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37ba3390 | 1 | /* Output sdb-format symbol table information from GNU compiler. |
fa1610e9 | 2 | Copyright (C) 1988, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc. |
37ba3390 RS |
3 | |
4 | This file is part of GNU CC. | |
5 | ||
6 | GNU CC is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU CC is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU CC; see the file COPYING. If not, write to | |
e9fa0c7c RK |
18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
37ba3390 RS |
20 | |
21 | /* mike@tredysvr.Tredydev.Unisys.COM says: | |
22 | I modified the struct.c example and have a nm of a .o resulting from the | |
23 | AT&T C compiler. From the example below I would conclude the following: | |
24 | ||
25 | 1. All .defs from structures are emitted as scanned. The example below | |
26 | clearly shows the symbol table entries for BoxRec2 are after the first | |
27 | function. | |
28 | ||
29 | 2. All functions and their locals (including statics) are emitted as scanned. | |
30 | ||
31 | 3. All nested unnamed union and structure .defs must be emitted before | |
32 | the structure in which they are nested. The AT&T assembler is a | |
33 | one pass beast as far as symbolics are concerned. | |
34 | ||
35 | 4. All structure .defs are emitted before the typedefs that refer to them. | |
36 | ||
37 | 5. All top level static and external variable definitions are moved to the | |
6dc42e49 | 38 | end of file with all top level statics occurring first before externs. |
37ba3390 RS |
39 | |
40 | 6. All undefined references are at the end of the file. | |
41 | */ | |
42 | ||
43 | #include "config.h" | |
44 | ||
45 | #ifdef SDB_DEBUGGING_INFO | |
46 | ||
e9a25f70 | 47 | #include <stdio.h> |
37ba3390 RS |
48 | #include "tree.h" |
49 | #include "rtl.h" | |
37ba3390 | 50 | #include "regs.h" |
89c96a40 | 51 | #include "defaults.h" |
37ba3390 RS |
52 | #include "flags.h" |
53 | #include "insn-config.h" | |
54 | #include "reload.h" | |
55 | ||
64c6526a JW |
56 | /* Mips systems use the SDB functions to dump out symbols, but do not |
57 | supply usable syms.h include files. Which syms.h file to use is a | |
58 | target parameter so don't use the native one if we're cross compiling. */ | |
59 | ||
60 | #if defined(USG) && !defined(MIPS) && !defined (hpux) && !defined(_WIN32) && !defined(__linux__) && !defined(CROSS_COMPILE) | |
37ba3390 RS |
61 | #include <syms.h> |
62 | /* Use T_INT if we don't have T_VOID. */ | |
63 | #ifndef T_VOID | |
64 | #define T_VOID T_INT | |
65 | #endif | |
64c6526a | 66 | #else |
37ba3390 | 67 | #include "gsyms.h" |
64c6526a | 68 | #endif |
37ba3390 RS |
69 | |
70 | /* #include <storclass.h> used to be this instead of syms.h. */ | |
71 | ||
72 | /* 1 if PARM is passed to this function in memory. */ | |
73 | ||
74 | #define PARM_PASSED_IN_MEMORY(PARM) \ | |
75 | (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM) | |
76 | ||
77 | /* A C expression for the integer offset value of an automatic variable | |
78 | (C_AUTO) having address X (an RTX). */ | |
79 | #ifndef DEBUGGER_AUTO_OFFSET | |
80 | #define DEBUGGER_AUTO_OFFSET(X) \ | |
81 | (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) | |
82 | #endif | |
83 | ||
84 | /* A C expression for the integer offset value of an argument (C_ARG) | |
85 | having address X (an RTX). The nominal offset is OFFSET. */ | |
86 | #ifndef DEBUGGER_ARG_OFFSET | |
87 | #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET) | |
88 | #endif | |
89 | ||
90 | /* Line number of beginning of current function, minus one. | |
91 | Negative means not in a function or not using sdb. */ | |
92 | ||
93 | int sdb_begin_function_line = -1; | |
94 | ||
95 | /* Counter to generate unique "names" for nameless struct members. */ | |
96 | ||
97 | static int unnamed_struct_number = 0; | |
98 | ||
99 | extern FILE *asm_out_file; | |
100 | ||
101 | extern tree current_function_decl; | |
102 | ||
103 | void sdbout_init (); | |
104 | void sdbout_symbol (); | |
105 | void sdbout_types(); | |
106 | ||
21abd7a6 RK |
107 | static char *gen_fake_label PROTO((void)); |
108 | static int plain_type PROTO((tree)); | |
109 | static int template_name_p PROTO((tree)); | |
110 | static void sdbout_record_type_name PROTO((tree)); | |
111 | static int plain_type_1 PROTO((tree, int)); | |
112 | static void sdbout_block PROTO((tree)); | |
113 | static void sdbout_syms PROTO((tree)); | |
114 | static void sdbout_queue_anonymous_type PROTO((tree)); | |
115 | static void sdbout_dequeue_anonymous_types PROTO((void)); | |
116 | static void sdbout_type PROTO((tree)); | |
1d300e19 | 117 | static void sdbout_field_types PROTO((tree)); |
21abd7a6 RK |
118 | static void sdbout_one_type PROTO((tree)); |
119 | static void sdbout_parms PROTO((tree)); | |
120 | static void sdbout_reg_parms PROTO((tree)); | |
37ba3390 RS |
121 | \f |
122 | /* Define the default sizes for various types. */ | |
123 | ||
124 | #ifndef CHAR_TYPE_SIZE | |
125 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
126 | #endif | |
127 | ||
128 | #ifndef SHORT_TYPE_SIZE | |
129 | #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2)) | |
130 | #endif | |
131 | ||
132 | #ifndef INT_TYPE_SIZE | |
133 | #define INT_TYPE_SIZE BITS_PER_WORD | |
134 | #endif | |
135 | ||
136 | #ifndef LONG_TYPE_SIZE | |
137 | #define LONG_TYPE_SIZE BITS_PER_WORD | |
138 | #endif | |
139 | ||
140 | #ifndef LONG_LONG_TYPE_SIZE | |
141 | #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2) | |
142 | #endif | |
143 | ||
144 | #ifndef FLOAT_TYPE_SIZE | |
145 | #define FLOAT_TYPE_SIZE BITS_PER_WORD | |
146 | #endif | |
147 | ||
148 | #ifndef DOUBLE_TYPE_SIZE | |
149 | #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) | |
150 | #endif | |
151 | ||
152 | #ifndef LONG_DOUBLE_TYPE_SIZE | |
153 | #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) | |
154 | #endif | |
155 | \f | |
156 | /* Random macros describing parts of SDB data. */ | |
157 | ||
158 | /* Put something here if lines get too long */ | |
159 | #define CONTIN | |
160 | ||
161 | /* Default value of delimiter is ";". */ | |
162 | #ifndef SDB_DELIM | |
163 | #define SDB_DELIM ";" | |
164 | #endif | |
165 | ||
166 | /* Maximum number of dimensions the assembler will allow. */ | |
167 | #ifndef SDB_MAX_DIM | |
168 | #define SDB_MAX_DIM 4 | |
169 | #endif | |
170 | ||
171 | #ifndef PUT_SDB_SCL | |
172 | #define PUT_SDB_SCL(a) fprintf(asm_out_file, "\t.scl\t%d%s", (a), SDB_DELIM) | |
173 | #endif | |
174 | ||
175 | #ifndef PUT_SDB_INT_VAL | |
176 | #define PUT_SDB_INT_VAL(a) fprintf (asm_out_file, "\t.val\t%d%s", (a), SDB_DELIM) | |
177 | #endif | |
178 | ||
179 | #ifndef PUT_SDB_VAL | |
180 | #define PUT_SDB_VAL(a) \ | |
181 | ( fputs ("\t.val\t", asm_out_file), \ | |
182 | output_addr_const (asm_out_file, (a)), \ | |
183 | fprintf (asm_out_file, SDB_DELIM)) | |
184 | #endif | |
185 | ||
186 | #ifndef PUT_SDB_DEF | |
187 | #define PUT_SDB_DEF(a) \ | |
188 | do { fprintf (asm_out_file, "\t.def\t"); \ | |
189 | ASM_OUTPUT_LABELREF (asm_out_file, a); \ | |
190 | fprintf (asm_out_file, SDB_DELIM); } while (0) | |
191 | #endif | |
192 | ||
193 | #ifndef PUT_SDB_PLAIN_DEF | |
194 | #define PUT_SDB_PLAIN_DEF(a) fprintf(asm_out_file,"\t.def\t.%s%s",a, SDB_DELIM) | |
195 | #endif | |
196 | ||
197 | #ifndef PUT_SDB_ENDEF | |
198 | #define PUT_SDB_ENDEF fputs("\t.endef\n", asm_out_file) | |
199 | #endif | |
200 | ||
201 | #ifndef PUT_SDB_TYPE | |
202 | #define PUT_SDB_TYPE(a) fprintf(asm_out_file, "\t.type\t0%o%s", a, SDB_DELIM) | |
203 | #endif | |
204 | ||
205 | #ifndef PUT_SDB_SIZE | |
206 | #define PUT_SDB_SIZE(a) fprintf(asm_out_file, "\t.size\t%d%s", a, SDB_DELIM) | |
207 | #endif | |
208 | ||
209 | #ifndef PUT_SDB_START_DIM | |
210 | #define PUT_SDB_START_DIM fprintf(asm_out_file, "\t.dim\t") | |
211 | #endif | |
212 | ||
213 | #ifndef PUT_SDB_NEXT_DIM | |
214 | #define PUT_SDB_NEXT_DIM(a) fprintf(asm_out_file, "%d,", a) | |
215 | #endif | |
216 | ||
217 | #ifndef PUT_SDB_LAST_DIM | |
218 | #define PUT_SDB_LAST_DIM(a) fprintf(asm_out_file, "%d%s", a, SDB_DELIM) | |
219 | #endif | |
220 | ||
221 | #ifndef PUT_SDB_TAG | |
222 | #define PUT_SDB_TAG(a) \ | |
223 | do { fprintf (asm_out_file, "\t.tag\t"); \ | |
224 | ASM_OUTPUT_LABELREF (asm_out_file, a); \ | |
225 | fprintf (asm_out_file, SDB_DELIM); } while (0) | |
226 | #endif | |
227 | ||
228 | #ifndef PUT_SDB_BLOCK_START | |
229 | #define PUT_SDB_BLOCK_START(LINE) \ | |
230 | fprintf (asm_out_file, \ | |
231 | "\t.def\t.bb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \ | |
232 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
233 | #endif | |
234 | ||
235 | #ifndef PUT_SDB_BLOCK_END | |
236 | #define PUT_SDB_BLOCK_END(LINE) \ | |
237 | fprintf (asm_out_file, \ | |
238 | "\t.def\t.eb%s\t.val\t.%s\t.scl\t100%s\t.line\t%d%s\t.endef\n", \ | |
239 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
240 | #endif | |
241 | ||
242 | #ifndef PUT_SDB_FUNCTION_START | |
243 | #define PUT_SDB_FUNCTION_START(LINE) \ | |
244 | fprintf (asm_out_file, \ | |
245 | "\t.def\t.bf%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \ | |
246 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
247 | #endif | |
248 | ||
249 | #ifndef PUT_SDB_FUNCTION_END | |
250 | #define PUT_SDB_FUNCTION_END(LINE) \ | |
251 | fprintf (asm_out_file, \ | |
252 | "\t.def\t.ef%s\t.val\t.%s\t.scl\t101%s\t.line\t%d%s\t.endef\n", \ | |
253 | SDB_DELIM, SDB_DELIM, SDB_DELIM, (LINE), SDB_DELIM) | |
254 | #endif | |
255 | ||
256 | #ifndef PUT_SDB_EPILOGUE_END | |
257 | #define PUT_SDB_EPILOGUE_END(NAME) \ | |
258 | do { fprintf (asm_out_file, "\t.def\t"); \ | |
259 | ASM_OUTPUT_LABELREF (asm_out_file, NAME); \ | |
260 | fprintf (asm_out_file, \ | |
261 | "%s\t.val\t.%s\t.scl\t-1%s\t.endef\n", \ | |
262 | SDB_DELIM, SDB_DELIM, SDB_DELIM); } while (0) | |
263 | #endif | |
264 | ||
265 | #ifndef SDB_GENERATE_FAKE | |
266 | #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \ | |
267 | sprintf ((BUFFER), ".%dfake", (NUMBER)); | |
268 | #endif | |
269 | ||
270 | /* Return the sdb tag identifier string for TYPE | |
271 | if TYPE has already been defined; otherwise return a null pointer. */ | |
272 | ||
6fb2e346 | 273 | #define KNOWN_TYPE_TAG(type) TYPE_SYMTAB_POINTER (type) |
37ba3390 RS |
274 | |
275 | /* Set the sdb tag identifier string for TYPE to NAME. */ | |
276 | ||
277 | #define SET_KNOWN_TYPE_TAG(TYPE, NAME) \ | |
6fb2e346 | 278 | TYPE_SYMTAB_POINTER (TYPE) = (NAME) |
37ba3390 RS |
279 | |
280 | /* Return the name (a string) of the struct, union or enum tag | |
281 | described by the TREE_LIST node LINK. This is 0 for an anonymous one. */ | |
282 | ||
283 | #define TAG_NAME(link) \ | |
284 | (((link) && TREE_PURPOSE ((link)) \ | |
285 | && IDENTIFIER_POINTER (TREE_PURPOSE ((link)))) \ | |
286 | ? IDENTIFIER_POINTER (TREE_PURPOSE ((link))) : (char *) 0) | |
287 | ||
288 | /* Ensure we don't output a negative line number. */ | |
289 | #define MAKE_LINE_SAFE(line) \ | |
290 | if (line <= sdb_begin_function_line) line = sdb_begin_function_line + 1 | |
cc694a81 DE |
291 | |
292 | /* Perform linker optimization of merging header file definitions together | |
293 | for targets with MIPS_DEBUGGING_INFO defined. This won't work without a | |
294 | post 960826 version of GAS. Nothing breaks with earlier versions of GAS, | |
295 | the optimization just won't be done. The native assembler already has the | |
296 | necessary support. */ | |
297 | ||
298 | #ifdef MIPS_DEBUGGING_INFO | |
299 | ||
300 | #ifndef PUT_SDB_SRC_FILE | |
301 | #define PUT_SDB_SRC_FILE(FILENAME) \ | |
302 | output_file_directive (asm_out_file, (FILENAME)) | |
303 | #endif | |
304 | ||
305 | /* ECOFF linkers have an optimization that does the same kind of thing as | |
306 | N_BINCL/E_INCL in stabs: eliminate duplicate debug information in the | |
307 | executable. To achieve this, GCC must output a .file for each file | |
308 | name change. */ | |
309 | ||
310 | /* This is a stack of input files. */ | |
311 | ||
312 | struct sdb_file | |
313 | { | |
314 | struct sdb_file *next; | |
315 | char *name; | |
316 | }; | |
317 | ||
318 | /* This is the top of the stack. */ | |
319 | ||
320 | static struct sdb_file *current_file; | |
321 | ||
322 | #endif /* MIPS_DEBUGGING_INFO */ | |
37ba3390 RS |
323 | \f |
324 | /* Set up for SDB output at the start of compilation. */ | |
325 | ||
326 | void | |
327 | sdbout_init (asm_file, input_file_name, syms) | |
328 | FILE *asm_file; | |
329 | char *input_file_name; | |
330 | tree syms; | |
331 | { | |
cc694a81 DE |
332 | #ifdef MIPS_DEBUGGING_INFO |
333 | current_file = (struct sdb_file *) xmalloc (sizeof *current_file); | |
334 | current_file->next = NULL; | |
335 | current_file->name = input_file_name; | |
336 | #endif | |
337 | ||
18205693 RS |
338 | #ifdef RMS_QUICK_HACK_1 |
339 | tree t; | |
340 | for (t = syms; t; t = TREE_CHAIN (t)) | |
341 | if (DECL_NAME (t) && IDENTIFIER_POINTER (DECL_NAME (t)) != 0 | |
342 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (t)), "__vtbl_ptr_type")) | |
343 | sdbout_symbol (t, 0); | |
344 | #endif | |
37ba3390 RS |
345 | } |
346 | ||
347 | #if 0 | |
348 | ||
349 | /* return the tag identifier for type | |
350 | */ | |
351 | ||
352 | char * | |
353 | tag_of_ru_type (type,link) | |
354 | tree type,link; | |
355 | { | |
356 | if (TYPE_SYMTAB_ADDRESS (type)) | |
6fb2e346 | 357 | return TYPE_SYMTAB_ADDRESS (type); |
37ba3390 RS |
358 | if (link && TREE_PURPOSE (link) |
359 | && IDENTIFIER_POINTER (TREE_PURPOSE (link))) | |
6fb2e346 | 360 | TYPE_SYMTAB_ADDRESS (type) = IDENTIFIER_POINTER (TREE_PURPOSE (link)); |
37ba3390 RS |
361 | else |
362 | return (char *) TYPE_SYMTAB_ADDRESS (type); | |
363 | } | |
364 | #endif | |
365 | ||
366 | /* Return a unique string to name an anonymous type. */ | |
367 | ||
368 | static char * | |
369 | gen_fake_label () | |
370 | { | |
371 | char label[10]; | |
372 | char *labelstr; | |
373 | SDB_GENERATE_FAKE (label, unnamed_struct_number); | |
374 | unnamed_struct_number++; | |
375 | labelstr = (char *) permalloc (strlen (label) + 1); | |
376 | strcpy (labelstr, label); | |
377 | return labelstr; | |
378 | } | |
379 | \f | |
380 | /* Return the number which describes TYPE for SDB. | |
381 | For pointers, etc., this function is recursive. | |
382 | Each record, union or enumeral type must already have had a | |
383 | tag number output. */ | |
384 | ||
385 | /* The number is given by d6d5d4d3d2d1bbbb | |
386 | where bbbb is 4 bit basic type, and di indicate one of notype,ptr,fn,array. | |
387 | Thus, char *foo () has bbbb=T_CHAR | |
388 | d1=D_FCN | |
389 | d2=D_PTR | |
390 | N_BTMASK= 017 1111 basic type field. | |
391 | N_TSHIFT= 2 derived type shift | |
392 | N_BTSHFT= 4 Basic type shift */ | |
393 | ||
394 | /* Produce the number that describes a pointer, function or array type. | |
395 | PREV is the number describing the target, value or element type. | |
396 | DT_type describes how to transform that type. */ | |
aa7a5913 RS |
397 | #define PUSH_DERIVED_LEVEL(DT_type,PREV) \ |
398 | ((((PREV) & ~(int)N_BTMASK) << (int)N_TSHIFT) \ | |
399 | | ((int)DT_type << (int)N_BTSHFT) \ | |
400 | | ((PREV) & (int)N_BTMASK)) | |
37ba3390 RS |
401 | |
402 | /* Number of elements used in sdb_dims. */ | |
403 | static int sdb_n_dims = 0; | |
404 | ||
405 | /* Table of array dimensions of current type. */ | |
406 | static int sdb_dims[SDB_MAX_DIM]; | |
407 | ||
408 | /* Size of outermost array currently being processed. */ | |
409 | static int sdb_type_size = -1; | |
410 | ||
411 | static int | |
412 | plain_type (type) | |
413 | tree type; | |
414 | { | |
1a625283 | 415 | int val = plain_type_1 (type, 0); |
37ba3390 RS |
416 | |
417 | /* If we have already saved up some array dimensions, print them now. */ | |
418 | if (sdb_n_dims > 0) | |
419 | { | |
420 | int i; | |
421 | PUT_SDB_START_DIM; | |
422 | for (i = sdb_n_dims - 1; i > 0; i--) | |
423 | PUT_SDB_NEXT_DIM (sdb_dims[i]); | |
424 | PUT_SDB_LAST_DIM (sdb_dims[0]); | |
425 | sdb_n_dims = 0; | |
426 | ||
427 | sdb_type_size = int_size_in_bytes (type); | |
428 | /* Don't kill sdb if type is not laid out or has variable size. */ | |
429 | if (sdb_type_size < 0) | |
430 | sdb_type_size = 0; | |
431 | } | |
432 | /* If we have computed the size of an array containing this type, | |
433 | print it now. */ | |
434 | if (sdb_type_size >= 0) | |
435 | { | |
436 | PUT_SDB_SIZE (sdb_type_size); | |
437 | sdb_type_size = -1; | |
438 | } | |
439 | return val; | |
440 | } | |
441 | ||
4be2397b RS |
442 | static int |
443 | template_name_p (name) | |
444 | tree name; | |
445 | { | |
446 | register char *ptr = IDENTIFIER_POINTER (name); | |
447 | while (*ptr && *ptr != '<') | |
448 | ptr++; | |
449 | ||
450 | return *ptr != '\0'; | |
451 | } | |
452 | ||
37ba3390 RS |
453 | static void |
454 | sdbout_record_type_name (type) | |
455 | tree type; | |
456 | { | |
457 | char *name = 0; | |
458 | int no_name; | |
459 | ||
460 | if (KNOWN_TYPE_TAG (type)) | |
461 | return; | |
462 | ||
463 | if (TYPE_NAME (type) != 0) | |
464 | { | |
465 | tree t = 0; | |
466 | /* Find the IDENTIFIER_NODE for the type name. */ | |
467 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
95b2ff8b | 468 | t = TYPE_NAME (type); |
12357e42 | 469 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) |
37ba3390 RS |
470 | { |
471 | t = DECL_NAME (TYPE_NAME (type)); | |
4be2397b RS |
472 | /* The DECL_NAME for templates includes "<>", which breaks |
473 | most assemblers. Use its assembler name instead, which | |
474 | has been mangled into being safe. */ | |
475 | if (t && template_name_p (t)) | |
476 | t = DECL_ASSEMBLER_NAME (TYPE_NAME (type)); | |
37ba3390 | 477 | } |
37ba3390 RS |
478 | |
479 | /* Now get the name as a string, or invent one. */ | |
4be2397b | 480 | if (t != NULL_TREE) |
37ba3390 RS |
481 | name = IDENTIFIER_POINTER (t); |
482 | } | |
483 | ||
484 | no_name = (name == 0 || *name == 0); | |
485 | if (no_name) | |
486 | name = gen_fake_label (); | |
487 | ||
488 | SET_KNOWN_TYPE_TAG (type, name); | |
489 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
490 | if (no_name) | |
491 | sdbout_queue_anonymous_type (type); | |
492 | #endif | |
493 | } | |
494 | ||
1a625283 JW |
495 | /* Return the .type value for type TYPE. |
496 | ||
497 | LEVEL indicates how many levels deep we have recursed into the type. | |
498 | The SDB debug format can only represent 6 derived levels of types. | |
499 | After that, we must output inaccurate debug info. We deliberately | |
500 | stop before the 7th level, so that ADA recursive types will not give an | |
501 | infinite loop. */ | |
502 | ||
37ba3390 | 503 | static int |
1a625283 | 504 | plain_type_1 (type, level) |
37ba3390 | 505 | tree type; |
1a625283 | 506 | int level; |
37ba3390 RS |
507 | { |
508 | if (type == 0) | |
509 | type = void_type_node; | |
1a625283 | 510 | else if (type == error_mark_node) |
37ba3390 | 511 | type = integer_type_node; |
1a625283 JW |
512 | else |
513 | type = TYPE_MAIN_VARIANT (type); | |
37ba3390 RS |
514 | |
515 | switch (TREE_CODE (type)) | |
516 | { | |
517 | case VOID_TYPE: | |
518 | return T_VOID; | |
519 | case INTEGER_TYPE: | |
520 | { | |
521 | int size = int_size_in_bytes (type) * BITS_PER_UNIT; | |
aed0ae9b JW |
522 | |
523 | /* Carefully distinguish all the standard types of C, | |
524 | without messing up if the language is not C. | |
525 | Note that we check only for the names that contain spaces; | |
526 | other names might occur by coincidence in other languages. */ | |
527 | if (TYPE_NAME (type) != 0 | |
528 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
529 | && DECL_NAME (TYPE_NAME (type)) != 0 | |
530 | && TREE_CODE (DECL_NAME (TYPE_NAME (type))) == IDENTIFIER_NODE) | |
531 | { | |
532 | char *name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))); | |
533 | ||
c85f7c16 JL |
534 | if (!strcmp (name, "char")) |
535 | return T_CHAR; | |
aed0ae9b JW |
536 | if (!strcmp (name, "unsigned char")) |
537 | return T_UCHAR; | |
538 | if (!strcmp (name, "signed char")) | |
539 | return T_CHAR; | |
c85f7c16 JL |
540 | if (!strcmp (name, "int")) |
541 | return T_INT; | |
aed0ae9b JW |
542 | if (!strcmp (name, "unsigned int")) |
543 | return T_UINT; | |
544 | if (!strcmp (name, "short int")) | |
545 | return T_SHORT; | |
546 | if (!strcmp (name, "short unsigned int")) | |
547 | return T_USHORT; | |
548 | if (!strcmp (name, "long int")) | |
549 | return T_LONG; | |
550 | if (!strcmp (name, "long unsigned int")) | |
551 | return T_ULONG; | |
552 | } | |
553 | ||
c85f7c16 JL |
554 | if (size == INT_TYPE_SIZE) |
555 | return (TREE_UNSIGNED (type) ? T_UINT : T_INT); | |
37ba3390 RS |
556 | if (size == CHAR_TYPE_SIZE) |
557 | return (TREE_UNSIGNED (type) ? T_UCHAR : T_CHAR); | |
558 | if (size == SHORT_TYPE_SIZE) | |
559 | return (TREE_UNSIGNED (type) ? T_USHORT : T_SHORT); | |
580b8ee2 RS |
560 | if (size == LONG_TYPE_SIZE) |
561 | return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG); | |
7726fc45 RK |
562 | if (size == LONG_LONG_TYPE_SIZE) /* better than nothing */ |
563 | return (TREE_UNSIGNED (type) ? T_ULONG : T_LONG); | |
37ba3390 RS |
564 | return 0; |
565 | } | |
566 | ||
567 | case REAL_TYPE: | |
568 | { | |
64c6526a JW |
569 | int precision = TYPE_PRECISION (type); |
570 | if (precision == FLOAT_TYPE_SIZE) | |
37ba3390 | 571 | return T_FLOAT; |
64c6526a | 572 | if (precision == DOUBLE_TYPE_SIZE) |
37ba3390 | 573 | return T_DOUBLE; |
64c6526a JW |
574 | #ifdef EXTENDED_SDB_BASIC_TYPES |
575 | if (precision == LONG_DOUBLE_TYPE_SIZE) | |
576 | return T_LNGDBL; | |
577 | #endif | |
37ba3390 RS |
578 | return 0; |
579 | } | |
580 | ||
581 | case ARRAY_TYPE: | |
582 | { | |
583 | int m; | |
1a625283 JW |
584 | if (level >= 6) |
585 | return T_VOID; | |
586 | else | |
587 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
37ba3390 RS |
588 | if (sdb_n_dims < SDB_MAX_DIM) |
589 | sdb_dims[sdb_n_dims++] | |
590 | = (TYPE_DOMAIN (type) | |
e1ee5cdc | 591 | && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) |
04940ba5 JW |
592 | && TREE_CODE (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) == INTEGER_CST |
593 | && TREE_CODE (TYPE_MIN_VALUE (TYPE_DOMAIN (type))) == INTEGER_CST | |
973d79ed RK |
594 | ? (TREE_INT_CST_LOW (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) |
595 | - TREE_INT_CST_LOW (TYPE_MIN_VALUE (TYPE_DOMAIN (type))) + 1) | |
37ba3390 RS |
596 | : 0); |
597 | return PUSH_DERIVED_LEVEL (DT_ARY, m); | |
598 | } | |
599 | ||
600 | case RECORD_TYPE: | |
601 | case UNION_TYPE: | |
c1b98a95 | 602 | case QUAL_UNION_TYPE: |
37ba3390 RS |
603 | case ENUMERAL_TYPE: |
604 | { | |
605 | char *tag; | |
606 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
607 | sdbout_record_type_name (type); | |
608 | #endif | |
609 | #ifndef SDB_ALLOW_UNKNOWN_REFERENCES | |
610 | if ((TREE_ASM_WRITTEN (type) && KNOWN_TYPE_TAG (type) != 0) | |
611 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
612 | || TYPE_MODE (type) != VOIDmode | |
613 | #endif | |
614 | ) | |
615 | #endif | |
616 | { | |
617 | /* Output the referenced structure tag name | |
618 | only if the .def has already been finished. | |
619 | At least on 386, the Unix assembler | |
620 | cannot handle forward references to tags. */ | |
0f41302f MS |
621 | /* But the 88100, it requires them, sigh... */ |
622 | /* And the MIPS requires unknown refs as well... */ | |
37ba3390 RS |
623 | tag = KNOWN_TYPE_TAG (type); |
624 | PUT_SDB_TAG (tag); | |
625 | /* These 3 lines used to follow the close brace. | |
626 | However, a size of 0 without a tag implies a tag of 0, | |
627 | so if we don't know a tag, we can't mention the size. */ | |
628 | sdb_type_size = int_size_in_bytes (type); | |
629 | if (sdb_type_size < 0) | |
630 | sdb_type_size = 0; | |
631 | } | |
632 | return ((TREE_CODE (type) == RECORD_TYPE) ? T_STRUCT | |
633 | : (TREE_CODE (type) == UNION_TYPE) ? T_UNION | |
c1b98a95 | 634 | : (TREE_CODE (type) == QUAL_UNION_TYPE) ? T_UNION |
37ba3390 RS |
635 | : T_ENUM); |
636 | } | |
637 | case POINTER_TYPE: | |
638 | case REFERENCE_TYPE: | |
639 | { | |
1a625283 JW |
640 | int m; |
641 | if (level >= 6) | |
642 | return T_VOID; | |
643 | else | |
644 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
37ba3390 RS |
645 | return PUSH_DERIVED_LEVEL (DT_PTR, m); |
646 | } | |
647 | case FUNCTION_TYPE: | |
648 | case METHOD_TYPE: | |
649 | { | |
1a625283 JW |
650 | int m; |
651 | if (level >= 6) | |
652 | return T_VOID; | |
653 | else | |
654 | m = plain_type_1 (TREE_TYPE (type), level+1); | |
37ba3390 RS |
655 | return PUSH_DERIVED_LEVEL (DT_FCN, m); |
656 | } | |
657 | default: | |
658 | return 0; | |
659 | } | |
660 | } | |
661 | \f | |
662 | /* Output the symbols defined in block number DO_BLOCK. | |
663 | Set NEXT_BLOCK_NUMBER to 0 before calling. | |
664 | ||
665 | This function works by walking the tree structure of blocks, | |
666 | counting blocks until it finds the desired block. */ | |
667 | ||
668 | static int do_block = 0; | |
669 | ||
670 | static int next_block_number; | |
671 | ||
672 | static void | |
673 | sdbout_block (block) | |
674 | register tree block; | |
675 | { | |
676 | while (block) | |
677 | { | |
678 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
679 | if (TREE_USED (block)) | |
680 | { | |
681 | /* When we reach the specified block, output its symbols. */ | |
682 | if (next_block_number == do_block) | |
683 | { | |
684 | sdbout_syms (BLOCK_VARS (block)); | |
685 | } | |
686 | ||
687 | /* If we are past the specified block, stop the scan. */ | |
688 | if (next_block_number > do_block) | |
689 | return; | |
690 | ||
691 | next_block_number++; | |
692 | ||
693 | /* Scan the blocks within this block. */ | |
694 | sdbout_block (BLOCK_SUBBLOCKS (block)); | |
695 | } | |
696 | ||
697 | block = BLOCK_CHAIN (block); | |
698 | } | |
699 | } | |
700 | \f | |
701 | /* Call sdbout_symbol on each decl in the chain SYMS. */ | |
702 | ||
703 | static void | |
704 | sdbout_syms (syms) | |
705 | tree syms; | |
706 | { | |
707 | while (syms) | |
708 | { | |
5b7f1820 RS |
709 | if (TREE_CODE (syms) != LABEL_DECL) |
710 | sdbout_symbol (syms, 1); | |
37ba3390 RS |
711 | syms = TREE_CHAIN (syms); |
712 | } | |
713 | } | |
714 | ||
715 | /* Output SDB information for a symbol described by DECL. | |
716 | LOCAL is nonzero if the symbol is not file-scope. */ | |
717 | ||
718 | void | |
719 | sdbout_symbol (decl, local) | |
720 | tree decl; | |
721 | int local; | |
722 | { | |
37ba3390 RS |
723 | tree type = TREE_TYPE (decl); |
724 | tree context = NULL_TREE; | |
725 | rtx value; | |
726 | int regno = -1; | |
727 | char *name; | |
728 | ||
16d90796 RS |
729 | sdbout_one_type (type); |
730 | ||
731 | #if 0 /* This loses when functions are marked to be ignored, | |
732 | which happens in the C++ front end. */ | |
5e32e83b RS |
733 | if (DECL_IGNORED_P (decl)) |
734 | return; | |
16d90796 | 735 | #endif |
37ba3390 RS |
736 | |
737 | switch (TREE_CODE (decl)) | |
738 | { | |
739 | case CONST_DECL: | |
740 | /* Enum values are defined by defining the enum type. */ | |
741 | return; | |
742 | ||
743 | case FUNCTION_DECL: | |
744 | /* Don't mention a nested function under its parent. */ | |
745 | context = decl_function_context (decl); | |
746 | if (context == current_function_decl) | |
747 | return; | |
b01a1fdb JW |
748 | /* Check DECL_INITIAL to distinguish declarations from definitions. |
749 | Don't output debug info here for declarations; they will have | |
750 | a DECL_INITIAL value of 0. */ | |
751 | if (! DECL_INITIAL (decl)) | |
37ba3390 RS |
752 | return; |
753 | if (GET_CODE (DECL_RTL (decl)) != MEM | |
754 | || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF) | |
755 | return; | |
756 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
757 | PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
758 | PUT_SDB_SCL (TREE_PUBLIC (decl) ? C_EXT : C_STAT); | |
759 | break; | |
760 | ||
761 | case TYPE_DECL: | |
762 | /* Done with tagged types. */ | |
763 | if (DECL_NAME (decl) == 0) | |
764 | return; | |
16d90796 RS |
765 | if (DECL_IGNORED_P (decl)) |
766 | return; | |
37ba3390 RS |
767 | |
768 | /* Output typedef name. */ | |
4be2397b RS |
769 | if (template_name_p (DECL_NAME (decl))) |
770 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
771 | else | |
772 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_NAME (decl))); | |
37ba3390 RS |
773 | PUT_SDB_SCL (C_TPDEF); |
774 | break; | |
775 | ||
776 | case PARM_DECL: | |
777 | /* Parm decls go in their own separate chains | |
778 | and are output by sdbout_reg_parms and sdbout_parms. */ | |
779 | abort (); | |
780 | ||
781 | case VAR_DECL: | |
782 | /* Don't mention a variable that is external. | |
783 | Let the file that defines it describe it. */ | |
216d5cdd | 784 | if (DECL_EXTERNAL (decl)) |
37ba3390 RS |
785 | return; |
786 | ||
16d90796 RS |
787 | /* Ignore __FUNCTION__, etc. */ |
788 | if (DECL_IGNORED_P (decl)) | |
789 | return; | |
790 | ||
37ba3390 RS |
791 | /* If there was an error in the declaration, don't dump core |
792 | if there is no RTL associated with the variable doesn't | |
793 | exist. */ | |
794 | if (DECL_RTL (decl) == 0) | |
795 | return; | |
796 | ||
1914f5da | 797 | DECL_RTL (decl) = eliminate_regs (DECL_RTL (decl), 0, NULL_RTX); |
bf1e8c4d RS |
798 | #ifdef LEAF_REG_REMAP |
799 | if (leaf_function) | |
800 | leaf_renumber_regs_insn (DECL_RTL (decl)); | |
801 | #endif | |
802 | value = DECL_RTL (decl); | |
37ba3390 RS |
803 | |
804 | /* Don't mention a variable at all | |
805 | if it was completely optimized into nothingness. | |
806 | ||
807 | If DECL was from an inline function, then its rtl | |
808 | is not identically the rtl that was used in this | |
809 | particular compilation. */ | |
810 | if (GET_CODE (value) == REG) | |
811 | { | |
812 | regno = REGNO (DECL_RTL (decl)); | |
813 | if (regno >= FIRST_PSEUDO_REGISTER) | |
37ba3390 RS |
814 | return; |
815 | } | |
bf1e8c4d | 816 | else if (GET_CODE (value) == SUBREG) |
37ba3390 RS |
817 | { |
818 | int offset = 0; | |
819 | while (GET_CODE (value) == SUBREG) | |
820 | { | |
821 | offset += SUBREG_WORD (value); | |
822 | value = SUBREG_REG (value); | |
823 | } | |
824 | if (GET_CODE (value) == REG) | |
825 | { | |
826 | regno = REGNO (value); | |
827 | if (regno >= FIRST_PSEUDO_REGISTER) | |
bf1e8c4d RS |
828 | return; |
829 | regno += offset; | |
37ba3390 | 830 | } |
bf1e8c4d RS |
831 | alter_subreg (DECL_RTL (decl)); |
832 | value = DECL_RTL (decl); | |
37ba3390 | 833 | } |
39eae9f4 RS |
834 | /* Don't output anything if an auto variable |
835 | gets RTL that is static. | |
836 | GAS version 2.2 can't handle such output. */ | |
837 | else if (GET_CODE (value) == MEM && CONSTANT_P (XEXP (value, 0)) | |
838 | && ! TREE_STATIC (decl)) | |
839 | return; | |
37ba3390 RS |
840 | |
841 | /* Emit any structure, union, or enum type that has not been output. | |
842 | This occurs for tag-less structs (et al) used to declare variables | |
843 | within functions. */ | |
844 | if (TREE_CODE (type) == ENUMERAL_TYPE | |
845 | || TREE_CODE (type) == RECORD_TYPE | |
c1b98a95 RK |
846 | || TREE_CODE (type) == UNION_TYPE |
847 | || TREE_CODE (type) == QUAL_UNION_TYPE) | |
37ba3390 RS |
848 | { |
849 | if (TYPE_SIZE (type) != 0 /* not a forward reference */ | |
850 | && KNOWN_TYPE_TAG (type) == 0) /* not yet declared */ | |
851 | sdbout_one_type (type); | |
852 | } | |
853 | ||
854 | /* Defer SDB information for top-level initialized variables! */ | |
855 | if (! local | |
856 | && GET_CODE (value) == MEM | |
857 | && DECL_INITIAL (decl)) | |
858 | return; | |
859 | ||
ed5f8355 RS |
860 | /* C++ in 2.3 makes nameless symbols. That will be fixed later. |
861 | For now, avoid crashing. */ | |
862 | if (DECL_NAME (decl) == NULL_TREE) | |
863 | return; | |
864 | ||
37ba3390 | 865 | /* Record the name for, starting a symtab entry. */ |
95b2ff8b | 866 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); |
37ba3390 RS |
867 | |
868 | if (GET_CODE (value) == MEM | |
869 | && GET_CODE (XEXP (value, 0)) == SYMBOL_REF) | |
870 | { | |
871 | PUT_SDB_DEF (name); | |
872 | if (TREE_PUBLIC (decl)) | |
873 | { | |
874 | PUT_SDB_VAL (XEXP (value, 0)); | |
875 | PUT_SDB_SCL (C_EXT); | |
876 | } | |
877 | else | |
878 | { | |
879 | PUT_SDB_VAL (XEXP (value, 0)); | |
880 | PUT_SDB_SCL (C_STAT); | |
881 | } | |
882 | } | |
883 | else if (regno >= 0) | |
884 | { | |
885 | PUT_SDB_DEF (name); | |
886 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (regno)); | |
887 | PUT_SDB_SCL (C_REG); | |
888 | } | |
889 | else if (GET_CODE (value) == MEM | |
890 | && (GET_CODE (XEXP (value, 0)) == MEM | |
891 | || (GET_CODE (XEXP (value, 0)) == REG | |
d8a0edf4 | 892 | && REGNO (XEXP (value, 0)) != HARD_FRAME_POINTER_REGNUM |
5b7f1820 | 893 | && REGNO (XEXP (value, 0)) != STACK_POINTER_REGNUM))) |
37ba3390 RS |
894 | /* If the value is indirect by memory or by a register |
895 | that isn't the frame pointer | |
896 | then it means the object is variable-sized and address through | |
897 | that register or stack slot. COFF has no way to represent this | |
898 | so all we can do is output the variable as a pointer. */ | |
899 | { | |
900 | PUT_SDB_DEF (name); | |
901 | if (GET_CODE (XEXP (value, 0)) == REG) | |
902 | { | |
903 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (XEXP (value, 0)))); | |
904 | PUT_SDB_SCL (C_REG); | |
905 | } | |
906 | else | |
907 | { | |
908 | /* DECL_RTL looks like (MEM (MEM (PLUS (REG...) | |
909 | (CONST_INT...)))). | |
910 | We want the value of that CONST_INT. */ | |
911 | /* Encore compiler hates a newline in a macro arg, it seems. */ | |
912 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
913 | (XEXP (XEXP (value, 0), 0))); | |
914 | PUT_SDB_SCL (C_AUTO); | |
915 | } | |
916 | ||
917 | type = build_pointer_type (TREE_TYPE (decl)); | |
918 | } | |
919 | else if (GET_CODE (value) == MEM | |
6d55e0ab JW |
920 | && ((GET_CODE (XEXP (value, 0)) == PLUS |
921 | && GET_CODE (XEXP (XEXP (value, 0), 0)) == REG | |
922 | && GET_CODE (XEXP (XEXP (value, 0), 1)) == CONST_INT) | |
923 | /* This is for variables which are at offset zero from | |
924 | the frame pointer. This happens on the Alpha. | |
925 | Non-frame pointer registers are excluded above. */ | |
926 | || (GET_CODE (XEXP (value, 0)) == REG))) | |
37ba3390 | 927 | { |
6d55e0ab JW |
928 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) |
929 | or (MEM (REG...)). We want the value of that CONST_INT | |
930 | or zero. */ | |
37ba3390 RS |
931 | PUT_SDB_DEF (name); |
932 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET (XEXP (value, 0))); | |
933 | PUT_SDB_SCL (C_AUTO); | |
934 | } | |
5b7f1820 RS |
935 | else if (GET_CODE (value) == MEM && GET_CODE (XEXP (value, 0)) == CONST) |
936 | { | |
937 | /* Handle an obscure case which can arise when optimizing and | |
938 | when there are few available registers. (This is *always* | |
939 | the case for i386/i486 targets). The DECL_RTL looks like | |
940 | (MEM (CONST ...)) even though this variable is a local `auto' | |
941 | or a local `register' variable. In effect, what has happened | |
942 | is that the reload pass has seen that all assignments and | |
943 | references for one such a local variable can be replaced by | |
944 | equivalent assignments and references to some static storage | |
945 | variable, thereby avoiding the need for a register. In such | |
946 | cases we're forced to lie to debuggers and tell them that | |
947 | this variable was itself `static'. */ | |
948 | PUT_SDB_DEF (name); | |
949 | PUT_SDB_VAL (XEXP (XEXP (value, 0), 0)); | |
950 | PUT_SDB_SCL (C_STAT); | |
951 | } | |
37ba3390 RS |
952 | else |
953 | { | |
954 | /* It is something we don't know how to represent for SDB. */ | |
955 | return; | |
956 | } | |
957 | break; | |
1d300e19 KG |
958 | |
959 | default: | |
960 | break; | |
37ba3390 RS |
961 | } |
962 | PUT_SDB_TYPE (plain_type (type)); | |
963 | PUT_SDB_ENDEF; | |
964 | } | |
965 | \f | |
966 | /* Output SDB information for a top-level initialized variable | |
967 | that has been delayed. */ | |
968 | ||
969 | void | |
970 | sdbout_toplevel_data (decl) | |
971 | tree decl; | |
972 | { | |
973 | tree type = TREE_TYPE (decl); | |
974 | ||
5e32e83b RS |
975 | if (DECL_IGNORED_P (decl)) |
976 | return; | |
977 | ||
37ba3390 RS |
978 | if (! (TREE_CODE (decl) == VAR_DECL |
979 | && GET_CODE (DECL_RTL (decl)) == MEM | |
980 | && DECL_INITIAL (decl))) | |
981 | abort (); | |
982 | ||
983 | PUT_SDB_DEF (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
984 | PUT_SDB_VAL (XEXP (DECL_RTL (decl), 0)); | |
985 | if (TREE_PUBLIC (decl)) | |
986 | { | |
987 | PUT_SDB_SCL (C_EXT); | |
988 | } | |
989 | else | |
990 | { | |
991 | PUT_SDB_SCL (C_STAT); | |
992 | } | |
993 | PUT_SDB_TYPE (plain_type (type)); | |
994 | PUT_SDB_ENDEF; | |
995 | } | |
996 | \f | |
997 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
998 | ||
0f41302f | 999 | /* Machinery to record and output anonymous types. */ |
37ba3390 RS |
1000 | |
1001 | static tree anonymous_types; | |
1002 | ||
1003 | static void | |
1004 | sdbout_queue_anonymous_type (type) | |
1005 | tree type; | |
1006 | { | |
1007 | anonymous_types = saveable_tree_cons (NULL_TREE, type, anonymous_types); | |
1008 | } | |
1009 | ||
1010 | static void | |
1011 | sdbout_dequeue_anonymous_types () | |
1012 | { | |
1013 | register tree types, link; | |
1014 | ||
1015 | while (anonymous_types) | |
1016 | { | |
1017 | types = nreverse (anonymous_types); | |
1018 | anonymous_types = NULL_TREE; | |
1019 | ||
1020 | for (link = types; link; link = TREE_CHAIN (link)) | |
1021 | { | |
1022 | register tree type = TREE_VALUE (link); | |
1023 | ||
c325abbd | 1024 | if (type && ! TREE_ASM_WRITTEN (type)) |
37ba3390 RS |
1025 | sdbout_one_type (type); |
1026 | } | |
1027 | } | |
1028 | } | |
1029 | ||
1030 | #endif | |
1031 | \f | |
1032 | /* Given a chain of ..._TYPE nodes, all of which have names, | |
1033 | output definitions of those names, as typedefs. */ | |
1034 | ||
1035 | void | |
1036 | sdbout_types (types) | |
1037 | register tree types; | |
1038 | { | |
1039 | register tree link; | |
1040 | ||
1041 | for (link = types; link; link = TREE_CHAIN (link)) | |
1042 | sdbout_one_type (link); | |
1043 | ||
1044 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1045 | sdbout_dequeue_anonymous_types (); | |
1046 | #endif | |
1047 | } | |
1048 | ||
1049 | static void | |
1050 | sdbout_type (type) | |
1051 | tree type; | |
1052 | { | |
37ba3390 RS |
1053 | if (type == error_mark_node) |
1054 | type = integer_type_node; | |
1055 | PUT_SDB_TYPE (plain_type (type)); | |
1056 | } | |
1057 | ||
1058 | /* Output types of the fields of type TYPE, if they are structs. | |
1059 | ||
1060 | Formerly did not chase through pointer types, since that could be circular. | |
1061 | They must come before TYPE, since forward refs are not allowed. | |
1062 | Now james@bigtex.cactus.org says to try them. */ | |
1063 | ||
1064 | static void | |
1065 | sdbout_field_types (type) | |
1066 | tree type; | |
1067 | { | |
1068 | tree tail; | |
1069 | for (tail = TYPE_FIELDS (type); tail; tail = TREE_CHAIN (tail)) | |
1070 | if (TREE_CODE (TREE_TYPE (tail)) == POINTER_TYPE) | |
1071 | sdbout_one_type (TREE_TYPE (TREE_TYPE (tail))); | |
1072 | else | |
1073 | sdbout_one_type (TREE_TYPE (tail)); | |
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. */ | |
1106 | if (TYPE_SIZE (type) == 0) | |
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); | |
1147 | int member_scl; | |
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. */ | |
1186 | if (TYPE_BINFO (type) | |
1187 | && TYPE_BINFO_BASETYPES (type)) | |
1188 | n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type)); | |
1189 | for (i = 0; i < n_baseclasses; i++) | |
1190 | { | |
1191 | tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)), i); | |
1192 | tree child_type = BINFO_TYPE (child); | |
1193 | tree child_type_name; | |
1194 | if (TYPE_NAME (child_type) == 0) | |
1195 | continue; | |
1196 | if (TREE_CODE (TYPE_NAME (child_type)) == IDENTIFIER_NODE) | |
1197 | child_type_name = TYPE_NAME (child_type); | |
1198 | else if (TREE_CODE (TYPE_NAME (child_type)) == TYPE_DECL) | |
ee3e2d3d JW |
1199 | { |
1200 | child_type_name = DECL_NAME (TYPE_NAME (child_type)); | |
1201 | if (child_type_name && template_name_p (child_type_name)) | |
1202 | child_type_name | |
1203 | = DECL_ASSEMBLER_NAME (TYPE_NAME (child_type)); | |
1204 | } | |
5b7f1820 RS |
1205 | else |
1206 | continue; | |
1207 | ||
1208 | CONTIN; | |
1209 | PUT_SDB_DEF (IDENTIFIER_POINTER (child_type_name)); | |
1210 | PUT_SDB_INT_VAL (TREE_INT_CST_LOW (BINFO_OFFSET (child))); | |
1211 | PUT_SDB_SCL (member_scl); | |
1212 | sdbout_type (BINFO_TYPE (child)); | |
1213 | PUT_SDB_ENDEF; | |
1214 | } | |
1215 | ||
37ba3390 RS |
1216 | /* output the individual fields */ |
1217 | ||
1218 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
1219 | for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) | |
1220 | { | |
1221 | PUT_SDB_DEF (IDENTIFIER_POINTER (TREE_PURPOSE (tem))); | |
1222 | PUT_SDB_INT_VAL (TREE_INT_CST_LOW (TREE_VALUE (tem))); | |
1223 | PUT_SDB_SCL (C_MOE); | |
1224 | PUT_SDB_TYPE (T_MOE); | |
1225 | PUT_SDB_ENDEF; | |
1226 | } | |
1227 | ||
1228 | else /* record or union type */ | |
1229 | for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) | |
1230 | /* Output the name, type, position (in bits), size (in bits) | |
1231 | of each field. */ | |
1232 | ||
1233 | /* Omit here the nameless fields that are used to skip bits. | |
1234 | Also omit fields with variable size or position. | |
1235 | Also omit non FIELD_DECL nodes that GNU C++ may put here. */ | |
1236 | if (TREE_CODE (tem) == FIELD_DECL | |
1237 | && DECL_NAME (tem) != 0 | |
1238 | && TREE_CODE (DECL_SIZE (tem)) == INTEGER_CST | |
1239 | && TREE_CODE (DECL_FIELD_BITPOS (tem)) == INTEGER_CST) | |
1240 | { | |
0eb111c2 JW |
1241 | char *name; |
1242 | ||
37ba3390 | 1243 | CONTIN; |
95b2ff8b | 1244 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem)); |
0eb111c2 | 1245 | PUT_SDB_DEF (name); |
37ba3390 RS |
1246 | if (DECL_BIT_FIELD_TYPE (tem)) |
1247 | { | |
1248 | PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem))); | |
1249 | PUT_SDB_SCL (C_FIELD); | |
1250 | sdbout_type (DECL_BIT_FIELD_TYPE (tem)); | |
1251 | PUT_SDB_SIZE (TREE_INT_CST_LOW (DECL_SIZE (tem))); | |
1252 | } | |
1253 | else | |
1254 | { | |
1255 | PUT_SDB_INT_VAL (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem)) | |
1256 | / BITS_PER_UNIT); | |
1257 | PUT_SDB_SCL (member_scl); | |
1258 | sdbout_type (TREE_TYPE (tem)); | |
1259 | } | |
1260 | PUT_SDB_ENDEF; | |
1261 | } | |
1262 | /* output end of a structure,union, or enumeral definition */ | |
1263 | ||
1264 | PUT_SDB_PLAIN_DEF ("eos"); | |
1265 | PUT_SDB_INT_VAL (size); | |
1266 | PUT_SDB_SCL (C_EOS); | |
1267 | PUT_SDB_TAG (KNOWN_TYPE_TAG (type)); | |
1268 | PUT_SDB_SIZE (size); | |
1269 | PUT_SDB_ENDEF; | |
1270 | break; | |
1d300e19 KG |
1271 | |
1272 | default: | |
1273 | break; | |
37ba3390 RS |
1274 | } |
1275 | } | |
1276 | } | |
1277 | \f | |
1278 | /* The following two functions output definitions of function parameters. | |
1279 | Each parameter gets a definition locating it in the parameter list. | |
1280 | Each parameter that is a register variable gets a second definition | |
1281 | locating it in the register. | |
1282 | ||
1283 | Printing or argument lists in gdb uses the definitions that | |
1284 | locate in the parameter list. But reference to the variable in | |
1285 | expressions uses preferentially the definition as a register. */ | |
1286 | ||
1287 | /* Output definitions, referring to storage in the parmlist, | |
1288 | of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ | |
1289 | ||
1290 | static void | |
1291 | sdbout_parms (parms) | |
1292 | tree parms; | |
1293 | { | |
1294 | for (; parms; parms = TREE_CHAIN (parms)) | |
1295 | if (DECL_NAME (parms)) | |
1296 | { | |
1297 | int current_sym_value = 0; | |
1298 | char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); | |
1299 | ||
1300 | if (name == 0 || *name == 0) | |
1301 | name = gen_fake_label (); | |
1302 | ||
1303 | /* Perform any necessary register eliminations on the parameter's rtl, | |
1304 | so that the debugging output will be accurate. */ | |
db3cf6fb | 1305 | DECL_INCOMING_RTL (parms) |
1914f5da RH |
1306 | = eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX); |
1307 | DECL_RTL (parms) = eliminate_regs (DECL_RTL (parms), 0, NULL_RTX); | |
37ba3390 RS |
1308 | |
1309 | if (PARM_PASSED_IN_MEMORY (parms)) | |
1310 | { | |
1311 | rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0); | |
1312 | tree type; | |
1313 | ||
1314 | /* ??? Here we assume that the parm address is indexed | |
1315 | off the frame pointer or arg pointer. | |
1316 | If that is not true, we produce meaningless results, | |
1317 | but do not crash. */ | |
1318 | if (GET_CODE (addr) == PLUS | |
1319 | && GET_CODE (XEXP (addr, 1)) == CONST_INT) | |
1320 | current_sym_value = INTVAL (XEXP (addr, 1)); | |
1321 | else | |
1322 | current_sym_value = 0; | |
1323 | ||
1324 | if (GET_CODE (DECL_RTL (parms)) == REG | |
1325 | && REGNO (DECL_RTL (parms)) >= 0 | |
1326 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) | |
1327 | type = DECL_ARG_TYPE (parms); | |
1328 | else | |
1329 | { | |
1330 | int original_sym_value = current_sym_value; | |
1331 | ||
1332 | /* This is the case where the parm is passed as an int or | |
1333 | double and it is converted to a char, short or float | |
1334 | and stored back in the parmlist. In this case, describe | |
1335 | the parm with the variable's declared type, and adjust | |
1336 | the address if the least significant bytes (which we are | |
1337 | using) are not the first ones. */ | |
f76b9db2 ILT |
1338 | if (BYTES_BIG_ENDIAN |
1339 | && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
37ba3390 RS |
1340 | current_sym_value += |
1341 | (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
1342 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
f76b9db2 | 1343 | |
37ba3390 RS |
1344 | if (GET_CODE (DECL_RTL (parms)) == MEM |
1345 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
1346 | && (GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
1347 | == CONST_INT) | |
1348 | && (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) | |
1349 | == current_sym_value)) | |
1350 | type = TREE_TYPE (parms); | |
1351 | else | |
1352 | { | |
1353 | current_sym_value = original_sym_value; | |
1354 | type = DECL_ARG_TYPE (parms); | |
1355 | } | |
1356 | } | |
1357 | ||
1358 | PUT_SDB_DEF (name); | |
1359 | PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, addr)); | |
1360 | PUT_SDB_SCL (C_ARG); | |
1361 | PUT_SDB_TYPE (plain_type (type)); | |
1362 | PUT_SDB_ENDEF; | |
1363 | } | |
1364 | else if (GET_CODE (DECL_RTL (parms)) == REG) | |
1365 | { | |
1366 | rtx best_rtl; | |
1367 | /* Parm passed in registers and lives in registers or nowhere. */ | |
1368 | ||
1369 | /* If parm lives in a register, use that register; | |
1370 | pretend the parm was passed there. It would be more consistent | |
1371 | to describe the register where the parm was passed, | |
1372 | but in practice that register usually holds something else. */ | |
1373 | if (REGNO (DECL_RTL (parms)) >= 0 | |
1374 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) | |
1375 | best_rtl = DECL_RTL (parms); | |
1376 | /* If the parm lives nowhere, | |
1377 | use the register where it was passed. */ | |
1378 | else | |
1379 | best_rtl = DECL_INCOMING_RTL (parms); | |
1380 | ||
1381 | PUT_SDB_DEF (name); | |
1382 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (best_rtl))); | |
1383 | PUT_SDB_SCL (C_REGPARM); | |
21abd7a6 | 1384 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
37ba3390 RS |
1385 | PUT_SDB_ENDEF; |
1386 | } | |
1387 | else if (GET_CODE (DECL_RTL (parms)) == MEM | |
1388 | && XEXP (DECL_RTL (parms), 0) != const0_rtx) | |
1389 | { | |
1390 | /* Parm was passed in registers but lives on the stack. */ | |
1391 | ||
1392 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), | |
1393 | in which case we want the value of that CONST_INT, | |
1394 | or (MEM (REG ...)) or (MEM (MEM ...)), | |
1395 | in which case we use a value of zero. */ | |
1396 | if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG | |
1397 | || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM) | |
1398 | current_sym_value = 0; | |
1399 | else | |
1400 | current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); | |
1401 | ||
1402 | /* Again, this assumes the offset is based on the arg pointer. */ | |
1403 | PUT_SDB_DEF (name); | |
1404 | PUT_SDB_INT_VAL (DEBUGGER_ARG_OFFSET (current_sym_value, | |
1405 | XEXP (DECL_RTL (parms), 0))); | |
1406 | PUT_SDB_SCL (C_ARG); | |
21abd7a6 | 1407 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
37ba3390 RS |
1408 | PUT_SDB_ENDEF; |
1409 | } | |
1410 | } | |
1411 | } | |
1412 | ||
1413 | /* Output definitions for the places where parms live during the function, | |
1414 | when different from where they were passed, when the parms were passed | |
1415 | in memory. | |
1416 | ||
1417 | It is not useful to do this for parms passed in registers | |
1418 | that live during the function in different registers, because it is | |
1419 | impossible to look in the passed register for the passed value, | |
1420 | so we use the within-the-function register to begin with. | |
1421 | ||
1422 | PARMS is a chain of PARM_DECL nodes. */ | |
1423 | ||
1424 | static void | |
1425 | sdbout_reg_parms (parms) | |
1426 | tree parms; | |
1427 | { | |
1428 | for (; parms; parms = TREE_CHAIN (parms)) | |
1429 | if (DECL_NAME (parms)) | |
1430 | { | |
1431 | char *name = IDENTIFIER_POINTER (DECL_NAME (parms)); | |
1432 | ||
1433 | /* Report parms that live in registers during the function | |
1434 | but were passed in memory. */ | |
1435 | if (GET_CODE (DECL_RTL (parms)) == REG | |
1436 | && REGNO (DECL_RTL (parms)) >= 0 | |
1437 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER | |
1438 | && PARM_PASSED_IN_MEMORY (parms)) | |
1439 | { | |
1440 | if (name == 0 || *name == 0) | |
1441 | name = gen_fake_label (); | |
1442 | PUT_SDB_DEF (name); | |
1443 | PUT_SDB_INT_VAL (DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms)))); | |
1444 | PUT_SDB_SCL (C_REG); | |
21abd7a6 | 1445 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); |
37ba3390 RS |
1446 | PUT_SDB_ENDEF; |
1447 | } | |
1448 | /* Report parms that live in memory but not where they were passed. */ | |
1449 | else if (GET_CODE (DECL_RTL (parms)) == MEM | |
1450 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
1451 | && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT | |
1452 | && PARM_PASSED_IN_MEMORY (parms) | |
1453 | && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) | |
1454 | { | |
1455 | #if 0 /* ??? It is not clear yet what should replace this. */ | |
1456 | int offset = DECL_OFFSET (parms) / BITS_PER_UNIT; | |
1457 | /* A parm declared char is really passed as an int, | |
1458 | so it occupies the least significant bytes. | |
1459 | On a big-endian machine those are not the low-numbered ones. */ | |
f76b9db2 ILT |
1460 | if (BYTES_BIG_ENDIAN |
1461 | && offset != -1 | |
1462 | && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
37ba3390 RS |
1463 | offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) |
1464 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
37ba3390 RS |
1465 | if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...} |
1466 | #endif | |
1467 | { | |
1468 | if (name == 0 || *name == 0) | |
1469 | name = gen_fake_label (); | |
1470 | PUT_SDB_DEF (name); | |
1471 | PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET | |
1472 | (XEXP (DECL_RTL (parms), 0))); | |
1473 | PUT_SDB_SCL (C_AUTO); | |
1474 | PUT_SDB_TYPE (plain_type (TREE_TYPE (parms))); | |
1475 | PUT_SDB_ENDEF; | |
1476 | } | |
1477 | } | |
1478 | } | |
1479 | } | |
1480 | \f | |
1481 | /* Describe the beginning of an internal block within a function. | |
1482 | Also output descriptions of variables defined in this block. | |
1483 | ||
1484 | N is the number of the block, by order of beginning, counting from 1, | |
1485 | and not counting the outermost (function top-level) block. | |
1486 | The blocks match the BLOCKs in DECL_INITIAL (current_function_decl), | |
1487 | if the count starts at 0 for the outermost one. */ | |
1488 | ||
1489 | void | |
1490 | sdbout_begin_block (file, line, n) | |
1491 | FILE *file; | |
1492 | int line; | |
1493 | int n; | |
1494 | { | |
1495 | tree decl = current_function_decl; | |
1496 | MAKE_LINE_SAFE (line); | |
9f27ca8b JW |
1497 | |
1498 | /* The SCO compiler does not emit a separate block for the function level | |
1499 | scope, so we avoid it here also. However, mips ECOFF compilers do emit | |
1500 | a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */ | |
1501 | #ifndef MIPS_DEBUGGING_INFO | |
1502 | if (n != 1) | |
1503 | #endif | |
1504 | PUT_SDB_BLOCK_START (line - sdb_begin_function_line); | |
1505 | ||
37ba3390 RS |
1506 | if (n == 1) |
1507 | { | |
1508 | /* Include the outermost BLOCK's variables in block 1. */ | |
1509 | next_block_number = 0; | |
1510 | do_block = 0; | |
1511 | sdbout_block (DECL_INITIAL (decl)); | |
1512 | } | |
1513 | /* If -g1, suppress all the internal symbols of functions | |
1514 | except for arguments. */ | |
1515 | if (debug_info_level != DINFO_LEVEL_TERSE) | |
1516 | { | |
1517 | next_block_number = 0; | |
1518 | do_block = n; | |
1519 | sdbout_block (DECL_INITIAL (decl)); | |
1520 | } | |
1521 | ||
1522 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1523 | sdbout_dequeue_anonymous_types (); | |
1524 | #endif | |
1525 | } | |
1526 | ||
1527 | /* Describe the end line-number of an internal block within a function. */ | |
1528 | ||
1529 | void | |
9f27ca8b | 1530 | sdbout_end_block (file, line, n) |
37ba3390 RS |
1531 | FILE *file; |
1532 | int line; | |
9f27ca8b | 1533 | int n; |
37ba3390 RS |
1534 | { |
1535 | MAKE_LINE_SAFE (line); | |
9f27ca8b JW |
1536 | |
1537 | /* The SCO compiler does not emit a separate block for the function level | |
1538 | scope, so we avoid it here also. However, mips ECOFF compilers do emit | |
1539 | a separate block, so we retain it when MIPS_DEBUGGING_INFO is defined. */ | |
1540 | #ifndef MIPS_DEBUGGING_INFO | |
1541 | if (n != 1) | |
1542 | #endif | |
37ba3390 RS |
1543 | PUT_SDB_BLOCK_END (line - sdb_begin_function_line); |
1544 | } | |
1545 | ||
1546 | /* Output sdb info for the current function name. | |
1547 | Called from assemble_start_function. */ | |
1548 | ||
1549 | void | |
1550 | sdbout_mark_begin_function () | |
1551 | { | |
1552 | sdbout_symbol (current_function_decl, 0); | |
1553 | } | |
1554 | ||
1555 | /* Called at beginning of function body (after prologue). | |
1556 | Record the function's starting line number, so we can output | |
1557 | relative line numbers for the other lines. | |
1558 | Describe beginning of outermost block. | |
1559 | Also describe the parameter list. */ | |
1560 | ||
1561 | void | |
1562 | sdbout_begin_function (line) | |
1563 | int line; | |
1564 | { | |
1565 | sdb_begin_function_line = line - 1; | |
1566 | PUT_SDB_FUNCTION_START (line); | |
1567 | sdbout_parms (DECL_ARGUMENTS (current_function_decl)); | |
1568 | sdbout_reg_parms (DECL_ARGUMENTS (current_function_decl)); | |
1569 | } | |
1570 | ||
1571 | /* Called at end of function (before epilogue). | |
1572 | Describe end of outermost block. */ | |
1573 | ||
1574 | void | |
1575 | sdbout_end_function (line) | |
1576 | int line; | |
1577 | { | |
1578 | #ifdef SDB_ALLOW_FORWARD_REFERENCES | |
1579 | sdbout_dequeue_anonymous_types (); | |
1580 | #endif | |
1581 | ||
1582 | MAKE_LINE_SAFE (line); | |
1583 | PUT_SDB_FUNCTION_END (line - sdb_begin_function_line); | |
1584 | ||
1585 | /* Indicate we are between functions, for line-number output. */ | |
1586 | sdb_begin_function_line = -1; | |
1587 | } | |
1588 | ||
1589 | /* Output sdb info for the absolute end of a function. | |
1590 | Called after the epilogue is output. */ | |
1591 | ||
1592 | void | |
1593 | sdbout_end_epilogue () | |
1594 | { | |
1595 | char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)); | |
1596 | PUT_SDB_EPILOGUE_END (name); | |
1597 | } | |
1598 | ||
1599 | /* Output sdb info for the given label. Called only if LABEL_NAME (insn) | |
1600 | is present. */ | |
1601 | ||
1602 | void | |
1603 | sdbout_label (insn) | |
1604 | register rtx insn; | |
1605 | { | |
1606 | PUT_SDB_DEF (LABEL_NAME (insn)); | |
1607 | PUT_SDB_VAL (insn); | |
1608 | PUT_SDB_SCL (C_LABEL); | |
1609 | PUT_SDB_TYPE (T_NULL); | |
1610 | PUT_SDB_ENDEF; | |
1611 | } | |
1612 | ||
cc694a81 DE |
1613 | /* Change to reading from a new source file. */ |
1614 | ||
1615 | void | |
1616 | sdbout_start_new_source_file (filename) | |
1617 | char *filename; | |
1618 | { | |
1619 | #ifdef MIPS_DEBUGGING_INFO | |
1620 | struct sdb_file *n = (struct sdb_file *) xmalloc (sizeof *n); | |
1621 | ||
1622 | n->next = current_file; | |
1623 | n->name = filename; | |
1624 | current_file = n; | |
1625 | PUT_SDB_SRC_FILE (filename); | |
1626 | #endif | |
1627 | } | |
1628 | ||
1629 | /* Revert to reading a previous source file. */ | |
1630 | ||
1631 | void | |
1632 | sdbout_resume_previous_source_file () | |
1633 | { | |
1634 | #ifdef MIPS_DEBUGGING_INFO | |
1635 | struct sdb_file *next; | |
1636 | ||
1637 | next = current_file->next; | |
1638 | free (current_file); | |
1639 | current_file = next; | |
1640 | PUT_SDB_SRC_FILE (current_file->name); | |
1641 | #endif | |
1642 | } | |
1643 | ||
37ba3390 | 1644 | #endif /* SDB_DEBUGGING_INFO */ |