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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 | ||
01e2750c RS |
97 | #ifndef DBX_TYPE_DECL_STABS_CODE |
98 | #define DBX_TYPE_DECL_STABS_CODE N_LSYM | |
b372168c MM |
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 | ||
01e2750c RS |
113 | #ifndef DBX_MEMPARM_STABS_LETTER |
114 | #define DBX_MEMPARM_STABS_LETTER 'p' | |
115 | #endif | |
116 | ||
00fe048c RS |
117 | /* Nonzero means if the type has methods, only output debugging |
118 | information if methods are actually written to the asm file. */ | |
119 | ||
120 | static int flag_minimal_debug = 1; | |
121 | ||
122 | /* Nonzero if we have actually used any of the GDB extensions | |
123 | to the debugging format. The idea is that we use them for the | |
124 | first time only if there's a strong reason, but once we have done that, | |
125 | we use them whenever convenient. */ | |
126 | ||
127 | static int have_used_extensions = 0; | |
128 | ||
b372168c | 129 | char *getpwd (); |
00fe048c RS |
130 | |
131 | /* Typical USG systems don't have stab.h, and they also have | |
132 | no use for DBX-format debugging info. */ | |
133 | ||
b372168c | 134 | #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO) |
00fe048c RS |
135 | |
136 | #ifdef DEBUG_SYMS_TEXT | |
137 | #define FORCE_TEXT text_section (); | |
138 | #else | |
139 | #define FORCE_TEXT | |
140 | #endif | |
141 | ||
95f2ba07 | 142 | #if defined (USG) || defined (NO_STAB_H) |
00fe048c RS |
143 | #include "gstab.h" /* If doing DBX on sysV, use our own stab.h. */ |
144 | #else | |
145 | #include <stab.h> /* On BSD, use the system's stab.h. */ | |
146 | ||
147 | /* This is a GNU extension we need to reference in this file. */ | |
148 | #ifndef N_CATCH | |
149 | #define N_CATCH 0x54 | |
150 | #endif | |
151 | #endif /* not USG */ | |
152 | ||
153 | #ifdef __GNU_STAB__ | |
154 | #define STAB_CODE_TYPE enum __stab_debug_code | |
155 | #else | |
156 | #define STAB_CODE_TYPE int | |
157 | #endif | |
158 | ||
159 | /* 1 if PARM is passed to this function in memory. */ | |
160 | ||
161 | #define PARM_PASSED_IN_MEMORY(PARM) \ | |
162 | (GET_CODE (DECL_INCOMING_RTL (PARM)) == MEM) | |
163 | ||
164 | /* A C expression for the integer offset value of an automatic variable | |
165 | (N_LSYM) having address X (an RTX). */ | |
166 | #ifndef DEBUGGER_AUTO_OFFSET | |
167 | #define DEBUGGER_AUTO_OFFSET(X) \ | |
168 | (GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) | |
169 | #endif | |
170 | ||
171 | /* A C expression for the integer offset value of an argument (N_PSYM) | |
172 | having address X (an RTX). The nominal offset is OFFSET. */ | |
173 | #ifndef DEBUGGER_ARG_OFFSET | |
174 | #define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET) | |
175 | #endif | |
176 | ||
177 | /* Stream for writing to assembler file. */ | |
178 | ||
179 | static FILE *asmfile; | |
180 | ||
181 | /* Last source file name mentioned in a NOTE insn. */ | |
182 | ||
183 | static char *lastfile; | |
184 | ||
185 | /* Current working directory. */ | |
186 | ||
187 | static char *cwd; | |
00fe048c RS |
188 | |
189 | enum typestatus {TYPE_UNSEEN, TYPE_XREF, TYPE_DEFINED}; | |
190 | ||
191 | /* Vector recording the status of describing C data types. | |
192 | When we first notice a data type (a tree node), | |
193 | we assign it a number using next_type_number. | |
194 | That is its index in this vector. | |
195 | The vector element says whether we have yet output | |
196 | the definition of the type. TYPE_XREF says we have | |
197 | output it as a cross-reference only. */ | |
198 | ||
199 | enum typestatus *typevec; | |
200 | ||
201 | /* Number of elements of space allocated in `typevec'. */ | |
202 | ||
203 | static int typevec_len; | |
204 | ||
205 | /* In dbx output, each type gets a unique number. | |
206 | This is the number for the next type output. | |
207 | The number, once assigned, is in the TYPE_SYMTAB_ADDRESS field. */ | |
208 | ||
209 | static int next_type_number; | |
210 | ||
211 | /* In dbx output, we must assign symbol-blocks id numbers | |
212 | in the order in which their beginnings are encountered. | |
213 | We output debugging info that refers to the beginning and | |
214 | end of the ranges of code in each block | |
215 | with assembler labels LBBn and LBEn, where n is the block number. | |
216 | The labels are generated in final, which assigns numbers to the | |
217 | blocks in the same way. */ | |
218 | ||
219 | static int next_block_number; | |
220 | ||
221 | /* These variables are for dbxout_symbol to communicate to | |
222 | dbxout_finish_symbol. | |
223 | current_sym_code is the symbol-type-code, a symbol N_... define in stab.h. | |
224 | current_sym_value and current_sym_addr are two ways to address the | |
225 | value to store in the symtab entry. | |
226 | current_sym_addr if nonzero represents the value as an rtx. | |
227 | If that is zero, current_sym_value is used. This is used | |
228 | when the value is an offset (such as for auto variables, | |
229 | register variables and parms). */ | |
230 | ||
231 | static STAB_CODE_TYPE current_sym_code; | |
232 | static int current_sym_value; | |
233 | static rtx current_sym_addr; | |
234 | ||
235 | /* Number of chars of symbol-description generated so far for the | |
236 | current symbol. Used by CHARS and CONTIN. */ | |
237 | ||
238 | static int current_sym_nchars; | |
239 | ||
240 | /* Report having output N chars of the current symbol-description. */ | |
241 | ||
242 | #define CHARS(N) (current_sym_nchars += (N)) | |
243 | ||
244 | /* Break the current symbol-description, generating a continuation, | |
245 | if it has become long. */ | |
246 | ||
247 | #ifndef DBX_CONTIN_LENGTH | |
248 | #define DBX_CONTIN_LENGTH 80 | |
249 | #endif | |
250 | ||
251 | #if DBX_CONTIN_LENGTH > 0 | |
252 | #define CONTIN \ | |
253 | do {if (current_sym_nchars > DBX_CONTIN_LENGTH) dbxout_continue ();} while (0) | |
254 | #else | |
255 | #define CONTIN | |
256 | #endif | |
257 | ||
258 | void dbxout_types (); | |
259 | void dbxout_args (); | |
260 | void dbxout_symbol (); | |
261 | static void dbxout_type_name (); | |
262 | static void dbxout_type (); | |
263 | static void dbxout_typedefs (); | |
264 | static void dbxout_prepare_symbol (); | |
265 | static void dbxout_finish_symbol (); | |
266 | static void dbxout_continue (); | |
267 | static void print_int_cst_octal (); | |
268 | static void print_octal (); | |
269 | \f | |
270 | #if 0 /* Not clear we will actually need this. */ | |
271 | ||
272 | /* Return the absolutized filename for the given relative | |
273 | filename. Note that if that filename is already absolute, it may | |
274 | still be returned in a modified form because this routine also | |
275 | eliminates redundant slashes and single dots and eliminates double | |
276 | dots to get a shortest possible filename from the given input | |
277 | filename. The absolutization of relative filenames is made by | |
278 | assuming that the given filename is to be taken as relative to | |
279 | the first argument (cwd) or to the current directory if cwd is | |
280 | NULL. */ | |
281 | ||
282 | static char * | |
283 | abspath (rel_filename) | |
284 | char *rel_filename; | |
285 | { | |
286 | /* Setup the current working directory as needed. */ | |
287 | char *abs_buffer | |
288 | = (char *) alloca (strlen (cwd) + strlen (rel_filename) + 1); | |
289 | char *endp = abs_buffer; | |
290 | char *outp, *inp; | |
291 | char *value; | |
292 | ||
b372168c | 293 | /* Copy the filename (possibly preceded by the current working |
00fe048c RS |
294 | directory name) into the absolutization buffer. */ |
295 | ||
296 | { | |
297 | char *src_p; | |
298 | ||
299 | if (rel_filename[0] != '/') | |
300 | { | |
301 | src_p = cwd; | |
302 | while (*endp++ = *src_p++) | |
303 | continue; | |
304 | *(endp-1) = '/'; /* overwrite null */ | |
305 | } | |
306 | src_p = rel_filename; | |
307 | while (*endp++ = *src_p++) | |
308 | continue; | |
309 | if (endp[-1] == '/') | |
310 | *endp = '\0'; | |
00fe048c RS |
311 | |
312 | /* Now make a copy of abs_buffer into abs_buffer, shortening the | |
313 | filename (by taking out slashes and dots) as we go. */ | |
314 | ||
315 | outp = inp = abs_buffer; | |
316 | *outp++ = *inp++; /* copy first slash */ | |
317 | for (;;) | |
318 | { | |
319 | if (!inp[0]) | |
320 | break; | |
321 | else if (inp[0] == '/' && outp[-1] == '/') | |
322 | { | |
323 | inp++; | |
324 | continue; | |
325 | } | |
326 | else if (inp[0] == '.' && outp[-1] == '/') | |
327 | { | |
328 | if (!inp[1]) | |
329 | break; | |
330 | else if (inp[1] == '/') | |
331 | { | |
332 | inp += 2; | |
333 | continue; | |
334 | } | |
335 | else if ((inp[1] == '.') && (inp[2] == 0 || inp[2] == '/')) | |
336 | { | |
337 | inp += (inp[2] == '/') ? 3 : 2; | |
338 | outp -= 2; | |
339 | while (outp >= abs_buffer && *outp != '/') | |
340 | outp--; | |
341 | if (outp < abs_buffer) | |
342 | { | |
343 | /* Catch cases like /.. where we try to backup to a | |
344 | point above the absolute root of the logical file | |
345 | system. */ | |
346 | ||
347 | fprintf (stderr, "%s: invalid file name: %s\n", | |
348 | pname, rel_filename); | |
349 | exit (1); | |
350 | } | |
351 | *++outp = '\0'; | |
352 | continue; | |
353 | } | |
354 | } | |
355 | *outp++ = *inp++; | |
356 | } | |
357 | ||
358 | /* On exit, make sure that there is a trailing null, and make sure that | |
359 | the last character of the returned string is *not* a slash. */ | |
360 | ||
361 | *outp = '\0'; | |
362 | if (outp[-1] == '/') | |
363 | *--outp = '\0'; | |
364 | ||
365 | /* Make a copy (in the heap) of the stuff left in the absolutization | |
366 | buffer and return a pointer to the copy. */ | |
367 | ||
368 | value = (char *) oballoc (strlen (abs_buffer) + 1); | |
369 | strcpy (value, abs_buffer); | |
370 | return value; | |
371 | } | |
372 | #endif /* 0 */ | |
373 | \f | |
374 | /* At the beginning of compilation, start writing the symbol table. | |
375 | Initialize `typevec' and output the standard data types of C. */ | |
376 | ||
377 | void | |
378 | dbxout_init (asm_file, input_file_name, syms) | |
379 | FILE *asm_file; | |
380 | char *input_file_name; | |
381 | tree syms; | |
382 | { | |
383 | char ltext_label_name[100]; | |
384 | ||
385 | asmfile = asm_file; | |
386 | ||
387 | typevec_len = 100; | |
388 | typevec = (enum typestatus *) xmalloc (typevec_len * sizeof typevec[0]); | |
389 | bzero (typevec, typevec_len * sizeof typevec[0]); | |
390 | ||
391 | /* Convert Ltext into the appropriate format for local labels in case | |
392 | the system doesn't insert underscores in front of user generated | |
393 | labels. */ | |
394 | ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", 0); | |
395 | ||
396 | /* Put the current working directory in an N_SO symbol. */ | |
b372168c MM |
397 | #ifndef DBX_WORKING_DIRECTORY /* Only some versions of DBX want this, |
398 | but GDB always does. */ | |
399 | if (use_gdb_dbx_extensions) | |
400 | #endif | |
401 | { | |
402 | if (cwd || (cwd = getpwd ())) | |
403 | { | |
00fe048c | 404 | #ifdef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY |
b372168c | 405 | DBX_OUTPUT_MAIN_SOURCE_DIRECTORY (asmfile, cwd); |
00fe048c | 406 | #else /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
b372168c MM |
407 | fprintf (asmfile, "%s \"%s/\",%d,0,0,%s\n", ASM_STABS_OP, |
408 | cwd, N_SO, <ext_label_name[1]); | |
00fe048c | 409 | #endif /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */ |
b372168c MM |
410 | } |
411 | } | |
00fe048c RS |
412 | |
413 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILENAME | |
414 | /* This should NOT be DBX_OUTPUT_SOURCE_FILENAME. That | |
415 | would give us an N_SOL, and we want an N_SO. */ | |
416 | DBX_OUTPUT_MAIN_SOURCE_FILENAME (asmfile, input_file_name); | |
417 | #else /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */ | |
418 | /* We include outputting `Ltext:' here, | |
419 | because that gives you a way to override it. */ | |
420 | /* Used to put `Ltext:' before the reference, but that loses on sun 4. */ | |
421 | fprintf (asmfile, "%s \"%s\",%d,0,0,%s\n", ASM_STABS_OP, input_file_name, | |
422 | N_SO, <ext_label_name[1]); | |
423 | text_section (); | |
424 | ASM_OUTPUT_INTERNAL_LABEL (asmfile, "Ltext", 0); | |
425 | #endif /* no DBX_OUTPUT_MAIN_SOURCE_FILENAME */ | |
426 | ||
427 | lastfile = input_file_name; | |
428 | ||
429 | next_type_number = 1; | |
430 | next_block_number = 2; | |
431 | ||
432 | /* Make sure that types `int' and `char' have numbers 1 and 2. | |
433 | Definitions of other integer types will refer to those numbers. | |
434 | (Actually it should no longer matter what their numbers are. | |
435 | Also, if any types with tags have been defined, dbxout_symbol | |
436 | will output them first, so the numbers won't be 1 and 2. That | |
437 | happens in C++. So it's a good thing it should no longer matter). */ | |
438 | ||
439 | #ifdef DBX_OUTPUT_STANDARD_TYPES | |
440 | DBX_OUTPUT_STANDARD_TYPES (syms); | |
441 | #else | |
442 | dbxout_symbol (TYPE_NAME (integer_type_node), 0); | |
443 | dbxout_symbol (TYPE_NAME (char_type_node), 0); | |
444 | #endif | |
445 | ||
446 | /* Get all permanent types that have typedef names, | |
447 | and output them all, except for those already output. */ | |
448 | ||
449 | dbxout_typedefs (syms); | |
450 | } | |
451 | ||
452 | /* Output any typedef names for types described by TYPE_DECLs in SYMS, | |
453 | in the reverse order from that which is found in SYMS. */ | |
454 | ||
455 | static void | |
456 | dbxout_typedefs (syms) | |
457 | tree syms; | |
458 | { | |
459 | if (syms) | |
460 | { | |
461 | dbxout_typedefs (TREE_CHAIN (syms)); | |
462 | if (TREE_CODE (syms) == TYPE_DECL) | |
463 | { | |
464 | tree type = TREE_TYPE (syms); | |
465 | if (TYPE_NAME (type) | |
466 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
467 | && ! TREE_ASM_WRITTEN (TYPE_NAME (type))) | |
468 | dbxout_symbol (TYPE_NAME (type), 0); | |
469 | } | |
470 | } | |
471 | } | |
472 | ||
473 | /* Output debugging info to FILE to switch to sourcefile FILENAME. */ | |
474 | ||
475 | void | |
476 | dbxout_source_file (file, filename) | |
477 | FILE *file; | |
478 | char *filename; | |
479 | { | |
480 | char ltext_label_name[100]; | |
481 | ||
482 | if (filename && (lastfile == 0 || strcmp (filename, lastfile))) | |
483 | { | |
484 | #ifdef DBX_OUTPUT_SOURCE_FILENAME | |
485 | DBX_OUTPUT_SOURCE_FILENAME (file, filename); | |
486 | #else | |
487 | ASM_GENERATE_INTERNAL_LABEL (ltext_label_name, "Ltext", 0); | |
488 | fprintf (file, "%s \"%s\",%d,0,0,%s\n", ASM_STABS_OP, | |
489 | filename, N_SOL, <ext_label_name[1]); | |
490 | #endif | |
491 | lastfile = filename; | |
492 | } | |
493 | } | |
494 | ||
495 | /* At the end of compilation, finish writing the symbol table. | |
496 | Unless you define DBX_OUTPUT_MAIN_SOURCE_FILE_END, the default is | |
497 | to do nothing. */ | |
498 | ||
499 | void | |
500 | dbxout_finish (file, filename) | |
501 | FILE *file; | |
502 | char *filename; | |
503 | { | |
504 | #ifdef DBX_OUTPUT_MAIN_SOURCE_FILE_END | |
505 | DBX_OUTPUT_MAIN_SOURCE_FILE_END (file, filename); | |
506 | #endif /* DBX_OUTPUT_MAIN_SOURCE_FILE_END */ | |
507 | } | |
508 | ||
509 | /* Continue a symbol-description that gets too big. | |
510 | End one symbol table entry with a double-backslash | |
511 | and start a new one, eventually producing something like | |
512 | .stabs "start......\\",code,0,value | |
513 | .stabs "...rest",code,0,value */ | |
514 | ||
515 | static void | |
516 | dbxout_continue () | |
517 | { | |
518 | #ifdef DBX_CONTIN_CHAR | |
519 | fprintf (asmfile, "%c", DBX_CONTIN_CHAR); | |
520 | #else | |
521 | fprintf (asmfile, "\\\\"); | |
522 | #endif | |
523 | dbxout_finish_symbol (0); | |
524 | fprintf (asmfile, "%s \"", ASM_STABS_OP); | |
525 | current_sym_nchars = 0; | |
526 | } | |
527 | \f | |
6dc42e49 | 528 | /* Subroutine of `dbxout_type'. Output the type fields of TYPE. |
00fe048c RS |
529 | This must be a separate function because anonymous unions require |
530 | recursive calls. */ | |
531 | ||
532 | static void | |
533 | dbxout_type_fields (type) | |
534 | tree type; | |
535 | { | |
536 | tree tem; | |
537 | for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem)) | |
538 | { | |
539 | /* Output the name, type, position (in bits), size (in bits) | |
540 | of each field. */ | |
541 | if (DECL_NAME (tem) == NULL_TREE | |
542 | && TREE_CODE (TREE_TYPE (tem)) == UNION_TYPE) | |
543 | dbxout_type_fields (TREE_TYPE (tem)); | |
544 | /* Omit here local type decls until we know how to support them. */ | |
545 | else if (TREE_CODE (tem) == TYPE_DECL) | |
546 | continue; | |
547 | /* Omit here the nameless fields that are used to skip bits. */ | |
548 | else if (DECL_NAME (tem) != 0 && TREE_CODE (tem) != CONST_DECL) | |
549 | { | |
550 | /* Continue the line if necessary, | |
551 | but not before the first field. */ | |
552 | if (tem != TYPE_FIELDS (type)) | |
553 | CONTIN; | |
554 | ||
555 | if (use_gdb_dbx_extensions | |
556 | && flag_minimal_debug | |
557 | && TREE_CODE (tem) == FIELD_DECL | |
558 | && DECL_VIRTUAL_P (tem) | |
559 | && DECL_ASSEMBLER_NAME (tem)) | |
560 | { | |
561 | have_used_extensions = 1; | |
562 | CHARS (3 + IDENTIFIER_LENGTH (DECL_NAME (TYPE_NAME (DECL_FCONTEXT (tem))))); | |
563 | fputs (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem)), asmfile); | |
3a7587e4 | 564 | dbxout_type (DECL_FCONTEXT (tem), 0, 0); |
00fe048c | 565 | fprintf (asmfile, ":"); |
3a7587e4 | 566 | dbxout_type (TREE_TYPE (tem), 0, 0); |
00fe048c RS |
567 | fprintf (asmfile, ",%d;", |
568 | TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem))); | |
569 | continue; | |
570 | } | |
571 | ||
572 | fprintf (asmfile, "%s:", IDENTIFIER_POINTER (DECL_NAME (tem))); | |
573 | CHARS (2 + IDENTIFIER_LENGTH (DECL_NAME (tem))); | |
574 | ||
575 | if (use_gdb_dbx_extensions | |
576 | && (TREE_PRIVATE (tem) || TREE_PROTECTED (tem) | |
577 | || TREE_CODE (tem) != FIELD_DECL)) | |
578 | { | |
579 | have_used_extensions = 1; | |
580 | putc ('/', asmfile); | |
581 | putc ((TREE_PRIVATE (tem) ? '0' | |
582 | : TREE_PROTECTED (tem) ? '1' : '2'), | |
583 | asmfile); | |
584 | CHARS (2); | |
585 | } | |
586 | ||
587 | dbxout_type ((TREE_CODE (tem) == FIELD_DECL | |
588 | && DECL_BIT_FIELD_TYPE (tem)) | |
589 | ? DECL_BIT_FIELD_TYPE (tem) | |
3a7587e4 | 590 | : TREE_TYPE (tem), 0, 0); |
00fe048c RS |
591 | |
592 | if (TREE_CODE (tem) == VAR_DECL) | |
593 | { | |
594 | if (TREE_STATIC (tem) && use_gdb_dbx_extensions) | |
595 | { | |
596 | char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (tem)); | |
597 | have_used_extensions = 1; | |
00fe048c RS |
598 | fprintf (asmfile, ":%s;", name); |
599 | CHARS (strlen (name)); | |
600 | } | |
601 | else | |
602 | { | |
603 | /* If TEM is non-static, GDB won't understand it. */ | |
604 | fprintf (asmfile, ",0,0;"); | |
605 | } | |
606 | } | |
607 | else if (TREE_CODE (DECL_FIELD_BITPOS (tem)) == INTEGER_CST) | |
608 | { | |
609 | fprintf (asmfile, ",%d,%d;", | |
610 | TREE_INT_CST_LOW (DECL_FIELD_BITPOS (tem)), | |
611 | TREE_INT_CST_LOW (DECL_SIZE (tem))); | |
612 | } | |
613 | else | |
614 | /* This has yet to be implemented. */ | |
615 | abort (); | |
616 | CHARS (23); | |
617 | } | |
618 | } | |
619 | } | |
620 | \f | |
6dc42e49 | 621 | /* Subroutine of `dbxout_type_methods'. Output debug info about the |
00fe048c RS |
622 | method described DECL. DEBUG_NAME is an encoding of the method's |
623 | type signature. ??? We may be able to do without DEBUG_NAME altogether | |
624 | now. */ | |
625 | ||
626 | static void | |
627 | dbxout_type_method_1 (decl, debug_name) | |
628 | tree decl; | |
629 | char *debug_name; | |
630 | { | |
631 | tree firstarg = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))); | |
632 | char c1 = 'A', c2; | |
633 | ||
634 | if (TREE_CODE (TREE_TYPE (decl)) == FUNCTION_TYPE) | |
635 | c2 = '?'; | |
636 | else /* it's a METHOD_TYPE. */ | |
637 | { | |
638 | /* A for normal functions. | |
639 | B for `const' member functions. | |
640 | C for `volatile' member functions. | |
641 | D for `const volatile' member functions. */ | |
642 | if (TYPE_READONLY (TREE_TYPE (firstarg))) | |
643 | c1 += 1; | |
644 | if (TYPE_VOLATILE (TREE_TYPE (firstarg))) | |
645 | c1 += 2; | |
646 | ||
647 | if (DECL_VINDEX (decl)) | |
648 | c2 = '*'; | |
649 | else | |
650 | c2 = '.'; | |
651 | } | |
652 | ||
653 | fprintf (asmfile, ":%s;%c%c%c", debug_name, | |
654 | TREE_PRIVATE (decl) ? '0' : TREE_PROTECTED (decl) ? '1' : '2', c1, c2); | |
655 | CHARS (IDENTIFIER_LENGTH (DECL_ASSEMBLER_NAME (decl)) + 6 | |
656 | - (debug_name - IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)))); | |
657 | if (DECL_VINDEX (decl)) | |
658 | { | |
659 | fprintf (asmfile, "%d;", | |
660 | TREE_INT_CST_LOW (DECL_VINDEX (decl))); | |
3a7587e4 | 661 | dbxout_type (DECL_CONTEXT (decl), 0, 0); |
00fe048c RS |
662 | fprintf (asmfile, ";"); |
663 | CHARS (8); | |
664 | } | |
665 | } | |
666 | \f | |
667 | /* Subroutine of `dbxout_type'. Output debug info about the methods defined | |
668 | in TYPE. */ | |
669 | ||
670 | static void | |
671 | dbxout_type_methods (type) | |
672 | register tree type; | |
673 | { | |
674 | /* C++: put out the method names and their parameter lists */ | |
00fe048c | 675 | tree methods = TYPE_METHODS (type); |
95f2ba07 | 676 | tree type_encoding; |
00fe048c RS |
677 | register tree fndecl; |
678 | register tree last; | |
679 | register int type_identifier_length; | |
680 | ||
681 | if (methods == NULL_TREE) | |
682 | return; | |
683 | ||
3a7587e4 | 684 | type_encoding = DECL_NAME (TYPE_NAME (type)); |
95f2ba07 KR |
685 | |
686 | /* C++: Template classes break some assumptions made by this code about | |
687 | the class names, constructor names, and encodings for assembler | |
688 | label names. For now, disable output of dbx info for them. */ | |
689 | { | |
3a7587e4 | 690 | char *ptr = IDENTIFIER_POINTER (type_encoding); |
95f2ba07 KR |
691 | /* Avoid strchr or index since those names aren't universal. */ |
692 | while (*ptr && *ptr != '<') ptr++; | |
693 | if (*ptr != 0) | |
694 | { | |
695 | static int warned; | |
696 | if (!warned) | |
697 | { | |
698 | warned = 1; | |
699 | warning ("dbx info for template class methods not yet supported"); | |
700 | } | |
701 | return; | |
702 | } | |
703 | } | |
704 | ||
3a7587e4 | 705 | type_identifier_length = IDENTIFIER_LENGTH (type_encoding); |
95f2ba07 | 706 | |
00fe048c RS |
707 | if (TREE_CODE (methods) == FUNCTION_DECL) |
708 | fndecl = methods; | |
709 | else if (TREE_VEC_ELT (methods, 0) != NULL_TREE) | |
710 | fndecl = TREE_VEC_ELT (methods, 0); | |
711 | else fndecl = TREE_VEC_ELT (methods, 1); | |
712 | ||
00fe048c RS |
713 | while (fndecl) |
714 | { | |
715 | tree name = DECL_NAME (fndecl); | |
3a7587e4 | 716 | int need_prefix = 1; |
00fe048c | 717 | |
3a7587e4 RS |
718 | /* Group together all the methods for the same operation. |
719 | These differ in the types of the arguments. */ | |
00fe048c RS |
720 | for (last = NULL_TREE; |
721 | fndecl && (last == NULL_TREE || DECL_NAME (fndecl) == DECL_NAME (last)); | |
722 | fndecl = TREE_CHAIN (fndecl)) | |
723 | /* Output the name of the field (after overloading), as | |
724 | well as the name of the field before overloading, along | |
725 | with its parameter list */ | |
726 | { | |
3a7587e4 RS |
727 | /* This is the "mangled" name of the method. |
728 | It encodes the argument types. */ | |
00fe048c | 729 | char *debug_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fndecl)); |
3a7587e4 | 730 | int destructor = 0; |
00fe048c RS |
731 | |
732 | CONTIN; | |
733 | ||
734 | last = fndecl; | |
3a7587e4 RS |
735 | |
736 | if (DECL_IGNORED_P (fndecl)) | |
737 | continue; | |
738 | ||
00fe048c RS |
739 | if (flag_minimal_debug) |
740 | { | |
3a7587e4 RS |
741 | /* Detect ordinary methods because their mangled names |
742 | start with the operation name. */ | |
743 | if (!strncmp (IDENTIFIER_POINTER (name), debug_name, | |
744 | IDENTIFIER_LENGTH (name))) | |
745 | { | |
746 | debug_name += IDENTIFIER_LENGTH (name); | |
747 | if (debug_name[0] == '_' && debug_name[1] == '_') | |
748 | { | |
749 | char *method_name = debug_name + 2; | |
750 | /* Get past const and volatile qualifiers. */ | |
751 | while (*method_name == 'C' || *method_name == 'V') | |
752 | method_name++; | |
753 | if (! strncmp (method_name, | |
754 | IDENTIFIER_POINTER (type_encoding), | |
755 | type_identifier_length)) | |
756 | method_name += type_identifier_length; | |
757 | debug_name = method_name; | |
758 | } | |
759 | } | |
760 | /* Detect constructors by their style of name mangling. */ | |
761 | else if (debug_name[0] == '_' && debug_name[1] == '_') | |
762 | { | |
763 | char *ctor_name = debug_name + 2; | |
764 | while (*ctor_name == 'C' || *ctor_name == 'V') | |
765 | ctor_name++; | |
766 | if (!strncmp (IDENTIFIER_POINTER (type_encoding), ctor_name, | |
767 | type_identifier_length)) | |
768 | debug_name = ctor_name + type_identifier_length; | |
769 | } | |
770 | /* The other alternative is a destructor. */ | |
771 | else | |
772 | destructor = 1; | |
773 | ||
774 | /* Output the operation name just once, for the first method | |
775 | that we output. */ | |
776 | if (need_prefix) | |
777 | { | |
778 | fprintf (asmfile, "%s::", IDENTIFIER_POINTER (name)); | |
779 | CHARS (IDENTIFIER_LENGTH (name) + 2); | |
780 | need_prefix = 0; | |
781 | } | |
00fe048c | 782 | } |
3a7587e4 RS |
783 | |
784 | dbxout_type (TREE_TYPE (fndecl), 0, destructor); | |
785 | ||
00fe048c RS |
786 | dbxout_type_method_1 (fndecl, debug_name); |
787 | } | |
52a73899 MS |
788 | if (!need_prefix) |
789 | { | |
790 | putc (';', asmfile); | |
791 | CHARS (1); | |
792 | } | |
00fe048c RS |
793 | } |
794 | } | |
795 | \f | |
796 | /* Output a reference to a type. If the type has not yet been | |
797 | described in the dbx output, output its definition now. | |
798 | For a type already defined, just refer to its definition | |
799 | using the type number. | |
800 | ||
801 | If FULL is nonzero, and the type has been described only with | |
802 | a forward-reference, output the definition now. | |
803 | If FULL is zero in this case, just refer to the forward-reference | |
3a7587e4 RS |
804 | using the number previously allocated. |
805 | ||
806 | If SHOW_ARG_TYPES is nonzero, we output a description of the argument | |
807 | types for a METHOD_TYPE. */ | |
00fe048c RS |
808 | |
809 | static void | |
3a7587e4 | 810 | dbxout_type (type, full, show_arg_types) |
00fe048c RS |
811 | tree type; |
812 | int full; | |
3a7587e4 | 813 | int show_arg_types; |
00fe048c RS |
814 | { |
815 | register tree tem; | |
816 | ||
817 | /* If there was an input error and we don't really have a type, | |
818 | avoid crashing and write something that is at least valid | |
819 | by assuming `int'. */ | |
820 | if (type == error_mark_node) | |
821 | type = integer_type_node; | |
822 | else | |
823 | { | |
824 | type = TYPE_MAIN_VARIANT (type); | |
825 | if (TYPE_NAME (type) | |
826 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
827 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
828 | full = 0; | |
829 | } | |
830 | ||
831 | if (TYPE_SYMTAB_ADDRESS (type) == 0) | |
832 | { | |
833 | /* Type has no dbx number assigned. Assign next available number. */ | |
834 | TYPE_SYMTAB_ADDRESS (type) = next_type_number++; | |
835 | ||
836 | /* Make sure type vector is long enough to record about this type. */ | |
837 | ||
838 | if (next_type_number == typevec_len) | |
839 | { | |
840 | typevec = (enum typestatus *) xrealloc (typevec, typevec_len * 2 * sizeof typevec[0]); | |
841 | bzero (typevec + typevec_len, typevec_len * sizeof typevec[0]); | |
842 | typevec_len *= 2; | |
843 | } | |
844 | } | |
845 | ||
846 | /* Output the number of this type, to refer to it. */ | |
847 | fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (type)); | |
848 | CHARS (3); | |
849 | ||
b372168c MM |
850 | #ifdef DBX_TYPE_DEFINED |
851 | if (DBX_TYPE_DEFINED (type)) | |
852 | return; | |
853 | #endif | |
854 | ||
00fe048c RS |
855 | /* If this type's definition has been output or is now being output, |
856 | that is all. */ | |
857 | ||
858 | switch (typevec[TYPE_SYMTAB_ADDRESS (type)]) | |
859 | { | |
860 | case TYPE_UNSEEN: | |
861 | break; | |
862 | case TYPE_XREF: | |
dad0145a RS |
863 | /* If we have already had a cross reference, |
864 | and either that's all we want or that's the best we could do, | |
865 | don't repeat the cross reference. | |
866 | Sun dbx crashes if we do. */ | |
867 | if (! full || TYPE_SIZE (type) == 0 | |
868 | /* No way in DBX fmt to describe a variable size. */ | |
869 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) | |
00fe048c RS |
870 | return; |
871 | break; | |
872 | case TYPE_DEFINED: | |
873 | return; | |
874 | } | |
875 | ||
876 | #ifdef DBX_NO_XREFS | |
877 | /* For systems where dbx output does not allow the `=xsNAME:' syntax, | |
878 | leave the type-number completely undefined rather than output | |
879 | a cross-reference. */ | |
880 | if (TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE | |
881 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
882 | ||
883 | if ((TYPE_NAME (type) != 0 && !full) | |
884 | || TYPE_SIZE (type) == 0) | |
885 | { | |
886 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF; | |
887 | return; | |
888 | } | |
889 | #endif | |
890 | ||
891 | /* Output a definition now. */ | |
892 | ||
893 | fprintf (asmfile, "="); | |
894 | CHARS (1); | |
895 | ||
896 | /* Mark it as defined, so that if it is self-referent | |
897 | we will not get into an infinite recursion of definitions. */ | |
898 | ||
899 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_DEFINED; | |
900 | ||
901 | switch (TREE_CODE (type)) | |
902 | { | |
903 | case VOID_TYPE: | |
904 | case LANG_TYPE: | |
905 | /* For a void type, just define it as itself; ie, "5=5". | |
906 | This makes us consider it defined | |
907 | without saying what it is. The debugger will make it | |
908 | a void type when the reference is seen, and nothing will | |
909 | ever override that default. */ | |
910 | fprintf (asmfile, "%d", TYPE_SYMTAB_ADDRESS (type)); | |
911 | CHARS (3); | |
912 | break; | |
913 | ||
914 | case INTEGER_TYPE: | |
915 | if (type == char_type_node && ! TREE_UNSIGNED (type)) | |
916 | /* Output the type `char' as a subrange of itself! | |
917 | I don't understand this definition, just copied it | |
918 | from the output of pcc. | |
919 | This used to use `r2' explicitly and we used to | |
920 | take care to make sure that `char' was type number 2. */ | |
921 | fprintf (asmfile, "r%d;0;127;", TYPE_SYMTAB_ADDRESS (type)); | |
922 | #ifdef WINNING_GDB | |
923 | else if (TYPE_PRECISION (type) > BITS_PER_WORD) | |
924 | { | |
925 | /* This used to say `r1' and we used to take care | |
926 | to make sure that `int' was type number 1. */ | |
927 | fprintf (asmfile, "r%d;", TYPE_SYMTAB_ADDRESS (integer_type_node)); | |
928 | print_int_cst_octal (TYPE_MIN_VALUE (type)); | |
929 | fprintf (asmfile, ";"); | |
930 | print_int_cst_octal (TYPE_MAX_VALUE (type)); | |
931 | fprintf (asmfile, ";"); | |
932 | } | |
933 | #endif | |
934 | else | |
935 | /* Output other integer types as subranges of `int'. */ | |
936 | /* This used to say `r1' and we used to take care | |
937 | to make sure that `int' was type number 1. */ | |
938 | fprintf (asmfile, "r%d;%d;%d;", | |
939 | TYPE_SYMTAB_ADDRESS (integer_type_node), | |
940 | TREE_INT_CST_LOW (TYPE_MIN_VALUE (type)), | |
941 | TREE_INT_CST_LOW (TYPE_MAX_VALUE (type))); | |
942 | CHARS (25); | |
943 | break; | |
944 | ||
945 | case REAL_TYPE: | |
946 | /* This used to say `r1' and we used to take care | |
947 | to make sure that `int' was type number 1. */ | |
948 | fprintf (asmfile, "r%d;%d;0;", TYPE_SYMTAB_ADDRESS (integer_type_node), | |
949 | TREE_INT_CST_LOW (size_in_bytes (type))); | |
950 | CHARS (16); | |
951 | break; | |
952 | ||
953 | case ARRAY_TYPE: | |
954 | /* Output "a" followed by a range type definition | |
955 | for the index type of the array | |
956 | followed by a reference to the target-type. | |
957 | ar1;0;N;M for an array of type M and size N. */ | |
958 | /* This used to say `r1' and we used to take care | |
959 | to make sure that `int' was type number 1. */ | |
960 | fprintf (asmfile, "ar%d;0;%d;", TYPE_SYMTAB_ADDRESS (integer_type_node), | |
961 | ||
962 | (TYPE_DOMAIN (type) | |
963 | ? TREE_INT_CST_LOW (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) | |
964 | : -1)); | |
965 | CHARS (17); | |
3a7587e4 | 966 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
967 | break; |
968 | ||
969 | case RECORD_TYPE: | |
970 | case UNION_TYPE: | |
971 | { | |
972 | int i, n_baseclasses = 0; | |
973 | ||
974 | if (TYPE_BINFO (type) != 0 && TYPE_BINFO_BASETYPES (type) != 0) | |
975 | n_baseclasses = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (type)); | |
976 | ||
977 | /* Output a structure type. */ | |
b372168c | 978 | if ((TYPE_NAME (type) != 0 |
95f2ba07 KR |
979 | #if 0 /* Tiemann says this creates output tha "confuses GDB". |
980 | Too bad the info is so vague. Hope this doesn't lose. */ | |
b372168c MM |
981 | && ! (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL |
982 | && DECL_IGNORED_P (TYPE_NAME (type))) | |
95f2ba07 | 983 | #endif |
b372168c | 984 | && !full) |
3a7587e4 RS |
985 | || TYPE_SIZE (type) == 0 |
986 | /* No way in DBX fmt to describe a variable size. */ | |
987 | || TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST) | |
00fe048c RS |
988 | { |
989 | /* If the type is just a cross reference, output one | |
990 | and mark the type as partially described. | |
991 | If it later becomes defined, we will output | |
992 | its real definition. | |
993 | If the type has a name, don't nest its definition within | |
994 | another type's definition; instead, output an xref | |
995 | and let the definition come when the name is defined. */ | |
996 | fprintf (asmfile, (TREE_CODE (type) == RECORD_TYPE) ? "xs" : "xu"); | |
997 | CHARS (3); | |
95f2ba07 | 998 | #if 0 /* This assertion is legitimately false in C++. */ |
00fe048c RS |
999 | /* We shouldn't be outputting a reference to a type before its |
1000 | definition unless the type has a tag name. | |
1001 | A typedef name without a tag name should be impossible. */ | |
1002 | if (TREE_CODE (TYPE_NAME (type)) != IDENTIFIER_NODE) | |
1003 | abort (); | |
1004 | #endif | |
1005 | dbxout_type_name (type); | |
1006 | fprintf (asmfile, ":"); | |
1007 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF; | |
1008 | break; | |
1009 | } | |
1010 | tem = size_in_bytes (type); | |
1011 | ||
00fe048c RS |
1012 | /* Identify record or union, and print its size. */ |
1013 | fprintf (asmfile, (TREE_CODE (type) == RECORD_TYPE) ? "s%d" : "u%d", | |
1014 | TREE_INT_CST_LOW (tem)); | |
1015 | ||
1016 | if (use_gdb_dbx_extensions) | |
1017 | { | |
1018 | if (n_baseclasses) | |
1019 | { | |
1020 | have_used_extensions = 1; | |
1021 | fprintf (asmfile, "!%d,", n_baseclasses); | |
1022 | CHARS (8); | |
1023 | } | |
1024 | } | |
1025 | for (i = 0; i < n_baseclasses; i++) | |
1026 | { | |
1027 | tree child = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (type)), i); | |
1028 | if (use_gdb_dbx_extensions) | |
1029 | { | |
1030 | have_used_extensions = 1; | |
1031 | putc (TREE_VIA_VIRTUAL (child) ? '1' | |
1032 | : '0', | |
1033 | asmfile); | |
1034 | putc (TREE_VIA_PUBLIC (child) ? '2' | |
1035 | : '0', | |
1036 | asmfile); | |
1037 | fprintf (asmfile, "%d,", | |
1038 | TREE_INT_CST_LOW (BINFO_OFFSET (child)) * BITS_PER_UNIT); | |
1039 | CHARS (15); | |
3a7587e4 | 1040 | dbxout_type (BINFO_TYPE (child), 0, 0); |
00fe048c RS |
1041 | putc (';', asmfile); |
1042 | } | |
1043 | else | |
1044 | { | |
1045 | /* Print out the base class information with fields | |
1046 | which have the same names at the types they hold. */ | |
1047 | dbxout_type_name (BINFO_TYPE (child)); | |
1048 | putc (':', asmfile); | |
3a7587e4 | 1049 | dbxout_type (BINFO_TYPE (child), full, 0); |
00fe048c RS |
1050 | fprintf (asmfile, ",%d,%d;", |
1051 | TREE_INT_CST_LOW (BINFO_OFFSET (child)) * BITS_PER_UNIT, | |
1052 | TREE_INT_CST_LOW (DECL_SIZE (TYPE_NAME (BINFO_TYPE (child)))) * BITS_PER_UNIT); | |
1053 | CHARS (20); | |
1054 | } | |
1055 | } | |
1056 | } | |
1057 | ||
1058 | CHARS (11); | |
1059 | ||
1060 | /* Write out the field declarations. */ | |
1061 | dbxout_type_fields (type); | |
b372168c | 1062 | if (use_gdb_dbx_extensions && TYPE_METHODS (type) != NULL_TREE) |
00fe048c RS |
1063 | { |
1064 | have_used_extensions = 1; | |
1065 | dbxout_type_methods (type); | |
1066 | } | |
1067 | putc (';', asmfile); | |
1068 | ||
1069 | if (use_gdb_dbx_extensions && TREE_CODE (type) == RECORD_TYPE | |
1070 | /* Avoid the ~ if we don't really need it--it confuses dbx. */ | |
1071 | && TYPE_VFIELD (type)) | |
1072 | { | |
1073 | have_used_extensions = 1; | |
1074 | ||
1075 | /* Tell GDB+ that it may keep reading. */ | |
1076 | putc ('~', asmfile); | |
1077 | ||
1078 | /* We need to write out info about what field this class | |
1079 | uses as its "main" vtable pointer field, because if this | |
1080 | field is inherited from a base class, GDB cannot necessarily | |
1081 | figure out which field it's using in time. */ | |
1082 | if (TYPE_VFIELD (type)) | |
1083 | { | |
1084 | putc ('%', asmfile); | |
3a7587e4 | 1085 | dbxout_type (DECL_FCONTEXT (TYPE_VFIELD (type)), 0, 0); |
00fe048c RS |
1086 | } |
1087 | putc (';', asmfile); | |
1088 | CHARS (3); | |
1089 | } | |
1090 | break; | |
1091 | ||
1092 | case ENUMERAL_TYPE: | |
1093 | if ((TYPE_NAME (type) != 0 && !full | |
1094 | && (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
1095 | && ! DECL_IGNORED_P (TYPE_NAME (type)))) | |
1096 | || TYPE_SIZE (type) == 0) | |
1097 | { | |
1098 | fprintf (asmfile, "xe"); | |
1099 | CHARS (3); | |
1100 | dbxout_type_name (type); | |
1101 | typevec[TYPE_SYMTAB_ADDRESS (type)] = TYPE_XREF; | |
1102 | fprintf (asmfile, ":"); | |
1103 | return; | |
1104 | } | |
01e2750c RS |
1105 | #ifdef DBX_OUTPUT_ENUM |
1106 | DBX_OUTPUT_ENUM (asmfile, type); | |
1107 | #else | |
00fe048c RS |
1108 | putc ('e', asmfile); |
1109 | CHARS (1); | |
1110 | for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem)) | |
1111 | { | |
1112 | fprintf (asmfile, "%s:%d,", IDENTIFIER_POINTER (TREE_PURPOSE (tem)), | |
1113 | TREE_INT_CST_LOW (TREE_VALUE (tem))); | |
1114 | CHARS (11 + IDENTIFIER_LENGTH (TREE_PURPOSE (tem))); | |
1115 | if (TREE_CHAIN (tem) != 0) | |
1116 | CONTIN; | |
1117 | } | |
1118 | putc (';', asmfile); | |
1119 | CHARS (1); | |
01e2750c | 1120 | #endif |
00fe048c RS |
1121 | break; |
1122 | ||
1123 | case POINTER_TYPE: | |
1124 | putc ('*', asmfile); | |
1125 | CHARS (1); | |
3a7587e4 | 1126 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1127 | break; |
1128 | ||
1129 | case METHOD_TYPE: | |
1130 | if (use_gdb_dbx_extensions) | |
1131 | { | |
1132 | have_used_extensions = 1; | |
1133 | putc ('#', asmfile); | |
1134 | CHARS (1); | |
3a7587e4 | 1135 | if (flag_minimal_debug && !show_arg_types) |
00fe048c | 1136 | { |
3a7587e4 RS |
1137 | /* Normally, just output the return type. |
1138 | The argument types are encoded in the method name. */ | |
00fe048c | 1139 | putc ('#', asmfile); |
3a7587e4 | 1140 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1141 | putc (';', asmfile); |
1142 | CHARS (1); | |
1143 | } | |
1144 | else | |
1145 | { | |
3a7587e4 RS |
1146 | /* When outputing destructors, we need to write |
1147 | the argument types out longhand. */ | |
1148 | dbxout_type (TYPE_METHOD_BASETYPE (type), 0, 0); | |
00fe048c RS |
1149 | putc (',', asmfile); |
1150 | CHARS (1); | |
3a7587e4 | 1151 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1152 | dbxout_args (TYPE_ARG_TYPES (type)); |
1153 | putc (';', asmfile); | |
1154 | CHARS (1); | |
1155 | } | |
1156 | } | |
1157 | else | |
1158 | { | |
1159 | /* Treat it as a function type. */ | |
3a7587e4 | 1160 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1161 | } |
1162 | break; | |
1163 | ||
1164 | case OFFSET_TYPE: | |
1165 | if (use_gdb_dbx_extensions) | |
1166 | { | |
1167 | have_used_extensions = 1; | |
1168 | putc ('@', asmfile); | |
1169 | CHARS (1); | |
3a7587e4 | 1170 | dbxout_type (TYPE_OFFSET_BASETYPE (type), 0, 0); |
00fe048c RS |
1171 | putc (',', asmfile); |
1172 | CHARS (1); | |
3a7587e4 | 1173 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1174 | } |
1175 | else | |
1176 | { | |
1177 | /* Should print as an int, because it is really | |
1178 | just an offset. */ | |
3a7587e4 | 1179 | dbxout_type (integer_type_node, 0, 0); |
00fe048c RS |
1180 | } |
1181 | break; | |
1182 | ||
1183 | case REFERENCE_TYPE: | |
1184 | if (use_gdb_dbx_extensions) | |
1185 | have_used_extensions = 1; | |
1186 | putc (use_gdb_dbx_extensions ? '&' : '*', asmfile); | |
1187 | CHARS (1); | |
3a7587e4 | 1188 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1189 | break; |
1190 | ||
1191 | case FUNCTION_TYPE: | |
1192 | putc ('f', asmfile); | |
1193 | CHARS (1); | |
3a7587e4 | 1194 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c RS |
1195 | break; |
1196 | ||
1197 | default: | |
1198 | abort (); | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | /* Print the value of integer constant C, in octal, | |
1203 | handling double precision. */ | |
1204 | ||
1205 | static void | |
1206 | print_int_cst_octal (c) | |
1207 | tree c; | |
1208 | { | |
1209 | unsigned int high = TREE_INT_CST_HIGH (c); | |
1210 | unsigned int low = TREE_INT_CST_LOW (c); | |
1211 | int excess = (3 - (HOST_BITS_PER_INT % 3)); | |
1212 | ||
1213 | fprintf (asmfile, "0"); | |
1214 | ||
1215 | if (excess == 3) | |
1216 | { | |
1217 | print_octal (high, HOST_BITS_PER_INT / 3); | |
1218 | print_octal (low, HOST_BITS_PER_INT / 3); | |
1219 | } | |
1220 | else | |
1221 | { | |
1222 | unsigned int beg = high >> excess; | |
1223 | unsigned int middle | |
1224 | = ((high & ((1 << excess) - 1)) << (3 - excess) | |
1225 | | (low >> (HOST_BITS_PER_INT / 3 * 3))); | |
1226 | unsigned int end = low & ((1 << (HOST_BITS_PER_INT / 3 * 3)) - 1); | |
1227 | fprintf (asmfile, "%o%01o", beg, middle); | |
1228 | print_octal (end, HOST_BITS_PER_INT / 3); | |
1229 | } | |
1230 | } | |
1231 | ||
1232 | static void | |
1233 | print_octal (value, digits) | |
1234 | unsigned int value; | |
1235 | int digits; | |
1236 | { | |
1237 | int i; | |
1238 | ||
1239 | for (i = digits - 1; i >= 0; i--) | |
1240 | fprintf (asmfile, "%01o", ((value >> (3 * i)) & 7)); | |
1241 | } | |
1242 | ||
1243 | /* Output the name of type TYPE, with no punctuation. | |
1244 | Such names can be set up either by typedef declarations | |
1245 | or by struct, enum and union tags. */ | |
1246 | ||
1247 | static void | |
1248 | dbxout_type_name (type) | |
1249 | register tree type; | |
1250 | { | |
1251 | tree t; | |
1252 | if (TYPE_NAME (type) == 0) | |
1253 | abort (); | |
1254 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
1255 | { | |
1256 | t = TYPE_NAME (type); | |
1257 | } | |
1258 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
1259 | { | |
1260 | t = DECL_NAME (TYPE_NAME (type)); | |
1261 | } | |
1262 | else | |
1263 | abort (); | |
1264 | ||
1265 | fprintf (asmfile, "%s", IDENTIFIER_POINTER (t)); | |
1266 | CHARS (IDENTIFIER_LENGTH (t)); | |
1267 | } | |
1268 | \f | |
1269 | /* Output a .stabs for the symbol defined by DECL, | |
1270 | which must be a ..._DECL node in the normal namespace. | |
1271 | It may be a CONST_DECL, a FUNCTION_DECL, a PARM_DECL or a VAR_DECL. | |
1272 | LOCAL is nonzero if the scope is less than the entire file. */ | |
1273 | ||
1274 | void | |
1275 | dbxout_symbol (decl, local) | |
1276 | tree decl; | |
1277 | int local; | |
1278 | { | |
1279 | int letter = 0; | |
1280 | tree type = TREE_TYPE (decl); | |
1281 | tree context = NULL_TREE; | |
1282 | int regno = -1; | |
1283 | ||
1284 | /* Cast avoids warning in old compilers. */ | |
1285 | current_sym_code = (STAB_CODE_TYPE) 0; | |
1286 | current_sym_value = 0; | |
1287 | current_sym_addr = 0; | |
1288 | ||
1289 | /* Ignore nameless syms, but don't ignore type tags. */ | |
1290 | ||
1291 | if ((DECL_NAME (decl) == 0 && TREE_CODE (decl) != TYPE_DECL) | |
1292 | || DECL_IGNORED_P (decl)) | |
1293 | return; | |
1294 | ||
1295 | dbxout_prepare_symbol (decl); | |
1296 | ||
1297 | /* The output will always start with the symbol name, | |
1298 | so always count that in the length-output-so-far. */ | |
1299 | ||
1300 | if (DECL_NAME (decl) != 0) | |
1301 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (decl)); | |
1302 | ||
1303 | switch (TREE_CODE (decl)) | |
1304 | { | |
1305 | case CONST_DECL: | |
1306 | /* Enum values are defined by defining the enum type. */ | |
1307 | break; | |
1308 | ||
1309 | case FUNCTION_DECL: | |
1310 | if (DECL_RTL (decl) == 0) | |
1311 | return; | |
1312 | if (TREE_EXTERNAL (decl)) | |
1313 | break; | |
1314 | /* Don't mention a nested function under its parent. */ | |
1315 | context = decl_function_context (decl); | |
1316 | if (context == current_function_decl) | |
1317 | break; | |
1318 | if (GET_CODE (DECL_RTL (decl)) != MEM | |
1319 | || GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF) | |
1320 | break; | |
1321 | FORCE_TEXT; | |
1322 | ||
1323 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, | |
1324 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), | |
1325 | TREE_PUBLIC (decl) ? 'F' : 'f'); | |
1326 | ||
1327 | current_sym_code = N_FUN; | |
1328 | current_sym_addr = XEXP (DECL_RTL (decl), 0); | |
1329 | ||
1330 | if (TREE_TYPE (type)) | |
3a7587e4 | 1331 | dbxout_type (TREE_TYPE (type), 0, 0); |
00fe048c | 1332 | else |
3a7587e4 | 1333 | dbxout_type (void_type_node, 0, 0); |
00fe048c RS |
1334 | |
1335 | /* For a nested function, when that function is compiled, | |
1336 | mention the containing function name | |
1337 | as well as (since dbx wants it) our own assembler-name. */ | |
1338 | if (context != 0) | |
1339 | fprintf (asmfile, ",%s,%s", | |
1340 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), | |
1341 | IDENTIFIER_POINTER (DECL_NAME (context))); | |
1342 | ||
1343 | dbxout_finish_symbol (decl); | |
1344 | break; | |
1345 | ||
1346 | case TYPE_DECL: | |
1347 | #if 0 | |
1348 | /* This seems all wrong. Outputting most kinds of types gives no name | |
1349 | at all. A true definition gives no name; a cross-ref for a | |
1350 | structure can give the tag name, but not a type name. | |
1351 | It seems that no typedef name is defined by outputting a type. */ | |
1352 | ||
1353 | /* If this typedef name was defined by outputting the type, | |
1354 | don't duplicate it. */ | |
1355 | if (typevec[TYPE_SYMTAB_ADDRESS (type)] == TYPE_DEFINED | |
1356 | && TYPE_NAME (TREE_TYPE (decl)) == decl) | |
1357 | return; | |
1358 | #endif | |
1359 | /* Don't output the same typedef twice. | |
1360 | And don't output what language-specific stuff doesn't want output. */ | |
1361 | if (TREE_ASM_WRITTEN (decl) || DECL_IGNORED_P (decl)) | |
1362 | return; | |
1363 | ||
1364 | FORCE_TEXT; | |
1365 | ||
a823f1d8 RS |
1366 | { |
1367 | int tag_needed = 1; | |
25bdb910 | 1368 | |
a823f1d8 RS |
1369 | if (DECL_NAME (decl)) |
1370 | { | |
1371 | /* Nonzero means we must output a tag as well as a typedef. */ | |
1372 | tag_needed = 0; | |
00fe048c | 1373 | |
a823f1d8 RS |
1374 | /* Output typedef name. */ |
1375 | fprintf (asmfile, "%s \"%s:", ASM_STABS_OP, | |
1376 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
25bdb910 | 1377 | |
01e2750c RS |
1378 | /* #ifndef DBX_NO_EXTRA_TAGS rms: I think this is no longer needed. */ |
1379 | /* This section makes absolutely no sense to me. Why would a tag | |
1380 | ever be needed at this point? The result of this is that any | |
1381 | structure typedef with the tag omitted is treated as if the | |
1382 | tag was given to be the same as the typedef name. Probably | |
1383 | no harm in it, unless the programmer used the same name for | |
1384 | the tag of a *different* structure. At any rate, Alliant's | |
1385 | debugger would want the tag output before the typedef, so | |
1386 | this code still loses. -- hyc */ | |
1387 | ||
a823f1d8 RS |
1388 | /* Short cut way to output a tag also. */ |
1389 | if ((TREE_CODE (type) == RECORD_TYPE | |
1390 | || TREE_CODE (type) == UNION_TYPE) | |
1391 | && TYPE_NAME (type) == decl) | |
1392 | { | |
1393 | if (use_gdb_dbx_extensions && have_used_extensions) | |
1394 | { | |
1395 | putc ('T', asmfile); | |
1396 | TREE_ASM_WRITTEN (TYPE_NAME (type)) = 1; | |
1397 | } | |
1398 | else | |
1399 | tag_needed = 1; | |
1400 | } | |
01e2750c | 1401 | /* #endif */ |
00fe048c | 1402 | |
a823f1d8 | 1403 | putc ('t', asmfile); |
01e2750c | 1404 | current_sym_code = DBX_TYPE_DECL_STABS_CODE; |
25bdb910 | 1405 | |
a823f1d8 RS |
1406 | dbxout_type (type, 1, 0); |
1407 | dbxout_finish_symbol (decl); | |
1408 | } | |
00fe048c | 1409 | |
a823f1d8 RS |
1410 | if (tag_needed && TYPE_NAME (type) != 0 |
1411 | && !TREE_ASM_WRITTEN (TYPE_NAME (type))) | |
1412 | { | |
1413 | /* For a TYPE_DECL with no name, but the type has a name, | |
1414 | output a tag. | |
1415 | This is what represents `struct foo' with no typedef. */ | |
1416 | /* In C++, the name of a type is the corresponding typedef. | |
1417 | In C, it is an IDENTIFIER_NODE. */ | |
1418 | tree name = TYPE_NAME (type); | |
1419 | if (TREE_CODE (name) == TYPE_DECL) | |
1420 | name = DECL_NAME (name); | |
1421 | ||
01e2750c | 1422 | current_sym_code = DBX_TYPE_DECL_STABS_CODE; |
a823f1d8 RS |
1423 | current_sym_value = 0; |
1424 | current_sym_addr = 0; | |
1425 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (name); | |
1426 | ||
1427 | fprintf (asmfile, "%s \"%s:T", ASM_STABS_OP, | |
1428 | IDENTIFIER_POINTER (name)); | |
1429 | dbxout_type (type, 1, 0); | |
1430 | dbxout_finish_symbol (0); | |
1431 | } | |
1432 | ||
1433 | /* Prevent duplicate output of a typedef. */ | |
1434 | TREE_ASM_WRITTEN (decl) = 1; | |
1435 | break; | |
1436 | } | |
00fe048c RS |
1437 | |
1438 | case PARM_DECL: | |
1439 | /* Parm decls go in their own separate chains | |
1440 | and are output by dbxout_reg_parms and dbxout_parms. */ | |
1441 | abort (); | |
1442 | ||
1443 | case RESULT_DECL: | |
1444 | /* Named return value, treat like a VAR_DECL. */ | |
1445 | case VAR_DECL: | |
1446 | if (DECL_RTL (decl) == 0) | |
1447 | return; | |
1448 | /* Don't mention a variable that is external. | |
1449 | Let the file that defines it describe it. */ | |
1450 | if (TREE_EXTERNAL (decl)) | |
1451 | break; | |
1452 | ||
1453 | /* If the variable is really a constant | |
1454 | and not written in memory, inform the debugger. */ | |
1455 | if (TREE_STATIC (decl) && TREE_READONLY (decl) | |
1456 | && DECL_INITIAL (decl) != 0 | |
1457 | && ! TREE_ASM_WRITTEN (decl) | |
1458 | && (DECL_FIELD_CONTEXT (decl) == NULL_TREE | |
1459 | || TREE_CODE (DECL_FIELD_CONTEXT (decl)) == BLOCK)) | |
1460 | { | |
1461 | if (TREE_PUBLIC (decl) == 0) | |
1462 | { | |
1463 | /* The sun4 assembler does not grok this. */ | |
1464 | char *name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
1465 | if (TREE_CODE (TREE_TYPE (decl)) == INTEGER_TYPE | |
1466 | || TREE_CODE (TREE_TYPE (decl)) == ENUMERAL_TYPE) | |
1467 | { | |
1468 | int ival = TREE_INT_CST_LOW (DECL_INITIAL (decl)); | |
1469 | #ifdef DBX_OUTPUT_CONSTANT_SYMBOL | |
1470 | DBX_OUTPUT_CONSTANT_SYMBOL (asmfile, name, ival); | |
1471 | #else | |
1472 | fprintf (asmfile, "%s \"%s:c=i%d\",0x%x,0,0,0\n", | |
1473 | ASM_STABS_OP, name, ival, N_LSYM); | |
1474 | #endif | |
1475 | return; | |
1476 | } | |
1477 | else if (TREE_CODE (TREE_TYPE (decl)) == REAL_TYPE) | |
1478 | { | |
1479 | /* don't know how to do this yet. */ | |
1480 | } | |
1481 | break; | |
1482 | } | |
1483 | /* else it is something we handle like a normal variable. */ | |
1484 | } | |
1485 | ||
1486 | DECL_RTL (decl) = eliminate_regs (DECL_RTL (decl)); | |
1487 | #ifdef LEAF_REG_REMAP | |
1488 | if (leaf_function) | |
1489 | leaf_renumber_regs_insn (DECL_RTL (decl)); | |
1490 | #endif | |
1491 | ||
1492 | /* Don't mention a variable at all | |
1493 | if it was completely optimized into nothingness. | |
1494 | ||
1495 | If DECL was from an inline function, then it's rtl | |
1496 | is not identically the rtl that was used in this | |
1497 | particular compilation. */ | |
1498 | if (GET_CODE (DECL_RTL (decl)) == REG) | |
1499 | { | |
1500 | regno = REGNO (DECL_RTL (decl)); | |
1501 | if (regno >= FIRST_PSEUDO_REGISTER) | |
1502 | regno = reg_renumber[REGNO (DECL_RTL (decl))]; | |
1503 | if (regno < 0) | |
1504 | break; | |
1505 | } | |
1506 | else if (GET_CODE (DECL_RTL (decl)) == SUBREG) | |
1507 | { | |
1508 | rtx value = DECL_RTL (decl); | |
1509 | int offset = 0; | |
1510 | while (GET_CODE (value) == SUBREG) | |
1511 | { | |
1512 | offset += SUBREG_WORD (value); | |
1513 | value = SUBREG_REG (value); | |
1514 | } | |
1515 | if (GET_CODE (value) == REG) | |
1516 | { | |
1517 | regno = REGNO (value); | |
1518 | if (regno >= FIRST_PSEUDO_REGISTER) | |
1519 | regno = reg_renumber[REGNO (value)]; | |
1520 | if (regno >= 0) | |
1521 | regno += offset; | |
1522 | } | |
1523 | } | |
1524 | ||
1525 | /* The kind-of-variable letter depends on where | |
1526 | the variable is and on the scope of its name: | |
1527 | G and N_GSYM for static storage and global scope, | |
1528 | S for static storage and file scope, | |
1529 | V for static storage and local scope, | |
1530 | for those two, use N_LCSYM if data is in bss segment, | |
1531 | N_STSYM if in data segment, N_FUN otherwise. | |
1532 | (We used N_FUN originally, then changed to N_STSYM | |
1533 | to please GDB. However, it seems that confused ld. | |
1534 | Now GDB has been fixed to like N_FUN, says Kingdon.) | |
1535 | no letter at all, and N_LSYM, for auto variable, | |
1536 | r and N_RSYM for register variable. */ | |
1537 | ||
1538 | if (GET_CODE (DECL_RTL (decl)) == MEM | |
1539 | && GET_CODE (XEXP (DECL_RTL (decl), 0)) == SYMBOL_REF) | |
1540 | { | |
1541 | if (TREE_PUBLIC (decl)) | |
1542 | { | |
1543 | letter = 'G'; | |
1544 | current_sym_code = N_GSYM; | |
1545 | } | |
1546 | else | |
1547 | { | |
1548 | current_sym_addr = XEXP (DECL_RTL (decl), 0); | |
1549 | ||
f543676f | 1550 | letter = decl_function_context (decl) ? 'V' : 'S'; |
00fe048c RS |
1551 | |
1552 | if (!DECL_INITIAL (decl)) | |
1553 | current_sym_code = N_LCSYM; | |
1554 | else if (TREE_READONLY (decl) && ! TREE_THIS_VOLATILE (decl)) | |
1555 | /* This is not quite right, but it's the closest | |
1556 | of all the codes that Unix defines. */ | |
b372168c | 1557 | current_sym_code = DBX_STATIC_CONST_VAR_CODE; |
00fe048c RS |
1558 | else |
1559 | { | |
1560 | /* Ultrix `as' seems to need this. */ | |
1561 | #ifdef DBX_STATIC_STAB_DATA_SECTION | |
1562 | data_section (); | |
1563 | #endif | |
1564 | current_sym_code = N_STSYM; | |
1565 | } | |
1566 | } | |
1567 | } | |
1568 | else if (regno >= 0) | |
1569 | { | |
1570 | letter = 'r'; | |
1571 | current_sym_code = N_RSYM; | |
1572 | current_sym_value = DBX_REGISTER_NUMBER (regno); | |
1573 | } | |
1574 | else if (GET_CODE (DECL_RTL (decl)) == SUBREG) | |
1575 | { | |
1576 | rtx value = DECL_RTL (decl); | |
1577 | int offset = 0; | |
1578 | while (GET_CODE (value) == SUBREG) | |
1579 | { | |
1580 | offset += SUBREG_WORD (value); | |
1581 | value = SUBREG_REG (value); | |
1582 | } | |
1583 | letter = 'r'; | |
1584 | current_sym_code = N_RSYM; | |
1585 | current_sym_value = DBX_REGISTER_NUMBER (REGNO (value) + offset); | |
1586 | } | |
1587 | else if (GET_CODE (DECL_RTL (decl)) == MEM | |
1588 | && (GET_CODE (XEXP (DECL_RTL (decl), 0)) == MEM | |
1589 | || (GET_CODE (XEXP (DECL_RTL (decl), 0)) == REG | |
1590 | && REGNO (XEXP (DECL_RTL (decl), 0)) != FRAME_POINTER_REGNUM))) | |
1591 | /* If the value is indirect by memory or by a register | |
1592 | that isn't the frame pointer | |
1593 | then it means the object is variable-sized and address through | |
1594 | that register or stack slot. DBX has no way to represent this | |
1595 | so all we can do is output the variable as a pointer. | |
1596 | If it's not a parameter, ignore it. | |
1597 | (VAR_DECLs like this can be made by integrate.c.) */ | |
1598 | { | |
1599 | if (GET_CODE (XEXP (DECL_RTL (decl), 0)) == REG) | |
1600 | { | |
1601 | letter = 'r'; | |
1602 | current_sym_code = N_RSYM; | |
1603 | current_sym_value = DBX_REGISTER_NUMBER (REGNO (XEXP (DECL_RTL (decl), 0))); | |
1604 | } | |
1605 | else | |
1606 | { | |
1607 | current_sym_code = N_LSYM; | |
1608 | /* DECL_RTL looks like (MEM (MEM (PLUS (REG...) (CONST_INT...)))). | |
1609 | We want the value of that CONST_INT. */ | |
1610 | current_sym_value | |
1611 | = DEBUGGER_AUTO_OFFSET (XEXP (XEXP (DECL_RTL (decl), 0), 0)); | |
1612 | } | |
1613 | ||
1614 | /* Effectively do build_pointer_type, but don't cache this type, | |
1615 | since it might be temporary whereas the type it points to | |
1616 | might have been saved for inlining. */ | |
b113bb39 RS |
1617 | /* Don't use REFERENCE_TYPE because dbx can't handle that. */ |
1618 | type = make_node (POINTER_TYPE); | |
00fe048c RS |
1619 | TREE_TYPE (type) = TREE_TYPE (decl); |
1620 | } | |
1621 | else if (GET_CODE (DECL_RTL (decl)) == MEM | |
1622 | && GET_CODE (XEXP (DECL_RTL (decl), 0)) == REG) | |
1623 | { | |
1624 | current_sym_code = N_LSYM; | |
1625 | current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (DECL_RTL (decl), 0)); | |
1626 | } | |
1627 | else if (GET_CODE (DECL_RTL (decl)) == MEM | |
1628 | && GET_CODE (XEXP (DECL_RTL (decl), 0)) == PLUS | |
1629 | && GET_CODE (XEXP (XEXP (DECL_RTL (decl), 0), 1)) == CONST_INT) | |
1630 | { | |
1631 | current_sym_code = N_LSYM; | |
1632 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))) | |
1633 | We want the value of that CONST_INT. */ | |
1634 | current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (DECL_RTL (decl), 0)); | |
1635 | } | |
b372168c MM |
1636 | else if (GET_CODE (DECL_RTL (decl)) == MEM |
1637 | && GET_CODE (XEXP (DECL_RTL (decl), 0)) == CONST) | |
1638 | { | |
1639 | /* Handle an obscure case which can arise when optimizing and | |
1640 | when there are few available registers. (This is *always* | |
1641 | the case for i386/i486 targets). The DECL_RTL looks like | |
1642 | (MEM (CONST ...)) even though this variable is a local `auto' | |
1643 | or a local `register' variable. In effect, what has happened | |
1644 | is that the reload pass has seen that all assignments and | |
1645 | references for one such a local variable can be replaced by | |
1646 | equivalent assignments and references to some static storage | |
1647 | variable, thereby avoiding the need for a register. In such | |
1648 | cases we're forced to lie to debuggers and tell them that | |
1649 | this variable was itself `static'. */ | |
1650 | current_sym_code = N_LCSYM; | |
1651 | letter = 'V'; | |
1652 | current_sym_addr = XEXP (XEXP (DECL_RTL (decl), 0), 0); | |
1653 | } | |
00fe048c RS |
1654 | else |
1655 | /* Address might be a MEM, when DECL is a variable-sized object. | |
1656 | Or it might be const0_rtx, meaning previous passes | |
1657 | want us to ignore this variable. */ | |
1658 | break; | |
1659 | ||
1660 | /* Ok, start a symtab entry and output the variable name. */ | |
1661 | FORCE_TEXT; | |
b372168c MM |
1662 | |
1663 | #ifdef DBX_STATIC_BLOCK_START | |
1664 | DBX_STATIC_BLOCK_START (asmfile, current_sym_code); | |
1665 | #endif | |
1666 | ||
00fe048c RS |
1667 | /* One slight hitch: if this is a VAR_DECL which is a static |
1668 | class member, we must put out the mangled name instead of the | |
1669 | DECL_NAME. */ | |
1670 | { | |
1671 | char *name; | |
1672 | /* Note also that static member (variable) names DO NOT begin | |
1673 | with underscores in .stabs directives. */ | |
1674 | if (DECL_LANG_SPECIFIC (decl)) | |
3a7587e4 | 1675 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); |
00fe048c RS |
1676 | else |
1677 | name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
1678 | fprintf (asmfile, "%s \"%s:", ASM_STABS_OP, name); | |
1679 | } | |
1680 | if (letter) putc (letter, asmfile); | |
3a7587e4 | 1681 | dbxout_type (type, 0, 0); |
00fe048c | 1682 | dbxout_finish_symbol (decl); |
b372168c MM |
1683 | |
1684 | #ifdef DBX_STATIC_BLOCK_END | |
1685 | DBX_STATIC_BLOCK_END (asmfile, current_sym_code); | |
1686 | #endif | |
00fe048c RS |
1687 | break; |
1688 | } | |
1689 | } | |
1690 | ||
1691 | static void | |
1692 | dbxout_prepare_symbol (decl) | |
1693 | tree decl; | |
1694 | { | |
1695 | #ifdef WINNING_GDB | |
1696 | char *filename = DECL_SOURCE_FILE (decl); | |
1697 | ||
1698 | dbxout_source_file (asmfile, filename); | |
1699 | #endif | |
1700 | } | |
1701 | ||
1702 | static void | |
1703 | dbxout_finish_symbol (sym) | |
1704 | tree sym; | |
1705 | { | |
b372168c MM |
1706 | #ifdef DBX_FINISH_SYMBOL |
1707 | DBX_FINISH_SYMBOL (sym); | |
1708 | #else | |
00fe048c RS |
1709 | int line = 0; |
1710 | #ifdef WINNING_GDB | |
1711 | if (sym != 0) | |
1712 | line = DECL_SOURCE_LINE (sym); | |
1713 | #endif | |
b372168c | 1714 | |
00fe048c RS |
1715 | fprintf (asmfile, "\",%d,0,%d,", current_sym_code, line); |
1716 | if (current_sym_addr) | |
1717 | output_addr_const (asmfile, current_sym_addr); | |
1718 | else | |
1719 | fprintf (asmfile, "%d", current_sym_value); | |
1720 | putc ('\n', asmfile); | |
b372168c | 1721 | #endif |
00fe048c RS |
1722 | } |
1723 | ||
1724 | /* Output definitions of all the decls in a chain. */ | |
1725 | ||
b372168c | 1726 | void |
00fe048c RS |
1727 | dbxout_syms (syms) |
1728 | tree syms; | |
1729 | { | |
1730 | while (syms) | |
1731 | { | |
1732 | dbxout_symbol (syms, 1); | |
1733 | syms = TREE_CHAIN (syms); | |
1734 | } | |
1735 | } | |
1736 | \f | |
1737 | /* The following two functions output definitions of function parameters. | |
1738 | Each parameter gets a definition locating it in the parameter list. | |
1739 | Each parameter that is a register variable gets a second definition | |
1740 | locating it in the register. | |
1741 | ||
1742 | Printing or argument lists in gdb uses the definitions that | |
1743 | locate in the parameter list. But reference to the variable in | |
1744 | expressions uses preferentially the definition as a register. */ | |
1745 | ||
1746 | /* Output definitions, referring to storage in the parmlist, | |
1747 | of all the parms in PARMS, which is a chain of PARM_DECL nodes. */ | |
1748 | ||
b372168c | 1749 | void |
00fe048c RS |
1750 | dbxout_parms (parms) |
1751 | tree parms; | |
1752 | { | |
1753 | for (; parms; parms = TREE_CHAIN (parms)) | |
1754 | if (DECL_NAME (parms) && TREE_TYPE (parms) != error_mark_node) | |
1755 | { | |
1756 | dbxout_prepare_symbol (parms); | |
1757 | ||
1758 | /* Perform any necessary register eliminations on the parameter's rtl, | |
1759 | so that the debugging output will be accurate. */ | |
1760 | DECL_INCOMING_RTL (parms) | |
1761 | = eliminate_regs (DECL_INCOMING_RTL (parms), 0, 0); | |
1762 | DECL_RTL (parms) = eliminate_regs (DECL_RTL (parms), 0, 0); | |
1763 | #ifdef LEAF_REG_REMAP | |
1764 | if (leaf_function) | |
1765 | { | |
1766 | leaf_renumber_regs_insn (DECL_INCOMING_RTL (parms)); | |
1767 | leaf_renumber_regs_insn (DECL_RTL (parms)); | |
1768 | } | |
1769 | #endif | |
1770 | ||
1771 | if (PARM_PASSED_IN_MEMORY (parms)) | |
1772 | { | |
1773 | rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0); | |
1774 | ||
1775 | /* ??? Here we assume that the parm address is indexed | |
1776 | off the frame pointer or arg pointer. | |
1777 | If that is not true, we produce meaningless results, | |
1778 | but do not crash. */ | |
1779 | if (GET_CODE (addr) == PLUS | |
1780 | && GET_CODE (XEXP (addr, 1)) == CONST_INT) | |
1781 | current_sym_value = INTVAL (XEXP (addr, 1)); | |
1782 | else | |
1783 | current_sym_value = 0; | |
1784 | ||
1785 | current_sym_code = N_PSYM; | |
1786 | current_sym_addr = 0; | |
1787 | ||
1788 | FORCE_TEXT; | |
1789 | if (DECL_NAME (parms)) | |
1790 | { | |
1791 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms)); | |
1792 | ||
01e2750c RS |
1793 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
1794 | IDENTIFIER_POINTER (DECL_NAME (parms)), | |
1795 | DBX_MEMPARM_STABS_LETTER); | |
00fe048c RS |
1796 | } |
1797 | else | |
1798 | { | |
1799 | current_sym_nchars = 8; | |
01e2750c RS |
1800 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, |
1801 | DBX_MEMPARM_STABS_LETTER); | |
00fe048c RS |
1802 | } |
1803 | ||
1804 | if (GET_CODE (DECL_RTL (parms)) == REG | |
1805 | && REGNO (DECL_RTL (parms)) >= 0 | |
1806 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) | |
3a7587e4 | 1807 | dbxout_type (DECL_ARG_TYPE (parms), 0, 0); |
00fe048c RS |
1808 | else |
1809 | { | |
1810 | int original_value = current_sym_value; | |
1811 | ||
1812 | /* This is the case where the parm is passed as an int or double | |
1813 | and it is converted to a char, short or float and stored back | |
1814 | in the parmlist. In this case, describe the parm | |
1815 | with the variable's declared type, and adjust the address | |
1816 | if the least significant bytes (which we are using) are not | |
1817 | the first ones. */ | |
1818 | #if BYTES_BIG_ENDIAN | |
1819 | if (TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
1820 | current_sym_value += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
1821 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
1822 | #endif | |
1823 | ||
1824 | if (GET_CODE (DECL_RTL (parms)) == MEM | |
1825 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
1826 | && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT | |
1827 | && INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == current_sym_value) | |
3a7587e4 | 1828 | dbxout_type (TREE_TYPE (parms), 0, 0); |
00fe048c RS |
1829 | else |
1830 | { | |
1831 | current_sym_value = original_value; | |
3a7587e4 | 1832 | dbxout_type (DECL_ARG_TYPE (parms), 0, 0); |
00fe048c RS |
1833 | } |
1834 | } | |
1835 | current_sym_value = DEBUGGER_ARG_OFFSET (current_sym_value, addr); | |
1836 | dbxout_finish_symbol (parms); | |
1837 | } | |
1838 | else if (GET_CODE (DECL_RTL (parms)) == REG) | |
1839 | { | |
1840 | rtx best_rtl; | |
b372168c | 1841 | char regparm_letter; |
00fe048c RS |
1842 | /* Parm passed in registers and lives in registers or nowhere. */ |
1843 | ||
b372168c MM |
1844 | current_sym_code = DBX_REGPARM_STABS_CODE; |
1845 | regparm_letter = DBX_REGPARM_STABS_LETTER; | |
00fe048c RS |
1846 | current_sym_addr = 0; |
1847 | ||
1848 | /* If parm lives in a register, use that register; | |
1849 | pretend the parm was passed there. It would be more consistent | |
1850 | to describe the register where the parm was passed, | |
1851 | but in practice that register usually holds something else. */ | |
1852 | if (REGNO (DECL_RTL (parms)) >= 0 | |
1853 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER) | |
1854 | best_rtl = DECL_RTL (parms); | |
1855 | /* If the parm lives nowhere, | |
1856 | use the register where it was passed. */ | |
1857 | else | |
1858 | best_rtl = DECL_INCOMING_RTL (parms); | |
1859 | current_sym_value = DBX_REGISTER_NUMBER (REGNO (best_rtl)); | |
1860 | ||
1861 | FORCE_TEXT; | |
1862 | if (DECL_NAME (parms)) | |
1863 | { | |
1864 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms)); | |
b372168c MM |
1865 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
1866 | IDENTIFIER_POINTER (DECL_NAME (parms)), | |
1867 | regparm_letter); | |
00fe048c RS |
1868 | } |
1869 | else | |
1870 | { | |
1871 | current_sym_nchars = 8; | |
b372168c MM |
1872 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, |
1873 | regparm_letter); | |
00fe048c RS |
1874 | } |
1875 | ||
3a7587e4 | 1876 | dbxout_type (DECL_ARG_TYPE (parms), 0, 0); |
00fe048c RS |
1877 | dbxout_finish_symbol (parms); |
1878 | } | |
dad0145a RS |
1879 | else if (GET_CODE (DECL_RTL (parms)) == MEM |
1880 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG | |
1881 | && rtx_equal_p (XEXP (DECL_RTL (parms), 0), | |
1882 | DECL_INCOMING_RTL (parms))) | |
1883 | { | |
1884 | /* Parm was passed via invisible reference. | |
1885 | That is, its address was passed in a register. | |
1886 | Output it as if it lived in that register. | |
1887 | The debugger will know from the type | |
1888 | that it was actually passed by invisible reference. */ | |
1889 | ||
1890 | char regparm_letter; | |
1891 | /* Parm passed in registers and lives in registers or nowhere. */ | |
1892 | ||
1893 | current_sym_code = DBX_REGPARM_STABS_CODE; | |
1894 | regparm_letter = DBX_REGPARM_STABS_LETTER; | |
1895 | ||
1896 | /* DECL_RTL looks like (MEM (REG...). Get the register number. */ | |
1897 | current_sym_value = REGNO (XEXP (DECL_RTL (parms), 0)); | |
1898 | current_sym_addr = 0; | |
1899 | ||
1900 | FORCE_TEXT; | |
1901 | if (DECL_NAME (parms)) | |
1902 | { | |
1903 | current_sym_nchars = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms))); | |
1904 | ||
1905 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, | |
1906 | IDENTIFIER_POINTER (DECL_NAME (parms)), | |
1907 | DBX_REGPARM_STABS_LETTER); | |
1908 | } | |
1909 | else | |
1910 | { | |
1911 | current_sym_nchars = 8; | |
1912 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, | |
1913 | DBX_REGPARM_STABS_LETTER); | |
1914 | } | |
1915 | ||
1916 | dbxout_type (TREE_TYPE (parms), 0, 0); | |
1917 | dbxout_finish_symbol (parms); | |
1918 | } | |
00fe048c RS |
1919 | else if (GET_CODE (DECL_RTL (parms)) == MEM |
1920 | && XEXP (DECL_RTL (parms), 0) != const0_rtx) | |
1921 | { | |
1922 | /* Parm was passed in registers but lives on the stack. */ | |
1923 | ||
1924 | current_sym_code = N_PSYM; | |
1925 | /* DECL_RTL looks like (MEM (PLUS (REG...) (CONST_INT...))), | |
1926 | in which case we want the value of that CONST_INT, | |
1927 | or (MEM (REG ...)) or (MEM (MEM ...)), | |
1928 | in which case we use a value of zero. */ | |
1929 | if (GET_CODE (XEXP (DECL_RTL (parms), 0)) == REG | |
1930 | || GET_CODE (XEXP (DECL_RTL (parms), 0)) == MEM) | |
1931 | current_sym_value = 0; | |
1932 | else | |
1933 | current_sym_value = INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)); | |
1934 | current_sym_addr = 0; | |
1935 | ||
1936 | FORCE_TEXT; | |
1937 | if (DECL_NAME (parms)) | |
1938 | { | |
1939 | current_sym_nchars = 2 + strlen (IDENTIFIER_POINTER (DECL_NAME (parms))); | |
1940 | ||
01e2750c RS |
1941 | fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP, |
1942 | IDENTIFIER_POINTER (DECL_NAME (parms)), | |
1943 | DBX_MEMPARM_STABS_LETTER); | |
00fe048c RS |
1944 | } |
1945 | else | |
1946 | { | |
1947 | current_sym_nchars = 8; | |
01e2750c RS |
1948 | fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP, |
1949 | DBX_MEMPARM_STABS_LETTER); | |
00fe048c RS |
1950 | } |
1951 | ||
1952 | current_sym_value | |
1953 | = DEBUGGER_ARG_OFFSET (current_sym_value, | |
1954 | XEXP (DECL_RTL (parms), 0)); | |
3a7587e4 | 1955 | dbxout_type (TREE_TYPE (parms), 0, 0); |
00fe048c RS |
1956 | dbxout_finish_symbol (parms); |
1957 | } | |
1958 | } | |
1959 | } | |
1960 | ||
1961 | /* Output definitions for the places where parms live during the function, | |
1962 | when different from where they were passed, when the parms were passed | |
1963 | in memory. | |
1964 | ||
1965 | It is not useful to do this for parms passed in registers | |
1966 | that live during the function in different registers, because it is | |
1967 | impossible to look in the passed register for the passed value, | |
1968 | so we use the within-the-function register to begin with. | |
1969 | ||
1970 | PARMS is a chain of PARM_DECL nodes. */ | |
1971 | ||
b372168c | 1972 | void |
00fe048c RS |
1973 | dbxout_reg_parms (parms) |
1974 | tree parms; | |
1975 | { | |
1976 | for (; parms; parms = TREE_CHAIN (parms)) | |
1977 | if (DECL_NAME (parms)) | |
1978 | { | |
1979 | dbxout_prepare_symbol (parms); | |
1980 | ||
1981 | /* Report parms that live in registers during the function | |
1982 | but were passed in memory. */ | |
1983 | if (GET_CODE (DECL_RTL (parms)) == REG | |
1984 | && REGNO (DECL_RTL (parms)) >= 0 | |
1985 | && REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER | |
1986 | && PARM_PASSED_IN_MEMORY (parms)) | |
1987 | { | |
1988 | current_sym_code = N_RSYM; | |
1989 | current_sym_value = DBX_REGISTER_NUMBER (REGNO (DECL_RTL (parms))); | |
1990 | current_sym_addr = 0; | |
1991 | ||
1992 | FORCE_TEXT; | |
1993 | if (DECL_NAME (parms)) | |
1994 | { | |
1995 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms)); | |
1996 | fprintf (asmfile, "%s \"%s:r", ASM_STABS_OP, | |
1997 | IDENTIFIER_POINTER (DECL_NAME (parms))); | |
1998 | } | |
1999 | else | |
2000 | { | |
2001 | current_sym_nchars = 8; | |
2002 | fprintf (asmfile, "%s \"(anon):r", ASM_STABS_OP); | |
2003 | } | |
3a7587e4 | 2004 | dbxout_type (TREE_TYPE (parms), 0, 0); |
00fe048c RS |
2005 | dbxout_finish_symbol (parms); |
2006 | } | |
2007 | /* Report parms that live in memory but not where they were passed. */ | |
2008 | else if (GET_CODE (DECL_RTL (parms)) == MEM | |
2009 | && GET_CODE (XEXP (DECL_RTL (parms), 0)) == PLUS | |
2010 | && GET_CODE (XEXP (XEXP (DECL_RTL (parms), 0), 1)) == CONST_INT | |
2011 | && PARM_PASSED_IN_MEMORY (parms) | |
2012 | && ! rtx_equal_p (DECL_RTL (parms), DECL_INCOMING_RTL (parms))) | |
2013 | { | |
2014 | #if 0 /* ??? It is not clear yet what should replace this. */ | |
2015 | int offset = DECL_OFFSET (parms) / BITS_PER_UNIT; | |
2016 | /* A parm declared char is really passed as an int, | |
2017 | so it occupies the least significant bytes. | |
2018 | On a big-endian machine those are not the low-numbered ones. */ | |
2019 | #if BYTES_BIG_ENDIAN | |
2020 | if (offset != -1 && TREE_TYPE (parms) != DECL_ARG_TYPE (parms)) | |
2021 | offset += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms))) | |
2022 | - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms)))); | |
2023 | #endif | |
2024 | if (INTVAL (XEXP (XEXP (DECL_RTL (parms), 0), 1)) != offset) {...} | |
2025 | #endif | |
2026 | current_sym_code = N_LSYM; | |
2027 | current_sym_value = DEBUGGER_AUTO_OFFSET (XEXP (DECL_RTL (parms), 0)); | |
2028 | current_sym_addr = 0; | |
2029 | FORCE_TEXT; | |
2030 | if (DECL_NAME (parms)) | |
2031 | { | |
2032 | current_sym_nchars = 2 + IDENTIFIER_LENGTH (DECL_NAME (parms)); | |
2033 | fprintf (asmfile, "%s \"%s:", ASM_STABS_OP, | |
2034 | IDENTIFIER_POINTER (DECL_NAME (parms))); | |
2035 | } | |
2036 | else | |
2037 | { | |
2038 | current_sym_nchars = 8; | |
2039 | fprintf (asmfile, "%s \"(anon):", ASM_STABS_OP); | |
2040 | } | |
3a7587e4 | 2041 | dbxout_type (TREE_TYPE (parms), 0, 0); |
00fe048c RS |
2042 | dbxout_finish_symbol (parms); |
2043 | } | |
2044 | } | |
2045 | } | |
2046 | \f | |
2047 | /* Given a chain of ..._TYPE nodes (as come in a parameter list), | |
2048 | output definitions of those names, in raw form */ | |
2049 | ||
2050 | void | |
2051 | dbxout_args (args) | |
2052 | tree args; | |
2053 | { | |
2054 | while (args) | |
2055 | { | |
2056 | putc (',', asmfile); | |
3a7587e4 | 2057 | dbxout_type (TREE_VALUE (args), 0, 0); |
00fe048c RS |
2058 | CHARS (1); |
2059 | args = TREE_CHAIN (args); | |
2060 | } | |
2061 | } | |
2062 | \f | |
2063 | /* Given a chain of ..._TYPE nodes, | |
2064 | find those which have typedef names and output those names. | |
2065 | This is to ensure those types get output. */ | |
2066 | ||
2067 | void | |
2068 | dbxout_types (types) | |
2069 | register tree types; | |
2070 | { | |
2071 | while (types) | |
2072 | { | |
2073 | if (TYPE_NAME (types) | |
2074 | && TREE_CODE (TYPE_NAME (types)) == TYPE_DECL | |
2075 | && ! TREE_ASM_WRITTEN (TYPE_NAME (types))) | |
2076 | dbxout_symbol (TYPE_NAME (types), 1); | |
2077 | types = TREE_CHAIN (types); | |
2078 | } | |
2079 | } | |
2080 | \f | |
2081 | /* Output everything about a symbol block (a BLOCK node | |
2082 | that represents a scope level), | |
2083 | including recursive output of contained blocks. | |
2084 | ||
2085 | BLOCK is the BLOCK node. | |
2086 | DEPTH is its depth within containing symbol blocks. | |
2087 | ARGS is usually zero; but for the outermost block of the | |
2088 | body of a function, it is a chain of PARM_DECLs for the function parameters. | |
2089 | We output definitions of all the register parms | |
2090 | as if they were local variables of that block. | |
2091 | ||
2092 | If -g1 was used, we count blocks just the same, but output nothing | |
2093 | except for the outermost block. | |
2094 | ||
2095 | Actually, BLOCK may be several blocks chained together. | |
2096 | We handle them all in sequence. */ | |
2097 | ||
2098 | static void | |
2099 | dbxout_block (block, depth, args) | |
2100 | register tree block; | |
2101 | int depth; | |
2102 | tree args; | |
2103 | { | |
2104 | int blocknum; | |
2105 | ||
2106 | while (block) | |
2107 | { | |
2108 | /* Ignore blocks never expanded or otherwise marked as real. */ | |
2109 | if (TREE_USED (block)) | |
2110 | { | |
2111 | #ifndef DBX_LBRAC_FIRST | |
2112 | /* In dbx format, the syms of a block come before the N_LBRAC. */ | |
2113 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) | |
2114 | dbxout_syms (BLOCK_VARS (block)); | |
2115 | if (args) | |
2116 | dbxout_reg_parms (args); | |
2117 | #endif | |
2118 | ||
2119 | /* Now output an N_LBRAC symbol to represent the beginning of | |
2120 | the block. Use the block's tree-walk order to generate | |
2121 | the assembler symbols LBBn and LBEn | |
2122 | that final will define around the code in this block. */ | |
2123 | if (depth > 0 && debug_info_level != DINFO_LEVEL_TERSE) | |
2124 | { | |
2125 | char buf[20]; | |
2126 | blocknum = next_block_number++; | |
2127 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBB", blocknum); | |
2128 | ||
2129 | if (BLOCK_HANDLER_BLOCK (block)) | |
2130 | { | |
2131 | /* A catch block. Must precede N_LBRAC. */ | |
2132 | tree decl = BLOCK_VARS (block); | |
2133 | while (decl) | |
2134 | { | |
2135 | #ifdef DBX_OUTPUT_CATCH | |
2136 | DBX_OUTPUT_CATCH (asmfile, decl, buf); | |
2137 | #else | |
b372168c | 2138 | fprintf (asmfile, "%s \"%s:C1\",%d,0,0,", ASM_STABS_OP, |
00fe048c RS |
2139 | IDENTIFIER_POINTER (DECL_NAME (decl)), N_CATCH); |
2140 | assemble_name (asmfile, buf); | |
2141 | fprintf (asmfile, "\n"); | |
2142 | #endif | |
2143 | decl = TREE_CHAIN (decl); | |
2144 | } | |
2145 | } | |
2146 | ||
01e2750c RS |
2147 | #ifdef DBX_OUTPUT_LBRAC |
2148 | DBX_OUTPUT_LBRAC (asmfile, buf); | |
2149 | #else | |
00fe048c RS |
2150 | fprintf (asmfile, "%s %d,0,0,", ASM_STABN_OP, N_LBRAC); |
2151 | assemble_name (asmfile, buf); | |
2152 | fprintf (asmfile, "\n"); | |
01e2750c | 2153 | #endif |
00fe048c RS |
2154 | } |
2155 | else if (depth > 0) | |
2156 | /* Count blocks the same way regardless of debug_info_level. */ | |
2157 | next_block_number++; | |
2158 | ||
2159 | #ifdef DBX_LBRAC_FIRST | |
2160 | /* On some weird machines, the syms of a block | |
2161 | come after the N_LBRAC. */ | |
2162 | if (debug_info_level != DINFO_LEVEL_TERSE || depth == 0) | |
2163 | dbxout_syms (BLOCK_VARS (block)); | |
2164 | if (args) | |
2165 | dbxout_reg_parms (args); | |
2166 | #endif | |
2167 | ||
2168 | /* Output the subblocks. */ | |
2169 | dbxout_block (BLOCK_SUBBLOCKS (block), depth + 1, 0); | |
2170 | ||
2171 | /* Refer to the marker for the end of the block. */ | |
2172 | if (depth > 0 && debug_info_level != DINFO_LEVEL_TERSE) | |
2173 | { | |
2174 | char buf[20]; | |
2175 | ASM_GENERATE_INTERNAL_LABEL (buf, "LBE", blocknum); | |
01e2750c RS |
2176 | #ifdef DBX_OUTPUT_RBRAC |
2177 | DBX_OUTPUT_RBRAC (asmfile, buf); | |
2178 | #else | |
00fe048c RS |
2179 | fprintf (asmfile, "%s %d,0,0,", ASM_STABN_OP, N_RBRAC); |
2180 | assemble_name (asmfile, buf); | |
2181 | fprintf (asmfile, "\n"); | |
01e2750c | 2182 | #endif |
00fe048c RS |
2183 | } |
2184 | } | |
2185 | block = BLOCK_CHAIN (block); | |
2186 | } | |
2187 | } | |
2188 | ||
2189 | /* Output the information about a function and its arguments and result. | |
2190 | Usually this follows the function's code, | |
2191 | but on some systems, it comes before. */ | |
2192 | ||
2193 | static void | |
2194 | dbxout_really_begin_function (decl) | |
2195 | tree decl; | |
2196 | { | |
2197 | dbxout_symbol (decl, 0); | |
2198 | dbxout_parms (DECL_ARGUMENTS (decl)); | |
2199 | if (DECL_NAME (DECL_RESULT (decl)) != 0) | |
2200 | dbxout_symbol (DECL_RESULT (decl), 1); | |
2201 | } | |
2202 | ||
2203 | /* Called at beginning of output of function definition. */ | |
2204 | ||
2205 | void | |
2206 | dbxout_begin_function (decl) | |
2207 | tree decl; | |
2208 | { | |
2209 | #ifdef DBX_FUNCTION_FIRST | |
2210 | dbxout_really_begin_function (decl); | |
2211 | #endif | |
2212 | } | |
2213 | ||
2214 | /* Output dbx data for a function definition. | |
2215 | This includes a definition of the function name itself (a symbol), | |
2216 | definitions of the parameters (locating them in the parameter list) | |
2217 | and then output the block that makes up the function's body | |
2218 | (including all the auto variables of the function). */ | |
2219 | ||
2220 | void | |
2221 | dbxout_function (decl) | |
2222 | tree decl; | |
2223 | { | |
2224 | #ifndef DBX_FUNCTION_FIRST | |
2225 | dbxout_really_begin_function (decl); | |
2226 | #endif | |
2227 | dbxout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl)); | |
2228 | #ifdef DBX_OUTPUT_FUNCTION_END | |
2229 | DBX_OUTPUT_FUNCTION_END (asmfile, decl); | |
2230 | #endif | |
2231 | } | |
00fe048c | 2232 | #endif /* DBX_DEBUGGING_INFO */ |