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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, | |
257 | but typically, that is unecessary. */ | |
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 | ||
269 | #ifdef UNALIGNED_INT_ASM_OP | |
270 | ||
271 | #ifndef UNALIGNED_OFFSET_ASM_OP | |
272 | #define UNALIGNED_OFFSET_ASM_OP \ | |
273 | (DWARF_OFFSET_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
274 | #endif | |
275 | ||
276 | #ifndef UNALIGNED_WORD_ASM_OP | |
277 | #define UNALIGNED_WORD_ASM_OP \ | |
278 | (PTR_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
279 | #endif | |
280 | ||
a3f97cbb JW |
281 | #ifndef ASM_OUTPUT_DWARF_DELTA2 |
282 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
283 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_SHORT_ASM_OP); \ | |
284 | assemble_name (FILE, LABEL1); \ | |
285 | fprintf (FILE, "-"); \ | |
286 | assemble_name (FILE, LABEL2); \ | |
287 | } while (0) | |
288 | #endif | |
289 | ||
290 | #ifndef ASM_OUTPUT_DWARF_DELTA4 | |
291 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
292 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
293 | assemble_name (FILE, LABEL1); \ | |
294 | fprintf (FILE, "-"); \ | |
295 | assemble_name (FILE, LABEL2); \ | |
296 | } while (0) | |
297 | #endif | |
298 | ||
7e23cb16 JM |
299 | #ifndef ASM_OUTPUT_DWARF_DELTA |
300 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
301 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
302 | assemble_name (FILE, LABEL1); \ | |
303 | fprintf (FILE, "-"); \ | |
304 | assemble_name (FILE, LABEL2); \ | |
305 | } while (0) | |
306 | #endif | |
307 | ||
308 | #ifndef ASM_OUTPUT_DWARF_ADDR_DELTA | |
309 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
310 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ | |
311 | assemble_name (FILE, LABEL1); \ | |
312 | fprintf (FILE, "-"); \ | |
313 | assemble_name (FILE, LABEL2); \ | |
314 | } while (0) | |
315 | #endif | |
316 | ||
a3f97cbb JW |
317 | #ifndef ASM_OUTPUT_DWARF_ADDR |
318 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
7e23cb16 | 319 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ |
a3f97cbb JW |
320 | assemble_name (FILE, LABEL); \ |
321 | } while (0) | |
322 | #endif | |
323 | ||
324 | #ifndef ASM_OUTPUT_DWARF_ADDR_CONST | |
325 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,ADDR) \ | |
7e23cb16 JM |
326 | fprintf ((FILE), "\t%s\t%s", UNALIGNED_WORD_ASM_OP, (ADDR)) |
327 | #endif | |
328 | ||
7bb9fb0e JM |
329 | #ifndef ASM_OUTPUT_DWARF_OFFSET4 |
330 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ | |
331 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
332 | assemble_name (FILE, LABEL); \ | |
333 | } while (0) | |
334 | #endif | |
335 | ||
7e23cb16 JM |
336 | #ifndef ASM_OUTPUT_DWARF_OFFSET |
337 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ | |
338 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
339 | assemble_name (FILE, LABEL); \ | |
340 | } while (0) | |
a3f97cbb JW |
341 | #endif |
342 | ||
a3f97cbb JW |
343 | #ifndef ASM_OUTPUT_DWARF_DATA2 |
344 | #define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \ | |
345 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_SHORT_ASM_OP, (unsigned) VALUE) | |
346 | #endif | |
347 | ||
348 | #ifndef ASM_OUTPUT_DWARF_DATA4 | |
349 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
350 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, (unsigned) VALUE) | |
351 | #endif | |
352 | ||
7e23cb16 JM |
353 | #ifndef ASM_OUTPUT_DWARF_DATA |
354 | #define ASM_OUTPUT_DWARF_DATA(FILE,VALUE) \ | |
355 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_OFFSET_ASM_OP, \ | |
356 | (unsigned long) VALUE) | |
357 | #endif | |
358 | ||
359 | #ifndef ASM_OUTPUT_DWARF_ADDR_DATA | |
360 | #define ASM_OUTPUT_DWARF_ADDR_DATA(FILE,VALUE) \ | |
361 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_WORD_ASM_OP, \ | |
362 | (unsigned long) VALUE) | |
363 | #endif | |
364 | ||
a3f97cbb JW |
365 | #ifndef ASM_OUTPUT_DWARF_DATA8 |
366 | #define ASM_OUTPUT_DWARF_DATA8(FILE,HIGH_VALUE,LOW_VALUE) \ | |
367 | do { \ | |
368 | if (WORDS_BIG_ENDIAN) \ | |
369 | { \ | |
370 | fprintf ((FILE), "\t%s\t0x%x\n", UNALIGNED_INT_ASM_OP, HIGH_VALUE); \ | |
371 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, LOW_VALUE);\ | |
372 | } \ | |
373 | else \ | |
374 | { \ | |
375 | fprintf ((FILE), "\t%s\t0x%x\n", UNALIGNED_INT_ASM_OP, LOW_VALUE);\ | |
376 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, HIGH_VALUE); \ | |
377 | } \ | |
378 | } while (0) | |
379 | #endif | |
380 | ||
0021b564 JM |
381 | #else /* UNALIGNED_INT_ASM_OP */ |
382 | ||
383 | /* We don't have unaligned support, let's hope the normal output works for | |
384 | .debug_frame. */ | |
385 | ||
386 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
387 | assemble_integer (gen_rtx (SYMBOL_REF, Pmode, LABEL), PTR_SIZE, 1) | |
388 | ||
7bb9fb0e JM |
389 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ |
390 | assemble_integer (gen_rtx (SYMBOL_REF, SImode, LABEL), 4, 1) | |
391 | ||
0021b564 JM |
392 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ |
393 | assemble_integer (gen_rtx (SYMBOL_REF, SImode, LABEL), 4, 1) | |
394 | ||
395 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
396 | assemble_integer (gen_rtx (MINUS, HImode, \ | |
397 | gen_rtx (SYMBOL_REF, Pmode, LABEL1), \ | |
398 | gen_rtx (SYMBOL_REF, Pmode, LABEL2)), \ | |
399 | 2, 1) | |
400 | ||
401 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
402 | assemble_integer (gen_rtx (MINUS, SImode, \ | |
403 | gen_rtx (SYMBOL_REF, Pmode, LABEL1), \ | |
404 | gen_rtx (SYMBOL_REF, Pmode, LABEL2)), \ | |
405 | 4, 1) | |
406 | ||
407 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
408 | assemble_integer (gen_rtx (MINUS, Pmode, \ | |
409 | gen_rtx (SYMBOL_REF, Pmode, LABEL1), \ | |
410 | gen_rtx (SYMBOL_REF, Pmode, LABEL2)), \ | |
411 | PTR_SIZE, 1) | |
412 | ||
413 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
414 | ASM_OUTPUT_DWARF_DELTA4 (FILE,LABEL1,LABEL2) | |
415 | ||
416 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
417 | assemble_integer (GEN_INT (VALUE), 4, 1) | |
418 | ||
419 | #endif /* UNALIGNED_INT_ASM_OP */ | |
420 | ||
2ed2af28 PDM |
421 | #ifdef SET_ASM_OP |
422 | #ifndef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL | |
7bb9fb0e JM |
423 | #define ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL(FILE, SY, HI, LO) \ |
424 | do { \ | |
425 | fprintf (FILE, "\t%s\t", SET_ASM_OP); \ | |
426 | assemble_name (FILE, SY); \ | |
427 | fputc (',', FILE); \ | |
428 | assemble_name (FILE, HI); \ | |
429 | fputc ('-', FILE); \ | |
430 | assemble_name (FILE, LO); \ | |
431 | } while (0) | |
2ed2af28 PDM |
432 | #endif |
433 | #endif /* SET_ASM_OP */ | |
434 | ||
a6ab3aad | 435 | /* This is similar to the default ASM_OUTPUT_ASCII, except that no trailing |
2ed2af28 | 436 | newline is produced. When flag_debug_asm is asserted, we add commentary |
a6ab3aad JM |
437 | at the end of the line, so we must avoid output of a newline here. */ |
438 | #ifndef ASM_OUTPUT_DWARF_STRING | |
439 | #define ASM_OUTPUT_DWARF_STRING(FILE,P) \ | |
440 | do { \ | |
441 | register int slen = strlen(P); \ | |
442 | register char *p = (P); \ | |
443 | register int i; \ | |
444 | fprintf (FILE, "\t.ascii \""); \ | |
445 | for (i = 0; i < slen; i++) \ | |
446 | { \ | |
447 | register int c = p[i]; \ | |
448 | if (c == '\"' || c == '\\') \ | |
449 | putc ('\\', FILE); \ | |
450 | if (c >= ' ' && c < 0177) \ | |
451 | putc (c, FILE); \ | |
452 | else \ | |
453 | { \ | |
454 | fprintf (FILE, "\\%o", c); \ | |
455 | } \ | |
456 | } \ | |
457 | fprintf (FILE, "\\0\""); \ | |
458 | } \ | |
459 | while (0) | |
460 | #endif | |
461 | ||
c8cc5c4a | 462 | /* The DWARF 2 CFA column which tracks the return address. Normally this |
a94dbf2c JM |
463 | is the column for PC, or the first column after all of the hard |
464 | registers. */ | |
c8cc5c4a | 465 | #ifndef DWARF_FRAME_RETURN_COLUMN |
a94dbf2c JM |
466 | #ifdef PC_REGNUM |
467 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) | |
468 | #else | |
466446b0 | 469 | #define DWARF_FRAME_RETURN_COLUMN FIRST_PSEUDO_REGISTER |
a94dbf2c | 470 | #endif |
c8cc5c4a JM |
471 | #endif |
472 | ||
473 | /* The mapping from gcc register number to DWARF 2 CFA column number. By | |
469ac993 | 474 | default, we just provide columns for all registers. */ |
c8cc5c4a | 475 | #ifndef DWARF_FRAME_REGNUM |
469ac993 | 476 | #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) |
c8cc5c4a | 477 | #endif |
3f76745e | 478 | |
0021b564 JM |
479 | /* Hook used by __throw. */ |
480 | ||
481 | rtx | |
482 | expand_builtin_dwarf_fp_regnum () | |
483 | { | |
484 | return GEN_INT (DWARF_FRAME_REGNUM (HARD_FRAME_POINTER_REGNUM)); | |
485 | } | |
486 | ||
a6ab3aad JM |
487 | /* The offset from the incoming value of %sp to the top of the stack frame |
488 | for the current function. */ | |
489 | #ifndef INCOMING_FRAME_SP_OFFSET | |
490 | #define INCOMING_FRAME_SP_OFFSET 0 | |
491 | #endif | |
492 | ||
71dfc51f | 493 | /* Return a pointer to a copy of the section string name S with all |
a3f97cbb | 494 | attributes stripped off. */ |
71dfc51f RK |
495 | |
496 | static inline char * | |
a3f97cbb | 497 | stripattributes (s) |
71dfc51f | 498 | char *s; |
a3f97cbb | 499 | { |
71dfc51f RK |
500 | char *stripped = xstrdup (s); |
501 | char *p = stripped; | |
502 | ||
a3f97cbb JW |
503 | while (*p && *p != ',') |
504 | p++; | |
71dfc51f | 505 | |
a3f97cbb JW |
506 | *p = '\0'; |
507 | return stripped; | |
508 | } | |
509 | ||
3f76745e | 510 | /* Return the register number described by a given RTL node. */ |
71dfc51f | 511 | |
3f76745e JM |
512 | static unsigned |
513 | reg_number (rtl) | |
514 | register rtx rtl; | |
a3f97cbb | 515 | { |
3f76745e | 516 | register unsigned regno = REGNO (rtl); |
a3f97cbb | 517 | |
3f76745e | 518 | if (regno >= FIRST_PSEUDO_REGISTER) |
a3f97cbb | 519 | { |
3f76745e JM |
520 | warning ("internal regno botch: regno = %d\n", regno); |
521 | regno = 0; | |
522 | } | |
a3f97cbb | 523 | |
3f76745e JM |
524 | regno = DBX_REGISTER_NUMBER (regno); |
525 | return regno; | |
526 | } | |
a3f97cbb | 527 | |
2f3ca9e7 JM |
528 | struct reg_size_range |
529 | { | |
530 | int beg; | |
531 | int end; | |
532 | int size; | |
533 | }; | |
534 | ||
535 | /* Given a register number in REG_TREE, return an rtx for its size in bytes. | |
536 | We do this in kind of a roundabout way, by building up a list of | |
537 | register size ranges and seeing where our register falls in one of those | |
538 | ranges. We need to do it this way because REG_TREE is not a constant, | |
539 | and the target macros were not designed to make this task easy. */ | |
540 | ||
541 | rtx | |
542 | expand_builtin_dwarf_reg_size (reg_tree, target) | |
543 | tree reg_tree; | |
544 | rtx target; | |
545 | { | |
31c8581d | 546 | enum machine_mode mode; |
d1485032 | 547 | int size; |
2f3ca9e7 JM |
548 | struct reg_size_range ranges[5]; |
549 | tree t, t2; | |
550 | ||
d1485032 JM |
551 | int i = 0; |
552 | int n_ranges = 0; | |
553 | int last_size = -1; | |
2f3ca9e7 | 554 | |
d1485032 | 555 | for (; i < FIRST_PSEUDO_REGISTER; ++i) |
2f3ca9e7 | 556 | { |
d1485032 JM |
557 | /* The return address is out of order on the MIPS, and we don't use |
558 | copy_reg for it anyway, so we don't care here how large it is. */ | |
559 | if (DWARF_FRAME_REGNUM (i) == DWARF_FRAME_RETURN_COLUMN) | |
560 | continue; | |
561 | ||
31c8581d JW |
562 | mode = reg_raw_mode[i]; |
563 | /* CCmode is arbitrarily given a size of 4 bytes. It is more useful | |
564 | to use the same size as word_mode, since that reduces the number | |
565 | of ranges we need. It should not matter, since the result should | |
566 | never be used for a condition code register anyways. */ | |
567 | if (mode == CCmode) | |
568 | mode = word_mode; | |
569 | size = GET_MODE_SIZE (mode); | |
570 | ||
d1485032 | 571 | if (size != last_size) |
2f3ca9e7 | 572 | { |
2f3ca9e7 | 573 | ranges[n_ranges].beg = i; |
d1485032 | 574 | ranges[n_ranges].size = last_size = GET_MODE_SIZE (reg_raw_mode[i]); |
2f3ca9e7 | 575 | ++n_ranges; |
3a88cbd1 JL |
576 | if (n_ranges >= 5) |
577 | abort (); | |
2f3ca9e7 | 578 | } |
d1485032 | 579 | ranges[n_ranges-1].end = i; |
2f3ca9e7 | 580 | } |
2f3ca9e7 JM |
581 | |
582 | /* The usual case: fp regs surrounded by general regs. */ | |
583 | if (n_ranges == 3 && ranges[0].size == ranges[2].size) | |
584 | { | |
3a88cbd1 JL |
585 | if ((DWARF_FRAME_REGNUM (ranges[1].end) |
586 | - DWARF_FRAME_REGNUM (ranges[1].beg)) | |
587 | != ranges[1].end - ranges[1].beg) | |
588 | abort (); | |
2f3ca9e7 JM |
589 | t = fold (build (GE_EXPR, integer_type_node, reg_tree, |
590 | build_int_2 (DWARF_FRAME_REGNUM (ranges[1].beg), 0))); | |
591 | t2 = fold (build (LE_EXPR, integer_type_node, reg_tree, | |
592 | build_int_2 (DWARF_FRAME_REGNUM (ranges[1].end), 0))); | |
593 | t = fold (build (TRUTH_ANDIF_EXPR, integer_type_node, t, t2)); | |
594 | t = fold (build (COND_EXPR, integer_type_node, t, | |
595 | build_int_2 (ranges[1].size, 0), | |
596 | build_int_2 (ranges[0].size, 0))); | |
597 | } | |
598 | else | |
599 | { | |
600 | --n_ranges; | |
601 | t = build_int_2 (ranges[n_ranges].size, 0); | |
602 | size = DWARF_FRAME_REGNUM (ranges[n_ranges].beg); | |
603 | for (; n_ranges--; ) | |
604 | { | |
3a88cbd1 JL |
605 | if ((DWARF_FRAME_REGNUM (ranges[n_ranges].end) |
606 | - DWARF_FRAME_REGNUM (ranges[n_ranges].beg)) | |
607 | != ranges[n_ranges].end - ranges[n_ranges].beg) | |
608 | abort (); | |
609 | if (DWARF_FRAME_REGNUM (ranges[n_ranges].beg) >= size) | |
610 | abort (); | |
2f3ca9e7 JM |
611 | size = DWARF_FRAME_REGNUM (ranges[n_ranges].beg); |
612 | t2 = fold (build (LE_EXPR, integer_type_node, reg_tree, | |
613 | build_int_2 (DWARF_FRAME_REGNUM | |
614 | (ranges[n_ranges].end), 0))); | |
615 | t = fold (build (COND_EXPR, integer_type_node, t2, | |
616 | build_int_2 (ranges[n_ranges].size, 0), t)); | |
617 | } | |
618 | } | |
619 | return expand_expr (t, target, Pmode, 0); | |
620 | } | |
621 | ||
3f76745e | 622 | /* Convert a DWARF call frame info. operation to its string name */ |
a3f97cbb | 623 | |
3f76745e JM |
624 | static char * |
625 | dwarf_cfi_name (cfi_opc) | |
626 | register unsigned cfi_opc; | |
627 | { | |
628 | switch (cfi_opc) | |
629 | { | |
630 | case DW_CFA_advance_loc: | |
631 | return "DW_CFA_advance_loc"; | |
632 | case DW_CFA_offset: | |
633 | return "DW_CFA_offset"; | |
634 | case DW_CFA_restore: | |
635 | return "DW_CFA_restore"; | |
636 | case DW_CFA_nop: | |
637 | return "DW_CFA_nop"; | |
638 | case DW_CFA_set_loc: | |
639 | return "DW_CFA_set_loc"; | |
640 | case DW_CFA_advance_loc1: | |
641 | return "DW_CFA_advance_loc1"; | |
642 | case DW_CFA_advance_loc2: | |
643 | return "DW_CFA_advance_loc2"; | |
644 | case DW_CFA_advance_loc4: | |
645 | return "DW_CFA_advance_loc4"; | |
646 | case DW_CFA_offset_extended: | |
647 | return "DW_CFA_offset_extended"; | |
648 | case DW_CFA_restore_extended: | |
649 | return "DW_CFA_restore_extended"; | |
650 | case DW_CFA_undefined: | |
651 | return "DW_CFA_undefined"; | |
652 | case DW_CFA_same_value: | |
653 | return "DW_CFA_same_value"; | |
654 | case DW_CFA_register: | |
655 | return "DW_CFA_register"; | |
656 | case DW_CFA_remember_state: | |
657 | return "DW_CFA_remember_state"; | |
658 | case DW_CFA_restore_state: | |
659 | return "DW_CFA_restore_state"; | |
660 | case DW_CFA_def_cfa: | |
661 | return "DW_CFA_def_cfa"; | |
662 | case DW_CFA_def_cfa_register: | |
663 | return "DW_CFA_def_cfa_register"; | |
664 | case DW_CFA_def_cfa_offset: | |
665 | return "DW_CFA_def_cfa_offset"; | |
c53aa195 | 666 | |
3f76745e JM |
667 | /* SGI/MIPS specific */ |
668 | case DW_CFA_MIPS_advance_loc8: | |
669 | return "DW_CFA_MIPS_advance_loc8"; | |
c53aa195 JM |
670 | |
671 | /* GNU extensions */ | |
672 | case DW_CFA_GNU_window_save: | |
673 | return "DW_CFA_GNU_window_save"; | |
0021b564 JM |
674 | case DW_CFA_GNU_args_size: |
675 | return "DW_CFA_GNU_args_size"; | |
c53aa195 | 676 | |
3f76745e JM |
677 | default: |
678 | return "DW_CFA_<unknown>"; | |
679 | } | |
680 | } | |
a3f97cbb | 681 | |
3f76745e | 682 | /* Return a pointer to a newly allocated Call Frame Instruction. */ |
71dfc51f | 683 | |
3f76745e JM |
684 | static inline dw_cfi_ref |
685 | new_cfi () | |
686 | { | |
687 | register dw_cfi_ref cfi = (dw_cfi_ref) xmalloc (sizeof (dw_cfi_node)); | |
71dfc51f | 688 | |
3f76745e JM |
689 | cfi->dw_cfi_next = NULL; |
690 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = 0; | |
691 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = 0; | |
a3f97cbb | 692 | |
3f76745e JM |
693 | return cfi; |
694 | } | |
a3f97cbb | 695 | |
3f76745e | 696 | /* Add a Call Frame Instruction to list of instructions. */ |
a3f97cbb | 697 | |
3f76745e JM |
698 | static inline void |
699 | add_cfi (list_head, cfi) | |
700 | register dw_cfi_ref *list_head; | |
701 | register dw_cfi_ref cfi; | |
702 | { | |
703 | register dw_cfi_ref *p; | |
a3f97cbb | 704 | |
3f76745e JM |
705 | /* Find the end of the chain. */ |
706 | for (p = list_head; (*p) != NULL; p = &(*p)->dw_cfi_next) | |
707 | ; | |
708 | ||
709 | *p = cfi; | |
a3f97cbb JW |
710 | } |
711 | ||
3f76745e | 712 | /* Generate a new label for the CFI info to refer to. */ |
71dfc51f | 713 | |
c53aa195 | 714 | char * |
3f76745e | 715 | dwarf2out_cfi_label () |
a3f97cbb | 716 | { |
3f76745e JM |
717 | static char label[20]; |
718 | static unsigned long label_num = 0; | |
719 | ||
720 | ASM_GENERATE_INTERNAL_LABEL (label, "LCFI", label_num++); | |
721 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
722 | ||
723 | return label; | |
a3f97cbb JW |
724 | } |
725 | ||
3f76745e JM |
726 | /* Add CFI to the current fde at the PC value indicated by LABEL if specified, |
727 | or to the CIE if LABEL is NULL. */ | |
71dfc51f | 728 | |
3f76745e JM |
729 | static void |
730 | add_fde_cfi (label, cfi) | |
731 | register char *label; | |
732 | register dw_cfi_ref cfi; | |
a3f97cbb | 733 | { |
3f76745e JM |
734 | if (label) |
735 | { | |
736 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; | |
a3f97cbb | 737 | |
3f76745e JM |
738 | if (*label == 0) |
739 | label = dwarf2out_cfi_label (); | |
71dfc51f | 740 | |
3f76745e JM |
741 | if (fde->dw_fde_current_label == NULL |
742 | || strcmp (label, fde->dw_fde_current_label) != 0) | |
743 | { | |
744 | register dw_cfi_ref xcfi; | |
a3f97cbb | 745 | |
3f76745e | 746 | fde->dw_fde_current_label = label = xstrdup (label); |
71dfc51f | 747 | |
3f76745e JM |
748 | /* Set the location counter to the new label. */ |
749 | xcfi = new_cfi (); | |
750 | xcfi->dw_cfi_opc = DW_CFA_advance_loc4; | |
751 | xcfi->dw_cfi_oprnd1.dw_cfi_addr = label; | |
752 | add_cfi (&fde->dw_fde_cfi, xcfi); | |
753 | } | |
71dfc51f | 754 | |
3f76745e JM |
755 | add_cfi (&fde->dw_fde_cfi, cfi); |
756 | } | |
757 | ||
758 | else | |
759 | add_cfi (&cie_cfi_head, cfi); | |
a3f97cbb JW |
760 | } |
761 | ||
3f76745e | 762 | /* Subroutine of lookup_cfa. */ |
71dfc51f | 763 | |
3f76745e JM |
764 | static inline void |
765 | lookup_cfa_1 (cfi, regp, offsetp) | |
766 | register dw_cfi_ref cfi; | |
767 | register unsigned long *regp; | |
768 | register long *offsetp; | |
a3f97cbb | 769 | { |
3f76745e JM |
770 | switch (cfi->dw_cfi_opc) |
771 | { | |
772 | case DW_CFA_def_cfa_offset: | |
773 | *offsetp = cfi->dw_cfi_oprnd1.dw_cfi_offset; | |
774 | break; | |
775 | case DW_CFA_def_cfa_register: | |
776 | *regp = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; | |
777 | break; | |
778 | case DW_CFA_def_cfa: | |
779 | *regp = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; | |
780 | *offsetp = cfi->dw_cfi_oprnd2.dw_cfi_offset; | |
781 | break; | |
e9a25f70 JL |
782 | default: |
783 | break; | |
3f76745e | 784 | } |
a3f97cbb JW |
785 | } |
786 | ||
3f76745e | 787 | /* Find the previous value for the CFA. */ |
71dfc51f | 788 | |
3f76745e JM |
789 | static void |
790 | lookup_cfa (regp, offsetp) | |
791 | register unsigned long *regp; | |
792 | register long *offsetp; | |
a3f97cbb | 793 | { |
3f76745e JM |
794 | register dw_cfi_ref cfi; |
795 | ||
796 | *regp = (unsigned long) -1; | |
797 | *offsetp = 0; | |
798 | ||
799 | for (cfi = cie_cfi_head; cfi; cfi = cfi->dw_cfi_next) | |
800 | lookup_cfa_1 (cfi, regp, offsetp); | |
801 | ||
802 | if (fde_table_in_use) | |
a3f97cbb | 803 | { |
3f76745e JM |
804 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; |
805 | for (cfi = fde->dw_fde_cfi; cfi; cfi = cfi->dw_cfi_next) | |
806 | lookup_cfa_1 (cfi, regp, offsetp); | |
a3f97cbb JW |
807 | } |
808 | } | |
809 | ||
3f76745e | 810 | /* The current rule for calculating the DWARF2 canonical frame address. */ |
a6ab3aad | 811 | static unsigned long cfa_reg; |
3f76745e | 812 | static long cfa_offset; |
71dfc51f | 813 | |
3f76745e JM |
814 | /* The register used for saving registers to the stack, and its offset |
815 | from the CFA. */ | |
816 | static unsigned cfa_store_reg; | |
817 | static long cfa_store_offset; | |
818 | ||
0021b564 JM |
819 | /* The running total of the size of arguments pushed onto the stack. */ |
820 | static long args_size; | |
821 | ||
3f76745e JM |
822 | /* Entry point to update the canonical frame address (CFA). |
823 | LABEL is passed to add_fde_cfi. The value of CFA is now to be | |
824 | calculated from REG+OFFSET. */ | |
825 | ||
826 | void | |
827 | dwarf2out_def_cfa (label, reg, offset) | |
828 | register char *label; | |
829 | register unsigned reg; | |
830 | register long offset; | |
a3f97cbb | 831 | { |
3f76745e JM |
832 | register dw_cfi_ref cfi; |
833 | unsigned long old_reg; | |
834 | long old_offset; | |
835 | ||
5bef9b1f JM |
836 | cfa_reg = reg; |
837 | cfa_offset = offset; | |
838 | if (cfa_store_reg == reg) | |
839 | cfa_store_offset = offset; | |
840 | ||
3f76745e JM |
841 | reg = DWARF_FRAME_REGNUM (reg); |
842 | lookup_cfa (&old_reg, &old_offset); | |
843 | ||
844 | if (reg == old_reg && offset == old_offset) | |
845 | return; | |
846 | ||
847 | cfi = new_cfi (); | |
848 | ||
849 | if (reg == old_reg) | |
a3f97cbb | 850 | { |
3f76745e JM |
851 | cfi->dw_cfi_opc = DW_CFA_def_cfa_offset; |
852 | cfi->dw_cfi_oprnd1.dw_cfi_offset = offset; | |
853 | } | |
a3f97cbb | 854 | |
3f76745e JM |
855 | #ifndef MIPS_DEBUGGING_INFO /* SGI dbx thinks this means no offset. */ |
856 | else if (offset == old_offset && old_reg != (unsigned long) -1) | |
857 | { | |
858 | cfi->dw_cfi_opc = DW_CFA_def_cfa_register; | |
859 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
860 | } | |
861 | #endif | |
a3f97cbb | 862 | |
3f76745e JM |
863 | else |
864 | { | |
865 | cfi->dw_cfi_opc = DW_CFA_def_cfa; | |
866 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
867 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; | |
a3f97cbb | 868 | } |
3f76745e JM |
869 | |
870 | add_fde_cfi (label, cfi); | |
a3f97cbb JW |
871 | } |
872 | ||
3f76745e JM |
873 | /* Add the CFI for saving a register. REG is the CFA column number. |
874 | LABEL is passed to add_fde_cfi. | |
875 | If SREG is -1, the register is saved at OFFSET from the CFA; | |
876 | otherwise it is saved in SREG. */ | |
71dfc51f | 877 | |
3f76745e JM |
878 | static void |
879 | reg_save (label, reg, sreg, offset) | |
880 | register char * label; | |
881 | register unsigned reg; | |
882 | register unsigned sreg; | |
883 | register long offset; | |
a3f97cbb | 884 | { |
3f76745e JM |
885 | register dw_cfi_ref cfi = new_cfi (); |
886 | ||
887 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
888 | ||
889 | if (sreg == -1) | |
a3f97cbb | 890 | { |
3f76745e JM |
891 | if (reg & ~0x3f) |
892 | /* The register number won't fit in 6 bits, so we have to use | |
893 | the long form. */ | |
894 | cfi->dw_cfi_opc = DW_CFA_offset_extended; | |
895 | else | |
896 | cfi->dw_cfi_opc = DW_CFA_offset; | |
897 | ||
898 | offset /= DWARF_CIE_DATA_ALIGNMENT; | |
3a88cbd1 JL |
899 | if (offset < 0) |
900 | abort (); | |
3f76745e JM |
901 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; |
902 | } | |
903 | else | |
904 | { | |
905 | cfi->dw_cfi_opc = DW_CFA_register; | |
906 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = sreg; | |
907 | } | |
908 | ||
909 | add_fde_cfi (label, cfi); | |
910 | } | |
911 | ||
c53aa195 JM |
912 | /* Add the CFI for saving a register window. LABEL is passed to reg_save. |
913 | This CFI tells the unwinder that it needs to restore the window registers | |
914 | from the previous frame's window save area. | |
915 | ||
916 | ??? Perhaps we should note in the CIE where windows are saved (instead of | |
917 | assuming 0(cfa)) and what registers are in the window. */ | |
918 | ||
919 | void | |
920 | dwarf2out_window_save (label) | |
921 | register char * label; | |
922 | { | |
923 | register dw_cfi_ref cfi = new_cfi (); | |
924 | cfi->dw_cfi_opc = DW_CFA_GNU_window_save; | |
925 | add_fde_cfi (label, cfi); | |
926 | } | |
927 | ||
0021b564 JM |
928 | /* Add a CFI to update the running total of the size of arguments |
929 | pushed onto the stack. */ | |
930 | ||
931 | void | |
932 | dwarf2out_args_size (label, size) | |
933 | char *label; | |
934 | long size; | |
935 | { | |
936 | register dw_cfi_ref cfi = new_cfi (); | |
937 | cfi->dw_cfi_opc = DW_CFA_GNU_args_size; | |
938 | cfi->dw_cfi_oprnd1.dw_cfi_offset = size; | |
939 | add_fde_cfi (label, cfi); | |
940 | } | |
941 | ||
c53aa195 JM |
942 | /* Entry point for saving a register to the stack. REG is the GCC register |
943 | number. LABEL and OFFSET are passed to reg_save. */ | |
3f76745e JM |
944 | |
945 | void | |
946 | dwarf2out_reg_save (label, reg, offset) | |
947 | register char * label; | |
948 | register unsigned reg; | |
949 | register long offset; | |
950 | { | |
951 | reg_save (label, DWARF_FRAME_REGNUM (reg), -1, offset); | |
952 | } | |
953 | ||
c53aa195 JM |
954 | /* Entry point for saving the return address in the stack. |
955 | LABEL and OFFSET are passed to reg_save. */ | |
956 | ||
957 | void | |
958 | dwarf2out_return_save (label, offset) | |
959 | register char * label; | |
960 | register long offset; | |
961 | { | |
962 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, -1, offset); | |
963 | } | |
964 | ||
965 | /* Entry point for saving the return address in a register. | |
966 | LABEL and SREG are passed to reg_save. */ | |
967 | ||
968 | void | |
969 | dwarf2out_return_reg (label, sreg) | |
970 | register char * label; | |
971 | register unsigned sreg; | |
972 | { | |
973 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, sreg, 0); | |
974 | } | |
975 | ||
3f76745e JM |
976 | /* Record the initial position of the return address. RTL is |
977 | INCOMING_RETURN_ADDR_RTX. */ | |
978 | ||
979 | static void | |
980 | initial_return_save (rtl) | |
981 | register rtx rtl; | |
982 | { | |
983 | unsigned reg = -1; | |
984 | long offset = 0; | |
985 | ||
986 | switch (GET_CODE (rtl)) | |
987 | { | |
988 | case REG: | |
989 | /* RA is in a register. */ | |
990 | reg = reg_number (rtl); | |
991 | break; | |
992 | case MEM: | |
993 | /* RA is on the stack. */ | |
994 | rtl = XEXP (rtl, 0); | |
995 | switch (GET_CODE (rtl)) | |
996 | { | |
997 | case REG: | |
3a88cbd1 JL |
998 | if (REGNO (rtl) != STACK_POINTER_REGNUM) |
999 | abort (); | |
3f76745e JM |
1000 | offset = 0; |
1001 | break; | |
1002 | case PLUS: | |
3a88cbd1 JL |
1003 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
1004 | abort (); | |
3f76745e JM |
1005 | offset = INTVAL (XEXP (rtl, 1)); |
1006 | break; | |
1007 | case MINUS: | |
3a88cbd1 JL |
1008 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
1009 | abort (); | |
3f76745e JM |
1010 | offset = -INTVAL (XEXP (rtl, 1)); |
1011 | break; | |
1012 | default: | |
1013 | abort (); | |
1014 | } | |
1015 | break; | |
c53aa195 JM |
1016 | case PLUS: |
1017 | /* The return address is at some offset from any value we can | |
1018 | actually load. For instance, on the SPARC it is in %i7+8. Just | |
1019 | ignore the offset for now; it doesn't matter for unwinding frames. */ | |
3a88cbd1 JL |
1020 | if (GET_CODE (XEXP (rtl, 1)) != CONST_INT) |
1021 | abort (); | |
c53aa195 JM |
1022 | initial_return_save (XEXP (rtl, 0)); |
1023 | return; | |
a3f97cbb | 1024 | default: |
3f76745e | 1025 | abort (); |
a3f97cbb | 1026 | } |
3f76745e | 1027 | |
a6ab3aad | 1028 | reg_save (NULL, DWARF_FRAME_RETURN_COLUMN, reg, offset - cfa_offset); |
a3f97cbb JW |
1029 | } |
1030 | ||
0021b564 JM |
1031 | /* Check INSN to see if it looks like a push or a stack adjustment, and |
1032 | make a note of it if it does. EH uses this information to find out how | |
1033 | much extra space it needs to pop off the stack. */ | |
1034 | ||
1035 | static void | |
1036 | dwarf2out_stack_adjust (insn) | |
1037 | rtx insn; | |
1038 | { | |
0021b564 JM |
1039 | long offset; |
1040 | char *label; | |
1041 | ||
6020d360 | 1042 | if (GET_CODE (insn) == BARRIER) |
0021b564 | 1043 | { |
6020d360 JM |
1044 | /* When we see a BARRIER, we know to reset args_size to 0. Usually |
1045 | the compiler will have already emitted a stack adjustment, but | |
1046 | doesn't bother for calls to noreturn functions. */ | |
1047 | #ifdef STACK_GROWS_DOWNWARD | |
1048 | offset = -args_size; | |
1049 | #else | |
1050 | offset = args_size; | |
1051 | #endif | |
0021b564 | 1052 | } |
6020d360 | 1053 | else if (GET_CODE (PATTERN (insn)) == SET) |
0021b564 | 1054 | { |
6020d360 JM |
1055 | rtx src, dest; |
1056 | enum rtx_code code; | |
1057 | ||
1058 | insn = PATTERN (insn); | |
1059 | src = SET_SRC (insn); | |
1060 | dest = SET_DEST (insn); | |
0021b564 | 1061 | |
6020d360 JM |
1062 | if (dest == stack_pointer_rtx) |
1063 | { | |
1064 | /* (set (reg sp) (plus (reg sp) (const_int))) */ | |
1065 | code = GET_CODE (src); | |
1066 | if (! (code == PLUS || code == MINUS) | |
1067 | || XEXP (src, 0) != stack_pointer_rtx | |
1068 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
1069 | return; | |
1070 | ||
1071 | offset = INTVAL (XEXP (src, 1)); | |
1072 | } | |
1073 | else if (GET_CODE (dest) == MEM) | |
1074 | { | |
1075 | /* (set (mem (pre_dec (reg sp))) (foo)) */ | |
1076 | src = XEXP (dest, 0); | |
1077 | code = GET_CODE (src); | |
1078 | ||
1079 | if (! (code == PRE_DEC || code == PRE_INC) | |
1080 | || XEXP (src, 0) != stack_pointer_rtx) | |
1081 | return; | |
1082 | ||
1083 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1084 | } | |
1085 | else | |
0021b564 JM |
1086 | return; |
1087 | ||
6020d360 JM |
1088 | if (code == PLUS || code == PRE_INC) |
1089 | offset = -offset; | |
0021b564 JM |
1090 | } |
1091 | else | |
1092 | return; | |
1093 | ||
6020d360 JM |
1094 | if (offset == 0) |
1095 | return; | |
1096 | ||
0021b564 JM |
1097 | if (cfa_reg == STACK_POINTER_REGNUM) |
1098 | cfa_offset += offset; | |
1099 | ||
1100 | #ifndef STACK_GROWS_DOWNWARD | |
1101 | offset = -offset; | |
1102 | #endif | |
1103 | args_size += offset; | |
1104 | if (args_size < 0) | |
1105 | args_size = 0; | |
1106 | ||
1107 | label = dwarf2out_cfi_label (); | |
1108 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1109 | dwarf2out_args_size (label, args_size); | |
1110 | } | |
1111 | ||
3f76745e JM |
1112 | /* Record call frame debugging information for INSN, which either |
1113 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
1114 | register to the stack. If INSN is NULL_RTX, initialize our state. */ | |
71dfc51f | 1115 | |
3f76745e JM |
1116 | void |
1117 | dwarf2out_frame_debug (insn) | |
1118 | rtx insn; | |
a3f97cbb | 1119 | { |
3f76745e JM |
1120 | char *label; |
1121 | rtx src, dest; | |
1122 | long offset; | |
1123 | ||
1124 | /* A temporary register used in adjusting SP or setting up the store_reg. */ | |
1125 | static unsigned cfa_temp_reg; | |
1126 | static long cfa_temp_value; | |
1127 | ||
1128 | if (insn == NULL_RTX) | |
a3f97cbb | 1129 | { |
3f76745e | 1130 | /* Set up state for generating call frame debug info. */ |
a6ab3aad | 1131 | lookup_cfa (&cfa_reg, &cfa_offset); |
3a88cbd1 JL |
1132 | if (cfa_reg != DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM)) |
1133 | abort (); | |
3f76745e | 1134 | cfa_reg = STACK_POINTER_REGNUM; |
a6ab3aad JM |
1135 | cfa_store_reg = cfa_reg; |
1136 | cfa_store_offset = cfa_offset; | |
3f76745e JM |
1137 | cfa_temp_reg = -1; |
1138 | cfa_temp_value = 0; | |
1139 | return; | |
1140 | } | |
1141 | ||
0021b564 JM |
1142 | if (! RTX_FRAME_RELATED_P (insn)) |
1143 | { | |
6020d360 | 1144 | dwarf2out_stack_adjust (insn); |
0021b564 JM |
1145 | return; |
1146 | } | |
1147 | ||
3f76745e JM |
1148 | label = dwarf2out_cfi_label (); |
1149 | ||
1150 | insn = PATTERN (insn); | |
267c09ab JM |
1151 | /* Assume that in a PARALLEL prologue insn, only the first elt is |
1152 | significant. Currently this is true. */ | |
1153 | if (GET_CODE (insn) == PARALLEL) | |
1154 | insn = XVECEXP (insn, 0, 0); | |
3a88cbd1 JL |
1155 | if (GET_CODE (insn) != SET) |
1156 | abort (); | |
3f76745e JM |
1157 | |
1158 | src = SET_SRC (insn); | |
1159 | dest = SET_DEST (insn); | |
1160 | ||
1161 | switch (GET_CODE (dest)) | |
1162 | { | |
1163 | case REG: | |
1164 | /* Update the CFA rule wrt SP or FP. Make sure src is | |
1165 | relative to the current CFA register. */ | |
1166 | switch (GET_CODE (src)) | |
1167 | { | |
1168 | /* Setting FP from SP. */ | |
1169 | case REG: | |
3a88cbd1 JL |
1170 | if (cfa_reg != REGNO (src)) |
1171 | abort (); | |
1172 | if (REGNO (dest) != STACK_POINTER_REGNUM | |
1173 | && !(frame_pointer_needed | |
1174 | && REGNO (dest) == HARD_FRAME_POINTER_REGNUM)) | |
1175 | abort (); | |
3f76745e JM |
1176 | cfa_reg = REGNO (dest); |
1177 | break; | |
1178 | ||
1179 | case PLUS: | |
1180 | case MINUS: | |
1181 | if (dest == stack_pointer_rtx) | |
1182 | { | |
1183 | /* Adjusting SP. */ | |
1184 | switch (GET_CODE (XEXP (src, 1))) | |
1185 | { | |
1186 | case CONST_INT: | |
1187 | offset = INTVAL (XEXP (src, 1)); | |
1188 | break; | |
1189 | case REG: | |
3a88cbd1 JL |
1190 | if (REGNO (XEXP (src, 1)) != cfa_temp_reg) |
1191 | abort (); | |
3f76745e JM |
1192 | offset = cfa_temp_value; |
1193 | break; | |
1194 | default: | |
1195 | abort (); | |
1196 | } | |
1197 | ||
0021b564 JM |
1198 | if (XEXP (src, 0) == hard_frame_pointer_rtx) |
1199 | { | |
1200 | /* Restoring SP from FP in the epilogue. */ | |
3a88cbd1 JL |
1201 | if (cfa_reg != HARD_FRAME_POINTER_REGNUM) |
1202 | abort (); | |
0021b564 JM |
1203 | cfa_reg = STACK_POINTER_REGNUM; |
1204 | } | |
3a88cbd1 JL |
1205 | else if (XEXP (src, 0) != stack_pointer_rtx) |
1206 | abort (); | |
0021b564 | 1207 | |
3f76745e JM |
1208 | if (GET_CODE (src) == PLUS) |
1209 | offset = -offset; | |
1210 | if (cfa_reg == STACK_POINTER_REGNUM) | |
1211 | cfa_offset += offset; | |
1212 | if (cfa_store_reg == STACK_POINTER_REGNUM) | |
1213 | cfa_store_offset += offset; | |
3f76745e JM |
1214 | } |
1215 | else | |
1216 | { | |
3a88cbd1 | 1217 | if (GET_CODE (src) != PLUS |
31d52528 | 1218 | || XEXP (src, 1) != stack_pointer_rtx) |
3a88cbd1 JL |
1219 | abort (); |
1220 | if (GET_CODE (XEXP (src, 0)) != REG | |
1221 | || REGNO (XEXP (src, 0)) != cfa_temp_reg) | |
1222 | abort (); | |
218c2cdb JW |
1223 | if (cfa_reg != STACK_POINTER_REGNUM) |
1224 | abort (); | |
3f76745e | 1225 | cfa_store_reg = REGNO (dest); |
218c2cdb | 1226 | cfa_store_offset = cfa_offset - cfa_temp_value; |
3f76745e JM |
1227 | } |
1228 | break; | |
1229 | ||
1230 | case CONST_INT: | |
1231 | cfa_temp_reg = REGNO (dest); | |
1232 | cfa_temp_value = INTVAL (src); | |
1233 | break; | |
1234 | ||
ef76d03b | 1235 | case IOR: |
3a88cbd1 JL |
1236 | if (GET_CODE (XEXP (src, 0)) != REG |
1237 | || REGNO (XEXP (src, 0)) != cfa_temp_reg | |
1238 | || REGNO (dest) != cfa_temp_reg | |
1239 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
1240 | abort (); | |
ef76d03b JW |
1241 | cfa_temp_value |= INTVAL (XEXP (src, 1)); |
1242 | break; | |
1243 | ||
3f76745e JM |
1244 | default: |
1245 | abort (); | |
1246 | } | |
1247 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1248 | break; | |
1249 | ||
1250 | case MEM: | |
1251 | /* Saving a register to the stack. Make sure dest is relative to the | |
1252 | CFA register. */ | |
3a88cbd1 JL |
1253 | if (GET_CODE (src) != REG) |
1254 | abort (); | |
3f76745e JM |
1255 | switch (GET_CODE (XEXP (dest, 0))) |
1256 | { | |
1257 | /* With a push. */ | |
1258 | case PRE_INC: | |
1259 | case PRE_DEC: | |
1260 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
0021b564 | 1261 | if (GET_CODE (XEXP (dest, 0)) == PRE_INC) |
3f76745e JM |
1262 | offset = -offset; |
1263 | ||
3a88cbd1 JL |
1264 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM |
1265 | || cfa_store_reg != STACK_POINTER_REGNUM) | |
1266 | abort (); | |
3f76745e JM |
1267 | cfa_store_offset += offset; |
1268 | if (cfa_reg == STACK_POINTER_REGNUM) | |
1269 | cfa_offset = cfa_store_offset; | |
1270 | ||
1271 | offset = -cfa_store_offset; | |
1272 | break; | |
1273 | ||
1274 | /* With an offset. */ | |
1275 | case PLUS: | |
1276 | case MINUS: | |
1277 | offset = INTVAL (XEXP (XEXP (dest, 0), 1)); | |
1278 | if (GET_CODE (src) == MINUS) | |
1279 | offset = -offset; | |
1280 | ||
3a88cbd1 JL |
1281 | if (cfa_store_reg != REGNO (XEXP (XEXP (dest, 0), 0))) |
1282 | abort (); | |
3f76745e JM |
1283 | offset -= cfa_store_offset; |
1284 | break; | |
1285 | ||
1286 | default: | |
1287 | abort (); | |
1288 | } | |
1289 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1290 | dwarf2out_reg_save (label, REGNO (src), offset); | |
1291 | break; | |
1292 | ||
1293 | default: | |
1294 | abort (); | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | /* Return the size of an unsigned LEB128 quantity. */ | |
1299 | ||
1300 | static inline unsigned long | |
1301 | size_of_uleb128 (value) | |
1302 | register unsigned long value; | |
1303 | { | |
1304 | register unsigned long size = 0; | |
1305 | register unsigned byte; | |
1306 | ||
1307 | do | |
1308 | { | |
1309 | byte = (value & 0x7f); | |
1310 | value >>= 7; | |
1311 | size += 1; | |
1312 | } | |
1313 | while (value != 0); | |
1314 | ||
1315 | return size; | |
1316 | } | |
1317 | ||
1318 | /* Return the size of a signed LEB128 quantity. */ | |
1319 | ||
1320 | static inline unsigned long | |
1321 | size_of_sleb128 (value) | |
1322 | register long value; | |
1323 | { | |
1324 | register unsigned long size = 0; | |
1325 | register unsigned byte; | |
1326 | ||
1327 | do | |
1328 | { | |
1329 | byte = (value & 0x7f); | |
1330 | value >>= 7; | |
1331 | size += 1; | |
1332 | } | |
1333 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
1334 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1335 | ||
1336 | return size; | |
1337 | } | |
1338 | ||
3f76745e JM |
1339 | /* Output an unsigned LEB128 quantity. */ |
1340 | ||
1341 | static void | |
1342 | output_uleb128 (value) | |
1343 | register unsigned long value; | |
1344 | { | |
1345 | unsigned long save_value = value; | |
1346 | ||
1347 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
1348 | do | |
1349 | { | |
1350 | register unsigned byte = (value & 0x7f); | |
1351 | value >>= 7; | |
1352 | if (value != 0) | |
1353 | /* More bytes to follow. */ | |
1354 | byte |= 0x80; | |
1355 | ||
1356 | fprintf (asm_out_file, "0x%x", byte); | |
1357 | if (value != 0) | |
1358 | fprintf (asm_out_file, ","); | |
1359 | } | |
1360 | while (value != 0); | |
1361 | ||
c5cec899 | 1362 | if (flag_debug_asm) |
3f76745e JM |
1363 | fprintf (asm_out_file, "\t%s ULEB128 0x%x", ASM_COMMENT_START, save_value); |
1364 | } | |
1365 | ||
1366 | /* Output an signed LEB128 quantity. */ | |
1367 | ||
1368 | static void | |
1369 | output_sleb128 (value) | |
1370 | register long value; | |
1371 | { | |
1372 | register int more; | |
1373 | register unsigned byte; | |
1374 | long save_value = value; | |
1375 | ||
1376 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
1377 | do | |
1378 | { | |
1379 | byte = (value & 0x7f); | |
1380 | /* arithmetic shift */ | |
1381 | value >>= 7; | |
1382 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
1383 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1384 | if (more) | |
1385 | byte |= 0x80; | |
1386 | ||
1387 | fprintf (asm_out_file, "0x%x", byte); | |
1388 | if (more) | |
1389 | fprintf (asm_out_file, ","); | |
1390 | } | |
1391 | ||
1392 | while (more); | |
c5cec899 | 1393 | if (flag_debug_asm) |
3f76745e JM |
1394 | fprintf (asm_out_file, "\t%s SLEB128 %d", ASM_COMMENT_START, save_value); |
1395 | } | |
1396 | ||
1397 | /* Output a Call Frame Information opcode and its operand(s). */ | |
1398 | ||
1399 | static void | |
1400 | output_cfi (cfi, fde) | |
1401 | register dw_cfi_ref cfi; | |
1402 | register dw_fde_ref fde; | |
1403 | { | |
1404 | if (cfi->dw_cfi_opc == DW_CFA_advance_loc) | |
1405 | { | |
1406 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1407 | cfi->dw_cfi_opc | |
1408 | | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)); | |
c5cec899 | 1409 | if (flag_debug_asm) |
3f76745e JM |
1410 | fprintf (asm_out_file, "\t%s DW_CFA_advance_loc 0x%x", |
1411 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1412 | fputc ('\n', asm_out_file); | |
1413 | } | |
1414 | ||
1415 | else if (cfi->dw_cfi_opc == DW_CFA_offset) | |
1416 | { | |
1417 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1418 | cfi->dw_cfi_opc | |
1419 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1420 | if (flag_debug_asm) |
3f76745e JM |
1421 | fprintf (asm_out_file, "\t%s DW_CFA_offset, column 0x%x", |
1422 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1423 | ||
1424 | fputc ('\n', asm_out_file); | |
1425 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1426 | fputc ('\n', asm_out_file); | |
1427 | } | |
1428 | else if (cfi->dw_cfi_opc == DW_CFA_restore) | |
1429 | { | |
1430 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1431 | cfi->dw_cfi_opc | |
1432 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1433 | if (flag_debug_asm) |
3f76745e JM |
1434 | fprintf (asm_out_file, "\t%s DW_CFA_restore, column 0x%x", |
1435 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1436 | ||
1437 | fputc ('\n', asm_out_file); | |
1438 | } | |
1439 | else | |
1440 | { | |
1441 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, cfi->dw_cfi_opc); | |
c5cec899 | 1442 | if (flag_debug_asm) |
3f76745e JM |
1443 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
1444 | dwarf_cfi_name (cfi->dw_cfi_opc)); | |
1445 | ||
1446 | fputc ('\n', asm_out_file); | |
1447 | switch (cfi->dw_cfi_opc) | |
1448 | { | |
1449 | case DW_CFA_set_loc: | |
1450 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, cfi->dw_cfi_oprnd1.dw_cfi_addr); | |
1451 | fputc ('\n', asm_out_file); | |
1452 | break; | |
1453 | case DW_CFA_advance_loc1: | |
1454 | /* TODO: not currently implemented. */ | |
1455 | abort (); | |
1456 | break; | |
1457 | case DW_CFA_advance_loc2: | |
1458 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, | |
1459 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1460 | fde->dw_fde_current_label); | |
1461 | fputc ('\n', asm_out_file); | |
1462 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1463 | break; | |
1464 | case DW_CFA_advance_loc4: | |
1465 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, | |
1466 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1467 | fde->dw_fde_current_label); | |
1468 | fputc ('\n', asm_out_file); | |
1469 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1470 | break; | |
1471 | #ifdef MIPS_DEBUGGING_INFO | |
1472 | case DW_CFA_MIPS_advance_loc8: | |
1473 | /* TODO: not currently implemented. */ | |
1474 | abort (); | |
1475 | break; | |
1476 | #endif | |
1477 | case DW_CFA_offset_extended: | |
1478 | case DW_CFA_def_cfa: | |
1479 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1480 | fputc ('\n', asm_out_file); | |
1481 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1482 | fputc ('\n', asm_out_file); | |
1483 | break; | |
1484 | case DW_CFA_restore_extended: | |
1485 | case DW_CFA_undefined: | |
1486 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1487 | fputc ('\n', asm_out_file); | |
1488 | break; | |
1489 | case DW_CFA_same_value: | |
1490 | case DW_CFA_def_cfa_register: | |
1491 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1492 | fputc ('\n', asm_out_file); | |
1493 | break; | |
1494 | case DW_CFA_register: | |
1495 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1496 | fputc ('\n', asm_out_file); | |
1497 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_reg_num); | |
1498 | fputc ('\n', asm_out_file); | |
1499 | break; | |
1500 | case DW_CFA_def_cfa_offset: | |
1501 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1502 | fputc ('\n', asm_out_file); | |
1503 | break; | |
c53aa195 JM |
1504 | case DW_CFA_GNU_window_save: |
1505 | break; | |
0021b564 JM |
1506 | case DW_CFA_GNU_args_size: |
1507 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1508 | fputc ('\n', asm_out_file); | |
1509 | break; | |
3f76745e JM |
1510 | default: |
1511 | break; | |
1512 | } | |
1513 | } | |
1514 | } | |
1515 | ||
0021b564 JM |
1516 | #if !defined (EH_FRAME_SECTION) |
1517 | #if defined (EH_FRAME_SECTION_ASM_OP) | |
1518 | #define EH_FRAME_SECTION() eh_frame_section(); | |
1519 | #else | |
1520 | #if defined (ASM_OUTPUT_SECTION_NAME) | |
1521 | #define EH_FRAME_SECTION() \ | |
1522 | do { \ | |
1523 | named_section (NULL_TREE, ".eh_frame", 0); \ | |
1524 | } while (0) | |
1525 | #endif | |
1526 | #endif | |
1527 | #endif | |
1528 | ||
3f76745e JM |
1529 | /* Output the call frame information used to used to record information |
1530 | that relates to calculating the frame pointer, and records the | |
1531 | location of saved registers. */ | |
1532 | ||
1533 | static void | |
1534 | output_call_frame_info (for_eh) | |
1535 | int for_eh; | |
1536 | { | |
1537 | register unsigned long i, j; | |
1538 | register dw_fde_ref fde; | |
1539 | register unsigned long fde_size; | |
1540 | register dw_cfi_ref cfi; | |
1541 | unsigned long fde_pad; | |
a6ab3aad | 1542 | char l1[20], l2[20]; |
2ed2af28 PDM |
1543 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1544 | char ld[20]; | |
1545 | #endif | |
a6ab3aad JM |
1546 | |
1547 | /* Do we want to include a pointer to the exception table? */ | |
1548 | int eh_ptr = for_eh && exception_table_p (); | |
3f76745e | 1549 | |
3f76745e | 1550 | fputc ('\n', asm_out_file); |
e9e30253 | 1551 | |
aa0c1401 JL |
1552 | /* We're going to be generating comments, so turn on app. */ |
1553 | if (flag_debug_asm) | |
1554 | app_enable (); | |
1555 | ||
3f76745e JM |
1556 | if (for_eh) |
1557 | { | |
1558 | #ifdef EH_FRAME_SECTION | |
0021b564 | 1559 | EH_FRAME_SECTION (); |
3f76745e | 1560 | #else |
496651db | 1561 | tree label = get_file_function_name ('F'); |
0021b564 | 1562 | |
3f76745e | 1563 | data_section (); |
0021b564 JM |
1564 | ASM_GLOBALIZE_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); |
1565 | ASM_OUTPUT_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); | |
3f76745e JM |
1566 | #endif |
1567 | assemble_label ("__FRAME_BEGIN__"); | |
1568 | } | |
1569 | else | |
1570 | ASM_OUTPUT_SECTION (asm_out_file, FRAME_SECTION); | |
1571 | ||
1572 | /* Output the CIE. */ | |
a6ab3aad JM |
1573 | ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh); |
1574 | ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh); | |
2ed2af28 PDM |
1575 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1576 | ASM_GENERATE_INTERNAL_LABEL (ld, CIE_LENGTH_LABEL, for_eh); | |
1577 | if (for_eh) | |
7bb9fb0e | 1578 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1579 | else |
1580 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1581 | #else | |
267c09ab JM |
1582 | if (for_eh) |
1583 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1584 | else | |
1585 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1586 | #endif |
c5cec899 | 1587 | if (flag_debug_asm) |
3f76745e JM |
1588 | fprintf (asm_out_file, "\t%s Length of Common Information Entry", |
1589 | ASM_COMMENT_START); | |
1590 | ||
1591 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1592 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1593 | ||
d84e64d4 JM |
1594 | if (for_eh) |
1595 | /* Now that the CIE pointer is PC-relative for EH, | |
1596 | use 0 to identify the CIE. */ | |
1597 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); | |
1598 | else | |
1599 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1600 | ||
c5cec899 | 1601 | if (flag_debug_asm) |
3f76745e JM |
1602 | fprintf (asm_out_file, "\t%s CIE Identifier Tag", ASM_COMMENT_START); |
1603 | ||
1604 | fputc ('\n', asm_out_file); | |
d84e64d4 | 1605 | if (! for_eh && DWARF_OFFSET_SIZE == 8) |
3f76745e JM |
1606 | { |
1607 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1608 | fputc ('\n', asm_out_file); | |
1609 | } | |
1610 | ||
1611 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_CIE_VERSION); | |
c5cec899 | 1612 | if (flag_debug_asm) |
3f76745e JM |
1613 | fprintf (asm_out_file, "\t%s CIE Version", ASM_COMMENT_START); |
1614 | ||
1615 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1616 | if (eh_ptr) |
1617 | { | |
d84e64d4 JM |
1618 | /* The CIE contains a pointer to the exception region info for the |
1619 | frame. Make the augmentation string three bytes (including the | |
1620 | trailing null) so the pointer is 4-byte aligned. The Solaris ld | |
1621 | can't handle unaligned relocs. */ | |
c5cec899 | 1622 | if (flag_debug_asm) |
8d4e65a6 JL |
1623 | { |
1624 | ASM_OUTPUT_DWARF_STRING (asm_out_file, "eh"); | |
1625 | fprintf (asm_out_file, "\t%s CIE Augmentation", ASM_COMMENT_START); | |
1626 | } | |
1627 | else | |
1628 | { | |
c2c85462 | 1629 | ASM_OUTPUT_ASCII (asm_out_file, "eh", 3); |
8d4e65a6 | 1630 | } |
d84e64d4 JM |
1631 | fputc ('\n', asm_out_file); |
1632 | ||
1633 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, "__EXCEPTION_TABLE__"); | |
1634 | if (flag_debug_asm) | |
1635 | fprintf (asm_out_file, "\t%s pointer to exception region info", | |
1636 | ASM_COMMENT_START); | |
a6ab3aad JM |
1637 | } |
1638 | else | |
1639 | { | |
1640 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 1641 | if (flag_debug_asm) |
a6ab3aad JM |
1642 | fprintf (asm_out_file, "\t%s CIE Augmentation (none)", |
1643 | ASM_COMMENT_START); | |
1644 | } | |
3f76745e JM |
1645 | |
1646 | fputc ('\n', asm_out_file); | |
1647 | output_uleb128 (1); | |
c5cec899 | 1648 | if (flag_debug_asm) |
3f76745e JM |
1649 | fprintf (asm_out_file, " (CIE Code Alignment Factor)"); |
1650 | ||
1651 | fputc ('\n', asm_out_file); | |
1652 | output_sleb128 (DWARF_CIE_DATA_ALIGNMENT); | |
c5cec899 | 1653 | if (flag_debug_asm) |
3f76745e JM |
1654 | fprintf (asm_out_file, " (CIE Data Alignment Factor)"); |
1655 | ||
1656 | fputc ('\n', asm_out_file); | |
1657 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_FRAME_RETURN_COLUMN); | |
c5cec899 | 1658 | if (flag_debug_asm) |
3f76745e JM |
1659 | fprintf (asm_out_file, "\t%s CIE RA Column", ASM_COMMENT_START); |
1660 | ||
1661 | fputc ('\n', asm_out_file); | |
1662 | ||
1663 | for (cfi = cie_cfi_head; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1664 | output_cfi (cfi, NULL); | |
1665 | ||
1666 | /* Pad the CIE out to an address sized boundary. */ | |
a6ab3aad JM |
1667 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); |
1668 | ASM_OUTPUT_LABEL (asm_out_file, l2); | |
2ed2af28 PDM |
1669 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1670 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1671 | if (flag_debug_asm) |
1672 | fprintf (asm_out_file, "\t%s CIE Length Symbol", ASM_COMMENT_START); | |
1673 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1674 | #endif |
3f76745e JM |
1675 | |
1676 | /* Loop through all of the FDE's. */ | |
1677 | for (i = 0; i < fde_table_in_use; ++i) | |
1678 | { | |
1679 | fde = &fde_table[i]; | |
3f76745e | 1680 | |
a6ab3aad JM |
1681 | ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i*2); |
1682 | ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i*2); | |
2ed2af28 PDM |
1683 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1684 | ASM_GENERATE_INTERNAL_LABEL (ld, FDE_LENGTH_LABEL, for_eh + i*2); | |
1685 | if (for_eh) | |
7bb9fb0e | 1686 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1687 | else |
1688 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1689 | #else | |
267c09ab JM |
1690 | if (for_eh) |
1691 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1692 | else | |
1693 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1694 | #endif |
c5cec899 | 1695 | if (flag_debug_asm) |
3f76745e | 1696 | fprintf (asm_out_file, "\t%s FDE Length", ASM_COMMENT_START); |
3f76745e | 1697 | fputc ('\n', asm_out_file); |
a6ab3aad JM |
1698 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1699 | ||
3f76745e | 1700 | if (for_eh) |
ede19932 | 1701 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l1, "__FRAME_BEGIN__"); |
3f76745e JM |
1702 | else |
1703 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (FRAME_SECTION)); | |
c5cec899 | 1704 | if (flag_debug_asm) |
3f76745e JM |
1705 | fprintf (asm_out_file, "\t%s FDE CIE offset", ASM_COMMENT_START); |
1706 | ||
1707 | fputc ('\n', asm_out_file); | |
1708 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, fde->dw_fde_begin); | |
c5cec899 | 1709 | if (flag_debug_asm) |
3f76745e JM |
1710 | fprintf (asm_out_file, "\t%s FDE initial location", ASM_COMMENT_START); |
1711 | ||
1712 | fputc ('\n', asm_out_file); | |
1713 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, | |
1714 | fde->dw_fde_end, fde->dw_fde_begin); | |
c5cec899 | 1715 | if (flag_debug_asm) |
3f76745e JM |
1716 | fprintf (asm_out_file, "\t%s FDE address range", ASM_COMMENT_START); |
1717 | ||
1718 | fputc ('\n', asm_out_file); | |
1719 | ||
1720 | /* Loop through the Call Frame Instructions associated with | |
1721 | this FDE. */ | |
1722 | fde->dw_fde_current_label = fde->dw_fde_begin; | |
1723 | for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1724 | output_cfi (cfi, fde); | |
1725 | ||
a6ab3aad JM |
1726 | /* Pad the FDE out to an address sized boundary. */ |
1727 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); | |
1728 | ASM_OUTPUT_LABEL (asm_out_file, l2); | |
2ed2af28 PDM |
1729 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1730 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1731 | if (flag_debug_asm) |
1732 | fprintf (asm_out_file, "\t%s FDE Length Symbol", ASM_COMMENT_START); | |
1733 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1734 | #endif |
3f76745e JM |
1735 | } |
1736 | #ifndef EH_FRAME_SECTION | |
1737 | if (for_eh) | |
1738 | { | |
1739 | /* Emit terminating zero for table. */ | |
267c09ab | 1740 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); |
3f76745e JM |
1741 | fputc ('\n', asm_out_file); |
1742 | } | |
1743 | #endif | |
a6ab3aad JM |
1744 | #ifdef MIPS_DEBUGGING_INFO |
1745 | /* Work around Irix 6 assembler bug whereby labels at the end of a section | |
1746 | get a value of 0. Putting .align 0 after the label fixes it. */ | |
1747 | ASM_OUTPUT_ALIGN (asm_out_file, 0); | |
1748 | #endif | |
aa0c1401 JL |
1749 | |
1750 | /* Turn off app to make assembly quicker. */ | |
1751 | if (flag_debug_asm) | |
1752 | app_disable (); | |
a6ab3aad JM |
1753 | } |
1754 | ||
3f76745e JM |
1755 | /* Output a marker (i.e. a label) for the beginning of a function, before |
1756 | the prologue. */ | |
1757 | ||
1758 | void | |
1759 | dwarf2out_begin_prologue () | |
1760 | { | |
1761 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
1762 | register dw_fde_ref fde; | |
1763 | ||
4f988ea2 JM |
1764 | ++current_funcdef_number; |
1765 | ||
3f76745e JM |
1766 | function_section (current_function_decl); |
1767 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL, | |
1768 | current_funcdef_number); | |
1769 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
1770 | ||
1771 | /* Expand the fde table if necessary. */ | |
1772 | if (fde_table_in_use == fde_table_allocated) | |
1773 | { | |
1774 | fde_table_allocated += FDE_TABLE_INCREMENT; | |
1775 | fde_table | |
1776 | = (dw_fde_ref) xrealloc (fde_table, | |
1777 | fde_table_allocated * sizeof (dw_fde_node)); | |
a3f97cbb | 1778 | } |
3f76745e JM |
1779 | |
1780 | /* Record the FDE associated with this function. */ | |
1781 | current_funcdef_fde = fde_table_in_use; | |
1782 | ||
1783 | /* Add the new FDE at the end of the fde_table. */ | |
1784 | fde = &fde_table[fde_table_in_use++]; | |
1785 | fde->dw_fde_begin = xstrdup (label); | |
1786 | fde->dw_fde_current_label = NULL; | |
1787 | fde->dw_fde_end = NULL; | |
1788 | fde->dw_fde_cfi = NULL; | |
0021b564 JM |
1789 | |
1790 | args_size = 0; | |
3f76745e JM |
1791 | } |
1792 | ||
1793 | /* Output a marker (i.e. a label) for the absolute end of the generated code | |
1794 | for a function definition. This gets called *after* the epilogue code has | |
1795 | been generated. */ | |
1796 | ||
1797 | void | |
1798 | dwarf2out_end_epilogue () | |
1799 | { | |
1800 | dw_fde_ref fde; | |
1801 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
1802 | ||
1803 | /* Output a label to mark the endpoint of the code generated for this | |
1804 | function. */ | |
1805 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_END_LABEL, current_funcdef_number); | |
1806 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
1807 | fde = &fde_table[fde_table_in_use - 1]; | |
1808 | fde->dw_fde_end = xstrdup (label); | |
3f76745e JM |
1809 | } |
1810 | ||
1811 | void | |
1812 | dwarf2out_frame_init () | |
1813 | { | |
1814 | /* Allocate the initial hunk of the fde_table. */ | |
1815 | fde_table | |
1816 | = (dw_fde_ref) xmalloc (FDE_TABLE_INCREMENT * sizeof (dw_fde_node)); | |
1817 | bzero ((char *) fde_table, FDE_TABLE_INCREMENT * sizeof (dw_fde_node)); | |
1818 | fde_table_allocated = FDE_TABLE_INCREMENT; | |
1819 | fde_table_in_use = 0; | |
1820 | ||
1821 | /* Generate the CFA instructions common to all FDE's. Do it now for the | |
1822 | sake of lookup_cfa. */ | |
1823 | ||
a6ab3aad JM |
1824 | #ifdef DWARF2_UNWIND_INFO |
1825 | /* On entry, the Canonical Frame Address is at SP. */ | |
1826 | dwarf2out_def_cfa (NULL, STACK_POINTER_REGNUM, INCOMING_FRAME_SP_OFFSET); | |
3f76745e JM |
1827 | initial_return_save (INCOMING_RETURN_ADDR_RTX); |
1828 | #endif | |
1829 | } | |
1830 | ||
1831 | void | |
1832 | dwarf2out_frame_finish () | |
1833 | { | |
3f76745e | 1834 | /* Output call frame information. */ |
a6ab3aad | 1835 | #ifdef MIPS_DEBUGGING_INFO |
3f76745e JM |
1836 | if (write_symbols == DWARF2_DEBUG) |
1837 | output_call_frame_info (0); | |
1838 | if (flag_exceptions && ! exceptions_via_longjmp) | |
1839 | output_call_frame_info (1); | |
a6ab3aad JM |
1840 | #else |
1841 | if (write_symbols == DWARF2_DEBUG | |
1842 | || (flag_exceptions && ! exceptions_via_longjmp)) | |
1843 | output_call_frame_info (1); | |
1844 | #endif | |
3f76745e JM |
1845 | } |
1846 | ||
1847 | #endif /* .debug_frame support */ | |
1848 | ||
1849 | /* And now, the support for symbolic debugging information. */ | |
1850 | #ifdef DWARF2_DEBUGGING_INFO | |
1851 | ||
1852 | extern char *getpwd (); | |
1853 | ||
1854 | /* NOTE: In the comments in this file, many references are made to | |
1855 | "Debugging Information Entries". This term is abbreviated as `DIE' | |
1856 | throughout the remainder of this file. */ | |
1857 | ||
1858 | /* An internal representation of the DWARF output is built, and then | |
1859 | walked to generate the DWARF debugging info. The walk of the internal | |
1860 | representation is done after the entire program has been compiled. | |
1861 | The types below are used to describe the internal representation. */ | |
1862 | ||
1863 | /* Each DIE may have a series of attribute/value pairs. Values | |
1864 | can take on several forms. The forms that are used in this | |
1865 | implementation are listed below. */ | |
1866 | ||
1867 | typedef enum | |
1868 | { | |
1869 | dw_val_class_addr, | |
1870 | dw_val_class_loc, | |
1871 | dw_val_class_const, | |
1872 | dw_val_class_unsigned_const, | |
1873 | dw_val_class_long_long, | |
1874 | dw_val_class_float, | |
1875 | dw_val_class_flag, | |
1876 | dw_val_class_die_ref, | |
1877 | dw_val_class_fde_ref, | |
1878 | dw_val_class_lbl_id, | |
1879 | dw_val_class_section_offset, | |
1880 | dw_val_class_str | |
a3f97cbb | 1881 | } |
3f76745e | 1882 | dw_val_class; |
a3f97cbb | 1883 | |
3f76745e JM |
1884 | /* Various DIE's use offsets relative to the beginning of the |
1885 | .debug_info section to refer to each other. */ | |
71dfc51f | 1886 | |
3f76745e JM |
1887 | typedef long int dw_offset; |
1888 | ||
1889 | /* Define typedefs here to avoid circular dependencies. */ | |
1890 | ||
1891 | typedef struct die_struct *dw_die_ref; | |
1892 | typedef struct dw_attr_struct *dw_attr_ref; | |
1893 | typedef struct dw_val_struct *dw_val_ref; | |
1894 | typedef struct dw_line_info_struct *dw_line_info_ref; | |
1895 | typedef struct dw_separate_line_info_struct *dw_separate_line_info_ref; | |
1896 | typedef struct dw_loc_descr_struct *dw_loc_descr_ref; | |
1897 | typedef struct pubname_struct *pubname_ref; | |
1898 | typedef dw_die_ref *arange_ref; | |
1899 | ||
1900 | /* Describe a double word constant value. */ | |
1901 | ||
1902 | typedef struct dw_long_long_struct | |
a3f97cbb | 1903 | { |
3f76745e JM |
1904 | unsigned long hi; |
1905 | unsigned long low; | |
1906 | } | |
1907 | dw_long_long_const; | |
1908 | ||
1909 | /* Describe a floating point constant value. */ | |
1910 | ||
1911 | typedef struct dw_fp_struct | |
1912 | { | |
1913 | long *array; | |
1914 | unsigned length; | |
1915 | } | |
1916 | dw_float_const; | |
1917 | ||
1918 | /* Each entry in the line_info_table maintains the file and | |
1919 | line nuber associated with the label generated for that | |
1920 | entry. The label gives the PC value associated with | |
1921 | the line number entry. */ | |
1922 | ||
1923 | typedef struct dw_line_info_struct | |
1924 | { | |
1925 | unsigned long dw_file_num; | |
1926 | unsigned long dw_line_num; | |
1927 | } | |
1928 | dw_line_info_entry; | |
1929 | ||
1930 | /* Line information for functions in separate sections; each one gets its | |
1931 | own sequence. */ | |
1932 | typedef struct dw_separate_line_info_struct | |
1933 | { | |
1934 | unsigned long dw_file_num; | |
1935 | unsigned long dw_line_num; | |
1936 | unsigned long function; | |
1937 | } | |
1938 | dw_separate_line_info_entry; | |
1939 | ||
1940 | /* The dw_val_node describes an attibute's value, as it is | |
1941 | represented internally. */ | |
1942 | ||
1943 | typedef struct dw_val_struct | |
1944 | { | |
1945 | dw_val_class val_class; | |
1946 | union | |
a3f97cbb | 1947 | { |
3f76745e JM |
1948 | char *val_addr; |
1949 | dw_loc_descr_ref val_loc; | |
1950 | long int val_int; | |
1951 | long unsigned val_unsigned; | |
1952 | dw_long_long_const val_long_long; | |
1953 | dw_float_const val_float; | |
1954 | dw_die_ref val_die_ref; | |
1955 | unsigned val_fde_index; | |
1956 | char *val_str; | |
1957 | char *val_lbl_id; | |
1958 | char *val_section; | |
1959 | unsigned char val_flag; | |
a3f97cbb | 1960 | } |
3f76745e JM |
1961 | v; |
1962 | } | |
1963 | dw_val_node; | |
1964 | ||
1965 | /* Locations in memory are described using a sequence of stack machine | |
1966 | operations. */ | |
1967 | ||
1968 | typedef struct dw_loc_descr_struct | |
1969 | { | |
1970 | dw_loc_descr_ref dw_loc_next; | |
1971 | enum dwarf_location_atom dw_loc_opc; | |
1972 | dw_val_node dw_loc_oprnd1; | |
1973 | dw_val_node dw_loc_oprnd2; | |
1974 | } | |
1975 | dw_loc_descr_node; | |
1976 | ||
1977 | /* Each DIE attribute has a field specifying the attribute kind, | |
1978 | a link to the next attribute in the chain, and an attribute value. | |
1979 | Attributes are typically linked below the DIE they modify. */ | |
1980 | ||
1981 | typedef struct dw_attr_struct | |
1982 | { | |
1983 | enum dwarf_attribute dw_attr; | |
1984 | dw_attr_ref dw_attr_next; | |
1985 | dw_val_node dw_attr_val; | |
1986 | } | |
1987 | dw_attr_node; | |
1988 | ||
1989 | /* The Debugging Information Entry (DIE) structure */ | |
1990 | ||
1991 | typedef struct die_struct | |
1992 | { | |
1993 | enum dwarf_tag die_tag; | |
1994 | dw_attr_ref die_attr; | |
1995 | dw_attr_ref die_attr_last; | |
1996 | dw_die_ref die_parent; | |
1997 | dw_die_ref die_child; | |
1998 | dw_die_ref die_child_last; | |
1999 | dw_die_ref die_sib; | |
2000 | dw_offset die_offset; | |
2001 | unsigned long die_abbrev; | |
a3f97cbb | 2002 | } |
3f76745e JM |
2003 | die_node; |
2004 | ||
2005 | /* The pubname structure */ | |
2006 | ||
2007 | typedef struct pubname_struct | |
2008 | { | |
2009 | dw_die_ref die; | |
2010 | char * name; | |
2011 | } | |
2012 | pubname_entry; | |
2013 | ||
ef76d03b JW |
2014 | /* The limbo die list structure. */ |
2015 | typedef struct limbo_die_struct | |
2016 | { | |
2017 | dw_die_ref die; | |
2018 | struct limbo_die_struct *next; | |
2019 | } | |
2020 | limbo_die_node; | |
2021 | ||
3f76745e JM |
2022 | /* How to start an assembler comment. */ |
2023 | #ifndef ASM_COMMENT_START | |
2024 | #define ASM_COMMENT_START ";#" | |
2025 | #endif | |
2026 | ||
2027 | /* Define a macro which returns non-zero for a TYPE_DECL which was | |
2028 | implicitly generated for a tagged type. | |
2029 | ||
2030 | Note that unlike the gcc front end (which generates a NULL named | |
2031 | TYPE_DECL node for each complete tagged type, each array type, and | |
2032 | each function type node created) the g++ front end generates a | |
2033 | _named_ TYPE_DECL node for each tagged type node created. | |
2034 | These TYPE_DECLs have DECL_ARTIFICIAL set, so we know not to | |
2035 | generate a DW_TAG_typedef DIE for them. */ | |
2036 | ||
2037 | #define TYPE_DECL_IS_STUB(decl) \ | |
2038 | (DECL_NAME (decl) == NULL_TREE \ | |
2039 | || (DECL_ARTIFICIAL (decl) \ | |
2040 | && is_tagged_type (TREE_TYPE (decl)) \ | |
ef76d03b JW |
2041 | && ((decl == TYPE_STUB_DECL (TREE_TYPE (decl))) \ |
2042 | /* This is necessary for stub decls that \ | |
2043 | appear in nested inline functions. */ \ | |
2044 | || (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE \ | |
2045 | && (decl_ultimate_origin (decl) \ | |
2046 | == TYPE_STUB_DECL (TREE_TYPE (decl))))))) | |
3f76745e JM |
2047 | |
2048 | /* Information concerning the compilation unit's programming | |
2049 | language, and compiler version. */ | |
2050 | ||
2051 | extern int flag_traditional; | |
2052 | extern char *version_string; | |
2053 | extern char *language_string; | |
2054 | ||
2055 | /* Fixed size portion of the DWARF compilation unit header. */ | |
2056 | #define DWARF_COMPILE_UNIT_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 3) | |
2057 | ||
2058 | /* Fixed size portion of debugging line information prolog. */ | |
2059 | #define DWARF_LINE_PROLOG_HEADER_SIZE 5 | |
2060 | ||
2061 | /* Fixed size portion of public names info. */ | |
2062 | #define DWARF_PUBNAMES_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2) | |
2063 | ||
2064 | /* Fixed size portion of the address range info. */ | |
2065 | #define DWARF_ARANGES_HEADER_SIZE \ | |
2066 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, PTR_SIZE * 2) - DWARF_OFFSET_SIZE) | |
2067 | ||
2068 | /* Define the architecture-dependent minimum instruction length (in bytes). | |
2069 | In this implementation of DWARF, this field is used for information | |
2070 | purposes only. Since GCC generates assembly language, we have | |
2071 | no a priori knowledge of how many instruction bytes are generated | |
2072 | for each source line, and therefore can use only the DW_LNE_set_address | |
2073 | and DW_LNS_fixed_advance_pc line information commands. */ | |
2074 | ||
2075 | #ifndef DWARF_LINE_MIN_INSTR_LENGTH | |
2076 | #define DWARF_LINE_MIN_INSTR_LENGTH 4 | |
2077 | #endif | |
2078 | ||
2079 | /* Minimum line offset in a special line info. opcode. | |
2080 | This value was chosen to give a reasonable range of values. */ | |
2081 | #define DWARF_LINE_BASE -10 | |
2082 | ||
2083 | /* First special line opcde - leave room for the standard opcodes. */ | |
2084 | #define DWARF_LINE_OPCODE_BASE 10 | |
2085 | ||
2086 | /* Range of line offsets in a special line info. opcode. */ | |
2087 | #define DWARF_LINE_RANGE (254-DWARF_LINE_OPCODE_BASE+1) | |
2088 | ||
2089 | /* Flag that indicates the initial value of the is_stmt_start flag. | |
2090 | In the present implementation, we do not mark any lines as | |
2091 | the beginning of a source statement, because that information | |
2092 | is not made available by the GCC front-end. */ | |
2093 | #define DWARF_LINE_DEFAULT_IS_STMT_START 1 | |
2094 | ||
2095 | /* This location is used by calc_die_sizes() to keep track | |
2096 | the offset of each DIE within the .debug_info section. */ | |
2097 | static unsigned long next_die_offset; | |
2098 | ||
2099 | /* Record the root of the DIE's built for the current compilation unit. */ | |
2100 | static dw_die_ref comp_unit_die; | |
2101 | ||
ef76d03b JW |
2102 | /* A list of DIEs with a NULL parent waiting to be relocated. */ |
2103 | static limbo_die_node *limbo_die_list = 0; | |
3f76745e JM |
2104 | |
2105 | /* Pointer to an array of filenames referenced by this compilation unit. */ | |
2106 | static char **file_table; | |
2107 | ||
2108 | /* Total number of entries in the table (i.e. array) pointed to by | |
2109 | `file_table'. This is the *total* and includes both used and unused | |
2110 | slots. */ | |
2111 | static unsigned file_table_allocated; | |
a3f97cbb | 2112 | |
3f76745e JM |
2113 | /* Number of entries in the file_table which are actually in use. */ |
2114 | static unsigned file_table_in_use; | |
71dfc51f | 2115 | |
3f76745e JM |
2116 | /* Size (in elements) of increments by which we may expand the filename |
2117 | table. */ | |
2118 | #define FILE_TABLE_INCREMENT 64 | |
71dfc51f | 2119 | |
3f76745e JM |
2120 | /* Local pointer to the name of the main input file. Initialized in |
2121 | dwarf2out_init. */ | |
2122 | static char *primary_filename; | |
a3f97cbb | 2123 | |
3f76745e JM |
2124 | /* For Dwarf output, we must assign lexical-blocks id numbers in the order in |
2125 | which their beginnings are encountered. We output Dwarf debugging info | |
2126 | that refers to the beginnings and ends of the ranges of code for each | |
2127 | lexical block. The labels themselves are generated in final.c, which | |
2128 | assigns numbers to the blocks in the same way. */ | |
2129 | static unsigned next_block_number = 2; | |
a3f97cbb | 2130 | |
3f76745e JM |
2131 | /* A pointer to the base of a table of references to DIE's that describe |
2132 | declarations. The table is indexed by DECL_UID() which is a unique | |
2133 | number, indentifying each decl. */ | |
2134 | static dw_die_ref *decl_die_table; | |
71dfc51f | 2135 | |
3f76745e JM |
2136 | /* Number of elements currently allocated for the decl_die_table. */ |
2137 | static unsigned decl_die_table_allocated; | |
a3f97cbb | 2138 | |
3f76745e JM |
2139 | /* Number of elements in decl_die_table currently in use. */ |
2140 | static unsigned decl_die_table_in_use; | |
71dfc51f | 2141 | |
3f76745e JM |
2142 | /* Size (in elements) of increments by which we may expand the |
2143 | decl_die_table. */ | |
2144 | #define DECL_DIE_TABLE_INCREMENT 256 | |
a3f97cbb | 2145 | |
3f76745e JM |
2146 | /* A pointer to the base of a table of references to declaration |
2147 | scopes. This table is a display which tracks the nesting | |
2148 | of declaration scopes at the current scope and containing | |
2149 | scopes. This table is used to find the proper place to | |
2150 | define type declaration DIE's. */ | |
2151 | static tree *decl_scope_table; | |
a3f97cbb | 2152 | |
3f76745e JM |
2153 | /* Number of elements currently allocated for the decl_scope_table. */ |
2154 | static unsigned decl_scope_table_allocated; | |
71dfc51f | 2155 | |
3f76745e JM |
2156 | /* Current level of nesting of declataion scopes. */ |
2157 | static unsigned decl_scope_depth; | |
bdb669cb | 2158 | |
3f76745e JM |
2159 | /* Size (in elements) of increments by which we may expand the |
2160 | decl_scope_table. */ | |
2161 | #define DECL_SCOPE_TABLE_INCREMENT 64 | |
bdb669cb | 2162 | |
3f76745e JM |
2163 | /* A pointer to the base of a list of references to DIE's that |
2164 | are uniquely identified by their tag, presence/absence of | |
2165 | children DIE's, and list of attribute/value pairs. */ | |
2166 | static dw_die_ref *abbrev_die_table; | |
71dfc51f | 2167 | |
3f76745e JM |
2168 | /* Number of elements currently allocated for abbrev_die_table. */ |
2169 | static unsigned abbrev_die_table_allocated; | |
bdb669cb | 2170 | |
3f76745e JM |
2171 | /* Number of elements in type_die_table currently in use. */ |
2172 | static unsigned abbrev_die_table_in_use; | |
bdb669cb | 2173 | |
3f76745e JM |
2174 | /* Size (in elements) of increments by which we may expand the |
2175 | abbrev_die_table. */ | |
2176 | #define ABBREV_DIE_TABLE_INCREMENT 256 | |
71dfc51f | 2177 | |
3f76745e JM |
2178 | /* A pointer to the base of a table that contains line information |
2179 | for each source code line in .text in the compilation unit. */ | |
2180 | static dw_line_info_ref line_info_table; | |
a3f97cbb | 2181 | |
3f76745e JM |
2182 | /* Number of elements currently allocated for line_info_table. */ |
2183 | static unsigned line_info_table_allocated; | |
71dfc51f | 2184 | |
3f76745e JM |
2185 | /* Number of elements in separate_line_info_table currently in use. */ |
2186 | static unsigned separate_line_info_table_in_use; | |
71dfc51f | 2187 | |
3f76745e JM |
2188 | /* A pointer to the base of a table that contains line information |
2189 | for each source code line outside of .text in the compilation unit. */ | |
2190 | static dw_separate_line_info_ref separate_line_info_table; | |
a3f97cbb | 2191 | |
3f76745e JM |
2192 | /* Number of elements currently allocated for separate_line_info_table. */ |
2193 | static unsigned separate_line_info_table_allocated; | |
71dfc51f | 2194 | |
3f76745e JM |
2195 | /* Number of elements in line_info_table currently in use. */ |
2196 | static unsigned line_info_table_in_use; | |
71dfc51f | 2197 | |
3f76745e JM |
2198 | /* Size (in elements) of increments by which we may expand the |
2199 | line_info_table. */ | |
2200 | #define LINE_INFO_TABLE_INCREMENT 1024 | |
a3f97cbb | 2201 | |
3f76745e JM |
2202 | /* A pointer to the base of a table that contains a list of publicly |
2203 | accessible names. */ | |
2204 | static pubname_ref pubname_table; | |
71dfc51f | 2205 | |
3f76745e JM |
2206 | /* Number of elements currently allocated for pubname_table. */ |
2207 | static unsigned pubname_table_allocated; | |
2208 | ||
2209 | /* Number of elements in pubname_table currently in use. */ | |
2210 | static unsigned pubname_table_in_use; | |
2211 | ||
2212 | /* Size (in elements) of increments by which we may expand the | |
2213 | pubname_table. */ | |
2214 | #define PUBNAME_TABLE_INCREMENT 64 | |
2215 | ||
2216 | /* A pointer to the base of a table that contains a list of publicly | |
2217 | accessible names. */ | |
2218 | static arange_ref arange_table; | |
71dfc51f | 2219 | |
3f76745e JM |
2220 | /* Number of elements currently allocated for arange_table. */ |
2221 | static unsigned arange_table_allocated; | |
a3f97cbb | 2222 | |
3f76745e JM |
2223 | /* Number of elements in arange_table currently in use. */ |
2224 | static unsigned arange_table_in_use; | |
71dfc51f | 2225 | |
3f76745e JM |
2226 | /* Size (in elements) of increments by which we may expand the |
2227 | arange_table. */ | |
2228 | #define ARANGE_TABLE_INCREMENT 64 | |
71dfc51f | 2229 | |
3f76745e JM |
2230 | /* A pointer to the base of a list of pending types which we haven't |
2231 | generated DIEs for yet, but which we will have to come back to | |
2232 | later on. */ | |
469ac993 | 2233 | |
3f76745e | 2234 | static tree *pending_types_list; |
71dfc51f | 2235 | |
3f76745e JM |
2236 | /* Number of elements currently allocated for the pending_types_list. */ |
2237 | static unsigned pending_types_allocated; | |
71dfc51f | 2238 | |
3f76745e JM |
2239 | /* Number of elements of pending_types_list currently in use. */ |
2240 | static unsigned pending_types; | |
a3f97cbb | 2241 | |
3f76745e JM |
2242 | /* Size (in elements) of increments by which we may expand the pending |
2243 | types list. Actually, a single hunk of space of this size should | |
2244 | be enough for most typical programs. */ | |
2245 | #define PENDING_TYPES_INCREMENT 64 | |
71dfc51f | 2246 | |
3f76745e JM |
2247 | /* Record whether the function being analyzed contains inlined functions. */ |
2248 | static int current_function_has_inlines; | |
2249 | static int comp_unit_has_inlines; | |
71dfc51f | 2250 | |
3f76745e JM |
2251 | /* A pointer to the ..._DECL node which we have most recently been working |
2252 | on. We keep this around just in case something about it looks screwy and | |
2253 | we want to tell the user what the source coordinates for the actual | |
2254 | declaration are. */ | |
2255 | static tree dwarf_last_decl; | |
a3f97cbb | 2256 | |
3f76745e | 2257 | /* Forward declarations for functions defined in this file. */ |
71dfc51f | 2258 | |
3f76745e JM |
2259 | static void addr_const_to_string PROTO((char *, rtx)); |
2260 | static char *addr_to_string PROTO((rtx)); | |
2261 | static int is_pseudo_reg PROTO((rtx)); | |
2262 | static tree type_main_variant PROTO((tree)); | |
2263 | static int is_tagged_type PROTO((tree)); | |
2264 | static char *dwarf_tag_name PROTO((unsigned)); | |
2265 | static char *dwarf_attr_name PROTO((unsigned)); | |
2266 | static char *dwarf_form_name PROTO((unsigned)); | |
2267 | static char *dwarf_stack_op_name PROTO((unsigned)); | |
2268 | static char *dwarf_type_encoding_name PROTO((unsigned)); | |
2269 | static tree decl_ultimate_origin PROTO((tree)); | |
2270 | static tree block_ultimate_origin PROTO((tree)); | |
2271 | static tree decl_class_context PROTO((tree)); | |
2272 | static void add_dwarf_attr PROTO((dw_die_ref, dw_attr_ref)); | |
2273 | static void add_AT_flag PROTO((dw_die_ref, | |
2274 | enum dwarf_attribute, | |
2275 | unsigned)); | |
2276 | static void add_AT_int PROTO((dw_die_ref, | |
2277 | enum dwarf_attribute, long)); | |
2278 | static void add_AT_unsigned PROTO((dw_die_ref, | |
2279 | enum dwarf_attribute, | |
2280 | unsigned long)); | |
2281 | static void add_AT_long_long PROTO((dw_die_ref, | |
2282 | enum dwarf_attribute, | |
2283 | unsigned long, unsigned long)); | |
2284 | static void add_AT_float PROTO((dw_die_ref, | |
2285 | enum dwarf_attribute, | |
2286 | unsigned, long *)); | |
2287 | static void add_AT_string PROTO((dw_die_ref, | |
2288 | enum dwarf_attribute, char *)); | |
2289 | static void add_AT_die_ref PROTO((dw_die_ref, | |
2290 | enum dwarf_attribute, | |
2291 | dw_die_ref)); | |
2292 | static void add_AT_fde_ref PROTO((dw_die_ref, | |
2293 | enum dwarf_attribute, | |
2294 | unsigned)); | |
2295 | static void add_AT_loc PROTO((dw_die_ref, | |
2296 | enum dwarf_attribute, | |
2297 | dw_loc_descr_ref)); | |
2298 | static void add_AT_addr PROTO((dw_die_ref, | |
2299 | enum dwarf_attribute, char *)); | |
2300 | static void add_AT_lbl_id PROTO((dw_die_ref, | |
2301 | enum dwarf_attribute, char *)); | |
2302 | static void add_AT_setion_offset PROTO((dw_die_ref, | |
2303 | enum dwarf_attribute, char *)); | |
2304 | static int is_extern_subr_die PROTO((dw_die_ref)); | |
2305 | static dw_attr_ref get_AT PROTO((dw_die_ref, | |
2306 | enum dwarf_attribute)); | |
2307 | static char *get_AT_low_pc PROTO((dw_die_ref)); | |
2308 | static char *get_AT_hi_pc PROTO((dw_die_ref)); | |
2309 | static char *get_AT_string PROTO((dw_die_ref, | |
2310 | enum dwarf_attribute)); | |
2311 | static int get_AT_flag PROTO((dw_die_ref, | |
2312 | enum dwarf_attribute)); | |
2313 | static unsigned get_AT_unsigned PROTO((dw_die_ref, | |
2314 | enum dwarf_attribute)); | |
2315 | static int is_c_family PROTO((void)); | |
2316 | static int is_fortran PROTO((void)); | |
2317 | static void remove_AT PROTO((dw_die_ref, | |
2318 | enum dwarf_attribute)); | |
2319 | static void remove_children PROTO((dw_die_ref)); | |
2320 | static void add_child_die PROTO((dw_die_ref, dw_die_ref)); | |
2321 | static dw_die_ref new_die PROTO((enum dwarf_tag, dw_die_ref)); | |
2322 | static dw_die_ref lookup_type_die PROTO((tree)); | |
2323 | static void equate_type_number_to_die PROTO((tree, dw_die_ref)); | |
2324 | static dw_die_ref lookup_decl_die PROTO((tree)); | |
2325 | static void equate_decl_number_to_die PROTO((tree, dw_die_ref)); | |
2326 | static dw_loc_descr_ref new_loc_descr PROTO((enum dwarf_location_atom, | |
2327 | unsigned long, unsigned long)); | |
2328 | static void add_loc_descr PROTO((dw_loc_descr_ref *, | |
2329 | dw_loc_descr_ref)); | |
2330 | static void print_spaces PROTO((FILE *)); | |
2331 | static void print_die PROTO((dw_die_ref, FILE *)); | |
2332 | static void print_dwarf_line_table PROTO((FILE *)); | |
2333 | static void add_sibling_atttributes PROTO((dw_die_ref)); | |
2334 | static void build_abbrev_table PROTO((dw_die_ref)); | |
2335 | static unsigned long size_of_string PROTO((char *)); | |
2336 | static unsigned long size_of_loc_descr PROTO((dw_loc_descr_ref)); | |
2337 | static unsigned long size_of_locs PROTO((dw_loc_descr_ref)); | |
2338 | static int constant_size PROTO((long unsigned)); | |
2339 | static unsigned long size_of_die PROTO((dw_die_ref)); | |
2340 | static void calc_die_sizes PROTO((dw_die_ref)); | |
2341 | static unsigned long size_of_prolog PROTO((void)); | |
2342 | static unsigned long size_of_line_info PROTO((void)); | |
2343 | static unsigned long size_of_pubnames PROTO((void)); | |
2344 | static unsigned long size_of_aranges PROTO((void)); | |
2345 | static enum dwarf_form value_format PROTO((dw_val_ref)); | |
2346 | static void output_value_format PROTO((dw_val_ref)); | |
2347 | static void output_abbrev_section PROTO((void)); | |
2348 | static void output_loc_operands PROTO((dw_loc_descr_ref)); | |
2349 | static unsigned long sibling_offset PROTO((dw_die_ref)); | |
2350 | static void output_die PROTO((dw_die_ref)); | |
2351 | static void output_compilation_unit_header PROTO((void)); | |
2352 | static char *dwarf2_name PROTO((tree, int)); | |
2353 | static void add_pubname PROTO((tree, dw_die_ref)); | |
2354 | static void output_pubnames PROTO((void)); | |
2355 | static void add_arrange PROTO((tree, dw_die_ref)); | |
2356 | static void output_arranges PROTO((void)); | |
2357 | static void output_line_info PROTO((void)); | |
2358 | static int is_body_block PROTO((tree)); | |
2359 | static dw_die_ref base_type_die PROTO((tree)); | |
2360 | static tree root_type PROTO((tree)); | |
2361 | static int is_base_type PROTO((tree)); | |
2362 | static dw_die_ref modified_type_die PROTO((tree, int, int, dw_die_ref)); | |
2363 | static int type_is_enum PROTO((tree)); | |
4401bf24 | 2364 | static dw_loc_descr_ref reg_loc_descriptor PROTO((rtx)); |
3f76745e JM |
2365 | static dw_loc_descr_ref based_loc_descr PROTO((unsigned, long)); |
2366 | static int is_based_loc PROTO((rtx)); | |
2367 | static dw_loc_descr_ref mem_loc_descriptor PROTO((rtx)); | |
4401bf24 | 2368 | static dw_loc_descr_ref concat_loc_descriptor PROTO((rtx, rtx)); |
3f76745e JM |
2369 | static dw_loc_descr_ref loc_descriptor PROTO((rtx)); |
2370 | static unsigned ceiling PROTO((unsigned, unsigned)); | |
2371 | static tree field_type PROTO((tree)); | |
2372 | static unsigned simple_type_align_in_bits PROTO((tree)); | |
2373 | static unsigned simple_type_size_in_bits PROTO((tree)); | |
2374 | static unsigned field_byte_offset PROTO((tree)); | |
ef76d03b JW |
2375 | static void add_AT_location_description PROTO((dw_die_ref, |
2376 | enum dwarf_attribute, rtx)); | |
3f76745e JM |
2377 | static void add_data_member_location_attribute PROTO((dw_die_ref, tree)); |
2378 | static void add_const_value_attribute PROTO((dw_die_ref, rtx)); | |
2379 | static void add_location_or_const_value_attribute PROTO((dw_die_ref, tree)); | |
2380 | static void add_name_attribute PROTO((dw_die_ref, char *)); | |
2381 | static void add_bound_info PROTO((dw_die_ref, | |
2382 | enum dwarf_attribute, tree)); | |
2383 | static void add_subscript_info PROTO((dw_die_ref, tree)); | |
2384 | static void add_byte_size_attribute PROTO((dw_die_ref, tree)); | |
2385 | static void add_bit_offset_attribute PROTO((dw_die_ref, tree)); | |
2386 | static void add_bit_size_attribute PROTO((dw_die_ref, tree)); | |
2387 | static void add_prototyped_attribute PROTO((dw_die_ref, tree)); | |
2388 | static void add_abstract_origin_attribute PROTO((dw_die_ref, tree)); | |
2389 | static void add_pure_or_virtual_attribute PROTO((dw_die_ref, tree)); | |
2390 | static void add_src_coords_attributes PROTO((dw_die_ref, tree)); | |
2391 | static void ad_name_and_src_coords_attributes PROTO((dw_die_ref, tree)); | |
2392 | static void push_decl_scope PROTO((tree)); | |
2393 | static dw_die_ref scope_die_for PROTO((tree, dw_die_ref)); | |
2394 | static void pop_decl_scope PROTO((void)); | |
2395 | static void add_type_attribute PROTO((dw_die_ref, tree, int, int, | |
2396 | dw_die_ref)); | |
2397 | static char *type_tag PROTO((tree)); | |
2398 | static tree member_declared_type PROTO((tree)); | |
2399 | static char *decl_start_label PROTO((tree)); | |
2400 | static void gen_arrqay_type_die PROTO((tree, dw_die_ref)); | |
2401 | static void gen_set_type_die PROTO((tree, dw_die_ref)); | |
2402 | static void gen_entry_point_die PROTO((tree, dw_die_ref)); | |
2403 | static void pend_type PROTO((tree)); | |
2404 | static void output_pending_types_for_scope PROTO((dw_die_ref)); | |
2405 | static void gen_inlined_enumeration_type_die PROTO((tree, dw_die_ref)); | |
2406 | static void gen_inlined_structure_type_die PROTO((tree, dw_die_ref)); | |
2407 | static void gen_inlined_union_type_die PROTO((tree, dw_die_ref)); | |
2408 | static void gen_enumeration_type_die PROTO((tree, dw_die_ref)); | |
2409 | static dw_die_ref gen_formal_parameter_die PROTO((tree, dw_die_ref)); | |
2410 | static void gen_unspecified_parameters_die PROTO((tree, dw_die_ref)); | |
2411 | static void gen_formal_types_die PROTO((tree, dw_die_ref)); | |
2412 | static void gen_subprogram_die PROTO((tree, dw_die_ref)); | |
2413 | static void gen_variable_die PROTO((tree, dw_die_ref)); | |
2414 | static void gen_label_die PROTO((tree, dw_die_ref)); | |
2415 | static void gen_lexical_block_die PROTO((tree, dw_die_ref, int)); | |
2416 | static void gen_inlined_subprogram_die PROTO((tree, dw_die_ref, int)); | |
2417 | static void gen_field_die PROTO((tree, dw_die_ref)); | |
2418 | static void gen_ptr_to_mbr_type_die PROTO((tree, dw_die_ref)); | |
2419 | static void gen_compile_unit_die PROTO((char *)); | |
2420 | static void gen_string_type_die PROTO((tree, dw_die_ref)); | |
2421 | static void gen_inheritance_die PROTO((tree, dw_die_ref)); | |
2422 | static void gen_member_die PROTO((tree, dw_die_ref)); | |
2423 | static void gen_struct_or_union_type_die PROTO((tree, dw_die_ref)); | |
2424 | static void gen_subroutine_type_die PROTO((tree, dw_die_ref)); | |
2425 | static void gen_typedef_die PROTO((tree, dw_die_ref)); | |
2426 | static void gen_type_die PROTO((tree, dw_die_ref)); | |
2427 | static void gen_tagged_type_instantiation_die PROTO((tree, dw_die_ref)); | |
2428 | static void gen_block_die PROTO((tree, dw_die_ref, int)); | |
2429 | static void decls_for_scope PROTO((tree, dw_die_ref, int)); | |
2430 | static int is_redundant_typedef PROTO((tree)); | |
2431 | static void gen_decl_die PROTO((tree, dw_die_ref)); | |
2432 | static unsigned lookup_filename PROTO((char *)); | |
71dfc51f | 2433 | |
3f76745e | 2434 | /* Section names used to hold DWARF debugging information. */ |
c53aa195 JM |
2435 | #ifndef DEBUG_INFO_SECTION |
2436 | #define DEBUG_INFO_SECTION ".debug_info" | |
3f76745e JM |
2437 | #endif |
2438 | #ifndef ABBREV_SECTION | |
2439 | #define ABBREV_SECTION ".debug_abbrev" | |
2440 | #endif | |
2441 | #ifndef ARANGES_SECTION | |
2442 | #define ARANGES_SECTION ".debug_aranges" | |
2443 | #endif | |
2444 | #ifndef DW_MACINFO_SECTION | |
2445 | #define DW_MACINFO_SECTION ".debug_macinfo" | |
2446 | #endif | |
c53aa195 JM |
2447 | #ifndef DEBUG_LINE_SECTION |
2448 | #define DEBUG_LINE_SECTION ".debug_line" | |
3f76745e JM |
2449 | #endif |
2450 | #ifndef LOC_SECTION | |
2451 | #define LOC_SECTION ".debug_loc" | |
2452 | #endif | |
2453 | #ifndef PUBNAMES_SECTION | |
2454 | #define PUBNAMES_SECTION ".debug_pubnames" | |
2455 | #endif | |
2456 | #ifndef STR_SECTION | |
2457 | #define STR_SECTION ".debug_str" | |
2458 | #endif | |
a3f97cbb | 2459 | |
3f76745e JM |
2460 | /* Standerd ELF section names for compiled code and data. */ |
2461 | #ifndef TEXT_SECTION | |
2462 | #define TEXT_SECTION ".text" | |
2463 | #endif | |
2464 | #ifndef DATA_SECTION | |
2465 | #define DATA_SECTION ".data" | |
2466 | #endif | |
2467 | #ifndef BSS_SECTION | |
2468 | #define BSS_SECTION ".bss" | |
2469 | #endif | |
71dfc51f | 2470 | |
a3f97cbb | 2471 | |
3f76745e JM |
2472 | /* Definitions of defaults for formats and names of various special |
2473 | (artificial) labels which may be generated within this file (when the -g | |
2474 | options is used and DWARF_DEBUGGING_INFO is in effect. | |
2475 | If necessary, these may be overridden from within the tm.h file, but | |
2476 | typically, overriding these defaults is unnecessary. */ | |
a3f97cbb | 2477 | |
257ebd1f | 2478 | static char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 2479 | |
3f76745e JM |
2480 | #ifndef TEXT_END_LABEL |
2481 | #define TEXT_END_LABEL "Letext" | |
2482 | #endif | |
2483 | #ifndef DATA_END_LABEL | |
2484 | #define DATA_END_LABEL "Ledata" | |
2485 | #endif | |
2486 | #ifndef BSS_END_LABEL | |
2487 | #define BSS_END_LABEL "Lebss" | |
2488 | #endif | |
2489 | #ifndef INSN_LABEL_FMT | |
2490 | #define INSN_LABEL_FMT "LI%u_" | |
2491 | #endif | |
2492 | #ifndef BLOCK_BEGIN_LABEL | |
2493 | #define BLOCK_BEGIN_LABEL "LBB" | |
2494 | #endif | |
2495 | #ifndef BLOCK_END_LABEL | |
2496 | #define BLOCK_END_LABEL "LBE" | |
2497 | #endif | |
2498 | #ifndef BODY_BEGIN_LABEL | |
2499 | #define BODY_BEGIN_LABEL "Lbb" | |
2500 | #endif | |
2501 | #ifndef BODY_END_LABEL | |
2502 | #define BODY_END_LABEL "Lbe" | |
2503 | #endif | |
2504 | #ifndef LINE_CODE_LABEL | |
2505 | #define LINE_CODE_LABEL "LM" | |
2506 | #endif | |
2507 | #ifndef SEPARATE_LINE_CODE_LABEL | |
2508 | #define SEPARATE_LINE_CODE_LABEL "LSM" | |
2509 | #endif | |
71dfc51f | 2510 | |
3f76745e JM |
2511 | /* Convert a reference to the assembler name of a C-level name. This |
2512 | macro has the same effect as ASM_OUTPUT_LABELREF, but copies to | |
2513 | a string rather than writing to a file. */ | |
2514 | #ifndef ASM_NAME_TO_STRING | |
2515 | #define ASM_NAME_TO_STRING(STR, NAME) \ | |
2516 | do { \ | |
2517 | if ((NAME)[0] == '*') \ | |
2518 | strcpy (STR, NAME+1); \ | |
2519 | else \ | |
2520 | strcpy (STR, NAME); \ | |
2521 | } \ | |
2522 | while (0) | |
2523 | #endif | |
2524 | \f | |
2525 | /* Convert an integer constant expression into assembler syntax. Addition | |
2526 | and subtraction are the only arithmetic that may appear in these | |
2527 | expressions. This is an adaptation of output_addr_const in final.c. | |
2528 | Here, the target of the conversion is a string buffer. We can't use | |
2529 | output_addr_const directly, because it writes to a file. */ | |
71dfc51f | 2530 | |
3f76745e JM |
2531 | static void |
2532 | addr_const_to_string (str, x) | |
2533 | char *str; | |
2534 | rtx x; | |
a3f97cbb | 2535 | { |
3f76745e JM |
2536 | char buf1[256]; |
2537 | char buf2[256]; | |
71dfc51f | 2538 | |
3f76745e JM |
2539 | restart: |
2540 | str[0] = '\0'; | |
2541 | switch (GET_CODE (x)) | |
2542 | { | |
2543 | case PC: | |
2544 | if (flag_pic) | |
2545 | strcat (str, ","); | |
2546 | else | |
2547 | abort (); | |
2548 | break; | |
71dfc51f | 2549 | |
3f76745e JM |
2550 | case SYMBOL_REF: |
2551 | ASM_NAME_TO_STRING (buf1, XSTR (x, 0)); | |
2552 | strcat (str, buf1); | |
2553 | break; | |
a3f97cbb | 2554 | |
3f76745e JM |
2555 | case LABEL_REF: |
2556 | ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (XEXP (x, 0))); | |
2557 | ASM_NAME_TO_STRING (buf2, buf1); | |
2558 | strcat (str, buf2); | |
2559 | break; | |
71dfc51f | 2560 | |
3f76745e JM |
2561 | case CODE_LABEL: |
2562 | ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (x)); | |
2563 | ASM_NAME_TO_STRING (buf2, buf1); | |
2564 | strcat (str, buf2); | |
2565 | break; | |
71dfc51f | 2566 | |
3f76745e JM |
2567 | case CONST_INT: |
2568 | sprintf (buf1, HOST_WIDE_INT_PRINT_DEC, INTVAL (x)); | |
2569 | strcat (str, buf1); | |
2570 | break; | |
a3f97cbb | 2571 | |
3f76745e JM |
2572 | case CONST: |
2573 | /* This used to output parentheses around the expression, but that does | |
2574 | not work on the 386 (either ATT or BSD assembler). */ | |
2575 | addr_const_to_string (buf1, XEXP (x, 0)); | |
2576 | strcat (str, buf1); | |
2577 | break; | |
71dfc51f | 2578 | |
3f76745e JM |
2579 | case CONST_DOUBLE: |
2580 | if (GET_MODE (x) == VOIDmode) | |
2581 | { | |
2582 | /* We can use %d if the number is one word and positive. */ | |
2583 | if (CONST_DOUBLE_HIGH (x)) | |
2584 | sprintf (buf1, HOST_WIDE_INT_PRINT_DOUBLE_HEX, | |
2585 | CONST_DOUBLE_HIGH (x), CONST_DOUBLE_LOW (x)); | |
2586 | else if (CONST_DOUBLE_LOW (x) < 0) | |
2587 | sprintf (buf1, HOST_WIDE_INT_PRINT_HEX, CONST_DOUBLE_LOW (x)); | |
2588 | else | |
2589 | sprintf (buf1, HOST_WIDE_INT_PRINT_DEC, | |
2590 | CONST_DOUBLE_LOW (x)); | |
2591 | strcat (str, buf1); | |
2592 | } | |
2593 | else | |
2594 | /* We can't handle floating point constants; PRINT_OPERAND must | |
2595 | handle them. */ | |
2596 | output_operand_lossage ("floating constant misused"); | |
2597 | break; | |
71dfc51f | 2598 | |
3f76745e JM |
2599 | case PLUS: |
2600 | /* Some assemblers need integer constants to appear last (eg masm). */ | |
2601 | if (GET_CODE (XEXP (x, 0)) == CONST_INT) | |
a3f97cbb | 2602 | { |
3f76745e JM |
2603 | addr_const_to_string (buf1, XEXP (x, 1)); |
2604 | strcat (str, buf1); | |
2605 | if (INTVAL (XEXP (x, 0)) >= 0) | |
2606 | strcat (str, "+"); | |
2607 | ||
2608 | addr_const_to_string (buf1, XEXP (x, 0)); | |
2609 | strcat (str, buf1); | |
a3f97cbb | 2610 | } |
3f76745e JM |
2611 | else |
2612 | { | |
2613 | addr_const_to_string (buf1, XEXP (x, 0)); | |
2614 | strcat (str, buf1); | |
2615 | if (INTVAL (XEXP (x, 1)) >= 0) | |
2616 | strcat (str, "+"); | |
71dfc51f | 2617 | |
3f76745e JM |
2618 | addr_const_to_string (buf1, XEXP (x, 1)); |
2619 | strcat (str, buf1); | |
2620 | } | |
2621 | break; | |
a3f97cbb | 2622 | |
3f76745e JM |
2623 | case MINUS: |
2624 | /* Avoid outputting things like x-x or x+5-x, since some assemblers | |
2625 | can't handle that. */ | |
2626 | x = simplify_subtraction (x); | |
2627 | if (GET_CODE (x) != MINUS) | |
2628 | goto restart; | |
71dfc51f | 2629 | |
3f76745e JM |
2630 | addr_const_to_string (buf1, XEXP (x, 0)); |
2631 | strcat (str, buf1); | |
2632 | strcat (str, "-"); | |
2633 | if (GET_CODE (XEXP (x, 1)) == CONST_INT | |
2634 | && INTVAL (XEXP (x, 1)) < 0) | |
a3f97cbb | 2635 | { |
3f76745e JM |
2636 | strcat (str, ASM_OPEN_PAREN); |
2637 | addr_const_to_string (buf1, XEXP (x, 1)); | |
2638 | strcat (str, buf1); | |
2639 | strcat (str, ASM_CLOSE_PAREN); | |
2640 | } | |
2641 | else | |
2642 | { | |
2643 | addr_const_to_string (buf1, XEXP (x, 1)); | |
2644 | strcat (str, buf1); | |
a3f97cbb | 2645 | } |
3f76745e | 2646 | break; |
71dfc51f | 2647 | |
3f76745e JM |
2648 | case ZERO_EXTEND: |
2649 | case SIGN_EXTEND: | |
2650 | addr_const_to_string (buf1, XEXP (x, 0)); | |
2651 | strcat (str, buf1); | |
2652 | break; | |
71dfc51f | 2653 | |
3f76745e JM |
2654 | default: |
2655 | output_operand_lossage ("invalid expression as operand"); | |
2656 | } | |
d291dd49 JM |
2657 | } |
2658 | ||
3f76745e JM |
2659 | /* Convert an address constant to a string, and return a pointer to |
2660 | a copy of the result, located on the heap. */ | |
71dfc51f | 2661 | |
3f76745e JM |
2662 | static char * |
2663 | addr_to_string (x) | |
2664 | rtx x; | |
d291dd49 | 2665 | { |
3f76745e JM |
2666 | char buf[1024]; |
2667 | addr_const_to_string (buf, x); | |
2668 | return xstrdup (buf); | |
d291dd49 JM |
2669 | } |
2670 | ||
3f76745e | 2671 | /* Test if rtl node points to a psuedo register. */ |
71dfc51f | 2672 | |
3f76745e JM |
2673 | static inline int |
2674 | is_pseudo_reg (rtl) | |
2675 | register rtx rtl; | |
d291dd49 | 2676 | { |
3f76745e JM |
2677 | return (((GET_CODE (rtl) == REG) && (REGNO (rtl) >= FIRST_PSEUDO_REGISTER)) |
2678 | || ((GET_CODE (rtl) == SUBREG) | |
2679 | && (REGNO (XEXP (rtl, 0)) >= FIRST_PSEUDO_REGISTER))); | |
d291dd49 JM |
2680 | } |
2681 | ||
3f76745e JM |
2682 | /* Return a reference to a type, with its const and volatile qualifiers |
2683 | removed. */ | |
71dfc51f | 2684 | |
3f76745e JM |
2685 | static inline tree |
2686 | type_main_variant (type) | |
2687 | register tree type; | |
d291dd49 | 2688 | { |
3f76745e | 2689 | type = TYPE_MAIN_VARIANT (type); |
71dfc51f | 2690 | |
3f76745e JM |
2691 | /* There really should be only one main variant among any group of variants |
2692 | of a given type (and all of the MAIN_VARIANT values for all members of | |
2693 | the group should point to that one type) but sometimes the C front-end | |
2694 | messes this up for array types, so we work around that bug here. */ | |
71dfc51f | 2695 | |
3f76745e JM |
2696 | if (TREE_CODE (type) == ARRAY_TYPE) |
2697 | while (type != TYPE_MAIN_VARIANT (type)) | |
2698 | type = TYPE_MAIN_VARIANT (type); | |
2699 | ||
2700 | return type; | |
a3f97cbb JW |
2701 | } |
2702 | ||
3f76745e | 2703 | /* Return non-zero if the given type node represents a tagged type. */ |
71dfc51f RK |
2704 | |
2705 | static inline int | |
3f76745e JM |
2706 | is_tagged_type (type) |
2707 | register tree type; | |
bdb669cb | 2708 | { |
3f76745e | 2709 | register enum tree_code code = TREE_CODE (type); |
71dfc51f | 2710 | |
3f76745e JM |
2711 | return (code == RECORD_TYPE || code == UNION_TYPE |
2712 | || code == QUAL_UNION_TYPE || code == ENUMERAL_TYPE); | |
bdb669cb JM |
2713 | } |
2714 | ||
3f76745e | 2715 | /* Convert a DIE tag into its string name. */ |
71dfc51f | 2716 | |
3f76745e JM |
2717 | static char * |
2718 | dwarf_tag_name (tag) | |
2719 | register unsigned tag; | |
bdb669cb | 2720 | { |
3f76745e JM |
2721 | switch (tag) |
2722 | { | |
2723 | case DW_TAG_padding: | |
2724 | return "DW_TAG_padding"; | |
2725 | case DW_TAG_array_type: | |
2726 | return "DW_TAG_array_type"; | |
2727 | case DW_TAG_class_type: | |
2728 | return "DW_TAG_class_type"; | |
2729 | case DW_TAG_entry_point: | |
2730 | return "DW_TAG_entry_point"; | |
2731 | case DW_TAG_enumeration_type: | |
2732 | return "DW_TAG_enumeration_type"; | |
2733 | case DW_TAG_formal_parameter: | |
2734 | return "DW_TAG_formal_parameter"; | |
2735 | case DW_TAG_imported_declaration: | |
2736 | return "DW_TAG_imported_declaration"; | |
2737 | case DW_TAG_label: | |
2738 | return "DW_TAG_label"; | |
2739 | case DW_TAG_lexical_block: | |
2740 | return "DW_TAG_lexical_block"; | |
2741 | case DW_TAG_member: | |
2742 | return "DW_TAG_member"; | |
2743 | case DW_TAG_pointer_type: | |
2744 | return "DW_TAG_pointer_type"; | |
2745 | case DW_TAG_reference_type: | |
2746 | return "DW_TAG_reference_type"; | |
2747 | case DW_TAG_compile_unit: | |
2748 | return "DW_TAG_compile_unit"; | |
2749 | case DW_TAG_string_type: | |
2750 | return "DW_TAG_string_type"; | |
2751 | case DW_TAG_structure_type: | |
2752 | return "DW_TAG_structure_type"; | |
2753 | case DW_TAG_subroutine_type: | |
2754 | return "DW_TAG_subroutine_type"; | |
2755 | case DW_TAG_typedef: | |
2756 | return "DW_TAG_typedef"; | |
2757 | case DW_TAG_union_type: | |
2758 | return "DW_TAG_union_type"; | |
2759 | case DW_TAG_unspecified_parameters: | |
2760 | return "DW_TAG_unspecified_parameters"; | |
2761 | case DW_TAG_variant: | |
2762 | return "DW_TAG_variant"; | |
2763 | case DW_TAG_common_block: | |
2764 | return "DW_TAG_common_block"; | |
2765 | case DW_TAG_common_inclusion: | |
2766 | return "DW_TAG_common_inclusion"; | |
2767 | case DW_TAG_inheritance: | |
2768 | return "DW_TAG_inheritance"; | |
2769 | case DW_TAG_inlined_subroutine: | |
2770 | return "DW_TAG_inlined_subroutine"; | |
2771 | case DW_TAG_module: | |
2772 | return "DW_TAG_module"; | |
2773 | case DW_TAG_ptr_to_member_type: | |
2774 | return "DW_TAG_ptr_to_member_type"; | |
2775 | case DW_TAG_set_type: | |
2776 | return "DW_TAG_set_type"; | |
2777 | case DW_TAG_subrange_type: | |
2778 | return "DW_TAG_subrange_type"; | |
2779 | case DW_TAG_with_stmt: | |
2780 | return "DW_TAG_with_stmt"; | |
2781 | case DW_TAG_access_declaration: | |
2782 | return "DW_TAG_access_declaration"; | |
2783 | case DW_TAG_base_type: | |
2784 | return "DW_TAG_base_type"; | |
2785 | case DW_TAG_catch_block: | |
2786 | return "DW_TAG_catch_block"; | |
2787 | case DW_TAG_const_type: | |
2788 | return "DW_TAG_const_type"; | |
2789 | case DW_TAG_constant: | |
2790 | return "DW_TAG_constant"; | |
2791 | case DW_TAG_enumerator: | |
2792 | return "DW_TAG_enumerator"; | |
2793 | case DW_TAG_file_type: | |
2794 | return "DW_TAG_file_type"; | |
2795 | case DW_TAG_friend: | |
2796 | return "DW_TAG_friend"; | |
2797 | case DW_TAG_namelist: | |
2798 | return "DW_TAG_namelist"; | |
2799 | case DW_TAG_namelist_item: | |
2800 | return "DW_TAG_namelist_item"; | |
2801 | case DW_TAG_packed_type: | |
2802 | return "DW_TAG_packed_type"; | |
2803 | case DW_TAG_subprogram: | |
2804 | return "DW_TAG_subprogram"; | |
2805 | case DW_TAG_template_type_param: | |
2806 | return "DW_TAG_template_type_param"; | |
2807 | case DW_TAG_template_value_param: | |
2808 | return "DW_TAG_template_value_param"; | |
2809 | case DW_TAG_thrown_type: | |
2810 | return "DW_TAG_thrown_type"; | |
2811 | case DW_TAG_try_block: | |
2812 | return "DW_TAG_try_block"; | |
2813 | case DW_TAG_variant_part: | |
2814 | return "DW_TAG_variant_part"; | |
2815 | case DW_TAG_variable: | |
2816 | return "DW_TAG_variable"; | |
2817 | case DW_TAG_volatile_type: | |
2818 | return "DW_TAG_volatile_type"; | |
2819 | case DW_TAG_MIPS_loop: | |
2820 | return "DW_TAG_MIPS_loop"; | |
2821 | case DW_TAG_format_label: | |
2822 | return "DW_TAG_format_label"; | |
2823 | case DW_TAG_function_template: | |
2824 | return "DW_TAG_function_template"; | |
2825 | case DW_TAG_class_template: | |
2826 | return "DW_TAG_class_template"; | |
2827 | default: | |
2828 | return "DW_TAG_<unknown>"; | |
2829 | } | |
bdb669cb | 2830 | } |
a3f97cbb | 2831 | |
3f76745e | 2832 | /* Convert a DWARF attribute code into its string name. */ |
71dfc51f | 2833 | |
3f76745e JM |
2834 | static char * |
2835 | dwarf_attr_name (attr) | |
2836 | register unsigned attr; | |
4b674448 | 2837 | { |
3f76745e | 2838 | switch (attr) |
4b674448 | 2839 | { |
3f76745e JM |
2840 | case DW_AT_sibling: |
2841 | return "DW_AT_sibling"; | |
2842 | case DW_AT_location: | |
2843 | return "DW_AT_location"; | |
2844 | case DW_AT_name: | |
2845 | return "DW_AT_name"; | |
2846 | case DW_AT_ordering: | |
2847 | return "DW_AT_ordering"; | |
2848 | case DW_AT_subscr_data: | |
2849 | return "DW_AT_subscr_data"; | |
2850 | case DW_AT_byte_size: | |
2851 | return "DW_AT_byte_size"; | |
2852 | case DW_AT_bit_offset: | |
2853 | return "DW_AT_bit_offset"; | |
2854 | case DW_AT_bit_size: | |
2855 | return "DW_AT_bit_size"; | |
2856 | case DW_AT_element_list: | |
2857 | return "DW_AT_element_list"; | |
2858 | case DW_AT_stmt_list: | |
2859 | return "DW_AT_stmt_list"; | |
2860 | case DW_AT_low_pc: | |
2861 | return "DW_AT_low_pc"; | |
2862 | case DW_AT_high_pc: | |
2863 | return "DW_AT_high_pc"; | |
2864 | case DW_AT_language: | |
2865 | return "DW_AT_language"; | |
2866 | case DW_AT_member: | |
2867 | return "DW_AT_member"; | |
2868 | case DW_AT_discr: | |
2869 | return "DW_AT_discr"; | |
2870 | case DW_AT_discr_value: | |
2871 | return "DW_AT_discr_value"; | |
2872 | case DW_AT_visibility: | |
2873 | return "DW_AT_visibility"; | |
2874 | case DW_AT_import: | |
2875 | return "DW_AT_import"; | |
2876 | case DW_AT_string_length: | |
2877 | return "DW_AT_string_length"; | |
2878 | case DW_AT_common_reference: | |
2879 | return "DW_AT_common_reference"; | |
2880 | case DW_AT_comp_dir: | |
2881 | return "DW_AT_comp_dir"; | |
2882 | case DW_AT_const_value: | |
2883 | return "DW_AT_const_value"; | |
2884 | case DW_AT_containing_type: | |
2885 | return "DW_AT_containing_type"; | |
2886 | case DW_AT_default_value: | |
2887 | return "DW_AT_default_value"; | |
2888 | case DW_AT_inline: | |
2889 | return "DW_AT_inline"; | |
2890 | case DW_AT_is_optional: | |
2891 | return "DW_AT_is_optional"; | |
2892 | case DW_AT_lower_bound: | |
2893 | return "DW_AT_lower_bound"; | |
2894 | case DW_AT_producer: | |
2895 | return "DW_AT_producer"; | |
2896 | case DW_AT_prototyped: | |
2897 | return "DW_AT_prototyped"; | |
2898 | case DW_AT_return_addr: | |
2899 | return "DW_AT_return_addr"; | |
2900 | case DW_AT_start_scope: | |
2901 | return "DW_AT_start_scope"; | |
2902 | case DW_AT_stride_size: | |
2903 | return "DW_AT_stride_size"; | |
2904 | case DW_AT_upper_bound: | |
2905 | return "DW_AT_upper_bound"; | |
2906 | case DW_AT_abstract_origin: | |
2907 | return "DW_AT_abstract_origin"; | |
2908 | case DW_AT_accessibility: | |
2909 | return "DW_AT_accessibility"; | |
2910 | case DW_AT_address_class: | |
2911 | return "DW_AT_address_class"; | |
2912 | case DW_AT_artificial: | |
2913 | return "DW_AT_artificial"; | |
2914 | case DW_AT_base_types: | |
2915 | return "DW_AT_base_types"; | |
2916 | case DW_AT_calling_convention: | |
2917 | return "DW_AT_calling_convention"; | |
2918 | case DW_AT_count: | |
2919 | return "DW_AT_count"; | |
2920 | case DW_AT_data_member_location: | |
2921 | return "DW_AT_data_member_location"; | |
2922 | case DW_AT_decl_column: | |
2923 | return "DW_AT_decl_column"; | |
2924 | case DW_AT_decl_file: | |
2925 | return "DW_AT_decl_file"; | |
2926 | case DW_AT_decl_line: | |
2927 | return "DW_AT_decl_line"; | |
2928 | case DW_AT_declaration: | |
2929 | return "DW_AT_declaration"; | |
2930 | case DW_AT_discr_list: | |
2931 | return "DW_AT_discr_list"; | |
2932 | case DW_AT_encoding: | |
2933 | return "DW_AT_encoding"; | |
2934 | case DW_AT_external: | |
2935 | return "DW_AT_external"; | |
2936 | case DW_AT_frame_base: | |
2937 | return "DW_AT_frame_base"; | |
2938 | case DW_AT_friend: | |
2939 | return "DW_AT_friend"; | |
2940 | case DW_AT_identifier_case: | |
2941 | return "DW_AT_identifier_case"; | |
2942 | case DW_AT_macro_info: | |
2943 | return "DW_AT_macro_info"; | |
2944 | case DW_AT_namelist_items: | |
2945 | return "DW_AT_namelist_items"; | |
2946 | case DW_AT_priority: | |
2947 | return "DW_AT_priority"; | |
2948 | case DW_AT_segment: | |
2949 | return "DW_AT_segment"; | |
2950 | case DW_AT_specification: | |
2951 | return "DW_AT_specification"; | |
2952 | case DW_AT_static_link: | |
2953 | return "DW_AT_static_link"; | |
2954 | case DW_AT_type: | |
2955 | return "DW_AT_type"; | |
2956 | case DW_AT_use_location: | |
2957 | return "DW_AT_use_location"; | |
2958 | case DW_AT_variable_parameter: | |
2959 | return "DW_AT_variable_parameter"; | |
2960 | case DW_AT_virtuality: | |
2961 | return "DW_AT_virtuality"; | |
2962 | case DW_AT_vtable_elem_location: | |
2963 | return "DW_AT_vtable_elem_location"; | |
71dfc51f | 2964 | |
3f76745e JM |
2965 | case DW_AT_MIPS_fde: |
2966 | return "DW_AT_MIPS_fde"; | |
2967 | case DW_AT_MIPS_loop_begin: | |
2968 | return "DW_AT_MIPS_loop_begin"; | |
2969 | case DW_AT_MIPS_tail_loop_begin: | |
2970 | return "DW_AT_MIPS_tail_loop_begin"; | |
2971 | case DW_AT_MIPS_epilog_begin: | |
2972 | return "DW_AT_MIPS_epilog_begin"; | |
2973 | case DW_AT_MIPS_loop_unroll_factor: | |
2974 | return "DW_AT_MIPS_loop_unroll_factor"; | |
2975 | case DW_AT_MIPS_software_pipeline_depth: | |
2976 | return "DW_AT_MIPS_software_pipeline_depth"; | |
2977 | case DW_AT_MIPS_linkage_name: | |
2978 | return "DW_AT_MIPS_linkage_name"; | |
2979 | case DW_AT_MIPS_stride: | |
2980 | return "DW_AT_MIPS_stride"; | |
2981 | case DW_AT_MIPS_abstract_name: | |
2982 | return "DW_AT_MIPS_abstract_name"; | |
2983 | case DW_AT_MIPS_clone_origin: | |
2984 | return "DW_AT_MIPS_clone_origin"; | |
2985 | case DW_AT_MIPS_has_inlines: | |
2986 | return "DW_AT_MIPS_has_inlines"; | |
71dfc51f | 2987 | |
3f76745e JM |
2988 | case DW_AT_sf_names: |
2989 | return "DW_AT_sf_names"; | |
2990 | case DW_AT_src_info: | |
2991 | return "DW_AT_src_info"; | |
2992 | case DW_AT_mac_info: | |
2993 | return "DW_AT_mac_info"; | |
2994 | case DW_AT_src_coords: | |
2995 | return "DW_AT_src_coords"; | |
2996 | case DW_AT_body_begin: | |
2997 | return "DW_AT_body_begin"; | |
2998 | case DW_AT_body_end: | |
2999 | return "DW_AT_body_end"; | |
3000 | default: | |
3001 | return "DW_AT_<unknown>"; | |
4b674448 JM |
3002 | } |
3003 | } | |
3004 | ||
3f76745e | 3005 | /* Convert a DWARF value form code into its string name. */ |
71dfc51f | 3006 | |
3f76745e JM |
3007 | static char * |
3008 | dwarf_form_name (form) | |
3009 | register unsigned form; | |
4b674448 | 3010 | { |
3f76745e | 3011 | switch (form) |
4b674448 | 3012 | { |
3f76745e JM |
3013 | case DW_FORM_addr: |
3014 | return "DW_FORM_addr"; | |
3015 | case DW_FORM_block2: | |
3016 | return "DW_FORM_block2"; | |
3017 | case DW_FORM_block4: | |
3018 | return "DW_FORM_block4"; | |
3019 | case DW_FORM_data2: | |
3020 | return "DW_FORM_data2"; | |
3021 | case DW_FORM_data4: | |
3022 | return "DW_FORM_data4"; | |
3023 | case DW_FORM_data8: | |
3024 | return "DW_FORM_data8"; | |
3025 | case DW_FORM_string: | |
3026 | return "DW_FORM_string"; | |
3027 | case DW_FORM_block: | |
3028 | return "DW_FORM_block"; | |
3029 | case DW_FORM_block1: | |
3030 | return "DW_FORM_block1"; | |
3031 | case DW_FORM_data1: | |
3032 | return "DW_FORM_data1"; | |
3033 | case DW_FORM_flag: | |
3034 | return "DW_FORM_flag"; | |
3035 | case DW_FORM_sdata: | |
3036 | return "DW_FORM_sdata"; | |
3037 | case DW_FORM_strp: | |
3038 | return "DW_FORM_strp"; | |
3039 | case DW_FORM_udata: | |
3040 | return "DW_FORM_udata"; | |
3041 | case DW_FORM_ref_addr: | |
3042 | return "DW_FORM_ref_addr"; | |
3043 | case DW_FORM_ref1: | |
3044 | return "DW_FORM_ref1"; | |
3045 | case DW_FORM_ref2: | |
3046 | return "DW_FORM_ref2"; | |
3047 | case DW_FORM_ref4: | |
3048 | return "DW_FORM_ref4"; | |
3049 | case DW_FORM_ref8: | |
3050 | return "DW_FORM_ref8"; | |
3051 | case DW_FORM_ref_udata: | |
3052 | return "DW_FORM_ref_udata"; | |
3053 | case DW_FORM_indirect: | |
3054 | return "DW_FORM_indirect"; | |
3055 | default: | |
3056 | return "DW_FORM_<unknown>"; | |
4b674448 JM |
3057 | } |
3058 | } | |
3059 | ||
3f76745e | 3060 | /* Convert a DWARF stack opcode into its string name. */ |
71dfc51f | 3061 | |
3f76745e JM |
3062 | static char * |
3063 | dwarf_stack_op_name (op) | |
3064 | register unsigned op; | |
a3f97cbb | 3065 | { |
3f76745e | 3066 | switch (op) |
a3f97cbb | 3067 | { |
3f76745e JM |
3068 | case DW_OP_addr: |
3069 | return "DW_OP_addr"; | |
3070 | case DW_OP_deref: | |
3071 | return "DW_OP_deref"; | |
3072 | case DW_OP_const1u: | |
3073 | return "DW_OP_const1u"; | |
3074 | case DW_OP_const1s: | |
3075 | return "DW_OP_const1s"; | |
3076 | case DW_OP_const2u: | |
3077 | return "DW_OP_const2u"; | |
3078 | case DW_OP_const2s: | |
3079 | return "DW_OP_const2s"; | |
3080 | case DW_OP_const4u: | |
3081 | return "DW_OP_const4u"; | |
3082 | case DW_OP_const4s: | |
3083 | return "DW_OP_const4s"; | |
3084 | case DW_OP_const8u: | |
3085 | return "DW_OP_const8u"; | |
3086 | case DW_OP_const8s: | |
3087 | return "DW_OP_const8s"; | |
3088 | case DW_OP_constu: | |
3089 | return "DW_OP_constu"; | |
3090 | case DW_OP_consts: | |
3091 | return "DW_OP_consts"; | |
3092 | case DW_OP_dup: | |
3093 | return "DW_OP_dup"; | |
3094 | case DW_OP_drop: | |
3095 | return "DW_OP_drop"; | |
3096 | case DW_OP_over: | |
3097 | return "DW_OP_over"; | |
3098 | case DW_OP_pick: | |
3099 | return "DW_OP_pick"; | |
3100 | case DW_OP_swap: | |
3101 | return "DW_OP_swap"; | |
3102 | case DW_OP_rot: | |
3103 | return "DW_OP_rot"; | |
3104 | case DW_OP_xderef: | |
3105 | return "DW_OP_xderef"; | |
3106 | case DW_OP_abs: | |
3107 | return "DW_OP_abs"; | |
3108 | case DW_OP_and: | |
3109 | return "DW_OP_and"; | |
3110 | case DW_OP_div: | |
3111 | return "DW_OP_div"; | |
3112 | case DW_OP_minus: | |
3113 | return "DW_OP_minus"; | |
3114 | case DW_OP_mod: | |
3115 | return "DW_OP_mod"; | |
3116 | case DW_OP_mul: | |
3117 | return "DW_OP_mul"; | |
3118 | case DW_OP_neg: | |
3119 | return "DW_OP_neg"; | |
3120 | case DW_OP_not: | |
3121 | return "DW_OP_not"; | |
3122 | case DW_OP_or: | |
3123 | return "DW_OP_or"; | |
3124 | case DW_OP_plus: | |
3125 | return "DW_OP_plus"; | |
3126 | case DW_OP_plus_uconst: | |
3127 | return "DW_OP_plus_uconst"; | |
3128 | case DW_OP_shl: | |
3129 | return "DW_OP_shl"; | |
3130 | case DW_OP_shr: | |
3131 | return "DW_OP_shr"; | |
3132 | case DW_OP_shra: | |
3133 | return "DW_OP_shra"; | |
3134 | case DW_OP_xor: | |
3135 | return "DW_OP_xor"; | |
3136 | case DW_OP_bra: | |
3137 | return "DW_OP_bra"; | |
3138 | case DW_OP_eq: | |
3139 | return "DW_OP_eq"; | |
3140 | case DW_OP_ge: | |
3141 | return "DW_OP_ge"; | |
3142 | case DW_OP_gt: | |
3143 | return "DW_OP_gt"; | |
3144 | case DW_OP_le: | |
3145 | return "DW_OP_le"; | |
3146 | case DW_OP_lt: | |
3147 | return "DW_OP_lt"; | |
3148 | case DW_OP_ne: | |
3149 | return "DW_OP_ne"; | |
3150 | case DW_OP_skip: | |
3151 | return "DW_OP_skip"; | |
3152 | case DW_OP_lit0: | |
3153 | return "DW_OP_lit0"; | |
3154 | case DW_OP_lit1: | |
3155 | return "DW_OP_lit1"; | |
3156 | case DW_OP_lit2: | |
3157 | return "DW_OP_lit2"; | |
3158 | case DW_OP_lit3: | |
3159 | return "DW_OP_lit3"; | |
3160 | case DW_OP_lit4: | |
3161 | return "DW_OP_lit4"; | |
3162 | case DW_OP_lit5: | |
3163 | return "DW_OP_lit5"; | |
3164 | case DW_OP_lit6: | |
3165 | return "DW_OP_lit6"; | |
3166 | case DW_OP_lit7: | |
3167 | return "DW_OP_lit7"; | |
3168 | case DW_OP_lit8: | |
3169 | return "DW_OP_lit8"; | |
3170 | case DW_OP_lit9: | |
3171 | return "DW_OP_lit9"; | |
3172 | case DW_OP_lit10: | |
3173 | return "DW_OP_lit10"; | |
3174 | case DW_OP_lit11: | |
3175 | return "DW_OP_lit11"; | |
3176 | case DW_OP_lit12: | |
3177 | return "DW_OP_lit12"; | |
3178 | case DW_OP_lit13: | |
3179 | return "DW_OP_lit13"; | |
3180 | case DW_OP_lit14: | |
3181 | return "DW_OP_lit14"; | |
3182 | case DW_OP_lit15: | |
3183 | return "DW_OP_lit15"; | |
3184 | case DW_OP_lit16: | |
3185 | return "DW_OP_lit16"; | |
3186 | case DW_OP_lit17: | |
3187 | return "DW_OP_lit17"; | |
3188 | case DW_OP_lit18: | |
3189 | return "DW_OP_lit18"; | |
3190 | case DW_OP_lit19: | |
3191 | return "DW_OP_lit19"; | |
3192 | case DW_OP_lit20: | |
3193 | return "DW_OP_lit20"; | |
3194 | case DW_OP_lit21: | |
3195 | return "DW_OP_lit21"; | |
3196 | case DW_OP_lit22: | |
3197 | return "DW_OP_lit22"; | |
3198 | case DW_OP_lit23: | |
3199 | return "DW_OP_lit23"; | |
3200 | case DW_OP_lit24: | |
3201 | return "DW_OP_lit24"; | |
3202 | case DW_OP_lit25: | |
3203 | return "DW_OP_lit25"; | |
3204 | case DW_OP_lit26: | |
3205 | return "DW_OP_lit26"; | |
3206 | case DW_OP_lit27: | |
3207 | return "DW_OP_lit27"; | |
3208 | case DW_OP_lit28: | |
3209 | return "DW_OP_lit28"; | |
3210 | case DW_OP_lit29: | |
3211 | return "DW_OP_lit29"; | |
3212 | case DW_OP_lit30: | |
3213 | return "DW_OP_lit30"; | |
3214 | case DW_OP_lit31: | |
3215 | return "DW_OP_lit31"; | |
3216 | case DW_OP_reg0: | |
3217 | return "DW_OP_reg0"; | |
3218 | case DW_OP_reg1: | |
3219 | return "DW_OP_reg1"; | |
3220 | case DW_OP_reg2: | |
3221 | return "DW_OP_reg2"; | |
3222 | case DW_OP_reg3: | |
3223 | return "DW_OP_reg3"; | |
3224 | case DW_OP_reg4: | |
3225 | return "DW_OP_reg4"; | |
3226 | case DW_OP_reg5: | |
3227 | return "DW_OP_reg5"; | |
3228 | case DW_OP_reg6: | |
3229 | return "DW_OP_reg6"; | |
3230 | case DW_OP_reg7: | |
3231 | return "DW_OP_reg7"; | |
3232 | case DW_OP_reg8: | |
3233 | return "DW_OP_reg8"; | |
3234 | case DW_OP_reg9: | |
3235 | return "DW_OP_reg9"; | |
3236 | case DW_OP_reg10: | |
3237 | return "DW_OP_reg10"; | |
3238 | case DW_OP_reg11: | |
3239 | return "DW_OP_reg11"; | |
3240 | case DW_OP_reg12: | |
3241 | return "DW_OP_reg12"; | |
3242 | case DW_OP_reg13: | |
3243 | return "DW_OP_reg13"; | |
3244 | case DW_OP_reg14: | |
3245 | return "DW_OP_reg14"; | |
3246 | case DW_OP_reg15: | |
3247 | return "DW_OP_reg15"; | |
3248 | case DW_OP_reg16: | |
3249 | return "DW_OP_reg16"; | |
3250 | case DW_OP_reg17: | |
3251 | return "DW_OP_reg17"; | |
3252 | case DW_OP_reg18: | |
3253 | return "DW_OP_reg18"; | |
3254 | case DW_OP_reg19: | |
3255 | return "DW_OP_reg19"; | |
3256 | case DW_OP_reg20: | |
3257 | return "DW_OP_reg20"; | |
3258 | case DW_OP_reg21: | |
3259 | return "DW_OP_reg21"; | |
3260 | case DW_OP_reg22: | |
3261 | return "DW_OP_reg22"; | |
3262 | case DW_OP_reg23: | |
3263 | return "DW_OP_reg23"; | |
3264 | case DW_OP_reg24: | |
3265 | return "DW_OP_reg24"; | |
3266 | case DW_OP_reg25: | |
3267 | return "DW_OP_reg25"; | |
3268 | case DW_OP_reg26: | |
3269 | return "DW_OP_reg26"; | |
3270 | case DW_OP_reg27: | |
3271 | return "DW_OP_reg27"; | |
3272 | case DW_OP_reg28: | |
3273 | return "DW_OP_reg28"; | |
3274 | case DW_OP_reg29: | |
3275 | return "DW_OP_reg29"; | |
3276 | case DW_OP_reg30: | |
3277 | return "DW_OP_reg30"; | |
3278 | case DW_OP_reg31: | |
3279 | return "DW_OP_reg31"; | |
3280 | case DW_OP_breg0: | |
3281 | return "DW_OP_breg0"; | |
3282 | case DW_OP_breg1: | |
3283 | return "DW_OP_breg1"; | |
3284 | case DW_OP_breg2: | |
3285 | return "DW_OP_breg2"; | |
3286 | case DW_OP_breg3: | |
3287 | return "DW_OP_breg3"; | |
3288 | case DW_OP_breg4: | |
3289 | return "DW_OP_breg4"; | |
3290 | case DW_OP_breg5: | |
3291 | return "DW_OP_breg5"; | |
3292 | case DW_OP_breg6: | |
3293 | return "DW_OP_breg6"; | |
3294 | case DW_OP_breg7: | |
3295 | return "DW_OP_breg7"; | |
3296 | case DW_OP_breg8: | |
3297 | return "DW_OP_breg8"; | |
3298 | case DW_OP_breg9: | |
3299 | return "DW_OP_breg9"; | |
3300 | case DW_OP_breg10: | |
3301 | return "DW_OP_breg10"; | |
3302 | case DW_OP_breg11: | |
3303 | return "DW_OP_breg11"; | |
3304 | case DW_OP_breg12: | |
3305 | return "DW_OP_breg12"; | |
3306 | case DW_OP_breg13: | |
3307 | return "DW_OP_breg13"; | |
3308 | case DW_OP_breg14: | |
3309 | return "DW_OP_breg14"; | |
3310 | case DW_OP_breg15: | |
3311 | return "DW_OP_breg15"; | |
3312 | case DW_OP_breg16: | |
3313 | return "DW_OP_breg16"; | |
3314 | case DW_OP_breg17: | |
3315 | return "DW_OP_breg17"; | |
3316 | case DW_OP_breg18: | |
3317 | return "DW_OP_breg18"; | |
3318 | case DW_OP_breg19: | |
3319 | return "DW_OP_breg19"; | |
3320 | case DW_OP_breg20: | |
3321 | return "DW_OP_breg20"; | |
3322 | case DW_OP_breg21: | |
3323 | return "DW_OP_breg21"; | |
3324 | case DW_OP_breg22: | |
3325 | return "DW_OP_breg22"; | |
3326 | case DW_OP_breg23: | |
3327 | return "DW_OP_breg23"; | |
3328 | case DW_OP_breg24: | |
3329 | return "DW_OP_breg24"; | |
3330 | case DW_OP_breg25: | |
3331 | return "DW_OP_breg25"; | |
3332 | case DW_OP_breg26: | |
3333 | return "DW_OP_breg26"; | |
3334 | case DW_OP_breg27: | |
3335 | return "DW_OP_breg27"; | |
3336 | case DW_OP_breg28: | |
3337 | return "DW_OP_breg28"; | |
3338 | case DW_OP_breg29: | |
3339 | return "DW_OP_breg29"; | |
3340 | case DW_OP_breg30: | |
3341 | return "DW_OP_breg30"; | |
3342 | case DW_OP_breg31: | |
3343 | return "DW_OP_breg31"; | |
3344 | case DW_OP_regx: | |
3345 | return "DW_OP_regx"; | |
3346 | case DW_OP_fbreg: | |
3347 | return "DW_OP_fbreg"; | |
3348 | case DW_OP_bregx: | |
3349 | return "DW_OP_bregx"; | |
3350 | case DW_OP_piece: | |
3351 | return "DW_OP_piece"; | |
3352 | case DW_OP_deref_size: | |
3353 | return "DW_OP_deref_size"; | |
3354 | case DW_OP_xderef_size: | |
3355 | return "DW_OP_xderef_size"; | |
3356 | case DW_OP_nop: | |
3357 | return "DW_OP_nop"; | |
3358 | default: | |
3359 | return "OP_<unknown>"; | |
a3f97cbb JW |
3360 | } |
3361 | } | |
3362 | ||
3f76745e | 3363 | /* Convert a DWARF type code into its string name. */ |
71dfc51f | 3364 | |
3f76745e JM |
3365 | static char * |
3366 | dwarf_type_encoding_name (enc) | |
3367 | register unsigned enc; | |
a3f97cbb | 3368 | { |
3f76745e | 3369 | switch (enc) |
a3f97cbb | 3370 | { |
3f76745e JM |
3371 | case DW_ATE_address: |
3372 | return "DW_ATE_address"; | |
3373 | case DW_ATE_boolean: | |
3374 | return "DW_ATE_boolean"; | |
3375 | case DW_ATE_complex_float: | |
3376 | return "DW_ATE_complex_float"; | |
3377 | case DW_ATE_float: | |
3378 | return "DW_ATE_float"; | |
3379 | case DW_ATE_signed: | |
3380 | return "DW_ATE_signed"; | |
3381 | case DW_ATE_signed_char: | |
3382 | return "DW_ATE_signed_char"; | |
3383 | case DW_ATE_unsigned: | |
3384 | return "DW_ATE_unsigned"; | |
3385 | case DW_ATE_unsigned_char: | |
3386 | return "DW_ATE_unsigned_char"; | |
3387 | default: | |
3388 | return "DW_ATE_<unknown>"; | |
3389 | } | |
a3f97cbb | 3390 | } |
3f76745e JM |
3391 | \f |
3392 | /* Determine the "ultimate origin" of a decl. The decl may be an inlined | |
3393 | instance of an inlined instance of a decl which is local to an inline | |
3394 | function, so we have to trace all of the way back through the origin chain | |
3395 | to find out what sort of node actually served as the original seed for the | |
3396 | given block. */ | |
a3f97cbb | 3397 | |
3f76745e JM |
3398 | static tree |
3399 | decl_ultimate_origin (decl) | |
3400 | register tree decl; | |
a3f97cbb | 3401 | { |
3f76745e | 3402 | register tree immediate_origin = DECL_ABSTRACT_ORIGIN (decl); |
71dfc51f | 3403 | |
3f76745e JM |
3404 | if (immediate_origin == NULL_TREE) |
3405 | return NULL_TREE; | |
3406 | else | |
3407 | { | |
3408 | register tree ret_val; | |
3409 | register tree lookahead = immediate_origin; | |
71dfc51f | 3410 | |
3f76745e JM |
3411 | do |
3412 | { | |
3413 | ret_val = lookahead; | |
3414 | lookahead = DECL_ABSTRACT_ORIGIN (ret_val); | |
3415 | } | |
3416 | while (lookahead != NULL && lookahead != ret_val); | |
3417 | ||
3418 | return ret_val; | |
3419 | } | |
a3f97cbb JW |
3420 | } |
3421 | ||
3f76745e JM |
3422 | /* Determine the "ultimate origin" of a block. The block may be an inlined |
3423 | instance of an inlined instance of a block which is local to an inline | |
3424 | function, so we have to trace all of the way back through the origin chain | |
3425 | to find out what sort of node actually served as the original seed for the | |
3426 | given block. */ | |
71dfc51f | 3427 | |
3f76745e JM |
3428 | static tree |
3429 | block_ultimate_origin (block) | |
3430 | register tree block; | |
a3f97cbb | 3431 | { |
3f76745e | 3432 | register tree immediate_origin = BLOCK_ABSTRACT_ORIGIN (block); |
71dfc51f | 3433 | |
3f76745e JM |
3434 | if (immediate_origin == NULL_TREE) |
3435 | return NULL_TREE; | |
3436 | else | |
3437 | { | |
3438 | register tree ret_val; | |
3439 | register tree lookahead = immediate_origin; | |
71dfc51f | 3440 | |
3f76745e JM |
3441 | do |
3442 | { | |
3443 | ret_val = lookahead; | |
3444 | lookahead = (TREE_CODE (ret_val) == BLOCK) | |
3445 | ? BLOCK_ABSTRACT_ORIGIN (ret_val) | |
3446 | : NULL; | |
3447 | } | |
3448 | while (lookahead != NULL && lookahead != ret_val); | |
3449 | ||
3450 | return ret_val; | |
3451 | } | |
a3f97cbb JW |
3452 | } |
3453 | ||
3f76745e JM |
3454 | /* Get the class to which DECL belongs, if any. In g++, the DECL_CONTEXT |
3455 | of a virtual function may refer to a base class, so we check the 'this' | |
3456 | parameter. */ | |
71dfc51f | 3457 | |
3f76745e JM |
3458 | static tree |
3459 | decl_class_context (decl) | |
3460 | tree decl; | |
a3f97cbb | 3461 | { |
3f76745e | 3462 | tree context = NULL_TREE; |
71dfc51f | 3463 | |
3f76745e JM |
3464 | if (TREE_CODE (decl) != FUNCTION_DECL || ! DECL_VINDEX (decl)) |
3465 | context = DECL_CONTEXT (decl); | |
3466 | else | |
3467 | context = TYPE_MAIN_VARIANT | |
3468 | (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))))); | |
71dfc51f | 3469 | |
3f76745e JM |
3470 | if (context && TREE_CODE_CLASS (TREE_CODE (context)) != 't') |
3471 | context = NULL_TREE; | |
3472 | ||
3473 | return context; | |
a3f97cbb JW |
3474 | } |
3475 | \f | |
3f76745e | 3476 | /* Add an attribute/value pair to a DIE */ |
71dfc51f RK |
3477 | |
3478 | static inline void | |
3f76745e JM |
3479 | add_dwarf_attr (die, attr) |
3480 | register dw_die_ref die; | |
3481 | register dw_attr_ref attr; | |
a3f97cbb | 3482 | { |
3f76745e | 3483 | if (die != NULL && attr != NULL) |
a3f97cbb | 3484 | { |
3f76745e | 3485 | if (die->die_attr == NULL) |
a3f97cbb | 3486 | { |
3f76745e JM |
3487 | die->die_attr = attr; |
3488 | die->die_attr_last = attr; | |
3489 | } | |
3490 | else | |
3491 | { | |
3492 | die->die_attr_last->dw_attr_next = attr; | |
3493 | die->die_attr_last = attr; | |
a3f97cbb | 3494 | } |
a3f97cbb JW |
3495 | } |
3496 | } | |
3497 | ||
3f76745e | 3498 | /* Add a flag value attribute to a DIE. */ |
71dfc51f | 3499 | |
3f76745e JM |
3500 | static inline void |
3501 | add_AT_flag (die, attr_kind, flag) | |
3502 | register dw_die_ref die; | |
3503 | register enum dwarf_attribute attr_kind; | |
3504 | register unsigned flag; | |
a3f97cbb | 3505 | { |
3f76745e | 3506 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3507 | |
3f76745e JM |
3508 | attr->dw_attr_next = NULL; |
3509 | attr->dw_attr = attr_kind; | |
3510 | attr->dw_attr_val.val_class = dw_val_class_flag; | |
3511 | attr->dw_attr_val.v.val_flag = flag; | |
3512 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3513 | } |
3514 | ||
3f76745e | 3515 | /* Add a signed integer attribute value to a DIE. */ |
71dfc51f | 3516 | |
3f76745e JM |
3517 | static inline void |
3518 | add_AT_int (die, attr_kind, int_val) | |
3519 | register dw_die_ref die; | |
3520 | register enum dwarf_attribute attr_kind; | |
3521 | register long int int_val; | |
a3f97cbb | 3522 | { |
3f76745e JM |
3523 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3524 | ||
3525 | attr->dw_attr_next = NULL; | |
3526 | attr->dw_attr = attr_kind; | |
3527 | attr->dw_attr_val.val_class = dw_val_class_const; | |
3528 | attr->dw_attr_val.v.val_int = int_val; | |
3529 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3530 | } |
3531 | ||
3f76745e | 3532 | /* Add an unsigned integer attribute value to a DIE. */ |
71dfc51f | 3533 | |
3f76745e JM |
3534 | static inline void |
3535 | add_AT_unsigned (die, attr_kind, unsigned_val) | |
3536 | register dw_die_ref die; | |
3537 | register enum dwarf_attribute attr_kind; | |
3538 | register unsigned long unsigned_val; | |
a3f97cbb | 3539 | { |
3f76745e JM |
3540 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3541 | ||
3542 | attr->dw_attr_next = NULL; | |
3543 | attr->dw_attr = attr_kind; | |
3544 | attr->dw_attr_val.val_class = dw_val_class_unsigned_const; | |
3545 | attr->dw_attr_val.v.val_unsigned = unsigned_val; | |
3546 | add_dwarf_attr (die, attr); | |
a3f97cbb | 3547 | } |
71dfc51f | 3548 | |
3f76745e JM |
3549 | /* Add an unsigned double integer attribute value to a DIE. */ |
3550 | ||
3551 | static inline void | |
3552 | add_AT_long_long (die, attr_kind, val_hi, val_low) | |
a3f97cbb | 3553 | register dw_die_ref die; |
3f76745e JM |
3554 | register enum dwarf_attribute attr_kind; |
3555 | register unsigned long val_hi; | |
3556 | register unsigned long val_low; | |
a3f97cbb | 3557 | { |
3f76745e | 3558 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3559 | |
3f76745e JM |
3560 | attr->dw_attr_next = NULL; |
3561 | attr->dw_attr = attr_kind; | |
3562 | attr->dw_attr_val.val_class = dw_val_class_long_long; | |
3563 | attr->dw_attr_val.v.val_long_long.hi = val_hi; | |
3564 | attr->dw_attr_val.v.val_long_long.low = val_low; | |
3565 | add_dwarf_attr (die, attr); | |
3566 | } | |
71dfc51f | 3567 | |
3f76745e | 3568 | /* Add a floating point attribute value to a DIE and return it. */ |
71dfc51f | 3569 | |
3f76745e JM |
3570 | static inline void |
3571 | add_AT_float (die, attr_kind, length, array) | |
3572 | register dw_die_ref die; | |
3573 | register enum dwarf_attribute attr_kind; | |
3574 | register unsigned length; | |
3575 | register long *array; | |
3576 | { | |
3577 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
3578 | ||
3579 | attr->dw_attr_next = NULL; | |
3580 | attr->dw_attr = attr_kind; | |
3581 | attr->dw_attr_val.val_class = dw_val_class_float; | |
3582 | attr->dw_attr_val.v.val_float.length = length; | |
3583 | attr->dw_attr_val.v.val_float.array = array; | |
3584 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3585 | } |
3586 | ||
3f76745e | 3587 | /* Add a string attribute value to a DIE. */ |
71dfc51f | 3588 | |
3f76745e JM |
3589 | static inline void |
3590 | add_AT_string (die, attr_kind, str) | |
a3f97cbb | 3591 | register dw_die_ref die; |
3f76745e JM |
3592 | register enum dwarf_attribute attr_kind; |
3593 | register char *str; | |
a3f97cbb | 3594 | { |
3f76745e | 3595 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3596 | |
3f76745e JM |
3597 | attr->dw_attr_next = NULL; |
3598 | attr->dw_attr = attr_kind; | |
3599 | attr->dw_attr_val.val_class = dw_val_class_str; | |
3600 | attr->dw_attr_val.v.val_str = xstrdup (str); | |
3601 | add_dwarf_attr (die, attr); | |
3602 | } | |
71dfc51f | 3603 | |
3f76745e | 3604 | /* Add a DIE reference attribute value to a DIE. */ |
71dfc51f | 3605 | |
3f76745e JM |
3606 | static inline void |
3607 | add_AT_die_ref (die, attr_kind, targ_die) | |
3608 | register dw_die_ref die; | |
3609 | register enum dwarf_attribute attr_kind; | |
3610 | register dw_die_ref targ_die; | |
3611 | { | |
3612 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3613 | |
3f76745e JM |
3614 | attr->dw_attr_next = NULL; |
3615 | attr->dw_attr = attr_kind; | |
3616 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
3617 | attr->dw_attr_val.v.val_die_ref = targ_die; | |
3618 | add_dwarf_attr (die, attr); | |
3619 | } | |
b1ccbc24 | 3620 | |
3f76745e | 3621 | /* Add an FDE reference attribute value to a DIE. */ |
b1ccbc24 | 3622 | |
3f76745e JM |
3623 | static inline void |
3624 | add_AT_fde_ref (die, attr_kind, targ_fde) | |
3625 | register dw_die_ref die; | |
3626 | register enum dwarf_attribute attr_kind; | |
3627 | register unsigned targ_fde; | |
3628 | { | |
3629 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
b1ccbc24 | 3630 | |
3f76745e JM |
3631 | attr->dw_attr_next = NULL; |
3632 | attr->dw_attr = attr_kind; | |
3633 | attr->dw_attr_val.val_class = dw_val_class_fde_ref; | |
3634 | attr->dw_attr_val.v.val_fde_index = targ_fde; | |
3635 | add_dwarf_attr (die, attr); | |
a3f97cbb | 3636 | } |
71dfc51f | 3637 | |
3f76745e | 3638 | /* Add a location description attribute value to a DIE. */ |
71dfc51f | 3639 | |
3f76745e JM |
3640 | static inline void |
3641 | add_AT_loc (die, attr_kind, loc) | |
3642 | register dw_die_ref die; | |
3643 | register enum dwarf_attribute attr_kind; | |
3644 | register dw_loc_descr_ref loc; | |
3645 | { | |
3646 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3647 | |
3f76745e JM |
3648 | attr->dw_attr_next = NULL; |
3649 | attr->dw_attr = attr_kind; | |
3650 | attr->dw_attr_val.val_class = dw_val_class_loc; | |
3651 | attr->dw_attr_val.v.val_loc = loc; | |
3652 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3653 | } |
3654 | ||
3f76745e | 3655 | /* Add an address constant attribute value to a DIE. */ |
71dfc51f | 3656 | |
3f76745e JM |
3657 | static inline void |
3658 | add_AT_addr (die, attr_kind, addr) | |
3659 | register dw_die_ref die; | |
3660 | register enum dwarf_attribute attr_kind; | |
3661 | char *addr; | |
a3f97cbb | 3662 | { |
3f76745e | 3663 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3664 | |
3f76745e JM |
3665 | attr->dw_attr_next = NULL; |
3666 | attr->dw_attr = attr_kind; | |
3667 | attr->dw_attr_val.val_class = dw_val_class_addr; | |
3668 | attr->dw_attr_val.v.val_addr = addr; | |
3669 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3670 | } |
3671 | ||
3f76745e | 3672 | /* Add a label identifier attribute value to a DIE. */ |
71dfc51f | 3673 | |
3f76745e JM |
3674 | static inline void |
3675 | add_AT_lbl_id (die, attr_kind, lbl_id) | |
3676 | register dw_die_ref die; | |
3677 | register enum dwarf_attribute attr_kind; | |
3678 | register char *lbl_id; | |
a3f97cbb | 3679 | { |
3f76745e | 3680 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3681 | |
3f76745e JM |
3682 | attr->dw_attr_next = NULL; |
3683 | attr->dw_attr = attr_kind; | |
3684 | attr->dw_attr_val.val_class = dw_val_class_lbl_id; | |
3685 | attr->dw_attr_val.v.val_lbl_id = xstrdup (lbl_id); | |
3686 | add_dwarf_attr (die, attr); | |
3687 | } | |
71dfc51f | 3688 | |
3f76745e JM |
3689 | /* Add a section offset attribute value to a DIE. */ |
3690 | ||
3691 | static inline void | |
3692 | add_AT_section_offset (die, attr_kind, section) | |
3693 | register dw_die_ref die; | |
3694 | register enum dwarf_attribute attr_kind; | |
3695 | register char *section; | |
3696 | { | |
3697 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3698 | |
3f76745e JM |
3699 | attr->dw_attr_next = NULL; |
3700 | attr->dw_attr = attr_kind; | |
3701 | attr->dw_attr_val.val_class = dw_val_class_section_offset; | |
3702 | attr->dw_attr_val.v.val_section = section; | |
3703 | add_dwarf_attr (die, attr); | |
3704 | ||
a3f97cbb JW |
3705 | } |
3706 | ||
3f76745e | 3707 | /* Test if die refers to an external subroutine. */ |
71dfc51f | 3708 | |
3f76745e JM |
3709 | static inline int |
3710 | is_extern_subr_die (die) | |
3711 | register dw_die_ref die; | |
a3f97cbb | 3712 | { |
3f76745e JM |
3713 | register dw_attr_ref a; |
3714 | register int is_subr = FALSE; | |
3715 | register int is_extern = FALSE; | |
71dfc51f | 3716 | |
3f76745e | 3717 | if (die != NULL && die->die_tag == DW_TAG_subprogram) |
a3f97cbb | 3718 | { |
3f76745e JM |
3719 | is_subr = TRUE; |
3720 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
3721 | { | |
3722 | if (a->dw_attr == DW_AT_external | |
3723 | && a->dw_attr_val.val_class == dw_val_class_flag | |
3724 | && a->dw_attr_val.v.val_flag != 0) | |
3725 | { | |
3726 | is_extern = TRUE; | |
3727 | break; | |
3728 | } | |
3729 | } | |
a3f97cbb | 3730 | } |
71dfc51f | 3731 | |
3f76745e | 3732 | return is_subr && is_extern; |
a3f97cbb JW |
3733 | } |
3734 | ||
3f76745e | 3735 | /* Get the attribute of type attr_kind. */ |
71dfc51f | 3736 | |
3f76745e JM |
3737 | static inline dw_attr_ref |
3738 | get_AT (die, attr_kind) | |
3739 | register dw_die_ref die; | |
3740 | register enum dwarf_attribute attr_kind; | |
f37230f0 | 3741 | { |
3f76745e JM |
3742 | register dw_attr_ref a; |
3743 | register dw_die_ref spec = NULL; | |
3744 | ||
3745 | if (die != NULL) | |
3746 | { | |
3747 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
3748 | { | |
3749 | if (a->dw_attr == attr_kind) | |
3750 | return a; | |
71dfc51f | 3751 | |
3f76745e JM |
3752 | if (a->dw_attr == DW_AT_specification |
3753 | || a->dw_attr == DW_AT_abstract_origin) | |
3754 | spec = a->dw_attr_val.v.val_die_ref; | |
3755 | } | |
71dfc51f | 3756 | |
3f76745e JM |
3757 | if (spec) |
3758 | return get_AT (spec, attr_kind); | |
3759 | } | |
3760 | ||
3761 | return NULL; | |
f37230f0 JM |
3762 | } |
3763 | ||
3f76745e JM |
3764 | /* Return the "low pc" attribute value, typically associated with |
3765 | a subprogram DIE. Return null if the "low pc" attribute is | |
3766 | either not prsent, or if it cannot be represented as an | |
3767 | assembler label identifier. */ | |
71dfc51f | 3768 | |
3f76745e JM |
3769 | static inline char * |
3770 | get_AT_low_pc (die) | |
3771 | register dw_die_ref die; | |
7e23cb16 | 3772 | { |
3f76745e | 3773 | register dw_attr_ref a = get_AT (die, DW_AT_low_pc); |
7e23cb16 | 3774 | |
3f76745e JM |
3775 | if (a && a->dw_attr_val.val_class == dw_val_class_lbl_id) |
3776 | return a->dw_attr_val.v.val_lbl_id; | |
7e23cb16 | 3777 | |
3f76745e | 3778 | return NULL; |
7e23cb16 JM |
3779 | } |
3780 | ||
3f76745e JM |
3781 | /* Return the "high pc" attribute value, typically associated with |
3782 | a subprogram DIE. Return null if the "high pc" attribute is | |
3783 | either not prsent, or if it cannot be represented as an | |
3784 | assembler label identifier. */ | |
71dfc51f | 3785 | |
3f76745e JM |
3786 | static inline char * |
3787 | get_AT_hi_pc (die) | |
a3f97cbb JW |
3788 | register dw_die_ref die; |
3789 | { | |
3f76745e | 3790 | register dw_attr_ref a = get_AT (die, DW_AT_high_pc); |
71dfc51f | 3791 | |
3f76745e JM |
3792 | if (a && a->dw_attr_val.val_class == dw_val_class_lbl_id) |
3793 | return a->dw_attr_val.v.val_lbl_id; | |
f37230f0 | 3794 | |
3f76745e JM |
3795 | return NULL; |
3796 | } | |
3797 | ||
3798 | /* Return the value of the string attribute designated by ATTR_KIND, or | |
3799 | NULL if it is not present. */ | |
71dfc51f | 3800 | |
3f76745e JM |
3801 | static inline char * |
3802 | get_AT_string (die, attr_kind) | |
3803 | register dw_die_ref die; | |
3804 | register enum dwarf_attribute attr_kind; | |
3805 | { | |
3806 | register dw_attr_ref a = get_AT (die, attr_kind); | |
3807 | ||
3808 | if (a && a->dw_attr_val.val_class == dw_val_class_str) | |
3809 | return a->dw_attr_val.v.val_str; | |
3810 | ||
3811 | return NULL; | |
a3f97cbb JW |
3812 | } |
3813 | ||
3f76745e JM |
3814 | /* Return the value of the flag attribute designated by ATTR_KIND, or -1 |
3815 | if it is not present. */ | |
71dfc51f | 3816 | |
3f76745e JM |
3817 | static inline int |
3818 | get_AT_flag (die, attr_kind) | |
3819 | register dw_die_ref die; | |
3820 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 3821 | { |
3f76745e | 3822 | register dw_attr_ref a = get_AT (die, attr_kind); |
71dfc51f | 3823 | |
3f76745e JM |
3824 | if (a && a->dw_attr_val.val_class == dw_val_class_flag) |
3825 | return a->dw_attr_val.v.val_flag; | |
71dfc51f | 3826 | |
3f76745e | 3827 | return -1; |
a3f97cbb JW |
3828 | } |
3829 | ||
3f76745e JM |
3830 | /* Return the value of the unsigned attribute designated by ATTR_KIND, or 0 |
3831 | if it is not present. */ | |
71dfc51f | 3832 | |
3f76745e JM |
3833 | static inline unsigned |
3834 | get_AT_unsigned (die, attr_kind) | |
3835 | register dw_die_ref die; | |
3836 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 3837 | { |
3f76745e | 3838 | register dw_attr_ref a = get_AT (die, attr_kind); |
71dfc51f | 3839 | |
3f76745e JM |
3840 | if (a && a->dw_attr_val.val_class == dw_val_class_unsigned_const) |
3841 | return a->dw_attr_val.v.val_unsigned; | |
71dfc51f | 3842 | |
3f76745e JM |
3843 | return 0; |
3844 | } | |
71dfc51f | 3845 | |
3f76745e JM |
3846 | static inline int |
3847 | is_c_family () | |
3848 | { | |
3849 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 3850 | |
3f76745e JM |
3851 | return (lang == DW_LANG_C || lang == DW_LANG_C89 |
3852 | || lang == DW_LANG_C_plus_plus); | |
3853 | } | |
71dfc51f | 3854 | |
3f76745e JM |
3855 | static inline int |
3856 | is_fortran () | |
3857 | { | |
3858 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 3859 | |
3f76745e JM |
3860 | return (lang == DW_LANG_Fortran77 || lang == DW_LANG_Fortran90); |
3861 | } | |
71dfc51f | 3862 | |
3f76745e | 3863 | /* Remove the specified attribute if present. */ |
71dfc51f | 3864 | |
3f76745e JM |
3865 | static inline void |
3866 | remove_AT (die, attr_kind) | |
3867 | register dw_die_ref die; | |
3868 | register enum dwarf_attribute attr_kind; | |
3869 | { | |
3870 | register dw_attr_ref a; | |
3871 | register dw_attr_ref removed = NULL;; | |
a3f97cbb | 3872 | |
3f76745e JM |
3873 | if (die != NULL) |
3874 | { | |
3875 | if (die->die_attr->dw_attr == attr_kind) | |
3876 | { | |
3877 | removed = die->die_attr; | |
3878 | if (die->die_attr_last == die->die_attr) | |
3879 | die->die_attr_last = NULL; | |
71dfc51f | 3880 | |
3f76745e JM |
3881 | die->die_attr = die->die_attr->dw_attr_next; |
3882 | } | |
71dfc51f | 3883 | |
3f76745e JM |
3884 | else |
3885 | for (a = die->die_attr; a->dw_attr_next != NULL; | |
3886 | a = a->dw_attr_next) | |
3887 | if (a->dw_attr_next->dw_attr == attr_kind) | |
3888 | { | |
3889 | removed = a->dw_attr_next; | |
3890 | if (die->die_attr_last == a->dw_attr_next) | |
3891 | die->die_attr_last = a; | |
71dfc51f | 3892 | |
3f76745e JM |
3893 | a->dw_attr_next = a->dw_attr_next->dw_attr_next; |
3894 | break; | |
3895 | } | |
71dfc51f | 3896 | |
3f76745e JM |
3897 | if (removed != 0) |
3898 | free (removed); | |
3899 | } | |
3900 | } | |
71dfc51f | 3901 | |
3f76745e | 3902 | /* Discard the children of this DIE. */ |
71dfc51f | 3903 | |
3f76745e JM |
3904 | static inline void |
3905 | remove_children (die) | |
3906 | register dw_die_ref die; | |
3907 | { | |
3908 | register dw_die_ref child_die = die->die_child; | |
3909 | ||
3910 | die->die_child = NULL; | |
3911 | die->die_child_last = NULL; | |
3912 | ||
3913 | while (child_die != NULL) | |
a3f97cbb | 3914 | { |
3f76745e JM |
3915 | register dw_die_ref tmp_die = child_die; |
3916 | register dw_attr_ref a; | |
71dfc51f | 3917 | |
3f76745e JM |
3918 | child_die = child_die->die_sib; |
3919 | ||
3920 | for (a = tmp_die->die_attr; a != NULL; ) | |
a3f97cbb | 3921 | { |
3f76745e | 3922 | register dw_attr_ref tmp_a = a; |
71dfc51f | 3923 | |
3f76745e JM |
3924 | a = a->dw_attr_next; |
3925 | free (tmp_a); | |
a3f97cbb | 3926 | } |
71dfc51f | 3927 | |
3f76745e JM |
3928 | free (tmp_die); |
3929 | } | |
3930 | } | |
71dfc51f | 3931 | |
3f76745e | 3932 | /* Add a child DIE below its parent. */ |
71dfc51f | 3933 | |
3f76745e JM |
3934 | static inline void |
3935 | add_child_die (die, child_die) | |
3936 | register dw_die_ref die; | |
3937 | register dw_die_ref child_die; | |
3938 | { | |
3939 | if (die != NULL && child_die != NULL) | |
e90b62db | 3940 | { |
3a88cbd1 JL |
3941 | if (die == child_die) |
3942 | abort (); | |
3f76745e JM |
3943 | child_die->die_parent = die; |
3944 | child_die->die_sib = NULL; | |
3945 | ||
3946 | if (die->die_child == NULL) | |
e90b62db | 3947 | { |
3f76745e JM |
3948 | die->die_child = child_die; |
3949 | die->die_child_last = child_die; | |
e90b62db JM |
3950 | } |
3951 | else | |
e90b62db | 3952 | { |
3f76745e JM |
3953 | die->die_child_last->die_sib = child_die; |
3954 | die->die_child_last = child_die; | |
e90b62db | 3955 | } |
3f76745e JM |
3956 | } |
3957 | } | |
3958 | ||
3959 | /* Return a pointer to a newly created DIE node. */ | |
3960 | ||
3961 | static inline dw_die_ref | |
3962 | new_die (tag_value, parent_die) | |
3963 | register enum dwarf_tag tag_value; | |
3964 | register dw_die_ref parent_die; | |
3965 | { | |
3966 | register dw_die_ref die = (dw_die_ref) xmalloc (sizeof (die_node)); | |
3967 | ||
3968 | die->die_tag = tag_value; | |
3969 | die->die_abbrev = 0; | |
3970 | die->die_offset = 0; | |
3971 | die->die_child = NULL; | |
3972 | die->die_parent = NULL; | |
3973 | die->die_sib = NULL; | |
3974 | die->die_child_last = NULL; | |
3975 | die->die_attr = NULL; | |
3976 | die->die_attr_last = NULL; | |
3977 | ||
3978 | if (parent_die != NULL) | |
3979 | add_child_die (parent_die, die); | |
3980 | else | |
ef76d03b JW |
3981 | { |
3982 | limbo_die_node *limbo_node; | |
3983 | ||
3984 | limbo_node = (limbo_die_node *) xmalloc (sizeof (limbo_die_node)); | |
3985 | limbo_node->die = die; | |
3986 | limbo_node->next = limbo_die_list; | |
3987 | limbo_die_list = limbo_node; | |
3988 | } | |
71dfc51f | 3989 | |
3f76745e JM |
3990 | return die; |
3991 | } | |
71dfc51f | 3992 | |
3f76745e | 3993 | /* Return the DIE associated with the given type specifier. */ |
71dfc51f | 3994 | |
3f76745e JM |
3995 | static inline dw_die_ref |
3996 | lookup_type_die (type) | |
3997 | register tree type; | |
3998 | { | |
3999 | return (dw_die_ref) TYPE_SYMTAB_POINTER (type); | |
4000 | } | |
e90b62db | 4001 | |
3f76745e | 4002 | /* Equate a DIE to a given type specifier. */ |
71dfc51f | 4003 | |
3f76745e JM |
4004 | static void |
4005 | equate_type_number_to_die (type, type_die) | |
4006 | register tree type; | |
4007 | register dw_die_ref type_die; | |
4008 | { | |
4009 | TYPE_SYMTAB_POINTER (type) = (char *) type_die; | |
4010 | } | |
71dfc51f | 4011 | |
3f76745e | 4012 | /* Return the DIE associated with a given declaration. */ |
71dfc51f | 4013 | |
3f76745e JM |
4014 | static inline dw_die_ref |
4015 | lookup_decl_die (decl) | |
4016 | register tree decl; | |
4017 | { | |
4018 | register unsigned decl_id = DECL_UID (decl); | |
4019 | ||
4020 | return (decl_id < decl_die_table_in_use | |
4021 | ? decl_die_table[decl_id] : NULL); | |
a3f97cbb JW |
4022 | } |
4023 | ||
3f76745e | 4024 | /* Equate a DIE to a particular declaration. */ |
71dfc51f | 4025 | |
3f76745e JM |
4026 | static void |
4027 | equate_decl_number_to_die (decl, decl_die) | |
4028 | register tree decl; | |
4029 | register dw_die_ref decl_die; | |
a3f97cbb | 4030 | { |
3f76745e | 4031 | register unsigned decl_id = DECL_UID (decl); |
d291dd49 | 4032 | register unsigned i; |
3f76745e | 4033 | register unsigned num_allocated; |
d291dd49 | 4034 | |
3f76745e | 4035 | if (decl_id >= decl_die_table_allocated) |
a3f97cbb | 4036 | { |
3f76745e JM |
4037 | num_allocated |
4038 | = ((decl_id + 1 + DECL_DIE_TABLE_INCREMENT - 1) | |
4039 | / DECL_DIE_TABLE_INCREMENT) | |
4040 | * DECL_DIE_TABLE_INCREMENT; | |
4041 | ||
4042 | decl_die_table | |
4043 | = (dw_die_ref *) xrealloc (decl_die_table, | |
4044 | sizeof (dw_die_ref) * num_allocated); | |
4045 | ||
4046 | bzero ((char *) &decl_die_table[decl_die_table_allocated], | |
4047 | (num_allocated - decl_die_table_allocated) * sizeof (dw_die_ref)); | |
4048 | decl_die_table_allocated = num_allocated; | |
a3f97cbb | 4049 | } |
71dfc51f | 4050 | |
3f76745e JM |
4051 | if (decl_id >= decl_die_table_in_use) |
4052 | decl_die_table_in_use = (decl_id + 1); | |
4053 | ||
4054 | decl_die_table[decl_id] = decl_die; | |
a3f97cbb JW |
4055 | } |
4056 | ||
3f76745e JM |
4057 | /* Return a pointer to a newly allocated location description. Location |
4058 | descriptions are simple expression terms that can be strung | |
4059 | together to form more complicated location (address) descriptions. */ | |
71dfc51f | 4060 | |
3f76745e JM |
4061 | static inline dw_loc_descr_ref |
4062 | new_loc_descr (op, oprnd1, oprnd2) | |
4063 | register enum dwarf_location_atom op; | |
4064 | register unsigned long oprnd1; | |
4065 | register unsigned long oprnd2; | |
a3f97cbb | 4066 | { |
3f76745e JM |
4067 | register dw_loc_descr_ref descr |
4068 | = (dw_loc_descr_ref) xmalloc (sizeof (dw_loc_descr_node)); | |
71dfc51f | 4069 | |
3f76745e JM |
4070 | descr->dw_loc_next = NULL; |
4071 | descr->dw_loc_opc = op; | |
4072 | descr->dw_loc_oprnd1.val_class = dw_val_class_unsigned_const; | |
4073 | descr->dw_loc_oprnd1.v.val_unsigned = oprnd1; | |
4074 | descr->dw_loc_oprnd2.val_class = dw_val_class_unsigned_const; | |
4075 | descr->dw_loc_oprnd2.v.val_unsigned = oprnd2; | |
71dfc51f | 4076 | |
3f76745e | 4077 | return descr; |
a3f97cbb | 4078 | } |
71dfc51f | 4079 | |
3f76745e JM |
4080 | /* Add a location description term to a location description expression. */ |
4081 | ||
4082 | static inline void | |
4083 | add_loc_descr (list_head, descr) | |
4084 | register dw_loc_descr_ref *list_head; | |
4085 | register dw_loc_descr_ref descr; | |
a3f97cbb | 4086 | { |
3f76745e | 4087 | register dw_loc_descr_ref *d; |
71dfc51f | 4088 | |
3f76745e JM |
4089 | /* Find the end of the chain. */ |
4090 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) | |
4091 | ; | |
71dfc51f | 4092 | |
3f76745e JM |
4093 | *d = descr; |
4094 | } | |
4095 | \f | |
4096 | /* Keep track of the number of spaces used to indent the | |
4097 | output of the debugging routines that print the structure of | |
4098 | the DIE internal representation. */ | |
4099 | static int print_indent; | |
71dfc51f | 4100 | |
3f76745e JM |
4101 | /* Indent the line the number of spaces given by print_indent. */ |
4102 | ||
4103 | static inline void | |
4104 | print_spaces (outfile) | |
4105 | FILE *outfile; | |
4106 | { | |
4107 | fprintf (outfile, "%*s", print_indent, ""); | |
a3f97cbb JW |
4108 | } |
4109 | ||
3f76745e JM |
4110 | /* Print the information assoaciated with a given DIE, and its children. |
4111 | This routine is a debugging aid only. */ | |
71dfc51f | 4112 | |
a3f97cbb | 4113 | static void |
3f76745e JM |
4114 | print_die (die, outfile) |
4115 | dw_die_ref die; | |
4116 | FILE *outfile; | |
a3f97cbb | 4117 | { |
3f76745e JM |
4118 | register dw_attr_ref a; |
4119 | register dw_die_ref c; | |
71dfc51f | 4120 | |
3f76745e JM |
4121 | print_spaces (outfile); |
4122 | fprintf (outfile, "DIE %4u: %s\n", | |
4123 | die->die_offset, dwarf_tag_name (die->die_tag)); | |
4124 | print_spaces (outfile); | |
4125 | fprintf (outfile, " abbrev id: %u", die->die_abbrev); | |
4126 | fprintf (outfile, " offset: %u\n", die->die_offset); | |
4127 | ||
4128 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
a3f97cbb | 4129 | { |
3f76745e JM |
4130 | print_spaces (outfile); |
4131 | fprintf (outfile, " %s: ", dwarf_attr_name (a->dw_attr)); | |
4132 | ||
4133 | switch (a->dw_attr_val.val_class) | |
4134 | { | |
4135 | case dw_val_class_addr: | |
4136 | fprintf (outfile, "address"); | |
4137 | break; | |
4138 | case dw_val_class_loc: | |
4139 | fprintf (outfile, "location descriptor"); | |
4140 | break; | |
4141 | case dw_val_class_const: | |
4142 | fprintf (outfile, "%d", a->dw_attr_val.v.val_int); | |
4143 | break; | |
4144 | case dw_val_class_unsigned_const: | |
4145 | fprintf (outfile, "%u", a->dw_attr_val.v.val_unsigned); | |
4146 | break; | |
4147 | case dw_val_class_long_long: | |
4148 | fprintf (outfile, "constant (%u,%u)", | |
4149 | a->dw_attr_val.v.val_long_long.hi, | |
4150 | a->dw_attr_val.v.val_long_long.low); | |
4151 | break; | |
4152 | case dw_val_class_float: | |
4153 | fprintf (outfile, "floating-point constant"); | |
4154 | break; | |
4155 | case dw_val_class_flag: | |
4156 | fprintf (outfile, "%u", a->dw_attr_val.v.val_flag); | |
4157 | break; | |
4158 | case dw_val_class_die_ref: | |
4159 | if (a->dw_attr_val.v.val_die_ref != NULL) | |
4160 | fprintf (outfile, "die -> %u", | |
4161 | a->dw_attr_val.v.val_die_ref->die_offset); | |
4162 | else | |
4163 | fprintf (outfile, "die -> <null>"); | |
4164 | break; | |
4165 | case dw_val_class_lbl_id: | |
4166 | fprintf (outfile, "label: %s", a->dw_attr_val.v.val_lbl_id); | |
4167 | break; | |
4168 | case dw_val_class_section_offset: | |
4169 | fprintf (outfile, "section: %s", a->dw_attr_val.v.val_section); | |
4170 | break; | |
4171 | case dw_val_class_str: | |
4172 | if (a->dw_attr_val.v.val_str != NULL) | |
4173 | fprintf (outfile, "\"%s\"", a->dw_attr_val.v.val_str); | |
4174 | else | |
4175 | fprintf (outfile, "<null>"); | |
4176 | break; | |
e9a25f70 JL |
4177 | default: |
4178 | break; | |
3f76745e JM |
4179 | } |
4180 | ||
4181 | fprintf (outfile, "\n"); | |
4182 | } | |
4183 | ||
4184 | if (die->die_child != NULL) | |
4185 | { | |
4186 | print_indent += 4; | |
4187 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4188 | print_die (c, outfile); | |
71dfc51f | 4189 | |
3f76745e | 4190 | print_indent -= 4; |
a3f97cbb | 4191 | } |
a3f97cbb JW |
4192 | } |
4193 | ||
3f76745e JM |
4194 | /* Print the contents of the source code line number correspondence table. |
4195 | This routine is a debugging aid only. */ | |
71dfc51f | 4196 | |
3f76745e JM |
4197 | static void |
4198 | print_dwarf_line_table (outfile) | |
4199 | FILE *outfile; | |
a3f97cbb | 4200 | { |
3f76745e JM |
4201 | register unsigned i; |
4202 | register dw_line_info_ref line_info; | |
4203 | ||
4204 | fprintf (outfile, "\n\nDWARF source line information\n"); | |
4205 | for (i = 1; i < line_info_table_in_use; ++i) | |
a3f97cbb | 4206 | { |
3f76745e JM |
4207 | line_info = &line_info_table[i]; |
4208 | fprintf (outfile, "%5d: ", i); | |
4209 | fprintf (outfile, "%-20s", file_table[line_info->dw_file_num]); | |
4210 | fprintf (outfile, "%6d", line_info->dw_line_num); | |
4211 | fprintf (outfile, "\n"); | |
a3f97cbb | 4212 | } |
3f76745e JM |
4213 | |
4214 | fprintf (outfile, "\n\n"); | |
f37230f0 JM |
4215 | } |
4216 | ||
3f76745e JM |
4217 | /* Print the information collected for a given DIE. */ |
4218 | ||
4219 | void | |
4220 | debug_dwarf_die (die) | |
4221 | dw_die_ref die; | |
4222 | { | |
4223 | print_die (die, stderr); | |
4224 | } | |
4225 | ||
4226 | /* Print all DWARF information collected for the compilation unit. | |
4227 | This routine is a debugging aid only. */ | |
4228 | ||
4229 | void | |
4230 | debug_dwarf () | |
4231 | { | |
4232 | print_indent = 0; | |
4233 | print_die (comp_unit_die, stderr); | |
4234 | print_dwarf_line_table (stderr); | |
4235 | } | |
4236 | \f | |
4237 | /* Traverse the DIE, and add a sibling attribute if it may have the | |
4238 | effect of speeding up access to siblings. To save some space, | |
4239 | avoid generating sibling attributes for DIE's without children. */ | |
71dfc51f | 4240 | |
f37230f0 | 4241 | static void |
3f76745e JM |
4242 | add_sibling_attributes(die) |
4243 | register dw_die_ref die; | |
f37230f0 | 4244 | { |
3f76745e JM |
4245 | register dw_die_ref c; |
4246 | register dw_attr_ref attr; | |
4247 | if (die != comp_unit_die && die->die_child != NULL) | |
4248 | { | |
4249 | attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
4250 | attr->dw_attr_next = NULL; | |
4251 | attr->dw_attr = DW_AT_sibling; | |
4252 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
4253 | attr->dw_attr_val.v.val_die_ref = die->die_sib; | |
71dfc51f | 4254 | |
3f76745e JM |
4255 | /* Add the sibling link to the front of the attribute list. */ |
4256 | attr->dw_attr_next = die->die_attr; | |
4257 | if (die->die_attr == NULL) | |
4258 | die->die_attr_last = attr; | |
71dfc51f | 4259 | |
3f76745e JM |
4260 | die->die_attr = attr; |
4261 | } | |
4262 | ||
4263 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4264 | add_sibling_attributes (c); | |
a3f97cbb JW |
4265 | } |
4266 | ||
3f76745e JM |
4267 | /* The format of each DIE (and its attribute value pairs) |
4268 | is encoded in an abbreviation table. This routine builds the | |
4269 | abbreviation table and assigns a unique abbreviation id for | |
4270 | each abbreviation entry. The children of each die are visited | |
4271 | recursively. */ | |
71dfc51f | 4272 | |
a3f97cbb | 4273 | static void |
3f76745e JM |
4274 | build_abbrev_table (die) |
4275 | register dw_die_ref die; | |
a3f97cbb | 4276 | { |
3f76745e JM |
4277 | register unsigned long abbrev_id; |
4278 | register unsigned long n_alloc; | |
4279 | register dw_die_ref c; | |
4280 | register dw_attr_ref d_attr, a_attr; | |
a3f97cbb JW |
4281 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) |
4282 | { | |
4283 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 4284 | |
3f76745e JM |
4285 | if (abbrev->die_tag == die->die_tag) |
4286 | { | |
4287 | if ((abbrev->die_child != NULL) == (die->die_child != NULL)) | |
4288 | { | |
4289 | a_attr = abbrev->die_attr; | |
4290 | d_attr = die->die_attr; | |
71dfc51f | 4291 | |
3f76745e JM |
4292 | while (a_attr != NULL && d_attr != NULL) |
4293 | { | |
4294 | if ((a_attr->dw_attr != d_attr->dw_attr) | |
4295 | || (value_format (&a_attr->dw_attr_val) | |
4296 | != value_format (&d_attr->dw_attr_val))) | |
4297 | break; | |
71dfc51f | 4298 | |
3f76745e JM |
4299 | a_attr = a_attr->dw_attr_next; |
4300 | d_attr = d_attr->dw_attr_next; | |
4301 | } | |
71dfc51f | 4302 | |
3f76745e JM |
4303 | if (a_attr == NULL && d_attr == NULL) |
4304 | break; | |
4305 | } | |
4306 | } | |
4307 | } | |
71dfc51f | 4308 | |
3f76745e JM |
4309 | if (abbrev_id >= abbrev_die_table_in_use) |
4310 | { | |
4311 | if (abbrev_die_table_in_use >= abbrev_die_table_allocated) | |
a3f97cbb | 4312 | { |
3f76745e JM |
4313 | n_alloc = abbrev_die_table_allocated + ABBREV_DIE_TABLE_INCREMENT; |
4314 | abbrev_die_table | |
c760091a | 4315 | = (dw_die_ref *) xrealloc (abbrev_die_table, |
966f5dff | 4316 | sizeof (dw_die_ref) * n_alloc); |
71dfc51f | 4317 | |
3f76745e JM |
4318 | bzero ((char *) &abbrev_die_table[abbrev_die_table_allocated], |
4319 | (n_alloc - abbrev_die_table_allocated) * sizeof (dw_die_ref)); | |
4320 | abbrev_die_table_allocated = n_alloc; | |
a3f97cbb | 4321 | } |
71dfc51f | 4322 | |
3f76745e JM |
4323 | ++abbrev_die_table_in_use; |
4324 | abbrev_die_table[abbrev_id] = die; | |
a3f97cbb | 4325 | } |
3f76745e JM |
4326 | |
4327 | die->die_abbrev = abbrev_id; | |
4328 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4329 | build_abbrev_table (c); | |
a3f97cbb | 4330 | } |
3f76745e JM |
4331 | \f |
4332 | /* Return the size of a string, including the null byte. */ | |
a3f97cbb | 4333 | |
3f76745e JM |
4334 | static unsigned long |
4335 | size_of_string (str) | |
4336 | register char *str; | |
4337 | { | |
4338 | register unsigned long size = 0; | |
4339 | register unsigned long slen = strlen (str); | |
4340 | register unsigned long i; | |
4341 | register unsigned c; | |
71dfc51f | 4342 | |
3f76745e JM |
4343 | for (i = 0; i < slen; ++i) |
4344 | { | |
4345 | c = str[i]; | |
4346 | if (c == '\\') | |
4347 | ++i; | |
4348 | ||
4349 | size += 1; | |
4350 | } | |
4351 | ||
4352 | /* Null terminator. */ | |
4353 | size += 1; | |
4354 | return size; | |
4355 | } | |
4356 | ||
4357 | /* Return the size of a location descriptor. */ | |
4358 | ||
4359 | static unsigned long | |
4360 | size_of_loc_descr (loc) | |
a3f97cbb JW |
4361 | register dw_loc_descr_ref loc; |
4362 | { | |
3f76745e | 4363 | register unsigned long size = 1; |
71dfc51f | 4364 | |
a3f97cbb JW |
4365 | switch (loc->dw_loc_opc) |
4366 | { | |
4367 | case DW_OP_addr: | |
3f76745e | 4368 | size += PTR_SIZE; |
a3f97cbb JW |
4369 | break; |
4370 | case DW_OP_const1u: | |
4371 | case DW_OP_const1s: | |
3f76745e | 4372 | size += 1; |
a3f97cbb JW |
4373 | break; |
4374 | case DW_OP_const2u: | |
4375 | case DW_OP_const2s: | |
3f76745e | 4376 | size += 2; |
a3f97cbb JW |
4377 | break; |
4378 | case DW_OP_const4u: | |
4379 | case DW_OP_const4s: | |
3f76745e | 4380 | size += 4; |
a3f97cbb JW |
4381 | break; |
4382 | case DW_OP_const8u: | |
4383 | case DW_OP_const8s: | |
3f76745e | 4384 | size += 8; |
a3f97cbb JW |
4385 | break; |
4386 | case DW_OP_constu: | |
3f76745e | 4387 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4388 | break; |
4389 | case DW_OP_consts: | |
3f76745e | 4390 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4391 | break; |
4392 | case DW_OP_pick: | |
3f76745e | 4393 | size += 1; |
a3f97cbb JW |
4394 | break; |
4395 | case DW_OP_plus_uconst: | |
3f76745e | 4396 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4397 | break; |
4398 | case DW_OP_skip: | |
4399 | case DW_OP_bra: | |
3f76745e | 4400 | size += 2; |
a3f97cbb JW |
4401 | break; |
4402 | case DW_OP_breg0: | |
4403 | case DW_OP_breg1: | |
4404 | case DW_OP_breg2: | |
4405 | case DW_OP_breg3: | |
4406 | case DW_OP_breg4: | |
4407 | case DW_OP_breg5: | |
4408 | case DW_OP_breg6: | |
4409 | case DW_OP_breg7: | |
4410 | case DW_OP_breg8: | |
4411 | case DW_OP_breg9: | |
4412 | case DW_OP_breg10: | |
4413 | case DW_OP_breg11: | |
4414 | case DW_OP_breg12: | |
4415 | case DW_OP_breg13: | |
4416 | case DW_OP_breg14: | |
4417 | case DW_OP_breg15: | |
4418 | case DW_OP_breg16: | |
4419 | case DW_OP_breg17: | |
4420 | case DW_OP_breg18: | |
4421 | case DW_OP_breg19: | |
4422 | case DW_OP_breg20: | |
4423 | case DW_OP_breg21: | |
4424 | case DW_OP_breg22: | |
4425 | case DW_OP_breg23: | |
4426 | case DW_OP_breg24: | |
4427 | case DW_OP_breg25: | |
4428 | case DW_OP_breg26: | |
4429 | case DW_OP_breg27: | |
4430 | case DW_OP_breg28: | |
4431 | case DW_OP_breg29: | |
4432 | case DW_OP_breg30: | |
4433 | case DW_OP_breg31: | |
3f76745e | 4434 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4435 | break; |
4436 | case DW_OP_regx: | |
3f76745e | 4437 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4438 | break; |
4439 | case DW_OP_fbreg: | |
3f76745e | 4440 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4441 | break; |
4442 | case DW_OP_bregx: | |
3f76745e JM |
4443 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
4444 | size += size_of_sleb128 (loc->dw_loc_oprnd2.v.val_int); | |
a3f97cbb JW |
4445 | break; |
4446 | case DW_OP_piece: | |
3f76745e | 4447 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4448 | break; |
4449 | case DW_OP_deref_size: | |
4450 | case DW_OP_xderef_size: | |
3f76745e | 4451 | size += 1; |
a3f97cbb JW |
4452 | break; |
4453 | default: | |
4454 | break; | |
4455 | } | |
3f76745e JM |
4456 | |
4457 | return size; | |
a3f97cbb JW |
4458 | } |
4459 | ||
3f76745e | 4460 | /* Return the size of a series of location descriptors. */ |
71dfc51f | 4461 | |
a3f97cbb | 4462 | static unsigned long |
3f76745e JM |
4463 | size_of_locs (loc) |
4464 | register dw_loc_descr_ref loc; | |
a3f97cbb | 4465 | { |
3f76745e | 4466 | register unsigned long size = 0; |
71dfc51f | 4467 | |
3f76745e JM |
4468 | for (; loc != NULL; loc = loc->dw_loc_next) |
4469 | size += size_of_loc_descr (loc); | |
4470 | ||
4471 | return size; | |
4472 | } | |
4473 | ||
4474 | /* Return the power-of-two number of bytes necessary to represent VALUE. */ | |
4475 | ||
4476 | static int | |
4477 | constant_size (value) | |
4478 | long unsigned value; | |
4479 | { | |
4480 | int log; | |
4481 | ||
4482 | if (value == 0) | |
4483 | log = 0; | |
a3f97cbb | 4484 | else |
3f76745e | 4485 | log = floor_log2 (value); |
71dfc51f | 4486 | |
3f76745e JM |
4487 | log = log / 8; |
4488 | log = 1 << (floor_log2 (log) + 1); | |
4489 | ||
4490 | return log; | |
a3f97cbb JW |
4491 | } |
4492 | ||
3f76745e JM |
4493 | /* Return the size of a DIE, as it is represented in the |
4494 | .debug_info section. */ | |
71dfc51f | 4495 | |
3f76745e JM |
4496 | static unsigned long |
4497 | size_of_die (die) | |
a3f97cbb JW |
4498 | register dw_die_ref die; |
4499 | { | |
3f76745e | 4500 | register unsigned long size = 0; |
a3f97cbb | 4501 | register dw_attr_ref a; |
71dfc51f | 4502 | |
3f76745e | 4503 | size += size_of_uleb128 (die->die_abbrev); |
a3f97cbb JW |
4504 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
4505 | { | |
4506 | switch (a->dw_attr_val.val_class) | |
4507 | { | |
4508 | case dw_val_class_addr: | |
3f76745e | 4509 | size += PTR_SIZE; |
a3f97cbb JW |
4510 | break; |
4511 | case dw_val_class_loc: | |
3f76745e JM |
4512 | { |
4513 | register unsigned long lsize | |
4514 | = size_of_locs (a->dw_attr_val.v.val_loc); | |
71dfc51f | 4515 | |
3f76745e JM |
4516 | /* Block length. */ |
4517 | size += constant_size (lsize); | |
4518 | size += lsize; | |
4519 | } | |
a3f97cbb JW |
4520 | break; |
4521 | case dw_val_class_const: | |
3f76745e | 4522 | size += 4; |
a3f97cbb JW |
4523 | break; |
4524 | case dw_val_class_unsigned_const: | |
3f76745e | 4525 | size += constant_size (a->dw_attr_val.v.val_unsigned); |
a3f97cbb | 4526 | break; |
469ac993 | 4527 | case dw_val_class_long_long: |
3f76745e | 4528 | size += 1 + 8; /* block */ |
469ac993 JM |
4529 | break; |
4530 | case dw_val_class_float: | |
3f76745e | 4531 | size += 1 + a->dw_attr_val.v.val_float.length * 4; /* block */ |
a3f97cbb JW |
4532 | break; |
4533 | case dw_val_class_flag: | |
3f76745e | 4534 | size += 1; |
a3f97cbb JW |
4535 | break; |
4536 | case dw_val_class_die_ref: | |
3f76745e | 4537 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
4538 | break; |
4539 | case dw_val_class_fde_ref: | |
3f76745e | 4540 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
4541 | break; |
4542 | case dw_val_class_lbl_id: | |
3f76745e JM |
4543 | size += PTR_SIZE; |
4544 | break; | |
4545 | case dw_val_class_section_offset: | |
4546 | size += DWARF_OFFSET_SIZE; | |
4547 | break; | |
4548 | case dw_val_class_str: | |
4549 | size += size_of_string (a->dw_attr_val.v.val_str); | |
4550 | break; | |
4551 | default: | |
4552 | abort (); | |
4553 | } | |
a3f97cbb | 4554 | } |
3f76745e JM |
4555 | |
4556 | return size; | |
a3f97cbb JW |
4557 | } |
4558 | ||
3f76745e JM |
4559 | /* Size the debgging information associted with a given DIE. |
4560 | Visits the DIE's children recursively. Updates the global | |
4561 | variable next_die_offset, on each time through. Uses the | |
4562 | current value of next_die_offset to updete the die_offset | |
4563 | field in each DIE. */ | |
71dfc51f | 4564 | |
a3f97cbb | 4565 | static void |
3f76745e JM |
4566 | calc_die_sizes (die) |
4567 | dw_die_ref die; | |
a3f97cbb | 4568 | { |
3f76745e JM |
4569 | register dw_die_ref c; |
4570 | die->die_offset = next_die_offset; | |
4571 | next_die_offset += size_of_die (die); | |
71dfc51f | 4572 | |
3f76745e JM |
4573 | for (c = die->die_child; c != NULL; c = c->die_sib) |
4574 | calc_die_sizes (c); | |
71dfc51f | 4575 | |
3f76745e JM |
4576 | if (die->die_child != NULL) |
4577 | /* Count the null byte used to terminate sibling lists. */ | |
4578 | next_die_offset += 1; | |
a3f97cbb JW |
4579 | } |
4580 | ||
3f76745e JM |
4581 | /* Return the size of the line information prolog generated for the |
4582 | compilation unit. */ | |
469ac993 | 4583 | |
3f76745e JM |
4584 | static unsigned long |
4585 | size_of_line_prolog () | |
a94dbf2c | 4586 | { |
3f76745e JM |
4587 | register unsigned long size; |
4588 | register unsigned long ft_index; | |
a94dbf2c | 4589 | |
3f76745e | 4590 | size = DWARF_LINE_PROLOG_HEADER_SIZE; |
469ac993 | 4591 | |
3f76745e JM |
4592 | /* Count the size of the table giving number of args for each |
4593 | standard opcode. */ | |
4594 | size += DWARF_LINE_OPCODE_BASE - 1; | |
71dfc51f | 4595 | |
3f76745e JM |
4596 | /* Include directory table is empty (at present). Count only the |
4597 | the null byte used to terminate the table. */ | |
4598 | size += 1; | |
71dfc51f | 4599 | |
3f76745e JM |
4600 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
4601 | { | |
4602 | /* File name entry. */ | |
4603 | size += size_of_string (file_table[ft_index]); | |
a94dbf2c | 4604 | |
3f76745e JM |
4605 | /* Include directory index. */ |
4606 | size += size_of_uleb128 (0); | |
a94dbf2c | 4607 | |
3f76745e JM |
4608 | /* Modification time. */ |
4609 | size += size_of_uleb128 (0); | |
71dfc51f | 4610 | |
3f76745e JM |
4611 | /* File length in bytes. */ |
4612 | size += size_of_uleb128 (0); | |
a94dbf2c | 4613 | } |
71dfc51f | 4614 | |
3f76745e JM |
4615 | /* Count the file table terminator. */ |
4616 | size += 1; | |
4617 | return size; | |
a94dbf2c JM |
4618 | } |
4619 | ||
3f76745e JM |
4620 | /* Return the size of the line information generated for this |
4621 | compilation unit. */ | |
71dfc51f | 4622 | |
3f76745e JM |
4623 | static unsigned long |
4624 | size_of_line_info () | |
a94dbf2c | 4625 | { |
3f76745e JM |
4626 | register unsigned long size; |
4627 | register unsigned long lt_index; | |
4628 | register unsigned long current_line; | |
4629 | register long line_offset; | |
4630 | register long line_delta; | |
4631 | register unsigned long current_file; | |
4632 | register unsigned long function; | |
f19a6894 JW |
4633 | unsigned long size_of_set_address; |
4634 | ||
4635 | /* Size of a DW_LNE_set_address instruction. */ | |
4636 | size_of_set_address = 1 + size_of_uleb128 (1 + PTR_SIZE) + 1 + PTR_SIZE; | |
a94dbf2c | 4637 | |
3f76745e JM |
4638 | /* Version number. */ |
4639 | size = 2; | |
71dfc51f | 4640 | |
3f76745e JM |
4641 | /* Prolog length specifier. */ |
4642 | size += DWARF_OFFSET_SIZE; | |
71dfc51f | 4643 | |
3f76745e JM |
4644 | /* Prolog. */ |
4645 | size += size_of_line_prolog (); | |
a94dbf2c | 4646 | |
3f76745e | 4647 | /* Set address register instruction. */ |
f19a6894 | 4648 | size += size_of_set_address; |
71dfc51f | 4649 | |
3f76745e JM |
4650 | current_file = 1; |
4651 | current_line = 1; | |
4652 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) | |
a94dbf2c | 4653 | { |
3f76745e JM |
4654 | register dw_line_info_ref line_info; |
4655 | ||
4656 | /* Advance pc instruction. */ | |
f19a6894 JW |
4657 | /* ??? See the DW_LNS_advance_pc comment in output_line_info. */ |
4658 | if (0) | |
4659 | size += 1 + 2; | |
4660 | else | |
4661 | size += size_of_set_address; | |
4662 | ||
3f76745e JM |
4663 | line_info = &line_info_table[lt_index]; |
4664 | if (line_info->dw_file_num != current_file) | |
4665 | { | |
4666 | /* Set file number instruction. */ | |
4667 | size += 1; | |
4668 | current_file = line_info->dw_file_num; | |
4669 | size += size_of_uleb128 (current_file); | |
4670 | } | |
4671 | ||
4672 | if (line_info->dw_line_num != current_line) | |
4673 | { | |
4674 | line_offset = line_info->dw_line_num - current_line; | |
4675 | line_delta = line_offset - DWARF_LINE_BASE; | |
4676 | current_line = line_info->dw_line_num; | |
4677 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
4678 | /* 1-byte special line number instruction. */ | |
4679 | size += 1; | |
4680 | else | |
4681 | { | |
4682 | /* Advance line instruction. */ | |
4683 | size += 1; | |
4684 | size += size_of_sleb128 (line_offset); | |
4685 | /* Generate line entry instruction. */ | |
4686 | size += 1; | |
4687 | } | |
4688 | } | |
a94dbf2c | 4689 | } |
a94dbf2c | 4690 | |
3f76745e | 4691 | /* Advance pc instruction. */ |
f19a6894 JW |
4692 | if (0) |
4693 | size += 1 + 2; | |
4694 | else | |
4695 | size += size_of_set_address; | |
a94dbf2c | 4696 | |
3f76745e JM |
4697 | /* End of line number info. marker. */ |
4698 | size += 1 + size_of_uleb128 (1) + 1; | |
a94dbf2c | 4699 | |
3f76745e JM |
4700 | function = 0; |
4701 | current_file = 1; | |
4702 | current_line = 1; | |
4703 | for (lt_index = 0; lt_index < separate_line_info_table_in_use; ) | |
4704 | { | |
4705 | register dw_separate_line_info_ref line_info | |
4706 | = &separate_line_info_table[lt_index]; | |
4707 | if (function != line_info->function) | |
4708 | { | |
4709 | function = line_info->function; | |
4710 | /* Set address register instruction. */ | |
f19a6894 | 4711 | size += size_of_set_address; |
3f76745e JM |
4712 | } |
4713 | else | |
f19a6894 JW |
4714 | { |
4715 | /* Advance pc instruction. */ | |
4716 | if (0) | |
4717 | size += 1 + 2; | |
4718 | else | |
4719 | size += size_of_set_address; | |
4720 | } | |
3f76745e JM |
4721 | |
4722 | if (line_info->dw_file_num != current_file) | |
4723 | { | |
4724 | /* Set file number instruction. */ | |
4725 | size += 1; | |
4726 | current_file = line_info->dw_file_num; | |
4727 | size += size_of_uleb128 (current_file); | |
4728 | } | |
4729 | ||
4730 | if (line_info->dw_line_num != current_line) | |
4731 | { | |
4732 | line_offset = line_info->dw_line_num - current_line; | |
4733 | line_delta = line_offset - DWARF_LINE_BASE; | |
4734 | current_line = line_info->dw_line_num; | |
4735 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
4736 | /* 1-byte special line number instruction. */ | |
4737 | size += 1; | |
4738 | else | |
4739 | { | |
4740 | /* Advance line instruction. */ | |
4741 | size += 1; | |
4742 | size += size_of_sleb128 (line_offset); | |
a94dbf2c | 4743 | |
3f76745e JM |
4744 | /* Generate line entry instruction. */ |
4745 | size += 1; | |
4746 | } | |
4747 | } | |
a94dbf2c | 4748 | |
3f76745e | 4749 | ++lt_index; |
a94dbf2c | 4750 | |
3f76745e JM |
4751 | /* If we're done with a function, end its sequence. */ |
4752 | if (lt_index == separate_line_info_table_in_use | |
4753 | || separate_line_info_table[lt_index].function != function) | |
4754 | { | |
4755 | current_file = 1; | |
4756 | current_line = 1; | |
71dfc51f | 4757 | |
3f76745e | 4758 | /* Advance pc instruction. */ |
f19a6894 JW |
4759 | if (0) |
4760 | size += 1 + 2; | |
4761 | else | |
4762 | size += size_of_set_address; | |
71dfc51f | 4763 | |
3f76745e JM |
4764 | /* End of line number info. marker. */ |
4765 | size += 1 + size_of_uleb128 (1) + 1; | |
4766 | } | |
a94dbf2c JM |
4767 | } |
4768 | ||
3f76745e | 4769 | return size; |
a94dbf2c JM |
4770 | } |
4771 | ||
3f76745e JM |
4772 | /* Return the size of the .debug_pubnames table generated for the |
4773 | compilation unit. */ | |
a94dbf2c | 4774 | |
3f76745e JM |
4775 | static unsigned long |
4776 | size_of_pubnames () | |
a94dbf2c | 4777 | { |
3f76745e JM |
4778 | register unsigned long size; |
4779 | register unsigned i; | |
469ac993 | 4780 | |
3f76745e JM |
4781 | size = DWARF_PUBNAMES_HEADER_SIZE; |
4782 | for (i = 0; i < pubname_table_in_use; ++i) | |
a94dbf2c | 4783 | { |
3f76745e JM |
4784 | register pubname_ref p = &pubname_table[i]; |
4785 | size += DWARF_OFFSET_SIZE + size_of_string (p->name); | |
a94dbf2c JM |
4786 | } |
4787 | ||
3f76745e JM |
4788 | size += DWARF_OFFSET_SIZE; |
4789 | return size; | |
a94dbf2c JM |
4790 | } |
4791 | ||
3f76745e | 4792 | /* Return the size of the information in the .debug_aranges seciton. */ |
469ac993 | 4793 | |
3f76745e JM |
4794 | static unsigned long |
4795 | size_of_aranges () | |
469ac993 | 4796 | { |
3f76745e | 4797 | register unsigned long size; |
469ac993 | 4798 | |
3f76745e | 4799 | size = DWARF_ARANGES_HEADER_SIZE; |
469ac993 | 4800 | |
3f76745e JM |
4801 | /* Count the address/length pair for this compilation unit. */ |
4802 | size += 2 * PTR_SIZE; | |
4803 | size += 2 * PTR_SIZE * arange_table_in_use; | |
469ac993 | 4804 | |
3f76745e JM |
4805 | /* Count the two zero words used to terminated the address range table. */ |
4806 | size += 2 * PTR_SIZE; | |
4807 | return size; | |
4808 | } | |
4809 | \f | |
4810 | /* Select the encoding of an attribute value. */ | |
4811 | ||
4812 | static enum dwarf_form | |
4813 | value_format (v) | |
4814 | dw_val_ref v; | |
4815 | { | |
4816 | switch (v->val_class) | |
469ac993 | 4817 | { |
3f76745e JM |
4818 | case dw_val_class_addr: |
4819 | return DW_FORM_addr; | |
4820 | case dw_val_class_loc: | |
4821 | switch (constant_size (size_of_locs (v->v.val_loc))) | |
469ac993 | 4822 | { |
3f76745e JM |
4823 | case 1: |
4824 | return DW_FORM_block1; | |
4825 | case 2: | |
4826 | return DW_FORM_block2; | |
469ac993 JM |
4827 | default: |
4828 | abort (); | |
4829 | } | |
3f76745e JM |
4830 | case dw_val_class_const: |
4831 | return DW_FORM_data4; | |
4832 | case dw_val_class_unsigned_const: | |
4833 | switch (constant_size (v->v.val_unsigned)) | |
4834 | { | |
4835 | case 1: | |
4836 | return DW_FORM_data1; | |
4837 | case 2: | |
4838 | return DW_FORM_data2; | |
4839 | case 4: | |
4840 | return DW_FORM_data4; | |
4841 | case 8: | |
4842 | return DW_FORM_data8; | |
4843 | default: | |
4844 | abort (); | |
4845 | } | |
4846 | case dw_val_class_long_long: | |
4847 | return DW_FORM_block1; | |
4848 | case dw_val_class_float: | |
4849 | return DW_FORM_block1; | |
4850 | case dw_val_class_flag: | |
4851 | return DW_FORM_flag; | |
4852 | case dw_val_class_die_ref: | |
4853 | return DW_FORM_ref; | |
4854 | case dw_val_class_fde_ref: | |
4855 | return DW_FORM_data; | |
4856 | case dw_val_class_lbl_id: | |
4857 | return DW_FORM_addr; | |
4858 | case dw_val_class_section_offset: | |
4859 | return DW_FORM_data; | |
4860 | case dw_val_class_str: | |
4861 | return DW_FORM_string; | |
469ac993 JM |
4862 | default: |
4863 | abort (); | |
4864 | } | |
a94dbf2c JM |
4865 | } |
4866 | ||
3f76745e | 4867 | /* Output the encoding of an attribute value. */ |
469ac993 | 4868 | |
3f76745e JM |
4869 | static void |
4870 | output_value_format (v) | |
4871 | dw_val_ref v; | |
a94dbf2c | 4872 | { |
3f76745e | 4873 | enum dwarf_form form = value_format (v); |
71dfc51f | 4874 | |
3f76745e | 4875 | output_uleb128 (form); |
c5cec899 | 4876 | if (flag_debug_asm) |
3f76745e | 4877 | fprintf (asm_out_file, " (%s)", dwarf_form_name (form)); |
141719a8 | 4878 | |
3f76745e JM |
4879 | fputc ('\n', asm_out_file); |
4880 | } | |
469ac993 | 4881 | |
3f76745e JM |
4882 | /* Output the .debug_abbrev section which defines the DIE abbreviation |
4883 | table. */ | |
469ac993 | 4884 | |
3f76745e JM |
4885 | static void |
4886 | output_abbrev_section () | |
4887 | { | |
4888 | unsigned long abbrev_id; | |
71dfc51f | 4889 | |
3f76745e JM |
4890 | dw_attr_ref a_attr; |
4891 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) | |
4892 | { | |
4893 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 4894 | |
3f76745e | 4895 | output_uleb128 (abbrev_id); |
c5cec899 | 4896 | if (flag_debug_asm) |
3f76745e | 4897 | fprintf (asm_out_file, " (abbrev code)"); |
469ac993 | 4898 | |
3f76745e JM |
4899 | fputc ('\n', asm_out_file); |
4900 | output_uleb128 (abbrev->die_tag); | |
c5cec899 | 4901 | if (flag_debug_asm) |
3f76745e JM |
4902 | fprintf (asm_out_file, " (TAG: %s)", |
4903 | dwarf_tag_name (abbrev->die_tag)); | |
71dfc51f | 4904 | |
3f76745e JM |
4905 | fputc ('\n', asm_out_file); |
4906 | fprintf (asm_out_file, "\t%s\t0x%x", ASM_BYTE_OP, | |
4907 | abbrev->die_child != NULL ? DW_children_yes : DW_children_no); | |
469ac993 | 4908 | |
c5cec899 | 4909 | if (flag_debug_asm) |
3f76745e JM |
4910 | fprintf (asm_out_file, "\t%s %s", |
4911 | ASM_COMMENT_START, | |
4912 | (abbrev->die_child != NULL | |
4913 | ? "DW_children_yes" : "DW_children_no")); | |
4914 | ||
4915 | fputc ('\n', asm_out_file); | |
4916 | ||
4917 | for (a_attr = abbrev->die_attr; a_attr != NULL; | |
4918 | a_attr = a_attr->dw_attr_next) | |
4919 | { | |
4920 | output_uleb128 (a_attr->dw_attr); | |
c5cec899 | 4921 | if (flag_debug_asm) |
3f76745e JM |
4922 | fprintf (asm_out_file, " (%s)", |
4923 | dwarf_attr_name (a_attr->dw_attr)); | |
4924 | ||
4925 | fputc ('\n', asm_out_file); | |
4926 | output_value_format (&a_attr->dw_attr_val); | |
469ac993 | 4927 | } |
469ac993 | 4928 | |
3f76745e | 4929 | fprintf (asm_out_file, "\t%s\t0,0\n", ASM_BYTE_OP); |
469ac993 | 4930 | } |
a94dbf2c JM |
4931 | } |
4932 | ||
3f76745e | 4933 | /* Output location description stack opcode's operands (if any). */ |
71dfc51f | 4934 | |
3f76745e JM |
4935 | static void |
4936 | output_loc_operands (loc) | |
4937 | register dw_loc_descr_ref loc; | |
a3f97cbb | 4938 | { |
3f76745e JM |
4939 | register dw_val_ref val1 = &loc->dw_loc_oprnd1; |
4940 | register dw_val_ref val2 = &loc->dw_loc_oprnd2; | |
71dfc51f | 4941 | |
3f76745e | 4942 | switch (loc->dw_loc_opc) |
a3f97cbb | 4943 | { |
3f76745e JM |
4944 | case DW_OP_addr: |
4945 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, val1->v.val_addr); | |
4946 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4947 | break; |
3f76745e JM |
4948 | case DW_OP_const1u: |
4949 | case DW_OP_const1s: | |
4950 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
4951 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4952 | break; |
3f76745e JM |
4953 | case DW_OP_const2u: |
4954 | case DW_OP_const2s: | |
4955 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
4956 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4957 | break; |
3f76745e JM |
4958 | case DW_OP_const4u: |
4959 | case DW_OP_const4s: | |
4960 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, val1->v.val_int); | |
4961 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4962 | break; |
3f76745e JM |
4963 | case DW_OP_const8u: |
4964 | case DW_OP_const8s: | |
4965 | abort (); | |
4966 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4967 | break; |
3f76745e JM |
4968 | case DW_OP_constu: |
4969 | output_uleb128 (val1->v.val_unsigned); | |
4970 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4971 | break; |
3f76745e JM |
4972 | case DW_OP_consts: |
4973 | output_sleb128 (val1->v.val_int); | |
4974 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4975 | break; |
3f76745e JM |
4976 | case DW_OP_pick: |
4977 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_int); | |
4978 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4979 | break; |
3f76745e JM |
4980 | case DW_OP_plus_uconst: |
4981 | output_uleb128 (val1->v.val_unsigned); | |
4982 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4983 | break; |
3f76745e JM |
4984 | case DW_OP_skip: |
4985 | case DW_OP_bra: | |
4986 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
4987 | fputc ('\n', asm_out_file); | |
a3f97cbb | 4988 | break; |
3f76745e JM |
4989 | case DW_OP_breg0: |
4990 | case DW_OP_breg1: | |
4991 | case DW_OP_breg2: | |
4992 | case DW_OP_breg3: | |
4993 | case DW_OP_breg4: | |
4994 | case DW_OP_breg5: | |
4995 | case DW_OP_breg6: | |
4996 | case DW_OP_breg7: | |
4997 | case DW_OP_breg8: | |
4998 | case DW_OP_breg9: | |
4999 | case DW_OP_breg10: | |
5000 | case DW_OP_breg11: | |
5001 | case DW_OP_breg12: | |
5002 | case DW_OP_breg13: | |
5003 | case DW_OP_breg14: | |
5004 | case DW_OP_breg15: | |
5005 | case DW_OP_breg16: | |
5006 | case DW_OP_breg17: | |
5007 | case DW_OP_breg18: | |
5008 | case DW_OP_breg19: | |
5009 | case DW_OP_breg20: | |
5010 | case DW_OP_breg21: | |
5011 | case DW_OP_breg22: | |
5012 | case DW_OP_breg23: | |
5013 | case DW_OP_breg24: | |
5014 | case DW_OP_breg25: | |
5015 | case DW_OP_breg26: | |
5016 | case DW_OP_breg27: | |
5017 | case DW_OP_breg28: | |
5018 | case DW_OP_breg29: | |
5019 | case DW_OP_breg30: | |
5020 | case DW_OP_breg31: | |
5021 | output_sleb128 (val1->v.val_int); | |
5022 | fputc ('\n', asm_out_file); | |
5023 | break; | |
5024 | case DW_OP_regx: | |
5025 | output_uleb128 (val1->v.val_unsigned); | |
5026 | fputc ('\n', asm_out_file); | |
5027 | break; | |
5028 | case DW_OP_fbreg: | |
5029 | output_sleb128 (val1->v.val_int); | |
5030 | fputc ('\n', asm_out_file); | |
5031 | break; | |
5032 | case DW_OP_bregx: | |
5033 | output_uleb128 (val1->v.val_unsigned); | |
5034 | fputc ('\n', asm_out_file); | |
5035 | output_sleb128 (val2->v.val_int); | |
5036 | fputc ('\n', asm_out_file); | |
5037 | break; | |
5038 | case DW_OP_piece: | |
5039 | output_uleb128 (val1->v.val_unsigned); | |
5040 | fputc ('\n', asm_out_file); | |
5041 | break; | |
5042 | case DW_OP_deref_size: | |
5043 | case DW_OP_xderef_size: | |
5044 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
5045 | fputc ('\n', asm_out_file); | |
a3f97cbb JW |
5046 | break; |
5047 | default: | |
5048 | break; | |
5049 | } | |
a3f97cbb JW |
5050 | } |
5051 | ||
3f76745e | 5052 | /* Compute the offset of a sibling. */ |
71dfc51f | 5053 | |
3f76745e JM |
5054 | static unsigned long |
5055 | sibling_offset (die) | |
5056 | dw_die_ref die; | |
a3f97cbb | 5057 | { |
3f76745e | 5058 | unsigned long offset; |
71dfc51f | 5059 | |
3f76745e JM |
5060 | if (die->die_child_last == NULL) |
5061 | offset = die->die_offset + size_of_die (die); | |
5062 | else | |
5063 | offset = sibling_offset (die->die_child_last) + 1; | |
71dfc51f | 5064 | |
3f76745e | 5065 | return offset; |
a3f97cbb JW |
5066 | } |
5067 | ||
3f76745e JM |
5068 | /* Output the DIE and its attributes. Called recursively to generate |
5069 | the definitions of each child DIE. */ | |
71dfc51f | 5070 | |
a3f97cbb | 5071 | static void |
3f76745e JM |
5072 | output_die (die) |
5073 | register dw_die_ref die; | |
a3f97cbb | 5074 | { |
3f76745e JM |
5075 | register dw_attr_ref a; |
5076 | register dw_die_ref c; | |
5077 | register unsigned long ref_offset; | |
5078 | register unsigned long size; | |
5079 | register dw_loc_descr_ref loc; | |
5080 | register int i; | |
a94dbf2c | 5081 | |
3f76745e | 5082 | output_uleb128 (die->die_abbrev); |
c5cec899 | 5083 | if (flag_debug_asm) |
3f76745e JM |
5084 | fprintf (asm_out_file, " (DIE (0x%x) %s)", |
5085 | die->die_offset, dwarf_tag_name (die->die_tag)); | |
a94dbf2c | 5086 | |
3f76745e | 5087 | fputc ('\n', asm_out_file); |
a94dbf2c | 5088 | |
3f76745e | 5089 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
a3f97cbb | 5090 | { |
3f76745e JM |
5091 | switch (a->dw_attr_val.val_class) |
5092 | { | |
5093 | case dw_val_class_addr: | |
5094 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, | |
5095 | a->dw_attr_val.v.val_addr); | |
5096 | break; | |
a3f97cbb | 5097 | |
3f76745e JM |
5098 | case dw_val_class_loc: |
5099 | size = size_of_locs (a->dw_attr_val.v.val_loc); | |
71dfc51f | 5100 | |
3f76745e JM |
5101 | /* Output the block length for this list of location operations. */ |
5102 | switch (constant_size (size)) | |
5103 | { | |
5104 | case 1: | |
5105 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, size); | |
5106 | break; | |
5107 | case 2: | |
5108 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, size); | |
5109 | break; | |
5110 | default: | |
5111 | abort (); | |
5112 | } | |
71dfc51f | 5113 | |
c5cec899 | 5114 | if (flag_debug_asm) |
3f76745e JM |
5115 | fprintf (asm_out_file, "\t%s %s", |
5116 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
71dfc51f | 5117 | |
3f76745e JM |
5118 | fputc ('\n', asm_out_file); |
5119 | for (loc = a->dw_attr_val.v.val_loc; loc != NULL; | |
5120 | loc = loc->dw_loc_next) | |
5121 | { | |
5122 | /* Output the opcode. */ | |
5123 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, loc->dw_loc_opc); | |
c5cec899 | 5124 | if (flag_debug_asm) |
3f76745e JM |
5125 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
5126 | dwarf_stack_op_name (loc->dw_loc_opc)); | |
71dfc51f | 5127 | |
3f76745e | 5128 | fputc ('\n', asm_out_file); |
71dfc51f | 5129 | |
3f76745e JM |
5130 | /* Output the operand(s) (if any). */ |
5131 | output_loc_operands (loc); | |
5132 | } | |
a3f97cbb | 5133 | break; |
3f76745e JM |
5134 | |
5135 | case dw_val_class_const: | |
5136 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, a->dw_attr_val.v.val_int); | |
a3f97cbb | 5137 | break; |
3f76745e JM |
5138 | |
5139 | case dw_val_class_unsigned_const: | |
5140 | switch (constant_size (a->dw_attr_val.v.val_unsigned)) | |
5141 | { | |
5142 | case 1: | |
5143 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5144 | a->dw_attr_val.v.val_unsigned); | |
5145 | break; | |
5146 | case 2: | |
5147 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, | |
5148 | a->dw_attr_val.v.val_unsigned); | |
5149 | break; | |
5150 | case 4: | |
5151 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, | |
5152 | a->dw_attr_val.v.val_unsigned); | |
5153 | break; | |
5154 | case 8: | |
5155 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
5156 | a->dw_attr_val.v.val_long_long.hi, | |
5157 | a->dw_attr_val.v.val_long_long.low); | |
5158 | break; | |
5159 | default: | |
5160 | abort (); | |
5161 | } | |
a3f97cbb | 5162 | break; |
3f76745e JM |
5163 | |
5164 | case dw_val_class_long_long: | |
5165 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 8); | |
c5cec899 | 5166 | if (flag_debug_asm) |
3f76745e JM |
5167 | fprintf (asm_out_file, "\t%s %s", |
5168 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5169 | ||
5170 | fputc ('\n', asm_out_file); | |
5171 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
5172 | a->dw_attr_val.v.val_long_long.hi, | |
5173 | a->dw_attr_val.v.val_long_long.low); | |
5174 | ||
c5cec899 | 5175 | if (flag_debug_asm) |
3f76745e JM |
5176 | fprintf (asm_out_file, |
5177 | "\t%s long long constant", ASM_COMMENT_START); | |
5178 | ||
5179 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5180 | break; |
3f76745e JM |
5181 | |
5182 | case dw_val_class_float: | |
5183 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5184 | a->dw_attr_val.v.val_float.length * 4); | |
c5cec899 | 5185 | if (flag_debug_asm) |
3f76745e JM |
5186 | fprintf (asm_out_file, "\t%s %s", |
5187 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5188 | ||
5189 | fputc ('\n', asm_out_file); | |
5190 | for (i = 0; i < a->dw_attr_val.v.val_float.length; ++i) | |
5191 | { | |
5192 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, | |
5193 | a->dw_attr_val.v.val_float.array[i]); | |
c5cec899 | 5194 | if (flag_debug_asm) |
3f76745e JM |
5195 | fprintf (asm_out_file, "\t%s fp constant word %d", |
5196 | ASM_COMMENT_START, i); | |
5197 | ||
5198 | fputc ('\n', asm_out_file); | |
5199 | } | |
a3f97cbb | 5200 | break; |
3f76745e JM |
5201 | |
5202 | case dw_val_class_flag: | |
5203 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, a->dw_attr_val.v.val_flag); | |
a3f97cbb | 5204 | break; |
3f76745e JM |
5205 | |
5206 | case dw_val_class_die_ref: | |
5207 | if (a->dw_attr_val.v.val_die_ref != NULL) | |
5208 | ref_offset = a->dw_attr_val.v.val_die_ref->die_offset; | |
5209 | else if (a->dw_attr == DW_AT_sibling) | |
5210 | ref_offset = sibling_offset(die); | |
5211 | else | |
5212 | abort (); | |
5213 | ||
5214 | ASM_OUTPUT_DWARF_DATA (asm_out_file, ref_offset); | |
a3f97cbb | 5215 | break; |
3f76745e JM |
5216 | |
5217 | case dw_val_class_fde_ref: | |
a6ab3aad JM |
5218 | { |
5219 | char l1[20]; | |
5220 | ASM_GENERATE_INTERNAL_LABEL | |
5221 | (l1, FDE_AFTER_SIZE_LABEL, a->dw_attr_val.v.val_fde_index * 2); | |
5222 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, l1); | |
5223 | fprintf (asm_out_file, " - %d", DWARF_OFFSET_SIZE); | |
5224 | } | |
a3f97cbb | 5225 | break; |
a3f97cbb | 5226 | |
3f76745e JM |
5227 | case dw_val_class_lbl_id: |
5228 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, a->dw_attr_val.v.val_lbl_id); | |
5229 | break; | |
71dfc51f | 5230 | |
3f76745e JM |
5231 | case dw_val_class_section_offset: |
5232 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, | |
5233 | stripattributes | |
5234 | (a->dw_attr_val.v.val_section)); | |
5235 | break; | |
a3f97cbb | 5236 | |
3f76745e | 5237 | case dw_val_class_str: |
8d4e65a6 JL |
5238 | if (flag_debug_asm) |
5239 | ASM_OUTPUT_DWARF_STRING (asm_out_file, a->dw_attr_val.v.val_str); | |
5240 | else | |
5241 | ASM_OUTPUT_ASCII (asm_out_file, | |
5242 | a->dw_attr_val.v.val_str, | |
c2c85462 | 5243 | strlen (a->dw_attr_val.v.val_str) + 1); |
3f76745e | 5244 | break; |
b2932ae5 | 5245 | |
3f76745e JM |
5246 | default: |
5247 | abort (); | |
5248 | } | |
a94dbf2c | 5249 | |
3f76745e JM |
5250 | if (a->dw_attr_val.val_class != dw_val_class_loc |
5251 | && a->dw_attr_val.val_class != dw_val_class_long_long | |
5252 | && a->dw_attr_val.val_class != dw_val_class_float) | |
5253 | { | |
c5cec899 | 5254 | if (flag_debug_asm) |
3f76745e JM |
5255 | fprintf (asm_out_file, "\t%s %s", |
5256 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
b2932ae5 | 5257 | |
3f76745e JM |
5258 | fputc ('\n', asm_out_file); |
5259 | } | |
5260 | } | |
71dfc51f | 5261 | |
3f76745e JM |
5262 | for (c = die->die_child; c != NULL; c = c->die_sib) |
5263 | output_die (c); | |
71dfc51f | 5264 | |
3f76745e | 5265 | if (die->die_child != NULL) |
7e23cb16 | 5266 | { |
3f76745e JM |
5267 | /* Add null byte to terminate sibling list. */ |
5268 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5269 | if (flag_debug_asm) |
3f76745e JM |
5270 | fprintf (asm_out_file, "\t%s end of children of DIE 0x%x", |
5271 | ASM_COMMENT_START, die->die_offset); | |
5272 | ||
7e23cb16 JM |
5273 | fputc ('\n', asm_out_file); |
5274 | } | |
3f76745e | 5275 | } |
71dfc51f | 5276 | |
3f76745e JM |
5277 | /* Output the compilation unit that appears at the beginning of the |
5278 | .debug_info section, and precedes the DIE descriptions. */ | |
71dfc51f | 5279 | |
3f76745e JM |
5280 | static void |
5281 | output_compilation_unit_header () | |
5282 | { | |
5283 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset - DWARF_OFFSET_SIZE); | |
c5cec899 | 5284 | if (flag_debug_asm) |
3f76745e JM |
5285 | fprintf (asm_out_file, "\t%s Length of Compilation Unit Info.", |
5286 | ASM_COMMENT_START); | |
71dfc51f | 5287 | |
a3f97cbb | 5288 | fputc ('\n', asm_out_file); |
3f76745e | 5289 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
c5cec899 | 5290 | if (flag_debug_asm) |
3f76745e | 5291 | fprintf (asm_out_file, "\t%s DWARF version number", ASM_COMMENT_START); |
71dfc51f | 5292 | |
a3f97cbb | 5293 | fputc ('\n', asm_out_file); |
3f76745e | 5294 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (ABBREV_SECTION)); |
c5cec899 | 5295 | if (flag_debug_asm) |
3f76745e JM |
5296 | fprintf (asm_out_file, "\t%s Offset Into Abbrev. Section", |
5297 | ASM_COMMENT_START); | |
71dfc51f | 5298 | |
a3f97cbb | 5299 | fputc ('\n', asm_out_file); |
3f76745e | 5300 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); |
c5cec899 | 5301 | if (flag_debug_asm) |
3f76745e | 5302 | fprintf (asm_out_file, "\t%s Pointer Size (in bytes)", ASM_COMMENT_START); |
71dfc51f | 5303 | |
a3f97cbb | 5304 | fputc ('\n', asm_out_file); |
a3f97cbb JW |
5305 | } |
5306 | ||
a1d7ffe3 JM |
5307 | /* The DWARF2 pubname for a nested thingy looks like "A::f". The output |
5308 | of decl_printable_name for C++ looks like "A::f(int)". Let's drop the | |
5309 | argument list, and maybe the scope. */ | |
5310 | ||
71dfc51f | 5311 | static char * |
a1d7ffe3 JM |
5312 | dwarf2_name (decl, scope) |
5313 | tree decl; | |
5314 | int scope; | |
5315 | { | |
5316 | return (*decl_printable_name) (decl, scope ? 1 : 0); | |
5317 | } | |
5318 | ||
d291dd49 | 5319 | /* Add a new entry to .debug_pubnames if appropriate. */ |
71dfc51f | 5320 | |
d291dd49 JM |
5321 | static void |
5322 | add_pubname (decl, die) | |
5323 | tree decl; | |
5324 | dw_die_ref die; | |
5325 | { | |
5326 | pubname_ref p; | |
5327 | ||
5328 | if (! TREE_PUBLIC (decl)) | |
5329 | return; | |
5330 | ||
5331 | if (pubname_table_in_use == pubname_table_allocated) | |
5332 | { | |
5333 | pubname_table_allocated += PUBNAME_TABLE_INCREMENT; | |
5334 | pubname_table = (pubname_ref) xrealloc | |
5335 | (pubname_table, pubname_table_allocated * sizeof (pubname_entry)); | |
5336 | } | |
71dfc51f | 5337 | |
d291dd49 JM |
5338 | p = &pubname_table[pubname_table_in_use++]; |
5339 | p->die = die; | |
a1d7ffe3 JM |
5340 | |
5341 | p->name = xstrdup (dwarf2_name (decl, 1)); | |
d291dd49 JM |
5342 | } |
5343 | ||
a3f97cbb JW |
5344 | /* Output the public names table used to speed up access to externally |
5345 | visible names. For now, only generate entries for externally | |
5346 | visible procedures. */ | |
71dfc51f | 5347 | |
a3f97cbb JW |
5348 | static void |
5349 | output_pubnames () | |
5350 | { | |
d291dd49 | 5351 | register unsigned i; |
71dfc51f RK |
5352 | register unsigned long pubnames_length = size_of_pubnames (); |
5353 | ||
5354 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pubnames_length); | |
5355 | ||
c5cec899 | 5356 | if (flag_debug_asm) |
71dfc51f RK |
5357 | fprintf (asm_out_file, "\t%s Length of Public Names Info.", |
5358 | ASM_COMMENT_START); | |
5359 | ||
a3f97cbb JW |
5360 | fputc ('\n', asm_out_file); |
5361 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
71dfc51f | 5362 | |
c5cec899 | 5363 | if (flag_debug_asm) |
71dfc51f RK |
5364 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5365 | ||
a3f97cbb | 5366 | fputc ('\n', asm_out_file); |
c53aa195 | 5367 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (DEBUG_INFO_SECTION)); |
c5cec899 | 5368 | if (flag_debug_asm) |
71dfc51f RK |
5369 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
5370 | ASM_COMMENT_START); | |
5371 | ||
a3f97cbb | 5372 | fputc ('\n', asm_out_file); |
7e23cb16 | 5373 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset); |
c5cec899 | 5374 | if (flag_debug_asm) |
71dfc51f RK |
5375 | fprintf (asm_out_file, "\t%s Compilation Unit Length", ASM_COMMENT_START); |
5376 | ||
a3f97cbb | 5377 | fputc ('\n', asm_out_file); |
d291dd49 | 5378 | for (i = 0; i < pubname_table_in_use; ++i) |
a3f97cbb | 5379 | { |
d291dd49 | 5380 | register pubname_ref pub = &pubname_table[i]; |
71dfc51f | 5381 | |
7e23cb16 | 5382 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pub->die->die_offset); |
c5cec899 | 5383 | if (flag_debug_asm) |
71dfc51f RK |
5384 | fprintf (asm_out_file, "\t%s DIE offset", ASM_COMMENT_START); |
5385 | ||
d291dd49 JM |
5386 | fputc ('\n', asm_out_file); |
5387 | ||
c5cec899 | 5388 | if (flag_debug_asm) |
8d4e65a6 JL |
5389 | { |
5390 | ASM_OUTPUT_DWARF_STRING (asm_out_file, pub->name); | |
5391 | fprintf (asm_out_file, "%s external name", ASM_COMMENT_START); | |
5392 | } | |
5393 | else | |
5394 | { | |
c2c85462 | 5395 | ASM_OUTPUT_ASCII (asm_out_file, pub->name, strlen (pub->name) + 1); |
8d4e65a6 | 5396 | } |
71dfc51f | 5397 | |
d291dd49 | 5398 | fputc ('\n', asm_out_file); |
a3f97cbb | 5399 | } |
71dfc51f | 5400 | |
7e23cb16 | 5401 | ASM_OUTPUT_DWARF_DATA (asm_out_file, 0); |
a3f97cbb JW |
5402 | fputc ('\n', asm_out_file); |
5403 | } | |
5404 | ||
d291dd49 | 5405 | /* Add a new entry to .debug_aranges if appropriate. */ |
71dfc51f | 5406 | |
d291dd49 JM |
5407 | static void |
5408 | add_arange (decl, die) | |
5409 | tree decl; | |
5410 | dw_die_ref die; | |
5411 | { | |
5412 | if (! DECL_SECTION_NAME (decl)) | |
5413 | return; | |
5414 | ||
5415 | if (arange_table_in_use == arange_table_allocated) | |
5416 | { | |
5417 | arange_table_allocated += ARANGE_TABLE_INCREMENT; | |
71dfc51f RK |
5418 | arange_table |
5419 | = (arange_ref) xrealloc (arange_table, | |
5420 | arange_table_allocated * sizeof (dw_die_ref)); | |
d291dd49 | 5421 | } |
71dfc51f | 5422 | |
d291dd49 JM |
5423 | arange_table[arange_table_in_use++] = die; |
5424 | } | |
5425 | ||
a3f97cbb JW |
5426 | /* Output the information that goes into the .debug_aranges table. |
5427 | Namely, define the beginning and ending address range of the | |
5428 | text section generated for this compilation unit. */ | |
71dfc51f | 5429 | |
a3f97cbb JW |
5430 | static void |
5431 | output_aranges () | |
5432 | { | |
d291dd49 | 5433 | register unsigned i; |
71dfc51f RK |
5434 | register unsigned long aranges_length = size_of_aranges (); |
5435 | ||
5436 | ASM_OUTPUT_DWARF_DATA (asm_out_file, aranges_length); | |
c5cec899 | 5437 | if (flag_debug_asm) |
71dfc51f RK |
5438 | fprintf (asm_out_file, "\t%s Length of Address Ranges Info.", |
5439 | ASM_COMMENT_START); | |
5440 | ||
a3f97cbb JW |
5441 | fputc ('\n', asm_out_file); |
5442 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
c5cec899 | 5443 | if (flag_debug_asm) |
71dfc51f RK |
5444 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5445 | ||
a3f97cbb | 5446 | fputc ('\n', asm_out_file); |
c53aa195 | 5447 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (DEBUG_INFO_SECTION)); |
c5cec899 | 5448 | if (flag_debug_asm) |
71dfc51f RK |
5449 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
5450 | ASM_COMMENT_START); | |
5451 | ||
a3f97cbb JW |
5452 | fputc ('\n', asm_out_file); |
5453 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); | |
c5cec899 | 5454 | if (flag_debug_asm) |
71dfc51f RK |
5455 | fprintf (asm_out_file, "\t%s Size of Address", ASM_COMMENT_START); |
5456 | ||
a3f97cbb JW |
5457 | fputc ('\n', asm_out_file); |
5458 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5459 | if (flag_debug_asm) |
71dfc51f RK |
5460 | fprintf (asm_out_file, "\t%s Size of Segment Descriptor", |
5461 | ASM_COMMENT_START); | |
5462 | ||
a3f97cbb JW |
5463 | fputc ('\n', asm_out_file); |
5464 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 4); | |
7e23cb16 JM |
5465 | if (PTR_SIZE == 8) |
5466 | fprintf (asm_out_file, ",0,0"); | |
71dfc51f | 5467 | |
c5cec899 | 5468 | if (flag_debug_asm) |
71dfc51f RK |
5469 | fprintf (asm_out_file, "\t%s Pad to %d byte boundary", |
5470 | ASM_COMMENT_START, 2 * PTR_SIZE); | |
5471 | ||
a3f97cbb | 5472 | fputc ('\n', asm_out_file); |
bdb669cb | 5473 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, TEXT_SECTION); |
c5cec899 | 5474 | if (flag_debug_asm) |
71dfc51f RK |
5475 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
5476 | ||
a3f97cbb | 5477 | fputc ('\n', asm_out_file); |
5c90448c | 5478 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, text_end_label, TEXT_SECTION); |
c5cec899 | 5479 | if (flag_debug_asm) |
71dfc51f RK |
5480 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
5481 | ||
a3f97cbb | 5482 | fputc ('\n', asm_out_file); |
d291dd49 JM |
5483 | for (i = 0; i < arange_table_in_use; ++i) |
5484 | { | |
5485 | dw_die_ref a = arange_table[i]; | |
71dfc51f | 5486 | |
d291dd49 JM |
5487 | if (a->die_tag == DW_TAG_subprogram) |
5488 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, get_AT_low_pc (a)); | |
5489 | else | |
a1d7ffe3 JM |
5490 | { |
5491 | char *name = get_AT_string (a, DW_AT_MIPS_linkage_name); | |
5492 | if (! name) | |
5493 | name = get_AT_string (a, DW_AT_name); | |
71dfc51f | 5494 | |
a1d7ffe3 JM |
5495 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, name); |
5496 | } | |
71dfc51f | 5497 | |
c5cec899 | 5498 | if (flag_debug_asm) |
71dfc51f RK |
5499 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
5500 | ||
d291dd49 JM |
5501 | fputc ('\n', asm_out_file); |
5502 | if (a->die_tag == DW_TAG_subprogram) | |
7e23cb16 JM |
5503 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, get_AT_hi_pc (a), |
5504 | get_AT_low_pc (a)); | |
d291dd49 | 5505 | else |
7e23cb16 JM |
5506 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, |
5507 | get_AT_unsigned (a, DW_AT_byte_size)); | |
71dfc51f | 5508 | |
c5cec899 | 5509 | if (flag_debug_asm) |
71dfc51f RK |
5510 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
5511 | ||
d291dd49 JM |
5512 | fputc ('\n', asm_out_file); |
5513 | } | |
71dfc51f | 5514 | |
a3f97cbb | 5515 | /* Output the terminator words. */ |
7e23cb16 | 5516 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb | 5517 | fputc ('\n', asm_out_file); |
7e23cb16 | 5518 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb JW |
5519 | fputc ('\n', asm_out_file); |
5520 | } | |
5521 | ||
5522 | /* Output the source line number correspondence information. This | |
f19a6894 JW |
5523 | information goes into the .debug_line section. |
5524 | ||
5525 | If the format of this data changes, then the function size_of_line_info | |
5526 | must also be adjusted the same way. */ | |
71dfc51f | 5527 | |
a3f97cbb JW |
5528 | static void |
5529 | output_line_info () | |
5530 | { | |
a3f97cbb JW |
5531 | char line_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
5532 | char prev_line_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
5533 | register unsigned opc; | |
5534 | register unsigned n_op_args; | |
a3f97cbb JW |
5535 | register unsigned long ft_index; |
5536 | register unsigned long lt_index; | |
5537 | register unsigned long current_line; | |
5538 | register long line_offset; | |
5539 | register long line_delta; | |
5540 | register unsigned long current_file; | |
e90b62db | 5541 | register unsigned long function; |
71dfc51f | 5542 | |
7e23cb16 | 5543 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_info ()); |
c5cec899 | 5544 | if (flag_debug_asm) |
71dfc51f RK |
5545 | fprintf (asm_out_file, "\t%s Length of Source Line Info.", |
5546 | ASM_COMMENT_START); | |
5547 | ||
a3f97cbb JW |
5548 | fputc ('\n', asm_out_file); |
5549 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
c5cec899 | 5550 | if (flag_debug_asm) |
71dfc51f RK |
5551 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5552 | ||
a3f97cbb | 5553 | fputc ('\n', asm_out_file); |
7e23cb16 | 5554 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_prolog ()); |
c5cec899 | 5555 | if (flag_debug_asm) |
71dfc51f RK |
5556 | fprintf (asm_out_file, "\t%s Prolog Length", ASM_COMMENT_START); |
5557 | ||
a3f97cbb JW |
5558 | fputc ('\n', asm_out_file); |
5559 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_MIN_INSTR_LENGTH); | |
c5cec899 | 5560 | if (flag_debug_asm) |
71dfc51f RK |
5561 | fprintf (asm_out_file, "\t%s Minimum Instruction Length", |
5562 | ASM_COMMENT_START); | |
5563 | ||
a3f97cbb JW |
5564 | fputc ('\n', asm_out_file); |
5565 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_DEFAULT_IS_STMT_START); | |
c5cec899 | 5566 | if (flag_debug_asm) |
71dfc51f RK |
5567 | fprintf (asm_out_file, "\t%s Default is_stmt_start flag", |
5568 | ASM_COMMENT_START); | |
5569 | ||
a3f97cbb JW |
5570 | fputc ('\n', asm_out_file); |
5571 | fprintf (asm_out_file, "\t%s\t%d", ASM_BYTE_OP, DWARF_LINE_BASE); | |
c5cec899 | 5572 | if (flag_debug_asm) |
71dfc51f RK |
5573 | fprintf (asm_out_file, "\t%s Line Base Value (Special Opcodes)", |
5574 | ASM_COMMENT_START); | |
5575 | ||
a3f97cbb JW |
5576 | fputc ('\n', asm_out_file); |
5577 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_RANGE); | |
c5cec899 | 5578 | if (flag_debug_asm) |
71dfc51f RK |
5579 | fprintf (asm_out_file, "\t%s Line Range Value (Special Opcodes)", |
5580 | ASM_COMMENT_START); | |
5581 | ||
a3f97cbb JW |
5582 | fputc ('\n', asm_out_file); |
5583 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_OPCODE_BASE); | |
c5cec899 | 5584 | if (flag_debug_asm) |
71dfc51f RK |
5585 | fprintf (asm_out_file, "\t%s Special Opcode Base", ASM_COMMENT_START); |
5586 | ||
a3f97cbb JW |
5587 | fputc ('\n', asm_out_file); |
5588 | for (opc = 1; opc < DWARF_LINE_OPCODE_BASE; ++opc) | |
5589 | { | |
5590 | switch (opc) | |
5591 | { | |
5592 | case DW_LNS_advance_pc: | |
5593 | case DW_LNS_advance_line: | |
5594 | case DW_LNS_set_file: | |
5595 | case DW_LNS_set_column: | |
5596 | case DW_LNS_fixed_advance_pc: | |
5597 | n_op_args = 1; | |
5598 | break; | |
5599 | default: | |
5600 | n_op_args = 0; | |
5601 | break; | |
5602 | } | |
5603 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, n_op_args); | |
c5cec899 | 5604 | if (flag_debug_asm) |
71dfc51f RK |
5605 | fprintf (asm_out_file, "\t%s opcode: 0x%x has %d args", |
5606 | ASM_COMMENT_START, opc, n_op_args); | |
a3f97cbb JW |
5607 | fputc ('\n', asm_out_file); |
5608 | } | |
71dfc51f | 5609 | |
c5cec899 | 5610 | if (flag_debug_asm) |
71dfc51f RK |
5611 | fprintf (asm_out_file, "%s Include Directory Table\n", ASM_COMMENT_START); |
5612 | ||
a3f97cbb JW |
5613 | /* Include directory table is empty, at present */ |
5614 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
5615 | fputc ('\n', asm_out_file); | |
c5cec899 | 5616 | if (flag_debug_asm) |
71dfc51f RK |
5617 | fprintf (asm_out_file, "%s File Name Table\n", ASM_COMMENT_START); |
5618 | ||
a3f97cbb JW |
5619 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
5620 | { | |
c5cec899 | 5621 | if (flag_debug_asm) |
8d4e65a6 JL |
5622 | { |
5623 | ASM_OUTPUT_DWARF_STRING (asm_out_file, file_table[ft_index]); | |
5624 | fprintf (asm_out_file, "%s File Entry: 0x%x", | |
5625 | ASM_COMMENT_START, ft_index); | |
5626 | } | |
5627 | else | |
5628 | { | |
5629 | ASM_OUTPUT_ASCII (asm_out_file, | |
5630 | file_table[ft_index], | |
c2c85462 | 5631 | strlen (file_table[ft_index]) + 1); |
8d4e65a6 | 5632 | } |
71dfc51f | 5633 | |
a3f97cbb | 5634 | fputc ('\n', asm_out_file); |
71dfc51f | 5635 | |
a3f97cbb JW |
5636 | /* Include directory index */ |
5637 | output_uleb128 (0); | |
5638 | fputc ('\n', asm_out_file); | |
71dfc51f | 5639 | |
a3f97cbb JW |
5640 | /* Modification time */ |
5641 | output_uleb128 (0); | |
5642 | fputc ('\n', asm_out_file); | |
71dfc51f | 5643 | |
a3f97cbb JW |
5644 | /* File length in bytes */ |
5645 | output_uleb128 (0); | |
5646 | fputc ('\n', asm_out_file); | |
5647 | } | |
71dfc51f | 5648 | |
a3f97cbb JW |
5649 | /* Terminate the file name table */ |
5650 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
5651 | fputc ('\n', asm_out_file); | |
5652 | ||
5653 | /* Set the address register to the first location in the text section */ | |
5654 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5655 | if (flag_debug_asm) |
71dfc51f RK |
5656 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); |
5657 | ||
a3f97cbb JW |
5658 | fputc ('\n', asm_out_file); |
5659 | output_uleb128 (1 + PTR_SIZE); | |
5660 | fputc ('\n', asm_out_file); | |
5661 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5662 | fputc ('\n', asm_out_file); | |
bdb669cb | 5663 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, TEXT_SECTION); |
a3f97cbb JW |
5664 | fputc ('\n', asm_out_file); |
5665 | ||
5666 | /* Generate the line number to PC correspondence table, encoded as | |
5667 | a series of state machine operations. */ | |
5668 | current_file = 1; | |
5669 | current_line = 1; | |
bdb669cb | 5670 | strcpy (prev_line_label, TEXT_SECTION); |
a3f97cbb JW |
5671 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) |
5672 | { | |
e90b62db | 5673 | register dw_line_info_ref line_info; |
71dfc51f | 5674 | |
f19a6894 JW |
5675 | /* Emit debug info for the address of the current line, choosing |
5676 | the encoding that uses the least amount of space. */ | |
5677 | /* ??? Unfortunately, we have little choice here currently, and must | |
5678 | always use the most general form. Gcc does not know the address | |
5679 | delta itself, so we can't use DW_LNS_advance_pc. There are no known | |
5680 | dwarf2 aware assemblers at this time, so we can't use any special | |
5681 | pseudo ops that would allow the assembler to optimally encode this for | |
5682 | us. Many ports do have length attributes which will give an upper | |
5683 | bound on the address range. We could perhaps use length attributes | |
5684 | to determine when it is safe to use DW_LNS_fixed_advance_pc. */ | |
5c90448c | 5685 | ASM_GENERATE_INTERNAL_LABEL (line_label, LINE_CODE_LABEL, lt_index); |
f19a6894 JW |
5686 | if (0) |
5687 | { | |
5688 | /* This can handle deltas up to 0xffff. This takes 3 bytes. */ | |
5689 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5690 | if (flag_debug_asm) |
f19a6894 JW |
5691 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5692 | ASM_COMMENT_START); | |
5693 | ||
5694 | fputc ('\n', asm_out_file); | |
5695 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, prev_line_label); | |
5696 | fputc ('\n', asm_out_file); | |
5697 | } | |
5698 | else | |
5699 | { | |
5700 | /* This can handle any delta. This takes 4+PTR_SIZE bytes. */ | |
5701 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5702 | if (flag_debug_asm) |
f19a6894 JW |
5703 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5704 | ASM_COMMENT_START); | |
5705 | fputc ('\n', asm_out_file); | |
5706 | output_uleb128 (1 + PTR_SIZE); | |
5707 | fputc ('\n', asm_out_file); | |
5708 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5709 | fputc ('\n', asm_out_file); | |
5710 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5711 | fputc ('\n', asm_out_file); | |
5712 | } | |
5713 | strcpy (prev_line_label, line_label); | |
5714 | ||
5715 | /* Emit debug info for the source file of the current line, if | |
5716 | different from the previous line. */ | |
a3f97cbb JW |
5717 | line_info = &line_info_table[lt_index]; |
5718 | if (line_info->dw_file_num != current_file) | |
5719 | { | |
5720 | current_file = line_info->dw_file_num; | |
5721 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 5722 | if (flag_debug_asm) |
71dfc51f RK |
5723 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
5724 | ||
a3f97cbb JW |
5725 | fputc ('\n', asm_out_file); |
5726 | output_uleb128 (current_file); | |
c5cec899 | 5727 | if (flag_debug_asm) |
b2932ae5 | 5728 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 5729 | |
a3f97cbb JW |
5730 | fputc ('\n', asm_out_file); |
5731 | } | |
71dfc51f | 5732 | |
f19a6894 JW |
5733 | /* Emit debug info for the current line number, choosing the encoding |
5734 | that uses the least amount of space. */ | |
a94dbf2c JM |
5735 | line_offset = line_info->dw_line_num - current_line; |
5736 | line_delta = line_offset - DWARF_LINE_BASE; | |
5737 | current_line = line_info->dw_line_num; | |
5738 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
a3f97cbb | 5739 | { |
f19a6894 JW |
5740 | /* This can handle deltas from -10 to 234, using the current |
5741 | definitions of DWARF_LINE_BASE and DWARF_LINE_RANGE. This | |
5742 | takes 1 byte. */ | |
a94dbf2c JM |
5743 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, |
5744 | DWARF_LINE_OPCODE_BASE + line_delta); | |
c5cec899 | 5745 | if (flag_debug_asm) |
a94dbf2c JM |
5746 | fprintf (asm_out_file, |
5747 | "\t%s line %d", ASM_COMMENT_START, current_line); | |
71dfc51f | 5748 | |
a94dbf2c JM |
5749 | fputc ('\n', asm_out_file); |
5750 | } | |
5751 | else | |
5752 | { | |
f19a6894 JW |
5753 | /* This can handle any delta. This takes at least 4 bytes, depending |
5754 | on the value being encoded. */ | |
a94dbf2c | 5755 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); |
c5cec899 | 5756 | if (flag_debug_asm) |
71dfc51f RK |
5757 | fprintf (asm_out_file, "\t%s advance to line %d", |
5758 | ASM_COMMENT_START, current_line); | |
5759 | ||
a94dbf2c JM |
5760 | fputc ('\n', asm_out_file); |
5761 | output_sleb128 (line_offset); | |
5762 | fputc ('\n', asm_out_file); | |
5763 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
5764 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5765 | } |
a3f97cbb JW |
5766 | } |
5767 | ||
f19a6894 JW |
5768 | /* Emit debug info for the address of the end of the function. */ |
5769 | if (0) | |
5770 | { | |
5771 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5772 | if (flag_debug_asm) |
f19a6894 JW |
5773 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5774 | ASM_COMMENT_START); | |
71dfc51f | 5775 | |
f19a6894 JW |
5776 | fputc ('\n', asm_out_file); |
5777 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, text_end_label, prev_line_label); | |
5778 | fputc ('\n', asm_out_file); | |
5779 | } | |
5780 | else | |
5781 | { | |
5782 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5783 | if (flag_debug_asm) |
f19a6894 JW |
5784 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); |
5785 | fputc ('\n', asm_out_file); | |
5786 | output_uleb128 (1 + PTR_SIZE); | |
5787 | fputc ('\n', asm_out_file); | |
5788 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5789 | fputc ('\n', asm_out_file); | |
5790 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_end_label); | |
5791 | fputc ('\n', asm_out_file); | |
5792 | } | |
bdb669cb | 5793 | |
a3f97cbb JW |
5794 | /* Output the marker for the end of the line number info. */ |
5795 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5796 | if (flag_debug_asm) |
71dfc51f RK |
5797 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", ASM_COMMENT_START); |
5798 | ||
a3f97cbb JW |
5799 | fputc ('\n', asm_out_file); |
5800 | output_uleb128 (1); | |
5801 | fputc ('\n', asm_out_file); | |
5802 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
5803 | fputc ('\n', asm_out_file); | |
e90b62db JM |
5804 | |
5805 | function = 0; | |
5806 | current_file = 1; | |
5807 | current_line = 1; | |
5808 | for (lt_index = 0; lt_index < separate_line_info_table_in_use; ) | |
5809 | { | |
5810 | register dw_separate_line_info_ref line_info | |
5811 | = &separate_line_info_table[lt_index]; | |
71dfc51f | 5812 | |
f19a6894 JW |
5813 | /* Emit debug info for the address of the current line. If this is |
5814 | a new function, or the first line of a function, then we need | |
5815 | to handle it differently. */ | |
5c90448c JM |
5816 | ASM_GENERATE_INTERNAL_LABEL (line_label, SEPARATE_LINE_CODE_LABEL, |
5817 | lt_index); | |
e90b62db JM |
5818 | if (function != line_info->function) |
5819 | { | |
5820 | function = line_info->function; | |
71dfc51f | 5821 | |
e90b62db JM |
5822 | /* Set the address register to the first line in the function */ |
5823 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5824 | if (flag_debug_asm) |
e90b62db JM |
5825 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5826 | ASM_COMMENT_START); | |
71dfc51f | 5827 | |
e90b62db JM |
5828 | fputc ('\n', asm_out_file); |
5829 | output_uleb128 (1 + PTR_SIZE); | |
5830 | fputc ('\n', asm_out_file); | |
5831 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5832 | fputc ('\n', asm_out_file); | |
5833 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5834 | fputc ('\n', asm_out_file); | |
5835 | } | |
5836 | else | |
5837 | { | |
f19a6894 JW |
5838 | /* ??? See the DW_LNS_advance_pc comment above. */ |
5839 | if (0) | |
5840 | { | |
5841 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5842 | if (flag_debug_asm) |
f19a6894 JW |
5843 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5844 | ASM_COMMENT_START); | |
71dfc51f | 5845 | |
f19a6894 JW |
5846 | fputc ('\n', asm_out_file); |
5847 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
5848 | prev_line_label); | |
5849 | fputc ('\n', asm_out_file); | |
5850 | } | |
5851 | else | |
5852 | { | |
5853 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5854 | if (flag_debug_asm) |
f19a6894 JW |
5855 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5856 | ASM_COMMENT_START); | |
5857 | fputc ('\n', asm_out_file); | |
5858 | output_uleb128 (1 + PTR_SIZE); | |
5859 | fputc ('\n', asm_out_file); | |
5860 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5861 | fputc ('\n', asm_out_file); | |
5862 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5863 | fputc ('\n', asm_out_file); | |
5864 | } | |
e90b62db | 5865 | } |
f19a6894 | 5866 | strcpy (prev_line_label, line_label); |
71dfc51f | 5867 | |
f19a6894 JW |
5868 | /* Emit debug info for the source file of the current line, if |
5869 | different from the previous line. */ | |
e90b62db JM |
5870 | if (line_info->dw_file_num != current_file) |
5871 | { | |
5872 | current_file = line_info->dw_file_num; | |
5873 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 5874 | if (flag_debug_asm) |
71dfc51f RK |
5875 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
5876 | ||
e90b62db JM |
5877 | fputc ('\n', asm_out_file); |
5878 | output_uleb128 (current_file); | |
c5cec899 | 5879 | if (flag_debug_asm) |
b2932ae5 | 5880 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 5881 | |
e90b62db JM |
5882 | fputc ('\n', asm_out_file); |
5883 | } | |
71dfc51f | 5884 | |
f19a6894 JW |
5885 | /* Emit debug info for the current line number, choosing the encoding |
5886 | that uses the least amount of space. */ | |
e90b62db JM |
5887 | if (line_info->dw_line_num != current_line) |
5888 | { | |
5889 | line_offset = line_info->dw_line_num - current_line; | |
5890 | line_delta = line_offset - DWARF_LINE_BASE; | |
5891 | current_line = line_info->dw_line_num; | |
5892 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
5893 | { | |
5894 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5895 | DWARF_LINE_OPCODE_BASE + line_delta); | |
c5cec899 | 5896 | if (flag_debug_asm) |
71dfc51f RK |
5897 | fprintf (asm_out_file, |
5898 | "\t%s line %d", ASM_COMMENT_START, current_line); | |
5899 | ||
e90b62db JM |
5900 | fputc ('\n', asm_out_file); |
5901 | } | |
5902 | else | |
5903 | { | |
5904 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
c5cec899 | 5905 | if (flag_debug_asm) |
71dfc51f RK |
5906 | fprintf (asm_out_file, "\t%s advance to line %d", |
5907 | ASM_COMMENT_START, current_line); | |
5908 | ||
e90b62db JM |
5909 | fputc ('\n', asm_out_file); |
5910 | output_sleb128 (line_offset); | |
5911 | fputc ('\n', asm_out_file); | |
5912 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
5913 | fputc ('\n', asm_out_file); | |
5914 | } | |
5915 | } | |
71dfc51f | 5916 | |
e90b62db | 5917 | ++lt_index; |
e90b62db JM |
5918 | |
5919 | /* If we're done with a function, end its sequence. */ | |
5920 | if (lt_index == separate_line_info_table_in_use | |
5921 | || separate_line_info_table[lt_index].function != function) | |
5922 | { | |
5923 | current_file = 1; | |
5924 | current_line = 1; | |
71dfc51f | 5925 | |
f19a6894 | 5926 | /* Emit debug info for the address of the end of the function. */ |
5c90448c | 5927 | ASM_GENERATE_INTERNAL_LABEL (line_label, FUNC_END_LABEL, function); |
f19a6894 JW |
5928 | if (0) |
5929 | { | |
5930 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5931 | if (flag_debug_asm) |
f19a6894 JW |
5932 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5933 | ASM_COMMENT_START); | |
5934 | ||
5935 | fputc ('\n', asm_out_file); | |
5936 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
5937 | prev_line_label); | |
5938 | fputc ('\n', asm_out_file); | |
5939 | } | |
5940 | else | |
5941 | { | |
5942 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5943 | if (flag_debug_asm) |
f19a6894 JW |
5944 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5945 | ASM_COMMENT_START); | |
5946 | fputc ('\n', asm_out_file); | |
5947 | output_uleb128 (1 + PTR_SIZE); | |
5948 | fputc ('\n', asm_out_file); | |
5949 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5950 | fputc ('\n', asm_out_file); | |
5951 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5952 | fputc ('\n', asm_out_file); | |
5953 | } | |
e90b62db JM |
5954 | |
5955 | /* Output the marker for the end of this sequence. */ | |
5956 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5957 | if (flag_debug_asm) |
e90b62db JM |
5958 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", |
5959 | ASM_COMMENT_START); | |
71dfc51f | 5960 | |
e90b62db JM |
5961 | fputc ('\n', asm_out_file); |
5962 | output_uleb128 (1); | |
5963 | fputc ('\n', asm_out_file); | |
5964 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
5965 | fputc ('\n', asm_out_file); | |
5966 | } | |
5967 | } | |
a3f97cbb JW |
5968 | } |
5969 | \f | |
71dfc51f RK |
5970 | /* Given a pointer to a BLOCK node return non-zero if (and only if) the node |
5971 | in question represents the outermost pair of curly braces (i.e. the "body | |
5972 | block") of a function or method. | |
5973 | ||
5974 | For any BLOCK node representing a "body block" of a function or method, the | |
5975 | BLOCK_SUPERCONTEXT of the node will point to another BLOCK node which | |
5976 | represents the outermost (function) scope for the function or method (i.e. | |
5977 | the one which includes the formal parameters). The BLOCK_SUPERCONTEXT of | |
5978 | *that* node in turn will point to the relevant FUNCTION_DECL node. */ | |
5979 | ||
5980 | static inline int | |
a3f97cbb JW |
5981 | is_body_block (stmt) |
5982 | register tree stmt; | |
5983 | { | |
5984 | if (TREE_CODE (stmt) == BLOCK) | |
5985 | { | |
5986 | register tree parent = BLOCK_SUPERCONTEXT (stmt); | |
5987 | ||
5988 | if (TREE_CODE (parent) == BLOCK) | |
5989 | { | |
5990 | register tree grandparent = BLOCK_SUPERCONTEXT (parent); | |
5991 | ||
5992 | if (TREE_CODE (grandparent) == FUNCTION_DECL) | |
5993 | return 1; | |
5994 | } | |
5995 | } | |
71dfc51f | 5996 | |
a3f97cbb JW |
5997 | return 0; |
5998 | } | |
5999 | ||
a3f97cbb JW |
6000 | /* Given a pointer to a tree node for some base type, return a pointer to |
6001 | a DIE that describes the given type. | |
6002 | ||
6003 | This routine must only be called for GCC type nodes that correspond to | |
6004 | Dwarf base (fundamental) types. */ | |
71dfc51f | 6005 | |
a3f97cbb JW |
6006 | static dw_die_ref |
6007 | base_type_die (type) | |
6008 | register tree type; | |
6009 | { | |
a9d38797 JM |
6010 | register dw_die_ref base_type_result; |
6011 | register char *type_name; | |
6012 | register enum dwarf_type encoding; | |
71dfc51f | 6013 | register tree name = TYPE_NAME (type); |
a3f97cbb | 6014 | |
a9d38797 JM |
6015 | if (TREE_CODE (type) == ERROR_MARK |
6016 | || TREE_CODE (type) == VOID_TYPE) | |
a3f97cbb JW |
6017 | return 0; |
6018 | ||
71dfc51f RK |
6019 | if (TREE_CODE (name) == TYPE_DECL) |
6020 | name = DECL_NAME (name); | |
6021 | type_name = IDENTIFIER_POINTER (name); | |
a9d38797 | 6022 | |
a3f97cbb JW |
6023 | switch (TREE_CODE (type)) |
6024 | { | |
a3f97cbb | 6025 | case INTEGER_TYPE: |
a9d38797 | 6026 | /* Carefully distinguish the C character types, without messing |
a3f97cbb JW |
6027 | up if the language is not C. Note that we check only for the names |
6028 | that contain spaces; other names might occur by coincidence in other | |
6029 | languages. */ | |
a9d38797 JM |
6030 | if (! (TYPE_PRECISION (type) == CHAR_TYPE_SIZE |
6031 | && (type == char_type_node | |
6032 | || ! strcmp (type_name, "signed char") | |
6033 | || ! strcmp (type_name, "unsigned char")))) | |
a3f97cbb | 6034 | { |
a9d38797 JM |
6035 | if (TREE_UNSIGNED (type)) |
6036 | encoding = DW_ATE_unsigned; | |
6037 | else | |
6038 | encoding = DW_ATE_signed; | |
6039 | break; | |
a3f97cbb | 6040 | } |
a9d38797 | 6041 | /* else fall through */ |
a3f97cbb | 6042 | |
a9d38797 JM |
6043 | case CHAR_TYPE: |
6044 | /* GNU Pascal/Ada CHAR type. Not used in C. */ | |
6045 | if (TREE_UNSIGNED (type)) | |
6046 | encoding = DW_ATE_unsigned_char; | |
6047 | else | |
6048 | encoding = DW_ATE_signed_char; | |
a3f97cbb JW |
6049 | break; |
6050 | ||
6051 | case REAL_TYPE: | |
a9d38797 | 6052 | encoding = DW_ATE_float; |
a3f97cbb JW |
6053 | break; |
6054 | ||
6055 | case COMPLEX_TYPE: | |
a9d38797 | 6056 | encoding = DW_ATE_complex_float; |
a3f97cbb JW |
6057 | break; |
6058 | ||
6059 | case BOOLEAN_TYPE: | |
a9d38797 JM |
6060 | /* GNU FORTRAN/Ada/C++ BOOLEAN type. */ |
6061 | encoding = DW_ATE_boolean; | |
a3f97cbb JW |
6062 | break; |
6063 | ||
6064 | default: | |
a9d38797 | 6065 | abort (); /* No other TREE_CODEs are Dwarf fundamental types. */ |
a3f97cbb JW |
6066 | } |
6067 | ||
a9d38797 JM |
6068 | base_type_result = new_die (DW_TAG_base_type, comp_unit_die); |
6069 | add_AT_string (base_type_result, DW_AT_name, type_name); | |
6070 | add_AT_unsigned (base_type_result, DW_AT_byte_size, | |
6071 | TYPE_PRECISION (type) / BITS_PER_UNIT); | |
6072 | add_AT_unsigned (base_type_result, DW_AT_encoding, encoding); | |
a3f97cbb JW |
6073 | |
6074 | return base_type_result; | |
6075 | } | |
6076 | ||
6077 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a pointer to | |
6078 | the Dwarf "root" type for the given input type. The Dwarf "root" type of | |
6079 | a given type is generally the same as the given type, except that if the | |
6080 | given type is a pointer or reference type, then the root type of the given | |
6081 | type is the root type of the "basis" type for the pointer or reference | |
6082 | type. (This definition of the "root" type is recursive.) Also, the root | |
6083 | type of a `const' qualified type or a `volatile' qualified type is the | |
6084 | root type of the given type without the qualifiers. */ | |
71dfc51f | 6085 | |
a3f97cbb JW |
6086 | static tree |
6087 | root_type (type) | |
6088 | register tree type; | |
6089 | { | |
6090 | if (TREE_CODE (type) == ERROR_MARK) | |
6091 | return error_mark_node; | |
6092 | ||
6093 | switch (TREE_CODE (type)) | |
6094 | { | |
6095 | case ERROR_MARK: | |
6096 | return error_mark_node; | |
6097 | ||
6098 | case POINTER_TYPE: | |
6099 | case REFERENCE_TYPE: | |
6100 | return type_main_variant (root_type (TREE_TYPE (type))); | |
6101 | ||
6102 | default: | |
6103 | return type_main_variant (type); | |
6104 | } | |
6105 | } | |
6106 | ||
6107 | /* Given a pointer to an arbitrary ..._TYPE tree node, return non-zero if the | |
6108 | given input type is a Dwarf "fundamental" type. Otherwise return null. */ | |
71dfc51f RK |
6109 | |
6110 | static inline int | |
a3f97cbb JW |
6111 | is_base_type (type) |
6112 | register tree type; | |
6113 | { | |
6114 | switch (TREE_CODE (type)) | |
6115 | { | |
6116 | case ERROR_MARK: | |
6117 | case VOID_TYPE: | |
6118 | case INTEGER_TYPE: | |
6119 | case REAL_TYPE: | |
6120 | case COMPLEX_TYPE: | |
6121 | case BOOLEAN_TYPE: | |
6122 | case CHAR_TYPE: | |
6123 | return 1; | |
6124 | ||
6125 | case SET_TYPE: | |
6126 | case ARRAY_TYPE: | |
6127 | case RECORD_TYPE: | |
6128 | case UNION_TYPE: | |
6129 | case QUAL_UNION_TYPE: | |
6130 | case ENUMERAL_TYPE: | |
6131 | case FUNCTION_TYPE: | |
6132 | case METHOD_TYPE: | |
6133 | case POINTER_TYPE: | |
6134 | case REFERENCE_TYPE: | |
6135 | case FILE_TYPE: | |
6136 | case OFFSET_TYPE: | |
6137 | case LANG_TYPE: | |
6138 | return 0; | |
6139 | ||
6140 | default: | |
6141 | abort (); | |
6142 | } | |
71dfc51f | 6143 | |
a3f97cbb JW |
6144 | return 0; |
6145 | } | |
6146 | ||
6147 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a debugging | |
6148 | entry that chains various modifiers in front of the given type. */ | |
71dfc51f | 6149 | |
a3f97cbb JW |
6150 | static dw_die_ref |
6151 | modified_type_die (type, is_const_type, is_volatile_type, context_die) | |
6152 | register tree type; | |
6153 | register int is_const_type; | |
6154 | register int is_volatile_type; | |
6155 | register dw_die_ref context_die; | |
6156 | { | |
6157 | register enum tree_code code = TREE_CODE (type); | |
6158 | register dw_die_ref mod_type_die = NULL; | |
6159 | register dw_die_ref sub_die = NULL; | |
dfcf9891 | 6160 | register tree item_type = NULL; |
a3f97cbb JW |
6161 | |
6162 | if (code != ERROR_MARK) | |
6163 | { | |
a94dbf2c | 6164 | type = build_type_variant (type, is_const_type, is_volatile_type); |
bdb669cb JM |
6165 | |
6166 | mod_type_die = lookup_type_die (type); | |
6167 | if (mod_type_die) | |
6168 | return mod_type_die; | |
6169 | ||
a94dbf2c JM |
6170 | /* Handle C typedef types. */ |
6171 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
6172 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
6173 | { | |
6174 | tree dtype = TREE_TYPE (TYPE_NAME (type)); | |
6175 | if (type == dtype) | |
6176 | { | |
6177 | /* For a named type, use the typedef. */ | |
6178 | gen_type_die (type, context_die); | |
6179 | mod_type_die = lookup_type_die (type); | |
6180 | } | |
71dfc51f | 6181 | |
a94dbf2c JM |
6182 | else if (is_const_type < TYPE_READONLY (dtype) |
6183 | || is_volatile_type < TYPE_VOLATILE (dtype)) | |
6184 | /* cv-unqualified version of named type. Just use the unnamed | |
6185 | type to which it refers. */ | |
71dfc51f RK |
6186 | mod_type_die |
6187 | = modified_type_die (DECL_ORIGINAL_TYPE (TYPE_NAME (type)), | |
6188 | is_const_type, is_volatile_type, | |
6189 | context_die); | |
6190 | /* Else cv-qualified version of named type; fall through. */ | |
a94dbf2c JM |
6191 | } |
6192 | ||
6193 | if (mod_type_die) | |
6194 | /* OK */; | |
6195 | else if (is_const_type) | |
a3f97cbb | 6196 | { |
ab72d377 | 6197 | mod_type_die = new_die (DW_TAG_const_type, comp_unit_die); |
a9d38797 | 6198 | sub_die = modified_type_die (type, 0, is_volatile_type, context_die); |
a3f97cbb JW |
6199 | } |
6200 | else if (is_volatile_type) | |
6201 | { | |
ab72d377 | 6202 | mod_type_die = new_die (DW_TAG_volatile_type, comp_unit_die); |
a9d38797 | 6203 | sub_die = modified_type_die (type, 0, 0, context_die); |
a3f97cbb JW |
6204 | } |
6205 | else if (code == POINTER_TYPE) | |
6206 | { | |
ab72d377 | 6207 | mod_type_die = new_die (DW_TAG_pointer_type, comp_unit_die); |
a3f97cbb | 6208 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 6209 | #if 0 |
a3f97cbb | 6210 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 6211 | #endif |
a3f97cbb | 6212 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
6213 | } |
6214 | else if (code == REFERENCE_TYPE) | |
6215 | { | |
ab72d377 | 6216 | mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die); |
a3f97cbb | 6217 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 6218 | #if 0 |
a3f97cbb | 6219 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 6220 | #endif |
a3f97cbb | 6221 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
6222 | } |
6223 | else if (is_base_type (type)) | |
71dfc51f | 6224 | mod_type_die = base_type_die (type); |
a3f97cbb JW |
6225 | else |
6226 | { | |
4b674448 JM |
6227 | gen_type_die (type, context_die); |
6228 | ||
a3f97cbb JW |
6229 | /* We have to get the type_main_variant here (and pass that to the |
6230 | `lookup_type_die' routine) because the ..._TYPE node we have | |
6231 | might simply be a *copy* of some original type node (where the | |
6232 | copy was created to help us keep track of typedef names) and | |
6233 | that copy might have a different TYPE_UID from the original | |
a94dbf2c | 6234 | ..._TYPE node. */ |
a3f97cbb | 6235 | mod_type_die = lookup_type_die (type_main_variant (type)); |
3a88cbd1 JL |
6236 | if (mod_type_die == NULL) |
6237 | abort (); | |
a3f97cbb JW |
6238 | } |
6239 | } | |
71dfc51f | 6240 | |
dfcf9891 JW |
6241 | equate_type_number_to_die (type, mod_type_die); |
6242 | if (item_type) | |
71dfc51f RK |
6243 | /* We must do this after the equate_type_number_to_die call, in case |
6244 | this is a recursive type. This ensures that the modified_type_die | |
6245 | recursion will terminate even if the type is recursive. Recursive | |
6246 | types are possible in Ada. */ | |
6247 | sub_die = modified_type_die (item_type, | |
6248 | TYPE_READONLY (item_type), | |
6249 | TYPE_VOLATILE (item_type), | |
6250 | context_die); | |
6251 | ||
a3f97cbb | 6252 | if (sub_die != NULL) |
71dfc51f RK |
6253 | add_AT_die_ref (mod_type_die, DW_AT_type, sub_die); |
6254 | ||
a3f97cbb JW |
6255 | return mod_type_die; |
6256 | } | |
6257 | ||
a3f97cbb JW |
6258 | /* Given a pointer to an arbitrary ..._TYPE tree node, return true if it is |
6259 | an enumerated type. */ | |
71dfc51f RK |
6260 | |
6261 | static inline int | |
a3f97cbb JW |
6262 | type_is_enum (type) |
6263 | register tree type; | |
6264 | { | |
6265 | return TREE_CODE (type) == ENUMERAL_TYPE; | |
6266 | } | |
6267 | ||
a3f97cbb | 6268 | /* Return a location descriptor that designates a machine register. */ |
71dfc51f | 6269 | |
a3f97cbb JW |
6270 | static dw_loc_descr_ref |
6271 | reg_loc_descriptor (rtl) | |
6272 | register rtx rtl; | |
6273 | { | |
6274 | register dw_loc_descr_ref loc_result = NULL; | |
6275 | register unsigned reg = reg_number (rtl); | |
71dfc51f | 6276 | |
a3f97cbb | 6277 | if (reg >= 0 && reg <= 31) |
71dfc51f | 6278 | loc_result = new_loc_descr (DW_OP_reg0 + reg, 0, 0); |
a3f97cbb | 6279 | else |
71dfc51f RK |
6280 | loc_result = new_loc_descr (DW_OP_regx, reg, 0); |
6281 | ||
a3f97cbb JW |
6282 | return loc_result; |
6283 | } | |
6284 | ||
6285 | /* Return a location descriptor that designates a base+offset location. */ | |
71dfc51f | 6286 | |
a3f97cbb JW |
6287 | static dw_loc_descr_ref |
6288 | based_loc_descr (reg, offset) | |
6289 | unsigned reg; | |
6290 | long int offset; | |
6291 | { | |
6292 | register dw_loc_descr_ref loc_result; | |
810429b7 JM |
6293 | /* For the "frame base", we use the frame pointer or stack pointer |
6294 | registers, since the RTL for local variables is relative to one of | |
6295 | them. */ | |
6296 | register unsigned fp_reg = DBX_REGISTER_NUMBER (frame_pointer_needed | |
b1ccbc24 | 6297 | ? HARD_FRAME_POINTER_REGNUM |
810429b7 | 6298 | : STACK_POINTER_REGNUM); |
71dfc51f | 6299 | |
a3f97cbb | 6300 | if (reg == fp_reg) |
71dfc51f | 6301 | loc_result = new_loc_descr (DW_OP_fbreg, offset, 0); |
a3f97cbb | 6302 | else if (reg >= 0 && reg <= 31) |
71dfc51f | 6303 | loc_result = new_loc_descr (DW_OP_breg0 + reg, offset, 0); |
a3f97cbb | 6304 | else |
71dfc51f RK |
6305 | loc_result = new_loc_descr (DW_OP_bregx, reg, offset); |
6306 | ||
a3f97cbb JW |
6307 | return loc_result; |
6308 | } | |
6309 | ||
6310 | /* Return true if this RTL expression describes a base+offset calculation. */ | |
71dfc51f RK |
6311 | |
6312 | static inline int | |
a3f97cbb JW |
6313 | is_based_loc (rtl) |
6314 | register rtx rtl; | |
6315 | { | |
71dfc51f RK |
6316 | return (GET_CODE (rtl) == PLUS |
6317 | && ((GET_CODE (XEXP (rtl, 0)) == REG | |
6318 | && GET_CODE (XEXP (rtl, 1)) == CONST_INT))); | |
a3f97cbb JW |
6319 | } |
6320 | ||
6321 | /* The following routine converts the RTL for a variable or parameter | |
6322 | (resident in memory) into an equivalent Dwarf representation of a | |
6323 | mechanism for getting the address of that same variable onto the top of a | |
6324 | hypothetical "address evaluation" stack. | |
71dfc51f | 6325 | |
a3f97cbb JW |
6326 | When creating memory location descriptors, we are effectively transforming |
6327 | the RTL for a memory-resident object into its Dwarf postfix expression | |
6328 | equivalent. This routine recursively descends an RTL tree, turning | |
6329 | it into Dwarf postfix code as it goes. */ | |
71dfc51f | 6330 | |
a3f97cbb JW |
6331 | static dw_loc_descr_ref |
6332 | mem_loc_descriptor (rtl) | |
6333 | register rtx rtl; | |
6334 | { | |
6335 | dw_loc_descr_ref mem_loc_result = NULL; | |
6336 | /* Note that for a dynamically sized array, the location we will generate a | |
6337 | description of here will be the lowest numbered location which is | |
6338 | actually within the array. That's *not* necessarily the same as the | |
6339 | zeroth element of the array. */ | |
71dfc51f | 6340 | |
a3f97cbb JW |
6341 | switch (GET_CODE (rtl)) |
6342 | { | |
6343 | case SUBREG: | |
6344 | /* The case of a subreg may arise when we have a local (register) | |
6345 | variable or a formal (register) parameter which doesn't quite fill | |
6346 | up an entire register. For now, just assume that it is | |
6347 | legitimate to make the Dwarf info refer to the whole register which | |
6348 | contains the given subreg. */ | |
6349 | rtl = XEXP (rtl, 0); | |
71dfc51f RK |
6350 | |
6351 | /* ... fall through ... */ | |
a3f97cbb JW |
6352 | |
6353 | case REG: | |
6354 | /* Whenever a register number forms a part of the description of the | |
6355 | method for calculating the (dynamic) address of a memory resident | |
6356 | object, DWARF rules require the register number be referred to as | |
6357 | a "base register". This distinction is not based in any way upon | |
6358 | what category of register the hardware believes the given register | |
6359 | belongs to. This is strictly DWARF terminology we're dealing with | |
6360 | here. Note that in cases where the location of a memory-resident | |
6361 | data object could be expressed as: OP_ADD (OP_BASEREG (basereg), | |
6362 | OP_CONST (0)) the actual DWARF location descriptor that we generate | |
6363 | may just be OP_BASEREG (basereg). This may look deceptively like | |
6364 | the object in question was allocated to a register (rather than in | |
6365 | memory) so DWARF consumers need to be aware of the subtle | |
6366 | distinction between OP_REG and OP_BASEREG. */ | |
6367 | mem_loc_result = based_loc_descr (reg_number (rtl), 0); | |
6368 | break; | |
6369 | ||
6370 | case MEM: | |
6371 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0)); | |
6372 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_deref, 0, 0)); | |
6373 | break; | |
6374 | ||
6375 | case CONST: | |
6376 | case SYMBOL_REF: | |
6377 | mem_loc_result = new_loc_descr (DW_OP_addr, 0, 0); | |
6378 | mem_loc_result->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
6379 | mem_loc_result->dw_loc_oprnd1.v.val_addr = addr_to_string (rtl); | |
6380 | break; | |
6381 | ||
6382 | case PLUS: | |
6383 | if (is_based_loc (rtl)) | |
71dfc51f RK |
6384 | mem_loc_result = based_loc_descr (reg_number (XEXP (rtl, 0)), |
6385 | INTVAL (XEXP (rtl, 1))); | |
a3f97cbb JW |
6386 | else |
6387 | { | |
6388 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0))); | |
6389 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1))); | |
6390 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_plus, 0, 0)); | |
6391 | } | |
6392 | break; | |
6393 | ||
dd2478ae JW |
6394 | case MULT: |
6395 | /* If a pseudo-reg is optimized away, it is possible for it to | |
6396 | be replaced with a MEM containing a multiply. */ | |
6397 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0))); | |
6398 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1))); | |
6399 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_mul, 0, 0)); | |
6400 | break; | |
6401 | ||
a3f97cbb JW |
6402 | case CONST_INT: |
6403 | mem_loc_result = new_loc_descr (DW_OP_constu, INTVAL (rtl), 0); | |
6404 | break; | |
6405 | ||
6406 | default: | |
6407 | abort (); | |
6408 | } | |
71dfc51f | 6409 | |
a3f97cbb JW |
6410 | return mem_loc_result; |
6411 | } | |
6412 | ||
4401bf24 JL |
6413 | /* Return a descriptor that describes the concatination of two locations. |
6414 | This is typically a complex variable. */ | |
6415 | ||
6416 | static dw_loc_descr_ref | |
6417 | concat_loc_descriptor (x0, x1) | |
6418 | register rtx x0, x1; | |
6419 | { | |
6420 | dw_loc_descr_ref cc_loc_result = NULL; | |
6421 | ||
6422 | if (!is_pseudo_reg (x0) | |
6423 | && (GET_CODE (x0) != MEM || !is_pseudo_reg (XEXP (x0, 0)))) | |
6424 | add_loc_descr (&cc_loc_result, loc_descriptor (x0)); | |
6425 | add_loc_descr (&cc_loc_result, | |
6426 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x0)), 0)); | |
6427 | ||
6428 | if (!is_pseudo_reg (x1) | |
6429 | && (GET_CODE (x1) != MEM || !is_pseudo_reg (XEXP (x1, 0)))) | |
6430 | add_loc_descr (&cc_loc_result, loc_descriptor (x1)); | |
6431 | add_loc_descr (&cc_loc_result, | |
6432 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x1)), 0)); | |
6433 | ||
6434 | return cc_loc_result; | |
6435 | } | |
6436 | ||
a3f97cbb JW |
6437 | /* Output a proper Dwarf location descriptor for a variable or parameter |
6438 | which is either allocated in a register or in a memory location. For a | |
6439 | register, we just generate an OP_REG and the register number. For a | |
6440 | memory location we provide a Dwarf postfix expression describing how to | |
6441 | generate the (dynamic) address of the object onto the address stack. */ | |
71dfc51f | 6442 | |
a3f97cbb JW |
6443 | static dw_loc_descr_ref |
6444 | loc_descriptor (rtl) | |
6445 | register rtx rtl; | |
6446 | { | |
6447 | dw_loc_descr_ref loc_result = NULL; | |
6448 | switch (GET_CODE (rtl)) | |
6449 | { | |
6450 | case SUBREG: | |
a3f97cbb JW |
6451 | /* The case of a subreg may arise when we have a local (register) |
6452 | variable or a formal (register) parameter which doesn't quite fill | |
71dfc51f | 6453 | up an entire register. For now, just assume that it is |
a3f97cbb JW |
6454 | legitimate to make the Dwarf info refer to the whole register which |
6455 | contains the given subreg. */ | |
a3f97cbb | 6456 | rtl = XEXP (rtl, 0); |
71dfc51f RK |
6457 | |
6458 | /* ... fall through ... */ | |
a3f97cbb JW |
6459 | |
6460 | case REG: | |
5c90448c | 6461 | loc_result = reg_loc_descriptor (rtl); |
a3f97cbb JW |
6462 | break; |
6463 | ||
6464 | case MEM: | |
6465 | loc_result = mem_loc_descriptor (XEXP (rtl, 0)); | |
6466 | break; | |
6467 | ||
4401bf24 JL |
6468 | case CONCAT: |
6469 | loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1)); | |
6470 | break; | |
6471 | ||
a3f97cbb | 6472 | default: |
71dfc51f | 6473 | abort (); |
a3f97cbb | 6474 | } |
71dfc51f | 6475 | |
a3f97cbb JW |
6476 | return loc_result; |
6477 | } | |
6478 | ||
6479 | /* Given an unsigned value, round it up to the lowest multiple of `boundary' | |
6480 | which is not less than the value itself. */ | |
71dfc51f RK |
6481 | |
6482 | static inline unsigned | |
a3f97cbb JW |
6483 | ceiling (value, boundary) |
6484 | register unsigned value; | |
6485 | register unsigned boundary; | |
6486 | { | |
6487 | return (((value + boundary - 1) / boundary) * boundary); | |
6488 | } | |
6489 | ||
6490 | /* Given a pointer to what is assumed to be a FIELD_DECL node, return a | |
6491 | pointer to the declared type for the relevant field variable, or return | |
6492 | `integer_type_node' if the given node turns out to be an | |
6493 | ERROR_MARK node. */ | |
71dfc51f RK |
6494 | |
6495 | static inline tree | |
a3f97cbb JW |
6496 | field_type (decl) |
6497 | register tree decl; | |
6498 | { | |
6499 | register tree type; | |
6500 | ||
6501 | if (TREE_CODE (decl) == ERROR_MARK) | |
6502 | return integer_type_node; | |
6503 | ||
6504 | type = DECL_BIT_FIELD_TYPE (decl); | |
71dfc51f | 6505 | if (type == NULL_TREE) |
a3f97cbb JW |
6506 | type = TREE_TYPE (decl); |
6507 | ||
6508 | return type; | |
6509 | } | |
6510 | ||
6511 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
6512 | node, return the alignment in bits for the type, or else return | |
6513 | BITS_PER_WORD if the node actually turns out to be an | |
6514 | ERROR_MARK node. */ | |
71dfc51f RK |
6515 | |
6516 | static inline unsigned | |
a3f97cbb JW |
6517 | simple_type_align_in_bits (type) |
6518 | register tree type; | |
6519 | { | |
6520 | return (TREE_CODE (type) != ERROR_MARK) ? TYPE_ALIGN (type) : BITS_PER_WORD; | |
6521 | } | |
6522 | ||
6523 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
6524 | node, return the size in bits for the type if it is a constant, or else | |
6525 | return the alignment for the type if the type's size is not constant, or | |
6526 | else return BITS_PER_WORD if the type actually turns out to be an | |
6527 | ERROR_MARK node. */ | |
71dfc51f RK |
6528 | |
6529 | static inline unsigned | |
a3f97cbb JW |
6530 | simple_type_size_in_bits (type) |
6531 | register tree type; | |
6532 | { | |
6533 | if (TREE_CODE (type) == ERROR_MARK) | |
6534 | return BITS_PER_WORD; | |
6535 | else | |
6536 | { | |
6537 | register tree type_size_tree = TYPE_SIZE (type); | |
6538 | ||
6539 | if (TREE_CODE (type_size_tree) != INTEGER_CST) | |
6540 | return TYPE_ALIGN (type); | |
6541 | ||
6542 | return (unsigned) TREE_INT_CST_LOW (type_size_tree); | |
6543 | } | |
6544 | } | |
6545 | ||
6546 | /* Given a pointer to what is assumed to be a FIELD_DECL node, compute and | |
6547 | return the byte offset of the lowest addressed byte of the "containing | |
6548 | object" for the given FIELD_DECL, or return 0 if we are unable to | |
6549 | determine what that offset is, either because the argument turns out to | |
6550 | be a pointer to an ERROR_MARK node, or because the offset is actually | |
6551 | variable. (We can't handle the latter case just yet). */ | |
71dfc51f | 6552 | |
a3f97cbb JW |
6553 | static unsigned |
6554 | field_byte_offset (decl) | |
6555 | register tree decl; | |
6556 | { | |
6557 | register unsigned type_align_in_bytes; | |
6558 | register unsigned type_align_in_bits; | |
6559 | register unsigned type_size_in_bits; | |
6560 | register unsigned object_offset_in_align_units; | |
6561 | register unsigned object_offset_in_bits; | |
6562 | register unsigned object_offset_in_bytes; | |
6563 | register tree type; | |
6564 | register tree bitpos_tree; | |
6565 | register tree field_size_tree; | |
6566 | register unsigned bitpos_int; | |
6567 | register unsigned deepest_bitpos; | |
6568 | register unsigned field_size_in_bits; | |
6569 | ||
6570 | if (TREE_CODE (decl) == ERROR_MARK) | |
6571 | return 0; | |
6572 | ||
6573 | if (TREE_CODE (decl) != FIELD_DECL) | |
6574 | abort (); | |
6575 | ||
6576 | type = field_type (decl); | |
6577 | ||
6578 | bitpos_tree = DECL_FIELD_BITPOS (decl); | |
6579 | field_size_tree = DECL_SIZE (decl); | |
6580 | ||
6581 | /* We cannot yet cope with fields whose positions or sizes are variable, so | |
6582 | for now, when we see such things, we simply return 0. Someday, we may | |
6583 | be able to handle such cases, but it will be damn difficult. */ | |
6584 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
6585 | return 0; | |
6586 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); | |
6587 | ||
6588 | if (TREE_CODE (field_size_tree) != INTEGER_CST) | |
6589 | return 0; | |
a3f97cbb | 6590 | |
71dfc51f | 6591 | field_size_in_bits = (unsigned) TREE_INT_CST_LOW (field_size_tree); |
a3f97cbb | 6592 | type_size_in_bits = simple_type_size_in_bits (type); |
a3f97cbb JW |
6593 | type_align_in_bits = simple_type_align_in_bits (type); |
6594 | type_align_in_bytes = type_align_in_bits / BITS_PER_UNIT; | |
6595 | ||
6596 | /* Note that the GCC front-end doesn't make any attempt to keep track of | |
6597 | the starting bit offset (relative to the start of the containing | |
6598 | structure type) of the hypothetical "containing object" for a bit- | |
6599 | field. Thus, when computing the byte offset value for the start of the | |
6600 | "containing object" of a bit-field, we must deduce this information on | |
6601 | our own. This can be rather tricky to do in some cases. For example, | |
6602 | handling the following structure type definition when compiling for an | |
6603 | i386/i486 target (which only aligns long long's to 32-bit boundaries) | |
6604 | can be very tricky: | |
6605 | ||
6606 | struct S { int field1; long long field2:31; }; | |
6607 | ||
6608 | Fortunately, there is a simple rule-of-thumb which can be | |
6609 | used in such cases. When compiling for an i386/i486, GCC will allocate | |
6610 | 8 bytes for the structure shown above. It decides to do this based upon | |
6611 | one simple rule for bit-field allocation. Quite simply, GCC allocates | |
6612 | each "containing object" for each bit-field at the first (i.e. lowest | |
6613 | addressed) legitimate alignment boundary (based upon the required | |
6614 | minimum alignment for the declared type of the field) which it can | |
6615 | possibly use, subject to the condition that there is still enough | |
6616 | available space remaining in the containing object (when allocated at | |
6617 | the selected point) to fully accommodate all of the bits of the | |
6618 | bit-field itself. This simple rule makes it obvious why GCC allocates | |
6619 | 8 bytes for each object of the structure type shown above. When looking | |
6620 | for a place to allocate the "containing object" for `field2', the | |
6621 | compiler simply tries to allocate a 64-bit "containing object" at each | |
6622 | successive 32-bit boundary (starting at zero) until it finds a place to | |
6623 | allocate that 64- bit field such that at least 31 contiguous (and | |
6624 | previously unallocated) bits remain within that selected 64 bit field. | |
6625 | (As it turns out, for the example above, the compiler finds that it is | |
6626 | OK to allocate the "containing object" 64-bit field at bit-offset zero | |
6627 | within the structure type.) Here we attempt to work backwards from the | |
6628 | limited set of facts we're given, and we try to deduce from those facts, | |
6629 | where GCC must have believed that the containing object started (within | |
6630 | the structure type). The value we deduce is then used (by the callers of | |
6631 | this routine) to generate DW_AT_location and DW_AT_bit_offset attributes | |
6632 | for fields (both bit-fields and, in the case of DW_AT_location, regular | |
6633 | fields as well). */ | |
6634 | ||
6635 | /* Figure out the bit-distance from the start of the structure to the | |
6636 | "deepest" bit of the bit-field. */ | |
6637 | deepest_bitpos = bitpos_int + field_size_in_bits; | |
6638 | ||
6639 | /* This is the tricky part. Use some fancy footwork to deduce where the | |
6640 | lowest addressed bit of the containing object must be. */ | |
6641 | object_offset_in_bits | |
6642 | = ceiling (deepest_bitpos, type_align_in_bits) - type_size_in_bits; | |
6643 | ||
6644 | /* Compute the offset of the containing object in "alignment units". */ | |
6645 | object_offset_in_align_units = object_offset_in_bits / type_align_in_bits; | |
6646 | ||
6647 | /* Compute the offset of the containing object in bytes. */ | |
6648 | object_offset_in_bytes = object_offset_in_align_units * type_align_in_bytes; | |
6649 | ||
6650 | return object_offset_in_bytes; | |
6651 | } | |
a3f97cbb | 6652 | \f |
71dfc51f RK |
6653 | /* The following routines define various Dwarf attributes and any data |
6654 | associated with them. */ | |
a3f97cbb | 6655 | |
ef76d03b | 6656 | /* Add a location description attribute value to a DIE. |
a3f97cbb | 6657 | |
ef76d03b | 6658 | This emits location attributes suitable for whole variables and |
a3f97cbb JW |
6659 | whole parameters. Note that the location attributes for struct fields are |
6660 | generated by the routine `data_member_location_attribute' below. */ | |
71dfc51f | 6661 | |
a3f97cbb | 6662 | static void |
ef76d03b | 6663 | add_AT_location_description (die, attr_kind, rtl) |
a3f97cbb | 6664 | dw_die_ref die; |
ef76d03b | 6665 | enum dwarf_attribute attr_kind; |
a3f97cbb JW |
6666 | register rtx rtl; |
6667 | { | |
a3f97cbb JW |
6668 | /* Handle a special case. If we are about to output a location descriptor |
6669 | for a variable or parameter which has been optimized out of existence, | |
6a7a9f01 | 6670 | don't do that. A variable which has been optimized out |
a3f97cbb JW |
6671 | of existence will have a DECL_RTL value which denotes a pseudo-reg. |
6672 | Currently, in some rare cases, variables can have DECL_RTL values which | |
6673 | look like (MEM (REG pseudo-reg#)). These cases are due to bugs | |
6674 | elsewhere in the compiler. We treat such cases as if the variable(s) in | |
6a7a9f01 | 6675 | question had been optimized out of existence. */ |
a3f97cbb | 6676 | |
6a7a9f01 JM |
6677 | if (is_pseudo_reg (rtl) |
6678 | || (GET_CODE (rtl) == MEM | |
4401bf24 JL |
6679 | && is_pseudo_reg (XEXP (rtl, 0))) |
6680 | || (GET_CODE (rtl) == CONCAT | |
6681 | && is_pseudo_reg (XEXP (rtl, 0)) | |
6682 | && is_pseudo_reg (XEXP (rtl, 1)))) | |
6a7a9f01 | 6683 | return; |
a3f97cbb | 6684 | |
6a7a9f01 | 6685 | add_AT_loc (die, attr_kind, loc_descriptor (rtl)); |
a3f97cbb JW |
6686 | } |
6687 | ||
6688 | /* Attach the specialized form of location attribute used for data | |
6689 | members of struct and union types. In the special case of a | |
6690 | FIELD_DECL node which represents a bit-field, the "offset" part | |
6691 | of this special location descriptor must indicate the distance | |
6692 | in bytes from the lowest-addressed byte of the containing struct | |
6693 | or union type to the lowest-addressed byte of the "containing | |
6694 | object" for the bit-field. (See the `field_byte_offset' function | |
6695 | above).. For any given bit-field, the "containing object" is a | |
6696 | hypothetical object (of some integral or enum type) within which | |
6697 | the given bit-field lives. The type of this hypothetical | |
6698 | "containing object" is always the same as the declared type of | |
6699 | the individual bit-field itself (for GCC anyway... the DWARF | |
6700 | spec doesn't actually mandate this). Note that it is the size | |
6701 | (in bytes) of the hypothetical "containing object" which will | |
6702 | be given in the DW_AT_byte_size attribute for this bit-field. | |
6703 | (See the `byte_size_attribute' function below.) It is also used | |
6704 | when calculating the value of the DW_AT_bit_offset attribute. | |
6705 | (See the `bit_offset_attribute' function below). */ | |
71dfc51f | 6706 | |
a3f97cbb JW |
6707 | static void |
6708 | add_data_member_location_attribute (die, decl) | |
6709 | register dw_die_ref die; | |
6710 | register tree decl; | |
6711 | { | |
61b32c02 | 6712 | register unsigned long offset; |
a3f97cbb JW |
6713 | register dw_loc_descr_ref loc_descr; |
6714 | register enum dwarf_location_atom op; | |
6715 | ||
61b32c02 JM |
6716 | if (TREE_CODE (decl) == TREE_VEC) |
6717 | offset = TREE_INT_CST_LOW (BINFO_OFFSET (decl)); | |
6718 | else | |
6719 | offset = field_byte_offset (decl); | |
6720 | ||
a3f97cbb JW |
6721 | /* The DWARF2 standard says that we should assume that the structure address |
6722 | is already on the stack, so we can specify a structure field address | |
6723 | by using DW_OP_plus_uconst. */ | |
71dfc51f | 6724 | |
a3f97cbb JW |
6725 | #ifdef MIPS_DEBUGGING_INFO |
6726 | /* ??? The SGI dwarf reader does not handle the DW_OP_plus_uconst operator | |
6727 | correctly. It works only if we leave the offset on the stack. */ | |
6728 | op = DW_OP_constu; | |
6729 | #else | |
6730 | op = DW_OP_plus_uconst; | |
6731 | #endif | |
71dfc51f | 6732 | |
a3f97cbb JW |
6733 | loc_descr = new_loc_descr (op, offset, 0); |
6734 | add_AT_loc (die, DW_AT_data_member_location, loc_descr); | |
6735 | } | |
6736 | ||
6737 | /* Attach an DW_AT_const_value attribute for a variable or a parameter which | |
6738 | does not have a "location" either in memory or in a register. These | |
6739 | things can arise in GNU C when a constant is passed as an actual parameter | |
6740 | to an inlined function. They can also arise in C++ where declared | |
6741 | constants do not necessarily get memory "homes". */ | |
71dfc51f | 6742 | |
a3f97cbb JW |
6743 | static void |
6744 | add_const_value_attribute (die, rtl) | |
6745 | register dw_die_ref die; | |
6746 | register rtx rtl; | |
6747 | { | |
6748 | switch (GET_CODE (rtl)) | |
6749 | { | |
6750 | case CONST_INT: | |
6751 | /* Note that a CONST_INT rtx could represent either an integer or a | |
6752 | floating-point constant. A CONST_INT is used whenever the constant | |
6753 | will fit into a single word. In all such cases, the original mode | |
6754 | of the constant value is wiped out, and the CONST_INT rtx is | |
6755 | assigned VOIDmode. */ | |
6756 | add_AT_unsigned (die, DW_AT_const_value, (unsigned) INTVAL (rtl)); | |
6757 | break; | |
6758 | ||
6759 | case CONST_DOUBLE: | |
6760 | /* Note that a CONST_DOUBLE rtx could represent either an integer or a | |
6761 | floating-point constant. A CONST_DOUBLE is used whenever the | |
6762 | constant requires more than one word in order to be adequately | |
469ac993 JM |
6763 | represented. We output CONST_DOUBLEs as blocks. */ |
6764 | { | |
6765 | register enum machine_mode mode = GET_MODE (rtl); | |
6766 | ||
6767 | if (GET_MODE_CLASS (mode) == MODE_FLOAT) | |
6768 | { | |
71dfc51f RK |
6769 | register unsigned length = GET_MODE_SIZE (mode) / sizeof (long); |
6770 | long array[4]; | |
6771 | REAL_VALUE_TYPE rv; | |
469ac993 | 6772 | |
71dfc51f | 6773 | REAL_VALUE_FROM_CONST_DOUBLE (rv, rtl); |
469ac993 JM |
6774 | switch (mode) |
6775 | { | |
6776 | case SFmode: | |
71dfc51f | 6777 | REAL_VALUE_TO_TARGET_SINGLE (rv, array[0]); |
469ac993 JM |
6778 | break; |
6779 | ||
6780 | case DFmode: | |
71dfc51f | 6781 | REAL_VALUE_TO_TARGET_DOUBLE (rv, array); |
469ac993 JM |
6782 | break; |
6783 | ||
6784 | case XFmode: | |
6785 | case TFmode: | |
71dfc51f | 6786 | REAL_VALUE_TO_TARGET_LONG_DOUBLE (rv, array); |
469ac993 JM |
6787 | break; |
6788 | ||
6789 | default: | |
6790 | abort (); | |
6791 | } | |
6792 | ||
469ac993 JM |
6793 | add_AT_float (die, DW_AT_const_value, length, array); |
6794 | } | |
6795 | else | |
6796 | add_AT_long_long (die, DW_AT_const_value, | |
6797 | CONST_DOUBLE_HIGH (rtl), CONST_DOUBLE_LOW (rtl)); | |
6798 | } | |
a3f97cbb JW |
6799 | break; |
6800 | ||
6801 | case CONST_STRING: | |
6802 | add_AT_string (die, DW_AT_const_value, XSTR (rtl, 0)); | |
6803 | break; | |
6804 | ||
6805 | case SYMBOL_REF: | |
6806 | case LABEL_REF: | |
6807 | case CONST: | |
6808 | add_AT_addr (die, DW_AT_const_value, addr_to_string (rtl)); | |
6809 | break; | |
6810 | ||
6811 | case PLUS: | |
6812 | /* In cases where an inlined instance of an inline function is passed | |
6813 | the address of an `auto' variable (which is local to the caller) we | |
6814 | can get a situation where the DECL_RTL of the artificial local | |
6815 | variable (for the inlining) which acts as a stand-in for the | |
6816 | corresponding formal parameter (of the inline function) will look | |
6817 | like (plus:SI (reg:SI FRAME_PTR) (const_int ...)). This is not | |
6818 | exactly a compile-time constant expression, but it isn't the address | |
6819 | of the (artificial) local variable either. Rather, it represents the | |
6820 | *value* which the artificial local variable always has during its | |
6821 | lifetime. We currently have no way to represent such quasi-constant | |
6a7a9f01 | 6822 | values in Dwarf, so for now we just punt and generate nothing. */ |
a3f97cbb JW |
6823 | break; |
6824 | ||
6825 | default: | |
6826 | /* No other kinds of rtx should be possible here. */ | |
6827 | abort (); | |
6828 | } | |
6829 | ||
6830 | } | |
6831 | ||
6832 | /* Generate *either* an DW_AT_location attribute or else an DW_AT_const_value | |
6833 | data attribute for a variable or a parameter. We generate the | |
6834 | DW_AT_const_value attribute only in those cases where the given variable | |
6835 | or parameter does not have a true "location" either in memory or in a | |
6836 | register. This can happen (for example) when a constant is passed as an | |
6837 | actual argument in a call to an inline function. (It's possible that | |
6838 | these things can crop up in other ways also.) Note that one type of | |
6839 | constant value which can be passed into an inlined function is a constant | |
6840 | pointer. This can happen for example if an actual argument in an inlined | |
6841 | function call evaluates to a compile-time constant address. */ | |
71dfc51f | 6842 | |
a3f97cbb JW |
6843 | static void |
6844 | add_location_or_const_value_attribute (die, decl) | |
6845 | register dw_die_ref die; | |
6846 | register tree decl; | |
6847 | { | |
6848 | register rtx rtl; | |
6849 | register tree declared_type; | |
6850 | register tree passed_type; | |
6851 | ||
6852 | if (TREE_CODE (decl) == ERROR_MARK) | |
71dfc51f RK |
6853 | return; |
6854 | ||
6855 | if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL) | |
6856 | abort (); | |
6857 | ||
a3f97cbb JW |
6858 | /* Here we have to decide where we are going to say the parameter "lives" |
6859 | (as far as the debugger is concerned). We only have a couple of | |
6860 | choices. GCC provides us with DECL_RTL and with DECL_INCOMING_RTL. | |
71dfc51f | 6861 | |
a3f97cbb | 6862 | DECL_RTL normally indicates where the parameter lives during most of the |
71dfc51f | 6863 | activation of the function. If optimization is enabled however, this |
a3f97cbb JW |
6864 | could be either NULL or else a pseudo-reg. Both of those cases indicate |
6865 | that the parameter doesn't really live anywhere (as far as the code | |
6866 | generation parts of GCC are concerned) during most of the function's | |
6867 | activation. That will happen (for example) if the parameter is never | |
71dfc51f RK |
6868 | referenced within the function. |
6869 | ||
6870 | We could just generate a location descriptor here for all non-NULL | |
6871 | non-pseudo values of DECL_RTL and ignore all of the rest, but we can be | |
6872 | a little nicer than that if we also consider DECL_INCOMING_RTL in cases | |
6873 | where DECL_RTL is NULL or is a pseudo-reg. | |
6874 | ||
6875 | Note however that we can only get away with using DECL_INCOMING_RTL as | |
6876 | a backup substitute for DECL_RTL in certain limited cases. In cases | |
6877 | where DECL_ARG_TYPE (decl) indicates the same type as TREE_TYPE (decl), | |
6878 | we can be sure that the parameter was passed using the same type as it is | |
6879 | declared to have within the function, and that its DECL_INCOMING_RTL | |
6880 | points us to a place where a value of that type is passed. | |
6881 | ||
6882 | In cases where DECL_ARG_TYPE (decl) and TREE_TYPE (decl) are different, | |
6883 | we cannot (in general) use DECL_INCOMING_RTL as a substitute for DECL_RTL | |
6884 | because in these cases DECL_INCOMING_RTL points us to a value of some | |
6885 | type which is *different* from the type of the parameter itself. Thus, | |
6886 | if we tried to use DECL_INCOMING_RTL to generate a location attribute in | |
6887 | such cases, the debugger would end up (for example) trying to fetch a | |
6888 | `float' from a place which actually contains the first part of a | |
6889 | `double'. That would lead to really incorrect and confusing | |
6890 | output at debug-time. | |
6891 | ||
6892 | So, in general, we *do not* use DECL_INCOMING_RTL as a backup for DECL_RTL | |
6893 | in cases where DECL_ARG_TYPE (decl) != TREE_TYPE (decl). There | |
6894 | are a couple of exceptions however. On little-endian machines we can | |
6895 | get away with using DECL_INCOMING_RTL even when DECL_ARG_TYPE (decl) is | |
6896 | not the same as TREE_TYPE (decl), but only when DECL_ARG_TYPE (decl) is | |
6897 | an integral type that is smaller than TREE_TYPE (decl). These cases arise | |
6898 | when (on a little-endian machine) a non-prototyped function has a | |
6899 | parameter declared to be of type `short' or `char'. In such cases, | |
6900 | TREE_TYPE (decl) will be `short' or `char', DECL_ARG_TYPE (decl) will | |
6901 | be `int', and DECL_INCOMING_RTL will point to the lowest-order byte of the | |
6902 | passed `int' value. If the debugger then uses that address to fetch | |
6903 | a `short' or a `char' (on a little-endian machine) the result will be | |
6904 | the correct data, so we allow for such exceptional cases below. | |
6905 | ||
6906 | Note that our goal here is to describe the place where the given formal | |
6907 | parameter lives during most of the function's activation (i.e. between | |
6908 | the end of the prologue and the start of the epilogue). We'll do that | |
6909 | as best as we can. Note however that if the given formal parameter is | |
6910 | modified sometime during the execution of the function, then a stack | |
6911 | backtrace (at debug-time) will show the function as having been | |
6912 | called with the *new* value rather than the value which was | |
6913 | originally passed in. This happens rarely enough that it is not | |
6914 | a major problem, but it *is* a problem, and I'd like to fix it. | |
6915 | ||
6916 | A future version of dwarf2out.c may generate two additional | |
6917 | attributes for any given DW_TAG_formal_parameter DIE which will | |
6918 | describe the "passed type" and the "passed location" for the | |
6919 | given formal parameter in addition to the attributes we now | |
6920 | generate to indicate the "declared type" and the "active | |
6921 | location" for each parameter. This additional set of attributes | |
6922 | could be used by debuggers for stack backtraces. Separately, note | |
6923 | that sometimes DECL_RTL can be NULL and DECL_INCOMING_RTL can be | |
6924 | NULL also. This happens (for example) for inlined-instances of | |
6925 | inline function formal parameters which are never referenced. | |
6926 | This really shouldn't be happening. All PARM_DECL nodes should | |
6927 | get valid non-NULL DECL_INCOMING_RTL values, but integrate.c | |
6928 | doesn't currently generate these values for inlined instances of | |
6929 | inline function parameters, so when we see such cases, we are | |
6930 | just SOL (shit-out-of-luck) for the time being (until integrate.c | |
a3f97cbb JW |
6931 | gets fixed). */ |
6932 | ||
6933 | /* Use DECL_RTL as the "location" unless we find something better. */ | |
6934 | rtl = DECL_RTL (decl); | |
6935 | ||
6936 | if (TREE_CODE (decl) == PARM_DECL) | |
6937 | { | |
6938 | if (rtl == NULL_RTX || is_pseudo_reg (rtl)) | |
6939 | { | |
6940 | declared_type = type_main_variant (TREE_TYPE (decl)); | |
6941 | passed_type = type_main_variant (DECL_ARG_TYPE (decl)); | |
a3f97cbb | 6942 | |
71dfc51f | 6943 | /* This decl represents a formal parameter which was optimized out. |
a3f97cbb JW |
6944 | Note that DECL_INCOMING_RTL may be NULL in here, but we handle |
6945 | all* cases where (rtl == NULL_RTX) just below. */ | |
6946 | if (declared_type == passed_type) | |
71dfc51f RK |
6947 | rtl = DECL_INCOMING_RTL (decl); |
6948 | else if (! BYTES_BIG_ENDIAN | |
6949 | && TREE_CODE (declared_type) == INTEGER_TYPE | |
6950 | && TYPE_SIZE (declared_type) <= TYPE_SIZE (passed_type)) | |
6951 | rtl = DECL_INCOMING_RTL (decl); | |
a3f97cbb JW |
6952 | } |
6953 | } | |
71dfc51f | 6954 | |
61b32c02 JM |
6955 | if (rtl == NULL_RTX) |
6956 | return; | |
6957 | ||
6a7a9f01 JM |
6958 | rtl = eliminate_regs (rtl, 0, NULL_RTX, 0); |
6959 | #ifdef LEAF_REG_REMAP | |
6960 | if (leaf_function) | |
5f52dcfe | 6961 | leaf_renumber_regs_insn (rtl); |
6a7a9f01 JM |
6962 | #endif |
6963 | ||
a3f97cbb JW |
6964 | switch (GET_CODE (rtl)) |
6965 | { | |
e9a25f70 JL |
6966 | case ADDRESSOF: |
6967 | /* The address of a variable that was optimized away; don't emit | |
6968 | anything. */ | |
6969 | break; | |
6970 | ||
a3f97cbb JW |
6971 | case CONST_INT: |
6972 | case CONST_DOUBLE: | |
6973 | case CONST_STRING: | |
6974 | case SYMBOL_REF: | |
6975 | case LABEL_REF: | |
6976 | case CONST: | |
6977 | case PLUS: | |
6978 | /* DECL_RTL could be (plus (reg ...) (const_int ...)) */ | |
6979 | add_const_value_attribute (die, rtl); | |
6980 | break; | |
6981 | ||
6982 | case MEM: | |
6983 | case REG: | |
6984 | case SUBREG: | |
4401bf24 | 6985 | case CONCAT: |
ef76d03b | 6986 | add_AT_location_description (die, DW_AT_location, rtl); |
a3f97cbb JW |
6987 | break; |
6988 | ||
6989 | default: | |
71dfc51f | 6990 | abort (); |
a3f97cbb JW |
6991 | } |
6992 | } | |
6993 | ||
6994 | /* Generate an DW_AT_name attribute given some string value to be included as | |
6995 | the value of the attribute. */ | |
71dfc51f RK |
6996 | |
6997 | static inline void | |
a3f97cbb JW |
6998 | add_name_attribute (die, name_string) |
6999 | register dw_die_ref die; | |
7000 | register char *name_string; | |
7001 | { | |
71dfc51f RK |
7002 | if (name_string != NULL && *name_string != 0) |
7003 | add_AT_string (die, DW_AT_name, name_string); | |
a3f97cbb JW |
7004 | } |
7005 | ||
7006 | /* Given a tree node describing an array bound (either lower or upper) output | |
466446b0 | 7007 | a representation for that bound. */ |
71dfc51f | 7008 | |
a3f97cbb JW |
7009 | static void |
7010 | add_bound_info (subrange_die, bound_attr, bound) | |
7011 | register dw_die_ref subrange_die; | |
7012 | register enum dwarf_attribute bound_attr; | |
7013 | register tree bound; | |
7014 | { | |
a3f97cbb | 7015 | register unsigned bound_value = 0; |
ef76d03b JW |
7016 | |
7017 | /* If this is an Ada unconstrained array type, then don't emit any debug | |
7018 | info because the array bounds are unknown. They are parameterized when | |
7019 | the type is instantiated. */ | |
7020 | if (contains_placeholder_p (bound)) | |
7021 | return; | |
7022 | ||
a3f97cbb JW |
7023 | switch (TREE_CODE (bound)) |
7024 | { | |
7025 | case ERROR_MARK: | |
7026 | return; | |
7027 | ||
7028 | /* All fixed-bounds are represented by INTEGER_CST nodes. */ | |
7029 | case INTEGER_CST: | |
7030 | bound_value = TREE_INT_CST_LOW (bound); | |
141719a8 JM |
7031 | if (bound_attr == DW_AT_lower_bound |
7032 | && ((is_c_family () && bound_value == 0) | |
7033 | || (is_fortran () && bound_value == 1))) | |
7034 | /* use the default */; | |
7035 | else | |
7036 | add_AT_unsigned (subrange_die, bound_attr, bound_value); | |
a3f97cbb JW |
7037 | break; |
7038 | ||
b1ccbc24 | 7039 | case CONVERT_EXPR: |
a3f97cbb | 7040 | case NOP_EXPR: |
b1ccbc24 RK |
7041 | case NON_LVALUE_EXPR: |
7042 | add_bound_info (subrange_die, bound_attr, TREE_OPERAND (bound, 0)); | |
7043 | break; | |
7044 | ||
a3f97cbb JW |
7045 | case SAVE_EXPR: |
7046 | /* If optimization is turned on, the SAVE_EXPRs that describe how to | |
466446b0 JM |
7047 | access the upper bound values may be bogus. If they refer to a |
7048 | register, they may only describe how to get at these values at the | |
7049 | points in the generated code right after they have just been | |
7050 | computed. Worse yet, in the typical case, the upper bound values | |
7051 | will not even *be* computed in the optimized code (though the | |
7052 | number of elements will), so these SAVE_EXPRs are entirely | |
7053 | bogus. In order to compensate for this fact, we check here to see | |
7054 | if optimization is enabled, and if so, we don't add an attribute | |
7055 | for the (unknown and unknowable) upper bound. This should not | |
7056 | cause too much trouble for existing (stupid?) debuggers because | |
7057 | they have to deal with empty upper bounds location descriptions | |
7058 | anyway in order to be able to deal with incomplete array types. | |
7059 | Of course an intelligent debugger (GDB?) should be able to | |
7060 | comprehend that a missing upper bound specification in a array | |
7061 | type used for a storage class `auto' local array variable | |
7062 | indicates that the upper bound is both unknown (at compile- time) | |
7063 | and unknowable (at run-time) due to optimization. | |
7064 | ||
7065 | We assume that a MEM rtx is safe because gcc wouldn't put the | |
7066 | value there unless it was going to be used repeatedly in the | |
7067 | function, i.e. for cleanups. */ | |
7068 | if (! optimize || GET_CODE (SAVE_EXPR_RTL (bound)) == MEM) | |
a3f97cbb | 7069 | { |
466446b0 JM |
7070 | register dw_die_ref ctx = lookup_decl_die (current_function_decl); |
7071 | register dw_die_ref decl_die = new_die (DW_TAG_variable, ctx); | |
7072 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
7073 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
ef76d03b JW |
7074 | add_AT_location_description (decl_die, DW_AT_location, |
7075 | SAVE_EXPR_RTL (bound)); | |
466446b0 | 7076 | add_AT_die_ref (subrange_die, bound_attr, decl_die); |
a3f97cbb | 7077 | } |
71dfc51f RK |
7078 | |
7079 | /* Else leave out the attribute. */ | |
a3f97cbb | 7080 | break; |
3f76745e | 7081 | |
ef76d03b JW |
7082 | case MAX_EXPR: |
7083 | case VAR_DECL: | |
7084 | /* ??? These types of bounds can be created by the Ada front end, | |
7085 | and it isn't clear how to emit debug info for them. */ | |
7086 | break; | |
7087 | ||
3f76745e JM |
7088 | default: |
7089 | abort (); | |
a3f97cbb JW |
7090 | } |
7091 | } | |
7092 | ||
7093 | /* Note that the block of subscript information for an array type also | |
7094 | includes information about the element type of type given array type. */ | |
71dfc51f | 7095 | |
a3f97cbb JW |
7096 | static void |
7097 | add_subscript_info (type_die, type) | |
7098 | register dw_die_ref type_die; | |
7099 | register tree type; | |
7100 | { | |
7101 | register unsigned dimension_number; | |
7102 | register tree lower, upper; | |
7103 | register dw_die_ref subrange_die; | |
7104 | ||
7105 | /* The GNU compilers represent multidimensional array types as sequences of | |
7106 | one dimensional array types whose element types are themselves array | |
7107 | types. Here we squish that down, so that each multidimensional array | |
7108 | type gets only one array_type DIE in the Dwarf debugging info. The draft | |
7109 | Dwarf specification say that we are allowed to do this kind of | |
7110 | compression in C (because there is no difference between an array or | |
7111 | arrays and a multidimensional array in C) but for other source languages | |
7112 | (e.g. Ada) we probably shouldn't do this. */ | |
71dfc51f | 7113 | |
a3f97cbb JW |
7114 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
7115 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
7116 | We work around this by disabling this feature. See also | |
7117 | gen_array_type_die. */ | |
7118 | #ifndef MIPS_DEBUGGING_INFO | |
7119 | for (dimension_number = 0; | |
7120 | TREE_CODE (type) == ARRAY_TYPE; | |
7121 | type = TREE_TYPE (type), dimension_number++) | |
7122 | { | |
7123 | #endif | |
7124 | register tree domain = TYPE_DOMAIN (type); | |
7125 | ||
7126 | /* Arrays come in three flavors: Unspecified bounds, fixed bounds, | |
7127 | and (in GNU C only) variable bounds. Handle all three forms | |
7128 | here. */ | |
7129 | subrange_die = new_die (DW_TAG_subrange_type, type_die); | |
7130 | if (domain) | |
7131 | { | |
7132 | /* We have an array type with specified bounds. */ | |
7133 | lower = TYPE_MIN_VALUE (domain); | |
7134 | upper = TYPE_MAX_VALUE (domain); | |
7135 | ||
a9d38797 JM |
7136 | /* define the index type. */ |
7137 | if (TREE_TYPE (domain)) | |
ef76d03b JW |
7138 | { |
7139 | /* ??? This is probably an Ada unnamed subrange type. Ignore the | |
7140 | TREE_TYPE field. We can't emit debug info for this | |
7141 | because it is an unnamed integral type. */ | |
7142 | if (TREE_CODE (domain) == INTEGER_TYPE | |
7143 | && TYPE_NAME (domain) == NULL_TREE | |
7144 | && TREE_CODE (TREE_TYPE (domain)) == INTEGER_TYPE | |
7145 | && TYPE_NAME (TREE_TYPE (domain)) == NULL_TREE) | |
7146 | ; | |
7147 | else | |
7148 | add_type_attribute (subrange_die, TREE_TYPE (domain), 0, 0, | |
7149 | type_die); | |
7150 | } | |
a9d38797 | 7151 | |
141719a8 | 7152 | add_bound_info (subrange_die, DW_AT_lower_bound, lower); |
a3f97cbb JW |
7153 | add_bound_info (subrange_die, DW_AT_upper_bound, upper); |
7154 | } | |
7155 | else | |
71dfc51f | 7156 | /* We have an array type with an unspecified length. The DWARF-2 |
a9d38797 JM |
7157 | spec does not say how to handle this; let's just leave out the |
7158 | bounds. */ | |
71dfc51f RK |
7159 | ; |
7160 | ||
a3f97cbb JW |
7161 | #ifndef MIPS_DEBUGGING_INFO |
7162 | } | |
7163 | #endif | |
7164 | } | |
7165 | ||
7166 | static void | |
7167 | add_byte_size_attribute (die, tree_node) | |
7168 | dw_die_ref die; | |
7169 | register tree tree_node; | |
7170 | { | |
7171 | register unsigned size; | |
7172 | ||
7173 | switch (TREE_CODE (tree_node)) | |
7174 | { | |
7175 | case ERROR_MARK: | |
7176 | size = 0; | |
7177 | break; | |
7178 | case ENUMERAL_TYPE: | |
7179 | case RECORD_TYPE: | |
7180 | case UNION_TYPE: | |
7181 | case QUAL_UNION_TYPE: | |
7182 | size = int_size_in_bytes (tree_node); | |
7183 | break; | |
7184 | case FIELD_DECL: | |
7185 | /* For a data member of a struct or union, the DW_AT_byte_size is | |
7186 | generally given as the number of bytes normally allocated for an | |
7187 | object of the *declared* type of the member itself. This is true | |
7188 | even for bit-fields. */ | |
7189 | size = simple_type_size_in_bits (field_type (tree_node)) / BITS_PER_UNIT; | |
7190 | break; | |
7191 | default: | |
7192 | abort (); | |
7193 | } | |
7194 | ||
7195 | /* Note that `size' might be -1 when we get to this point. If it is, that | |
7196 | indicates that the byte size of the entity in question is variable. We | |
7197 | have no good way of expressing this fact in Dwarf at the present time, | |
7198 | so just let the -1 pass on through. */ | |
7199 | ||
7200 | add_AT_unsigned (die, DW_AT_byte_size, size); | |
7201 | } | |
7202 | ||
7203 | /* For a FIELD_DECL node which represents a bit-field, output an attribute | |
7204 | which specifies the distance in bits from the highest order bit of the | |
7205 | "containing object" for the bit-field to the highest order bit of the | |
7206 | bit-field itself. | |
7207 | ||
b2932ae5 JM |
7208 | For any given bit-field, the "containing object" is a hypothetical |
7209 | object (of some integral or enum type) within which the given bit-field | |
7210 | lives. The type of this hypothetical "containing object" is always the | |
7211 | same as the declared type of the individual bit-field itself. The | |
7212 | determination of the exact location of the "containing object" for a | |
7213 | bit-field is rather complicated. It's handled by the | |
7214 | `field_byte_offset' function (above). | |
a3f97cbb JW |
7215 | |
7216 | Note that it is the size (in bytes) of the hypothetical "containing object" | |
7217 | which will be given in the DW_AT_byte_size attribute for this bit-field. | |
7218 | (See `byte_size_attribute' above). */ | |
71dfc51f RK |
7219 | |
7220 | static inline void | |
a3f97cbb JW |
7221 | add_bit_offset_attribute (die, decl) |
7222 | register dw_die_ref die; | |
7223 | register tree decl; | |
7224 | { | |
7225 | register unsigned object_offset_in_bytes = field_byte_offset (decl); | |
7226 | register tree type = DECL_BIT_FIELD_TYPE (decl); | |
7227 | register tree bitpos_tree = DECL_FIELD_BITPOS (decl); | |
7228 | register unsigned bitpos_int; | |
7229 | register unsigned highest_order_object_bit_offset; | |
7230 | register unsigned highest_order_field_bit_offset; | |
7231 | register unsigned bit_offset; | |
7232 | ||
3a88cbd1 JL |
7233 | /* Must be a field and a bit field. */ |
7234 | if (!type | |
7235 | || TREE_CODE (decl) != FIELD_DECL) | |
7236 | abort (); | |
a3f97cbb JW |
7237 | |
7238 | /* We can't yet handle bit-fields whose offsets are variable, so if we | |
7239 | encounter such things, just return without generating any attribute | |
7240 | whatsoever. */ | |
7241 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
71dfc51f RK |
7242 | return; |
7243 | ||
a3f97cbb JW |
7244 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); |
7245 | ||
7246 | /* Note that the bit offset is always the distance (in bits) from the | |
7247 | highest-order bit of the "containing object" to the highest-order bit of | |
7248 | the bit-field itself. Since the "high-order end" of any object or field | |
7249 | is different on big-endian and little-endian machines, the computation | |
7250 | below must take account of these differences. */ | |
7251 | highest_order_object_bit_offset = object_offset_in_bytes * BITS_PER_UNIT; | |
7252 | highest_order_field_bit_offset = bitpos_int; | |
7253 | ||
71dfc51f | 7254 | if (! BYTES_BIG_ENDIAN) |
a3f97cbb JW |
7255 | { |
7256 | highest_order_field_bit_offset | |
7257 | += (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl)); | |
7258 | ||
7259 | highest_order_object_bit_offset += simple_type_size_in_bits (type); | |
7260 | } | |
71dfc51f RK |
7261 | |
7262 | bit_offset | |
7263 | = (! BYTES_BIG_ENDIAN | |
7264 | ? highest_order_object_bit_offset - highest_order_field_bit_offset | |
7265 | : highest_order_field_bit_offset - highest_order_object_bit_offset); | |
a3f97cbb JW |
7266 | |
7267 | add_AT_unsigned (die, DW_AT_bit_offset, bit_offset); | |
7268 | } | |
7269 | ||
7270 | /* For a FIELD_DECL node which represents a bit field, output an attribute | |
7271 | which specifies the length in bits of the given field. */ | |
71dfc51f RK |
7272 | |
7273 | static inline void | |
a3f97cbb JW |
7274 | add_bit_size_attribute (die, decl) |
7275 | register dw_die_ref die; | |
7276 | register tree decl; | |
7277 | { | |
3a88cbd1 JL |
7278 | /* Must be a field and a bit field. */ |
7279 | if (TREE_CODE (decl) != FIELD_DECL | |
7280 | || ! DECL_BIT_FIELD_TYPE (decl)) | |
7281 | abort (); | |
a3f97cbb JW |
7282 | add_AT_unsigned (die, DW_AT_bit_size, |
7283 | (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl))); | |
7284 | } | |
7285 | ||
88dad228 | 7286 | /* If the compiled language is ANSI C, then add a 'prototyped' |
a3f97cbb | 7287 | attribute, if arg types are given for the parameters of a function. */ |
71dfc51f RK |
7288 | |
7289 | static inline void | |
a3f97cbb JW |
7290 | add_prototyped_attribute (die, func_type) |
7291 | register dw_die_ref die; | |
7292 | register tree func_type; | |
7293 | { | |
88dad228 JM |
7294 | if (get_AT_unsigned (comp_unit_die, DW_AT_language) == DW_LANG_C89 |
7295 | && TYPE_ARG_TYPES (func_type) != NULL) | |
7296 | add_AT_flag (die, DW_AT_prototyped, 1); | |
a3f97cbb JW |
7297 | } |
7298 | ||
7299 | ||
7300 | /* Add an 'abstract_origin' attribute below a given DIE. The DIE is found | |
7301 | by looking in either the type declaration or object declaration | |
7302 | equate table. */ | |
71dfc51f RK |
7303 | |
7304 | static inline void | |
a3f97cbb JW |
7305 | add_abstract_origin_attribute (die, origin) |
7306 | register dw_die_ref die; | |
7307 | register tree origin; | |
7308 | { | |
7309 | dw_die_ref origin_die = NULL; | |
7310 | if (TREE_CODE_CLASS (TREE_CODE (origin)) == 'd') | |
71dfc51f | 7311 | origin_die = lookup_decl_die (origin); |
a3f97cbb | 7312 | else if (TREE_CODE_CLASS (TREE_CODE (origin)) == 't') |
71dfc51f RK |
7313 | origin_die = lookup_type_die (origin); |
7314 | ||
a3f97cbb JW |
7315 | add_AT_die_ref (die, DW_AT_abstract_origin, origin_die); |
7316 | } | |
7317 | ||
bdb669cb JM |
7318 | /* We do not currently support the pure_virtual attribute. */ |
7319 | ||
71dfc51f | 7320 | static inline void |
a3f97cbb JW |
7321 | add_pure_or_virtual_attribute (die, func_decl) |
7322 | register dw_die_ref die; | |
7323 | register tree func_decl; | |
7324 | { | |
a94dbf2c | 7325 | if (DECL_VINDEX (func_decl)) |
a3f97cbb | 7326 | { |
bdb669cb | 7327 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); |
71dfc51f RK |
7328 | add_AT_loc (die, DW_AT_vtable_elem_location, |
7329 | new_loc_descr (DW_OP_constu, | |
7330 | TREE_INT_CST_LOW (DECL_VINDEX (func_decl)), | |
7331 | 0)); | |
7332 | ||
a94dbf2c JM |
7333 | /* GNU extension: Record what type this method came from originally. */ |
7334 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
7335 | add_AT_die_ref (die, DW_AT_containing_type, | |
7336 | lookup_type_die (DECL_CONTEXT (func_decl))); | |
a3f97cbb JW |
7337 | } |
7338 | } | |
7339 | \f | |
b2932ae5 | 7340 | /* Add source coordinate attributes for the given decl. */ |
71dfc51f | 7341 | |
b2932ae5 JM |
7342 | static void |
7343 | add_src_coords_attributes (die, decl) | |
7344 | register dw_die_ref die; | |
7345 | register tree decl; | |
7346 | { | |
7347 | register unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 7348 | |
b2932ae5 JM |
7349 | add_AT_unsigned (die, DW_AT_decl_file, file_index); |
7350 | add_AT_unsigned (die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
7351 | } | |
7352 | ||
a3f97cbb JW |
7353 | /* Add an DW_AT_name attribute and source coordinate attribute for the |
7354 | given decl, but only if it actually has a name. */ | |
71dfc51f | 7355 | |
a3f97cbb JW |
7356 | static void |
7357 | add_name_and_src_coords_attributes (die, decl) | |
7358 | register dw_die_ref die; | |
7359 | register tree decl; | |
7360 | { | |
61b32c02 | 7361 | register tree decl_name; |
71dfc51f | 7362 | |
a1d7ffe3 | 7363 | decl_name = DECL_NAME (decl); |
71dfc51f | 7364 | if (decl_name != NULL && IDENTIFIER_POINTER (decl_name) != NULL) |
a3f97cbb | 7365 | { |
a1d7ffe3 | 7366 | add_name_attribute (die, dwarf2_name (decl, 0)); |
b2932ae5 | 7367 | add_src_coords_attributes (die, decl); |
a1d7ffe3 JM |
7368 | if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL) |
7369 | && DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl)) | |
7370 | add_AT_string (die, DW_AT_MIPS_linkage_name, | |
7371 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
a3f97cbb JW |
7372 | } |
7373 | } | |
7374 | ||
7375 | /* Push a new declaration scope. */ | |
71dfc51f | 7376 | |
a3f97cbb JW |
7377 | static void |
7378 | push_decl_scope (scope) | |
7379 | tree scope; | |
7380 | { | |
7381 | /* Make room in the decl_scope_table, if necessary. */ | |
7382 | if (decl_scope_table_allocated == decl_scope_depth) | |
7383 | { | |
7384 | decl_scope_table_allocated += DECL_SCOPE_TABLE_INCREMENT; | |
71dfc51f RK |
7385 | decl_scope_table |
7386 | = (tree *) xrealloc (decl_scope_table, | |
7387 | decl_scope_table_allocated * sizeof (tree)); | |
a3f97cbb | 7388 | } |
71dfc51f | 7389 | |
a3f97cbb JW |
7390 | decl_scope_table[decl_scope_depth++] = scope; |
7391 | } | |
7392 | ||
7393 | /* Return the DIE for the scope the immediately contains this declaration. */ | |
71dfc51f | 7394 | |
a3f97cbb | 7395 | static dw_die_ref |
ab72d377 JM |
7396 | scope_die_for (t, context_die) |
7397 | register tree t; | |
a3f97cbb JW |
7398 | register dw_die_ref context_die; |
7399 | { | |
7400 | register dw_die_ref scope_die = NULL; | |
7401 | register tree containing_scope; | |
7402 | register unsigned long i; | |
7403 | ||
7404 | /* Walk back up the declaration tree looking for a place to define | |
7405 | this type. */ | |
ab72d377 JM |
7406 | if (TREE_CODE_CLASS (TREE_CODE (t)) == 't') |
7407 | containing_scope = TYPE_CONTEXT (t); | |
a94dbf2c | 7408 | else if (TREE_CODE (t) == FUNCTION_DECL && DECL_VINDEX (t)) |
ab72d377 JM |
7409 | containing_scope = decl_class_context (t); |
7410 | else | |
7411 | containing_scope = DECL_CONTEXT (t); | |
7412 | ||
ef76d03b JW |
7413 | /* Function-local tags and functions get stuck in limbo until they are |
7414 | fixed up by decls_for_scope. */ | |
7415 | if (context_die == NULL && containing_scope != NULL_TREE | |
7416 | && (TREE_CODE (t) == FUNCTION_DECL || is_tagged_type (t))) | |
7417 | return NULL; | |
7418 | ||
71dfc51f RK |
7419 | if (containing_scope == NULL_TREE) |
7420 | scope_die = comp_unit_die; | |
a3f97cbb JW |
7421 | else |
7422 | { | |
ab72d377 JM |
7423 | for (i = decl_scope_depth, scope_die = context_die; |
7424 | i > 0 && decl_scope_table[i - 1] != containing_scope; | |
7d4440be | 7425 | scope_die = scope_die->die_parent, --i) |
71dfc51f RK |
7426 | ; |
7427 | ||
ab72d377 | 7428 | if (i == 0) |
a3f97cbb | 7429 | { |
3a88cbd1 JL |
7430 | if (scope_die != comp_unit_die |
7431 | || TREE_CODE_CLASS (TREE_CODE (containing_scope)) != 't') | |
7432 | abort (); | |
7433 | if (debug_info_level > DINFO_LEVEL_TERSE | |
7434 | && !TREE_ASM_WRITTEN (containing_scope)) | |
7435 | abort (); | |
a3f97cbb JW |
7436 | } |
7437 | } | |
71dfc51f | 7438 | |
a3f97cbb JW |
7439 | return scope_die; |
7440 | } | |
7441 | ||
7442 | /* Pop a declaration scope. */ | |
71dfc51f | 7443 | static inline void |
a3f97cbb JW |
7444 | pop_decl_scope () |
7445 | { | |
3a88cbd1 JL |
7446 | if (decl_scope_depth <= 0) |
7447 | abort (); | |
a3f97cbb JW |
7448 | --decl_scope_depth; |
7449 | } | |
7450 | ||
7451 | /* Many forms of DIEs require a "type description" attribute. This | |
7452 | routine locates the proper "type descriptor" die for the type given | |
7453 | by 'type', and adds an DW_AT_type attribute below the given die. */ | |
71dfc51f | 7454 | |
a3f97cbb JW |
7455 | static void |
7456 | add_type_attribute (object_die, type, decl_const, decl_volatile, context_die) | |
7457 | register dw_die_ref object_die; | |
7458 | register tree type; | |
7459 | register int decl_const; | |
7460 | register int decl_volatile; | |
7461 | register dw_die_ref context_die; | |
7462 | { | |
7463 | register enum tree_code code = TREE_CODE (type); | |
a3f97cbb JW |
7464 | register dw_die_ref type_die = NULL; |
7465 | ||
ef76d03b JW |
7466 | /* ??? If this type is an unnamed subrange type of an integral or |
7467 | floating-point type, use the inner type. This is because we have no | |
7468 | support for unnamed types in base_type_die. This can happen if this is | |
7469 | an Ada subrange type. Correct solution is emit a subrange type die. */ | |
b1ccbc24 RK |
7470 | if ((code == INTEGER_TYPE || code == REAL_TYPE) |
7471 | && TREE_TYPE (type) != 0 && TYPE_NAME (type) == 0) | |
7472 | type = TREE_TYPE (type), code = TREE_CODE (type); | |
7473 | ||
a3f97cbb | 7474 | if (code == ERROR_MARK) |
b1ccbc24 | 7475 | return; |
a3f97cbb JW |
7476 | |
7477 | /* Handle a special case. For functions whose return type is void, we | |
7478 | generate *no* type attribute. (Note that no object may have type | |
7479 | `void', so this only applies to function return types). */ | |
7480 | if (code == VOID_TYPE) | |
b1ccbc24 | 7481 | return; |
a3f97cbb | 7482 | |
a3f97cbb JW |
7483 | type_die = modified_type_die (type, |
7484 | decl_const || TYPE_READONLY (type), | |
7485 | decl_volatile || TYPE_VOLATILE (type), | |
ab72d377 | 7486 | context_die); |
a3f97cbb | 7487 | if (type_die != NULL) |
71dfc51f | 7488 | add_AT_die_ref (object_die, DW_AT_type, type_die); |
a3f97cbb JW |
7489 | } |
7490 | ||
7491 | /* Given a tree pointer to a struct, class, union, or enum type node, return | |
7492 | a pointer to the (string) tag name for the given type, or zero if the type | |
7493 | was declared without a tag. */ | |
71dfc51f | 7494 | |
a3f97cbb JW |
7495 | static char * |
7496 | type_tag (type) | |
7497 | register tree type; | |
7498 | { | |
7499 | register char *name = 0; | |
7500 | ||
7501 | if (TYPE_NAME (type) != 0) | |
7502 | { | |
7503 | register tree t = 0; | |
7504 | ||
7505 | /* Find the IDENTIFIER_NODE for the type name. */ | |
7506 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
7507 | t = TYPE_NAME (type); | |
bdb669cb | 7508 | |
a3f97cbb JW |
7509 | /* The g++ front end makes the TYPE_NAME of *each* tagged type point to |
7510 | a TYPE_DECL node, regardless of whether or not a `typedef' was | |
bdb669cb | 7511 | involved. */ |
a94dbf2c JM |
7512 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
7513 | && ! DECL_IGNORED_P (TYPE_NAME (type))) | |
a3f97cbb | 7514 | t = DECL_NAME (TYPE_NAME (type)); |
bdb669cb | 7515 | |
a3f97cbb JW |
7516 | /* Now get the name as a string, or invent one. */ |
7517 | if (t != 0) | |
a94dbf2c | 7518 | name = IDENTIFIER_POINTER (t); |
a3f97cbb | 7519 | } |
71dfc51f | 7520 | |
a3f97cbb JW |
7521 | return (name == 0 || *name == '\0') ? 0 : name; |
7522 | } | |
7523 | ||
7524 | /* Return the type associated with a data member, make a special check | |
7525 | for bit field types. */ | |
71dfc51f RK |
7526 | |
7527 | static inline tree | |
a3f97cbb JW |
7528 | member_declared_type (member) |
7529 | register tree member; | |
7530 | { | |
71dfc51f RK |
7531 | return (DECL_BIT_FIELD_TYPE (member) |
7532 | ? DECL_BIT_FIELD_TYPE (member) | |
7533 | : TREE_TYPE (member)); | |
a3f97cbb JW |
7534 | } |
7535 | ||
d291dd49 | 7536 | /* Get the decl's label, as described by its RTL. This may be different |
a3f97cbb | 7537 | from the DECL_NAME name used in the source file. */ |
71dfc51f | 7538 | |
a3f97cbb | 7539 | static char * |
d291dd49 | 7540 | decl_start_label (decl) |
a3f97cbb JW |
7541 | register tree decl; |
7542 | { | |
7543 | rtx x; | |
7544 | char *fnname; | |
7545 | x = DECL_RTL (decl); | |
7546 | if (GET_CODE (x) != MEM) | |
71dfc51f RK |
7547 | abort (); |
7548 | ||
a3f97cbb JW |
7549 | x = XEXP (x, 0); |
7550 | if (GET_CODE (x) != SYMBOL_REF) | |
71dfc51f RK |
7551 | abort (); |
7552 | ||
a3f97cbb JW |
7553 | fnname = XSTR (x, 0); |
7554 | return fnname; | |
7555 | } | |
7556 | \f | |
a3f97cbb JW |
7557 | /* These routines generate the internnal representation of the DIE's for |
7558 | the compilation unit. Debugging information is collected by walking | |
88dad228 | 7559 | the declaration trees passed in from dwarf2out_decl(). */ |
a3f97cbb JW |
7560 | |
7561 | static void | |
7562 | gen_array_type_die (type, context_die) | |
7563 | register tree type; | |
7564 | register dw_die_ref context_die; | |
7565 | { | |
ab72d377 | 7566 | register dw_die_ref scope_die = scope_die_for (type, context_die); |
a9d38797 | 7567 | register dw_die_ref array_die; |
a3f97cbb | 7568 | register tree element_type; |
bdb669cb | 7569 | |
a9d38797 JM |
7570 | /* ??? The SGI dwarf reader fails for array of array of enum types unless |
7571 | the inner array type comes before the outer array type. Thus we must | |
7572 | call gen_type_die before we call new_die. See below also. */ | |
7573 | #ifdef MIPS_DEBUGGING_INFO | |
7574 | gen_type_die (TREE_TYPE (type), context_die); | |
7575 | #endif | |
7576 | ||
7577 | array_die = new_die (DW_TAG_array_type, scope_die); | |
7578 | ||
a3f97cbb JW |
7579 | #if 0 |
7580 | /* We default the array ordering. SDB will probably do | |
7581 | the right things even if DW_AT_ordering is not present. It's not even | |
7582 | an issue until we start to get into multidimensional arrays anyway. If | |
7583 | SDB is ever caught doing the Wrong Thing for multi-dimensional arrays, | |
7584 | then we'll have to put the DW_AT_ordering attribute back in. (But if | |
7585 | and when we find out that we need to put these in, we will only do so | |
7586 | for multidimensional arrays. */ | |
7587 | add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_row_major); | |
7588 | #endif | |
7589 | ||
a9d38797 | 7590 | #ifdef MIPS_DEBUGGING_INFO |
4edb7b60 JM |
7591 | /* The SGI compilers handle arrays of unknown bound by setting |
7592 | AT_declaration and not emitting any subrange DIEs. */ | |
a9d38797 JM |
7593 | if (! TYPE_DOMAIN (type)) |
7594 | add_AT_unsigned (array_die, DW_AT_declaration, 1); | |
7595 | else | |
7596 | #endif | |
7597 | add_subscript_info (array_die, type); | |
a3f97cbb JW |
7598 | |
7599 | equate_type_number_to_die (type, array_die); | |
7600 | ||
7601 | /* Add representation of the type of the elements of this array type. */ | |
7602 | element_type = TREE_TYPE (type); | |
71dfc51f | 7603 | |
a3f97cbb JW |
7604 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
7605 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
7606 | We work around this by disabling this feature. See also | |
7607 | add_subscript_info. */ | |
7608 | #ifndef MIPS_DEBUGGING_INFO | |
71dfc51f RK |
7609 | while (TREE_CODE (element_type) == ARRAY_TYPE) |
7610 | element_type = TREE_TYPE (element_type); | |
7611 | ||
a3f97cbb | 7612 | gen_type_die (element_type, context_die); |
a9d38797 | 7613 | #endif |
a3f97cbb JW |
7614 | |
7615 | add_type_attribute (array_die, element_type, 0, 0, context_die); | |
7616 | } | |
7617 | ||
7618 | static void | |
7619 | gen_set_type_die (type, context_die) | |
7620 | register tree type; | |
7621 | register dw_die_ref context_die; | |
7622 | { | |
71dfc51f RK |
7623 | register dw_die_ref type_die |
7624 | = new_die (DW_TAG_set_type, scope_die_for (type, context_die)); | |
7625 | ||
a3f97cbb | 7626 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
7627 | add_type_attribute (type_die, TREE_TYPE (type), 0, 0, context_die); |
7628 | } | |
7629 | ||
7630 | static void | |
7631 | gen_entry_point_die (decl, context_die) | |
7632 | register tree decl; | |
7633 | register dw_die_ref context_die; | |
7634 | { | |
7635 | register tree origin = decl_ultimate_origin (decl); | |
7636 | register dw_die_ref decl_die = new_die (DW_TAG_entry_point, context_die); | |
7637 | if (origin != NULL) | |
71dfc51f | 7638 | add_abstract_origin_attribute (decl_die, origin); |
a3f97cbb JW |
7639 | else |
7640 | { | |
7641 | add_name_and_src_coords_attributes (decl_die, decl); | |
a3f97cbb JW |
7642 | add_type_attribute (decl_die, TREE_TYPE (TREE_TYPE (decl)), |
7643 | 0, 0, context_die); | |
7644 | } | |
71dfc51f | 7645 | |
a3f97cbb | 7646 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 7647 | equate_decl_number_to_die (decl, decl_die); |
a3f97cbb | 7648 | else |
71dfc51f | 7649 | add_AT_lbl_id (decl_die, DW_AT_low_pc, decl_start_label (decl)); |
a3f97cbb JW |
7650 | } |
7651 | ||
a94dbf2c JM |
7652 | /* Remember a type in the pending_types_list. */ |
7653 | ||
7654 | static void | |
7655 | pend_type (type) | |
7656 | register tree type; | |
7657 | { | |
7658 | if (pending_types == pending_types_allocated) | |
7659 | { | |
7660 | pending_types_allocated += PENDING_TYPES_INCREMENT; | |
7661 | pending_types_list | |
7662 | = (tree *) xrealloc (pending_types_list, | |
7663 | sizeof (tree) * pending_types_allocated); | |
7664 | } | |
71dfc51f | 7665 | |
a94dbf2c JM |
7666 | pending_types_list[pending_types++] = type; |
7667 | } | |
7668 | ||
7669 | /* Output any pending types (from the pending_types list) which we can output | |
7670 | now (taking into account the scope that we are working on now). | |
7671 | ||
7672 | For each type output, remove the given type from the pending_types_list | |
7673 | *before* we try to output it. */ | |
7674 | ||
7675 | static void | |
7676 | output_pending_types_for_scope (context_die) | |
7677 | register dw_die_ref context_die; | |
7678 | { | |
7679 | register tree type; | |
7680 | ||
7681 | while (pending_types) | |
7682 | { | |
7683 | --pending_types; | |
7684 | type = pending_types_list[pending_types]; | |
7685 | gen_type_die (type, context_die); | |
3a88cbd1 JL |
7686 | if (!TREE_ASM_WRITTEN (type)) |
7687 | abort (); | |
a94dbf2c JM |
7688 | } |
7689 | } | |
7690 | ||
a3f97cbb | 7691 | /* Generate a DIE to represent an inlined instance of an enumeration type. */ |
71dfc51f | 7692 | |
a3f97cbb JW |
7693 | static void |
7694 | gen_inlined_enumeration_type_die (type, context_die) | |
7695 | register tree type; | |
7696 | register dw_die_ref context_die; | |
7697 | { | |
71dfc51f RK |
7698 | register dw_die_ref type_die = new_die (DW_TAG_enumeration_type, |
7699 | scope_die_for (type, context_die)); | |
7700 | ||
3a88cbd1 JL |
7701 | if (!TREE_ASM_WRITTEN (type)) |
7702 | abort (); | |
a3f97cbb JW |
7703 | add_abstract_origin_attribute (type_die, type); |
7704 | } | |
7705 | ||
7706 | /* Generate a DIE to represent an inlined instance of a structure type. */ | |
71dfc51f | 7707 | |
a3f97cbb JW |
7708 | static void |
7709 | gen_inlined_structure_type_die (type, context_die) | |
7710 | register tree type; | |
7711 | register dw_die_ref context_die; | |
7712 | { | |
71dfc51f RK |
7713 | register dw_die_ref type_die = new_die (DW_TAG_structure_type, |
7714 | scope_die_for (type, context_die)); | |
7715 | ||
3a88cbd1 JL |
7716 | if (!TREE_ASM_WRITTEN (type)) |
7717 | abort (); | |
a3f97cbb JW |
7718 | add_abstract_origin_attribute (type_die, type); |
7719 | } | |
7720 | ||
7721 | /* Generate a DIE to represent an inlined instance of a union type. */ | |
71dfc51f | 7722 | |
a3f97cbb JW |
7723 | static void |
7724 | gen_inlined_union_type_die (type, context_die) | |
7725 | register tree type; | |
7726 | register dw_die_ref context_die; | |
7727 | { | |
71dfc51f RK |
7728 | register dw_die_ref type_die = new_die (DW_TAG_union_type, |
7729 | scope_die_for (type, context_die)); | |
7730 | ||
3a88cbd1 JL |
7731 | if (!TREE_ASM_WRITTEN (type)) |
7732 | abort (); | |
a3f97cbb JW |
7733 | add_abstract_origin_attribute (type_die, type); |
7734 | } | |
7735 | ||
7736 | /* Generate a DIE to represent an enumeration type. Note that these DIEs | |
7737 | include all of the information about the enumeration values also. Each | |
273dbe67 JM |
7738 | enumerated type name/value is listed as a child of the enumerated type |
7739 | DIE. */ | |
71dfc51f | 7740 | |
a3f97cbb | 7741 | static void |
273dbe67 | 7742 | gen_enumeration_type_die (type, context_die) |
a3f97cbb | 7743 | register tree type; |
a3f97cbb JW |
7744 | register dw_die_ref context_die; |
7745 | { | |
273dbe67 JM |
7746 | register dw_die_ref type_die = lookup_type_die (type); |
7747 | ||
a3f97cbb JW |
7748 | if (type_die == NULL) |
7749 | { | |
7750 | type_die = new_die (DW_TAG_enumeration_type, | |
ab72d377 | 7751 | scope_die_for (type, context_die)); |
a3f97cbb JW |
7752 | equate_type_number_to_die (type, type_die); |
7753 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 7754 | } |
273dbe67 JM |
7755 | else if (! TYPE_SIZE (type)) |
7756 | return; | |
7757 | else | |
7758 | remove_AT (type_die, DW_AT_declaration); | |
7759 | ||
7760 | /* Handle a GNU C/C++ extension, i.e. incomplete enum types. If the | |
7761 | given enum type is incomplete, do not generate the DW_AT_byte_size | |
7762 | attribute or the DW_AT_element_list attribute. */ | |
7763 | if (TYPE_SIZE (type)) | |
a3f97cbb | 7764 | { |
273dbe67 | 7765 | register tree link; |
71dfc51f | 7766 | |
a082c85a | 7767 | TREE_ASM_WRITTEN (type) = 1; |
273dbe67 | 7768 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 7769 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 7770 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 7771 | |
ef76d03b JW |
7772 | /* If the first reference to this type was as the return type of an |
7773 | inline function, then it may not have a parent. Fix this now. */ | |
7774 | if (type_die->die_parent == NULL) | |
7775 | add_child_die (scope_die_for (type, context_die), type_die); | |
7776 | ||
273dbe67 JM |
7777 | for (link = TYPE_FIELDS (type); |
7778 | link != NULL; link = TREE_CHAIN (link)) | |
a3f97cbb | 7779 | { |
273dbe67 | 7780 | register dw_die_ref enum_die = new_die (DW_TAG_enumerator, type_die); |
71dfc51f | 7781 | |
273dbe67 JM |
7782 | add_name_attribute (enum_die, |
7783 | IDENTIFIER_POINTER (TREE_PURPOSE (link))); | |
7784 | add_AT_unsigned (enum_die, DW_AT_const_value, | |
a3f97cbb | 7785 | (unsigned) TREE_INT_CST_LOW (TREE_VALUE (link))); |
a3f97cbb JW |
7786 | } |
7787 | } | |
273dbe67 JM |
7788 | else |
7789 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
7790 | } |
7791 | ||
7792 | ||
7793 | /* Generate a DIE to represent either a real live formal parameter decl or to | |
7794 | represent just the type of some formal parameter position in some function | |
7795 | type. | |
71dfc51f | 7796 | |
a3f97cbb JW |
7797 | Note that this routine is a bit unusual because its argument may be a |
7798 | ..._DECL node (i.e. either a PARM_DECL or perhaps a VAR_DECL which | |
7799 | represents an inlining of some PARM_DECL) or else some sort of a ..._TYPE | |
7800 | node. If it's the former then this function is being called to output a | |
7801 | DIE to represent a formal parameter object (or some inlining thereof). If | |
7802 | it's the latter, then this function is only being called to output a | |
7803 | DW_TAG_formal_parameter DIE to stand as a placeholder for some formal | |
7804 | argument type of some subprogram type. */ | |
71dfc51f | 7805 | |
a94dbf2c | 7806 | static dw_die_ref |
a3f97cbb JW |
7807 | gen_formal_parameter_die (node, context_die) |
7808 | register tree node; | |
7809 | register dw_die_ref context_die; | |
7810 | { | |
71dfc51f RK |
7811 | register dw_die_ref parm_die |
7812 | = new_die (DW_TAG_formal_parameter, context_die); | |
a3f97cbb | 7813 | register tree origin; |
71dfc51f | 7814 | |
a3f97cbb JW |
7815 | switch (TREE_CODE_CLASS (TREE_CODE (node))) |
7816 | { | |
a3f97cbb JW |
7817 | case 'd': |
7818 | origin = decl_ultimate_origin (node); | |
7819 | if (origin != NULL) | |
a94dbf2c | 7820 | add_abstract_origin_attribute (parm_die, origin); |
a3f97cbb JW |
7821 | else |
7822 | { | |
7823 | add_name_and_src_coords_attributes (parm_die, node); | |
7824 | add_type_attribute (parm_die, TREE_TYPE (node), | |
7825 | TREE_READONLY (node), | |
7826 | TREE_THIS_VOLATILE (node), | |
7827 | context_die); | |
bdb669cb JM |
7828 | if (DECL_ARTIFICIAL (node)) |
7829 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb | 7830 | } |
71dfc51f | 7831 | |
141719a8 JM |
7832 | equate_decl_number_to_die (node, parm_die); |
7833 | if (! DECL_ABSTRACT (node)) | |
a94dbf2c | 7834 | add_location_or_const_value_attribute (parm_die, node); |
71dfc51f | 7835 | |
a3f97cbb JW |
7836 | break; |
7837 | ||
a3f97cbb | 7838 | case 't': |
71dfc51f | 7839 | /* We were called with some kind of a ..._TYPE node. */ |
a3f97cbb JW |
7840 | add_type_attribute (parm_die, node, 0, 0, context_die); |
7841 | break; | |
7842 | ||
a3f97cbb JW |
7843 | default: |
7844 | abort (); | |
7845 | } | |
71dfc51f | 7846 | |
a94dbf2c | 7847 | return parm_die; |
a3f97cbb JW |
7848 | } |
7849 | ||
7850 | /* Generate a special type of DIE used as a stand-in for a trailing ellipsis | |
7851 | at the end of an (ANSI prototyped) formal parameters list. */ | |
71dfc51f | 7852 | |
a3f97cbb JW |
7853 | static void |
7854 | gen_unspecified_parameters_die (decl_or_type, context_die) | |
7855 | register tree decl_or_type; | |
7856 | register dw_die_ref context_die; | |
7857 | { | |
7858 | register dw_die_ref parm_die = new_die (DW_TAG_unspecified_parameters, | |
7859 | context_die); | |
a3f97cbb JW |
7860 | } |
7861 | ||
7862 | /* Generate a list of nameless DW_TAG_formal_parameter DIEs (and perhaps a | |
7863 | DW_TAG_unspecified_parameters DIE) to represent the types of the formal | |
7864 | parameters as specified in some function type specification (except for | |
7865 | those which appear as part of a function *definition*). | |
71dfc51f RK |
7866 | |
7867 | Note we must be careful here to output all of the parameter DIEs before* | |
a3f97cbb JW |
7868 | we output any DIEs needed to represent the types of the formal parameters. |
7869 | This keeps svr4 SDB happy because it (incorrectly) thinks that the first | |
7870 | non-parameter DIE it sees ends the formal parameter list. */ | |
71dfc51f | 7871 | |
a3f97cbb JW |
7872 | static void |
7873 | gen_formal_types_die (function_or_method_type, context_die) | |
7874 | register tree function_or_method_type; | |
7875 | register dw_die_ref context_die; | |
7876 | { | |
7877 | register tree link; | |
7878 | register tree formal_type = NULL; | |
7879 | register tree first_parm_type = TYPE_ARG_TYPES (function_or_method_type); | |
7880 | ||
bdb669cb | 7881 | #if 0 |
a3f97cbb JW |
7882 | /* In the case where we are generating a formal types list for a C++ |
7883 | non-static member function type, skip over the first thing on the | |
7884 | TYPE_ARG_TYPES list because it only represents the type of the hidden | |
7885 | `this pointer'. The debugger should be able to figure out (without | |
7886 | being explicitly told) that this non-static member function type takes a | |
7887 | `this pointer' and should be able to figure what the type of that hidden | |
7888 | parameter is from the DW_AT_member attribute of the parent | |
7889 | DW_TAG_subroutine_type DIE. */ | |
7890 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE) | |
7891 | first_parm_type = TREE_CHAIN (first_parm_type); | |
bdb669cb | 7892 | #endif |
a3f97cbb JW |
7893 | |
7894 | /* Make our first pass over the list of formal parameter types and output a | |
7895 | DW_TAG_formal_parameter DIE for each one. */ | |
7896 | for (link = first_parm_type; link; link = TREE_CHAIN (link)) | |
7897 | { | |
a94dbf2c JM |
7898 | register dw_die_ref parm_die; |
7899 | ||
a3f97cbb JW |
7900 | formal_type = TREE_VALUE (link); |
7901 | if (formal_type == void_type_node) | |
7902 | break; | |
7903 | ||
7904 | /* Output a (nameless) DIE to represent the formal parameter itself. */ | |
a94dbf2c JM |
7905 | parm_die = gen_formal_parameter_die (formal_type, context_die); |
7906 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE | |
7907 | && link == first_parm_type) | |
7908 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb JW |
7909 | } |
7910 | ||
7911 | /* If this function type has an ellipsis, add a | |
7912 | DW_TAG_unspecified_parameters DIE to the end of the parameter list. */ | |
7913 | if (formal_type != void_type_node) | |
7914 | gen_unspecified_parameters_die (function_or_method_type, context_die); | |
7915 | ||
7916 | /* Make our second (and final) pass over the list of formal parameter types | |
7917 | and output DIEs to represent those types (as necessary). */ | |
7918 | for (link = TYPE_ARG_TYPES (function_or_method_type); | |
7919 | link; | |
7920 | link = TREE_CHAIN (link)) | |
7921 | { | |
7922 | formal_type = TREE_VALUE (link); | |
7923 | if (formal_type == void_type_node) | |
7924 | break; | |
7925 | ||
b50c02f9 | 7926 | gen_type_die (formal_type, context_die); |
a3f97cbb JW |
7927 | } |
7928 | } | |
7929 | ||
7930 | /* Generate a DIE to represent a declared function (either file-scope or | |
7931 | block-local). */ | |
71dfc51f | 7932 | |
a3f97cbb JW |
7933 | static void |
7934 | gen_subprogram_die (decl, context_die) | |
7935 | register tree decl; | |
7936 | register dw_die_ref context_die; | |
7937 | { | |
7938 | char label_id[MAX_ARTIFICIAL_LABEL_BYTES]; | |
7939 | register tree origin = decl_ultimate_origin (decl); | |
4b674448 | 7940 | register dw_die_ref subr_die; |
a3f97cbb | 7941 | register dw_loc_descr_ref fp_loc = NULL; |
b1ccbc24 | 7942 | register rtx fp_reg; |
a3f97cbb JW |
7943 | register tree fn_arg_types; |
7944 | register tree outer_scope; | |
a94dbf2c | 7945 | register dw_die_ref old_die = lookup_decl_die (decl); |
9c6cd30e JM |
7946 | register int declaration |
7947 | = (current_function_decl != decl | |
7948 | || (context_die | |
7949 | && (context_die->die_tag == DW_TAG_structure_type | |
7950 | || context_die->die_tag == DW_TAG_union_type))); | |
a3f97cbb | 7951 | |
a3f97cbb JW |
7952 | if (origin != NULL) |
7953 | { | |
4b674448 | 7954 | subr_die = new_die (DW_TAG_subprogram, context_die); |
a3f97cbb JW |
7955 | add_abstract_origin_attribute (subr_die, origin); |
7956 | } | |
4401bf24 JL |
7957 | else if (old_die && DECL_ABSTRACT (decl) |
7958 | && get_AT_unsigned (old_die, DW_AT_inline)) | |
7959 | { | |
7960 | /* This must be a redefinition of an extern inline function. | |
7961 | We can just reuse the old die here. */ | |
7962 | subr_die = old_die; | |
7963 | ||
7964 | /* Clear out the inlined attribute and parm types. */ | |
7965 | remove_AT (subr_die, DW_AT_inline); | |
7966 | remove_children (subr_die); | |
7967 | } | |
bdb669cb JM |
7968 | else if (old_die) |
7969 | { | |
4b674448 JM |
7970 | register unsigned file_index |
7971 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
a94dbf2c | 7972 | |
3a88cbd1 JL |
7973 | if (get_AT_flag (old_die, DW_AT_declaration) != 1) |
7974 | abort (); | |
4b674448 JM |
7975 | |
7976 | /* If the definition comes from the same place as the declaration, | |
a94dbf2c JM |
7977 | maybe use the old DIE. We always want the DIE for this function |
7978 | that has the *_pc attributes to be under comp_unit_die so the | |
7979 | debugger can find it. For inlines, that is the concrete instance, | |
7980 | so we can use the old DIE here. For non-inline methods, we want a | |
7981 | specification DIE at toplevel, so we need a new DIE. For local | |
7982 | class methods, this does not apply. */ | |
7983 | if ((DECL_ABSTRACT (decl) || old_die->die_parent == comp_unit_die | |
7984 | || context_die == NULL) | |
7985 | && get_AT_unsigned (old_die, DW_AT_decl_file) == file_index | |
4b674448 JM |
7986 | && (get_AT_unsigned (old_die, DW_AT_decl_line) |
7987 | == DECL_SOURCE_LINE (decl))) | |
bdb669cb | 7988 | { |
4b674448 JM |
7989 | subr_die = old_die; |
7990 | ||
7991 | /* Clear out the declaration attribute and the parm types. */ | |
7992 | remove_AT (subr_die, DW_AT_declaration); | |
7993 | remove_children (subr_die); | |
7994 | } | |
7995 | else | |
7996 | { | |
7997 | subr_die = new_die (DW_TAG_subprogram, context_die); | |
7998 | add_AT_die_ref (subr_die, DW_AT_specification, old_die); | |
bdb669cb JM |
7999 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
8000 | add_AT_unsigned (subr_die, DW_AT_decl_file, file_index); | |
8001 | if (get_AT_unsigned (old_die, DW_AT_decl_line) | |
8002 | != DECL_SOURCE_LINE (decl)) | |
8003 | add_AT_unsigned | |
8004 | (subr_die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
8005 | } | |
8006 | } | |
a3f97cbb JW |
8007 | else |
8008 | { | |
4edb7b60 JM |
8009 | register dw_die_ref scope_die; |
8010 | ||
8011 | if (DECL_CONTEXT (decl)) | |
8012 | scope_die = scope_die_for (decl, context_die); | |
8013 | else | |
8014 | /* Don't put block extern declarations under comp_unit_die. */ | |
8015 | scope_die = context_die; | |
8016 | ||
8017 | subr_die = new_die (DW_TAG_subprogram, scope_die); | |
8018 | ||
273dbe67 JM |
8019 | if (TREE_PUBLIC (decl)) |
8020 | add_AT_flag (subr_die, DW_AT_external, 1); | |
71dfc51f | 8021 | |
a3f97cbb | 8022 | add_name_and_src_coords_attributes (subr_die, decl); |
4927276d JM |
8023 | if (debug_info_level > DINFO_LEVEL_TERSE) |
8024 | { | |
8025 | register tree type = TREE_TYPE (decl); | |
71dfc51f | 8026 | |
4927276d JM |
8027 | add_prototyped_attribute (subr_die, type); |
8028 | add_type_attribute (subr_die, TREE_TYPE (type), 0, 0, context_die); | |
8029 | } | |
71dfc51f | 8030 | |
a3f97cbb | 8031 | add_pure_or_virtual_attribute (subr_die, decl); |
273dbe67 JM |
8032 | if (DECL_ARTIFICIAL (decl)) |
8033 | add_AT_flag (subr_die, DW_AT_artificial, 1); | |
a94dbf2c JM |
8034 | if (TREE_PROTECTED (decl)) |
8035 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_protected); | |
8036 | else if (TREE_PRIVATE (decl)) | |
8037 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 8038 | } |
4edb7b60 | 8039 | |
a94dbf2c JM |
8040 | if (declaration) |
8041 | { | |
8042 | add_AT_flag (subr_die, DW_AT_declaration, 1); | |
8043 | ||
8044 | /* The first time we see a member function, it is in the context of | |
8045 | the class to which it belongs. We make sure of this by emitting | |
8046 | the class first. The next time is the definition, which is | |
8047 | handled above. The two may come from the same source text. */ | |
f6c74b02 | 8048 | if (DECL_CONTEXT (decl)) |
a94dbf2c JM |
8049 | equate_decl_number_to_die (decl, subr_die); |
8050 | } | |
8051 | else if (DECL_ABSTRACT (decl)) | |
a3f97cbb | 8052 | { |
4401bf24 JL |
8053 | /* ??? Checking DECL_DEFER_OUTPUT is correct for static inline functions, |
8054 | but not for extern inline functions. We can't get this completely | |
8055 | correct because information about whether the function was declared | |
8056 | inline is not saved anywhere. */ | |
61b32c02 JM |
8057 | if (DECL_DEFER_OUTPUT (decl)) |
8058 | { | |
8059 | if (DECL_INLINE (decl)) | |
8060 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_inlined); | |
8061 | else | |
8062 | add_AT_unsigned (subr_die, DW_AT_inline, | |
8063 | DW_INL_declared_not_inlined); | |
8064 | } | |
8065 | else if (DECL_INLINE (decl)) | |
8066 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_inlined); | |
8067 | else | |
8068 | abort (); | |
8069 | ||
a3f97cbb JW |
8070 | equate_decl_number_to_die (decl, subr_die); |
8071 | } | |
8072 | else if (!DECL_EXTERNAL (decl)) | |
8073 | { | |
71dfc51f | 8074 | if (origin == NULL_TREE) |
ba7b35df | 8075 | equate_decl_number_to_die (decl, subr_die); |
71dfc51f | 8076 | |
5c90448c JM |
8077 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_BEGIN_LABEL, |
8078 | current_funcdef_number); | |
7d4440be | 8079 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label_id); |
5c90448c JM |
8080 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_END_LABEL, |
8081 | current_funcdef_number); | |
a3f97cbb JW |
8082 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label_id); |
8083 | ||
d291dd49 JM |
8084 | add_pubname (decl, subr_die); |
8085 | add_arange (decl, subr_die); | |
8086 | ||
a3f97cbb | 8087 | #ifdef MIPS_DEBUGGING_INFO |
a3f97cbb JW |
8088 | /* Add a reference to the FDE for this routine. */ |
8089 | add_AT_fde_ref (subr_die, DW_AT_MIPS_fde, current_funcdef_fde); | |
8090 | #endif | |
8091 | ||
810429b7 JM |
8092 | /* Define the "frame base" location for this routine. We use the |
8093 | frame pointer or stack pointer registers, since the RTL for local | |
8094 | variables is relative to one of them. */ | |
b1ccbc24 RK |
8095 | fp_reg |
8096 | = frame_pointer_needed ? hard_frame_pointer_rtx : stack_pointer_rtx; | |
8097 | add_AT_loc (subr_die, DW_AT_frame_base, reg_loc_descriptor (fp_reg)); | |
a3f97cbb | 8098 | |
ef76d03b JW |
8099 | #if 0 |
8100 | /* ??? This fails for nested inline functions, because context_display | |
8101 | is not part of the state saved/restored for inline functions. */ | |
88dad228 | 8102 | if (current_function_needs_context) |
ef76d03b JW |
8103 | add_AT_location_description (subr_die, DW_AT_static_link, |
8104 | lookup_static_chain (decl)); | |
8105 | #endif | |
a3f97cbb JW |
8106 | } |
8107 | ||
8108 | /* Now output descriptions of the arguments for this function. This gets | |
8109 | (unnecessarily?) complex because of the fact that the DECL_ARGUMENT list | |
8110 | for a FUNCTION_DECL doesn't indicate cases where there was a trailing | |
8111 | `...' at the end of the formal parameter list. In order to find out if | |
8112 | there was a trailing ellipsis or not, we must instead look at the type | |
8113 | associated with the FUNCTION_DECL. This will be a node of type | |
8114 | FUNCTION_TYPE. If the chain of type nodes hanging off of this | |
8115 | FUNCTION_TYPE node ends with a void_type_node then there should *not* be | |
8116 | an ellipsis at the end. */ | |
ab72d377 | 8117 | push_decl_scope (decl); |
71dfc51f | 8118 | |
a3f97cbb JW |
8119 | /* In the case where we are describing a mere function declaration, all we |
8120 | need to do here (and all we *can* do here) is to describe the *types* of | |
8121 | its formal parameters. */ | |
4927276d | 8122 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
71dfc51f | 8123 | ; |
4edb7b60 JM |
8124 | else if (declaration) |
8125 | gen_formal_types_die (TREE_TYPE (decl), subr_die); | |
a3f97cbb JW |
8126 | else |
8127 | { | |
8128 | /* Generate DIEs to represent all known formal parameters */ | |
8129 | register tree arg_decls = DECL_ARGUMENTS (decl); | |
8130 | register tree parm; | |
8131 | ||
8132 | /* When generating DIEs, generate the unspecified_parameters DIE | |
8133 | instead if we come across the arg "__builtin_va_alist" */ | |
8134 | for (parm = arg_decls; parm; parm = TREE_CHAIN (parm)) | |
71dfc51f RK |
8135 | if (TREE_CODE (parm) == PARM_DECL) |
8136 | { | |
db3cf6fb MS |
8137 | if (DECL_NAME (parm) |
8138 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
8139 | "__builtin_va_alist")) | |
71dfc51f RK |
8140 | gen_unspecified_parameters_die (parm, subr_die); |
8141 | else | |
8142 | gen_decl_die (parm, subr_die); | |
8143 | } | |
a3f97cbb JW |
8144 | |
8145 | /* Decide whether we need a unspecified_parameters DIE at the end. | |
8146 | There are 2 more cases to do this for: 1) the ansi ... declaration - | |
8147 | this is detectable when the end of the arg list is not a | |
8148 | void_type_node 2) an unprototyped function declaration (not a | |
8149 | definition). This just means that we have no info about the | |
8150 | parameters at all. */ | |
8151 | fn_arg_types = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
71dfc51f | 8152 | if (fn_arg_types != NULL) |
a3f97cbb JW |
8153 | { |
8154 | /* this is the prototyped case, check for ... */ | |
8155 | if (TREE_VALUE (tree_last (fn_arg_types)) != void_type_node) | |
71dfc51f | 8156 | gen_unspecified_parameters_die (decl, subr_die); |
a3f97cbb | 8157 | } |
71dfc51f RK |
8158 | else if (DECL_INITIAL (decl) == NULL_TREE) |
8159 | gen_unspecified_parameters_die (decl, subr_die); | |
a3f97cbb JW |
8160 | } |
8161 | ||
8162 | /* Output Dwarf info for all of the stuff within the body of the function | |
8163 | (if it has one - it may be just a declaration). */ | |
8164 | outer_scope = DECL_INITIAL (decl); | |
8165 | ||
d7248bff JM |
8166 | /* Note that here, `outer_scope' is a pointer to the outermost BLOCK |
8167 | node created to represent a function. This outermost BLOCK actually | |
8168 | represents the outermost binding contour for the function, i.e. the | |
8169 | contour in which the function's formal parameters and labels get | |
8170 | declared. Curiously, it appears that the front end doesn't actually | |
8171 | put the PARM_DECL nodes for the current function onto the BLOCK_VARS | |
8172 | list for this outer scope. (They are strung off of the DECL_ARGUMENTS | |
8173 | list for the function instead.) The BLOCK_VARS list for the | |
8174 | `outer_scope' does provide us with a list of the LABEL_DECL nodes for | |
8175 | the function however, and we output DWARF info for those in | |
8176 | decls_for_scope. Just within the `outer_scope' there will be a BLOCK | |
8177 | node representing the function's outermost pair of curly braces, and | |
8178 | any blocks used for the base and member initializers of a C++ | |
8179 | constructor function. */ | |
4edb7b60 | 8180 | if (! declaration && TREE_CODE (outer_scope) != ERROR_MARK) |
7e23cb16 JM |
8181 | { |
8182 | current_function_has_inlines = 0; | |
8183 | decls_for_scope (outer_scope, subr_die, 0); | |
71dfc51f | 8184 | |
ce61cc73 | 8185 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
7e23cb16 JM |
8186 | if (current_function_has_inlines) |
8187 | { | |
8188 | add_AT_flag (subr_die, DW_AT_MIPS_has_inlines, 1); | |
8189 | if (! comp_unit_has_inlines) | |
8190 | { | |
8191 | add_AT_flag (comp_unit_die, DW_AT_MIPS_has_inlines, 1); | |
8192 | comp_unit_has_inlines = 1; | |
8193 | } | |
8194 | } | |
8195 | #endif | |
8196 | } | |
71dfc51f | 8197 | |
ab72d377 | 8198 | pop_decl_scope (); |
a3f97cbb JW |
8199 | } |
8200 | ||
8201 | /* Generate a DIE to represent a declared data object. */ | |
71dfc51f | 8202 | |
a3f97cbb JW |
8203 | static void |
8204 | gen_variable_die (decl, context_die) | |
8205 | register tree decl; | |
8206 | register dw_die_ref context_die; | |
8207 | { | |
8208 | register tree origin = decl_ultimate_origin (decl); | |
8209 | register dw_die_ref var_die = new_die (DW_TAG_variable, context_die); | |
71dfc51f | 8210 | |
bdb669cb | 8211 | dw_die_ref old_die = lookup_decl_die (decl); |
4edb7b60 JM |
8212 | int declaration |
8213 | = (DECL_EXTERNAL (decl) | |
a94dbf2c JM |
8214 | || current_function_decl != decl_function_context (decl) |
8215 | || context_die->die_tag == DW_TAG_structure_type | |
8216 | || context_die->die_tag == DW_TAG_union_type); | |
4edb7b60 | 8217 | |
a3f97cbb | 8218 | if (origin != NULL) |
71dfc51f | 8219 | add_abstract_origin_attribute (var_die, origin); |
f76b8156 JW |
8220 | /* Loop unrolling can create multiple blocks that refer to the same |
8221 | static variable, so we must test for the DW_AT_declaration flag. */ | |
8222 | /* ??? Loop unrolling/reorder_blocks should perhaps be rewritten to | |
8223 | copy decls and set the DECL_ABSTRACT flag on them instead of | |
8224 | sharing them. */ | |
8225 | else if (old_die && TREE_STATIC (decl) | |
8226 | && get_AT_flag (old_die, DW_AT_declaration) == 1) | |
bdb669cb | 8227 | { |
f76b8156 | 8228 | /* ??? This is an instantiation of a C++ class level static. */ |
bdb669cb JM |
8229 | add_AT_die_ref (var_die, DW_AT_specification, old_die); |
8230 | if (DECL_NAME (decl)) | |
8231 | { | |
8232 | register unsigned file_index | |
8233 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 8234 | |
bdb669cb JM |
8235 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
8236 | add_AT_unsigned (var_die, DW_AT_decl_file, file_index); | |
71dfc51f | 8237 | |
bdb669cb JM |
8238 | if (get_AT_unsigned (old_die, DW_AT_decl_line) |
8239 | != DECL_SOURCE_LINE (decl)) | |
71dfc51f RK |
8240 | |
8241 | add_AT_unsigned (var_die, DW_AT_decl_line, | |
8242 | DECL_SOURCE_LINE (decl)); | |
bdb669cb JM |
8243 | } |
8244 | } | |
a3f97cbb JW |
8245 | else |
8246 | { | |
8247 | add_name_and_src_coords_attributes (var_die, decl); | |
a3f97cbb JW |
8248 | add_type_attribute (var_die, TREE_TYPE (decl), |
8249 | TREE_READONLY (decl), | |
8250 | TREE_THIS_VOLATILE (decl), context_die); | |
71dfc51f | 8251 | |
273dbe67 JM |
8252 | if (TREE_PUBLIC (decl)) |
8253 | add_AT_flag (var_die, DW_AT_external, 1); | |
71dfc51f | 8254 | |
273dbe67 JM |
8255 | if (DECL_ARTIFICIAL (decl)) |
8256 | add_AT_flag (var_die, DW_AT_artificial, 1); | |
71dfc51f | 8257 | |
a94dbf2c JM |
8258 | if (TREE_PROTECTED (decl)) |
8259 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 8260 | |
a94dbf2c JM |
8261 | else if (TREE_PRIVATE (decl)) |
8262 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 8263 | } |
4edb7b60 JM |
8264 | |
8265 | if (declaration) | |
8266 | add_AT_flag (var_die, DW_AT_declaration, 1); | |
8267 | ||
8268 | if ((declaration && decl_class_context (decl)) || DECL_ABSTRACT (decl)) | |
8269 | equate_decl_number_to_die (decl, var_die); | |
8270 | ||
8271 | if (! declaration && ! DECL_ABSTRACT (decl)) | |
a3f97cbb | 8272 | { |
141719a8 | 8273 | equate_decl_number_to_die (decl, var_die); |
a3f97cbb | 8274 | add_location_or_const_value_attribute (var_die, decl); |
d291dd49 | 8275 | add_pubname (decl, var_die); |
a3f97cbb JW |
8276 | } |
8277 | } | |
8278 | ||
8279 | /* Generate a DIE to represent a label identifier. */ | |
71dfc51f | 8280 | |
a3f97cbb JW |
8281 | static void |
8282 | gen_label_die (decl, context_die) | |
8283 | register tree decl; | |
8284 | register dw_die_ref context_die; | |
8285 | { | |
8286 | register tree origin = decl_ultimate_origin (decl); | |
8287 | register dw_die_ref lbl_die = new_die (DW_TAG_label, context_die); | |
8288 | register rtx insn; | |
8289 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
5c90448c | 8290 | char label2[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 8291 | |
a3f97cbb | 8292 | if (origin != NULL) |
71dfc51f | 8293 | add_abstract_origin_attribute (lbl_die, origin); |
a3f97cbb | 8294 | else |
71dfc51f RK |
8295 | add_name_and_src_coords_attributes (lbl_die, decl); |
8296 | ||
a3f97cbb | 8297 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 8298 | equate_decl_number_to_die (decl, lbl_die); |
a3f97cbb JW |
8299 | else |
8300 | { | |
8301 | insn = DECL_RTL (decl); | |
8302 | if (GET_CODE (insn) == CODE_LABEL) | |
8303 | { | |
8304 | /* When optimization is enabled (via -O) some parts of the compiler | |
8305 | (e.g. jump.c and cse.c) may try to delete CODE_LABEL insns which | |
8306 | represent source-level labels which were explicitly declared by | |
8307 | the user. This really shouldn't be happening though, so catch | |
8308 | it if it ever does happen. */ | |
8309 | if (INSN_DELETED_P (insn)) | |
71dfc51f RK |
8310 | abort (); |
8311 | ||
5c90448c JM |
8312 | sprintf (label2, INSN_LABEL_FMT, current_funcdef_number); |
8313 | ASM_GENERATE_INTERNAL_LABEL (label, label2, | |
8314 | (unsigned) INSN_UID (insn)); | |
a3f97cbb JW |
8315 | add_AT_lbl_id (lbl_die, DW_AT_low_pc, label); |
8316 | } | |
8317 | } | |
8318 | } | |
8319 | ||
8320 | /* Generate a DIE for a lexical block. */ | |
71dfc51f | 8321 | |
a3f97cbb | 8322 | static void |
d7248bff | 8323 | gen_lexical_block_die (stmt, context_die, depth) |
a3f97cbb JW |
8324 | register tree stmt; |
8325 | register dw_die_ref context_die; | |
d7248bff | 8326 | int depth; |
a3f97cbb JW |
8327 | { |
8328 | register dw_die_ref stmt_die = new_die (DW_TAG_lexical_block, context_die); | |
8329 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f RK |
8330 | |
8331 | if (! BLOCK_ABSTRACT (stmt)) | |
a3f97cbb | 8332 | { |
5c90448c JM |
8333 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
8334 | next_block_number); | |
a3f97cbb | 8335 | add_AT_lbl_id (stmt_die, DW_AT_low_pc, label); |
5c90448c | 8336 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
a3f97cbb JW |
8337 | add_AT_lbl_id (stmt_die, DW_AT_high_pc, label); |
8338 | } | |
71dfc51f | 8339 | |
7d4440be | 8340 | push_decl_scope (stmt); |
d7248bff | 8341 | decls_for_scope (stmt, stmt_die, depth); |
7d4440be | 8342 | pop_decl_scope (); |
a3f97cbb JW |
8343 | } |
8344 | ||
8345 | /* Generate a DIE for an inlined subprogram. */ | |
71dfc51f | 8346 | |
a3f97cbb | 8347 | static void |
d7248bff | 8348 | gen_inlined_subroutine_die (stmt, context_die, depth) |
a3f97cbb JW |
8349 | register tree stmt; |
8350 | register dw_die_ref context_die; | |
d7248bff | 8351 | int depth; |
a3f97cbb | 8352 | { |
71dfc51f | 8353 | if (! BLOCK_ABSTRACT (stmt)) |
a3f97cbb | 8354 | { |
71dfc51f RK |
8355 | register dw_die_ref subr_die |
8356 | = new_die (DW_TAG_inlined_subroutine, context_die); | |
ab72d377 | 8357 | register tree decl = block_ultimate_origin (stmt); |
d7248bff | 8358 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 8359 | |
ab72d377 | 8360 | add_abstract_origin_attribute (subr_die, decl); |
5c90448c JM |
8361 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
8362 | next_block_number); | |
a3f97cbb | 8363 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label); |
5c90448c | 8364 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
a3f97cbb | 8365 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label); |
ab72d377 | 8366 | push_decl_scope (decl); |
d7248bff | 8367 | decls_for_scope (stmt, subr_die, depth); |
ab72d377 | 8368 | pop_decl_scope (); |
7e23cb16 | 8369 | current_function_has_inlines = 1; |
a3f97cbb | 8370 | } |
a3f97cbb JW |
8371 | } |
8372 | ||
8373 | /* Generate a DIE for a field in a record, or structure. */ | |
71dfc51f | 8374 | |
a3f97cbb JW |
8375 | static void |
8376 | gen_field_die (decl, context_die) | |
8377 | register tree decl; | |
8378 | register dw_die_ref context_die; | |
8379 | { | |
8380 | register dw_die_ref decl_die = new_die (DW_TAG_member, context_die); | |
71dfc51f | 8381 | |
a3f97cbb | 8382 | add_name_and_src_coords_attributes (decl_die, decl); |
a3f97cbb JW |
8383 | add_type_attribute (decl_die, member_declared_type (decl), |
8384 | TREE_READONLY (decl), TREE_THIS_VOLATILE (decl), | |
8385 | context_die); | |
71dfc51f | 8386 | |
a3f97cbb JW |
8387 | /* If this is a bit field... */ |
8388 | if (DECL_BIT_FIELD_TYPE (decl)) | |
8389 | { | |
8390 | add_byte_size_attribute (decl_die, decl); | |
8391 | add_bit_size_attribute (decl_die, decl); | |
8392 | add_bit_offset_attribute (decl_die, decl); | |
8393 | } | |
71dfc51f | 8394 | |
a94dbf2c JM |
8395 | if (TREE_CODE (DECL_FIELD_CONTEXT (decl)) != UNION_TYPE) |
8396 | add_data_member_location_attribute (decl_die, decl); | |
71dfc51f | 8397 | |
273dbe67 JM |
8398 | if (DECL_ARTIFICIAL (decl)) |
8399 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
71dfc51f | 8400 | |
a94dbf2c JM |
8401 | if (TREE_PROTECTED (decl)) |
8402 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 8403 | |
a94dbf2c JM |
8404 | else if (TREE_PRIVATE (decl)) |
8405 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb JW |
8406 | } |
8407 | ||
ab72d377 JM |
8408 | #if 0 |
8409 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. | |
8410 | Use modified_type_die instead. | |
a3f97cbb JW |
8411 | We keep this code here just in case these types of DIEs may be needed to |
8412 | represent certain things in other languages (e.g. Pascal) someday. */ | |
8413 | static void | |
8414 | gen_pointer_type_die (type, context_die) | |
8415 | register tree type; | |
8416 | register dw_die_ref context_die; | |
8417 | { | |
71dfc51f RK |
8418 | register dw_die_ref ptr_die |
8419 | = new_die (DW_TAG_pointer_type, scope_die_for (type, context_die)); | |
8420 | ||
a3f97cbb | 8421 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 8422 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 8423 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb JW |
8424 | } |
8425 | ||
ab72d377 JM |
8426 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. |
8427 | Use modified_type_die instead. | |
a3f97cbb JW |
8428 | We keep this code here just in case these types of DIEs may be needed to |
8429 | represent certain things in other languages (e.g. Pascal) someday. */ | |
8430 | static void | |
8431 | gen_reference_type_die (type, context_die) | |
8432 | register tree type; | |
8433 | register dw_die_ref context_die; | |
8434 | { | |
71dfc51f RK |
8435 | register dw_die_ref ref_die |
8436 | = new_die (DW_TAG_reference_type, scope_die_for (type, context_die)); | |
8437 | ||
a3f97cbb | 8438 | equate_type_number_to_die (type, ref_die); |
a3f97cbb | 8439 | add_type_attribute (ref_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 8440 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb | 8441 | } |
ab72d377 | 8442 | #endif |
a3f97cbb JW |
8443 | |
8444 | /* Generate a DIE for a pointer to a member type. */ | |
8445 | static void | |
8446 | gen_ptr_to_mbr_type_die (type, context_die) | |
8447 | register tree type; | |
8448 | register dw_die_ref context_die; | |
8449 | { | |
71dfc51f RK |
8450 | register dw_die_ref ptr_die |
8451 | = new_die (DW_TAG_ptr_to_member_type, scope_die_for (type, context_die)); | |
8452 | ||
a3f97cbb | 8453 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 8454 | add_AT_die_ref (ptr_die, DW_AT_containing_type, |
bdb669cb | 8455 | lookup_type_die (TYPE_OFFSET_BASETYPE (type))); |
a3f97cbb JW |
8456 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
8457 | } | |
8458 | ||
8459 | /* Generate the DIE for the compilation unit. */ | |
71dfc51f | 8460 | |
a3f97cbb JW |
8461 | static void |
8462 | gen_compile_unit_die (main_input_filename) | |
8463 | register char *main_input_filename; | |
8464 | { | |
8465 | char producer[250]; | |
a3f97cbb JW |
8466 | char *wd = getpwd (); |
8467 | ||
8468 | comp_unit_die = new_die (DW_TAG_compile_unit, NULL); | |
bdb669cb JM |
8469 | add_name_attribute (comp_unit_die, main_input_filename); |
8470 | ||
71dfc51f RK |
8471 | if (wd != NULL) |
8472 | add_AT_string (comp_unit_die, DW_AT_comp_dir, wd); | |
a3f97cbb JW |
8473 | |
8474 | sprintf (producer, "%s %s", language_string, version_string); | |
8475 | ||
8476 | #ifdef MIPS_DEBUGGING_INFO | |
8477 | /* The MIPS/SGI compilers place the 'cc' command line options in the producer | |
8478 | string. The SGI debugger looks for -g, -g1, -g2, or -g3; if they do | |
8479 | not appear in the producer string, the debugger reaches the conclusion | |
8480 | that the object file is stripped and has no debugging information. | |
8481 | To get the MIPS/SGI debugger to believe that there is debugging | |
8482 | information in the object file, we add a -g to the producer string. */ | |
4927276d JM |
8483 | if (debug_info_level > DINFO_LEVEL_TERSE) |
8484 | strcat (producer, " -g"); | |
a3f97cbb JW |
8485 | #endif |
8486 | ||
8487 | add_AT_string (comp_unit_die, DW_AT_producer, producer); | |
a9d38797 | 8488 | |
a3f97cbb | 8489 | if (strcmp (language_string, "GNU C++") == 0) |
a9d38797 | 8490 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C_plus_plus); |
71dfc51f | 8491 | |
a3f97cbb | 8492 | else if (strcmp (language_string, "GNU Ada") == 0) |
a9d38797 | 8493 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Ada83); |
71dfc51f | 8494 | |
a9d38797 JM |
8495 | else if (strcmp (language_string, "GNU F77") == 0) |
8496 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Fortran77); | |
71dfc51f | 8497 | |
bc28c45b RK |
8498 | else if (strcmp (language_string, "GNU Pascal") == 0) |
8499 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Pascal83); | |
8500 | ||
a3f97cbb | 8501 | else if (flag_traditional) |
a9d38797 | 8502 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C); |
71dfc51f | 8503 | |
a3f97cbb | 8504 | else |
a9d38797 JM |
8505 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C89); |
8506 | ||
8507 | #if 0 /* unimplemented */ | |
e90b62db | 8508 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
a9d38797 JM |
8509 | add_AT_unsigned (comp_unit_die, DW_AT_macro_info, 0); |
8510 | #endif | |
a3f97cbb JW |
8511 | } |
8512 | ||
8513 | /* Generate a DIE for a string type. */ | |
71dfc51f | 8514 | |
a3f97cbb JW |
8515 | static void |
8516 | gen_string_type_die (type, context_die) | |
8517 | register tree type; | |
8518 | register dw_die_ref context_die; | |
8519 | { | |
71dfc51f RK |
8520 | register dw_die_ref type_die |
8521 | = new_die (DW_TAG_string_type, scope_die_for (type, context_die)); | |
8522 | ||
bdb669cb | 8523 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
8524 | |
8525 | /* Fudge the string length attribute for now. */ | |
71dfc51f | 8526 | |
a3f97cbb | 8527 | /* TODO: add string length info. |
71dfc51f | 8528 | string_length_attribute (TYPE_MAX_VALUE (TYPE_DOMAIN (type))); |
a3f97cbb JW |
8529 | bound_representation (upper_bound, 0, 'u'); */ |
8530 | } | |
8531 | ||
61b32c02 | 8532 | /* Generate the DIE for a base class. */ |
71dfc51f | 8533 | |
61b32c02 JM |
8534 | static void |
8535 | gen_inheritance_die (binfo, context_die) | |
8536 | register tree binfo; | |
8537 | register dw_die_ref context_die; | |
8538 | { | |
8539 | dw_die_ref die = new_die (DW_TAG_inheritance, context_die); | |
71dfc51f | 8540 | |
61b32c02 JM |
8541 | add_type_attribute (die, BINFO_TYPE (binfo), 0, 0, context_die); |
8542 | add_data_member_location_attribute (die, binfo); | |
71dfc51f | 8543 | |
61b32c02 JM |
8544 | if (TREE_VIA_VIRTUAL (binfo)) |
8545 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); | |
8546 | if (TREE_VIA_PUBLIC (binfo)) | |
8547 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_public); | |
8548 | else if (TREE_VIA_PROTECTED (binfo)) | |
8549 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_protected); | |
8550 | } | |
8551 | ||
a3f97cbb | 8552 | /* Genearate a DIE for a class member. */ |
71dfc51f | 8553 | |
a3f97cbb JW |
8554 | static void |
8555 | gen_member_die (type, context_die) | |
8556 | register tree type; | |
8557 | register dw_die_ref context_die; | |
8558 | { | |
61b32c02 | 8559 | register tree member; |
71dfc51f | 8560 | |
a3f97cbb JW |
8561 | /* If this is not an incomplete type, output descriptions of each of its |
8562 | members. Note that as we output the DIEs necessary to represent the | |
8563 | members of this record or union type, we will also be trying to output | |
8564 | DIEs to represent the *types* of those members. However the `type' | |
8565 | function (above) will specifically avoid generating type DIEs for member | |
8566 | types *within* the list of member DIEs for this (containing) type execpt | |
8567 | for those types (of members) which are explicitly marked as also being | |
8568 | members of this (containing) type themselves. The g++ front- end can | |
8569 | force any given type to be treated as a member of some other | |
8570 | (containing) type by setting the TYPE_CONTEXT of the given (member) type | |
8571 | to point to the TREE node representing the appropriate (containing) | |
8572 | type. */ | |
8573 | ||
61b32c02 JM |
8574 | /* First output info about the base classes. */ |
8575 | if (TYPE_BINFO (type) && TYPE_BINFO_BASETYPES (type)) | |
a3f97cbb | 8576 | { |
61b32c02 JM |
8577 | register tree bases = TYPE_BINFO_BASETYPES (type); |
8578 | register int n_bases = TREE_VEC_LENGTH (bases); | |
8579 | register int i; | |
8580 | ||
8581 | for (i = 0; i < n_bases; i++) | |
8582 | gen_inheritance_die (TREE_VEC_ELT (bases, i), context_die); | |
a3f97cbb JW |
8583 | } |
8584 | ||
61b32c02 JM |
8585 | /* Now output info about the data members and type members. */ |
8586 | for (member = TYPE_FIELDS (type); member; member = TREE_CHAIN (member)) | |
8587 | gen_decl_die (member, context_die); | |
8588 | ||
a3f97cbb | 8589 | /* Now output info about the function members (if any). */ |
61b32c02 JM |
8590 | for (member = TYPE_METHODS (type); member; member = TREE_CHAIN (member)) |
8591 | gen_decl_die (member, context_die); | |
a3f97cbb JW |
8592 | } |
8593 | ||
8594 | /* Generate a DIE for a structure or union type. */ | |
71dfc51f | 8595 | |
a3f97cbb | 8596 | static void |
273dbe67 | 8597 | gen_struct_or_union_type_die (type, context_die) |
a3f97cbb | 8598 | register tree type; |
a3f97cbb JW |
8599 | register dw_die_ref context_die; |
8600 | { | |
273dbe67 | 8601 | register dw_die_ref type_die = lookup_type_die (type); |
a082c85a JM |
8602 | register dw_die_ref scope_die = 0; |
8603 | register int nested = 0; | |
273dbe67 JM |
8604 | |
8605 | if (type_die && ! TYPE_SIZE (type)) | |
8606 | return; | |
a082c85a | 8607 | |
71dfc51f | 8608 | if (TYPE_CONTEXT (type) != NULL_TREE |
a082c85a JM |
8609 | && TREE_CODE_CLASS (TREE_CODE (TYPE_CONTEXT (type))) == 't') |
8610 | nested = 1; | |
8611 | ||
a94dbf2c | 8612 | scope_die = scope_die_for (type, context_die); |
a082c85a JM |
8613 | |
8614 | if (! type_die || (nested && scope_die == comp_unit_die)) | |
273dbe67 | 8615 | /* First occurrence of type or toplevel definition of nested class. */ |
a3f97cbb | 8616 | { |
273dbe67 | 8617 | register dw_die_ref old_die = type_die; |
71dfc51f | 8618 | |
a3f97cbb JW |
8619 | type_die = new_die (TREE_CODE (type) == RECORD_TYPE |
8620 | ? DW_TAG_structure_type : DW_TAG_union_type, | |
a082c85a | 8621 | scope_die); |
a3f97cbb JW |
8622 | equate_type_number_to_die (type, type_die); |
8623 | add_name_attribute (type_die, type_tag (type)); | |
273dbe67 JM |
8624 | if (old_die) |
8625 | add_AT_die_ref (type_die, DW_AT_specification, old_die); | |
a3f97cbb | 8626 | } |
4b674448 | 8627 | else |
273dbe67 | 8628 | remove_AT (type_die, DW_AT_declaration); |
a3f97cbb | 8629 | |
a94dbf2c JM |
8630 | /* If we're not in the right context to be defining this type, defer to |
8631 | avoid tricky recursion. */ | |
8632 | if (TYPE_SIZE (type) && decl_scope_depth > 0 && scope_die == comp_unit_die) | |
8633 | { | |
8634 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
8635 | pend_type (type); | |
8636 | } | |
a3f97cbb JW |
8637 | /* If this type has been completed, then give it a byte_size attribute and |
8638 | then give a list of members. */ | |
a94dbf2c | 8639 | else if (TYPE_SIZE (type)) |
a3f97cbb JW |
8640 | { |
8641 | /* Prevent infinite recursion in cases where the type of some member of | |
8642 | this type is expressed in terms of this type itself. */ | |
8643 | TREE_ASM_WRITTEN (type) = 1; | |
273dbe67 | 8644 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 8645 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 8646 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 8647 | |
ef76d03b JW |
8648 | /* If the first reference to this type was as the return type of an |
8649 | inline function, then it may not have a parent. Fix this now. */ | |
8650 | if (type_die->die_parent == NULL) | |
8651 | add_child_die (scope_die, type_die); | |
8652 | ||
273dbe67 JM |
8653 | push_decl_scope (type); |
8654 | gen_member_die (type, type_die); | |
8655 | pop_decl_scope (); | |
71dfc51f | 8656 | |
a94dbf2c JM |
8657 | /* GNU extension: Record what type our vtable lives in. */ |
8658 | if (TYPE_VFIELD (type)) | |
8659 | { | |
8660 | tree vtype = DECL_FCONTEXT (TYPE_VFIELD (type)); | |
71dfc51f | 8661 | |
a94dbf2c JM |
8662 | gen_type_die (vtype, context_die); |
8663 | add_AT_die_ref (type_die, DW_AT_containing_type, | |
8664 | lookup_type_die (vtype)); | |
8665 | } | |
a3f97cbb | 8666 | } |
4b674448 JM |
8667 | else |
8668 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
8669 | } |
8670 | ||
8671 | /* Generate a DIE for a subroutine _type_. */ | |
71dfc51f | 8672 | |
a3f97cbb JW |
8673 | static void |
8674 | gen_subroutine_type_die (type, context_die) | |
8675 | register tree type; | |
8676 | register dw_die_ref context_die; | |
8677 | { | |
8678 | register tree return_type = TREE_TYPE (type); | |
71dfc51f RK |
8679 | register dw_die_ref subr_die |
8680 | = new_die (DW_TAG_subroutine_type, scope_die_for (type, context_die)); | |
8681 | ||
a3f97cbb JW |
8682 | equate_type_number_to_die (type, subr_die); |
8683 | add_prototyped_attribute (subr_die, type); | |
a3f97cbb | 8684 | add_type_attribute (subr_die, return_type, 0, 0, context_die); |
a94dbf2c | 8685 | gen_formal_types_die (type, subr_die); |
a3f97cbb JW |
8686 | } |
8687 | ||
8688 | /* Generate a DIE for a type definition */ | |
71dfc51f | 8689 | |
a3f97cbb JW |
8690 | static void |
8691 | gen_typedef_die (decl, context_die) | |
8692 | register tree decl; | |
8693 | register dw_die_ref context_die; | |
8694 | { | |
a3f97cbb | 8695 | register dw_die_ref type_die; |
a94dbf2c JM |
8696 | register tree origin; |
8697 | ||
8698 | if (TREE_ASM_WRITTEN (decl)) | |
8699 | return; | |
8700 | TREE_ASM_WRITTEN (decl) = 1; | |
8701 | ||
ab72d377 | 8702 | type_die = new_die (DW_TAG_typedef, scope_die_for (decl, context_die)); |
a94dbf2c | 8703 | origin = decl_ultimate_origin (decl); |
a3f97cbb | 8704 | if (origin != NULL) |
a94dbf2c | 8705 | add_abstract_origin_attribute (type_die, origin); |
a3f97cbb JW |
8706 | else |
8707 | { | |
a94dbf2c | 8708 | register tree type; |
a3f97cbb | 8709 | add_name_and_src_coords_attributes (type_die, decl); |
a94dbf2c JM |
8710 | if (DECL_ORIGINAL_TYPE (decl)) |
8711 | { | |
8712 | type = DECL_ORIGINAL_TYPE (decl); | |
8713 | equate_type_number_to_die (TREE_TYPE (decl), type_die); | |
8714 | } | |
8715 | else | |
8716 | type = TREE_TYPE (decl); | |
8717 | add_type_attribute (type_die, type, TREE_READONLY (decl), | |
8718 | TREE_THIS_VOLATILE (decl), context_die); | |
a3f97cbb | 8719 | } |
71dfc51f | 8720 | |
a3f97cbb | 8721 | if (DECL_ABSTRACT (decl)) |
a94dbf2c | 8722 | equate_decl_number_to_die (decl, type_die); |
a3f97cbb JW |
8723 | } |
8724 | ||
8725 | /* Generate a type description DIE. */ | |
71dfc51f | 8726 | |
a3f97cbb JW |
8727 | static void |
8728 | gen_type_die (type, context_die) | |
8729 | register tree type; | |
8730 | register dw_die_ref context_die; | |
8731 | { | |
71dfc51f RK |
8732 | if (type == NULL_TREE || type == error_mark_node) |
8733 | return; | |
a3f97cbb JW |
8734 | |
8735 | /* We are going to output a DIE to represent the unqualified version of of | |
8736 | this type (i.e. without any const or volatile qualifiers) so get the | |
8737 | main variant (i.e. the unqualified version) of this type now. */ | |
8738 | type = type_main_variant (type); | |
8739 | ||
8740 | if (TREE_ASM_WRITTEN (type)) | |
71dfc51f | 8741 | return; |
a3f97cbb | 8742 | |
a94dbf2c JM |
8743 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
8744 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
8745 | { | |
8746 | TREE_ASM_WRITTEN (type) = 1; | |
8747 | gen_decl_die (TYPE_NAME (type), context_die); | |
8748 | return; | |
8749 | } | |
8750 | ||
a3f97cbb JW |
8751 | switch (TREE_CODE (type)) |
8752 | { | |
8753 | case ERROR_MARK: | |
8754 | break; | |
8755 | ||
8756 | case POINTER_TYPE: | |
8757 | case REFERENCE_TYPE: | |
8758 | /* For these types, all that is required is that we output a DIE (or a | |
8759 | set of DIEs) to represent the "basis" type. */ | |
8760 | gen_type_die (TREE_TYPE (type), context_die); | |
8761 | break; | |
8762 | ||
8763 | case OFFSET_TYPE: | |
71dfc51f RK |
8764 | /* This code is used for C++ pointer-to-data-member types. |
8765 | Output a description of the relevant class type. */ | |
a3f97cbb | 8766 | gen_type_die (TYPE_OFFSET_BASETYPE (type), context_die); |
71dfc51f | 8767 | |
a3f97cbb JW |
8768 | /* Output a description of the type of the object pointed to. */ |
8769 | gen_type_die (TREE_TYPE (type), context_die); | |
71dfc51f | 8770 | |
a3f97cbb JW |
8771 | /* Now output a DIE to represent this pointer-to-data-member type |
8772 | itself. */ | |
8773 | gen_ptr_to_mbr_type_die (type, context_die); | |
8774 | break; | |
8775 | ||
8776 | case SET_TYPE: | |
8777 | gen_type_die (TYPE_DOMAIN (type), context_die); | |
8778 | gen_set_type_die (type, context_die); | |
8779 | break; | |
8780 | ||
8781 | case FILE_TYPE: | |
8782 | gen_type_die (TREE_TYPE (type), context_die); | |
8783 | abort (); /* No way to represent these in Dwarf yet! */ | |
8784 | break; | |
8785 | ||
8786 | case FUNCTION_TYPE: | |
8787 | /* Force out return type (in case it wasn't forced out already). */ | |
8788 | gen_type_die (TREE_TYPE (type), context_die); | |
8789 | gen_subroutine_type_die (type, context_die); | |
8790 | break; | |
8791 | ||
8792 | case METHOD_TYPE: | |
8793 | /* Force out return type (in case it wasn't forced out already). */ | |
8794 | gen_type_die (TREE_TYPE (type), context_die); | |
8795 | gen_subroutine_type_die (type, context_die); | |
8796 | break; | |
8797 | ||
8798 | case ARRAY_TYPE: | |
8799 | if (TYPE_STRING_FLAG (type) && TREE_CODE (TREE_TYPE (type)) == CHAR_TYPE) | |
8800 | { | |
8801 | gen_type_die (TREE_TYPE (type), context_die); | |
8802 | gen_string_type_die (type, context_die); | |
8803 | } | |
8804 | else | |
71dfc51f | 8805 | gen_array_type_die (type, context_die); |
a3f97cbb JW |
8806 | break; |
8807 | ||
8808 | case ENUMERAL_TYPE: | |
8809 | case RECORD_TYPE: | |
8810 | case UNION_TYPE: | |
8811 | case QUAL_UNION_TYPE: | |
a082c85a JM |
8812 | /* If this is a nested type whose containing class hasn't been |
8813 | written out yet, writing it out will cover this one, too. */ | |
8814 | if (TYPE_CONTEXT (type) | |
8815 | && TREE_CODE_CLASS (TREE_CODE (TYPE_CONTEXT (type))) == 't' | |
8816 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) | |
a94dbf2c JM |
8817 | { |
8818 | gen_type_die (TYPE_CONTEXT (type), context_die); | |
8819 | ||
8820 | if (TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) | |
8821 | return; | |
8822 | ||
8823 | /* If that failed, attach ourselves to the stub. */ | |
8824 | push_decl_scope (TYPE_CONTEXT (type)); | |
8825 | context_die = lookup_type_die (TYPE_CONTEXT (type)); | |
8826 | } | |
8827 | ||
8828 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
273dbe67 | 8829 | gen_enumeration_type_die (type, context_die); |
a3f97cbb | 8830 | else |
273dbe67 | 8831 | gen_struct_or_union_type_die (type, context_die); |
4b674448 | 8832 | |
a94dbf2c JM |
8833 | if (TYPE_CONTEXT (type) |
8834 | && TREE_CODE_CLASS (TREE_CODE (TYPE_CONTEXT (type))) == 't' | |
8835 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) | |
8836 | pop_decl_scope (); | |
8837 | ||
4b674448 | 8838 | /* Don't set TREE_ASM_WRITTEN on an incomplete struct; we want to fix |
a082c85a JM |
8839 | it up if it is ever completed. gen_*_type_die will set it for us |
8840 | when appropriate. */ | |
8841 | return; | |
a3f97cbb JW |
8842 | |
8843 | case VOID_TYPE: | |
8844 | case INTEGER_TYPE: | |
8845 | case REAL_TYPE: | |
8846 | case COMPLEX_TYPE: | |
8847 | case BOOLEAN_TYPE: | |
8848 | case CHAR_TYPE: | |
8849 | /* No DIEs needed for fundamental types. */ | |
8850 | break; | |
8851 | ||
8852 | case LANG_TYPE: | |
8853 | /* No Dwarf representation currently defined. */ | |
8854 | break; | |
8855 | ||
8856 | default: | |
8857 | abort (); | |
8858 | } | |
8859 | ||
8860 | TREE_ASM_WRITTEN (type) = 1; | |
8861 | } | |
8862 | ||
8863 | /* Generate a DIE for a tagged type instantiation. */ | |
71dfc51f | 8864 | |
a3f97cbb JW |
8865 | static void |
8866 | gen_tagged_type_instantiation_die (type, context_die) | |
8867 | register tree type; | |
8868 | register dw_die_ref context_die; | |
8869 | { | |
71dfc51f RK |
8870 | if (type == NULL_TREE || type == error_mark_node) |
8871 | return; | |
a3f97cbb JW |
8872 | |
8873 | /* We are going to output a DIE to represent the unqualified version of of | |
8874 | this type (i.e. without any const or volatile qualifiers) so make sure | |
8875 | that we have the main variant (i.e. the unqualified version) of this | |
8876 | type now. */ | |
3a88cbd1 JL |
8877 | if (type != type_main_variant (type) |
8878 | || !TREE_ASM_WRITTEN (type)) | |
8879 | abort (); | |
a3f97cbb JW |
8880 | |
8881 | switch (TREE_CODE (type)) | |
8882 | { | |
8883 | case ERROR_MARK: | |
8884 | break; | |
8885 | ||
8886 | case ENUMERAL_TYPE: | |
8887 | gen_inlined_enumeration_type_die (type, context_die); | |
8888 | break; | |
8889 | ||
8890 | case RECORD_TYPE: | |
8891 | gen_inlined_structure_type_die (type, context_die); | |
8892 | break; | |
8893 | ||
8894 | case UNION_TYPE: | |
8895 | case QUAL_UNION_TYPE: | |
8896 | gen_inlined_union_type_die (type, context_die); | |
8897 | break; | |
8898 | ||
8899 | default: | |
71dfc51f | 8900 | abort (); |
a3f97cbb JW |
8901 | } |
8902 | } | |
8903 | ||
8904 | /* Generate a DW_TAG_lexical_block DIE followed by DIEs to represent all of the | |
8905 | things which are local to the given block. */ | |
71dfc51f | 8906 | |
a3f97cbb | 8907 | static void |
d7248bff | 8908 | gen_block_die (stmt, context_die, depth) |
a3f97cbb JW |
8909 | register tree stmt; |
8910 | register dw_die_ref context_die; | |
d7248bff | 8911 | int depth; |
a3f97cbb JW |
8912 | { |
8913 | register int must_output_die = 0; | |
8914 | register tree origin; | |
8915 | register tree decl; | |
8916 | register enum tree_code origin_code; | |
8917 | ||
8918 | /* Ignore blocks never really used to make RTL. */ | |
8919 | ||
71dfc51f RK |
8920 | if (stmt == NULL_TREE || !TREE_USED (stmt)) |
8921 | return; | |
a3f97cbb JW |
8922 | |
8923 | /* Determine the "ultimate origin" of this block. This block may be an | |
8924 | inlined instance of an inlined instance of inline function, so we have | |
8925 | to trace all of the way back through the origin chain to find out what | |
8926 | sort of node actually served as the original seed for the creation of | |
8927 | the current block. */ | |
8928 | origin = block_ultimate_origin (stmt); | |
8929 | origin_code = (origin != NULL) ? TREE_CODE (origin) : ERROR_MARK; | |
8930 | ||
8931 | /* Determine if we need to output any Dwarf DIEs at all to represent this | |
8932 | block. */ | |
8933 | if (origin_code == FUNCTION_DECL) | |
71dfc51f RK |
8934 | /* The outer scopes for inlinings *must* always be represented. We |
8935 | generate DW_TAG_inlined_subroutine DIEs for them. (See below.) */ | |
8936 | must_output_die = 1; | |
a3f97cbb JW |
8937 | else |
8938 | { | |
8939 | /* In the case where the current block represents an inlining of the | |
8940 | "body block" of an inline function, we must *NOT* output any DIE for | |
8941 | this block because we have already output a DIE to represent the | |
8942 | whole inlined function scope and the "body block" of any function | |
8943 | doesn't really represent a different scope according to ANSI C | |
8944 | rules. So we check here to make sure that this block does not | |
8945 | represent a "body block inlining" before trying to set the | |
8946 | `must_output_die' flag. */ | |
d7248bff | 8947 | if (! is_body_block (origin ? origin : stmt)) |
a3f97cbb JW |
8948 | { |
8949 | /* Determine if this block directly contains any "significant" | |
8950 | local declarations which we will need to output DIEs for. */ | |
8951 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
71dfc51f RK |
8952 | /* We are not in terse mode so *any* local declaration counts |
8953 | as being a "significant" one. */ | |
8954 | must_output_die = (BLOCK_VARS (stmt) != NULL); | |
a3f97cbb | 8955 | else |
71dfc51f RK |
8956 | /* We are in terse mode, so only local (nested) function |
8957 | definitions count as "significant" local declarations. */ | |
8958 | for (decl = BLOCK_VARS (stmt); | |
8959 | decl != NULL; decl = TREE_CHAIN (decl)) | |
8960 | if (TREE_CODE (decl) == FUNCTION_DECL | |
8961 | && DECL_INITIAL (decl)) | |
a3f97cbb | 8962 | { |
71dfc51f RK |
8963 | must_output_die = 1; |
8964 | break; | |
a3f97cbb | 8965 | } |
a3f97cbb JW |
8966 | } |
8967 | } | |
8968 | ||
8969 | /* It would be a waste of space to generate a Dwarf DW_TAG_lexical_block | |
8970 | DIE for any block which contains no significant local declarations at | |
8971 | all. Rather, in such cases we just call `decls_for_scope' so that any | |
8972 | needed Dwarf info for any sub-blocks will get properly generated. Note | |
8973 | that in terse mode, our definition of what constitutes a "significant" | |
8974 | local declaration gets restricted to include only inlined function | |
8975 | instances and local (nested) function definitions. */ | |
8976 | if (must_output_die) | |
8977 | { | |
8978 | if (origin_code == FUNCTION_DECL) | |
71dfc51f | 8979 | gen_inlined_subroutine_die (stmt, context_die, depth); |
a3f97cbb | 8980 | else |
71dfc51f | 8981 | gen_lexical_block_die (stmt, context_die, depth); |
a3f97cbb JW |
8982 | } |
8983 | else | |
d7248bff | 8984 | decls_for_scope (stmt, context_die, depth); |
a3f97cbb JW |
8985 | } |
8986 | ||
8987 | /* Generate all of the decls declared within a given scope and (recursively) | |
8988 | all of it's sub-blocks. */ | |
71dfc51f | 8989 | |
a3f97cbb | 8990 | static void |
d7248bff | 8991 | decls_for_scope (stmt, context_die, depth) |
a3f97cbb JW |
8992 | register tree stmt; |
8993 | register dw_die_ref context_die; | |
d7248bff | 8994 | int depth; |
a3f97cbb JW |
8995 | { |
8996 | register tree decl; | |
8997 | register tree subblocks; | |
71dfc51f | 8998 | |
a3f97cbb | 8999 | /* Ignore blocks never really used to make RTL. */ |
71dfc51f RK |
9000 | if (stmt == NULL_TREE || ! TREE_USED (stmt)) |
9001 | return; | |
9002 | ||
d7248bff | 9003 | if (!BLOCK_ABSTRACT (stmt) && depth > 0) |
71dfc51f | 9004 | next_block_number++; |
a3f97cbb | 9005 | |
88dad228 JM |
9006 | /* Output the DIEs to represent all of the data objects and typedefs |
9007 | declared directly within this block but not within any nested | |
9008 | sub-blocks. Also, nested function and tag DIEs have been | |
9009 | generated with a parent of NULL; fix that up now. */ | |
a3f97cbb JW |
9010 | for (decl = BLOCK_VARS (stmt); |
9011 | decl != NULL; decl = TREE_CHAIN (decl)) | |
9012 | { | |
a94dbf2c JM |
9013 | register dw_die_ref die; |
9014 | ||
88dad228 | 9015 | if (TREE_CODE (decl) == FUNCTION_DECL) |
a94dbf2c | 9016 | die = lookup_decl_die (decl); |
88dad228 | 9017 | else if (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl)) |
a94dbf2c JM |
9018 | die = lookup_type_die (TREE_TYPE (decl)); |
9019 | else | |
9020 | die = NULL; | |
9021 | ||
71dfc51f | 9022 | if (die != NULL && die->die_parent == NULL) |
ef76d03b | 9023 | add_child_die (context_die, die); |
88dad228 JM |
9024 | else |
9025 | gen_decl_die (decl, context_die); | |
a3f97cbb JW |
9026 | } |
9027 | ||
9028 | /* Output the DIEs to represent all sub-blocks (and the items declared | |
9029 | therein) of this block. */ | |
9030 | for (subblocks = BLOCK_SUBBLOCKS (stmt); | |
9031 | subblocks != NULL; | |
9032 | subblocks = BLOCK_CHAIN (subblocks)) | |
71dfc51f | 9033 | gen_block_die (subblocks, context_die, depth + 1); |
a3f97cbb JW |
9034 | } |
9035 | ||
a94dbf2c | 9036 | /* Is this a typedef we can avoid emitting? */ |
71dfc51f RK |
9037 | |
9038 | static inline int | |
a94dbf2c JM |
9039 | is_redundant_typedef (decl) |
9040 | register tree decl; | |
9041 | { | |
9042 | if (TYPE_DECL_IS_STUB (decl)) | |
9043 | return 1; | |
71dfc51f | 9044 | |
a94dbf2c JM |
9045 | if (DECL_ARTIFICIAL (decl) |
9046 | && DECL_CONTEXT (decl) | |
9047 | && is_tagged_type (DECL_CONTEXT (decl)) | |
9048 | && TREE_CODE (TYPE_NAME (DECL_CONTEXT (decl))) == TYPE_DECL | |
9049 | && DECL_NAME (decl) == DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))) | |
9050 | /* Also ignore the artificial member typedef for the class name. */ | |
9051 | return 1; | |
71dfc51f | 9052 | |
a94dbf2c JM |
9053 | return 0; |
9054 | } | |
9055 | ||
a3f97cbb | 9056 | /* Generate Dwarf debug information for a decl described by DECL. */ |
71dfc51f | 9057 | |
a3f97cbb JW |
9058 | static void |
9059 | gen_decl_die (decl, context_die) | |
9060 | register tree decl; | |
9061 | register dw_die_ref context_die; | |
9062 | { | |
9063 | register tree origin; | |
71dfc51f | 9064 | |
a3f97cbb JW |
9065 | /* Make a note of the decl node we are going to be working on. We may need |
9066 | to give the user the source coordinates of where it appeared in case we | |
9067 | notice (later on) that something about it looks screwy. */ | |
9068 | dwarf_last_decl = decl; | |
9069 | ||
9070 | if (TREE_CODE (decl) == ERROR_MARK) | |
71dfc51f | 9071 | return; |
a3f97cbb JW |
9072 | |
9073 | /* If this ..._DECL node is marked to be ignored, then ignore it. But don't | |
9074 | ignore a function definition, since that would screw up our count of | |
9075 | blocks, and that it turn will completely screw up the the labels we will | |
9076 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for | |
9077 | subsequent blocks). */ | |
9078 | if (DECL_IGNORED_P (decl) && TREE_CODE (decl) != FUNCTION_DECL) | |
71dfc51f | 9079 | return; |
a3f97cbb | 9080 | |
a3f97cbb JW |
9081 | switch (TREE_CODE (decl)) |
9082 | { | |
9083 | case CONST_DECL: | |
9084 | /* The individual enumerators of an enum type get output when we output | |
9085 | the Dwarf representation of the relevant enum type itself. */ | |
9086 | break; | |
9087 | ||
9088 | case FUNCTION_DECL: | |
4edb7b60 JM |
9089 | /* Don't output any DIEs to represent mere function declarations, |
9090 | unless they are class members or explicit block externs. */ | |
9091 | if (DECL_INITIAL (decl) == NULL_TREE && DECL_CONTEXT (decl) == NULL_TREE | |
9092 | && (current_function_decl == NULL_TREE || ! DECL_ARTIFICIAL (decl))) | |
71dfc51f | 9093 | break; |
bdb669cb | 9094 | |
4927276d | 9095 | if (debug_info_level > DINFO_LEVEL_TERSE) |
a94dbf2c JM |
9096 | { |
9097 | /* Before we describe the FUNCTION_DECL itself, make sure that we | |
9098 | have described its return type. */ | |
9099 | gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die); | |
9100 | ||
9101 | /* And its containing type. */ | |
9102 | origin = decl_class_context (decl); | |
71dfc51f | 9103 | if (origin != NULL_TREE) |
a94dbf2c JM |
9104 | gen_type_die (origin, context_die); |
9105 | ||
9106 | /* And its virtual context. */ | |
71dfc51f | 9107 | if (DECL_VINDEX (decl) != NULL_TREE) |
a94dbf2c JM |
9108 | gen_type_die (DECL_CONTEXT (decl), context_die); |
9109 | } | |
a3f97cbb JW |
9110 | |
9111 | /* Now output a DIE to represent the function itself. */ | |
9112 | gen_subprogram_die (decl, context_die); | |
9113 | break; | |
9114 | ||
9115 | case TYPE_DECL: | |
9116 | /* If we are in terse mode, don't generate any DIEs to represent any | |
4927276d | 9117 | actual typedefs. */ |
a3f97cbb | 9118 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 9119 | break; |
a3f97cbb | 9120 | |
5c90448c JM |
9121 | /* In the special case of a TYPE_DECL node representing the |
9122 | declaration of some type tag, if the given TYPE_DECL is marked as | |
a3f97cbb JW |
9123 | having been instantiated from some other (original) TYPE_DECL node |
9124 | (e.g. one which was generated within the original definition of an | |
9125 | inline function) we have to generate a special (abbreviated) | |
ef76d03b | 9126 | DW_TAG_structure_type, DW_TAG_union_type, or DW_TAG_enumeration_type |
a3f97cbb | 9127 | DIE here. */ |
71dfc51f | 9128 | if (TYPE_DECL_IS_STUB (decl) && DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE) |
a3f97cbb JW |
9129 | { |
9130 | gen_tagged_type_instantiation_die (TREE_TYPE (decl), context_die); | |
9131 | break; | |
9132 | } | |
a3f97cbb | 9133 | |
a94dbf2c JM |
9134 | if (is_redundant_typedef (decl)) |
9135 | gen_type_die (TREE_TYPE (decl), context_die); | |
9136 | else | |
71dfc51f RK |
9137 | /* Output a DIE to represent the typedef itself. */ |
9138 | gen_typedef_die (decl, context_die); | |
a3f97cbb JW |
9139 | break; |
9140 | ||
9141 | case LABEL_DECL: | |
9142 | if (debug_info_level >= DINFO_LEVEL_NORMAL) | |
71dfc51f | 9143 | gen_label_die (decl, context_die); |
a3f97cbb JW |
9144 | break; |
9145 | ||
9146 | case VAR_DECL: | |
9147 | /* If we are in terse mode, don't generate any DIEs to represent any | |
9148 | variable declarations or definitions. */ | |
9149 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 9150 | break; |
a3f97cbb JW |
9151 | |
9152 | /* Output any DIEs that are needed to specify the type of this data | |
9153 | object. */ | |
9154 | gen_type_die (TREE_TYPE (decl), context_die); | |
9155 | ||
a94dbf2c JM |
9156 | /* And its containing type. */ |
9157 | origin = decl_class_context (decl); | |
71dfc51f | 9158 | if (origin != NULL_TREE) |
a94dbf2c JM |
9159 | gen_type_die (origin, context_die); |
9160 | ||
a3f97cbb JW |
9161 | /* Now output the DIE to represent the data object itself. This gets |
9162 | complicated because of the possibility that the VAR_DECL really | |
9163 | represents an inlined instance of a formal parameter for an inline | |
9164 | function. */ | |
9165 | origin = decl_ultimate_origin (decl); | |
71dfc51f RK |
9166 | if (origin != NULL_TREE && TREE_CODE (origin) == PARM_DECL) |
9167 | gen_formal_parameter_die (decl, context_die); | |
a3f97cbb | 9168 | else |
71dfc51f | 9169 | gen_variable_die (decl, context_die); |
a3f97cbb JW |
9170 | break; |
9171 | ||
9172 | case FIELD_DECL: | |
a94dbf2c JM |
9173 | /* Ignore the nameless fields that are used to skip bits, but |
9174 | handle C++ anonymous unions. */ | |
71dfc51f RK |
9175 | if (DECL_NAME (decl) != NULL_TREE |
9176 | || TREE_CODE (TREE_TYPE (decl)) == UNION_TYPE) | |
a3f97cbb JW |
9177 | { |
9178 | gen_type_die (member_declared_type (decl), context_die); | |
9179 | gen_field_die (decl, context_die); | |
9180 | } | |
9181 | break; | |
9182 | ||
9183 | case PARM_DECL: | |
9184 | gen_type_die (TREE_TYPE (decl), context_die); | |
9185 | gen_formal_parameter_die (decl, context_die); | |
9186 | break; | |
9187 | ||
9188 | default: | |
9189 | abort (); | |
9190 | } | |
a3f97cbb JW |
9191 | } |
9192 | \f | |
71dfc51f RK |
9193 | /* Write the debugging output for DECL. */ |
9194 | ||
a3f97cbb | 9195 | void |
88dad228 | 9196 | dwarf2out_decl (decl) |
a3f97cbb | 9197 | register tree decl; |
a3f97cbb | 9198 | { |
88dad228 JM |
9199 | register dw_die_ref context_die = comp_unit_die; |
9200 | ||
a3f97cbb | 9201 | if (TREE_CODE (decl) == ERROR_MARK) |
71dfc51f | 9202 | return; |
a3f97cbb JW |
9203 | |
9204 | /* If this ..._DECL node is marked to be ignored, then ignore it. We gotta | |
9205 | hope that the node in question doesn't represent a function definition. | |
9206 | If it does, then totally ignoring it is bound to screw up our count of | |
9207 | blocks, and that it turn will completely screw up the the labels we will | |
9208 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for | |
9209 | subsequent blocks). (It's too bad that BLOCK nodes don't carry their | |
9210 | own sequence numbers with them!) */ | |
9211 | if (DECL_IGNORED_P (decl)) | |
9212 | { | |
9213 | if (TREE_CODE (decl) == FUNCTION_DECL | |
9214 | && DECL_INITIAL (decl) != NULL) | |
71dfc51f RK |
9215 | abort (); |
9216 | ||
a3f97cbb JW |
9217 | return; |
9218 | } | |
9219 | ||
9220 | switch (TREE_CODE (decl)) | |
9221 | { | |
9222 | case FUNCTION_DECL: | |
9223 | /* Ignore this FUNCTION_DECL if it refers to a builtin declaration of a | |
9224 | builtin function. Explicit programmer-supplied declarations of | |
9225 | these same functions should NOT be ignored however. */ | |
9226 | if (DECL_EXTERNAL (decl) && DECL_FUNCTION_CODE (decl)) | |
b1ccbc24 | 9227 | return; |
a3f97cbb JW |
9228 | |
9229 | /* What we would really like to do here is to filter out all mere | |
9230 | file-scope declarations of file-scope functions which are never | |
9231 | referenced later within this translation unit (and keep all of ones | |
9232 | that *are* referenced later on) but we aren't clarvoiant, so we have | |
9233 | no idea which functions will be referenced in the future (i.e. later | |
9234 | on within the current translation unit). So here we just ignore all | |
9235 | file-scope function declarations which are not also definitions. If | |
9236 | and when the debugger needs to know something about these funcstion, | |
9237 | it wil have to hunt around and find the DWARF information associated | |
9238 | with the definition of the function. Note that we can't just check | |
9239 | `DECL_EXTERNAL' to find out which FUNCTION_DECL nodes represent | |
9240 | definitions and which ones represent mere declarations. We have to | |
9241 | check `DECL_INITIAL' instead. That's because the C front-end | |
9242 | supports some weird semantics for "extern inline" function | |
9243 | definitions. These can get inlined within the current translation | |
9244 | unit (an thus, we need to generate DWARF info for their abstract | |
9245 | instances so that the DWARF info for the concrete inlined instances | |
9246 | can have something to refer to) but the compiler never generates any | |
9247 | out-of-lines instances of such things (despite the fact that they | |
9248 | *are* definitions). The important point is that the C front-end | |
9249 | marks these "extern inline" functions as DECL_EXTERNAL, but we need | |
273dbe67 | 9250 | to generate DWARF for them anyway. Note that the C++ front-end also |
a3f97cbb JW |
9251 | plays some similar games for inline function definitions appearing |
9252 | within include files which also contain | |
9253 | `#pragma interface' pragmas. */ | |
9254 | if (DECL_INITIAL (decl) == NULL_TREE) | |
b1ccbc24 | 9255 | return; |
88dad228 | 9256 | |
9c6cd30e JM |
9257 | /* If we're a nested function, initially use a parent of NULL; if we're |
9258 | a plain function, this will be fixed up in decls_for_scope. If | |
9259 | we're a method, it will be ignored, since we already have a DIE. */ | |
88dad228 | 9260 | if (decl_function_context (decl)) |
9c6cd30e | 9261 | context_die = NULL; |
88dad228 | 9262 | |
a3f97cbb JW |
9263 | break; |
9264 | ||
9265 | case VAR_DECL: | |
9266 | /* Ignore this VAR_DECL if it refers to a file-scope extern data object | |
9267 | declaration and if the declaration was never even referenced from | |
9268 | within this entire compilation unit. We suppress these DIEs in | |
9269 | order to save space in the .debug section (by eliminating entries | |
9270 | which are probably useless). Note that we must not suppress | |
9271 | block-local extern declarations (whether used or not) because that | |
9272 | would screw-up the debugger's name lookup mechanism and cause it to | |
9273 | miss things which really ought to be in scope at a given point. */ | |
9274 | if (DECL_EXTERNAL (decl) && !TREE_USED (decl)) | |
71dfc51f | 9275 | return; |
a3f97cbb JW |
9276 | |
9277 | /* If we are in terse mode, don't generate any DIEs to represent any | |
9278 | variable declarations or definitions. */ | |
9279 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 9280 | return; |
a3f97cbb JW |
9281 | break; |
9282 | ||
9283 | case TYPE_DECL: | |
9284 | /* Don't bother trying to generate any DIEs to represent any of the | |
a9d38797 JM |
9285 | normal built-in types for the language we are compiling. */ |
9286 | if (DECL_SOURCE_LINE (decl) == 0) | |
a94dbf2c JM |
9287 | { |
9288 | /* OK, we need to generate one for `bool' so GDB knows what type | |
9289 | comparisons have. */ | |
9290 | if ((get_AT_unsigned (comp_unit_die, DW_AT_language) | |
9291 | == DW_LANG_C_plus_plus) | |
9292 | && TREE_CODE (TREE_TYPE (decl)) == BOOLEAN_TYPE) | |
9293 | modified_type_die (TREE_TYPE (decl), 0, 0, NULL); | |
71dfc51f | 9294 | |
a94dbf2c JM |
9295 | return; |
9296 | } | |
a3f97cbb | 9297 | |
88dad228 | 9298 | /* If we are in terse mode, don't generate any DIEs for types. */ |
a3f97cbb | 9299 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 9300 | return; |
88dad228 JM |
9301 | |
9302 | /* If we're a function-scope tag, initially use a parent of NULL; | |
9303 | this will be fixed up in decls_for_scope. */ | |
9304 | if (decl_function_context (decl)) | |
3f76745e | 9305 | context_die = NULL; |
88dad228 | 9306 | |
a3f97cbb JW |
9307 | break; |
9308 | ||
9309 | default: | |
9310 | return; | |
9311 | } | |
9312 | ||
88dad228 | 9313 | gen_decl_die (decl, context_die); |
a94dbf2c | 9314 | output_pending_types_for_scope (comp_unit_die); |
a3f97cbb JW |
9315 | } |
9316 | ||
9317 | /* Output a marker (i.e. a label) for the beginning of the generated code for | |
9318 | a lexical block. */ | |
71dfc51f | 9319 | |
a3f97cbb | 9320 | void |
9a666dda | 9321 | dwarf2out_begin_block (blocknum) |
a3f97cbb JW |
9322 | register unsigned blocknum; |
9323 | { | |
a3f97cbb | 9324 | function_section (current_function_decl); |
5c90448c | 9325 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum); |
a3f97cbb JW |
9326 | } |
9327 | ||
9328 | /* Output a marker (i.e. a label) for the end of the generated code for a | |
9329 | lexical block. */ | |
71dfc51f | 9330 | |
a3f97cbb | 9331 | void |
9a666dda | 9332 | dwarf2out_end_block (blocknum) |
a3f97cbb JW |
9333 | register unsigned blocknum; |
9334 | { | |
a3f97cbb | 9335 | function_section (current_function_decl); |
5c90448c | 9336 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum); |
a3f97cbb JW |
9337 | } |
9338 | ||
9339 | /* Output a marker (i.e. a label) at a point in the assembly code which | |
9340 | corresponds to a given source level label. */ | |
71dfc51f | 9341 | |
a3f97cbb | 9342 | void |
9a666dda | 9343 | dwarf2out_label (insn) |
a3f97cbb JW |
9344 | register rtx insn; |
9345 | { | |
9346 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f | 9347 | |
a3f97cbb JW |
9348 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
9349 | { | |
9350 | function_section (current_function_decl); | |
5c90448c JM |
9351 | sprintf (label, INSN_LABEL_FMT, current_funcdef_number); |
9352 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, label, | |
9353 | (unsigned) INSN_UID (insn)); | |
a3f97cbb JW |
9354 | } |
9355 | } | |
9356 | ||
a3f97cbb | 9357 | /* Lookup a filename (in the list of filenames that we know about here in |
9a666dda | 9358 | dwarf2out.c) and return its "index". The index of each (known) filename is |
a3f97cbb JW |
9359 | just a unique number which is associated with only that one filename. |
9360 | We need such numbers for the sake of generating labels | |
9361 | (in the .debug_sfnames section) and references to those | |
9362 | files numbers (in the .debug_srcinfo and.debug_macinfo sections). | |
9363 | If the filename given as an argument is not found in our current list, | |
9364 | add it to the list and assign it the next available unique index number. | |
9365 | In order to speed up searches, we remember the index of the filename | |
9366 | was looked up last. This handles the majority of all searches. */ | |
71dfc51f | 9367 | |
a3f97cbb JW |
9368 | static unsigned |
9369 | lookup_filename (file_name) | |
9370 | char *file_name; | |
9371 | { | |
9372 | static unsigned last_file_lookup_index = 0; | |
a3f97cbb JW |
9373 | register unsigned i; |
9374 | ||
9375 | /* Check to see if the file name that was searched on the previous call | |
9376 | matches this file name. If so, return the index. */ | |
9377 | if (last_file_lookup_index != 0) | |
71dfc51f RK |
9378 | if (strcmp (file_name, file_table[last_file_lookup_index]) == 0) |
9379 | return last_file_lookup_index; | |
a3f97cbb JW |
9380 | |
9381 | /* Didn't match the previous lookup, search the table */ | |
9382 | for (i = 1; i < file_table_in_use; ++i) | |
71dfc51f RK |
9383 | if (strcmp (file_name, file_table[i]) == 0) |
9384 | { | |
9385 | last_file_lookup_index = i; | |
9386 | return i; | |
9387 | } | |
a3f97cbb JW |
9388 | |
9389 | /* Prepare to add a new table entry by making sure there is enough space in | |
9390 | the table to do so. If not, expand the current table. */ | |
9391 | if (file_table_in_use == file_table_allocated) | |
9392 | { | |
9393 | file_table_allocated += FILE_TABLE_INCREMENT; | |
9394 | file_table | |
71dfc51f RK |
9395 | = (char **) xrealloc (file_table, |
9396 | file_table_allocated * sizeof (char *)); | |
a3f97cbb JW |
9397 | } |
9398 | ||
71dfc51f | 9399 | /* Add the new entry to the end of the filename table. */ |
a3f97cbb JW |
9400 | file_table[file_table_in_use] = xstrdup (file_name); |
9401 | last_file_lookup_index = file_table_in_use++; | |
71dfc51f | 9402 | |
a3f97cbb JW |
9403 | return last_file_lookup_index; |
9404 | } | |
9405 | ||
9406 | /* Output a label to mark the beginning of a source code line entry | |
9407 | and record information relating to this source line, in | |
9408 | 'line_info_table' for later output of the .debug_line section. */ | |
71dfc51f | 9409 | |
a3f97cbb | 9410 | void |
9a666dda | 9411 | dwarf2out_line (filename, line) |
a3f97cbb JW |
9412 | register char *filename; |
9413 | register unsigned line; | |
9414 | { | |
a3f97cbb JW |
9415 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
9416 | { | |
9417 | function_section (current_function_decl); | |
a3f97cbb | 9418 | |
e90b62db | 9419 | if (DECL_SECTION_NAME (current_function_decl)) |
a3f97cbb | 9420 | { |
e90b62db | 9421 | register dw_separate_line_info_ref line_info; |
5c90448c JM |
9422 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, SEPARATE_LINE_CODE_LABEL, |
9423 | separate_line_info_table_in_use); | |
e90b62db JM |
9424 | fputc ('\n', asm_out_file); |
9425 | ||
9426 | /* expand the line info table if necessary */ | |
9427 | if (separate_line_info_table_in_use | |
9428 | == separate_line_info_table_allocated) | |
9429 | { | |
9430 | separate_line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
9431 | separate_line_info_table | |
71dfc51f RK |
9432 | = (dw_separate_line_info_ref) |
9433 | xrealloc (separate_line_info_table, | |
9434 | separate_line_info_table_allocated | |
9435 | * sizeof (dw_separate_line_info_entry)); | |
e90b62db | 9436 | } |
71dfc51f RK |
9437 | |
9438 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
9439 | line_info |
9440 | = &separate_line_info_table[separate_line_info_table_in_use++]; | |
9441 | line_info->dw_file_num = lookup_filename (filename); | |
9442 | line_info->dw_line_num = line; | |
9443 | line_info->function = current_funcdef_number; | |
9444 | } | |
9445 | else | |
9446 | { | |
9447 | register dw_line_info_ref line_info; | |
71dfc51f | 9448 | |
5c90448c JM |
9449 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, LINE_CODE_LABEL, |
9450 | line_info_table_in_use); | |
e90b62db JM |
9451 | fputc ('\n', asm_out_file); |
9452 | ||
71dfc51f | 9453 | /* Expand the line info table if necessary. */ |
e90b62db JM |
9454 | if (line_info_table_in_use == line_info_table_allocated) |
9455 | { | |
9456 | line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
9457 | line_info_table | |
71dfc51f RK |
9458 | = (dw_line_info_ref) |
9459 | xrealloc (line_info_table, | |
9460 | (line_info_table_allocated | |
9461 | * sizeof (dw_line_info_entry))); | |
e90b62db | 9462 | } |
71dfc51f RK |
9463 | |
9464 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
9465 | line_info = &line_info_table[line_info_table_in_use++]; |
9466 | line_info->dw_file_num = lookup_filename (filename); | |
9467 | line_info->dw_line_num = line; | |
a3f97cbb | 9468 | } |
a3f97cbb JW |
9469 | } |
9470 | } | |
9471 | ||
9472 | /* Record the beginning of a new source file, for later output | |
9473 | of the .debug_macinfo section. At present, unimplemented. */ | |
71dfc51f | 9474 | |
a3f97cbb | 9475 | void |
9a666dda | 9476 | dwarf2out_start_source_file (filename) |
a3f97cbb JW |
9477 | register char *filename; |
9478 | { | |
9479 | } | |
9480 | ||
9a666dda | 9481 | /* Record the end of a source file, for later output |
a3f97cbb | 9482 | of the .debug_macinfo section. At present, unimplemented. */ |
71dfc51f | 9483 | |
a3f97cbb | 9484 | void |
9a666dda | 9485 | dwarf2out_end_source_file () |
a3f97cbb JW |
9486 | { |
9487 | } | |
9488 | ||
9489 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
9490 | the tail part of the directive line, i.e. the part which is past the | |
9491 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 9492 | |
a3f97cbb | 9493 | void |
9a666dda | 9494 | dwarf2out_define (lineno, buffer) |
a3f97cbb JW |
9495 | register unsigned lineno; |
9496 | register char *buffer; | |
9497 | { | |
9498 | static int initialized = 0; | |
9499 | if (!initialized) | |
9500 | { | |
9a666dda | 9501 | dwarf2out_start_source_file (primary_filename); |
a3f97cbb JW |
9502 | initialized = 1; |
9503 | } | |
9504 | } | |
9505 | ||
9506 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
9507 | the tail part of the directive line, i.e. the part which is past the | |
9508 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 9509 | |
a3f97cbb | 9510 | void |
9a666dda | 9511 | dwarf2out_undef (lineno, buffer) |
a3f97cbb JW |
9512 | register unsigned lineno; |
9513 | register char *buffer; | |
9514 | { | |
9515 | } | |
9516 | ||
9517 | /* Set up for Dwarf output at the start of compilation. */ | |
71dfc51f | 9518 | |
a3f97cbb | 9519 | void |
9a666dda | 9520 | dwarf2out_init (asm_out_file, main_input_filename) |
a3f97cbb JW |
9521 | register FILE *asm_out_file; |
9522 | register char *main_input_filename; | |
9523 | { | |
a3f97cbb JW |
9524 | /* Remember the name of the primary input file. */ |
9525 | primary_filename = main_input_filename; | |
9526 | ||
9527 | /* Allocate the initial hunk of the file_table. */ | |
9528 | file_table = (char **) xmalloc (FILE_TABLE_INCREMENT * sizeof (char *)); | |
b1ccbc24 | 9529 | bzero ((char *) file_table, FILE_TABLE_INCREMENT * sizeof (char *)); |
a3f97cbb | 9530 | file_table_allocated = FILE_TABLE_INCREMENT; |
71dfc51f RK |
9531 | |
9532 | /* Skip the first entry - file numbers begin at 1. */ | |
a3f97cbb JW |
9533 | file_table_in_use = 1; |
9534 | ||
a3f97cbb JW |
9535 | /* Allocate the initial hunk of the decl_die_table. */ |
9536 | decl_die_table | |
9537 | = (dw_die_ref *) xmalloc (DECL_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
b1ccbc24 RK |
9538 | bzero ((char *) decl_die_table, |
9539 | DECL_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
a3f97cbb JW |
9540 | decl_die_table_allocated = DECL_DIE_TABLE_INCREMENT; |
9541 | decl_die_table_in_use = 0; | |
9542 | ||
9543 | /* Allocate the initial hunk of the decl_scope_table. */ | |
9544 | decl_scope_table | |
9545 | = (tree *) xmalloc (DECL_SCOPE_TABLE_INCREMENT * sizeof (tree)); | |
b1ccbc24 RK |
9546 | bzero ((char *) decl_scope_table, |
9547 | DECL_SCOPE_TABLE_INCREMENT * sizeof (tree)); | |
a3f97cbb JW |
9548 | decl_scope_table_allocated = DECL_SCOPE_TABLE_INCREMENT; |
9549 | decl_scope_depth = 0; | |
9550 | ||
9551 | /* Allocate the initial hunk of the abbrev_die_table. */ | |
9552 | abbrev_die_table | |
9553 | = (dw_die_ref *) xmalloc (ABBREV_DIE_TABLE_INCREMENT | |
9554 | * sizeof (dw_die_ref)); | |
b1ccbc24 RK |
9555 | bzero ((char *) abbrev_die_table, |
9556 | ABBREV_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
a3f97cbb | 9557 | abbrev_die_table_allocated = ABBREV_DIE_TABLE_INCREMENT; |
71dfc51f | 9558 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
9559 | abbrev_die_table_in_use = 1; |
9560 | ||
9561 | /* Allocate the initial hunk of the line_info_table. */ | |
9562 | line_info_table | |
9563 | = (dw_line_info_ref) xmalloc (LINE_INFO_TABLE_INCREMENT | |
9564 | * sizeof (dw_line_info_entry)); | |
b1ccbc24 RK |
9565 | bzero ((char *) line_info_table, |
9566 | LINE_INFO_TABLE_INCREMENT * sizeof (dw_line_info_entry)); | |
a3f97cbb | 9567 | line_info_table_allocated = LINE_INFO_TABLE_INCREMENT; |
71dfc51f | 9568 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
9569 | line_info_table_in_use = 1; |
9570 | ||
a3f97cbb JW |
9571 | /* Generate the initial DIE for the .debug section. Note that the (string) |
9572 | value given in the DW_AT_name attribute of the DW_TAG_compile_unit DIE | |
9573 | will (typically) be a relative pathname and that this pathname should be | |
9574 | taken as being relative to the directory from which the compiler was | |
9575 | invoked when the given (base) source file was compiled. */ | |
9576 | gen_compile_unit_die (main_input_filename); | |
9577 | ||
5c90448c | 9578 | ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0); |
a3f97cbb JW |
9579 | } |
9580 | ||
9581 | /* Output stuff that dwarf requires at the end of every file, | |
9582 | and generate the DWARF-2 debugging info. */ | |
71dfc51f | 9583 | |
a3f97cbb | 9584 | void |
9a666dda | 9585 | dwarf2out_finish () |
a3f97cbb | 9586 | { |
ef76d03b JW |
9587 | limbo_die_node *node, *next_node; |
9588 | dw_die_ref die; | |
9589 | dw_attr_ref a; | |
9590 | ||
9591 | /* Traverse the limbo die list, and add parent/child links. The only | |
9592 | dies without parents that should be here are concrete instances of | |
9593 | inline functions, and the comp_unit_die. We can ignore the comp_unit_die. | |
9594 | For concrete instances, we can get the parent die from the abstract | |
9595 | instance. */ | |
9596 | for (node = limbo_die_list; node; node = next_node) | |
9597 | { | |
9598 | next_node = node->next; | |
9599 | die = node->die; | |
9600 | ||
9601 | if (die->die_parent == NULL) | |
9602 | { | |
9603 | a = get_AT (die, DW_AT_abstract_origin); | |
9604 | if (a) | |
9605 | add_child_die (a->dw_attr_val.v.val_die_ref->die_parent, die); | |
9606 | else if (die == comp_unit_die) | |
9607 | ; | |
9608 | else | |
9609 | abort (); | |
9610 | } | |
9611 | free (node); | |
9612 | } | |
9613 | ||
a3f97cbb JW |
9614 | /* Traverse the DIE tree and add sibling attributes to those DIE's |
9615 | that have children. */ | |
9616 | add_sibling_attributes (comp_unit_die); | |
9617 | ||
9618 | /* Output a terminator label for the .text section. */ | |
9619 | fputc ('\n', asm_out_file); | |
9620 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
5c90448c | 9621 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, TEXT_END_LABEL, 0); |
a3f97cbb | 9622 | |
bdb669cb | 9623 | #if 0 |
a3f97cbb JW |
9624 | /* Output a terminator label for the .data section. */ |
9625 | fputc ('\n', asm_out_file); | |
9626 | ASM_OUTPUT_SECTION (asm_out_file, DATA_SECTION); | |
5c90448c | 9627 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, DATA_END_LABEL, 0); |
a3f97cbb JW |
9628 | |
9629 | /* Output a terminator label for the .bss section. */ | |
9630 | fputc ('\n', asm_out_file); | |
9631 | ASM_OUTPUT_SECTION (asm_out_file, BSS_SECTION); | |
5c90448c | 9632 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BSS_END_LABEL, 0); |
bdb669cb | 9633 | #endif |
a3f97cbb | 9634 | |
e90b62db JM |
9635 | /* Output the source line correspondence table. */ |
9636 | if (line_info_table_in_use > 1 || separate_line_info_table_in_use) | |
9637 | { | |
9638 | fputc ('\n', asm_out_file); | |
c53aa195 | 9639 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION); |
e90b62db JM |
9640 | output_line_info (); |
9641 | ||
9642 | /* We can only use the low/high_pc attributes if all of the code | |
9643 | was in .text. */ | |
9644 | if (separate_line_info_table_in_use == 0) | |
9645 | { | |
9646 | add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, TEXT_SECTION); | |
5c90448c | 9647 | add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label); |
e90b62db | 9648 | } |
71dfc51f | 9649 | |
c53aa195 | 9650 | add_AT_section_offset (comp_unit_die, DW_AT_stmt_list, DEBUG_LINE_SECTION); |
e90b62db JM |
9651 | } |
9652 | ||
a3f97cbb JW |
9653 | /* Output the abbreviation table. */ |
9654 | fputc ('\n', asm_out_file); | |
9655 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
9656 | build_abbrev_table (comp_unit_die); | |
9657 | output_abbrev_section (); | |
9658 | ||
a3f97cbb JW |
9659 | /* Initialize the beginning DIE offset - and calculate sizes/offsets. */ |
9660 | next_die_offset = DWARF_COMPILE_UNIT_HEADER_SIZE; | |
9661 | calc_die_sizes (comp_unit_die); | |
9662 | ||
a3f97cbb JW |
9663 | /* Output debugging information. */ |
9664 | fputc ('\n', asm_out_file); | |
c53aa195 | 9665 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_INFO_SECTION); |
a3f97cbb JW |
9666 | output_compilation_unit_header (); |
9667 | output_die (comp_unit_die); | |
9668 | ||
d291dd49 JM |
9669 | if (pubname_table_in_use) |
9670 | { | |
9671 | /* Output public names table. */ | |
9672 | fputc ('\n', asm_out_file); | |
9673 | ASM_OUTPUT_SECTION (asm_out_file, PUBNAMES_SECTION); | |
9674 | output_pubnames (); | |
9675 | } | |
9676 | ||
a3f97cbb JW |
9677 | if (fde_table_in_use) |
9678 | { | |
a3f97cbb JW |
9679 | /* Output the address range information. */ |
9680 | fputc ('\n', asm_out_file); | |
9681 | ASM_OUTPUT_SECTION (asm_out_file, ARANGES_SECTION); | |
9682 | output_aranges (); | |
9683 | } | |
9684 | } | |
9a666dda | 9685 | #endif /* DWARF2_DEBUGGING_INFO */ |