Commit | Line | Data |
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a2f1e2e5 | 1 | /* Read a symbol table in ECOFF format (Third-Eye). |
436d4143 | 2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996 |
0434c1a0 | 3 | Free Software Foundation, Inc. |
a2f1e2e5 ILT |
4 | Original version contributed by Alessandro Forin (af@cs.cmu.edu) at |
5 | CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor | |
6 | at Cygnus Support. | |
7 | ||
8 | This file is part of GDB. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
6c9638b4 | 22 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
a2f1e2e5 ILT |
23 | |
24 | /* This module provides the function mdebug_build_psymtabs. It reads | |
25 | ECOFF debugging information into partial symbol tables. The | |
26 | debugging information is read from two structures. A struct | |
27 | ecoff_debug_swap includes the sizes of each ECOFF structure and | |
28 | swapping routines; these are fixed for a particular target. A | |
29 | struct ecoff_debug_info points to the debugging information for a | |
30 | particular object file. | |
31 | ||
32 | ECOFF symbol tables are mostly written in the byte order of the | |
33 | target machine. However, one section of the table (the auxiliary | |
34 | symbol information) is written in the host byte order. There is a | |
35 | bit in the other symbol info which describes which host byte order | |
36 | was used. ECOFF thereby takes the trophy from Intel `b.out' for | |
37 | the most brain-dead adaptation of a file format to byte order. | |
38 | ||
39 | This module can read all four of the known byte-order combinations, | |
40 | on any type of host. */ | |
41 | ||
42 | #include "defs.h" | |
43 | #include "symtab.h" | |
44 | #include "gdbtypes.h" | |
45 | #include "gdbcore.h" | |
46 | #include "symfile.h" | |
47 | #include "objfiles.h" | |
48 | #include "obstack.h" | |
49 | #include "buildsym.h" | |
50 | #include "stabsread.h" | |
51 | #include "complaints.h" | |
eae8aa30 | 52 | #include "demangle.h" |
a2f1e2e5 | 53 | |
a2f1e2e5 ILT |
54 | /* These are needed if the tm.h file does not contain the necessary |
55 | mips specific definitions. */ | |
56 | ||
57 | #ifndef MIPS_EFI_SYMBOL_NAME | |
58 | #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__" | |
8efb8079 | 59 | extern void ecoff_relocate_efi PARAMS ((struct symbol *, CORE_ADDR)); |
a2f1e2e5 ILT |
60 | #include "coff/sym.h" |
61 | #include "coff/symconst.h" | |
62 | typedef struct mips_extra_func_info { | |
63 | long numargs; | |
64 | PDR pdr; | |
65 | } *mips_extra_func_info_t; | |
66 | #ifndef RA_REGNUM | |
67 | #define RA_REGNUM 0 | |
68 | #endif | |
69 | #endif | |
70 | ||
71 | #ifdef USG | |
72 | #include <sys/types.h> | |
73 | #endif | |
74 | ||
2b576293 C |
75 | #include "gdb_stat.h" |
76 | #include "gdb_string.h" | |
a2f1e2e5 ILT |
77 | |
78 | #include "gdb-stabs.h" | |
79 | ||
80 | #include "bfd.h" | |
81 | ||
82 | #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */ | |
83 | ||
84 | #include "libaout.h" /* Private BFD a.out information. */ | |
85 | #include "aout/aout64.h" | |
86 | #include "aout/stab_gnu.h" /* STABS information */ | |
87 | ||
88 | #include "expression.h" | |
89 | #include "language.h" /* Needed inside partial-stab.h */ | |
90 | ||
91 | /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */ | |
92 | #ifndef ECOFF_REG_TO_REGNUM | |
93 | #define ECOFF_REG_TO_REGNUM(num) (num) | |
94 | #endif | |
989d9cba | 95 | \f |
f133a597 JK |
96 | /* We put a pointer to this structure in the read_symtab_private field |
97 | of the psymtab. */ | |
a2f1e2e5 ILT |
98 | |
99 | struct symloc | |
100 | { | |
989d9cba | 101 | /* Index of the FDR that this psymtab represents. */ |
a2f1e2e5 | 102 | int fdr_idx; |
989d9cba | 103 | /* The BFD that the psymtab was created from. */ |
a2f1e2e5 ILT |
104 | bfd *cur_bfd; |
105 | const struct ecoff_debug_swap *debug_swap; | |
106 | struct ecoff_debug_info *debug_info; | |
107 | struct mdebug_pending **pending_list; | |
989d9cba JK |
108 | /* Pointer to external symbols for this file. */ |
109 | EXTR *extern_tab; | |
110 | /* Size of extern_tab. */ | |
111 | int extern_count; | |
a2f1e2e5 ILT |
112 | enum language pst_language; |
113 | }; | |
114 | ||
989d9cba JK |
115 | #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private) |
116 | #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx) | |
117 | #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd) | |
118 | #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap) | |
119 | #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info) | |
120 | #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list) | |
121 | \f | |
a2f1e2e5 ILT |
122 | /* Things we import explicitly from other modules */ |
123 | ||
124 | extern int info_verbose; | |
125 | ||
126 | /* Various complaints about symbol reading that don't abort the process */ | |
127 | ||
128 | static struct complaint bad_file_number_complaint = | |
129 | {"bad file number %d", 0, 0}; | |
130 | ||
131 | static struct complaint index_complaint = | |
132 | {"bad aux index at symbol %s", 0, 0}; | |
133 | ||
134 | static struct complaint aux_index_complaint = | |
135 | {"bad proc end in aux found from symbol %s", 0, 0}; | |
136 | ||
137 | static struct complaint block_index_complaint = | |
138 | {"bad aux index at block symbol %s", 0, 0}; | |
139 | ||
140 | static struct complaint unknown_ext_complaint = | |
141 | {"unknown external symbol %s", 0, 0}; | |
142 | ||
143 | static struct complaint unknown_sym_complaint = | |
144 | {"unknown local symbol %s", 0, 0}; | |
145 | ||
146 | static struct complaint unknown_st_complaint = | |
147 | {"with type %d", 0, 0}; | |
148 | ||
149 | static struct complaint block_overflow_complaint = | |
150 | {"block containing %s overfilled", 0, 0}; | |
151 | ||
152 | static struct complaint basic_type_complaint = | |
153 | {"cannot map ECOFF basic type 0x%x for %s", 0, 0}; | |
154 | ||
155 | static struct complaint unknown_type_qual_complaint = | |
156 | {"unknown type qualifier 0x%x", 0, 0}; | |
157 | ||
158 | static struct complaint array_index_type_complaint = | |
159 | {"illegal array index type for %s, assuming int", 0, 0}; | |
160 | ||
161 | static struct complaint bad_tag_guess_complaint = | |
162 | {"guessed tag type of %s incorrectly", 0, 0}; | |
163 | ||
164 | static struct complaint block_member_complaint = | |
165 | {"declaration block contains unhandled symbol type %d", 0, 0}; | |
166 | ||
167 | static struct complaint stEnd_complaint = | |
168 | {"stEnd with storage class %d not handled", 0, 0}; | |
169 | ||
170 | static struct complaint unknown_mdebug_symtype_complaint = | |
171 | {"unknown symbol type 0x%x", 0, 0}; | |
172 | ||
173 | static struct complaint stab_unknown_complaint = | |
174 | {"unknown stabs symbol %s", 0, 0}; | |
175 | ||
176 | static struct complaint pdr_for_nonsymbol_complaint = | |
177 | {"PDR for %s, but no symbol", 0, 0}; | |
178 | ||
179 | static struct complaint pdr_static_symbol_complaint = | |
180 | {"can't handle PDR for static proc at 0x%lx", 0, 0}; | |
181 | ||
182 | static struct complaint bad_setjmp_pdr_complaint = | |
183 | {"fixing bad setjmp PDR from libc", 0, 0}; | |
184 | ||
185 | static struct complaint bad_fbitfield_complaint = | |
186 | {"can't handle TIR fBitfield for %s", 0, 0}; | |
187 | ||
188 | static struct complaint bad_continued_complaint = | |
189 | {"illegal TIR continued for %s", 0, 0}; | |
190 | ||
191 | static struct complaint bad_rfd_entry_complaint = | |
192 | {"bad rfd entry for %s: file %d, index %d", 0, 0}; | |
193 | ||
194 | static struct complaint unexpected_type_code_complaint = | |
195 | {"unexpected type code for %s", 0, 0}; | |
196 | ||
197 | static struct complaint unable_to_cross_ref_complaint = | |
198 | {"unable to cross ref btTypedef for %s", 0, 0}; | |
199 | ||
080868b4 PS |
200 | static struct complaint bad_indirect_xref_complaint = |
201 | {"unable to cross ref btIndirect for %s", 0, 0}; | |
202 | ||
a2f1e2e5 ILT |
203 | static struct complaint illegal_forward_tq0_complaint = |
204 | {"illegal tq0 in forward typedef for %s", 0, 0}; | |
205 | ||
206 | static struct complaint illegal_forward_bt_complaint = | |
207 | {"illegal bt %d in forward typedef for %s", 0, 0}; | |
208 | ||
209 | static struct complaint bad_linetable_guess_complaint = | |
210 | {"guessed size of linetable for %s incorrectly", 0, 0}; | |
211 | ||
212 | static struct complaint bad_ext_ifd_complaint = | |
213 | {"bad ifd for external symbol: %d (max %d)", 0, 0}; | |
214 | ||
215 | static struct complaint bad_ext_iss_complaint = | |
216 | {"bad iss for external symbol: %ld (max %ld)", 0, 0}; | |
217 | ||
218 | /* Macros and extra defs */ | |
219 | ||
220 | /* Puns: hard to find whether -g was used and how */ | |
221 | ||
222 | #define MIN_GLEVEL GLEVEL_0 | |
223 | #define compare_glevel(a,b) \ | |
224 | (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \ | |
225 | ((b) == GLEVEL_3) ? -1 : (int)((b) - (a))) | |
226 | \f | |
227 | /* Things that really are local to this module */ | |
228 | ||
229 | /* Remember what we deduced to be the source language of this psymtab. */ | |
230 | ||
231 | static enum language psymtab_language = language_unknown; | |
232 | ||
233 | /* Current BFD. */ | |
234 | ||
235 | static bfd *cur_bfd; | |
236 | ||
237 | /* How to parse debugging information for CUR_BFD. */ | |
238 | ||
239 | static const struct ecoff_debug_swap *debug_swap; | |
240 | ||
241 | /* Pointers to debugging information for CUR_BFD. */ | |
242 | ||
243 | static struct ecoff_debug_info *debug_info; | |
244 | ||
245 | /* Pointer to current file decriptor record, and its index */ | |
246 | ||
247 | static FDR *cur_fdr; | |
248 | static int cur_fd; | |
249 | ||
250 | /* Index of current symbol */ | |
251 | ||
252 | static int cur_sdx; | |
253 | ||
254 | /* Note how much "debuggable" this image is. We would like | |
255 | to see at least one FDR with full symbols */ | |
256 | ||
0db3fe94 PS |
257 | static int max_gdbinfo; |
258 | static int max_glevel; | |
a2f1e2e5 ILT |
259 | |
260 | /* When examining .o files, report on undefined symbols */ | |
261 | ||
262 | static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs; | |
263 | ||
264 | /* Pseudo symbol to use when putting stabs into the symbol table. */ | |
265 | ||
266 | static char stabs_symbol[] = STABS_SYMBOL; | |
267 | ||
bbcc95bd PS |
268 | /* Types corresponding to mdebug format bt* basic types. */ |
269 | ||
270 | static struct type *mdebug_type_void; | |
271 | static struct type *mdebug_type_char; | |
272 | static struct type *mdebug_type_short; | |
273 | static struct type *mdebug_type_int_32; | |
274 | #define mdebug_type_int mdebug_type_int_32 | |
275 | static struct type *mdebug_type_int_64; | |
276 | static struct type *mdebug_type_long_32; | |
277 | static struct type *mdebug_type_long_64; | |
278 | static struct type *mdebug_type_long_long_64; | |
279 | static struct type *mdebug_type_unsigned_char; | |
280 | static struct type *mdebug_type_unsigned_short; | |
281 | static struct type *mdebug_type_unsigned_int_32; | |
282 | static struct type *mdebug_type_unsigned_int_64; | |
283 | static struct type *mdebug_type_unsigned_long_32; | |
284 | static struct type *mdebug_type_unsigned_long_64; | |
285 | static struct type *mdebug_type_unsigned_long_long_64; | |
286 | static struct type *mdebug_type_adr_32; | |
287 | static struct type *mdebug_type_adr_64; | |
288 | static struct type *mdebug_type_float; | |
289 | static struct type *mdebug_type_double; | |
290 | static struct type *mdebug_type_complex; | |
291 | static struct type *mdebug_type_double_complex; | |
504ccfd7 JK |
292 | static struct type *mdebug_type_fixed_dec; |
293 | static struct type *mdebug_type_float_dec; | |
294 | static struct type *mdebug_type_string; | |
a2f1e2e5 | 295 | |
41270571 PS |
296 | /* Types for symbols from files compiled without debugging info. */ |
297 | ||
298 | static struct type *nodebug_func_symbol_type; | |
299 | static struct type *nodebug_var_symbol_type; | |
300 | ||
301 | /* Nonzero if we have seen ecoff debugging info for a file. */ | |
302 | ||
303 | static int found_ecoff_debugging_info; | |
304 | ||
a2f1e2e5 ILT |
305 | /* Forward declarations */ |
306 | ||
b607efe7 FF |
307 | static void |
308 | add_pending PARAMS ((FDR *, char *, struct type *)); | |
309 | ||
310 | static struct mdebug_pending * | |
311 | is_pending_symbol PARAMS ((FDR *, char *)); | |
312 | ||
313 | static void | |
314 | pop_parse_stack PARAMS ((void)); | |
315 | ||
316 | static void | |
317 | push_parse_stack PARAMS ((void)); | |
318 | ||
319 | static char * | |
320 | fdr_name PARAMS ((FDR *)); | |
321 | ||
322 | static void | |
323 | mdebug_psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
324 | ||
a2f1e2e5 ILT |
325 | static int |
326 | upgrade_type PARAMS ((int, struct type **, int, union aux_ext *, int, char *)); | |
327 | ||
328 | static void | |
329 | parse_partial_symbols PARAMS ((struct objfile *, | |
330 | struct section_offsets *)); | |
331 | ||
332 | static FDR | |
333 | *get_rfd PARAMS ((int, int)); | |
334 | ||
db2302cb PS |
335 | static int |
336 | has_opaque_xref PARAMS ((FDR *, SYMR *)); | |
337 | ||
a2f1e2e5 ILT |
338 | static int |
339 | cross_ref PARAMS ((int, union aux_ext *, struct type **, enum type_code, | |
340 | char **, int, char *)); | |
341 | ||
342 | static struct symbol * | |
343 | new_symbol PARAMS ((char *)); | |
344 | ||
345 | static struct type * | |
346 | new_type PARAMS ((char *)); | |
347 | ||
348 | static struct block * | |
349 | new_block PARAMS ((int)); | |
350 | ||
351 | static struct symtab * | |
352 | new_symtab PARAMS ((char *, int, int, struct objfile *)); | |
353 | ||
354 | static struct linetable * | |
355 | new_linetable PARAMS ((int)); | |
356 | ||
357 | static struct blockvector * | |
358 | new_bvect PARAMS ((int)); | |
359 | ||
360 | static int | |
72bba93b | 361 | parse_symbol PARAMS ((SYMR *, union aux_ext *, char *, int, struct section_offsets *)); |
a2f1e2e5 ILT |
362 | |
363 | static struct type * | |
364 | parse_type PARAMS ((int, union aux_ext *, unsigned int, int *, int, char *)); | |
365 | ||
366 | static struct symbol * | |
1750a5ef | 367 | mylookup_symbol PARAMS ((char *, struct block *, namespace_enum, |
a2f1e2e5 ILT |
368 | enum address_class)); |
369 | ||
370 | static struct block * | |
371 | shrink_block PARAMS ((struct block *, struct symtab *)); | |
372 | ||
373 | static PTR | |
374 | xzalloc PARAMS ((unsigned int)); | |
375 | ||
376 | static void | |
377 | sort_blocks PARAMS ((struct symtab *)); | |
378 | ||
379 | static int | |
380 | compare_blocks PARAMS ((const void *, const void *)); | |
381 | ||
382 | static struct partial_symtab * | |
847d9775 | 383 | new_psymtab PARAMS ((char *, struct objfile *, struct section_offsets *)); |
a2f1e2e5 ILT |
384 | |
385 | static void | |
386 | psymtab_to_symtab_1 PARAMS ((struct partial_symtab *, char *)); | |
387 | ||
388 | static void | |
389 | add_block PARAMS ((struct block *, struct symtab *)); | |
390 | ||
391 | static void | |
392 | add_symbol PARAMS ((struct symbol *, struct block *)); | |
393 | ||
394 | static int | |
395 | add_line PARAMS ((struct linetable *, int, CORE_ADDR, int)); | |
396 | ||
397 | static struct linetable * | |
398 | shrink_linetable PARAMS ((struct linetable *)); | |
399 | ||
847d9775 | 400 | static void |
9b041f69 | 401 | handle_psymbol_enumerators PARAMS ((struct objfile *, FDR *, int, CORE_ADDR)); |
847d9775 | 402 | |
a2f1e2e5 | 403 | static char * |
2dd30c72 | 404 | mdebug_next_symbol_text PARAMS ((struct objfile *)); |
a2f1e2e5 ILT |
405 | \f |
406 | /* Address bounds for the signal trampoline in inferior, if any */ | |
407 | ||
408 | CORE_ADDR sigtramp_address, sigtramp_end; | |
409 | ||
410 | /* Allocate zeroed memory */ | |
411 | ||
412 | static PTR | |
413 | xzalloc (size) | |
414 | unsigned int size; | |
415 | { | |
416 | PTR p = xmalloc (size); | |
417 | ||
418 | memset (p, 0, size); | |
419 | return p; | |
420 | } | |
421 | ||
422 | /* Exported procedure: Builds a symtab from the PST partial one. | |
423 | Restores the environment in effect when PST was created, delegates | |
424 | most of the work to an ancillary procedure, and sorts | |
425 | and reorders the symtab list at the end */ | |
426 | ||
427 | static void | |
428 | mdebug_psymtab_to_symtab (pst) | |
429 | struct partial_symtab *pst; | |
430 | { | |
431 | ||
432 | if (!pst) | |
433 | return; | |
434 | ||
435 | if (info_verbose) | |
436 | { | |
437 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
438 | gdb_flush (gdb_stdout); | |
439 | } | |
440 | ||
441 | next_symbol_text_func = mdebug_next_symbol_text; | |
442 | ||
443 | psymtab_to_symtab_1 (pst, pst->filename); | |
444 | ||
445 | /* Match with global symbols. This only needs to be done once, | |
446 | after all of the symtabs and dependencies have been read in. */ | |
447 | scan_file_globals (pst->objfile); | |
448 | ||
449 | if (info_verbose) | |
450 | printf_filtered ("done.\n"); | |
451 | } | |
452 | \f | |
453 | /* File-level interface functions */ | |
454 | ||
455 | /* Find a file descriptor given its index RF relative to a file CF */ | |
456 | ||
457 | static FDR * | |
458 | get_rfd (cf, rf) | |
459 | int cf, rf; | |
460 | { | |
461 | FDR *fdrs; | |
462 | register FDR *f; | |
463 | RFDT rfd; | |
464 | ||
465 | fdrs = debug_info->fdr; | |
466 | f = fdrs + cf; | |
467 | /* Object files do not have the RFD table, all refs are absolute */ | |
468 | if (f->rfdBase == 0) | |
469 | return fdrs + rf; | |
470 | (*debug_swap->swap_rfd_in) (cur_bfd, | |
471 | ((char *) debug_info->external_rfd | |
472 | + ((f->rfdBase + rf) | |
473 | * debug_swap->external_rfd_size)), | |
474 | &rfd); | |
475 | return fdrs + rfd; | |
476 | } | |
477 | ||
478 | /* Return a safer print NAME for a file descriptor */ | |
479 | ||
480 | static char * | |
481 | fdr_name (f) | |
482 | FDR *f; | |
483 | { | |
484 | if (f->rss == -1) | |
485 | return "<stripped file>"; | |
486 | if (f->rss == 0) | |
487 | return "<NFY>"; | |
488 | return debug_info->ss + f->issBase + f->rss; | |
489 | } | |
490 | ||
491 | ||
492 | /* Read in and parse the symtab of the file OBJFILE. Symbols from | |
493 | different sections are relocated via the SECTION_OFFSETS. */ | |
494 | ||
495 | void | |
496 | mdebug_build_psymtabs (objfile, swap, info, section_offsets) | |
497 | struct objfile *objfile; | |
498 | const struct ecoff_debug_swap *swap; | |
499 | struct ecoff_debug_info *info; | |
500 | struct section_offsets *section_offsets; | |
501 | { | |
502 | cur_bfd = objfile->obfd; | |
503 | debug_swap = swap; | |
504 | debug_info = info; | |
505 | ||
506 | /* Make sure all the FDR information is swapped in. */ | |
507 | if (info->fdr == (FDR *) NULL) | |
508 | { | |
509 | char *fdr_src; | |
510 | char *fdr_end; | |
511 | FDR *fdr_ptr; | |
512 | ||
513 | info->fdr = (FDR *) obstack_alloc (&objfile->psymbol_obstack, | |
514 | (info->symbolic_header.ifdMax | |
515 | * sizeof (FDR))); | |
516 | fdr_src = info->external_fdr; | |
517 | fdr_end = (fdr_src | |
518 | + info->symbolic_header.ifdMax * swap->external_fdr_size); | |
519 | fdr_ptr = info->fdr; | |
520 | for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++) | |
521 | (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr); | |
522 | } | |
523 | ||
524 | parse_partial_symbols (objfile, section_offsets); | |
525 | ||
526 | #if 0 | |
527 | /* Check to make sure file was compiled with -g. If not, warn the | |
528 | user of this limitation. */ | |
529 | if (compare_glevel (max_glevel, GLEVEL_2) < 0) | |
530 | { | |
531 | if (max_gdbinfo == 0) | |
532 | printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n", | |
533 | objfile->name); | |
534 | printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n"); | |
535 | gdb_flush (gdb_stdout); | |
536 | } | |
537 | #endif | |
538 | } | |
539 | \f | |
540 | /* Local utilities */ | |
541 | ||
542 | /* Map of FDR indexes to partial symtabs */ | |
543 | ||
544 | struct pst_map | |
545 | { | |
546 | struct partial_symtab *pst; /* the psymtab proper */ | |
547 | long n_globals; /* exported globals (external symbols) */ | |
548 | long globals_offset; /* cumulative */ | |
549 | }; | |
550 | ||
551 | ||
552 | /* Utility stack, used to nest procedures and blocks properly. | |
553 | It is a doubly linked list, to avoid too many alloc/free. | |
554 | Since we might need it quite a few times it is NOT deallocated | |
555 | after use. */ | |
556 | ||
557 | static struct parse_stack | |
558 | { | |
559 | struct parse_stack *next, *prev; | |
560 | struct symtab *cur_st; /* Current symtab. */ | |
561 | struct block *cur_block; /* Block in it. */ | |
562 | ||
563 | /* What are we parsing. stFile, or stBlock are for files and | |
564 | blocks. stProc or stStaticProc means we have seen the start of a | |
565 | procedure, but not the start of the block within in. When we see | |
566 | the start of that block, we change it to stNil, without pushing a | |
567 | new block, i.e. stNil means both a procedure and a block. */ | |
568 | ||
569 | int blocktype; | |
570 | ||
571 | int maxsyms; /* Max symbols in this block. */ | |
572 | struct type *cur_type; /* Type we parse fields for. */ | |
573 | int cur_field; /* Field number in cur_type. */ | |
574 | CORE_ADDR procadr; /* Start addres of this procedure */ | |
575 | int numargs; /* Its argument count */ | |
576 | } | |
577 | ||
578 | *top_stack; /* Top stack ptr */ | |
579 | ||
580 | ||
581 | /* Enter a new lexical context */ | |
582 | ||
583 | static void | |
584 | push_parse_stack () | |
585 | { | |
586 | struct parse_stack *new; | |
587 | ||
588 | /* Reuse frames if possible */ | |
589 | if (top_stack && top_stack->prev) | |
590 | new = top_stack->prev; | |
591 | else | |
592 | new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack)); | |
593 | /* Initialize new frame with previous content */ | |
594 | if (top_stack) | |
595 | { | |
596 | register struct parse_stack *prev = new->prev; | |
597 | ||
598 | *new = *top_stack; | |
599 | top_stack->prev = new; | |
600 | new->prev = prev; | |
601 | new->next = top_stack; | |
602 | } | |
603 | top_stack = new; | |
604 | } | |
605 | ||
606 | /* Exit a lexical context */ | |
607 | ||
608 | static void | |
609 | pop_parse_stack () | |
610 | { | |
611 | if (!top_stack) | |
612 | return; | |
613 | if (top_stack->next) | |
614 | top_stack = top_stack->next; | |
615 | } | |
616 | ||
617 | ||
618 | /* Cross-references might be to things we haven't looked at | |
619 | yet, e.g. type references. To avoid too many type | |
620 | duplications we keep a quick fixup table, an array | |
621 | of lists of references indexed by file descriptor */ | |
622 | ||
623 | struct mdebug_pending | |
624 | { | |
625 | struct mdebug_pending *next; /* link */ | |
626 | char *s; /* the unswapped symbol */ | |
627 | struct type *t; /* its partial type descriptor */ | |
628 | }; | |
629 | ||
630 | ||
631 | /* The pending information is kept for an entire object file, and used | |
632 | to be in the sym_private field. I took it out when I split | |
633 | mdebugread from mipsread, because this might not be the only type | |
634 | of symbols read from an object file. Instead, we allocate the | |
635 | pending information table when we create the partial symbols, and | |
636 | we store a pointer to the single table in each psymtab. */ | |
637 | ||
638 | static struct mdebug_pending **pending_list; | |
639 | ||
640 | /* Check whether we already saw symbol SH in file FH */ | |
641 | ||
642 | static struct mdebug_pending * | |
643 | is_pending_symbol (fh, sh) | |
644 | FDR *fh; | |
645 | char *sh; | |
646 | { | |
647 | int f_idx = fh - debug_info->fdr; | |
648 | register struct mdebug_pending *p; | |
649 | ||
650 | /* Linear search is ok, list is typically no more than 10 deep */ | |
651 | for (p = pending_list[f_idx]; p; p = p->next) | |
652 | if (p->s == sh) | |
653 | break; | |
654 | return p; | |
655 | } | |
656 | ||
657 | /* Add a new symbol SH of type T */ | |
658 | ||
659 | static void | |
660 | add_pending (fh, sh, t) | |
661 | FDR *fh; | |
662 | char *sh; | |
663 | struct type *t; | |
664 | { | |
665 | int f_idx = fh - debug_info->fdr; | |
666 | struct mdebug_pending *p = is_pending_symbol (fh, sh); | |
667 | ||
668 | /* Make sure we do not make duplicates */ | |
669 | if (!p) | |
670 | { | |
671 | p = ((struct mdebug_pending *) | |
672 | obstack_alloc (¤t_objfile->psymbol_obstack, | |
673 | sizeof (struct mdebug_pending))); | |
674 | p->s = sh; | |
675 | p->t = t; | |
676 | p->next = pending_list[f_idx]; | |
677 | pending_list[f_idx] = p; | |
678 | } | |
679 | } | |
680 | \f | |
681 | ||
682 | /* Parsing Routines proper. */ | |
683 | ||
684 | /* Parse a single symbol. Mostly just make up a GDB symbol for it. | |
685 | For blocks, procedures and types we open a new lexical context. | |
686 | This is basically just a big switch on the symbol's type. Argument | |
687 | AX is the base pointer of aux symbols for this file (fh->iauxBase). | |
688 | EXT_SH points to the unswapped symbol, which is needed for struct, | |
689 | union, etc., types; it is NULL for an EXTR. BIGEND says whether | |
690 | aux symbols are big-endian or little-endian. Return count of | |
691 | SYMR's handled (normally one). */ | |
692 | ||
693 | static int | |
72bba93b | 694 | parse_symbol (sh, ax, ext_sh, bigend, section_offsets) |
a2f1e2e5 ILT |
695 | SYMR *sh; |
696 | union aux_ext *ax; | |
697 | char *ext_sh; | |
698 | int bigend; | |
72bba93b | 699 | struct section_offsets *section_offsets; |
a2f1e2e5 ILT |
700 | { |
701 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
702 | void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) = | |
703 | debug_swap->swap_sym_in; | |
704 | char *name; | |
705 | struct symbol *s; | |
706 | struct block *b; | |
707 | struct mdebug_pending *pend; | |
708 | struct type *t; | |
709 | struct field *f; | |
710 | int count = 1; | |
711 | enum address_class class; | |
712 | TIR tir; | |
713 | long svalue = sh->value; | |
714 | int bitsize; | |
715 | ||
716 | if (ext_sh == (char *) NULL) | |
717 | name = debug_info->ssext + sh->iss; | |
718 | else | |
719 | name = debug_info->ss + cur_fdr->issBase + sh->iss; | |
720 | ||
72bba93b SG |
721 | switch (sh->sc) |
722 | { | |
723 | case scText: | |
73b8e6a9 | 724 | case scRConst: |
943b7032 PS |
725 | /* Do not relocate relative values. |
726 | The value of a stEnd symbol is the displacement from the | |
727 | corresponding start symbol value. | |
728 | The value of a stBlock symbol is the displacement from the | |
729 | procedure address. */ | |
730 | if (sh->st != stEnd && sh->st != stBlock) | |
33c66e44 | 731 | sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
72bba93b SG |
732 | break; |
733 | case scData: | |
33c66e44 PS |
734 | case scSData: |
735 | case scRData: | |
736 | case scPData: | |
737 | case scXData: | |
72bba93b SG |
738 | sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA); |
739 | break; | |
740 | case scBss: | |
33c66e44 | 741 | case scSBss: |
72bba93b SG |
742 | sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS); |
743 | break; | |
744 | } | |
745 | ||
a2f1e2e5 ILT |
746 | switch (sh->st) |
747 | { | |
748 | case stNil: | |
749 | break; | |
750 | ||
751 | case stGlobal: /* external symbol, goes into global block */ | |
752 | class = LOC_STATIC; | |
753 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
754 | GLOBAL_BLOCK); | |
755 | s = new_symbol (name); | |
756 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
757 | goto data; | |
758 | ||
759 | case stStatic: /* static data, goes into current block. */ | |
760 | class = LOC_STATIC; | |
761 | b = top_stack->cur_block; | |
762 | s = new_symbol (name); | |
54d478cd | 763 | if (sh->sc == scCommon || sh->sc == scSCommon) |
a2f1e2e5 ILT |
764 | { |
765 | /* It is a FORTRAN common block. At least for SGI Fortran the | |
766 | address is not in the symbol; we need to fix it later in | |
767 | scan_file_globals. */ | |
768 | int bucket = hashname (SYMBOL_NAME (s)); | |
769 | SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket]; | |
770 | global_sym_chain[bucket] = s; | |
771 | } | |
772 | else | |
773 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
774 | goto data; | |
775 | ||
776 | case stLocal: /* local variable, goes into current block */ | |
777 | if (sh->sc == scRegister) | |
778 | { | |
779 | class = LOC_REGISTER; | |
780 | svalue = ECOFF_REG_TO_REGNUM (svalue); | |
781 | } | |
782 | else | |
783 | class = LOC_LOCAL; | |
784 | b = top_stack->cur_block; | |
785 | s = new_symbol (name); | |
786 | SYMBOL_VALUE (s) = svalue; | |
787 | ||
788 | data: /* Common code for symbols describing data */ | |
789 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
790 | SYMBOL_CLASS (s) = class; | |
791 | add_symbol (s, b); | |
792 | ||
41270571 | 793 | /* Type could be missing if file is compiled without debugging info. */ |
73b8e6a9 PS |
794 | if (sh->sc == scUndefined || sh->sc == scSUndefined |
795 | || sh->sc == scNil || sh->index == indexNil) | |
41270571 | 796 | SYMBOL_TYPE (s) = nodebug_var_symbol_type; |
a2f1e2e5 ILT |
797 | else |
798 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
799 | /* Value of a data symbol is its memory address */ | |
800 | break; | |
801 | ||
802 | case stParam: /* arg to procedure, goes into current block */ | |
803 | max_gdbinfo++; | |
41270571 | 804 | found_ecoff_debugging_info = 1; |
a2f1e2e5 ILT |
805 | top_stack->numargs++; |
806 | ||
807 | /* Special GNU C++ name. */ | |
81afee37 | 808 | if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0) |
a2f1e2e5 ILT |
809 | name = "this"; /* FIXME, not alloc'd in obstack */ |
810 | s = new_symbol (name); | |
811 | ||
812 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
813 | switch (sh->sc) | |
814 | { | |
815 | case scRegister: | |
816 | /* Pass by value in register. */ | |
817 | SYMBOL_CLASS(s) = LOC_REGPARM; | |
818 | svalue = ECOFF_REG_TO_REGNUM (svalue); | |
819 | break; | |
820 | case scVar: | |
821 | /* Pass by reference on stack. */ | |
822 | SYMBOL_CLASS(s) = LOC_REF_ARG; | |
823 | break; | |
824 | case scVarRegister: | |
825 | /* Pass by reference in register. */ | |
826 | SYMBOL_CLASS(s) = LOC_REGPARM_ADDR; | |
827 | svalue = ECOFF_REG_TO_REGNUM (svalue); | |
828 | break; | |
829 | default: | |
830 | /* Pass by value on stack. */ | |
831 | SYMBOL_CLASS(s) = LOC_ARG; | |
832 | break; | |
833 | } | |
834 | SYMBOL_VALUE (s) = svalue; | |
835 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
836 | add_symbol (s, top_stack->cur_block); | |
a2f1e2e5 ILT |
837 | break; |
838 | ||
839 | case stLabel: /* label, goes into current block */ | |
840 | s = new_symbol (name); | |
841 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; /* so that it can be used */ | |
842 | SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */ | |
843 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
bbcc95bd | 844 | SYMBOL_TYPE (s) = mdebug_type_int; |
a2f1e2e5 ILT |
845 | add_symbol (s, top_stack->cur_block); |
846 | break; | |
847 | ||
848 | case stProc: /* Procedure, usually goes into global block */ | |
849 | case stStaticProc: /* Static procedure, goes into current block */ | |
850 | s = new_symbol (name); | |
851 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
852 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
853 | /* Type of the return value */ | |
73b8e6a9 | 854 | if (sh->sc == scUndefined || sh->sc == scSUndefined || sh->sc == scNil) |
bbcc95bd | 855 | t = mdebug_type_int; |
a2f1e2e5 | 856 | else |
9391c997 FF |
857 | { |
858 | t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name); | |
859 | if (STREQ(name, "malloc") && t->code == TYPE_CODE_VOID) | |
860 | { | |
861 | /* I don't know why, but, at least under Linux/Alpha, | |
862 | when linking against a malloc without debugging | |
863 | symbols, its read as a function returning void---this | |
864 | is bad because it means we cannot call functions with | |
865 | string arguments interactively; i.e., "call | |
866 | printf("howdy\n")" would fail with the error message | |
867 | "program has no memory available". To avoid this, we | |
868 | patch up the type and make it void* | |
869 | instead. (davidm@azstarnet.com) | |
870 | */ | |
91d12e12 | 871 | t = make_pointer_type (t, NULL); |
9391c997 FF |
872 | } |
873 | } | |
a2f1e2e5 ILT |
874 | b = top_stack->cur_block; |
875 | if (sh->st == stProc) | |
876 | { | |
877 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
878 | /* The next test should normally be true, but provides a | |
879 | hook for nested functions (which we don't want to make | |
880 | global). */ | |
881 | if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) | |
882 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
883 | /* Irix 5 sometimes has duplicate names for the same | |
884 | function. We want to add such names up at the global | |
885 | level, not as a nested function. */ | |
886 | else if (sh->value == top_stack->procadr) | |
887 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
888 | } | |
889 | add_symbol (s, b); | |
890 | ||
891 | /* Make a type for the procedure itself */ | |
a2f1e2e5 | 892 | SYMBOL_TYPE (s) = lookup_function_type (t); |
a2f1e2e5 ILT |
893 | |
894 | /* Create and enter a new lexical context */ | |
895 | b = new_block (top_stack->maxsyms); | |
896 | SYMBOL_BLOCK_VALUE (s) = b; | |
897 | BLOCK_FUNCTION (b) = s; | |
898 | BLOCK_START (b) = BLOCK_END (b) = sh->value; | |
899 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
900 | add_block (b, top_stack->cur_st); | |
901 | ||
902 | /* Not if we only have partial info */ | |
73b8e6a9 | 903 | if (sh->sc == scUndefined || sh->sc == scSUndefined || sh->sc == scNil) |
a2f1e2e5 ILT |
904 | break; |
905 | ||
906 | push_parse_stack (); | |
907 | top_stack->cur_block = b; | |
908 | top_stack->blocktype = sh->st; | |
909 | top_stack->cur_type = SYMBOL_TYPE (s); | |
910 | top_stack->cur_field = -1; | |
911 | top_stack->procadr = sh->value; | |
912 | top_stack->numargs = 0; | |
913 | break; | |
914 | ||
915 | /* Beginning of code for structure, union, and enum definitions. | |
916 | They all share a common set of local variables, defined here. */ | |
917 | { | |
918 | enum type_code type_code; | |
919 | char *ext_tsym; | |
920 | int nfields; | |
921 | long max_value; | |
922 | struct field *f; | |
923 | ||
924 | case stStruct: /* Start a block defining a struct type */ | |
925 | type_code = TYPE_CODE_STRUCT; | |
926 | goto structured_common; | |
927 | ||
928 | case stUnion: /* Start a block defining a union type */ | |
929 | type_code = TYPE_CODE_UNION; | |
930 | goto structured_common; | |
931 | ||
932 | case stEnum: /* Start a block defining an enum type */ | |
933 | type_code = TYPE_CODE_ENUM; | |
934 | goto structured_common; | |
935 | ||
936 | case stBlock: /* Either a lexical block, or some type */ | |
54d478cd | 937 | if (sh->sc != scInfo && sh->sc != scCommon && sh->sc != scSCommon) |
a2f1e2e5 ILT |
938 | goto case_stBlock_code; /* Lexical block */ |
939 | ||
940 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ | |
941 | ||
942 | /* Common code for handling struct, union, enum, and/or as-yet- | |
943 | unknown-type blocks of info about structured data. `type_code' | |
944 | has been set to the proper TYPE_CODE, if we know it. */ | |
945 | structured_common: | |
41270571 | 946 | found_ecoff_debugging_info = 1; |
a2f1e2e5 ILT |
947 | push_parse_stack (); |
948 | top_stack->blocktype = stBlock; | |
949 | ||
950 | /* First count the number of fields and the highest value. */ | |
951 | nfields = 0; | |
952 | max_value = 0; | |
953 | for (ext_tsym = ext_sh + external_sym_size; | |
954 | ; | |
955 | ext_tsym += external_sym_size) | |
956 | { | |
957 | SYMR tsym; | |
958 | ||
959 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
960 | ||
961 | switch (tsym.st) | |
962 | { | |
963 | case stEnd: | |
964 | goto end_of_fields; | |
965 | ||
966 | case stMember: | |
967 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) | |
968 | /* If the type of the member is Nil (or Void), | |
969 | without qualifiers, assume the tag is an | |
9b041f69 PS |
970 | enumeration. |
971 | Alpha cc -migrate enums are recognized by a zero | |
972 | index and a zero symbol value. */ | |
973 | if (tsym.index == indexNil | |
974 | || (tsym.index == 0 && sh->value == 0)) | |
a2f1e2e5 ILT |
975 | type_code = TYPE_CODE_ENUM; |
976 | else | |
977 | { | |
6187dfac ILT |
978 | (*debug_swap->swap_tir_in) (bigend, |
979 | &ax[tsym.index].a_ti, | |
980 | &tir); | |
a2f1e2e5 ILT |
981 | if ((tir.bt == btNil || tir.bt == btVoid) |
982 | && tir.tq0 == tqNil) | |
983 | type_code = TYPE_CODE_ENUM; | |
984 | } | |
985 | nfields++; | |
986 | if (tsym.value > max_value) | |
987 | max_value = tsym.value; | |
988 | break; | |
989 | ||
990 | case stBlock: | |
991 | case stUnion: | |
992 | case stEnum: | |
993 | case stStruct: | |
994 | { | |
995 | #if 0 | |
996 | /* This is a no-op; is it trying to tell us something | |
997 | we should be checking? */ | |
998 | if (tsym.sc == scVariant); /*UNIMPLEMENTED*/ | |
999 | #endif | |
1000 | if (tsym.index != 0) | |
1001 | { | |
1002 | /* This is something like a struct within a | |
1003 | struct. Skip over the fields of the inner | |
1004 | struct. The -1 is because the for loop will | |
1005 | increment ext_tsym. */ | |
1006 | ext_tsym = ((char *) debug_info->external_sym | |
1007 | + ((cur_fdr->isymBase + tsym.index - 1) | |
1008 | * external_sym_size)); | |
1009 | } | |
1010 | } | |
1011 | break; | |
1012 | ||
1013 | case stTypedef: | |
1014 | /* mips cc puts out a typedef for struct x if it is not yet | |
1015 | defined when it encounters | |
1016 | struct y { struct x *xp; }; | |
1017 | Just ignore it. */ | |
1018 | break; | |
1019 | ||
33c66e44 PS |
1020 | case stIndirect: |
1021 | /* Irix5 cc puts out a stIndirect for struct x if it is not | |
1022 | yet defined when it encounters | |
1023 | struct y { struct x *xp; }; | |
1024 | Just ignore it. */ | |
1025 | break; | |
1026 | ||
a2f1e2e5 ILT |
1027 | default: |
1028 | complain (&block_member_complaint, tsym.st); | |
1029 | } | |
1030 | } | |
1031 | end_of_fields:; | |
1032 | ||
1033 | /* In an stBlock, there is no way to distinguish structs, | |
1034 | unions, and enums at this point. This is a bug in the | |
1035 | original design (that has been fixed with the recent | |
1036 | addition of the stStruct, stUnion, and stEnum symbol | |
1037 | types.) The way you can tell is if/when you see a variable | |
1038 | or field of that type. In that case the variable's type | |
1039 | (in the AUX table) says if the type is struct, union, or | |
1040 | enum, and points back to the stBlock here. So you can | |
1041 | patch the tag kind up later - but only if there actually is | |
1042 | a variable or field of that type. | |
1043 | ||
1044 | So until we know for sure, we will guess at this point. | |
1045 | The heuristic is: | |
1046 | If the first member has index==indexNil or a void type, | |
1047 | assume we have an enumeration. | |
1048 | Otherwise, if there is more than one member, and all | |
1049 | the members have offset 0, assume we have a union. | |
1050 | Otherwise, assume we have a struct. | |
1051 | ||
1052 | The heuristic could guess wrong in the case of of an | |
1053 | enumeration with no members or a union with one (or zero) | |
1054 | members, or when all except the last field of a struct have | |
1055 | width zero. These are uncommon and/or illegal situations, | |
1056 | and in any case guessing wrong probably doesn't matter | |
1057 | much. | |
1058 | ||
1059 | But if we later do find out we were wrong, we fixup the tag | |
1060 | kind. Members of an enumeration must be handled | |
1061 | differently from struct/union fields, and that is harder to | |
1062 | patch up, but luckily we shouldn't need to. (If there are | |
1063 | any enumeration members, we can tell for sure it's an enum | |
1064 | here.) */ | |
1065 | ||
1066 | if (type_code == TYPE_CODE_UNDEF) | |
1067 | if (nfields > 1 && max_value == 0) | |
1068 | type_code = TYPE_CODE_UNION; | |
1069 | else | |
1070 | type_code = TYPE_CODE_STRUCT; | |
1071 | ||
1072 | /* Create a new type or use the pending type. */ | |
1073 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1074 | if (pend == (struct mdebug_pending *) NULL) | |
1075 | { | |
1076 | t = new_type (NULL); | |
1077 | add_pending (cur_fdr, ext_sh, t); | |
1078 | } | |
1079 | else | |
1080 | t = pend->t; | |
1081 | ||
a8c49897 PS |
1082 | /* Do not set the tag name if it is a compiler generated tag name |
1083 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. | |
1084 | Alpha cc puts out an sh->iss of zero for those. */ | |
1085 | if (sh->iss == 0 || name[0] == '.' || name[0] == '\0') | |
a2f1e2e5 ILT |
1086 | TYPE_TAG_NAME (t) = NULL; |
1087 | else | |
1088 | TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack, | |
1089 | "", "", name); | |
1090 | ||
1091 | TYPE_CODE (t) = type_code; | |
1092 | TYPE_LENGTH (t) = sh->value; | |
1093 | TYPE_NFIELDS (t) = nfields; | |
1094 | TYPE_FIELDS (t) = f = ((struct field *) | |
1095 | TYPE_ALLOC (t, | |
1096 | nfields * sizeof (struct field))); | |
1097 | ||
1098 | if (type_code == TYPE_CODE_ENUM) | |
1099 | { | |
080868b4 PS |
1100 | int unsigned_enum = 1; |
1101 | ||
a2f1e2e5 | 1102 | /* This is a non-empty enum. */ |
9d51b3c5 | 1103 | |
a8c49897 | 1104 | /* DEC c89 has the number of enumerators in the sh.value field, |
9d51b3c5 PS |
1105 | not the type length, so we have to compensate for that |
1106 | incompatibility quirk. | |
1107 | This might do the wrong thing for an enum with one or two | |
1108 | enumerators and gcc -gcoff -fshort-enums, but these cases | |
080868b4 PS |
1109 | are hopefully rare enough. |
1110 | Alpha cc -migrate has a sh.value field of zero, we adjust | |
1111 | that too. */ | |
1112 | if (TYPE_LENGTH (t) == TYPE_NFIELDS (t) | |
1113 | || TYPE_LENGTH (t) == 0) | |
9d51b3c5 | 1114 | TYPE_LENGTH (t) = TARGET_INT_BIT / HOST_CHAR_BIT; |
a2f1e2e5 ILT |
1115 | for (ext_tsym = ext_sh + external_sym_size; |
1116 | ; | |
1117 | ext_tsym += external_sym_size) | |
1118 | { | |
1119 | SYMR tsym; | |
1120 | struct symbol *enum_sym; | |
1121 | ||
1122 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
1123 | ||
1124 | if (tsym.st != stMember) | |
1125 | break; | |
1126 | ||
1127 | f->bitpos = tsym.value; | |
1128 | f->type = t; | |
1129 | f->name = debug_info->ss + cur_fdr->issBase + tsym.iss; | |
1130 | f->bitsize = 0; | |
1131 | ||
1132 | enum_sym = ((struct symbol *) | |
1133 | obstack_alloc (¤t_objfile->symbol_obstack, | |
1134 | sizeof (struct symbol))); | |
1135 | memset ((PTR) enum_sym, 0, sizeof (struct symbol)); | |
ace4b8d7 FF |
1136 | SYMBOL_NAME (enum_sym) = |
1137 | obsavestring (f->name, strlen (f->name), | |
1138 | ¤t_objfile->symbol_obstack); | |
a2f1e2e5 ILT |
1139 | SYMBOL_CLASS (enum_sym) = LOC_CONST; |
1140 | SYMBOL_TYPE (enum_sym) = t; | |
1141 | SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE; | |
1142 | SYMBOL_VALUE (enum_sym) = tsym.value; | |
080868b4 PS |
1143 | if (SYMBOL_VALUE (enum_sym) < 0) |
1144 | unsigned_enum = 0; | |
a2f1e2e5 ILT |
1145 | add_symbol (enum_sym, top_stack->cur_block); |
1146 | ||
1147 | /* Skip the stMembers that we've handled. */ | |
1148 | count++; | |
1149 | f++; | |
1150 | } | |
080868b4 PS |
1151 | if (unsigned_enum) |
1152 | TYPE_FLAGS (t) |= TYPE_FLAG_UNSIGNED; | |
a2f1e2e5 ILT |
1153 | } |
1154 | /* make this the current type */ | |
1155 | top_stack->cur_type = t; | |
1156 | top_stack->cur_field = 0; | |
1157 | ||
1158 | /* Do not create a symbol for alpha cc unnamed structs. */ | |
1159 | if (sh->iss == 0) | |
1160 | break; | |
1161 | ||
1162 | /* gcc puts out an empty struct for an opaque struct definitions, | |
1163 | do not create a symbol for it either. */ | |
1164 | if (TYPE_NFIELDS (t) == 0) | |
1165 | { | |
1166 | TYPE_FLAGS (t) |= TYPE_FLAG_STUB; | |
1167 | break; | |
1168 | } | |
1169 | ||
1170 | s = new_symbol (name); | |
1171 | SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE; | |
1172 | SYMBOL_CLASS (s) = LOC_TYPEDEF; | |
1173 | SYMBOL_VALUE (s) = 0; | |
1174 | SYMBOL_TYPE (s) = t; | |
1175 | add_symbol (s, top_stack->cur_block); | |
1176 | break; | |
1177 | ||
1178 | /* End of local variables shared by struct, union, enum, and | |
1179 | block (as yet unknown struct/union/enum) processing. */ | |
1180 | } | |
1181 | ||
1182 | case_stBlock_code: | |
41270571 | 1183 | found_ecoff_debugging_info = 1; |
a2f1e2e5 ILT |
1184 | /* beginnning of (code) block. Value of symbol |
1185 | is the displacement from procedure start */ | |
1186 | push_parse_stack (); | |
1187 | ||
1188 | /* Do not start a new block if this is the outermost block of a | |
1189 | procedure. This allows the LOC_BLOCK symbol to point to the | |
1190 | block with the local variables, so funcname::var works. */ | |
1191 | if (top_stack->blocktype == stProc | |
1192 | || top_stack->blocktype == stStaticProc) | |
1193 | { | |
1194 | top_stack->blocktype = stNil; | |
1195 | break; | |
1196 | } | |
1197 | ||
1198 | top_stack->blocktype = stBlock; | |
1199 | b = new_block (top_stack->maxsyms); | |
1200 | BLOCK_START (b) = sh->value + top_stack->procadr; | |
1201 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1202 | top_stack->cur_block = b; | |
1203 | add_block (b, top_stack->cur_st); | |
1204 | break; | |
1205 | ||
1206 | case stEnd: /* end (of anything) */ | |
54d478cd | 1207 | if (sh->sc == scInfo || sh->sc == scCommon || sh->sc == scSCommon) |
a2f1e2e5 ILT |
1208 | { |
1209 | /* Finished with type */ | |
1210 | top_stack->cur_type = 0; | |
1211 | } | |
1212 | else if (sh->sc == scText && | |
1213 | (top_stack->blocktype == stProc || | |
1214 | top_stack->blocktype == stStaticProc)) | |
1215 | { | |
1216 | /* Finished with procedure */ | |
1217 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
1218 | struct mips_extra_func_info *e; | |
1219 | struct block *b; | |
5c26250b | 1220 | struct type *ftype = top_stack->cur_type; |
a2f1e2e5 ILT |
1221 | int i; |
1222 | ||
1223 | BLOCK_END (top_stack->cur_block) += sh->value; /* size */ | |
1224 | ||
1225 | /* Make up special symbol to contain procedure specific info */ | |
1226 | s = new_symbol (MIPS_EFI_SYMBOL_NAME); | |
1227 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; | |
1228 | SYMBOL_CLASS (s) = LOC_CONST; | |
bbcc95bd | 1229 | SYMBOL_TYPE (s) = mdebug_type_void; |
a2f1e2e5 ILT |
1230 | e = ((struct mips_extra_func_info *) |
1231 | obstack_alloc (¤t_objfile->symbol_obstack, | |
1232 | sizeof (struct mips_extra_func_info))); | |
3f403f6a | 1233 | memset ((PTR) e, 0, sizeof (struct mips_extra_func_info)); |
a2f1e2e5 ILT |
1234 | SYMBOL_VALUE (s) = (long) e; |
1235 | e->numargs = top_stack->numargs; | |
45d6f623 | 1236 | e->pdr.framereg = -1; |
a2f1e2e5 ILT |
1237 | add_symbol (s, top_stack->cur_block); |
1238 | ||
1239 | /* Reallocate symbols, saving memory */ | |
1240 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); | |
1241 | ||
1242 | /* f77 emits proc-level with address bounds==[0,0], | |
1243 | So look for such child blocks, and patch them. */ | |
1244 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
1245 | { | |
1246 | struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i); | |
1247 | if (BLOCK_SUPERBLOCK (b_bad) == b | |
1248 | && BLOCK_START (b_bad) == top_stack->procadr | |
1249 | && BLOCK_END (b_bad) == top_stack->procadr) | |
1250 | { | |
1251 | BLOCK_START (b_bad) = BLOCK_START (b); | |
1252 | BLOCK_END (b_bad) = BLOCK_END (b); | |
1253 | } | |
1254 | } | |
5c26250b PS |
1255 | |
1256 | if (TYPE_NFIELDS (ftype) <= 0) | |
1257 | { | |
1258 | /* No parameter type information is recorded with the function's | |
1259 | type. Set that from the type of the parameter symbols. */ | |
1260 | int nparams = top_stack->numargs; | |
1261 | int iparams; | |
1262 | struct symbol *sym; | |
1263 | ||
1264 | if (nparams > 0) | |
1265 | { | |
1266 | TYPE_NFIELDS (ftype) = nparams; | |
1267 | TYPE_FIELDS (ftype) = (struct field *) | |
1268 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
1269 | ||
1270 | for (i = iparams = 0; iparams < nparams; i++) | |
1271 | { | |
1272 | sym = BLOCK_SYM (b, i); | |
1273 | switch (SYMBOL_CLASS (sym)) | |
1274 | { | |
1275 | case LOC_ARG: | |
1276 | case LOC_REF_ARG: | |
1277 | case LOC_REGPARM: | |
1278 | case LOC_REGPARM_ADDR: | |
1279 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); | |
1280 | iparams++; | |
1281 | break; | |
1282 | default: | |
1283 | break; | |
1284 | } | |
1285 | } | |
1286 | } | |
1287 | } | |
a2f1e2e5 ILT |
1288 | } |
1289 | else if (sh->sc == scText && top_stack->blocktype == stBlock) | |
1290 | { | |
1291 | /* End of (code) block. The value of the symbol is the | |
1292 | displacement from the procedure`s start address of the | |
1293 | end of this block. */ | |
1294 | BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr; | |
1295 | shrink_block (top_stack->cur_block, top_stack->cur_st); | |
1296 | } | |
1297 | else if (sh->sc == scText && top_stack->blocktype == stNil) | |
1298 | { | |
1299 | /* End of outermost block. Pop parse stack and ignore. The | |
1300 | following stEnd of stProc will take care of the block. */ | |
1301 | ; | |
1302 | } | |
1303 | else if (sh->sc == scText && top_stack->blocktype == stFile) | |
1304 | { | |
1305 | /* End of file. Pop parse stack and ignore. Higher | |
1306 | level code deals with this. */ | |
1307 | ; | |
1308 | } | |
1309 | else | |
1310 | complain (&stEnd_complaint, sh->sc); | |
1311 | ||
1312 | pop_parse_stack (); /* restore previous lexical context */ | |
1313 | break; | |
1314 | ||
1315 | case stMember: /* member of struct or union */ | |
1316 | f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++]; | |
1317 | f->name = name; | |
1318 | f->bitpos = sh->value; | |
1319 | bitsize = 0; | |
1320 | f->type = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name); | |
1321 | f->bitsize = bitsize; | |
1322 | break; | |
1323 | ||
33c66e44 PS |
1324 | case stIndirect: /* forward declaration on Irix5 */ |
1325 | /* Forward declarations from Irix5 cc are handled by cross_ref, | |
1326 | skip them. */ | |
1327 | break; | |
1328 | ||
a2f1e2e5 | 1329 | case stTypedef: /* type definition */ |
41270571 PS |
1330 | found_ecoff_debugging_info = 1; |
1331 | ||
a2f1e2e5 ILT |
1332 | /* Typedefs for forward declarations and opaque structs from alpha cc |
1333 | are handled by cross_ref, skip them. */ | |
1334 | if (sh->iss == 0) | |
1335 | break; | |
1336 | ||
1337 | /* Parse the type or use the pending type. */ | |
1338 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1339 | if (pend == (struct mdebug_pending *) NULL) | |
1340 | { | |
1341 | t = parse_type (cur_fd, ax, sh->index, (int *)NULL, bigend, name); | |
1342 | add_pending (cur_fdr, ext_sh, t); | |
1343 | } | |
1344 | else | |
1345 | t = pend->t; | |
1346 | ||
1347 | /* mips cc puts out a typedef with the name of the struct for forward | |
1348 | declarations. These should not go into the symbol table and | |
1349 | TYPE_NAME should not be set for them. | |
1350 | They can't be distinguished from an intentional typedef to | |
1351 | the same name however: | |
1352 | x.h: | |
1353 | struct x { int ix; int jx; }; | |
1354 | struct xx; | |
1355 | x.c: | |
1356 | typedef struct x x; | |
1357 | struct xx {int ixx; int jxx; }; | |
1358 | generates a cross referencing stTypedef for x and xx. | |
1359 | The user visible effect of this is that the type of a pointer | |
1360 | to struct foo sometimes is given as `foo *' instead of `struct foo *'. | |
33c66e44 | 1361 | The problem is fixed with alpha cc and Irix5 cc. */ |
a2f1e2e5 | 1362 | |
db2302cb PS |
1363 | /* However if the typedef cross references to an opaque aggregate, it |
1364 | is safe to omit it from the symbol table. */ | |
1365 | ||
1366 | if (has_opaque_xref (cur_fdr, sh)) | |
1367 | break; | |
a2f1e2e5 ILT |
1368 | s = new_symbol (name); |
1369 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
1370 | SYMBOL_CLASS (s) = LOC_TYPEDEF; | |
1371 | SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block; | |
1372 | SYMBOL_TYPE (s) = t; | |
1373 | add_symbol (s, top_stack->cur_block); | |
1374 | ||
1375 | /* Incomplete definitions of structs should not get a name. */ | |
1376 | if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL | |
1377 | && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0 | |
1378 | || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT | |
1379 | && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION))) | |
1380 | { | |
1381 | if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR | |
1382 | || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC) | |
1383 | { | |
1384 | /* If we are giving a name to a type such as "pointer to | |
1385 | foo" or "function returning foo", we better not set | |
1386 | the TYPE_NAME. If the program contains "typedef char | |
1387 | *caddr_t;", we don't want all variables of type char | |
1388 | * to print as caddr_t. This is not just a | |
1389 | consequence of GDB's type management; CC and GCC (at | |
1390 | least through version 2.4) both output variables of | |
1391 | either type char * or caddr_t with the type | |
1392 | refering to the stTypedef symbol for caddr_t. If a future | |
1393 | compiler cleans this up it GDB is not ready for it | |
1394 | yet, but if it becomes ready we somehow need to | |
1395 | disable this check (without breaking the PCC/GCC2.4 | |
1396 | case). | |
1397 | ||
1398 | Sigh. | |
1399 | ||
1400 | Fortunately, this check seems not to be necessary | |
1401 | for anything except pointers or functions. */ | |
1402 | } | |
1403 | else | |
1404 | TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s); | |
1405 | } | |
1406 | break; | |
1407 | ||
1408 | case stFile: /* file name */ | |
1409 | push_parse_stack (); | |
1410 | top_stack->blocktype = sh->st; | |
1411 | break; | |
1412 | ||
1413 | /* I`ve never seen these for C */ | |
1414 | case stRegReloc: | |
1415 | break; /* register relocation */ | |
1416 | case stForward: | |
1417 | break; /* forwarding address */ | |
1418 | case stConstant: | |
1419 | break; /* constant */ | |
1420 | default: | |
1421 | complain (&unknown_mdebug_symtype_complaint, sh->st); | |
1422 | break; | |
1423 | } | |
1424 | ||
1425 | return count; | |
1426 | } | |
1427 | ||
1428 | /* Parse the type information provided in the raw AX entries for | |
1429 | the symbol SH. Return the bitfield size in BS, in case. | |
1430 | We must byte-swap the AX entries before we use them; BIGEND says whether | |
1431 | they are big-endian or little-endian (from fh->fBigendian). */ | |
1432 | ||
1433 | static struct type * | |
1434 | parse_type (fd, ax, aux_index, bs, bigend, sym_name) | |
1435 | int fd; | |
1436 | union aux_ext *ax; | |
1437 | unsigned int aux_index; | |
1438 | int *bs; | |
1439 | int bigend; | |
1440 | char *sym_name; | |
1441 | { | |
1442 | /* Null entries in this map are treated specially */ | |
1443 | static struct type **map_bt[] = | |
1444 | { | |
bbcc95bd PS |
1445 | &mdebug_type_void, /* btNil */ |
1446 | &mdebug_type_adr_32, /* btAdr */ | |
1447 | &mdebug_type_char, /* btChar */ | |
1448 | &mdebug_type_unsigned_char, /* btUChar */ | |
1449 | &mdebug_type_short, /* btShort */ | |
1450 | &mdebug_type_unsigned_short, /* btUShort */ | |
1451 | &mdebug_type_int_32, /* btInt */ | |
1452 | &mdebug_type_unsigned_int_32, /* btUInt */ | |
1453 | &mdebug_type_long_32, /* btLong */ | |
1454 | &mdebug_type_unsigned_long_32, /* btULong */ | |
1455 | &mdebug_type_float, /* btFloat */ | |
1456 | &mdebug_type_double, /* btDouble */ | |
1457 | 0, /* btStruct */ | |
1458 | 0, /* btUnion */ | |
1459 | 0, /* btEnum */ | |
1460 | 0, /* btTypedef */ | |
1461 | 0, /* btRange */ | |
1462 | 0, /* btSet */ | |
1463 | &mdebug_type_complex, /* btComplex */ | |
1464 | &mdebug_type_double_complex, /* btDComplex */ | |
1465 | 0, /* btIndirect */ | |
1466 | &mdebug_type_fixed_dec, /* btFixedDec */ | |
1467 | &mdebug_type_float_dec, /* btFloatDec */ | |
1468 | &mdebug_type_string, /* btString */ | |
1469 | 0, /* btBit */ | |
1470 | 0, /* btPicture */ | |
1471 | &mdebug_type_void, /* btVoid */ | |
1472 | 0, /* DEC C++: Pointer to member */ | |
1473 | 0, /* DEC C++: Virtual function table */ | |
1474 | 0, /* DEC C++: Class (Record) */ | |
1475 | &mdebug_type_long_64, /* btLong64 */ | |
1476 | &mdebug_type_unsigned_long_64, /* btULong64 */ | |
1477 | &mdebug_type_long_long_64, /* btLongLong64 */ | |
1478 | &mdebug_type_unsigned_long_long_64, /* btULongLong64 */ | |
1479 | &mdebug_type_adr_64, /* btAdr64 */ | |
1480 | &mdebug_type_int_64, /* btInt64 */ | |
1481 | &mdebug_type_unsigned_int_64, /* btUInt64 */ | |
a2f1e2e5 ILT |
1482 | }; |
1483 | ||
1484 | TIR t[1]; | |
1485 | struct type *tp = 0; | |
1486 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1487 | ||
10373914 PS |
1488 | /* Handle undefined types, they have indexNil. */ |
1489 | if (aux_index == indexNil) | |
bbcc95bd | 1490 | return mdebug_type_int; |
10373914 | 1491 | |
a2f1e2e5 ILT |
1492 | /* Handle corrupt aux indices. */ |
1493 | if (aux_index >= (debug_info->fdr + fd)->caux) | |
1494 | { | |
1495 | complain (&index_complaint, sym_name); | |
bbcc95bd | 1496 | return mdebug_type_int; |
a2f1e2e5 ILT |
1497 | } |
1498 | ax += aux_index; | |
1499 | ||
1500 | /* Use aux as a type information record, map its basic type. */ | |
6187dfac | 1501 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); |
a2f1e2e5 ILT |
1502 | if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt))) |
1503 | { | |
1504 | complain (&basic_type_complaint, t->bt, sym_name); | |
bbcc95bd | 1505 | return mdebug_type_int; |
a2f1e2e5 ILT |
1506 | } |
1507 | if (map_bt[t->bt]) | |
1508 | { | |
1509 | tp = *map_bt[t->bt]; | |
1510 | } | |
1511 | else | |
1512 | { | |
1513 | tp = NULL; | |
1514 | /* Cannot use builtin types -- build our own */ | |
1515 | switch (t->bt) | |
1516 | { | |
a2f1e2e5 ILT |
1517 | case btStruct: |
1518 | type_code = TYPE_CODE_STRUCT; | |
1519 | break; | |
1520 | case btUnion: | |
1521 | type_code = TYPE_CODE_UNION; | |
1522 | break; | |
1523 | case btEnum: | |
1524 | type_code = TYPE_CODE_ENUM; | |
1525 | break; | |
1526 | case btRange: | |
1527 | type_code = TYPE_CODE_RANGE; | |
1528 | break; | |
1529 | case btSet: | |
1530 | type_code = TYPE_CODE_SET; | |
1531 | break; | |
080868b4 PS |
1532 | case btIndirect: |
1533 | /* alpha cc -migrate uses this for typedefs. The true type will | |
1534 | be obtained by crossreferencing below. */ | |
1535 | type_code = TYPE_CODE_ERROR; | |
1536 | break; | |
a2f1e2e5 ILT |
1537 | case btTypedef: |
1538 | /* alpha cc uses this for typedefs. The true type will be | |
1539 | obtained by crossreferencing below. */ | |
1540 | type_code = TYPE_CODE_ERROR; | |
1541 | break; | |
1542 | default: | |
1543 | complain (&basic_type_complaint, t->bt, sym_name); | |
bbcc95bd | 1544 | return mdebug_type_int; |
a2f1e2e5 ILT |
1545 | } |
1546 | } | |
1547 | ||
1548 | /* Move on to next aux */ | |
1549 | ax++; | |
1550 | ||
1551 | if (t->fBitfield) | |
1552 | { | |
080868b4 PS |
1553 | int width = AUX_GET_WIDTH (bigend, ax); |
1554 | ||
a2f1e2e5 ILT |
1555 | /* Inhibit core dumps with some cfront generated objects that |
1556 | corrupt the TIR. */ | |
1557 | if (bs == (int *)NULL) | |
1558 | { | |
080868b4 PS |
1559 | /* Alpha cc -migrate encodes char and unsigned char types |
1560 | as short and unsigned short types with a field width of 8. | |
1561 | Enum types also have a field width which we ignore for now. */ | |
1562 | if (t->bt == btShort && width == 8) | |
1563 | tp = mdebug_type_char; | |
1564 | else if (t->bt == btUShort && width == 8) | |
1565 | tp = mdebug_type_unsigned_char; | |
1566 | else if (t->bt == btEnum) | |
1567 | ; | |
1568 | else | |
1569 | complain (&bad_fbitfield_complaint, sym_name); | |
a2f1e2e5 | 1570 | } |
080868b4 PS |
1571 | else |
1572 | *bs = width; | |
a2f1e2e5 ILT |
1573 | ax++; |
1574 | } | |
1575 | ||
080868b4 PS |
1576 | /* A btIndirect entry cross references to an aux entry containing |
1577 | the type. */ | |
1578 | if (t->bt == btIndirect) | |
1579 | { | |
1580 | RNDXR rn[1]; | |
1581 | int rf; | |
1582 | FDR *xref_fh; | |
1583 | int xref_fd; | |
1584 | ||
1585 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
1586 | ax++; | |
1587 | if (rn->rfd == 0xfff) | |
1588 | { | |
1589 | rf = AUX_GET_ISYM (bigend, ax); | |
1590 | ax++; | |
1591 | } | |
1592 | else | |
1593 | rf = rn->rfd; | |
1594 | ||
1595 | if (rf == -1) | |
1596 | { | |
1597 | complain (&bad_indirect_xref_complaint, sym_name); | |
1598 | return mdebug_type_int; | |
1599 | } | |
1600 | xref_fh = get_rfd (fd, rf); | |
1601 | xref_fd = xref_fh - debug_info->fdr; | |
1602 | tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase, | |
1603 | rn->index, (int *) NULL, xref_fh->fBigendian, sym_name); | |
1604 | } | |
1605 | ||
a2f1e2e5 ILT |
1606 | /* All these types really point to some (common) MIPS type |
1607 | definition, and only the type-qualifiers fully identify | |
1608 | them. We'll make the same effort at sharing. */ | |
1609 | if (t->bt == btStruct || | |
1610 | t->bt == btUnion || | |
1611 | t->bt == btEnum || | |
1612 | ||
1613 | /* btSet (I think) implies that the name is a tag name, not a typedef | |
1614 | name. This apparently is a MIPS extension for C sets. */ | |
1615 | t->bt == btSet) | |
1616 | { | |
1617 | char *name; | |
1618 | ||
1619 | /* Try to cross reference this type, build new type on failure. */ | |
1620 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1621 | if (tp == (struct type *) NULL) | |
1622 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
1623 | ||
a8c49897 PS |
1624 | /* DEC c89 produces cross references to qualified aggregate types, |
1625 | dereference them. */ | |
1626 | while (TYPE_CODE (tp) == TYPE_CODE_PTR | |
1627 | || TYPE_CODE (tp) == TYPE_CODE_ARRAY) | |
1628 | tp = tp->target_type; | |
1629 | ||
a2f1e2e5 ILT |
1630 | /* Make sure that TYPE_CODE(tp) has an expected type code. |
1631 | Any type may be returned from cross_ref if file indirect entries | |
1632 | are corrupted. */ | |
1633 | if (TYPE_CODE (tp) != TYPE_CODE_STRUCT | |
1634 | && TYPE_CODE (tp) != TYPE_CODE_UNION | |
1635 | && TYPE_CODE (tp) != TYPE_CODE_ENUM) | |
1636 | { | |
1637 | complain (&unexpected_type_code_complaint, sym_name); | |
1638 | } | |
1639 | else | |
1640 | { | |
1641 | ||
1642 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
1643 | exception is if we guessed wrong re struct/union/enum. | |
1644 | But for struct vs. union a wrong guess is harmless, so | |
1645 | don't complain(). */ | |
1646 | if ((TYPE_CODE (tp) == TYPE_CODE_ENUM | |
1647 | && type_code != TYPE_CODE_ENUM) | |
1648 | || (TYPE_CODE (tp) != TYPE_CODE_ENUM | |
1649 | && type_code == TYPE_CODE_ENUM)) | |
1650 | { | |
1651 | complain (&bad_tag_guess_complaint, sym_name); | |
1652 | } | |
1653 | ||
1654 | if (TYPE_CODE (tp) != type_code) | |
1655 | { | |
1656 | TYPE_CODE (tp) = type_code; | |
1657 | } | |
1658 | ||
1659 | /* Do not set the tag name if it is a compiler generated tag name | |
1660 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ | |
1661 | if (name[0] == '.' || name[0] == '\0') | |
1662 | TYPE_TAG_NAME (tp) = NULL; | |
1663 | else if (TYPE_TAG_NAME (tp) == NULL | |
1664 | || !STREQ (TYPE_TAG_NAME (tp), name)) | |
1665 | TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name), | |
1666 | ¤t_objfile->type_obstack); | |
1667 | } | |
1668 | } | |
1669 | ||
1670 | /* All these types really point to some (common) MIPS type | |
1671 | definition, and only the type-qualifiers fully identify | |
1672 | them. We'll make the same effort at sharing. | |
080868b4 PS |
1673 | FIXME: We are not doing any guessing on range types. */ |
1674 | if (t->bt == btRange) | |
a2f1e2e5 ILT |
1675 | { |
1676 | char *name; | |
1677 | ||
1678 | /* Try to cross reference this type, build new type on failure. */ | |
1679 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1680 | if (tp == (struct type *) NULL) | |
1681 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
1682 | ||
1683 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
1684 | Any type may be returned from cross_ref if file indirect entries | |
1685 | are corrupted. */ | |
1686 | if (TYPE_CODE (tp) != TYPE_CODE_RANGE) | |
1687 | { | |
1688 | complain (&unexpected_type_code_complaint, sym_name); | |
1689 | } | |
1690 | else | |
1691 | { | |
1692 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
1693 | exception is if we guessed wrong re struct/union/enum. */ | |
1694 | if (TYPE_CODE (tp) != type_code) | |
1695 | { | |
1696 | complain (&bad_tag_guess_complaint, sym_name); | |
1697 | TYPE_CODE (tp) = type_code; | |
1698 | } | |
1699 | if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name)) | |
1700 | TYPE_NAME (tp) = obsavestring (name, strlen (name), | |
1701 | ¤t_objfile->type_obstack); | |
1702 | } | |
1703 | } | |
1704 | if (t->bt == btTypedef) | |
1705 | { | |
1706 | char *name; | |
1707 | ||
1708 | /* Try to cross reference this type, it should succeed. */ | |
1709 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1710 | if (tp == (struct type *) NULL) | |
1711 | { | |
1712 | complain (&unable_to_cross_ref_complaint, sym_name); | |
bbcc95bd | 1713 | tp = mdebug_type_int; |
a2f1e2e5 ILT |
1714 | } |
1715 | } | |
1716 | ||
1717 | /* Deal with range types */ | |
1718 | if (t->bt == btRange) | |
1719 | { | |
1720 | TYPE_NFIELDS (tp) = 2; | |
1721 | TYPE_FIELDS (tp) = ((struct field *) | |
1722 | TYPE_ALLOC (tp, 2 * sizeof (struct field))); | |
1723 | TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"), | |
1724 | ¤t_objfile->type_obstack); | |
1725 | TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax); | |
1726 | ax++; | |
1727 | TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"), | |
1728 | ¤t_objfile->type_obstack); | |
1729 | TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax); | |
1730 | ax++; | |
1731 | } | |
1732 | ||
1733 | /* Parse all the type qualifiers now. If there are more | |
1734 | than 6 the game will continue in the next aux */ | |
1735 | ||
1736 | while (1) | |
1737 | { | |
1738 | #define PARSE_TQ(tq) \ | |
1739 | if (t->tq != tqNil) \ | |
1740 | ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \ | |
1741 | else \ | |
1742 | break; | |
1743 | ||
1744 | PARSE_TQ (tq0); | |
1745 | PARSE_TQ (tq1); | |
1746 | PARSE_TQ (tq2); | |
1747 | PARSE_TQ (tq3); | |
1748 | PARSE_TQ (tq4); | |
1749 | PARSE_TQ (tq5); | |
1750 | #undef PARSE_TQ | |
1751 | ||
1752 | /* mips cc 2.x and gcc never put out continued aux entries. */ | |
1753 | if (!t->continued) | |
1754 | break; | |
1755 | ||
6187dfac | 1756 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); |
a2f1e2e5 ILT |
1757 | ax++; |
1758 | } | |
1759 | ||
1760 | /* Complain for illegal continuations due to corrupt aux entries. */ | |
1761 | if (t->continued) | |
1762 | complain (&bad_continued_complaint, sym_name); | |
1763 | ||
1764 | return tp; | |
1765 | } | |
1766 | ||
1767 | /* Make up a complex type from a basic one. Type is passed by | |
1768 | reference in TPP and side-effected as necessary. The type | |
1769 | qualifier TQ says how to handle the aux symbols at AX for | |
1770 | the symbol SX we are currently analyzing. BIGEND says whether | |
1771 | aux symbols are big-endian or little-endian. | |
1772 | Returns the number of aux symbols we parsed. */ | |
1773 | ||
1774 | static int | |
1775 | upgrade_type (fd, tpp, tq, ax, bigend, sym_name) | |
1776 | int fd; | |
1777 | struct type **tpp; | |
1778 | int tq; | |
1779 | union aux_ext *ax; | |
1780 | int bigend; | |
1781 | char *sym_name; | |
1782 | { | |
1783 | int off; | |
1784 | struct type *t; | |
1785 | ||
1786 | /* Used in array processing */ | |
1787 | int rf, id; | |
1788 | FDR *fh; | |
1789 | struct type *range; | |
1790 | struct type *indx; | |
1791 | int lower, upper; | |
1792 | RNDXR rndx; | |
1793 | ||
1794 | switch (tq) | |
1795 | { | |
1796 | case tqPtr: | |
1797 | t = lookup_pointer_type (*tpp); | |
1798 | *tpp = t; | |
1799 | return 0; | |
1800 | ||
1801 | case tqProc: | |
1802 | t = lookup_function_type (*tpp); | |
1803 | *tpp = t; | |
1804 | return 0; | |
1805 | ||
1806 | case tqArray: | |
1807 | off = 0; | |
1808 | ||
1809 | /* Determine and record the domain type (type of index) */ | |
6187dfac | 1810 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx); |
a2f1e2e5 ILT |
1811 | id = rndx.index; |
1812 | rf = rndx.rfd; | |
1813 | if (rf == 0xfff) | |
1814 | { | |
1815 | ax++; | |
1816 | rf = AUX_GET_ISYM (bigend, ax); | |
1817 | off++; | |
1818 | } | |
1819 | fh = get_rfd (fd, rf); | |
1820 | ||
9b041f69 PS |
1821 | indx = parse_type (fh - debug_info->fdr, |
1822 | debug_info->external_aux + fh->iauxBase, | |
a2f1e2e5 ILT |
1823 | id, (int *) NULL, bigend, sym_name); |
1824 | ||
1825 | /* The bounds type should be an integer type, but might be anything | |
1826 | else due to corrupt aux entries. */ | |
1827 | if (TYPE_CODE (indx) != TYPE_CODE_INT) | |
1828 | { | |
1829 | complain (&array_index_type_complaint, sym_name); | |
bbcc95bd | 1830 | indx = mdebug_type_int; |
a2f1e2e5 ILT |
1831 | } |
1832 | ||
1833 | /* Get the bounds, and create the array type. */ | |
1834 | ax++; | |
1835 | lower = AUX_GET_DNLOW (bigend, ax); | |
1836 | ax++; | |
1837 | upper = AUX_GET_DNHIGH (bigend, ax); | |
1838 | ax++; | |
1839 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ | |
1840 | ||
1841 | range = create_range_type ((struct type *) NULL, indx, | |
1842 | lower, upper); | |
1843 | ||
1844 | t = create_array_type ((struct type *) NULL, *tpp, range); | |
1845 | ||
1846 | /* We used to fill in the supplied array element bitsize | |
1847 | here if the TYPE_LENGTH of the target type was zero. | |
1848 | This happens for a `pointer to an array of anonymous structs', | |
1849 | but in this case the array element bitsize is also zero, | |
1850 | so nothing is gained. | |
1851 | And we used to check the TYPE_LENGTH of the target type against | |
1852 | the supplied array element bitsize. | |
1853 | gcc causes a mismatch for `pointer to array of object', | |
1854 | since the sdb directives it uses do not have a way of | |
1855 | specifying the bitsize, but it does no harm (the | |
1856 | TYPE_LENGTH should be correct) and we should be able to | |
1857 | ignore the erroneous bitsize from the auxiliary entry safely. | |
1858 | dbx seems to ignore it too. */ | |
1859 | ||
080868b4 PS |
1860 | /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH |
1861 | problem. */ | |
1862 | if (TYPE_LENGTH (*tpp) == 0) | |
1863 | { | |
1864 | TYPE_FLAGS (t) |= TYPE_FLAG_TARGET_STUB; | |
1865 | } | |
1866 | ||
a2f1e2e5 ILT |
1867 | *tpp = t; |
1868 | return 4 + off; | |
1869 | ||
1870 | case tqVol: | |
1871 | /* Volatile -- currently ignored */ | |
1872 | return 0; | |
1873 | ||
1874 | case tqConst: | |
1875 | /* Const -- currently ignored */ | |
1876 | return 0; | |
1877 | ||
1878 | default: | |
1879 | complain (&unknown_type_qual_complaint, tq); | |
1880 | return 0; | |
1881 | } | |
1882 | } | |
1883 | ||
1884 | ||
1885 | /* Parse a procedure descriptor record PR. Note that the procedure is | |
1886 | parsed _after_ the local symbols, now we just insert the extra | |
1887 | information we need into a MIPS_EFI_SYMBOL_NAME symbol that has | |
1888 | already been placed in the procedure's main block. Note also that | |
1889 | images that have been partially stripped (ld -x) have been deprived | |
1890 | of local symbols, and we have to cope with them here. FIRST_OFF is | |
1891 | the offset of the first procedure for this FDR; we adjust the | |
1892 | address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab | |
1893 | to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol | |
1894 | in question, or NULL to use top_stack->cur_block. */ | |
1895 | ||
9b041f69 | 1896 | static void parse_procedure PARAMS ((PDR *, struct symtab *, CORE_ADDR, |
33c66e44 | 1897 | struct partial_symtab *)); |
a2f1e2e5 ILT |
1898 | |
1899 | static void | |
9b041f69 | 1900 | parse_procedure (pr, search_symtab, lowest_pdr_addr, pst) |
a2f1e2e5 ILT |
1901 | PDR *pr; |
1902 | struct symtab *search_symtab; | |
9b041f69 | 1903 | CORE_ADDR lowest_pdr_addr; |
33c66e44 | 1904 | struct partial_symtab *pst; |
a2f1e2e5 ILT |
1905 | { |
1906 | struct symbol *s, *i; | |
1907 | struct block *b; | |
1908 | struct mips_extra_func_info *e; | |
1909 | char *sh_name; | |
1910 | ||
1911 | /* Simple rule to find files linked "-x" */ | |
1912 | if (cur_fdr->rss == -1) | |
1913 | { | |
1914 | if (pr->isym == -1) | |
1915 | { | |
1916 | /* Static procedure at address pr->adr. Sigh. */ | |
833e0d94 | 1917 | /* FIXME-32x64. assuming pr->adr fits in long. */ |
a2f1e2e5 ILT |
1918 | complain (&pdr_static_symbol_complaint, (unsigned long) pr->adr); |
1919 | return; | |
1920 | } | |
1921 | else | |
1922 | { | |
1923 | /* external */ | |
1924 | EXTR she; | |
1925 | ||
1926 | (*debug_swap->swap_ext_in) (cur_bfd, | |
1927 | ((char *) debug_info->external_ext | |
1928 | + (pr->isym | |
1929 | * debug_swap->external_ext_size)), | |
1930 | &she); | |
1931 | sh_name = debug_info->ssext + she.asym.iss; | |
1932 | } | |
1933 | } | |
1934 | else | |
1935 | { | |
1936 | /* Full symbols */ | |
1937 | SYMR sh; | |
1938 | ||
1939 | (*debug_swap->swap_sym_in) (cur_bfd, | |
1940 | ((char *) debug_info->external_sym | |
1941 | + ((cur_fdr->isymBase + pr->isym) | |
1942 | * debug_swap->external_sym_size)), | |
1943 | &sh); | |
1944 | sh_name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
1945 | } | |
1946 | ||
1947 | if (search_symtab != NULL) | |
1948 | { | |
1949 | #if 0 | |
1950 | /* This loses both in the case mentioned (want a static, find a global), | |
1951 | but also if we are looking up a non-mangled name which happens to | |
1952 | match the name of a mangled function. */ | |
1953 | /* We have to save the cur_fdr across the call to lookup_symbol. | |
1954 | If the pdr is for a static function and if a global function with | |
1955 | the same name exists, lookup_symbol will eventually read in the symtab | |
1956 | for the global function and clobber cur_fdr. */ | |
1957 | FDR *save_cur_fdr = cur_fdr; | |
1958 | s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL); | |
1959 | cur_fdr = save_cur_fdr; | |
1960 | #else | |
1961 | s = mylookup_symbol | |
1962 | (sh_name, | |
1963 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK), | |
1964 | VAR_NAMESPACE, | |
1965 | LOC_BLOCK); | |
1966 | #endif | |
1967 | } | |
1968 | else | |
1969 | s = mylookup_symbol (sh_name, top_stack->cur_block, | |
1970 | VAR_NAMESPACE, LOC_BLOCK); | |
1971 | ||
1972 | if (s != 0) | |
1973 | { | |
1974 | b = SYMBOL_BLOCK_VALUE (s); | |
1975 | } | |
1976 | else | |
1977 | { | |
1978 | complain (&pdr_for_nonsymbol_complaint, sh_name); | |
1979 | #if 1 | |
1980 | return; | |
1981 | #else | |
1982 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ | |
1983 | s = new_symbol (sh_name); | |
1984 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
1985 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
1986 | /* Donno its type, hope int is ok */ | |
bbcc95bd | 1987 | SYMBOL_TYPE (s) = lookup_function_type (mdebug_type_int); |
a2f1e2e5 ILT |
1988 | add_symbol (s, top_stack->cur_block); |
1989 | /* Wont have symbols for this one */ | |
1990 | b = new_block (2); | |
1991 | SYMBOL_BLOCK_VALUE (s) = b; | |
1992 | BLOCK_FUNCTION (b) = s; | |
1993 | BLOCK_START (b) = pr->adr; | |
1994 | /* BOUND used to be the end of procedure's text, but the | |
1995 | argument is no longer passed in. */ | |
1996 | BLOCK_END (b) = bound; | |
1997 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1998 | add_block (b, top_stack->cur_st); | |
1999 | #endif | |
2000 | } | |
2001 | ||
2002 | i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST); | |
2003 | ||
2004 | if (i) | |
2005 | { | |
2006 | e = (struct mips_extra_func_info *) SYMBOL_VALUE (i); | |
2007 | e->pdr = *pr; | |
2008 | e->pdr.isym = (long) s; | |
9b041f69 | 2009 | e->pdr.adr += pst->textlow - lowest_pdr_addr; |
a2f1e2e5 ILT |
2010 | |
2011 | /* Correct incorrect setjmp procedure descriptor from the library | |
2012 | to make backtrace through setjmp work. */ | |
2013 | if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp")) | |
2014 | { | |
2015 | complain (&bad_setjmp_pdr_complaint, 0); | |
2016 | e->pdr.pcreg = RA_REGNUM; | |
2017 | e->pdr.regmask = 0x80000000; | |
2018 | e->pdr.regoffset = -4; | |
2019 | } | |
a2f1e2e5 | 2020 | } |
41270571 PS |
2021 | |
2022 | /* It would be reasonable that functions that have been compiled | |
2023 | without debugging info have a btNil type for their return value, | |
2024 | and functions that are void and are compiled with debugging info | |
2025 | have btVoid. | |
2026 | gcc and DEC f77 put out btNil types for both cases, so btNil is mapped | |
2027 | to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info' | |
2028 | case right. | |
2029 | The glevel field in cur_fdr could be used to determine the presence | |
2030 | of debugging info, but GCC doesn't always pass the -g switch settings | |
2031 | to the assembler and GAS doesn't set the glevel field from the -g switch | |
2032 | settings. | |
2033 | To work around these problems, the return value type of a TYPE_CODE_VOID | |
2034 | function is adjusted accordingly if no debugging info was found in the | |
2035 | compilation unit. */ | |
2036 | ||
2037 | if (processing_gcc_compilation == 0 | |
2038 | && found_ecoff_debugging_info == 0 | |
2039 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID) | |
2040 | SYMBOL_TYPE (s) = nodebug_func_symbol_type; | |
a2f1e2e5 ILT |
2041 | } |
2042 | ||
72bba93b SG |
2043 | /* Relocate the extra function info pointed to by the symbol table. */ |
2044 | ||
2045 | void | |
2046 | ecoff_relocate_efi (sym, delta) | |
2047 | struct symbol *sym; | |
2048 | CORE_ADDR delta; | |
2049 | { | |
2050 | struct mips_extra_func_info *e; | |
2051 | ||
2052 | e = (struct mips_extra_func_info *) SYMBOL_VALUE (sym); | |
2053 | ||
2054 | e->pdr.adr += delta; | |
2055 | } | |
2056 | ||
a2f1e2e5 | 2057 | /* Parse the external symbol ES. Just call parse_symbol() after |
db2302cb | 2058 | making sure we know where the aux are for it. |
a2f1e2e5 ILT |
2059 | BIGEND says whether aux entries are big-endian or little-endian. |
2060 | ||
2061 | This routine clobbers top_stack->cur_block and ->cur_st. */ | |
2062 | ||
db2302cb PS |
2063 | static void parse_external PARAMS ((EXTR *, int, struct section_offsets *)); |
2064 | ||
a2f1e2e5 | 2065 | static void |
db2302cb | 2066 | parse_external (es, bigend, section_offsets) |
a2f1e2e5 | 2067 | EXTR *es; |
a2f1e2e5 | 2068 | int bigend; |
72bba93b | 2069 | struct section_offsets *section_offsets; |
a2f1e2e5 ILT |
2070 | { |
2071 | union aux_ext *ax; | |
2072 | ||
2073 | if (es->ifd != ifdNil) | |
2074 | { | |
2075 | cur_fd = es->ifd; | |
2076 | cur_fdr = debug_info->fdr + cur_fd; | |
2077 | ax = debug_info->external_aux + cur_fdr->iauxBase; | |
2078 | } | |
2079 | else | |
2080 | { | |
2081 | cur_fdr = debug_info->fdr; | |
2082 | ax = 0; | |
2083 | } | |
2084 | ||
2085 | /* Reading .o files */ | |
73b8e6a9 PS |
2086 | if (es->asym.sc == scUndefined || es->asym.sc == scSUndefined |
2087 | || es->asym.sc == scNil) | |
a2f1e2e5 ILT |
2088 | { |
2089 | char *what; | |
2090 | switch (es->asym.st) | |
2091 | { | |
2092 | case stNil: | |
2093 | /* These are generated for static symbols in .o files, | |
2094 | ignore them. */ | |
2095 | return; | |
2096 | case stStaticProc: | |
2097 | case stProc: | |
2098 | what = "procedure"; | |
2099 | n_undef_procs++; | |
2100 | break; | |
2101 | case stGlobal: | |
2102 | what = "variable"; | |
2103 | n_undef_vars++; | |
2104 | break; | |
2105 | case stLabel: | |
2106 | what = "label"; | |
2107 | n_undef_labels++; | |
2108 | break; | |
2109 | default: | |
2110 | what = "symbol"; | |
2111 | break; | |
2112 | } | |
2113 | n_undef_symbols++; | |
2114 | /* FIXME: Turn this into a complaint? */ | |
2115 | if (info_verbose) | |
2116 | printf_filtered ("Warning: %s `%s' is undefined (in %s)\n", | |
2117 | what, debug_info->ssext + es->asym.iss, | |
2118 | fdr_name (cur_fdr)); | |
2119 | return; | |
2120 | } | |
2121 | ||
2122 | switch (es->asym.st) | |
2123 | { | |
2124 | case stProc: | |
db2302cb PS |
2125 | case stStaticProc: |
2126 | /* There is no need to parse the external procedure symbols. | |
2127 | If they are from objects compiled without -g, their index will | |
2128 | be indexNil, and the symbol definition from the minimal symbol | |
2129 | is preferrable (yielding a function returning int instead of int). | |
2130 | If the index points to a local procedure symbol, the local | |
2131 | symbol already provides the correct type. | |
2132 | Note that the index of the external procedure symbol points | |
2133 | to the local procedure symbol in the local symbol table, and | |
2134 | _not_ to the auxiliary symbol info. */ | |
2135 | break; | |
a2f1e2e5 ILT |
2136 | case stGlobal: |
2137 | case stLabel: | |
54d478cd PS |
2138 | /* Global common symbols are resolved by the runtime loader, |
2139 | ignore them. */ | |
2140 | if (es->asym.sc == scCommon || es->asym.sc == scSCommon) | |
2141 | break; | |
2142 | ||
a2f1e2e5 ILT |
2143 | /* Note that the case of a symbol with indexNil must be handled |
2144 | anyways by parse_symbol(). */ | |
72bba93b | 2145 | parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets); |
a2f1e2e5 ILT |
2146 | break; |
2147 | default: | |
2148 | break; | |
2149 | } | |
2150 | } | |
2151 | ||
2152 | /* Parse the line number info for file descriptor FH into | |
2153 | GDB's linetable LT. MIPS' encoding requires a little bit | |
2154 | of magic to get things out. Note also that MIPS' line | |
2155 | numbers can go back and forth, apparently we can live | |
2156 | with that and do not need to reorder our linetables */ | |
2157 | ||
33c66e44 | 2158 | static void parse_lines PARAMS ((FDR *, PDR *, struct linetable *, int, |
9b041f69 | 2159 | struct partial_symtab *, CORE_ADDR)); |
33c66e44 | 2160 | |
a2f1e2e5 | 2161 | static void |
9b041f69 | 2162 | parse_lines (fh, pr, lt, maxlines, pst, lowest_pdr_addr) |
a2f1e2e5 ILT |
2163 | FDR *fh; |
2164 | PDR *pr; | |
2165 | struct linetable *lt; | |
2166 | int maxlines; | |
33c66e44 | 2167 | struct partial_symtab *pst; |
9b041f69 | 2168 | CORE_ADDR lowest_pdr_addr; |
a2f1e2e5 ILT |
2169 | { |
2170 | unsigned char *base; | |
2171 | int j, k; | |
2172 | int delta, count, lineno = 0; | |
a2f1e2e5 ILT |
2173 | |
2174 | if (fh->cbLine == 0) | |
2175 | return; | |
2176 | ||
a2f1e2e5 ILT |
2177 | /* Scan by procedure descriptors */ |
2178 | k = 0; | |
2179 | for (j = 0; j < fh->cpd; j++, pr++) | |
2180 | { | |
9b041f69 PS |
2181 | CORE_ADDR l; |
2182 | CORE_ADDR adr; | |
a2f1e2e5 ILT |
2183 | unsigned char *halt; |
2184 | ||
2185 | /* No code for this one */ | |
2186 | if (pr->iline == ilineNil || | |
2187 | pr->lnLow == -1 || pr->lnHigh == -1) | |
2188 | continue; | |
2189 | ||
2190 | /* Determine start and end address of compressed line bytes for | |
2191 | this procedure. */ | |
2192 | base = debug_info->line + fh->cbLineOffset; | |
2193 | if (j != (fh->cpd - 1)) | |
2194 | halt = base + pr[1].cbLineOffset; | |
2195 | else | |
2196 | halt = base + fh->cbLine; | |
2197 | base += pr->cbLineOffset; | |
2198 | ||
9b041f69 | 2199 | adr = pst->textlow + pr->adr - lowest_pdr_addr; |
72bba93b | 2200 | |
a2f1e2e5 ILT |
2201 | l = adr >> 2; /* in words */ |
2202 | for (lineno = pr->lnLow; base < halt; ) | |
2203 | { | |
2204 | count = *base & 0x0f; | |
2205 | delta = *base++ >> 4; | |
2206 | if (delta >= 8) | |
2207 | delta -= 16; | |
2208 | if (delta == -8) | |
2209 | { | |
2210 | delta = (base[0] << 8) | base[1]; | |
2211 | if (delta >= 0x8000) | |
2212 | delta -= 0x10000; | |
2213 | base += 2; | |
2214 | } | |
2215 | lineno += delta; /* first delta is 0 */ | |
2216 | ||
2217 | /* Complain if the line table overflows. Could happen | |
2218 | with corrupt binaries. */ | |
2219 | if (lt->nitems >= maxlines) | |
2220 | { | |
2221 | complain (&bad_linetable_guess_complaint, fdr_name (fh)); | |
2222 | break; | |
2223 | } | |
2224 | k = add_line (lt, lineno, l, k); | |
2225 | l += count + 1; | |
2226 | } | |
2227 | } | |
2228 | } | |
2229 | \f | |
2230 | /* Master parsing procedure for first-pass reading of file symbols | |
2231 | into a partial_symtab. */ | |
2232 | ||
2233 | static void | |
2234 | parse_partial_symbols (objfile, section_offsets) | |
2235 | struct objfile *objfile; | |
2236 | struct section_offsets *section_offsets; | |
2237 | { | |
2238 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
2239 | const bfd_size_type external_rfd_size = debug_swap->external_rfd_size; | |
2240 | const bfd_size_type external_ext_size = debug_swap->external_ext_size; | |
2241 | void (* const swap_ext_in) PARAMS ((bfd *, PTR, EXTR *)) | |
2242 | = debug_swap->swap_ext_in; | |
2243 | void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) | |
2244 | = debug_swap->swap_sym_in; | |
2245 | void (* const swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *)) | |
2246 | = debug_swap->swap_rfd_in; | |
2247 | int f_idx, s_idx; | |
2248 | HDRR *hdr = &debug_info->symbolic_header; | |
2249 | /* Running pointers */ | |
2250 | FDR *fh; | |
2251 | char *ext_out; | |
2252 | char *ext_out_end; | |
2253 | EXTR *ext_block; | |
2254 | register EXTR *ext_in; | |
2255 | EXTR *ext_in_end; | |
2256 | SYMR sh; | |
2257 | struct partial_symtab *pst; | |
3a179be1 | 2258 | int textlow_not_set = 1; |
a2f1e2e5 ILT |
2259 | int past_first_source_file = 0; |
2260 | ||
2261 | /* List of current psymtab's include files */ | |
2262 | char **psymtab_include_list; | |
2263 | int includes_allocated; | |
2264 | int includes_used; | |
2265 | EXTR *extern_tab; | |
2266 | struct pst_map *fdr_to_pst; | |
2267 | /* Index within current psymtab dependency list */ | |
2268 | struct partial_symtab **dependency_list; | |
2269 | int dependencies_used, dependencies_allocated; | |
2270 | struct cleanup *old_chain; | |
2271 | char *name; | |
2272 | enum language prev_language; | |
33c66e44 PS |
2273 | asection *text_sect; |
2274 | int relocatable = 0; | |
2275 | ||
2276 | /* Irix 5.2 shared libraries have a fh->adr field of zero, but | |
2277 | the shared libraries are prelinked at a high memory address. | |
2278 | We have to adjust the start address of the object file for this case, | |
2279 | by setting it to the start address of the first procedure in the file. | |
2280 | But we should do no adjustments if we are debugging a .o file, where | |
2281 | the text section (and fh->adr) really starts at zero. */ | |
2282 | text_sect = bfd_get_section_by_name (cur_bfd, ".text"); | |
2283 | if (text_sect != NULL | |
2284 | && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC)) | |
2285 | relocatable = 1; | |
a2f1e2e5 ILT |
2286 | |
2287 | extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack, | |
2288 | sizeof (EXTR) * hdr->iextMax); | |
2289 | ||
2290 | includes_allocated = 30; | |
2291 | includes_used = 0; | |
2292 | psymtab_include_list = (char **) alloca (includes_allocated * | |
2293 | sizeof (char *)); | |
2294 | next_symbol_text_func = mdebug_next_symbol_text; | |
2295 | ||
2296 | dependencies_allocated = 30; | |
2297 | dependencies_used = 0; | |
2298 | dependency_list = | |
2299 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2300 | sizeof (struct partial_symtab *)); | |
2301 | ||
2302 | last_source_file = NULL; | |
2303 | ||
2304 | /* | |
2305 | * Big plan: | |
2306 | * | |
2307 | * Only parse the Local and External symbols, and the Relative FDR. | |
2308 | * Fixup enough of the loader symtab to be able to use it. | |
2309 | * Allocate space only for the file's portions we need to | |
2310 | * look at. (XXX) | |
2311 | */ | |
2312 | ||
2313 | max_gdbinfo = 0; | |
2314 | max_glevel = MIN_GLEVEL; | |
2315 | ||
2316 | /* Allocate the map FDR -> PST. | |
2317 | Minor hack: -O3 images might claim some global data belongs | |
2318 | to FDR -1. We`ll go along with that */ | |
2319 | fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst); | |
2320 | old_chain = make_cleanup (free, fdr_to_pst); | |
2321 | fdr_to_pst++; | |
2322 | { | |
847d9775 | 2323 | struct partial_symtab *pst = new_psymtab ("", objfile, section_offsets); |
a2f1e2e5 ILT |
2324 | fdr_to_pst[-1].pst = pst; |
2325 | FDR_IDX (pst) = -1; | |
2326 | } | |
2327 | ||
2328 | /* Allocate the global pending list. */ | |
2329 | pending_list = | |
2330 | ((struct mdebug_pending **) | |
2331 | obstack_alloc (&objfile->psymbol_obstack, | |
2332 | hdr->ifdMax * sizeof (struct mdebug_pending *))); | |
2333 | memset ((PTR) pending_list, 0, | |
2334 | hdr->ifdMax * sizeof (struct mdebug_pending *)); | |
2335 | ||
2336 | /* Pass 0 over external syms: swap them in. */ | |
2337 | ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR)); | |
2338 | make_cleanup (free, ext_block); | |
2339 | ||
2340 | ext_out = (char *) debug_info->external_ext; | |
2341 | ext_out_end = ext_out + hdr->iextMax * external_ext_size; | |
2342 | ext_in = ext_block; | |
2343 | for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) | |
2344 | (*swap_ext_in) (cur_bfd, ext_out, ext_in); | |
2345 | ||
2346 | /* Pass 1 over external syms: Presize and partition the list */ | |
2347 | ext_in = ext_block; | |
2348 | ext_in_end = ext_in + hdr->iextMax; | |
2349 | for (; ext_in < ext_in_end; ext_in++) | |
2350 | { | |
2351 | /* See calls to complain below. */ | |
2352 | if (ext_in->ifd >= -1 | |
2353 | && ext_in->ifd < hdr->ifdMax | |
2354 | && ext_in->asym.iss >= 0 | |
2355 | && ext_in->asym.iss < hdr->issExtMax) | |
2356 | fdr_to_pst[ext_in->ifd].n_globals++; | |
2357 | } | |
2358 | ||
2359 | /* Pass 1.5 over files: partition out global symbol space */ | |
2360 | s_idx = 0; | |
2361 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) | |
2362 | { | |
2363 | fdr_to_pst[f_idx].globals_offset = s_idx; | |
2364 | s_idx += fdr_to_pst[f_idx].n_globals; | |
2365 | fdr_to_pst[f_idx].n_globals = 0; | |
2366 | } | |
2367 | ||
2368 | /* Pass 2 over external syms: fill in external symbols */ | |
2369 | ext_in = ext_block; | |
2370 | ext_in_end = ext_in + hdr->iextMax; | |
2371 | for (; ext_in < ext_in_end; ext_in++) | |
2372 | { | |
2373 | enum minimal_symbol_type ms_type = mst_text; | |
33c66e44 | 2374 | CORE_ADDR svalue = ext_in->asym.value; |
a2f1e2e5 ILT |
2375 | |
2376 | /* The Irix 5 native tools seem to sometimes generate bogus | |
2377 | external symbols. */ | |
2378 | if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax) | |
2379 | { | |
2380 | complain (&bad_ext_ifd_complaint, ext_in->ifd, hdr->ifdMax); | |
2381 | continue; | |
2382 | } | |
2383 | if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax) | |
2384 | { | |
2385 | complain (&bad_ext_iss_complaint, ext_in->asym.iss, | |
2386 | hdr->issExtMax); | |
2387 | continue; | |
2388 | } | |
2389 | ||
2390 | extern_tab[fdr_to_pst[ext_in->ifd].globals_offset | |
2391 | + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; | |
2392 | ||
73b8e6a9 PS |
2393 | if (ext_in->asym.sc == scUndefined || ext_in->asym.sc == scSUndefined |
2394 | || ext_in->asym.sc == scNil) | |
a2f1e2e5 ILT |
2395 | continue; |
2396 | ||
2397 | name = debug_info->ssext + ext_in->asym.iss; | |
2398 | switch (ext_in->asym.st) | |
2399 | { | |
2400 | case stProc: | |
33c66e44 | 2401 | svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
a2f1e2e5 ILT |
2402 | break; |
2403 | case stStaticProc: | |
2404 | ms_type = mst_file_text; | |
33c66e44 | 2405 | svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
a2f1e2e5 ILT |
2406 | break; |
2407 | case stGlobal: | |
54d478cd | 2408 | if (ext_in->asym.sc == scCommon || ext_in->asym.sc == scSCommon) |
10373914 PS |
2409 | { |
2410 | /* The value of a common symbol is its size, not its address. | |
2411 | Ignore it. */ | |
2412 | continue; | |
2413 | } | |
2414 | else if (ext_in->asym.sc == scData | |
a2f1e2e5 | 2415 | || ext_in->asym.sc == scSData |
10373914 PS |
2416 | || ext_in->asym.sc == scRData |
2417 | || ext_in->asym.sc == scPData | |
2418 | || ext_in->asym.sc == scXData) | |
33c66e44 PS |
2419 | { |
2420 | ms_type = mst_data; | |
2421 | svalue += ANOFFSET (section_offsets, SECT_OFF_DATA); | |
2422 | } | |
a2f1e2e5 | 2423 | else |
33c66e44 PS |
2424 | { |
2425 | ms_type = mst_bss; | |
2426 | svalue += ANOFFSET (section_offsets, SECT_OFF_BSS); | |
2427 | } | |
a2f1e2e5 ILT |
2428 | break; |
2429 | case stLabel: | |
2430 | if (ext_in->asym.sc == scAbs) | |
2431 | ms_type = mst_abs; | |
10373914 PS |
2432 | else if (ext_in->asym.sc == scText |
2433 | || ext_in->asym.sc == scInit | |
2434 | || ext_in->asym.sc == scFini) | |
33c66e44 PS |
2435 | { |
2436 | ms_type = mst_file_text; | |
2437 | svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2438 | } | |
a2f1e2e5 ILT |
2439 | else if (ext_in->asym.sc == scData |
2440 | || ext_in->asym.sc == scSData | |
10373914 PS |
2441 | || ext_in->asym.sc == scRData |
2442 | || ext_in->asym.sc == scPData | |
2443 | || ext_in->asym.sc == scXData) | |
33c66e44 PS |
2444 | { |
2445 | ms_type = mst_file_data; | |
2446 | svalue += ANOFFSET (section_offsets, SECT_OFF_DATA); | |
2447 | } | |
a2f1e2e5 | 2448 | else |
33c66e44 PS |
2449 | { |
2450 | ms_type = mst_file_bss; | |
2451 | svalue += ANOFFSET (section_offsets, SECT_OFF_BSS); | |
2452 | } | |
a2f1e2e5 ILT |
2453 | break; |
2454 | case stLocal: | |
1cb1b16c | 2455 | case stNil: |
a2f1e2e5 ILT |
2456 | /* The alpha has the section start addresses in stLocal symbols |
2457 | whose name starts with a `.'. Skip those but complain for all | |
1cb1b16c PS |
2458 | other stLocal symbols. |
2459 | Irix6 puts the section start addresses in stNil symbols, skip | |
2460 | those too. */ | |
a2f1e2e5 ILT |
2461 | if (name[0] == '.') |
2462 | continue; | |
2463 | /* Fall through. */ | |
2464 | default: | |
2465 | ms_type = mst_unknown; | |
2466 | complain (&unknown_ext_complaint, name); | |
2467 | } | |
33c66e44 | 2468 | prim_record_minimal_symbol (name, svalue, ms_type, objfile); |
a2f1e2e5 ILT |
2469 | } |
2470 | ||
2471 | /* Pass 3 over files, over local syms: fill in static symbols */ | |
2472 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) | |
2473 | { | |
2474 | struct partial_symtab *save_pst; | |
2475 | EXTR *ext_ptr; | |
33c66e44 | 2476 | CORE_ADDR textlow; |
a2f1e2e5 ILT |
2477 | |
2478 | cur_fdr = fh = debug_info->fdr + f_idx; | |
2479 | ||
2480 | if (fh->csym == 0) | |
2481 | { | |
2482 | fdr_to_pst[f_idx].pst = NULL; | |
2483 | continue; | |
2484 | } | |
33c66e44 PS |
2485 | |
2486 | /* Determine the start address for this object file from the | |
2487 | file header and relocate it, except for Irix 5.2 zero fh->adr. */ | |
2488 | if (fh->cpd) | |
2489 | { | |
2490 | textlow = fh->adr; | |
2491 | if (relocatable || textlow != 0) | |
2492 | textlow += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2493 | } | |
2494 | else | |
2495 | textlow = 0; | |
a2f1e2e5 ILT |
2496 | pst = start_psymtab_common (objfile, section_offsets, |
2497 | fdr_name (fh), | |
33c66e44 | 2498 | textlow, |
a2f1e2e5 ILT |
2499 | objfile->global_psymbols.next, |
2500 | objfile->static_psymbols.next); | |
2501 | pst->read_symtab_private = ((char *) | |
2502 | obstack_alloc (&objfile->psymbol_obstack, | |
2503 | sizeof (struct symloc))); | |
2504 | memset ((PTR) pst->read_symtab_private, 0, sizeof (struct symloc)); | |
2505 | ||
2506 | save_pst = pst; | |
2507 | FDR_IDX (pst) = f_idx; | |
2508 | CUR_BFD (pst) = cur_bfd; | |
2509 | DEBUG_SWAP (pst) = debug_swap; | |
2510 | DEBUG_INFO (pst) = debug_info; | |
2511 | PENDING_LIST (pst) = pending_list; | |
2512 | ||
2513 | /* The way to turn this into a symtab is to call... */ | |
2514 | pst->read_symtab = mdebug_psymtab_to_symtab; | |
2515 | ||
2516 | /* Set up language for the pst. | |
2517 | The language from the FDR is used if it is unambigious (e.g. cfront | |
2518 | with native cc and g++ will set the language to C). | |
2519 | Otherwise we have to deduce the language from the filename. | |
2520 | Native ecoff has every header file in a separate FDR, so | |
2521 | deduce_language_from_filename will return language_unknown for | |
2522 | a header file, which is not what we want. | |
2523 | But the FDRs for the header files are after the FDR for the source | |
2524 | file, so we can assign the language of the source file to the | |
2525 | following header files. Then we save the language in the private | |
2526 | pst data so that we can reuse it when building symtabs. */ | |
2527 | prev_language = psymtab_language; | |
2528 | ||
2529 | switch (fh->lang) | |
2530 | { | |
2531 | case langCplusplusV2: | |
2532 | psymtab_language = language_cplus; | |
2533 | break; | |
2534 | default: | |
2535 | psymtab_language = deduce_language_from_filename (fdr_name (fh)); | |
2536 | break; | |
2537 | } | |
2538 | if (psymtab_language == language_unknown) | |
2539 | psymtab_language = prev_language; | |
2540 | PST_PRIVATE (pst)->pst_language = psymtab_language; | |
2541 | ||
2542 | pst->texthigh = pst->textlow; | |
2543 | ||
2544 | /* For stabs-in-ecoff files, the second symbol must be @stab. | |
2545 | This symbol is emitted by mips-tfile to signal that the | |
2546 | current object file uses encapsulated stabs instead of mips | |
2547 | ecoff for local symbols. (It is the second symbol because | |
2548 | the first symbol is the stFile used to signal the start of a | |
2549 | file). */ | |
2550 | processing_gcc_compilation = 0; | |
2551 | if (fh->csym >= 2) | |
2552 | { | |
2553 | (*swap_sym_in) (cur_bfd, | |
2554 | ((char *) debug_info->external_sym | |
2555 | + (fh->isymBase + 1) * external_sym_size), | |
2556 | &sh); | |
2557 | if (STREQ (debug_info->ss + fh->issBase + sh.iss, stabs_symbol)) | |
2558 | processing_gcc_compilation = 2; | |
2559 | } | |
2560 | ||
2561 | if (processing_gcc_compilation != 0) | |
2562 | { | |
2563 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
2564 | { | |
2565 | int type_code; | |
2566 | char *namestring; | |
2567 | ||
2568 | (*swap_sym_in) (cur_bfd, | |
2569 | (((char *) debug_info->external_sym) | |
2570 | + (fh->isymBase + cur_sdx) * external_sym_size), | |
2571 | &sh); | |
2572 | type_code = ECOFF_UNMARK_STAB (sh.index); | |
2573 | if (!ECOFF_IS_STAB (&sh)) | |
2574 | { | |
2575 | if (sh.st == stProc || sh.st == stStaticProc) | |
2576 | { | |
d8831024 | 2577 | CORE_ADDR procaddr; |
a2f1e2e5 | 2578 | long isym; |
72bba93b SG |
2579 | |
2580 | sh.value += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2fe3b329 PS |
2581 | if (sh.st == stStaticProc) |
2582 | { | |
2583 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
2584 | prim_record_minimal_symbol_and_info (namestring, | |
2585 | sh.value, | |
2586 | mst_file_text, | |
2587 | NULL, | |
2588 | SECT_OFF_TEXT, | |
6c310da8 | 2589 | NULL, |
2fe3b329 PS |
2590 | objfile); |
2591 | } | |
72bba93b | 2592 | procaddr = sh.value; |
a2f1e2e5 ILT |
2593 | |
2594 | isym = AUX_GET_ISYM (fh->fBigendian, | |
2595 | (debug_info->external_aux | |
2596 | + fh->iauxBase | |
2597 | + sh.index)); | |
2598 | (*swap_sym_in) (cur_bfd, | |
2599 | ((char *) debug_info->external_sym | |
2600 | + ((fh->isymBase + isym - 1) | |
2601 | * external_sym_size)), | |
2602 | &sh); | |
2603 | if (sh.st == stEnd) | |
2604 | { | |
d8831024 | 2605 | CORE_ADDR high = procaddr + sh.value; |
33c66e44 PS |
2606 | |
2607 | /* Kludge for Irix 5.2 zero fh->adr. */ | |
2608 | if (!relocatable | |
2609 | && (pst->textlow == 0 || procaddr < pst->textlow)) | |
2610 | pst->textlow = procaddr; | |
a2f1e2e5 ILT |
2611 | if (high > pst->texthigh) |
2612 | pst->texthigh = high; | |
2613 | } | |
2614 | } | |
2fe3b329 PS |
2615 | else if (sh.st == stStatic) |
2616 | { | |
2617 | switch (sh.sc) | |
2618 | { | |
2619 | case scUndefined: | |
73b8e6a9 | 2620 | case scSUndefined: |
2fe3b329 PS |
2621 | case scNil: |
2622 | case scAbs: | |
2623 | break; | |
2624 | ||
2625 | case scData: | |
2626 | case scSData: | |
2627 | case scRData: | |
2628 | case scPData: | |
2629 | case scXData: | |
2630 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
2631 | sh.value += ANOFFSET (section_offsets, SECT_OFF_DATA); | |
2632 | prim_record_minimal_symbol_and_info (namestring, | |
2633 | sh.value, | |
2634 | mst_file_data, | |
2635 | NULL, | |
2636 | SECT_OFF_DATA, | |
6c310da8 | 2637 | NULL, |
2fe3b329 PS |
2638 | objfile); |
2639 | break; | |
2640 | ||
2641 | default: | |
2642 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
2643 | sh.value += ANOFFSET (section_offsets, SECT_OFF_BSS); | |
2644 | prim_record_minimal_symbol_and_info (namestring, | |
2645 | sh.value, | |
2646 | mst_file_bss, | |
2647 | NULL, | |
2648 | SECT_OFF_BSS, | |
6c310da8 | 2649 | NULL, |
2fe3b329 PS |
2650 | objfile); |
2651 | break; | |
2652 | } | |
2653 | } | |
a2f1e2e5 ILT |
2654 | continue; |
2655 | } | |
2656 | #define SET_NAMESTRING() \ | |
2657 | namestring = debug_info->ss + fh->issBase + sh.iss | |
2658 | #define CUR_SYMBOL_TYPE type_code | |
2659 | #define CUR_SYMBOL_VALUE sh.value | |
2660 | #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\ | |
2661 | pst = save_pst | |
3a179be1 | 2662 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set) (void)0 |
a2f1e2e5 ILT |
2663 | #define HANDLE_RBRAC(val) \ |
2664 | if ((val) > save_pst->texthigh) save_pst->texthigh = (val); | |
2665 | #include "partial-stab.h" | |
2666 | } | |
2667 | } | |
2668 | else | |
2669 | { | |
2670 | for (cur_sdx = 0; cur_sdx < fh->csym;) | |
2671 | { | |
2672 | char *name; | |
2673 | enum address_class class; | |
2674 | ||
2675 | (*swap_sym_in) (cur_bfd, | |
2676 | ((char *) debug_info->external_sym | |
2677 | + ((fh->isymBase + cur_sdx) | |
2678 | * external_sym_size)), | |
2679 | &sh); | |
2680 | ||
2681 | if (ECOFF_IS_STAB (&sh)) | |
2682 | { | |
2683 | cur_sdx++; | |
2684 | continue; | |
2685 | } | |
2686 | ||
2687 | /* Non absolute static symbols go into the minimal table. */ | |
73b8e6a9 PS |
2688 | if (sh.sc == scUndefined || sh.sc == scSUndefined |
2689 | || sh.sc == scNil | |
a2f1e2e5 ILT |
2690 | || (sh.index == indexNil |
2691 | && (sh.st != stStatic || sh.sc == scAbs))) | |
2692 | { | |
2693 | /* FIXME, premature? */ | |
2694 | cur_sdx++; | |
2695 | continue; | |
2696 | } | |
2697 | ||
2698 | name = debug_info->ss + fh->issBase + sh.iss; | |
2699 | ||
33c66e44 PS |
2700 | switch (sh.sc) |
2701 | { | |
2702 | case scText: | |
73b8e6a9 | 2703 | case scRConst: |
33c66e44 PS |
2704 | /* The value of a stEnd symbol is the displacement from the |
2705 | corresponding start symbol value, do not relocate it. */ | |
2706 | if (sh.st != stEnd) | |
2707 | sh.value += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2708 | break; | |
2709 | case scData: | |
2710 | case scSData: | |
2711 | case scRData: | |
2712 | case scPData: | |
2713 | case scXData: | |
2714 | sh.value += ANOFFSET (section_offsets, SECT_OFF_DATA); | |
2715 | break; | |
2716 | case scBss: | |
2717 | case scSBss: | |
2718 | sh.value += ANOFFSET (section_offsets, SECT_OFF_BSS); | |
2719 | break; | |
2720 | } | |
2721 | ||
a2f1e2e5 ILT |
2722 | switch (sh.st) |
2723 | { | |
d8831024 MA |
2724 | CORE_ADDR high; |
2725 | CORE_ADDR procaddr; | |
a2f1e2e5 ILT |
2726 | int new_sdx; |
2727 | ||
10373914 | 2728 | case stStaticProc: |
72bba93b SG |
2729 | prim_record_minimal_symbol_and_info (name, sh.value, |
2730 | mst_file_text, NULL, | |
6c310da8 SG |
2731 | SECT_OFF_TEXT, NULL, |
2732 | objfile); | |
10373914 | 2733 | |
a2f1e2e5 ILT |
2734 | /* FALLTHROUGH */ |
2735 | ||
10373914 PS |
2736 | case stProc: |
2737 | /* Usually there is a local and a global stProc symbol | |
2738 | for a function. This means that the function name | |
2739 | has already been entered into the mimimal symbol table | |
2740 | while processing the global symbols in pass 2 above. | |
2741 | One notable exception is the PROGRAM name from | |
2742 | f77 compiled executables, it is only put out as | |
2743 | local stProc symbol, and a global MAIN__ stProc symbol | |
2744 | points to it. It doesn't matter though, as gdb is | |
2745 | still able to find the PROGRAM name via the partial | |
2746 | symbol table, and the MAIN__ symbol via the minimal | |
2747 | symbol table. */ | |
d78d4d16 | 2748 | if (sh.st == stProc) |
eae8aa30 | 2749 | add_psymbol_to_list (name, strlen (name), |
d78d4d16 | 2750 | VAR_NAMESPACE, LOC_BLOCK, |
eae8aa30 | 2751 | &objfile->global_psymbols, |
0db3fe94 | 2752 | 0, sh.value, psymtab_language, objfile); |
d78d4d16 | 2753 | else |
eae8aa30 | 2754 | add_psymbol_to_list (name, strlen (name), |
d78d4d16 | 2755 | VAR_NAMESPACE, LOC_BLOCK, |
eae8aa30 | 2756 | &objfile->static_psymbols, |
0db3fe94 | 2757 | 0, sh.value, psymtab_language, objfile); |
d78d4d16 | 2758 | |
a2f1e2e5 ILT |
2759 | /* Skip over procedure to next one. */ |
2760 | if (sh.index >= hdr->iauxMax) | |
2761 | { | |
2762 | /* Should not happen, but does when cross-compiling | |
2763 | with the MIPS compiler. FIXME -- pull later. */ | |
2764 | complain (&index_complaint, name); | |
2765 | new_sdx = cur_sdx + 1; /* Don't skip at all */ | |
2766 | } | |
2767 | else | |
2768 | new_sdx = AUX_GET_ISYM (fh->fBigendian, | |
2769 | (debug_info->external_aux | |
2770 | + fh->iauxBase | |
2771 | + sh.index)); | |
2772 | procaddr = sh.value; | |
2773 | ||
2774 | if (new_sdx <= cur_sdx) | |
2775 | { | |
2776 | /* This should not happen either... FIXME. */ | |
2777 | complain (&aux_index_complaint, name); | |
2778 | new_sdx = cur_sdx + 1; /* Don't skip backward */ | |
2779 | } | |
2780 | ||
2781 | cur_sdx = new_sdx; | |
2782 | (*swap_sym_in) (cur_bfd, | |
2783 | ((char *) debug_info->external_sym | |
2784 | + ((fh->isymBase + cur_sdx - 1) | |
2785 | * external_sym_size)), | |
2786 | &sh); | |
2787 | if (sh.st != stEnd) | |
2788 | continue; | |
33c66e44 PS |
2789 | |
2790 | /* Kludge for Irix 5.2 zero fh->adr. */ | |
2791 | if (!relocatable | |
2792 | && (pst->textlow == 0 || procaddr < pst->textlow)) | |
2793 | pst->textlow = procaddr; | |
2794 | ||
a2f1e2e5 ILT |
2795 | high = procaddr + sh.value; |
2796 | if (high > pst->texthigh) | |
2797 | pst->texthigh = high; | |
2798 | continue; | |
2799 | ||
2800 | case stStatic: /* Variable */ | |
10373914 PS |
2801 | if (sh.sc == scData |
2802 | || sh.sc == scSData | |
2803 | || sh.sc == scRData | |
2804 | || sh.sc == scPData | |
2805 | || sh.sc == scXData) | |
72bba93b SG |
2806 | prim_record_minimal_symbol_and_info (name, sh.value, |
2807 | mst_file_data, NULL, | |
2808 | SECT_OFF_DATA, | |
6c310da8 | 2809 | NULL, |
72bba93b | 2810 | objfile); |
a2f1e2e5 | 2811 | else |
72bba93b SG |
2812 | prim_record_minimal_symbol_and_info (name, sh.value, |
2813 | mst_file_bss, NULL, | |
2814 | SECT_OFF_BSS, | |
6c310da8 | 2815 | NULL, |
72bba93b | 2816 | objfile); |
a2f1e2e5 ILT |
2817 | class = LOC_STATIC; |
2818 | break; | |
2819 | ||
33c66e44 PS |
2820 | case stIndirect:/* Irix5 forward declaration */ |
2821 | /* Skip forward declarations from Irix5 cc */ | |
2822 | goto skip; | |
2823 | ||
a2f1e2e5 ILT |
2824 | case stTypedef:/* Typedef */ |
2825 | /* Skip typedefs for forward declarations and opaque | |
db2302cb PS |
2826 | structs from alpha and mips cc. */ |
2827 | if (sh.iss == 0 || has_opaque_xref (fh, &sh)) | |
a2f1e2e5 ILT |
2828 | goto skip; |
2829 | class = LOC_TYPEDEF; | |
2830 | break; | |
2831 | ||
2832 | case stConstant: /* Constant decl */ | |
2833 | class = LOC_CONST; | |
2834 | break; | |
2835 | ||
2836 | case stUnion: | |
2837 | case stStruct: | |
2838 | case stEnum: | |
2839 | case stBlock: /* { }, str, un, enum*/ | |
2840 | /* Do not create a partial symbol for cc unnamed aggregates | |
2841 | and gcc empty aggregates. */ | |
54d478cd PS |
2842 | if ((sh.sc == scInfo |
2843 | || sh.sc == scCommon || sh.sc == scSCommon) | |
a2f1e2e5 ILT |
2844 | && sh.iss != 0 |
2845 | && sh.index != cur_sdx + 2) | |
2846 | { | |
eae8aa30 | 2847 | add_psymbol_to_list (name, strlen (name), |
a2f1e2e5 | 2848 | STRUCT_NAMESPACE, LOC_TYPEDEF, |
eae8aa30 | 2849 | &objfile->static_psymbols, |
0db3fe94 | 2850 | 0, (CORE_ADDR) 0, |
a2f1e2e5 ILT |
2851 | psymtab_language, objfile); |
2852 | } | |
9b041f69 | 2853 | handle_psymbol_enumerators (objfile, fh, sh.st, sh.value); |
847d9775 | 2854 | |
a2f1e2e5 ILT |
2855 | /* Skip over the block */ |
2856 | new_sdx = sh.index; | |
2857 | if (new_sdx <= cur_sdx) | |
2858 | { | |
2859 | /* This happens with the Ultrix kernel. */ | |
2860 | complain (&block_index_complaint, name); | |
2861 | new_sdx = cur_sdx + 1; /* Don't skip backward */ | |
2862 | } | |
2863 | cur_sdx = new_sdx; | |
2864 | continue; | |
2865 | ||
2866 | case stFile: /* File headers */ | |
2867 | case stLabel: /* Labels */ | |
2868 | case stEnd: /* Ends of files */ | |
2869 | goto skip; | |
2870 | ||
2871 | case stLocal: /* Local variables */ | |
2872 | /* Normally these are skipped because we skip over | |
2873 | all blocks we see. However, these can occur | |
2874 | as visible symbols in a .h file that contains code. */ | |
2875 | goto skip; | |
2876 | ||
2877 | default: | |
2878 | /* Both complaints are valid: one gives symbol name, | |
2879 | the other the offending symbol type. */ | |
2880 | complain (&unknown_sym_complaint, name); | |
2881 | complain (&unknown_st_complaint, sh.st); | |
2882 | cur_sdx++; | |
2883 | continue; | |
2884 | } | |
2885 | /* Use this gdb symbol */ | |
eae8aa30 | 2886 | add_psymbol_to_list (name, strlen (name), |
a2f1e2e5 | 2887 | VAR_NAMESPACE, class, |
0db3fe94 PS |
2888 | &objfile->static_psymbols, |
2889 | 0, sh.value, psymtab_language, objfile); | |
a2f1e2e5 ILT |
2890 | skip: |
2891 | cur_sdx++; /* Go to next file symbol */ | |
2892 | } | |
2893 | ||
2894 | /* Now do enter the external symbols. */ | |
2895 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; | |
2896 | cur_sdx = fdr_to_pst[f_idx].n_globals; | |
2897 | PST_PRIVATE (save_pst)->extern_count = cur_sdx; | |
2898 | PST_PRIVATE (save_pst)->extern_tab = ext_ptr; | |
2899 | for (; --cur_sdx >= 0; ext_ptr++) | |
2900 | { | |
2901 | enum address_class class; | |
2902 | SYMR *psh; | |
2903 | char *name; | |
33c66e44 | 2904 | CORE_ADDR svalue; |
a2f1e2e5 ILT |
2905 | |
2906 | if (ext_ptr->ifd != f_idx) | |
2907 | abort (); | |
2908 | psh = &ext_ptr->asym; | |
2909 | ||
2910 | /* Do not add undefined symbols to the partial symbol table. */ | |
73b8e6a9 PS |
2911 | if (psh->sc == scUndefined || psh->sc == scSUndefined |
2912 | || psh->sc == scNil) | |
a2f1e2e5 ILT |
2913 | continue; |
2914 | ||
33c66e44 PS |
2915 | svalue = psh->value; |
2916 | switch (psh->sc) | |
2917 | { | |
2918 | case scText: | |
73b8e6a9 | 2919 | case scRConst: |
33c66e44 PS |
2920 | svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
2921 | break; | |
2922 | case scData: | |
2923 | case scSData: | |
2924 | case scRData: | |
2925 | case scPData: | |
2926 | case scXData: | |
2927 | svalue += ANOFFSET (section_offsets, SECT_OFF_DATA); | |
2928 | break; | |
2929 | case scBss: | |
2930 | case scSBss: | |
2931 | svalue += ANOFFSET (section_offsets, SECT_OFF_BSS); | |
2932 | break; | |
2933 | } | |
2934 | ||
a2f1e2e5 ILT |
2935 | switch (psh->st) |
2936 | { | |
2937 | case stNil: | |
2938 | /* These are generated for static symbols in .o files, | |
2939 | ignore them. */ | |
2940 | continue; | |
2941 | case stProc: | |
2942 | case stStaticProc: | |
db2302cb PS |
2943 | /* External procedure symbols have been entered |
2944 | into the minimal symbol table in pass 2 above. | |
2945 | Ignore them, as parse_external will ignore them too. */ | |
2946 | continue; | |
a2f1e2e5 ILT |
2947 | case stLabel: |
2948 | class = LOC_LABEL; | |
2949 | break; | |
2950 | default: | |
2951 | complain (&unknown_ext_complaint, | |
2952 | debug_info->ssext + psh->iss); | |
2953 | /* Fall through, pretend it's global. */ | |
2954 | case stGlobal: | |
54d478cd PS |
2955 | /* Global common symbols are resolved by the runtime loader, |
2956 | ignore them. */ | |
2957 | if (psh->sc == scCommon || psh->sc == scSCommon) | |
2958 | continue; | |
2959 | ||
a2f1e2e5 ILT |
2960 | class = LOC_STATIC; |
2961 | break; | |
2962 | } | |
2963 | name = debug_info->ssext + psh->iss; | |
eae8aa30 FF |
2964 | add_psymbol_to_list (name, strlen (name), |
2965 | VAR_NAMESPACE, class, | |
2966 | &objfile->global_psymbols, | |
2967 | 0, svalue, | |
2968 | psymtab_language, objfile); | |
a2f1e2e5 ILT |
2969 | } |
2970 | } | |
2971 | ||
2972 | /* Link pst to FDR. end_psymtab returns NULL if the psymtab was | |
2973 | empty and put on the free list. */ | |
2974 | fdr_to_pst[f_idx].pst = end_psymtab (save_pst, | |
2975 | psymtab_include_list, includes_used, | |
2976 | -1, save_pst->texthigh, | |
3a179be1 | 2977 | dependency_list, dependencies_used, textlow_not_set); |
df1e1074 PS |
2978 | includes_used = 0; |
2979 | dependencies_used = 0; | |
2980 | ||
a2f1e2e5 ILT |
2981 | if (objfile->ei.entry_point >= save_pst->textlow && |
2982 | objfile->ei.entry_point < save_pst->texthigh) | |
2983 | { | |
2984 | objfile->ei.entry_file_lowpc = save_pst->textlow; | |
2985 | objfile->ei.entry_file_highpc = save_pst->texthigh; | |
2986 | } | |
76212295 PS |
2987 | |
2988 | /* The objfile has its functions reordered if this partial symbol | |
2989 | table overlaps any other partial symbol table. | |
2990 | We cannot assume a reordered objfile if a partial symbol table | |
2991 | is contained within another partial symbol table, as partial symbol | |
2992 | tables for include files with executable code are contained | |
2993 | within the partial symbol table for the including source file, | |
2994 | and we do not want to flag the objfile reordered for these cases. | |
2995 | ||
2996 | This strategy works well for Irix-5.2 shared libraries, but we | |
2997 | might have to use a more elaborate (and slower) algorithm for | |
2998 | other cases. */ | |
2999 | save_pst = fdr_to_pst[f_idx].pst; | |
3000 | if (save_pst != NULL | |
3001 | && save_pst->textlow != 0 | |
3002 | && !(objfile->flags & OBJF_REORDERED)) | |
3003 | { | |
3004 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
3005 | { | |
3006 | if (save_pst != pst | |
3007 | && save_pst->textlow >= pst->textlow | |
3008 | && save_pst->textlow < pst->texthigh | |
3009 | && save_pst->texthigh > pst->texthigh) | |
3010 | { | |
3011 | objfile->flags |= OBJF_REORDERED; | |
3012 | break; | |
3013 | } | |
3014 | } | |
3015 | } | |
a2f1e2e5 ILT |
3016 | } |
3017 | ||
3018 | /* Now scan the FDRs for dependencies */ | |
3019 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) | |
3020 | { | |
3021 | fh = f_idx + debug_info->fdr; | |
3022 | pst = fdr_to_pst[f_idx].pst; | |
3023 | ||
3024 | if (pst == (struct partial_symtab *)NULL) | |
3025 | continue; | |
3026 | ||
3027 | /* This should catch stabs-in-ecoff. */ | |
3028 | if (fh->crfd <= 1) | |
3029 | continue; | |
3030 | ||
3031 | /* Skip the first file indirect entry as it is a self dependency | |
3032 | for source files or a reverse .h -> .c dependency for header files. */ | |
3033 | pst->number_of_dependencies = 0; | |
3034 | pst->dependencies = | |
3035 | ((struct partial_symtab **) | |
3036 | obstack_alloc (&objfile->psymbol_obstack, | |
3037 | ((fh->crfd - 1) | |
3038 | * sizeof (struct partial_symtab *)))); | |
3039 | for (s_idx = 1; s_idx < fh->crfd; s_idx++) | |
3040 | { | |
3041 | RFDT rh; | |
3042 | ||
3043 | (*swap_rfd_in) (cur_bfd, | |
3044 | ((char *) debug_info->external_rfd | |
3045 | + (fh->rfdBase + s_idx) * external_rfd_size), | |
3046 | &rh); | |
3047 | if (rh < 0 || rh >= hdr->ifdMax) | |
3048 | { | |
3049 | complain (&bad_file_number_complaint, rh); | |
3050 | continue; | |
3051 | } | |
3052 | ||
3053 | /* Skip self dependencies of header files. */ | |
3054 | if (rh == f_idx) | |
3055 | continue; | |
3056 | ||
3057 | /* Do not add to dependeny list if psymtab was empty. */ | |
3058 | if (fdr_to_pst[rh].pst == (struct partial_symtab *)NULL) | |
3059 | continue; | |
3060 | pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst; | |
3061 | } | |
3062 | } | |
10373914 PS |
3063 | |
3064 | /* Remove the dummy psymtab created for -O3 images above, if it is | |
3065 | still empty, to enable the detection of stripped executables. */ | |
3066 | if (objfile->psymtabs->next == NULL | |
3067 | && objfile->psymtabs->number_of_dependencies == 0 | |
3068 | && objfile->psymtabs->n_global_syms == 0 | |
3069 | && objfile->psymtabs->n_static_syms == 0) | |
3070 | objfile->psymtabs = NULL; | |
a2f1e2e5 ILT |
3071 | do_cleanups (old_chain); |
3072 | } | |
3073 | ||
847d9775 PS |
3074 | /* If the current psymbol has an enumerated type, we need to add |
3075 | all the the enum constants to the partial symbol table. */ | |
3076 | ||
3077 | static void | |
9b041f69 | 3078 | handle_psymbol_enumerators (objfile, fh, stype, svalue) |
847d9775 PS |
3079 | struct objfile *objfile; |
3080 | FDR *fh; | |
3081 | int stype; | |
9b041f69 | 3082 | CORE_ADDR svalue; |
847d9775 PS |
3083 | { |
3084 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
3085 | void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) | |
3086 | = debug_swap->swap_sym_in; | |
3087 | char *ext_sym = ((char *) debug_info->external_sym | |
3088 | + ((fh->isymBase + cur_sdx + 1) * external_sym_size)); | |
3089 | SYMR sh; | |
3090 | TIR tir; | |
3091 | ||
3092 | switch (stype) | |
3093 | { | |
3094 | case stEnum: | |
3095 | break; | |
3096 | ||
3097 | case stBlock: | |
3098 | /* It is an enumerated type if the next symbol entry is a stMember | |
3099 | and its auxiliary index is indexNil or its auxiliary entry | |
9b041f69 PS |
3100 | is a plain btNil or btVoid. |
3101 | Alpha cc -migrate enums are recognized by a zero index and | |
3102 | a zero symbol value. */ | |
847d9775 PS |
3103 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); |
3104 | if (sh.st != stMember) | |
3105 | return; | |
3106 | ||
9b041f69 PS |
3107 | if (sh.index == indexNil |
3108 | || (sh.index == 0 && svalue == 0)) | |
847d9775 | 3109 | break; |
6187dfac ILT |
3110 | (*debug_swap->swap_tir_in) (fh->fBigendian, |
3111 | &(debug_info->external_aux | |
3112 | + fh->iauxBase + sh.index)->a_ti, | |
3113 | &tir); | |
847d9775 PS |
3114 | if ((tir.bt != btNil && tir.bt != btVoid) || tir.tq0 != tqNil) |
3115 | return; | |
3116 | break; | |
3117 | ||
3118 | default: | |
3119 | return; | |
3120 | } | |
3121 | ||
3122 | for (;;) | |
3123 | { | |
3124 | char *name; | |
3125 | ||
3126 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); | |
3127 | if (sh.st != stMember) | |
3128 | break; | |
3129 | name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
3130 | ||
3131 | /* Note that the value doesn't matter for enum constants | |
3132 | in psymtabs, just in symtabs. */ | |
eae8aa30 | 3133 | add_psymbol_to_list (name, strlen (name), |
847d9775 | 3134 | VAR_NAMESPACE, LOC_CONST, |
eae8aa30 | 3135 | &objfile->static_psymbols, 0, |
0db3fe94 | 3136 | (CORE_ADDR) 0, psymtab_language, objfile); |
847d9775 PS |
3137 | ext_sym += external_sym_size; |
3138 | } | |
3139 | } | |
a2f1e2e5 ILT |
3140 | |
3141 | static char * | |
2dd30c72 FF |
3142 | mdebug_next_symbol_text (objfile) |
3143 | struct objfile *objfile; /* argument objfile is currently unused */ | |
a2f1e2e5 ILT |
3144 | { |
3145 | SYMR sh; | |
3146 | ||
3147 | cur_sdx++; | |
3148 | (*debug_swap->swap_sym_in) (cur_bfd, | |
3149 | ((char *) debug_info->external_sym | |
3150 | + ((cur_fdr->isymBase + cur_sdx) | |
3151 | * debug_swap->external_sym_size)), | |
3152 | &sh); | |
3153 | return debug_info->ss + cur_fdr->issBase + sh.iss; | |
3154 | } | |
3155 | ||
3156 | /* Ancillary function to psymtab_to_symtab(). Does all the work | |
3157 | for turning the partial symtab PST into a symtab, recurring | |
3158 | first on all dependent psymtabs. The argument FILENAME is | |
3159 | only passed so we can see in debug stack traces what file | |
3160 | is being read. | |
3161 | ||
3162 | This function has a split personality, based on whether the | |
3163 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. | |
3164 | The flow of control and even the memory allocation differs. FIXME. */ | |
3165 | ||
3166 | static void | |
3167 | psymtab_to_symtab_1 (pst, filename) | |
3168 | struct partial_symtab *pst; | |
3169 | char *filename; | |
3170 | { | |
3171 | bfd_size_type external_sym_size; | |
3172 | bfd_size_type external_pdr_size; | |
3173 | void (*swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)); | |
3174 | void (*swap_pdr_in) PARAMS ((bfd *, PTR, PDR *)); | |
3175 | int i; | |
3176 | struct symtab *st; | |
3177 | FDR *fh; | |
3178 | struct linetable *lines; | |
9b041f69 | 3179 | CORE_ADDR lowest_pdr_addr = 0; |
a2f1e2e5 ILT |
3180 | |
3181 | if (pst->readin) | |
3182 | return; | |
3183 | pst->readin = 1; | |
3184 | ||
3185 | /* Read in all partial symbtabs on which this one is dependent. | |
3186 | NOTE that we do have circular dependencies, sigh. We solved | |
3187 | that by setting pst->readin before this point. */ | |
3188 | ||
3189 | for (i = 0; i < pst->number_of_dependencies; i++) | |
3190 | if (!pst->dependencies[i]->readin) | |
3191 | { | |
3192 | /* Inform about additional files to be read in. */ | |
3193 | if (info_verbose) | |
3194 | { | |
3195 | fputs_filtered (" ", gdb_stdout); | |
3196 | wrap_here (""); | |
3197 | fputs_filtered ("and ", gdb_stdout); | |
3198 | wrap_here (""); | |
3199 | printf_filtered ("%s...", | |
3200 | pst->dependencies[i]->filename); | |
3201 | wrap_here (""); /* Flush output */ | |
3202 | gdb_flush (gdb_stdout); | |
3203 | } | |
3204 | /* We only pass the filename for debug purposes */ | |
3205 | psymtab_to_symtab_1 (pst->dependencies[i], | |
3206 | pst->dependencies[i]->filename); | |
3207 | } | |
3208 | ||
3209 | /* Do nothing if this is a dummy psymtab. */ | |
3210 | ||
3211 | if (pst->n_global_syms == 0 && pst->n_static_syms == 0 | |
3212 | && pst->textlow == 0 && pst->texthigh == 0) | |
3213 | return; | |
3214 | ||
3215 | /* Now read the symbols for this symtab */ | |
3216 | ||
3217 | cur_bfd = CUR_BFD (pst); | |
3218 | debug_swap = DEBUG_SWAP (pst); | |
3219 | debug_info = DEBUG_INFO (pst); | |
3220 | pending_list = PENDING_LIST (pst); | |
3221 | external_sym_size = debug_swap->external_sym_size; | |
3222 | external_pdr_size = debug_swap->external_pdr_size; | |
3223 | swap_sym_in = debug_swap->swap_sym_in; | |
3224 | swap_pdr_in = debug_swap->swap_pdr_in; | |
3225 | current_objfile = pst->objfile; | |
3226 | cur_fd = FDR_IDX (pst); | |
3227 | fh = ((cur_fd == -1) | |
3228 | ? (FDR *) NULL | |
3229 | : debug_info->fdr + cur_fd); | |
3230 | cur_fdr = fh; | |
3231 | ||
3232 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ | |
3233 | processing_gcc_compilation = 0; | |
3234 | if (fh != (FDR *) NULL && fh->csym >= 2) | |
3235 | { | |
3236 | SYMR sh; | |
3237 | ||
3238 | (*swap_sym_in) (cur_bfd, | |
3239 | ((char *) debug_info->external_sym | |
3240 | + (fh->isymBase + 1) * external_sym_size), | |
3241 | &sh); | |
3242 | if (STREQ (debug_info->ss + fh->issBase + sh.iss, | |
3243 | stabs_symbol)) | |
3244 | { | |
3245 | /* We indicate that this is a GCC compilation so that certain | |
3246 | features will be enabled in stabsread/dbxread. */ | |
3247 | processing_gcc_compilation = 2; | |
3248 | } | |
3249 | } | |
3250 | ||
3251 | if (processing_gcc_compilation != 0) | |
3252 | { | |
a2f1e2e5 ILT |
3253 | |
3254 | /* This symbol table contains stabs-in-ecoff entries. */ | |
3255 | ||
3256 | /* Parse local symbols first */ | |
3257 | ||
3258 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */ | |
3259 | { | |
3260 | current_objfile = NULL; | |
3261 | return; | |
3262 | } | |
3263 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
3264 | { | |
3265 | SYMR sh; | |
3266 | char *name; | |
3267 | CORE_ADDR valu; | |
3268 | ||
3269 | (*swap_sym_in) (cur_bfd, | |
3270 | (((char *) debug_info->external_sym) | |
3271 | + (fh->isymBase + cur_sdx) * external_sym_size), | |
3272 | &sh); | |
3273 | name = debug_info->ss + fh->issBase + sh.iss; | |
3274 | valu = sh.value; | |
3275 | if (ECOFF_IS_STAB (&sh)) | |
3276 | { | |
3277 | int type_code = ECOFF_UNMARK_STAB (sh.index); | |
ae5c71d6 PS |
3278 | |
3279 | /* We should never get non N_STAB symbols here, but they | |
3280 | should be harmless, so keep process_one_symbol from | |
3281 | complaining about them. */ | |
3282 | if (type_code & N_STAB) | |
3283 | { | |
3284 | process_one_symbol (type_code, 0, valu, name, | |
3285 | pst->section_offsets, pst->objfile); | |
3286 | } | |
a2f1e2e5 ILT |
3287 | if (type_code == N_FUN) |
3288 | { | |
3289 | /* Make up special symbol to contain | |
3290 | procedure specific info */ | |
3291 | struct mips_extra_func_info *e = | |
3292 | ((struct mips_extra_func_info *) | |
3293 | obstack_alloc (¤t_objfile->symbol_obstack, | |
3294 | sizeof (struct mips_extra_func_info))); | |
3295 | struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME); | |
3f403f6a PS |
3296 | |
3297 | memset ((PTR) e, 0, sizeof (struct mips_extra_func_info)); | |
a2f1e2e5 ILT |
3298 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; |
3299 | SYMBOL_CLASS (s) = LOC_CONST; | |
bbcc95bd | 3300 | SYMBOL_TYPE (s) = mdebug_type_void; |
a2f1e2e5 | 3301 | SYMBOL_VALUE (s) = (long) e; |
45d6f623 | 3302 | e->pdr.framereg = -1; |
a2f1e2e5 ILT |
3303 | add_symbol_to_list (s, &local_symbols); |
3304 | } | |
3305 | } | |
bb7cb982 | 3306 | else if (sh.st == stLabel) |
a2f1e2e5 | 3307 | { |
bb7cb982 JK |
3308 | if (sh.index == indexNil) |
3309 | { | |
3310 | /* This is what the gcc2_compiled and __gnu_compiled_* | |
3311 | show up as. So don't complain. */ | |
3312 | ; | |
3313 | } | |
3314 | else | |
80ac0116 SS |
3315 | { |
3316 | /* Handle encoded stab line number. */ | |
3317 | valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT); | |
3318 | record_line (current_subfile, sh.index, valu); | |
3319 | } | |
a2f1e2e5 | 3320 | } |
2fe3b329 PS |
3321 | else if (sh.st == stProc || sh.st == stStaticProc |
3322 | || sh.st == stStatic || sh.st == stEnd) | |
a2f1e2e5 ILT |
3323 | /* These are generated by gcc-2.x, do not complain */ |
3324 | ; | |
3325 | else | |
3326 | complain (&stab_unknown_complaint, name); | |
3327 | } | |
436d4143 | 3328 | st = end_symtab (pst->texthigh, pst->objfile, SECT_OFF_TEXT); |
a2f1e2e5 ILT |
3329 | end_stabs (); |
3330 | ||
3331 | /* Sort the symbol table now, we are done adding symbols to it. | |
3332 | We must do this before parse_procedure calls lookup_symbol. */ | |
3333 | sort_symtab_syms (st); | |
3334 | ||
11d26982 PS |
3335 | /* There used to be a call to sort_blocks here, but this should not |
3336 | be necessary for stabs symtabs. And as sort_blocks modifies the | |
3337 | start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK, | |
3338 | it did the wrong thing if the first procedure in a file was | |
3339 | generated via asm statements. */ | |
a2f1e2e5 ILT |
3340 | |
3341 | /* Fill in procedure info next. */ | |
9b041f69 | 3342 | if (fh->cpd > 0) |
a2f1e2e5 | 3343 | { |
9b041f69 PS |
3344 | PDR *pr_block; |
3345 | struct cleanup *old_chain; | |
3346 | char *pdr_ptr; | |
3347 | char *pdr_end; | |
3348 | PDR *pdr_in; | |
3349 | PDR *pdr_in_end; | |
3350 | ||
3351 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
3352 | old_chain = make_cleanup (free, pr_block); | |
3353 | ||
3354 | pdr_ptr = ((char *) debug_info->external_pdr | |
3355 | + fh->ipdFirst * external_pdr_size); | |
3356 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
3357 | pdr_in = pr_block; | |
3358 | for (; | |
3359 | pdr_ptr < pdr_end; | |
3360 | pdr_ptr += external_pdr_size, pdr_in++) | |
a2f1e2e5 | 3361 | { |
9b041f69 PS |
3362 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); |
3363 | ||
3364 | /* Determine lowest PDR address, the PDRs are not always | |
3365 | sorted. */ | |
3366 | if (pdr_in == pr_block) | |
3367 | lowest_pdr_addr = pdr_in->adr; | |
3368 | else if (pdr_in->adr < lowest_pdr_addr) | |
3369 | lowest_pdr_addr = pdr_in->adr; | |
a2f1e2e5 | 3370 | } |
9b041f69 PS |
3371 | |
3372 | pdr_in = pr_block; | |
3373 | pdr_in_end = pdr_in + fh->cpd; | |
3374 | for (; pdr_in < pdr_in_end; pdr_in++) | |
3375 | parse_procedure (pdr_in, st, lowest_pdr_addr, pst); | |
3376 | ||
3377 | do_cleanups (old_chain); | |
a2f1e2e5 ILT |
3378 | } |
3379 | } | |
3380 | else | |
3381 | { | |
3382 | /* This symbol table contains ordinary ecoff entries. */ | |
3383 | ||
a2f1e2e5 ILT |
3384 | int f_max; |
3385 | int maxlines; | |
3386 | EXTR *ext_ptr; | |
3387 | ||
3388 | /* How many symbols will we need */ | |
3389 | /* FIXME, this does not count enum values. */ | |
3390 | f_max = pst->n_global_syms + pst->n_static_syms; | |
3391 | if (fh == 0) | |
3392 | { | |
3393 | maxlines = 0; | |
3394 | st = new_symtab ("unknown", f_max, 0, pst->objfile); | |
3395 | } | |
3396 | else | |
3397 | { | |
3398 | f_max += fh->csym + fh->cpd; | |
3399 | maxlines = 2 * fh->cline; | |
3400 | st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile); | |
3401 | ||
3402 | /* The proper language was already determined when building | |
3403 | the psymtab, use it. */ | |
3404 | st->language = PST_PRIVATE (pst)->pst_language; | |
3405 | } | |
3406 | ||
3407 | psymtab_language = st->language; | |
3408 | ||
3409 | lines = LINETABLE (st); | |
3410 | ||
3411 | /* Get a new lexical context */ | |
3412 | ||
3413 | push_parse_stack (); | |
3414 | top_stack->cur_st = st; | |
3415 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st), | |
3416 | STATIC_BLOCK); | |
33c66e44 | 3417 | BLOCK_START (top_stack->cur_block) = pst->textlow; |
a2f1e2e5 ILT |
3418 | BLOCK_END (top_stack->cur_block) = 0; |
3419 | top_stack->blocktype = stFile; | |
3420 | top_stack->maxsyms = 2 * f_max; | |
3421 | top_stack->cur_type = 0; | |
3422 | top_stack->procadr = 0; | |
3423 | top_stack->numargs = 0; | |
41270571 | 3424 | found_ecoff_debugging_info = 0; |
a2f1e2e5 ILT |
3425 | |
3426 | if (fh) | |
3427 | { | |
3428 | char *sym_ptr; | |
3429 | char *sym_end; | |
3430 | ||
3431 | /* Parse local symbols first */ | |
3432 | sym_ptr = ((char *) debug_info->external_sym | |
3433 | + fh->isymBase * external_sym_size); | |
3434 | sym_end = sym_ptr + fh->csym * external_sym_size; | |
3435 | while (sym_ptr < sym_end) | |
3436 | { | |
3437 | SYMR sh; | |
3438 | int c; | |
3439 | ||
3440 | (*swap_sym_in) (cur_bfd, sym_ptr, &sh); | |
3441 | c = parse_symbol (&sh, | |
3442 | debug_info->external_aux + fh->iauxBase, | |
72bba93b | 3443 | sym_ptr, fh->fBigendian, pst->section_offsets); |
a2f1e2e5 ILT |
3444 | sym_ptr += c * external_sym_size; |
3445 | } | |
3446 | ||
3447 | /* Linenumbers. At the end, check if we can save memory. | |
3448 | parse_lines has to look ahead an arbitrary number of PDR | |
3449 | structures, so we swap them all first. */ | |
3450 | if (fh->cpd > 0) | |
3451 | { | |
3452 | PDR *pr_block; | |
3453 | struct cleanup *old_chain; | |
3454 | char *pdr_ptr; | |
3455 | char *pdr_end; | |
3456 | PDR *pdr_in; | |
3457 | PDR *pdr_in_end; | |
3458 | ||
3459 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
3460 | ||
3461 | old_chain = make_cleanup (free, pr_block); | |
3462 | ||
3463 | pdr_ptr = ((char *) debug_info->external_pdr | |
3464 | + fh->ipdFirst * external_pdr_size); | |
3465 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
3466 | pdr_in = pr_block; | |
3467 | for (; | |
3468 | pdr_ptr < pdr_end; | |
3469 | pdr_ptr += external_pdr_size, pdr_in++) | |
9b041f69 PS |
3470 | { |
3471 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
3472 | ||
3473 | /* Determine lowest PDR address, the PDRs are not always | |
3474 | sorted. */ | |
3475 | if (pdr_in == pr_block) | |
3476 | lowest_pdr_addr = pdr_in->adr; | |
3477 | else if (pdr_in->adr < lowest_pdr_addr) | |
3478 | lowest_pdr_addr = pdr_in->adr; | |
3479 | } | |
a2f1e2e5 | 3480 | |
9b041f69 | 3481 | parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr); |
a2f1e2e5 ILT |
3482 | if (lines->nitems < fh->cline) |
3483 | lines = shrink_linetable (lines); | |
3484 | ||
3485 | /* Fill in procedure info next. */ | |
3486 | pdr_in = pr_block; | |
3487 | pdr_in_end = pdr_in + fh->cpd; | |
3488 | for (; pdr_in < pdr_in_end; pdr_in++) | |
9b041f69 | 3489 | parse_procedure (pdr_in, 0, lowest_pdr_addr, pst); |
a2f1e2e5 ILT |
3490 | |
3491 | do_cleanups (old_chain); | |
3492 | } | |
3493 | } | |
3494 | ||
3495 | LINETABLE (st) = lines; | |
3496 | ||
3497 | /* .. and our share of externals. | |
3498 | XXX use the global list to speed up things here. how? | |
3499 | FIXME, Maybe quit once we have found the right number of ext's? */ | |
3500 | top_stack->cur_st = st; | |
3501 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
3502 | GLOBAL_BLOCK); | |
3503 | top_stack->blocktype = stFile; | |
3504 | top_stack->maxsyms | |
3505 | = (debug_info->symbolic_header.isymMax | |
3506 | + debug_info->symbolic_header.ipdMax | |
3507 | + debug_info->symbolic_header.iextMax); | |
3508 | ||
3509 | ext_ptr = PST_PRIVATE (pst)->extern_tab; | |
3510 | for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) | |
db2302cb | 3511 | parse_external (ext_ptr, fh->fBigendian, pst->section_offsets); |
a2f1e2e5 ILT |
3512 | |
3513 | /* If there are undefined symbols, tell the user. | |
3514 | The alpha has an undefined symbol for every symbol that is | |
3515 | from a shared library, so tell the user only if verbose is on. */ | |
3516 | if (info_verbose && n_undef_symbols) | |
3517 | { | |
3518 | printf_filtered ("File %s contains %d unresolved references:", | |
3519 | st->filename, n_undef_symbols); | |
3520 | printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n", | |
3521 | n_undef_vars, n_undef_procs, n_undef_labels); | |
3522 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; | |
3523 | ||
3524 | } | |
3525 | pop_parse_stack (); | |
3526 | ||
72bba93b SG |
3527 | st->primary = 1; |
3528 | ||
a2f1e2e5 ILT |
3529 | /* Sort the symbol table now, we are done adding symbols to it.*/ |
3530 | sort_symtab_syms (st); | |
3531 | ||
3532 | sort_blocks (st); | |
3533 | } | |
3534 | ||
3535 | /* Now link the psymtab and the symtab. */ | |
3536 | pst->symtab = st; | |
3537 | ||
3538 | current_objfile = NULL; | |
3539 | } | |
3540 | \f | |
3541 | /* Ancillary parsing procedures. */ | |
3542 | ||
db2302cb PS |
3543 | /* Return 1 if the symbol pointed to by SH has a cross reference |
3544 | to an opaque aggregate type, else 0. */ | |
3545 | ||
3546 | static int | |
3547 | has_opaque_xref (fh, sh) | |
3548 | FDR *fh; | |
3549 | SYMR *sh; | |
3550 | { | |
3551 | TIR tir; | |
3552 | union aux_ext *ax; | |
3553 | RNDXR rn[1]; | |
3554 | unsigned int rf; | |
3555 | ||
3556 | if (sh->index == indexNil) | |
3557 | return 0; | |
3558 | ||
3559 | ax = debug_info->external_aux + fh->iauxBase + sh->index; | |
6187dfac | 3560 | (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir); |
db2302cb PS |
3561 | if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum) |
3562 | return 0; | |
3563 | ||
3564 | ax++; | |
6187dfac | 3565 | (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn); |
db2302cb PS |
3566 | if (rn->rfd == 0xfff) |
3567 | rf = AUX_GET_ISYM (fh->fBigendian, ax + 1); | |
3568 | else | |
3569 | rf = rn->rfd; | |
3570 | if (rf != -1) | |
3571 | return 0; | |
3572 | return 1; | |
3573 | } | |
3574 | ||
a2f1e2e5 ILT |
3575 | /* Lookup the type at relative index RN. Return it in TPP |
3576 | if found and in any event come up with its name PNAME. | |
3577 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). | |
3578 | Return value says how many aux symbols we ate. */ | |
3579 | ||
3580 | static int | |
3581 | cross_ref (fd, ax, tpp, type_code, pname, bigend, sym_name) | |
3582 | int fd; | |
3583 | union aux_ext *ax; | |
3584 | struct type **tpp; | |
3585 | enum type_code type_code; /* Use to alloc new type if none is found. */ | |
3586 | char **pname; | |
3587 | int bigend; | |
3588 | char *sym_name; | |
3589 | { | |
3590 | RNDXR rn[1]; | |
3591 | unsigned int rf; | |
3592 | int result = 1; | |
3593 | FDR *fh; | |
3594 | char *esh; | |
3595 | SYMR sh; | |
3596 | int xref_fd; | |
3597 | struct mdebug_pending *pend; | |
3598 | ||
3599 | *tpp = (struct type *)NULL; | |
3600 | ||
6187dfac | 3601 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); |
a2f1e2e5 ILT |
3602 | |
3603 | /* Escape index means 'the next one' */ | |
3604 | if (rn->rfd == 0xfff) | |
3605 | { | |
3606 | result++; | |
3607 | rf = AUX_GET_ISYM (bigend, ax + 1); | |
3608 | } | |
3609 | else | |
3610 | { | |
3611 | rf = rn->rfd; | |
3612 | } | |
3613 | ||
3614 | /* mips cc uses a rf of -1 for opaque struct definitions. | |
dcdba37e | 3615 | Set TYPE_FLAG_STUB for these types so that check_typedef will |
a2f1e2e5 ILT |
3616 | resolve them if the struct gets defined in another compilation unit. */ |
3617 | if (rf == -1) | |
3618 | { | |
3619 | *pname = "<undefined>"; | |
3620 | *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
3621 | TYPE_FLAGS (*tpp) |= TYPE_FLAG_STUB; | |
3622 | return result; | |
3623 | } | |
3624 | ||
3625 | /* mips cc uses an escaped rn->index of 0 for struct return types | |
3626 | of procedures that were compiled without -g. These will always remain | |
3627 | undefined. */ | |
3628 | if (rn->rfd == 0xfff && rn->index == 0) | |
3629 | { | |
3630 | *pname = "<undefined>"; | |
3631 | return result; | |
3632 | } | |
3633 | ||
3634 | /* Find the relative file descriptor and the symbol in it. */ | |
3635 | fh = get_rfd (fd, rf); | |
3636 | xref_fd = fh - debug_info->fdr; | |
3637 | ||
3638 | if (rn->index >= fh->csym) | |
3639 | { | |
3640 | /* File indirect entry is corrupt. */ | |
3641 | *pname = "<illegal>"; | |
3642 | complain (&bad_rfd_entry_complaint, | |
3643 | sym_name, xref_fd, rn->index); | |
3644 | return result; | |
3645 | } | |
3646 | ||
3647 | /* If we have processed this symbol then we left a forwarding | |
3648 | pointer to the type in the pending list. If not, we`ll put | |
3649 | it in a list of pending types, to be processed later when | |
3650 | the file will be. In any event, we collect the name for the | |
3651 | type here. */ | |
3652 | ||
3653 | esh = ((char *) debug_info->external_sym | |
3654 | + ((fh->isymBase + rn->index) | |
3655 | * debug_swap->external_sym_size)); | |
3656 | (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh); | |
3657 | ||
3658 | /* Make sure that this type of cross reference can be handled. */ | |
10373914 | 3659 | if ((sh.sc != scInfo |
33c66e44 | 3660 | || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect |
10373914 PS |
3661 | && sh.st != stStruct && sh.st != stUnion |
3662 | && sh.st != stEnum)) | |
54d478cd | 3663 | && (sh.st != stBlock || (sh.sc != scCommon && sh.sc != scSCommon))) |
a2f1e2e5 ILT |
3664 | { |
3665 | /* File indirect entry is corrupt. */ | |
3666 | *pname = "<illegal>"; | |
3667 | complain (&bad_rfd_entry_complaint, | |
3668 | sym_name, xref_fd, rn->index); | |
3669 | return result; | |
3670 | } | |
3671 | ||
3672 | *pname = debug_info->ss + fh->issBase + sh.iss; | |
3673 | ||
3674 | pend = is_pending_symbol (fh, esh); | |
3675 | if (pend) | |
3676 | *tpp = pend->t; | |
3677 | else | |
3678 | { | |
3679 | /* We have not yet seen this type. */ | |
3680 | ||
33c66e44 | 3681 | if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect) |
a2f1e2e5 ILT |
3682 | { |
3683 | TIR tir; | |
3684 | ||
3685 | /* alpha cc puts out a stTypedef with a sh.iss of zero for | |
3686 | two cases: | |
3687 | a) forward declarations of structs/unions/enums which are not | |
3688 | defined in this compilation unit. | |
3689 | For these the type will be void. This is a bad design decision | |
3690 | as cross referencing across compilation units is impossible | |
3691 | due to the missing name. | |
080868b4 PS |
3692 | b) forward declarations of structs/unions/enums/typedefs which |
3693 | are defined later in this file or in another file in the same | |
3694 | compilation unit. Irix5 cc uses a stIndirect symbol for this. | |
33c66e44 | 3695 | Simply cross reference those again to get the true type. |
a2f1e2e5 ILT |
3696 | The forward references are not entered in the pending list and |
3697 | in the symbol table. */ | |
3698 | ||
6187dfac ILT |
3699 | (*debug_swap->swap_tir_in) (bigend, |
3700 | &(debug_info->external_aux | |
3701 | + fh->iauxBase + sh.index)->a_ti, | |
3702 | &tir); | |
a2f1e2e5 ILT |
3703 | if (tir.tq0 != tqNil) |
3704 | complain (&illegal_forward_tq0_complaint, sym_name); | |
3705 | switch (tir.bt) | |
3706 | { | |
3707 | case btVoid: | |
3708 | *tpp = init_type (type_code, 0, 0, (char *) NULL, | |
3709 | current_objfile); | |
3710 | *pname = "<undefined>"; | |
3711 | break; | |
3712 | ||
3713 | case btStruct: | |
3714 | case btUnion: | |
3715 | case btEnum: | |
3716 | cross_ref (xref_fd, | |
3717 | (debug_info->external_aux | |
3718 | + fh->iauxBase + sh.index + 1), | |
3719 | tpp, type_code, pname, | |
3720 | fh->fBigendian, sym_name); | |
3721 | break; | |
3722 | ||
080868b4 PS |
3723 | case btTypedef: |
3724 | /* Follow a forward typedef. This might recursively | |
3725 | call cross_ref till we get a non typedef'ed type. | |
3726 | FIXME: This is not correct behaviour, but gdb currently | |
3727 | cannot handle typedefs without type copying. Type | |
3728 | copying is impossible as we might have mutual forward | |
3729 | references between two files and the copied type would not | |
3730 | get filled in when we later parse its definition. */ | |
3731 | *tpp = parse_type (xref_fd, | |
3732 | debug_info->external_aux + fh->iauxBase, | |
3733 | sh.index, | |
3734 | (int *)NULL, | |
3735 | fh->fBigendian, | |
3736 | debug_info->ss + fh->issBase + sh.iss); | |
3737 | add_pending (fh, esh, *tpp); | |
3738 | break; | |
3739 | ||
a2f1e2e5 ILT |
3740 | default: |
3741 | complain (&illegal_forward_bt_complaint, tir.bt, sym_name); | |
3742 | *tpp = init_type (type_code, 0, 0, (char *) NULL, | |
3743 | current_objfile); | |
3744 | break; | |
3745 | } | |
3746 | return result; | |
3747 | } | |
3748 | else if (sh.st == stTypedef) | |
3749 | { | |
3750 | /* Parse the type for a normal typedef. This might recursively call | |
3751 | cross_ref till we get a non typedef'ed type. | |
3752 | FIXME: This is not correct behaviour, but gdb currently | |
3753 | cannot handle typedefs without type copying. But type copying is | |
3754 | impossible as we might have mutual forward references between | |
3755 | two files and the copied type would not get filled in when | |
3756 | we later parse its definition. */ | |
3757 | *tpp = parse_type (xref_fd, | |
3758 | debug_info->external_aux + fh->iauxBase, | |
3759 | sh.index, | |
3760 | (int *)NULL, | |
3761 | fh->fBigendian, | |
3762 | debug_info->ss + fh->issBase + sh.iss); | |
3763 | } | |
3764 | else | |
3765 | { | |
3766 | /* Cross reference to a struct/union/enum which is defined | |
3767 | in another file in the same compilation unit but that file | |
3768 | has not been parsed yet. | |
3769 | Initialize the type only, it will be filled in when | |
3770 | it's definition is parsed. */ | |
3771 | *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
3772 | } | |
3773 | add_pending (fh, esh, *tpp); | |
3774 | } | |
3775 | ||
3776 | /* We used one auxent normally, two if we got a "next one" rf. */ | |
3777 | return result; | |
3778 | } | |
3779 | ||
3780 | ||
3781 | /* Quick&dirty lookup procedure, to avoid the MI ones that require | |
3782 | keeping the symtab sorted */ | |
3783 | ||
3784 | static struct symbol * | |
3785 | mylookup_symbol (name, block, namespace, class) | |
3786 | char *name; | |
3787 | register struct block *block; | |
1750a5ef | 3788 | namespace_enum namespace; |
a2f1e2e5 ILT |
3789 | enum address_class class; |
3790 | { | |
3791 | register int bot, top, inc; | |
3792 | register struct symbol *sym; | |
3793 | ||
3794 | bot = 0; | |
3795 | top = BLOCK_NSYMS (block); | |
3796 | inc = name[0]; | |
3797 | while (bot < top) | |
3798 | { | |
3799 | sym = BLOCK_SYM (block, bot); | |
3800 | if (SYMBOL_NAME (sym)[0] == inc | |
3801 | && SYMBOL_NAMESPACE (sym) == namespace | |
3802 | && SYMBOL_CLASS (sym) == class | |
3803 | && strcmp (SYMBOL_NAME (sym), name) == 0) | |
3804 | return sym; | |
3805 | bot++; | |
3806 | } | |
3807 | block = BLOCK_SUPERBLOCK (block); | |
3808 | if (block) | |
3809 | return mylookup_symbol (name, block, namespace, class); | |
3810 | return 0; | |
3811 | } | |
3812 | ||
3813 | ||
3814 | /* Add a new symbol S to a block B. | |
3815 | Infrequently, we will need to reallocate the block to make it bigger. | |
3816 | We only detect this case when adding to top_stack->cur_block, since | |
3817 | that's the only time we know how big the block is. FIXME. */ | |
3818 | ||
3819 | static void | |
3820 | add_symbol (s, b) | |
3821 | struct symbol *s; | |
3822 | struct block *b; | |
3823 | { | |
3824 | int nsyms = BLOCK_NSYMS (b)++; | |
3825 | struct block *origb; | |
3826 | struct parse_stack *stackp; | |
3827 | ||
3828 | if (b == top_stack->cur_block && | |
3829 | nsyms >= top_stack->maxsyms) | |
3830 | { | |
3831 | complain (&block_overflow_complaint, SYMBOL_NAME (s)); | |
3832 | /* In this case shrink_block is actually grow_block, since | |
3833 | BLOCK_NSYMS(b) is larger than its current size. */ | |
3834 | origb = b; | |
3835 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); | |
3836 | ||
3837 | /* Now run through the stack replacing pointers to the | |
3838 | original block. shrink_block has already done this | |
3839 | for the blockvector and BLOCK_FUNCTION. */ | |
3840 | for (stackp = top_stack; stackp; stackp = stackp->next) | |
3841 | { | |
3842 | if (stackp->cur_block == origb) | |
3843 | { | |
3844 | stackp->cur_block = b; | |
3845 | stackp->maxsyms = BLOCK_NSYMS (b); | |
3846 | } | |
3847 | } | |
3848 | } | |
3849 | BLOCK_SYM (b, nsyms) = s; | |
3850 | } | |
3851 | ||
3852 | /* Add a new block B to a symtab S */ | |
3853 | ||
3854 | static void | |
3855 | add_block (b, s) | |
3856 | struct block *b; | |
3857 | struct symtab *s; | |
3858 | { | |
3859 | struct blockvector *bv = BLOCKVECTOR (s); | |
3860 | ||
3861 | bv = (struct blockvector *) xrealloc ((PTR) bv, | |
3862 | (sizeof (struct blockvector) | |
3863 | + BLOCKVECTOR_NBLOCKS (bv) | |
3864 | * sizeof (bv->block))); | |
3865 | if (bv != BLOCKVECTOR (s)) | |
3866 | BLOCKVECTOR (s) = bv; | |
3867 | ||
3868 | BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b; | |
3869 | } | |
3870 | ||
3871 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. | |
3872 | MIPS' linenumber encoding might need more than one byte | |
3873 | to describe it, LAST is used to detect these continuation lines. | |
3874 | ||
3875 | Combining lines with the same line number seems like a bad idea. | |
3876 | E.g: There could be a line number entry with the same line number after the | |
3877 | prologue and GDB should not ignore it (this is a better way to find | |
3878 | a prologue than mips_skip_prologue). | |
3879 | But due to the compressed line table format there are line number entries | |
3880 | for the same line which are needed to bridge the gap to the next | |
3881 | line number entry. These entries have a bogus address info with them | |
3882 | and we are unable to tell them from intended duplicate line number | |
3883 | entries. | |
3884 | This is another reason why -ggdb debugging format is preferable. */ | |
3885 | ||
3886 | static int | |
3887 | add_line (lt, lineno, adr, last) | |
3888 | struct linetable *lt; | |
3889 | int lineno; | |
3890 | CORE_ADDR adr; | |
3891 | int last; | |
3892 | { | |
9d51b3c5 PS |
3893 | /* DEC c89 sometimes produces zero linenos which confuse gdb. |
3894 | Change them to something sensible. */ | |
3895 | if (lineno == 0) | |
3896 | lineno = 1; | |
a2f1e2e5 ILT |
3897 | if (last == 0) |
3898 | last = -2; /* make sure we record first line */ | |
3899 | ||
3900 | if (last == lineno) /* skip continuation lines */ | |
3901 | return lineno; | |
3902 | ||
3903 | lt->item[lt->nitems].line = lineno; | |
3904 | lt->item[lt->nitems++].pc = adr << 2; | |
3905 | return lineno; | |
3906 | } | |
3907 | \f | |
3908 | /* Sorting and reordering procedures */ | |
3909 | ||
3910 | /* Blocks with a smaller low bound should come first */ | |
3911 | ||
3912 | static int | |
3913 | compare_blocks (arg1, arg2) | |
3914 | const PTR arg1; | |
3915 | const PTR arg2; | |
3916 | { | |
3917 | register int addr_diff; | |
3918 | struct block **b1 = (struct block **) arg1; | |
3919 | struct block **b2 = (struct block **) arg2; | |
3920 | ||
3921 | addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2))); | |
3922 | if (addr_diff == 0) | |
3923 | return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1))); | |
3924 | return addr_diff; | |
3925 | } | |
3926 | ||
3927 | /* Sort the blocks of a symtab S. | |
3928 | Reorder the blocks in the blockvector by code-address, | |
3929 | as required by some MI search routines */ | |
3930 | ||
3931 | static void | |
3932 | sort_blocks (s) | |
3933 | struct symtab *s; | |
3934 | { | |
3935 | struct blockvector *bv = BLOCKVECTOR (s); | |
3936 | ||
3937 | if (BLOCKVECTOR_NBLOCKS (bv) <= 2) | |
3938 | { | |
3939 | /* Cosmetic */ | |
3940 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0) | |
3941 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0; | |
3942 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0) | |
3943 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0; | |
3944 | return; | |
3945 | } | |
3946 | /* | |
3947 | * This is very unfortunate: normally all functions are compiled in | |
3948 | * the order they are found, but if the file is compiled -O3 things | |
3949 | * are very different. It would be nice to find a reliable test | |
3950 | * to detect -O3 images in advance. | |
3951 | */ | |
3952 | if (BLOCKVECTOR_NBLOCKS (bv) > 3) | |
3953 | qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK), | |
3954 | BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK, | |
3955 | sizeof (struct block *), | |
3956 | compare_blocks); | |
3957 | ||
3958 | { | |
3959 | register CORE_ADDR high = 0; | |
3960 | register int i, j = BLOCKVECTOR_NBLOCKS (bv); | |
3961 | ||
3962 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) | |
3963 | if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i))) | |
3964 | high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)); | |
3965 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high; | |
3966 | } | |
3967 | ||
3968 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = | |
3969 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK)); | |
3970 | ||
3971 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
3972 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3973 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
3974 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
3975 | } | |
3976 | \f | |
3977 | ||
3978 | /* Constructor/restructor/destructor procedures */ | |
3979 | ||
3980 | /* Allocate a new symtab for NAME. Needs an estimate of how many symbols | |
3981 | MAXSYMS and linenumbers MAXLINES we'll put in it */ | |
3982 | ||
3983 | static struct symtab * | |
3984 | new_symtab (name, maxsyms, maxlines, objfile) | |
3985 | char *name; | |
3986 | int maxsyms; | |
3987 | int maxlines; | |
3988 | struct objfile *objfile; | |
3989 | { | |
3990 | struct symtab *s = allocate_symtab (name, objfile); | |
3991 | ||
3992 | LINETABLE (s) = new_linetable (maxlines); | |
3993 | ||
3994 | /* All symtabs must have at least two blocks */ | |
3995 | BLOCKVECTOR (s) = new_bvect (2); | |
3996 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms); | |
3997 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms); | |
3998 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) = | |
3999 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
4000 | ||
4001 | s->free_code = free_linetable; | |
4002 | ||
4003 | return (s); | |
4004 | } | |
4005 | ||
4006 | /* Allocate a new partial_symtab NAME */ | |
4007 | ||
4008 | static struct partial_symtab * | |
847d9775 | 4009 | new_psymtab (name, objfile, section_offsets) |
a2f1e2e5 ILT |
4010 | char *name; |
4011 | struct objfile *objfile; | |
847d9775 | 4012 | struct section_offsets *section_offsets; |
a2f1e2e5 ILT |
4013 | { |
4014 | struct partial_symtab *psymtab; | |
4015 | ||
4016 | psymtab = allocate_psymtab (name, objfile); | |
847d9775 | 4017 | psymtab->section_offsets = section_offsets; |
a2f1e2e5 ILT |
4018 | |
4019 | /* Keep a backpointer to the file's symbols */ | |
4020 | ||
4021 | psymtab->read_symtab_private = ((char *) | |
4022 | obstack_alloc (&objfile->psymbol_obstack, | |
4023 | sizeof (struct symloc))); | |
4024 | memset ((PTR) psymtab->read_symtab_private, 0, sizeof (struct symloc)); | |
4025 | CUR_BFD (psymtab) = cur_bfd; | |
4026 | DEBUG_SWAP (psymtab) = debug_swap; | |
4027 | DEBUG_INFO (psymtab) = debug_info; | |
4028 | PENDING_LIST (psymtab) = pending_list; | |
4029 | ||
4030 | /* The way to turn this into a symtab is to call... */ | |
4031 | psymtab->read_symtab = mdebug_psymtab_to_symtab; | |
4032 | return (psymtab); | |
4033 | } | |
4034 | ||
4035 | ||
4036 | /* Allocate a linetable array of the given SIZE. Since the struct | |
4037 | already includes one item, we subtract one when calculating the | |
4038 | proper size to allocate. */ | |
4039 | ||
4040 | static struct linetable * | |
4041 | new_linetable (size) | |
4042 | int size; | |
4043 | { | |
4044 | struct linetable *l; | |
4045 | ||
4046 | size = (size - 1) * sizeof (l->item) + sizeof (struct linetable); | |
4047 | l = (struct linetable *) xmalloc (size); | |
4048 | l->nitems = 0; | |
4049 | return l; | |
4050 | } | |
4051 | ||
4052 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, | |
4053 | I am not so sure about the 3.4 ones. | |
4054 | ||
4055 | Since the struct linetable already includes one item, we subtract one when | |
4056 | calculating the proper size to allocate. */ | |
4057 | ||
4058 | static struct linetable * | |
4059 | shrink_linetable (lt) | |
4060 | struct linetable *lt; | |
4061 | { | |
4062 | ||
4063 | return (struct linetable *) xrealloc ((PTR) lt, | |
4064 | (sizeof (struct linetable) | |
4065 | + ((lt->nitems - 1) | |
4066 | * sizeof (lt->item)))); | |
4067 | } | |
4068 | ||
4069 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ | |
4070 | ||
4071 | static struct blockvector * | |
4072 | new_bvect (nblocks) | |
4073 | int nblocks; | |
4074 | { | |
4075 | struct blockvector *bv; | |
4076 | int size; | |
4077 | ||
4078 | size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); | |
4079 | bv = (struct blockvector *) xzalloc (size); | |
4080 | ||
4081 | BLOCKVECTOR_NBLOCKS (bv) = nblocks; | |
4082 | ||
4083 | return bv; | |
4084 | } | |
4085 | ||
4086 | /* Allocate and zero a new block of MAXSYMS symbols */ | |
4087 | ||
4088 | static struct block * | |
4089 | new_block (maxsyms) | |
4090 | int maxsyms; | |
4091 | { | |
4092 | int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *); | |
4093 | ||
4094 | return (struct block *) xzalloc (size); | |
4095 | } | |
4096 | ||
4097 | /* Ooops, too big. Shrink block B in symtab S to its minimal size. | |
4098 | Shrink_block can also be used by add_symbol to grow a block. */ | |
4099 | ||
4100 | static struct block * | |
4101 | shrink_block (b, s) | |
4102 | struct block *b; | |
4103 | struct symtab *s; | |
4104 | { | |
4105 | struct block *new; | |
4106 | struct blockvector *bv = BLOCKVECTOR (s); | |
4107 | int i; | |
4108 | ||
4109 | /* Just reallocate it and fix references to the old one */ | |
4110 | ||
4111 | new = (struct block *) xrealloc ((PTR) b, | |
4112 | (sizeof (struct block) | |
4113 | + ((BLOCK_NSYMS (b) - 1) | |
4114 | * sizeof (struct symbol *)))); | |
4115 | ||
4116 | /* Should chase pointers to old one. Fortunately, that`s just | |
4117 | the block`s function and inferior blocks */ | |
4118 | if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b) | |
4119 | SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new; | |
4120 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
4121 | if (BLOCKVECTOR_BLOCK (bv, i) == b) | |
4122 | BLOCKVECTOR_BLOCK (bv, i) = new; | |
4123 | else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b) | |
4124 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new; | |
4125 | return new; | |
4126 | } | |
4127 | ||
4128 | /* Create a new symbol with printname NAME */ | |
4129 | ||
4130 | static struct symbol * | |
4131 | new_symbol (name) | |
4132 | char *name; | |
4133 | { | |
4134 | struct symbol *s = ((struct symbol *) | |
4135 | obstack_alloc (¤t_objfile->symbol_obstack, | |
4136 | sizeof (struct symbol))); | |
4137 | ||
4138 | memset ((PTR) s, 0, sizeof (*s)); | |
ace4b8d7 FF |
4139 | SYMBOL_NAME (s) = obsavestring (name, strlen (name), |
4140 | ¤t_objfile->symbol_obstack); | |
a2f1e2e5 ILT |
4141 | SYMBOL_LANGUAGE (s) = psymtab_language; |
4142 | SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack); | |
4143 | return s; | |
4144 | } | |
4145 | ||
4146 | /* Create a new type with printname NAME */ | |
4147 | ||
4148 | static struct type * | |
4149 | new_type (name) | |
4150 | char *name; | |
4151 | { | |
4152 | struct type *t; | |
4153 | ||
4154 | t = alloc_type (current_objfile); | |
4155 | TYPE_NAME (t) = name; | |
4156 | TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default; | |
4157 | return t; | |
4158 | } | |
4159 | \f | |
4160 | /* Read ECOFF debugging information from a BFD section. This is | |
4161 | called from elfread.c. It parses the section into a | |
4162 | ecoff_debug_info struct, and then lets the rest of the file handle | |
4163 | it as normal. */ | |
4164 | ||
4165 | void | |
4166 | elfmdebug_build_psymtabs (objfile, swap, sec, section_offsets) | |
4167 | struct objfile *objfile; | |
4168 | const struct ecoff_debug_swap *swap; | |
4169 | asection *sec; | |
4170 | struct section_offsets *section_offsets; | |
4171 | { | |
4172 | bfd *abfd = objfile->obfd; | |
a2f1e2e5 ILT |
4173 | struct ecoff_debug_info *info; |
4174 | ||
a2f1e2e5 ILT |
4175 | info = ((struct ecoff_debug_info *) |
4176 | obstack_alloc (&objfile->psymbol_obstack, | |
4177 | sizeof (struct ecoff_debug_info))); | |
4178 | ||
6187dfac ILT |
4179 | if (!(*swap->read_debug_info) (abfd, sec, info)) |
4180 | error ("Error reading ECOFF debugging information: %s", | |
4181 | bfd_errmsg (bfd_get_error ())); | |
a2f1e2e5 ILT |
4182 | |
4183 | mdebug_build_psymtabs (objfile, swap, info, section_offsets); | |
4184 | } | |
4185 | \f | |
4186 | ||
4187 | /* Things used for calling functions in the inferior. | |
4188 | These functions are exported to our companion | |
4189 | mips-tdep.c file and are here because they play | |
4190 | with the symbol-table explicitly. */ | |
4191 | ||
4192 | /* Sigtramp: make sure we have all the necessary information | |
4193 | about the signal trampoline code. Since the official code | |
4194 | from MIPS does not do so, we make up that information ourselves. | |
4195 | If they fix the library (unlikely) this code will neutralize itself. */ | |
4196 | ||
4197 | /* FIXME: This function is called only by mips-tdep.c. It needs to be | |
4198 | here because it calls functions defined in this file, but perhaps | |
8efb8079 FF |
4199 | this could be handled in a better way. Only compile it in when |
4200 | tm-mips.h is included. */ | |
4201 | ||
4202 | #ifdef TM_MIPS_H | |
a2f1e2e5 ILT |
4203 | |
4204 | void | |
4205 | fixup_sigtramp () | |
4206 | { | |
4207 | struct symbol *s; | |
4208 | struct symtab *st; | |
4209 | struct block *b, *b0 = NULL; | |
4210 | ||
4211 | sigtramp_address = -1; | |
4212 | ||
4213 | /* We have to handle the following cases here: | |
4214 | a) The Mips library has a sigtramp label within sigvec. | |
4215 | b) Irix has a _sigtramp which we want to use, but it also has sigvec. */ | |
4216 | s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL); | |
4217 | if (s != 0) | |
4218 | { | |
4219 | b0 = SYMBOL_BLOCK_VALUE (s); | |
4220 | s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL); | |
4221 | } | |
4222 | if (s == 0) | |
4223 | { | |
4224 | /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */ | |
4225 | s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL); | |
4226 | } | |
4227 | ||
4228 | /* But maybe this program uses its own version of sigvec */ | |
4229 | if (s == 0) | |
4230 | return; | |
4231 | ||
4232 | /* Did we or MIPSco fix the library ? */ | |
4233 | if (SYMBOL_CLASS (s) == LOC_BLOCK) | |
4234 | { | |
4235 | sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s)); | |
4236 | sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s)); | |
4237 | return; | |
4238 | } | |
4239 | ||
4240 | sigtramp_address = SYMBOL_VALUE (s); | |
4241 | sigtramp_end = sigtramp_address + 0x88; /* black magic */ | |
4242 | ||
4243 | /* But what symtab does it live in ? */ | |
4244 | st = find_pc_symtab (SYMBOL_VALUE (s)); | |
4245 | ||
4246 | /* | |
4247 | * Ok, there goes the fix: turn it into a procedure, with all the | |
4248 | * needed info. Note we make it a nested procedure of sigvec, | |
4249 | * which is the way the (assembly) code is actually written. | |
4250 | */ | |
4251 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
4252 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
4253 | SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL, | |
4254 | st->objfile); | |
bbcc95bd | 4255 | TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = mdebug_type_void; |
a2f1e2e5 ILT |
4256 | |
4257 | /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */ | |
4258 | b = new_block (1); | |
4259 | SYMBOL_BLOCK_VALUE (s) = b; | |
4260 | BLOCK_START (b) = sigtramp_address; | |
4261 | BLOCK_END (b) = sigtramp_end; | |
4262 | BLOCK_FUNCTION (b) = s; | |
4263 | BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0); | |
4264 | add_block (b, st); | |
4265 | sort_blocks (st); | |
4266 | ||
4267 | /* Make a MIPS_EFI_SYMBOL_NAME entry for it */ | |
4268 | { | |
4269 | struct mips_extra_func_info *e = | |
4270 | ((struct mips_extra_func_info *) | |
4271 | xzalloc (sizeof (struct mips_extra_func_info))); | |
4272 | ||
4273 | e->numargs = 0; /* the kernel thinks otherwise */ | |
0434c1a0 | 4274 | e->pdr.frameoffset = 32; |
a2f1e2e5 | 4275 | e->pdr.framereg = SP_REGNUM; |
0434c1a0 PS |
4276 | /* Note that setting pcreg is no longer strictly necessary as |
4277 | mips_frame_saved_pc is now aware of signal handler frames. */ | |
a2f1e2e5 ILT |
4278 | e->pdr.pcreg = PC_REGNUM; |
4279 | e->pdr.regmask = -2; | |
0434c1a0 PS |
4280 | /* Offset to saved r31, in the sigtramp case the saved registers |
4281 | are above the frame in the sigcontext. | |
4282 | We have 4 alignment bytes, 12 bytes for onstack, mask and pc, | |
4283 | 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp | |
4284 | and 32 * 4 bytes for the floating point registers. */ | |
4285 | e->pdr.regoffset = 4 + 12 + 31 * 4; | |
a2f1e2e5 | 4286 | e->pdr.fregmask = -1; |
0434c1a0 PS |
4287 | /* Offset to saved f30 (first saved *double* register). */ |
4288 | e->pdr.fregoffset = 4 + 12 + 32 * 4 + 12 + 30 * 4; | |
a2f1e2e5 ILT |
4289 | e->pdr.isym = (long) s; |
4290 | e->pdr.adr = sigtramp_address; | |
4291 | ||
4292 | current_objfile = st->objfile; /* Keep new_symbol happy */ | |
4293 | s = new_symbol (MIPS_EFI_SYMBOL_NAME); | |
4294 | SYMBOL_VALUE (s) = (long) e; | |
4295 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; | |
4296 | SYMBOL_CLASS (s) = LOC_CONST; | |
bbcc95bd | 4297 | SYMBOL_TYPE (s) = mdebug_type_void; |
a2f1e2e5 ILT |
4298 | current_objfile = NULL; |
4299 | } | |
4300 | ||
4301 | BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s; | |
4302 | } | |
4303 | ||
8efb8079 FF |
4304 | #endif /* TM_MIPS_H */ |
4305 | ||
a2f1e2e5 ILT |
4306 | void |
4307 | _initialize_mdebugread () | |
4308 | { | |
bbcc95bd PS |
4309 | mdebug_type_void = |
4310 | init_type (TYPE_CODE_VOID, 1, | |
4311 | 0, | |
4312 | "void", (struct objfile *) NULL); | |
4313 | mdebug_type_char = | |
4314 | init_type (TYPE_CODE_INT, 1, | |
4315 | 0, | |
4316 | "char", (struct objfile *) NULL); | |
4317 | mdebug_type_unsigned_char = | |
4318 | init_type (TYPE_CODE_INT, 1, | |
4319 | TYPE_FLAG_UNSIGNED, | |
4320 | "unsigned char", (struct objfile *) NULL); | |
4321 | mdebug_type_short = | |
4322 | init_type (TYPE_CODE_INT, 2, | |
4323 | 0, | |
4324 | "short", (struct objfile *) NULL); | |
4325 | mdebug_type_unsigned_short = | |
4326 | init_type (TYPE_CODE_INT, 2, | |
4327 | TYPE_FLAG_UNSIGNED, | |
4328 | "unsigned short", (struct objfile *) NULL); | |
4329 | mdebug_type_int_32 = | |
4330 | init_type (TYPE_CODE_INT, 4, | |
4331 | 0, | |
4332 | "int", (struct objfile *) NULL); | |
4333 | mdebug_type_unsigned_int_32 = | |
4334 | init_type (TYPE_CODE_INT, 4, | |
4335 | TYPE_FLAG_UNSIGNED, | |
4336 | "unsigned int", (struct objfile *) NULL); | |
4337 | mdebug_type_int_64 = | |
4338 | init_type (TYPE_CODE_INT, 8, | |
4339 | 0, | |
4340 | "int", (struct objfile *) NULL); | |
4341 | mdebug_type_unsigned_int_64 = | |
4342 | init_type (TYPE_CODE_INT, 8, | |
4343 | TYPE_FLAG_UNSIGNED, | |
4344 | "unsigned int", (struct objfile *) NULL); | |
4345 | mdebug_type_long_32 = | |
4346 | init_type (TYPE_CODE_INT, 4, | |
4347 | 0, | |
4348 | "long", (struct objfile *) NULL); | |
4349 | mdebug_type_unsigned_long_32 = | |
4350 | init_type (TYPE_CODE_INT, 4, | |
4351 | TYPE_FLAG_UNSIGNED, | |
4352 | "unsigned long", (struct objfile *) NULL); | |
4353 | mdebug_type_long_64 = | |
4354 | init_type (TYPE_CODE_INT, 8, | |
4355 | 0, | |
4356 | "long", (struct objfile *) NULL); | |
4357 | mdebug_type_unsigned_long_64 = | |
4358 | init_type (TYPE_CODE_INT, 8, | |
4359 | TYPE_FLAG_UNSIGNED, | |
4360 | "unsigned long", (struct objfile *) NULL); | |
4361 | mdebug_type_long_long_64 = | |
4362 | init_type (TYPE_CODE_INT, 8, | |
4363 | 0, | |
4364 | "long long", (struct objfile *) NULL); | |
4365 | mdebug_type_unsigned_long_long_64 = | |
4366 | init_type (TYPE_CODE_INT, 8, | |
4367 | TYPE_FLAG_UNSIGNED, | |
4368 | "unsigned long long", (struct objfile *) NULL); | |
4369 | mdebug_type_adr_32 = | |
4370 | init_type (TYPE_CODE_PTR, 4, | |
4371 | TYPE_FLAG_UNSIGNED, | |
4372 | "adr_32", (struct objfile *) NULL); | |
4373 | TYPE_TARGET_TYPE (mdebug_type_adr_32) = mdebug_type_void; | |
4374 | mdebug_type_adr_64 = | |
4375 | init_type (TYPE_CODE_PTR, 8, | |
4376 | TYPE_FLAG_UNSIGNED, | |
4377 | "adr_64", (struct objfile *) NULL); | |
4378 | TYPE_TARGET_TYPE (mdebug_type_adr_64) = mdebug_type_void; | |
4379 | mdebug_type_float = | |
4380 | init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
4381 | 0, | |
4382 | "float", (struct objfile *) NULL); | |
4383 | mdebug_type_double = | |
4384 | init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
4385 | 0, | |
4386 | "double", (struct objfile *) NULL); | |
4387 | mdebug_type_complex = | |
4388 | init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
4389 | 0, | |
4390 | "complex", (struct objfile *) NULL); | |
4391 | TYPE_TARGET_TYPE (mdebug_type_complex) = mdebug_type_float; | |
4392 | mdebug_type_double_complex = | |
4393 | init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
4394 | 0, | |
4395 | "double complex", (struct objfile *) NULL); | |
4396 | TYPE_TARGET_TYPE (mdebug_type_double_complex) = mdebug_type_double; | |
a2f1e2e5 | 4397 | |
504ccfd7 JK |
4398 | /* Is a "string" the way btString means it the same as TYPE_CODE_STRING? |
4399 | FIXME. */ | |
4400 | mdebug_type_string = | |
a2f1e2e5 ILT |
4401 | init_type (TYPE_CODE_STRING, |
4402 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
4403 | 0, "string", | |
4404 | (struct objfile *) NULL); | |
504ccfd7 | 4405 | |
504ccfd7 JK |
4406 | /* We use TYPE_CODE_INT to print these as integers. Does this do any |
4407 | good? Would we be better off with TYPE_CODE_ERROR? Should | |
4408 | TYPE_CODE_ERROR print things in hex if it knows the size? */ | |
4409 | mdebug_type_fixed_dec = | |
a2f1e2e5 ILT |
4410 | init_type (TYPE_CODE_INT, |
4411 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
4412 | 0, "fixed decimal", | |
4413 | (struct objfile *) NULL); | |
504ccfd7 JK |
4414 | |
4415 | mdebug_type_float_dec = | |
4416 | init_type (TYPE_CODE_ERROR, | |
a2f1e2e5 ILT |
4417 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, |
4418 | 0, "floating decimal", | |
4419 | (struct objfile *) NULL); | |
41270571 PS |
4420 | |
4421 | nodebug_func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0, | |
4422 | "<function, no debug info>", NULL); | |
bbcc95bd | 4423 | TYPE_TARGET_TYPE (nodebug_func_symbol_type) = mdebug_type_int; |
41270571 PS |
4424 | nodebug_var_symbol_type = |
4425 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
4426 | "<variable, no debug info>", NULL); | |
a2f1e2e5 | 4427 | } |