Commit | Line | Data |
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c906108c | 1 | /* Read a symbol table in ECOFF format (Third-Eye). |
b6ba6518 | 2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
d7f0b9ce | 3 | 1997, 1998, 1999, 2000, 2001, 2002 |
c906108c SS |
4 | Free Software Foundation, Inc. |
5 | Original version contributed by Alessandro Forin (af@cs.cmu.edu) at | |
6 | CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor | |
7 | at Cygnus Support. | |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b JM |
21 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
25 | |
26 | /* This module provides the function mdebug_build_psymtabs. It reads | |
27 | ECOFF debugging information into partial symbol tables. The | |
28 | debugging information is read from two structures. A struct | |
29 | ecoff_debug_swap includes the sizes of each ECOFF structure and | |
30 | swapping routines; these are fixed for a particular target. A | |
31 | struct ecoff_debug_info points to the debugging information for a | |
32 | particular object file. | |
33 | ||
34 | ECOFF symbol tables are mostly written in the byte order of the | |
35 | target machine. However, one section of the table (the auxiliary | |
36 | symbol information) is written in the host byte order. There is a | |
37 | bit in the other symbol info which describes which host byte order | |
38 | was used. ECOFF thereby takes the trophy from Intel `b.out' for | |
39 | the most brain-dead adaptation of a file format to byte order. | |
40 | ||
41 | This module can read all four of the known byte-order combinations, | |
42 | on any type of host. */ | |
43 | ||
44 | #include "defs.h" | |
45 | #include "symtab.h" | |
46 | #include "gdbtypes.h" | |
47 | #include "gdbcore.h" | |
48 | #include "symfile.h" | |
49 | #include "objfiles.h" | |
50 | #include "obstack.h" | |
51 | #include "buildsym.h" | |
52 | #include "stabsread.h" | |
53 | #include "complaints.h" | |
54 | #include "demangle.h" | |
55 | ||
56 | /* These are needed if the tm.h file does not contain the necessary | |
57 | mips specific definitions. */ | |
58 | ||
59 | #ifndef MIPS_EFI_SYMBOL_NAME | |
60 | #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__" | |
a14ed312 | 61 | extern void ecoff_relocate_efi (struct symbol *, CORE_ADDR); |
c906108c SS |
62 | #include "coff/sym.h" |
63 | #include "coff/symconst.h" | |
c5aa993b JM |
64 | typedef struct mips_extra_func_info |
65 | { | |
66 | long numargs; | |
67 | PDR pdr; | |
68 | } | |
69 | *mips_extra_func_info_t; | |
c906108c SS |
70 | #ifndef RA_REGNUM |
71 | #define RA_REGNUM 0 | |
72 | #endif | |
73 | #endif | |
74 | ||
75 | #ifdef USG | |
76 | #include <sys/types.h> | |
77 | #endif | |
78 | ||
79 | #include "gdb_stat.h" | |
80 | #include "gdb_string.h" | |
81 | ||
c906108c SS |
82 | #include "bfd.h" |
83 | ||
84 | #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */ | |
85 | ||
86 | #include "libaout.h" /* Private BFD a.out information. */ | |
87 | #include "aout/aout64.h" | |
88 | #include "aout/stab_gnu.h" /* STABS information */ | |
89 | ||
90 | #include "expression.h" | |
d3119d1e | 91 | #include "language.h" /* For local_hex_string() */ |
c906108c | 92 | |
a14ed312 | 93 | extern void _initialize_mdebugread (void); |
c906108c | 94 | |
c906108c SS |
95 | /* Provide a way to test if we have both ECOFF and ELF symbol tables. |
96 | We use this define in order to know whether we should override a | |
97 | symbol's ECOFF section with its ELF section. This is necessary in | |
98 | case the symbol's ELF section could not be represented in ECOFF. */ | |
99 | #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
100 | && bfd_get_section_by_name (bfd, ".mdebug") != NULL) | |
c906108c | 101 | \f |
c5aa993b | 102 | |
c906108c SS |
103 | /* We put a pointer to this structure in the read_symtab_private field |
104 | of the psymtab. */ | |
105 | ||
106 | struct symloc | |
c5aa993b | 107 | { |
3973eadd JB |
108 | /* Our running best guess as to the range of text addresses for |
109 | this psymtab. After we've read everything in, we use this to | |
110 | build pst->text_addrs. */ | |
111 | CORE_ADDR textlow, texthigh; | |
112 | ||
c5aa993b JM |
113 | /* Index of the FDR that this psymtab represents. */ |
114 | int fdr_idx; | |
115 | /* The BFD that the psymtab was created from. */ | |
116 | bfd *cur_bfd; | |
117 | const struct ecoff_debug_swap *debug_swap; | |
118 | struct ecoff_debug_info *debug_info; | |
119 | struct mdebug_pending **pending_list; | |
120 | /* Pointer to external symbols for this file. */ | |
121 | EXTR *extern_tab; | |
122 | /* Size of extern_tab. */ | |
123 | int extern_count; | |
124 | enum language pst_language; | |
125 | }; | |
c906108c SS |
126 | |
127 | #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private) | |
3973eadd JB |
128 | #define TEXTLOW(p) (PST_PRIVATE(p)->textlow) |
129 | #define TEXTHIGH(p) (PST_PRIVATE(p)->texthigh) | |
c906108c SS |
130 | #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx) |
131 | #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd) | |
132 | #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap) | |
133 | #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info) | |
134 | #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list) | |
135 | ||
136 | #define SC_IS_TEXT(sc) ((sc) == scText \ | |
137 | || (sc) == scRConst \ | |
138 | || (sc) == scInit \ | |
139 | || (sc) == scFini) | |
140 | #define SC_IS_DATA(sc) ((sc) == scData \ | |
141 | || (sc) == scSData \ | |
142 | || (sc) == scRData \ | |
143 | || (sc) == scPData \ | |
144 | || (sc) == scXData) | |
145 | #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon) | |
146 | #define SC_IS_BSS(sc) ((sc) == scBss || (sc) == scSBss) | |
147 | #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined) | |
c906108c | 148 | \f |
c906108c SS |
149 | /* Various complaints about symbol reading that don't abort the process */ |
150 | ||
151 | static struct complaint bad_file_number_complaint = | |
152 | {"bad file number %d", 0, 0}; | |
153 | ||
154 | static struct complaint index_complaint = | |
155 | {"bad aux index at symbol %s", 0, 0}; | |
156 | ||
157 | static struct complaint aux_index_complaint = | |
158 | {"bad proc end in aux found from symbol %s", 0, 0}; | |
159 | ||
160 | static struct complaint block_index_complaint = | |
161 | {"bad aux index at block symbol %s", 0, 0}; | |
162 | ||
163 | static struct complaint unknown_ext_complaint = | |
164 | {"unknown external symbol %s", 0, 0}; | |
165 | ||
166 | static struct complaint unknown_sym_complaint = | |
167 | {"unknown local symbol %s", 0, 0}; | |
168 | ||
169 | static struct complaint unknown_st_complaint = | |
170 | {"with type %d", 0, 0}; | |
171 | ||
172 | static struct complaint block_overflow_complaint = | |
173 | {"block containing %s overfilled", 0, 0}; | |
174 | ||
175 | static struct complaint basic_type_complaint = | |
176 | {"cannot map ECOFF basic type 0x%x for %s", 0, 0}; | |
177 | ||
178 | static struct complaint unknown_type_qual_complaint = | |
179 | {"unknown type qualifier 0x%x", 0, 0}; | |
180 | ||
181 | static struct complaint array_index_type_complaint = | |
182 | {"illegal array index type for %s, assuming int", 0, 0}; | |
183 | ||
184 | static struct complaint bad_tag_guess_complaint = | |
185 | {"guessed tag type of %s incorrectly", 0, 0}; | |
186 | ||
187 | static struct complaint block_member_complaint = | |
188 | {"declaration block contains unhandled symbol type %d", 0, 0}; | |
189 | ||
190 | static struct complaint stEnd_complaint = | |
191 | {"stEnd with storage class %d not handled", 0, 0}; | |
192 | ||
193 | static struct complaint unknown_mdebug_symtype_complaint = | |
194 | {"unknown symbol type 0x%x", 0, 0}; | |
195 | ||
196 | static struct complaint stab_unknown_complaint = | |
197 | {"unknown stabs symbol %s", 0, 0}; | |
198 | ||
199 | static struct complaint pdr_for_nonsymbol_complaint = | |
200 | {"PDR for %s, but no symbol", 0, 0}; | |
201 | ||
202 | static struct complaint pdr_static_symbol_complaint = | |
203 | {"can't handle PDR for static proc at 0x%lx", 0, 0}; | |
204 | ||
205 | static struct complaint bad_setjmp_pdr_complaint = | |
206 | {"fixing bad setjmp PDR from libc", 0, 0}; | |
207 | ||
208 | static struct complaint bad_fbitfield_complaint = | |
209 | {"can't handle TIR fBitfield for %s", 0, 0}; | |
210 | ||
211 | static struct complaint bad_continued_complaint = | |
212 | {"illegal TIR continued for %s", 0, 0}; | |
213 | ||
214 | static struct complaint bad_rfd_entry_complaint = | |
215 | {"bad rfd entry for %s: file %d, index %d", 0, 0}; | |
216 | ||
217 | static struct complaint unexpected_type_code_complaint = | |
218 | {"unexpected type code for %s", 0, 0}; | |
219 | ||
220 | static struct complaint unable_to_cross_ref_complaint = | |
221 | {"unable to cross ref btTypedef for %s", 0, 0}; | |
222 | ||
223 | static struct complaint bad_indirect_xref_complaint = | |
224 | {"unable to cross ref btIndirect for %s", 0, 0}; | |
225 | ||
226 | static struct complaint illegal_forward_tq0_complaint = | |
227 | {"illegal tq0 in forward typedef for %s", 0, 0}; | |
228 | ||
229 | static struct complaint illegal_forward_bt_complaint = | |
230 | {"illegal bt %d in forward typedef for %s", 0, 0}; | |
231 | ||
232 | static struct complaint bad_linetable_guess_complaint = | |
233 | {"guessed size of linetable for %s incorrectly", 0, 0}; | |
234 | ||
235 | static struct complaint bad_ext_ifd_complaint = | |
236 | {"bad ifd for external symbol: %d (max %d)", 0, 0}; | |
237 | ||
238 | static struct complaint bad_ext_iss_complaint = | |
239 | {"bad iss for external symbol: %ld (max %ld)", 0, 0}; | |
240 | ||
241 | /* Macros and extra defs */ | |
242 | ||
243 | /* Puns: hard to find whether -g was used and how */ | |
244 | ||
245 | #define MIN_GLEVEL GLEVEL_0 | |
246 | #define compare_glevel(a,b) \ | |
247 | (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \ | |
248 | ((b) == GLEVEL_3) ? -1 : (int)((b) - (a))) | |
249 | \f | |
250 | /* Things that really are local to this module */ | |
251 | ||
252 | /* Remember what we deduced to be the source language of this psymtab. */ | |
253 | ||
254 | static enum language psymtab_language = language_unknown; | |
255 | ||
256 | /* Current BFD. */ | |
257 | ||
258 | static bfd *cur_bfd; | |
259 | ||
260 | /* How to parse debugging information for CUR_BFD. */ | |
261 | ||
262 | static const struct ecoff_debug_swap *debug_swap; | |
263 | ||
264 | /* Pointers to debugging information for CUR_BFD. */ | |
265 | ||
266 | static struct ecoff_debug_info *debug_info; | |
267 | ||
268 | /* Pointer to current file decriptor record, and its index */ | |
269 | ||
270 | static FDR *cur_fdr; | |
271 | static int cur_fd; | |
272 | ||
273 | /* Index of current symbol */ | |
274 | ||
275 | static int cur_sdx; | |
276 | ||
277 | /* Note how much "debuggable" this image is. We would like | |
278 | to see at least one FDR with full symbols */ | |
279 | ||
280 | static int max_gdbinfo; | |
281 | static int max_glevel; | |
282 | ||
283 | /* When examining .o files, report on undefined symbols */ | |
284 | ||
285 | static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs; | |
286 | ||
287 | /* Pseudo symbol to use when putting stabs into the symbol table. */ | |
288 | ||
289 | static char stabs_symbol[] = STABS_SYMBOL; | |
290 | ||
291 | /* Types corresponding to mdebug format bt* basic types. */ | |
292 | ||
293 | static struct type *mdebug_type_void; | |
294 | static struct type *mdebug_type_char; | |
295 | static struct type *mdebug_type_short; | |
296 | static struct type *mdebug_type_int_32; | |
297 | #define mdebug_type_int mdebug_type_int_32 | |
298 | static struct type *mdebug_type_int_64; | |
299 | static struct type *mdebug_type_long_32; | |
300 | static struct type *mdebug_type_long_64; | |
301 | static struct type *mdebug_type_long_long_64; | |
302 | static struct type *mdebug_type_unsigned_char; | |
303 | static struct type *mdebug_type_unsigned_short; | |
304 | static struct type *mdebug_type_unsigned_int_32; | |
305 | static struct type *mdebug_type_unsigned_int_64; | |
306 | static struct type *mdebug_type_unsigned_long_32; | |
307 | static struct type *mdebug_type_unsigned_long_64; | |
308 | static struct type *mdebug_type_unsigned_long_long_64; | |
309 | static struct type *mdebug_type_adr_32; | |
310 | static struct type *mdebug_type_adr_64; | |
311 | static struct type *mdebug_type_float; | |
312 | static struct type *mdebug_type_double; | |
313 | static struct type *mdebug_type_complex; | |
314 | static struct type *mdebug_type_double_complex; | |
315 | static struct type *mdebug_type_fixed_dec; | |
316 | static struct type *mdebug_type_float_dec; | |
317 | static struct type *mdebug_type_string; | |
318 | ||
319 | /* Types for symbols from files compiled without debugging info. */ | |
320 | ||
321 | static struct type *nodebug_func_symbol_type; | |
322 | static struct type *nodebug_var_symbol_type; | |
323 | ||
324 | /* Nonzero if we have seen ecoff debugging info for a file. */ | |
325 | ||
326 | static int found_ecoff_debugging_info; | |
327 | ||
328 | /* Forward declarations */ | |
329 | ||
a14ed312 | 330 | static void add_pending (FDR *, char *, struct type *); |
c906108c | 331 | |
a14ed312 | 332 | static struct mdebug_pending *is_pending_symbol (FDR *, char *); |
c906108c | 333 | |
a14ed312 | 334 | static void pop_parse_stack (void); |
c906108c | 335 | |
a14ed312 | 336 | static void push_parse_stack (void); |
c906108c | 337 | |
a14ed312 | 338 | static char *fdr_name (FDR *); |
c906108c | 339 | |
a14ed312 | 340 | static void mdebug_psymtab_to_symtab (struct partial_symtab *); |
c906108c SS |
341 | |
342 | static int | |
a14ed312 | 343 | upgrade_type (int, struct type **, int, union aux_ext *, int, char *); |
c906108c | 344 | |
a14ed312 | 345 | static void parse_partial_symbols (struct objfile *); |
c906108c | 346 | |
a14ed312 | 347 | static FDR * get_rfd (int, int); |
c906108c | 348 | |
a14ed312 | 349 | static int has_opaque_xref (FDR *, SYMR *); |
c906108c SS |
350 | |
351 | static int | |
a14ed312 KB |
352 | cross_ref (int, union aux_ext *, struct type **, enum type_code, |
353 | char **, int, char *); | |
c906108c | 354 | |
a14ed312 | 355 | static struct symbol *new_symbol (char *); |
c906108c | 356 | |
a14ed312 | 357 | static struct type *new_type (char *); |
c906108c | 358 | |
a14ed312 | 359 | static struct block *new_block (int); |
c906108c | 360 | |
a14ed312 | 361 | static struct symtab *new_symtab (char *, int, int, struct objfile *); |
c906108c | 362 | |
a14ed312 | 363 | static struct linetable *new_linetable (int); |
c906108c | 364 | |
a14ed312 | 365 | static struct blockvector *new_bvect (int); |
c906108c SS |
366 | |
367 | static int | |
a14ed312 KB |
368 | parse_symbol (SYMR *, union aux_ext *, char *, int, struct section_offsets *, |
369 | struct objfile *); | |
c906108c | 370 | |
a14ed312 KB |
371 | static struct type *parse_type (int, union aux_ext *, unsigned int, int *, |
372 | int, char *); | |
c906108c | 373 | |
a14ed312 KB |
374 | static struct symbol *mylookup_symbol (char *, struct block *, namespace_enum, |
375 | enum address_class); | |
c906108c | 376 | |
a14ed312 | 377 | static struct block *shrink_block (struct block *, struct symtab *); |
c906108c | 378 | |
a14ed312 | 379 | static PTR xzalloc (unsigned int); |
c906108c | 380 | |
a14ed312 | 381 | static void sort_blocks (struct symtab *); |
c906108c | 382 | |
09d011c5 | 383 | static int compare_blocks (const PTR, const PTR); |
c906108c | 384 | |
a14ed312 | 385 | static struct partial_symtab *new_psymtab (char *, struct objfile *); |
c906108c | 386 | |
a14ed312 | 387 | static void psymtab_to_symtab_1 (struct partial_symtab *, char *); |
c906108c | 388 | |
a14ed312 | 389 | static void add_block (struct block *, struct symtab *); |
c906108c | 390 | |
a14ed312 | 391 | static void add_symbol (struct symbol *, struct block *); |
c906108c | 392 | |
a14ed312 | 393 | static int add_line (struct linetable *, int, CORE_ADDR, int); |
c906108c | 394 | |
a14ed312 | 395 | static struct linetable *shrink_linetable (struct linetable *); |
c906108c SS |
396 | |
397 | static void | |
a14ed312 | 398 | handle_psymbol_enumerators (struct objfile *, FDR *, int, CORE_ADDR); |
c906108c | 399 | |
a14ed312 | 400 | static char *mdebug_next_symbol_text (struct objfile *); |
c906108c SS |
401 | \f |
402 | /* Address bounds for the signal trampoline in inferior, if any */ | |
403 | ||
404 | CORE_ADDR sigtramp_address, sigtramp_end; | |
405 | ||
406 | /* Allocate zeroed memory */ | |
407 | ||
408 | static PTR | |
fba45db2 | 409 | xzalloc (unsigned int size) |
c906108c SS |
410 | { |
411 | PTR p = xmalloc (size); | |
412 | ||
413 | memset (p, 0, size); | |
414 | return p; | |
415 | } | |
416 | ||
417 | /* Exported procedure: Builds a symtab from the PST partial one. | |
418 | Restores the environment in effect when PST was created, delegates | |
419 | most of the work to an ancillary procedure, and sorts | |
420 | and reorders the symtab list at the end */ | |
421 | ||
422 | static void | |
fba45db2 | 423 | mdebug_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
424 | { |
425 | ||
426 | if (!pst) | |
427 | return; | |
428 | ||
429 | if (info_verbose) | |
430 | { | |
431 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
432 | gdb_flush (gdb_stdout); | |
433 | } | |
434 | ||
435 | next_symbol_text_func = mdebug_next_symbol_text; | |
436 | ||
437 | psymtab_to_symtab_1 (pst, pst->filename); | |
438 | ||
439 | /* Match with global symbols. This only needs to be done once, | |
440 | after all of the symtabs and dependencies have been read in. */ | |
441 | scan_file_globals (pst->objfile); | |
442 | ||
443 | if (info_verbose) | |
444 | printf_filtered ("done.\n"); | |
445 | } | |
446 | \f | |
447 | /* File-level interface functions */ | |
448 | ||
449 | /* Find a file descriptor given its index RF relative to a file CF */ | |
450 | ||
451 | static FDR * | |
fba45db2 | 452 | get_rfd (int cf, int rf) |
c906108c SS |
453 | { |
454 | FDR *fdrs; | |
455 | register FDR *f; | |
456 | RFDT rfd; | |
457 | ||
458 | fdrs = debug_info->fdr; | |
459 | f = fdrs + cf; | |
460 | /* Object files do not have the RFD table, all refs are absolute */ | |
461 | if (f->rfdBase == 0) | |
462 | return fdrs + rf; | |
463 | (*debug_swap->swap_rfd_in) (cur_bfd, | |
c5aa993b JM |
464 | ((char *) debug_info->external_rfd |
465 | + ((f->rfdBase + rf) | |
466 | * debug_swap->external_rfd_size)), | |
467 | &rfd); | |
c906108c SS |
468 | return fdrs + rfd; |
469 | } | |
470 | ||
471 | /* Return a safer print NAME for a file descriptor */ | |
472 | ||
473 | static char * | |
fba45db2 | 474 | fdr_name (FDR *f) |
c906108c SS |
475 | { |
476 | if (f->rss == -1) | |
477 | return "<stripped file>"; | |
478 | if (f->rss == 0) | |
479 | return "<NFY>"; | |
480 | return debug_info->ss + f->issBase + f->rss; | |
481 | } | |
482 | ||
483 | ||
484 | /* Read in and parse the symtab of the file OBJFILE. Symbols from | |
485 | different sections are relocated via the SECTION_OFFSETS. */ | |
486 | ||
487 | void | |
fba45db2 KB |
488 | mdebug_build_psymtabs (struct objfile *objfile, |
489 | const struct ecoff_debug_swap *swap, | |
490 | struct ecoff_debug_info *info) | |
c906108c SS |
491 | { |
492 | cur_bfd = objfile->obfd; | |
493 | debug_swap = swap; | |
494 | debug_info = info; | |
495 | ||
d3d55eeb EZ |
496 | stabsread_new_init (); |
497 | buildsym_new_init (); | |
498 | free_header_files (); | |
499 | init_header_files (); | |
500 | ||
c906108c SS |
501 | /* Make sure all the FDR information is swapped in. */ |
502 | if (info->fdr == (FDR *) NULL) | |
503 | { | |
504 | char *fdr_src; | |
505 | char *fdr_end; | |
506 | FDR *fdr_ptr; | |
507 | ||
508 | info->fdr = (FDR *) obstack_alloc (&objfile->psymbol_obstack, | |
509 | (info->symbolic_header.ifdMax | |
510 | * sizeof (FDR))); | |
511 | fdr_src = info->external_fdr; | |
512 | fdr_end = (fdr_src | |
513 | + info->symbolic_header.ifdMax * swap->external_fdr_size); | |
514 | fdr_ptr = info->fdr; | |
515 | for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++) | |
516 | (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr); | |
517 | } | |
518 | ||
d4f3574e | 519 | parse_partial_symbols (objfile); |
c906108c | 520 | |
3973eadd JB |
521 | /* Take the text ranges the partial symbol scanner computed for each |
522 | of the psymtabs and convert it into the canonical form for | |
523 | psymtabs. */ | |
524 | { | |
525 | struct partial_symtab *p; | |
526 | ||
527 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
528 | { | |
529 | p->textlow = TEXTLOW (p); | |
530 | p->texthigh = TEXTHIGH (p); | |
531 | } | |
532 | } | |
533 | ||
c906108c SS |
534 | #if 0 |
535 | /* Check to make sure file was compiled with -g. If not, warn the | |
536 | user of this limitation. */ | |
537 | if (compare_glevel (max_glevel, GLEVEL_2) < 0) | |
538 | { | |
539 | if (max_gdbinfo == 0) | |
540 | printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n", | |
c5aa993b | 541 | objfile->name); |
c906108c SS |
542 | printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n"); |
543 | gdb_flush (gdb_stdout); | |
544 | } | |
545 | #endif | |
546 | } | |
547 | \f | |
548 | /* Local utilities */ | |
549 | ||
550 | /* Map of FDR indexes to partial symtabs */ | |
551 | ||
552 | struct pst_map | |
553 | { | |
554 | struct partial_symtab *pst; /* the psymtab proper */ | |
555 | long n_globals; /* exported globals (external symbols) */ | |
556 | long globals_offset; /* cumulative */ | |
557 | }; | |
558 | ||
559 | ||
560 | /* Utility stack, used to nest procedures and blocks properly. | |
561 | It is a doubly linked list, to avoid too many alloc/free. | |
562 | Since we might need it quite a few times it is NOT deallocated | |
563 | after use. */ | |
564 | ||
565 | static struct parse_stack | |
c5aa993b JM |
566 | { |
567 | struct parse_stack *next, *prev; | |
568 | struct symtab *cur_st; /* Current symtab. */ | |
569 | struct block *cur_block; /* Block in it. */ | |
570 | ||
571 | /* What are we parsing. stFile, or stBlock are for files and | |
572 | blocks. stProc or stStaticProc means we have seen the start of a | |
573 | procedure, but not the start of the block within in. When we see | |
574 | the start of that block, we change it to stNil, without pushing a | |
575 | new block, i.e. stNil means both a procedure and a block. */ | |
576 | ||
577 | int blocktype; | |
578 | ||
579 | int maxsyms; /* Max symbols in this block. */ | |
580 | struct type *cur_type; /* Type we parse fields for. */ | |
581 | int cur_field; /* Field number in cur_type. */ | |
582 | CORE_ADDR procadr; /* Start addres of this procedure */ | |
583 | int numargs; /* Its argument count */ | |
584 | } | |
c906108c SS |
585 | |
586 | *top_stack; /* Top stack ptr */ | |
587 | ||
588 | ||
589 | /* Enter a new lexical context */ | |
590 | ||
591 | static void | |
fba45db2 | 592 | push_parse_stack (void) |
c906108c SS |
593 | { |
594 | struct parse_stack *new; | |
595 | ||
596 | /* Reuse frames if possible */ | |
597 | if (top_stack && top_stack->prev) | |
598 | new = top_stack->prev; | |
599 | else | |
600 | new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack)); | |
601 | /* Initialize new frame with previous content */ | |
602 | if (top_stack) | |
603 | { | |
604 | register struct parse_stack *prev = new->prev; | |
605 | ||
606 | *new = *top_stack; | |
607 | top_stack->prev = new; | |
608 | new->prev = prev; | |
609 | new->next = top_stack; | |
610 | } | |
611 | top_stack = new; | |
612 | } | |
613 | ||
614 | /* Exit a lexical context */ | |
615 | ||
616 | static void | |
fba45db2 | 617 | pop_parse_stack (void) |
c906108c SS |
618 | { |
619 | if (!top_stack) | |
620 | return; | |
621 | if (top_stack->next) | |
622 | top_stack = top_stack->next; | |
623 | } | |
624 | ||
625 | ||
626 | /* Cross-references might be to things we haven't looked at | |
627 | yet, e.g. type references. To avoid too many type | |
628 | duplications we keep a quick fixup table, an array | |
629 | of lists of references indexed by file descriptor */ | |
630 | ||
631 | struct mdebug_pending | |
632 | { | |
633 | struct mdebug_pending *next; /* link */ | |
634 | char *s; /* the unswapped symbol */ | |
635 | struct type *t; /* its partial type descriptor */ | |
636 | }; | |
637 | ||
638 | ||
639 | /* The pending information is kept for an entire object file, and used | |
640 | to be in the sym_private field. I took it out when I split | |
641 | mdebugread from mipsread, because this might not be the only type | |
642 | of symbols read from an object file. Instead, we allocate the | |
643 | pending information table when we create the partial symbols, and | |
644 | we store a pointer to the single table in each psymtab. */ | |
645 | ||
646 | static struct mdebug_pending **pending_list; | |
647 | ||
648 | /* Check whether we already saw symbol SH in file FH */ | |
649 | ||
650 | static struct mdebug_pending * | |
fba45db2 | 651 | is_pending_symbol (FDR *fh, char *sh) |
c906108c SS |
652 | { |
653 | int f_idx = fh - debug_info->fdr; | |
654 | register struct mdebug_pending *p; | |
655 | ||
656 | /* Linear search is ok, list is typically no more than 10 deep */ | |
657 | for (p = pending_list[f_idx]; p; p = p->next) | |
658 | if (p->s == sh) | |
659 | break; | |
660 | return p; | |
661 | } | |
662 | ||
663 | /* Add a new symbol SH of type T */ | |
664 | ||
665 | static void | |
fba45db2 | 666 | add_pending (FDR *fh, char *sh, struct type *t) |
c906108c SS |
667 | { |
668 | int f_idx = fh - debug_info->fdr; | |
669 | struct mdebug_pending *p = is_pending_symbol (fh, sh); | |
670 | ||
671 | /* Make sure we do not make duplicates */ | |
672 | if (!p) | |
673 | { | |
674 | p = ((struct mdebug_pending *) | |
675 | obstack_alloc (¤t_objfile->psymbol_obstack, | |
676 | sizeof (struct mdebug_pending))); | |
677 | p->s = sh; | |
678 | p->t = t; | |
679 | p->next = pending_list[f_idx]; | |
680 | pending_list[f_idx] = p; | |
681 | } | |
682 | } | |
683 | \f | |
684 | ||
685 | /* Parsing Routines proper. */ | |
686 | ||
687 | /* Parse a single symbol. Mostly just make up a GDB symbol for it. | |
688 | For blocks, procedures and types we open a new lexical context. | |
689 | This is basically just a big switch on the symbol's type. Argument | |
690 | AX is the base pointer of aux symbols for this file (fh->iauxBase). | |
691 | EXT_SH points to the unswapped symbol, which is needed for struct, | |
692 | union, etc., types; it is NULL for an EXTR. BIGEND says whether | |
693 | aux symbols are big-endian or little-endian. Return count of | |
694 | SYMR's handled (normally one). */ | |
695 | ||
696 | static int | |
fba45db2 KB |
697 | parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend, |
698 | struct section_offsets *section_offsets, struct objfile *objfile) | |
c906108c SS |
699 | { |
700 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
507f3c78 | 701 | void (*const swap_sym_in) (bfd *, PTR, SYMR *) = debug_swap->swap_sym_in; |
c906108c SS |
702 | char *name; |
703 | struct symbol *s; | |
704 | struct block *b; | |
705 | struct mdebug_pending *pend; | |
706 | struct type *t; | |
707 | struct field *f; | |
708 | int count = 1; | |
709 | enum address_class class; | |
710 | TIR tir; | |
711 | long svalue = sh->value; | |
712 | int bitsize; | |
713 | ||
714 | if (ext_sh == (char *) NULL) | |
715 | name = debug_info->ssext + sh->iss; | |
716 | else | |
717 | name = debug_info->ss + cur_fdr->issBase + sh->iss; | |
718 | ||
719 | switch (sh->sc) | |
720 | { | |
721 | case scText: | |
722 | case scRConst: | |
723 | /* Do not relocate relative values. | |
c5aa993b JM |
724 | The value of a stEnd symbol is the displacement from the |
725 | corresponding start symbol value. | |
726 | The value of a stBlock symbol is the displacement from the | |
727 | procedure address. */ | |
c906108c | 728 | if (sh->st != stEnd && sh->st != stBlock) |
b8fbeb18 | 729 | sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
730 | break; |
731 | case scData: | |
732 | case scSData: | |
733 | case scRData: | |
734 | case scPData: | |
735 | case scXData: | |
b8fbeb18 | 736 | sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
737 | break; |
738 | case scBss: | |
739 | case scSBss: | |
b8fbeb18 | 740 | sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
741 | break; |
742 | } | |
743 | ||
744 | switch (sh->st) | |
745 | { | |
746 | case stNil: | |
747 | break; | |
748 | ||
749 | case stGlobal: /* external symbol, goes into global block */ | |
750 | class = LOC_STATIC; | |
751 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
752 | GLOBAL_BLOCK); | |
753 | s = new_symbol (name); | |
754 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
755 | goto data; | |
756 | ||
757 | case stStatic: /* static data, goes into current block. */ | |
758 | class = LOC_STATIC; | |
759 | b = top_stack->cur_block; | |
760 | s = new_symbol (name); | |
c5aa993b | 761 | if (SC_IS_COMMON (sh->sc)) |
c906108c SS |
762 | { |
763 | /* It is a FORTRAN common block. At least for SGI Fortran the | |
764 | address is not in the symbol; we need to fix it later in | |
765 | scan_file_globals. */ | |
766 | int bucket = hashname (SYMBOL_NAME (s)); | |
767 | SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket]; | |
768 | global_sym_chain[bucket] = s; | |
769 | } | |
770 | else | |
771 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
772 | goto data; | |
773 | ||
774 | case stLocal: /* local variable, goes into current block */ | |
775 | if (sh->sc == scRegister) | |
776 | { | |
777 | class = LOC_REGISTER; | |
778 | svalue = ECOFF_REG_TO_REGNUM (svalue); | |
779 | } | |
780 | else | |
781 | class = LOC_LOCAL; | |
782 | b = top_stack->cur_block; | |
783 | s = new_symbol (name); | |
784 | SYMBOL_VALUE (s) = svalue; | |
785 | ||
786 | data: /* Common code for symbols describing data */ | |
787 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
788 | SYMBOL_CLASS (s) = class; | |
789 | add_symbol (s, b); | |
790 | ||
791 | /* Type could be missing if file is compiled without debugging info. */ | |
c5aa993b | 792 | if (SC_IS_UNDEF (sh->sc) |
c906108c SS |
793 | || sh->sc == scNil || sh->index == indexNil) |
794 | SYMBOL_TYPE (s) = nodebug_var_symbol_type; | |
795 | else | |
796 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
797 | /* Value of a data symbol is its memory address */ | |
798 | break; | |
799 | ||
800 | case stParam: /* arg to procedure, goes into current block */ | |
801 | max_gdbinfo++; | |
802 | found_ecoff_debugging_info = 1; | |
803 | top_stack->numargs++; | |
804 | ||
805 | /* Special GNU C++ name. */ | |
806 | if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0) | |
807 | name = "this"; /* FIXME, not alloc'd in obstack */ | |
808 | s = new_symbol (name); | |
809 | ||
810 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
811 | switch (sh->sc) | |
812 | { | |
813 | case scRegister: | |
814 | /* Pass by value in register. */ | |
c5aa993b | 815 | SYMBOL_CLASS (s) = LOC_REGPARM; |
c906108c SS |
816 | svalue = ECOFF_REG_TO_REGNUM (svalue); |
817 | break; | |
818 | case scVar: | |
819 | /* Pass by reference on stack. */ | |
c5aa993b | 820 | SYMBOL_CLASS (s) = LOC_REF_ARG; |
c906108c SS |
821 | break; |
822 | case scVarRegister: | |
823 | /* Pass by reference in register. */ | |
c5aa993b | 824 | SYMBOL_CLASS (s) = LOC_REGPARM_ADDR; |
c906108c SS |
825 | svalue = ECOFF_REG_TO_REGNUM (svalue); |
826 | break; | |
827 | default: | |
828 | /* Pass by value on stack. */ | |
c5aa993b | 829 | SYMBOL_CLASS (s) = LOC_ARG; |
c906108c SS |
830 | break; |
831 | } | |
832 | SYMBOL_VALUE (s) = svalue; | |
833 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
834 | add_symbol (s, top_stack->cur_block); | |
835 | break; | |
836 | ||
837 | case stLabel: /* label, goes into current block */ | |
838 | s = new_symbol (name); | |
839 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; /* so that it can be used */ | |
840 | SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */ | |
841 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
842 | SYMBOL_TYPE (s) = mdebug_type_int; | |
843 | add_symbol (s, top_stack->cur_block); | |
844 | break; | |
845 | ||
846 | case stProc: /* Procedure, usually goes into global block */ | |
847 | case stStaticProc: /* Static procedure, goes into current block */ | |
848 | s = new_symbol (name); | |
849 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
850 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
851 | /* Type of the return value */ | |
c5aa993b | 852 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
853 | t = mdebug_type_int; |
854 | else | |
855 | { | |
856 | t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name); | |
c5aa993b | 857 | if (STREQ (name, "malloc") && t->code == TYPE_CODE_VOID) |
c906108c SS |
858 | { |
859 | /* I don't know why, but, at least under Alpha GNU/Linux, | |
c5aa993b JM |
860 | when linking against a malloc without debugging |
861 | symbols, its read as a function returning void---this | |
862 | is bad because it means we cannot call functions with | |
863 | string arguments interactively; i.e., "call | |
864 | printf("howdy\n")" would fail with the error message | |
865 | "program has no memory available". To avoid this, we | |
866 | patch up the type and make it void* | |
867 | instead. (davidm@azstarnet.com) | |
868 | */ | |
c906108c SS |
869 | t = make_pointer_type (t, NULL); |
870 | } | |
871 | } | |
872 | b = top_stack->cur_block; | |
873 | if (sh->st == stProc) | |
874 | { | |
875 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
876 | /* The next test should normally be true, but provides a | |
877 | hook for nested functions (which we don't want to make | |
878 | global). */ | |
879 | if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) | |
880 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
881 | /* Irix 5 sometimes has duplicate names for the same | |
882 | function. We want to add such names up at the global | |
883 | level, not as a nested function. */ | |
884 | else if (sh->value == top_stack->procadr) | |
885 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
886 | } | |
887 | add_symbol (s, b); | |
888 | ||
889 | /* Make a type for the procedure itself */ | |
890 | SYMBOL_TYPE (s) = lookup_function_type (t); | |
891 | ||
892 | /* Create and enter a new lexical context */ | |
893 | b = new_block (top_stack->maxsyms); | |
894 | SYMBOL_BLOCK_VALUE (s) = b; | |
895 | BLOCK_FUNCTION (b) = s; | |
896 | BLOCK_START (b) = BLOCK_END (b) = sh->value; | |
897 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
898 | add_block (b, top_stack->cur_st); | |
899 | ||
900 | /* Not if we only have partial info */ | |
c5aa993b | 901 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
902 | break; |
903 | ||
904 | push_parse_stack (); | |
905 | top_stack->cur_block = b; | |
906 | top_stack->blocktype = sh->st; | |
907 | top_stack->cur_type = SYMBOL_TYPE (s); | |
908 | top_stack->cur_field = -1; | |
909 | top_stack->procadr = sh->value; | |
910 | top_stack->numargs = 0; | |
911 | break; | |
912 | ||
913 | /* Beginning of code for structure, union, and enum definitions. | |
c5aa993b | 914 | They all share a common set of local variables, defined here. */ |
c906108c SS |
915 | { |
916 | enum type_code type_code; | |
917 | char *ext_tsym; | |
918 | int nfields; | |
919 | long max_value; | |
920 | struct field *f; | |
921 | ||
922 | case stStruct: /* Start a block defining a struct type */ | |
923 | type_code = TYPE_CODE_STRUCT; | |
924 | goto structured_common; | |
925 | ||
926 | case stUnion: /* Start a block defining a union type */ | |
927 | type_code = TYPE_CODE_UNION; | |
928 | goto structured_common; | |
929 | ||
930 | case stEnum: /* Start a block defining an enum type */ | |
931 | type_code = TYPE_CODE_ENUM; | |
932 | goto structured_common; | |
933 | ||
934 | case stBlock: /* Either a lexical block, or some type */ | |
c5aa993b | 935 | if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc)) |
c906108c SS |
936 | goto case_stBlock_code; /* Lexical block */ |
937 | ||
938 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ | |
939 | ||
940 | /* Common code for handling struct, union, enum, and/or as-yet- | |
941 | unknown-type blocks of info about structured data. `type_code' | |
942 | has been set to the proper TYPE_CODE, if we know it. */ | |
943 | structured_common: | |
944 | found_ecoff_debugging_info = 1; | |
945 | push_parse_stack (); | |
946 | top_stack->blocktype = stBlock; | |
947 | ||
948 | /* First count the number of fields and the highest value. */ | |
949 | nfields = 0; | |
950 | max_value = 0; | |
951 | for (ext_tsym = ext_sh + external_sym_size; | |
952 | ; | |
953 | ext_tsym += external_sym_size) | |
954 | { | |
955 | SYMR tsym; | |
956 | ||
957 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
958 | ||
959 | switch (tsym.st) | |
960 | { | |
961 | case stEnd: | |
962 | goto end_of_fields; | |
963 | ||
964 | case stMember: | |
965 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
966 | { |
967 | /* If the type of the member is Nil (or Void), | |
968 | without qualifiers, assume the tag is an | |
969 | enumeration. | |
970 | Alpha cc -migrate enums are recognized by a zero | |
971 | index and a zero symbol value. | |
972 | DU 4.0 cc enums are recognized by a member type of | |
973 | btEnum without qualifiers and a zero symbol value. */ | |
974 | if (tsym.index == indexNil | |
975 | || (tsym.index == 0 && sh->value == 0)) | |
976 | type_code = TYPE_CODE_ENUM; | |
977 | else | |
978 | { | |
979 | (*debug_swap->swap_tir_in) (bigend, | |
980 | &ax[tsym.index].a_ti, | |
981 | &tir); | |
982 | if ((tir.bt == btNil || tir.bt == btVoid | |
983 | || (tir.bt == btEnum && sh->value == 0)) | |
984 | && tir.tq0 == tqNil) | |
985 | type_code = TYPE_CODE_ENUM; | |
986 | } | |
987 | } | |
c906108c SS |
988 | nfields++; |
989 | if (tsym.value > max_value) | |
990 | max_value = tsym.value; | |
991 | break; | |
992 | ||
993 | case stBlock: | |
994 | case stUnion: | |
995 | case stEnum: | |
996 | case stStruct: | |
997 | { | |
998 | #if 0 | |
999 | /* This is a no-op; is it trying to tell us something | |
1000 | we should be checking? */ | |
c5aa993b | 1001 | if (tsym.sc == scVariant); /*UNIMPLEMENTED */ |
c906108c SS |
1002 | #endif |
1003 | if (tsym.index != 0) | |
1004 | { | |
1005 | /* This is something like a struct within a | |
c5aa993b JM |
1006 | struct. Skip over the fields of the inner |
1007 | struct. The -1 is because the for loop will | |
1008 | increment ext_tsym. */ | |
c906108c SS |
1009 | ext_tsym = ((char *) debug_info->external_sym |
1010 | + ((cur_fdr->isymBase + tsym.index - 1) | |
1011 | * external_sym_size)); | |
1012 | } | |
1013 | } | |
1014 | break; | |
1015 | ||
1016 | case stTypedef: | |
1017 | /* mips cc puts out a typedef for struct x if it is not yet | |
1018 | defined when it encounters | |
1019 | struct y { struct x *xp; }; | |
1020 | Just ignore it. */ | |
1021 | break; | |
1022 | ||
1023 | case stIndirect: | |
1024 | /* Irix5 cc puts out a stIndirect for struct x if it is not | |
1025 | yet defined when it encounters | |
1026 | struct y { struct x *xp; }; | |
1027 | Just ignore it. */ | |
1028 | break; | |
1029 | ||
1030 | default: | |
1031 | complain (&block_member_complaint, tsym.st); | |
1032 | } | |
1033 | } | |
1034 | end_of_fields:; | |
1035 | ||
1036 | /* In an stBlock, there is no way to distinguish structs, | |
1037 | unions, and enums at this point. This is a bug in the | |
1038 | original design (that has been fixed with the recent | |
1039 | addition of the stStruct, stUnion, and stEnum symbol | |
1040 | types.) The way you can tell is if/when you see a variable | |
1041 | or field of that type. In that case the variable's type | |
1042 | (in the AUX table) says if the type is struct, union, or | |
1043 | enum, and points back to the stBlock here. So you can | |
1044 | patch the tag kind up later - but only if there actually is | |
1045 | a variable or field of that type. | |
1046 | ||
1047 | So until we know for sure, we will guess at this point. | |
1048 | The heuristic is: | |
1049 | If the first member has index==indexNil or a void type, | |
1050 | assume we have an enumeration. | |
1051 | Otherwise, if there is more than one member, and all | |
1052 | the members have offset 0, assume we have a union. | |
1053 | Otherwise, assume we have a struct. | |
1054 | ||
1055 | The heuristic could guess wrong in the case of of an | |
1056 | enumeration with no members or a union with one (or zero) | |
1057 | members, or when all except the last field of a struct have | |
1058 | width zero. These are uncommon and/or illegal situations, | |
1059 | and in any case guessing wrong probably doesn't matter | |
1060 | much. | |
1061 | ||
1062 | But if we later do find out we were wrong, we fixup the tag | |
1063 | kind. Members of an enumeration must be handled | |
1064 | differently from struct/union fields, and that is harder to | |
1065 | patch up, but luckily we shouldn't need to. (If there are | |
1066 | any enumeration members, we can tell for sure it's an enum | |
1067 | here.) */ | |
1068 | ||
1069 | if (type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
1070 | { |
1071 | if (nfields > 1 && max_value == 0) | |
1072 | type_code = TYPE_CODE_UNION; | |
1073 | else | |
1074 | type_code = TYPE_CODE_STRUCT; | |
1075 | } | |
c906108c SS |
1076 | |
1077 | /* Create a new type or use the pending type. */ | |
1078 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1079 | if (pend == (struct mdebug_pending *) NULL) | |
1080 | { | |
1081 | t = new_type (NULL); | |
1082 | add_pending (cur_fdr, ext_sh, t); | |
1083 | } | |
1084 | else | |
1085 | t = pend->t; | |
1086 | ||
1087 | /* Do not set the tag name if it is a compiler generated tag name | |
1088 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. | |
1089 | Alpha cc puts out an sh->iss of zero for those. */ | |
1090 | if (sh->iss == 0 || name[0] == '.' || name[0] == '\0') | |
1091 | TYPE_TAG_NAME (t) = NULL; | |
1092 | else | |
1093 | TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack, | |
1094 | "", "", name); | |
1095 | ||
1096 | TYPE_CODE (t) = type_code; | |
1097 | TYPE_LENGTH (t) = sh->value; | |
1098 | TYPE_NFIELDS (t) = nfields; | |
1099 | TYPE_FIELDS (t) = f = ((struct field *) | |
1100 | TYPE_ALLOC (t, | |
1101 | nfields * sizeof (struct field))); | |
1102 | ||
1103 | if (type_code == TYPE_CODE_ENUM) | |
1104 | { | |
1105 | int unsigned_enum = 1; | |
1106 | ||
1107 | /* This is a non-empty enum. */ | |
1108 | ||
1109 | /* DEC c89 has the number of enumerators in the sh.value field, | |
1110 | not the type length, so we have to compensate for that | |
1111 | incompatibility quirk. | |
1112 | This might do the wrong thing for an enum with one or two | |
1113 | enumerators and gcc -gcoff -fshort-enums, but these cases | |
1114 | are hopefully rare enough. | |
1115 | Alpha cc -migrate has a sh.value field of zero, we adjust | |
1116 | that too. */ | |
1117 | if (TYPE_LENGTH (t) == TYPE_NFIELDS (t) | |
1118 | || TYPE_LENGTH (t) == 0) | |
1119 | TYPE_LENGTH (t) = TARGET_INT_BIT / HOST_CHAR_BIT; | |
1120 | for (ext_tsym = ext_sh + external_sym_size; | |
1121 | ; | |
1122 | ext_tsym += external_sym_size) | |
1123 | { | |
1124 | SYMR tsym; | |
1125 | struct symbol *enum_sym; | |
1126 | ||
1127 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
1128 | ||
1129 | if (tsym.st != stMember) | |
1130 | break; | |
1131 | ||
1132 | FIELD_BITPOS (*f) = tsym.value; | |
1133 | FIELD_TYPE (*f) = t; | |
1134 | FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss; | |
1135 | FIELD_BITSIZE (*f) = 0; | |
1136 | ||
1137 | enum_sym = ((struct symbol *) | |
1138 | obstack_alloc (¤t_objfile->symbol_obstack, | |
1139 | sizeof (struct symbol))); | |
1140 | memset ((PTR) enum_sym, 0, sizeof (struct symbol)); | |
1141 | SYMBOL_NAME (enum_sym) = | |
1142 | obsavestring (f->name, strlen (f->name), | |
1143 | ¤t_objfile->symbol_obstack); | |
1144 | SYMBOL_CLASS (enum_sym) = LOC_CONST; | |
1145 | SYMBOL_TYPE (enum_sym) = t; | |
1146 | SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE; | |
1147 | SYMBOL_VALUE (enum_sym) = tsym.value; | |
1148 | if (SYMBOL_VALUE (enum_sym) < 0) | |
1149 | unsigned_enum = 0; | |
1150 | add_symbol (enum_sym, top_stack->cur_block); | |
1151 | ||
1152 | /* Skip the stMembers that we've handled. */ | |
1153 | count++; | |
1154 | f++; | |
1155 | } | |
1156 | if (unsigned_enum) | |
1157 | TYPE_FLAGS (t) |= TYPE_FLAG_UNSIGNED; | |
1158 | } | |
1159 | /* make this the current type */ | |
1160 | top_stack->cur_type = t; | |
1161 | top_stack->cur_field = 0; | |
1162 | ||
1163 | /* Do not create a symbol for alpha cc unnamed structs. */ | |
1164 | if (sh->iss == 0) | |
1165 | break; | |
1166 | ||
1167 | /* gcc puts out an empty struct for an opaque struct definitions, | |
1168 | do not create a symbol for it either. */ | |
1169 | if (TYPE_NFIELDS (t) == 0) | |
1170 | { | |
1171 | TYPE_FLAGS (t) |= TYPE_FLAG_STUB; | |
1172 | break; | |
1173 | } | |
1174 | ||
1175 | s = new_symbol (name); | |
1176 | SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE; | |
1177 | SYMBOL_CLASS (s) = LOC_TYPEDEF; | |
1178 | SYMBOL_VALUE (s) = 0; | |
1179 | SYMBOL_TYPE (s) = t; | |
1180 | add_symbol (s, top_stack->cur_block); | |
1181 | break; | |
1182 | ||
1183 | /* End of local variables shared by struct, union, enum, and | |
1184 | block (as yet unknown struct/union/enum) processing. */ | |
1185 | } | |
1186 | ||
1187 | case_stBlock_code: | |
1188 | found_ecoff_debugging_info = 1; | |
1189 | /* beginnning of (code) block. Value of symbol | |
c5aa993b | 1190 | is the displacement from procedure start */ |
c906108c SS |
1191 | push_parse_stack (); |
1192 | ||
1193 | /* Do not start a new block if this is the outermost block of a | |
c5aa993b JM |
1194 | procedure. This allows the LOC_BLOCK symbol to point to the |
1195 | block with the local variables, so funcname::var works. */ | |
c906108c SS |
1196 | if (top_stack->blocktype == stProc |
1197 | || top_stack->blocktype == stStaticProc) | |
1198 | { | |
1199 | top_stack->blocktype = stNil; | |
1200 | break; | |
1201 | } | |
1202 | ||
1203 | top_stack->blocktype = stBlock; | |
1204 | b = new_block (top_stack->maxsyms); | |
1205 | BLOCK_START (b) = sh->value + top_stack->procadr; | |
1206 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1207 | top_stack->cur_block = b; | |
1208 | add_block (b, top_stack->cur_st); | |
1209 | break; | |
1210 | ||
1211 | case stEnd: /* end (of anything) */ | |
c5aa993b | 1212 | if (sh->sc == scInfo || SC_IS_COMMON (sh->sc)) |
c906108c SS |
1213 | { |
1214 | /* Finished with type */ | |
1215 | top_stack->cur_type = 0; | |
1216 | } | |
1217 | else if (sh->sc == scText && | |
1218 | (top_stack->blocktype == stProc || | |
1219 | top_stack->blocktype == stStaticProc)) | |
1220 | { | |
1221 | /* Finished with procedure */ | |
1222 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
1223 | struct mips_extra_func_info *e; | |
1224 | struct block *b; | |
1225 | struct type *ftype = top_stack->cur_type; | |
1226 | int i; | |
1227 | ||
1228 | BLOCK_END (top_stack->cur_block) += sh->value; /* size */ | |
1229 | ||
1230 | /* Make up special symbol to contain procedure specific info */ | |
1231 | s = new_symbol (MIPS_EFI_SYMBOL_NAME); | |
1232 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; | |
1233 | SYMBOL_CLASS (s) = LOC_CONST; | |
1234 | SYMBOL_TYPE (s) = mdebug_type_void; | |
1235 | e = ((struct mips_extra_func_info *) | |
1236 | obstack_alloc (¤t_objfile->symbol_obstack, | |
1237 | sizeof (struct mips_extra_func_info))); | |
1238 | memset ((PTR) e, 0, sizeof (struct mips_extra_func_info)); | |
1239 | SYMBOL_VALUE (s) = (long) e; | |
1240 | e->numargs = top_stack->numargs; | |
1241 | e->pdr.framereg = -1; | |
1242 | add_symbol (s, top_stack->cur_block); | |
1243 | ||
1244 | /* Reallocate symbols, saving memory */ | |
1245 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); | |
1246 | ||
1247 | /* f77 emits proc-level with address bounds==[0,0], | |
1248 | So look for such child blocks, and patch them. */ | |
1249 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
1250 | { | |
1251 | struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i); | |
1252 | if (BLOCK_SUPERBLOCK (b_bad) == b | |
1253 | && BLOCK_START (b_bad) == top_stack->procadr | |
1254 | && BLOCK_END (b_bad) == top_stack->procadr) | |
1255 | { | |
1256 | BLOCK_START (b_bad) = BLOCK_START (b); | |
1257 | BLOCK_END (b_bad) = BLOCK_END (b); | |
1258 | } | |
1259 | } | |
1260 | ||
1261 | if (TYPE_NFIELDS (ftype) <= 0) | |
1262 | { | |
1263 | /* No parameter type information is recorded with the function's | |
c5aa993b | 1264 | type. Set that from the type of the parameter symbols. */ |
c906108c SS |
1265 | int nparams = top_stack->numargs; |
1266 | int iparams; | |
1267 | struct symbol *sym; | |
1268 | ||
1269 | if (nparams > 0) | |
1270 | { | |
1271 | TYPE_NFIELDS (ftype) = nparams; | |
1272 | TYPE_FIELDS (ftype) = (struct field *) | |
1273 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
c5aa993b | 1274 | |
c906108c SS |
1275 | for (i = iparams = 0; iparams < nparams; i++) |
1276 | { | |
1277 | sym = BLOCK_SYM (b, i); | |
1278 | switch (SYMBOL_CLASS (sym)) | |
1279 | { | |
1280 | case LOC_ARG: | |
1281 | case LOC_REF_ARG: | |
1282 | case LOC_REGPARM: | |
1283 | case LOC_REGPARM_ADDR: | |
1284 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); | |
8176bb6d | 1285 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c SS |
1286 | iparams++; |
1287 | break; | |
1288 | default: | |
1289 | break; | |
1290 | } | |
1291 | } | |
1292 | } | |
1293 | } | |
1294 | } | |
1295 | else if (sh->sc == scText && top_stack->blocktype == stBlock) | |
1296 | { | |
1297 | /* End of (code) block. The value of the symbol is the | |
1298 | displacement from the procedure`s start address of the | |
1299 | end of this block. */ | |
1300 | BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr; | |
1301 | shrink_block (top_stack->cur_block, top_stack->cur_st); | |
1302 | } | |
1303 | else if (sh->sc == scText && top_stack->blocktype == stNil) | |
1304 | { | |
1305 | /* End of outermost block. Pop parse stack and ignore. The | |
1306 | following stEnd of stProc will take care of the block. */ | |
1307 | ; | |
1308 | } | |
1309 | else if (sh->sc == scText && top_stack->blocktype == stFile) | |
1310 | { | |
1311 | /* End of file. Pop parse stack and ignore. Higher | |
1312 | level code deals with this. */ | |
1313 | ; | |
1314 | } | |
1315 | else | |
1316 | complain (&stEnd_complaint, sh->sc); | |
1317 | ||
1318 | pop_parse_stack (); /* restore previous lexical context */ | |
1319 | break; | |
1320 | ||
1321 | case stMember: /* member of struct or union */ | |
1322 | f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++]; | |
1323 | FIELD_NAME (*f) = name; | |
1324 | FIELD_BITPOS (*f) = sh->value; | |
1325 | bitsize = 0; | |
1326 | FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name); | |
1327 | FIELD_BITSIZE (*f) = bitsize; | |
1328 | break; | |
1329 | ||
1330 | case stIndirect: /* forward declaration on Irix5 */ | |
1331 | /* Forward declarations from Irix5 cc are handled by cross_ref, | |
c5aa993b | 1332 | skip them. */ |
c906108c SS |
1333 | break; |
1334 | ||
1335 | case stTypedef: /* type definition */ | |
1336 | found_ecoff_debugging_info = 1; | |
1337 | ||
1338 | /* Typedefs for forward declarations and opaque structs from alpha cc | |
c5aa993b | 1339 | are handled by cross_ref, skip them. */ |
c906108c SS |
1340 | if (sh->iss == 0) |
1341 | break; | |
1342 | ||
1343 | /* Parse the type or use the pending type. */ | |
1344 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1345 | if (pend == (struct mdebug_pending *) NULL) | |
1346 | { | |
c5aa993b | 1347 | t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name); |
c906108c SS |
1348 | add_pending (cur_fdr, ext_sh, t); |
1349 | } | |
1350 | else | |
1351 | t = pend->t; | |
1352 | ||
1353 | /* mips cc puts out a typedef with the name of the struct for forward | |
c5aa993b JM |
1354 | declarations. These should not go into the symbol table and |
1355 | TYPE_NAME should not be set for them. | |
1356 | They can't be distinguished from an intentional typedef to | |
1357 | the same name however: | |
1358 | x.h: | |
1359 | struct x { int ix; int jx; }; | |
1360 | struct xx; | |
1361 | x.c: | |
1362 | typedef struct x x; | |
1363 | struct xx {int ixx; int jxx; }; | |
1364 | generates a cross referencing stTypedef for x and xx. | |
1365 | The user visible effect of this is that the type of a pointer | |
1366 | to struct foo sometimes is given as `foo *' instead of `struct foo *'. | |
1367 | The problem is fixed with alpha cc and Irix5 cc. */ | |
c906108c SS |
1368 | |
1369 | /* However if the typedef cross references to an opaque aggregate, it | |
c5aa993b | 1370 | is safe to omit it from the symbol table. */ |
c906108c SS |
1371 | |
1372 | if (has_opaque_xref (cur_fdr, sh)) | |
1373 | break; | |
1374 | s = new_symbol (name); | |
1375 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
1376 | SYMBOL_CLASS (s) = LOC_TYPEDEF; | |
1377 | SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block; | |
1378 | SYMBOL_TYPE (s) = t; | |
1379 | add_symbol (s, top_stack->cur_block); | |
1380 | ||
1381 | /* Incomplete definitions of structs should not get a name. */ | |
1382 | if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL | |
1383 | && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0 | |
c5aa993b | 1384 | || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT |
c906108c SS |
1385 | && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION))) |
1386 | { | |
1387 | if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR | |
1388 | || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC) | |
1389 | { | |
1390 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1391 | foo" or "function returning foo", we better not set |
1392 | the TYPE_NAME. If the program contains "typedef char | |
1393 | *caddr_t;", we don't want all variables of type char | |
1394 | * to print as caddr_t. This is not just a | |
1395 | consequence of GDB's type management; CC and GCC (at | |
1396 | least through version 2.4) both output variables of | |
1397 | either type char * or caddr_t with the type | |
1398 | refering to the stTypedef symbol for caddr_t. If a future | |
1399 | compiler cleans this up it GDB is not ready for it | |
1400 | yet, but if it becomes ready we somehow need to | |
1401 | disable this check (without breaking the PCC/GCC2.4 | |
1402 | case). | |
1403 | ||
1404 | Sigh. | |
1405 | ||
1406 | Fortunately, this check seems not to be necessary | |
1407 | for anything except pointers or functions. */ | |
c906108c SS |
1408 | } |
1409 | else | |
1410 | TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s); | |
1411 | } | |
1412 | break; | |
1413 | ||
1414 | case stFile: /* file name */ | |
1415 | push_parse_stack (); | |
1416 | top_stack->blocktype = sh->st; | |
1417 | break; | |
1418 | ||
1419 | /* I`ve never seen these for C */ | |
1420 | case stRegReloc: | |
1421 | break; /* register relocation */ | |
1422 | case stForward: | |
1423 | break; /* forwarding address */ | |
1424 | case stConstant: | |
1425 | break; /* constant */ | |
1426 | default: | |
1427 | complain (&unknown_mdebug_symtype_complaint, sh->st); | |
1428 | break; | |
1429 | } | |
1430 | ||
1431 | return count; | |
1432 | } | |
1433 | ||
1434 | /* Parse the type information provided in the raw AX entries for | |
1435 | the symbol SH. Return the bitfield size in BS, in case. | |
1436 | We must byte-swap the AX entries before we use them; BIGEND says whether | |
1437 | they are big-endian or little-endian (from fh->fBigendian). */ | |
1438 | ||
1439 | static struct type * | |
fba45db2 KB |
1440 | parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs, |
1441 | int bigend, char *sym_name) | |
c906108c SS |
1442 | { |
1443 | /* Null entries in this map are treated specially */ | |
1444 | static struct type **map_bt[] = | |
1445 | { | |
c5aa993b JM |
1446 | &mdebug_type_void, /* btNil */ |
1447 | &mdebug_type_adr_32, /* btAdr */ | |
1448 | &mdebug_type_char, /* btChar */ | |
1449 | &mdebug_type_unsigned_char, /* btUChar */ | |
1450 | &mdebug_type_short, /* btShort */ | |
c906108c | 1451 | &mdebug_type_unsigned_short, /* btUShort */ |
c5aa993b | 1452 | &mdebug_type_int_32, /* btInt */ |
c906108c | 1453 | &mdebug_type_unsigned_int_32, /* btUInt */ |
c5aa993b | 1454 | &mdebug_type_long_32, /* btLong */ |
c906108c | 1455 | &mdebug_type_unsigned_long_32, /* btULong */ |
c5aa993b JM |
1456 | &mdebug_type_float, /* btFloat */ |
1457 | &mdebug_type_double, /* btDouble */ | |
1458 | 0, /* btStruct */ | |
1459 | 0, /* btUnion */ | |
1460 | 0, /* btEnum */ | |
1461 | 0, /* btTypedef */ | |
1462 | 0, /* btRange */ | |
1463 | 0, /* btSet */ | |
1464 | &mdebug_type_complex, /* btComplex */ | |
c906108c | 1465 | &mdebug_type_double_complex, /* btDComplex */ |
c5aa993b JM |
1466 | 0, /* btIndirect */ |
1467 | &mdebug_type_fixed_dec, /* btFixedDec */ | |
1468 | &mdebug_type_float_dec, /* btFloatDec */ | |
1469 | &mdebug_type_string, /* btString */ | |
1470 | 0, /* btBit */ | |
1471 | 0, /* btPicture */ | |
1472 | &mdebug_type_void, /* btVoid */ | |
1473 | 0, /* DEC C++: Pointer to member */ | |
1474 | 0, /* DEC C++: Virtual function table */ | |
1475 | 0, /* DEC C++: Class (Record) */ | |
1476 | &mdebug_type_long_64, /* btLong64 */ | |
c906108c | 1477 | &mdebug_type_unsigned_long_64, /* btULong64 */ |
c5aa993b JM |
1478 | &mdebug_type_long_long_64, /* btLongLong64 */ |
1479 | &mdebug_type_unsigned_long_long_64, /* btULongLong64 */ | |
1480 | &mdebug_type_adr_64, /* btAdr64 */ | |
1481 | &mdebug_type_int_64, /* btInt64 */ | |
c906108c SS |
1482 | &mdebug_type_unsigned_int_64, /* btUInt64 */ |
1483 | }; | |
1484 | ||
1485 | TIR t[1]; | |
1486 | struct type *tp = 0; | |
1487 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1488 | ||
1489 | /* Handle undefined types, they have indexNil. */ | |
1490 | if (aux_index == indexNil) | |
1491 | return mdebug_type_int; | |
1492 | ||
1493 | /* Handle corrupt aux indices. */ | |
1494 | if (aux_index >= (debug_info->fdr + fd)->caux) | |
1495 | { | |
1496 | complain (&index_complaint, sym_name); | |
1497 | return mdebug_type_int; | |
1498 | } | |
1499 | ax += aux_index; | |
1500 | ||
1501 | /* Use aux as a type information record, map its basic type. */ | |
1502 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1503 | if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt))) | |
1504 | { | |
1505 | complain (&basic_type_complaint, t->bt, sym_name); | |
1506 | return mdebug_type_int; | |
1507 | } | |
1508 | if (map_bt[t->bt]) | |
1509 | { | |
1510 | tp = *map_bt[t->bt]; | |
1511 | } | |
1512 | else | |
1513 | { | |
1514 | tp = NULL; | |
1515 | /* Cannot use builtin types -- build our own */ | |
1516 | switch (t->bt) | |
1517 | { | |
1518 | case btStruct: | |
1519 | type_code = TYPE_CODE_STRUCT; | |
1520 | break; | |
1521 | case btUnion: | |
1522 | type_code = TYPE_CODE_UNION; | |
1523 | break; | |
1524 | case btEnum: | |
1525 | type_code = TYPE_CODE_ENUM; | |
1526 | break; | |
1527 | case btRange: | |
1528 | type_code = TYPE_CODE_RANGE; | |
1529 | break; | |
1530 | case btSet: | |
1531 | type_code = TYPE_CODE_SET; | |
1532 | break; | |
1533 | case btIndirect: | |
1534 | /* alpha cc -migrate uses this for typedefs. The true type will | |
1535 | be obtained by crossreferencing below. */ | |
1536 | type_code = TYPE_CODE_ERROR; | |
1537 | break; | |
1538 | case btTypedef: | |
1539 | /* alpha cc uses this for typedefs. The true type will be | |
1540 | obtained by crossreferencing below. */ | |
1541 | type_code = TYPE_CODE_ERROR; | |
1542 | break; | |
1543 | default: | |
1544 | complain (&basic_type_complaint, t->bt, sym_name); | |
1545 | return mdebug_type_int; | |
1546 | } | |
1547 | } | |
1548 | ||
1549 | /* Move on to next aux */ | |
1550 | ax++; | |
1551 | ||
1552 | if (t->fBitfield) | |
1553 | { | |
1554 | int width = AUX_GET_WIDTH (bigend, ax); | |
1555 | ||
1556 | /* Inhibit core dumps with some cfront generated objects that | |
c5aa993b JM |
1557 | corrupt the TIR. */ |
1558 | if (bs == (int *) NULL) | |
c906108c SS |
1559 | { |
1560 | /* Alpha cc -migrate encodes char and unsigned char types | |
1561 | as short and unsigned short types with a field width of 8. | |
1562 | Enum types also have a field width which we ignore for now. */ | |
1563 | if (t->bt == btShort && width == 8) | |
1564 | tp = mdebug_type_char; | |
1565 | else if (t->bt == btUShort && width == 8) | |
1566 | tp = mdebug_type_unsigned_char; | |
1567 | else if (t->bt == btEnum) | |
1568 | ; | |
1569 | else | |
1570 | complain (&bad_fbitfield_complaint, sym_name); | |
1571 | } | |
1572 | else | |
c5aa993b | 1573 | *bs = width; |
c906108c SS |
1574 | ax++; |
1575 | } | |
1576 | ||
1577 | /* A btIndirect entry cross references to an aux entry containing | |
1578 | the type. */ | |
1579 | if (t->bt == btIndirect) | |
1580 | { | |
1581 | RNDXR rn[1]; | |
1582 | int rf; | |
1583 | FDR *xref_fh; | |
1584 | int xref_fd; | |
1585 | ||
1586 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
1587 | ax++; | |
1588 | if (rn->rfd == 0xfff) | |
1589 | { | |
1590 | rf = AUX_GET_ISYM (bigend, ax); | |
1591 | ax++; | |
1592 | } | |
1593 | else | |
1594 | rf = rn->rfd; | |
1595 | ||
1596 | if (rf == -1) | |
1597 | { | |
1598 | complain (&bad_indirect_xref_complaint, sym_name); | |
1599 | return mdebug_type_int; | |
1600 | } | |
1601 | xref_fh = get_rfd (fd, rf); | |
1602 | xref_fd = xref_fh - debug_info->fdr; | |
1603 | tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase, | |
c5aa993b | 1604 | rn->index, (int *) NULL, xref_fh->fBigendian, sym_name); |
c906108c SS |
1605 | } |
1606 | ||
1607 | /* All these types really point to some (common) MIPS type | |
1608 | definition, and only the type-qualifiers fully identify | |
1609 | them. We'll make the same effort at sharing. */ | |
1610 | if (t->bt == btStruct || | |
1611 | t->bt == btUnion || | |
1612 | t->bt == btEnum || | |
1613 | ||
c5aa993b JM |
1614 | /* btSet (I think) implies that the name is a tag name, not a typedef |
1615 | name. This apparently is a MIPS extension for C sets. */ | |
c906108c SS |
1616 | t->bt == btSet) |
1617 | { | |
1618 | char *name; | |
1619 | ||
1620 | /* Try to cross reference this type, build new type on failure. */ | |
1621 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1622 | if (tp == (struct type *) NULL) | |
1623 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
1624 | ||
1625 | /* DEC c89 produces cross references to qualified aggregate types, | |
c5aa993b | 1626 | dereference them. */ |
c906108c SS |
1627 | while (TYPE_CODE (tp) == TYPE_CODE_PTR |
1628 | || TYPE_CODE (tp) == TYPE_CODE_ARRAY) | |
1629 | tp = tp->target_type; | |
1630 | ||
1631 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1632 | Any type may be returned from cross_ref if file indirect entries |
1633 | are corrupted. */ | |
c906108c SS |
1634 | if (TYPE_CODE (tp) != TYPE_CODE_STRUCT |
1635 | && TYPE_CODE (tp) != TYPE_CODE_UNION | |
1636 | && TYPE_CODE (tp) != TYPE_CODE_ENUM) | |
1637 | { | |
1638 | complain (&unexpected_type_code_complaint, sym_name); | |
1639 | } | |
1640 | else | |
1641 | { | |
1642 | ||
1643 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
1644 | exception is if we guessed wrong re struct/union/enum. | |
1645 | But for struct vs. union a wrong guess is harmless, so | |
1646 | don't complain(). */ | |
1647 | if ((TYPE_CODE (tp) == TYPE_CODE_ENUM | |
1648 | && type_code != TYPE_CODE_ENUM) | |
1649 | || (TYPE_CODE (tp) != TYPE_CODE_ENUM | |
1650 | && type_code == TYPE_CODE_ENUM)) | |
1651 | { | |
1652 | complain (&bad_tag_guess_complaint, sym_name); | |
1653 | } | |
1654 | ||
1655 | if (TYPE_CODE (tp) != type_code) | |
1656 | { | |
1657 | TYPE_CODE (tp) = type_code; | |
1658 | } | |
1659 | ||
1660 | /* Do not set the tag name if it is a compiler generated tag name | |
c5aa993b | 1661 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ |
c906108c SS |
1662 | if (name[0] == '.' || name[0] == '\0') |
1663 | TYPE_TAG_NAME (tp) = NULL; | |
1664 | else if (TYPE_TAG_NAME (tp) == NULL | |
1665 | || !STREQ (TYPE_TAG_NAME (tp), name)) | |
1666 | TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name), | |
c5aa993b | 1667 | ¤t_objfile->type_obstack); |
c906108c SS |
1668 | } |
1669 | } | |
1670 | ||
1671 | /* All these types really point to some (common) MIPS type | |
1672 | definition, and only the type-qualifiers fully identify | |
1673 | them. We'll make the same effort at sharing. | |
1674 | FIXME: We are not doing any guessing on range types. */ | |
1675 | if (t->bt == btRange) | |
1676 | { | |
1677 | char *name; | |
1678 | ||
1679 | /* Try to cross reference this type, build new type on failure. */ | |
1680 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1681 | if (tp == (struct type *) NULL) | |
1682 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
1683 | ||
1684 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1685 | Any type may be returned from cross_ref if file indirect entries |
1686 | are corrupted. */ | |
c906108c SS |
1687 | if (TYPE_CODE (tp) != TYPE_CODE_RANGE) |
1688 | { | |
1689 | complain (&unexpected_type_code_complaint, sym_name); | |
1690 | } | |
1691 | else | |
1692 | { | |
1693 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
1694 | exception is if we guessed wrong re struct/union/enum. */ | |
1695 | if (TYPE_CODE (tp) != type_code) | |
1696 | { | |
1697 | complain (&bad_tag_guess_complaint, sym_name); | |
1698 | TYPE_CODE (tp) = type_code; | |
1699 | } | |
1700 | if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name)) | |
1701 | TYPE_NAME (tp) = obsavestring (name, strlen (name), | |
1702 | ¤t_objfile->type_obstack); | |
1703 | } | |
1704 | } | |
1705 | if (t->bt == btTypedef) | |
1706 | { | |
1707 | char *name; | |
1708 | ||
1709 | /* Try to cross reference this type, it should succeed. */ | |
1710 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1711 | if (tp == (struct type *) NULL) | |
1712 | { | |
1713 | complain (&unable_to_cross_ref_complaint, sym_name); | |
1714 | tp = mdebug_type_int; | |
1715 | } | |
1716 | } | |
1717 | ||
1718 | /* Deal with range types */ | |
1719 | if (t->bt == btRange) | |
1720 | { | |
1721 | TYPE_NFIELDS (tp) = 2; | |
1722 | TYPE_FIELDS (tp) = ((struct field *) | |
1723 | TYPE_ALLOC (tp, 2 * sizeof (struct field))); | |
1724 | TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"), | |
c5aa993b | 1725 | ¤t_objfile->type_obstack); |
c906108c SS |
1726 | TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax); |
1727 | ax++; | |
1728 | TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"), | |
c5aa993b | 1729 | ¤t_objfile->type_obstack); |
c906108c SS |
1730 | TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax); |
1731 | ax++; | |
1732 | } | |
1733 | ||
1734 | /* Parse all the type qualifiers now. If there are more | |
1735 | than 6 the game will continue in the next aux */ | |
1736 | ||
1737 | while (1) | |
1738 | { | |
1739 | #define PARSE_TQ(tq) \ | |
1740 | if (t->tq != tqNil) \ | |
1741 | ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \ | |
1742 | else \ | |
1743 | break; | |
1744 | ||
1745 | PARSE_TQ (tq0); | |
1746 | PARSE_TQ (tq1); | |
1747 | PARSE_TQ (tq2); | |
1748 | PARSE_TQ (tq3); | |
1749 | PARSE_TQ (tq4); | |
1750 | PARSE_TQ (tq5); | |
1751 | #undef PARSE_TQ | |
1752 | ||
1753 | /* mips cc 2.x and gcc never put out continued aux entries. */ | |
1754 | if (!t->continued) | |
1755 | break; | |
1756 | ||
1757 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1758 | ax++; | |
1759 | } | |
1760 | ||
1761 | /* Complain for illegal continuations due to corrupt aux entries. */ | |
1762 | if (t->continued) | |
1763 | complain (&bad_continued_complaint, sym_name); | |
c5aa993b | 1764 | |
c906108c SS |
1765 | return tp; |
1766 | } | |
1767 | ||
1768 | /* Make up a complex type from a basic one. Type is passed by | |
1769 | reference in TPP and side-effected as necessary. The type | |
1770 | qualifier TQ says how to handle the aux symbols at AX for | |
1771 | the symbol SX we are currently analyzing. BIGEND says whether | |
1772 | aux symbols are big-endian or little-endian. | |
1773 | Returns the number of aux symbols we parsed. */ | |
1774 | ||
1775 | static int | |
fba45db2 KB |
1776 | upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend, |
1777 | char *sym_name) | |
c906108c SS |
1778 | { |
1779 | int off; | |
1780 | struct type *t; | |
1781 | ||
1782 | /* Used in array processing */ | |
1783 | int rf, id; | |
1784 | FDR *fh; | |
1785 | struct type *range; | |
1786 | struct type *indx; | |
1787 | int lower, upper; | |
1788 | RNDXR rndx; | |
1789 | ||
1790 | switch (tq) | |
1791 | { | |
1792 | case tqPtr: | |
1793 | t = lookup_pointer_type (*tpp); | |
1794 | *tpp = t; | |
1795 | return 0; | |
1796 | ||
1797 | case tqProc: | |
1798 | t = lookup_function_type (*tpp); | |
1799 | *tpp = t; | |
1800 | return 0; | |
1801 | ||
1802 | case tqArray: | |
1803 | off = 0; | |
1804 | ||
1805 | /* Determine and record the domain type (type of index) */ | |
1806 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx); | |
1807 | id = rndx.index; | |
1808 | rf = rndx.rfd; | |
1809 | if (rf == 0xfff) | |
1810 | { | |
1811 | ax++; | |
1812 | rf = AUX_GET_ISYM (bigend, ax); | |
1813 | off++; | |
1814 | } | |
1815 | fh = get_rfd (fd, rf); | |
1816 | ||
1817 | indx = parse_type (fh - debug_info->fdr, | |
1818 | debug_info->external_aux + fh->iauxBase, | |
1819 | id, (int *) NULL, bigend, sym_name); | |
1820 | ||
1821 | /* The bounds type should be an integer type, but might be anything | |
c5aa993b | 1822 | else due to corrupt aux entries. */ |
c906108c SS |
1823 | if (TYPE_CODE (indx) != TYPE_CODE_INT) |
1824 | { | |
1825 | complain (&array_index_type_complaint, sym_name); | |
1826 | indx = mdebug_type_int; | |
1827 | } | |
1828 | ||
1829 | /* Get the bounds, and create the array type. */ | |
1830 | ax++; | |
1831 | lower = AUX_GET_DNLOW (bigend, ax); | |
1832 | ax++; | |
1833 | upper = AUX_GET_DNHIGH (bigend, ax); | |
1834 | ax++; | |
1835 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ | |
1836 | ||
1837 | range = create_range_type ((struct type *) NULL, indx, | |
1838 | lower, upper); | |
1839 | ||
1840 | t = create_array_type ((struct type *) NULL, *tpp, range); | |
1841 | ||
1842 | /* We used to fill in the supplied array element bitsize | |
c5aa993b JM |
1843 | here if the TYPE_LENGTH of the target type was zero. |
1844 | This happens for a `pointer to an array of anonymous structs', | |
1845 | but in this case the array element bitsize is also zero, | |
1846 | so nothing is gained. | |
1847 | And we used to check the TYPE_LENGTH of the target type against | |
1848 | the supplied array element bitsize. | |
1849 | gcc causes a mismatch for `pointer to array of object', | |
1850 | since the sdb directives it uses do not have a way of | |
1851 | specifying the bitsize, but it does no harm (the | |
1852 | TYPE_LENGTH should be correct) and we should be able to | |
1853 | ignore the erroneous bitsize from the auxiliary entry safely. | |
1854 | dbx seems to ignore it too. */ | |
c906108c SS |
1855 | |
1856 | /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH | |
c5aa993b | 1857 | problem. */ |
c906108c SS |
1858 | if (TYPE_LENGTH (*tpp) == 0) |
1859 | { | |
1860 | TYPE_FLAGS (t) |= TYPE_FLAG_TARGET_STUB; | |
1861 | } | |
1862 | ||
1863 | *tpp = t; | |
1864 | return 4 + off; | |
1865 | ||
1866 | case tqVol: | |
1867 | /* Volatile -- currently ignored */ | |
1868 | return 0; | |
1869 | ||
1870 | case tqConst: | |
1871 | /* Const -- currently ignored */ | |
1872 | return 0; | |
1873 | ||
1874 | default: | |
1875 | complain (&unknown_type_qual_complaint, tq); | |
1876 | return 0; | |
1877 | } | |
1878 | } | |
1879 | ||
1880 | ||
1881 | /* Parse a procedure descriptor record PR. Note that the procedure is | |
1882 | parsed _after_ the local symbols, now we just insert the extra | |
1883 | information we need into a MIPS_EFI_SYMBOL_NAME symbol that has | |
1884 | already been placed in the procedure's main block. Note also that | |
1885 | images that have been partially stripped (ld -x) have been deprived | |
1886 | of local symbols, and we have to cope with them here. FIRST_OFF is | |
1887 | the offset of the first procedure for this FDR; we adjust the | |
1888 | address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab | |
1889 | to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol | |
1890 | in question, or NULL to use top_stack->cur_block. */ | |
1891 | ||
a14ed312 | 1892 | static void parse_procedure (PDR *, struct symtab *, struct partial_symtab *); |
c906108c SS |
1893 | |
1894 | static void | |
fba45db2 KB |
1895 | parse_procedure (PDR *pr, struct symtab *search_symtab, |
1896 | struct partial_symtab *pst) | |
c906108c SS |
1897 | { |
1898 | struct symbol *s, *i; | |
1899 | struct block *b; | |
1900 | struct mips_extra_func_info *e; | |
1901 | char *sh_name; | |
1902 | ||
1903 | /* Simple rule to find files linked "-x" */ | |
1904 | if (cur_fdr->rss == -1) | |
1905 | { | |
1906 | if (pr->isym == -1) | |
1907 | { | |
1908 | /* Static procedure at address pr->adr. Sigh. */ | |
1909 | /* FIXME-32x64. assuming pr->adr fits in long. */ | |
1910 | complain (&pdr_static_symbol_complaint, (unsigned long) pr->adr); | |
1911 | return; | |
1912 | } | |
1913 | else | |
1914 | { | |
1915 | /* external */ | |
1916 | EXTR she; | |
c5aa993b | 1917 | |
c906108c SS |
1918 | (*debug_swap->swap_ext_in) (cur_bfd, |
1919 | ((char *) debug_info->external_ext | |
1920 | + (pr->isym | |
1921 | * debug_swap->external_ext_size)), | |
1922 | &she); | |
1923 | sh_name = debug_info->ssext + she.asym.iss; | |
1924 | } | |
1925 | } | |
1926 | else | |
1927 | { | |
1928 | /* Full symbols */ | |
1929 | SYMR sh; | |
1930 | ||
1931 | (*debug_swap->swap_sym_in) (cur_bfd, | |
1932 | ((char *) debug_info->external_sym | |
1933 | + ((cur_fdr->isymBase + pr->isym) | |
1934 | * debug_swap->external_sym_size)), | |
1935 | &sh); | |
1936 | sh_name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
1937 | } | |
1938 | ||
1939 | if (search_symtab != NULL) | |
1940 | { | |
1941 | #if 0 | |
1942 | /* This loses both in the case mentioned (want a static, find a global), | |
c5aa993b JM |
1943 | but also if we are looking up a non-mangled name which happens to |
1944 | match the name of a mangled function. */ | |
c906108c | 1945 | /* We have to save the cur_fdr across the call to lookup_symbol. |
c5aa993b JM |
1946 | If the pdr is for a static function and if a global function with |
1947 | the same name exists, lookup_symbol will eventually read in the symtab | |
1948 | for the global function and clobber cur_fdr. */ | |
c906108c SS |
1949 | FDR *save_cur_fdr = cur_fdr; |
1950 | s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL); | |
1951 | cur_fdr = save_cur_fdr; | |
1952 | #else | |
1953 | s = mylookup_symbol | |
1954 | (sh_name, | |
1955 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK), | |
1956 | VAR_NAMESPACE, | |
1957 | LOC_BLOCK); | |
1958 | #endif | |
1959 | } | |
1960 | else | |
1961 | s = mylookup_symbol (sh_name, top_stack->cur_block, | |
1962 | VAR_NAMESPACE, LOC_BLOCK); | |
1963 | ||
1964 | if (s != 0) | |
1965 | { | |
1966 | b = SYMBOL_BLOCK_VALUE (s); | |
1967 | } | |
1968 | else | |
1969 | { | |
1970 | complain (&pdr_for_nonsymbol_complaint, sh_name); | |
1971 | #if 1 | |
1972 | return; | |
1973 | #else | |
1974 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ | |
1975 | s = new_symbol (sh_name); | |
1976 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
1977 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
1978 | /* Donno its type, hope int is ok */ | |
1979 | SYMBOL_TYPE (s) = lookup_function_type (mdebug_type_int); | |
1980 | add_symbol (s, top_stack->cur_block); | |
1981 | /* Wont have symbols for this one */ | |
1982 | b = new_block (2); | |
1983 | SYMBOL_BLOCK_VALUE (s) = b; | |
1984 | BLOCK_FUNCTION (b) = s; | |
1985 | BLOCK_START (b) = pr->adr; | |
1986 | /* BOUND used to be the end of procedure's text, but the | |
c5aa993b | 1987 | argument is no longer passed in. */ |
c906108c SS |
1988 | BLOCK_END (b) = bound; |
1989 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1990 | add_block (b, top_stack->cur_st); | |
1991 | #endif | |
1992 | } | |
1993 | ||
1994 | i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST); | |
1995 | ||
1996 | if (i) | |
1997 | { | |
1998 | e = (struct mips_extra_func_info *) SYMBOL_VALUE (i); | |
1999 | e->pdr = *pr; | |
2000 | e->pdr.isym = (long) s; | |
2001 | ||
2002 | /* GDB expects the absolute function start address for the | |
c5aa993b JM |
2003 | procedure descriptor in e->pdr.adr. |
2004 | As the address in the procedure descriptor is usually relative, | |
2005 | we would have to relocate e->pdr.adr with cur_fdr->adr and | |
b8fbeb18 | 2006 | ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)). |
c5aa993b JM |
2007 | Unfortunately cur_fdr->adr and e->pdr.adr are both absolute |
2008 | in shared libraries on some systems, and on other systems | |
2009 | e->pdr.adr is sometimes offset by a bogus value. | |
2010 | To work around these problems, we replace e->pdr.adr with | |
2011 | the start address of the function. */ | |
c906108c SS |
2012 | e->pdr.adr = BLOCK_START (b); |
2013 | ||
2014 | /* Correct incorrect setjmp procedure descriptor from the library | |
c5aa993b | 2015 | to make backtrace through setjmp work. */ |
c906108c SS |
2016 | if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp")) |
2017 | { | |
2018 | complain (&bad_setjmp_pdr_complaint, 0); | |
2019 | e->pdr.pcreg = RA_REGNUM; | |
2020 | e->pdr.regmask = 0x80000000; | |
2021 | e->pdr.regoffset = -4; | |
2022 | } | |
2023 | } | |
2024 | ||
2025 | /* It would be reasonable that functions that have been compiled | |
2026 | without debugging info have a btNil type for their return value, | |
2027 | and functions that are void and are compiled with debugging info | |
2028 | have btVoid. | |
2029 | gcc and DEC f77 put out btNil types for both cases, so btNil is mapped | |
2030 | to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info' | |
2031 | case right. | |
2032 | The glevel field in cur_fdr could be used to determine the presence | |
2033 | of debugging info, but GCC doesn't always pass the -g switch settings | |
2034 | to the assembler and GAS doesn't set the glevel field from the -g switch | |
2035 | settings. | |
2036 | To work around these problems, the return value type of a TYPE_CODE_VOID | |
2037 | function is adjusted accordingly if no debugging info was found in the | |
2038 | compilation unit. */ | |
c5aa993b | 2039 | |
c906108c SS |
2040 | if (processing_gcc_compilation == 0 |
2041 | && found_ecoff_debugging_info == 0 | |
2042 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID) | |
2043 | SYMBOL_TYPE (s) = nodebug_func_symbol_type; | |
2044 | } | |
2045 | ||
2046 | /* Relocate the extra function info pointed to by the symbol table. */ | |
2047 | ||
2048 | void | |
fba45db2 | 2049 | ecoff_relocate_efi (struct symbol *sym, CORE_ADDR delta) |
c906108c SS |
2050 | { |
2051 | struct mips_extra_func_info *e; | |
2052 | ||
2053 | e = (struct mips_extra_func_info *) SYMBOL_VALUE (sym); | |
c5aa993b | 2054 | |
c906108c SS |
2055 | e->pdr.adr += delta; |
2056 | } | |
2057 | ||
2058 | /* Parse the external symbol ES. Just call parse_symbol() after | |
2059 | making sure we know where the aux are for it. | |
2060 | BIGEND says whether aux entries are big-endian or little-endian. | |
2061 | ||
2062 | This routine clobbers top_stack->cur_block and ->cur_st. */ | |
2063 | ||
a14ed312 KB |
2064 | static void parse_external (EXTR *, int, struct section_offsets *, |
2065 | struct objfile *); | |
c906108c SS |
2066 | |
2067 | static void | |
fba45db2 KB |
2068 | parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets, |
2069 | struct objfile *objfile) | |
c906108c SS |
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 */ | |
c5aa993b | 2086 | if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil) |
c906108c SS |
2087 | { |
2088 | char *what; | |
2089 | switch (es->asym.st) | |
2090 | { | |
2091 | case stNil: | |
2092 | /* These are generated for static symbols in .o files, | |
2093 | ignore them. */ | |
2094 | return; | |
2095 | case stStaticProc: | |
2096 | case stProc: | |
2097 | what = "procedure"; | |
2098 | n_undef_procs++; | |
2099 | break; | |
2100 | case stGlobal: | |
2101 | what = "variable"; | |
2102 | n_undef_vars++; | |
2103 | break; | |
2104 | case stLabel: | |
2105 | what = "label"; | |
2106 | n_undef_labels++; | |
2107 | break; | |
2108 | default: | |
2109 | what = "symbol"; | |
2110 | break; | |
2111 | } | |
2112 | n_undef_symbols++; | |
2113 | /* FIXME: Turn this into a complaint? */ | |
2114 | if (info_verbose) | |
2115 | printf_filtered ("Warning: %s `%s' is undefined (in %s)\n", | |
2116 | what, debug_info->ssext + es->asym.iss, | |
2117 | fdr_name (cur_fdr)); | |
2118 | return; | |
2119 | } | |
2120 | ||
2121 | switch (es->asym.st) | |
2122 | { | |
2123 | case stProc: | |
2124 | case stStaticProc: | |
2125 | /* There is no need to parse the external procedure symbols. | |
c5aa993b JM |
2126 | If they are from objects compiled without -g, their index will |
2127 | be indexNil, and the symbol definition from the minimal symbol | |
2128 | is preferrable (yielding a function returning int instead of int). | |
2129 | If the index points to a local procedure symbol, the local | |
2130 | symbol already provides the correct type. | |
2131 | Note that the index of the external procedure symbol points | |
2132 | to the local procedure symbol in the local symbol table, and | |
2133 | _not_ to the auxiliary symbol info. */ | |
c906108c SS |
2134 | break; |
2135 | case stGlobal: | |
2136 | case stLabel: | |
2137 | /* Global common symbols are resolved by the runtime loader, | |
c5aa993b JM |
2138 | ignore them. */ |
2139 | if (SC_IS_COMMON (es->asym.sc)) | |
c906108c SS |
2140 | break; |
2141 | ||
2142 | /* Note that the case of a symbol with indexNil must be handled | |
c5aa993b | 2143 | anyways by parse_symbol(). */ |
b8fbeb18 | 2144 | parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets, objfile); |
c906108c SS |
2145 | break; |
2146 | default: | |
2147 | break; | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | /* Parse the line number info for file descriptor FH into | |
2152 | GDB's linetable LT. MIPS' encoding requires a little bit | |
2153 | of magic to get things out. Note also that MIPS' line | |
2154 | numbers can go back and forth, apparently we can live | |
2155 | with that and do not need to reorder our linetables */ | |
2156 | ||
a14ed312 KB |
2157 | static void parse_lines (FDR *, PDR *, struct linetable *, int, |
2158 | struct partial_symtab *, CORE_ADDR); | |
c906108c SS |
2159 | |
2160 | static void | |
fba45db2 KB |
2161 | parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines, |
2162 | struct partial_symtab *pst, CORE_ADDR lowest_pdr_addr) | |
c906108c SS |
2163 | { |
2164 | unsigned char *base; | |
2165 | int j, k; | |
2166 | int delta, count, lineno = 0; | |
2167 | ||
2168 | if (fh->cbLine == 0) | |
2169 | return; | |
2170 | ||
2171 | /* Scan by procedure descriptors */ | |
2172 | k = 0; | |
2173 | for (j = 0; j < fh->cpd; j++, pr++) | |
2174 | { | |
2175 | CORE_ADDR l; | |
2176 | CORE_ADDR adr; | |
2177 | unsigned char *halt; | |
2178 | ||
2179 | /* No code for this one */ | |
2180 | if (pr->iline == ilineNil || | |
2181 | pr->lnLow == -1 || pr->lnHigh == -1) | |
2182 | continue; | |
2183 | ||
2184 | /* Determine start and end address of compressed line bytes for | |
c5aa993b | 2185 | this procedure. */ |
c906108c SS |
2186 | base = debug_info->line + fh->cbLineOffset; |
2187 | if (j != (fh->cpd - 1)) | |
c5aa993b | 2188 | halt = base + pr[1].cbLineOffset; |
c906108c | 2189 | else |
c5aa993b | 2190 | halt = base + fh->cbLine; |
c906108c SS |
2191 | base += pr->cbLineOffset; |
2192 | ||
3973eadd | 2193 | adr = TEXTLOW (pst) + pr->adr - lowest_pdr_addr; |
c906108c SS |
2194 | |
2195 | l = adr >> 2; /* in words */ | |
c5aa993b | 2196 | for (lineno = pr->lnLow; base < halt;) |
c906108c SS |
2197 | { |
2198 | count = *base & 0x0f; | |
2199 | delta = *base++ >> 4; | |
2200 | if (delta >= 8) | |
2201 | delta -= 16; | |
2202 | if (delta == -8) | |
2203 | { | |
2204 | delta = (base[0] << 8) | base[1]; | |
2205 | if (delta >= 0x8000) | |
2206 | delta -= 0x10000; | |
2207 | base += 2; | |
2208 | } | |
2209 | lineno += delta; /* first delta is 0 */ | |
2210 | ||
2211 | /* Complain if the line table overflows. Could happen | |
2212 | with corrupt binaries. */ | |
2213 | if (lt->nitems >= maxlines) | |
2214 | { | |
2215 | complain (&bad_linetable_guess_complaint, fdr_name (fh)); | |
2216 | break; | |
2217 | } | |
2218 | k = add_line (lt, lineno, l, k); | |
2219 | l += count + 1; | |
2220 | } | |
2221 | } | |
2222 | } | |
2223 | \f | |
2224 | /* Master parsing procedure for first-pass reading of file symbols | |
2225 | into a partial_symtab. */ | |
2226 | ||
2227 | static void | |
fba45db2 | 2228 | parse_partial_symbols (struct objfile *objfile) |
c906108c SS |
2229 | { |
2230 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
2231 | const bfd_size_type external_rfd_size = debug_swap->external_rfd_size; | |
2232 | const bfd_size_type external_ext_size = debug_swap->external_ext_size; | |
507f3c78 KB |
2233 | void (*const swap_ext_in) (bfd *, PTR, EXTR *) = debug_swap->swap_ext_in; |
2234 | void (*const swap_sym_in) (bfd *, PTR, SYMR *) = debug_swap->swap_sym_in; | |
2235 | void (*const swap_rfd_in) (bfd *, PTR, RFDT *) = debug_swap->swap_rfd_in; | |
c906108c SS |
2236 | int f_idx, s_idx; |
2237 | HDRR *hdr = &debug_info->symbolic_header; | |
2238 | /* Running pointers */ | |
2239 | FDR *fh; | |
2240 | char *ext_out; | |
2241 | char *ext_out_end; | |
2242 | EXTR *ext_block; | |
2243 | register EXTR *ext_in; | |
2244 | EXTR *ext_in_end; | |
2245 | SYMR sh; | |
2246 | struct partial_symtab *pst; | |
2247 | int textlow_not_set = 1; | |
2248 | int past_first_source_file = 0; | |
2249 | ||
2250 | /* List of current psymtab's include files */ | |
2251 | char **psymtab_include_list; | |
2252 | int includes_allocated; | |
2253 | int includes_used; | |
2254 | EXTR *extern_tab; | |
2255 | struct pst_map *fdr_to_pst; | |
2256 | /* Index within current psymtab dependency list */ | |
2257 | struct partial_symtab **dependency_list; | |
2258 | int dependencies_used, dependencies_allocated; | |
2259 | struct cleanup *old_chain; | |
2260 | char *name; | |
2261 | enum language prev_language; | |
2262 | asection *text_sect; | |
2263 | int relocatable = 0; | |
2264 | ||
2265 | /* Irix 5.2 shared libraries have a fh->adr field of zero, but | |
2266 | the shared libraries are prelinked at a high memory address. | |
2267 | We have to adjust the start address of the object file for this case, | |
2268 | by setting it to the start address of the first procedure in the file. | |
2269 | But we should do no adjustments if we are debugging a .o file, where | |
2270 | the text section (and fh->adr) really starts at zero. */ | |
2271 | text_sect = bfd_get_section_by_name (cur_bfd, ".text"); | |
2272 | if (text_sect != NULL | |
2273 | && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC)) | |
2274 | relocatable = 1; | |
2275 | ||
2276 | extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack, | |
2277 | sizeof (EXTR) * hdr->iextMax); | |
2278 | ||
2279 | includes_allocated = 30; | |
2280 | includes_used = 0; | |
2281 | psymtab_include_list = (char **) alloca (includes_allocated * | |
2282 | sizeof (char *)); | |
2283 | next_symbol_text_func = mdebug_next_symbol_text; | |
2284 | ||
2285 | dependencies_allocated = 30; | |
2286 | dependencies_used = 0; | |
2287 | dependency_list = | |
2288 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2289 | sizeof (struct partial_symtab *)); | |
2290 | ||
2291 | last_source_file = NULL; | |
2292 | ||
2293 | /* | |
2294 | * Big plan: | |
2295 | * | |
2296 | * Only parse the Local and External symbols, and the Relative FDR. | |
2297 | * Fixup enough of the loader symtab to be able to use it. | |
2298 | * Allocate space only for the file's portions we need to | |
2299 | * look at. (XXX) | |
2300 | */ | |
2301 | ||
2302 | max_gdbinfo = 0; | |
2303 | max_glevel = MIN_GLEVEL; | |
2304 | ||
2305 | /* Allocate the map FDR -> PST. | |
2306 | Minor hack: -O3 images might claim some global data belongs | |
2307 | to FDR -1. We`ll go along with that */ | |
2308 | fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst); | |
b8c9b27d | 2309 | old_chain = make_cleanup (xfree, fdr_to_pst); |
c906108c SS |
2310 | fdr_to_pst++; |
2311 | { | |
d4f3574e | 2312 | struct partial_symtab *pst = new_psymtab ("", objfile); |
c906108c SS |
2313 | fdr_to_pst[-1].pst = pst; |
2314 | FDR_IDX (pst) = -1; | |
2315 | } | |
2316 | ||
2317 | /* Allocate the global pending list. */ | |
2318 | pending_list = | |
2319 | ((struct mdebug_pending **) | |
2320 | obstack_alloc (&objfile->psymbol_obstack, | |
2321 | hdr->ifdMax * sizeof (struct mdebug_pending *))); | |
2322 | memset ((PTR) pending_list, 0, | |
2323 | hdr->ifdMax * sizeof (struct mdebug_pending *)); | |
2324 | ||
2325 | /* Pass 0 over external syms: swap them in. */ | |
2326 | ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR)); | |
b8c9b27d | 2327 | make_cleanup (xfree, ext_block); |
c906108c SS |
2328 | |
2329 | ext_out = (char *) debug_info->external_ext; | |
2330 | ext_out_end = ext_out + hdr->iextMax * external_ext_size; | |
2331 | ext_in = ext_block; | |
2332 | for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) | |
2333 | (*swap_ext_in) (cur_bfd, ext_out, ext_in); | |
2334 | ||
2335 | /* Pass 1 over external syms: Presize and partition the list */ | |
2336 | ext_in = ext_block; | |
2337 | ext_in_end = ext_in + hdr->iextMax; | |
2338 | for (; ext_in < ext_in_end; ext_in++) | |
2339 | { | |
2340 | /* See calls to complain below. */ | |
2341 | if (ext_in->ifd >= -1 | |
2342 | && ext_in->ifd < hdr->ifdMax | |
2343 | && ext_in->asym.iss >= 0 | |
2344 | && ext_in->asym.iss < hdr->issExtMax) | |
2345 | fdr_to_pst[ext_in->ifd].n_globals++; | |
2346 | } | |
2347 | ||
2348 | /* Pass 1.5 over files: partition out global symbol space */ | |
2349 | s_idx = 0; | |
2350 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) | |
2351 | { | |
2352 | fdr_to_pst[f_idx].globals_offset = s_idx; | |
2353 | s_idx += fdr_to_pst[f_idx].n_globals; | |
2354 | fdr_to_pst[f_idx].n_globals = 0; | |
2355 | } | |
2356 | ||
2357 | /* ECOFF in ELF: | |
2358 | ||
2359 | For ECOFF in ELF, we skip the creation of the minimal symbols. | |
2360 | The ECOFF symbols should be a subset of the Elf symbols, and the | |
2361 | section information of the elf symbols will be more accurate. | |
2362 | FIXME! What about Irix 5's native linker? | |
2363 | ||
2364 | By default, Elf sections which don't exist in ECOFF | |
2365 | get put in ECOFF's absolute section by the gnu linker. | |
2366 | Since absolute sections don't get relocated, we | |
2367 | end up calculating an address different from that of | |
2368 | the symbol's minimal symbol (created earlier from the | |
2369 | Elf symtab). | |
2370 | ||
2371 | To fix this, either : | |
2372 | 1) don't create the duplicate symbol | |
c5aa993b JM |
2373 | (assumes ECOFF symtab is a subset of the ELF symtab; |
2374 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2375 | 2) create it, only if lookup for existing symbol in ELF's minimal |
c5aa993b JM |
2376 | symbols fails |
2377 | (inefficient; | |
2378 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2379 | 3) create it, but lookup ELF's minimal symbol and use it's section |
c5aa993b JM |
2380 | during relocation, then modify "uniqify" phase to merge and |
2381 | eliminate the duplicate symbol | |
2382 | (highly inefficient) | |
c906108c SS |
2383 | |
2384 | I've implemented #1 here... | |
2385 | Skip the creation of the minimal symbols based on the ECOFF | |
2386 | symbol table. */ | |
2387 | ||
c5aa993b JM |
2388 | /* Pass 2 over external syms: fill in external symbols */ |
2389 | ext_in = ext_block; | |
2390 | ext_in_end = ext_in + hdr->iextMax; | |
2391 | for (; ext_in < ext_in_end; ext_in++) | |
2392 | { | |
2393 | enum minimal_symbol_type ms_type = mst_text; | |
2394 | CORE_ADDR svalue = ext_in->asym.value; | |
c906108c | 2395 | |
c5aa993b JM |
2396 | /* The Irix 5 native tools seem to sometimes generate bogus |
2397 | external symbols. */ | |
2398 | if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax) | |
2399 | { | |
2400 | complain (&bad_ext_ifd_complaint, ext_in->ifd, hdr->ifdMax); | |
2401 | continue; | |
2402 | } | |
2403 | if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax) | |
2404 | { | |
2405 | complain (&bad_ext_iss_complaint, ext_in->asym.iss, | |
2406 | hdr->issExtMax); | |
2407 | continue; | |
2408 | } | |
c906108c | 2409 | |
c5aa993b JM |
2410 | extern_tab[fdr_to_pst[ext_in->ifd].globals_offset |
2411 | + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; | |
c906108c SS |
2412 | |
2413 | ||
c5aa993b JM |
2414 | if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil) |
2415 | continue; | |
c906108c | 2416 | |
c906108c | 2417 | |
c5aa993b JM |
2418 | /* Pass 3 over files, over local syms: fill in static symbols */ |
2419 | name = debug_info->ssext + ext_in->asym.iss; | |
2420 | ||
2421 | /* Process ECOFF Symbol Types and Storage Classes */ | |
2422 | switch (ext_in->asym.st) | |
2423 | { | |
2424 | case stProc: | |
2425 | /* Beginnning of Procedure */ | |
b8fbeb18 | 2426 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2427 | break; |
2428 | case stStaticProc: | |
2429 | /* Load time only static procs */ | |
2430 | ms_type = mst_file_text; | |
b8fbeb18 | 2431 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2432 | break; |
2433 | case stGlobal: | |
2434 | /* External symbol */ | |
2435 | if (SC_IS_COMMON (ext_in->asym.sc)) | |
2436 | { | |
2437 | /* The value of a common symbol is its size, not its address. | |
2438 | Ignore it. */ | |
c906108c | 2439 | continue; |
c5aa993b JM |
2440 | } |
2441 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2442 | { | |
2443 | ms_type = mst_data; | |
b8fbeb18 | 2444 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c5aa993b JM |
2445 | } |
2446 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2447 | { | |
2448 | ms_type = mst_bss; | |
b8fbeb18 | 2449 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c5aa993b JM |
2450 | } |
2451 | else | |
2452 | ms_type = mst_abs; | |
2453 | break; | |
2454 | case stLabel: | |
2455 | /* Label */ | |
2456 | if (SC_IS_TEXT (ext_in->asym.sc)) | |
2457 | { | |
2458 | ms_type = mst_file_text; | |
b8fbeb18 | 2459 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2460 | } |
2461 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2462 | { | |
2463 | ms_type = mst_file_data; | |
b8fbeb18 | 2464 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c5aa993b JM |
2465 | } |
2466 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2467 | { | |
2468 | ms_type = mst_file_bss; | |
b8fbeb18 | 2469 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c5aa993b JM |
2470 | } |
2471 | else | |
2472 | ms_type = mst_abs; | |
2473 | break; | |
2474 | case stLocal: | |
2475 | case stNil: | |
2476 | /* The alpha has the section start addresses in stLocal symbols | |
2477 | whose name starts with a `.'. Skip those but complain for all | |
2478 | other stLocal symbols. | |
2479 | Irix6 puts the section start addresses in stNil symbols, skip | |
2480 | those too. */ | |
2481 | if (name[0] == '.') | |
2482 | continue; | |
2483 | /* Fall through. */ | |
2484 | default: | |
2485 | ms_type = mst_unknown; | |
2486 | complain (&unknown_ext_complaint, name); | |
2487 | } | |
2488 | if (!ECOFF_IN_ELF (cur_bfd)) | |
2489 | prim_record_minimal_symbol (name, svalue, ms_type, objfile); | |
2490 | } | |
c906108c SS |
2491 | |
2492 | /* Pass 3 over files, over local syms: fill in static symbols */ | |
2493 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) | |
2494 | { | |
2495 | struct partial_symtab *save_pst; | |
2496 | EXTR *ext_ptr; | |
2497 | CORE_ADDR textlow; | |
2498 | ||
2499 | cur_fdr = fh = debug_info->fdr + f_idx; | |
2500 | ||
2501 | if (fh->csym == 0) | |
2502 | { | |
2503 | fdr_to_pst[f_idx].pst = NULL; | |
2504 | continue; | |
2505 | } | |
2506 | ||
2507 | /* Determine the start address for this object file from the | |
c5aa993b | 2508 | file header and relocate it, except for Irix 5.2 zero fh->adr. */ |
c906108c SS |
2509 | if (fh->cpd) |
2510 | { | |
2511 | textlow = fh->adr; | |
2512 | if (relocatable || textlow != 0) | |
b8fbeb18 | 2513 | textlow += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2514 | } |
2515 | else | |
2516 | textlow = 0; | |
d4f3574e | 2517 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
c906108c SS |
2518 | fdr_name (fh), |
2519 | textlow, | |
2520 | objfile->global_psymbols.next, | |
2521 | objfile->static_psymbols.next); | |
2522 | pst->read_symtab_private = ((char *) | |
2523 | obstack_alloc (&objfile->psymbol_obstack, | |
2524 | sizeof (struct symloc))); | |
2525 | memset ((PTR) pst->read_symtab_private, 0, sizeof (struct symloc)); | |
2526 | ||
2527 | save_pst = pst; | |
3973eadd JB |
2528 | TEXTLOW (pst) = pst->textlow; |
2529 | TEXTHIGH (pst) = pst->texthigh; | |
c906108c SS |
2530 | FDR_IDX (pst) = f_idx; |
2531 | CUR_BFD (pst) = cur_bfd; | |
2532 | DEBUG_SWAP (pst) = debug_swap; | |
2533 | DEBUG_INFO (pst) = debug_info; | |
2534 | PENDING_LIST (pst) = pending_list; | |
2535 | ||
2536 | /* The way to turn this into a symtab is to call... */ | |
2537 | pst->read_symtab = mdebug_psymtab_to_symtab; | |
2538 | ||
2539 | /* Set up language for the pst. | |
2540 | The language from the FDR is used if it is unambigious (e.g. cfront | |
c5aa993b JM |
2541 | with native cc and g++ will set the language to C). |
2542 | Otherwise we have to deduce the language from the filename. | |
2543 | Native ecoff has every header file in a separate FDR, so | |
2544 | deduce_language_from_filename will return language_unknown for | |
2545 | a header file, which is not what we want. | |
2546 | But the FDRs for the header files are after the FDR for the source | |
2547 | file, so we can assign the language of the source file to the | |
2548 | following header files. Then we save the language in the private | |
2549 | pst data so that we can reuse it when building symtabs. */ | |
c906108c SS |
2550 | prev_language = psymtab_language; |
2551 | ||
2552 | switch (fh->lang) | |
2553 | { | |
2554 | case langCplusplusV2: | |
2555 | psymtab_language = language_cplus; | |
2556 | break; | |
2557 | default: | |
2558 | psymtab_language = deduce_language_from_filename (fdr_name (fh)); | |
2559 | break; | |
2560 | } | |
2561 | if (psymtab_language == language_unknown) | |
2562 | psymtab_language = prev_language; | |
2563 | PST_PRIVATE (pst)->pst_language = psymtab_language; | |
2564 | ||
3973eadd | 2565 | TEXTHIGH (pst) = TEXTLOW (pst); |
c906108c SS |
2566 | |
2567 | /* For stabs-in-ecoff files, the second symbol must be @stab. | |
c5aa993b JM |
2568 | This symbol is emitted by mips-tfile to signal that the |
2569 | current object file uses encapsulated stabs instead of mips | |
2570 | ecoff for local symbols. (It is the second symbol because | |
2571 | the first symbol is the stFile used to signal the start of a | |
2572 | file). */ | |
c906108c SS |
2573 | processing_gcc_compilation = 0; |
2574 | if (fh->csym >= 2) | |
2575 | { | |
2576 | (*swap_sym_in) (cur_bfd, | |
2577 | ((char *) debug_info->external_sym | |
2578 | + (fh->isymBase + 1) * external_sym_size), | |
2579 | &sh); | |
2580 | if (STREQ (debug_info->ss + fh->issBase + sh.iss, stabs_symbol)) | |
2581 | processing_gcc_compilation = 2; | |
2582 | } | |
2583 | ||
2584 | if (processing_gcc_compilation != 0) | |
2585 | { | |
2586 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
2587 | { | |
2588 | int type_code; | |
2589 | char *namestring; | |
2590 | ||
2591 | (*swap_sym_in) (cur_bfd, | |
2592 | (((char *) debug_info->external_sym) | |
c5aa993b | 2593 | + (fh->isymBase + cur_sdx) * external_sym_size), |
c906108c SS |
2594 | &sh); |
2595 | type_code = ECOFF_UNMARK_STAB (sh.index); | |
2596 | if (!ECOFF_IS_STAB (&sh)) | |
2597 | { | |
2598 | if (sh.st == stProc || sh.st == stStaticProc) | |
2599 | { | |
2600 | CORE_ADDR procaddr; | |
2601 | long isym; | |
c5aa993b | 2602 | |
b8fbeb18 | 2603 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2604 | if (sh.st == stStaticProc) |
2605 | { | |
2606 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
2607 | prim_record_minimal_symbol_and_info (namestring, | |
2608 | sh.value, | |
2609 | mst_file_text, | |
2610 | NULL, | |
b8fbeb18 | 2611 | SECT_OFF_TEXT (objfile), |
c906108c SS |
2612 | NULL, |
2613 | objfile); | |
2614 | } | |
2615 | procaddr = sh.value; | |
2616 | ||
2617 | isym = AUX_GET_ISYM (fh->fBigendian, | |
2618 | (debug_info->external_aux | |
2619 | + fh->iauxBase | |
2620 | + sh.index)); | |
2621 | (*swap_sym_in) (cur_bfd, | |
2622 | ((char *) debug_info->external_sym | |
2623 | + ((fh->isymBase + isym - 1) | |
2624 | * external_sym_size)), | |
2625 | &sh); | |
2626 | if (sh.st == stEnd) | |
2627 | { | |
2628 | CORE_ADDR high = procaddr + sh.value; | |
2629 | ||
c5aa993b | 2630 | /* Kludge for Irix 5.2 zero fh->adr. */ |
c906108c | 2631 | if (!relocatable |
3973eadd JB |
2632 | && (TEXTLOW (pst) == 0 || procaddr < TEXTLOW (pst))) |
2633 | TEXTLOW (pst) = procaddr; | |
2634 | if (high > TEXTHIGH (pst)) | |
2635 | TEXTHIGH (pst) = high; | |
c906108c SS |
2636 | } |
2637 | } | |
2638 | else if (sh.st == stStatic) | |
2639 | { | |
2640 | switch (sh.sc) | |
2641 | { | |
2642 | case scUndefined: | |
2643 | case scSUndefined: | |
2644 | case scNil: | |
2645 | case scAbs: | |
2646 | break; | |
2647 | ||
2648 | case scData: | |
2649 | case scSData: | |
2650 | case scRData: | |
2651 | case scPData: | |
2652 | case scXData: | |
2653 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
b8fbeb18 | 2654 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
2655 | prim_record_minimal_symbol_and_info (namestring, |
2656 | sh.value, | |
2657 | mst_file_data, | |
2658 | NULL, | |
b8fbeb18 | 2659 | SECT_OFF_DATA (objfile), |
c906108c SS |
2660 | NULL, |
2661 | objfile); | |
2662 | break; | |
2663 | ||
2664 | default: | |
2665 | /* FIXME! Shouldn't this use cases for bss, | |
2666 | then have the default be abs? */ | |
2667 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
b8fbeb18 | 2668 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
2669 | prim_record_minimal_symbol_and_info (namestring, |
2670 | sh.value, | |
2671 | mst_file_bss, | |
2672 | NULL, | |
b8fbeb18 | 2673 | SECT_OFF_BSS (objfile), |
c906108c SS |
2674 | NULL, |
2675 | objfile); | |
2676 | break; | |
2677 | } | |
2678 | } | |
2679 | continue; | |
2680 | } | |
2681 | /* Handle stabs continuation */ | |
2682 | { | |
2683 | char *stabstring = debug_info->ss + fh->issBase + sh.iss; | |
2684 | int len = strlen (stabstring); | |
c5aa993b | 2685 | while (stabstring[len - 1] == '\\') |
c906108c SS |
2686 | { |
2687 | SYMR sh2; | |
2688 | char *stabstring1 = stabstring; | |
2689 | char *stabstring2; | |
2690 | int len2; | |
2691 | ||
2692 | /* Ignore continuation char from 1st string */ | |
2693 | len--; | |
2694 | ||
2695 | /* Read next stabstring */ | |
2696 | cur_sdx++; | |
2697 | (*swap_sym_in) (cur_bfd, | |
2698 | (((char *) debug_info->external_sym) | |
c5aa993b | 2699 | + (fh->isymBase + cur_sdx) |
c906108c SS |
2700 | * external_sym_size), |
2701 | &sh2); | |
2702 | stabstring2 = debug_info->ss + fh->issBase + sh2.iss; | |
2703 | len2 = strlen (stabstring2); | |
2704 | ||
2705 | /* Concatinate stabstring2 with stabstring1 */ | |
2706 | if (stabstring | |
c5aa993b | 2707 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
c906108c SS |
2708 | stabstring = xrealloc (stabstring, len + len2 + 1); |
2709 | else | |
2710 | stabstring = xmalloc (len + len2 + 1); | |
2711 | strcpy (stabstring, stabstring1); | |
2712 | strcpy (stabstring + len, stabstring2); | |
2713 | len += len2; | |
2714 | } | |
2715 | ||
d3119d1e EZ |
2716 | switch (type_code) |
2717 | { | |
2718 | static struct complaint function_outside_compilation_unit = { | |
2719 | "function `%s' appears to be defined outside of all compilation units", 0, 0 | |
2720 | }; | |
2721 | char *p; | |
2722 | /* | |
2723 | * Standard, external, non-debugger, symbols | |
2724 | */ | |
2725 | ||
2726 | case N_TEXT | N_EXT: | |
2727 | case N_NBTEXT | N_EXT: | |
2728 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2729 | goto record_it; | |
2730 | ||
2731 | case N_DATA | N_EXT: | |
2732 | case N_NBDATA | N_EXT: | |
2733 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2734 | goto record_it; | |
2735 | ||
2736 | case N_BSS: | |
2737 | case N_BSS | N_EXT: | |
2738 | case N_NBBSS | N_EXT: | |
2739 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
2740 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); | |
2741 | goto record_it; | |
2742 | ||
2743 | case N_ABS | N_EXT: | |
2744 | record_it: | |
2745 | continue; | |
2746 | ||
2747 | /* Standard, local, non-debugger, symbols */ | |
2748 | ||
2749 | case N_NBTEXT: | |
2750 | ||
2751 | /* We need to be able to deal with both N_FN or N_TEXT, | |
2752 | because we have no way of knowing whether the sys-supplied ld | |
2753 | or GNU ld was used to make the executable. Sequents throw | |
2754 | in another wrinkle -- they renumbered N_FN. */ | |
2755 | ||
2756 | case N_FN: | |
2757 | case N_FN_SEQ: | |
2758 | case N_TEXT: | |
2759 | continue; | |
2760 | ||
2761 | case N_DATA: | |
2762 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2763 | goto record_it; | |
2764 | ||
2765 | case N_UNDF | N_EXT: | |
2766 | continue; /* Just undefined, not COMMON */ | |
2767 | ||
2768 | case N_UNDF: | |
2769 | continue; | |
2770 | ||
2771 | /* Lots of symbol types we can just ignore. */ | |
2772 | ||
2773 | case N_ABS: | |
2774 | case N_NBDATA: | |
2775 | case N_NBBSS: | |
2776 | continue; | |
2777 | ||
2778 | /* Keep going . . . */ | |
2779 | ||
2780 | /* | |
2781 | * Special symbol types for GNU | |
2782 | */ | |
2783 | case N_INDR: | |
2784 | case N_INDR | N_EXT: | |
2785 | case N_SETA: | |
2786 | case N_SETA | N_EXT: | |
2787 | case N_SETT: | |
2788 | case N_SETT | N_EXT: | |
2789 | case N_SETD: | |
2790 | case N_SETD | N_EXT: | |
2791 | case N_SETB: | |
2792 | case N_SETB | N_EXT: | |
2793 | case N_SETV: | |
2794 | continue; | |
2795 | ||
2796 | /* | |
2797 | * Debugger symbols | |
2798 | */ | |
2799 | ||
2800 | case N_SO: | |
2801 | { | |
2802 | CORE_ADDR valu; | |
2803 | static int prev_so_symnum = -10; | |
2804 | static int first_so_symnum; | |
2805 | char *p; | |
2806 | int prev_textlow_not_set; | |
2807 | ||
2808 | valu = sh.value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2809 | ||
2810 | prev_textlow_not_set = textlow_not_set; | |
2811 | ||
2812 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
2813 | /* A zero value is probably an indication for the SunPRO 3.0 | |
2814 | compiler. end_psymtab explicitly tests for zero, so | |
2815 | don't relocate it. */ | |
2816 | ||
2817 | if (sh.value == 0) | |
2818 | { | |
2819 | textlow_not_set = 1; | |
2820 | valu = 0; | |
2821 | } | |
2822 | else | |
2823 | textlow_not_set = 0; | |
2824 | #else | |
2825 | textlow_not_set = 0; | |
2826 | #endif | |
2827 | past_first_source_file = 1; | |
2828 | ||
2829 | if (prev_so_symnum != symnum - 1) | |
2830 | { /* Here if prev stab wasn't N_SO */ | |
2831 | first_so_symnum = symnum; | |
2832 | ||
2833 | if (pst) | |
2834 | { | |
2835 | pst = (struct partial_symtab *) 0; | |
2836 | includes_used = 0; | |
2837 | dependencies_used = 0; | |
2838 | } | |
2839 | } | |
2840 | ||
2841 | prev_so_symnum = symnum; | |
c906108c | 2842 | |
d3119d1e EZ |
2843 | /* End the current partial symtab and start a new one */ |
2844 | ||
2845 | /* SET_NAMESTRING ();*/ | |
2846 | namestring = stabstring; | |
2847 | ||
2848 | /* Null name means end of .o file. Don't start a new one. */ | |
2849 | if (*namestring == '\000') | |
2850 | continue; | |
2851 | ||
2852 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
2853 | The first one is a directory name; the second the file name. | |
2854 | If pst exists, is empty, and has a filename ending in '/', | |
2855 | we assume the previous N_SO was a directory name. */ | |
2856 | ||
2857 | p = strrchr (namestring, '/'); | |
2858 | if (p && *(p + 1) == '\000') | |
2859 | continue; /* Simply ignore directory name SOs */ | |
2860 | ||
2861 | /* Some other compilers (C++ ones in particular) emit useless | |
2862 | SOs for non-existant .c files. We ignore all subsequent SOs that | |
2863 | immediately follow the first. */ | |
2864 | ||
2865 | if (!pst) | |
2866 | pst = save_pst; | |
2867 | continue; | |
2868 | } | |
2869 | ||
2870 | case N_BINCL: | |
2871 | continue; | |
2872 | ||
2873 | case N_SOL: | |
2874 | { | |
2875 | enum language tmp_language; | |
2876 | /* Mark down an include file in the current psymtab */ | |
2877 | ||
2878 | /* SET_NAMESTRING ();*/ | |
2879 | namestring = stabstring; | |
2880 | ||
2881 | tmp_language = deduce_language_from_filename (namestring); | |
2882 | ||
2883 | /* Only change the psymtab's language if we've learned | |
2884 | something useful (eg. tmp_language is not language_unknown). | |
2885 | In addition, to match what start_subfile does, never change | |
2886 | from C++ to C. */ | |
2887 | if (tmp_language != language_unknown | |
2888 | && (tmp_language != language_c | |
2889 | || psymtab_language != language_cplus)) | |
2890 | psymtab_language = tmp_language; | |
2891 | ||
2892 | /* In C++, one may expect the same filename to come round many | |
2893 | times, when code is coming alternately from the main file | |
2894 | and from inline functions in other files. So I check to see | |
2895 | if this is a file we've seen before -- either the main | |
2896 | source file, or a previously included file. | |
2897 | ||
2898 | This seems to be a lot of time to be spending on N_SOL, but | |
2899 | things like "break c-exp.y:435" need to work (I | |
2900 | suppose the psymtab_include_list could be hashed or put | |
2901 | in a binary tree, if profiling shows this is a major hog). */ | |
2902 | if (pst && STREQ (namestring, pst->filename)) | |
2903 | continue; | |
2904 | { | |
2905 | register int i; | |
2906 | for (i = 0; i < includes_used; i++) | |
2907 | if (STREQ (namestring, psymtab_include_list[i])) | |
2908 | { | |
2909 | i = -1; | |
2910 | break; | |
2911 | } | |
2912 | if (i == -1) | |
2913 | continue; | |
2914 | } | |
2915 | ||
2916 | psymtab_include_list[includes_used++] = namestring; | |
2917 | if (includes_used >= includes_allocated) | |
2918 | { | |
2919 | char **orig = psymtab_include_list; | |
2920 | ||
2921 | psymtab_include_list = (char **) | |
2922 | alloca ((includes_allocated *= 2) * | |
2923 | sizeof (char *)); | |
2924 | memcpy ((PTR) psymtab_include_list, (PTR) orig, | |
2925 | includes_used * sizeof (char *)); | |
2926 | } | |
2927 | continue; | |
2928 | } | |
2929 | case N_LSYM: /* Typedef or automatic variable. */ | |
2930 | case N_STSYM: /* Data seg var -- static */ | |
2931 | case N_LCSYM: /* BSS " */ | |
2932 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
2933 | case N_NBSTS: /* Gould nobase. */ | |
2934 | case N_NBLCS: /* symbols. */ | |
2935 | case N_FUN: | |
2936 | case N_GSYM: /* Global (extern) variable; can be | |
2937 | data or bss (sigh FIXME). */ | |
2938 | ||
2939 | /* Following may probably be ignored; I'll leave them here | |
2940 | for now (until I do Pascal and Modula 2 extensions). */ | |
2941 | ||
2942 | case N_PC: /* I may or may not need this; I | |
2943 | suspect not. */ | |
2944 | case N_M2C: /* I suspect that I can ignore this here. */ | |
2945 | case N_SCOPE: /* Same. */ | |
2946 | ||
2947 | /* SET_NAMESTRING ();*/ | |
2948 | namestring = stabstring; | |
2949 | p = (char *) strchr (namestring, ':'); | |
2950 | if (!p) | |
2951 | continue; /* Not a debugging symbol. */ | |
2952 | ||
2953 | ||
2954 | ||
2955 | /* Main processing section for debugging symbols which | |
2956 | the initial read through the symbol tables needs to worry | |
2957 | about. If we reach this point, the symbol which we are | |
2958 | considering is definitely one we are interested in. | |
2959 | p must also contain the (valid) index into the namestring | |
2960 | which indicates the debugging type symbol. */ | |
2961 | ||
2962 | switch (p[1]) | |
2963 | { | |
2964 | case 'S': | |
2965 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2966 | #ifdef STATIC_TRANSFORM_NAME | |
2967 | namestring = STATIC_TRANSFORM_NAME (namestring); | |
2968 | #endif | |
2969 | add_psymbol_to_list (namestring, p - namestring, | |
2970 | VAR_NAMESPACE, LOC_STATIC, | |
2971 | &objfile->static_psymbols, | |
2972 | 0, sh.value, | |
2973 | psymtab_language, objfile); | |
2974 | continue; | |
2975 | case 'G': | |
2976 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2977 | /* The addresses in these entries are reported to be | |
2978 | wrong. See the code that reads 'G's for symtabs. */ | |
2979 | add_psymbol_to_list (namestring, p - namestring, | |
2980 | VAR_NAMESPACE, LOC_STATIC, | |
2981 | &objfile->global_psymbols, | |
2982 | 0, sh.value, | |
2983 | psymtab_language, objfile); | |
2984 | continue; | |
2985 | ||
2986 | case 'T': | |
2987 | /* When a 'T' entry is defining an anonymous enum, it | |
2988 | may have a name which is the empty string, or a | |
2989 | single space. Since they're not really defining a | |
2990 | symbol, those shouldn't go in the partial symbol | |
2991 | table. We do pick up the elements of such enums at | |
2992 | 'check_enum:', below. */ | |
2993 | if (p >= namestring + 2 | |
2994 | || (p == namestring + 1 | |
2995 | && namestring[0] != ' ')) | |
2996 | { | |
2997 | add_psymbol_to_list (namestring, p - namestring, | |
2998 | STRUCT_NAMESPACE, LOC_TYPEDEF, | |
2999 | &objfile->static_psymbols, | |
3000 | sh.value, 0, | |
3001 | psymtab_language, objfile); | |
3002 | if (p[2] == 't') | |
3003 | { | |
3004 | /* Also a typedef with the same name. */ | |
3005 | add_psymbol_to_list (namestring, p - namestring, | |
3006 | VAR_NAMESPACE, LOC_TYPEDEF, | |
3007 | &objfile->static_psymbols, | |
3008 | sh.value, 0, | |
3009 | psymtab_language, objfile); | |
3010 | p += 1; | |
3011 | } | |
3012 | /* The semantics of C++ state that "struct foo { ... }" | |
3013 | also defines a typedef for "foo". Unfortuantely, cfront | |
3014 | never makes the typedef when translating from C++ to C. | |
3015 | We make the typedef here so that "ptype foo" works as | |
3016 | expected for cfront translated code. */ | |
3017 | else if (psymtab_language == language_cplus) | |
3018 | { | |
3019 | /* Also a typedef with the same name. */ | |
3020 | add_psymbol_to_list (namestring, p - namestring, | |
3021 | VAR_NAMESPACE, LOC_TYPEDEF, | |
3022 | &objfile->static_psymbols, | |
3023 | sh.value, 0, | |
3024 | psymtab_language, objfile); | |
3025 | } | |
3026 | } | |
3027 | goto check_enum; | |
3028 | case 't': | |
3029 | if (p != namestring) /* a name is there, not just :T... */ | |
3030 | { | |
3031 | add_psymbol_to_list (namestring, p - namestring, | |
3032 | VAR_NAMESPACE, LOC_TYPEDEF, | |
3033 | &objfile->static_psymbols, | |
3034 | sh.value, 0, | |
3035 | psymtab_language, objfile); | |
3036 | } | |
3037 | check_enum: | |
3038 | /* If this is an enumerated type, we need to | |
3039 | add all the enum constants to the partial symbol | |
3040 | table. This does not cover enums without names, e.g. | |
3041 | "enum {a, b} c;" in C, but fortunately those are | |
3042 | rare. There is no way for GDB to find those from the | |
3043 | enum type without spending too much time on it. Thus | |
3044 | to solve this problem, the compiler needs to put out the | |
3045 | enum in a nameless type. GCC2 does this. */ | |
3046 | ||
3047 | /* We are looking for something of the form | |
3048 | <name> ":" ("t" | "T") [<number> "="] "e" | |
3049 | {<constant> ":" <value> ","} ";". */ | |
3050 | ||
3051 | /* Skip over the colon and the 't' or 'T'. */ | |
3052 | p += 2; | |
3053 | /* This type may be given a number. Also, numbers can come | |
3054 | in pairs like (0,26). Skip over it. */ | |
3055 | while ((*p >= '0' && *p <= '9') | |
3056 | || *p == '(' || *p == ',' || *p == ')' | |
3057 | || *p == '=') | |
3058 | p++; | |
3059 | ||
3060 | if (*p++ == 'e') | |
3061 | { | |
3062 | /* The aix4 compiler emits extra crud before the members. */ | |
3063 | if (*p == '-') | |
3064 | { | |
3065 | /* Skip over the type (?). */ | |
3066 | while (*p != ':') | |
3067 | p++; | |
3068 | ||
3069 | /* Skip over the colon. */ | |
3070 | p++; | |
3071 | } | |
3072 | ||
3073 | /* We have found an enumerated type. */ | |
3074 | /* According to comments in read_enum_type | |
3075 | a comma could end it instead of a semicolon. | |
3076 | I don't know where that happens. | |
3077 | Accept either. */ | |
3078 | while (*p && *p != ';' && *p != ',') | |
3079 | { | |
3080 | char *q; | |
3081 | ||
3082 | /* Check for and handle cretinous dbx symbol name | |
3083 | continuation! */ | |
3084 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
3085 | p = next_symbol_text (objfile); | |
3086 | ||
3087 | /* Point to the character after the name | |
3088 | of the enum constant. */ | |
3089 | for (q = p; *q && *q != ':'; q++) | |
3090 | ; | |
3091 | /* Note that the value doesn't matter for | |
3092 | enum constants in psymtabs, just in symtabs. */ | |
3093 | add_psymbol_to_list (p, q - p, | |
3094 | VAR_NAMESPACE, LOC_CONST, | |
3095 | &objfile->static_psymbols, 0, | |
3096 | 0, psymtab_language, objfile); | |
3097 | /* Point past the name. */ | |
3098 | p = q; | |
3099 | /* Skip over the value. */ | |
3100 | while (*p && *p != ',') | |
3101 | p++; | |
3102 | /* Advance past the comma. */ | |
3103 | if (*p) | |
3104 | p++; | |
3105 | } | |
3106 | } | |
3107 | continue; | |
3108 | case 'c': | |
3109 | /* Constant, e.g. from "const" in Pascal. */ | |
3110 | add_psymbol_to_list (namestring, p - namestring, | |
3111 | VAR_NAMESPACE, LOC_CONST, | |
3112 | &objfile->static_psymbols, sh.value, | |
3113 | 0, psymtab_language, objfile); | |
3114 | continue; | |
3115 | ||
3116 | case 'f': | |
3117 | if (! pst) | |
3118 | { | |
3119 | int name_len = p - namestring; | |
3120 | char *name = xmalloc (name_len + 1); | |
3121 | memcpy (name, namestring, name_len); | |
3122 | name[name_len] = '\0'; | |
3123 | complain (&function_outside_compilation_unit, name); | |
3124 | xfree (name); | |
3125 | } | |
3126 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3127 | add_psymbol_to_list (namestring, p - namestring, | |
3128 | VAR_NAMESPACE, LOC_BLOCK, | |
3129 | &objfile->static_psymbols, | |
3130 | 0, sh.value, | |
3131 | psymtab_language, objfile); | |
3132 | continue; | |
3133 | ||
3134 | /* Global functions were ignored here, but now they | |
3135 | are put into the global psymtab like one would expect. | |
3136 | They're also in the minimal symbol table. */ | |
3137 | case 'F': | |
3138 | if (! pst) | |
3139 | { | |
3140 | int name_len = p - namestring; | |
3141 | char *name = xmalloc (name_len + 1); | |
3142 | memcpy (name, namestring, name_len); | |
3143 | name[name_len] = '\0'; | |
3144 | complain (&function_outside_compilation_unit, name); | |
3145 | xfree (name); | |
3146 | } | |
3147 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3148 | add_psymbol_to_list (namestring, p - namestring, | |
3149 | VAR_NAMESPACE, LOC_BLOCK, | |
3150 | &objfile->global_psymbols, | |
3151 | 0, sh.value, | |
3152 | psymtab_language, objfile); | |
3153 | continue; | |
3154 | ||
3155 | /* Two things show up here (hopefully); static symbols of | |
3156 | local scope (static used inside braces) or extensions | |
3157 | of structure symbols. We can ignore both. */ | |
3158 | case 'V': | |
3159 | case '(': | |
3160 | case '0': | |
3161 | case '1': | |
3162 | case '2': | |
3163 | case '3': | |
3164 | case '4': | |
3165 | case '5': | |
3166 | case '6': | |
3167 | case '7': | |
3168 | case '8': | |
3169 | case '9': | |
3170 | case '-': | |
3171 | case '#': /* for symbol identification (used in live ranges) */ | |
3172 | /* added to support cfront stabs strings */ | |
3173 | case 'Z': /* for definition continuations */ | |
3174 | case 'P': /* for prototypes */ | |
3175 | continue; | |
3176 | ||
3177 | case ':': | |
3178 | /* It is a C++ nested symbol. We don't need to record it | |
3179 | (I don't think); if we try to look up foo::bar::baz, | |
3180 | then symbols for the symtab containing foo should get | |
3181 | read in, I think. */ | |
3182 | /* Someone says sun cc puts out symbols like | |
3183 | /foo/baz/maclib::/usr/local/bin/maclib, | |
3184 | which would get here with a symbol type of ':'. */ | |
3185 | continue; | |
3186 | ||
3187 | default: | |
3188 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
3189 | of a continued stab can show up here. The question is | |
3190 | whether they ever can mimic a normal stab--it would be | |
3191 | nice if not, since we certainly don't want to spend the | |
3192 | time searching to the end of every string looking for | |
3193 | a backslash. */ | |
3194 | ||
3195 | complain (&unknown_symchar_complaint, p[1]); | |
3196 | ||
3197 | /* Ignore it; perhaps it is an extension that we don't | |
3198 | know about. */ | |
3199 | continue; | |
3200 | } | |
3201 | ||
3202 | case N_EXCL: | |
3203 | continue; | |
3204 | ||
3205 | case N_ENDM: | |
3206 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
3207 | /* Solaris 2 end of module, finish current partial symbol table. | |
3208 | END_PSYMTAB will set TEXTHIGH (pst) to the proper value, which | |
3209 | is necessary if a module compiled without debugging info | |
3210 | follows this module. */ | |
3211 | if (pst) | |
3212 | { | |
3213 | pst = (struct partial_symtab *) 0; | |
3214 | includes_used = 0; | |
3215 | dependencies_used = 0; | |
3216 | } | |
3217 | #endif | |
3218 | continue; | |
3219 | ||
3220 | case N_RBRAC: | |
3221 | if (sh.value > TEXTHIGH (save_pst)) | |
3222 | TEXTHIGH (save_pst) = sh.value; | |
3223 | continue; | |
3224 | case N_EINCL: | |
3225 | case N_DSLINE: | |
3226 | case N_BSLINE: | |
3227 | case N_SSYM: /* Claim: Structure or union element. | |
3228 | Hopefully, I can ignore this. */ | |
3229 | case N_ENTRY: /* Alternate entry point; can ignore. */ | |
3230 | case N_MAIN: /* Can definitely ignore this. */ | |
3231 | case N_CATCH: /* These are GNU C++ extensions */ | |
3232 | case N_EHDECL: /* that can safely be ignored here. */ | |
3233 | case N_LENG: | |
3234 | case N_BCOMM: | |
3235 | case N_ECOMM: | |
3236 | case N_ECOML: | |
3237 | case N_FNAME: | |
3238 | case N_SLINE: | |
3239 | case N_RSYM: | |
3240 | case N_PSYM: | |
3241 | case N_LBRAC: | |
3242 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
3243 | case N_DEFD: /* GNU Modula-2 */ | |
3244 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
3245 | ||
3246 | case N_OBJ: /* useless types from Solaris */ | |
3247 | case N_OPT: | |
3248 | /* These symbols aren't interesting; don't worry about them */ | |
3249 | ||
3250 | continue; | |
3251 | ||
3252 | default: | |
3253 | /* If we haven't found it yet, ignore it. It's probably some | |
3254 | new type we don't know about yet. */ | |
3255 | complain (&unknown_symtype_complaint, | |
3256 | local_hex_string (type_code)); /*CUR_SYMBOL_TYPE*/ | |
3257 | continue; | |
3258 | } | |
c5aa993b | 3259 | if (stabstring |
c906108c | 3260 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
b8c9b27d | 3261 | xfree (stabstring); |
c906108c | 3262 | } |
c5aa993b | 3263 | /* end - Handle continuation */ |
c906108c SS |
3264 | } |
3265 | } | |
3266 | else | |
3267 | { | |
3268 | for (cur_sdx = 0; cur_sdx < fh->csym;) | |
3269 | { | |
3270 | char *name; | |
3271 | enum address_class class; | |
3272 | ||
3273 | (*swap_sym_in) (cur_bfd, | |
3274 | ((char *) debug_info->external_sym | |
3275 | + ((fh->isymBase + cur_sdx) | |
3276 | * external_sym_size)), | |
3277 | &sh); | |
3278 | ||
3279 | if (ECOFF_IS_STAB (&sh)) | |
3280 | { | |
3281 | cur_sdx++; | |
3282 | continue; | |
3283 | } | |
3284 | ||
3285 | /* Non absolute static symbols go into the minimal table. */ | |
c5aa993b | 3286 | if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil |
c906108c SS |
3287 | || (sh.index == indexNil |
3288 | && (sh.st != stStatic || sh.sc == scAbs))) | |
3289 | { | |
3290 | /* FIXME, premature? */ | |
3291 | cur_sdx++; | |
3292 | continue; | |
3293 | } | |
3294 | ||
3295 | name = debug_info->ss + fh->issBase + sh.iss; | |
3296 | ||
3297 | switch (sh.sc) | |
3298 | { | |
3299 | case scText: | |
3300 | case scRConst: | |
3301 | /* The value of a stEnd symbol is the displacement from the | |
3302 | corresponding start symbol value, do not relocate it. */ | |
3303 | if (sh.st != stEnd) | |
b8fbeb18 | 3304 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3305 | break; |
3306 | case scData: | |
3307 | case scSData: | |
3308 | case scRData: | |
3309 | case scPData: | |
3310 | case scXData: | |
b8fbeb18 | 3311 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3312 | break; |
3313 | case scBss: | |
3314 | case scSBss: | |
b8fbeb18 | 3315 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3316 | break; |
3317 | } | |
3318 | ||
3319 | switch (sh.st) | |
3320 | { | |
3321 | CORE_ADDR high; | |
3322 | CORE_ADDR procaddr; | |
3323 | int new_sdx; | |
3324 | ||
3325 | case stStaticProc: | |
3326 | prim_record_minimal_symbol_and_info (name, sh.value, | |
3327 | mst_file_text, NULL, | |
b8fbeb18 | 3328 | SECT_OFF_TEXT (objfile), NULL, |
c906108c SS |
3329 | objfile); |
3330 | ||
3331 | /* FALLTHROUGH */ | |
3332 | ||
3333 | case stProc: | |
3334 | /* Usually there is a local and a global stProc symbol | |
3335 | for a function. This means that the function name | |
3336 | has already been entered into the mimimal symbol table | |
3337 | while processing the global symbols in pass 2 above. | |
3338 | One notable exception is the PROGRAM name from | |
3339 | f77 compiled executables, it is only put out as | |
3340 | local stProc symbol, and a global MAIN__ stProc symbol | |
3341 | points to it. It doesn't matter though, as gdb is | |
3342 | still able to find the PROGRAM name via the partial | |
3343 | symbol table, and the MAIN__ symbol via the minimal | |
3344 | symbol table. */ | |
3345 | if (sh.st == stProc) | |
3346 | add_psymbol_to_list (name, strlen (name), | |
3347 | VAR_NAMESPACE, LOC_BLOCK, | |
3348 | &objfile->global_psymbols, | |
c5aa993b | 3349 | 0, sh.value, psymtab_language, objfile); |
c906108c SS |
3350 | else |
3351 | add_psymbol_to_list (name, strlen (name), | |
3352 | VAR_NAMESPACE, LOC_BLOCK, | |
3353 | &objfile->static_psymbols, | |
c5aa993b | 3354 | 0, sh.value, psymtab_language, objfile); |
c906108c SS |
3355 | |
3356 | /* Skip over procedure to next one. */ | |
3357 | if (sh.index >= hdr->iauxMax) | |
3358 | { | |
3359 | /* Should not happen, but does when cross-compiling | |
c5aa993b | 3360 | with the MIPS compiler. FIXME -- pull later. */ |
c906108c SS |
3361 | complain (&index_complaint, name); |
3362 | new_sdx = cur_sdx + 1; /* Don't skip at all */ | |
3363 | } | |
3364 | else | |
3365 | new_sdx = AUX_GET_ISYM (fh->fBigendian, | |
3366 | (debug_info->external_aux | |
3367 | + fh->iauxBase | |
3368 | + sh.index)); | |
3369 | procaddr = sh.value; | |
3370 | ||
3371 | if (new_sdx <= cur_sdx) | |
3372 | { | |
3373 | /* This should not happen either... FIXME. */ | |
3374 | complain (&aux_index_complaint, name); | |
3375 | new_sdx = cur_sdx + 1; /* Don't skip backward */ | |
3376 | } | |
3377 | ||
3378 | cur_sdx = new_sdx; | |
3379 | (*swap_sym_in) (cur_bfd, | |
3380 | ((char *) debug_info->external_sym | |
3381 | + ((fh->isymBase + cur_sdx - 1) | |
3382 | * external_sym_size)), | |
3383 | &sh); | |
3384 | if (sh.st != stEnd) | |
3385 | continue; | |
3386 | ||
3387 | /* Kludge for Irix 5.2 zero fh->adr. */ | |
3388 | if (!relocatable | |
3973eadd JB |
3389 | && (TEXTLOW (pst) == 0 || procaddr < TEXTLOW (pst))) |
3390 | TEXTLOW (pst) = procaddr; | |
c906108c SS |
3391 | |
3392 | high = procaddr + sh.value; | |
3973eadd JB |
3393 | if (high > TEXTHIGH (pst)) |
3394 | TEXTHIGH (pst) = high; | |
c906108c SS |
3395 | continue; |
3396 | ||
3397 | case stStatic: /* Variable */ | |
c5aa993b | 3398 | if (SC_IS_DATA (sh.sc)) |
c906108c SS |
3399 | prim_record_minimal_symbol_and_info (name, sh.value, |
3400 | mst_file_data, NULL, | |
b8fbeb18 | 3401 | SECT_OFF_DATA (objfile), |
c906108c SS |
3402 | NULL, |
3403 | objfile); | |
3404 | else | |
3405 | prim_record_minimal_symbol_and_info (name, sh.value, | |
3406 | mst_file_bss, NULL, | |
b8fbeb18 | 3407 | SECT_OFF_BSS (objfile), |
c906108c SS |
3408 | NULL, |
3409 | objfile); | |
3410 | class = LOC_STATIC; | |
3411 | break; | |
3412 | ||
c5aa993b | 3413 | case stIndirect: /* Irix5 forward declaration */ |
c906108c SS |
3414 | /* Skip forward declarations from Irix5 cc */ |
3415 | goto skip; | |
3416 | ||
c5aa993b | 3417 | case stTypedef: /* Typedef */ |
c906108c SS |
3418 | /* Skip typedefs for forward declarations and opaque |
3419 | structs from alpha and mips cc. */ | |
3420 | if (sh.iss == 0 || has_opaque_xref (fh, &sh)) | |
3421 | goto skip; | |
3422 | class = LOC_TYPEDEF; | |
3423 | break; | |
3424 | ||
3425 | case stConstant: /* Constant decl */ | |
3426 | class = LOC_CONST; | |
3427 | break; | |
3428 | ||
3429 | case stUnion: | |
3430 | case stStruct: | |
3431 | case stEnum: | |
c5aa993b | 3432 | case stBlock: /* { }, str, un, enum */ |
c906108c SS |
3433 | /* Do not create a partial symbol for cc unnamed aggregates |
3434 | and gcc empty aggregates. */ | |
3435 | if ((sh.sc == scInfo | |
c5aa993b | 3436 | || SC_IS_COMMON (sh.sc)) |
c906108c SS |
3437 | && sh.iss != 0 |
3438 | && sh.index != cur_sdx + 2) | |
3439 | { | |
3440 | add_psymbol_to_list (name, strlen (name), | |
3441 | STRUCT_NAMESPACE, LOC_TYPEDEF, | |
3442 | &objfile->static_psymbols, | |
3443 | 0, (CORE_ADDR) 0, | |
3444 | psymtab_language, objfile); | |
3445 | } | |
3446 | handle_psymbol_enumerators (objfile, fh, sh.st, sh.value); | |
3447 | ||
3448 | /* Skip over the block */ | |
3449 | new_sdx = sh.index; | |
3450 | if (new_sdx <= cur_sdx) | |
3451 | { | |
3452 | /* This happens with the Ultrix kernel. */ | |
3453 | complain (&block_index_complaint, name); | |
3454 | new_sdx = cur_sdx + 1; /* Don't skip backward */ | |
3455 | } | |
3456 | cur_sdx = new_sdx; | |
3457 | continue; | |
3458 | ||
3459 | case stFile: /* File headers */ | |
3460 | case stLabel: /* Labels */ | |
3461 | case stEnd: /* Ends of files */ | |
3462 | goto skip; | |
3463 | ||
3464 | case stLocal: /* Local variables */ | |
3465 | /* Normally these are skipped because we skip over | |
3466 | all blocks we see. However, these can occur | |
3467 | as visible symbols in a .h file that contains code. */ | |
3468 | goto skip; | |
3469 | ||
3470 | default: | |
3471 | /* Both complaints are valid: one gives symbol name, | |
3472 | the other the offending symbol type. */ | |
3473 | complain (&unknown_sym_complaint, name); | |
3474 | complain (&unknown_st_complaint, sh.st); | |
3475 | cur_sdx++; | |
3476 | continue; | |
3477 | } | |
3478 | /* Use this gdb symbol */ | |
3479 | add_psymbol_to_list (name, strlen (name), | |
3480 | VAR_NAMESPACE, class, | |
3481 | &objfile->static_psymbols, | |
3482 | 0, sh.value, psymtab_language, objfile); | |
3483 | skip: | |
3484 | cur_sdx++; /* Go to next file symbol */ | |
3485 | } | |
3486 | ||
3487 | /* Now do enter the external symbols. */ | |
3488 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; | |
3489 | cur_sdx = fdr_to_pst[f_idx].n_globals; | |
3490 | PST_PRIVATE (save_pst)->extern_count = cur_sdx; | |
3491 | PST_PRIVATE (save_pst)->extern_tab = ext_ptr; | |
3492 | for (; --cur_sdx >= 0; ext_ptr++) | |
3493 | { | |
3494 | enum address_class class; | |
3495 | SYMR *psh; | |
3496 | char *name; | |
3497 | CORE_ADDR svalue; | |
3498 | ||
3499 | if (ext_ptr->ifd != f_idx) | |
e1e9e218 | 3500 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
3501 | psh = &ext_ptr->asym; |
3502 | ||
3503 | /* Do not add undefined symbols to the partial symbol table. */ | |
c5aa993b | 3504 | if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil) |
c906108c SS |
3505 | continue; |
3506 | ||
3507 | svalue = psh->value; | |
3508 | switch (psh->sc) | |
3509 | { | |
3510 | case scText: | |
3511 | case scRConst: | |
b8fbeb18 | 3512 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3513 | break; |
3514 | case scData: | |
3515 | case scSData: | |
3516 | case scRData: | |
3517 | case scPData: | |
3518 | case scXData: | |
b8fbeb18 | 3519 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3520 | break; |
3521 | case scBss: | |
3522 | case scSBss: | |
b8fbeb18 | 3523 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3524 | break; |
3525 | } | |
3526 | ||
3527 | switch (psh->st) | |
3528 | { | |
3529 | case stNil: | |
3530 | /* These are generated for static symbols in .o files, | |
3531 | ignore them. */ | |
3532 | continue; | |
3533 | case stProc: | |
3534 | case stStaticProc: | |
3535 | /* External procedure symbols have been entered | |
3536 | into the minimal symbol table in pass 2 above. | |
3537 | Ignore them, as parse_external will ignore them too. */ | |
3538 | continue; | |
3539 | case stLabel: | |
3540 | class = LOC_LABEL; | |
3541 | break; | |
3542 | default: | |
3543 | complain (&unknown_ext_complaint, | |
3544 | debug_info->ssext + psh->iss); | |
3545 | /* Fall through, pretend it's global. */ | |
3546 | case stGlobal: | |
3547 | /* Global common symbols are resolved by the runtime loader, | |
3548 | ignore them. */ | |
c5aa993b | 3549 | if (SC_IS_COMMON (psh->sc)) |
c906108c SS |
3550 | continue; |
3551 | ||
3552 | class = LOC_STATIC; | |
3553 | break; | |
3554 | } | |
3555 | name = debug_info->ssext + psh->iss; | |
3556 | add_psymbol_to_list (name, strlen (name), | |
3557 | VAR_NAMESPACE, class, | |
3558 | &objfile->global_psymbols, | |
3559 | 0, svalue, | |
3560 | psymtab_language, objfile); | |
3561 | } | |
3562 | } | |
3563 | ||
3564 | /* Link pst to FDR. end_psymtab returns NULL if the psymtab was | |
c5aa993b | 3565 | empty and put on the free list. */ |
c906108c | 3566 | fdr_to_pst[f_idx].pst = end_psymtab (save_pst, |
c5aa993b | 3567 | psymtab_include_list, includes_used, |
3973eadd | 3568 | -1, TEXTHIGH (save_pst), |
c5aa993b | 3569 | dependency_list, dependencies_used, textlow_not_set); |
c906108c SS |
3570 | includes_used = 0; |
3571 | dependencies_used = 0; | |
3572 | ||
3973eadd JB |
3573 | if (objfile->ei.entry_point >= TEXTLOW (save_pst) && |
3574 | objfile->ei.entry_point < TEXTHIGH (save_pst)) | |
c906108c | 3575 | { |
3973eadd JB |
3576 | objfile->ei.entry_file_lowpc = TEXTLOW (save_pst); |
3577 | objfile->ei.entry_file_highpc = TEXTHIGH (save_pst); | |
c906108c SS |
3578 | } |
3579 | ||
3580 | /* The objfile has its functions reordered if this partial symbol | |
c5aa993b JM |
3581 | table overlaps any other partial symbol table. |
3582 | We cannot assume a reordered objfile if a partial symbol table | |
3583 | is contained within another partial symbol table, as partial symbol | |
3584 | tables for include files with executable code are contained | |
3585 | within the partial symbol table for the including source file, | |
3586 | and we do not want to flag the objfile reordered for these cases. | |
3587 | ||
3588 | This strategy works well for Irix-5.2 shared libraries, but we | |
3589 | might have to use a more elaborate (and slower) algorithm for | |
3590 | other cases. */ | |
c906108c SS |
3591 | save_pst = fdr_to_pst[f_idx].pst; |
3592 | if (save_pst != NULL | |
3973eadd | 3593 | && TEXTLOW (save_pst) != 0 |
c906108c SS |
3594 | && !(objfile->flags & OBJF_REORDERED)) |
3595 | { | |
3596 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
c5aa993b JM |
3597 | { |
3598 | if (save_pst != pst | |
3973eadd JB |
3599 | && TEXTLOW (save_pst) >= TEXTLOW (pst) |
3600 | && TEXTLOW (save_pst) < TEXTHIGH (pst) | |
3601 | && TEXTHIGH (save_pst) > TEXTHIGH (pst)) | |
c5aa993b JM |
3602 | { |
3603 | objfile->flags |= OBJF_REORDERED; | |
3604 | break; | |
3605 | } | |
3606 | } | |
c906108c SS |
3607 | } |
3608 | } | |
3609 | ||
3610 | /* Now scan the FDRs for dependencies */ | |
3611 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) | |
3612 | { | |
3613 | fh = f_idx + debug_info->fdr; | |
3614 | pst = fdr_to_pst[f_idx].pst; | |
3615 | ||
c5aa993b | 3616 | if (pst == (struct partial_symtab *) NULL) |
c906108c SS |
3617 | continue; |
3618 | ||
3619 | /* This should catch stabs-in-ecoff. */ | |
3620 | if (fh->crfd <= 1) | |
3621 | continue; | |
3622 | ||
3623 | /* Skip the first file indirect entry as it is a self dependency | |
c5aa993b | 3624 | for source files or a reverse .h -> .c dependency for header files. */ |
c906108c SS |
3625 | pst->number_of_dependencies = 0; |
3626 | pst->dependencies = | |
3627 | ((struct partial_symtab **) | |
3628 | obstack_alloc (&objfile->psymbol_obstack, | |
3629 | ((fh->crfd - 1) | |
3630 | * sizeof (struct partial_symtab *)))); | |
3631 | for (s_idx = 1; s_idx < fh->crfd; s_idx++) | |
3632 | { | |
3633 | RFDT rh; | |
3634 | ||
3635 | (*swap_rfd_in) (cur_bfd, | |
3636 | ((char *) debug_info->external_rfd | |
3637 | + (fh->rfdBase + s_idx) * external_rfd_size), | |
3638 | &rh); | |
3639 | if (rh < 0 || rh >= hdr->ifdMax) | |
3640 | { | |
3641 | complain (&bad_file_number_complaint, rh); | |
3642 | continue; | |
3643 | } | |
3644 | ||
3645 | /* Skip self dependencies of header files. */ | |
3646 | if (rh == f_idx) | |
3647 | continue; | |
3648 | ||
3649 | /* Do not add to dependeny list if psymtab was empty. */ | |
c5aa993b | 3650 | if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL) |
c906108c SS |
3651 | continue; |
3652 | pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst; | |
3653 | } | |
3654 | } | |
3655 | ||
3656 | /* Remove the dummy psymtab created for -O3 images above, if it is | |
3657 | still empty, to enable the detection of stripped executables. */ | |
3658 | if (objfile->psymtabs->next == NULL | |
3659 | && objfile->psymtabs->number_of_dependencies == 0 | |
3660 | && objfile->psymtabs->n_global_syms == 0 | |
3661 | && objfile->psymtabs->n_static_syms == 0) | |
3662 | objfile->psymtabs = NULL; | |
3663 | do_cleanups (old_chain); | |
3664 | } | |
3665 | ||
3666 | /* If the current psymbol has an enumerated type, we need to add | |
3667 | all the the enum constants to the partial symbol table. */ | |
3668 | ||
3669 | static void | |
fba45db2 KB |
3670 | handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype, |
3671 | CORE_ADDR svalue) | |
c906108c SS |
3672 | { |
3673 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
507f3c78 | 3674 | void (*const swap_sym_in) (bfd *, PTR, SYMR *) = debug_swap->swap_sym_in; |
c906108c | 3675 | char *ext_sym = ((char *) debug_info->external_sym |
c5aa993b | 3676 | + ((fh->isymBase + cur_sdx + 1) * external_sym_size)); |
c906108c SS |
3677 | SYMR sh; |
3678 | TIR tir; | |
3679 | ||
3680 | switch (stype) | |
3681 | { | |
3682 | case stEnum: | |
3683 | break; | |
3684 | ||
3685 | case stBlock: | |
3686 | /* It is an enumerated type if the next symbol entry is a stMember | |
c5aa993b JM |
3687 | and its auxiliary index is indexNil or its auxiliary entry |
3688 | is a plain btNil or btVoid. | |
3689 | Alpha cc -migrate enums are recognized by a zero index and | |
3690 | a zero symbol value. | |
3691 | DU 4.0 cc enums are recognized by a member type of btEnum without | |
3692 | qualifiers and a zero symbol value. */ | |
c906108c SS |
3693 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); |
3694 | if (sh.st != stMember) | |
3695 | return; | |
3696 | ||
3697 | if (sh.index == indexNil | |
3698 | || (sh.index == 0 && svalue == 0)) | |
3699 | break; | |
3700 | (*debug_swap->swap_tir_in) (fh->fBigendian, | |
3701 | &(debug_info->external_aux | |
3702 | + fh->iauxBase + sh.index)->a_ti, | |
3703 | &tir); | |
3704 | if ((tir.bt != btNil | |
3705 | && tir.bt != btVoid | |
3706 | && (tir.bt != btEnum || svalue != 0)) | |
3707 | || tir.tq0 != tqNil) | |
3708 | return; | |
3709 | break; | |
3710 | ||
3711 | default: | |
3712 | return; | |
3713 | } | |
3714 | ||
3715 | for (;;) | |
3716 | { | |
3717 | char *name; | |
3718 | ||
3719 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); | |
3720 | if (sh.st != stMember) | |
3721 | break; | |
3722 | name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
3723 | ||
3724 | /* Note that the value doesn't matter for enum constants | |
c5aa993b | 3725 | in psymtabs, just in symtabs. */ |
c906108c SS |
3726 | add_psymbol_to_list (name, strlen (name), |
3727 | VAR_NAMESPACE, LOC_CONST, | |
3728 | &objfile->static_psymbols, 0, | |
3729 | (CORE_ADDR) 0, psymtab_language, objfile); | |
3730 | ext_sym += external_sym_size; | |
3731 | } | |
3732 | } | |
3733 | ||
0e7e8d51 KB |
3734 | /* Get the next symbol. OBJFILE is unused. */ |
3735 | ||
c906108c | 3736 | static char * |
0e7e8d51 | 3737 | mdebug_next_symbol_text (struct objfile *objfile) |
c906108c SS |
3738 | { |
3739 | SYMR sh; | |
3740 | ||
3741 | cur_sdx++; | |
3742 | (*debug_swap->swap_sym_in) (cur_bfd, | |
3743 | ((char *) debug_info->external_sym | |
3744 | + ((cur_fdr->isymBase + cur_sdx) | |
3745 | * debug_swap->external_sym_size)), | |
3746 | &sh); | |
3747 | return debug_info->ss + cur_fdr->issBase + sh.iss; | |
3748 | } | |
3749 | ||
3750 | /* Ancillary function to psymtab_to_symtab(). Does all the work | |
3751 | for turning the partial symtab PST into a symtab, recurring | |
3752 | first on all dependent psymtabs. The argument FILENAME is | |
3753 | only passed so we can see in debug stack traces what file | |
3754 | is being read. | |
3755 | ||
3756 | This function has a split personality, based on whether the | |
3757 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. | |
3758 | The flow of control and even the memory allocation differs. FIXME. */ | |
3759 | ||
3760 | static void | |
fba45db2 | 3761 | psymtab_to_symtab_1 (struct partial_symtab *pst, char *filename) |
c906108c SS |
3762 | { |
3763 | bfd_size_type external_sym_size; | |
3764 | bfd_size_type external_pdr_size; | |
507f3c78 KB |
3765 | void (*swap_sym_in) (bfd *, PTR, SYMR *); |
3766 | void (*swap_pdr_in) (bfd *, PTR, PDR *); | |
c906108c | 3767 | int i; |
16db6055 | 3768 | struct symtab *st = NULL; |
c906108c SS |
3769 | FDR *fh; |
3770 | struct linetable *lines; | |
3771 | CORE_ADDR lowest_pdr_addr = 0; | |
16db6055 | 3772 | int last_symtab_ended = 0; |
c906108c SS |
3773 | |
3774 | if (pst->readin) | |
3775 | return; | |
3776 | pst->readin = 1; | |
3777 | ||
3778 | /* Read in all partial symbtabs on which this one is dependent. | |
3779 | NOTE that we do have circular dependencies, sigh. We solved | |
3780 | that by setting pst->readin before this point. */ | |
3781 | ||
3782 | for (i = 0; i < pst->number_of_dependencies; i++) | |
3783 | if (!pst->dependencies[i]->readin) | |
3784 | { | |
3785 | /* Inform about additional files to be read in. */ | |
3786 | if (info_verbose) | |
3787 | { | |
3788 | fputs_filtered (" ", gdb_stdout); | |
3789 | wrap_here (""); | |
3790 | fputs_filtered ("and ", gdb_stdout); | |
3791 | wrap_here (""); | |
3792 | printf_filtered ("%s...", | |
3793 | pst->dependencies[i]->filename); | |
3794 | wrap_here (""); /* Flush output */ | |
3795 | gdb_flush (gdb_stdout); | |
3796 | } | |
3797 | /* We only pass the filename for debug purposes */ | |
3798 | psymtab_to_symtab_1 (pst->dependencies[i], | |
3799 | pst->dependencies[i]->filename); | |
3800 | } | |
3801 | ||
3802 | /* Do nothing if this is a dummy psymtab. */ | |
3803 | ||
3804 | if (pst->n_global_syms == 0 && pst->n_static_syms == 0 | |
3973eadd | 3805 | && TEXTLOW (pst) == 0 && TEXTHIGH (pst) == 0) |
c906108c SS |
3806 | return; |
3807 | ||
3808 | /* Now read the symbols for this symtab */ | |
3809 | ||
3810 | cur_bfd = CUR_BFD (pst); | |
3811 | debug_swap = DEBUG_SWAP (pst); | |
3812 | debug_info = DEBUG_INFO (pst); | |
3813 | pending_list = PENDING_LIST (pst); | |
3814 | external_sym_size = debug_swap->external_sym_size; | |
3815 | external_pdr_size = debug_swap->external_pdr_size; | |
3816 | swap_sym_in = debug_swap->swap_sym_in; | |
3817 | swap_pdr_in = debug_swap->swap_pdr_in; | |
3818 | current_objfile = pst->objfile; | |
3819 | cur_fd = FDR_IDX (pst); | |
3820 | fh = ((cur_fd == -1) | |
3821 | ? (FDR *) NULL | |
3822 | : debug_info->fdr + cur_fd); | |
3823 | cur_fdr = fh; | |
3824 | ||
3825 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ | |
3826 | processing_gcc_compilation = 0; | |
3827 | if (fh != (FDR *) NULL && fh->csym >= 2) | |
3828 | { | |
3829 | SYMR sh; | |
3830 | ||
3831 | (*swap_sym_in) (cur_bfd, | |
3832 | ((char *) debug_info->external_sym | |
3833 | + (fh->isymBase + 1) * external_sym_size), | |
3834 | &sh); | |
3835 | if (STREQ (debug_info->ss + fh->issBase + sh.iss, | |
3836 | stabs_symbol)) | |
3837 | { | |
3838 | /* We indicate that this is a GCC compilation so that certain | |
3839 | features will be enabled in stabsread/dbxread. */ | |
3840 | processing_gcc_compilation = 2; | |
3841 | } | |
3842 | } | |
3843 | ||
3844 | if (processing_gcc_compilation != 0) | |
3845 | { | |
3846 | ||
3847 | /* This symbol table contains stabs-in-ecoff entries. */ | |
3848 | ||
3849 | /* Parse local symbols first */ | |
3850 | ||
3851 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */ | |
3852 | { | |
3853 | current_objfile = NULL; | |
3854 | return; | |
3855 | } | |
3856 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
3857 | { | |
3858 | SYMR sh; | |
3859 | char *name; | |
3860 | CORE_ADDR valu; | |
3861 | ||
3862 | (*swap_sym_in) (cur_bfd, | |
3863 | (((char *) debug_info->external_sym) | |
3864 | + (fh->isymBase + cur_sdx) * external_sym_size), | |
3865 | &sh); | |
3866 | name = debug_info->ss + fh->issBase + sh.iss; | |
3867 | valu = sh.value; | |
3868 | /* XXX This is a hack. It will go away! */ | |
3869 | if (ECOFF_IS_STAB (&sh) || (name[0] == '#')) | |
3870 | { | |
3871 | int type_code = ECOFF_UNMARK_STAB (sh.index); | |
3872 | ||
3873 | /* We should never get non N_STAB symbols here, but they | |
c5aa993b JM |
3874 | should be harmless, so keep process_one_symbol from |
3875 | complaining about them. */ | |
c906108c SS |
3876 | if (type_code & N_STAB) |
3877 | { | |
16db6055 EZ |
3878 | /* If we found a trailing N_SO with no name, process |
3879 | it here instead of in process_one_symbol, so we | |
3880 | can keep a handle to its symtab. The symtab | |
3881 | would otherwise be ended twice, once in | |
3882 | process_one_symbol, and once after this loop. */ | |
3883 | if (type_code == N_SO | |
3884 | && last_source_file | |
3885 | && previous_stab_code != (unsigned char) N_SO | |
3886 | && *name == '\000') | |
3887 | { | |
3888 | valu += ANOFFSET (pst->section_offsets, | |
3889 | SECT_OFF_TEXT (pst->objfile)); | |
3890 | previous_stab_code = N_SO; | |
3891 | st = end_symtab (valu, pst->objfile, | |
3892 | SECT_OFF_TEXT (pst->objfile)); | |
3893 | end_stabs (); | |
3894 | last_symtab_ended = 1; | |
3895 | } | |
3896 | else | |
3897 | { | |
3898 | last_symtab_ended = 0; | |
3899 | process_one_symbol (type_code, 0, valu, name, | |
3900 | pst->section_offsets, pst->objfile); | |
3901 | } | |
c906108c SS |
3902 | } |
3903 | /* Similarly a hack. */ | |
3904 | else if (name[0] == '#') | |
3905 | { | |
3906 | process_one_symbol (N_SLINE, 0, valu, name, | |
3907 | pst->section_offsets, pst->objfile); | |
3908 | } | |
3909 | if (type_code == N_FUN) | |
3910 | { | |
3911 | /* Make up special symbol to contain | |
3912 | procedure specific info */ | |
3913 | struct mips_extra_func_info *e = | |
c5aa993b JM |
3914 | ((struct mips_extra_func_info *) |
3915 | obstack_alloc (¤t_objfile->symbol_obstack, | |
3916 | sizeof (struct mips_extra_func_info))); | |
c906108c SS |
3917 | struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME); |
3918 | ||
3919 | memset ((PTR) e, 0, sizeof (struct mips_extra_func_info)); | |
3920 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; | |
3921 | SYMBOL_CLASS (s) = LOC_CONST; | |
3922 | SYMBOL_TYPE (s) = mdebug_type_void; | |
3923 | SYMBOL_VALUE (s) = (long) e; | |
3924 | e->pdr.framereg = -1; | |
3925 | add_symbol_to_list (s, &local_symbols); | |
3926 | } | |
3927 | } | |
3928 | else if (sh.st == stLabel) | |
3929 | { | |
3930 | if (sh.index == indexNil) | |
3931 | { | |
3932 | /* This is what the gcc2_compiled and __gnu_compiled_* | |
3933 | show up as. So don't complain. */ | |
3934 | ; | |
3935 | } | |
3936 | else | |
3937 | { | |
3938 | /* Handle encoded stab line number. */ | |
b8fbeb18 | 3939 | valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)); |
c906108c SS |
3940 | record_line (current_subfile, sh.index, valu); |
3941 | } | |
3942 | } | |
3943 | else if (sh.st == stProc || sh.st == stStaticProc | |
3944 | || sh.st == stStatic || sh.st == stEnd) | |
3945 | /* These are generated by gcc-2.x, do not complain */ | |
3946 | ; | |
3947 | else | |
3948 | complain (&stab_unknown_complaint, name); | |
3949 | } | |
16db6055 EZ |
3950 | |
3951 | if (! last_symtab_ended) | |
3952 | { | |
3973eadd | 3953 | st = end_symtab (TEXTHIGH (pst), pst->objfile, SECT_OFF_TEXT (pst->objfile)); |
16db6055 EZ |
3954 | end_stabs (); |
3955 | } | |
c906108c SS |
3956 | |
3957 | /* Sort the symbol table now, we are done adding symbols to it. | |
c5aa993b | 3958 | We must do this before parse_procedure calls lookup_symbol. */ |
c906108c SS |
3959 | sort_symtab_syms (st); |
3960 | ||
3961 | /* There used to be a call to sort_blocks here, but this should not | |
c5aa993b JM |
3962 | be necessary for stabs symtabs. And as sort_blocks modifies the |
3963 | start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK, | |
3964 | it did the wrong thing if the first procedure in a file was | |
3965 | generated via asm statements. */ | |
c906108c SS |
3966 | |
3967 | /* Fill in procedure info next. */ | |
3968 | if (fh->cpd > 0) | |
3969 | { | |
3970 | PDR *pr_block; | |
3971 | struct cleanup *old_chain; | |
3972 | char *pdr_ptr; | |
3973 | char *pdr_end; | |
3974 | PDR *pdr_in; | |
3975 | PDR *pdr_in_end; | |
3976 | ||
3977 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
b8c9b27d | 3978 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
3979 | |
3980 | pdr_ptr = ((char *) debug_info->external_pdr | |
3981 | + fh->ipdFirst * external_pdr_size); | |
3982 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
3983 | pdr_in = pr_block; | |
3984 | for (; | |
3985 | pdr_ptr < pdr_end; | |
3986 | pdr_ptr += external_pdr_size, pdr_in++) | |
3987 | { | |
3988 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
3989 | ||
3990 | /* Determine lowest PDR address, the PDRs are not always | |
c5aa993b | 3991 | sorted. */ |
c906108c SS |
3992 | if (pdr_in == pr_block) |
3993 | lowest_pdr_addr = pdr_in->adr; | |
3994 | else if (pdr_in->adr < lowest_pdr_addr) | |
3995 | lowest_pdr_addr = pdr_in->adr; | |
3996 | } | |
3997 | ||
3998 | pdr_in = pr_block; | |
3999 | pdr_in_end = pdr_in + fh->cpd; | |
4000 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4001 | parse_procedure (pdr_in, st, pst); | |
4002 | ||
4003 | do_cleanups (old_chain); | |
4004 | } | |
4005 | } | |
4006 | else | |
4007 | { | |
4008 | /* This symbol table contains ordinary ecoff entries. */ | |
4009 | ||
4010 | int f_max; | |
4011 | int maxlines; | |
4012 | EXTR *ext_ptr; | |
4013 | ||
4014 | /* How many symbols will we need */ | |
4015 | /* FIXME, this does not count enum values. */ | |
4016 | f_max = pst->n_global_syms + pst->n_static_syms; | |
4017 | if (fh == 0) | |
4018 | { | |
4019 | maxlines = 0; | |
4020 | st = new_symtab ("unknown", f_max, 0, pst->objfile); | |
4021 | } | |
4022 | else | |
4023 | { | |
4024 | f_max += fh->csym + fh->cpd; | |
4025 | maxlines = 2 * fh->cline; | |
4026 | st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile); | |
4027 | ||
4028 | /* The proper language was already determined when building | |
4029 | the psymtab, use it. */ | |
4030 | st->language = PST_PRIVATE (pst)->pst_language; | |
4031 | } | |
4032 | ||
4033 | psymtab_language = st->language; | |
4034 | ||
4035 | lines = LINETABLE (st); | |
4036 | ||
4037 | /* Get a new lexical context */ | |
4038 | ||
4039 | push_parse_stack (); | |
4040 | top_stack->cur_st = st; | |
4041 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st), | |
4042 | STATIC_BLOCK); | |
3973eadd | 4043 | BLOCK_START (top_stack->cur_block) = TEXTLOW (pst); |
c906108c SS |
4044 | BLOCK_END (top_stack->cur_block) = 0; |
4045 | top_stack->blocktype = stFile; | |
4046 | top_stack->maxsyms = 2 * f_max; | |
4047 | top_stack->cur_type = 0; | |
4048 | top_stack->procadr = 0; | |
4049 | top_stack->numargs = 0; | |
4050 | found_ecoff_debugging_info = 0; | |
4051 | ||
4052 | if (fh) | |
4053 | { | |
4054 | char *sym_ptr; | |
4055 | char *sym_end; | |
4056 | ||
4057 | /* Parse local symbols first */ | |
4058 | sym_ptr = ((char *) debug_info->external_sym | |
4059 | + fh->isymBase * external_sym_size); | |
4060 | sym_end = sym_ptr + fh->csym * external_sym_size; | |
4061 | while (sym_ptr < sym_end) | |
4062 | { | |
4063 | SYMR sh; | |
4064 | int c; | |
4065 | ||
4066 | (*swap_sym_in) (cur_bfd, sym_ptr, &sh); | |
4067 | c = parse_symbol (&sh, | |
4068 | debug_info->external_aux + fh->iauxBase, | |
b8fbeb18 | 4069 | sym_ptr, fh->fBigendian, pst->section_offsets, pst->objfile); |
c906108c SS |
4070 | sym_ptr += c * external_sym_size; |
4071 | } | |
4072 | ||
4073 | /* Linenumbers. At the end, check if we can save memory. | |
4074 | parse_lines has to look ahead an arbitrary number of PDR | |
4075 | structures, so we swap them all first. */ | |
4076 | if (fh->cpd > 0) | |
4077 | { | |
4078 | PDR *pr_block; | |
4079 | struct cleanup *old_chain; | |
4080 | char *pdr_ptr; | |
4081 | char *pdr_end; | |
4082 | PDR *pdr_in; | |
4083 | PDR *pdr_in_end; | |
4084 | ||
4085 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
4086 | ||
b8c9b27d | 4087 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4088 | |
4089 | pdr_ptr = ((char *) debug_info->external_pdr | |
4090 | + fh->ipdFirst * external_pdr_size); | |
4091 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4092 | pdr_in = pr_block; | |
4093 | for (; | |
4094 | pdr_ptr < pdr_end; | |
4095 | pdr_ptr += external_pdr_size, pdr_in++) | |
4096 | { | |
4097 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4098 | ||
4099 | /* Determine lowest PDR address, the PDRs are not always | |
4100 | sorted. */ | |
4101 | if (pdr_in == pr_block) | |
4102 | lowest_pdr_addr = pdr_in->adr; | |
4103 | else if (pdr_in->adr < lowest_pdr_addr) | |
4104 | lowest_pdr_addr = pdr_in->adr; | |
4105 | } | |
4106 | ||
4107 | parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr); | |
4108 | if (lines->nitems < fh->cline) | |
4109 | lines = shrink_linetable (lines); | |
4110 | ||
4111 | /* Fill in procedure info next. */ | |
4112 | pdr_in = pr_block; | |
4113 | pdr_in_end = pdr_in + fh->cpd; | |
4114 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4115 | parse_procedure (pdr_in, 0, pst); | |
4116 | ||
4117 | do_cleanups (old_chain); | |
4118 | } | |
4119 | } | |
4120 | ||
4121 | LINETABLE (st) = lines; | |
4122 | ||
4123 | /* .. and our share of externals. | |
c5aa993b JM |
4124 | XXX use the global list to speed up things here. how? |
4125 | FIXME, Maybe quit once we have found the right number of ext's? */ | |
c906108c SS |
4126 | top_stack->cur_st = st; |
4127 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
4128 | GLOBAL_BLOCK); | |
4129 | top_stack->blocktype = stFile; | |
4130 | top_stack->maxsyms | |
4131 | = (debug_info->symbolic_header.isymMax | |
4132 | + debug_info->symbolic_header.ipdMax | |
4133 | + debug_info->symbolic_header.iextMax); | |
4134 | ||
4135 | ext_ptr = PST_PRIVATE (pst)->extern_tab; | |
4136 | for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) | |
b8fbeb18 | 4137 | parse_external (ext_ptr, fh->fBigendian, pst->section_offsets, pst->objfile); |
c906108c SS |
4138 | |
4139 | /* If there are undefined symbols, tell the user. | |
c5aa993b JM |
4140 | The alpha has an undefined symbol for every symbol that is |
4141 | from a shared library, so tell the user only if verbose is on. */ | |
c906108c SS |
4142 | if (info_verbose && n_undef_symbols) |
4143 | { | |
4144 | printf_filtered ("File %s contains %d unresolved references:", | |
4145 | st->filename, n_undef_symbols); | |
4146 | printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n", | |
4147 | n_undef_vars, n_undef_procs, n_undef_labels); | |
4148 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; | |
4149 | ||
4150 | } | |
4151 | pop_parse_stack (); | |
4152 | ||
4153 | st->primary = 1; | |
4154 | ||
c5aa993b | 4155 | /* Sort the symbol table now, we are done adding symbols to it. */ |
c906108c SS |
4156 | sort_symtab_syms (st); |
4157 | ||
4158 | sort_blocks (st); | |
4159 | } | |
4160 | ||
4161 | /* Now link the psymtab and the symtab. */ | |
4162 | pst->symtab = st; | |
4163 | ||
4164 | current_objfile = NULL; | |
4165 | } | |
4166 | \f | |
4167 | /* Ancillary parsing procedures. */ | |
4168 | ||
4169 | /* Return 1 if the symbol pointed to by SH has a cross reference | |
4170 | to an opaque aggregate type, else 0. */ | |
4171 | ||
4172 | static int | |
fba45db2 | 4173 | has_opaque_xref (FDR *fh, SYMR *sh) |
c906108c SS |
4174 | { |
4175 | TIR tir; | |
4176 | union aux_ext *ax; | |
4177 | RNDXR rn[1]; | |
4178 | unsigned int rf; | |
4179 | ||
4180 | if (sh->index == indexNil) | |
4181 | return 0; | |
4182 | ||
4183 | ax = debug_info->external_aux + fh->iauxBase + sh->index; | |
4184 | (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir); | |
4185 | if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum) | |
4186 | return 0; | |
4187 | ||
4188 | ax++; | |
4189 | (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn); | |
4190 | if (rn->rfd == 0xfff) | |
4191 | rf = AUX_GET_ISYM (fh->fBigendian, ax + 1); | |
4192 | else | |
4193 | rf = rn->rfd; | |
4194 | if (rf != -1) | |
4195 | return 0; | |
4196 | return 1; | |
4197 | } | |
4198 | ||
4199 | /* Lookup the type at relative index RN. Return it in TPP | |
4200 | if found and in any event come up with its name PNAME. | |
4201 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). | |
4202 | Return value says how many aux symbols we ate. */ | |
4203 | ||
4204 | static int | |
fba45db2 KB |
4205 | cross_ref (int fd, union aux_ext *ax, struct type **tpp, enum type_code type_code, /* Use to alloc new type if none is found. */ |
4206 | char **pname, int bigend, char *sym_name) | |
c906108c SS |
4207 | { |
4208 | RNDXR rn[1]; | |
4209 | unsigned int rf; | |
4210 | int result = 1; | |
4211 | FDR *fh; | |
4212 | char *esh; | |
4213 | SYMR sh; | |
4214 | int xref_fd; | |
4215 | struct mdebug_pending *pend; | |
4216 | ||
c5aa993b | 4217 | *tpp = (struct type *) NULL; |
c906108c SS |
4218 | |
4219 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
4220 | ||
4221 | /* Escape index means 'the next one' */ | |
4222 | if (rn->rfd == 0xfff) | |
4223 | { | |
4224 | result++; | |
4225 | rf = AUX_GET_ISYM (bigend, ax + 1); | |
4226 | } | |
4227 | else | |
4228 | { | |
4229 | rf = rn->rfd; | |
4230 | } | |
4231 | ||
4232 | /* mips cc uses a rf of -1 for opaque struct definitions. | |
4233 | Set TYPE_FLAG_STUB for these types so that check_typedef will | |
4234 | resolve them if the struct gets defined in another compilation unit. */ | |
4235 | if (rf == -1) | |
4236 | { | |
4237 | *pname = "<undefined>"; | |
0b3d7c6d | 4238 | *tpp = init_type (type_code, 0, TYPE_FLAG_STUB, (char *) NULL, current_objfile); |
c906108c SS |
4239 | return result; |
4240 | } | |
4241 | ||
4242 | /* mips cc uses an escaped rn->index of 0 for struct return types | |
4243 | of procedures that were compiled without -g. These will always remain | |
4244 | undefined. */ | |
4245 | if (rn->rfd == 0xfff && rn->index == 0) | |
4246 | { | |
4247 | *pname = "<undefined>"; | |
4248 | return result; | |
4249 | } | |
4250 | ||
4251 | /* Find the relative file descriptor and the symbol in it. */ | |
4252 | fh = get_rfd (fd, rf); | |
4253 | xref_fd = fh - debug_info->fdr; | |
4254 | ||
4255 | if (rn->index >= fh->csym) | |
4256 | { | |
4257 | /* File indirect entry is corrupt. */ | |
4258 | *pname = "<illegal>"; | |
4259 | complain (&bad_rfd_entry_complaint, | |
4260 | sym_name, xref_fd, rn->index); | |
4261 | return result; | |
4262 | } | |
4263 | ||
4264 | /* If we have processed this symbol then we left a forwarding | |
4265 | pointer to the type in the pending list. If not, we`ll put | |
4266 | it in a list of pending types, to be processed later when | |
4267 | the file will be. In any event, we collect the name for the | |
4268 | type here. */ | |
4269 | ||
4270 | esh = ((char *) debug_info->external_sym | |
4271 | + ((fh->isymBase + rn->index) | |
4272 | * debug_swap->external_sym_size)); | |
4273 | (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh); | |
4274 | ||
4275 | /* Make sure that this type of cross reference can be handled. */ | |
4276 | if ((sh.sc != scInfo | |
4277 | || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect | |
4278 | && sh.st != stStruct && sh.st != stUnion | |
4279 | && sh.st != stEnum)) | |
c5aa993b | 4280 | && (sh.st != stBlock || !SC_IS_COMMON (sh.sc))) |
c906108c SS |
4281 | { |
4282 | /* File indirect entry is corrupt. */ | |
4283 | *pname = "<illegal>"; | |
4284 | complain (&bad_rfd_entry_complaint, | |
4285 | sym_name, xref_fd, rn->index); | |
4286 | return result; | |
4287 | } | |
4288 | ||
4289 | *pname = debug_info->ss + fh->issBase + sh.iss; | |
4290 | ||
4291 | pend = is_pending_symbol (fh, esh); | |
4292 | if (pend) | |
4293 | *tpp = pend->t; | |
4294 | else | |
4295 | { | |
4296 | /* We have not yet seen this type. */ | |
4297 | ||
4298 | if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect) | |
4299 | { | |
4300 | TIR tir; | |
4301 | ||
4302 | /* alpha cc puts out a stTypedef with a sh.iss of zero for | |
4303 | two cases: | |
4304 | a) forward declarations of structs/unions/enums which are not | |
c5aa993b JM |
4305 | defined in this compilation unit. |
4306 | For these the type will be void. This is a bad design decision | |
4307 | as cross referencing across compilation units is impossible | |
4308 | due to the missing name. | |
c906108c | 4309 | b) forward declarations of structs/unions/enums/typedefs which |
c5aa993b JM |
4310 | are defined later in this file or in another file in the same |
4311 | compilation unit. Irix5 cc uses a stIndirect symbol for this. | |
4312 | Simply cross reference those again to get the true type. | |
c906108c SS |
4313 | The forward references are not entered in the pending list and |
4314 | in the symbol table. */ | |
4315 | ||
4316 | (*debug_swap->swap_tir_in) (bigend, | |
4317 | &(debug_info->external_aux | |
4318 | + fh->iauxBase + sh.index)->a_ti, | |
4319 | &tir); | |
4320 | if (tir.tq0 != tqNil) | |
4321 | complain (&illegal_forward_tq0_complaint, sym_name); | |
4322 | switch (tir.bt) | |
4323 | { | |
4324 | case btVoid: | |
4325 | *tpp = init_type (type_code, 0, 0, (char *) NULL, | |
4326 | current_objfile); | |
c5aa993b | 4327 | *pname = "<undefined>"; |
c906108c SS |
4328 | break; |
4329 | ||
4330 | case btStruct: | |
4331 | case btUnion: | |
4332 | case btEnum: | |
4333 | cross_ref (xref_fd, | |
4334 | (debug_info->external_aux | |
4335 | + fh->iauxBase + sh.index + 1), | |
4336 | tpp, type_code, pname, | |
4337 | fh->fBigendian, sym_name); | |
4338 | break; | |
4339 | ||
4340 | case btTypedef: | |
4341 | /* Follow a forward typedef. This might recursively | |
c5aa993b JM |
4342 | call cross_ref till we get a non typedef'ed type. |
4343 | FIXME: This is not correct behaviour, but gdb currently | |
4344 | cannot handle typedefs without type copying. Type | |
4345 | copying is impossible as we might have mutual forward | |
4346 | references between two files and the copied type would not | |
4347 | get filled in when we later parse its definition. */ | |
c906108c SS |
4348 | *tpp = parse_type (xref_fd, |
4349 | debug_info->external_aux + fh->iauxBase, | |
4350 | sh.index, | |
c5aa993b | 4351 | (int *) NULL, |
c906108c SS |
4352 | fh->fBigendian, |
4353 | debug_info->ss + fh->issBase + sh.iss); | |
4354 | add_pending (fh, esh, *tpp); | |
4355 | break; | |
4356 | ||
4357 | default: | |
4358 | complain (&illegal_forward_bt_complaint, tir.bt, sym_name); | |
4359 | *tpp = init_type (type_code, 0, 0, (char *) NULL, | |
4360 | current_objfile); | |
4361 | break; | |
4362 | } | |
4363 | return result; | |
4364 | } | |
4365 | else if (sh.st == stTypedef) | |
4366 | { | |
4367 | /* Parse the type for a normal typedef. This might recursively call | |
4368 | cross_ref till we get a non typedef'ed type. | |
4369 | FIXME: This is not correct behaviour, but gdb currently | |
4370 | cannot handle typedefs without type copying. But type copying is | |
4371 | impossible as we might have mutual forward references between | |
4372 | two files and the copied type would not get filled in when | |
4373 | we later parse its definition. */ | |
4374 | *tpp = parse_type (xref_fd, | |
4375 | debug_info->external_aux + fh->iauxBase, | |
4376 | sh.index, | |
c5aa993b | 4377 | (int *) NULL, |
c906108c SS |
4378 | fh->fBigendian, |
4379 | debug_info->ss + fh->issBase + sh.iss); | |
4380 | } | |
4381 | else | |
4382 | { | |
4383 | /* Cross reference to a struct/union/enum which is defined | |
4384 | in another file in the same compilation unit but that file | |
4385 | has not been parsed yet. | |
4386 | Initialize the type only, it will be filled in when | |
4387 | it's definition is parsed. */ | |
4388 | *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
4389 | } | |
4390 | add_pending (fh, esh, *tpp); | |
4391 | } | |
4392 | ||
4393 | /* We used one auxent normally, two if we got a "next one" rf. */ | |
4394 | return result; | |
4395 | } | |
4396 | ||
4397 | ||
4398 | /* Quick&dirty lookup procedure, to avoid the MI ones that require | |
4399 | keeping the symtab sorted */ | |
4400 | ||
4401 | static struct symbol * | |
fba45db2 KB |
4402 | mylookup_symbol (char *name, register struct block *block, |
4403 | namespace_enum namespace, enum address_class class) | |
c906108c | 4404 | { |
e88c90f2 DJ |
4405 | int i, inc; |
4406 | struct symbol *sym; | |
c906108c | 4407 | |
c906108c | 4408 | inc = name[0]; |
e88c90f2 | 4409 | ALL_BLOCK_SYMBOLS (block, i, sym) |
c906108c | 4410 | { |
c906108c SS |
4411 | if (SYMBOL_NAME (sym)[0] == inc |
4412 | && SYMBOL_NAMESPACE (sym) == namespace | |
4413 | && SYMBOL_CLASS (sym) == class | |
4414 | && strcmp (SYMBOL_NAME (sym), name) == 0) | |
4415 | return sym; | |
c906108c | 4416 | } |
e88c90f2 | 4417 | |
c906108c SS |
4418 | block = BLOCK_SUPERBLOCK (block); |
4419 | if (block) | |
4420 | return mylookup_symbol (name, block, namespace, class); | |
4421 | return 0; | |
4422 | } | |
4423 | ||
4424 | ||
4425 | /* Add a new symbol S to a block B. | |
4426 | Infrequently, we will need to reallocate the block to make it bigger. | |
4427 | We only detect this case when adding to top_stack->cur_block, since | |
4428 | that's the only time we know how big the block is. FIXME. */ | |
4429 | ||
4430 | static void | |
fba45db2 | 4431 | add_symbol (struct symbol *s, struct block *b) |
c906108c SS |
4432 | { |
4433 | int nsyms = BLOCK_NSYMS (b)++; | |
4434 | struct block *origb; | |
4435 | struct parse_stack *stackp; | |
4436 | ||
4437 | if (b == top_stack->cur_block && | |
4438 | nsyms >= top_stack->maxsyms) | |
4439 | { | |
4440 | complain (&block_overflow_complaint, SYMBOL_NAME (s)); | |
4441 | /* In this case shrink_block is actually grow_block, since | |
c5aa993b | 4442 | BLOCK_NSYMS(b) is larger than its current size. */ |
c906108c SS |
4443 | origb = b; |
4444 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); | |
4445 | ||
4446 | /* Now run through the stack replacing pointers to the | |
c5aa993b JM |
4447 | original block. shrink_block has already done this |
4448 | for the blockvector and BLOCK_FUNCTION. */ | |
c906108c SS |
4449 | for (stackp = top_stack; stackp; stackp = stackp->next) |
4450 | { | |
4451 | if (stackp->cur_block == origb) | |
4452 | { | |
4453 | stackp->cur_block = b; | |
4454 | stackp->maxsyms = BLOCK_NSYMS (b); | |
4455 | } | |
4456 | } | |
4457 | } | |
4458 | BLOCK_SYM (b, nsyms) = s; | |
4459 | } | |
4460 | ||
4461 | /* Add a new block B to a symtab S */ | |
4462 | ||
4463 | static void | |
fba45db2 | 4464 | add_block (struct block *b, struct symtab *s) |
c906108c SS |
4465 | { |
4466 | struct blockvector *bv = BLOCKVECTOR (s); | |
4467 | ||
4468 | bv = (struct blockvector *) xrealloc ((PTR) bv, | |
4469 | (sizeof (struct blockvector) | |
4470 | + BLOCKVECTOR_NBLOCKS (bv) | |
4471 | * sizeof (bv->block))); | |
4472 | if (bv != BLOCKVECTOR (s)) | |
4473 | BLOCKVECTOR (s) = bv; | |
4474 | ||
4475 | BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b; | |
4476 | } | |
4477 | ||
4478 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. | |
4479 | MIPS' linenumber encoding might need more than one byte | |
4480 | to describe it, LAST is used to detect these continuation lines. | |
4481 | ||
4482 | Combining lines with the same line number seems like a bad idea. | |
4483 | E.g: There could be a line number entry with the same line number after the | |
4484 | prologue and GDB should not ignore it (this is a better way to find | |
4485 | a prologue than mips_skip_prologue). | |
4486 | But due to the compressed line table format there are line number entries | |
4487 | for the same line which are needed to bridge the gap to the next | |
4488 | line number entry. These entries have a bogus address info with them | |
4489 | and we are unable to tell them from intended duplicate line number | |
4490 | entries. | |
4491 | This is another reason why -ggdb debugging format is preferable. */ | |
4492 | ||
4493 | static int | |
fba45db2 | 4494 | add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last) |
c906108c SS |
4495 | { |
4496 | /* DEC c89 sometimes produces zero linenos which confuse gdb. | |
4497 | Change them to something sensible. */ | |
4498 | if (lineno == 0) | |
4499 | lineno = 1; | |
4500 | if (last == 0) | |
4501 | last = -2; /* make sure we record first line */ | |
4502 | ||
4503 | if (last == lineno) /* skip continuation lines */ | |
4504 | return lineno; | |
4505 | ||
4506 | lt->item[lt->nitems].line = lineno; | |
4507 | lt->item[lt->nitems++].pc = adr << 2; | |
4508 | return lineno; | |
4509 | } | |
4510 | \f | |
4511 | /* Sorting and reordering procedures */ | |
4512 | ||
4513 | /* Blocks with a smaller low bound should come first */ | |
4514 | ||
4515 | static int | |
fba45db2 | 4516 | compare_blocks (const PTR arg1, const PTR arg2) |
c906108c SS |
4517 | { |
4518 | register int addr_diff; | |
4519 | struct block **b1 = (struct block **) arg1; | |
4520 | struct block **b2 = (struct block **) arg2; | |
4521 | ||
4522 | addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2))); | |
4523 | if (addr_diff == 0) | |
4524 | return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1))); | |
4525 | return addr_diff; | |
4526 | } | |
4527 | ||
4528 | /* Sort the blocks of a symtab S. | |
4529 | Reorder the blocks in the blockvector by code-address, | |
4530 | as required by some MI search routines */ | |
4531 | ||
4532 | static void | |
fba45db2 | 4533 | sort_blocks (struct symtab *s) |
c906108c SS |
4534 | { |
4535 | struct blockvector *bv = BLOCKVECTOR (s); | |
4536 | ||
4537 | if (BLOCKVECTOR_NBLOCKS (bv) <= 2) | |
4538 | { | |
4539 | /* Cosmetic */ | |
4540 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0) | |
4541 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0; | |
4542 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0) | |
4543 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0; | |
4544 | return; | |
4545 | } | |
4546 | /* | |
4547 | * This is very unfortunate: normally all functions are compiled in | |
4548 | * the order they are found, but if the file is compiled -O3 things | |
4549 | * are very different. It would be nice to find a reliable test | |
4550 | * to detect -O3 images in advance. | |
4551 | */ | |
4552 | if (BLOCKVECTOR_NBLOCKS (bv) > 3) | |
4553 | qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK), | |
4554 | BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK, | |
4555 | sizeof (struct block *), | |
4556 | compare_blocks); | |
4557 | ||
4558 | { | |
4559 | register CORE_ADDR high = 0; | |
4560 | register int i, j = BLOCKVECTOR_NBLOCKS (bv); | |
4561 | ||
4562 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) | |
4563 | if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i))) | |
4564 | high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)); | |
4565 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high; | |
4566 | } | |
4567 | ||
4568 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = | |
4569 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK)); | |
4570 | ||
4571 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4572 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4573 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4574 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4575 | } | |
4576 | \f | |
4577 | ||
4578 | /* Constructor/restructor/destructor procedures */ | |
4579 | ||
4580 | /* Allocate a new symtab for NAME. Needs an estimate of how many symbols | |
4581 | MAXSYMS and linenumbers MAXLINES we'll put in it */ | |
4582 | ||
4583 | static struct symtab * | |
fba45db2 | 4584 | new_symtab (char *name, int maxsyms, int maxlines, struct objfile *objfile) |
c906108c SS |
4585 | { |
4586 | struct symtab *s = allocate_symtab (name, objfile); | |
4587 | ||
4588 | LINETABLE (s) = new_linetable (maxlines); | |
4589 | ||
4590 | /* All symtabs must have at least two blocks */ | |
4591 | BLOCKVECTOR (s) = new_bvect (2); | |
4592 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms); | |
4593 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms); | |
4594 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) = | |
4595 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
4596 | ||
4597 | s->free_code = free_linetable; | |
4598 | s->debugformat = obsavestring ("ECOFF", 5, | |
c5aa993b | 4599 | &objfile->symbol_obstack); |
c906108c SS |
4600 | return (s); |
4601 | } | |
4602 | ||
4603 | /* Allocate a new partial_symtab NAME */ | |
4604 | ||
4605 | static struct partial_symtab * | |
fba45db2 | 4606 | new_psymtab (char *name, struct objfile *objfile) |
c906108c SS |
4607 | { |
4608 | struct partial_symtab *psymtab; | |
4609 | ||
4610 | psymtab = allocate_psymtab (name, objfile); | |
d4f3574e | 4611 | psymtab->section_offsets = objfile->section_offsets; |
c906108c SS |
4612 | |
4613 | /* Keep a backpointer to the file's symbols */ | |
4614 | ||
4615 | psymtab->read_symtab_private = ((char *) | |
4616 | obstack_alloc (&objfile->psymbol_obstack, | |
4617 | sizeof (struct symloc))); | |
4618 | memset ((PTR) psymtab->read_symtab_private, 0, sizeof (struct symloc)); | |
4619 | CUR_BFD (psymtab) = cur_bfd; | |
4620 | DEBUG_SWAP (psymtab) = debug_swap; | |
4621 | DEBUG_INFO (psymtab) = debug_info; | |
4622 | PENDING_LIST (psymtab) = pending_list; | |
4623 | ||
4624 | /* The way to turn this into a symtab is to call... */ | |
4625 | psymtab->read_symtab = mdebug_psymtab_to_symtab; | |
4626 | return (psymtab); | |
4627 | } | |
4628 | ||
4629 | ||
4630 | /* Allocate a linetable array of the given SIZE. Since the struct | |
4631 | already includes one item, we subtract one when calculating the | |
4632 | proper size to allocate. */ | |
4633 | ||
4634 | static struct linetable * | |
fba45db2 | 4635 | new_linetable (int size) |
c906108c SS |
4636 | { |
4637 | struct linetable *l; | |
4638 | ||
4639 | size = (size - 1) * sizeof (l->item) + sizeof (struct linetable); | |
4640 | l = (struct linetable *) xmalloc (size); | |
4641 | l->nitems = 0; | |
4642 | return l; | |
4643 | } | |
4644 | ||
4645 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, | |
4646 | I am not so sure about the 3.4 ones. | |
4647 | ||
4648 | Since the struct linetable already includes one item, we subtract one when | |
4649 | calculating the proper size to allocate. */ | |
4650 | ||
4651 | static struct linetable * | |
fba45db2 | 4652 | shrink_linetable (struct linetable *lt) |
c906108c SS |
4653 | { |
4654 | ||
4655 | return (struct linetable *) xrealloc ((PTR) lt, | |
4656 | (sizeof (struct linetable) | |
4657 | + ((lt->nitems - 1) | |
4658 | * sizeof (lt->item)))); | |
4659 | } | |
4660 | ||
4661 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ | |
4662 | ||
4663 | static struct blockvector * | |
fba45db2 | 4664 | new_bvect (int nblocks) |
c906108c SS |
4665 | { |
4666 | struct blockvector *bv; | |
4667 | int size; | |
4668 | ||
4669 | size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); | |
4670 | bv = (struct blockvector *) xzalloc (size); | |
4671 | ||
4672 | BLOCKVECTOR_NBLOCKS (bv) = nblocks; | |
4673 | ||
4674 | return bv; | |
4675 | } | |
4676 | ||
4677 | /* Allocate and zero a new block of MAXSYMS symbols */ | |
4678 | ||
4679 | static struct block * | |
fba45db2 | 4680 | new_block (int maxsyms) |
c906108c SS |
4681 | { |
4682 | int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *); | |
4683 | ||
4684 | return (struct block *) xzalloc (size); | |
4685 | } | |
4686 | ||
4687 | /* Ooops, too big. Shrink block B in symtab S to its minimal size. | |
4688 | Shrink_block can also be used by add_symbol to grow a block. */ | |
4689 | ||
4690 | static struct block * | |
fba45db2 | 4691 | shrink_block (struct block *b, struct symtab *s) |
c906108c SS |
4692 | { |
4693 | struct block *new; | |
4694 | struct blockvector *bv = BLOCKVECTOR (s); | |
4695 | int i; | |
4696 | ||
4697 | /* Just reallocate it and fix references to the old one */ | |
4698 | ||
4699 | new = (struct block *) xrealloc ((PTR) b, | |
4700 | (sizeof (struct block) | |
4701 | + ((BLOCK_NSYMS (b) - 1) | |
4702 | * sizeof (struct symbol *)))); | |
4703 | ||
4704 | /* Should chase pointers to old one. Fortunately, that`s just | |
c5aa993b | 4705 | the block`s function and inferior blocks */ |
c906108c SS |
4706 | if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b) |
4707 | SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new; | |
4708 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
4709 | if (BLOCKVECTOR_BLOCK (bv, i) == b) | |
4710 | BLOCKVECTOR_BLOCK (bv, i) = new; | |
4711 | else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b) | |
4712 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new; | |
4713 | return new; | |
4714 | } | |
4715 | ||
4716 | /* Create a new symbol with printname NAME */ | |
4717 | ||
4718 | static struct symbol * | |
fba45db2 | 4719 | new_symbol (char *name) |
c906108c SS |
4720 | { |
4721 | struct symbol *s = ((struct symbol *) | |
4722 | obstack_alloc (¤t_objfile->symbol_obstack, | |
4723 | sizeof (struct symbol))); | |
4724 | ||
4725 | memset ((PTR) s, 0, sizeof (*s)); | |
4726 | SYMBOL_NAME (s) = obsavestring (name, strlen (name), | |
4727 | ¤t_objfile->symbol_obstack); | |
4728 | SYMBOL_LANGUAGE (s) = psymtab_language; | |
4729 | SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack); | |
4730 | return s; | |
4731 | } | |
4732 | ||
4733 | /* Create a new type with printname NAME */ | |
4734 | ||
4735 | static struct type * | |
fba45db2 | 4736 | new_type (char *name) |
c906108c SS |
4737 | { |
4738 | struct type *t; | |
4739 | ||
4740 | t = alloc_type (current_objfile); | |
4741 | TYPE_NAME (t) = name; | |
4742 | TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default; | |
4743 | return t; | |
4744 | } | |
4745 | \f | |
4746 | /* Read ECOFF debugging information from a BFD section. This is | |
4747 | called from elfread.c. It parses the section into a | |
4748 | ecoff_debug_info struct, and then lets the rest of the file handle | |
4749 | it as normal. */ | |
4750 | ||
4751 | void | |
fba45db2 KB |
4752 | elfmdebug_build_psymtabs (struct objfile *objfile, |
4753 | const struct ecoff_debug_swap *swap, asection *sec) | |
c906108c SS |
4754 | { |
4755 | bfd *abfd = objfile->obfd; | |
4756 | struct ecoff_debug_info *info; | |
4757 | ||
4758 | info = ((struct ecoff_debug_info *) | |
4759 | obstack_alloc (&objfile->psymbol_obstack, | |
4760 | sizeof (struct ecoff_debug_info))); | |
4761 | ||
4762 | if (!(*swap->read_debug_info) (abfd, sec, info)) | |
4763 | error ("Error reading ECOFF debugging information: %s", | |
4764 | bfd_errmsg (bfd_get_error ())); | |
4765 | ||
d4f3574e | 4766 | mdebug_build_psymtabs (objfile, swap, info); |
c906108c SS |
4767 | } |
4768 | \f | |
4769 | ||
4770 | /* Things used for calling functions in the inferior. | |
4771 | These functions are exported to our companion | |
4772 | mips-tdep.c file and are here because they play | |
4773 | with the symbol-table explicitly. */ | |
4774 | ||
4775 | /* Sigtramp: make sure we have all the necessary information | |
4776 | about the signal trampoline code. Since the official code | |
4777 | from MIPS does not do so, we make up that information ourselves. | |
4778 | If they fix the library (unlikely) this code will neutralize itself. */ | |
4779 | ||
4780 | /* FIXME: This function is called only by mips-tdep.c. It needs to be | |
4781 | here because it calls functions defined in this file, but perhaps | |
4782 | this could be handled in a better way. Only compile it in when | |
4783 | tm-mips.h is included. */ | |
4784 | ||
4785 | #ifdef TM_MIPS_H | |
4786 | ||
4787 | void | |
fba45db2 | 4788 | fixup_sigtramp (void) |
c906108c SS |
4789 | { |
4790 | struct symbol *s; | |
4791 | struct symtab *st; | |
4792 | struct block *b, *b0 = NULL; | |
4793 | ||
4794 | sigtramp_address = -1; | |
4795 | ||
4796 | /* We have to handle the following cases here: | |
4797 | a) The Mips library has a sigtramp label within sigvec. | |
4798 | b) Irix has a _sigtramp which we want to use, but it also has sigvec. */ | |
4799 | s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL); | |
4800 | if (s != 0) | |
4801 | { | |
4802 | b0 = SYMBOL_BLOCK_VALUE (s); | |
4803 | s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL); | |
4804 | } | |
4805 | if (s == 0) | |
4806 | { | |
4807 | /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */ | |
4808 | s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL); | |
4809 | } | |
4810 | ||
4811 | /* But maybe this program uses its own version of sigvec */ | |
4812 | if (s == 0) | |
4813 | return; | |
4814 | ||
4815 | /* Did we or MIPSco fix the library ? */ | |
4816 | if (SYMBOL_CLASS (s) == LOC_BLOCK) | |
4817 | { | |
4818 | sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s)); | |
4819 | sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s)); | |
4820 | return; | |
4821 | } | |
4822 | ||
4823 | sigtramp_address = SYMBOL_VALUE (s); | |
4824 | sigtramp_end = sigtramp_address + 0x88; /* black magic */ | |
4825 | ||
4826 | /* But what symtab does it live in ? */ | |
4827 | st = find_pc_symtab (SYMBOL_VALUE (s)); | |
4828 | ||
4829 | /* | |
4830 | * Ok, there goes the fix: turn it into a procedure, with all the | |
4831 | * needed info. Note we make it a nested procedure of sigvec, | |
4832 | * which is the way the (assembly) code is actually written. | |
4833 | */ | |
4834 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
4835 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
4836 | SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL, | |
4837 | st->objfile); | |
4838 | TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = mdebug_type_void; | |
4839 | ||
4840 | /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */ | |
4841 | b = new_block (1); | |
4842 | SYMBOL_BLOCK_VALUE (s) = b; | |
4843 | BLOCK_START (b) = sigtramp_address; | |
4844 | BLOCK_END (b) = sigtramp_end; | |
4845 | BLOCK_FUNCTION (b) = s; | |
4846 | BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0); | |
4847 | add_block (b, st); | |
4848 | sort_blocks (st); | |
4849 | ||
4850 | /* Make a MIPS_EFI_SYMBOL_NAME entry for it */ | |
4851 | { | |
4852 | struct mips_extra_func_info *e = | |
c5aa993b JM |
4853 | ((struct mips_extra_func_info *) |
4854 | xzalloc (sizeof (struct mips_extra_func_info))); | |
c906108c SS |
4855 | |
4856 | e->numargs = 0; /* the kernel thinks otherwise */ | |
4857 | e->pdr.frameoffset = 32; | |
4858 | e->pdr.framereg = SP_REGNUM; | |
4859 | /* Note that setting pcreg is no longer strictly necessary as | |
4860 | mips_frame_saved_pc is now aware of signal handler frames. */ | |
4861 | e->pdr.pcreg = PC_REGNUM; | |
4862 | e->pdr.regmask = -2; | |
4863 | /* Offset to saved r31, in the sigtramp case the saved registers | |
4864 | are above the frame in the sigcontext. | |
4865 | We have 4 alignment bytes, 12 bytes for onstack, mask and pc, | |
4866 | 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp | |
4867 | and 32 * 4 bytes for the floating point registers. */ | |
4868 | e->pdr.regoffset = 4 + 12 + 31 * 4; | |
4869 | e->pdr.fregmask = -1; | |
4870 | /* Offset to saved f30 (first saved *double* register). */ | |
4871 | e->pdr.fregoffset = 4 + 12 + 32 * 4 + 12 + 30 * 4; | |
4872 | e->pdr.isym = (long) s; | |
4873 | e->pdr.adr = sigtramp_address; | |
4874 | ||
4875 | current_objfile = st->objfile; /* Keep new_symbol happy */ | |
4876 | s = new_symbol (MIPS_EFI_SYMBOL_NAME); | |
4877 | SYMBOL_VALUE (s) = (long) e; | |
4878 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; | |
4879 | SYMBOL_CLASS (s) = LOC_CONST; | |
4880 | SYMBOL_TYPE (s) = mdebug_type_void; | |
4881 | current_objfile = NULL; | |
4882 | } | |
4883 | ||
4884 | BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s; | |
4885 | } | |
4886 | ||
c5aa993b | 4887 | #endif /* TM_MIPS_H */ |
c906108c SS |
4888 | |
4889 | void | |
fba45db2 | 4890 | _initialize_mdebugread (void) |
c906108c SS |
4891 | { |
4892 | mdebug_type_void = | |
4893 | init_type (TYPE_CODE_VOID, 1, | |
4894 | 0, | |
4895 | "void", (struct objfile *) NULL); | |
4896 | mdebug_type_char = | |
4897 | init_type (TYPE_CODE_INT, 1, | |
4898 | 0, | |
4899 | "char", (struct objfile *) NULL); | |
4900 | mdebug_type_unsigned_char = | |
4901 | init_type (TYPE_CODE_INT, 1, | |
4902 | TYPE_FLAG_UNSIGNED, | |
4903 | "unsigned char", (struct objfile *) NULL); | |
4904 | mdebug_type_short = | |
4905 | init_type (TYPE_CODE_INT, 2, | |
4906 | 0, | |
4907 | "short", (struct objfile *) NULL); | |
4908 | mdebug_type_unsigned_short = | |
4909 | init_type (TYPE_CODE_INT, 2, | |
4910 | TYPE_FLAG_UNSIGNED, | |
4911 | "unsigned short", (struct objfile *) NULL); | |
4912 | mdebug_type_int_32 = | |
4913 | init_type (TYPE_CODE_INT, 4, | |
4914 | 0, | |
4915 | "int", (struct objfile *) NULL); | |
4916 | mdebug_type_unsigned_int_32 = | |
4917 | init_type (TYPE_CODE_INT, 4, | |
4918 | TYPE_FLAG_UNSIGNED, | |
4919 | "unsigned int", (struct objfile *) NULL); | |
4920 | mdebug_type_int_64 = | |
4921 | init_type (TYPE_CODE_INT, 8, | |
4922 | 0, | |
4923 | "int", (struct objfile *) NULL); | |
4924 | mdebug_type_unsigned_int_64 = | |
4925 | init_type (TYPE_CODE_INT, 8, | |
4926 | TYPE_FLAG_UNSIGNED, | |
4927 | "unsigned int", (struct objfile *) NULL); | |
4928 | mdebug_type_long_32 = | |
4929 | init_type (TYPE_CODE_INT, 4, | |
4930 | 0, | |
4931 | "long", (struct objfile *) NULL); | |
4932 | mdebug_type_unsigned_long_32 = | |
4933 | init_type (TYPE_CODE_INT, 4, | |
4934 | TYPE_FLAG_UNSIGNED, | |
4935 | "unsigned long", (struct objfile *) NULL); | |
4936 | mdebug_type_long_64 = | |
4937 | init_type (TYPE_CODE_INT, 8, | |
4938 | 0, | |
4939 | "long", (struct objfile *) NULL); | |
4940 | mdebug_type_unsigned_long_64 = | |
4941 | init_type (TYPE_CODE_INT, 8, | |
4942 | TYPE_FLAG_UNSIGNED, | |
4943 | "unsigned long", (struct objfile *) NULL); | |
4944 | mdebug_type_long_long_64 = | |
4945 | init_type (TYPE_CODE_INT, 8, | |
4946 | 0, | |
4947 | "long long", (struct objfile *) NULL); | |
c5aa993b | 4948 | mdebug_type_unsigned_long_long_64 = |
c906108c SS |
4949 | init_type (TYPE_CODE_INT, 8, |
4950 | TYPE_FLAG_UNSIGNED, | |
4951 | "unsigned long long", (struct objfile *) NULL); | |
4952 | mdebug_type_adr_32 = | |
4953 | init_type (TYPE_CODE_PTR, 4, | |
4954 | TYPE_FLAG_UNSIGNED, | |
4955 | "adr_32", (struct objfile *) NULL); | |
4956 | TYPE_TARGET_TYPE (mdebug_type_adr_32) = mdebug_type_void; | |
4957 | mdebug_type_adr_64 = | |
4958 | init_type (TYPE_CODE_PTR, 8, | |
4959 | TYPE_FLAG_UNSIGNED, | |
4960 | "adr_64", (struct objfile *) NULL); | |
4961 | TYPE_TARGET_TYPE (mdebug_type_adr_64) = mdebug_type_void; | |
4962 | mdebug_type_float = | |
4963 | init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
4964 | 0, | |
4965 | "float", (struct objfile *) NULL); | |
4966 | mdebug_type_double = | |
4967 | init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
4968 | 0, | |
4969 | "double", (struct objfile *) NULL); | |
4970 | mdebug_type_complex = | |
4971 | init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
4972 | 0, | |
4973 | "complex", (struct objfile *) NULL); | |
4974 | TYPE_TARGET_TYPE (mdebug_type_complex) = mdebug_type_float; | |
4975 | mdebug_type_double_complex = | |
4976 | init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
4977 | 0, | |
4978 | "double complex", (struct objfile *) NULL); | |
4979 | TYPE_TARGET_TYPE (mdebug_type_double_complex) = mdebug_type_double; | |
4980 | ||
4981 | /* Is a "string" the way btString means it the same as TYPE_CODE_STRING? | |
4982 | FIXME. */ | |
4983 | mdebug_type_string = | |
4984 | init_type (TYPE_CODE_STRING, | |
4985 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
4986 | 0, "string", | |
4987 | (struct objfile *) NULL); | |
4988 | ||
4989 | /* We use TYPE_CODE_INT to print these as integers. Does this do any | |
4990 | good? Would we be better off with TYPE_CODE_ERROR? Should | |
4991 | TYPE_CODE_ERROR print things in hex if it knows the size? */ | |
4992 | mdebug_type_fixed_dec = | |
4993 | init_type (TYPE_CODE_INT, | |
4994 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
4995 | 0, "fixed decimal", | |
4996 | (struct objfile *) NULL); | |
4997 | ||
4998 | mdebug_type_float_dec = | |
4999 | init_type (TYPE_CODE_ERROR, | |
5000 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
5001 | 0, "floating decimal", | |
5002 | (struct objfile *) NULL); | |
5003 | ||
5004 | nodebug_func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0, | |
5005 | "<function, no debug info>", NULL); | |
5006 | TYPE_TARGET_TYPE (nodebug_func_symbol_type) = mdebug_type_int; | |
5007 | nodebug_var_symbol_type = | |
5008 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
5009 | "<variable, no debug info>", NULL); | |
5010 | } |