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00fe048c RS |
1 | /* Output dbx-format symbol table information from GNU compiler. |
2 | Copyright (C) 1987, 1988, 1992 Free Software Foundation, Inc. | |
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 | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | /* Output dbx-format symbol table data. | |
22 | This consists of many symbol table entries, each of them | |
23 | a .stabs assembler pseudo-op with four operands: | |
24 | a "name" which is really a description of one symbol and its type, | |
25 | a "code", which is a symbol defined in stab.h whose name starts with N_, | |
26 | an unused operand always 0, | |
27 | and a "value" which is an address or an offset. | |
28 | The name is enclosed in doublequote characters. | |
29 | ||
30 | Each function, variable, typedef, and structure tag | |
31 | has a symbol table entry to define it. | |
32 | The beginning and end of each level of name scoping within | |
33 | a function are also marked by special symbol table entries. | |
34 | ||
35 | The "name" consists of the symbol name, a colon, a kind-of-symbol letter, | |
36 | and a data type number. The data type number may be followed by | |
37 | "=" and a type definition; normally this will happen the first time | |
38 | the type number is mentioned. The type definition may refer to | |
39 | other types by number, and those type numbers may be followed | |
40 | by "=" and nested definitions. | |
41 | ||
42 | This can make the "name" quite long. | |
43 | When a name is more than 80 characters, we split the .stabs pseudo-op | |
44 | into two .stabs pseudo-ops, both sharing the same "code" and "value". | |
45 | The first one is marked as continued with a double-backslash at the | |
46 | end of its "name". | |
47 | ||
48 | The kind-of-symbol letter distinguished function names from global | |
49 | variables from file-scope variables from parameters from auto | |
50 | variables in memory from typedef names from register variables. | |
51 | See `dbxout_symbol'. | |
52 | ||
53 | The "code" is mostly redundant with the kind-of-symbol letter | |
54 | that goes in the "name", but not entirely: for symbols located | |
55 | in static storage, the "code" says which segment the address is in, | |
56 | which controls how it is relocated. | |
57 | ||
58 | The "value" for a symbol in static storage | |
59 | is the core address of the symbol (actually, the assembler | |
60 | label for the symbol). For a symbol located in a stack slot | |
61 | it is the stack offset; for one in a register, the register number. | |
62 | For a typedef symbol, it is zero. | |
63 | ||
64 | If DEBUG_SYMS_TEXT is defined, all debugging symbols must be | |
65 | output while in the text section. | |
66 | ||
67 | For more on data type definitions, see `dbxout_type'. */ | |
68 | ||
69 | /* Include these first, because they may define MIN and MAX. */ | |
70 | #include <stdio.h> | |
00fe048c RS |
71 | #include <errno.h> |
72 | ||
73 | #include "config.h" | |
74 | #include "tree.h" | |
75 | #include "rtl.h" | |
76 | #include "flags.h" | |
77 | #include "regs.h" | |
78 | #include "insn-config.h" | |
79 | #include "reload.h" | |
80 | ||
81 | #ifndef errno | |
82 | extern int errno; | |
83 | #endif | |
84 | ||
b372168c | 85 | #ifdef XCOFF_DEBUGGING_INFO |
95f2ba07 | 86 | #include "xcoffout.h" |
b372168c MM |
87 | #endif |
88 | ||
00fe048c RS |
89 | #ifndef ASM_STABS_OP |
90 | #define ASM_STABS_OP ".stabs" | |
91 | #endif | |
92 | ||
93 | #ifndef ASM_STABN_OP | |
94 | #define ASM_STABN_OP ".stabn" | |
95 | #endif | |
96 | ||
b372168c MM |
97 | #ifndef DBX_DECL_STABS_CODE |
98 | #define DBX_DECL_STABS_CODE N_LSYM | |
99 | #endif | |
100 | ||
101 | #ifndef DBX_STATIC_CONST_VAR_CODE | |
102 | #define DBX_STATIC_CONST_VAR_CODE N_FUN | |
103 | #endif | |
104 | ||
105 | #ifndef DBX_REGPARM_STABS_CODE | |
106 | #define DBX_REGPARM_STABS_CODE N_RSYM | |
107 | #endif | |
108 | ||
109 | #ifndef DBX_REGPARM_STABS_LETTER | |
110 | #define DBX_REGPARM_STABS_LETTER 'P' | |
111 | #endif | |
112 | ||
00fe048c RS |
113 | /* Nonzero means if the type has methods, only output debugging |
114 | information if methods are actually written to the asm file. */ | |
115 | ||
116 | static int flag_minimal_debug = 1; | |
117 | ||
118 | /* Nonzero if we have actually used any of the GDB extensions | |
119 | to the debugging format. The idea is that we use them for the | |
120 | first time only if there's a strong reason, but once we have done that, | |
121 | we use them whenever convenient. */ | |
122 | ||
123 | static int have_used_extensions = 0; | |
124 | ||
b372168c | 125 | char *getpwd (); |
00fe048c RS |
126 | |
127 | /* Typical USG systems don't have stab.h, and they also have | |
128 | no use for DBX-format debugging info. */ | |
129 | ||
b372168c | 130 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
00fe048c RS |
131 | |
132 | #ifdef DEBUG_SYMS_TEXT | |
133 | #define FORCE_TEXT text_section (); | |
134 | #else | |
135 | #define FORCE_TEXT | |
136 | #endif | |
137 | ||
95f2ba07 | 138 | #if defined (USG) || defined (NO_STAB_H) |
00fe048c RS |
139 | #include "gstab.h" /* If doing DBX on sysV, use our own stab.h. */ |
140 | #else | |
141 | #include <stab.h> /* On BSD, use the system's stab.h. */ | |
142 | ||
143 | /* This is a GNU extension we need to reference in this file. */ | |
144 | #ifndef N_CATCH | |
145 | #define N_CATCH 0x54 | |
146 | #endif | |
147 | #endif /* not USG */ | |
148 | ||
149 | #ifdef __GNU_STAB__ | |
150 | #define STAB_CODE_TYPE enum __stab_debug_code | |
151 | #else | |
152 | #define STAB_CODE_TYPE int | |
153 | #endif | |
154 | ||
155 | /* 1 if PARM is passed to this function in memory. */ | |
156 | ||
157 | #define PARM_PASSED_IN_MEMORY(PARM) \ | |
158 | (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM) | |
159 | ||
160 | /* A C expression for the integer offset value of an automatic variable | |
161 | (N_LSYM) having address X (an RTX). */ | |
162 | #ifndef DEBUGGER_AUTO_OFFSET | |
163 | #define DEBUGGER_AUTO_OFFSET(X) \ | |
164 | (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) | |
165 | #endif | |
166 | ||
167 | /* A C expression for the integer offset value of an argument (N_PSYM) | |
168 | having address X (an RTX). The nominal offset is OFFSET. */ | |
169 | #ifndef DEBUGGER_ARG_OFFSET | |
170 | #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET) | |
171 | #endif | |
172 | ||
173 | /* Stream for writing to assembler file. */ | |
174 | ||
175 | static FILE *asmfile; | |
176 | ||
177 | /* Last source file name mentioned in a NOTE insn. */ | |
178 | ||
179 | static char *lastfile; | |
180 | ||
181 | /* Current working directory. */ | |
182 | ||
183 | static char *cwd; | |
00fe048c RS |
184 | |
185 | enum typestatus {TYPE_UNSEEN, TYPE_XREF, TYPE_DEFINED}; | |
186 | ||
187 | /* Vector recording the status of describing C data types. | |
188 | When we first notice a data type (a tree node), | |
189 | we assign it a number using next_type_number. | |
190 | That is its index in this vector. | |
191 | The vector element says whether we have yet output | |
192 | the definition of the type. TYPE_XREF says we have | |
193 | output it as a cross-reference only. */ | |
194 | ||
195 | enum typestatus *typevec; | |
196 | ||
197 | /* Number of elements of space allocated in `typevec'. */ | |
198 | ||
199 | static int typevec_len; | |
200 | ||
201 | /* In dbx output, each type gets a unique number. | |
202 | This is the number for the next type output. | |
203 | The number, once assigned, is in the TYPE_SYMTAB_ADDRESS field. */ | |
204 | ||
205 | static int next_type_number; | |
206 | ||
207 | /* In dbx output, we must assign symbol-blocks id numbers | |
208 | in the order in which their beginnings are encountered. | |
209 | We output debugging info that refers to the beginning and | |
210 | end of the ranges of code in each block | |
211 | with assembler labels LBBn and LBEn, where n is the block number. | |
212 | The labels are generated in final, which assigns numbers to the | |
213 | blocks in the same way. */ | |
214 | ||
215 | static int next_block_number; | |
216 | ||
217 | /* These variables are for dbxout_symbol to communicate to | |
218 | dbxout_finish_symbol. | |
219 | current_sym_code is the symbol-type-code, a symbol N_... define in stab.h. | |
220 | current_sym_value and current_sym_addr are two ways to address the | |
221 | value to store in the symtab entry. | |
222 | current_sym_addr if nonzero represents the value as an rtx. | |
223 | If that is zero, current_sym_value is used. This is used | |
224 | when the value is an offset (such as for auto variables, | |
225 | register variables and parms). */ | |
226 | ||
227 | static STAB_CODE_TYPE current_sym_code; | |
228 | static int current_sym_value; | |
229 | static rtx current_sym_addr; | |
230 | ||
231 | /* Number of chars of symbol-description generated so far for the | |
232 | current symbol. Used by CHARS and CONTIN. */ | |
233 | ||
234 | static int current_sym_nchars; | |
235 | ||
236 | /* Report having output N chars of the current symbol-description. */ | |
237 | ||
238 | #define CHARS(N) (current_sym_nchars += (N)) | |
239 | ||
240 | /* Break the current symbol-description, generating a continuation, | |
241 | if it has become long. */ | |
242 | ||
243 | #ifndef DBX_CONTIN_LENGTH | |
244 | #define DBX_CONTIN_LENGTH 80 | |
245 | #endif | |
246 | ||
247 | #if DBX_CONTIN_LENGTH > 0 | |
248 | #define CONTIN \ | |
249 | do {if (current_sym_nchars > DBX_CONTIN_LENGTH) dbxout_continue ();} while (0) | |
250 | #else | |
251 | #define CONTIN | |
252 | #endif | |
253 | ||
254 | void dbxout_types (); | |
255 | void dbxout_args (); | |
256 | void dbxout_symbol (); | |
257 | static void dbxout_type_name (); | |
258 | static void dbxout_type (); | |
259 | static void dbxout_typedefs (); | |
260 | static void dbxout_prepare_symbol (); | |
261 | static void dbxout_finish_symbol (); | |
262 | static void dbxout_continue (); | |
263 | static void print_int_cst_octal (); | |
264 | static void print_octal (); | |
265 | \f | |
266 | #if 0 /* Not clear we will actually need this. */ | |
267 | ||
268 | /* Return the absolutized filename for the given relative | |
269 | filename. Note that if that filename is already absolute, it may | |
270 | still be returned in a modified form because this routine also | |
271 | eliminates redundant slashes and single dots and eliminates double | |
272 | dots to get a shortest possible filename from the given input | |
273 | filename. The absolutization of relative filenames is made by | |
274 | assuming that the given filename is to be taken as relative to | |
275 | the first argument (cwd) or to the current directory if cwd is | |
276 | NULL. */ | |
277 | ||
278 | static char * | |
279 | abspath (rel_filename) | |
280 | char *rel_filename; | |
281 | { | |
282 | /* Setup the current working directory as needed. */ | |
283 | char *abs_buffer | |
284 | = (char *) alloca (strlen (cwd) + strlen (rel_filename) + 1); | |
285 | char *endp = abs_buffer; | |
286 | char *outp, *inp; | |
287 | char *value; | |
288 | ||
b372168c | 289 | /* Copy the filename (possibly preceded by the current working |
00fe048c RS |
290 | directory name) into the absolutization buffer. */ |
291 | ||
292 | { | |
293 | char *src_p; | |
294 | ||
295 | if (rel_filename[0] != '/') | |
296 | { | |
297 | src_p = cwd; | |
298 | while (*endp++ = *src_p++) | |
299 | continue; | |
300 | *(endp-1) = '/'; /* overwrite null */ | |
301 | } | |
302 | src_p = rel_filename; | |
303 | while (*endp++ = *src_p++) | |
304 | continue; | |
305 | if (endp[-1] == '/') | |
306 | *endp = '\0'; | |
00fe048c RS |
307 | |
308 | /* Now make a copy of abs_buffer into abs_buffer, shortening the | |
309 | filename (by taking out slashes and dots) as we go. */ | |
310 | ||
311 | outp = inp = abs_buffer; | |
312 | *outp++ = *inp++; /* copy first slash */ | |
313 | for (;;) | |
314 | { | |
315 | if (!inp[0]) | |
316 | break; | |
317 | else if (inp[0] == '/' && outp[-1] == '/') | |
318 | { | |
319 | inp++; | |
320 | continue; | |
321 | } | |
322 | else if (inp[0] == '.' && outp[-1] == '/') | |
323 | { | |
324 | if (!inp[1]) | |
325 | break; | |
326 | else if (inp[1] == '/') | |
327 | { | |
328 | inp += 2; | |
329 | continue; | |
330 | } | |
331 | else if ((inp[1] == '.') && (inp[2] == 0 || inp[2] == '/')) | |
332 | { | |
333 | inp += (inp[2] == '/') ? 3 : 2; | |
334 | outp -= 2; | |
335 | while (outp >= abs_buffer && *outp != '/') | |
336 | outp--; | |
337 | if (outp < abs_buffer) | |
338 | { | |
339 | /* Catch cases like /.. where we try to backup to a | |
340 | point above the absolute root of the logical file | |
341 | system. */ | |
342 | ||
343 | fprintf (stderr, "%s: invalid file name: %s\n", | |
344 | pname, rel_filename); | |
345 | exit (1); | |
346 | } | |
347 | *++outp = '\0'; | |
348 | continue; | |
349 | } | |
350 | } | |
351 | *outp++ = *inp++; | |
352 | } | |
353 | ||
354 | /* On exit, make sure that there is a trailing null, and make sure that | |
355 | the last character of the returned string is *not* a slash. */ | |
356 | ||
357 | *outp = '\0'; | |
358 | if (outp[-1] == '/') | |
359 | *--outp = '\0'; | |
360 | ||
361 | /* Make a copy (in the heap) of the stuff left in the absolutization | |
362 | buffer and return a pointer to the copy. */ | |
363 | ||
364 | value = (char *) oballoc (strlen (abs_buffer) + 1); | |
365 | strcpy (value, abs_buffer); | |
366 | return value; | |
367 | } | |
368 | #endif /* 0 */ | |
369 | \f | |
370 | /* At the beginning of compilation, start writing the symbol table. | |
371 | Initialize `typevec' and output the standard data types of C. */ | |
372 | ||
373 | void | |
374 | dbxout_init (asm_file, input_file_name, syms) | |
375 | FILE *asm_file; | |
376 | char *input_file_name; | |
377 | tree syms; | |
378 | { | |
379 | char ltext_label_name[100]; | |
380 | ||
381 | asmfile = asm_file; | |
382 | ||
383 | typevec_len = 100; | |
384 | typevec = (enum typestatus *) xmalloc (typevec_len * sizeof typevec[0]); | |
385 | bzero (typevec, typevec_len * sizeof typevec[0]); | |
386 | ||
387 | /* Convert Ltext into the appropriate format for local labels in case | |
388 | the system doesn't insert underscores in front of user generated | |
389 | labels. */ | |
390 | ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", 0); | |
391 | ||
392 | /* Put the current working directory in an N_SO symbol. */ | |
b372168c MM |
393 | #ifndef DBX_WORKING_DIRECTORY /* Only some versions of DBX want this, |
394 | but GDB always does. */ | |
395 | if (use_gdb_dbx_extensions) | |
396 | #endif | |
397 | { | |
398 | if (cwd || (cwd = getpwd ())) | |
399 | { | |
00fe048c | 400 | #ifdef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY |
b372168c | 401 | DBX_OUTPUT_MAIN_SOURCE_DIRECTORY (asmfile, cwd); |
00fe048c | 402 | #else /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
b372168c MM |
403 | fprintf (asmfile, "%s \"%s/\",%d,0,0,%s\n", ASM_STABS_OP, |
404 | cwd, N_SO, <ext_label_name[1]); | |
00fe048c | 405 | #endif /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
b372168c MM |
406 | } |
407 | } | |
00fe048c RS |
408 | |
409 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILENAME | |
410 | /* This should NOT be DBX_OUTPUT_SOURCE_FILENAME. That | |
411 | would give us an N_SOL, and we want an N_SO. */ | |
412 | DBX_OUTPUT_MAIN_SOURCE_FILENAME (asmfile, input_file_name); | |
413 | #else /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */ | |
414 | /* We include outputting `Ltext:' here, | |
415 | because that gives you a way to override it. */ | |
416 | /* Used to put `Ltext:' before the reference, but that loses on sun 4. */ | |
417 | fprintf (asmfile, "%s \"%s\",%d,0,0,%s\n", ASM_STABS_OP, input_file_name, | |
418 | N_SO, <ext_label_name[1]); | |
419 | text_section (); | |
420 | ASM_OUTPUT_INTERNAL_LABEL (asmfile, "Ltext", 0); | |
421 | #endif /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */ | |
422 | ||
423 | lastfile = input_file_name; | |
424 | ||
425 | next_type_number = 1; | |
426 | next_block_number = 2; | |
427 | ||
428 | /* Make sure that types `int' and `char' have numbers 1 and 2. | |
429 | Definitions of other integer types will refer to those numbers. | |
430 | (Actually it should no longer matter what their numbers are. | |
431 | Also, if any types with tags have been defined, dbxout_symbol | |
432 | will output them first, so the numbers won't be 1 and 2. That | |
433 | happens in C++. So it's a good thing it should no longer matter). */ | |
434 | ||
435 | #ifdef DBX_OUTPUT_STANDARD_TYPES | |
436 | DBX_OUTPUT_STANDARD_TYPES (syms); | |
437 | #else | |
438 | dbxout_symbol (TYPE_NAME (integer_type_node), 0); | |
439 | dbxout_symbol (TYPE_NAME (char_type_node), 0); | |
440 | #endif | |
441 | ||
442 | /* Get all permanent types that have typedef names, | |
443 | and output them all, except for those already output. */ | |
444 | ||
445 | dbxout_typedefs (syms); | |
446 | } | |
447 | ||
448 | /* Output any typedef names for types described by TYPE_DECLs in SYMS, | |
449 | in the reverse order from that which is found in SYMS. */ | |
450 | ||
451 | static void | |
452 | dbxout_typedefs (syms) | |
453 | tree syms; | |
454 | { | |
455 | if (syms) | |
456 | { | |
457 | dbxout_typedefs (TREE_CHAIN (syms)); | |
458 | if (TREE_CODE (syms) == TYPE_DECL) | |
459 | { | |
460 | tree type = TREE_TYPE (syms); | |
461 | if (TYPE_NAME (type) | |
462 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
463 | && ! TREE_ASM_WRITTEN (TYPE_NAME (type))) | |
464 | dbxout_symbol (TYPE_NAME (type), 0); | |
465 | } | |
466 | } | |
467 | } | |
468 | ||
469 | /* Output debugging info to FILE to switch to sourcefile FILENAME. */ | |
470 | ||
471 | void | |
472 | dbxout_source_file (file, filename) | |
473 | FILE *file; | |
474 | char *filename; | |
475 | { | |
476 | char ltext_label_name[100]; | |
477 | ||
478 | if (filename && (lastfile == 0 || strcmp (filename, lastfile))) | |
479 | { | |
480 | #ifdef DBX_OUTPUT_SOURCE_FILENAME | |
481 | DBX_OUTPUT_SOURCE_FILENAME (file, filename); | |
482 | #else | |
483 | ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", 0); | |
484 | fprintf (file, "%s \"%s\",%d,0,0,%s\n", ASM_STABS_OP, | |
485 | filename, N_SOL, <ext_label_name[1]); | |
486 | #endif | |
487 | lastfile = filename; | |
488 | } | |
489 | } | |
490 | ||
491 | /* At the end of compilation, finish writing the symbol table. | |
492 | Unless you define DBX_OUTPUT_MAIN_SOURCE_FILE_END, the default is | |
493 | to do nothing. */ | |
494 | ||
495 | void | |
496 | dbxout_finish (file, filename) | |
497 | FILE *file; | |
498 | char *filename; | |
499 | { | |
500 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILE_END | |
501 | DBX_OUTPUT_MAIN_SOURCE_FILE_END (file, filename); | |
502 | #endif /* DBX_OUTPUT_MAIN_SOURCE_FILE_END */ | |
503 | } | |
504 | ||
505 | /* Continue a symbol-description that gets too big. | |
506 | End one symbol table entry with a double-backslash | |
507 | and start a new one, eventually producing something like | |
508 | .stabs "start......\\",code,0,value | |
509 | .stabs "...rest",code,0,value */ | |
510 | ||
511 | static void | |
512 | dbxout_continue () | |
513 | { | |
514 | #ifdef DBX_CONTIN_CHAR | |
515 | fprintf (asmfile, "%c", DBX_CONTIN_CHAR); | |
516 | #else | |
517 | fprintf (asmfile, "\\\\"); | |
518 | #endif | |
519 | dbxout_finish_symbol (0); | |
520 | fprintf (asmfile, "%s \"", ASM_STABS_OP); | |
521 | current_sym_nchars = 0; | |
522 | } | |
523 | \f | |
6dc42e49 | 524 | /* Subroutine of `dbxout_type'. Output the type fields of TYPE. |
00fe048c RS |
525 | This must be a separate function because anonymous unions require |
526 | recursive calls. */ | |
527 | ||
528 | static void | |
529 | dbxout_type_fields (type) | |
530 | tree type; | |
531 | { | |
532 | tree tem; | |
533 | for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) | |
534 | { | |
535 | /* Output the name, type, position (in bits), size (in bits) | |
536 | of each field. */ | |
537 | if (DECL_NAME (tem) == NULL_TREE | |
538 | && TREE_CODE (TREE_TYPE (tem)) == UNION_TYPE) | |
539 | dbxout_type_fields (TREE_TYPE (tem)); | |
540 | /* Omit here local type decls until we know how to support them. */ | |
541 | else if (TREE_CODE (tem) == TYPE_DECL) | |
542 | continue; | |
543 | /* Omit here the nameless fields that are used to skip bits. */ | |
544 | else if (DECL_NAME (tem) != 0 && TREE_CODE (tem) != CONST_DECL) | |
545 | { | |
546 | /* Continue the line if necessary, | |
547 | but not before the first field. */ | |
548 | if (tem != TYPE_FIELDS (type)) | |
549 | CONTIN; | |
550 | ||
551 | if (use_gdb_dbx_extensions | |
552 | && flag_minimal_debug | |
553 | && TREE_CODE (tem) == FIELD_DECL | |
554 | && DECL_VIRTUAL_P (tem) | |
555 | && DECL_ASSEMBLER_NAME (tem)) | |
556 | { | |
557 | have_used_extensions = 1; | |
558 | CHARS (3 + IDENTIFIER_LENGTH (DECL_NAME (TYPE_NAME (DECL_FCONTEXT (tem))))); | |
559 | fputs (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem)), asmfile); | |
3a7587e4 | 560 | dbxout_type (DECL_FCONTEXT (tem), 0, 0); |
00fe048c | 561 | fprintf (asmfile, ":"); |
3a7587e4 | 562 | dbxout_type (TREE_TYPE (tem), 0, 0); |
00fe048c RS |
563 | fprintf (asmfile, ",%d;", |
564 | TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem))); | |
565 | continue; | |
566 | } | |
567 | ||
568 | fprintf (asmfile, "%s:", IDENTIFIER_POINTER (DECL_NAME (tem))); | |
569 | CHARS (2 + IDENTIFIER_LENGTH (DECL_NAME (tem))); | |
570 | ||
571 | if (use_gdb_dbx_extensions | |
572 | && (TREE_PRIVATE (tem) || TREE_PROTECTED (tem) | |
573 | || TREE_CODE (tem) != FIELD_DECL)) | |
574 | { | |
575 | have_used_extensions = 1; | |
576 | putc ('/', asmfile); | |
577 | putc ((TREE_PRIVATE (tem) ? '0' | |
578 | : TREE_PROTECTED (tem) ? '1' : '2'), | |
579 | asmfile); | |
580 | CHARS (2); | |
581 | } | |
582 | ||
583 | dbxout_type ((TREE_CODE (tem) == FIELD_DECL | |
584 | && DECL_BIT_FIELD_TYPE (tem)) | |
585 | ? DECL_BIT_FIELD_TYPE (tem) | |
3a7587e4 | 586 | : TREE_TYPE (tem), 0, 0); |
00fe048c RS |
587 | |
588 | if (TREE_CODE (tem) == VAR_DECL) | |
589 | { | |
590 | if (TREE_STATIC (tem) && use_gdb_dbx_extensions) | |
591 | { | |
592 | char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem)); | |
593 | have_used_extensions = 1; | |
00fe048c RS |
594 | fprintf (asmfile, ":%s;", name); |
595 | CHARS (strlen (name)); | |
596 | } | |
597 | else | |
598 | { | |
599 | /* If TEM is non-static, GDB won't understand it. */ | |
600 | fprintf (asmfile, ",0,0;"); | |
601 | } | |
602 | } | |
603 | else if (TREE_CODE (DECL_FIELD_BITPOS (tem)) == INTEGER_CST) | |
604 | { | |
605 | fprintf (asmfile, ",%d,%d;", | |
606 | TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem)), | |
607 | TREE_INT_CST_LOW (DECL_SIZE (tem))); | |
608 | } | |
609 | else | |
610 | /* This has yet to be implemented. */ | |
611 | abort (); | |
612 | CHARS (23); | |
613 | } | |
614 | } | |
615 | } | |
616 | \f | |
6dc42e49 | 617 | /* Subroutine of `dbxout_type_methods'. Output debug info about the |
00fe048c RS |
618 | method described DECL. DEBUG_NAME is an encoding of the method's |
619 | type signature. ??? We may be able to do without DEBUG_NAME altogether | |
620 | now. */ | |
621 | ||
622 | static void | |
623 | dbxout_type_method_1 (decl, debug_name) | |
624 | tree decl; | |
625 | char *debug_name; | |
626 | { | |
627 | tree firstarg = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))); | |
628 | char c1 = 'A', c2; | |
629 | ||
630 | if (TREE_CODE (TREE_TYPE (decl)) == FUNCTION_TYPE) | |
631 | c2 = '?'; | |
632 | else /* it's a METHOD_TYPE. */ | |
633 | { | |
634 | /* A for normal functions. | |
635 | B for `const' member functions. | |
636 | C for `volatile' member functions. | |
637 | D for `const volatile' member functions. */ | |
638 | if (TYPE_READONLY (TREE_TYPE (firstarg))) | |
639 | c1 += 1; | |
640 | if (TYPE_VOLATILE (TREE_TYPE (firstarg))) | |
641 | c1 += 2; | |
642 | ||
643 | if (DECL_VINDEX (decl)) | |
644 | c2 = '*'; | |
645 | else | |
646 | c2 = '.'; | |
647 | } | |
648 | ||
649 | fprintf (asmfile, ":%s;%c%c%c", debug_name, | |
650 | TREE_PRIVATE (decl) ? '0' : TREE_PROTECTED (decl) ? '1' : '2', c1, c2); | |
651 | CHARS (IDENTIFIER_LENGTH (DECL_ASSEMBLER_NAME (decl)) + 6 | |
652 | - (debug_name - IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)))); | |
653 | if (DECL_VINDEX (decl)) | |
654 | { | |
655 | fprintf (asmfile, "%d;", | |
656 | TREE_INT_CST_LOW (DECL_VINDEX (decl))); | |
3a7587e4 | 657 | dbxout_type (DECL_CONTEXT (decl), 0, 0); |
00fe048c RS |
658 | fprintf (asmfile, ";"); |
659 | CHARS (8); | |
660 | } | |
661 | } | |
662 | \f | |
663 | /* Subroutine of `dbxout_type'. Output debug info about the methods defined | |
664 | in TYPE. */ | |
665 | ||
666 | static void | |
667 | dbxout_type_methods (type) | |
668 | register tree type; | |
669 | { | |
670 | /* C++: put out the method names and their parameter lists */ | |
00fe048c | 671 | tree methods = TYPE_METHODS (type); |
95f2ba07 | 672 | tree type_encoding; |
00fe048c RS |
673 | register tree fndecl; |
674 | register tree last; | |
675 | register int type_identifier_length; | |
676 | ||
677 | if (methods == NULL_TREE) | |
678 | return; | |
679 | ||
3a7587e4 | 680 | type_encoding = DECL_NAME (TYPE_NAME (type)); |
95f2ba07 KR |
681 | |
682 | /* C++: Template classes break some assumptions made by this code about | |
683 | the class names, constructor names, and encodings for assembler | |
684 | label names. For now, disable output of dbx info for them. */ | |
685 | { | |
3a7587e4 | 686 | char *ptr = IDENTIFIER_POINTER (type_encoding); |
95f2ba07 KR |
687 | /* Avoid strchr or index since those names aren't universal. */ |
688 | while (*ptr && *ptr != '<') ptr++; | |
689 | if (*ptr != 0) | |
690 | { | |
691 | static int warned; | |
692 | if (!warned) | |
693 | { | |
694 | warned = 1; | |
695 | warning ("dbx info for template class methods not yet supported"); | |
696 | } | |
697 | return; | |
698 | } | |
699 | } | |
700 | ||
3a7587e4 | 701 | type_identifier_length = IDENTIFIER_LENGTH (type_encoding); |
95f2ba07 | 702 | |
00fe048c RS |
703 | if (TREE_CODE (methods) == FUNCTION_DECL) |
704 | fndecl = methods; | |
705 | else if (TREE_VEC_ELT (methods, 0) != NULL_TREE) | |
706 | fndecl = TREE_VEC_ELT (methods, 0); | |
707 | else fndecl = TREE_VEC_ELT (methods, 1); | |
708 | ||
00fe048c RS |
709 | while (fndecl) |
710 | { | |
711 | tree name = DECL_NAME (fndecl); | |
3a7587e4 | 712 | int need_prefix = 1; |
00fe048c | 713 | |
3a7587e4 RS |
714 | /* Group together all the methods for the same operation. |
715 | These differ in the types of the arguments. */ | |
00fe048c RS |
716 | for (last = NULL_TREE; |
717 | fndecl && (last == NULL_TREE || DECL_NAME (fndecl) == DECL_NAME (last)); | |
718 | fndecl = TREE_CHAIN (fndecl)) | |
719 | /* Output the name of the field (after overloading), as | |
720 | well as the name of the field before overloading, along | |
721 | with its parameter list */ | |
722 | { | |
3a7587e4 RS |
723 | /* This is the "mangled" name of the method. |
724 | It encodes the argument types. */ | |
00fe048c | 725 | char *debug_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fndecl)); |
3a7587e4 | 726 | int destructor = 0; |
00fe048c RS |
727 | |
728 | CONTIN; | |
729 | ||
730 | last = fndecl; | |
3a7587e4 RS |
731 | |
732 | if (DECL_IGNORED_P (fndecl)) | |
733 | continue; | |
734 | ||
00fe048c RS |
735 | if (flag_minimal_debug) |
736 | { | |
3a7587e4 RS |
737 | /* Detect ordinary methods because their mangled names |
738 | start with the operation name. */ | |
739 | if (!strncmp (IDENTIFIER_POINTER (name), debug_name, | |
740 | IDENTIFIER_LENGTH (name))) | |
741 | { | |
742 | debug_name += IDENTIFIER_LENGTH (name); | |
743 | if (debug_name[0] == '_' && debug_name[1] == '_') | |
744 | { | |
745 | char *method_name = debug_name + 2; | |
746 | /* Get past const and volatile qualifiers. */ | |
747 | while (*method_name == 'C' || *method_name == 'V') | |
748 | method_name++; | |
749 | if (! strncmp (method_name, | |
750 | IDENTIFIER_POINTER (type_encoding), | |
751 | type_identifier_length)) | |
752 | method_name += type_identifier_length; | |
753 | debug_name = method_name; | |
754 | } | |
755 | } | |
756 | /* Detect constructors by their style of name mangling. */ | |
757 | else if (debug_name[0] == '_' && debug_name[1] == '_') | |
758 | { | |
759 | char *ctor_name = debug_name + 2; | |
760 | while (*ctor_name == 'C' || *ctor_name == 'V') | |
761 | ctor_name++; | |
762 | if (!strncmp (IDENTIFIER_POINTER (type_encoding), ctor_name, | |
763 | type_identifier_length)) | |
764 | debug_name = ctor_name + type_identifier_length; | |
765 | } | |
766 | /* The other alternative is a destructor. */ | |
767 | else | |
768 | destructor = 1; | |
769 | ||
770 | /* Output the operation name just once, for the first method | |
771 | that we output. */ | |
772 | if (need_prefix) | |
773 | { | |
774 | fprintf (asmfile, "%s::", IDENTIFIER_POINTER (name)); | |
775 | CHARS (IDENTIFIER_LENGTH (name) + 2); | |
776 | need_prefix = 0; | |
777 | } | |
00fe048c | 778 | } |
3a7587e4 RS |
779 | |
780 | dbxout_type (TREE_TYPE (fndecl), 0, destructor); | |
781 | ||
00fe048c RS |
782 | dbxout_type_method_1 (fndecl, debug_name); |
783 | } | |
784 | putc (';', asmfile); | |
785 | CHARS (1); | |
786 | } | |
787 | } | |
788 | \f | |
789 | /* Output a reference to a type. If the type has not yet been | |
790 | described in the dbx output, output its definition now. | |
791 | For a type already defined, just refer to its definition | |
792 | using the type number. | |
793 | ||
794 | If FULL is nonzero, and the type has been described only with | |
795 | a forward-reference, output the definition now. | |
796 | If FULL is zero in this case, just refer to the forward-reference | |
3a7587e4 RS |
797 | using the number previously allocated. |
798 | ||
799 | If SHOW_ARG_TYPES is nonzero, we output a description of the argument | |
800 | types for a METHOD_TYPE. */ | |
00fe048c RS |
801 | |
802 | static void | |
3a7587e4 | 803 | dbxout_type (type, full, show_arg_types) |
00fe048c RS |
804 | tree type; |
805 | int full; | |
3a7587e4 | 806 | int show_arg_types; |
00fe048c RS |
807 | { |
808 | register tree tem; | |
809 | ||
810 | /* If there was an input error and we don't really have a type, | |
811 | avoid crashing and write something that is at least valid | |
812 | by assuming `int'. */ | |
813 | if (type == error_mark_node) | |
814 | type = integer_type_node; | |
815 | else | |
816 | { | |
817 | type = TYPE_MAIN_VARIANT (type); | |
818 | if (TYPE_NAME (type) | |
819 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
820 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
821 | full = 0; | |
822 | } | |
823 | ||
824 | if (TYPE_SYMTAB_ADDRESS (type) == 0) | |
825 | { | |
826 | /* Type has no dbx number assigned. Assign next available number. */ | |
827 | TYPE_SYMTAB_ADDRESS (type) = next_type_number++; | |
828 | ||
829 | /* Make sure type vector is long enough to record about this type. */ | |
830 | ||
831 | if (next_type_number == typevec_len) | |
832 | { | |
833 | typevec = (enum typestatus *) xrealloc (typevec, typevec_len * 2 * sizeof typevec[0]); | |
834 | bzero (typevec + typevec_len, typevec_len * sizeof typevec[0]); | |
835 | typevec_len *= 2; | |
836 | } | |
837 | } | |
838 | ||
839 | /* Output the number of this type, to refer to it. */ | |
840 | fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (type)); | |
841 | CHARS (3); | |
842 | ||
b372168c MM |
843 | #ifdef DBX_TYPE_DEFINED |
844 | if (DBX_TYPE_DEFINED (type)) | |
845 | return; | |
846 | #endif | |
847 | ||
00fe048c RS |
848 | /* If this type's definition has been output or is now being output, |
849 | that is all. */ | |
850 | ||
851 | switch (typevec[TYPE_SYMTAB_ADDRESS (type)]) | |
852 | { | |
853 | case TYPE_UNSEEN: | |
854 | break; | |
855 | case TYPE_XREF: | |
dad0145a RS |
856 | /* If we have already had a cross reference, |
857 | and either that's all we want or that's the best we could do, | |
858 | don't repeat the cross reference. | |
859 | Sun dbx crashes if we do. */ | |
860 | if (! full || TYPE_SIZE (type) == 0 | |
861 | /* No way in DBX fmt to describe a variable size. */ | |
862 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) | |
00fe048c RS |
863 | return; |
864 | break; | |
865 | case TYPE_DEFINED: | |
866 | return; | |
867 | } | |
868 | ||
869 | #ifdef DBX_NO_XREFS | |
870 | /* For systems where dbx output does not allow the `=xsNAME:' syntax, | |
871 | leave the type-number completely undefined rather than output | |
872 | a cross-reference. */ | |
873 | if (TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE | |
874 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
875 | ||
876 | if ((TYPE_NAME (type) != 0 && !full) | |
877 | || TYPE_SIZE (type) == 0) | |
878 | { | |
879 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF; | |
880 | return; | |
881 | } | |
882 | #endif | |
883 | ||
884 | /* Output a definition now. */ | |
885 | ||
886 | fprintf (asmfile, "="); | |
887 | CHARS (1); | |
888 | ||
889 | /* Mark it as defined, so that if it is self-referent | |
890 | we will not get into an infinite recursion of definitions. */ | |
891 | ||
892 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_DEFINED; | |
893 | ||
894 | switch (TREE_CODE (type)) | |
895 | { | |
896 | case VOID_TYPE: | |
897 | case LANG_TYPE: | |
898 | /* For a void type, just define it as itself; ie, "5=5". | |
899 | This makes us consider it defined | |
900 | without saying what it is. The debugger will make it | |
901 | a void type when the reference is seen, and nothing will | |
902 | ever override that default. */ | |
903 | fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (type)); | |
904 | CHARS (3); | |
905 | break; | |
906 | ||
907 | case INTEGER_TYPE: | |
908 | if (type == char_type_node && ! TREE_UNSIGNED (type)) | |
909 | /* Output the type `char' as a subrange of itself! | |
910 | I don't understand this definition, just copied it | |
911 | from the output of pcc. | |
912 | This used to use `r2' explicitly and we used to | |
913 | take care to make sure that `char' was type number 2. */ | |
914 | fprintf (asmfile, "r%d;0;127;", TYPE_SYMTAB_ADDRESS (type)); | |
915 | #ifdef WINNING_GDB | |
916 | else if (TYPE_PRECISION (type) > BITS_PER_WORD) | |
917 | { | |
918 | /* This used to say `r1' and we used to take care | |
919 | to make sure that `int' was type number 1. */ | |
920 | fprintf (asmfile, "r%d;", TYPE_SYMTAB_ADDRESS (integer_type_node)); | |
921 | print_int_cst_octal (TYPE_MIN_VALUE (type)); | |
922 | fprintf (asmfile, ";"); | |
923 | print_int_cst_octal (TYPE_MAX_VALUE (type)); | |
924 | fprintf (asmfile, ";"); | |
925 | } | |
926 | #endif | |
927 | else | |
928 | /* Output other integer types as subranges of `int'. */ | |
929 | /* This used to say `r1' and we used to take care | |
930 | to make sure that `int' was type number 1. */ | |
931 | fprintf (asmfile, "r%d;%d;%d;", | |
932 | TYPE_SYMTAB_ADDRESS (integer_type_node), | |
933 | TREE_INT_CST_LOW (TYPE_MIN_VALUE (type)), | |
934 | TREE_INT_CST_LOW (TYPE_MAX_VALUE (type))); | |
935 | CHARS (25); | |
936 | break; | |
937 | ||
938 | case REAL_TYPE: | |
939 | /* This used to say `r1' and we used to take care | |
940 | to make sure that `int' was type number 1. */ | |
941 | fprintf (asmfile, "r%d;%d;0;", TYPE_SYMTAB_ADDRESS (integer_type_node), | |
942 | TREE_INT_CST_LOW (size_in_bytes (type))); | |
943 | CHARS (16); | |
944 | break; | |
945 | ||
946 | case ARRAY_TYPE: | |
947 | /* Output "a" followed by a range type definition | |
948 | for the index type of the array | |
949 | followed by a reference to the target-type. | |
950 | ar1;0;N;M for an array of type M and size N. */ | |
951 | /* This used to say `r1' and we used to take care | |
952 | to make sure that `int' was type number 1. */ | |
953 | fprintf (asmfile, "ar%d;0;%d;", TYPE_SYMTAB_ADDRESS (integer_type_node), | |
954 | ||
955 | (TYPE_DOMAIN (type) | |
956 | ? TREE_INT_CST_LOW (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) | |
957 | : -1)); | |
958 | CHARS (17); | |
3a7587e4 | 959 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
960 | break; |
961 | ||
962 | case RECORD_TYPE: | |
963 | case UNION_TYPE: | |
964 | { | |
965 | int i, n_baseclasses = 0; | |
966 | ||
967 | if (TYPE_BINFO (type) != 0 && TYPE_BINFO_BASETYPES (type) != 0) | |
968 | n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type)); | |
969 | ||
970 | /* Output a structure type. */ | |
b372168c | 971 | if ((TYPE_NAME (type) != 0 |
95f2ba07 KR |
972 | #if 0 /* Tiemann says this creates output tha "confuses GDB". |
973 | Too bad the info is so vague. Hope this doesn't lose. */ | |
b372168c MM |
974 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
975 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
95f2ba07 | 976 | #endif |
b372168c | 977 | && !full) |
3a7587e4 RS |
978 | || TYPE_SIZE (type) == 0 |
979 | /* No way in DBX fmt to describe a variable size. */ | |
980 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) | |
00fe048c RS |
981 | { |
982 | /* If the type is just a cross reference, output one | |
983 | and mark the type as partially described. | |
984 | If it later becomes defined, we will output | |
985 | its real definition. | |
986 | If the type has a name, don't nest its definition within | |
987 | another type's definition; instead, output an xref | |
988 | and let the definition come when the name is defined. */ | |
989 | fprintf (asmfile, (TREE_CODE (type) == RECORD_TYPE) ? "xs" : "xu"); | |
990 | CHARS (3); | |
95f2ba07 | 991 | #if 0 /* This assertion is legitimately false in C++. */ |
00fe048c RS |
992 | /* We shouldn't be outputting a reference to a type before its |
993 | definition unless the type has a tag name. | |
994 | A typedef name without a tag name should be impossible. */ | |
995 | if (TREE_CODE (TYPE_NAME (type)) != IDENTIFIER_NODE) | |
996 | abort (); | |
997 | #endif | |
998 | dbxout_type_name (type); | |
999 | fprintf (asmfile, ":"); | |
1000 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF; | |
1001 | break; | |
1002 | } | |
1003 | tem = size_in_bytes (type); | |
1004 | ||
00fe048c RS |
1005 | /* Identify record or union, and print its size. */ |
1006 | fprintf (asmfile, (TREE_CODE (type) == RECORD_TYPE) ? "s%d" : "u%d", | |
1007 | TREE_INT_CST_LOW (tem)); | |
1008 | ||
1009 | if (use_gdb_dbx_extensions) | |
1010 | { | |
1011 | if (n_baseclasses) | |
1012 | { | |
1013 | have_used_extensions = 1; | |
1014 | fprintf (asmfile, "!%d,", n_baseclasses); | |
1015 | CHARS (8); | |
1016 | } | |
1017 | } | |
1018 | for (i = 0; i < n_baseclasses; i++) | |
1019 | { | |
1020 | tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)), i); | |
1021 | if (use_gdb_dbx_extensions) | |
1022 | { | |
1023 | have_used_extensions = 1; | |
1024 | putc (TREE_VIA_VIRTUAL (child) ? '1' | |
1025 | : '0', | |
1026 | asmfile); | |
1027 | putc (TREE_VIA_PUBLIC (child) ? '2' | |
1028 | : '0', | |
1029 | asmfile); | |
1030 | fprintf (asmfile, "%d,", | |
1031 | TREE_INT_CST_LOW (BINFO_OFFSET (child)) * BITS_PER_UNIT); | |
1032 | CHARS (15); | |
3a7587e4 | 1033 | dbxout_type (BINFO_TYPE (child), 0, 0); |
00fe048c RS |
1034 | putc (';', asmfile); |
1035 | } | |
1036 | else | |
1037 | { | |
1038 | /* Print out the base class information with fields | |
1039 | which have the same names at the types they hold. */ | |
1040 | dbxout_type_name (BINFO_TYPE (child)); | |
1041 | putc (':', asmfile); | |
3a7587e4 | 1042 | dbxout_type (BINFO_TYPE (child), full, 0); |
00fe048c RS |
1043 | fprintf (asmfile, ",%d,%d;", |
1044 | TREE_INT_CST_LOW (BINFO_OFFSET (child)) * BITS_PER_UNIT, | |
1045 | TREE_INT_CST_LOW (DECL_SIZE (TYPE_NAME (BINFO_TYPE (child)))) * BITS_PER_UNIT); | |
1046 | CHARS (20); | |
1047 | } | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | CHARS (11); | |
1052 | ||
1053 | /* Write out the field declarations. */ | |
1054 | dbxout_type_fields (type); | |
b372168c | 1055 | if (use_gdb_dbx_extensions && TYPE_METHODS (type) != NULL_TREE) |
00fe048c RS |
1056 | { |
1057 | have_used_extensions = 1; | |
1058 | dbxout_type_methods (type); | |
1059 | } | |
1060 | putc (';', asmfile); | |
1061 | ||
1062 | if (use_gdb_dbx_extensions && TREE_CODE (type) == RECORD_TYPE | |
1063 | /* Avoid the ~ if we don't really need it--it confuses dbx. */ | |
1064 | && TYPE_VFIELD (type)) | |
1065 | { | |
1066 | have_used_extensions = 1; | |
1067 | ||
1068 | /* Tell GDB+ that it may keep reading. */ | |
1069 | putc ('~', asmfile); | |
1070 | ||
1071 | /* We need to write out info about what field this class | |
1072 | uses as its "main" vtable pointer field, because if this | |
1073 | field is inherited from a base class, GDB cannot necessarily | |
1074 | figure out which field it's using in time. */ | |
1075 | if (TYPE_VFIELD (type)) | |
1076 | { | |
1077 | putc ('%', asmfile); | |
3a7587e4 | 1078 | dbxout_type (DECL_FCONTEXT (TYPE_VFIELD (type)), 0, 0); |
00fe048c RS |
1079 | } |
1080 | putc (';', asmfile); | |
1081 | CHARS (3); | |
1082 | } | |
1083 | break; | |
1084 | ||
1085 | case ENUMERAL_TYPE: | |
1086 | if ((TYPE_NAME (type) != 0 && !full | |
1087 | && (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
1088 | && ! DECL_IGNORED_P (TYPE_NAME (type)))) | |
1089 | || TYPE_SIZE (type) == 0) | |
1090 | { | |
1091 | fprintf (asmfile, "xe"); | |
1092 | CHARS (3); | |
1093 | dbxout_type_name (type); | |
1094 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF; | |
1095 | fprintf (asmfile, ":"); | |
1096 | return; | |
1097 | } | |
1098 | putc ('e', asmfile); | |
1099 | CHARS (1); | |
1100 | for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem)) | |
1101 | { | |
1102 | fprintf (asmfile, "%s:%d,", IDENTIFIER_POINTER (TREE_PURPOSE (tem)), | |
1103 | TREE_INT_CST_LOW (TREE_VALUE (tem))); | |
1104 | CHARS (11 + IDENTIFIER_LENGTH (TREE_PURPOSE (tem))); | |
1105 | if (TREE_CHAIN (tem) != 0) | |
1106 | CONTIN; | |
1107 | } | |
1108 | putc (';', asmfile); | |
1109 | CHARS (1); | |
1110 | break; | |
1111 | ||
1112 | case POINTER_TYPE: | |
1113 | putc ('*', asmfile); | |
1114 | CHARS (1); | |
3a7587e4 | 1115 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1116 | break; |
1117 | ||
1118 | case METHOD_TYPE: | |
1119 | if (use_gdb_dbx_extensions) | |
1120 | { | |
1121 | have_used_extensions = 1; | |
1122 | putc ('#', asmfile); | |
1123 | CHARS (1); | |
3a7587e4 | 1124 | if (flag_minimal_debug && !show_arg_types) |
00fe048c | 1125 | { |
3a7587e4 RS |
1126 | /* Normally, just output the return type. |
1127 | The argument types are encoded in the method name. */ | |
00fe048c | 1128 | putc ('#', asmfile); |
3a7587e4 | 1129 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1130 | putc (';', asmfile); |
1131 | CHARS (1); | |
1132 | } | |
1133 | else | |
1134 | { | |
3a7587e4 RS |
1135 | /* When outputing destructors, we need to write |
1136 | the argument types out longhand. */ | |
1137 | dbxout_type (TYPE_METHOD_BASETYPE (type), 0, 0); | |
00fe048c RS |
1138 | putc (',', asmfile); |
1139 | CHARS (1); | |
3a7587e4 | 1140 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1141 | dbxout_args (TYPE_ARG_TYPES (type)); |
1142 | putc (';', asmfile); | |
1143 | CHARS (1); | |
1144 | } | |
1145 | } | |
1146 | else | |
1147 | { | |
1148 | /* Treat it as a function type. */ | |
3a7587e4 | 1149 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1150 | } |
1151 | break; | |
1152 | ||
1153 | case OFFSET_TYPE: | |
1154 | if (use_gdb_dbx_extensions) | |
1155 | { | |
1156 | have_used_extensions = 1; | |
1157 | putc ('@', asmfile); | |
1158 | CHARS (1); | |
3a7587e4 | 1159 | dbxout_type (TYPE_OFFSET_BASETYPE (type), 0, 0); |
00fe048c RS |
1160 | putc (',', asmfile); |
1161 | CHARS (1); | |
3a7587e4 | 1162 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1163 | } |
1164 | else | |
1165 | { | |
1166 | /* Should print as an int, because it is really | |
1167 | just an offset. */ | |
3a7587e4 | 1168 | dbxout_type (integer_type_node, 0, 0); |
00fe048c RS |
1169 | } |
1170 | break; | |
1171 | ||
1172 | case REFERENCE_TYPE: | |
1173 | if (use_gdb_dbx_extensions) | |
1174 | have_used_extensions = 1; | |
1175 | putc (use_gdb_dbx_extensions ? '&' : '*', asmfile); | |
1176 | CHARS (1); | |
3a7587e4 | 1177 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1178 | break; |
1179 | ||
1180 | case FUNCTION_TYPE: | |
1181 | putc ('f', asmfile); | |
1182 | CHARS (1); | |
3a7587e4 | 1183 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1184 | break; |
1185 | ||
1186 | default: | |
1187 | abort (); | |
1188 | } | |
1189 | } | |
1190 | ||
1191 | /* Print the value of integer constant C, in octal, | |
1192 | handling double precision. */ | |
1193 | ||
1194 | static void | |
1195 | print_int_cst_octal (c) | |
1196 | tree c; | |
1197 | { | |
1198 | unsigned int high = TREE_INT_CST_HIGH (c); | |
1199 | unsigned int low = TREE_INT_CST_LOW (c); | |
1200 | int excess = (3 - (HOST_BITS_PER_INT % 3)); | |
1201 | ||
1202 | fprintf (asmfile, "0"); | |
1203 | ||
1204 | if (excess == 3) | |
1205 | { | |
1206 | print_octal (high, HOST_BITS_PER_INT / 3); | |
1207 | print_octal (low, HOST_BITS_PER_INT / 3); | |
1208 | } | |
1209 | else | |
1210 | { | |
1211 | unsigned int beg = high >> excess; | |
1212 | unsigned int middle | |
1213 | = ((high & ((1 << excess) - 1)) << (3 - excess) | |
1214 | | (low >> (HOST_BITS_PER_INT / 3 * 3))); | |
1215 | unsigned int end = low & ((1 << (HOST_BITS_PER_INT / 3 * 3)) - 1); | |
1216 | fprintf (asmfile, "%o%01o", beg, middle); | |
1217 | print_octal (end, HOST_BITS_PER_INT / 3); | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | static void | |
1222 | print_octal (value, digits) | |
1223 | unsigned int value; | |
1224 | int digits; | |
1225 | { | |
1226 | int i; | |
1227 | ||
1228 | for (i = digits - 1; i >= 0; i--) | |
1229 | fprintf (asmfile, "%01o", ((value >> (3 * i)) & 7)); | |
1230 | } | |
1231 | ||
1232 | /* Output the name of type TYPE, with no punctuation. | |
1233 | Such names can be set up either by typedef declarations | |
1234 | or by struct, enum and union tags. */ | |
1235 | ||
1236 | static void | |
1237 | dbxout_type_name (type) | |
1238 | register tree type; | |
1239 | { | |
1240 | tree t; | |
1241 | if (TYPE_NAME (type) == 0) | |
1242 | abort (); | |
1243 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
1244 | { | |
1245 | t = TYPE_NAME (type); | |
1246 | } | |
1247 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
1248 | { | |
1249 | t = DECL_NAME (TYPE_NAME (type)); | |
1250 | } | |
1251 | else | |
1252 | abort (); | |
1253 | ||
1254 | fprintf (asmfile, "%s", IDENTIFIER_POINTER (t)); | |
1255 | CHARS (IDENTIFIER_LENGTH (t)); | |
1256 | } | |
1257 | \f | |
1258 | /* Output a .stabs for the symbol defined by DECL, | |
1259 | which must be a ..._DECL node in the normal namespace. | |
1260 | It may be a CONST_DECL, a FUNCTION_DECL, a PARM_DECL or a VAR_DECL. | |
1261 | LOCAL is nonzero if the scope is less than the entire file. */ | |
1262 | ||
1263 | void | |
1264 | dbxout_symbol (decl, local) | |
1265 | tree decl; | |
1266 | int local; | |
1267 | { | |
1268 | int letter = 0; | |
1269 | tree type = TREE_TYPE (decl); | |
1270 | tree context = NULL_TREE; | |
1271 | int regno = -1; | |
1272 | ||
1273 | /* Cast avoids warning in old compilers. */ | |
1274 | current_sym_code = (STAB_CODE_TYPE) 0; | |
1275 | current_sym_value = 0; | |
1276 | current_sym_addr = 0; | |
1277 | ||
1278 | /* Ignore nameless syms, but don't ignore type tags. */ | |
1279 | ||
1280 | if ((DECL_NAME (decl) == 0 && TREE_CODE (decl) != TYPE_DECL) | |
1281 | || DECL_IGNORED_P (decl)) | |
1282 | return; | |
1283 | ||
1284 | dbxout_prepare_symbol (decl); | |
1285 | ||
1286 | /* The output will always start with the symbol name, | |
1287 | so always count that in the length-output-so-far. */ | |
1288 | ||
1289 | if (DECL_NAME (decl) != 0) | |
1290 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (decl)); | |
1291 | ||
1292 | switch (TREE_CODE (decl)) | |
1293 | { | |
1294 | case CONST_DECL: | |
1295 | /* Enum values are defined by defining the enum type. */ | |
1296 | break; | |
1297 | ||
1298 | case FUNCTION_DECL: | |
1299 | if (DECL_RTL (decl) == 0) | |
1300 | return; | |
1301 | if (TREE_EXTERNAL (decl)) | |
1302 | break; | |
1303 | /* Don't mention a nested function under its parent. */ | |
1304 | context = decl_function_context (decl); | |
1305 | if (context == current_function_decl) | |
1306 | break; | |
1307 | if (GET_CODE (DECL_RTL (decl)) != MEM | |
1308 | || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF) | |
1309 | break; | |
1310 | FORCE_TEXT; | |
1311 | ||
1312 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, | |
1313 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), | |
1314 | TREE_PUBLIC (decl) ? 'F' : 'f'); | |
1315 | ||
1316 | current_sym_code = N_FUN; | |
1317 | current_sym_addr = XEXP (DECL_RTL (decl), 0); | |
1318 | ||
1319 | if (TREE_TYPE (type)) | |
3a7587e4 | 1320 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c | 1321 | else |
3a7587e4 | 1322 | dbxout_type (void_type_node, 0, 0); |
00fe048c RS |
1323 | |
1324 | /* For a nested function, when that function is compiled, | |
1325 | mention the containing function name | |
1326 | as well as (since dbx wants it) our own assembler-name. */ | |
1327 | if (context != 0) | |
1328 | fprintf (asmfile, ",%s,%s", | |
1329 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), | |
1330 | IDENTIFIER_POINTER (DECL_NAME (context))); | |
1331 | ||
1332 | dbxout_finish_symbol (decl); | |
1333 | break; | |
1334 | ||
1335 | case TYPE_DECL: | |
1336 | #if 0 | |
1337 | /* This seems all wrong. Outputting most kinds of types gives no name | |
1338 | at all. A true definition gives no name; a cross-ref for a | |
1339 | structure can give the tag name, but not a type name. | |
1340 | It seems that no typedef name is defined by outputting a type. */ | |
1341 | ||
1342 | /* If this typedef name was defined by outputting the type, | |
1343 | don't duplicate it. */ | |
1344 | if (typevec[TYPE_SYMTAB_ADDRESS (type)] == TYPE_DEFINED | |
1345 | && TYPE_NAME (TREE_TYPE (decl)) == decl) | |
1346 | return; | |
1347 | #endif | |
1348 | /* Don't output the same typedef twice. | |
1349 | And don't output what language-specific stuff doesn't want output. */ | |
1350 | if (TREE_ASM_WRITTEN (decl) || DECL_IGNORED_P (decl)) | |
1351 | return; | |
1352 | ||
1353 | FORCE_TEXT; | |
1354 | ||
a823f1d8 RS |
1355 | { |
1356 | int tag_needed = 1; | |
25bdb910 | 1357 | |
a823f1d8 RS |
1358 | if (DECL_NAME (decl)) |
1359 | { | |
1360 | /* Nonzero means we must output a tag as well as a typedef. */ | |
1361 | tag_needed = 0; | |
00fe048c | 1362 | |
a823f1d8 RS |
1363 | /* Output typedef name. */ |
1364 | fprintf (asmfile, "%s \"%s:", ASM_STABS_OP, | |
1365 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
25bdb910 | 1366 | |
a823f1d8 RS |
1367 | /* Short cut way to output a tag also. */ |
1368 | if ((TREE_CODE (type) == RECORD_TYPE | |
1369 | || TREE_CODE (type) == UNION_TYPE) | |
1370 | && TYPE_NAME (type) == decl) | |
1371 | { | |
1372 | if (use_gdb_dbx_extensions && have_used_extensions) | |
1373 | { | |
1374 | putc ('T', asmfile); | |
1375 | TREE_ASM_WRITTEN (TYPE_NAME (type)) = 1; | |
1376 | } | |
1377 | else | |
1378 | tag_needed = 1; | |
1379 | } | |
00fe048c | 1380 | |
a823f1d8 RS |
1381 | putc ('t', asmfile); |
1382 | current_sym_code = DBX_DECL_STABS_CODE; | |
25bdb910 | 1383 | |
a823f1d8 RS |
1384 | dbxout_type (type, 1, 0); |
1385 | dbxout_finish_symbol (decl); | |
1386 | } | |
00fe048c | 1387 | |
a823f1d8 RS |
1388 | if (tag_needed && TYPE_NAME (type) != 0 |
1389 | && !TREE_ASM_WRITTEN (TYPE_NAME (type))) | |
1390 | { | |
1391 | /* For a TYPE_DECL with no name, but the type has a name, | |
1392 | output a tag. | |
1393 | This is what represents `struct foo' with no typedef. */ | |
1394 | /* In C++, the name of a type is the corresponding typedef. | |
1395 | In C, it is an IDENTIFIER_NODE. */ | |
1396 | tree name = TYPE_NAME (type); | |
1397 | if (TREE_CODE (name) == TYPE_DECL) | |
1398 | name = DECL_NAME (name); | |
1399 | ||
1400 | current_sym_code = DBX_DECL_STABS_CODE; | |
1401 | current_sym_value = 0; | |
1402 | current_sym_addr = 0; | |
1403 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (name); | |
1404 | ||
1405 | fprintf (asmfile, "%s \"%s:T", ASM_STABS_OP, | |
1406 | IDENTIFIER_POINTER (name)); | |
1407 | dbxout_type (type, 1, 0); | |
1408 | dbxout_finish_symbol (0); | |
1409 | } | |
1410 | ||
1411 | /* Prevent duplicate output of a typedef. */ | |
1412 | TREE_ASM_WRITTEN (decl) = 1; | |
1413 | break; | |
1414 | } | |
00fe048c RS |
1415 | |
1416 | case PARM_DECL: | |
1417 | /* Parm decls go in their own separate chains | |
1418 | and are output by dbxout_reg_parms and dbxout_parms. */ | |
1419 | abort (); | |
1420 | ||
1421 | case RESULT_DECL: | |
1422 | /* Named return value, treat like a VAR_DECL. */ | |
1423 | case VAR_DECL: | |
1424 | if (DECL_RTL (decl) == 0) | |
1425 | return; | |
1426 | /* Don't mention a variable that is external. | |
1427 | Let the file that defines it describe it. */ | |
1428 | if (TREE_EXTERNAL (decl)) | |
1429 | break; | |
1430 | ||
1431 | /* If the variable is really a constant | |
1432 | and not written in memory, inform the debugger. */ | |
1433 | if (TREE_STATIC (decl) && TREE_READONLY (decl) | |
1434 | && DECL_INITIAL (decl) != 0 | |
1435 | && ! TREE_ASM_WRITTEN (decl) | |
1436 | && (DECL_FIELD_CONTEXT (decl) == NULL_TREE | |
1437 | || TREE_CODE (DECL_FIELD_CONTEXT (decl)) == BLOCK)) | |
1438 | { | |
1439 | if (TREE_PUBLIC (decl) == 0) | |
1440 | { | |
1441 | /* The sun4 assembler does not grok this. */ | |
1442 | char *name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
1443 | if (TREE_CODE (TREE_TYPE (decl)) == INTEGER_TYPE | |
1444 | || TREE_CODE (TREE_TYPE (decl)) == ENUMERAL_TYPE) | |
1445 | { | |
1446 | int ival = TREE_INT_CST_LOW (DECL_INITIAL (decl)); | |
1447 | #ifdef DBX_OUTPUT_CONSTANT_SYMBOL | |
1448 | DBX_OUTPUT_CONSTANT_SYMBOL (asmfile, name, ival); | |
1449 | #else | |
1450 | fprintf (asmfile, "%s \"%s:c=i%d\",0x%x,0,0,0\n", | |
1451 | ASM_STABS_OP, name, ival, N_LSYM); | |
1452 | #endif | |
1453 | return; | |
1454 | } | |
1455 | else if (TREE_CODE (TREE_TYPE (decl)) == REAL_TYPE) | |
1456 | { | |
1457 | /* don't know how to do this yet. */ | |
1458 | } | |
1459 | break; | |
1460 | } | |
1461 | /* else it is something we handle like a normal variable. */ | |
1462 | } | |
1463 | ||
1464 | DECL_RTL (decl) = eliminate_regs (DECL_RTL (decl)); | |
1465 | #ifdef LEAF_REG_REMAP | |
1466 | if (leaf_function) | |
1467 | leaf_renumber_regs_insn (DECL_RTL (decl)); | |
1468 | #endif | |
1469 | ||
1470 | /* Don't mention a variable at all | |
1471 | if it was completely optimized into nothingness. | |
1472 | ||
1473 | If DECL was from an inline function, then it's rtl | |
1474 | is not identically the rtl that was used in this | |
1475 | particular compilation. */ | |
1476 | if (GET_CODE (DECL_RTL (decl)) == REG) | |
1477 | { | |
1478 | regno = REGNO (DECL_RTL (decl)); | |
1479 | if (regno >= FIRST_PSEUDO_REGISTER) | |
1480 | regno = reg_renumber[REGNO (DECL_RTL (decl))]; | |
1481 | if (regno < 0) | |
1482 | break; | |
1483 | } | |
1484 | else if (GET_CODE (DECL_RTL (decl)) == SUBREG) | |
1485 | { | |
1486 | rtx value = DECL_RTL (decl); | |
1487 | int offset = 0; | |
1488 | while (GET_CODE (value) == SUBREG) | |
1489 | { | |
1490 | offset += SUBREG_WORD (value); | |
1491 | value = SUBREG_REG (value); | |
1492 | } | |
1493 | if (GET_CODE (value) == REG) | |
1494 | { | |
1495 | regno = REGNO (value); | |
1496 | if (regno >= FIRST_PSEUDO_REGISTER) | |
1497 | regno = reg_renumber[REGNO (value)]; | |
1498 | if (regno >= 0) | |
1499 | regno += offset; | |
1500 | } | |
1501 | } | |
1502 | ||
1503 | /* The kind-of-variable letter depends on where | |
1504 | the variable is and on the scope of its name: | |
1505 | G and N_GSYM for static storage and global scope, | |
1506 | S for static storage and file scope, | |
1507 | V for static storage and local scope, | |
1508 | for those two, use N_LCSYM if data is in bss segment, | |
1509 | N_STSYM if in data segment, N_FUN otherwise. | |
1510 | (We used N_FUN originally, then changed to N_STSYM | |
1511 | to please GDB. However, it seems that confused ld. | |
1512 | Now GDB has been fixed to like N_FUN, says Kingdon.) | |
1513 | no letter at all, and N_LSYM, for auto variable, | |
1514 | r and N_RSYM for register variable. */ | |
1515 | ||
1516 | if (GET_CODE (DECL_RTL (decl)) == MEM | |
1517 | && GET_CODE (XEXP (DECL_RTL (decl), 0)) == SYMBOL_REF) | |
1518 | { | |
1519 | if (TREE_PUBLIC (decl)) | |
1520 | { | |
1521 | letter = 'G'; | |
1522 | current_sym_code = N_GSYM; | |
1523 | } | |
1524 | else | |
1525 | { | |
1526 | current_sym_addr = XEXP (DECL_RTL (decl), 0); | |
1527 | ||
f543676f | 1528 | letter = decl_function_context (decl) ? 'V' : 'S'; |
00fe048c RS |
1529 | |
1530 | if (!DECL_INITIAL (decl)) | |
1531 | current_sym_code = N_LCSYM; | |
1532 | else if (TREE_READONLY (decl) && ! TREE_THIS_VOLATILE (decl)) | |
1533 | /* This is not quite right, but it's the closest | |
1534 | of all the codes that Unix defines. */ | |
b372168c | 1535 | current_sym_code = DBX_STATIC_CONST_VAR_CODE; |
00fe048c RS |
1536 | else |
1537 | { | |
1538 | /* Ultrix `as' seems to need this. */ | |
1539 | #ifdef DBX_STATIC_STAB_DATA_SECTION | |
1540 | data_section (); | |
1541 | #endif | |
1542 | current_sym_code = N_STSYM; | |
1543 | } | |
1544 | } | |
1545 | } | |
1546 | else if (regno >= 0) | |
1547 | { | |
1548 | letter = 'r'; | |
1549 | current_sym_code = N_RSYM; | |
1550 | current_sym_value = DBX_REGISTER_NUMBER (regno); | |
1551 | } | |
1552 | else if (GET_CODE (DECL_RTL (decl)) == SUBREG) | |
1553 | { | |
1554 | rtx value = DECL_RTL (decl); | |
1555 | int offset = 0; | |
1556 | while (GET_CODE (value) == SUBREG) | |
1557 | { | |
1558 | offset += SUBREG_WORD (value); | |
1559 | value = SUBREG_REG (value); | |
1560 | } | |
1561 | letter = 'r'; | |
1562 | current_sym_code = N_RSYM; | |
1563 | current_sym_value = DBX_REGISTER_NUMBER (REGNO (value) + offset); | |
1564 | } | |
1565 | else if (GET_CODE (DECL_RTL (decl)) == MEM | |
1566 | && (GET_CODE (XEXP (DECL_RTL (decl), 0)) == MEM | |
1567 | || (GET_CODE (XEXP (DECL_RTL (decl), 0)) == REG | |
1568 | && REGNO (XEXP (DECL_RTL (decl), 0)) != FRAME_POINTER_REGNUM))) | |
1569 | /* If the value is indirect by memory or by a register | |
1570 | that isn't the frame pointer | |
1571 | then it means the object is variable-sized and address through | |
1572 | that register or stack slot. DBX has no way to represent this | |
1573 | so all we can do is output the variable as a pointer. | |
1574 | If it's not a parameter, ignore it. | |
1575 | (VAR_DECLs like this can be made by integrate.c.) */ | |
1576 | { | |
1577 | if (GET_CODE (XEXP (DECL_RTL (decl), 0)) == REG) | |
1578 | { | |
1579 | letter = 'r'; | |
1580 | current_sym_code = N_RSYM; | |
1581 | current_sym_value = DBX_REGISTER_NUMBER (REGNO (XEXP (DECL_RTL (decl), 0))); | |
1582 | } | |
1583 | else | |
1584 | { | |
1585 | current_sym_code = N_LSYM; | |
1586 | /* DECL_RTL looks like (MEM (MEM (PLUS (REG...) (CONST_INT...)))). | |
1587 | We want the value of that CONST_INT. */ | |
1588 | current_sym_value | |
1589 | = DEBUGGER_AUTO_OFFSET (XEXP (XEXP (DECL_RTL (decl), 0), 0)); | |
1590 | } | |
1591 | ||
1592 | /* Effectively do build_pointer_type, but don't cache this type, | |
1593 | since it might be temporary whereas the type it points to | |
1594 | might have been saved for inlining. */ | |
b113bb39 RS |
1595 | /* Don't use REFERENCE_TYPE because dbx can't handle that. */ |
1596 | type = make_node (POINTER_TYPE); | |
00fe048c RS |
1597 | TREE_TYPE (type) = TREE_TYPE (decl); |
1598 | } | |
1599 | else if (GET_CODE (DECL_RTL (decl)) == MEM | |
1600 | && GET_CODE (XEXP (DECL_RTL (decl), 0)) == REG) | |
1601 | { | |
1602 | current_sym_code = N_LSYM; | |
1603 | current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (DECL_RTL (decl), 0)); | |
1604 | } | |
1605 | else if (GET_CODE (DECL_RTL (decl)) == MEM | |
1606 | && GET_CODE (XEXP (DECL_RTL (decl), 0)) == PLUS | |
1607 | && GET_CODE (XEXP (XEXP (DECL_RTL (decl), 0), 1)) == CONST_INT) | |
1608 | { | |
1609 | current_sym_code = N_LSYM; | |
1610 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) | |
1611 | We want the value of that CONST_INT. */ | |
1612 | current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (DECL_RTL (decl), 0)); | |
1613 | } | |
b372168c MM |
1614 | else if (GET_CODE (DECL_RTL (decl)) == MEM |
1615 | && GET_CODE (XEXP (DECL_RTL (decl), 0)) == CONST) | |
1616 | { | |
1617 | /* Handle an obscure case which can arise when optimizing and | |
1618 | when there are few available registers. (This is *always* | |
1619 | the case for i386/i486 targets). The DECL_RTL looks like | |
1620 | (MEM (CONST ...)) even though this variable is a local `auto' | |
1621 | or a local `register' variable. In effect, what has happened | |
1622 | is that the reload pass has seen that all assignments and | |
1623 | references for one such a local variable can be replaced by | |
1624 | equivalent assignments and references to some static storage | |
1625 | variable, thereby avoiding the need for a register. In such | |
1626 | cases we're forced to lie to debuggers and tell them that | |
1627 | this variable was itself `static'. */ | |
1628 | current_sym_code = N_LCSYM; | |
1629 | letter = 'V'; | |
1630 | current_sym_addr = XEXP (XEXP (DECL_RTL (decl), 0), 0); | |
1631 | } | |
00fe048c RS |
1632 | else |
1633 | /* Address might be a MEM, when DECL is a variable-sized object. | |
1634 | Or it might be const0_rtx, meaning previous passes | |
1635 | want us to ignore this variable. */ | |
1636 | break; | |
1637 | ||
1638 | /* Ok, start a symtab entry and output the variable name. */ | |
1639 | FORCE_TEXT; | |
b372168c MM |
1640 | |
1641 | #ifdef DBX_STATIC_BLOCK_START | |
1642 | DBX_STATIC_BLOCK_START (asmfile, current_sym_code); | |
1643 | #endif | |
1644 | ||
00fe048c RS |
1645 | /* One slight hitch: if this is a VAR_DECL which is a static |
1646 | class member, we must put out the mangled name instead of the | |
1647 | DECL_NAME. */ | |
1648 | { | |
1649 | char *name; | |
1650 | /* Note also that static member (variable) names DO NOT begin | |
1651 | with underscores in .stabs directives. */ | |
1652 | if (DECL_LANG_SPECIFIC (decl)) | |
3a7587e4 | 1653 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); |
00fe048c RS |
1654 | else |
1655 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
1656 | fprintf (asmfile, "%s \"%s:", ASM_STABS_OP, name); | |
1657 | } | |
1658 | if (letter) putc (letter, asmfile); | |
3a7587e4 | 1659 | dbxout_type (type, 0, 0); |
00fe048c | 1660 | dbxout_finish_symbol (decl); |
b372168c MM |
1661 | |
1662 | #ifdef DBX_STATIC_BLOCK_END | |
1663 | DBX_STATIC_BLOCK_END (asmfile, current_sym_code); | |
1664 | #endif | |
00fe048c RS |
1665 | break; |
1666 | } | |
1667 | } | |
1668 | ||
1669 | static void | |
1670 | dbxout_prepare_symbol (decl) | |
1671 | tree decl; | |
1672 | { | |
1673 | #ifdef WINNING_GDB | |
1674 | char *filename = DECL_SOURCE_FILE (decl); | |
1675 | ||
1676 | dbxout_source_file (asmfile, filename); | |
1677 | #endif | |
1678 | } | |
1679 | ||
1680 | static void | |
1681 | dbxout_finish_symbol (sym) | |
1682 | tree sym; | |
1683 | { | |
b372168c MM |
1684 | #ifdef DBX_FINISH_SYMBOL |
1685 | DBX_FINISH_SYMBOL (sym); | |
1686 | #else | |
00fe048c RS |
1687 | int line = 0; |
1688 | #ifdef WINNING_GDB | |
1689 | if (sym != 0) | |
1690 | line = DECL_SOURCE_LINE (sym); | |
1691 | #endif | |
b372168c | 1692 | |
00fe048c RS |
1693 | fprintf (asmfile, "\",%d,0,%d,", current_sym_code, line); |
1694 | if (current_sym_addr) | |
1695 | output_addr_const (asmfile, current_sym_addr); | |
1696 | else | |
1697 | fprintf (asmfile, "%d", current_sym_value); | |
1698 | putc ('\n', asmfile); | |
b372168c | 1699 | #endif |
00fe048c RS |
1700 | } |
1701 | ||
1702 | /* Output definitions of all the decls in a chain. */ | |
1703 | ||
b372168c | 1704 | void |
00fe048c RS |
1705 | dbxout_syms (syms) |
1706 | tree syms; | |
1707 | { | |
1708 | while (syms) | |
1709 | { | |
1710 | dbxout_symbol (syms, 1); | |
1711 | syms = TREE_CHAIN (syms); | |
1712 | } | |
1713 | } | |
1714 | \f | |
1715 | /* The following two functions output definitions of function parameters. | |
1716 | Each parameter gets a definition locating it in the parameter list. | |
1717 | Each parameter that is a register variable gets a second definition | |
1718 | locating it in the register. | |
1719 | ||
1720 | Printing or argument lists in gdb uses the definitions that | |
1721 | locate in the parameter list. But reference to the variable in | |
1722 | expressions uses preferentially the definition as a register. */ | |
1723 | ||
1724 | /* Output definitions, referring to storage in the parmlist, | |
1725 | of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ | |
1726 | ||
b372168c | 1727 | void |
00fe048c RS |
1728 | dbxout_parms (parms) |
1729 | tree parms; | |
1730 | { | |
1731 | for (; parms; parms = TREE_CHAIN (parms)) | |
1732 | if (DECL_NAME (parms) && TREE_TYPE (parms) != error_mark_node) | |
1733 | { | |
1734 | dbxout_prepare_symbol (parms); | |
1735 | ||
1736 | /* Perform any necessary register eliminations on the parameter's rtl, | |
1737 | so that the debugging output will be accurate. */ | |
1738 | DECL_INCOMING_RTL (parms) | |
1739 | = eliminate_regs (DECL_INCOMING_RTL (parms), 0, 0); | |
1740 | DECL_RTL (parms) = eliminate_regs (DECL_RTL (parms), 0, 0); | |
1741 | #ifdef LEAF_REG_REMAP | |
1742 | if (leaf_function) | |
1743 | { | |
1744 | leaf_renumber_regs_insn (DECL_INCOMING_RTL (parms)); | |
1745 | leaf_renumber_regs_insn (DECL_RTL (parms)); | |
1746 | } | |
1747 | #endif | |
1748 | ||
1749 | if (PARM_PASSED_IN_MEMORY (parms)) | |
1750 | { | |
1751 | rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0); | |
1752 | ||
1753 | /* ??? Here we assume that the parm address is indexed | |
1754 | off the frame pointer or arg pointer. | |
1755 | If that is not true, we produce meaningless results, | |
1756 | but do not crash. */ | |
1757 | if (GET_CODE (addr) == PLUS | |
1758 | && GET_CODE (XEXP (addr, 1)) == CONST_INT) | |
1759 | current_sym_value = INTVAL (XEXP (addr, 1)); | |
1760 | else | |
1761 | current_sym_value = 0; | |
1762 | ||
1763 | current_sym_code = N_PSYM; | |
1764 | current_sym_addr = 0; | |
1765 | ||
1766 | FORCE_TEXT; | |
1767 | if (DECL_NAME (parms)) | |
1768 | { | |
1769 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms)); | |
1770 | ||
1771 | fprintf (asmfile, "%s \"%s:p", ASM_STABS_OP, | |
1772 | IDENTIFIER_POINTER (DECL_NAME (parms))); | |
1773 | } | |
1774 | else | |
1775 | { | |
1776 | current_sym_nchars = 8; | |
1777 | fprintf (asmfile, "%s \"(anon):p", ASM_STABS_OP); | |
1778 | } | |
1779 | ||
1780 | if (GET_CODE (DECL_RTL (parms)) == REG | |
1781 | && REGNO (DECL_RTL (parms)) >= 0 | |
1782 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) | |
3a7587e4 | 1783 | dbxout_type (DECL_ARG_TYPE (parms), 0, 0); |
00fe048c RS |
1784 | else |
1785 | { | |
1786 | int original_value = current_sym_value; | |
1787 | ||
1788 | /* This is the case where the parm is passed as an int or double | |
1789 | and it is converted to a char, short or float and stored back | |
1790 | in the parmlist. In this case, describe the parm | |
1791 | with the variable's declared type, and adjust the address | |
1792 | if the least significant bytes (which we are using) are not | |
1793 | the first ones. */ | |
1794 | #if BYTES_BIG_ENDIAN | |
1795 | if (TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
1796 | current_sym_value += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
1797 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
1798 | #endif | |
1799 | ||
1800 | if (GET_CODE (DECL_RTL (parms)) == MEM | |
1801 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
1802 | && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT | |
1803 | && INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == current_sym_value) | |
3a7587e4 | 1804 | dbxout_type (TREE_TYPE (parms), 0, 0); |
00fe048c RS |
1805 | else |
1806 | { | |
1807 | current_sym_value = original_value; | |
3a7587e4 | 1808 | dbxout_type (DECL_ARG_TYPE (parms), 0, 0); |
00fe048c RS |
1809 | } |
1810 | } | |
1811 | current_sym_value = DEBUGGER_ARG_OFFSET (current_sym_value, addr); | |
1812 | dbxout_finish_symbol (parms); | |
1813 | } | |
1814 | else if (GET_CODE (DECL_RTL (parms)) == REG) | |
1815 | { | |
1816 | rtx best_rtl; | |
b372168c | 1817 | char regparm_letter; |
00fe048c RS |
1818 | /* Parm passed in registers and lives in registers or nowhere. */ |
1819 | ||
b372168c MM |
1820 | current_sym_code = DBX_REGPARM_STABS_CODE; |
1821 | regparm_letter = DBX_REGPARM_STABS_LETTER; | |
00fe048c RS |
1822 | current_sym_addr = 0; |
1823 | ||
1824 | /* If parm lives in a register, use that register; | |
1825 | pretend the parm was passed there. It would be more consistent | |
1826 | to describe the register where the parm was passed, | |
1827 | but in practice that register usually holds something else. */ | |
1828 | if (REGNO (DECL_RTL (parms)) >= 0 | |
1829 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) | |
1830 | best_rtl = DECL_RTL (parms); | |
1831 | /* If the parm lives nowhere, | |
1832 | use the register where it was passed. */ | |
1833 | else | |
1834 | best_rtl = DECL_INCOMING_RTL (parms); | |
1835 | current_sym_value = DBX_REGISTER_NUMBER (REGNO (best_rtl)); | |
1836 | ||
1837 | FORCE_TEXT; | |
1838 | if (DECL_NAME (parms)) | |
1839 | { | |
1840 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms)); | |
b372168c MM |
1841 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
1842 | IDENTIFIER_POINTER (DECL_NAME (parms)), | |
1843 | regparm_letter); | |
00fe048c RS |
1844 | } |
1845 | else | |
1846 | { | |
1847 | current_sym_nchars = 8; | |
b372168c MM |
1848 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, |
1849 | regparm_letter); | |
00fe048c RS |
1850 | } |
1851 | ||
3a7587e4 | 1852 | dbxout_type (DECL_ARG_TYPE (parms), 0, 0); |
00fe048c RS |
1853 | dbxout_finish_symbol (parms); |
1854 | } | |
dad0145a RS |
1855 | else if (GET_CODE (DECL_RTL (parms)) == MEM |
1856 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG | |
1857 | && rtx_equal_p (XEXP (DECL_RTL (parms), 0), | |
1858 | DECL_INCOMING_RTL (parms))) | |
1859 | { | |
1860 | /* Parm was passed via invisible reference. | |
1861 | That is, its address was passed in a register. | |
1862 | Output it as if it lived in that register. | |
1863 | The debugger will know from the type | |
1864 | that it was actually passed by invisible reference. */ | |
1865 | ||
1866 | char regparm_letter; | |
1867 | /* Parm passed in registers and lives in registers or nowhere. */ | |
1868 | ||
1869 | current_sym_code = DBX_REGPARM_STABS_CODE; | |
1870 | regparm_letter = DBX_REGPARM_STABS_LETTER; | |
1871 | ||
1872 | /* DECL_RTL looks like (MEM (REG...). Get the register number. */ | |
1873 | current_sym_value = REGNO (XEXP (DECL_RTL (parms), 0)); | |
1874 | current_sym_addr = 0; | |
1875 | ||
1876 | FORCE_TEXT; | |
1877 | if (DECL_NAME (parms)) | |
1878 | { | |
1879 | current_sym_nchars = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms))); | |
1880 | ||
1881 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, | |
1882 | IDENTIFIER_POINTER (DECL_NAME (parms)), | |
1883 | DBX_REGPARM_STABS_LETTER); | |
1884 | } | |
1885 | else | |
1886 | { | |
1887 | current_sym_nchars = 8; | |
1888 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, | |
1889 | DBX_REGPARM_STABS_LETTER); | |
1890 | } | |
1891 | ||
1892 | dbxout_type (TREE_TYPE (parms), 0, 0); | |
1893 | dbxout_finish_symbol (parms); | |
1894 | } | |
00fe048c RS |
1895 | else if (GET_CODE (DECL_RTL (parms)) == MEM |
1896 | && XEXP (DECL_RTL (parms), 0) != const0_rtx) | |
1897 | { | |
1898 | /* Parm was passed in registers but lives on the stack. */ | |
1899 | ||
1900 | current_sym_code = N_PSYM; | |
1901 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), | |
1902 | in which case we want the value of that CONST_INT, | |
1903 | or (MEM (REG ...)) or (MEM (MEM ...)), | |
1904 | in which case we use a value of zero. */ | |
1905 | if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG | |
1906 | || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM) | |
1907 | current_sym_value = 0; | |
1908 | else | |
1909 | current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); | |
1910 | current_sym_addr = 0; | |
1911 | ||
1912 | FORCE_TEXT; | |
1913 | if (DECL_NAME (parms)) | |
1914 | { | |
1915 | current_sym_nchars = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms))); | |
1916 | ||
1917 | fprintf (asmfile, "%s \"%s:p", ASM_STABS_OP, | |
1918 | IDENTIFIER_POINTER (DECL_NAME (parms))); | |
1919 | } | |
1920 | else | |
1921 | { | |
1922 | current_sym_nchars = 8; | |
1923 | fprintf (asmfile, "%s \"(anon):p", ASM_STABS_OP); | |
1924 | } | |
1925 | ||
1926 | current_sym_value | |
1927 | = DEBUGGER_ARG_OFFSET (current_sym_value, | |
1928 | XEXP (DECL_RTL (parms), 0)); | |
3a7587e4 | 1929 | dbxout_type (TREE_TYPE (parms), 0, 0); |
00fe048c RS |
1930 | dbxout_finish_symbol (parms); |
1931 | } | |
1932 | } | |
1933 | } | |
1934 | ||
1935 | /* Output definitions for the places where parms live during the function, | |
1936 | when different from where they were passed, when the parms were passed | |
1937 | in memory. | |
1938 | ||
1939 | It is not useful to do this for parms passed in registers | |
1940 | that live during the function in different registers, because it is | |
1941 | impossible to look in the passed register for the passed value, | |
1942 | so we use the within-the-function register to begin with. | |
1943 | ||
1944 | PARMS is a chain of PARM_DECL nodes. */ | |
1945 | ||
b372168c | 1946 | void |
00fe048c RS |
1947 | dbxout_reg_parms (parms) |
1948 | tree parms; | |
1949 | { | |
1950 | for (; parms; parms = TREE_CHAIN (parms)) | |
1951 | if (DECL_NAME (parms)) | |
1952 | { | |
1953 | dbxout_prepare_symbol (parms); | |
1954 | ||
1955 | /* Report parms that live in registers during the function | |
1956 | but were passed in memory. */ | |
1957 | if (GET_CODE (DECL_RTL (parms)) == REG | |
1958 | && REGNO (DECL_RTL (parms)) >= 0 | |
1959 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER | |
1960 | && PARM_PASSED_IN_MEMORY (parms)) | |
1961 | { | |
1962 | current_sym_code = N_RSYM; | |
1963 | current_sym_value = DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms))); | |
1964 | current_sym_addr = 0; | |
1965 | ||
1966 | FORCE_TEXT; | |
1967 | if (DECL_NAME (parms)) | |
1968 | { | |
1969 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms)); | |
1970 | fprintf (asmfile, "%s \"%s:r", ASM_STABS_OP, | |
1971 | IDENTIFIER_POINTER (DECL_NAME (parms))); | |
1972 | } | |
1973 | else | |
1974 | { | |
1975 | current_sym_nchars = 8; | |
1976 | fprintf (asmfile, "%s \"(anon):r", ASM_STABS_OP); | |
1977 | } | |
3a7587e4 | 1978 | dbxout_type (TREE_TYPE (parms), 0, 0); |
00fe048c RS |
1979 | dbxout_finish_symbol (parms); |
1980 | } | |
1981 | /* Report parms that live in memory but not where they were passed. */ | |
1982 | else if (GET_CODE (DECL_RTL (parms)) == MEM | |
1983 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
1984 | && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT | |
1985 | && PARM_PASSED_IN_MEMORY (parms) | |
1986 | && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) | |
1987 | { | |
1988 | #if 0 /* ??? It is not clear yet what should replace this. */ | |
1989 | int offset = DECL_OFFSET (parms) / BITS_PER_UNIT; | |
1990 | /* A parm declared char is really passed as an int, | |
1991 | so it occupies the least significant bytes. | |
1992 | On a big-endian machine those are not the low-numbered ones. */ | |
1993 | #if BYTES_BIG_ENDIAN | |
1994 | if (offset != -1 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
1995 | offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
1996 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
1997 | #endif | |
1998 | if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...} | |
1999 | #endif | |
2000 | current_sym_code = N_LSYM; | |
2001 | current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (DECL_RTL (parms), 0)); | |
2002 | current_sym_addr = 0; | |
2003 | FORCE_TEXT; | |
2004 | if (DECL_NAME (parms)) | |
2005 | { | |
2006 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms)); | |
2007 | fprintf (asmfile, "%s \"%s:", ASM_STABS_OP, | |
2008 | IDENTIFIER_POINTER (DECL_NAME (parms))); | |
2009 | } | |
2010 | else | |
2011 | { | |
2012 | current_sym_nchars = 8; | |
2013 | fprintf (asmfile, "%s \"(anon):", ASM_STABS_OP); | |
2014 | } | |
3a7587e4 | 2015 | dbxout_type (TREE_TYPE (parms), 0, 0); |
00fe048c RS |
2016 | dbxout_finish_symbol (parms); |
2017 | } | |
2018 | } | |
2019 | } | |
2020 | \f | |
2021 | /* Given a chain of ..._TYPE nodes (as come in a parameter list), | |
2022 | output definitions of those names, in raw form */ | |
2023 | ||
2024 | void | |
2025 | dbxout_args (args) | |
2026 | tree args; | |
2027 | { | |
2028 | while (args) | |
2029 | { | |
2030 | putc (',', asmfile); | |
3a7587e4 | 2031 | dbxout_type (TREE_VALUE (args), 0, 0); |
00fe048c RS |
2032 | CHARS (1); |
2033 | args = TREE_CHAIN (args); | |
2034 | } | |
2035 | } | |
2036 | \f | |
2037 | /* Given a chain of ..._TYPE nodes, | |
2038 | find those which have typedef names and output those names. | |
2039 | This is to ensure those types get output. */ | |
2040 | ||
2041 | void | |
2042 | dbxout_types (types) | |
2043 | register tree types; | |
2044 | { | |
2045 | while (types) | |
2046 | { | |
2047 | if (TYPE_NAME (types) | |
2048 | && TREE_CODE (TYPE_NAME (types)) == TYPE_DECL | |
2049 | && ! TREE_ASM_WRITTEN (TYPE_NAME (types))) | |
2050 | dbxout_symbol (TYPE_NAME (types), 1); | |
2051 | types = TREE_CHAIN (types); | |
2052 | } | |
2053 | } | |
2054 | \f | |
2055 | /* Output everything about a symbol block (a BLOCK node | |
2056 | that represents a scope level), | |
2057 | including recursive output of contained blocks. | |
2058 | ||
2059 | BLOCK is the BLOCK node. | |
2060 | DEPTH is its depth within containing symbol blocks. | |
2061 | ARGS is usually zero; but for the outermost block of the | |
2062 | body of a function, it is a chain of PARM_DECLs for the function parameters. | |
2063 | We output definitions of all the register parms | |
2064 | as if they were local variables of that block. | |
2065 | ||
2066 | If -g1 was used, we count blocks just the same, but output nothing | |
2067 | except for the outermost block. | |
2068 | ||
2069 | Actually, BLOCK may be several blocks chained together. | |
2070 | We handle them all in sequence. */ | |
2071 | ||
2072 | static void | |
2073 | dbxout_block (block, depth, args) | |
2074 | register tree block; | |
2075 | int depth; | |
2076 | tree args; | |
2077 | { | |
2078 | int blocknum; | |
2079 | ||
2080 | while (block) | |
2081 | { | |
2082 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
2083 | if (TREE_USED (block)) | |
2084 | { | |
2085 | #ifndef DBX_LBRAC_FIRST | |
2086 | /* In dbx format, the syms of a block come before the N_LBRAC. */ | |
2087 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) | |
2088 | dbxout_syms (BLOCK_VARS (block)); | |
2089 | if (args) | |
2090 | dbxout_reg_parms (args); | |
2091 | #endif | |
2092 | ||
2093 | /* Now output an N_LBRAC symbol to represent the beginning of | |
2094 | the block. Use the block's tree-walk order to generate | |
2095 | the assembler symbols LBBn and LBEn | |
2096 | that final will define around the code in this block. */ | |
2097 | if (depth > 0 && debug_info_level != DINFO_LEVEL_TERSE) | |
2098 | { | |
2099 | char buf[20]; | |
2100 | blocknum = next_block_number++; | |
2101 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBB", blocknum); | |
2102 | ||
2103 | if (BLOCK_HANDLER_BLOCK (block)) | |
2104 | { | |
2105 | /* A catch block. Must precede N_LBRAC. */ | |
2106 | tree decl = BLOCK_VARS (block); | |
2107 | while (decl) | |
2108 | { | |
2109 | #ifdef DBX_OUTPUT_CATCH | |
2110 | DBX_OUTPUT_CATCH (asmfile, decl, buf); | |
2111 | #else | |
b372168c | 2112 | fprintf (asmfile, "%s \"%s:C1\",%d,0,0,", ASM_STABS_OP, |
00fe048c RS |
2113 | IDENTIFIER_POINTER (DECL_NAME (decl)), N_CATCH); |
2114 | assemble_name (asmfile, buf); | |
2115 | fprintf (asmfile, "\n"); | |
2116 | #endif | |
2117 | decl = TREE_CHAIN (decl); | |
2118 | } | |
2119 | } | |
2120 | ||
2121 | fprintf (asmfile, "%s %d,0,0,", ASM_STABN_OP, N_LBRAC); | |
2122 | assemble_name (asmfile, buf); | |
2123 | fprintf (asmfile, "\n"); | |
2124 | } | |
2125 | else if (depth > 0) | |
2126 | /* Count blocks the same way regardless of debug_info_level. */ | |
2127 | next_block_number++; | |
2128 | ||
2129 | #ifdef DBX_LBRAC_FIRST | |
2130 | /* On some weird machines, the syms of a block | |
2131 | come after the N_LBRAC. */ | |
2132 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) | |
2133 | dbxout_syms (BLOCK_VARS (block)); | |
2134 | if (args) | |
2135 | dbxout_reg_parms (args); | |
2136 | #endif | |
2137 | ||
2138 | /* Output the subblocks. */ | |
2139 | dbxout_block (BLOCK_SUBBLOCKS (block), depth + 1, 0); | |
2140 | ||
2141 | /* Refer to the marker for the end of the block. */ | |
2142 | if (depth > 0 && debug_info_level != DINFO_LEVEL_TERSE) | |
2143 | { | |
2144 | char buf[20]; | |
2145 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBE", blocknum); | |
2146 | fprintf (asmfile, "%s %d,0,0,", ASM_STABN_OP, N_RBRAC); | |
2147 | assemble_name (asmfile, buf); | |
2148 | fprintf (asmfile, "\n"); | |
2149 | } | |
2150 | } | |
2151 | block = BLOCK_CHAIN (block); | |
2152 | } | |
2153 | } | |
2154 | ||
2155 | /* Output the information about a function and its arguments and result. | |
2156 | Usually this follows the function's code, | |
2157 | but on some systems, it comes before. */ | |
2158 | ||
2159 | static void | |
2160 | dbxout_really_begin_function (decl) | |
2161 | tree decl; | |
2162 | { | |
2163 | dbxout_symbol (decl, 0); | |
2164 | dbxout_parms (DECL_ARGUMENTS (decl)); | |
2165 | if (DECL_NAME (DECL_RESULT (decl)) != 0) | |
2166 | dbxout_symbol (DECL_RESULT (decl), 1); | |
2167 | } | |
2168 | ||
2169 | /* Called at beginning of output of function definition. */ | |
2170 | ||
2171 | void | |
2172 | dbxout_begin_function (decl) | |
2173 | tree decl; | |
2174 | { | |
2175 | #ifdef DBX_FUNCTION_FIRST | |
2176 | dbxout_really_begin_function (decl); | |
2177 | #endif | |
2178 | } | |
2179 | ||
2180 | /* Output dbx data for a function definition. | |
2181 | This includes a definition of the function name itself (a symbol), | |
2182 | definitions of the parameters (locating them in the parameter list) | |
2183 | and then output the block that makes up the function's body | |
2184 | (including all the auto variables of the function). */ | |
2185 | ||
2186 | void | |
2187 | dbxout_function (decl) | |
2188 | tree decl; | |
2189 | { | |
2190 | #ifndef DBX_FUNCTION_FIRST | |
2191 | dbxout_really_begin_function (decl); | |
2192 | #endif | |
2193 | dbxout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl)); | |
2194 | #ifdef DBX_OUTPUT_FUNCTION_END | |
2195 | DBX_OUTPUT_FUNCTION_END (asmfile, decl); | |
2196 | #endif | |
2197 | } | |
00fe048c | 2198 | #endif /* DBX_DEBUGGING_INFO */ |