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a3f97cbb | 1 | /* Output Dwarf2 format symbol table information from the GNU C compiler. |
e5e809f4 | 2 | Copyright (C) 1992, 93, 95, 96, 97, 1998 Free Software Foundation, Inc. |
e9a25f70 JL |
3 | Contributed by Gary Funck (gary@intrepid.com). |
4 | Derived from DWARF 1 implementation of Ron Guilmette (rfg@monkeys.com). | |
469ac993 | 5 | Extensively modified by Jason Merrill (jason@cygnus.com). |
a3f97cbb JW |
6 | |
7 | This file is part of GNU CC. | |
8 | ||
9 | GNU CC is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GNU CC is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GNU CC; see the file COPYING. If not, write to | |
21 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
22 | ||
3f76745e JM |
23 | /* The first part of this file deals with the DWARF 2 frame unwind |
24 | information, which is also used by the GCC efficient exception handling | |
25 | mechanism. The second part, controlled only by an #ifdef | |
26 | DWARF2_DEBUGGING_INFO, deals with the other DWARF 2 debugging | |
27 | information. */ | |
28 | ||
0021b564 | 29 | #include "config.h" |
670ee920 | 30 | #include "system.h" |
0021b564 | 31 | #include "defaults.h" |
a3f97cbb JW |
32 | #include "tree.h" |
33 | #include "flags.h" | |
34 | #include "rtl.h" | |
35 | #include "hard-reg-set.h" | |
36 | #include "regs.h" | |
37 | #include "insn-config.h" | |
38 | #include "reload.h" | |
39 | #include "output.h" | |
71dfc51f | 40 | #include "expr.h" |
3f76745e | 41 | #include "except.h" |
a7cc7f29 | 42 | #include "dwarf2.h" |
76ead72b | 43 | #include "dwarf2out.h" |
10f0ad3d | 44 | #include "toplev.h" |
b170964a | 45 | #include "dyn-string.h" |
a3f97cbb | 46 | |
c85f7c16 JL |
47 | /* We cannot use <assert.h> in GCC source, since that would include |
48 | GCC's assert.h, which may not be compatible with the host compiler. */ | |
49 | #undef assert | |
50 | #ifdef NDEBUG | |
51 | # define assert(e) | |
52 | #else | |
53 | # define assert(e) do { if (! (e)) abort (); } while (0) | |
54 | #endif | |
55 | ||
0021b564 JM |
56 | /* Decide whether we want to emit frame unwind information for the current |
57 | translation unit. */ | |
58 | ||
59 | int | |
60 | dwarf2out_do_frame () | |
61 | { | |
62 | return (write_symbols == DWARF2_DEBUG | |
9ec36da5 JL |
63 | #ifdef DWARF2_FRAME_INFO |
64 | || DWARF2_FRAME_INFO | |
65 | #endif | |
0021b564 JM |
66 | #ifdef DWARF2_UNWIND_INFO |
67 | || (flag_exceptions && ! exceptions_via_longjmp) | |
68 | #endif | |
69 | ); | |
70 | } | |
71 | ||
72 | #if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO) | |
73 | ||
71dfc51f RK |
74 | #ifndef __GNUC__ |
75 | #define inline | |
a3f97cbb JW |
76 | #endif |
77 | ||
eaf95893 RK |
78 | /* How to start an assembler comment. */ |
79 | #ifndef ASM_COMMENT_START | |
80 | #define ASM_COMMENT_START ";#" | |
81 | #endif | |
82 | ||
a3f97cbb JW |
83 | typedef struct dw_cfi_struct *dw_cfi_ref; |
84 | typedef struct dw_fde_struct *dw_fde_ref; | |
85 | typedef union dw_cfi_oprnd_struct *dw_cfi_oprnd_ref; | |
a3f97cbb JW |
86 | |
87 | /* Call frames are described using a sequence of Call Frame | |
88 | Information instructions. The register number, offset | |
89 | and address fields are provided as possible operands; | |
90 | their use is selected by the opcode field. */ | |
71dfc51f | 91 | |
a3f97cbb | 92 | typedef union dw_cfi_oprnd_struct |
71dfc51f RK |
93 | { |
94 | unsigned long dw_cfi_reg_num; | |
95 | long int dw_cfi_offset; | |
96 | char *dw_cfi_addr; | |
97 | } | |
a3f97cbb JW |
98 | dw_cfi_oprnd; |
99 | ||
100 | typedef struct dw_cfi_struct | |
71dfc51f RK |
101 | { |
102 | dw_cfi_ref dw_cfi_next; | |
103 | enum dwarf_call_frame_info dw_cfi_opc; | |
104 | dw_cfi_oprnd dw_cfi_oprnd1; | |
105 | dw_cfi_oprnd dw_cfi_oprnd2; | |
106 | } | |
a3f97cbb JW |
107 | dw_cfi_node; |
108 | ||
109 | /* All call frame descriptions (FDE's) in the GCC generated DWARF | |
4b674448 | 110 | refer to a single Common Information Entry (CIE), defined at |
a3f97cbb JW |
111 | the beginning of the .debug_frame section. This used of a single |
112 | CIE obviates the need to keep track of multiple CIE's | |
113 | in the DWARF generation routines below. */ | |
71dfc51f | 114 | |
a3f97cbb | 115 | typedef struct dw_fde_struct |
71dfc51f | 116 | { |
71dfc51f RK |
117 | char *dw_fde_begin; |
118 | char *dw_fde_current_label; | |
119 | char *dw_fde_end; | |
120 | dw_cfi_ref dw_fde_cfi; | |
121 | } | |
a3f97cbb JW |
122 | dw_fde_node; |
123 | ||
a3f97cbb JW |
124 | /* Maximum size (in bytes) of an artificially generated label. */ |
125 | #define MAX_ARTIFICIAL_LABEL_BYTES 30 | |
126 | ||
127 | /* Make sure we know the sizes of the various types dwarf can describe. These | |
128 | are only defaults. If the sizes are different for your target, you should | |
129 | override these values by defining the appropriate symbols in your tm.h | |
130 | file. */ | |
71dfc51f | 131 | |
a3f97cbb JW |
132 | #ifndef CHAR_TYPE_SIZE |
133 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
134 | #endif | |
a3f97cbb | 135 | #ifndef PTR_SIZE |
a9d38797 | 136 | #define PTR_SIZE (POINTER_SIZE / BITS_PER_UNIT) |
a3f97cbb JW |
137 | #endif |
138 | ||
7e23cb16 JM |
139 | /* The size in bytes of a DWARF field indicating an offset or length |
140 | relative to a debug info section, specified to be 4 bytes in the DWARF-2 | |
141 | specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */ | |
71dfc51f | 142 | |
7e23cb16 JM |
143 | #ifndef DWARF_OFFSET_SIZE |
144 | #define DWARF_OFFSET_SIZE 4 | |
145 | #endif | |
146 | ||
9a666dda JM |
147 | #define DWARF_VERSION 2 |
148 | ||
7e23cb16 JM |
149 | /* Round SIZE up to the nearest BOUNDARY. */ |
150 | #define DWARF_ROUND(SIZE,BOUNDARY) \ | |
151 | (((SIZE) + (BOUNDARY) - 1) & ~((BOUNDARY) - 1)) | |
a3f97cbb | 152 | |
a3f97cbb | 153 | /* Offsets recorded in opcodes are a multiple of this alignment factor. */ |
469ac993 JM |
154 | #ifdef STACK_GROWS_DOWNWARD |
155 | #define DWARF_CIE_DATA_ALIGNMENT (-UNITS_PER_WORD) | |
156 | #else | |
157 | #define DWARF_CIE_DATA_ALIGNMENT UNITS_PER_WORD | |
158 | #endif | |
a3f97cbb | 159 | |
3f76745e JM |
160 | /* A pointer to the base of a table that contains frame description |
161 | information for each routine. */ | |
162 | static dw_fde_ref fde_table; | |
a3f97cbb | 163 | |
3f76745e JM |
164 | /* Number of elements currently allocated for fde_table. */ |
165 | static unsigned fde_table_allocated; | |
a94dbf2c | 166 | |
3f76745e JM |
167 | /* Number of elements in fde_table currently in use. */ |
168 | static unsigned fde_table_in_use; | |
a3f97cbb | 169 | |
3f76745e JM |
170 | /* Size (in elements) of increments by which we may expand the |
171 | fde_table. */ | |
172 | #define FDE_TABLE_INCREMENT 256 | |
a3f97cbb | 173 | |
a94dbf2c JM |
174 | /* A list of call frame insns for the CIE. */ |
175 | static dw_cfi_ref cie_cfi_head; | |
176 | ||
a3f97cbb JW |
177 | /* The number of the current function definition for which debugging |
178 | information is being generated. These numbers range from 1 up to the | |
179 | maximum number of function definitions contained within the current | |
180 | compilation unit. These numbers are used to create unique label id's | |
181 | unique to each function definition. */ | |
4f988ea2 | 182 | static unsigned current_funcdef_number = 0; |
a3f97cbb JW |
183 | |
184 | /* Some DWARF extensions (e.g., MIPS/SGI) implement a subprogram | |
185 | attribute that accelerates the lookup of the FDE associated | |
186 | with the subprogram. This variable holds the table index of the FDE | |
187 | associated with the current function (body) definition. */ | |
188 | static unsigned current_funcdef_fde; | |
189 | ||
a3f97cbb | 190 | /* Forward declarations for functions defined in this file. */ |
71dfc51f RK |
191 | |
192 | static char *stripattributes PROTO((char *)); | |
3f76745e JM |
193 | static char *dwarf_cfi_name PROTO((unsigned)); |
194 | static dw_cfi_ref new_cfi PROTO((void)); | |
195 | static void add_cfi PROTO((dw_cfi_ref *, dw_cfi_ref)); | |
71dfc51f RK |
196 | static unsigned long size_of_uleb128 PROTO((unsigned long)); |
197 | static unsigned long size_of_sleb128 PROTO((long)); | |
71dfc51f RK |
198 | static void output_uleb128 PROTO((unsigned long)); |
199 | static void output_sleb128 PROTO((long)); | |
71dfc51f RK |
200 | static void add_fde_cfi PROTO((char *, dw_cfi_ref)); |
201 | static void lookup_cfa_1 PROTO((dw_cfi_ref, unsigned long *, | |
202 | long *)); | |
203 | static void lookup_cfa PROTO((unsigned long *, long *)); | |
204 | static void reg_save PROTO((char *, unsigned, unsigned, | |
205 | long)); | |
206 | static void initial_return_save PROTO((rtx)); | |
71dfc51f | 207 | static void output_cfi PROTO((dw_cfi_ref, dw_fde_ref)); |
3f76745e | 208 | static void output_call_frame_info PROTO((int)); |
71dfc51f | 209 | static unsigned reg_number PROTO((rtx)); |
1ad4f46b | 210 | static void dwarf2out_stack_adjust PROTO((rtx)); |
a3f97cbb JW |
211 | |
212 | /* Definitions of defaults for assembler-dependent names of various | |
213 | pseudo-ops and section names. | |
214 | Theses may be overridden in the tm.h file (if necessary) for a particular | |
215 | assembler. */ | |
71dfc51f | 216 | |
0021b564 | 217 | #ifdef OBJECT_FORMAT_ELF |
a3f97cbb JW |
218 | #ifndef UNALIGNED_SHORT_ASM_OP |
219 | #define UNALIGNED_SHORT_ASM_OP ".2byte" | |
220 | #endif | |
221 | #ifndef UNALIGNED_INT_ASM_OP | |
222 | #define UNALIGNED_INT_ASM_OP ".4byte" | |
223 | #endif | |
7e23cb16 JM |
224 | #ifndef UNALIGNED_DOUBLE_INT_ASM_OP |
225 | #define UNALIGNED_DOUBLE_INT_ASM_OP ".8byte" | |
226 | #endif | |
0021b564 JM |
227 | #endif /* OBJECT_FORMAT_ELF */ |
228 | ||
a3f97cbb JW |
229 | #ifndef ASM_BYTE_OP |
230 | #define ASM_BYTE_OP ".byte" | |
231 | #endif | |
232 | ||
7e23cb16 JM |
233 | /* Data and reference forms for relocatable data. */ |
234 | #define DW_FORM_data (DWARF_OFFSET_SIZE == 8 ? DW_FORM_data8 : DW_FORM_data4) | |
235 | #define DW_FORM_ref (DWARF_OFFSET_SIZE == 8 ? DW_FORM_ref8 : DW_FORM_ref4) | |
236 | ||
a3f97cbb JW |
237 | /* Pseudo-op for defining a new section. */ |
238 | #ifndef SECTION_ASM_OP | |
239 | #define SECTION_ASM_OP ".section" | |
240 | #endif | |
241 | ||
242 | /* The default format used by the ASM_OUTPUT_SECTION macro (see below) to | |
243 | print the SECTION_ASM_OP and the section name. The default here works for | |
244 | almost all svr4 assemblers, except for the sparc, where the section name | |
245 | must be enclosed in double quotes. (See sparcv4.h). */ | |
246 | #ifndef SECTION_FORMAT | |
c53aa195 JM |
247 | #ifdef PUSHSECTION_FORMAT |
248 | #define SECTION_FORMAT PUSHSECTION_FORMAT | |
249 | #else | |
250 | #define SECTION_FORMAT "\t%s\t%s\n" | |
251 | #endif | |
a3f97cbb JW |
252 | #endif |
253 | ||
a3f97cbb JW |
254 | #ifndef FRAME_SECTION |
255 | #define FRAME_SECTION ".debug_frame" | |
256 | #endif | |
a3f97cbb | 257 | |
5c90448c JM |
258 | #ifndef FUNC_BEGIN_LABEL |
259 | #define FUNC_BEGIN_LABEL "LFB" | |
a3f97cbb | 260 | #endif |
5c90448c JM |
261 | #ifndef FUNC_END_LABEL |
262 | #define FUNC_END_LABEL "LFE" | |
a3f97cbb | 263 | #endif |
a6ab3aad JM |
264 | #define CIE_AFTER_SIZE_LABEL "LSCIE" |
265 | #define CIE_END_LABEL "LECIE" | |
2ed2af28 | 266 | #define CIE_LENGTH_LABEL "LLCIE" |
a6ab3aad JM |
267 | #define FDE_AFTER_SIZE_LABEL "LSFDE" |
268 | #define FDE_END_LABEL "LEFDE" | |
2ed2af28 | 269 | #define FDE_LENGTH_LABEL "LLFDE" |
a3f97cbb | 270 | |
a3f97cbb JW |
271 | /* Definitions of defaults for various types of primitive assembly language |
272 | output operations. These may be overridden from within the tm.h file, | |
956d6950 | 273 | but typically, that is unnecessary. */ |
71dfc51f | 274 | |
a3f97cbb JW |
275 | #ifndef ASM_OUTPUT_SECTION |
276 | #define ASM_OUTPUT_SECTION(FILE, SECTION) \ | |
277 | fprintf ((FILE), SECTION_FORMAT, SECTION_ASM_OP, SECTION) | |
278 | #endif | |
279 | ||
0021b564 JM |
280 | #ifndef ASM_OUTPUT_DWARF_DATA1 |
281 | #define ASM_OUTPUT_DWARF_DATA1(FILE,VALUE) \ | |
32bd96ff | 282 | fprintf ((FILE), "\t%s\t0x%x", ASM_BYTE_OP, (unsigned) (VALUE)) |
0021b564 JM |
283 | #endif |
284 | ||
bb727b5a JM |
285 | #ifndef ASM_OUTPUT_DWARF_DELTA1 |
286 | #define ASM_OUTPUT_DWARF_DELTA1(FILE,LABEL1,LABEL2) \ | |
287 | do { fprintf ((FILE), "\t%s\t", ASM_BYTE_OP); \ | |
288 | assemble_name (FILE, LABEL1); \ | |
289 | fprintf (FILE, "-"); \ | |
290 | assemble_name (FILE, LABEL2); \ | |
291 | } while (0) | |
292 | #endif | |
293 | ||
0021b564 JM |
294 | #ifdef UNALIGNED_INT_ASM_OP |
295 | ||
296 | #ifndef UNALIGNED_OFFSET_ASM_OP | |
297 | #define UNALIGNED_OFFSET_ASM_OP \ | |
298 | (DWARF_OFFSET_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
299 | #endif | |
300 | ||
301 | #ifndef UNALIGNED_WORD_ASM_OP | |
302 | #define UNALIGNED_WORD_ASM_OP \ | |
303 | (PTR_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
304 | #endif | |
305 | ||
a3f97cbb JW |
306 | #ifndef ASM_OUTPUT_DWARF_DELTA2 |
307 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
308 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_SHORT_ASM_OP); \ | |
309 | assemble_name (FILE, LABEL1); \ | |
310 | fprintf (FILE, "-"); \ | |
311 | assemble_name (FILE, LABEL2); \ | |
312 | } while (0) | |
313 | #endif | |
314 | ||
315 | #ifndef ASM_OUTPUT_DWARF_DELTA4 | |
316 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
317 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
318 | assemble_name (FILE, LABEL1); \ | |
319 | fprintf (FILE, "-"); \ | |
320 | assemble_name (FILE, LABEL2); \ | |
321 | } while (0) | |
322 | #endif | |
323 | ||
7e23cb16 JM |
324 | #ifndef ASM_OUTPUT_DWARF_DELTA |
325 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
326 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
327 | assemble_name (FILE, LABEL1); \ | |
328 | fprintf (FILE, "-"); \ | |
329 | assemble_name (FILE, LABEL2); \ | |
330 | } while (0) | |
331 | #endif | |
332 | ||
333 | #ifndef ASM_OUTPUT_DWARF_ADDR_DELTA | |
334 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
335 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ | |
336 | assemble_name (FILE, LABEL1); \ | |
337 | fprintf (FILE, "-"); \ | |
338 | assemble_name (FILE, LABEL2); \ | |
339 | } while (0) | |
340 | #endif | |
341 | ||
a3f97cbb JW |
342 | #ifndef ASM_OUTPUT_DWARF_ADDR |
343 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
7e23cb16 | 344 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ |
a3f97cbb JW |
345 | assemble_name (FILE, LABEL); \ |
346 | } while (0) | |
347 | #endif | |
348 | ||
cba96cb7 JW |
349 | /* ??? This macro takes an RTX in dwarfout.c and a string in dwarf2out.c. |
350 | We resolve the conflict by creating a new macro ASM_OUTPUT_DWARF2_ADDR_CONST | |
351 | for ports that want to support both DWARF1 and DWARF2. This needs a better | |
352 | solution. See also the comments in sparc/sp64-elf.h. */ | |
353 | #ifdef ASM_OUTPUT_DWARF2_ADDR_CONST | |
354 | #undef ASM_OUTPUT_DWARF_ADDR_CONST | |
355 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,ADDR) \ | |
356 | ASM_OUTPUT_DWARF2_ADDR_CONST (FILE, ADDR) | |
357 | #endif | |
358 | ||
a3f97cbb JW |
359 | #ifndef ASM_OUTPUT_DWARF_ADDR_CONST |
360 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,ADDR) \ | |
7e23cb16 JM |
361 | fprintf ((FILE), "\t%s\t%s", UNALIGNED_WORD_ASM_OP, (ADDR)) |
362 | #endif | |
363 | ||
7bb9fb0e JM |
364 | #ifndef ASM_OUTPUT_DWARF_OFFSET4 |
365 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ | |
366 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
367 | assemble_name (FILE, LABEL); \ | |
368 | } while (0) | |
369 | #endif | |
370 | ||
7e23cb16 JM |
371 | #ifndef ASM_OUTPUT_DWARF_OFFSET |
372 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ | |
373 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
374 | assemble_name (FILE, LABEL); \ | |
375 | } while (0) | |
a3f97cbb JW |
376 | #endif |
377 | ||
a3f97cbb JW |
378 | #ifndef ASM_OUTPUT_DWARF_DATA2 |
379 | #define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \ | |
32bd96ff | 380 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_SHORT_ASM_OP, (unsigned) (VALUE)) |
a3f97cbb JW |
381 | #endif |
382 | ||
383 | #ifndef ASM_OUTPUT_DWARF_DATA4 | |
384 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
32bd96ff | 385 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, (unsigned) (VALUE)) |
a3f97cbb JW |
386 | #endif |
387 | ||
7e23cb16 JM |
388 | #ifndef ASM_OUTPUT_DWARF_DATA |
389 | #define ASM_OUTPUT_DWARF_DATA(FILE,VALUE) \ | |
390 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_OFFSET_ASM_OP, \ | |
32bd96ff | 391 | (unsigned long) (VALUE)) |
7e23cb16 JM |
392 | #endif |
393 | ||
394 | #ifndef ASM_OUTPUT_DWARF_ADDR_DATA | |
395 | #define ASM_OUTPUT_DWARF_ADDR_DATA(FILE,VALUE) \ | |
396 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_WORD_ASM_OP, \ | |
32bd96ff | 397 | (unsigned long) (VALUE)) |
7e23cb16 JM |
398 | #endif |
399 | ||
a3f97cbb JW |
400 | #ifndef ASM_OUTPUT_DWARF_DATA8 |
401 | #define ASM_OUTPUT_DWARF_DATA8(FILE,HIGH_VALUE,LOW_VALUE) \ | |
402 | do { \ | |
403 | if (WORDS_BIG_ENDIAN) \ | |
404 | { \ | |
32bd96ff JM |
405 | fprintf ((FILE), "\t%s\t0x%lx\n", UNALIGNED_INT_ASM_OP, (HIGH_VALUE));\ |
406 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_INT_ASM_OP, (LOW_VALUE));\ | |
a3f97cbb JW |
407 | } \ |
408 | else \ | |
409 | { \ | |
32bd96ff JM |
410 | fprintf ((FILE), "\t%s\t0x%lx\n", UNALIGNED_INT_ASM_OP, (LOW_VALUE)); \ |
411 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_INT_ASM_OP, (HIGH_VALUE)); \ | |
a3f97cbb JW |
412 | } \ |
413 | } while (0) | |
414 | #endif | |
415 | ||
0021b564 JM |
416 | #else /* UNALIGNED_INT_ASM_OP */ |
417 | ||
418 | /* We don't have unaligned support, let's hope the normal output works for | |
419 | .debug_frame. */ | |
420 | ||
421 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
38a448ca | 422 | assemble_integer (gen_rtx_SYMBOL_REF (Pmode, LABEL), PTR_SIZE, 1) |
0021b564 | 423 | |
7bb9fb0e | 424 | #define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \ |
38a448ca | 425 | assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1) |
7bb9fb0e | 426 | |
0021b564 | 427 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ |
38a448ca | 428 | assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1) |
0021b564 JM |
429 | |
430 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
38a448ca RH |
431 | assemble_integer (gen_rtx_MINUS (HImode, \ |
432 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ | |
433 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 JM |
434 | 2, 1) |
435 | ||
436 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
38a448ca RH |
437 | assemble_integer (gen_rtx_MINUS (SImode, \ |
438 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ | |
439 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 JM |
440 | 4, 1) |
441 | ||
442 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
38a448ca RH |
443 | assemble_integer (gen_rtx_MINUS (Pmode, \ |
444 | gen_rtx_SYMBOL_REF (Pmode, LABEL1), \ | |
445 | gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \ | |
0021b564 JM |
446 | PTR_SIZE, 1) |
447 | ||
448 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
449 | ASM_OUTPUT_DWARF_DELTA4 (FILE,LABEL1,LABEL2) | |
450 | ||
451 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
452 | assemble_integer (GEN_INT (VALUE), 4, 1) | |
453 | ||
454 | #endif /* UNALIGNED_INT_ASM_OP */ | |
455 | ||
2ed2af28 PDM |
456 | #ifdef SET_ASM_OP |
457 | #ifndef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL | |
7bb9fb0e JM |
458 | #define ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL(FILE, SY, HI, LO) \ |
459 | do { \ | |
460 | fprintf (FILE, "\t%s\t", SET_ASM_OP); \ | |
461 | assemble_name (FILE, SY); \ | |
462 | fputc (',', FILE); \ | |
463 | assemble_name (FILE, HI); \ | |
464 | fputc ('-', FILE); \ | |
465 | assemble_name (FILE, LO); \ | |
466 | } while (0) | |
2ed2af28 PDM |
467 | #endif |
468 | #endif /* SET_ASM_OP */ | |
469 | ||
a6ab3aad | 470 | /* This is similar to the default ASM_OUTPUT_ASCII, except that no trailing |
2ed2af28 | 471 | newline is produced. When flag_debug_asm is asserted, we add commentary |
a6ab3aad JM |
472 | at the end of the line, so we must avoid output of a newline here. */ |
473 | #ifndef ASM_OUTPUT_DWARF_STRING | |
474 | #define ASM_OUTPUT_DWARF_STRING(FILE,P) \ | |
475 | do { \ | |
476 | register int slen = strlen(P); \ | |
477 | register char *p = (P); \ | |
478 | register int i; \ | |
479 | fprintf (FILE, "\t.ascii \""); \ | |
480 | for (i = 0; i < slen; i++) \ | |
481 | { \ | |
482 | register int c = p[i]; \ | |
483 | if (c == '\"' || c == '\\') \ | |
484 | putc ('\\', FILE); \ | |
485 | if (c >= ' ' && c < 0177) \ | |
486 | putc (c, FILE); \ | |
487 | else \ | |
488 | { \ | |
489 | fprintf (FILE, "\\%o", c); \ | |
490 | } \ | |
491 | } \ | |
492 | fprintf (FILE, "\\0\""); \ | |
493 | } \ | |
494 | while (0) | |
495 | #endif | |
496 | ||
c8cc5c4a | 497 | /* The DWARF 2 CFA column which tracks the return address. Normally this |
a94dbf2c JM |
498 | is the column for PC, or the first column after all of the hard |
499 | registers. */ | |
c8cc5c4a | 500 | #ifndef DWARF_FRAME_RETURN_COLUMN |
a94dbf2c JM |
501 | #ifdef PC_REGNUM |
502 | #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM) | |
503 | #else | |
466446b0 | 504 | #define DWARF_FRAME_RETURN_COLUMN FIRST_PSEUDO_REGISTER |
a94dbf2c | 505 | #endif |
c8cc5c4a JM |
506 | #endif |
507 | ||
508 | /* The mapping from gcc register number to DWARF 2 CFA column number. By | |
469ac993 | 509 | default, we just provide columns for all registers. */ |
c8cc5c4a | 510 | #ifndef DWARF_FRAME_REGNUM |
469ac993 | 511 | #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG) |
c8cc5c4a | 512 | #endif |
3f76745e | 513 | |
0021b564 JM |
514 | /* Hook used by __throw. */ |
515 | ||
516 | rtx | |
517 | expand_builtin_dwarf_fp_regnum () | |
518 | { | |
519 | return GEN_INT (DWARF_FRAME_REGNUM (HARD_FRAME_POINTER_REGNUM)); | |
520 | } | |
521 | ||
a6ab3aad JM |
522 | /* The offset from the incoming value of %sp to the top of the stack frame |
523 | for the current function. */ | |
524 | #ifndef INCOMING_FRAME_SP_OFFSET | |
525 | #define INCOMING_FRAME_SP_OFFSET 0 | |
526 | #endif | |
527 | ||
71dfc51f | 528 | /* Return a pointer to a copy of the section string name S with all |
bf20f341 | 529 | attributes stripped off, and an asterisk prepended (for assemble_name). */ |
71dfc51f RK |
530 | |
531 | static inline char * | |
a3f97cbb | 532 | stripattributes (s) |
71dfc51f | 533 | char *s; |
a3f97cbb | 534 | { |
bf20f341 | 535 | char *stripped = xmalloc (strlen (s) + 2); |
71dfc51f RK |
536 | char *p = stripped; |
537 | ||
bf20f341 JW |
538 | *p++ = '*'; |
539 | ||
540 | while (*s && *s != ',') | |
541 | *p++ = *s++; | |
71dfc51f | 542 | |
a3f97cbb JW |
543 | *p = '\0'; |
544 | return stripped; | |
545 | } | |
546 | ||
3f76745e | 547 | /* Return the register number described by a given RTL node. */ |
71dfc51f | 548 | |
3f76745e JM |
549 | static unsigned |
550 | reg_number (rtl) | |
551 | register rtx rtl; | |
a3f97cbb | 552 | { |
3f76745e | 553 | register unsigned regno = REGNO (rtl); |
a3f97cbb | 554 | |
3f76745e | 555 | if (regno >= FIRST_PSEUDO_REGISTER) |
a3f97cbb | 556 | { |
3f76745e JM |
557 | warning ("internal regno botch: regno = %d\n", regno); |
558 | regno = 0; | |
559 | } | |
a3f97cbb | 560 | |
3f76745e JM |
561 | regno = DBX_REGISTER_NUMBER (regno); |
562 | return regno; | |
563 | } | |
a3f97cbb | 564 | |
2f3ca9e7 JM |
565 | struct reg_size_range |
566 | { | |
567 | int beg; | |
568 | int end; | |
569 | int size; | |
570 | }; | |
571 | ||
572 | /* Given a register number in REG_TREE, return an rtx for its size in bytes. | |
573 | We do this in kind of a roundabout way, by building up a list of | |
574 | register size ranges and seeing where our register falls in one of those | |
575 | ranges. We need to do it this way because REG_TREE is not a constant, | |
576 | and the target macros were not designed to make this task easy. */ | |
577 | ||
578 | rtx | |
579 | expand_builtin_dwarf_reg_size (reg_tree, target) | |
580 | tree reg_tree; | |
581 | rtx target; | |
582 | { | |
31c8581d | 583 | enum machine_mode mode; |
d1485032 | 584 | int size; |
2f3ca9e7 JM |
585 | struct reg_size_range ranges[5]; |
586 | tree t, t2; | |
587 | ||
d1485032 JM |
588 | int i = 0; |
589 | int n_ranges = 0; | |
590 | int last_size = -1; | |
2f3ca9e7 | 591 | |
d1485032 | 592 | for (; i < FIRST_PSEUDO_REGISTER; ++i) |
2f3ca9e7 | 593 | { |
d1485032 JM |
594 | /* The return address is out of order on the MIPS, and we don't use |
595 | copy_reg for it anyway, so we don't care here how large it is. */ | |
596 | if (DWARF_FRAME_REGNUM (i) == DWARF_FRAME_RETURN_COLUMN) | |
597 | continue; | |
598 | ||
31c8581d | 599 | mode = reg_raw_mode[i]; |
e5e809f4 | 600 | |
31c8581d JW |
601 | /* CCmode is arbitrarily given a size of 4 bytes. It is more useful |
602 | to use the same size as word_mode, since that reduces the number | |
603 | of ranges we need. It should not matter, since the result should | |
604 | never be used for a condition code register anyways. */ | |
e5e809f4 | 605 | if (GET_MODE_CLASS (mode) == MODE_CC) |
31c8581d | 606 | mode = word_mode; |
e5e809f4 | 607 | |
31c8581d JW |
608 | size = GET_MODE_SIZE (mode); |
609 | ||
e5e809f4 JL |
610 | /* If this register is not valid in the specified mode and |
611 | we have a previous size, use that for the size of this | |
612 | register to avoid making junk tiny ranges. */ | |
613 | if (! HARD_REGNO_MODE_OK (i, mode) && last_size != -1) | |
614 | size = last_size; | |
615 | ||
d1485032 | 616 | if (size != last_size) |
2f3ca9e7 | 617 | { |
2f3ca9e7 | 618 | ranges[n_ranges].beg = i; |
e5e809f4 | 619 | ranges[n_ranges].size = last_size = size; |
2f3ca9e7 | 620 | ++n_ranges; |
3a88cbd1 JL |
621 | if (n_ranges >= 5) |
622 | abort (); | |
2f3ca9e7 | 623 | } |
d1485032 | 624 | ranges[n_ranges-1].end = i; |
2f3ca9e7 | 625 | } |
2f3ca9e7 JM |
626 | |
627 | /* The usual case: fp regs surrounded by general regs. */ | |
628 | if (n_ranges == 3 && ranges[0].size == ranges[2].size) | |
629 | { | |
3a88cbd1 JL |
630 | if ((DWARF_FRAME_REGNUM (ranges[1].end) |
631 | - DWARF_FRAME_REGNUM (ranges[1].beg)) | |
632 | != ranges[1].end - ranges[1].beg) | |
633 | abort (); | |
2f3ca9e7 JM |
634 | t = fold (build (GE_EXPR, integer_type_node, reg_tree, |
635 | build_int_2 (DWARF_FRAME_REGNUM (ranges[1].beg), 0))); | |
636 | t2 = fold (build (LE_EXPR, integer_type_node, reg_tree, | |
637 | build_int_2 (DWARF_FRAME_REGNUM (ranges[1].end), 0))); | |
638 | t = fold (build (TRUTH_ANDIF_EXPR, integer_type_node, t, t2)); | |
639 | t = fold (build (COND_EXPR, integer_type_node, t, | |
640 | build_int_2 (ranges[1].size, 0), | |
641 | build_int_2 (ranges[0].size, 0))); | |
642 | } | |
643 | else | |
644 | { | |
69fba037 JC |
645 | /* Initialize last_end to be larger than any possible |
646 | DWARF_FRAME_REGNUM. */ | |
647 | int last_end = 0x7fffffff; | |
2f3ca9e7 JM |
648 | --n_ranges; |
649 | t = build_int_2 (ranges[n_ranges].size, 0); | |
913f68c1 | 650 | do |
2f3ca9e7 | 651 | { |
913f68c1 JC |
652 | int beg = DWARF_FRAME_REGNUM (ranges[n_ranges].beg); |
653 | int end = DWARF_FRAME_REGNUM (ranges[n_ranges].end); | |
654 | if (beg < 0) | |
655 | continue; | |
656 | if (end >= last_end) | |
3a88cbd1 | 657 | abort (); |
913f68c1 JC |
658 | last_end = end; |
659 | if (end - beg != ranges[n_ranges].end - ranges[n_ranges].beg) | |
3a88cbd1 | 660 | abort (); |
2f3ca9e7 | 661 | t2 = fold (build (LE_EXPR, integer_type_node, reg_tree, |
913f68c1 | 662 | build_int_2 (end, 0))); |
2f3ca9e7 JM |
663 | t = fold (build (COND_EXPR, integer_type_node, t2, |
664 | build_int_2 (ranges[n_ranges].size, 0), t)); | |
665 | } | |
c9ab1458 | 666 | while (--n_ranges >= 0); |
2f3ca9e7 JM |
667 | } |
668 | return expand_expr (t, target, Pmode, 0); | |
669 | } | |
670 | ||
3f76745e | 671 | /* Convert a DWARF call frame info. operation to its string name */ |
a3f97cbb | 672 | |
3f76745e JM |
673 | static char * |
674 | dwarf_cfi_name (cfi_opc) | |
675 | register unsigned cfi_opc; | |
676 | { | |
677 | switch (cfi_opc) | |
678 | { | |
679 | case DW_CFA_advance_loc: | |
680 | return "DW_CFA_advance_loc"; | |
681 | case DW_CFA_offset: | |
682 | return "DW_CFA_offset"; | |
683 | case DW_CFA_restore: | |
684 | return "DW_CFA_restore"; | |
685 | case DW_CFA_nop: | |
686 | return "DW_CFA_nop"; | |
687 | case DW_CFA_set_loc: | |
688 | return "DW_CFA_set_loc"; | |
689 | case DW_CFA_advance_loc1: | |
690 | return "DW_CFA_advance_loc1"; | |
691 | case DW_CFA_advance_loc2: | |
692 | return "DW_CFA_advance_loc2"; | |
693 | case DW_CFA_advance_loc4: | |
694 | return "DW_CFA_advance_loc4"; | |
695 | case DW_CFA_offset_extended: | |
696 | return "DW_CFA_offset_extended"; | |
697 | case DW_CFA_restore_extended: | |
698 | return "DW_CFA_restore_extended"; | |
699 | case DW_CFA_undefined: | |
700 | return "DW_CFA_undefined"; | |
701 | case DW_CFA_same_value: | |
702 | return "DW_CFA_same_value"; | |
703 | case DW_CFA_register: | |
704 | return "DW_CFA_register"; | |
705 | case DW_CFA_remember_state: | |
706 | return "DW_CFA_remember_state"; | |
707 | case DW_CFA_restore_state: | |
708 | return "DW_CFA_restore_state"; | |
709 | case DW_CFA_def_cfa: | |
710 | return "DW_CFA_def_cfa"; | |
711 | case DW_CFA_def_cfa_register: | |
712 | return "DW_CFA_def_cfa_register"; | |
713 | case DW_CFA_def_cfa_offset: | |
714 | return "DW_CFA_def_cfa_offset"; | |
c53aa195 | 715 | |
3f76745e JM |
716 | /* SGI/MIPS specific */ |
717 | case DW_CFA_MIPS_advance_loc8: | |
718 | return "DW_CFA_MIPS_advance_loc8"; | |
c53aa195 JM |
719 | |
720 | /* GNU extensions */ | |
721 | case DW_CFA_GNU_window_save: | |
722 | return "DW_CFA_GNU_window_save"; | |
0021b564 JM |
723 | case DW_CFA_GNU_args_size: |
724 | return "DW_CFA_GNU_args_size"; | |
c53aa195 | 725 | |
3f76745e JM |
726 | default: |
727 | return "DW_CFA_<unknown>"; | |
728 | } | |
729 | } | |
a3f97cbb | 730 | |
3f76745e | 731 | /* Return a pointer to a newly allocated Call Frame Instruction. */ |
71dfc51f | 732 | |
3f76745e JM |
733 | static inline dw_cfi_ref |
734 | new_cfi () | |
735 | { | |
736 | register dw_cfi_ref cfi = (dw_cfi_ref) xmalloc (sizeof (dw_cfi_node)); | |
71dfc51f | 737 | |
3f76745e JM |
738 | cfi->dw_cfi_next = NULL; |
739 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = 0; | |
740 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = 0; | |
a3f97cbb | 741 | |
3f76745e JM |
742 | return cfi; |
743 | } | |
a3f97cbb | 744 | |
3f76745e | 745 | /* Add a Call Frame Instruction to list of instructions. */ |
a3f97cbb | 746 | |
3f76745e JM |
747 | static inline void |
748 | add_cfi (list_head, cfi) | |
749 | register dw_cfi_ref *list_head; | |
750 | register dw_cfi_ref cfi; | |
751 | { | |
752 | register dw_cfi_ref *p; | |
a3f97cbb | 753 | |
3f76745e JM |
754 | /* Find the end of the chain. */ |
755 | for (p = list_head; (*p) != NULL; p = &(*p)->dw_cfi_next) | |
756 | ; | |
757 | ||
758 | *p = cfi; | |
a3f97cbb JW |
759 | } |
760 | ||
3f76745e | 761 | /* Generate a new label for the CFI info to refer to. */ |
71dfc51f | 762 | |
c53aa195 | 763 | char * |
3f76745e | 764 | dwarf2out_cfi_label () |
a3f97cbb | 765 | { |
3f76745e JM |
766 | static char label[20]; |
767 | static unsigned long label_num = 0; | |
768 | ||
769 | ASM_GENERATE_INTERNAL_LABEL (label, "LCFI", label_num++); | |
770 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
771 | ||
772 | return label; | |
a3f97cbb JW |
773 | } |
774 | ||
3f76745e JM |
775 | /* Add CFI to the current fde at the PC value indicated by LABEL if specified, |
776 | or to the CIE if LABEL is NULL. */ | |
71dfc51f | 777 | |
3f76745e JM |
778 | static void |
779 | add_fde_cfi (label, cfi) | |
780 | register char *label; | |
781 | register dw_cfi_ref cfi; | |
a3f97cbb | 782 | { |
3f76745e JM |
783 | if (label) |
784 | { | |
785 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; | |
a3f97cbb | 786 | |
3f76745e JM |
787 | if (*label == 0) |
788 | label = dwarf2out_cfi_label (); | |
71dfc51f | 789 | |
3f76745e JM |
790 | if (fde->dw_fde_current_label == NULL |
791 | || strcmp (label, fde->dw_fde_current_label) != 0) | |
792 | { | |
793 | register dw_cfi_ref xcfi; | |
a3f97cbb | 794 | |
3f76745e | 795 | fde->dw_fde_current_label = label = xstrdup (label); |
71dfc51f | 796 | |
3f76745e JM |
797 | /* Set the location counter to the new label. */ |
798 | xcfi = new_cfi (); | |
799 | xcfi->dw_cfi_opc = DW_CFA_advance_loc4; | |
800 | xcfi->dw_cfi_oprnd1.dw_cfi_addr = label; | |
801 | add_cfi (&fde->dw_fde_cfi, xcfi); | |
802 | } | |
71dfc51f | 803 | |
3f76745e JM |
804 | add_cfi (&fde->dw_fde_cfi, cfi); |
805 | } | |
806 | ||
807 | else | |
808 | add_cfi (&cie_cfi_head, cfi); | |
a3f97cbb JW |
809 | } |
810 | ||
3f76745e | 811 | /* Subroutine of lookup_cfa. */ |
71dfc51f | 812 | |
3f76745e JM |
813 | static inline void |
814 | lookup_cfa_1 (cfi, regp, offsetp) | |
815 | register dw_cfi_ref cfi; | |
816 | register unsigned long *regp; | |
817 | register long *offsetp; | |
a3f97cbb | 818 | { |
3f76745e JM |
819 | switch (cfi->dw_cfi_opc) |
820 | { | |
821 | case DW_CFA_def_cfa_offset: | |
822 | *offsetp = cfi->dw_cfi_oprnd1.dw_cfi_offset; | |
823 | break; | |
824 | case DW_CFA_def_cfa_register: | |
825 | *regp = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; | |
826 | break; | |
827 | case DW_CFA_def_cfa: | |
828 | *regp = cfi->dw_cfi_oprnd1.dw_cfi_reg_num; | |
829 | *offsetp = cfi->dw_cfi_oprnd2.dw_cfi_offset; | |
830 | break; | |
e9a25f70 JL |
831 | default: |
832 | break; | |
3f76745e | 833 | } |
a3f97cbb JW |
834 | } |
835 | ||
3f76745e | 836 | /* Find the previous value for the CFA. */ |
71dfc51f | 837 | |
3f76745e JM |
838 | static void |
839 | lookup_cfa (regp, offsetp) | |
840 | register unsigned long *regp; | |
841 | register long *offsetp; | |
a3f97cbb | 842 | { |
3f76745e JM |
843 | register dw_cfi_ref cfi; |
844 | ||
845 | *regp = (unsigned long) -1; | |
846 | *offsetp = 0; | |
847 | ||
848 | for (cfi = cie_cfi_head; cfi; cfi = cfi->dw_cfi_next) | |
849 | lookup_cfa_1 (cfi, regp, offsetp); | |
850 | ||
851 | if (fde_table_in_use) | |
a3f97cbb | 852 | { |
3f76745e JM |
853 | register dw_fde_ref fde = &fde_table[fde_table_in_use - 1]; |
854 | for (cfi = fde->dw_fde_cfi; cfi; cfi = cfi->dw_cfi_next) | |
855 | lookup_cfa_1 (cfi, regp, offsetp); | |
a3f97cbb JW |
856 | } |
857 | } | |
858 | ||
3f76745e | 859 | /* The current rule for calculating the DWARF2 canonical frame address. */ |
a6ab3aad | 860 | static unsigned long cfa_reg; |
3f76745e | 861 | static long cfa_offset; |
71dfc51f | 862 | |
3f76745e JM |
863 | /* The register used for saving registers to the stack, and its offset |
864 | from the CFA. */ | |
865 | static unsigned cfa_store_reg; | |
866 | static long cfa_store_offset; | |
867 | ||
0021b564 JM |
868 | /* The running total of the size of arguments pushed onto the stack. */ |
869 | static long args_size; | |
870 | ||
b57d9225 JM |
871 | /* The last args_size we actually output. */ |
872 | static long old_args_size; | |
873 | ||
3f76745e JM |
874 | /* Entry point to update the canonical frame address (CFA). |
875 | LABEL is passed to add_fde_cfi. The value of CFA is now to be | |
876 | calculated from REG+OFFSET. */ | |
877 | ||
878 | void | |
879 | dwarf2out_def_cfa (label, reg, offset) | |
880 | register char *label; | |
881 | register unsigned reg; | |
882 | register long offset; | |
a3f97cbb | 883 | { |
3f76745e JM |
884 | register dw_cfi_ref cfi; |
885 | unsigned long old_reg; | |
886 | long old_offset; | |
887 | ||
5bef9b1f JM |
888 | cfa_reg = reg; |
889 | cfa_offset = offset; | |
890 | if (cfa_store_reg == reg) | |
891 | cfa_store_offset = offset; | |
892 | ||
3f76745e JM |
893 | reg = DWARF_FRAME_REGNUM (reg); |
894 | lookup_cfa (&old_reg, &old_offset); | |
895 | ||
896 | if (reg == old_reg && offset == old_offset) | |
897 | return; | |
898 | ||
899 | cfi = new_cfi (); | |
900 | ||
901 | if (reg == old_reg) | |
a3f97cbb | 902 | { |
3f76745e JM |
903 | cfi->dw_cfi_opc = DW_CFA_def_cfa_offset; |
904 | cfi->dw_cfi_oprnd1.dw_cfi_offset = offset; | |
905 | } | |
a3f97cbb | 906 | |
3f76745e JM |
907 | #ifndef MIPS_DEBUGGING_INFO /* SGI dbx thinks this means no offset. */ |
908 | else if (offset == old_offset && old_reg != (unsigned long) -1) | |
909 | { | |
910 | cfi->dw_cfi_opc = DW_CFA_def_cfa_register; | |
911 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
912 | } | |
913 | #endif | |
a3f97cbb | 914 | |
3f76745e JM |
915 | else |
916 | { | |
917 | cfi->dw_cfi_opc = DW_CFA_def_cfa; | |
918 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
919 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; | |
a3f97cbb | 920 | } |
3f76745e JM |
921 | |
922 | add_fde_cfi (label, cfi); | |
a3f97cbb JW |
923 | } |
924 | ||
3f76745e JM |
925 | /* Add the CFI for saving a register. REG is the CFA column number. |
926 | LABEL is passed to add_fde_cfi. | |
927 | If SREG is -1, the register is saved at OFFSET from the CFA; | |
928 | otherwise it is saved in SREG. */ | |
71dfc51f | 929 | |
3f76745e JM |
930 | static void |
931 | reg_save (label, reg, sreg, offset) | |
932 | register char * label; | |
933 | register unsigned reg; | |
934 | register unsigned sreg; | |
935 | register long offset; | |
a3f97cbb | 936 | { |
3f76745e JM |
937 | register dw_cfi_ref cfi = new_cfi (); |
938 | ||
939 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = reg; | |
940 | ||
85066503 MH |
941 | /* The following comparison is correct. -1 is used to indicate that |
942 | the value isn't a register number. */ | |
943 | if (sreg == (unsigned int) -1) | |
a3f97cbb | 944 | { |
3f76745e JM |
945 | if (reg & ~0x3f) |
946 | /* The register number won't fit in 6 bits, so we have to use | |
947 | the long form. */ | |
948 | cfi->dw_cfi_opc = DW_CFA_offset_extended; | |
949 | else | |
950 | cfi->dw_cfi_opc = DW_CFA_offset; | |
951 | ||
952 | offset /= DWARF_CIE_DATA_ALIGNMENT; | |
3a88cbd1 JL |
953 | if (offset < 0) |
954 | abort (); | |
3f76745e JM |
955 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; |
956 | } | |
957 | else | |
958 | { | |
959 | cfi->dw_cfi_opc = DW_CFA_register; | |
960 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = sreg; | |
961 | } | |
962 | ||
963 | add_fde_cfi (label, cfi); | |
964 | } | |
965 | ||
c53aa195 JM |
966 | /* Add the CFI for saving a register window. LABEL is passed to reg_save. |
967 | This CFI tells the unwinder that it needs to restore the window registers | |
968 | from the previous frame's window save area. | |
969 | ||
970 | ??? Perhaps we should note in the CIE where windows are saved (instead of | |
971 | assuming 0(cfa)) and what registers are in the window. */ | |
972 | ||
973 | void | |
974 | dwarf2out_window_save (label) | |
975 | register char * label; | |
976 | { | |
977 | register dw_cfi_ref cfi = new_cfi (); | |
978 | cfi->dw_cfi_opc = DW_CFA_GNU_window_save; | |
979 | add_fde_cfi (label, cfi); | |
980 | } | |
981 | ||
0021b564 JM |
982 | /* Add a CFI to update the running total of the size of arguments |
983 | pushed onto the stack. */ | |
984 | ||
985 | void | |
986 | dwarf2out_args_size (label, size) | |
987 | char *label; | |
988 | long size; | |
989 | { | |
b57d9225 JM |
990 | register dw_cfi_ref cfi; |
991 | ||
992 | if (size == old_args_size) | |
993 | return; | |
994 | old_args_size = size; | |
995 | ||
996 | cfi = new_cfi (); | |
0021b564 JM |
997 | cfi->dw_cfi_opc = DW_CFA_GNU_args_size; |
998 | cfi->dw_cfi_oprnd1.dw_cfi_offset = size; | |
999 | add_fde_cfi (label, cfi); | |
1000 | } | |
1001 | ||
c53aa195 JM |
1002 | /* Entry point for saving a register to the stack. REG is the GCC register |
1003 | number. LABEL and OFFSET are passed to reg_save. */ | |
3f76745e JM |
1004 | |
1005 | void | |
1006 | dwarf2out_reg_save (label, reg, offset) | |
1007 | register char * label; | |
1008 | register unsigned reg; | |
1009 | register long offset; | |
1010 | { | |
1011 | reg_save (label, DWARF_FRAME_REGNUM (reg), -1, offset); | |
1012 | } | |
1013 | ||
c53aa195 JM |
1014 | /* Entry point for saving the return address in the stack. |
1015 | LABEL and OFFSET are passed to reg_save. */ | |
1016 | ||
1017 | void | |
1018 | dwarf2out_return_save (label, offset) | |
1019 | register char * label; | |
1020 | register long offset; | |
1021 | { | |
1022 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, -1, offset); | |
1023 | } | |
1024 | ||
1025 | /* Entry point for saving the return address in a register. | |
1026 | LABEL and SREG are passed to reg_save. */ | |
1027 | ||
1028 | void | |
1029 | dwarf2out_return_reg (label, sreg) | |
1030 | register char * label; | |
1031 | register unsigned sreg; | |
1032 | { | |
1033 | reg_save (label, DWARF_FRAME_RETURN_COLUMN, sreg, 0); | |
1034 | } | |
1035 | ||
3f76745e JM |
1036 | /* Record the initial position of the return address. RTL is |
1037 | INCOMING_RETURN_ADDR_RTX. */ | |
1038 | ||
1039 | static void | |
1040 | initial_return_save (rtl) | |
1041 | register rtx rtl; | |
1042 | { | |
973838fd | 1043 | unsigned int reg = (unsigned int) -1; |
3f76745e JM |
1044 | long offset = 0; |
1045 | ||
1046 | switch (GET_CODE (rtl)) | |
1047 | { | |
1048 | case REG: | |
1049 | /* RA is in a register. */ | |
1050 | reg = reg_number (rtl); | |
1051 | break; | |
1052 | case MEM: | |
1053 | /* RA is on the stack. */ | |
1054 | rtl = XEXP (rtl, 0); | |
1055 | switch (GET_CODE (rtl)) | |
1056 | { | |
1057 | case REG: | |
3a88cbd1 JL |
1058 | if (REGNO (rtl) != STACK_POINTER_REGNUM) |
1059 | abort (); | |
3f76745e JM |
1060 | offset = 0; |
1061 | break; | |
1062 | case PLUS: | |
3a88cbd1 JL |
1063 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
1064 | abort (); | |
3f76745e JM |
1065 | offset = INTVAL (XEXP (rtl, 1)); |
1066 | break; | |
1067 | case MINUS: | |
3a88cbd1 JL |
1068 | if (REGNO (XEXP (rtl, 0)) != STACK_POINTER_REGNUM) |
1069 | abort (); | |
3f76745e JM |
1070 | offset = -INTVAL (XEXP (rtl, 1)); |
1071 | break; | |
1072 | default: | |
1073 | abort (); | |
1074 | } | |
1075 | break; | |
c53aa195 JM |
1076 | case PLUS: |
1077 | /* The return address is at some offset from any value we can | |
1078 | actually load. For instance, on the SPARC it is in %i7+8. Just | |
1079 | ignore the offset for now; it doesn't matter for unwinding frames. */ | |
3a88cbd1 JL |
1080 | if (GET_CODE (XEXP (rtl, 1)) != CONST_INT) |
1081 | abort (); | |
c53aa195 JM |
1082 | initial_return_save (XEXP (rtl, 0)); |
1083 | return; | |
a3f97cbb | 1084 | default: |
3f76745e | 1085 | abort (); |
a3f97cbb | 1086 | } |
3f76745e | 1087 | |
a6ab3aad | 1088 | reg_save (NULL, DWARF_FRAME_RETURN_COLUMN, reg, offset - cfa_offset); |
a3f97cbb JW |
1089 | } |
1090 | ||
0021b564 JM |
1091 | /* Check INSN to see if it looks like a push or a stack adjustment, and |
1092 | make a note of it if it does. EH uses this information to find out how | |
1093 | much extra space it needs to pop off the stack. */ | |
1094 | ||
1095 | static void | |
1096 | dwarf2out_stack_adjust (insn) | |
1097 | rtx insn; | |
1098 | { | |
0021b564 JM |
1099 | long offset; |
1100 | char *label; | |
1101 | ||
b57d9225 JM |
1102 | if (! asynchronous_exceptions && GET_CODE (insn) == CALL_INSN) |
1103 | { | |
1104 | /* Extract the size of the args from the CALL rtx itself. */ | |
1105 | ||
1106 | insn = PATTERN (insn); | |
1107 | if (GET_CODE (insn) == PARALLEL) | |
1108 | insn = XVECEXP (insn, 0, 0); | |
1109 | if (GET_CODE (insn) == SET) | |
1110 | insn = SET_SRC (insn); | |
1111 | assert (GET_CODE (insn) == CALL); | |
1112 | dwarf2out_args_size ("", INTVAL (XEXP (insn, 1))); | |
1113 | return; | |
1114 | } | |
1115 | ||
1116 | /* If only calls can throw, and we have a frame pointer, | |
1117 | save up adjustments until we see the CALL_INSN. */ | |
1118 | else if (! asynchronous_exceptions | |
1119 | && cfa_reg != STACK_POINTER_REGNUM) | |
1120 | return; | |
1121 | ||
6020d360 | 1122 | if (GET_CODE (insn) == BARRIER) |
0021b564 | 1123 | { |
6020d360 JM |
1124 | /* When we see a BARRIER, we know to reset args_size to 0. Usually |
1125 | the compiler will have already emitted a stack adjustment, but | |
1126 | doesn't bother for calls to noreturn functions. */ | |
1127 | #ifdef STACK_GROWS_DOWNWARD | |
1128 | offset = -args_size; | |
1129 | #else | |
1130 | offset = args_size; | |
1131 | #endif | |
0021b564 | 1132 | } |
6020d360 | 1133 | else if (GET_CODE (PATTERN (insn)) == SET) |
0021b564 | 1134 | { |
6020d360 JM |
1135 | rtx src, dest; |
1136 | enum rtx_code code; | |
1137 | ||
1138 | insn = PATTERN (insn); | |
1139 | src = SET_SRC (insn); | |
1140 | dest = SET_DEST (insn); | |
0021b564 | 1141 | |
6020d360 JM |
1142 | if (dest == stack_pointer_rtx) |
1143 | { | |
1144 | /* (set (reg sp) (plus (reg sp) (const_int))) */ | |
1145 | code = GET_CODE (src); | |
1146 | if (! (code == PLUS || code == MINUS) | |
1147 | || XEXP (src, 0) != stack_pointer_rtx | |
1148 | || GET_CODE (XEXP (src, 1)) != CONST_INT) | |
1149 | return; | |
1150 | ||
1151 | offset = INTVAL (XEXP (src, 1)); | |
1152 | } | |
1153 | else if (GET_CODE (dest) == MEM) | |
1154 | { | |
1155 | /* (set (mem (pre_dec (reg sp))) (foo)) */ | |
1156 | src = XEXP (dest, 0); | |
1157 | code = GET_CODE (src); | |
1158 | ||
1159 | if (! (code == PRE_DEC || code == PRE_INC) | |
1160 | || XEXP (src, 0) != stack_pointer_rtx) | |
1161 | return; | |
1162 | ||
1163 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
1164 | } | |
1165 | else | |
0021b564 JM |
1166 | return; |
1167 | ||
6020d360 JM |
1168 | if (code == PLUS || code == PRE_INC) |
1169 | offset = -offset; | |
0021b564 JM |
1170 | } |
1171 | else | |
1172 | return; | |
1173 | ||
6020d360 JM |
1174 | if (offset == 0) |
1175 | return; | |
1176 | ||
0021b564 JM |
1177 | if (cfa_reg == STACK_POINTER_REGNUM) |
1178 | cfa_offset += offset; | |
1179 | ||
1180 | #ifndef STACK_GROWS_DOWNWARD | |
1181 | offset = -offset; | |
1182 | #endif | |
1183 | args_size += offset; | |
1184 | if (args_size < 0) | |
1185 | args_size = 0; | |
1186 | ||
1187 | label = dwarf2out_cfi_label (); | |
1188 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1189 | dwarf2out_args_size (label, args_size); | |
1190 | } | |
1191 | ||
3f76745e JM |
1192 | /* Record call frame debugging information for INSN, which either |
1193 | sets SP or FP (adjusting how we calculate the frame address) or saves a | |
1194 | register to the stack. If INSN is NULL_RTX, initialize our state. */ | |
71dfc51f | 1195 | |
3f76745e JM |
1196 | void |
1197 | dwarf2out_frame_debug (insn) | |
1198 | rtx insn; | |
a3f97cbb | 1199 | { |
3f76745e JM |
1200 | char *label; |
1201 | rtx src, dest; | |
1202 | long offset; | |
1203 | ||
1204 | /* A temporary register used in adjusting SP or setting up the store_reg. */ | |
1205 | static unsigned cfa_temp_reg; | |
1206 | static long cfa_temp_value; | |
1207 | ||
1208 | if (insn == NULL_RTX) | |
a3f97cbb | 1209 | { |
3f76745e | 1210 | /* Set up state for generating call frame debug info. */ |
a6ab3aad | 1211 | lookup_cfa (&cfa_reg, &cfa_offset); |
3a88cbd1 JL |
1212 | if (cfa_reg != DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM)) |
1213 | abort (); | |
3f76745e | 1214 | cfa_reg = STACK_POINTER_REGNUM; |
a6ab3aad JM |
1215 | cfa_store_reg = cfa_reg; |
1216 | cfa_store_offset = cfa_offset; | |
3f76745e JM |
1217 | cfa_temp_reg = -1; |
1218 | cfa_temp_value = 0; | |
1219 | return; | |
1220 | } | |
1221 | ||
0021b564 JM |
1222 | if (! RTX_FRAME_RELATED_P (insn)) |
1223 | { | |
6020d360 | 1224 | dwarf2out_stack_adjust (insn); |
0021b564 JM |
1225 | return; |
1226 | } | |
1227 | ||
3f76745e JM |
1228 | label = dwarf2out_cfi_label (); |
1229 | ||
07ebc930 RH |
1230 | src = find_reg_note (insn, REG_FRAME_RELATED_EXPR, NULL_RTX); |
1231 | if (src) | |
1232 | insn = XEXP (src, 0); | |
1233 | else | |
1234 | insn = PATTERN (insn); | |
1235 | ||
267c09ab JM |
1236 | /* Assume that in a PARALLEL prologue insn, only the first elt is |
1237 | significant. Currently this is true. */ | |
1238 | if (GET_CODE (insn) == PARALLEL) | |
1239 | insn = XVECEXP (insn, 0, 0); | |
3a88cbd1 JL |
1240 | if (GET_CODE (insn) != SET) |
1241 | abort (); | |
3f76745e JM |
1242 | |
1243 | src = SET_SRC (insn); | |
1244 | dest = SET_DEST (insn); | |
1245 | ||
1246 | switch (GET_CODE (dest)) | |
1247 | { | |
1248 | case REG: | |
1249 | /* Update the CFA rule wrt SP or FP. Make sure src is | |
1250 | relative to the current CFA register. */ | |
1251 | switch (GET_CODE (src)) | |
1252 | { | |
1253 | /* Setting FP from SP. */ | |
1254 | case REG: | |
c84e2712 | 1255 | if (cfa_reg != (unsigned) REGNO (src)) |
3a88cbd1 JL |
1256 | abort (); |
1257 | if (REGNO (dest) != STACK_POINTER_REGNUM | |
1258 | && !(frame_pointer_needed | |
1259 | && REGNO (dest) == HARD_FRAME_POINTER_REGNUM)) | |
1260 | abort (); | |
3f76745e JM |
1261 | cfa_reg = REGNO (dest); |
1262 | break; | |
1263 | ||
1264 | case PLUS: | |
1265 | case MINUS: | |
1266 | if (dest == stack_pointer_rtx) | |
1267 | { | |
1268 | /* Adjusting SP. */ | |
1269 | switch (GET_CODE (XEXP (src, 1))) | |
1270 | { | |
1271 | case CONST_INT: | |
1272 | offset = INTVAL (XEXP (src, 1)); | |
1273 | break; | |
1274 | case REG: | |
c84e2712 | 1275 | if ((unsigned) REGNO (XEXP (src, 1)) != cfa_temp_reg) |
3a88cbd1 | 1276 | abort (); |
3f76745e JM |
1277 | offset = cfa_temp_value; |
1278 | break; | |
1279 | default: | |
1280 | abort (); | |
1281 | } | |
1282 | ||
0021b564 JM |
1283 | if (XEXP (src, 0) == hard_frame_pointer_rtx) |
1284 | { | |
1285 | /* Restoring SP from FP in the epilogue. */ | |
c84e2712 | 1286 | if (cfa_reg != (unsigned) HARD_FRAME_POINTER_REGNUM) |
3a88cbd1 | 1287 | abort (); |
0021b564 JM |
1288 | cfa_reg = STACK_POINTER_REGNUM; |
1289 | } | |
3a88cbd1 JL |
1290 | else if (XEXP (src, 0) != stack_pointer_rtx) |
1291 | abort (); | |
0021b564 | 1292 | |
3f76745e JM |
1293 | if (GET_CODE (src) == PLUS) |
1294 | offset = -offset; | |
1295 | if (cfa_reg == STACK_POINTER_REGNUM) | |
1296 | cfa_offset += offset; | |
1297 | if (cfa_store_reg == STACK_POINTER_REGNUM) | |
1298 | cfa_store_offset += offset; | |
3f76745e | 1299 | } |
63d96a95 GK |
1300 | else if (dest == hard_frame_pointer_rtx) |
1301 | { | |
1302 | /* Either setting the FP from an offset of the SP, | |
1303 | or adjusting the FP */ | |
1304 | if (! frame_pointer_needed | |
1305 | || REGNO (dest) != HARD_FRAME_POINTER_REGNUM) | |
1306 | abort (); | |
1307 | ||
1308 | if (XEXP (src, 0) == stack_pointer_rtx | |
1309 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
1310 | { | |
1311 | if (cfa_reg != STACK_POINTER_REGNUM) | |
1312 | abort (); | |
1313 | offset = INTVAL (XEXP (src, 1)); | |
1314 | if (GET_CODE (src) == PLUS) | |
1315 | offset = -offset; | |
1316 | cfa_offset += offset; | |
1317 | cfa_reg = HARD_FRAME_POINTER_REGNUM; | |
1318 | } | |
1319 | else if (XEXP (src, 0) == hard_frame_pointer_rtx | |
1320 | && GET_CODE (XEXP (src, 1)) == CONST_INT) | |
1321 | { | |
c84e2712 | 1322 | if (cfa_reg != (unsigned) HARD_FRAME_POINTER_REGNUM) |
63d96a95 GK |
1323 | abort (); |
1324 | offset = INTVAL (XEXP (src, 1)); | |
1325 | if (GET_CODE (src) == PLUS) | |
1326 | offset = -offset; | |
1327 | cfa_offset += offset; | |
1328 | } | |
1329 | ||
1330 | else | |
1331 | abort(); | |
1332 | } | |
3f76745e JM |
1333 | else |
1334 | { | |
3a88cbd1 | 1335 | if (GET_CODE (src) != PLUS |
31d52528 | 1336 | || XEXP (src, 1) != stack_pointer_rtx) |
3a88cbd1 JL |
1337 | abort (); |
1338 | if (GET_CODE (XEXP (src, 0)) != REG | |
c84e2712 | 1339 | || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp_reg) |
3a88cbd1 | 1340 | abort (); |
218c2cdb JW |
1341 | if (cfa_reg != STACK_POINTER_REGNUM) |
1342 | abort (); | |
3f76745e | 1343 | cfa_store_reg = REGNO (dest); |
218c2cdb | 1344 | cfa_store_offset = cfa_offset - cfa_temp_value; |
3f76745e JM |
1345 | } |
1346 | break; | |
1347 | ||
1348 | case CONST_INT: | |
1349 | cfa_temp_reg = REGNO (dest); | |
1350 | cfa_temp_value = INTVAL (src); | |
1351 | break; | |
1352 | ||
ef76d03b | 1353 | case IOR: |
3a88cbd1 | 1354 | if (GET_CODE (XEXP (src, 0)) != REG |
c84e2712 KG |
1355 | || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp_reg |
1356 | || (unsigned) REGNO (dest) != cfa_temp_reg | |
3a88cbd1 JL |
1357 | || GET_CODE (XEXP (src, 1)) != CONST_INT) |
1358 | abort (); | |
ef76d03b JW |
1359 | cfa_temp_value |= INTVAL (XEXP (src, 1)); |
1360 | break; | |
1361 | ||
3f76745e JM |
1362 | default: |
1363 | abort (); | |
1364 | } | |
1365 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1366 | break; | |
1367 | ||
1368 | case MEM: | |
1369 | /* Saving a register to the stack. Make sure dest is relative to the | |
1370 | CFA register. */ | |
3a88cbd1 JL |
1371 | if (GET_CODE (src) != REG) |
1372 | abort (); | |
3f76745e JM |
1373 | switch (GET_CODE (XEXP (dest, 0))) |
1374 | { | |
1375 | /* With a push. */ | |
1376 | case PRE_INC: | |
1377 | case PRE_DEC: | |
1378 | offset = GET_MODE_SIZE (GET_MODE (dest)); | |
0021b564 | 1379 | if (GET_CODE (XEXP (dest, 0)) == PRE_INC) |
3f76745e JM |
1380 | offset = -offset; |
1381 | ||
3a88cbd1 JL |
1382 | if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM |
1383 | || cfa_store_reg != STACK_POINTER_REGNUM) | |
1384 | abort (); | |
3f76745e JM |
1385 | cfa_store_offset += offset; |
1386 | if (cfa_reg == STACK_POINTER_REGNUM) | |
1387 | cfa_offset = cfa_store_offset; | |
1388 | ||
1389 | offset = -cfa_store_offset; | |
1390 | break; | |
1391 | ||
1392 | /* With an offset. */ | |
1393 | case PLUS: | |
1394 | case MINUS: | |
1395 | offset = INTVAL (XEXP (XEXP (dest, 0), 1)); | |
1396 | if (GET_CODE (src) == MINUS) | |
1397 | offset = -offset; | |
1398 | ||
c84e2712 | 1399 | if (cfa_store_reg != (unsigned) REGNO (XEXP (XEXP (dest, 0), 0))) |
3a88cbd1 | 1400 | abort (); |
3f76745e JM |
1401 | offset -= cfa_store_offset; |
1402 | break; | |
1403 | ||
07ebc930 RH |
1404 | /* Without an offset. */ |
1405 | case REG: | |
c84e2712 | 1406 | if (cfa_store_reg != (unsigned) REGNO (XEXP (dest, 0))) |
07ebc930 RH |
1407 | abort(); |
1408 | offset = -cfa_store_offset; | |
1409 | break; | |
1410 | ||
3f76745e JM |
1411 | default: |
1412 | abort (); | |
1413 | } | |
1414 | dwarf2out_def_cfa (label, cfa_reg, cfa_offset); | |
1415 | dwarf2out_reg_save (label, REGNO (src), offset); | |
1416 | break; | |
1417 | ||
1418 | default: | |
1419 | abort (); | |
1420 | } | |
1421 | } | |
1422 | ||
1423 | /* Return the size of an unsigned LEB128 quantity. */ | |
1424 | ||
1425 | static inline unsigned long | |
1426 | size_of_uleb128 (value) | |
1427 | register unsigned long value; | |
1428 | { | |
1429 | register unsigned long size = 0; | |
1430 | register unsigned byte; | |
1431 | ||
1432 | do | |
1433 | { | |
1434 | byte = (value & 0x7f); | |
1435 | value >>= 7; | |
1436 | size += 1; | |
1437 | } | |
1438 | while (value != 0); | |
1439 | ||
1440 | return size; | |
1441 | } | |
1442 | ||
1443 | /* Return the size of a signed LEB128 quantity. */ | |
1444 | ||
1445 | static inline unsigned long | |
1446 | size_of_sleb128 (value) | |
1447 | register long value; | |
1448 | { | |
1449 | register unsigned long size = 0; | |
1450 | register unsigned byte; | |
1451 | ||
1452 | do | |
1453 | { | |
1454 | byte = (value & 0x7f); | |
1455 | value >>= 7; | |
1456 | size += 1; | |
1457 | } | |
1458 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
1459 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1460 | ||
1461 | return size; | |
1462 | } | |
1463 | ||
3f76745e JM |
1464 | /* Output an unsigned LEB128 quantity. */ |
1465 | ||
1466 | static void | |
1467 | output_uleb128 (value) | |
1468 | register unsigned long value; | |
1469 | { | |
1470 | unsigned long save_value = value; | |
1471 | ||
1472 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
1473 | do | |
1474 | { | |
1475 | register unsigned byte = (value & 0x7f); | |
1476 | value >>= 7; | |
1477 | if (value != 0) | |
1478 | /* More bytes to follow. */ | |
1479 | byte |= 0x80; | |
1480 | ||
1481 | fprintf (asm_out_file, "0x%x", byte); | |
1482 | if (value != 0) | |
1483 | fprintf (asm_out_file, ","); | |
1484 | } | |
1485 | while (value != 0); | |
1486 | ||
c5cec899 | 1487 | if (flag_debug_asm) |
2d8b0f3a | 1488 | fprintf (asm_out_file, "\t%s ULEB128 0x%lx", ASM_COMMENT_START, save_value); |
3f76745e JM |
1489 | } |
1490 | ||
1491 | /* Output an signed LEB128 quantity. */ | |
1492 | ||
1493 | static void | |
1494 | output_sleb128 (value) | |
1495 | register long value; | |
1496 | { | |
1497 | register int more; | |
1498 | register unsigned byte; | |
1499 | long save_value = value; | |
1500 | ||
1501 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
1502 | do | |
1503 | { | |
1504 | byte = (value & 0x7f); | |
1505 | /* arithmetic shift */ | |
1506 | value >>= 7; | |
1507 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
1508 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
1509 | if (more) | |
1510 | byte |= 0x80; | |
1511 | ||
1512 | fprintf (asm_out_file, "0x%x", byte); | |
1513 | if (more) | |
1514 | fprintf (asm_out_file, ","); | |
1515 | } | |
1516 | ||
1517 | while (more); | |
c5cec899 | 1518 | if (flag_debug_asm) |
2d8b0f3a | 1519 | fprintf (asm_out_file, "\t%s SLEB128 %ld", ASM_COMMENT_START, save_value); |
3f76745e JM |
1520 | } |
1521 | ||
1522 | /* Output a Call Frame Information opcode and its operand(s). */ | |
1523 | ||
1524 | static void | |
1525 | output_cfi (cfi, fde) | |
1526 | register dw_cfi_ref cfi; | |
1527 | register dw_fde_ref fde; | |
1528 | { | |
1529 | if (cfi->dw_cfi_opc == DW_CFA_advance_loc) | |
1530 | { | |
1531 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1532 | cfi->dw_cfi_opc | |
1533 | | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)); | |
c5cec899 | 1534 | if (flag_debug_asm) |
2d8b0f3a | 1535 | fprintf (asm_out_file, "\t%s DW_CFA_advance_loc 0x%lx", |
3f76745e JM |
1536 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_offset); |
1537 | fputc ('\n', asm_out_file); | |
1538 | } | |
1539 | ||
1540 | else if (cfi->dw_cfi_opc == DW_CFA_offset) | |
1541 | { | |
1542 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1543 | cfi->dw_cfi_opc | |
1544 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1545 | if (flag_debug_asm) |
2d8b0f3a | 1546 | fprintf (asm_out_file, "\t%s DW_CFA_offset, column 0x%lx", |
3f76745e JM |
1547 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); |
1548 | ||
1549 | fputc ('\n', asm_out_file); | |
1550 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1551 | fputc ('\n', asm_out_file); | |
1552 | } | |
1553 | else if (cfi->dw_cfi_opc == DW_CFA_restore) | |
1554 | { | |
1555 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
1556 | cfi->dw_cfi_opc | |
1557 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
c5cec899 | 1558 | if (flag_debug_asm) |
2d8b0f3a | 1559 | fprintf (asm_out_file, "\t%s DW_CFA_restore, column 0x%lx", |
3f76745e JM |
1560 | ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num); |
1561 | ||
1562 | fputc ('\n', asm_out_file); | |
1563 | } | |
1564 | else | |
1565 | { | |
1566 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, cfi->dw_cfi_opc); | |
c5cec899 | 1567 | if (flag_debug_asm) |
3f76745e JM |
1568 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
1569 | dwarf_cfi_name (cfi->dw_cfi_opc)); | |
1570 | ||
1571 | fputc ('\n', asm_out_file); | |
1572 | switch (cfi->dw_cfi_opc) | |
1573 | { | |
1574 | case DW_CFA_set_loc: | |
1575 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, cfi->dw_cfi_oprnd1.dw_cfi_addr); | |
1576 | fputc ('\n', asm_out_file); | |
1577 | break; | |
1578 | case DW_CFA_advance_loc1: | |
bb727b5a JM |
1579 | ASM_OUTPUT_DWARF_DELTA1 (asm_out_file, |
1580 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1581 | fde->dw_fde_current_label); | |
1582 | fputc ('\n', asm_out_file); | |
1583 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
3f76745e JM |
1584 | break; |
1585 | case DW_CFA_advance_loc2: | |
1586 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, | |
1587 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1588 | fde->dw_fde_current_label); | |
1589 | fputc ('\n', asm_out_file); | |
1590 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1591 | break; | |
1592 | case DW_CFA_advance_loc4: | |
1593 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, | |
1594 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
1595 | fde->dw_fde_current_label); | |
1596 | fputc ('\n', asm_out_file); | |
1597 | fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr; | |
1598 | break; | |
1599 | #ifdef MIPS_DEBUGGING_INFO | |
1600 | case DW_CFA_MIPS_advance_loc8: | |
1601 | /* TODO: not currently implemented. */ | |
1602 | abort (); | |
1603 | break; | |
1604 | #endif | |
1605 | case DW_CFA_offset_extended: | |
1606 | case DW_CFA_def_cfa: | |
1607 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1608 | fputc ('\n', asm_out_file); | |
1609 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
1610 | fputc ('\n', asm_out_file); | |
1611 | break; | |
1612 | case DW_CFA_restore_extended: | |
1613 | case DW_CFA_undefined: | |
1614 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1615 | fputc ('\n', asm_out_file); | |
1616 | break; | |
1617 | case DW_CFA_same_value: | |
1618 | case DW_CFA_def_cfa_register: | |
1619 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1620 | fputc ('\n', asm_out_file); | |
1621 | break; | |
1622 | case DW_CFA_register: | |
1623 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
1624 | fputc ('\n', asm_out_file); | |
1625 | output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_reg_num); | |
1626 | fputc ('\n', asm_out_file); | |
1627 | break; | |
1628 | case DW_CFA_def_cfa_offset: | |
1629 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1630 | fputc ('\n', asm_out_file); | |
1631 | break; | |
c53aa195 JM |
1632 | case DW_CFA_GNU_window_save: |
1633 | break; | |
0021b564 JM |
1634 | case DW_CFA_GNU_args_size: |
1635 | output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
1636 | fputc ('\n', asm_out_file); | |
1637 | break; | |
3f76745e JM |
1638 | default: |
1639 | break; | |
1640 | } | |
1641 | } | |
1642 | } | |
1643 | ||
0021b564 JM |
1644 | #if !defined (EH_FRAME_SECTION) |
1645 | #if defined (EH_FRAME_SECTION_ASM_OP) | |
1646 | #define EH_FRAME_SECTION() eh_frame_section(); | |
1647 | #else | |
1648 | #if defined (ASM_OUTPUT_SECTION_NAME) | |
1649 | #define EH_FRAME_SECTION() \ | |
1650 | do { \ | |
1651 | named_section (NULL_TREE, ".eh_frame", 0); \ | |
1652 | } while (0) | |
1653 | #endif | |
1654 | #endif | |
1655 | #endif | |
1656 | ||
d460fb3c JM |
1657 | /* If we aren't using crtstuff to run ctors, don't use it for EH. */ |
1658 | #if !defined (HAS_INIT_SECTION) && !defined (INIT_SECTION_ASM_OP) | |
1659 | #undef EH_FRAME_SECTION | |
1660 | #endif | |
1661 | ||
3f76745e JM |
1662 | /* Output the call frame information used to used to record information |
1663 | that relates to calculating the frame pointer, and records the | |
1664 | location of saved registers. */ | |
1665 | ||
1666 | static void | |
1667 | output_call_frame_info (for_eh) | |
1668 | int for_eh; | |
1669 | { | |
2d8b0f3a | 1670 | register unsigned long i; |
3f76745e | 1671 | register dw_fde_ref fde; |
3f76745e | 1672 | register dw_cfi_ref cfi; |
a6ab3aad | 1673 | char l1[20], l2[20]; |
2ed2af28 PDM |
1674 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1675 | char ld[20]; | |
1676 | #endif | |
a6ab3aad JM |
1677 | |
1678 | /* Do we want to include a pointer to the exception table? */ | |
1679 | int eh_ptr = for_eh && exception_table_p (); | |
3f76745e | 1680 | |
3f76745e | 1681 | fputc ('\n', asm_out_file); |
e9e30253 | 1682 | |
aa0c1401 JL |
1683 | /* We're going to be generating comments, so turn on app. */ |
1684 | if (flag_debug_asm) | |
1685 | app_enable (); | |
956d6950 | 1686 | |
3f76745e JM |
1687 | if (for_eh) |
1688 | { | |
1689 | #ifdef EH_FRAME_SECTION | |
0021b564 | 1690 | EH_FRAME_SECTION (); |
3f76745e | 1691 | #else |
496651db | 1692 | tree label = get_file_function_name ('F'); |
0021b564 | 1693 | |
3167de5b | 1694 | force_data_section (); |
f4744807 | 1695 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); |
0021b564 JM |
1696 | ASM_GLOBALIZE_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); |
1697 | ASM_OUTPUT_LABEL (asm_out_file, IDENTIFIER_POINTER (label)); | |
3f76745e JM |
1698 | #endif |
1699 | assemble_label ("__FRAME_BEGIN__"); | |
1700 | } | |
1701 | else | |
1702 | ASM_OUTPUT_SECTION (asm_out_file, FRAME_SECTION); | |
1703 | ||
1704 | /* Output the CIE. */ | |
a6ab3aad JM |
1705 | ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh); |
1706 | ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh); | |
2ed2af28 PDM |
1707 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1708 | ASM_GENERATE_INTERNAL_LABEL (ld, CIE_LENGTH_LABEL, for_eh); | |
1709 | if (for_eh) | |
7bb9fb0e | 1710 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1711 | else |
1712 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1713 | #else | |
267c09ab JM |
1714 | if (for_eh) |
1715 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1716 | else | |
1717 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1718 | #endif |
c5cec899 | 1719 | if (flag_debug_asm) |
3f76745e JM |
1720 | fprintf (asm_out_file, "\t%s Length of Common Information Entry", |
1721 | ASM_COMMENT_START); | |
1722 | ||
1723 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1724 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1725 | ||
d84e64d4 JM |
1726 | if (for_eh) |
1727 | /* Now that the CIE pointer is PC-relative for EH, | |
1728 | use 0 to identify the CIE. */ | |
1729 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); | |
1730 | else | |
1731 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1732 | ||
c5cec899 | 1733 | if (flag_debug_asm) |
3f76745e JM |
1734 | fprintf (asm_out_file, "\t%s CIE Identifier Tag", ASM_COMMENT_START); |
1735 | ||
1736 | fputc ('\n', asm_out_file); | |
d84e64d4 | 1737 | if (! for_eh && DWARF_OFFSET_SIZE == 8) |
3f76745e JM |
1738 | { |
1739 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
1740 | fputc ('\n', asm_out_file); | |
1741 | } | |
1742 | ||
1743 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_CIE_VERSION); | |
c5cec899 | 1744 | if (flag_debug_asm) |
3f76745e JM |
1745 | fprintf (asm_out_file, "\t%s CIE Version", ASM_COMMENT_START); |
1746 | ||
1747 | fputc ('\n', asm_out_file); | |
a6ab3aad JM |
1748 | if (eh_ptr) |
1749 | { | |
d84e64d4 JM |
1750 | /* The CIE contains a pointer to the exception region info for the |
1751 | frame. Make the augmentation string three bytes (including the | |
1752 | trailing null) so the pointer is 4-byte aligned. The Solaris ld | |
1753 | can't handle unaligned relocs. */ | |
c5cec899 | 1754 | if (flag_debug_asm) |
8d4e65a6 JL |
1755 | { |
1756 | ASM_OUTPUT_DWARF_STRING (asm_out_file, "eh"); | |
1757 | fprintf (asm_out_file, "\t%s CIE Augmentation", ASM_COMMENT_START); | |
1758 | } | |
1759 | else | |
1760 | { | |
c2c85462 | 1761 | ASM_OUTPUT_ASCII (asm_out_file, "eh", 3); |
8d4e65a6 | 1762 | } |
d84e64d4 JM |
1763 | fputc ('\n', asm_out_file); |
1764 | ||
1765 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, "__EXCEPTION_TABLE__"); | |
1766 | if (flag_debug_asm) | |
1767 | fprintf (asm_out_file, "\t%s pointer to exception region info", | |
1768 | ASM_COMMENT_START); | |
a6ab3aad JM |
1769 | } |
1770 | else | |
1771 | { | |
1772 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 1773 | if (flag_debug_asm) |
a6ab3aad JM |
1774 | fprintf (asm_out_file, "\t%s CIE Augmentation (none)", |
1775 | ASM_COMMENT_START); | |
1776 | } | |
3f76745e JM |
1777 | |
1778 | fputc ('\n', asm_out_file); | |
1779 | output_uleb128 (1); | |
c5cec899 | 1780 | if (flag_debug_asm) |
3f76745e JM |
1781 | fprintf (asm_out_file, " (CIE Code Alignment Factor)"); |
1782 | ||
1783 | fputc ('\n', asm_out_file); | |
1784 | output_sleb128 (DWARF_CIE_DATA_ALIGNMENT); | |
c5cec899 | 1785 | if (flag_debug_asm) |
3f76745e JM |
1786 | fprintf (asm_out_file, " (CIE Data Alignment Factor)"); |
1787 | ||
1788 | fputc ('\n', asm_out_file); | |
1789 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_FRAME_RETURN_COLUMN); | |
c5cec899 | 1790 | if (flag_debug_asm) |
3f76745e JM |
1791 | fprintf (asm_out_file, "\t%s CIE RA Column", ASM_COMMENT_START); |
1792 | ||
1793 | fputc ('\n', asm_out_file); | |
1794 | ||
1795 | for (cfi = cie_cfi_head; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1796 | output_cfi (cfi, NULL); | |
1797 | ||
1798 | /* Pad the CIE out to an address sized boundary. */ | |
a6ab3aad JM |
1799 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); |
1800 | ASM_OUTPUT_LABEL (asm_out_file, l2); | |
2ed2af28 PDM |
1801 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1802 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1803 | if (flag_debug_asm) |
1804 | fprintf (asm_out_file, "\t%s CIE Length Symbol", ASM_COMMENT_START); | |
1805 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1806 | #endif |
3f76745e JM |
1807 | |
1808 | /* Loop through all of the FDE's. */ | |
1809 | for (i = 0; i < fde_table_in_use; ++i) | |
1810 | { | |
1811 | fde = &fde_table[i]; | |
3f76745e | 1812 | |
a6ab3aad JM |
1813 | ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i*2); |
1814 | ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i*2); | |
2ed2af28 PDM |
1815 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1816 | ASM_GENERATE_INTERNAL_LABEL (ld, FDE_LENGTH_LABEL, for_eh + i*2); | |
1817 | if (for_eh) | |
7bb9fb0e | 1818 | ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld); |
2ed2af28 PDM |
1819 | else |
1820 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld); | |
1821 | #else | |
267c09ab JM |
1822 | if (for_eh) |
1823 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1); | |
1824 | else | |
1825 | ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1); | |
2ed2af28 | 1826 | #endif |
c5cec899 | 1827 | if (flag_debug_asm) |
3f76745e | 1828 | fprintf (asm_out_file, "\t%s FDE Length", ASM_COMMENT_START); |
3f76745e | 1829 | fputc ('\n', asm_out_file); |
a6ab3aad JM |
1830 | ASM_OUTPUT_LABEL (asm_out_file, l1); |
1831 | ||
eef906d6 JW |
1832 | /* ??? This always emits a 4 byte offset when for_eh is true, but it |
1833 | emits a target dependent sized offset when for_eh is not true. | |
1834 | This inconsistency may confuse gdb. The only case where we need a | |
1835 | non-4 byte offset is for the Irix6 N64 ABI, so we may lose SGI | |
1836 | compatibility if we emit a 4 byte offset. We need a 4 byte offset | |
1837 | though in order to be compatible with the dwarf_fde struct in frame.c. | |
1838 | If the for_eh case is changed, then the struct in frame.c has | |
1839 | to be adjusted appropriately. */ | |
3f76745e | 1840 | if (for_eh) |
21af493b | 1841 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l1, "__FRAME_BEGIN__"); |
3f76745e JM |
1842 | else |
1843 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (FRAME_SECTION)); | |
c5cec899 | 1844 | if (flag_debug_asm) |
3f76745e JM |
1845 | fprintf (asm_out_file, "\t%s FDE CIE offset", ASM_COMMENT_START); |
1846 | ||
1847 | fputc ('\n', asm_out_file); | |
1848 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, fde->dw_fde_begin); | |
c5cec899 | 1849 | if (flag_debug_asm) |
3f76745e JM |
1850 | fprintf (asm_out_file, "\t%s FDE initial location", ASM_COMMENT_START); |
1851 | ||
1852 | fputc ('\n', asm_out_file); | |
1853 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, | |
1854 | fde->dw_fde_end, fde->dw_fde_begin); | |
c5cec899 | 1855 | if (flag_debug_asm) |
3f76745e JM |
1856 | fprintf (asm_out_file, "\t%s FDE address range", ASM_COMMENT_START); |
1857 | ||
1858 | fputc ('\n', asm_out_file); | |
1859 | ||
1860 | /* Loop through the Call Frame Instructions associated with | |
1861 | this FDE. */ | |
1862 | fde->dw_fde_current_label = fde->dw_fde_begin; | |
1863 | for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next) | |
1864 | output_cfi (cfi, fde); | |
1865 | ||
a6ab3aad JM |
1866 | /* Pad the FDE out to an address sized boundary. */ |
1867 | ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE)); | |
1868 | ASM_OUTPUT_LABEL (asm_out_file, l2); | |
2ed2af28 PDM |
1869 | #ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL |
1870 | ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1); | |
7bb9fb0e JM |
1871 | if (flag_debug_asm) |
1872 | fprintf (asm_out_file, "\t%s FDE Length Symbol", ASM_COMMENT_START); | |
1873 | fputc ('\n', asm_out_file); | |
2ed2af28 | 1874 | #endif |
3f76745e JM |
1875 | } |
1876 | #ifndef EH_FRAME_SECTION | |
1877 | if (for_eh) | |
1878 | { | |
1879 | /* Emit terminating zero for table. */ | |
267c09ab | 1880 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0); |
3f76745e JM |
1881 | fputc ('\n', asm_out_file); |
1882 | } | |
1883 | #endif | |
a6ab3aad JM |
1884 | #ifdef MIPS_DEBUGGING_INFO |
1885 | /* Work around Irix 6 assembler bug whereby labels at the end of a section | |
1886 | get a value of 0. Putting .align 0 after the label fixes it. */ | |
1887 | ASM_OUTPUT_ALIGN (asm_out_file, 0); | |
1888 | #endif | |
aa0c1401 JL |
1889 | |
1890 | /* Turn off app to make assembly quicker. */ | |
1891 | if (flag_debug_asm) | |
1892 | app_disable (); | |
a6ab3aad JM |
1893 | } |
1894 | ||
3f76745e JM |
1895 | /* Output a marker (i.e. a label) for the beginning of a function, before |
1896 | the prologue. */ | |
1897 | ||
1898 | void | |
1899 | dwarf2out_begin_prologue () | |
1900 | { | |
1901 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
1902 | register dw_fde_ref fde; | |
1903 | ||
4f988ea2 JM |
1904 | ++current_funcdef_number; |
1905 | ||
3f76745e JM |
1906 | function_section (current_function_decl); |
1907 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL, | |
1908 | current_funcdef_number); | |
1909 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
1910 | ||
1911 | /* Expand the fde table if necessary. */ | |
1912 | if (fde_table_in_use == fde_table_allocated) | |
1913 | { | |
1914 | fde_table_allocated += FDE_TABLE_INCREMENT; | |
1915 | fde_table | |
1916 | = (dw_fde_ref) xrealloc (fde_table, | |
1917 | fde_table_allocated * sizeof (dw_fde_node)); | |
a3f97cbb | 1918 | } |
3f76745e JM |
1919 | |
1920 | /* Record the FDE associated with this function. */ | |
1921 | current_funcdef_fde = fde_table_in_use; | |
1922 | ||
1923 | /* Add the new FDE at the end of the fde_table. */ | |
1924 | fde = &fde_table[fde_table_in_use++]; | |
1925 | fde->dw_fde_begin = xstrdup (label); | |
1926 | fde->dw_fde_current_label = NULL; | |
1927 | fde->dw_fde_end = NULL; | |
1928 | fde->dw_fde_cfi = NULL; | |
0021b564 | 1929 | |
b57d9225 | 1930 | args_size = old_args_size = 0; |
3f76745e JM |
1931 | } |
1932 | ||
1933 | /* Output a marker (i.e. a label) for the absolute end of the generated code | |
1934 | for a function definition. This gets called *after* the epilogue code has | |
1935 | been generated. */ | |
1936 | ||
1937 | void | |
1938 | dwarf2out_end_epilogue () | |
1939 | { | |
1940 | dw_fde_ref fde; | |
1941 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
1942 | ||
1943 | /* Output a label to mark the endpoint of the code generated for this | |
1944 | function. */ | |
1945 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_END_LABEL, current_funcdef_number); | |
1946 | ASM_OUTPUT_LABEL (asm_out_file, label); | |
1947 | fde = &fde_table[fde_table_in_use - 1]; | |
1948 | fde->dw_fde_end = xstrdup (label); | |
3f76745e JM |
1949 | } |
1950 | ||
1951 | void | |
1952 | dwarf2out_frame_init () | |
1953 | { | |
1954 | /* Allocate the initial hunk of the fde_table. */ | |
1955 | fde_table | |
1956 | = (dw_fde_ref) xmalloc (FDE_TABLE_INCREMENT * sizeof (dw_fde_node)); | |
1957 | bzero ((char *) fde_table, FDE_TABLE_INCREMENT * sizeof (dw_fde_node)); | |
1958 | fde_table_allocated = FDE_TABLE_INCREMENT; | |
1959 | fde_table_in_use = 0; | |
1960 | ||
1961 | /* Generate the CFA instructions common to all FDE's. Do it now for the | |
1962 | sake of lookup_cfa. */ | |
1963 | ||
a6ab3aad | 1964 | #ifdef DWARF2_UNWIND_INFO |
91193900 AS |
1965 | /* On entry, the Canonical Frame Address is at SP. */ |
1966 | dwarf2out_def_cfa (NULL, STACK_POINTER_REGNUM, INCOMING_FRAME_SP_OFFSET); | |
1967 | initial_return_save (INCOMING_RETURN_ADDR_RTX); | |
3f76745e JM |
1968 | #endif |
1969 | } | |
1970 | ||
1971 | void | |
1972 | dwarf2out_frame_finish () | |
1973 | { | |
3f76745e | 1974 | /* Output call frame information. */ |
a6ab3aad | 1975 | #ifdef MIPS_DEBUGGING_INFO |
3f76745e JM |
1976 | if (write_symbols == DWARF2_DEBUG) |
1977 | output_call_frame_info (0); | |
1978 | if (flag_exceptions && ! exceptions_via_longjmp) | |
1979 | output_call_frame_info (1); | |
a6ab3aad JM |
1980 | #else |
1981 | if (write_symbols == DWARF2_DEBUG | |
1982 | || (flag_exceptions && ! exceptions_via_longjmp)) | |
1983 | output_call_frame_info (1); | |
1984 | #endif | |
3f76745e JM |
1985 | } |
1986 | ||
1987 | #endif /* .debug_frame support */ | |
1988 | ||
1989 | /* And now, the support for symbolic debugging information. */ | |
1990 | #ifdef DWARF2_DEBUGGING_INFO | |
1991 | ||
e179bf0f | 1992 | extern char *getpwd PROTO((void)); |
3f76745e JM |
1993 | |
1994 | /* NOTE: In the comments in this file, many references are made to | |
1995 | "Debugging Information Entries". This term is abbreviated as `DIE' | |
1996 | throughout the remainder of this file. */ | |
1997 | ||
1998 | /* An internal representation of the DWARF output is built, and then | |
1999 | walked to generate the DWARF debugging info. The walk of the internal | |
2000 | representation is done after the entire program has been compiled. | |
2001 | The types below are used to describe the internal representation. */ | |
2002 | ||
2003 | /* Each DIE may have a series of attribute/value pairs. Values | |
2004 | can take on several forms. The forms that are used in this | |
2005 | implementation are listed below. */ | |
2006 | ||
2007 | typedef enum | |
2008 | { | |
2009 | dw_val_class_addr, | |
2010 | dw_val_class_loc, | |
2011 | dw_val_class_const, | |
2012 | dw_val_class_unsigned_const, | |
2013 | dw_val_class_long_long, | |
2014 | dw_val_class_float, | |
2015 | dw_val_class_flag, | |
2016 | dw_val_class_die_ref, | |
2017 | dw_val_class_fde_ref, | |
2018 | dw_val_class_lbl_id, | |
2019 | dw_val_class_section_offset, | |
2020 | dw_val_class_str | |
a3f97cbb | 2021 | } |
3f76745e | 2022 | dw_val_class; |
a3f97cbb | 2023 | |
3f76745e JM |
2024 | /* Various DIE's use offsets relative to the beginning of the |
2025 | .debug_info section to refer to each other. */ | |
71dfc51f | 2026 | |
3f76745e JM |
2027 | typedef long int dw_offset; |
2028 | ||
2029 | /* Define typedefs here to avoid circular dependencies. */ | |
2030 | ||
2031 | typedef struct die_struct *dw_die_ref; | |
2032 | typedef struct dw_attr_struct *dw_attr_ref; | |
2033 | typedef struct dw_val_struct *dw_val_ref; | |
2034 | typedef struct dw_line_info_struct *dw_line_info_ref; | |
2035 | typedef struct dw_separate_line_info_struct *dw_separate_line_info_ref; | |
2036 | typedef struct dw_loc_descr_struct *dw_loc_descr_ref; | |
2037 | typedef struct pubname_struct *pubname_ref; | |
2038 | typedef dw_die_ref *arange_ref; | |
2039 | ||
2040 | /* Describe a double word constant value. */ | |
2041 | ||
2042 | typedef struct dw_long_long_struct | |
a3f97cbb | 2043 | { |
3f76745e JM |
2044 | unsigned long hi; |
2045 | unsigned long low; | |
2046 | } | |
2047 | dw_long_long_const; | |
2048 | ||
2049 | /* Describe a floating point constant value. */ | |
2050 | ||
2051 | typedef struct dw_fp_struct | |
2052 | { | |
2053 | long *array; | |
2054 | unsigned length; | |
2055 | } | |
2056 | dw_float_const; | |
2057 | ||
2058 | /* Each entry in the line_info_table maintains the file and | |
956d6950 | 2059 | line number associated with the label generated for that |
3f76745e JM |
2060 | entry. The label gives the PC value associated with |
2061 | the line number entry. */ | |
2062 | ||
2063 | typedef struct dw_line_info_struct | |
2064 | { | |
2065 | unsigned long dw_file_num; | |
2066 | unsigned long dw_line_num; | |
2067 | } | |
2068 | dw_line_info_entry; | |
2069 | ||
2070 | /* Line information for functions in separate sections; each one gets its | |
2071 | own sequence. */ | |
2072 | typedef struct dw_separate_line_info_struct | |
2073 | { | |
2074 | unsigned long dw_file_num; | |
2075 | unsigned long dw_line_num; | |
2076 | unsigned long function; | |
2077 | } | |
2078 | dw_separate_line_info_entry; | |
2079 | ||
956d6950 | 2080 | /* The dw_val_node describes an attribute's value, as it is |
3f76745e JM |
2081 | represented internally. */ |
2082 | ||
2083 | typedef struct dw_val_struct | |
2084 | { | |
2085 | dw_val_class val_class; | |
2086 | union | |
a3f97cbb | 2087 | { |
3f76745e JM |
2088 | char *val_addr; |
2089 | dw_loc_descr_ref val_loc; | |
2090 | long int val_int; | |
2091 | long unsigned val_unsigned; | |
2092 | dw_long_long_const val_long_long; | |
2093 | dw_float_const val_float; | |
2094 | dw_die_ref val_die_ref; | |
2095 | unsigned val_fde_index; | |
2096 | char *val_str; | |
2097 | char *val_lbl_id; | |
1553e85a | 2098 | char *val_section; |
3f76745e | 2099 | unsigned char val_flag; |
a3f97cbb | 2100 | } |
3f76745e JM |
2101 | v; |
2102 | } | |
2103 | dw_val_node; | |
2104 | ||
2105 | /* Locations in memory are described using a sequence of stack machine | |
2106 | operations. */ | |
2107 | ||
2108 | typedef struct dw_loc_descr_struct | |
2109 | { | |
2110 | dw_loc_descr_ref dw_loc_next; | |
2111 | enum dwarf_location_atom dw_loc_opc; | |
2112 | dw_val_node dw_loc_oprnd1; | |
2113 | dw_val_node dw_loc_oprnd2; | |
2114 | } | |
2115 | dw_loc_descr_node; | |
2116 | ||
2117 | /* Each DIE attribute has a field specifying the attribute kind, | |
2118 | a link to the next attribute in the chain, and an attribute value. | |
2119 | Attributes are typically linked below the DIE they modify. */ | |
2120 | ||
2121 | typedef struct dw_attr_struct | |
2122 | { | |
2123 | enum dwarf_attribute dw_attr; | |
2124 | dw_attr_ref dw_attr_next; | |
2125 | dw_val_node dw_attr_val; | |
2126 | } | |
2127 | dw_attr_node; | |
2128 | ||
2129 | /* The Debugging Information Entry (DIE) structure */ | |
2130 | ||
2131 | typedef struct die_struct | |
2132 | { | |
2133 | enum dwarf_tag die_tag; | |
2134 | dw_attr_ref die_attr; | |
2135 | dw_attr_ref die_attr_last; | |
2136 | dw_die_ref die_parent; | |
2137 | dw_die_ref die_child; | |
2138 | dw_die_ref die_child_last; | |
2139 | dw_die_ref die_sib; | |
2140 | dw_offset die_offset; | |
2141 | unsigned long die_abbrev; | |
a3f97cbb | 2142 | } |
3f76745e JM |
2143 | die_node; |
2144 | ||
2145 | /* The pubname structure */ | |
2146 | ||
2147 | typedef struct pubname_struct | |
2148 | { | |
2149 | dw_die_ref die; | |
2150 | char * name; | |
2151 | } | |
2152 | pubname_entry; | |
2153 | ||
ef76d03b JW |
2154 | /* The limbo die list structure. */ |
2155 | typedef struct limbo_die_struct | |
2156 | { | |
2157 | dw_die_ref die; | |
2158 | struct limbo_die_struct *next; | |
2159 | } | |
2160 | limbo_die_node; | |
2161 | ||
3f76745e JM |
2162 | /* How to start an assembler comment. */ |
2163 | #ifndef ASM_COMMENT_START | |
2164 | #define ASM_COMMENT_START ";#" | |
2165 | #endif | |
2166 | ||
2167 | /* Define a macro which returns non-zero for a TYPE_DECL which was | |
2168 | implicitly generated for a tagged type. | |
2169 | ||
2170 | Note that unlike the gcc front end (which generates a NULL named | |
2171 | TYPE_DECL node for each complete tagged type, each array type, and | |
2172 | each function type node created) the g++ front end generates a | |
2173 | _named_ TYPE_DECL node for each tagged type node created. | |
2174 | These TYPE_DECLs have DECL_ARTIFICIAL set, so we know not to | |
2175 | generate a DW_TAG_typedef DIE for them. */ | |
2176 | ||
2177 | #define TYPE_DECL_IS_STUB(decl) \ | |
2178 | (DECL_NAME (decl) == NULL_TREE \ | |
2179 | || (DECL_ARTIFICIAL (decl) \ | |
2180 | && is_tagged_type (TREE_TYPE (decl)) \ | |
ef76d03b JW |
2181 | && ((decl == TYPE_STUB_DECL (TREE_TYPE (decl))) \ |
2182 | /* This is necessary for stub decls that \ | |
2183 | appear in nested inline functions. */ \ | |
2184 | || (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE \ | |
2185 | && (decl_ultimate_origin (decl) \ | |
2186 | == TYPE_STUB_DECL (TREE_TYPE (decl))))))) | |
3f76745e JM |
2187 | |
2188 | /* Information concerning the compilation unit's programming | |
2189 | language, and compiler version. */ | |
2190 | ||
2191 | extern int flag_traditional; | |
2192 | extern char *version_string; | |
2193 | extern char *language_string; | |
2194 | ||
2195 | /* Fixed size portion of the DWARF compilation unit header. */ | |
2196 | #define DWARF_COMPILE_UNIT_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 3) | |
2197 | ||
2198 | /* Fixed size portion of debugging line information prolog. */ | |
2199 | #define DWARF_LINE_PROLOG_HEADER_SIZE 5 | |
2200 | ||
2201 | /* Fixed size portion of public names info. */ | |
2202 | #define DWARF_PUBNAMES_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2) | |
2203 | ||
2204 | /* Fixed size portion of the address range info. */ | |
2205 | #define DWARF_ARANGES_HEADER_SIZE \ | |
2206 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, PTR_SIZE * 2) - DWARF_OFFSET_SIZE) | |
2207 | ||
2208 | /* Define the architecture-dependent minimum instruction length (in bytes). | |
2209 | In this implementation of DWARF, this field is used for information | |
2210 | purposes only. Since GCC generates assembly language, we have | |
2211 | no a priori knowledge of how many instruction bytes are generated | |
2212 | for each source line, and therefore can use only the DW_LNE_set_address | |
2213 | and DW_LNS_fixed_advance_pc line information commands. */ | |
2214 | ||
2215 | #ifndef DWARF_LINE_MIN_INSTR_LENGTH | |
2216 | #define DWARF_LINE_MIN_INSTR_LENGTH 4 | |
2217 | #endif | |
2218 | ||
2219 | /* Minimum line offset in a special line info. opcode. | |
2220 | This value was chosen to give a reasonable range of values. */ | |
2221 | #define DWARF_LINE_BASE -10 | |
2222 | ||
2223 | /* First special line opcde - leave room for the standard opcodes. */ | |
2224 | #define DWARF_LINE_OPCODE_BASE 10 | |
2225 | ||
2226 | /* Range of line offsets in a special line info. opcode. */ | |
2227 | #define DWARF_LINE_RANGE (254-DWARF_LINE_OPCODE_BASE+1) | |
2228 | ||
2229 | /* Flag that indicates the initial value of the is_stmt_start flag. | |
2230 | In the present implementation, we do not mark any lines as | |
2231 | the beginning of a source statement, because that information | |
2232 | is not made available by the GCC front-end. */ | |
2233 | #define DWARF_LINE_DEFAULT_IS_STMT_START 1 | |
2234 | ||
2235 | /* This location is used by calc_die_sizes() to keep track | |
2236 | the offset of each DIE within the .debug_info section. */ | |
2237 | static unsigned long next_die_offset; | |
2238 | ||
2239 | /* Record the root of the DIE's built for the current compilation unit. */ | |
2240 | static dw_die_ref comp_unit_die; | |
2241 | ||
ef76d03b JW |
2242 | /* A list of DIEs with a NULL parent waiting to be relocated. */ |
2243 | static limbo_die_node *limbo_die_list = 0; | |
3f76745e JM |
2244 | |
2245 | /* Pointer to an array of filenames referenced by this compilation unit. */ | |
2246 | static char **file_table; | |
2247 | ||
2248 | /* Total number of entries in the table (i.e. array) pointed to by | |
2249 | `file_table'. This is the *total* and includes both used and unused | |
2250 | slots. */ | |
2251 | static unsigned file_table_allocated; | |
a3f97cbb | 2252 | |
3f76745e JM |
2253 | /* Number of entries in the file_table which are actually in use. */ |
2254 | static unsigned file_table_in_use; | |
71dfc51f | 2255 | |
3f76745e JM |
2256 | /* Size (in elements) of increments by which we may expand the filename |
2257 | table. */ | |
2258 | #define FILE_TABLE_INCREMENT 64 | |
71dfc51f | 2259 | |
3f76745e JM |
2260 | /* Local pointer to the name of the main input file. Initialized in |
2261 | dwarf2out_init. */ | |
2262 | static char *primary_filename; | |
a3f97cbb | 2263 | |
3f76745e JM |
2264 | /* For Dwarf output, we must assign lexical-blocks id numbers in the order in |
2265 | which their beginnings are encountered. We output Dwarf debugging info | |
2266 | that refers to the beginnings and ends of the ranges of code for each | |
2267 | lexical block. The labels themselves are generated in final.c, which | |
2268 | assigns numbers to the blocks in the same way. */ | |
2269 | static unsigned next_block_number = 2; | |
a3f97cbb | 2270 | |
3f76745e JM |
2271 | /* A pointer to the base of a table of references to DIE's that describe |
2272 | declarations. The table is indexed by DECL_UID() which is a unique | |
956d6950 | 2273 | number identifying each decl. */ |
3f76745e | 2274 | static dw_die_ref *decl_die_table; |
71dfc51f | 2275 | |
3f76745e JM |
2276 | /* Number of elements currently allocated for the decl_die_table. */ |
2277 | static unsigned decl_die_table_allocated; | |
a3f97cbb | 2278 | |
3f76745e JM |
2279 | /* Number of elements in decl_die_table currently in use. */ |
2280 | static unsigned decl_die_table_in_use; | |
71dfc51f | 2281 | |
3f76745e JM |
2282 | /* Size (in elements) of increments by which we may expand the |
2283 | decl_die_table. */ | |
2284 | #define DECL_DIE_TABLE_INCREMENT 256 | |
a3f97cbb | 2285 | |
e3e7774e JW |
2286 | /* Structure used for the decl_scope table. scope is the current declaration |
2287 | scope, and previous is the entry that is the parent of this scope. This | |
2288 | is usually but not always the immediately preceeding entry. */ | |
2289 | ||
2290 | typedef struct decl_scope_struct | |
2291 | { | |
2292 | tree scope; | |
2293 | int previous; | |
2294 | } | |
2295 | decl_scope_node; | |
2296 | ||
3f76745e JM |
2297 | /* A pointer to the base of a table of references to declaration |
2298 | scopes. This table is a display which tracks the nesting | |
2299 | of declaration scopes at the current scope and containing | |
2300 | scopes. This table is used to find the proper place to | |
2301 | define type declaration DIE's. */ | |
e3e7774e | 2302 | static decl_scope_node *decl_scope_table; |
a3f97cbb | 2303 | |
3f76745e | 2304 | /* Number of elements currently allocated for the decl_scope_table. */ |
e3e7774e | 2305 | static int decl_scope_table_allocated; |
71dfc51f | 2306 | |
956d6950 | 2307 | /* Current level of nesting of declaration scopes. */ |
e3e7774e | 2308 | static int decl_scope_depth; |
bdb669cb | 2309 | |
3f76745e JM |
2310 | /* Size (in elements) of increments by which we may expand the |
2311 | decl_scope_table. */ | |
2312 | #define DECL_SCOPE_TABLE_INCREMENT 64 | |
bdb669cb | 2313 | |
3f76745e JM |
2314 | /* A pointer to the base of a list of references to DIE's that |
2315 | are uniquely identified by their tag, presence/absence of | |
2316 | children DIE's, and list of attribute/value pairs. */ | |
2317 | static dw_die_ref *abbrev_die_table; | |
71dfc51f | 2318 | |
3f76745e JM |
2319 | /* Number of elements currently allocated for abbrev_die_table. */ |
2320 | static unsigned abbrev_die_table_allocated; | |
bdb669cb | 2321 | |
3f76745e JM |
2322 | /* Number of elements in type_die_table currently in use. */ |
2323 | static unsigned abbrev_die_table_in_use; | |
bdb669cb | 2324 | |
3f76745e JM |
2325 | /* Size (in elements) of increments by which we may expand the |
2326 | abbrev_die_table. */ | |
2327 | #define ABBREV_DIE_TABLE_INCREMENT 256 | |
71dfc51f | 2328 | |
3f76745e JM |
2329 | /* A pointer to the base of a table that contains line information |
2330 | for each source code line in .text in the compilation unit. */ | |
2331 | static dw_line_info_ref line_info_table; | |
a3f97cbb | 2332 | |
3f76745e JM |
2333 | /* Number of elements currently allocated for line_info_table. */ |
2334 | static unsigned line_info_table_allocated; | |
71dfc51f | 2335 | |
3f76745e JM |
2336 | /* Number of elements in separate_line_info_table currently in use. */ |
2337 | static unsigned separate_line_info_table_in_use; | |
71dfc51f | 2338 | |
3f76745e JM |
2339 | /* A pointer to the base of a table that contains line information |
2340 | for each source code line outside of .text in the compilation unit. */ | |
2341 | static dw_separate_line_info_ref separate_line_info_table; | |
a3f97cbb | 2342 | |
3f76745e JM |
2343 | /* Number of elements currently allocated for separate_line_info_table. */ |
2344 | static unsigned separate_line_info_table_allocated; | |
71dfc51f | 2345 | |
3f76745e JM |
2346 | /* Number of elements in line_info_table currently in use. */ |
2347 | static unsigned line_info_table_in_use; | |
71dfc51f | 2348 | |
3f76745e JM |
2349 | /* Size (in elements) of increments by which we may expand the |
2350 | line_info_table. */ | |
2351 | #define LINE_INFO_TABLE_INCREMENT 1024 | |
a3f97cbb | 2352 | |
3f76745e JM |
2353 | /* A pointer to the base of a table that contains a list of publicly |
2354 | accessible names. */ | |
2355 | static pubname_ref pubname_table; | |
71dfc51f | 2356 | |
3f76745e JM |
2357 | /* Number of elements currently allocated for pubname_table. */ |
2358 | static unsigned pubname_table_allocated; | |
2359 | ||
2360 | /* Number of elements in pubname_table currently in use. */ | |
2361 | static unsigned pubname_table_in_use; | |
2362 | ||
2363 | /* Size (in elements) of increments by which we may expand the | |
2364 | pubname_table. */ | |
2365 | #define PUBNAME_TABLE_INCREMENT 64 | |
2366 | ||
2367 | /* A pointer to the base of a table that contains a list of publicly | |
2368 | accessible names. */ | |
2369 | static arange_ref arange_table; | |
71dfc51f | 2370 | |
3f76745e JM |
2371 | /* Number of elements currently allocated for arange_table. */ |
2372 | static unsigned arange_table_allocated; | |
a3f97cbb | 2373 | |
3f76745e JM |
2374 | /* Number of elements in arange_table currently in use. */ |
2375 | static unsigned arange_table_in_use; | |
71dfc51f | 2376 | |
3f76745e JM |
2377 | /* Size (in elements) of increments by which we may expand the |
2378 | arange_table. */ | |
2379 | #define ARANGE_TABLE_INCREMENT 64 | |
71dfc51f | 2380 | |
3f76745e JM |
2381 | /* A pointer to the base of a list of pending types which we haven't |
2382 | generated DIEs for yet, but which we will have to come back to | |
2383 | later on. */ | |
469ac993 | 2384 | |
3f76745e | 2385 | static tree *pending_types_list; |
71dfc51f | 2386 | |
3f76745e JM |
2387 | /* Number of elements currently allocated for the pending_types_list. */ |
2388 | static unsigned pending_types_allocated; | |
71dfc51f | 2389 | |
3f76745e JM |
2390 | /* Number of elements of pending_types_list currently in use. */ |
2391 | static unsigned pending_types; | |
a3f97cbb | 2392 | |
3f76745e JM |
2393 | /* Size (in elements) of increments by which we may expand the pending |
2394 | types list. Actually, a single hunk of space of this size should | |
2395 | be enough for most typical programs. */ | |
2396 | #define PENDING_TYPES_INCREMENT 64 | |
71dfc51f | 2397 | |
3f76745e JM |
2398 | /* Record whether the function being analyzed contains inlined functions. */ |
2399 | static int current_function_has_inlines; | |
2d8b0f3a | 2400 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
3f76745e | 2401 | static int comp_unit_has_inlines; |
2d8b0f3a | 2402 | #endif |
71dfc51f | 2403 | |
3f76745e JM |
2404 | /* A pointer to the ..._DECL node which we have most recently been working |
2405 | on. We keep this around just in case something about it looks screwy and | |
2406 | we want to tell the user what the source coordinates for the actual | |
2407 | declaration are. */ | |
2408 | static tree dwarf_last_decl; | |
a3f97cbb | 2409 | |
3f76745e | 2410 | /* Forward declarations for functions defined in this file. */ |
71dfc51f | 2411 | |
b170964a | 2412 | static void addr_const_to_string PROTO((dyn_string_t, rtx)); |
3f76745e JM |
2413 | static char *addr_to_string PROTO((rtx)); |
2414 | static int is_pseudo_reg PROTO((rtx)); | |
2415 | static tree type_main_variant PROTO((tree)); | |
2416 | static int is_tagged_type PROTO((tree)); | |
2417 | static char *dwarf_tag_name PROTO((unsigned)); | |
2418 | static char *dwarf_attr_name PROTO((unsigned)); | |
2419 | static char *dwarf_form_name PROTO((unsigned)); | |
2420 | static char *dwarf_stack_op_name PROTO((unsigned)); | |
487a6e06 | 2421 | #if 0 |
3f76745e | 2422 | static char *dwarf_type_encoding_name PROTO((unsigned)); |
487a6e06 | 2423 | #endif |
3f76745e JM |
2424 | static tree decl_ultimate_origin PROTO((tree)); |
2425 | static tree block_ultimate_origin PROTO((tree)); | |
2426 | static tree decl_class_context PROTO((tree)); | |
2427 | static void add_dwarf_attr PROTO((dw_die_ref, dw_attr_ref)); | |
2428 | static void add_AT_flag PROTO((dw_die_ref, | |
2429 | enum dwarf_attribute, | |
2430 | unsigned)); | |
2431 | static void add_AT_int PROTO((dw_die_ref, | |
2432 | enum dwarf_attribute, long)); | |
2433 | static void add_AT_unsigned PROTO((dw_die_ref, | |
2434 | enum dwarf_attribute, | |
2435 | unsigned long)); | |
2436 | static void add_AT_long_long PROTO((dw_die_ref, | |
2437 | enum dwarf_attribute, | |
2438 | unsigned long, unsigned long)); | |
2439 | static void add_AT_float PROTO((dw_die_ref, | |
2440 | enum dwarf_attribute, | |
2441 | unsigned, long *)); | |
2442 | static void add_AT_string PROTO((dw_die_ref, | |
2443 | enum dwarf_attribute, char *)); | |
2444 | static void add_AT_die_ref PROTO((dw_die_ref, | |
2445 | enum dwarf_attribute, | |
2446 | dw_die_ref)); | |
2447 | static void add_AT_fde_ref PROTO((dw_die_ref, | |
2448 | enum dwarf_attribute, | |
2449 | unsigned)); | |
2450 | static void add_AT_loc PROTO((dw_die_ref, | |
2451 | enum dwarf_attribute, | |
2452 | dw_loc_descr_ref)); | |
2453 | static void add_AT_addr PROTO((dw_die_ref, | |
2454 | enum dwarf_attribute, char *)); | |
2455 | static void add_AT_lbl_id PROTO((dw_die_ref, | |
2456 | enum dwarf_attribute, char *)); | |
956d6950 | 2457 | static void add_AT_section_offset PROTO((dw_die_ref, |
3f76745e JM |
2458 | enum dwarf_attribute, char *)); |
2459 | static int is_extern_subr_die PROTO((dw_die_ref)); | |
2460 | static dw_attr_ref get_AT PROTO((dw_die_ref, | |
2461 | enum dwarf_attribute)); | |
2462 | static char *get_AT_low_pc PROTO((dw_die_ref)); | |
2463 | static char *get_AT_hi_pc PROTO((dw_die_ref)); | |
2464 | static char *get_AT_string PROTO((dw_die_ref, | |
2465 | enum dwarf_attribute)); | |
2466 | static int get_AT_flag PROTO((dw_die_ref, | |
2467 | enum dwarf_attribute)); | |
2468 | static unsigned get_AT_unsigned PROTO((dw_die_ref, | |
2469 | enum dwarf_attribute)); | |
2470 | static int is_c_family PROTO((void)); | |
2471 | static int is_fortran PROTO((void)); | |
2472 | static void remove_AT PROTO((dw_die_ref, | |
2473 | enum dwarf_attribute)); | |
2474 | static void remove_children PROTO((dw_die_ref)); | |
2475 | static void add_child_die PROTO((dw_die_ref, dw_die_ref)); | |
2476 | static dw_die_ref new_die PROTO((enum dwarf_tag, dw_die_ref)); | |
2477 | static dw_die_ref lookup_type_die PROTO((tree)); | |
2478 | static void equate_type_number_to_die PROTO((tree, dw_die_ref)); | |
2479 | static dw_die_ref lookup_decl_die PROTO((tree)); | |
2480 | static void equate_decl_number_to_die PROTO((tree, dw_die_ref)); | |
2481 | static dw_loc_descr_ref new_loc_descr PROTO((enum dwarf_location_atom, | |
2482 | unsigned long, unsigned long)); | |
2483 | static void add_loc_descr PROTO((dw_loc_descr_ref *, | |
2484 | dw_loc_descr_ref)); | |
2485 | static void print_spaces PROTO((FILE *)); | |
2486 | static void print_die PROTO((dw_die_ref, FILE *)); | |
2487 | static void print_dwarf_line_table PROTO((FILE *)); | |
956d6950 | 2488 | static void add_sibling_attributes PROTO((dw_die_ref)); |
3f76745e JM |
2489 | static void build_abbrev_table PROTO((dw_die_ref)); |
2490 | static unsigned long size_of_string PROTO((char *)); | |
2491 | static unsigned long size_of_loc_descr PROTO((dw_loc_descr_ref)); | |
2492 | static unsigned long size_of_locs PROTO((dw_loc_descr_ref)); | |
2493 | static int constant_size PROTO((long unsigned)); | |
2494 | static unsigned long size_of_die PROTO((dw_die_ref)); | |
2495 | static void calc_die_sizes PROTO((dw_die_ref)); | |
2d8b0f3a | 2496 | static unsigned long size_of_line_prolog PROTO((void)); |
3f76745e JM |
2497 | static unsigned long size_of_line_info PROTO((void)); |
2498 | static unsigned long size_of_pubnames PROTO((void)); | |
2499 | static unsigned long size_of_aranges PROTO((void)); | |
2500 | static enum dwarf_form value_format PROTO((dw_val_ref)); | |
2501 | static void output_value_format PROTO((dw_val_ref)); | |
2502 | static void output_abbrev_section PROTO((void)); | |
2503 | static void output_loc_operands PROTO((dw_loc_descr_ref)); | |
2504 | static unsigned long sibling_offset PROTO((dw_die_ref)); | |
2505 | static void output_die PROTO((dw_die_ref)); | |
2506 | static void output_compilation_unit_header PROTO((void)); | |
2507 | static char *dwarf2_name PROTO((tree, int)); | |
2508 | static void add_pubname PROTO((tree, dw_die_ref)); | |
2509 | static void output_pubnames PROTO((void)); | |
2d8b0f3a JL |
2510 | static void add_arange PROTO((tree, dw_die_ref)); |
2511 | static void output_aranges PROTO((void)); | |
3f76745e JM |
2512 | static void output_line_info PROTO((void)); |
2513 | static int is_body_block PROTO((tree)); | |
2514 | static dw_die_ref base_type_die PROTO((tree)); | |
2515 | static tree root_type PROTO((tree)); | |
2516 | static int is_base_type PROTO((tree)); | |
2517 | static dw_die_ref modified_type_die PROTO((tree, int, int, dw_die_ref)); | |
2518 | static int type_is_enum PROTO((tree)); | |
4401bf24 | 2519 | static dw_loc_descr_ref reg_loc_descriptor PROTO((rtx)); |
3f76745e JM |
2520 | static dw_loc_descr_ref based_loc_descr PROTO((unsigned, long)); |
2521 | static int is_based_loc PROTO((rtx)); | |
2522 | static dw_loc_descr_ref mem_loc_descriptor PROTO((rtx)); | |
4401bf24 | 2523 | static dw_loc_descr_ref concat_loc_descriptor PROTO((rtx, rtx)); |
3f76745e JM |
2524 | static dw_loc_descr_ref loc_descriptor PROTO((rtx)); |
2525 | static unsigned ceiling PROTO((unsigned, unsigned)); | |
2526 | static tree field_type PROTO((tree)); | |
2527 | static unsigned simple_type_align_in_bits PROTO((tree)); | |
2528 | static unsigned simple_type_size_in_bits PROTO((tree)); | |
2529 | static unsigned field_byte_offset PROTO((tree)); | |
ef76d03b JW |
2530 | static void add_AT_location_description PROTO((dw_die_ref, |
2531 | enum dwarf_attribute, rtx)); | |
3f76745e JM |
2532 | static void add_data_member_location_attribute PROTO((dw_die_ref, tree)); |
2533 | static void add_const_value_attribute PROTO((dw_die_ref, rtx)); | |
2534 | static void add_location_or_const_value_attribute PROTO((dw_die_ref, tree)); | |
2535 | static void add_name_attribute PROTO((dw_die_ref, char *)); | |
2536 | static void add_bound_info PROTO((dw_die_ref, | |
2537 | enum dwarf_attribute, tree)); | |
2538 | static void add_subscript_info PROTO((dw_die_ref, tree)); | |
2539 | static void add_byte_size_attribute PROTO((dw_die_ref, tree)); | |
2540 | static void add_bit_offset_attribute PROTO((dw_die_ref, tree)); | |
2541 | static void add_bit_size_attribute PROTO((dw_die_ref, tree)); | |
2542 | static void add_prototyped_attribute PROTO((dw_die_ref, tree)); | |
2543 | static void add_abstract_origin_attribute PROTO((dw_die_ref, tree)); | |
2544 | static void add_pure_or_virtual_attribute PROTO((dw_die_ref, tree)); | |
2545 | static void add_src_coords_attributes PROTO((dw_die_ref, tree)); | |
2d8b0f3a | 2546 | static void add_name_and_src_coords_attributes PROTO((dw_die_ref, tree)); |
3f76745e JM |
2547 | static void push_decl_scope PROTO((tree)); |
2548 | static dw_die_ref scope_die_for PROTO((tree, dw_die_ref)); | |
2549 | static void pop_decl_scope PROTO((void)); | |
2550 | static void add_type_attribute PROTO((dw_die_ref, tree, int, int, | |
2551 | dw_die_ref)); | |
2552 | static char *type_tag PROTO((tree)); | |
2553 | static tree member_declared_type PROTO((tree)); | |
487a6e06 | 2554 | #if 0 |
3f76745e | 2555 | static char *decl_start_label PROTO((tree)); |
487a6e06 | 2556 | #endif |
2d8b0f3a | 2557 | static void gen_array_type_die PROTO((tree, dw_die_ref)); |
3f76745e | 2558 | static void gen_set_type_die PROTO((tree, dw_die_ref)); |
d6f4ec51 | 2559 | #if 0 |
3f76745e | 2560 | static void gen_entry_point_die PROTO((tree, dw_die_ref)); |
d6f4ec51 | 2561 | #endif |
3f76745e JM |
2562 | static void pend_type PROTO((tree)); |
2563 | static void output_pending_types_for_scope PROTO((dw_die_ref)); | |
2564 | static void gen_inlined_enumeration_type_die PROTO((tree, dw_die_ref)); | |
2565 | static void gen_inlined_structure_type_die PROTO((tree, dw_die_ref)); | |
2566 | static void gen_inlined_union_type_die PROTO((tree, dw_die_ref)); | |
2567 | static void gen_enumeration_type_die PROTO((tree, dw_die_ref)); | |
2568 | static dw_die_ref gen_formal_parameter_die PROTO((tree, dw_die_ref)); | |
2569 | static void gen_unspecified_parameters_die PROTO((tree, dw_die_ref)); | |
2570 | static void gen_formal_types_die PROTO((tree, dw_die_ref)); | |
2571 | static void gen_subprogram_die PROTO((tree, dw_die_ref)); | |
2572 | static void gen_variable_die PROTO((tree, dw_die_ref)); | |
2573 | static void gen_label_die PROTO((tree, dw_die_ref)); | |
2574 | static void gen_lexical_block_die PROTO((tree, dw_die_ref, int)); | |
2d8b0f3a | 2575 | static void gen_inlined_subroutine_die PROTO((tree, dw_die_ref, int)); |
3f76745e JM |
2576 | static void gen_field_die PROTO((tree, dw_die_ref)); |
2577 | static void gen_ptr_to_mbr_type_die PROTO((tree, dw_die_ref)); | |
2578 | static void gen_compile_unit_die PROTO((char *)); | |
2579 | static void gen_string_type_die PROTO((tree, dw_die_ref)); | |
2580 | static void gen_inheritance_die PROTO((tree, dw_die_ref)); | |
2581 | static void gen_member_die PROTO((tree, dw_die_ref)); | |
2582 | static void gen_struct_or_union_type_die PROTO((tree, dw_die_ref)); | |
2583 | static void gen_subroutine_type_die PROTO((tree, dw_die_ref)); | |
2584 | static void gen_typedef_die PROTO((tree, dw_die_ref)); | |
2585 | static void gen_type_die PROTO((tree, dw_die_ref)); | |
2586 | static void gen_tagged_type_instantiation_die PROTO((tree, dw_die_ref)); | |
2587 | static void gen_block_die PROTO((tree, dw_die_ref, int)); | |
2588 | static void decls_for_scope PROTO((tree, dw_die_ref, int)); | |
2589 | static int is_redundant_typedef PROTO((tree)); | |
2590 | static void gen_decl_die PROTO((tree, dw_die_ref)); | |
2591 | static unsigned lookup_filename PROTO((char *)); | |
71dfc51f | 2592 | |
3f76745e | 2593 | /* Section names used to hold DWARF debugging information. */ |
c53aa195 JM |
2594 | #ifndef DEBUG_INFO_SECTION |
2595 | #define DEBUG_INFO_SECTION ".debug_info" | |
3f76745e JM |
2596 | #endif |
2597 | #ifndef ABBREV_SECTION | |
2598 | #define ABBREV_SECTION ".debug_abbrev" | |
2599 | #endif | |
2600 | #ifndef ARANGES_SECTION | |
2601 | #define ARANGES_SECTION ".debug_aranges" | |
2602 | #endif | |
2603 | #ifndef DW_MACINFO_SECTION | |
2604 | #define DW_MACINFO_SECTION ".debug_macinfo" | |
2605 | #endif | |
c53aa195 JM |
2606 | #ifndef DEBUG_LINE_SECTION |
2607 | #define DEBUG_LINE_SECTION ".debug_line" | |
3f76745e JM |
2608 | #endif |
2609 | #ifndef LOC_SECTION | |
2610 | #define LOC_SECTION ".debug_loc" | |
2611 | #endif | |
2612 | #ifndef PUBNAMES_SECTION | |
2613 | #define PUBNAMES_SECTION ".debug_pubnames" | |
2614 | #endif | |
2615 | #ifndef STR_SECTION | |
2616 | #define STR_SECTION ".debug_str" | |
2617 | #endif | |
a3f97cbb | 2618 | |
956d6950 | 2619 | /* Standard ELF section names for compiled code and data. */ |
3f76745e JM |
2620 | #ifndef TEXT_SECTION |
2621 | #define TEXT_SECTION ".text" | |
2622 | #endif | |
2623 | #ifndef DATA_SECTION | |
2624 | #define DATA_SECTION ".data" | |
2625 | #endif | |
2626 | #ifndef BSS_SECTION | |
2627 | #define BSS_SECTION ".bss" | |
2628 | #endif | |
71dfc51f | 2629 | |
a3f97cbb | 2630 | |
3f76745e JM |
2631 | /* Definitions of defaults for formats and names of various special |
2632 | (artificial) labels which may be generated within this file (when the -g | |
2633 | options is used and DWARF_DEBUGGING_INFO is in effect. | |
2634 | If necessary, these may be overridden from within the tm.h file, but | |
2635 | typically, overriding these defaults is unnecessary. */ | |
a3f97cbb | 2636 | |
257ebd1f | 2637 | static char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 2638 | |
3f76745e JM |
2639 | #ifndef TEXT_END_LABEL |
2640 | #define TEXT_END_LABEL "Letext" | |
2641 | #endif | |
2642 | #ifndef DATA_END_LABEL | |
2643 | #define DATA_END_LABEL "Ledata" | |
2644 | #endif | |
2645 | #ifndef BSS_END_LABEL | |
2646 | #define BSS_END_LABEL "Lebss" | |
2647 | #endif | |
2648 | #ifndef INSN_LABEL_FMT | |
2649 | #define INSN_LABEL_FMT "LI%u_" | |
2650 | #endif | |
2651 | #ifndef BLOCK_BEGIN_LABEL | |
2652 | #define BLOCK_BEGIN_LABEL "LBB" | |
2653 | #endif | |
2654 | #ifndef BLOCK_END_LABEL | |
2655 | #define BLOCK_END_LABEL "LBE" | |
2656 | #endif | |
2657 | #ifndef BODY_BEGIN_LABEL | |
2658 | #define BODY_BEGIN_LABEL "Lbb" | |
2659 | #endif | |
2660 | #ifndef BODY_END_LABEL | |
2661 | #define BODY_END_LABEL "Lbe" | |
2662 | #endif | |
2663 | #ifndef LINE_CODE_LABEL | |
2664 | #define LINE_CODE_LABEL "LM" | |
2665 | #endif | |
2666 | #ifndef SEPARATE_LINE_CODE_LABEL | |
2667 | #define SEPARATE_LINE_CODE_LABEL "LSM" | |
2668 | #endif | |
71dfc51f | 2669 | |
3f76745e JM |
2670 | /* Convert a reference to the assembler name of a C-level name. This |
2671 | macro has the same effect as ASM_OUTPUT_LABELREF, but copies to | |
2672 | a string rather than writing to a file. */ | |
2673 | #ifndef ASM_NAME_TO_STRING | |
19283265 RH |
2674 | #define ASM_NAME_TO_STRING(STR, NAME) \ |
2675 | do { \ | |
2676 | if ((NAME)[0] == '*') \ | |
2677 | dyn_string_append (STR, NAME + 1); \ | |
2678 | else \ | |
2679 | { \ | |
2680 | dyn_string_append (STR, user_label_prefix); \ | |
2681 | dyn_string_append (STR, NAME); \ | |
2682 | } \ | |
2683 | } \ | |
3f76745e JM |
2684 | while (0) |
2685 | #endif | |
2686 | \f | |
2687 | /* Convert an integer constant expression into assembler syntax. Addition | |
2688 | and subtraction are the only arithmetic that may appear in these | |
2689 | expressions. This is an adaptation of output_addr_const in final.c. | |
2690 | Here, the target of the conversion is a string buffer. We can't use | |
2691 | output_addr_const directly, because it writes to a file. */ | |
71dfc51f | 2692 | |
3f76745e JM |
2693 | static void |
2694 | addr_const_to_string (str, x) | |
b170964a | 2695 | dyn_string_t str; |
3f76745e | 2696 | rtx x; |
a3f97cbb | 2697 | { |
3f76745e | 2698 | char buf1[256]; |
71dfc51f | 2699 | |
3f76745e | 2700 | restart: |
3f76745e JM |
2701 | switch (GET_CODE (x)) |
2702 | { | |
2703 | case PC: | |
2704 | if (flag_pic) | |
b170964a | 2705 | dyn_string_append (str, ","); |
3f76745e JM |
2706 | else |
2707 | abort (); | |
2708 | break; | |
71dfc51f | 2709 | |
3f76745e | 2710 | case SYMBOL_REF: |
b170964a | 2711 | ASM_NAME_TO_STRING (str, XSTR (x, 0)); |
3f76745e | 2712 | break; |
a3f97cbb | 2713 | |
3f76745e JM |
2714 | case LABEL_REF: |
2715 | ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (XEXP (x, 0))); | |
b170964a | 2716 | ASM_NAME_TO_STRING (str, buf1); |
3f76745e | 2717 | break; |
71dfc51f | 2718 | |
3f76745e JM |
2719 | case CODE_LABEL: |
2720 | ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (x)); | |
b170964a | 2721 | ASM_NAME_TO_STRING (str, buf1); |
3f76745e | 2722 | break; |
71dfc51f | 2723 | |
3f76745e JM |
2724 | case CONST_INT: |
2725 | sprintf (buf1, HOST_WIDE_INT_PRINT_DEC, INTVAL (x)); | |
b170964a | 2726 | dyn_string_append (str, buf1); |
3f76745e | 2727 | break; |
a3f97cbb | 2728 | |
3f76745e JM |
2729 | case CONST: |
2730 | /* This used to output parentheses around the expression, but that does | |
2731 | not work on the 386 (either ATT or BSD assembler). */ | |
b170964a | 2732 | addr_const_to_string (str, XEXP (x, 0)); |
3f76745e | 2733 | break; |
71dfc51f | 2734 | |
3f76745e JM |
2735 | case CONST_DOUBLE: |
2736 | if (GET_MODE (x) == VOIDmode) | |
2737 | { | |
2738 | /* We can use %d if the number is one word and positive. */ | |
2739 | if (CONST_DOUBLE_HIGH (x)) | |
2740 | sprintf (buf1, HOST_WIDE_INT_PRINT_DOUBLE_HEX, | |
2741 | CONST_DOUBLE_HIGH (x), CONST_DOUBLE_LOW (x)); | |
2742 | else if (CONST_DOUBLE_LOW (x) < 0) | |
2743 | sprintf (buf1, HOST_WIDE_INT_PRINT_HEX, CONST_DOUBLE_LOW (x)); | |
2744 | else | |
2745 | sprintf (buf1, HOST_WIDE_INT_PRINT_DEC, | |
2746 | CONST_DOUBLE_LOW (x)); | |
b170964a | 2747 | dyn_string_append (str, buf1); |
3f76745e JM |
2748 | } |
2749 | else | |
2750 | /* We can't handle floating point constants; PRINT_OPERAND must | |
2751 | handle them. */ | |
2752 | output_operand_lossage ("floating constant misused"); | |
2753 | break; | |
71dfc51f | 2754 | |
3f76745e JM |
2755 | case PLUS: |
2756 | /* Some assemblers need integer constants to appear last (eg masm). */ | |
2757 | if (GET_CODE (XEXP (x, 0)) == CONST_INT) | |
a3f97cbb | 2758 | { |
b170964a | 2759 | addr_const_to_string (str, XEXP (x, 1)); |
3f76745e | 2760 | if (INTVAL (XEXP (x, 0)) >= 0) |
b170964a | 2761 | dyn_string_append (str, "+"); |
3f76745e | 2762 | |
b170964a | 2763 | addr_const_to_string (str, XEXP (x, 0)); |
a3f97cbb | 2764 | } |
3f76745e JM |
2765 | else |
2766 | { | |
b170964a | 2767 | addr_const_to_string (str, XEXP (x, 0)); |
3f76745e | 2768 | if (INTVAL (XEXP (x, 1)) >= 0) |
b170964a | 2769 | dyn_string_append (str, "+"); |
71dfc51f | 2770 | |
b170964a | 2771 | addr_const_to_string (str, XEXP (x, 1)); |
3f76745e JM |
2772 | } |
2773 | break; | |
a3f97cbb | 2774 | |
3f76745e JM |
2775 | case MINUS: |
2776 | /* Avoid outputting things like x-x or x+5-x, since some assemblers | |
2777 | can't handle that. */ | |
2778 | x = simplify_subtraction (x); | |
2779 | if (GET_CODE (x) != MINUS) | |
2780 | goto restart; | |
71dfc51f | 2781 | |
b170964a MM |
2782 | addr_const_to_string (str, XEXP (x, 0)); |
2783 | dyn_string_append (str, "-"); | |
3f76745e JM |
2784 | if (GET_CODE (XEXP (x, 1)) == CONST_INT |
2785 | && INTVAL (XEXP (x, 1)) < 0) | |
a3f97cbb | 2786 | { |
b170964a MM |
2787 | dyn_string_append (str, ASM_OPEN_PAREN); |
2788 | addr_const_to_string (str, XEXP (x, 1)); | |
2789 | dyn_string_append (str, ASM_CLOSE_PAREN); | |
3f76745e JM |
2790 | } |
2791 | else | |
b170964a | 2792 | addr_const_to_string (str, XEXP (x, 1)); |
3f76745e | 2793 | break; |
71dfc51f | 2794 | |
3f76745e JM |
2795 | case ZERO_EXTEND: |
2796 | case SIGN_EXTEND: | |
b170964a | 2797 | addr_const_to_string (str, XEXP (x, 0)); |
3f76745e | 2798 | break; |
71dfc51f | 2799 | |
3f76745e JM |
2800 | default: |
2801 | output_operand_lossage ("invalid expression as operand"); | |
2802 | } | |
d291dd49 JM |
2803 | } |
2804 | ||
3f76745e JM |
2805 | /* Convert an address constant to a string, and return a pointer to |
2806 | a copy of the result, located on the heap. */ | |
71dfc51f | 2807 | |
3f76745e JM |
2808 | static char * |
2809 | addr_to_string (x) | |
2810 | rtx x; | |
d291dd49 | 2811 | { |
b170964a MM |
2812 | dyn_string_t ds = dyn_string_new (256); |
2813 | char *s; | |
2814 | ||
2815 | addr_const_to_string (ds, x); | |
2816 | ||
2817 | /* Return the dynamically allocated string, but free the | |
2818 | dyn_string_t itself. */ | |
2819 | s = ds->s; | |
2820 | free (ds); | |
2821 | return s; | |
d291dd49 JM |
2822 | } |
2823 | ||
956d6950 | 2824 | /* Test if rtl node points to a pseudo register. */ |
71dfc51f | 2825 | |
3f76745e JM |
2826 | static inline int |
2827 | is_pseudo_reg (rtl) | |
2828 | register rtx rtl; | |
d291dd49 | 2829 | { |
3f76745e JM |
2830 | return (((GET_CODE (rtl) == REG) && (REGNO (rtl) >= FIRST_PSEUDO_REGISTER)) |
2831 | || ((GET_CODE (rtl) == SUBREG) | |
2832 | && (REGNO (XEXP (rtl, 0)) >= FIRST_PSEUDO_REGISTER))); | |
d291dd49 JM |
2833 | } |
2834 | ||
3f76745e JM |
2835 | /* Return a reference to a type, with its const and volatile qualifiers |
2836 | removed. */ | |
71dfc51f | 2837 | |
3f76745e JM |
2838 | static inline tree |
2839 | type_main_variant (type) | |
2840 | register tree type; | |
d291dd49 | 2841 | { |
3f76745e | 2842 | type = TYPE_MAIN_VARIANT (type); |
71dfc51f | 2843 | |
3f76745e JM |
2844 | /* There really should be only one main variant among any group of variants |
2845 | of a given type (and all of the MAIN_VARIANT values for all members of | |
2846 | the group should point to that one type) but sometimes the C front-end | |
2847 | messes this up for array types, so we work around that bug here. */ | |
71dfc51f | 2848 | |
3f76745e JM |
2849 | if (TREE_CODE (type) == ARRAY_TYPE) |
2850 | while (type != TYPE_MAIN_VARIANT (type)) | |
2851 | type = TYPE_MAIN_VARIANT (type); | |
2852 | ||
2853 | return type; | |
a3f97cbb JW |
2854 | } |
2855 | ||
3f76745e | 2856 | /* Return non-zero if the given type node represents a tagged type. */ |
71dfc51f RK |
2857 | |
2858 | static inline int | |
3f76745e JM |
2859 | is_tagged_type (type) |
2860 | register tree type; | |
bdb669cb | 2861 | { |
3f76745e | 2862 | register enum tree_code code = TREE_CODE (type); |
71dfc51f | 2863 | |
3f76745e JM |
2864 | return (code == RECORD_TYPE || code == UNION_TYPE |
2865 | || code == QUAL_UNION_TYPE || code == ENUMERAL_TYPE); | |
bdb669cb JM |
2866 | } |
2867 | ||
3f76745e | 2868 | /* Convert a DIE tag into its string name. */ |
71dfc51f | 2869 | |
3f76745e JM |
2870 | static char * |
2871 | dwarf_tag_name (tag) | |
2872 | register unsigned tag; | |
bdb669cb | 2873 | { |
3f76745e JM |
2874 | switch (tag) |
2875 | { | |
2876 | case DW_TAG_padding: | |
2877 | return "DW_TAG_padding"; | |
2878 | case DW_TAG_array_type: | |
2879 | return "DW_TAG_array_type"; | |
2880 | case DW_TAG_class_type: | |
2881 | return "DW_TAG_class_type"; | |
2882 | case DW_TAG_entry_point: | |
2883 | return "DW_TAG_entry_point"; | |
2884 | case DW_TAG_enumeration_type: | |
2885 | return "DW_TAG_enumeration_type"; | |
2886 | case DW_TAG_formal_parameter: | |
2887 | return "DW_TAG_formal_parameter"; | |
2888 | case DW_TAG_imported_declaration: | |
2889 | return "DW_TAG_imported_declaration"; | |
2890 | case DW_TAG_label: | |
2891 | return "DW_TAG_label"; | |
2892 | case DW_TAG_lexical_block: | |
2893 | return "DW_TAG_lexical_block"; | |
2894 | case DW_TAG_member: | |
2895 | return "DW_TAG_member"; | |
2896 | case DW_TAG_pointer_type: | |
2897 | return "DW_TAG_pointer_type"; | |
2898 | case DW_TAG_reference_type: | |
2899 | return "DW_TAG_reference_type"; | |
2900 | case DW_TAG_compile_unit: | |
2901 | return "DW_TAG_compile_unit"; | |
2902 | case DW_TAG_string_type: | |
2903 | return "DW_TAG_string_type"; | |
2904 | case DW_TAG_structure_type: | |
2905 | return "DW_TAG_structure_type"; | |
2906 | case DW_TAG_subroutine_type: | |
2907 | return "DW_TAG_subroutine_type"; | |
2908 | case DW_TAG_typedef: | |
2909 | return "DW_TAG_typedef"; | |
2910 | case DW_TAG_union_type: | |
2911 | return "DW_TAG_union_type"; | |
2912 | case DW_TAG_unspecified_parameters: | |
2913 | return "DW_TAG_unspecified_parameters"; | |
2914 | case DW_TAG_variant: | |
2915 | return "DW_TAG_variant"; | |
2916 | case DW_TAG_common_block: | |
2917 | return "DW_TAG_common_block"; | |
2918 | case DW_TAG_common_inclusion: | |
2919 | return "DW_TAG_common_inclusion"; | |
2920 | case DW_TAG_inheritance: | |
2921 | return "DW_TAG_inheritance"; | |
2922 | case DW_TAG_inlined_subroutine: | |
2923 | return "DW_TAG_inlined_subroutine"; | |
2924 | case DW_TAG_module: | |
2925 | return "DW_TAG_module"; | |
2926 | case DW_TAG_ptr_to_member_type: | |
2927 | return "DW_TAG_ptr_to_member_type"; | |
2928 | case DW_TAG_set_type: | |
2929 | return "DW_TAG_set_type"; | |
2930 | case DW_TAG_subrange_type: | |
2931 | return "DW_TAG_subrange_type"; | |
2932 | case DW_TAG_with_stmt: | |
2933 | return "DW_TAG_with_stmt"; | |
2934 | case DW_TAG_access_declaration: | |
2935 | return "DW_TAG_access_declaration"; | |
2936 | case DW_TAG_base_type: | |
2937 | return "DW_TAG_base_type"; | |
2938 | case DW_TAG_catch_block: | |
2939 | return "DW_TAG_catch_block"; | |
2940 | case DW_TAG_const_type: | |
2941 | return "DW_TAG_const_type"; | |
2942 | case DW_TAG_constant: | |
2943 | return "DW_TAG_constant"; | |
2944 | case DW_TAG_enumerator: | |
2945 | return "DW_TAG_enumerator"; | |
2946 | case DW_TAG_file_type: | |
2947 | return "DW_TAG_file_type"; | |
2948 | case DW_TAG_friend: | |
2949 | return "DW_TAG_friend"; | |
2950 | case DW_TAG_namelist: | |
2951 | return "DW_TAG_namelist"; | |
2952 | case DW_TAG_namelist_item: | |
2953 | return "DW_TAG_namelist_item"; | |
2954 | case DW_TAG_packed_type: | |
2955 | return "DW_TAG_packed_type"; | |
2956 | case DW_TAG_subprogram: | |
2957 | return "DW_TAG_subprogram"; | |
2958 | case DW_TAG_template_type_param: | |
2959 | return "DW_TAG_template_type_param"; | |
2960 | case DW_TAG_template_value_param: | |
2961 | return "DW_TAG_template_value_param"; | |
2962 | case DW_TAG_thrown_type: | |
2963 | return "DW_TAG_thrown_type"; | |
2964 | case DW_TAG_try_block: | |
2965 | return "DW_TAG_try_block"; | |
2966 | case DW_TAG_variant_part: | |
2967 | return "DW_TAG_variant_part"; | |
2968 | case DW_TAG_variable: | |
2969 | return "DW_TAG_variable"; | |
2970 | case DW_TAG_volatile_type: | |
2971 | return "DW_TAG_volatile_type"; | |
2972 | case DW_TAG_MIPS_loop: | |
2973 | return "DW_TAG_MIPS_loop"; | |
2974 | case DW_TAG_format_label: | |
2975 | return "DW_TAG_format_label"; | |
2976 | case DW_TAG_function_template: | |
2977 | return "DW_TAG_function_template"; | |
2978 | case DW_TAG_class_template: | |
2979 | return "DW_TAG_class_template"; | |
2980 | default: | |
2981 | return "DW_TAG_<unknown>"; | |
2982 | } | |
bdb669cb | 2983 | } |
a3f97cbb | 2984 | |
3f76745e | 2985 | /* Convert a DWARF attribute code into its string name. */ |
71dfc51f | 2986 | |
3f76745e JM |
2987 | static char * |
2988 | dwarf_attr_name (attr) | |
2989 | register unsigned attr; | |
4b674448 | 2990 | { |
3f76745e | 2991 | switch (attr) |
4b674448 | 2992 | { |
3f76745e JM |
2993 | case DW_AT_sibling: |
2994 | return "DW_AT_sibling"; | |
2995 | case DW_AT_location: | |
2996 | return "DW_AT_location"; | |
2997 | case DW_AT_name: | |
2998 | return "DW_AT_name"; | |
2999 | case DW_AT_ordering: | |
3000 | return "DW_AT_ordering"; | |
3001 | case DW_AT_subscr_data: | |
3002 | return "DW_AT_subscr_data"; | |
3003 | case DW_AT_byte_size: | |
3004 | return "DW_AT_byte_size"; | |
3005 | case DW_AT_bit_offset: | |
3006 | return "DW_AT_bit_offset"; | |
3007 | case DW_AT_bit_size: | |
3008 | return "DW_AT_bit_size"; | |
3009 | case DW_AT_element_list: | |
3010 | return "DW_AT_element_list"; | |
3011 | case DW_AT_stmt_list: | |
3012 | return "DW_AT_stmt_list"; | |
3013 | case DW_AT_low_pc: | |
3014 | return "DW_AT_low_pc"; | |
3015 | case DW_AT_high_pc: | |
3016 | return "DW_AT_high_pc"; | |
3017 | case DW_AT_language: | |
3018 | return "DW_AT_language"; | |
3019 | case DW_AT_member: | |
3020 | return "DW_AT_member"; | |
3021 | case DW_AT_discr: | |
3022 | return "DW_AT_discr"; | |
3023 | case DW_AT_discr_value: | |
3024 | return "DW_AT_discr_value"; | |
3025 | case DW_AT_visibility: | |
3026 | return "DW_AT_visibility"; | |
3027 | case DW_AT_import: | |
3028 | return "DW_AT_import"; | |
3029 | case DW_AT_string_length: | |
3030 | return "DW_AT_string_length"; | |
3031 | case DW_AT_common_reference: | |
3032 | return "DW_AT_common_reference"; | |
3033 | case DW_AT_comp_dir: | |
3034 | return "DW_AT_comp_dir"; | |
3035 | case DW_AT_const_value: | |
3036 | return "DW_AT_const_value"; | |
3037 | case DW_AT_containing_type: | |
3038 | return "DW_AT_containing_type"; | |
3039 | case DW_AT_default_value: | |
3040 | return "DW_AT_default_value"; | |
3041 | case DW_AT_inline: | |
3042 | return "DW_AT_inline"; | |
3043 | case DW_AT_is_optional: | |
3044 | return "DW_AT_is_optional"; | |
3045 | case DW_AT_lower_bound: | |
3046 | return "DW_AT_lower_bound"; | |
3047 | case DW_AT_producer: | |
3048 | return "DW_AT_producer"; | |
3049 | case DW_AT_prototyped: | |
3050 | return "DW_AT_prototyped"; | |
3051 | case DW_AT_return_addr: | |
3052 | return "DW_AT_return_addr"; | |
3053 | case DW_AT_start_scope: | |
3054 | return "DW_AT_start_scope"; | |
3055 | case DW_AT_stride_size: | |
3056 | return "DW_AT_stride_size"; | |
3057 | case DW_AT_upper_bound: | |
3058 | return "DW_AT_upper_bound"; | |
3059 | case DW_AT_abstract_origin: | |
3060 | return "DW_AT_abstract_origin"; | |
3061 | case DW_AT_accessibility: | |
3062 | return "DW_AT_accessibility"; | |
3063 | case DW_AT_address_class: | |
3064 | return "DW_AT_address_class"; | |
3065 | case DW_AT_artificial: | |
3066 | return "DW_AT_artificial"; | |
3067 | case DW_AT_base_types: | |
3068 | return "DW_AT_base_types"; | |
3069 | case DW_AT_calling_convention: | |
3070 | return "DW_AT_calling_convention"; | |
3071 | case DW_AT_count: | |
3072 | return "DW_AT_count"; | |
3073 | case DW_AT_data_member_location: | |
3074 | return "DW_AT_data_member_location"; | |
3075 | case DW_AT_decl_column: | |
3076 | return "DW_AT_decl_column"; | |
3077 | case DW_AT_decl_file: | |
3078 | return "DW_AT_decl_file"; | |
3079 | case DW_AT_decl_line: | |
3080 | return "DW_AT_decl_line"; | |
3081 | case DW_AT_declaration: | |
3082 | return "DW_AT_declaration"; | |
3083 | case DW_AT_discr_list: | |
3084 | return "DW_AT_discr_list"; | |
3085 | case DW_AT_encoding: | |
3086 | return "DW_AT_encoding"; | |
3087 | case DW_AT_external: | |
3088 | return "DW_AT_external"; | |
3089 | case DW_AT_frame_base: | |
3090 | return "DW_AT_frame_base"; | |
3091 | case DW_AT_friend: | |
3092 | return "DW_AT_friend"; | |
3093 | case DW_AT_identifier_case: | |
3094 | return "DW_AT_identifier_case"; | |
3095 | case DW_AT_macro_info: | |
3096 | return "DW_AT_macro_info"; | |
3097 | case DW_AT_namelist_items: | |
3098 | return "DW_AT_namelist_items"; | |
3099 | case DW_AT_priority: | |
3100 | return "DW_AT_priority"; | |
3101 | case DW_AT_segment: | |
3102 | return "DW_AT_segment"; | |
3103 | case DW_AT_specification: | |
3104 | return "DW_AT_specification"; | |
3105 | case DW_AT_static_link: | |
3106 | return "DW_AT_static_link"; | |
3107 | case DW_AT_type: | |
3108 | return "DW_AT_type"; | |
3109 | case DW_AT_use_location: | |
3110 | return "DW_AT_use_location"; | |
3111 | case DW_AT_variable_parameter: | |
3112 | return "DW_AT_variable_parameter"; | |
3113 | case DW_AT_virtuality: | |
3114 | return "DW_AT_virtuality"; | |
3115 | case DW_AT_vtable_elem_location: | |
3116 | return "DW_AT_vtable_elem_location"; | |
71dfc51f | 3117 | |
3f76745e JM |
3118 | case DW_AT_MIPS_fde: |
3119 | return "DW_AT_MIPS_fde"; | |
3120 | case DW_AT_MIPS_loop_begin: | |
3121 | return "DW_AT_MIPS_loop_begin"; | |
3122 | case DW_AT_MIPS_tail_loop_begin: | |
3123 | return "DW_AT_MIPS_tail_loop_begin"; | |
3124 | case DW_AT_MIPS_epilog_begin: | |
3125 | return "DW_AT_MIPS_epilog_begin"; | |
3126 | case DW_AT_MIPS_loop_unroll_factor: | |
3127 | return "DW_AT_MIPS_loop_unroll_factor"; | |
3128 | case DW_AT_MIPS_software_pipeline_depth: | |
3129 | return "DW_AT_MIPS_software_pipeline_depth"; | |
3130 | case DW_AT_MIPS_linkage_name: | |
3131 | return "DW_AT_MIPS_linkage_name"; | |
3132 | case DW_AT_MIPS_stride: | |
3133 | return "DW_AT_MIPS_stride"; | |
3134 | case DW_AT_MIPS_abstract_name: | |
3135 | return "DW_AT_MIPS_abstract_name"; | |
3136 | case DW_AT_MIPS_clone_origin: | |
3137 | return "DW_AT_MIPS_clone_origin"; | |
3138 | case DW_AT_MIPS_has_inlines: | |
3139 | return "DW_AT_MIPS_has_inlines"; | |
71dfc51f | 3140 | |
3f76745e JM |
3141 | case DW_AT_sf_names: |
3142 | return "DW_AT_sf_names"; | |
3143 | case DW_AT_src_info: | |
3144 | return "DW_AT_src_info"; | |
3145 | case DW_AT_mac_info: | |
3146 | return "DW_AT_mac_info"; | |
3147 | case DW_AT_src_coords: | |
3148 | return "DW_AT_src_coords"; | |
3149 | case DW_AT_body_begin: | |
3150 | return "DW_AT_body_begin"; | |
3151 | case DW_AT_body_end: | |
3152 | return "DW_AT_body_end"; | |
3153 | default: | |
3154 | return "DW_AT_<unknown>"; | |
4b674448 JM |
3155 | } |
3156 | } | |
3157 | ||
3f76745e | 3158 | /* Convert a DWARF value form code into its string name. */ |
71dfc51f | 3159 | |
3f76745e JM |
3160 | static char * |
3161 | dwarf_form_name (form) | |
3162 | register unsigned form; | |
4b674448 | 3163 | { |
3f76745e | 3164 | switch (form) |
4b674448 | 3165 | { |
3f76745e JM |
3166 | case DW_FORM_addr: |
3167 | return "DW_FORM_addr"; | |
3168 | case DW_FORM_block2: | |
3169 | return "DW_FORM_block2"; | |
3170 | case DW_FORM_block4: | |
3171 | return "DW_FORM_block4"; | |
3172 | case DW_FORM_data2: | |
3173 | return "DW_FORM_data2"; | |
3174 | case DW_FORM_data4: | |
3175 | return "DW_FORM_data4"; | |
3176 | case DW_FORM_data8: | |
3177 | return "DW_FORM_data8"; | |
3178 | case DW_FORM_string: | |
3179 | return "DW_FORM_string"; | |
3180 | case DW_FORM_block: | |
3181 | return "DW_FORM_block"; | |
3182 | case DW_FORM_block1: | |
3183 | return "DW_FORM_block1"; | |
3184 | case DW_FORM_data1: | |
3185 | return "DW_FORM_data1"; | |
3186 | case DW_FORM_flag: | |
3187 | return "DW_FORM_flag"; | |
3188 | case DW_FORM_sdata: | |
3189 | return "DW_FORM_sdata"; | |
3190 | case DW_FORM_strp: | |
3191 | return "DW_FORM_strp"; | |
3192 | case DW_FORM_udata: | |
3193 | return "DW_FORM_udata"; | |
3194 | case DW_FORM_ref_addr: | |
3195 | return "DW_FORM_ref_addr"; | |
3196 | case DW_FORM_ref1: | |
3197 | return "DW_FORM_ref1"; | |
3198 | case DW_FORM_ref2: | |
3199 | return "DW_FORM_ref2"; | |
3200 | case DW_FORM_ref4: | |
3201 | return "DW_FORM_ref4"; | |
3202 | case DW_FORM_ref8: | |
3203 | return "DW_FORM_ref8"; | |
3204 | case DW_FORM_ref_udata: | |
3205 | return "DW_FORM_ref_udata"; | |
3206 | case DW_FORM_indirect: | |
3207 | return "DW_FORM_indirect"; | |
3208 | default: | |
3209 | return "DW_FORM_<unknown>"; | |
4b674448 JM |
3210 | } |
3211 | } | |
3212 | ||
3f76745e | 3213 | /* Convert a DWARF stack opcode into its string name. */ |
71dfc51f | 3214 | |
3f76745e JM |
3215 | static char * |
3216 | dwarf_stack_op_name (op) | |
3217 | register unsigned op; | |
a3f97cbb | 3218 | { |
3f76745e | 3219 | switch (op) |
a3f97cbb | 3220 | { |
3f76745e JM |
3221 | case DW_OP_addr: |
3222 | return "DW_OP_addr"; | |
3223 | case DW_OP_deref: | |
3224 | return "DW_OP_deref"; | |
3225 | case DW_OP_const1u: | |
3226 | return "DW_OP_const1u"; | |
3227 | case DW_OP_const1s: | |
3228 | return "DW_OP_const1s"; | |
3229 | case DW_OP_const2u: | |
3230 | return "DW_OP_const2u"; | |
3231 | case DW_OP_const2s: | |
3232 | return "DW_OP_const2s"; | |
3233 | case DW_OP_const4u: | |
3234 | return "DW_OP_const4u"; | |
3235 | case DW_OP_const4s: | |
3236 | return "DW_OP_const4s"; | |
3237 | case DW_OP_const8u: | |
3238 | return "DW_OP_const8u"; | |
3239 | case DW_OP_const8s: | |
3240 | return "DW_OP_const8s"; | |
3241 | case DW_OP_constu: | |
3242 | return "DW_OP_constu"; | |
3243 | case DW_OP_consts: | |
3244 | return "DW_OP_consts"; | |
3245 | case DW_OP_dup: | |
3246 | return "DW_OP_dup"; | |
3247 | case DW_OP_drop: | |
3248 | return "DW_OP_drop"; | |
3249 | case DW_OP_over: | |
3250 | return "DW_OP_over"; | |
3251 | case DW_OP_pick: | |
3252 | return "DW_OP_pick"; | |
3253 | case DW_OP_swap: | |
3254 | return "DW_OP_swap"; | |
3255 | case DW_OP_rot: | |
3256 | return "DW_OP_rot"; | |
3257 | case DW_OP_xderef: | |
3258 | return "DW_OP_xderef"; | |
3259 | case DW_OP_abs: | |
3260 | return "DW_OP_abs"; | |
3261 | case DW_OP_and: | |
3262 | return "DW_OP_and"; | |
3263 | case DW_OP_div: | |
3264 | return "DW_OP_div"; | |
3265 | case DW_OP_minus: | |
3266 | return "DW_OP_minus"; | |
3267 | case DW_OP_mod: | |
3268 | return "DW_OP_mod"; | |
3269 | case DW_OP_mul: | |
3270 | return "DW_OP_mul"; | |
3271 | case DW_OP_neg: | |
3272 | return "DW_OP_neg"; | |
3273 | case DW_OP_not: | |
3274 | return "DW_OP_not"; | |
3275 | case DW_OP_or: | |
3276 | return "DW_OP_or"; | |
3277 | case DW_OP_plus: | |
3278 | return "DW_OP_plus"; | |
3279 | case DW_OP_plus_uconst: | |
3280 | return "DW_OP_plus_uconst"; | |
3281 | case DW_OP_shl: | |
3282 | return "DW_OP_shl"; | |
3283 | case DW_OP_shr: | |
3284 | return "DW_OP_shr"; | |
3285 | case DW_OP_shra: | |
3286 | return "DW_OP_shra"; | |
3287 | case DW_OP_xor: | |
3288 | return "DW_OP_xor"; | |
3289 | case DW_OP_bra: | |
3290 | return "DW_OP_bra"; | |
3291 | case DW_OP_eq: | |
3292 | return "DW_OP_eq"; | |
3293 | case DW_OP_ge: | |
3294 | return "DW_OP_ge"; | |
3295 | case DW_OP_gt: | |
3296 | return "DW_OP_gt"; | |
3297 | case DW_OP_le: | |
3298 | return "DW_OP_le"; | |
3299 | case DW_OP_lt: | |
3300 | return "DW_OP_lt"; | |
3301 | case DW_OP_ne: | |
3302 | return "DW_OP_ne"; | |
3303 | case DW_OP_skip: | |
3304 | return "DW_OP_skip"; | |
3305 | case DW_OP_lit0: | |
3306 | return "DW_OP_lit0"; | |
3307 | case DW_OP_lit1: | |
3308 | return "DW_OP_lit1"; | |
3309 | case DW_OP_lit2: | |
3310 | return "DW_OP_lit2"; | |
3311 | case DW_OP_lit3: | |
3312 | return "DW_OP_lit3"; | |
3313 | case DW_OP_lit4: | |
3314 | return "DW_OP_lit4"; | |
3315 | case DW_OP_lit5: | |
3316 | return "DW_OP_lit5"; | |
3317 | case DW_OP_lit6: | |
3318 | return "DW_OP_lit6"; | |
3319 | case DW_OP_lit7: | |
3320 | return "DW_OP_lit7"; | |
3321 | case DW_OP_lit8: | |
3322 | return "DW_OP_lit8"; | |
3323 | case DW_OP_lit9: | |
3324 | return "DW_OP_lit9"; | |
3325 | case DW_OP_lit10: | |
3326 | return "DW_OP_lit10"; | |
3327 | case DW_OP_lit11: | |
3328 | return "DW_OP_lit11"; | |
3329 | case DW_OP_lit12: | |
3330 | return "DW_OP_lit12"; | |
3331 | case DW_OP_lit13: | |
3332 | return "DW_OP_lit13"; | |
3333 | case DW_OP_lit14: | |
3334 | return "DW_OP_lit14"; | |
3335 | case DW_OP_lit15: | |
3336 | return "DW_OP_lit15"; | |
3337 | case DW_OP_lit16: | |
3338 | return "DW_OP_lit16"; | |
3339 | case DW_OP_lit17: | |
3340 | return "DW_OP_lit17"; | |
3341 | case DW_OP_lit18: | |
3342 | return "DW_OP_lit18"; | |
3343 | case DW_OP_lit19: | |
3344 | return "DW_OP_lit19"; | |
3345 | case DW_OP_lit20: | |
3346 | return "DW_OP_lit20"; | |
3347 | case DW_OP_lit21: | |
3348 | return "DW_OP_lit21"; | |
3349 | case DW_OP_lit22: | |
3350 | return "DW_OP_lit22"; | |
3351 | case DW_OP_lit23: | |
3352 | return "DW_OP_lit23"; | |
3353 | case DW_OP_lit24: | |
3354 | return "DW_OP_lit24"; | |
3355 | case DW_OP_lit25: | |
3356 | return "DW_OP_lit25"; | |
3357 | case DW_OP_lit26: | |
3358 | return "DW_OP_lit26"; | |
3359 | case DW_OP_lit27: | |
3360 | return "DW_OP_lit27"; | |
3361 | case DW_OP_lit28: | |
3362 | return "DW_OP_lit28"; | |
3363 | case DW_OP_lit29: | |
3364 | return "DW_OP_lit29"; | |
3365 | case DW_OP_lit30: | |
3366 | return "DW_OP_lit30"; | |
3367 | case DW_OP_lit31: | |
3368 | return "DW_OP_lit31"; | |
3369 | case DW_OP_reg0: | |
3370 | return "DW_OP_reg0"; | |
3371 | case DW_OP_reg1: | |
3372 | return "DW_OP_reg1"; | |
3373 | case DW_OP_reg2: | |
3374 | return "DW_OP_reg2"; | |
3375 | case DW_OP_reg3: | |
3376 | return "DW_OP_reg3"; | |
3377 | case DW_OP_reg4: | |
3378 | return "DW_OP_reg4"; | |
3379 | case DW_OP_reg5: | |
3380 | return "DW_OP_reg5"; | |
3381 | case DW_OP_reg6: | |
3382 | return "DW_OP_reg6"; | |
3383 | case DW_OP_reg7: | |
3384 | return "DW_OP_reg7"; | |
3385 | case DW_OP_reg8: | |
3386 | return "DW_OP_reg8"; | |
3387 | case DW_OP_reg9: | |
3388 | return "DW_OP_reg9"; | |
3389 | case DW_OP_reg10: | |
3390 | return "DW_OP_reg10"; | |
3391 | case DW_OP_reg11: | |
3392 | return "DW_OP_reg11"; | |
3393 | case DW_OP_reg12: | |
3394 | return "DW_OP_reg12"; | |
3395 | case DW_OP_reg13: | |
3396 | return "DW_OP_reg13"; | |
3397 | case DW_OP_reg14: | |
3398 | return "DW_OP_reg14"; | |
3399 | case DW_OP_reg15: | |
3400 | return "DW_OP_reg15"; | |
3401 | case DW_OP_reg16: | |
3402 | return "DW_OP_reg16"; | |
3403 | case DW_OP_reg17: | |
3404 | return "DW_OP_reg17"; | |
3405 | case DW_OP_reg18: | |
3406 | return "DW_OP_reg18"; | |
3407 | case DW_OP_reg19: | |
3408 | return "DW_OP_reg19"; | |
3409 | case DW_OP_reg20: | |
3410 | return "DW_OP_reg20"; | |
3411 | case DW_OP_reg21: | |
3412 | return "DW_OP_reg21"; | |
3413 | case DW_OP_reg22: | |
3414 | return "DW_OP_reg22"; | |
3415 | case DW_OP_reg23: | |
3416 | return "DW_OP_reg23"; | |
3417 | case DW_OP_reg24: | |
3418 | return "DW_OP_reg24"; | |
3419 | case DW_OP_reg25: | |
3420 | return "DW_OP_reg25"; | |
3421 | case DW_OP_reg26: | |
3422 | return "DW_OP_reg26"; | |
3423 | case DW_OP_reg27: | |
3424 | return "DW_OP_reg27"; | |
3425 | case DW_OP_reg28: | |
3426 | return "DW_OP_reg28"; | |
3427 | case DW_OP_reg29: | |
3428 | return "DW_OP_reg29"; | |
3429 | case DW_OP_reg30: | |
3430 | return "DW_OP_reg30"; | |
3431 | case DW_OP_reg31: | |
3432 | return "DW_OP_reg31"; | |
3433 | case DW_OP_breg0: | |
3434 | return "DW_OP_breg0"; | |
3435 | case DW_OP_breg1: | |
3436 | return "DW_OP_breg1"; | |
3437 | case DW_OP_breg2: | |
3438 | return "DW_OP_breg2"; | |
3439 | case DW_OP_breg3: | |
3440 | return "DW_OP_breg3"; | |
3441 | case DW_OP_breg4: | |
3442 | return "DW_OP_breg4"; | |
3443 | case DW_OP_breg5: | |
3444 | return "DW_OP_breg5"; | |
3445 | case DW_OP_breg6: | |
3446 | return "DW_OP_breg6"; | |
3447 | case DW_OP_breg7: | |
3448 | return "DW_OP_breg7"; | |
3449 | case DW_OP_breg8: | |
3450 | return "DW_OP_breg8"; | |
3451 | case DW_OP_breg9: | |
3452 | return "DW_OP_breg9"; | |
3453 | case DW_OP_breg10: | |
3454 | return "DW_OP_breg10"; | |
3455 | case DW_OP_breg11: | |
3456 | return "DW_OP_breg11"; | |
3457 | case DW_OP_breg12: | |
3458 | return "DW_OP_breg12"; | |
3459 | case DW_OP_breg13: | |
3460 | return "DW_OP_breg13"; | |
3461 | case DW_OP_breg14: | |
3462 | return "DW_OP_breg14"; | |
3463 | case DW_OP_breg15: | |
3464 | return "DW_OP_breg15"; | |
3465 | case DW_OP_breg16: | |
3466 | return "DW_OP_breg16"; | |
3467 | case DW_OP_breg17: | |
3468 | return "DW_OP_breg17"; | |
3469 | case DW_OP_breg18: | |
3470 | return "DW_OP_breg18"; | |
3471 | case DW_OP_breg19: | |
3472 | return "DW_OP_breg19"; | |
3473 | case DW_OP_breg20: | |
3474 | return "DW_OP_breg20"; | |
3475 | case DW_OP_breg21: | |
3476 | return "DW_OP_breg21"; | |
3477 | case DW_OP_breg22: | |
3478 | return "DW_OP_breg22"; | |
3479 | case DW_OP_breg23: | |
3480 | return "DW_OP_breg23"; | |
3481 | case DW_OP_breg24: | |
3482 | return "DW_OP_breg24"; | |
3483 | case DW_OP_breg25: | |
3484 | return "DW_OP_breg25"; | |
3485 | case DW_OP_breg26: | |
3486 | return "DW_OP_breg26"; | |
3487 | case DW_OP_breg27: | |
3488 | return "DW_OP_breg27"; | |
3489 | case DW_OP_breg28: | |
3490 | return "DW_OP_breg28"; | |
3491 | case DW_OP_breg29: | |
3492 | return "DW_OP_breg29"; | |
3493 | case DW_OP_breg30: | |
3494 | return "DW_OP_breg30"; | |
3495 | case DW_OP_breg31: | |
3496 | return "DW_OP_breg31"; | |
3497 | case DW_OP_regx: | |
3498 | return "DW_OP_regx"; | |
3499 | case DW_OP_fbreg: | |
3500 | return "DW_OP_fbreg"; | |
3501 | case DW_OP_bregx: | |
3502 | return "DW_OP_bregx"; | |
3503 | case DW_OP_piece: | |
3504 | return "DW_OP_piece"; | |
3505 | case DW_OP_deref_size: | |
3506 | return "DW_OP_deref_size"; | |
3507 | case DW_OP_xderef_size: | |
3508 | return "DW_OP_xderef_size"; | |
3509 | case DW_OP_nop: | |
3510 | return "DW_OP_nop"; | |
3511 | default: | |
3512 | return "OP_<unknown>"; | |
a3f97cbb JW |
3513 | } |
3514 | } | |
3515 | ||
3f76745e | 3516 | /* Convert a DWARF type code into its string name. */ |
71dfc51f | 3517 | |
487a6e06 | 3518 | #if 0 |
3f76745e JM |
3519 | static char * |
3520 | dwarf_type_encoding_name (enc) | |
3521 | register unsigned enc; | |
a3f97cbb | 3522 | { |
3f76745e | 3523 | switch (enc) |
a3f97cbb | 3524 | { |
3f76745e JM |
3525 | case DW_ATE_address: |
3526 | return "DW_ATE_address"; | |
3527 | case DW_ATE_boolean: | |
3528 | return "DW_ATE_boolean"; | |
3529 | case DW_ATE_complex_float: | |
3530 | return "DW_ATE_complex_float"; | |
3531 | case DW_ATE_float: | |
3532 | return "DW_ATE_float"; | |
3533 | case DW_ATE_signed: | |
3534 | return "DW_ATE_signed"; | |
3535 | case DW_ATE_signed_char: | |
3536 | return "DW_ATE_signed_char"; | |
3537 | case DW_ATE_unsigned: | |
3538 | return "DW_ATE_unsigned"; | |
3539 | case DW_ATE_unsigned_char: | |
3540 | return "DW_ATE_unsigned_char"; | |
3541 | default: | |
3542 | return "DW_ATE_<unknown>"; | |
3543 | } | |
a3f97cbb | 3544 | } |
487a6e06 | 3545 | #endif |
3f76745e JM |
3546 | \f |
3547 | /* Determine the "ultimate origin" of a decl. The decl may be an inlined | |
3548 | instance of an inlined instance of a decl which is local to an inline | |
3549 | function, so we have to trace all of the way back through the origin chain | |
3550 | to find out what sort of node actually served as the original seed for the | |
3551 | given block. */ | |
a3f97cbb | 3552 | |
3f76745e JM |
3553 | static tree |
3554 | decl_ultimate_origin (decl) | |
3555 | register tree decl; | |
a3f97cbb | 3556 | { |
02e24c7a MM |
3557 | #ifdef ENABLE_CHECKING |
3558 | if (DECL_FROM_INLINE (DECL_ORIGIN (decl))) | |
3559 | /* Since the DECL_ABSTRACT_ORIGIN for a DECL is supposed to be the | |
3560 | most distant ancestor, this should never happen. */ | |
3561 | abort (); | |
3562 | #endif | |
3f76745e | 3563 | |
02e24c7a | 3564 | return DECL_ABSTRACT_ORIGIN (decl); |
a3f97cbb JW |
3565 | } |
3566 | ||
3f76745e JM |
3567 | /* Determine the "ultimate origin" of a block. The block may be an inlined |
3568 | instance of an inlined instance of a block which is local to an inline | |
3569 | function, so we have to trace all of the way back through the origin chain | |
3570 | to find out what sort of node actually served as the original seed for the | |
3571 | given block. */ | |
71dfc51f | 3572 | |
3f76745e JM |
3573 | static tree |
3574 | block_ultimate_origin (block) | |
3575 | register tree block; | |
a3f97cbb | 3576 | { |
3f76745e | 3577 | register tree immediate_origin = BLOCK_ABSTRACT_ORIGIN (block); |
71dfc51f | 3578 | |
3f76745e JM |
3579 | if (immediate_origin == NULL_TREE) |
3580 | return NULL_TREE; | |
3581 | else | |
3582 | { | |
3583 | register tree ret_val; | |
3584 | register tree lookahead = immediate_origin; | |
71dfc51f | 3585 | |
3f76745e JM |
3586 | do |
3587 | { | |
3588 | ret_val = lookahead; | |
3589 | lookahead = (TREE_CODE (ret_val) == BLOCK) | |
3590 | ? BLOCK_ABSTRACT_ORIGIN (ret_val) | |
3591 | : NULL; | |
3592 | } | |
3593 | while (lookahead != NULL && lookahead != ret_val); | |
3594 | ||
3595 | return ret_val; | |
3596 | } | |
a3f97cbb JW |
3597 | } |
3598 | ||
3f76745e JM |
3599 | /* Get the class to which DECL belongs, if any. In g++, the DECL_CONTEXT |
3600 | of a virtual function may refer to a base class, so we check the 'this' | |
3601 | parameter. */ | |
71dfc51f | 3602 | |
3f76745e JM |
3603 | static tree |
3604 | decl_class_context (decl) | |
3605 | tree decl; | |
a3f97cbb | 3606 | { |
3f76745e | 3607 | tree context = NULL_TREE; |
71dfc51f | 3608 | |
3f76745e JM |
3609 | if (TREE_CODE (decl) != FUNCTION_DECL || ! DECL_VINDEX (decl)) |
3610 | context = DECL_CONTEXT (decl); | |
3611 | else | |
3612 | context = TYPE_MAIN_VARIANT | |
3613 | (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))))); | |
71dfc51f | 3614 | |
3f76745e JM |
3615 | if (context && TREE_CODE_CLASS (TREE_CODE (context)) != 't') |
3616 | context = NULL_TREE; | |
3617 | ||
3618 | return context; | |
a3f97cbb JW |
3619 | } |
3620 | \f | |
3f76745e | 3621 | /* Add an attribute/value pair to a DIE */ |
71dfc51f RK |
3622 | |
3623 | static inline void | |
3f76745e JM |
3624 | add_dwarf_attr (die, attr) |
3625 | register dw_die_ref die; | |
3626 | register dw_attr_ref attr; | |
a3f97cbb | 3627 | { |
3f76745e | 3628 | if (die != NULL && attr != NULL) |
a3f97cbb | 3629 | { |
3f76745e | 3630 | if (die->die_attr == NULL) |
a3f97cbb | 3631 | { |
3f76745e JM |
3632 | die->die_attr = attr; |
3633 | die->die_attr_last = attr; | |
3634 | } | |
3635 | else | |
3636 | { | |
3637 | die->die_attr_last->dw_attr_next = attr; | |
3638 | die->die_attr_last = attr; | |
a3f97cbb | 3639 | } |
a3f97cbb JW |
3640 | } |
3641 | } | |
3642 | ||
3f76745e | 3643 | /* Add a flag value attribute to a DIE. */ |
71dfc51f | 3644 | |
3f76745e JM |
3645 | static inline void |
3646 | add_AT_flag (die, attr_kind, flag) | |
3647 | register dw_die_ref die; | |
3648 | register enum dwarf_attribute attr_kind; | |
3649 | register unsigned flag; | |
a3f97cbb | 3650 | { |
3f76745e | 3651 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3652 | |
3f76745e JM |
3653 | attr->dw_attr_next = NULL; |
3654 | attr->dw_attr = attr_kind; | |
3655 | attr->dw_attr_val.val_class = dw_val_class_flag; | |
3656 | attr->dw_attr_val.v.val_flag = flag; | |
3657 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3658 | } |
3659 | ||
3f76745e | 3660 | /* Add a signed integer attribute value to a DIE. */ |
71dfc51f | 3661 | |
3f76745e JM |
3662 | static inline void |
3663 | add_AT_int (die, attr_kind, int_val) | |
3664 | register dw_die_ref die; | |
3665 | register enum dwarf_attribute attr_kind; | |
3666 | register long int int_val; | |
a3f97cbb | 3667 | { |
3f76745e JM |
3668 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3669 | ||
3670 | attr->dw_attr_next = NULL; | |
3671 | attr->dw_attr = attr_kind; | |
3672 | attr->dw_attr_val.val_class = dw_val_class_const; | |
3673 | attr->dw_attr_val.v.val_int = int_val; | |
3674 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3675 | } |
3676 | ||
3f76745e | 3677 | /* Add an unsigned integer attribute value to a DIE. */ |
71dfc51f | 3678 | |
3f76745e JM |
3679 | static inline void |
3680 | add_AT_unsigned (die, attr_kind, unsigned_val) | |
3681 | register dw_die_ref die; | |
3682 | register enum dwarf_attribute attr_kind; | |
3683 | register unsigned long unsigned_val; | |
a3f97cbb | 3684 | { |
3f76745e JM |
3685 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
3686 | ||
3687 | attr->dw_attr_next = NULL; | |
3688 | attr->dw_attr = attr_kind; | |
3689 | attr->dw_attr_val.val_class = dw_val_class_unsigned_const; | |
3690 | attr->dw_attr_val.v.val_unsigned = unsigned_val; | |
3691 | add_dwarf_attr (die, attr); | |
a3f97cbb | 3692 | } |
71dfc51f | 3693 | |
3f76745e JM |
3694 | /* Add an unsigned double integer attribute value to a DIE. */ |
3695 | ||
3696 | static inline void | |
3697 | add_AT_long_long (die, attr_kind, val_hi, val_low) | |
a3f97cbb | 3698 | register dw_die_ref die; |
3f76745e JM |
3699 | register enum dwarf_attribute attr_kind; |
3700 | register unsigned long val_hi; | |
3701 | register unsigned long val_low; | |
a3f97cbb | 3702 | { |
3f76745e | 3703 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3704 | |
3f76745e JM |
3705 | attr->dw_attr_next = NULL; |
3706 | attr->dw_attr = attr_kind; | |
3707 | attr->dw_attr_val.val_class = dw_val_class_long_long; | |
3708 | attr->dw_attr_val.v.val_long_long.hi = val_hi; | |
3709 | attr->dw_attr_val.v.val_long_long.low = val_low; | |
3710 | add_dwarf_attr (die, attr); | |
3711 | } | |
71dfc51f | 3712 | |
3f76745e | 3713 | /* Add a floating point attribute value to a DIE and return it. */ |
71dfc51f | 3714 | |
3f76745e JM |
3715 | static inline void |
3716 | add_AT_float (die, attr_kind, length, array) | |
3717 | register dw_die_ref die; | |
3718 | register enum dwarf_attribute attr_kind; | |
3719 | register unsigned length; | |
3720 | register long *array; | |
3721 | { | |
3722 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
3723 | ||
3724 | attr->dw_attr_next = NULL; | |
3725 | attr->dw_attr = attr_kind; | |
3726 | attr->dw_attr_val.val_class = dw_val_class_float; | |
3727 | attr->dw_attr_val.v.val_float.length = length; | |
3728 | attr->dw_attr_val.v.val_float.array = array; | |
3729 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3730 | } |
3731 | ||
3f76745e | 3732 | /* Add a string attribute value to a DIE. */ |
71dfc51f | 3733 | |
3f76745e JM |
3734 | static inline void |
3735 | add_AT_string (die, attr_kind, str) | |
a3f97cbb | 3736 | register dw_die_ref die; |
3f76745e JM |
3737 | register enum dwarf_attribute attr_kind; |
3738 | register char *str; | |
a3f97cbb | 3739 | { |
3f76745e | 3740 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3741 | |
3f76745e JM |
3742 | attr->dw_attr_next = NULL; |
3743 | attr->dw_attr = attr_kind; | |
3744 | attr->dw_attr_val.val_class = dw_val_class_str; | |
3745 | attr->dw_attr_val.v.val_str = xstrdup (str); | |
3746 | add_dwarf_attr (die, attr); | |
3747 | } | |
71dfc51f | 3748 | |
3f76745e | 3749 | /* Add a DIE reference attribute value to a DIE. */ |
71dfc51f | 3750 | |
3f76745e JM |
3751 | static inline void |
3752 | add_AT_die_ref (die, attr_kind, targ_die) | |
3753 | register dw_die_ref die; | |
3754 | register enum dwarf_attribute attr_kind; | |
3755 | register dw_die_ref targ_die; | |
3756 | { | |
3757 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3758 | |
3f76745e JM |
3759 | attr->dw_attr_next = NULL; |
3760 | attr->dw_attr = attr_kind; | |
3761 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
3762 | attr->dw_attr_val.v.val_die_ref = targ_die; | |
3763 | add_dwarf_attr (die, attr); | |
3764 | } | |
b1ccbc24 | 3765 | |
3f76745e | 3766 | /* Add an FDE reference attribute value to a DIE. */ |
b1ccbc24 | 3767 | |
3f76745e JM |
3768 | static inline void |
3769 | add_AT_fde_ref (die, attr_kind, targ_fde) | |
3770 | register dw_die_ref die; | |
3771 | register enum dwarf_attribute attr_kind; | |
3772 | register unsigned targ_fde; | |
3773 | { | |
3774 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
b1ccbc24 | 3775 | |
3f76745e JM |
3776 | attr->dw_attr_next = NULL; |
3777 | attr->dw_attr = attr_kind; | |
3778 | attr->dw_attr_val.val_class = dw_val_class_fde_ref; | |
3779 | attr->dw_attr_val.v.val_fde_index = targ_fde; | |
3780 | add_dwarf_attr (die, attr); | |
a3f97cbb | 3781 | } |
71dfc51f | 3782 | |
3f76745e | 3783 | /* Add a location description attribute value to a DIE. */ |
71dfc51f | 3784 | |
3f76745e JM |
3785 | static inline void |
3786 | add_AT_loc (die, attr_kind, loc) | |
3787 | register dw_die_ref die; | |
3788 | register enum dwarf_attribute attr_kind; | |
3789 | register dw_loc_descr_ref loc; | |
3790 | { | |
3791 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3792 | |
3f76745e JM |
3793 | attr->dw_attr_next = NULL; |
3794 | attr->dw_attr = attr_kind; | |
3795 | attr->dw_attr_val.val_class = dw_val_class_loc; | |
3796 | attr->dw_attr_val.v.val_loc = loc; | |
3797 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3798 | } |
3799 | ||
3f76745e | 3800 | /* Add an address constant attribute value to a DIE. */ |
71dfc51f | 3801 | |
3f76745e JM |
3802 | static inline void |
3803 | add_AT_addr (die, attr_kind, addr) | |
3804 | register dw_die_ref die; | |
3805 | register enum dwarf_attribute attr_kind; | |
3806 | char *addr; | |
a3f97cbb | 3807 | { |
3f76745e | 3808 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3809 | |
3f76745e JM |
3810 | attr->dw_attr_next = NULL; |
3811 | attr->dw_attr = attr_kind; | |
3812 | attr->dw_attr_val.val_class = dw_val_class_addr; | |
3813 | attr->dw_attr_val.v.val_addr = addr; | |
3814 | add_dwarf_attr (die, attr); | |
a3f97cbb JW |
3815 | } |
3816 | ||
3f76745e | 3817 | /* Add a label identifier attribute value to a DIE. */ |
71dfc51f | 3818 | |
3f76745e JM |
3819 | static inline void |
3820 | add_AT_lbl_id (die, attr_kind, lbl_id) | |
3821 | register dw_die_ref die; | |
3822 | register enum dwarf_attribute attr_kind; | |
3823 | register char *lbl_id; | |
a3f97cbb | 3824 | { |
3f76745e | 3825 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); |
71dfc51f | 3826 | |
3f76745e JM |
3827 | attr->dw_attr_next = NULL; |
3828 | attr->dw_attr = attr_kind; | |
3829 | attr->dw_attr_val.val_class = dw_val_class_lbl_id; | |
3830 | attr->dw_attr_val.v.val_lbl_id = xstrdup (lbl_id); | |
3831 | add_dwarf_attr (die, attr); | |
3832 | } | |
71dfc51f | 3833 | |
3f76745e JM |
3834 | /* Add a section offset attribute value to a DIE. */ |
3835 | ||
3836 | static inline void | |
1553e85a | 3837 | add_AT_section_offset (die, attr_kind, section) |
3f76745e JM |
3838 | register dw_die_ref die; |
3839 | register enum dwarf_attribute attr_kind; | |
1553e85a | 3840 | register char *section; |
3f76745e JM |
3841 | { |
3842 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
71dfc51f | 3843 | |
3f76745e JM |
3844 | attr->dw_attr_next = NULL; |
3845 | attr->dw_attr = attr_kind; | |
3846 | attr->dw_attr_val.val_class = dw_val_class_section_offset; | |
1553e85a | 3847 | attr->dw_attr_val.v.val_section = section; |
3f76745e JM |
3848 | add_dwarf_attr (die, attr); |
3849 | ||
a3f97cbb JW |
3850 | } |
3851 | ||
3f76745e | 3852 | /* Test if die refers to an external subroutine. */ |
71dfc51f | 3853 | |
3f76745e JM |
3854 | static inline int |
3855 | is_extern_subr_die (die) | |
3856 | register dw_die_ref die; | |
a3f97cbb | 3857 | { |
3f76745e JM |
3858 | register dw_attr_ref a; |
3859 | register int is_subr = FALSE; | |
3860 | register int is_extern = FALSE; | |
71dfc51f | 3861 | |
3f76745e | 3862 | if (die != NULL && die->die_tag == DW_TAG_subprogram) |
a3f97cbb | 3863 | { |
3f76745e JM |
3864 | is_subr = TRUE; |
3865 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
3866 | { | |
3867 | if (a->dw_attr == DW_AT_external | |
3868 | && a->dw_attr_val.val_class == dw_val_class_flag | |
3869 | && a->dw_attr_val.v.val_flag != 0) | |
3870 | { | |
3871 | is_extern = TRUE; | |
3872 | break; | |
3873 | } | |
3874 | } | |
a3f97cbb | 3875 | } |
71dfc51f | 3876 | |
3f76745e | 3877 | return is_subr && is_extern; |
a3f97cbb JW |
3878 | } |
3879 | ||
3f76745e | 3880 | /* Get the attribute of type attr_kind. */ |
71dfc51f | 3881 | |
3f76745e JM |
3882 | static inline dw_attr_ref |
3883 | get_AT (die, attr_kind) | |
3884 | register dw_die_ref die; | |
3885 | register enum dwarf_attribute attr_kind; | |
f37230f0 | 3886 | { |
3f76745e JM |
3887 | register dw_attr_ref a; |
3888 | register dw_die_ref spec = NULL; | |
3889 | ||
3890 | if (die != NULL) | |
3891 | { | |
3892 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
3893 | { | |
3894 | if (a->dw_attr == attr_kind) | |
3895 | return a; | |
71dfc51f | 3896 | |
3f76745e JM |
3897 | if (a->dw_attr == DW_AT_specification |
3898 | || a->dw_attr == DW_AT_abstract_origin) | |
3899 | spec = a->dw_attr_val.v.val_die_ref; | |
3900 | } | |
71dfc51f | 3901 | |
3f76745e JM |
3902 | if (spec) |
3903 | return get_AT (spec, attr_kind); | |
3904 | } | |
3905 | ||
3906 | return NULL; | |
f37230f0 JM |
3907 | } |
3908 | ||
3f76745e JM |
3909 | /* Return the "low pc" attribute value, typically associated with |
3910 | a subprogram DIE. Return null if the "low pc" attribute is | |
3911 | either not prsent, or if it cannot be represented as an | |
3912 | assembler label identifier. */ | |
71dfc51f | 3913 | |
3f76745e JM |
3914 | static inline char * |
3915 | get_AT_low_pc (die) | |
3916 | register dw_die_ref die; | |
7e23cb16 | 3917 | { |
3f76745e | 3918 | register dw_attr_ref a = get_AT (die, DW_AT_low_pc); |
7e23cb16 | 3919 | |
3f76745e JM |
3920 | if (a && a->dw_attr_val.val_class == dw_val_class_lbl_id) |
3921 | return a->dw_attr_val.v.val_lbl_id; | |
7e23cb16 | 3922 | |
3f76745e | 3923 | return NULL; |
7e23cb16 JM |
3924 | } |
3925 | ||
3f76745e JM |
3926 | /* Return the "high pc" attribute value, typically associated with |
3927 | a subprogram DIE. Return null if the "high pc" attribute is | |
3928 | either not prsent, or if it cannot be represented as an | |
3929 | assembler label identifier. */ | |
71dfc51f | 3930 | |
3f76745e JM |
3931 | static inline char * |
3932 | get_AT_hi_pc (die) | |
a3f97cbb JW |
3933 | register dw_die_ref die; |
3934 | { | |
3f76745e | 3935 | register dw_attr_ref a = get_AT (die, DW_AT_high_pc); |
71dfc51f | 3936 | |
3f76745e JM |
3937 | if (a && a->dw_attr_val.val_class == dw_val_class_lbl_id) |
3938 | return a->dw_attr_val.v.val_lbl_id; | |
f37230f0 | 3939 | |
3f76745e JM |
3940 | return NULL; |
3941 | } | |
3942 | ||
3943 | /* Return the value of the string attribute designated by ATTR_KIND, or | |
3944 | NULL if it is not present. */ | |
71dfc51f | 3945 | |
3f76745e JM |
3946 | static inline char * |
3947 | get_AT_string (die, attr_kind) | |
3948 | register dw_die_ref die; | |
3949 | register enum dwarf_attribute attr_kind; | |
3950 | { | |
3951 | register dw_attr_ref a = get_AT (die, attr_kind); | |
3952 | ||
3953 | if (a && a->dw_attr_val.val_class == dw_val_class_str) | |
3954 | return a->dw_attr_val.v.val_str; | |
3955 | ||
3956 | return NULL; | |
a3f97cbb JW |
3957 | } |
3958 | ||
3f76745e JM |
3959 | /* Return the value of the flag attribute designated by ATTR_KIND, or -1 |
3960 | if it is not present. */ | |
71dfc51f | 3961 | |
3f76745e JM |
3962 | static inline int |
3963 | get_AT_flag (die, attr_kind) | |
3964 | register dw_die_ref die; | |
3965 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 3966 | { |
3f76745e | 3967 | register dw_attr_ref a = get_AT (die, attr_kind); |
71dfc51f | 3968 | |
3f76745e JM |
3969 | if (a && a->dw_attr_val.val_class == dw_val_class_flag) |
3970 | return a->dw_attr_val.v.val_flag; | |
71dfc51f | 3971 | |
3f76745e | 3972 | return -1; |
a3f97cbb JW |
3973 | } |
3974 | ||
3f76745e JM |
3975 | /* Return the value of the unsigned attribute designated by ATTR_KIND, or 0 |
3976 | if it is not present. */ | |
71dfc51f | 3977 | |
3f76745e JM |
3978 | static inline unsigned |
3979 | get_AT_unsigned (die, attr_kind) | |
3980 | register dw_die_ref die; | |
3981 | register enum dwarf_attribute attr_kind; | |
a3f97cbb | 3982 | { |
3f76745e | 3983 | register dw_attr_ref a = get_AT (die, attr_kind); |
71dfc51f | 3984 | |
3f76745e JM |
3985 | if (a && a->dw_attr_val.val_class == dw_val_class_unsigned_const) |
3986 | return a->dw_attr_val.v.val_unsigned; | |
71dfc51f | 3987 | |
3f76745e JM |
3988 | return 0; |
3989 | } | |
71dfc51f | 3990 | |
3f76745e JM |
3991 | static inline int |
3992 | is_c_family () | |
3993 | { | |
3994 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 3995 | |
3f76745e JM |
3996 | return (lang == DW_LANG_C || lang == DW_LANG_C89 |
3997 | || lang == DW_LANG_C_plus_plus); | |
3998 | } | |
71dfc51f | 3999 | |
3f76745e JM |
4000 | static inline int |
4001 | is_fortran () | |
4002 | { | |
4003 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
71dfc51f | 4004 | |
3f76745e JM |
4005 | return (lang == DW_LANG_Fortran77 || lang == DW_LANG_Fortran90); |
4006 | } | |
71dfc51f | 4007 | |
3f76745e | 4008 | /* Remove the specified attribute if present. */ |
71dfc51f | 4009 | |
3f76745e JM |
4010 | static inline void |
4011 | remove_AT (die, attr_kind) | |
4012 | register dw_die_ref die; | |
4013 | register enum dwarf_attribute attr_kind; | |
4014 | { | |
4015 | register dw_attr_ref a; | |
4016 | register dw_attr_ref removed = NULL;; | |
a3f97cbb | 4017 | |
3f76745e JM |
4018 | if (die != NULL) |
4019 | { | |
4020 | if (die->die_attr->dw_attr == attr_kind) | |
4021 | { | |
4022 | removed = die->die_attr; | |
4023 | if (die->die_attr_last == die->die_attr) | |
4024 | die->die_attr_last = NULL; | |
71dfc51f | 4025 | |
3f76745e JM |
4026 | die->die_attr = die->die_attr->dw_attr_next; |
4027 | } | |
71dfc51f | 4028 | |
3f76745e JM |
4029 | else |
4030 | for (a = die->die_attr; a->dw_attr_next != NULL; | |
4031 | a = a->dw_attr_next) | |
4032 | if (a->dw_attr_next->dw_attr == attr_kind) | |
4033 | { | |
4034 | removed = a->dw_attr_next; | |
4035 | if (die->die_attr_last == a->dw_attr_next) | |
4036 | die->die_attr_last = a; | |
71dfc51f | 4037 | |
3f76745e JM |
4038 | a->dw_attr_next = a->dw_attr_next->dw_attr_next; |
4039 | break; | |
4040 | } | |
71dfc51f | 4041 | |
3f76745e JM |
4042 | if (removed != 0) |
4043 | free (removed); | |
4044 | } | |
4045 | } | |
71dfc51f | 4046 | |
3f76745e | 4047 | /* Discard the children of this DIE. */ |
71dfc51f | 4048 | |
3f76745e JM |
4049 | static inline void |
4050 | remove_children (die) | |
4051 | register dw_die_ref die; | |
4052 | { | |
4053 | register dw_die_ref child_die = die->die_child; | |
4054 | ||
4055 | die->die_child = NULL; | |
4056 | die->die_child_last = NULL; | |
4057 | ||
4058 | while (child_die != NULL) | |
a3f97cbb | 4059 | { |
3f76745e JM |
4060 | register dw_die_ref tmp_die = child_die; |
4061 | register dw_attr_ref a; | |
71dfc51f | 4062 | |
3f76745e JM |
4063 | child_die = child_die->die_sib; |
4064 | ||
4065 | for (a = tmp_die->die_attr; a != NULL; ) | |
a3f97cbb | 4066 | { |
3f76745e | 4067 | register dw_attr_ref tmp_a = a; |
71dfc51f | 4068 | |
3f76745e JM |
4069 | a = a->dw_attr_next; |
4070 | free (tmp_a); | |
a3f97cbb | 4071 | } |
71dfc51f | 4072 | |
3f76745e JM |
4073 | free (tmp_die); |
4074 | } | |
4075 | } | |
71dfc51f | 4076 | |
3f76745e | 4077 | /* Add a child DIE below its parent. */ |
71dfc51f | 4078 | |
3f76745e JM |
4079 | static inline void |
4080 | add_child_die (die, child_die) | |
4081 | register dw_die_ref die; | |
4082 | register dw_die_ref child_die; | |
4083 | { | |
4084 | if (die != NULL && child_die != NULL) | |
e90b62db | 4085 | { |
3a88cbd1 JL |
4086 | if (die == child_die) |
4087 | abort (); | |
3f76745e JM |
4088 | child_die->die_parent = die; |
4089 | child_die->die_sib = NULL; | |
4090 | ||
4091 | if (die->die_child == NULL) | |
e90b62db | 4092 | { |
3f76745e JM |
4093 | die->die_child = child_die; |
4094 | die->die_child_last = child_die; | |
e90b62db JM |
4095 | } |
4096 | else | |
e90b62db | 4097 | { |
3f76745e JM |
4098 | die->die_child_last->die_sib = child_die; |
4099 | die->die_child_last = child_die; | |
e90b62db | 4100 | } |
3f76745e JM |
4101 | } |
4102 | } | |
4103 | ||
4104 | /* Return a pointer to a newly created DIE node. */ | |
4105 | ||
4106 | static inline dw_die_ref | |
4107 | new_die (tag_value, parent_die) | |
4108 | register enum dwarf_tag tag_value; | |
4109 | register dw_die_ref parent_die; | |
4110 | { | |
4111 | register dw_die_ref die = (dw_die_ref) xmalloc (sizeof (die_node)); | |
4112 | ||
4113 | die->die_tag = tag_value; | |
4114 | die->die_abbrev = 0; | |
4115 | die->die_offset = 0; | |
4116 | die->die_child = NULL; | |
4117 | die->die_parent = NULL; | |
4118 | die->die_sib = NULL; | |
4119 | die->die_child_last = NULL; | |
4120 | die->die_attr = NULL; | |
4121 | die->die_attr_last = NULL; | |
4122 | ||
4123 | if (parent_die != NULL) | |
4124 | add_child_die (parent_die, die); | |
4125 | else | |
ef76d03b JW |
4126 | { |
4127 | limbo_die_node *limbo_node; | |
4128 | ||
4129 | limbo_node = (limbo_die_node *) xmalloc (sizeof (limbo_die_node)); | |
4130 | limbo_node->die = die; | |
4131 | limbo_node->next = limbo_die_list; | |
4132 | limbo_die_list = limbo_node; | |
4133 | } | |
71dfc51f | 4134 | |
3f76745e JM |
4135 | return die; |
4136 | } | |
71dfc51f | 4137 | |
3f76745e | 4138 | /* Return the DIE associated with the given type specifier. */ |
71dfc51f | 4139 | |
3f76745e JM |
4140 | static inline dw_die_ref |
4141 | lookup_type_die (type) | |
4142 | register tree type; | |
4143 | { | |
4144 | return (dw_die_ref) TYPE_SYMTAB_POINTER (type); | |
4145 | } | |
e90b62db | 4146 | |
3f76745e | 4147 | /* Equate a DIE to a given type specifier. */ |
71dfc51f | 4148 | |
3f76745e JM |
4149 | static void |
4150 | equate_type_number_to_die (type, type_die) | |
4151 | register tree type; | |
4152 | register dw_die_ref type_die; | |
4153 | { | |
4154 | TYPE_SYMTAB_POINTER (type) = (char *) type_die; | |
4155 | } | |
71dfc51f | 4156 | |
3f76745e | 4157 | /* Return the DIE associated with a given declaration. */ |
71dfc51f | 4158 | |
3f76745e JM |
4159 | static inline dw_die_ref |
4160 | lookup_decl_die (decl) | |
4161 | register tree decl; | |
4162 | { | |
4163 | register unsigned decl_id = DECL_UID (decl); | |
4164 | ||
4165 | return (decl_id < decl_die_table_in_use | |
4166 | ? decl_die_table[decl_id] : NULL); | |
a3f97cbb JW |
4167 | } |
4168 | ||
3f76745e | 4169 | /* Equate a DIE to a particular declaration. */ |
71dfc51f | 4170 | |
3f76745e JM |
4171 | static void |
4172 | equate_decl_number_to_die (decl, decl_die) | |
4173 | register tree decl; | |
4174 | register dw_die_ref decl_die; | |
a3f97cbb | 4175 | { |
3f76745e | 4176 | register unsigned decl_id = DECL_UID (decl); |
3f76745e | 4177 | register unsigned num_allocated; |
d291dd49 | 4178 | |
3f76745e | 4179 | if (decl_id >= decl_die_table_allocated) |
a3f97cbb | 4180 | { |
3f76745e JM |
4181 | num_allocated |
4182 | = ((decl_id + 1 + DECL_DIE_TABLE_INCREMENT - 1) | |
4183 | / DECL_DIE_TABLE_INCREMENT) | |
4184 | * DECL_DIE_TABLE_INCREMENT; | |
4185 | ||
4186 | decl_die_table | |
4187 | = (dw_die_ref *) xrealloc (decl_die_table, | |
4188 | sizeof (dw_die_ref) * num_allocated); | |
4189 | ||
4190 | bzero ((char *) &decl_die_table[decl_die_table_allocated], | |
4191 | (num_allocated - decl_die_table_allocated) * sizeof (dw_die_ref)); | |
4192 | decl_die_table_allocated = num_allocated; | |
a3f97cbb | 4193 | } |
71dfc51f | 4194 | |
3f76745e JM |
4195 | if (decl_id >= decl_die_table_in_use) |
4196 | decl_die_table_in_use = (decl_id + 1); | |
4197 | ||
4198 | decl_die_table[decl_id] = decl_die; | |
a3f97cbb JW |
4199 | } |
4200 | ||
3f76745e JM |
4201 | /* Return a pointer to a newly allocated location description. Location |
4202 | descriptions are simple expression terms that can be strung | |
4203 | together to form more complicated location (address) descriptions. */ | |
71dfc51f | 4204 | |
3f76745e JM |
4205 | static inline dw_loc_descr_ref |
4206 | new_loc_descr (op, oprnd1, oprnd2) | |
4207 | register enum dwarf_location_atom op; | |
4208 | register unsigned long oprnd1; | |
4209 | register unsigned long oprnd2; | |
a3f97cbb | 4210 | { |
3f76745e JM |
4211 | register dw_loc_descr_ref descr |
4212 | = (dw_loc_descr_ref) xmalloc (sizeof (dw_loc_descr_node)); | |
71dfc51f | 4213 | |
3f76745e JM |
4214 | descr->dw_loc_next = NULL; |
4215 | descr->dw_loc_opc = op; | |
4216 | descr->dw_loc_oprnd1.val_class = dw_val_class_unsigned_const; | |
4217 | descr->dw_loc_oprnd1.v.val_unsigned = oprnd1; | |
4218 | descr->dw_loc_oprnd2.val_class = dw_val_class_unsigned_const; | |
4219 | descr->dw_loc_oprnd2.v.val_unsigned = oprnd2; | |
71dfc51f | 4220 | |
3f76745e | 4221 | return descr; |
a3f97cbb | 4222 | } |
71dfc51f | 4223 | |
3f76745e JM |
4224 | /* Add a location description term to a location description expression. */ |
4225 | ||
4226 | static inline void | |
4227 | add_loc_descr (list_head, descr) | |
4228 | register dw_loc_descr_ref *list_head; | |
4229 | register dw_loc_descr_ref descr; | |
a3f97cbb | 4230 | { |
3f76745e | 4231 | register dw_loc_descr_ref *d; |
71dfc51f | 4232 | |
3f76745e JM |
4233 | /* Find the end of the chain. */ |
4234 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) | |
4235 | ; | |
71dfc51f | 4236 | |
3f76745e JM |
4237 | *d = descr; |
4238 | } | |
4239 | \f | |
4240 | /* Keep track of the number of spaces used to indent the | |
4241 | output of the debugging routines that print the structure of | |
4242 | the DIE internal representation. */ | |
4243 | static int print_indent; | |
71dfc51f | 4244 | |
3f76745e JM |
4245 | /* Indent the line the number of spaces given by print_indent. */ |
4246 | ||
4247 | static inline void | |
4248 | print_spaces (outfile) | |
4249 | FILE *outfile; | |
4250 | { | |
4251 | fprintf (outfile, "%*s", print_indent, ""); | |
a3f97cbb JW |
4252 | } |
4253 | ||
956d6950 | 4254 | /* Print the information associated with a given DIE, and its children. |
3f76745e | 4255 | This routine is a debugging aid only. */ |
71dfc51f | 4256 | |
a3f97cbb | 4257 | static void |
3f76745e JM |
4258 | print_die (die, outfile) |
4259 | dw_die_ref die; | |
4260 | FILE *outfile; | |
a3f97cbb | 4261 | { |
3f76745e JM |
4262 | register dw_attr_ref a; |
4263 | register dw_die_ref c; | |
71dfc51f | 4264 | |
3f76745e | 4265 | print_spaces (outfile); |
2d8b0f3a | 4266 | fprintf (outfile, "DIE %4lu: %s\n", |
3f76745e JM |
4267 | die->die_offset, dwarf_tag_name (die->die_tag)); |
4268 | print_spaces (outfile); | |
2d8b0f3a JL |
4269 | fprintf (outfile, " abbrev id: %lu", die->die_abbrev); |
4270 | fprintf (outfile, " offset: %lu\n", die->die_offset); | |
3f76745e JM |
4271 | |
4272 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
a3f97cbb | 4273 | { |
3f76745e JM |
4274 | print_spaces (outfile); |
4275 | fprintf (outfile, " %s: ", dwarf_attr_name (a->dw_attr)); | |
4276 | ||
4277 | switch (a->dw_attr_val.val_class) | |
4278 | { | |
4279 | case dw_val_class_addr: | |
4280 | fprintf (outfile, "address"); | |
4281 | break; | |
4282 | case dw_val_class_loc: | |
4283 | fprintf (outfile, "location descriptor"); | |
4284 | break; | |
4285 | case dw_val_class_const: | |
2d8b0f3a | 4286 | fprintf (outfile, "%ld", a->dw_attr_val.v.val_int); |
3f76745e JM |
4287 | break; |
4288 | case dw_val_class_unsigned_const: | |
2d8b0f3a | 4289 | fprintf (outfile, "%lu", a->dw_attr_val.v.val_unsigned); |
3f76745e JM |
4290 | break; |
4291 | case dw_val_class_long_long: | |
2d8b0f3a | 4292 | fprintf (outfile, "constant (%lu,%lu)", |
3f76745e JM |
4293 | a->dw_attr_val.v.val_long_long.hi, |
4294 | a->dw_attr_val.v.val_long_long.low); | |
4295 | break; | |
4296 | case dw_val_class_float: | |
4297 | fprintf (outfile, "floating-point constant"); | |
4298 | break; | |
4299 | case dw_val_class_flag: | |
4300 | fprintf (outfile, "%u", a->dw_attr_val.v.val_flag); | |
4301 | break; | |
4302 | case dw_val_class_die_ref: | |
4303 | if (a->dw_attr_val.v.val_die_ref != NULL) | |
2d8b0f3a | 4304 | fprintf (outfile, "die -> %lu", |
3f76745e JM |
4305 | a->dw_attr_val.v.val_die_ref->die_offset); |
4306 | else | |
4307 | fprintf (outfile, "die -> <null>"); | |
4308 | break; | |
4309 | case dw_val_class_lbl_id: | |
4310 | fprintf (outfile, "label: %s", a->dw_attr_val.v.val_lbl_id); | |
4311 | break; | |
4312 | case dw_val_class_section_offset: | |
1553e85a | 4313 | fprintf (outfile, "section: %s", a->dw_attr_val.v.val_section); |
3f76745e JM |
4314 | break; |
4315 | case dw_val_class_str: | |
4316 | if (a->dw_attr_val.v.val_str != NULL) | |
4317 | fprintf (outfile, "\"%s\"", a->dw_attr_val.v.val_str); | |
4318 | else | |
4319 | fprintf (outfile, "<null>"); | |
4320 | break; | |
e9a25f70 JL |
4321 | default: |
4322 | break; | |
3f76745e JM |
4323 | } |
4324 | ||
4325 | fprintf (outfile, "\n"); | |
4326 | } | |
4327 | ||
4328 | if (die->die_child != NULL) | |
4329 | { | |
4330 | print_indent += 4; | |
4331 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4332 | print_die (c, outfile); | |
71dfc51f | 4333 | |
3f76745e | 4334 | print_indent -= 4; |
a3f97cbb | 4335 | } |
a3f97cbb JW |
4336 | } |
4337 | ||
3f76745e JM |
4338 | /* Print the contents of the source code line number correspondence table. |
4339 | This routine is a debugging aid only. */ | |
71dfc51f | 4340 | |
3f76745e JM |
4341 | static void |
4342 | print_dwarf_line_table (outfile) | |
4343 | FILE *outfile; | |
a3f97cbb | 4344 | { |
3f76745e JM |
4345 | register unsigned i; |
4346 | register dw_line_info_ref line_info; | |
4347 | ||
4348 | fprintf (outfile, "\n\nDWARF source line information\n"); | |
4349 | for (i = 1; i < line_info_table_in_use; ++i) | |
a3f97cbb | 4350 | { |
3f76745e JM |
4351 | line_info = &line_info_table[i]; |
4352 | fprintf (outfile, "%5d: ", i); | |
4353 | fprintf (outfile, "%-20s", file_table[line_info->dw_file_num]); | |
2d8b0f3a | 4354 | fprintf (outfile, "%6ld", line_info->dw_line_num); |
3f76745e | 4355 | fprintf (outfile, "\n"); |
a3f97cbb | 4356 | } |
3f76745e JM |
4357 | |
4358 | fprintf (outfile, "\n\n"); | |
f37230f0 JM |
4359 | } |
4360 | ||
3f76745e JM |
4361 | /* Print the information collected for a given DIE. */ |
4362 | ||
4363 | void | |
4364 | debug_dwarf_die (die) | |
4365 | dw_die_ref die; | |
4366 | { | |
4367 | print_die (die, stderr); | |
4368 | } | |
4369 | ||
4370 | /* Print all DWARF information collected for the compilation unit. | |
4371 | This routine is a debugging aid only. */ | |
4372 | ||
4373 | void | |
4374 | debug_dwarf () | |
4375 | { | |
4376 | print_indent = 0; | |
4377 | print_die (comp_unit_die, stderr); | |
4378 | print_dwarf_line_table (stderr); | |
4379 | } | |
4380 | \f | |
4381 | /* Traverse the DIE, and add a sibling attribute if it may have the | |
4382 | effect of speeding up access to siblings. To save some space, | |
4383 | avoid generating sibling attributes for DIE's without children. */ | |
71dfc51f | 4384 | |
f37230f0 | 4385 | static void |
3f76745e JM |
4386 | add_sibling_attributes(die) |
4387 | register dw_die_ref die; | |
f37230f0 | 4388 | { |
3f76745e JM |
4389 | register dw_die_ref c; |
4390 | register dw_attr_ref attr; | |
4391 | if (die != comp_unit_die && die->die_child != NULL) | |
4392 | { | |
4393 | attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
4394 | attr->dw_attr_next = NULL; | |
4395 | attr->dw_attr = DW_AT_sibling; | |
4396 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
4397 | attr->dw_attr_val.v.val_die_ref = die->die_sib; | |
71dfc51f | 4398 | |
3f76745e JM |
4399 | /* Add the sibling link to the front of the attribute list. */ |
4400 | attr->dw_attr_next = die->die_attr; | |
4401 | if (die->die_attr == NULL) | |
4402 | die->die_attr_last = attr; | |
71dfc51f | 4403 | |
3f76745e JM |
4404 | die->die_attr = attr; |
4405 | } | |
4406 | ||
4407 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4408 | add_sibling_attributes (c); | |
a3f97cbb JW |
4409 | } |
4410 | ||
3f76745e JM |
4411 | /* The format of each DIE (and its attribute value pairs) |
4412 | is encoded in an abbreviation table. This routine builds the | |
4413 | abbreviation table and assigns a unique abbreviation id for | |
4414 | each abbreviation entry. The children of each die are visited | |
4415 | recursively. */ | |
71dfc51f | 4416 | |
a3f97cbb | 4417 | static void |
3f76745e JM |
4418 | build_abbrev_table (die) |
4419 | register dw_die_ref die; | |
a3f97cbb | 4420 | { |
3f76745e JM |
4421 | register unsigned long abbrev_id; |
4422 | register unsigned long n_alloc; | |
4423 | register dw_die_ref c; | |
4424 | register dw_attr_ref d_attr, a_attr; | |
a3f97cbb JW |
4425 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) |
4426 | { | |
4427 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 4428 | |
3f76745e JM |
4429 | if (abbrev->die_tag == die->die_tag) |
4430 | { | |
4431 | if ((abbrev->die_child != NULL) == (die->die_child != NULL)) | |
4432 | { | |
4433 | a_attr = abbrev->die_attr; | |
4434 | d_attr = die->die_attr; | |
71dfc51f | 4435 | |
3f76745e JM |
4436 | while (a_attr != NULL && d_attr != NULL) |
4437 | { | |
4438 | if ((a_attr->dw_attr != d_attr->dw_attr) | |
4439 | || (value_format (&a_attr->dw_attr_val) | |
4440 | != value_format (&d_attr->dw_attr_val))) | |
4441 | break; | |
71dfc51f | 4442 | |
3f76745e JM |
4443 | a_attr = a_attr->dw_attr_next; |
4444 | d_attr = d_attr->dw_attr_next; | |
4445 | } | |
71dfc51f | 4446 | |
3f76745e JM |
4447 | if (a_attr == NULL && d_attr == NULL) |
4448 | break; | |
4449 | } | |
4450 | } | |
4451 | } | |
71dfc51f | 4452 | |
3f76745e JM |
4453 | if (abbrev_id >= abbrev_die_table_in_use) |
4454 | { | |
4455 | if (abbrev_die_table_in_use >= abbrev_die_table_allocated) | |
a3f97cbb | 4456 | { |
3f76745e JM |
4457 | n_alloc = abbrev_die_table_allocated + ABBREV_DIE_TABLE_INCREMENT; |
4458 | abbrev_die_table | |
c760091a | 4459 | = (dw_die_ref *) xrealloc (abbrev_die_table, |
966f5dff | 4460 | sizeof (dw_die_ref) * n_alloc); |
71dfc51f | 4461 | |
3f76745e JM |
4462 | bzero ((char *) &abbrev_die_table[abbrev_die_table_allocated], |
4463 | (n_alloc - abbrev_die_table_allocated) * sizeof (dw_die_ref)); | |
4464 | abbrev_die_table_allocated = n_alloc; | |
a3f97cbb | 4465 | } |
71dfc51f | 4466 | |
3f76745e JM |
4467 | ++abbrev_die_table_in_use; |
4468 | abbrev_die_table[abbrev_id] = die; | |
a3f97cbb | 4469 | } |
3f76745e JM |
4470 | |
4471 | die->die_abbrev = abbrev_id; | |
4472 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
4473 | build_abbrev_table (c); | |
a3f97cbb | 4474 | } |
3f76745e | 4475 | \f |
243e7835 JW |
4476 | /* Return the size of a string, including the null byte. |
4477 | ||
4478 | This used to treat backslashes as escapes, and hence they were not included | |
4479 | in the count. However, that conflicts with what ASM_OUTPUT_ASCII does, | |
4480 | which treats a backslash as a backslash, escaping it if necessary, and hence | |
4481 | we must include them in the count. */ | |
a3f97cbb | 4482 | |
3f76745e JM |
4483 | static unsigned long |
4484 | size_of_string (str) | |
4485 | register char *str; | |
4486 | { | |
243e7835 | 4487 | return strlen (str) + 1; |
3f76745e JM |
4488 | } |
4489 | ||
4490 | /* Return the size of a location descriptor. */ | |
4491 | ||
4492 | static unsigned long | |
4493 | size_of_loc_descr (loc) | |
a3f97cbb JW |
4494 | register dw_loc_descr_ref loc; |
4495 | { | |
3f76745e | 4496 | register unsigned long size = 1; |
71dfc51f | 4497 | |
a3f97cbb JW |
4498 | switch (loc->dw_loc_opc) |
4499 | { | |
4500 | case DW_OP_addr: | |
3f76745e | 4501 | size += PTR_SIZE; |
a3f97cbb JW |
4502 | break; |
4503 | case DW_OP_const1u: | |
4504 | case DW_OP_const1s: | |
3f76745e | 4505 | size += 1; |
a3f97cbb JW |
4506 | break; |
4507 | case DW_OP_const2u: | |
4508 | case DW_OP_const2s: | |
3f76745e | 4509 | size += 2; |
a3f97cbb JW |
4510 | break; |
4511 | case DW_OP_const4u: | |
4512 | case DW_OP_const4s: | |
3f76745e | 4513 | size += 4; |
a3f97cbb JW |
4514 | break; |
4515 | case DW_OP_const8u: | |
4516 | case DW_OP_const8s: | |
3f76745e | 4517 | size += 8; |
a3f97cbb JW |
4518 | break; |
4519 | case DW_OP_constu: | |
3f76745e | 4520 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4521 | break; |
4522 | case DW_OP_consts: | |
3f76745e | 4523 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4524 | break; |
4525 | case DW_OP_pick: | |
3f76745e | 4526 | size += 1; |
a3f97cbb JW |
4527 | break; |
4528 | case DW_OP_plus_uconst: | |
3f76745e | 4529 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4530 | break; |
4531 | case DW_OP_skip: | |
4532 | case DW_OP_bra: | |
3f76745e | 4533 | size += 2; |
a3f97cbb JW |
4534 | break; |
4535 | case DW_OP_breg0: | |
4536 | case DW_OP_breg1: | |
4537 | case DW_OP_breg2: | |
4538 | case DW_OP_breg3: | |
4539 | case DW_OP_breg4: | |
4540 | case DW_OP_breg5: | |
4541 | case DW_OP_breg6: | |
4542 | case DW_OP_breg7: | |
4543 | case DW_OP_breg8: | |
4544 | case DW_OP_breg9: | |
4545 | case DW_OP_breg10: | |
4546 | case DW_OP_breg11: | |
4547 | case DW_OP_breg12: | |
4548 | case DW_OP_breg13: | |
4549 | case DW_OP_breg14: | |
4550 | case DW_OP_breg15: | |
4551 | case DW_OP_breg16: | |
4552 | case DW_OP_breg17: | |
4553 | case DW_OP_breg18: | |
4554 | case DW_OP_breg19: | |
4555 | case DW_OP_breg20: | |
4556 | case DW_OP_breg21: | |
4557 | case DW_OP_breg22: | |
4558 | case DW_OP_breg23: | |
4559 | case DW_OP_breg24: | |
4560 | case DW_OP_breg25: | |
4561 | case DW_OP_breg26: | |
4562 | case DW_OP_breg27: | |
4563 | case DW_OP_breg28: | |
4564 | case DW_OP_breg29: | |
4565 | case DW_OP_breg30: | |
4566 | case DW_OP_breg31: | |
3f76745e | 4567 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4568 | break; |
4569 | case DW_OP_regx: | |
3f76745e | 4570 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4571 | break; |
4572 | case DW_OP_fbreg: | |
3f76745e | 4573 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); |
a3f97cbb JW |
4574 | break; |
4575 | case DW_OP_bregx: | |
3f76745e JM |
4576 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
4577 | size += size_of_sleb128 (loc->dw_loc_oprnd2.v.val_int); | |
a3f97cbb JW |
4578 | break; |
4579 | case DW_OP_piece: | |
3f76745e | 4580 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); |
a3f97cbb JW |
4581 | break; |
4582 | case DW_OP_deref_size: | |
4583 | case DW_OP_xderef_size: | |
3f76745e | 4584 | size += 1; |
a3f97cbb JW |
4585 | break; |
4586 | default: | |
4587 | break; | |
4588 | } | |
3f76745e JM |
4589 | |
4590 | return size; | |
a3f97cbb JW |
4591 | } |
4592 | ||
3f76745e | 4593 | /* Return the size of a series of location descriptors. */ |
71dfc51f | 4594 | |
a3f97cbb | 4595 | static unsigned long |
3f76745e JM |
4596 | size_of_locs (loc) |
4597 | register dw_loc_descr_ref loc; | |
a3f97cbb | 4598 | { |
3f76745e | 4599 | register unsigned long size = 0; |
71dfc51f | 4600 | |
3f76745e JM |
4601 | for (; loc != NULL; loc = loc->dw_loc_next) |
4602 | size += size_of_loc_descr (loc); | |
4603 | ||
4604 | return size; | |
4605 | } | |
4606 | ||
4607 | /* Return the power-of-two number of bytes necessary to represent VALUE. */ | |
4608 | ||
4609 | static int | |
4610 | constant_size (value) | |
4611 | long unsigned value; | |
4612 | { | |
4613 | int log; | |
4614 | ||
4615 | if (value == 0) | |
4616 | log = 0; | |
a3f97cbb | 4617 | else |
3f76745e | 4618 | log = floor_log2 (value); |
71dfc51f | 4619 | |
3f76745e JM |
4620 | log = log / 8; |
4621 | log = 1 << (floor_log2 (log) + 1); | |
4622 | ||
4623 | return log; | |
a3f97cbb JW |
4624 | } |
4625 | ||
3f76745e JM |
4626 | /* Return the size of a DIE, as it is represented in the |
4627 | .debug_info section. */ | |
71dfc51f | 4628 | |
3f76745e JM |
4629 | static unsigned long |
4630 | size_of_die (die) | |
a3f97cbb JW |
4631 | register dw_die_ref die; |
4632 | { | |
3f76745e | 4633 | register unsigned long size = 0; |
a3f97cbb | 4634 | register dw_attr_ref a; |
71dfc51f | 4635 | |
3f76745e | 4636 | size += size_of_uleb128 (die->die_abbrev); |
a3f97cbb JW |
4637 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
4638 | { | |
4639 | switch (a->dw_attr_val.val_class) | |
4640 | { | |
4641 | case dw_val_class_addr: | |
3f76745e | 4642 | size += PTR_SIZE; |
a3f97cbb JW |
4643 | break; |
4644 | case dw_val_class_loc: | |
3f76745e JM |
4645 | { |
4646 | register unsigned long lsize | |
4647 | = size_of_locs (a->dw_attr_val.v.val_loc); | |
71dfc51f | 4648 | |
3f76745e JM |
4649 | /* Block length. */ |
4650 | size += constant_size (lsize); | |
4651 | size += lsize; | |
4652 | } | |
a3f97cbb JW |
4653 | break; |
4654 | case dw_val_class_const: | |
3f76745e | 4655 | size += 4; |
a3f97cbb JW |
4656 | break; |
4657 | case dw_val_class_unsigned_const: | |
3f76745e | 4658 | size += constant_size (a->dw_attr_val.v.val_unsigned); |
a3f97cbb | 4659 | break; |
469ac993 | 4660 | case dw_val_class_long_long: |
3f76745e | 4661 | size += 1 + 8; /* block */ |
469ac993 JM |
4662 | break; |
4663 | case dw_val_class_float: | |
3f76745e | 4664 | size += 1 + a->dw_attr_val.v.val_float.length * 4; /* block */ |
a3f97cbb JW |
4665 | break; |
4666 | case dw_val_class_flag: | |
3f76745e | 4667 | size += 1; |
a3f97cbb JW |
4668 | break; |
4669 | case dw_val_class_die_ref: | |
3f76745e | 4670 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
4671 | break; |
4672 | case dw_val_class_fde_ref: | |
3f76745e | 4673 | size += DWARF_OFFSET_SIZE; |
a3f97cbb JW |
4674 | break; |
4675 | case dw_val_class_lbl_id: | |
3f76745e JM |
4676 | size += PTR_SIZE; |
4677 | break; | |
4678 | case dw_val_class_section_offset: | |
4679 | size += DWARF_OFFSET_SIZE; | |
4680 | break; | |
4681 | case dw_val_class_str: | |
4682 | size += size_of_string (a->dw_attr_val.v.val_str); | |
4683 | break; | |
4684 | default: | |
4685 | abort (); | |
4686 | } | |
a3f97cbb | 4687 | } |
3f76745e JM |
4688 | |
4689 | return size; | |
a3f97cbb JW |
4690 | } |
4691 | ||
956d6950 | 4692 | /* Size the debugging information associated with a given DIE. |
3f76745e JM |
4693 | Visits the DIE's children recursively. Updates the global |
4694 | variable next_die_offset, on each time through. Uses the | |
956d6950 | 4695 | current value of next_die_offset to update the die_offset |
3f76745e | 4696 | field in each DIE. */ |
71dfc51f | 4697 | |
a3f97cbb | 4698 | static void |
3f76745e JM |
4699 | calc_die_sizes (die) |
4700 | dw_die_ref die; | |
a3f97cbb | 4701 | { |
3f76745e JM |
4702 | register dw_die_ref c; |
4703 | die->die_offset = next_die_offset; | |
4704 | next_die_offset += size_of_die (die); | |
71dfc51f | 4705 | |
3f76745e JM |
4706 | for (c = die->die_child; c != NULL; c = c->die_sib) |
4707 | calc_die_sizes (c); | |
71dfc51f | 4708 | |
3f76745e JM |
4709 | if (die->die_child != NULL) |
4710 | /* Count the null byte used to terminate sibling lists. */ | |
4711 | next_die_offset += 1; | |
a3f97cbb JW |
4712 | } |
4713 | ||
3f76745e JM |
4714 | /* Return the size of the line information prolog generated for the |
4715 | compilation unit. */ | |
469ac993 | 4716 | |
3f76745e JM |
4717 | static unsigned long |
4718 | size_of_line_prolog () | |
a94dbf2c | 4719 | { |
3f76745e JM |
4720 | register unsigned long size; |
4721 | register unsigned long ft_index; | |
a94dbf2c | 4722 | |
3f76745e | 4723 | size = DWARF_LINE_PROLOG_HEADER_SIZE; |
469ac993 | 4724 | |
3f76745e JM |
4725 | /* Count the size of the table giving number of args for each |
4726 | standard opcode. */ | |
4727 | size += DWARF_LINE_OPCODE_BASE - 1; | |
71dfc51f | 4728 | |
3f76745e | 4729 | /* Include directory table is empty (at present). Count only the |
38e01259 | 4730 | null byte used to terminate the table. */ |
3f76745e | 4731 | size += 1; |
71dfc51f | 4732 | |
3f76745e JM |
4733 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
4734 | { | |
4735 | /* File name entry. */ | |
4736 | size += size_of_string (file_table[ft_index]); | |
a94dbf2c | 4737 | |
3f76745e JM |
4738 | /* Include directory index. */ |
4739 | size += size_of_uleb128 (0); | |
a94dbf2c | 4740 | |
3f76745e JM |
4741 | /* Modification time. */ |
4742 | size += size_of_uleb128 (0); | |
71dfc51f | 4743 | |
3f76745e JM |
4744 | /* File length in bytes. */ |
4745 | size += size_of_uleb128 (0); | |
a94dbf2c | 4746 | } |
71dfc51f | 4747 | |
3f76745e JM |
4748 | /* Count the file table terminator. */ |
4749 | size += 1; | |
4750 | return size; | |
a94dbf2c JM |
4751 | } |
4752 | ||
3f76745e JM |
4753 | /* Return the size of the line information generated for this |
4754 | compilation unit. */ | |
71dfc51f | 4755 | |
3f76745e JM |
4756 | static unsigned long |
4757 | size_of_line_info () | |
a94dbf2c | 4758 | { |
3f76745e JM |
4759 | register unsigned long size; |
4760 | register unsigned long lt_index; | |
4761 | register unsigned long current_line; | |
4762 | register long line_offset; | |
4763 | register long line_delta; | |
4764 | register unsigned long current_file; | |
4765 | register unsigned long function; | |
f19a6894 JW |
4766 | unsigned long size_of_set_address; |
4767 | ||
4768 | /* Size of a DW_LNE_set_address instruction. */ | |
4769 | size_of_set_address = 1 + size_of_uleb128 (1 + PTR_SIZE) + 1 + PTR_SIZE; | |
a94dbf2c | 4770 | |
3f76745e JM |
4771 | /* Version number. */ |
4772 | size = 2; | |
71dfc51f | 4773 | |
3f76745e JM |
4774 | /* Prolog length specifier. */ |
4775 | size += DWARF_OFFSET_SIZE; | |
71dfc51f | 4776 | |
3f76745e JM |
4777 | /* Prolog. */ |
4778 | size += size_of_line_prolog (); | |
a94dbf2c | 4779 | |
3f76745e | 4780 | /* Set address register instruction. */ |
f19a6894 | 4781 | size += size_of_set_address; |
71dfc51f | 4782 | |
3f76745e JM |
4783 | current_file = 1; |
4784 | current_line = 1; | |
4785 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) | |
a94dbf2c | 4786 | { |
3f76745e JM |
4787 | register dw_line_info_ref line_info; |
4788 | ||
4789 | /* Advance pc instruction. */ | |
f19a6894 JW |
4790 | /* ??? See the DW_LNS_advance_pc comment in output_line_info. */ |
4791 | if (0) | |
4792 | size += 1 + 2; | |
4793 | else | |
4794 | size += size_of_set_address; | |
4795 | ||
3f76745e JM |
4796 | line_info = &line_info_table[lt_index]; |
4797 | if (line_info->dw_file_num != current_file) | |
4798 | { | |
4799 | /* Set file number instruction. */ | |
4800 | size += 1; | |
4801 | current_file = line_info->dw_file_num; | |
4802 | size += size_of_uleb128 (current_file); | |
4803 | } | |
4804 | ||
4805 | if (line_info->dw_line_num != current_line) | |
4806 | { | |
4807 | line_offset = line_info->dw_line_num - current_line; | |
4808 | line_delta = line_offset - DWARF_LINE_BASE; | |
4809 | current_line = line_info->dw_line_num; | |
4810 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
4811 | /* 1-byte special line number instruction. */ | |
4812 | size += 1; | |
4813 | else | |
4814 | { | |
4815 | /* Advance line instruction. */ | |
4816 | size += 1; | |
4817 | size += size_of_sleb128 (line_offset); | |
4818 | /* Generate line entry instruction. */ | |
4819 | size += 1; | |
4820 | } | |
4821 | } | |
a94dbf2c | 4822 | } |
a94dbf2c | 4823 | |
3f76745e | 4824 | /* Advance pc instruction. */ |
f19a6894 JW |
4825 | if (0) |
4826 | size += 1 + 2; | |
4827 | else | |
4828 | size += size_of_set_address; | |
a94dbf2c | 4829 | |
3f76745e JM |
4830 | /* End of line number info. marker. */ |
4831 | size += 1 + size_of_uleb128 (1) + 1; | |
a94dbf2c | 4832 | |
3f76745e JM |
4833 | function = 0; |
4834 | current_file = 1; | |
4835 | current_line = 1; | |
4836 | for (lt_index = 0; lt_index < separate_line_info_table_in_use; ) | |
4837 | { | |
4838 | register dw_separate_line_info_ref line_info | |
4839 | = &separate_line_info_table[lt_index]; | |
4840 | if (function != line_info->function) | |
4841 | { | |
4842 | function = line_info->function; | |
4843 | /* Set address register instruction. */ | |
f19a6894 | 4844 | size += size_of_set_address; |
3f76745e JM |
4845 | } |
4846 | else | |
f19a6894 JW |
4847 | { |
4848 | /* Advance pc instruction. */ | |
4849 | if (0) | |
4850 | size += 1 + 2; | |
4851 | else | |
4852 | size += size_of_set_address; | |
4853 | } | |
3f76745e JM |
4854 | |
4855 | if (line_info->dw_file_num != current_file) | |
4856 | { | |
4857 | /* Set file number instruction. */ | |
4858 | size += 1; | |
4859 | current_file = line_info->dw_file_num; | |
4860 | size += size_of_uleb128 (current_file); | |
4861 | } | |
4862 | ||
4863 | if (line_info->dw_line_num != current_line) | |
4864 | { | |
4865 | line_offset = line_info->dw_line_num - current_line; | |
4866 | line_delta = line_offset - DWARF_LINE_BASE; | |
4867 | current_line = line_info->dw_line_num; | |
4868 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
4869 | /* 1-byte special line number instruction. */ | |
4870 | size += 1; | |
4871 | else | |
4872 | { | |
4873 | /* Advance line instruction. */ | |
4874 | size += 1; | |
4875 | size += size_of_sleb128 (line_offset); | |
a94dbf2c | 4876 | |
3f76745e JM |
4877 | /* Generate line entry instruction. */ |
4878 | size += 1; | |
4879 | } | |
4880 | } | |
a94dbf2c | 4881 | |
3f76745e | 4882 | ++lt_index; |
a94dbf2c | 4883 | |
3f76745e JM |
4884 | /* If we're done with a function, end its sequence. */ |
4885 | if (lt_index == separate_line_info_table_in_use | |
4886 | || separate_line_info_table[lt_index].function != function) | |
4887 | { | |
4888 | current_file = 1; | |
4889 | current_line = 1; | |
71dfc51f | 4890 | |
3f76745e | 4891 | /* Advance pc instruction. */ |
f19a6894 JW |
4892 | if (0) |
4893 | size += 1 + 2; | |
4894 | else | |
4895 | size += size_of_set_address; | |
71dfc51f | 4896 | |
3f76745e JM |
4897 | /* End of line number info. marker. */ |
4898 | size += 1 + size_of_uleb128 (1) + 1; | |
4899 | } | |
a94dbf2c JM |
4900 | } |
4901 | ||
3f76745e | 4902 | return size; |
a94dbf2c JM |
4903 | } |
4904 | ||
3f76745e JM |
4905 | /* Return the size of the .debug_pubnames table generated for the |
4906 | compilation unit. */ | |
a94dbf2c | 4907 | |
3f76745e JM |
4908 | static unsigned long |
4909 | size_of_pubnames () | |
a94dbf2c | 4910 | { |
3f76745e JM |
4911 | register unsigned long size; |
4912 | register unsigned i; | |
469ac993 | 4913 | |
3f76745e JM |
4914 | size = DWARF_PUBNAMES_HEADER_SIZE; |
4915 | for (i = 0; i < pubname_table_in_use; ++i) | |
a94dbf2c | 4916 | { |
3f76745e JM |
4917 | register pubname_ref p = &pubname_table[i]; |
4918 | size += DWARF_OFFSET_SIZE + size_of_string (p->name); | |
a94dbf2c JM |
4919 | } |
4920 | ||
3f76745e JM |
4921 | size += DWARF_OFFSET_SIZE; |
4922 | return size; | |
a94dbf2c JM |
4923 | } |
4924 | ||
956d6950 | 4925 | /* Return the size of the information in the .debug_aranges section. */ |
469ac993 | 4926 | |
3f76745e JM |
4927 | static unsigned long |
4928 | size_of_aranges () | |
469ac993 | 4929 | { |
3f76745e | 4930 | register unsigned long size; |
469ac993 | 4931 | |
3f76745e | 4932 | size = DWARF_ARANGES_HEADER_SIZE; |
469ac993 | 4933 | |
3f76745e JM |
4934 | /* Count the address/length pair for this compilation unit. */ |
4935 | size += 2 * PTR_SIZE; | |
4936 | size += 2 * PTR_SIZE * arange_table_in_use; | |
469ac993 | 4937 | |
3f76745e JM |
4938 | /* Count the two zero words used to terminated the address range table. */ |
4939 | size += 2 * PTR_SIZE; | |
4940 | return size; | |
4941 | } | |
4942 | \f | |
4943 | /* Select the encoding of an attribute value. */ | |
4944 | ||
4945 | static enum dwarf_form | |
4946 | value_format (v) | |
4947 | dw_val_ref v; | |
4948 | { | |
4949 | switch (v->val_class) | |
469ac993 | 4950 | { |
3f76745e JM |
4951 | case dw_val_class_addr: |
4952 | return DW_FORM_addr; | |
4953 | case dw_val_class_loc: | |
4954 | switch (constant_size (size_of_locs (v->v.val_loc))) | |
469ac993 | 4955 | { |
3f76745e JM |
4956 | case 1: |
4957 | return DW_FORM_block1; | |
4958 | case 2: | |
4959 | return DW_FORM_block2; | |
469ac993 JM |
4960 | default: |
4961 | abort (); | |
4962 | } | |
3f76745e JM |
4963 | case dw_val_class_const: |
4964 | return DW_FORM_data4; | |
4965 | case dw_val_class_unsigned_const: | |
4966 | switch (constant_size (v->v.val_unsigned)) | |
4967 | { | |
4968 | case 1: | |
4969 | return DW_FORM_data1; | |
4970 | case 2: | |
4971 | return DW_FORM_data2; | |
4972 | case 4: | |
4973 | return DW_FORM_data4; | |
4974 | case 8: | |
4975 | return DW_FORM_data8; | |
4976 | default: | |
4977 | abort (); | |
4978 | } | |
4979 | case dw_val_class_long_long: | |
4980 | return DW_FORM_block1; | |
4981 | case dw_val_class_float: | |
4982 | return DW_FORM_block1; | |
4983 | case dw_val_class_flag: | |
4984 | return DW_FORM_flag; | |
4985 | case dw_val_class_die_ref: | |
4986 | return DW_FORM_ref; | |
4987 | case dw_val_class_fde_ref: | |
4988 | return DW_FORM_data; | |
4989 | case dw_val_class_lbl_id: | |
4990 | return DW_FORM_addr; | |
4991 | case dw_val_class_section_offset: | |
4992 | return DW_FORM_data; | |
4993 | case dw_val_class_str: | |
4994 | return DW_FORM_string; | |
469ac993 JM |
4995 | default: |
4996 | abort (); | |
4997 | } | |
a94dbf2c JM |
4998 | } |
4999 | ||
3f76745e | 5000 | /* Output the encoding of an attribute value. */ |
469ac993 | 5001 | |
3f76745e JM |
5002 | static void |
5003 | output_value_format (v) | |
5004 | dw_val_ref v; | |
a94dbf2c | 5005 | { |
3f76745e | 5006 | enum dwarf_form form = value_format (v); |
71dfc51f | 5007 | |
3f76745e | 5008 | output_uleb128 (form); |
c5cec899 | 5009 | if (flag_debug_asm) |
3f76745e | 5010 | fprintf (asm_out_file, " (%s)", dwarf_form_name (form)); |
141719a8 | 5011 | |
3f76745e JM |
5012 | fputc ('\n', asm_out_file); |
5013 | } | |
469ac993 | 5014 | |
3f76745e JM |
5015 | /* Output the .debug_abbrev section which defines the DIE abbreviation |
5016 | table. */ | |
469ac993 | 5017 | |
3f76745e JM |
5018 | static void |
5019 | output_abbrev_section () | |
5020 | { | |
5021 | unsigned long abbrev_id; | |
71dfc51f | 5022 | |
3f76745e JM |
5023 | dw_attr_ref a_attr; |
5024 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) | |
5025 | { | |
5026 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
71dfc51f | 5027 | |
3f76745e | 5028 | output_uleb128 (abbrev_id); |
c5cec899 | 5029 | if (flag_debug_asm) |
3f76745e | 5030 | fprintf (asm_out_file, " (abbrev code)"); |
469ac993 | 5031 | |
3f76745e JM |
5032 | fputc ('\n', asm_out_file); |
5033 | output_uleb128 (abbrev->die_tag); | |
c5cec899 | 5034 | if (flag_debug_asm) |
3f76745e JM |
5035 | fprintf (asm_out_file, " (TAG: %s)", |
5036 | dwarf_tag_name (abbrev->die_tag)); | |
71dfc51f | 5037 | |
3f76745e JM |
5038 | fputc ('\n', asm_out_file); |
5039 | fprintf (asm_out_file, "\t%s\t0x%x", ASM_BYTE_OP, | |
5040 | abbrev->die_child != NULL ? DW_children_yes : DW_children_no); | |
469ac993 | 5041 | |
c5cec899 | 5042 | if (flag_debug_asm) |
3f76745e JM |
5043 | fprintf (asm_out_file, "\t%s %s", |
5044 | ASM_COMMENT_START, | |
5045 | (abbrev->die_child != NULL | |
5046 | ? "DW_children_yes" : "DW_children_no")); | |
5047 | ||
5048 | fputc ('\n', asm_out_file); | |
5049 | ||
5050 | for (a_attr = abbrev->die_attr; a_attr != NULL; | |
5051 | a_attr = a_attr->dw_attr_next) | |
5052 | { | |
5053 | output_uleb128 (a_attr->dw_attr); | |
c5cec899 | 5054 | if (flag_debug_asm) |
3f76745e JM |
5055 | fprintf (asm_out_file, " (%s)", |
5056 | dwarf_attr_name (a_attr->dw_attr)); | |
5057 | ||
5058 | fputc ('\n', asm_out_file); | |
5059 | output_value_format (&a_attr->dw_attr_val); | |
469ac993 | 5060 | } |
469ac993 | 5061 | |
3f76745e | 5062 | fprintf (asm_out_file, "\t%s\t0,0\n", ASM_BYTE_OP); |
469ac993 | 5063 | } |
a94dbf2c JM |
5064 | } |
5065 | ||
3f76745e | 5066 | /* Output location description stack opcode's operands (if any). */ |
71dfc51f | 5067 | |
3f76745e JM |
5068 | static void |
5069 | output_loc_operands (loc) | |
5070 | register dw_loc_descr_ref loc; | |
a3f97cbb | 5071 | { |
3f76745e JM |
5072 | register dw_val_ref val1 = &loc->dw_loc_oprnd1; |
5073 | register dw_val_ref val2 = &loc->dw_loc_oprnd2; | |
71dfc51f | 5074 | |
3f76745e | 5075 | switch (loc->dw_loc_opc) |
a3f97cbb | 5076 | { |
3f76745e JM |
5077 | case DW_OP_addr: |
5078 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, val1->v.val_addr); | |
5079 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5080 | break; |
3f76745e JM |
5081 | case DW_OP_const1u: |
5082 | case DW_OP_const1s: | |
5083 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
5084 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5085 | break; |
3f76745e JM |
5086 | case DW_OP_const2u: |
5087 | case DW_OP_const2s: | |
5088 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
5089 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5090 | break; |
3f76745e JM |
5091 | case DW_OP_const4u: |
5092 | case DW_OP_const4s: | |
5093 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, val1->v.val_int); | |
5094 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5095 | break; |
3f76745e JM |
5096 | case DW_OP_const8u: |
5097 | case DW_OP_const8s: | |
5098 | abort (); | |
5099 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5100 | break; |
3f76745e JM |
5101 | case DW_OP_constu: |
5102 | output_uleb128 (val1->v.val_unsigned); | |
5103 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5104 | break; |
3f76745e JM |
5105 | case DW_OP_consts: |
5106 | output_sleb128 (val1->v.val_int); | |
5107 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5108 | break; |
3f76745e JM |
5109 | case DW_OP_pick: |
5110 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_int); | |
5111 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5112 | break; |
3f76745e JM |
5113 | case DW_OP_plus_uconst: |
5114 | output_uleb128 (val1->v.val_unsigned); | |
5115 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5116 | break; |
3f76745e JM |
5117 | case DW_OP_skip: |
5118 | case DW_OP_bra: | |
5119 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
5120 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5121 | break; |
3f76745e JM |
5122 | case DW_OP_breg0: |
5123 | case DW_OP_breg1: | |
5124 | case DW_OP_breg2: | |
5125 | case DW_OP_breg3: | |
5126 | case DW_OP_breg4: | |
5127 | case DW_OP_breg5: | |
5128 | case DW_OP_breg6: | |
5129 | case DW_OP_breg7: | |
5130 | case DW_OP_breg8: | |
5131 | case DW_OP_breg9: | |
5132 | case DW_OP_breg10: | |
5133 | case DW_OP_breg11: | |
5134 | case DW_OP_breg12: | |
5135 | case DW_OP_breg13: | |
5136 | case DW_OP_breg14: | |
5137 | case DW_OP_breg15: | |
5138 | case DW_OP_breg16: | |
5139 | case DW_OP_breg17: | |
5140 | case DW_OP_breg18: | |
5141 | case DW_OP_breg19: | |
5142 | case DW_OP_breg20: | |
5143 | case DW_OP_breg21: | |
5144 | case DW_OP_breg22: | |
5145 | case DW_OP_breg23: | |
5146 | case DW_OP_breg24: | |
5147 | case DW_OP_breg25: | |
5148 | case DW_OP_breg26: | |
5149 | case DW_OP_breg27: | |
5150 | case DW_OP_breg28: | |
5151 | case DW_OP_breg29: | |
5152 | case DW_OP_breg30: | |
5153 | case DW_OP_breg31: | |
5154 | output_sleb128 (val1->v.val_int); | |
5155 | fputc ('\n', asm_out_file); | |
5156 | break; | |
5157 | case DW_OP_regx: | |
5158 | output_uleb128 (val1->v.val_unsigned); | |
5159 | fputc ('\n', asm_out_file); | |
5160 | break; | |
5161 | case DW_OP_fbreg: | |
5162 | output_sleb128 (val1->v.val_int); | |
5163 | fputc ('\n', asm_out_file); | |
5164 | break; | |
5165 | case DW_OP_bregx: | |
5166 | output_uleb128 (val1->v.val_unsigned); | |
5167 | fputc ('\n', asm_out_file); | |
5168 | output_sleb128 (val2->v.val_int); | |
5169 | fputc ('\n', asm_out_file); | |
5170 | break; | |
5171 | case DW_OP_piece: | |
5172 | output_uleb128 (val1->v.val_unsigned); | |
5173 | fputc ('\n', asm_out_file); | |
5174 | break; | |
5175 | case DW_OP_deref_size: | |
5176 | case DW_OP_xderef_size: | |
5177 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
5178 | fputc ('\n', asm_out_file); | |
a3f97cbb JW |
5179 | break; |
5180 | default: | |
5181 | break; | |
5182 | } | |
a3f97cbb JW |
5183 | } |
5184 | ||
3f76745e | 5185 | /* Compute the offset of a sibling. */ |
71dfc51f | 5186 | |
3f76745e JM |
5187 | static unsigned long |
5188 | sibling_offset (die) | |
5189 | dw_die_ref die; | |
a3f97cbb | 5190 | { |
3f76745e | 5191 | unsigned long offset; |
71dfc51f | 5192 | |
3f76745e JM |
5193 | if (die->die_child_last == NULL) |
5194 | offset = die->die_offset + size_of_die (die); | |
5195 | else | |
5196 | offset = sibling_offset (die->die_child_last) + 1; | |
71dfc51f | 5197 | |
3f76745e | 5198 | return offset; |
a3f97cbb JW |
5199 | } |
5200 | ||
3f76745e JM |
5201 | /* Output the DIE and its attributes. Called recursively to generate |
5202 | the definitions of each child DIE. */ | |
71dfc51f | 5203 | |
a3f97cbb | 5204 | static void |
3f76745e JM |
5205 | output_die (die) |
5206 | register dw_die_ref die; | |
a3f97cbb | 5207 | { |
3f76745e JM |
5208 | register dw_attr_ref a; |
5209 | register dw_die_ref c; | |
5210 | register unsigned long ref_offset; | |
5211 | register unsigned long size; | |
5212 | register dw_loc_descr_ref loc; | |
a94dbf2c | 5213 | |
3f76745e | 5214 | output_uleb128 (die->die_abbrev); |
c5cec899 | 5215 | if (flag_debug_asm) |
2d8b0f3a | 5216 | fprintf (asm_out_file, " (DIE (0x%lx) %s)", |
3f76745e | 5217 | die->die_offset, dwarf_tag_name (die->die_tag)); |
a94dbf2c | 5218 | |
3f76745e | 5219 | fputc ('\n', asm_out_file); |
a94dbf2c | 5220 | |
3f76745e | 5221 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) |
a3f97cbb | 5222 | { |
3f76745e JM |
5223 | switch (a->dw_attr_val.val_class) |
5224 | { | |
5225 | case dw_val_class_addr: | |
5226 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, | |
5227 | a->dw_attr_val.v.val_addr); | |
5228 | break; | |
a3f97cbb | 5229 | |
3f76745e JM |
5230 | case dw_val_class_loc: |
5231 | size = size_of_locs (a->dw_attr_val.v.val_loc); | |
71dfc51f | 5232 | |
3f76745e JM |
5233 | /* Output the block length for this list of location operations. */ |
5234 | switch (constant_size (size)) | |
5235 | { | |
5236 | case 1: | |
5237 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, size); | |
5238 | break; | |
5239 | case 2: | |
5240 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, size); | |
5241 | break; | |
5242 | default: | |
5243 | abort (); | |
5244 | } | |
71dfc51f | 5245 | |
c5cec899 | 5246 | if (flag_debug_asm) |
3f76745e JM |
5247 | fprintf (asm_out_file, "\t%s %s", |
5248 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
71dfc51f | 5249 | |
3f76745e JM |
5250 | fputc ('\n', asm_out_file); |
5251 | for (loc = a->dw_attr_val.v.val_loc; loc != NULL; | |
5252 | loc = loc->dw_loc_next) | |
5253 | { | |
5254 | /* Output the opcode. */ | |
5255 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, loc->dw_loc_opc); | |
c5cec899 | 5256 | if (flag_debug_asm) |
3f76745e JM |
5257 | fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START, |
5258 | dwarf_stack_op_name (loc->dw_loc_opc)); | |
71dfc51f | 5259 | |
3f76745e | 5260 | fputc ('\n', asm_out_file); |
71dfc51f | 5261 | |
3f76745e JM |
5262 | /* Output the operand(s) (if any). */ |
5263 | output_loc_operands (loc); | |
5264 | } | |
a3f97cbb | 5265 | break; |
3f76745e JM |
5266 | |
5267 | case dw_val_class_const: | |
5268 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, a->dw_attr_val.v.val_int); | |
a3f97cbb | 5269 | break; |
3f76745e JM |
5270 | |
5271 | case dw_val_class_unsigned_const: | |
5272 | switch (constant_size (a->dw_attr_val.v.val_unsigned)) | |
5273 | { | |
5274 | case 1: | |
5275 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5276 | a->dw_attr_val.v.val_unsigned); | |
5277 | break; | |
5278 | case 2: | |
5279 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, | |
5280 | a->dw_attr_val.v.val_unsigned); | |
5281 | break; | |
5282 | case 4: | |
5283 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, | |
5284 | a->dw_attr_val.v.val_unsigned); | |
5285 | break; | |
5286 | case 8: | |
5287 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
5288 | a->dw_attr_val.v.val_long_long.hi, | |
5289 | a->dw_attr_val.v.val_long_long.low); | |
5290 | break; | |
5291 | default: | |
5292 | abort (); | |
5293 | } | |
a3f97cbb | 5294 | break; |
3f76745e JM |
5295 | |
5296 | case dw_val_class_long_long: | |
5297 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 8); | |
c5cec899 | 5298 | if (flag_debug_asm) |
3f76745e JM |
5299 | fprintf (asm_out_file, "\t%s %s", |
5300 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5301 | ||
5302 | fputc ('\n', asm_out_file); | |
5303 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
5304 | a->dw_attr_val.v.val_long_long.hi, | |
5305 | a->dw_attr_val.v.val_long_long.low); | |
5306 | ||
c5cec899 | 5307 | if (flag_debug_asm) |
3f76745e JM |
5308 | fprintf (asm_out_file, |
5309 | "\t%s long long constant", ASM_COMMENT_START); | |
5310 | ||
5311 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5312 | break; |
3f76745e JM |
5313 | |
5314 | case dw_val_class_float: | |
c84e2712 KG |
5315 | { |
5316 | register unsigned int i; | |
5317 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
5318 | a->dw_attr_val.v.val_float.length * 4); | |
5319 | if (flag_debug_asm) | |
5320 | fprintf (asm_out_file, "\t%s %s", | |
5321 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
5322 | ||
5323 | fputc ('\n', asm_out_file); | |
5324 | for (i = 0; i < a->dw_attr_val.v.val_float.length; ++i) | |
5325 | { | |
5326 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, | |
5327 | a->dw_attr_val.v.val_float.array[i]); | |
5328 | if (flag_debug_asm) | |
5329 | fprintf (asm_out_file, "\t%s fp constant word %u", | |
5330 | ASM_COMMENT_START, i); | |
5331 | ||
5332 | fputc ('\n', asm_out_file); | |
5333 | } | |
a3f97cbb | 5334 | break; |
c84e2712 | 5335 | } |
3f76745e JM |
5336 | |
5337 | case dw_val_class_flag: | |
5338 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, a->dw_attr_val.v.val_flag); | |
a3f97cbb | 5339 | break; |
3f76745e JM |
5340 | |
5341 | case dw_val_class_die_ref: | |
5342 | if (a->dw_attr_val.v.val_die_ref != NULL) | |
5343 | ref_offset = a->dw_attr_val.v.val_die_ref->die_offset; | |
5344 | else if (a->dw_attr == DW_AT_sibling) | |
5345 | ref_offset = sibling_offset(die); | |
5346 | else | |
5347 | abort (); | |
5348 | ||
5349 | ASM_OUTPUT_DWARF_DATA (asm_out_file, ref_offset); | |
a3f97cbb | 5350 | break; |
3f76745e JM |
5351 | |
5352 | case dw_val_class_fde_ref: | |
a6ab3aad JM |
5353 | { |
5354 | char l1[20]; | |
5355 | ASM_GENERATE_INTERNAL_LABEL | |
5356 | (l1, FDE_AFTER_SIZE_LABEL, a->dw_attr_val.v.val_fde_index * 2); | |
5357 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, l1); | |
5358 | fprintf (asm_out_file, " - %d", DWARF_OFFSET_SIZE); | |
5359 | } | |
a3f97cbb | 5360 | break; |
a3f97cbb | 5361 | |
3f76745e JM |
5362 | case dw_val_class_lbl_id: |
5363 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, a->dw_attr_val.v.val_lbl_id); | |
5364 | break; | |
71dfc51f | 5365 | |
3f76745e JM |
5366 | case dw_val_class_section_offset: |
5367 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, | |
1553e85a JL |
5368 | stripattributes |
5369 | (a->dw_attr_val.v.val_section)); | |
3f76745e | 5370 | break; |
a3f97cbb | 5371 | |
3f76745e | 5372 | case dw_val_class_str: |
8d4e65a6 JL |
5373 | if (flag_debug_asm) |
5374 | ASM_OUTPUT_DWARF_STRING (asm_out_file, a->dw_attr_val.v.val_str); | |
5375 | else | |
5376 | ASM_OUTPUT_ASCII (asm_out_file, | |
5377 | a->dw_attr_val.v.val_str, | |
c84e2712 | 5378 | (int) strlen (a->dw_attr_val.v.val_str) + 1); |
3f76745e | 5379 | break; |
b2932ae5 | 5380 | |
3f76745e JM |
5381 | default: |
5382 | abort (); | |
5383 | } | |
a94dbf2c | 5384 | |
3f76745e JM |
5385 | if (a->dw_attr_val.val_class != dw_val_class_loc |
5386 | && a->dw_attr_val.val_class != dw_val_class_long_long | |
5387 | && a->dw_attr_val.val_class != dw_val_class_float) | |
5388 | { | |
c5cec899 | 5389 | if (flag_debug_asm) |
3f76745e JM |
5390 | fprintf (asm_out_file, "\t%s %s", |
5391 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
b2932ae5 | 5392 | |
3f76745e JM |
5393 | fputc ('\n', asm_out_file); |
5394 | } | |
5395 | } | |
71dfc51f | 5396 | |
3f76745e JM |
5397 | for (c = die->die_child; c != NULL; c = c->die_sib) |
5398 | output_die (c); | |
71dfc51f | 5399 | |
3f76745e | 5400 | if (die->die_child != NULL) |
7e23cb16 | 5401 | { |
3f76745e JM |
5402 | /* Add null byte to terminate sibling list. */ |
5403 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5404 | if (flag_debug_asm) |
2d8b0f3a | 5405 | fprintf (asm_out_file, "\t%s end of children of DIE 0x%lx", |
3f76745e JM |
5406 | ASM_COMMENT_START, die->die_offset); |
5407 | ||
7e23cb16 JM |
5408 | fputc ('\n', asm_out_file); |
5409 | } | |
3f76745e | 5410 | } |
71dfc51f | 5411 | |
3f76745e JM |
5412 | /* Output the compilation unit that appears at the beginning of the |
5413 | .debug_info section, and precedes the DIE descriptions. */ | |
71dfc51f | 5414 | |
3f76745e JM |
5415 | static void |
5416 | output_compilation_unit_header () | |
5417 | { | |
5418 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset - DWARF_OFFSET_SIZE); | |
c5cec899 | 5419 | if (flag_debug_asm) |
3f76745e JM |
5420 | fprintf (asm_out_file, "\t%s Length of Compilation Unit Info.", |
5421 | ASM_COMMENT_START); | |
71dfc51f | 5422 | |
a3f97cbb | 5423 | fputc ('\n', asm_out_file); |
3f76745e | 5424 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
c5cec899 | 5425 | if (flag_debug_asm) |
3f76745e | 5426 | fprintf (asm_out_file, "\t%s DWARF version number", ASM_COMMENT_START); |
71dfc51f | 5427 | |
a3f97cbb | 5428 | fputc ('\n', asm_out_file); |
1553e85a | 5429 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (ABBREV_SECTION)); |
c5cec899 | 5430 | if (flag_debug_asm) |
3f76745e JM |
5431 | fprintf (asm_out_file, "\t%s Offset Into Abbrev. Section", |
5432 | ASM_COMMENT_START); | |
71dfc51f | 5433 | |
a3f97cbb | 5434 | fputc ('\n', asm_out_file); |
3f76745e | 5435 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); |
c5cec899 | 5436 | if (flag_debug_asm) |
3f76745e | 5437 | fprintf (asm_out_file, "\t%s Pointer Size (in bytes)", ASM_COMMENT_START); |
71dfc51f | 5438 | |
a3f97cbb | 5439 | fputc ('\n', asm_out_file); |
a3f97cbb JW |
5440 | } |
5441 | ||
a1d7ffe3 JM |
5442 | /* The DWARF2 pubname for a nested thingy looks like "A::f". The output |
5443 | of decl_printable_name for C++ looks like "A::f(int)". Let's drop the | |
5444 | argument list, and maybe the scope. */ | |
5445 | ||
71dfc51f | 5446 | static char * |
a1d7ffe3 JM |
5447 | dwarf2_name (decl, scope) |
5448 | tree decl; | |
5449 | int scope; | |
5450 | { | |
5451 | return (*decl_printable_name) (decl, scope ? 1 : 0); | |
5452 | } | |
5453 | ||
d291dd49 | 5454 | /* Add a new entry to .debug_pubnames if appropriate. */ |
71dfc51f | 5455 | |
d291dd49 JM |
5456 | static void |
5457 | add_pubname (decl, die) | |
5458 | tree decl; | |
5459 | dw_die_ref die; | |
5460 | { | |
5461 | pubname_ref p; | |
5462 | ||
5463 | if (! TREE_PUBLIC (decl)) | |
5464 | return; | |
5465 | ||
5466 | if (pubname_table_in_use == pubname_table_allocated) | |
5467 | { | |
5468 | pubname_table_allocated += PUBNAME_TABLE_INCREMENT; | |
5469 | pubname_table = (pubname_ref) xrealloc | |
5470 | (pubname_table, pubname_table_allocated * sizeof (pubname_entry)); | |
5471 | } | |
71dfc51f | 5472 | |
d291dd49 JM |
5473 | p = &pubname_table[pubname_table_in_use++]; |
5474 | p->die = die; | |
a1d7ffe3 JM |
5475 | |
5476 | p->name = xstrdup (dwarf2_name (decl, 1)); | |
d291dd49 JM |
5477 | } |
5478 | ||
a3f97cbb JW |
5479 | /* Output the public names table used to speed up access to externally |
5480 | visible names. For now, only generate entries for externally | |
5481 | visible procedures. */ | |
71dfc51f | 5482 | |
a3f97cbb JW |
5483 | static void |
5484 | output_pubnames () | |
5485 | { | |
d291dd49 | 5486 | register unsigned i; |
71dfc51f RK |
5487 | register unsigned long pubnames_length = size_of_pubnames (); |
5488 | ||
5489 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pubnames_length); | |
5490 | ||
c5cec899 | 5491 | if (flag_debug_asm) |
71dfc51f RK |
5492 | fprintf (asm_out_file, "\t%s Length of Public Names Info.", |
5493 | ASM_COMMENT_START); | |
5494 | ||
a3f97cbb JW |
5495 | fputc ('\n', asm_out_file); |
5496 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
71dfc51f | 5497 | |
c5cec899 | 5498 | if (flag_debug_asm) |
71dfc51f RK |
5499 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5500 | ||
a3f97cbb | 5501 | fputc ('\n', asm_out_file); |
1553e85a | 5502 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (DEBUG_INFO_SECTION)); |
c5cec899 | 5503 | if (flag_debug_asm) |
71dfc51f RK |
5504 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
5505 | ASM_COMMENT_START); | |
5506 | ||
a3f97cbb | 5507 | fputc ('\n', asm_out_file); |
7e23cb16 | 5508 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset); |
c5cec899 | 5509 | if (flag_debug_asm) |
71dfc51f RK |
5510 | fprintf (asm_out_file, "\t%s Compilation Unit Length", ASM_COMMENT_START); |
5511 | ||
a3f97cbb | 5512 | fputc ('\n', asm_out_file); |
d291dd49 | 5513 | for (i = 0; i < pubname_table_in_use; ++i) |
a3f97cbb | 5514 | { |
d291dd49 | 5515 | register pubname_ref pub = &pubname_table[i]; |
71dfc51f | 5516 | |
7e23cb16 | 5517 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pub->die->die_offset); |
c5cec899 | 5518 | if (flag_debug_asm) |
71dfc51f RK |
5519 | fprintf (asm_out_file, "\t%s DIE offset", ASM_COMMENT_START); |
5520 | ||
d291dd49 JM |
5521 | fputc ('\n', asm_out_file); |
5522 | ||
c5cec899 | 5523 | if (flag_debug_asm) |
8d4e65a6 JL |
5524 | { |
5525 | ASM_OUTPUT_DWARF_STRING (asm_out_file, pub->name); | |
5526 | fprintf (asm_out_file, "%s external name", ASM_COMMENT_START); | |
5527 | } | |
5528 | else | |
5529 | { | |
c84e2712 KG |
5530 | ASM_OUTPUT_ASCII (asm_out_file, pub->name, |
5531 | (int) strlen (pub->name) + 1); | |
8d4e65a6 | 5532 | } |
71dfc51f | 5533 | |
d291dd49 | 5534 | fputc ('\n', asm_out_file); |
a3f97cbb | 5535 | } |
71dfc51f | 5536 | |
7e23cb16 | 5537 | ASM_OUTPUT_DWARF_DATA (asm_out_file, 0); |
a3f97cbb JW |
5538 | fputc ('\n', asm_out_file); |
5539 | } | |
5540 | ||
d291dd49 | 5541 | /* Add a new entry to .debug_aranges if appropriate. */ |
71dfc51f | 5542 | |
d291dd49 JM |
5543 | static void |
5544 | add_arange (decl, die) | |
5545 | tree decl; | |
5546 | dw_die_ref die; | |
5547 | { | |
5548 | if (! DECL_SECTION_NAME (decl)) | |
5549 | return; | |
5550 | ||
5551 | if (arange_table_in_use == arange_table_allocated) | |
5552 | { | |
5553 | arange_table_allocated += ARANGE_TABLE_INCREMENT; | |
71dfc51f RK |
5554 | arange_table |
5555 | = (arange_ref) xrealloc (arange_table, | |
5556 | arange_table_allocated * sizeof (dw_die_ref)); | |
d291dd49 | 5557 | } |
71dfc51f | 5558 | |
d291dd49 JM |
5559 | arange_table[arange_table_in_use++] = die; |
5560 | } | |
5561 | ||
a3f97cbb JW |
5562 | /* Output the information that goes into the .debug_aranges table. |
5563 | Namely, define the beginning and ending address range of the | |
5564 | text section generated for this compilation unit. */ | |
71dfc51f | 5565 | |
a3f97cbb JW |
5566 | static void |
5567 | output_aranges () | |
5568 | { | |
d291dd49 | 5569 | register unsigned i; |
71dfc51f RK |
5570 | register unsigned long aranges_length = size_of_aranges (); |
5571 | ||
5572 | ASM_OUTPUT_DWARF_DATA (asm_out_file, aranges_length); | |
c5cec899 | 5573 | if (flag_debug_asm) |
71dfc51f RK |
5574 | fprintf (asm_out_file, "\t%s Length of Address Ranges Info.", |
5575 | ASM_COMMENT_START); | |
5576 | ||
a3f97cbb JW |
5577 | fputc ('\n', asm_out_file); |
5578 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
c5cec899 | 5579 | if (flag_debug_asm) |
71dfc51f RK |
5580 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5581 | ||
a3f97cbb | 5582 | fputc ('\n', asm_out_file); |
1553e85a | 5583 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (DEBUG_INFO_SECTION)); |
c5cec899 | 5584 | if (flag_debug_asm) |
71dfc51f RK |
5585 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", |
5586 | ASM_COMMENT_START); | |
5587 | ||
a3f97cbb JW |
5588 | fputc ('\n', asm_out_file); |
5589 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); | |
c5cec899 | 5590 | if (flag_debug_asm) |
71dfc51f RK |
5591 | fprintf (asm_out_file, "\t%s Size of Address", ASM_COMMENT_START); |
5592 | ||
a3f97cbb JW |
5593 | fputc ('\n', asm_out_file); |
5594 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5595 | if (flag_debug_asm) |
71dfc51f RK |
5596 | fprintf (asm_out_file, "\t%s Size of Segment Descriptor", |
5597 | ASM_COMMENT_START); | |
5598 | ||
a3f97cbb JW |
5599 | fputc ('\n', asm_out_file); |
5600 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 4); | |
7e23cb16 JM |
5601 | if (PTR_SIZE == 8) |
5602 | fprintf (asm_out_file, ",0,0"); | |
71dfc51f | 5603 | |
c5cec899 | 5604 | if (flag_debug_asm) |
71dfc51f RK |
5605 | fprintf (asm_out_file, "\t%s Pad to %d byte boundary", |
5606 | ASM_COMMENT_START, 2 * PTR_SIZE); | |
5607 | ||
a3f97cbb | 5608 | fputc ('\n', asm_out_file); |
49bcd085 | 5609 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, stripattributes (TEXT_SECTION)); |
c5cec899 | 5610 | if (flag_debug_asm) |
71dfc51f RK |
5611 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
5612 | ||
a3f97cbb | 5613 | fputc ('\n', asm_out_file); |
71208e03 JW |
5614 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, text_end_label, |
5615 | stripattributes (TEXT_SECTION)); | |
c5cec899 | 5616 | if (flag_debug_asm) |
71dfc51f RK |
5617 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
5618 | ||
a3f97cbb | 5619 | fputc ('\n', asm_out_file); |
d291dd49 JM |
5620 | for (i = 0; i < arange_table_in_use; ++i) |
5621 | { | |
5622 | dw_die_ref a = arange_table[i]; | |
71dfc51f | 5623 | |
d291dd49 JM |
5624 | if (a->die_tag == DW_TAG_subprogram) |
5625 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, get_AT_low_pc (a)); | |
5626 | else | |
a1d7ffe3 JM |
5627 | { |
5628 | char *name = get_AT_string (a, DW_AT_MIPS_linkage_name); | |
5629 | if (! name) | |
5630 | name = get_AT_string (a, DW_AT_name); | |
71dfc51f | 5631 | |
a1d7ffe3 JM |
5632 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, name); |
5633 | } | |
71dfc51f | 5634 | |
c5cec899 | 5635 | if (flag_debug_asm) |
71dfc51f RK |
5636 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); |
5637 | ||
d291dd49 JM |
5638 | fputc ('\n', asm_out_file); |
5639 | if (a->die_tag == DW_TAG_subprogram) | |
7e23cb16 JM |
5640 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, get_AT_hi_pc (a), |
5641 | get_AT_low_pc (a)); | |
d291dd49 | 5642 | else |
7e23cb16 JM |
5643 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, |
5644 | get_AT_unsigned (a, DW_AT_byte_size)); | |
71dfc51f | 5645 | |
c5cec899 | 5646 | if (flag_debug_asm) |
71dfc51f RK |
5647 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); |
5648 | ||
d291dd49 JM |
5649 | fputc ('\n', asm_out_file); |
5650 | } | |
71dfc51f | 5651 | |
a3f97cbb | 5652 | /* Output the terminator words. */ |
7e23cb16 | 5653 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb | 5654 | fputc ('\n', asm_out_file); |
7e23cb16 | 5655 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
a3f97cbb JW |
5656 | fputc ('\n', asm_out_file); |
5657 | } | |
5658 | ||
5659 | /* Output the source line number correspondence information. This | |
f19a6894 JW |
5660 | information goes into the .debug_line section. |
5661 | ||
5662 | If the format of this data changes, then the function size_of_line_info | |
5663 | must also be adjusted the same way. */ | |
71dfc51f | 5664 | |
a3f97cbb JW |
5665 | static void |
5666 | output_line_info () | |
5667 | { | |
a3f97cbb JW |
5668 | char line_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
5669 | char prev_line_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
5670 | register unsigned opc; | |
5671 | register unsigned n_op_args; | |
a3f97cbb JW |
5672 | register unsigned long ft_index; |
5673 | register unsigned long lt_index; | |
5674 | register unsigned long current_line; | |
5675 | register long line_offset; | |
5676 | register long line_delta; | |
5677 | register unsigned long current_file; | |
e90b62db | 5678 | register unsigned long function; |
71dfc51f | 5679 | |
7e23cb16 | 5680 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_info ()); |
c5cec899 | 5681 | if (flag_debug_asm) |
71dfc51f RK |
5682 | fprintf (asm_out_file, "\t%s Length of Source Line Info.", |
5683 | ASM_COMMENT_START); | |
5684 | ||
a3f97cbb JW |
5685 | fputc ('\n', asm_out_file); |
5686 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
c5cec899 | 5687 | if (flag_debug_asm) |
71dfc51f RK |
5688 | fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START); |
5689 | ||
a3f97cbb | 5690 | fputc ('\n', asm_out_file); |
7e23cb16 | 5691 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_prolog ()); |
c5cec899 | 5692 | if (flag_debug_asm) |
71dfc51f RK |
5693 | fprintf (asm_out_file, "\t%s Prolog Length", ASM_COMMENT_START); |
5694 | ||
a3f97cbb JW |
5695 | fputc ('\n', asm_out_file); |
5696 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_MIN_INSTR_LENGTH); | |
c5cec899 | 5697 | if (flag_debug_asm) |
71dfc51f RK |
5698 | fprintf (asm_out_file, "\t%s Minimum Instruction Length", |
5699 | ASM_COMMENT_START); | |
5700 | ||
a3f97cbb JW |
5701 | fputc ('\n', asm_out_file); |
5702 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_DEFAULT_IS_STMT_START); | |
c5cec899 | 5703 | if (flag_debug_asm) |
71dfc51f RK |
5704 | fprintf (asm_out_file, "\t%s Default is_stmt_start flag", |
5705 | ASM_COMMENT_START); | |
5706 | ||
a3f97cbb JW |
5707 | fputc ('\n', asm_out_file); |
5708 | fprintf (asm_out_file, "\t%s\t%d", ASM_BYTE_OP, DWARF_LINE_BASE); | |
c5cec899 | 5709 | if (flag_debug_asm) |
71dfc51f RK |
5710 | fprintf (asm_out_file, "\t%s Line Base Value (Special Opcodes)", |
5711 | ASM_COMMENT_START); | |
5712 | ||
a3f97cbb JW |
5713 | fputc ('\n', asm_out_file); |
5714 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_RANGE); | |
c5cec899 | 5715 | if (flag_debug_asm) |
71dfc51f RK |
5716 | fprintf (asm_out_file, "\t%s Line Range Value (Special Opcodes)", |
5717 | ASM_COMMENT_START); | |
5718 | ||
a3f97cbb JW |
5719 | fputc ('\n', asm_out_file); |
5720 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_OPCODE_BASE); | |
c5cec899 | 5721 | if (flag_debug_asm) |
71dfc51f RK |
5722 | fprintf (asm_out_file, "\t%s Special Opcode Base", ASM_COMMENT_START); |
5723 | ||
a3f97cbb JW |
5724 | fputc ('\n', asm_out_file); |
5725 | for (opc = 1; opc < DWARF_LINE_OPCODE_BASE; ++opc) | |
5726 | { | |
5727 | switch (opc) | |
5728 | { | |
5729 | case DW_LNS_advance_pc: | |
5730 | case DW_LNS_advance_line: | |
5731 | case DW_LNS_set_file: | |
5732 | case DW_LNS_set_column: | |
5733 | case DW_LNS_fixed_advance_pc: | |
5734 | n_op_args = 1; | |
5735 | break; | |
5736 | default: | |
5737 | n_op_args = 0; | |
5738 | break; | |
5739 | } | |
5740 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, n_op_args); | |
c5cec899 | 5741 | if (flag_debug_asm) |
71dfc51f RK |
5742 | fprintf (asm_out_file, "\t%s opcode: 0x%x has %d args", |
5743 | ASM_COMMENT_START, opc, n_op_args); | |
a3f97cbb JW |
5744 | fputc ('\n', asm_out_file); |
5745 | } | |
71dfc51f | 5746 | |
c5cec899 | 5747 | if (flag_debug_asm) |
71dfc51f RK |
5748 | fprintf (asm_out_file, "%s Include Directory Table\n", ASM_COMMENT_START); |
5749 | ||
a3f97cbb JW |
5750 | /* Include directory table is empty, at present */ |
5751 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
5752 | fputc ('\n', asm_out_file); | |
c5cec899 | 5753 | if (flag_debug_asm) |
71dfc51f RK |
5754 | fprintf (asm_out_file, "%s File Name Table\n", ASM_COMMENT_START); |
5755 | ||
a3f97cbb JW |
5756 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) |
5757 | { | |
c5cec899 | 5758 | if (flag_debug_asm) |
8d4e65a6 JL |
5759 | { |
5760 | ASM_OUTPUT_DWARF_STRING (asm_out_file, file_table[ft_index]); | |
2d8b0f3a | 5761 | fprintf (asm_out_file, "%s File Entry: 0x%lx", |
8d4e65a6 JL |
5762 | ASM_COMMENT_START, ft_index); |
5763 | } | |
5764 | else | |
5765 | { | |
5766 | ASM_OUTPUT_ASCII (asm_out_file, | |
5767 | file_table[ft_index], | |
c84e2712 | 5768 | (int) strlen (file_table[ft_index]) + 1); |
8d4e65a6 | 5769 | } |
71dfc51f | 5770 | |
a3f97cbb | 5771 | fputc ('\n', asm_out_file); |
71dfc51f | 5772 | |
a3f97cbb JW |
5773 | /* Include directory index */ |
5774 | output_uleb128 (0); | |
5775 | fputc ('\n', asm_out_file); | |
71dfc51f | 5776 | |
a3f97cbb JW |
5777 | /* Modification time */ |
5778 | output_uleb128 (0); | |
5779 | fputc ('\n', asm_out_file); | |
71dfc51f | 5780 | |
a3f97cbb JW |
5781 | /* File length in bytes */ |
5782 | output_uleb128 (0); | |
5783 | fputc ('\n', asm_out_file); | |
5784 | } | |
71dfc51f | 5785 | |
a3f97cbb JW |
5786 | /* Terminate the file name table */ |
5787 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
5788 | fputc ('\n', asm_out_file); | |
5789 | ||
5790 | /* Set the address register to the first location in the text section */ | |
5791 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5792 | if (flag_debug_asm) |
71dfc51f RK |
5793 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); |
5794 | ||
a3f97cbb JW |
5795 | fputc ('\n', asm_out_file); |
5796 | output_uleb128 (1 + PTR_SIZE); | |
5797 | fputc ('\n', asm_out_file); | |
5798 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5799 | fputc ('\n', asm_out_file); | |
49bcd085 | 5800 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, stripattributes (TEXT_SECTION)); |
a3f97cbb JW |
5801 | fputc ('\n', asm_out_file); |
5802 | ||
5803 | /* Generate the line number to PC correspondence table, encoded as | |
5804 | a series of state machine operations. */ | |
5805 | current_file = 1; | |
5806 | current_line = 1; | |
49bcd085 | 5807 | strcpy (prev_line_label, stripattributes (TEXT_SECTION)); |
a3f97cbb JW |
5808 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) |
5809 | { | |
e90b62db | 5810 | register dw_line_info_ref line_info; |
71dfc51f | 5811 | |
f19a6894 JW |
5812 | /* Emit debug info for the address of the current line, choosing |
5813 | the encoding that uses the least amount of space. */ | |
5814 | /* ??? Unfortunately, we have little choice here currently, and must | |
5815 | always use the most general form. Gcc does not know the address | |
5816 | delta itself, so we can't use DW_LNS_advance_pc. There are no known | |
5817 | dwarf2 aware assemblers at this time, so we can't use any special | |
5818 | pseudo ops that would allow the assembler to optimally encode this for | |
5819 | us. Many ports do have length attributes which will give an upper | |
5820 | bound on the address range. We could perhaps use length attributes | |
5821 | to determine when it is safe to use DW_LNS_fixed_advance_pc. */ | |
5c90448c | 5822 | ASM_GENERATE_INTERNAL_LABEL (line_label, LINE_CODE_LABEL, lt_index); |
f19a6894 JW |
5823 | if (0) |
5824 | { | |
5825 | /* This can handle deltas up to 0xffff. This takes 3 bytes. */ | |
5826 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5827 | if (flag_debug_asm) |
f19a6894 JW |
5828 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5829 | ASM_COMMENT_START); | |
5830 | ||
5831 | fputc ('\n', asm_out_file); | |
5832 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, prev_line_label); | |
5833 | fputc ('\n', asm_out_file); | |
5834 | } | |
5835 | else | |
5836 | { | |
5837 | /* This can handle any delta. This takes 4+PTR_SIZE bytes. */ | |
5838 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5839 | if (flag_debug_asm) |
f19a6894 JW |
5840 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5841 | ASM_COMMENT_START); | |
5842 | fputc ('\n', asm_out_file); | |
5843 | output_uleb128 (1 + PTR_SIZE); | |
5844 | fputc ('\n', asm_out_file); | |
5845 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5846 | fputc ('\n', asm_out_file); | |
5847 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5848 | fputc ('\n', asm_out_file); | |
5849 | } | |
5850 | strcpy (prev_line_label, line_label); | |
5851 | ||
5852 | /* Emit debug info for the source file of the current line, if | |
5853 | different from the previous line. */ | |
a3f97cbb JW |
5854 | line_info = &line_info_table[lt_index]; |
5855 | if (line_info->dw_file_num != current_file) | |
5856 | { | |
5857 | current_file = line_info->dw_file_num; | |
5858 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 5859 | if (flag_debug_asm) |
71dfc51f RK |
5860 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
5861 | ||
a3f97cbb JW |
5862 | fputc ('\n', asm_out_file); |
5863 | output_uleb128 (current_file); | |
c5cec899 | 5864 | if (flag_debug_asm) |
b2932ae5 | 5865 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 5866 | |
a3f97cbb JW |
5867 | fputc ('\n', asm_out_file); |
5868 | } | |
71dfc51f | 5869 | |
f19a6894 JW |
5870 | /* Emit debug info for the current line number, choosing the encoding |
5871 | that uses the least amount of space. */ | |
a94dbf2c JM |
5872 | line_offset = line_info->dw_line_num - current_line; |
5873 | line_delta = line_offset - DWARF_LINE_BASE; | |
5874 | current_line = line_info->dw_line_num; | |
5875 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
a3f97cbb | 5876 | { |
f19a6894 JW |
5877 | /* This can handle deltas from -10 to 234, using the current |
5878 | definitions of DWARF_LINE_BASE and DWARF_LINE_RANGE. This | |
5879 | takes 1 byte. */ | |
a94dbf2c JM |
5880 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, |
5881 | DWARF_LINE_OPCODE_BASE + line_delta); | |
c5cec899 | 5882 | if (flag_debug_asm) |
a94dbf2c | 5883 | fprintf (asm_out_file, |
2d8b0f3a | 5884 | "\t%s line %ld", ASM_COMMENT_START, current_line); |
71dfc51f | 5885 | |
a94dbf2c JM |
5886 | fputc ('\n', asm_out_file); |
5887 | } | |
5888 | else | |
5889 | { | |
f19a6894 JW |
5890 | /* This can handle any delta. This takes at least 4 bytes, depending |
5891 | on the value being encoded. */ | |
a94dbf2c | 5892 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); |
c5cec899 | 5893 | if (flag_debug_asm) |
2d8b0f3a | 5894 | fprintf (asm_out_file, "\t%s advance to line %ld", |
71dfc51f RK |
5895 | ASM_COMMENT_START, current_line); |
5896 | ||
a94dbf2c JM |
5897 | fputc ('\n', asm_out_file); |
5898 | output_sleb128 (line_offset); | |
5899 | fputc ('\n', asm_out_file); | |
5900 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
5901 | fputc ('\n', asm_out_file); | |
a3f97cbb | 5902 | } |
a3f97cbb JW |
5903 | } |
5904 | ||
f19a6894 JW |
5905 | /* Emit debug info for the address of the end of the function. */ |
5906 | if (0) | |
5907 | { | |
5908 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5909 | if (flag_debug_asm) |
f19a6894 JW |
5910 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5911 | ASM_COMMENT_START); | |
71dfc51f | 5912 | |
f19a6894 JW |
5913 | fputc ('\n', asm_out_file); |
5914 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, text_end_label, prev_line_label); | |
5915 | fputc ('\n', asm_out_file); | |
5916 | } | |
5917 | else | |
5918 | { | |
5919 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5920 | if (flag_debug_asm) |
f19a6894 JW |
5921 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); |
5922 | fputc ('\n', asm_out_file); | |
5923 | output_uleb128 (1 + PTR_SIZE); | |
5924 | fputc ('\n', asm_out_file); | |
5925 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5926 | fputc ('\n', asm_out_file); | |
5927 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_end_label); | |
5928 | fputc ('\n', asm_out_file); | |
5929 | } | |
bdb669cb | 5930 | |
a3f97cbb JW |
5931 | /* Output the marker for the end of the line number info. */ |
5932 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5933 | if (flag_debug_asm) |
71dfc51f RK |
5934 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", ASM_COMMENT_START); |
5935 | ||
a3f97cbb JW |
5936 | fputc ('\n', asm_out_file); |
5937 | output_uleb128 (1); | |
5938 | fputc ('\n', asm_out_file); | |
5939 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
5940 | fputc ('\n', asm_out_file); | |
e90b62db JM |
5941 | |
5942 | function = 0; | |
5943 | current_file = 1; | |
5944 | current_line = 1; | |
5945 | for (lt_index = 0; lt_index < separate_line_info_table_in_use; ) | |
5946 | { | |
5947 | register dw_separate_line_info_ref line_info | |
5948 | = &separate_line_info_table[lt_index]; | |
71dfc51f | 5949 | |
f19a6894 JW |
5950 | /* Emit debug info for the address of the current line. If this is |
5951 | a new function, or the first line of a function, then we need | |
5952 | to handle it differently. */ | |
5c90448c JM |
5953 | ASM_GENERATE_INTERNAL_LABEL (line_label, SEPARATE_LINE_CODE_LABEL, |
5954 | lt_index); | |
e90b62db JM |
5955 | if (function != line_info->function) |
5956 | { | |
5957 | function = line_info->function; | |
71dfc51f | 5958 | |
e90b62db JM |
5959 | /* Set the address register to the first line in the function */ |
5960 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5961 | if (flag_debug_asm) |
e90b62db JM |
5962 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5963 | ASM_COMMENT_START); | |
71dfc51f | 5964 | |
e90b62db JM |
5965 | fputc ('\n', asm_out_file); |
5966 | output_uleb128 (1 + PTR_SIZE); | |
5967 | fputc ('\n', asm_out_file); | |
5968 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5969 | fputc ('\n', asm_out_file); | |
5970 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
5971 | fputc ('\n', asm_out_file); | |
5972 | } | |
5973 | else | |
5974 | { | |
f19a6894 JW |
5975 | /* ??? See the DW_LNS_advance_pc comment above. */ |
5976 | if (0) | |
5977 | { | |
5978 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 5979 | if (flag_debug_asm) |
f19a6894 JW |
5980 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
5981 | ASM_COMMENT_START); | |
71dfc51f | 5982 | |
f19a6894 JW |
5983 | fputc ('\n', asm_out_file); |
5984 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
5985 | prev_line_label); | |
5986 | fputc ('\n', asm_out_file); | |
5987 | } | |
5988 | else | |
5989 | { | |
5990 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 5991 | if (flag_debug_asm) |
f19a6894 JW |
5992 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
5993 | ASM_COMMENT_START); | |
5994 | fputc ('\n', asm_out_file); | |
5995 | output_uleb128 (1 + PTR_SIZE); | |
5996 | fputc ('\n', asm_out_file); | |
5997 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
5998 | fputc ('\n', asm_out_file); | |
5999 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
6000 | fputc ('\n', asm_out_file); | |
6001 | } | |
e90b62db | 6002 | } |
f19a6894 | 6003 | strcpy (prev_line_label, line_label); |
71dfc51f | 6004 | |
f19a6894 JW |
6005 | /* Emit debug info for the source file of the current line, if |
6006 | different from the previous line. */ | |
e90b62db JM |
6007 | if (line_info->dw_file_num != current_file) |
6008 | { | |
6009 | current_file = line_info->dw_file_num; | |
6010 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
c5cec899 | 6011 | if (flag_debug_asm) |
71dfc51f RK |
6012 | fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START); |
6013 | ||
e90b62db JM |
6014 | fputc ('\n', asm_out_file); |
6015 | output_uleb128 (current_file); | |
c5cec899 | 6016 | if (flag_debug_asm) |
b2932ae5 | 6017 | fprintf (asm_out_file, " (\"%s\")", file_table[current_file]); |
71dfc51f | 6018 | |
e90b62db JM |
6019 | fputc ('\n', asm_out_file); |
6020 | } | |
71dfc51f | 6021 | |
f19a6894 JW |
6022 | /* Emit debug info for the current line number, choosing the encoding |
6023 | that uses the least amount of space. */ | |
e90b62db JM |
6024 | if (line_info->dw_line_num != current_line) |
6025 | { | |
6026 | line_offset = line_info->dw_line_num - current_line; | |
6027 | line_delta = line_offset - DWARF_LINE_BASE; | |
6028 | current_line = line_info->dw_line_num; | |
6029 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
6030 | { | |
6031 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
6032 | DWARF_LINE_OPCODE_BASE + line_delta); | |
c5cec899 | 6033 | if (flag_debug_asm) |
71dfc51f | 6034 | fprintf (asm_out_file, |
2d8b0f3a | 6035 | "\t%s line %ld", ASM_COMMENT_START, current_line); |
71dfc51f | 6036 | |
e90b62db JM |
6037 | fputc ('\n', asm_out_file); |
6038 | } | |
6039 | else | |
6040 | { | |
6041 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
c5cec899 | 6042 | if (flag_debug_asm) |
2d8b0f3a | 6043 | fprintf (asm_out_file, "\t%s advance to line %ld", |
71dfc51f RK |
6044 | ASM_COMMENT_START, current_line); |
6045 | ||
e90b62db JM |
6046 | fputc ('\n', asm_out_file); |
6047 | output_sleb128 (line_offset); | |
6048 | fputc ('\n', asm_out_file); | |
6049 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
6050 | fputc ('\n', asm_out_file); | |
6051 | } | |
6052 | } | |
71dfc51f | 6053 | |
e90b62db | 6054 | ++lt_index; |
e90b62db JM |
6055 | |
6056 | /* If we're done with a function, end its sequence. */ | |
6057 | if (lt_index == separate_line_info_table_in_use | |
6058 | || separate_line_info_table[lt_index].function != function) | |
6059 | { | |
6060 | current_file = 1; | |
6061 | current_line = 1; | |
71dfc51f | 6062 | |
f19a6894 | 6063 | /* Emit debug info for the address of the end of the function. */ |
5c90448c | 6064 | ASM_GENERATE_INTERNAL_LABEL (line_label, FUNC_END_LABEL, function); |
f19a6894 JW |
6065 | if (0) |
6066 | { | |
6067 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
c5cec899 | 6068 | if (flag_debug_asm) |
f19a6894 JW |
6069 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
6070 | ASM_COMMENT_START); | |
6071 | ||
6072 | fputc ('\n', asm_out_file); | |
6073 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, | |
6074 | prev_line_label); | |
6075 | fputc ('\n', asm_out_file); | |
6076 | } | |
6077 | else | |
6078 | { | |
6079 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 6080 | if (flag_debug_asm) |
f19a6894 JW |
6081 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", |
6082 | ASM_COMMENT_START); | |
6083 | fputc ('\n', asm_out_file); | |
6084 | output_uleb128 (1 + PTR_SIZE); | |
6085 | fputc ('\n', asm_out_file); | |
6086 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
6087 | fputc ('\n', asm_out_file); | |
6088 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
6089 | fputc ('\n', asm_out_file); | |
6090 | } | |
e90b62db JM |
6091 | |
6092 | /* Output the marker for the end of this sequence. */ | |
6093 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
c5cec899 | 6094 | if (flag_debug_asm) |
e90b62db JM |
6095 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", |
6096 | ASM_COMMENT_START); | |
71dfc51f | 6097 | |
e90b62db JM |
6098 | fputc ('\n', asm_out_file); |
6099 | output_uleb128 (1); | |
6100 | fputc ('\n', asm_out_file); | |
6101 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
6102 | fputc ('\n', asm_out_file); | |
6103 | } | |
6104 | } | |
a3f97cbb JW |
6105 | } |
6106 | \f | |
71dfc51f RK |
6107 | /* Given a pointer to a BLOCK node return non-zero if (and only if) the node |
6108 | in question represents the outermost pair of curly braces (i.e. the "body | |
6109 | block") of a function or method. | |
6110 | ||
6111 | For any BLOCK node representing a "body block" of a function or method, the | |
6112 | BLOCK_SUPERCONTEXT of the node will point to another BLOCK node which | |
6113 | represents the outermost (function) scope for the function or method (i.e. | |
6114 | the one which includes the formal parameters). The BLOCK_SUPERCONTEXT of | |
6115 | *that* node in turn will point to the relevant FUNCTION_DECL node. */ | |
6116 | ||
6117 | static inline int | |
a3f97cbb JW |
6118 | is_body_block (stmt) |
6119 | register tree stmt; | |
6120 | { | |
6121 | if (TREE_CODE (stmt) == BLOCK) | |
6122 | { | |
6123 | register tree parent = BLOCK_SUPERCONTEXT (stmt); | |
6124 | ||
6125 | if (TREE_CODE (parent) == BLOCK) | |
6126 | { | |
6127 | register tree grandparent = BLOCK_SUPERCONTEXT (parent); | |
6128 | ||
6129 | if (TREE_CODE (grandparent) == FUNCTION_DECL) | |
6130 | return 1; | |
6131 | } | |
6132 | } | |
71dfc51f | 6133 | |
a3f97cbb JW |
6134 | return 0; |
6135 | } | |
6136 | ||
a3f97cbb JW |
6137 | /* Given a pointer to a tree node for some base type, return a pointer to |
6138 | a DIE that describes the given type. | |
6139 | ||
6140 | This routine must only be called for GCC type nodes that correspond to | |
6141 | Dwarf base (fundamental) types. */ | |
71dfc51f | 6142 | |
a3f97cbb JW |
6143 | static dw_die_ref |
6144 | base_type_die (type) | |
6145 | register tree type; | |
6146 | { | |
a9d38797 JM |
6147 | register dw_die_ref base_type_result; |
6148 | register char *type_name; | |
6149 | register enum dwarf_type encoding; | |
71dfc51f | 6150 | register tree name = TYPE_NAME (type); |
a3f97cbb | 6151 | |
a9d38797 JM |
6152 | if (TREE_CODE (type) == ERROR_MARK |
6153 | || TREE_CODE (type) == VOID_TYPE) | |
a3f97cbb JW |
6154 | return 0; |
6155 | ||
71dfc51f RK |
6156 | if (TREE_CODE (name) == TYPE_DECL) |
6157 | name = DECL_NAME (name); | |
6158 | type_name = IDENTIFIER_POINTER (name); | |
a9d38797 | 6159 | |
a3f97cbb JW |
6160 | switch (TREE_CODE (type)) |
6161 | { | |
a3f97cbb | 6162 | case INTEGER_TYPE: |
a9d38797 | 6163 | /* Carefully distinguish the C character types, without messing |
a3f97cbb JW |
6164 | up if the language is not C. Note that we check only for the names |
6165 | that contain spaces; other names might occur by coincidence in other | |
6166 | languages. */ | |
a9d38797 JM |
6167 | if (! (TYPE_PRECISION (type) == CHAR_TYPE_SIZE |
6168 | && (type == char_type_node | |
6169 | || ! strcmp (type_name, "signed char") | |
6170 | || ! strcmp (type_name, "unsigned char")))) | |
a3f97cbb | 6171 | { |
a9d38797 JM |
6172 | if (TREE_UNSIGNED (type)) |
6173 | encoding = DW_ATE_unsigned; | |
6174 | else | |
6175 | encoding = DW_ATE_signed; | |
6176 | break; | |
a3f97cbb | 6177 | } |
a9d38797 | 6178 | /* else fall through */ |
a3f97cbb | 6179 | |
a9d38797 JM |
6180 | case CHAR_TYPE: |
6181 | /* GNU Pascal/Ada CHAR type. Not used in C. */ | |
6182 | if (TREE_UNSIGNED (type)) | |
6183 | encoding = DW_ATE_unsigned_char; | |
6184 | else | |
6185 | encoding = DW_ATE_signed_char; | |
a3f97cbb JW |
6186 | break; |
6187 | ||
6188 | case REAL_TYPE: | |
a9d38797 | 6189 | encoding = DW_ATE_float; |
a3f97cbb JW |
6190 | break; |
6191 | ||
6192 | case COMPLEX_TYPE: | |
a9d38797 | 6193 | encoding = DW_ATE_complex_float; |
a3f97cbb JW |
6194 | break; |
6195 | ||
6196 | case BOOLEAN_TYPE: | |
a9d38797 JM |
6197 | /* GNU FORTRAN/Ada/C++ BOOLEAN type. */ |
6198 | encoding = DW_ATE_boolean; | |
a3f97cbb JW |
6199 | break; |
6200 | ||
6201 | default: | |
a9d38797 | 6202 | abort (); /* No other TREE_CODEs are Dwarf fundamental types. */ |
a3f97cbb JW |
6203 | } |
6204 | ||
a9d38797 JM |
6205 | base_type_result = new_die (DW_TAG_base_type, comp_unit_die); |
6206 | add_AT_string (base_type_result, DW_AT_name, type_name); | |
6207 | add_AT_unsigned (base_type_result, DW_AT_byte_size, | |
4e5a8d7b | 6208 | int_size_in_bytes (type)); |
a9d38797 | 6209 | add_AT_unsigned (base_type_result, DW_AT_encoding, encoding); |
a3f97cbb JW |
6210 | |
6211 | return base_type_result; | |
6212 | } | |
6213 | ||
6214 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a pointer to | |
6215 | the Dwarf "root" type for the given input type. The Dwarf "root" type of | |
6216 | a given type is generally the same as the given type, except that if the | |
6217 | given type is a pointer or reference type, then the root type of the given | |
6218 | type is the root type of the "basis" type for the pointer or reference | |
6219 | type. (This definition of the "root" type is recursive.) Also, the root | |
6220 | type of a `const' qualified type or a `volatile' qualified type is the | |
6221 | root type of the given type without the qualifiers. */ | |
71dfc51f | 6222 | |
a3f97cbb JW |
6223 | static tree |
6224 | root_type (type) | |
6225 | register tree type; | |
6226 | { | |
6227 | if (TREE_CODE (type) == ERROR_MARK) | |
6228 | return error_mark_node; | |
6229 | ||
6230 | switch (TREE_CODE (type)) | |
6231 | { | |
6232 | case ERROR_MARK: | |
6233 | return error_mark_node; | |
6234 | ||
6235 | case POINTER_TYPE: | |
6236 | case REFERENCE_TYPE: | |
6237 | return type_main_variant (root_type (TREE_TYPE (type))); | |
6238 | ||
6239 | default: | |
6240 | return type_main_variant (type); | |
6241 | } | |
6242 | } | |
6243 | ||
6244 | /* Given a pointer to an arbitrary ..._TYPE tree node, return non-zero if the | |
6245 | given input type is a Dwarf "fundamental" type. Otherwise return null. */ | |
71dfc51f RK |
6246 | |
6247 | static inline int | |
a3f97cbb JW |
6248 | is_base_type (type) |
6249 | register tree type; | |
6250 | { | |
6251 | switch (TREE_CODE (type)) | |
6252 | { | |
6253 | case ERROR_MARK: | |
6254 | case VOID_TYPE: | |
6255 | case INTEGER_TYPE: | |
6256 | case REAL_TYPE: | |
6257 | case COMPLEX_TYPE: | |
6258 | case BOOLEAN_TYPE: | |
6259 | case CHAR_TYPE: | |
6260 | return 1; | |
6261 | ||
6262 | case SET_TYPE: | |
6263 | case ARRAY_TYPE: | |
6264 | case RECORD_TYPE: | |
6265 | case UNION_TYPE: | |
6266 | case QUAL_UNION_TYPE: | |
6267 | case ENUMERAL_TYPE: | |
6268 | case FUNCTION_TYPE: | |
6269 | case METHOD_TYPE: | |
6270 | case POINTER_TYPE: | |
6271 | case REFERENCE_TYPE: | |
6272 | case FILE_TYPE: | |
6273 | case OFFSET_TYPE: | |
6274 | case LANG_TYPE: | |
6275 | return 0; | |
6276 | ||
6277 | default: | |
6278 | abort (); | |
6279 | } | |
71dfc51f | 6280 | |
a3f97cbb JW |
6281 | return 0; |
6282 | } | |
6283 | ||
6284 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a debugging | |
6285 | entry that chains various modifiers in front of the given type. */ | |
71dfc51f | 6286 | |
a3f97cbb JW |
6287 | static dw_die_ref |
6288 | modified_type_die (type, is_const_type, is_volatile_type, context_die) | |
6289 | register tree type; | |
6290 | register int is_const_type; | |
6291 | register int is_volatile_type; | |
6292 | register dw_die_ref context_die; | |
6293 | { | |
6294 | register enum tree_code code = TREE_CODE (type); | |
6295 | register dw_die_ref mod_type_die = NULL; | |
6296 | register dw_die_ref sub_die = NULL; | |
dfcf9891 | 6297 | register tree item_type = NULL; |
a3f97cbb JW |
6298 | |
6299 | if (code != ERROR_MARK) | |
6300 | { | |
a94dbf2c | 6301 | type = build_type_variant (type, is_const_type, is_volatile_type); |
bdb669cb JM |
6302 | |
6303 | mod_type_die = lookup_type_die (type); | |
6304 | if (mod_type_die) | |
6305 | return mod_type_die; | |
6306 | ||
a94dbf2c JM |
6307 | /* Handle C typedef types. */ |
6308 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
6309 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
6310 | { | |
6311 | tree dtype = TREE_TYPE (TYPE_NAME (type)); | |
6312 | if (type == dtype) | |
6313 | { | |
6314 | /* For a named type, use the typedef. */ | |
6315 | gen_type_die (type, context_die); | |
6316 | mod_type_die = lookup_type_die (type); | |
6317 | } | |
71dfc51f | 6318 | |
a94dbf2c JM |
6319 | else if (is_const_type < TYPE_READONLY (dtype) |
6320 | || is_volatile_type < TYPE_VOLATILE (dtype)) | |
6321 | /* cv-unqualified version of named type. Just use the unnamed | |
6322 | type to which it refers. */ | |
71dfc51f RK |
6323 | mod_type_die |
6324 | = modified_type_die (DECL_ORIGINAL_TYPE (TYPE_NAME (type)), | |
6325 | is_const_type, is_volatile_type, | |
6326 | context_die); | |
6327 | /* Else cv-qualified version of named type; fall through. */ | |
a94dbf2c JM |
6328 | } |
6329 | ||
6330 | if (mod_type_die) | |
6331 | /* OK */; | |
6332 | else if (is_const_type) | |
a3f97cbb | 6333 | { |
ab72d377 | 6334 | mod_type_die = new_die (DW_TAG_const_type, comp_unit_die); |
a9d38797 | 6335 | sub_die = modified_type_die (type, 0, is_volatile_type, context_die); |
a3f97cbb JW |
6336 | } |
6337 | else if (is_volatile_type) | |
6338 | { | |
ab72d377 | 6339 | mod_type_die = new_die (DW_TAG_volatile_type, comp_unit_die); |
a9d38797 | 6340 | sub_die = modified_type_die (type, 0, 0, context_die); |
a3f97cbb JW |
6341 | } |
6342 | else if (code == POINTER_TYPE) | |
6343 | { | |
ab72d377 | 6344 | mod_type_die = new_die (DW_TAG_pointer_type, comp_unit_die); |
a3f97cbb | 6345 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 6346 | #if 0 |
a3f97cbb | 6347 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 6348 | #endif |
a3f97cbb | 6349 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
6350 | } |
6351 | else if (code == REFERENCE_TYPE) | |
6352 | { | |
ab72d377 | 6353 | mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die); |
a3f97cbb | 6354 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
61b32c02 | 6355 | #if 0 |
a3f97cbb | 6356 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
61b32c02 | 6357 | #endif |
a3f97cbb | 6358 | item_type = TREE_TYPE (type); |
a3f97cbb JW |
6359 | } |
6360 | else if (is_base_type (type)) | |
71dfc51f | 6361 | mod_type_die = base_type_die (type); |
a3f97cbb JW |
6362 | else |
6363 | { | |
4b674448 JM |
6364 | gen_type_die (type, context_die); |
6365 | ||
a3f97cbb JW |
6366 | /* We have to get the type_main_variant here (and pass that to the |
6367 | `lookup_type_die' routine) because the ..._TYPE node we have | |
6368 | might simply be a *copy* of some original type node (where the | |
6369 | copy was created to help us keep track of typedef names) and | |
6370 | that copy might have a different TYPE_UID from the original | |
a94dbf2c | 6371 | ..._TYPE node. */ |
a3f97cbb | 6372 | mod_type_die = lookup_type_die (type_main_variant (type)); |
3a88cbd1 JL |
6373 | if (mod_type_die == NULL) |
6374 | abort (); | |
a3f97cbb JW |
6375 | } |
6376 | } | |
71dfc51f | 6377 | |
dfcf9891 JW |
6378 | equate_type_number_to_die (type, mod_type_die); |
6379 | if (item_type) | |
71dfc51f RK |
6380 | /* We must do this after the equate_type_number_to_die call, in case |
6381 | this is a recursive type. This ensures that the modified_type_die | |
6382 | recursion will terminate even if the type is recursive. Recursive | |
6383 | types are possible in Ada. */ | |
6384 | sub_die = modified_type_die (item_type, | |
6385 | TYPE_READONLY (item_type), | |
6386 | TYPE_VOLATILE (item_type), | |
6387 | context_die); | |
6388 | ||
a3f97cbb | 6389 | if (sub_die != NULL) |
71dfc51f RK |
6390 | add_AT_die_ref (mod_type_die, DW_AT_type, sub_die); |
6391 | ||
a3f97cbb JW |
6392 | return mod_type_die; |
6393 | } | |
6394 | ||
a3f97cbb JW |
6395 | /* Given a pointer to an arbitrary ..._TYPE tree node, return true if it is |
6396 | an enumerated type. */ | |
71dfc51f RK |
6397 | |
6398 | static inline int | |
a3f97cbb JW |
6399 | type_is_enum (type) |
6400 | register tree type; | |
6401 | { | |
6402 | return TREE_CODE (type) == ENUMERAL_TYPE; | |
6403 | } | |
6404 | ||
a3f97cbb | 6405 | /* Return a location descriptor that designates a machine register. */ |
71dfc51f | 6406 | |
a3f97cbb JW |
6407 | static dw_loc_descr_ref |
6408 | reg_loc_descriptor (rtl) | |
6409 | register rtx rtl; | |
6410 | { | |
6411 | register dw_loc_descr_ref loc_result = NULL; | |
6412 | register unsigned reg = reg_number (rtl); | |
71dfc51f | 6413 | |
85066503 | 6414 | if (reg <= 31) |
71dfc51f | 6415 | loc_result = new_loc_descr (DW_OP_reg0 + reg, 0, 0); |
a3f97cbb | 6416 | else |
71dfc51f RK |
6417 | loc_result = new_loc_descr (DW_OP_regx, reg, 0); |
6418 | ||
a3f97cbb JW |
6419 | return loc_result; |
6420 | } | |
6421 | ||
6422 | /* Return a location descriptor that designates a base+offset location. */ | |
71dfc51f | 6423 | |
a3f97cbb JW |
6424 | static dw_loc_descr_ref |
6425 | based_loc_descr (reg, offset) | |
6426 | unsigned reg; | |
6427 | long int offset; | |
6428 | { | |
6429 | register dw_loc_descr_ref loc_result; | |
810429b7 JM |
6430 | /* For the "frame base", we use the frame pointer or stack pointer |
6431 | registers, since the RTL for local variables is relative to one of | |
6432 | them. */ | |
6433 | register unsigned fp_reg = DBX_REGISTER_NUMBER (frame_pointer_needed | |
b1ccbc24 | 6434 | ? HARD_FRAME_POINTER_REGNUM |
810429b7 | 6435 | : STACK_POINTER_REGNUM); |
71dfc51f | 6436 | |
a3f97cbb | 6437 | if (reg == fp_reg) |
71dfc51f | 6438 | loc_result = new_loc_descr (DW_OP_fbreg, offset, 0); |
85066503 | 6439 | else if (reg <= 31) |
71dfc51f | 6440 | loc_result = new_loc_descr (DW_OP_breg0 + reg, offset, 0); |
a3f97cbb | 6441 | else |
71dfc51f RK |
6442 | loc_result = new_loc_descr (DW_OP_bregx, reg, offset); |
6443 | ||
a3f97cbb JW |
6444 | return loc_result; |
6445 | } | |
6446 | ||
6447 | /* Return true if this RTL expression describes a base+offset calculation. */ | |
71dfc51f RK |
6448 | |
6449 | static inline int | |
a3f97cbb JW |
6450 | is_based_loc (rtl) |
6451 | register rtx rtl; | |
6452 | { | |
71dfc51f RK |
6453 | return (GET_CODE (rtl) == PLUS |
6454 | && ((GET_CODE (XEXP (rtl, 0)) == REG | |
6455 | && GET_CODE (XEXP (rtl, 1)) == CONST_INT))); | |
a3f97cbb JW |
6456 | } |
6457 | ||
6458 | /* The following routine converts the RTL for a variable or parameter | |
6459 | (resident in memory) into an equivalent Dwarf representation of a | |
6460 | mechanism for getting the address of that same variable onto the top of a | |
6461 | hypothetical "address evaluation" stack. | |
71dfc51f | 6462 | |
a3f97cbb JW |
6463 | When creating memory location descriptors, we are effectively transforming |
6464 | the RTL for a memory-resident object into its Dwarf postfix expression | |
6465 | equivalent. This routine recursively descends an RTL tree, turning | |
6466 | it into Dwarf postfix code as it goes. */ | |
71dfc51f | 6467 | |
a3f97cbb JW |
6468 | static dw_loc_descr_ref |
6469 | mem_loc_descriptor (rtl) | |
6470 | register rtx rtl; | |
6471 | { | |
6472 | dw_loc_descr_ref mem_loc_result = NULL; | |
6473 | /* Note that for a dynamically sized array, the location we will generate a | |
6474 | description of here will be the lowest numbered location which is | |
6475 | actually within the array. That's *not* necessarily the same as the | |
6476 | zeroth element of the array. */ | |
71dfc51f | 6477 | |
a3f97cbb JW |
6478 | switch (GET_CODE (rtl)) |
6479 | { | |
6480 | case SUBREG: | |
6481 | /* The case of a subreg may arise when we have a local (register) | |
6482 | variable or a formal (register) parameter which doesn't quite fill | |
6483 | up an entire register. For now, just assume that it is | |
6484 | legitimate to make the Dwarf info refer to the whole register which | |
6485 | contains the given subreg. */ | |
6486 | rtl = XEXP (rtl, 0); | |
71dfc51f RK |
6487 | |
6488 | /* ... fall through ... */ | |
a3f97cbb JW |
6489 | |
6490 | case REG: | |
6491 | /* Whenever a register number forms a part of the description of the | |
6492 | method for calculating the (dynamic) address of a memory resident | |
6493 | object, DWARF rules require the register number be referred to as | |
6494 | a "base register". This distinction is not based in any way upon | |
6495 | what category of register the hardware believes the given register | |
6496 | belongs to. This is strictly DWARF terminology we're dealing with | |
6497 | here. Note that in cases where the location of a memory-resident | |
6498 | data object could be expressed as: OP_ADD (OP_BASEREG (basereg), | |
6499 | OP_CONST (0)) the actual DWARF location descriptor that we generate | |
6500 | may just be OP_BASEREG (basereg). This may look deceptively like | |
6501 | the object in question was allocated to a register (rather than in | |
6502 | memory) so DWARF consumers need to be aware of the subtle | |
6503 | distinction between OP_REG and OP_BASEREG. */ | |
6504 | mem_loc_result = based_loc_descr (reg_number (rtl), 0); | |
6505 | break; | |
6506 | ||
6507 | case MEM: | |
6508 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0)); | |
6509 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_deref, 0, 0)); | |
6510 | break; | |
6511 | ||
6512 | case CONST: | |
6513 | case SYMBOL_REF: | |
6514 | mem_loc_result = new_loc_descr (DW_OP_addr, 0, 0); | |
6515 | mem_loc_result->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
6516 | mem_loc_result->dw_loc_oprnd1.v.val_addr = addr_to_string (rtl); | |
6517 | break; | |
6518 | ||
6519 | case PLUS: | |
6520 | if (is_based_loc (rtl)) | |
71dfc51f RK |
6521 | mem_loc_result = based_loc_descr (reg_number (XEXP (rtl, 0)), |
6522 | INTVAL (XEXP (rtl, 1))); | |
a3f97cbb JW |
6523 | else |
6524 | { | |
6525 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0))); | |
6526 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1))); | |
6527 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_plus, 0, 0)); | |
6528 | } | |
6529 | break; | |
6530 | ||
dd2478ae JW |
6531 | case MULT: |
6532 | /* If a pseudo-reg is optimized away, it is possible for it to | |
6533 | be replaced with a MEM containing a multiply. */ | |
6534 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0))); | |
6535 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1))); | |
6536 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_mul, 0, 0)); | |
6537 | break; | |
6538 | ||
a3f97cbb JW |
6539 | case CONST_INT: |
6540 | mem_loc_result = new_loc_descr (DW_OP_constu, INTVAL (rtl), 0); | |
6541 | break; | |
6542 | ||
6543 | default: | |
6544 | abort (); | |
6545 | } | |
71dfc51f | 6546 | |
a3f97cbb JW |
6547 | return mem_loc_result; |
6548 | } | |
6549 | ||
956d6950 | 6550 | /* Return a descriptor that describes the concatenation of two locations. |
4401bf24 JL |
6551 | This is typically a complex variable. */ |
6552 | ||
6553 | static dw_loc_descr_ref | |
6554 | concat_loc_descriptor (x0, x1) | |
6555 | register rtx x0, x1; | |
6556 | { | |
6557 | dw_loc_descr_ref cc_loc_result = NULL; | |
6558 | ||
6559 | if (!is_pseudo_reg (x0) | |
6560 | && (GET_CODE (x0) != MEM || !is_pseudo_reg (XEXP (x0, 0)))) | |
6561 | add_loc_descr (&cc_loc_result, loc_descriptor (x0)); | |
6562 | add_loc_descr (&cc_loc_result, | |
6563 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x0)), 0)); | |
6564 | ||
6565 | if (!is_pseudo_reg (x1) | |
6566 | && (GET_CODE (x1) != MEM || !is_pseudo_reg (XEXP (x1, 0)))) | |
6567 | add_loc_descr (&cc_loc_result, loc_descriptor (x1)); | |
6568 | add_loc_descr (&cc_loc_result, | |
6569 | new_loc_descr (DW_OP_piece, GET_MODE_SIZE (GET_MODE (x1)), 0)); | |
6570 | ||
6571 | return cc_loc_result; | |
6572 | } | |
6573 | ||
a3f97cbb JW |
6574 | /* Output a proper Dwarf location descriptor for a variable or parameter |
6575 | which is either allocated in a register or in a memory location. For a | |
6576 | register, we just generate an OP_REG and the register number. For a | |
6577 | memory location we provide a Dwarf postfix expression describing how to | |
6578 | generate the (dynamic) address of the object onto the address stack. */ | |
71dfc51f | 6579 | |
a3f97cbb JW |
6580 | static dw_loc_descr_ref |
6581 | loc_descriptor (rtl) | |
6582 | register rtx rtl; | |
6583 | { | |
6584 | dw_loc_descr_ref loc_result = NULL; | |
6585 | switch (GET_CODE (rtl)) | |
6586 | { | |
6587 | case SUBREG: | |
a3f97cbb JW |
6588 | /* The case of a subreg may arise when we have a local (register) |
6589 | variable or a formal (register) parameter which doesn't quite fill | |
71dfc51f | 6590 | up an entire register. For now, just assume that it is |
a3f97cbb JW |
6591 | legitimate to make the Dwarf info refer to the whole register which |
6592 | contains the given subreg. */ | |
a3f97cbb | 6593 | rtl = XEXP (rtl, 0); |
71dfc51f RK |
6594 | |
6595 | /* ... fall through ... */ | |
a3f97cbb JW |
6596 | |
6597 | case REG: | |
5c90448c | 6598 | loc_result = reg_loc_descriptor (rtl); |
a3f97cbb JW |
6599 | break; |
6600 | ||
6601 | case MEM: | |
6602 | loc_result = mem_loc_descriptor (XEXP (rtl, 0)); | |
6603 | break; | |
6604 | ||
4401bf24 JL |
6605 | case CONCAT: |
6606 | loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1)); | |
6607 | break; | |
6608 | ||
a3f97cbb | 6609 | default: |
71dfc51f | 6610 | abort (); |
a3f97cbb | 6611 | } |
71dfc51f | 6612 | |
a3f97cbb JW |
6613 | return loc_result; |
6614 | } | |
6615 | ||
6616 | /* Given an unsigned value, round it up to the lowest multiple of `boundary' | |
6617 | which is not less than the value itself. */ | |
71dfc51f RK |
6618 | |
6619 | static inline unsigned | |
a3f97cbb JW |
6620 | ceiling (value, boundary) |
6621 | register unsigned value; | |
6622 | register unsigned boundary; | |
6623 | { | |
6624 | return (((value + boundary - 1) / boundary) * boundary); | |
6625 | } | |
6626 | ||
6627 | /* Given a pointer to what is assumed to be a FIELD_DECL node, return a | |
6628 | pointer to the declared type for the relevant field variable, or return | |
6629 | `integer_type_node' if the given node turns out to be an | |
6630 | ERROR_MARK node. */ | |
71dfc51f RK |
6631 | |
6632 | static inline tree | |
a3f97cbb JW |
6633 | field_type (decl) |
6634 | register tree decl; | |
6635 | { | |
6636 | register tree type; | |
6637 | ||
6638 | if (TREE_CODE (decl) == ERROR_MARK) | |
6639 | return integer_type_node; | |
6640 | ||
6641 | type = DECL_BIT_FIELD_TYPE (decl); | |
71dfc51f | 6642 | if (type == NULL_TREE) |
a3f97cbb JW |
6643 | type = TREE_TYPE (decl); |
6644 | ||
6645 | return type; | |
6646 | } | |
6647 | ||
6648 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
6649 | node, return the alignment in bits for the type, or else return | |
6650 | BITS_PER_WORD if the node actually turns out to be an | |
6651 | ERROR_MARK node. */ | |
71dfc51f RK |
6652 | |
6653 | static inline unsigned | |
a3f97cbb JW |
6654 | simple_type_align_in_bits (type) |
6655 | register tree type; | |
6656 | { | |
6657 | return (TREE_CODE (type) != ERROR_MARK) ? TYPE_ALIGN (type) : BITS_PER_WORD; | |
6658 | } | |
6659 | ||
6660 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
6661 | node, return the size in bits for the type if it is a constant, or else | |
6662 | return the alignment for the type if the type's size is not constant, or | |
6663 | else return BITS_PER_WORD if the type actually turns out to be an | |
6664 | ERROR_MARK node. */ | |
71dfc51f RK |
6665 | |
6666 | static inline unsigned | |
a3f97cbb JW |
6667 | simple_type_size_in_bits (type) |
6668 | register tree type; | |
6669 | { | |
6670 | if (TREE_CODE (type) == ERROR_MARK) | |
6671 | return BITS_PER_WORD; | |
6672 | else | |
6673 | { | |
6674 | register tree type_size_tree = TYPE_SIZE (type); | |
6675 | ||
6676 | if (TREE_CODE (type_size_tree) != INTEGER_CST) | |
6677 | return TYPE_ALIGN (type); | |
6678 | ||
6679 | return (unsigned) TREE_INT_CST_LOW (type_size_tree); | |
6680 | } | |
6681 | } | |
6682 | ||
6683 | /* Given a pointer to what is assumed to be a FIELD_DECL node, compute and | |
6684 | return the byte offset of the lowest addressed byte of the "containing | |
6685 | object" for the given FIELD_DECL, or return 0 if we are unable to | |
6686 | determine what that offset is, either because the argument turns out to | |
6687 | be a pointer to an ERROR_MARK node, or because the offset is actually | |
6688 | variable. (We can't handle the latter case just yet). */ | |
71dfc51f | 6689 | |
a3f97cbb JW |
6690 | static unsigned |
6691 | field_byte_offset (decl) | |
6692 | register tree decl; | |
6693 | { | |
6694 | register unsigned type_align_in_bytes; | |
6695 | register unsigned type_align_in_bits; | |
6696 | register unsigned type_size_in_bits; | |
6697 | register unsigned object_offset_in_align_units; | |
6698 | register unsigned object_offset_in_bits; | |
6699 | register unsigned object_offset_in_bytes; | |
6700 | register tree type; | |
6701 | register tree bitpos_tree; | |
6702 | register tree field_size_tree; | |
6703 | register unsigned bitpos_int; | |
6704 | register unsigned deepest_bitpos; | |
6705 | register unsigned field_size_in_bits; | |
6706 | ||
6707 | if (TREE_CODE (decl) == ERROR_MARK) | |
6708 | return 0; | |
6709 | ||
6710 | if (TREE_CODE (decl) != FIELD_DECL) | |
6711 | abort (); | |
6712 | ||
6713 | type = field_type (decl); | |
6714 | ||
6715 | bitpos_tree = DECL_FIELD_BITPOS (decl); | |
6716 | field_size_tree = DECL_SIZE (decl); | |
6717 | ||
6718 | /* We cannot yet cope with fields whose positions or sizes are variable, so | |
6719 | for now, when we see such things, we simply return 0. Someday, we may | |
6720 | be able to handle such cases, but it will be damn difficult. */ | |
6721 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
6722 | return 0; | |
6723 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); | |
6724 | ||
6725 | if (TREE_CODE (field_size_tree) != INTEGER_CST) | |
6726 | return 0; | |
a3f97cbb | 6727 | |
71dfc51f | 6728 | field_size_in_bits = (unsigned) TREE_INT_CST_LOW (field_size_tree); |
a3f97cbb | 6729 | type_size_in_bits = simple_type_size_in_bits (type); |
a3f97cbb JW |
6730 | type_align_in_bits = simple_type_align_in_bits (type); |
6731 | type_align_in_bytes = type_align_in_bits / BITS_PER_UNIT; | |
6732 | ||
6733 | /* Note that the GCC front-end doesn't make any attempt to keep track of | |
6734 | the starting bit offset (relative to the start of the containing | |
6735 | structure type) of the hypothetical "containing object" for a bit- | |
6736 | field. Thus, when computing the byte offset value for the start of the | |
6737 | "containing object" of a bit-field, we must deduce this information on | |
6738 | our own. This can be rather tricky to do in some cases. For example, | |
6739 | handling the following structure type definition when compiling for an | |
6740 | i386/i486 target (which only aligns long long's to 32-bit boundaries) | |
6741 | can be very tricky: | |
6742 | ||
6743 | struct S { int field1; long long field2:31; }; | |
6744 | ||
6745 | Fortunately, there is a simple rule-of-thumb which can be | |
6746 | used in such cases. When compiling for an i386/i486, GCC will allocate | |
6747 | 8 bytes for the structure shown above. It decides to do this based upon | |
6748 | one simple rule for bit-field allocation. Quite simply, GCC allocates | |
6749 | each "containing object" for each bit-field at the first (i.e. lowest | |
6750 | addressed) legitimate alignment boundary (based upon the required | |
6751 | minimum alignment for the declared type of the field) which it can | |
6752 | possibly use, subject to the condition that there is still enough | |
6753 | available space remaining in the containing object (when allocated at | |
6754 | the selected point) to fully accommodate all of the bits of the | |
6755 | bit-field itself. This simple rule makes it obvious why GCC allocates | |
6756 | 8 bytes for each object of the structure type shown above. When looking | |
6757 | for a place to allocate the "containing object" for `field2', the | |
6758 | compiler simply tries to allocate a 64-bit "containing object" at each | |
6759 | successive 32-bit boundary (starting at zero) until it finds a place to | |
6760 | allocate that 64- bit field such that at least 31 contiguous (and | |
6761 | previously unallocated) bits remain within that selected 64 bit field. | |
6762 | (As it turns out, for the example above, the compiler finds that it is | |
6763 | OK to allocate the "containing object" 64-bit field at bit-offset zero | |
6764 | within the structure type.) Here we attempt to work backwards from the | |
6765 | limited set of facts we're given, and we try to deduce from those facts, | |
6766 | where GCC must have believed that the containing object started (within | |
6767 | the structure type). The value we deduce is then used (by the callers of | |
6768 | this routine) to generate DW_AT_location and DW_AT_bit_offset attributes | |
6769 | for fields (both bit-fields and, in the case of DW_AT_location, regular | |
6770 | fields as well). */ | |
6771 | ||
6772 | /* Figure out the bit-distance from the start of the structure to the | |
6773 | "deepest" bit of the bit-field. */ | |
6774 | deepest_bitpos = bitpos_int + field_size_in_bits; | |
6775 | ||
6776 | /* This is the tricky part. Use some fancy footwork to deduce where the | |
6777 | lowest addressed bit of the containing object must be. */ | |
6778 | object_offset_in_bits | |
6779 | = ceiling (deepest_bitpos, type_align_in_bits) - type_size_in_bits; | |
6780 | ||
6781 | /* Compute the offset of the containing object in "alignment units". */ | |
6782 | object_offset_in_align_units = object_offset_in_bits / type_align_in_bits; | |
6783 | ||
6784 | /* Compute the offset of the containing object in bytes. */ | |
6785 | object_offset_in_bytes = object_offset_in_align_units * type_align_in_bytes; | |
6786 | ||
6787 | return object_offset_in_bytes; | |
6788 | } | |
a3f97cbb | 6789 | \f |
71dfc51f RK |
6790 | /* The following routines define various Dwarf attributes and any data |
6791 | associated with them. */ | |
a3f97cbb | 6792 | |
ef76d03b | 6793 | /* Add a location description attribute value to a DIE. |
a3f97cbb | 6794 | |
ef76d03b | 6795 | This emits location attributes suitable for whole variables and |
a3f97cbb JW |
6796 | whole parameters. Note that the location attributes for struct fields are |
6797 | generated by the routine `data_member_location_attribute' below. */ | |
71dfc51f | 6798 | |
a3f97cbb | 6799 | static void |
ef76d03b | 6800 | add_AT_location_description (die, attr_kind, rtl) |
a3f97cbb | 6801 | dw_die_ref die; |
ef76d03b | 6802 | enum dwarf_attribute attr_kind; |
a3f97cbb JW |
6803 | register rtx rtl; |
6804 | { | |
a3f97cbb JW |
6805 | /* Handle a special case. If we are about to output a location descriptor |
6806 | for a variable or parameter which has been optimized out of existence, | |
6a7a9f01 | 6807 | don't do that. A variable which has been optimized out |
a3f97cbb JW |
6808 | of existence will have a DECL_RTL value which denotes a pseudo-reg. |
6809 | Currently, in some rare cases, variables can have DECL_RTL values which | |
6810 | look like (MEM (REG pseudo-reg#)). These cases are due to bugs | |
6811 | elsewhere in the compiler. We treat such cases as if the variable(s) in | |
6a7a9f01 | 6812 | question had been optimized out of existence. */ |
a3f97cbb | 6813 | |
6a7a9f01 JM |
6814 | if (is_pseudo_reg (rtl) |
6815 | || (GET_CODE (rtl) == MEM | |
4401bf24 JL |
6816 | && is_pseudo_reg (XEXP (rtl, 0))) |
6817 | || (GET_CODE (rtl) == CONCAT | |
6818 | && is_pseudo_reg (XEXP (rtl, 0)) | |
6819 | && is_pseudo_reg (XEXP (rtl, 1)))) | |
6a7a9f01 | 6820 | return; |
a3f97cbb | 6821 | |
6a7a9f01 | 6822 | add_AT_loc (die, attr_kind, loc_descriptor (rtl)); |
a3f97cbb JW |
6823 | } |
6824 | ||
6825 | /* Attach the specialized form of location attribute used for data | |
6826 | members of struct and union types. In the special case of a | |
6827 | FIELD_DECL node which represents a bit-field, the "offset" part | |
6828 | of this special location descriptor must indicate the distance | |
6829 | in bytes from the lowest-addressed byte of the containing struct | |
6830 | or union type to the lowest-addressed byte of the "containing | |
6831 | object" for the bit-field. (See the `field_byte_offset' function | |
6832 | above).. For any given bit-field, the "containing object" is a | |
6833 | hypothetical object (of some integral or enum type) within which | |
6834 | the given bit-field lives. The type of this hypothetical | |
6835 | "containing object" is always the same as the declared type of | |
6836 | the individual bit-field itself (for GCC anyway... the DWARF | |
6837 | spec doesn't actually mandate this). Note that it is the size | |
6838 | (in bytes) of the hypothetical "containing object" which will | |
6839 | be given in the DW_AT_byte_size attribute for this bit-field. | |
6840 | (See the `byte_size_attribute' function below.) It is also used | |
6841 | when calculating the value of the DW_AT_bit_offset attribute. | |
6842 | (See the `bit_offset_attribute' function below). */ | |
71dfc51f | 6843 | |
a3f97cbb JW |
6844 | static void |
6845 | add_data_member_location_attribute (die, decl) | |
6846 | register dw_die_ref die; | |
6847 | register tree decl; | |
6848 | { | |
61b32c02 | 6849 | register unsigned long offset; |
a3f97cbb JW |
6850 | register dw_loc_descr_ref loc_descr; |
6851 | register enum dwarf_location_atom op; | |
6852 | ||
61b32c02 JM |
6853 | if (TREE_CODE (decl) == TREE_VEC) |
6854 | offset = TREE_INT_CST_LOW (BINFO_OFFSET (decl)); | |
6855 | else | |
6856 | offset = field_byte_offset (decl); | |
6857 | ||
a3f97cbb JW |
6858 | /* The DWARF2 standard says that we should assume that the structure address |
6859 | is already on the stack, so we can specify a structure field address | |
6860 | by using DW_OP_plus_uconst. */ | |
71dfc51f | 6861 | |
a3f97cbb JW |
6862 | #ifdef MIPS_DEBUGGING_INFO |
6863 | /* ??? The SGI dwarf reader does not handle the DW_OP_plus_uconst operator | |
6864 | correctly. It works only if we leave the offset on the stack. */ | |
6865 | op = DW_OP_constu; | |
6866 | #else | |
6867 | op = DW_OP_plus_uconst; | |
6868 | #endif | |
71dfc51f | 6869 | |
a3f97cbb JW |
6870 | loc_descr = new_loc_descr (op, offset, 0); |
6871 | add_AT_loc (die, DW_AT_data_member_location, loc_descr); | |
6872 | } | |
6873 | ||
6874 | /* Attach an DW_AT_const_value attribute for a variable or a parameter which | |
6875 | does not have a "location" either in memory or in a register. These | |
6876 | things can arise in GNU C when a constant is passed as an actual parameter | |
6877 | to an inlined function. They can also arise in C++ where declared | |
6878 | constants do not necessarily get memory "homes". */ | |
71dfc51f | 6879 | |
a3f97cbb JW |
6880 | static void |
6881 | add_const_value_attribute (die, rtl) | |
6882 | register dw_die_ref die; | |
6883 | register rtx rtl; | |
6884 | { | |
6885 | switch (GET_CODE (rtl)) | |
6886 | { | |
6887 | case CONST_INT: | |
6888 | /* Note that a CONST_INT rtx could represent either an integer or a | |
6889 | floating-point constant. A CONST_INT is used whenever the constant | |
6890 | will fit into a single word. In all such cases, the original mode | |
6891 | of the constant value is wiped out, and the CONST_INT rtx is | |
6892 | assigned VOIDmode. */ | |
6893 | add_AT_unsigned (die, DW_AT_const_value, (unsigned) INTVAL (rtl)); | |
6894 | break; | |
6895 | ||
6896 | case CONST_DOUBLE: | |
6897 | /* Note that a CONST_DOUBLE rtx could represent either an integer or a | |
6898 | floating-point constant. A CONST_DOUBLE is used whenever the | |
6899 | constant requires more than one word in order to be adequately | |
469ac993 JM |
6900 | represented. We output CONST_DOUBLEs as blocks. */ |
6901 | { | |
6902 | register enum machine_mode mode = GET_MODE (rtl); | |
6903 | ||
6904 | if (GET_MODE_CLASS (mode) == MODE_FLOAT) | |
6905 | { | |
71dfc51f RK |
6906 | register unsigned length = GET_MODE_SIZE (mode) / sizeof (long); |
6907 | long array[4]; | |
6908 | REAL_VALUE_TYPE rv; | |
469ac993 | 6909 | |
71dfc51f | 6910 | REAL_VALUE_FROM_CONST_DOUBLE (rv, rtl); |
469ac993 JM |
6911 | switch (mode) |
6912 | { | |
6913 | case SFmode: | |
71dfc51f | 6914 | REAL_VALUE_TO_TARGET_SINGLE (rv, array[0]); |
469ac993 JM |
6915 | break; |
6916 | ||
6917 | case DFmode: | |
71dfc51f | 6918 | REAL_VALUE_TO_TARGET_DOUBLE (rv, array); |
469ac993 JM |
6919 | break; |
6920 | ||
6921 | case XFmode: | |
6922 | case TFmode: | |
71dfc51f | 6923 | REAL_VALUE_TO_TARGET_LONG_DOUBLE (rv, array); |
469ac993 JM |
6924 | break; |
6925 | ||
6926 | default: | |
6927 | abort (); | |
6928 | } | |
6929 | ||
469ac993 JM |
6930 | add_AT_float (die, DW_AT_const_value, length, array); |
6931 | } | |
6932 | else | |
6933 | add_AT_long_long (die, DW_AT_const_value, | |
6934 | CONST_DOUBLE_HIGH (rtl), CONST_DOUBLE_LOW (rtl)); | |
6935 | } | |
a3f97cbb JW |
6936 | break; |
6937 | ||
6938 | case CONST_STRING: | |
6939 | add_AT_string (die, DW_AT_const_value, XSTR (rtl, 0)); | |
6940 | break; | |
6941 | ||
6942 | case SYMBOL_REF: | |
6943 | case LABEL_REF: | |
6944 | case CONST: | |
6945 | add_AT_addr (die, DW_AT_const_value, addr_to_string (rtl)); | |
6946 | break; | |
6947 | ||
6948 | case PLUS: | |
6949 | /* In cases where an inlined instance of an inline function is passed | |
6950 | the address of an `auto' variable (which is local to the caller) we | |
6951 | can get a situation where the DECL_RTL of the artificial local | |
6952 | variable (for the inlining) which acts as a stand-in for the | |
6953 | corresponding formal parameter (of the inline function) will look | |
6954 | like (plus:SI (reg:SI FRAME_PTR) (const_int ...)). This is not | |
6955 | exactly a compile-time constant expression, but it isn't the address | |
6956 | of the (artificial) local variable either. Rather, it represents the | |
6957 | *value* which the artificial local variable always has during its | |
6958 | lifetime. We currently have no way to represent such quasi-constant | |
6a7a9f01 | 6959 | values in Dwarf, so for now we just punt and generate nothing. */ |
a3f97cbb JW |
6960 | break; |
6961 | ||
6962 | default: | |
6963 | /* No other kinds of rtx should be possible here. */ | |
6964 | abort (); | |
6965 | } | |
6966 | ||
6967 | } | |
6968 | ||
6969 | /* Generate *either* an DW_AT_location attribute or else an DW_AT_const_value | |
6970 | data attribute for a variable or a parameter. We generate the | |
6971 | DW_AT_const_value attribute only in those cases where the given variable | |
6972 | or parameter does not have a true "location" either in memory or in a | |
6973 | register. This can happen (for example) when a constant is passed as an | |
6974 | actual argument in a call to an inline function. (It's possible that | |
6975 | these things can crop up in other ways also.) Note that one type of | |
6976 | constant value which can be passed into an inlined function is a constant | |
6977 | pointer. This can happen for example if an actual argument in an inlined | |
6978 | function call evaluates to a compile-time constant address. */ | |
71dfc51f | 6979 | |
a3f97cbb JW |
6980 | static void |
6981 | add_location_or_const_value_attribute (die, decl) | |
6982 | register dw_die_ref die; | |
6983 | register tree decl; | |
6984 | { | |
6985 | register rtx rtl; | |
6986 | register tree declared_type; | |
6987 | register tree passed_type; | |
6988 | ||
6989 | if (TREE_CODE (decl) == ERROR_MARK) | |
71dfc51f RK |
6990 | return; |
6991 | ||
6992 | if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL) | |
6993 | abort (); | |
6994 | ||
a3f97cbb JW |
6995 | /* Here we have to decide where we are going to say the parameter "lives" |
6996 | (as far as the debugger is concerned). We only have a couple of | |
6997 | choices. GCC provides us with DECL_RTL and with DECL_INCOMING_RTL. | |
71dfc51f | 6998 | |
a3f97cbb | 6999 | DECL_RTL normally indicates where the parameter lives during most of the |
71dfc51f | 7000 | activation of the function. If optimization is enabled however, this |
a3f97cbb JW |
7001 | could be either NULL or else a pseudo-reg. Both of those cases indicate |
7002 | that the parameter doesn't really live anywhere (as far as the code | |
7003 | generation parts of GCC are concerned) during most of the function's | |
7004 | activation. That will happen (for example) if the parameter is never | |
71dfc51f RK |
7005 | referenced within the function. |
7006 | ||
7007 | We could just generate a location descriptor here for all non-NULL | |
7008 | non-pseudo values of DECL_RTL and ignore all of the rest, but we can be | |
7009 | a little nicer than that if we also consider DECL_INCOMING_RTL in cases | |
7010 | where DECL_RTL is NULL or is a pseudo-reg. | |
7011 | ||
7012 | Note however that we can only get away with using DECL_INCOMING_RTL as | |
7013 | a backup substitute for DECL_RTL in certain limited cases. In cases | |
7014 | where DECL_ARG_TYPE (decl) indicates the same type as TREE_TYPE (decl), | |
7015 | we can be sure that the parameter was passed using the same type as it is | |
7016 | declared to have within the function, and that its DECL_INCOMING_RTL | |
7017 | points us to a place where a value of that type is passed. | |
7018 | ||
7019 | In cases where DECL_ARG_TYPE (decl) and TREE_TYPE (decl) are different, | |
7020 | we cannot (in general) use DECL_INCOMING_RTL as a substitute for DECL_RTL | |
7021 | because in these cases DECL_INCOMING_RTL points us to a value of some | |
7022 | type which is *different* from the type of the parameter itself. Thus, | |
7023 | if we tried to use DECL_INCOMING_RTL to generate a location attribute in | |
7024 | such cases, the debugger would end up (for example) trying to fetch a | |
7025 | `float' from a place which actually contains the first part of a | |
7026 | `double'. That would lead to really incorrect and confusing | |
7027 | output at debug-time. | |
7028 | ||
7029 | So, in general, we *do not* use DECL_INCOMING_RTL as a backup for DECL_RTL | |
7030 | in cases where DECL_ARG_TYPE (decl) != TREE_TYPE (decl). There | |
7031 | are a couple of exceptions however. On little-endian machines we can | |
7032 | get away with using DECL_INCOMING_RTL even when DECL_ARG_TYPE (decl) is | |
7033 | not the same as TREE_TYPE (decl), but only when DECL_ARG_TYPE (decl) is | |
7034 | an integral type that is smaller than TREE_TYPE (decl). These cases arise | |
7035 | when (on a little-endian machine) a non-prototyped function has a | |
7036 | parameter declared to be of type `short' or `char'. In such cases, | |
7037 | TREE_TYPE (decl) will be `short' or `char', DECL_ARG_TYPE (decl) will | |
7038 | be `int', and DECL_INCOMING_RTL will point to the lowest-order byte of the | |
7039 | passed `int' value. If the debugger then uses that address to fetch | |
7040 | a `short' or a `char' (on a little-endian machine) the result will be | |
7041 | the correct data, so we allow for such exceptional cases below. | |
7042 | ||
7043 | Note that our goal here is to describe the place where the given formal | |
7044 | parameter lives during most of the function's activation (i.e. between | |
7045 | the end of the prologue and the start of the epilogue). We'll do that | |
7046 | as best as we can. Note however that if the given formal parameter is | |
7047 | modified sometime during the execution of the function, then a stack | |
7048 | backtrace (at debug-time) will show the function as having been | |
7049 | called with the *new* value rather than the value which was | |
7050 | originally passed in. This happens rarely enough that it is not | |
7051 | a major problem, but it *is* a problem, and I'd like to fix it. | |
7052 | ||
7053 | A future version of dwarf2out.c may generate two additional | |
7054 | attributes for any given DW_TAG_formal_parameter DIE which will | |
7055 | describe the "passed type" and the "passed location" for the | |
7056 | given formal parameter in addition to the attributes we now | |
7057 | generate to indicate the "declared type" and the "active | |
7058 | location" for each parameter. This additional set of attributes | |
7059 | could be used by debuggers for stack backtraces. Separately, note | |
7060 | that sometimes DECL_RTL can be NULL and DECL_INCOMING_RTL can be | |
7061 | NULL also. This happens (for example) for inlined-instances of | |
7062 | inline function formal parameters which are never referenced. | |
7063 | This really shouldn't be happening. All PARM_DECL nodes should | |
7064 | get valid non-NULL DECL_INCOMING_RTL values, but integrate.c | |
7065 | doesn't currently generate these values for inlined instances of | |
7066 | inline function parameters, so when we see such cases, we are | |
956d6950 | 7067 | just out-of-luck for the time being (until integrate.c |
a3f97cbb JW |
7068 | gets fixed). */ |
7069 | ||
7070 | /* Use DECL_RTL as the "location" unless we find something better. */ | |
7071 | rtl = DECL_RTL (decl); | |
7072 | ||
7073 | if (TREE_CODE (decl) == PARM_DECL) | |
7074 | { | |
7075 | if (rtl == NULL_RTX || is_pseudo_reg (rtl)) | |
7076 | { | |
7077 | declared_type = type_main_variant (TREE_TYPE (decl)); | |
7078 | passed_type = type_main_variant (DECL_ARG_TYPE (decl)); | |
a3f97cbb | 7079 | |
71dfc51f | 7080 | /* This decl represents a formal parameter which was optimized out. |
a3f97cbb JW |
7081 | Note that DECL_INCOMING_RTL may be NULL in here, but we handle |
7082 | all* cases where (rtl == NULL_RTX) just below. */ | |
7083 | if (declared_type == passed_type) | |
71dfc51f RK |
7084 | rtl = DECL_INCOMING_RTL (decl); |
7085 | else if (! BYTES_BIG_ENDIAN | |
7086 | && TREE_CODE (declared_type) == INTEGER_TYPE | |
7087 | && TYPE_SIZE (declared_type) <= TYPE_SIZE (passed_type)) | |
7088 | rtl = DECL_INCOMING_RTL (decl); | |
a3f97cbb JW |
7089 | } |
7090 | } | |
71dfc51f | 7091 | |
61b32c02 JM |
7092 | if (rtl == NULL_RTX) |
7093 | return; | |
7094 | ||
1914f5da | 7095 | rtl = eliminate_regs (rtl, 0, NULL_RTX); |
6a7a9f01 JM |
7096 | #ifdef LEAF_REG_REMAP |
7097 | if (leaf_function) | |
5f52dcfe | 7098 | leaf_renumber_regs_insn (rtl); |
6a7a9f01 JM |
7099 | #endif |
7100 | ||
a3f97cbb JW |
7101 | switch (GET_CODE (rtl)) |
7102 | { | |
e9a25f70 JL |
7103 | case ADDRESSOF: |
7104 | /* The address of a variable that was optimized away; don't emit | |
7105 | anything. */ | |
7106 | break; | |
7107 | ||
a3f97cbb JW |
7108 | case CONST_INT: |
7109 | case CONST_DOUBLE: | |
7110 | case CONST_STRING: | |
7111 | case SYMBOL_REF: | |
7112 | case LABEL_REF: | |
7113 | case CONST: | |
7114 | case PLUS: | |
7115 | /* DECL_RTL could be (plus (reg ...) (const_int ...)) */ | |
7116 | add_const_value_attribute (die, rtl); | |
7117 | break; | |
7118 | ||
7119 | case MEM: | |
7120 | case REG: | |
7121 | case SUBREG: | |
4401bf24 | 7122 | case CONCAT: |
ef76d03b | 7123 | add_AT_location_description (die, DW_AT_location, rtl); |
a3f97cbb JW |
7124 | break; |
7125 | ||
7126 | default: | |
71dfc51f | 7127 | abort (); |
a3f97cbb JW |
7128 | } |
7129 | } | |
7130 | ||
7131 | /* Generate an DW_AT_name attribute given some string value to be included as | |
7132 | the value of the attribute. */ | |
71dfc51f RK |
7133 | |
7134 | static inline void | |
a3f97cbb JW |
7135 | add_name_attribute (die, name_string) |
7136 | register dw_die_ref die; | |
7137 | register char *name_string; | |
7138 | { | |
71dfc51f RK |
7139 | if (name_string != NULL && *name_string != 0) |
7140 | add_AT_string (die, DW_AT_name, name_string); | |
a3f97cbb JW |
7141 | } |
7142 | ||
7143 | /* Given a tree node describing an array bound (either lower or upper) output | |
466446b0 | 7144 | a representation for that bound. */ |
71dfc51f | 7145 | |
a3f97cbb JW |
7146 | static void |
7147 | add_bound_info (subrange_die, bound_attr, bound) | |
7148 | register dw_die_ref subrange_die; | |
7149 | register enum dwarf_attribute bound_attr; | |
7150 | register tree bound; | |
7151 | { | |
a3f97cbb | 7152 | register unsigned bound_value = 0; |
ef76d03b JW |
7153 | |
7154 | /* If this is an Ada unconstrained array type, then don't emit any debug | |
7155 | info because the array bounds are unknown. They are parameterized when | |
7156 | the type is instantiated. */ | |
7157 | if (contains_placeholder_p (bound)) | |
7158 | return; | |
7159 | ||
a3f97cbb JW |
7160 | switch (TREE_CODE (bound)) |
7161 | { | |
7162 | case ERROR_MARK: | |
7163 | return; | |
7164 | ||
7165 | /* All fixed-bounds are represented by INTEGER_CST nodes. */ | |
7166 | case INTEGER_CST: | |
7167 | bound_value = TREE_INT_CST_LOW (bound); | |
141719a8 JM |
7168 | if (bound_attr == DW_AT_lower_bound |
7169 | && ((is_c_family () && bound_value == 0) | |
7170 | || (is_fortran () && bound_value == 1))) | |
7171 | /* use the default */; | |
7172 | else | |
7173 | add_AT_unsigned (subrange_die, bound_attr, bound_value); | |
a3f97cbb JW |
7174 | break; |
7175 | ||
b1ccbc24 | 7176 | case CONVERT_EXPR: |
a3f97cbb | 7177 | case NOP_EXPR: |
b1ccbc24 RK |
7178 | case NON_LVALUE_EXPR: |
7179 | add_bound_info (subrange_die, bound_attr, TREE_OPERAND (bound, 0)); | |
7180 | break; | |
7181 | ||
a3f97cbb JW |
7182 | case SAVE_EXPR: |
7183 | /* If optimization is turned on, the SAVE_EXPRs that describe how to | |
466446b0 JM |
7184 | access the upper bound values may be bogus. If they refer to a |
7185 | register, they may only describe how to get at these values at the | |
7186 | points in the generated code right after they have just been | |
7187 | computed. Worse yet, in the typical case, the upper bound values | |
7188 | will not even *be* computed in the optimized code (though the | |
7189 | number of elements will), so these SAVE_EXPRs are entirely | |
7190 | bogus. In order to compensate for this fact, we check here to see | |
7191 | if optimization is enabled, and if so, we don't add an attribute | |
7192 | for the (unknown and unknowable) upper bound. This should not | |
7193 | cause too much trouble for existing (stupid?) debuggers because | |
7194 | they have to deal with empty upper bounds location descriptions | |
7195 | anyway in order to be able to deal with incomplete array types. | |
7196 | Of course an intelligent debugger (GDB?) should be able to | |
7197 | comprehend that a missing upper bound specification in a array | |
7198 | type used for a storage class `auto' local array variable | |
7199 | indicates that the upper bound is both unknown (at compile- time) | |
7200 | and unknowable (at run-time) due to optimization. | |
7201 | ||
7202 | We assume that a MEM rtx is safe because gcc wouldn't put the | |
7203 | value there unless it was going to be used repeatedly in the | |
7204 | function, i.e. for cleanups. */ | |
7205 | if (! optimize || GET_CODE (SAVE_EXPR_RTL (bound)) == MEM) | |
a3f97cbb | 7206 | { |
466446b0 JM |
7207 | register dw_die_ref ctx = lookup_decl_die (current_function_decl); |
7208 | register dw_die_ref decl_die = new_die (DW_TAG_variable, ctx); | |
f5963e61 JL |
7209 | register rtx loc = SAVE_EXPR_RTL (bound); |
7210 | ||
7211 | /* If the RTL for the SAVE_EXPR is memory, handle the case where | |
7212 | it references an outer function's frame. */ | |
7213 | ||
7214 | if (GET_CODE (loc) == MEM) | |
7215 | { | |
7216 | rtx new_addr = fix_lexical_addr (XEXP (loc, 0), bound); | |
7217 | ||
7218 | if (XEXP (loc, 0) != new_addr) | |
7219 | loc = gen_rtx (MEM, GET_MODE (loc), new_addr); | |
7220 | } | |
7221 | ||
466446b0 JM |
7222 | add_AT_flag (decl_die, DW_AT_artificial, 1); |
7223 | add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx); | |
f5963e61 | 7224 | add_AT_location_description (decl_die, DW_AT_location, loc); |
466446b0 | 7225 | add_AT_die_ref (subrange_die, bound_attr, decl_die); |
a3f97cbb | 7226 | } |
71dfc51f RK |
7227 | |
7228 | /* Else leave out the attribute. */ | |
a3f97cbb | 7229 | break; |
3f76745e | 7230 | |
ef76d03b JW |
7231 | case MAX_EXPR: |
7232 | case VAR_DECL: | |
c85f7c16 | 7233 | case COMPONENT_REF: |
ef76d03b JW |
7234 | /* ??? These types of bounds can be created by the Ada front end, |
7235 | and it isn't clear how to emit debug info for them. */ | |
7236 | break; | |
7237 | ||
3f76745e JM |
7238 | default: |
7239 | abort (); | |
a3f97cbb JW |
7240 | } |
7241 | } | |
7242 | ||
7243 | /* Note that the block of subscript information for an array type also | |
7244 | includes information about the element type of type given array type. */ | |
71dfc51f | 7245 | |
a3f97cbb JW |
7246 | static void |
7247 | add_subscript_info (type_die, type) | |
7248 | register dw_die_ref type_die; | |
7249 | register tree type; | |
7250 | { | |
081f5e7e | 7251 | #ifndef MIPS_DEBUGGING_INFO |
a3f97cbb | 7252 | register unsigned dimension_number; |
081f5e7e | 7253 | #endif |
a3f97cbb JW |
7254 | register tree lower, upper; |
7255 | register dw_die_ref subrange_die; | |
7256 | ||
7257 | /* The GNU compilers represent multidimensional array types as sequences of | |
7258 | one dimensional array types whose element types are themselves array | |
7259 | types. Here we squish that down, so that each multidimensional array | |
7260 | type gets only one array_type DIE in the Dwarf debugging info. The draft | |
7261 | Dwarf specification say that we are allowed to do this kind of | |
7262 | compression in C (because there is no difference between an array or | |
7263 | arrays and a multidimensional array in C) but for other source languages | |
7264 | (e.g. Ada) we probably shouldn't do this. */ | |
71dfc51f | 7265 | |
a3f97cbb JW |
7266 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
7267 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
7268 | We work around this by disabling this feature. See also | |
7269 | gen_array_type_die. */ | |
7270 | #ifndef MIPS_DEBUGGING_INFO | |
7271 | for (dimension_number = 0; | |
7272 | TREE_CODE (type) == ARRAY_TYPE; | |
7273 | type = TREE_TYPE (type), dimension_number++) | |
7274 | { | |
7275 | #endif | |
7276 | register tree domain = TYPE_DOMAIN (type); | |
7277 | ||
7278 | /* Arrays come in three flavors: Unspecified bounds, fixed bounds, | |
7279 | and (in GNU C only) variable bounds. Handle all three forms | |
7280 | here. */ | |
7281 | subrange_die = new_die (DW_TAG_subrange_type, type_die); | |
7282 | if (domain) | |
7283 | { | |
7284 | /* We have an array type with specified bounds. */ | |
7285 | lower = TYPE_MIN_VALUE (domain); | |
7286 | upper = TYPE_MAX_VALUE (domain); | |
7287 | ||
a9d38797 JM |
7288 | /* define the index type. */ |
7289 | if (TREE_TYPE (domain)) | |
ef76d03b JW |
7290 | { |
7291 | /* ??? This is probably an Ada unnamed subrange type. Ignore the | |
7292 | TREE_TYPE field. We can't emit debug info for this | |
7293 | because it is an unnamed integral type. */ | |
7294 | if (TREE_CODE (domain) == INTEGER_TYPE | |
7295 | && TYPE_NAME (domain) == NULL_TREE | |
7296 | && TREE_CODE (TREE_TYPE (domain)) == INTEGER_TYPE | |
7297 | && TYPE_NAME (TREE_TYPE (domain)) == NULL_TREE) | |
7298 | ; | |
7299 | else | |
7300 | add_type_attribute (subrange_die, TREE_TYPE (domain), 0, 0, | |
7301 | type_die); | |
7302 | } | |
a9d38797 | 7303 | |
e1ee5cdc RH |
7304 | /* ??? If upper is NULL, the array has unspecified length, |
7305 | but it does have a lower bound. This happens with Fortran | |
7306 | dimension arr(N:*) | |
7307 | Since the debugger is definitely going to need to know N | |
7308 | to produce useful results, go ahead and output the lower | |
7309 | bound solo, and hope the debugger can cope. */ | |
7310 | ||
141719a8 | 7311 | add_bound_info (subrange_die, DW_AT_lower_bound, lower); |
e1ee5cdc RH |
7312 | if (upper) |
7313 | add_bound_info (subrange_die, DW_AT_upper_bound, upper); | |
a3f97cbb JW |
7314 | } |
7315 | else | |
71dfc51f | 7316 | /* We have an array type with an unspecified length. The DWARF-2 |
a9d38797 JM |
7317 | spec does not say how to handle this; let's just leave out the |
7318 | bounds. */ | |
2d8b0f3a JL |
7319 | {;} |
7320 | ||
71dfc51f | 7321 | |
a3f97cbb JW |
7322 | #ifndef MIPS_DEBUGGING_INFO |
7323 | } | |
7324 | #endif | |
7325 | } | |
7326 | ||
7327 | static void | |
7328 | add_byte_size_attribute (die, tree_node) | |
7329 | dw_die_ref die; | |
7330 | register tree tree_node; | |
7331 | { | |
7332 | register unsigned size; | |
7333 | ||
7334 | switch (TREE_CODE (tree_node)) | |
7335 | { | |
7336 | case ERROR_MARK: | |
7337 | size = 0; | |
7338 | break; | |
7339 | case ENUMERAL_TYPE: | |
7340 | case RECORD_TYPE: | |
7341 | case UNION_TYPE: | |
7342 | case QUAL_UNION_TYPE: | |
7343 | size = int_size_in_bytes (tree_node); | |
7344 | break; | |
7345 | case FIELD_DECL: | |
7346 | /* For a data member of a struct or union, the DW_AT_byte_size is | |
7347 | generally given as the number of bytes normally allocated for an | |
7348 | object of the *declared* type of the member itself. This is true | |
7349 | even for bit-fields. */ | |
7350 | size = simple_type_size_in_bits (field_type (tree_node)) / BITS_PER_UNIT; | |
7351 | break; | |
7352 | default: | |
7353 | abort (); | |
7354 | } | |
7355 | ||
7356 | /* Note that `size' might be -1 when we get to this point. If it is, that | |
7357 | indicates that the byte size of the entity in question is variable. We | |
7358 | have no good way of expressing this fact in Dwarf at the present time, | |
7359 | so just let the -1 pass on through. */ | |
7360 | ||
7361 | add_AT_unsigned (die, DW_AT_byte_size, size); | |
7362 | } | |
7363 | ||
7364 | /* For a FIELD_DECL node which represents a bit-field, output an attribute | |
7365 | which specifies the distance in bits from the highest order bit of the | |
7366 | "containing object" for the bit-field to the highest order bit of the | |
7367 | bit-field itself. | |
7368 | ||
b2932ae5 JM |
7369 | For any given bit-field, the "containing object" is a hypothetical |
7370 | object (of some integral or enum type) within which the given bit-field | |
7371 | lives. The type of this hypothetical "containing object" is always the | |
7372 | same as the declared type of the individual bit-field itself. The | |
7373 | determination of the exact location of the "containing object" for a | |
7374 | bit-field is rather complicated. It's handled by the | |
7375 | `field_byte_offset' function (above). | |
a3f97cbb JW |
7376 | |
7377 | Note that it is the size (in bytes) of the hypothetical "containing object" | |
7378 | which will be given in the DW_AT_byte_size attribute for this bit-field. | |
7379 | (See `byte_size_attribute' above). */ | |
71dfc51f RK |
7380 | |
7381 | static inline void | |
a3f97cbb JW |
7382 | add_bit_offset_attribute (die, decl) |
7383 | register dw_die_ref die; | |
7384 | register tree decl; | |
7385 | { | |
7386 | register unsigned object_offset_in_bytes = field_byte_offset (decl); | |
7387 | register tree type = DECL_BIT_FIELD_TYPE (decl); | |
7388 | register tree bitpos_tree = DECL_FIELD_BITPOS (decl); | |
7389 | register unsigned bitpos_int; | |
7390 | register unsigned highest_order_object_bit_offset; | |
7391 | register unsigned highest_order_field_bit_offset; | |
7392 | register unsigned bit_offset; | |
7393 | ||
3a88cbd1 JL |
7394 | /* Must be a field and a bit field. */ |
7395 | if (!type | |
7396 | || TREE_CODE (decl) != FIELD_DECL) | |
7397 | abort (); | |
a3f97cbb JW |
7398 | |
7399 | /* We can't yet handle bit-fields whose offsets are variable, so if we | |
7400 | encounter such things, just return without generating any attribute | |
7401 | whatsoever. */ | |
7402 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
71dfc51f RK |
7403 | return; |
7404 | ||
a3f97cbb JW |
7405 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); |
7406 | ||
7407 | /* Note that the bit offset is always the distance (in bits) from the | |
7408 | highest-order bit of the "containing object" to the highest-order bit of | |
7409 | the bit-field itself. Since the "high-order end" of any object or field | |
7410 | is different on big-endian and little-endian machines, the computation | |
7411 | below must take account of these differences. */ | |
7412 | highest_order_object_bit_offset = object_offset_in_bytes * BITS_PER_UNIT; | |
7413 | highest_order_field_bit_offset = bitpos_int; | |
7414 | ||
71dfc51f | 7415 | if (! BYTES_BIG_ENDIAN) |
a3f97cbb JW |
7416 | { |
7417 | highest_order_field_bit_offset | |
7418 | += (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl)); | |
7419 | ||
7420 | highest_order_object_bit_offset += simple_type_size_in_bits (type); | |
7421 | } | |
71dfc51f RK |
7422 | |
7423 | bit_offset | |
7424 | = (! BYTES_BIG_ENDIAN | |
7425 | ? highest_order_object_bit_offset - highest_order_field_bit_offset | |
7426 | : highest_order_field_bit_offset - highest_order_object_bit_offset); | |
a3f97cbb JW |
7427 | |
7428 | add_AT_unsigned (die, DW_AT_bit_offset, bit_offset); | |
7429 | } | |
7430 | ||
7431 | /* For a FIELD_DECL node which represents a bit field, output an attribute | |
7432 | which specifies the length in bits of the given field. */ | |
71dfc51f RK |
7433 | |
7434 | static inline void | |
a3f97cbb JW |
7435 | add_bit_size_attribute (die, decl) |
7436 | register dw_die_ref die; | |
7437 | register tree decl; | |
7438 | { | |
3a88cbd1 JL |
7439 | /* Must be a field and a bit field. */ |
7440 | if (TREE_CODE (decl) != FIELD_DECL | |
7441 | || ! DECL_BIT_FIELD_TYPE (decl)) | |
7442 | abort (); | |
a3f97cbb JW |
7443 | add_AT_unsigned (die, DW_AT_bit_size, |
7444 | (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl))); | |
7445 | } | |
7446 | ||
88dad228 | 7447 | /* If the compiled language is ANSI C, then add a 'prototyped' |
a3f97cbb | 7448 | attribute, if arg types are given for the parameters of a function. */ |
71dfc51f RK |
7449 | |
7450 | static inline void | |
a3f97cbb JW |
7451 | add_prototyped_attribute (die, func_type) |
7452 | register dw_die_ref die; | |
7453 | register tree func_type; | |
7454 | { | |
88dad228 JM |
7455 | if (get_AT_unsigned (comp_unit_die, DW_AT_language) == DW_LANG_C89 |
7456 | && TYPE_ARG_TYPES (func_type) != NULL) | |
7457 | add_AT_flag (die, DW_AT_prototyped, 1); | |
a3f97cbb JW |
7458 | } |
7459 | ||
7460 | ||
7461 | /* Add an 'abstract_origin' attribute below a given DIE. The DIE is found | |
7462 | by looking in either the type declaration or object declaration | |
7463 | equate table. */ | |
71dfc51f RK |
7464 | |
7465 | static inline void | |
a3f97cbb JW |
7466 | add_abstract_origin_attribute (die, origin) |
7467 | register dw_die_ref die; | |
7468 | register tree origin; | |
7469 | { | |
7470 | dw_die_ref origin_die = NULL; | |
7471 | if (TREE_CODE_CLASS (TREE_CODE (origin)) == 'd') | |
71dfc51f | 7472 | origin_die = lookup_decl_die (origin); |
a3f97cbb | 7473 | else if (TREE_CODE_CLASS (TREE_CODE (origin)) == 't') |
71dfc51f RK |
7474 | origin_die = lookup_type_die (origin); |
7475 | ||
a3f97cbb JW |
7476 | add_AT_die_ref (die, DW_AT_abstract_origin, origin_die); |
7477 | } | |
7478 | ||
bdb669cb JM |
7479 | /* We do not currently support the pure_virtual attribute. */ |
7480 | ||
71dfc51f | 7481 | static inline void |
a3f97cbb JW |
7482 | add_pure_or_virtual_attribute (die, func_decl) |
7483 | register dw_die_ref die; | |
7484 | register tree func_decl; | |
7485 | { | |
a94dbf2c | 7486 | if (DECL_VINDEX (func_decl)) |
a3f97cbb | 7487 | { |
bdb669cb | 7488 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); |
71dfc51f RK |
7489 | add_AT_loc (die, DW_AT_vtable_elem_location, |
7490 | new_loc_descr (DW_OP_constu, | |
7491 | TREE_INT_CST_LOW (DECL_VINDEX (func_decl)), | |
7492 | 0)); | |
7493 | ||
a94dbf2c JM |
7494 | /* GNU extension: Record what type this method came from originally. */ |
7495 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
7496 | add_AT_die_ref (die, DW_AT_containing_type, | |
7497 | lookup_type_die (DECL_CONTEXT (func_decl))); | |
a3f97cbb JW |
7498 | } |
7499 | } | |
7500 | \f | |
b2932ae5 | 7501 | /* Add source coordinate attributes for the given decl. */ |
71dfc51f | 7502 | |
b2932ae5 JM |
7503 | static void |
7504 | add_src_coords_attributes (die, decl) | |
7505 | register dw_die_ref die; | |
7506 | register tree decl; | |
7507 | { | |
7508 | register unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 7509 | |
b2932ae5 JM |
7510 | add_AT_unsigned (die, DW_AT_decl_file, file_index); |
7511 | add_AT_unsigned (die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
7512 | } | |
7513 | ||
a3f97cbb JW |
7514 | /* Add an DW_AT_name attribute and source coordinate attribute for the |
7515 | given decl, but only if it actually has a name. */ | |
71dfc51f | 7516 | |
a3f97cbb JW |
7517 | static void |
7518 | add_name_and_src_coords_attributes (die, decl) | |
7519 | register dw_die_ref die; | |
7520 | register tree decl; | |
7521 | { | |
61b32c02 | 7522 | register tree decl_name; |
71dfc51f | 7523 | |
a1d7ffe3 | 7524 | decl_name = DECL_NAME (decl); |
71dfc51f | 7525 | if (decl_name != NULL && IDENTIFIER_POINTER (decl_name) != NULL) |
a3f97cbb | 7526 | { |
a1d7ffe3 | 7527 | add_name_attribute (die, dwarf2_name (decl, 0)); |
b2932ae5 | 7528 | add_src_coords_attributes (die, decl); |
a1d7ffe3 JM |
7529 | if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL) |
7530 | && DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl)) | |
7531 | add_AT_string (die, DW_AT_MIPS_linkage_name, | |
7532 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
a3f97cbb JW |
7533 | } |
7534 | } | |
7535 | ||
7536 | /* Push a new declaration scope. */ | |
71dfc51f | 7537 | |
a3f97cbb JW |
7538 | static void |
7539 | push_decl_scope (scope) | |
7540 | tree scope; | |
7541 | { | |
e3e7774e JW |
7542 | tree containing_scope; |
7543 | int i; | |
7544 | ||
a3f97cbb JW |
7545 | /* Make room in the decl_scope_table, if necessary. */ |
7546 | if (decl_scope_table_allocated == decl_scope_depth) | |
7547 | { | |
7548 | decl_scope_table_allocated += DECL_SCOPE_TABLE_INCREMENT; | |
71dfc51f | 7549 | decl_scope_table |
e3e7774e JW |
7550 | = (decl_scope_node *) xrealloc (decl_scope_table, |
7551 | (decl_scope_table_allocated | |
7552 | * sizeof (decl_scope_node))); | |
a3f97cbb | 7553 | } |
71dfc51f | 7554 | |
e3e7774e JW |
7555 | decl_scope_table[decl_scope_depth].scope = scope; |
7556 | ||
7557 | /* Sometimes, while recursively emitting subtypes within a class type, | |
7558 | we end up recuring on a subtype at a higher level then the current | |
7559 | subtype. In such a case, we need to search the decl_scope_table to | |
7560 | find the parent of this subtype. */ | |
7561 | ||
5f2f160c | 7562 | if (AGGREGATE_TYPE_P (scope)) |
e3e7774e JW |
7563 | containing_scope = TYPE_CONTEXT (scope); |
7564 | else | |
7565 | containing_scope = NULL_TREE; | |
7566 | ||
7567 | /* The normal case. */ | |
7568 | if (decl_scope_depth == 0 | |
7569 | || containing_scope == NULL_TREE | |
2addbe1d JM |
7570 | /* Ignore namespaces for the moment. */ |
7571 | || TREE_CODE (containing_scope) == NAMESPACE_DECL | |
e3e7774e JW |
7572 | || containing_scope == decl_scope_table[decl_scope_depth - 1].scope) |
7573 | decl_scope_table[decl_scope_depth].previous = decl_scope_depth - 1; | |
7574 | else | |
7575 | { | |
7576 | /* We need to search for the containing_scope. */ | |
7577 | for (i = 0; i < decl_scope_depth; i++) | |
7578 | if (decl_scope_table[i].scope == containing_scope) | |
7579 | break; | |
7580 | ||
7581 | if (i == decl_scope_depth) | |
7582 | abort (); | |
7583 | else | |
7584 | decl_scope_table[decl_scope_depth].previous = i; | |
7585 | } | |
7586 | ||
7587 | decl_scope_depth++; | |
a3f97cbb JW |
7588 | } |
7589 | ||
2addbe1d | 7590 | /* Return the DIE for the scope that immediately contains this declaration. */ |
71dfc51f | 7591 | |
a3f97cbb | 7592 | static dw_die_ref |
ab72d377 JM |
7593 | scope_die_for (t, context_die) |
7594 | register tree t; | |
a3f97cbb JW |
7595 | register dw_die_ref context_die; |
7596 | { | |
7597 | register dw_die_ref scope_die = NULL; | |
7598 | register tree containing_scope; | |
e3e7774e | 7599 | register int i; |
a3f97cbb JW |
7600 | |
7601 | /* Walk back up the declaration tree looking for a place to define | |
7602 | this type. */ | |
ab72d377 JM |
7603 | if (TREE_CODE_CLASS (TREE_CODE (t)) == 't') |
7604 | containing_scope = TYPE_CONTEXT (t); | |
a94dbf2c | 7605 | else if (TREE_CODE (t) == FUNCTION_DECL && DECL_VINDEX (t)) |
ab72d377 JM |
7606 | containing_scope = decl_class_context (t); |
7607 | else | |
7608 | containing_scope = DECL_CONTEXT (t); | |
7609 | ||
2addbe1d JM |
7610 | /* Ignore namespaces for the moment. */ |
7611 | if (containing_scope && TREE_CODE (containing_scope) == NAMESPACE_DECL) | |
7612 | containing_scope = NULL_TREE; | |
7613 | ||
5f2f160c JM |
7614 | /* Ignore function type "scopes" from the C frontend. They mean that |
7615 | a tagged type is local to a parmlist of a function declarator, but | |
7616 | that isn't useful to DWARF. */ | |
7617 | if (containing_scope && TREE_CODE (containing_scope) == FUNCTION_TYPE) | |
7618 | containing_scope = NULL_TREE; | |
7619 | ||
ef76d03b JW |
7620 | /* Function-local tags and functions get stuck in limbo until they are |
7621 | fixed up by decls_for_scope. */ | |
7622 | if (context_die == NULL && containing_scope != NULL_TREE | |
7623 | && (TREE_CODE (t) == FUNCTION_DECL || is_tagged_type (t))) | |
7624 | return NULL; | |
7625 | ||
71dfc51f RK |
7626 | if (containing_scope == NULL_TREE) |
7627 | scope_die = comp_unit_die; | |
a3f97cbb JW |
7628 | else |
7629 | { | |
e3e7774e JW |
7630 | for (i = decl_scope_depth - 1, scope_die = context_die; |
7631 | i >= 0 && decl_scope_table[i].scope != containing_scope; | |
7632 | (scope_die = scope_die->die_parent, | |
7633 | i = decl_scope_table[i].previous)) | |
71dfc51f RK |
7634 | ; |
7635 | ||
0c84c618 JW |
7636 | /* ??? Integrate_decl_tree does not handle BLOCK_TYPE_TAGS, nor |
7637 | does it try to handle types defined by TYPE_DECLs. Such types | |
7638 | thus have an incorrect TYPE_CONTEXT, which points to the block | |
7639 | they were originally defined in, instead of the current block | |
7640 | created by function inlining. We try to detect that here and | |
7641 | work around it. */ | |
7642 | ||
7643 | if (i < 0 && scope_die == comp_unit_die | |
7644 | && TREE_CODE (containing_scope) == BLOCK | |
7645 | && is_tagged_type (t) | |
7646 | && (block_ultimate_origin (decl_scope_table[decl_scope_depth - 1].scope) | |
7647 | == containing_scope)) | |
7648 | { | |
7649 | scope_die = context_die; | |
7650 | /* Since the checks below are no longer applicable. */ | |
7651 | i = 0; | |
7652 | } | |
7653 | ||
e3e7774e | 7654 | if (i < 0) |
a3f97cbb | 7655 | { |
3a88cbd1 JL |
7656 | if (scope_die != comp_unit_die |
7657 | || TREE_CODE_CLASS (TREE_CODE (containing_scope)) != 't') | |
7658 | abort (); | |
7659 | if (debug_info_level > DINFO_LEVEL_TERSE | |
7660 | && !TREE_ASM_WRITTEN (containing_scope)) | |
7661 | abort (); | |
a3f97cbb JW |
7662 | } |
7663 | } | |
71dfc51f | 7664 | |
a3f97cbb JW |
7665 | return scope_die; |
7666 | } | |
7667 | ||
7668 | /* Pop a declaration scope. */ | |
71dfc51f | 7669 | static inline void |
a3f97cbb JW |
7670 | pop_decl_scope () |
7671 | { | |
3a88cbd1 JL |
7672 | if (decl_scope_depth <= 0) |
7673 | abort (); | |
a3f97cbb JW |
7674 | --decl_scope_depth; |
7675 | } | |
7676 | ||
7677 | /* Many forms of DIEs require a "type description" attribute. This | |
7678 | routine locates the proper "type descriptor" die for the type given | |
7679 | by 'type', and adds an DW_AT_type attribute below the given die. */ | |
71dfc51f | 7680 | |
a3f97cbb JW |
7681 | static void |
7682 | add_type_attribute (object_die, type, decl_const, decl_volatile, context_die) | |
7683 | register dw_die_ref object_die; | |
7684 | register tree type; | |
7685 | register int decl_const; | |
7686 | register int decl_volatile; | |
7687 | register dw_die_ref context_die; | |
7688 | { | |
7689 | register enum tree_code code = TREE_CODE (type); | |
a3f97cbb JW |
7690 | register dw_die_ref type_die = NULL; |
7691 | ||
ef76d03b JW |
7692 | /* ??? If this type is an unnamed subrange type of an integral or |
7693 | floating-point type, use the inner type. This is because we have no | |
7694 | support for unnamed types in base_type_die. This can happen if this is | |
7695 | an Ada subrange type. Correct solution is emit a subrange type die. */ | |
b1ccbc24 RK |
7696 | if ((code == INTEGER_TYPE || code == REAL_TYPE) |
7697 | && TREE_TYPE (type) != 0 && TYPE_NAME (type) == 0) | |
7698 | type = TREE_TYPE (type), code = TREE_CODE (type); | |
7699 | ||
a3f97cbb | 7700 | if (code == ERROR_MARK) |
b1ccbc24 | 7701 | return; |
a3f97cbb JW |
7702 | |
7703 | /* Handle a special case. For functions whose return type is void, we | |
7704 | generate *no* type attribute. (Note that no object may have type | |
7705 | `void', so this only applies to function return types). */ | |
7706 | if (code == VOID_TYPE) | |
b1ccbc24 | 7707 | return; |
a3f97cbb | 7708 | |
a3f97cbb JW |
7709 | type_die = modified_type_die (type, |
7710 | decl_const || TYPE_READONLY (type), | |
7711 | decl_volatile || TYPE_VOLATILE (type), | |
ab72d377 | 7712 | context_die); |
a3f97cbb | 7713 | if (type_die != NULL) |
71dfc51f | 7714 | add_AT_die_ref (object_die, DW_AT_type, type_die); |
a3f97cbb JW |
7715 | } |
7716 | ||
7717 | /* Given a tree pointer to a struct, class, union, or enum type node, return | |
7718 | a pointer to the (string) tag name for the given type, or zero if the type | |
7719 | was declared without a tag. */ | |
71dfc51f | 7720 | |
a3f97cbb JW |
7721 | static char * |
7722 | type_tag (type) | |
7723 | register tree type; | |
7724 | { | |
7725 | register char *name = 0; | |
7726 | ||
7727 | if (TYPE_NAME (type) != 0) | |
7728 | { | |
7729 | register tree t = 0; | |
7730 | ||
7731 | /* Find the IDENTIFIER_NODE for the type name. */ | |
7732 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
7733 | t = TYPE_NAME (type); | |
bdb669cb | 7734 | |
a3f97cbb JW |
7735 | /* The g++ front end makes the TYPE_NAME of *each* tagged type point to |
7736 | a TYPE_DECL node, regardless of whether or not a `typedef' was | |
bdb669cb | 7737 | involved. */ |
a94dbf2c JM |
7738 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
7739 | && ! DECL_IGNORED_P (TYPE_NAME (type))) | |
a3f97cbb | 7740 | t = DECL_NAME (TYPE_NAME (type)); |
bdb669cb | 7741 | |
a3f97cbb JW |
7742 | /* Now get the name as a string, or invent one. */ |
7743 | if (t != 0) | |
a94dbf2c | 7744 | name = IDENTIFIER_POINTER (t); |
a3f97cbb | 7745 | } |
71dfc51f | 7746 | |
a3f97cbb JW |
7747 | return (name == 0 || *name == '\0') ? 0 : name; |
7748 | } | |
7749 | ||
7750 | /* Return the type associated with a data member, make a special check | |
7751 | for bit field types. */ | |
71dfc51f RK |
7752 | |
7753 | static inline tree | |
a3f97cbb JW |
7754 | member_declared_type (member) |
7755 | register tree member; | |
7756 | { | |
71dfc51f RK |
7757 | return (DECL_BIT_FIELD_TYPE (member) |
7758 | ? DECL_BIT_FIELD_TYPE (member) | |
7759 | : TREE_TYPE (member)); | |
a3f97cbb JW |
7760 | } |
7761 | ||
d291dd49 | 7762 | /* Get the decl's label, as described by its RTL. This may be different |
a3f97cbb | 7763 | from the DECL_NAME name used in the source file. */ |
71dfc51f | 7764 | |
487a6e06 | 7765 | #if 0 |
a3f97cbb | 7766 | static char * |
d291dd49 | 7767 | decl_start_label (decl) |
a3f97cbb JW |
7768 | register tree decl; |
7769 | { | |
7770 | rtx x; | |
7771 | char *fnname; | |
7772 | x = DECL_RTL (decl); | |
7773 | if (GET_CODE (x) != MEM) | |
71dfc51f RK |
7774 | abort (); |
7775 | ||
a3f97cbb JW |
7776 | x = XEXP (x, 0); |
7777 | if (GET_CODE (x) != SYMBOL_REF) | |
71dfc51f RK |
7778 | abort (); |
7779 | ||
a3f97cbb JW |
7780 | fnname = XSTR (x, 0); |
7781 | return fnname; | |
7782 | } | |
487a6e06 | 7783 | #endif |
a3f97cbb | 7784 | \f |
956d6950 | 7785 | /* These routines generate the internal representation of the DIE's for |
a3f97cbb | 7786 | the compilation unit. Debugging information is collected by walking |
88dad228 | 7787 | the declaration trees passed in from dwarf2out_decl(). */ |
a3f97cbb JW |
7788 | |
7789 | static void | |
7790 | gen_array_type_die (type, context_die) | |
7791 | register tree type; | |
7792 | register dw_die_ref context_die; | |
7793 | { | |
ab72d377 | 7794 | register dw_die_ref scope_die = scope_die_for (type, context_die); |
a9d38797 | 7795 | register dw_die_ref array_die; |
a3f97cbb | 7796 | register tree element_type; |
bdb669cb | 7797 | |
a9d38797 JM |
7798 | /* ??? The SGI dwarf reader fails for array of array of enum types unless |
7799 | the inner array type comes before the outer array type. Thus we must | |
7800 | call gen_type_die before we call new_die. See below also. */ | |
7801 | #ifdef MIPS_DEBUGGING_INFO | |
7802 | gen_type_die (TREE_TYPE (type), context_die); | |
7803 | #endif | |
7804 | ||
7805 | array_die = new_die (DW_TAG_array_type, scope_die); | |
7806 | ||
a3f97cbb JW |
7807 | #if 0 |
7808 | /* We default the array ordering. SDB will probably do | |
7809 | the right things even if DW_AT_ordering is not present. It's not even | |
7810 | an issue until we start to get into multidimensional arrays anyway. If | |
7811 | SDB is ever caught doing the Wrong Thing for multi-dimensional arrays, | |
7812 | then we'll have to put the DW_AT_ordering attribute back in. (But if | |
7813 | and when we find out that we need to put these in, we will only do so | |
7814 | for multidimensional arrays. */ | |
7815 | add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_row_major); | |
7816 | #endif | |
7817 | ||
a9d38797 | 7818 | #ifdef MIPS_DEBUGGING_INFO |
4edb7b60 JM |
7819 | /* The SGI compilers handle arrays of unknown bound by setting |
7820 | AT_declaration and not emitting any subrange DIEs. */ | |
a9d38797 JM |
7821 | if (! TYPE_DOMAIN (type)) |
7822 | add_AT_unsigned (array_die, DW_AT_declaration, 1); | |
7823 | else | |
7824 | #endif | |
7825 | add_subscript_info (array_die, type); | |
a3f97cbb JW |
7826 | |
7827 | equate_type_number_to_die (type, array_die); | |
7828 | ||
7829 | /* Add representation of the type of the elements of this array type. */ | |
7830 | element_type = TREE_TYPE (type); | |
71dfc51f | 7831 | |
a3f97cbb JW |
7832 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a |
7833 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
7834 | We work around this by disabling this feature. See also | |
7835 | add_subscript_info. */ | |
7836 | #ifndef MIPS_DEBUGGING_INFO | |
71dfc51f RK |
7837 | while (TREE_CODE (element_type) == ARRAY_TYPE) |
7838 | element_type = TREE_TYPE (element_type); | |
7839 | ||
a3f97cbb | 7840 | gen_type_die (element_type, context_die); |
a9d38797 | 7841 | #endif |
a3f97cbb JW |
7842 | |
7843 | add_type_attribute (array_die, element_type, 0, 0, context_die); | |
7844 | } | |
7845 | ||
7846 | static void | |
7847 | gen_set_type_die (type, context_die) | |
7848 | register tree type; | |
7849 | register dw_die_ref context_die; | |
7850 | { | |
71dfc51f RK |
7851 | register dw_die_ref type_die |
7852 | = new_die (DW_TAG_set_type, scope_die_for (type, context_die)); | |
7853 | ||
a3f97cbb | 7854 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
7855 | add_type_attribute (type_die, TREE_TYPE (type), 0, 0, context_die); |
7856 | } | |
7857 | ||
d6f4ec51 | 7858 | #if 0 |
a3f97cbb JW |
7859 | static void |
7860 | gen_entry_point_die (decl, context_die) | |
7861 | register tree decl; | |
7862 | register dw_die_ref context_die; | |
7863 | { | |
7864 | register tree origin = decl_ultimate_origin (decl); | |
7865 | register dw_die_ref decl_die = new_die (DW_TAG_entry_point, context_die); | |
7866 | if (origin != NULL) | |
71dfc51f | 7867 | add_abstract_origin_attribute (decl_die, origin); |
a3f97cbb JW |
7868 | else |
7869 | { | |
7870 | add_name_and_src_coords_attributes (decl_die, decl); | |
a3f97cbb JW |
7871 | add_type_attribute (decl_die, TREE_TYPE (TREE_TYPE (decl)), |
7872 | 0, 0, context_die); | |
7873 | } | |
71dfc51f | 7874 | |
a3f97cbb | 7875 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 7876 | equate_decl_number_to_die (decl, decl_die); |
a3f97cbb | 7877 | else |
71dfc51f | 7878 | add_AT_lbl_id (decl_die, DW_AT_low_pc, decl_start_label (decl)); |
a3f97cbb | 7879 | } |
d6f4ec51 | 7880 | #endif |
a3f97cbb | 7881 | |
a94dbf2c JM |
7882 | /* Remember a type in the pending_types_list. */ |
7883 | ||
7884 | static void | |
7885 | pend_type (type) | |
7886 | register tree type; | |
7887 | { | |
7888 | if (pending_types == pending_types_allocated) | |
7889 | { | |
7890 | pending_types_allocated += PENDING_TYPES_INCREMENT; | |
7891 | pending_types_list | |
7892 | = (tree *) xrealloc (pending_types_list, | |
7893 | sizeof (tree) * pending_types_allocated); | |
7894 | } | |
71dfc51f | 7895 | |
a94dbf2c JM |
7896 | pending_types_list[pending_types++] = type; |
7897 | } | |
7898 | ||
7899 | /* Output any pending types (from the pending_types list) which we can output | |
7900 | now (taking into account the scope that we are working on now). | |
7901 | ||
7902 | For each type output, remove the given type from the pending_types_list | |
7903 | *before* we try to output it. */ | |
7904 | ||
7905 | static void | |
7906 | output_pending_types_for_scope (context_die) | |
7907 | register dw_die_ref context_die; | |
7908 | { | |
7909 | register tree type; | |
7910 | ||
7911 | while (pending_types) | |
7912 | { | |
7913 | --pending_types; | |
7914 | type = pending_types_list[pending_types]; | |
7915 | gen_type_die (type, context_die); | |
3a88cbd1 JL |
7916 | if (!TREE_ASM_WRITTEN (type)) |
7917 | abort (); | |
a94dbf2c JM |
7918 | } |
7919 | } | |
7920 | ||
a3f97cbb | 7921 | /* Generate a DIE to represent an inlined instance of an enumeration type. */ |
71dfc51f | 7922 | |
a3f97cbb JW |
7923 | static void |
7924 | gen_inlined_enumeration_type_die (type, context_die) | |
7925 | register tree type; | |
7926 | register dw_die_ref context_die; | |
7927 | { | |
71dfc51f RK |
7928 | register dw_die_ref type_die = new_die (DW_TAG_enumeration_type, |
7929 | scope_die_for (type, context_die)); | |
7930 | ||
3a88cbd1 JL |
7931 | if (!TREE_ASM_WRITTEN (type)) |
7932 | abort (); | |
a3f97cbb JW |
7933 | add_abstract_origin_attribute (type_die, type); |
7934 | } | |
7935 | ||
7936 | /* Generate a DIE to represent an inlined instance of a structure type. */ | |
71dfc51f | 7937 | |
a3f97cbb JW |
7938 | static void |
7939 | gen_inlined_structure_type_die (type, context_die) | |
7940 | register tree type; | |
7941 | register dw_die_ref context_die; | |
7942 | { | |
71dfc51f RK |
7943 | register dw_die_ref type_die = new_die (DW_TAG_structure_type, |
7944 | scope_die_for (type, context_die)); | |
7945 | ||
3a88cbd1 JL |
7946 | if (!TREE_ASM_WRITTEN (type)) |
7947 | abort (); | |
a3f97cbb JW |
7948 | add_abstract_origin_attribute (type_die, type); |
7949 | } | |
7950 | ||
7951 | /* Generate a DIE to represent an inlined instance of a union type. */ | |
71dfc51f | 7952 | |
a3f97cbb JW |
7953 | static void |
7954 | gen_inlined_union_type_die (type, context_die) | |
7955 | register tree type; | |
7956 | register dw_die_ref context_die; | |
7957 | { | |
71dfc51f RK |
7958 | register dw_die_ref type_die = new_die (DW_TAG_union_type, |
7959 | scope_die_for (type, context_die)); | |
7960 | ||
3a88cbd1 JL |
7961 | if (!TREE_ASM_WRITTEN (type)) |
7962 | abort (); | |
a3f97cbb JW |
7963 | add_abstract_origin_attribute (type_die, type); |
7964 | } | |
7965 | ||
7966 | /* Generate a DIE to represent an enumeration type. Note that these DIEs | |
7967 | include all of the information about the enumeration values also. Each | |
273dbe67 JM |
7968 | enumerated type name/value is listed as a child of the enumerated type |
7969 | DIE. */ | |
71dfc51f | 7970 | |
a3f97cbb | 7971 | static void |
273dbe67 | 7972 | gen_enumeration_type_die (type, context_die) |
a3f97cbb | 7973 | register tree type; |
a3f97cbb JW |
7974 | register dw_die_ref context_die; |
7975 | { | |
273dbe67 JM |
7976 | register dw_die_ref type_die = lookup_type_die (type); |
7977 | ||
a3f97cbb JW |
7978 | if (type_die == NULL) |
7979 | { | |
7980 | type_die = new_die (DW_TAG_enumeration_type, | |
ab72d377 | 7981 | scope_die_for (type, context_die)); |
a3f97cbb JW |
7982 | equate_type_number_to_die (type, type_die); |
7983 | add_name_attribute (type_die, type_tag (type)); | |
a3f97cbb | 7984 | } |
273dbe67 JM |
7985 | else if (! TYPE_SIZE (type)) |
7986 | return; | |
7987 | else | |
7988 | remove_AT (type_die, DW_AT_declaration); | |
7989 | ||
7990 | /* Handle a GNU C/C++ extension, i.e. incomplete enum types. If the | |
7991 | given enum type is incomplete, do not generate the DW_AT_byte_size | |
7992 | attribute or the DW_AT_element_list attribute. */ | |
7993 | if (TYPE_SIZE (type)) | |
a3f97cbb | 7994 | { |
273dbe67 | 7995 | register tree link; |
71dfc51f | 7996 | |
a082c85a | 7997 | TREE_ASM_WRITTEN (type) = 1; |
273dbe67 | 7998 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 7999 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 8000 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 8001 | |
ef76d03b JW |
8002 | /* If the first reference to this type was as the return type of an |
8003 | inline function, then it may not have a parent. Fix this now. */ | |
8004 | if (type_die->die_parent == NULL) | |
8005 | add_child_die (scope_die_for (type, context_die), type_die); | |
8006 | ||
273dbe67 JM |
8007 | for (link = TYPE_FIELDS (type); |
8008 | link != NULL; link = TREE_CHAIN (link)) | |
a3f97cbb | 8009 | { |
273dbe67 | 8010 | register dw_die_ref enum_die = new_die (DW_TAG_enumerator, type_die); |
71dfc51f | 8011 | |
273dbe67 JM |
8012 | add_name_attribute (enum_die, |
8013 | IDENTIFIER_POINTER (TREE_PURPOSE (link))); | |
8014 | add_AT_unsigned (enum_die, DW_AT_const_value, | |
a3f97cbb | 8015 | (unsigned) TREE_INT_CST_LOW (TREE_VALUE (link))); |
a3f97cbb JW |
8016 | } |
8017 | } | |
273dbe67 JM |
8018 | else |
8019 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
8020 | } |
8021 | ||
8022 | ||
8023 | /* Generate a DIE to represent either a real live formal parameter decl or to | |
8024 | represent just the type of some formal parameter position in some function | |
8025 | type. | |
71dfc51f | 8026 | |
a3f97cbb JW |
8027 | Note that this routine is a bit unusual because its argument may be a |
8028 | ..._DECL node (i.e. either a PARM_DECL or perhaps a VAR_DECL which | |
8029 | represents an inlining of some PARM_DECL) or else some sort of a ..._TYPE | |
8030 | node. If it's the former then this function is being called to output a | |
8031 | DIE to represent a formal parameter object (or some inlining thereof). If | |
8032 | it's the latter, then this function is only being called to output a | |
8033 | DW_TAG_formal_parameter DIE to stand as a placeholder for some formal | |
8034 | argument type of some subprogram type. */ | |
71dfc51f | 8035 | |
a94dbf2c | 8036 | static dw_die_ref |
a3f97cbb JW |
8037 | gen_formal_parameter_die (node, context_die) |
8038 | register tree node; | |
8039 | register dw_die_ref context_die; | |
8040 | { | |
71dfc51f RK |
8041 | register dw_die_ref parm_die |
8042 | = new_die (DW_TAG_formal_parameter, context_die); | |
a3f97cbb | 8043 | register tree origin; |
71dfc51f | 8044 | |
a3f97cbb JW |
8045 | switch (TREE_CODE_CLASS (TREE_CODE (node))) |
8046 | { | |
a3f97cbb JW |
8047 | case 'd': |
8048 | origin = decl_ultimate_origin (node); | |
8049 | if (origin != NULL) | |
a94dbf2c | 8050 | add_abstract_origin_attribute (parm_die, origin); |
a3f97cbb JW |
8051 | else |
8052 | { | |
8053 | add_name_and_src_coords_attributes (parm_die, node); | |
8054 | add_type_attribute (parm_die, TREE_TYPE (node), | |
8055 | TREE_READONLY (node), | |
8056 | TREE_THIS_VOLATILE (node), | |
8057 | context_die); | |
bdb669cb JM |
8058 | if (DECL_ARTIFICIAL (node)) |
8059 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb | 8060 | } |
71dfc51f | 8061 | |
141719a8 JM |
8062 | equate_decl_number_to_die (node, parm_die); |
8063 | if (! DECL_ABSTRACT (node)) | |
a94dbf2c | 8064 | add_location_or_const_value_attribute (parm_die, node); |
71dfc51f | 8065 | |
a3f97cbb JW |
8066 | break; |
8067 | ||
a3f97cbb | 8068 | case 't': |
71dfc51f | 8069 | /* We were called with some kind of a ..._TYPE node. */ |
a3f97cbb JW |
8070 | add_type_attribute (parm_die, node, 0, 0, context_die); |
8071 | break; | |
8072 | ||
a3f97cbb JW |
8073 | default: |
8074 | abort (); | |
8075 | } | |
71dfc51f | 8076 | |
a94dbf2c | 8077 | return parm_die; |
a3f97cbb JW |
8078 | } |
8079 | ||
8080 | /* Generate a special type of DIE used as a stand-in for a trailing ellipsis | |
8081 | at the end of an (ANSI prototyped) formal parameters list. */ | |
71dfc51f | 8082 | |
a3f97cbb JW |
8083 | static void |
8084 | gen_unspecified_parameters_die (decl_or_type, context_die) | |
8085 | register tree decl_or_type; | |
8086 | register dw_die_ref context_die; | |
8087 | { | |
487a6e06 | 8088 | new_die (DW_TAG_unspecified_parameters, context_die); |
a3f97cbb JW |
8089 | } |
8090 | ||
8091 | /* Generate a list of nameless DW_TAG_formal_parameter DIEs (and perhaps a | |
8092 | DW_TAG_unspecified_parameters DIE) to represent the types of the formal | |
8093 | parameters as specified in some function type specification (except for | |
8094 | those which appear as part of a function *definition*). | |
71dfc51f RK |
8095 | |
8096 | Note we must be careful here to output all of the parameter DIEs before* | |
a3f97cbb JW |
8097 | we output any DIEs needed to represent the types of the formal parameters. |
8098 | This keeps svr4 SDB happy because it (incorrectly) thinks that the first | |
8099 | non-parameter DIE it sees ends the formal parameter list. */ | |
71dfc51f | 8100 | |
a3f97cbb JW |
8101 | static void |
8102 | gen_formal_types_die (function_or_method_type, context_die) | |
8103 | register tree function_or_method_type; | |
8104 | register dw_die_ref context_die; | |
8105 | { | |
8106 | register tree link; | |
8107 | register tree formal_type = NULL; | |
8108 | register tree first_parm_type = TYPE_ARG_TYPES (function_or_method_type); | |
8109 | ||
bdb669cb | 8110 | #if 0 |
a3f97cbb JW |
8111 | /* In the case where we are generating a formal types list for a C++ |
8112 | non-static member function type, skip over the first thing on the | |
8113 | TYPE_ARG_TYPES list because it only represents the type of the hidden | |
8114 | `this pointer'. The debugger should be able to figure out (without | |
8115 | being explicitly told) that this non-static member function type takes a | |
8116 | `this pointer' and should be able to figure what the type of that hidden | |
8117 | parameter is from the DW_AT_member attribute of the parent | |
8118 | DW_TAG_subroutine_type DIE. */ | |
8119 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE) | |
8120 | first_parm_type = TREE_CHAIN (first_parm_type); | |
bdb669cb | 8121 | #endif |
a3f97cbb JW |
8122 | |
8123 | /* Make our first pass over the list of formal parameter types and output a | |
8124 | DW_TAG_formal_parameter DIE for each one. */ | |
8125 | for (link = first_parm_type; link; link = TREE_CHAIN (link)) | |
8126 | { | |
a94dbf2c JM |
8127 | register dw_die_ref parm_die; |
8128 | ||
a3f97cbb JW |
8129 | formal_type = TREE_VALUE (link); |
8130 | if (formal_type == void_type_node) | |
8131 | break; | |
8132 | ||
8133 | /* Output a (nameless) DIE to represent the formal parameter itself. */ | |
a94dbf2c JM |
8134 | parm_die = gen_formal_parameter_die (formal_type, context_die); |
8135 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE | |
8136 | && link == first_parm_type) | |
8137 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
a3f97cbb JW |
8138 | } |
8139 | ||
8140 | /* If this function type has an ellipsis, add a | |
8141 | DW_TAG_unspecified_parameters DIE to the end of the parameter list. */ | |
8142 | if (formal_type != void_type_node) | |
8143 | gen_unspecified_parameters_die (function_or_method_type, context_die); | |
8144 | ||
8145 | /* Make our second (and final) pass over the list of formal parameter types | |
8146 | and output DIEs to represent those types (as necessary). */ | |
8147 | for (link = TYPE_ARG_TYPES (function_or_method_type); | |
8148 | link; | |
8149 | link = TREE_CHAIN (link)) | |
8150 | { | |
8151 | formal_type = TREE_VALUE (link); | |
8152 | if (formal_type == void_type_node) | |
8153 | break; | |
8154 | ||
b50c02f9 | 8155 | gen_type_die (formal_type, context_die); |
a3f97cbb JW |
8156 | } |
8157 | } | |
8158 | ||
8159 | /* Generate a DIE to represent a declared function (either file-scope or | |
8160 | block-local). */ | |
71dfc51f | 8161 | |
a3f97cbb JW |
8162 | static void |
8163 | gen_subprogram_die (decl, context_die) | |
8164 | register tree decl; | |
8165 | register dw_die_ref context_die; | |
8166 | { | |
8167 | char label_id[MAX_ARTIFICIAL_LABEL_BYTES]; | |
8168 | register tree origin = decl_ultimate_origin (decl); | |
4b674448 | 8169 | register dw_die_ref subr_die; |
b1ccbc24 | 8170 | register rtx fp_reg; |
a3f97cbb JW |
8171 | register tree fn_arg_types; |
8172 | register tree outer_scope; | |
a94dbf2c | 8173 | register dw_die_ref old_die = lookup_decl_die (decl); |
9c6cd30e JM |
8174 | register int declaration |
8175 | = (current_function_decl != decl | |
8176 | || (context_die | |
8177 | && (context_die->die_tag == DW_TAG_structure_type | |
8178 | || context_die->die_tag == DW_TAG_union_type))); | |
a3f97cbb | 8179 | |
a3f97cbb JW |
8180 | if (origin != NULL) |
8181 | { | |
4b674448 | 8182 | subr_die = new_die (DW_TAG_subprogram, context_die); |
a3f97cbb JW |
8183 | add_abstract_origin_attribute (subr_die, origin); |
8184 | } | |
4401bf24 JL |
8185 | else if (old_die && DECL_ABSTRACT (decl) |
8186 | && get_AT_unsigned (old_die, DW_AT_inline)) | |
8187 | { | |
8188 | /* This must be a redefinition of an extern inline function. | |
8189 | We can just reuse the old die here. */ | |
8190 | subr_die = old_die; | |
8191 | ||
8192 | /* Clear out the inlined attribute and parm types. */ | |
8193 | remove_AT (subr_die, DW_AT_inline); | |
8194 | remove_children (subr_die); | |
8195 | } | |
bdb669cb JM |
8196 | else if (old_die) |
8197 | { | |
4b674448 JM |
8198 | register unsigned file_index |
8199 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
a94dbf2c | 8200 | |
3a88cbd1 | 8201 | if (get_AT_flag (old_die, DW_AT_declaration) != 1) |
b75ab88b NC |
8202 | { |
8203 | /* ??? This can happen if there is a bug in the program, for | |
8204 | instance, if it has duplicate function definitions. Ideally, | |
8205 | we should detect this case and ignore it. For now, if we have | |
8206 | already reported an error, any error at all, then assume that | |
8207 | we got here because of a input error, not a dwarf2 bug. */ | |
8208 | extern int errorcount; | |
8209 | if (errorcount) | |
8210 | return; | |
8211 | abort (); | |
8212 | } | |
4b674448 JM |
8213 | |
8214 | /* If the definition comes from the same place as the declaration, | |
a94dbf2c JM |
8215 | maybe use the old DIE. We always want the DIE for this function |
8216 | that has the *_pc attributes to be under comp_unit_die so the | |
8217 | debugger can find it. For inlines, that is the concrete instance, | |
8218 | so we can use the old DIE here. For non-inline methods, we want a | |
8219 | specification DIE at toplevel, so we need a new DIE. For local | |
8220 | class methods, this does not apply. */ | |
8221 | if ((DECL_ABSTRACT (decl) || old_die->die_parent == comp_unit_die | |
8222 | || context_die == NULL) | |
8223 | && get_AT_unsigned (old_die, DW_AT_decl_file) == file_index | |
4b674448 JM |
8224 | && (get_AT_unsigned (old_die, DW_AT_decl_line) |
8225 | == DECL_SOURCE_LINE (decl))) | |
bdb669cb | 8226 | { |
4b674448 JM |
8227 | subr_die = old_die; |
8228 | ||
8229 | /* Clear out the declaration attribute and the parm types. */ | |
8230 | remove_AT (subr_die, DW_AT_declaration); | |
8231 | remove_children (subr_die); | |
8232 | } | |
8233 | else | |
8234 | { | |
8235 | subr_die = new_die (DW_TAG_subprogram, context_die); | |
8236 | add_AT_die_ref (subr_die, DW_AT_specification, old_die); | |
bdb669cb JM |
8237 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
8238 | add_AT_unsigned (subr_die, DW_AT_decl_file, file_index); | |
8239 | if (get_AT_unsigned (old_die, DW_AT_decl_line) | |
8240 | != DECL_SOURCE_LINE (decl)) | |
8241 | add_AT_unsigned | |
8242 | (subr_die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
8243 | } | |
8244 | } | |
a3f97cbb JW |
8245 | else |
8246 | { | |
4edb7b60 JM |
8247 | register dw_die_ref scope_die; |
8248 | ||
8249 | if (DECL_CONTEXT (decl)) | |
8250 | scope_die = scope_die_for (decl, context_die); | |
8251 | else | |
8252 | /* Don't put block extern declarations under comp_unit_die. */ | |
8253 | scope_die = context_die; | |
8254 | ||
8255 | subr_die = new_die (DW_TAG_subprogram, scope_die); | |
8256 | ||
273dbe67 JM |
8257 | if (TREE_PUBLIC (decl)) |
8258 | add_AT_flag (subr_die, DW_AT_external, 1); | |
71dfc51f | 8259 | |
a3f97cbb | 8260 | add_name_and_src_coords_attributes (subr_die, decl); |
4927276d JM |
8261 | if (debug_info_level > DINFO_LEVEL_TERSE) |
8262 | { | |
8263 | register tree type = TREE_TYPE (decl); | |
71dfc51f | 8264 | |
4927276d JM |
8265 | add_prototyped_attribute (subr_die, type); |
8266 | add_type_attribute (subr_die, TREE_TYPE (type), 0, 0, context_die); | |
8267 | } | |
71dfc51f | 8268 | |
a3f97cbb | 8269 | add_pure_or_virtual_attribute (subr_die, decl); |
273dbe67 JM |
8270 | if (DECL_ARTIFICIAL (decl)) |
8271 | add_AT_flag (subr_die, DW_AT_artificial, 1); | |
a94dbf2c JM |
8272 | if (TREE_PROTECTED (decl)) |
8273 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_protected); | |
8274 | else if (TREE_PRIVATE (decl)) | |
8275 | add_AT_unsigned (subr_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 8276 | } |
4edb7b60 | 8277 | |
a94dbf2c JM |
8278 | if (declaration) |
8279 | { | |
8280 | add_AT_flag (subr_die, DW_AT_declaration, 1); | |
8281 | ||
8282 | /* The first time we see a member function, it is in the context of | |
8283 | the class to which it belongs. We make sure of this by emitting | |
8284 | the class first. The next time is the definition, which is | |
8285 | handled above. The two may come from the same source text. */ | |
f6c74b02 | 8286 | if (DECL_CONTEXT (decl)) |
a94dbf2c JM |
8287 | equate_decl_number_to_die (decl, subr_die); |
8288 | } | |
8289 | else if (DECL_ABSTRACT (decl)) | |
a3f97cbb | 8290 | { |
4401bf24 JL |
8291 | /* ??? Checking DECL_DEFER_OUTPUT is correct for static inline functions, |
8292 | but not for extern inline functions. We can't get this completely | |
8293 | correct because information about whether the function was declared | |
8294 | inline is not saved anywhere. */ | |
61b32c02 JM |
8295 | if (DECL_DEFER_OUTPUT (decl)) |
8296 | { | |
8297 | if (DECL_INLINE (decl)) | |
8298 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_inlined); | |
8299 | else | |
8300 | add_AT_unsigned (subr_die, DW_AT_inline, | |
8301 | DW_INL_declared_not_inlined); | |
8302 | } | |
8303 | else if (DECL_INLINE (decl)) | |
8304 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_inlined); | |
8305 | else | |
8306 | abort (); | |
8307 | ||
a3f97cbb JW |
8308 | equate_decl_number_to_die (decl, subr_die); |
8309 | } | |
8310 | else if (!DECL_EXTERNAL (decl)) | |
8311 | { | |
71dfc51f | 8312 | if (origin == NULL_TREE) |
ba7b35df | 8313 | equate_decl_number_to_die (decl, subr_die); |
71dfc51f | 8314 | |
5c90448c JM |
8315 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_BEGIN_LABEL, |
8316 | current_funcdef_number); | |
7d4440be | 8317 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label_id); |
5c90448c JM |
8318 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_END_LABEL, |
8319 | current_funcdef_number); | |
a3f97cbb JW |
8320 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label_id); |
8321 | ||
d291dd49 JM |
8322 | add_pubname (decl, subr_die); |
8323 | add_arange (decl, subr_die); | |
8324 | ||
a3f97cbb | 8325 | #ifdef MIPS_DEBUGGING_INFO |
a3f97cbb JW |
8326 | /* Add a reference to the FDE for this routine. */ |
8327 | add_AT_fde_ref (subr_die, DW_AT_MIPS_fde, current_funcdef_fde); | |
8328 | #endif | |
8329 | ||
810429b7 JM |
8330 | /* Define the "frame base" location for this routine. We use the |
8331 | frame pointer or stack pointer registers, since the RTL for local | |
8332 | variables is relative to one of them. */ | |
b1ccbc24 RK |
8333 | fp_reg |
8334 | = frame_pointer_needed ? hard_frame_pointer_rtx : stack_pointer_rtx; | |
8335 | add_AT_loc (subr_die, DW_AT_frame_base, reg_loc_descriptor (fp_reg)); | |
a3f97cbb | 8336 | |
ef76d03b JW |
8337 | #if 0 |
8338 | /* ??? This fails for nested inline functions, because context_display | |
8339 | is not part of the state saved/restored for inline functions. */ | |
88dad228 | 8340 | if (current_function_needs_context) |
ef76d03b JW |
8341 | add_AT_location_description (subr_die, DW_AT_static_link, |
8342 | lookup_static_chain (decl)); | |
8343 | #endif | |
a3f97cbb JW |
8344 | } |
8345 | ||
8346 | /* Now output descriptions of the arguments for this function. This gets | |
8347 | (unnecessarily?) complex because of the fact that the DECL_ARGUMENT list | |
8348 | for a FUNCTION_DECL doesn't indicate cases where there was a trailing | |
8349 | `...' at the end of the formal parameter list. In order to find out if | |
8350 | there was a trailing ellipsis or not, we must instead look at the type | |
8351 | associated with the FUNCTION_DECL. This will be a node of type | |
8352 | FUNCTION_TYPE. If the chain of type nodes hanging off of this | |
8353 | FUNCTION_TYPE node ends with a void_type_node then there should *not* be | |
8354 | an ellipsis at the end. */ | |
ab72d377 | 8355 | push_decl_scope (decl); |
71dfc51f | 8356 | |
a3f97cbb JW |
8357 | /* In the case where we are describing a mere function declaration, all we |
8358 | need to do here (and all we *can* do here) is to describe the *types* of | |
8359 | its formal parameters. */ | |
4927276d | 8360 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
71dfc51f | 8361 | ; |
4edb7b60 JM |
8362 | else if (declaration) |
8363 | gen_formal_types_die (TREE_TYPE (decl), subr_die); | |
a3f97cbb JW |
8364 | else |
8365 | { | |
8366 | /* Generate DIEs to represent all known formal parameters */ | |
8367 | register tree arg_decls = DECL_ARGUMENTS (decl); | |
8368 | register tree parm; | |
8369 | ||
8370 | /* When generating DIEs, generate the unspecified_parameters DIE | |
8371 | instead if we come across the arg "__builtin_va_alist" */ | |
8372 | for (parm = arg_decls; parm; parm = TREE_CHAIN (parm)) | |
71dfc51f RK |
8373 | if (TREE_CODE (parm) == PARM_DECL) |
8374 | { | |
db3cf6fb MS |
8375 | if (DECL_NAME (parm) |
8376 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
8377 | "__builtin_va_alist")) | |
71dfc51f RK |
8378 | gen_unspecified_parameters_die (parm, subr_die); |
8379 | else | |
8380 | gen_decl_die (parm, subr_die); | |
8381 | } | |
a3f97cbb JW |
8382 | |
8383 | /* Decide whether we need a unspecified_parameters DIE at the end. | |
8384 | There are 2 more cases to do this for: 1) the ansi ... declaration - | |
8385 | this is detectable when the end of the arg list is not a | |
8386 | void_type_node 2) an unprototyped function declaration (not a | |
8387 | definition). This just means that we have no info about the | |
8388 | parameters at all. */ | |
8389 | fn_arg_types = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
71dfc51f | 8390 | if (fn_arg_types != NULL) |
a3f97cbb JW |
8391 | { |
8392 | /* this is the prototyped case, check for ... */ | |
8393 | if (TREE_VALUE (tree_last (fn_arg_types)) != void_type_node) | |
71dfc51f | 8394 | gen_unspecified_parameters_die (decl, subr_die); |
a3f97cbb | 8395 | } |
71dfc51f RK |
8396 | else if (DECL_INITIAL (decl) == NULL_TREE) |
8397 | gen_unspecified_parameters_die (decl, subr_die); | |
a3f97cbb JW |
8398 | } |
8399 | ||
8400 | /* Output Dwarf info for all of the stuff within the body of the function | |
8401 | (if it has one - it may be just a declaration). */ | |
8402 | outer_scope = DECL_INITIAL (decl); | |
8403 | ||
d7248bff JM |
8404 | /* Note that here, `outer_scope' is a pointer to the outermost BLOCK |
8405 | node created to represent a function. This outermost BLOCK actually | |
8406 | represents the outermost binding contour for the function, i.e. the | |
8407 | contour in which the function's formal parameters and labels get | |
8408 | declared. Curiously, it appears that the front end doesn't actually | |
8409 | put the PARM_DECL nodes for the current function onto the BLOCK_VARS | |
8410 | list for this outer scope. (They are strung off of the DECL_ARGUMENTS | |
8411 | list for the function instead.) The BLOCK_VARS list for the | |
8412 | `outer_scope' does provide us with a list of the LABEL_DECL nodes for | |
8413 | the function however, and we output DWARF info for those in | |
8414 | decls_for_scope. Just within the `outer_scope' there will be a BLOCK | |
8415 | node representing the function's outermost pair of curly braces, and | |
8416 | any blocks used for the base and member initializers of a C++ | |
8417 | constructor function. */ | |
4edb7b60 | 8418 | if (! declaration && TREE_CODE (outer_scope) != ERROR_MARK) |
7e23cb16 JM |
8419 | { |
8420 | current_function_has_inlines = 0; | |
8421 | decls_for_scope (outer_scope, subr_die, 0); | |
71dfc51f | 8422 | |
ce61cc73 | 8423 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
7e23cb16 JM |
8424 | if (current_function_has_inlines) |
8425 | { | |
8426 | add_AT_flag (subr_die, DW_AT_MIPS_has_inlines, 1); | |
8427 | if (! comp_unit_has_inlines) | |
8428 | { | |
8429 | add_AT_flag (comp_unit_die, DW_AT_MIPS_has_inlines, 1); | |
8430 | comp_unit_has_inlines = 1; | |
8431 | } | |
8432 | } | |
8433 | #endif | |
8434 | } | |
71dfc51f | 8435 | |
ab72d377 | 8436 | pop_decl_scope (); |
a3f97cbb JW |
8437 | } |
8438 | ||
8439 | /* Generate a DIE to represent a declared data object. */ | |
71dfc51f | 8440 | |
a3f97cbb JW |
8441 | static void |
8442 | gen_variable_die (decl, context_die) | |
8443 | register tree decl; | |
8444 | register dw_die_ref context_die; | |
8445 | { | |
8446 | register tree origin = decl_ultimate_origin (decl); | |
8447 | register dw_die_ref var_die = new_die (DW_TAG_variable, context_die); | |
71dfc51f | 8448 | |
bdb669cb | 8449 | dw_die_ref old_die = lookup_decl_die (decl); |
4edb7b60 JM |
8450 | int declaration |
8451 | = (DECL_EXTERNAL (decl) | |
a94dbf2c JM |
8452 | || current_function_decl != decl_function_context (decl) |
8453 | || context_die->die_tag == DW_TAG_structure_type | |
8454 | || context_die->die_tag == DW_TAG_union_type); | |
4edb7b60 | 8455 | |
a3f97cbb | 8456 | if (origin != NULL) |
71dfc51f | 8457 | add_abstract_origin_attribute (var_die, origin); |
f76b8156 JW |
8458 | /* Loop unrolling can create multiple blocks that refer to the same |
8459 | static variable, so we must test for the DW_AT_declaration flag. */ | |
8460 | /* ??? Loop unrolling/reorder_blocks should perhaps be rewritten to | |
8461 | copy decls and set the DECL_ABSTRACT flag on them instead of | |
8462 | sharing them. */ | |
8463 | else if (old_die && TREE_STATIC (decl) | |
8464 | && get_AT_flag (old_die, DW_AT_declaration) == 1) | |
bdb669cb | 8465 | { |
f76b8156 | 8466 | /* ??? This is an instantiation of a C++ class level static. */ |
bdb669cb JM |
8467 | add_AT_die_ref (var_die, DW_AT_specification, old_die); |
8468 | if (DECL_NAME (decl)) | |
8469 | { | |
8470 | register unsigned file_index | |
8471 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
71dfc51f | 8472 | |
bdb669cb JM |
8473 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
8474 | add_AT_unsigned (var_die, DW_AT_decl_file, file_index); | |
71dfc51f | 8475 | |
bdb669cb JM |
8476 | if (get_AT_unsigned (old_die, DW_AT_decl_line) |
8477 | != DECL_SOURCE_LINE (decl)) | |
71dfc51f RK |
8478 | |
8479 | add_AT_unsigned (var_die, DW_AT_decl_line, | |
8480 | DECL_SOURCE_LINE (decl)); | |
bdb669cb JM |
8481 | } |
8482 | } | |
a3f97cbb JW |
8483 | else |
8484 | { | |
8485 | add_name_and_src_coords_attributes (var_die, decl); | |
a3f97cbb JW |
8486 | add_type_attribute (var_die, TREE_TYPE (decl), |
8487 | TREE_READONLY (decl), | |
8488 | TREE_THIS_VOLATILE (decl), context_die); | |
71dfc51f | 8489 | |
273dbe67 JM |
8490 | if (TREE_PUBLIC (decl)) |
8491 | add_AT_flag (var_die, DW_AT_external, 1); | |
71dfc51f | 8492 | |
273dbe67 JM |
8493 | if (DECL_ARTIFICIAL (decl)) |
8494 | add_AT_flag (var_die, DW_AT_artificial, 1); | |
71dfc51f | 8495 | |
a94dbf2c JM |
8496 | if (TREE_PROTECTED (decl)) |
8497 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 8498 | |
a94dbf2c JM |
8499 | else if (TREE_PRIVATE (decl)) |
8500 | add_AT_unsigned (var_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb | 8501 | } |
4edb7b60 JM |
8502 | |
8503 | if (declaration) | |
8504 | add_AT_flag (var_die, DW_AT_declaration, 1); | |
8505 | ||
8506 | if ((declaration && decl_class_context (decl)) || DECL_ABSTRACT (decl)) | |
8507 | equate_decl_number_to_die (decl, var_die); | |
8508 | ||
8509 | if (! declaration && ! DECL_ABSTRACT (decl)) | |
a3f97cbb | 8510 | { |
141719a8 | 8511 | equate_decl_number_to_die (decl, var_die); |
a3f97cbb | 8512 | add_location_or_const_value_attribute (var_die, decl); |
d291dd49 | 8513 | add_pubname (decl, var_die); |
a3f97cbb JW |
8514 | } |
8515 | } | |
8516 | ||
8517 | /* Generate a DIE to represent a label identifier. */ | |
71dfc51f | 8518 | |
a3f97cbb JW |
8519 | static void |
8520 | gen_label_die (decl, context_die) | |
8521 | register tree decl; | |
8522 | register dw_die_ref context_die; | |
8523 | { | |
8524 | register tree origin = decl_ultimate_origin (decl); | |
8525 | register dw_die_ref lbl_die = new_die (DW_TAG_label, context_die); | |
8526 | register rtx insn; | |
8527 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
5c90448c | 8528 | char label2[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 8529 | |
a3f97cbb | 8530 | if (origin != NULL) |
71dfc51f | 8531 | add_abstract_origin_attribute (lbl_die, origin); |
a3f97cbb | 8532 | else |
71dfc51f RK |
8533 | add_name_and_src_coords_attributes (lbl_die, decl); |
8534 | ||
a3f97cbb | 8535 | if (DECL_ABSTRACT (decl)) |
71dfc51f | 8536 | equate_decl_number_to_die (decl, lbl_die); |
a3f97cbb JW |
8537 | else |
8538 | { | |
8539 | insn = DECL_RTL (decl); | |
8540 | if (GET_CODE (insn) == CODE_LABEL) | |
8541 | { | |
8542 | /* When optimization is enabled (via -O) some parts of the compiler | |
8543 | (e.g. jump.c and cse.c) may try to delete CODE_LABEL insns which | |
8544 | represent source-level labels which were explicitly declared by | |
8545 | the user. This really shouldn't be happening though, so catch | |
8546 | it if it ever does happen. */ | |
8547 | if (INSN_DELETED_P (insn)) | |
71dfc51f RK |
8548 | abort (); |
8549 | ||
5c90448c JM |
8550 | sprintf (label2, INSN_LABEL_FMT, current_funcdef_number); |
8551 | ASM_GENERATE_INTERNAL_LABEL (label, label2, | |
8552 | (unsigned) INSN_UID (insn)); | |
a3f97cbb JW |
8553 | add_AT_lbl_id (lbl_die, DW_AT_low_pc, label); |
8554 | } | |
8555 | } | |
8556 | } | |
8557 | ||
8558 | /* Generate a DIE for a lexical block. */ | |
71dfc51f | 8559 | |
a3f97cbb | 8560 | static void |
d7248bff | 8561 | gen_lexical_block_die (stmt, context_die, depth) |
a3f97cbb JW |
8562 | register tree stmt; |
8563 | register dw_die_ref context_die; | |
d7248bff | 8564 | int depth; |
a3f97cbb JW |
8565 | { |
8566 | register dw_die_ref stmt_die = new_die (DW_TAG_lexical_block, context_die); | |
8567 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f RK |
8568 | |
8569 | if (! BLOCK_ABSTRACT (stmt)) | |
a3f97cbb | 8570 | { |
5c90448c JM |
8571 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
8572 | next_block_number); | |
a3f97cbb | 8573 | add_AT_lbl_id (stmt_die, DW_AT_low_pc, label); |
5c90448c | 8574 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
a3f97cbb JW |
8575 | add_AT_lbl_id (stmt_die, DW_AT_high_pc, label); |
8576 | } | |
71dfc51f | 8577 | |
7d4440be | 8578 | push_decl_scope (stmt); |
d7248bff | 8579 | decls_for_scope (stmt, stmt_die, depth); |
7d4440be | 8580 | pop_decl_scope (); |
a3f97cbb JW |
8581 | } |
8582 | ||
8583 | /* Generate a DIE for an inlined subprogram. */ | |
71dfc51f | 8584 | |
a3f97cbb | 8585 | static void |
d7248bff | 8586 | gen_inlined_subroutine_die (stmt, context_die, depth) |
a3f97cbb JW |
8587 | register tree stmt; |
8588 | register dw_die_ref context_die; | |
d7248bff | 8589 | int depth; |
a3f97cbb | 8590 | { |
71dfc51f | 8591 | if (! BLOCK_ABSTRACT (stmt)) |
a3f97cbb | 8592 | { |
71dfc51f RK |
8593 | register dw_die_ref subr_die |
8594 | = new_die (DW_TAG_inlined_subroutine, context_die); | |
ab72d377 | 8595 | register tree decl = block_ultimate_origin (stmt); |
d7248bff | 8596 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
71dfc51f | 8597 | |
ab72d377 | 8598 | add_abstract_origin_attribute (subr_die, decl); |
5c90448c JM |
8599 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
8600 | next_block_number); | |
a3f97cbb | 8601 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label); |
5c90448c | 8602 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
a3f97cbb | 8603 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label); |
ab72d377 | 8604 | push_decl_scope (decl); |
d7248bff | 8605 | decls_for_scope (stmt, subr_die, depth); |
ab72d377 | 8606 | pop_decl_scope (); |
7e23cb16 | 8607 | current_function_has_inlines = 1; |
a3f97cbb | 8608 | } |
a3f97cbb JW |
8609 | } |
8610 | ||
8611 | /* Generate a DIE for a field in a record, or structure. */ | |
71dfc51f | 8612 | |
a3f97cbb JW |
8613 | static void |
8614 | gen_field_die (decl, context_die) | |
8615 | register tree decl; | |
8616 | register dw_die_ref context_die; | |
8617 | { | |
8618 | register dw_die_ref decl_die = new_die (DW_TAG_member, context_die); | |
71dfc51f | 8619 | |
a3f97cbb | 8620 | add_name_and_src_coords_attributes (decl_die, decl); |
a3f97cbb JW |
8621 | add_type_attribute (decl_die, member_declared_type (decl), |
8622 | TREE_READONLY (decl), TREE_THIS_VOLATILE (decl), | |
8623 | context_die); | |
71dfc51f | 8624 | |
a3f97cbb JW |
8625 | /* If this is a bit field... */ |
8626 | if (DECL_BIT_FIELD_TYPE (decl)) | |
8627 | { | |
8628 | add_byte_size_attribute (decl_die, decl); | |
8629 | add_bit_size_attribute (decl_die, decl); | |
8630 | add_bit_offset_attribute (decl_die, decl); | |
8631 | } | |
71dfc51f | 8632 | |
a94dbf2c JM |
8633 | if (TREE_CODE (DECL_FIELD_CONTEXT (decl)) != UNION_TYPE) |
8634 | add_data_member_location_attribute (decl_die, decl); | |
71dfc51f | 8635 | |
273dbe67 JM |
8636 | if (DECL_ARTIFICIAL (decl)) |
8637 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
71dfc51f | 8638 | |
a94dbf2c JM |
8639 | if (TREE_PROTECTED (decl)) |
8640 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_protected); | |
71dfc51f | 8641 | |
a94dbf2c JM |
8642 | else if (TREE_PRIVATE (decl)) |
8643 | add_AT_unsigned (decl_die, DW_AT_accessibility, DW_ACCESS_private); | |
a3f97cbb JW |
8644 | } |
8645 | ||
ab72d377 JM |
8646 | #if 0 |
8647 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. | |
8648 | Use modified_type_die instead. | |
a3f97cbb JW |
8649 | We keep this code here just in case these types of DIEs may be needed to |
8650 | represent certain things in other languages (e.g. Pascal) someday. */ | |
8651 | static void | |
8652 | gen_pointer_type_die (type, context_die) | |
8653 | register tree type; | |
8654 | register dw_die_ref context_die; | |
8655 | { | |
71dfc51f RK |
8656 | register dw_die_ref ptr_die |
8657 | = new_die (DW_TAG_pointer_type, scope_die_for (type, context_die)); | |
8658 | ||
a3f97cbb | 8659 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 8660 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 8661 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb JW |
8662 | } |
8663 | ||
ab72d377 JM |
8664 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. |
8665 | Use modified_type_die instead. | |
a3f97cbb JW |
8666 | We keep this code here just in case these types of DIEs may be needed to |
8667 | represent certain things in other languages (e.g. Pascal) someday. */ | |
8668 | static void | |
8669 | gen_reference_type_die (type, context_die) | |
8670 | register tree type; | |
8671 | register dw_die_ref context_die; | |
8672 | { | |
71dfc51f RK |
8673 | register dw_die_ref ref_die |
8674 | = new_die (DW_TAG_reference_type, scope_die_for (type, context_die)); | |
8675 | ||
a3f97cbb | 8676 | equate_type_number_to_die (type, ref_die); |
a3f97cbb | 8677 | add_type_attribute (ref_die, TREE_TYPE (type), 0, 0, context_die); |
ab72d377 | 8678 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
a3f97cbb | 8679 | } |
ab72d377 | 8680 | #endif |
a3f97cbb JW |
8681 | |
8682 | /* Generate a DIE for a pointer to a member type. */ | |
8683 | static void | |
8684 | gen_ptr_to_mbr_type_die (type, context_die) | |
8685 | register tree type; | |
8686 | register dw_die_ref context_die; | |
8687 | { | |
71dfc51f RK |
8688 | register dw_die_ref ptr_die |
8689 | = new_die (DW_TAG_ptr_to_member_type, scope_die_for (type, context_die)); | |
8690 | ||
a3f97cbb | 8691 | equate_type_number_to_die (type, ptr_die); |
a3f97cbb | 8692 | add_AT_die_ref (ptr_die, DW_AT_containing_type, |
bdb669cb | 8693 | lookup_type_die (TYPE_OFFSET_BASETYPE (type))); |
a3f97cbb JW |
8694 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
8695 | } | |
8696 | ||
8697 | /* Generate the DIE for the compilation unit. */ | |
71dfc51f | 8698 | |
a3f97cbb JW |
8699 | static void |
8700 | gen_compile_unit_die (main_input_filename) | |
8701 | register char *main_input_filename; | |
8702 | { | |
8703 | char producer[250]; | |
a3f97cbb JW |
8704 | char *wd = getpwd (); |
8705 | ||
8706 | comp_unit_die = new_die (DW_TAG_compile_unit, NULL); | |
bdb669cb JM |
8707 | add_name_attribute (comp_unit_die, main_input_filename); |
8708 | ||
71dfc51f RK |
8709 | if (wd != NULL) |
8710 | add_AT_string (comp_unit_die, DW_AT_comp_dir, wd); | |
a3f97cbb JW |
8711 | |
8712 | sprintf (producer, "%s %s", language_string, version_string); | |
8713 | ||
8714 | #ifdef MIPS_DEBUGGING_INFO | |
8715 | /* The MIPS/SGI compilers place the 'cc' command line options in the producer | |
8716 | string. The SGI debugger looks for -g, -g1, -g2, or -g3; if they do | |
8717 | not appear in the producer string, the debugger reaches the conclusion | |
8718 | that the object file is stripped and has no debugging information. | |
8719 | To get the MIPS/SGI debugger to believe that there is debugging | |
8720 | information in the object file, we add a -g to the producer string. */ | |
4927276d JM |
8721 | if (debug_info_level > DINFO_LEVEL_TERSE) |
8722 | strcat (producer, " -g"); | |
a3f97cbb JW |
8723 | #endif |
8724 | ||
8725 | add_AT_string (comp_unit_die, DW_AT_producer, producer); | |
a9d38797 | 8726 | |
a3f97cbb | 8727 | if (strcmp (language_string, "GNU C++") == 0) |
a9d38797 | 8728 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C_plus_plus); |
71dfc51f | 8729 | |
a3f97cbb | 8730 | else if (strcmp (language_string, "GNU Ada") == 0) |
a9d38797 | 8731 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Ada83); |
71dfc51f | 8732 | |
a9d38797 JM |
8733 | else if (strcmp (language_string, "GNU F77") == 0) |
8734 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Fortran77); | |
71dfc51f | 8735 | |
bc28c45b RK |
8736 | else if (strcmp (language_string, "GNU Pascal") == 0) |
8737 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Pascal83); | |
8738 | ||
a3f97cbb | 8739 | else if (flag_traditional) |
a9d38797 | 8740 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C); |
71dfc51f | 8741 | |
a3f97cbb | 8742 | else |
a9d38797 JM |
8743 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C89); |
8744 | ||
8745 | #if 0 /* unimplemented */ | |
e90b62db | 8746 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
a9d38797 JM |
8747 | add_AT_unsigned (comp_unit_die, DW_AT_macro_info, 0); |
8748 | #endif | |
a3f97cbb JW |
8749 | } |
8750 | ||
8751 | /* Generate a DIE for a string type. */ | |
71dfc51f | 8752 | |
a3f97cbb JW |
8753 | static void |
8754 | gen_string_type_die (type, context_die) | |
8755 | register tree type; | |
8756 | register dw_die_ref context_die; | |
8757 | { | |
71dfc51f RK |
8758 | register dw_die_ref type_die |
8759 | = new_die (DW_TAG_string_type, scope_die_for (type, context_die)); | |
8760 | ||
bdb669cb | 8761 | equate_type_number_to_die (type, type_die); |
a3f97cbb JW |
8762 | |
8763 | /* Fudge the string length attribute for now. */ | |
71dfc51f | 8764 | |
a3f97cbb | 8765 | /* TODO: add string length info. |
71dfc51f | 8766 | string_length_attribute (TYPE_MAX_VALUE (TYPE_DOMAIN (type))); |
a3f97cbb JW |
8767 | bound_representation (upper_bound, 0, 'u'); */ |
8768 | } | |
8769 | ||
61b32c02 | 8770 | /* Generate the DIE for a base class. */ |
71dfc51f | 8771 | |
61b32c02 JM |
8772 | static void |
8773 | gen_inheritance_die (binfo, context_die) | |
8774 | register tree binfo; | |
8775 | register dw_die_ref context_die; | |
8776 | { | |
8777 | dw_die_ref die = new_die (DW_TAG_inheritance, context_die); | |
71dfc51f | 8778 | |
61b32c02 JM |
8779 | add_type_attribute (die, BINFO_TYPE (binfo), 0, 0, context_die); |
8780 | add_data_member_location_attribute (die, binfo); | |
71dfc51f | 8781 | |
61b32c02 JM |
8782 | if (TREE_VIA_VIRTUAL (binfo)) |
8783 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); | |
8784 | if (TREE_VIA_PUBLIC (binfo)) | |
8785 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_public); | |
8786 | else if (TREE_VIA_PROTECTED (binfo)) | |
8787 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_protected); | |
8788 | } | |
8789 | ||
956d6950 | 8790 | /* Generate a DIE for a class member. */ |
71dfc51f | 8791 | |
a3f97cbb JW |
8792 | static void |
8793 | gen_member_die (type, context_die) | |
8794 | register tree type; | |
8795 | register dw_die_ref context_die; | |
8796 | { | |
61b32c02 | 8797 | register tree member; |
71dfc51f | 8798 | |
a3f97cbb JW |
8799 | /* If this is not an incomplete type, output descriptions of each of its |
8800 | members. Note that as we output the DIEs necessary to represent the | |
8801 | members of this record or union type, we will also be trying to output | |
8802 | DIEs to represent the *types* of those members. However the `type' | |
8803 | function (above) will specifically avoid generating type DIEs for member | |
8804 | types *within* the list of member DIEs for this (containing) type execpt | |
8805 | for those types (of members) which are explicitly marked as also being | |
8806 | members of this (containing) type themselves. The g++ front- end can | |
8807 | force any given type to be treated as a member of some other | |
8808 | (containing) type by setting the TYPE_CONTEXT of the given (member) type | |
8809 | to point to the TREE node representing the appropriate (containing) | |
8810 | type. */ | |
8811 | ||
61b32c02 JM |
8812 | /* First output info about the base classes. */ |
8813 | if (TYPE_BINFO (type) && TYPE_BINFO_BASETYPES (type)) | |
a3f97cbb | 8814 | { |
61b32c02 JM |
8815 | register tree bases = TYPE_BINFO_BASETYPES (type); |
8816 | register int n_bases = TREE_VEC_LENGTH (bases); | |
8817 | register int i; | |
8818 | ||
8819 | for (i = 0; i < n_bases; i++) | |
8820 | gen_inheritance_die (TREE_VEC_ELT (bases, i), context_die); | |
a3f97cbb JW |
8821 | } |
8822 | ||
61b32c02 JM |
8823 | /* Now output info about the data members and type members. */ |
8824 | for (member = TYPE_FIELDS (type); member; member = TREE_CHAIN (member)) | |
8825 | gen_decl_die (member, context_die); | |
8826 | ||
a3f97cbb | 8827 | /* Now output info about the function members (if any). */ |
61b32c02 JM |
8828 | for (member = TYPE_METHODS (type); member; member = TREE_CHAIN (member)) |
8829 | gen_decl_die (member, context_die); | |
a3f97cbb JW |
8830 | } |
8831 | ||
8832 | /* Generate a DIE for a structure or union type. */ | |
71dfc51f | 8833 | |
a3f97cbb | 8834 | static void |
273dbe67 | 8835 | gen_struct_or_union_type_die (type, context_die) |
a3f97cbb | 8836 | register tree type; |
a3f97cbb JW |
8837 | register dw_die_ref context_die; |
8838 | { | |
273dbe67 | 8839 | register dw_die_ref type_die = lookup_type_die (type); |
a082c85a JM |
8840 | register dw_die_ref scope_die = 0; |
8841 | register int nested = 0; | |
273dbe67 JM |
8842 | |
8843 | if (type_die && ! TYPE_SIZE (type)) | |
8844 | return; | |
a082c85a | 8845 | |
71dfc51f | 8846 | if (TYPE_CONTEXT (type) != NULL_TREE |
5f2f160c | 8847 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type))) |
a082c85a JM |
8848 | nested = 1; |
8849 | ||
a94dbf2c | 8850 | scope_die = scope_die_for (type, context_die); |
a082c85a JM |
8851 | |
8852 | if (! type_die || (nested && scope_die == comp_unit_die)) | |
273dbe67 | 8853 | /* First occurrence of type or toplevel definition of nested class. */ |
a3f97cbb | 8854 | { |
273dbe67 | 8855 | register dw_die_ref old_die = type_die; |
71dfc51f | 8856 | |
a3f97cbb JW |
8857 | type_die = new_die (TREE_CODE (type) == RECORD_TYPE |
8858 | ? DW_TAG_structure_type : DW_TAG_union_type, | |
a082c85a | 8859 | scope_die); |
a3f97cbb JW |
8860 | equate_type_number_to_die (type, type_die); |
8861 | add_name_attribute (type_die, type_tag (type)); | |
273dbe67 JM |
8862 | if (old_die) |
8863 | add_AT_die_ref (type_die, DW_AT_specification, old_die); | |
a3f97cbb | 8864 | } |
4b674448 | 8865 | else |
273dbe67 | 8866 | remove_AT (type_die, DW_AT_declaration); |
a3f97cbb | 8867 | |
a94dbf2c JM |
8868 | /* If we're not in the right context to be defining this type, defer to |
8869 | avoid tricky recursion. */ | |
8870 | if (TYPE_SIZE (type) && decl_scope_depth > 0 && scope_die == comp_unit_die) | |
8871 | { | |
8872 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
8873 | pend_type (type); | |
8874 | } | |
a3f97cbb JW |
8875 | /* If this type has been completed, then give it a byte_size attribute and |
8876 | then give a list of members. */ | |
a94dbf2c | 8877 | else if (TYPE_SIZE (type)) |
a3f97cbb JW |
8878 | { |
8879 | /* Prevent infinite recursion in cases where the type of some member of | |
8880 | this type is expressed in terms of this type itself. */ | |
8881 | TREE_ASM_WRITTEN (type) = 1; | |
273dbe67 | 8882 | add_byte_size_attribute (type_die, type); |
e9a25f70 | 8883 | if (TYPE_STUB_DECL (type) != NULL_TREE) |
b2932ae5 | 8884 | add_src_coords_attributes (type_die, TYPE_STUB_DECL (type)); |
71dfc51f | 8885 | |
ef76d03b JW |
8886 | /* If the first reference to this type was as the return type of an |
8887 | inline function, then it may not have a parent. Fix this now. */ | |
8888 | if (type_die->die_parent == NULL) | |
8889 | add_child_die (scope_die, type_die); | |
8890 | ||
273dbe67 JM |
8891 | push_decl_scope (type); |
8892 | gen_member_die (type, type_die); | |
8893 | pop_decl_scope (); | |
71dfc51f | 8894 | |
a94dbf2c JM |
8895 | /* GNU extension: Record what type our vtable lives in. */ |
8896 | if (TYPE_VFIELD (type)) | |
8897 | { | |
8898 | tree vtype = DECL_FCONTEXT (TYPE_VFIELD (type)); | |
71dfc51f | 8899 | |
a94dbf2c JM |
8900 | gen_type_die (vtype, context_die); |
8901 | add_AT_die_ref (type_die, DW_AT_containing_type, | |
8902 | lookup_type_die (vtype)); | |
8903 | } | |
a3f97cbb | 8904 | } |
4b674448 JM |
8905 | else |
8906 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
a3f97cbb JW |
8907 | } |
8908 | ||
8909 | /* Generate a DIE for a subroutine _type_. */ | |
71dfc51f | 8910 | |
a3f97cbb JW |
8911 | static void |
8912 | gen_subroutine_type_die (type, context_die) | |
8913 | register tree type; | |
8914 | register dw_die_ref context_die; | |
8915 | { | |
8916 | register tree return_type = TREE_TYPE (type); | |
71dfc51f RK |
8917 | register dw_die_ref subr_die |
8918 | = new_die (DW_TAG_subroutine_type, scope_die_for (type, context_die)); | |
8919 | ||
a3f97cbb JW |
8920 | equate_type_number_to_die (type, subr_die); |
8921 | add_prototyped_attribute (subr_die, type); | |
a3f97cbb | 8922 | add_type_attribute (subr_die, return_type, 0, 0, context_die); |
a94dbf2c | 8923 | gen_formal_types_die (type, subr_die); |
a3f97cbb JW |
8924 | } |
8925 | ||
8926 | /* Generate a DIE for a type definition */ | |
71dfc51f | 8927 | |
a3f97cbb JW |
8928 | static void |
8929 | gen_typedef_die (decl, context_die) | |
8930 | register tree decl; | |
8931 | register dw_die_ref context_die; | |
8932 | { | |
a3f97cbb | 8933 | register dw_die_ref type_die; |
a94dbf2c JM |
8934 | register tree origin; |
8935 | ||
8936 | if (TREE_ASM_WRITTEN (decl)) | |
8937 | return; | |
8938 | TREE_ASM_WRITTEN (decl) = 1; | |
8939 | ||
ab72d377 | 8940 | type_die = new_die (DW_TAG_typedef, scope_die_for (decl, context_die)); |
a94dbf2c | 8941 | origin = decl_ultimate_origin (decl); |
a3f97cbb | 8942 | if (origin != NULL) |
a94dbf2c | 8943 | add_abstract_origin_attribute (type_die, origin); |
a3f97cbb JW |
8944 | else |
8945 | { | |
a94dbf2c | 8946 | register tree type; |
a3f97cbb | 8947 | add_name_and_src_coords_attributes (type_die, decl); |
a94dbf2c JM |
8948 | if (DECL_ORIGINAL_TYPE (decl)) |
8949 | { | |
8950 | type = DECL_ORIGINAL_TYPE (decl); | |
8951 | equate_type_number_to_die (TREE_TYPE (decl), type_die); | |
8952 | } | |
8953 | else | |
8954 | type = TREE_TYPE (decl); | |
8955 | add_type_attribute (type_die, type, TREE_READONLY (decl), | |
8956 | TREE_THIS_VOLATILE (decl), context_die); | |
a3f97cbb | 8957 | } |
71dfc51f | 8958 | |
a3f97cbb | 8959 | if (DECL_ABSTRACT (decl)) |
a94dbf2c | 8960 | equate_decl_number_to_die (decl, type_die); |
a3f97cbb JW |
8961 | } |
8962 | ||
8963 | /* Generate a type description DIE. */ | |
71dfc51f | 8964 | |
a3f97cbb JW |
8965 | static void |
8966 | gen_type_die (type, context_die) | |
8967 | register tree type; | |
8968 | register dw_die_ref context_die; | |
8969 | { | |
71dfc51f RK |
8970 | if (type == NULL_TREE || type == error_mark_node) |
8971 | return; | |
a3f97cbb | 8972 | |
38e01259 | 8973 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
8974 | this type (i.e. without any const or volatile qualifiers) so get the |
8975 | main variant (i.e. the unqualified version) of this type now. */ | |
8976 | type = type_main_variant (type); | |
8977 | ||
8978 | if (TREE_ASM_WRITTEN (type)) | |
71dfc51f | 8979 | return; |
a3f97cbb | 8980 | |
a94dbf2c JM |
8981 | if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
8982 | && DECL_ORIGINAL_TYPE (TYPE_NAME (type))) | |
8983 | { | |
8984 | TREE_ASM_WRITTEN (type) = 1; | |
8985 | gen_decl_die (TYPE_NAME (type), context_die); | |
8986 | return; | |
8987 | } | |
8988 | ||
a3f97cbb JW |
8989 | switch (TREE_CODE (type)) |
8990 | { | |
8991 | case ERROR_MARK: | |
8992 | break; | |
8993 | ||
8994 | case POINTER_TYPE: | |
8995 | case REFERENCE_TYPE: | |
956d6950 JL |
8996 | /* We must set TREE_ASM_WRITTEN in case this is a recursive type. This |
8997 | ensures that the gen_type_die recursion will terminate even if the | |
8998 | type is recursive. Recursive types are possible in Ada. */ | |
8999 | /* ??? We could perhaps do this for all types before the switch | |
9000 | statement. */ | |
9001 | TREE_ASM_WRITTEN (type) = 1; | |
9002 | ||
a3f97cbb JW |
9003 | /* For these types, all that is required is that we output a DIE (or a |
9004 | set of DIEs) to represent the "basis" type. */ | |
9005 | gen_type_die (TREE_TYPE (type), context_die); | |
9006 | break; | |
9007 | ||
9008 | case OFFSET_TYPE: | |
71dfc51f RK |
9009 | /* This code is used for C++ pointer-to-data-member types. |
9010 | Output a description of the relevant class type. */ | |
a3f97cbb | 9011 | gen_type_die (TYPE_OFFSET_BASETYPE (type), context_die); |
71dfc51f | 9012 | |
a3f97cbb JW |
9013 | /* Output a description of the type of the object pointed to. */ |
9014 | gen_type_die (TREE_TYPE (type), context_die); | |
71dfc51f | 9015 | |
a3f97cbb JW |
9016 | /* Now output a DIE to represent this pointer-to-data-member type |
9017 | itself. */ | |
9018 | gen_ptr_to_mbr_type_die (type, context_die); | |
9019 | break; | |
9020 | ||
9021 | case SET_TYPE: | |
9022 | gen_type_die (TYPE_DOMAIN (type), context_die); | |
9023 | gen_set_type_die (type, context_die); | |
9024 | break; | |
9025 | ||
9026 | case FILE_TYPE: | |
9027 | gen_type_die (TREE_TYPE (type), context_die); | |
9028 | abort (); /* No way to represent these in Dwarf yet! */ | |
9029 | break; | |
9030 | ||
9031 | case FUNCTION_TYPE: | |
9032 | /* Force out return type (in case it wasn't forced out already). */ | |
9033 | gen_type_die (TREE_TYPE (type), context_die); | |
9034 | gen_subroutine_type_die (type, context_die); | |
9035 | break; | |
9036 | ||
9037 | case METHOD_TYPE: | |
9038 | /* Force out return type (in case it wasn't forced out already). */ | |
9039 | gen_type_die (TREE_TYPE (type), context_die); | |
9040 | gen_subroutine_type_die (type, context_die); | |
9041 | break; | |
9042 | ||
9043 | case ARRAY_TYPE: | |
9044 | if (TYPE_STRING_FLAG (type) && TREE_CODE (TREE_TYPE (type)) == CHAR_TYPE) | |
9045 | { | |
9046 | gen_type_die (TREE_TYPE (type), context_die); | |
9047 | gen_string_type_die (type, context_die); | |
9048 | } | |
9049 | else | |
71dfc51f | 9050 | gen_array_type_die (type, context_die); |
a3f97cbb JW |
9051 | break; |
9052 | ||
9053 | case ENUMERAL_TYPE: | |
9054 | case RECORD_TYPE: | |
9055 | case UNION_TYPE: | |
9056 | case QUAL_UNION_TYPE: | |
a082c85a JM |
9057 | /* If this is a nested type whose containing class hasn't been |
9058 | written out yet, writing it out will cover this one, too. */ | |
9059 | if (TYPE_CONTEXT (type) | |
5f2f160c | 9060 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type)) |
a082c85a | 9061 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) |
a94dbf2c JM |
9062 | { |
9063 | gen_type_die (TYPE_CONTEXT (type), context_die); | |
9064 | ||
9065 | if (TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) | |
9066 | return; | |
9067 | ||
9068 | /* If that failed, attach ourselves to the stub. */ | |
9069 | push_decl_scope (TYPE_CONTEXT (type)); | |
9070 | context_die = lookup_type_die (TYPE_CONTEXT (type)); | |
9071 | } | |
9072 | ||
9073 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
273dbe67 | 9074 | gen_enumeration_type_die (type, context_die); |
a3f97cbb | 9075 | else |
273dbe67 | 9076 | gen_struct_or_union_type_die (type, context_die); |
4b674448 | 9077 | |
a94dbf2c | 9078 | if (TYPE_CONTEXT (type) |
5f2f160c | 9079 | && AGGREGATE_TYPE_P (TYPE_CONTEXT (type)) |
a94dbf2c JM |
9080 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) |
9081 | pop_decl_scope (); | |
9082 | ||
4b674448 | 9083 | /* Don't set TREE_ASM_WRITTEN on an incomplete struct; we want to fix |
a082c85a JM |
9084 | it up if it is ever completed. gen_*_type_die will set it for us |
9085 | when appropriate. */ | |
9086 | return; | |
a3f97cbb JW |
9087 | |
9088 | case VOID_TYPE: | |
9089 | case INTEGER_TYPE: | |
9090 | case REAL_TYPE: | |
9091 | case COMPLEX_TYPE: | |
9092 | case BOOLEAN_TYPE: | |
9093 | case CHAR_TYPE: | |
9094 | /* No DIEs needed for fundamental types. */ | |
9095 | break; | |
9096 | ||
9097 | case LANG_TYPE: | |
9098 | /* No Dwarf representation currently defined. */ | |
9099 | break; | |
9100 | ||
9101 | default: | |
9102 | abort (); | |
9103 | } | |
9104 | ||
9105 | TREE_ASM_WRITTEN (type) = 1; | |
9106 | } | |
9107 | ||
9108 | /* Generate a DIE for a tagged type instantiation. */ | |
71dfc51f | 9109 | |
a3f97cbb JW |
9110 | static void |
9111 | gen_tagged_type_instantiation_die (type, context_die) | |
9112 | register tree type; | |
9113 | register dw_die_ref context_die; | |
9114 | { | |
71dfc51f RK |
9115 | if (type == NULL_TREE || type == error_mark_node) |
9116 | return; | |
a3f97cbb | 9117 | |
38e01259 | 9118 | /* We are going to output a DIE to represent the unqualified version of |
a3f97cbb JW |
9119 | this type (i.e. without any const or volatile qualifiers) so make sure |
9120 | that we have the main variant (i.e. the unqualified version) of this | |
9121 | type now. */ | |
3a88cbd1 JL |
9122 | if (type != type_main_variant (type) |
9123 | || !TREE_ASM_WRITTEN (type)) | |
9124 | abort (); | |
a3f97cbb JW |
9125 | |
9126 | switch (TREE_CODE (type)) | |
9127 | { | |
9128 | case ERROR_MARK: | |
9129 | break; | |
9130 | ||
9131 | case ENUMERAL_TYPE: | |
9132 | gen_inlined_enumeration_type_die (type, context_die); | |
9133 | break; | |
9134 | ||
9135 | case RECORD_TYPE: | |
9136 | gen_inlined_structure_type_die (type, context_die); | |
9137 | break; | |
9138 | ||
9139 | case UNION_TYPE: | |
9140 | case QUAL_UNION_TYPE: | |
9141 | gen_inlined_union_type_die (type, context_die); | |
9142 | break; | |
9143 | ||
9144 | default: | |
71dfc51f | 9145 | abort (); |
a3f97cbb JW |
9146 | } |
9147 | } | |
9148 | ||
9149 | /* Generate a DW_TAG_lexical_block DIE followed by DIEs to represent all of the | |
9150 | things which are local to the given block. */ | |
71dfc51f | 9151 | |
a3f97cbb | 9152 | static void |
d7248bff | 9153 | gen_block_die (stmt, context_die, depth) |
a3f97cbb JW |
9154 | register tree stmt; |
9155 | register dw_die_ref context_die; | |
d7248bff | 9156 | int depth; |
a3f97cbb JW |
9157 | { |
9158 | register int must_output_die = 0; | |
9159 | register tree origin; | |
9160 | register tree decl; | |
9161 | register enum tree_code origin_code; | |
9162 | ||
9163 | /* Ignore blocks never really used to make RTL. */ | |
9164 | ||
71dfc51f RK |
9165 | if (stmt == NULL_TREE || !TREE_USED (stmt)) |
9166 | return; | |
a3f97cbb JW |
9167 | |
9168 | /* Determine the "ultimate origin" of this block. This block may be an | |
9169 | inlined instance of an inlined instance of inline function, so we have | |
9170 | to trace all of the way back through the origin chain to find out what | |
9171 | sort of node actually served as the original seed for the creation of | |
9172 | the current block. */ | |
9173 | origin = block_ultimate_origin (stmt); | |
9174 | origin_code = (origin != NULL) ? TREE_CODE (origin) : ERROR_MARK; | |
9175 | ||
9176 | /* Determine if we need to output any Dwarf DIEs at all to represent this | |
9177 | block. */ | |
9178 | if (origin_code == FUNCTION_DECL) | |
71dfc51f RK |
9179 | /* The outer scopes for inlinings *must* always be represented. We |
9180 | generate DW_TAG_inlined_subroutine DIEs for them. (See below.) */ | |
9181 | must_output_die = 1; | |
a3f97cbb JW |
9182 | else |
9183 | { | |
9184 | /* In the case where the current block represents an inlining of the | |
9185 | "body block" of an inline function, we must *NOT* output any DIE for | |
9186 | this block because we have already output a DIE to represent the | |
9187 | whole inlined function scope and the "body block" of any function | |
9188 | doesn't really represent a different scope according to ANSI C | |
9189 | rules. So we check here to make sure that this block does not | |
9190 | represent a "body block inlining" before trying to set the | |
9191 | `must_output_die' flag. */ | |
d7248bff | 9192 | if (! is_body_block (origin ? origin : stmt)) |
a3f97cbb JW |
9193 | { |
9194 | /* Determine if this block directly contains any "significant" | |
9195 | local declarations which we will need to output DIEs for. */ | |
9196 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
71dfc51f RK |
9197 | /* We are not in terse mode so *any* local declaration counts |
9198 | as being a "significant" one. */ | |
9199 | must_output_die = (BLOCK_VARS (stmt) != NULL); | |
a3f97cbb | 9200 | else |
71dfc51f RK |
9201 | /* We are in terse mode, so only local (nested) function |
9202 | definitions count as "significant" local declarations. */ | |
9203 | for (decl = BLOCK_VARS (stmt); | |
9204 | decl != NULL; decl = TREE_CHAIN (decl)) | |
9205 | if (TREE_CODE (decl) == FUNCTION_DECL | |
9206 | && DECL_INITIAL (decl)) | |
a3f97cbb | 9207 | { |
71dfc51f RK |
9208 | must_output_die = 1; |
9209 | break; | |
a3f97cbb | 9210 | } |
a3f97cbb JW |
9211 | } |
9212 | } | |
9213 | ||
9214 | /* It would be a waste of space to generate a Dwarf DW_TAG_lexical_block | |
9215 | DIE for any block which contains no significant local declarations at | |
9216 | all. Rather, in such cases we just call `decls_for_scope' so that any | |
9217 | needed Dwarf info for any sub-blocks will get properly generated. Note | |
9218 | that in terse mode, our definition of what constitutes a "significant" | |
9219 | local declaration gets restricted to include only inlined function | |
9220 | instances and local (nested) function definitions. */ | |
9221 | if (must_output_die) | |
9222 | { | |
9223 | if (origin_code == FUNCTION_DECL) | |
71dfc51f | 9224 | gen_inlined_subroutine_die (stmt, context_die, depth); |
a3f97cbb | 9225 | else |
71dfc51f | 9226 | gen_lexical_block_die (stmt, context_die, depth); |
a3f97cbb JW |
9227 | } |
9228 | else | |
d7248bff | 9229 | decls_for_scope (stmt, context_die, depth); |
a3f97cbb JW |
9230 | } |
9231 | ||
9232 | /* Generate all of the decls declared within a given scope and (recursively) | |
9ec36da5 | 9233 | all of its sub-blocks. */ |
71dfc51f | 9234 | |
a3f97cbb | 9235 | static void |
d7248bff | 9236 | decls_for_scope (stmt, context_die, depth) |
a3f97cbb JW |
9237 | register tree stmt; |
9238 | register dw_die_ref context_die; | |
d7248bff | 9239 | int depth; |
a3f97cbb JW |
9240 | { |
9241 | register tree decl; | |
9242 | register tree subblocks; | |
71dfc51f | 9243 | |
a3f97cbb | 9244 | /* Ignore blocks never really used to make RTL. */ |
71dfc51f RK |
9245 | if (stmt == NULL_TREE || ! TREE_USED (stmt)) |
9246 | return; | |
9247 | ||
d7248bff | 9248 | if (!BLOCK_ABSTRACT (stmt) && depth > 0) |
71dfc51f | 9249 | next_block_number++; |
a3f97cbb | 9250 | |
88dad228 JM |
9251 | /* Output the DIEs to represent all of the data objects and typedefs |
9252 | declared directly within this block but not within any nested | |
9253 | sub-blocks. Also, nested function and tag DIEs have been | |
9254 | generated with a parent of NULL; fix that up now. */ | |
a3f97cbb JW |
9255 | for (decl = BLOCK_VARS (stmt); |
9256 | decl != NULL; decl = TREE_CHAIN (decl)) | |
9257 | { | |
a94dbf2c JM |
9258 | register dw_die_ref die; |
9259 | ||
88dad228 | 9260 | if (TREE_CODE (decl) == FUNCTION_DECL) |
a94dbf2c | 9261 | die = lookup_decl_die (decl); |
88dad228 | 9262 | else if (TREE_CODE (decl) == TYPE_DECL && TYPE_DECL_IS_STUB (decl)) |
a94dbf2c JM |
9263 | die = lookup_type_die (TREE_TYPE (decl)); |
9264 | else | |
9265 | die = NULL; | |
9266 | ||
71dfc51f | 9267 | if (die != NULL && die->die_parent == NULL) |
ef76d03b | 9268 | add_child_die (context_die, die); |
88dad228 JM |
9269 | else |
9270 | gen_decl_die (decl, context_die); | |
a3f97cbb JW |
9271 | } |
9272 | ||
9273 | /* Output the DIEs to represent all sub-blocks (and the items declared | |
9274 | therein) of this block. */ | |
9275 | for (subblocks = BLOCK_SUBBLOCKS (stmt); | |
9276 | subblocks != NULL; | |
9277 | subblocks = BLOCK_CHAIN (subblocks)) | |
71dfc51f | 9278 | gen_block_die (subblocks, context_die, depth + 1); |
a3f97cbb JW |
9279 | } |
9280 | ||
a94dbf2c | 9281 | /* Is this a typedef we can avoid emitting? */ |
71dfc51f RK |
9282 | |
9283 | static inline int | |
a94dbf2c JM |
9284 | is_redundant_typedef (decl) |
9285 | register tree decl; | |
9286 | { | |
9287 | if (TYPE_DECL_IS_STUB (decl)) | |
9288 | return 1; | |
71dfc51f | 9289 | |
a94dbf2c JM |
9290 | if (DECL_ARTIFICIAL (decl) |
9291 | && DECL_CONTEXT (decl) | |
9292 | && is_tagged_type (DECL_CONTEXT (decl)) | |
9293 | && TREE_CODE (TYPE_NAME (DECL_CONTEXT (decl))) == TYPE_DECL | |
9294 | && DECL_NAME (decl) == DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))) | |
9295 | /* Also ignore the artificial member typedef for the class name. */ | |
9296 | return 1; | |
71dfc51f | 9297 | |
a94dbf2c JM |
9298 | return 0; |
9299 | } | |
9300 | ||
a3f97cbb | 9301 | /* Generate Dwarf debug information for a decl described by DECL. */ |
71dfc51f | 9302 | |
a3f97cbb JW |
9303 | static void |
9304 | gen_decl_die (decl, context_die) | |
9305 | register tree decl; | |
9306 | register dw_die_ref context_die; | |
9307 | { | |
9308 | register tree origin; | |
71dfc51f | 9309 | |
a3f97cbb JW |
9310 | /* Make a note of the decl node we are going to be working on. We may need |
9311 | to give the user the source coordinates of where it appeared in case we | |
9312 | notice (later on) that something about it looks screwy. */ | |
9313 | dwarf_last_decl = decl; | |
9314 | ||
9315 | if (TREE_CODE (decl) == ERROR_MARK) | |
71dfc51f | 9316 | return; |
a3f97cbb JW |
9317 | |
9318 | /* If this ..._DECL node is marked to be ignored, then ignore it. But don't | |
9319 | ignore a function definition, since that would screw up our count of | |
38e01259 | 9320 | blocks, and that in turn will completely screw up the labels we will |
a3f97cbb JW |
9321 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for |
9322 | subsequent blocks). */ | |
9323 | if (DECL_IGNORED_P (decl) && TREE_CODE (decl) != FUNCTION_DECL) | |
71dfc51f | 9324 | return; |
a3f97cbb | 9325 | |
a3f97cbb JW |
9326 | switch (TREE_CODE (decl)) |
9327 | { | |
9328 | case CONST_DECL: | |
9329 | /* The individual enumerators of an enum type get output when we output | |
9330 | the Dwarf representation of the relevant enum type itself. */ | |
9331 | break; | |
9332 | ||
9333 | case FUNCTION_DECL: | |
4edb7b60 JM |
9334 | /* Don't output any DIEs to represent mere function declarations, |
9335 | unless they are class members or explicit block externs. */ | |
9336 | if (DECL_INITIAL (decl) == NULL_TREE && DECL_CONTEXT (decl) == NULL_TREE | |
9337 | && (current_function_decl == NULL_TREE || ! DECL_ARTIFICIAL (decl))) | |
71dfc51f | 9338 | break; |
bdb669cb | 9339 | |
4927276d | 9340 | if (debug_info_level > DINFO_LEVEL_TERSE) |
a94dbf2c JM |
9341 | { |
9342 | /* Before we describe the FUNCTION_DECL itself, make sure that we | |
9343 | have described its return type. */ | |
9344 | gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die); | |
9345 | ||
9346 | /* And its containing type. */ | |
9347 | origin = decl_class_context (decl); | |
71dfc51f | 9348 | if (origin != NULL_TREE) |
a94dbf2c JM |
9349 | gen_type_die (origin, context_die); |
9350 | ||
9351 | /* And its virtual context. */ | |
71dfc51f | 9352 | if (DECL_VINDEX (decl) != NULL_TREE) |
a94dbf2c JM |
9353 | gen_type_die (DECL_CONTEXT (decl), context_die); |
9354 | } | |
a3f97cbb JW |
9355 | |
9356 | /* Now output a DIE to represent the function itself. */ | |
9357 | gen_subprogram_die (decl, context_die); | |
9358 | break; | |
9359 | ||
9360 | case TYPE_DECL: | |
9361 | /* If we are in terse mode, don't generate any DIEs to represent any | |
4927276d | 9362 | actual typedefs. */ |
a3f97cbb | 9363 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 9364 | break; |
a3f97cbb | 9365 | |
5c90448c JM |
9366 | /* In the special case of a TYPE_DECL node representing the |
9367 | declaration of some type tag, if the given TYPE_DECL is marked as | |
a3f97cbb JW |
9368 | having been instantiated from some other (original) TYPE_DECL node |
9369 | (e.g. one which was generated within the original definition of an | |
9370 | inline function) we have to generate a special (abbreviated) | |
ef76d03b | 9371 | DW_TAG_structure_type, DW_TAG_union_type, or DW_TAG_enumeration_type |
a3f97cbb | 9372 | DIE here. */ |
71dfc51f | 9373 | if (TYPE_DECL_IS_STUB (decl) && DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE) |
a3f97cbb JW |
9374 | { |
9375 | gen_tagged_type_instantiation_die (TREE_TYPE (decl), context_die); | |
9376 | break; | |
9377 | } | |
a3f97cbb | 9378 | |
a94dbf2c JM |
9379 | if (is_redundant_typedef (decl)) |
9380 | gen_type_die (TREE_TYPE (decl), context_die); | |
9381 | else | |
71dfc51f RK |
9382 | /* Output a DIE to represent the typedef itself. */ |
9383 | gen_typedef_die (decl, context_die); | |
a3f97cbb JW |
9384 | break; |
9385 | ||
9386 | case LABEL_DECL: | |
9387 | if (debug_info_level >= DINFO_LEVEL_NORMAL) | |
71dfc51f | 9388 | gen_label_die (decl, context_die); |
a3f97cbb JW |
9389 | break; |
9390 | ||
9391 | case VAR_DECL: | |
9392 | /* If we are in terse mode, don't generate any DIEs to represent any | |
9393 | variable declarations or definitions. */ | |
9394 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 9395 | break; |
a3f97cbb JW |
9396 | |
9397 | /* Output any DIEs that are needed to specify the type of this data | |
9398 | object. */ | |
9399 | gen_type_die (TREE_TYPE (decl), context_die); | |
9400 | ||
a94dbf2c JM |
9401 | /* And its containing type. */ |
9402 | origin = decl_class_context (decl); | |
71dfc51f | 9403 | if (origin != NULL_TREE) |
a94dbf2c JM |
9404 | gen_type_die (origin, context_die); |
9405 | ||
a3f97cbb JW |
9406 | /* Now output the DIE to represent the data object itself. This gets |
9407 | complicated because of the possibility that the VAR_DECL really | |
9408 | represents an inlined instance of a formal parameter for an inline | |
9409 | function. */ | |
9410 | origin = decl_ultimate_origin (decl); | |
71dfc51f RK |
9411 | if (origin != NULL_TREE && TREE_CODE (origin) == PARM_DECL) |
9412 | gen_formal_parameter_die (decl, context_die); | |
a3f97cbb | 9413 | else |
71dfc51f | 9414 | gen_variable_die (decl, context_die); |
a3f97cbb JW |
9415 | break; |
9416 | ||
9417 | case FIELD_DECL: | |
a94dbf2c JM |
9418 | /* Ignore the nameless fields that are used to skip bits, but |
9419 | handle C++ anonymous unions. */ | |
71dfc51f RK |
9420 | if (DECL_NAME (decl) != NULL_TREE |
9421 | || TREE_CODE (TREE_TYPE (decl)) == UNION_TYPE) | |
a3f97cbb JW |
9422 | { |
9423 | gen_type_die (member_declared_type (decl), context_die); | |
9424 | gen_field_die (decl, context_die); | |
9425 | } | |
9426 | break; | |
9427 | ||
9428 | case PARM_DECL: | |
9429 | gen_type_die (TREE_TYPE (decl), context_die); | |
9430 | gen_formal_parameter_die (decl, context_die); | |
9431 | break; | |
9432 | ||
9433 | default: | |
9434 | abort (); | |
9435 | } | |
a3f97cbb JW |
9436 | } |
9437 | \f | |
71dfc51f RK |
9438 | /* Write the debugging output for DECL. */ |
9439 | ||
a3f97cbb | 9440 | void |
88dad228 | 9441 | dwarf2out_decl (decl) |
a3f97cbb | 9442 | register tree decl; |
a3f97cbb | 9443 | { |
88dad228 JM |
9444 | register dw_die_ref context_die = comp_unit_die; |
9445 | ||
a3f97cbb | 9446 | if (TREE_CODE (decl) == ERROR_MARK) |
71dfc51f | 9447 | return; |
a3f97cbb JW |
9448 | |
9449 | /* If this ..._DECL node is marked to be ignored, then ignore it. We gotta | |
9450 | hope that the node in question doesn't represent a function definition. | |
9451 | If it does, then totally ignoring it is bound to screw up our count of | |
38e01259 | 9452 | blocks, and that in turn will completely screw up the labels we will |
a3f97cbb JW |
9453 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for |
9454 | subsequent blocks). (It's too bad that BLOCK nodes don't carry their | |
9455 | own sequence numbers with them!) */ | |
9456 | if (DECL_IGNORED_P (decl)) | |
9457 | { | |
9458 | if (TREE_CODE (decl) == FUNCTION_DECL | |
02e24c7a | 9459 | && DECL_INITIAL (decl) != NULL) |
71dfc51f RK |
9460 | abort (); |
9461 | ||
a3f97cbb JW |
9462 | return; |
9463 | } | |
9464 | ||
9465 | switch (TREE_CODE (decl)) | |
9466 | { | |
9467 | case FUNCTION_DECL: | |
9468 | /* Ignore this FUNCTION_DECL if it refers to a builtin declaration of a | |
9469 | builtin function. Explicit programmer-supplied declarations of | |
9470 | these same functions should NOT be ignored however. */ | |
9471 | if (DECL_EXTERNAL (decl) && DECL_FUNCTION_CODE (decl)) | |
b1ccbc24 | 9472 | return; |
a3f97cbb JW |
9473 | |
9474 | /* What we would really like to do here is to filter out all mere | |
9475 | file-scope declarations of file-scope functions which are never | |
9476 | referenced later within this translation unit (and keep all of ones | |
956d6950 | 9477 | that *are* referenced later on) but we aren't clairvoyant, so we have |
a3f97cbb JW |
9478 | no idea which functions will be referenced in the future (i.e. later |
9479 | on within the current translation unit). So here we just ignore all | |
9480 | file-scope function declarations which are not also definitions. If | |
956d6950 | 9481 | and when the debugger needs to know something about these functions, |
a3f97cbb JW |
9482 | it wil have to hunt around and find the DWARF information associated |
9483 | with the definition of the function. Note that we can't just check | |
9484 | `DECL_EXTERNAL' to find out which FUNCTION_DECL nodes represent | |
9485 | definitions and which ones represent mere declarations. We have to | |
9486 | check `DECL_INITIAL' instead. That's because the C front-end | |
9487 | supports some weird semantics for "extern inline" function | |
9488 | definitions. These can get inlined within the current translation | |
9489 | unit (an thus, we need to generate DWARF info for their abstract | |
9490 | instances so that the DWARF info for the concrete inlined instances | |
9491 | can have something to refer to) but the compiler never generates any | |
9492 | out-of-lines instances of such things (despite the fact that they | |
9493 | *are* definitions). The important point is that the C front-end | |
9494 | marks these "extern inline" functions as DECL_EXTERNAL, but we need | |
273dbe67 | 9495 | to generate DWARF for them anyway. Note that the C++ front-end also |
a3f97cbb JW |
9496 | plays some similar games for inline function definitions appearing |
9497 | within include files which also contain | |
9498 | `#pragma interface' pragmas. */ | |
9499 | if (DECL_INITIAL (decl) == NULL_TREE) | |
b1ccbc24 | 9500 | return; |
88dad228 | 9501 | |
9c6cd30e JM |
9502 | /* If we're a nested function, initially use a parent of NULL; if we're |
9503 | a plain function, this will be fixed up in decls_for_scope. If | |
9504 | we're a method, it will be ignored, since we already have a DIE. */ | |
88dad228 | 9505 | if (decl_function_context (decl)) |
9c6cd30e | 9506 | context_die = NULL; |
88dad228 | 9507 | |
a3f97cbb JW |
9508 | break; |
9509 | ||
9510 | case VAR_DECL: | |
9511 | /* Ignore this VAR_DECL if it refers to a file-scope extern data object | |
9512 | declaration and if the declaration was never even referenced from | |
9513 | within this entire compilation unit. We suppress these DIEs in | |
9514 | order to save space in the .debug section (by eliminating entries | |
9515 | which are probably useless). Note that we must not suppress | |
9516 | block-local extern declarations (whether used or not) because that | |
9517 | would screw-up the debugger's name lookup mechanism and cause it to | |
9518 | miss things which really ought to be in scope at a given point. */ | |
9519 | if (DECL_EXTERNAL (decl) && !TREE_USED (decl)) | |
71dfc51f | 9520 | return; |
a3f97cbb JW |
9521 | |
9522 | /* If we are in terse mode, don't generate any DIEs to represent any | |
9523 | variable declarations or definitions. */ | |
9524 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
71dfc51f | 9525 | return; |
a3f97cbb JW |
9526 | break; |
9527 | ||
9528 | case TYPE_DECL: | |
9529 | /* Don't bother trying to generate any DIEs to represent any of the | |
a9d38797 JM |
9530 | normal built-in types for the language we are compiling. */ |
9531 | if (DECL_SOURCE_LINE (decl) == 0) | |
a94dbf2c JM |
9532 | { |
9533 | /* OK, we need to generate one for `bool' so GDB knows what type | |
9534 | comparisons have. */ | |
9535 | if ((get_AT_unsigned (comp_unit_die, DW_AT_language) | |
9536 | == DW_LANG_C_plus_plus) | |
9537 | && TREE_CODE (TREE_TYPE (decl)) == BOOLEAN_TYPE) | |
9538 | modified_type_die (TREE_TYPE (decl), 0, 0, NULL); | |
71dfc51f | 9539 | |
a94dbf2c JM |
9540 | return; |
9541 | } | |
a3f97cbb | 9542 | |
88dad228 | 9543 | /* If we are in terse mode, don't generate any DIEs for types. */ |
a3f97cbb | 9544 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
4927276d | 9545 | return; |
88dad228 JM |
9546 | |
9547 | /* If we're a function-scope tag, initially use a parent of NULL; | |
9548 | this will be fixed up in decls_for_scope. */ | |
9549 | if (decl_function_context (decl)) | |
3f76745e | 9550 | context_die = NULL; |
88dad228 | 9551 | |
a3f97cbb JW |
9552 | break; |
9553 | ||
9554 | default: | |
9555 | return; | |
9556 | } | |
9557 | ||
88dad228 | 9558 | gen_decl_die (decl, context_die); |
a94dbf2c | 9559 | output_pending_types_for_scope (comp_unit_die); |
a3f97cbb JW |
9560 | } |
9561 | ||
9562 | /* Output a marker (i.e. a label) for the beginning of the generated code for | |
9563 | a lexical block. */ | |
71dfc51f | 9564 | |
a3f97cbb | 9565 | void |
9a666dda | 9566 | dwarf2out_begin_block (blocknum) |
a3f97cbb JW |
9567 | register unsigned blocknum; |
9568 | { | |
a3f97cbb | 9569 | function_section (current_function_decl); |
5c90448c | 9570 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum); |
a3f97cbb JW |
9571 | } |
9572 | ||
9573 | /* Output a marker (i.e. a label) for the end of the generated code for a | |
9574 | lexical block. */ | |
71dfc51f | 9575 | |
a3f97cbb | 9576 | void |
9a666dda | 9577 | dwarf2out_end_block (blocknum) |
a3f97cbb JW |
9578 | register unsigned blocknum; |
9579 | { | |
a3f97cbb | 9580 | function_section (current_function_decl); |
5c90448c | 9581 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum); |
a3f97cbb JW |
9582 | } |
9583 | ||
9584 | /* Output a marker (i.e. a label) at a point in the assembly code which | |
9585 | corresponds to a given source level label. */ | |
71dfc51f | 9586 | |
a3f97cbb | 9587 | void |
9a666dda | 9588 | dwarf2out_label (insn) |
a3f97cbb JW |
9589 | register rtx insn; |
9590 | { | |
9591 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
71dfc51f | 9592 | |
a3f97cbb JW |
9593 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
9594 | { | |
9595 | function_section (current_function_decl); | |
5c90448c JM |
9596 | sprintf (label, INSN_LABEL_FMT, current_funcdef_number); |
9597 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, label, | |
9598 | (unsigned) INSN_UID (insn)); | |
a3f97cbb JW |
9599 | } |
9600 | } | |
9601 | ||
a3f97cbb | 9602 | /* Lookup a filename (in the list of filenames that we know about here in |
9a666dda | 9603 | dwarf2out.c) and return its "index". The index of each (known) filename is |
a3f97cbb JW |
9604 | just a unique number which is associated with only that one filename. |
9605 | We need such numbers for the sake of generating labels | |
9606 | (in the .debug_sfnames section) and references to those | |
9607 | files numbers (in the .debug_srcinfo and.debug_macinfo sections). | |
9608 | If the filename given as an argument is not found in our current list, | |
9609 | add it to the list and assign it the next available unique index number. | |
9610 | In order to speed up searches, we remember the index of the filename | |
9611 | was looked up last. This handles the majority of all searches. */ | |
71dfc51f | 9612 | |
a3f97cbb JW |
9613 | static unsigned |
9614 | lookup_filename (file_name) | |
9615 | char *file_name; | |
9616 | { | |
9617 | static unsigned last_file_lookup_index = 0; | |
a3f97cbb JW |
9618 | register unsigned i; |
9619 | ||
9620 | /* Check to see if the file name that was searched on the previous call | |
9621 | matches this file name. If so, return the index. */ | |
9622 | if (last_file_lookup_index != 0) | |
71dfc51f RK |
9623 | if (strcmp (file_name, file_table[last_file_lookup_index]) == 0) |
9624 | return last_file_lookup_index; | |
a3f97cbb JW |
9625 | |
9626 | /* Didn't match the previous lookup, search the table */ | |
9627 | for (i = 1; i < file_table_in_use; ++i) | |
71dfc51f RK |
9628 | if (strcmp (file_name, file_table[i]) == 0) |
9629 | { | |
9630 | last_file_lookup_index = i; | |
9631 | return i; | |
9632 | } | |
a3f97cbb JW |
9633 | |
9634 | /* Prepare to add a new table entry by making sure there is enough space in | |
9635 | the table to do so. If not, expand the current table. */ | |
9636 | if (file_table_in_use == file_table_allocated) | |
9637 | { | |
9638 | file_table_allocated += FILE_TABLE_INCREMENT; | |
9639 | file_table | |
71dfc51f RK |
9640 | = (char **) xrealloc (file_table, |
9641 | file_table_allocated * sizeof (char *)); | |
a3f97cbb JW |
9642 | } |
9643 | ||
71dfc51f | 9644 | /* Add the new entry to the end of the filename table. */ |
a3f97cbb JW |
9645 | file_table[file_table_in_use] = xstrdup (file_name); |
9646 | last_file_lookup_index = file_table_in_use++; | |
71dfc51f | 9647 | |
a3f97cbb JW |
9648 | return last_file_lookup_index; |
9649 | } | |
9650 | ||
9651 | /* Output a label to mark the beginning of a source code line entry | |
9652 | and record information relating to this source line, in | |
9653 | 'line_info_table' for later output of the .debug_line section. */ | |
71dfc51f | 9654 | |
a3f97cbb | 9655 | void |
9a666dda | 9656 | dwarf2out_line (filename, line) |
a3f97cbb JW |
9657 | register char *filename; |
9658 | register unsigned line; | |
9659 | { | |
a3f97cbb JW |
9660 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
9661 | { | |
9662 | function_section (current_function_decl); | |
a3f97cbb | 9663 | |
e90b62db | 9664 | if (DECL_SECTION_NAME (current_function_decl)) |
a3f97cbb | 9665 | { |
e90b62db | 9666 | register dw_separate_line_info_ref line_info; |
5c90448c JM |
9667 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, SEPARATE_LINE_CODE_LABEL, |
9668 | separate_line_info_table_in_use); | |
e90b62db JM |
9669 | fputc ('\n', asm_out_file); |
9670 | ||
9671 | /* expand the line info table if necessary */ | |
9672 | if (separate_line_info_table_in_use | |
9673 | == separate_line_info_table_allocated) | |
9674 | { | |
9675 | separate_line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
9676 | separate_line_info_table | |
71dfc51f RK |
9677 | = (dw_separate_line_info_ref) |
9678 | xrealloc (separate_line_info_table, | |
9679 | separate_line_info_table_allocated | |
9680 | * sizeof (dw_separate_line_info_entry)); | |
e90b62db | 9681 | } |
71dfc51f RK |
9682 | |
9683 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
9684 | line_info |
9685 | = &separate_line_info_table[separate_line_info_table_in_use++]; | |
9686 | line_info->dw_file_num = lookup_filename (filename); | |
9687 | line_info->dw_line_num = line; | |
9688 | line_info->function = current_funcdef_number; | |
9689 | } | |
9690 | else | |
9691 | { | |
9692 | register dw_line_info_ref line_info; | |
71dfc51f | 9693 | |
5c90448c JM |
9694 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, LINE_CODE_LABEL, |
9695 | line_info_table_in_use); | |
e90b62db JM |
9696 | fputc ('\n', asm_out_file); |
9697 | ||
71dfc51f | 9698 | /* Expand the line info table if necessary. */ |
e90b62db JM |
9699 | if (line_info_table_in_use == line_info_table_allocated) |
9700 | { | |
9701 | line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
9702 | line_info_table | |
71dfc51f RK |
9703 | = (dw_line_info_ref) |
9704 | xrealloc (line_info_table, | |
9705 | (line_info_table_allocated | |
9706 | * sizeof (dw_line_info_entry))); | |
e90b62db | 9707 | } |
71dfc51f RK |
9708 | |
9709 | /* Add the new entry at the end of the line_info_table. */ | |
e90b62db JM |
9710 | line_info = &line_info_table[line_info_table_in_use++]; |
9711 | line_info->dw_file_num = lookup_filename (filename); | |
9712 | line_info->dw_line_num = line; | |
a3f97cbb | 9713 | } |
a3f97cbb JW |
9714 | } |
9715 | } | |
9716 | ||
9717 | /* Record the beginning of a new source file, for later output | |
9718 | of the .debug_macinfo section. At present, unimplemented. */ | |
71dfc51f | 9719 | |
a3f97cbb | 9720 | void |
9a666dda | 9721 | dwarf2out_start_source_file (filename) |
487a6e06 | 9722 | register char *filename ATTRIBUTE_UNUSED; |
a3f97cbb JW |
9723 | { |
9724 | } | |
9725 | ||
9a666dda | 9726 | /* Record the end of a source file, for later output |
a3f97cbb | 9727 | of the .debug_macinfo section. At present, unimplemented. */ |
71dfc51f | 9728 | |
a3f97cbb | 9729 | void |
9a666dda | 9730 | dwarf2out_end_source_file () |
a3f97cbb JW |
9731 | { |
9732 | } | |
9733 | ||
9734 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
9735 | the tail part of the directive line, i.e. the part which is past the | |
9736 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 9737 | |
a3f97cbb | 9738 | void |
9a666dda | 9739 | dwarf2out_define (lineno, buffer) |
a3f97cbb JW |
9740 | register unsigned lineno; |
9741 | register char *buffer; | |
9742 | { | |
9743 | static int initialized = 0; | |
9744 | if (!initialized) | |
9745 | { | |
9a666dda | 9746 | dwarf2out_start_source_file (primary_filename); |
a3f97cbb JW |
9747 | initialized = 1; |
9748 | } | |
9749 | } | |
9750 | ||
9751 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
9752 | the tail part of the directive line, i.e. the part which is past the | |
9753 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
71dfc51f | 9754 | |
a3f97cbb | 9755 | void |
9a666dda | 9756 | dwarf2out_undef (lineno, buffer) |
487a6e06 KG |
9757 | register unsigned lineno ATTRIBUTE_UNUSED; |
9758 | register char *buffer ATTRIBUTE_UNUSED; | |
a3f97cbb JW |
9759 | { |
9760 | } | |
9761 | ||
9762 | /* Set up for Dwarf output at the start of compilation. */ | |
71dfc51f | 9763 | |
a3f97cbb | 9764 | void |
9a666dda | 9765 | dwarf2out_init (asm_out_file, main_input_filename) |
a3f97cbb JW |
9766 | register FILE *asm_out_file; |
9767 | register char *main_input_filename; | |
9768 | { | |
a3f97cbb JW |
9769 | /* Remember the name of the primary input file. */ |
9770 | primary_filename = main_input_filename; | |
9771 | ||
9772 | /* Allocate the initial hunk of the file_table. */ | |
9773 | file_table = (char **) xmalloc (FILE_TABLE_INCREMENT * sizeof (char *)); | |
b1ccbc24 | 9774 | bzero ((char *) file_table, FILE_TABLE_INCREMENT * sizeof (char *)); |
a3f97cbb | 9775 | file_table_allocated = FILE_TABLE_INCREMENT; |
71dfc51f RK |
9776 | |
9777 | /* Skip the first entry - file numbers begin at 1. */ | |
a3f97cbb JW |
9778 | file_table_in_use = 1; |
9779 | ||
a3f97cbb JW |
9780 | /* Allocate the initial hunk of the decl_die_table. */ |
9781 | decl_die_table | |
9782 | = (dw_die_ref *) xmalloc (DECL_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
b1ccbc24 RK |
9783 | bzero ((char *) decl_die_table, |
9784 | DECL_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
a3f97cbb JW |
9785 | decl_die_table_allocated = DECL_DIE_TABLE_INCREMENT; |
9786 | decl_die_table_in_use = 0; | |
9787 | ||
9788 | /* Allocate the initial hunk of the decl_scope_table. */ | |
9789 | decl_scope_table | |
e3e7774e JW |
9790 | = (decl_scope_node *) xmalloc (DECL_SCOPE_TABLE_INCREMENT |
9791 | * sizeof (decl_scope_node)); | |
b1ccbc24 | 9792 | bzero ((char *) decl_scope_table, |
e3e7774e | 9793 | DECL_SCOPE_TABLE_INCREMENT * sizeof (decl_scope_node)); |
a3f97cbb JW |
9794 | decl_scope_table_allocated = DECL_SCOPE_TABLE_INCREMENT; |
9795 | decl_scope_depth = 0; | |
9796 | ||
9797 | /* Allocate the initial hunk of the abbrev_die_table. */ | |
9798 | abbrev_die_table | |
9799 | = (dw_die_ref *) xmalloc (ABBREV_DIE_TABLE_INCREMENT | |
9800 | * sizeof (dw_die_ref)); | |
b1ccbc24 RK |
9801 | bzero ((char *) abbrev_die_table, |
9802 | ABBREV_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
a3f97cbb | 9803 | abbrev_die_table_allocated = ABBREV_DIE_TABLE_INCREMENT; |
71dfc51f | 9804 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
9805 | abbrev_die_table_in_use = 1; |
9806 | ||
9807 | /* Allocate the initial hunk of the line_info_table. */ | |
9808 | line_info_table | |
9809 | = (dw_line_info_ref) xmalloc (LINE_INFO_TABLE_INCREMENT | |
9810 | * sizeof (dw_line_info_entry)); | |
b1ccbc24 RK |
9811 | bzero ((char *) line_info_table, |
9812 | LINE_INFO_TABLE_INCREMENT * sizeof (dw_line_info_entry)); | |
a3f97cbb | 9813 | line_info_table_allocated = LINE_INFO_TABLE_INCREMENT; |
71dfc51f | 9814 | /* Zero-th entry is allocated, but unused */ |
a3f97cbb JW |
9815 | line_info_table_in_use = 1; |
9816 | ||
a3f97cbb JW |
9817 | /* Generate the initial DIE for the .debug section. Note that the (string) |
9818 | value given in the DW_AT_name attribute of the DW_TAG_compile_unit DIE | |
9819 | will (typically) be a relative pathname and that this pathname should be | |
9820 | taken as being relative to the directory from which the compiler was | |
9821 | invoked when the given (base) source file was compiled. */ | |
9822 | gen_compile_unit_die (main_input_filename); | |
9823 | ||
5c90448c | 9824 | ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0); |
a3f97cbb JW |
9825 | } |
9826 | ||
9827 | /* Output stuff that dwarf requires at the end of every file, | |
9828 | and generate the DWARF-2 debugging info. */ | |
71dfc51f | 9829 | |
a3f97cbb | 9830 | void |
9a666dda | 9831 | dwarf2out_finish () |
a3f97cbb | 9832 | { |
ef76d03b JW |
9833 | limbo_die_node *node, *next_node; |
9834 | dw_die_ref die; | |
9835 | dw_attr_ref a; | |
9836 | ||
9837 | /* Traverse the limbo die list, and add parent/child links. The only | |
9838 | dies without parents that should be here are concrete instances of | |
9839 | inline functions, and the comp_unit_die. We can ignore the comp_unit_die. | |
9840 | For concrete instances, we can get the parent die from the abstract | |
9841 | instance. */ | |
9842 | for (node = limbo_die_list; node; node = next_node) | |
9843 | { | |
9844 | next_node = node->next; | |
9845 | die = node->die; | |
9846 | ||
9847 | if (die->die_parent == NULL) | |
9848 | { | |
9849 | a = get_AT (die, DW_AT_abstract_origin); | |
9850 | if (a) | |
9851 | add_child_die (a->dw_attr_val.v.val_die_ref->die_parent, die); | |
9852 | else if (die == comp_unit_die) | |
9853 | ; | |
9854 | else | |
9855 | abort (); | |
9856 | } | |
9857 | free (node); | |
9858 | } | |
9859 | ||
a3f97cbb JW |
9860 | /* Traverse the DIE tree and add sibling attributes to those DIE's |
9861 | that have children. */ | |
9862 | add_sibling_attributes (comp_unit_die); | |
9863 | ||
9864 | /* Output a terminator label for the .text section. */ | |
9865 | fputc ('\n', asm_out_file); | |
9866 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
5c90448c | 9867 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, TEXT_END_LABEL, 0); |
a3f97cbb | 9868 | |
bdb669cb | 9869 | #if 0 |
a3f97cbb JW |
9870 | /* Output a terminator label for the .data section. */ |
9871 | fputc ('\n', asm_out_file); | |
9872 | ASM_OUTPUT_SECTION (asm_out_file, DATA_SECTION); | |
5c90448c | 9873 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, DATA_END_LABEL, 0); |
a3f97cbb JW |
9874 | |
9875 | /* Output a terminator label for the .bss section. */ | |
9876 | fputc ('\n', asm_out_file); | |
9877 | ASM_OUTPUT_SECTION (asm_out_file, BSS_SECTION); | |
5c90448c | 9878 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BSS_END_LABEL, 0); |
bdb669cb | 9879 | #endif |
a3f97cbb | 9880 | |
e90b62db JM |
9881 | /* Output the source line correspondence table. */ |
9882 | if (line_info_table_in_use > 1 || separate_line_info_table_in_use) | |
9883 | { | |
9884 | fputc ('\n', asm_out_file); | |
c53aa195 | 9885 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION); |
e90b62db JM |
9886 | output_line_info (); |
9887 | ||
9888 | /* We can only use the low/high_pc attributes if all of the code | |
9889 | was in .text. */ | |
9890 | if (separate_line_info_table_in_use == 0) | |
9891 | { | |
71208e03 JW |
9892 | add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, |
9893 | stripattributes (TEXT_SECTION)); | |
5c90448c | 9894 | add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label); |
e90b62db | 9895 | } |
71dfc51f | 9896 | |
1553e85a | 9897 | add_AT_section_offset (comp_unit_die, DW_AT_stmt_list, DEBUG_LINE_SECTION); |
e90b62db JM |
9898 | } |
9899 | ||
a3f97cbb JW |
9900 | /* Output the abbreviation table. */ |
9901 | fputc ('\n', asm_out_file); | |
9902 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
9903 | build_abbrev_table (comp_unit_die); | |
9904 | output_abbrev_section (); | |
9905 | ||
a3f97cbb JW |
9906 | /* Initialize the beginning DIE offset - and calculate sizes/offsets. */ |
9907 | next_die_offset = DWARF_COMPILE_UNIT_HEADER_SIZE; | |
9908 | calc_die_sizes (comp_unit_die); | |
9909 | ||
a3f97cbb JW |
9910 | /* Output debugging information. */ |
9911 | fputc ('\n', asm_out_file); | |
c53aa195 | 9912 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_INFO_SECTION); |
a3f97cbb JW |
9913 | output_compilation_unit_header (); |
9914 | output_die (comp_unit_die); | |
9915 | ||
d291dd49 JM |
9916 | if (pubname_table_in_use) |
9917 | { | |
9918 | /* Output public names table. */ | |
9919 | fputc ('\n', asm_out_file); | |
9920 | ASM_OUTPUT_SECTION (asm_out_file, PUBNAMES_SECTION); | |
9921 | output_pubnames (); | |
9922 | } | |
9923 | ||
a3f97cbb JW |
9924 | if (fde_table_in_use) |
9925 | { | |
a3f97cbb JW |
9926 | /* Output the address range information. */ |
9927 | fputc ('\n', asm_out_file); | |
9928 | ASM_OUTPUT_SECTION (asm_out_file, ARANGES_SECTION); | |
9929 | output_aranges (); | |
9930 | } | |
9931 | } | |
9a666dda | 9932 | #endif /* DWARF2_DEBUGGING_INFO */ |