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Commit | Line | Data |
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a3f97cbb | 1 | /* Output Dwarf2 format symbol table information from the GNU C compiler. |
fa1610e9 | 2 | Copyright (C) 1992, 1993, 1995, 1996, 1997 Free Software Foundation, Inc. |
e9a25f70 JL |
3 | Contributed by Gary Funck (gary@intrepid.com). |
4 | Derived from DWARF 1 implementation of Ron Guilmette (rfg@monkeys.com). | |
469ac993 | 5 | Extensively modified by Jason Merrill (jason@cygnus.com). |
a3f97cbb JW |
6 | |
7 | This file is part of GNU CC. | |
8 | ||
9 | GNU CC is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GNU CC is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GNU CC; see the file COPYING. If not, write to | |
21 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
22 | ||
3f76745e JM |
23 | /* The first part of this file deals with the DWARF 2 frame unwind |
24 | information, which is also used by the GCC efficient exception handling | |
25 | mechanism. The second part, controlled only by an #ifdef | |
26 | DWARF2_DEBUGGING_INFO, deals with the other DWARF 2 debugging | |
27 | information. */ | |
28 | ||
0021b564 JM |
29 | #include "config.h" |
30 | #include "defaults.h" | |
a3f97cbb | 31 | #include <stdio.h> |
a3f97cbb JW |
32 | #include "tree.h" |
33 | #include "flags.h" | |
34 | #include "rtl.h" | |
35 | #include "hard-reg-set.h" | |
36 | #include "regs.h" | |
37 | #include "insn-config.h" | |
38 | #include "reload.h" | |
39 | #include "output.h" | |
71dfc51f | 40 | #include "expr.h" |
3f76745e | 41 | #include "except.h" |
a7cc7f29 | 42 | #include "dwarf2.h" |
a3f97cbb | 43 | |
0021b564 JM |
44 | /* Decide whether we want to emit frame unwind information for the current |
45 | translation unit. */ | |
46 | ||
47 | int | |
48 | dwarf2out_do_frame () | |
49 | { | |
50 | return (write_symbols == DWARF2_DEBUG | |
51 | #ifdef DWARF2_UNWIND_INFO | |
52 | || (flag_exceptions && ! exceptions_via_longjmp) | |
53 | #endif | |
54 | ); | |
55 | } | |
56 | ||
57 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) | |
58 | ||
71dfc51f RK |
59 | #ifndef __GNUC__ |
60 | #define inline | |
a3f97cbb JW |
61 | #endif |
62 | ||
eaf95893 RK |
63 | /* How to start an assembler comment. */ |
64 | #ifndef ASM_COMMENT_START | |
65 | #define ASM_COMMENT_START ";#" | |
66 | #endif | |
67 | ||
a3f97cbb JW |
68 | typedef struct dw_cfi_struct *dw_cfi_ref; |
69 | typedef struct dw_fde_struct *dw_fde_ref; | |
70 | typedef union dw_cfi_oprnd_struct *dw_cfi_oprnd_ref; | |
a3f97cbb JW |
71 | |
72 | /* Call frames are described using a sequence of Call Frame | |
73 | Information instructions. The register number, offset | |
74 | and address fields are provided as possible operands; | |
75 | their use is selected by the opcode field. */ | |
71dfc51f | 76 | |
a3f97cbb | 77 | typedef union dw_cfi_oprnd_struct |
71dfc51f RK |
78 | { |
79 | unsigned long dw_cfi_reg_num; | |
80 | long int dw_cfi_offset; | |
81 | char *dw_cfi_addr; | |
82 | } | |
a3f97cbb JW |
83 | dw_cfi_oprnd; |
84 | ||
85 | typedef struct dw_cfi_struct | |
71dfc51f RK |
86 | { |
87 | dw_cfi_ref dw_cfi_next; | |
88 | enum dwarf_call_frame_info dw_cfi_opc; | |
89 | dw_cfi_oprnd dw_cfi_oprnd1; | |
90 | dw_cfi_oprnd dw_cfi_oprnd2; | |
91 | } | |
a3f97cbb JW |
92 | dw_cfi_node; |
93 | ||
94 | /* All call frame descriptions (FDE's) in the GCC generated DWARF | |
4b674448 | 95 | refer to a single Common Information Entry (CIE), defined at |
a3f97cbb JW |
96 | the beginning of the .debug_frame section. This used of a single |
97 | CIE obviates the need to keep track of multiple CIE's | |
98 | in the DWARF generation routines below. */ | |
71dfc51f | 99 | |
a3f97cbb | 100 | typedef struct dw_fde_struct |
71dfc51f | 101 | { |
71dfc51f RK |
102 | char *dw_fde_begin; |
103 | char *dw_fde_current_label; | |
104 | char *dw_fde_end; | |
105 | dw_cfi_ref dw_fde_cfi; | |
106 | } | |
a3f97cbb JW |
107 | dw_fde_node; |
108 | ||
a3f97cbb JW |
109 | /* Maximum size (in bytes) of an artificially generated label. */ |
110 | #define MAX_ARTIFICIAL_LABEL_BYTES 30 | |
111 | ||
112 | /* Make sure we know the sizes of the various types dwarf can describe. These | |
113 | are only defaults. If the sizes are different for your target, you should | |
114 | override these values by defining the appropriate symbols in your tm.h | |
115 | file. */ | |
71dfc51f | 116 | |
a3f97cbb JW |
117 | #ifndef CHAR_TYPE_SIZE |
118 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
119 | #endif | |
a3f97cbb | 120 | #ifndef PTR_SIZE |
a9d38797 | 121 | #define PTR_SIZE (POINTER_SIZE / BITS_PER_UNIT) |
a3f97cbb JW |
122 | #endif |
123 | ||
7e23cb16 JM |
124 | /* The size in bytes of a DWARF field indicating an offset or length |
125 | relative to a debug info section, specified to be 4 bytes in the DWARF-2 | |
126 | specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */ | |
71dfc51f | 127 | |
7e23cb16 JM |
128 | #ifndef DWARF_OFFSET_SIZE |
129 | #define DWARF_OFFSET_SIZE 4 | |
130 | #endif | |
131 | ||
9a666dda JM |
132 | #define DWARF_VERSION 2 |
133 | ||
7e23cb16 JM |
134 | /* Round SIZE up to the nearest BOUNDARY. */ |
135 | #define DWARF_ROUND(SIZE,BOUNDARY) \ | |
136 | (((SIZE) + (BOUNDARY) - 1) & ~((BOUNDARY) - 1)) | |
a3f97cbb | 137 | |
a3f97cbb | 138 | /* Offsets recorded in opcodes are a multiple of this alignment factor. */ |
469ac993 JM |
139 | #ifdef STACK_GROWS_DOWNWARD |
140 | #define DWARF_CIE_DATA_ALIGNMENT (-UNITS_PER_WORD) | |
141 | #else | |
142 | #define DWARF_CIE_DATA_ALIGNMENT UNITS_PER_WORD | |
143 | #endif | |
a3f97cbb | 144 | |
3f76745e JM |
145 | /* A pointer to the base of a table that contains frame description |
146 | information for each routine. */ | |
147 | static dw_fde_ref fde_table; | |
a3f97cbb | 148 | |
3f76745e JM |
149 | /* Number of elements currently allocated for fde_table. */ |
150 | static unsigned fde_table_allocated; | |
a94dbf2c | 151 | |
3f76745e JM |
152 | /* Number of elements in fde_table currently in use. */ |
153 | static unsigned fde_table_in_use; | |
a3f97cbb | 154 | |
3f76745e JM |
155 | /* Size (in elements) of increments by which we may expand the |
156 | fde_table. */ | |
157 | #define FDE_TABLE_INCREMENT 256 | |
a3f97cbb | 158 | |
a94dbf2c JM |
159 | /* A list of call frame insns for the CIE. */ |
160 | static dw_cfi_ref cie_cfi_head; | |
161 | ||
a3f97cbb JW |
162 | /* The number of the current function definition for which debugging |
163 | information is being generated. These numbers range from 1 up to the | |
164 | maximum number of function definitions contained within the current | |
165 | compilation unit. These numbers are used to create unique label id's | |
166 | unique to each function definition. */ | |
4f988ea2 | 167 | static unsigned current_funcdef_number = 0; |
a3f97cbb JW |
168 | |
169 | /* Some DWARF extensions (e.g., MIPS/SGI) implement a subprogram | |
170 | attribute that accelerates the lookup of the FDE associated | |
171 | with the subprogram. This variable holds the table index of the FDE | |
172 | associated with the current function (body) definition. */ | |
173 | static unsigned current_funcdef_fde; | |
174 | ||
a3f97cbb | 175 | /* Forward declarations for functions defined in this file. */ |
71dfc51f RK |
176 | |
177 | static char *stripattributes PROTO((char *)); | |
3f76745e JM |
178 | static char *dwarf_cfi_name PROTO((unsigned)); |
179 | static dw_cfi_ref new_cfi PROTO((void)); | |
180 | static void add_cfi PROTO((dw_cfi_ref *, dw_cfi_ref)); | |
71dfc51f RK |
181 | static unsigned long size_of_uleb128 PROTO((unsigned long)); |
182 | static unsigned long size_of_sleb128 PROTO((long)); | |
71dfc51f RK |
183 | static void output_uleb128 PROTO((unsigned long)); |
184 | static void output_sleb128 PROTO((long)); | |
71dfc51f RK |
185 | static void add_fde_cfi PROTO((char *, dw_cfi_ref)); |
186 | static void lookup_cfa_1 PROTO((dw_cfi_ref, unsigned long *, | |
187 | long *)); | |
188 | static void lookup_cfa PROTO((unsigned long *, long *)); | |
189 | static void reg_save PROTO((char *, unsigned, unsigned, | |
190 | long)); | |
191 | static void initial_return_save PROTO((rtx)); | |
71dfc51f | 192 | static void output_cfi PROTO((dw_cfi_ref, dw_fde_ref)); |
3f76745e | 193 | static void output_call_frame_info PROTO((int)); |
71dfc51f | 194 | static unsigned reg_number PROTO((rtx)); |
a3f97cbb JW |
195 | |
196 | /* Definitions of defaults for assembler-dependent names of various | |
197 | pseudo-ops and section names. | |
198 | Theses may be overridden in the tm.h file (if necessary) for a particular | |
199 | assembler. */ | |
71dfc51f | 200 | |
0021b564 | 201 | #ifdef OBJECT_FORMAT_ELF |
a3f97cbb JW |
202 | #ifndef UNALIGNED_SHORT_ASM_OP |
203 | #define UNALIGNED_SHORT_ASM_OP ".2byte" | |
204 | #endif | |
205 | #ifndef UNALIGNED_INT_ASM_OP | |
206 | #define UNALIGNED_INT_ASM_OP ".4byte" | |
207 | #endif | |
7e23cb16 JM |
208 | #ifndef UNALIGNED_DOUBLE_INT_ASM_OP |
209 | #define UNALIGNED_DOUBLE_INT_ASM_OP ".8byte" | |
210 | #endif | |
0021b564 JM |
211 | #endif /* OBJECT_FORMAT_ELF */ |
212 | ||
a3f97cbb JW |
213 | #ifndef ASM_BYTE_OP |
214 | #define ASM_BYTE_OP ".byte" | |
215 | #endif | |
216 | ||
7e23cb16 JM |
217 | /* Data and reference forms for relocatable data. */ |
218 | #define DW_FORM_data (DWARF_OFFSET_SIZE == 8 ? DW_FORM_data8 : DW_FORM_data4) | |
219 | #define DW_FORM_ref (DWARF_OFFSET_SIZE == 8 ? DW_FORM_ref8 : DW_FORM_ref4) | |
220 | ||
a3f97cbb JW |
221 | /* Pseudo-op for defining a new section. */ |
222 | #ifndef SECTION_ASM_OP | |
223 | #define SECTION_ASM_OP ".section" | |
224 | #endif | |
225 | ||
226 | /* The default format used by the ASM_OUTPUT_SECTION macro (see below) to | |
227 | print the SECTION_ASM_OP and the section name. The default here works for | |
228 | almost all svr4 assemblers, except for the sparc, where the section name | |
229 | must be enclosed in double quotes. (See sparcv4.h). */ | |
230 | #ifndef SECTION_FORMAT | |
c53aa195 JM |
231 | #ifdef PUSHSECTION_FORMAT |
232 | #define SECTION_FORMAT PUSHSECTION_FORMAT | |
233 | #else | |
234 | #define SECTION_FORMAT "\t%s\t%s\n" | |
235 | #endif | |
a3f97cbb JW |
236 | #endif |
237 | ||
a3f97cbb JW |
238 | #ifndef FRAME_SECTION |
239 | #define FRAME_SECTION ".debug_frame" | |
240 | #endif | |
a3f97cbb | 241 | |
5c90448c JM |
242 | #ifndef FUNC_BEGIN_LABEL |
243 | #define FUNC_BEGIN_LABEL "LFB" | |
a3f97cbb | 244 | #endif |
5c90448c JM |
245 | #ifndef FUNC_END_LABEL |
246 | #define FUNC_END_LABEL "LFE" | |
a3f97cbb | 247 | #endif |
a6ab3aad JM |
248 | #define CIE_AFTER_SIZE_LABEL "LSCIE" |
249 | #define CIE_END_LABEL "LECIE" | |
2ed2af28 | 250 | #define CIE_LENGTH_LABEL "LLCIE" |
a6ab3aad JM |
251 | #define FDE_AFTER_SIZE_LABEL "LSFDE" |
252 | #define FDE_END_LABEL "LEFDE" | |
2ed2af28 | 253 | #define FDE_LENGTH_LABEL "LLFDE" |
a3f97cbb | 254 | |
a3f97cbb JW |
255 | /* Definitions of defaults for various types of primitive assembly language |
256 | output operations. These may be overridden from within the tm.h file, | |
956d6950 | 257 | but typically, that is unnecessary. */ |
71dfc51f | 258 | |
a3f97cbb JW |
259 | #ifndef ASM_OUTPUT_SECTION |
260 | #define ASM_OUTPUT_SECTION(FILE, SECTION) \ | |
261 | fprintf ((FILE), SECTION_FORMAT, SECTION_ASM_OP, SECTION) | |
262 | #endif | |
263 | ||
0021b564 JM |
264 | #ifndef ASM_OUTPUT_DWARF_DATA1 |
265 | #define ASM_OUTPUT_DWARF_DATA1(FILE,VALUE) \ | |
266 | fprintf ((FILE), "\t%s\t0x%x", ASM_BYTE_OP, VALUE) | |
267 | #endif | |
268 | ||
bb727b5a JM |
269 | #ifndef ASM_OUTPUT_DWARF_DELTA1 |
270 | #define ASM_OUTPUT_DWARF_DELTA1(FILE,LABEL1,LABEL2) \ | |
271 | do { fprintf ((FILE), "\t%s\t", ASM_BYTE_OP); \ | |
272 | assemble_name (FILE, LABEL1); \ | |
273 | fprintf (FILE, "-"); \ | |
274 | assemble_name (FILE, LABEL2); \ | |
275 | } while (0) | |
276 | #endif | |
277 | ||
0021b564 JM |
278 | #ifdef UNALIGNED_INT_ASM_OP |
279 | ||
280 | #ifndef UNALIGNED_OFFSET_ASM_OP | |
281 | #define UNALIGNED_OFFSET_ASM_OP \ | |
282 | (DWARF_OFFSET_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
283 | #endif | |
284 | ||
285 | #ifndef UNALIGNED_WORD_ASM_OP | |
286 | #define UNALIGNED_WORD_ASM_OP \ | |
287 | (PTR_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
288 | #endif | |
289 | ||
a3f97cbb JW |
290 | #ifndef ASM_OUTPUT_DWARF_DELTA2 |
291 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
292 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_SHORT_ASM_OP); \ | |
293 | assemble_name (FILE, LABEL1); \ | |
294 | fprintf (FILE, "-"); \ | |
295 | assemble_name (FILE, LABEL2); \ | |
296 | } while (0) | |
297 | #endif | |
298 | ||
299 | #ifndef ASM_OUTPUT_DWARF_DELTA4 | |
300 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
301 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
302 | assemble_name (FILE, LABEL1); \ | |
303 | fprintf (FILE, "-"); \ | |
304 | assemble_name (FILE, LABEL2); \ | |
305 | } while (0) | |
306 | #endif | |
307 | ||
7e23cb16 JM |
308 | #ifndef ASM_OUTPUT_DWARF_DELTA |
309 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
310 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
311 | assemble_name (FILE, LABEL1); \ | |
312 | fprintf (FILE, "-"); \ | |
313 | assemble_name (FILE, LABEL2); \ | |
314 | } while (0) | |
315 | #endif | |
316 | ||
317 | #ifndef ASM_OUTPUT_DWARF_ADDR_DELTA | |
318 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
319 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ | |
320 | assemble_name (FILE, LABEL1); \ | |
321 | fprintf (FILE, "-"); \ | |
322 | assemble_name (FILE, LABEL2); \ | |
323 | } while (0) | |
324 | #endif | |
325 | ||
a3f97cbb JW |
326 | #ifndef ASM_OUTPUT_DWARF_ADDR |
327 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
7e23cb16 | 328 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ |
a3f97cbb JW |
329 | assemble_name (FILE, LABEL); \ |
330 | } while (0) | |
331 | #endif | |
332 | ||
333 | #ifndef ASM_OUTPUT_DWARF_ADDR_CONST | |
334 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,ADDR) \ | |
7e23cb16 JM |
335 | fprintf ((FILE), "\t%s\t%s", UNALIGNED_WORD_ASM_OP, (ADDR)) |
336 | #endif | |
337 | ||
7bb9fb0e JM |
338 | #ifndef ASM_OUTPUT_DWARF_OFFSET4 |
339 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ | |
340 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
341 | assemble_name (FILE, LABEL); \ | |
342 | } while (0) | |
343 | #endif | |
344 | ||
7e23cb16 JM |
345 | #ifndef ASM_OUTPUT_DWARF_OFFSET |
346 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ | |
347 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
348 | assemble_name (FILE, LABEL); \ | |
349 | } while (0) | |
a3f97cbb JW |
350 | #endif |
351 | ||
a3f97cbb JW |
352 | #ifndef ASM_OUTPUT_DWARF_DATA2 |
353 | #define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \ | |
354 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_SHORT_ASM_OP, (unsigned) VALUE) | |
355 | #endif | |
356 | ||
357 | #ifndef ASM_OUTPUT_DWARF_DATA4 | |
358 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
359 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, (unsigned) VALUE) | |
360 | #endif | |
361 | ||
7e23cb16 JM |
362 | #ifndef ASM_OUTPUT_DWARF_DATA |
363 | #define ASM_OUTPUT_DWARF_DATA(FILE,VALUE) \ | |
364 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_OFFSET_ASM_OP, \ | |
365 | (unsigned long) VALUE) | |
366 | #endif | |
367 | ||
368 | #ifndef ASM_OUTPUT_DWARF_ADDR_DATA | |
369 | #define ASM_OUTPUT_DWARF_ADDR_DATA(FILE,VALUE) \ | |
370 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_WORD_ASM_OP, \ | |
371 | (unsigned long) VALUE) | |
372 | #endif | |
373 | ||
a3f97cbb JW |
374 | #ifndef ASM_OUTPUT_DWARF_DATA8 |
375 | #define ASM_OUTPUT_DWARF_DATA8(FILE,HIGH_VALUE,LOW_VALUE) \ | |
376 | do { \ | |
377 | if (WORDS_BIG_ENDIAN) \ | |
378 | { \ | |
379 | fprintf ((FILE), "\t%s\t0x%x\n", UNALIGNED_INT_ASM_OP, HIGH_VALUE); \ | |
380 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, LOW_VALUE);\ | |
381 | } \ | |
382 | else \ | |
383 | { \ | |
384 | fprintf ((FILE), "\t%s\t0x%x\n", UNALIGNED_INT_ASM_OP, LOW_VALUE);\ | |
385 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, HIGH_VALUE); \ | |
386 | } \ | |
387 | } while (0) | |
388 | #endif | |
389 | ||
0021b564 JM |
390 | #else /* UNALIGNED_INT_ASM_OP */ |
391 | ||
392 | /* We don't have unaligned support, let's hope the normal output works for | |
393 | .debug_frame. */ | |
394 | ||
395 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
396 | assemble_integer (gen_rtx (SYMBOL_REF, Pmode, LABEL), PTR_SIZE, 1) | |
397 | ||
7bb9fb0e JM |
398 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ |
399 | assemble_integer (gen_rtx (SYMBOL_REF, SImode, LABEL), 4, 1) | |
400 | ||
0021b564 JM |
401 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ |
402 | assemble_integer (gen_rtx (SYMBOL_REF, SImode, LABEL), 4, 1) | |
403 | ||
404 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
405 | assemble_integer (gen_rtx (MINUS, HImode, \ | |
406 | gen_rtx (SYMBOL_REF, Pmode, LABEL1), \ | |
407 | gen_rtx (SYMBOL_REF, Pmode, LABEL2)), \ | |
408 | 2, 1) | |
409 | ||
410 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
411 | assemble_integer (gen_rtx (MINUS, SImode, \ | |
412 | gen_rtx (SYMBOL_REF, Pmode, LABEL1), \ | |
413 | gen_rtx (SYMBOL_REF, Pmode, LABEL2)), \ | |
414 | 4, 1) | |
415 | ||
416 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
417 | assemble_integer (gen_rtx (MINUS, Pmode, \ | |
418 | gen_rtx (SYMBOL_REF, Pmode, LABEL1), \ | |
419 | gen_rtx (SYMBOL_REF, Pmode, LABEL2)), \ | |
420 | PTR_SIZE, 1) | |
421 | ||
422 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
423 | ASM_OUTPUT_DWARF_DELTA4 (FILE,LABEL1,LABEL2) | |
424 | ||
425 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
426 | assemble_integer (GEN_INT (VALUE), 4, 1) | |
427 | ||
428 | #endif /* UNALIGNED_INT_ASM_OP */ | |
429 | ||
2ed2af28 PDM |
430 | #ifdef SET_ASM_OP |
431 | #ifndef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL | |
7bb9fb0e JM |
432 | #define ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL(FILE, SY, HI, LO) \ |
433 | do { \ | |
434 | fprintf (FILE, "\t%s\t", SET_ASM_OP); \ | |
435 | assemble_name (FILE, SY); \ | |
436 | fputc (',', FILE); \ | |
437 | assemble_name (FILE, HI); \ | |
438 | fputc ('-', FILE); \ | |
439 | assemble_name (FILE, LO); \ | |
440 | } while (0) | |
2ed2af28 PDM |
441 | #endif |
442 | #endif /* SET_ASM_OP */ | |
443 | ||
a6ab3aad | 444 | /* This is similar to the default ASM_OUTPUT_ASCII, except that no trailing |
2ed2af28 | 445 | newline is produced. When flag_debug_asm is asserted, we add commentary |
a6ab3aad JM |
446 | at the end of the line, so we must avoid output of a newline here. */ |
447 | #ifndef ASM_OUTPUT_DWARF_STRING | |
448 | #define ASM_OUTPUT_DWARF_STRING(FILE,P) \ | |
449 | do { \ | |
450 | register int slen = strlen(P); \ | |
451 | register char *p = (P); \ | |
452 | register int i; \ | |
453 | fprintf (FILE, "\t.ascii \""); \ | |
454 | for (i = 0; i < slen; i++) \ | |
455 | { \ | |
456 | register int c = p[i]; \ | |
457 | if (c == '\"' || c == '\\') \ | |
458 | putc ('\\', FILE); \ | |
459 | if (c >= ' ' && c < 0177) \ | |
460 | putc (c, FILE); \ | |
461 | else \ | |
462 | { \ | |
463 | fprintf (FILE, "\\%o", c); \ | |
464 | } \ | |
465 | } \ | |
466 | fprintf (FILE, "\\0\""); \ | |
467 | } \ | |
468 | while (0) | |
469 | #endif | |
470 | ||
c8cc5c4a | 471 | /* The DWARF 2 CFA column which tracks the return address. Normally this |
a94dbf2c JM |
472 | is the column for PC, or the first column after all of the hard |
473 | registers. */ | |
c8cc5c4a | 474 | #ifndef DWARF_FRAME_RETURN_COLUMN |
a94dbf2c JM |
475 | #ifdef PC_REGNUM |
476 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) | |
477 | #else | |
466446b0 | 478 | #define DWARF_FRAME_RETURN_COLUMN FIRST_PSEUDO_REGISTER |
a94dbf2c | 479 | #endif |
c8cc5c4a JM |
480 | #endif |
481 | ||
482 | /* The mapping from gcc register number to DWARF 2 CFA column number. By | |
469ac993 | 483 | default, we just provide columns for all registers. */ |
c8cc5c4a | 484 | #ifndef DWARF_FRAME_REGNUM |
469ac993 | 485 | #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) |
c8cc5c4a | 486 | #endif |
3f76745e | 487 | |
0021b564 JM |
488 | /* Hook used by __throw. */ |
489 | ||
490 | rtx | |
491 | expand_builtin_dwarf_fp_regnum () | |
492 | { | |
493 | return GEN_INT (DWARF_FRAME_REGNUM (HARD_FRAME_POINTER_REGNUM)); | |
494 | } | |
495 | ||
a6ab3aad JM |
496 | /* The offset from the incoming value of %sp to the top of the stack frame |
497 | for the current function. */ | |
498 | #ifndef INCOMING_FRAME_SP_OFFSET | |
499 | #define INCOMING_FRAME_SP_OFFSET 0 | |
500 | #endif | |
501 | ||
71dfc51f | 502 | /* Return a pointer to a copy of the section string name S with all |
a3f97cbb | 503 | attributes stripped off. */ |
71dfc51f RK |
504 | |
505 | static inline char * | |
a3f97cbb | 506 | stripattributes (s) |
71dfc51f | 507 | char *s; |
a3f97cbb | 508 | { |
71dfc51f RK |
509 | char *stripped = xstrdup (s); |
510 | char *p = stripped; | |
511 | ||
a3f97cbb JW |
512 | while (*p && *p != ',') |
513 | p++; | |
71dfc51f | 514 | |
a3f97cbb JW |
515 | *p = '\0'; |
516 | return stripped; | |
517 | } | |
518 | ||
3f76745e | 519 | /* Return the register number described by a given RTL node. */ |
71dfc51f | 520 | |
3f76745e JM |
521 | static unsigned |
522 | reg_number (rtl) | |
523 | register rtx rtl; | |
a3f97cbb | 524 | { |
3f76745e | 525 | register unsigned regno = REGNO (rtl); |
a3f97cbb | 526 | |
3f76745e | 527 | if (regno >= FIRST_PSEUDO_REGISTER) |
a3f97cbb | 528 | { |
3f76745e JM |
529 | warning ("internal regno botch: regno = %d\n", regno); |
530 | regno = 0; | |
531 | } | |
a3f97cbb | 532 | |
3f76745e JM |
533 | regno = DBX_REGISTER_NUMBER (regno); |
534 | return regno; | |
535 | } | |
a3f97cbb | 536 | |
2f3ca9e7 JM |
537 | struct reg_size_range |
538 | { | |
539 | int beg; | |
540 | int end; | |
541 | int size; | |
542 | }; | |
543 | ||
544 | /* Given a register number in REG_TREE, return an rtx for its size in bytes. | |
545 | We do this in kind of a roundabout way, by building up a list of | |
546 | register size ranges and seeing where our register falls in one of those | |
547 | ranges. We need to do it this way because REG_TREE is not a constant, | |
548 | and the target macros were not designed to make this task easy. */ | |
549 | ||
550 | rtx | |
551 | expand_builtin_dwarf_reg_size (reg_tree, target) | |
552 | tree reg_tree; | |
553 | rtx target; | |
554 | { | |
31c8581d | 555 | enum machine_mode mode; |
d1485032 | 556 | int size; |
2f3ca9e7 JM |
557 | struct reg_size_range ranges[5]; |
558 | tree t, t2; | |
559 | ||
d1485032 JM |
560 | int i = 0; |
561 | int n_ranges = 0; | |
562 | int last_size = -1; | |
2f3ca9e7 | 563 | |
d1485032 | 564 | for (; i < FIRST_PSEUDO_REGISTER; ++i) |
2f3ca9e7 | 565 | { |
d1485032 JM |
566 | /* The return address is out of order on the MIPS, and we don't use |
567 | copy_reg for it anyway, so we don't care here how large it is. */ | |
568 | if (DWARF_FRAME_REGNUM (i) == DWARF_FRAME_RETURN_COLUMN) | |
569 | continue; | |
570 | ||
31c8581d JW |
571 | mode = reg_raw_mode[i]; |
572 | /* CCmode is arbitrarily given a size of 4 bytes. It is more useful | |
573 | to use the same size as word_mode, since that reduces the number | |
574 | of ranges we need. It should not matter, since the result should | |
575 | never be used for a condition code register anyways. */ | |
576 | if (mode == CCmode) | |
577 | mode = word_mode; | |
578 | size = GET_MODE_SIZE (mode); | |
579 | ||
d1485032 | 580 | if (size != last_size) |
2f3ca9e7 | 581 | { |
2f3ca9e7 | 582 | ranges[n_ranges].beg = i; |
d1485032 | 583 | ranges[n_ranges].size = last_size = GET_MODE_SIZE (reg_raw_mode[i]); |
2f3ca9e7 | 584 | ++n_ranges; |
3a88cbd1 JL |
585 | if (n_ranges >= 5) |
586 | abort (); | |
2f3ca9e7 | 587 | } |
d1485032 | 588 | ranges[n_ranges-1].end = i; |
2f3ca9e7 | 589 | } |
2f3ca9e7 JM |
590 | |
591 | /* The usual case: fp regs surrounded by general regs. */ | |
592 | if (n_ranges == 3 && ranges[0].size == ranges[2].size) | |
593 | { | |
3a88cbd1 JL |
594 | if ((DWARF_FRAME_REGNUM (ranges[1].end) |
595 | - DWARF_FRAME_REGNUM (ranges[1].beg)) | |
596 | != ranges[1].end - ranges[1].beg) | |
597 | abort (); | |
2f3ca9e7 JM |
598 | t = fold (build (GE_EXPR, integer_type_node, reg_tree, |
599 | build_int_2 (DWARF_FRAME_REGNUM (ranges[1].beg), 0))); | |
600 | t2 = fold (build (LE_EXPR, integer_type_node, reg_tree, | |
601 | build_int_2 (DWARF_FRAME_REGNUM (ranges[1].end), 0))); | |
602 | t = fold (build (TRUTH_ANDIF_EXPR, integer_type_node, t, t2)); | |
603 | t = fold (build (COND_EXPR, integer_type_node, t, | |
604 | build_int_2 (ranges[1].size, 0), | |
605 | build_int_2 (ranges[0].size, 0))); | |
606 | } | |
607 | else | |
608 | { | |
609 | --n_ranges; | |
610 | t = build_int_2 (ranges[n_ranges].size, 0); | |
611 | size = DWARF_FRAME_REGNUM (ranges[n_ranges].beg); | |
612 | for (; n_ranges--; ) | |
613 | { | |
3a88cbd1 JL |
614 | if ((DWARF_FRAME_REGNUM (ranges[n_ranges].end) |
615 | - DWARF_FRAME_REGNUM (ranges[n_ranges].beg)) | |
616 | != ranges[n_ranges].end - ranges[n_ranges].beg) | |
617 | abort (); | |
618 | if (DWARF_FRAME_REGNUM (ranges[n_ranges].beg) >= size) | |
619 | abort (); | |
2f3ca9e7 JM |
620 | size = DWARF_FRAME_REGNUM (ranges[n_ranges].beg); |
621 | t2 = fold (build (LE_EXPR, integer_type_node, reg_tree, | |
622 | build_int_2 (DWARF_FRAME_REGNUM | |
623 | (ranges[n_ranges].end), 0))); | |
624 | t = fold (build (COND_EXPR, integer_type_node, t2, | |
625 | build_int_2 (ranges[n_ranges].size, 0), t)); | |
626 | } | |
627 | } | |
628 | return expand_expr (t, target, Pmode, 0); | |
629 | } | |
630 | ||
3f76745e | 631 | /* Convert a DWARF call frame info. operation to its string name */ |
a3f97cbb | 632 | |
3f76745e JM |
633 | static char * |
634 | dwarf_cfi_name (cfi_opc) | |
635 | register unsigned cfi_opc; | |
636 | { | |
637 | switch (cfi_opc) | |
638 | { | |
639 | case DW_CFA_advance_loc: | |
640 | return "DW_CFA_advance_loc"; | |
641 | case DW_CFA_offset: | |
642 | return "DW_CFA_offset"; | |
643 | case DW_CFA_restore: | |
644 | return "DW_CFA_restore"; | |
645 | case DW_CFA_nop: | |
646 | return "DW_CFA_nop"; | |
647 | case DW_CFA_set_loc: | |
648 | return "DW_CFA_set_loc"; | |
649 | case DW_CFA_advance_loc1: | |
650 | return "DW_CFA_advance_loc1"; | |
651 | case DW_CFA_advance_loc2: | |
652 | return "DW_CFA_advance_loc2"; | |
653 | case DW_CFA_advance_loc4: | |
654 | return "DW_CFA_advance_loc4"; | |
655 | case DW_CFA_offset_extended: | |
656 | return "DW_CFA_offset_extended"; | |
657 | case DW_CFA_restore_extended: | |
658 | return "DW_CFA_restore_extended"; | |
659 | case DW_CFA_undefined: | |
660 | return "DW_CFA_undefined"; | |
661 | case DW_CFA_same_value: | |
662 | return "DW_CFA_same_value"; | |
663 | case DW_CFA_register: | |
664 | return "DW_CFA_register"; | |
665 | case DW_CFA_remember_state: | |
666 | return "DW_CFA_remember_state"; | |
667 | case DW_CFA_restore_state: | |
668 | return "DW_CFA_restore_state"; | |
669 | case DW_CFA_def_cfa: | |
670 | return "DW_CFA_def_cfa"; | |
671 | case DW_CFA_def_cfa_register: | |
672 | return "DW_CFA_def_cfa_register"; | |
673 | case DW_CFA_def_cfa_offset: | |
674 | return "DW_CFA_def_cfa_offset"; | |
c53aa195 | 675 | |
3f76745e JM |
676 | /* SGI/MIPS specific */ |
677 | case DW_CFA_MIPS_advance_loc8: | |
678 | return "DW_CFA_MIPS_advance_loc8"; | |
c53aa195 JM |
679 | |
680 | /* GNU extensions */ | |
681 | case DW_CFA_GNU_window_save: | |
682 | return "DW_CFA_GNU_window_save"; | |
0021b564 JM |
683 | case DW_CFA_GNU_args_size: |
684 | return "DW_CFA_GNU_args_size"; | |
c53aa195 | 685 | |
3f76745e JM |
686 | default: |
687 | return "DW_CFA_<unknown>"; | |
688 | } | |
689 | } | |
a3f97cbb | 690 | |
3f76745e | 691 | /* Return a pointer to a newly allocated Call Frame Instruction. */ |
71dfc51f | 692 | |
3f76745e JM |
693 | static inline dw_cfi_ref |
694 | new_cfi () | |
695 | { | |
696 | register dw_cfi_ref cfi = (dw_cfi_ref) xmalloc (sizeof (dw_cfi_node)); | |
71dfc51f | 697 | |
3f76745e JM |
698 | cfi->dw_cfi_next = NULL; |
699 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = 0; | |
700 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = 0; | |
a3f97cbb | 701 | |
3f76745e JM |
702 | return cfi; |
703 | } | |
a3f97cbb | 704 | |
3f76745e | 705 | /* Add a Call Frame Instruction to list of instructions. */ |
a3f97cbb | 706 | |
3f76745e JM |
707 | static inline void |
708 | add_cfi (list_head, cfi) | |
709 | register dw_cfi_ref *list_head; | |
710 | register dw_cfi_ref cfi; | |
711 | { | |
712 | register dw_cfi_ref *p; | |
a3f97cbb | 713 | |
3f76745e JM |
714 | /* Find the end of the chain. */ |
715 | for (p = list_head; (*p) != NULL; p = &(*p)->dw_cfi_next) | |
716 | ; | |
717 | ||
718 | *p = cfi; | |
a3f97cbb JW |
719 | } |
720 | ||
3f76745e | 721 | /* Generate a new label for the CFI info to refer to. */ |
71dfc51f | 722 | |
c53aa195 | 723 | char * |
3f76745e | 724 | dwarf2out_cfi_label () |
a3f97cbb | 725 | { |
3f76745e JM |
726 | static char label[20]; |
727 | static unsigned long label_num = 0; | |
728 | ||
729 | ASM_GENERATE_INTERNAL_LABEL (label, "LCFI", label_num++); | |
730 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
731 | ||
732 | return label; | |
a3f97cbb JW |
733 | } |
734 | ||
3f76745e JM |
735 | /* Add CFI to the current fde at the PC value indicated by LABEL if specified, |
736 | or to the CIE if LABEL is NULL. */ | |
71dfc51f | 737 | |
3f76745e JM |
738 | static void |
739 | add_fde_cfi (label, cfi) | |
740 | register char *label; | |
741 | register dw_cfi_ref cfi; | |
a3f97cbb | 742 | { |
3f76745e JM |
743 | if (label) |
744 | { | |
745 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; | |
a3f97cbb | 746 | |
3f76745e JM |
747 | if (*label == 0) |
748 | label = dwarf2out_cfi_label (); | |
71dfc51f | 749 | |
3f76745e JM |
750 | if (fde->dw_fde_current_label == NULL |
751 | || strcmp (label, fde->dw_fde_current_label) != 0) | |
752 | { | |
753 | register dw_cfi_ref xcfi; | |
a3f97cbb | 754 | |
3f76745e | 755 | fde->dw_fde_current_label = label = xstrdup (label); |
71dfc51f | 756 | |
3f76745e JM |
757 | /* Set the location counter to the new label. */ |
758 | xcfi = new_cfi (); | |
759 | xcfi->dw_cfi_opc = DW_CFA_advance_loc4; | |
760 | xcfi->dw_cfi_oprnd1.dw_cfi_addr = label; | |
761 | add_cfi (&fde->dw_fde_cfi, xcfi); | |
762 | } | |
71dfc51f | 763 | |
3f76745e JM |
764 | add_cfi (&fde->dw_fde_cfi, cfi); |
765 | } | |
766 | ||
767 | else | |
768 | add_cfi (&cie_cfi_head, cfi); | |
a3f97cbb JW |
769 | } |
770 | ||
3f76745e | 771 | /* Subroutine of lookup_cfa. */ |
71dfc51f | 772 | |
3f76745e JM |
773 | static inline void |
774 | lookup_cfa_1 (cfi, regp, offsetp) | |
775 | register dw_cfi_ref cfi; | |
776 | register unsigned long *regp; | |
777 | register long *offsetp; | |
a3f97cbb | 778 | { |
3f76745e JM |
779 | switch (cfi->dw_cfi_opc) |
780 | { | |
781 | case DW_CFA_def_cfa_offset: | |
782 | *offsetp = cfi->dw_cfi_oprnd1.dw_cfi_offset; | |
783 | break; | |
784 | case DW_CFA_def_cfa_register: | |
785 | *regp = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; | |
786 | break; | |
787 | case DW_CFA_def_cfa: | |
788 | *regp = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; | |
789 | *offsetp = cfi->dw_cfi_oprnd2.dw_cfi_offset; | |
790 | break; | |
e9a25f70 JL |
791 | default: |
792 | break; | |
3f76745e | 793 | } |
a3f97cbb JW |
794 | } |
795 | ||
3f76745e | 796 | /* Find the previous value for the CFA. */ |
71dfc51f | 797 | |
3f76745e JM |
798 | static void |
799 | lookup_cfa (regp, offsetp) | |
800 | register unsigned long *regp; | |
801 | register long *offsetp; | |
a3f97cbb | 802 | { |
3f76745e JM |
803 | register dw_cfi_ref cfi; |
804 | ||
805 | *regp = (unsigned long) -1; | |
806 | *offsetp = 0; | |
807 | ||
808 | for (cfi = cie_cfi_head; cfi; cfi = cfi->dw_cfi_next) | |
809 | lookup_cfa_1 (cfi, regp, offsetp); | |
810 | ||
811 | if (fde_table_in_use) | |
a3f97cbb | 812 | { |
3f76745e JM |
813 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; |
814 | for (cfi = fde->dw_fde_cfi; cfi; cfi = cfi->dw_cfi_next) | |
815 | lookup_cfa_1 (cfi, regp, offsetp); | |
a3f97cbb JW |
816 | } |
817 | } | |
818 | ||
3f76745e | 819 | /* The current rule for calculating the DWARF2 canonical frame address. */ |
a6ab3aad | 820 | static unsigned long cfa_reg; |
3f76745e | 821 | static long cfa_offset; |
71dfc51f | 822 | |
3f76745e JM |
823 | /* The register used for saving registers to the stack, and its offset |
824 | from the CFA. */ | |
825 | static unsigned cfa_store_reg; | |
826 | static long cfa_store_offset; | |
827 | ||
0021b564 JM |
828 | /* The running total of the size of arguments pushed onto the stack. */ |
829 | static long args_size; | |
830 | ||
3f76745e JM |
831 | /* Entry point to update the canonical frame address (CFA). |
832 | LABEL is passed to add_fde_cfi. The value of CFA is now to be | |
833 | calculated from REG+OFFSET. */ | |
834 | ||
835 | void | |
836 | dwarf2out_def_cfa (label, reg, offset) | |
837 | register char *label; | |
838 | register unsigned reg; | |
839 | register long offset; | |
a3f97cbb | 840 | { |
3f76745e JM |
841 | register dw_cfi_ref cfi; |
842 | unsigned long old_reg; | |
843 | long old_offset; | |
844 | ||
5bef9b1f JM |
845 | cfa_reg = reg; |
846 | cfa_offset = offset; | |
847 | if (cfa_store_reg == reg) | |
848 | cfa_store_offset = offset; | |
849 | ||
3f76745e JM |
850 | reg = DWARF_FRAME_REGNUM (reg); |
851 | lookup_cfa (&old_reg, &old_offset); | |
852 | ||
853 | if (reg == old_reg && offset == old_offset) | |
854 | return; | |
855 | ||
856 | cfi = new_cfi (); | |
857 | ||
858 | if (reg == old_reg) | |
a3f97cbb | 859 | { |
3f76745e JM |
860 | cfi->dw_cfi_opc = DW_CFA_def_cfa_offset; |
861 | cfi->dw_cfi_oprnd1.dw_cfi_offset = offset; | |
862 | } | |
a3f97cbb | 863 | |
3f76745e JM |
864 | #ifndef MIPS_DEBUGGING_INFO /* SGI dbx thinks this means no offset. */ |
865 | else if (offset == old_offset && old_reg != (unsigned long) -1) | |
866 | { | |
867 | cfi->dw_cfi_opc = DW_CFA_def_cfa_register; | |
868 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
869 | } | |
870 | #endif | |
a3f97cbb | 871 | |
3f76745e JM |
872 | else |
873 | { | |
874 | cfi->dw_cfi_opc = DW_CFA_def_cfa; | |
875 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
876 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; | |
a3f97cbb | 877 | } |
3f76745e JM |
878 | |
879 | add_fde_cfi (label, cfi); | |
a3f97cbb JW |
880 | } |
881 | ||
3f76745e JM |
882 | /* Add the CFI for saving a register. REG is the CFA column number. |
883 | LABEL is passed to add_fde_cfi. | |
884 | If SREG is -1, the register is saved at OFFSET from the CFA; | |
885 | otherwise it is saved in SREG. */ | |
71dfc51f | 886 | |
3f76745e JM |
887 | static void |
888 | reg_save (label, reg, sreg, offset) | |
889 | register char * label; | |
890 | register unsigned reg; | |
891 | register unsigned sreg; | |
892 | register long offset; | |
a3f97cbb | 893 | { |
3f76745e JM |
894 | register dw_cfi_ref cfi = new_cfi (); |
895 | ||
896 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
897 | ||
898 | if (sreg == -1) | |
a3f97cbb | 899 | { |
3f76745e JM |
900 | if (reg & ~0x3f) |
901 | /* The register number won't fit in 6 bits, so we have to use | |
902 | the long form. */ | |
903 | cfi->dw_cfi_opc = DW_CFA_offset_extended; | |
904 | else | |
905 | cfi->dw_cfi_opc = DW_CFA_offset; | |
906 | ||
907 | offset /= DWARF_CIE_DATA_ALIGNMENT; | |
3a88cbd1 JL |
908 | if (offset < 0) |
909 | abort (); | |
3f76745e JM |
910 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; |
911 | } | |
912 | else | |
913 | { | |
914 | cfi->dw_cfi_opc = DW_CFA_register; | |
915 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = sreg; | |
916 | } | |
917 | ||
918 | add_fde_cfi (label, cfi); | |
919 | } | |
920 | ||
c53aa195 JM |
921 | /* Add the CFI for saving a register window. LABEL is passed to reg_save. |
922 | This CFI tells the unwinder that it needs to restore the window registers | |
923 | from the previous frame's window save area. | |
924 | ||
925 | ??? Perhaps we should note in the CIE where windows are saved (instead of | |
926 | assuming 0(cfa)) and what registers are in the window. */ | |
927 | ||
928 | void | |
929 | dwarf2out_window_save (label) | |
930 | register char * label; | |
931 | { | |
932 | register dw_cfi_ref cfi = new_cfi (); | |
933 | cfi->dw_cfi_opc = DW_CFA_GNU_window_save; | |
934 | add_fde_cfi (label, cfi); | |
935 | } | |
936 | ||
0021b564 JM |
937 | /* Add a CFI to update the running total of the size of arguments |
938 | pushed onto the stack. */ | |
939 | ||
940 | void | |
941 | dwarf2out_args_size (label, size) | |
942 | char *label; | |
943 | long size; | |
944 | { | |
945 | register dw_cfi_ref cfi = new_cfi (); | |
946 | cfi->dw_cfi_opc = DW_CFA_GNU_args_size; | |
947 | cfi->dw_cfi_oprnd1.dw_cfi_offset = size; | |
948 | add_fde_cfi (label, cfi); | |
949 | } | |
950 | ||
c53aa195 JM |
951 | /* Entry point for saving a register to the stack. REG is the GCC register |
952 | number. LABEL and OFFSET are passed to reg_save. */ | |
3f76745e JM |
953 | |
954 | void | |
955 | dwarf2out_reg_save (label, reg, offset) | |
956 | register char * label; | |
957 | register unsigned reg; | |
958 | register long offset; | |
959 | { | |
960 | reg_save (label, DWARF_FRAME_REGNUM (reg), -1, offset); | |
961 | } | |
962 | ||
c53aa195 JM |
963 | /* Entry point for saving the return address in the stack. |
964 | LABEL and OFFSET are passed to reg_save. */ | |
965 | ||
966 | void | |
967 | dwarf2out_return_save (label, offset) | |
968 | register char * label; | |
969 | register long offset; | |
970 | { | |
971 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, -1, offset); | |
972 | } | |
973 | ||
974 | /* Entry point for saving the return address in a register. | |
975 | LABEL and SREG are passed to reg_save. */ | |
976 | ||
977 | void | |
978 | dwarf2out_return_reg (label, sreg) | |
979 | register char * label; | |
980 | register unsigned sreg; | |
981 | { | |
982 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, sreg, 0); | |
983 | } | |
984 | ||
3f76745e JM |
985 | /* Record the initial position of the return address. RTL is |
986 | INCOMING_RETURN_ADDR_RTX. */ | |
987 | ||
988 | static void | |
989 | initial_return_save (rtl) | |
990 | register rtx rtl; | |
991 | { | |
992 | unsigned reg = -1; | |
993 | long offset = 0; | |
994 | ||
995 | switch (GET_CODE (rtl)) | |
996 | { | |
997 | case REG: | |
998 | /* RA is in a register. */ | |
999 | reg = reg_number (rtl); | |
1000 | break; | |
1001 | case MEM: | |
1002 | /* RA is on the stack. */ | |
1003 | rtl = XEXP (rtl, 0); | |
1004 | switch (GET_CODE (rtl)) | |
1005 | { | |
1006 | case REG: | |
3a88cbd1 JL |
1007 | if (REGNO (rtl) != STACK_POINTER_REGNUM) |
1008 | abort (); | |
3f76745e JM |
1009 | offset = 0; |
1010 | break; | |
1011 | case PLUS: | |
3a88cbd1 JL |
1012 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
1013 | abort (); | |
3f76745e JM |
1014 | offset = INTVAL (XEXP (rtl, 1)); |
1015 | break; | |
1016 | case MINUS: | |
3a88cbd1 JL |
1017 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
1018 | abort (); | |
3f76745e JM |
1019 | offset = -INTVAL (XEXP (rtl, 1)); |
1020 | break; | |
1021 | default: | |
1022 | abort (); | |
1023 | } | |
1024 | break; | |
c53aa195 JM |
1025 | case PLUS: |
1026 | /* The return address is at some offset from any value we can | |
1027 | actually load. For instance, on the SPARC it is in %i7+8. Just | |
1028 | ignore the offset for now; it doesn't matter for unwinding frames. */ | |
3a88cbd1 JL |
1029 | if (GET_CODE (XEXP (rtl, 1)) != CONST_INT) |
1030 | abort (); | |
c53aa195 JM |
1031 | initial_return_save (XEXP (rtl, 0)); |
1032 | return; | |
a3f97cbb | 1033 | default: |
3f76745e | 1034 | abort (); |
a3f97cbb | 1035 | } |
3f76745e | 1036 | |
a6ab3aad | 1037 | reg_save (NULL, DWARF_FRAME_RETURN_COLUMN, reg, offset - cfa_offset); |
a3f97cbb JW |
1038 | } |
1039 | ||
0021b564 JM |
1040 | /* Check INSN to see if it looks like a push or a stack adjustment, and |
1041 | make a note of it if it does. EH uses this information to find out how | |
1042 | much extra space it needs to pop off the stack. */ | |
1043 | ||
1044 | static void | |
1045 | dwarf2out_stack_adjust (insn) | |
1046 | rtx insn; | |
1047 | { | |
0021b564 JM |
1048 | long offset; |
1049 | char *label; | |
1050 | ||
6020d360 | 1051 | if (GET_CODE (insn) == BARRIER) |
0021b564 | 1052 | { |
6020d360 JM |
1053 | /* When we see a BARRIER, we know to reset args_size to 0. Usually |
1054 | the compiler will have already emitted a stack adjustment, but | |
1055 | doesn't bother for calls to noreturn functions. */ | |
1056 | #ifdef STACK_GROWS_DOWNWARD | |
1057 | offset = -args_size; | |
1058 | #else | |
1059 | offset = args_size; | |
1060 | #endif | |
0021b564 | 1061 | } |
6020d360 | 1062 | else if (GET_CODE (PATTERN (insn)) == SET) |
0021b564 | 1063 | { |
6020d360 JM |
1064 | rtx src, dest; |
1065 | enum rtx_code code; | |
1066 | ||
1067 | insn = PATTERN (insn); | |
1068 | src = SET_SRC (insn); | |
1069 | dest = SET_DEST (insn); | |
0021b564 | 1070 | |
6020d360 JM |
1071 | if (dest == stack_pointer_rtx) |
1072 | { | |
1073 | /* (set (reg sp) (plus (reg sp) (const_int))) */ | |
1074 | code = GET_CODE (src); | |
1075 | if (! (code == PLUS || code == MINUS) | |
1076 | || XEXP (src, 0) != stack_pointer_rtx | |
1077 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
1078 | return; | |
1079 | ||
1080 | offset = INTVAL (XEXP (src, 1)); | |
1081 | } | |
1082 | else if (GET_CODE (dest) == MEM) | |
1083 | { | |
1084 | /* (set (mem (pre_dec (reg sp))) (foo)) */ | |
1085 | src = XEXP (dest, 0); | |
1086 | code = GET_CODE (src); | |
1087 | ||
1088 | if (! (code == PRE_DEC || code == PRE_INC) | |
1089 | || XEXP (src, 0) != stack_pointer_rtx) | |
1090 | return; | |
1091 | ||
1092 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1093 | } | |
1094 | else | |
0021b564 JM |
1095 | return; |
1096 | ||
6020d360 JM |
1097 | if (code == PLUS || code == PRE_INC) |
1098 | offset = -offset; | |
0021b564 JM |
1099 | } |
1100 | else | |
1101 | return; | |
1102 | ||
6020d360 JM |
1103 | if (offset == 0) |
1104 | return; | |
1105 | ||
0021b564 JM |
1106 | if (cfa_reg == STACK_POINTER_REGNUM) |
1107 | cfa_offset += offset; | |
1108 | ||
1109 | #ifndef STACK_GROWS_DOWNWARD | |
1110 | offset = -offset; | |
1111 | #endif | |
1112 | args_size += offset; | |
1113 | if (args_size < 0) | |
1114 | args_size = 0; | |
1115 | ||
1116 | label = dwarf2out_cfi_label (); | |
1117 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1118 | dwarf2out_args_size (label, args_size); | |
1119 | } | |
1120 | ||
3f76745e JM |
1121 | /* Record call frame debugging information for INSN, which either |
1122 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
1123 | register to the stack. If INSN is NULL_RTX, initialize our state. */ | |
71dfc51f | 1124 | |
3f76745e JM |
1125 | void |
1126 | dwarf2out_frame_debug (insn) | |
1127 | rtx insn; | |
a3f97cbb | 1128 | { |
3f76745e JM |
1129 | char *label; |
1130 | rtx src, dest; | |
1131 | long offset; | |
1132 | ||
1133 | /* A temporary register used in adjusting SP or setting up the store_reg. */ | |
1134 | static unsigned cfa_temp_reg; | |
1135 | static long cfa_temp_value; | |
1136 | ||
1137 | if (insn == NULL_RTX) | |
a3f97cbb | 1138 | { |
3f76745e | 1139 | /* Set up state for generating call frame debug info. */ |
a6ab3aad | 1140 | lookup_cfa (&cfa_reg, &cfa_offset); |
3a88cbd1 JL |
1141 | if (cfa_reg != DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM)) |
1142 | abort (); | |
3f76745e | 1143 | cfa_reg = STACK_POINTER_REGNUM; |
a6ab3aad JM |
1144 | cfa_store_reg = cfa_reg; |
1145 | cfa_store_offset = cfa_offset; | |
3f76745e JM |
1146 | cfa_temp_reg = -1; |
1147 | cfa_temp_value = 0; | |
1148 | return; | |
1149 | } | |
1150 | ||
0021b564 JM |
1151 | if (! RTX_FRAME_RELATED_P (insn)) |
1152 | { | |
6020d360 | 1153 | dwarf2out_stack_adjust (insn); |
0021b564 JM |
1154 | return; |
1155 | } | |
1156 | ||
3f76745e JM |
1157 | label = dwarf2out_cfi_label (); |
1158 | ||
1159 | insn = PATTERN (insn); | |
267c09ab JM |
1160 | /* Assume that in a PARALLEL prologue insn, only the first elt is |
1161 | significant. Currently this is true. */ | |
1162 | if (GET_CODE (insn) == PARALLEL) | |
1163 | insn = XVECEXP (insn, 0, 0); | |
3a88cbd1 JL |
1164 | if (GET_CODE (insn) != SET) |
1165 | abort (); | |
3f76745e JM |
1166 | |
1167 | src = SET_SRC (insn); | |
1168 | dest = SET_DEST (insn); | |
1169 | ||
1170 | switch (GET_CODE (dest)) | |
1171 | { | |
1172 | case REG: | |
1173 | /* Update the CFA rule wrt SP or FP. Make sure src is | |
1174 | relative to the current CFA register. */ | |
1175 | switch (GET_CODE (src)) | |
1176 | { | |
1177 | /* Setting FP from SP. */ | |
1178 | case REG: | |
3a88cbd1 JL |
1179 | if (cfa_reg != REGNO (src)) |
1180 | abort (); | |
1181 | if (REGNO (dest) != STACK_POINTER_REGNUM | |
1182 | && !(frame_pointer_needed | |
1183 | && REGNO (dest) == HARD_FRAME_POINTER_REGNUM)) | |
1184 | abort (); | |
3f76745e JM |
1185 | cfa_reg = REGNO (dest); |
1186 | break; | |
1187 | ||
1188 | case PLUS: | |
1189 | case MINUS: | |
1190 | if (dest == stack_pointer_rtx) | |
1191 | { | |
1192 | /* Adjusting SP. */ | |
1193 | switch (GET_CODE (XEXP (src, 1))) | |
1194 | { | |
1195 | case CONST_INT: | |
1196 | offset = INTVAL (XEXP (src, 1)); | |
1197 | break; | |
1198 | case REG: | |
3a88cbd1 JL |
1199 | if (REGNO (XEXP (src, 1)) != cfa_temp_reg) |
1200 | abort (); | |
3f76745e JM |
1201 | offset = cfa_temp_value; |
1202 | break; | |
1203 | default: | |
1204 | abort (); | |
1205 | } | |
1206 | ||
0021b564 JM |
1207 | if (XEXP (src, 0) == hard_frame_pointer_rtx) |
1208 | { | |
1209 | /* Restoring SP from FP in the epilogue. */ | |
3a88cbd1 JL |
1210 | if (cfa_reg != HARD_FRAME_POINTER_REGNUM) |
1211 | abort (); | |
0021b564 JM |
1212 | cfa_reg = STACK_POINTER_REGNUM; |
1213 | } | |
3a88cbd1 JL |
1214 | else if (XEXP (src, 0) != stack_pointer_rtx) |
1215 | abort (); | |
0021b564 | 1216 | |
3f76745e JM |
1217 | if (GET_CODE (src) == PLUS) |
1218 | offset = -offset; | |
1219 | if (cfa_reg == STACK_POINTER_REGNUM) | |
1220 | cfa_offset += offset; | |
1221 | if (cfa_store_reg == STACK_POINTER_REGNUM) | |
1222 | cfa_store_offset += offset; | |
3f76745e | 1223 | } |
63d96a95 GK |
1224 | else if (dest == hard_frame_pointer_rtx) |
1225 | { | |
1226 | /* Either setting the FP from an offset of the SP, | |
1227 | or adjusting the FP */ | |
1228 | if (! frame_pointer_needed | |
1229 | || REGNO (dest) != HARD_FRAME_POINTER_REGNUM) | |
1230 | abort (); | |
1231 | ||
1232 | if (XEXP (src, 0) == stack_pointer_rtx | |
1233 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
1234 | { | |
1235 | if (cfa_reg != STACK_POINTER_REGNUM) | |
1236 | abort (); | |
1237 | offset = INTVAL (XEXP (src, 1)); | |
1238 | if (GET_CODE (src) == PLUS) | |
1239 | offset = -offset; | |
1240 | cfa_offset += offset; | |
1241 | cfa_reg = HARD_FRAME_POINTER_REGNUM; | |
1242 | } | |
1243 | else if (XEXP (src, 0) == hard_frame_pointer_rtx | |
1244 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
1245 | { | |
1246 | if (cfa_reg != HARD_FRAME_POINTER_REGNUM) | |
1247 | abort (); | |
1248 | offset = INTVAL (XEXP (src, 1)); | |
1249 | if (GET_CODE (src) == PLUS) | |
1250 | offset = -offset; | |
1251 | cfa_offset += offset; | |
1252 | } | |
1253 | ||
1254 | else | |
1255 | abort(); | |
1256 | } | |
3f76745e JM |
1257 | else |
1258 | { | |
3a88cbd1 | 1259 | if (GET_CODE (src) != PLUS |
31d52528 | 1260 | || XEXP (src, 1) != stack_pointer_rtx) |
3a88cbd1 JL |
1261 | abort (); |
1262 | if (GET_CODE (XEXP (src, 0)) != REG | |
1263 | || REGNO (XEXP (src, 0)) != cfa_temp_reg) | |
1264 | abort (); | |
218c2cdb JW |
1265 | if (cfa_reg != STACK_POINTER_REGNUM) |
1266 | abort (); | |
3f76745e | 1267 | cfa_store_reg = REGNO (dest); |
218c2cdb | 1268 | cfa_store_offset = cfa_offset - cfa_temp_value; |
3f76745e JM |
1269 | } |
1270 | break; | |
1271 | ||
1272 | case CONST_INT: | |
1273 | cfa_temp_reg = REGNO (dest); | |
1274 | cfa_temp_value = INTVAL (src); | |
1275 | break; | |
1276 | ||
ef76d03b | 1277 | case IOR: |
3a88cbd1 JL |
1278 | if (GET_CODE (XEXP (src, 0)) != REG |
1279 | || REGNO (XEXP (src, 0)) != cfa_temp_reg | |
1280 | || REGNO (dest) != cfa_temp_reg | |
1281 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
1282 | abort (); | |
ef76d03b JW |
1283 | cfa_temp_value |= INTVAL (XEXP (src, 1)); |
1284 | break; | |
1285 | ||
3f76745e JM |
1286 | default: |
1287 | abort (); | |
1288 | } | |
1289 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1290 | break; | |
1291 | ||
1292 | case MEM: | |
1293 | /* Saving a register to the stack. Make sure dest is relative to the | |
1294 | CFA register. */ | |
3a88cbd1 JL |
1295 | if (GET_CODE (src) != REG) |
1296 | abort (); | |
3f76745e JM |
1297 | switch (GET_CODE (XEXP (dest, 0))) |
1298 | { | |
1299 | /* With a push. */ | |
1300 | case PRE_INC: | |
1301 | case PRE_DEC: | |
1302 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
0021b564 | 1303 | if (GET_CODE (XEXP (dest, 0)) == PRE_INC) |
3f76745e JM |
1304 | offset = -offset; |
1305 | ||
3a88cbd1 JL |
1306 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM |
1307 | || cfa_store_reg != STACK_POINTER_REGNUM) | |
1308 | abort (); | |
3f76745e JM |
1309 | cfa_store_offset += offset; |
1310 | if (cfa_reg == STACK_POINTER_REGNUM) | |
1311 | cfa_offset = cfa_store_offset; | |
1312 | ||
1313 | offset = -cfa_store_offset; | |
1314 | break; | |
1315 | ||
1316 | /* With an offset. */ | |
1317 | case PLUS: | |
1318 | case MINUS: | |
1319 | offset = INTVAL (XEXP (XEXP (dest, 0), 1)); | |
1320 | if (GET_CODE (src) == MINUS) | |
1321 | offset = -offset; | |
1322 | ||
3a88cbd1 JL |
1323 | if (cfa_store_reg != REGNO (XEXP (XEXP (dest, 0), 0))) |
1324 | abort (); | |
3f76745e JM |
1325 | offset -= cfa_store_offset; |
1326 | break; | |
1327 | ||
1328 | default: | |
1329 | abort (); | |
1330 | } | |
1331 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1332 | dwarf2out_reg_save (label, REGNO (src), offset); | |
1333 | break; | |
1334 | ||
1335 | default: | |
1336 | abort (); | |
1337 | } | |
1338 | } | |
1339 | ||
1340 | /* Return the size of an unsigned LEB128 quantity. */ | |
1341 | ||
1342 | static inline unsigned long | |
1343 | size_of_uleb128 (value) | |
1344 | register unsigned long value; | |
1345 | { | |
1346 | register unsigned long size = 0; | |
1347 | register unsigned byte; | |
1348 | ||
1349 | do | |
1350 | { | |
1351 | byte = (value & 0x7f); | |
1352 | value >>= 7; | |
1353 | size += 1; | |
1354 | } | |
1355 | while (value != 0); | |
1356 | ||
1357 | return size; | |
1358 | } | |
1359 | ||
1360 | /* Return the size of a signed LEB128 quantity. */ | |
1361 | ||
1362 | static inline unsigned long | |
1363 | size_of_sleb128 (value) | |
1364 | register long value; | |
1365 | { | |
1366 | register unsigned long size = 0; | |
1367 | register unsigned byte; | |
1368 | ||
1369 | do | |
1370 | { | |
1371 | byte = (value & 0x7f); | |
1372 | value >>= 7; | |
1373 | size += 1; | |
1374 | } | |
1375 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
1376 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1377 | ||
1378 | return size; | |
1379 | } | |
1380 | ||
3f76745e JM |
1381 | /* Output an unsigned LEB128 quantity. */ |
1382 | ||
1383 | static void | |
1384 | output_uleb128 (value) | |
1385 | register unsigned long value; | |
1386 | { | |
1387 | unsigned long save_value = value; | |
1388 | ||
1389 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
1390 | do | |
1391 | { | |
1392 | register unsigned byte = (value & 0x7f); | |
1393 | value >>= 7; | |
1394 | if (value != 0) | |
1395 | /* More bytes to follow. */ | |
1396 | byte |= 0x80; | |
1397 | ||
1398 | fprintf (asm_out_file, "0x%x", byte); | |
1399 | if (value != 0) | |
1400 | fprintf (asm_out_file, ","); | |
1401 | } | |
1402 | while (value != 0); | |
1403 | ||
c5cec899 | 1404 | if (flag_debug_asm) |
3f76745e JM |
1405 | fprintf (asm_out_file, "\t%s ULEB128 0x%x", ASM_COMMENT_START, save_value); |
1406 | } | |
1407 | ||
1408 | /* Output an signed LEB128 quantity. */ | |
1409 | ||
1410 | static void | |
1411 | output_sleb128 (value) | |
1412 | register long value; | |
1413 | { | |
1414 | register int more; | |
1415 | register unsigned byte; | |
1416 | long save_value = value; | |
1417 | ||
1418 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
1419 | do | |
1420 | { | |
1421 | byte = (value & 0x7f); | |
1422 | /* arithmetic shift */ | |
1423 | value >>= 7; | |
1424 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
1425 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1426 | if (more) | |
1427 | byte |= 0x80; | |
1428 | ||
1429 | fprintf (asm_out_file, "0x%x", byte); | |
1430 | if (more) | |
1431 | fprintf (asm_out_file, ","); | |
1432 | } | |
1433 | ||
1434 | while (more); | |
c5cec899 | 1435 | if (flag_debug_asm) |
3f76745e JM |
1436 | fprintf (asm_out_file, "\t%s SLEB128 %d", ASM_COMMENT_START, save_value); |
1437 | } | |
1438 | ||
1439 | /* Output a Call Frame Information opcode and its operand(s). */ | |
1440 | ||
1441 | static void | |
1442 | output_cfi (cfi, fde) | |
1443 | register dw_cfi_ref cfi; | |
1444 | register dw_fde_ref fde; | |
1445 | { | |
1446 | if (cfi->dw_cfi_opc == DW_CFA_advance_loc) | |
1447 | { | |
1448 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1449 | cfi->dw_cfi_opc | |
1450 | | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)); | |
c5cec899 | 1451 | if (flag_debug_asm) |
3f76745e JM |
1452 | fprintf (asm_out_file, "\t%s DW_CFA_advance_loc 0x%x", |
1453 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1454 | fputc ('\n', asm_out_file); | |
1455 | } | |
1456 | ||
1457 | else if (cfi->dw_cfi_opc == DW_CFA_offset) | |
1458 | { | |
1459 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1460 | cfi->dw_cfi_opc | |
1461 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1462 | if (flag_debug_asm) |
3f76745e JM |
1463 | fprintf (asm_out_file, "\t%s DW_CFA_offset, column 0x%x", |
1464 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1465 | ||
1466 | fputc ('\n', asm_out_file); | |
1467 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1468 | fputc ('\n', asm_out_file); | |
1469 | } | |
1470 | else if (cfi->dw_cfi_opc == DW_CFA_restore) | |
1471 | { | |
1472 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1473 | cfi->dw_cfi_opc | |
1474 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1475 | if (flag_debug_asm) |
3f76745e JM |
1476 | fprintf (asm_out_file, "\t%s DW_CFA_restore, column 0x%x", |
1477 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1478 | ||
1479 | fputc ('\n', asm_out_file); | |
1480 | } | |
1481 | else | |
1482 | { | |
1483 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, cfi->dw_cfi_opc); | |
c5cec899 | 1484 | if (flag_debug_asm) |
3f76745e JM |
1485 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
1486 | dwarf_cfi_name (cfi->dw_cfi_opc)); | |
1487 | ||
1488 | fputc ('\n', asm_out_file); | |
1489 | switch (cfi->dw_cfi_opc) | |
1490 | { | |
1491 | case DW_CFA_set_loc: | |
1492 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, cfi->dw_cfi_oprnd1.dw_cfi_addr); | |
1493 | fputc ('\n', asm_out_file); | |
1494 | break; | |
1495 | case DW_CFA_advance_loc1: | |
bb727b5a JM |
1496 | ASM_OUTPUT_DWARF_DELTA1 (asm_out_file, |
1497 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1498 | fde->dw_fde_current_label); | |
1499 | fputc ('\n', asm_out_file); | |
1500 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
3f76745e JM |
1501 | break; |
1502 | case DW_CFA_advance_loc2: | |
1503 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, | |
1504 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1505 | fde->dw_fde_current_label); | |
1506 | fputc ('\n', asm_out_file); | |
1507 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1508 | break; | |
1509 | case DW_CFA_advance_loc4: | |
1510 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, | |
1511 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1512 | fde->dw_fde_current_label); | |
1513 | fputc ('\n', asm_out_file); | |
1514 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1515 | break; | |
1516 | #ifdef MIPS_DEBUGGING_INFO | |
1517 | case DW_CFA_MIPS_advance_loc8: | |
1518 | /* TODO: not currently implemented. */ | |
1519 | abort (); | |
1520 | break; | |
1521 | #endif | |
1522 | case DW_CFA_offset_extended: | |
1523 | case DW_CFA_def_cfa: | |
1524 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1525 | fputc ('\n', asm_out_file); | |
1526 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1527 | fputc ('\n', asm_out_file); | |
1528 | break; | |
1529 | case DW_CFA_restore_extended: | |
1530 | case DW_CFA_undefined: | |
1531 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1532 | fputc ('\n', asm_out_file); | |
1533 | break; | |
1534 | case DW_CFA_same_value: | |
1535 | case DW_CFA_def_cfa_register: | |
1536 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1537 | fputc ('\n', asm_out_file); | |
1538 | break; | |
1539 | case DW_CFA_register: | |
1540 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1541 | fputc ('\n', asm_out_file); | |
1542 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_reg_num); | |
1543 | fputc ('\n', asm_out_file); | |
1544 | break; | |
1545 | case DW_CFA_def_cfa_offset: | |
1546 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1547 | fputc ('\n', asm_out_file); | |
1548 | break; | |
c53aa195 JM |
1549 | case DW_CFA_GNU_window_save: |
1550 | break; | |
0021b564 JM |
1551 | case DW_CFA_GNU_args_size: |
1552 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1553 | fputc ('\n', asm_out_file); | |
1554 | break; | |
3f76745e JM |
1555 | default: |
1556 | break; | |
1557 | } | |
1558 | } | |
1559 | } | |
1560 | ||
0021b564 JM |
1561 | #if !defined (EH_FRAME_SECTION) |
1562 | #if defined (EH_FRAME_SECTION_ASM_OP) | |
1563 | #define EH_FRAME_SECTION() eh_frame_section(); | |
1564 | #else | |
1565 | #if defined (ASM_OUTPUT_SECTION_NAME) | |
1566 | #define EH_FRAME_SECTION() \ | |
1567 | do { \ | |
1568 | named_section (NULL_TREE, ".eh_frame", 0); \ | |
1569 | } while (0) | |
1570 | #endif | |
1571 | #endif | |
1572 | #endif | |
1573 | ||
3f76745e JM |
1574 | /* Output the call frame information used to used to record information |
1575 | that relates to calculating the frame pointer, and records the | |
1576 | location of saved registers. */ | |
1577 | ||
1578 | static void | |
1579 | output_call_frame_info (for_eh) | |
1580 | int for_eh; | |
1581 | { | |
1582 | register unsigned long i, j; | |
1583 | register dw_fde_ref fde; | |
1584 | register unsigned long fde_size; | |
1585 | register dw_cfi_ref cfi; | |
1586 | unsigned long fde_pad; | |
a6ab3aad | 1587 | char l1[20], l2[20]; |
2ed2af28 PDM |
1588 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1589 | char ld[20]; | |
1590 | #endif | |
a6ab3aad JM |
1591 | |
1592 | /* Do we want to include a pointer to the exception table? */ | |
1593 | int eh_ptr = for_eh && exception_table_p (); | |
3f76745e | 1594 | |
3f76745e | 1595 | fputc ('\n', asm_out_file); |
e9e30253 | 1596 | |
aa0c1401 JL |
1597 | /* We're going to be generating comments, so turn on app. */ |
1598 | if (flag_debug_asm) | |
1599 | app_enable (); | |
956d6950 | 1600 | |
3f76745e JM |
1601 | if (for_eh) |
1602 | { | |
1603 | #ifdef EH_FRAME_SECTION | |
0021b564 | 1604 | EH_FRAME_SECTION (); |
3f76745e | 1605 | #else |
496651db | 1606 | tree label = get_file_function_name ('F'); |
0021b564 | 1607 | |
3f76745e | 1608 | data_section (); |
f4744807 | 1609 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); |
0021b564 JM |
1610 | ASM_GLOBALIZE_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); |
1611 | ASM_OUTPUT_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); | |
3f76745e JM |
1612 | #endif |
1613 | assemble_label ("__FRAME_BEGIN__"); | |
1614 | } | |
1615 | else | |
1616 | ASM_OUTPUT_SECTION (asm_out_file, FRAME_SECTION); | |
1617 | ||
1618 | /* Output the CIE. */ | |
a6ab3aad JM |
1619 | ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh); |
1620 | ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh); | |
2ed2af28 PDM |
1621 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1622 | ASM_GENERATE_INTERNAL_LABEL (ld, CIE_LENGTH_LABEL, for_eh); | |
1623 | if (for_eh) | |
7bb9fb0e | 1624 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1625 | else |
1626 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1627 | #else | |
267c09ab JM |
1628 | if (for_eh) |
1629 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1630 | else | |
1631 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1632 | #endif |
c5cec899 | 1633 | if (flag_debug_asm) |
3f76745e JM |
1634 | fprintf (asm_out_file, "\t%s Length of Common Information Entry", |
1635 | ASM_COMMENT_START); | |
1636 | ||
1637 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1638 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1639 | ||
d84e64d4 JM |
1640 | if (for_eh) |
1641 | /* Now that the CIE pointer is PC-relative for EH, | |
1642 | use 0 to identify the CIE. */ | |
1643 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); | |
1644 | else | |
1645 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1646 | ||
c5cec899 | 1647 | if (flag_debug_asm) |
3f76745e JM |
1648 | fprintf (asm_out_file, "\t%s CIE Identifier Tag", ASM_COMMENT_START); |
1649 | ||
1650 | fputc ('\n', asm_out_file); | |
d84e64d4 | 1651 | if (! for_eh && DWARF_OFFSET_SIZE == 8) |
3f76745e JM |
1652 | { |
1653 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1654 | fputc ('\n', asm_out_file); | |
1655 | } | |
1656 | ||
1657 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_CIE_VERSION); | |
c5cec899 | 1658 | if (flag_debug_asm) |
3f76745e JM |
1659 | fprintf (asm_out_file, "\t%s CIE Version", ASM_COMMENT_START); |
1660 | ||
1661 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1662 | if (eh_ptr) |
1663 | { | |
d84e64d4 JM |
1664 | /* The CIE contains a pointer to the exception region info for the |
1665 | frame. Make the augmentation string three bytes (including the | |
1666 | trailing null) so the pointer is 4-byte aligned. The Solaris ld | |
1667 | can't handle unaligned relocs. */ | |
c5cec899 | 1668 | if (flag_debug_asm) |
8d4e65a6 JL |
1669 | { |
1670 | ASM_OUTPUT_DWARF_STRING (asm_out_file, "eh"); | |
1671 | fprintf (asm_out_file, "\t%s CIE Augmentation", ASM_COMMENT_START); | |
1672 | } | |
1673 | else | |
1674 | { | |
c2c85462 | 1675 | ASM_OUTPUT_ASCII (asm_out_file, "eh", 3); |
8d4e65a6 | 1676 | } |
d84e64d4 JM |
1677 | fputc ('\n', asm_out_file); |
1678 | ||
1679 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, "__EXCEPTION_TABLE__"); | |
1680 | if (flag_debug_asm) | |
1681 | fprintf (asm_out_file, "\t%s pointer to exception region info", | |
1682 | ASM_COMMENT_START); | |
a6ab3aad JM |
1683 | } |
1684 | else | |
1685 | { | |
1686 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 1687 | if (flag_debug_asm) |
a6ab3aad JM |
1688 | fprintf (asm_out_file, "\t%s CIE Augmentation (none)", |
1689 | ASM_COMMENT_START); | |
1690 | } | |
3f76745e JM |
1691 | |
1692 | fputc ('\n', asm_out_file); | |
1693 | output_uleb128 (1); | |
c5cec899 | 1694 | if (flag_debug_asm) |
3f76745e JM |
1695 | fprintf (asm_out_file, " (CIE Code Alignment Factor)"); |
1696 | ||
1697 | fputc ('\n', asm_out_file); | |
1698 | output_sleb128 (DWARF_CIE_DATA_ALIGNMENT); | |
c5cec899 | 1699 | if (flag_debug_asm) |
3f76745e JM |
1700 | fprintf (asm_out_file, " (CIE Data Alignment Factor)"); |
1701 | ||
1702 | fputc ('\n', asm_out_file); | |
1703 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_FRAME_RETURN_COLUMN); | |
c5cec899 | 1704 | if (flag_debug_asm) |
3f76745e JM |
1705 | fprintf (asm_out_file, "\t%s CIE RA Column", ASM_COMMENT_START); |
1706 | ||
1707 | fputc ('\n', asm_out_file); | |
1708 | ||
1709 | for (cfi = cie_cfi_head; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1710 | output_cfi (cfi, NULL); | |
1711 | ||
1712 | /* Pad the CIE out to an address sized boundary. */ | |
a6ab3aad JM |
1713 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); |
1714 | ASM_OUTPUT_LABEL (asm_out_file, l2); | |
2ed2af28 PDM |
1715 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1716 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1717 | if (flag_debug_asm) |
1718 | fprintf (asm_out_file, "\t%s CIE Length Symbol", ASM_COMMENT_START); | |
1719 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1720 | #endif |
3f76745e JM |
1721 | |
1722 | /* Loop through all of the FDE's. */ | |
1723 | for (i = 0; i < fde_table_in_use; ++i) | |
1724 | { | |
1725 | fde = &fde_table[i]; | |
3f76745e | 1726 | |
a6ab3aad JM |
1727 | ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i*2); |
1728 | ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i*2); | |
2ed2af28 PDM |
1729 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1730 | ASM_GENERATE_INTERNAL_LABEL (ld, FDE_LENGTH_LABEL, for_eh + i*2); | |
1731 | if (for_eh) | |
7bb9fb0e | 1732 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1733 | else |
1734 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1735 | #else | |
267c09ab JM |
1736 | if (for_eh) |
1737 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1738 | else | |
1739 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1740 | #endif |
c5cec899 | 1741 | if (flag_debug_asm) |
3f76745e | 1742 | fprintf (asm_out_file, "\t%s FDE Length", ASM_COMMENT_START); |
3f76745e | 1743 | fputc ('\n', asm_out_file); |
a6ab3aad JM |
1744 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1745 | ||
3f76745e | 1746 | if (for_eh) |
ede19932 | 1747 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l1, "__FRAME_BEGIN__"); |
3f76745e JM |
1748 | else |
1749 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (FRAME_SECTION)); | |
c5cec899 | 1750 | if (flag_debug_asm) |
3f76745e JM |
1751 | fprintf (asm_out_file, "\t%s FDE CIE offset", ASM_COMMENT_START); |
1752 | ||
1753 | fputc ('\n', asm_out_file); | |
1754 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, fde->dw_fde_begin); | |
c5cec899 | 1755 | if (flag_debug_asm) |
3f76745e JM |
1756 | fprintf (asm_out_file, "\t%s FDE initial location", ASM_COMMENT_START); |
1757 | ||
1758 | fputc ('\n', asm_out_file); | |
1759 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, | |
1760 | fde->dw_fde_end, fde->dw_fde_begin); | |
c5cec899 | 1761 | if (flag_debug_asm) |
3f76745e JM |
1762 | fprintf (asm_out_file, "\t%s FDE address range", ASM_COMMENT_START); |
1763 | ||
1764 | fputc ('\n', asm_out_file); | |
1765 | ||
1766 | /* Loop through the Call Frame Instructions associated with | |
1767 | this FDE. */ | |
1768 | fde->dw_fde_current_label = fde->dw_fde_begin; | |
1769 | for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1770 | output_cfi (cfi, fde); | |
1771 | ||
a6ab3aad JM |
1772 | /* Pad the FDE out to an address sized boundary. */ |
1773 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); | |
1774 | ASM_OUTPUT_LABEL (asm_out_file, l2); | |
2ed2af28 PDM |
1775 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1776 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1777 | if (flag_debug_asm) |
1778 | fprintf (asm_out_file, "\t%s FDE Length Symbol", ASM_COMMENT_START); | |
1779 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1780 | #endif |
3f76745e JM |
1781 | } |
1782 | #ifndef EH_FRAME_SECTION | |
1783 | if (for_eh) | |
1784 | { | |
1785 | /* Emit terminating zero for table. */ | |
267c09ab | 1786 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); |
3f76745e JM |
1787 | fputc ('\n', asm_out_file); |
1788 | } | |
1789 | #endif | |
a6ab3aad JM |
1790 | #ifdef MIPS_DEBUGGING_INFO |
1791 | /* Work around Irix 6 assembler bug whereby labels at the end of a section | |
1792 | get a value of 0. Putting .align 0 after the label fixes it. */ | |
1793 | ASM_OUTPUT_ALIGN (asm_out_file, 0); | |
1794 | #endif | |
aa0c1401 JL |
1795 | |
1796 | /* Turn off app to make assembly quicker. */ | |
1797 | if (flag_debug_asm) | |
1798 | app_disable (); | |
a6ab3aad JM |
1799 | } |
1800 | ||
3f76745e JM |
1801 | /* Output a marker (i.e. a label) for the beginning of a function, before |
1802 | the prologue. */ | |
1803 | ||
1804 | void | |
1805 | dwarf2out_begin_prologue () | |
1806 | { | |
1807 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
1808 | register dw_fde_ref fde; | |
1809 | ||
4f988ea2 JM |
1810 | ++current_funcdef_number; |
1811 | ||
3f76745e JM |
1812 | function_section (current_function_decl); |
1813 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL, | |
1814 | current_funcdef_number); | |
1815 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
1816 | ||
1817 | /* Expand the fde table if necessary. */ | |
1818 | if (fde_table_in_use == fde_table_allocated) | |
1819 | { | |
1820 | fde_table_allocated += FDE_TABLE_INCREMENT; | |
1821 | fde_table | |
1822 | = (dw_fde_ref) xrealloc (fde_table, | |
1823 | fde_table_allocated * sizeof (dw_fde_node)); | |
a3f97cbb | 1824 | } |
3f76745e JM |
1825 | |
1826 | /* Record the FDE associated with this function. */ | |
1827 | current_funcdef_fde = fde_table_in_use; | |
1828 | ||
1829 | /* Add the new FDE at the end of the fde_table. */ | |
1830 | fde = &fde_table[fde_table_in_use++]; | |
1831 | fde->dw_fde_begin = xstrdup (label); | |
1832 | fde->dw_fde_current_label = NULL; | |
1833 | fde->dw_fde_end = NULL; | |
1834 | fde->dw_fde_cfi = NULL; | |
0021b564 JM |
1835 | |
1836 | args_size = 0; | |
3f76745e JM |
1837 | } |
1838 | ||
1839 | /* Output a marker (i.e. a label) for the absolute end of the generated code | |
1840 | for a function definition. This gets called *after* the epilogue code has | |
1841 | been generated. */ | |
1842 | ||
1843 | void | |
1844 | dwarf2out_end_epilogue () | |
1845 | { | |
1846 | dw_fde_ref fde; | |
1847 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
1848 | ||
1849 | /* Output a label to mark the endpoint of the code generated for this | |
1850 | function. */ | |
1851 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_END_LABEL, current_funcdef_number); | |
1852 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
1853 | fde = &fde_table[fde_table_in_use - 1]; | |
1854 | fde->dw_fde_end = xstrdup (label); | |
3f76745e JM |
1855 | } |
1856 | ||
1857 | void | |
1858 | dwarf2out_frame_init () | |
1859 | { | |
1860 | /* Allocate the initial hunk of the fde_table. */ | |
1861 | fde_table | |
1862 | = (dw_fde_ref) xmalloc (FDE_TABLE_INCREMENT * sizeof (dw_fde_node)); | |
1863 | bzero ((char *) fde_table, FDE_TABLE_INCREMENT * sizeof (dw_fde_node)); | |
1864 | fde_table_allocated = FDE_TABLE_INCREMENT; | |
1865 | fde_table_in_use = 0; | |
1866 | ||
1867 | /* Generate the CFA instructions common to all FDE's. Do it now for the | |
1868 | sake of lookup_cfa. */ | |
1869 | ||
a6ab3aad JM |
1870 | #ifdef DWARF2_UNWIND_INFO |
1871 | /* On entry, the Canonical Frame Address is at SP. */ | |
1872 | dwarf2out_def_cfa (NULL, STACK_POINTER_REGNUM, INCOMING_FRAME_SP_OFFSET); | |
3f76745e JM |
1873 | initial_return_save (INCOMING_RETURN_ADDR_RTX); |
1874 | #endif | |
1875 | } | |
1876 | ||
1877 | void | |
1878 | dwarf2out_frame_finish () | |
1879 | { | |
3f76745e | 1880 | /* Output call frame information. */ |
a6ab3aad | 1881 | #ifdef MIPS_DEBUGGING_INFO |
3f76745e JM |
1882 | if (write_symbols == DWARF2_DEBUG) |
1883 | output_call_frame_info (0); | |
1884 | if (flag_exceptions && ! exceptions_via_longjmp) | |
1885 | output_call_frame_info (1); | |
a6ab3aad JM |
1886 | #else |
1887 | if (write_symbols == DWARF2_DEBUG | |
1888 | || (flag_exceptions && ! exceptions_via_longjmp)) | |
1889 | output_call_frame_info (1); | |
1890 | #endif | |
3f76745e JM |
1891 | } |
1892 | ||
1893 | #endif /* .debug_frame support */ | |
1894 | ||
1895 | /* And now, the support for symbolic debugging information. */ | |
1896 | #ifdef DWARF2_DEBUGGING_INFO | |
1897 | ||
1898 | extern char *getpwd (); | |
1899 | ||
1900 | /* NOTE: In the comments in this file, many references are made to | |
1901 | "Debugging Information Entries". This term is abbreviated as `DIE' | |
1902 | throughout the remainder of this file. */ | |
1903 | ||
1904 | /* An internal representation of the DWARF output is built, and then | |
1905 | walked to generate the DWARF debugging info. The walk of the internal | |
1906 | representation is done after the entire program has been compiled. | |
1907 | The types below are used to describe the internal representation. */ | |
1908 | ||
1909 | /* Each DIE may have a series of attribute/value pairs. Values | |
1910 | can take on several forms. The forms that are used in this | |
1911 | implementation are listed below. */ | |
1912 | ||
1913 | typedef enum | |
1914 | { | |
1915 | dw_val_class_addr, | |
1916 | dw_val_class_loc, | |
1917 | dw_val_class_const, | |
1918 | dw_val_class_unsigned_const, | |
1919 | dw_val_class_long_long, | |
1920 | dw_val_class_float, | |
1921 | dw_val_class_flag, | |
1922 | dw_val_class_die_ref, | |
1923 | dw_val_class_fde_ref, | |
1924 | dw_val_class_lbl_id, | |
1925 | dw_val_class_section_offset, | |
1926 | dw_val_class_str | |
a3f97cbb | 1927 | } |
3f76745e | 1928 | dw_val_class; |
a3f97cbb | 1929 | |
3f76745e JM |
1930 | /* Various DIE's use offsets relative to the beginning of the |
1931 | .debug_info section to refer to each other. */ | |
71dfc51f | 1932 | |
3f76745e JM |
1933 | typedef long int dw_offset; |
1934 | ||
1935 | /* Define typedefs here to avoid circular dependencies. */ | |
1936 | ||
1937 | typedef struct die_struct *dw_die_ref; | |
1938 | typedef struct dw_attr_struct *dw_attr_ref; | |
1939 | typedef struct dw_val_struct *dw_val_ref; | |
1940 | typedef struct dw_line_info_struct *dw_line_info_ref; | |
1941 | typedef struct dw_separate_line_info_struct *dw_separate_line_info_ref; | |
1942 | typedef struct dw_loc_descr_struct *dw_loc_descr_ref; | |
1943 | typedef struct pubname_struct *pubname_ref; | |
1944 | typedef dw_die_ref *arange_ref; | |
1945 | ||
1946 | /* Describe a double word constant value. */ | |
1947 | ||
1948 | typedef struct dw_long_long_struct | |
a3f97cbb | 1949 | { |
3f76745e JM |
1950 | unsigned long hi; |
1951 | unsigned long low; | |
1952 | } | |
1953 | dw_long_long_const; | |
1954 | ||
1955 | /* Describe a floating point constant value. */ | |
1956 | ||
1957 | typedef struct dw_fp_struct | |
1958 | { | |
1959 | long *array; | |
1960 | unsigned length; | |
1961 | } | |
1962 | dw_float_const; | |
1963 | ||
1964 | /* Each entry in the line_info_table maintains the file and | |
956d6950 | 1965 | line number associated with the label generated for that |
3f76745e JM |
1966 | entry. The label gives the PC value associated with |
1967 | the line number entry. */ | |
1968 | ||
1969 | typedef struct dw_line_info_struct | |
1970 | { | |
1971 | unsigned long dw_file_num; | |
1972 | unsigned long dw_line_num; | |
1973 | } | |
1974 | dw_line_info_entry; | |
1975 | ||
1976 | /* Line information for functions in separate sections; each one gets its | |
1977 | own sequence. */ | |
1978 | typedef struct dw_separate_line_info_struct | |
1979 | { | |
1980 | unsigned long dw_file_num; | |
1981 | unsigned long dw_line_num; | |
1982 | unsigned long function; | |
1983 | } | |
1984 | dw_separate_line_info_entry; | |
1985 | ||
956d6950 | 1986 | /* The dw_val_node describes an attribute's value, as it is |
3f76745e JM |
1987 | represented internally. */ |
1988 | ||
1989 | typedef struct dw_val_struct | |
1990 | { | |
1991 | dw_val_class val_class; | |
1992 | union | |
a3f97cbb | 1993 | { |
3f76745e JM |
1994 | char *val_addr; |
1995 | dw_loc_descr_ref val_loc; | |
1996 | long int val_int; | |
1997 | long unsigned val_unsigned; | |
1998 | dw_long_long_const val_long_long; | |
1999 | dw_float_const val_float; | |
2000 | dw_die_ref val_die_ref; | |
2001 | unsigned val_fde_index; | |
2002 | char *val_str; | |
2003 | char *val_lbl_id; | |
2004 | char *val_section; | |
2005 | unsigned char val_flag; | |
a3f97cbb | 2006 | } |
3f76745e JM |
2007 | v; |
2008 | } | |
2009 | dw_val_node; | |
2010 | ||
2011 | /* Locations in memory are described using a sequence of stack machine | |
2012 | operations. */ | |
2013 | ||
2014 | typedef struct dw_loc_descr_struct | |
2015 | { | |
2016 | dw_loc_descr_ref dw_loc_next; | |
2017 | enum dwarf_location_atom dw_loc_opc; | |
2018 | dw_val_node dw_loc_oprnd1; | |
2019 | dw_val_node dw_loc_oprnd2; | |
2020 | } | |
2021 | dw_loc_descr_node; | |
2022 | ||
2023 | /* Each DIE attribute has a field specifying the attribute kind, | |
2024 | a link to the next attribute in the chain, and an attribute value. | |
2025 | Attributes are typically linked below the DIE they modify. */ | |
2026 | ||
2027 | typedef struct dw_attr_struct | |
2028 | { | |
2029 | enum dwarf_attribute dw_attr; | |
2030 | dw_attr_ref dw_attr_next; | |
2031 | dw_val_node dw_attr_val; | |
2032 | } | |
2033 | dw_attr_node; | |
2034 | ||
2035 | /* The Debugging Information Entry (DIE) structure */ | |
2036 | ||
2037 | typedef struct die_struct | |
2038 | { | |
2039 | enum dwarf_tag die_tag; | |
2040 | dw_attr_ref die_attr; | |
2041 | dw_attr_ref die_attr_last; | |
2042 | dw_die_ref die_parent; | |
2043 | dw_die_ref die_child; | |
2044 | dw_die_ref die_child_last; | |
2045 | dw_die_ref die_sib; | |
2046 | dw_offset die_offset; | |
2047 | unsigned long die_abbrev; | |
a3f97cbb | 2048 | } |
3f76745e JM |
2049 | die_node; |
2050 | ||
2051 | /* The pubname structure */ | |
2052 | ||
2053 | typedef struct pubname_struct | |
2054 | { | |
2055 | dw_die_ref die; | |
2056 | char * name; | |
2057 | } | |
2058 | pubname_entry; | |
2059 | ||
ef76d03b JW |
2060 | /* The limbo die list structure. */ |
2061 | typedef struct limbo_die_struct | |
2062 | { | |
2063 | dw_die_ref die; | |
2064 | struct limbo_die_struct *next; | |
2065 | } | |
2066 | limbo_die_node; | |
2067 | ||
3f76745e JM |
2068 | /* How to start an assembler comment. */ |
2069 | #ifndef ASM_COMMENT_START | |
2070 | #define ASM_COMMENT_START ";#" | |
2071 | #endif | |
2072 | ||
2073 | /* Define a macro which returns non-zero for a TYPE_DECL which was | |
2074 | implicitly generated for a tagged type. | |
2075 | ||
2076 | Note that unlike the gcc front end (which generates a NULL named | |
2077 | TYPE_DECL node for each complete tagged type, each array type, and | |
2078 | each function type node created) the g++ front end generates a | |
2079 | _named_ TYPE_DECL node for each tagged type node created. | |
2080 | These TYPE_DECLs have DECL_ARTIFICIAL set, so we know not to | |
2081 | generate a DW_TAG_typedef DIE for them. */ | |
2082 | ||
2083 | #define TYPE_DECL_IS_STUB(decl) \ | |
2084 | (DECL_NAME (decl) == NULL_TREE \ | |
2085 | || (DECL_ARTIFICIAL (decl) \ | |
2086 | && is_tagged_type (TREE_TYPE (decl)) \ | |
ef76d03b JW |
2087 | && ((decl == TYPE_STUB_DECL (TREE_TYPE (decl))) \ |
2088 | /* This is necessary for stub decls that \ | |
2089 | appear in nested inline functions. */ \ | |
2090 | || (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE \ | |
2091 | && (decl_ultimate_origin (decl) \ | |
2092 | == TYPE_STUB_DECL (TREE_TYPE (decl))))))) | |
3f76745e JM |
2093 | |
2094 | /* Information concerning the compilation unit's programming | |
2095 | language, and compiler version. */ | |
2096 | ||
2097 | extern int flag_traditional; | |
2098 | extern char *version_string; | |
2099 | extern char *language_string; | |
2100 | ||
2101 | /* Fixed size portion of the DWARF compilation unit header. */ | |
2102 | #define DWARF_COMPILE_UNIT_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 3) | |
2103 | ||
2104 | /* Fixed size portion of debugging line information prolog. */ | |
2105 | #define DWARF_LINE_PROLOG_HEADER_SIZE 5 | |
2106 | ||
2107 | /* Fixed size portion of public names info. */ | |
2108 | #define DWARF_PUBNAMES_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2) | |
2109 | ||
2110 | /* Fixed size portion of the address range info. */ | |
2111 | #define DWARF_ARANGES_HEADER_SIZE \ | |
2112 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, PTR_SIZE * 2) - DWARF_OFFSET_SIZE) | |
2113 | ||
2114 | /* Define the architecture-dependent minimum instruction length (in bytes). | |
2115 | In this implementation of DWARF, this field is used for information | |
2116 | purposes only. Since GCC generates assembly language, we have | |
2117 | no a priori knowledge of how many instruction bytes are generated | |
2118 | for each source line, and therefore can use only the DW_LNE_set_address | |
2119 | and DW_LNS_fixed_advance_pc line information commands. */ | |
2120 | ||
2121 | #ifndef DWARF_LINE_MIN_INSTR_LENGTH | |
2122 | #define DWARF_LINE_MIN_INSTR_LENGTH 4 | |
2123 | #endif | |
2124 | ||
2125 | /* Minimum line offset in a special line info. opcode. | |
2126 | This value was chosen to give a reasonable range of values. */ | |
2127 | #define DWARF_LINE_BASE -10 | |
2128 | ||
2129 | /* First special line opcde - leave room for the standard opcodes. */ | |
2130 | #define DWARF_LINE_OPCODE_BASE 10 | |
2131 | ||
2132 | /* Range of line offsets in a special line info. opcode. */ | |
2133 | #define DWARF_LINE_RANGE (254-DWARF_LINE_OPCODE_BASE+1) | |
2134 | ||
2135 | /* Flag that indicates the initial value of the is_stmt_start flag. | |
2136 | In the present implementation, we do not mark any lines as | |
2137 | the beginning of a source statement, because that information | |
2138 | is not made available by the GCC front-end. */ | |
2139 | #define DWARF_LINE_DEFAULT_IS_STMT_START 1 | |
2140 | ||
2141 | /* This location is used by calc_die_sizes() to keep track | |
2142 | the offset of each DIE within the .debug_info section. */ | |
2143 | static unsigned long next_die_offset; | |
2144 | ||
2145 | /* Record the root of the DIE's built for the current compilation unit. */ | |
2146 | static dw_die_ref comp_unit_die; | |
2147 | ||
ef76d03b JW |
2148 | /* A list of DIEs with a NULL parent waiting to be relocated. */ |
2149 | static limbo_die_node *limbo_die_list = 0; | |
3f76745e JM |
2150 | |
2151 | /* Pointer to an array of filenames referenced by this compilation unit. */ | |
2152 | static char **file_table; | |
2153 | ||
2154 | /* Total number of entries in the table (i.e. array) pointed to by | |
2155 | `file_table'. This is the *total* and includes both used and unused | |
2156 | slots. */ | |
2157 | static unsigned file_table_allocated; | |
a3f97cbb | 2158 | |
3f76745e JM |
2159 | /* Number of entries in the file_table which are actually in use. */ |
2160 | static unsigned file_table_in_use; | |
71dfc51f | 2161 | |
3f76745e JM |
2162 | /* Size (in elements) of increments by which we may expand the filename |
2163 | table. */ | |
2164 | #define FILE_TABLE_INCREMENT 64 | |
71dfc51f | 2165 | |
3f76745e JM |
2166 | /* Local pointer to the name of the main input file. Initialized in |
2167 | dwarf2out_init. */ | |
2168 | static char *primary_filename; | |
a3f97cbb | 2169 | |
3f76745e JM |
2170 | /* For Dwarf output, we must assign lexical-blocks id numbers in the order in |
2171 | which their beginnings are encountered. We output Dwarf debugging info | |
2172 | that refers to the beginnings and ends of the ranges of code for each | |
2173 | lexical block. The labels themselves are generated in final.c, which | |
2174 | assigns numbers to the blocks in the same way. */ | |
2175 | static unsigned next_block_number = 2; | |
a3f97cbb | 2176 | |
3f76745e JM |
2177 | /* A pointer to the base of a table of references to DIE's that describe |
2178 | declarations. The table is indexed by DECL_UID() which is a unique | |
956d6950 | 2179 | number identifying each decl. */ |
3f76745e | 2180 | static dw_die_ref *decl_die_table; |
71dfc51f | 2181 | |
3f76745e JM |
2182 | /* Number of elements currently allocated for the decl_die_table. */ |
2183 | static unsigned decl_die_table_allocated; | |
a3f97cbb | 2184 | |
3f76745e JM |
2185 | /* Number of elements in decl_die_table currently in use. */ |
2186 | static unsigned decl_die_table_in_use; | |
71dfc51f | 2187 | |
3f76745e JM |
2188 | /* Size (in elements) of increments by which we may expand the |
2189 | decl_die_table. */ | |
2190 | #define DECL_DIE_TABLE_INCREMENT 256 | |
a3f97cbb | 2191 | |
3f76745e JM |
2192 | /* A pointer to the base of a table of references to declaration |
2193 | scopes. This table is a display which tracks the nesting | |
2194 | of declaration scopes at the current scope and containing | |
2195 | scopes. This table is used to find the proper place to | |
2196 | define type declaration DIE's. */ | |
2197 | static tree *decl_scope_table; | |
a3f97cbb | 2198 | |
3f76745e JM |
2199 | /* Number of elements currently allocated for the decl_scope_table. */ |
2200 | static unsigned decl_scope_table_allocated; | |
71dfc51f | 2201 | |
956d6950 | 2202 | /* Current level of nesting of declaration scopes. */ |
3f76745e | 2203 | static unsigned decl_scope_depth; |
bdb669cb | 2204 | |
3f76745e JM |
2205 | /* Size (in elements) of increments by which we may expand the |
2206 | decl_scope_table. */ | |
2207 | #define DECL_SCOPE_TABLE_INCREMENT 64 | |
bdb669cb | 2208 | |
3f76745e JM |
2209 | /* A pointer to the base of a list of references to DIE's that |
2210 | are uniquely identified by their tag, presence/absence of | |
2211 | children DIE's, and list of attribute/value pairs. */ | |
2212 | static dw_die_ref *abbrev_die_table; | |
71dfc51f | 2213 | |
3f76745e JM |
2214 | /* Number of elements currently allocated for abbrev_die_table. */ |
2215 | static unsigned abbrev_die_table_allocated; | |
bdb669cb | 2216 | |
3f76745e JM |
2217 | /* Number of elements in type_die_table currently in use. */ |
2218 | static unsigned abbrev_die_table_in_use; | |
bdb669cb | 2219 | |
3f76745e JM |
2220 | /* Size (in elements) of increments by which we may expand the |
2221 | abbrev_die_table. */ | |
2222 | #define ABBREV_DIE_TABLE_INCREMENT 256 | |
71dfc51f | 2223 | |
3f76745e JM |
2224 | /* A pointer to the base of a table that contains line information |
2225 | for each source code line in .text in the compilation unit. */ | |
2226 | static dw_line_info_ref line_info_table; | |
a3f97cbb | 2227 | |
3f76745e JM |
2228 | /* Number of elements currently allocated for line_info_table. */ |
2229 | static unsigned line_info_table_allocated; | |
71dfc51f | 2230 | |
3f76745e JM |
2231 | /* Number of elements in separate_line_info_table currently in use. */ |
2232 | static unsigned separate_line_info_table_in_use; | |
71dfc51f | 2233 | |
3f76745e JM |
2234 | /* A pointer to the base of a table that contains line information |
2235 | for each source code line outside of .text in the compilation unit. */ | |
2236 | static dw_separate_line_info_ref separate_line_info_table; | |
a3f97cbb | 2237 | |
3f76745e JM |
2238 | /* Number of elements currently allocated for separate_line_info_table. */ |
2239 | static unsigned separate_line_info_table_allocated; | |
71dfc51f | 2240 | |
3f76745e JM |
2241 | /* Number of elements in line_info_table currently in use. */ |
2242 | static unsigned line_info_table_in_use; | |
71dfc51f | 2243 | |
3f76745e JM |
2244 | /* Size (in elements) of increments by which we may expand the |
2245 | line_info_table. */ | |
2246 | #define LINE_INFO_TABLE_INCREMENT 1024 | |
a3f97cbb | 2247 | |
3f76745e JM |
2248 | /* A pointer to the base of a table that contains a list of publicly |
2249 | accessible names. */ | |
2250 | static pubname_ref pubname_table; | |
71dfc51f | 2251 | |
3f76745e JM |
2252 | /* Number of elements currently allocated for pubname_table. */ |
2253 | static unsigned pubname_table_allocated; | |
2254 | ||
2255 | /* Number of elements in pubname_table currently in use. */ | |
2256 | static unsigned pubname_table_in_use; | |
2257 | ||
2258 | /* Size (in elements) of increments by which we may expand the | |
2259 | pubname_table. */ | |
2260 | #define PUBNAME_TABLE_INCREMENT 64 | |
2261 | ||
2262 | /* A pointer to the base of a table that contains a list of publicly | |
2263 | accessible names. */ | |
2264 | static arange_ref arange_table; | |
71dfc51f | 2265 | |
3f76745e JM |
2266 | /* Number of elements currently allocated for arange_table. */ |
2267 | static unsigned arange_table_allocated; | |
a3f97cbb | 2268 | |
3f76745e JM |
2269 | /* Number of elements in arange_table currently in use. */ |
2270 | static unsigned arange_table_in_use; | |
71dfc51f | 2271 | |
3f76745e JM |
2272 | /* Size (in elements) of increments by which we may expand the |
2273 | arange_table. */ | |
2274 | #define ARANGE_TABLE_INCREMENT 64 | |
71dfc51f | 2275 | |
3f76745e JM |
2276 | /* A pointer to the base of a list of pending types which we haven't |
2277 | generated DIEs for yet, but which we will have to come back to | |
2278 | later on. */ | |
469ac993 | 2279 | |
3f76745e | 2280 | static tree *pending_types_list; |
71dfc51f | 2281 | |
3f76745e JM |
2282 | /* Number of elements currently allocated for the pending_types_list. */ |
2283 | static unsigned pending_types_allocated; | |
71dfc51f | 2284 | |
3f76745e JM |
2285 | /* Number of elements of pending_types_list currently in use. */ |
2286 | static unsigned pending_types; | |
a3f97cbb | 2287 | |
3f76745e JM |
2288 | /* Size (in elements) of increments by which we may expand the pending |
2289 | types list. Actually, a single hunk of space of this size should | |
2290 | be enough for most typical programs. */ | |
2291 | #define PENDING_TYPES_INCREMENT 64 | |
71dfc51f | 2292 | |
3f76745e JM |
2293 | /* Record whether the function being analyzed contains inlined functions. */ |
2294 | static int current_function_has_inlines; | |
2295 | static int comp_unit_has_inlines; | |
71dfc51f | 2296 | |
3f76745e JM |
2297 | /* A pointer to the ..._DECL node which we have most recently been working |
2298 | on. We keep this around just in case something about it looks screwy and | |
2299 | we want to tell the user what the source coordinates for the actual | |
2300 | declaration are. */ | |
2301 | static tree dwarf_last_decl; | |
a3f97cbb | 2302 | |
3f76745e | 2303 | /* Forward declarations for functions defined in this file. */ |
71dfc51f | 2304 | |
3f76745e JM |
2305 | static void addr_const_to_string PROTO((char *, rtx)); |
2306 | static char *addr_to_string PROTO((rtx)); | |
2307 | static int is_pseudo_reg PROTO((rtx)); | |
2308 | static tree type_main_variant PROTO((tree)); | |
2309 | static int is_tagged_type PROTO((tree)); | |
2310 | static char *dwarf_tag_name PROTO((unsigned)); | |
2311 | static char *dwarf_attr_name PROTO((unsigned)); | |
2312 | static char *dwarf_form_name PROTO((unsigned)); | |
2313 | static char *dwarf_stack_op_name PROTO((unsigned)); | |
2314 | static char *dwarf_type_encoding_name PROTO((unsigned)); | |
2315 | static tree decl_ultimate_origin PROTO((tree)); | |
2316 | static tree block_ultimate_origin PROTO((tree)); | |
2317 | static tree decl_class_context PROTO((tree)); | |
2318 | static void add_dwarf_attr PROTO((dw_die_ref, dw_attr_ref)); | |
2319 | static void add_AT_flag PROTO((dw_die_ref, | |
2320 | enum dwarf_attribute, | |
2321 | unsigned)); | |
2322 | static void add_AT_int PROTO((dw_die_ref, | |
2323 | enum dwarf_attribute, long)); | |
2324 | static void add_AT_unsigned PROTO((dw_die_ref, | |
2325 | enum dwarf_attribute, | |
2326 | unsigned long)); | |
2327 | static void add_AT_long_long PROTO((dw_die_ref, | |
2328 | enum dwarf_attribute, | |
2329 | unsigned long, unsigned long)); | |
2330 | static void add_AT_float PROTO((dw_die_ref, | |
2331 | enum dwarf_attribute, | |
2332 | unsigned, long *)); | |
2333 | static void add_AT_string PROTO((dw_die_ref, | |
2334 | enum dwarf_attribute, char *)); | |
2335 | static void add_AT_die_ref PROTO((dw_die_ref, | |
2336 | enum dwarf_attribute, | |
2337 | dw_die_ref)); | |
2338 | static void add_AT_fde_ref PROTO((dw_die_ref, | |
2339 | enum dwarf_attribute, | |
2340 | unsigned)); | |
2341 | static void add_AT_loc PROTO((dw_die_ref, | |
2342 | enum dwarf_attribute, | |
2343 | dw_loc_descr_ref)); | |
2344 | static void add_AT_addr PROTO((dw_die_ref, | |
2345 | enum dwarf_attribute, char *)); | |
2346 | static void add_AT_lbl_id PROTO((dw_die_ref, | |
2347 | enum dwarf_attribute, char *)); | |
956d6950 | 2348 | static void add_AT_section_offset PROTO((dw_die_ref, |
3f76745e JM |
2349 | enum dwarf_attribute, char *)); |
2350 | static int is_extern_subr_die PROTO((dw_die_ref)); | |
2351 | static dw_attr_ref get_AT PROTO((dw_die_ref, | |
2352 | enum dwarf_attribute)); | |
2353 | static char *get_AT_low_pc PROTO((dw_die_ref)); | |
2354 | static char *get_AT_hi_pc PROTO((dw_die_ref)); | |
2355 | static char *get_AT_string PROTO((dw_die_ref, | |
2356 | enum dwarf_attribute)); | |
2357 | static int get_AT_flag PROTO((dw_die_ref, | |
2358 | enum dwarf_attribute)); | |
2359 | static unsigned get_AT_unsigned PROTO((dw_die_ref, | |
2360 | enum dwarf_attribute)); | |
2361 | static int is_c_family PROTO((void)); | |
2362 | static int is_fortran PROTO((void)); | |
2363 | static void remove_AT PROTO((dw_die_ref, | |
2364 | enum dwarf_attribute)); | |
2365 | static void remove_children PROTO((dw_die_ref)); | |
2366 | static void add_child_die PROTO((dw_die_ref, dw_die_ref)); | |
2367 | static dw_die_ref new_die PROTO((enum dwarf_tag, dw_die_ref)); | |
2368 | static dw_die_ref lookup_type_die PROTO((tree)); | |
2369 | static void equate_type_number_to_die PROTO((tree, dw_die_ref)); | |
2370 | static dw_die_ref lookup_decl_die PROTO((tree)); | |
2371 | static void equate_decl_number_to_die PROTO((tree, dw_die_ref)); | |
2372 | static dw_loc_descr_ref new_loc_descr PROTO((enum dwarf_location_atom, | |
2373 | unsigned long, unsigned long)); | |
2374 | static void add_loc_descr PROTO((dw_loc_descr_ref *, | |
2375 | dw_loc_descr_ref)); | |
2376 | static void print_spaces PROTO((FILE *)); | |
2377 | static void print_die PROTO((dw_die_ref, FILE *)); | |
2378 | static void print_dwarf_line_table PROTO((FILE *)); | |
956d6950 | 2379 | static void add_sibling_attributes PROTO((dw_die_ref)); |
3f76745e JM |
2380 | static void build_abbrev_table PROTO((dw_die_ref)); |
2381 | static unsigned long size_of_string PROTO((char *)); | |
2382 | static unsigned long size_of_loc_descr PROTO((dw_loc_descr_ref)); | |
2383 | static unsigned long size_of_locs PROTO((dw_loc_descr_ref)); | |
2384 | static int constant_size PROTO((long unsigned)); | |
2385 | static unsigned long size_of_die PROTO((dw_die_ref)); | |
2386 | static void calc_die_sizes PROTO((dw_die_ref)); | |
2387 | static unsigned long size_of_prolog PROTO((void)); | |
2388 | static unsigned long size_of_line_info PROTO((void)); | |
2389 | static unsigned long size_of_pubnames PROTO((void)); | |
2390 | static unsigned long size_of_aranges PROTO((void)); | |
2391 | static enum dwarf_form value_format PROTO((dw_val_ref)); | |
2392 | static void output_value_format PROTO((dw_val_ref)); | |
2393 | static void output_abbrev_section PROTO((void)); | |
2394 | static void output_loc_operands PROTO((dw_loc_descr_ref)); | |
2395 | static unsigned long sibling_offset PROTO((dw_die_ref)); | |
2396 | static void output_die PROTO((dw_die_ref)); | |
2397 | static void output_compilation_unit_header PROTO((void)); | |
2398 | static char *dwarf2_name PROTO((tree, int)); | |
2399 | static void add_pubname PROTO((tree, dw_die_ref)); | |
2400 | static void output_pubnames PROTO((void)); | |
2401 | static void add_arrange PROTO((tree, dw_die_ref)); | |
2402 | static void output_arranges PROTO((void)); | |
2403 | static void output_line_info PROTO((void)); | |
2404 | static int is_body_block PROTO((tree)); | |
2405 | static dw_die_ref base_type_die PROTO((tree)); | |
2406 | static tree root_type PROTO((tree)); | |
2407 | static int is_base_type PROTO((tree)); | |
2408 | static dw_die_ref modified_type_die PROTO((tree, int, int, dw_die_ref)); | |
2409 | static int type_is_enum PROTO((tree)); | |
4401bf24 | 2410 | static dw_loc_descr_ref reg_loc_descriptor PROTO((rtx)); |
3f76745e JM |
2411 | static dw_loc_descr_ref based_loc_descr PROTO((unsigned, long)); |
2412 | static int is_based_loc PROTO((rtx)); | |
2413 | static dw_loc_descr_ref mem_loc_descriptor PROTO((rtx)); | |
4401bf24 | 2414 | static dw_loc_descr_ref concat_loc_descriptor PROTO((rtx, rtx)); |
3f76745e JM |
2415 | static dw_loc_descr_ref loc_descriptor PROTO((rtx)); |
2416 | static unsigned ceiling PROTO((unsigned, unsigned)); | |
2417 | static tree field_type PROTO((tree)); | |
2418 | static unsigned simple_type_align_in_bits PROTO((tree)); | |
2419 | static unsigned simple_type_size_in_bits PROTO((tree)); | |
2420 | static unsigned field_byte_offset PROTO((tree)); | |
ef76d03b JW |
2421 | static void add_AT_location_description PROTO((dw_die_ref, |
2422 | enum dwarf_attribute, rtx)); | |
3f76745e JM |
2423 | static void add_data_member_location_attribute PROTO((dw_die_ref, tree)); |
2424 | static void add_const_value_attribute PROTO((dw_die_ref, rtx)); | |
2425 | static void add_location_or_const_value_attribute PROTO((dw_die_ref, tree)); | |
2426 | static void add_name_attribute PROTO((dw_die_ref, char *)); | |
2427 | static void add_bound_info PROTO((dw_die_ref, | |
2428 | enum dwarf_attribute, tree)); | |
2429 | static void add_subscript_info PROTO((dw_die_ref, tree)); | |
2430 | static void add_byte_size_attribute PROTO((dw_die_ref, tree)); | |
2431 | static void add_bit_offset_attribute PROTO((dw_die_ref, tree)); | |
2432 | static void add_bit_size_attribute PROTO((dw_die_ref, tree)); | |
2433 | static void add_prototyped_attribute PROTO((dw_die_ref, tree)); | |
2434 | static void add_abstract_origin_attribute PROTO((dw_die_ref, tree)); | |
2435 | static void add_pure_or_virtual_attribute PROTO((dw_die_ref, tree)); | |
2436 | static void add_src_coords_attributes PROTO((dw_die_ref, tree)); | |
2437 | static void ad_name_and_src_coords_attributes PROTO((dw_die_ref, tree)); | |
2438 | static void push_decl_scope PROTO((tree)); | |
2439 | static dw_die_ref scope_die_for PROTO((tree, dw_die_ref)); | |
2440 | static void pop_decl_scope PROTO((void)); | |
2441 | static void add_type_attribute PROTO((dw_die_ref, tree, int, int, | |
2442 | dw_die_ref)); | |
2443 | static char *type_tag PROTO((tree)); | |
2444 | static tree member_declared_type PROTO((tree)); | |
2445 | static char *decl_start_label PROTO((tree)); | |
2446 | static void gen_arrqay_type_die PROTO((tree, dw_die_ref)); | |
2447 | static void gen_set_type_die PROTO((tree, dw_die_ref)); | |
2448 | static void gen_entry_point_die PROTO((tree, dw_die_ref)); | |
2449 | static void pend_type PROTO((tree)); | |
2450 | static void output_pending_types_for_scope PROTO((dw_die_ref)); | |
2451 | static void gen_inlined_enumeration_type_die PROTO((tree, dw_die_ref)); | |
2452 | static void gen_inlined_structure_type_die PROTO((tree, dw_die_ref)); | |
2453 | static void gen_inlined_union_type_die PROTO((tree, dw_die_ref)); | |
2454 | static void gen_enumeration_type_die PROTO((tree, dw_die_ref)); | |
2455 | static dw_die_ref gen_formal_parameter_die PROTO((tree, dw_die_ref)); | |
2456 | static void gen_unspecified_parameters_die PROTO((tree, dw_die_ref)); | |
2457 | static void gen_formal_types_die PROTO((tree, dw_die_ref)); | |
2458 | static void gen_subprogram_die PROTO((tree, dw_die_ref)); | |
2459 | static void gen_variable_die PROTO((tree, dw_die_ref)); | |
2460 | static void gen_label_die PROTO((tree, dw_die_ref)); | |
2461 | static void gen_lexical_block_die PROTO((tree, dw_die_ref, int)); | |
2462 | static void gen_inlined_subprogram_die PROTO((tree, dw_die_ref, int)); | |
2463 | static void gen_field_die PROTO((tree, dw_die_ref)); | |
2464 | static void gen_ptr_to_mbr_type_die PROTO((tree, dw_die_ref)); | |
2465 | static void gen_compile_unit_die PROTO((char *)); | |
2466 | static void gen_string_type_die PROTO((tree, dw_die_ref)); | |
2467 | static void gen_inheritance_die PROTO((tree, dw_die_ref)); | |
2468 | static void gen_member_die PROTO((tree, dw_die_ref)); | |
2469 | static void gen_struct_or_union_type_die PROTO((tree, dw_die_ref)); | |
2470 | static void gen_subroutine_type_die PROTO((tree, dw_die_ref)); | |
2471 | static void gen_typedef_die PROTO((tree, dw_die_ref)); | |
2472 | static void gen_type_die PROTO((tree, dw_die_ref)); | |
2473 | static void gen_tagged_type_instantiation_die PROTO((tree, dw_die_ref)); | |
2474 | static void gen_block_die PROTO((tree, dw_die_ref, int)); | |
2475 | static void decls_for_scope PROTO((tree, dw_die_ref, int)); | |
2476 | static int is_redundant_typedef PROTO((tree)); | |
2477 | static void gen_decl_die PROTO((tree, dw_die_ref)); | |
2478 | static unsigned lookup_filename PROTO((char *)); | |
71dfc51f | 2479 | |
3f76745e | 2480 | /* Section names used to hold DWARF debugging information. */ |
c53aa195 JM |
2481 | #ifndef DEBUG_INFO_SECTION |
2482 | #define DEBUG_INFO_SECTION ".debug_info" | |
3f76745e JM |
2483 | #endif |
2484 | #ifndef ABBREV_SECTION | |
2485 | #define ABBREV_SECTION ".debug_abbrev" | |
2486 | #endif | |
2487 | #ifndef ARANGES_SECTION | |
2488 | #define ARANGES_SECTION ".debug_aranges" | |
2489 | #endif | |
2490 | #ifndef DW_MACINFO_SECTION | |
2491 | #define DW_MACINFO_SECTION ".debug_macinfo" | |
2492 | #endif | |
c53aa195 JM |
2493 | #ifndef DEBUG_LINE_SECTION |
2494 | #define DEBUG_LINE_SECTION ".debug_line" | |
3f76745e JM |
2495 | #endif |
2496 | #ifndef LOC_SECTION | |
2497 | #define LOC_SECTION ".debug_loc" | |
2498 | #endif | |
2499 | #ifndef PUBNAMES_SECTION | |
2500 | #define PUBNAMES_SECTION ".debug_pubnames" | |
2501 | #endif | |
2502 | #ifndef STR_SECTION | |
2503 | #define STR_SECTION ".debug_str" | |
2504 | #endif | |
a3f97cbb | 2505 | |
956d6950 | 2506 | /* Standard ELF section names for compiled code and data. */ |
3f76745e JM |
2507 | #ifndef TEXT_SECTION |
2508 | #define TEXT_SECTION ".text" | |
2509 | #endif | |
2510 | #ifndef DATA_SECTION | |
2511 | #define DATA_SECTION ".data" | |
2512 | #endif | |
2513 | #ifndef BSS_SECTION | |
2514 | #define BSS_SECTION ".bss" | |
2515 | #endif | |
71dfc51f | 2516 | |
a3f97cbb | 2517 | |
3f76745e JM |
2518 | /* Definitions of defaults for formats and names of various special |
2519 | (artificial) labels which may be generated within this file (when the -g | |
2520 | options is used and DWARF_DEBUGGING_INFO is in effect. | |
2521 | If necessary, these may be overridden from within the tm.h file, but | |
2522 | typically, overriding these defaults is unnecessary. */ | |
a3f97cbb | 2523 | |
257ebd1f | 2524 | static char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 2525 | |
3f76745e JM |
2526 | #ifndef TEXT_END_LABEL |
2527 | #define TEXT_END_LABEL "Letext" | |
2528 | #endif | |
2529 | #ifndef DATA_END_LABEL | |
2530 | #define DATA_END_LABEL "Ledata" | |
2531 | #endif | |
2532 | #ifndef BSS_END_LABEL | |
2533 | #define BSS_END_LABEL "Lebss" | |
2534 | #endif | |
2535 | #ifndef INSN_LABEL_FMT | |
2536 | #define INSN_LABEL_FMT "LI%u_" | |
2537 | #endif | |
2538 | #ifndef BLOCK_BEGIN_LABEL | |
2539 | #define BLOCK_BEGIN_LABEL "LBB" | |
2540 | #endif | |
2541 | #ifndef BLOCK_END_LABEL | |
2542 | #define BLOCK_END_LABEL "LBE" | |
2543 | #endif | |
2544 | #ifndef BODY_BEGIN_LABEL | |
2545 | #define BODY_BEGIN_LABEL "Lbb" | |
2546 | #endif | |
2547 | #ifndef BODY_END_LABEL | |
2548 | #define BODY_END_LABEL "Lbe" | |
2549 | #endif | |
2550 | #ifndef LINE_CODE_LABEL | |
2551 | #define LINE_CODE_LABEL "LM" | |
2552 | #endif | |
2553 | #ifndef SEPARATE_LINE_CODE_LABEL | |
2554 | #define SEPARATE_LINE_CODE_LABEL "LSM" | |
2555 | #endif | |
71dfc51f | 2556 | |
3f76745e JM |
2557 | /* Convert a reference to the assembler name of a C-level name. This |
2558 | macro has the same effect as ASM_OUTPUT_LABELREF, but copies to | |
2559 | a string rather than writing to a file. */ | |
2560 | #ifndef ASM_NAME_TO_STRING | |
2561 | #define ASM_NAME_TO_STRING(STR, NAME) \ | |
2562 | do { \ | |
2563 | if ((NAME)[0] == '*') \ | |
2564 | strcpy (STR, NAME+1); \ | |
2565 | else \ | |
2566 | strcpy (STR, NAME); \ | |
2567 | } \ | |
2568 | while (0) | |
2569 | #endif | |
2570 | \f | |
2571 | /* Convert an integer constant expression into assembler syntax. Addition | |
2572 | and subtraction are the only arithmetic that may appear in these | |
2573 | expressions. This is an adaptation of output_addr_const in final.c. | |
2574 | Here, the target of the conversion is a string buffer. We can't use | |
2575 | output_addr_const directly, because it writes to a file. */ | |
71dfc51f | 2576 | |
3f76745e JM |
2577 | static void |
2578 | addr_const_to_string (str, x) | |
2579 | char *str; | |
2580 | rtx x; | |
a3f97cbb | 2581 | { |
3f76745e JM |
2582 | char buf1[256]; |
2583 | char buf2[256]; | |
71dfc51f | 2584 | |
3f76745e JM |
2585 | restart: |
2586 | str[0] = '\0'; | |
2587 | switch (GET_CODE (x)) | |
2588 | { | |
2589 | case PC: | |
2590 | if (flag_pic) | |
2591 | strcat (str, ","); | |
2592 | else | |
2593 | abort (); | |
2594 | break; | |
71dfc51f | 2595 | |
3f76745e JM |
2596 | case SYMBOL_REF: |
2597 | ASM_NAME_TO_STRING (buf1, XSTR (x, 0)); | |
2598 | strcat (str, buf1); | |
2599 | break; | |
a3f97cbb | 2600 | |
3f76745e JM |
2601 | case LABEL_REF: |
2602 | ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (XEXP (x, 0))); | |
2603 | ASM_NAME_TO_STRING (buf2, buf1); | |
2604 | strcat (str, buf2); | |
2605 | break; | |
71dfc51f | 2606 | |
3f76745e JM |
2607 | case CODE_LABEL: |
2608 | ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (x)); | |
2609 | ASM_NAME_TO_STRING (buf2, buf1); | |
2610 | strcat (str, buf2); | |
2611 | break; | |
71dfc51f | 2612 | |
3f76745e JM |
2613 | case CONST_INT: |
2614 | sprintf (buf1, HOST_WIDE_INT_PRINT_DEC, INTVAL (x)); | |
2615 | strcat (str, buf1); | |
2616 | break; | |
a3f97cbb | 2617 | |
3f76745e JM |
2618 | case CONST: |
2619 | /* This used to output parentheses around the expression, but that does | |
2620 | not work on the 386 (either ATT or BSD assembler). */ | |
2621 | addr_const_to_string (buf1, XEXP (x, 0)); | |
2622 | strcat (str, buf1); | |
2623 | break; | |
71dfc51f | 2624 | |
3f76745e JM |
2625 | case CONST_DOUBLE: |
2626 | if (GET_MODE (x) == VOIDmode) | |
2627 | { | |
2628 | /* We can use %d if the number is one word and positive. */ | |
2629 | if (CONST_DOUBLE_HIGH (x)) | |
2630 | sprintf (buf1, HOST_WIDE_INT_PRINT_DOUBLE_HEX, | |
2631 | CONST_DOUBLE_HIGH (x), CONST_DOUBLE_LOW (x)); | |
2632 | else if (CONST_DOUBLE_LOW (x) < 0) | |
2633 | sprintf (buf1, HOST_WIDE_INT_PRINT_HEX, CONST_DOUBLE_LOW (x)); | |
2634 | else | |
2635 | sprintf (buf1, HOST_WIDE_INT_PRINT_DEC, | |
2636 | CONST_DOUBLE_LOW (x)); | |
2637 | strcat (str, buf1); | |
2638 | } | |
2639 | else | |
2640 | /* We can't handle floating point constants; PRINT_OPERAND must | |
2641 | handle them. */ | |
2642 | output_operand_lossage ("floating constant misused"); | |
2643 | break; | |
71dfc51f | 2644 | |
3f76745e JM |
2645 | case PLUS: |
2646 | /* Some assemblers need integer constants to appear last (eg masm). */ | |
2647 | if (GET_CODE (XEXP (x, 0)) == CONST_INT) | |
a3f97cbb | 2648 | { |
3f76745e JM |
2649 | addr_const_to_string (buf1, XEXP (x, 1)); |
2650 | strcat (str, buf1); | |
2651 | if (INTVAL (XEXP (x, 0)) >= 0) | |
2652 | strcat (str, "+"); | |
2653 | ||
2654 | addr_const_to_string (buf1, XEXP (x, 0)); | |
2655 | strcat (str, buf1); | |
a3f97cbb | 2656 | } |
3f76745e JM |
2657 | else |
2658 | { | |
2659 | addr_const_to_string (buf1, XEXP (x, 0)); | |
2660 | strcat (str, buf1); | |
2661 | if (INTVAL (XEXP (x, 1)) >= 0) | |
2662 | strcat (str, "+"); | |
71dfc51f | 2663 | |
3f76745e JM |
2664 | addr_const_to_string (buf1, XEXP (x, 1)); |
2665 | strcat (str, buf1); | |
2666 | } | |
2667 | break; | |
a3f97cbb | 2668 | |
3f76745e JM |
2669 | case MINUS: |
2670 | /* Avoid outputting things like x-x or x+5-x, since some assemblers | |
2671 | can't handle that. */ | |
2672 | x = simplify_subtraction (x); | |
2673 | if (GET_CODE (x) != MINUS) | |
2674 | goto restart; | |
71dfc51f | 2675 | |
3f76745e JM |
2676 | addr_const_to_string (buf1, XEXP (x, 0)); |
2677 | strcat (str, buf1); | |
2678 | strcat (str, "-"); | |
2679 | if (GET_CODE (XEXP (x, 1)) == CONST_INT | |
2680 | && INTVAL (XEXP (x, 1)) < 0) | |
a3f97cbb | 2681 | { |
3f76745e JM |
2682 | strcat (str, ASM_OPEN_PAREN); |
2683 | addr_const_to_string (buf1, XEXP (x, 1)); | |
2684 | strcat (str, buf1); | |
2685 | strcat (str, ASM_CLOSE_PAREN); | |
2686 | } | |
2687 | else | |
2688 | { | |
2689 | addr_const_to_string (buf1, XEXP (x, 1)); | |
2690 | strcat (str, buf1); | |
a3f97cbb | 2691 | } |
3f76745e | 2692 | break; |
71dfc51f | 2693 | |
3f76745e JM |
2694 | case ZERO_EXTEND: |
2695 | case SIGN_EXTEND: | |
2696 | addr_const_to_string (buf1, XEXP (x, 0)); | |
2697 | strcat (str, buf1); | |
2698 | break; | |
71dfc51f | 2699 | |
3f76745e JM |
2700 | default: |
2701 | output_operand_lossage ("invalid expression as operand"); | |
2702 | } | |
d291dd49 JM |
2703 | } |
2704 | ||
3f76745e JM |
2705 | /* Convert an address constant to a string, and return a pointer to |
2706 | a copy of the result, located on the heap. */ | |
71dfc51f | 2707 | |
3f76745e JM |
2708 | static char * |
2709 | addr_to_string (x) | |
2710 | rtx x; | |
d291dd49 | 2711 | { |
3f76745e JM |
2712 | char buf[1024]; |
2713 | addr_const_to_string (buf, x); | |
2714 | return xstrdup (buf); | |
d291dd49 JM |
2715 | } |
2716 | ||
956d6950 | 2717 | /* Test if rtl node points to a pseudo register. */ |
71dfc51f | 2718 | |
3f76745e JM |
2719 | static inline int |
2720 | is_pseudo_reg (rtl) | |
2721 | register rtx rtl; | |
d291dd49 | 2722 | { |
3f76745e JM |
2723 | return (((GET_CODE (rtl) == REG) && (REGNO (rtl) >= FIRST_PSEUDO_REGISTER)) |
2724 | || ((GET_CODE (rtl) == SUBREG) | |
2725 | && (REGNO (XEXP (rtl, 0)) >= FIRST_PSEUDO_REGISTER))); | |
d291dd49 JM |
2726 | } |
2727 | ||
3f76745e JM |
2728 | /* Return a reference to a type, with its const and volatile qualifiers |
2729 | removed. */ | |
71dfc51f | 2730 | |
3f76745e JM |
2731 | static inline tree |
2732 | type_main_variant (type) | |
2733 | register tree type; | |
d291dd49 | 2734 | { |
3f76745e | 2735 | type = TYPE_MAIN_VARIANT (type); |
71dfc51f | 2736 | |
3f76745e JM |
2737 | /* There really should be only one main variant among any group of variants |
2738 | of a given type (and all of the MAIN_VARIANT values for all members of | |
2739 | the group should point to that one type) but sometimes the C front-end | |
2740 | messes this up for array types, so we work around that bug here. */ | |
71dfc51f | 2741 | |
3f76745e JM |
2742 | if (TREE_CODE (type) == ARRAY_TYPE) |
2743 | while (type != TYPE_MAIN_VARIANT (type)) | |
2744 | type = TYPE_MAIN_VARIANT (type); | |
2745 | ||
2746 | return type; | |
a3f97cbb JW |
2747 | } |
2748 | ||
3f76745e | 2749 | /* Return non-zero if the given type node represents a tagged type. */ |
71dfc51f RK |
2750 | |
2751 | static inline int | |
3f76745e JM |
2752 | is_tagged_type (type) |
2753 | register tree type; | |
bdb669cb | 2754 | { |
3f76745e | 2755 | register enum tree_code code = TREE_CODE (type); |
71dfc51f | 2756 | |
3f76745e JM |
2757 | return (code == RECORD_TYPE || code == UNION_TYPE |
2758 | || code == QUAL_UNION_TYPE || code == ENUMERAL_TYPE); | |
bdb669cb JM |
2759 | } |
2760 | ||
3f76745e | 2761 | /* Convert a DIE tag into its string name. */ |
71dfc51f | 2762 | |
3f76745e JM |
2763 | static char * |
2764 | dwarf_tag_name (tag) | |
2765 | register unsigned tag; | |
bdb669cb | 2766 | { |
3f76745e JM |
2767 | switch (tag) |
2768 | { | |
2769 | case DW_TAG_padding: | |
2770 | return "DW_TAG_padding"; | |
2771 | case DW_TAG_array_type: | |
2772 | return "DW_TAG_array_type"; | |
2773 | case DW_TAG_class_type: | |
2774 | return "DW_TAG_class_type"; | |
2775 | case DW_TAG_entry_point: | |
2776 | return "DW_TAG_entry_point"; | |
2777 | case DW_TAG_enumeration_type: | |
2778 | return "DW_TAG_enumeration_type"; | |
2779 | case DW_TAG_formal_parameter: | |
2780 | return "DW_TAG_formal_parameter"; | |
2781 | case DW_TAG_imported_declaration: | |
2782 | return "DW_TAG_imported_declaration"; | |
2783 | case DW_TAG_label: | |
2784 | return "DW_TAG_label"; | |
2785 | case DW_TAG_lexical_block: | |
2786 | return "DW_TAG_lexical_block"; | |
2787 | case DW_TAG_member: | |
2788 | return "DW_TAG_member"; | |
2789 | case DW_TAG_pointer_type: | |
2790 | return "DW_TAG_pointer_type"; | |
2791 | case DW_TAG_reference_type: | |
2792 | return "DW_TAG_reference_type"; | |
2793 | case DW_TAG_compile_unit: | |
2794 | return "DW_TAG_compile_unit"; | |
2795 | case DW_TAG_string_type: | |
2796 | return "DW_TAG_string_type"; | |
2797 | case DW_TAG_structure_type: | |
2798 | return "DW_TAG_structure_type"; | |
2799 | case DW_TAG_subroutine_type: | |
2800 | return "DW_TAG_subroutine_type"; | |
2801 | case DW_TAG_typedef: | |
2802 | return "DW_TAG_typedef"; | |
2803 | case DW_TAG_union_type: | |
2804 | return "DW_TAG_union_type"; | |
2805 | case DW_TAG_unspecified_parameters: | |
2806 | return "DW_TAG_unspecified_parameters"; | |
2807 | case DW_TAG_variant: | |
2808 | return "DW_TAG_variant"; | |
2809 | case DW_TAG_common_block: | |
2810 | return "DW_TAG_common_block"; | |
2811 | case DW_TAG_common_inclusion: | |
2812 | return "DW_TAG_common_inclusion"; | |
2813 | case DW_TAG_inheritance: | |
2814 | return "DW_TAG_inheritance"; | |
2815 | case DW_TAG_inlined_subroutine: | |
2816 | return "DW_TAG_inlined_subroutine"; | |
2817 | case DW_TAG_module: | |
2818 | return "DW_TAG_module"; | |
2819 | case DW_TAG_ptr_to_member_type: | |
2820 | return "DW_TAG_ptr_to_member_type"; | |
2821 | case DW_TAG_set_type: | |
2822 | return "DW_TAG_set_type"; | |
2823 | case DW_TAG_subrange_type: | |
2824 | return "DW_TAG_subrange_type"; | |
2825 | case DW_TAG_with_stmt: | |
2826 | return "DW_TAG_with_stmt"; | |
2827 | case DW_TAG_access_declaration: | |
2828 | return "DW_TAG_access_declaration"; | |
2829 | case DW_TAG_base_type: | |
2830 | return "DW_TAG_base_type"; | |
2831 | case DW_TAG_catch_block: | |
2832 | return "DW_TAG_catch_block"; | |
2833 | case DW_TAG_const_type: | |
2834 | return "DW_TAG_const_type"; | |
2835 | case DW_TAG_constant: | |
2836 | return "DW_TAG_constant"; | |
2837 | case DW_TAG_enumerator: | |
2838 | return "DW_TAG_enumerator"; | |
2839 | case DW_TAG_file_type: | |
2840 | return "DW_TAG_file_type"; | |
2841 | case DW_TAG_friend: | |
2842 | return "DW_TAG_friend"; | |
2843 | case DW_TAG_namelist: | |
2844 | return "DW_TAG_namelist"; | |
2845 | case DW_TAG_namelist_item: | |
2846 | return "DW_TAG_namelist_item"; | |
2847 | case DW_TAG_packed_type: | |
2848 | return "DW_TAG_packed_type"; | |
2849 | case DW_TAG_subprogram: | |
2850 | return "DW_TAG_subprogram"; | |
2851 | case DW_TAG_template_type_param: | |
2852 | return "DW_TAG_template_type_param"; | |
2853 | case DW_TAG_template_value_param: | |
2854 | return "DW_TAG_template_value_param"; | |
2855 | case DW_TAG_thrown_type: | |
2856 | return "DW_TAG_thrown_type"; | |
2857 | case DW_TAG_try_block: | |
2858 | return "DW_TAG_try_block"; | |
2859 | case DW_TAG_variant_part: | |
2860 | return "DW_TAG_variant_part"; | |
2861 | case DW_TAG_variable: | |
2862 | return "DW_TAG_variable"; | |
2863 | case DW_TAG_volatile_type: | |
2864 | return "DW_TAG_volatile_type"; | |
2865 | case DW_TAG_MIPS_loop: | |
2866 | return "DW_TAG_MIPS_loop"; | |
2867 | case DW_TAG_format_label: | |
2868 | return "DW_TAG_format_label"; | |
2869 | case DW_TAG_function_template: | |
2870 | return "DW_TAG_function_template"; | |
2871 | case DW_TAG_class_template: | |
2872 | return "DW_TAG_class_template"; | |
2873 | default: | |
2874 | return "DW_TAG_<unknown>"; | |
2875 | } | |
bdb669cb | 2876 | } |
a3f97cbb | 2877 | |
3f76745e | 2878 | /* Convert a DWARF attribute code into its string name. */ |
71dfc51f | 2879 | |
3f76745e JM |
2880 | static char * |
2881 | dwarf_attr_name (attr) | |
2882 | register unsigned attr; | |
4b674448 | 2883 | { |
3f76745e | 2884 | switch (attr) |
4b674448 | 2885 | { |
3f76745e JM |
2886 | case DW_AT_sibling: |
2887 | return "DW_AT_sibling"; | |
2888 | case DW_AT_location: | |
2889 | return "DW_AT_location"; | |
2890 | case DW_AT_name: | |
2891 | return "DW_AT_name"; | |
2892 | case DW_AT_ordering: | |
2893 | return "DW_AT_ordering"; | |
2894 | case DW_AT_subscr_data: | |
2895 | return "DW_AT_subscr_data"; | |
2896 | case DW_AT_byte_size: | |
2897 | return "DW_AT_byte_size"; | |
2898 | case DW_AT_bit_offset: | |
2899 | return "DW_AT_bit_offset"; | |
2900 | case DW_AT_bit_size: | |
2901 | return "DW_AT_bit_size"; | |
2902 | case DW_AT_element_list: | |
2903 | return "DW_AT_element_list"; | |
2904 | case DW_AT_stmt_list: | |
2905 | return "DW_AT_stmt_list"; | |
2906 | case DW_AT_low_pc: | |
2907 | return "DW_AT_low_pc"; | |
2908 | case DW_AT_high_pc: | |
2909 | return "DW_AT_high_pc"; | |
2910 | case DW_AT_language: | |
2911 | return "DW_AT_language"; | |
2912 | case DW_AT_member: | |
2913 | return "DW_AT_member"; | |
2914 | case DW_AT_discr: | |
2915 | return "DW_AT_discr"; | |
2916 | case DW_AT_discr_value: | |
2917 | return "DW_AT_discr_value"; | |
2918 | case DW_AT_visibility: | |
2919 | return "DW_AT_visibility"; | |
2920 | case DW_AT_import: | |
2921 | return "DW_AT_import"; | |
2922 | case DW_AT_string_length: | |
2923 | return "DW_AT_string_length"; | |
2924 | case DW_AT_common_reference: | |
2925 | return "DW_AT_common_reference"; | |
2926 | case DW_AT_comp_dir: | |
2927 | return "DW_AT_comp_dir"; | |
2928 | case DW_AT_const_value: | |
2929 | return "DW_AT_const_value"; | |
2930 | case DW_AT_containing_type: | |
2931 | return "DW_AT_containing_type"; | |
2932 | case DW_AT_default_value: | |
2933 | return "DW_AT_default_value"; | |
2934 | case DW_AT_inline: | |
2935 | return "DW_AT_inline"; | |
2936 | case DW_AT_is_optional: | |
2937 | return "DW_AT_is_optional"; | |
2938 | case DW_AT_lower_bound: | |
2939 | return "DW_AT_lower_bound"; | |
2940 | case DW_AT_producer: | |
2941 | return "DW_AT_producer"; | |
2942 | case DW_AT_prototyped: | |
2943 | return "DW_AT_prototyped"; | |
2944 | case DW_AT_return_addr: | |
2945 | return "DW_AT_return_addr"; | |
2946 | case DW_AT_start_scope: | |
2947 | return "DW_AT_start_scope"; | |
2948 | case DW_AT_stride_size: | |
2949 | return "DW_AT_stride_size"; | |
2950 | case DW_AT_upper_bound: | |
2951 | return "DW_AT_upper_bound"; | |
2952 | case DW_AT_abstract_origin: | |
2953 | return "DW_AT_abstract_origin"; | |
2954 | case DW_AT_accessibility: | |
2955 | return "DW_AT_accessibility"; | |
2956 | case DW_AT_address_class: | |
2957 | return "DW_AT_address_class"; | |
2958 | case DW_AT_artificial: | |
2959 | return "DW_AT_artificial"; | |
2960 | case DW_AT_base_types: | |
2961 | return "DW_AT_base_types"; | |
2962 | case DW_AT_calling_convention: | |
2963 | return "DW_AT_calling_convention"; | |
2964 | case DW_AT_count: | |
2965 | return "DW_AT_count"; | |
2966 | case DW_AT_data_member_location: | |
2967 | return "DW_AT_data_member_location"; | |
2968 | case DW_AT_decl_column: | |
2969 | return "DW_AT_decl_column"; | |
2970 | case DW_AT_decl_file: | |
2971 | return "DW_AT_decl_file"; | |
2972 | case DW_AT_decl_line: | |
2973 | return "DW_AT_decl_line"; | |
2974 | case DW_AT_declaration: | |
2975 | return "DW_AT_declaration"; | |
2976 | case DW_AT_discr_list: | |
2977 | return "DW_AT_discr_list"; | |
2978 | case DW_AT_encoding: | |
2979 | return "DW_AT_encoding"; | |
2980 | case DW_AT_external: | |
2981 | return "DW_AT_external"; | |
2982 | case DW_AT_frame_base: | |
2983 | return "DW_AT_frame_base"; | |
2984 | case DW_AT_friend: | |
2985 | return "DW_AT_friend"; | |
2986 | case DW_AT_identifier_case: | |
2987 | return "DW_AT_identifier_case"; | |
2988 | case DW_AT_macro_info: | |
2989 | return "DW_AT_macro_info"; | |
2990 | case DW_AT_namelist_items: | |
2991 | return "DW_AT_namelist_items"; | |
2992 | case DW_AT_priority: | |
2993 | return "DW_AT_priority"; | |
2994 | case DW_AT_segment: | |
2995 | return "DW_AT_segment"; | |
2996 | case DW_AT_specification: | |
2997 | return "DW_AT_specification"; | |
2998 | case DW_AT_static_link: | |
2999 | return "DW_AT_static_link"; | |
3000 | case DW_AT_type: | |
3001 | return "DW_AT_type"; | |
3002 | case DW_AT_use_location: | |
3003 | return "DW_AT_use_location"; | |
3004 | case DW_AT_variable_parameter: | |
3005 | return "DW_AT_variable_parameter"; | |
3006 | case DW_AT_virtuality: | |
3007 | return "DW_AT_virtuality"; | |
3008 | case DW_AT_vtable_elem_location: | |
3009 | return "DW_AT_vtable_elem_location"; | |
71dfc51f | 3010 | |
3f76745e JM |
3011 | case DW_AT_MIPS_fde: |
3012 | return "DW_AT_MIPS_fde"; | |
3013 | case DW_AT_MIPS_loop_begin: | |
3014 | return "DW_AT_MIPS_loop_begin"; | |
3015 | case DW_AT_MIPS_tail_loop_begin: | |
3016 | return "DW_AT_MIPS_tail_loop_begin"; | |
3017 | case DW_AT_MIPS_epilog_begin: | |
3018 | return "DW_AT_MIPS_epilog_begin"; | |
3019 | case DW_AT_MIPS_loop_unroll_factor: | |
3020 | return "DW_AT_MIPS_loop_unroll_factor"; | |
3021 | case DW_AT_MIPS_software_pipeline_depth: | |
3022 | return "DW_AT_MIPS_software_pipeline_depth"; | |
3023 | case DW_AT_MIPS_linkage_name: | |
3024 | return "DW_AT_MIPS_linkage_name"; | |
3025 | case DW_AT_MIPS_stride: | |
3026 | return "DW_AT_MIPS_stride"; | |
3027 | case DW_AT_MIPS_abstract_name: | |
3028 | return "DW_AT_MIPS_abstract_name"; | |
3029 | case DW_AT_MIPS_clone_origin: | |
3030 | return "DW_AT_MIPS_clone_origin"; | |
3031 | case DW_AT_MIPS_has_inlines: | |
3032 | return "DW_AT_MIPS_has_inlines"; | |
71dfc51f | 3033 | |
3f76745e JM |
3034 | case DW_AT_sf_names: |
3035 | return "DW_AT_sf_names"; | |
3036 | case DW_AT_src_info: | |
3037 | return "DW_AT_src_info"; | |
3038 | case DW_AT_mac_info: | |
3039 | return "DW_AT_mac_info"; | |
3040 | case DW_AT_src_coords: | |
3041 | return "DW_AT_src_coords"; | |
3042 | case DW_AT_body_begin: | |
3043 | return "DW_AT_body_begin"; | |
3044 | case DW_AT_body_end: | |
3045 | return "DW_AT_body_end"; | |
3046 | default: | |
3047 | return "DW_AT_<unknown>"; | |
4b674448 JM |
3048 | } |
3049 | } | |
3050 | ||
3f76745e | 3051 | /* Convert a DWARF value form code into its string name. */ |
71dfc51f | 3052 | |
3f76745e JM |
3053 | static char * |
3054 | dwarf_form_name (form) | |
3055 | register unsigned form; | |
4b674448 | 3056 | { |
3f76745e | 3057 | switch (form) |
4b674448 | 3058 | { |
3f76745e JM |
3059 | case DW_FORM_addr: |
3060 | return "DW_FORM_addr"; | |
3061 | case DW_FORM_block2: | |
3062 | return "DW_FORM_block2"; | |
3063 | case DW_FORM_block4: | |
3064 | return "DW_FORM_block4"; | |
3065 | case DW_FORM_data2: | |
3066 | return "DW_FORM_data2"; | |
3067 | case DW_FORM_data4: | |
3068 | return "DW_FORM_data4"; | |
3069 | case DW_FORM_data8: | |
3070 | return "DW_FORM_data8"; | |
3071 | case DW_FORM_string: | |
3072 | return "DW_FORM_string"; | |
3073 | case DW_FORM_block: | |
3074 | return "DW_FORM_block"; | |
3075 | case DW_FORM_block1: | |
3076 | return "DW_FORM_block1"; | |
3077 | case DW_FORM_data1: | |
3078 | return "DW_FORM_data1"; | |
3079 | case DW_FORM_flag: | |
3080 | return "DW_FORM_flag"; | |
3081 | case DW_FORM_sdata: | |
3082 | return "DW_FORM_sdata"; | |
3083 | case DW_FORM_strp: | |
3084 | return "DW_FORM_strp"; | |
3085 | case DW_FORM_udata: | |
3086 | return "DW_FORM_udata"; | |
3087 | case DW_FORM_ref_addr: | |
3088 | return "DW_FORM_ref_addr"; | |
3089 | case DW_FORM_ref1: | |
3090 | return "DW_FORM_ref1"; | |
3091 | case DW_FORM_ref2: | |
3092 | return "DW_FORM_ref2"; | |
3093 | case DW_FORM_ref4: | |
3094 | return "DW_FORM_ref4"; | |
3095 | case DW_FORM_ref8: | |
3096 | return "DW_FORM_ref8"; | |
3097 | case DW_FORM_ref_udata: | |
3098 | return "DW_FORM_ref_udata"; | |
3099 | case DW_FORM_indirect: | |
3100 | return "DW_FORM_indirect"; | |
3101 | default: | |
3102 | return "DW_FORM_<unknown>"; | |
4b674448 JM |
3103 | } |
3104 | } | |
3105 | ||
3f76745e | 3106 | /* Convert a DWARF stack opcode into its string name. */ |
71dfc51f | 3107 | |
3f76745e JM |
3108 | static char * |
3109 | dwarf_stack_op_name (op) | |
3110 | register unsigned op; | |
a3f97cbb | 3111 | { |
3f76745e | 3112 | switch (op) |
a3f97cbb | 3113 | { |
3f76745e JM |
3114 | case DW_OP_addr: |
3115 | return "DW_OP_addr"; | |
3116 | case DW_OP_deref: | |
3117 | return "DW_OP_deref"; | |
3118 | case DW_OP_const1u: | |
3119 | return "DW_OP_const1u"; | |
3120 | case DW_OP_const1s: | |
3121 | return "DW_OP_const1s"; | |
3122 | case DW_OP_const2u: | |
3123 | return "DW_OP_const2u"; | |
3124 | case DW_OP_const2s: | |
3125 | return "DW_OP_const2s"; | |
3126 | case DW_OP_const4u: | |
3127 | return "DW_OP_const4u"; | |
3128 | case DW_OP_const4s: | |
3129 | return "DW_OP_const4s"; | |
3130 | case DW_OP_const8u: | |
3131 | return "DW_OP_const8u"; | |
3132 | case DW_OP_const8s: | |
3133 | return "DW_OP_const8s"; | |
3134 | case DW_OP_constu: | |
3135 | return "DW_OP_constu"; | |
3136 | case DW_OP_consts: | |
3137 | return "DW_OP_consts"; | |
3138 | case DW_OP_dup: | |
3139 | return "DW_OP_dup"; | |
3140 | case DW_OP_drop: | |
3141 | return "DW_OP_drop"; | |
3142 | case DW_OP_over: | |
3143 | return "DW_OP_over"; | |
3144 | case DW_OP_pick: | |
3145 | return "DW_OP_pick"; | |
3146 | case DW_OP_swap: | |
3147 | return "DW_OP_swap"; | |
3148 | case DW_OP_rot: | |
3149 | return "DW_OP_rot"; | |
3150 | case DW_OP_xderef: | |
3151 | return "DW_OP_xderef"; | |
3152 | case DW_OP_abs: | |
3153 | return "DW_OP_abs"; | |
3154 | case DW_OP_and: | |
3155 | return "DW_OP_and"; | |
3156 | case DW_OP_div: | |
3157 | return "DW_OP_div"; | |
3158 | case DW_OP_minus: | |
3159 | return "DW_OP_minus"; | |
3160 | case DW_OP_mod: | |
3161 | return "DW_OP_mod"; | |
3162 | case DW_OP_mul: | |
3163 | return "DW_OP_mul"; | |
3164 | case DW_OP_neg: | |
3165 | return "DW_OP_neg"; | |
3166 | case DW_OP_not: | |
3167 | return "DW_OP_not"; | |
3168 | case DW_OP_or: | |
3169 | return "DW_OP_or"; | |
3170 | case DW_OP_plus: | |
3171 | return "DW_OP_plus"; | |
3172 | case DW_OP_plus_uconst: | |
3173 | return "DW_OP_plus_uconst"; | |
3174 | case DW_OP_shl: | |
3175 | return "DW_OP_shl"; | |
3176 | case DW_OP_shr: | |
3177 | return "DW_OP_shr"; | |
3178 | case DW_OP_shra: | |
3179 | return "DW_OP_shra"; | |
3180 | case DW_OP_xor: | |
3181 | return "DW_OP_xor"; | |
3182 | case DW_OP_bra: | |
3183 | return "DW_OP_bra"; | |
3184 | case DW_OP_eq: | |
3185 | return "DW_OP_eq"; | |
3186 | case DW_OP_ge: | |
3187 | return "DW_OP_ge"; | |
3188 | case DW_OP_gt: | |
3189 | return "DW_OP_gt"; | |
3190 | case DW_OP_le: | |
3191 | return "DW_OP_le"; | |
3192 | case DW_OP_lt: | |
3193 | return "DW_OP_lt"; | |
3194 | case DW_OP_ne: | |
3195 | return "DW_OP_ne"; | |
3196 | case DW_OP_skip: | |
3197 | return "DW_OP_skip"; | |
3198 | case DW_OP_lit0: | |
3199 | return "DW_OP_lit0"; | |
3200 | case DW_OP_lit1: | |
3201 | return "DW_OP_lit1"; | |
3202 | case DW_OP_lit2: | |
3203 | return "DW_OP_lit2"; | |
3204 | case DW_OP_lit3: | |
3205 | return "DW_OP_lit3"; | |
3206 | case DW_OP_lit4: | |
3207 | return "DW_OP_lit4"; | |
3208 | case DW_OP_lit5: | |
3209 | return "DW_OP_lit5"; | |
3210 | case DW_OP_lit6: | |
3211 | return "DW_OP_lit6"; | |
3212 | case DW_OP_lit7: | |
3213 | return "DW_OP_lit7"; | |
3214 | case DW_OP_lit8: | |
3215 | return "DW_OP_lit8"; | |
3216 | case DW_OP_lit9: | |
3217 | return "DW_OP_lit9"; | |
3218 | case DW_OP_lit10: | |
3219 | return "DW_OP_lit10"; | |
3220 | case DW_OP_lit11: | |
3221 | return "DW_OP_lit11"; | |
3222 | case DW_OP_lit12: | |
3223 | return "DW_OP_lit12"; | |
3224 | case DW_OP_lit13: | |
3225 | return "DW_OP_lit13"; | |
3226 | case DW_OP_lit14: | |
3227 | return "DW_OP_lit14"; | |
3228 | case DW_OP_lit15: | |
3229 | return "DW_OP_lit15"; | |
3230 | case DW_OP_lit16: | |
3231 | return "DW_OP_lit16"; | |
3232 | case DW_OP_lit17: | |
3233 | return "DW_OP_lit17"; | |
3234 | case DW_OP_lit18: | |
3235 | return "DW_OP_lit18"; | |
3236 | case DW_OP_lit19: | |
3237 | return "DW_OP_lit19"; | |
3238 | case DW_OP_lit20: | |
3239 | return "DW_OP_lit20"; | |
3240 | case DW_OP_lit21: | |
3241 | return "DW_OP_lit21"; | |
3242 | case DW_OP_lit22: | |
3243 | return "DW_OP_lit22"; | |
3244 | case DW_OP_lit23: | |
3245 | return "DW_OP_lit23"; | |
3246 | case DW_OP_lit24: | |
3247 | return "DW_OP_lit24"; | |
3248 | case DW_OP_lit25: | |
3249 | return "DW_OP_lit25"; | |
3250 | case DW_OP_lit26: | |
3251 | return "DW_OP_lit26"; | |
3252 | case DW_OP_lit27: | |
3253 | return "DW_OP_lit27"; | |
3254 | case DW_OP_lit28: | |
3255 | return "DW_OP_lit28"; | |
3256 | case DW_OP_lit29: | |
3257 | return "DW_OP_lit29"; | |
3258 | case DW_OP_lit30: | |
3259 | return "DW_OP_lit30"; | |
3260 | case DW_OP_lit31: | |
3261 | return "DW_OP_lit31"; | |
3262 | case DW_OP_reg0: | |
3263 | return "DW_OP_reg0"; | |
3264 | case DW_OP_reg1: | |
3265 | return "DW_OP_reg1"; | |
3266 | case DW_OP_reg2: | |
3267 | return "DW_OP_reg2"; | |
3268 | case DW_OP_reg3: | |
3269 | return "DW_OP_reg3"; | |
3270 | case DW_OP_reg4: | |
3271 | return "DW_OP_reg4"; | |
3272 | case DW_OP_reg5: | |
3273 | return "DW_OP_reg5"; | |
3274 | case DW_OP_reg6: | |
3275 | return "DW_OP_reg6"; | |
3276 | case DW_OP_reg7: | |
3277 | return "DW_OP_reg7"; | |
3278 | case DW_OP_reg8: | |
3279 | return "DW_OP_reg8"; | |
3280 | case DW_OP_reg9: | |
3281 | return "DW_OP_reg9"; | |
3282 | case DW_OP_reg10: | |
3283 | return "DW_OP_reg10"; | |
3284 | case DW_OP_reg11: | |
3285 | return "DW_OP_reg11"; | |
3286 | case DW_OP_reg12: | |
3287 | return "DW_OP_reg12"; | |
3288 | case DW_OP_reg13: | |
3289 | return "DW_OP_reg13"; | |
3290 | case DW_OP_reg14: | |
3291 | return "DW_OP_reg14"; | |
3292 | case DW_OP_reg15: | |
3293 | return "DW_OP_reg15"; | |
3294 | case DW_OP_reg16: | |
3295 | return "DW_OP_reg16"; | |
3296 | case DW_OP_reg17: | |
3297 | return "DW_OP_reg17"; | |
3298 | case DW_OP_reg18: | |
3299 | return "DW_OP_reg18"; | |
3300 | case DW_OP_reg19: | |
3301 | return "DW_OP_reg19"; | |
3302 | case DW_OP_reg20: | |
3303 | return "DW_OP_reg20"; | |
3304 | case DW_OP_reg21: | |
3305 | return "DW_OP_reg21"; | |
3306 | case DW_OP_reg22: | |
3307 | return "DW_OP_reg22"; | |
3308 | case DW_OP_reg23: | |
3309 | return "DW_OP_reg23"; | |
3310 | case DW_OP_reg24: | |
3311 | return "DW_OP_reg24"; | |
3312 | case DW_OP_reg25: | |
3313 | return "DW_OP_reg25"; | |
3314 | case DW_OP_reg26: | |
3315 | return "DW_OP_reg26"; | |
3316 | case DW_OP_reg27: | |
3317 | return "DW_OP_reg27"; | |
3318 | case DW_OP_reg28: | |
3319 | return "DW_OP_reg28"; | |
3320 | case DW_OP_reg29: | |
3321 | return "DW_OP_reg29"; | |
3322 | case DW_OP_reg30: | |
3323 | return "DW_OP_reg30"; | |
3324 | case DW_OP_reg31: | |
3325 | return "DW_OP_reg31"; | |
3326 | case DW_OP_breg0: | |
3327 | return "DW_OP_breg0"; | |
3328 | case DW_OP_breg1: | |
3329 | return "DW_OP_breg1"; | |
3330 | case DW_OP_breg2: | |
3331 | return "DW_OP_breg2"; | |
3332 | case DW_OP_breg3: | |
3333 | return "DW_OP_breg3"; | |
3334 | case DW_OP_breg4: | |
3335 | return "DW_OP_breg4"; | |
3336 | case DW_OP_breg5: | |
3337 | return "DW_OP_breg5"; | |
3338 | case DW_OP_breg6: | |
3339 | return "DW_OP_breg6"; | |
3340 | case DW_OP_breg7: | |
3341 | return "DW_OP_breg7"; | |
3342 | case DW_OP_breg8: | |
3343 | return "DW_OP_breg8"; | |
3344 | case DW_OP_breg9: | |
3345 | return "DW_OP_breg9"; | |
3346 | case DW_OP_breg10: | |
3347 | return "DW_OP_breg10"; | |
3348 | case DW_OP_breg11: | |
3349 | return "DW_OP_breg11"; | |
3350 | case DW_OP_breg12: | |
3351 | return "DW_OP_breg12"; | |
3352 | case DW_OP_breg13: | |
3353 | return "DW_OP_breg13"; | |
3354 | case DW_OP_breg14: | |
3355 | return "DW_OP_breg14"; | |
3356 | case DW_OP_breg15: | |
3357 | return "DW_OP_breg15"; | |
3358 | case DW_OP_breg16: | |
3359 | return "DW_OP_breg16"; | |
3360 | case DW_OP_breg17: | |
3361 | return "DW_OP_breg17"; | |
3362 | case DW_OP_breg18: | |
3363 | return "DW_OP_breg18"; | |
3364 | case DW_OP_breg19: | |
3365 | return "DW_OP_breg19"; | |
3366 | case DW_OP_breg20: | |
3367 | return "DW_OP_breg20"; | |
3368 | case DW_OP_breg21: | |
3369 | return "DW_OP_breg21"; | |
3370 | case DW_OP_breg22: | |
3371 | return "DW_OP_breg22"; | |
3372 | case DW_OP_breg23: | |
3373 | return "DW_OP_breg23"; | |
3374 | case DW_OP_breg24: | |
3375 | return "DW_OP_breg24"; | |
3376 | case DW_OP_breg25: | |
3377 | return "DW_OP_breg25"; | |
3378 | case DW_OP_breg26: | |
3379 | return "DW_OP_breg26"; | |
3380 | case DW_OP_breg27: | |
3381 | return "DW_OP_breg27"; | |
3382 | case DW_OP_breg28: | |
3383 | return "DW_OP_breg28"; | |
3384 | case DW_OP_breg29: | |
3385 | return "DW_OP_breg29"; | |
3386 | case DW_OP_breg30: | |
3387 | return "DW_OP_breg30"; | |
3388 | case DW_OP_breg31: | |
3389 | return "DW_OP_breg31"; | |
3390 | case DW_OP_regx: | |
3391 | return "DW_OP_regx"; | |
3392 | case DW_OP_fbreg: | |
3393 | return "DW_OP_fbreg"; | |
3394 | case DW_OP_bregx: | |
3395 | return "DW_OP_bregx"; | |
3396 | case DW_OP_piece: | |
3397 | return "DW_OP_piece"; | |
3398 | case DW_OP_deref_size: | |
3399 | return "DW_OP_deref_size"; | |
3400 | case DW_OP_xderef_size: | |
3401 | return "DW_OP_xderef_size"; | |
3402 | case DW_OP_nop: | |
3403 | return "DW_OP_nop"; | |
3404 | default: | |
3405 | return "OP_<unknown>"; | |
a3f97cbb JW |
3406 | } |
3407 | } | |
3408 | ||
3f76745e | 3409 | /* Convert a DWARF type code into its string name. */ |
71dfc51f | 3410 | |
3f76745e JM |
3411 | static char * |
3412 | dwarf_type_encoding_name (enc) | |
3413 | register unsigned enc; | |
a3f97cbb | 3414 | { |
3f76745e | 3415 | switch (enc) |
a3f97cbb | 3416 | { |
3f76745e JM |
3417 | case DW_ATE_address: |
3418 | return "DW_ATE_address"; | |
3419 | case DW_ATE_boolean: | |
3420 | return "DW_ATE_boolean"; | |
3421 | case DW_ATE_complex_float: | |
3422 | return "DW_ATE_complex_float"; | |
3423 | case DW_ATE_float: | |
3424 | return "DW_ATE_float"; | |
3425 | case DW_ATE_signed: | |
3426 | return "DW_ATE_signed"; | |
3427 | case DW_ATE_signed_char: | |
3428 | return "DW_ATE_signed_char"; | |
3429 | case DW_ATE_unsigned: | |
3430 | return "DW_ATE_unsigned"; | |
3431 | case DW_ATE_unsigned_char: | |
3432 | return "DW_ATE_unsigned_char"; | |
3433 | default: | |
3434 | return "DW_ATE_<unknown>"; | |
3435 | } | |
a3f97cbb | 3436 | } |
3f76745e JM |
3437 | \f |
3438 | /* Determine the "ultimate origin" of a decl. The decl may be an inlined | |
3439 | instance of an inlined instance of a decl which is local to an inline | |
3440 | function, so we have to trace all of the way back through the origin chain | |
3441 | to find out what sort of node actually served as the original seed for the | |
3442 | given block. */ | |
a3f97cbb | 3443 | |
3f76745e JM |
3444 | static tree |
3445 | decl_ultimate_origin (decl) | |
3446 | register tree decl; | |
a3f97cbb | 3447 | { |
3f76745e | 3448 | register tree immediate_origin = DECL_ABSTRACT_ORIGIN (decl); |
71dfc51f | 3449 | |
3f76745e JM |
3450 | if (immediate_origin == NULL_TREE) |
3451 | return NULL_TREE; | |
3452 | else | |
3453 | { | |
3454 | register tree ret_val; | |
3455 | register tree lookahead = immediate_origin; | |
71dfc51f | 3456 | |
3f76745e JM |
3457 | do |
3458 | { | |
3459 | ret_val = lookahead; | |
3460 | lookahead = DECL_ABSTRACT_ORIGIN (ret_val); | |
3461 | } | |
3462 | while (lookahead != NULL && lookahead != ret_val); | |
3463 | ||
3464 | return ret_val; | |
3465 | } | |
a3f97cbb JW |
3466 | } |
3467 | ||
3f76745e JM |
3468 | /* Determine the "ultimate origin" of a block. The block may be an inlined |
3469 | instance of an inlined instance of a block which is local to an inline | |
3470 | function, so we have to trace all of the way back through the origin chain | |
3471 | to find out what sort of node actually served as the original seed for the | |
3472 | given block. */ | |
71dfc51f | 3473 | |
3f76745e JM |
3474 | static tree |
3475 | block_ultimate_origin (block) | |
3476 | register tree block; | |
a3f97cbb | 3477 | { |
3f76745e | 3478 | register tree immediate_origin = BLOCK_ABSTRACT_ORIGIN (block); |
71dfc51f | 3479 | |
3f76745e JM |
3480 | if (immediate_origin == NULL_TREE) |
3481 | return NULL_TREE; | |
3482 | else | |
3483 | { | |
3484 | register tree ret_val; | |
3485 | register tree lookahead = immediate_origin; | |
71dfc51f | 3486 | |
3f76745e JM |
3487 | do |
3488 | { | |
3489 | ret_val = lookahead; | |
3490 | lookahead = (TREE_CODE (ret_val) == BLOCK) | |
3491 | ? BLOCK_ABSTRACT_ORIGIN (ret_val) | |
3492 | : NULL; | |
3493 | } | |
3494 | while (lookahead != NULL && lookahead != ret_val); | |
3495 | ||
3496 | return ret_val; | |
3497 | } | |
a3f97cbb JW |
3498 | } |
3499 | ||
3f76745e JM |
3500 | /* Get the class to which DECL belongs, if any. In g++, the DECL_CONTEXT |
3501 | of a virtual function may refer to a base class, so we check the 'this' | |
3502 | parameter. */ | |
71dfc51f | 3503 | |
3f76745e JM |
3504 | static tree |
3505 | decl_class_context (decl) | |
3506 | tree decl; | |
a3f97cbb | 3507 | { |
3f76745e | 3508 | tree context = NULL_TREE; |
71dfc51f | 3509 | |
3f76745e JM |
3510 | if (TREE_CODE (decl) != FUNCTION_DECL || ! DECL_VINDEX (decl)) |
3511 | context = DECL_CONTEXT (decl); | |
3512 | else | |
3513 | context = TYPE_MAIN_VARIANT | |
3514 | (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))))); | |
71dfc51f | 3515 | |
3f76745e JM |
3516 | if (context && TREE_CODE_CLASS (TREE_CODE (context)) != 't') |
3517 | context = NULL_TREE; | |
3518 | ||
3519 | return context; | |
a3f97cbb JW |
3520 | } |
3521 | \f | |
3f76745e | 3522 | /* Add an attribute/value pair to a DIE */ |
71dfc51f RK |
3523 | |
3524 | static inline void | |
3f76745e JM |
3525 | add_dwarf_attr (die, attr) |
3526 | register dw_die_ref die; | |
3527 | register dw_attr_ref attr; | |
a3f97cbb | 3528 | { |
3f76745e | 3529 | if (die != NULL && attr != NULL) |
a3f97cbb | 3530 | { |
3f76745e | 3531 | if (die->die_attr == NULL) |
a3f97cbb | 3532 | { |
3f76745e JM |
3533 | die->die_attr = attr; |
3534 | die->die_attr_last = attr; | |
3535 | } | |
3536 | else | |
3537 | { | |
3538 | die->die_attr_last->dw_attr_next = attr; | |
3539 | die->die_attr_last = attr; | |
a3f97cbb | 3540 | } |
a3f97cbb JW |
3541 | } |
3542 | } | |
3543 | ||
3f76745e | 3544 | /* Add a flag value attribute to a DIE. */ |
71dfc51f | 3545 | |
3f76745e JM |
3546 | static inline void |
3547 | add_AT_flag (die, attr_kind, flag) | |
3548 | register dw_die_ref die; | |
3549 | register enum dwarf_attribute attr_kind; | |
3550 | register unsigned flag; | |
a3f97cbb | 3551 | { |
3f76745e | 3552 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3553 | |
3f76745e JM |
3554 | attr->dw_attr_next = NULL; |
3555 | attr->dw_attr = attr_kind; | |
3556 | attr->dw_attr_val.val_class = dw_val_class_flag; | |
3557 | attr->dw_attr_val.v.val_flag = flag; | |
3558 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3559 | } |
3560 | ||
3f76745e | 3561 | /* Add a signed integer attribute value to a DIE. */ |
71dfc51f | 3562 | |
3f76745e JM |
3563 | static inline void |
3564 | add_AT_int (die, attr_kind, int_val) | |
3565 | register dw_die_ref die; | |
3566 | register enum dwarf_attribute attr_kind; | |
3567 | register long int int_val; | |
a3f97cbb | 3568 | { |
3f76745e JM |
3569 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3570 | ||
3571 | attr->dw_attr_next = NULL; | |
3572 | attr->dw_attr = attr_kind; | |
3573 | attr->dw_attr_val.val_class = dw_val_class_const; | |
3574 | attr->dw_attr_val.v.val_int = int_val; | |
3575 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3576 | } |
3577 | ||
3f76745e | 3578 | /* Add an unsigned integer attribute value to a DIE. */ |
71dfc51f | 3579 | |
3f76745e JM |
3580 | static inline void |
3581 | add_AT_unsigned (die, attr_kind, unsigned_val) | |
3582 | register dw_die_ref die; | |
3583 | register enum dwarf_attribute attr_kind; | |
3584 | register unsigned long unsigned_val; | |
a3f97cbb | 3585 | { |
3f76745e JM |
3586 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3587 | ||
3588 | attr->dw_attr_next = NULL; | |
3589 | attr->dw_attr = attr_kind; | |
3590 | attr->dw_attr_val.val_class = dw_val_class_unsigned_const; | |
3591 | attr->dw_attr_val.v.val_unsigned = unsigned_val; | |
3592 | add_dwarf_attr (die, attr); | |
a3f97cbb | 3593 | } |
71dfc51f | 3594 | |
3f76745e JM |
3595 | /* Add an unsigned double integer attribute value to a DIE. */ |
3596 | ||
3597 | static inline void | |
3598 | add_AT_long_long (die, attr_kind, val_hi, val_low) | |
a3f97cbb | 3599 | register dw_die_ref die; |
3f76745e JM |
3600 | register enum dwarf_attribute attr_kind; |
3601 | register unsigned long val_hi; | |
3602 | register unsigned long val_low; | |
a3f97cbb | 3603 | { |
3f76745e | 3604 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3605 | |
3f76745e JM |
3606 | attr->dw_attr_next = NULL; |
3607 | attr->dw_attr = attr_kind; | |
3608 | attr->dw_attr_val.val_class = dw_val_class_long_long; | |
3609 | attr->dw_attr_val.v.val_long_long.hi = val_hi; | |
3610 | attr->dw_attr_val.v.val_long_long.low = val_low; | |
3611 | add_dwarf_attr (die, attr); | |
3612 | } | |
71dfc51f | 3613 | |
3f76745e | 3614 | /* Add a floating point attribute value to a DIE and return it. */ |
71dfc51f | 3615 | |
3f76745e JM |
3616 | static inline void |
3617 | add_AT_float (die, attr_kind, length, array) | |
3618 | register dw_die_ref die; | |
3619 | register enum dwarf_attribute attr_kind; | |
3620 | register unsigned length; | |
3621 | register long *array; | |
3622 | { | |
3623 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
3624 | ||
3625 | attr->dw_attr_next = NULL; | |
3626 | attr->dw_attr = attr_kind; | |
3627 | attr->dw_attr_val.val_class = dw_val_class_float; | |
3628 | attr->dw_attr_val.v.val_float.length = length; | |
3629 | attr->dw_attr_val.v.val_float.array = array; | |
3630 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3631 | } |
3632 | ||
3f76745e | 3633 | /* Add a string attribute value to a DIE. */ |
71dfc51f | 3634 | |
3f76745e JM |
3635 | static inline void |
3636 | add_AT_string (die, attr_kind, str) | |
a3f97cbb | 3637 | register dw_die_ref die; |
3f76745e JM |
3638 | register enum dwarf_attribute attr_kind; |
3639 | register char *str; | |
a3f97cbb | 3640 | { |
3f76745e | 3641 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3642 | |
3f76745e JM |
3643 | attr->dw_attr_next = NULL; |
3644 | attr->dw_attr = attr_kind; | |
3645 | attr->dw_attr_val.val_class = dw_val_class_str; | |
3646 | attr->dw_attr_val.v.val_str = xstrdup (str); | |
3647 | add_dwarf_attr (die, attr); | |
3648 | } | |
71dfc51f | 3649 | |
3f76745e | 3650 | /* Add a DIE reference attribute value to a DIE. */ |
71dfc51f | 3651 | |
3f76745e JM |
3652 | static inline void |
3653 | add_AT_die_ref (die, attr_kind, targ_die) | |
3654 | register dw_die_ref die; | |
3655 | register enum dwarf_attribute attr_kind; | |
3656 | register dw_die_ref targ_die; | |
3657 | { | |
3658 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3659 | |
3f76745e JM |
3660 | attr->dw_attr_next = NULL; |
3661 | attr->dw_attr = attr_kind; | |
3662 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
3663 | attr->dw_attr_val.v.val_die_ref = targ_die; | |
3664 | add_dwarf_attr (die, attr); | |
3665 | } | |
b1ccbc24 | 3666 | |
3f76745e | 3667 | /* Add an FDE reference attribute value to a DIE. */ |
b1ccbc24 | 3668 | |
3f76745e JM |
3669 | static inline void |
3670 | add_AT_fde_ref (die, attr_kind, targ_fde) | |
3671 | register dw_die_ref die; | |
3672 | register enum dwarf_attribute attr_kind; | |
3673 | register unsigned targ_fde; | |
3674 | { | |
3675 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
b1ccbc24 | 3676 | |
3f76745e JM |
3677 | attr->dw_attr_next = NULL; |
3678 | attr->dw_attr = attr_kind; | |
3679 | attr->dw_attr_val.val_class = dw_val_class_fde_ref; | |
3680 | attr->dw_attr_val.v.val_fde_index = targ_fde; | |
3681 | add_dwarf_attr (die, attr); | |
a3f97cbb | 3682 | } |
71dfc51f | 3683 | |
3f76745e | 3684 | /* Add a location description attribute value to a DIE. */ |
71dfc51f | 3685 | |
3f76745e JM |
3686 | static inline void |
3687 | add_AT_loc (die, attr_kind, loc) | |
3688 | register dw_die_ref die; | |
3689 | register enum dwarf_attribute attr_kind; | |
3690 | register dw_loc_descr_ref loc; | |
3691 | { | |
3692 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3693 | |
3f76745e JM |
3694 | attr->dw_attr_next = NULL; |
3695 | attr->dw_attr = attr_kind; | |
3696 | attr->dw_attr_val.val_class = dw_val_class_loc; | |
3697 | attr->dw_attr_val.v.val_loc = loc; | |
3698 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3699 | } |
3700 | ||
3f76745e | 3701 | /* Add an address constant attribute value to a DIE. */ |
71dfc51f | 3702 | |
3f76745e JM |
3703 | static inline void |
3704 | add_AT_addr (die, attr_kind, addr) | |
3705 | register dw_die_ref die; | |
3706 | register enum dwarf_attribute attr_kind; | |
3707 | char *addr; | |
a3f97cbb | 3708 | { |
3f76745e | 3709 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3710 | |
3f76745e JM |
3711 | attr->dw_attr_next = NULL; |
3712 | attr->dw_attr = attr_kind; | |
3713 | attr->dw_attr_val.val_class = dw_val_class_addr; | |
3714 | attr->dw_attr_val.v.val_addr = addr; | |
3715 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3716 | } |
3717 | ||
3f76745e | 3718 | /* Add a label identifier attribute value to a DIE. */ |
71dfc51f | 3719 | |
3f76745e JM |
3720 | static inline void |
3721 | add_AT_lbl_id (die, attr_kind, lbl_id) | |
3722 | register dw_die_ref die; | |
3723 | register enum dwarf_attribute attr_kind; | |
3724 | register char *lbl_id; | |
a3f97cbb | 3725 | { |
3f76745e | 3726 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3727 | |
3f76745e JM |
3728 | attr->dw_attr_next = NULL; |
3729 | attr->dw_attr = attr_kind; | |
3730 | attr->dw_attr_val.val_class = dw_val_class_lbl_id; | |
3731 | attr->dw_attr_val.v.val_lbl_id = xstrdup (lbl_id); | |
3732 | add_dwarf_attr (die, attr); | |
3733 | } | |
71dfc51f | 3734 | |
3f76745e JM |
3735 | /* Add a section offset attribute value to a DIE. */ |
3736 | ||
3737 | static inline void | |
3738 | add_AT_section_offset (die, attr_kind, section) | |
3739 | register dw_die_ref die; | |
3740 | register enum dwarf_attribute attr_kind; | |
3741 | register char *section; | |
3742 | { | |
3743 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3744 | |
3f76745e JM |
3745 | attr->dw_attr_next = NULL; |
3746 | attr->dw_attr = attr_kind; | |
3747 | attr->dw_attr_val.val_class = dw_val_class_section_offset; | |
3748 | attr->dw_attr_val.v.val_section = section; | |
3749 | add_dwarf_attr (die, attr); | |
3750 | ||
a3f97cbb JW |
3751 | } |
3752 | ||
3f76745e | 3753 | /* Test if die refers to an external subroutine. */ |
71dfc51f | 3754 | |
3f76745e JM |
3755 | static inline int |
3756 | is_extern_subr_die (die) | |
3757 | register dw_die_ref die; | |
a3f97cbb | 3758 | { |
3f76745e JM |
3759 | register dw_attr_ref a; |
3760 | register int is_subr = FALSE; | |
3761 | register int is_extern = FALSE; | |
71dfc51f | 3762 | |
3f76745e | 3763 | if (die != NULL && die->die_tag == DW_TAG_subprogram) |
a3f97cbb | 3764 | { |
3f76745e JM |
3765 | is_subr = TRUE; |
3766 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
3767 | { | |
3768 | if (a->dw_attr == DW_AT_external | |
3769 | && a->dw_attr_val.val_class == dw_val_class_flag | |
3770 | && a->dw_attr_val.v.val_flag != 0) | |
3771 | { | |
3772 | is_extern = TRUE; | |
3773 | break; | |
3774 | } | |
3775 | } | |
a3f97cbb | 3776 | } |
71dfc51f | 3777 | |
3f76745e | 3778 | return is_subr && is_extern; |
a3f97cbb JW |
3779 | } |
3780 | ||
3f76745e | 3781 | /* Get the attribute of type attr_kind. */ |
71dfc51f | 3782 | |
3f76745e JM |
3783 | static inline dw_attr_ref |
3784 | get_AT (die, attr_kind) | |
3785 | register dw_die_ref die; | |
3786 | register enum dwarf_attribute attr_kind; | |
f37230f0 | 3787 | { |
3f76745e JM |
3788 | register dw_attr_ref a; |
3789 | register dw_die_ref spec = NULL; | |
3790 | ||
3791 | if (die != NULL) | |
3792 | { | |
3793 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
3794 | { | |
3795 | if (a->dw_attr == attr_kind) | |
3796 | return a; | |
71dfc51f | 3797 | |
3f76745e JM |
3798 | if (a->dw_attr == DW_AT_specification |
3799 | || a->dw_attr == DW_AT_abstract_origin) | |
3800 | spec = a->dw_attr_val.v.val_die_ref; | |
3801 | } | |
71dfc51f | 3802 | |
3f76745e JM |
3803 | if (spec) |
3804 | return get_AT (spec, attr_kind); | |
3805 | } | |
3806 | ||
3807 | return NULL; | |
f37230f0 JM |
3808 | } |
3809 | ||
3f76745e JM |
3810 | /* Return the "low pc" attribute value, typically associated with |
3811 | a subprogram DIE. Return null if the "low pc" attribute is | |
3812 | either not prsent, or if it cannot be represented as an | |
3813 | assembler label identifier. */ | |
71dfc51f | 3814 | |
3f76745e JM |
3815 | static inline char * |
3816 | get_AT_low_pc (die) | |
3817 | register dw_die_ref die; | |
7e23cb16 | 3818 | { |
3f76745e | 3819 | register dw_attr_ref a = get_AT (die, DW_AT_low_pc); |
7e23cb16 | 3820 | |
3f76745e JM |
3821 | if (a && a->dw_attr_val.val_class == dw_val_class_lbl_id) |
3822 | return a->dw_attr_val.v.val_lbl_id; | |
7e23cb16 | 3823 | |
3f76745e | 3824 | return NULL; |
7e23cb16 JM |
3825 | } |
3826 | ||
3f76745e JM |
3827 | /* Return the "high pc" attribute value, typically associated with |
3828 | a subprogram DIE. Return null if the "high pc" attribute is | |
3829 | either not prsent, or if it cannot be represented as an | |
3830 | assembler label identifier. */ | |
71dfc51f | 3831 | |
3f76745e JM |
3832 | static inline char * |
3833 | get_AT_hi_pc (die) | |
a3f97cbb JW |
3834 | register dw_die_ref die; |
3835 | { | |
3f76745e | 3836 | register dw_attr_ref a = get_AT (die, DW_AT_high_pc); |
71dfc51f | 3837 | |
3f76745e JM |
3838 | if (a && a->dw_attr_val.val_class == dw_val_class_lbl_id) |
3839 | return a->dw_attr_val.v.val_lbl_id; | |
f37230f0 | 3840 | |
3f76745e JM |
3841 | return NULL; |
3842 | } | |
3843 | ||
3844 | /* Return the value of the string attribute designated by ATTR_KIND, or | |
3845 | NULL if it is not present. */ | |
71dfc51f | 3846 | |
3f76745e JM |
3847 | static inline char * |
3848 | get_AT_string (die, attr_kind) | |
3849 | register dw_die_ref die; | |
3850 | register enum dwarf_attribute attr_kind; | |
3851 | { | |
3852 | register dw_attr_ref a = get_AT (die, attr_kind); | |
3853 | ||
3854 | if (a && a->dw_attr_val.val_class == dw_val_class_str) | |
3855 | return a->dw_attr_val.v.val_str; | |
3856 | ||
3857 | return NULL; | |
a3f97cbb JW |
3858 | } |
3859 | ||
3f76745e JM |
3860 | /* Return the value of the flag attribute designated by ATTR_KIND, or -1 |
3861 | if it is not present. */ | |
71dfc51f | 3862 | |
3f76745e JM |
3863 | static inline int |
3864 | get_AT_flag (die, attr_kind) | |
3865 | register dw_die_ref die; | |
3866 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 3867 | { |
3f76745e | 3868 | register dw_attr_ref a = get_AT (die, attr_kind); |
71dfc51f | 3869 | |
3f76745e JM |
3870 | if (a && a->dw_attr_val.val_class == dw_val_class_flag) |
3871 | return a->dw_attr_val.v.val_flag; | |
71dfc51f | 3872 | |
3f76745e | 3873 | return -1; |
a3f97cbb JW |
3874 | } |
3875 | ||
3f76745e JM |
3876 | /* Return the value of the unsigned attribute designated by ATTR_KIND, or 0 |
3877 | if it is not present. */ | |
71dfc51f | 3878 | |
3f76745e JM |
3879 | static inline unsigned |
3880 | get_AT_unsigned (die, attr_kind) | |
3881 | register dw_die_ref die; | |
3882 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 3883 | { |
3f76745e | 3884 | register dw_attr_ref a = get_AT (die, attr_kind); |
71dfc51f | 3885 | |
3f76745e JM |
3886 | if (a && a->dw_attr_val.val_class == dw_val_class_unsigned_const) |
3887 | return a->dw_attr_val.v.val_unsigned; | |
71dfc51f | 3888 | |
3f76745e JM |
3889 | return 0; |
3890 | } | |
71dfc51f | 3891 | |
3f76745e JM |
3892 | static inline int |
3893 | is_c_family () | |
3894 | { | |
3895 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 3896 | |
3f76745e JM |
3897 | return (lang == DW_LANG_C || lang == DW_LANG_C89 |
3898 | || lang == DW_LANG_C_plus_plus); | |
3899 | } | |
71dfc51f | 3900 | |
3f76745e JM |
3901 | static inline int |
3902 | is_fortran () | |
3903 | { | |
3904 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 3905 | |
3f76745e JM |
3906 | return (lang == DW_LANG_Fortran77 || lang == DW_LANG_Fortran90); |
3907 | } | |
71dfc51f | 3908 | |
3f76745e | 3909 | /* Remove the specified attribute if present. */ |
71dfc51f | 3910 | |
3f76745e JM |
3911 | static inline void |
3912 | remove_AT (die, attr_kind) | |
3913 | register dw_die_ref die; | |
3914 | register enum dwarf_attribute attr_kind; | |
3915 | { | |
3916 | register dw_attr_ref a; | |
3917 | register dw_attr_ref removed = NULL;; | |
a3f97cbb | 3918 | |
3f76745e JM |
3919 | if (die != NULL) |
3920 | { | |
3921 | if (die->die_attr->dw_attr == attr_kind) | |
3922 | { | |
3923 | removed = die->die_attr; | |
3924 | if (die->die_attr_last == die->die_attr) | |
3925 | die->die_attr_last = NULL; | |
71dfc51f | 3926 | |
3f76745e JM |
3927 | die->die_attr = die->die_attr->dw_attr_next; |
3928 | } | |
71dfc51f | 3929 | |
3f76745e JM |
3930 | else |
3931 | for (a = die->die_attr; a->dw_attr_next != NULL; | |
3932 | a = a->dw_attr_next) | |
3933 | if (a->dw_attr_next->dw_attr == attr_kind) | |
3934 | { | |
3935 | removed = a->dw_attr_next; | |
3936 | if (die->die_attr_last == a->dw_attr_next) | |
3937 | die->die_attr_last = a; | |
71dfc51f | 3938 | |
3f76745e JM |
3939 | a->dw_attr_next = a->dw_attr_next->dw_attr_next; |
3940 | break; | |
3941 | } | |
71dfc51f | 3942 | |
3f76745e JM |
3943 | if (removed != 0) |
3944 | free (removed); | |
3945 | } | |
3946 | } | |
71dfc51f | 3947 | |
3f76745e | 3948 | /* Discard the children of this DIE. */ |
71dfc51f | 3949 | |
3f76745e JM |
3950 | static inline void |
3951 | remove_children (die) | |
3952 | register dw_die_ref die; | |
3953 | { | |
3954 | register dw_die_ref child_die = die->die_child; | |
3955 | ||
3956 | die->die_child = NULL; | |
3957 | die->die_child_last = NULL; | |
3958 | ||
3959 | while (child_die != NULL) | |
a3f97cbb | 3960 | { |
3f76745e JM |
3961 | register dw_die_ref tmp_die = child_die; |
3962 | register dw_attr_ref a; | |
71dfc51f | 3963 | |
3f76745e JM |
3964 | child_die = child_die->die_sib; |
3965 | ||
3966 | for (a = tmp_die->die_attr; a != NULL; ) | |
a3f97cbb | 3967 | { |
3f76745e | 3968 | register dw_attr_ref tmp_a = a; |
71dfc51f | 3969 | |
3f76745e JM |
3970 | a = a->dw_attr_next; |
3971 | free (tmp_a); | |
a3f97cbb | 3972 | } |
71dfc51f | 3973 | |
3f76745e JM |
3974 | free (tmp_die); |
3975 | } | |
3976 | } | |
71dfc51f | 3977 | |
3f76745e | 3978 | /* Add a child DIE below its parent. */ |
71dfc51f | 3979 | |
3f76745e JM |
3980 | static inline void |
3981 | add_child_die (die, child_die) | |
3982 | register dw_die_ref die; | |
3983 | register dw_die_ref child_die; | |
3984 | { | |
3985 | if (die != NULL && child_die != NULL) | |
e90b62db | 3986 | { |
3a88cbd1 JL |
3987 | if (die == child_die) |
3988 | abort (); | |
3f76745e JM |
3989 | child_die->die_parent = die; |
3990 | child_die->die_sib = NULL; | |
3991 | ||
3992 | if (die->die_child == NULL) | |
e90b62db | 3993 | { |
3f76745e JM |
3994 | die->die_child = child_die; |
3995 | die->die_child_last = child_die; | |
e90b62db JM |
3996 | } |
3997 | else | |
e90b62db | 3998 | { |
3f76745e JM |
3999 | die->die_child_last->die_sib = child_die; |
4000 | die->die_child_last = child_die; | |
e90b62db | 4001 | } |
3f76745e JM |
4002 | } |
4003 | } | |
4004 | ||
4005 | /* Return a pointer to a newly created DIE node. */ | |
4006 | ||
4007 | static inline dw_die_ref | |
4008 | new_die (tag_value, parent_die) | |
4009 | register enum dwarf_tag tag_value; | |
4010 | register dw_die_ref parent_die; | |
4011 | { | |
4012 | register dw_die_ref die = (dw_die_ref) xmalloc (sizeof (die_node)); | |
4013 | ||
4014 | die->die_tag = tag_value; | |
4015 | die->die_abbrev = 0; | |
4016 | die->die_offset = 0; | |
4017 | die->die_child = NULL; | |
4018 | die->die_parent = NULL; | |
4019 | die->die_sib = NULL; | |
4020 | die->die_child_last = NULL; | |
4021 | die->die_attr = NULL; | |
4022 | die->die_attr_last = NULL; | |
4023 | ||
4024 | if (parent_die != NULL) | |
4025 | add_child_die (parent_die, die); | |
4026 | else | |
ef76d03b JW |
4027 | { |
4028 | limbo_die_node *limbo_node; | |
4029 | ||
4030 | limbo_node = (limbo_die_node *) xmalloc (sizeof (limbo_die_node)); | |
4031 | limbo_node->die = die; | |
4032 | limbo_node->next = limbo_die_list; | |
4033 | limbo_die_list = limbo_node; | |
4034 | } | |
71dfc51f | 4035 | |
3f76745e JM |
4036 | return die; |
4037 | } | |
71dfc51f | 4038 | |
3f76745e | 4039 | /* Return the DIE associated with the given type specifier. */ |
71dfc51f | 4040 | |
3f76745e JM |
4041 | static inline dw_die_ref |
4042 | lookup_type_die (type) | |
4043 | register tree type; | |
4044 | { | |
4045 | return (dw_die_ref) TYPE_SYMTAB_POINTER (type); | |
4046 | } | |
e90b62db | 4047 | |
3f76745e | 4048 | /* Equate a DIE to a given type specifier. */ |
71dfc51f | 4049 | |
3f76745e JM |
4050 | static void |
4051 | equate_type_number_to_die (type, type_die) | |
4052 | register tree type; | |
4053 | register dw_die_ref type_die; | |
4054 | { | |
4055 | TYPE_SYMTAB_POINTER (type) = (char *) type_die; | |
4056 | } | |
71dfc51f | 4057 | |
3f76745e | 4058 | /* Return the DIE associated with a given declaration. */ |
71dfc51f | 4059 | |
3f76745e JM |
4060 | static inline dw_die_ref |
4061 | lookup_decl_die (decl) | |
4062 | register tree decl; | |
4063 | { | |
4064 | register unsigned decl_id = DECL_UID (decl); | |
4065 | ||
4066 | return (decl_id < decl_die_table_in_use | |
4067 | ? decl_die_table[decl_id] : NULL); | |
a3f97cbb JW |
4068 | } |
4069 | ||
3f76745e | 4070 | /* Equate a DIE to a particular declaration. */ |
71dfc51f | 4071 | |
3f76745e JM |
4072 | static void |
4073 | equate_decl_number_to_die (decl, decl_die) | |
4074 | register tree decl; | |
4075 | register dw_die_ref decl_die; | |
a3f97cbb | 4076 | { |
3f76745e | 4077 | register unsigned decl_id = DECL_UID (decl); |
d291dd49 | 4078 | register unsigned i; |
3f76745e | 4079 | register unsigned num_allocated; |
d291dd49 | 4080 | |
3f76745e | 4081 | if (decl_id >= decl_die_table_allocated) |
a3f97cbb | 4082 | { |
3f76745e JM |
4083 | num_allocated |
4084 | = ((decl_id + 1 + DECL_DIE_TABLE_INCREMENT - 1) | |
4085 | / DECL_DIE_TABLE_INCREMENT) | |
4086 | * DECL_DIE_TABLE_INCREMENT; | |
4087 | ||
4088 | decl_die_table | |
4089 | = (dw_die_ref *) xrealloc (decl_die_table, | |
4090 | sizeof (dw_die_ref) * num_allocated); | |
4091 | ||
4092 | bzero ((char *) &decl_die_table[decl_die_table_allocated], | |
4093 | (num_allocated - decl_die_table_allocated) * sizeof (dw_die_ref)); | |
4094 | decl_die_table_allocated = num_allocated; | |
a3f97cbb | 4095 | } |
71dfc51f | 4096 | |
3f76745e JM |
4097 | if (decl_id >= decl_die_table_in_use) |
4098 | decl_die_table_in_use = (decl_id + 1); | |
4099 | ||
4100 | decl_die_table[decl_id] = decl_die; | |
a3f97cbb JW |
4101 | } |
4102 | ||
3f76745e JM |
4103 | /* Return a pointer to a newly allocated location description. Location |
4104 | descriptions are simple expression terms that can be strung | |
4105 | together to form more complicated location (address) descriptions. */ | |
71dfc51f | 4106 | |
3f76745e JM |
4107 | static inline dw_loc_descr_ref |
4108 | new_loc_descr (op, oprnd1, oprnd2) | |
4109 | register enum dwarf_location_atom op; | |
4110 | register unsigned long oprnd1; | |
4111 | register unsigned long oprnd2; | |
a3f97cbb | 4112 | { |
3f76745e JM |
4113 | register dw_loc_descr_ref descr |
4114 | = (dw_loc_descr_ref) xmalloc (sizeof (dw_loc_descr_node)); | |
71dfc51f | 4115 | |
3f76745e JM |
4116 | descr->dw_loc_next = NULL; |
4117 | descr->dw_loc_opc = op; | |
4118 | descr->dw_loc_oprnd1.val_class = dw_val_class_unsigned_const; | |
4119 | descr->dw_loc_oprnd1.v.val_unsigned = oprnd1; | |
4120 | descr->dw_loc_oprnd2.val_class = dw_val_class_unsigned_const; | |
4121 | descr->dw_loc_oprnd2.v.val_unsigned = oprnd2; | |
71dfc51f | 4122 | |
3f76745e | 4123 | return descr; |
a3f97cbb | 4124 | } |
71dfc51f | 4125 | |
3f76745e JM |
4126 | /* Add a location description term to a location description expression. */ |
4127 | ||
4128 | static inline void | |
4129 | add_loc_descr (list_head, descr) | |
4130 | register dw_loc_descr_ref *list_head; | |
4131 | register dw_loc_descr_ref descr; | |
a3f97cbb | 4132 | { |
3f76745e | 4133 | register dw_loc_descr_ref *d; |
71dfc51f | 4134 | |
3f76745e JM |
4135 | /* Find the end of the chain. */ |
4136 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) | |
4137 | ; | |
71dfc51f | 4138 | |
3f76745e JM |
4139 | *d = descr; |
4140 | } | |
4141 | \f | |
4142 | /* Keep track of the number of spaces used to indent the | |
4143 | output of the debugging routines that print the structure of | |
4144 | the DIE internal representation. */ | |
4145 | static int print_indent; | |
71dfc51f | 4146 | |
3f76745e JM |
4147 | /* Indent the line the number of spaces given by print_indent. */ |
4148 | ||
4149 | static inline void | |
4150 | print_spaces (outfile) | |
4151 | FILE *outfile; | |
4152 | { | |
4153 | fprintf (outfile, "%*s", print_indent, ""); | |
a3f97cbb JW |
4154 | } |
4155 | ||
956d6950 | 4156 | /* Print the information associated with a given DIE, and its children. |
3f76745e | 4157 | This routine is a debugging aid only. */ |
71dfc51f | 4158 | |
a3f97cbb | 4159 | static void |
3f76745e JM |
4160 | print_die (die, outfile) |
4161 | dw_die_ref die; | |
4162 | FILE *outfile; | |
a3f97cbb | 4163 | { |
3f76745e JM |
4164 | register dw_attr_ref a; |
4165 | register dw_die_ref c; | |
71dfc51f | 4166 | |
3f76745e JM |
4167 | print_spaces (outfile); |
4168 | fprintf (outfile, "DIE %4u: %s\n", | |
4169 | die->die_offset, dwarf_tag_name (die->die_tag)); | |
4170 | print_spaces (outfile); | |
4171 | fprintf (outfile, " abbrev id: %u", die->die_abbrev); | |
4172 | fprintf (outfile, " offset: %u\n", die->die_offset); | |
4173 | ||
4174 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
a3f97cbb | 4175 | { |
3f76745e JM |
4176 | print_spaces (outfile); |
4177 | fprintf (outfile, " %s: ", dwarf_attr_name (a->dw_attr)); | |
4178 | ||
4179 | switch (a->dw_attr_val.val_class) | |
4180 | { | |
4181 | case dw_val_class_addr: | |
4182 | fprintf (outfile, "address"); | |
4183 | break; | |
4184 | case dw_val_class_loc: | |
4185 | fprintf (outfile, "location descriptor"); | |
4186 | break; | |
4187 | case dw_val_class_const: | |
4188 | fprintf (outfile, "%d", a->dw_attr_val.v.val_int); | |
4189 | break; | |
4190 | case dw_val_class_unsigned_const: | |
4191 | fprintf (outfile, "%u", a->dw_attr_val.v.val_unsigned); | |
4192 | break; | |
4193 | case dw_val_class_long_long: | |
4194 | fprintf (outfile, "constant (%u,%u)", | |
4195 | a->dw_attr_val.v.val_long_long.hi, | |
4196 | a->dw_attr_val.v.val_long_long.low); | |
4197 | break; | |
4198 | case dw_val_class_float: | |
4199 | fprintf (outfile, "floating-point constant"); | |
4200 | break; | |
4201 | case dw_val_class_flag: | |
4202 | fprintf (outfile, "%u", a->dw_attr_val.v.val_flag); | |
4203 | break; | |
4204 | case dw_val_class_die_ref: | |
4205 | if (a->dw_attr_val.v.val_die_ref != NULL) | |
4206 | fprintf (outfile, "die -> %u", | |
4207 | a->dw_attr_val.v.val_die_ref->die_offset); | |
4208 | else | |
4209 | fprintf (outfile, "die -> <null>"); | |
4210 | break; | |
4211 | case dw_val_class_lbl_id: | |
4212 | fprintf (outfile, "label: %s", a->dw_attr_val.v.val_lbl_id); | |
4213 | break; | |
4214 | case dw_val_class_section_offset: | |
4215 | fprintf (outfile, "section: %s", a->dw_attr_val.v.val_section); | |
4216 | break; | |
4217 | case dw_val_class_str: | |
4218 | if (a->dw_attr_val.v.val_str != NULL) | |
4219 | fprintf (outfile, "\"%s\"", a->dw_attr_val.v.val_str); | |
4220 | else | |
4221 | fprintf (outfile, "<null>"); | |
4222 | break; | |
e9a25f70 JL |
4223 | default: |
4224 | break; | |
3f76745e JM |
4225 | } |
4226 | ||
4227 | fprintf (outfile, "\n"); | |
4228 | } | |
4229 | ||
4230 | if (die->die_child != NULL) | |
4231 | { | |
4232 | print_indent += 4; | |
4233 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4234 | print_die (c, outfile); | |
71dfc51f | 4235 | |
3f76745e | 4236 | print_indent -= 4; |
a3f97cbb | 4237 | } |
a3f97cbb JW |
4238 | } |
4239 | ||
3f76745e JM |
4240 | /* Print the contents of the source code line number correspondence table. |
4241 | This routine is a debugging aid only. */ | |
71dfc51f | 4242 | |
3f76745e JM |
4243 | static void |
4244 | print_dwarf_line_table (outfile) | |
4245 | FILE *outfile; | |
a3f97cbb | 4246 | { |
3f76745e JM |
4247 | register unsigned i; |
4248 | register dw_line_info_ref line_info; | |
4249 | ||
4250 | fprintf (outfile, "\n\nDWARF source line information\n"); | |
4251 | for (i = 1; i < line_info_table_in_use; ++i) | |
a3f97cbb | 4252 | { |
3f76745e JM |
4253 | line_info = &line_info_table[i]; |
4254 | fprintf (outfile, "%5d: ", i); | |
4255 | fprintf (outfile, "%-20s", file_table[line_info->dw_file_num]); | |
4256 | fprintf (outfile, "%6d", line_info->dw_line_num); | |
4257 | fprintf (outfile, "\n"); | |
a3f97cbb | 4258 | } |
3f76745e JM |
4259 | |
4260 | fprintf (outfile, "\n\n"); | |
f37230f0 JM |
4261 | } |
4262 | ||
3f76745e JM |
4263 | /* Print the information collected for a given DIE. */ |
4264 | ||
4265 | void | |
4266 | debug_dwarf_die (die) | |
4267 | dw_die_ref die; | |
4268 | { | |
4269 | print_die (die, stderr); | |
4270 | } | |
4271 | ||
4272 | /* Print all DWARF information collected for the compilation unit. | |
4273 | This routine is a debugging aid only. */ | |
4274 | ||
4275 | void | |
4276 | debug_dwarf () | |
4277 | { | |
4278 | print_indent = 0; | |
4279 | print_die (comp_unit_die, stderr); | |
4280 | print_dwarf_line_table (stderr); | |
4281 | } | |
4282 | \f | |
4283 | /* Traverse the DIE, and add a sibling attribute if it may have the | |
4284 | effect of speeding up access to siblings. To save some space, | |
4285 | avoid generating sibling attributes for DIE's without children. */ | |
71dfc51f | 4286 | |
f37230f0 | 4287 | static void |
3f76745e JM |
4288 | add_sibling_attributes(die) |
4289 | register dw_die_ref die; | |
f37230f0 | 4290 | { |
3f76745e JM |
4291 | register dw_die_ref c; |
4292 | register dw_attr_ref attr; | |
4293 | if (die != comp_unit_die && die->die_child != NULL) | |
4294 | { | |
4295 | attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
4296 | attr->dw_attr_next = NULL; | |
4297 | attr->dw_attr = DW_AT_sibling; | |
4298 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
4299 | attr->dw_attr_val.v.val_die_ref = die->die_sib; | |
71dfc51f | 4300 | |
3f76745e JM |
4301 | /* Add the sibling link to the front of the attribute list. */ |
4302 | attr->dw_attr_next = die->die_attr; | |
4303 | if (die->die_attr == NULL) | |
4304 | die->die_attr_last = attr; | |
71dfc51f | 4305 | |
3f76745e JM |
4306 | die->die_attr = attr; |
4307 | } | |
4308 | ||
4309 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4310 | add_sibling_attributes (c); | |
a3f97cbb JW |
4311 | } |
4312 | ||
3f76745e JM |
4313 | /* The format of each DIE (and its attribute value pairs) |
4314 | is encoded in an abbreviation table. This routine builds the | |
4315 | abbreviation table and assigns a unique abbreviation id for | |
4316 | each abbreviation entry. The children of each die are visited | |
4317 | recursively. */ | |
71dfc51f | 4318 | |
a3f97cbb | 4319 | static void |
3f76745e JM |
4320 | build_abbrev_table (die) |
4321 | register dw_die_ref die; | |
a3f97cbb | 4322 | { |
3f76745e JM |
4323 | register unsigned long abbrev_id; |
4324 | register unsigned long n_alloc; | |
4325 | register dw_die_ref c; | |
4326 | register dw_attr_ref d_attr, a_attr; | |
a3f97cbb JW |
4327 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) |
4328 | { | |
4329 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 4330 | |
3f76745e JM |
4331 | if (abbrev->die_tag == die->die_tag) |
4332 | { | |
4333 | if ((abbrev->die_child != NULL) == (die->die_child != NULL)) | |
4334 | { | |
4335 | a_attr = abbrev->die_attr; | |
4336 | d_attr = die->die_attr; | |
71dfc51f | 4337 | |
3f76745e JM |
4338 | while (a_attr != NULL && d_attr != NULL) |
4339 | { | |
4340 | if ((a_attr->dw_attr != d_attr->dw_attr) | |
4341 | || (value_format (&a_attr->dw_attr_val) | |
4342 | != value_format (&d_attr->dw_attr_val))) | |
4343 | break; | |
71dfc51f | 4344 | |
3f76745e JM |
4345 | a_attr = a_attr->dw_attr_next; |
4346 | d_attr = d_attr->dw_attr_next; | |
4347 | } | |
71dfc51f | 4348 | |
3f76745e JM |
4349 | if (a_attr == NULL && d_attr == NULL) |
4350 | break; | |
4351 | } | |
4352 | } | |
4353 | } | |
71dfc51f | 4354 | |
3f76745e JM |
4355 | if (abbrev_id >= abbrev_die_table_in_use) |
4356 | { | |
4357 | if (abbrev_die_table_in_use >= abbrev_die_table_allocated) | |
a3f97cbb | 4358 | { |
3f76745e JM |
4359 | n_alloc = abbrev_die_table_allocated + ABBREV_DIE_TABLE_INCREMENT; |
4360 | abbrev_die_table | |
c760091a | 4361 | = (dw_die_ref *) xrealloc (abbrev_die_table, |
966f5dff | 4362 | sizeof (dw_die_ref) * n_alloc); |
71dfc51f | 4363 | |
3f76745e JM |
4364 | bzero ((char *) &abbrev_die_table[abbrev_die_table_allocated], |
4365 | (n_alloc - abbrev_die_table_allocated) * sizeof (dw_die_ref)); | |
4366 | abbrev_die_table_allocated = n_alloc; | |
a3f97cbb | 4367 | } |
71dfc51f | 4368 | |
3f76745e JM |
4369 | ++abbrev_die_table_in_use; |
4370 | abbrev_die_table[abbrev_id] = die; | |
a3f97cbb | 4371 | } |
3f76745e JM |
4372 | |
4373 | die->die_abbrev = abbrev_id; | |
4374 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4375 | build_abbrev_table (c); | |
a3f97cbb | 4376 | } |
3f76745e JM |
4377 | \f |
4378 | /* Return the size of a string, including the null byte. */ | |
a3f97cbb | 4379 | |
3f76745e JM |
4380 | static unsigned long |
4381 | size_of_string (str) | |
4382 | register char *str; | |
4383 | { | |
4384 | register unsigned long size = 0; | |
4385 | register unsigned long slen = strlen (str); | |
4386 | register unsigned long i; | |
4387 | register unsigned c; | |
71dfc51f | 4388 | |
3f76745e JM |
4389 | for (i = 0; i < slen; ++i) |
4390 | { | |
4391 | c = str[i]; | |
4392 | if (c == '\\') | |
4393 | ++i; | |
4394 | ||
4395 | size += 1; | |
4396 | } | |
4397 | ||
4398 | /* Null terminator. */ | |
4399 | size += 1; | |
4400 | return size; | |
4401 | } | |
4402 | ||
4403 | /* Return the size of a location descriptor. */ | |
4404 | ||
4405 | static unsigned long | |
4406 | size_of_loc_descr (loc) | |
a3f97cbb JW |
4407 | register dw_loc_descr_ref loc; |
4408 | { | |
3f76745e | 4409 | register unsigned long size = 1; |
71dfc51f | 4410 | |
a3f97cbb JW |
4411 | switch (loc->dw_loc_opc) |
4412 | { | |
4413 | case DW_OP_addr: | |
3f76745e | 4414 | size += PTR_SIZE; |
a3f97cbb JW |
4415 | break; |
4416 | case DW_OP_const1u: | |
4417 | case DW_OP_const1s: | |
3f76745e | 4418 | size += 1; |
a3f97cbb JW |
4419 | break; |
4420 | case DW_OP_const2u: | |
4421 | case DW_OP_const2s: | |
3f76745e | 4422 | size += 2; |
a3f97cbb JW |
4423 | break; |
4424 | case DW_OP_const4u: | |
4425 | case DW_OP_const4s: | |
3f76745e | 4426 | size += 4; |
a3f97cbb JW |
4427 | break; |
4428 | case DW_OP_const8u: | |
4429 | case DW_OP_const8s: | |
3f76745e | 4430 | size += 8; |
a3f97cbb JW |
4431 | break; |
4432 | case DW_OP_constu: | |
3f76745e | 4433 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4434 | break; |
4435 | case DW_OP_consts: | |
3f76745e | 4436 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4437 | break; |
4438 | case DW_OP_pick: | |
3f76745e | 4439 | size += 1; |
a3f97cbb JW |
4440 | break; |
4441 | case DW_OP_plus_uconst: | |
3f76745e | 4442 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4443 | break; |
4444 | case DW_OP_skip: | |
4445 | case DW_OP_bra: | |
3f76745e | 4446 | size += 2; |
a3f97cbb JW |
4447 | break; |
4448 | case DW_OP_breg0: | |
4449 | case DW_OP_breg1: | |
4450 | case DW_OP_breg2: | |
4451 | case DW_OP_breg3: | |
4452 | case DW_OP_breg4: | |
4453 | case DW_OP_breg5: | |
4454 | case DW_OP_breg6: | |
4455 | case DW_OP_breg7: | |
4456 | case DW_OP_breg8: | |
4457 | case DW_OP_breg9: | |
4458 | case DW_OP_breg10: | |
4459 | case DW_OP_breg11: | |
4460 | case DW_OP_breg12: | |
4461 | case DW_OP_breg13: | |
4462 | case DW_OP_breg14: | |
4463 | case DW_OP_breg15: | |
4464 | case DW_OP_breg16: | |
4465 | case DW_OP_breg17: | |
4466 | case DW_OP_breg18: | |
4467 | case DW_OP_breg19: | |
4468 | case DW_OP_breg20: | |
4469 | case DW_OP_breg21: | |
4470 | case DW_OP_breg22: | |
4471 | case DW_OP_breg23: | |
4472 | case DW_OP_breg24: | |
4473 | case DW_OP_breg25: | |
4474 | case DW_OP_breg26: | |
4475 | case DW_OP_breg27: | |
4476 | case DW_OP_breg28: | |
4477 | case DW_OP_breg29: | |
4478 | case DW_OP_breg30: | |
4479 | case DW_OP_breg31: | |
3f76745e | 4480 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4481 | break; |
4482 | case DW_OP_regx: | |
3f76745e | 4483 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4484 | break; |
4485 | case DW_OP_fbreg: | |
3f76745e | 4486 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4487 | break; |
4488 | case DW_OP_bregx: | |
3f76745e JM |
4489 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
4490 | size += size_of_sleb128 (loc->dw_loc_oprnd2.v.val_int); | |
a3f97cbb JW |
4491 | break; |
4492 | case DW_OP_piece: | |
3f76745e | 4493 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4494 | break; |
4495 | case DW_OP_deref_size: | |
4496 | case DW_OP_xderef_size: | |
3f76745e | 4497 | size += 1; |
a3f97cbb JW |
4498 | break; |
4499 | default: | |
4500 | break; | |
4501 | } | |
3f76745e JM |
4502 | |
4503 | return size; | |
a3f97cbb JW |
4504 | } |
4505 | ||
3f76745e | 4506 | /* Return the size of a series of location descriptors. */ |
71dfc51f | 4507 | |
a3f97cbb | 4508 | static unsigned long |
3f76745e JM |
4509 | size_of_locs (loc) |
4510 | register dw_loc_descr_ref loc; | |
a3f97cbb | 4511 | { |
3f76745e | 4512 | register unsigned long size = 0; |
71dfc51f | 4513 | |
3f76745e JM |
4514 | for (; loc != NULL; loc = loc->dw_loc_next) |
4515 | size += size_of_loc_descr (loc); | |
4516 | ||
4517 | return size; | |
4518 | } | |
4519 | ||
4520 | /* Return the power-of-two number of bytes necessary to represent VALUE. */ | |
4521 | ||
4522 | static int | |
4523 | constant_size (value) | |
4524 | long unsigned value; | |
4525 | { | |
4526 | int log; | |
4527 | ||
4528 | if (value == 0) | |
4529 | log = 0; | |
a3f97cbb | 4530 | else |
3f76745e | 4531 | log = floor_log2 (value); |
71dfc51f | 4532 | |
3f76745e JM |
4533 | log = log / 8; |
4534 | log = 1 << (floor_log2 (log) + 1); | |
4535 | ||
4536 | return log; | |
a3f97cbb JW |
4537 | } |
4538 | ||
3f76745e JM |
4539 | /* Return the size of a DIE, as it is represented in the |
4540 | .debug_info section. */ | |
71dfc51f | 4541 | |
3f76745e JM |
4542 | static unsigned long |
4543 | size_of_die (die) | |
a3f97cbb JW |
4544 | register dw_die_ref die; |
4545 | { | |
3f76745e | 4546 | register unsigned long size = 0; |
a3f97cbb | 4547 | register dw_attr_ref a; |
71dfc51f | 4548 | |
3f76745e | 4549 | size += size_of_uleb128 (die->die_abbrev); |
a3f97cbb JW |
4550 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
4551 | { | |
4552 | switch (a->dw_attr_val.val_class) | |
4553 | { | |
4554 | case dw_val_class_addr: | |
3f76745e | 4555 | size += PTR_SIZE; |
a3f97cbb JW |
4556 | break; |
4557 | case dw_val_class_loc: | |
3f76745e JM |
4558 | { |
4559 | register unsigned long lsize | |
4560 | = size_of_locs (a->dw_attr_val.v.val_loc); | |
71dfc51f | 4561 | |
3f76745e JM |
4562 | /* Block length. */ |
4563 | size += constant_size (lsize); | |
4564 | size += lsize; | |
4565 | } | |
a3f97cbb JW |
4566 | break; |
4567 | case dw_val_class_const: | |
3f76745e | 4568 | size += 4; |
a3f97cbb JW |
4569 | break; |
4570 | case dw_val_class_unsigned_const: | |
3f76745e | 4571 | size += constant_size (a->dw_attr_val.v.val_unsigned); |
a3f97cbb | 4572 | break; |
469ac993 | 4573 | case dw_val_class_long_long: |
3f76745e | 4574 | size += 1 + 8; /* block */ |
469ac993 JM |
4575 | break; |
4576 | case dw_val_class_float: | |
3f76745e | 4577 | size += 1 + a->dw_attr_val.v.val_float.length * 4; /* block */ |
a3f97cbb JW |
4578 | break; |
4579 | case dw_val_class_flag: | |
3f76745e | 4580 | size += 1; |
a3f97cbb JW |
4581 | break; |
4582 | case dw_val_class_die_ref: | |
3f76745e | 4583 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
4584 | break; |
4585 | case dw_val_class_fde_ref: | |
3f76745e | 4586 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
4587 | break; |
4588 | case dw_val_class_lbl_id: | |
3f76745e JM |
4589 | size += PTR_SIZE; |
4590 | break; | |
4591 | case dw_val_class_section_offset: | |
4592 | size += DWARF_OFFSET_SIZE; | |
4593 | break; | |
4594 | case dw_val_class_str: | |
4595 | size += size_of_string (a->dw_attr_val.v.val_str); | |
4596 | break; | |
4597 | default: | |
4598 | abort (); | |
4599 | } | |
a3f97cbb | 4600 | } |
3f76745e JM |
4601 | |
4602 | return size; | |
a3f97cbb JW |
4603 | } |
4604 | ||
956d6950 | 4605 | /* Size the debugging information associated with a given DIE. |
3f76745e JM |
4606 | Visits the DIE's children recursively. Updates the global |
4607 | variable next_die_offset, on each time through. Uses the | |
956d6950 | 4608 | current value of next_die_offset to update the die_offset |
3f76745e | 4609 | field in each DIE. */ |
71dfc51f | 4610 | |
a3f97cbb | 4611 | static void |
3f76745e JM |
4612 | calc_die_sizes (die) |
4613 | dw_die_ref die; | |
a3f97cbb | 4614 | { |
3f76745e JM |
4615 | register dw_die_ref c; |
4616 | die->die_offset = next_die_offset; | |
4617 | next_die_offset += size_of_die (die); | |
71dfc51f | 4618 | |
3f76745e JM |
4619 | for (c = die->die_child; c != NULL; c = c->die_sib) |
4620 | calc_die_sizes (c); | |
71dfc51f | 4621 | |
3f76745e JM |
4622 | if (die->die_child != NULL) |
4623 | /* Count the null byte used to terminate sibling lists. */ | |
4624 | next_die_offset += 1; | |
a3f97cbb JW |
4625 | } |
4626 | ||
3f76745e JM |
4627 | /* Return the size of the line information prolog generated for the |
4628 | compilation unit. */ | |
469ac993 | 4629 | |
3f76745e JM |
4630 | static unsigned long |
4631 | size_of_line_prolog () | |
a94dbf2c | 4632 | { |
3f76745e JM |
4633 | register unsigned long size; |
4634 | register unsigned long ft_index; | |
a94dbf2c | 4635 | |
3f76745e | 4636 | size = DWARF_LINE_PROLOG_HEADER_SIZE; |
469ac993 | 4637 | |
3f76745e JM |
4638 | /* Count the size of the table giving number of args for each |
4639 | standard opcode. */ | |
4640 | size += DWARF_LINE_OPCODE_BASE - 1; | |
71dfc51f | 4641 | |
3f76745e JM |
4642 | /* Include directory table is empty (at present). Count only the |
4643 | the null byte used to terminate the table. */ | |
4644 | size += 1; | |
71dfc51f | 4645 | |
3f76745e JM |
4646 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
4647 | { | |
4648 | /* File name entry. */ | |
4649 | size += size_of_string (file_table[ft_index]); | |
a94dbf2c | 4650 | |
3f76745e JM |
4651 | /* Include directory index. */ |
4652 | size += size_of_uleb128 (0); | |
a94dbf2c | 4653 | |
3f76745e JM |
4654 | /* Modification time. */ |
4655 | size += size_of_uleb128 (0); | |
71dfc51f | 4656 | |
3f76745e JM |
4657 | /* File length in bytes. */ |
4658 | size += size_of_uleb128 (0); | |
a94dbf2c | 4659 | } |
71dfc51f | 4660 | |
3f76745e JM |
4661 | /* Count the file table terminator. */ |
4662 | size += 1; | |
4663 | return size; | |
a94dbf2c JM |
4664 | } |
4665 | ||
3f76745e JM |
4666 | /* Return the size of the line information generated for this |
4667 | compilation unit. */ | |
71dfc51f | 4668 | |
3f76745e JM |
4669 | static unsigned long |
4670 | size_of_line_info () | |
a94dbf2c | 4671 | { |
3f76745e JM |
4672 | register unsigned long size; |
4673 | register unsigned long lt_index; | |
4674 | register unsigned long current_line; | |
4675 | register long line_offset; | |
4676 | register long line_delta; | |
4677 | register unsigned long current_file; | |
4678 | register unsigned long function; | |
f19a6894 JW |
4679 | unsigned long size_of_set_address; |
4680 | ||
4681 | /* Size of a DW_LNE_set_address instruction. */ | |
4682 | size_of_set_address = 1 + size_of_uleb128 (1 + PTR_SIZE) + 1 + PTR_SIZE; | |
a94dbf2c | 4683 | |
3f76745e JM |
4684 | /* Version number. */ |
4685 | size = 2; | |
71dfc51f | 4686 | |
3f76745e JM |
4687 | /* Prolog length specifier. */ |
4688 | size += DWARF_OFFSET_SIZE; | |
71dfc51f | 4689 | |
3f76745e JM |
4690 | /* Prolog. */ |
4691 | size += size_of_line_prolog (); | |
a94dbf2c | 4692 | |
3f76745e | 4693 | /* Set address register instruction. */ |
f19a6894 | 4694 | size += size_of_set_address; |
71dfc51f | 4695 | |
3f76745e JM |
4696 | current_file = 1; |
4697 | current_line = 1; | |
4698 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) | |
a94dbf2c | 4699 | { |
3f76745e JM |
4700 | register dw_line_info_ref line_info; |
4701 | ||
4702 | /* Advance pc instruction. */ | |
f19a6894 JW |
4703 | /* ??? See the DW_LNS_advance_pc comment in output_line_info. */ |
4704 | if (0) | |
4705 | size += 1 + 2; | |
4706 | else | |
4707 | size += size_of_set_address; | |
4708 | ||
3f76745e JM |
4709 | line_info = &line_info_table[lt_index]; |
4710 | if (line_info->dw_file_num != current_file) | |
4711 | { | |
4712 | /* Set file number instruction. */ | |
4713 | size += 1; | |
4714 | current_file = line_info->dw_file_num; | |
4715 | size += size_of_uleb128 (current_file); | |
4716 | } | |
4717 | ||
4718 | if (line_info->dw_line_num != current_line) | |
4719 | { | |
4720 | line_offset = line_info->dw_line_num - current_line; | |
4721 | line_delta = line_offset - DWARF_LINE_BASE; | |
4722 | current_line = line_info->dw_line_num; | |
4723 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
4724 | /* 1-byte special line number instruction. */ | |
4725 | size += 1; | |
4726 | else | |
4727 | { | |
4728 | /* Advance line instruction. */ | |
4729 | size += 1; | |
4730 | size += size_of_sleb128 (line_offset); | |
4731 | /* Generate line entry instruction. */ | |
4732 | size += 1; | |
4733 | } | |
4734 | } | |
a94dbf2c | 4735 | } |
a94dbf2c | 4736 | |
3f76745e | 4737 | /* Advance pc instruction. */ |
f19a6894 JW |
4738 | if (0) |
4739 | size += 1 + 2; | |
4740 | else | |
4741 | size += size_of_set_address; | |
a94dbf2c | 4742 | |
3f76745e JM |
4743 | /* End of line number info. marker. */ |
4744 | size += 1 + size_of_uleb128 (1) + 1; | |
a94dbf2c | 4745 | |
3f76745e JM |
4746 | function = 0; |
4747 | current_file = 1; | |
4748 | current_line = 1; | |
4749 | for (lt_index = 0; lt_index < separate_line_info_table_in_use; ) | |
4750 | { | |
4751 | register dw_separate_line_info_ref line_info | |
4752 | = &separate_line_info_table[lt_index]; | |
4753 | if (function != line_info->function) | |
4754 | { | |
4755 | function = line_info->function; | |
4756 | /* Set address register instruction. */ | |
f19a6894 | 4757 | size += size_of_set_address; |
3f76745e JM |
4758 | } |
4759 | else | |
f19a6894 JW |
4760 | { |
4761 | /* Advance pc instruction. */ | |
4762 | if (0) | |
4763 | size += 1 + 2; | |
4764 | else | |
4765 | size += size_of_set_address; | |
4766 | } | |
3f76745e JM |
4767 | |
4768 | if (line_info->dw_file_num != current_file) | |
4769 | { | |
4770 | /* Set file number instruction. */ | |
4771 | size += 1; | |
4772 | current_file = line_info->dw_file_num; | |
4773 | size += size_of_uleb128 (current_file); | |
4774 | } | |
4775 | ||
4776 | if (line_info->dw_line_num != current_line) | |
4777 | { | |
4778 | line_offset = line_info->dw_line_num - current_line; | |
4779 | line_delta = line_offset - DWARF_LINE_BASE; | |
4780 | current_line = line_info->dw_line_num; | |
4781 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
4782 | /* 1-byte special line number instruction. */ | |
4783 | size += 1; | |
4784 | else | |
4785 | { | |
4786 | /* Advance line instruction. */ | |
4787 | size += 1; | |
4788 | size += size_of_sleb128 (line_offset); | |
a94dbf2c | 4789 | |
3f76745e JM |
4790 | /* Generate line entry instruction. */ |
4791 | size += 1; | |
4792 | } | |
4793 | } | |
a94dbf2c | 4794 | |
3f76745e | 4795 | ++lt_index; |
a94dbf2c | 4796 | |
3f76745e JM |
4797 | /* If we're done with a function, end its sequence. */ |
4798 | if (lt_index == separate_line_info_table_in_use | |
4799 | || separate_line_info_table[lt_index].function != function) | |
4800 | { | |
4801 | current_file = 1; | |
4802 | current_line = 1; | |
71dfc51f | 4803 | |
3f76745e | 4804 | /* Advance pc instruction. */ |
f19a6894 JW |
4805 | if (0) |
4806 | size += 1 + 2; | |
4807 | else | |
4808 | size += size_of_set_address; | |
71dfc51f | 4809 | |
3f76745e JM |
4810 | /* End of line number info. marker. */ |
4811 | size += 1 + size_of_uleb128 (1) + 1; | |
4812 | } | |
a94dbf2c JM |
4813 | } |
4814 | ||
3f76745e | 4815 | return size; |
a94dbf2c JM |
4816 | } |
4817 | ||
3f76745e JM |
4818 | /* Return the size of the .debug_pubnames table generated for the |
4819 | compilation unit. */ | |
a94dbf2c | 4820 | |
3f76745e JM |
4821 | static unsigned long |
4822 | size_of_pubnames () | |
a94dbf2c | 4823 | { |
3f76745e JM |
4824 | register unsigned long size; |
4825 | register unsigned i; | |
469ac993 | 4826 | |
3f76745e JM |
4827 | size = DWARF_PUBNAMES_HEADER_SIZE; |
4828 | for (i = 0; i < pubname_table_in_use; ++i) | |
a94dbf2c | 4829 | { |
3f76745e JM |
4830 | register pubname_ref p = &pubname_table[i]; |
4831 | size += DWARF_OFFSET_SIZE + size_of_string (p->name); | |
a94dbf2c JM |
4832 | } |
4833 | ||
3f76745e JM |
4834 | size += DWARF_OFFSET_SIZE; |
4835 | return size; | |
a94dbf2c JM |
4836 | } |
4837 | ||
956d6950 | 4838 | /* Return the size of the information in the .debug_aranges section. */ |
469ac993 | 4839 | |
3f76745e JM |
4840 | static unsigned long |
4841 | size_of_aranges () | |
469ac993 | 4842 | { |
3f76745e | 4843 | register unsigned long size; |
469ac993 | 4844 | |
3f76745e | 4845 | size = DWARF_ARANGES_HEADER_SIZE; |
469ac993 | 4846 | |
3f76745e JM |
4847 | /* Count the address/length pair for this compilation unit. */ |
4848 | size += 2 * PTR_SIZE; | |
4849 | size += 2 * PTR_SIZE * arange_table_in_use; | |
469ac993 | 4850 | |
3f76745e JM |
4851 | /* Count the two zero words used to terminated the address range table. */ |
4852 | size += 2 * PTR_SIZE; | |
4853 | return size; | |
4854 | } | |
4855 | \f | |
4856 | /* Select the encoding of an attribute value. */ | |
4857 | ||
4858 | static enum dwarf_form | |
4859 | value_format (v) | |
4860 | dw_val_ref v; | |
4861 | { | |
4862 | switch (v->val_class) | |
469ac993 | 4863 | { |
3f76745e JM |
4864 | case dw_val_class_addr: |
4865 | return DW_FORM_addr; | |
4866 | case dw_val_class_loc: | |
4867 | switch (constant_size (size_of_locs (v->v.val_loc))) | |
469ac993 | 4868 | { |
3f76745e JM |
4869 | case 1: |
4870 | return DW_FORM_block1; | |
4871 | case 2: | |
4872 | return DW_FORM_block2; | |
469ac993 JM |
4873 | default: |
4874 | abort (); | |
4875 | } | |
3f76745e JM |
4876 | case dw_val_class_const: |
4877 | return DW_FORM_data4; | |
4878 | case dw_val_class_unsigned_const: | |
4879 | switch (constant_size (v->v.val_unsigned)) | |
4880 | { | |
4881 | case 1: | |
4882 | return DW_FORM_data1; | |
4883 | case 2: | |
4884 | return DW_FORM_data2; | |
4885 | case 4: | |
4886 | return DW_FORM_data4; | |
4887 | case 8: | |
4888 | return DW_FORM_data8; | |
4889 | default: | |
4890 | abort (); | |
4891 | } | |
4892 | case dw_val_class_long_long: | |
4893 | return DW_FORM_block1; | |
4894 | case dw_val_class_float: | |
4895 | return DW_FORM_block1; | |
4896 | case dw_val_class_flag: | |
4897 | return DW_FORM_flag; | |
4898 | case dw_val_class_die_ref: | |
4899 | return DW_FORM_ref; | |
4900 | case dw_val_class_fde_ref: | |
4901 | return DW_FORM_data; | |
4902 | case dw_val_class_lbl_id: | |
4903 | return DW_FORM_addr; | |
4904 | case dw_val_class_section_offset: | |
4905 | return DW_FORM_data; | |
4906 | case dw_val_class_str: | |
4907 | return DW_FORM_string; | |
469ac993 JM |
4908 | default: |
4909 | abort (); | |
4910 | } | |
a94dbf2c JM |
4911 | } |
4912 | ||
3f76745e | 4913 | /* Output the encoding of an attribute value. */ |
469ac993 | 4914 | |
3f76745e JM |
4915 | static void |
4916 | output_value_format (v) | |
4917 | dw_val_ref v; | |
a94dbf2c | 4918 | { |
3f76745e | 4919 | enum dwarf_form form = value_format (v); |
71dfc51f | 4920 | |
3f76745e | 4921 | output_uleb128 (form); |
c5cec899 | 4922 | if (flag_debug_asm) |
3f76745e | 4923 | fprintf (asm_out_file, " (%s)", dwarf_form_name (form)); |
141719a8 | 4924 | |
3f76745e JM |
4925 | fputc ('\n', asm_out_file); |
4926 | } | |
469ac993 | 4927 | |
3f76745e JM |
4928 | /* Output the .debug_abbrev section which defines the DIE abbreviation |
4929 | table. */ | |
469ac993 | 4930 | |
3f76745e JM |
4931 | static void |
4932 | output_abbrev_section () | |
4933 | { | |
4934 | unsigned long abbrev_id; | |
71dfc51f | 4935 | |
3f76745e JM |
4936 | dw_attr_ref a_attr; |
4937 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) | |
4938 | { | |
4939 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 4940 | |
3f76745e | 4941 | output_uleb128 (abbrev_id); |
c5cec899 | 4942 | if (flag_debug_asm) |
3f76745e | 4943 | fprintf (asm_out_file, " (abbrev code)"); |
469ac993 | 4944 | |
3f76745e JM |
4945 | fputc ('\n', asm_out_file); |
4946 | output_uleb128 (abbrev->die_tag); | |
c5cec899 | 4947 | if (flag_debug_asm) |
3f76745e JM |
4948 | fprintf (asm_out_file, " (TAG: %s)", |
4949 | dwarf_tag_name (abbrev->die_tag)); | |
71dfc51f | 4950 | |
3f76745e JM |
4951 | fputc ('\n', asm_out_file); |
4952 | fprintf (asm_out_file, "\t%s\t0x%x", ASM_BYTE_OP, | |
4953 | abbrev->die_child != NULL ? DW_children_yes : DW_children_no); | |
469ac993 | 4954 | |
c5cec899 | 4955 | if (flag_debug_asm) |
3f76745e JM |
4956 | fprintf (asm_out_file, "\t%s %s", |
4957 | ASM_COMMENT_START, | |
4958 | (abbrev->die_child != NULL | |
4959 | ? "DW_children_yes" : "DW_children_no")); | |
4960 | ||
4961 | fputc ('\n', asm_out_file); | |
4962 | ||
4963 | for (a_attr = abbrev->die_attr; a_attr != NULL; | |
4964 | a_attr = a_attr->dw_attr_next) | |
4965 | { | |
4966 | output_uleb128 (a_attr->dw_attr); | |
c5cec899 | 4967 | if (flag_debug_asm) |
3f76745e JM |
4968 | fprintf (asm_out_file, " (%s)", |
4969 | dwarf_attr_name (a_attr->dw_attr)); | |
4970 | ||
4971 | fputc ('\n', asm_out_file); | |
4972 | output_value_format (&a_attr->dw_attr_val); | |
469ac993 | 4973 | } |
469ac993 | 4974 | |
3f76745e | 4975 | fprintf (asm_out_file, "\t%s\t0,0\n", ASM_BYTE_OP); |
469ac993 | 4976 | } |
a94dbf2c JM |
4977 | } |
4978 | ||
3f76745e | 4979 | /* Output location description stack opcode's operands (if any). */ |
71dfc51f | 4980 | |
3f76745e JM |
4981 | static void |
4982 | output_loc_operands (loc) | |
4983 | register dw_loc_descr_ref loc; | |
a3f97cbb | 4984 | { |
3f76745e JM |
4985 | register dw_val_ref val1 = &loc->dw_loc_oprnd1; |
4986 | register dw_val_ref val2 = &loc->dw_loc_oprnd2; | |
71dfc51f | 4987 | |
3f76745e | 4988 | switch (loc->dw_loc_opc) |
a3f97cbb | 4989 | { |
3f76745e JM |
4990 | case DW_OP_addr: |
4991 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, val1->v.val_addr); | |
4992 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4993 | break; |
3f76745e JM |
4994 | case DW_OP_const1u: |
4995 | case DW_OP_const1s: | |
4996 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
4997 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4998 | break; |
3f76745e JM |
4999 | case DW_OP_const2u: |
5000 | case DW_OP_const2s: | |
5001 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
5002 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5003 | break; |
3f76745e JM |
5004 | case DW_OP_const4u: |
5005 | case DW_OP_const4s: | |
5006 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, val1->v.val_int); | |
5007 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5008 | break; |
3f76745e JM |
5009 | case DW_OP_const8u: |
5010 | case DW_OP_const8s: | |
5011 | abort (); | |
5012 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5013 | break; |
3f76745e JM |
5014 | case DW_OP_constu: |
5015 | output_uleb128 (val1->v.val_unsigned); | |
5016 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5017 | break; |
3f76745e JM |
5018 | case DW_OP_consts: |
5019 | output_sleb128 (val1->v.val_int); | |
5020 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5021 | break; |
3f76745e JM |
5022 | case DW_OP_pick: |
5023 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_int); | |
5024 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5025 | break; |
3f76745e JM |
5026 | case DW_OP_plus_uconst: |
5027 | output_uleb128 (val1->v.val_unsigned); | |
5028 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5029 | break; |
3f76745e JM |
5030 | case DW_OP_skip: |
5031 | case DW_OP_bra: | |
5032 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
5033 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5034 | break; |
3f76745e JM |
5035 | case DW_OP_breg0: |
5036 | case DW_OP_breg1: | |
5037 | case DW_OP_breg2: | |
5038 | case DW_OP_breg3: | |
5039 | case DW_OP_breg4: | |
5040 | case DW_OP_breg5: | |
5041 | case DW_OP_breg6: | |
5042 | case DW_OP_breg7: | |
5043 | case DW_OP_breg8: | |
5044 | case DW_OP_breg9: | |
5045 | case DW_OP_breg10: | |
5046 | case DW_OP_breg11: | |
5047 | case DW_OP_breg12: | |
5048 | case DW_OP_breg13: | |
5049 | case DW_OP_breg14: | |
5050 | case DW_OP_breg15: | |
5051 | case DW_OP_breg16: | |
5052 | case DW_OP_breg17: | |
5053 | case DW_OP_breg18: | |
5054 | case DW_OP_breg19: | |
5055 | case DW_OP_breg20: | |
5056 | case DW_OP_breg21: | |
5057 | case DW_OP_breg22: | |
5058 | case DW_OP_breg23: | |
5059 | case DW_OP_breg24: | |
5060 | case DW_OP_breg25: | |
5061 | case DW_OP_breg26: | |
5062 | case DW_OP_breg27: | |
5063 | case DW_OP_breg28: | |
5064 | case DW_OP_breg29: | |
5065 | case DW_OP_breg30: | |
5066 | case DW_OP_breg31: | |
5067 | output_sleb128 (val1->v.val_int); | |
5068 | fputc ('\n', asm_out_file); | |
5069 | break; | |
5070 | case DW_OP_regx: | |
5071 | output_uleb128 (val1->v.val_unsigned); | |
5072 | fputc ('\n', asm_out_file); | |
5073 | break; | |
5074 | case DW_OP_fbreg: | |
5075 | output_sleb128 (val1->v.val_int); | |
5076 | fputc ('\n', asm_out_file); | |
5077 | break; | |
5078 | case DW_OP_bregx: | |
5079 | output_uleb128 (val1->v.val_unsigned); | |
5080 | fputc ('\n', asm_out_file); | |
5081 | output_sleb128 (val2->v.val_int); | |
5082 | fputc ('\n', asm_out_file); | |
5083 | break; | |
5084 | case DW_OP_piece: | |
5085 | output_uleb128 (val1->v.val_unsigned); | |
5086 | fputc ('\n', asm_out_file); | |
5087 | break; | |
5088 | case DW_OP_deref_size: | |
5089 | case DW_OP_xderef_size: | |
5090 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
5091 | fputc ('\n', asm_out_file); | |
a3f97cbb JW |
5092 | break; |
5093 | default: | |
5094 | break; | |
5095 | } | |
a3f97cbb JW |
5096 | } |
5097 | ||
3f76745e | 5098 | /* Compute the offset of a sibling. */ |
71dfc51f | 5099 | |
3f76745e JM |
5100 | static unsigned long |
5101 | sibling_offset (die) | |
5102 | dw_die_ref die; | |
a3f97cbb | 5103 | { |
3f76745e | 5104 | unsigned long offset; |
71dfc51f | 5105 | |
3f76745e JM |
5106 | if (die->die_child_last == NULL) |
5107 | offset = die->die_offset + size_of_die (die); | |
5108 | else | |
5109 | offset = sibling_offset (die->die_child_last) + 1; | |
71dfc51f | 5110 | |
3f76745e | 5111 | return offset; |
a3f97cbb JW |
5112 | } |
5113 | ||
3f76745e JM |
5114 | /* Output the DIE and its attributes. Called recursively to generate |
5115 | the definitions of each child DIE. */ | |
71dfc51f | 5116 | |
a3f97cbb | 5117 | static void |
3f76745e JM |
5118 | output_die (die) |
5119 | register dw_die_ref die; | |
a3f97cbb | 5120 | { |
3f76745e JM |
5121 | register dw_attr_ref a; |
5122 | register dw_die_ref c; | |
5123 | register unsigned long ref_offset; | |
5124 | register unsigned long size; | |
5125 | register dw_loc_descr_ref loc; | |
5126 | register int i; | |
a94dbf2c | 5127 | |
3f76745e | 5128 | output_uleb128 (die->die_abbrev); |
c5cec899 | 5129 | if (flag_debug_asm) |
3f76745e JM |
5130 | fprintf (asm_out_file, " (DIE (0x%x) %s)", |
5131 | die->die_offset, dwarf_tag_name (die->die_tag)); | |
a94dbf2c | 5132 | |
3f76745e | 5133 | fputc ('\n', asm_out_file); |
a94dbf2c | 5134 | |
3f76745e | 5135 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
a3f97cbb | 5136 | { |
3f76745e JM |
5137 | switch (a->dw_attr_val.val_class) |
5138 | { | |
5139 | case dw_val_class_addr: | |
5140 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, | |
5141 | a->dw_attr_val.v.val_addr); | |
5142 | break; | |
a3f97cbb | 5143 | |
3f76745e JM |
5144 | case dw_val_class_loc: |
5145 | size = size_of_locs (a->dw_attr_val.v.val_loc); | |
71dfc51f | 5146 | |
3f76745e JM |
5147 | /* Output the block length for this list of location operations. */ |
5148 | switch (constant_size (size)) | |
5149 | { | |
5150 | case 1: | |
5151 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, size); | |
5152 | break; | |
5153 | case 2: | |
5154 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, size); | |
5155 | break; | |
5156 | default: | |
5157 | abort (); | |
5158 | } | |
71dfc51f | 5159 | |
c5cec899 | 5160 | if (flag_debug_asm) |
3f76745e JM |
5161 | fprintf (asm_out_file, "\t%s %s", |
5162 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
71dfc51f | 5163 | |
3f76745e JM |
5164 | fputc ('\n', asm_out_file); |
5165 | for (loc = a->dw_attr_val.v.val_loc; loc != NULL; | |
5166 | loc = loc->dw_loc_next) | |
5167 | { | |
5168 | /* Output the opcode. */ | |
5169 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, loc->dw_loc_opc); | |
c5cec899 | 5170 | if (flag_debug_asm) |
3f76745e JM |
5171 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
5172 | dwarf_stack_op_name (loc->dw_loc_opc)); | |
71dfc51f | 5173 | |
3f76745e | 5174 | fputc ('\n', asm_out_file); |
71dfc51f | 5175 | |
3f76745e JM |
5176 | /* Output the operand(s) (if any). */ |
5177 | output_loc_operands (loc); | |
5178 | } | |
a3f97cbb | 5179 | break; |
3f76745e JM |
5180 | |
5181 | case dw_val_class_const: | |
5182 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, a->dw_attr_val.v.val_int); | |
a3f97cbb | 5183 | break; |
3f76745e JM |
5184 | |
5185 | case dw_val_class_unsigned_const: | |
5186 | switch (constant_size (a->dw_attr_val.v.val_unsigned)) | |
5187 | { | |
5188 | case 1: | |
5189 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5190 | a->dw_attr_val.v.val_unsigned); | |
5191 | break; | |
5192 | case 2: | |
5193 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, | |
5194 | a->dw_attr_val.v.val_unsigned); | |
5195 | break; | |
5196 | case 4: | |
5197 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, | |
5198 | a->dw_attr_val.v.val_unsigned); | |
5199 | break; | |
5200 | case 8: | |
5201 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
5202 | a->dw_attr_val.v.val_long_long.hi, | |
5203 | a->dw_attr_val.v.val_long_long.low); | |
5204 | break; | |
5205 | default: | |
5206 | abort (); | |
5207 | } | |
a3f97cbb | 5208 | break; |
3f76745e JM |
5209 | |
5210 | case dw_val_class_long_long: | |
5211 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 8); | |
c5cec899 | 5212 | if (flag_debug_asm) |
3f76745e JM |
5213 | fprintf (asm_out_file, "\t%s %s", |
5214 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5215 | ||
5216 | fputc ('\n', asm_out_file); | |
5217 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
5218 | a->dw_attr_val.v.val_long_long.hi, | |
5219 | a->dw_attr_val.v.val_long_long.low); | |
5220 | ||
c5cec899 | 5221 | if (flag_debug_asm) |
3f76745e JM |
5222 | fprintf (asm_out_file, |
5223 | "\t%s long long constant", ASM_COMMENT_START); | |
5224 | ||
5225 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5226 | break; |
3f76745e JM |
5227 | |
5228 | case dw_val_class_float: | |
5229 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5230 | a->dw_attr_val.v.val_float.length * 4); | |
c5cec899 | 5231 | if (flag_debug_asm) |
3f76745e JM |
5232 | fprintf (asm_out_file, "\t%s %s", |
5233 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5234 | ||
5235 | fputc ('\n', asm_out_file); | |
5236 | for (i = 0; i < a->dw_attr_val.v.val_float.length; ++i) | |
5237 | { | |
5238 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, | |
5239 | a->dw_attr_val.v.val_float.array[i]); | |
c5cec899 | 5240 | if (flag_debug_asm) |
3f76745e JM |
5241 | fprintf (asm_out_file, "\t%s fp constant word %d", |
5242 | ASM_COMMENT_START, i); | |
5243 | ||
5244 | fputc ('\n', asm_out_file); | |
5245 | } | |
a3f97cbb | 5246 | break; |
3f76745e JM |
5247 | |
5248 | case dw_val_class_flag: | |
5249 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, a->dw_attr_val.v.val_flag); | |
a3f97cbb | 5250 | break; |
3f76745e JM |
5251 | |
5252 | case dw_val_class_die_ref: | |
5253 | if (a->dw_attr_val.v.val_die_ref != NULL) | |
5254 | ref_offset = a->dw_attr_val.v.val_die_ref->die_offset; | |
5255 | else if (a->dw_attr == DW_AT_sibling) | |
5256 | ref_offset = sibling_offset(die); | |
5257 | else | |
5258 | abort (); | |
5259 | ||
5260 | ASM_OUTPUT_DWARF_DATA (asm_out_file, ref_offset); | |
a3f97cbb | 5261 | break; |
3f76745e JM |
5262 | |
5263 | case dw_val_class_fde_ref: | |
a6ab3aad JM |
5264 | { |
5265 | char l1[20]; | |
5266 | ASM_GENERATE_INTERNAL_LABEL | |
5267 | (l1, FDE_AFTER_SIZE_LABEL, a->dw_attr_val.v.val_fde_index * 2); | |
5268 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, l1); | |
5269 | fprintf (asm_out_file, " - %d", DWARF_OFFSET_SIZE); | |
5270 | } | |
a3f97cbb | 5271 | break; |
a3f97cbb | 5272 | |
3f76745e JM |
5273 | case dw_val_class_lbl_id: |
5274 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, a->dw_attr_val.v.val_lbl_id); | |
5275 | break; | |
71dfc51f | 5276 | |
3f76745e JM |
5277 | case dw_val_class_section_offset: |
5278 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, | |
5279 | stripattributes | |
5280 | (a->dw_attr_val.v.val_section)); | |
5281 | break; | |
a3f97cbb | 5282 | |
3f76745e | 5283 | case dw_val_class_str: |
8d4e65a6 JL |
5284 | if (flag_debug_asm) |
5285 | ASM_OUTPUT_DWARF_STRING (asm_out_file, a->dw_attr_val.v.val_str); | |
5286 | else | |
5287 | ASM_OUTPUT_ASCII (asm_out_file, | |
5288 | a->dw_attr_val.v.val_str, | |
c2c85462 | 5289 | strlen (a->dw_attr_val.v.val_str) + 1); |
3f76745e | 5290 | break; |
b2932ae5 | 5291 | |
3f76745e JM |
5292 | default: |
5293 | abort (); | |
5294 | } | |
a94dbf2c | 5295 | |
3f76745e JM |
5296 | if (a->dw_attr_val.val_class != dw_val_class_loc |
5297 | && a->dw_attr_val.val_class != dw_val_class_long_long | |
5298 | && a->dw_attr_val.val_class != dw_val_class_float) | |
5299 | { | |
c5cec899 | 5300 | if (flag_debug_asm) |
3f76745e JM |
5301 | fprintf (asm_out_file, "\t%s %s", |
5302 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
b2932ae5 | 5303 | |
3f76745e JM |
5304 | fputc ('\n', asm_out_file); |
5305 | } | |
5306 | } | |
71dfc51f | 5307 | |
3f76745e JM |
5308 | for (c = die->die_child; c != NULL; c = c->die_sib) |
5309 | output_die (c); | |
71dfc51f | 5310 | |
3f76745e | 5311 | if (die->die_child != NULL) |
7e23cb16 | 5312 | { |
3f76745e JM |
5313 | /* Add null byte to terminate sibling list. */ |
5314 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5315 | if (flag_debug_asm) |
3f76745e JM |
5316 | fprintf (asm_out_file, "\t%s end of children of DIE 0x%x", |
5317 | ASM_COMMENT_START, die->die_offset); | |
5318 | ||
7e23cb16 JM |
5319 | fputc ('\n', asm_out_file); |
5320 | } | |
3f76745e | 5321 | } |
71dfc51f | 5322 | |
3f76745e JM |
5323 | /* Output the compilation unit that appears at the beginning of the |
5324 | .debug_info section, and precedes the DIE descriptions. */ | |
71dfc51f | 5325 | |
3f76745e JM |
5326 | static void |
5327 | output_compilation_unit_header () | |
5328 | { | |
5329 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset - DWARF_OFFSET_SIZE); | |
c5cec899 | 5330 | if (flag_debug_asm) |
3f76745e JM |
5331 | fprintf (asm_out_file, "\t%s Length of Compilation Unit Info.", |
5332 | ASM_COMMENT_START); | |
71dfc51f | 5333 | |
a3f97cbb | 5334 | fputc ('\n', asm_out_file); |
3f76745e | 5335 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
c5cec899 | 5336 | if (flag_debug_asm) |
3f76745e | 5337 | fprintf (asm_out_file, "\t%s DWARF version number", ASM_COMMENT_START); |
71dfc51f | 5338 | |
a3f97cbb | 5339 | fputc ('\n', asm_out_file); |
3f76745e | 5340 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (ABBREV_SECTION)); |
c5cec899 | 5341 | if (flag_debug_asm) |
3f76745e JM |
5342 | fprintf (asm_out_file, "\t%s Offset Into Abbrev. Section", |
5343 | ASM_COMMENT_START); | |
71dfc51f | 5344 | |
a3f97cbb | 5345 | fputc ('\n', asm_out_file); |
3f76745e | 5346 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); |
c5cec899 | 5347 | if (flag_debug_asm) |
3f76745e | 5348 | fprintf (asm_out_file, "\t%s Pointer Size (in bytes)", ASM_COMMENT_START); |
71dfc51f | 5349 | |
a3f97cbb | 5350 | fputc ('\n', asm_out_file); |
a3f97cbb JW |
5351 | } |
5352 | ||
a1d7ffe3 JM |
5353 | /* The DWARF2 pubname for a nested thingy looks like "A::f". The output |
5354 | of decl_printable_name for C++ looks like "A::f(int)". Let's drop the | |
5355 | argument list, and maybe the scope. */ | |
5356 | ||
71dfc51f | 5357 | static char * |
a1d7ffe3 JM |
5358 | dwarf2_name (decl, scope) |
5359 | tree decl; | |
5360 | int scope; | |
5361 | { | |
5362 | return (*decl_printable_name) (decl, scope ? 1 : 0); | |
5363 | } | |
5364 | ||
d291dd49 | 5365 | /* Add a new entry to .debug_pubnames if appropriate. */ |
71dfc51f | 5366 | |
d291dd49 JM |
5367 | static void |
5368 | add_pubname (decl, die) | |
5369 | tree decl; | |
5370 | dw_die_ref die; | |
5371 | { | |
5372 | pubname_ref p; | |
5373 | ||
5374 | if (! TREE_PUBLIC (decl)) | |
5375 | return; | |
5376 | ||
5377 | if (pubname_table_in_use == pubname_table_allocated) | |
5378 | { | |
5379 | pubname_table_allocated += PUBNAME_TABLE_INCREMENT; | |
5380 | pubname_table = (pubname_ref) xrealloc | |
5381 | (pubname_table, pubname_table_allocated * sizeof (pubname_entry)); | |
5382 | } | |
71dfc51f | 5383 | |
d291dd49 JM |
5384 | p = &pubname_table[pubname_table_in_use++]; |
5385 | p->die = die; | |
a1d7ffe3 JM |
5386 | |
5387 | p->name = xstrdup (dwarf2_name (decl, 1)); | |
d291dd49 JM |
5388 | } |
5389 | ||
a3f97cbb JW |
5390 | /* Output the public names table used to speed up access to externally |
5391 | visible names. For now, only generate entries for externally | |
5392 | visible procedures. */ | |
71dfc51f | 5393 | |
a3f97cbb JW |
5394 | static void |
5395 | output_pubnames () | |
5396 | { | |
d291dd49 | 5397 | register unsigned i; |
71dfc51f RK |
5398 | register unsigned long pubnames_length = size_of_pubnames (); |
5399 | ||
5400 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pubnames_length); | |
5401 | ||
c5cec899 | 5402 | if (flag_debug_asm) |
71dfc51f RK |
5403 | fprintf (asm_out_file, "\t%s Length of Public Names Info.", |
5404 | ASM_COMMENT_START); | |
5405 | ||
a3f97cbb JW |
5406 | fputc ('\n', asm_out_file); |
5407 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
71dfc51f | 5408 | |
c5cec899 | 5409 | if (flag_debug_asm) |
71dfc51f RK |
5410 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5411 | ||
a3f97cbb | 5412 | fputc ('\n', asm_out_file); |
c53aa195 | 5413 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (DEBUG_INFO_SECTION)); |
c5cec899 | 5414 | if (flag_debug_asm) |
71dfc51f RK |
5415 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
5416 | ASM_COMMENT_START); | |
5417 | ||
a3f97cbb | 5418 | fputc ('\n', asm_out_file); |
7e23cb16 | 5419 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset); |
c5cec899 | 5420 | if (flag_debug_asm) |
71dfc51f RK |
5421 | fprintf (asm_out_file, "\t%s Compilation Unit Length", ASM_COMMENT_START); |
5422 | ||
a3f97cbb | 5423 | fputc ('\n', asm_out_file); |
d291dd49 | 5424 | for (i = 0; i < pubname_table_in_use; ++i) |
a3f97cbb | 5425 | { |
d291dd49 | 5426 | register pubname_ref pub = &pubname_table[i]; |
71dfc51f | 5427 | |
7e23cb16 | 5428 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pub->die->die_offset); |
c5cec899 | 5429 | if (flag_debug_asm) |
71dfc51f RK |
5430 | fprintf (asm_out_file, "\t%s DIE offset", ASM_COMMENT_START); |
5431 | ||
d291dd49 JM |
5432 | fputc ('\n', asm_out_file); |
5433 | ||
c5cec899 | 5434 | if (flag_debug_asm) |
8d4e65a6 JL |
5435 | { |
5436 | ASM_OUTPUT_DWARF_STRING (asm_out_file, pub->name); | |
5437 | fprintf (asm_out_file, "%s external name", ASM_COMMENT_START); | |
5438 | } | |
5439 | else | |
5440 | { | |
c2c85462 | 5441 | ASM_OUTPUT_ASCII (asm_out_file, pub->name, strlen (pub->name) + 1); |
8d4e65a6 | 5442 | } |
71dfc51f | 5443 | |
d291dd49 | 5444 | fputc ('\n', asm_out_file); |
a3f97cbb | 5445 | } |
71dfc51f | 5446 | |
7e23cb16 | 5447 | ASM_OUTPUT_DWARF_DATA (asm_out_file, 0); |
a3f97cbb JW |
5448 | fputc ('\n', asm_out_file); |
5449 | } | |
5450 | ||
d291dd49 | 5451 | /* Add a new entry to .debug_aranges if appropriate. */ |
71dfc51f | 5452 | |
d291dd49 JM |
5453 | static void |
5454 | add_arange (decl, die) | |
5455 | tree decl; | |
5456 | dw_die_ref die; | |
5457 | { | |
5458 | if (! DECL_SECTION_NAME (decl)) | |
5459 | return; | |
5460 | ||
5461 | if (arange_table_in_use == arange_table_allocated) | |
5462 | { | |
5463 | arange_table_allocated += ARANGE_TABLE_INCREMENT; | |
71dfc51f RK |
5464 | arange_table |
5465 | = (arange_ref) xrealloc (arange_table, | |
5466 | arange_table_allocated * sizeof (dw_die_ref)); | |
d291dd49 | 5467 | } |
71dfc51f | 5468 | |
d291dd49 JM |
5469 | arange_table[arange_table_in_use++] = die; |
5470 | } | |
5471 | ||
a3f97cbb JW |
5472 | /* Output the information that goes into the .debug_aranges table. |
5473 | Namely, define the beginning and ending address range of the | |
5474 | text section generated for this compilation unit. */ | |
71dfc51f | 5475 | |
a3f97cbb JW |
5476 | static void |
5477 | output_aranges () | |
5478 | { | |
d291dd49 | 5479 | register unsigned i; |
71dfc51f RK |
5480 | register unsigned long aranges_length = size_of_aranges (); |
5481 | ||
5482 | ASM_OUTPUT_DWARF_DATA (asm_out_file, aranges_length); | |
c5cec899 | 5483 | if (flag_debug_asm) |
71dfc51f RK |
5484 | fprintf (asm_out_file, "\t%s Length of Address Ranges Info.", |
5485 | ASM_COMMENT_START); | |
5486 | ||
a3f97cbb JW |
5487 | fputc ('\n', asm_out_file); |
5488 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
c5cec899 | 5489 | if (flag_debug_asm) |
71dfc51f RK |
5490 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5491 | ||
a3f97cbb | 5492 | fputc ('\n', asm_out_file); |
c53aa195 | 5493 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (DEBUG_INFO_SECTION)); |
c5cec899 | 5494 | if (flag_debug_asm) |
71dfc51f RK |
5495 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
5496 | ASM_COMMENT_START); | |
5497 | ||
a3f97cbb JW |
5498 | fputc ('\n', asm_out_file); |
5499 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); | |
c5cec899 | 5500 | if (flag_debug_asm) |
71dfc51f RK |
5501 | fprintf (asm_out_file, "\t%s Size of Address", ASM_COMMENT_START); |
5502 | ||
a3f97cbb JW |
5503 | fputc ('\n', asm_out_file); |
5504 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5505 | if (flag_debug_asm) |
71dfc51f RK |
5506 | fprintf (asm_out_file, "\t%s Size of Segment Descriptor", |
5507 | ASM_COMMENT_START); | |
5508 | ||
a3f97cbb JW |
5509 | fputc ('\n', asm_out_file); |
5510 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 4); | |
7e23cb16 JM |
5511 | if (PTR_SIZE == 8) |
5512 | fprintf (asm_out_file, ",0,0"); | |
71dfc51f | 5513 | |
c5cec899 | 5514 | if (flag_debug_asm) |
71dfc51f RK |
5515 | fprintf (asm_out_file, "\t%s Pad to %d byte boundary", |
5516 | ASM_COMMENT_START, 2 * PTR_SIZE); | |
5517 | ||
a3f97cbb | 5518 | fputc ('\n', asm_out_file); |
bdb669cb | 5519 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, TEXT_SECTION); |
c5cec899 | 5520 | if (flag_debug_asm) |
71dfc51f RK |
5521 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
5522 | ||
a3f97cbb | 5523 | fputc ('\n', asm_out_file); |
5c90448c | 5524 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, text_end_label, TEXT_SECTION); |
c5cec899 | 5525 | if (flag_debug_asm) |
71dfc51f RK |
5526 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
5527 | ||
a3f97cbb | 5528 | fputc ('\n', asm_out_file); |
d291dd49 JM |
5529 | for (i = 0; i < arange_table_in_use; ++i) |
5530 | { | |
5531 | dw_die_ref a = arange_table[i]; | |
71dfc51f | 5532 | |
d291dd49 JM |
5533 | if (a->die_tag == DW_TAG_subprogram) |
5534 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, get_AT_low_pc (a)); | |
5535 | else | |
a1d7ffe3 JM |
5536 | { |
5537 | char *name = get_AT_string (a, DW_AT_MIPS_linkage_name); | |
5538 | if (! name) | |
5539 | name = get_AT_string (a, DW_AT_name); | |
71dfc51f | 5540 | |
a1d7ffe3 JM |
5541 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, name); |
5542 | } | |
71dfc51f | 5543 | |
c5cec899 | 5544 | if (flag_debug_asm) |
71dfc51f RK |
5545 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
5546 | ||
d291dd49 JM |
5547 | fputc ('\n', asm_out_file); |
5548 | if (a->die_tag == DW_TAG_subprogram) | |
7e23cb16 JM |
5549 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, get_AT_hi_pc (a), |
5550 | get_AT_low_pc (a)); | |
d291dd49 | 5551 | else |
7e23cb16 JM |
5552 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, |
5553 | get_AT_unsigned (a, DW_AT_byte_size)); | |
71dfc51f | 5554 | |
c5cec899 | 5555 | if (flag_debug_asm) |
71dfc51f RK |
5556 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
5557 | ||
d291dd49 JM |
5558 | fputc ('\n', asm_out_file); |
5559 | } | |
71dfc51f | 5560 | |
a3f97cbb | 5561 | /* Output the terminator words. */ |
7e23cb16 | 5562 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb | 5563 | fputc ('\n', asm_out_file); |
7e23cb16 | 5564 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb JW |
5565 | fputc ('\n', asm_out_file); |
5566 | } | |
5567 | ||
5568 | /* Output the source line number correspondence information. This | |
f19a6894 JW |
5569 | information goes into the .debug_line section. |
5570 | ||
5571 | If the format of this data changes, then the function size_of_line_info | |
5572 | must also be adjusted the same way. */ | |
71dfc51f | 5573 | |
a3f97cbb JW |
5574 | static void |
5575 | output_line_info () | |
5576 | { | |
a3f97cbb JW |
5577 | char line_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
5578 | char prev_line_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
5579 | register unsigned opc; | |
5580 | register unsigned n_op_args; | |
a3f97cbb JW |
5581 | register unsigned long ft_index; |
5582 | register unsigned long lt_index; | |
5583 | register unsigned long current_line; | |
5584 | register long line_offset; | |
5585 | register long line_delta; | |
5586 | register unsigned long current_file; | |
e90b62db | 5587 | register unsigned long function; |
71dfc51f | 5588 | |
7e23cb16 | 5589 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_info ()); |
c5cec899 | 5590 | if (flag_debug_asm) |
71dfc51f RK |
5591 | fprintf (asm_out_file, "\t%s Length of Source Line Info.", |
5592 | ASM_COMMENT_START); | |
5593 | ||
a3f97cbb JW |
5594 | fputc ('\n', asm_out_file); |
5595 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
c5cec899 | 5596 | if (flag_debug_asm) |
71dfc51f RK |
5597 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5598 | ||
a3f97cbb | 5599 | fputc ('\n', asm_out_file); |
7e23cb16 | 5600 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_prolog ()); |
c5cec899 | 5601 | if (flag_debug_asm) |
71dfc51f RK |
5602 | fprintf (asm_out_file, "\t%s Prolog Length", ASM_COMMENT_START); |
5603 | ||
a3f97cbb JW |
5604 | fputc ('\n', asm_out_file); |
5605 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_MIN_INSTR_LENGTH); | |
c5cec899 | 5606 | if (flag_debug_asm) |
71dfc51f RK |
5607 | fprintf (asm_out_file, "\t%s Minimum Instruction Length", |
5608 | ASM_COMMENT_START); | |
5609 | ||
a3f97cbb JW |
5610 | fputc ('\n', asm_out_file); |
5611 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_DEFAULT_IS_STMT_START); | |
c5cec899 | 5612 | if (flag_debug_asm) |
71dfc51f RK |
5613 | fprintf (asm_out_file, "\t%s Default is_stmt_start flag", |
5614 | ASM_COMMENT_START); | |
5615 | ||
a3f97cbb JW |
5616 | fputc ('\n', asm_out_file); |
5617 | fprintf (asm_out_file, "\t%s\t%d", ASM_BYTE_OP, DWARF_LINE_BASE); | |
c5cec899 | 5618 | if (flag_debug_asm) |
71dfc51f RK |
5619 | fprintf (asm_out_file, "\t%s Line Base Value (Special Opcodes)", |
5620 | ASM_COMMENT_START); | |
5621 | ||
a3f97cbb JW |
5622 | fputc ('\n', asm_out_file); |
5623 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_RANGE); | |
c5cec899 | 5624 | if (flag_debug_asm) |
71dfc51f RK |
5625 | fprintf (asm_out_file, "\t%s Line Range Value (Special Opcodes)", |
5626 | ASM_COMMENT_START); | |
5627 | ||
a3f97cbb JW |
5628 | fputc ('\n', asm_out_file); |
5629 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_OPCODE_BASE); | |
c5cec899 | 5630 | if (flag_debug_asm) |
71dfc51f RK |
5631 | fprintf (asm_out_file, "\t%s Special Opcode Base", ASM_COMMENT_START); |
5632 | ||
a3f97cbb JW |
5633 | fputc ('\n', asm_out_file); |
5634 | for (opc = 1; opc < DWARF_LINE_OPCODE_BASE; ++opc) | |
5635 | { | |
5636 | switch (opc) | |
5637 | { | |
5638 | case DW_LNS_advance_pc: | |
5639 | case DW_LNS_advance_line: | |
5640 | case DW_LNS_set_file: | |
5641 | case DW_LNS_set_column: | |
5642 | case DW_LNS_fixed_advance_pc: | |
5643 | n_op_args = 1; | |
5644 | break; | |
5645 | default: | |
5646 | n_op_args = 0; | |
5647 | break; | |
5648 | } | |
5649 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, n_op_args); | |
c5cec899 | 5650 | if (flag_debug_asm) |
71dfc51f RK |
5651 | fprintf (asm_out_file, "\t%s opcode: 0x%x has %d args", |
5652 | ASM_COMMENT_START, opc, n_op_args); | |
a3f97cbb JW |
5653 | fputc ('\n', asm_out_file); |
5654 | } | |
71dfc51f | 5655 | |
c5cec899 | 5656 | if (flag_debug_asm) |
71dfc51f RK |
5657 | fprintf (asm_out_file, "%s Include Directory Table\n", ASM_COMMENT_START); |
5658 | ||
a3f97cbb JW |
5659 | /* Include directory table is empty, at present */ |
5660 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
5661 | fputc ('\n', asm_out_file); | |
c5cec899 | 5662 | if (flag_debug_asm) |
71dfc51f RK |
5663 | fprintf (asm_out_file, "%s File Name Table\n", ASM_COMMENT_START); |
5664 | ||
a3f97cbb JW |
5665 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
5666 | { | |
c5cec899 | 5667 | if (flag_debug_asm) |
8d4e65a6 JL |
5668 | { |
5669 | ASM_OUTPUT_DWARF_STRING (asm_out_file, file_table[ft_index]); | |
5670 | fprintf (asm_out_file, "%s File Entry: 0x%x", | |
5671 | ASM_COMMENT_START, ft_index); | |
5672 | } | |
5673 | else | |
5674 | { | |
5675 | ASM_OUTPUT_ASCII (asm_out_file, | |
5676 | file_table[ft_index], | |
c2c85462 | 5677 | strlen (file_table[ft_index]) + 1); |
8d4e65a6 | 5678 | } |
71dfc51f | 5679 | |
a3f97cbb | 5680 | fputc ('\n', asm_out_file); |
71dfc51f | 5681 | |
a3f97cbb JW |
5682 | /* Include directory index */ |
5683 | output_uleb128 (0); | |
5684 | fputc ('\n', asm_out_file); | |
71dfc51f | 5685 | |
a3f97cbb JW |
5686 | /* Modification time */ |
5687 | output_uleb128 (0); | |
5688 | fputc ('\n', asm_out_file); | |
71dfc51f | 5689 | |
a3f97cbb JW |
5690 | /* File length in bytes */ |
5691 | output_uleb128 (0); | |
5692 | fputc ('\n', asm_out_file); | |
5693 | } | |
71dfc51f | 5694 | |
a3f97cbb JW |
5695 | /* Terminate the file name table */ |
5696 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
5697 | fputc ('\n', asm_out_file); | |
5698 | ||
5699 | /* Set the address register to the first location in the text section */ | |
5700 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5701 | if (flag_debug_asm) |
71dfc51f RK |
5702 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); |
5703 | ||
a3f97cbb JW |
5704 | fputc ('\n', asm_out_file); |
5705 | output_uleb128 (1 + PTR_SIZE); | |
5706 | fputc ('\n', asm_out_file); | |
5707 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5708 | fputc ('\n', asm_out_file); | |
bdb669cb | 5709 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, TEXT_SECTION); |
a3f97cbb JW |
5710 | fputc ('\n', asm_out_file); |
5711 | ||
5712 | /* Generate the line number to PC correspondence table, encoded as | |
5713 | a series of state machine operations. */ | |
5714 | current_file = 1; | |
5715 | current_line = 1; | |
bdb669cb | 5716 | strcpy (prev_line_label, TEXT_SECTION); |
a3f97cbb JW |
5717 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) |
5718 | { | |
e90b62db | 5719 | register dw_line_info_ref line_info; |
71dfc51f | 5720 | |
f19a6894 JW |
5721 | /* Emit debug info for the address of the current line, choosing |
5722 | the encoding that uses the least amount of space. */ | |
5723 | /* ??? Unfortunately, we have little choice here currently, and must | |
5724 | always use the most general form. Gcc does not know the address | |
5725 | delta itself, so we can't use DW_LNS_advance_pc. There are no known | |
5726 | dwarf2 aware assemblers at this time, so we can't use any special | |
5727 | pseudo ops that would allow the assembler to optimally encode this for | |
5728 | us. Many ports do have length attributes which will give an upper | |
5729 | bound on the address range. We could perhaps use length attributes | |
5730 | to determine when it is safe to use DW_LNS_fixed_advance_pc. */ | |
5c90448c | 5731 | ASM_GENERATE_INTERNAL_LABEL (line_label, LINE_CODE_LABEL, lt_index); |
f19a6894 JW |
5732 | if (0) |
5733 | { | |
5734 | /* This can handle deltas up to 0xffff. This takes 3 bytes. */ | |
5735 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5736 | if (flag_debug_asm) |
f19a6894 JW |
5737 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5738 | ASM_COMMENT_START); | |
5739 | ||
5740 | fputc ('\n', asm_out_file); | |
5741 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, prev_line_label); | |
5742 | fputc ('\n', asm_out_file); | |
5743 | } | |
5744 | else | |
5745 | { | |
5746 | /* This can handle any delta. This takes 4+PTR_SIZE bytes. */ | |
5747 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5748 | if (flag_debug_asm) |
f19a6894 JW |
5749 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5750 | ASM_COMMENT_START); | |
5751 | fputc ('\n', asm_out_file); | |
5752 | output_uleb128 (1 + PTR_SIZE); | |
5753 | fputc ('\n', asm_out_file); | |
5754 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5755 | fputc ('\n', asm_out_file); | |
5756 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5757 | fputc ('\n', asm_out_file); | |
5758 | } | |
5759 | strcpy (prev_line_label, line_label); | |
5760 | ||
5761 | /* Emit debug info for the source file of the current line, if | |
5762 | different from the previous line. */ | |
a3f97cbb JW |
5763 | line_info = &line_info_table[lt_index]; |
5764 | if (line_info->dw_file_num != current_file) | |
5765 | { | |
5766 | current_file = line_info->dw_file_num; | |
5767 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 5768 | if (flag_debug_asm) |
71dfc51f RK |
5769 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
5770 | ||
a3f97cbb JW |
5771 | fputc ('\n', asm_out_file); |
5772 | output_uleb128 (current_file); | |
c5cec899 | 5773 | if (flag_debug_asm) |
b2932ae5 | 5774 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 5775 | |
a3f97cbb JW |
5776 | fputc ('\n', asm_out_file); |
5777 | } | |
71dfc51f | 5778 | |
f19a6894 JW |
5779 | /* Emit debug info for the current line number, choosing the encoding |
5780 | that uses the least amount of space. */ | |
a94dbf2c JM |
5781 | line_offset = line_info->dw_line_num - current_line; |
5782 | line_delta = line_offset - DWARF_LINE_BASE; | |
5783 | current_line = line_info->dw_line_num; | |
5784 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
a3f97cbb | 5785 | { |
f19a6894 JW |
5786 | /* This can handle deltas from -10 to 234, using the current |
5787 | definitions of DWARF_LINE_BASE and DWARF_LINE_RANGE. This | |
5788 | takes 1 byte. */ | |
a94dbf2c JM |
5789 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, |
5790 | DWARF_LINE_OPCODE_BASE + line_delta); | |
c5cec899 | 5791 | if (flag_debug_asm) |
a94dbf2c JM |
5792 | fprintf (asm_out_file, |
5793 | "\t%s line %d", ASM_COMMENT_START, current_line); | |
71dfc51f | 5794 | |
a94dbf2c JM |
5795 | fputc ('\n', asm_out_file); |
5796 | } | |
5797 | else | |
5798 | { | |
f19a6894 JW |
5799 | /* This can handle any delta. This takes at least 4 bytes, depending |
5800 | on the value being encoded. */ | |
a94dbf2c | 5801 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); |
c5cec899 | 5802 | if (flag_debug_asm) |
71dfc51f RK |
5803 | fprintf (asm_out_file, "\t%s advance to line %d", |
5804 | ASM_COMMENT_START, current_line); | |
5805 | ||
a94dbf2c JM |
5806 | fputc ('\n', asm_out_file); |
5807 | output_sleb128 (line_offset); | |
5808 | fputc ('\n', asm_out_file); | |
5809 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
5810 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5811 | } |
a3f97cbb JW |
5812 | } |
5813 | ||
f19a6894 JW |
5814 | /* Emit debug info for the address of the end of the function. */ |
5815 | if (0) | |
5816 | { | |
5817 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5818 | if (flag_debug_asm) |
f19a6894 JW |
5819 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5820 | ASM_COMMENT_START); | |
71dfc51f | 5821 | |
f19a6894 JW |
5822 | fputc ('\n', asm_out_file); |
5823 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, text_end_label, prev_line_label); | |
5824 | fputc ('\n', asm_out_file); | |
5825 | } | |
5826 | else | |
5827 | { | |
5828 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5829 | if (flag_debug_asm) |
f19a6894 JW |
5830 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); |
5831 | fputc ('\n', asm_out_file); | |
5832 | output_uleb128 (1 + PTR_SIZE); | |
5833 | fputc ('\n', asm_out_file); | |
5834 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5835 | fputc ('\n', asm_out_file); | |
5836 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_end_label); | |
5837 | fputc ('\n', asm_out_file); | |
5838 | } | |
bdb669cb | 5839 | |
a3f97cbb JW |
5840 | /* Output the marker for the end of the line number info. */ |
5841 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5842 | if (flag_debug_asm) |
71dfc51f RK |
5843 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", ASM_COMMENT_START); |
5844 | ||
a3f97cbb JW |
5845 | fputc ('\n', asm_out_file); |
5846 | output_uleb128 (1); | |
5847 | fputc ('\n', asm_out_file); | |
5848 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
5849 | fputc ('\n', asm_out_file); | |
e90b62db JM |
5850 | |
5851 | function = 0; | |
5852 | current_file = 1; | |
5853 | current_line = 1; | |
5854 | for (lt_index = 0; lt_index < separate_line_info_table_in_use; ) | |
5855 | { | |
5856 | register dw_separate_line_info_ref line_info | |
5857 | = &separate_line_info_table[lt_index]; | |
71dfc51f | 5858 | |
f19a6894 JW |
5859 | /* Emit debug info for the address of the current line. If this is |
5860 | a new function, or the first line of a function, then we need | |
5861 | to handle it differently. */ | |
5c90448c JM |
5862 | ASM_GENERATE_INTERNAL_LABEL (line_label, SEPARATE_LINE_CODE_LABEL, |
5863 | lt_index); | |
e90b62db JM |
5864 | if (function != line_info->function) |
5865 | { | |
5866 | function = line_info->function; | |
71dfc51f | 5867 | |
e90b62db JM |
5868 | /* Set the address register to the first line in the function */ |
5869 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5870 | if (flag_debug_asm) |
e90b62db JM |
5871 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5872 | ASM_COMMENT_START); | |
71dfc51f | 5873 | |
e90b62db JM |
5874 | fputc ('\n', asm_out_file); |
5875 | output_uleb128 (1 + PTR_SIZE); | |
5876 | fputc ('\n', asm_out_file); | |
5877 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5878 | fputc ('\n', asm_out_file); | |
5879 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5880 | fputc ('\n', asm_out_file); | |
5881 | } | |
5882 | else | |
5883 | { | |
f19a6894 JW |
5884 | /* ??? See the DW_LNS_advance_pc comment above. */ |
5885 | if (0) | |
5886 | { | |
5887 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5888 | if (flag_debug_asm) |
f19a6894 JW |
5889 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5890 | ASM_COMMENT_START); | |
71dfc51f | 5891 | |
f19a6894 JW |
5892 | fputc ('\n', asm_out_file); |
5893 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
5894 | prev_line_label); | |
5895 | fputc ('\n', asm_out_file); | |
5896 | } | |
5897 | else | |
5898 | { | |
5899 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5900 | if (flag_debug_asm) |
f19a6894 JW |
5901 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5902 | ASM_COMMENT_START); | |
5903 | fputc ('\n', asm_out_file); | |
5904 | output_uleb128 (1 + PTR_SIZE); | |
5905 | fputc ('\n', asm_out_file); | |
5906 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5907 | fputc ('\n', asm_out_file); | |
5908 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5909 | fputc ('\n', asm_out_file); | |
5910 | } | |
e90b62db | 5911 | } |
f19a6894 | 5912 | strcpy (prev_line_label, line_label); |
71dfc51f | 5913 | |
f19a6894 JW |
5914 | /* Emit debug info for the source file of the current line, if |
5915 | different from the previous line. */ | |
e90b62db JM |
5916 | if (line_info->dw_file_num != current_file) |
5917 | { | |
5918 | current_file = line_info->dw_file_num; | |
5919 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 5920 | if (flag_debug_asm) |
71dfc51f RK |
5921 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
5922 | ||
e90b62db JM |
5923 | fputc ('\n', asm_out_file); |
5924 | output_uleb128 (current_file); | |
c5cec899 | 5925 | if (flag_debug_asm) |
b2932ae5 | 5926 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 5927 | |
e90b62db JM |
5928 | fputc ('\n', asm_out_file); |
5929 | } | |
71dfc51f | 5930 | |
f19a6894 JW |
5931 | /* Emit debug info for the current line number, choosing the encoding |
5932 | that uses the least amount of space. */ | |
e90b62db JM |
5933 | if (line_info->dw_line_num != current_line) |
5934 | { | |
5935 | line_offset = line_info->dw_line_num - current_line; | |
5936 | line_delta = line_offset - DWARF_LINE_BASE; | |
5937 | current_line = line_info->dw_line_num; | |
5938 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
5939 | { | |
5940 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5941 | DWARF_LINE_OPCODE_BASE + line_delta); | |
c5cec899 | 5942 | if (flag_debug_asm) |
71dfc51f RK |
5943 | fprintf (asm_out_file, |
5944 | "\t%s line %d", ASM_COMMENT_START, current_line); | |
5945 | ||
e90b62db JM |
5946 | fputc ('\n', asm_out_file); |
5947 | } | |
5948 | else | |
5949 | { | |
5950 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
c5cec899 | 5951 | if (flag_debug_asm) |
71dfc51f RK |
5952 | fprintf (asm_out_file, "\t%s advance to line %d", |
5953 | ASM_COMMENT_START, current_line); | |
5954 | ||
e90b62db JM |
5955 | fputc ('\n', asm_out_file); |
5956 | output_sleb128 (line_offset); | |
5957 | fputc ('\n', asm_out_file); | |
5958 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
5959 | fputc ('\n', asm_out_file); | |
5960 | } | |
5961 | } | |
71dfc51f | 5962 | |
e90b62db | 5963 | ++lt_index; |
e90b62db JM |
5964 | |
5965 | /* If we're done with a function, end its sequence. */ | |
5966 | if (lt_index == separate_line_info_table_in_use | |
5967 | || separate_line_info_table[lt_index].function != function) | |
5968 | { | |
5969 | current_file = 1; | |
5970 | current_line = 1; | |
71dfc51f | 5971 | |
f19a6894 | 5972 | /* Emit debug info for the address of the end of the function. */ |
5c90448c | 5973 | ASM_GENERATE_INTERNAL_LABEL (line_label, FUNC_END_LABEL, function); |
f19a6894 JW |
5974 | if (0) |
5975 | { | |
5976 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5977 | if (flag_debug_asm) |
f19a6894 JW |
5978 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5979 | ASM_COMMENT_START); | |
5980 | ||
5981 | fputc ('\n', asm_out_file); | |
5982 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
5983 | prev_line_label); | |
5984 | fputc ('\n', asm_out_file); | |
5985 | } | |
5986 | else | |
5987 | { | |
5988 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5989 | if (flag_debug_asm) |
f19a6894 JW |
5990 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5991 | ASM_COMMENT_START); | |
5992 | fputc ('\n', asm_out_file); | |
5993 | output_uleb128 (1 + PTR_SIZE); | |
5994 | fputc ('\n', asm_out_file); | |
5995 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5996 | fputc ('\n', asm_out_file); | |
5997 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5998 | fputc ('\n', asm_out_file); | |
5999 | } | |
e90b62db JM |
6000 | |
6001 | /* Output the marker for the end of this sequence. */ | |
6002 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 6003 | if (flag_debug_asm) |
e90b62db JM |
6004 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", |
6005 | ASM_COMMENT_START); | |
71dfc51f | 6006 | |
e90b62db JM |
6007 | fputc ('\n', asm_out_file); |
6008 | output_uleb128 (1); | |
6009 | fputc ('\n', asm_out_file); | |
6010 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
6011 | fputc ('\n', asm_out_file); | |
6012 | } | |
6013 | } | |
a3f97cbb JW |
6014 | } |
6015 | \f | |
71dfc51f RK |
6016 | /* Given a pointer to a BLOCK node return non-zero if (and only if) the node |
6017 | in question represents the outermost pair of curly braces (i.e. the "body | |
6018 | block") of a function or method. | |
6019 | ||
6020 | For any BLOCK node representing a "body block" of a function or method, the | |
6021 | BLOCK_SUPERCONTEXT of the node will point to another BLOCK node which | |
6022 | represents the outermost (function) scope for the function or method (i.e. | |
6023 | the one which includes the formal parameters). The BLOCK_SUPERCONTEXT of | |
6024 | *that* node in turn will point to the relevant FUNCTION_DECL node. */ | |
6025 | ||
6026 | static inline int | |
a3f97cbb JW |
6027 | is_body_block (stmt) |
6028 | register tree stmt; | |
6029 | { | |
6030 | if (TREE_CODE (stmt) == BLOCK) | |
6031 | { | |
6032 | register tree parent = BLOCK_SUPERCONTEXT (stmt); | |
6033 | ||
6034 | if (TREE_CODE (parent) == BLOCK) | |
6035 | { | |
6036 | register tree grandparent = BLOCK_SUPERCONTEXT (parent); | |
6037 | ||
6038 | if (TREE_CODE (grandparent) == FUNCTION_DECL) | |
6039 | return 1; | |
6040 | } | |
6041 | } | |
71dfc51f | 6042 | |
a3f97cbb JW |
6043 | return 0; |
6044 | } | |
6045 | ||
a3f97cbb JW |
6046 | /* Given a pointer to a tree node for some base type, return a pointer to |
6047 | a DIE that describes the given type. | |
6048 | ||
6049 | This routine must only be called for GCC type nodes that correspond to | |
6050 | Dwarf base (fundamental) types. */ | |
71dfc51f | 6051 | |
a3f97cbb JW |
6052 | static dw_die_ref |
6053 | base_type_die (type) | |
6054 | register tree type; | |
6055 | { | |
a9d38797 JM |
6056 | register dw_die_ref base_type_result; |
6057 | register char *type_name; | |
6058 | register enum dwarf_type encoding; | |
71dfc51f | 6059 | register tree name = TYPE_NAME (type); |
a3f97cbb | 6060 | |
a9d38797 JM |
6061 | if (TREE_CODE (type) == ERROR_MARK |
6062 | || TREE_CODE (type) == VOID_TYPE) | |
a3f97cbb JW |
6063 | return 0; |
6064 | ||
71dfc51f RK |
6065 | if (TREE_CODE (name) == TYPE_DECL) |
6066 | name = DECL_NAME (name); | |
6067 | type_name = IDENTIFIER_POINTER (name); | |
a9d38797 | 6068 | |
a3f97cbb JW |
6069 | switch (TREE_CODE (type)) |
6070 | { | |
a3f97cbb | 6071 | case INTEGER_TYPE: |
a9d38797 | 6072 | /* Carefully distinguish the C character types, without messing |
a3f97cbb JW |
6073 | up if the language is not C. Note that we check only for the names |
6074 | that contain spaces; other names might occur by coincidence in other | |
6075 | languages. */ | |
a9d38797 JM |
6076 | if (! (TYPE_PRECISION (type) == CHAR_TYPE_SIZE |
6077 | && (type == char_type_node | |
6078 | || ! strcmp (type_name, "signed char") | |
6079 | || ! strcmp (type_name, "unsigned char")))) | |
a3f97cbb | 6080 | { |
a9d38797 JM |
6081 | if (TREE_UNSIGNED (type)) |
6082 | encoding = DW_ATE_unsigned; | |
6083 | else | |
6084 | encoding = DW_ATE_signed; | |
6085 | break; | |
a3f97cbb | 6086 | } |
a9d38797 | 6087 | /* else fall through */ |
a3f97cbb | 6088 | |
a9d38797 JM |
6089 | case CHAR_TYPE: |
6090 | /* GNU Pascal/Ada CHAR type. Not used in C. */ | |
6091 | if (TREE_UNSIGNED (type)) | |
6092 | encoding = DW_ATE_unsigned_char; | |
6093 | else | |
6094 | encoding = DW_ATE_signed_char; | |
a3f97cbb JW |
6095 | break; |
6096 | ||
6097 | case REAL_TYPE: | |
a9d38797 | 6098 | encoding = DW_ATE_float; |
a3f97cbb JW |
6099 | break; |
6100 | ||
6101 | case COMPLEX_TYPE: | |
a9d38797 | 6102 | encoding = DW_ATE_complex_float; |
a3f97cbb JW |
6103 | break; |
6104 | ||
6105 | case BOOLEAN_TYPE: | |
a9d38797 JM |
6106 | /* GNU FORTRAN/Ada/C++ BOOLEAN type. */ |
6107 | encoding = DW_ATE_boolean; | |
a3f97cbb JW |
6108 | break; |
6109 | ||
6110 | default: | |
a9d38797 | 6111 | abort (); /* No other TREE_CODEs are Dwarf fundamental types. */ |
a3f97cbb JW |
6112 | } |
6113 | ||
a9d38797 JM |
6114 | base_type_result = new_die (DW_TAG_base_type, comp_unit_die); |
6115 | add_AT_string (base_type_result, DW_AT_name, type_name); | |
6116 | add_AT_unsigned (base_type_result, DW_AT_byte_size, | |
6117 | TYPE_PRECISION (type) / BITS_PER_UNIT); | |
6118 | add_AT_unsigned (base_type_result, DW_AT_encoding, encoding); | |
a3f97cbb JW |
6119 | |
6120 | return base_type_result; | |
6121 | } | |
6122 | ||
6123 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a pointer to | |
6124 | the Dwarf "root" type for the given input type. The Dwarf "root" type of | |
6125 | a given type is generally the same as the given type, except that if the | |
6126 | given type is a pointer or reference type, then the root type of the given | |
6127 | type is the root type of the "basis" type for the pointer or reference | |
6128 | type. (This definition of the "root" type is recursive.) Also, the root | |
6129 | type of a `const' qualified type or a `volatile' qualified type is the | |
6130 | root type of the given type without the qualifiers. */ | |
71dfc51f | 6131 | |
a3f97cbb JW |
6132 | static tree |
6133 | root_type (type) | |
6134 | register tree type; | |
6135 | { | |
6136 | if (TREE_CODE (type) == ERROR_MARK) | |
6137 | return error_mark_node; | |
6138 | ||
6139 | switch (TREE_CODE (type)) | |
6140 | { | |
6141 | case ERROR_MARK: | |
6142 | return error_mark_node; | |
6143 | ||
6144 | case POINTER_TYPE: | |
6145 | case REFERENCE_TYPE: | |
6146 | return type_main_variant (root_type (TREE_TYPE (type))); | |
6147 | ||
6148 | default: | |
6149 | return type_main_variant (type); | |
6150 | } | |
6151 | } | |
6152 | ||
6153 | /* Given a pointer to an arbitrary ..._TYPE tree node, return non-zero if the | |
6154 | given input type is a Dwarf "fundamental" type. Otherwise return null. */ | |
71dfc51f RK |
6155 | |
6156 | static inline int | |
a3f97cbb JW |
6157 | is_base_type (type) |
6158 | register tree type; | |
6159 | { | |
6160 | switch (TREE_CODE (type)) | |
6161 | { | |
6162 | case ERROR_MARK: | |
6163 | case VOID_TYPE: | |
6164 | case INTEGER_TYPE: | |
6165 | case REAL_TYPE: | |
6166 | case COMPLEX_TYPE: | |
6167 | case BOOLEAN_TYPE: | |
6168 | case CHAR_TYPE: | |
6169 | return 1; | |
6170 | ||
6171 | case SET_TYPE: | |
6172 | case ARRAY_TYPE: | |
6173 | case RECORD_TYPE: | |
6174 | case UNION_TYPE: | |
6175 | case QUAL_UNION_TYPE: | |
6176 | case ENUMERAL_TYPE: | |
6177 | case FUNCTION_TYPE: | |
6178 | case METHOD_TYPE: | |
6179 | case POINTER_TYPE: | |
6180 | case REFERENCE_TYPE: | |
6181 | case FILE_TYPE: | |
6182 | case OFFSET_TYPE: | |
6183 | case LANG_TYPE: | |
6184 | return 0; | |
6185 | ||
6186 | default: | |
6187 | abort (); | |
6188 | } | |
71dfc51f | 6189 | |
a3f97cbb JW |
6190 | return 0; |
6191 | } | |
6192 | ||
6193 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a debugging | |
6194 | entry that chains various modifiers in front of the given type. */ | |
71dfc51f | 6195 | |
a3f97cbb JW |
6196 | static dw_die_ref |
6197 | modified_type_die (type, is_const_type, is_volatile_type, context_die) | |
6198 | register tree type; | |
6199 | register int is_const_type; | |
6200 | register int is_volatile_type; | |
6201 | register dw_die_ref context_die; | |
6202 | { | |
6203 | register enum tree_code code = TREE_CODE (type); | |
6204 | register dw_die_ref mod_type_die = NULL; | |
6205 | register dw_die_ref sub_die = NULL; | |
dfcf9891 | 6206 | register tree item_type = NULL; |
a3f97cbb JW |
6207 | |
6208 | if (code != ERROR_MARK) | |
6209 | { | |
a94dbf2c | 6210 | type = build_type_variant (type, is_const_type, is_volatile_type); |
bdb669cb JM |
6211 | |
6212 | mod_type_die = lookup_type_die (type); | |
6213 | if (mod_type_die) | |
6214 | return mod_type_die; | |
6215 | ||
a94dbf2c JM |
6216 | /* Handle C typedef types. */ |
6217 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
6218 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
6219 | { | |
6220 | tree dtype = TREE_TYPE (TYPE_NAME (type)); | |
6221 | if (type == dtype) | |
6222 | { | |
6223 | /* For a named type, use the typedef. */ | |
6224 | gen_type_die (type, context_die); | |
6225 | mod_type_die = lookup_type_die (type); | |
6226 | } | |
71dfc51f | 6227 | |
a94dbf2c JM |
6228 | else if (is_const_type < TYPE_READONLY (dtype) |
6229 | || is_volatile_type < TYPE_VOLATILE (dtype)) | |
6230 | /* cv-unqualified version of named type. Just use the unnamed | |
6231 | type to which it refers. */ | |
71dfc51f RK |
6232 | mod_type_die |
6233 | = modified_type_die (DECL_ORIGINAL_TYPE (TYPE_NAME (type)), | |
6234 | is_const_type, is_volatile_type, | |
6235 | context_die); | |
6236 | /* Else cv-qualified version of named type; fall through. */ | |
a94dbf2c JM |
6237 | } |
6238 | ||
6239 | if (mod_type_die) | |
6240 | /* OK */; | |
6241 | else if (is_const_type) | |
a3f97cbb | 6242 | { |
ab72d377 | 6243 | mod_type_die = new_die (DW_TAG_const_type, comp_unit_die); |
a9d38797 | 6244 | sub_die = modified_type_die (type, 0, is_volatile_type, context_die); |
a3f97cbb JW |
6245 | } |
6246 | else if (is_volatile_type) | |
6247 | { | |
ab72d377 | 6248 | mod_type_die = new_die (DW_TAG_volatile_type, comp_unit_die); |
a9d38797 | 6249 | sub_die = modified_type_die (type, 0, 0, context_die); |
a3f97cbb JW |
6250 | } |
6251 | else if (code == POINTER_TYPE) | |
6252 | { | |
ab72d377 | 6253 | mod_type_die = new_die (DW_TAG_pointer_type, comp_unit_die); |
a3f97cbb | 6254 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 6255 | #if 0 |
a3f97cbb | 6256 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 6257 | #endif |
a3f97cbb | 6258 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
6259 | } |
6260 | else if (code == REFERENCE_TYPE) | |
6261 | { | |
ab72d377 | 6262 | mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die); |
a3f97cbb | 6263 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 6264 | #if 0 |
a3f97cbb | 6265 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 6266 | #endif |
a3f97cbb | 6267 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
6268 | } |
6269 | else if (is_base_type (type)) | |
71dfc51f | 6270 | mod_type_die = base_type_die (type); |
a3f97cbb JW |
6271 | else |
6272 | { | |
4b674448 JM |
6273 | gen_type_die (type, context_die); |
6274 | ||
a3f97cbb JW |
6275 | /* We have to get the type_main_variant here (and pass that to the |
6276 | `lookup_type_die' routine) because the ..._TYPE node we have | |
6277 | might simply be a *copy* of some original type node (where the | |
6278 | copy was created to help us keep track of typedef names) and | |
6279 | that copy might have a different TYPE_UID from the original | |
a94dbf2c | 6280 | ..._TYPE node. */ |
a3f97cbb | 6281 | mod_type_die = lookup_type_die (type_main_variant (type)); |
3a88cbd1 JL |
6282 | if (mod_type_die == NULL) |
6283 | abort (); | |
a3f97cbb JW |
6284 | } |
6285 | } | |
71dfc51f | 6286 | |
dfcf9891 JW |
6287 | equate_type_number_to_die (type, mod_type_die); |
6288 | if (item_type) | |
71dfc51f RK |
6289 | /* We must do this after the equate_type_number_to_die call, in case |
6290 | this is a recursive type. This ensures that the modified_type_die | |
6291 | recursion will terminate even if the type is recursive. Recursive | |
6292 | types are possible in Ada. */ | |
6293 | sub_die = modified_type_die (item_type, | |
6294 | TYPE_READONLY (item_type), | |
6295 | TYPE_VOLATILE (item_type), | |
6296 | context_die); | |
6297 | ||
a3f97cbb | 6298 | if (sub_die != NULL) |
71dfc51f RK |
6299 | add_AT_die_ref (mod_type_die, DW_AT_type, sub_die); |
6300 | ||
a3f97cbb JW |
6301 | return mod_type_die; |
6302 | } | |
6303 | ||
a3f97cbb JW |
6304 | /* Given a pointer to an arbitrary ..._TYPE tree node, return true if it is |
6305 | an enumerated type. */ | |
71dfc51f RK |
6306 | |
6307 | static inline int | |
a3f97cbb JW |
6308 | type_is_enum (type) |
6309 | register tree type; | |
6310 | { | |
6311 | return TREE_CODE (type) == ENUMERAL_TYPE; | |
6312 | } | |
6313 | ||
a3f97cbb | 6314 | /* Return a location descriptor that designates a machine register. */ |
71dfc51f | 6315 | |
a3f97cbb JW |
6316 | static dw_loc_descr_ref |
6317 | reg_loc_descriptor (rtl) | |
6318 | register rtx rtl; | |
6319 | { | |
6320 | register dw_loc_descr_ref loc_result = NULL; | |
6321 | register unsigned reg = reg_number (rtl); | |
71dfc51f | 6322 | |
a3f97cbb | 6323 | if (reg >= 0 && reg <= 31) |
71dfc51f | 6324 | loc_result = new_loc_descr (DW_OP_reg0 + reg, 0, 0); |
a3f97cbb | 6325 | else |
71dfc51f RK |
6326 | loc_result = new_loc_descr (DW_OP_regx, reg, 0); |
6327 | ||
a3f97cbb JW |
6328 | return loc_result; |
6329 | } | |
6330 | ||
6331 | /* Return a location descriptor that designates a base+offset location. */ | |
71dfc51f | 6332 | |
a3f97cbb JW |
6333 | static dw_loc_descr_ref |
6334 | based_loc_descr (reg, offset) | |
6335 | unsigned reg; | |
6336 | long int offset; | |
6337 | { | |
6338 | register dw_loc_descr_ref loc_result; | |
810429b7 JM |
6339 | /* For the "frame base", we use the frame pointer or stack pointer |
6340 | registers, since the RTL for local variables is relative to one of | |
6341 | them. */ | |
6342 | register unsigned fp_reg = DBX_REGISTER_NUMBER (frame_pointer_needed | |
b1ccbc24 | 6343 | ? HARD_FRAME_POINTER_REGNUM |
810429b7 | 6344 | : STACK_POINTER_REGNUM); |
71dfc51f | 6345 | |
a3f97cbb | 6346 | if (reg == fp_reg) |
71dfc51f | 6347 | loc_result = new_loc_descr (DW_OP_fbreg, offset, 0); |
a3f97cbb | 6348 | else if (reg >= 0 && reg <= 31) |
71dfc51f | 6349 | loc_result = new_loc_descr (DW_OP_breg0 + reg, offset, 0); |
a3f97cbb | 6350 | else |
71dfc51f RK |
6351 | loc_result = new_loc_descr (DW_OP_bregx, reg, offset); |
6352 | ||
a3f97cbb JW |
6353 | return loc_result; |
6354 | } | |
6355 | ||
6356 | /* Return true if this RTL expression describes a base+offset calculation. */ | |
71dfc51f RK |
6357 | |
6358 | static inline int | |
a3f97cbb JW |
6359 | is_based_loc (rtl) |
6360 | register rtx rtl; | |
6361 | { | |
71dfc51f RK |
6362 | return (GET_CODE (rtl) == PLUS |
6363 | && ((GET_CODE (XEXP (rtl, 0)) == REG | |
6364 | && GET_CODE (XEXP (rtl, 1)) == CONST_INT))); | |
a3f97cbb JW |
6365 | } |
6366 | ||
6367 | /* The following routine converts the RTL for a variable or parameter | |
6368 | (resident in memory) into an equivalent Dwarf representation of a | |
6369 | mechanism for getting the address of that same variable onto the top of a | |
6370 | hypothetical "address evaluation" stack. | |
71dfc51f | 6371 | |
a3f97cbb JW |
6372 | When creating memory location descriptors, we are effectively transforming |
6373 | the RTL for a memory-resident object into its Dwarf postfix expression | |
6374 | equivalent. This routine recursively descends an RTL tree, turning | |
6375 | it into Dwarf postfix code as it goes. */ | |
71dfc51f | 6376 | |
a3f97cbb JW |
6377 | static dw_loc_descr_ref |
6378 | mem_loc_descriptor (rtl) | |
6379 | register rtx rtl; | |
6380 | { | |
6381 | dw_loc_descr_ref mem_loc_result = NULL; | |
6382 | /* Note that for a dynamically sized array, the location we will generate a | |
6383 | description of here will be the lowest numbered location which is | |
6384 | actually within the array. That's *not* necessarily the same as the | |
6385 | zeroth element of the array. */ | |
71dfc51f | 6386 | |
a3f97cbb JW |
6387 | switch (GET_CODE (rtl)) |
6388 | { | |
6389 | case SUBREG: | |
6390 | /* The case of a subreg may arise when we have a local (register) | |
6391 | variable or a formal (register) parameter which doesn't quite fill | |
6392 | up an entire register. For now, just assume that it is | |
6393 | legitimate to make the Dwarf info refer to the whole register which | |
6394 | contains the given subreg. */ | |
6395 | rtl = XEXP (rtl, 0); | |
71dfc51f RK |
6396 | |
6397 | /* ... fall through ... */ | |
a3f97cbb JW |
6398 | |
6399 | case REG: | |
6400 | /* Whenever a register number forms a part of the description of the | |
6401 | method for calculating the (dynamic) address of a memory resident | |
6402 | object, DWARF rules require the register number be referred to as | |
6403 | a "base register". This distinction is not based in any way upon | |
6404 | what category of register the hardware believes the given register | |
6405 | belongs to. This is strictly DWARF terminology we're dealing with | |
6406 | here. Note that in cases where the location of a memory-resident | |
6407 | data object could be expressed as: OP_ADD (OP_BASEREG (basereg), | |
6408 | OP_CONST (0)) the actual DWARF location descriptor that we generate | |
6409 | may just be OP_BASEREG (basereg). This may look deceptively like | |
6410 | the object in question was allocated to a register (rather than in | |
6411 | memory) so DWARF consumers need to be aware of the subtle | |
6412 | distinction between OP_REG and OP_BASEREG. */ | |
6413 | mem_loc_result = based_loc_descr (reg_number (rtl), 0); | |
6414 | break; | |
6415 | ||
6416 | case MEM: | |
6417 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0)); | |
6418 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_deref, 0, 0)); | |
6419 | break; | |
6420 | ||
6421 | case CONST: | |
6422 | case SYMBOL_REF: | |
6423 | mem_loc_result = new_loc_descr (DW_OP_addr, 0, 0); | |
6424 | mem_loc_result->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
6425 | mem_loc_result->dw_loc_oprnd1.v.val_addr = addr_to_string (rtl); | |
6426 | break; | |
6427 | ||
6428 | case PLUS: | |
6429 | if (is_based_loc (rtl)) | |
71dfc51f RK |
6430 | mem_loc_result = based_loc_descr (reg_number (XEXP (rtl, 0)), |
6431 | INTVAL (XEXP (rtl, 1))); | |
a3f97cbb JW |
6432 | else |
6433 | { | |
6434 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0))); | |
6435 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1))); | |
6436 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_plus, 0, 0)); | |
6437 | } | |
6438 | break; | |
6439 | ||
dd2478ae JW |
6440 | case MULT: |
6441 | /* If a pseudo-reg is optimized away, it is possible for it to | |
6442 | be replaced with a MEM containing a multiply. */ | |
6443 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0))); | |
6444 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1))); | |
6445 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_mul, 0, 0)); | |
6446 | break; | |
6447 | ||
a3f97cbb JW |
6448 | case CONST_INT: |
6449 | mem_loc_result = new_loc_descr (DW_OP_constu, INTVAL (rtl), 0); | |
6450 | break; | |
6451 | ||
6452 | default: | |
6453 | abort (); | |
6454 | } | |
71dfc51f | 6455 | |
a3f97cbb JW |
6456 | return mem_loc_result; |
6457 | } | |
6458 | ||
956d6950 | 6459 | /* Return a descriptor that describes the concatenation of two locations. |
4401bf24 JL |
6460 | This is typically a complex variable. */ |
6461 | ||
6462 | static dw_loc_descr_ref | |
6463 | concat_loc_descriptor (x0, x1) | |
6464 | register rtx x0, x1; | |
6465 | { | |
6466 | dw_loc_descr_ref cc_loc_result = NULL; | |
6467 | ||
6468 | if (!is_pseudo_reg (x0) | |
6469 | && (GET_CODE (x0) != MEM || !is_pseudo_reg (XEXP (x0, 0)))) | |
6470 | add_loc_descr (&cc_loc_result, loc_descriptor (x0)); | |
6471 | add_loc_descr (&cc_loc_result, | |
6472 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x0)), 0)); | |
6473 | ||
6474 | if (!is_pseudo_reg (x1) | |
6475 | && (GET_CODE (x1) != MEM || !is_pseudo_reg (XEXP (x1, 0)))) | |
6476 | add_loc_descr (&cc_loc_result, loc_descriptor (x1)); | |
6477 | add_loc_descr (&cc_loc_result, | |
6478 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x1)), 0)); | |
6479 | ||
6480 | return cc_loc_result; | |
6481 | } | |
6482 | ||
a3f97cbb JW |
6483 | /* Output a proper Dwarf location descriptor for a variable or parameter |
6484 | which is either allocated in a register or in a memory location. For a | |
6485 | register, we just generate an OP_REG and the register number. For a | |
6486 | memory location we provide a Dwarf postfix expression describing how to | |
6487 | generate the (dynamic) address of the object onto the address stack. */ | |
71dfc51f | 6488 | |
a3f97cbb JW |
6489 | static dw_loc_descr_ref |
6490 | loc_descriptor (rtl) | |
6491 | register rtx rtl; | |
6492 | { | |
6493 | dw_loc_descr_ref loc_result = NULL; | |
6494 | switch (GET_CODE (rtl)) | |
6495 | { | |
6496 | case SUBREG: | |
a3f97cbb JW |
6497 | /* The case of a subreg may arise when we have a local (register) |
6498 | variable or a formal (register) parameter which doesn't quite fill | |
71dfc51f | 6499 | up an entire register. For now, just assume that it is |
a3f97cbb JW |
6500 | legitimate to make the Dwarf info refer to the whole register which |
6501 | contains the given subreg. */ | |
a3f97cbb | 6502 | rtl = XEXP (rtl, 0); |
71dfc51f RK |
6503 | |
6504 | /* ... fall through ... */ | |
a3f97cbb JW |
6505 | |
6506 | case REG: | |
5c90448c | 6507 | loc_result = reg_loc_descriptor (rtl); |
a3f97cbb JW |
6508 | break; |
6509 | ||
6510 | case MEM: | |
6511 | loc_result = mem_loc_descriptor (XEXP (rtl, 0)); | |
6512 | break; | |
6513 | ||
4401bf24 JL |
6514 | case CONCAT: |
6515 | loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1)); | |
6516 | break; | |
6517 | ||
a3f97cbb | 6518 | default: |
71dfc51f | 6519 | abort (); |
a3f97cbb | 6520 | } |
71dfc51f | 6521 | |
a3f97cbb JW |
6522 | return loc_result; |
6523 | } | |
6524 | ||
6525 | /* Given an unsigned value, round it up to the lowest multiple of `boundary' | |
6526 | which is not less than the value itself. */ | |
71dfc51f RK |
6527 | |
6528 | static inline unsigned | |
a3f97cbb JW |
6529 | ceiling (value, boundary) |
6530 | register unsigned value; | |
6531 | register unsigned boundary; | |
6532 | { | |
6533 | return (((value + boundary - 1) / boundary) * boundary); | |
6534 | } | |
6535 | ||
6536 | /* Given a pointer to what is assumed to be a FIELD_DECL node, return a | |
6537 | pointer to the declared type for the relevant field variable, or return | |
6538 | `integer_type_node' if the given node turns out to be an | |
6539 | ERROR_MARK node. */ | |
71dfc51f RK |
6540 | |
6541 | static inline tree | |
a3f97cbb JW |
6542 | field_type (decl) |
6543 | register tree decl; | |
6544 | { | |
6545 | register tree type; | |
6546 | ||
6547 | if (TREE_CODE (decl) == ERROR_MARK) | |
6548 | return integer_type_node; | |
6549 | ||
6550 | type = DECL_BIT_FIELD_TYPE (decl); | |
71dfc51f | 6551 | if (type == NULL_TREE) |
a3f97cbb JW |
6552 | type = TREE_TYPE (decl); |
6553 | ||
6554 | return type; | |
6555 | } | |
6556 | ||
6557 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
6558 | node, return the alignment in bits for the type, or else return | |
6559 | BITS_PER_WORD if the node actually turns out to be an | |
6560 | ERROR_MARK node. */ | |
71dfc51f RK |
6561 | |
6562 | static inline unsigned | |
a3f97cbb JW |
6563 | simple_type_align_in_bits (type) |
6564 | register tree type; | |
6565 | { | |
6566 | return (TREE_CODE (type) != ERROR_MARK) ? TYPE_ALIGN (type) : BITS_PER_WORD; | |
6567 | } | |
6568 | ||
6569 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
6570 | node, return the size in bits for the type if it is a constant, or else | |
6571 | return the alignment for the type if the type's size is not constant, or | |
6572 | else return BITS_PER_WORD if the type actually turns out to be an | |
6573 | ERROR_MARK node. */ | |
71dfc51f RK |
6574 | |
6575 | static inline unsigned | |
a3f97cbb JW |
6576 | simple_type_size_in_bits (type) |
6577 | register tree type; | |
6578 | { | |
6579 | if (TREE_CODE (type) == ERROR_MARK) | |
6580 | return BITS_PER_WORD; | |
6581 | else | |
6582 | { | |
6583 | register tree type_size_tree = TYPE_SIZE (type); | |
6584 | ||
6585 | if (TREE_CODE (type_size_tree) != INTEGER_CST) | |
6586 | return TYPE_ALIGN (type); | |
6587 | ||
6588 | return (unsigned) TREE_INT_CST_LOW (type_size_tree); | |
6589 | } | |
6590 | } | |
6591 | ||
6592 | /* Given a pointer to what is assumed to be a FIELD_DECL node, compute and | |
6593 | return the byte offset of the lowest addressed byte of the "containing | |
6594 | object" for the given FIELD_DECL, or return 0 if we are unable to | |
6595 | determine what that offset is, either because the argument turns out to | |
6596 | be a pointer to an ERROR_MARK node, or because the offset is actually | |
6597 | variable. (We can't handle the latter case just yet). */ | |
71dfc51f | 6598 | |
a3f97cbb JW |
6599 | static unsigned |
6600 | field_byte_offset (decl) | |
6601 | register tree decl; | |
6602 | { | |
6603 | register unsigned type_align_in_bytes; | |
6604 | register unsigned type_align_in_bits; | |
6605 | register unsigned type_size_in_bits; | |
6606 | register unsigned object_offset_in_align_units; | |
6607 | register unsigned object_offset_in_bits; | |
6608 | register unsigned object_offset_in_bytes; | |
6609 | register tree type; | |
6610 | register tree bitpos_tree; | |
6611 | register tree field_size_tree; | |
6612 | register unsigned bitpos_int; | |
6613 | register unsigned deepest_bitpos; | |
6614 | register unsigned field_size_in_bits; | |
6615 | ||
6616 | if (TREE_CODE (decl) == ERROR_MARK) | |
6617 | return 0; | |
6618 | ||
6619 | if (TREE_CODE (decl) != FIELD_DECL) | |
6620 | abort (); | |
6621 | ||
6622 | type = field_type (decl); | |
6623 | ||
6624 | bitpos_tree = DECL_FIELD_BITPOS (decl); | |
6625 | field_size_tree = DECL_SIZE (decl); | |
6626 | ||
6627 | /* We cannot yet cope with fields whose positions or sizes are variable, so | |
6628 | for now, when we see such things, we simply return 0. Someday, we may | |
6629 | be able to handle such cases, but it will be damn difficult. */ | |
6630 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
6631 | return 0; | |
6632 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); | |
6633 | ||
6634 | if (TREE_CODE (field_size_tree) != INTEGER_CST) | |
6635 | return 0; | |
a3f97cbb | 6636 | |
71dfc51f | 6637 | field_size_in_bits = (unsigned) TREE_INT_CST_LOW (field_size_tree); |
a3f97cbb | 6638 | type_size_in_bits = simple_type_size_in_bits (type); |
a3f97cbb JW |
6639 | type_align_in_bits = simple_type_align_in_bits (type); |
6640 | type_align_in_bytes = type_align_in_bits / BITS_PER_UNIT; | |
6641 | ||
6642 | /* Note that the GCC front-end doesn't make any attempt to keep track of | |
6643 | the starting bit offset (relative to the start of the containing | |
6644 | structure type) of the hypothetical "containing object" for a bit- | |
6645 | field. Thus, when computing the byte offset value for the start of the | |
6646 | "containing object" of a bit-field, we must deduce this information on | |
6647 | our own. This can be rather tricky to do in some cases. For example, | |
6648 | handling the following structure type definition when compiling for an | |
6649 | i386/i486 target (which only aligns long long's to 32-bit boundaries) | |
6650 | can be very tricky: | |
6651 | ||
6652 | struct S { int field1; long long field2:31; }; | |
6653 | ||
6654 | Fortunately, there is a simple rule-of-thumb which can be | |
6655 | used in such cases. When compiling for an i386/i486, GCC will allocate | |
6656 | 8 bytes for the structure shown above. It decides to do this based upon | |
6657 | one simple rule for bit-field allocation. Quite simply, GCC allocates | |
6658 | each "containing object" for each bit-field at the first (i.e. lowest | |
6659 | addressed) legitimate alignment boundary (based upon the required | |
6660 | minimum alignment for the declared type of the field) which it can | |
6661 | possibly use, subject to the condition that there is still enough | |
6662 | available space remaining in the containing object (when allocated at | |
6663 | the selected point) to fully accommodate all of the bits of the | |
6664 | bit-field itself. This simple rule makes it obvious why GCC allocates | |
6665 | 8 bytes for each object of the structure type shown above. When looking | |
6666 | for a place to allocate the "containing object" for `field2', the | |
6667 | compiler simply tries to allocate a 64-bit "containing object" at each | |
6668 | successive 32-bit boundary (starting at zero) until it finds a place to | |
6669 | allocate that 64- bit field such that at least 31 contiguous (and | |
6670 | previously unallocated) bits remain within that selected 64 bit field. | |
6671 | (As it turns out, for the example above, the compiler finds that it is | |
6672 | OK to allocate the "containing object" 64-bit field at bit-offset zero | |
6673 | within the structure type.) Here we attempt to work backwards from the | |
6674 | limited set of facts we're given, and we try to deduce from those facts, | |
6675 | where GCC must have believed that the containing object started (within | |
6676 | the structure type). The value we deduce is then used (by the callers of | |
6677 | this routine) to generate DW_AT_location and DW_AT_bit_offset attributes | |
6678 | for fields (both bit-fields and, in the case of DW_AT_location, regular | |
6679 | fields as well). */ | |
6680 | ||
6681 | /* Figure out the bit-distance from the start of the structure to the | |
6682 | "deepest" bit of the bit-field. */ | |
6683 | deepest_bitpos = bitpos_int + field_size_in_bits; | |
6684 | ||
6685 | /* This is the tricky part. Use some fancy footwork to deduce where the | |
6686 | lowest addressed bit of the containing object must be. */ | |
6687 | object_offset_in_bits | |
6688 | = ceiling (deepest_bitpos, type_align_in_bits) - type_size_in_bits; | |
6689 | ||
6690 | /* Compute the offset of the containing object in "alignment units". */ | |
6691 | object_offset_in_align_units = object_offset_in_bits / type_align_in_bits; | |
6692 | ||
6693 | /* Compute the offset of the containing object in bytes. */ | |
6694 | object_offset_in_bytes = object_offset_in_align_units * type_align_in_bytes; | |
6695 | ||
6696 | return object_offset_in_bytes; | |
6697 | } | |
a3f97cbb | 6698 | \f |
71dfc51f RK |
6699 | /* The following routines define various Dwarf attributes and any data |
6700 | associated with them. */ | |
a3f97cbb | 6701 | |
ef76d03b | 6702 | /* Add a location description attribute value to a DIE. |
a3f97cbb | 6703 | |
ef76d03b | 6704 | This emits location attributes suitable for whole variables and |
a3f97cbb JW |
6705 | whole parameters. Note that the location attributes for struct fields are |
6706 | generated by the routine `data_member_location_attribute' below. */ | |
71dfc51f | 6707 | |
a3f97cbb | 6708 | static void |
ef76d03b | 6709 | add_AT_location_description (die, attr_kind, rtl) |
a3f97cbb | 6710 | dw_die_ref die; |
ef76d03b | 6711 | enum dwarf_attribute attr_kind; |
a3f97cbb JW |
6712 | register rtx rtl; |
6713 | { | |
a3f97cbb JW |
6714 | /* Handle a special case. If we are about to output a location descriptor |
6715 | for a variable or parameter which has been optimized out of existence, | |
6a7a9f01 | 6716 | don't do that. A variable which has been optimized out |
a3f97cbb JW |
6717 | of existence will have a DECL_RTL value which denotes a pseudo-reg. |
6718 | Currently, in some rare cases, variables can have DECL_RTL values which | |
6719 | look like (MEM (REG pseudo-reg#)). These cases are due to bugs | |
6720 | elsewhere in the compiler. We treat such cases as if the variable(s) in | |
6a7a9f01 | 6721 | question had been optimized out of existence. */ |
a3f97cbb | 6722 | |
6a7a9f01 JM |
6723 | if (is_pseudo_reg (rtl) |
6724 | || (GET_CODE (rtl) == MEM | |
4401bf24 JL |
6725 | && is_pseudo_reg (XEXP (rtl, 0))) |
6726 | || (GET_CODE (rtl) == CONCAT | |
6727 | && is_pseudo_reg (XEXP (rtl, 0)) | |
6728 | && is_pseudo_reg (XEXP (rtl, 1)))) | |
6a7a9f01 | 6729 | return; |
a3f97cbb | 6730 | |
6a7a9f01 | 6731 | add_AT_loc (die, attr_kind, loc_descriptor (rtl)); |
a3f97cbb JW |
6732 | } |
6733 | ||
6734 | /* Attach the specialized form of location attribute used for data | |
6735 | members of struct and union types. In the special case of a | |
6736 | FIELD_DECL node which represents a bit-field, the "offset" part | |
6737 | of this special location descriptor must indicate the distance | |
6738 | in bytes from the lowest-addressed byte of the containing struct | |
6739 | or union type to the lowest-addressed byte of the "containing | |
6740 | object" for the bit-field. (See the `field_byte_offset' function | |
6741 | above).. For any given bit-field, the "containing object" is a | |
6742 | hypothetical object (of some integral or enum type) within which | |
6743 | the given bit-field lives. The type of this hypothetical | |
6744 | "containing object" is always the same as the declared type of | |
6745 | the individual bit-field itself (for GCC anyway... the DWARF | |
6746 | spec doesn't actually mandate this). Note that it is the size | |
6747 | (in bytes) of the hypothetical "containing object" which will | |
6748 | be given in the DW_AT_byte_size attribute for this bit-field. | |
6749 | (See the `byte_size_attribute' function below.) It is also used | |
6750 | when calculating the value of the DW_AT_bit_offset attribute. | |
6751 | (See the `bit_offset_attribute' function below). */ | |
71dfc51f | 6752 | |
a3f97cbb JW |
6753 | static void |
6754 | add_data_member_location_attribute (die, decl) | |
6755 | register dw_die_ref die; | |
6756 | register tree decl; | |
6757 | { | |
61b32c02 | 6758 | register unsigned long offset; |
a3f97cbb JW |
6759 | register dw_loc_descr_ref loc_descr; |
6760 | register enum dwarf_location_atom op; | |
6761 | ||
61b32c02 JM |
6762 | if (TREE_CODE (decl) == TREE_VEC) |
6763 | offset = TREE_INT_CST_LOW (BINFO_OFFSET (decl)); | |
6764 | else | |
6765 | offset = field_byte_offset (decl); | |
6766 | ||
a3f97cbb JW |
6767 | /* The DWARF2 standard says that we should assume that the structure address |
6768 | is already on the stack, so we can specify a structure field address | |
6769 | by using DW_OP_plus_uconst. */ | |
71dfc51f | 6770 | |
a3f97cbb JW |
6771 | #ifdef MIPS_DEBUGGING_INFO |
6772 | /* ??? The SGI dwarf reader does not handle the DW_OP_plus_uconst operator | |
6773 | correctly. It works only if we leave the offset on the stack. */ | |
6774 | op = DW_OP_constu; | |
6775 | #else | |
6776 | op = DW_OP_plus_uconst; | |
6777 | #endif | |
71dfc51f | 6778 | |
a3f97cbb JW |
6779 | loc_descr = new_loc_descr (op, offset, 0); |
6780 | add_AT_loc (die, DW_AT_data_member_location, loc_descr); | |
6781 | } | |
6782 | ||
6783 | /* Attach an DW_AT_const_value attribute for a variable or a parameter which | |
6784 | does not have a "location" either in memory or in a register. These | |
6785 | things can arise in GNU C when a constant is passed as an actual parameter | |
6786 | to an inlined function. They can also arise in C++ where declared | |
6787 | constants do not necessarily get memory "homes". */ | |
71dfc51f | 6788 | |
a3f97cbb JW |
6789 | static void |
6790 | add_const_value_attribute (die, rtl) | |
6791 | register dw_die_ref die; | |
6792 | register rtx rtl; | |
6793 | { | |
6794 | switch (GET_CODE (rtl)) | |
6795 | { | |
6796 | case CONST_INT: | |
6797 | /* Note that a CONST_INT rtx could represent either an integer or a | |
6798 | floating-point constant. A CONST_INT is used whenever the constant | |
6799 | will fit into a single word. In all such cases, the original mode | |
6800 | of the constant value is wiped out, and the CONST_INT rtx is | |
6801 | assigned VOIDmode. */ | |
6802 | add_AT_unsigned (die, DW_AT_const_value, (unsigned) INTVAL (rtl)); | |
6803 | break; | |
6804 | ||
6805 | case CONST_DOUBLE: | |
6806 | /* Note that a CONST_DOUBLE rtx could represent either an integer or a | |
6807 | floating-point constant. A CONST_DOUBLE is used whenever the | |
6808 | constant requires more than one word in order to be adequately | |
469ac993 JM |
6809 | represented. We output CONST_DOUBLEs as blocks. */ |
6810 | { | |
6811 | register enum machine_mode mode = GET_MODE (rtl); | |
6812 | ||
6813 | if (GET_MODE_CLASS (mode) == MODE_FLOAT) | |
6814 | { | |
71dfc51f RK |
6815 | register unsigned length = GET_MODE_SIZE (mode) / sizeof (long); |
6816 | long array[4]; | |
6817 | REAL_VALUE_TYPE rv; | |
469ac993 | 6818 | |
71dfc51f | 6819 | REAL_VALUE_FROM_CONST_DOUBLE (rv, rtl); |
469ac993 JM |
6820 | switch (mode) |
6821 | { | |
6822 | case SFmode: | |
71dfc51f | 6823 | REAL_VALUE_TO_TARGET_SINGLE (rv, array[0]); |
469ac993 JM |
6824 | break; |
6825 | ||
6826 | case DFmode: | |
71dfc51f | 6827 | REAL_VALUE_TO_TARGET_DOUBLE (rv, array); |
469ac993 JM |
6828 | break; |
6829 | ||
6830 | case XFmode: | |
6831 | case TFmode: | |
71dfc51f | 6832 | REAL_VALUE_TO_TARGET_LONG_DOUBLE (rv, array); |
469ac993 JM |
6833 | break; |
6834 | ||
6835 | default: | |
6836 | abort (); | |
6837 | } | |
6838 | ||
469ac993 JM |
6839 | add_AT_float (die, DW_AT_const_value, length, array); |
6840 | } | |
6841 | else | |
6842 | add_AT_long_long (die, DW_AT_const_value, | |
6843 | CONST_DOUBLE_HIGH (rtl), CONST_DOUBLE_LOW (rtl)); | |
6844 | } | |
a3f97cbb JW |
6845 | break; |
6846 | ||
6847 | case CONST_STRING: | |
6848 | add_AT_string (die, DW_AT_const_value, XSTR (rtl, 0)); | |
6849 | break; | |
6850 | ||
6851 | case SYMBOL_REF: | |
6852 | case LABEL_REF: | |
6853 | case CONST: | |
6854 | add_AT_addr (die, DW_AT_const_value, addr_to_string (rtl)); | |
6855 | break; | |
6856 | ||
6857 | case PLUS: | |
6858 | /* In cases where an inlined instance of an inline function is passed | |
6859 | the address of an `auto' variable (which is local to the caller) we | |
6860 | can get a situation where the DECL_RTL of the artificial local | |
6861 | variable (for the inlining) which acts as a stand-in for the | |
6862 | corresponding formal parameter (of the inline function) will look | |
6863 | like (plus:SI (reg:SI FRAME_PTR) (const_int ...)). This is not | |
6864 | exactly a compile-time constant expression, but it isn't the address | |
6865 | of the (artificial) local variable either. Rather, it represents the | |
6866 | *value* which the artificial local variable always has during its | |
6867 | lifetime. We currently have no way to represent such quasi-constant | |
6a7a9f01 | 6868 | values in Dwarf, so for now we just punt and generate nothing. */ |
a3f97cbb JW |
6869 | break; |
6870 | ||
6871 | default: | |
6872 | /* No other kinds of rtx should be possible here. */ | |
6873 | abort (); | |
6874 | } | |
6875 | ||
6876 | } | |
6877 | ||
6878 | /* Generate *either* an DW_AT_location attribute or else an DW_AT_const_value | |
6879 | data attribute for a variable or a parameter. We generate the | |
6880 | DW_AT_const_value attribute only in those cases where the given variable | |
6881 | or parameter does not have a true "location" either in memory or in a | |
6882 | register. This can happen (for example) when a constant is passed as an | |
6883 | actual argument in a call to an inline function. (It's possible that | |
6884 | these things can crop up in other ways also.) Note that one type of | |
6885 | constant value which can be passed into an inlined function is a constant | |
6886 | pointer. This can happen for example if an actual argument in an inlined | |
6887 | function call evaluates to a compile-time constant address. */ | |
71dfc51f | 6888 | |
a3f97cbb JW |
6889 | static void |
6890 | add_location_or_const_value_attribute (die, decl) | |
6891 | register dw_die_ref die; | |
6892 | register tree decl; | |
6893 | { | |
6894 | register rtx rtl; | |
6895 | register tree declared_type; | |
6896 | register tree passed_type; | |
6897 | ||
6898 | if (TREE_CODE (decl) == ERROR_MARK) | |
71dfc51f RK |
6899 | return; |
6900 | ||
6901 | if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL) | |
6902 | abort (); | |
6903 | ||
a3f97cbb JW |
6904 | /* Here we have to decide where we are going to say the parameter "lives" |
6905 | (as far as the debugger is concerned). We only have a couple of | |
6906 | choices. GCC provides us with DECL_RTL and with DECL_INCOMING_RTL. | |
71dfc51f | 6907 | |
a3f97cbb | 6908 | DECL_RTL normally indicates where the parameter lives during most of the |
71dfc51f | 6909 | activation of the function. If optimization is enabled however, this |
a3f97cbb JW |
6910 | could be either NULL or else a pseudo-reg. Both of those cases indicate |
6911 | that the parameter doesn't really live anywhere (as far as the code | |
6912 | generation parts of GCC are concerned) during most of the function's | |
6913 | activation. That will happen (for example) if the parameter is never | |
71dfc51f RK |
6914 | referenced within the function. |
6915 | ||
6916 | We could just generate a location descriptor here for all non-NULL | |
6917 | non-pseudo values of DECL_RTL and ignore all of the rest, but we can be | |
6918 | a little nicer than that if we also consider DECL_INCOMING_RTL in cases | |
6919 | where DECL_RTL is NULL or is a pseudo-reg. | |
6920 | ||
6921 | Note however that we can only get away with using DECL_INCOMING_RTL as | |
6922 | a backup substitute for DECL_RTL in certain limited cases. In cases | |
6923 | where DECL_ARG_TYPE (decl) indicates the same type as TREE_TYPE (decl), | |
6924 | we can be sure that the parameter was passed using the same type as it is | |
6925 | declared to have within the function, and that its DECL_INCOMING_RTL | |
6926 | points us to a place where a value of that type is passed. | |
6927 | ||
6928 | In cases where DECL_ARG_TYPE (decl) and TREE_TYPE (decl) are different, | |
6929 | we cannot (in general) use DECL_INCOMING_RTL as a substitute for DECL_RTL | |
6930 | because in these cases DECL_INCOMING_RTL points us to a value of some | |
6931 | type which is *different* from the type of the parameter itself. Thus, | |
6932 | if we tried to use DECL_INCOMING_RTL to generate a location attribute in | |
6933 | such cases, the debugger would end up (for example) trying to fetch a | |
6934 | `float' from a place which actually contains the first part of a | |
6935 | `double'. That would lead to really incorrect and confusing | |
6936 | output at debug-time. | |
6937 | ||
6938 | So, in general, we *do not* use DECL_INCOMING_RTL as a backup for DECL_RTL | |
6939 | in cases where DECL_ARG_TYPE (decl) != TREE_TYPE (decl). There | |
6940 | are a couple of exceptions however. On little-endian machines we can | |
6941 | get away with using DECL_INCOMING_RTL even when DECL_ARG_TYPE (decl) is | |
6942 | not the same as TREE_TYPE (decl), but only when DECL_ARG_TYPE (decl) is | |
6943 | an integral type that is smaller than TREE_TYPE (decl). These cases arise | |
6944 | when (on a little-endian machine) a non-prototyped function has a | |
6945 | parameter declared to be of type `short' or `char'. In such cases, | |
6946 | TREE_TYPE (decl) will be `short' or `char', DECL_ARG_TYPE (decl) will | |
6947 | be `int', and DECL_INCOMING_RTL will point to the lowest-order byte of the | |
6948 | passed `int' value. If the debugger then uses that address to fetch | |
6949 | a `short' or a `char' (on a little-endian machine) the result will be | |
6950 | the correct data, so we allow for such exceptional cases below. | |
6951 | ||
6952 | Note that our goal here is to describe the place where the given formal | |
6953 | parameter lives during most of the function's activation (i.e. between | |
6954 | the end of the prologue and the start of the epilogue). We'll do that | |
6955 | as best as we can. Note however that if the given formal parameter is | |
6956 | modified sometime during the execution of the function, then a stack | |
6957 | backtrace (at debug-time) will show the function as having been | |
6958 | called with the *new* value rather than the value which was | |
6959 | originally passed in. This happens rarely enough that it is not | |
6960 | a major problem, but it *is* a problem, and I'd like to fix it. | |
6961 | ||
6962 | A future version of dwarf2out.c may generate two additional | |
6963 | attributes for any given DW_TAG_formal_parameter DIE which will | |
6964 | describe the "passed type" and the "passed location" for the | |
6965 | given formal parameter in addition to the attributes we now | |
6966 | generate to indicate the "declared type" and the "active | |
6967 | location" for each parameter. This additional set of attributes | |
6968 | could be used by debuggers for stack backtraces. Separately, note | |
6969 | that sometimes DECL_RTL can be NULL and DECL_INCOMING_RTL can be | |
6970 | NULL also. This happens (for example) for inlined-instances of | |
6971 | inline function formal parameters which are never referenced. | |
6972 | This really shouldn't be happening. All PARM_DECL nodes should | |
6973 | get valid non-NULL DECL_INCOMING_RTL values, but integrate.c | |
6974 | doesn't currently generate these values for inlined instances of | |
6975 | inline function parameters, so when we see such cases, we are | |
956d6950 | 6976 | just out-of-luck for the time being (until integrate.c |
a3f97cbb JW |
6977 | gets fixed). */ |
6978 | ||
6979 | /* Use DECL_RTL as the "location" unless we find something better. */ | |
6980 | rtl = DECL_RTL (decl); | |
6981 | ||
6982 | if (TREE_CODE (decl) == PARM_DECL) | |
6983 | { | |
6984 | if (rtl == NULL_RTX || is_pseudo_reg (rtl)) | |
6985 | { | |
6986 | declared_type = type_main_variant (TREE_TYPE (decl)); | |
6987 | passed_type = type_main_variant (DECL_ARG_TYPE (decl)); | |
a3f97cbb | 6988 | |
71dfc51f | 6989 | /* This decl represents a formal parameter which was optimized out. |
a3f97cbb JW |
6990 | Note that DECL_INCOMING_RTL may be NULL in here, but we handle |
6991 | all* cases where (rtl == NULL_RTX) just below. */ | |
6992 | if (declared_type == passed_type) | |
71dfc51f RK |
6993 | rtl = DECL_INCOMING_RTL (decl); |
6994 | else if (! BYTES_BIG_ENDIAN | |
6995 | && TREE_CODE (declared_type) == INTEGER_TYPE | |
6996 | && TYPE_SIZE (declared_type) <= TYPE_SIZE (passed_type)) | |
6997 | rtl = DECL_INCOMING_RTL (decl); | |
a3f97cbb JW |
6998 | } |
6999 | } | |
71dfc51f | 7000 | |
61b32c02 JM |
7001 | if (rtl == NULL_RTX) |
7002 | return; | |
7003 | ||
1914f5da | 7004 | rtl = eliminate_regs (rtl, 0, NULL_RTX); |
6a7a9f01 JM |
7005 | #ifdef LEAF_REG_REMAP |
7006 | if (leaf_function) | |
5f52dcfe | 7007 | leaf_renumber_regs_insn (rtl); |
6a7a9f01 JM |
7008 | #endif |
7009 | ||
a3f97cbb JW |
7010 | switch (GET_CODE (rtl)) |
7011 | { | |
e9a25f70 JL |
7012 | case ADDRESSOF: |
7013 | /* The address of a variable that was optimized away; don't emit | |
7014 | anything. */ | |
7015 | break; | |
7016 | ||
a3f97cbb JW |
7017 | case CONST_INT: |
7018 | case CONST_DOUBLE: | |
7019 | case CONST_STRING: | |
7020 | case SYMBOL_REF: | |
7021 | case LABEL_REF: | |
7022 | case CONST: | |
7023 | case PLUS: | |
7024 | /* DECL_RTL could be (plus (reg ...) (const_int ...)) */ | |
7025 | add_const_value_attribute (die, rtl); | |
7026 | break; | |
7027 | ||
7028 | case MEM: | |
7029 | case REG: | |
7030 | case SUBREG: | |
4401bf24 | 7031 | case CONCAT: |
ef76d03b | 7032 | add_AT_location_description (die, DW_AT_location, rtl); |
a3f97cbb JW |
7033 | break; |
7034 | ||
7035 | default: | |
71dfc51f | 7036 | abort (); |
a3f97cbb JW |
7037 | } |
7038 | } | |
7039 | ||
7040 | /* Generate an DW_AT_name attribute given some string value to be included as | |
7041 | the value of the attribute. */ | |
71dfc51f RK |
7042 | |
7043 | static inline void | |
a3f97cbb JW |
7044 | add_name_attribute (die, name_string) |
7045 | register dw_die_ref die; | |
7046 | register char *name_string; | |
7047 | { | |
71dfc51f RK |
7048 | if (name_string != NULL && *name_string != 0) |
7049 | add_AT_string (die, DW_AT_name, name_string); | |
a3f97cbb JW |
7050 | } |
7051 | ||
7052 | /* Given a tree node describing an array bound (either lower or upper) output | |
466446b0 | 7053 | a representation for that bound. */ |
71dfc51f | 7054 | |
a3f97cbb JW |
7055 | static void |
7056 | add_bound_info (subrange_die, bound_attr, bound) | |
7057 | register dw_die_ref subrange_die; | |
7058 | register enum dwarf_attribute bound_attr; | |
7059 | register tree bound; | |
7060 | { | |
a3f97cbb | 7061 | register unsigned bound_value = 0; |
ef76d03b JW |
7062 | |
7063 | /* If this is an Ada unconstrained array type, then don't emit any debug | |
7064 | info because the array bounds are unknown. They are parameterized when | |
7065 | the type is instantiated. */ | |
7066 | if (contains_placeholder_p (bound)) | |
7067 | return; | |
7068 | ||
a3f97cbb JW |
7069 | switch (TREE_CODE (bound)) |
7070 | { | |
7071 | case ERROR_MARK: | |
7072 | return; | |
7073 | ||
7074 | /* All fixed-bounds are represented by INTEGER_CST nodes. */ | |
7075 | case INTEGER_CST: | |
7076 | bound_value = TREE_INT_CST_LOW (bound); | |
141719a8 JM |
7077 | if (bound_attr == DW_AT_lower_bound |
7078 | && ((is_c_family () && bound_value == 0) | |
7079 | || (is_fortran () && bound_value == 1))) | |
7080 | /* use the default */; | |
7081 | else | |
7082 | add_AT_unsigned (subrange_die, bound_attr, bound_value); | |
a3f97cbb JW |
7083 | break; |
7084 | ||
b1ccbc24 | 7085 | case CONVERT_EXPR: |
a3f97cbb | 7086 | case NOP_EXPR: |
b1ccbc24 RK |
7087 | case NON_LVALUE_EXPR: |
7088 | add_bound_info (subrange_die, bound_attr, TREE_OPERAND (bound, 0)); | |
7089 | break; | |
7090 | ||
a3f97cbb JW |
7091 | case SAVE_EXPR: |
7092 | /* If optimization is turned on, the SAVE_EXPRs that describe how to | |
466446b0 JM |
7093 | access the upper bound values may be bogus. If they refer to a |
7094 | register, they may only describe how to get at these values at the | |
7095 | points in the generated code right after they have just been | |
7096 | computed. Worse yet, in the typical case, the upper bound values | |
7097 | will not even *be* computed in the optimized code (though the | |
7098 | number of elements will), so these SAVE_EXPRs are entirely | |
7099 | bogus. In order to compensate for this fact, we check here to see | |
7100 | if optimization is enabled, and if so, we don't add an attribute | |
7101 | for the (unknown and unknowable) upper bound. This should not | |
7102 | cause too much trouble for existing (stupid?) debuggers because | |
7103 | they have to deal with empty upper bounds location descriptions | |
7104 | anyway in order to be able to deal with incomplete array types. | |
7105 | Of course an intelligent debugger (GDB?) should be able to | |
7106 | comprehend that a missing upper bound specification in a array | |
7107 | type used for a storage class `auto' local array variable | |
7108 | indicates that the upper bound is both unknown (at compile- time) | |
7109 | and unknowable (at run-time) due to optimization. | |
7110 | ||
7111 | We assume that a MEM rtx is safe because gcc wouldn't put the | |
7112 | value there unless it was going to be used repeatedly in the | |
7113 | function, i.e. for cleanups. */ | |
7114 | if (! optimize || GET_CODE (SAVE_EXPR_RTL (bound)) == MEM) | |
a3f97cbb | 7115 | { |
466446b0 JM |
7116 | register dw_die_ref ctx = lookup_decl_die (current_function_decl); |
7117 | register dw_die_ref decl_die = new_die (DW_TAG_variable, ctx); | |
7118 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
7119 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
ef76d03b JW |
7120 | add_AT_location_description (decl_die, DW_AT_location, |
7121 | SAVE_EXPR_RTL (bound)); | |
466446b0 | 7122 | add_AT_die_ref (subrange_die, bound_attr, decl_die); |
a3f97cbb | 7123 | } |
71dfc51f RK |
7124 | |
7125 | /* Else leave out the attribute. */ | |
a3f97cbb | 7126 | break; |
3f76745e | 7127 | |
ef76d03b JW |
7128 | case MAX_EXPR: |
7129 | case VAR_DECL: | |
7130 | /* ??? These types of bounds can be created by the Ada front end, | |
7131 | and it isn't clear how to emit debug info for them. */ | |
7132 | break; | |
7133 | ||
3f76745e JM |
7134 | default: |
7135 | abort (); | |
a3f97cbb JW |
7136 | } |
7137 | } | |
7138 | ||
7139 | /* Note that the block of subscript information for an array type also | |
7140 | includes information about the element type of type given array type. */ | |
71dfc51f | 7141 | |
a3f97cbb JW |
7142 | static void |
7143 | add_subscript_info (type_die, type) | |
7144 | register dw_die_ref type_die; | |
7145 | register tree type; | |
7146 | { | |
7147 | register unsigned dimension_number; | |
7148 | register tree lower, upper; | |
7149 | register dw_die_ref subrange_die; | |
7150 | ||
7151 | /* The GNU compilers represent multidimensional array types as sequences of | |
7152 | one dimensional array types whose element types are themselves array | |
7153 | types. Here we squish that down, so that each multidimensional array | |
7154 | type gets only one array_type DIE in the Dwarf debugging info. The draft | |
7155 | Dwarf specification say that we are allowed to do this kind of | |
7156 | compression in C (because there is no difference between an array or | |
7157 | arrays and a multidimensional array in C) but for other source languages | |
7158 | (e.g. Ada) we probably shouldn't do this. */ | |
71dfc51f | 7159 | |
a3f97cbb JW |
7160 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
7161 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
7162 | We work around this by disabling this feature. See also | |
7163 | gen_array_type_die. */ | |
7164 | #ifndef MIPS_DEBUGGING_INFO | |
7165 | for (dimension_number = 0; | |
7166 | TREE_CODE (type) == ARRAY_TYPE; | |
7167 | type = TREE_TYPE (type), dimension_number++) | |
7168 | { | |
7169 | #endif | |
7170 | register tree domain = TYPE_DOMAIN (type); | |
7171 | ||
7172 | /* Arrays come in three flavors: Unspecified bounds, fixed bounds, | |
7173 | and (in GNU C only) variable bounds. Handle all three forms | |
7174 | here. */ | |
7175 | subrange_die = new_die (DW_TAG_subrange_type, type_die); | |
7176 | if (domain) | |
7177 | { | |
7178 | /* We have an array type with specified bounds. */ | |
7179 | lower = TYPE_MIN_VALUE (domain); | |
7180 | upper = TYPE_MAX_VALUE (domain); | |
7181 | ||
a9d38797 JM |
7182 | /* define the index type. */ |
7183 | if (TREE_TYPE (domain)) | |
ef76d03b JW |
7184 | { |
7185 | /* ??? This is probably an Ada unnamed subrange type. Ignore the | |
7186 | TREE_TYPE field. We can't emit debug info for this | |
7187 | because it is an unnamed integral type. */ | |
7188 | if (TREE_CODE (domain) == INTEGER_TYPE | |
7189 | && TYPE_NAME (domain) == NULL_TREE | |
7190 | && TREE_CODE (TREE_TYPE (domain)) == INTEGER_TYPE | |
7191 | && TYPE_NAME (TREE_TYPE (domain)) == NULL_TREE) | |
7192 | ; | |
7193 | else | |
7194 | add_type_attribute (subrange_die, TREE_TYPE (domain), 0, 0, | |
7195 | type_die); | |
7196 | } | |
a9d38797 | 7197 | |
e1ee5cdc RH |
7198 | /* ??? If upper is NULL, the array has unspecified length, |
7199 | but it does have a lower bound. This happens with Fortran | |
7200 | dimension arr(N:*) | |
7201 | Since the debugger is definitely going to need to know N | |
7202 | to produce useful results, go ahead and output the lower | |
7203 | bound solo, and hope the debugger can cope. */ | |
7204 | ||
141719a8 | 7205 | add_bound_info (subrange_die, DW_AT_lower_bound, lower); |
e1ee5cdc RH |
7206 | if (upper) |
7207 | add_bound_info (subrange_die, DW_AT_upper_bound, upper); | |
a3f97cbb JW |
7208 | } |
7209 | else | |
71dfc51f | 7210 | /* We have an array type with an unspecified length. The DWARF-2 |
a9d38797 JM |
7211 | spec does not say how to handle this; let's just leave out the |
7212 | bounds. */ | |
71dfc51f RK |
7213 | ; |
7214 | ||
a3f97cbb JW |
7215 | #ifndef MIPS_DEBUGGING_INFO |
7216 | } | |
7217 | #endif | |
7218 | } | |
7219 | ||
7220 | static void | |
7221 | add_byte_size_attribute (die, tree_node) | |
7222 | dw_die_ref die; | |
7223 | register tree tree_node; | |
7224 | { | |
7225 | register unsigned size; | |
7226 | ||
7227 | switch (TREE_CODE (tree_node)) | |
7228 | { | |
7229 | case ERROR_MARK: | |
7230 | size = 0; | |
7231 | break; | |
7232 | case ENUMERAL_TYPE: | |
7233 | case RECORD_TYPE: | |
7234 | case UNION_TYPE: | |
7235 | case QUAL_UNION_TYPE: | |
7236 | size = int_size_in_bytes (tree_node); | |
7237 | break; | |
7238 | case FIELD_DECL: | |
7239 | /* For a data member of a struct or union, the DW_AT_byte_size is | |
7240 | generally given as the number of bytes normally allocated for an | |
7241 | object of the *declared* type of the member itself. This is true | |
7242 | even for bit-fields. */ | |
7243 | size = simple_type_size_in_bits (field_type (tree_node)) / BITS_PER_UNIT; | |
7244 | break; | |
7245 | default: | |
7246 | abort (); | |
7247 | } | |
7248 | ||
7249 | /* Note that `size' might be -1 when we get to this point. If it is, that | |
7250 | indicates that the byte size of the entity in question is variable. We | |
7251 | have no good way of expressing this fact in Dwarf at the present time, | |
7252 | so just let the -1 pass on through. */ | |
7253 | ||
7254 | add_AT_unsigned (die, DW_AT_byte_size, size); | |
7255 | } | |
7256 | ||
7257 | /* For a FIELD_DECL node which represents a bit-field, output an attribute | |
7258 | which specifies the distance in bits from the highest order bit of the | |
7259 | "containing object" for the bit-field to the highest order bit of the | |
7260 | bit-field itself. | |
7261 | ||
b2932ae5 JM |
7262 | For any given bit-field, the "containing object" is a hypothetical |
7263 | object (of some integral or enum type) within which the given bit-field | |
7264 | lives. The type of this hypothetical "containing object" is always the | |
7265 | same as the declared type of the individual bit-field itself. The | |
7266 | determination of the exact location of the "containing object" for a | |
7267 | bit-field is rather complicated. It's handled by the | |
7268 | `field_byte_offset' function (above). | |
a3f97cbb JW |
7269 | |
7270 | Note that it is the size (in bytes) of the hypothetical "containing object" | |
7271 | which will be given in the DW_AT_byte_size attribute for this bit-field. | |
7272 | (See `byte_size_attribute' above). */ | |
71dfc51f RK |
7273 | |
7274 | static inline void | |
a3f97cbb JW |
7275 | add_bit_offset_attribute (die, decl) |
7276 | register dw_die_ref die; | |
7277 | register tree decl; | |
7278 | { | |
7279 | register unsigned object_offset_in_bytes = field_byte_offset (decl); | |
7280 | register tree type = DECL_BIT_FIELD_TYPE (decl); | |
7281 | register tree bitpos_tree = DECL_FIELD_BITPOS (decl); | |
7282 | register unsigned bitpos_int; | |
7283 | register unsigned highest_order_object_bit_offset; | |
7284 | register unsigned highest_order_field_bit_offset; | |
7285 | register unsigned bit_offset; | |
7286 | ||
3a88cbd1 JL |
7287 | /* Must be a field and a bit field. */ |
7288 | if (!type | |
7289 | || TREE_CODE (decl) != FIELD_DECL) | |
7290 | abort (); | |
a3f97cbb JW |
7291 | |
7292 | /* We can't yet handle bit-fields whose offsets are variable, so if we | |
7293 | encounter such things, just return without generating any attribute | |
7294 | whatsoever. */ | |
7295 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
71dfc51f RK |
7296 | return; |
7297 | ||
a3f97cbb JW |
7298 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); |
7299 | ||
7300 | /* Note that the bit offset is always the distance (in bits) from the | |
7301 | highest-order bit of the "containing object" to the highest-order bit of | |
7302 | the bit-field itself. Since the "high-order end" of any object or field | |
7303 | is different on big-endian and little-endian machines, the computation | |
7304 | below must take account of these differences. */ | |
7305 | highest_order_object_bit_offset = object_offset_in_bytes * BITS_PER_UNIT; | |
7306 | highest_order_field_bit_offset = bitpos_int; | |
7307 | ||
71dfc51f | 7308 | if (! BYTES_BIG_ENDIAN) |
a3f97cbb JW |
7309 | { |
7310 | highest_order_field_bit_offset | |
7311 | += (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl)); | |
7312 | ||
7313 | highest_order_object_bit_offset += simple_type_size_in_bits (type); | |
7314 | } | |
71dfc51f RK |
7315 | |
7316 | bit_offset | |
7317 | = (! BYTES_BIG_ENDIAN | |
7318 | ? highest_order_object_bit_offset - highest_order_field_bit_offset | |
7319 | : highest_order_field_bit_offset - highest_order_object_bit_offset); | |
a3f97cbb JW |
7320 | |
7321 | add_AT_unsigned (die, DW_AT_bit_offset, bit_offset); | |
7322 | } | |
7323 | ||
7324 | /* For a FIELD_DECL node which represents a bit field, output an attribute | |
7325 | which specifies the length in bits of the given field. */ | |
71dfc51f RK |
7326 | |
7327 | static inline void | |
a3f97cbb JW |
7328 | add_bit_size_attribute (die, decl) |
7329 | register dw_die_ref die; | |
7330 | register tree decl; | |
7331 | { | |
3a88cbd1 JL |
7332 | /* Must be a field and a bit field. */ |
7333 | if (TREE_CODE (decl) != FIELD_DECL | |
7334 | || ! DECL_BIT_FIELD_TYPE (decl)) | |
7335 | abort (); | |
a3f97cbb JW |
7336 | add_AT_unsigned (die, DW_AT_bit_size, |
7337 | (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl))); | |
7338 | } | |
7339 | ||
88dad228 | 7340 | /* If the compiled language is ANSI C, then add a 'prototyped' |
a3f97cbb | 7341 | attribute, if arg types are given for the parameters of a function. */ |
71dfc51f RK |
7342 | |
7343 | static inline void | |
a3f97cbb JW |
7344 | add_prototyped_attribute (die, func_type) |
7345 | register dw_die_ref die; | |
7346 | register tree func_type; | |
7347 | { | |
88dad228 JM |
7348 | if (get_AT_unsigned (comp_unit_die, DW_AT_language) == DW_LANG_C89 |
7349 | && TYPE_ARG_TYPES (func_type) != NULL) | |
7350 | add_AT_flag (die, DW_AT_prototyped, 1); | |
a3f97cbb JW |
7351 | } |
7352 | ||
7353 | ||
7354 | /* Add an 'abstract_origin' attribute below a given DIE. The DIE is found | |
7355 | by looking in either the type declaration or object declaration | |
7356 | equate table. */ | |
71dfc51f RK |
7357 | |
7358 | static inline void | |
a3f97cbb JW |
7359 | add_abstract_origin_attribute (die, origin) |
7360 | register dw_die_ref die; | |
7361 | register tree origin; | |
7362 | { | |
7363 | dw_die_ref origin_die = NULL; | |
7364 | if (TREE_CODE_CLASS (TREE_CODE (origin)) == 'd') | |
71dfc51f | 7365 | origin_die = lookup_decl_die (origin); |
a3f97cbb | 7366 | else if (TREE_CODE_CLASS (TREE_CODE (origin)) == 't') |
71dfc51f RK |
7367 | origin_die = lookup_type_die (origin); |
7368 | ||
a3f97cbb JW |
7369 | add_AT_die_ref (die, DW_AT_abstract_origin, origin_die); |
7370 | } | |
7371 | ||
bdb669cb JM |
7372 | /* We do not currently support the pure_virtual attribute. */ |
7373 | ||
71dfc51f | 7374 | static inline void |
a3f97cbb JW |
7375 | add_pure_or_virtual_attribute (die, func_decl) |
7376 | register dw_die_ref die; | |
7377 | register tree func_decl; | |
7378 | { | |
a94dbf2c | 7379 | if (DECL_VINDEX (func_decl)) |
a3f97cbb | 7380 | { |
bdb669cb | 7381 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); |
71dfc51f RK |
7382 | add_AT_loc (die, DW_AT_vtable_elem_location, |
7383 | new_loc_descr (DW_OP_constu, | |
7384 | TREE_INT_CST_LOW (DECL_VINDEX (func_decl)), | |
7385 | 0)); | |
7386 | ||
a94dbf2c JM |
7387 | /* GNU extension: Record what type this method came from originally. */ |
7388 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
7389 | add_AT_die_ref (die, DW_AT_containing_type, | |
7390 | lookup_type_die (DECL_CONTEXT (func_decl))); | |
a3f97cbb JW |
7391 | } |
7392 | } | |
7393 | \f | |
b2932ae5 | 7394 | /* Add source coordinate attributes for the given decl. */ |
71dfc51f | 7395 | |
b2932ae5 JM |
7396 | static void |
7397 | add_src_coords_attributes (die, decl) | |
7398 | register dw_die_ref die; | |
7399 | register tree decl; | |
7400 | { | |
7401 | register unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 7402 | |
b2932ae5 JM |
7403 | add_AT_unsigned (die, DW_AT_decl_file, file_index); |
7404 | add_AT_unsigned (die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
7405 | } | |
7406 | ||
a3f97cbb JW |
7407 | /* Add an DW_AT_name attribute and source coordinate attribute for the |
7408 | given decl, but only if it actually has a name. */ | |
71dfc51f | 7409 | |
a3f97cbb JW |
7410 | static void |
7411 | add_name_and_src_coords_attributes (die, decl) | |
7412 | register dw_die_ref die; | |
7413 | register tree decl; | |
7414 | { | |
61b32c02 | 7415 | register tree decl_name; |
71dfc51f | 7416 | |
a1d7ffe3 | 7417 | decl_name = DECL_NAME (decl); |
71dfc51f | 7418 | if (decl_name != NULL && IDENTIFIER_POINTER (decl_name) != NULL) |
a3f97cbb | 7419 | { |
a1d7ffe3 | 7420 | add_name_attribute (die, dwarf2_name (decl, 0)); |
b2932ae5 | 7421 | add_src_coords_attributes (die, decl); |
a1d7ffe3 JM |
7422 | if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL) |
7423 | && DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl)) | |
7424 | add_AT_string (die, DW_AT_MIPS_linkage_name, | |
7425 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
a3f97cbb JW |
7426 | } |
7427 | } | |
7428 | ||
7429 | /* Push a new declaration scope. */ | |
71dfc51f | 7430 | |
a3f97cbb JW |
7431 | static void |
7432 | push_decl_scope (scope) | |
7433 | tree scope; | |
7434 | { | |
7435 | /* Make room in the decl_scope_table, if necessary. */ | |
7436 | if (decl_scope_table_allocated == decl_scope_depth) | |
7437 | { | |
7438 | decl_scope_table_allocated += DECL_SCOPE_TABLE_INCREMENT; | |
71dfc51f RK |
7439 | decl_scope_table |
7440 | = (tree *) xrealloc (decl_scope_table, | |
7441 | decl_scope_table_allocated * sizeof (tree)); | |
a3f97cbb | 7442 | } |
71dfc51f | 7443 | |
a3f97cbb JW |
7444 | decl_scope_table[decl_scope_depth++] = scope; |
7445 | } | |
7446 | ||
7447 | /* Return the DIE for the scope the immediately contains this declaration. */ | |
71dfc51f | 7448 | |
a3f97cbb | 7449 | static dw_die_ref |
ab72d377 JM |
7450 | scope_die_for (t, context_die) |
7451 | register tree t; | |
a3f97cbb JW |
7452 | register dw_die_ref context_die; |
7453 | { | |
7454 | register dw_die_ref scope_die = NULL; | |
7455 | register tree containing_scope; | |
7456 | register unsigned long i; | |
7457 | ||
7458 | /* Walk back up the declaration tree looking for a place to define | |
7459 | this type. */ | |
ab72d377 JM |
7460 | if (TREE_CODE_CLASS (TREE_CODE (t)) == 't') |
7461 | containing_scope = TYPE_CONTEXT (t); | |
a94dbf2c | 7462 | else if (TREE_CODE (t) == FUNCTION_DECL && DECL_VINDEX (t)) |
ab72d377 JM |
7463 | containing_scope = decl_class_context (t); |
7464 | else | |
7465 | containing_scope = DECL_CONTEXT (t); | |
7466 | ||
ef76d03b JW |
7467 | /* Function-local tags and functions get stuck in limbo until they are |
7468 | fixed up by decls_for_scope. */ | |
7469 | if (context_die == NULL && containing_scope != NULL_TREE | |
7470 | && (TREE_CODE (t) == FUNCTION_DECL || is_tagged_type (t))) | |
7471 | return NULL; | |
7472 | ||
71dfc51f RK |
7473 | if (containing_scope == NULL_TREE) |
7474 | scope_die = comp_unit_die; | |
a3f97cbb JW |
7475 | else |
7476 | { | |
ab72d377 JM |
7477 | for (i = decl_scope_depth, scope_die = context_die; |
7478 | i > 0 && decl_scope_table[i - 1] != containing_scope; | |
7d4440be | 7479 | scope_die = scope_die->die_parent, --i) |
71dfc51f RK |
7480 | ; |
7481 | ||
ab72d377 | 7482 | if (i == 0) |
a3f97cbb | 7483 | { |
3a88cbd1 JL |
7484 | if (scope_die != comp_unit_die |
7485 | || TREE_CODE_CLASS (TREE_CODE (containing_scope)) != 't') | |
7486 | abort (); | |
7487 | if (debug_info_level > DINFO_LEVEL_TERSE | |
7488 | && !TREE_ASM_WRITTEN (containing_scope)) | |
7489 | abort (); | |
a3f97cbb JW |
7490 | } |
7491 | } | |
71dfc51f | 7492 | |
a3f97cbb JW |
7493 | return scope_die; |
7494 | } | |
7495 | ||
7496 | /* Pop a declaration scope. */ | |
71dfc51f | 7497 | static inline void |
a3f97cbb JW |
7498 | pop_decl_scope () |
7499 | { | |
3a88cbd1 JL |
7500 | if (decl_scope_depth <= 0) |
7501 | abort (); | |
a3f97cbb JW |
7502 | --decl_scope_depth; |
7503 | } | |
7504 | ||
7505 | /* Many forms of DIEs require a "type description" attribute. This | |
7506 | routine locates the proper "type descriptor" die for the type given | |
7507 | by 'type', and adds an DW_AT_type attribute below the given die. */ | |
71dfc51f | 7508 | |
a3f97cbb JW |
7509 | static void |
7510 | add_type_attribute (object_die, type, decl_const, decl_volatile, context_die) | |
7511 | register dw_die_ref object_die; | |
7512 | register tree type; | |
7513 | register int decl_const; | |
7514 | register int decl_volatile; | |
7515 | register dw_die_ref context_die; | |
7516 | { | |
7517 | register enum tree_code code = TREE_CODE (type); | |
a3f97cbb JW |
7518 | register dw_die_ref type_die = NULL; |
7519 | ||
ef76d03b JW |
7520 | /* ??? If this type is an unnamed subrange type of an integral or |
7521 | floating-point type, use the inner type. This is because we have no | |
7522 | support for unnamed types in base_type_die. This can happen if this is | |
7523 | an Ada subrange type. Correct solution is emit a subrange type die. */ | |
b1ccbc24 RK |
7524 | if ((code == INTEGER_TYPE || code == REAL_TYPE) |
7525 | && TREE_TYPE (type) != 0 && TYPE_NAME (type) == 0) | |
7526 | type = TREE_TYPE (type), code = TREE_CODE (type); | |
7527 | ||
a3f97cbb | 7528 | if (code == ERROR_MARK) |
b1ccbc24 | 7529 | return; |
a3f97cbb JW |
7530 | |
7531 | /* Handle a special case. For functions whose return type is void, we | |
7532 | generate *no* type attribute. (Note that no object may have type | |
7533 | `void', so this only applies to function return types). */ | |
7534 | if (code == VOID_TYPE) | |
b1ccbc24 | 7535 | return; |
a3f97cbb | 7536 | |
a3f97cbb JW |
7537 | type_die = modified_type_die (type, |
7538 | decl_const || TYPE_READONLY (type), | |
7539 | decl_volatile || TYPE_VOLATILE (type), | |
ab72d377 | 7540 | context_die); |
a3f97cbb | 7541 | if (type_die != NULL) |
71dfc51f | 7542 | add_AT_die_ref (object_die, DW_AT_type, type_die); |
a3f97cbb JW |
7543 | } |
7544 | ||
7545 | /* Given a tree pointer to a struct, class, union, or enum type node, return | |
7546 | a pointer to the (string) tag name for the given type, or zero if the type | |
7547 | was declared without a tag. */ | |
71dfc51f | 7548 | |
a3f97cbb JW |
7549 | static char * |
7550 | type_tag (type) | |
7551 | register tree type; | |
7552 | { | |
7553 | register char *name = 0; | |
7554 | ||
7555 | if (TYPE_NAME (type) != 0) | |
7556 | { | |
7557 | register tree t = 0; | |
7558 | ||
7559 | /* Find the IDENTIFIER_NODE for the type name. */ | |
7560 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
7561 | t = TYPE_NAME (type); | |
bdb669cb | 7562 | |
a3f97cbb JW |
7563 | /* The g++ front end makes the TYPE_NAME of *each* tagged type point to |
7564 | a TYPE_DECL node, regardless of whether or not a `typedef' was | |
bdb669cb | 7565 | involved. */ |
a94dbf2c JM |
7566 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
7567 | && ! DECL_IGNORED_P (TYPE_NAME (type))) | |
a3f97cbb | 7568 | t = DECL_NAME (TYPE_NAME (type)); |
bdb669cb | 7569 | |
a3f97cbb JW |
7570 | /* Now get the name as a string, or invent one. */ |
7571 | if (t != 0) | |
a94dbf2c | 7572 | name = IDENTIFIER_POINTER (t); |
a3f97cbb | 7573 | } |
71dfc51f | 7574 | |
a3f97cbb JW |
7575 | return (name == 0 || *name == '\0') ? 0 : name; |
7576 | } | |
7577 | ||
7578 | /* Return the type associated with a data member, make a special check | |
7579 | for bit field types. */ | |
71dfc51f RK |
7580 | |
7581 | static inline tree | |
a3f97cbb JW |
7582 | member_declared_type (member) |
7583 | register tree member; | |
7584 | { | |
71dfc51f RK |
7585 | return (DECL_BIT_FIELD_TYPE (member) |
7586 | ? DECL_BIT_FIELD_TYPE (member) | |
7587 | : TREE_TYPE (member)); | |
a3f97cbb JW |
7588 | } |
7589 | ||
d291dd49 | 7590 | /* Get the decl's label, as described by its RTL. This may be different |
a3f97cbb | 7591 | from the DECL_NAME name used in the source file. */ |
71dfc51f | 7592 | |
a3f97cbb | 7593 | static char * |
d291dd49 | 7594 | decl_start_label (decl) |
a3f97cbb JW |
7595 | register tree decl; |
7596 | { | |
7597 | rtx x; | |
7598 | char *fnname; | |
7599 | x = DECL_RTL (decl); | |
7600 | if (GET_CODE (x) != MEM) | |
71dfc51f RK |
7601 | abort (); |
7602 | ||
a3f97cbb JW |
7603 | x = XEXP (x, 0); |
7604 | if (GET_CODE (x) != SYMBOL_REF) | |
71dfc51f RK |
7605 | abort (); |
7606 | ||
a3f97cbb JW |
7607 | fnname = XSTR (x, 0); |
7608 | return fnname; | |
7609 | } | |
7610 | \f | |
956d6950 | 7611 | /* These routines generate the internal representation of the DIE's for |
a3f97cbb | 7612 | the compilation unit. Debugging information is collected by walking |
88dad228 | 7613 | the declaration trees passed in from dwarf2out_decl(). */ |
a3f97cbb JW |
7614 | |
7615 | static void | |
7616 | gen_array_type_die (type, context_die) | |
7617 | register tree type; | |
7618 | register dw_die_ref context_die; | |
7619 | { | |
ab72d377 | 7620 | register dw_die_ref scope_die = scope_die_for (type, context_die); |
a9d38797 | 7621 | register dw_die_ref array_die; |
a3f97cbb | 7622 | register tree element_type; |
bdb669cb | 7623 | |
a9d38797 JM |
7624 | /* ??? The SGI dwarf reader fails for array of array of enum types unless |
7625 | the inner array type comes before the outer array type. Thus we must | |
7626 | call gen_type_die before we call new_die. See below also. */ | |
7627 | #ifdef MIPS_DEBUGGING_INFO | |
7628 | gen_type_die (TREE_TYPE (type), context_die); | |
7629 | #endif | |
7630 | ||
7631 | array_die = new_die (DW_TAG_array_type, scope_die); | |
7632 | ||
a3f97cbb JW |
7633 | #if 0 |
7634 | /* We default the array ordering. SDB will probably do | |
7635 | the right things even if DW_AT_ordering is not present. It's not even | |
7636 | an issue until we start to get into multidimensional arrays anyway. If | |
7637 | SDB is ever caught doing the Wrong Thing for multi-dimensional arrays, | |
7638 | then we'll have to put the DW_AT_ordering attribute back in. (But if | |
7639 | and when we find out that we need to put these in, we will only do so | |
7640 | for multidimensional arrays. */ | |
7641 | add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_row_major); | |
7642 | #endif | |
7643 | ||
a9d38797 | 7644 | #ifdef MIPS_DEBUGGING_INFO |
4edb7b60 JM |
7645 | /* The SGI compilers handle arrays of unknown bound by setting |
7646 | AT_declaration and not emitting any subrange DIEs. */ | |
a9d38797 JM |
7647 | if (! TYPE_DOMAIN (type)) |
7648 | add_AT_unsigned (array_die, DW_AT_declaration, 1); | |
7649 | else | |
7650 | #endif | |
7651 | add_subscript_info (array_die, type); | |
a3f97cbb JW |
7652 | |
7653 | equate_type_number_to_die (type, array_die); | |
7654 | ||
7655 | /* Add representation of the type of the elements of this array type. */ | |
7656 | element_type = TREE_TYPE (type); | |
71dfc51f | 7657 | |
a3f97cbb JW |
7658 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
7659 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
7660 | We work around this by disabling this feature. See also | |
7661 | add_subscript_info. */ | |
7662 | #ifndef MIPS_DEBUGGING_INFO | |
71dfc51f RK |
7663 | while (TREE_CODE (element_type) == ARRAY_TYPE) |
7664 | element_type = TREE_TYPE (element_type); | |
7665 | ||
a3f97cbb | 7666 | gen_type_die (element_type, context_die); |
a9d38797 | 7667 | #endif |
a3f97cbb JW |
7668 | |
7669 | add_type_attribute (array_die, element_type, 0, 0, context_die); | |
7670 | } | |
7671 | ||
7672 | static void | |
7673 | gen_set_type_die (type, context_die) | |
7674 | register tree type; | |
7675 | register dw_die_ref context_die; | |
7676 | { | |
71dfc51f RK |
7677 | register dw_die_ref type_die |
7678 | = new_die (DW_TAG_set_type, scope_die_for (type, context_die)); | |
7679 | ||
a3f97cbb | 7680 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
7681 | add_type_attribute (type_die, TREE_TYPE (type), 0, 0, context_die); |
7682 | } | |
7683 | ||
7684 | static void | |
7685 | gen_entry_point_die (decl, context_die) | |
7686 | register tree decl; | |
7687 | register dw_die_ref context_die; | |
7688 | { | |
7689 | register tree origin = decl_ultimate_origin (decl); | |
7690 | register dw_die_ref decl_die = new_die (DW_TAG_entry_point, context_die); | |
7691 | if (origin != NULL) | |
71dfc51f | 7692 | add_abstract_origin_attribute (decl_die, origin); |
a3f97cbb JW |
7693 | else |
7694 | { | |
7695 | add_name_and_src_coords_attributes (decl_die, decl); | |
a3f97cbb JW |
7696 | add_type_attribute (decl_die, TREE_TYPE (TREE_TYPE (decl)), |
7697 | 0, 0, context_die); | |
7698 | } | |
71dfc51f | 7699 | |
a3f97cbb | 7700 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 7701 | equate_decl_number_to_die (decl, decl_die); |
a3f97cbb | 7702 | else |
71dfc51f | 7703 | add_AT_lbl_id (decl_die, DW_AT_low_pc, decl_start_label (decl)); |
a3f97cbb JW |
7704 | } |
7705 | ||
a94dbf2c JM |
7706 | /* Remember a type in the pending_types_list. */ |
7707 | ||
7708 | static void | |
7709 | pend_type (type) | |
7710 | register tree type; | |
7711 | { | |
7712 | if (pending_types == pending_types_allocated) | |
7713 | { | |
7714 | pending_types_allocated += PENDING_TYPES_INCREMENT; | |
7715 | pending_types_list | |
7716 | = (tree *) xrealloc (pending_types_list, | |
7717 | sizeof (tree) * pending_types_allocated); | |
7718 | } | |
71dfc51f | 7719 | |
a94dbf2c JM |
7720 | pending_types_list[pending_types++] = type; |
7721 | } | |
7722 | ||
7723 | /* Output any pending types (from the pending_types list) which we can output | |
7724 | now (taking into account the scope that we are working on now). | |
7725 | ||
7726 | For each type output, remove the given type from the pending_types_list | |
7727 | *before* we try to output it. */ | |
7728 | ||
7729 | static void | |
7730 | output_pending_types_for_scope (context_die) | |
7731 | register dw_die_ref context_die; | |
7732 | { | |
7733 | register tree type; | |
7734 | ||
7735 | while (pending_types) | |
7736 | { | |
7737 | --pending_types; | |
7738 | type = pending_types_list[pending_types]; | |
7739 | gen_type_die (type, context_die); | |
3a88cbd1 JL |
7740 | if (!TREE_ASM_WRITTEN (type)) |
7741 | abort (); | |
a94dbf2c JM |
7742 | } |
7743 | } | |
7744 | ||
a3f97cbb | 7745 | /* Generate a DIE to represent an inlined instance of an enumeration type. */ |
71dfc51f | 7746 | |
a3f97cbb JW |
7747 | static void |
7748 | gen_inlined_enumeration_type_die (type, context_die) | |
7749 | register tree type; | |
7750 | register dw_die_ref context_die; | |
7751 | { | |
71dfc51f RK |
7752 | register dw_die_ref type_die = new_die (DW_TAG_enumeration_type, |
7753 | scope_die_for (type, context_die)); | |
7754 | ||
3a88cbd1 JL |
7755 | if (!TREE_ASM_WRITTEN (type)) |
7756 | abort (); | |
a3f97cbb JW |
7757 | add_abstract_origin_attribute (type_die, type); |
7758 | } | |
7759 | ||
7760 | /* Generate a DIE to represent an inlined instance of a structure type. */ | |
71dfc51f | 7761 | |
a3f97cbb JW |
7762 | static void |
7763 | gen_inlined_structure_type_die (type, context_die) | |
7764 | register tree type; | |
7765 | register dw_die_ref context_die; | |
7766 | { | |
71dfc51f RK |
7767 | register dw_die_ref type_die = new_die (DW_TAG_structure_type, |
7768 | scope_die_for (type, context_die)); | |
7769 | ||
3a88cbd1 JL |
7770 | if (!TREE_ASM_WRITTEN (type)) |
7771 | abort (); | |
a3f97cbb JW |
7772 | add_abstract_origin_attribute (type_die, type); |
7773 | } | |
7774 | ||
7775 | /* Generate a DIE to represent an inlined instance of a union type. */ | |
71dfc51f | 7776 | |
a3f97cbb JW |
7777 | static void |
7778 | gen_inlined_union_type_die (type, context_die) | |
7779 | register tree type; | |
7780 | register dw_die_ref context_die; | |
7781 | { | |
71dfc51f RK |
7782 | register dw_die_ref type_die = new_die (DW_TAG_union_type, |
7783 | scope_die_for (type, context_die)); | |
7784 | ||
3a88cbd1 JL |
7785 | if (!TREE_ASM_WRITTEN (type)) |
7786 | abort (); | |
a3f97cbb JW |
7787 | add_abstract_origin_attribute (type_die, type); |
7788 | } | |
7789 | ||
7790 | /* Generate a DIE to represent an enumeration type. Note that these DIEs | |
7791 | include all of the information about the enumeration values also. Each | |
273dbe67 JM |
7792 | enumerated type name/value is listed as a child of the enumerated type |
7793 | DIE. */ | |
71dfc51f | 7794 | |
a3f97cbb | 7795 | static void |
273dbe67 | 7796 | gen_enumeration_type_die (type, context_die) |
a3f97cbb | 7797 | register tree type; |
a3f97cbb JW |
7798 | register dw_die_ref context_die; |
7799 | { | |
273dbe67 JM |
7800 | register dw_die_ref type_die = lookup_type_die (type); |
7801 | ||
a3f97cbb JW |
7802 | if (type_die == NULL) |
7803 | { | |
7804 | type_die = new_die (DW_TAG_enumeration_type, | |
ab72d377 | 7805 | scope_die_for (type, context_die)); |
a3f97cbb JW |
7806 | equate_type_number_to_die (type, type_die); |
7807 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 7808 | } |
273dbe67 JM |
7809 | else if (! TYPE_SIZE (type)) |
7810 | return; | |
7811 | else | |
7812 | remove_AT (type_die, DW_AT_declaration); | |
7813 | ||
7814 | /* Handle a GNU C/C++ extension, i.e. incomplete enum types. If the | |
7815 | given enum type is incomplete, do not generate the DW_AT_byte_size | |
7816 | attribute or the DW_AT_element_list attribute. */ | |
7817 | if (TYPE_SIZE (type)) | |
a3f97cbb | 7818 | { |
273dbe67 | 7819 | register tree link; |
71dfc51f | 7820 | |
a082c85a | 7821 | TREE_ASM_WRITTEN (type) = 1; |
273dbe67 | 7822 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 7823 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 7824 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 7825 | |
ef76d03b JW |
7826 | /* If the first reference to this type was as the return type of an |
7827 | inline function, then it may not have a parent. Fix this now. */ | |
7828 | if (type_die->die_parent == NULL) | |
7829 | add_child_die (scope_die_for (type, context_die), type_die); | |
7830 | ||
273dbe67 JM |
7831 | for (link = TYPE_FIELDS (type); |
7832 | link != NULL; link = TREE_CHAIN (link)) | |
a3f97cbb | 7833 | { |
273dbe67 | 7834 | register dw_die_ref enum_die = new_die (DW_TAG_enumerator, type_die); |
71dfc51f | 7835 | |
273dbe67 JM |
7836 | add_name_attribute (enum_die, |
7837 | IDENTIFIER_POINTER (TREE_PURPOSE (link))); | |
7838 | add_AT_unsigned (enum_die, DW_AT_const_value, | |
a3f97cbb | 7839 | (unsigned) TREE_INT_CST_LOW (TREE_VALUE (link))); |
a3f97cbb JW |
7840 | } |
7841 | } | |
273dbe67 JM |
7842 | else |
7843 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
7844 | } |
7845 | ||
7846 | ||
7847 | /* Generate a DIE to represent either a real live formal parameter decl or to | |
7848 | represent just the type of some formal parameter position in some function | |
7849 | type. | |
71dfc51f | 7850 | |
a3f97cbb JW |
7851 | Note that this routine is a bit unusual because its argument may be a |
7852 | ..._DECL node (i.e. either a PARM_DECL or perhaps a VAR_DECL which | |
7853 | represents an inlining of some PARM_DECL) or else some sort of a ..._TYPE | |
7854 | node. If it's the former then this function is being called to output a | |
7855 | DIE to represent a formal parameter object (or some inlining thereof). If | |
7856 | it's the latter, then this function is only being called to output a | |
7857 | DW_TAG_formal_parameter DIE to stand as a placeholder for some formal | |
7858 | argument type of some subprogram type. */ | |
71dfc51f | 7859 | |
a94dbf2c | 7860 | static dw_die_ref |
a3f97cbb JW |
7861 | gen_formal_parameter_die (node, context_die) |
7862 | register tree node; | |
7863 | register dw_die_ref context_die; | |
7864 | { | |
71dfc51f RK |
7865 | register dw_die_ref parm_die |
7866 | = new_die (DW_TAG_formal_parameter, context_die); | |
a3f97cbb | 7867 | register tree origin; |
71dfc51f | 7868 | |
a3f97cbb JW |
7869 | switch (TREE_CODE_CLASS (TREE_CODE (node))) |
7870 | { | |
a3f97cbb JW |
7871 | case 'd': |
7872 | origin = decl_ultimate_origin (node); | |
7873 | if (origin != NULL) | |
a94dbf2c | 7874 | add_abstract_origin_attribute (parm_die, origin); |
a3f97cbb JW |
7875 | else |
7876 | { | |
7877 | add_name_and_src_coords_attributes (parm_die, node); | |
7878 | add_type_attribute (parm_die, TREE_TYPE (node), | |
7879 | TREE_READONLY (node), | |
7880 | TREE_THIS_VOLATILE (node), | |
7881 | context_die); | |
bdb669cb JM |
7882 | if (DECL_ARTIFICIAL (node)) |
7883 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb | 7884 | } |
71dfc51f | 7885 | |
141719a8 JM |
7886 | equate_decl_number_to_die (node, parm_die); |
7887 | if (! DECL_ABSTRACT (node)) | |
a94dbf2c | 7888 | add_location_or_const_value_attribute (parm_die, node); |
71dfc51f | 7889 | |
a3f97cbb JW |
7890 | break; |
7891 | ||
a3f97cbb | 7892 | case 't': |
71dfc51f | 7893 | /* We were called with some kind of a ..._TYPE node. */ |
a3f97cbb JW |
7894 | add_type_attribute (parm_die, node, 0, 0, context_die); |
7895 | break; | |
7896 | ||
a3f97cbb JW |
7897 | default: |
7898 | abort (); | |
7899 | } | |
71dfc51f | 7900 | |
a94dbf2c | 7901 | return parm_die; |
a3f97cbb JW |
7902 | } |
7903 | ||
7904 | /* Generate a special type of DIE used as a stand-in for a trailing ellipsis | |
7905 | at the end of an (ANSI prototyped) formal parameters list. */ | |
71dfc51f | 7906 | |
a3f97cbb JW |
7907 | static void |
7908 | gen_unspecified_parameters_die (decl_or_type, context_die) | |
7909 | register tree decl_or_type; | |
7910 | register dw_die_ref context_die; | |
7911 | { | |
7912 | register dw_die_ref parm_die = new_die (DW_TAG_unspecified_parameters, | |
7913 | context_die); | |
a3f97cbb JW |
7914 | } |
7915 | ||
7916 | /* Generate a list of nameless DW_TAG_formal_parameter DIEs (and perhaps a | |
7917 | DW_TAG_unspecified_parameters DIE) to represent the types of the formal | |
7918 | parameters as specified in some function type specification (except for | |
7919 | those which appear as part of a function *definition*). | |
71dfc51f RK |
7920 | |
7921 | Note we must be careful here to output all of the parameter DIEs before* | |
a3f97cbb JW |
7922 | we output any DIEs needed to represent the types of the formal parameters. |
7923 | This keeps svr4 SDB happy because it (incorrectly) thinks that the first | |
7924 | non-parameter DIE it sees ends the formal parameter list. */ | |
71dfc51f | 7925 | |
a3f97cbb JW |
7926 | static void |
7927 | gen_formal_types_die (function_or_method_type, context_die) | |
7928 | register tree function_or_method_type; | |
7929 | register dw_die_ref context_die; | |
7930 | { | |
7931 | register tree link; | |
7932 | register tree formal_type = NULL; | |
7933 | register tree first_parm_type = TYPE_ARG_TYPES (function_or_method_type); | |
7934 | ||
bdb669cb | 7935 | #if 0 |
a3f97cbb JW |
7936 | /* In the case where we are generating a formal types list for a C++ |
7937 | non-static member function type, skip over the first thing on the | |
7938 | TYPE_ARG_TYPES list because it only represents the type of the hidden | |
7939 | `this pointer'. The debugger should be able to figure out (without | |
7940 | being explicitly told) that this non-static member function type takes a | |
7941 | `this pointer' and should be able to figure what the type of that hidden | |
7942 | parameter is from the DW_AT_member attribute of the parent | |
7943 | DW_TAG_subroutine_type DIE. */ | |
7944 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE) | |
7945 | first_parm_type = TREE_CHAIN (first_parm_type); | |
bdb669cb | 7946 | #endif |
a3f97cbb JW |
7947 | |
7948 | /* Make our first pass over the list of formal parameter types and output a | |
7949 | DW_TAG_formal_parameter DIE for each one. */ | |
7950 | for (link = first_parm_type; link; link = TREE_CHAIN (link)) | |
7951 | { | |
a94dbf2c JM |
7952 | register dw_die_ref parm_die; |
7953 | ||
a3f97cbb JW |
7954 | formal_type = TREE_VALUE (link); |
7955 | if (formal_type == void_type_node) | |
7956 | break; | |
7957 | ||
7958 | /* Output a (nameless) DIE to represent the formal parameter itself. */ | |
a94dbf2c JM |
7959 | parm_die = gen_formal_parameter_die (formal_type, context_die); |
7960 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE | |
7961 | && link == first_parm_type) | |
7962 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb JW |
7963 | } |
7964 | ||
7965 | /* If this function type has an ellipsis, add a | |
7966 | DW_TAG_unspecified_parameters DIE to the end of the parameter list. */ | |
7967 | if (formal_type != void_type_node) | |
7968 | gen_unspecified_parameters_die (function_or_method_type, context_die); | |
7969 | ||
7970 | /* Make our second (and final) pass over the list of formal parameter types | |
7971 | and output DIEs to represent those types (as necessary). */ | |
7972 | for (link = TYPE_ARG_TYPES (function_or_method_type); | |
7973 | link; | |
7974 | link = TREE_CHAIN (link)) | |
7975 | { | |
7976 | formal_type = TREE_VALUE (link); | |
7977 | if (formal_type == void_type_node) | |
7978 | break; | |
7979 | ||
b50c02f9 | 7980 | gen_type_die (formal_type, context_die); |
a3f97cbb JW |
7981 | } |
7982 | } | |
7983 | ||
7984 | /* Generate a DIE to represent a declared function (either file-scope or | |
7985 | block-local). */ | |
71dfc51f | 7986 | |
a3f97cbb JW |
7987 | static void |
7988 | gen_subprogram_die (decl, context_die) | |
7989 | register tree decl; | |
7990 | register dw_die_ref context_die; | |
7991 | { | |
7992 | char label_id[MAX_ARTIFICIAL_LABEL_BYTES]; | |
7993 | register tree origin = decl_ultimate_origin (decl); | |
4b674448 | 7994 | register dw_die_ref subr_die; |
a3f97cbb | 7995 | register dw_loc_descr_ref fp_loc = NULL; |
b1ccbc24 | 7996 | register rtx fp_reg; |
a3f97cbb JW |
7997 | register tree fn_arg_types; |
7998 | register tree outer_scope; | |
a94dbf2c | 7999 | register dw_die_ref old_die = lookup_decl_die (decl); |
9c6cd30e JM |
8000 | register int declaration |
8001 | = (current_function_decl != decl | |
8002 | || (context_die | |
8003 | && (context_die->die_tag == DW_TAG_structure_type | |
8004 | || context_die->die_tag == DW_TAG_union_type))); | |
a3f97cbb | 8005 | |
a3f97cbb JW |
8006 | if (origin != NULL) |
8007 | { | |
4b674448 | 8008 | subr_die = new_die (DW_TAG_subprogram, context_die); |
a3f97cbb JW |
8009 | add_abstract_origin_attribute (subr_die, origin); |
8010 | } | |
4401bf24 JL |
8011 | else if (old_die && DECL_ABSTRACT (decl) |
8012 | && get_AT_unsigned (old_die, DW_AT_inline)) | |
8013 | { | |
8014 | /* This must be a redefinition of an extern inline function. | |
8015 | We can just reuse the old die here. */ | |
8016 | subr_die = old_die; | |
8017 | ||
8018 | /* Clear out the inlined attribute and parm types. */ | |
8019 | remove_AT (subr_die, DW_AT_inline); | |
8020 | remove_children (subr_die); | |
8021 | } | |
bdb669cb JM |
8022 | else if (old_die) |
8023 | { | |
4b674448 JM |
8024 | register unsigned file_index |
8025 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
a94dbf2c | 8026 | |
3a88cbd1 JL |
8027 | if (get_AT_flag (old_die, DW_AT_declaration) != 1) |
8028 | abort (); | |
4b674448 JM |
8029 | |
8030 | /* If the definition comes from the same place as the declaration, | |
a94dbf2c JM |
8031 | maybe use the old DIE. We always want the DIE for this function |
8032 | that has the *_pc attributes to be under comp_unit_die so the | |
8033 | debugger can find it. For inlines, that is the concrete instance, | |
8034 | so we can use the old DIE here. For non-inline methods, we want a | |
8035 | specification DIE at toplevel, so we need a new DIE. For local | |
8036 | class methods, this does not apply. */ | |
8037 | if ((DECL_ABSTRACT (decl) || old_die->die_parent == comp_unit_die | |
8038 | || context_die == NULL) | |
8039 | && get_AT_unsigned (old_die, DW_AT_decl_file) == file_index | |
4b674448 JM |
8040 | && (get_AT_unsigned (old_die, DW_AT_decl_line) |
8041 | == DECL_SOURCE_LINE (decl))) | |
bdb669cb | 8042 | { |
4b674448 JM |
8043 | subr_die = old_die; |
8044 | ||
8045 | /* Clear out the declaration attribute and the parm types. */ | |
8046 | remove_AT (subr_die, DW_AT_declaration); | |
8047 | remove_children (subr_die); | |
8048 | } | |
8049 | else | |
8050 | { | |
8051 | subr_die = new_die (DW_TAG_subprogram, context_die); | |
8052 | add_AT_die_ref (subr_die, DW_AT_specification, old_die); | |
bdb669cb JM |
8053 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
8054 | add_AT_unsigned (subr_die, DW_AT_decl_file, file_index); | |
8055 | if (get_AT_unsigned (old_die, DW_AT_decl_line) | |
8056 | != DECL_SOURCE_LINE (decl)) | |
8057 | add_AT_unsigned | |
8058 | (subr_die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
8059 | } | |
8060 | } | |
a3f97cbb JW |
8061 | else |
8062 | { | |
4edb7b60 JM |
8063 | register dw_die_ref scope_die; |
8064 | ||
8065 | if (DECL_CONTEXT (decl)) | |
8066 | scope_die = scope_die_for (decl, context_die); | |
8067 | else | |
8068 | /* Don't put block extern declarations under comp_unit_die. */ | |
8069 | scope_die = context_die; | |
8070 | ||
8071 | subr_die = new_die (DW_TAG_subprogram, scope_die); | |
8072 | ||
273dbe67 JM |
8073 | if (TREE_PUBLIC (decl)) |
8074 | add_AT_flag (subr_die, DW_AT_external, 1); | |
71dfc51f | 8075 | |
a3f97cbb | 8076 | add_name_and_src_coords_attributes (subr_die, decl); |
4927276d JM |
8077 | if (debug_info_level > DINFO_LEVEL_TERSE) |
8078 | { | |
8079 | register tree type = TREE_TYPE (decl); | |
71dfc51f | 8080 | |
4927276d JM |
8081 | add_prototyped_attribute (subr_die, type); |
8082 | add_type_attribute (subr_die, TREE_TYPE (type), 0, 0, context_die); | |
8083 | } | |
71dfc51f | 8084 | |
a3f97cbb | 8085 | add_pure_or_virtual_attribute (subr_die, decl); |
273dbe67 JM |
8086 | if (DECL_ARTIFICIAL (decl)) |
8087 | add_AT_flag (subr_die, DW_AT_artificial, 1); | |
a94dbf2c JM |
8088 | if (TREE_PROTECTED (decl)) |
8089 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_protected); | |
8090 | else if (TREE_PRIVATE (decl)) | |
8091 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 8092 | } |
4edb7b60 | 8093 | |
a94dbf2c JM |
8094 | if (declaration) |
8095 | { | |
8096 | add_AT_flag (subr_die, DW_AT_declaration, 1); | |
8097 | ||
8098 | /* The first time we see a member function, it is in the context of | |
8099 | the class to which it belongs. We make sure of this by emitting | |
8100 | the class first. The next time is the definition, which is | |
8101 | handled above. The two may come from the same source text. */ | |
f6c74b02 | 8102 | if (DECL_CONTEXT (decl)) |
a94dbf2c JM |
8103 | equate_decl_number_to_die (decl, subr_die); |
8104 | } | |
8105 | else if (DECL_ABSTRACT (decl)) | |
a3f97cbb | 8106 | { |
4401bf24 JL |
8107 | /* ??? Checking DECL_DEFER_OUTPUT is correct for static inline functions, |
8108 | but not for extern inline functions. We can't get this completely | |
8109 | correct because information about whether the function was declared | |
8110 | inline is not saved anywhere. */ | |
61b32c02 JM |
8111 | if (DECL_DEFER_OUTPUT (decl)) |
8112 | { | |
8113 | if (DECL_INLINE (decl)) | |
8114 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_inlined); | |
8115 | else | |
8116 | add_AT_unsigned (subr_die, DW_AT_inline, | |
8117 | DW_INL_declared_not_inlined); | |
8118 | } | |
8119 | else if (DECL_INLINE (decl)) | |
8120 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_inlined); | |
8121 | else | |
8122 | abort (); | |
8123 | ||
a3f97cbb JW |
8124 | equate_decl_number_to_die (decl, subr_die); |
8125 | } | |
8126 | else if (!DECL_EXTERNAL (decl)) | |
8127 | { | |
71dfc51f | 8128 | if (origin == NULL_TREE) |
ba7b35df | 8129 | equate_decl_number_to_die (decl, subr_die); |
71dfc51f | 8130 | |
5c90448c JM |
8131 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_BEGIN_LABEL, |
8132 | current_funcdef_number); | |
7d4440be | 8133 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label_id); |
5c90448c JM |
8134 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_END_LABEL, |
8135 | current_funcdef_number); | |
a3f97cbb JW |
8136 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label_id); |
8137 | ||
d291dd49 JM |
8138 | add_pubname (decl, subr_die); |
8139 | add_arange (decl, subr_die); | |
8140 | ||
a3f97cbb | 8141 | #ifdef MIPS_DEBUGGING_INFO |
a3f97cbb JW |
8142 | /* Add a reference to the FDE for this routine. */ |
8143 | add_AT_fde_ref (subr_die, DW_AT_MIPS_fde, current_funcdef_fde); | |
8144 | #endif | |
8145 | ||
810429b7 JM |
8146 | /* Define the "frame base" location for this routine. We use the |
8147 | frame pointer or stack pointer registers, since the RTL for local | |
8148 | variables is relative to one of them. */ | |
b1ccbc24 RK |
8149 | fp_reg |
8150 | = frame_pointer_needed ? hard_frame_pointer_rtx : stack_pointer_rtx; | |
8151 | add_AT_loc (subr_die, DW_AT_frame_base, reg_loc_descriptor (fp_reg)); | |
a3f97cbb | 8152 | |
ef76d03b JW |
8153 | #if 0 |
8154 | /* ??? This fails for nested inline functions, because context_display | |
8155 | is not part of the state saved/restored for inline functions. */ | |
88dad228 | 8156 | if (current_function_needs_context) |
ef76d03b JW |
8157 | add_AT_location_description (subr_die, DW_AT_static_link, |
8158 | lookup_static_chain (decl)); | |
8159 | #endif | |
a3f97cbb JW |
8160 | } |
8161 | ||
8162 | /* Now output descriptions of the arguments for this function. This gets | |
8163 | (unnecessarily?) complex because of the fact that the DECL_ARGUMENT list | |
8164 | for a FUNCTION_DECL doesn't indicate cases where there was a trailing | |
8165 | `...' at the end of the formal parameter list. In order to find out if | |
8166 | there was a trailing ellipsis or not, we must instead look at the type | |
8167 | associated with the FUNCTION_DECL. This will be a node of type | |
8168 | FUNCTION_TYPE. If the chain of type nodes hanging off of this | |
8169 | FUNCTION_TYPE node ends with a void_type_node then there should *not* be | |
8170 | an ellipsis at the end. */ | |
ab72d377 | 8171 | push_decl_scope (decl); |
71dfc51f | 8172 | |
a3f97cbb JW |
8173 | /* In the case where we are describing a mere function declaration, all we |
8174 | need to do here (and all we *can* do here) is to describe the *types* of | |
8175 | its formal parameters. */ | |
4927276d | 8176 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
71dfc51f | 8177 | ; |
4edb7b60 JM |
8178 | else if (declaration) |
8179 | gen_formal_types_die (TREE_TYPE (decl), subr_die); | |
a3f97cbb JW |
8180 | else |
8181 | { | |
8182 | /* Generate DIEs to represent all known formal parameters */ | |
8183 | register tree arg_decls = DECL_ARGUMENTS (decl); | |
8184 | register tree parm; | |
8185 | ||
8186 | /* When generating DIEs, generate the unspecified_parameters DIE | |
8187 | instead if we come across the arg "__builtin_va_alist" */ | |
8188 | for (parm = arg_decls; parm; parm = TREE_CHAIN (parm)) | |
71dfc51f RK |
8189 | if (TREE_CODE (parm) == PARM_DECL) |
8190 | { | |
db3cf6fb MS |
8191 | if (DECL_NAME (parm) |
8192 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
8193 | "__builtin_va_alist")) | |
71dfc51f RK |
8194 | gen_unspecified_parameters_die (parm, subr_die); |
8195 | else | |
8196 | gen_decl_die (parm, subr_die); | |
8197 | } | |
a3f97cbb JW |
8198 | |
8199 | /* Decide whether we need a unspecified_parameters DIE at the end. | |
8200 | There are 2 more cases to do this for: 1) the ansi ... declaration - | |
8201 | this is detectable when the end of the arg list is not a | |
8202 | void_type_node 2) an unprototyped function declaration (not a | |
8203 | definition). This just means that we have no info about the | |
8204 | parameters at all. */ | |
8205 | fn_arg_types = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
71dfc51f | 8206 | if (fn_arg_types != NULL) |
a3f97cbb JW |
8207 | { |
8208 | /* this is the prototyped case, check for ... */ | |
8209 | if (TREE_VALUE (tree_last (fn_arg_types)) != void_type_node) | |
71dfc51f | 8210 | gen_unspecified_parameters_die (decl, subr_die); |
a3f97cbb | 8211 | } |
71dfc51f RK |
8212 | else if (DECL_INITIAL (decl) == NULL_TREE) |
8213 | gen_unspecified_parameters_die (decl, subr_die); | |
a3f97cbb JW |
8214 | } |
8215 | ||
8216 | /* Output Dwarf info for all of the stuff within the body of the function | |
8217 | (if it has one - it may be just a declaration). */ | |
8218 | outer_scope = DECL_INITIAL (decl); | |
8219 | ||
d7248bff JM |
8220 | /* Note that here, `outer_scope' is a pointer to the outermost BLOCK |
8221 | node created to represent a function. This outermost BLOCK actually | |
8222 | represents the outermost binding contour for the function, i.e. the | |
8223 | contour in which the function's formal parameters and labels get | |
8224 | declared. Curiously, it appears that the front end doesn't actually | |
8225 | put the PARM_DECL nodes for the current function onto the BLOCK_VARS | |
8226 | list for this outer scope. (They are strung off of the DECL_ARGUMENTS | |
8227 | list for the function instead.) The BLOCK_VARS list for the | |
8228 | `outer_scope' does provide us with a list of the LABEL_DECL nodes for | |
8229 | the function however, and we output DWARF info for those in | |
8230 | decls_for_scope. Just within the `outer_scope' there will be a BLOCK | |
8231 | node representing the function's outermost pair of curly braces, and | |
8232 | any blocks used for the base and member initializers of a C++ | |
8233 | constructor function. */ | |
4edb7b60 | 8234 | if (! declaration && TREE_CODE (outer_scope) != ERROR_MARK) |
7e23cb16 JM |
8235 | { |
8236 | current_function_has_inlines = 0; | |
8237 | decls_for_scope (outer_scope, subr_die, 0); | |
71dfc51f | 8238 | |
ce61cc73 | 8239 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
7e23cb16 JM |
8240 | if (current_function_has_inlines) |
8241 | { | |
8242 | add_AT_flag (subr_die, DW_AT_MIPS_has_inlines, 1); | |
8243 | if (! comp_unit_has_inlines) | |
8244 | { | |
8245 | add_AT_flag (comp_unit_die, DW_AT_MIPS_has_inlines, 1); | |
8246 | comp_unit_has_inlines = 1; | |
8247 | } | |
8248 | } | |
8249 | #endif | |
8250 | } | |
71dfc51f | 8251 | |
ab72d377 | 8252 | pop_decl_scope (); |
a3f97cbb JW |
8253 | } |
8254 | ||
8255 | /* Generate a DIE to represent a declared data object. */ | |
71dfc51f | 8256 | |
a3f97cbb JW |
8257 | static void |
8258 | gen_variable_die (decl, context_die) | |
8259 | register tree decl; | |
8260 | register dw_die_ref context_die; | |
8261 | { | |
8262 | register tree origin = decl_ultimate_origin (decl); | |
8263 | register dw_die_ref var_die = new_die (DW_TAG_variable, context_die); | |
71dfc51f | 8264 | |
bdb669cb | 8265 | dw_die_ref old_die = lookup_decl_die (decl); |
4edb7b60 JM |
8266 | int declaration |
8267 | = (DECL_EXTERNAL (decl) | |
a94dbf2c JM |
8268 | || current_function_decl != decl_function_context (decl) |
8269 | || context_die->die_tag == DW_TAG_structure_type | |
8270 | || context_die->die_tag == DW_TAG_union_type); | |
4edb7b60 | 8271 | |
a3f97cbb | 8272 | if (origin != NULL) |
71dfc51f | 8273 | add_abstract_origin_attribute (var_die, origin); |
f76b8156 JW |
8274 | /* Loop unrolling can create multiple blocks that refer to the same |
8275 | static variable, so we must test for the DW_AT_declaration flag. */ | |
8276 | /* ??? Loop unrolling/reorder_blocks should perhaps be rewritten to | |
8277 | copy decls and set the DECL_ABSTRACT flag on them instead of | |
8278 | sharing them. */ | |
8279 | else if (old_die && TREE_STATIC (decl) | |
8280 | && get_AT_flag (old_die, DW_AT_declaration) == 1) | |
bdb669cb | 8281 | { |
f76b8156 | 8282 | /* ??? This is an instantiation of a C++ class level static. */ |
bdb669cb JM |
8283 | add_AT_die_ref (var_die, DW_AT_specification, old_die); |
8284 | if (DECL_NAME (decl)) | |
8285 | { | |
8286 | register unsigned file_index | |
8287 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 8288 | |
bdb669cb JM |
8289 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
8290 | add_AT_unsigned (var_die, DW_AT_decl_file, file_index); | |
71dfc51f | 8291 | |
bdb669cb JM |
8292 | if (get_AT_unsigned (old_die, DW_AT_decl_line) |
8293 | != DECL_SOURCE_LINE (decl)) | |
71dfc51f RK |
8294 | |
8295 | add_AT_unsigned (var_die, DW_AT_decl_line, | |
8296 | DECL_SOURCE_LINE (decl)); | |
bdb669cb JM |
8297 | } |
8298 | } | |
a3f97cbb JW |
8299 | else |
8300 | { | |
8301 | add_name_and_src_coords_attributes (var_die, decl); | |
a3f97cbb JW |
8302 | add_type_attribute (var_die, TREE_TYPE (decl), |
8303 | TREE_READONLY (decl), | |
8304 | TREE_THIS_VOLATILE (decl), context_die); | |
71dfc51f | 8305 | |
273dbe67 JM |
8306 | if (TREE_PUBLIC (decl)) |
8307 | add_AT_flag (var_die, DW_AT_external, 1); | |
71dfc51f | 8308 | |
273dbe67 JM |
8309 | if (DECL_ARTIFICIAL (decl)) |
8310 | add_AT_flag (var_die, DW_AT_artificial, 1); | |
71dfc51f | 8311 | |
a94dbf2c JM |
8312 | if (TREE_PROTECTED (decl)) |
8313 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 8314 | |
a94dbf2c JM |
8315 | else if (TREE_PRIVATE (decl)) |
8316 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 8317 | } |
4edb7b60 JM |
8318 | |
8319 | if (declaration) | |
8320 | add_AT_flag (var_die, DW_AT_declaration, 1); | |
8321 | ||
8322 | if ((declaration && decl_class_context (decl)) || DECL_ABSTRACT (decl)) | |
8323 | equate_decl_number_to_die (decl, var_die); | |
8324 | ||
8325 | if (! declaration && ! DECL_ABSTRACT (decl)) | |
a3f97cbb | 8326 | { |
141719a8 | 8327 | equate_decl_number_to_die (decl, var_die); |
a3f97cbb | 8328 | add_location_or_const_value_attribute (var_die, decl); |
d291dd49 | 8329 | add_pubname (decl, var_die); |
a3f97cbb JW |
8330 | } |
8331 | } | |
8332 | ||
8333 | /* Generate a DIE to represent a label identifier. */ | |
71dfc51f | 8334 | |
a3f97cbb JW |
8335 | static void |
8336 | gen_label_die (decl, context_die) | |
8337 | register tree decl; | |
8338 | register dw_die_ref context_die; | |
8339 | { | |
8340 | register tree origin = decl_ultimate_origin (decl); | |
8341 | register dw_die_ref lbl_die = new_die (DW_TAG_label, context_die); | |
8342 | register rtx insn; | |
8343 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
5c90448c | 8344 | char label2[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 8345 | |
a3f97cbb | 8346 | if (origin != NULL) |
71dfc51f | 8347 | add_abstract_origin_attribute (lbl_die, origin); |
a3f97cbb | 8348 | else |
71dfc51f RK |
8349 | add_name_and_src_coords_attributes (lbl_die, decl); |
8350 | ||
a3f97cbb | 8351 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 8352 | equate_decl_number_to_die (decl, lbl_die); |
a3f97cbb JW |
8353 | else |
8354 | { | |
8355 | insn = DECL_RTL (decl); | |
8356 | if (GET_CODE (insn) == CODE_LABEL) | |
8357 | { | |
8358 | /* When optimization is enabled (via -O) some parts of the compiler | |
8359 | (e.g. jump.c and cse.c) may try to delete CODE_LABEL insns which | |
8360 | represent source-level labels which were explicitly declared by | |
8361 | the user. This really shouldn't be happening though, so catch | |
8362 | it if it ever does happen. */ | |
8363 | if (INSN_DELETED_P (insn)) | |
71dfc51f RK |
8364 | abort (); |
8365 | ||
5c90448c JM |
8366 | sprintf (label2, INSN_LABEL_FMT, current_funcdef_number); |
8367 | ASM_GENERATE_INTERNAL_LABEL (label, label2, | |
8368 | (unsigned) INSN_UID (insn)); | |
a3f97cbb JW |
8369 | add_AT_lbl_id (lbl_die, DW_AT_low_pc, label); |
8370 | } | |
8371 | } | |
8372 | } | |
8373 | ||
8374 | /* Generate a DIE for a lexical block. */ | |
71dfc51f | 8375 | |
a3f97cbb | 8376 | static void |
d7248bff | 8377 | gen_lexical_block_die (stmt, context_die, depth) |
a3f97cbb JW |
8378 | register tree stmt; |
8379 | register dw_die_ref context_die; | |
d7248bff | 8380 | int depth; |
a3f97cbb JW |
8381 | { |
8382 | register dw_die_ref stmt_die = new_die (DW_TAG_lexical_block, context_die); | |
8383 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f RK |
8384 | |
8385 | if (! BLOCK_ABSTRACT (stmt)) | |
a3f97cbb | 8386 | { |
5c90448c JM |
8387 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
8388 | next_block_number); | |
a3f97cbb | 8389 | add_AT_lbl_id (stmt_die, DW_AT_low_pc, label); |
5c90448c | 8390 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
a3f97cbb JW |
8391 | add_AT_lbl_id (stmt_die, DW_AT_high_pc, label); |
8392 | } | |
71dfc51f | 8393 | |
7d4440be | 8394 | push_decl_scope (stmt); |
d7248bff | 8395 | decls_for_scope (stmt, stmt_die, depth); |
7d4440be | 8396 | pop_decl_scope (); |
a3f97cbb JW |
8397 | } |
8398 | ||
8399 | /* Generate a DIE for an inlined subprogram. */ | |
71dfc51f | 8400 | |
a3f97cbb | 8401 | static void |
d7248bff | 8402 | gen_inlined_subroutine_die (stmt, context_die, depth) |
a3f97cbb JW |
8403 | register tree stmt; |
8404 | register dw_die_ref context_die; | |
d7248bff | 8405 | int depth; |
a3f97cbb | 8406 | { |
71dfc51f | 8407 | if (! BLOCK_ABSTRACT (stmt)) |
a3f97cbb | 8408 | { |
71dfc51f RK |
8409 | register dw_die_ref subr_die |
8410 | = new_die (DW_TAG_inlined_subroutine, context_die); | |
ab72d377 | 8411 | register tree decl = block_ultimate_origin (stmt); |
d7248bff | 8412 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 8413 | |
ab72d377 | 8414 | add_abstract_origin_attribute (subr_die, decl); |
5c90448c JM |
8415 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
8416 | next_block_number); | |
a3f97cbb | 8417 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label); |
5c90448c | 8418 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
a3f97cbb | 8419 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label); |
ab72d377 | 8420 | push_decl_scope (decl); |
d7248bff | 8421 | decls_for_scope (stmt, subr_die, depth); |
ab72d377 | 8422 | pop_decl_scope (); |
7e23cb16 | 8423 | current_function_has_inlines = 1; |
a3f97cbb | 8424 | } |
a3f97cbb JW |
8425 | } |
8426 | ||
8427 | /* Generate a DIE for a field in a record, or structure. */ | |
71dfc51f | 8428 | |
a3f97cbb JW |
8429 | static void |
8430 | gen_field_die (decl, context_die) | |
8431 | register tree decl; | |
8432 | register dw_die_ref context_die; | |
8433 | { | |
8434 | register dw_die_ref decl_die = new_die (DW_TAG_member, context_die); | |
71dfc51f | 8435 | |
a3f97cbb | 8436 | add_name_and_src_coords_attributes (decl_die, decl); |
a3f97cbb JW |
8437 | add_type_attribute (decl_die, member_declared_type (decl), |
8438 | TREE_READONLY (decl), TREE_THIS_VOLATILE (decl), | |
8439 | context_die); | |
71dfc51f | 8440 | |
a3f97cbb JW |
8441 | /* If this is a bit field... */ |
8442 | if (DECL_BIT_FIELD_TYPE (decl)) | |
8443 | { | |
8444 | add_byte_size_attribute (decl_die, decl); | |
8445 | add_bit_size_attribute (decl_die, decl); | |
8446 | add_bit_offset_attribute (decl_die, decl); | |
8447 | } | |
71dfc51f | 8448 | |
a94dbf2c JM |
8449 | if (TREE_CODE (DECL_FIELD_CONTEXT (decl)) != UNION_TYPE) |
8450 | add_data_member_location_attribute (decl_die, decl); | |
71dfc51f | 8451 | |
273dbe67 JM |
8452 | if (DECL_ARTIFICIAL (decl)) |
8453 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
71dfc51f | 8454 | |
a94dbf2c JM |
8455 | if (TREE_PROTECTED (decl)) |
8456 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 8457 | |
a94dbf2c JM |
8458 | else if (TREE_PRIVATE (decl)) |
8459 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb JW |
8460 | } |
8461 | ||
ab72d377 JM |
8462 | #if 0 |
8463 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. | |
8464 | Use modified_type_die instead. | |
a3f97cbb JW |
8465 | We keep this code here just in case these types of DIEs may be needed to |
8466 | represent certain things in other languages (e.g. Pascal) someday. */ | |
8467 | static void | |
8468 | gen_pointer_type_die (type, context_die) | |
8469 | register tree type; | |
8470 | register dw_die_ref context_die; | |
8471 | { | |
71dfc51f RK |
8472 | register dw_die_ref ptr_die |
8473 | = new_die (DW_TAG_pointer_type, scope_die_for (type, context_die)); | |
8474 | ||
a3f97cbb | 8475 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 8476 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 8477 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb JW |
8478 | } |
8479 | ||
ab72d377 JM |
8480 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. |
8481 | Use modified_type_die instead. | |
a3f97cbb JW |
8482 | We keep this code here just in case these types of DIEs may be needed to |
8483 | represent certain things in other languages (e.g. Pascal) someday. */ | |
8484 | static void | |
8485 | gen_reference_type_die (type, context_die) | |
8486 | register tree type; | |
8487 | register dw_die_ref context_die; | |
8488 | { | |
71dfc51f RK |
8489 | register dw_die_ref ref_die |
8490 | = new_die (DW_TAG_reference_type, scope_die_for (type, context_die)); | |
8491 | ||
a3f97cbb | 8492 | equate_type_number_to_die (type, ref_die); |
a3f97cbb | 8493 | add_type_attribute (ref_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 8494 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb | 8495 | } |
ab72d377 | 8496 | #endif |
a3f97cbb JW |
8497 | |
8498 | /* Generate a DIE for a pointer to a member type. */ | |
8499 | static void | |
8500 | gen_ptr_to_mbr_type_die (type, context_die) | |
8501 | register tree type; | |
8502 | register dw_die_ref context_die; | |
8503 | { | |
71dfc51f RK |
8504 | register dw_die_ref ptr_die |
8505 | = new_die (DW_TAG_ptr_to_member_type, scope_die_for (type, context_die)); | |
8506 | ||
a3f97cbb | 8507 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 8508 | add_AT_die_ref (ptr_die, DW_AT_containing_type, |
bdb669cb | 8509 | lookup_type_die (TYPE_OFFSET_BASETYPE (type))); |
a3f97cbb JW |
8510 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
8511 | } | |
8512 | ||
8513 | /* Generate the DIE for the compilation unit. */ | |
71dfc51f | 8514 | |
a3f97cbb JW |
8515 | static void |
8516 | gen_compile_unit_die (main_input_filename) | |
8517 | register char *main_input_filename; | |
8518 | { | |
8519 | char producer[250]; | |
a3f97cbb JW |
8520 | char *wd = getpwd (); |
8521 | ||
8522 | comp_unit_die = new_die (DW_TAG_compile_unit, NULL); | |
bdb669cb JM |
8523 | add_name_attribute (comp_unit_die, main_input_filename); |
8524 | ||
71dfc51f RK |
8525 | if (wd != NULL) |
8526 | add_AT_string (comp_unit_die, DW_AT_comp_dir, wd); | |
a3f97cbb JW |
8527 | |
8528 | sprintf (producer, "%s %s", language_string, version_string); | |
8529 | ||
8530 | #ifdef MIPS_DEBUGGING_INFO | |
8531 | /* The MIPS/SGI compilers place the 'cc' command line options in the producer | |
8532 | string. The SGI debugger looks for -g, -g1, -g2, or -g3; if they do | |
8533 | not appear in the producer string, the debugger reaches the conclusion | |
8534 | that the object file is stripped and has no debugging information. | |
8535 | To get the MIPS/SGI debugger to believe that there is debugging | |
8536 | information in the object file, we add a -g to the producer string. */ | |
4927276d JM |
8537 | if (debug_info_level > DINFO_LEVEL_TERSE) |
8538 | strcat (producer, " -g"); | |
a3f97cbb JW |
8539 | #endif |
8540 | ||
8541 | add_AT_string (comp_unit_die, DW_AT_producer, producer); | |
a9d38797 | 8542 | |
a3f97cbb | 8543 | if (strcmp (language_string, "GNU C++") == 0) |
a9d38797 | 8544 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C_plus_plus); |
71dfc51f | 8545 | |
a3f97cbb | 8546 | else if (strcmp (language_string, "GNU Ada") == 0) |
a9d38797 | 8547 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Ada83); |
71dfc51f | 8548 | |
a9d38797 JM |
8549 | else if (strcmp (language_string, "GNU F77") == 0) |
8550 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Fortran77); | |
71dfc51f | 8551 | |
bc28c45b RK |
8552 | else if (strcmp (language_string, "GNU Pascal") == 0) |
8553 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Pascal83); | |
8554 | ||
a3f97cbb | 8555 | else if (flag_traditional) |
a9d38797 | 8556 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C); |
71dfc51f | 8557 | |
a3f97cbb | 8558 | else |
a9d38797 JM |
8559 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C89); |
8560 | ||
8561 | #if 0 /* unimplemented */ | |
e90b62db | 8562 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
a9d38797 JM |
8563 | add_AT_unsigned (comp_unit_die, DW_AT_macro_info, 0); |
8564 | #endif | |
a3f97cbb JW |
8565 | } |
8566 | ||
8567 | /* Generate a DIE for a string type. */ | |
71dfc51f | 8568 | |
a3f97cbb JW |
8569 | static void |
8570 | gen_string_type_die (type, context_die) | |
8571 | register tree type; | |
8572 | register dw_die_ref context_die; | |
8573 | { | |
71dfc51f RK |
8574 | register dw_die_ref type_die |
8575 | = new_die (DW_TAG_string_type, scope_die_for (type, context_die)); | |
8576 | ||
bdb669cb | 8577 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
8578 | |
8579 | /* Fudge the string length attribute for now. */ | |
71dfc51f | 8580 | |
a3f97cbb | 8581 | /* TODO: add string length info. |
71dfc51f | 8582 | string_length_attribute (TYPE_MAX_VALUE (TYPE_DOMAIN (type))); |
a3f97cbb JW |
8583 | bound_representation (upper_bound, 0, 'u'); */ |
8584 | } | |
8585 | ||
61b32c02 | 8586 | /* Generate the DIE for a base class. */ |
71dfc51f | 8587 | |
61b32c02 JM |
8588 | static void |
8589 | gen_inheritance_die (binfo, context_die) | |
8590 | register tree binfo; | |
8591 | register dw_die_ref context_die; | |
8592 | { | |
8593 | dw_die_ref die = new_die (DW_TAG_inheritance, context_die); | |
71dfc51f | 8594 | |
61b32c02 JM |
8595 | add_type_attribute (die, BINFO_TYPE (binfo), 0, 0, context_die); |
8596 | add_data_member_location_attribute (die, binfo); | |
71dfc51f | 8597 | |
61b32c02 JM |
8598 | if (TREE_VIA_VIRTUAL (binfo)) |
8599 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); | |
8600 | if (TREE_VIA_PUBLIC (binfo)) | |
8601 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_public); | |
8602 | else if (TREE_VIA_PROTECTED (binfo)) | |
8603 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_protected); | |
8604 | } | |
8605 | ||
956d6950 | 8606 | /* Generate a DIE for a class member. */ |
71dfc51f | 8607 | |
a3f97cbb JW |
8608 | static void |
8609 | gen_member_die (type, context_die) | |
8610 | register tree type; | |
8611 | register dw_die_ref context_die; | |
8612 | { | |
61b32c02 | 8613 | register tree member; |
71dfc51f | 8614 | |
a3f97cbb JW |
8615 | /* If this is not an incomplete type, output descriptions of each of its |
8616 | members. Note that as we output the DIEs necessary to represent the | |
8617 | members of this record or union type, we will also be trying to output | |
8618 | DIEs to represent the *types* of those members. However the `type' | |
8619 | function (above) will specifically avoid generating type DIEs for member | |
8620 | types *within* the list of member DIEs for this (containing) type execpt | |
8621 | for those types (of members) which are explicitly marked as also being | |
8622 | members of this (containing) type themselves. The g++ front- end can | |
8623 | force any given type to be treated as a member of some other | |
8624 | (containing) type by setting the TYPE_CONTEXT of the given (member) type | |
8625 | to point to the TREE node representing the appropriate (containing) | |
8626 | type. */ | |
8627 | ||
61b32c02 JM |
8628 | /* First output info about the base classes. */ |
8629 | if (TYPE_BINFO (type) && TYPE_BINFO_BASETYPES (type)) | |
a3f97cbb | 8630 | { |
61b32c02 JM |
8631 | register tree bases = TYPE_BINFO_BASETYPES (type); |
8632 | register int n_bases = TREE_VEC_LENGTH (bases); | |
8633 | register int i; | |
8634 | ||
8635 | for (i = 0; i < n_bases; i++) | |
8636 | gen_inheritance_die (TREE_VEC_ELT (bases, i), context_die); | |
a3f97cbb JW |
8637 | } |
8638 | ||
61b32c02 JM |
8639 | /* Now output info about the data members and type members. */ |
8640 | for (member = TYPE_FIELDS (type); member; member = TREE_CHAIN (member)) | |
8641 | gen_decl_die (member, context_die); | |
8642 | ||
a3f97cbb | 8643 | /* Now output info about the function members (if any). */ |
61b32c02 JM |
8644 | for (member = TYPE_METHODS (type); member; member = TREE_CHAIN (member)) |
8645 | gen_decl_die (member, context_die); | |
a3f97cbb JW |
8646 | } |
8647 | ||
8648 | /* Generate a DIE for a structure or union type. */ | |
71dfc51f | 8649 | |
a3f97cbb | 8650 | static void |
273dbe67 | 8651 | gen_struct_or_union_type_die (type, context_die) |
a3f97cbb | 8652 | register tree type; |
a3f97cbb JW |
8653 | register dw_die_ref context_die; |
8654 | { | |
273dbe67 | 8655 | register dw_die_ref type_die = lookup_type_die (type); |
a082c85a JM |
8656 | register dw_die_ref scope_die = 0; |
8657 | register int nested = 0; | |
273dbe67 JM |
8658 | |
8659 | if (type_die && ! TYPE_SIZE (type)) | |
8660 | return; | |
a082c85a | 8661 | |
71dfc51f | 8662 | if (TYPE_CONTEXT (type) != NULL_TREE |
a082c85a JM |
8663 | && TREE_CODE_CLASS (TREE_CODE (TYPE_CONTEXT (type))) == 't') |
8664 | nested = 1; | |
8665 | ||
a94dbf2c | 8666 | scope_die = scope_die_for (type, context_die); |
a082c85a JM |
8667 | |
8668 | if (! type_die || (nested && scope_die == comp_unit_die)) | |
273dbe67 | 8669 | /* First occurrence of type or toplevel definition of nested class. */ |
a3f97cbb | 8670 | { |
273dbe67 | 8671 | register dw_die_ref old_die = type_die; |
71dfc51f | 8672 | |
a3f97cbb JW |
8673 | type_die = new_die (TREE_CODE (type) == RECORD_TYPE |
8674 | ? DW_TAG_structure_type : DW_TAG_union_type, | |
a082c85a | 8675 | scope_die); |
a3f97cbb JW |
8676 | equate_type_number_to_die (type, type_die); |
8677 | add_name_attribute (type_die, type_tag (type)); | |
273dbe67 JM |
8678 | if (old_die) |
8679 | add_AT_die_ref (type_die, DW_AT_specification, old_die); | |
a3f97cbb | 8680 | } |
4b674448 | 8681 | else |
273dbe67 | 8682 | remove_AT (type_die, DW_AT_declaration); |
a3f97cbb | 8683 | |
a94dbf2c JM |
8684 | /* If we're not in the right context to be defining this type, defer to |
8685 | avoid tricky recursion. */ | |
8686 | if (TYPE_SIZE (type) && decl_scope_depth > 0 && scope_die == comp_unit_die) | |
8687 | { | |
8688 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
8689 | pend_type (type); | |
8690 | } | |
a3f97cbb JW |
8691 | /* If this type has been completed, then give it a byte_size attribute and |
8692 | then give a list of members. */ | |
a94dbf2c | 8693 | else if (TYPE_SIZE (type)) |
a3f97cbb JW |
8694 | { |
8695 | /* Prevent infinite recursion in cases where the type of some member of | |
8696 | this type is expressed in terms of this type itself. */ | |
8697 | TREE_ASM_WRITTEN (type) = 1; | |
273dbe67 | 8698 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 8699 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 8700 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 8701 | |
ef76d03b JW |
8702 | /* If the first reference to this type was as the return type of an |
8703 | inline function, then it may not have a parent. Fix this now. */ | |
8704 | if (type_die->die_parent == NULL) | |
8705 | add_child_die (scope_die, type_die); | |
8706 | ||
273dbe67 JM |
8707 | push_decl_scope (type); |
8708 | gen_member_die (type, type_die); | |
8709 | pop_decl_scope (); | |
71dfc51f | 8710 | |
a94dbf2c JM |
8711 | /* GNU extension: Record what type our vtable lives in. */ |
8712 | if (TYPE_VFIELD (type)) | |
8713 | { | |
8714 | tree vtype = DECL_FCONTEXT (TYPE_VFIELD (type)); | |
71dfc51f | 8715 | |
a94dbf2c JM |
8716 | gen_type_die (vtype, context_die); |
8717 | add_AT_die_ref (type_die, DW_AT_containing_type, | |
8718 | lookup_type_die (vtype)); | |
8719 | } | |
a3f97cbb | 8720 | } |
4b674448 JM |
8721 | else |
8722 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
8723 | } |
8724 | ||
8725 | /* Generate a DIE for a subroutine _type_. */ | |
71dfc51f | 8726 | |
a3f97cbb JW |
8727 | static void |
8728 | gen_subroutine_type_die (type, context_die) | |
8729 | register tree type; | |
8730 | register dw_die_ref context_die; | |
8731 | { | |
8732 | register tree return_type = TREE_TYPE (type); | |
71dfc51f RK |
8733 | register dw_die_ref subr_die |
8734 | = new_die (DW_TAG_subroutine_type, scope_die_for (type, context_die)); | |
8735 | ||
a3f97cbb JW |
8736 | equate_type_number_to_die (type, subr_die); |
8737 | add_prototyped_attribute (subr_die, type); | |
a3f97cbb | 8738 | add_type_attribute (subr_die, return_type, 0, 0, context_die); |
a94dbf2c | 8739 | gen_formal_types_die (type, subr_die); |
a3f97cbb JW |
8740 | } |
8741 | ||
8742 | /* Generate a DIE for a type definition */ | |
71dfc51f | 8743 | |
a3f97cbb JW |
8744 | static void |
8745 | gen_typedef_die (decl, context_die) | |
8746 | register tree decl; | |
8747 | register dw_die_ref context_die; | |
8748 | { | |
a3f97cbb | 8749 | register dw_die_ref type_die; |
a94dbf2c JM |
8750 | register tree origin; |
8751 | ||
8752 | if (TREE_ASM_WRITTEN (decl)) | |
8753 | return; | |
8754 | TREE_ASM_WRITTEN (decl) = 1; | |
8755 | ||
ab72d377 | 8756 | type_die = new_die (DW_TAG_typedef, scope_die_for (decl, context_die)); |
a94dbf2c | 8757 | origin = decl_ultimate_origin (decl); |
a3f97cbb | 8758 | if (origin != NULL) |
a94dbf2c | 8759 | add_abstract_origin_attribute (type_die, origin); |
a3f97cbb JW |
8760 | else |
8761 | { | |
a94dbf2c | 8762 | register tree type; |
a3f97cbb | 8763 | add_name_and_src_coords_attributes (type_die, decl); |
a94dbf2c JM |
8764 | if (DECL_ORIGINAL_TYPE (decl)) |
8765 | { | |
8766 | type = DECL_ORIGINAL_TYPE (decl); | |
8767 | equate_type_number_to_die (TREE_TYPE (decl), type_die); | |
8768 | } | |
8769 | else | |
8770 | type = TREE_TYPE (decl); | |
8771 | add_type_attribute (type_die, type, TREE_READONLY (decl), | |
8772 | TREE_THIS_VOLATILE (decl), context_die); | |
a3f97cbb | 8773 | } |
71dfc51f | 8774 | |
a3f97cbb | 8775 | if (DECL_ABSTRACT (decl)) |
a94dbf2c | 8776 | equate_decl_number_to_die (decl, type_die); |
a3f97cbb JW |
8777 | } |
8778 | ||
8779 | /* Generate a type description DIE. */ | |
71dfc51f | 8780 | |
a3f97cbb JW |
8781 | static void |
8782 | gen_type_die (type, context_die) | |
8783 | register tree type; | |
8784 | register dw_die_ref context_die; | |
8785 | { | |
71dfc51f RK |
8786 | if (type == NULL_TREE || type == error_mark_node) |
8787 | return; | |
a3f97cbb JW |
8788 | |
8789 | /* We are going to output a DIE to represent the unqualified version of of | |
8790 | this type (i.e. without any const or volatile qualifiers) so get the | |
8791 | main variant (i.e. the unqualified version) of this type now. */ | |
8792 | type = type_main_variant (type); | |
8793 | ||
8794 | if (TREE_ASM_WRITTEN (type)) | |
71dfc51f | 8795 | return; |
a3f97cbb | 8796 | |
a94dbf2c JM |
8797 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
8798 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
8799 | { | |
8800 | TREE_ASM_WRITTEN (type) = 1; | |
8801 | gen_decl_die (TYPE_NAME (type), context_die); | |
8802 | return; | |
8803 | } | |
8804 | ||
a3f97cbb JW |
8805 | switch (TREE_CODE (type)) |
8806 | { | |
8807 | case ERROR_MARK: | |
8808 | break; | |
8809 | ||
8810 | case POINTER_TYPE: | |
8811 | case REFERENCE_TYPE: | |
956d6950 JL |
8812 | /* We must set TREE_ASM_WRITTEN in case this is a recursive type. This |
8813 | ensures that the gen_type_die recursion will terminate even if the | |
8814 | type is recursive. Recursive types are possible in Ada. */ | |
8815 | /* ??? We could perhaps do this for all types before the switch | |
8816 | statement. */ | |
8817 | TREE_ASM_WRITTEN (type) = 1; | |
8818 | ||
a3f97cbb JW |
8819 | /* For these types, all that is required is that we output a DIE (or a |
8820 | set of DIEs) to represent the "basis" type. */ | |
8821 | gen_type_die (TREE_TYPE (type), context_die); | |
8822 | break; | |
8823 | ||
8824 | case OFFSET_TYPE: | |
71dfc51f RK |
8825 | /* This code is used for C++ pointer-to-data-member types. |
8826 | Output a description of the relevant class type. */ | |
a3f97cbb | 8827 | gen_type_die (TYPE_OFFSET_BASETYPE (type), context_die); |
71dfc51f | 8828 | |
a3f97cbb JW |
8829 | /* Output a description of the type of the object pointed to. */ |
8830 | gen_type_die (TREE_TYPE (type), context_die); | |
71dfc51f | 8831 | |
a3f97cbb JW |
8832 | /* Now output a DIE to represent this pointer-to-data-member type |
8833 | itself. */ | |
8834 | gen_ptr_to_mbr_type_die (type, context_die); | |
8835 | break; | |
8836 | ||
8837 | case SET_TYPE: | |
8838 | gen_type_die (TYPE_DOMAIN (type), context_die); | |
8839 | gen_set_type_die (type, context_die); | |
8840 | break; | |
8841 | ||
8842 | case FILE_TYPE: | |
8843 | gen_type_die (TREE_TYPE (type), context_die); | |
8844 | abort (); /* No way to represent these in Dwarf yet! */ | |
8845 | break; | |
8846 | ||
8847 | case FUNCTION_TYPE: | |
8848 | /* Force out return type (in case it wasn't forced out already). */ | |
8849 | gen_type_die (TREE_TYPE (type), context_die); | |
8850 | gen_subroutine_type_die (type, context_die); | |
8851 | break; | |
8852 | ||
8853 | case METHOD_TYPE: | |
8854 | /* Force out return type (in case it wasn't forced out already). */ | |
8855 | gen_type_die (TREE_TYPE (type), context_die); | |
8856 | gen_subroutine_type_die (type, context_die); | |
8857 | break; | |
8858 | ||
8859 | case ARRAY_TYPE: | |
8860 | if (TYPE_STRING_FLAG (type) && TREE_CODE (TREE_TYPE (type)) == CHAR_TYPE) | |
8861 | { | |
8862 | gen_type_die (TREE_TYPE (type), context_die); | |
8863 | gen_string_type_die (type, context_die); | |
8864 | } | |
8865 | else | |
71dfc51f | 8866 | gen_array_type_die (type, context_die); |
a3f97cbb JW |
8867 | break; |
8868 | ||
8869 | case ENUMERAL_TYPE: | |
8870 | case RECORD_TYPE: | |
8871 | case UNION_TYPE: | |
8872 | case QUAL_UNION_TYPE: | |
a082c85a JM |
8873 | /* If this is a nested type whose containing class hasn't been |
8874 | written out yet, writing it out will cover this one, too. */ | |
8875 | if (TYPE_CONTEXT (type) | |
8876 | && TREE_CODE_CLASS (TREE_CODE (TYPE_CONTEXT (type))) == 't' | |
8877 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) | |
a94dbf2c JM |
8878 | { |
8879 | gen_type_die (TYPE_CONTEXT (type), context_die); | |
8880 | ||
8881 | if (TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) | |
8882 | return; | |
8883 | ||
8884 | /* If that failed, attach ourselves to the stub. */ | |
8885 | push_decl_scope (TYPE_CONTEXT (type)); | |
8886 | context_die = lookup_type_die (TYPE_CONTEXT (type)); | |
8887 | } | |
8888 | ||
8889 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
273dbe67 | 8890 | gen_enumeration_type_die (type, context_die); |
a3f97cbb | 8891 | else |
273dbe67 | 8892 | gen_struct_or_union_type_die (type, context_die); |
4b674448 | 8893 | |
a94dbf2c JM |
8894 | if (TYPE_CONTEXT (type) |
8895 | && TREE_CODE_CLASS (TREE_CODE (TYPE_CONTEXT (type))) == 't' | |
8896 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) | |
8897 | pop_decl_scope (); | |
8898 | ||
4b674448 | 8899 | /* Don't set TREE_ASM_WRITTEN on an incomplete struct; we want to fix |
a082c85a JM |
8900 | it up if it is ever completed. gen_*_type_die will set it for us |
8901 | when appropriate. */ | |
8902 | return; | |
a3f97cbb JW |
8903 | |
8904 | case VOID_TYPE: | |
8905 | case INTEGER_TYPE: | |
8906 | case REAL_TYPE: | |
8907 | case COMPLEX_TYPE: | |
8908 | case BOOLEAN_TYPE: | |
8909 | case CHAR_TYPE: | |
8910 | /* No DIEs needed for fundamental types. */ | |
8911 | break; | |
8912 | ||
8913 | case LANG_TYPE: | |
8914 | /* No Dwarf representation currently defined. */ | |
8915 | break; | |
8916 | ||
8917 | default: | |
8918 | abort (); | |
8919 | } | |
8920 | ||
8921 | TREE_ASM_WRITTEN (type) = 1; | |
8922 | } | |
8923 | ||
8924 | /* Generate a DIE for a tagged type instantiation. */ | |
71dfc51f | 8925 | |
a3f97cbb JW |
8926 | static void |
8927 | gen_tagged_type_instantiation_die (type, context_die) | |
8928 | register tree type; | |
8929 | register dw_die_ref context_die; | |
8930 | { | |
71dfc51f RK |
8931 | if (type == NULL_TREE || type == error_mark_node) |
8932 | return; | |
a3f97cbb JW |
8933 | |
8934 | /* We are going to output a DIE to represent the unqualified version of of | |
8935 | this type (i.e. without any const or volatile qualifiers) so make sure | |
8936 | that we have the main variant (i.e. the unqualified version) of this | |
8937 | type now. */ | |
3a88cbd1 JL |
8938 | if (type != type_main_variant (type) |
8939 | || !TREE_ASM_WRITTEN (type)) | |
8940 | abort (); | |
a3f97cbb JW |
8941 | |
8942 | switch (TREE_CODE (type)) | |
8943 | { | |
8944 | case ERROR_MARK: | |
8945 | break; | |
8946 | ||
8947 | case ENUMERAL_TYPE: | |
8948 | gen_inlined_enumeration_type_die (type, context_die); | |
8949 | break; | |
8950 | ||
8951 | case RECORD_TYPE: | |
8952 | gen_inlined_structure_type_die (type, context_die); | |
8953 | break; | |
8954 | ||
8955 | case UNION_TYPE: | |
8956 | case QUAL_UNION_TYPE: | |
8957 | gen_inlined_union_type_die (type, context_die); | |
8958 | break; | |
8959 | ||
8960 | default: | |
71dfc51f | 8961 | abort (); |
a3f97cbb JW |
8962 | } |
8963 | } | |
8964 | ||
8965 | /* Generate a DW_TAG_lexical_block DIE followed by DIEs to represent all of the | |
8966 | things which are local to the given block. */ | |
71dfc51f | 8967 | |
a3f97cbb | 8968 | static void |
d7248bff | 8969 | gen_block_die (stmt, context_die, depth) |
a3f97cbb JW |
8970 | register tree stmt; |
8971 | register dw_die_ref context_die; | |
d7248bff | 8972 | int depth; |
a3f97cbb JW |
8973 | { |
8974 | register int must_output_die = 0; | |
8975 | register tree origin; | |
8976 | register tree decl; | |
8977 | register enum tree_code origin_code; | |
8978 | ||
8979 | /* Ignore blocks never really used to make RTL. */ | |
8980 | ||
71dfc51f RK |
8981 | if (stmt == NULL_TREE || !TREE_USED (stmt)) |
8982 | return; | |
a3f97cbb JW |
8983 | |
8984 | /* Determine the "ultimate origin" of this block. This block may be an | |
8985 | inlined instance of an inlined instance of inline function, so we have | |
8986 | to trace all of the way back through the origin chain to find out what | |
8987 | sort of node actually served as the original seed for the creation of | |
8988 | the current block. */ | |
8989 | origin = block_ultimate_origin (stmt); | |
8990 | origin_code = (origin != NULL) ? TREE_CODE (origin) : ERROR_MARK; | |
8991 | ||
8992 | /* Determine if we need to output any Dwarf DIEs at all to represent this | |
8993 | block. */ | |
8994 | if (origin_code == FUNCTION_DECL) | |
71dfc51f RK |
8995 | /* The outer scopes for inlinings *must* always be represented. We |
8996 | generate DW_TAG_inlined_subroutine DIEs for them. (See below.) */ | |
8997 | must_output_die = 1; | |
a3f97cbb JW |
8998 | else |
8999 | { | |
9000 | /* In the case where the current block represents an inlining of the | |
9001 | "body block" of an inline function, we must *NOT* output any DIE for | |
9002 | this block because we have already output a DIE to represent the | |
9003 | whole inlined function scope and the "body block" of any function | |
9004 | doesn't really represent a different scope according to ANSI C | |
9005 | rules. So we check here to make sure that this block does not | |
9006 | represent a "body block inlining" before trying to set the | |
9007 | `must_output_die' flag. */ | |
d7248bff | 9008 | if (! is_body_block (origin ? origin : stmt)) |
a3f97cbb JW |
9009 | { |
9010 | /* Determine if this block directly contains any "significant" | |
9011 | local declarations which we will need to output DIEs for. */ | |
9012 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
71dfc51f RK |
9013 | /* We are not in terse mode so *any* local declaration counts |
9014 | as being a "significant" one. */ | |
9015 | must_output_die = (BLOCK_VARS (stmt) != NULL); | |
a3f97cbb | 9016 | else |
71dfc51f RK |
9017 | /* We are in terse mode, so only local (nested) function |
9018 | definitions count as "significant" local declarations. */ | |
9019 | for (decl = BLOCK_VARS (stmt); | |
9020 | decl != NULL; decl = TREE_CHAIN (decl)) | |
9021 | if (TREE_CODE (decl) == FUNCTION_DECL | |
9022 | && DECL_INITIAL (decl)) | |
a3f97cbb | 9023 | { |
71dfc51f RK |
9024 | must_output_die = 1; |
9025 | break; | |
a3f97cbb | 9026 | } |
a3f97cbb JW |
9027 | } |
9028 | } | |
9029 | ||
9030 | /* It would be a waste of space to generate a Dwarf DW_TAG_lexical_block | |
9031 | DIE for any block which contains no significant local declarations at | |
9032 | all. Rather, in such cases we just call `decls_for_scope' so that any | |
9033 | needed Dwarf info for any sub-blocks will get properly generated. Note | |
9034 | that in terse mode, our definition of what constitutes a "significant" | |
9035 | local declaration gets restricted to include only inlined function | |
9036 | instances and local (nested) function definitions. */ | |
9037 | if (must_output_die) | |
9038 | { | |
9039 | if (origin_code == FUNCTION_DECL) | |
71dfc51f | 9040 | gen_inlined_subroutine_die (stmt, context_die, depth); |
a3f97cbb | 9041 | else |
71dfc51f | 9042 | gen_lexical_block_die (stmt, context_die, depth); |
a3f97cbb JW |
9043 | } |
9044 | else | |
d7248bff | 9045 | decls_for_scope (stmt, context_die, depth); |
a3f97cbb JW |
9046 | } |
9047 | ||
9048 | /* Generate all of the decls declared within a given scope and (recursively) | |
9049 | all of it's sub-blocks. */ | |
71dfc51f | 9050 | |
a3f97cbb | 9051 | static void |
d7248bff | 9052 | decls_for_scope (stmt, context_die, depth) |
a3f97cbb JW |
9053 | register tree stmt; |
9054 | register dw_die_ref context_die; | |
d7248bff | 9055 | int depth; |
a3f97cbb JW |
9056 | { |
9057 | register tree decl; | |
9058 | register tree subblocks; | |
71dfc51f | 9059 | |
a3f97cbb | 9060 | /* Ignore blocks never really used to make RTL. */ |
71dfc51f RK |
9061 | if (stmt == NULL_TREE || ! TREE_USED (stmt)) |
9062 | return; | |
9063 | ||
d7248bff | 9064 | if (!BLOCK_ABSTRACT (stmt) && depth > 0) |
71dfc51f | 9065 | next_block_number++; |
a3f97cbb | 9066 | |
88dad228 JM |
9067 | /* Output the DIEs to represent all of the data objects and typedefs |
9068 | declared directly within this block but not within any nested | |
9069 | sub-blocks. Also, nested function and tag DIEs have been | |
9070 | generated with a parent of NULL; fix that up now. */ | |
a3f97cbb JW |
9071 | for (decl = BLOCK_VARS (stmt); |
9072 | decl != NULL; decl = TREE_CHAIN (decl)) | |
9073 | { | |
a94dbf2c JM |
9074 | register dw_die_ref die; |
9075 | ||
88dad228 | 9076 | if (TREE_CODE (decl) == FUNCTION_DECL) |
a94dbf2c | 9077 | die = lookup_decl_die (decl); |
88dad228 | 9078 | else if (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl)) |
a94dbf2c JM |
9079 | die = lookup_type_die (TREE_TYPE (decl)); |
9080 | else | |
9081 | die = NULL; | |
9082 | ||
71dfc51f | 9083 | if (die != NULL && die->die_parent == NULL) |
ef76d03b | 9084 | add_child_die (context_die, die); |
88dad228 JM |
9085 | else |
9086 | gen_decl_die (decl, context_die); | |
a3f97cbb JW |
9087 | } |
9088 | ||
9089 | /* Output the DIEs to represent all sub-blocks (and the items declared | |
9090 | therein) of this block. */ | |
9091 | for (subblocks = BLOCK_SUBBLOCKS (stmt); | |
9092 | subblocks != NULL; | |
9093 | subblocks = BLOCK_CHAIN (subblocks)) | |
71dfc51f | 9094 | gen_block_die (subblocks, context_die, depth + 1); |
a3f97cbb JW |
9095 | } |
9096 | ||
a94dbf2c | 9097 | /* Is this a typedef we can avoid emitting? */ |
71dfc51f RK |
9098 | |
9099 | static inline int | |
a94dbf2c JM |
9100 | is_redundant_typedef (decl) |
9101 | register tree decl; | |
9102 | { | |
9103 | if (TYPE_DECL_IS_STUB (decl)) | |
9104 | return 1; | |
71dfc51f | 9105 | |
a94dbf2c JM |
9106 | if (DECL_ARTIFICIAL (decl) |
9107 | && DECL_CONTEXT (decl) | |
9108 | && is_tagged_type (DECL_CONTEXT (decl)) | |
9109 | && TREE_CODE (TYPE_NAME (DECL_CONTEXT (decl))) == TYPE_DECL | |
9110 | && DECL_NAME (decl) == DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))) | |
9111 | /* Also ignore the artificial member typedef for the class name. */ | |
9112 | return 1; | |
71dfc51f | 9113 | |
a94dbf2c JM |
9114 | return 0; |
9115 | } | |
9116 | ||
a3f97cbb | 9117 | /* Generate Dwarf debug information for a decl described by DECL. */ |
71dfc51f | 9118 | |
a3f97cbb JW |
9119 | static void |
9120 | gen_decl_die (decl, context_die) | |
9121 | register tree decl; | |
9122 | register dw_die_ref context_die; | |
9123 | { | |
9124 | register tree origin; | |
71dfc51f | 9125 | |
a3f97cbb JW |
9126 | /* Make a note of the decl node we are going to be working on. We may need |
9127 | to give the user the source coordinates of where it appeared in case we | |
9128 | notice (later on) that something about it looks screwy. */ | |
9129 | dwarf_last_decl = decl; | |
9130 | ||
9131 | if (TREE_CODE (decl) == ERROR_MARK) | |
71dfc51f | 9132 | return; |
a3f97cbb JW |
9133 | |
9134 | /* If this ..._DECL node is marked to be ignored, then ignore it. But don't | |
9135 | ignore a function definition, since that would screw up our count of | |
9136 | blocks, and that it turn will completely screw up the the labels we will | |
9137 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for | |
9138 | subsequent blocks). */ | |
9139 | if (DECL_IGNORED_P (decl) && TREE_CODE (decl) != FUNCTION_DECL) | |
71dfc51f | 9140 | return; |
a3f97cbb | 9141 | |
a3f97cbb JW |
9142 | switch (TREE_CODE (decl)) |
9143 | { | |
9144 | case CONST_DECL: | |
9145 | /* The individual enumerators of an enum type get output when we output | |
9146 | the Dwarf representation of the relevant enum type itself. */ | |
9147 | break; | |
9148 | ||
9149 | case FUNCTION_DECL: | |
4edb7b60 JM |
9150 | /* Don't output any DIEs to represent mere function declarations, |
9151 | unless they are class members or explicit block externs. */ | |
9152 | if (DECL_INITIAL (decl) == NULL_TREE && DECL_CONTEXT (decl) == NULL_TREE | |
9153 | && (current_function_decl == NULL_TREE || ! DECL_ARTIFICIAL (decl))) | |
71dfc51f | 9154 | break; |
bdb669cb | 9155 | |
4927276d | 9156 | if (debug_info_level > DINFO_LEVEL_TERSE) |
a94dbf2c JM |
9157 | { |
9158 | /* Before we describe the FUNCTION_DECL itself, make sure that we | |
9159 | have described its return type. */ | |
9160 | gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die); | |
9161 | ||
9162 | /* And its containing type. */ | |
9163 | origin = decl_class_context (decl); | |
71dfc51f | 9164 | if (origin != NULL_TREE) |
a94dbf2c JM |
9165 | gen_type_die (origin, context_die); |
9166 | ||
9167 | /* And its virtual context. */ | |
71dfc51f | 9168 | if (DECL_VINDEX (decl) != NULL_TREE) |
a94dbf2c JM |
9169 | gen_type_die (DECL_CONTEXT (decl), context_die); |
9170 | } | |
a3f97cbb JW |
9171 | |
9172 | /* Now output a DIE to represent the function itself. */ | |
9173 | gen_subprogram_die (decl, context_die); | |
9174 | break; | |
9175 | ||
9176 | case TYPE_DECL: | |
9177 | /* If we are in terse mode, don't generate any DIEs to represent any | |
4927276d | 9178 | actual typedefs. */ |
a3f97cbb | 9179 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 9180 | break; |
a3f97cbb | 9181 | |
5c90448c JM |
9182 | /* In the special case of a TYPE_DECL node representing the |
9183 | declaration of some type tag, if the given TYPE_DECL is marked as | |
a3f97cbb JW |
9184 | having been instantiated from some other (original) TYPE_DECL node |
9185 | (e.g. one which was generated within the original definition of an | |
9186 | inline function) we have to generate a special (abbreviated) | |
ef76d03b | 9187 | DW_TAG_structure_type, DW_TAG_union_type, or DW_TAG_enumeration_type |
a3f97cbb | 9188 | DIE here. */ |
71dfc51f | 9189 | if (TYPE_DECL_IS_STUB (decl) && DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE) |
a3f97cbb JW |
9190 | { |
9191 | gen_tagged_type_instantiation_die (TREE_TYPE (decl), context_die); | |
9192 | break; | |
9193 | } | |
a3f97cbb | 9194 | |
a94dbf2c JM |
9195 | if (is_redundant_typedef (decl)) |
9196 | gen_type_die (TREE_TYPE (decl), context_die); | |
9197 | else | |
71dfc51f RK |
9198 | /* Output a DIE to represent the typedef itself. */ |
9199 | gen_typedef_die (decl, context_die); | |
a3f97cbb JW |
9200 | break; |
9201 | ||
9202 | case LABEL_DECL: | |
9203 | if (debug_info_level >= DINFO_LEVEL_NORMAL) | |
71dfc51f | 9204 | gen_label_die (decl, context_die); |
a3f97cbb JW |
9205 | break; |
9206 | ||
9207 | case VAR_DECL: | |
9208 | /* If we are in terse mode, don't generate any DIEs to represent any | |
9209 | variable declarations or definitions. */ | |
9210 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 9211 | break; |
a3f97cbb JW |
9212 | |
9213 | /* Output any DIEs that are needed to specify the type of this data | |
9214 | object. */ | |
9215 | gen_type_die (TREE_TYPE (decl), context_die); | |
9216 | ||
a94dbf2c JM |
9217 | /* And its containing type. */ |
9218 | origin = decl_class_context (decl); | |
71dfc51f | 9219 | if (origin != NULL_TREE) |
a94dbf2c JM |
9220 | gen_type_die (origin, context_die); |
9221 | ||
a3f97cbb JW |
9222 | /* Now output the DIE to represent the data object itself. This gets |
9223 | complicated because of the possibility that the VAR_DECL really | |
9224 | represents an inlined instance of a formal parameter for an inline | |
9225 | function. */ | |
9226 | origin = decl_ultimate_origin (decl); | |
71dfc51f RK |
9227 | if (origin != NULL_TREE && TREE_CODE (origin) == PARM_DECL) |
9228 | gen_formal_parameter_die (decl, context_die); | |
a3f97cbb | 9229 | else |
71dfc51f | 9230 | gen_variable_die (decl, context_die); |
a3f97cbb JW |
9231 | break; |
9232 | ||
9233 | case FIELD_DECL: | |
a94dbf2c JM |
9234 | /* Ignore the nameless fields that are used to skip bits, but |
9235 | handle C++ anonymous unions. */ | |
71dfc51f RK |
9236 | if (DECL_NAME (decl) != NULL_TREE |
9237 | || TREE_CODE (TREE_TYPE (decl)) == UNION_TYPE) | |
a3f97cbb JW |
9238 | { |
9239 | gen_type_die (member_declared_type (decl), context_die); | |
9240 | gen_field_die (decl, context_die); | |
9241 | } | |
9242 | break; | |
9243 | ||
9244 | case PARM_DECL: | |
9245 | gen_type_die (TREE_TYPE (decl), context_die); | |
9246 | gen_formal_parameter_die (decl, context_die); | |
9247 | break; | |
9248 | ||
9249 | default: | |
9250 | abort (); | |
9251 | } | |
a3f97cbb JW |
9252 | } |
9253 | \f | |
71dfc51f RK |
9254 | /* Write the debugging output for DECL. */ |
9255 | ||
a3f97cbb | 9256 | void |
88dad228 | 9257 | dwarf2out_decl (decl) |
a3f97cbb | 9258 | register tree decl; |
a3f97cbb | 9259 | { |
88dad228 JM |
9260 | register dw_die_ref context_die = comp_unit_die; |
9261 | ||
a3f97cbb | 9262 | if (TREE_CODE (decl) == ERROR_MARK) |
71dfc51f | 9263 | return; |
a3f97cbb JW |
9264 | |
9265 | /* If this ..._DECL node is marked to be ignored, then ignore it. We gotta | |
9266 | hope that the node in question doesn't represent a function definition. | |
9267 | If it does, then totally ignoring it is bound to screw up our count of | |
9268 | blocks, and that it turn will completely screw up the the labels we will | |
9269 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for | |
9270 | subsequent blocks). (It's too bad that BLOCK nodes don't carry their | |
9271 | own sequence numbers with them!) */ | |
9272 | if (DECL_IGNORED_P (decl)) | |
9273 | { | |
9274 | if (TREE_CODE (decl) == FUNCTION_DECL | |
9275 | && DECL_INITIAL (decl) != NULL) | |
71dfc51f RK |
9276 | abort (); |
9277 | ||
a3f97cbb JW |
9278 | return; |
9279 | } | |
9280 | ||
9281 | switch (TREE_CODE (decl)) | |
9282 | { | |
9283 | case FUNCTION_DECL: | |
9284 | /* Ignore this FUNCTION_DECL if it refers to a builtin declaration of a | |
9285 | builtin function. Explicit programmer-supplied declarations of | |
9286 | these same functions should NOT be ignored however. */ | |
9287 | if (DECL_EXTERNAL (decl) && DECL_FUNCTION_CODE (decl)) | |
b1ccbc24 | 9288 | return; |
a3f97cbb JW |
9289 | |
9290 | /* What we would really like to do here is to filter out all mere | |
9291 | file-scope declarations of file-scope functions which are never | |
9292 | referenced later within this translation unit (and keep all of ones | |
956d6950 | 9293 | that *are* referenced later on) but we aren't clairvoyant, so we have |
a3f97cbb JW |
9294 | no idea which functions will be referenced in the future (i.e. later |
9295 | on within the current translation unit). So here we just ignore all | |
9296 | file-scope function declarations which are not also definitions. If | |
956d6950 | 9297 | and when the debugger needs to know something about these functions, |
a3f97cbb JW |
9298 | it wil have to hunt around and find the DWARF information associated |
9299 | with the definition of the function. Note that we can't just check | |
9300 | `DECL_EXTERNAL' to find out which FUNCTION_DECL nodes represent | |
9301 | definitions and which ones represent mere declarations. We have to | |
9302 | check `DECL_INITIAL' instead. That's because the C front-end | |
9303 | supports some weird semantics for "extern inline" function | |
9304 | definitions. These can get inlined within the current translation | |
9305 | unit (an thus, we need to generate DWARF info for their abstract | |
9306 | instances so that the DWARF info for the concrete inlined instances | |
9307 | can have something to refer to) but the compiler never generates any | |
9308 | out-of-lines instances of such things (despite the fact that they | |
9309 | *are* definitions). The important point is that the C front-end | |
9310 | marks these "extern inline" functions as DECL_EXTERNAL, but we need | |
273dbe67 | 9311 | to generate DWARF for them anyway. Note that the C++ front-end also |
a3f97cbb JW |
9312 | plays some similar games for inline function definitions appearing |
9313 | within include files which also contain | |
9314 | `#pragma interface' pragmas. */ | |
9315 | if (DECL_INITIAL (decl) == NULL_TREE) | |
b1ccbc24 | 9316 | return; |
88dad228 | 9317 | |
9c6cd30e JM |
9318 | /* If we're a nested function, initially use a parent of NULL; if we're |
9319 | a plain function, this will be fixed up in decls_for_scope. If | |
9320 | we're a method, it will be ignored, since we already have a DIE. */ | |
88dad228 | 9321 | if (decl_function_context (decl)) |
9c6cd30e | 9322 | context_die = NULL; |
88dad228 | 9323 | |
a3f97cbb JW |
9324 | break; |
9325 | ||
9326 | case VAR_DECL: | |
9327 | /* Ignore this VAR_DECL if it refers to a file-scope extern data object | |
9328 | declaration and if the declaration was never even referenced from | |
9329 | within this entire compilation unit. We suppress these DIEs in | |
9330 | order to save space in the .debug section (by eliminating entries | |
9331 | which are probably useless). Note that we must not suppress | |
9332 | block-local extern declarations (whether used or not) because that | |
9333 | would screw-up the debugger's name lookup mechanism and cause it to | |
9334 | miss things which really ought to be in scope at a given point. */ | |
9335 | if (DECL_EXTERNAL (decl) && !TREE_USED (decl)) | |
71dfc51f | 9336 | return; |
a3f97cbb JW |
9337 | |
9338 | /* If we are in terse mode, don't generate any DIEs to represent any | |
9339 | variable declarations or definitions. */ | |
9340 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 9341 | return; |
a3f97cbb JW |
9342 | break; |
9343 | ||
9344 | case TYPE_DECL: | |
9345 | /* Don't bother trying to generate any DIEs to represent any of the | |
a9d38797 JM |
9346 | normal built-in types for the language we are compiling. */ |
9347 | if (DECL_SOURCE_LINE (decl) == 0) | |
a94dbf2c JM |
9348 | { |
9349 | /* OK, we need to generate one for `bool' so GDB knows what type | |
9350 | comparisons have. */ | |
9351 | if ((get_AT_unsigned (comp_unit_die, DW_AT_language) | |
9352 | == DW_LANG_C_plus_plus) | |
9353 | && TREE_CODE (TREE_TYPE (decl)) == BOOLEAN_TYPE) | |
9354 | modified_type_die (TREE_TYPE (decl), 0, 0, NULL); | |
71dfc51f | 9355 | |
a94dbf2c JM |
9356 | return; |
9357 | } | |
a3f97cbb | 9358 | |
88dad228 | 9359 | /* If we are in terse mode, don't generate any DIEs for types. */ |
a3f97cbb | 9360 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 9361 | return; |
88dad228 JM |
9362 | |
9363 | /* If we're a function-scope tag, initially use a parent of NULL; | |
9364 | this will be fixed up in decls_for_scope. */ | |
9365 | if (decl_function_context (decl)) | |
3f76745e | 9366 | context_die = NULL; |
88dad228 | 9367 | |
a3f97cbb JW |
9368 | break; |
9369 | ||
9370 | default: | |
9371 | return; | |
9372 | } | |
9373 | ||
88dad228 | 9374 | gen_decl_die (decl, context_die); |
a94dbf2c | 9375 | output_pending_types_for_scope (comp_unit_die); |
a3f97cbb JW |
9376 | } |
9377 | ||
9378 | /* Output a marker (i.e. a label) for the beginning of the generated code for | |
9379 | a lexical block. */ | |
71dfc51f | 9380 | |
a3f97cbb | 9381 | void |
9a666dda | 9382 | dwarf2out_begin_block (blocknum) |
a3f97cbb JW |
9383 | register unsigned blocknum; |
9384 | { | |
a3f97cbb | 9385 | function_section (current_function_decl); |
5c90448c | 9386 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum); |
a3f97cbb JW |
9387 | } |
9388 | ||
9389 | /* Output a marker (i.e. a label) for the end of the generated code for a | |
9390 | lexical block. */ | |
71dfc51f | 9391 | |
a3f97cbb | 9392 | void |
9a666dda | 9393 | dwarf2out_end_block (blocknum) |
a3f97cbb JW |
9394 | register unsigned blocknum; |
9395 | { | |
a3f97cbb | 9396 | function_section (current_function_decl); |
5c90448c | 9397 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum); |
a3f97cbb JW |
9398 | } |
9399 | ||
9400 | /* Output a marker (i.e. a label) at a point in the assembly code which | |
9401 | corresponds to a given source level label. */ | |
71dfc51f | 9402 | |
a3f97cbb | 9403 | void |
9a666dda | 9404 | dwarf2out_label (insn) |
a3f97cbb JW |
9405 | register rtx insn; |
9406 | { | |
9407 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f | 9408 | |
a3f97cbb JW |
9409 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
9410 | { | |
9411 | function_section (current_function_decl); | |
5c90448c JM |
9412 | sprintf (label, INSN_LABEL_FMT, current_funcdef_number); |
9413 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, label, | |
9414 | (unsigned) INSN_UID (insn)); | |
a3f97cbb JW |
9415 | } |
9416 | } | |
9417 | ||
a3f97cbb | 9418 | /* Lookup a filename (in the list of filenames that we know about here in |
9a666dda | 9419 | dwarf2out.c) and return its "index". The index of each (known) filename is |
a3f97cbb JW |
9420 | just a unique number which is associated with only that one filename. |
9421 | We need such numbers for the sake of generating labels | |
9422 | (in the .debug_sfnames section) and references to those | |
9423 | files numbers (in the .debug_srcinfo and.debug_macinfo sections). | |
9424 | If the filename given as an argument is not found in our current list, | |
9425 | add it to the list and assign it the next available unique index number. | |
9426 | In order to speed up searches, we remember the index of the filename | |
9427 | was looked up last. This handles the majority of all searches. */ | |
71dfc51f | 9428 | |
a3f97cbb JW |
9429 | static unsigned |
9430 | lookup_filename (file_name) | |
9431 | char *file_name; | |
9432 | { | |
9433 | static unsigned last_file_lookup_index = 0; | |
a3f97cbb JW |
9434 | register unsigned i; |
9435 | ||
9436 | /* Check to see if the file name that was searched on the previous call | |
9437 | matches this file name. If so, return the index. */ | |
9438 | if (last_file_lookup_index != 0) | |
71dfc51f RK |
9439 | if (strcmp (file_name, file_table[last_file_lookup_index]) == 0) |
9440 | return last_file_lookup_index; | |
a3f97cbb JW |
9441 | |
9442 | /* Didn't match the previous lookup, search the table */ | |
9443 | for (i = 1; i < file_table_in_use; ++i) | |
71dfc51f RK |
9444 | if (strcmp (file_name, file_table[i]) == 0) |
9445 | { | |
9446 | last_file_lookup_index = i; | |
9447 | return i; | |
9448 | } | |
a3f97cbb JW |
9449 | |
9450 | /* Prepare to add a new table entry by making sure there is enough space in | |
9451 | the table to do so. If not, expand the current table. */ | |
9452 | if (file_table_in_use == file_table_allocated) | |
9453 | { | |
9454 | file_table_allocated += FILE_TABLE_INCREMENT; | |
9455 | file_table | |
71dfc51f RK |
9456 | = (char **) xrealloc (file_table, |
9457 | file_table_allocated * sizeof (char *)); | |
a3f97cbb JW |
9458 | } |
9459 | ||
71dfc51f | 9460 | /* Add the new entry to the end of the filename table. */ |
a3f97cbb JW |
9461 | file_table[file_table_in_use] = xstrdup (file_name); |
9462 | last_file_lookup_index = file_table_in_use++; | |
71dfc51f | 9463 | |
a3f97cbb JW |
9464 | return last_file_lookup_index; |
9465 | } | |
9466 | ||
9467 | /* Output a label to mark the beginning of a source code line entry | |
9468 | and record information relating to this source line, in | |
9469 | 'line_info_table' for later output of the .debug_line section. */ | |
71dfc51f | 9470 | |
a3f97cbb | 9471 | void |
9a666dda | 9472 | dwarf2out_line (filename, line) |
a3f97cbb JW |
9473 | register char *filename; |
9474 | register unsigned line; | |
9475 | { | |
a3f97cbb JW |
9476 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
9477 | { | |
9478 | function_section (current_function_decl); | |
a3f97cbb | 9479 | |
e90b62db | 9480 | if (DECL_SECTION_NAME (current_function_decl)) |
a3f97cbb | 9481 | { |
e90b62db | 9482 | register dw_separate_line_info_ref line_info; |
5c90448c JM |
9483 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, SEPARATE_LINE_CODE_LABEL, |
9484 | separate_line_info_table_in_use); | |
e90b62db JM |
9485 | fputc ('\n', asm_out_file); |
9486 | ||
9487 | /* expand the line info table if necessary */ | |
9488 | if (separate_line_info_table_in_use | |
9489 | == separate_line_info_table_allocated) | |
9490 | { | |
9491 | separate_line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
9492 | separate_line_info_table | |
71dfc51f RK |
9493 | = (dw_separate_line_info_ref) |
9494 | xrealloc (separate_line_info_table, | |
9495 | separate_line_info_table_allocated | |
9496 | * sizeof (dw_separate_line_info_entry)); | |
e90b62db | 9497 | } |
71dfc51f RK |
9498 | |
9499 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
9500 | line_info |
9501 | = &separate_line_info_table[separate_line_info_table_in_use++]; | |
9502 | line_info->dw_file_num = lookup_filename (filename); | |
9503 | line_info->dw_line_num = line; | |
9504 | line_info->function = current_funcdef_number; | |
9505 | } | |
9506 | else | |
9507 | { | |
9508 | register dw_line_info_ref line_info; | |
71dfc51f | 9509 | |
5c90448c JM |
9510 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, LINE_CODE_LABEL, |
9511 | line_info_table_in_use); | |
e90b62db JM |
9512 | fputc ('\n', asm_out_file); |
9513 | ||
71dfc51f | 9514 | /* Expand the line info table if necessary. */ |
e90b62db JM |
9515 | if (line_info_table_in_use == line_info_table_allocated) |
9516 | { | |
9517 | line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
9518 | line_info_table | |
71dfc51f RK |
9519 | = (dw_line_info_ref) |
9520 | xrealloc (line_info_table, | |
9521 | (line_info_table_allocated | |
9522 | * sizeof (dw_line_info_entry))); | |
e90b62db | 9523 | } |
71dfc51f RK |
9524 | |
9525 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
9526 | line_info = &line_info_table[line_info_table_in_use++]; |
9527 | line_info->dw_file_num = lookup_filename (filename); | |
9528 | line_info->dw_line_num = line; | |
a3f97cbb | 9529 | } |
a3f97cbb JW |
9530 | } |
9531 | } | |
9532 | ||
9533 | /* Record the beginning of a new source file, for later output | |
9534 | of the .debug_macinfo section. At present, unimplemented. */ | |
71dfc51f | 9535 | |
a3f97cbb | 9536 | void |
9a666dda | 9537 | dwarf2out_start_source_file (filename) |
a3f97cbb JW |
9538 | register char *filename; |
9539 | { | |
9540 | } | |
9541 | ||
9a666dda | 9542 | /* Record the end of a source file, for later output |
a3f97cbb | 9543 | of the .debug_macinfo section. At present, unimplemented. */ |
71dfc51f | 9544 | |
a3f97cbb | 9545 | void |
9a666dda | 9546 | dwarf2out_end_source_file () |
a3f97cbb JW |
9547 | { |
9548 | } | |
9549 | ||
9550 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
9551 | the tail part of the directive line, i.e. the part which is past the | |
9552 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 9553 | |
a3f97cbb | 9554 | void |
9a666dda | 9555 | dwarf2out_define (lineno, buffer) |
a3f97cbb JW |
9556 | register unsigned lineno; |
9557 | register char *buffer; | |
9558 | { | |
9559 | static int initialized = 0; | |
9560 | if (!initialized) | |
9561 | { | |
9a666dda | 9562 | dwarf2out_start_source_file (primary_filename); |
a3f97cbb JW |
9563 | initialized = 1; |
9564 | } | |
9565 | } | |
9566 | ||
9567 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
9568 | the tail part of the directive line, i.e. the part which is past the | |
9569 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 9570 | |
a3f97cbb | 9571 | void |
9a666dda | 9572 | dwarf2out_undef (lineno, buffer) |
a3f97cbb JW |
9573 | register unsigned lineno; |
9574 | register char *buffer; | |
9575 | { | |
9576 | } | |
9577 | ||
9578 | /* Set up for Dwarf output at the start of compilation. */ | |
71dfc51f | 9579 | |
a3f97cbb | 9580 | void |
9a666dda | 9581 | dwarf2out_init (asm_out_file, main_input_filename) |
a3f97cbb JW |
9582 | register FILE *asm_out_file; |
9583 | register char *main_input_filename; | |
9584 | { | |
a3f97cbb JW |
9585 | /* Remember the name of the primary input file. */ |
9586 | primary_filename = main_input_filename; | |
9587 | ||
9588 | /* Allocate the initial hunk of the file_table. */ | |
9589 | file_table = (char **) xmalloc (FILE_TABLE_INCREMENT * sizeof (char *)); | |
b1ccbc24 | 9590 | bzero ((char *) file_table, FILE_TABLE_INCREMENT * sizeof (char *)); |
a3f97cbb | 9591 | file_table_allocated = FILE_TABLE_INCREMENT; |
71dfc51f RK |
9592 | |
9593 | /* Skip the first entry - file numbers begin at 1. */ | |
a3f97cbb JW |
9594 | file_table_in_use = 1; |
9595 | ||
a3f97cbb JW |
9596 | /* Allocate the initial hunk of the decl_die_table. */ |
9597 | decl_die_table | |
9598 | = (dw_die_ref *) xmalloc (DECL_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
b1ccbc24 RK |
9599 | bzero ((char *) decl_die_table, |
9600 | DECL_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
a3f97cbb JW |
9601 | decl_die_table_allocated = DECL_DIE_TABLE_INCREMENT; |
9602 | decl_die_table_in_use = 0; | |
9603 | ||
9604 | /* Allocate the initial hunk of the decl_scope_table. */ | |
9605 | decl_scope_table | |
9606 | = (tree *) xmalloc (DECL_SCOPE_TABLE_INCREMENT * sizeof (tree)); | |
b1ccbc24 RK |
9607 | bzero ((char *) decl_scope_table, |
9608 | DECL_SCOPE_TABLE_INCREMENT * sizeof (tree)); | |
a3f97cbb JW |
9609 | decl_scope_table_allocated = DECL_SCOPE_TABLE_INCREMENT; |
9610 | decl_scope_depth = 0; | |
9611 | ||
9612 | /* Allocate the initial hunk of the abbrev_die_table. */ | |
9613 | abbrev_die_table | |
9614 | = (dw_die_ref *) xmalloc (ABBREV_DIE_TABLE_INCREMENT | |
9615 | * sizeof (dw_die_ref)); | |
b1ccbc24 RK |
9616 | bzero ((char *) abbrev_die_table, |
9617 | ABBREV_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
a3f97cbb | 9618 | abbrev_die_table_allocated = ABBREV_DIE_TABLE_INCREMENT; |
71dfc51f | 9619 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
9620 | abbrev_die_table_in_use = 1; |
9621 | ||
9622 | /* Allocate the initial hunk of the line_info_table. */ | |
9623 | line_info_table | |
9624 | = (dw_line_info_ref) xmalloc (LINE_INFO_TABLE_INCREMENT | |
9625 | * sizeof (dw_line_info_entry)); | |
b1ccbc24 RK |
9626 | bzero ((char *) line_info_table, |
9627 | LINE_INFO_TABLE_INCREMENT * sizeof (dw_line_info_entry)); | |
a3f97cbb | 9628 | line_info_table_allocated = LINE_INFO_TABLE_INCREMENT; |
71dfc51f | 9629 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
9630 | line_info_table_in_use = 1; |
9631 | ||
a3f97cbb JW |
9632 | /* Generate the initial DIE for the .debug section. Note that the (string) |
9633 | value given in the DW_AT_name attribute of the DW_TAG_compile_unit DIE | |
9634 | will (typically) be a relative pathname and that this pathname should be | |
9635 | taken as being relative to the directory from which the compiler was | |
9636 | invoked when the given (base) source file was compiled. */ | |
9637 | gen_compile_unit_die (main_input_filename); | |
9638 | ||
5c90448c | 9639 | ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0); |
a3f97cbb JW |
9640 | } |
9641 | ||
9642 | /* Output stuff that dwarf requires at the end of every file, | |
9643 | and generate the DWARF-2 debugging info. */ | |
71dfc51f | 9644 | |
a3f97cbb | 9645 | void |
9a666dda | 9646 | dwarf2out_finish () |
a3f97cbb | 9647 | { |
ef76d03b JW |
9648 | limbo_die_node *node, *next_node; |
9649 | dw_die_ref die; | |
9650 | dw_attr_ref a; | |
9651 | ||
9652 | /* Traverse the limbo die list, and add parent/child links. The only | |
9653 | dies without parents that should be here are concrete instances of | |
9654 | inline functions, and the comp_unit_die. We can ignore the comp_unit_die. | |
9655 | For concrete instances, we can get the parent die from the abstract | |
9656 | instance. */ | |
9657 | for (node = limbo_die_list; node; node = next_node) | |
9658 | { | |
9659 | next_node = node->next; | |
9660 | die = node->die; | |
9661 | ||
9662 | if (die->die_parent == NULL) | |
9663 | { | |
9664 | a = get_AT (die, DW_AT_abstract_origin); | |
9665 | if (a) | |
9666 | add_child_die (a->dw_attr_val.v.val_die_ref->die_parent, die); | |
9667 | else if (die == comp_unit_die) | |
9668 | ; | |
9669 | else | |
9670 | abort (); | |
9671 | } | |
9672 | free (node); | |
9673 | } | |
9674 | ||
a3f97cbb JW |
9675 | /* Traverse the DIE tree and add sibling attributes to those DIE's |
9676 | that have children. */ | |
9677 | add_sibling_attributes (comp_unit_die); | |
9678 | ||
9679 | /* Output a terminator label for the .text section. */ | |
9680 | fputc ('\n', asm_out_file); | |
9681 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
5c90448c | 9682 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, TEXT_END_LABEL, 0); |
a3f97cbb | 9683 | |
bdb669cb | 9684 | #if 0 |
a3f97cbb JW |
9685 | /* Output a terminator label for the .data section. */ |
9686 | fputc ('\n', asm_out_file); | |
9687 | ASM_OUTPUT_SECTION (asm_out_file, DATA_SECTION); | |
5c90448c | 9688 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, DATA_END_LABEL, 0); |
a3f97cbb JW |
9689 | |
9690 | /* Output a terminator label for the .bss section. */ | |
9691 | fputc ('\n', asm_out_file); | |
9692 | ASM_OUTPUT_SECTION (asm_out_file, BSS_SECTION); | |
5c90448c | 9693 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BSS_END_LABEL, 0); |
bdb669cb | 9694 | #endif |
a3f97cbb | 9695 | |
e90b62db JM |
9696 | /* Output the source line correspondence table. */ |
9697 | if (line_info_table_in_use > 1 || separate_line_info_table_in_use) | |
9698 | { | |
9699 | fputc ('\n', asm_out_file); | |
c53aa195 | 9700 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION); |
e90b62db JM |
9701 | output_line_info (); |
9702 | ||
9703 | /* We can only use the low/high_pc attributes if all of the code | |
9704 | was in .text. */ | |
9705 | if (separate_line_info_table_in_use == 0) | |
9706 | { | |
9707 | add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, TEXT_SECTION); | |
5c90448c | 9708 | add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label); |
e90b62db | 9709 | } |
71dfc51f | 9710 | |
c53aa195 | 9711 | add_AT_section_offset (comp_unit_die, DW_AT_stmt_list, DEBUG_LINE_SECTION); |
e90b62db JM |
9712 | } |
9713 | ||
a3f97cbb JW |
9714 | /* Output the abbreviation table. */ |
9715 | fputc ('\n', asm_out_file); | |
9716 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
9717 | build_abbrev_table (comp_unit_die); | |
9718 | output_abbrev_section (); | |
9719 | ||
a3f97cbb JW |
9720 | /* Initialize the beginning DIE offset - and calculate sizes/offsets. */ |
9721 | next_die_offset = DWARF_COMPILE_UNIT_HEADER_SIZE; | |
9722 | calc_die_sizes (comp_unit_die); | |
9723 | ||
a3f97cbb JW |
9724 | /* Output debugging information. */ |
9725 | fputc ('\n', asm_out_file); | |
c53aa195 | 9726 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_INFO_SECTION); |
a3f97cbb JW |
9727 | output_compilation_unit_header (); |
9728 | output_die (comp_unit_die); | |
9729 | ||
d291dd49 JM |
9730 | if (pubname_table_in_use) |
9731 | { | |
9732 | /* Output public names table. */ | |
9733 | fputc ('\n', asm_out_file); | |
9734 | ASM_OUTPUT_SECTION (asm_out_file, PUBNAMES_SECTION); | |
9735 | output_pubnames (); | |
9736 | } | |
9737 | ||
a3f97cbb JW |
9738 | if (fde_table_in_use) |
9739 | { | |
a3f97cbb JW |
9740 | /* Output the address range information. */ |
9741 | fputc ('\n', asm_out_file); | |
9742 | ASM_OUTPUT_SECTION (asm_out_file, ARANGES_SECTION); | |
9743 | output_aranges (); | |
9744 | } | |
9745 | } | |
9a666dda | 9746 | #endif /* DWARF2_DEBUGGING_INFO */ |