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37ba3390 | 1 | /* Output sdb-format symbol table information from GNU compiler. |
c913b6f1 | 2 | Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
cf403648 | 3 | 2000, 2001, 2002 Free Software Foundation, Inc. |
37ba3390 | 4 | |
1322177d | 5 | This file is part of GCC. |
37ba3390 | 6 | |
1322177d LB |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 2, or (at your option) any later | |
10 | version. | |
37ba3390 | 11 | |
1322177d LB |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
37ba3390 RS |
16 | |
17 | You should have received a copy of the GNU General Public License | |
1322177d LB |
18 | along with GCC; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
37ba3390 RS |
21 | |
22 | /* mike@tredysvr.Tredydev.Unisys.COM says: | |
23 | I modified the struct.c example and have a nm of a .o resulting from the | |
24 | AT&T C compiler. From the example below I would conclude the following: | |
25 | ||
26 | 1. All .defs from structures are emitted as scanned. The example below | |
27 | clearly shows the symbol table entries for BoxRec2 are after the first | |
28 | function. | |
29 | ||
30 | 2. All functions and their locals (including statics) are emitted as scanned. | |
31 | ||
32 | 3. All nested unnamed union and structure .defs must be emitted before | |
33 | the structure in which they are nested. The AT&T assembler is a | |
34 | one pass beast as far as symbolics are concerned. | |
35 | ||
36 | 4. All structure .defs are emitted before the typedefs that refer to them. | |
37 | ||
38 | 5. All top level static and external variable definitions are moved to the | |
6dc42e49 | 39 | end of file with all top level statics occurring first before externs. |
37ba3390 RS |
40 | |
41 | 6. All undefined references are at the end of the file. | |
42 | */ | |
43 | ||
44 | #include "config.h" | |
45 | ||
46 | #ifdef SDB_DEBUGGING_INFO | |
47 | ||
670ee920 | 48 | #include "system.h" |
37ba3390 RS |
49 | #include "tree.h" |
50 | #include "rtl.h" | |
37ba3390 RS |
51 | #include "regs.h" |
52 | #include "flags.h" | |
53 | #include "insn-config.h" | |
54 | #include "reload.h" | |
e016950d KG |
55 | #include "output.h" |
56 | #include "toplev.h" | |
4eadbbd5 | 57 | #include "ggc.h" |
d0af450d | 58 | #include "tm_p.h" |
37ba3390 | 59 | #include "gsyms.h" |
a51d908e | 60 | #include "debug.h" |
37ba3390 RS |
61 | |
62 | /* 1 if PARM is passed to this function in memory. */ | |
63 | ||
64 | #define PARM_PASSED_IN_MEMORY(PARM) \ | |
65 | (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM) | |
66 | ||
67 | /* A C expression for the integer offset value of an automatic variable | |
68 | (C_AUTO) having address X (an RTX). */ | |
69 | #ifndef DEBUGGER_AUTO_OFFSET | |
70 | #define DEBUGGER_AUTO_OFFSET(X) \ | |
71 | (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) | |
72 | #endif | |
73 | ||
74 | /* A C expression for the integer offset value of an argument (C_ARG) | |
75 | having address X (an RTX). The nominal offset is OFFSET. */ | |
76 | #ifndef DEBUGGER_ARG_OFFSET | |
77 | #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET) | |
78 | #endif | |
79 | ||
80 | /* Line number of beginning of current function, minus one. | |
81 | Negative means not in a function or not using sdb. */ | |
82 | ||
f4dc8d96 | 83 | int sdb_begin_function_line = -1; |
37ba3390 RS |
84 | |
85 | /* Counter to generate unique "names" for nameless struct members. */ | |
86 | ||
87 | static int unnamed_struct_number = 0; | |
88 | ||
89 | extern FILE *asm_out_file; | |
90 | ||
91 | extern tree current_function_decl; | |
92 | ||
76ead72b | 93 | #include "sdbout.h" |
37ba3390 | 94 | |
e2a12aca | 95 | static void sdbout_init PARAMS ((const char *)); |
3914abb4 | 96 | static void sdbout_finish PARAMS ((const char *)); |
5197bd50 RK |
97 | static void sdbout_start_source_file PARAMS ((unsigned int, const char *)); |
98 | static void sdbout_end_source_file PARAMS ((unsigned int)); | |
99 | static void sdbout_begin_block PARAMS ((unsigned int, unsigned int)); | |
100 | static void sdbout_end_block PARAMS ((unsigned int, unsigned int)); | |
653e276c | 101 | static void sdbout_source_line PARAMS ((unsigned int, const char *)); |
e2a12aca | 102 | static void sdbout_end_epilogue PARAMS ((void)); |
2b85879e | 103 | static void sdbout_global_decl PARAMS ((tree)); |
653e276c NB |
104 | #ifndef MIPS_DEBUGGING_INFO |
105 | static void sdbout_begin_prologue PARAMS ((unsigned int, const char *)); | |
106 | #endif | |
107 | static void sdbout_end_prologue PARAMS ((unsigned int)); | |
108 | static void sdbout_begin_function PARAMS ((tree)); | |
e2a12aca | 109 | static void sdbout_end_function PARAMS ((unsigned int)); |
e1772ac0 NB |
110 | static void sdbout_toplevel_data PARAMS ((tree)); |
111 | static void sdbout_label PARAMS ((rtx)); | |
cdadb1dd KG |
112 | static char *gen_fake_label PARAMS ((void)); |
113 | static int plain_type PARAMS ((tree)); | |
114 | static int template_name_p PARAMS ((tree)); | |
115 | static void sdbout_record_type_name PARAMS ((tree)); | |
116 | static int plain_type_1 PARAMS ((tree, int)); | |
117 | static void sdbout_block PARAMS ((tree)); | |
118 | static void sdbout_syms PARAMS ((tree)); | |
7bdb32b9 | 119 | #ifdef SDB_ALLOW_FORWARD_REFERENCES |
cdadb1dd KG |
120 | static void sdbout_queue_anonymous_type PARAMS ((tree)); |
121 | static void sdbout_dequeue_anonymous_types PARAMS ((void)); | |
7bdb32b9 | 122 | #endif |
cdadb1dd KG |
123 | static void sdbout_type PARAMS ((tree)); |
124 | static void sdbout_field_types PARAMS ((tree)); | |
125 | static void sdbout_one_type PARAMS ((tree)); | |
126 | static void sdbout_parms PARAMS ((tree)); | |
127 | static void sdbout_reg_parms PARAMS ((tree)); | |
3914abb4 | 128 | static void sdbout_global_decl PARAMS ((tree)); |
37ba3390 | 129 | \f |
37ba3390 RS |
130 | /* Random macros describing parts of SDB data. */ |
131 | ||
132 | /* Put something here if lines get too long */ | |
133 | #define CONTIN | |
134 | ||
135 | /* Default value of delimiter is ";". */ | |
136 | #ifndef SDB_DELIM | |
137 | #define SDB_DELIM ";" | |
138 | #endif | |
139 | ||
140 | /* Maximum number of dimensions the assembler will allow. */ | |
141 | #ifndef SDB_MAX_DIM | |
142 | #define SDB_MAX_DIM 4 | |
143 | #endif | |
144 | ||
145 | #ifndef PUT_SDB_SCL | |
146 | #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM) | |
147 | #endif | |
148 | ||
149 | #ifndef PUT_SDB_INT_VAL | |
e016950d KG |
150 | #define PUT_SDB_INT_VAL(a) \ |
151 | do { \ | |
152 | fputs ("\t.val\t", asm_out_file); \ | |
cf403648 | 153 | fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT) (a)); \ |
e016950d KG |
154 | fprintf (asm_out_file, "%s", SDB_DELIM); \ |
155 | } while (0) | |
156 | ||
37ba3390 RS |
157 | #endif |
158 | ||
159 | #ifndef PUT_SDB_VAL | |
160 | #define PUT_SDB_VAL(a) \ | |
161 | ( fputs ("\t.val\t", asm_out_file), \ | |
162 | output_addr_const (asm_out_file, (a)), \ | |
163 | fprintf (asm_out_file, SDB_DELIM)) | |
164 | #endif | |
165 | ||
166 | #ifndef PUT_SDB_DEF | |
167 | #define PUT_SDB_DEF(a) \ | |
168 | do { fprintf (asm_out_file, "\t.def\t"); \ | |
800a6a0c | 169 | assemble_name (asm_out_file, a); \ |
37ba3390 RS |
170 | fprintf (asm_out_file, SDB_DELIM); } while (0) |
171 | #endif | |
172 | ||
173 | #ifndef PUT_SDB_PLAIN_DEF | |
174 | #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM) | |
175 | #endif | |
176 | ||
177 | #ifndef PUT_SDB_ENDEF | |
178 | #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file) | |
179 | #endif | |
180 | ||
181 | #ifndef PUT_SDB_TYPE | |
182 | #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM) | |
183 | #endif | |
184 | ||
185 | #ifndef PUT_SDB_SIZE | |
e016950d KG |
186 | #define PUT_SDB_SIZE(a) \ |
187 | do { \ | |
188 | fputs ("\t.size\t", asm_out_file); \ | |
cf403648 | 189 | fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT) (a)); \ |
e016950d KG |
190 | fprintf (asm_out_file, "%s", SDB_DELIM); \ |
191 | } while(0) | |
37ba3390 RS |
192 | #endif |
193 | ||
194 | #ifndef PUT_SDB_START_DIM | |
195 | #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t") | |
196 | #endif | |
197 | ||
198 | #ifndef PUT_SDB_NEXT_DIM | |
199 | #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a) | |
200 | #endif | |
201 | ||
202 | #ifndef PUT_SDB_LAST_DIM | |
203 | #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM) | |
204 | #endif | |
205 | ||
206 | #ifndef PUT_SDB_TAG | |
207 | #define PUT_SDB_TAG(a) \ | |
208 | do { fprintf (asm_out_file, "\t.tag\t"); \ | |
800a6a0c | 209 | assemble_name (asm_out_file, a); \ |
37ba3390 RS |
210 | fprintf (asm_out_file, SDB_DELIM); } while (0) |
211 | #endif | |
212 | ||
213 | #ifndef PUT_SDB_BLOCK_START | |
214 | #define PUT_SDB_BLOCK_START(LINE) \ | |
215 | fprintf (asm_out_file, \ | |
216 | "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \ | |
217 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
218 | #endif | |
219 | ||
220 | #ifndef PUT_SDB_BLOCK_END | |
221 | #define PUT_SDB_BLOCK_END(LINE) \ | |
222 | fprintf (asm_out_file, \ | |
223 | "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \ | |
224 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
225 | #endif | |
226 | ||
227 | #ifndef PUT_SDB_FUNCTION_START | |
228 | #define PUT_SDB_FUNCTION_START(LINE) \ | |
229 | fprintf (asm_out_file, \ | |
230 | "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \ | |
231 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
232 | #endif | |
233 | ||
234 | #ifndef PUT_SDB_FUNCTION_END | |
235 | #define PUT_SDB_FUNCTION_END(LINE) \ | |
236 | fprintf (asm_out_file, \ | |
237 | "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \ | |
238 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
239 | #endif | |
240 | ||
37ba3390 RS |
241 | #ifndef SDB_GENERATE_FAKE |
242 | #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \ | |
243 | sprintf ((BUFFER), ".%dfake", (NUMBER)); | |
244 | #endif | |
245 | ||
246 | /* Return the sdb tag identifier string for TYPE | |
6d2f8887 | 247 | if TYPE has already been defined; otherwise return a null pointer. */ |
37ba3390 | 248 | |
6fb2e346 | 249 | #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type) |
37ba3390 RS |
250 | |
251 | /* Set the sdb tag identifier string for TYPE to NAME. */ | |
252 | ||
253 | #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \ | |
6fb2e346 | 254 | TYPE_SYMTAB_POINTER (TYPE) = (NAME) |
37ba3390 RS |
255 | |
256 | /* Return the name (a string) of the struct, union or enum tag | |
257 | described by the TREE_LIST node LINK. This is 0 for an anonymous one. */ | |
258 | ||
259 | #define TAG_NAME(link) \ | |
260 | (((link) && TREE_PURPOSE ((link)) \ | |
261 | && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \ | |
262 | ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0) | |
263 | ||
264 | /* Ensure we don't output a negative line number. */ | |
265 | #define MAKE_LINE_SAFE(line) \ | |
5197bd50 RK |
266 | if ((int) line <= sdb_begin_function_line) \ |
267 | line = sdb_begin_function_line + 1 | |
cc694a81 DE |
268 | |
269 | /* Perform linker optimization of merging header file definitions together | |
270 | for targets with MIPS_DEBUGGING_INFO defined. This won't work without a | |
271 | post 960826 version of GAS. Nothing breaks with earlier versions of GAS, | |
272 | the optimization just won't be done. The native assembler already has the | |
273 | necessary support. */ | |
274 | ||
275 | #ifdef MIPS_DEBUGGING_INFO | |
276 | ||
277 | #ifndef PUT_SDB_SRC_FILE | |
278 | #define PUT_SDB_SRC_FILE(FILENAME) \ | |
279 | output_file_directive (asm_out_file, (FILENAME)) | |
280 | #endif | |
281 | ||
282 | /* ECOFF linkers have an optimization that does the same kind of thing as | |
283 | N_BINCL/E_INCL in stabs: eliminate duplicate debug information in the | |
284 | executable. To achieve this, GCC must output a .file for each file | |
285 | name change. */ | |
286 | ||
287 | /* This is a stack of input files. */ | |
288 | ||
289 | struct sdb_file | |
290 | { | |
291 | struct sdb_file *next; | |
df07dc5b | 292 | const char *name; |
cc694a81 DE |
293 | }; |
294 | ||
295 | /* This is the top of the stack. */ | |
296 | ||
297 | static struct sdb_file *current_file; | |
298 | ||
299 | #endif /* MIPS_DEBUGGING_INFO */ | |
37ba3390 | 300 | \f |
7f905405 | 301 | /* The debug hooks structure. */ |
a51d908e NB |
302 | struct gcc_debug_hooks sdb_debug_hooks = |
303 | { | |
3914abb4 NB |
304 | sdbout_init, /* init */ |
305 | sdbout_finish, /* finish */ | |
306 | debug_nothing_int_charstar, /* define */ | |
307 | debug_nothing_int_charstar, /* undef */ | |
308 | sdbout_start_source_file, /* start_source_file */ | |
309 | sdbout_end_source_file, /* end_source_file */ | |
310 | sdbout_begin_block, /* begin_block */ | |
311 | sdbout_end_block, /* end_block */ | |
e1772ac0 | 312 | debug_true_tree, /* ignore_block */ |
3914abb4 | 313 | sdbout_source_line, /* source_line */ |
653e276c NB |
314 | #ifdef MIPS_DEBUGGING_INFO |
315 | /* Defer on MIPS systems so that parameter descriptions follow | |
316 | function entry. */ | |
317 | debug_nothing_int_charstar, /* begin_prologue */ | |
318 | sdbout_end_prologue, /* end_prologue */ | |
319 | #else | |
320 | sdbout_begin_prologue, /* begin_prologue */ | |
321 | debug_nothing_int, /* end_prologue */ | |
322 | #endif | |
3914abb4 NB |
323 | sdbout_end_epilogue, /* end_epilogue */ |
324 | sdbout_begin_function, /* begin_function */ | |
325 | sdbout_end_function, /* end_function */ | |
2b85879e | 326 | debug_nothing_tree, /* function_decl */ |
3914abb4 | 327 | sdbout_global_decl, /* global_decl */ |
e1772ac0 NB |
328 | debug_nothing_tree, /* deferred_inline_function */ |
329 | debug_nothing_tree, /* outlining_inline_function */ | |
330 | sdbout_label | |
a51d908e NB |
331 | }; |
332 | \f | |
37ba3390 RS |
333 | #if 0 |
334 | ||
335 | /* return the tag identifier for type | |
336 | */ | |
337 | ||
338 | char * | |
339 | tag_of_ru_type (type,link) | |
340 | tree type,link; | |
341 | { | |
342 | if (TYPE_SYMTAB_ADDRESS (type)) | |
6fb2e346 | 343 | return TYPE_SYMTAB_ADDRESS (type); |
37ba3390 RS |
344 | if (link && TREE_PURPOSE (link) |
345 | && IDENTIFIER_POINTER (TREE_PURPOSE (link))) | |
6fb2e346 | 346 | TYPE_SYMTAB_ADDRESS (type) = IDENTIFIER_POINTER (TREE_PURPOSE (link)); |
37ba3390 RS |
347 | else |
348 | return (char *) TYPE_SYMTAB_ADDRESS (type); | |
349 | } | |
350 | #endif | |
351 | ||
352 | /* Return a unique string to name an anonymous type. */ | |
353 | ||
354 | static char * | |
355 | gen_fake_label () | |
356 | { | |
357 | char label[10]; | |
358 | char *labelstr; | |
359 | SDB_GENERATE_FAKE (label, unnamed_struct_number); | |
360 | unnamed_struct_number++; | |
361 | labelstr = (char *) permalloc (strlen (label) + 1); | |
362 | strcpy (labelstr, label); | |
363 | return labelstr; | |
364 | } | |
365 | \f | |
366 | /* Return the number which describes TYPE for SDB. | |
367 | For pointers, etc., this function is recursive. | |
368 | Each record, union or enumeral type must already have had a | |
369 | tag number output. */ | |
370 | ||
371 | /* The number is given by d6d5d4d3d2d1bbbb | |
372 | where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array. | |
373 | Thus, char *foo () has bbbb=T_CHAR | |
374 | d1=D_FCN | |
375 | d2=D_PTR | |
376 | N_BTMASK= 017 1111 basic type field. | |
377 | N_TSHIFT= 2 derived type shift | |
378 | N_BTSHFT= 4 Basic type shift */ | |
379 | ||
380 | /* Produce the number that describes a pointer, function or array type. | |
381 | PREV is the number describing the target, value or element type. | |
382 | DT_type describes how to transform that type. */ | |
aa7a5913 | 383 | #define PUSH_DERIVED_LEVEL(DT_type,PREV) \ |
cf403648 KH |
384 | ((((PREV) & ~(int) N_BTMASK) << (int) N_TSHIFT) \ |
385 | | ((int) DT_type << (int) N_BTSHFT) \ | |
386 | | ((PREV) & (int) N_BTMASK)) | |
37ba3390 RS |
387 | |
388 | /* Number of elements used in sdb_dims. */ | |
389 | static int sdb_n_dims = 0; | |
390 | ||
391 | /* Table of array dimensions of current type. */ | |
392 | static int sdb_dims[SDB_MAX_DIM]; | |
393 | ||
394 | /* Size of outermost array currently being processed. */ | |
395 | static int sdb_type_size = -1; | |
396 | ||
397 | static int | |
398 | plain_type (type) | |
399 | tree type; | |
400 | { | |
1a625283 | 401 | int val = plain_type_1 (type, 0); |
37ba3390 RS |
402 | |
403 | /* If we have already saved up some array dimensions, print them now. */ | |
404 | if (sdb_n_dims > 0) | |
405 | { | |
406 | int i; | |
407 | PUT_SDB_START_DIM; | |
408 | for (i = sdb_n_dims - 1; i > 0; i--) | |
409 | PUT_SDB_NEXT_DIM (sdb_dims[i]); | |
410 | PUT_SDB_LAST_DIM (sdb_dims[0]); | |
411 | sdb_n_dims = 0; | |
412 | ||
413 | sdb_type_size = int_size_in_bytes (type); | |
414 | /* Don't kill sdb if type is not laid out or has variable size. */ | |
415 | if (sdb_type_size < 0) | |
416 | sdb_type_size = 0; | |
417 | } | |
418 | /* If we have computed the size of an array containing this type, | |
419 | print it now. */ | |
420 | if (sdb_type_size >= 0) | |
421 | { | |
422 | PUT_SDB_SIZE (sdb_type_size); | |
423 | sdb_type_size = -1; | |
424 | } | |
425 | return val; | |
426 | } | |
427 | ||
4be2397b RS |
428 | static int |
429 | template_name_p (name) | |
430 | tree name; | |
431 | { | |
b3694847 | 432 | const char *ptr = IDENTIFIER_POINTER (name); |
4be2397b RS |
433 | while (*ptr && *ptr != '<') |
434 | ptr++; | |
435 | ||
436 | return *ptr != '\0'; | |
437 | } | |
438 | ||
37ba3390 RS |
439 | static void |
440 | sdbout_record_type_name (type) | |
441 | tree type; | |
442 | { | |
bb93b973 | 443 | const char *name = 0; |
37ba3390 RS |
444 | int no_name; |
445 | ||
446 | if (KNOWN_TYPE_TAG (type)) | |
447 | return; | |
448 | ||
449 | if (TYPE_NAME (type) != 0) | |
450 | { | |
451 | tree t = 0; | |
bb93b973 | 452 | |
37ba3390 RS |
453 | /* Find the IDENTIFIER_NODE for the type name. */ |
454 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
95b2ff8b | 455 | t = TYPE_NAME (type); |
12357e42 | 456 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) |
37ba3390 RS |
457 | { |
458 | t = DECL_NAME (TYPE_NAME (type)); | |
4be2397b RS |
459 | /* The DECL_NAME for templates includes "<>", which breaks |
460 | most assemblers. Use its assembler name instead, which | |
461 | has been mangled into being safe. */ | |
462 | if (t && template_name_p (t)) | |
463 | t = DECL_ASSEMBLER_NAME (TYPE_NAME (type)); | |
37ba3390 | 464 | } |
37ba3390 RS |
465 | |
466 | /* Now get the name as a string, or invent one. */ | |
4be2397b | 467 | if (t != NULL_TREE) |
37ba3390 RS |
468 | name = IDENTIFIER_POINTER (t); |
469 | } | |
470 | ||
471 | no_name = (name == 0 || *name == 0); | |
472 | if (no_name) | |
473 | name = gen_fake_label (); | |
474 | ||
475 | SET_KNOWN_TYPE_TAG (type, name); | |
476 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
477 | if (no_name) | |
478 | sdbout_queue_anonymous_type (type); | |
479 | #endif | |
480 | } | |
481 | ||
1a625283 JW |
482 | /* Return the .type value for type TYPE. |
483 | ||
484 | LEVEL indicates how many levels deep we have recursed into the type. | |
485 | The SDB debug format can only represent 6 derived levels of types. | |
486 | After that, we must output inaccurate debug info. We deliberately | |
487 | stop before the 7th level, so that ADA recursive types will not give an | |
488 | infinite loop. */ | |
489 | ||
37ba3390 | 490 | static int |
1a625283 | 491 | plain_type_1 (type, level) |
37ba3390 | 492 | tree type; |
1a625283 | 493 | int level; |
37ba3390 RS |
494 | { |
495 | if (type == 0) | |
496 | type = void_type_node; | |
1a625283 | 497 | else if (type == error_mark_node) |
37ba3390 | 498 | type = integer_type_node; |
1a625283 JW |
499 | else |
500 | type = TYPE_MAIN_VARIANT (type); | |
37ba3390 RS |
501 | |
502 | switch (TREE_CODE (type)) | |
503 | { | |
504 | case VOID_TYPE: | |
505 | return T_VOID; | |
a0587d56 | 506 | case BOOLEAN_TYPE: |
37ba3390 RS |
507 | case INTEGER_TYPE: |
508 | { | |
509 | int size = int_size_in_bytes (type) * BITS_PER_UNIT; | |
aed0ae9b JW |
510 | |
511 | /* Carefully distinguish all the standard types of C, | |
512 | without messing up if the language is not C. | |
513 | Note that we check only for the names that contain spaces; | |
514 | other names might occur by coincidence in other languages. */ | |
515 | if (TYPE_NAME (type) != 0 | |
516 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
517 | && DECL_NAME (TYPE_NAME (type)) != 0 | |
518 | && TREE_CODE (DECL_NAME (TYPE_NAME (type))) == IDENTIFIER_NODE) | |
519 | { | |
83182544 | 520 | const char *const name |
ebb13e7e | 521 | = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))); |
aed0ae9b | 522 | |
c85f7c16 JL |
523 | if (!strcmp (name, "char")) |
524 | return T_CHAR; | |
aed0ae9b JW |
525 | if (!strcmp (name, "unsigned char")) |
526 | return T_UCHAR; | |
527 | if (!strcmp (name, "signed char")) | |
528 | return T_CHAR; | |
c85f7c16 JL |
529 | if (!strcmp (name, "int")) |
530 | return T_INT; | |
aed0ae9b JW |
531 | if (!strcmp (name, "unsigned int")) |
532 | return T_UINT; | |
533 | if (!strcmp (name, "short int")) | |
534 | return T_SHORT; | |
535 | if (!strcmp (name, "short unsigned int")) | |
536 | return T_USHORT; | |
537 | if (!strcmp (name, "long int")) | |
538 | return T_LONG; | |
539 | if (!strcmp (name, "long unsigned int")) | |
540 | return T_ULONG; | |
541 | } | |
542 | ||
c85f7c16 JL |
543 | if (size == INT_TYPE_SIZE) |
544 | return (TREE_UNSIGNED (type) ? T_UINT : T_INT); | |
37ba3390 RS |
545 | if (size == CHAR_TYPE_SIZE) |
546 | return (TREE_UNSIGNED (type) ? T_UCHAR : T_CHAR); | |
547 | if (size == SHORT_TYPE_SIZE) | |
548 | return (TREE_UNSIGNED (type) ? T_USHORT : T_SHORT); | |
580b8ee2 RS |
549 | if (size == LONG_TYPE_SIZE) |
550 | return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG); | |
7726fc45 RK |
551 | if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */ |
552 | return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG); | |
37ba3390 RS |
553 | return 0; |
554 | } | |
555 | ||
556 | case REAL_TYPE: | |
557 | { | |
64c6526a JW |
558 | int precision = TYPE_PRECISION (type); |
559 | if (precision == FLOAT_TYPE_SIZE) | |
37ba3390 | 560 | return T_FLOAT; |
64c6526a | 561 | if (precision == DOUBLE_TYPE_SIZE) |
37ba3390 | 562 | return T_DOUBLE; |
64c6526a JW |
563 | #ifdef EXTENDED_SDB_BASIC_TYPES |
564 | if (precision == LONG_DOUBLE_TYPE_SIZE) | |
565 | return T_LNGDBL; | |
e5e809f4 JL |
566 | #else |
567 | if (precision == LONG_DOUBLE_TYPE_SIZE) | |
568 | return T_DOUBLE; /* better than nothing */ | |
64c6526a | 569 | #endif |
37ba3390 RS |
570 | return 0; |
571 | } | |
572 | ||
573 | case ARRAY_TYPE: | |
574 | { | |
575 | int m; | |
1a625283 JW |
576 | if (level >= 6) |
577 | return T_VOID; | |
578 | else | |
579 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
37ba3390 RS |
580 | if (sdb_n_dims < SDB_MAX_DIM) |
581 | sdb_dims[sdb_n_dims++] | |
582 | = (TYPE_DOMAIN (type) | |
665f2503 RK |
583 | && TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != 0 |
584 | && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != 0 | |
585 | && host_integerp (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0) | |
586 | && host_integerp (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) | |
587 | ? (tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0) | |
588 | - tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) + 1) | |
37ba3390 | 589 | : 0); |
665f2503 | 590 | |
37ba3390 RS |
591 | return PUSH_DERIVED_LEVEL (DT_ARY, m); |
592 | } | |
593 | ||
594 | case RECORD_TYPE: | |
595 | case UNION_TYPE: | |
c1b98a95 | 596 | case QUAL_UNION_TYPE: |
37ba3390 RS |
597 | case ENUMERAL_TYPE: |
598 | { | |
599 | char *tag; | |
600 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
601 | sdbout_record_type_name (type); | |
602 | #endif | |
603 | #ifndef SDB_ALLOW_UNKNOWN_REFERENCES | |
604 | if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0) | |
605 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
606 | || TYPE_MODE (type) != VOIDmode | |
607 | #endif | |
608 | ) | |
609 | #endif | |
610 | { | |
611 | /* Output the referenced structure tag name | |
612 | only if the .def has already been finished. | |
613 | At least on 386, the Unix assembler | |
614 | cannot handle forward references to tags. */ | |
0f41302f MS |
615 | /* But the 88100, it requires them, sigh... */ |
616 | /* And the MIPS requires unknown refs as well... */ | |
37ba3390 RS |
617 | tag = KNOWN_TYPE_TAG (type); |
618 | PUT_SDB_TAG (tag); | |
619 | /* These 3 lines used to follow the close brace. | |
620 | However, a size of 0 without a tag implies a tag of 0, | |
621 | so if we don't know a tag, we can't mention the size. */ | |
622 | sdb_type_size = int_size_in_bytes (type); | |
623 | if (sdb_type_size < 0) | |
624 | sdb_type_size = 0; | |
625 | } | |
626 | return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT | |
627 | : (TREE_CODE (type) == UNION_TYPE) ? T_UNION | |
c1b98a95 | 628 | : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION |
37ba3390 RS |
629 | : T_ENUM); |
630 | } | |
631 | case POINTER_TYPE: | |
632 | case REFERENCE_TYPE: | |
633 | { | |
1a625283 JW |
634 | int m; |
635 | if (level >= 6) | |
636 | return T_VOID; | |
637 | else | |
638 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
37ba3390 RS |
639 | return PUSH_DERIVED_LEVEL (DT_PTR, m); |
640 | } | |
641 | case FUNCTION_TYPE: | |
642 | case METHOD_TYPE: | |
643 | { | |
1a625283 JW |
644 | int m; |
645 | if (level >= 6) | |
646 | return T_VOID; | |
647 | else | |
648 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
37ba3390 RS |
649 | return PUSH_DERIVED_LEVEL (DT_FCN, m); |
650 | } | |
651 | default: | |
652 | return 0; | |
653 | } | |
654 | } | |
655 | \f | |
656 | /* Output the symbols defined in block number DO_BLOCK. | |
37ba3390 RS |
657 | |
658 | This function works by walking the tree structure of blocks, | |
659 | counting blocks until it finds the desired block. */ | |
660 | ||
661 | static int do_block = 0; | |
662 | ||
37ba3390 RS |
663 | static void |
664 | sdbout_block (block) | |
b3694847 | 665 | tree block; |
37ba3390 RS |
666 | { |
667 | while (block) | |
668 | { | |
669 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
670 | if (TREE_USED (block)) | |
671 | { | |
672 | /* When we reach the specified block, output its symbols. */ | |
18c038b9 MM |
673 | if (BLOCK_NUMBER (block) == do_block) |
674 | sdbout_syms (BLOCK_VARS (block)); | |
37ba3390 RS |
675 | |
676 | /* If we are past the specified block, stop the scan. */ | |
18c038b9 | 677 | if (BLOCK_NUMBER (block) > do_block) |
37ba3390 RS |
678 | return; |
679 | ||
37ba3390 RS |
680 | /* Scan the blocks within this block. */ |
681 | sdbout_block (BLOCK_SUBBLOCKS (block)); | |
682 | } | |
683 | ||
684 | block = BLOCK_CHAIN (block); | |
685 | } | |
686 | } | |
687 | \f | |
688 | /* Call sdbout_symbol on each decl in the chain SYMS. */ | |
689 | ||
690 | static void | |
691 | sdbout_syms (syms) | |
692 | tree syms; | |
693 | { | |
694 | while (syms) | |
695 | { | |
5b7f1820 RS |
696 | if (TREE_CODE (syms) != LABEL_DECL) |
697 | sdbout_symbol (syms, 1); | |
37ba3390 RS |
698 | syms = TREE_CHAIN (syms); |
699 | } | |
700 | } | |
701 | ||
702 | /* Output SDB information for a symbol described by DECL. | |
703 | LOCAL is nonzero if the symbol is not file-scope. */ | |
704 | ||
705 | void | |
706 | sdbout_symbol (decl, local) | |
707 | tree decl; | |
708 | int local; | |
709 | { | |
37ba3390 RS |
710 | tree type = TREE_TYPE (decl); |
711 | tree context = NULL_TREE; | |
712 | rtx value; | |
713 | int regno = -1; | |
ebb13e7e | 714 | const char *name; |
37ba3390 | 715 | |
16d90796 RS |
716 | sdbout_one_type (type); |
717 | ||
718 | #if 0 /* This loses when functions are marked to be ignored, | |
719 | which happens in the C++ front end. */ | |
5e32e83b RS |
720 | if (DECL_IGNORED_P (decl)) |
721 | return; | |
16d90796 | 722 | #endif |
37ba3390 RS |
723 | |
724 | switch (TREE_CODE (decl)) | |
725 | { | |
726 | case CONST_DECL: | |
727 | /* Enum values are defined by defining the enum type. */ | |
728 | return; | |
729 | ||
730 | case FUNCTION_DECL: | |
731 | /* Don't mention a nested function under its parent. */ | |
732 | context = decl_function_context (decl); | |
733 | if (context == current_function_decl) | |
734 | return; | |
b01a1fdb JW |
735 | /* Check DECL_INITIAL to distinguish declarations from definitions. |
736 | Don't output debug info here for declarations; they will have | |
737 | a DECL_INITIAL value of 0. */ | |
738 | if (! DECL_INITIAL (decl)) | |
37ba3390 RS |
739 | return; |
740 | if (GET_CODE (DECL_RTL (decl)) != MEM | |
741 | || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF) | |
742 | return; | |
743 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
744 | PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
745 | PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT); | |
746 | break; | |
747 | ||
748 | case TYPE_DECL: | |
749 | /* Done with tagged types. */ | |
750 | if (DECL_NAME (decl) == 0) | |
751 | return; | |
16d90796 RS |
752 | if (DECL_IGNORED_P (decl)) |
753 | return; | |
37ba3390 RS |
754 | |
755 | /* Output typedef name. */ | |
4be2397b RS |
756 | if (template_name_p (DECL_NAME (decl))) |
757 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
758 | else | |
759 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl))); | |
37ba3390 RS |
760 | PUT_SDB_SCL (C_TPDEF); |
761 | break; | |
762 | ||
763 | case PARM_DECL: | |
764 | /* Parm decls go in their own separate chains | |
765 | and are output by sdbout_reg_parms and sdbout_parms. */ | |
766 | abort (); | |
767 | ||
768 | case VAR_DECL: | |
769 | /* Don't mention a variable that is external. | |
770 | Let the file that defines it describe it. */ | |
216d5cdd | 771 | if (DECL_EXTERNAL (decl)) |
37ba3390 RS |
772 | return; |
773 | ||
16d90796 RS |
774 | /* Ignore __FUNCTION__, etc. */ |
775 | if (DECL_IGNORED_P (decl)) | |
776 | return; | |
777 | ||
37ba3390 RS |
778 | /* If there was an error in the declaration, don't dump core |
779 | if there is no RTL associated with the variable doesn't | |
780 | exist. */ | |
d975d8c3 | 781 | if (!DECL_RTL_SET_P (decl)) |
37ba3390 RS |
782 | return; |
783 | ||
d975d8c3 MM |
784 | SET_DECL_RTL (decl, |
785 | eliminate_regs (DECL_RTL (decl), 0, NULL_RTX)); | |
bf1e8c4d | 786 | #ifdef LEAF_REG_REMAP |
54ff41b7 | 787 | if (current_function_uses_only_leaf_regs) |
bf1e8c4d RS |
788 | leaf_renumber_regs_insn (DECL_RTL (decl)); |
789 | #endif | |
790 | value = DECL_RTL (decl); | |
37ba3390 RS |
791 | |
792 | /* Don't mention a variable at all | |
793 | if it was completely optimized into nothingness. | |
794 | ||
795 | If DECL was from an inline function, then its rtl | |
796 | is not identically the rtl that was used in this | |
797 | particular compilation. */ | |
798 | if (GET_CODE (value) == REG) | |
799 | { | |
69deb6e0 | 800 | regno = REGNO (value); |
37ba3390 | 801 | if (regno >= FIRST_PSEUDO_REGISTER) |
37ba3390 RS |
802 | return; |
803 | } | |
bf1e8c4d | 804 | else if (GET_CODE (value) == SUBREG) |
37ba3390 | 805 | { |
37ba3390 | 806 | while (GET_CODE (value) == SUBREG) |
ddef6bc7 | 807 | value = SUBREG_REG (value); |
37ba3390 RS |
808 | if (GET_CODE (value) == REG) |
809 | { | |
ddef6bc7 | 810 | if (REGNO (value) >= FIRST_PSEUDO_REGISTER) |
bf1e8c4d | 811 | return; |
37ba3390 | 812 | } |
69deb6e0 RK |
813 | regno = REGNO (alter_subreg (&value)); |
814 | SET_DECL_RTL (decl, value); | |
37ba3390 | 815 | } |
39eae9f4 RS |
816 | /* Don't output anything if an auto variable |
817 | gets RTL that is static. | |
818 | GAS version 2.2 can't handle such output. */ | |
819 | else if (GET_CODE (value) == MEM && CONSTANT_P (XEXP (value, 0)) | |
820 | && ! TREE_STATIC (decl)) | |
821 | return; | |
37ba3390 RS |
822 | |
823 | /* Emit any structure, union, or enum type that has not been output. | |
824 | This occurs for tag-less structs (et al) used to declare variables | |
825 | within functions. */ | |
826 | if (TREE_CODE (type) == ENUMERAL_TYPE | |
827 | || TREE_CODE (type) == RECORD_TYPE | |
c1b98a95 RK |
828 | || TREE_CODE (type) == UNION_TYPE |
829 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
37ba3390 | 830 | { |
d0f062fb | 831 | if (COMPLETE_TYPE_P (type) /* not a forward reference */ |
37ba3390 RS |
832 | && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */ |
833 | sdbout_one_type (type); | |
834 | } | |
835 | ||
836 | /* Defer SDB information for top-level initialized variables! */ | |
837 | if (! local | |
838 | && GET_CODE (value) == MEM | |
839 | && DECL_INITIAL (decl)) | |
840 | return; | |
841 | ||
ed5f8355 RS |
842 | /* C++ in 2.3 makes nameless symbols. That will be fixed later. |
843 | For now, avoid crashing. */ | |
844 | if (DECL_NAME (decl) == NULL_TREE) | |
845 | return; | |
846 | ||
37ba3390 | 847 | /* Record the name for, starting a symtab entry. */ |
4eadbbd5 RK |
848 | if (local) |
849 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
850 | else | |
851 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); | |
37ba3390 RS |
852 | |
853 | if (GET_CODE (value) == MEM | |
854 | && GET_CODE (XEXP (value, 0)) == SYMBOL_REF) | |
855 | { | |
856 | PUT_SDB_DEF (name); | |
857 | if (TREE_PUBLIC (decl)) | |
858 | { | |
859 | PUT_SDB_VAL (XEXP (value, 0)); | |
860 | PUT_SDB_SCL (C_EXT); | |
861 | } | |
862 | else | |
863 | { | |
864 | PUT_SDB_VAL (XEXP (value, 0)); | |
865 | PUT_SDB_SCL (C_STAT); | |
866 | } | |
867 | } | |
868 | else if (regno >= 0) | |
869 | { | |
870 | PUT_SDB_DEF (name); | |
871 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno)); | |
872 | PUT_SDB_SCL (C_REG); | |
873 | } | |
874 | else if (GET_CODE (value) == MEM | |
875 | && (GET_CODE (XEXP (value, 0)) == MEM | |
876 | || (GET_CODE (XEXP (value, 0)) == REG | |
d8a0edf4 | 877 | && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM |
5b7f1820 | 878 | && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM))) |
37ba3390 RS |
879 | /* If the value is indirect by memory or by a register |
880 | that isn't the frame pointer | |
881 | then it means the object is variable-sized and address through | |
882 | that register or stack slot. COFF has no way to represent this | |
883 | so all we can do is output the variable as a pointer. */ | |
884 | { | |
885 | PUT_SDB_DEF (name); | |
886 | if (GET_CODE (XEXP (value, 0)) == REG) | |
887 | { | |
888 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0)))); | |
889 | PUT_SDB_SCL (C_REG); | |
890 | } | |
891 | else | |
892 | { | |
893 | /* DECL_RTL looks like (MEM (MEM (PLUS (REG...) | |
894 | (CONST_INT...)))). | |
895 | We want the value of that CONST_INT. */ | |
896 | /* Encore compiler hates a newline in a macro arg, it seems. */ | |
897 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
898 | (XEXP (XEXP (value, 0), 0))); | |
899 | PUT_SDB_SCL (C_AUTO); | |
900 | } | |
901 | ||
a51a5234 JL |
902 | /* Effectively do build_pointer_type, but don't cache this type, |
903 | since it might be temporary whereas the type it points to | |
904 | might have been saved for inlining. */ | |
905 | /* Don't use REFERENCE_TYPE because dbx can't handle that. */ | |
906 | type = make_node (POINTER_TYPE); | |
907 | TREE_TYPE (type) = TREE_TYPE (decl); | |
37ba3390 RS |
908 | } |
909 | else if (GET_CODE (value) == MEM | |
6d55e0ab JW |
910 | && ((GET_CODE (XEXP (value, 0)) == PLUS |
911 | && GET_CODE (XEXP (XEXP (value, 0), 0)) == REG | |
912 | && GET_CODE (XEXP (XEXP (value, 0), 1)) == CONST_INT) | |
913 | /* This is for variables which are at offset zero from | |
914 | the frame pointer. This happens on the Alpha. | |
915 | Non-frame pointer registers are excluded above. */ | |
916 | || (GET_CODE (XEXP (value, 0)) == REG))) | |
37ba3390 | 917 | { |
6d55e0ab JW |
918 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) |
919 | or (MEM (REG...)). We want the value of that CONST_INT | |
920 | or zero. */ | |
37ba3390 RS |
921 | PUT_SDB_DEF (name); |
922 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0))); | |
923 | PUT_SDB_SCL (C_AUTO); | |
924 | } | |
5b7f1820 RS |
925 | else if (GET_CODE (value) == MEM && GET_CODE (XEXP (value, 0)) == CONST) |
926 | { | |
927 | /* Handle an obscure case which can arise when optimizing and | |
928 | when there are few available registers. (This is *always* | |
929 | the case for i386/i486 targets). The DECL_RTL looks like | |
930 | (MEM (CONST ...)) even though this variable is a local `auto' | |
931 | or a local `register' variable. In effect, what has happened | |
932 | is that the reload pass has seen that all assignments and | |
933 | references for one such a local variable can be replaced by | |
934 | equivalent assignments and references to some static storage | |
935 | variable, thereby avoiding the need for a register. In such | |
936 | cases we're forced to lie to debuggers and tell them that | |
937 | this variable was itself `static'. */ | |
938 | PUT_SDB_DEF (name); | |
939 | PUT_SDB_VAL (XEXP (XEXP (value, 0), 0)); | |
940 | PUT_SDB_SCL (C_STAT); | |
941 | } | |
37ba3390 RS |
942 | else |
943 | { | |
944 | /* It is something we don't know how to represent for SDB. */ | |
945 | return; | |
946 | } | |
947 | break; | |
1d300e19 KG |
948 | |
949 | default: | |
950 | break; | |
37ba3390 RS |
951 | } |
952 | PUT_SDB_TYPE (plain_type (type)); | |
953 | PUT_SDB_ENDEF; | |
954 | } | |
955 | \f | |
956 | /* Output SDB information for a top-level initialized variable | |
957 | that has been delayed. */ | |
958 | ||
e1772ac0 | 959 | static void |
37ba3390 RS |
960 | sdbout_toplevel_data (decl) |
961 | tree decl; | |
962 | { | |
963 | tree type = TREE_TYPE (decl); | |
964 | ||
5e32e83b RS |
965 | if (DECL_IGNORED_P (decl)) |
966 | return; | |
967 | ||
37ba3390 RS |
968 | if (! (TREE_CODE (decl) == VAR_DECL |
969 | && GET_CODE (DECL_RTL (decl)) == MEM | |
970 | && DECL_INITIAL (decl))) | |
971 | abort (); | |
972 | ||
973 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
974 | PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
975 | if (TREE_PUBLIC (decl)) | |
976 | { | |
977 | PUT_SDB_SCL (C_EXT); | |
978 | } | |
979 | else | |
980 | { | |
981 | PUT_SDB_SCL (C_STAT); | |
982 | } | |
983 | PUT_SDB_TYPE (plain_type (type)); | |
984 | PUT_SDB_ENDEF; | |
985 | } | |
986 | \f | |
987 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
988 | ||
0f41302f | 989 | /* Machinery to record and output anonymous types. */ |
37ba3390 RS |
990 | |
991 | static tree anonymous_types; | |
992 | ||
993 | static void | |
994 | sdbout_queue_anonymous_type (type) | |
995 | tree type; | |
996 | { | |
1f8f4a0b | 997 | anonymous_types = tree_cons (NULL_TREE, type, anonymous_types); |
37ba3390 RS |
998 | } |
999 | ||
1000 | static void | |
1001 | sdbout_dequeue_anonymous_types () | |
1002 | { | |
b3694847 | 1003 | tree types, link; |
37ba3390 RS |
1004 | |
1005 | while (anonymous_types) | |
1006 | { | |
1007 | types = nreverse (anonymous_types); | |
1008 | anonymous_types = NULL_TREE; | |
1009 | ||
1010 | for (link = types; link; link = TREE_CHAIN (link)) | |
1011 | { | |
b3694847 | 1012 | tree type = TREE_VALUE (link); |
37ba3390 | 1013 | |
c325abbd | 1014 | if (type && ! TREE_ASM_WRITTEN (type)) |
37ba3390 RS |
1015 | sdbout_one_type (type); |
1016 | } | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | #endif | |
1021 | \f | |
1022 | /* Given a chain of ..._TYPE nodes, all of which have names, | |
1023 | output definitions of those names, as typedefs. */ | |
1024 | ||
1025 | void | |
1026 | sdbout_types (types) | |
b3694847 | 1027 | tree types; |
37ba3390 | 1028 | { |
b3694847 | 1029 | tree link; |
37ba3390 RS |
1030 | |
1031 | for (link = types; link; link = TREE_CHAIN (link)) | |
1032 | sdbout_one_type (link); | |
1033 | ||
1034 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1035 | sdbout_dequeue_anonymous_types (); | |
1036 | #endif | |
1037 | } | |
1038 | ||
1039 | static void | |
1040 | sdbout_type (type) | |
1041 | tree type; | |
1042 | { | |
37ba3390 RS |
1043 | if (type == error_mark_node) |
1044 | type = integer_type_node; | |
1045 | PUT_SDB_TYPE (plain_type (type)); | |
1046 | } | |
1047 | ||
1048 | /* Output types of the fields of type TYPE, if they are structs. | |
1049 | ||
1050 | Formerly did not chase through pointer types, since that could be circular. | |
1051 | They must come before TYPE, since forward refs are not allowed. | |
1052 | Now james@bigtex.cactus.org says to try them. */ | |
1053 | ||
1054 | static void | |
1055 | sdbout_field_types (type) | |
1056 | tree type; | |
1057 | { | |
1058 | tree tail; | |
e5e809f4 | 1059 | |
37ba3390 | 1060 | for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail)) |
1270a9b3 LB |
1061 | /* This condition should match the one for emitting the actual |
1062 | members below. */ | |
0dbb7a10 | 1063 | if (TREE_CODE (tail) == FIELD_DECL |
1270a9b3 LB |
1064 | && DECL_NAME (tail) |
1065 | && DECL_SIZE (tail) | |
1066 | && host_integerp (DECL_SIZE (tail), 1) | |
1067 | && host_integerp (bit_position (tail), 0)) | |
0dbb7a10 JM |
1068 | { |
1069 | if (POINTER_TYPE_P (TREE_TYPE (tail))) | |
1070 | sdbout_one_type (TREE_TYPE (TREE_TYPE (tail))); | |
1071 | else | |
1072 | sdbout_one_type (TREE_TYPE (tail)); | |
1073 | } | |
37ba3390 RS |
1074 | } |
1075 | ||
1076 | /* Use this to put out the top level defined record and union types | |
1077 | for later reference. If this is a struct with a name, then put that | |
1078 | name out. Other unnamed structs will have .xxfake labels generated so | |
1079 | that they may be referred to later. | |
1080 | The label will be stored in the KNOWN_TYPE_TAG slot of a type. | |
1081 | It may NOT be called recursively. */ | |
1082 | ||
1083 | static void | |
1084 | sdbout_one_type (type) | |
1085 | tree type; | |
1086 | { | |
509b12e0 JW |
1087 | if (current_function_decl != NULL_TREE |
1088 | && DECL_SECTION_NAME (current_function_decl) != NULL_TREE) | |
1089 | ; /* Don't change section amid function. */ | |
1090 | else | |
1091 | text_section (); | |
37ba3390 RS |
1092 | |
1093 | switch (TREE_CODE (type)) | |
1094 | { | |
1095 | case RECORD_TYPE: | |
1096 | case UNION_TYPE: | |
c1b98a95 | 1097 | case QUAL_UNION_TYPE: |
37ba3390 RS |
1098 | case ENUMERAL_TYPE: |
1099 | type = TYPE_MAIN_VARIANT (type); | |
1100 | /* Don't output a type twice. */ | |
1101 | if (TREE_ASM_WRITTEN (type)) | |
1102 | /* James said test TREE_ASM_BEING_WRITTEN here. */ | |
1103 | return; | |
1104 | ||
1105 | /* Output nothing if type is not yet defined. */ | |
d0f062fb | 1106 | if (!COMPLETE_TYPE_P (type)) |
37ba3390 RS |
1107 | return; |
1108 | ||
1109 | TREE_ASM_WRITTEN (type) = 1; | |
1110 | #if 1 | |
1111 | /* This is reputed to cause trouble with the following case, | |
638e2294 | 1112 | but perhaps checking TYPE_SIZE above will fix it. */ |
37ba3390 RS |
1113 | |
1114 | /* Here is a test case: | |
1115 | ||
1116 | struct foo { | |
1117 | struct badstr *bbb; | |
1118 | } forwardref; | |
1119 | ||
1120 | typedef struct intermediate { | |
1121 | int aaaa; | |
1122 | } intermediate_ref; | |
1123 | ||
1124 | typedef struct badstr { | |
1125 | int ccccc; | |
1126 | } badtype; */ | |
1127 | ||
1128 | #if 0 | |
1129 | TREE_ASM_BEING_WRITTEN (type) = 1; | |
1130 | #endif | |
1131 | /* This change, which ought to make better output, | |
1132 | used to make the COFF assembler unhappy. | |
1133 | Changes involving KNOWN_TYPE_TAG may fix the problem. */ | |
1134 | /* Before really doing anything, output types we want to refer to. */ | |
1135 | /* Note that in version 1 the following two lines | |
1136 | are not used if forward references are in use. */ | |
1137 | if (TREE_CODE (type) != ENUMERAL_TYPE) | |
1138 | sdbout_field_types (type); | |
1139 | #if 0 | |
1140 | TREE_ASM_WRITTEN (type) = 1; | |
1141 | #endif | |
1142 | #endif | |
1143 | ||
1144 | /* Output a structure type. */ | |
1145 | { | |
1146 | int size = int_size_in_bytes (type); | |
a544cfd2 | 1147 | int member_scl = 0; |
37ba3390 | 1148 | tree tem; |
5b7f1820 | 1149 | int i, n_baseclasses = 0; |
37ba3390 RS |
1150 | |
1151 | /* Record the type tag, but not in its permanent place just yet. */ | |
1152 | sdbout_record_type_name (type); | |
1153 | ||
1154 | PUT_SDB_DEF (KNOWN_TYPE_TAG (type)); | |
1155 | ||
1156 | switch (TREE_CODE (type)) | |
1157 | { | |
1158 | case UNION_TYPE: | |
c1b98a95 | 1159 | case QUAL_UNION_TYPE: |
37ba3390 RS |
1160 | PUT_SDB_SCL (C_UNTAG); |
1161 | PUT_SDB_TYPE (T_UNION); | |
1162 | member_scl = C_MOU; | |
1163 | break; | |
1164 | ||
1165 | case RECORD_TYPE: | |
1166 | PUT_SDB_SCL (C_STRTAG); | |
1167 | PUT_SDB_TYPE (T_STRUCT); | |
1168 | member_scl = C_MOS; | |
1169 | break; | |
1170 | ||
1171 | case ENUMERAL_TYPE: | |
1172 | PUT_SDB_SCL (C_ENTAG); | |
1173 | PUT_SDB_TYPE (T_ENUM); | |
1174 | member_scl = C_MOE; | |
1175 | break; | |
1d300e19 KG |
1176 | |
1177 | default: | |
1178 | break; | |
37ba3390 RS |
1179 | } |
1180 | ||
1181 | PUT_SDB_SIZE (size); | |
1182 | PUT_SDB_ENDEF; | |
1183 | ||
5b7f1820 RS |
1184 | /* Print out the base class information with fields |
1185 | named after the types they hold. */ | |
684d9f3b | 1186 | /* This is only relevant to aggregate types. TYPE_BINFO is used |
46fb0d7d JW |
1187 | for other purposes in an ENUMERAL_TYPE, so we must exclude that |
1188 | case. */ | |
1189 | if (TREE_CODE (type) != ENUMERAL_TYPE) | |
5b7f1820 | 1190 | { |
46fb0d7d JW |
1191 | if (TYPE_BINFO (type) |
1192 | && TYPE_BINFO_BASETYPES (type)) | |
1193 | n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type)); | |
1194 | for (i = 0; i < n_baseclasses; i++) | |
ee3e2d3d | 1195 | { |
46fb0d7d JW |
1196 | tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)), |
1197 | i); | |
1198 | tree child_type = BINFO_TYPE (child); | |
1199 | tree child_type_name; | |
1200 | if (TYPE_NAME (child_type) == 0) | |
1201 | continue; | |
1202 | if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE) | |
1203 | child_type_name = TYPE_NAME (child_type); | |
1204 | else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL) | |
1205 | { | |
1206 | child_type_name = DECL_NAME (TYPE_NAME (child_type)); | |
1207 | if (child_type_name && template_name_p (child_type_name)) | |
1208 | child_type_name | |
1209 | = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type)); | |
1210 | } | |
1211 | else | |
1212 | continue; | |
1213 | ||
1214 | CONTIN; | |
1215 | PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name)); | |
665f2503 | 1216 | PUT_SDB_INT_VAL (tree_low_cst (BINFO_OFFSET (child), 0)); |
46fb0d7d JW |
1217 | PUT_SDB_SCL (member_scl); |
1218 | sdbout_type (BINFO_TYPE (child)); | |
1219 | PUT_SDB_ENDEF; | |
ee3e2d3d | 1220 | } |
5b7f1820 RS |
1221 | } |
1222 | ||
37ba3390 RS |
1223 | /* output the individual fields */ |
1224 | ||
1225 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
bf5e8d0c AJ |
1226 | { |
1227 | for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) | |
1228 | if (host_integerp (TREE_VALUE (tem), 0)) | |
1229 | { | |
1230 | PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem))); | |
1231 | PUT_SDB_INT_VAL (tree_low_cst (TREE_VALUE (tem), 0)); | |
1232 | PUT_SDB_SCL (C_MOE); | |
1233 | PUT_SDB_TYPE (T_MOE); | |
1234 | PUT_SDB_ENDEF; | |
1235 | } | |
1236 | } | |
37ba3390 RS |
1237 | else /* record or union type */ |
1238 | for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) | |
1239 | /* Output the name, type, position (in bits), size (in bits) | |
1240 | of each field. */ | |
1241 | ||
1242 | /* Omit here the nameless fields that are used to skip bits. | |
1243 | Also omit fields with variable size or position. | |
1244 | Also omit non FIELD_DECL nodes that GNU C++ may put here. */ | |
1245 | if (TREE_CODE (tem) == FIELD_DECL | |
1270a9b3 LB |
1246 | && DECL_NAME (tem) |
1247 | && DECL_SIZE (tem) | |
665f2503 RK |
1248 | && host_integerp (DECL_SIZE (tem), 1) |
1249 | && host_integerp (bit_position (tem), 0)) | |
37ba3390 | 1250 | { |
ebb13e7e | 1251 | const char *name; |
0eb111c2 | 1252 | |
37ba3390 | 1253 | CONTIN; |
4eadbbd5 | 1254 | name = IDENTIFIER_POINTER (DECL_NAME (tem)); |
0eb111c2 | 1255 | PUT_SDB_DEF (name); |
37ba3390 RS |
1256 | if (DECL_BIT_FIELD_TYPE (tem)) |
1257 | { | |
665f2503 | 1258 | PUT_SDB_INT_VAL (int_bit_position (tem)); |
37ba3390 RS |
1259 | PUT_SDB_SCL (C_FIELD); |
1260 | sdbout_type (DECL_BIT_FIELD_TYPE (tem)); | |
665f2503 | 1261 | PUT_SDB_SIZE (tree_low_cst (DECL_SIZE (tem), 1)); |
37ba3390 RS |
1262 | } |
1263 | else | |
1264 | { | |
665f2503 | 1265 | PUT_SDB_INT_VAL (int_bit_position (tem) / BITS_PER_UNIT); |
37ba3390 RS |
1266 | PUT_SDB_SCL (member_scl); |
1267 | sdbout_type (TREE_TYPE (tem)); | |
1268 | } | |
1269 | PUT_SDB_ENDEF; | |
1270 | } | |
1271 | /* output end of a structure,union, or enumeral definition */ | |
1272 | ||
1273 | PUT_SDB_PLAIN_DEF ("eos"); | |
1274 | PUT_SDB_INT_VAL (size); | |
1275 | PUT_SDB_SCL (C_EOS); | |
1276 | PUT_SDB_TAG (KNOWN_TYPE_TAG (type)); | |
1277 | PUT_SDB_SIZE (size); | |
1278 | PUT_SDB_ENDEF; | |
1279 | break; | |
1d300e19 KG |
1280 | |
1281 | default: | |
1282 | break; | |
37ba3390 RS |
1283 | } |
1284 | } | |
1285 | } | |
1286 | \f | |
1287 | /* The following two functions output definitions of function parameters. | |
1288 | Each parameter gets a definition locating it in the parameter list. | |
1289 | Each parameter that is a register variable gets a second definition | |
1290 | locating it in the register. | |
1291 | ||
1292 | Printing or argument lists in gdb uses the definitions that | |
1293 | locate in the parameter list. But reference to the variable in | |
1294 | expressions uses preferentially the definition as a register. */ | |
1295 | ||
1296 | /* Output definitions, referring to storage in the parmlist, | |
1297 | of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ | |
1298 | ||
1299 | static void | |
1300 | sdbout_parms (parms) | |
1301 | tree parms; | |
1302 | { | |
1303 | for (; parms; parms = TREE_CHAIN (parms)) | |
1304 | if (DECL_NAME (parms)) | |
1305 | { | |
1306 | int current_sym_value = 0; | |
ebb13e7e | 1307 | const char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); |
37ba3390 RS |
1308 | |
1309 | if (name == 0 || *name == 0) | |
1310 | name = gen_fake_label (); | |
1311 | ||
1312 | /* Perform any necessary register eliminations on the parameter's rtl, | |
1313 | so that the debugging output will be accurate. */ | |
db3cf6fb | 1314 | DECL_INCOMING_RTL (parms) |
1914f5da | 1315 | = eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX); |
d975d8c3 MM |
1316 | SET_DECL_RTL (parms, |
1317 | eliminate_regs (DECL_RTL (parms), 0, NULL_RTX)); | |
37ba3390 RS |
1318 | |
1319 | if (PARM_PASSED_IN_MEMORY (parms)) | |
1320 | { | |
1321 | rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0); | |
1322 | tree type; | |
1323 | ||
1324 | /* ??? Here we assume that the parm address is indexed | |
1325 | off the frame pointer or arg pointer. | |
1326 | If that is not true, we produce meaningless results, | |
1327 | but do not crash. */ | |
1328 | if (GET_CODE (addr) == PLUS | |
1329 | && GET_CODE (XEXP (addr, 1)) == CONST_INT) | |
1330 | current_sym_value = INTVAL (XEXP (addr, 1)); | |
1331 | else | |
1332 | current_sym_value = 0; | |
1333 | ||
1334 | if (GET_CODE (DECL_RTL (parms)) == REG | |
37ba3390 RS |
1335 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
1336 | type = DECL_ARG_TYPE (parms); | |
1337 | else | |
1338 | { | |
1339 | int original_sym_value = current_sym_value; | |
1340 | ||
1341 | /* This is the case where the parm is passed as an int or | |
1342 | double and it is converted to a char, short or float | |
1343 | and stored back in the parmlist. In this case, describe | |
1344 | the parm with the variable's declared type, and adjust | |
1345 | the address if the least significant bytes (which we are | |
1346 | using) are not the first ones. */ | |
f76b9db2 ILT |
1347 | if (BYTES_BIG_ENDIAN |
1348 | && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
37ba3390 RS |
1349 | current_sym_value += |
1350 | (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
1351 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
f76b9db2 | 1352 | |
37ba3390 RS |
1353 | if (GET_CODE (DECL_RTL (parms)) == MEM |
1354 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
1355 | && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
1356 | == CONST_INT) | |
1357 | && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
1358 | == current_sym_value)) | |
1359 | type = TREE_TYPE (parms); | |
1360 | else | |
1361 | { | |
1362 | current_sym_value = original_sym_value; | |
1363 | type = DECL_ARG_TYPE (parms); | |
1364 | } | |
1365 | } | |
1366 | ||
1367 | PUT_SDB_DEF (name); | |
1368 | PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr)); | |
1369 | PUT_SDB_SCL (C_ARG); | |
1370 | PUT_SDB_TYPE (plain_type (type)); | |
1371 | PUT_SDB_ENDEF; | |
1372 | } | |
1373 | else if (GET_CODE (DECL_RTL (parms)) == REG) | |
1374 | { | |
1375 | rtx best_rtl; | |
1376 | /* Parm passed in registers and lives in registers or nowhere. */ | |
1377 | ||
1378 | /* If parm lives in a register, use that register; | |
1379 | pretend the parm was passed there. It would be more consistent | |
1380 | to describe the register where the parm was passed, | |
1381 | but in practice that register usually holds something else. */ | |
770ae6cc | 1382 | if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
37ba3390 RS |
1383 | best_rtl = DECL_RTL (parms); |
1384 | /* If the parm lives nowhere, | |
1385 | use the register where it was passed. */ | |
1386 | else | |
1387 | best_rtl = DECL_INCOMING_RTL (parms); | |
1388 | ||
1389 | PUT_SDB_DEF (name); | |
1390 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl))); | |
1391 | PUT_SDB_SCL (C_REGPARM); | |
21abd7a6 | 1392 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
37ba3390 RS |
1393 | PUT_SDB_ENDEF; |
1394 | } | |
1395 | else if (GET_CODE (DECL_RTL (parms)) == MEM | |
1396 | && XEXP (DECL_RTL (parms), 0) != const0_rtx) | |
1397 | { | |
1398 | /* Parm was passed in registers but lives on the stack. */ | |
1399 | ||
1400 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), | |
1401 | in which case we want the value of that CONST_INT, | |
1402 | or (MEM (REG ...)) or (MEM (MEM ...)), | |
1403 | in which case we use a value of zero. */ | |
1404 | if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG | |
1405 | || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM) | |
1406 | current_sym_value = 0; | |
1407 | else | |
1408 | current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); | |
1409 | ||
1410 | /* Again, this assumes the offset is based on the arg pointer. */ | |
1411 | PUT_SDB_DEF (name); | |
1412 | PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, | |
1413 | XEXP (DECL_RTL (parms), 0))); | |
1414 | PUT_SDB_SCL (C_ARG); | |
21abd7a6 | 1415 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
37ba3390 RS |
1416 | PUT_SDB_ENDEF; |
1417 | } | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | /* Output definitions for the places where parms live during the function, | |
1422 | when different from where they were passed, when the parms were passed | |
1423 | in memory. | |
1424 | ||
1425 | It is not useful to do this for parms passed in registers | |
1426 | that live during the function in different registers, because it is | |
1427 | impossible to look in the passed register for the passed value, | |
1428 | so we use the within-the-function register to begin with. | |
1429 | ||
1430 | PARMS is a chain of PARM_DECL nodes. */ | |
1431 | ||
1432 | static void | |
1433 | sdbout_reg_parms (parms) | |
1434 | tree parms; | |
1435 | { | |
1436 | for (; parms; parms = TREE_CHAIN (parms)) | |
1437 | if (DECL_NAME (parms)) | |
1438 | { | |
ebb13e7e | 1439 | const char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); |
37ba3390 RS |
1440 | |
1441 | /* Report parms that live in registers during the function | |
1442 | but were passed in memory. */ | |
1443 | if (GET_CODE (DECL_RTL (parms)) == REG | |
37ba3390 RS |
1444 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER |
1445 | && PARM_PASSED_IN_MEMORY (parms)) | |
1446 | { | |
1447 | if (name == 0 || *name == 0) | |
1448 | name = gen_fake_label (); | |
1449 | PUT_SDB_DEF (name); | |
1450 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms)))); | |
1451 | PUT_SDB_SCL (C_REG); | |
21abd7a6 | 1452 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
37ba3390 RS |
1453 | PUT_SDB_ENDEF; |
1454 | } | |
1455 | /* Report parms that live in memory but not where they were passed. */ | |
1456 | else if (GET_CODE (DECL_RTL (parms)) == MEM | |
1457 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
1458 | && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT | |
1459 | && PARM_PASSED_IN_MEMORY (parms) | |
1460 | && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) | |
1461 | { | |
1462 | #if 0 /* ??? It is not clear yet what should replace this. */ | |
1463 | int offset = DECL_OFFSET (parms) / BITS_PER_UNIT; | |
1464 | /* A parm declared char is really passed as an int, | |
1465 | so it occupies the least significant bytes. | |
1466 | On a big-endian machine those are not the low-numbered ones. */ | |
f76b9db2 ILT |
1467 | if (BYTES_BIG_ENDIAN |
1468 | && offset != -1 | |
1469 | && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
37ba3390 RS |
1470 | offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) |
1471 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
37ba3390 RS |
1472 | if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...} |
1473 | #endif | |
1474 | { | |
1475 | if (name == 0 || *name == 0) | |
1476 | name = gen_fake_label (); | |
1477 | PUT_SDB_DEF (name); | |
1478 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
1479 | (XEXP (DECL_RTL (parms), 0))); | |
1480 | PUT_SDB_SCL (C_AUTO); | |
1481 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
1482 | PUT_SDB_ENDEF; | |
1483 | } | |
1484 | } | |
1485 | } | |
1486 | } | |
1487 | \f | |
2b85879e NB |
1488 | /* Output debug information for a global DECL. Called from toplev.c |
1489 | after compilation proper has finished. */ | |
1490 | ||
1491 | static void | |
1492 | sdbout_global_decl (decl) | |
1493 | tree decl; | |
1494 | { | |
1495 | if (TREE_CODE (decl) == VAR_DECL | |
3914abb4 NB |
1496 | && !DECL_EXTERNAL (decl) |
1497 | && DECL_RTL_SET_P (decl)) | |
2b85879e NB |
1498 | { |
1499 | /* The COFF linker can move initialized global vars to the end. | |
3914abb4 NB |
1500 | And that can screw up the symbol ordering. Defer those for |
1501 | sdbout_finish (). */ | |
1502 | if (!DECL_INITIAL (decl) || !TREE_PUBLIC (decl)) | |
2b85879e NB |
1503 | sdbout_symbol (decl, 0); |
1504 | ||
1505 | /* Output COFF information for non-global file-scope initialized | |
1506 | variables. */ | |
3914abb4 | 1507 | if (DECL_INITIAL (decl) && GET_CODE (DECL_RTL (decl)) == MEM) |
2b85879e NB |
1508 | sdbout_toplevel_data (decl); |
1509 | } | |
1510 | } | |
3914abb4 NB |
1511 | |
1512 | /* Output initialized global vars at the end, in the order of | |
1513 | definition. See comment in sdbout_global_decl. */ | |
1514 | ||
1515 | static void | |
1516 | sdbout_finish (main_filename) | |
1517 | const char *main_filename ATTRIBUTE_UNUSED; | |
1518 | { | |
1519 | tree decl = getdecls (); | |
1520 | unsigned int len = list_length (decl); | |
1521 | tree *vec = (tree *) xmalloc (sizeof (tree) * len); | |
1522 | unsigned int i; | |
1523 | ||
1524 | /* Process the decls in reverse order--earliest first. Put them | |
1525 | into VEC from back to front, then take out from front. */ | |
1526 | ||
1527 | for (i = 0; i < len; i++, decl = TREE_CHAIN (decl)) | |
1528 | vec[len - i - 1] = decl; | |
1529 | ||
1530 | for (i = 0; i < len; i++) | |
1531 | { | |
1532 | decl = vec[i]; | |
1533 | if (TREE_CODE (decl) == VAR_DECL | |
1534 | && ! DECL_EXTERNAL (decl) | |
1535 | && DECL_INITIAL (decl) | |
1536 | && TREE_PUBLIC (decl) | |
1537 | && DECL_RTL_SET_P (decl)) | |
1538 | sdbout_symbol (decl, 0); | |
1539 | } | |
1540 | ||
1541 | free (vec); | |
1542 | } | |
2b85879e | 1543 | \f |
37ba3390 RS |
1544 | /* Describe the beginning of an internal block within a function. |
1545 | Also output descriptions of variables defined in this block. | |
1546 | ||
1547 | N is the number of the block, by order of beginning, counting from 1, | |
1548 | and not counting the outermost (function top-level) block. | |
1549 | The blocks match the BLOCKs in DECL_INITIAL (current_function_decl), | |
1550 | if the count starts at 0 for the outermost one. */ | |
1551 | ||
a5a42b92 | 1552 | static void |
e2a12aca | 1553 | sdbout_begin_block (line, n) |
a5a42b92 NB |
1554 | unsigned int line; |
1555 | unsigned int n; | |
37ba3390 RS |
1556 | { |
1557 | tree decl = current_function_decl; | |
1558 | MAKE_LINE_SAFE (line); | |
9f27ca8b JW |
1559 | |
1560 | /* The SCO compiler does not emit a separate block for the function level | |
1561 | scope, so we avoid it here also. However, mips ECOFF compilers do emit | |
1562 | a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */ | |
1563 | #ifndef MIPS_DEBUGGING_INFO | |
1564 | if (n != 1) | |
1565 | #endif | |
1566 | PUT_SDB_BLOCK_START (line - sdb_begin_function_line); | |
1567 | ||
37ba3390 RS |
1568 | if (n == 1) |
1569 | { | |
1570 | /* Include the outermost BLOCK's variables in block 1. */ | |
18c038b9 | 1571 | do_block = BLOCK_NUMBER (DECL_INITIAL (decl)); |
37ba3390 RS |
1572 | sdbout_block (DECL_INITIAL (decl)); |
1573 | } | |
1574 | /* If -g1, suppress all the internal symbols of functions | |
1575 | except for arguments. */ | |
1576 | if (debug_info_level != DINFO_LEVEL_TERSE) | |
1577 | { | |
37ba3390 RS |
1578 | do_block = n; |
1579 | sdbout_block (DECL_INITIAL (decl)); | |
1580 | } | |
1581 | ||
1582 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1583 | sdbout_dequeue_anonymous_types (); | |
1584 | #endif | |
1585 | } | |
1586 | ||
1587 | /* Describe the end line-number of an internal block within a function. */ | |
1588 | ||
e2a12aca NB |
1589 | static void |
1590 | sdbout_end_block (line, n) | |
a5a42b92 NB |
1591 | unsigned int line; |
1592 | unsigned int n ATTRIBUTE_UNUSED; | |
37ba3390 RS |
1593 | { |
1594 | MAKE_LINE_SAFE (line); | |
9f27ca8b JW |
1595 | |
1596 | /* The SCO compiler does not emit a separate block for the function level | |
1597 | scope, so we avoid it here also. However, mips ECOFF compilers do emit | |
1598 | a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */ | |
1599 | #ifndef MIPS_DEBUGGING_INFO | |
1600 | if (n != 1) | |
1601 | #endif | |
37ba3390 RS |
1602 | PUT_SDB_BLOCK_END (line - sdb_begin_function_line); |
1603 | } | |
1604 | ||
e2a12aca | 1605 | static void |
653e276c NB |
1606 | sdbout_source_line (line, filename) |
1607 | unsigned int line; | |
e2a12aca | 1608 | const char *filename ATTRIBUTE_UNUSED; |
e2a12aca | 1609 | { |
e2a12aca | 1610 | /* COFF relative line numbers must be positive. */ |
5197bd50 | 1611 | if ((int) line > sdb_begin_function_line) |
e2a12aca NB |
1612 | { |
1613 | #ifdef ASM_OUTPUT_SOURCE_LINE | |
1614 | ASM_OUTPUT_SOURCE_LINE (asm_out_file, line); | |
1615 | #else | |
1616 | fprintf (asm_out_file, "\t.ln\t%d\n", | |
1617 | ((sdb_begin_function_line > -1) | |
1618 | ? line - sdb_begin_function_line : 1)); | |
1619 | #endif | |
1620 | } | |
1621 | } | |
1622 | ||
37ba3390 RS |
1623 | /* Output sdb info for the current function name. |
1624 | Called from assemble_start_function. */ | |
1625 | ||
653e276c NB |
1626 | static void |
1627 | sdbout_begin_function (decl) | |
1628 | tree decl ATTRIBUTE_UNUSED; | |
37ba3390 RS |
1629 | { |
1630 | sdbout_symbol (current_function_decl, 0); | |
1631 | } | |
1632 | ||
653e276c NB |
1633 | /* Called at beginning of function body (before or after prologue, |
1634 | depending on MIPS_DEBUGGING_INFO). Record the function's starting | |
1635 | line number, so we can output relative line numbers for the other | |
1636 | lines. Describe beginning of outermost block. Also describe the | |
1637 | parameter list. */ | |
37ba3390 | 1638 | |
653e276c NB |
1639 | #ifndef MIPS_DEBUGGING_INFO |
1640 | static void | |
1641 | sdbout_begin_prologue (line, file) | |
1642 | unsigned int line; | |
1643 | const char *file ATTRIBUTE_UNUSED; | |
1644 | { | |
1645 | sdbout_end_prologue (line); | |
1646 | } | |
1647 | #endif | |
1648 | ||
1649 | static void | |
1650 | sdbout_end_prologue (line) | |
1651 | unsigned int line; | |
37ba3390 RS |
1652 | { |
1653 | sdb_begin_function_line = line - 1; | |
1654 | PUT_SDB_FUNCTION_START (line); | |
1655 | sdbout_parms (DECL_ARGUMENTS (current_function_decl)); | |
1656 | sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl)); | |
1657 | } | |
1658 | ||
1659 | /* Called at end of function (before epilogue). | |
1660 | Describe end of outermost block. */ | |
1661 | ||
e2a12aca | 1662 | static void |
37ba3390 | 1663 | sdbout_end_function (line) |
e2a12aca | 1664 | unsigned int line; |
37ba3390 RS |
1665 | { |
1666 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1667 | sdbout_dequeue_anonymous_types (); | |
1668 | #endif | |
1669 | ||
1670 | MAKE_LINE_SAFE (line); | |
1671 | PUT_SDB_FUNCTION_END (line - sdb_begin_function_line); | |
1672 | ||
1673 | /* Indicate we are between functions, for line-number output. */ | |
1674 | sdb_begin_function_line = -1; | |
1675 | } | |
1676 | ||
1677 | /* Output sdb info for the absolute end of a function. | |
1678 | Called after the epilogue is output. */ | |
1679 | ||
e2a12aca | 1680 | static void |
37ba3390 RS |
1681 | sdbout_end_epilogue () |
1682 | { | |
e59f7d3d | 1683 | const char *const name ATTRIBUTE_UNUSED |
e2a12aca NB |
1684 | = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)); |
1685 | ||
1686 | #ifdef PUT_SDB_EPILOGUE_END | |
1687 | PUT_SDB_EPILOGUE_END (name); | |
1688 | #else | |
1689 | fprintf (asm_out_file, "\t.def\t"); | |
1690 | assemble_name (asm_out_file, name); | |
1691 | fprintf (asm_out_file, "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", | |
1692 | SDB_DELIM, SDB_DELIM, SDB_DELIM); | |
1693 | #endif | |
37ba3390 RS |
1694 | } |
1695 | ||
1696 | /* Output sdb info for the given label. Called only if LABEL_NAME (insn) | |
1697 | is present. */ | |
1698 | ||
e1772ac0 | 1699 | static void |
37ba3390 | 1700 | sdbout_label (insn) |
b3694847 | 1701 | rtx insn; |
37ba3390 RS |
1702 | { |
1703 | PUT_SDB_DEF (LABEL_NAME (insn)); | |
1704 | PUT_SDB_VAL (insn); | |
1705 | PUT_SDB_SCL (C_LABEL); | |
1706 | PUT_SDB_TYPE (T_NULL); | |
1707 | PUT_SDB_ENDEF; | |
1708 | } | |
1709 | ||
cc694a81 DE |
1710 | /* Change to reading from a new source file. */ |
1711 | ||
7f905405 NB |
1712 | static void |
1713 | sdbout_start_source_file (line, filename) | |
1714 | unsigned int line ATTRIBUTE_UNUSED; | |
df07dc5b | 1715 | const char *filename ATTRIBUTE_UNUSED; |
cc694a81 DE |
1716 | { |
1717 | #ifdef MIPS_DEBUGGING_INFO | |
1718 | struct sdb_file *n = (struct sdb_file *) xmalloc (sizeof *n); | |
1719 | ||
1720 | n->next = current_file; | |
1721 | n->name = filename; | |
1722 | current_file = n; | |
1723 | PUT_SDB_SRC_FILE (filename); | |
1724 | #endif | |
1725 | } | |
1726 | ||
1727 | /* Revert to reading a previous source file. */ | |
1728 | ||
7f905405 NB |
1729 | static void |
1730 | sdbout_end_source_file (line) | |
1731 | unsigned int line ATTRIBUTE_UNUSED; | |
cc694a81 DE |
1732 | { |
1733 | #ifdef MIPS_DEBUGGING_INFO | |
1734 | struct sdb_file *next; | |
1735 | ||
1736 | next = current_file->next; | |
1737 | free (current_file); | |
1738 | current_file = next; | |
1739 | PUT_SDB_SRC_FILE (current_file->name); | |
1740 | #endif | |
1741 | } | |
1742 | ||
4eadbbd5 RK |
1743 | /* Set up for SDB output at the start of compilation. */ |
1744 | ||
a51d908e | 1745 | static void |
e2a12aca | 1746 | sdbout_init (input_file_name) |
4eadbbd5 | 1747 | const char *input_file_name ATTRIBUTE_UNUSED; |
4eadbbd5 RK |
1748 | { |
1749 | #ifdef MIPS_DEBUGGING_INFO | |
1750 | current_file = (struct sdb_file *) xmalloc (sizeof *current_file); | |
1751 | current_file->next = NULL; | |
1752 | current_file->name = input_file_name; | |
1753 | #endif | |
1754 | ||
1755 | #ifdef RMS_QUICK_HACK_1 | |
1756 | tree t; | |
a51d908e | 1757 | for (t = getdecls (); t; t = TREE_CHAIN (t)) |
4eadbbd5 RK |
1758 | if (DECL_NAME (t) && IDENTIFIER_POINTER (DECL_NAME (t)) != 0 |
1759 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (t)), "__vtbl_ptr_type")) | |
1760 | sdbout_symbol (t, 0); | |
1761 | #endif | |
1762 | ||
1763 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1764 | ggc_add_tree_root (&anonymous_types, 1); | |
1765 | #endif | |
1766 | } | |
1767 | ||
37ba3390 | 1768 | #endif /* SDB_DEBUGGING_INFO */ |