref |
4079 | lookup_type_die (type) | |
4080 | register tree type; | |
4081 | { | |
4082 | return (dw_die_ref) TYPE_SYMTAB_POINTER (type); | |
4083 | } | |
e90b62db | 4084 | |
3f76745e | 4085 | /* Equate a DIE to a given type specifier. */ |
71dfc51f | 4086 | |
10a11b75 | 4087 | static inline void |
3f76745e JM |
4088 | equate_type_number_to_die (type, type_die) |
4089 | register tree type; | |
4090 | register dw_die_ref type_die; | |
4091 | { | |
4092 | TYPE_SYMTAB_POINTER (type) = (char *) type_die; | |
4093 | } | |
71dfc51f | 4094 | |
3f76745e | 4095 | /* Return the DIE associated with a given declaration. */ |
71dfc51f | 4096 | |
3f76745e JM |
4097 | static inline dw_die_ref |
4098 | lookup_decl_die (decl) | |
4099 | register tree decl; | |
4100 | { | |
4101 | register unsigned decl_id = DECL_UID (decl); | |
4102 | ||
4103 | return (decl_id < decl_die_table_in_use | |
4104 | ? decl_die_table[decl_id] : NULL); | |
a3f97cbb JW |
4105 | } |
4106 | ||
3f76745e | 4107 | /* Equate a DIE to a particular declaration. */ |
71dfc51f | 4108 | |
3f76745e JM |
4109 | static void |
4110 | equate_decl_number_to_die (decl, decl_die) | |
4111 | register tree decl; | |
4112 | register dw_die_ref decl_die; | |
a3f97cbb | 4113 | { |
3f76745e | 4114 | register unsigned decl_id = DECL_UID (decl); |
3f76745e | 4115 | register unsigned num_allocated; |
d291dd49 | 4116 | |
3f76745e | 4117 | if (decl_id >= decl_die_table_allocated) |
a3f97cbb | 4118 | { |
3f76745e JM |
4119 | num_allocated |
4120 | = ((decl_id + 1 + DECL_DIE_TABLE_INCREMENT - 1) | |
4121 | / DECL_DIE_TABLE_INCREMENT) | |
4122 | * DECL_DIE_TABLE_INCREMENT; | |
4123 | ||
4124 | decl_die_table | |
4125 | = (dw_die_ref *) xrealloc (decl_die_table, | |
4126 | sizeof (dw_die_ref) * num_allocated); | |
4127 | ||
4128 | bzero ((char *) &decl_die_table[decl_die_table_allocated], | |
4129 | (num_allocated - decl_die_table_allocated) * sizeof (dw_die_ref)); | |
4130 | decl_die_table_allocated = num_allocated; | |
a3f97cbb | 4131 | } |
71dfc51f | 4132 | |
3f76745e JM |
4133 | if (decl_id >= decl_die_table_in_use) |
4134 | decl_die_table_in_use = (decl_id + 1); | |
4135 | ||
4136 | decl_die_table[decl_id] = decl_die; | |
a3f97cbb JW |
4137 | } |
4138 | ||
3f76745e JM |
4139 | /* Return a pointer to a newly allocated location description. Location |
4140 | descriptions are simple expression terms that can be strung | |
4141 | together to form more complicated location (address) descriptions. */ | |
71dfc51f | 4142 | |
3f76745e JM |
4143 | static inline dw_loc_descr_ref |
4144 | new_loc_descr (op, oprnd1, oprnd2) | |
4145 | register enum dwarf_location_atom op; | |
4146 | register unsigned long oprnd1; | |
4147 | register unsigned long oprnd2; | |
a3f97cbb | 4148 | { |
3f76745e JM |
4149 | register dw_loc_descr_ref descr |
4150 | = (dw_loc_descr_ref) xmalloc (sizeof (dw_loc_descr_node)); | |
71dfc51f | 4151 | |
3f76745e JM |
4152 | descr->dw_loc_next = NULL; |
4153 | descr->dw_loc_opc = op; | |
4154 | descr->dw_loc_oprnd1.val_class = dw_val_class_unsigned_const; | |
4155 | descr->dw_loc_oprnd1.v.val_unsigned = oprnd1; | |
4156 | descr->dw_loc_oprnd2.val_class = dw_val_class_unsigned_const; | |
4157 | descr->dw_loc_oprnd2.v.val_unsigned = oprnd2; | |
71dfc51f | 4158 | |
3f76745e | 4159 | return descr; |
a3f97cbb | 4160 | } |
71dfc51f | 4161 | |
3f76745e JM |
4162 | /* Add a location description term to a location description expression. */ |
4163 | ||
4164 | static inline void | |
4165 | add_loc_descr (list_head, descr) | |
4166 | register dw_loc_descr_ref *list_head; | |
4167 | register dw_loc_descr_ref descr; | |
a3f97cbb | 4168 | { |
3f76745e | 4169 | register dw_loc_descr_ref *d; |
71dfc51f | 4170 | |
3f76745e JM |
4171 | /* Find the end of the chain. */ |
4172 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) | |
4173 | ; | |
71dfc51f | 4174 | |
3f76745e JM |
4175 | *d = descr; |
4176 | } | |
4177 | \f | |
4178 | /* Keep track of the number of spaces used to indent the | |
4179 | output of the debugging routines that print the structure of | |
4180 | the DIE internal representation. */ | |
4181 | static int print_indent; | |
71dfc51f | 4182 | |
3f76745e JM |
4183 | /* Indent the line the number of spaces given by print_indent. */ |
4184 | ||
4185 | static inline void | |
4186 | print_spaces (outfile) | |
4187 | FILE *outfile; | |
4188 | { | |
4189 | fprintf (outfile, "%*s", print_indent, ""); | |
a3f97cbb JW |
4190 | } |
4191 | ||
956d6950 | 4192 | /* Print the information associated with a given DIE, and its children. |
3f76745e | 4193 | This routine is a debugging aid only. */ |
71dfc51f | 4194 | |
a3f97cbb | 4195 | static void |
3f76745e JM |
4196 | print_die (die, outfile) |
4197 | dw_die_ref die; | |
4198 | FILE *outfile; | |
a3f97cbb | 4199 | { |
3f76745e JM |
4200 | register dw_attr_ref a; |
4201 | register dw_die_ref c; | |
71dfc51f | 4202 | |
3f76745e | 4203 | print_spaces (outfile); |
2d8b0f3a | 4204 | fprintf (outfile, "DIE %4lu: %s\n", |
3f76745e JM |
4205 | die->die_offset, dwarf_tag_name (die->die_tag)); |
4206 | print_spaces (outfile); | |
2d8b0f3a JL |
4207 | fprintf (outfile, " abbrev id: %lu", die->die_abbrev); |
4208 | fprintf (outfile, " offset: %lu\n", die->die_offset); | |
3f76745e JM |
4209 | |
4210 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
a3f97cbb | 4211 | { |
3f76745e JM |
4212 | print_spaces (outfile); |
4213 | fprintf (outfile, " %s: ", dwarf_attr_name (a->dw_attr)); | |
4214 | ||
a96c67ec | 4215 | switch (AT_class (a)) |
3f76745e JM |
4216 | { |
4217 | case dw_val_class_addr: | |
4218 | fprintf (outfile, "address"); | |
4219 | break; | |
4220 | case dw_val_class_loc: | |
4221 | fprintf (outfile, "location descriptor"); | |
4222 | break; | |
4223 | case dw_val_class_const: | |
a96c67ec | 4224 | fprintf (outfile, "%ld", AT_int (a)); |
3f76745e JM |
4225 | break; |
4226 | case dw_val_class_unsigned_const: | |
a96c67ec | 4227 | fprintf (outfile, "%lu", AT_unsigned (a)); |
3f76745e JM |
4228 | break; |
4229 | case dw_val_class_long_long: | |
2d8b0f3a | 4230 | fprintf (outfile, "constant (%lu,%lu)", |
3f76745e JM |
4231 | a->dw_attr_val.v.val_long_long.hi, |
4232 | a->dw_attr_val.v.val_long_long.low); | |
4233 | break; | |
4234 | case dw_val_class_float: | |
4235 | fprintf (outfile, "floating-point constant"); | |
4236 | break; | |
4237 | case dw_val_class_flag: | |
a96c67ec | 4238 | fprintf (outfile, "%u", AT_flag (a)); |
3f76745e JM |
4239 | break; |
4240 | case dw_val_class_die_ref: | |
a96c67ec JM |
4241 | if (AT_ref (a) != NULL) |
4242 | fprintf (outfile, "die -> %lu", AT_ref (a)->die_offset); | |
3f76745e JM |
4243 | else |
4244 | fprintf (outfile, "die -> <null>"); | |
4245 | break; | |
4246 | case dw_val_class_lbl_id: | |
8b790721 | 4247 | case dw_val_class_lbl_offset: |
a96c67ec | 4248 | fprintf (outfile, "label: %s", AT_lbl (a)); |
3f76745e | 4249 | break; |
3f76745e | 4250 | case dw_val_class_str: |
a96c67ec JM |
4251 | if (AT_string (a) != NULL) |
4252 | fprintf (outfile, "\"%s\"", AT_string (a)); | |
3f76745e JM |
4253 | else |
4254 | fprintf (outfile, "<null>"); | |
4255 | break; | |
e9a25f70 JL |
4256 | default: |
4257 | break; | |
3f76745e JM |
4258 | } |
4259 | ||
4260 | fprintf (outfile, "\n"); | |
4261 | } | |
4262 | ||
4263 | if (die->die_child != NULL) | |
4264 | { | |
4265 | print_indent += 4; | |
4266 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4267 | print_die (c, outfile); | |
71dfc51f | 4268 | |
3f76745e | 4269 | print_indent -= 4; |
a3f97cbb | 4270 | } |
a3f97cbb JW |
4271 | } |
4272 | ||
3f76745e JM |
4273 | /* Print the contents of the source code line number correspondence table. |
4274 | This routine is a debugging aid only. */ | |
71dfc51f | 4275 | |
3f76745e JM |
4276 | static void |
4277 | print_dwarf_line_table (outfile) | |
4278 | FILE *outfile; | |
a3f97cbb | 4279 | { |
3f76745e JM |
4280 | register unsigned i; |
4281 | register dw_line_info_ref line_info; | |
4282 | ||
4283 | fprintf (outfile, "\n\nDWARF source line information\n"); | |
4284 | for (i = 1; i < line_info_table_in_use; ++i) | |
a3f97cbb | 4285 | { |
3f76745e JM |
4286 | line_info = &line_info_table[i]; |
4287 | fprintf (outfile, "%5d: ", i); | |
4288 | fprintf (outfile, "%-20s", file_table[line_info->dw_file_num]); | |
2d8b0f3a | 4289 | fprintf (outfile, "%6ld", line_info->dw_line_num); |
3f76745e | 4290 | fprintf (outfile, "\n"); |
a3f97cbb | 4291 | } |
3f76745e JM |
4292 | |
4293 | fprintf (outfile, "\n\n"); | |
f37230f0 JM |
4294 | } |
4295 | ||
3f76745e JM |
4296 | /* Print the information collected for a given DIE. */ |
4297 | ||
4298 | void | |
4299 | debug_dwarf_die (die) | |
4300 | dw_die_ref die; | |
4301 | { | |
4302 | print_die (die, stderr); | |
4303 | } | |
4304 | ||
4305 | /* Print all DWARF information collected for the compilation unit. | |
4306 | This routine is a debugging aid only. */ | |
4307 | ||
4308 | void | |
4309 | debug_dwarf () | |
4310 | { | |
4311 | print_indent = 0; | |
4312 | print_die (comp_unit_die, stderr); | |
b2244e22 JW |
4313 | if (! DWARF2_ASM_LINE_DEBUG_INFO) |
4314 | print_dwarf_line_table (stderr); | |
3f76745e JM |
4315 | } |
4316 | \f | |
a96c67ec JM |
4317 | /* We build up the lists of children and attributes by pushing new ones |
4318 | onto the beginning of the list. Reverse the lists for DIE so that | |
4319 | they are in order of addition. */ | |
71dfc51f | 4320 | |
f37230f0 | 4321 | static void |
a96c67ec | 4322 | reverse_die_lists (die) |
3f76745e | 4323 | register dw_die_ref die; |
f37230f0 | 4324 | { |
a96c67ec JM |
4325 | register dw_die_ref c, cp, cn; |
4326 | register dw_attr_ref a, ap, an; | |
71dfc51f | 4327 | |
a96c67ec JM |
4328 | for (a = die->die_attr, ap = 0; a; a = an) |
4329 | { | |
4330 | an = a->dw_attr_next; | |
4331 | a->dw_attr_next = ap; | |
4332 | ap = a; | |
4333 | } | |
4334 | die->die_attr = ap; | |
71dfc51f | 4335 | |
a96c67ec JM |
4336 | for (c = die->die_child, cp = 0; c; c = cn) |
4337 | { | |
4338 | cn = c->die_sib; | |
4339 | c->die_sib = cp; | |
4340 | cp = c; | |
3f76745e | 4341 | } |
a96c67ec JM |
4342 | die->die_child = cp; |
4343 | } | |
4344 | ||
4345 | /* Traverse the DIE, reverse its lists of attributes and children, and | |
4346 | add a sibling attribute if it may have the effect of speeding up | |
4347 | access to siblings. To save some space, avoid generating sibling | |
4348 | attributes for DIE's without children. */ | |
4349 | ||
4350 | static void | |
4351 | add_sibling_attributes (die) | |
4352 | register dw_die_ref die; | |
4353 | { | |
4354 | register dw_die_ref c; | |
4355 | ||
4356 | reverse_die_lists (die); | |
4357 | ||
4358 | if (die != comp_unit_die && die->die_sib && die->die_child != NULL) | |
4359 | /* Add the sibling link to the front of the attribute list. */ | |
4360 | add_AT_die_ref (die, DW_AT_sibling, die->die_sib); | |
3f76745e JM |
4361 | |
4362 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4363 | add_sibling_attributes (c); | |
a3f97cbb JW |
4364 | } |
4365 | ||
3f76745e JM |
4366 | /* The format of each DIE (and its attribute value pairs) |
4367 | is encoded in an abbreviation table. This routine builds the | |
4368 | abbreviation table and assigns a unique abbreviation id for | |
4369 | each abbreviation entry. The children of each die are visited | |
4370 | recursively. */ | |
71dfc51f | 4371 | |
a3f97cbb | 4372 | static void |
3f76745e JM |
4373 | build_abbrev_table (die) |
4374 | register dw_die_ref die; | |
a3f97cbb | 4375 | { |
3f76745e JM |
4376 | register unsigned long abbrev_id; |
4377 | register unsigned long n_alloc; | |
4378 | register dw_die_ref c; | |
4379 | register dw_attr_ref d_attr, a_attr; | |
a3f97cbb JW |
4380 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) |
4381 | { | |
4382 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 4383 | |
3f76745e JM |
4384 | if (abbrev->die_tag == die->die_tag) |
4385 | { | |
4386 | if ((abbrev->die_child != NULL) == (die->die_child != NULL)) | |
4387 | { | |
4388 | a_attr = abbrev->die_attr; | |
4389 | d_attr = die->die_attr; | |
71dfc51f | 4390 | |
3f76745e JM |
4391 | while (a_attr != NULL && d_attr != NULL) |
4392 | { | |
4393 | if ((a_attr->dw_attr != d_attr->dw_attr) | |
a96c67ec | 4394 | || (value_format (a_attr) != value_format (d_attr))) |
3f76745e | 4395 | break; |
71dfc51f | 4396 | |
3f76745e JM |
4397 | a_attr = a_attr->dw_attr_next; |
4398 | d_attr = d_attr->dw_attr_next; | |
4399 | } | |
71dfc51f | 4400 | |
3f76745e JM |
4401 | if (a_attr == NULL && d_attr == NULL) |
4402 | break; | |
4403 | } | |
4404 | } | |
4405 | } | |
71dfc51f | 4406 | |
3f76745e JM |
4407 | if (abbrev_id >= abbrev_die_table_in_use) |
4408 | { | |
4409 | if (abbrev_die_table_in_use >= abbrev_die_table_allocated) | |
a3f97cbb | 4410 | { |
3f76745e JM |
4411 | n_alloc = abbrev_die_table_allocated + ABBREV_DIE_TABLE_INCREMENT; |
4412 | abbrev_die_table | |
c760091a | 4413 | = (dw_die_ref *) xrealloc (abbrev_die_table, |
966f5dff | 4414 | sizeof (dw_die_ref) * n_alloc); |
71dfc51f | 4415 | |
3f76745e JM |
4416 | bzero ((char *) &abbrev_die_table[abbrev_die_table_allocated], |
4417 | (n_alloc - abbrev_die_table_allocated) * sizeof (dw_die_ref)); | |
4418 | abbrev_die_table_allocated = n_alloc; | |
a3f97cbb | 4419 | } |
71dfc51f | 4420 | |
3f76745e JM |
4421 | ++abbrev_die_table_in_use; |
4422 | abbrev_die_table[abbrev_id] = die; | |
a3f97cbb | 4423 | } |
3f76745e JM |
4424 | |
4425 | die->die_abbrev = abbrev_id; | |
4426 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4427 | build_abbrev_table (c); | |
a3f97cbb | 4428 | } |
3f76745e | 4429 | \f |
243e7835 JW |
4430 | /* Return the size of a string, including the null byte. |
4431 | ||
4432 | This used to treat backslashes as escapes, and hence they were not included | |
4433 | in the count. However, that conflicts with what ASM_OUTPUT_ASCII does, | |
4434 | which treats a backslash as a backslash, escaping it if necessary, and hence | |
4435 | we must include them in the count. */ | |
a3f97cbb | 4436 | |
3f76745e JM |
4437 | static unsigned long |
4438 | size_of_string (str) | |
a96c67ec | 4439 | register const char *str; |
3f76745e | 4440 | { |
243e7835 | 4441 | return strlen (str) + 1; |
3f76745e JM |
4442 | } |
4443 | ||
4444 | /* Return the size of a location descriptor. */ | |
4445 | ||
4446 | static unsigned long | |
4447 | size_of_loc_descr (loc) | |
a3f97cbb JW |
4448 | register dw_loc_descr_ref loc; |
4449 | { | |
3f76745e | 4450 | register unsigned long size = 1; |
71dfc51f | 4451 | |
a3f97cbb JW |
4452 | switch (loc->dw_loc_opc) |
4453 | { | |
4454 | case DW_OP_addr: | |
3f76745e | 4455 | size += PTR_SIZE; |
a3f97cbb JW |
4456 | break; |
4457 | case DW_OP_const1u: | |
4458 | case DW_OP_const1s: | |
3f76745e | 4459 | size += 1; |
a3f97cbb JW |
4460 | break; |
4461 | case DW_OP_const2u: | |
4462 | case DW_OP_const2s: | |
3f76745e | 4463 | size += 2; |
a3f97cbb JW |
4464 | break; |
4465 | case DW_OP_const4u: | |
4466 | case DW_OP_const4s: | |
3f76745e | 4467 | size += 4; |
a3f97cbb JW |
4468 | break; |
4469 | case DW_OP_const8u: | |
4470 | case DW_OP_const8s: | |
3f76745e | 4471 | size += 8; |
a3f97cbb JW |
4472 | break; |
4473 | case DW_OP_constu: | |
3f76745e | 4474 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4475 | break; |
4476 | case DW_OP_consts: | |
3f76745e | 4477 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4478 | break; |
4479 | case DW_OP_pick: | |
3f76745e | 4480 | size += 1; |
a3f97cbb JW |
4481 | break; |
4482 | case DW_OP_plus_uconst: | |
3f76745e | 4483 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4484 | break; |
4485 | case DW_OP_skip: | |
4486 | case DW_OP_bra: | |
3f76745e | 4487 | size += 2; |
a3f97cbb JW |
4488 | break; |
4489 | case DW_OP_breg0: | |
4490 | case DW_OP_breg1: | |
4491 | case DW_OP_breg2: | |
4492 | case DW_OP_breg3: | |
4493 | case DW_OP_breg4: | |
4494 | case DW_OP_breg5: | |
4495 | case DW_OP_breg6: | |
4496 | case DW_OP_breg7: | |
4497 | case DW_OP_breg8: | |
4498 | case DW_OP_breg9: | |
4499 | case DW_OP_breg10: | |
4500 | case DW_OP_breg11: | |
4501 | case DW_OP_breg12: | |
4502 | case DW_OP_breg13: | |
4503 | case DW_OP_breg14: | |
4504 | case DW_OP_breg15: | |
4505 | case DW_OP_breg16: | |
4506 | case DW_OP_breg17: | |
4507 | case DW_OP_breg18: | |
4508 | case DW_OP_breg19: | |
4509 | case DW_OP_breg20: | |
4510 | case DW_OP_breg21: | |
4511 | case DW_OP_breg22: | |
4512 | case DW_OP_breg23: | |
4513 | case DW_OP_breg24: | |
4514 | case DW_OP_breg25: | |
4515 | case DW_OP_breg26: | |
4516 | case DW_OP_breg27: | |
4517 | case DW_OP_breg28: | |
4518 | case DW_OP_breg29: | |
4519 | case DW_OP_breg30: | |
4520 | case DW_OP_breg31: | |
3f76745e | 4521 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4522 | break; |
4523 | case DW_OP_regx: | |
3f76745e | 4524 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4525 | break; |
4526 | case DW_OP_fbreg: | |
3f76745e | 4527 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4528 | break; |
4529 | case DW_OP_bregx: | |
3f76745e JM |
4530 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
4531 | size += size_of_sleb128 (loc->dw_loc_oprnd2.v.val_int); | |
a3f97cbb JW |
4532 | break; |
4533 | case DW_OP_piece: | |
3f76745e | 4534 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4535 | break; |
4536 | case DW_OP_deref_size: | |
4537 | case DW_OP_xderef_size: | |
3f76745e | 4538 | size += 1; |
a3f97cbb JW |
4539 | break; |
4540 | default: | |
4541 | break; | |
4542 | } | |
3f76745e JM |
4543 | |
4544 | return size; | |
a3f97cbb JW |
4545 | } |
4546 | ||
3f76745e | 4547 | /* Return the size of a series of location descriptors. */ |
71dfc51f | 4548 | |
a3f97cbb | 4549 | static unsigned long |
3f76745e JM |
4550 | size_of_locs (loc) |
4551 | register dw_loc_descr_ref loc; | |
a3f97cbb | 4552 | { |
3f76745e | 4553 | register unsigned long size = 0; |
71dfc51f | 4554 | |
3f76745e JM |
4555 | for (; loc != NULL; loc = loc->dw_loc_next) |
4556 | size += size_of_loc_descr (loc); | |
4557 | ||
4558 | return size; | |
4559 | } | |
4560 | ||
4561 | /* Return the power-of-two number of bytes necessary to represent VALUE. */ | |
4562 | ||
4563 | static int | |
4564 | constant_size (value) | |
4565 | long unsigned value; | |
4566 | { | |
4567 | int log; | |
4568 | ||
4569 | if (value == 0) | |
4570 | log = 0; | |
a3f97cbb | 4571 | else |
3f76745e | 4572 | log = floor_log2 (value); |
71dfc51f | 4573 | |
3f76745e JM |
4574 | log = log / 8; |
4575 | log = 1 << (floor_log2 (log) + 1); | |
4576 | ||
4577 | return log; | |
a3f97cbb JW |
4578 | } |
4579 | ||
3f76745e JM |
4580 | /* Return the size of a DIE, as it is represented in the |
4581 | .debug_info section. */ | |
71dfc51f | 4582 | |
3f76745e JM |
4583 | static unsigned long |
4584 | size_of_die (die) | |
a3f97cbb JW |
4585 | register dw_die_ref die; |
4586 | { | |
3f76745e | 4587 | register unsigned long size = 0; |
a3f97cbb | 4588 | register dw_attr_ref a; |
71dfc51f | 4589 | |
3f76745e | 4590 | size += size_of_uleb128 (die->die_abbrev); |
a3f97cbb JW |
4591 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
4592 | { | |
a96c67ec | 4593 | switch (AT_class (a)) |
a3f97cbb JW |
4594 | { |
4595 | case dw_val_class_addr: | |
3f76745e | 4596 | size += PTR_SIZE; |
a3f97cbb JW |
4597 | break; |
4598 | case dw_val_class_loc: | |
3f76745e | 4599 | { |
a96c67ec | 4600 | register unsigned long lsize = size_of_locs (AT_loc (a)); |
71dfc51f | 4601 | |
3f76745e JM |
4602 | /* Block length. */ |
4603 | size += constant_size (lsize); | |
4604 | size += lsize; | |
4605 | } | |
a3f97cbb JW |
4606 | break; |
4607 | case dw_val_class_const: | |
3f76745e | 4608 | size += 4; |
a3f97cbb JW |
4609 | break; |
4610 | case dw_val_class_unsigned_const: | |
a96c67ec | 4611 | size += constant_size (AT_unsigned (a)); |
a3f97cbb | 4612 | break; |
469ac993 | 4613 | case dw_val_class_long_long: |
3f76745e | 4614 | size += 1 + 8; /* block */ |
469ac993 JM |
4615 | break; |
4616 | case dw_val_class_float: | |
3f76745e | 4617 | size += 1 + a->dw_attr_val.v.val_float.length * 4; /* block */ |
a3f97cbb JW |
4618 | break; |
4619 | case dw_val_class_flag: | |
3f76745e | 4620 | size += 1; |
a3f97cbb JW |
4621 | break; |
4622 | case dw_val_class_die_ref: | |
3f76745e | 4623 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
4624 | break; |
4625 | case dw_val_class_fde_ref: | |
3f76745e | 4626 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
4627 | break; |
4628 | case dw_val_class_lbl_id: | |
3f76745e JM |
4629 | size += PTR_SIZE; |
4630 | break; | |
8b790721 | 4631 | case dw_val_class_lbl_offset: |
3f76745e JM |
4632 | size += DWARF_OFFSET_SIZE; |
4633 | break; | |
4634 | case dw_val_class_str: | |
a96c67ec | 4635 | size += size_of_string (AT_string (a)); |
3f76745e JM |
4636 | break; |
4637 | default: | |
4638 | abort (); | |
4639 | } | |
a3f97cbb | 4640 | } |
3f76745e JM |
4641 | |
4642 | return size; | |
a3f97cbb JW |
4643 | } |
4644 | ||
956d6950 | 4645 | /* Size the debugging information associated with a given DIE. |
3f76745e JM |
4646 | Visits the DIE's children recursively. Updates the global |
4647 | variable next_die_offset, on each time through. Uses the | |
956d6950 | 4648 | current value of next_die_offset to update the die_offset |
3f76745e | 4649 | field in each DIE. */ |
71dfc51f | 4650 | |
a3f97cbb | 4651 | static void |
3f76745e JM |
4652 | calc_die_sizes (die) |
4653 | dw_die_ref die; | |
a3f97cbb | 4654 | { |
3f76745e JM |
4655 | register dw_die_ref c; |
4656 | die->die_offset = next_die_offset; | |
4657 | next_die_offset += size_of_die (die); | |
71dfc51f | 4658 | |
3f76745e JM |
4659 | for (c = die->die_child; c != NULL; c = c->die_sib) |
4660 | calc_die_sizes (c); | |
71dfc51f | 4661 | |
3f76745e JM |
4662 | if (die->die_child != NULL) |
4663 | /* Count the null byte used to terminate sibling lists. */ | |
4664 | next_die_offset += 1; | |
a3f97cbb JW |
4665 | } |
4666 | ||
3f76745e JM |
4667 | /* Return the size of the line information prolog generated for the |
4668 | compilation unit. */ | |
469ac993 | 4669 | |
3f76745e JM |
4670 | static unsigned long |
4671 | size_of_line_prolog () | |
a94dbf2c | 4672 | { |
3f76745e JM |
4673 | register unsigned long size; |
4674 | register unsigned long ft_index; | |
a94dbf2c | 4675 | |
3f76745e | 4676 | size = DWARF_LINE_PROLOG_HEADER_SIZE; |
469ac993 | 4677 | |
3f76745e JM |
4678 | /* Count the size of the table giving number of args for each |
4679 | standard opcode. */ | |
4680 | size += DWARF_LINE_OPCODE_BASE - 1; | |
71dfc51f | 4681 | |
3f76745e | 4682 | /* Include directory table is empty (at present). Count only the |
38e01259 | 4683 | null byte used to terminate the table. */ |
3f76745e | 4684 | size += 1; |
71dfc51f | 4685 | |
3f76745e JM |
4686 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
4687 | { | |
4688 | /* File name entry. */ | |
4689 | size += size_of_string (file_table[ft_index]); | |
a94dbf2c | 4690 | |
3f76745e JM |
4691 | /* Include directory index. */ |
4692 | size += size_of_uleb128 (0); | |
a94dbf2c | 4693 | |
3f76745e JM |
4694 | /* Modification time. */ |
4695 | size += size_of_uleb128 (0); | |
71dfc51f | 4696 | |
3f76745e JM |
4697 | /* File length in bytes. */ |
4698 | size += size_of_uleb128 (0); | |
a94dbf2c | 4699 | } |
71dfc51f | 4700 | |
3f76745e JM |
4701 | /* Count the file table terminator. */ |
4702 | size += 1; | |
4703 | return size; | |
a94dbf2c JM |
4704 | } |
4705 | ||
3f76745e JM |
4706 | /* Return the size of the .debug_pubnames table generated for the |
4707 | compilation unit. */ | |
a94dbf2c | 4708 | |
3f76745e JM |
4709 | static unsigned long |
4710 | size_of_pubnames () | |
a94dbf2c | 4711 | { |
3f76745e JM |
4712 | register unsigned long size; |
4713 | register unsigned i; | |
469ac993 | 4714 | |
3f76745e JM |
4715 | size = DWARF_PUBNAMES_HEADER_SIZE; |
4716 | for (i = 0; i < pubname_table_in_use; ++i) | |
a94dbf2c | 4717 | { |
3f76745e JM |
4718 | register pubname_ref p = &pubname_table[i]; |
4719 | size += DWARF_OFFSET_SIZE + size_of_string (p->name); | |
a94dbf2c JM |
4720 | } |
4721 | ||
3f76745e JM |
4722 | size += DWARF_OFFSET_SIZE; |
4723 | return size; | |
a94dbf2c JM |
4724 | } |
4725 | ||
956d6950 | 4726 | /* Return the size of the information in the .debug_aranges section. */ |
469ac993 | 4727 | |
3f76745e JM |
4728 | static unsigned long |
4729 | size_of_aranges () | |
469ac993 | 4730 | { |
3f76745e | 4731 | register unsigned long size; |
469ac993 | 4732 | |
3f76745e | 4733 | size = DWARF_ARANGES_HEADER_SIZE; |
469ac993 | 4734 | |
3f76745e JM |
4735 | /* Count the address/length pair for this compilation unit. */ |
4736 | size += 2 * PTR_SIZE; | |
4737 | size += 2 * PTR_SIZE * arange_table_in_use; | |
469ac993 | 4738 | |
3f76745e JM |
4739 | /* Count the two zero words used to terminated the address range table. */ |
4740 | size += 2 * PTR_SIZE; | |
4741 | return size; | |
4742 | } | |
4743 | \f | |
4744 | /* Select the encoding of an attribute value. */ | |
4745 | ||
4746 | static enum dwarf_form | |
a96c67ec JM |
4747 | value_format (a) |
4748 | dw_attr_ref a; | |
3f76745e | 4749 | { |
a96c67ec | 4750 | switch (a->dw_attr_val.val_class) |
469ac993 | 4751 | { |
3f76745e JM |
4752 | case dw_val_class_addr: |
4753 | return DW_FORM_addr; | |
4754 | case dw_val_class_loc: | |
a96c67ec | 4755 | switch (constant_size (size_of_locs (AT_loc (a)))) |
469ac993 | 4756 | { |
3f76745e JM |
4757 | case 1: |
4758 | return DW_FORM_block1; | |
4759 | case 2: | |
4760 | return DW_FORM_block2; | |
469ac993 JM |
4761 | default: |
4762 | abort (); | |
4763 | } | |
3f76745e JM |
4764 | case dw_val_class_const: |
4765 | return DW_FORM_data4; | |
4766 | case dw_val_class_unsigned_const: | |
a96c67ec | 4767 | switch (constant_size (AT_unsigned (a))) |
3f76745e JM |
4768 | { |
4769 | case 1: | |
4770 | return DW_FORM_data1; | |
4771 | case 2: | |
4772 | return DW_FORM_data2; | |
4773 | case 4: | |
4774 | return DW_FORM_data4; | |
4775 | case 8: | |
4776 | return DW_FORM_data8; | |
4777 | default: | |
4778 | abort (); | |
4779 | } | |
4780 | case dw_val_class_long_long: | |
4781 | return DW_FORM_block1; | |
4782 | case dw_val_class_float: | |
4783 | return DW_FORM_block1; | |
4784 | case dw_val_class_flag: | |
4785 | return DW_FORM_flag; | |
4786 | case dw_val_class_die_ref: | |
4787 | return DW_FORM_ref; | |
4788 | case dw_val_class_fde_ref: | |
4789 | return DW_FORM_data; | |
4790 | case dw_val_class_lbl_id: | |
4791 | return DW_FORM_addr; | |
8b790721 | 4792 | case dw_val_class_lbl_offset: |
3f76745e JM |
4793 | return DW_FORM_data; |
4794 | case dw_val_class_str: | |
4795 | return DW_FORM_string; | |
469ac993 JM |
4796 | default: |
4797 | abort (); | |
4798 | } | |
a94dbf2c JM |
4799 | } |
4800 | ||
3f76745e | 4801 | /* Output the encoding of an attribute value. */ |
469ac993 | 4802 | |
3f76745e | 4803 | static void |
a96c67ec JM |
4804 | output_value_format (a) |
4805 | dw_attr_ref a; | |
a94dbf2c | 4806 | { |
a96c67ec | 4807 | enum dwarf_form form = value_format (a); |
71dfc51f | 4808 | |
3f76745e | 4809 | output_uleb128 (form); |
c5cec899 | 4810 | if (flag_debug_asm) |
3f76745e | 4811 | fprintf (asm_out_file, " (%s)", dwarf_form_name (form)); |
141719a8 | 4812 | |
3f76745e JM |
4813 | fputc ('\n', asm_out_file); |
4814 | } | |
469ac993 | 4815 | |
3f76745e JM |
4816 | /* Output the .debug_abbrev section which defines the DIE abbreviation |
4817 | table. */ | |
469ac993 | 4818 | |
3f76745e JM |
4819 | static void |
4820 | output_abbrev_section () | |
4821 | { | |
4822 | unsigned long abbrev_id; | |
71dfc51f | 4823 | |
3f76745e JM |
4824 | dw_attr_ref a_attr; |
4825 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) | |
4826 | { | |
4827 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 4828 | |
3f76745e | 4829 | output_uleb128 (abbrev_id); |
c5cec899 | 4830 | if (flag_debug_asm) |
3f76745e | 4831 | fprintf (asm_out_file, " (abbrev code)"); |
469ac993 | 4832 | |
3f76745e JM |
4833 | fputc ('\n', asm_out_file); |
4834 | output_uleb128 (abbrev->die_tag); | |
c5cec899 | 4835 | if (flag_debug_asm) |
3f76745e JM |
4836 | fprintf (asm_out_file, " (TAG: %s)", |
4837 | dwarf_tag_name (abbrev->die_tag)); | |
71dfc51f | 4838 | |
3f76745e JM |
4839 | fputc ('\n', asm_out_file); |
4840 | fprintf (asm_out_file, "\t%s\t0x%x", ASM_BYTE_OP, | |
4841 | abbrev->die_child != NULL ? DW_children_yes : DW_children_no); | |
469ac993 | 4842 | |
c5cec899 | 4843 | if (flag_debug_asm) |
3f76745e JM |
4844 | fprintf (asm_out_file, "\t%s %s", |
4845 | ASM_COMMENT_START, | |
4846 | (abbrev->die_child != NULL | |
4847 | ? "DW_children_yes" : "DW_children_no")); | |
4848 | ||
4849 | fputc ('\n', asm_out_file); | |
4850 | ||
4851 | for (a_attr = abbrev->die_attr; a_attr != NULL; | |
4852 | a_attr = a_attr->dw_attr_next) | |
4853 | { | |
4854 | output_uleb128 (a_attr->dw_attr); | |
c5cec899 | 4855 | if (flag_debug_asm) |
3f76745e JM |
4856 | fprintf (asm_out_file, " (%s)", |
4857 | dwarf_attr_name (a_attr->dw_attr)); | |
4858 | ||
4859 | fputc ('\n', asm_out_file); | |
a96c67ec | 4860 | output_value_format (a_attr); |
469ac993 | 4861 | } |
469ac993 | 4862 | |
3f76745e | 4863 | fprintf (asm_out_file, "\t%s\t0,0\n", ASM_BYTE_OP); |
469ac993 | 4864 | } |
81f374eb HPN |
4865 | |
4866 | /* Terminate the table. */ | |
4867 | fprintf (asm_out_file, "\t%s\t0\n", ASM_BYTE_OP); | |
a94dbf2c JM |
4868 | } |
4869 | ||
3f76745e | 4870 | /* Output location description stack opcode's operands (if any). */ |
71dfc51f | 4871 | |
3f76745e JM |
4872 | static void |
4873 | output_loc_operands (loc) | |
4874 | register dw_loc_descr_ref loc; | |
a3f97cbb | 4875 | { |
3f76745e JM |
4876 | register dw_val_ref val1 = &loc->dw_loc_oprnd1; |
4877 | register dw_val_ref val2 = &loc->dw_loc_oprnd2; | |
71dfc51f | 4878 | |
3f76745e | 4879 | switch (loc->dw_loc_opc) |
a3f97cbb | 4880 | { |
3f76745e JM |
4881 | case DW_OP_addr: |
4882 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, val1->v.val_addr); | |
4883 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4884 | break; |
3f76745e JM |
4885 | case DW_OP_const1u: |
4886 | case DW_OP_const1s: | |
4887 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
4888 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4889 | break; |
3f76745e JM |
4890 | case DW_OP_const2u: |
4891 | case DW_OP_const2s: | |
4892 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
4893 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4894 | break; |
3f76745e JM |
4895 | case DW_OP_const4u: |
4896 | case DW_OP_const4s: | |
4897 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, val1->v.val_int); | |
4898 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4899 | break; |
3f76745e JM |
4900 | case DW_OP_const8u: |
4901 | case DW_OP_const8s: | |
4902 | abort (); | |
4903 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4904 | break; |
3f76745e JM |
4905 | case DW_OP_constu: |
4906 | output_uleb128 (val1->v.val_unsigned); | |
4907 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4908 | break; |
3f76745e JM |
4909 | case DW_OP_consts: |
4910 | output_sleb128 (val1->v.val_int); | |
4911 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4912 | break; |
3f76745e JM |
4913 | case DW_OP_pick: |
4914 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_int); | |
4915 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4916 | break; |
3f76745e JM |
4917 | case DW_OP_plus_uconst: |
4918 | output_uleb128 (val1->v.val_unsigned); | |
4919 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4920 | break; |
3f76745e JM |
4921 | case DW_OP_skip: |
4922 | case DW_OP_bra: | |
4923 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
4924 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4925 | break; |
3f76745e JM |
4926 | case DW_OP_breg0: |
4927 | case DW_OP_breg1: | |
4928 | case DW_OP_breg2: | |
4929 | case DW_OP_breg3: | |
4930 | case DW_OP_breg4: | |
4931 | case DW_OP_breg5: | |
4932 | case DW_OP_breg6: | |
4933 | case DW_OP_breg7: | |
4934 | case DW_OP_breg8: | |
4935 | case DW_OP_breg9: | |
4936 | case DW_OP_breg10: | |
4937 | case DW_OP_breg11: | |
4938 | case DW_OP_breg12: | |
4939 | case DW_OP_breg13: | |
4940 | case DW_OP_breg14: | |
4941 | case DW_OP_breg15: | |
4942 | case DW_OP_breg16: | |
4943 | case DW_OP_breg17: | |
4944 | case DW_OP_breg18: | |
4945 | case DW_OP_breg19: | |
4946 | case DW_OP_breg20: | |
4947 | case DW_OP_breg21: | |
4948 | case DW_OP_breg22: | |
4949 | case DW_OP_breg23: | |
4950 | case DW_OP_breg24: | |
4951 | case DW_OP_breg25: | |
4952 | case DW_OP_breg26: | |
4953 | case DW_OP_breg27: | |
4954 | case DW_OP_breg28: | |
4955 | case DW_OP_breg29: | |
4956 | case DW_OP_breg30: | |
4957 | case DW_OP_breg31: | |
4958 | output_sleb128 (val1->v.val_int); | |
4959 | fputc ('\n', asm_out_file); | |
4960 | break; | |
4961 | case DW_OP_regx: | |
4962 | output_uleb128 (val1->v.val_unsigned); | |
4963 | fputc ('\n', asm_out_file); | |
4964 | break; | |
4965 | case DW_OP_fbreg: | |
4966 | output_sleb128 (val1->v.val_int); | |
4967 | fputc ('\n', asm_out_file); | |
4968 | break; | |
4969 | case DW_OP_bregx: | |
4970 | output_uleb128 (val1->v.val_unsigned); | |
4971 | fputc ('\n', asm_out_file); | |
4972 | output_sleb128 (val2->v.val_int); | |
4973 | fputc ('\n', asm_out_file); | |
4974 | break; | |
4975 | case DW_OP_piece: | |
4976 | output_uleb128 (val1->v.val_unsigned); | |
4977 | fputc ('\n', asm_out_file); | |
4978 | break; | |
4979 | case DW_OP_deref_size: | |
4980 | case DW_OP_xderef_size: | |
4981 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
4982 | fputc ('\n', asm_out_file); | |
a3f97cbb JW |
4983 | break; |
4984 | default: | |
4985 | break; | |
4986 | } | |
a3f97cbb JW |
4987 | } |
4988 | ||
3f76745e JM |
4989 | /* Output the DIE and its attributes. Called recursively to generate |
4990 | the definitions of each child DIE. */ | |
71dfc51f | 4991 | |
a3f97cbb | 4992 | static void |
3f76745e JM |
4993 | output_die (die) |
4994 | register dw_die_ref die; | |
a3f97cbb | 4995 | { |
3f76745e JM |
4996 | register dw_attr_ref a; |
4997 | register dw_die_ref c; | |
3f76745e JM |
4998 | register unsigned long size; |
4999 | register dw_loc_descr_ref loc; | |
a94dbf2c | 5000 | |
3f76745e | 5001 | output_uleb128 (die->die_abbrev); |
c5cec899 | 5002 | if (flag_debug_asm) |
2d8b0f3a | 5003 | fprintf (asm_out_file, " (DIE (0x%lx) %s)", |
3f76745e | 5004 | die->die_offset, dwarf_tag_name (die->die_tag)); |
a94dbf2c | 5005 | |
3f76745e | 5006 | fputc ('\n', asm_out_file); |
a94dbf2c | 5007 | |
3f76745e | 5008 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
a3f97cbb | 5009 | { |
a96c67ec | 5010 | switch (AT_class (a)) |
3f76745e JM |
5011 | { |
5012 | case dw_val_class_addr: | |
a96c67ec | 5013 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, AT_addr (a)); |
3f76745e | 5014 | break; |
a3f97cbb | 5015 | |
3f76745e | 5016 | case dw_val_class_loc: |
a96c67ec | 5017 | size = size_of_locs (AT_loc (a)); |
71dfc51f | 5018 | |
3f76745e JM |
5019 | /* Output the block length for this list of location operations. */ |
5020 | switch (constant_size (size)) | |
5021 | { | |
5022 | case 1: | |
5023 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, size); | |
5024 | break; | |
5025 | case 2: | |
5026 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, size); | |
5027 | break; | |
5028 | default: | |
5029 | abort (); | |
5030 | } | |
71dfc51f | 5031 | |
c5cec899 | 5032 | if (flag_debug_asm) |
3f76745e JM |
5033 | fprintf (asm_out_file, "\t%s %s", |
5034 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
71dfc51f | 5035 | |
3f76745e | 5036 | fputc ('\n', asm_out_file); |
a96c67ec | 5037 | for (loc = AT_loc (a); loc != NULL; loc = loc->dw_loc_next) |
3f76745e JM |
5038 | { |
5039 | /* Output the opcode. */ | |
5040 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, loc->dw_loc_opc); | |
c5cec899 | 5041 | if (flag_debug_asm) |
3f76745e JM |
5042 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
5043 | dwarf_stack_op_name (loc->dw_loc_opc)); | |
71dfc51f | 5044 | |
3f76745e | 5045 | fputc ('\n', asm_out_file); |
71dfc51f | 5046 | |
3f76745e JM |
5047 | /* Output the operand(s) (if any). */ |
5048 | output_loc_operands (loc); | |
5049 | } | |
a3f97cbb | 5050 | break; |
3f76745e JM |
5051 | |
5052 | case dw_val_class_const: | |
a96c67ec | 5053 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, AT_int (a)); |
a3f97cbb | 5054 | break; |
3f76745e JM |
5055 | |
5056 | case dw_val_class_unsigned_const: | |
a96c67ec | 5057 | switch (constant_size (AT_unsigned (a))) |
3f76745e JM |
5058 | { |
5059 | case 1: | |
a96c67ec | 5060 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
5061 | break; |
5062 | case 2: | |
a96c67ec | 5063 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
5064 | break; |
5065 | case 4: | |
a96c67ec | 5066 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, AT_unsigned (a)); |
3f76745e JM |
5067 | break; |
5068 | case 8: | |
5069 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
5070 | a->dw_attr_val.v.val_long_long.hi, | |
5071 | a->dw_attr_val.v.val_long_long.low); | |
5072 | break; | |
5073 | default: | |
5074 | abort (); | |
5075 | } | |
a3f97cbb | 5076 | break; |
3f76745e JM |
5077 | |
5078 | case dw_val_class_long_long: | |
5079 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 8); | |
c5cec899 | 5080 | if (flag_debug_asm) |
3f76745e JM |
5081 | fprintf (asm_out_file, "\t%s %s", |
5082 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5083 | ||
5084 | fputc ('\n', asm_out_file); | |
5085 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
5086 | a->dw_attr_val.v.val_long_long.hi, | |
5087 | a->dw_attr_val.v.val_long_long.low); | |
5088 | ||
c5cec899 | 5089 | if (flag_debug_asm) |
3f76745e JM |
5090 | fprintf (asm_out_file, |
5091 | "\t%s long long constant", ASM_COMMENT_START); | |
5092 | ||
5093 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5094 | break; |
3f76745e JM |
5095 | |
5096 | case dw_val_class_float: | |
c84e2712 KG |
5097 | { |
5098 | register unsigned int i; | |
5099 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5100 | a->dw_attr_val.v.val_float.length * 4); | |
5101 | if (flag_debug_asm) | |
5102 | fprintf (asm_out_file, "\t%s %s", | |
5103 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5104 | ||
5105 | fputc ('\n', asm_out_file); | |
5106 | for (i = 0; i < a->dw_attr_val.v.val_float.length; ++i) | |
5107 | { | |
5108 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, | |
5109 | a->dw_attr_val.v.val_float.array[i]); | |
5110 | if (flag_debug_asm) | |
5111 | fprintf (asm_out_file, "\t%s fp constant word %u", | |
5112 | ASM_COMMENT_START, i); | |
5113 | ||
5114 | fputc ('\n', asm_out_file); | |
5115 | } | |
a3f97cbb | 5116 | break; |
c84e2712 | 5117 | } |
3f76745e JM |
5118 | |
5119 | case dw_val_class_flag: | |
a96c67ec | 5120 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, AT_flag (a)); |
a3f97cbb | 5121 | break; |
3f76745e JM |
5122 | |
5123 | case dw_val_class_die_ref: | |
a96c67ec | 5124 | ASM_OUTPUT_DWARF_DATA (asm_out_file, AT_ref (a)->die_offset); |
a3f97cbb | 5125 | break; |
3f76745e JM |
5126 | |
5127 | case dw_val_class_fde_ref: | |
a6ab3aad JM |
5128 | { |
5129 | char l1[20]; | |
5130 | ASM_GENERATE_INTERNAL_LABEL | |
5131 | (l1, FDE_AFTER_SIZE_LABEL, a->dw_attr_val.v.val_fde_index * 2); | |
5132 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, l1); | |
5133 | fprintf (asm_out_file, " - %d", DWARF_OFFSET_SIZE); | |
5134 | } | |
a3f97cbb | 5135 | break; |
a3f97cbb | 5136 | |
3f76745e | 5137 | case dw_val_class_lbl_id: |
a96c67ec | 5138 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, AT_lbl (a)); |
3f76745e | 5139 | break; |
71dfc51f | 5140 | |
8b790721 | 5141 | case dw_val_class_lbl_offset: |
a96c67ec | 5142 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, AT_lbl (a)); |
3f76745e | 5143 | break; |
a3f97cbb | 5144 | |
3f76745e | 5145 | case dw_val_class_str: |
8d4e65a6 | 5146 | if (flag_debug_asm) |
a96c67ec | 5147 | ASM_OUTPUT_DWARF_STRING (asm_out_file, AT_string (a)); |
8d4e65a6 | 5148 | else |
a96c67ec JM |
5149 | ASM_OUTPUT_ASCII (asm_out_file, AT_string (a), |
5150 | (int) strlen (AT_string (a)) + 1); | |
3f76745e | 5151 | break; |
b2932ae5 | 5152 | |
3f76745e JM |
5153 | default: |
5154 | abort (); | |
5155 | } | |
a94dbf2c | 5156 | |
a96c67ec JM |
5157 | if (AT_class (a) != dw_val_class_loc |
5158 | && AT_class (a) != dw_val_class_long_long | |
5159 | && AT_class (a) != dw_val_class_float) | |
3f76745e | 5160 | { |
c5cec899 | 5161 | if (flag_debug_asm) |
3f76745e JM |
5162 | fprintf (asm_out_file, "\t%s %s", |
5163 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
b2932ae5 | 5164 | |
3f76745e JM |
5165 | fputc ('\n', asm_out_file); |
5166 | } | |
5167 | } | |
71dfc51f | 5168 | |
3f76745e JM |
5169 | for (c = die->die_child; c != NULL; c = c->die_sib) |
5170 | output_die (c); | |
71dfc51f | 5171 | |
3f76745e | 5172 | if (die->die_child != NULL) |
7e23cb16 | 5173 | { |
3f76745e JM |
5174 | /* Add null byte to terminate sibling list. */ |
5175 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5176 | if (flag_debug_asm) |
2d8b0f3a | 5177 | fprintf (asm_out_file, "\t%s end of children of DIE 0x%lx", |
3f76745e JM |
5178 | ASM_COMMENT_START, die->die_offset); |
5179 | ||
7e23cb16 JM |
5180 | fputc ('\n', asm_out_file); |
5181 | } | |
3f76745e | 5182 | } |
71dfc51f | 5183 | |
3f76745e JM |
5184 | /* Output the compilation unit that appears at the beginning of the |
5185 | .debug_info section, and precedes the DIE descriptions. */ | |
71dfc51f | 5186 | |
3f76745e JM |
5187 | static void |
5188 | output_compilation_unit_header () | |
5189 | { | |
5190 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset - DWARF_OFFSET_SIZE); | |
c5cec899 | 5191 | if (flag_debug_asm) |
3f76745e JM |
5192 | fprintf (asm_out_file, "\t%s Length of Compilation Unit Info.", |
5193 | ASM_COMMENT_START); | |
71dfc51f | 5194 | |
a3f97cbb | 5195 | fputc ('\n', asm_out_file); |
3f76745e | 5196 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
c5cec899 | 5197 | if (flag_debug_asm) |
3f76745e | 5198 | fprintf (asm_out_file, "\t%s DWARF version number", ASM_COMMENT_START); |
71dfc51f | 5199 | |
a3f97cbb | 5200 | fputc ('\n', asm_out_file); |
8b790721 | 5201 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, abbrev_section_label); |
c5cec899 | 5202 | if (flag_debug_asm) |
3f76745e JM |
5203 | fprintf (asm_out_file, "\t%s Offset Into Abbrev. Section", |
5204 | ASM_COMMENT_START); | |
71dfc51f | 5205 | |
a3f97cbb | 5206 | fputc ('\n', asm_out_file); |
3f76745e | 5207 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); |
c5cec899 | 5208 | if (flag_debug_asm) |
3f76745e | 5209 | fprintf (asm_out_file, "\t%s Pointer Size (in bytes)", ASM_COMMENT_START); |
71dfc51f | 5210 | |
a3f97cbb | 5211 | fputc ('\n', asm_out_file); |
a3f97cbb JW |
5212 | } |
5213 | ||
a1d7ffe3 JM |
5214 | /* The DWARF2 pubname for a nested thingy looks like "A::f". The output |
5215 | of decl_printable_name for C++ looks like "A::f(int)". Let's drop the | |
5216 | argument list, and maybe the scope. */ | |
5217 | ||
d560ee52 | 5218 | static const char * |
a1d7ffe3 JM |
5219 | dwarf2_name (decl, scope) |
5220 | tree decl; | |
5221 | int scope; | |
5222 | { | |
5223 | return (*decl_printable_name) (decl, scope ? 1 : 0); | |
5224 | } | |
5225 | ||
d291dd49 | 5226 | /* Add a new entry to .debug_pubnames if appropriate. */ |
71dfc51f | 5227 | |
d291dd49 JM |
5228 | static void |
5229 | add_pubname (decl, die) | |
5230 | tree decl; | |
5231 | dw_die_ref die; | |
5232 | { | |
5233 | pubname_ref p; | |
5234 | ||
5235 | if (! TREE_PUBLIC (decl)) | |
5236 | return; | |
5237 | ||
5238 | if (pubname_table_in_use == pubname_table_allocated) | |
5239 | { | |
5240 | pubname_table_allocated += PUBNAME_TABLE_INCREMENT; | |
5241 | pubname_table = (pubname_ref) xrealloc | |
5242 | (pubname_table, pubname_table_allocated * sizeof (pubname_entry)); | |
5243 | } | |
71dfc51f | 5244 | |
d291dd49 JM |
5245 | p = &pubname_table[pubname_table_in_use++]; |
5246 | p->die = die; | |
a1d7ffe3 JM |
5247 | |
5248 | p->name = xstrdup (dwarf2_name (decl, 1)); | |
d291dd49 JM |
5249 | } |
5250 | ||
a3f97cbb JW |
5251 | /* Output the public names table used to speed up access to externally |
5252 | visible names. For now, only generate entries for externally | |
5253 | visible procedures. */ | |
71dfc51f | 5254 | |
a3f97cbb JW |
5255 | static void |
5256 | output_pubnames () | |
5257 | { | |
d291dd49 | 5258 | register unsigned i; |
71dfc51f RK |
5259 | register unsigned long pubnames_length = size_of_pubnames (); |
5260 | ||
5261 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pubnames_length); | |
5262 | ||
c5cec899 | 5263 | if (flag_debug_asm) |
71dfc51f RK |
5264 | fprintf (asm_out_file, "\t%s Length of Public Names Info.", |
5265 | ASM_COMMENT_START); | |
5266 | ||
a3f97cbb JW |
5267 | fputc ('\n', asm_out_file); |
5268 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
71dfc51f | 5269 | |
c5cec899 | 5270 | if (flag_debug_asm) |
71dfc51f RK |
5271 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5272 | ||
a3f97cbb | 5273 | fputc ('\n', asm_out_file); |
8b790721 | 5274 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, debug_info_section_label); |
c5cec899 | 5275 | if (flag_debug_asm) |
71dfc51f RK |
5276 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
5277 | ASM_COMMENT_START); | |
5278 | ||
a3f97cbb | 5279 | fputc ('\n', asm_out_file); |
7e23cb16 | 5280 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset); |
c5cec899 | 5281 | if (flag_debug_asm) |
71dfc51f RK |
5282 | fprintf (asm_out_file, "\t%s Compilation Unit Length", ASM_COMMENT_START); |
5283 | ||
a3f97cbb | 5284 | fputc ('\n', asm_out_file); |
d291dd49 | 5285 | for (i = 0; i < pubname_table_in_use; ++i) |
a3f97cbb | 5286 | { |
d291dd49 | 5287 | register pubname_ref pub = &pubname_table[i]; |
71dfc51f | 5288 | |
7e23cb16 | 5289 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pub->die->die_offset); |
c5cec899 | 5290 | if (flag_debug_asm) |
71dfc51f RK |
5291 | fprintf (asm_out_file, "\t%s DIE offset", ASM_COMMENT_START); |
5292 | ||
d291dd49 JM |
5293 | fputc ('\n', asm_out_file); |
5294 | ||
c5cec899 | 5295 | if (flag_debug_asm) |
8d4e65a6 JL |
5296 | { |
5297 | ASM_OUTPUT_DWARF_STRING (asm_out_file, pub->name); | |
5298 | fprintf (asm_out_file, "%s external name", ASM_COMMENT_START); | |
5299 | } | |
5300 | else | |
5301 | { | |
c84e2712 KG |
5302 | ASM_OUTPUT_ASCII (asm_out_file, pub->name, |
5303 | (int) strlen (pub->name) + 1); | |
8d4e65a6 | 5304 | } |
71dfc51f | 5305 | |
d291dd49 | 5306 | fputc ('\n', asm_out_file); |
a3f97cbb | 5307 | } |
71dfc51f | 5308 | |
7e23cb16 | 5309 | ASM_OUTPUT_DWARF_DATA (asm_out_file, 0); |
a3f97cbb JW |
5310 | fputc ('\n', asm_out_file); |
5311 | } | |
5312 | ||
d291dd49 | 5313 | /* Add a new entry to .debug_aranges if appropriate. */ |
71dfc51f | 5314 | |
d291dd49 JM |
5315 | static void |
5316 | add_arange (decl, die) | |
5317 | tree decl; | |
5318 | dw_die_ref die; | |
5319 | { | |
5320 | if (! DECL_SECTION_NAME (decl)) | |
5321 | return; | |
5322 | ||
5323 | if (arange_table_in_use == arange_table_allocated) | |
5324 | { | |
5325 | arange_table_allocated += ARANGE_TABLE_INCREMENT; | |
71dfc51f RK |
5326 | arange_table |
5327 | = (arange_ref) xrealloc (arange_table, | |
5328 | arange_table_allocated * sizeof (dw_die_ref)); | |
d291dd49 | 5329 | } |
71dfc51f | 5330 | |
d291dd49 JM |
5331 | arange_table[arange_table_in_use++] = die; |
5332 | } | |
5333 | ||
a3f97cbb JW |
5334 | /* Output the information that goes into the .debug_aranges table. |
5335 | Namely, define the beginning and ending address range of the | |
5336 | text section generated for this compilation unit. */ | |
71dfc51f | 5337 | |
a3f97cbb JW |
5338 | static void |
5339 | output_aranges () | |
5340 | { | |
d291dd49 | 5341 | register unsigned i; |
71dfc51f RK |
5342 | register unsigned long aranges_length = size_of_aranges (); |
5343 | ||
5344 | ASM_OUTPUT_DWARF_DATA (asm_out_file, aranges_length); | |
c5cec899 | 5345 | if (flag_debug_asm) |
71dfc51f RK |
5346 | fprintf (asm_out_file, "\t%s Length of Address Ranges Info.", |
5347 | ASM_COMMENT_START); | |
5348 | ||
a3f97cbb JW |
5349 | fputc ('\n', asm_out_file); |
5350 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
c5cec899 | 5351 | if (flag_debug_asm) |
71dfc51f RK |
5352 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5353 | ||
a3f97cbb | 5354 | fputc ('\n', asm_out_file); |
8b790721 | 5355 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, debug_info_section_label); |
c5cec899 | 5356 | if (flag_debug_asm) |
71dfc51f RK |
5357 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
5358 | ASM_COMMENT_START); | |
5359 | ||
a3f97cbb JW |
5360 | fputc ('\n', asm_out_file); |
5361 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); | |
c5cec899 | 5362 | if (flag_debug_asm) |
71dfc51f RK |
5363 | fprintf (asm_out_file, "\t%s Size of Address", ASM_COMMENT_START); |
5364 | ||
a3f97cbb JW |
5365 | fputc ('\n', asm_out_file); |
5366 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5367 | if (flag_debug_asm) |
71dfc51f RK |
5368 | fprintf (asm_out_file, "\t%s Size of Segment Descriptor", |
5369 | ASM_COMMENT_START); | |
5370 | ||
a3f97cbb | 5371 | fputc ('\n', asm_out_file); |
b122caab JW |
5372 | /* We need to align to twice the pointer size here. |
5373 | If DWARF_OFFSET_SIZE == 4, then we have emitted 12 bytes, and need 4 | |
5374 | bytes of padding to align for either 4 or 8 byte pointers. */ | |
5375 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); | |
5376 | /* If DWARF_OFFSET_SIZE == 8, then we have emitted 20 bytes, and need 12 | |
5377 | bytes of padding to align for 8 byte pointers. We have already emitted | |
5378 | 4 bytes of padding, so emit 8 more here. */ | |
5379 | if (DWARF_OFFSET_SIZE == 8) | |
7e23cb16 | 5380 | fprintf (asm_out_file, ",0,0"); |
71dfc51f | 5381 | |
c5cec899 | 5382 | if (flag_debug_asm) |
71dfc51f RK |
5383 | fprintf (asm_out_file, "\t%s Pad to %d byte boundary", |
5384 | ASM_COMMENT_START, 2 * PTR_SIZE); | |
5385 | ||
a3f97cbb | 5386 | fputc ('\n', asm_out_file); |
8b790721 | 5387 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_section_label); |
c5cec899 | 5388 | if (flag_debug_asm) |
71dfc51f RK |
5389 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
5390 | ||
a3f97cbb | 5391 | fputc ('\n', asm_out_file); |
71208e03 | 5392 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, text_end_label, |
8b790721 | 5393 | text_section_label); |
c5cec899 | 5394 | if (flag_debug_asm) |
71dfc51f RK |
5395 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
5396 | ||
a3f97cbb | 5397 | fputc ('\n', asm_out_file); |
d291dd49 JM |
5398 | for (i = 0; i < arange_table_in_use; ++i) |
5399 | { | |
e689ae67 | 5400 | dw_die_ref die = arange_table[i]; |
71dfc51f | 5401 | |
e689ae67 JM |
5402 | if (die->die_tag == DW_TAG_subprogram) |
5403 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, get_AT_low_pc (die)); | |
d291dd49 | 5404 | else |
a1d7ffe3 | 5405 | { |
e689ae67 JM |
5406 | /* A static variable; extract the symbol from DW_AT_location. |
5407 | Note that this code isn't currently hit, as we only emit | |
5408 | aranges for functions (jason 9/23/99). */ | |
71dfc51f | 5409 | |
e689ae67 JM |
5410 | dw_attr_ref a = get_AT (die, DW_AT_location); |
5411 | dw_loc_descr_ref loc; | |
a96c67ec | 5412 | if (! a || AT_class (a) != dw_val_class_loc) |
e689ae67 JM |
5413 | abort (); |
5414 | ||
a96c67ec | 5415 | loc = AT_loc (a); |
e689ae67 JM |
5416 | if (loc->dw_loc_opc != DW_OP_addr) |
5417 | abort (); | |
5418 | ||
1865dbb5 JM |
5419 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, |
5420 | loc->dw_loc_oprnd1.v.val_addr); | |
a1d7ffe3 | 5421 | } |
71dfc51f | 5422 | |
c5cec899 | 5423 | if (flag_debug_asm) |
71dfc51f RK |
5424 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
5425 | ||
d291dd49 | 5426 | fputc ('\n', asm_out_file); |
e689ae67 JM |
5427 | if (die->die_tag == DW_TAG_subprogram) |
5428 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, get_AT_hi_pc (die), | |
5429 | get_AT_low_pc (die)); | |
d291dd49 | 5430 | else |
7e23cb16 | 5431 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, |
e689ae67 | 5432 | get_AT_unsigned (die, DW_AT_byte_size)); |
71dfc51f | 5433 | |
c5cec899 | 5434 | if (flag_debug_asm) |
71dfc51f RK |
5435 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
5436 | ||
d291dd49 JM |
5437 | fputc ('\n', asm_out_file); |
5438 | } | |
71dfc51f | 5439 | |
a3f97cbb | 5440 | /* Output the terminator words. */ |
7e23cb16 | 5441 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb | 5442 | fputc ('\n', asm_out_file); |
7e23cb16 | 5443 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb JW |
5444 | fputc ('\n', asm_out_file); |
5445 | } | |
5446 | ||
5447 | /* Output the source line number correspondence information. This | |
14a774a9 | 5448 | information goes into the .debug_line section. */ |
71dfc51f | 5449 | |
a3f97cbb JW |
5450 | static void |
5451 | output_line_info () | |
5452 | { | |
a3f97cbb JW |
5453 | char line_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
5454 | char prev_line_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
5455 | register unsigned opc; | |
5456 | register unsigned n_op_args; | |
a3f97cbb JW |
5457 | register unsigned long ft_index; |
5458 | register unsigned long lt_index; | |
5459 | register unsigned long current_line; | |
5460 | register long line_offset; | |
5461 | register long line_delta; | |
5462 | register unsigned long current_file; | |
e90b62db | 5463 | register unsigned long function; |
71dfc51f | 5464 | |
14a774a9 | 5465 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, ".LTEND", ".LTSTART"); |
c5cec899 | 5466 | if (flag_debug_asm) |
71dfc51f RK |
5467 | fprintf (asm_out_file, "\t%s Length of Source Line Info.", |
5468 | ASM_COMMENT_START); | |
5469 | ||
a3f97cbb | 5470 | fputc ('\n', asm_out_file); |
14a774a9 | 5471 | ASM_OUTPUT_LABEL (asm_out_file, ".LTSTART"); |
a3f97cbb | 5472 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
c5cec899 | 5473 | if (flag_debug_asm) |
71dfc51f RK |
5474 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5475 | ||
a3f97cbb | 5476 | fputc ('\n', asm_out_file); |
7e23cb16 | 5477 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_prolog ()); |
c5cec899 | 5478 | if (flag_debug_asm) |
71dfc51f RK |
5479 | fprintf (asm_out_file, "\t%s Prolog Length", ASM_COMMENT_START); |
5480 | ||
a3f97cbb JW |
5481 | fputc ('\n', asm_out_file); |
5482 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_MIN_INSTR_LENGTH); | |
c5cec899 | 5483 | if (flag_debug_asm) |
71dfc51f RK |
5484 | fprintf (asm_out_file, "\t%s Minimum Instruction Length", |
5485 | ASM_COMMENT_START); | |
5486 | ||
a3f97cbb JW |
5487 | fputc ('\n', asm_out_file); |
5488 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_DEFAULT_IS_STMT_START); | |
c5cec899 | 5489 | if (flag_debug_asm) |
71dfc51f RK |
5490 | fprintf (asm_out_file, "\t%s Default is_stmt_start flag", |
5491 | ASM_COMMENT_START); | |
5492 | ||
a3f97cbb JW |
5493 | fputc ('\n', asm_out_file); |
5494 | fprintf (asm_out_file, "\t%s\t%d", ASM_BYTE_OP, DWARF_LINE_BASE); | |
c5cec899 | 5495 | if (flag_debug_asm) |
71dfc51f RK |
5496 | fprintf (asm_out_file, "\t%s Line Base Value (Special Opcodes)", |
5497 | ASM_COMMENT_START); | |
5498 | ||
a3f97cbb JW |
5499 | fputc ('\n', asm_out_file); |
5500 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_RANGE); | |
c5cec899 | 5501 | if (flag_debug_asm) |
71dfc51f RK |
5502 | fprintf (asm_out_file, "\t%s Line Range Value (Special Opcodes)", |
5503 | ASM_COMMENT_START); | |
5504 | ||
a3f97cbb JW |
5505 | fputc ('\n', asm_out_file); |
5506 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_OPCODE_BASE); | |
c5cec899 | 5507 | if (flag_debug_asm) |
71dfc51f RK |
5508 | fprintf (asm_out_file, "\t%s Special Opcode Base", ASM_COMMENT_START); |
5509 | ||
a3f97cbb JW |
5510 | fputc ('\n', asm_out_file); |
5511 | for (opc = 1; opc < DWARF_LINE_OPCODE_BASE; ++opc) | |
5512 | { | |
5513 | switch (opc) | |
5514 | { | |
5515 | case DW_LNS_advance_pc: | |
5516 | case DW_LNS_advance_line: | |
5517 | case DW_LNS_set_file: | |
5518 | case DW_LNS_set_column: | |
5519 | case DW_LNS_fixed_advance_pc: | |
5520 | n_op_args = 1; | |
5521 | break; | |
5522 | default: | |
5523 | n_op_args = 0; | |
5524 | break; | |
5525 | } | |
5526 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, n_op_args); | |
c5cec899 | 5527 | if (flag_debug_asm) |
71dfc51f RK |
5528 | fprintf (asm_out_file, "\t%s opcode: 0x%x has %d args", |
5529 | ASM_COMMENT_START, opc, n_op_args); | |
a3f97cbb JW |
5530 | fputc ('\n', asm_out_file); |
5531 | } | |
71dfc51f | 5532 | |
c5cec899 | 5533 | if (flag_debug_asm) |
71dfc51f RK |
5534 | fprintf (asm_out_file, "%s Include Directory Table\n", ASM_COMMENT_START); |
5535 | ||
a3f97cbb JW |
5536 | /* Include directory table is empty, at present */ |
5537 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
5538 | fputc ('\n', asm_out_file); | |
c5cec899 | 5539 | if (flag_debug_asm) |
71dfc51f RK |
5540 | fprintf (asm_out_file, "%s File Name Table\n", ASM_COMMENT_START); |
5541 | ||
a3f97cbb JW |
5542 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
5543 | { | |
c5cec899 | 5544 | if (flag_debug_asm) |
8d4e65a6 JL |
5545 | { |
5546 | ASM_OUTPUT_DWARF_STRING (asm_out_file, file_table[ft_index]); | |
2d8b0f3a | 5547 | fprintf (asm_out_file, "%s File Entry: 0x%lx", |
8d4e65a6 JL |
5548 | ASM_COMMENT_START, ft_index); |
5549 | } | |
5550 | else | |
5551 | { | |
5552 | ASM_OUTPUT_ASCII (asm_out_file, | |
5553 | file_table[ft_index], | |
c84e2712 | 5554 | (int) strlen (file_table[ft_index]) + 1); |
8d4e65a6 | 5555 | } |
71dfc51f | 5556 | |
a3f97cbb | 5557 | fputc ('\n', asm_out_file); |
71dfc51f | 5558 | |
a3f97cbb JW |
5559 | /* Include directory index */ |
5560 | output_uleb128 (0); | |
5561 | fputc ('\n', asm_out_file); | |
71dfc51f | 5562 | |
a3f97cbb JW |
5563 | /* Modification time */ |
5564 | output_uleb128 (0); | |
5565 | fputc ('\n', asm_out_file); | |
71dfc51f | 5566 | |
a3f97cbb JW |
5567 | /* File length in bytes */ |
5568 | output_uleb128 (0); | |
5569 | fputc ('\n', asm_out_file); | |
5570 | } | |
71dfc51f | 5571 | |
a3f97cbb JW |
5572 | /* Terminate the file name table */ |
5573 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
5574 | fputc ('\n', asm_out_file); | |
5575 | ||
2f22d404 JM |
5576 | /* We used to set the address register to the first location in the text |
5577 | section here, but that didn't accomplish anything since we already | |
5578 | have a line note for the opening brace of the first function. */ | |
a3f97cbb JW |
5579 | |
5580 | /* Generate the line number to PC correspondence table, encoded as | |
5581 | a series of state machine operations. */ | |
5582 | current_file = 1; | |
5583 | current_line = 1; | |
8b790721 | 5584 | strcpy (prev_line_label, text_section_label); |
a3f97cbb JW |
5585 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) |
5586 | { | |
2f22d404 JM |
5587 | register dw_line_info_ref line_info = &line_info_table[lt_index]; |
5588 | ||
10a11b75 JM |
5589 | #if 0 |
5590 | /* Disable this optimization for now; GDB wants to see two line notes | |
5591 | at the beginning of a function so it can find the end of the | |
5592 | prologue. */ | |
5593 | ||
2f22d404 JM |
5594 | /* Don't emit anything for redundant notes. Just updating the |
5595 | address doesn't accomplish anything, because we already assume | |
5596 | that anything after the last address is this line. */ | |
5597 | if (line_info->dw_line_num == current_line | |
5598 | && line_info->dw_file_num == current_file) | |
5599 | continue; | |
10a11b75 | 5600 | #endif |
71dfc51f | 5601 | |
f19a6894 JW |
5602 | /* Emit debug info for the address of the current line, choosing |
5603 | the encoding that uses the least amount of space. */ | |
5604 | /* ??? Unfortunately, we have little choice here currently, and must | |
5605 | always use the most general form. Gcc does not know the address | |
5606 | delta itself, so we can't use DW_LNS_advance_pc. There are no known | |
5607 | dwarf2 aware assemblers at this time, so we can't use any special | |
5608 | pseudo ops that would allow the assembler to optimally encode this for | |
5609 | us. Many ports do have length attributes which will give an upper | |
5610 | bound on the address range. We could perhaps use length attributes | |
5611 | to determine when it is safe to use DW_LNS_fixed_advance_pc. */ | |
5c90448c | 5612 | ASM_GENERATE_INTERNAL_LABEL (line_label, LINE_CODE_LABEL, lt_index); |
f19a6894 JW |
5613 | if (0) |
5614 | { | |
5615 | /* This can handle deltas up to 0xffff. This takes 3 bytes. */ | |
5616 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5617 | if (flag_debug_asm) |
f19a6894 JW |
5618 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5619 | ASM_COMMENT_START); | |
5620 | ||
5621 | fputc ('\n', asm_out_file); | |
5622 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, prev_line_label); | |
5623 | fputc ('\n', asm_out_file); | |
5624 | } | |
5625 | else | |
5626 | { | |
5627 | /* This can handle any delta. This takes 4+PTR_SIZE bytes. */ | |
5628 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5629 | if (flag_debug_asm) |
f19a6894 JW |
5630 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5631 | ASM_COMMENT_START); | |
5632 | fputc ('\n', asm_out_file); | |
5633 | output_uleb128 (1 + PTR_SIZE); | |
5634 | fputc ('\n', asm_out_file); | |
5635 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5636 | fputc ('\n', asm_out_file); | |
5637 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5638 | fputc ('\n', asm_out_file); | |
5639 | } | |
5640 | strcpy (prev_line_label, line_label); | |
5641 | ||
5642 | /* Emit debug info for the source file of the current line, if | |
5643 | different from the previous line. */ | |
a3f97cbb JW |
5644 | if (line_info->dw_file_num != current_file) |
5645 | { | |
5646 | current_file = line_info->dw_file_num; | |
5647 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 5648 | if (flag_debug_asm) |
71dfc51f RK |
5649 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
5650 | ||
a3f97cbb JW |
5651 | fputc ('\n', asm_out_file); |
5652 | output_uleb128 (current_file); | |
c5cec899 | 5653 | if (flag_debug_asm) |
b2932ae5 | 5654 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 5655 | |
a3f97cbb JW |
5656 | fputc ('\n', asm_out_file); |
5657 | } | |
71dfc51f | 5658 | |
f19a6894 JW |
5659 | /* Emit debug info for the current line number, choosing the encoding |
5660 | that uses the least amount of space. */ | |
2f22d404 | 5661 | if (line_info->dw_line_num != current_line) |
a3f97cbb | 5662 | { |
2f22d404 JM |
5663 | line_offset = line_info->dw_line_num - current_line; |
5664 | line_delta = line_offset - DWARF_LINE_BASE; | |
5665 | current_line = line_info->dw_line_num; | |
5666 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
5667 | { | |
5668 | /* This can handle deltas from -10 to 234, using the current | |
5669 | definitions of DWARF_LINE_BASE and DWARF_LINE_RANGE. This | |
5670 | takes 1 byte. */ | |
5671 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5672 | DWARF_LINE_OPCODE_BASE + line_delta); | |
5673 | if (flag_debug_asm) | |
5674 | fprintf (asm_out_file, | |
5675 | "\t%s line %ld", ASM_COMMENT_START, current_line); | |
71dfc51f | 5676 | |
2f22d404 JM |
5677 | fputc ('\n', asm_out_file); |
5678 | } | |
5679 | else | |
5680 | { | |
5681 | /* This can handle any delta. This takes at least 4 bytes, | |
5682 | depending on the value being encoded. */ | |
5683 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
5684 | if (flag_debug_asm) | |
5685 | fprintf (asm_out_file, "\t%s advance to line %ld", | |
5686 | ASM_COMMENT_START, current_line); | |
5687 | ||
5688 | fputc ('\n', asm_out_file); | |
5689 | output_sleb128 (line_offset); | |
5690 | fputc ('\n', asm_out_file); | |
5691 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
5692 | if (flag_debug_asm) | |
5693 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
5694 | fputc ('\n', asm_out_file); | |
5695 | } | |
a94dbf2c JM |
5696 | } |
5697 | else | |
5698 | { | |
2f22d404 | 5699 | /* We still need to start a new row, so output a copy insn. */ |
a94dbf2c | 5700 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); |
2f22d404 JM |
5701 | if (flag_debug_asm) |
5702 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
a94dbf2c | 5703 | fputc ('\n', asm_out_file); |
a3f97cbb | 5704 | } |
a3f97cbb JW |
5705 | } |
5706 | ||
f19a6894 JW |
5707 | /* Emit debug info for the address of the end of the function. */ |
5708 | if (0) | |
5709 | { | |
5710 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5711 | if (flag_debug_asm) |
f19a6894 JW |
5712 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5713 | ASM_COMMENT_START); | |
71dfc51f | 5714 | |
f19a6894 JW |
5715 | fputc ('\n', asm_out_file); |
5716 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, text_end_label, prev_line_label); | |
5717 | fputc ('\n', asm_out_file); | |
5718 | } | |
5719 | else | |
5720 | { | |
5721 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5722 | if (flag_debug_asm) |
f19a6894 JW |
5723 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); |
5724 | fputc ('\n', asm_out_file); | |
5725 | output_uleb128 (1 + PTR_SIZE); | |
5726 | fputc ('\n', asm_out_file); | |
5727 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5728 | fputc ('\n', asm_out_file); | |
5729 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_end_label); | |
5730 | fputc ('\n', asm_out_file); | |
5731 | } | |
bdb669cb | 5732 | |
a3f97cbb | 5733 | /* Output the marker for the end of the line number info. */ |
14a774a9 | 5734 | ASM_OUTPUT_LABEL (asm_out_file, ".LTEND"); |
a3f97cbb | 5735 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); |
c5cec899 | 5736 | if (flag_debug_asm) |
71dfc51f RK |
5737 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", ASM_COMMENT_START); |
5738 | ||
a3f97cbb JW |
5739 | fputc ('\n', asm_out_file); |
5740 | output_uleb128 (1); | |
5741 | fputc ('\n', asm_out_file); | |
5742 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
5743 | fputc ('\n', asm_out_file); | |
e90b62db JM |
5744 | |
5745 | function = 0; | |
5746 | current_file = 1; | |
5747 | current_line = 1; | |
5748 | for (lt_index = 0; lt_index < separate_line_info_table_in_use; ) | |
5749 | { | |
5750 | register dw_separate_line_info_ref line_info | |
5751 | = &separate_line_info_table[lt_index]; | |
71dfc51f | 5752 | |
10a11b75 | 5753 | #if 0 |
2f22d404 JM |
5754 | /* Don't emit anything for redundant notes. */ |
5755 | if (line_info->dw_line_num == current_line | |
5756 | && line_info->dw_file_num == current_file | |
5757 | && line_info->function == function) | |
5758 | goto cont; | |
10a11b75 | 5759 | #endif |
2f22d404 | 5760 | |
f19a6894 JW |
5761 | /* Emit debug info for the address of the current line. If this is |
5762 | a new function, or the first line of a function, then we need | |
5763 | to handle it differently. */ | |
5c90448c JM |
5764 | ASM_GENERATE_INTERNAL_LABEL (line_label, SEPARATE_LINE_CODE_LABEL, |
5765 | lt_index); | |
e90b62db JM |
5766 | if (function != line_info->function) |
5767 | { | |
5768 | function = line_info->function; | |
71dfc51f | 5769 | |
e90b62db JM |
5770 | /* Set the address register to the first line in the function */ |
5771 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5772 | if (flag_debug_asm) |
e90b62db JM |
5773 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5774 | ASM_COMMENT_START); | |
71dfc51f | 5775 | |
e90b62db JM |
5776 | fputc ('\n', asm_out_file); |
5777 | output_uleb128 (1 + PTR_SIZE); | |
5778 | fputc ('\n', asm_out_file); | |
5779 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5780 | fputc ('\n', asm_out_file); | |
5781 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5782 | fputc ('\n', asm_out_file); | |
5783 | } | |
5784 | else | |
5785 | { | |
f19a6894 JW |
5786 | /* ??? See the DW_LNS_advance_pc comment above. */ |
5787 | if (0) | |
5788 | { | |
5789 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5790 | if (flag_debug_asm) |
f19a6894 JW |
5791 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5792 | ASM_COMMENT_START); | |
71dfc51f | 5793 | |
f19a6894 JW |
5794 | fputc ('\n', asm_out_file); |
5795 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
5796 | prev_line_label); | |
5797 | fputc ('\n', asm_out_file); | |
5798 | } | |
5799 | else | |
5800 | { | |
5801 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5802 | if (flag_debug_asm) |
f19a6894 JW |
5803 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5804 | ASM_COMMENT_START); | |
5805 | fputc ('\n', asm_out_file); | |
5806 | output_uleb128 (1 + PTR_SIZE); | |
5807 | fputc ('\n', asm_out_file); | |
5808 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5809 | fputc ('\n', asm_out_file); | |
5810 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5811 | fputc ('\n', asm_out_file); | |
5812 | } | |
e90b62db | 5813 | } |
f19a6894 | 5814 | strcpy (prev_line_label, line_label); |
71dfc51f | 5815 | |
f19a6894 JW |
5816 | /* Emit debug info for the source file of the current line, if |
5817 | different from the previous line. */ | |
e90b62db JM |
5818 | if (line_info->dw_file_num != current_file) |
5819 | { | |
5820 | current_file = line_info->dw_file_num; | |
5821 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 5822 | if (flag_debug_asm) |
71dfc51f RK |
5823 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
5824 | ||
e90b62db JM |
5825 | fputc ('\n', asm_out_file); |
5826 | output_uleb128 (current_file); | |
c5cec899 | 5827 | if (flag_debug_asm) |
b2932ae5 | 5828 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 5829 | |
e90b62db JM |
5830 | fputc ('\n', asm_out_file); |
5831 | } | |
71dfc51f | 5832 | |
f19a6894 JW |
5833 | /* Emit debug info for the current line number, choosing the encoding |
5834 | that uses the least amount of space. */ | |
e90b62db JM |
5835 | if (line_info->dw_line_num != current_line) |
5836 | { | |
5837 | line_offset = line_info->dw_line_num - current_line; | |
5838 | line_delta = line_offset - DWARF_LINE_BASE; | |
5839 | current_line = line_info->dw_line_num; | |
5840 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
5841 | { | |
5842 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5843 | DWARF_LINE_OPCODE_BASE + line_delta); | |
c5cec899 | 5844 | if (flag_debug_asm) |
71dfc51f | 5845 | fprintf (asm_out_file, |
2d8b0f3a | 5846 | "\t%s line %ld", ASM_COMMENT_START, current_line); |
71dfc51f | 5847 | |
e90b62db JM |
5848 | fputc ('\n', asm_out_file); |
5849 | } | |
5850 | else | |
5851 | { | |
5852 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
c5cec899 | 5853 | if (flag_debug_asm) |
2d8b0f3a | 5854 | fprintf (asm_out_file, "\t%s advance to line %ld", |
71dfc51f RK |
5855 | ASM_COMMENT_START, current_line); |
5856 | ||
e90b62db JM |
5857 | fputc ('\n', asm_out_file); |
5858 | output_sleb128 (line_offset); | |
5859 | fputc ('\n', asm_out_file); | |
5860 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
2f22d404 JM |
5861 | if (flag_debug_asm) |
5862 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
e90b62db JM |
5863 | fputc ('\n', asm_out_file); |
5864 | } | |
5865 | } | |
2f22d404 JM |
5866 | else |
5867 | { | |
5868 | /* We still need to start a new row, so output a copy insn. */ | |
5869 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
5870 | if (flag_debug_asm) | |
5871 | fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START); | |
5872 | fputc ('\n', asm_out_file); | |
5873 | } | |
71dfc51f | 5874 | |
10a11b75 | 5875 | #if 0 |
2f22d404 | 5876 | cont: |
10a11b75 | 5877 | #endif |
e90b62db | 5878 | ++lt_index; |
e90b62db JM |
5879 | |
5880 | /* If we're done with a function, end its sequence. */ | |
5881 | if (lt_index == separate_line_info_table_in_use | |
5882 | || separate_line_info_table[lt_index].function != function) | |
5883 | { | |
5884 | current_file = 1; | |
5885 | current_line = 1; | |
71dfc51f | 5886 | |
f19a6894 | 5887 | /* Emit debug info for the address of the end of the function. */ |
5c90448c | 5888 | ASM_GENERATE_INTERNAL_LABEL (line_label, FUNC_END_LABEL, function); |
f19a6894 JW |
5889 | if (0) |
5890 | { | |
5891 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5892 | if (flag_debug_asm) |
f19a6894 JW |
5893 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5894 | ASM_COMMENT_START); | |
5895 | ||
5896 | fputc ('\n', asm_out_file); | |
5897 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
5898 | prev_line_label); | |
5899 | fputc ('\n', asm_out_file); | |
5900 | } | |
5901 | else | |
5902 | { | |
5903 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5904 | if (flag_debug_asm) |
f19a6894 JW |
5905 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5906 | ASM_COMMENT_START); | |
5907 | fputc ('\n', asm_out_file); | |
5908 | output_uleb128 (1 + PTR_SIZE); | |
5909 | fputc ('\n', asm_out_file); | |
5910 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5911 | fputc ('\n', asm_out_file); | |
5912 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5913 | fputc ('\n', asm_out_file); | |
5914 | } | |
e90b62db JM |
5915 | |
5916 | /* Output the marker for the end of this sequence. */ | |
5917 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5918 | if (flag_debug_asm) |
e90b62db JM |
5919 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", |
5920 | ASM_COMMENT_START); | |
71dfc51f | 5921 | |
e90b62db JM |
5922 | fputc ('\n', asm_out_file); |
5923 | output_uleb128 (1); | |
5924 | fputc ('\n', asm_out_file); | |
5925 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
5926 | fputc ('\n', asm_out_file); | |
5927 | } | |
5928 | } | |
a3f97cbb JW |
5929 | } |
5930 | \f | |
71dfc51f RK |
5931 | /* Given a pointer to a BLOCK node return non-zero if (and only if) the node |
5932 | in question represents the outermost pair of curly braces (i.e. the "body | |
5933 | block") of a function or method. | |
5934 | ||
5935 | For any BLOCK node representing a "body block" of a function or method, the | |
5936 | BLOCK_SUPERCONTEXT of the node will point to another BLOCK node which | |
5937 | represents the outermost (function) scope for the function or method (i.e. | |
5938 | the one which includes the formal parameters). The BLOCK_SUPERCONTEXT of | |
5939 | *that* node in turn will point to the relevant FUNCTION_DECL node. */ | |
5940 | ||
5941 | static inline int | |
a3f97cbb JW |
5942 | is_body_block (stmt) |
5943 | register tree stmt; | |
5944 | { | |
5945 | if (TREE_CODE (stmt) == BLOCK) | |
5946 | { | |
5947 | register tree parent = BLOCK_SUPERCONTEXT (stmt); | |
5948 | ||
5949 | if (TREE_CODE (parent) == BLOCK) | |
5950 | { | |
5951 | register tree grandparent = BLOCK_SUPERCONTEXT (parent); | |
5952 | ||
5953 | if (TREE_CODE (grandparent) == FUNCTION_DECL) | |
5954 | return 1; | |
5955 | } | |
5956 | } | |
71dfc51f | 5957 | |
a3f97cbb JW |
5958 | return 0; |
5959 | } | |
5960 | ||
a3f97cbb JW |
5961 | /* Given a pointer to a tree node for some base type, return a pointer to |
5962 | a DIE that describes the given type. | |
5963 | ||
5964 | This routine must only be called for GCC type nodes that correspond to | |
5965 | Dwarf base (fundamental) types. */ | |
71dfc51f | 5966 | |
a3f97cbb JW |
5967 | static dw_die_ref |
5968 | base_type_die (type) | |
5969 | register tree type; | |
5970 | { | |
a9d38797 | 5971 | register dw_die_ref base_type_result; |
ec0ce6e2 | 5972 | register const char *type_name; |
a9d38797 | 5973 | register enum dwarf_type encoding; |
71dfc51f | 5974 | register tree name = TYPE_NAME (type); |
a3f97cbb | 5975 | |
a9d38797 JM |
5976 | if (TREE_CODE (type) == ERROR_MARK |
5977 | || TREE_CODE (type) == VOID_TYPE) | |
a3f97cbb JW |
5978 | return 0; |
5979 | ||
405f63da MM |
5980 | if (name) |
5981 | { | |
5982 | if (TREE_CODE (name) == TYPE_DECL) | |
5983 | name = DECL_NAME (name); | |
5984 | ||
5985 | type_name = IDENTIFIER_POINTER (name); | |
5986 | } | |
5987 | else | |
5988 | type_name = "__unknown__"; | |
a9d38797 | 5989 | |
a3f97cbb JW |
5990 | switch (TREE_CODE (type)) |
5991 | { | |
a3f97cbb | 5992 | case INTEGER_TYPE: |
a9d38797 | 5993 | /* Carefully distinguish the C character types, without messing |
a3f97cbb JW |
5994 | up if the language is not C. Note that we check only for the names |
5995 | that contain spaces; other names might occur by coincidence in other | |
5996 | languages. */ | |
a9d38797 JM |
5997 | if (! (TYPE_PRECISION (type) == CHAR_TYPE_SIZE |
5998 | && (type == char_type_node | |
5999 | || ! strcmp (type_name, "signed char") | |
6000 | || ! strcmp (type_name, "unsigned char")))) | |
a3f97cbb | 6001 | { |
a9d38797 JM |
6002 | if (TREE_UNSIGNED (type)) |
6003 | encoding = DW_ATE_unsigned; | |
6004 | else | |
6005 | encoding = DW_ATE_signed; | |
6006 | break; | |
a3f97cbb | 6007 | } |
a9d38797 | 6008 | /* else fall through */ |
a3f97cbb | 6009 | |
a9d38797 JM |
6010 | case CHAR_TYPE: |
6011 | /* GNU Pascal/Ada CHAR type. Not used in C. */ | |
6012 | if (TREE_UNSIGNED (type)) | |
6013 | encoding = DW_ATE_unsigned_char; | |
6014 | else | |
6015 | encoding = DW_ATE_signed_char; | |
a3f97cbb JW |
6016 | break; |
6017 | ||
6018 | case REAL_TYPE: | |
a9d38797 | 6019 | encoding = DW_ATE_float; |
a3f97cbb JW |
6020 | break; |
6021 | ||
405f63da MM |
6022 | /* Dwarf2 doesn't know anything about complex ints, so use |
6023 | a user defined type for it. */ | |
a3f97cbb | 6024 | case COMPLEX_TYPE: |
405f63da MM |
6025 | if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE) |
6026 | encoding = DW_ATE_complex_float; | |
6027 | else | |
6028 | encoding = DW_ATE_lo_user; | |
a3f97cbb JW |
6029 | break; |
6030 | ||
6031 | case BOOLEAN_TYPE: | |
a9d38797 JM |
6032 | /* GNU FORTRAN/Ada/C++ BOOLEAN type. */ |
6033 | encoding = DW_ATE_boolean; | |
a3f97cbb JW |
6034 | break; |
6035 | ||
6036 | default: | |
a9d38797 | 6037 | abort (); /* No other TREE_CODEs are Dwarf fundamental types. */ |
a3f97cbb JW |
6038 | } |
6039 | ||
a9d38797 | 6040 | base_type_result = new_die (DW_TAG_base_type, comp_unit_die); |
14a774a9 RK |
6041 | if (demangle_name_func) |
6042 | type_name = (*demangle_name_func) (type_name); | |
6043 | ||
a9d38797 JM |
6044 | add_AT_string (base_type_result, DW_AT_name, type_name); |
6045 | add_AT_unsigned (base_type_result, DW_AT_byte_size, | |
4e5a8d7b | 6046 | int_size_in_bytes (type)); |
a9d38797 | 6047 | add_AT_unsigned (base_type_result, DW_AT_encoding, encoding); |
a3f97cbb JW |
6048 | |
6049 | return base_type_result; | |
6050 | } | |
6051 | ||
6052 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a pointer to | |
6053 | the Dwarf "root" type for the given input type. The Dwarf "root" type of | |
6054 | a given type is generally the same as the given type, except that if the | |
6055 | given type is a pointer or reference type, then the root type of the given | |
6056 | type is the root type of the "basis" type for the pointer or reference | |
6057 | type. (This definition of the "root" type is recursive.) Also, the root | |
6058 | type of a `const' qualified type or a `volatile' qualified type is the | |
6059 | root type of the given type without the qualifiers. */ | |
71dfc51f | 6060 | |
a3f97cbb JW |
6061 | static tree |
6062 | root_type (type) | |
6063 | register tree type; | |
6064 | { | |
6065 | if (TREE_CODE (type) == ERROR_MARK) | |
6066 | return error_mark_node; | |
6067 | ||
6068 | switch (TREE_CODE (type)) | |
6069 | { | |
6070 | case ERROR_MARK: | |
6071 | return error_mark_node; | |
6072 | ||
6073 | case POINTER_TYPE: | |
6074 | case REFERENCE_TYPE: | |
6075 | return type_main_variant (root_type (TREE_TYPE (type))); | |
6076 | ||
6077 | default: | |
6078 | return type_main_variant (type); | |
6079 | } | |
6080 | } | |
6081 | ||
6082 | /* Given a pointer to an arbitrary ..._TYPE tree node, return non-zero if the | |
6083 | given input type is a Dwarf "fundamental" type. Otherwise return null. */ | |
71dfc51f RK |
6084 | |
6085 | static inline int | |
a3f97cbb JW |
6086 | is_base_type (type) |
6087 | register tree type; | |
6088 | { | |
6089 | switch (TREE_CODE (type)) | |
6090 | { | |
6091 | case ERROR_MARK: | |
6092 | case VOID_TYPE: | |
6093 | case INTEGER_TYPE: | |
6094 | case REAL_TYPE: | |
6095 | case COMPLEX_TYPE: | |
6096 | case BOOLEAN_TYPE: | |
6097 | case CHAR_TYPE: | |
6098 | return 1; | |
6099 | ||
6100 | case SET_TYPE: | |
6101 | case ARRAY_TYPE: | |
6102 | case RECORD_TYPE: | |
6103 | case UNION_TYPE: | |
6104 | case QUAL_UNION_TYPE: | |
6105 | case ENUMERAL_TYPE: | |
6106 | case FUNCTION_TYPE: | |
6107 | case METHOD_TYPE: | |
6108 | case POINTER_TYPE: | |
6109 | case REFERENCE_TYPE: | |
6110 | case FILE_TYPE: | |
6111 | case OFFSET_TYPE: | |
6112 | case LANG_TYPE: | |
6113 | return 0; | |
6114 | ||
6115 | default: | |
6116 | abort (); | |
6117 | } | |
71dfc51f | 6118 | |
a3f97cbb JW |
6119 | return 0; |
6120 | } | |
6121 | ||
6122 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a debugging | |
6123 | entry that chains various modifiers in front of the given type. */ | |
71dfc51f | 6124 | |
a3f97cbb JW |
6125 | static dw_die_ref |
6126 | modified_type_die (type, is_const_type, is_volatile_type, context_die) | |
6127 | register tree type; | |
6128 | register int is_const_type; | |
6129 | register int is_volatile_type; | |
6130 | register dw_die_ref context_die; | |
6131 | { | |
6132 | register enum tree_code code = TREE_CODE (type); | |
6133 | register dw_die_ref mod_type_die = NULL; | |
6134 | register dw_die_ref sub_die = NULL; | |
dfcf9891 | 6135 | register tree item_type = NULL; |
a3f97cbb JW |
6136 | |
6137 | if (code != ERROR_MARK) | |
6138 | { | |
a94dbf2c | 6139 | type = build_type_variant (type, is_const_type, is_volatile_type); |
bdb669cb JM |
6140 | |
6141 | mod_type_die = lookup_type_die (type); | |
6142 | if (mod_type_die) | |
6143 | return mod_type_die; | |
6144 | ||
a94dbf2c JM |
6145 | /* Handle C typedef types. */ |
6146 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
6147 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
6148 | { | |
6149 | tree dtype = TREE_TYPE (TYPE_NAME (type)); | |
6150 | if (type == dtype) | |
6151 | { | |
6152 | /* For a named type, use the typedef. */ | |
6153 | gen_type_die (type, context_die); | |
6154 | mod_type_die = lookup_type_die (type); | |
6155 | } | |
71dfc51f | 6156 | |
a94dbf2c JM |
6157 | else if (is_const_type < TYPE_READONLY (dtype) |
6158 | || is_volatile_type < TYPE_VOLATILE (dtype)) | |
6159 | /* cv-unqualified version of named type. Just use the unnamed | |
6160 | type to which it refers. */ | |
71dfc51f RK |
6161 | mod_type_die |
6162 | = modified_type_die (DECL_ORIGINAL_TYPE (TYPE_NAME (type)), | |
6163 | is_const_type, is_volatile_type, | |
6164 | context_die); | |
6165 | /* Else cv-qualified version of named type; fall through. */ | |
a94dbf2c JM |
6166 | } |
6167 | ||
6168 | if (mod_type_die) | |
6169 | /* OK */; | |
6170 | else if (is_const_type) | |
a3f97cbb | 6171 | { |
ab72d377 | 6172 | mod_type_die = new_die (DW_TAG_const_type, comp_unit_die); |
a9d38797 | 6173 | sub_die = modified_type_die (type, 0, is_volatile_type, context_die); |
a3f97cbb JW |
6174 | } |
6175 | else if (is_volatile_type) | |
6176 | { | |
ab72d377 | 6177 | mod_type_die = new_die (DW_TAG_volatile_type, comp_unit_die); |
a9d38797 | 6178 | sub_die = modified_type_die (type, 0, 0, context_die); |
a3f97cbb JW |
6179 | } |
6180 | else if (code == POINTER_TYPE) | |
6181 | { | |
ab72d377 | 6182 | mod_type_die = new_die (DW_TAG_pointer_type, comp_unit_die); |
a3f97cbb | 6183 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 6184 | #if 0 |
a3f97cbb | 6185 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 6186 | #endif |
a3f97cbb | 6187 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
6188 | } |
6189 | else if (code == REFERENCE_TYPE) | |
6190 | { | |
ab72d377 | 6191 | mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die); |
a3f97cbb | 6192 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 6193 | #if 0 |
a3f97cbb | 6194 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 6195 | #endif |
a3f97cbb | 6196 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
6197 | } |
6198 | else if (is_base_type (type)) | |
71dfc51f | 6199 | mod_type_die = base_type_die (type); |
a3f97cbb JW |
6200 | else |
6201 | { | |
4b674448 JM |
6202 | gen_type_die (type, context_die); |
6203 | ||
a3f97cbb JW |
6204 | /* We have to get the type_main_variant here (and pass that to the |
6205 | `lookup_type_die' routine) because the ..._TYPE node we have | |
6206 | might simply be a *copy* of some original type node (where the | |
6207 | copy was created to help us keep track of typedef names) and | |
6208 | that copy might have a different TYPE_UID from the original | |
a94dbf2c | 6209 | ..._TYPE node. */ |
a3f97cbb | 6210 | mod_type_die = lookup_type_die (type_main_variant (type)); |
3a88cbd1 JL |
6211 | if (mod_type_die == NULL) |
6212 | abort (); | |
a3f97cbb JW |
6213 | } |
6214 | } | |
71dfc51f | 6215 | |
dfcf9891 JW |
6216 | equate_type_number_to_die (type, mod_type_die); |
6217 | if (item_type) | |
71dfc51f RK |
6218 | /* We must do this after the equate_type_number_to_die call, in case |
6219 | this is a recursive type. This ensures that the modified_type_die | |
6220 | recursion will terminate even if the type is recursive. Recursive | |
6221 | types are possible in Ada. */ | |
6222 | sub_die = modified_type_die (item_type, | |
6223 | TYPE_READONLY (item_type), | |
6224 | TYPE_VOLATILE (item_type), | |
6225 | context_die); | |
6226 | ||
a3f97cbb | 6227 | if (sub_die != NULL) |
71dfc51f RK |
6228 | add_AT_die_ref (mod_type_die, DW_AT_type, sub_die); |
6229 | ||
a3f97cbb JW |
6230 | return mod_type_die; |
6231 | } | |
6232 | ||
a3f97cbb JW |
6233 | /* Given a pointer to an arbitrary ..._TYPE tree node, return true if it is |
6234 | an enumerated type. */ | |
71dfc51f RK |
6235 | |
6236 | static inline int | |
a3f97cbb JW |
6237 | type_is_enum (type) |
6238 | register tree type; | |
6239 | { | |
6240 | return TREE_CODE (type) == ENUMERAL_TYPE; | |
6241 | } | |
6242 | ||
a3f97cbb | 6243 | /* Return a location descriptor that designates a machine register. */ |
71dfc51f | 6244 | |
a3f97cbb JW |
6245 | static dw_loc_descr_ref |
6246 | reg_loc_descriptor (rtl) | |
6247 | register rtx rtl; | |
6248 | { | |
6249 | register dw_loc_descr_ref loc_result = NULL; | |
6250 | register unsigned reg = reg_number (rtl); | |
71dfc51f | 6251 | |
85066503 | 6252 | if (reg <= 31) |
71dfc51f | 6253 | loc_result = new_loc_descr (DW_OP_reg0 + reg, 0, 0); |
a3f97cbb | 6254 | else |
71dfc51f RK |
6255 | loc_result = new_loc_descr (DW_OP_regx, reg, 0); |
6256 | ||
a3f97cbb JW |
6257 | return loc_result; |
6258 | } | |
6259 | ||
6260 | /* Return a location descriptor that designates a base+offset location. */ | |
71dfc51f | 6261 | |
a3f97cbb JW |
6262 | static dw_loc_descr_ref |
6263 | based_loc_descr (reg, offset) | |
6264 | unsigned reg; | |
6265 | long int offset; | |
6266 | { | |
6267 | register dw_loc_descr_ref loc_result; | |
810429b7 JM |
6268 | /* For the "frame base", we use the frame pointer or stack pointer |
6269 | registers, since the RTL for local variables is relative to one of | |
6270 | them. */ | |
6271 | register unsigned fp_reg = DBX_REGISTER_NUMBER (frame_pointer_needed | |
b1ccbc24 | 6272 | ? HARD_FRAME_POINTER_REGNUM |
810429b7 | 6273 | : STACK_POINTER_REGNUM); |
71dfc51f | 6274 | |
a3f97cbb | 6275 | if (reg == fp_reg) |
71dfc51f | 6276 | loc_result = new_loc_descr (DW_OP_fbreg, offset, 0); |
85066503 | 6277 | else if (reg <= 31) |
71dfc51f | 6278 | loc_result = new_loc_descr (DW_OP_breg0 + reg, offset, 0); |
a3f97cbb | 6279 | else |
71dfc51f RK |
6280 | loc_result = new_loc_descr (DW_OP_bregx, reg, offset); |
6281 | ||
a3f97cbb JW |
6282 | return loc_result; |
6283 | } | |
6284 | ||
6285 | /* Return true if this RTL expression describes a base+offset calculation. */ | |
71dfc51f RK |
6286 | |
6287 | static inline int | |
a3f97cbb JW |
6288 | is_based_loc (rtl) |
6289 | register rtx rtl; | |
6290 | { | |
71dfc51f RK |
6291 | return (GET_CODE (rtl) == PLUS |
6292 | && ((GET_CODE (XEXP (rtl, 0)) == REG | |
6293 | && GET_CODE (XEXP (rtl, 1)) == CONST_INT))); | |
a3f97cbb JW |
6294 | } |
6295 | ||
6296 | /* The following routine converts the RTL for a variable or parameter | |
6297 | (resident in memory) into an equivalent Dwarf representation of a | |
6298 | mechanism for getting the address of that same variable onto the top of a | |
6299 | hypothetical "address evaluation" stack. | |
71dfc51f | 6300 | |
a3f97cbb JW |
6301 | When creating memory location descriptors, we are effectively transforming |
6302 | the RTL for a memory-resident object into its Dwarf postfix expression | |
6303 | equivalent. This routine recursively descends an RTL tree, turning | |
e60d4d7b JL |
6304 | it into Dwarf postfix code as it goes. |
6305 | ||
6306 | MODE is the mode of the memory reference, needed to handle some | |
6307 | autoincrement addressing modes. */ | |
71dfc51f | 6308 | |
a3f97cbb | 6309 | static dw_loc_descr_ref |
e60d4d7b | 6310 | mem_loc_descriptor (rtl, mode) |
a3f97cbb | 6311 | register rtx rtl; |
e60d4d7b | 6312 | enum machine_mode mode; |
a3f97cbb JW |
6313 | { |
6314 | dw_loc_descr_ref mem_loc_result = NULL; | |
6315 | /* Note that for a dynamically sized array, the location we will generate a | |
6316 | description of here will be the lowest numbered location which is | |
6317 | actually within the array. That's *not* necessarily the same as the | |
6318 | zeroth element of the array. */ | |
71dfc51f | 6319 | |
1865dbb5 JM |
6320 | #ifdef ASM_SIMPLIFY_DWARF_ADDR |
6321 | rtl = ASM_SIMPLIFY_DWARF_ADDR (rtl); | |
6322 | #endif | |
6323 | ||
a3f97cbb JW |
6324 | switch (GET_CODE (rtl)) |
6325 | { | |
e60d4d7b JL |
6326 | case POST_INC: |
6327 | case POST_DEC: | |
6328 | /* POST_INC and POST_DEC can be handled just like a SUBREG. So we | |
6329 | just fall into the SUBREG code. */ | |
6330 | ||
6331 | /* ... fall through ... */ | |
6332 | ||
a3f97cbb JW |
6333 | case SUBREG: |
6334 | /* The case of a subreg may arise when we have a local (register) | |
6335 | variable or a formal (register) parameter which doesn't quite fill | |
6336 | up an entire register. For now, just assume that it is | |
6337 | legitimate to make the Dwarf info refer to the whole register which | |
6338 | contains the given subreg. */ | |
6339 | rtl = XEXP (rtl, 0); | |
71dfc51f RK |
6340 | |
6341 | /* ... fall through ... */ | |
a3f97cbb JW |
6342 | |
6343 | case REG: | |
6344 | /* Whenever a register number forms a part of the description of the | |
6345 | method for calculating the (dynamic) address of a memory resident | |
6346 | object, DWARF rules require the register number be referred to as | |
6347 | a "base register". This distinction is not based in any way upon | |
6348 | what category of register the hardware believes the given register | |
6349 | belongs to. This is strictly DWARF terminology we're dealing with | |
6350 | here. Note that in cases where the location of a memory-resident | |
6351 | data object could be expressed as: OP_ADD (OP_BASEREG (basereg), | |
6352 | OP_CONST (0)) the actual DWARF location descriptor that we generate | |
6353 | may just be OP_BASEREG (basereg). This may look deceptively like | |
6354 | the object in question was allocated to a register (rather than in | |
6355 | memory) so DWARF consumers need to be aware of the subtle | |
6356 | distinction between OP_REG and OP_BASEREG. */ | |
6357 | mem_loc_result = based_loc_descr (reg_number (rtl), 0); | |
6358 | break; | |
6359 | ||
6360 | case MEM: | |
e60d4d7b | 6361 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), mode); |
a3f97cbb JW |
6362 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_deref, 0, 0)); |
6363 | break; | |
6364 | ||
368f4cd6 NC |
6365 | case LABEL_REF: |
6366 | /* Some ports can transform a symbol ref into a label ref, because | |
6367 | the symbol ref is too far away and has to be dumped into a constant | |
6368 | pool. */ | |
a3f97cbb JW |
6369 | case CONST: |
6370 | case SYMBOL_REF: | |
6371 | mem_loc_result = new_loc_descr (DW_OP_addr, 0, 0); | |
6372 | mem_loc_result->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
1865dbb5 | 6373 | mem_loc_result->dw_loc_oprnd1.v.val_addr = save_rtx (rtl); |
a3f97cbb JW |
6374 | break; |
6375 | ||
e60d4d7b JL |
6376 | case PRE_INC: |
6377 | case PRE_DEC: | |
6378 | /* Turn these into a PLUS expression and fall into the PLUS code | |
6379 | below. */ | |
6380 | rtl = gen_rtx_PLUS (word_mode, XEXP (rtl, 0), | |
6381 | GEN_INT (GET_CODE (rtl) == PRE_INC | |
6382 | ? GET_MODE_UNIT_SIZE (mode) | |
6383 | : - GET_MODE_UNIT_SIZE (mode))); | |
6384 | ||
6385 | /* ... fall through ... */ | |
6386 | ||
a3f97cbb JW |
6387 | case PLUS: |
6388 | if (is_based_loc (rtl)) | |
71dfc51f RK |
6389 | mem_loc_result = based_loc_descr (reg_number (XEXP (rtl, 0)), |
6390 | INTVAL (XEXP (rtl, 1))); | |
a3f97cbb JW |
6391 | else |
6392 | { | |
e60d4d7b JL |
6393 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0), |
6394 | mode)); | |
6395 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1), | |
6396 | mode)); | |
a3f97cbb JW |
6397 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_plus, 0, 0)); |
6398 | } | |
6399 | break; | |
6400 | ||
dd2478ae JW |
6401 | case MULT: |
6402 | /* If a pseudo-reg is optimized away, it is possible for it to | |
6403 | be replaced with a MEM containing a multiply. */ | |
e60d4d7b JL |
6404 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0), mode)); |
6405 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1), mode)); | |
dd2478ae JW |
6406 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_mul, 0, 0)); |
6407 | break; | |
6408 | ||
a3f97cbb JW |
6409 | case CONST_INT: |
6410 | mem_loc_result = new_loc_descr (DW_OP_constu, INTVAL (rtl), 0); | |
6411 | break; | |
6412 | ||
6413 | default: | |
6414 | abort (); | |
6415 | } | |
71dfc51f | 6416 | |
a3f97cbb JW |
6417 | return mem_loc_result; |
6418 | } | |
6419 | ||
956d6950 | 6420 | /* Return a descriptor that describes the concatenation of two locations. |
4401bf24 JL |
6421 | This is typically a complex variable. */ |
6422 | ||
6423 | static dw_loc_descr_ref | |
6424 | concat_loc_descriptor (x0, x1) | |
6425 | register rtx x0, x1; | |
6426 | { | |
6427 | dw_loc_descr_ref cc_loc_result = NULL; | |
6428 | ||
6429 | if (!is_pseudo_reg (x0) | |
6430 | && (GET_CODE (x0) != MEM || !is_pseudo_reg (XEXP (x0, 0)))) | |
6431 | add_loc_descr (&cc_loc_result, loc_descriptor (x0)); | |
6432 | add_loc_descr (&cc_loc_result, | |
6433 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x0)), 0)); | |
6434 | ||
6435 | if (!is_pseudo_reg (x1) | |
6436 | && (GET_CODE (x1) != MEM || !is_pseudo_reg (XEXP (x1, 0)))) | |
6437 | add_loc_descr (&cc_loc_result, loc_descriptor (x1)); | |
6438 | add_loc_descr (&cc_loc_result, | |
6439 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x1)), 0)); | |
6440 | ||
6441 | return cc_loc_result; | |
6442 | } | |
6443 | ||
a3f97cbb JW |
6444 | /* Output a proper Dwarf location descriptor for a variable or parameter |
6445 | which is either allocated in a register or in a memory location. For a | |
6446 | register, we just generate an OP_REG and the register number. For a | |
6447 | memory location we provide a Dwarf postfix expression describing how to | |
6448 | generate the (dynamic) address of the object onto the address stack. */ | |
71dfc51f | 6449 | |
a3f97cbb JW |
6450 | static dw_loc_descr_ref |
6451 | loc_descriptor (rtl) | |
6452 | register rtx rtl; | |
6453 | { | |
6454 | dw_loc_descr_ref loc_result = NULL; | |
6455 | switch (GET_CODE (rtl)) | |
6456 | { | |
6457 | case SUBREG: | |
a3f97cbb JW |
6458 | /* The case of a subreg may arise when we have a local (register) |
6459 | variable or a formal (register) parameter which doesn't quite fill | |
71dfc51f | 6460 | up an entire register. For now, just assume that it is |
a3f97cbb JW |
6461 | legitimate to make the Dwarf info refer to the whole register which |
6462 | contains the given subreg. */ | |
a3f97cbb | 6463 | rtl = XEXP (rtl, 0); |
71dfc51f RK |
6464 | |
6465 | /* ... fall through ... */ | |
a3f97cbb JW |
6466 | |
6467 | case REG: | |
5c90448c | 6468 | loc_result = reg_loc_descriptor (rtl); |
a3f97cbb JW |
6469 | break; |
6470 | ||
6471 | case MEM: | |
e60d4d7b | 6472 | loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl)); |
a3f97cbb JW |
6473 | break; |
6474 | ||
4401bf24 JL |
6475 | case CONCAT: |
6476 | loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1)); | |
6477 | break; | |
6478 | ||
a3f97cbb | 6479 | default: |
71dfc51f | 6480 | abort (); |
a3f97cbb | 6481 | } |
71dfc51f | 6482 | |
a3f97cbb JW |
6483 | return loc_result; |
6484 | } | |
6485 | ||
6486 | /* Given an unsigned value, round it up to the lowest multiple of `boundary' | |
6487 | which is not less than the value itself. */ | |
71dfc51f RK |
6488 | |
6489 | static inline unsigned | |
a3f97cbb JW |
6490 | ceiling (value, boundary) |
6491 | register unsigned value; | |
6492 | register unsigned boundary; | |
6493 | { | |
6494 | return (((value + boundary - 1) / boundary) * boundary); | |
6495 | } | |
6496 | ||
6497 | /* Given a pointer to what is assumed to be a FIELD_DECL node, return a | |
6498 | pointer to the declared type for the relevant field variable, or return | |
6499 | `integer_type_node' if the given node turns out to be an | |
6500 | ERROR_MARK node. */ | |
71dfc51f RK |
6501 | |
6502 | static inline tree | |
a3f97cbb JW |
6503 | field_type (decl) |
6504 | register tree decl; | |
6505 | { | |
6506 | register tree type; | |
6507 | ||
6508 | if (TREE_CODE (decl) == ERROR_MARK) | |
6509 | return integer_type_node; | |
6510 | ||
6511 | type = DECL_BIT_FIELD_TYPE (decl); | |
71dfc51f | 6512 | if (type == NULL_TREE) |
a3f97cbb JW |
6513 | type = TREE_TYPE (decl); |
6514 | ||
6515 | return type; | |
6516 | } | |
6517 | ||
6518 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
6519 | node, return the alignment in bits for the type, or else return | |
6520 | BITS_PER_WORD if the node actually turns out to be an | |
6521 | ERROR_MARK node. */ | |
71dfc51f RK |
6522 | |
6523 | static inline unsigned | |
a3f97cbb JW |
6524 | simple_type_align_in_bits (type) |
6525 | register tree type; | |
6526 | { | |
6527 | return (TREE_CODE (type) != ERROR_MARK) ? TYPE_ALIGN (type) : BITS_PER_WORD; | |
6528 | } | |
6529 | ||
6530 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
6531 | node, return the size in bits for the type if it is a constant, or else | |
6532 | return the alignment for the type if the type's size is not constant, or | |
6533 | else return BITS_PER_WORD if the type actually turns out to be an | |
6534 | ERROR_MARK node. */ | |
71dfc51f RK |
6535 | |
6536 | static inline unsigned | |
a3f97cbb JW |
6537 | simple_type_size_in_bits (type) |
6538 | register tree type; | |
6539 | { | |
6540 | if (TREE_CODE (type) == ERROR_MARK) | |
6541 | return BITS_PER_WORD; | |
6542 | else | |
6543 | { | |
6544 | register tree type_size_tree = TYPE_SIZE (type); | |
6545 | ||
6546 | if (TREE_CODE (type_size_tree) != INTEGER_CST) | |
6547 | return TYPE_ALIGN (type); | |
6548 | ||
6549 | return (unsigned) TREE_INT_CST_LOW (type_size_tree); | |
6550 | } | |
6551 | } | |
6552 | ||
6553 | /* Given a pointer to what is assumed to be a FIELD_DECL node, compute and | |
6554 | return the byte offset of the lowest addressed byte of the "containing | |
6555 | object" for the given FIELD_DECL, or return 0 if we are unable to | |
6556 | determine what that offset is, either because the argument turns out to | |
6557 | be a pointer to an ERROR_MARK node, or because the offset is actually | |
6558 | variable. (We can't handle the latter case just yet). */ | |
71dfc51f | 6559 | |
a3f97cbb JW |
6560 | static unsigned |
6561 | field_byte_offset (decl) | |
6562 | register tree decl; | |
6563 | { | |
6564 | register unsigned type_align_in_bytes; | |
6565 | register unsigned type_align_in_bits; | |
6566 | register unsigned type_size_in_bits; | |
6567 | register unsigned object_offset_in_align_units; | |
6568 | register unsigned object_offset_in_bits; | |
6569 | register unsigned object_offset_in_bytes; | |
6570 | register tree type; | |
6571 | register tree bitpos_tree; | |
6572 | register tree field_size_tree; | |
6573 | register unsigned bitpos_int; | |
6574 | register unsigned deepest_bitpos; | |
6575 | register unsigned field_size_in_bits; | |
6576 | ||
6577 | if (TREE_CODE (decl) == ERROR_MARK) | |
6578 | return 0; | |
6579 | ||
6580 | if (TREE_CODE (decl) != FIELD_DECL) | |
6581 | abort (); | |
6582 | ||
6583 | type = field_type (decl); | |
6584 | ||
6585 | bitpos_tree = DECL_FIELD_BITPOS (decl); | |
6586 | field_size_tree = DECL_SIZE (decl); | |
6587 | ||
50352c9c BK |
6588 | /* If there was an error, the size could be zero. */ |
6589 | if (! field_size_tree) | |
6590 | { | |
6591 | if (errorcount) | |
6592 | return 0; | |
6593 | abort (); | |
6594 | } | |
6595 | ||
14a774a9 | 6596 | /* We cannot yet cope with fields whose positions are variable, so |
a3f97cbb JW |
6597 | for now, when we see such things, we simply return 0. Someday, we may |
6598 | be able to handle such cases, but it will be damn difficult. */ | |
6599 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
6600 | return 0; | |
14a774a9 | 6601 | |
a3f97cbb JW |
6602 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); |
6603 | ||
14a774a9 RK |
6604 | /* If we don't know the size of the field, pretend it's a full word. */ |
6605 | if (TREE_CODE (field_size_tree) == INTEGER_CST) | |
6606 | field_size_in_bits = (unsigned) TREE_INT_CST_LOW (field_size_tree); | |
6607 | else | |
6608 | field_size_in_bits = BITS_PER_WORD; | |
a3f97cbb JW |
6609 | |
6610 | type_size_in_bits = simple_type_size_in_bits (type); | |
a3f97cbb JW |
6611 | type_align_in_bits = simple_type_align_in_bits (type); |
6612 | type_align_in_bytes = type_align_in_bits / BITS_PER_UNIT; | |
6613 | ||
6614 | /* Note that the GCC front-end doesn't make any attempt to keep track of | |
6615 | the starting bit offset (relative to the start of the containing | |
6616 | structure type) of the hypothetical "containing object" for a bit- | |
6617 | field. Thus, when computing the byte offset value for the start of the | |
6618 | "containing object" of a bit-field, we must deduce this information on | |
6619 | our own. This can be rather tricky to do in some cases. For example, | |
6620 | handling the following structure type definition when compiling for an | |
6621 | i386/i486 target (which only aligns long long's to 32-bit boundaries) | |
6622 | can be very tricky: | |
6623 | ||
6624 | struct S { int field1; long long field2:31; }; | |
6625 | ||
6626 | Fortunately, there is a simple rule-of-thumb which can be | |
6627 | used in such cases. When compiling for an i386/i486, GCC will allocate | |
6628 | 8 bytes for the structure shown above. It decides to do this based upon | |
6629 | one simple rule for bit-field allocation. Quite simply, GCC allocates | |
6630 | each "containing object" for each bit-field at the first (i.e. lowest | |
6631 | addressed) legitimate alignment boundary (based upon the required | |
6632 | minimum alignment for the declared type of the field) which it can | |
6633 | possibly use, subject to the condition that there is still enough | |
6634 | available space remaining in the containing object (when allocated at | |
6635 | the selected point) to fully accommodate all of the bits of the | |
6636 | bit-field itself. This simple rule makes it obvious why GCC allocates | |
6637 | 8 bytes for each object of the structure type shown above. When looking | |
6638 | for a place to allocate the "containing object" for `field2', the | |
6639 | compiler simply tries to allocate a 64-bit "containing object" at each | |
6640 | successive 32-bit boundary (starting at zero) until it finds a place to | |
6641 | allocate that 64- bit field such that at least 31 contiguous (and | |
6642 | previously unallocated) bits remain within that selected 64 bit field. | |
6643 | (As it turns out, for the example above, the compiler finds that it is | |
6644 | OK to allocate the "containing object" 64-bit field at bit-offset zero | |
6645 | within the structure type.) Here we attempt to work backwards from the | |
6646 | limited set of facts we're given, and we try to deduce from those facts, | |
6647 | where GCC must have believed that the containing object started (within | |
6648 | the structure type). The value we deduce is then used (by the callers of | |
6649 | this routine) to generate DW_AT_location and DW_AT_bit_offset attributes | |
6650 | for fields (both bit-fields and, in the case of DW_AT_location, regular | |
6651 | fields as well). */ | |
6652 | ||
6653 | /* Figure out the bit-distance from the start of the structure to the | |
6654 | "deepest" bit of the bit-field. */ | |
6655 | deepest_bitpos = bitpos_int + field_size_in_bits; | |
6656 | ||
6657 | /* This is the tricky part. Use some fancy footwork to deduce where the | |
6658 | lowest addressed bit of the containing object must be. */ | |
6659 | object_offset_in_bits | |
6660 | = ceiling (deepest_bitpos, type_align_in_bits) - type_size_in_bits; | |
6661 | ||
6662 | /* Compute the offset of the containing object in "alignment units". */ | |
6663 | object_offset_in_align_units = object_offset_in_bits / type_align_in_bits; | |
6664 | ||
6665 | /* Compute the offset of the containing object in bytes. */ | |
6666 | object_offset_in_bytes = object_offset_in_align_units * type_align_in_bytes; | |
6667 | ||
6668 | return object_offset_in_bytes; | |
6669 | } | |
a3f97cbb | 6670 | \f |
71dfc51f RK |
6671 | /* The following routines define various Dwarf attributes and any data |
6672 | associated with them. */ | |
a3f97cbb | 6673 | |
ef76d03b | 6674 | /* Add a location description attribute value to a DIE. |
a3f97cbb | 6675 | |
ef76d03b | 6676 | This emits location attributes suitable for whole variables and |
a3f97cbb JW |
6677 | whole parameters. Note that the location attributes for struct fields are |
6678 | generated by the routine `data_member_location_attribute' below. */ | |
71dfc51f | 6679 | |
a3f97cbb | 6680 | static void |
ef76d03b | 6681 | add_AT_location_description (die, attr_kind, rtl) |
a3f97cbb | 6682 | dw_die_ref die; |
ef76d03b | 6683 | enum dwarf_attribute attr_kind; |
a3f97cbb JW |
6684 | register rtx rtl; |
6685 | { | |
a3f97cbb JW |
6686 | /* Handle a special case. If we are about to output a location descriptor |
6687 | for a variable or parameter which has been optimized out of existence, | |
6a7a9f01 | 6688 | don't do that. A variable which has been optimized out |
a3f97cbb JW |
6689 | of existence will have a DECL_RTL value which denotes a pseudo-reg. |
6690 | Currently, in some rare cases, variables can have DECL_RTL values which | |
6691 | look like (MEM (REG pseudo-reg#)). These cases are due to bugs | |
6692 | elsewhere in the compiler. We treat such cases as if the variable(s) in | |
6a7a9f01 | 6693 | question had been optimized out of existence. */ |
a3f97cbb | 6694 | |
6a7a9f01 JM |
6695 | if (is_pseudo_reg (rtl) |
6696 | || (GET_CODE (rtl) == MEM | |
4401bf24 | 6697 | && is_pseudo_reg (XEXP (rtl, 0))) |
bce8fed7 JL |
6698 | /* This can happen for a PARM_DECL with a DECL_INCOMING_RTL which |
6699 | references the internal argument pointer (a pseudo) in a function | |
6700 | where all references to the internal argument pointer were | |
6701 | eliminated via the optimizers. */ | |
6702 | || (GET_CODE (rtl) == MEM | |
6703 | && GET_CODE (XEXP (rtl, 0)) == PLUS | |
6704 | && is_pseudo_reg (XEXP (XEXP (rtl, 0), 0))) | |
4401bf24 JL |
6705 | || (GET_CODE (rtl) == CONCAT |
6706 | && is_pseudo_reg (XEXP (rtl, 0)) | |
6707 | && is_pseudo_reg (XEXP (rtl, 1)))) | |
6a7a9f01 | 6708 | return; |
a3f97cbb | 6709 | |
6a7a9f01 | 6710 | add_AT_loc (die, attr_kind, loc_descriptor (rtl)); |
a3f97cbb JW |
6711 | } |
6712 | ||
6713 | /* Attach the specialized form of location attribute used for data | |
6714 | members of struct and union types. In the special case of a | |
6715 | FIELD_DECL node which represents a bit-field, the "offset" part | |
6716 | of this special location descriptor must indicate the distance | |
6717 | in bytes from the lowest-addressed byte of the containing struct | |
6718 | or union type to the lowest-addressed byte of the "containing | |
6719 | object" for the bit-field. (See the `field_byte_offset' function | |
6720 | above).. For any given bit-field, the "containing object" is a | |
6721 | hypothetical object (of some integral or enum type) within which | |
6722 | the given bit-field lives. The type of this hypothetical | |
6723 | "containing object" is always the same as the declared type of | |
6724 | the individual bit-field itself (for GCC anyway... the DWARF | |
6725 | spec doesn't actually mandate this). Note that it is the size | |
6726 | (in bytes) of the hypothetical "containing object" which will | |
6727 | be given in the DW_AT_byte_size attribute for this bit-field. | |
6728 | (See the `byte_size_attribute' function below.) It is also used | |
6729 | when calculating the value of the DW_AT_bit_offset attribute. | |
6730 | (See the `bit_offset_attribute' function below). */ | |
71dfc51f | 6731 | |
a3f97cbb JW |
6732 | static void |
6733 | add_data_member_location_attribute (die, decl) | |
6734 | register dw_die_ref die; | |
6735 | register tree decl; | |
6736 | { | |
61b32c02 | 6737 | register unsigned long offset; |
a3f97cbb JW |
6738 | register dw_loc_descr_ref loc_descr; |
6739 | register enum dwarf_location_atom op; | |
6740 | ||
61b32c02 JM |
6741 | if (TREE_CODE (decl) == TREE_VEC) |
6742 | offset = TREE_INT_CST_LOW (BINFO_OFFSET (decl)); | |
6743 | else | |
6744 | offset = field_byte_offset (decl); | |
6745 | ||
a3f97cbb JW |
6746 | /* The DWARF2 standard says that we should assume that the structure address |
6747 | is already on the stack, so we can specify a structure field address | |
6748 | by using DW_OP_plus_uconst. */ | |
71dfc51f | 6749 | |
a3f97cbb JW |
6750 | #ifdef MIPS_DEBUGGING_INFO |
6751 | /* ??? The SGI dwarf reader does not handle the DW_OP_plus_uconst operator | |
6752 | correctly. It works only if we leave the offset on the stack. */ | |
6753 | op = DW_OP_constu; | |
6754 | #else | |
6755 | op = DW_OP_plus_uconst; | |
6756 | #endif | |
71dfc51f | 6757 | |
a3f97cbb JW |
6758 | loc_descr = new_loc_descr (op, offset, 0); |
6759 | add_AT_loc (die, DW_AT_data_member_location, loc_descr); | |
6760 | } | |
6761 | ||
6762 | /* Attach an DW_AT_const_value attribute for a variable or a parameter which | |
6763 | does not have a "location" either in memory or in a register. These | |
6764 | things can arise in GNU C when a constant is passed as an actual parameter | |
6765 | to an inlined function. They can also arise in C++ where declared | |
6766 | constants do not necessarily get memory "homes". */ | |
71dfc51f | 6767 | |
a3f97cbb JW |
6768 | static void |
6769 | add_const_value_attribute (die, rtl) | |
6770 | register dw_die_ref die; | |
6771 | register rtx rtl; | |
6772 | { | |
6773 | switch (GET_CODE (rtl)) | |
6774 | { | |
6775 | case CONST_INT: | |
6776 | /* Note that a CONST_INT rtx could represent either an integer or a | |
6777 | floating-point constant. A CONST_INT is used whenever the constant | |
6778 | will fit into a single word. In all such cases, the original mode | |
6779 | of the constant value is wiped out, and the CONST_INT rtx is | |
6780 | assigned VOIDmode. */ | |
6781 | add_AT_unsigned (die, DW_AT_const_value, (unsigned) INTVAL (rtl)); | |
6782 | break; | |
6783 | ||
6784 | case CONST_DOUBLE: | |
6785 | /* Note that a CONST_DOUBLE rtx could represent either an integer or a | |
6786 | floating-point constant. A CONST_DOUBLE is used whenever the | |
6787 | constant requires more than one word in order to be adequately | |
469ac993 JM |
6788 | represented. We output CONST_DOUBLEs as blocks. */ |
6789 | { | |
6790 | register enum machine_mode mode = GET_MODE (rtl); | |
6791 | ||
6792 | if (GET_MODE_CLASS (mode) == MODE_FLOAT) | |
6793 | { | |
71dfc51f RK |
6794 | register unsigned length = GET_MODE_SIZE (mode) / sizeof (long); |
6795 | long array[4]; | |
6796 | REAL_VALUE_TYPE rv; | |
469ac993 | 6797 | |
71dfc51f | 6798 | REAL_VALUE_FROM_CONST_DOUBLE (rv, rtl); |
469ac993 JM |
6799 | switch (mode) |
6800 | { | |
6801 | case SFmode: | |
71dfc51f | 6802 | REAL_VALUE_TO_TARGET_SINGLE (rv, array[0]); |
469ac993 JM |
6803 | break; |
6804 | ||
6805 | case DFmode: | |
71dfc51f | 6806 | REAL_VALUE_TO_TARGET_DOUBLE (rv, array); |
469ac993 JM |
6807 | break; |
6808 | ||
6809 | case XFmode: | |
6810 | case TFmode: | |
71dfc51f | 6811 | REAL_VALUE_TO_TARGET_LONG_DOUBLE (rv, array); |
469ac993 JM |
6812 | break; |
6813 | ||
6814 | default: | |
6815 | abort (); | |
6816 | } | |
6817 | ||
469ac993 JM |
6818 | add_AT_float (die, DW_AT_const_value, length, array); |
6819 | } | |
6820 | else | |
6821 | add_AT_long_long (die, DW_AT_const_value, | |
6822 | CONST_DOUBLE_HIGH (rtl), CONST_DOUBLE_LOW (rtl)); | |
6823 | } | |
a3f97cbb JW |
6824 | break; |
6825 | ||
6826 | case CONST_STRING: | |
6827 | add_AT_string (die, DW_AT_const_value, XSTR (rtl, 0)); | |
6828 | break; | |
6829 | ||
6830 | case SYMBOL_REF: | |
6831 | case LABEL_REF: | |
6832 | case CONST: | |
1865dbb5 | 6833 | add_AT_addr (die, DW_AT_const_value, save_rtx (rtl)); |
a3f97cbb JW |
6834 | break; |
6835 | ||
6836 | case PLUS: | |
6837 | /* In cases where an inlined instance of an inline function is passed | |
6838 | the address of an `auto' variable (which is local to the caller) we | |
6839 | can get a situation where the DECL_RTL of the artificial local | |
6840 | variable (for the inlining) which acts as a stand-in for the | |
6841 | corresponding formal parameter (of the inline function) will look | |
6842 | like (plus:SI (reg:SI FRAME_PTR) (const_int ...)). This is not | |
6843 | exactly a compile-time constant expression, but it isn't the address | |
6844 | of the (artificial) local variable either. Rather, it represents the | |
6845 | *value* which the artificial local variable always has during its | |
6846 | lifetime. We currently have no way to represent such quasi-constant | |
6a7a9f01 | 6847 | values in Dwarf, so for now we just punt and generate nothing. */ |
a3f97cbb JW |
6848 | break; |
6849 | ||
6850 | default: | |
6851 | /* No other kinds of rtx should be possible here. */ | |
6852 | abort (); | |
6853 | } | |
6854 | ||
6855 | } | |
6856 | ||
6857 | /* Generate *either* an DW_AT_location attribute or else an DW_AT_const_value | |
6858 | data attribute for a variable or a parameter. We generate the | |
6859 | DW_AT_const_value attribute only in those cases where the given variable | |
6860 | or parameter does not have a true "location" either in memory or in a | |
6861 | register. This can happen (for example) when a constant is passed as an | |
6862 | actual argument in a call to an inline function. (It's possible that | |
6863 | these things can crop up in other ways also.) Note that one type of | |
6864 | constant value which can be passed into an inlined function is a constant | |
6865 | pointer. This can happen for example if an actual argument in an inlined | |
6866 | function call evaluates to a compile-time constant address. */ | |
71dfc51f | 6867 | |
a3f97cbb JW |
6868 | static void |
6869 | add_location_or_const_value_attribute (die, decl) | |
6870 | register dw_die_ref die; | |
6871 | register tree decl; | |
6872 | { | |
6873 | register rtx rtl; | |
6874 | register tree declared_type; | |
6875 | register tree passed_type; | |
6876 | ||
6877 | if (TREE_CODE (decl) == ERROR_MARK) | |
71dfc51f RK |
6878 | return; |
6879 | ||
6880 | if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL) | |
6881 | abort (); | |
6882 | ||
a3f97cbb JW |
6883 | /* Here we have to decide where we are going to say the parameter "lives" |
6884 | (as far as the debugger is concerned). We only have a couple of | |
6885 | choices. GCC provides us with DECL_RTL and with DECL_INCOMING_RTL. | |
71dfc51f | 6886 | |
a3f97cbb | 6887 | DECL_RTL normally indicates where the parameter lives during most of the |
71dfc51f | 6888 | activation of the function. If optimization is enabled however, this |
a3f97cbb JW |
6889 | could be either NULL or else a pseudo-reg. Both of those cases indicate |
6890 | that the parameter doesn't really live anywhere (as far as the code | |
6891 | generation parts of GCC are concerned) during most of the function's | |
6892 | activation. That will happen (for example) if the parameter is never | |
71dfc51f RK |
6893 | referenced within the function. |
6894 | ||
6895 | We could just generate a location descriptor here for all non-NULL | |
6896 | non-pseudo values of DECL_RTL and ignore all of the rest, but we can be | |
6897 | a little nicer than that if we also consider DECL_INCOMING_RTL in cases | |
6898 | where DECL_RTL is NULL or is a pseudo-reg. | |
6899 | ||
6900 | Note however that we can only get away with using DECL_INCOMING_RTL as | |
6901 | a backup substitute for DECL_RTL in certain limited cases. In cases | |
6902 | where DECL_ARG_TYPE (decl) indicates the same type as TREE_TYPE (decl), | |
6903 | we can be sure that the parameter was passed using the same type as it is | |
6904 | declared to have within the function, and that its DECL_INCOMING_RTL | |
6905 | points us to a place where a value of that type is passed. | |
6906 | ||
6907 | In cases where DECL_ARG_TYPE (decl) and TREE_TYPE (decl) are different, | |
6908 | we cannot (in general) use DECL_INCOMING_RTL as a substitute for DECL_RTL | |
6909 | because in these cases DECL_INCOMING_RTL points us to a value of some | |
6910 | type which is *different* from the type of the parameter itself. Thus, | |
6911 | if we tried to use DECL_INCOMING_RTL to generate a location attribute in | |
6912 | such cases, the debugger would end up (for example) trying to fetch a | |
6913 | `float' from a place which actually contains the first part of a | |
6914 | `double'. That would lead to really incorrect and confusing | |
6915 | output at debug-time. | |
6916 | ||
6917 | So, in general, we *do not* use DECL_INCOMING_RTL as a backup for DECL_RTL | |
6918 | in cases where DECL_ARG_TYPE (decl) != TREE_TYPE (decl). There | |
6919 | are a couple of exceptions however. On little-endian machines we can | |
6920 | get away with using DECL_INCOMING_RTL even when DECL_ARG_TYPE (decl) is | |
6921 | not the same as TREE_TYPE (decl), but only when DECL_ARG_TYPE (decl) is | |
6922 | an integral type that is smaller than TREE_TYPE (decl). These cases arise | |
6923 | when (on a little-endian machine) a non-prototyped function has a | |
6924 | parameter declared to be of type `short' or `char'. In such cases, | |
6925 | TREE_TYPE (decl) will be `short' or `char', DECL_ARG_TYPE (decl) will | |
6926 | be `int', and DECL_INCOMING_RTL will point to the lowest-order byte of the | |
6927 | passed `int' value. If the debugger then uses that address to fetch | |
6928 | a `short' or a `char' (on a little-endian machine) the result will be | |
6929 | the correct data, so we allow for such exceptional cases below. | |
6930 | ||
6931 | Note that our goal here is to describe the place where the given formal | |
6932 | parameter lives during most of the function's activation (i.e. between | |
6933 | the end of the prologue and the start of the epilogue). We'll do that | |
6934 | as best as we can. Note however that if the given formal parameter is | |
6935 | modified sometime during the execution of the function, then a stack | |
6936 | backtrace (at debug-time) will show the function as having been | |
6937 | called with the *new* value rather than the value which was | |
6938 | originally passed in. This happens rarely enough that it is not | |
6939 | a major problem, but it *is* a problem, and I'd like to fix it. | |
6940 | ||
6941 | A future version of dwarf2out.c may generate two additional | |
6942 | attributes for any given DW_TAG_formal_parameter DIE which will | |
6943 | describe the "passed type" and the "passed location" for the | |
6944 | given formal parameter in addition to the attributes we now | |
6945 | generate to indicate the "declared type" and the "active | |
6946 | location" for each parameter. This additional set of attributes | |
6947 | could be used by debuggers for stack backtraces. Separately, note | |
6948 | that sometimes DECL_RTL can be NULL and DECL_INCOMING_RTL can be | |
6949 | NULL also. This happens (for example) for inlined-instances of | |
6950 | inline function formal parameters which are never referenced. | |
6951 | This really shouldn't be happening. All PARM_DECL nodes should | |
6952 | get valid non-NULL DECL_INCOMING_RTL values, but integrate.c | |
6953 | doesn't currently generate these values for inlined instances of | |
6954 | inline function parameters, so when we see such cases, we are | |
956d6950 | 6955 | just out-of-luck for the time being (until integrate.c |
a3f97cbb JW |
6956 | gets fixed). */ |
6957 | ||
6958 | /* Use DECL_RTL as the "location" unless we find something better. */ | |
6959 | rtl = DECL_RTL (decl); | |
6960 | ||
6961 | if (TREE_CODE (decl) == PARM_DECL) | |
6962 | { | |
6963 | if (rtl == NULL_RTX || is_pseudo_reg (rtl)) | |
6964 | { | |
6965 | declared_type = type_main_variant (TREE_TYPE (decl)); | |
6966 | passed_type = type_main_variant (DECL_ARG_TYPE (decl)); | |
a3f97cbb | 6967 | |
71dfc51f | 6968 | /* This decl represents a formal parameter which was optimized out. |
a3f97cbb JW |
6969 | Note that DECL_INCOMING_RTL may be NULL in here, but we handle |
6970 | all* cases where (rtl == NULL_RTX) just below. */ | |
6971 | if (declared_type == passed_type) | |
71dfc51f RK |
6972 | rtl = DECL_INCOMING_RTL (decl); |
6973 | else if (! BYTES_BIG_ENDIAN | |
6974 | && TREE_CODE (declared_type) == INTEGER_TYPE | |
555b6442 HPN |
6975 | && (GET_MODE_SIZE (TYPE_MODE (declared_type)) |
6976 | <= GET_MODE_SIZE (TYPE_MODE (passed_type)))) | |
71dfc51f | 6977 | rtl = DECL_INCOMING_RTL (decl); |
a3f97cbb | 6978 | } |
5a904a61 JW |
6979 | |
6980 | /* If the parm was passed in registers, but lives on the stack, then | |
6981 | make a big endian correction if the mode of the type of the | |
6982 | parameter is not the same as the mode of the rtl. */ | |
6983 | /* ??? This is the same series of checks that are made in dbxout.c before | |
6984 | we reach the big endian correction code there. It isn't clear if all | |
6985 | of these checks are necessary here, but keeping them all is the safe | |
6986 | thing to do. */ | |
6987 | else if (GET_CODE (rtl) == MEM | |
6988 | && XEXP (rtl, 0) != const0_rtx | |
6989 | && ! CONSTANT_P (XEXP (rtl, 0)) | |
6990 | /* Not passed in memory. */ | |
6991 | && GET_CODE (DECL_INCOMING_RTL (decl)) != MEM | |
6992 | /* Not passed by invisible reference. */ | |
6993 | && (GET_CODE (XEXP (rtl, 0)) != REG | |
6994 | || REGNO (XEXP (rtl, 0)) == HARD_FRAME_POINTER_REGNUM | |
6995 | || REGNO (XEXP (rtl, 0)) == STACK_POINTER_REGNUM | |
6996 | #if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM | |
6997 | || REGNO (XEXP (rtl, 0)) == ARG_POINTER_REGNUM | |
6998 | #endif | |
6999 | ) | |
7000 | /* Big endian correction check. */ | |
7001 | && BYTES_BIG_ENDIAN | |
7002 | && TYPE_MODE (TREE_TYPE (decl)) != GET_MODE (rtl) | |
7003 | && (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (decl))) | |
7004 | < UNITS_PER_WORD)) | |
7005 | { | |
7006 | int offset = (UNITS_PER_WORD | |
7007 | - GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (decl)))); | |
7008 | rtl = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (decl)), | |
7009 | plus_constant (XEXP (rtl, 0), offset)); | |
7010 | } | |
a3f97cbb | 7011 | } |
71dfc51f | 7012 | |
61b32c02 JM |
7013 | if (rtl == NULL_RTX) |
7014 | return; | |
7015 | ||
1914f5da | 7016 | rtl = eliminate_regs (rtl, 0, NULL_RTX); |
6a7a9f01 | 7017 | #ifdef LEAF_REG_REMAP |
54ff41b7 | 7018 | if (current_function_uses_only_leaf_regs) |
5f52dcfe | 7019 | leaf_renumber_regs_insn (rtl); |
6a7a9f01 JM |
7020 | #endif |
7021 | ||
a3f97cbb JW |
7022 | switch (GET_CODE (rtl)) |
7023 | { | |
e9a25f70 JL |
7024 | case ADDRESSOF: |
7025 | /* The address of a variable that was optimized away; don't emit | |
7026 | anything. */ | |
7027 | break; | |
7028 | ||
a3f97cbb JW |
7029 | case CONST_INT: |
7030 | case CONST_DOUBLE: | |
7031 | case CONST_STRING: | |
7032 | case SYMBOL_REF: | |
7033 | case LABEL_REF: | |
7034 | case CONST: | |
7035 | case PLUS: | |
7036 | /* DECL_RTL could be (plus (reg ...) (const_int ...)) */ | |
7037 | add_const_value_attribute (die, rtl); | |
7038 | break; | |
7039 | ||
7040 | case MEM: | |
7041 | case REG: | |
7042 | case SUBREG: | |
4401bf24 | 7043 | case CONCAT: |
ef76d03b | 7044 | add_AT_location_description (die, DW_AT_location, rtl); |
a3f97cbb JW |
7045 | break; |
7046 | ||
7047 | default: | |
71dfc51f | 7048 | abort (); |
a3f97cbb JW |
7049 | } |
7050 | } | |
7051 | ||
7052 | /* Generate an DW_AT_name attribute given some string value to be included as | |
7053 | the value of the attribute. */ | |
71dfc51f RK |
7054 | |
7055 | static inline void | |
a3f97cbb JW |
7056 | add_name_attribute (die, name_string) |
7057 | register dw_die_ref die; | |
d560ee52 | 7058 | register const char *name_string; |
a3f97cbb | 7059 | { |
71dfc51f | 7060 | if (name_string != NULL && *name_string != 0) |
14a774a9 RK |
7061 | { |
7062 | if (demangle_name_func) | |
7063 | name_string = (*demangle_name_func) (name_string); | |
7064 | ||
7065 | add_AT_string (die, DW_AT_name, name_string); | |
7066 | } | |
a3f97cbb JW |
7067 | } |
7068 | ||
7069 | /* Given a tree node describing an array bound (either lower or upper) output | |
466446b0 | 7070 | a representation for that bound. */ |
71dfc51f | 7071 | |
a3f97cbb JW |
7072 | static void |
7073 | add_bound_info (subrange_die, bound_attr, bound) | |
7074 | register dw_die_ref subrange_die; | |
7075 | register enum dwarf_attribute bound_attr; | |
7076 | register tree bound; | |
7077 | { | |
a3f97cbb | 7078 | register unsigned bound_value = 0; |
ef76d03b JW |
7079 | |
7080 | /* If this is an Ada unconstrained array type, then don't emit any debug | |
7081 | info because the array bounds are unknown. They are parameterized when | |
7082 | the type is instantiated. */ | |
7083 | if (contains_placeholder_p (bound)) | |
7084 | return; | |
7085 | ||
a3f97cbb JW |
7086 | switch (TREE_CODE (bound)) |
7087 | { | |
7088 | case ERROR_MARK: | |
7089 | return; | |
7090 | ||
7091 | /* All fixed-bounds are represented by INTEGER_CST nodes. */ | |
7092 | case INTEGER_CST: | |
7093 | bound_value = TREE_INT_CST_LOW (bound); | |
141719a8 JM |
7094 | if (bound_attr == DW_AT_lower_bound |
7095 | && ((is_c_family () && bound_value == 0) | |
7096 | || (is_fortran () && bound_value == 1))) | |
7097 | /* use the default */; | |
7098 | else | |
7099 | add_AT_unsigned (subrange_die, bound_attr, bound_value); | |
a3f97cbb JW |
7100 | break; |
7101 | ||
b1ccbc24 | 7102 | case CONVERT_EXPR: |
a3f97cbb | 7103 | case NOP_EXPR: |
b1ccbc24 RK |
7104 | case NON_LVALUE_EXPR: |
7105 | add_bound_info (subrange_die, bound_attr, TREE_OPERAND (bound, 0)); | |
7106 | break; | |
7107 | ||
a3f97cbb JW |
7108 | case SAVE_EXPR: |
7109 | /* If optimization is turned on, the SAVE_EXPRs that describe how to | |
466446b0 JM |
7110 | access the upper bound values may be bogus. If they refer to a |
7111 | register, they may only describe how to get at these values at the | |
7112 | points in the generated code right after they have just been | |
7113 | computed. Worse yet, in the typical case, the upper bound values | |
7114 | will not even *be* computed in the optimized code (though the | |
7115 | number of elements will), so these SAVE_EXPRs are entirely | |
7116 | bogus. In order to compensate for this fact, we check here to see | |
7117 | if optimization is enabled, and if so, we don't add an attribute | |
7118 | for the (unknown and unknowable) upper bound. This should not | |
7119 | cause too much trouble for existing (stupid?) debuggers because | |
7120 | they have to deal with empty upper bounds location descriptions | |
7121 | anyway in order to be able to deal with incomplete array types. | |
7122 | Of course an intelligent debugger (GDB?) should be able to | |
7123 | comprehend that a missing upper bound specification in a array | |
7124 | type used for a storage class `auto' local array variable | |
7125 | indicates that the upper bound is both unknown (at compile- time) | |
7126 | and unknowable (at run-time) due to optimization. | |
7127 | ||
7128 | We assume that a MEM rtx is safe because gcc wouldn't put the | |
7129 | value there unless it was going to be used repeatedly in the | |
7130 | function, i.e. for cleanups. */ | |
7131 | if (! optimize || GET_CODE (SAVE_EXPR_RTL (bound)) == MEM) | |
a3f97cbb | 7132 | { |
466446b0 JM |
7133 | register dw_die_ref ctx = lookup_decl_die (current_function_decl); |
7134 | register dw_die_ref decl_die = new_die (DW_TAG_variable, ctx); | |
f5963e61 JL |
7135 | register rtx loc = SAVE_EXPR_RTL (bound); |
7136 | ||
7137 | /* If the RTL for the SAVE_EXPR is memory, handle the case where | |
7138 | it references an outer function's frame. */ | |
7139 | ||
7140 | if (GET_CODE (loc) == MEM) | |
7141 | { | |
7142 | rtx new_addr = fix_lexical_addr (XEXP (loc, 0), bound); | |
7143 | ||
7144 | if (XEXP (loc, 0) != new_addr) | |
c5c76735 | 7145 | loc = gen_rtx_MEM (GET_MODE (loc), new_addr); |
f5963e61 JL |
7146 | } |
7147 | ||
466446b0 JM |
7148 | add_AT_flag (decl_die, DW_AT_artificial, 1); |
7149 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
f5963e61 | 7150 | add_AT_location_description (decl_die, DW_AT_location, loc); |
466446b0 | 7151 | add_AT_die_ref (subrange_die, bound_attr, decl_die); |
a3f97cbb | 7152 | } |
71dfc51f RK |
7153 | |
7154 | /* Else leave out the attribute. */ | |
a3f97cbb | 7155 | break; |
3f76745e | 7156 | |
ef76d03b JW |
7157 | case MAX_EXPR: |
7158 | case VAR_DECL: | |
c85f7c16 | 7159 | case COMPONENT_REF: |
ef76d03b JW |
7160 | /* ??? These types of bounds can be created by the Ada front end, |
7161 | and it isn't clear how to emit debug info for them. */ | |
7162 | break; | |
7163 | ||
3f76745e JM |
7164 | default: |
7165 | abort (); | |
a3f97cbb JW |
7166 | } |
7167 | } | |
7168 | ||
7169 | /* Note that the block of subscript information for an array type also | |
7170 | includes information about the element type of type given array type. */ | |
71dfc51f | 7171 | |
a3f97cbb JW |
7172 | static void |
7173 | add_subscript_info (type_die, type) | |
7174 | register dw_die_ref type_die; | |
7175 | register tree type; | |
7176 | { | |
081f5e7e | 7177 | #ifndef MIPS_DEBUGGING_INFO |
a3f97cbb | 7178 | register unsigned dimension_number; |
081f5e7e | 7179 | #endif |
a3f97cbb JW |
7180 | register tree lower, upper; |
7181 | register dw_die_ref subrange_die; | |
7182 | ||
7183 | /* The GNU compilers represent multidimensional array types as sequences of | |
7184 | one dimensional array types whose element types are themselves array | |
7185 | types. Here we squish that down, so that each multidimensional array | |
7186 | type gets only one array_type DIE in the Dwarf debugging info. The draft | |
7187 | Dwarf specification say that we are allowed to do this kind of | |
7188 | compression in C (because there is no difference between an array or | |
7189 | arrays and a multidimensional array in C) but for other source languages | |
7190 | (e.g. Ada) we probably shouldn't do this. */ | |
71dfc51f | 7191 | |
a3f97cbb JW |
7192 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
7193 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
7194 | We work around this by disabling this feature. See also | |
7195 | gen_array_type_die. */ | |
7196 | #ifndef MIPS_DEBUGGING_INFO | |
7197 | for (dimension_number = 0; | |
7198 | TREE_CODE (type) == ARRAY_TYPE; | |
7199 | type = TREE_TYPE (type), dimension_number++) | |
7200 | { | |
7201 | #endif | |
7202 | register tree domain = TYPE_DOMAIN (type); | |
7203 | ||
7204 | /* Arrays come in three flavors: Unspecified bounds, fixed bounds, | |
7205 | and (in GNU C only) variable bounds. Handle all three forms | |
7206 | here. */ | |
7207 | subrange_die = new_die (DW_TAG_subrange_type, type_die); | |
7208 | if (domain) | |
7209 | { | |
7210 | /* We have an array type with specified bounds. */ | |
7211 | lower = TYPE_MIN_VALUE (domain); | |
7212 | upper = TYPE_MAX_VALUE (domain); | |
7213 | ||
a9d38797 JM |
7214 | /* define the index type. */ |
7215 | if (TREE_TYPE (domain)) | |
ef76d03b JW |
7216 | { |
7217 | /* ??? This is probably an Ada unnamed subrange type. Ignore the | |
7218 | TREE_TYPE field. We can't emit debug info for this | |
7219 | because it is an unnamed integral type. */ | |
7220 | if (TREE_CODE (domain) == INTEGER_TYPE | |
7221 | && TYPE_NAME (domain) == NULL_TREE | |
7222 | && TREE_CODE (TREE_TYPE (domain)) == INTEGER_TYPE | |
7223 | && TYPE_NAME (TREE_TYPE (domain)) == NULL_TREE) | |
7224 | ; | |
7225 | else | |
7226 | add_type_attribute (subrange_die, TREE_TYPE (domain), 0, 0, | |
7227 | type_die); | |
7228 | } | |
a9d38797 | 7229 | |
e1ee5cdc RH |
7230 | /* ??? If upper is NULL, the array has unspecified length, |
7231 | but it does have a lower bound. This happens with Fortran | |
7232 | dimension arr(N:*) | |
7233 | Since the debugger is definitely going to need to know N | |
7234 | to produce useful results, go ahead and output the lower | |
7235 | bound solo, and hope the debugger can cope. */ | |
7236 | ||
141719a8 | 7237 | add_bound_info (subrange_die, DW_AT_lower_bound, lower); |
e1ee5cdc RH |
7238 | if (upper) |
7239 | add_bound_info (subrange_die, DW_AT_upper_bound, upper); | |
a3f97cbb JW |
7240 | } |
7241 | else | |
71dfc51f | 7242 | /* We have an array type with an unspecified length. The DWARF-2 |
a9d38797 JM |
7243 | spec does not say how to handle this; let's just leave out the |
7244 | bounds. */ | |
2d8b0f3a JL |
7245 | {;} |
7246 | ||
71dfc51f | 7247 | |
a3f97cbb JW |
7248 | #ifndef MIPS_DEBUGGING_INFO |
7249 | } | |
7250 | #endif | |
7251 | } | |
7252 | ||
7253 | static void | |
7254 | add_byte_size_attribute (die, tree_node) | |
7255 | dw_die_ref die; | |
7256 | register tree tree_node; | |
7257 | { | |
7258 | register unsigned size; | |
7259 | ||
7260 | switch (TREE_CODE (tree_node)) | |
7261 | { | |
7262 | case ERROR_MARK: | |
7263 | size = 0; | |
7264 | break; | |
7265 | case ENUMERAL_TYPE: | |
7266 | case RECORD_TYPE: | |
7267 | case UNION_TYPE: | |
7268 | case QUAL_UNION_TYPE: | |
7269 | size = int_size_in_bytes (tree_node); | |
7270 | break; | |
7271 | case FIELD_DECL: | |
7272 | /* For a data member of a struct or union, the DW_AT_byte_size is | |
7273 | generally given as the number of bytes normally allocated for an | |
7274 | object of the *declared* type of the member itself. This is true | |
7275 | even for bit-fields. */ | |
7276 | size = simple_type_size_in_bits (field_type (tree_node)) / BITS_PER_UNIT; | |
7277 | break; | |
7278 | default: | |
7279 | abort (); | |
7280 | } | |
7281 | ||
7282 | /* Note that `size' might be -1 when we get to this point. If it is, that | |
7283 | indicates that the byte size of the entity in question is variable. We | |
7284 | have no good way of expressing this fact in Dwarf at the present time, | |
7285 | so just let the -1 pass on through. */ | |
7286 | ||
7287 | add_AT_unsigned (die, DW_AT_byte_size, size); | |
7288 | } | |
7289 | ||
7290 | /* For a FIELD_DECL node which represents a bit-field, output an attribute | |
7291 | which specifies the distance in bits from the highest order bit of the | |
7292 | "containing object" for the bit-field to the highest order bit of the | |
7293 | bit-field itself. | |
7294 | ||
b2932ae5 JM |
7295 | For any given bit-field, the "containing object" is a hypothetical |
7296 | object (of some integral or enum type) within which the given bit-field | |
7297 | lives. The type of this hypothetical "containing object" is always the | |
7298 | same as the declared type of the individual bit-field itself. The | |
7299 | determination of the exact location of the "containing object" for a | |
7300 | bit-field is rather complicated. It's handled by the | |
7301 | `field_byte_offset' function (above). | |
a3f97cbb JW |
7302 | |
7303 | Note that it is the size (in bytes) of the hypothetical "containing object" | |
7304 | which will be given in the DW_AT_byte_size attribute for this bit-field. | |
7305 | (See `byte_size_attribute' above). */ | |
71dfc51f RK |
7306 | |
7307 | static inline void | |
a3f97cbb JW |
7308 | add_bit_offset_attribute (die, decl) |
7309 | register dw_die_ref die; | |
7310 | register tree decl; | |
7311 | { | |
7312 | register unsigned object_offset_in_bytes = field_byte_offset (decl); | |
7313 | register tree type = DECL_BIT_FIELD_TYPE (decl); | |
7314 | register tree bitpos_tree = DECL_FIELD_BITPOS (decl); | |
7315 | register unsigned bitpos_int; | |
7316 | register unsigned highest_order_object_bit_offset; | |
7317 | register unsigned highest_order_field_bit_offset; | |
7318 | register unsigned bit_offset; | |
7319 | ||
3a88cbd1 JL |
7320 | /* Must be a field and a bit field. */ |
7321 | if (!type | |
7322 | || TREE_CODE (decl) != FIELD_DECL) | |
7323 | abort (); | |
a3f97cbb JW |
7324 | |
7325 | /* We can't yet handle bit-fields whose offsets are variable, so if we | |
7326 | encounter such things, just return without generating any attribute | |
7327 | whatsoever. */ | |
7328 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
71dfc51f RK |
7329 | return; |
7330 | ||
a3f97cbb JW |
7331 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); |
7332 | ||
7333 | /* Note that the bit offset is always the distance (in bits) from the | |
7334 | highest-order bit of the "containing object" to the highest-order bit of | |
7335 | the bit-field itself. Since the "high-order end" of any object or field | |
7336 | is different on big-endian and little-endian machines, the computation | |
7337 | below must take account of these differences. */ | |
7338 | highest_order_object_bit_offset = object_offset_in_bytes * BITS_PER_UNIT; | |
7339 | highest_order_field_bit_offset = bitpos_int; | |
7340 | ||
71dfc51f | 7341 | if (! BYTES_BIG_ENDIAN) |
a3f97cbb JW |
7342 | { |
7343 | highest_order_field_bit_offset | |
7344 | += (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl)); | |
7345 | ||
7346 | highest_order_object_bit_offset += simple_type_size_in_bits (type); | |
7347 | } | |
71dfc51f RK |
7348 | |
7349 | bit_offset | |
7350 | = (! BYTES_BIG_ENDIAN | |
7351 | ? highest_order_object_bit_offset - highest_order_field_bit_offset | |
7352 | : highest_order_field_bit_offset - highest_order_object_bit_offset); | |
a3f97cbb JW |
7353 | |
7354 | add_AT_unsigned (die, DW_AT_bit_offset, bit_offset); | |
7355 | } | |
7356 | ||
7357 | /* For a FIELD_DECL node which represents a bit field, output an attribute | |
7358 | which specifies the length in bits of the given field. */ | |
71dfc51f RK |
7359 | |
7360 | static inline void | |
a3f97cbb JW |
7361 | add_bit_size_attribute (die, decl) |
7362 | register dw_die_ref die; | |
7363 | register tree decl; | |
7364 | { | |
3a88cbd1 JL |
7365 | /* Must be a field and a bit field. */ |
7366 | if (TREE_CODE (decl) != FIELD_DECL | |
7367 | || ! DECL_BIT_FIELD_TYPE (decl)) | |
7368 | abort (); | |
a3f97cbb JW |
7369 | add_AT_unsigned (die, DW_AT_bit_size, |
7370 | (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl))); | |
7371 | } | |
7372 | ||
88dad228 | 7373 | /* If the compiled language is ANSI C, then add a 'prototyped' |
a3f97cbb | 7374 | attribute, if arg types are given for the parameters of a function. */ |
71dfc51f RK |
7375 | |
7376 | static inline void | |
a3f97cbb JW |
7377 | add_prototyped_attribute (die, func_type) |
7378 | register dw_die_ref die; | |
7379 | register tree func_type; | |
7380 | { | |
88dad228 JM |
7381 | if (get_AT_unsigned (comp_unit_die, DW_AT_language) == DW_LANG_C89 |
7382 | && TYPE_ARG_TYPES (func_type) != NULL) | |
7383 | add_AT_flag (die, DW_AT_prototyped, 1); | |
a3f97cbb JW |
7384 | } |
7385 | ||
7386 | ||
7387 | /* Add an 'abstract_origin' attribute below a given DIE. The DIE is found | |
7388 | by looking in either the type declaration or object declaration | |
7389 | equate table. */ | |
71dfc51f RK |
7390 | |
7391 | static inline void | |
a3f97cbb JW |
7392 | add_abstract_origin_attribute (die, origin) |
7393 | register dw_die_ref die; | |
7394 | register tree origin; | |
7395 | { | |
7396 | dw_die_ref origin_die = NULL; | |
bbc6ae08 | 7397 | |
d10b8e05 | 7398 | if (TREE_CODE (origin) != FUNCTION_DECL) |
e40a1c67 JM |
7399 | { |
7400 | /* We may have gotten separated from the block for the inlined | |
7401 | function, if we're in an exception handler or some such; make | |
7402 | sure that the abstract function has been written out. | |
7403 | ||
7404 | Doing this for nested functions is wrong, however; functions are | |
7405 | distinct units, and our context might not even be inline. */ | |
7406 | tree fn = decl_function_context (origin); | |
7407 | if (fn) | |
7408 | gen_abstract_function (fn); | |
7409 | } | |
44db1d9c | 7410 | |
a3f97cbb | 7411 | if (TREE_CODE_CLASS (TREE_CODE (origin)) == 'd') |
71dfc51f | 7412 | origin_die = lookup_decl_die (origin); |
a3f97cbb | 7413 | else if (TREE_CODE_CLASS (TREE_CODE (origin)) == 't') |
71dfc51f RK |
7414 | origin_die = lookup_type_die (origin); |
7415 | ||
bbc6ae08 | 7416 | if (origin_die == NULL) |
1ae8994f | 7417 | abort (); |
bbc6ae08 | 7418 | |
a3f97cbb JW |
7419 | add_AT_die_ref (die, DW_AT_abstract_origin, origin_die); |
7420 | } | |
7421 | ||
bdb669cb JM |
7422 | /* We do not currently support the pure_virtual attribute. */ |
7423 | ||
71dfc51f | 7424 | static inline void |
a3f97cbb JW |
7425 | add_pure_or_virtual_attribute (die, func_decl) |
7426 | register dw_die_ref die; | |
7427 | register tree func_decl; | |
7428 | { | |
a94dbf2c | 7429 | if (DECL_VINDEX (func_decl)) |
a3f97cbb | 7430 | { |
bdb669cb | 7431 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); |
71dfc51f RK |
7432 | add_AT_loc (die, DW_AT_vtable_elem_location, |
7433 | new_loc_descr (DW_OP_constu, | |
7434 | TREE_INT_CST_LOW (DECL_VINDEX (func_decl)), | |
7435 | 0)); | |
7436 | ||
a94dbf2c JM |
7437 | /* GNU extension: Record what type this method came from originally. */ |
7438 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
7439 | add_AT_die_ref (die, DW_AT_containing_type, | |
7440 | lookup_type_die (DECL_CONTEXT (func_decl))); | |
a3f97cbb JW |
7441 | } |
7442 | } | |
7443 | \f | |
b2932ae5 | 7444 | /* Add source coordinate attributes for the given decl. */ |
71dfc51f | 7445 | |
b2932ae5 JM |
7446 | static void |
7447 | add_src_coords_attributes (die, decl) | |
7448 | register dw_die_ref die; | |
7449 | register tree decl; | |
7450 | { | |
7451 | register unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 7452 | |
b2932ae5 JM |
7453 | add_AT_unsigned (die, DW_AT_decl_file, file_index); |
7454 | add_AT_unsigned (die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
7455 | } | |
7456 | ||
a3f97cbb JW |
7457 | /* Add an DW_AT_name attribute and source coordinate attribute for the |
7458 | given decl, but only if it actually has a name. */ | |
71dfc51f | 7459 | |
a3f97cbb JW |
7460 | static void |
7461 | add_name_and_src_coords_attributes (die, decl) | |
7462 | register dw_die_ref die; | |
7463 | register tree decl; | |
7464 | { | |
61b32c02 | 7465 | register tree decl_name; |
71dfc51f | 7466 | |
a1d7ffe3 | 7467 | decl_name = DECL_NAME (decl); |
71dfc51f | 7468 | if (decl_name != NULL && IDENTIFIER_POINTER (decl_name) != NULL) |
a3f97cbb | 7469 | { |
a1d7ffe3 | 7470 | add_name_attribute (die, dwarf2_name (decl, 0)); |
a96c67ec JM |
7471 | if (! DECL_ARTIFICIAL (decl)) |
7472 | add_src_coords_attributes (die, decl); | |
e689ae67 | 7473 | |
a1d7ffe3 JM |
7474 | if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL) |
7475 | && DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl)) | |
7476 | add_AT_string (die, DW_AT_MIPS_linkage_name, | |
7477 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
a3f97cbb JW |
7478 | } |
7479 | } | |
7480 | ||
7481 | /* Push a new declaration scope. */ | |
71dfc51f | 7482 | |
a3f97cbb JW |
7483 | static void |
7484 | push_decl_scope (scope) | |
7485 | tree scope; | |
7486 | { | |
7487 | /* Make room in the decl_scope_table, if necessary. */ | |
7488 | if (decl_scope_table_allocated == decl_scope_depth) | |
7489 | { | |
7490 | decl_scope_table_allocated += DECL_SCOPE_TABLE_INCREMENT; | |
71dfc51f | 7491 | decl_scope_table |
777ad4c2 JM |
7492 | = (tree *) xrealloc (decl_scope_table, |
7493 | decl_scope_table_allocated * sizeof (tree)); | |
a3f97cbb | 7494 | } |
71dfc51f | 7495 | |
777ad4c2 | 7496 | decl_scope_table[decl_scope_depth] = scope; |
e3e7774e | 7497 | decl_scope_depth++; |
a3f97cbb JW |
7498 | } |
7499 | ||
777ad4c2 JM |
7500 | /* Pop a declaration scope. */ |
7501 | static inline void | |
7502 | pop_decl_scope () | |
7503 | { | |
7504 | if (decl_scope_depth <= 0) | |
7505 | abort (); | |
7506 | --decl_scope_depth; | |
7507 | } | |
7508 | ||
7509 | /* Return the DIE for the scope that immediately contains this type. | |
7510 | Non-named types get global scope. Named types nested in other | |
7511 | types get their containing scope if it's open, or global scope | |
7512 | otherwise. All other types (i.e. function-local named types) get | |
7513 | the current active scope. */ | |
71dfc51f | 7514 | |
a3f97cbb | 7515 | static dw_die_ref |
ab72d377 JM |
7516 | scope_die_for (t, context_die) |
7517 | register tree t; | |
a3f97cbb JW |
7518 | register dw_die_ref context_die; |
7519 | { | |
7520 | register dw_die_ref scope_die = NULL; | |
7521 | register tree containing_scope; | |
e3e7774e | 7522 | register int i; |
a3f97cbb | 7523 | |
777ad4c2 JM |
7524 | /* Non-types always go in the current scope. */ |
7525 | if (! TYPE_P (t)) | |
7526 | abort (); | |
7527 | ||
7528 | containing_scope = TYPE_CONTEXT (t); | |
ab72d377 | 7529 | |
2addbe1d JM |
7530 | /* Ignore namespaces for the moment. */ |
7531 | if (containing_scope && TREE_CODE (containing_scope) == NAMESPACE_DECL) | |
7532 | containing_scope = NULL_TREE; | |
7533 | ||
5f2f160c JM |
7534 | /* Ignore function type "scopes" from the C frontend. They mean that |
7535 | a tagged type is local to a parmlist of a function declarator, but | |
7536 | that isn't useful to DWARF. */ | |
7537 | if (containing_scope && TREE_CODE (containing_scope) == FUNCTION_TYPE) | |
7538 | containing_scope = NULL_TREE; | |
7539 | ||
71dfc51f RK |
7540 | if (containing_scope == NULL_TREE) |
7541 | scope_die = comp_unit_die; | |
777ad4c2 | 7542 | else if (TYPE_P (containing_scope)) |
348bb3c7 | 7543 | { |
777ad4c2 JM |
7544 | /* For types, we can just look up the appropriate DIE. But |
7545 | first we check to see if we're in the middle of emitting it | |
7546 | so we know where the new DIE should go. */ | |
348bb3c7 JM |
7547 | |
7548 | for (i = decl_scope_depth - 1; i >= 0; --i) | |
777ad4c2 | 7549 | if (decl_scope_table[i] == containing_scope) |
348bb3c7 JM |
7550 | break; |
7551 | ||
7552 | if (i < 0) | |
7553 | { | |
348bb3c7 JM |
7554 | if (debug_info_level > DINFO_LEVEL_TERSE |
7555 | && !TREE_ASM_WRITTEN (containing_scope)) | |
7556 | abort (); | |
7557 | ||
7558 | /* If none of the current dies are suitable, we get file scope. */ | |
7559 | scope_die = comp_unit_die; | |
7560 | } | |
7561 | else | |
777ad4c2 | 7562 | scope_die = lookup_type_die (containing_scope); |
348bb3c7 | 7563 | } |
a3f97cbb | 7564 | else |
777ad4c2 | 7565 | scope_die = context_die; |
71dfc51f | 7566 | |
a3f97cbb JW |
7567 | return scope_die; |
7568 | } | |
7569 | ||
777ad4c2 JM |
7570 | /* Returns nonzero iff CONTEXT_DIE is internal to a function. */ |
7571 | ||
c6991660 | 7572 | static inline int local_scope_p PARAMS ((dw_die_ref)); |
777ad4c2 JM |
7573 | static inline int |
7574 | local_scope_p (context_die) | |
7575 | dw_die_ref context_die; | |
a3f97cbb | 7576 | { |
777ad4c2 JM |
7577 | for (; context_die; context_die = context_die->die_parent) |
7578 | if (context_die->die_tag == DW_TAG_inlined_subroutine | |
7579 | || context_die->die_tag == DW_TAG_subprogram) | |
7580 | return 1; | |
7581 | return 0; | |
a3f97cbb JW |
7582 | } |
7583 | ||
9765e357 JM |
7584 | /* Returns nonzero iff CONTEXT_DIE is a class. */ |
7585 | ||
c6991660 | 7586 | static inline int class_scope_p PARAMS ((dw_die_ref)); |
9765e357 JM |
7587 | static inline int |
7588 | class_scope_p (context_die) | |
7589 | dw_die_ref context_die; | |
7590 | { | |
7591 | return (context_die | |
7592 | && (context_die->die_tag == DW_TAG_structure_type | |
7593 | || context_die->die_tag == DW_TAG_union_type)); | |
7594 | } | |
7595 | ||
a3f97cbb JW |
7596 | /* Many forms of DIEs require a "type description" attribute. This |
7597 | routine locates the proper "type descriptor" die for the type given | |
7598 | by 'type', and adds an DW_AT_type attribute below the given die. */ | |
71dfc51f | 7599 | |
a3f97cbb JW |
7600 | static void |
7601 | add_type_attribute (object_die, type, decl_const, decl_volatile, context_die) | |
7602 | register dw_die_ref object_die; | |
7603 | register tree type; | |
7604 | register int decl_const; | |
7605 | register int decl_volatile; | |
7606 | register dw_die_ref context_die; | |
7607 | { | |
7608 | register enum tree_code code = TREE_CODE (type); | |
a3f97cbb JW |
7609 | register dw_die_ref type_die = NULL; |
7610 | ||
ef76d03b JW |
7611 | /* ??? If this type is an unnamed subrange type of an integral or |
7612 | floating-point type, use the inner type. This is because we have no | |
7613 | support for unnamed types in base_type_die. This can happen if this is | |
7614 | an Ada subrange type. Correct solution is emit a subrange type die. */ | |
b1ccbc24 RK |
7615 | if ((code == INTEGER_TYPE || code == REAL_TYPE) |
7616 | && TREE_TYPE (type) != 0 && TYPE_NAME (type) == 0) | |
7617 | type = TREE_TYPE (type), code = TREE_CODE (type); | |
7618 | ||
a3f97cbb | 7619 | if (code == ERROR_MARK) |
b1ccbc24 | 7620 | return; |
a3f97cbb JW |
7621 | |
7622 | /* Handle a special case. For functions whose return type is void, we | |
7623 | generate *no* type attribute. (Note that no object may have type | |
7624 | `void', so this only applies to function return types). */ | |
7625 | if (code == VOID_TYPE) | |
b1ccbc24 | 7626 | return; |
a3f97cbb | 7627 | |
a3f97cbb JW |
7628 | type_die = modified_type_die (type, |
7629 | decl_const || TYPE_READONLY (type), | |
7630 | decl_volatile || TYPE_VOLATILE (type), | |
ab72d377 | 7631 | context_die); |
a3f97cbb | 7632 | if (type_die != NULL) |
71dfc51f | 7633 | add_AT_die_ref (object_die, DW_AT_type, type_die); |
a3f97cbb JW |
7634 | } |
7635 | ||
7636 | /* Given a tree pointer to a struct, class, union, or enum type node, return | |
7637 | a pointer to the (string) tag name for the given type, or zero if the type | |
7638 | was declared without a tag. */ | |
71dfc51f | 7639 | |
a3f97cbb JW |
7640 | static char * |
7641 | type_tag (type) | |
7642 | register tree type; | |
7643 | { | |
7644 | register char *name = 0; | |
7645 | ||
7646 | if (TYPE_NAME (type) != 0) | |
7647 | { | |
7648 | register tree t = 0; | |
7649 | ||
7650 | /* Find the IDENTIFIER_NODE for the type name. */ | |
7651 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
7652 | t = TYPE_NAME (type); | |
bdb669cb | 7653 | |
a3f97cbb JW |
7654 | /* The g++ front end makes the TYPE_NAME of *each* tagged type point to |
7655 | a TYPE_DECL node, regardless of whether or not a `typedef' was | |
bdb669cb | 7656 | involved. */ |
a94dbf2c JM |
7657 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
7658 | && ! DECL_IGNORED_P (TYPE_NAME (type))) | |
a3f97cbb | 7659 | t = DECL_NAME (TYPE_NAME (type)); |
bdb669cb | 7660 | |
a3f97cbb JW |
7661 | /* Now get the name as a string, or invent one. */ |
7662 | if (t != 0) | |
a94dbf2c | 7663 | name = IDENTIFIER_POINTER (t); |
a3f97cbb | 7664 | } |
71dfc51f | 7665 | |
a3f97cbb JW |
7666 | return (name == 0 || *name == '\0') ? 0 : name; |
7667 | } | |
7668 | ||
7669 | /* Return the type associated with a data member, make a special check | |
7670 | for bit field types. */ | |
71dfc51f RK |
7671 | |
7672 | static inline tree | |
a3f97cbb JW |
7673 | member_declared_type (member) |
7674 | register tree member; | |
7675 | { | |
71dfc51f RK |
7676 | return (DECL_BIT_FIELD_TYPE (member) |
7677 | ? DECL_BIT_FIELD_TYPE (member) | |
7678 | : TREE_TYPE (member)); | |
a3f97cbb JW |
7679 | } |
7680 | ||
d291dd49 | 7681 | /* Get the decl's label, as described by its RTL. This may be different |
a3f97cbb | 7682 | from the DECL_NAME name used in the source file. */ |
71dfc51f | 7683 | |
487a6e06 | 7684 | #if 0 |
a3f97cbb | 7685 | static char * |
d291dd49 | 7686 | decl_start_label (decl) |
a3f97cbb JW |
7687 | register tree decl; |
7688 | { | |
7689 | rtx x; | |
7690 | char *fnname; | |
7691 | x = DECL_RTL (decl); | |
7692 | if (GET_CODE (x) != MEM) | |
71dfc51f RK |
7693 | abort (); |
7694 | ||
a3f97cbb JW |
7695 | x = XEXP (x, 0); |
7696 | if (GET_CODE (x) != SYMBOL_REF) | |
71dfc51f RK |
7697 | abort (); |
7698 | ||
a3f97cbb JW |
7699 | fnname = XSTR (x, 0); |
7700 | return fnname; | |
7701 | } | |
487a6e06 | 7702 | #endif |
a3f97cbb | 7703 | \f |
956d6950 | 7704 | /* These routines generate the internal representation of the DIE's for |
a3f97cbb | 7705 | the compilation unit. Debugging information is collected by walking |
88dad228 | 7706 | the declaration trees passed in from dwarf2out_decl(). */ |
a3f97cbb JW |
7707 | |
7708 | static void | |
7709 | gen_array_type_die (type, context_die) | |
7710 | register tree type; | |
7711 | register dw_die_ref context_die; | |
7712 | { | |
ab72d377 | 7713 | register dw_die_ref scope_die = scope_die_for (type, context_die); |
a9d38797 | 7714 | register dw_die_ref array_die; |
a3f97cbb | 7715 | register tree element_type; |
bdb669cb | 7716 | |
a9d38797 JM |
7717 | /* ??? The SGI dwarf reader fails for array of array of enum types unless |
7718 | the inner array type comes before the outer array type. Thus we must | |
7719 | call gen_type_die before we call new_die. See below also. */ | |
7720 | #ifdef MIPS_DEBUGGING_INFO | |
7721 | gen_type_die (TREE_TYPE (type), context_die); | |
7722 | #endif | |
7723 | ||
7724 | array_die = new_die (DW_TAG_array_type, scope_die); | |
7725 | ||
a3f97cbb JW |
7726 | #if 0 |
7727 | /* We default the array ordering. SDB will probably do | |
7728 | the right things even if DW_AT_ordering is not present. It's not even | |
7729 | an issue until we start to get into multidimensional arrays anyway. If | |
7730 | SDB is ever caught doing the Wrong Thing for multi-dimensional arrays, | |
7731 | then we'll have to put the DW_AT_ordering attribute back in. (But if | |
7732 | and when we find out that we need to put these in, we will only do so | |
7733 | for multidimensional arrays. */ | |
7734 | add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_row_major); | |
7735 | #endif | |
7736 | ||
a9d38797 | 7737 | #ifdef MIPS_DEBUGGING_INFO |
4edb7b60 JM |
7738 | /* The SGI compilers handle arrays of unknown bound by setting |
7739 | AT_declaration and not emitting any subrange DIEs. */ | |
a9d38797 JM |
7740 | if (! TYPE_DOMAIN (type)) |
7741 | add_AT_unsigned (array_die, DW_AT_declaration, 1); | |
7742 | else | |
7743 | #endif | |
7744 | add_subscript_info (array_die, type); | |
a3f97cbb | 7745 | |
14a774a9 | 7746 | add_name_attribute (array_die, type_tag (type)); |
a3f97cbb JW |
7747 | equate_type_number_to_die (type, array_die); |
7748 | ||
7749 | /* Add representation of the type of the elements of this array type. */ | |
7750 | element_type = TREE_TYPE (type); | |
71dfc51f | 7751 | |
a3f97cbb JW |
7752 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
7753 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
7754 | We work around this by disabling this feature. See also | |
7755 | add_subscript_info. */ | |
7756 | #ifndef MIPS_DEBUGGING_INFO | |
71dfc51f RK |
7757 | while (TREE_CODE (element_type) == ARRAY_TYPE) |
7758 | element_type = TREE_TYPE (element_type); | |
7759 | ||
a3f97cbb | 7760 | gen_type_die (element_type, context_die); |
a9d38797 | 7761 | #endif |
a3f97cbb JW |
7762 | |
7763 | add_type_attribute (array_die, element_type, 0, 0, context_die); | |
7764 | } | |
7765 | ||
7766 | static void | |
7767 | gen_set_type_die (type, context_die) | |
7768 | register tree type; | |
7769 | register dw_die_ref context_die; | |
7770 | { | |
71dfc51f RK |
7771 | register dw_die_ref type_die |
7772 | = new_die (DW_TAG_set_type, scope_die_for (type, context_die)); | |
7773 | ||
a3f97cbb | 7774 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
7775 | add_type_attribute (type_die, TREE_TYPE (type), 0, 0, context_die); |
7776 | } | |
7777 | ||
d6f4ec51 | 7778 | #if 0 |
a3f97cbb JW |
7779 | static void |
7780 | gen_entry_point_die (decl, context_die) | |
7781 | register tree decl; | |
7782 | register dw_die_ref context_die; | |
7783 | { | |
7784 | register tree origin = decl_ultimate_origin (decl); | |
7785 | register dw_die_ref decl_die = new_die (DW_TAG_entry_point, context_die); | |
7786 | if (origin != NULL) | |
71dfc51f | 7787 | add_abstract_origin_attribute (decl_die, origin); |
a3f97cbb JW |
7788 | else |
7789 | { | |
7790 | add_name_and_src_coords_attributes (decl_die, decl); | |
a3f97cbb JW |
7791 | add_type_attribute (decl_die, TREE_TYPE (TREE_TYPE (decl)), |
7792 | 0, 0, context_die); | |
7793 | } | |
71dfc51f | 7794 | |
a3f97cbb | 7795 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 7796 | equate_decl_number_to_die (decl, decl_die); |
a3f97cbb | 7797 | else |
71dfc51f | 7798 | add_AT_lbl_id (decl_die, DW_AT_low_pc, decl_start_label (decl)); |
a3f97cbb | 7799 | } |
d6f4ec51 | 7800 | #endif |
a3f97cbb | 7801 | |
8a8c3656 JM |
7802 | /* Remember a type in the incomplete_types_list. */ |
7803 | ||
7804 | static void | |
7805 | add_incomplete_type (type) | |
7806 | tree type; | |
7807 | { | |
7808 | if (incomplete_types == incomplete_types_allocated) | |
7809 | { | |
7810 | incomplete_types_allocated += INCOMPLETE_TYPES_INCREMENT; | |
7811 | incomplete_types_list | |
7812 | = (tree *) xrealloc (incomplete_types_list, | |
7813 | sizeof (tree) * incomplete_types_allocated); | |
7814 | } | |
7815 | ||
7816 | incomplete_types_list[incomplete_types++] = type; | |
7817 | } | |
7818 | ||
7819 | /* Walk through the list of incomplete types again, trying once more to | |
7820 | emit full debugging info for them. */ | |
7821 | ||
7822 | static void | |
7823 | retry_incomplete_types () | |
7824 | { | |
7825 | register tree type; | |
7826 | ||
7827 | while (incomplete_types) | |
7828 | { | |
7829 | --incomplete_types; | |
7830 | type = incomplete_types_list[incomplete_types]; | |
7831 | gen_type_die (type, comp_unit_die); | |
7832 | } | |
7833 | } | |
7834 | ||
a3f97cbb | 7835 | /* Generate a DIE to represent an inlined instance of an enumeration type. */ |
71dfc51f | 7836 | |
a3f97cbb JW |
7837 | static void |
7838 | gen_inlined_enumeration_type_die (type, context_die) | |
7839 | register tree type; | |
7840 | register dw_die_ref context_die; | |
7841 | { | |
71dfc51f | 7842 | register dw_die_ref type_die = new_die (DW_TAG_enumeration_type, |
777ad4c2 | 7843 | context_die); |
bbc6ae08 NC |
7844 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
7845 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
7846 | add_abstract_origin_attribute (type_die, type); |
7847 | } | |
7848 | ||
7849 | /* Generate a DIE to represent an inlined instance of a structure type. */ | |
71dfc51f | 7850 | |
a3f97cbb JW |
7851 | static void |
7852 | gen_inlined_structure_type_die (type, context_die) | |
7853 | register tree type; | |
7854 | register dw_die_ref context_die; | |
7855 | { | |
777ad4c2 JM |
7856 | register dw_die_ref type_die = new_die (DW_TAG_structure_type, context_die); |
7857 | ||
bbc6ae08 NC |
7858 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
7859 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
7860 | add_abstract_origin_attribute (type_die, type); |
7861 | } | |
7862 | ||
7863 | /* Generate a DIE to represent an inlined instance of a union type. */ | |
71dfc51f | 7864 | |
a3f97cbb JW |
7865 | static void |
7866 | gen_inlined_union_type_die (type, context_die) | |
7867 | register tree type; | |
7868 | register dw_die_ref context_die; | |
7869 | { | |
777ad4c2 JM |
7870 | register dw_die_ref type_die = new_die (DW_TAG_union_type, context_die); |
7871 | ||
bbc6ae08 NC |
7872 | /* We do not check for TREE_ASM_WRITTEN (type) being set, as the type may |
7873 | be incomplete and such types are not marked. */ | |
a3f97cbb JW |
7874 | add_abstract_origin_attribute (type_die, type); |
7875 | } | |
7876 | ||
7877 | /* Generate a DIE to represent an enumeration type. Note that these DIEs | |
7878 | include all of the information about the enumeration values also. Each | |
273dbe67 JM |
7879 | enumerated type name/value is listed as a child of the enumerated type |
7880 | DIE. */ | |
71dfc51f | 7881 | |
a3f97cbb | 7882 | static void |
273dbe67 | 7883 | gen_enumeration_type_die (type, context_die) |
a3f97cbb | 7884 | register tree type; |
a3f97cbb JW |
7885 | register dw_die_ref context_die; |
7886 | { | |
273dbe67 JM |
7887 | register dw_die_ref type_die = lookup_type_die (type); |
7888 | ||
a3f97cbb JW |
7889 | if (type_die == NULL) |
7890 | { | |
7891 | type_die = new_die (DW_TAG_enumeration_type, | |
ab72d377 | 7892 | scope_die_for (type, context_die)); |
a3f97cbb JW |
7893 | equate_type_number_to_die (type, type_die); |
7894 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 7895 | } |
273dbe67 JM |
7896 | else if (! TYPE_SIZE (type)) |
7897 | return; | |
7898 | else | |
7899 | remove_AT (type_die, DW_AT_declaration); | |
7900 | ||
7901 | /* Handle a GNU C/C++ extension, i.e. incomplete enum types. If the | |
7902 | given enum type is incomplete, do not generate the DW_AT_byte_size | |
7903 | attribute or the DW_AT_element_list attribute. */ | |
7904 | if (TYPE_SIZE (type)) | |
a3f97cbb | 7905 | { |
273dbe67 | 7906 | register tree link; |
71dfc51f | 7907 | |
a082c85a | 7908 | TREE_ASM_WRITTEN (type) = 1; |
273dbe67 | 7909 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 7910 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 7911 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 7912 | |
ef76d03b JW |
7913 | /* If the first reference to this type was as the return type of an |
7914 | inline function, then it may not have a parent. Fix this now. */ | |
7915 | if (type_die->die_parent == NULL) | |
7916 | add_child_die (scope_die_for (type, context_die), type_die); | |
7917 | ||
273dbe67 JM |
7918 | for (link = TYPE_FIELDS (type); |
7919 | link != NULL; link = TREE_CHAIN (link)) | |
a3f97cbb | 7920 | { |
273dbe67 | 7921 | register dw_die_ref enum_die = new_die (DW_TAG_enumerator, type_die); |
71dfc51f | 7922 | |
273dbe67 JM |
7923 | add_name_attribute (enum_die, |
7924 | IDENTIFIER_POINTER (TREE_PURPOSE (link))); | |
7925 | add_AT_unsigned (enum_die, DW_AT_const_value, | |
a3f97cbb | 7926 | (unsigned) TREE_INT_CST_LOW (TREE_VALUE (link))); |
a3f97cbb JW |
7927 | } |
7928 | } | |
273dbe67 JM |
7929 | else |
7930 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
7931 | } |
7932 | ||
7933 | ||
7934 | /* Generate a DIE to represent either a real live formal parameter decl or to | |
7935 | represent just the type of some formal parameter position in some function | |
7936 | type. | |
71dfc51f | 7937 | |
a3f97cbb JW |
7938 | Note that this routine is a bit unusual because its argument may be a |
7939 | ..._DECL node (i.e. either a PARM_DECL or perhaps a VAR_DECL which | |
7940 | represents an inlining of some PARM_DECL) or else some sort of a ..._TYPE | |
7941 | node. If it's the former then this function is being called to output a | |
7942 | DIE to represent a formal parameter object (or some inlining thereof). If | |
7943 | it's the latter, then this function is only being called to output a | |
7944 | DW_TAG_formal_parameter DIE to stand as a placeholder for some formal | |
7945 | argument type of some subprogram type. */ | |
71dfc51f | 7946 | |
a94dbf2c | 7947 | static dw_die_ref |
a3f97cbb JW |
7948 | gen_formal_parameter_die (node, context_die) |
7949 | register tree node; | |
7950 | register dw_die_ref context_die; | |
7951 | { | |
71dfc51f RK |
7952 | register dw_die_ref parm_die |
7953 | = new_die (DW_TAG_formal_parameter, context_die); | |
a3f97cbb | 7954 | register tree origin; |
71dfc51f | 7955 | |
a3f97cbb JW |
7956 | switch (TREE_CODE_CLASS (TREE_CODE (node))) |
7957 | { | |
a3f97cbb JW |
7958 | case 'd': |
7959 | origin = decl_ultimate_origin (node); | |
7960 | if (origin != NULL) | |
a94dbf2c | 7961 | add_abstract_origin_attribute (parm_die, origin); |
a3f97cbb JW |
7962 | else |
7963 | { | |
7964 | add_name_and_src_coords_attributes (parm_die, node); | |
7965 | add_type_attribute (parm_die, TREE_TYPE (node), | |
7966 | TREE_READONLY (node), | |
7967 | TREE_THIS_VOLATILE (node), | |
7968 | context_die); | |
bdb669cb JM |
7969 | if (DECL_ARTIFICIAL (node)) |
7970 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb | 7971 | } |
71dfc51f | 7972 | |
141719a8 JM |
7973 | equate_decl_number_to_die (node, parm_die); |
7974 | if (! DECL_ABSTRACT (node)) | |
a94dbf2c | 7975 | add_location_or_const_value_attribute (parm_die, node); |
71dfc51f | 7976 | |
a3f97cbb JW |
7977 | break; |
7978 | ||
a3f97cbb | 7979 | case 't': |
71dfc51f | 7980 | /* We were called with some kind of a ..._TYPE node. */ |
a3f97cbb JW |
7981 | add_type_attribute (parm_die, node, 0, 0, context_die); |
7982 | break; | |
7983 | ||
a3f97cbb JW |
7984 | default: |
7985 | abort (); | |
7986 | } | |
71dfc51f | 7987 | |
a94dbf2c | 7988 | return parm_die; |
a3f97cbb JW |
7989 | } |
7990 | ||
7991 | /* Generate a special type of DIE used as a stand-in for a trailing ellipsis | |
7992 | at the end of an (ANSI prototyped) formal parameters list. */ | |
71dfc51f | 7993 | |
a3f97cbb JW |
7994 | static void |
7995 | gen_unspecified_parameters_die (decl_or_type, context_die) | |
2618f955 | 7996 | register tree decl_or_type ATTRIBUTE_UNUSED; |
a3f97cbb JW |
7997 | register dw_die_ref context_die; |
7998 | { | |
487a6e06 | 7999 | new_die (DW_TAG_unspecified_parameters, context_die); |
a3f97cbb JW |
8000 | } |
8001 | ||
8002 | /* Generate a list of nameless DW_TAG_formal_parameter DIEs (and perhaps a | |
8003 | DW_TAG_unspecified_parameters DIE) to represent the types of the formal | |
8004 | parameters as specified in some function type specification (except for | |
8005 | those which appear as part of a function *definition*). | |
71dfc51f RK |
8006 | |
8007 | Note we must be careful here to output all of the parameter DIEs before* | |
a3f97cbb JW |
8008 | we output any DIEs needed to represent the types of the formal parameters. |
8009 | This keeps svr4 SDB happy because it (incorrectly) thinks that the first | |
8010 | non-parameter DIE it sees ends the formal parameter list. */ | |
71dfc51f | 8011 | |
a3f97cbb JW |
8012 | static void |
8013 | gen_formal_types_die (function_or_method_type, context_die) | |
8014 | register tree function_or_method_type; | |
8015 | register dw_die_ref context_die; | |
8016 | { | |
8017 | register tree link; | |
8018 | register tree formal_type = NULL; | |
8019 | register tree first_parm_type = TYPE_ARG_TYPES (function_or_method_type); | |
8020 | ||
bdb669cb | 8021 | #if 0 |
a3f97cbb JW |
8022 | /* In the case where we are generating a formal types list for a C++ |
8023 | non-static member function type, skip over the first thing on the | |
8024 | TYPE_ARG_TYPES list because it only represents the type of the hidden | |
8025 | `this pointer'. The debugger should be able to figure out (without | |
8026 | being explicitly told) that this non-static member function type takes a | |
8027 | `this pointer' and should be able to figure what the type of that hidden | |
8028 | parameter is from the DW_AT_member attribute of the parent | |
8029 | DW_TAG_subroutine_type DIE. */ | |
8030 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE) | |
8031 | first_parm_type = TREE_CHAIN (first_parm_type); | |
bdb669cb | 8032 | #endif |
a3f97cbb JW |
8033 | |
8034 | /* Make our first pass over the list of formal parameter types and output a | |
8035 | DW_TAG_formal_parameter DIE for each one. */ | |
8036 | for (link = first_parm_type; link; link = TREE_CHAIN (link)) | |
8037 | { | |
a94dbf2c JM |
8038 | register dw_die_ref parm_die; |
8039 | ||
a3f97cbb JW |
8040 | formal_type = TREE_VALUE (link); |
8041 | if (formal_type == void_type_node) | |
8042 | break; | |
8043 | ||
8044 | /* Output a (nameless) DIE to represent the formal parameter itself. */ | |
a94dbf2c JM |
8045 | parm_die = gen_formal_parameter_die (formal_type, context_die); |
8046 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE | |
8047 | && link == first_parm_type) | |
8048 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb JW |
8049 | } |
8050 | ||
8051 | /* If this function type has an ellipsis, add a | |
8052 | DW_TAG_unspecified_parameters DIE to the end of the parameter list. */ | |
8053 | if (formal_type != void_type_node) | |
8054 | gen_unspecified_parameters_die (function_or_method_type, context_die); | |
8055 | ||
8056 | /* Make our second (and final) pass over the list of formal parameter types | |
8057 | and output DIEs to represent those types (as necessary). */ | |
8058 | for (link = TYPE_ARG_TYPES (function_or_method_type); | |
8059 | link; | |
8060 | link = TREE_CHAIN (link)) | |
8061 | { | |
8062 | formal_type = TREE_VALUE (link); | |
8063 | if (formal_type == void_type_node) | |
8064 | break; | |
8065 | ||
b50c02f9 | 8066 | gen_type_die (formal_type, context_die); |
a3f97cbb JW |
8067 | } |
8068 | } | |
8069 | ||
10a11b75 JM |
8070 | /* We want to generate the DIE for TYPE so that we can generate the |
8071 | die for MEMBER, which has been defined; we will need to refer back | |
8072 | to the member declaration nested within TYPE. If we're trying to | |
8073 | generate minimal debug info for TYPE, processing TYPE won't do the | |
8074 | trick; we need to attach the member declaration by hand. */ | |
8075 | ||
8076 | static void | |
8077 | gen_type_die_for_member (type, member, context_die) | |
8078 | tree type, member; | |
8079 | dw_die_ref context_die; | |
8080 | { | |
8081 | gen_type_die (type, context_die); | |
8082 | ||
8083 | /* If we're trying to avoid duplicate debug info, we may not have | |
8084 | emitted the member decl for this function. Emit it now. */ | |
8085 | if (TYPE_DECL_SUPPRESS_DEBUG (TYPE_STUB_DECL (type)) | |
8086 | && ! lookup_decl_die (member)) | |
8087 | { | |
8088 | if (decl_ultimate_origin (member)) | |
8089 | abort (); | |
8090 | ||
8091 | push_decl_scope (type); | |
8092 | if (TREE_CODE (member) == FUNCTION_DECL) | |
8093 | gen_subprogram_die (member, lookup_type_die (type)); | |
8094 | else | |
8095 | gen_variable_die (member, lookup_type_die (type)); | |
8096 | pop_decl_scope (); | |
8097 | } | |
8098 | } | |
8099 | ||
8100 | /* Generate the DWARF2 info for the "abstract" instance | |
8101 | of a function which we may later generate inlined and/or | |
8102 | out-of-line instances of. */ | |
8103 | ||
8104 | static void | |
8105 | gen_abstract_function (decl) | |
8106 | tree decl; | |
8107 | { | |
8108 | register dw_die_ref old_die = lookup_decl_die (decl); | |
777ad4c2 | 8109 | tree save_fn; |
10a11b75 JM |
8110 | |
8111 | if (old_die && get_AT_unsigned (old_die, DW_AT_inline)) | |
8112 | /* We've already generated the abstract instance. */ | |
8113 | return; | |
8114 | ||
777ad4c2 JM |
8115 | save_fn = current_function_decl; |
8116 | current_function_decl = decl; | |
8117 | ||
10a11b75 JM |
8118 | set_decl_abstract_flags (decl, 1); |
8119 | dwarf2out_decl (decl); | |
8120 | set_decl_abstract_flags (decl, 0); | |
777ad4c2 JM |
8121 | |
8122 | current_function_decl = save_fn; | |
10a11b75 JM |
8123 | } |
8124 | ||
a3f97cbb JW |
8125 | /* Generate a DIE to represent a declared function (either file-scope or |
8126 | block-local). */ | |
71dfc51f | 8127 | |
a3f97cbb JW |
8128 | static void |
8129 | gen_subprogram_die (decl, context_die) | |
8130 | register tree decl; | |
8131 | register dw_die_ref context_die; | |
8132 | { | |
8133 | char label_id[MAX_ARTIFICIAL_LABEL_BYTES]; | |
8134 | register tree origin = decl_ultimate_origin (decl); | |
4b674448 | 8135 | register dw_die_ref subr_die; |
b1ccbc24 | 8136 | register rtx fp_reg; |
a3f97cbb JW |
8137 | register tree fn_arg_types; |
8138 | register tree outer_scope; | |
a94dbf2c | 8139 | register dw_die_ref old_die = lookup_decl_die (decl); |
9765e357 JM |
8140 | register int declaration = (current_function_decl != decl |
8141 | || class_scope_p (context_die)); | |
a3f97cbb | 8142 | |
10a11b75 JM |
8143 | /* Note that it is possible to have both DECL_ABSTRACT and `declaration' |
8144 | be true, if we started to generate the abstract instance of an inline, | |
8145 | decided to output its containing class, and proceeded to emit the | |
8146 | declaration of the inline from the member list for the class. In that | |
8147 | case, `declaration' takes priority; we'll get back to the abstract | |
8148 | instance when we're done with the class. */ | |
8149 | ||
a3f97cbb JW |
8150 | if (origin != NULL) |
8151 | { | |
777ad4c2 | 8152 | if (declaration && ! local_scope_p (context_die)) |
10a11b75 JM |
8153 | abort (); |
8154 | ||
4b674448 | 8155 | subr_die = new_die (DW_TAG_subprogram, context_die); |
a3f97cbb JW |
8156 | add_abstract_origin_attribute (subr_die, origin); |
8157 | } | |
4401bf24 JL |
8158 | else if (old_die && DECL_ABSTRACT (decl) |
8159 | && get_AT_unsigned (old_die, DW_AT_inline)) | |
8160 | { | |
8161 | /* This must be a redefinition of an extern inline function. | |
8162 | We can just reuse the old die here. */ | |
8163 | subr_die = old_die; | |
8164 | ||
8165 | /* Clear out the inlined attribute and parm types. */ | |
8166 | remove_AT (subr_die, DW_AT_inline); | |
8167 | remove_children (subr_die); | |
8168 | } | |
bdb669cb JM |
8169 | else if (old_die) |
8170 | { | |
4b674448 JM |
8171 | register unsigned file_index |
8172 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
a94dbf2c | 8173 | |
3a88cbd1 | 8174 | if (get_AT_flag (old_die, DW_AT_declaration) != 1) |
b75ab88b NC |
8175 | { |
8176 | /* ??? This can happen if there is a bug in the program, for | |
8177 | instance, if it has duplicate function definitions. Ideally, | |
8178 | we should detect this case and ignore it. For now, if we have | |
8179 | already reported an error, any error at all, then assume that | |
8180 | we got here because of a input error, not a dwarf2 bug. */ | |
b75ab88b NC |
8181 | if (errorcount) |
8182 | return; | |
8183 | abort (); | |
8184 | } | |
4b674448 JM |
8185 | |
8186 | /* If the definition comes from the same place as the declaration, | |
a94dbf2c JM |
8187 | maybe use the old DIE. We always want the DIE for this function |
8188 | that has the *_pc attributes to be under comp_unit_die so the | |
8189 | debugger can find it. For inlines, that is the concrete instance, | |
8190 | so we can use the old DIE here. For non-inline methods, we want a | |
8191 | specification DIE at toplevel, so we need a new DIE. For local | |
a96c67ec | 8192 | class methods, this doesn't apply; we just use the old DIE. */ |
a94dbf2c JM |
8193 | if ((DECL_ABSTRACT (decl) || old_die->die_parent == comp_unit_die |
8194 | || context_die == NULL) | |
a96c67ec JM |
8195 | && (DECL_ARTIFICIAL (decl) |
8196 | || (get_AT_unsigned (old_die, DW_AT_decl_file) == file_index | |
8197 | && (get_AT_unsigned (old_die, DW_AT_decl_line) | |
8198 | == (unsigned)DECL_SOURCE_LINE (decl))))) | |
bdb669cb | 8199 | { |
4b674448 JM |
8200 | subr_die = old_die; |
8201 | ||
8202 | /* Clear out the declaration attribute and the parm types. */ | |
8203 | remove_AT (subr_die, DW_AT_declaration); | |
8204 | remove_children (subr_die); | |
8205 | } | |
8206 | else | |
8207 | { | |
8208 | subr_die = new_die (DW_TAG_subprogram, context_die); | |
8209 | add_AT_die_ref (subr_die, DW_AT_specification, old_die); | |
bdb669cb JM |
8210 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
8211 | add_AT_unsigned (subr_die, DW_AT_decl_file, file_index); | |
8212 | if (get_AT_unsigned (old_die, DW_AT_decl_line) | |
2618f955 | 8213 | != (unsigned)DECL_SOURCE_LINE (decl)) |
bdb669cb JM |
8214 | add_AT_unsigned |
8215 | (subr_die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
8216 | } | |
8217 | } | |
a3f97cbb JW |
8218 | else |
8219 | { | |
777ad4c2 | 8220 | subr_die = new_die (DW_TAG_subprogram, context_die); |
4edb7b60 | 8221 | |
273dbe67 JM |
8222 | if (TREE_PUBLIC (decl)) |
8223 | add_AT_flag (subr_die, DW_AT_external, 1); | |
71dfc51f | 8224 | |
a3f97cbb | 8225 | add_name_and_src_coords_attributes (subr_die, decl); |
4927276d JM |
8226 | if (debug_info_level > DINFO_LEVEL_TERSE) |
8227 | { | |
8228 | register tree type = TREE_TYPE (decl); | |
71dfc51f | 8229 | |
4927276d JM |
8230 | add_prototyped_attribute (subr_die, type); |
8231 | add_type_attribute (subr_die, TREE_TYPE (type), 0, 0, context_die); | |
8232 | } | |
71dfc51f | 8233 | |
a3f97cbb | 8234 | add_pure_or_virtual_attribute (subr_die, decl); |
273dbe67 JM |
8235 | if (DECL_ARTIFICIAL (decl)) |
8236 | add_AT_flag (subr_die, DW_AT_artificial, 1); | |
a94dbf2c JM |
8237 | if (TREE_PROTECTED (decl)) |
8238 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_protected); | |
8239 | else if (TREE_PRIVATE (decl)) | |
8240 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 8241 | } |
4edb7b60 | 8242 | |
a94dbf2c JM |
8243 | if (declaration) |
8244 | { | |
777ad4c2 JM |
8245 | if (! origin) |
8246 | add_AT_flag (subr_die, DW_AT_declaration, 1); | |
a94dbf2c JM |
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. */ | |
777ad4c2 | 8252 | if (DECL_CONTEXT (decl) || DECL_ABSTRACT (decl)) |
a94dbf2c JM |
8253 | equate_decl_number_to_die (decl, subr_die); |
8254 | } | |
8255 | else if (DECL_ABSTRACT (decl)) | |
a3f97cbb | 8256 | { |
10a11b75 | 8257 | if (DECL_INLINE (decl) && !flag_no_inline) |
61b32c02 | 8258 | { |
10a11b75 JM |
8259 | /* ??? Checking DECL_DEFER_OUTPUT is correct for static |
8260 | inline functions, but not for extern inline functions. | |
8261 | We can't get this completely correct because information | |
8262 | about whether the function was declared inline is not | |
8263 | saved anywhere. */ | |
8264 | if (DECL_DEFER_OUTPUT (decl)) | |
61b32c02 JM |
8265 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_inlined); |
8266 | else | |
10a11b75 | 8267 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_inlined); |
61b32c02 | 8268 | } |
61b32c02 | 8269 | else |
10a11b75 | 8270 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_not_inlined); |
61b32c02 | 8271 | |
a3f97cbb JW |
8272 | equate_decl_number_to_die (decl, subr_die); |
8273 | } | |
8274 | else if (!DECL_EXTERNAL (decl)) | |
8275 | { | |
71dfc51f | 8276 | if (origin == NULL_TREE) |
ba7b35df | 8277 | equate_decl_number_to_die (decl, subr_die); |
71dfc51f | 8278 | |
5c90448c JM |
8279 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_BEGIN_LABEL, |
8280 | current_funcdef_number); | |
7d4440be | 8281 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label_id); |
5c90448c JM |
8282 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_END_LABEL, |
8283 | current_funcdef_number); | |
a3f97cbb JW |
8284 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label_id); |
8285 | ||
d291dd49 JM |
8286 | add_pubname (decl, subr_die); |
8287 | add_arange (decl, subr_die); | |
8288 | ||
a3f97cbb | 8289 | #ifdef MIPS_DEBUGGING_INFO |
a3f97cbb JW |
8290 | /* Add a reference to the FDE for this routine. */ |
8291 | add_AT_fde_ref (subr_die, DW_AT_MIPS_fde, current_funcdef_fde); | |
8292 | #endif | |
8293 | ||
810429b7 JM |
8294 | /* Define the "frame base" location for this routine. We use the |
8295 | frame pointer or stack pointer registers, since the RTL for local | |
8296 | variables is relative to one of them. */ | |
b1ccbc24 RK |
8297 | fp_reg |
8298 | = frame_pointer_needed ? hard_frame_pointer_rtx : stack_pointer_rtx; | |
8299 | add_AT_loc (subr_die, DW_AT_frame_base, reg_loc_descriptor (fp_reg)); | |
a3f97cbb | 8300 | |
ef76d03b JW |
8301 | #if 0 |
8302 | /* ??? This fails for nested inline functions, because context_display | |
8303 | is not part of the state saved/restored for inline functions. */ | |
88dad228 | 8304 | if (current_function_needs_context) |
ef76d03b JW |
8305 | add_AT_location_description (subr_die, DW_AT_static_link, |
8306 | lookup_static_chain (decl)); | |
8307 | #endif | |
a3f97cbb JW |
8308 | } |
8309 | ||
8310 | /* Now output descriptions of the arguments for this function. This gets | |
8311 | (unnecessarily?) complex because of the fact that the DECL_ARGUMENT list | |
8312 | for a FUNCTION_DECL doesn't indicate cases where there was a trailing | |
8313 | `...' at the end of the formal parameter list. In order to find out if | |
8314 | there was a trailing ellipsis or not, we must instead look at the type | |
8315 | associated with the FUNCTION_DECL. This will be a node of type | |
8316 | FUNCTION_TYPE. If the chain of type nodes hanging off of this | |
8317 | FUNCTION_TYPE node ends with a void_type_node then there should *not* be | |
8318 | an ellipsis at the end. */ | |
71dfc51f | 8319 | |
a3f97cbb JW |
8320 | /* In the case where we are describing a mere function declaration, all we |
8321 | need to do here (and all we *can* do here) is to describe the *types* of | |
8322 | its formal parameters. */ | |
4927276d | 8323 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
71dfc51f | 8324 | ; |
4edb7b60 JM |
8325 | else if (declaration) |
8326 | gen_formal_types_die (TREE_TYPE (decl), subr_die); | |
a3f97cbb JW |
8327 | else |
8328 | { | |
8329 | /* Generate DIEs to represent all known formal parameters */ | |
8330 | register tree arg_decls = DECL_ARGUMENTS (decl); | |
8331 | register tree parm; | |
8332 | ||
8333 | /* When generating DIEs, generate the unspecified_parameters DIE | |
8334 | instead if we come across the arg "__builtin_va_alist" */ | |
8335 | for (parm = arg_decls; parm; parm = TREE_CHAIN (parm)) | |
71dfc51f RK |
8336 | if (TREE_CODE (parm) == PARM_DECL) |
8337 | { | |
db3cf6fb MS |
8338 | if (DECL_NAME (parm) |
8339 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
8340 | "__builtin_va_alist")) | |
71dfc51f RK |
8341 | gen_unspecified_parameters_die (parm, subr_die); |
8342 | else | |
8343 | gen_decl_die (parm, subr_die); | |
8344 | } | |
a3f97cbb JW |
8345 | |
8346 | /* Decide whether we need a unspecified_parameters DIE at the end. | |
8347 | There are 2 more cases to do this for: 1) the ansi ... declaration - | |
8348 | this is detectable when the end of the arg list is not a | |
8349 | void_type_node 2) an unprototyped function declaration (not a | |
8350 | definition). This just means that we have no info about the | |
8351 | parameters at all. */ | |
8352 | fn_arg_types = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
71dfc51f | 8353 | if (fn_arg_types != NULL) |
a3f97cbb JW |
8354 | { |
8355 | /* this is the prototyped case, check for ... */ | |
8356 | if (TREE_VALUE (tree_last (fn_arg_types)) != void_type_node) | |
71dfc51f | 8357 | gen_unspecified_parameters_die (decl, subr_die); |
a3f97cbb | 8358 | } |
71dfc51f RK |
8359 | else if (DECL_INITIAL (decl) == NULL_TREE) |
8360 | gen_unspecified_parameters_die (decl, subr_die); | |
a3f97cbb JW |
8361 | } |
8362 | ||
8363 | /* Output Dwarf info for all of the stuff within the body of the function | |
8364 | (if it has one - it may be just a declaration). */ | |
8365 | outer_scope = DECL_INITIAL (decl); | |
8366 | ||
d7248bff JM |
8367 | /* Note that here, `outer_scope' is a pointer to the outermost BLOCK |
8368 | node created to represent a function. This outermost BLOCK actually | |
8369 | represents the outermost binding contour for the function, i.e. the | |
8370 | contour in which the function's formal parameters and labels get | |
8371 | declared. Curiously, it appears that the front end doesn't actually | |
8372 | put the PARM_DECL nodes for the current function onto the BLOCK_VARS | |
8373 | list for this outer scope. (They are strung off of the DECL_ARGUMENTS | |
8374 | list for the function instead.) The BLOCK_VARS list for the | |
8375 | `outer_scope' does provide us with a list of the LABEL_DECL nodes for | |
8376 | the function however, and we output DWARF info for those in | |
8377 | decls_for_scope. Just within the `outer_scope' there will be a BLOCK | |
8378 | node representing the function's outermost pair of curly braces, and | |
8379 | any blocks used for the base and member initializers of a C++ | |
8380 | constructor function. */ | |
4edb7b60 | 8381 | if (! declaration && TREE_CODE (outer_scope) != ERROR_MARK) |
7e23cb16 JM |
8382 | { |
8383 | current_function_has_inlines = 0; | |
8384 | decls_for_scope (outer_scope, subr_die, 0); | |
71dfc51f | 8385 | |
ce61cc73 | 8386 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
7e23cb16 JM |
8387 | if (current_function_has_inlines) |
8388 | { | |
8389 | add_AT_flag (subr_die, DW_AT_MIPS_has_inlines, 1); | |
8390 | if (! comp_unit_has_inlines) | |
8391 | { | |
8392 | add_AT_flag (comp_unit_die, DW_AT_MIPS_has_inlines, 1); | |
8393 | comp_unit_has_inlines = 1; | |
8394 | } | |
8395 | } | |
8396 | #endif | |
8397 | } | |
a3f97cbb JW |
8398 | } |
8399 | ||
8400 | /* Generate a DIE to represent a declared data object. */ | |
71dfc51f | 8401 | |
a3f97cbb JW |
8402 | static void |
8403 | gen_variable_die (decl, context_die) | |
8404 | register tree decl; | |
8405 | register dw_die_ref context_die; | |
8406 | { | |
8407 | register tree origin = decl_ultimate_origin (decl); | |
8408 | register dw_die_ref var_die = new_die (DW_TAG_variable, context_die); | |
71dfc51f | 8409 | |
bdb669cb | 8410 | dw_die_ref old_die = lookup_decl_die (decl); |
9765e357 JM |
8411 | int declaration = (DECL_EXTERNAL (decl) |
8412 | || class_scope_p (context_die)); | |
4edb7b60 | 8413 | |
a3f97cbb | 8414 | if (origin != NULL) |
71dfc51f | 8415 | add_abstract_origin_attribute (var_die, origin); |
f76b8156 JW |
8416 | /* Loop unrolling can create multiple blocks that refer to the same |
8417 | static variable, so we must test for the DW_AT_declaration flag. */ | |
8418 | /* ??? Loop unrolling/reorder_blocks should perhaps be rewritten to | |
8419 | copy decls and set the DECL_ABSTRACT flag on them instead of | |
8420 | sharing them. */ | |
8421 | else if (old_die && TREE_STATIC (decl) | |
8422 | && get_AT_flag (old_die, DW_AT_declaration) == 1) | |
bdb669cb | 8423 | { |
e689ae67 | 8424 | /* This is a definition of a C++ class level static. */ |
bdb669cb JM |
8425 | add_AT_die_ref (var_die, DW_AT_specification, old_die); |
8426 | if (DECL_NAME (decl)) | |
8427 | { | |
8428 | register unsigned file_index | |
8429 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 8430 | |
bdb669cb JM |
8431 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
8432 | add_AT_unsigned (var_die, DW_AT_decl_file, file_index); | |
71dfc51f | 8433 | |
bdb669cb | 8434 | if (get_AT_unsigned (old_die, DW_AT_decl_line) |
2618f955 | 8435 | != (unsigned)DECL_SOURCE_LINE (decl)) |
71dfc51f RK |
8436 | |
8437 | add_AT_unsigned (var_die, DW_AT_decl_line, | |
8438 | DECL_SOURCE_LINE (decl)); | |
bdb669cb JM |
8439 | } |
8440 | } | |
a3f97cbb JW |
8441 | else |
8442 | { | |
8443 | add_name_and_src_coords_attributes (var_die, decl); | |
a3f97cbb JW |
8444 | add_type_attribute (var_die, TREE_TYPE (decl), |
8445 | TREE_READONLY (decl), | |
8446 | TREE_THIS_VOLATILE (decl), context_die); | |
71dfc51f | 8447 | |
273dbe67 JM |
8448 | if (TREE_PUBLIC (decl)) |
8449 | add_AT_flag (var_die, DW_AT_external, 1); | |
71dfc51f | 8450 | |
273dbe67 JM |
8451 | if (DECL_ARTIFICIAL (decl)) |
8452 | add_AT_flag (var_die, DW_AT_artificial, 1); | |
71dfc51f | 8453 | |
a94dbf2c JM |
8454 | if (TREE_PROTECTED (decl)) |
8455 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 8456 | |
a94dbf2c JM |
8457 | else if (TREE_PRIVATE (decl)) |
8458 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 8459 | } |
4edb7b60 JM |
8460 | |
8461 | if (declaration) | |
8462 | add_AT_flag (var_die, DW_AT_declaration, 1); | |
8463 | ||
9765e357 | 8464 | if (class_scope_p (context_die) || DECL_ABSTRACT (decl)) |
4edb7b60 JM |
8465 | equate_decl_number_to_die (decl, var_die); |
8466 | ||
8467 | if (! declaration && ! DECL_ABSTRACT (decl)) | |
a3f97cbb JW |
8468 | { |
8469 | add_location_or_const_value_attribute (var_die, decl); | |
d291dd49 | 8470 | add_pubname (decl, var_die); |
a3f97cbb JW |
8471 | } |
8472 | } | |
8473 | ||
8474 | /* Generate a DIE to represent a label identifier. */ | |
71dfc51f | 8475 | |
a3f97cbb JW |
8476 | static void |
8477 | gen_label_die (decl, context_die) | |
8478 | register tree decl; | |
8479 | register dw_die_ref context_die; | |
8480 | { | |
8481 | register tree origin = decl_ultimate_origin (decl); | |
8482 | register dw_die_ref lbl_die = new_die (DW_TAG_label, context_die); | |
8483 | register rtx insn; | |
8484 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
5c90448c | 8485 | char label2[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 8486 | |
a3f97cbb | 8487 | if (origin != NULL) |
71dfc51f | 8488 | add_abstract_origin_attribute (lbl_die, origin); |
a3f97cbb | 8489 | else |
71dfc51f RK |
8490 | add_name_and_src_coords_attributes (lbl_die, decl); |
8491 | ||
a3f97cbb | 8492 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 8493 | equate_decl_number_to_die (decl, lbl_die); |
a3f97cbb JW |
8494 | else |
8495 | { | |
8496 | insn = DECL_RTL (decl); | |
088e7160 NC |
8497 | |
8498 | /* Deleted labels are programmer specified labels which have been | |
8499 | eliminated because of various optimisations. We still emit them | |
8500 | here so that it is possible to put breakpoints on them. */ | |
8501 | if (GET_CODE (insn) == CODE_LABEL | |
8502 | || ((GET_CODE (insn) == NOTE | |
8503 | && NOTE_LINE_NUMBER (insn) == NOTE_INSN_DELETED_LABEL))) | |
a3f97cbb JW |
8504 | { |
8505 | /* When optimization is enabled (via -O) some parts of the compiler | |
8506 | (e.g. jump.c and cse.c) may try to delete CODE_LABEL insns which | |
8507 | represent source-level labels which were explicitly declared by | |
8508 | the user. This really shouldn't be happening though, so catch | |
8509 | it if it ever does happen. */ | |
8510 | if (INSN_DELETED_P (insn)) | |
71dfc51f RK |
8511 | abort (); |
8512 | ||
5c90448c JM |
8513 | sprintf (label2, INSN_LABEL_FMT, current_funcdef_number); |
8514 | ASM_GENERATE_INTERNAL_LABEL (label, label2, | |
8515 | (unsigned) INSN_UID (insn)); | |
a3f97cbb JW |
8516 | add_AT_lbl_id (lbl_die, DW_AT_low_pc, label); |
8517 | } | |
8518 | } | |
8519 | } | |
8520 | ||
8521 | /* Generate a DIE for a lexical block. */ | |
71dfc51f | 8522 | |
a3f97cbb | 8523 | static void |
d7248bff | 8524 | gen_lexical_block_die (stmt, context_die, depth) |
a3f97cbb JW |
8525 | register tree stmt; |
8526 | register dw_die_ref context_die; | |
d7248bff | 8527 | int depth; |
a3f97cbb JW |
8528 | { |
8529 | register dw_die_ref stmt_die = new_die (DW_TAG_lexical_block, context_die); | |
8530 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f RK |
8531 | |
8532 | if (! BLOCK_ABSTRACT (stmt)) | |
a3f97cbb | 8533 | { |
5c90448c JM |
8534 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
8535 | next_block_number); | |
a3f97cbb | 8536 | add_AT_lbl_id (stmt_die, DW_AT_low_pc, label); |
5c90448c | 8537 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
a3f97cbb JW |
8538 | add_AT_lbl_id (stmt_die, DW_AT_high_pc, label); |
8539 | } | |
71dfc51f | 8540 | |
d7248bff | 8541 | decls_for_scope (stmt, stmt_die, depth); |
a3f97cbb JW |
8542 | } |
8543 | ||
8544 | /* Generate a DIE for an inlined subprogram. */ | |
71dfc51f | 8545 | |
a3f97cbb | 8546 | static void |
d7248bff | 8547 | gen_inlined_subroutine_die (stmt, context_die, depth) |
a3f97cbb JW |
8548 | register tree stmt; |
8549 | register dw_die_ref context_die; | |
d7248bff | 8550 | int depth; |
a3f97cbb | 8551 | { |
71dfc51f | 8552 | if (! BLOCK_ABSTRACT (stmt)) |
a3f97cbb | 8553 | { |
71dfc51f RK |
8554 | register dw_die_ref subr_die |
8555 | = new_die (DW_TAG_inlined_subroutine, context_die); | |
ab72d377 | 8556 | register tree decl = block_ultimate_origin (stmt); |
d7248bff | 8557 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 8558 | |
10a11b75 JM |
8559 | /* Emit info for the abstract instance first, if we haven't yet. */ |
8560 | gen_abstract_function (decl); | |
8561 | ||
ab72d377 | 8562 | add_abstract_origin_attribute (subr_die, decl); |
5c90448c JM |
8563 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
8564 | next_block_number); | |
a3f97cbb | 8565 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label); |
5c90448c | 8566 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
a3f97cbb | 8567 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label); |
d7248bff | 8568 | decls_for_scope (stmt, subr_die, depth); |
7e23cb16 | 8569 | current_function_has_inlines = 1; |
a3f97cbb | 8570 | } |
a3f97cbb JW |
8571 | } |
8572 | ||
8573 | /* Generate a DIE for a field in a record, or structure. */ | |
71dfc51f | 8574 | |
a3f97cbb JW |
8575 | static void |
8576 | gen_field_die (decl, context_die) | |
8577 | register tree decl; | |
8578 | register dw_die_ref context_die; | |
8579 | { | |
8580 | register dw_die_ref decl_die = new_die (DW_TAG_member, context_die); | |
71dfc51f | 8581 | |
a3f97cbb | 8582 | add_name_and_src_coords_attributes (decl_die, decl); |
a3f97cbb JW |
8583 | add_type_attribute (decl_die, member_declared_type (decl), |
8584 | TREE_READONLY (decl), TREE_THIS_VOLATILE (decl), | |
8585 | context_die); | |
71dfc51f | 8586 | |
a3f97cbb JW |
8587 | /* If this is a bit field... */ |
8588 | if (DECL_BIT_FIELD_TYPE (decl)) | |
8589 | { | |
8590 | add_byte_size_attribute (decl_die, decl); | |
8591 | add_bit_size_attribute (decl_die, decl); | |
8592 | add_bit_offset_attribute (decl_die, decl); | |
8593 | } | |
71dfc51f | 8594 | |
a94dbf2c JM |
8595 | if (TREE_CODE (DECL_FIELD_CONTEXT (decl)) != UNION_TYPE) |
8596 | add_data_member_location_attribute (decl_die, decl); | |
71dfc51f | 8597 | |
273dbe67 JM |
8598 | if (DECL_ARTIFICIAL (decl)) |
8599 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
71dfc51f | 8600 | |
a94dbf2c JM |
8601 | if (TREE_PROTECTED (decl)) |
8602 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 8603 | |
a94dbf2c JM |
8604 | else if (TREE_PRIVATE (decl)) |
8605 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb JW |
8606 | } |
8607 | ||
ab72d377 JM |
8608 | #if 0 |
8609 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. | |
8610 | Use modified_type_die instead. | |
a3f97cbb JW |
8611 | We keep this code here just in case these types of DIEs may be needed to |
8612 | represent certain things in other languages (e.g. Pascal) someday. */ | |
8613 | static void | |
8614 | gen_pointer_type_die (type, context_die) | |
8615 | register tree type; | |
8616 | register dw_die_ref context_die; | |
8617 | { | |
71dfc51f RK |
8618 | register dw_die_ref ptr_die |
8619 | = new_die (DW_TAG_pointer_type, scope_die_for (type, context_die)); | |
8620 | ||
a3f97cbb | 8621 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 8622 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 8623 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb JW |
8624 | } |
8625 | ||
ab72d377 JM |
8626 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. |
8627 | Use modified_type_die instead. | |
a3f97cbb JW |
8628 | We keep this code here just in case these types of DIEs may be needed to |
8629 | represent certain things in other languages (e.g. Pascal) someday. */ | |
8630 | static void | |
8631 | gen_reference_type_die (type, context_die) | |
8632 | register tree type; | |
8633 | register dw_die_ref context_die; | |
8634 | { | |
71dfc51f RK |
8635 | register dw_die_ref ref_die |
8636 | = new_die (DW_TAG_reference_type, scope_die_for (type, context_die)); | |
8637 | ||
a3f97cbb | 8638 | equate_type_number_to_die (type, ref_die); |
a3f97cbb | 8639 | add_type_attribute (ref_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 8640 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb | 8641 | } |
ab72d377 | 8642 | #endif |
a3f97cbb JW |
8643 | |
8644 | /* Generate a DIE for a pointer to a member type. */ | |
8645 | static void | |
8646 | gen_ptr_to_mbr_type_die (type, context_die) | |
8647 | register tree type; | |
8648 | register dw_die_ref context_die; | |
8649 | { | |
71dfc51f RK |
8650 | register dw_die_ref ptr_die |
8651 | = new_die (DW_TAG_ptr_to_member_type, scope_die_for (type, context_die)); | |
8652 | ||
a3f97cbb | 8653 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 8654 | add_AT_die_ref (ptr_die, DW_AT_containing_type, |
bdb669cb | 8655 | lookup_type_die (TYPE_OFFSET_BASETYPE (type))); |
a3f97cbb JW |
8656 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
8657 | } | |
8658 | ||
8659 | /* Generate the DIE for the compilation unit. */ | |
71dfc51f | 8660 | |
a96c67ec JM |
8661 | static dw_die_ref |
8662 | gen_compile_unit_die (filename) | |
8663 | register const char *filename; | |
a3f97cbb | 8664 | { |
a96c67ec | 8665 | register dw_die_ref die; |
a3f97cbb | 8666 | char producer[250]; |
a3f97cbb | 8667 | char *wd = getpwd (); |
a96c67ec | 8668 | int language; |
a3f97cbb | 8669 | |
a96c67ec JM |
8670 | die = new_die (DW_TAG_compile_unit, NULL); |
8671 | add_name_attribute (die, filename); | |
bdb669cb | 8672 | |
a96c67ec JM |
8673 | if (wd != NULL && filename[0] != DIR_SEPARATOR) |
8674 | add_AT_string (die, DW_AT_comp_dir, wd); | |
a3f97cbb JW |
8675 | |
8676 | sprintf (producer, "%s %s", language_string, version_string); | |
8677 | ||
8678 | #ifdef MIPS_DEBUGGING_INFO | |
8679 | /* The MIPS/SGI compilers place the 'cc' command line options in the producer | |
8680 | string. The SGI debugger looks for -g, -g1, -g2, or -g3; if they do | |
8681 | not appear in the producer string, the debugger reaches the conclusion | |
8682 | that the object file is stripped and has no debugging information. | |
8683 | To get the MIPS/SGI debugger to believe that there is debugging | |
8684 | information in the object file, we add a -g to the producer string. */ | |
4927276d JM |
8685 | if (debug_info_level > DINFO_LEVEL_TERSE) |
8686 | strcat (producer, " -g"); | |
a3f97cbb JW |
8687 | #endif |
8688 | ||
a96c67ec | 8689 | add_AT_string (die, DW_AT_producer, producer); |
a9d38797 | 8690 | |
a3f97cbb | 8691 | if (strcmp (language_string, "GNU C++") == 0) |
a96c67ec | 8692 | language = DW_LANG_C_plus_plus; |
a3f97cbb | 8693 | else if (strcmp (language_string, "GNU Ada") == 0) |
a96c67ec | 8694 | language = DW_LANG_Ada83; |
a9d38797 | 8695 | else if (strcmp (language_string, "GNU F77") == 0) |
a96c67ec | 8696 | language = DW_LANG_Fortran77; |
bc28c45b | 8697 | else if (strcmp (language_string, "GNU Pascal") == 0) |
a96c67ec | 8698 | language = DW_LANG_Pascal83; |
a3f97cbb | 8699 | else if (flag_traditional) |
a96c67ec | 8700 | language = DW_LANG_C; |
a3f97cbb | 8701 | else |
a96c67ec | 8702 | language = DW_LANG_C89; |
a9d38797 | 8703 | |
a96c67ec JM |
8704 | add_AT_unsigned (die, DW_AT_language, language); |
8705 | ||
8706 | return die; | |
a3f97cbb JW |
8707 | } |
8708 | ||
8709 | /* Generate a DIE for a string type. */ | |
71dfc51f | 8710 | |
a3f97cbb JW |
8711 | static void |
8712 | gen_string_type_die (type, context_die) | |
8713 | register tree type; | |
8714 | register dw_die_ref context_die; | |
8715 | { | |
71dfc51f RK |
8716 | register dw_die_ref type_die |
8717 | = new_die (DW_TAG_string_type, scope_die_for (type, context_die)); | |
8718 | ||
bdb669cb | 8719 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
8720 | |
8721 | /* Fudge the string length attribute for now. */ | |
71dfc51f | 8722 | |
a3f97cbb | 8723 | /* TODO: add string length info. |
71dfc51f | 8724 | string_length_attribute (TYPE_MAX_VALUE (TYPE_DOMAIN (type))); |
a3f97cbb JW |
8725 | bound_representation (upper_bound, 0, 'u'); */ |
8726 | } | |
8727 | ||
61b32c02 | 8728 | /* Generate the DIE for a base class. */ |
71dfc51f | 8729 | |
61b32c02 JM |
8730 | static void |
8731 | gen_inheritance_die (binfo, context_die) | |
8732 | register tree binfo; | |
8733 | register dw_die_ref context_die; | |
8734 | { | |
8735 | dw_die_ref die = new_die (DW_TAG_inheritance, context_die); | |
71dfc51f | 8736 | |
61b32c02 JM |
8737 | add_type_attribute (die, BINFO_TYPE (binfo), 0, 0, context_die); |
8738 | add_data_member_location_attribute (die, binfo); | |
71dfc51f | 8739 | |
61b32c02 JM |
8740 | if (TREE_VIA_VIRTUAL (binfo)) |
8741 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); | |
8742 | if (TREE_VIA_PUBLIC (binfo)) | |
8743 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_public); | |
8744 | else if (TREE_VIA_PROTECTED (binfo)) | |
8745 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_protected); | |
8746 | } | |
8747 | ||
956d6950 | 8748 | /* Generate a DIE for a class member. */ |
71dfc51f | 8749 | |
a3f97cbb JW |
8750 | static void |
8751 | gen_member_die (type, context_die) | |
8752 | register tree type; | |
8753 | register dw_die_ref context_die; | |
8754 | { | |
61b32c02 | 8755 | register tree member; |
10a11b75 | 8756 | dw_die_ref child; |
71dfc51f | 8757 | |
a3f97cbb JW |
8758 | /* If this is not an incomplete type, output descriptions of each of its |
8759 | members. Note that as we output the DIEs necessary to represent the | |
8760 | members of this record or union type, we will also be trying to output | |
8761 | DIEs to represent the *types* of those members. However the `type' | |
8762 | function (above) will specifically avoid generating type DIEs for member | |
8763 | types *within* the list of member DIEs for this (containing) type execpt | |
8764 | for those types (of members) which are explicitly marked as also being | |
8765 | members of this (containing) type themselves. The g++ front- end can | |
8766 | force any given type to be treated as a member of some other | |
8767 | (containing) type by setting the TYPE_CONTEXT of the given (member) type | |
8768 | to point to the TREE node representing the appropriate (containing) | |
8769 | type. */ | |
8770 | ||
61b32c02 JM |
8771 | /* First output info about the base classes. */ |
8772 | if (TYPE_BINFO (type) && TYPE_BINFO_BASETYPES (type)) | |
a3f97cbb | 8773 | { |
61b32c02 JM |
8774 | register tree bases = TYPE_BINFO_BASETYPES (type); |
8775 | register int n_bases = TREE_VEC_LENGTH (bases); | |
8776 | register int i; | |
8777 | ||
8778 | for (i = 0; i < n_bases; i++) | |
8779 | gen_inheritance_die (TREE_VEC_ELT (bases, i), context_die); | |
a3f97cbb JW |
8780 | } |
8781 | ||
61b32c02 JM |
8782 | /* Now output info about the data members and type members. */ |
8783 | for (member = TYPE_FIELDS (type); member; member = TREE_CHAIN (member)) | |
10a11b75 JM |
8784 | { |
8785 | /* If we thought we were generating minimal debug info for TYPE | |
8786 | and then changed our minds, some of the member declarations | |
8787 | may have already been defined. Don't define them again, but | |
8788 | do put them in the right order. */ | |
8789 | ||
8790 | child = lookup_decl_die (member); | |
8791 | if (child) | |
8792 | splice_child_die (context_die, child); | |
8793 | else | |
8794 | gen_decl_die (member, context_die); | |
8795 | } | |
61b32c02 | 8796 | |
a3f97cbb | 8797 | /* Now output info about the function members (if any). */ |
61b32c02 | 8798 | for (member = TYPE_METHODS (type); member; member = TREE_CHAIN (member)) |
10a11b75 JM |
8799 | { |
8800 | child = lookup_decl_die (member); | |
8801 | if (child) | |
8802 | splice_child_die (context_die, child); | |
8803 | else | |
8804 | gen_decl_die (member, context_die); | |
8805 | } | |
a3f97cbb JW |
8806 | } |
8807 | ||
10a11b75 JM |
8808 | /* Generate a DIE for a structure or union type. If TYPE_DECL_SUPPRESS_DEBUG |
8809 | is set, we pretend that the type was never defined, so we only get the | |
8810 | member DIEs needed by later specification DIEs. */ | |
71dfc51f | 8811 | |
a3f97cbb | 8812 | static void |
273dbe67 | 8813 | gen_struct_or_union_type_die (type, context_die) |
a3f97cbb | 8814 | register tree type; |
a3f97cbb JW |
8815 | register dw_die_ref context_die; |
8816 | { | |
273dbe67 | 8817 | register dw_die_ref type_die = lookup_type_die (type); |
a082c85a JM |
8818 | register dw_die_ref scope_die = 0; |
8819 | register int nested = 0; | |
10a11b75 | 8820 | int complete = (TYPE_SIZE (type) |
65e1263a JW |
8821 | && (! TYPE_STUB_DECL (type) |
8822 | || ! TYPE_DECL_SUPPRESS_DEBUG (TYPE_STUB_DECL (type)))); | |
273dbe67 | 8823 | |
10a11b75 | 8824 | if (type_die && ! complete) |
273dbe67 | 8825 | return; |
a082c85a | 8826 | |
71dfc51f | 8827 | if (TYPE_CONTEXT (type) != NULL_TREE |
5f2f160c | 8828 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type))) |
a082c85a JM |
8829 | nested = 1; |
8830 | ||
a94dbf2c | 8831 | scope_die = scope_die_for (type, context_die); |
a082c85a JM |
8832 | |
8833 | if (! type_die || (nested && scope_die == comp_unit_die)) | |
273dbe67 | 8834 | /* First occurrence of type or toplevel definition of nested class. */ |
a3f97cbb | 8835 | { |
273dbe67 | 8836 | register dw_die_ref old_die = type_die; |
71dfc51f | 8837 | |
a3f97cbb JW |
8838 | type_die = new_die (TREE_CODE (type) == RECORD_TYPE |
8839 | ? DW_TAG_structure_type : DW_TAG_union_type, | |
a082c85a | 8840 | scope_die); |
a3f97cbb JW |
8841 | equate_type_number_to_die (type, type_die); |
8842 | add_name_attribute (type_die, type_tag (type)); | |
273dbe67 JM |
8843 | if (old_die) |
8844 | add_AT_die_ref (type_die, DW_AT_specification, old_die); | |
a3f97cbb | 8845 | } |
4b674448 | 8846 | else |
273dbe67 | 8847 | remove_AT (type_die, DW_AT_declaration); |
a3f97cbb JW |
8848 | |
8849 | /* If this type has been completed, then give it a byte_size attribute and | |
8850 | then give a list of members. */ | |
2081603c | 8851 | if (complete) |
a3f97cbb JW |
8852 | { |
8853 | /* Prevent infinite recursion in cases where the type of some member of | |
8854 | this type is expressed in terms of this type itself. */ | |
8855 | TREE_ASM_WRITTEN (type) = 1; | |
273dbe67 | 8856 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 8857 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 8858 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 8859 | |
ef76d03b JW |
8860 | /* If the first reference to this type was as the return type of an |
8861 | inline function, then it may not have a parent. Fix this now. */ | |
8862 | if (type_die->die_parent == NULL) | |
8863 | add_child_die (scope_die, type_die); | |
8864 | ||
273dbe67 JM |
8865 | push_decl_scope (type); |
8866 | gen_member_die (type, type_die); | |
8867 | pop_decl_scope (); | |
71dfc51f | 8868 | |
a94dbf2c JM |
8869 | /* GNU extension: Record what type our vtable lives in. */ |
8870 | if (TYPE_VFIELD (type)) | |
8871 | { | |
8872 | tree vtype = DECL_FCONTEXT (TYPE_VFIELD (type)); | |
71dfc51f | 8873 | |
de6e505e JM |
8874 | gen_type_die (vtype, context_die); |
8875 | add_AT_die_ref (type_die, DW_AT_containing_type, | |
8876 | lookup_type_die (vtype)); | |
a94dbf2c | 8877 | } |
a3f97cbb | 8878 | } |
4b674448 | 8879 | else |
8a8c3656 JM |
8880 | { |
8881 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a30d4514 | 8882 | |
9765e357 JM |
8883 | /* We don't need to do this for function-local types. */ |
8884 | if (context_die) | |
a30d4514 | 8885 | add_incomplete_type (type); |
8a8c3656 | 8886 | } |
a3f97cbb JW |
8887 | } |
8888 | ||
8889 | /* Generate a DIE for a subroutine _type_. */ | |
71dfc51f | 8890 | |
a3f97cbb JW |
8891 | static void |
8892 | gen_subroutine_type_die (type, context_die) | |
8893 | register tree type; | |
8894 | register dw_die_ref context_die; | |
8895 | { | |
8896 | register tree return_type = TREE_TYPE (type); | |
71dfc51f RK |
8897 | register dw_die_ref subr_die |
8898 | = new_die (DW_TAG_subroutine_type, scope_die_for (type, context_die)); | |
8899 | ||
a3f97cbb JW |
8900 | equate_type_number_to_die (type, subr_die); |
8901 | add_prototyped_attribute (subr_die, type); | |
a3f97cbb | 8902 | add_type_attribute (subr_die, return_type, 0, 0, context_die); |
a94dbf2c | 8903 | gen_formal_types_die (type, subr_die); |
a3f97cbb JW |
8904 | } |
8905 | ||
8906 | /* Generate a DIE for a type definition */ | |
71dfc51f | 8907 | |
a3f97cbb JW |
8908 | static void |
8909 | gen_typedef_die (decl, context_die) | |
8910 | register tree decl; | |
8911 | register dw_die_ref context_die; | |
8912 | { | |
a3f97cbb | 8913 | register dw_die_ref type_die; |
a94dbf2c JM |
8914 | register tree origin; |
8915 | ||
8916 | if (TREE_ASM_WRITTEN (decl)) | |
8917 | return; | |
8918 | TREE_ASM_WRITTEN (decl) = 1; | |
8919 | ||
777ad4c2 | 8920 | type_die = new_die (DW_TAG_typedef, context_die); |
a94dbf2c | 8921 | origin = decl_ultimate_origin (decl); |
a3f97cbb | 8922 | if (origin != NULL) |
a94dbf2c | 8923 | add_abstract_origin_attribute (type_die, origin); |
a3f97cbb JW |
8924 | else |
8925 | { | |
a94dbf2c | 8926 | register tree type; |
a3f97cbb | 8927 | add_name_and_src_coords_attributes (type_die, decl); |
a94dbf2c JM |
8928 | if (DECL_ORIGINAL_TYPE (decl)) |
8929 | { | |
8930 | type = DECL_ORIGINAL_TYPE (decl); | |
8931 | equate_type_number_to_die (TREE_TYPE (decl), type_die); | |
8932 | } | |
8933 | else | |
8934 | type = TREE_TYPE (decl); | |
8935 | add_type_attribute (type_die, type, TREE_READONLY (decl), | |
8936 | TREE_THIS_VOLATILE (decl), context_die); | |
a3f97cbb | 8937 | } |
71dfc51f | 8938 | |
a3f97cbb | 8939 | if (DECL_ABSTRACT (decl)) |
a94dbf2c | 8940 | equate_decl_number_to_die (decl, type_die); |
a3f97cbb JW |
8941 | } |
8942 | ||
8943 | /* Generate a type description DIE. */ | |
71dfc51f | 8944 | |
a3f97cbb JW |
8945 | static void |
8946 | gen_type_die (type, context_die) | |
8947 | register tree type; | |
8948 | register dw_die_ref context_die; | |
8949 | { | |
348bb3c7 JM |
8950 | int need_pop; |
8951 | ||
71dfc51f RK |
8952 | if (type == NULL_TREE || type == error_mark_node) |
8953 | return; | |
a3f97cbb | 8954 | |
38e01259 | 8955 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
8956 | this type (i.e. without any const or volatile qualifiers) so get the |
8957 | main variant (i.e. the unqualified version) of this type now. */ | |
8958 | type = type_main_variant (type); | |
8959 | ||
8960 | if (TREE_ASM_WRITTEN (type)) | |
71dfc51f | 8961 | return; |
a3f97cbb | 8962 | |
a94dbf2c JM |
8963 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
8964 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
8965 | { | |
8966 | TREE_ASM_WRITTEN (type) = 1; | |
8967 | gen_decl_die (TYPE_NAME (type), context_die); | |
8968 | return; | |
8969 | } | |
8970 | ||
a3f97cbb JW |
8971 | switch (TREE_CODE (type)) |
8972 | { | |
8973 | case ERROR_MARK: | |
8974 | break; | |
8975 | ||
8976 | case POINTER_TYPE: | |
8977 | case REFERENCE_TYPE: | |
956d6950 JL |
8978 | /* We must set TREE_ASM_WRITTEN in case this is a recursive type. This |
8979 | ensures that the gen_type_die recursion will terminate even if the | |
8980 | type is recursive. Recursive types are possible in Ada. */ | |
8981 | /* ??? We could perhaps do this for all types before the switch | |
8982 | statement. */ | |
8983 | TREE_ASM_WRITTEN (type) = 1; | |
8984 | ||
a3f97cbb JW |
8985 | /* For these types, all that is required is that we output a DIE (or a |
8986 | set of DIEs) to represent the "basis" type. */ | |
8987 | gen_type_die (TREE_TYPE (type), context_die); | |
8988 | break; | |
8989 | ||
8990 | case OFFSET_TYPE: | |
71dfc51f RK |
8991 | /* This code is used for C++ pointer-to-data-member types. |
8992 | Output a description of the relevant class type. */ | |
a3f97cbb | 8993 | gen_type_die (TYPE_OFFSET_BASETYPE (type), context_die); |
71dfc51f | 8994 | |
a3f97cbb JW |
8995 | /* Output a description of the type of the object pointed to. */ |
8996 | gen_type_die (TREE_TYPE (type), context_die); | |
71dfc51f | 8997 | |
a3f97cbb JW |
8998 | /* Now output a DIE to represent this pointer-to-data-member type |
8999 | itself. */ | |
9000 | gen_ptr_to_mbr_type_die (type, context_die); | |
9001 | break; | |
9002 | ||
9003 | case SET_TYPE: | |
9004 | gen_type_die (TYPE_DOMAIN (type), context_die); | |
9005 | gen_set_type_die (type, context_die); | |
9006 | break; | |
9007 | ||
9008 | case FILE_TYPE: | |
9009 | gen_type_die (TREE_TYPE (type), context_die); | |
9010 | abort (); /* No way to represent these in Dwarf yet! */ | |
9011 | break; | |
9012 | ||
9013 | case FUNCTION_TYPE: | |
9014 | /* Force out return type (in case it wasn't forced out already). */ | |
9015 | gen_type_die (TREE_TYPE (type), context_die); | |
9016 | gen_subroutine_type_die (type, context_die); | |
9017 | break; | |
9018 | ||
9019 | case METHOD_TYPE: | |
9020 | /* Force out return type (in case it wasn't forced out already). */ | |
9021 | gen_type_die (TREE_TYPE (type), context_die); | |
9022 | gen_subroutine_type_die (type, context_die); | |
9023 | break; | |
9024 | ||
9025 | case ARRAY_TYPE: | |
9026 | if (TYPE_STRING_FLAG (type) && TREE_CODE (TREE_TYPE (type)) == CHAR_TYPE) | |
9027 | { | |
9028 | gen_type_die (TREE_TYPE (type), context_die); | |
9029 | gen_string_type_die (type, context_die); | |
9030 | } | |
9031 | else | |
71dfc51f | 9032 | gen_array_type_die (type, context_die); |
a3f97cbb JW |
9033 | break; |
9034 | ||
9035 | case ENUMERAL_TYPE: | |
9036 | case RECORD_TYPE: | |
9037 | case UNION_TYPE: | |
9038 | case QUAL_UNION_TYPE: | |
a082c85a | 9039 | /* If this is a nested type whose containing class hasn't been |
348bb3c7 JM |
9040 | written out yet, writing it out will cover this one, too. |
9041 | This does not apply to instantiations of member class templates; | |
9042 | they need to be added to the containing class as they are | |
777ad4c2 | 9043 | generated. FIXME: This hurts the idea of combining type decls |
348bb3c7 JM |
9044 | from multiple TUs, since we can't predict what set of template |
9045 | instantiations we'll get. */ | |
a082c85a | 9046 | if (TYPE_CONTEXT (type) |
5f2f160c | 9047 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type)) |
a082c85a | 9048 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) |
a94dbf2c JM |
9049 | { |
9050 | gen_type_die (TYPE_CONTEXT (type), context_die); | |
9051 | ||
348bb3c7 | 9052 | if (TREE_ASM_WRITTEN (type)) |
a94dbf2c JM |
9053 | return; |
9054 | ||
9055 | /* If that failed, attach ourselves to the stub. */ | |
9056 | push_decl_scope (TYPE_CONTEXT (type)); | |
9057 | context_die = lookup_type_die (TYPE_CONTEXT (type)); | |
348bb3c7 | 9058 | need_pop = 1; |
a94dbf2c | 9059 | } |
348bb3c7 JM |
9060 | else |
9061 | need_pop = 0; | |
a94dbf2c JM |
9062 | |
9063 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
273dbe67 | 9064 | gen_enumeration_type_die (type, context_die); |
a3f97cbb | 9065 | else |
273dbe67 | 9066 | gen_struct_or_union_type_die (type, context_die); |
4b674448 | 9067 | |
348bb3c7 | 9068 | if (need_pop) |
a94dbf2c JM |
9069 | pop_decl_scope (); |
9070 | ||
4b674448 | 9071 | /* Don't set TREE_ASM_WRITTEN on an incomplete struct; we want to fix |
a082c85a JM |
9072 | it up if it is ever completed. gen_*_type_die will set it for us |
9073 | when appropriate. */ | |
9074 | return; | |
a3f97cbb JW |
9075 | |
9076 | case VOID_TYPE: | |
9077 | case INTEGER_TYPE: | |
9078 | case REAL_TYPE: | |
9079 | case COMPLEX_TYPE: | |
9080 | case BOOLEAN_TYPE: | |
9081 | case CHAR_TYPE: | |
9082 | /* No DIEs needed for fundamental types. */ | |
9083 | break; | |
9084 | ||
9085 | case LANG_TYPE: | |
9086 | /* No Dwarf representation currently defined. */ | |
9087 | break; | |
9088 | ||
9089 | default: | |
9090 | abort (); | |
9091 | } | |
9092 | ||
9093 | TREE_ASM_WRITTEN (type) = 1; | |
9094 | } | |
9095 | ||
9096 | /* Generate a DIE for a tagged type instantiation. */ | |
71dfc51f | 9097 | |
a3f97cbb JW |
9098 | static void |
9099 | gen_tagged_type_instantiation_die (type, context_die) | |
9100 | register tree type; | |
9101 | register dw_die_ref context_die; | |
9102 | { | |
71dfc51f RK |
9103 | if (type == NULL_TREE || type == error_mark_node) |
9104 | return; | |
a3f97cbb | 9105 | |
38e01259 | 9106 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
9107 | this type (i.e. without any const or volatile qualifiers) so make sure |
9108 | that we have the main variant (i.e. the unqualified version) of this | |
9109 | type now. */ | |
bbc6ae08 | 9110 | if (type != type_main_variant (type)) |
3a88cbd1 | 9111 | abort (); |
a3f97cbb | 9112 | |
203588e7 | 9113 | /* Do not check TREE_ASM_WRITTEN (type) as it may not be set if this is |
bbc6ae08 NC |
9114 | an instance of an unresolved type. */ |
9115 | ||
a3f97cbb JW |
9116 | switch (TREE_CODE (type)) |
9117 | { | |
9118 | case ERROR_MARK: | |
9119 | break; | |
9120 | ||
9121 | case ENUMERAL_TYPE: | |
9122 | gen_inlined_enumeration_type_die (type, context_die); | |
9123 | break; | |
9124 | ||
9125 | case RECORD_TYPE: | |
9126 | gen_inlined_structure_type_die (type, context_die); | |
9127 | break; | |
9128 | ||
9129 | case UNION_TYPE: | |
9130 | case QUAL_UNION_TYPE: | |
9131 | gen_inlined_union_type_die (type, context_die); | |
9132 | break; | |
9133 | ||
9134 | default: | |
71dfc51f | 9135 | abort (); |
a3f97cbb JW |
9136 | } |
9137 | } | |
9138 | ||
9139 | /* Generate a DW_TAG_lexical_block DIE followed by DIEs to represent all of the | |
9140 | things which are local to the given block. */ | |
71dfc51f | 9141 | |
a3f97cbb | 9142 | static void |
d7248bff | 9143 | gen_block_die (stmt, context_die, depth) |
a3f97cbb JW |
9144 | register tree stmt; |
9145 | register dw_die_ref context_die; | |
d7248bff | 9146 | int depth; |
a3f97cbb JW |
9147 | { |
9148 | register int must_output_die = 0; | |
9149 | register tree origin; | |
9150 | register tree decl; | |
9151 | register enum tree_code origin_code; | |
9152 | ||
9153 | /* Ignore blocks never really used to make RTL. */ | |
9154 | ||
71dfc51f RK |
9155 | if (stmt == NULL_TREE || !TREE_USED (stmt)) |
9156 | return; | |
a3f97cbb JW |
9157 | |
9158 | /* Determine the "ultimate origin" of this block. This block may be an | |
9159 | inlined instance of an inlined instance of inline function, so we have | |
9160 | to trace all of the way back through the origin chain to find out what | |
9161 | sort of node actually served as the original seed for the creation of | |
9162 | the current block. */ | |
9163 | origin = block_ultimate_origin (stmt); | |
9164 | origin_code = (origin != NULL) ? TREE_CODE (origin) : ERROR_MARK; | |
9165 | ||
9166 | /* Determine if we need to output any Dwarf DIEs at all to represent this | |
9167 | block. */ | |
9168 | if (origin_code == FUNCTION_DECL) | |
71dfc51f RK |
9169 | /* The outer scopes for inlinings *must* always be represented. We |
9170 | generate DW_TAG_inlined_subroutine DIEs for them. (See below.) */ | |
9171 | must_output_die = 1; | |
a3f97cbb JW |
9172 | else |
9173 | { | |
9174 | /* In the case where the current block represents an inlining of the | |
9175 | "body block" of an inline function, we must *NOT* output any DIE for | |
9176 | this block because we have already output a DIE to represent the | |
9177 | whole inlined function scope and the "body block" of any function | |
9178 | doesn't really represent a different scope according to ANSI C | |
9179 | rules. So we check here to make sure that this block does not | |
9180 | represent a "body block inlining" before trying to set the | |
9181 | `must_output_die' flag. */ | |
d7248bff | 9182 | if (! is_body_block (origin ? origin : stmt)) |
a3f97cbb JW |
9183 | { |
9184 | /* Determine if this block directly contains any "significant" | |
9185 | local declarations which we will need to output DIEs for. */ | |
9186 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
71dfc51f RK |
9187 | /* We are not in terse mode so *any* local declaration counts |
9188 | as being a "significant" one. */ | |
9189 | must_output_die = (BLOCK_VARS (stmt) != NULL); | |
a3f97cbb | 9190 | else |
71dfc51f RK |
9191 | /* We are in terse mode, so only local (nested) function |
9192 | definitions count as "significant" local declarations. */ | |
9193 | for (decl = BLOCK_VARS (stmt); | |
9194 | decl != NULL; decl = TREE_CHAIN (decl)) | |
9195 | if (TREE_CODE (decl) == FUNCTION_DECL | |
9196 | && DECL_INITIAL (decl)) | |
a3f97cbb | 9197 | { |
71dfc51f RK |
9198 | must_output_die = 1; |
9199 | break; | |
a3f97cbb | 9200 | } |
a3f97cbb JW |
9201 | } |
9202 | } | |
9203 | ||
9204 | /* It would be a waste of space to generate a Dwarf DW_TAG_lexical_block | |
9205 | DIE for any block which contains no significant local declarations at | |
9206 | all. Rather, in such cases we just call `decls_for_scope' so that any | |
9207 | needed Dwarf info for any sub-blocks will get properly generated. Note | |
9208 | that in terse mode, our definition of what constitutes a "significant" | |
9209 | local declaration gets restricted to include only inlined function | |
9210 | instances and local (nested) function definitions. */ | |
9211 | if (must_output_die) | |
9212 | { | |
9213 | if (origin_code == FUNCTION_DECL) | |
71dfc51f | 9214 | gen_inlined_subroutine_die (stmt, context_die, depth); |
a3f97cbb | 9215 | else |
71dfc51f | 9216 | gen_lexical_block_die (stmt, context_die, depth); |
a3f97cbb JW |
9217 | } |
9218 | else | |
d7248bff | 9219 | decls_for_scope (stmt, context_die, depth); |
a3f97cbb JW |
9220 | } |
9221 | ||
9222 | /* Generate all of the decls declared within a given scope and (recursively) | |
9ec36da5 | 9223 | all of its sub-blocks. */ |
71dfc51f | 9224 | |
a3f97cbb | 9225 | static void |
d7248bff | 9226 | decls_for_scope (stmt, context_die, depth) |
a3f97cbb JW |
9227 | register tree stmt; |
9228 | register dw_die_ref context_die; | |
d7248bff | 9229 | int depth; |
a3f97cbb JW |
9230 | { |
9231 | register tree decl; | |
9232 | register tree subblocks; | |
71dfc51f | 9233 | |
a3f97cbb | 9234 | /* Ignore blocks never really used to make RTL. */ |
71dfc51f RK |
9235 | if (stmt == NULL_TREE || ! TREE_USED (stmt)) |
9236 | return; | |
9237 | ||
d7248bff | 9238 | if (!BLOCK_ABSTRACT (stmt) && depth > 0) |
71dfc51f | 9239 | next_block_number++; |
a3f97cbb | 9240 | |
88dad228 JM |
9241 | /* Output the DIEs to represent all of the data objects and typedefs |
9242 | declared directly within this block but not within any nested | |
9243 | sub-blocks. Also, nested function and tag DIEs have been | |
9244 | generated with a parent of NULL; fix that up now. */ | |
a3f97cbb JW |
9245 | for (decl = BLOCK_VARS (stmt); |
9246 | decl != NULL; decl = TREE_CHAIN (decl)) | |
9247 | { | |
a94dbf2c JM |
9248 | register dw_die_ref die; |
9249 | ||
88dad228 | 9250 | if (TREE_CODE (decl) == FUNCTION_DECL) |
a94dbf2c | 9251 | die = lookup_decl_die (decl); |
88dad228 | 9252 | else if (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl)) |
a94dbf2c JM |
9253 | die = lookup_type_die (TREE_TYPE (decl)); |
9254 | else | |
9255 | die = NULL; | |
9256 | ||
71dfc51f | 9257 | if (die != NULL && die->die_parent == NULL) |
ef76d03b | 9258 | add_child_die (context_die, die); |
88dad228 JM |
9259 | else |
9260 | gen_decl_die (decl, context_die); | |
a3f97cbb JW |
9261 | } |
9262 | ||
9263 | /* Output the DIEs to represent all sub-blocks (and the items declared | |
9264 | therein) of this block. */ | |
9265 | for (subblocks = BLOCK_SUBBLOCKS (stmt); | |
9266 | subblocks != NULL; | |
9267 | subblocks = BLOCK_CHAIN (subblocks)) | |
71dfc51f | 9268 | gen_block_die (subblocks, context_die, depth + 1); |
a3f97cbb JW |
9269 | } |
9270 | ||
a94dbf2c | 9271 | /* Is this a typedef we can avoid emitting? */ |
71dfc51f RK |
9272 | |
9273 | static inline int | |
a94dbf2c JM |
9274 | is_redundant_typedef (decl) |
9275 | register tree decl; | |
9276 | { | |
9277 | if (TYPE_DECL_IS_STUB (decl)) | |
9278 | return 1; | |
71dfc51f | 9279 | |
a94dbf2c JM |
9280 | if (DECL_ARTIFICIAL (decl) |
9281 | && DECL_CONTEXT (decl) | |
9282 | && is_tagged_type (DECL_CONTEXT (decl)) | |
9283 | && TREE_CODE (TYPE_NAME (DECL_CONTEXT (decl))) == TYPE_DECL | |
9284 | && DECL_NAME (decl) == DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))) | |
9285 | /* Also ignore the artificial member typedef for the class name. */ | |
9286 | return 1; | |
71dfc51f | 9287 | |
a94dbf2c JM |
9288 | return 0; |
9289 | } | |
9290 | ||
a3f97cbb | 9291 | /* Generate Dwarf debug information for a decl described by DECL. */ |
71dfc51f | 9292 | |
a3f97cbb JW |
9293 | static void |
9294 | gen_decl_die (decl, context_die) | |
9295 | register tree decl; | |
9296 | register dw_die_ref context_die; | |
9297 | { | |
9298 | register tree origin; | |
71dfc51f | 9299 | |
a3f97cbb | 9300 | if (TREE_CODE (decl) == ERROR_MARK) |
71dfc51f | 9301 | return; |
a3f97cbb JW |
9302 | |
9303 | /* If this ..._DECL node is marked to be ignored, then ignore it. But don't | |
9304 | ignore a function definition, since that would screw up our count of | |
38e01259 | 9305 | blocks, and that in turn will completely screw up the labels we will |
a3f97cbb JW |
9306 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for |
9307 | subsequent blocks). */ | |
9308 | if (DECL_IGNORED_P (decl) && TREE_CODE (decl) != FUNCTION_DECL) | |
71dfc51f | 9309 | return; |
a3f97cbb | 9310 | |
a3f97cbb JW |
9311 | switch (TREE_CODE (decl)) |
9312 | { | |
9313 | case CONST_DECL: | |
9314 | /* The individual enumerators of an enum type get output when we output | |
9315 | the Dwarf representation of the relevant enum type itself. */ | |
9316 | break; | |
9317 | ||
9318 | case FUNCTION_DECL: | |
4edb7b60 JM |
9319 | /* Don't output any DIEs to represent mere function declarations, |
9320 | unless they are class members or explicit block externs. */ | |
9321 | if (DECL_INITIAL (decl) == NULL_TREE && DECL_CONTEXT (decl) == NULL_TREE | |
777ad4c2 | 9322 | && (current_function_decl == NULL_TREE || DECL_ARTIFICIAL (decl))) |
71dfc51f | 9323 | break; |
bdb669cb | 9324 | |
10a11b75 JM |
9325 | /* Emit info for the abstract instance first, if we haven't yet. */ |
9326 | origin = decl_ultimate_origin (decl); | |
9327 | if (origin) | |
9328 | gen_abstract_function (origin); | |
9329 | ||
4927276d | 9330 | if (debug_info_level > DINFO_LEVEL_TERSE) |
a94dbf2c JM |
9331 | { |
9332 | /* Before we describe the FUNCTION_DECL itself, make sure that we | |
9333 | have described its return type. */ | |
9334 | gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die); | |
9335 | ||
2081603c JM |
9336 | /* And its virtual context. */ |
9337 | if (DECL_VINDEX (decl) != NULL_TREE) | |
9338 | gen_type_die (DECL_CONTEXT (decl), context_die); | |
9339 | ||
a94dbf2c JM |
9340 | /* And its containing type. */ |
9341 | origin = decl_class_context (decl); | |
71dfc51f | 9342 | if (origin != NULL_TREE) |
10a11b75 | 9343 | gen_type_die_for_member (origin, decl, context_die); |
a94dbf2c | 9344 | } |
a3f97cbb JW |
9345 | |
9346 | /* Now output a DIE to represent the function itself. */ | |
9347 | gen_subprogram_die (decl, context_die); | |
9348 | break; | |
9349 | ||
9350 | case TYPE_DECL: | |
9351 | /* If we are in terse mode, don't generate any DIEs to represent any | |
4927276d | 9352 | actual typedefs. */ |
a3f97cbb | 9353 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 9354 | break; |
a3f97cbb | 9355 | |
5c90448c JM |
9356 | /* In the special case of a TYPE_DECL node representing the |
9357 | declaration of some type tag, if the given TYPE_DECL is marked as | |
a3f97cbb JW |
9358 | having been instantiated from some other (original) TYPE_DECL node |
9359 | (e.g. one which was generated within the original definition of an | |
9360 | inline function) we have to generate a special (abbreviated) | |
ef76d03b | 9361 | DW_TAG_structure_type, DW_TAG_union_type, or DW_TAG_enumeration_type |
a3f97cbb | 9362 | DIE here. */ |
2081603c | 9363 | if (TYPE_DECL_IS_STUB (decl) && decl_ultimate_origin (decl) != NULL_TREE) |
a3f97cbb JW |
9364 | { |
9365 | gen_tagged_type_instantiation_die (TREE_TYPE (decl), context_die); | |
9366 | break; | |
9367 | } | |
a3f97cbb | 9368 | |
a94dbf2c JM |
9369 | if (is_redundant_typedef (decl)) |
9370 | gen_type_die (TREE_TYPE (decl), context_die); | |
9371 | else | |
71dfc51f RK |
9372 | /* Output a DIE to represent the typedef itself. */ |
9373 | gen_typedef_die (decl, context_die); | |
a3f97cbb JW |
9374 | break; |
9375 | ||
9376 | case LABEL_DECL: | |
9377 | if (debug_info_level >= DINFO_LEVEL_NORMAL) | |
71dfc51f | 9378 | gen_label_die (decl, context_die); |
a3f97cbb JW |
9379 | break; |
9380 | ||
9381 | case VAR_DECL: | |
9382 | /* If we are in terse mode, don't generate any DIEs to represent any | |
9383 | variable declarations or definitions. */ | |
9384 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 9385 | break; |
a3f97cbb JW |
9386 | |
9387 | /* Output any DIEs that are needed to specify the type of this data | |
9388 | object. */ | |
9389 | gen_type_die (TREE_TYPE (decl), context_die); | |
9390 | ||
a94dbf2c JM |
9391 | /* And its containing type. */ |
9392 | origin = decl_class_context (decl); | |
71dfc51f | 9393 | if (origin != NULL_TREE) |
10a11b75 | 9394 | gen_type_die_for_member (origin, decl, context_die); |
a94dbf2c | 9395 | |
a3f97cbb JW |
9396 | /* Now output the DIE to represent the data object itself. This gets |
9397 | complicated because of the possibility that the VAR_DECL really | |
9398 | represents an inlined instance of a formal parameter for an inline | |
9399 | function. */ | |
9400 | origin = decl_ultimate_origin (decl); | |
71dfc51f RK |
9401 | if (origin != NULL_TREE && TREE_CODE (origin) == PARM_DECL) |
9402 | gen_formal_parameter_die (decl, context_die); | |
a3f97cbb | 9403 | else |
71dfc51f | 9404 | gen_variable_die (decl, context_die); |
a3f97cbb JW |
9405 | break; |
9406 | ||
9407 | case FIELD_DECL: | |
a94dbf2c JM |
9408 | /* Ignore the nameless fields that are used to skip bits, but |
9409 | handle C++ anonymous unions. */ | |
71dfc51f RK |
9410 | if (DECL_NAME (decl) != NULL_TREE |
9411 | || TREE_CODE (TREE_TYPE (decl)) == UNION_TYPE) | |
a3f97cbb JW |
9412 | { |
9413 | gen_type_die (member_declared_type (decl), context_die); | |
9414 | gen_field_die (decl, context_die); | |
9415 | } | |
9416 | break; | |
9417 | ||
9418 | case PARM_DECL: | |
9419 | gen_type_die (TREE_TYPE (decl), context_die); | |
9420 | gen_formal_parameter_die (decl, context_die); | |
9421 | break; | |
9422 | ||
348bb3c7 JM |
9423 | case NAMESPACE_DECL: |
9424 | /* Ignore for now. */ | |
9425 | break; | |
9426 | ||
a3f97cbb JW |
9427 | default: |
9428 | abort (); | |
9429 | } | |
a3f97cbb JW |
9430 | } |
9431 | \f | |
14a774a9 RK |
9432 | /* Add Ada "use" clause information for SGI Workshop debugger. */ |
9433 | ||
9434 | void | |
9435 | dwarf2out_add_library_unit_info (filename, context_list) | |
c6991660 KG |
9436 | const char *filename; |
9437 | const char *context_list; | |
14a774a9 RK |
9438 | { |
9439 | unsigned int file_index; | |
9440 | ||
9441 | if (filename != NULL) | |
9442 | { | |
9443 | dw_die_ref unit_die = new_die (DW_TAG_module, comp_unit_die); | |
9444 | tree context_list_decl | |
9445 | = build_decl (LABEL_DECL, get_identifier (context_list), | |
9446 | void_type_node); | |
9447 | ||
9448 | TREE_PUBLIC (context_list_decl) = TRUE; | |
9449 | add_name_attribute (unit_die, context_list); | |
9450 | file_index = lookup_filename (filename); | |
9451 | add_AT_unsigned (unit_die, DW_AT_decl_file, file_index); | |
9452 | add_pubname (context_list_decl, unit_die); | |
9453 | } | |
9454 | } | |
9455 | ||
71dfc51f RK |
9456 | /* Write the debugging output for DECL. */ |
9457 | ||
a3f97cbb | 9458 | void |
88dad228 | 9459 | dwarf2out_decl (decl) |
a3f97cbb | 9460 | register tree decl; |
a3f97cbb | 9461 | { |
88dad228 JM |
9462 | register dw_die_ref context_die = comp_unit_die; |
9463 | ||
a3f97cbb | 9464 | if (TREE_CODE (decl) == ERROR_MARK) |
71dfc51f | 9465 | return; |
a3f97cbb JW |
9466 | |
9467 | /* If this ..._DECL node is marked to be ignored, then ignore it. We gotta | |
9468 | hope that the node in question doesn't represent a function definition. | |
9469 | If it does, then totally ignoring it is bound to screw up our count of | |
38e01259 | 9470 | blocks, and that in turn will completely screw up the labels we will |
a3f97cbb JW |
9471 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for |
9472 | subsequent blocks). (It's too bad that BLOCK nodes don't carry their | |
9473 | own sequence numbers with them!) */ | |
9474 | if (DECL_IGNORED_P (decl)) | |
9475 | { | |
9476 | if (TREE_CODE (decl) == FUNCTION_DECL | |
02e24c7a | 9477 | && DECL_INITIAL (decl) != NULL) |
71dfc51f RK |
9478 | abort (); |
9479 | ||
a3f97cbb JW |
9480 | return; |
9481 | } | |
9482 | ||
9483 | switch (TREE_CODE (decl)) | |
9484 | { | |
9485 | case FUNCTION_DECL: | |
9486 | /* Ignore this FUNCTION_DECL if it refers to a builtin declaration of a | |
9487 | builtin function. Explicit programmer-supplied declarations of | |
9488 | these same functions should NOT be ignored however. */ | |
9765e357 | 9489 | if (DECL_EXTERNAL (decl) && DECL_BUILT_IN (decl)) |
b1ccbc24 | 9490 | return; |
a3f97cbb JW |
9491 | |
9492 | /* What we would really like to do here is to filter out all mere | |
9493 | file-scope declarations of file-scope functions which are never | |
9494 | referenced later within this translation unit (and keep all of ones | |
956d6950 | 9495 | that *are* referenced later on) but we aren't clairvoyant, so we have |
a3f97cbb JW |
9496 | no idea which functions will be referenced in the future (i.e. later |
9497 | on within the current translation unit). So here we just ignore all | |
9498 | file-scope function declarations which are not also definitions. If | |
956d6950 | 9499 | and when the debugger needs to know something about these functions, |
bbc6ae08 NC |
9500 | it will have to hunt around and find the DWARF information associated |
9501 | with the definition of the function. Note that we can't just check | |
a3f97cbb JW |
9502 | `DECL_EXTERNAL' to find out which FUNCTION_DECL nodes represent |
9503 | definitions and which ones represent mere declarations. We have to | |
9504 | check `DECL_INITIAL' instead. That's because the C front-end | |
9505 | supports some weird semantics for "extern inline" function | |
9506 | definitions. These can get inlined within the current translation | |
9507 | unit (an thus, we need to generate DWARF info for their abstract | |
9508 | instances so that the DWARF info for the concrete inlined instances | |
9509 | can have something to refer to) but the compiler never generates any | |
9510 | out-of-lines instances of such things (despite the fact that they | |
9511 | *are* definitions). The important point is that the C front-end | |
9512 | marks these "extern inline" functions as DECL_EXTERNAL, but we need | |
273dbe67 | 9513 | to generate DWARF for them anyway. Note that the C++ front-end also |
a3f97cbb JW |
9514 | plays some similar games for inline function definitions appearing |
9515 | within include files which also contain | |
9516 | `#pragma interface' pragmas. */ | |
9517 | if (DECL_INITIAL (decl) == NULL_TREE) | |
b1ccbc24 | 9518 | return; |
88dad228 | 9519 | |
9c6cd30e JM |
9520 | /* If we're a nested function, initially use a parent of NULL; if we're |
9521 | a plain function, this will be fixed up in decls_for_scope. If | |
9522 | we're a method, it will be ignored, since we already have a DIE. */ | |
88dad228 | 9523 | if (decl_function_context (decl)) |
9c6cd30e | 9524 | context_die = NULL; |
88dad228 | 9525 | |
a3f97cbb JW |
9526 | break; |
9527 | ||
9528 | case VAR_DECL: | |
9529 | /* Ignore this VAR_DECL if it refers to a file-scope extern data object | |
9530 | declaration and if the declaration was never even referenced from | |
9531 | within this entire compilation unit. We suppress these DIEs in | |
9532 | order to save space in the .debug section (by eliminating entries | |
9533 | which are probably useless). Note that we must not suppress | |
9534 | block-local extern declarations (whether used or not) because that | |
9535 | would screw-up the debugger's name lookup mechanism and cause it to | |
9536 | miss things which really ought to be in scope at a given point. */ | |
9537 | if (DECL_EXTERNAL (decl) && !TREE_USED (decl)) | |
71dfc51f | 9538 | return; |
a3f97cbb JW |
9539 | |
9540 | /* If we are in terse mode, don't generate any DIEs to represent any | |
9541 | variable declarations or definitions. */ | |
9542 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 9543 | return; |
a3f97cbb JW |
9544 | break; |
9545 | ||
9546 | case TYPE_DECL: | |
9547 | /* Don't bother trying to generate any DIEs to represent any of the | |
a9d38797 JM |
9548 | normal built-in types for the language we are compiling. */ |
9549 | if (DECL_SOURCE_LINE (decl) == 0) | |
a94dbf2c JM |
9550 | { |
9551 | /* OK, we need to generate one for `bool' so GDB knows what type | |
9552 | comparisons have. */ | |
9553 | if ((get_AT_unsigned (comp_unit_die, DW_AT_language) | |
9554 | == DW_LANG_C_plus_plus) | |
9555 | && TREE_CODE (TREE_TYPE (decl)) == BOOLEAN_TYPE) | |
9556 | modified_type_die (TREE_TYPE (decl), 0, 0, NULL); | |
71dfc51f | 9557 | |
a94dbf2c JM |
9558 | return; |
9559 | } | |
a3f97cbb | 9560 | |
88dad228 | 9561 | /* If we are in terse mode, don't generate any DIEs for types. */ |
a3f97cbb | 9562 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 9563 | return; |
88dad228 JM |
9564 | |
9565 | /* If we're a function-scope tag, initially use a parent of NULL; | |
9566 | this will be fixed up in decls_for_scope. */ | |
9567 | if (decl_function_context (decl)) | |
3f76745e | 9568 | context_die = NULL; |
88dad228 | 9569 | |
a3f97cbb JW |
9570 | break; |
9571 | ||
9572 | default: | |
9573 | return; | |
9574 | } | |
9575 | ||
88dad228 | 9576 | gen_decl_die (decl, context_die); |
a3f97cbb JW |
9577 | } |
9578 | ||
9579 | /* Output a marker (i.e. a label) for the beginning of the generated code for | |
9580 | a lexical block. */ | |
71dfc51f | 9581 | |
a3f97cbb | 9582 | void |
9a666dda | 9583 | dwarf2out_begin_block (blocknum) |
a3f97cbb JW |
9584 | register unsigned blocknum; |
9585 | { | |
a3f97cbb | 9586 | function_section (current_function_decl); |
5c90448c | 9587 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum); |
a3f97cbb JW |
9588 | } |
9589 | ||
9590 | /* Output a marker (i.e. a label) for the end of the generated code for a | |
9591 | lexical block. */ | |
71dfc51f | 9592 | |
a3f97cbb | 9593 | void |
9a666dda | 9594 | dwarf2out_end_block (blocknum) |
a3f97cbb JW |
9595 | register unsigned blocknum; |
9596 | { | |
a3f97cbb | 9597 | function_section (current_function_decl); |
5c90448c | 9598 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum); |
a3f97cbb JW |
9599 | } |
9600 | ||
9601 | /* Output a marker (i.e. a label) at a point in the assembly code which | |
9602 | corresponds to a given source level label. */ | |
71dfc51f | 9603 | |
a3f97cbb | 9604 | void |
9a666dda | 9605 | dwarf2out_label (insn) |
a3f97cbb JW |
9606 | register rtx insn; |
9607 | { | |
9608 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f | 9609 | |
a3f97cbb JW |
9610 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
9611 | { | |
9612 | function_section (current_function_decl); | |
5c90448c JM |
9613 | sprintf (label, INSN_LABEL_FMT, current_funcdef_number); |
9614 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, label, | |
9615 | (unsigned) INSN_UID (insn)); | |
a3f97cbb JW |
9616 | } |
9617 | } | |
9618 | ||
a3f97cbb | 9619 | /* Lookup a filename (in the list of filenames that we know about here in |
9a666dda | 9620 | dwarf2out.c) and return its "index". The index of each (known) filename is |
a3f97cbb JW |
9621 | just a unique number which is associated with only that one filename. |
9622 | We need such numbers for the sake of generating labels | |
9623 | (in the .debug_sfnames section) and references to those | |
9624 | files numbers (in the .debug_srcinfo and.debug_macinfo sections). | |
9625 | If the filename given as an argument is not found in our current list, | |
9626 | add it to the list and assign it the next available unique index number. | |
9627 | In order to speed up searches, we remember the index of the filename | |
9628 | was looked up last. This handles the majority of all searches. */ | |
71dfc51f | 9629 | |
a3f97cbb JW |
9630 | static unsigned |
9631 | lookup_filename (file_name) | |
d560ee52 | 9632 | const char *file_name; |
a3f97cbb JW |
9633 | { |
9634 | static unsigned last_file_lookup_index = 0; | |
a3f97cbb JW |
9635 | register unsigned i; |
9636 | ||
9637 | /* Check to see if the file name that was searched on the previous call | |
9638 | matches this file name. If so, return the index. */ | |
9639 | if (last_file_lookup_index != 0) | |
71dfc51f RK |
9640 | if (strcmp (file_name, file_table[last_file_lookup_index]) == 0) |
9641 | return last_file_lookup_index; | |
a3f97cbb JW |
9642 | |
9643 | /* Didn't match the previous lookup, search the table */ | |
9644 | for (i = 1; i < file_table_in_use; ++i) | |
71dfc51f RK |
9645 | if (strcmp (file_name, file_table[i]) == 0) |
9646 | { | |
9647 | last_file_lookup_index = i; | |
9648 | return i; | |
9649 | } | |
a3f97cbb JW |
9650 | |
9651 | /* Prepare to add a new table entry by making sure there is enough space in | |
9652 | the table to do so. If not, expand the current table. */ | |
9653 | if (file_table_in_use == file_table_allocated) | |
9654 | { | |
9655 | file_table_allocated += FILE_TABLE_INCREMENT; | |
9656 | file_table | |
71dfc51f RK |
9657 | = (char **) xrealloc (file_table, |
9658 | file_table_allocated * sizeof (char *)); | |
a3f97cbb JW |
9659 | } |
9660 | ||
71dfc51f | 9661 | /* Add the new entry to the end of the filename table. */ |
a3f97cbb JW |
9662 | file_table[file_table_in_use] = xstrdup (file_name); |
9663 | last_file_lookup_index = file_table_in_use++; | |
71dfc51f | 9664 | |
a3f97cbb JW |
9665 | return last_file_lookup_index; |
9666 | } | |
9667 | ||
9668 | /* Output a label to mark the beginning of a source code line entry | |
9669 | and record information relating to this source line, in | |
9670 | 'line_info_table' for later output of the .debug_line section. */ | |
71dfc51f | 9671 | |
a3f97cbb | 9672 | void |
9a666dda | 9673 | dwarf2out_line (filename, line) |
d560ee52 | 9674 | register const char *filename; |
a3f97cbb JW |
9675 | register unsigned line; |
9676 | { | |
a3f97cbb JW |
9677 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
9678 | { | |
9679 | function_section (current_function_decl); | |
a3f97cbb | 9680 | |
b2244e22 JW |
9681 | if (DWARF2_ASM_LINE_DEBUG_INFO) |
9682 | { | |
e2bef702 | 9683 | static const char *lastfile; |
b2244e22 JW |
9684 | |
9685 | /* Emit the .file and .loc directives understood by GNU as. */ | |
9686 | if (lastfile == 0 || strcmp (filename, lastfile)) | |
9687 | { | |
951a525f MM |
9688 | if (lastfile == 0) |
9689 | ggc_add_string_root ((char **) &lastfile, 1); | |
9690 | ||
b2244e22 JW |
9691 | fprintf (asm_out_file, "\t.file 0 \"%s\"\n", filename); |
9692 | lastfile = filename; | |
9693 | } | |
9694 | ||
9695 | fprintf (asm_out_file, "\t.loc 0 %d 0\n", line); | |
9696 | ||
9697 | /* Indicate that line number info exists. */ | |
9698 | ++line_info_table_in_use; | |
9699 | ||
9700 | /* Indicate that multiple line number tables exist. */ | |
9701 | if (DECL_SECTION_NAME (current_function_decl)) | |
9702 | ++separate_line_info_table_in_use; | |
9703 | } | |
9704 | else if (DECL_SECTION_NAME (current_function_decl)) | |
a3f97cbb | 9705 | { |
e90b62db | 9706 | register dw_separate_line_info_ref line_info; |
5c90448c JM |
9707 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, SEPARATE_LINE_CODE_LABEL, |
9708 | separate_line_info_table_in_use); | |
ac260b05 JM |
9709 | if (flag_debug_asm) |
9710 | fprintf (asm_out_file, "\t%s line %d", ASM_COMMENT_START, line); | |
e90b62db JM |
9711 | fputc ('\n', asm_out_file); |
9712 | ||
9713 | /* expand the line info table if necessary */ | |
9714 | if (separate_line_info_table_in_use | |
9715 | == separate_line_info_table_allocated) | |
9716 | { | |
9717 | separate_line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
9718 | separate_line_info_table | |
71dfc51f RK |
9719 | = (dw_separate_line_info_ref) |
9720 | xrealloc (separate_line_info_table, | |
9721 | separate_line_info_table_allocated | |
9722 | * sizeof (dw_separate_line_info_entry)); | |
e90b62db | 9723 | } |
71dfc51f RK |
9724 | |
9725 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
9726 | line_info |
9727 | = &separate_line_info_table[separate_line_info_table_in_use++]; | |
9728 | line_info->dw_file_num = lookup_filename (filename); | |
9729 | line_info->dw_line_num = line; | |
9730 | line_info->function = current_funcdef_number; | |
9731 | } | |
9732 | else | |
9733 | { | |
9734 | register dw_line_info_ref line_info; | |
71dfc51f | 9735 | |
5c90448c JM |
9736 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, LINE_CODE_LABEL, |
9737 | line_info_table_in_use); | |
ac260b05 JM |
9738 | if (flag_debug_asm) |
9739 | fprintf (asm_out_file, "\t%s line %d", ASM_COMMENT_START, line); | |
e90b62db JM |
9740 | fputc ('\n', asm_out_file); |
9741 | ||
71dfc51f | 9742 | /* Expand the line info table if necessary. */ |
e90b62db JM |
9743 | if (line_info_table_in_use == line_info_table_allocated) |
9744 | { | |
9745 | line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
9746 | line_info_table | |
71dfc51f RK |
9747 | = (dw_line_info_ref) |
9748 | xrealloc (line_info_table, | |
9749 | (line_info_table_allocated | |
9750 | * sizeof (dw_line_info_entry))); | |
e90b62db | 9751 | } |
71dfc51f RK |
9752 | |
9753 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
9754 | line_info = &line_info_table[line_info_table_in_use++]; |
9755 | line_info->dw_file_num = lookup_filename (filename); | |
9756 | line_info->dw_line_num = line; | |
a3f97cbb | 9757 | } |
a3f97cbb JW |
9758 | } |
9759 | } | |
9760 | ||
9761 | /* Record the beginning of a new source file, for later output | |
9762 | of the .debug_macinfo section. At present, unimplemented. */ | |
71dfc51f | 9763 | |
a3f97cbb | 9764 | void |
9a666dda | 9765 | dwarf2out_start_source_file (filename) |
d560ee52 | 9766 | register const char *filename ATTRIBUTE_UNUSED; |
a3f97cbb JW |
9767 | { |
9768 | } | |
9769 | ||
9a666dda | 9770 | /* Record the end of a source file, for later output |
a3f97cbb | 9771 | of the .debug_macinfo section. At present, unimplemented. */ |
71dfc51f | 9772 | |
a3f97cbb | 9773 | void |
9a666dda | 9774 | dwarf2out_end_source_file () |
a3f97cbb JW |
9775 | { |
9776 | } | |
9777 | ||
9778 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
9779 | the tail part of the directive line, i.e. the part which is past the | |
9780 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 9781 | |
a3f97cbb | 9782 | void |
9a666dda | 9783 | dwarf2out_define (lineno, buffer) |
2618f955 | 9784 | register unsigned lineno ATTRIBUTE_UNUSED; |
d560ee52 | 9785 | register const char *buffer ATTRIBUTE_UNUSED; |
a3f97cbb JW |
9786 | { |
9787 | static int initialized = 0; | |
9788 | if (!initialized) | |
9789 | { | |
9a666dda | 9790 | dwarf2out_start_source_file (primary_filename); |
a3f97cbb JW |
9791 | initialized = 1; |
9792 | } | |
9793 | } | |
9794 | ||
9795 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
9796 | the tail part of the directive line, i.e. the part which is past the | |
9797 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 9798 | |
a3f97cbb | 9799 | void |
9a666dda | 9800 | dwarf2out_undef (lineno, buffer) |
487a6e06 | 9801 | register unsigned lineno ATTRIBUTE_UNUSED; |
d560ee52 | 9802 | register const char *buffer ATTRIBUTE_UNUSED; |
a3f97cbb JW |
9803 | { |
9804 | } | |
9805 | ||
9806 | /* Set up for Dwarf output at the start of compilation. */ | |
71dfc51f | 9807 | |
a3f97cbb | 9808 | void |
9a666dda | 9809 | dwarf2out_init (asm_out_file, main_input_filename) |
a3f97cbb JW |
9810 | register FILE *asm_out_file; |
9811 | register char *main_input_filename; | |
9812 | { | |
a3f97cbb JW |
9813 | /* Remember the name of the primary input file. */ |
9814 | primary_filename = main_input_filename; | |
9815 | ||
9816 | /* Allocate the initial hunk of the file_table. */ | |
3de90026 | 9817 | file_table = (char **) xcalloc (FILE_TABLE_INCREMENT, sizeof (char *)); |
a3f97cbb | 9818 | file_table_allocated = FILE_TABLE_INCREMENT; |
71dfc51f RK |
9819 | |
9820 | /* Skip the first entry - file numbers begin at 1. */ | |
a3f97cbb JW |
9821 | file_table_in_use = 1; |
9822 | ||
a3f97cbb JW |
9823 | /* Allocate the initial hunk of the decl_die_table. */ |
9824 | decl_die_table | |
3de90026 | 9825 | = (dw_die_ref *) xcalloc (DECL_DIE_TABLE_INCREMENT, sizeof (dw_die_ref)); |
a3f97cbb JW |
9826 | decl_die_table_allocated = DECL_DIE_TABLE_INCREMENT; |
9827 | decl_die_table_in_use = 0; | |
9828 | ||
9829 | /* Allocate the initial hunk of the decl_scope_table. */ | |
9830 | decl_scope_table | |
777ad4c2 | 9831 | = (tree *) xcalloc (DECL_SCOPE_TABLE_INCREMENT, sizeof (tree)); |
a3f97cbb JW |
9832 | decl_scope_table_allocated = DECL_SCOPE_TABLE_INCREMENT; |
9833 | decl_scope_depth = 0; | |
9834 | ||
9835 | /* Allocate the initial hunk of the abbrev_die_table. */ | |
9836 | abbrev_die_table | |
3de90026 RH |
9837 | = (dw_die_ref *) xcalloc (ABBREV_DIE_TABLE_INCREMENT, |
9838 | sizeof (dw_die_ref)); | |
a3f97cbb | 9839 | abbrev_die_table_allocated = ABBREV_DIE_TABLE_INCREMENT; |
71dfc51f | 9840 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
9841 | abbrev_die_table_in_use = 1; |
9842 | ||
9843 | /* Allocate the initial hunk of the line_info_table. */ | |
9844 | line_info_table | |
3de90026 RH |
9845 | = (dw_line_info_ref) xcalloc (LINE_INFO_TABLE_INCREMENT, |
9846 | sizeof (dw_line_info_entry)); | |
a3f97cbb | 9847 | line_info_table_allocated = LINE_INFO_TABLE_INCREMENT; |
71dfc51f | 9848 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
9849 | line_info_table_in_use = 1; |
9850 | ||
a3f97cbb JW |
9851 | /* Generate the initial DIE for the .debug section. Note that the (string) |
9852 | value given in the DW_AT_name attribute of the DW_TAG_compile_unit DIE | |
9853 | will (typically) be a relative pathname and that this pathname should be | |
9854 | taken as being relative to the directory from which the compiler was | |
9855 | invoked when the given (base) source file was compiled. */ | |
a96c67ec | 9856 | comp_unit_die = gen_compile_unit_die (main_input_filename); |
a3f97cbb | 9857 | |
1865dbb5 JM |
9858 | if (ggc_p) |
9859 | { | |
9860 | VARRAY_RTX_INIT (used_rtx_varray, 32, "used_rtx_varray"); | |
ef8288f7 | 9861 | ggc_add_rtx_varray_root (&used_rtx_varray, 1); |
1865dbb5 JM |
9862 | } |
9863 | ||
5c90448c | 9864 | ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0); |
8b790721 | 9865 | ASM_GENERATE_INTERNAL_LABEL (abbrev_section_label, ABBREV_SECTION_LABEL, 0); |
b366352b MM |
9866 | if (DWARF2_GENERATE_TEXT_SECTION_LABEL) |
9867 | ASM_GENERATE_INTERNAL_LABEL (text_section_label, TEXT_SECTION_LABEL, 0); | |
9868 | else | |
9869 | strcpy (text_section_label, stripattributes (TEXT_SECTION)); | |
8b790721 JM |
9870 | ASM_GENERATE_INTERNAL_LABEL (debug_info_section_label, |
9871 | DEBUG_INFO_SECTION_LABEL, 0); | |
9872 | ASM_GENERATE_INTERNAL_LABEL (debug_line_section_label, | |
9873 | DEBUG_LINE_SECTION_LABEL, 0); | |
9874 | ||
9875 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
9876 | ASM_OUTPUT_LABEL (asm_out_file, abbrev_section_label); | |
b366352b | 9877 | if (DWARF2_GENERATE_TEXT_SECTION_LABEL) |
a96c67ec JM |
9878 | { |
9879 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
9880 | ASM_OUTPUT_LABEL (asm_out_file, text_section_label); | |
9881 | } | |
8b790721 JM |
9882 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_INFO_SECTION); |
9883 | ASM_OUTPUT_LABEL (asm_out_file, debug_info_section_label); | |
9884 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION); | |
9885 | ASM_OUTPUT_LABEL (asm_out_file, debug_line_section_label); | |
a3f97cbb JW |
9886 | } |
9887 | ||
9888 | /* Output stuff that dwarf requires at the end of every file, | |
9889 | and generate the DWARF-2 debugging info. */ | |
71dfc51f | 9890 | |
a3f97cbb | 9891 | void |
9a666dda | 9892 | dwarf2out_finish () |
a3f97cbb | 9893 | { |
ef76d03b JW |
9894 | limbo_die_node *node, *next_node; |
9895 | dw_die_ref die; | |
ef76d03b JW |
9896 | |
9897 | /* Traverse the limbo die list, and add parent/child links. The only | |
9898 | dies without parents that should be here are concrete instances of | |
9899 | inline functions, and the comp_unit_die. We can ignore the comp_unit_die. | |
9900 | For concrete instances, we can get the parent die from the abstract | |
9901 | instance. */ | |
9902 | for (node = limbo_die_list; node; node = next_node) | |
9903 | { | |
9904 | next_node = node->next; | |
9905 | die = node->die; | |
9906 | ||
9907 | if (die->die_parent == NULL) | |
9908 | { | |
a96c67ec JM |
9909 | dw_die_ref origin = get_AT_ref (die, DW_AT_abstract_origin); |
9910 | if (origin) | |
9911 | add_child_die (origin->die_parent, die); | |
ef76d03b | 9912 | else if (die == comp_unit_die) |
a96c67ec | 9913 | ; |
ef76d03b JW |
9914 | else |
9915 | abort (); | |
9916 | } | |
9917 | free (node); | |
9918 | } | |
a96c67ec | 9919 | limbo_die_list = NULL; |
ef76d03b | 9920 | |
8a8c3656 JM |
9921 | /* Walk through the list of incomplete types again, trying once more to |
9922 | emit full debugging info for them. */ | |
9923 | retry_incomplete_types (); | |
9924 | ||
a96c67ec JM |
9925 | /* Traverse the DIE's, reverse their lists of attributes and children, |
9926 | and add add sibling attributes to those DIE's that have children. */ | |
a3f97cbb JW |
9927 | add_sibling_attributes (comp_unit_die); |
9928 | ||
9929 | /* Output a terminator label for the .text section. */ | |
9930 | fputc ('\n', asm_out_file); | |
9931 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
5c90448c | 9932 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, TEXT_END_LABEL, 0); |
a3f97cbb | 9933 | |
bdb669cb | 9934 | #if 0 |
a3f97cbb JW |
9935 | /* Output a terminator label for the .data section. */ |
9936 | fputc ('\n', asm_out_file); | |
9937 | ASM_OUTPUT_SECTION (asm_out_file, DATA_SECTION); | |
5c90448c | 9938 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, DATA_END_LABEL, 0); |
a3f97cbb JW |
9939 | |
9940 | /* Output a terminator label for the .bss section. */ | |
9941 | fputc ('\n', asm_out_file); | |
9942 | ASM_OUTPUT_SECTION (asm_out_file, BSS_SECTION); | |
5c90448c | 9943 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BSS_END_LABEL, 0); |
bdb669cb | 9944 | #endif |
a3f97cbb | 9945 | |
e90b62db JM |
9946 | /* Output the source line correspondence table. */ |
9947 | if (line_info_table_in_use > 1 || separate_line_info_table_in_use) | |
9948 | { | |
b2244e22 JW |
9949 | if (! DWARF2_ASM_LINE_DEBUG_INFO) |
9950 | { | |
9951 | fputc ('\n', asm_out_file); | |
9952 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION); | |
9953 | output_line_info (); | |
9954 | } | |
e90b62db JM |
9955 | |
9956 | /* We can only use the low/high_pc attributes if all of the code | |
9957 | was in .text. */ | |
9958 | if (separate_line_info_table_in_use == 0) | |
9959 | { | |
8b790721 | 9960 | add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, text_section_label); |
5c90448c | 9961 | add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label); |
e90b62db | 9962 | } |
71dfc51f | 9963 | |
8b790721 JM |
9964 | add_AT_lbl_offset (comp_unit_die, DW_AT_stmt_list, |
9965 | debug_line_section_label); | |
e90b62db JM |
9966 | } |
9967 | ||
a96c67ec JM |
9968 | #if 0 /* unimplemented */ |
9969 | if (debug_info_level >= DINFO_LEVEL_VERBOSE && primary) | |
9970 | add_AT_unsigned (die, DW_AT_macro_info, 0); | |
9971 | #endif | |
9972 | ||
a3f97cbb JW |
9973 | /* Output the abbreviation table. */ |
9974 | fputc ('\n', asm_out_file); | |
9975 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
9976 | build_abbrev_table (comp_unit_die); | |
9977 | output_abbrev_section (); | |
9978 | ||
a3f97cbb JW |
9979 | /* Initialize the beginning DIE offset - and calculate sizes/offsets. */ |
9980 | next_die_offset = DWARF_COMPILE_UNIT_HEADER_SIZE; | |
9981 | calc_die_sizes (comp_unit_die); | |
9982 | ||
a3f97cbb JW |
9983 | /* Output debugging information. */ |
9984 | fputc ('\n', asm_out_file); | |
c53aa195 | 9985 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_INFO_SECTION); |
a3f97cbb JW |
9986 | output_compilation_unit_header (); |
9987 | output_die (comp_unit_die); | |
9988 | ||
d291dd49 JM |
9989 | if (pubname_table_in_use) |
9990 | { | |
9991 | /* Output public names table. */ | |
9992 | fputc ('\n', asm_out_file); | |
9993 | ASM_OUTPUT_SECTION (asm_out_file, PUBNAMES_SECTION); | |
9994 | output_pubnames (); | |
9995 | } | |
9996 | ||
e689ae67 JM |
9997 | /* We only put functions in the arange table, so don't write it out if |
9998 | we don't have any. */ | |
a3f97cbb JW |
9999 | if (fde_table_in_use) |
10000 | { | |
a3f97cbb JW |
10001 | /* Output the address range information. */ |
10002 | fputc ('\n', asm_out_file); | |
10003 | ASM_OUTPUT_SECTION (asm_out_file, ARANGES_SECTION); | |
10004 | output_aranges (); | |
10005 | } | |
10006 | } | |
9a666dda | 10007 | #endif /* DWARF2_DEBUGGING_INFO */ |