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" | |
04ea0df1 | 50 | #include "gdb_obstack.h" |
c906108c SS |
51 | #include "buildsym.h" |
52 | #include "stabsread.h" | |
53 | #include "complaints.h" | |
54 | #include "demangle.h" | |
261397f8 | 55 | #include "gdb_assert.h" |
c906108c SS |
56 | |
57 | /* These are needed if the tm.h file does not contain the necessary | |
58 | mips specific definitions. */ | |
59 | ||
60 | #ifndef MIPS_EFI_SYMBOL_NAME | |
61 | #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__" | |
a14ed312 | 62 | extern void ecoff_relocate_efi (struct symbol *, CORE_ADDR); |
c906108c SS |
63 | #include "coff/sym.h" |
64 | #include "coff/symconst.h" | |
c5aa993b JM |
65 | typedef struct mips_extra_func_info |
66 | { | |
67 | long numargs; | |
68 | PDR pdr; | |
69 | } | |
70 | *mips_extra_func_info_t; | |
c906108c SS |
71 | #ifndef RA_REGNUM |
72 | #define RA_REGNUM 0 | |
73 | #endif | |
74 | #endif | |
75 | ||
76 | #ifdef USG | |
77 | #include <sys/types.h> | |
78 | #endif | |
79 | ||
80 | #include "gdb_stat.h" | |
81 | #include "gdb_string.h" | |
82 | ||
c906108c SS |
83 | #include "bfd.h" |
84 | ||
85 | #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */ | |
86 | ||
87 | #include "libaout.h" /* Private BFD a.out information. */ | |
88 | #include "aout/aout64.h" | |
89 | #include "aout/stab_gnu.h" /* STABS information */ | |
90 | ||
91 | #include "expression.h" | |
d3119d1e | 92 | #include "language.h" /* For local_hex_string() */ |
c906108c | 93 | |
a14ed312 | 94 | extern void _initialize_mdebugread (void); |
c906108c | 95 | |
c906108c SS |
96 | /* Provide a way to test if we have both ECOFF and ELF symbol tables. |
97 | We use this define in order to know whether we should override a | |
98 | symbol's ECOFF section with its ELF section. This is necessary in | |
99 | case the symbol's ELF section could not be represented in ECOFF. */ | |
100 | #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
101 | && bfd_get_section_by_name (bfd, ".mdebug") != NULL) | |
c906108c | 102 | \f |
c5aa993b | 103 | |
c906108c SS |
104 | /* We put a pointer to this structure in the read_symtab_private field |
105 | of the psymtab. */ | |
106 | ||
107 | struct symloc | |
c5aa993b | 108 | { |
3973eadd JB |
109 | /* Our running best guess as to the range of text addresses for |
110 | this psymtab. After we've read everything in, we use this to | |
111 | build pst->text_addrs. */ | |
112 | CORE_ADDR textlow, texthigh; | |
113 | ||
c5aa993b JM |
114 | /* Index of the FDR that this psymtab represents. */ |
115 | int fdr_idx; | |
116 | /* The BFD that the psymtab was created from. */ | |
117 | bfd *cur_bfd; | |
118 | const struct ecoff_debug_swap *debug_swap; | |
119 | struct ecoff_debug_info *debug_info; | |
120 | struct mdebug_pending **pending_list; | |
121 | /* Pointer to external symbols for this file. */ | |
122 | EXTR *extern_tab; | |
123 | /* Size of extern_tab. */ | |
124 | int extern_count; | |
125 | enum language pst_language; | |
126 | }; | |
c906108c SS |
127 | |
128 | #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private) | |
3973eadd JB |
129 | #define TEXTLOW(p) (PST_PRIVATE(p)->textlow) |
130 | #define TEXTHIGH(p) (PST_PRIVATE(p)->texthigh) | |
c906108c SS |
131 | #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx) |
132 | #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd) | |
133 | #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap) | |
134 | #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info) | |
135 | #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list) | |
136 | ||
137 | #define SC_IS_TEXT(sc) ((sc) == scText \ | |
138 | || (sc) == scRConst \ | |
139 | || (sc) == scInit \ | |
140 | || (sc) == scFini) | |
141 | #define SC_IS_DATA(sc) ((sc) == scData \ | |
142 | || (sc) == scSData \ | |
143 | || (sc) == scRData \ | |
144 | || (sc) == scPData \ | |
145 | || (sc) == scXData) | |
146 | #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon) | |
0e931cf0 JB |
147 | #define SC_IS_BSS(sc) ((sc) == scBss) |
148 | #define SC_IS_SBSS(sc) ((sc) == scSBss) | |
c906108c | 149 | #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined) |
c906108c | 150 | \f |
c906108c SS |
151 | /* Various complaints about symbol reading that don't abort the process */ |
152 | ||
153 | static struct complaint bad_file_number_complaint = | |
154 | {"bad file number %d", 0, 0}; | |
155 | ||
156 | static struct complaint index_complaint = | |
157 | {"bad aux index at symbol %s", 0, 0}; | |
158 | ||
159 | static struct complaint aux_index_complaint = | |
160 | {"bad proc end in aux found from symbol %s", 0, 0}; | |
161 | ||
162 | static struct complaint block_index_complaint = | |
163 | {"bad aux index at block symbol %s", 0, 0}; | |
164 | ||
165 | static struct complaint unknown_ext_complaint = | |
166 | {"unknown external symbol %s", 0, 0}; | |
167 | ||
168 | static struct complaint unknown_sym_complaint = | |
169 | {"unknown local symbol %s", 0, 0}; | |
170 | ||
171 | static struct complaint unknown_st_complaint = | |
172 | {"with type %d", 0, 0}; | |
173 | ||
174 | static struct complaint block_overflow_complaint = | |
175 | {"block containing %s overfilled", 0, 0}; | |
176 | ||
177 | static struct complaint basic_type_complaint = | |
178 | {"cannot map ECOFF basic type 0x%x for %s", 0, 0}; | |
179 | ||
180 | static struct complaint unknown_type_qual_complaint = | |
181 | {"unknown type qualifier 0x%x", 0, 0}; | |
182 | ||
183 | static struct complaint array_index_type_complaint = | |
184 | {"illegal array index type for %s, assuming int", 0, 0}; | |
185 | ||
186 | static struct complaint bad_tag_guess_complaint = | |
187 | {"guessed tag type of %s incorrectly", 0, 0}; | |
188 | ||
189 | static struct complaint block_member_complaint = | |
190 | {"declaration block contains unhandled symbol type %d", 0, 0}; | |
191 | ||
192 | static struct complaint stEnd_complaint = | |
193 | {"stEnd with storage class %d not handled", 0, 0}; | |
194 | ||
195 | static struct complaint unknown_mdebug_symtype_complaint = | |
196 | {"unknown symbol type 0x%x", 0, 0}; | |
197 | ||
198 | static struct complaint stab_unknown_complaint = | |
199 | {"unknown stabs symbol %s", 0, 0}; | |
200 | ||
201 | static struct complaint pdr_for_nonsymbol_complaint = | |
202 | {"PDR for %s, but no symbol", 0, 0}; | |
203 | ||
204 | static struct complaint pdr_static_symbol_complaint = | |
205 | {"can't handle PDR for static proc at 0x%lx", 0, 0}; | |
206 | ||
207 | static struct complaint bad_setjmp_pdr_complaint = | |
208 | {"fixing bad setjmp PDR from libc", 0, 0}; | |
209 | ||
210 | static struct complaint bad_fbitfield_complaint = | |
211 | {"can't handle TIR fBitfield for %s", 0, 0}; | |
212 | ||
213 | static struct complaint bad_continued_complaint = | |
214 | {"illegal TIR continued for %s", 0, 0}; | |
215 | ||
216 | static struct complaint bad_rfd_entry_complaint = | |
217 | {"bad rfd entry for %s: file %d, index %d", 0, 0}; | |
218 | ||
219 | static struct complaint unexpected_type_code_complaint = | |
220 | {"unexpected type code for %s", 0, 0}; | |
221 | ||
222 | static struct complaint unable_to_cross_ref_complaint = | |
223 | {"unable to cross ref btTypedef for %s", 0, 0}; | |
224 | ||
225 | static struct complaint bad_indirect_xref_complaint = | |
226 | {"unable to cross ref btIndirect for %s", 0, 0}; | |
227 | ||
228 | static struct complaint illegal_forward_tq0_complaint = | |
229 | {"illegal tq0 in forward typedef for %s", 0, 0}; | |
230 | ||
231 | static struct complaint illegal_forward_bt_complaint = | |
232 | {"illegal bt %d in forward typedef for %s", 0, 0}; | |
233 | ||
234 | static struct complaint bad_linetable_guess_complaint = | |
235 | {"guessed size of linetable for %s incorrectly", 0, 0}; | |
236 | ||
237 | static struct complaint bad_ext_ifd_complaint = | |
238 | {"bad ifd for external symbol: %d (max %d)", 0, 0}; | |
239 | ||
240 | static struct complaint bad_ext_iss_complaint = | |
241 | {"bad iss for external symbol: %ld (max %ld)", 0, 0}; | |
242 | ||
243 | /* Macros and extra defs */ | |
244 | ||
245 | /* Puns: hard to find whether -g was used and how */ | |
246 | ||
247 | #define MIN_GLEVEL GLEVEL_0 | |
248 | #define compare_glevel(a,b) \ | |
249 | (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \ | |
250 | ((b) == GLEVEL_3) ? -1 : (int)((b) - (a))) | |
251 | \f | |
252 | /* Things that really are local to this module */ | |
253 | ||
254 | /* Remember what we deduced to be the source language of this psymtab. */ | |
255 | ||
256 | static enum language psymtab_language = language_unknown; | |
257 | ||
258 | /* Current BFD. */ | |
259 | ||
260 | static bfd *cur_bfd; | |
261 | ||
262 | /* How to parse debugging information for CUR_BFD. */ | |
263 | ||
264 | static const struct ecoff_debug_swap *debug_swap; | |
265 | ||
266 | /* Pointers to debugging information for CUR_BFD. */ | |
267 | ||
268 | static struct ecoff_debug_info *debug_info; | |
269 | ||
270 | /* Pointer to current file decriptor record, and its index */ | |
271 | ||
272 | static FDR *cur_fdr; | |
273 | static int cur_fd; | |
274 | ||
275 | /* Index of current symbol */ | |
276 | ||
277 | static int cur_sdx; | |
278 | ||
279 | /* Note how much "debuggable" this image is. We would like | |
280 | to see at least one FDR with full symbols */ | |
281 | ||
282 | static int max_gdbinfo; | |
283 | static int max_glevel; | |
284 | ||
285 | /* When examining .o files, report on undefined symbols */ | |
286 | ||
287 | static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs; | |
288 | ||
289 | /* Pseudo symbol to use when putting stabs into the symbol table. */ | |
290 | ||
291 | static char stabs_symbol[] = STABS_SYMBOL; | |
292 | ||
293 | /* Types corresponding to mdebug format bt* basic types. */ | |
294 | ||
295 | static struct type *mdebug_type_void; | |
296 | static struct type *mdebug_type_char; | |
297 | static struct type *mdebug_type_short; | |
298 | static struct type *mdebug_type_int_32; | |
299 | #define mdebug_type_int mdebug_type_int_32 | |
300 | static struct type *mdebug_type_int_64; | |
301 | static struct type *mdebug_type_long_32; | |
302 | static struct type *mdebug_type_long_64; | |
303 | static struct type *mdebug_type_long_long_64; | |
304 | static struct type *mdebug_type_unsigned_char; | |
305 | static struct type *mdebug_type_unsigned_short; | |
306 | static struct type *mdebug_type_unsigned_int_32; | |
307 | static struct type *mdebug_type_unsigned_int_64; | |
308 | static struct type *mdebug_type_unsigned_long_32; | |
309 | static struct type *mdebug_type_unsigned_long_64; | |
310 | static struct type *mdebug_type_unsigned_long_long_64; | |
311 | static struct type *mdebug_type_adr_32; | |
312 | static struct type *mdebug_type_adr_64; | |
313 | static struct type *mdebug_type_float; | |
314 | static struct type *mdebug_type_double; | |
315 | static struct type *mdebug_type_complex; | |
316 | static struct type *mdebug_type_double_complex; | |
317 | static struct type *mdebug_type_fixed_dec; | |
318 | static struct type *mdebug_type_float_dec; | |
319 | static struct type *mdebug_type_string; | |
320 | ||
321 | /* Types for symbols from files compiled without debugging info. */ | |
322 | ||
323 | static struct type *nodebug_func_symbol_type; | |
324 | static struct type *nodebug_var_symbol_type; | |
325 | ||
326 | /* Nonzero if we have seen ecoff debugging info for a file. */ | |
327 | ||
328 | static int found_ecoff_debugging_info; | |
329 | ||
330 | /* Forward declarations */ | |
331 | ||
12b9c64f AO |
332 | static int upgrade_type (int, struct type **, int, union aux_ext *, |
333 | int, char *); | |
c906108c | 334 | |
a14ed312 | 335 | static void parse_partial_symbols (struct objfile *); |
c906108c | 336 | |
a14ed312 | 337 | static int has_opaque_xref (FDR *, SYMR *); |
c906108c | 338 | |
12b9c64f AO |
339 | static int cross_ref (int, union aux_ext *, struct type **, enum type_code, |
340 | char **, int, char *); | |
c906108c | 341 | |
a14ed312 | 342 | static struct symbol *new_symbol (char *); |
c906108c | 343 | |
a14ed312 | 344 | static struct type *new_type (char *); |
c906108c | 345 | |
a14ed312 | 346 | static struct block *new_block (int); |
c906108c | 347 | |
a14ed312 | 348 | static struct symtab *new_symtab (char *, int, int, struct objfile *); |
c906108c | 349 | |
a14ed312 | 350 | static struct linetable *new_linetable (int); |
c906108c | 351 | |
a14ed312 | 352 | static struct blockvector *new_bvect (int); |
c906108c | 353 | |
a14ed312 KB |
354 | static struct type *parse_type (int, union aux_ext *, unsigned int, int *, |
355 | int, char *); | |
c906108c | 356 | |
a14ed312 KB |
357 | static struct symbol *mylookup_symbol (char *, struct block *, namespace_enum, |
358 | enum address_class); | |
c906108c | 359 | |
a14ed312 | 360 | static struct block *shrink_block (struct block *, struct symtab *); |
c906108c | 361 | |
a14ed312 | 362 | static void sort_blocks (struct symtab *); |
c906108c | 363 | |
a14ed312 | 364 | static struct partial_symtab *new_psymtab (char *, struct objfile *); |
c906108c | 365 | |
a14ed312 | 366 | static void psymtab_to_symtab_1 (struct partial_symtab *, char *); |
c906108c | 367 | |
a14ed312 | 368 | static void add_block (struct block *, struct symtab *); |
c906108c | 369 | |
a14ed312 | 370 | static void add_symbol (struct symbol *, struct block *); |
c906108c | 371 | |
a14ed312 | 372 | static int add_line (struct linetable *, int, CORE_ADDR, int); |
c906108c | 373 | |
a14ed312 | 374 | static struct linetable *shrink_linetable (struct linetable *); |
c906108c | 375 | |
12b9c64f AO |
376 | static void handle_psymbol_enumerators (struct objfile *, FDR *, int, |
377 | CORE_ADDR); | |
c906108c | 378 | |
a14ed312 | 379 | static char *mdebug_next_symbol_text (struct objfile *); |
c906108c SS |
380 | \f |
381 | /* Address bounds for the signal trampoline in inferior, if any */ | |
382 | ||
383 | CORE_ADDR sigtramp_address, sigtramp_end; | |
384 | ||
385 | /* Allocate zeroed memory */ | |
386 | ||
12b9c64f | 387 | static void * |
fba45db2 | 388 | xzalloc (unsigned int size) |
c906108c | 389 | { |
12b9c64f | 390 | void *p = xmalloc (size); |
c906108c SS |
391 | |
392 | memset (p, 0, size); | |
393 | return p; | |
394 | } | |
395 | ||
396 | /* Exported procedure: Builds a symtab from the PST partial one. | |
397 | Restores the environment in effect when PST was created, delegates | |
398 | most of the work to an ancillary procedure, and sorts | |
399 | and reorders the symtab list at the end */ | |
400 | ||
401 | static void | |
fba45db2 | 402 | mdebug_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
403 | { |
404 | ||
405 | if (!pst) | |
406 | return; | |
407 | ||
408 | if (info_verbose) | |
409 | { | |
410 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
411 | gdb_flush (gdb_stdout); | |
412 | } | |
413 | ||
414 | next_symbol_text_func = mdebug_next_symbol_text; | |
415 | ||
416 | psymtab_to_symtab_1 (pst, pst->filename); | |
417 | ||
418 | /* Match with global symbols. This only needs to be done once, | |
419 | after all of the symtabs and dependencies have been read in. */ | |
420 | scan_file_globals (pst->objfile); | |
421 | ||
422 | if (info_verbose) | |
423 | printf_filtered ("done.\n"); | |
424 | } | |
425 | \f | |
426 | /* File-level interface functions */ | |
427 | ||
428 | /* Find a file descriptor given its index RF relative to a file CF */ | |
429 | ||
430 | static FDR * | |
fba45db2 | 431 | get_rfd (int cf, int rf) |
c906108c SS |
432 | { |
433 | FDR *fdrs; | |
434 | register FDR *f; | |
435 | RFDT rfd; | |
436 | ||
437 | fdrs = debug_info->fdr; | |
438 | f = fdrs + cf; | |
439 | /* Object files do not have the RFD table, all refs are absolute */ | |
440 | if (f->rfdBase == 0) | |
441 | return fdrs + rf; | |
442 | (*debug_swap->swap_rfd_in) (cur_bfd, | |
c5aa993b JM |
443 | ((char *) debug_info->external_rfd |
444 | + ((f->rfdBase + rf) | |
445 | * debug_swap->external_rfd_size)), | |
446 | &rfd); | |
c906108c SS |
447 | return fdrs + rfd; |
448 | } | |
449 | ||
450 | /* Return a safer print NAME for a file descriptor */ | |
451 | ||
452 | static char * | |
fba45db2 | 453 | fdr_name (FDR *f) |
c906108c SS |
454 | { |
455 | if (f->rss == -1) | |
456 | return "<stripped file>"; | |
457 | if (f->rss == 0) | |
458 | return "<NFY>"; | |
459 | return debug_info->ss + f->issBase + f->rss; | |
460 | } | |
461 | ||
462 | ||
463 | /* Read in and parse the symtab of the file OBJFILE. Symbols from | |
464 | different sections are relocated via the SECTION_OFFSETS. */ | |
465 | ||
466 | void | |
fba45db2 KB |
467 | mdebug_build_psymtabs (struct objfile *objfile, |
468 | const struct ecoff_debug_swap *swap, | |
469 | struct ecoff_debug_info *info) | |
c906108c SS |
470 | { |
471 | cur_bfd = objfile->obfd; | |
472 | debug_swap = swap; | |
473 | debug_info = info; | |
474 | ||
d3d55eeb EZ |
475 | stabsread_new_init (); |
476 | buildsym_new_init (); | |
477 | free_header_files (); | |
478 | init_header_files (); | |
479 | ||
c906108c SS |
480 | /* Make sure all the FDR information is swapped in. */ |
481 | if (info->fdr == (FDR *) NULL) | |
482 | { | |
483 | char *fdr_src; | |
484 | char *fdr_end; | |
485 | FDR *fdr_ptr; | |
486 | ||
487 | info->fdr = (FDR *) obstack_alloc (&objfile->psymbol_obstack, | |
488 | (info->symbolic_header.ifdMax | |
489 | * sizeof (FDR))); | |
490 | fdr_src = info->external_fdr; | |
491 | fdr_end = (fdr_src | |
492 | + info->symbolic_header.ifdMax * swap->external_fdr_size); | |
493 | fdr_ptr = info->fdr; | |
494 | for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++) | |
495 | (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr); | |
496 | } | |
497 | ||
d4f3574e | 498 | parse_partial_symbols (objfile); |
c906108c | 499 | |
3973eadd JB |
500 | /* Take the text ranges the partial symbol scanner computed for each |
501 | of the psymtabs and convert it into the canonical form for | |
502 | psymtabs. */ | |
503 | { | |
504 | struct partial_symtab *p; | |
505 | ||
506 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
507 | { | |
508 | p->textlow = TEXTLOW (p); | |
509 | p->texthigh = TEXTHIGH (p); | |
510 | } | |
511 | } | |
512 | ||
c906108c SS |
513 | #if 0 |
514 | /* Check to make sure file was compiled with -g. If not, warn the | |
515 | user of this limitation. */ | |
516 | if (compare_glevel (max_glevel, GLEVEL_2) < 0) | |
517 | { | |
518 | if (max_gdbinfo == 0) | |
519 | printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n", | |
c5aa993b | 520 | objfile->name); |
c906108c SS |
521 | printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n"); |
522 | gdb_flush (gdb_stdout); | |
523 | } | |
524 | #endif | |
525 | } | |
526 | \f | |
527 | /* Local utilities */ | |
528 | ||
529 | /* Map of FDR indexes to partial symtabs */ | |
530 | ||
531 | struct pst_map | |
532 | { | |
533 | struct partial_symtab *pst; /* the psymtab proper */ | |
534 | long n_globals; /* exported globals (external symbols) */ | |
535 | long globals_offset; /* cumulative */ | |
536 | }; | |
537 | ||
538 | ||
539 | /* Utility stack, used to nest procedures and blocks properly. | |
540 | It is a doubly linked list, to avoid too many alloc/free. | |
541 | Since we might need it quite a few times it is NOT deallocated | |
542 | after use. */ | |
543 | ||
544 | static struct parse_stack | |
c5aa993b JM |
545 | { |
546 | struct parse_stack *next, *prev; | |
547 | struct symtab *cur_st; /* Current symtab. */ | |
548 | struct block *cur_block; /* Block in it. */ | |
549 | ||
550 | /* What are we parsing. stFile, or stBlock are for files and | |
551 | blocks. stProc or stStaticProc means we have seen the start of a | |
552 | procedure, but not the start of the block within in. When we see | |
553 | the start of that block, we change it to stNil, without pushing a | |
554 | new block, i.e. stNil means both a procedure and a block. */ | |
555 | ||
556 | int blocktype; | |
557 | ||
558 | int maxsyms; /* Max symbols in this block. */ | |
559 | struct type *cur_type; /* Type we parse fields for. */ | |
560 | int cur_field; /* Field number in cur_type. */ | |
561 | CORE_ADDR procadr; /* Start addres of this procedure */ | |
562 | int numargs; /* Its argument count */ | |
563 | } | |
c906108c SS |
564 | |
565 | *top_stack; /* Top stack ptr */ | |
566 | ||
567 | ||
568 | /* Enter a new lexical context */ | |
569 | ||
570 | static void | |
fba45db2 | 571 | push_parse_stack (void) |
c906108c SS |
572 | { |
573 | struct parse_stack *new; | |
574 | ||
575 | /* Reuse frames if possible */ | |
576 | if (top_stack && top_stack->prev) | |
577 | new = top_stack->prev; | |
578 | else | |
579 | new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack)); | |
580 | /* Initialize new frame with previous content */ | |
581 | if (top_stack) | |
582 | { | |
583 | register struct parse_stack *prev = new->prev; | |
584 | ||
585 | *new = *top_stack; | |
586 | top_stack->prev = new; | |
587 | new->prev = prev; | |
588 | new->next = top_stack; | |
589 | } | |
590 | top_stack = new; | |
591 | } | |
592 | ||
593 | /* Exit a lexical context */ | |
594 | ||
595 | static void | |
fba45db2 | 596 | pop_parse_stack (void) |
c906108c SS |
597 | { |
598 | if (!top_stack) | |
599 | return; | |
600 | if (top_stack->next) | |
601 | top_stack = top_stack->next; | |
602 | } | |
603 | ||
604 | ||
605 | /* Cross-references might be to things we haven't looked at | |
606 | yet, e.g. type references. To avoid too many type | |
607 | duplications we keep a quick fixup table, an array | |
608 | of lists of references indexed by file descriptor */ | |
609 | ||
610 | struct mdebug_pending | |
611 | { | |
612 | struct mdebug_pending *next; /* link */ | |
613 | char *s; /* the unswapped symbol */ | |
614 | struct type *t; /* its partial type descriptor */ | |
615 | }; | |
616 | ||
617 | ||
618 | /* The pending information is kept for an entire object file, and used | |
619 | to be in the sym_private field. I took it out when I split | |
620 | mdebugread from mipsread, because this might not be the only type | |
621 | of symbols read from an object file. Instead, we allocate the | |
622 | pending information table when we create the partial symbols, and | |
623 | we store a pointer to the single table in each psymtab. */ | |
624 | ||
625 | static struct mdebug_pending **pending_list; | |
626 | ||
627 | /* Check whether we already saw symbol SH in file FH */ | |
628 | ||
629 | static struct mdebug_pending * | |
fba45db2 | 630 | is_pending_symbol (FDR *fh, char *sh) |
c906108c SS |
631 | { |
632 | int f_idx = fh - debug_info->fdr; | |
633 | register struct mdebug_pending *p; | |
634 | ||
635 | /* Linear search is ok, list is typically no more than 10 deep */ | |
636 | for (p = pending_list[f_idx]; p; p = p->next) | |
637 | if (p->s == sh) | |
638 | break; | |
639 | return p; | |
640 | } | |
641 | ||
642 | /* Add a new symbol SH of type T */ | |
643 | ||
644 | static void | |
fba45db2 | 645 | add_pending (FDR *fh, char *sh, struct type *t) |
c906108c SS |
646 | { |
647 | int f_idx = fh - debug_info->fdr; | |
648 | struct mdebug_pending *p = is_pending_symbol (fh, sh); | |
649 | ||
650 | /* Make sure we do not make duplicates */ | |
651 | if (!p) | |
652 | { | |
653 | p = ((struct mdebug_pending *) | |
654 | obstack_alloc (¤t_objfile->psymbol_obstack, | |
655 | sizeof (struct mdebug_pending))); | |
656 | p->s = sh; | |
657 | p->t = t; | |
658 | p->next = pending_list[f_idx]; | |
659 | pending_list[f_idx] = p; | |
660 | } | |
661 | } | |
662 | \f | |
663 | ||
664 | /* Parsing Routines proper. */ | |
665 | ||
666 | /* Parse a single symbol. Mostly just make up a GDB symbol for it. | |
667 | For blocks, procedures and types we open a new lexical context. | |
668 | This is basically just a big switch on the symbol's type. Argument | |
669 | AX is the base pointer of aux symbols for this file (fh->iauxBase). | |
670 | EXT_SH points to the unswapped symbol, which is needed for struct, | |
671 | union, etc., types; it is NULL for an EXTR. BIGEND says whether | |
672 | aux symbols are big-endian or little-endian. Return count of | |
673 | SYMR's handled (normally one). */ | |
674 | ||
675 | static int | |
fba45db2 KB |
676 | parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend, |
677 | struct section_offsets *section_offsets, struct objfile *objfile) | |
c906108c SS |
678 | { |
679 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
12b9c64f | 680 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c SS |
681 | char *name; |
682 | struct symbol *s; | |
683 | struct block *b; | |
684 | struct mdebug_pending *pend; | |
685 | struct type *t; | |
686 | struct field *f; | |
687 | int count = 1; | |
688 | enum address_class class; | |
689 | TIR tir; | |
690 | long svalue = sh->value; | |
691 | int bitsize; | |
692 | ||
693 | if (ext_sh == (char *) NULL) | |
694 | name = debug_info->ssext + sh->iss; | |
695 | else | |
696 | name = debug_info->ss + cur_fdr->issBase + sh->iss; | |
697 | ||
698 | switch (sh->sc) | |
699 | { | |
700 | case scText: | |
701 | case scRConst: | |
702 | /* Do not relocate relative values. | |
c5aa993b JM |
703 | The value of a stEnd symbol is the displacement from the |
704 | corresponding start symbol value. | |
705 | The value of a stBlock symbol is the displacement from the | |
706 | procedure address. */ | |
c906108c | 707 | if (sh->st != stEnd && sh->st != stBlock) |
b8fbeb18 | 708 | sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
709 | break; |
710 | case scData: | |
711 | case scSData: | |
712 | case scRData: | |
713 | case scPData: | |
714 | case scXData: | |
b8fbeb18 | 715 | sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
716 | break; |
717 | case scBss: | |
718 | case scSBss: | |
b8fbeb18 | 719 | sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
720 | break; |
721 | } | |
722 | ||
723 | switch (sh->st) | |
724 | { | |
725 | case stNil: | |
726 | break; | |
727 | ||
728 | case stGlobal: /* external symbol, goes into global block */ | |
729 | class = LOC_STATIC; | |
730 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
731 | GLOBAL_BLOCK); | |
732 | s = new_symbol (name); | |
733 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
734 | goto data; | |
735 | ||
736 | case stStatic: /* static data, goes into current block. */ | |
737 | class = LOC_STATIC; | |
738 | b = top_stack->cur_block; | |
739 | s = new_symbol (name); | |
c5aa993b | 740 | if (SC_IS_COMMON (sh->sc)) |
c906108c SS |
741 | { |
742 | /* It is a FORTRAN common block. At least for SGI Fortran the | |
743 | address is not in the symbol; we need to fix it later in | |
744 | scan_file_globals. */ | |
745 | int bucket = hashname (SYMBOL_NAME (s)); | |
746 | SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket]; | |
747 | global_sym_chain[bucket] = s; | |
748 | } | |
749 | else | |
750 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
751 | goto data; | |
752 | ||
753 | case stLocal: /* local variable, goes into current block */ | |
754 | if (sh->sc == scRegister) | |
755 | { | |
756 | class = LOC_REGISTER; | |
757 | svalue = ECOFF_REG_TO_REGNUM (svalue); | |
758 | } | |
759 | else | |
760 | class = LOC_LOCAL; | |
761 | b = top_stack->cur_block; | |
762 | s = new_symbol (name); | |
763 | SYMBOL_VALUE (s) = svalue; | |
764 | ||
765 | data: /* Common code for symbols describing data */ | |
766 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
767 | SYMBOL_CLASS (s) = class; | |
768 | add_symbol (s, b); | |
769 | ||
770 | /* Type could be missing if file is compiled without debugging info. */ | |
c5aa993b | 771 | if (SC_IS_UNDEF (sh->sc) |
c906108c SS |
772 | || sh->sc == scNil || sh->index == indexNil) |
773 | SYMBOL_TYPE (s) = nodebug_var_symbol_type; | |
774 | else | |
775 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
776 | /* Value of a data symbol is its memory address */ | |
777 | break; | |
778 | ||
779 | case stParam: /* arg to procedure, goes into current block */ | |
780 | max_gdbinfo++; | |
781 | found_ecoff_debugging_info = 1; | |
782 | top_stack->numargs++; | |
783 | ||
784 | /* Special GNU C++ name. */ | |
785 | if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0) | |
786 | name = "this"; /* FIXME, not alloc'd in obstack */ | |
787 | s = new_symbol (name); | |
788 | ||
789 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
790 | switch (sh->sc) | |
791 | { | |
792 | case scRegister: | |
793 | /* Pass by value in register. */ | |
c5aa993b | 794 | SYMBOL_CLASS (s) = LOC_REGPARM; |
c906108c SS |
795 | svalue = ECOFF_REG_TO_REGNUM (svalue); |
796 | break; | |
797 | case scVar: | |
798 | /* Pass by reference on stack. */ | |
c5aa993b | 799 | SYMBOL_CLASS (s) = LOC_REF_ARG; |
c906108c SS |
800 | break; |
801 | case scVarRegister: | |
802 | /* Pass by reference in register. */ | |
c5aa993b | 803 | SYMBOL_CLASS (s) = LOC_REGPARM_ADDR; |
c906108c SS |
804 | svalue = ECOFF_REG_TO_REGNUM (svalue); |
805 | break; | |
806 | default: | |
807 | /* Pass by value on stack. */ | |
c5aa993b | 808 | SYMBOL_CLASS (s) = LOC_ARG; |
c906108c SS |
809 | break; |
810 | } | |
811 | SYMBOL_VALUE (s) = svalue; | |
812 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
813 | add_symbol (s, top_stack->cur_block); | |
814 | break; | |
815 | ||
816 | case stLabel: /* label, goes into current block */ | |
817 | s = new_symbol (name); | |
818 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; /* so that it can be used */ | |
819 | SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */ | |
820 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
821 | SYMBOL_TYPE (s) = mdebug_type_int; | |
822 | add_symbol (s, top_stack->cur_block); | |
823 | break; | |
824 | ||
825 | case stProc: /* Procedure, usually goes into global block */ | |
826 | case stStaticProc: /* Static procedure, goes into current block */ | |
827 | s = new_symbol (name); | |
828 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
829 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
830 | /* Type of the return value */ | |
c5aa993b | 831 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
832 | t = mdebug_type_int; |
833 | else | |
834 | { | |
835 | t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name); | |
0004e5a2 | 836 | if (STREQ (name, "malloc") && TYPE_CODE (t) == TYPE_CODE_VOID) |
c906108c SS |
837 | { |
838 | /* I don't know why, but, at least under Alpha GNU/Linux, | |
c5aa993b JM |
839 | when linking against a malloc without debugging |
840 | symbols, its read as a function returning void---this | |
841 | is bad because it means we cannot call functions with | |
842 | string arguments interactively; i.e., "call | |
843 | printf("howdy\n")" would fail with the error message | |
844 | "program has no memory available". To avoid this, we | |
845 | patch up the type and make it void* | |
846 | instead. (davidm@azstarnet.com) | |
847 | */ | |
c906108c SS |
848 | t = make_pointer_type (t, NULL); |
849 | } | |
850 | } | |
851 | b = top_stack->cur_block; | |
852 | if (sh->st == stProc) | |
853 | { | |
854 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
855 | /* The next test should normally be true, but provides a | |
856 | hook for nested functions (which we don't want to make | |
857 | global). */ | |
858 | if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) | |
859 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
860 | /* Irix 5 sometimes has duplicate names for the same | |
861 | function. We want to add such names up at the global | |
862 | level, not as a nested function. */ | |
863 | else if (sh->value == top_stack->procadr) | |
864 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
865 | } | |
866 | add_symbol (s, b); | |
867 | ||
868 | /* Make a type for the procedure itself */ | |
869 | SYMBOL_TYPE (s) = lookup_function_type (t); | |
870 | ||
871 | /* Create and enter a new lexical context */ | |
872 | b = new_block (top_stack->maxsyms); | |
873 | SYMBOL_BLOCK_VALUE (s) = b; | |
874 | BLOCK_FUNCTION (b) = s; | |
875 | BLOCK_START (b) = BLOCK_END (b) = sh->value; | |
876 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
877 | add_block (b, top_stack->cur_st); | |
878 | ||
879 | /* Not if we only have partial info */ | |
c5aa993b | 880 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
881 | break; |
882 | ||
883 | push_parse_stack (); | |
884 | top_stack->cur_block = b; | |
885 | top_stack->blocktype = sh->st; | |
886 | top_stack->cur_type = SYMBOL_TYPE (s); | |
887 | top_stack->cur_field = -1; | |
888 | top_stack->procadr = sh->value; | |
889 | top_stack->numargs = 0; | |
890 | break; | |
891 | ||
892 | /* Beginning of code for structure, union, and enum definitions. | |
c5aa993b | 893 | They all share a common set of local variables, defined here. */ |
c906108c SS |
894 | { |
895 | enum type_code type_code; | |
896 | char *ext_tsym; | |
897 | int nfields; | |
898 | long max_value; | |
899 | struct field *f; | |
900 | ||
901 | case stStruct: /* Start a block defining a struct type */ | |
902 | type_code = TYPE_CODE_STRUCT; | |
903 | goto structured_common; | |
904 | ||
905 | case stUnion: /* Start a block defining a union type */ | |
906 | type_code = TYPE_CODE_UNION; | |
907 | goto structured_common; | |
908 | ||
909 | case stEnum: /* Start a block defining an enum type */ | |
910 | type_code = TYPE_CODE_ENUM; | |
911 | goto structured_common; | |
912 | ||
913 | case stBlock: /* Either a lexical block, or some type */ | |
c5aa993b | 914 | if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc)) |
c906108c SS |
915 | goto case_stBlock_code; /* Lexical block */ |
916 | ||
917 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ | |
918 | ||
919 | /* Common code for handling struct, union, enum, and/or as-yet- | |
920 | unknown-type blocks of info about structured data. `type_code' | |
921 | has been set to the proper TYPE_CODE, if we know it. */ | |
922 | structured_common: | |
923 | found_ecoff_debugging_info = 1; | |
924 | push_parse_stack (); | |
925 | top_stack->blocktype = stBlock; | |
926 | ||
927 | /* First count the number of fields and the highest value. */ | |
928 | nfields = 0; | |
929 | max_value = 0; | |
930 | for (ext_tsym = ext_sh + external_sym_size; | |
931 | ; | |
932 | ext_tsym += external_sym_size) | |
933 | { | |
934 | SYMR tsym; | |
935 | ||
936 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
937 | ||
938 | switch (tsym.st) | |
939 | { | |
940 | case stEnd: | |
941 | goto end_of_fields; | |
942 | ||
943 | case stMember: | |
944 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
945 | { |
946 | /* If the type of the member is Nil (or Void), | |
947 | without qualifiers, assume the tag is an | |
948 | enumeration. | |
949 | Alpha cc -migrate enums are recognized by a zero | |
950 | index and a zero symbol value. | |
951 | DU 4.0 cc enums are recognized by a member type of | |
952 | btEnum without qualifiers and a zero symbol value. */ | |
953 | if (tsym.index == indexNil | |
954 | || (tsym.index == 0 && sh->value == 0)) | |
955 | type_code = TYPE_CODE_ENUM; | |
956 | else | |
957 | { | |
958 | (*debug_swap->swap_tir_in) (bigend, | |
959 | &ax[tsym.index].a_ti, | |
960 | &tir); | |
961 | if ((tir.bt == btNil || tir.bt == btVoid | |
962 | || (tir.bt == btEnum && sh->value == 0)) | |
963 | && tir.tq0 == tqNil) | |
964 | type_code = TYPE_CODE_ENUM; | |
965 | } | |
966 | } | |
c906108c SS |
967 | nfields++; |
968 | if (tsym.value > max_value) | |
969 | max_value = tsym.value; | |
970 | break; | |
971 | ||
972 | case stBlock: | |
973 | case stUnion: | |
974 | case stEnum: | |
975 | case stStruct: | |
976 | { | |
977 | #if 0 | |
978 | /* This is a no-op; is it trying to tell us something | |
979 | we should be checking? */ | |
c5aa993b | 980 | if (tsym.sc == scVariant); /*UNIMPLEMENTED */ |
c906108c SS |
981 | #endif |
982 | if (tsym.index != 0) | |
983 | { | |
984 | /* This is something like a struct within a | |
c5aa993b JM |
985 | struct. Skip over the fields of the inner |
986 | struct. The -1 is because the for loop will | |
987 | increment ext_tsym. */ | |
c906108c SS |
988 | ext_tsym = ((char *) debug_info->external_sym |
989 | + ((cur_fdr->isymBase + tsym.index - 1) | |
990 | * external_sym_size)); | |
991 | } | |
992 | } | |
993 | break; | |
994 | ||
995 | case stTypedef: | |
996 | /* mips cc puts out a typedef for struct x if it is not yet | |
997 | defined when it encounters | |
998 | struct y { struct x *xp; }; | |
999 | Just ignore it. */ | |
1000 | break; | |
1001 | ||
1002 | case stIndirect: | |
1003 | /* Irix5 cc puts out a stIndirect for struct x if it is not | |
1004 | yet defined when it encounters | |
1005 | struct y { struct x *xp; }; | |
1006 | Just ignore it. */ | |
1007 | break; | |
1008 | ||
1009 | default: | |
1010 | complain (&block_member_complaint, tsym.st); | |
1011 | } | |
1012 | } | |
1013 | end_of_fields:; | |
1014 | ||
1015 | /* In an stBlock, there is no way to distinguish structs, | |
1016 | unions, and enums at this point. This is a bug in the | |
1017 | original design (that has been fixed with the recent | |
1018 | addition of the stStruct, stUnion, and stEnum symbol | |
1019 | types.) The way you can tell is if/when you see a variable | |
1020 | or field of that type. In that case the variable's type | |
1021 | (in the AUX table) says if the type is struct, union, or | |
1022 | enum, and points back to the stBlock here. So you can | |
1023 | patch the tag kind up later - but only if there actually is | |
1024 | a variable or field of that type. | |
1025 | ||
1026 | So until we know for sure, we will guess at this point. | |
1027 | The heuristic is: | |
1028 | If the first member has index==indexNil or a void type, | |
1029 | assume we have an enumeration. | |
1030 | Otherwise, if there is more than one member, and all | |
1031 | the members have offset 0, assume we have a union. | |
1032 | Otherwise, assume we have a struct. | |
1033 | ||
1034 | The heuristic could guess wrong in the case of of an | |
1035 | enumeration with no members or a union with one (or zero) | |
1036 | members, or when all except the last field of a struct have | |
1037 | width zero. These are uncommon and/or illegal situations, | |
1038 | and in any case guessing wrong probably doesn't matter | |
1039 | much. | |
1040 | ||
1041 | But if we later do find out we were wrong, we fixup the tag | |
1042 | kind. Members of an enumeration must be handled | |
1043 | differently from struct/union fields, and that is harder to | |
1044 | patch up, but luckily we shouldn't need to. (If there are | |
1045 | any enumeration members, we can tell for sure it's an enum | |
1046 | here.) */ | |
1047 | ||
1048 | if (type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
1049 | { |
1050 | if (nfields > 1 && max_value == 0) | |
1051 | type_code = TYPE_CODE_UNION; | |
1052 | else | |
1053 | type_code = TYPE_CODE_STRUCT; | |
1054 | } | |
c906108c SS |
1055 | |
1056 | /* Create a new type or use the pending type. */ | |
1057 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1058 | if (pend == (struct mdebug_pending *) NULL) | |
1059 | { | |
1060 | t = new_type (NULL); | |
1061 | add_pending (cur_fdr, ext_sh, t); | |
1062 | } | |
1063 | else | |
1064 | t = pend->t; | |
1065 | ||
1066 | /* Do not set the tag name if it is a compiler generated tag name | |
1067 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. | |
1068 | Alpha cc puts out an sh->iss of zero for those. */ | |
1069 | if (sh->iss == 0 || name[0] == '.' || name[0] == '\0') | |
1070 | TYPE_TAG_NAME (t) = NULL; | |
1071 | else | |
1072 | TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack, | |
1073 | "", "", name); | |
1074 | ||
1075 | TYPE_CODE (t) = type_code; | |
1076 | TYPE_LENGTH (t) = sh->value; | |
1077 | TYPE_NFIELDS (t) = nfields; | |
1078 | TYPE_FIELDS (t) = f = ((struct field *) | |
1079 | TYPE_ALLOC (t, | |
1080 | nfields * sizeof (struct field))); | |
1081 | ||
1082 | if (type_code == TYPE_CODE_ENUM) | |
1083 | { | |
1084 | int unsigned_enum = 1; | |
1085 | ||
1086 | /* This is a non-empty enum. */ | |
1087 | ||
1088 | /* DEC c89 has the number of enumerators in the sh.value field, | |
1089 | not the type length, so we have to compensate for that | |
1090 | incompatibility quirk. | |
1091 | This might do the wrong thing for an enum with one or two | |
1092 | enumerators and gcc -gcoff -fshort-enums, but these cases | |
1093 | are hopefully rare enough. | |
1094 | Alpha cc -migrate has a sh.value field of zero, we adjust | |
1095 | that too. */ | |
1096 | if (TYPE_LENGTH (t) == TYPE_NFIELDS (t) | |
1097 | || TYPE_LENGTH (t) == 0) | |
1098 | TYPE_LENGTH (t) = TARGET_INT_BIT / HOST_CHAR_BIT; | |
1099 | for (ext_tsym = ext_sh + external_sym_size; | |
1100 | ; | |
1101 | ext_tsym += external_sym_size) | |
1102 | { | |
1103 | SYMR tsym; | |
1104 | struct symbol *enum_sym; | |
1105 | ||
1106 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
1107 | ||
1108 | if (tsym.st != stMember) | |
1109 | break; | |
1110 | ||
1111 | FIELD_BITPOS (*f) = tsym.value; | |
1112 | FIELD_TYPE (*f) = t; | |
1113 | FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss; | |
1114 | FIELD_BITSIZE (*f) = 0; | |
1115 | ||
1116 | enum_sym = ((struct symbol *) | |
1117 | obstack_alloc (¤t_objfile->symbol_obstack, | |
1118 | sizeof (struct symbol))); | |
12b9c64f | 1119 | memset (enum_sym, 0, sizeof (struct symbol)); |
c906108c SS |
1120 | SYMBOL_NAME (enum_sym) = |
1121 | obsavestring (f->name, strlen (f->name), | |
1122 | ¤t_objfile->symbol_obstack); | |
1123 | SYMBOL_CLASS (enum_sym) = LOC_CONST; | |
1124 | SYMBOL_TYPE (enum_sym) = t; | |
1125 | SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE; | |
1126 | SYMBOL_VALUE (enum_sym) = tsym.value; | |
1127 | if (SYMBOL_VALUE (enum_sym) < 0) | |
1128 | unsigned_enum = 0; | |
1129 | add_symbol (enum_sym, top_stack->cur_block); | |
1130 | ||
1131 | /* Skip the stMembers that we've handled. */ | |
1132 | count++; | |
1133 | f++; | |
1134 | } | |
1135 | if (unsigned_enum) | |
1136 | TYPE_FLAGS (t) |= TYPE_FLAG_UNSIGNED; | |
1137 | } | |
1138 | /* make this the current type */ | |
1139 | top_stack->cur_type = t; | |
1140 | top_stack->cur_field = 0; | |
1141 | ||
1142 | /* Do not create a symbol for alpha cc unnamed structs. */ | |
1143 | if (sh->iss == 0) | |
1144 | break; | |
1145 | ||
1146 | /* gcc puts out an empty struct for an opaque struct definitions, | |
1147 | do not create a symbol for it either. */ | |
1148 | if (TYPE_NFIELDS (t) == 0) | |
1149 | { | |
1150 | TYPE_FLAGS (t) |= TYPE_FLAG_STUB; | |
1151 | break; | |
1152 | } | |
1153 | ||
1154 | s = new_symbol (name); | |
1155 | SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE; | |
1156 | SYMBOL_CLASS (s) = LOC_TYPEDEF; | |
1157 | SYMBOL_VALUE (s) = 0; | |
1158 | SYMBOL_TYPE (s) = t; | |
1159 | add_symbol (s, top_stack->cur_block); | |
1160 | break; | |
1161 | ||
1162 | /* End of local variables shared by struct, union, enum, and | |
1163 | block (as yet unknown struct/union/enum) processing. */ | |
1164 | } | |
1165 | ||
1166 | case_stBlock_code: | |
1167 | found_ecoff_debugging_info = 1; | |
1168 | /* beginnning of (code) block. Value of symbol | |
c5aa993b | 1169 | is the displacement from procedure start */ |
c906108c SS |
1170 | push_parse_stack (); |
1171 | ||
1172 | /* Do not start a new block if this is the outermost block of a | |
c5aa993b JM |
1173 | procedure. This allows the LOC_BLOCK symbol to point to the |
1174 | block with the local variables, so funcname::var works. */ | |
c906108c SS |
1175 | if (top_stack->blocktype == stProc |
1176 | || top_stack->blocktype == stStaticProc) | |
1177 | { | |
1178 | top_stack->blocktype = stNil; | |
1179 | break; | |
1180 | } | |
1181 | ||
1182 | top_stack->blocktype = stBlock; | |
1183 | b = new_block (top_stack->maxsyms); | |
1184 | BLOCK_START (b) = sh->value + top_stack->procadr; | |
1185 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1186 | top_stack->cur_block = b; | |
1187 | add_block (b, top_stack->cur_st); | |
1188 | break; | |
1189 | ||
1190 | case stEnd: /* end (of anything) */ | |
c5aa993b | 1191 | if (sh->sc == scInfo || SC_IS_COMMON (sh->sc)) |
c906108c SS |
1192 | { |
1193 | /* Finished with type */ | |
1194 | top_stack->cur_type = 0; | |
1195 | } | |
1196 | else if (sh->sc == scText && | |
1197 | (top_stack->blocktype == stProc || | |
1198 | top_stack->blocktype == stStaticProc)) | |
1199 | { | |
1200 | /* Finished with procedure */ | |
1201 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
1202 | struct mips_extra_func_info *e; | |
1203 | struct block *b; | |
1204 | struct type *ftype = top_stack->cur_type; | |
1205 | int i; | |
1206 | ||
1207 | BLOCK_END (top_stack->cur_block) += sh->value; /* size */ | |
1208 | ||
1209 | /* Make up special symbol to contain procedure specific info */ | |
1210 | s = new_symbol (MIPS_EFI_SYMBOL_NAME); | |
1211 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; | |
1212 | SYMBOL_CLASS (s) = LOC_CONST; | |
1213 | SYMBOL_TYPE (s) = mdebug_type_void; | |
1214 | e = ((struct mips_extra_func_info *) | |
1215 | obstack_alloc (¤t_objfile->symbol_obstack, | |
1216 | sizeof (struct mips_extra_func_info))); | |
12b9c64f | 1217 | memset (e, 0, sizeof (struct mips_extra_func_info)); |
c906108c SS |
1218 | SYMBOL_VALUE (s) = (long) e; |
1219 | e->numargs = top_stack->numargs; | |
1220 | e->pdr.framereg = -1; | |
1221 | add_symbol (s, top_stack->cur_block); | |
1222 | ||
1223 | /* Reallocate symbols, saving memory */ | |
1224 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); | |
1225 | ||
1226 | /* f77 emits proc-level with address bounds==[0,0], | |
1227 | So look for such child blocks, and patch them. */ | |
1228 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
1229 | { | |
1230 | struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i); | |
1231 | if (BLOCK_SUPERBLOCK (b_bad) == b | |
1232 | && BLOCK_START (b_bad) == top_stack->procadr | |
1233 | && BLOCK_END (b_bad) == top_stack->procadr) | |
1234 | { | |
1235 | BLOCK_START (b_bad) = BLOCK_START (b); | |
1236 | BLOCK_END (b_bad) = BLOCK_END (b); | |
1237 | } | |
1238 | } | |
1239 | ||
1240 | if (TYPE_NFIELDS (ftype) <= 0) | |
1241 | { | |
1242 | /* No parameter type information is recorded with the function's | |
c5aa993b | 1243 | type. Set that from the type of the parameter symbols. */ |
c906108c SS |
1244 | int nparams = top_stack->numargs; |
1245 | int iparams; | |
1246 | struct symbol *sym; | |
1247 | ||
1248 | if (nparams > 0) | |
1249 | { | |
1250 | TYPE_NFIELDS (ftype) = nparams; | |
1251 | TYPE_FIELDS (ftype) = (struct field *) | |
1252 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
c5aa993b | 1253 | |
c906108c SS |
1254 | for (i = iparams = 0; iparams < nparams; i++) |
1255 | { | |
1256 | sym = BLOCK_SYM (b, i); | |
1257 | switch (SYMBOL_CLASS (sym)) | |
1258 | { | |
1259 | case LOC_ARG: | |
1260 | case LOC_REF_ARG: | |
1261 | case LOC_REGPARM: | |
1262 | case LOC_REGPARM_ADDR: | |
1263 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); | |
8176bb6d | 1264 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c SS |
1265 | iparams++; |
1266 | break; | |
1267 | default: | |
1268 | break; | |
1269 | } | |
1270 | } | |
1271 | } | |
1272 | } | |
1273 | } | |
1274 | else if (sh->sc == scText && top_stack->blocktype == stBlock) | |
1275 | { | |
1276 | /* End of (code) block. The value of the symbol is the | |
1277 | displacement from the procedure`s start address of the | |
1278 | end of this block. */ | |
1279 | BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr; | |
1280 | shrink_block (top_stack->cur_block, top_stack->cur_st); | |
1281 | } | |
1282 | else if (sh->sc == scText && top_stack->blocktype == stNil) | |
1283 | { | |
1284 | /* End of outermost block. Pop parse stack and ignore. The | |
1285 | following stEnd of stProc will take care of the block. */ | |
1286 | ; | |
1287 | } | |
1288 | else if (sh->sc == scText && top_stack->blocktype == stFile) | |
1289 | { | |
1290 | /* End of file. Pop parse stack and ignore. Higher | |
1291 | level code deals with this. */ | |
1292 | ; | |
1293 | } | |
1294 | else | |
1295 | complain (&stEnd_complaint, sh->sc); | |
1296 | ||
1297 | pop_parse_stack (); /* restore previous lexical context */ | |
1298 | break; | |
1299 | ||
1300 | case stMember: /* member of struct or union */ | |
1301 | f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++]; | |
1302 | FIELD_NAME (*f) = name; | |
1303 | FIELD_BITPOS (*f) = sh->value; | |
1304 | bitsize = 0; | |
1305 | FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name); | |
1306 | FIELD_BITSIZE (*f) = bitsize; | |
1307 | break; | |
1308 | ||
1309 | case stIndirect: /* forward declaration on Irix5 */ | |
1310 | /* Forward declarations from Irix5 cc are handled by cross_ref, | |
c5aa993b | 1311 | skip them. */ |
c906108c SS |
1312 | break; |
1313 | ||
1314 | case stTypedef: /* type definition */ | |
1315 | found_ecoff_debugging_info = 1; | |
1316 | ||
1317 | /* Typedefs for forward declarations and opaque structs from alpha cc | |
c5aa993b | 1318 | are handled by cross_ref, skip them. */ |
c906108c SS |
1319 | if (sh->iss == 0) |
1320 | break; | |
1321 | ||
1322 | /* Parse the type or use the pending type. */ | |
1323 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1324 | if (pend == (struct mdebug_pending *) NULL) | |
1325 | { | |
c5aa993b | 1326 | t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name); |
c906108c SS |
1327 | add_pending (cur_fdr, ext_sh, t); |
1328 | } | |
1329 | else | |
1330 | t = pend->t; | |
1331 | ||
1332 | /* mips cc puts out a typedef with the name of the struct for forward | |
c5aa993b JM |
1333 | declarations. These should not go into the symbol table and |
1334 | TYPE_NAME should not be set for them. | |
1335 | They can't be distinguished from an intentional typedef to | |
1336 | the same name however: | |
1337 | x.h: | |
1338 | struct x { int ix; int jx; }; | |
1339 | struct xx; | |
1340 | x.c: | |
1341 | typedef struct x x; | |
1342 | struct xx {int ixx; int jxx; }; | |
1343 | generates a cross referencing stTypedef for x and xx. | |
1344 | The user visible effect of this is that the type of a pointer | |
1345 | to struct foo sometimes is given as `foo *' instead of `struct foo *'. | |
1346 | The problem is fixed with alpha cc and Irix5 cc. */ | |
c906108c SS |
1347 | |
1348 | /* However if the typedef cross references to an opaque aggregate, it | |
c5aa993b | 1349 | is safe to omit it from the symbol table. */ |
c906108c SS |
1350 | |
1351 | if (has_opaque_xref (cur_fdr, sh)) | |
1352 | break; | |
1353 | s = new_symbol (name); | |
1354 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
1355 | SYMBOL_CLASS (s) = LOC_TYPEDEF; | |
1356 | SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block; | |
1357 | SYMBOL_TYPE (s) = t; | |
1358 | add_symbol (s, top_stack->cur_block); | |
1359 | ||
1360 | /* Incomplete definitions of structs should not get a name. */ | |
1361 | if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL | |
1362 | && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0 | |
c5aa993b | 1363 | || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT |
c906108c SS |
1364 | && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION))) |
1365 | { | |
1366 | if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR | |
1367 | || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC) | |
1368 | { | |
1369 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1370 | foo" or "function returning foo", we better not set |
1371 | the TYPE_NAME. If the program contains "typedef char | |
1372 | *caddr_t;", we don't want all variables of type char | |
1373 | * to print as caddr_t. This is not just a | |
1374 | consequence of GDB's type management; CC and GCC (at | |
1375 | least through version 2.4) both output variables of | |
1376 | either type char * or caddr_t with the type | |
1377 | refering to the stTypedef symbol for caddr_t. If a future | |
1378 | compiler cleans this up it GDB is not ready for it | |
1379 | yet, but if it becomes ready we somehow need to | |
1380 | disable this check (without breaking the PCC/GCC2.4 | |
1381 | case). | |
1382 | ||
1383 | Sigh. | |
1384 | ||
1385 | Fortunately, this check seems not to be necessary | |
1386 | for anything except pointers or functions. */ | |
c906108c SS |
1387 | } |
1388 | else | |
1389 | TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s); | |
1390 | } | |
1391 | break; | |
1392 | ||
1393 | case stFile: /* file name */ | |
1394 | push_parse_stack (); | |
1395 | top_stack->blocktype = sh->st; | |
1396 | break; | |
1397 | ||
1398 | /* I`ve never seen these for C */ | |
1399 | case stRegReloc: | |
1400 | break; /* register relocation */ | |
1401 | case stForward: | |
1402 | break; /* forwarding address */ | |
1403 | case stConstant: | |
1404 | break; /* constant */ | |
1405 | default: | |
1406 | complain (&unknown_mdebug_symtype_complaint, sh->st); | |
1407 | break; | |
1408 | } | |
1409 | ||
1410 | return count; | |
1411 | } | |
1412 | ||
1413 | /* Parse the type information provided in the raw AX entries for | |
1414 | the symbol SH. Return the bitfield size in BS, in case. | |
1415 | We must byte-swap the AX entries before we use them; BIGEND says whether | |
1416 | they are big-endian or little-endian (from fh->fBigendian). */ | |
1417 | ||
1418 | static struct type * | |
fba45db2 KB |
1419 | parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs, |
1420 | int bigend, char *sym_name) | |
c906108c SS |
1421 | { |
1422 | /* Null entries in this map are treated specially */ | |
1423 | static struct type **map_bt[] = | |
1424 | { | |
c5aa993b JM |
1425 | &mdebug_type_void, /* btNil */ |
1426 | &mdebug_type_adr_32, /* btAdr */ | |
1427 | &mdebug_type_char, /* btChar */ | |
1428 | &mdebug_type_unsigned_char, /* btUChar */ | |
1429 | &mdebug_type_short, /* btShort */ | |
c906108c | 1430 | &mdebug_type_unsigned_short, /* btUShort */ |
c5aa993b | 1431 | &mdebug_type_int_32, /* btInt */ |
c906108c | 1432 | &mdebug_type_unsigned_int_32, /* btUInt */ |
c5aa993b | 1433 | &mdebug_type_long_32, /* btLong */ |
c906108c | 1434 | &mdebug_type_unsigned_long_32, /* btULong */ |
c5aa993b JM |
1435 | &mdebug_type_float, /* btFloat */ |
1436 | &mdebug_type_double, /* btDouble */ | |
1437 | 0, /* btStruct */ | |
1438 | 0, /* btUnion */ | |
1439 | 0, /* btEnum */ | |
1440 | 0, /* btTypedef */ | |
1441 | 0, /* btRange */ | |
1442 | 0, /* btSet */ | |
1443 | &mdebug_type_complex, /* btComplex */ | |
c906108c | 1444 | &mdebug_type_double_complex, /* btDComplex */ |
c5aa993b JM |
1445 | 0, /* btIndirect */ |
1446 | &mdebug_type_fixed_dec, /* btFixedDec */ | |
1447 | &mdebug_type_float_dec, /* btFloatDec */ | |
1448 | &mdebug_type_string, /* btString */ | |
1449 | 0, /* btBit */ | |
1450 | 0, /* btPicture */ | |
1451 | &mdebug_type_void, /* btVoid */ | |
1452 | 0, /* DEC C++: Pointer to member */ | |
1453 | 0, /* DEC C++: Virtual function table */ | |
1454 | 0, /* DEC C++: Class (Record) */ | |
1455 | &mdebug_type_long_64, /* btLong64 */ | |
c906108c | 1456 | &mdebug_type_unsigned_long_64, /* btULong64 */ |
c5aa993b JM |
1457 | &mdebug_type_long_long_64, /* btLongLong64 */ |
1458 | &mdebug_type_unsigned_long_long_64, /* btULongLong64 */ | |
1459 | &mdebug_type_adr_64, /* btAdr64 */ | |
1460 | &mdebug_type_int_64, /* btInt64 */ | |
c906108c SS |
1461 | &mdebug_type_unsigned_int_64, /* btUInt64 */ |
1462 | }; | |
1463 | ||
1464 | TIR t[1]; | |
1465 | struct type *tp = 0; | |
1466 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1467 | ||
1468 | /* Handle undefined types, they have indexNil. */ | |
1469 | if (aux_index == indexNil) | |
1470 | return mdebug_type_int; | |
1471 | ||
1472 | /* Handle corrupt aux indices. */ | |
1473 | if (aux_index >= (debug_info->fdr + fd)->caux) | |
1474 | { | |
1475 | complain (&index_complaint, sym_name); | |
1476 | return mdebug_type_int; | |
1477 | } | |
1478 | ax += aux_index; | |
1479 | ||
1480 | /* Use aux as a type information record, map its basic type. */ | |
1481 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1482 | if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt))) | |
1483 | { | |
1484 | complain (&basic_type_complaint, t->bt, sym_name); | |
1485 | return mdebug_type_int; | |
1486 | } | |
1487 | if (map_bt[t->bt]) | |
1488 | { | |
1489 | tp = *map_bt[t->bt]; | |
1490 | } | |
1491 | else | |
1492 | { | |
1493 | tp = NULL; | |
1494 | /* Cannot use builtin types -- build our own */ | |
1495 | switch (t->bt) | |
1496 | { | |
1497 | case btStruct: | |
1498 | type_code = TYPE_CODE_STRUCT; | |
1499 | break; | |
1500 | case btUnion: | |
1501 | type_code = TYPE_CODE_UNION; | |
1502 | break; | |
1503 | case btEnum: | |
1504 | type_code = TYPE_CODE_ENUM; | |
1505 | break; | |
1506 | case btRange: | |
1507 | type_code = TYPE_CODE_RANGE; | |
1508 | break; | |
1509 | case btSet: | |
1510 | type_code = TYPE_CODE_SET; | |
1511 | break; | |
1512 | case btIndirect: | |
1513 | /* alpha cc -migrate uses this for typedefs. The true type will | |
1514 | be obtained by crossreferencing below. */ | |
1515 | type_code = TYPE_CODE_ERROR; | |
1516 | break; | |
1517 | case btTypedef: | |
1518 | /* alpha cc uses this for typedefs. The true type will be | |
1519 | obtained by crossreferencing below. */ | |
1520 | type_code = TYPE_CODE_ERROR; | |
1521 | break; | |
1522 | default: | |
1523 | complain (&basic_type_complaint, t->bt, sym_name); | |
1524 | return mdebug_type_int; | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | /* Move on to next aux */ | |
1529 | ax++; | |
1530 | ||
1531 | if (t->fBitfield) | |
1532 | { | |
1533 | int width = AUX_GET_WIDTH (bigend, ax); | |
1534 | ||
1535 | /* Inhibit core dumps with some cfront generated objects that | |
c5aa993b JM |
1536 | corrupt the TIR. */ |
1537 | if (bs == (int *) NULL) | |
c906108c SS |
1538 | { |
1539 | /* Alpha cc -migrate encodes char and unsigned char types | |
1540 | as short and unsigned short types with a field width of 8. | |
1541 | Enum types also have a field width which we ignore for now. */ | |
1542 | if (t->bt == btShort && width == 8) | |
1543 | tp = mdebug_type_char; | |
1544 | else if (t->bt == btUShort && width == 8) | |
1545 | tp = mdebug_type_unsigned_char; | |
1546 | else if (t->bt == btEnum) | |
1547 | ; | |
1548 | else | |
1549 | complain (&bad_fbitfield_complaint, sym_name); | |
1550 | } | |
1551 | else | |
c5aa993b | 1552 | *bs = width; |
c906108c SS |
1553 | ax++; |
1554 | } | |
1555 | ||
1556 | /* A btIndirect entry cross references to an aux entry containing | |
1557 | the type. */ | |
1558 | if (t->bt == btIndirect) | |
1559 | { | |
1560 | RNDXR rn[1]; | |
1561 | int rf; | |
1562 | FDR *xref_fh; | |
1563 | int xref_fd; | |
1564 | ||
1565 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
1566 | ax++; | |
1567 | if (rn->rfd == 0xfff) | |
1568 | { | |
1569 | rf = AUX_GET_ISYM (bigend, ax); | |
1570 | ax++; | |
1571 | } | |
1572 | else | |
1573 | rf = rn->rfd; | |
1574 | ||
1575 | if (rf == -1) | |
1576 | { | |
1577 | complain (&bad_indirect_xref_complaint, sym_name); | |
1578 | return mdebug_type_int; | |
1579 | } | |
1580 | xref_fh = get_rfd (fd, rf); | |
1581 | xref_fd = xref_fh - debug_info->fdr; | |
1582 | tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase, | |
c5aa993b | 1583 | rn->index, (int *) NULL, xref_fh->fBigendian, sym_name); |
c906108c SS |
1584 | } |
1585 | ||
1586 | /* All these types really point to some (common) MIPS type | |
1587 | definition, and only the type-qualifiers fully identify | |
1588 | them. We'll make the same effort at sharing. */ | |
1589 | if (t->bt == btStruct || | |
1590 | t->bt == btUnion || | |
1591 | t->bt == btEnum || | |
1592 | ||
c5aa993b JM |
1593 | /* btSet (I think) implies that the name is a tag name, not a typedef |
1594 | name. This apparently is a MIPS extension for C sets. */ | |
c906108c SS |
1595 | t->bt == btSet) |
1596 | { | |
1597 | char *name; | |
1598 | ||
1599 | /* Try to cross reference this type, build new type on failure. */ | |
1600 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1601 | if (tp == (struct type *) NULL) | |
1602 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
1603 | ||
1604 | /* DEC c89 produces cross references to qualified aggregate types, | |
c5aa993b | 1605 | dereference them. */ |
c906108c SS |
1606 | while (TYPE_CODE (tp) == TYPE_CODE_PTR |
1607 | || TYPE_CODE (tp) == TYPE_CODE_ARRAY) | |
0004e5a2 | 1608 | tp = TYPE_TARGET_TYPE (tp); |
c906108c SS |
1609 | |
1610 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1611 | Any type may be returned from cross_ref if file indirect entries |
1612 | are corrupted. */ | |
c906108c SS |
1613 | if (TYPE_CODE (tp) != TYPE_CODE_STRUCT |
1614 | && TYPE_CODE (tp) != TYPE_CODE_UNION | |
1615 | && TYPE_CODE (tp) != TYPE_CODE_ENUM) | |
1616 | { | |
1617 | complain (&unexpected_type_code_complaint, sym_name); | |
1618 | } | |
1619 | else | |
1620 | { | |
1621 | ||
1622 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
1623 | exception is if we guessed wrong re struct/union/enum. | |
1624 | But for struct vs. union a wrong guess is harmless, so | |
1625 | don't complain(). */ | |
1626 | if ((TYPE_CODE (tp) == TYPE_CODE_ENUM | |
1627 | && type_code != TYPE_CODE_ENUM) | |
1628 | || (TYPE_CODE (tp) != TYPE_CODE_ENUM | |
1629 | && type_code == TYPE_CODE_ENUM)) | |
1630 | { | |
1631 | complain (&bad_tag_guess_complaint, sym_name); | |
1632 | } | |
1633 | ||
1634 | if (TYPE_CODE (tp) != type_code) | |
1635 | { | |
1636 | TYPE_CODE (tp) = type_code; | |
1637 | } | |
1638 | ||
1639 | /* Do not set the tag name if it is a compiler generated tag name | |
c5aa993b | 1640 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ |
c906108c SS |
1641 | if (name[0] == '.' || name[0] == '\0') |
1642 | TYPE_TAG_NAME (tp) = NULL; | |
1643 | else if (TYPE_TAG_NAME (tp) == NULL | |
1644 | || !STREQ (TYPE_TAG_NAME (tp), name)) | |
1645 | TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name), | |
c5aa993b | 1646 | ¤t_objfile->type_obstack); |
c906108c SS |
1647 | } |
1648 | } | |
1649 | ||
1650 | /* All these types really point to some (common) MIPS type | |
1651 | definition, and only the type-qualifiers fully identify | |
1652 | them. We'll make the same effort at sharing. | |
1653 | FIXME: We are not doing any guessing on range types. */ | |
1654 | if (t->bt == btRange) | |
1655 | { | |
1656 | char *name; | |
1657 | ||
1658 | /* Try to cross reference this type, build new type on failure. */ | |
1659 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1660 | if (tp == (struct type *) NULL) | |
1661 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
1662 | ||
1663 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1664 | Any type may be returned from cross_ref if file indirect entries |
1665 | are corrupted. */ | |
c906108c SS |
1666 | if (TYPE_CODE (tp) != TYPE_CODE_RANGE) |
1667 | { | |
1668 | complain (&unexpected_type_code_complaint, sym_name); | |
1669 | } | |
1670 | else | |
1671 | { | |
1672 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
1673 | exception is if we guessed wrong re struct/union/enum. */ | |
1674 | if (TYPE_CODE (tp) != type_code) | |
1675 | { | |
1676 | complain (&bad_tag_guess_complaint, sym_name); | |
1677 | TYPE_CODE (tp) = type_code; | |
1678 | } | |
1679 | if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name)) | |
1680 | TYPE_NAME (tp) = obsavestring (name, strlen (name), | |
1681 | ¤t_objfile->type_obstack); | |
1682 | } | |
1683 | } | |
1684 | if (t->bt == btTypedef) | |
1685 | { | |
1686 | char *name; | |
1687 | ||
1688 | /* Try to cross reference this type, it should succeed. */ | |
1689 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1690 | if (tp == (struct type *) NULL) | |
1691 | { | |
1692 | complain (&unable_to_cross_ref_complaint, sym_name); | |
1693 | tp = mdebug_type_int; | |
1694 | } | |
1695 | } | |
1696 | ||
1697 | /* Deal with range types */ | |
1698 | if (t->bt == btRange) | |
1699 | { | |
1700 | TYPE_NFIELDS (tp) = 2; | |
1701 | TYPE_FIELDS (tp) = ((struct field *) | |
1702 | TYPE_ALLOC (tp, 2 * sizeof (struct field))); | |
1703 | TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"), | |
c5aa993b | 1704 | ¤t_objfile->type_obstack); |
c906108c SS |
1705 | TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax); |
1706 | ax++; | |
1707 | TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"), | |
c5aa993b | 1708 | ¤t_objfile->type_obstack); |
c906108c SS |
1709 | TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax); |
1710 | ax++; | |
1711 | } | |
1712 | ||
1713 | /* Parse all the type qualifiers now. If there are more | |
1714 | than 6 the game will continue in the next aux */ | |
1715 | ||
1716 | while (1) | |
1717 | { | |
1718 | #define PARSE_TQ(tq) \ | |
1719 | if (t->tq != tqNil) \ | |
1720 | ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \ | |
1721 | else \ | |
1722 | break; | |
1723 | ||
1724 | PARSE_TQ (tq0); | |
1725 | PARSE_TQ (tq1); | |
1726 | PARSE_TQ (tq2); | |
1727 | PARSE_TQ (tq3); | |
1728 | PARSE_TQ (tq4); | |
1729 | PARSE_TQ (tq5); | |
1730 | #undef PARSE_TQ | |
1731 | ||
1732 | /* mips cc 2.x and gcc never put out continued aux entries. */ | |
1733 | if (!t->continued) | |
1734 | break; | |
1735 | ||
1736 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1737 | ax++; | |
1738 | } | |
1739 | ||
1740 | /* Complain for illegal continuations due to corrupt aux entries. */ | |
1741 | if (t->continued) | |
1742 | complain (&bad_continued_complaint, sym_name); | |
c5aa993b | 1743 | |
c906108c SS |
1744 | return tp; |
1745 | } | |
1746 | ||
1747 | /* Make up a complex type from a basic one. Type is passed by | |
1748 | reference in TPP and side-effected as necessary. The type | |
1749 | qualifier TQ says how to handle the aux symbols at AX for | |
1750 | the symbol SX we are currently analyzing. BIGEND says whether | |
1751 | aux symbols are big-endian or little-endian. | |
1752 | Returns the number of aux symbols we parsed. */ | |
1753 | ||
1754 | static int | |
fba45db2 KB |
1755 | upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend, |
1756 | char *sym_name) | |
c906108c SS |
1757 | { |
1758 | int off; | |
1759 | struct type *t; | |
1760 | ||
1761 | /* Used in array processing */ | |
1762 | int rf, id; | |
1763 | FDR *fh; | |
1764 | struct type *range; | |
1765 | struct type *indx; | |
1766 | int lower, upper; | |
1767 | RNDXR rndx; | |
1768 | ||
1769 | switch (tq) | |
1770 | { | |
1771 | case tqPtr: | |
1772 | t = lookup_pointer_type (*tpp); | |
1773 | *tpp = t; | |
1774 | return 0; | |
1775 | ||
1776 | case tqProc: | |
1777 | t = lookup_function_type (*tpp); | |
1778 | *tpp = t; | |
1779 | return 0; | |
1780 | ||
1781 | case tqArray: | |
1782 | off = 0; | |
1783 | ||
1784 | /* Determine and record the domain type (type of index) */ | |
1785 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx); | |
1786 | id = rndx.index; | |
1787 | rf = rndx.rfd; | |
1788 | if (rf == 0xfff) | |
1789 | { | |
1790 | ax++; | |
1791 | rf = AUX_GET_ISYM (bigend, ax); | |
1792 | off++; | |
1793 | } | |
1794 | fh = get_rfd (fd, rf); | |
1795 | ||
1796 | indx = parse_type (fh - debug_info->fdr, | |
1797 | debug_info->external_aux + fh->iauxBase, | |
1798 | id, (int *) NULL, bigend, sym_name); | |
1799 | ||
1800 | /* The bounds type should be an integer type, but might be anything | |
c5aa993b | 1801 | else due to corrupt aux entries. */ |
c906108c SS |
1802 | if (TYPE_CODE (indx) != TYPE_CODE_INT) |
1803 | { | |
1804 | complain (&array_index_type_complaint, sym_name); | |
1805 | indx = mdebug_type_int; | |
1806 | } | |
1807 | ||
1808 | /* Get the bounds, and create the array type. */ | |
1809 | ax++; | |
1810 | lower = AUX_GET_DNLOW (bigend, ax); | |
1811 | ax++; | |
1812 | upper = AUX_GET_DNHIGH (bigend, ax); | |
1813 | ax++; | |
1814 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ | |
1815 | ||
1816 | range = create_range_type ((struct type *) NULL, indx, | |
1817 | lower, upper); | |
1818 | ||
1819 | t = create_array_type ((struct type *) NULL, *tpp, range); | |
1820 | ||
1821 | /* We used to fill in the supplied array element bitsize | |
c5aa993b JM |
1822 | here if the TYPE_LENGTH of the target type was zero. |
1823 | This happens for a `pointer to an array of anonymous structs', | |
1824 | but in this case the array element bitsize is also zero, | |
1825 | so nothing is gained. | |
1826 | And we used to check the TYPE_LENGTH of the target type against | |
1827 | the supplied array element bitsize. | |
1828 | gcc causes a mismatch for `pointer to array of object', | |
1829 | since the sdb directives it uses do not have a way of | |
1830 | specifying the bitsize, but it does no harm (the | |
1831 | TYPE_LENGTH should be correct) and we should be able to | |
1832 | ignore the erroneous bitsize from the auxiliary entry safely. | |
1833 | dbx seems to ignore it too. */ | |
c906108c SS |
1834 | |
1835 | /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH | |
c5aa993b | 1836 | problem. */ |
c906108c SS |
1837 | if (TYPE_LENGTH (*tpp) == 0) |
1838 | { | |
1839 | TYPE_FLAGS (t) |= TYPE_FLAG_TARGET_STUB; | |
1840 | } | |
1841 | ||
1842 | *tpp = t; | |
1843 | return 4 + off; | |
1844 | ||
1845 | case tqVol: | |
1846 | /* Volatile -- currently ignored */ | |
1847 | return 0; | |
1848 | ||
1849 | case tqConst: | |
1850 | /* Const -- currently ignored */ | |
1851 | return 0; | |
1852 | ||
1853 | default: | |
1854 | complain (&unknown_type_qual_complaint, tq); | |
1855 | return 0; | |
1856 | } | |
1857 | } | |
1858 | ||
1859 | ||
1860 | /* Parse a procedure descriptor record PR. Note that the procedure is | |
1861 | parsed _after_ the local symbols, now we just insert the extra | |
1862 | information we need into a MIPS_EFI_SYMBOL_NAME symbol that has | |
1863 | already been placed in the procedure's main block. Note also that | |
1864 | images that have been partially stripped (ld -x) have been deprived | |
1865 | of local symbols, and we have to cope with them here. FIRST_OFF is | |
1866 | the offset of the first procedure for this FDR; we adjust the | |
1867 | address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab | |
1868 | to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol | |
1869 | in question, or NULL to use top_stack->cur_block. */ | |
1870 | ||
a14ed312 | 1871 | static void parse_procedure (PDR *, struct symtab *, struct partial_symtab *); |
c906108c SS |
1872 | |
1873 | static void | |
fba45db2 KB |
1874 | parse_procedure (PDR *pr, struct symtab *search_symtab, |
1875 | struct partial_symtab *pst) | |
c906108c SS |
1876 | { |
1877 | struct symbol *s, *i; | |
1878 | struct block *b; | |
1879 | struct mips_extra_func_info *e; | |
1880 | char *sh_name; | |
1881 | ||
1882 | /* Simple rule to find files linked "-x" */ | |
1883 | if (cur_fdr->rss == -1) | |
1884 | { | |
1885 | if (pr->isym == -1) | |
1886 | { | |
1887 | /* Static procedure at address pr->adr. Sigh. */ | |
1888 | /* FIXME-32x64. assuming pr->adr fits in long. */ | |
1889 | complain (&pdr_static_symbol_complaint, (unsigned long) pr->adr); | |
1890 | return; | |
1891 | } | |
1892 | else | |
1893 | { | |
1894 | /* external */ | |
1895 | EXTR she; | |
c5aa993b | 1896 | |
c906108c SS |
1897 | (*debug_swap->swap_ext_in) (cur_bfd, |
1898 | ((char *) debug_info->external_ext | |
1899 | + (pr->isym | |
1900 | * debug_swap->external_ext_size)), | |
1901 | &she); | |
1902 | sh_name = debug_info->ssext + she.asym.iss; | |
1903 | } | |
1904 | } | |
1905 | else | |
1906 | { | |
1907 | /* Full symbols */ | |
1908 | SYMR sh; | |
1909 | ||
1910 | (*debug_swap->swap_sym_in) (cur_bfd, | |
1911 | ((char *) debug_info->external_sym | |
1912 | + ((cur_fdr->isymBase + pr->isym) | |
1913 | * debug_swap->external_sym_size)), | |
1914 | &sh); | |
1915 | sh_name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
1916 | } | |
1917 | ||
1918 | if (search_symtab != NULL) | |
1919 | { | |
1920 | #if 0 | |
1921 | /* This loses both in the case mentioned (want a static, find a global), | |
c5aa993b JM |
1922 | but also if we are looking up a non-mangled name which happens to |
1923 | match the name of a mangled function. */ | |
c906108c | 1924 | /* We have to save the cur_fdr across the call to lookup_symbol. |
c5aa993b JM |
1925 | If the pdr is for a static function and if a global function with |
1926 | the same name exists, lookup_symbol will eventually read in the symtab | |
1927 | for the global function and clobber cur_fdr. */ | |
c906108c SS |
1928 | FDR *save_cur_fdr = cur_fdr; |
1929 | s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL); | |
1930 | cur_fdr = save_cur_fdr; | |
1931 | #else | |
1932 | s = mylookup_symbol | |
1933 | (sh_name, | |
1934 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK), | |
1935 | VAR_NAMESPACE, | |
1936 | LOC_BLOCK); | |
1937 | #endif | |
1938 | } | |
1939 | else | |
1940 | s = mylookup_symbol (sh_name, top_stack->cur_block, | |
1941 | VAR_NAMESPACE, LOC_BLOCK); | |
1942 | ||
1943 | if (s != 0) | |
1944 | { | |
1945 | b = SYMBOL_BLOCK_VALUE (s); | |
1946 | } | |
1947 | else | |
1948 | { | |
1949 | complain (&pdr_for_nonsymbol_complaint, sh_name); | |
1950 | #if 1 | |
1951 | return; | |
1952 | #else | |
1953 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ | |
1954 | s = new_symbol (sh_name); | |
1955 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
1956 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
1957 | /* Donno its type, hope int is ok */ | |
1958 | SYMBOL_TYPE (s) = lookup_function_type (mdebug_type_int); | |
1959 | add_symbol (s, top_stack->cur_block); | |
1960 | /* Wont have symbols for this one */ | |
1961 | b = new_block (2); | |
1962 | SYMBOL_BLOCK_VALUE (s) = b; | |
1963 | BLOCK_FUNCTION (b) = s; | |
1964 | BLOCK_START (b) = pr->adr; | |
1965 | /* BOUND used to be the end of procedure's text, but the | |
c5aa993b | 1966 | argument is no longer passed in. */ |
c906108c SS |
1967 | BLOCK_END (b) = bound; |
1968 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1969 | add_block (b, top_stack->cur_st); | |
1970 | #endif | |
1971 | } | |
1972 | ||
1973 | i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST); | |
1974 | ||
1975 | if (i) | |
1976 | { | |
1977 | e = (struct mips_extra_func_info *) SYMBOL_VALUE (i); | |
1978 | e->pdr = *pr; | |
1979 | e->pdr.isym = (long) s; | |
1980 | ||
1981 | /* GDB expects the absolute function start address for the | |
c5aa993b JM |
1982 | procedure descriptor in e->pdr.adr. |
1983 | As the address in the procedure descriptor is usually relative, | |
1984 | we would have to relocate e->pdr.adr with cur_fdr->adr and | |
b8fbeb18 | 1985 | ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)). |
c5aa993b JM |
1986 | Unfortunately cur_fdr->adr and e->pdr.adr are both absolute |
1987 | in shared libraries on some systems, and on other systems | |
1988 | e->pdr.adr is sometimes offset by a bogus value. | |
1989 | To work around these problems, we replace e->pdr.adr with | |
1990 | the start address of the function. */ | |
c906108c SS |
1991 | e->pdr.adr = BLOCK_START (b); |
1992 | ||
1993 | /* Correct incorrect setjmp procedure descriptor from the library | |
c5aa993b | 1994 | to make backtrace through setjmp work. */ |
c906108c SS |
1995 | if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp")) |
1996 | { | |
1997 | complain (&bad_setjmp_pdr_complaint, 0); | |
1998 | e->pdr.pcreg = RA_REGNUM; | |
1999 | e->pdr.regmask = 0x80000000; | |
2000 | e->pdr.regoffset = -4; | |
2001 | } | |
2002 | } | |
2003 | ||
2004 | /* It would be reasonable that functions that have been compiled | |
2005 | without debugging info have a btNil type for their return value, | |
2006 | and functions that are void and are compiled with debugging info | |
2007 | have btVoid. | |
2008 | gcc and DEC f77 put out btNil types for both cases, so btNil is mapped | |
2009 | to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info' | |
2010 | case right. | |
2011 | The glevel field in cur_fdr could be used to determine the presence | |
2012 | of debugging info, but GCC doesn't always pass the -g switch settings | |
2013 | to the assembler and GAS doesn't set the glevel field from the -g switch | |
2014 | settings. | |
2015 | To work around these problems, the return value type of a TYPE_CODE_VOID | |
2016 | function is adjusted accordingly if no debugging info was found in the | |
2017 | compilation unit. */ | |
c5aa993b | 2018 | |
c906108c SS |
2019 | if (processing_gcc_compilation == 0 |
2020 | && found_ecoff_debugging_info == 0 | |
2021 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID) | |
2022 | SYMBOL_TYPE (s) = nodebug_func_symbol_type; | |
2023 | } | |
2024 | ||
2025 | /* Relocate the extra function info pointed to by the symbol table. */ | |
2026 | ||
2027 | void | |
fba45db2 | 2028 | ecoff_relocate_efi (struct symbol *sym, CORE_ADDR delta) |
c906108c SS |
2029 | { |
2030 | struct mips_extra_func_info *e; | |
2031 | ||
2032 | e = (struct mips_extra_func_info *) SYMBOL_VALUE (sym); | |
c5aa993b | 2033 | |
c906108c SS |
2034 | e->pdr.adr += delta; |
2035 | } | |
2036 | ||
2037 | /* Parse the external symbol ES. Just call parse_symbol() after | |
2038 | making sure we know where the aux are for it. | |
2039 | BIGEND says whether aux entries are big-endian or little-endian. | |
2040 | ||
2041 | This routine clobbers top_stack->cur_block and ->cur_st. */ | |
2042 | ||
a14ed312 KB |
2043 | static void parse_external (EXTR *, int, struct section_offsets *, |
2044 | struct objfile *); | |
c906108c SS |
2045 | |
2046 | static void | |
fba45db2 KB |
2047 | parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets, |
2048 | struct objfile *objfile) | |
c906108c SS |
2049 | { |
2050 | union aux_ext *ax; | |
2051 | ||
2052 | if (es->ifd != ifdNil) | |
2053 | { | |
2054 | cur_fd = es->ifd; | |
2055 | cur_fdr = debug_info->fdr + cur_fd; | |
2056 | ax = debug_info->external_aux + cur_fdr->iauxBase; | |
2057 | } | |
2058 | else | |
2059 | { | |
2060 | cur_fdr = debug_info->fdr; | |
2061 | ax = 0; | |
2062 | } | |
2063 | ||
2064 | /* Reading .o files */ | |
c5aa993b | 2065 | if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil) |
c906108c SS |
2066 | { |
2067 | char *what; | |
2068 | switch (es->asym.st) | |
2069 | { | |
2070 | case stNil: | |
2071 | /* These are generated for static symbols in .o files, | |
2072 | ignore them. */ | |
2073 | return; | |
2074 | case stStaticProc: | |
2075 | case stProc: | |
2076 | what = "procedure"; | |
2077 | n_undef_procs++; | |
2078 | break; | |
2079 | case stGlobal: | |
2080 | what = "variable"; | |
2081 | n_undef_vars++; | |
2082 | break; | |
2083 | case stLabel: | |
2084 | what = "label"; | |
2085 | n_undef_labels++; | |
2086 | break; | |
2087 | default: | |
2088 | what = "symbol"; | |
2089 | break; | |
2090 | } | |
2091 | n_undef_symbols++; | |
2092 | /* FIXME: Turn this into a complaint? */ | |
2093 | if (info_verbose) | |
2094 | printf_filtered ("Warning: %s `%s' is undefined (in %s)\n", | |
2095 | what, debug_info->ssext + es->asym.iss, | |
2096 | fdr_name (cur_fdr)); | |
2097 | return; | |
2098 | } | |
2099 | ||
2100 | switch (es->asym.st) | |
2101 | { | |
2102 | case stProc: | |
2103 | case stStaticProc: | |
2104 | /* There is no need to parse the external procedure symbols. | |
c5aa993b JM |
2105 | If they are from objects compiled without -g, their index will |
2106 | be indexNil, and the symbol definition from the minimal symbol | |
2107 | is preferrable (yielding a function returning int instead of int). | |
2108 | If the index points to a local procedure symbol, the local | |
2109 | symbol already provides the correct type. | |
2110 | Note that the index of the external procedure symbol points | |
2111 | to the local procedure symbol in the local symbol table, and | |
2112 | _not_ to the auxiliary symbol info. */ | |
c906108c SS |
2113 | break; |
2114 | case stGlobal: | |
2115 | case stLabel: | |
2116 | /* Global common symbols are resolved by the runtime loader, | |
c5aa993b JM |
2117 | ignore them. */ |
2118 | if (SC_IS_COMMON (es->asym.sc)) | |
c906108c SS |
2119 | break; |
2120 | ||
2121 | /* Note that the case of a symbol with indexNil must be handled | |
c5aa993b | 2122 | anyways by parse_symbol(). */ |
b8fbeb18 | 2123 | parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets, objfile); |
c906108c SS |
2124 | break; |
2125 | default: | |
2126 | break; | |
2127 | } | |
2128 | } | |
2129 | ||
2130 | /* Parse the line number info for file descriptor FH into | |
2131 | GDB's linetable LT. MIPS' encoding requires a little bit | |
2132 | of magic to get things out. Note also that MIPS' line | |
2133 | numbers can go back and forth, apparently we can live | |
2134 | with that and do not need to reorder our linetables */ | |
2135 | ||
a14ed312 KB |
2136 | static void parse_lines (FDR *, PDR *, struct linetable *, int, |
2137 | struct partial_symtab *, CORE_ADDR); | |
c906108c SS |
2138 | |
2139 | static void | |
fba45db2 KB |
2140 | parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines, |
2141 | struct partial_symtab *pst, CORE_ADDR lowest_pdr_addr) | |
c906108c SS |
2142 | { |
2143 | unsigned char *base; | |
2144 | int j, k; | |
2145 | int delta, count, lineno = 0; | |
2146 | ||
2147 | if (fh->cbLine == 0) | |
2148 | return; | |
2149 | ||
2150 | /* Scan by procedure descriptors */ | |
2151 | k = 0; | |
2152 | for (j = 0; j < fh->cpd; j++, pr++) | |
2153 | { | |
2154 | CORE_ADDR l; | |
2155 | CORE_ADDR adr; | |
2156 | unsigned char *halt; | |
2157 | ||
2158 | /* No code for this one */ | |
2159 | if (pr->iline == ilineNil || | |
2160 | pr->lnLow == -1 || pr->lnHigh == -1) | |
2161 | continue; | |
2162 | ||
2163 | /* Determine start and end address of compressed line bytes for | |
c5aa993b | 2164 | this procedure. */ |
c906108c SS |
2165 | base = debug_info->line + fh->cbLineOffset; |
2166 | if (j != (fh->cpd - 1)) | |
c5aa993b | 2167 | halt = base + pr[1].cbLineOffset; |
c906108c | 2168 | else |
c5aa993b | 2169 | halt = base + fh->cbLine; |
c906108c SS |
2170 | base += pr->cbLineOffset; |
2171 | ||
3973eadd | 2172 | adr = TEXTLOW (pst) + pr->adr - lowest_pdr_addr; |
c906108c SS |
2173 | |
2174 | l = adr >> 2; /* in words */ | |
c5aa993b | 2175 | for (lineno = pr->lnLow; base < halt;) |
c906108c SS |
2176 | { |
2177 | count = *base & 0x0f; | |
2178 | delta = *base++ >> 4; | |
2179 | if (delta >= 8) | |
2180 | delta -= 16; | |
2181 | if (delta == -8) | |
2182 | { | |
2183 | delta = (base[0] << 8) | base[1]; | |
2184 | if (delta >= 0x8000) | |
2185 | delta -= 0x10000; | |
2186 | base += 2; | |
2187 | } | |
2188 | lineno += delta; /* first delta is 0 */ | |
2189 | ||
2190 | /* Complain if the line table overflows. Could happen | |
2191 | with corrupt binaries. */ | |
2192 | if (lt->nitems >= maxlines) | |
2193 | { | |
2194 | complain (&bad_linetable_guess_complaint, fdr_name (fh)); | |
2195 | break; | |
2196 | } | |
2197 | k = add_line (lt, lineno, l, k); | |
2198 | l += count + 1; | |
2199 | } | |
2200 | } | |
2201 | } | |
2202 | \f | |
2203 | /* Master parsing procedure for first-pass reading of file symbols | |
2204 | into a partial_symtab. */ | |
2205 | ||
2206 | static void | |
fba45db2 | 2207 | parse_partial_symbols (struct objfile *objfile) |
c906108c SS |
2208 | { |
2209 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
2210 | const bfd_size_type external_rfd_size = debug_swap->external_rfd_size; | |
2211 | const bfd_size_type external_ext_size = debug_swap->external_ext_size; | |
12b9c64f AO |
2212 | void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in; |
2213 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; | |
2214 | void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in; | |
c906108c SS |
2215 | int f_idx, s_idx; |
2216 | HDRR *hdr = &debug_info->symbolic_header; | |
2217 | /* Running pointers */ | |
2218 | FDR *fh; | |
2219 | char *ext_out; | |
2220 | char *ext_out_end; | |
2221 | EXTR *ext_block; | |
2222 | register EXTR *ext_in; | |
2223 | EXTR *ext_in_end; | |
2224 | SYMR sh; | |
2225 | struct partial_symtab *pst; | |
2226 | int textlow_not_set = 1; | |
2227 | int past_first_source_file = 0; | |
2228 | ||
2229 | /* List of current psymtab's include files */ | |
2230 | char **psymtab_include_list; | |
2231 | int includes_allocated; | |
2232 | int includes_used; | |
2233 | EXTR *extern_tab; | |
2234 | struct pst_map *fdr_to_pst; | |
2235 | /* Index within current psymtab dependency list */ | |
2236 | struct partial_symtab **dependency_list; | |
2237 | int dependencies_used, dependencies_allocated; | |
2238 | struct cleanup *old_chain; | |
2239 | char *name; | |
2240 | enum language prev_language; | |
2241 | asection *text_sect; | |
2242 | int relocatable = 0; | |
2243 | ||
2244 | /* Irix 5.2 shared libraries have a fh->adr field of zero, but | |
2245 | the shared libraries are prelinked at a high memory address. | |
2246 | We have to adjust the start address of the object file for this case, | |
2247 | by setting it to the start address of the first procedure in the file. | |
2248 | But we should do no adjustments if we are debugging a .o file, where | |
2249 | the text section (and fh->adr) really starts at zero. */ | |
2250 | text_sect = bfd_get_section_by_name (cur_bfd, ".text"); | |
2251 | if (text_sect != NULL | |
2252 | && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC)) | |
2253 | relocatable = 1; | |
2254 | ||
2255 | extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack, | |
2256 | sizeof (EXTR) * hdr->iextMax); | |
2257 | ||
2258 | includes_allocated = 30; | |
2259 | includes_used = 0; | |
2260 | psymtab_include_list = (char **) alloca (includes_allocated * | |
2261 | sizeof (char *)); | |
2262 | next_symbol_text_func = mdebug_next_symbol_text; | |
2263 | ||
2264 | dependencies_allocated = 30; | |
2265 | dependencies_used = 0; | |
2266 | dependency_list = | |
2267 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2268 | sizeof (struct partial_symtab *)); | |
2269 | ||
2270 | last_source_file = NULL; | |
2271 | ||
2272 | /* | |
2273 | * Big plan: | |
2274 | * | |
2275 | * Only parse the Local and External symbols, and the Relative FDR. | |
2276 | * Fixup enough of the loader symtab to be able to use it. | |
2277 | * Allocate space only for the file's portions we need to | |
2278 | * look at. (XXX) | |
2279 | */ | |
2280 | ||
2281 | max_gdbinfo = 0; | |
2282 | max_glevel = MIN_GLEVEL; | |
2283 | ||
2284 | /* Allocate the map FDR -> PST. | |
2285 | Minor hack: -O3 images might claim some global data belongs | |
2286 | to FDR -1. We`ll go along with that */ | |
2287 | fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst); | |
b8c9b27d | 2288 | old_chain = make_cleanup (xfree, fdr_to_pst); |
c906108c SS |
2289 | fdr_to_pst++; |
2290 | { | |
d4f3574e | 2291 | struct partial_symtab *pst = new_psymtab ("", objfile); |
c906108c SS |
2292 | fdr_to_pst[-1].pst = pst; |
2293 | FDR_IDX (pst) = -1; | |
2294 | } | |
2295 | ||
2296 | /* Allocate the global pending list. */ | |
2297 | pending_list = | |
2298 | ((struct mdebug_pending **) | |
2299 | obstack_alloc (&objfile->psymbol_obstack, | |
2300 | hdr->ifdMax * sizeof (struct mdebug_pending *))); | |
12b9c64f | 2301 | memset (pending_list, 0, |
c906108c SS |
2302 | hdr->ifdMax * sizeof (struct mdebug_pending *)); |
2303 | ||
2304 | /* Pass 0 over external syms: swap them in. */ | |
2305 | ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR)); | |
b8c9b27d | 2306 | make_cleanup (xfree, ext_block); |
c906108c SS |
2307 | |
2308 | ext_out = (char *) debug_info->external_ext; | |
2309 | ext_out_end = ext_out + hdr->iextMax * external_ext_size; | |
2310 | ext_in = ext_block; | |
2311 | for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) | |
2312 | (*swap_ext_in) (cur_bfd, ext_out, ext_in); | |
2313 | ||
2314 | /* Pass 1 over external syms: Presize and partition the list */ | |
2315 | ext_in = ext_block; | |
2316 | ext_in_end = ext_in + hdr->iextMax; | |
2317 | for (; ext_in < ext_in_end; ext_in++) | |
2318 | { | |
2319 | /* See calls to complain below. */ | |
2320 | if (ext_in->ifd >= -1 | |
2321 | && ext_in->ifd < hdr->ifdMax | |
2322 | && ext_in->asym.iss >= 0 | |
2323 | && ext_in->asym.iss < hdr->issExtMax) | |
2324 | fdr_to_pst[ext_in->ifd].n_globals++; | |
2325 | } | |
2326 | ||
2327 | /* Pass 1.5 over files: partition out global symbol space */ | |
2328 | s_idx = 0; | |
2329 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) | |
2330 | { | |
2331 | fdr_to_pst[f_idx].globals_offset = s_idx; | |
2332 | s_idx += fdr_to_pst[f_idx].n_globals; | |
2333 | fdr_to_pst[f_idx].n_globals = 0; | |
2334 | } | |
2335 | ||
2336 | /* ECOFF in ELF: | |
2337 | ||
2338 | For ECOFF in ELF, we skip the creation of the minimal symbols. | |
2339 | The ECOFF symbols should be a subset of the Elf symbols, and the | |
2340 | section information of the elf symbols will be more accurate. | |
2341 | FIXME! What about Irix 5's native linker? | |
2342 | ||
2343 | By default, Elf sections which don't exist in ECOFF | |
2344 | get put in ECOFF's absolute section by the gnu linker. | |
2345 | Since absolute sections don't get relocated, we | |
2346 | end up calculating an address different from that of | |
2347 | the symbol's minimal symbol (created earlier from the | |
2348 | Elf symtab). | |
2349 | ||
2350 | To fix this, either : | |
2351 | 1) don't create the duplicate symbol | |
c5aa993b JM |
2352 | (assumes ECOFF symtab is a subset of the ELF symtab; |
2353 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2354 | 2) create it, only if lookup for existing symbol in ELF's minimal |
c5aa993b JM |
2355 | symbols fails |
2356 | (inefficient; | |
2357 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2358 | 3) create it, but lookup ELF's minimal symbol and use it's section |
c5aa993b JM |
2359 | during relocation, then modify "uniqify" phase to merge and |
2360 | eliminate the duplicate symbol | |
2361 | (highly inefficient) | |
c906108c SS |
2362 | |
2363 | I've implemented #1 here... | |
2364 | Skip the creation of the minimal symbols based on the ECOFF | |
2365 | symbol table. */ | |
2366 | ||
c5aa993b JM |
2367 | /* Pass 2 over external syms: fill in external symbols */ |
2368 | ext_in = ext_block; | |
2369 | ext_in_end = ext_in + hdr->iextMax; | |
2370 | for (; ext_in < ext_in_end; ext_in++) | |
2371 | { | |
2372 | enum minimal_symbol_type ms_type = mst_text; | |
2373 | CORE_ADDR svalue = ext_in->asym.value; | |
c906108c | 2374 | |
c5aa993b JM |
2375 | /* The Irix 5 native tools seem to sometimes generate bogus |
2376 | external symbols. */ | |
2377 | if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax) | |
2378 | { | |
2379 | complain (&bad_ext_ifd_complaint, ext_in->ifd, hdr->ifdMax); | |
2380 | continue; | |
2381 | } | |
2382 | if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax) | |
2383 | { | |
2384 | complain (&bad_ext_iss_complaint, ext_in->asym.iss, | |
2385 | hdr->issExtMax); | |
2386 | continue; | |
2387 | } | |
c906108c | 2388 | |
c5aa993b JM |
2389 | extern_tab[fdr_to_pst[ext_in->ifd].globals_offset |
2390 | + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; | |
c906108c SS |
2391 | |
2392 | ||
c5aa993b JM |
2393 | if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil) |
2394 | continue; | |
c906108c | 2395 | |
c906108c | 2396 | |
c5aa993b JM |
2397 | /* Pass 3 over files, over local syms: fill in static symbols */ |
2398 | name = debug_info->ssext + ext_in->asym.iss; | |
2399 | ||
2400 | /* Process ECOFF Symbol Types and Storage Classes */ | |
2401 | switch (ext_in->asym.st) | |
2402 | { | |
2403 | case stProc: | |
2404 | /* Beginnning of Procedure */ | |
b8fbeb18 | 2405 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2406 | break; |
2407 | case stStaticProc: | |
2408 | /* Load time only static procs */ | |
2409 | ms_type = mst_file_text; | |
b8fbeb18 | 2410 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2411 | break; |
2412 | case stGlobal: | |
2413 | /* External symbol */ | |
2414 | if (SC_IS_COMMON (ext_in->asym.sc)) | |
2415 | { | |
2416 | /* The value of a common symbol is its size, not its address. | |
2417 | Ignore it. */ | |
c906108c | 2418 | continue; |
c5aa993b JM |
2419 | } |
2420 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2421 | { | |
2422 | ms_type = mst_data; | |
b8fbeb18 | 2423 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c5aa993b JM |
2424 | } |
2425 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2426 | { | |
2427 | ms_type = mst_bss; | |
b8fbeb18 | 2428 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c5aa993b | 2429 | } |
0e931cf0 JB |
2430 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2431 | { | |
2432 | ms_type = mst_bss; | |
2433 | svalue += ANOFFSET (objfile->section_offsets, | |
2434 | get_section_index (objfile, ".sbss")); | |
2435 | } | |
c5aa993b JM |
2436 | else |
2437 | ms_type = mst_abs; | |
2438 | break; | |
2439 | case stLabel: | |
2440 | /* Label */ | |
0e931cf0 JB |
2441 | |
2442 | /* On certain platforms, some extra label symbols can be | |
2443 | generated by the linker. One possible usage for this kind | |
2444 | of symbols is to represent the address of the begining of a | |
2445 | given section. For instance, on Tru64 5.1, the address of | |
2446 | the _ftext label is the start address of the .text section. | |
2447 | ||
2448 | The storage class of these symbols is usually directly | |
2449 | related to the section to which the symbol refers. For | |
2450 | instance, on Tru64 5.1, the storage class for the _fdata | |
2451 | label is scData, refering to the .data section. | |
2452 | ||
2453 | It is actually possible that the section associated to the | |
2454 | storage class of the label does not exist. On True64 5.1 | |
2455 | for instance, the libm.so shared library does not contain | |
2456 | any .data section, although it contains a _fpdata label | |
2457 | which storage class is scData... Since these symbols are | |
2458 | usually useless for the debugger user anyway, we just | |
2459 | discard these symbols. | |
2460 | */ | |
2461 | ||
c5aa993b JM |
2462 | if (SC_IS_TEXT (ext_in->asym.sc)) |
2463 | { | |
0e931cf0 JB |
2464 | if (objfile->sect_index_text == -1) |
2465 | continue; | |
2466 | ||
c5aa993b | 2467 | ms_type = mst_file_text; |
b8fbeb18 | 2468 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2469 | } |
2470 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2471 | { | |
0e931cf0 JB |
2472 | if (objfile->sect_index_data == -1) |
2473 | continue; | |
2474 | ||
c5aa993b | 2475 | ms_type = mst_file_data; |
b8fbeb18 | 2476 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c5aa993b JM |
2477 | } |
2478 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2479 | { | |
0e931cf0 JB |
2480 | if (objfile->sect_index_bss == -1) |
2481 | continue; | |
2482 | ||
c5aa993b | 2483 | ms_type = mst_file_bss; |
b8fbeb18 | 2484 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c5aa993b | 2485 | } |
0e931cf0 JB |
2486 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2487 | { | |
2488 | const int sbss_sect_index = get_section_index (objfile, ".sbss"); | |
2489 | ||
2490 | if (sbss_sect_index == -1) | |
2491 | continue; | |
2492 | ||
2493 | ms_type = mst_file_bss; | |
2494 | svalue += ANOFFSET (objfile->section_offsets, sbss_sect_index); | |
2495 | } | |
c5aa993b JM |
2496 | else |
2497 | ms_type = mst_abs; | |
2498 | break; | |
2499 | case stLocal: | |
2500 | case stNil: | |
2501 | /* The alpha has the section start addresses in stLocal symbols | |
2502 | whose name starts with a `.'. Skip those but complain for all | |
2503 | other stLocal symbols. | |
2504 | Irix6 puts the section start addresses in stNil symbols, skip | |
2505 | those too. */ | |
2506 | if (name[0] == '.') | |
2507 | continue; | |
2508 | /* Fall through. */ | |
2509 | default: | |
2510 | ms_type = mst_unknown; | |
2511 | complain (&unknown_ext_complaint, name); | |
2512 | } | |
2513 | if (!ECOFF_IN_ELF (cur_bfd)) | |
2514 | prim_record_minimal_symbol (name, svalue, ms_type, objfile); | |
2515 | } | |
c906108c SS |
2516 | |
2517 | /* Pass 3 over files, over local syms: fill in static symbols */ | |
2518 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) | |
2519 | { | |
2520 | struct partial_symtab *save_pst; | |
2521 | EXTR *ext_ptr; | |
2522 | CORE_ADDR textlow; | |
2523 | ||
2524 | cur_fdr = fh = debug_info->fdr + f_idx; | |
2525 | ||
2526 | if (fh->csym == 0) | |
2527 | { | |
2528 | fdr_to_pst[f_idx].pst = NULL; | |
2529 | continue; | |
2530 | } | |
2531 | ||
2532 | /* Determine the start address for this object file from the | |
c5aa993b | 2533 | file header and relocate it, except for Irix 5.2 zero fh->adr. */ |
c906108c SS |
2534 | if (fh->cpd) |
2535 | { | |
2536 | textlow = fh->adr; | |
2537 | if (relocatable || textlow != 0) | |
b8fbeb18 | 2538 | textlow += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2539 | } |
2540 | else | |
2541 | textlow = 0; | |
d4f3574e | 2542 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
c906108c SS |
2543 | fdr_name (fh), |
2544 | textlow, | |
2545 | objfile->global_psymbols.next, | |
2546 | objfile->static_psymbols.next); | |
2547 | pst->read_symtab_private = ((char *) | |
2548 | obstack_alloc (&objfile->psymbol_obstack, | |
2549 | sizeof (struct symloc))); | |
12b9c64f | 2550 | memset (pst->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
2551 | |
2552 | save_pst = pst; | |
3973eadd JB |
2553 | TEXTLOW (pst) = pst->textlow; |
2554 | TEXTHIGH (pst) = pst->texthigh; | |
c906108c SS |
2555 | FDR_IDX (pst) = f_idx; |
2556 | CUR_BFD (pst) = cur_bfd; | |
2557 | DEBUG_SWAP (pst) = debug_swap; | |
2558 | DEBUG_INFO (pst) = debug_info; | |
2559 | PENDING_LIST (pst) = pending_list; | |
2560 | ||
2561 | /* The way to turn this into a symtab is to call... */ | |
2562 | pst->read_symtab = mdebug_psymtab_to_symtab; | |
2563 | ||
2564 | /* Set up language for the pst. | |
2565 | The language from the FDR is used if it is unambigious (e.g. cfront | |
c5aa993b JM |
2566 | with native cc and g++ will set the language to C). |
2567 | Otherwise we have to deduce the language from the filename. | |
2568 | Native ecoff has every header file in a separate FDR, so | |
2569 | deduce_language_from_filename will return language_unknown for | |
2570 | a header file, which is not what we want. | |
2571 | But the FDRs for the header files are after the FDR for the source | |
2572 | file, so we can assign the language of the source file to the | |
2573 | following header files. Then we save the language in the private | |
2574 | pst data so that we can reuse it when building symtabs. */ | |
c906108c SS |
2575 | prev_language = psymtab_language; |
2576 | ||
2577 | switch (fh->lang) | |
2578 | { | |
2579 | case langCplusplusV2: | |
2580 | psymtab_language = language_cplus; | |
2581 | break; | |
2582 | default: | |
2583 | psymtab_language = deduce_language_from_filename (fdr_name (fh)); | |
2584 | break; | |
2585 | } | |
2586 | if (psymtab_language == language_unknown) | |
2587 | psymtab_language = prev_language; | |
2588 | PST_PRIVATE (pst)->pst_language = psymtab_language; | |
2589 | ||
3973eadd | 2590 | TEXTHIGH (pst) = TEXTLOW (pst); |
c906108c SS |
2591 | |
2592 | /* For stabs-in-ecoff files, the second symbol must be @stab. | |
c5aa993b JM |
2593 | This symbol is emitted by mips-tfile to signal that the |
2594 | current object file uses encapsulated stabs instead of mips | |
2595 | ecoff for local symbols. (It is the second symbol because | |
2596 | the first symbol is the stFile used to signal the start of a | |
2597 | file). */ | |
c906108c SS |
2598 | processing_gcc_compilation = 0; |
2599 | if (fh->csym >= 2) | |
2600 | { | |
2601 | (*swap_sym_in) (cur_bfd, | |
2602 | ((char *) debug_info->external_sym | |
2603 | + (fh->isymBase + 1) * external_sym_size), | |
2604 | &sh); | |
2605 | if (STREQ (debug_info->ss + fh->issBase + sh.iss, stabs_symbol)) | |
2606 | processing_gcc_compilation = 2; | |
2607 | } | |
2608 | ||
2609 | if (processing_gcc_compilation != 0) | |
2610 | { | |
2611 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
2612 | { | |
2613 | int type_code; | |
2614 | char *namestring; | |
2615 | ||
2616 | (*swap_sym_in) (cur_bfd, | |
2617 | (((char *) debug_info->external_sym) | |
c5aa993b | 2618 | + (fh->isymBase + cur_sdx) * external_sym_size), |
c906108c SS |
2619 | &sh); |
2620 | type_code = ECOFF_UNMARK_STAB (sh.index); | |
2621 | if (!ECOFF_IS_STAB (&sh)) | |
2622 | { | |
2623 | if (sh.st == stProc || sh.st == stStaticProc) | |
2624 | { | |
2625 | CORE_ADDR procaddr; | |
2626 | long isym; | |
c5aa993b | 2627 | |
b8fbeb18 | 2628 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2629 | if (sh.st == stStaticProc) |
2630 | { | |
2631 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
2632 | prim_record_minimal_symbol_and_info (namestring, | |
2633 | sh.value, | |
2634 | mst_file_text, | |
2635 | NULL, | |
b8fbeb18 | 2636 | SECT_OFF_TEXT (objfile), |
c906108c SS |
2637 | NULL, |
2638 | objfile); | |
2639 | } | |
2640 | procaddr = sh.value; | |
2641 | ||
2642 | isym = AUX_GET_ISYM (fh->fBigendian, | |
2643 | (debug_info->external_aux | |
2644 | + fh->iauxBase | |
2645 | + sh.index)); | |
2646 | (*swap_sym_in) (cur_bfd, | |
2647 | ((char *) debug_info->external_sym | |
2648 | + ((fh->isymBase + isym - 1) | |
2649 | * external_sym_size)), | |
2650 | &sh); | |
2651 | if (sh.st == stEnd) | |
2652 | { | |
2653 | CORE_ADDR high = procaddr + sh.value; | |
2654 | ||
c5aa993b | 2655 | /* Kludge for Irix 5.2 zero fh->adr. */ |
c906108c | 2656 | if (!relocatable |
3973eadd JB |
2657 | && (TEXTLOW (pst) == 0 || procaddr < TEXTLOW (pst))) |
2658 | TEXTLOW (pst) = procaddr; | |
2659 | if (high > TEXTHIGH (pst)) | |
2660 | TEXTHIGH (pst) = high; | |
c906108c SS |
2661 | } |
2662 | } | |
2663 | else if (sh.st == stStatic) | |
2664 | { | |
2665 | switch (sh.sc) | |
2666 | { | |
2667 | case scUndefined: | |
2668 | case scSUndefined: | |
2669 | case scNil: | |
2670 | case scAbs: | |
2671 | break; | |
2672 | ||
2673 | case scData: | |
2674 | case scSData: | |
2675 | case scRData: | |
2676 | case scPData: | |
2677 | case scXData: | |
2678 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
b8fbeb18 | 2679 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
2680 | prim_record_minimal_symbol_and_info (namestring, |
2681 | sh.value, | |
2682 | mst_file_data, | |
2683 | NULL, | |
b8fbeb18 | 2684 | SECT_OFF_DATA (objfile), |
c906108c SS |
2685 | NULL, |
2686 | objfile); | |
2687 | break; | |
2688 | ||
2689 | default: | |
2690 | /* FIXME! Shouldn't this use cases for bss, | |
2691 | then have the default be abs? */ | |
2692 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
b8fbeb18 | 2693 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
2694 | prim_record_minimal_symbol_and_info (namestring, |
2695 | sh.value, | |
2696 | mst_file_bss, | |
2697 | NULL, | |
b8fbeb18 | 2698 | SECT_OFF_BSS (objfile), |
c906108c SS |
2699 | NULL, |
2700 | objfile); | |
2701 | break; | |
2702 | } | |
2703 | } | |
2704 | continue; | |
2705 | } | |
2706 | /* Handle stabs continuation */ | |
2707 | { | |
2708 | char *stabstring = debug_info->ss + fh->issBase + sh.iss; | |
2709 | int len = strlen (stabstring); | |
c5aa993b | 2710 | while (stabstring[len - 1] == '\\') |
c906108c SS |
2711 | { |
2712 | SYMR sh2; | |
2713 | char *stabstring1 = stabstring; | |
2714 | char *stabstring2; | |
2715 | int len2; | |
2716 | ||
2717 | /* Ignore continuation char from 1st string */ | |
2718 | len--; | |
2719 | ||
2720 | /* Read next stabstring */ | |
2721 | cur_sdx++; | |
2722 | (*swap_sym_in) (cur_bfd, | |
2723 | (((char *) debug_info->external_sym) | |
c5aa993b | 2724 | + (fh->isymBase + cur_sdx) |
c906108c SS |
2725 | * external_sym_size), |
2726 | &sh2); | |
2727 | stabstring2 = debug_info->ss + fh->issBase + sh2.iss; | |
2728 | len2 = strlen (stabstring2); | |
2729 | ||
2730 | /* Concatinate stabstring2 with stabstring1 */ | |
2731 | if (stabstring | |
c5aa993b | 2732 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
c906108c SS |
2733 | stabstring = xrealloc (stabstring, len + len2 + 1); |
2734 | else | |
86f902e0 FF |
2735 | { |
2736 | stabstring = xmalloc (len + len2 + 1); | |
2737 | strcpy (stabstring, stabstring1); | |
2738 | } | |
c906108c SS |
2739 | strcpy (stabstring + len, stabstring2); |
2740 | len += len2; | |
2741 | } | |
2742 | ||
d3119d1e EZ |
2743 | switch (type_code) |
2744 | { | |
2745 | static struct complaint function_outside_compilation_unit = { | |
2746 | "function `%s' appears to be defined outside of all compilation units", 0, 0 | |
2747 | }; | |
2748 | char *p; | |
2749 | /* | |
2750 | * Standard, external, non-debugger, symbols | |
2751 | */ | |
2752 | ||
2753 | case N_TEXT | N_EXT: | |
2754 | case N_NBTEXT | N_EXT: | |
2755 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2756 | goto record_it; | |
2757 | ||
2758 | case N_DATA | N_EXT: | |
2759 | case N_NBDATA | N_EXT: | |
2760 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2761 | goto record_it; | |
2762 | ||
2763 | case N_BSS: | |
2764 | case N_BSS | N_EXT: | |
2765 | case N_NBBSS | N_EXT: | |
2766 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
2767 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); | |
2768 | goto record_it; | |
2769 | ||
2770 | case N_ABS | N_EXT: | |
2771 | record_it: | |
2772 | continue; | |
2773 | ||
2774 | /* Standard, local, non-debugger, symbols */ | |
2775 | ||
2776 | case N_NBTEXT: | |
2777 | ||
2778 | /* We need to be able to deal with both N_FN or N_TEXT, | |
2779 | because we have no way of knowing whether the sys-supplied ld | |
2780 | or GNU ld was used to make the executable. Sequents throw | |
2781 | in another wrinkle -- they renumbered N_FN. */ | |
2782 | ||
2783 | case N_FN: | |
2784 | case N_FN_SEQ: | |
2785 | case N_TEXT: | |
2786 | continue; | |
2787 | ||
2788 | case N_DATA: | |
2789 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2790 | goto record_it; | |
2791 | ||
2792 | case N_UNDF | N_EXT: | |
2793 | continue; /* Just undefined, not COMMON */ | |
2794 | ||
2795 | case N_UNDF: | |
2796 | continue; | |
2797 | ||
2798 | /* Lots of symbol types we can just ignore. */ | |
2799 | ||
2800 | case N_ABS: | |
2801 | case N_NBDATA: | |
2802 | case N_NBBSS: | |
2803 | continue; | |
2804 | ||
2805 | /* Keep going . . . */ | |
2806 | ||
2807 | /* | |
2808 | * Special symbol types for GNU | |
2809 | */ | |
2810 | case N_INDR: | |
2811 | case N_INDR | N_EXT: | |
2812 | case N_SETA: | |
2813 | case N_SETA | N_EXT: | |
2814 | case N_SETT: | |
2815 | case N_SETT | N_EXT: | |
2816 | case N_SETD: | |
2817 | case N_SETD | N_EXT: | |
2818 | case N_SETB: | |
2819 | case N_SETB | N_EXT: | |
2820 | case N_SETV: | |
2821 | continue; | |
2822 | ||
2823 | /* | |
2824 | * Debugger symbols | |
2825 | */ | |
2826 | ||
2827 | case N_SO: | |
2828 | { | |
2829 | CORE_ADDR valu; | |
2830 | static int prev_so_symnum = -10; | |
2831 | static int first_so_symnum; | |
2832 | char *p; | |
2833 | int prev_textlow_not_set; | |
2834 | ||
2835 | valu = sh.value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2836 | ||
2837 | prev_textlow_not_set = textlow_not_set; | |
2838 | ||
2839 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
2840 | /* A zero value is probably an indication for the SunPRO 3.0 | |
2841 | compiler. end_psymtab explicitly tests for zero, so | |
2842 | don't relocate it. */ | |
2843 | ||
2844 | if (sh.value == 0) | |
2845 | { | |
2846 | textlow_not_set = 1; | |
2847 | valu = 0; | |
2848 | } | |
2849 | else | |
2850 | textlow_not_set = 0; | |
2851 | #else | |
2852 | textlow_not_set = 0; | |
2853 | #endif | |
2854 | past_first_source_file = 1; | |
2855 | ||
2856 | if (prev_so_symnum != symnum - 1) | |
2857 | { /* Here if prev stab wasn't N_SO */ | |
2858 | first_so_symnum = symnum; | |
2859 | ||
2860 | if (pst) | |
2861 | { | |
2862 | pst = (struct partial_symtab *) 0; | |
2863 | includes_used = 0; | |
2864 | dependencies_used = 0; | |
2865 | } | |
2866 | } | |
2867 | ||
2868 | prev_so_symnum = symnum; | |
c906108c | 2869 | |
d3119d1e EZ |
2870 | /* End the current partial symtab and start a new one */ |
2871 | ||
2872 | /* SET_NAMESTRING ();*/ | |
2873 | namestring = stabstring; | |
2874 | ||
2875 | /* Null name means end of .o file. Don't start a new one. */ | |
2876 | if (*namestring == '\000') | |
2877 | continue; | |
2878 | ||
2879 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
2880 | The first one is a directory name; the second the file name. | |
2881 | If pst exists, is empty, and has a filename ending in '/', | |
2882 | we assume the previous N_SO was a directory name. */ | |
2883 | ||
2884 | p = strrchr (namestring, '/'); | |
2885 | if (p && *(p + 1) == '\000') | |
2886 | continue; /* Simply ignore directory name SOs */ | |
2887 | ||
2888 | /* Some other compilers (C++ ones in particular) emit useless | |
2889 | SOs for non-existant .c files. We ignore all subsequent SOs that | |
2890 | immediately follow the first. */ | |
2891 | ||
2892 | if (!pst) | |
2893 | pst = save_pst; | |
2894 | continue; | |
2895 | } | |
2896 | ||
2897 | case N_BINCL: | |
2898 | continue; | |
2899 | ||
2900 | case N_SOL: | |
2901 | { | |
2902 | enum language tmp_language; | |
2903 | /* Mark down an include file in the current psymtab */ | |
2904 | ||
2905 | /* SET_NAMESTRING ();*/ | |
2906 | namestring = stabstring; | |
2907 | ||
2908 | tmp_language = deduce_language_from_filename (namestring); | |
2909 | ||
2910 | /* Only change the psymtab's language if we've learned | |
2911 | something useful (eg. tmp_language is not language_unknown). | |
2912 | In addition, to match what start_subfile does, never change | |
2913 | from C++ to C. */ | |
2914 | if (tmp_language != language_unknown | |
2915 | && (tmp_language != language_c | |
2916 | || psymtab_language != language_cplus)) | |
2917 | psymtab_language = tmp_language; | |
2918 | ||
2919 | /* In C++, one may expect the same filename to come round many | |
2920 | times, when code is coming alternately from the main file | |
2921 | and from inline functions in other files. So I check to see | |
2922 | if this is a file we've seen before -- either the main | |
2923 | source file, or a previously included file. | |
2924 | ||
2925 | This seems to be a lot of time to be spending on N_SOL, but | |
2926 | things like "break c-exp.y:435" need to work (I | |
2927 | suppose the psymtab_include_list could be hashed or put | |
2928 | in a binary tree, if profiling shows this is a major hog). */ | |
2929 | if (pst && STREQ (namestring, pst->filename)) | |
2930 | continue; | |
2931 | { | |
2932 | register int i; | |
2933 | for (i = 0; i < includes_used; i++) | |
2934 | if (STREQ (namestring, psymtab_include_list[i])) | |
2935 | { | |
2936 | i = -1; | |
2937 | break; | |
2938 | } | |
2939 | if (i == -1) | |
2940 | continue; | |
2941 | } | |
2942 | ||
2943 | psymtab_include_list[includes_used++] = namestring; | |
2944 | if (includes_used >= includes_allocated) | |
2945 | { | |
2946 | char **orig = psymtab_include_list; | |
2947 | ||
2948 | psymtab_include_list = (char **) | |
2949 | alloca ((includes_allocated *= 2) * | |
2950 | sizeof (char *)); | |
2951 | memcpy ((PTR) psymtab_include_list, (PTR) orig, | |
2952 | includes_used * sizeof (char *)); | |
2953 | } | |
2954 | continue; | |
2955 | } | |
2956 | case N_LSYM: /* Typedef or automatic variable. */ | |
2957 | case N_STSYM: /* Data seg var -- static */ | |
2958 | case N_LCSYM: /* BSS " */ | |
2959 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
2960 | case N_NBSTS: /* Gould nobase. */ | |
2961 | case N_NBLCS: /* symbols. */ | |
2962 | case N_FUN: | |
2963 | case N_GSYM: /* Global (extern) variable; can be | |
2964 | data or bss (sigh FIXME). */ | |
2965 | ||
2966 | /* Following may probably be ignored; I'll leave them here | |
2967 | for now (until I do Pascal and Modula 2 extensions). */ | |
2968 | ||
2969 | case N_PC: /* I may or may not need this; I | |
2970 | suspect not. */ | |
2971 | case N_M2C: /* I suspect that I can ignore this here. */ | |
2972 | case N_SCOPE: /* Same. */ | |
2973 | ||
2974 | /* SET_NAMESTRING ();*/ | |
2975 | namestring = stabstring; | |
2976 | p = (char *) strchr (namestring, ':'); | |
2977 | if (!p) | |
2978 | continue; /* Not a debugging symbol. */ | |
2979 | ||
2980 | ||
2981 | ||
2982 | /* Main processing section for debugging symbols which | |
2983 | the initial read through the symbol tables needs to worry | |
2984 | about. If we reach this point, the symbol which we are | |
2985 | considering is definitely one we are interested in. | |
2986 | p must also contain the (valid) index into the namestring | |
2987 | which indicates the debugging type symbol. */ | |
2988 | ||
2989 | switch (p[1]) | |
2990 | { | |
2991 | case 'S': | |
2992 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2993 | #ifdef STATIC_TRANSFORM_NAME | |
2994 | namestring = STATIC_TRANSFORM_NAME (namestring); | |
2995 | #endif | |
2996 | add_psymbol_to_list (namestring, p - namestring, | |
2997 | VAR_NAMESPACE, LOC_STATIC, | |
2998 | &objfile->static_psymbols, | |
2999 | 0, sh.value, | |
3000 | psymtab_language, objfile); | |
3001 | continue; | |
3002 | case 'G': | |
3003 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
3004 | /* The addresses in these entries are reported to be | |
3005 | wrong. See the code that reads 'G's for symtabs. */ | |
3006 | add_psymbol_to_list (namestring, p - namestring, | |
3007 | VAR_NAMESPACE, LOC_STATIC, | |
3008 | &objfile->global_psymbols, | |
3009 | 0, sh.value, | |
3010 | psymtab_language, objfile); | |
3011 | continue; | |
3012 | ||
3013 | case 'T': | |
3014 | /* When a 'T' entry is defining an anonymous enum, it | |
3015 | may have a name which is the empty string, or a | |
3016 | single space. Since they're not really defining a | |
3017 | symbol, those shouldn't go in the partial symbol | |
3018 | table. We do pick up the elements of such enums at | |
3019 | 'check_enum:', below. */ | |
3020 | if (p >= namestring + 2 | |
3021 | || (p == namestring + 1 | |
3022 | && namestring[0] != ' ')) | |
3023 | { | |
3024 | add_psymbol_to_list (namestring, p - namestring, | |
3025 | STRUCT_NAMESPACE, LOC_TYPEDEF, | |
3026 | &objfile->static_psymbols, | |
3027 | sh.value, 0, | |
3028 | psymtab_language, objfile); | |
3029 | if (p[2] == 't') | |
3030 | { | |
3031 | /* Also a typedef with the same name. */ | |
3032 | add_psymbol_to_list (namestring, p - namestring, | |
3033 | VAR_NAMESPACE, LOC_TYPEDEF, | |
3034 | &objfile->static_psymbols, | |
3035 | sh.value, 0, | |
3036 | psymtab_language, objfile); | |
3037 | p += 1; | |
3038 | } | |
3039 | /* The semantics of C++ state that "struct foo { ... }" | |
3040 | also defines a typedef for "foo". Unfortuantely, cfront | |
3041 | never makes the typedef when translating from C++ to C. | |
3042 | We make the typedef here so that "ptype foo" works as | |
3043 | expected for cfront translated code. */ | |
3044 | else if (psymtab_language == language_cplus) | |
3045 | { | |
3046 | /* Also a typedef with the same name. */ | |
3047 | add_psymbol_to_list (namestring, p - namestring, | |
3048 | VAR_NAMESPACE, LOC_TYPEDEF, | |
3049 | &objfile->static_psymbols, | |
3050 | sh.value, 0, | |
3051 | psymtab_language, objfile); | |
3052 | } | |
3053 | } | |
3054 | goto check_enum; | |
3055 | case 't': | |
3056 | if (p != namestring) /* a name is there, not just :T... */ | |
3057 | { | |
3058 | add_psymbol_to_list (namestring, p - namestring, | |
3059 | VAR_NAMESPACE, LOC_TYPEDEF, | |
3060 | &objfile->static_psymbols, | |
3061 | sh.value, 0, | |
3062 | psymtab_language, objfile); | |
3063 | } | |
3064 | check_enum: | |
3065 | /* If this is an enumerated type, we need to | |
3066 | add all the enum constants to the partial symbol | |
3067 | table. This does not cover enums without names, e.g. | |
3068 | "enum {a, b} c;" in C, but fortunately those are | |
3069 | rare. There is no way for GDB to find those from the | |
3070 | enum type without spending too much time on it. Thus | |
3071 | to solve this problem, the compiler needs to put out the | |
3072 | enum in a nameless type. GCC2 does this. */ | |
3073 | ||
3074 | /* We are looking for something of the form | |
3075 | <name> ":" ("t" | "T") [<number> "="] "e" | |
3076 | {<constant> ":" <value> ","} ";". */ | |
3077 | ||
3078 | /* Skip over the colon and the 't' or 'T'. */ | |
3079 | p += 2; | |
3080 | /* This type may be given a number. Also, numbers can come | |
3081 | in pairs like (0,26). Skip over it. */ | |
3082 | while ((*p >= '0' && *p <= '9') | |
3083 | || *p == '(' || *p == ',' || *p == ')' | |
3084 | || *p == '=') | |
3085 | p++; | |
3086 | ||
3087 | if (*p++ == 'e') | |
3088 | { | |
3089 | /* The aix4 compiler emits extra crud before the members. */ | |
3090 | if (*p == '-') | |
3091 | { | |
3092 | /* Skip over the type (?). */ | |
3093 | while (*p != ':') | |
3094 | p++; | |
3095 | ||
3096 | /* Skip over the colon. */ | |
3097 | p++; | |
3098 | } | |
3099 | ||
3100 | /* We have found an enumerated type. */ | |
3101 | /* According to comments in read_enum_type | |
3102 | a comma could end it instead of a semicolon. | |
3103 | I don't know where that happens. | |
3104 | Accept either. */ | |
3105 | while (*p && *p != ';' && *p != ',') | |
3106 | { | |
3107 | char *q; | |
3108 | ||
3109 | /* Check for and handle cretinous dbx symbol name | |
3110 | continuation! */ | |
3111 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
3112 | p = next_symbol_text (objfile); | |
3113 | ||
3114 | /* Point to the character after the name | |
3115 | of the enum constant. */ | |
3116 | for (q = p; *q && *q != ':'; q++) | |
3117 | ; | |
3118 | /* Note that the value doesn't matter for | |
3119 | enum constants in psymtabs, just in symtabs. */ | |
3120 | add_psymbol_to_list (p, q - p, | |
3121 | VAR_NAMESPACE, LOC_CONST, | |
3122 | &objfile->static_psymbols, 0, | |
3123 | 0, psymtab_language, objfile); | |
3124 | /* Point past the name. */ | |
3125 | p = q; | |
3126 | /* Skip over the value. */ | |
3127 | while (*p && *p != ',') | |
3128 | p++; | |
3129 | /* Advance past the comma. */ | |
3130 | if (*p) | |
3131 | p++; | |
3132 | } | |
3133 | } | |
3134 | continue; | |
3135 | case 'c': | |
3136 | /* Constant, e.g. from "const" in Pascal. */ | |
3137 | add_psymbol_to_list (namestring, p - namestring, | |
3138 | VAR_NAMESPACE, LOC_CONST, | |
3139 | &objfile->static_psymbols, sh.value, | |
3140 | 0, psymtab_language, objfile); | |
3141 | continue; | |
3142 | ||
3143 | case 'f': | |
3144 | if (! pst) | |
3145 | { | |
3146 | int name_len = p - namestring; | |
3147 | char *name = xmalloc (name_len + 1); | |
3148 | memcpy (name, namestring, name_len); | |
3149 | name[name_len] = '\0'; | |
3150 | complain (&function_outside_compilation_unit, name); | |
3151 | xfree (name); | |
3152 | } | |
3153 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3154 | add_psymbol_to_list (namestring, p - namestring, | |
3155 | VAR_NAMESPACE, LOC_BLOCK, | |
3156 | &objfile->static_psymbols, | |
3157 | 0, sh.value, | |
3158 | psymtab_language, objfile); | |
3159 | continue; | |
3160 | ||
3161 | /* Global functions were ignored here, but now they | |
3162 | are put into the global psymtab like one would expect. | |
3163 | They're also in the minimal symbol table. */ | |
3164 | case 'F': | |
3165 | if (! pst) | |
3166 | { | |
3167 | int name_len = p - namestring; | |
3168 | char *name = xmalloc (name_len + 1); | |
3169 | memcpy (name, namestring, name_len); | |
3170 | name[name_len] = '\0'; | |
3171 | complain (&function_outside_compilation_unit, name); | |
3172 | xfree (name); | |
3173 | } | |
3174 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3175 | add_psymbol_to_list (namestring, p - namestring, | |
3176 | VAR_NAMESPACE, LOC_BLOCK, | |
3177 | &objfile->global_psymbols, | |
3178 | 0, sh.value, | |
3179 | psymtab_language, objfile); | |
3180 | continue; | |
3181 | ||
3182 | /* Two things show up here (hopefully); static symbols of | |
3183 | local scope (static used inside braces) or extensions | |
3184 | of structure symbols. We can ignore both. */ | |
3185 | case 'V': | |
3186 | case '(': | |
3187 | case '0': | |
3188 | case '1': | |
3189 | case '2': | |
3190 | case '3': | |
3191 | case '4': | |
3192 | case '5': | |
3193 | case '6': | |
3194 | case '7': | |
3195 | case '8': | |
3196 | case '9': | |
3197 | case '-': | |
3198 | case '#': /* for symbol identification (used in live ranges) */ | |
3199 | /* added to support cfront stabs strings */ | |
3200 | case 'Z': /* for definition continuations */ | |
3201 | case 'P': /* for prototypes */ | |
3202 | continue; | |
3203 | ||
3204 | case ':': | |
3205 | /* It is a C++ nested symbol. We don't need to record it | |
3206 | (I don't think); if we try to look up foo::bar::baz, | |
3207 | then symbols for the symtab containing foo should get | |
3208 | read in, I think. */ | |
3209 | /* Someone says sun cc puts out symbols like | |
3210 | /foo/baz/maclib::/usr/local/bin/maclib, | |
3211 | which would get here with a symbol type of ':'. */ | |
3212 | continue; | |
3213 | ||
3214 | default: | |
3215 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
3216 | of a continued stab can show up here. The question is | |
3217 | whether they ever can mimic a normal stab--it would be | |
3218 | nice if not, since we certainly don't want to spend the | |
3219 | time searching to the end of every string looking for | |
3220 | a backslash. */ | |
3221 | ||
3222 | complain (&unknown_symchar_complaint, p[1]); | |
3223 | ||
3224 | /* Ignore it; perhaps it is an extension that we don't | |
3225 | know about. */ | |
3226 | continue; | |
3227 | } | |
3228 | ||
3229 | case N_EXCL: | |
3230 | continue; | |
3231 | ||
3232 | case N_ENDM: | |
3233 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
3234 | /* Solaris 2 end of module, finish current partial symbol table. | |
3235 | END_PSYMTAB will set TEXTHIGH (pst) to the proper value, which | |
3236 | is necessary if a module compiled without debugging info | |
3237 | follows this module. */ | |
3238 | if (pst) | |
3239 | { | |
3240 | pst = (struct partial_symtab *) 0; | |
3241 | includes_used = 0; | |
3242 | dependencies_used = 0; | |
3243 | } | |
3244 | #endif | |
3245 | continue; | |
3246 | ||
3247 | case N_RBRAC: | |
3248 | if (sh.value > TEXTHIGH (save_pst)) | |
3249 | TEXTHIGH (save_pst) = sh.value; | |
3250 | continue; | |
3251 | case N_EINCL: | |
3252 | case N_DSLINE: | |
3253 | case N_BSLINE: | |
3254 | case N_SSYM: /* Claim: Structure or union element. | |
3255 | Hopefully, I can ignore this. */ | |
3256 | case N_ENTRY: /* Alternate entry point; can ignore. */ | |
3257 | case N_MAIN: /* Can definitely ignore this. */ | |
3258 | case N_CATCH: /* These are GNU C++ extensions */ | |
3259 | case N_EHDECL: /* that can safely be ignored here. */ | |
3260 | case N_LENG: | |
3261 | case N_BCOMM: | |
3262 | case N_ECOMM: | |
3263 | case N_ECOML: | |
3264 | case N_FNAME: | |
3265 | case N_SLINE: | |
3266 | case N_RSYM: | |
3267 | case N_PSYM: | |
3268 | case N_LBRAC: | |
3269 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
3270 | case N_DEFD: /* GNU Modula-2 */ | |
3271 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
3272 | ||
3273 | case N_OBJ: /* useless types from Solaris */ | |
3274 | case N_OPT: | |
3275 | /* These symbols aren't interesting; don't worry about them */ | |
3276 | ||
3277 | continue; | |
3278 | ||
3279 | default: | |
3280 | /* If we haven't found it yet, ignore it. It's probably some | |
3281 | new type we don't know about yet. */ | |
3282 | complain (&unknown_symtype_complaint, | |
3283 | local_hex_string (type_code)); /*CUR_SYMBOL_TYPE*/ | |
3284 | continue; | |
3285 | } | |
c5aa993b | 3286 | if (stabstring |
c906108c | 3287 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
b8c9b27d | 3288 | xfree (stabstring); |
c906108c | 3289 | } |
c5aa993b | 3290 | /* end - Handle continuation */ |
c906108c SS |
3291 | } |
3292 | } | |
3293 | else | |
3294 | { | |
3295 | for (cur_sdx = 0; cur_sdx < fh->csym;) | |
3296 | { | |
3297 | char *name; | |
3298 | enum address_class class; | |
3299 | ||
3300 | (*swap_sym_in) (cur_bfd, | |
3301 | ((char *) debug_info->external_sym | |
3302 | + ((fh->isymBase + cur_sdx) | |
3303 | * external_sym_size)), | |
3304 | &sh); | |
3305 | ||
3306 | if (ECOFF_IS_STAB (&sh)) | |
3307 | { | |
3308 | cur_sdx++; | |
3309 | continue; | |
3310 | } | |
3311 | ||
3312 | /* Non absolute static symbols go into the minimal table. */ | |
c5aa993b | 3313 | if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil |
c906108c SS |
3314 | || (sh.index == indexNil |
3315 | && (sh.st != stStatic || sh.sc == scAbs))) | |
3316 | { | |
3317 | /* FIXME, premature? */ | |
3318 | cur_sdx++; | |
3319 | continue; | |
3320 | } | |
3321 | ||
3322 | name = debug_info->ss + fh->issBase + sh.iss; | |
3323 | ||
3324 | switch (sh.sc) | |
3325 | { | |
3326 | case scText: | |
3327 | case scRConst: | |
3328 | /* The value of a stEnd symbol is the displacement from the | |
3329 | corresponding start symbol value, do not relocate it. */ | |
3330 | if (sh.st != stEnd) | |
b8fbeb18 | 3331 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3332 | break; |
3333 | case scData: | |
3334 | case scSData: | |
3335 | case scRData: | |
3336 | case scPData: | |
3337 | case scXData: | |
b8fbeb18 | 3338 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3339 | break; |
3340 | case scBss: | |
3341 | case scSBss: | |
b8fbeb18 | 3342 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3343 | break; |
3344 | } | |
3345 | ||
3346 | switch (sh.st) | |
3347 | { | |
3348 | CORE_ADDR high; | |
3349 | CORE_ADDR procaddr; | |
3350 | int new_sdx; | |
3351 | ||
3352 | case stStaticProc: | |
3353 | prim_record_minimal_symbol_and_info (name, sh.value, | |
3354 | mst_file_text, NULL, | |
b8fbeb18 | 3355 | SECT_OFF_TEXT (objfile), NULL, |
c906108c SS |
3356 | objfile); |
3357 | ||
3358 | /* FALLTHROUGH */ | |
3359 | ||
3360 | case stProc: | |
3361 | /* Usually there is a local and a global stProc symbol | |
3362 | for a function. This means that the function name | |
3363 | has already been entered into the mimimal symbol table | |
3364 | while processing the global symbols in pass 2 above. | |
3365 | One notable exception is the PROGRAM name from | |
3366 | f77 compiled executables, it is only put out as | |
3367 | local stProc symbol, and a global MAIN__ stProc symbol | |
3368 | points to it. It doesn't matter though, as gdb is | |
3369 | still able to find the PROGRAM name via the partial | |
3370 | symbol table, and the MAIN__ symbol via the minimal | |
3371 | symbol table. */ | |
3372 | if (sh.st == stProc) | |
3373 | add_psymbol_to_list (name, strlen (name), | |
3374 | VAR_NAMESPACE, LOC_BLOCK, | |
3375 | &objfile->global_psymbols, | |
c5aa993b | 3376 | 0, sh.value, psymtab_language, objfile); |
c906108c SS |
3377 | else |
3378 | add_psymbol_to_list (name, strlen (name), | |
3379 | VAR_NAMESPACE, LOC_BLOCK, | |
3380 | &objfile->static_psymbols, | |
c5aa993b | 3381 | 0, sh.value, psymtab_language, objfile); |
c906108c SS |
3382 | |
3383 | /* Skip over procedure to next one. */ | |
3384 | if (sh.index >= hdr->iauxMax) | |
3385 | { | |
3386 | /* Should not happen, but does when cross-compiling | |
c5aa993b | 3387 | with the MIPS compiler. FIXME -- pull later. */ |
c906108c SS |
3388 | complain (&index_complaint, name); |
3389 | new_sdx = cur_sdx + 1; /* Don't skip at all */ | |
3390 | } | |
3391 | else | |
3392 | new_sdx = AUX_GET_ISYM (fh->fBigendian, | |
3393 | (debug_info->external_aux | |
3394 | + fh->iauxBase | |
3395 | + sh.index)); | |
3396 | procaddr = sh.value; | |
3397 | ||
3398 | if (new_sdx <= cur_sdx) | |
3399 | { | |
3400 | /* This should not happen either... FIXME. */ | |
3401 | complain (&aux_index_complaint, name); | |
3402 | new_sdx = cur_sdx + 1; /* Don't skip backward */ | |
3403 | } | |
3404 | ||
3405 | cur_sdx = new_sdx; | |
3406 | (*swap_sym_in) (cur_bfd, | |
3407 | ((char *) debug_info->external_sym | |
3408 | + ((fh->isymBase + cur_sdx - 1) | |
3409 | * external_sym_size)), | |
3410 | &sh); | |
3411 | if (sh.st != stEnd) | |
3412 | continue; | |
3413 | ||
3414 | /* Kludge for Irix 5.2 zero fh->adr. */ | |
3415 | if (!relocatable | |
3973eadd JB |
3416 | && (TEXTLOW (pst) == 0 || procaddr < TEXTLOW (pst))) |
3417 | TEXTLOW (pst) = procaddr; | |
c906108c SS |
3418 | |
3419 | high = procaddr + sh.value; | |
3973eadd JB |
3420 | if (high > TEXTHIGH (pst)) |
3421 | TEXTHIGH (pst) = high; | |
c906108c SS |
3422 | continue; |
3423 | ||
3424 | case stStatic: /* Variable */ | |
c5aa993b | 3425 | if (SC_IS_DATA (sh.sc)) |
c906108c SS |
3426 | prim_record_minimal_symbol_and_info (name, sh.value, |
3427 | mst_file_data, NULL, | |
b8fbeb18 | 3428 | SECT_OFF_DATA (objfile), |
c906108c SS |
3429 | NULL, |
3430 | objfile); | |
3431 | else | |
3432 | prim_record_minimal_symbol_and_info (name, sh.value, | |
3433 | mst_file_bss, NULL, | |
b8fbeb18 | 3434 | SECT_OFF_BSS (objfile), |
c906108c SS |
3435 | NULL, |
3436 | objfile); | |
3437 | class = LOC_STATIC; | |
3438 | break; | |
3439 | ||
c5aa993b | 3440 | case stIndirect: /* Irix5 forward declaration */ |
c906108c SS |
3441 | /* Skip forward declarations from Irix5 cc */ |
3442 | goto skip; | |
3443 | ||
c5aa993b | 3444 | case stTypedef: /* Typedef */ |
c906108c SS |
3445 | /* Skip typedefs for forward declarations and opaque |
3446 | structs from alpha and mips cc. */ | |
3447 | if (sh.iss == 0 || has_opaque_xref (fh, &sh)) | |
3448 | goto skip; | |
3449 | class = LOC_TYPEDEF; | |
3450 | break; | |
3451 | ||
3452 | case stConstant: /* Constant decl */ | |
3453 | class = LOC_CONST; | |
3454 | break; | |
3455 | ||
3456 | case stUnion: | |
3457 | case stStruct: | |
3458 | case stEnum: | |
c5aa993b | 3459 | case stBlock: /* { }, str, un, enum */ |
c906108c SS |
3460 | /* Do not create a partial symbol for cc unnamed aggregates |
3461 | and gcc empty aggregates. */ | |
3462 | if ((sh.sc == scInfo | |
c5aa993b | 3463 | || SC_IS_COMMON (sh.sc)) |
c906108c SS |
3464 | && sh.iss != 0 |
3465 | && sh.index != cur_sdx + 2) | |
3466 | { | |
3467 | add_psymbol_to_list (name, strlen (name), | |
3468 | STRUCT_NAMESPACE, LOC_TYPEDEF, | |
3469 | &objfile->static_psymbols, | |
3470 | 0, (CORE_ADDR) 0, | |
3471 | psymtab_language, objfile); | |
3472 | } | |
3473 | handle_psymbol_enumerators (objfile, fh, sh.st, sh.value); | |
3474 | ||
3475 | /* Skip over the block */ | |
3476 | new_sdx = sh.index; | |
3477 | if (new_sdx <= cur_sdx) | |
3478 | { | |
3479 | /* This happens with the Ultrix kernel. */ | |
3480 | complain (&block_index_complaint, name); | |
3481 | new_sdx = cur_sdx + 1; /* Don't skip backward */ | |
3482 | } | |
3483 | cur_sdx = new_sdx; | |
3484 | continue; | |
3485 | ||
3486 | case stFile: /* File headers */ | |
3487 | case stLabel: /* Labels */ | |
3488 | case stEnd: /* Ends of files */ | |
3489 | goto skip; | |
3490 | ||
3491 | case stLocal: /* Local variables */ | |
3492 | /* Normally these are skipped because we skip over | |
3493 | all blocks we see. However, these can occur | |
3494 | as visible symbols in a .h file that contains code. */ | |
3495 | goto skip; | |
3496 | ||
3497 | default: | |
3498 | /* Both complaints are valid: one gives symbol name, | |
3499 | the other the offending symbol type. */ | |
3500 | complain (&unknown_sym_complaint, name); | |
3501 | complain (&unknown_st_complaint, sh.st); | |
3502 | cur_sdx++; | |
3503 | continue; | |
3504 | } | |
3505 | /* Use this gdb symbol */ | |
3506 | add_psymbol_to_list (name, strlen (name), | |
3507 | VAR_NAMESPACE, class, | |
3508 | &objfile->static_psymbols, | |
3509 | 0, sh.value, psymtab_language, objfile); | |
3510 | skip: | |
3511 | cur_sdx++; /* Go to next file symbol */ | |
3512 | } | |
3513 | ||
3514 | /* Now do enter the external symbols. */ | |
3515 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; | |
3516 | cur_sdx = fdr_to_pst[f_idx].n_globals; | |
3517 | PST_PRIVATE (save_pst)->extern_count = cur_sdx; | |
3518 | PST_PRIVATE (save_pst)->extern_tab = ext_ptr; | |
3519 | for (; --cur_sdx >= 0; ext_ptr++) | |
3520 | { | |
3521 | enum address_class class; | |
3522 | SYMR *psh; | |
3523 | char *name; | |
3524 | CORE_ADDR svalue; | |
3525 | ||
3526 | if (ext_ptr->ifd != f_idx) | |
e1e9e218 | 3527 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
3528 | psh = &ext_ptr->asym; |
3529 | ||
3530 | /* Do not add undefined symbols to the partial symbol table. */ | |
c5aa993b | 3531 | if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil) |
c906108c SS |
3532 | continue; |
3533 | ||
3534 | svalue = psh->value; | |
3535 | switch (psh->sc) | |
3536 | { | |
3537 | case scText: | |
3538 | case scRConst: | |
b8fbeb18 | 3539 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3540 | break; |
3541 | case scData: | |
3542 | case scSData: | |
3543 | case scRData: | |
3544 | case scPData: | |
3545 | case scXData: | |
b8fbeb18 | 3546 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3547 | break; |
3548 | case scBss: | |
3549 | case scSBss: | |
b8fbeb18 | 3550 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3551 | break; |
3552 | } | |
3553 | ||
3554 | switch (psh->st) | |
3555 | { | |
3556 | case stNil: | |
3557 | /* These are generated for static symbols in .o files, | |
3558 | ignore them. */ | |
3559 | continue; | |
3560 | case stProc: | |
3561 | case stStaticProc: | |
3562 | /* External procedure symbols have been entered | |
3563 | into the minimal symbol table in pass 2 above. | |
3564 | Ignore them, as parse_external will ignore them too. */ | |
3565 | continue; | |
3566 | case stLabel: | |
3567 | class = LOC_LABEL; | |
3568 | break; | |
3569 | default: | |
3570 | complain (&unknown_ext_complaint, | |
3571 | debug_info->ssext + psh->iss); | |
3572 | /* Fall through, pretend it's global. */ | |
3573 | case stGlobal: | |
3574 | /* Global common symbols are resolved by the runtime loader, | |
3575 | ignore them. */ | |
c5aa993b | 3576 | if (SC_IS_COMMON (psh->sc)) |
c906108c SS |
3577 | continue; |
3578 | ||
3579 | class = LOC_STATIC; | |
3580 | break; | |
3581 | } | |
3582 | name = debug_info->ssext + psh->iss; | |
3583 | add_psymbol_to_list (name, strlen (name), | |
3584 | VAR_NAMESPACE, class, | |
3585 | &objfile->global_psymbols, | |
3586 | 0, svalue, | |
3587 | psymtab_language, objfile); | |
3588 | } | |
3589 | } | |
3590 | ||
3591 | /* Link pst to FDR. end_psymtab returns NULL if the psymtab was | |
c5aa993b | 3592 | empty and put on the free list. */ |
c906108c | 3593 | fdr_to_pst[f_idx].pst = end_psymtab (save_pst, |
c5aa993b | 3594 | psymtab_include_list, includes_used, |
3973eadd | 3595 | -1, TEXTHIGH (save_pst), |
c5aa993b | 3596 | dependency_list, dependencies_used, textlow_not_set); |
c906108c SS |
3597 | includes_used = 0; |
3598 | dependencies_used = 0; | |
3599 | ||
3973eadd JB |
3600 | if (objfile->ei.entry_point >= TEXTLOW (save_pst) && |
3601 | objfile->ei.entry_point < TEXTHIGH (save_pst)) | |
c906108c | 3602 | { |
3973eadd JB |
3603 | objfile->ei.entry_file_lowpc = TEXTLOW (save_pst); |
3604 | objfile->ei.entry_file_highpc = TEXTHIGH (save_pst); | |
c906108c SS |
3605 | } |
3606 | ||
3607 | /* The objfile has its functions reordered if this partial symbol | |
c5aa993b JM |
3608 | table overlaps any other partial symbol table. |
3609 | We cannot assume a reordered objfile if a partial symbol table | |
3610 | is contained within another partial symbol table, as partial symbol | |
3611 | tables for include files with executable code are contained | |
3612 | within the partial symbol table for the including source file, | |
3613 | and we do not want to flag the objfile reordered for these cases. | |
3614 | ||
3615 | This strategy works well for Irix-5.2 shared libraries, but we | |
3616 | might have to use a more elaborate (and slower) algorithm for | |
3617 | other cases. */ | |
c906108c SS |
3618 | save_pst = fdr_to_pst[f_idx].pst; |
3619 | if (save_pst != NULL | |
3973eadd | 3620 | && TEXTLOW (save_pst) != 0 |
c906108c SS |
3621 | && !(objfile->flags & OBJF_REORDERED)) |
3622 | { | |
3623 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
c5aa993b JM |
3624 | { |
3625 | if (save_pst != pst | |
3973eadd JB |
3626 | && TEXTLOW (save_pst) >= TEXTLOW (pst) |
3627 | && TEXTLOW (save_pst) < TEXTHIGH (pst) | |
3628 | && TEXTHIGH (save_pst) > TEXTHIGH (pst)) | |
c5aa993b JM |
3629 | { |
3630 | objfile->flags |= OBJF_REORDERED; | |
3631 | break; | |
3632 | } | |
3633 | } | |
c906108c SS |
3634 | } |
3635 | } | |
3636 | ||
3637 | /* Now scan the FDRs for dependencies */ | |
3638 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) | |
3639 | { | |
3640 | fh = f_idx + debug_info->fdr; | |
3641 | pst = fdr_to_pst[f_idx].pst; | |
3642 | ||
c5aa993b | 3643 | if (pst == (struct partial_symtab *) NULL) |
c906108c SS |
3644 | continue; |
3645 | ||
3646 | /* This should catch stabs-in-ecoff. */ | |
3647 | if (fh->crfd <= 1) | |
3648 | continue; | |
3649 | ||
3650 | /* Skip the first file indirect entry as it is a self dependency | |
c5aa993b | 3651 | for source files or a reverse .h -> .c dependency for header files. */ |
c906108c SS |
3652 | pst->number_of_dependencies = 0; |
3653 | pst->dependencies = | |
3654 | ((struct partial_symtab **) | |
3655 | obstack_alloc (&objfile->psymbol_obstack, | |
3656 | ((fh->crfd - 1) | |
3657 | * sizeof (struct partial_symtab *)))); | |
3658 | for (s_idx = 1; s_idx < fh->crfd; s_idx++) | |
3659 | { | |
3660 | RFDT rh; | |
3661 | ||
3662 | (*swap_rfd_in) (cur_bfd, | |
3663 | ((char *) debug_info->external_rfd | |
3664 | + (fh->rfdBase + s_idx) * external_rfd_size), | |
3665 | &rh); | |
3666 | if (rh < 0 || rh >= hdr->ifdMax) | |
3667 | { | |
3668 | complain (&bad_file_number_complaint, rh); | |
3669 | continue; | |
3670 | } | |
3671 | ||
3672 | /* Skip self dependencies of header files. */ | |
3673 | if (rh == f_idx) | |
3674 | continue; | |
3675 | ||
3676 | /* Do not add to dependeny list if psymtab was empty. */ | |
c5aa993b | 3677 | if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL) |
c906108c SS |
3678 | continue; |
3679 | pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst; | |
3680 | } | |
3681 | } | |
3682 | ||
3683 | /* Remove the dummy psymtab created for -O3 images above, if it is | |
3684 | still empty, to enable the detection of stripped executables. */ | |
3685 | if (objfile->psymtabs->next == NULL | |
3686 | && objfile->psymtabs->number_of_dependencies == 0 | |
3687 | && objfile->psymtabs->n_global_syms == 0 | |
3688 | && objfile->psymtabs->n_static_syms == 0) | |
3689 | objfile->psymtabs = NULL; | |
3690 | do_cleanups (old_chain); | |
3691 | } | |
3692 | ||
3693 | /* If the current psymbol has an enumerated type, we need to add | |
3694 | all the the enum constants to the partial symbol table. */ | |
3695 | ||
3696 | static void | |
fba45db2 KB |
3697 | handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype, |
3698 | CORE_ADDR svalue) | |
c906108c SS |
3699 | { |
3700 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
12b9c64f | 3701 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c | 3702 | char *ext_sym = ((char *) debug_info->external_sym |
c5aa993b | 3703 | + ((fh->isymBase + cur_sdx + 1) * external_sym_size)); |
c906108c SS |
3704 | SYMR sh; |
3705 | TIR tir; | |
3706 | ||
3707 | switch (stype) | |
3708 | { | |
3709 | case stEnum: | |
3710 | break; | |
3711 | ||
3712 | case stBlock: | |
3713 | /* It is an enumerated type if the next symbol entry is a stMember | |
c5aa993b JM |
3714 | and its auxiliary index is indexNil or its auxiliary entry |
3715 | is a plain btNil or btVoid. | |
3716 | Alpha cc -migrate enums are recognized by a zero index and | |
3717 | a zero symbol value. | |
3718 | DU 4.0 cc enums are recognized by a member type of btEnum without | |
3719 | qualifiers and a zero symbol value. */ | |
c906108c SS |
3720 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); |
3721 | if (sh.st != stMember) | |
3722 | return; | |
3723 | ||
3724 | if (sh.index == indexNil | |
3725 | || (sh.index == 0 && svalue == 0)) | |
3726 | break; | |
3727 | (*debug_swap->swap_tir_in) (fh->fBigendian, | |
3728 | &(debug_info->external_aux | |
3729 | + fh->iauxBase + sh.index)->a_ti, | |
3730 | &tir); | |
3731 | if ((tir.bt != btNil | |
3732 | && tir.bt != btVoid | |
3733 | && (tir.bt != btEnum || svalue != 0)) | |
3734 | || tir.tq0 != tqNil) | |
3735 | return; | |
3736 | break; | |
3737 | ||
3738 | default: | |
3739 | return; | |
3740 | } | |
3741 | ||
3742 | for (;;) | |
3743 | { | |
3744 | char *name; | |
3745 | ||
3746 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); | |
3747 | if (sh.st != stMember) | |
3748 | break; | |
3749 | name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
3750 | ||
3751 | /* Note that the value doesn't matter for enum constants | |
c5aa993b | 3752 | in psymtabs, just in symtabs. */ |
c906108c SS |
3753 | add_psymbol_to_list (name, strlen (name), |
3754 | VAR_NAMESPACE, LOC_CONST, | |
3755 | &objfile->static_psymbols, 0, | |
3756 | (CORE_ADDR) 0, psymtab_language, objfile); | |
3757 | ext_sym += external_sym_size; | |
3758 | } | |
3759 | } | |
3760 | ||
0e7e8d51 KB |
3761 | /* Get the next symbol. OBJFILE is unused. */ |
3762 | ||
c906108c | 3763 | static char * |
0e7e8d51 | 3764 | mdebug_next_symbol_text (struct objfile *objfile) |
c906108c SS |
3765 | { |
3766 | SYMR sh; | |
3767 | ||
3768 | cur_sdx++; | |
3769 | (*debug_swap->swap_sym_in) (cur_bfd, | |
3770 | ((char *) debug_info->external_sym | |
3771 | + ((cur_fdr->isymBase + cur_sdx) | |
3772 | * debug_swap->external_sym_size)), | |
3773 | &sh); | |
3774 | return debug_info->ss + cur_fdr->issBase + sh.iss; | |
3775 | } | |
3776 | ||
3777 | /* Ancillary function to psymtab_to_symtab(). Does all the work | |
3778 | for turning the partial symtab PST into a symtab, recurring | |
3779 | first on all dependent psymtabs. The argument FILENAME is | |
3780 | only passed so we can see in debug stack traces what file | |
3781 | is being read. | |
3782 | ||
3783 | This function has a split personality, based on whether the | |
3784 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. | |
3785 | The flow of control and even the memory allocation differs. FIXME. */ | |
3786 | ||
3787 | static void | |
fba45db2 | 3788 | psymtab_to_symtab_1 (struct partial_symtab *pst, char *filename) |
c906108c SS |
3789 | { |
3790 | bfd_size_type external_sym_size; | |
3791 | bfd_size_type external_pdr_size; | |
12b9c64f AO |
3792 | void (*swap_sym_in) (bfd *, void *, SYMR *); |
3793 | void (*swap_pdr_in) (bfd *, void *, PDR *); | |
c906108c | 3794 | int i; |
16db6055 | 3795 | struct symtab *st = NULL; |
c906108c SS |
3796 | FDR *fh; |
3797 | struct linetable *lines; | |
3798 | CORE_ADDR lowest_pdr_addr = 0; | |
16db6055 | 3799 | int last_symtab_ended = 0; |
c906108c SS |
3800 | |
3801 | if (pst->readin) | |
3802 | return; | |
3803 | pst->readin = 1; | |
3804 | ||
3805 | /* Read in all partial symbtabs on which this one is dependent. | |
3806 | NOTE that we do have circular dependencies, sigh. We solved | |
3807 | that by setting pst->readin before this point. */ | |
3808 | ||
3809 | for (i = 0; i < pst->number_of_dependencies; i++) | |
3810 | if (!pst->dependencies[i]->readin) | |
3811 | { | |
3812 | /* Inform about additional files to be read in. */ | |
3813 | if (info_verbose) | |
3814 | { | |
3815 | fputs_filtered (" ", gdb_stdout); | |
3816 | wrap_here (""); | |
3817 | fputs_filtered ("and ", gdb_stdout); | |
3818 | wrap_here (""); | |
3819 | printf_filtered ("%s...", | |
3820 | pst->dependencies[i]->filename); | |
3821 | wrap_here (""); /* Flush output */ | |
3822 | gdb_flush (gdb_stdout); | |
3823 | } | |
3824 | /* We only pass the filename for debug purposes */ | |
3825 | psymtab_to_symtab_1 (pst->dependencies[i], | |
3826 | pst->dependencies[i]->filename); | |
3827 | } | |
3828 | ||
3829 | /* Do nothing if this is a dummy psymtab. */ | |
3830 | ||
3831 | if (pst->n_global_syms == 0 && pst->n_static_syms == 0 | |
3973eadd | 3832 | && TEXTLOW (pst) == 0 && TEXTHIGH (pst) == 0) |
c906108c SS |
3833 | return; |
3834 | ||
3835 | /* Now read the symbols for this symtab */ | |
3836 | ||
3837 | cur_bfd = CUR_BFD (pst); | |
3838 | debug_swap = DEBUG_SWAP (pst); | |
3839 | debug_info = DEBUG_INFO (pst); | |
3840 | pending_list = PENDING_LIST (pst); | |
3841 | external_sym_size = debug_swap->external_sym_size; | |
3842 | external_pdr_size = debug_swap->external_pdr_size; | |
3843 | swap_sym_in = debug_swap->swap_sym_in; | |
3844 | swap_pdr_in = debug_swap->swap_pdr_in; | |
3845 | current_objfile = pst->objfile; | |
3846 | cur_fd = FDR_IDX (pst); | |
3847 | fh = ((cur_fd == -1) | |
3848 | ? (FDR *) NULL | |
3849 | : debug_info->fdr + cur_fd); | |
3850 | cur_fdr = fh; | |
3851 | ||
3852 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ | |
3853 | processing_gcc_compilation = 0; | |
3854 | if (fh != (FDR *) NULL && fh->csym >= 2) | |
3855 | { | |
3856 | SYMR sh; | |
3857 | ||
3858 | (*swap_sym_in) (cur_bfd, | |
3859 | ((char *) debug_info->external_sym | |
3860 | + (fh->isymBase + 1) * external_sym_size), | |
3861 | &sh); | |
3862 | if (STREQ (debug_info->ss + fh->issBase + sh.iss, | |
3863 | stabs_symbol)) | |
3864 | { | |
3865 | /* We indicate that this is a GCC compilation so that certain | |
3866 | features will be enabled in stabsread/dbxread. */ | |
3867 | processing_gcc_compilation = 2; | |
3868 | } | |
3869 | } | |
3870 | ||
3871 | if (processing_gcc_compilation != 0) | |
3872 | { | |
3873 | ||
3874 | /* This symbol table contains stabs-in-ecoff entries. */ | |
3875 | ||
3876 | /* Parse local symbols first */ | |
3877 | ||
3878 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */ | |
3879 | { | |
3880 | current_objfile = NULL; | |
3881 | return; | |
3882 | } | |
3883 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
3884 | { | |
3885 | SYMR sh; | |
3886 | char *name; | |
3887 | CORE_ADDR valu; | |
3888 | ||
3889 | (*swap_sym_in) (cur_bfd, | |
3890 | (((char *) debug_info->external_sym) | |
3891 | + (fh->isymBase + cur_sdx) * external_sym_size), | |
3892 | &sh); | |
3893 | name = debug_info->ss + fh->issBase + sh.iss; | |
3894 | valu = sh.value; | |
3895 | /* XXX This is a hack. It will go away! */ | |
3896 | if (ECOFF_IS_STAB (&sh) || (name[0] == '#')) | |
3897 | { | |
3898 | int type_code = ECOFF_UNMARK_STAB (sh.index); | |
3899 | ||
3900 | /* We should never get non N_STAB symbols here, but they | |
c5aa993b JM |
3901 | should be harmless, so keep process_one_symbol from |
3902 | complaining about them. */ | |
c906108c SS |
3903 | if (type_code & N_STAB) |
3904 | { | |
16db6055 EZ |
3905 | /* If we found a trailing N_SO with no name, process |
3906 | it here instead of in process_one_symbol, so we | |
3907 | can keep a handle to its symtab. The symtab | |
3908 | would otherwise be ended twice, once in | |
3909 | process_one_symbol, and once after this loop. */ | |
3910 | if (type_code == N_SO | |
3911 | && last_source_file | |
3912 | && previous_stab_code != (unsigned char) N_SO | |
3913 | && *name == '\000') | |
3914 | { | |
3915 | valu += ANOFFSET (pst->section_offsets, | |
3916 | SECT_OFF_TEXT (pst->objfile)); | |
3917 | previous_stab_code = N_SO; | |
3918 | st = end_symtab (valu, pst->objfile, | |
3919 | SECT_OFF_TEXT (pst->objfile)); | |
3920 | end_stabs (); | |
3921 | last_symtab_ended = 1; | |
3922 | } | |
3923 | else | |
3924 | { | |
3925 | last_symtab_ended = 0; | |
3926 | process_one_symbol (type_code, 0, valu, name, | |
3927 | pst->section_offsets, pst->objfile); | |
3928 | } | |
c906108c SS |
3929 | } |
3930 | /* Similarly a hack. */ | |
3931 | else if (name[0] == '#') | |
3932 | { | |
3933 | process_one_symbol (N_SLINE, 0, valu, name, | |
3934 | pst->section_offsets, pst->objfile); | |
3935 | } | |
3936 | if (type_code == N_FUN) | |
3937 | { | |
3938 | /* Make up special symbol to contain | |
3939 | procedure specific info */ | |
3940 | struct mips_extra_func_info *e = | |
c5aa993b JM |
3941 | ((struct mips_extra_func_info *) |
3942 | obstack_alloc (¤t_objfile->symbol_obstack, | |
3943 | sizeof (struct mips_extra_func_info))); | |
c906108c SS |
3944 | struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME); |
3945 | ||
12b9c64f | 3946 | memset (e, 0, sizeof (struct mips_extra_func_info)); |
c906108c SS |
3947 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; |
3948 | SYMBOL_CLASS (s) = LOC_CONST; | |
3949 | SYMBOL_TYPE (s) = mdebug_type_void; | |
3950 | SYMBOL_VALUE (s) = (long) e; | |
3951 | e->pdr.framereg = -1; | |
3952 | add_symbol_to_list (s, &local_symbols); | |
3953 | } | |
3954 | } | |
3955 | else if (sh.st == stLabel) | |
3956 | { | |
3957 | if (sh.index == indexNil) | |
3958 | { | |
3959 | /* This is what the gcc2_compiled and __gnu_compiled_* | |
3960 | show up as. So don't complain. */ | |
3961 | ; | |
3962 | } | |
3963 | else | |
3964 | { | |
3965 | /* Handle encoded stab line number. */ | |
b8fbeb18 | 3966 | valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)); |
c906108c SS |
3967 | record_line (current_subfile, sh.index, valu); |
3968 | } | |
3969 | } | |
3970 | else if (sh.st == stProc || sh.st == stStaticProc | |
3971 | || sh.st == stStatic || sh.st == stEnd) | |
3972 | /* These are generated by gcc-2.x, do not complain */ | |
3973 | ; | |
3974 | else | |
3975 | complain (&stab_unknown_complaint, name); | |
3976 | } | |
16db6055 EZ |
3977 | |
3978 | if (! last_symtab_ended) | |
3979 | { | |
3973eadd | 3980 | st = end_symtab (TEXTHIGH (pst), pst->objfile, SECT_OFF_TEXT (pst->objfile)); |
16db6055 EZ |
3981 | end_stabs (); |
3982 | } | |
c906108c SS |
3983 | |
3984 | /* Sort the symbol table now, we are done adding symbols to it. | |
c5aa993b | 3985 | We must do this before parse_procedure calls lookup_symbol. */ |
c906108c SS |
3986 | sort_symtab_syms (st); |
3987 | ||
3988 | /* There used to be a call to sort_blocks here, but this should not | |
c5aa993b JM |
3989 | be necessary for stabs symtabs. And as sort_blocks modifies the |
3990 | start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK, | |
3991 | it did the wrong thing if the first procedure in a file was | |
3992 | generated via asm statements. */ | |
c906108c SS |
3993 | |
3994 | /* Fill in procedure info next. */ | |
3995 | if (fh->cpd > 0) | |
3996 | { | |
3997 | PDR *pr_block; | |
3998 | struct cleanup *old_chain; | |
3999 | char *pdr_ptr; | |
4000 | char *pdr_end; | |
4001 | PDR *pdr_in; | |
4002 | PDR *pdr_in_end; | |
4003 | ||
4004 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
b8c9b27d | 4005 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4006 | |
4007 | pdr_ptr = ((char *) debug_info->external_pdr | |
4008 | + fh->ipdFirst * external_pdr_size); | |
4009 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4010 | pdr_in = pr_block; | |
4011 | for (; | |
4012 | pdr_ptr < pdr_end; | |
4013 | pdr_ptr += external_pdr_size, pdr_in++) | |
4014 | { | |
4015 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4016 | ||
4017 | /* Determine lowest PDR address, the PDRs are not always | |
c5aa993b | 4018 | sorted. */ |
c906108c SS |
4019 | if (pdr_in == pr_block) |
4020 | lowest_pdr_addr = pdr_in->adr; | |
4021 | else if (pdr_in->adr < lowest_pdr_addr) | |
4022 | lowest_pdr_addr = pdr_in->adr; | |
4023 | } | |
4024 | ||
4025 | pdr_in = pr_block; | |
4026 | pdr_in_end = pdr_in + fh->cpd; | |
4027 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4028 | parse_procedure (pdr_in, st, pst); | |
4029 | ||
4030 | do_cleanups (old_chain); | |
4031 | } | |
4032 | } | |
4033 | else | |
4034 | { | |
4035 | /* This symbol table contains ordinary ecoff entries. */ | |
4036 | ||
4037 | int f_max; | |
4038 | int maxlines; | |
4039 | EXTR *ext_ptr; | |
4040 | ||
4041 | /* How many symbols will we need */ | |
4042 | /* FIXME, this does not count enum values. */ | |
4043 | f_max = pst->n_global_syms + pst->n_static_syms; | |
4044 | if (fh == 0) | |
4045 | { | |
4046 | maxlines = 0; | |
4047 | st = new_symtab ("unknown", f_max, 0, pst->objfile); | |
4048 | } | |
4049 | else | |
4050 | { | |
4051 | f_max += fh->csym + fh->cpd; | |
4052 | maxlines = 2 * fh->cline; | |
4053 | st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile); | |
4054 | ||
4055 | /* The proper language was already determined when building | |
4056 | the psymtab, use it. */ | |
4057 | st->language = PST_PRIVATE (pst)->pst_language; | |
4058 | } | |
4059 | ||
4060 | psymtab_language = st->language; | |
4061 | ||
4062 | lines = LINETABLE (st); | |
4063 | ||
4064 | /* Get a new lexical context */ | |
4065 | ||
4066 | push_parse_stack (); | |
4067 | top_stack->cur_st = st; | |
4068 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st), | |
4069 | STATIC_BLOCK); | |
3973eadd | 4070 | BLOCK_START (top_stack->cur_block) = TEXTLOW (pst); |
c906108c SS |
4071 | BLOCK_END (top_stack->cur_block) = 0; |
4072 | top_stack->blocktype = stFile; | |
4073 | top_stack->maxsyms = 2 * f_max; | |
4074 | top_stack->cur_type = 0; | |
4075 | top_stack->procadr = 0; | |
4076 | top_stack->numargs = 0; | |
4077 | found_ecoff_debugging_info = 0; | |
4078 | ||
4079 | if (fh) | |
4080 | { | |
4081 | char *sym_ptr; | |
4082 | char *sym_end; | |
4083 | ||
4084 | /* Parse local symbols first */ | |
4085 | sym_ptr = ((char *) debug_info->external_sym | |
4086 | + fh->isymBase * external_sym_size); | |
4087 | sym_end = sym_ptr + fh->csym * external_sym_size; | |
4088 | while (sym_ptr < sym_end) | |
4089 | { | |
4090 | SYMR sh; | |
4091 | int c; | |
4092 | ||
4093 | (*swap_sym_in) (cur_bfd, sym_ptr, &sh); | |
4094 | c = parse_symbol (&sh, | |
4095 | debug_info->external_aux + fh->iauxBase, | |
b8fbeb18 | 4096 | sym_ptr, fh->fBigendian, pst->section_offsets, pst->objfile); |
c906108c SS |
4097 | sym_ptr += c * external_sym_size; |
4098 | } | |
4099 | ||
4100 | /* Linenumbers. At the end, check if we can save memory. | |
4101 | parse_lines has to look ahead an arbitrary number of PDR | |
4102 | structures, so we swap them all first. */ | |
4103 | if (fh->cpd > 0) | |
4104 | { | |
4105 | PDR *pr_block; | |
4106 | struct cleanup *old_chain; | |
4107 | char *pdr_ptr; | |
4108 | char *pdr_end; | |
4109 | PDR *pdr_in; | |
4110 | PDR *pdr_in_end; | |
4111 | ||
4112 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
4113 | ||
b8c9b27d | 4114 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4115 | |
4116 | pdr_ptr = ((char *) debug_info->external_pdr | |
4117 | + fh->ipdFirst * external_pdr_size); | |
4118 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4119 | pdr_in = pr_block; | |
4120 | for (; | |
4121 | pdr_ptr < pdr_end; | |
4122 | pdr_ptr += external_pdr_size, pdr_in++) | |
4123 | { | |
4124 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4125 | ||
4126 | /* Determine lowest PDR address, the PDRs are not always | |
4127 | sorted. */ | |
4128 | if (pdr_in == pr_block) | |
4129 | lowest_pdr_addr = pdr_in->adr; | |
4130 | else if (pdr_in->adr < lowest_pdr_addr) | |
4131 | lowest_pdr_addr = pdr_in->adr; | |
4132 | } | |
4133 | ||
4134 | parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr); | |
4135 | if (lines->nitems < fh->cline) | |
4136 | lines = shrink_linetable (lines); | |
4137 | ||
4138 | /* Fill in procedure info next. */ | |
4139 | pdr_in = pr_block; | |
4140 | pdr_in_end = pdr_in + fh->cpd; | |
4141 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4142 | parse_procedure (pdr_in, 0, pst); | |
4143 | ||
4144 | do_cleanups (old_chain); | |
4145 | } | |
4146 | } | |
4147 | ||
4148 | LINETABLE (st) = lines; | |
4149 | ||
4150 | /* .. and our share of externals. | |
c5aa993b JM |
4151 | XXX use the global list to speed up things here. how? |
4152 | FIXME, Maybe quit once we have found the right number of ext's? */ | |
c906108c SS |
4153 | top_stack->cur_st = st; |
4154 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
4155 | GLOBAL_BLOCK); | |
4156 | top_stack->blocktype = stFile; | |
4157 | top_stack->maxsyms | |
4158 | = (debug_info->symbolic_header.isymMax | |
4159 | + debug_info->symbolic_header.ipdMax | |
4160 | + debug_info->symbolic_header.iextMax); | |
4161 | ||
4162 | ext_ptr = PST_PRIVATE (pst)->extern_tab; | |
4163 | for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) | |
b8fbeb18 | 4164 | parse_external (ext_ptr, fh->fBigendian, pst->section_offsets, pst->objfile); |
c906108c SS |
4165 | |
4166 | /* If there are undefined symbols, tell the user. | |
c5aa993b JM |
4167 | The alpha has an undefined symbol for every symbol that is |
4168 | from a shared library, so tell the user only if verbose is on. */ | |
c906108c SS |
4169 | if (info_verbose && n_undef_symbols) |
4170 | { | |
4171 | printf_filtered ("File %s contains %d unresolved references:", | |
4172 | st->filename, n_undef_symbols); | |
4173 | printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n", | |
4174 | n_undef_vars, n_undef_procs, n_undef_labels); | |
4175 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; | |
4176 | ||
4177 | } | |
4178 | pop_parse_stack (); | |
4179 | ||
4180 | st->primary = 1; | |
4181 | ||
c5aa993b | 4182 | /* Sort the symbol table now, we are done adding symbols to it. */ |
c906108c SS |
4183 | sort_symtab_syms (st); |
4184 | ||
4185 | sort_blocks (st); | |
4186 | } | |
4187 | ||
4188 | /* Now link the psymtab and the symtab. */ | |
4189 | pst->symtab = st; | |
4190 | ||
4191 | current_objfile = NULL; | |
4192 | } | |
4193 | \f | |
4194 | /* Ancillary parsing procedures. */ | |
4195 | ||
4196 | /* Return 1 if the symbol pointed to by SH has a cross reference | |
4197 | to an opaque aggregate type, else 0. */ | |
4198 | ||
4199 | static int | |
fba45db2 | 4200 | has_opaque_xref (FDR *fh, SYMR *sh) |
c906108c SS |
4201 | { |
4202 | TIR tir; | |
4203 | union aux_ext *ax; | |
4204 | RNDXR rn[1]; | |
4205 | unsigned int rf; | |
4206 | ||
4207 | if (sh->index == indexNil) | |
4208 | return 0; | |
4209 | ||
4210 | ax = debug_info->external_aux + fh->iauxBase + sh->index; | |
4211 | (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir); | |
4212 | if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum) | |
4213 | return 0; | |
4214 | ||
4215 | ax++; | |
4216 | (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn); | |
4217 | if (rn->rfd == 0xfff) | |
4218 | rf = AUX_GET_ISYM (fh->fBigendian, ax + 1); | |
4219 | else | |
4220 | rf = rn->rfd; | |
4221 | if (rf != -1) | |
4222 | return 0; | |
4223 | return 1; | |
4224 | } | |
4225 | ||
4226 | /* Lookup the type at relative index RN. Return it in TPP | |
4227 | if found and in any event come up with its name PNAME. | |
4228 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). | |
4229 | Return value says how many aux symbols we ate. */ | |
4230 | ||
4231 | static int | |
fba45db2 KB |
4232 | 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. */ |
4233 | char **pname, int bigend, char *sym_name) | |
c906108c SS |
4234 | { |
4235 | RNDXR rn[1]; | |
4236 | unsigned int rf; | |
4237 | int result = 1; | |
4238 | FDR *fh; | |
4239 | char *esh; | |
4240 | SYMR sh; | |
4241 | int xref_fd; | |
4242 | struct mdebug_pending *pend; | |
4243 | ||
c5aa993b | 4244 | *tpp = (struct type *) NULL; |
c906108c SS |
4245 | |
4246 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
4247 | ||
4248 | /* Escape index means 'the next one' */ | |
4249 | if (rn->rfd == 0xfff) | |
4250 | { | |
4251 | result++; | |
4252 | rf = AUX_GET_ISYM (bigend, ax + 1); | |
4253 | } | |
4254 | else | |
4255 | { | |
4256 | rf = rn->rfd; | |
4257 | } | |
4258 | ||
4259 | /* mips cc uses a rf of -1 for opaque struct definitions. | |
4260 | Set TYPE_FLAG_STUB for these types so that check_typedef will | |
4261 | resolve them if the struct gets defined in another compilation unit. */ | |
4262 | if (rf == -1) | |
4263 | { | |
4264 | *pname = "<undefined>"; | |
0b3d7c6d | 4265 | *tpp = init_type (type_code, 0, TYPE_FLAG_STUB, (char *) NULL, current_objfile); |
c906108c SS |
4266 | return result; |
4267 | } | |
4268 | ||
4269 | /* mips cc uses an escaped rn->index of 0 for struct return types | |
4270 | of procedures that were compiled without -g. These will always remain | |
4271 | undefined. */ | |
4272 | if (rn->rfd == 0xfff && rn->index == 0) | |
4273 | { | |
4274 | *pname = "<undefined>"; | |
4275 | return result; | |
4276 | } | |
4277 | ||
4278 | /* Find the relative file descriptor and the symbol in it. */ | |
4279 | fh = get_rfd (fd, rf); | |
4280 | xref_fd = fh - debug_info->fdr; | |
4281 | ||
4282 | if (rn->index >= fh->csym) | |
4283 | { | |
4284 | /* File indirect entry is corrupt. */ | |
4285 | *pname = "<illegal>"; | |
4286 | complain (&bad_rfd_entry_complaint, | |
4287 | sym_name, xref_fd, rn->index); | |
4288 | return result; | |
4289 | } | |
4290 | ||
4291 | /* If we have processed this symbol then we left a forwarding | |
4292 | pointer to the type in the pending list. If not, we`ll put | |
4293 | it in a list of pending types, to be processed later when | |
4294 | the file will be. In any event, we collect the name for the | |
4295 | type here. */ | |
4296 | ||
4297 | esh = ((char *) debug_info->external_sym | |
4298 | + ((fh->isymBase + rn->index) | |
4299 | * debug_swap->external_sym_size)); | |
4300 | (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh); | |
4301 | ||
4302 | /* Make sure that this type of cross reference can be handled. */ | |
4303 | if ((sh.sc != scInfo | |
4304 | || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect | |
4305 | && sh.st != stStruct && sh.st != stUnion | |
4306 | && sh.st != stEnum)) | |
c5aa993b | 4307 | && (sh.st != stBlock || !SC_IS_COMMON (sh.sc))) |
c906108c SS |
4308 | { |
4309 | /* File indirect entry is corrupt. */ | |
4310 | *pname = "<illegal>"; | |
4311 | complain (&bad_rfd_entry_complaint, | |
4312 | sym_name, xref_fd, rn->index); | |
4313 | return result; | |
4314 | } | |
4315 | ||
4316 | *pname = debug_info->ss + fh->issBase + sh.iss; | |
4317 | ||
4318 | pend = is_pending_symbol (fh, esh); | |
4319 | if (pend) | |
4320 | *tpp = pend->t; | |
4321 | else | |
4322 | { | |
4323 | /* We have not yet seen this type. */ | |
4324 | ||
4325 | if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect) | |
4326 | { | |
4327 | TIR tir; | |
4328 | ||
4329 | /* alpha cc puts out a stTypedef with a sh.iss of zero for | |
4330 | two cases: | |
4331 | a) forward declarations of structs/unions/enums which are not | |
c5aa993b JM |
4332 | defined in this compilation unit. |
4333 | For these the type will be void. This is a bad design decision | |
4334 | as cross referencing across compilation units is impossible | |
4335 | due to the missing name. | |
c906108c | 4336 | b) forward declarations of structs/unions/enums/typedefs which |
c5aa993b JM |
4337 | are defined later in this file or in another file in the same |
4338 | compilation unit. Irix5 cc uses a stIndirect symbol for this. | |
4339 | Simply cross reference those again to get the true type. | |
c906108c SS |
4340 | The forward references are not entered in the pending list and |
4341 | in the symbol table. */ | |
4342 | ||
4343 | (*debug_swap->swap_tir_in) (bigend, | |
4344 | &(debug_info->external_aux | |
4345 | + fh->iauxBase + sh.index)->a_ti, | |
4346 | &tir); | |
4347 | if (tir.tq0 != tqNil) | |
4348 | complain (&illegal_forward_tq0_complaint, sym_name); | |
4349 | switch (tir.bt) | |
4350 | { | |
4351 | case btVoid: | |
4352 | *tpp = init_type (type_code, 0, 0, (char *) NULL, | |
4353 | current_objfile); | |
c5aa993b | 4354 | *pname = "<undefined>"; |
c906108c SS |
4355 | break; |
4356 | ||
4357 | case btStruct: | |
4358 | case btUnion: | |
4359 | case btEnum: | |
4360 | cross_ref (xref_fd, | |
4361 | (debug_info->external_aux | |
4362 | + fh->iauxBase + sh.index + 1), | |
4363 | tpp, type_code, pname, | |
4364 | fh->fBigendian, sym_name); | |
4365 | break; | |
4366 | ||
4367 | case btTypedef: | |
4368 | /* Follow a forward typedef. This might recursively | |
c5aa993b JM |
4369 | call cross_ref till we get a non typedef'ed type. |
4370 | FIXME: This is not correct behaviour, but gdb currently | |
4371 | cannot handle typedefs without type copying. Type | |
4372 | copying is impossible as we might have mutual forward | |
4373 | references between two files and the copied type would not | |
4374 | get filled in when we later parse its definition. */ | |
c906108c SS |
4375 | *tpp = parse_type (xref_fd, |
4376 | debug_info->external_aux + fh->iauxBase, | |
4377 | sh.index, | |
c5aa993b | 4378 | (int *) NULL, |
c906108c SS |
4379 | fh->fBigendian, |
4380 | debug_info->ss + fh->issBase + sh.iss); | |
4381 | add_pending (fh, esh, *tpp); | |
4382 | break; | |
4383 | ||
4384 | default: | |
4385 | complain (&illegal_forward_bt_complaint, tir.bt, sym_name); | |
4386 | *tpp = init_type (type_code, 0, 0, (char *) NULL, | |
4387 | current_objfile); | |
4388 | break; | |
4389 | } | |
4390 | return result; | |
4391 | } | |
4392 | else if (sh.st == stTypedef) | |
4393 | { | |
4394 | /* Parse the type for a normal typedef. This might recursively call | |
4395 | cross_ref till we get a non typedef'ed type. | |
4396 | FIXME: This is not correct behaviour, but gdb currently | |
4397 | cannot handle typedefs without type copying. But type copying is | |
4398 | impossible as we might have mutual forward references between | |
4399 | two files and the copied type would not get filled in when | |
4400 | we later parse its definition. */ | |
4401 | *tpp = parse_type (xref_fd, | |
4402 | debug_info->external_aux + fh->iauxBase, | |
4403 | sh.index, | |
c5aa993b | 4404 | (int *) NULL, |
c906108c SS |
4405 | fh->fBigendian, |
4406 | debug_info->ss + fh->issBase + sh.iss); | |
4407 | } | |
4408 | else | |
4409 | { | |
4410 | /* Cross reference to a struct/union/enum which is defined | |
4411 | in another file in the same compilation unit but that file | |
4412 | has not been parsed yet. | |
4413 | Initialize the type only, it will be filled in when | |
4414 | it's definition is parsed. */ | |
4415 | *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
4416 | } | |
4417 | add_pending (fh, esh, *tpp); | |
4418 | } | |
4419 | ||
4420 | /* We used one auxent normally, two if we got a "next one" rf. */ | |
4421 | return result; | |
4422 | } | |
4423 | ||
4424 | ||
4425 | /* Quick&dirty lookup procedure, to avoid the MI ones that require | |
4426 | keeping the symtab sorted */ | |
4427 | ||
4428 | static struct symbol * | |
fba45db2 KB |
4429 | mylookup_symbol (char *name, register struct block *block, |
4430 | namespace_enum namespace, enum address_class class) | |
c906108c | 4431 | { |
e88c90f2 DJ |
4432 | int i, inc; |
4433 | struct symbol *sym; | |
c906108c | 4434 | |
c906108c | 4435 | inc = name[0]; |
e88c90f2 | 4436 | ALL_BLOCK_SYMBOLS (block, i, sym) |
c906108c | 4437 | { |
c906108c SS |
4438 | if (SYMBOL_NAME (sym)[0] == inc |
4439 | && SYMBOL_NAMESPACE (sym) == namespace | |
4440 | && SYMBOL_CLASS (sym) == class | |
4441 | && strcmp (SYMBOL_NAME (sym), name) == 0) | |
4442 | return sym; | |
c906108c | 4443 | } |
e88c90f2 | 4444 | |
c906108c SS |
4445 | block = BLOCK_SUPERBLOCK (block); |
4446 | if (block) | |
4447 | return mylookup_symbol (name, block, namespace, class); | |
4448 | return 0; | |
4449 | } | |
4450 | ||
4451 | ||
4452 | /* Add a new symbol S to a block B. | |
4453 | Infrequently, we will need to reallocate the block to make it bigger. | |
4454 | We only detect this case when adding to top_stack->cur_block, since | |
4455 | that's the only time we know how big the block is. FIXME. */ | |
4456 | ||
4457 | static void | |
fba45db2 | 4458 | add_symbol (struct symbol *s, struct block *b) |
c906108c SS |
4459 | { |
4460 | int nsyms = BLOCK_NSYMS (b)++; | |
4461 | struct block *origb; | |
4462 | struct parse_stack *stackp; | |
4463 | ||
4464 | if (b == top_stack->cur_block && | |
4465 | nsyms >= top_stack->maxsyms) | |
4466 | { | |
4467 | complain (&block_overflow_complaint, SYMBOL_NAME (s)); | |
4468 | /* In this case shrink_block is actually grow_block, since | |
c5aa993b | 4469 | BLOCK_NSYMS(b) is larger than its current size. */ |
c906108c SS |
4470 | origb = b; |
4471 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); | |
4472 | ||
4473 | /* Now run through the stack replacing pointers to the | |
c5aa993b JM |
4474 | original block. shrink_block has already done this |
4475 | for the blockvector and BLOCK_FUNCTION. */ | |
c906108c SS |
4476 | for (stackp = top_stack; stackp; stackp = stackp->next) |
4477 | { | |
4478 | if (stackp->cur_block == origb) | |
4479 | { | |
4480 | stackp->cur_block = b; | |
4481 | stackp->maxsyms = BLOCK_NSYMS (b); | |
4482 | } | |
4483 | } | |
4484 | } | |
4485 | BLOCK_SYM (b, nsyms) = s; | |
4486 | } | |
4487 | ||
4488 | /* Add a new block B to a symtab S */ | |
4489 | ||
4490 | static void | |
fba45db2 | 4491 | add_block (struct block *b, struct symtab *s) |
c906108c SS |
4492 | { |
4493 | struct blockvector *bv = BLOCKVECTOR (s); | |
4494 | ||
12b9c64f | 4495 | bv = (struct blockvector *) xrealloc ((void *) bv, |
c906108c SS |
4496 | (sizeof (struct blockvector) |
4497 | + BLOCKVECTOR_NBLOCKS (bv) | |
4498 | * sizeof (bv->block))); | |
4499 | if (bv != BLOCKVECTOR (s)) | |
4500 | BLOCKVECTOR (s) = bv; | |
4501 | ||
4502 | BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b; | |
4503 | } | |
4504 | ||
4505 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. | |
4506 | MIPS' linenumber encoding might need more than one byte | |
4507 | to describe it, LAST is used to detect these continuation lines. | |
4508 | ||
4509 | Combining lines with the same line number seems like a bad idea. | |
4510 | E.g: There could be a line number entry with the same line number after the | |
4511 | prologue and GDB should not ignore it (this is a better way to find | |
4512 | a prologue than mips_skip_prologue). | |
4513 | But due to the compressed line table format there are line number entries | |
4514 | for the same line which are needed to bridge the gap to the next | |
4515 | line number entry. These entries have a bogus address info with them | |
4516 | and we are unable to tell them from intended duplicate line number | |
4517 | entries. | |
4518 | This is another reason why -ggdb debugging format is preferable. */ | |
4519 | ||
4520 | static int | |
fba45db2 | 4521 | add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last) |
c906108c SS |
4522 | { |
4523 | /* DEC c89 sometimes produces zero linenos which confuse gdb. | |
4524 | Change them to something sensible. */ | |
4525 | if (lineno == 0) | |
4526 | lineno = 1; | |
4527 | if (last == 0) | |
4528 | last = -2; /* make sure we record first line */ | |
4529 | ||
4530 | if (last == lineno) /* skip continuation lines */ | |
4531 | return lineno; | |
4532 | ||
4533 | lt->item[lt->nitems].line = lineno; | |
4534 | lt->item[lt->nitems++].pc = adr << 2; | |
4535 | return lineno; | |
4536 | } | |
4537 | \f | |
4538 | /* Sorting and reordering procedures */ | |
4539 | ||
4540 | /* Blocks with a smaller low bound should come first */ | |
4541 | ||
4542 | static int | |
12b9c64f | 4543 | compare_blocks (const void *arg1, const void *arg2) |
c906108c SS |
4544 | { |
4545 | register int addr_diff; | |
4546 | struct block **b1 = (struct block **) arg1; | |
4547 | struct block **b2 = (struct block **) arg2; | |
4548 | ||
4549 | addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2))); | |
4550 | if (addr_diff == 0) | |
4551 | return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1))); | |
4552 | return addr_diff; | |
4553 | } | |
4554 | ||
4555 | /* Sort the blocks of a symtab S. | |
4556 | Reorder the blocks in the blockvector by code-address, | |
4557 | as required by some MI search routines */ | |
4558 | ||
4559 | static void | |
fba45db2 | 4560 | sort_blocks (struct symtab *s) |
c906108c SS |
4561 | { |
4562 | struct blockvector *bv = BLOCKVECTOR (s); | |
4563 | ||
4564 | if (BLOCKVECTOR_NBLOCKS (bv) <= 2) | |
4565 | { | |
4566 | /* Cosmetic */ | |
4567 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0) | |
4568 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0; | |
4569 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0) | |
4570 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0; | |
4571 | return; | |
4572 | } | |
4573 | /* | |
4574 | * This is very unfortunate: normally all functions are compiled in | |
4575 | * the order they are found, but if the file is compiled -O3 things | |
4576 | * are very different. It would be nice to find a reliable test | |
4577 | * to detect -O3 images in advance. | |
4578 | */ | |
4579 | if (BLOCKVECTOR_NBLOCKS (bv) > 3) | |
4580 | qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK), | |
4581 | BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK, | |
4582 | sizeof (struct block *), | |
4583 | compare_blocks); | |
4584 | ||
4585 | { | |
4586 | register CORE_ADDR high = 0; | |
4587 | register int i, j = BLOCKVECTOR_NBLOCKS (bv); | |
4588 | ||
4589 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) | |
4590 | if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i))) | |
4591 | high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)); | |
4592 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high; | |
4593 | } | |
4594 | ||
4595 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = | |
4596 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK)); | |
4597 | ||
4598 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4599 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4600 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4601 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4602 | } | |
4603 | \f | |
4604 | ||
4605 | /* Constructor/restructor/destructor procedures */ | |
4606 | ||
4607 | /* Allocate a new symtab for NAME. Needs an estimate of how many symbols | |
4608 | MAXSYMS and linenumbers MAXLINES we'll put in it */ | |
4609 | ||
4610 | static struct symtab * | |
fba45db2 | 4611 | new_symtab (char *name, int maxsyms, int maxlines, struct objfile *objfile) |
c906108c SS |
4612 | { |
4613 | struct symtab *s = allocate_symtab (name, objfile); | |
4614 | ||
4615 | LINETABLE (s) = new_linetable (maxlines); | |
4616 | ||
4617 | /* All symtabs must have at least two blocks */ | |
4618 | BLOCKVECTOR (s) = new_bvect (2); | |
4619 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms); | |
4620 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms); | |
4621 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) = | |
4622 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
4623 | ||
4624 | s->free_code = free_linetable; | |
4625 | s->debugformat = obsavestring ("ECOFF", 5, | |
c5aa993b | 4626 | &objfile->symbol_obstack); |
c906108c SS |
4627 | return (s); |
4628 | } | |
4629 | ||
4630 | /* Allocate a new partial_symtab NAME */ | |
4631 | ||
4632 | static struct partial_symtab * | |
fba45db2 | 4633 | new_psymtab (char *name, struct objfile *objfile) |
c906108c SS |
4634 | { |
4635 | struct partial_symtab *psymtab; | |
4636 | ||
4637 | psymtab = allocate_psymtab (name, objfile); | |
d4f3574e | 4638 | psymtab->section_offsets = objfile->section_offsets; |
c906108c SS |
4639 | |
4640 | /* Keep a backpointer to the file's symbols */ | |
4641 | ||
4642 | psymtab->read_symtab_private = ((char *) | |
4643 | obstack_alloc (&objfile->psymbol_obstack, | |
4644 | sizeof (struct symloc))); | |
12b9c64f | 4645 | memset (psymtab->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
4646 | CUR_BFD (psymtab) = cur_bfd; |
4647 | DEBUG_SWAP (psymtab) = debug_swap; | |
4648 | DEBUG_INFO (psymtab) = debug_info; | |
4649 | PENDING_LIST (psymtab) = pending_list; | |
4650 | ||
4651 | /* The way to turn this into a symtab is to call... */ | |
4652 | psymtab->read_symtab = mdebug_psymtab_to_symtab; | |
4653 | return (psymtab); | |
4654 | } | |
4655 | ||
4656 | ||
4657 | /* Allocate a linetable array of the given SIZE. Since the struct | |
4658 | already includes one item, we subtract one when calculating the | |
4659 | proper size to allocate. */ | |
4660 | ||
4661 | static struct linetable * | |
fba45db2 | 4662 | new_linetable (int size) |
c906108c SS |
4663 | { |
4664 | struct linetable *l; | |
4665 | ||
4666 | size = (size - 1) * sizeof (l->item) + sizeof (struct linetable); | |
4667 | l = (struct linetable *) xmalloc (size); | |
4668 | l->nitems = 0; | |
4669 | return l; | |
4670 | } | |
4671 | ||
4672 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, | |
4673 | I am not so sure about the 3.4 ones. | |
4674 | ||
4675 | Since the struct linetable already includes one item, we subtract one when | |
4676 | calculating the proper size to allocate. */ | |
4677 | ||
4678 | static struct linetable * | |
fba45db2 | 4679 | shrink_linetable (struct linetable *lt) |
c906108c SS |
4680 | { |
4681 | ||
12b9c64f | 4682 | return (struct linetable *) xrealloc ((void *) lt, |
c906108c SS |
4683 | (sizeof (struct linetable) |
4684 | + ((lt->nitems - 1) | |
4685 | * sizeof (lt->item)))); | |
4686 | } | |
4687 | ||
4688 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ | |
4689 | ||
4690 | static struct blockvector * | |
fba45db2 | 4691 | new_bvect (int nblocks) |
c906108c SS |
4692 | { |
4693 | struct blockvector *bv; | |
4694 | int size; | |
4695 | ||
4696 | size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); | |
4697 | bv = (struct blockvector *) xzalloc (size); | |
4698 | ||
4699 | BLOCKVECTOR_NBLOCKS (bv) = nblocks; | |
4700 | ||
4701 | return bv; | |
4702 | } | |
4703 | ||
4704 | /* Allocate and zero a new block of MAXSYMS symbols */ | |
4705 | ||
4706 | static struct block * | |
fba45db2 | 4707 | new_block (int maxsyms) |
c906108c SS |
4708 | { |
4709 | int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *); | |
4710 | ||
4711 | return (struct block *) xzalloc (size); | |
4712 | } | |
4713 | ||
4714 | /* Ooops, too big. Shrink block B in symtab S to its minimal size. | |
4715 | Shrink_block can also be used by add_symbol to grow a block. */ | |
4716 | ||
4717 | static struct block * | |
fba45db2 | 4718 | shrink_block (struct block *b, struct symtab *s) |
c906108c SS |
4719 | { |
4720 | struct block *new; | |
4721 | struct blockvector *bv = BLOCKVECTOR (s); | |
4722 | int i; | |
4723 | ||
4724 | /* Just reallocate it and fix references to the old one */ | |
4725 | ||
12b9c64f | 4726 | new = (struct block *) xrealloc ((void *) b, |
c906108c SS |
4727 | (sizeof (struct block) |
4728 | + ((BLOCK_NSYMS (b) - 1) | |
4729 | * sizeof (struct symbol *)))); | |
4730 | ||
261397f8 DJ |
4731 | /* FIXME: Not worth hashing this block as it's built. */ |
4732 | /* All callers should have created the block with new_block (), which | |
4733 | would mean it was not previously hashed. Make sure. */ | |
4734 | gdb_assert (BLOCK_HASHTABLE (new) == 0); | |
4735 | ||
c906108c | 4736 | /* Should chase pointers to old one. Fortunately, that`s just |
c5aa993b | 4737 | the block`s function and inferior blocks */ |
c906108c SS |
4738 | if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b) |
4739 | SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new; | |
4740 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
4741 | if (BLOCKVECTOR_BLOCK (bv, i) == b) | |
4742 | BLOCKVECTOR_BLOCK (bv, i) = new; | |
4743 | else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b) | |
4744 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new; | |
4745 | return new; | |
4746 | } | |
4747 | ||
4748 | /* Create a new symbol with printname NAME */ | |
4749 | ||
4750 | static struct symbol * | |
fba45db2 | 4751 | new_symbol (char *name) |
c906108c SS |
4752 | { |
4753 | struct symbol *s = ((struct symbol *) | |
4754 | obstack_alloc (¤t_objfile->symbol_obstack, | |
4755 | sizeof (struct symbol))); | |
4756 | ||
12b9c64f | 4757 | memset (s, 0, sizeof (*s)); |
c906108c SS |
4758 | SYMBOL_NAME (s) = obsavestring (name, strlen (name), |
4759 | ¤t_objfile->symbol_obstack); | |
4760 | SYMBOL_LANGUAGE (s) = psymtab_language; | |
4761 | SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack); | |
4762 | return s; | |
4763 | } | |
4764 | ||
4765 | /* Create a new type with printname NAME */ | |
4766 | ||
4767 | static struct type * | |
fba45db2 | 4768 | new_type (char *name) |
c906108c SS |
4769 | { |
4770 | struct type *t; | |
4771 | ||
4772 | t = alloc_type (current_objfile); | |
4773 | TYPE_NAME (t) = name; | |
4774 | TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default; | |
4775 | return t; | |
4776 | } | |
4777 | \f | |
4778 | /* Read ECOFF debugging information from a BFD section. This is | |
4779 | called from elfread.c. It parses the section into a | |
4780 | ecoff_debug_info struct, and then lets the rest of the file handle | |
4781 | it as normal. */ | |
4782 | ||
4783 | void | |
fba45db2 KB |
4784 | elfmdebug_build_psymtabs (struct objfile *objfile, |
4785 | const struct ecoff_debug_swap *swap, asection *sec) | |
c906108c SS |
4786 | { |
4787 | bfd *abfd = objfile->obfd; | |
4788 | struct ecoff_debug_info *info; | |
4789 | ||
4790 | info = ((struct ecoff_debug_info *) | |
4791 | obstack_alloc (&objfile->psymbol_obstack, | |
4792 | sizeof (struct ecoff_debug_info))); | |
4793 | ||
4794 | if (!(*swap->read_debug_info) (abfd, sec, info)) | |
4795 | error ("Error reading ECOFF debugging information: %s", | |
4796 | bfd_errmsg (bfd_get_error ())); | |
4797 | ||
d4f3574e | 4798 | mdebug_build_psymtabs (objfile, swap, info); |
c906108c SS |
4799 | } |
4800 | \f | |
4801 | ||
4802 | /* Things used for calling functions in the inferior. | |
4803 | These functions are exported to our companion | |
4804 | mips-tdep.c file and are here because they play | |
4805 | with the symbol-table explicitly. */ | |
4806 | ||
4807 | /* Sigtramp: make sure we have all the necessary information | |
4808 | about the signal trampoline code. Since the official code | |
4809 | from MIPS does not do so, we make up that information ourselves. | |
4810 | If they fix the library (unlikely) this code will neutralize itself. */ | |
4811 | ||
4812 | /* FIXME: This function is called only by mips-tdep.c. It needs to be | |
4813 | here because it calls functions defined in this file, but perhaps | |
4814 | this could be handled in a better way. Only compile it in when | |
4815 | tm-mips.h is included. */ | |
4816 | ||
4817 | #ifdef TM_MIPS_H | |
4818 | ||
4819 | void | |
fba45db2 | 4820 | fixup_sigtramp (void) |
c906108c SS |
4821 | { |
4822 | struct symbol *s; | |
4823 | struct symtab *st; | |
4824 | struct block *b, *b0 = NULL; | |
4825 | ||
4826 | sigtramp_address = -1; | |
4827 | ||
4828 | /* We have to handle the following cases here: | |
4829 | a) The Mips library has a sigtramp label within sigvec. | |
4830 | b) Irix has a _sigtramp which we want to use, but it also has sigvec. */ | |
4831 | s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL); | |
4832 | if (s != 0) | |
4833 | { | |
4834 | b0 = SYMBOL_BLOCK_VALUE (s); | |
4835 | s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL); | |
4836 | } | |
4837 | if (s == 0) | |
4838 | { | |
4839 | /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */ | |
4840 | s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL); | |
4841 | } | |
4842 | ||
4843 | /* But maybe this program uses its own version of sigvec */ | |
4844 | if (s == 0) | |
4845 | return; | |
4846 | ||
4847 | /* Did we or MIPSco fix the library ? */ | |
4848 | if (SYMBOL_CLASS (s) == LOC_BLOCK) | |
4849 | { | |
4850 | sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s)); | |
4851 | sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s)); | |
4852 | return; | |
4853 | } | |
4854 | ||
4855 | sigtramp_address = SYMBOL_VALUE (s); | |
4856 | sigtramp_end = sigtramp_address + 0x88; /* black magic */ | |
4857 | ||
4858 | /* But what symtab does it live in ? */ | |
4859 | st = find_pc_symtab (SYMBOL_VALUE (s)); | |
4860 | ||
4861 | /* | |
4862 | * Ok, there goes the fix: turn it into a procedure, with all the | |
4863 | * needed info. Note we make it a nested procedure of sigvec, | |
4864 | * which is the way the (assembly) code is actually written. | |
4865 | */ | |
4866 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
4867 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
4868 | SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL, | |
4869 | st->objfile); | |
4870 | TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = mdebug_type_void; | |
4871 | ||
4872 | /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */ | |
4873 | b = new_block (1); | |
4874 | SYMBOL_BLOCK_VALUE (s) = b; | |
4875 | BLOCK_START (b) = sigtramp_address; | |
4876 | BLOCK_END (b) = sigtramp_end; | |
4877 | BLOCK_FUNCTION (b) = s; | |
4878 | BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0); | |
4879 | add_block (b, st); | |
4880 | sort_blocks (st); | |
4881 | ||
4882 | /* Make a MIPS_EFI_SYMBOL_NAME entry for it */ | |
4883 | { | |
4884 | struct mips_extra_func_info *e = | |
c5aa993b JM |
4885 | ((struct mips_extra_func_info *) |
4886 | xzalloc (sizeof (struct mips_extra_func_info))); | |
c906108c SS |
4887 | |
4888 | e->numargs = 0; /* the kernel thinks otherwise */ | |
4889 | e->pdr.frameoffset = 32; | |
4890 | e->pdr.framereg = SP_REGNUM; | |
4891 | /* Note that setting pcreg is no longer strictly necessary as | |
4892 | mips_frame_saved_pc is now aware of signal handler frames. */ | |
4893 | e->pdr.pcreg = PC_REGNUM; | |
4894 | e->pdr.regmask = -2; | |
4895 | /* Offset to saved r31, in the sigtramp case the saved registers | |
4896 | are above the frame in the sigcontext. | |
4897 | We have 4 alignment bytes, 12 bytes for onstack, mask and pc, | |
4898 | 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp | |
4899 | and 32 * 4 bytes for the floating point registers. */ | |
4900 | e->pdr.regoffset = 4 + 12 + 31 * 4; | |
4901 | e->pdr.fregmask = -1; | |
4902 | /* Offset to saved f30 (first saved *double* register). */ | |
4903 | e->pdr.fregoffset = 4 + 12 + 32 * 4 + 12 + 30 * 4; | |
4904 | e->pdr.isym = (long) s; | |
4905 | e->pdr.adr = sigtramp_address; | |
4906 | ||
4907 | current_objfile = st->objfile; /* Keep new_symbol happy */ | |
4908 | s = new_symbol (MIPS_EFI_SYMBOL_NAME); | |
4909 | SYMBOL_VALUE (s) = (long) e; | |
4910 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; | |
4911 | SYMBOL_CLASS (s) = LOC_CONST; | |
4912 | SYMBOL_TYPE (s) = mdebug_type_void; | |
4913 | current_objfile = NULL; | |
4914 | } | |
4915 | ||
4916 | BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s; | |
4917 | } | |
4918 | ||
c5aa993b | 4919 | #endif /* TM_MIPS_H */ |
c906108c SS |
4920 | |
4921 | void | |
fba45db2 | 4922 | _initialize_mdebugread (void) |
c906108c SS |
4923 | { |
4924 | mdebug_type_void = | |
4925 | init_type (TYPE_CODE_VOID, 1, | |
4926 | 0, | |
4927 | "void", (struct objfile *) NULL); | |
4928 | mdebug_type_char = | |
4929 | init_type (TYPE_CODE_INT, 1, | |
4930 | 0, | |
4931 | "char", (struct objfile *) NULL); | |
4932 | mdebug_type_unsigned_char = | |
4933 | init_type (TYPE_CODE_INT, 1, | |
4934 | TYPE_FLAG_UNSIGNED, | |
4935 | "unsigned char", (struct objfile *) NULL); | |
4936 | mdebug_type_short = | |
4937 | init_type (TYPE_CODE_INT, 2, | |
4938 | 0, | |
4939 | "short", (struct objfile *) NULL); | |
4940 | mdebug_type_unsigned_short = | |
4941 | init_type (TYPE_CODE_INT, 2, | |
4942 | TYPE_FLAG_UNSIGNED, | |
4943 | "unsigned short", (struct objfile *) NULL); | |
4944 | mdebug_type_int_32 = | |
4945 | init_type (TYPE_CODE_INT, 4, | |
4946 | 0, | |
4947 | "int", (struct objfile *) NULL); | |
4948 | mdebug_type_unsigned_int_32 = | |
4949 | init_type (TYPE_CODE_INT, 4, | |
4950 | TYPE_FLAG_UNSIGNED, | |
4951 | "unsigned int", (struct objfile *) NULL); | |
4952 | mdebug_type_int_64 = | |
4953 | init_type (TYPE_CODE_INT, 8, | |
4954 | 0, | |
4955 | "int", (struct objfile *) NULL); | |
4956 | mdebug_type_unsigned_int_64 = | |
4957 | init_type (TYPE_CODE_INT, 8, | |
4958 | TYPE_FLAG_UNSIGNED, | |
4959 | "unsigned int", (struct objfile *) NULL); | |
4960 | mdebug_type_long_32 = | |
4961 | init_type (TYPE_CODE_INT, 4, | |
4962 | 0, | |
4963 | "long", (struct objfile *) NULL); | |
4964 | mdebug_type_unsigned_long_32 = | |
4965 | init_type (TYPE_CODE_INT, 4, | |
4966 | TYPE_FLAG_UNSIGNED, | |
4967 | "unsigned long", (struct objfile *) NULL); | |
4968 | mdebug_type_long_64 = | |
4969 | init_type (TYPE_CODE_INT, 8, | |
4970 | 0, | |
4971 | "long", (struct objfile *) NULL); | |
4972 | mdebug_type_unsigned_long_64 = | |
4973 | init_type (TYPE_CODE_INT, 8, | |
4974 | TYPE_FLAG_UNSIGNED, | |
4975 | "unsigned long", (struct objfile *) NULL); | |
4976 | mdebug_type_long_long_64 = | |
4977 | init_type (TYPE_CODE_INT, 8, | |
4978 | 0, | |
4979 | "long long", (struct objfile *) NULL); | |
c5aa993b | 4980 | mdebug_type_unsigned_long_long_64 = |
c906108c SS |
4981 | init_type (TYPE_CODE_INT, 8, |
4982 | TYPE_FLAG_UNSIGNED, | |
4983 | "unsigned long long", (struct objfile *) NULL); | |
4984 | mdebug_type_adr_32 = | |
4985 | init_type (TYPE_CODE_PTR, 4, | |
4986 | TYPE_FLAG_UNSIGNED, | |
4987 | "adr_32", (struct objfile *) NULL); | |
4988 | TYPE_TARGET_TYPE (mdebug_type_adr_32) = mdebug_type_void; | |
4989 | mdebug_type_adr_64 = | |
4990 | init_type (TYPE_CODE_PTR, 8, | |
4991 | TYPE_FLAG_UNSIGNED, | |
4992 | "adr_64", (struct objfile *) NULL); | |
4993 | TYPE_TARGET_TYPE (mdebug_type_adr_64) = mdebug_type_void; | |
4994 | mdebug_type_float = | |
4995 | init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
4996 | 0, | |
4997 | "float", (struct objfile *) NULL); | |
4998 | mdebug_type_double = | |
4999 | init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
5000 | 0, | |
5001 | "double", (struct objfile *) NULL); | |
5002 | mdebug_type_complex = | |
5003 | init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
5004 | 0, | |
5005 | "complex", (struct objfile *) NULL); | |
5006 | TYPE_TARGET_TYPE (mdebug_type_complex) = mdebug_type_float; | |
5007 | mdebug_type_double_complex = | |
5008 | init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
5009 | 0, | |
5010 | "double complex", (struct objfile *) NULL); | |
5011 | TYPE_TARGET_TYPE (mdebug_type_double_complex) = mdebug_type_double; | |
5012 | ||
5013 | /* Is a "string" the way btString means it the same as TYPE_CODE_STRING? | |
5014 | FIXME. */ | |
5015 | mdebug_type_string = | |
5016 | init_type (TYPE_CODE_STRING, | |
5017 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
5018 | 0, "string", | |
5019 | (struct objfile *) NULL); | |
5020 | ||
5021 | /* We use TYPE_CODE_INT to print these as integers. Does this do any | |
5022 | good? Would we be better off with TYPE_CODE_ERROR? Should | |
5023 | TYPE_CODE_ERROR print things in hex if it knows the size? */ | |
5024 | mdebug_type_fixed_dec = | |
5025 | init_type (TYPE_CODE_INT, | |
5026 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
5027 | 0, "fixed decimal", | |
5028 | (struct objfile *) NULL); | |
5029 | ||
5030 | mdebug_type_float_dec = | |
5031 | init_type (TYPE_CODE_ERROR, | |
5032 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
5033 | 0, "floating decimal", | |
5034 | (struct objfile *) NULL); | |
5035 | ||
5036 | nodebug_func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0, | |
5037 | "<function, no debug info>", NULL); | |
5038 | TYPE_TARGET_TYPE (nodebug_func_symbol_type) = mdebug_type_int; | |
5039 | nodebug_var_symbol_type = | |
5040 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
5041 | "<variable, no debug info>", NULL); | |
5042 | } |