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37ba3390 | 1 | /* Output sdb-format symbol table information from GNU compiler. |
c913b6f1 KG |
2 | Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
3 | 2000, 2001 Free Software Foundation, Inc. | |
37ba3390 RS |
4 | |
5 | This file is part of GNU CC. | |
6 | ||
7 | GNU CC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU CC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU CC; see the file COPYING. If not, write to | |
e9fa0c7c RK |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
20 | Boston, MA 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 *)); |
7f905405 NB |
96 | static void sdbout_start_source_file PARAMS ((unsigned, const char *)); |
97 | static void sdbout_end_source_file PARAMS ((unsigned)); | |
e2a12aca NB |
98 | static void sdbout_begin_block PARAMS ((unsigned, unsigned)); |
99 | static void sdbout_end_block PARAMS ((unsigned, unsigned)); | |
653e276c | 100 | static void sdbout_source_line PARAMS ((unsigned int, const char *)); |
e2a12aca | 101 | static void sdbout_end_epilogue PARAMS ((void)); |
653e276c NB |
102 | #ifndef MIPS_DEBUGGING_INFO |
103 | static void sdbout_begin_prologue PARAMS ((unsigned int, const char *)); | |
104 | #endif | |
105 | static void sdbout_end_prologue PARAMS ((unsigned int)); | |
106 | static void sdbout_begin_function PARAMS ((tree)); | |
e2a12aca | 107 | static void sdbout_end_function PARAMS ((unsigned int)); |
cdadb1dd KG |
108 | static char *gen_fake_label PARAMS ((void)); |
109 | static int plain_type PARAMS ((tree)); | |
110 | static int template_name_p PARAMS ((tree)); | |
111 | static void sdbout_record_type_name PARAMS ((tree)); | |
112 | static int plain_type_1 PARAMS ((tree, int)); | |
113 | static void sdbout_block PARAMS ((tree)); | |
114 | static void sdbout_syms PARAMS ((tree)); | |
7bdb32b9 | 115 | #ifdef SDB_ALLOW_FORWARD_REFERENCES |
cdadb1dd KG |
116 | static void sdbout_queue_anonymous_type PARAMS ((tree)); |
117 | static void sdbout_dequeue_anonymous_types PARAMS ((void)); | |
7bdb32b9 | 118 | #endif |
cdadb1dd KG |
119 | static void sdbout_type PARAMS ((tree)); |
120 | static void sdbout_field_types PARAMS ((tree)); | |
121 | static void sdbout_one_type PARAMS ((tree)); | |
122 | static void sdbout_parms PARAMS ((tree)); | |
123 | static void sdbout_reg_parms PARAMS ((tree)); | |
37ba3390 | 124 | \f |
37ba3390 RS |
125 | /* Random macros describing parts of SDB data. */ |
126 | ||
127 | /* Put something here if lines get too long */ | |
128 | #define CONTIN | |
129 | ||
130 | /* Default value of delimiter is ";". */ | |
131 | #ifndef SDB_DELIM | |
132 | #define SDB_DELIM ";" | |
133 | #endif | |
134 | ||
135 | /* Maximum number of dimensions the assembler will allow. */ | |
136 | #ifndef SDB_MAX_DIM | |
137 | #define SDB_MAX_DIM 4 | |
138 | #endif | |
139 | ||
140 | #ifndef PUT_SDB_SCL | |
141 | #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM) | |
142 | #endif | |
143 | ||
144 | #ifndef PUT_SDB_INT_VAL | |
e016950d KG |
145 | #define PUT_SDB_INT_VAL(a) \ |
146 | do { \ | |
147 | fputs ("\t.val\t", asm_out_file); \ | |
148 | fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)(a)); \ | |
149 | fprintf (asm_out_file, "%s", SDB_DELIM); \ | |
150 | } while (0) | |
151 | ||
37ba3390 RS |
152 | #endif |
153 | ||
154 | #ifndef PUT_SDB_VAL | |
155 | #define PUT_SDB_VAL(a) \ | |
156 | ( fputs ("\t.val\t", asm_out_file), \ | |
157 | output_addr_const (asm_out_file, (a)), \ | |
158 | fprintf (asm_out_file, SDB_DELIM)) | |
159 | #endif | |
160 | ||
161 | #ifndef PUT_SDB_DEF | |
162 | #define PUT_SDB_DEF(a) \ | |
163 | do { fprintf (asm_out_file, "\t.def\t"); \ | |
800a6a0c | 164 | assemble_name (asm_out_file, a); \ |
37ba3390 RS |
165 | fprintf (asm_out_file, SDB_DELIM); } while (0) |
166 | #endif | |
167 | ||
168 | #ifndef PUT_SDB_PLAIN_DEF | |
169 | #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM) | |
170 | #endif | |
171 | ||
172 | #ifndef PUT_SDB_ENDEF | |
173 | #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file) | |
174 | #endif | |
175 | ||
176 | #ifndef PUT_SDB_TYPE | |
177 | #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM) | |
178 | #endif | |
179 | ||
180 | #ifndef PUT_SDB_SIZE | |
e016950d KG |
181 | #define PUT_SDB_SIZE(a) \ |
182 | do { \ | |
183 | fputs ("\t.size\t", asm_out_file); \ | |
184 | fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)(a)); \ | |
185 | fprintf (asm_out_file, "%s", SDB_DELIM); \ | |
186 | } while(0) | |
37ba3390 RS |
187 | #endif |
188 | ||
189 | #ifndef PUT_SDB_START_DIM | |
190 | #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t") | |
191 | #endif | |
192 | ||
193 | #ifndef PUT_SDB_NEXT_DIM | |
194 | #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a) | |
195 | #endif | |
196 | ||
197 | #ifndef PUT_SDB_LAST_DIM | |
198 | #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM) | |
199 | #endif | |
200 | ||
201 | #ifndef PUT_SDB_TAG | |
202 | #define PUT_SDB_TAG(a) \ | |
203 | do { fprintf (asm_out_file, "\t.tag\t"); \ | |
800a6a0c | 204 | assemble_name (asm_out_file, a); \ |
37ba3390 RS |
205 | fprintf (asm_out_file, SDB_DELIM); } while (0) |
206 | #endif | |
207 | ||
208 | #ifndef PUT_SDB_BLOCK_START | |
209 | #define PUT_SDB_BLOCK_START(LINE) \ | |
210 | fprintf (asm_out_file, \ | |
211 | "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \ | |
212 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
213 | #endif | |
214 | ||
215 | #ifndef PUT_SDB_BLOCK_END | |
216 | #define PUT_SDB_BLOCK_END(LINE) \ | |
217 | fprintf (asm_out_file, \ | |
218 | "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \ | |
219 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
220 | #endif | |
221 | ||
222 | #ifndef PUT_SDB_FUNCTION_START | |
223 | #define PUT_SDB_FUNCTION_START(LINE) \ | |
224 | fprintf (asm_out_file, \ | |
225 | "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \ | |
226 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
227 | #endif | |
228 | ||
229 | #ifndef PUT_SDB_FUNCTION_END | |
230 | #define PUT_SDB_FUNCTION_END(LINE) \ | |
231 | fprintf (asm_out_file, \ | |
232 | "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \ | |
233 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
234 | #endif | |
235 | ||
37ba3390 RS |
236 | #ifndef SDB_GENERATE_FAKE |
237 | #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \ | |
238 | sprintf ((BUFFER), ".%dfake", (NUMBER)); | |
239 | #endif | |
240 | ||
241 | /* Return the sdb tag identifier string for TYPE | |
242 | if TYPE has already been defined; otherwise return a null pointer. */ | |
243 | ||
6fb2e346 | 244 | #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type) |
37ba3390 RS |
245 | |
246 | /* Set the sdb tag identifier string for TYPE to NAME. */ | |
247 | ||
248 | #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \ | |
6fb2e346 | 249 | TYPE_SYMTAB_POINTER (TYPE) = (NAME) |
37ba3390 RS |
250 | |
251 | /* Return the name (a string) of the struct, union or enum tag | |
252 | described by the TREE_LIST node LINK. This is 0 for an anonymous one. */ | |
253 | ||
254 | #define TAG_NAME(link) \ | |
255 | (((link) && TREE_PURPOSE ((link)) \ | |
256 | && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \ | |
257 | ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0) | |
258 | ||
259 | /* Ensure we don't output a negative line number. */ | |
260 | #define MAKE_LINE_SAFE(line) \ | |
261 | if (line <= sdb_begin_function_line) line = sdb_begin_function_line + 1 | |
cc694a81 DE |
262 | |
263 | /* Perform linker optimization of merging header file definitions together | |
264 | for targets with MIPS_DEBUGGING_INFO defined. This won't work without a | |
265 | post 960826 version of GAS. Nothing breaks with earlier versions of GAS, | |
266 | the optimization just won't be done. The native assembler already has the | |
267 | necessary support. */ | |
268 | ||
269 | #ifdef MIPS_DEBUGGING_INFO | |
270 | ||
271 | #ifndef PUT_SDB_SRC_FILE | |
272 | #define PUT_SDB_SRC_FILE(FILENAME) \ | |
273 | output_file_directive (asm_out_file, (FILENAME)) | |
274 | #endif | |
275 | ||
276 | /* ECOFF linkers have an optimization that does the same kind of thing as | |
277 | N_BINCL/E_INCL in stabs: eliminate duplicate debug information in the | |
278 | executable. To achieve this, GCC must output a .file for each file | |
279 | name change. */ | |
280 | ||
281 | /* This is a stack of input files. */ | |
282 | ||
283 | struct sdb_file | |
284 | { | |
285 | struct sdb_file *next; | |
df07dc5b | 286 | const char *name; |
cc694a81 DE |
287 | }; |
288 | ||
289 | /* This is the top of the stack. */ | |
290 | ||
291 | static struct sdb_file *current_file; | |
292 | ||
293 | #endif /* MIPS_DEBUGGING_INFO */ | |
37ba3390 | 294 | \f |
7f905405 | 295 | /* The debug hooks structure. */ |
a51d908e NB |
296 | struct gcc_debug_hooks sdb_debug_hooks = |
297 | { | |
298 | sdbout_init, | |
e2a12aca | 299 | debug_nothing_charstar, |
7f905405 NB |
300 | debug_nothing_int_charstar, |
301 | debug_nothing_int_charstar, | |
302 | sdbout_start_source_file, | |
a5a42b92 NB |
303 | sdbout_end_source_file, |
304 | sdbout_begin_block, | |
e2a12aca NB |
305 | sdbout_end_block, |
306 | sdbout_source_line, | |
653e276c NB |
307 | #ifdef MIPS_DEBUGGING_INFO |
308 | /* Defer on MIPS systems so that parameter descriptions follow | |
309 | function entry. */ | |
310 | debug_nothing_int_charstar, /* begin_prologue */ | |
311 | sdbout_end_prologue, /* end_prologue */ | |
312 | #else | |
313 | sdbout_begin_prologue, /* begin_prologue */ | |
314 | debug_nothing_int, /* end_prologue */ | |
315 | #endif | |
e2a12aca | 316 | sdbout_end_epilogue, |
653e276c | 317 | sdbout_begin_function, |
e2a12aca | 318 | sdbout_end_function |
a51d908e NB |
319 | }; |
320 | \f | |
37ba3390 RS |
321 | #if 0 |
322 | ||
323 | /* return the tag identifier for type | |
324 | */ | |
325 | ||
326 | char * | |
327 | tag_of_ru_type (type,link) | |
328 | tree type,link; | |
329 | { | |
330 | if (TYPE_SYMTAB_ADDRESS (type)) | |
6fb2e346 | 331 | return TYPE_SYMTAB_ADDRESS (type); |
37ba3390 RS |
332 | if (link && TREE_PURPOSE (link) |
333 | && IDENTIFIER_POINTER (TREE_PURPOSE (link))) | |
6fb2e346 | 334 | TYPE_SYMTAB_ADDRESS (type) = IDENTIFIER_POINTER (TREE_PURPOSE (link)); |
37ba3390 RS |
335 | else |
336 | return (char *) TYPE_SYMTAB_ADDRESS (type); | |
337 | } | |
338 | #endif | |
339 | ||
340 | /* Return a unique string to name an anonymous type. */ | |
341 | ||
342 | static char * | |
343 | gen_fake_label () | |
344 | { | |
345 | char label[10]; | |
346 | char *labelstr; | |
347 | SDB_GENERATE_FAKE (label, unnamed_struct_number); | |
348 | unnamed_struct_number++; | |
349 | labelstr = (char *) permalloc (strlen (label) + 1); | |
350 | strcpy (labelstr, label); | |
351 | return labelstr; | |
352 | } | |
353 | \f | |
354 | /* Return the number which describes TYPE for SDB. | |
355 | For pointers, etc., this function is recursive. | |
356 | Each record, union or enumeral type must already have had a | |
357 | tag number output. */ | |
358 | ||
359 | /* The number is given by d6d5d4d3d2d1bbbb | |
360 | where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array. | |
361 | Thus, char *foo () has bbbb=T_CHAR | |
362 | d1=D_FCN | |
363 | d2=D_PTR | |
364 | N_BTMASK= 017 1111 basic type field. | |
365 | N_TSHIFT= 2 derived type shift | |
366 | N_BTSHFT= 4 Basic type shift */ | |
367 | ||
368 | /* Produce the number that describes a pointer, function or array type. | |
369 | PREV is the number describing the target, value or element type. | |
370 | DT_type describes how to transform that type. */ | |
aa7a5913 RS |
371 | #define PUSH_DERIVED_LEVEL(DT_type,PREV) \ |
372 | ((((PREV) & ~(int)N_BTMASK) << (int)N_TSHIFT) \ | |
373 | | ((int)DT_type << (int)N_BTSHFT) \ | |
374 | | ((PREV) & (int)N_BTMASK)) | |
37ba3390 RS |
375 | |
376 | /* Number of elements used in sdb_dims. */ | |
377 | static int sdb_n_dims = 0; | |
378 | ||
379 | /* Table of array dimensions of current type. */ | |
380 | static int sdb_dims[SDB_MAX_DIM]; | |
381 | ||
382 | /* Size of outermost array currently being processed. */ | |
383 | static int sdb_type_size = -1; | |
384 | ||
385 | static int | |
386 | plain_type (type) | |
387 | tree type; | |
388 | { | |
1a625283 | 389 | int val = plain_type_1 (type, 0); |
37ba3390 RS |
390 | |
391 | /* If we have already saved up some array dimensions, print them now. */ | |
392 | if (sdb_n_dims > 0) | |
393 | { | |
394 | int i; | |
395 | PUT_SDB_START_DIM; | |
396 | for (i = sdb_n_dims - 1; i > 0; i--) | |
397 | PUT_SDB_NEXT_DIM (sdb_dims[i]); | |
398 | PUT_SDB_LAST_DIM (sdb_dims[0]); | |
399 | sdb_n_dims = 0; | |
400 | ||
401 | sdb_type_size = int_size_in_bytes (type); | |
402 | /* Don't kill sdb if type is not laid out or has variable size. */ | |
403 | if (sdb_type_size < 0) | |
404 | sdb_type_size = 0; | |
405 | } | |
406 | /* If we have computed the size of an array containing this type, | |
407 | print it now. */ | |
408 | if (sdb_type_size >= 0) | |
409 | { | |
410 | PUT_SDB_SIZE (sdb_type_size); | |
411 | sdb_type_size = -1; | |
412 | } | |
413 | return val; | |
414 | } | |
415 | ||
4be2397b RS |
416 | static int |
417 | template_name_p (name) | |
418 | tree name; | |
419 | { | |
ebb13e7e | 420 | register const char *ptr = IDENTIFIER_POINTER (name); |
4be2397b RS |
421 | while (*ptr && *ptr != '<') |
422 | ptr++; | |
423 | ||
424 | return *ptr != '\0'; | |
425 | } | |
426 | ||
37ba3390 RS |
427 | static void |
428 | sdbout_record_type_name (type) | |
429 | tree type; | |
430 | { | |
ebb13e7e | 431 | const char *name = 0; |
37ba3390 RS |
432 | int no_name; |
433 | ||
434 | if (KNOWN_TYPE_TAG (type)) | |
435 | return; | |
436 | ||
437 | if (TYPE_NAME (type) != 0) | |
438 | { | |
439 | tree t = 0; | |
440 | /* Find the IDENTIFIER_NODE for the type name. */ | |
441 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
95b2ff8b | 442 | t = TYPE_NAME (type); |
12357e42 | 443 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) |
37ba3390 RS |
444 | { |
445 | t = DECL_NAME (TYPE_NAME (type)); | |
4be2397b RS |
446 | /* The DECL_NAME for templates includes "<>", which breaks |
447 | most assemblers. Use its assembler name instead, which | |
448 | has been mangled into being safe. */ | |
449 | if (t && template_name_p (t)) | |
450 | t = DECL_ASSEMBLER_NAME (TYPE_NAME (type)); | |
37ba3390 | 451 | } |
37ba3390 RS |
452 | |
453 | /* Now get the name as a string, or invent one. */ | |
4be2397b | 454 | if (t != NULL_TREE) |
37ba3390 RS |
455 | name = IDENTIFIER_POINTER (t); |
456 | } | |
457 | ||
458 | no_name = (name == 0 || *name == 0); | |
459 | if (no_name) | |
460 | name = gen_fake_label (); | |
461 | ||
462 | SET_KNOWN_TYPE_TAG (type, name); | |
463 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
464 | if (no_name) | |
465 | sdbout_queue_anonymous_type (type); | |
466 | #endif | |
467 | } | |
468 | ||
1a625283 JW |
469 | /* Return the .type value for type TYPE. |
470 | ||
471 | LEVEL indicates how many levels deep we have recursed into the type. | |
472 | The SDB debug format can only represent 6 derived levels of types. | |
473 | After that, we must output inaccurate debug info. We deliberately | |
474 | stop before the 7th level, so that ADA recursive types will not give an | |
475 | infinite loop. */ | |
476 | ||
37ba3390 | 477 | static int |
1a625283 | 478 | plain_type_1 (type, level) |
37ba3390 | 479 | tree type; |
1a625283 | 480 | int level; |
37ba3390 RS |
481 | { |
482 | if (type == 0) | |
483 | type = void_type_node; | |
1a625283 | 484 | else if (type == error_mark_node) |
37ba3390 | 485 | type = integer_type_node; |
1a625283 JW |
486 | else |
487 | type = TYPE_MAIN_VARIANT (type); | |
37ba3390 RS |
488 | |
489 | switch (TREE_CODE (type)) | |
490 | { | |
491 | case VOID_TYPE: | |
492 | return T_VOID; | |
a0587d56 | 493 | case BOOLEAN_TYPE: |
37ba3390 RS |
494 | case INTEGER_TYPE: |
495 | { | |
496 | int size = int_size_in_bytes (type) * BITS_PER_UNIT; | |
aed0ae9b JW |
497 | |
498 | /* Carefully distinguish all the standard types of C, | |
499 | without messing up if the language is not C. | |
500 | Note that we check only for the names that contain spaces; | |
501 | other names might occur by coincidence in other languages. */ | |
502 | if (TYPE_NAME (type) != 0 | |
503 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
504 | && DECL_NAME (TYPE_NAME (type)) != 0 | |
505 | && TREE_CODE (DECL_NAME (TYPE_NAME (type))) == IDENTIFIER_NODE) | |
506 | { | |
ebb13e7e RK |
507 | const char *name |
508 | = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))); | |
aed0ae9b | 509 | |
c85f7c16 JL |
510 | if (!strcmp (name, "char")) |
511 | return T_CHAR; | |
aed0ae9b JW |
512 | if (!strcmp (name, "unsigned char")) |
513 | return T_UCHAR; | |
514 | if (!strcmp (name, "signed char")) | |
515 | return T_CHAR; | |
c85f7c16 JL |
516 | if (!strcmp (name, "int")) |
517 | return T_INT; | |
aed0ae9b JW |
518 | if (!strcmp (name, "unsigned int")) |
519 | return T_UINT; | |
520 | if (!strcmp (name, "short int")) | |
521 | return T_SHORT; | |
522 | if (!strcmp (name, "short unsigned int")) | |
523 | return T_USHORT; | |
524 | if (!strcmp (name, "long int")) | |
525 | return T_LONG; | |
526 | if (!strcmp (name, "long unsigned int")) | |
527 | return T_ULONG; | |
528 | } | |
529 | ||
c85f7c16 JL |
530 | if (size == INT_TYPE_SIZE) |
531 | return (TREE_UNSIGNED (type) ? T_UINT : T_INT); | |
37ba3390 RS |
532 | if (size == CHAR_TYPE_SIZE) |
533 | return (TREE_UNSIGNED (type) ? T_UCHAR : T_CHAR); | |
534 | if (size == SHORT_TYPE_SIZE) | |
535 | return (TREE_UNSIGNED (type) ? T_USHORT : T_SHORT); | |
580b8ee2 RS |
536 | if (size == LONG_TYPE_SIZE) |
537 | return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG); | |
7726fc45 RK |
538 | if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */ |
539 | return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG); | |
37ba3390 RS |
540 | return 0; |
541 | } | |
542 | ||
543 | case REAL_TYPE: | |
544 | { | |
64c6526a JW |
545 | int precision = TYPE_PRECISION (type); |
546 | if (precision == FLOAT_TYPE_SIZE) | |
37ba3390 | 547 | return T_FLOAT; |
64c6526a | 548 | if (precision == DOUBLE_TYPE_SIZE) |
37ba3390 | 549 | return T_DOUBLE; |
64c6526a JW |
550 | #ifdef EXTENDED_SDB_BASIC_TYPES |
551 | if (precision == LONG_DOUBLE_TYPE_SIZE) | |
552 | return T_LNGDBL; | |
e5e809f4 JL |
553 | #else |
554 | if (precision == LONG_DOUBLE_TYPE_SIZE) | |
555 | return T_DOUBLE; /* better than nothing */ | |
64c6526a | 556 | #endif |
37ba3390 RS |
557 | return 0; |
558 | } | |
559 | ||
560 | case ARRAY_TYPE: | |
561 | { | |
562 | int m; | |
1a625283 JW |
563 | if (level >= 6) |
564 | return T_VOID; | |
565 | else | |
566 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
37ba3390 RS |
567 | if (sdb_n_dims < SDB_MAX_DIM) |
568 | sdb_dims[sdb_n_dims++] | |
569 | = (TYPE_DOMAIN (type) | |
665f2503 RK |
570 | && TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != 0 |
571 | && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != 0 | |
572 | && host_integerp (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0) | |
573 | && host_integerp (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) | |
574 | ? (tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), 0) | |
575 | - tree_low_cst (TYPE_MIN_VALUE (TYPE_DOMAIN (type)), 0) + 1) | |
37ba3390 | 576 | : 0); |
665f2503 | 577 | |
37ba3390 RS |
578 | return PUSH_DERIVED_LEVEL (DT_ARY, m); |
579 | } | |
580 | ||
581 | case RECORD_TYPE: | |
582 | case UNION_TYPE: | |
c1b98a95 | 583 | case QUAL_UNION_TYPE: |
37ba3390 RS |
584 | case ENUMERAL_TYPE: |
585 | { | |
586 | char *tag; | |
587 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
588 | sdbout_record_type_name (type); | |
589 | #endif | |
590 | #ifndef SDB_ALLOW_UNKNOWN_REFERENCES | |
591 | if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0) | |
592 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
593 | || TYPE_MODE (type) != VOIDmode | |
594 | #endif | |
595 | ) | |
596 | #endif | |
597 | { | |
598 | /* Output the referenced structure tag name | |
599 | only if the .def has already been finished. | |
600 | At least on 386, the Unix assembler | |
601 | cannot handle forward references to tags. */ | |
0f41302f MS |
602 | /* But the 88100, it requires them, sigh... */ |
603 | /* And the MIPS requires unknown refs as well... */ | |
37ba3390 RS |
604 | tag = KNOWN_TYPE_TAG (type); |
605 | PUT_SDB_TAG (tag); | |
606 | /* These 3 lines used to follow the close brace. | |
607 | However, a size of 0 without a tag implies a tag of 0, | |
608 | so if we don't know a tag, we can't mention the size. */ | |
609 | sdb_type_size = int_size_in_bytes (type); | |
610 | if (sdb_type_size < 0) | |
611 | sdb_type_size = 0; | |
612 | } | |
613 | return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT | |
614 | : (TREE_CODE (type) == UNION_TYPE) ? T_UNION | |
c1b98a95 | 615 | : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION |
37ba3390 RS |
616 | : T_ENUM); |
617 | } | |
618 | case POINTER_TYPE: | |
619 | case REFERENCE_TYPE: | |
620 | { | |
1a625283 JW |
621 | int m; |
622 | if (level >= 6) | |
623 | return T_VOID; | |
624 | else | |
625 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
37ba3390 RS |
626 | return PUSH_DERIVED_LEVEL (DT_PTR, m); |
627 | } | |
628 | case FUNCTION_TYPE: | |
629 | case METHOD_TYPE: | |
630 | { | |
1a625283 JW |
631 | int m; |
632 | if (level >= 6) | |
633 | return T_VOID; | |
634 | else | |
635 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
37ba3390 RS |
636 | return PUSH_DERIVED_LEVEL (DT_FCN, m); |
637 | } | |
638 | default: | |
639 | return 0; | |
640 | } | |
641 | } | |
642 | \f | |
643 | /* Output the symbols defined in block number DO_BLOCK. | |
37ba3390 RS |
644 | |
645 | This function works by walking the tree structure of blocks, | |
646 | counting blocks until it finds the desired block. */ | |
647 | ||
648 | static int do_block = 0; | |
649 | ||
37ba3390 RS |
650 | static void |
651 | sdbout_block (block) | |
652 | register tree block; | |
653 | { | |
654 | while (block) | |
655 | { | |
656 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
657 | if (TREE_USED (block)) | |
658 | { | |
659 | /* When we reach the specified block, output its symbols. */ | |
18c038b9 MM |
660 | if (BLOCK_NUMBER (block) == do_block) |
661 | sdbout_syms (BLOCK_VARS (block)); | |
37ba3390 RS |
662 | |
663 | /* If we are past the specified block, stop the scan. */ | |
18c038b9 | 664 | if (BLOCK_NUMBER (block) > do_block) |
37ba3390 RS |
665 | return; |
666 | ||
37ba3390 RS |
667 | /* Scan the blocks within this block. */ |
668 | sdbout_block (BLOCK_SUBBLOCKS (block)); | |
669 | } | |
670 | ||
671 | block = BLOCK_CHAIN (block); | |
672 | } | |
673 | } | |
674 | \f | |
675 | /* Call sdbout_symbol on each decl in the chain SYMS. */ | |
676 | ||
677 | static void | |
678 | sdbout_syms (syms) | |
679 | tree syms; | |
680 | { | |
681 | while (syms) | |
682 | { | |
5b7f1820 RS |
683 | if (TREE_CODE (syms) != LABEL_DECL) |
684 | sdbout_symbol (syms, 1); | |
37ba3390 RS |
685 | syms = TREE_CHAIN (syms); |
686 | } | |
687 | } | |
688 | ||
689 | /* Output SDB information for a symbol described by DECL. | |
690 | LOCAL is nonzero if the symbol is not file-scope. */ | |
691 | ||
692 | void | |
693 | sdbout_symbol (decl, local) | |
694 | tree decl; | |
695 | int local; | |
696 | { | |
37ba3390 RS |
697 | tree type = TREE_TYPE (decl); |
698 | tree context = NULL_TREE; | |
699 | rtx value; | |
700 | int regno = -1; | |
ebb13e7e | 701 | const char *name; |
37ba3390 | 702 | |
16d90796 RS |
703 | sdbout_one_type (type); |
704 | ||
705 | #if 0 /* This loses when functions are marked to be ignored, | |
706 | which happens in the C++ front end. */ | |
5e32e83b RS |
707 | if (DECL_IGNORED_P (decl)) |
708 | return; | |
16d90796 | 709 | #endif |
37ba3390 RS |
710 | |
711 | switch (TREE_CODE (decl)) | |
712 | { | |
713 | case CONST_DECL: | |
714 | /* Enum values are defined by defining the enum type. */ | |
715 | return; | |
716 | ||
717 | case FUNCTION_DECL: | |
718 | /* Don't mention a nested function under its parent. */ | |
719 | context = decl_function_context (decl); | |
720 | if (context == current_function_decl) | |
721 | return; | |
b01a1fdb JW |
722 | /* Check DECL_INITIAL to distinguish declarations from definitions. |
723 | Don't output debug info here for declarations; they will have | |
724 | a DECL_INITIAL value of 0. */ | |
725 | if (! DECL_INITIAL (decl)) | |
37ba3390 RS |
726 | return; |
727 | if (GET_CODE (DECL_RTL (decl)) != MEM | |
728 | || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF) | |
729 | return; | |
730 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
731 | PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
732 | PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT); | |
733 | break; | |
734 | ||
735 | case TYPE_DECL: | |
736 | /* Done with tagged types. */ | |
737 | if (DECL_NAME (decl) == 0) | |
738 | return; | |
16d90796 RS |
739 | if (DECL_IGNORED_P (decl)) |
740 | return; | |
37ba3390 RS |
741 | |
742 | /* Output typedef name. */ | |
4be2397b RS |
743 | if (template_name_p (DECL_NAME (decl))) |
744 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
745 | else | |
746 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl))); | |
37ba3390 RS |
747 | PUT_SDB_SCL (C_TPDEF); |
748 | break; | |
749 | ||
750 | case PARM_DECL: | |
751 | /* Parm decls go in their own separate chains | |
752 | and are output by sdbout_reg_parms and sdbout_parms. */ | |
753 | abort (); | |
754 | ||
755 | case VAR_DECL: | |
756 | /* Don't mention a variable that is external. | |
757 | Let the file that defines it describe it. */ | |
216d5cdd | 758 | if (DECL_EXTERNAL (decl)) |
37ba3390 RS |
759 | return; |
760 | ||
16d90796 RS |
761 | /* Ignore __FUNCTION__, etc. */ |
762 | if (DECL_IGNORED_P (decl)) | |
763 | return; | |
764 | ||
37ba3390 RS |
765 | /* If there was an error in the declaration, don't dump core |
766 | if there is no RTL associated with the variable doesn't | |
767 | exist. */ | |
d975d8c3 | 768 | if (!DECL_RTL_SET_P (decl)) |
37ba3390 RS |
769 | return; |
770 | ||
d975d8c3 MM |
771 | SET_DECL_RTL (decl, |
772 | eliminate_regs (DECL_RTL (decl), 0, NULL_RTX)); | |
bf1e8c4d | 773 | #ifdef LEAF_REG_REMAP |
54ff41b7 | 774 | if (current_function_uses_only_leaf_regs) |
bf1e8c4d RS |
775 | leaf_renumber_regs_insn (DECL_RTL (decl)); |
776 | #endif | |
777 | value = DECL_RTL (decl); | |
37ba3390 RS |
778 | |
779 | /* Don't mention a variable at all | |
780 | if it was completely optimized into nothingness. | |
781 | ||
782 | If DECL was from an inline function, then its rtl | |
783 | is not identically the rtl that was used in this | |
784 | particular compilation. */ | |
785 | if (GET_CODE (value) == REG) | |
786 | { | |
787 | regno = REGNO (DECL_RTL (decl)); | |
788 | if (regno >= FIRST_PSEUDO_REGISTER) | |
37ba3390 RS |
789 | return; |
790 | } | |
bf1e8c4d | 791 | else if (GET_CODE (value) == SUBREG) |
37ba3390 | 792 | { |
37ba3390 | 793 | while (GET_CODE (value) == SUBREG) |
ddef6bc7 | 794 | value = SUBREG_REG (value); |
37ba3390 RS |
795 | if (GET_CODE (value) == REG) |
796 | { | |
ddef6bc7 | 797 | if (REGNO (value) >= FIRST_PSEUDO_REGISTER) |
bf1e8c4d | 798 | return; |
37ba3390 | 799 | } |
ddef6bc7 | 800 | regno = REGNO (alter_subreg (DECL_RTL (decl))); |
bf1e8c4d | 801 | value = DECL_RTL (decl); |
37ba3390 | 802 | } |
39eae9f4 RS |
803 | /* Don't output anything if an auto variable |
804 | gets RTL that is static. | |
805 | GAS version 2.2 can't handle such output. */ | |
806 | else if (GET_CODE (value) == MEM && CONSTANT_P (XEXP (value, 0)) | |
807 | && ! TREE_STATIC (decl)) | |
808 | return; | |
37ba3390 RS |
809 | |
810 | /* Emit any structure, union, or enum type that has not been output. | |
811 | This occurs for tag-less structs (et al) used to declare variables | |
812 | within functions. */ | |
813 | if (TREE_CODE (type) == ENUMERAL_TYPE | |
814 | || TREE_CODE (type) == RECORD_TYPE | |
c1b98a95 RK |
815 | || TREE_CODE (type) == UNION_TYPE |
816 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
37ba3390 | 817 | { |
d0f062fb | 818 | if (COMPLETE_TYPE_P (type) /* not a forward reference */ |
37ba3390 RS |
819 | && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */ |
820 | sdbout_one_type (type); | |
821 | } | |
822 | ||
823 | /* Defer SDB information for top-level initialized variables! */ | |
824 | if (! local | |
825 | && GET_CODE (value) == MEM | |
826 | && DECL_INITIAL (decl)) | |
827 | return; | |
828 | ||
ed5f8355 RS |
829 | /* C++ in 2.3 makes nameless symbols. That will be fixed later. |
830 | For now, avoid crashing. */ | |
831 | if (DECL_NAME (decl) == NULL_TREE) | |
832 | return; | |
833 | ||
37ba3390 | 834 | /* Record the name for, starting a symtab entry. */ |
4eadbbd5 RK |
835 | if (local) |
836 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
837 | else | |
838 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); | |
37ba3390 RS |
839 | |
840 | if (GET_CODE (value) == MEM | |
841 | && GET_CODE (XEXP (value, 0)) == SYMBOL_REF) | |
842 | { | |
843 | PUT_SDB_DEF (name); | |
844 | if (TREE_PUBLIC (decl)) | |
845 | { | |
846 | PUT_SDB_VAL (XEXP (value, 0)); | |
847 | PUT_SDB_SCL (C_EXT); | |
848 | } | |
849 | else | |
850 | { | |
851 | PUT_SDB_VAL (XEXP (value, 0)); | |
852 | PUT_SDB_SCL (C_STAT); | |
853 | } | |
854 | } | |
855 | else if (regno >= 0) | |
856 | { | |
857 | PUT_SDB_DEF (name); | |
858 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno)); | |
859 | PUT_SDB_SCL (C_REG); | |
860 | } | |
861 | else if (GET_CODE (value) == MEM | |
862 | && (GET_CODE (XEXP (value, 0)) == MEM | |
863 | || (GET_CODE (XEXP (value, 0)) == REG | |
d8a0edf4 | 864 | && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM |
5b7f1820 | 865 | && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM))) |
37ba3390 RS |
866 | /* If the value is indirect by memory or by a register |
867 | that isn't the frame pointer | |
868 | then it means the object is variable-sized and address through | |
869 | that register or stack slot. COFF has no way to represent this | |
870 | so all we can do is output the variable as a pointer. */ | |
871 | { | |
872 | PUT_SDB_DEF (name); | |
873 | if (GET_CODE (XEXP (value, 0)) == REG) | |
874 | { | |
875 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0)))); | |
876 | PUT_SDB_SCL (C_REG); | |
877 | } | |
878 | else | |
879 | { | |
880 | /* DECL_RTL looks like (MEM (MEM (PLUS (REG...) | |
881 | (CONST_INT...)))). | |
882 | We want the value of that CONST_INT. */ | |
883 | /* Encore compiler hates a newline in a macro arg, it seems. */ | |
884 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
885 | (XEXP (XEXP (value, 0), 0))); | |
886 | PUT_SDB_SCL (C_AUTO); | |
887 | } | |
888 | ||
a51a5234 JL |
889 | /* Effectively do build_pointer_type, but don't cache this type, |
890 | since it might be temporary whereas the type it points to | |
891 | might have been saved for inlining. */ | |
892 | /* Don't use REFERENCE_TYPE because dbx can't handle that. */ | |
893 | type = make_node (POINTER_TYPE); | |
894 | TREE_TYPE (type) = TREE_TYPE (decl); | |
37ba3390 RS |
895 | } |
896 | else if (GET_CODE (value) == MEM | |
6d55e0ab JW |
897 | && ((GET_CODE (XEXP (value, 0)) == PLUS |
898 | && GET_CODE (XEXP (XEXP (value, 0), 0)) == REG | |
899 | && GET_CODE (XEXP (XEXP (value, 0), 1)) == CONST_INT) | |
900 | /* This is for variables which are at offset zero from | |
901 | the frame pointer. This happens on the Alpha. | |
902 | Non-frame pointer registers are excluded above. */ | |
903 | || (GET_CODE (XEXP (value, 0)) == REG))) | |
37ba3390 | 904 | { |
6d55e0ab JW |
905 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) |
906 | or (MEM (REG...)). We want the value of that CONST_INT | |
907 | or zero. */ | |
37ba3390 RS |
908 | PUT_SDB_DEF (name); |
909 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0))); | |
910 | PUT_SDB_SCL (C_AUTO); | |
911 | } | |
5b7f1820 RS |
912 | else if (GET_CODE (value) == MEM && GET_CODE (XEXP (value, 0)) == CONST) |
913 | { | |
914 | /* Handle an obscure case which can arise when optimizing and | |
915 | when there are few available registers. (This is *always* | |
916 | the case for i386/i486 targets). The DECL_RTL looks like | |
917 | (MEM (CONST ...)) even though this variable is a local `auto' | |
918 | or a local `register' variable. In effect, what has happened | |
919 | is that the reload pass has seen that all assignments and | |
920 | references for one such a local variable can be replaced by | |
921 | equivalent assignments and references to some static storage | |
922 | variable, thereby avoiding the need for a register. In such | |
923 | cases we're forced to lie to debuggers and tell them that | |
924 | this variable was itself `static'. */ | |
925 | PUT_SDB_DEF (name); | |
926 | PUT_SDB_VAL (XEXP (XEXP (value, 0), 0)); | |
927 | PUT_SDB_SCL (C_STAT); | |
928 | } | |
37ba3390 RS |
929 | else |
930 | { | |
931 | /* It is something we don't know how to represent for SDB. */ | |
932 | return; | |
933 | } | |
934 | break; | |
1d300e19 KG |
935 | |
936 | default: | |
937 | break; | |
37ba3390 RS |
938 | } |
939 | PUT_SDB_TYPE (plain_type (type)); | |
940 | PUT_SDB_ENDEF; | |
941 | } | |
942 | \f | |
943 | /* Output SDB information for a top-level initialized variable | |
944 | that has been delayed. */ | |
945 | ||
946 | void | |
947 | sdbout_toplevel_data (decl) | |
948 | tree decl; | |
949 | { | |
950 | tree type = TREE_TYPE (decl); | |
951 | ||
5e32e83b RS |
952 | if (DECL_IGNORED_P (decl)) |
953 | return; | |
954 | ||
37ba3390 RS |
955 | if (! (TREE_CODE (decl) == VAR_DECL |
956 | && GET_CODE (DECL_RTL (decl)) == MEM | |
957 | && DECL_INITIAL (decl))) | |
958 | abort (); | |
959 | ||
960 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
961 | PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
962 | if (TREE_PUBLIC (decl)) | |
963 | { | |
964 | PUT_SDB_SCL (C_EXT); | |
965 | } | |
966 | else | |
967 | { | |
968 | PUT_SDB_SCL (C_STAT); | |
969 | } | |
970 | PUT_SDB_TYPE (plain_type (type)); | |
971 | PUT_SDB_ENDEF; | |
972 | } | |
973 | \f | |
974 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
975 | ||
0f41302f | 976 | /* Machinery to record and output anonymous types. */ |
37ba3390 RS |
977 | |
978 | static tree anonymous_types; | |
979 | ||
980 | static void | |
981 | sdbout_queue_anonymous_type (type) | |
982 | tree type; | |
983 | { | |
1f8f4a0b | 984 | anonymous_types = tree_cons (NULL_TREE, type, anonymous_types); |
37ba3390 RS |
985 | } |
986 | ||
987 | static void | |
988 | sdbout_dequeue_anonymous_types () | |
989 | { | |
990 | register tree types, link; | |
991 | ||
992 | while (anonymous_types) | |
993 | { | |
994 | types = nreverse (anonymous_types); | |
995 | anonymous_types = NULL_TREE; | |
996 | ||
997 | for (link = types; link; link = TREE_CHAIN (link)) | |
998 | { | |
999 | register tree type = TREE_VALUE (link); | |
1000 | ||
c325abbd | 1001 | if (type && ! TREE_ASM_WRITTEN (type)) |
37ba3390 RS |
1002 | sdbout_one_type (type); |
1003 | } | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | #endif | |
1008 | \f | |
1009 | /* Given a chain of ..._TYPE nodes, all of which have names, | |
1010 | output definitions of those names, as typedefs. */ | |
1011 | ||
1012 | void | |
1013 | sdbout_types (types) | |
1014 | register tree types; | |
1015 | { | |
1016 | register tree link; | |
1017 | ||
1018 | for (link = types; link; link = TREE_CHAIN (link)) | |
1019 | sdbout_one_type (link); | |
1020 | ||
1021 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1022 | sdbout_dequeue_anonymous_types (); | |
1023 | #endif | |
1024 | } | |
1025 | ||
1026 | static void | |
1027 | sdbout_type (type) | |
1028 | tree type; | |
1029 | { | |
37ba3390 RS |
1030 | if (type == error_mark_node) |
1031 | type = integer_type_node; | |
1032 | PUT_SDB_TYPE (plain_type (type)); | |
1033 | } | |
1034 | ||
1035 | /* Output types of the fields of type TYPE, if they are structs. | |
1036 | ||
1037 | Formerly did not chase through pointer types, since that could be circular. | |
1038 | They must come before TYPE, since forward refs are not allowed. | |
1039 | Now james@bigtex.cactus.org says to try them. */ | |
1040 | ||
1041 | static void | |
1042 | sdbout_field_types (type) | |
1043 | tree type; | |
1044 | { | |
1045 | tree tail; | |
e5e809f4 | 1046 | |
37ba3390 | 1047 | for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail)) |
1270a9b3 LB |
1048 | /* This condition should match the one for emitting the actual |
1049 | members below. */ | |
0dbb7a10 | 1050 | if (TREE_CODE (tail) == FIELD_DECL |
1270a9b3 LB |
1051 | && DECL_NAME (tail) |
1052 | && DECL_SIZE (tail) | |
1053 | && host_integerp (DECL_SIZE (tail), 1) | |
1054 | && host_integerp (bit_position (tail), 0)) | |
0dbb7a10 JM |
1055 | { |
1056 | if (POINTER_TYPE_P (TREE_TYPE (tail))) | |
1057 | sdbout_one_type (TREE_TYPE (TREE_TYPE (tail))); | |
1058 | else | |
1059 | sdbout_one_type (TREE_TYPE (tail)); | |
1060 | } | |
37ba3390 RS |
1061 | } |
1062 | ||
1063 | /* Use this to put out the top level defined record and union types | |
1064 | for later reference. If this is a struct with a name, then put that | |
1065 | name out. Other unnamed structs will have .xxfake labels generated so | |
1066 | that they may be referred to later. | |
1067 | The label will be stored in the KNOWN_TYPE_TAG slot of a type. | |
1068 | It may NOT be called recursively. */ | |
1069 | ||
1070 | static void | |
1071 | sdbout_one_type (type) | |
1072 | tree type; | |
1073 | { | |
509b12e0 JW |
1074 | if (current_function_decl != NULL_TREE |
1075 | && DECL_SECTION_NAME (current_function_decl) != NULL_TREE) | |
1076 | ; /* Don't change section amid function. */ | |
1077 | else | |
1078 | text_section (); | |
37ba3390 RS |
1079 | |
1080 | switch (TREE_CODE (type)) | |
1081 | { | |
1082 | case RECORD_TYPE: | |
1083 | case UNION_TYPE: | |
c1b98a95 | 1084 | case QUAL_UNION_TYPE: |
37ba3390 RS |
1085 | case ENUMERAL_TYPE: |
1086 | type = TYPE_MAIN_VARIANT (type); | |
1087 | /* Don't output a type twice. */ | |
1088 | if (TREE_ASM_WRITTEN (type)) | |
1089 | /* James said test TREE_ASM_BEING_WRITTEN here. */ | |
1090 | return; | |
1091 | ||
1092 | /* Output nothing if type is not yet defined. */ | |
d0f062fb | 1093 | if (!COMPLETE_TYPE_P (type)) |
37ba3390 RS |
1094 | return; |
1095 | ||
1096 | TREE_ASM_WRITTEN (type) = 1; | |
1097 | #if 1 | |
1098 | /* This is reputed to cause trouble with the following case, | |
638e2294 | 1099 | but perhaps checking TYPE_SIZE above will fix it. */ |
37ba3390 RS |
1100 | |
1101 | /* Here is a test case: | |
1102 | ||
1103 | struct foo { | |
1104 | struct badstr *bbb; | |
1105 | } forwardref; | |
1106 | ||
1107 | typedef struct intermediate { | |
1108 | int aaaa; | |
1109 | } intermediate_ref; | |
1110 | ||
1111 | typedef struct badstr { | |
1112 | int ccccc; | |
1113 | } badtype; */ | |
1114 | ||
1115 | #if 0 | |
1116 | TREE_ASM_BEING_WRITTEN (type) = 1; | |
1117 | #endif | |
1118 | /* This change, which ought to make better output, | |
1119 | used to make the COFF assembler unhappy. | |
1120 | Changes involving KNOWN_TYPE_TAG may fix the problem. */ | |
1121 | /* Before really doing anything, output types we want to refer to. */ | |
1122 | /* Note that in version 1 the following two lines | |
1123 | are not used if forward references are in use. */ | |
1124 | if (TREE_CODE (type) != ENUMERAL_TYPE) | |
1125 | sdbout_field_types (type); | |
1126 | #if 0 | |
1127 | TREE_ASM_WRITTEN (type) = 1; | |
1128 | #endif | |
1129 | #endif | |
1130 | ||
1131 | /* Output a structure type. */ | |
1132 | { | |
1133 | int size = int_size_in_bytes (type); | |
a544cfd2 | 1134 | int member_scl = 0; |
37ba3390 | 1135 | tree tem; |
5b7f1820 | 1136 | int i, n_baseclasses = 0; |
37ba3390 RS |
1137 | |
1138 | /* Record the type tag, but not in its permanent place just yet. */ | |
1139 | sdbout_record_type_name (type); | |
1140 | ||
1141 | PUT_SDB_DEF (KNOWN_TYPE_TAG (type)); | |
1142 | ||
1143 | switch (TREE_CODE (type)) | |
1144 | { | |
1145 | case UNION_TYPE: | |
c1b98a95 | 1146 | case QUAL_UNION_TYPE: |
37ba3390 RS |
1147 | PUT_SDB_SCL (C_UNTAG); |
1148 | PUT_SDB_TYPE (T_UNION); | |
1149 | member_scl = C_MOU; | |
1150 | break; | |
1151 | ||
1152 | case RECORD_TYPE: | |
1153 | PUT_SDB_SCL (C_STRTAG); | |
1154 | PUT_SDB_TYPE (T_STRUCT); | |
1155 | member_scl = C_MOS; | |
1156 | break; | |
1157 | ||
1158 | case ENUMERAL_TYPE: | |
1159 | PUT_SDB_SCL (C_ENTAG); | |
1160 | PUT_SDB_TYPE (T_ENUM); | |
1161 | member_scl = C_MOE; | |
1162 | break; | |
1d300e19 KG |
1163 | |
1164 | default: | |
1165 | break; | |
37ba3390 RS |
1166 | } |
1167 | ||
1168 | PUT_SDB_SIZE (size); | |
1169 | PUT_SDB_ENDEF; | |
1170 | ||
5b7f1820 RS |
1171 | /* Print out the base class information with fields |
1172 | named after the types they hold. */ | |
46fb0d7d JW |
1173 | /* This is only relevent to aggregate types. TYPE_BINFO is used |
1174 | for other purposes in an ENUMERAL_TYPE, so we must exclude that | |
1175 | case. */ | |
1176 | if (TREE_CODE (type) != ENUMERAL_TYPE) | |
5b7f1820 | 1177 | { |
46fb0d7d JW |
1178 | if (TYPE_BINFO (type) |
1179 | && TYPE_BINFO_BASETYPES (type)) | |
1180 | n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type)); | |
1181 | for (i = 0; i < n_baseclasses; i++) | |
ee3e2d3d | 1182 | { |
46fb0d7d JW |
1183 | tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)), |
1184 | i); | |
1185 | tree child_type = BINFO_TYPE (child); | |
1186 | tree child_type_name; | |
1187 | if (TYPE_NAME (child_type) == 0) | |
1188 | continue; | |
1189 | if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE) | |
1190 | child_type_name = TYPE_NAME (child_type); | |
1191 | else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL) | |
1192 | { | |
1193 | child_type_name = DECL_NAME (TYPE_NAME (child_type)); | |
1194 | if (child_type_name && template_name_p (child_type_name)) | |
1195 | child_type_name | |
1196 | = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type)); | |
1197 | } | |
1198 | else | |
1199 | continue; | |
1200 | ||
1201 | CONTIN; | |
1202 | PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name)); | |
665f2503 | 1203 | PUT_SDB_INT_VAL (tree_low_cst (BINFO_OFFSET (child), 0)); |
46fb0d7d JW |
1204 | PUT_SDB_SCL (member_scl); |
1205 | sdbout_type (BINFO_TYPE (child)); | |
1206 | PUT_SDB_ENDEF; | |
ee3e2d3d | 1207 | } |
5b7f1820 RS |
1208 | } |
1209 | ||
37ba3390 RS |
1210 | /* output the individual fields */ |
1211 | ||
1212 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
bf5e8d0c AJ |
1213 | { |
1214 | for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) | |
1215 | if (host_integerp (TREE_VALUE (tem), 0)) | |
1216 | { | |
1217 | PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem))); | |
1218 | PUT_SDB_INT_VAL (tree_low_cst (TREE_VALUE (tem), 0)); | |
1219 | PUT_SDB_SCL (C_MOE); | |
1220 | PUT_SDB_TYPE (T_MOE); | |
1221 | PUT_SDB_ENDEF; | |
1222 | } | |
1223 | } | |
37ba3390 RS |
1224 | else /* record or union type */ |
1225 | for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) | |
1226 | /* Output the name, type, position (in bits), size (in bits) | |
1227 | of each field. */ | |
1228 | ||
1229 | /* Omit here the nameless fields that are used to skip bits. | |
1230 | Also omit fields with variable size or position. | |
1231 | Also omit non FIELD_DECL nodes that GNU C++ may put here. */ | |
1232 | if (TREE_CODE (tem) == FIELD_DECL | |
1270a9b3 LB |
1233 | && DECL_NAME (tem) |
1234 | && DECL_SIZE (tem) | |
665f2503 RK |
1235 | && host_integerp (DECL_SIZE (tem), 1) |
1236 | && host_integerp (bit_position (tem), 0)) | |
37ba3390 | 1237 | { |
ebb13e7e | 1238 | const char *name; |
0eb111c2 | 1239 | |
37ba3390 | 1240 | CONTIN; |
4eadbbd5 | 1241 | name = IDENTIFIER_POINTER (DECL_NAME (tem)); |
0eb111c2 | 1242 | PUT_SDB_DEF (name); |
37ba3390 RS |
1243 | if (DECL_BIT_FIELD_TYPE (tem)) |
1244 | { | |
665f2503 | 1245 | PUT_SDB_INT_VAL (int_bit_position (tem)); |
37ba3390 RS |
1246 | PUT_SDB_SCL (C_FIELD); |
1247 | sdbout_type (DECL_BIT_FIELD_TYPE (tem)); | |
665f2503 | 1248 | PUT_SDB_SIZE (tree_low_cst (DECL_SIZE (tem), 1)); |
37ba3390 RS |
1249 | } |
1250 | else | |
1251 | { | |
665f2503 | 1252 | PUT_SDB_INT_VAL (int_bit_position (tem) / BITS_PER_UNIT); |
37ba3390 RS |
1253 | PUT_SDB_SCL (member_scl); |
1254 | sdbout_type (TREE_TYPE (tem)); | |
1255 | } | |
1256 | PUT_SDB_ENDEF; | |
1257 | } | |
1258 | /* output end of a structure,union, or enumeral definition */ | |
1259 | ||
1260 | PUT_SDB_PLAIN_DEF ("eos"); | |
1261 | PUT_SDB_INT_VAL (size); | |
1262 | PUT_SDB_SCL (C_EOS); | |
1263 | PUT_SDB_TAG (KNOWN_TYPE_TAG (type)); | |
1264 | PUT_SDB_SIZE (size); | |
1265 | PUT_SDB_ENDEF; | |
1266 | break; | |
1d300e19 KG |
1267 | |
1268 | default: | |
1269 | break; | |
37ba3390 RS |
1270 | } |
1271 | } | |
1272 | } | |
1273 | \f | |
1274 | /* The following two functions output definitions of function parameters. | |
1275 | Each parameter gets a definition locating it in the parameter list. | |
1276 | Each parameter that is a register variable gets a second definition | |
1277 | locating it in the register. | |
1278 | ||
1279 | Printing or argument lists in gdb uses the definitions that | |
1280 | locate in the parameter list. But reference to the variable in | |
1281 | expressions uses preferentially the definition as a register. */ | |
1282 | ||
1283 | /* Output definitions, referring to storage in the parmlist, | |
1284 | of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ | |
1285 | ||
1286 | static void | |
1287 | sdbout_parms (parms) | |
1288 | tree parms; | |
1289 | { | |
1290 | for (; parms; parms = TREE_CHAIN (parms)) | |
1291 | if (DECL_NAME (parms)) | |
1292 | { | |
1293 | int current_sym_value = 0; | |
ebb13e7e | 1294 | const char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); |
37ba3390 RS |
1295 | |
1296 | if (name == 0 || *name == 0) | |
1297 | name = gen_fake_label (); | |
1298 | ||
1299 | /* Perform any necessary register eliminations on the parameter's rtl, | |
1300 | so that the debugging output will be accurate. */ | |
db3cf6fb | 1301 | DECL_INCOMING_RTL (parms) |
1914f5da | 1302 | = eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX); |
d975d8c3 MM |
1303 | SET_DECL_RTL (parms, |
1304 | eliminate_regs (DECL_RTL (parms), 0, NULL_RTX)); | |
37ba3390 RS |
1305 | |
1306 | if (PARM_PASSED_IN_MEMORY (parms)) | |
1307 | { | |
1308 | rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0); | |
1309 | tree type; | |
1310 | ||
1311 | /* ??? Here we assume that the parm address is indexed | |
1312 | off the frame pointer or arg pointer. | |
1313 | If that is not true, we produce meaningless results, | |
1314 | but do not crash. */ | |
1315 | if (GET_CODE (addr) == PLUS | |
1316 | && GET_CODE (XEXP (addr, 1)) == CONST_INT) | |
1317 | current_sym_value = INTVAL (XEXP (addr, 1)); | |
1318 | else | |
1319 | current_sym_value = 0; | |
1320 | ||
1321 | if (GET_CODE (DECL_RTL (parms)) == REG | |
37ba3390 RS |
1322 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
1323 | type = DECL_ARG_TYPE (parms); | |
1324 | else | |
1325 | { | |
1326 | int original_sym_value = current_sym_value; | |
1327 | ||
1328 | /* This is the case where the parm is passed as an int or | |
1329 | double and it is converted to a char, short or float | |
1330 | and stored back in the parmlist. In this case, describe | |
1331 | the parm with the variable's declared type, and adjust | |
1332 | the address if the least significant bytes (which we are | |
1333 | using) are not the first ones. */ | |
f76b9db2 ILT |
1334 | if (BYTES_BIG_ENDIAN |
1335 | && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
37ba3390 RS |
1336 | current_sym_value += |
1337 | (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
1338 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
f76b9db2 | 1339 | |
37ba3390 RS |
1340 | if (GET_CODE (DECL_RTL (parms)) == MEM |
1341 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
1342 | && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
1343 | == CONST_INT) | |
1344 | && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
1345 | == current_sym_value)) | |
1346 | type = TREE_TYPE (parms); | |
1347 | else | |
1348 | { | |
1349 | current_sym_value = original_sym_value; | |
1350 | type = DECL_ARG_TYPE (parms); | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | PUT_SDB_DEF (name); | |
1355 | PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr)); | |
1356 | PUT_SDB_SCL (C_ARG); | |
1357 | PUT_SDB_TYPE (plain_type (type)); | |
1358 | PUT_SDB_ENDEF; | |
1359 | } | |
1360 | else if (GET_CODE (DECL_RTL (parms)) == REG) | |
1361 | { | |
1362 | rtx best_rtl; | |
1363 | /* Parm passed in registers and lives in registers or nowhere. */ | |
1364 | ||
1365 | /* If parm lives in a register, use that register; | |
1366 | pretend the parm was passed there. It would be more consistent | |
1367 | to describe the register where the parm was passed, | |
1368 | but in practice that register usually holds something else. */ | |
770ae6cc | 1369 | if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) |
37ba3390 RS |
1370 | best_rtl = DECL_RTL (parms); |
1371 | /* If the parm lives nowhere, | |
1372 | use the register where it was passed. */ | |
1373 | else | |
1374 | best_rtl = DECL_INCOMING_RTL (parms); | |
1375 | ||
1376 | PUT_SDB_DEF (name); | |
1377 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl))); | |
1378 | PUT_SDB_SCL (C_REGPARM); | |
21abd7a6 | 1379 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
37ba3390 RS |
1380 | PUT_SDB_ENDEF; |
1381 | } | |
1382 | else if (GET_CODE (DECL_RTL (parms)) == MEM | |
1383 | && XEXP (DECL_RTL (parms), 0) != const0_rtx) | |
1384 | { | |
1385 | /* Parm was passed in registers but lives on the stack. */ | |
1386 | ||
1387 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), | |
1388 | in which case we want the value of that CONST_INT, | |
1389 | or (MEM (REG ...)) or (MEM (MEM ...)), | |
1390 | in which case we use a value of zero. */ | |
1391 | if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG | |
1392 | || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM) | |
1393 | current_sym_value = 0; | |
1394 | else | |
1395 | current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); | |
1396 | ||
1397 | /* Again, this assumes the offset is based on the arg pointer. */ | |
1398 | PUT_SDB_DEF (name); | |
1399 | PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, | |
1400 | XEXP (DECL_RTL (parms), 0))); | |
1401 | PUT_SDB_SCL (C_ARG); | |
21abd7a6 | 1402 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
37ba3390 RS |
1403 | PUT_SDB_ENDEF; |
1404 | } | |
1405 | } | |
1406 | } | |
1407 | ||
1408 | /* Output definitions for the places where parms live during the function, | |
1409 | when different from where they were passed, when the parms were passed | |
1410 | in memory. | |
1411 | ||
1412 | It is not useful to do this for parms passed in registers | |
1413 | that live during the function in different registers, because it is | |
1414 | impossible to look in the passed register for the passed value, | |
1415 | so we use the within-the-function register to begin with. | |
1416 | ||
1417 | PARMS is a chain of PARM_DECL nodes. */ | |
1418 | ||
1419 | static void | |
1420 | sdbout_reg_parms (parms) | |
1421 | tree parms; | |
1422 | { | |
1423 | for (; parms; parms = TREE_CHAIN (parms)) | |
1424 | if (DECL_NAME (parms)) | |
1425 | { | |
ebb13e7e | 1426 | const char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); |
37ba3390 RS |
1427 | |
1428 | /* Report parms that live in registers during the function | |
1429 | but were passed in memory. */ | |
1430 | if (GET_CODE (DECL_RTL (parms)) == REG | |
37ba3390 RS |
1431 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER |
1432 | && PARM_PASSED_IN_MEMORY (parms)) | |
1433 | { | |
1434 | if (name == 0 || *name == 0) | |
1435 | name = gen_fake_label (); | |
1436 | PUT_SDB_DEF (name); | |
1437 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms)))); | |
1438 | PUT_SDB_SCL (C_REG); | |
21abd7a6 | 1439 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
37ba3390 RS |
1440 | PUT_SDB_ENDEF; |
1441 | } | |
1442 | /* Report parms that live in memory but not where they were passed. */ | |
1443 | else if (GET_CODE (DECL_RTL (parms)) == MEM | |
1444 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
1445 | && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT | |
1446 | && PARM_PASSED_IN_MEMORY (parms) | |
1447 | && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) | |
1448 | { | |
1449 | #if 0 /* ??? It is not clear yet what should replace this. */ | |
1450 | int offset = DECL_OFFSET (parms) / BITS_PER_UNIT; | |
1451 | /* A parm declared char is really passed as an int, | |
1452 | so it occupies the least significant bytes. | |
1453 | On a big-endian machine those are not the low-numbered ones. */ | |
f76b9db2 ILT |
1454 | if (BYTES_BIG_ENDIAN |
1455 | && offset != -1 | |
1456 | && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
37ba3390 RS |
1457 | offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) |
1458 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
37ba3390 RS |
1459 | if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...} |
1460 | #endif | |
1461 | { | |
1462 | if (name == 0 || *name == 0) | |
1463 | name = gen_fake_label (); | |
1464 | PUT_SDB_DEF (name); | |
1465 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
1466 | (XEXP (DECL_RTL (parms), 0))); | |
1467 | PUT_SDB_SCL (C_AUTO); | |
1468 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
1469 | PUT_SDB_ENDEF; | |
1470 | } | |
1471 | } | |
1472 | } | |
1473 | } | |
1474 | \f | |
1475 | /* Describe the beginning of an internal block within a function. | |
1476 | Also output descriptions of variables defined in this block. | |
1477 | ||
1478 | N is the number of the block, by order of beginning, counting from 1, | |
1479 | and not counting the outermost (function top-level) block. | |
1480 | The blocks match the BLOCKs in DECL_INITIAL (current_function_decl), | |
1481 | if the count starts at 0 for the outermost one. */ | |
1482 | ||
a5a42b92 | 1483 | static void |
e2a12aca | 1484 | sdbout_begin_block (line, n) |
a5a42b92 NB |
1485 | unsigned int line; |
1486 | unsigned int n; | |
37ba3390 RS |
1487 | { |
1488 | tree decl = current_function_decl; | |
1489 | MAKE_LINE_SAFE (line); | |
9f27ca8b JW |
1490 | |
1491 | /* The SCO compiler does not emit a separate block for the function level | |
1492 | scope, so we avoid it here also. However, mips ECOFF compilers do emit | |
1493 | a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */ | |
1494 | #ifndef MIPS_DEBUGGING_INFO | |
1495 | if (n != 1) | |
1496 | #endif | |
1497 | PUT_SDB_BLOCK_START (line - sdb_begin_function_line); | |
1498 | ||
37ba3390 RS |
1499 | if (n == 1) |
1500 | { | |
1501 | /* Include the outermost BLOCK's variables in block 1. */ | |
18c038b9 | 1502 | do_block = BLOCK_NUMBER (DECL_INITIAL (decl)); |
37ba3390 RS |
1503 | sdbout_block (DECL_INITIAL (decl)); |
1504 | } | |
1505 | /* If -g1, suppress all the internal symbols of functions | |
1506 | except for arguments. */ | |
1507 | if (debug_info_level != DINFO_LEVEL_TERSE) | |
1508 | { | |
37ba3390 RS |
1509 | do_block = n; |
1510 | sdbout_block (DECL_INITIAL (decl)); | |
1511 | } | |
1512 | ||
1513 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1514 | sdbout_dequeue_anonymous_types (); | |
1515 | #endif | |
1516 | } | |
1517 | ||
1518 | /* Describe the end line-number of an internal block within a function. */ | |
1519 | ||
e2a12aca NB |
1520 | static void |
1521 | sdbout_end_block (line, n) | |
a5a42b92 NB |
1522 | unsigned int line; |
1523 | unsigned int n ATTRIBUTE_UNUSED; | |
37ba3390 RS |
1524 | { |
1525 | MAKE_LINE_SAFE (line); | |
9f27ca8b JW |
1526 | |
1527 | /* The SCO compiler does not emit a separate block for the function level | |
1528 | scope, so we avoid it here also. However, mips ECOFF compilers do emit | |
1529 | a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */ | |
1530 | #ifndef MIPS_DEBUGGING_INFO | |
1531 | if (n != 1) | |
1532 | #endif | |
37ba3390 RS |
1533 | PUT_SDB_BLOCK_END (line - sdb_begin_function_line); |
1534 | } | |
1535 | ||
e2a12aca | 1536 | static void |
653e276c NB |
1537 | sdbout_source_line (line, filename) |
1538 | unsigned int line; | |
e2a12aca | 1539 | const char *filename ATTRIBUTE_UNUSED; |
e2a12aca | 1540 | { |
e2a12aca NB |
1541 | /* COFF relative line numbers must be positive. */ |
1542 | if (line > sdb_begin_function_line) | |
1543 | { | |
1544 | #ifdef ASM_OUTPUT_SOURCE_LINE | |
1545 | ASM_OUTPUT_SOURCE_LINE (asm_out_file, line); | |
1546 | #else | |
1547 | fprintf (asm_out_file, "\t.ln\t%d\n", | |
1548 | ((sdb_begin_function_line > -1) | |
1549 | ? line - sdb_begin_function_line : 1)); | |
1550 | #endif | |
1551 | } | |
1552 | } | |
1553 | ||
37ba3390 RS |
1554 | /* Output sdb info for the current function name. |
1555 | Called from assemble_start_function. */ | |
1556 | ||
653e276c NB |
1557 | static void |
1558 | sdbout_begin_function (decl) | |
1559 | tree decl ATTRIBUTE_UNUSED; | |
37ba3390 RS |
1560 | { |
1561 | sdbout_symbol (current_function_decl, 0); | |
1562 | } | |
1563 | ||
653e276c NB |
1564 | /* Called at beginning of function body (before or after prologue, |
1565 | depending on MIPS_DEBUGGING_INFO). Record the function's starting | |
1566 | line number, so we can output relative line numbers for the other | |
1567 | lines. Describe beginning of outermost block. Also describe the | |
1568 | parameter list. */ | |
37ba3390 | 1569 | |
653e276c NB |
1570 | #ifndef MIPS_DEBUGGING_INFO |
1571 | static void | |
1572 | sdbout_begin_prologue (line, file) | |
1573 | unsigned int line; | |
1574 | const char *file ATTRIBUTE_UNUSED; | |
1575 | { | |
1576 | sdbout_end_prologue (line); | |
1577 | } | |
1578 | #endif | |
1579 | ||
1580 | static void | |
1581 | sdbout_end_prologue (line) | |
1582 | unsigned int line; | |
37ba3390 RS |
1583 | { |
1584 | sdb_begin_function_line = line - 1; | |
1585 | PUT_SDB_FUNCTION_START (line); | |
1586 | sdbout_parms (DECL_ARGUMENTS (current_function_decl)); | |
1587 | sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl)); | |
1588 | } | |
1589 | ||
1590 | /* Called at end of function (before epilogue). | |
1591 | Describe end of outermost block. */ | |
1592 | ||
e2a12aca | 1593 | static void |
37ba3390 | 1594 | sdbout_end_function (line) |
e2a12aca | 1595 | unsigned int line; |
37ba3390 RS |
1596 | { |
1597 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1598 | sdbout_dequeue_anonymous_types (); | |
1599 | #endif | |
1600 | ||
1601 | MAKE_LINE_SAFE (line); | |
1602 | PUT_SDB_FUNCTION_END (line - sdb_begin_function_line); | |
1603 | ||
1604 | /* Indicate we are between functions, for line-number output. */ | |
1605 | sdb_begin_function_line = -1; | |
1606 | } | |
1607 | ||
1608 | /* Output sdb info for the absolute end of a function. | |
1609 | Called after the epilogue is output. */ | |
1610 | ||
e2a12aca | 1611 | static void |
37ba3390 RS |
1612 | sdbout_end_epilogue () |
1613 | { | |
e2a12aca NB |
1614 | const char *name |
1615 | = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)); | |
1616 | ||
1617 | #ifdef PUT_SDB_EPILOGUE_END | |
1618 | PUT_SDB_EPILOGUE_END (name); | |
1619 | #else | |
1620 | fprintf (asm_out_file, "\t.def\t"); | |
1621 | assemble_name (asm_out_file, name); | |
1622 | fprintf (asm_out_file, "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", | |
1623 | SDB_DELIM, SDB_DELIM, SDB_DELIM); | |
1624 | #endif | |
37ba3390 RS |
1625 | } |
1626 | ||
1627 | /* Output sdb info for the given label. Called only if LABEL_NAME (insn) | |
1628 | is present. */ | |
1629 | ||
1630 | void | |
1631 | sdbout_label (insn) | |
1632 | register rtx insn; | |
1633 | { | |
1634 | PUT_SDB_DEF (LABEL_NAME (insn)); | |
1635 | PUT_SDB_VAL (insn); | |
1636 | PUT_SDB_SCL (C_LABEL); | |
1637 | PUT_SDB_TYPE (T_NULL); | |
1638 | PUT_SDB_ENDEF; | |
1639 | } | |
1640 | ||
cc694a81 DE |
1641 | /* Change to reading from a new source file. */ |
1642 | ||
7f905405 NB |
1643 | static void |
1644 | sdbout_start_source_file (line, filename) | |
1645 | unsigned int line ATTRIBUTE_UNUSED; | |
df07dc5b | 1646 | const char *filename ATTRIBUTE_UNUSED; |
cc694a81 DE |
1647 | { |
1648 | #ifdef MIPS_DEBUGGING_INFO | |
1649 | struct sdb_file *n = (struct sdb_file *) xmalloc (sizeof *n); | |
1650 | ||
1651 | n->next = current_file; | |
1652 | n->name = filename; | |
1653 | current_file = n; | |
1654 | PUT_SDB_SRC_FILE (filename); | |
1655 | #endif | |
1656 | } | |
1657 | ||
1658 | /* Revert to reading a previous source file. */ | |
1659 | ||
7f905405 NB |
1660 | static void |
1661 | sdbout_end_source_file (line) | |
1662 | unsigned int line ATTRIBUTE_UNUSED; | |
cc694a81 DE |
1663 | { |
1664 | #ifdef MIPS_DEBUGGING_INFO | |
1665 | struct sdb_file *next; | |
1666 | ||
1667 | next = current_file->next; | |
1668 | free (current_file); | |
1669 | current_file = next; | |
1670 | PUT_SDB_SRC_FILE (current_file->name); | |
1671 | #endif | |
1672 | } | |
1673 | ||
4eadbbd5 RK |
1674 | /* Set up for SDB output at the start of compilation. */ |
1675 | ||
a51d908e | 1676 | static void |
e2a12aca | 1677 | sdbout_init (input_file_name) |
4eadbbd5 | 1678 | const char *input_file_name ATTRIBUTE_UNUSED; |
4eadbbd5 RK |
1679 | { |
1680 | #ifdef MIPS_DEBUGGING_INFO | |
1681 | current_file = (struct sdb_file *) xmalloc (sizeof *current_file); | |
1682 | current_file->next = NULL; | |
1683 | current_file->name = input_file_name; | |
1684 | #endif | |
1685 | ||
1686 | #ifdef RMS_QUICK_HACK_1 | |
1687 | tree t; | |
a51d908e | 1688 | for (t = getdecls (); t; t = TREE_CHAIN (t)) |
4eadbbd5 RK |
1689 | if (DECL_NAME (t) && IDENTIFIER_POINTER (DECL_NAME (t)) != 0 |
1690 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (t)), "__vtbl_ptr_type")) | |
1691 | sdbout_symbol (t, 0); | |
1692 | #endif | |
1693 | ||
1694 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1695 | ggc_add_tree_root (&anonymous_types, 1); | |
1696 | #endif | |
1697 | } | |
1698 | ||
37ba3390 | 1699 | #endif /* SDB_DEBUGGING_INFO */ |