Commit | Line | Data |
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c906108c | 1 | /* Read a symbol table in ECOFF format (Third-Eye). |
ee300cd4 | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
4c38e0a4 | 4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010 |
6aba47ca | 5 | Free Software Foundation, Inc. |
ee300cd4 | 6 | |
c906108c SS |
7 | Original version contributed by Alessandro Forin (af@cs.cmu.edu) at |
8 | CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor | |
9 | at Cygnus Support. | |
10 | ||
c5aa993b | 11 | This file is part of GDB. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is free software; you can redistribute it and/or modify |
14 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 15 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 16 | (at your option) any later version. |
c906108c | 17 | |
c5aa993b JM |
18 | This program is distributed in the hope that it will be useful, |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
c906108c | 22 | |
c5aa993b | 23 | You should have received a copy of the GNU General Public License |
a9762ec7 | 24 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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" | |
c906108c | 48 | #include "objfiles.h" |
04ea0df1 | 49 | #include "gdb_obstack.h" |
c906108c SS |
50 | #include "buildsym.h" |
51 | #include "stabsread.h" | |
52 | #include "complaints.h" | |
53 | #include "demangle.h" | |
261397f8 | 54 | #include "gdb_assert.h" |
fe898f56 | 55 | #include "block.h" |
de4f826b | 56 | #include "dictionary.h" |
5b123146 | 57 | #include "mdebugread.h" |
c906108c SS |
58 | #include "gdb_stat.h" |
59 | #include "gdb_string.h" | |
60 | ||
c906108c SS |
61 | #include "bfd.h" |
62 | ||
63 | #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */ | |
64 | ||
65 | #include "libaout.h" /* Private BFD a.out information. */ | |
66 | #include "aout/aout64.h" | |
67 | #include "aout/stab_gnu.h" /* STABS information */ | |
68 | ||
69 | #include "expression.h" | |
c906108c | 70 | |
a14ed312 | 71 | extern void _initialize_mdebugread (void); |
c906108c | 72 | |
c906108c SS |
73 | /* Provide a way to test if we have both ECOFF and ELF symbol tables. |
74 | We use this define in order to know whether we should override a | |
75 | symbol's ECOFF section with its ELF section. This is necessary in | |
76 | case the symbol's ELF section could not be represented in ECOFF. */ | |
77 | #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
78 | && bfd_get_section_by_name (bfd, ".mdebug") != NULL) | |
c906108c | 79 | \f |
c5aa993b | 80 | |
c906108c SS |
81 | /* We put a pointer to this structure in the read_symtab_private field |
82 | of the psymtab. */ | |
83 | ||
84 | struct symloc | |
c5aa993b JM |
85 | { |
86 | /* Index of the FDR that this psymtab represents. */ | |
87 | int fdr_idx; | |
88 | /* The BFD that the psymtab was created from. */ | |
89 | bfd *cur_bfd; | |
90 | const struct ecoff_debug_swap *debug_swap; | |
91 | struct ecoff_debug_info *debug_info; | |
92 | struct mdebug_pending **pending_list; | |
93 | /* Pointer to external symbols for this file. */ | |
94 | EXTR *extern_tab; | |
95 | /* Size of extern_tab. */ | |
96 | int extern_count; | |
97 | enum language pst_language; | |
98 | }; | |
c906108c SS |
99 | |
100 | #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private) | |
101 | #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx) | |
102 | #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd) | |
103 | #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap) | |
104 | #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info) | |
105 | #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list) | |
106 | ||
107 | #define SC_IS_TEXT(sc) ((sc) == scText \ | |
108 | || (sc) == scRConst \ | |
109 | || (sc) == scInit \ | |
110 | || (sc) == scFini) | |
111 | #define SC_IS_DATA(sc) ((sc) == scData \ | |
112 | || (sc) == scSData \ | |
113 | || (sc) == scRData \ | |
114 | || (sc) == scPData \ | |
115 | || (sc) == scXData) | |
116 | #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon) | |
0e931cf0 JB |
117 | #define SC_IS_BSS(sc) ((sc) == scBss) |
118 | #define SC_IS_SBSS(sc) ((sc) == scSBss) | |
c906108c | 119 | #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined) |
c906108c | 120 | \f |
c906108c | 121 | /* Various complaints about symbol reading that don't abort the process */ |
23136709 KB |
122 | static void |
123 | index_complaint (const char *arg1) | |
124 | { | |
e2e0b3e5 | 125 | complaint (&symfile_complaints, _("bad aux index at symbol %s"), arg1); |
23136709 | 126 | } |
c906108c | 127 | |
23136709 KB |
128 | static void |
129 | unknown_ext_complaint (const char *arg1) | |
130 | { | |
e2e0b3e5 | 131 | complaint (&symfile_complaints, _("unknown external symbol %s"), arg1); |
23136709 | 132 | } |
c906108c | 133 | |
23136709 KB |
134 | static void |
135 | basic_type_complaint (int arg1, const char *arg2) | |
136 | { | |
e2e0b3e5 | 137 | complaint (&symfile_complaints, _("cannot map ECOFF basic type 0x%x for %s"), |
23136709 KB |
138 | arg1, arg2); |
139 | } | |
c906108c | 140 | |
23136709 KB |
141 | static void |
142 | bad_tag_guess_complaint (const char *arg1) | |
143 | { | |
e2e0b3e5 | 144 | complaint (&symfile_complaints, _("guessed tag type of %s incorrectly"), arg1); |
23136709 | 145 | } |
c906108c | 146 | |
23136709 KB |
147 | static void |
148 | bad_rfd_entry_complaint (const char *arg1, int arg2, int arg3) | |
149 | { | |
e2e0b3e5 | 150 | complaint (&symfile_complaints, _("bad rfd entry for %s: file %d, index %d"), |
23136709 KB |
151 | arg1, arg2, arg3); |
152 | } | |
c906108c | 153 | |
23136709 KB |
154 | static void |
155 | unexpected_type_code_complaint (const char *arg1) | |
156 | { | |
e2e0b3e5 | 157 | complaint (&symfile_complaints, _("unexpected type code for %s"), arg1); |
23136709 | 158 | } |
c906108c SS |
159 | |
160 | /* Macros and extra defs */ | |
161 | ||
162 | /* Puns: hard to find whether -g was used and how */ | |
163 | ||
164 | #define MIN_GLEVEL GLEVEL_0 | |
165 | #define compare_glevel(a,b) \ | |
166 | (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \ | |
167 | ((b) == GLEVEL_3) ? -1 : (int)((b) - (a))) | |
168 | \f | |
169 | /* Things that really are local to this module */ | |
170 | ||
171 | /* Remember what we deduced to be the source language of this psymtab. */ | |
172 | ||
173 | static enum language psymtab_language = language_unknown; | |
174 | ||
175 | /* Current BFD. */ | |
176 | ||
177 | static bfd *cur_bfd; | |
178 | ||
179 | /* How to parse debugging information for CUR_BFD. */ | |
180 | ||
181 | static const struct ecoff_debug_swap *debug_swap; | |
182 | ||
183 | /* Pointers to debugging information for CUR_BFD. */ | |
184 | ||
185 | static struct ecoff_debug_info *debug_info; | |
186 | ||
187 | /* Pointer to current file decriptor record, and its index */ | |
188 | ||
189 | static FDR *cur_fdr; | |
190 | static int cur_fd; | |
191 | ||
192 | /* Index of current symbol */ | |
193 | ||
194 | static int cur_sdx; | |
195 | ||
196 | /* Note how much "debuggable" this image is. We would like | |
197 | to see at least one FDR with full symbols */ | |
198 | ||
199 | static int max_gdbinfo; | |
200 | static int max_glevel; | |
201 | ||
202 | /* When examining .o files, report on undefined symbols */ | |
203 | ||
204 | static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs; | |
205 | ||
206 | /* Pseudo symbol to use when putting stabs into the symbol table. */ | |
207 | ||
208 | static char stabs_symbol[] = STABS_SYMBOL; | |
209 | ||
c906108c SS |
210 | /* Nonzero if we have seen ecoff debugging info for a file. */ |
211 | ||
212 | static int found_ecoff_debugging_info; | |
213 | ||
214 | /* Forward declarations */ | |
215 | ||
12b9c64f AO |
216 | static int upgrade_type (int, struct type **, int, union aux_ext *, |
217 | int, char *); | |
c906108c | 218 | |
a14ed312 | 219 | static void parse_partial_symbols (struct objfile *); |
c906108c | 220 | |
a14ed312 | 221 | static int has_opaque_xref (FDR *, SYMR *); |
c906108c | 222 | |
12b9c64f AO |
223 | static int cross_ref (int, union aux_ext *, struct type **, enum type_code, |
224 | char **, int, char *); | |
c906108c | 225 | |
a14ed312 | 226 | static struct symbol *new_symbol (char *); |
c906108c | 227 | |
a14ed312 | 228 | static struct type *new_type (char *); |
c906108c | 229 | |
de4f826b | 230 | enum block_type { FUNCTION_BLOCK, NON_FUNCTION_BLOCK }; |
c906108c | 231 | |
de4f826b DC |
232 | static struct block *new_block (enum block_type); |
233 | ||
234 | static struct symtab *new_symtab (char *, int, struct objfile *); | |
c906108c | 235 | |
a14ed312 | 236 | static struct linetable *new_linetable (int); |
c906108c | 237 | |
a14ed312 | 238 | static struct blockvector *new_bvect (int); |
c906108c | 239 | |
a14ed312 KB |
240 | static struct type *parse_type (int, union aux_ext *, unsigned int, int *, |
241 | int, char *); | |
c906108c | 242 | |
176620f1 | 243 | static struct symbol *mylookup_symbol (char *, struct block *, domain_enum, |
a14ed312 | 244 | enum address_class); |
c906108c | 245 | |
a14ed312 | 246 | static void sort_blocks (struct symtab *); |
c906108c | 247 | |
a14ed312 | 248 | static struct partial_symtab *new_psymtab (char *, struct objfile *); |
c906108c | 249 | |
a14ed312 | 250 | static void psymtab_to_symtab_1 (struct partial_symtab *, char *); |
c906108c | 251 | |
a14ed312 | 252 | static void add_block (struct block *, struct symtab *); |
c906108c | 253 | |
c7efd0b9 | 254 | static void add_symbol (struct symbol *, struct symtab *, struct block *); |
c906108c | 255 | |
a14ed312 | 256 | static int add_line (struct linetable *, int, CORE_ADDR, int); |
c906108c | 257 | |
a14ed312 | 258 | static struct linetable *shrink_linetable (struct linetable *); |
c906108c | 259 | |
12b9c64f AO |
260 | static void handle_psymbol_enumerators (struct objfile *, FDR *, int, |
261 | CORE_ADDR); | |
c906108c | 262 | |
a14ed312 | 263 | static char *mdebug_next_symbol_text (struct objfile *); |
c906108c | 264 | \f |
c906108c SS |
265 | /* Exported procedure: Builds a symtab from the PST partial one. |
266 | Restores the environment in effect when PST was created, delegates | |
267 | most of the work to an ancillary procedure, and sorts | |
268 | and reorders the symtab list at the end */ | |
269 | ||
270 | static void | |
fba45db2 | 271 | mdebug_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
272 | { |
273 | ||
274 | if (!pst) | |
275 | return; | |
276 | ||
277 | if (info_verbose) | |
278 | { | |
a3f17187 | 279 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
280 | gdb_flush (gdb_stdout); |
281 | } | |
282 | ||
283 | next_symbol_text_func = mdebug_next_symbol_text; | |
284 | ||
285 | psymtab_to_symtab_1 (pst, pst->filename); | |
286 | ||
287 | /* Match with global symbols. This only needs to be done once, | |
288 | after all of the symtabs and dependencies have been read in. */ | |
289 | scan_file_globals (pst->objfile); | |
290 | ||
291 | if (info_verbose) | |
a3f17187 | 292 | printf_filtered (_("done.\n")); |
c906108c SS |
293 | } |
294 | \f | |
295 | /* File-level interface functions */ | |
296 | ||
297 | /* Find a file descriptor given its index RF relative to a file CF */ | |
298 | ||
299 | static FDR * | |
fba45db2 | 300 | get_rfd (int cf, int rf) |
c906108c SS |
301 | { |
302 | FDR *fdrs; | |
52f0bd74 | 303 | FDR *f; |
c906108c SS |
304 | RFDT rfd; |
305 | ||
306 | fdrs = debug_info->fdr; | |
307 | f = fdrs + cf; | |
308 | /* Object files do not have the RFD table, all refs are absolute */ | |
309 | if (f->rfdBase == 0) | |
310 | return fdrs + rf; | |
311 | (*debug_swap->swap_rfd_in) (cur_bfd, | |
c5aa993b JM |
312 | ((char *) debug_info->external_rfd |
313 | + ((f->rfdBase + rf) | |
314 | * debug_swap->external_rfd_size)), | |
315 | &rfd); | |
c906108c SS |
316 | return fdrs + rfd; |
317 | } | |
318 | ||
319 | /* Return a safer print NAME for a file descriptor */ | |
320 | ||
321 | static char * | |
fba45db2 | 322 | fdr_name (FDR *f) |
c906108c SS |
323 | { |
324 | if (f->rss == -1) | |
325 | return "<stripped file>"; | |
326 | if (f->rss == 0) | |
327 | return "<NFY>"; | |
328 | return debug_info->ss + f->issBase + f->rss; | |
329 | } | |
330 | ||
331 | ||
332 | /* Read in and parse the symtab of the file OBJFILE. Symbols from | |
333 | different sections are relocated via the SECTION_OFFSETS. */ | |
334 | ||
335 | void | |
fba45db2 KB |
336 | mdebug_build_psymtabs (struct objfile *objfile, |
337 | const struct ecoff_debug_swap *swap, | |
338 | struct ecoff_debug_info *info) | |
c906108c SS |
339 | { |
340 | cur_bfd = objfile->obfd; | |
341 | debug_swap = swap; | |
342 | debug_info = info; | |
343 | ||
d3d55eeb EZ |
344 | stabsread_new_init (); |
345 | buildsym_new_init (); | |
346 | free_header_files (); | |
347 | init_header_files (); | |
348 | ||
c906108c SS |
349 | /* Make sure all the FDR information is swapped in. */ |
350 | if (info->fdr == (FDR *) NULL) | |
351 | { | |
352 | char *fdr_src; | |
353 | char *fdr_end; | |
354 | FDR *fdr_ptr; | |
355 | ||
8b92e4d5 | 356 | info->fdr = (FDR *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
357 | (info->symbolic_header.ifdMax |
358 | * sizeof (FDR))); | |
359 | fdr_src = info->external_fdr; | |
360 | fdr_end = (fdr_src | |
361 | + info->symbolic_header.ifdMax * swap->external_fdr_size); | |
362 | fdr_ptr = info->fdr; | |
363 | for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++) | |
364 | (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr); | |
365 | } | |
366 | ||
d4f3574e | 367 | parse_partial_symbols (objfile); |
c906108c SS |
368 | |
369 | #if 0 | |
370 | /* Check to make sure file was compiled with -g. If not, warn the | |
371 | user of this limitation. */ | |
372 | if (compare_glevel (max_glevel, GLEVEL_2) < 0) | |
373 | { | |
374 | if (max_gdbinfo == 0) | |
a3f17187 | 375 | printf_unfiltered (_("\n%s not compiled with -g, debugging support is limited.\n"), |
c5aa993b | 376 | objfile->name); |
a3f17187 | 377 | printf_unfiltered (_("You should compile with -g2 or -g3 for best debugging support.\n")); |
c906108c SS |
378 | gdb_flush (gdb_stdout); |
379 | } | |
380 | #endif | |
381 | } | |
382 | \f | |
383 | /* Local utilities */ | |
384 | ||
385 | /* Map of FDR indexes to partial symtabs */ | |
386 | ||
387 | struct pst_map | |
388 | { | |
389 | struct partial_symtab *pst; /* the psymtab proper */ | |
390 | long n_globals; /* exported globals (external symbols) */ | |
391 | long globals_offset; /* cumulative */ | |
392 | }; | |
393 | ||
394 | ||
395 | /* Utility stack, used to nest procedures and blocks properly. | |
396 | It is a doubly linked list, to avoid too many alloc/free. | |
397 | Since we might need it quite a few times it is NOT deallocated | |
398 | after use. */ | |
399 | ||
400 | static struct parse_stack | |
c5aa993b JM |
401 | { |
402 | struct parse_stack *next, *prev; | |
403 | struct symtab *cur_st; /* Current symtab. */ | |
404 | struct block *cur_block; /* Block in it. */ | |
405 | ||
406 | /* What are we parsing. stFile, or stBlock are for files and | |
407 | blocks. stProc or stStaticProc means we have seen the start of a | |
408 | procedure, but not the start of the block within in. When we see | |
409 | the start of that block, we change it to stNil, without pushing a | |
410 | new block, i.e. stNil means both a procedure and a block. */ | |
411 | ||
412 | int blocktype; | |
413 | ||
c5aa993b JM |
414 | struct type *cur_type; /* Type we parse fields for. */ |
415 | int cur_field; /* Field number in cur_type. */ | |
416 | CORE_ADDR procadr; /* Start addres of this procedure */ | |
417 | int numargs; /* Its argument count */ | |
418 | } | |
c906108c SS |
419 | |
420 | *top_stack; /* Top stack ptr */ | |
421 | ||
422 | ||
423 | /* Enter a new lexical context */ | |
424 | ||
425 | static void | |
fba45db2 | 426 | push_parse_stack (void) |
c906108c SS |
427 | { |
428 | struct parse_stack *new; | |
429 | ||
430 | /* Reuse frames if possible */ | |
431 | if (top_stack && top_stack->prev) | |
432 | new = top_stack->prev; | |
433 | else | |
434 | new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack)); | |
435 | /* Initialize new frame with previous content */ | |
436 | if (top_stack) | |
437 | { | |
aa1ee363 | 438 | struct parse_stack *prev = new->prev; |
c906108c SS |
439 | |
440 | *new = *top_stack; | |
441 | top_stack->prev = new; | |
442 | new->prev = prev; | |
443 | new->next = top_stack; | |
444 | } | |
445 | top_stack = new; | |
446 | } | |
447 | ||
448 | /* Exit a lexical context */ | |
449 | ||
450 | static void | |
fba45db2 | 451 | pop_parse_stack (void) |
c906108c SS |
452 | { |
453 | if (!top_stack) | |
454 | return; | |
455 | if (top_stack->next) | |
456 | top_stack = top_stack->next; | |
457 | } | |
458 | ||
459 | ||
460 | /* Cross-references might be to things we haven't looked at | |
461 | yet, e.g. type references. To avoid too many type | |
462 | duplications we keep a quick fixup table, an array | |
463 | of lists of references indexed by file descriptor */ | |
464 | ||
465 | struct mdebug_pending | |
466 | { | |
467 | struct mdebug_pending *next; /* link */ | |
468 | char *s; /* the unswapped symbol */ | |
469 | struct type *t; /* its partial type descriptor */ | |
470 | }; | |
471 | ||
472 | ||
473 | /* The pending information is kept for an entire object file, and used | |
0a6ddd08 AC |
474 | to be in the deprecated_sym_private field. I took it out when I |
475 | split mdebugread from mipsread, because this might not be the only | |
476 | type of symbols read from an object file. Instead, we allocate the | |
c906108c SS |
477 | pending information table when we create the partial symbols, and |
478 | we store a pointer to the single table in each psymtab. */ | |
479 | ||
480 | static struct mdebug_pending **pending_list; | |
481 | ||
482 | /* Check whether we already saw symbol SH in file FH */ | |
483 | ||
484 | static struct mdebug_pending * | |
fba45db2 | 485 | is_pending_symbol (FDR *fh, char *sh) |
c906108c SS |
486 | { |
487 | int f_idx = fh - debug_info->fdr; | |
52f0bd74 | 488 | struct mdebug_pending *p; |
c906108c SS |
489 | |
490 | /* Linear search is ok, list is typically no more than 10 deep */ | |
491 | for (p = pending_list[f_idx]; p; p = p->next) | |
492 | if (p->s == sh) | |
493 | break; | |
494 | return p; | |
495 | } | |
496 | ||
497 | /* Add a new symbol SH of type T */ | |
498 | ||
499 | static void | |
fba45db2 | 500 | add_pending (FDR *fh, char *sh, struct type *t) |
c906108c SS |
501 | { |
502 | int f_idx = fh - debug_info->fdr; | |
503 | struct mdebug_pending *p = is_pending_symbol (fh, sh); | |
504 | ||
505 | /* Make sure we do not make duplicates */ | |
506 | if (!p) | |
507 | { | |
508 | p = ((struct mdebug_pending *) | |
8b92e4d5 | 509 | obstack_alloc (¤t_objfile->objfile_obstack, |
c906108c SS |
510 | sizeof (struct mdebug_pending))); |
511 | p->s = sh; | |
512 | p->t = t; | |
513 | p->next = pending_list[f_idx]; | |
514 | pending_list[f_idx] = p; | |
515 | } | |
516 | } | |
517 | \f | |
518 | ||
519 | /* Parsing Routines proper. */ | |
520 | ||
521 | /* Parse a single symbol. Mostly just make up a GDB symbol for it. | |
522 | For blocks, procedures and types we open a new lexical context. | |
523 | This is basically just a big switch on the symbol's type. Argument | |
524 | AX is the base pointer of aux symbols for this file (fh->iauxBase). | |
525 | EXT_SH points to the unswapped symbol, which is needed for struct, | |
526 | union, etc., types; it is NULL for an EXTR. BIGEND says whether | |
527 | aux symbols are big-endian or little-endian. Return count of | |
528 | SYMR's handled (normally one). */ | |
529 | ||
768a979c UW |
530 | static int |
531 | mdebug_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
532 | { | |
533 | return gdbarch_ecoff_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
534 | } | |
535 | ||
536 | static const struct symbol_register_ops mdebug_register_funcs = { | |
537 | mdebug_reg_to_regnum | |
538 | }; | |
539 | ||
c906108c | 540 | static int |
fba45db2 KB |
541 | parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend, |
542 | struct section_offsets *section_offsets, struct objfile *objfile) | |
c906108c | 543 | { |
5e2b427d | 544 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 545 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; |
12b9c64f | 546 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c SS |
547 | char *name; |
548 | struct symbol *s; | |
549 | struct block *b; | |
550 | struct mdebug_pending *pend; | |
551 | struct type *t; | |
552 | struct field *f; | |
553 | int count = 1; | |
554 | enum address_class class; | |
555 | TIR tir; | |
556 | long svalue = sh->value; | |
557 | int bitsize; | |
558 | ||
559 | if (ext_sh == (char *) NULL) | |
560 | name = debug_info->ssext + sh->iss; | |
561 | else | |
562 | name = debug_info->ss + cur_fdr->issBase + sh->iss; | |
563 | ||
564 | switch (sh->sc) | |
565 | { | |
566 | case scText: | |
567 | case scRConst: | |
568 | /* Do not relocate relative values. | |
c5aa993b JM |
569 | The value of a stEnd symbol is the displacement from the |
570 | corresponding start symbol value. | |
571 | The value of a stBlock symbol is the displacement from the | |
572 | procedure address. */ | |
c906108c | 573 | if (sh->st != stEnd && sh->st != stBlock) |
b8fbeb18 | 574 | sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
575 | break; |
576 | case scData: | |
577 | case scSData: | |
578 | case scRData: | |
579 | case scPData: | |
580 | case scXData: | |
b8fbeb18 | 581 | sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
582 | break; |
583 | case scBss: | |
584 | case scSBss: | |
b8fbeb18 | 585 | sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
586 | break; |
587 | } | |
588 | ||
589 | switch (sh->st) | |
590 | { | |
591 | case stNil: | |
592 | break; | |
593 | ||
594 | case stGlobal: /* external symbol, goes into global block */ | |
595 | class = LOC_STATIC; | |
596 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
597 | GLOBAL_BLOCK); | |
598 | s = new_symbol (name); | |
599 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
600 | goto data; | |
601 | ||
602 | case stStatic: /* static data, goes into current block. */ | |
603 | class = LOC_STATIC; | |
604 | b = top_stack->cur_block; | |
605 | s = new_symbol (name); | |
c5aa993b | 606 | if (SC_IS_COMMON (sh->sc)) |
c906108c SS |
607 | { |
608 | /* It is a FORTRAN common block. At least for SGI Fortran the | |
609 | address is not in the symbol; we need to fix it later in | |
610 | scan_file_globals. */ | |
3567439c | 611 | int bucket = hashname (SYMBOL_LINKAGE_NAME (s)); |
c906108c SS |
612 | SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket]; |
613 | global_sym_chain[bucket] = s; | |
614 | } | |
615 | else | |
616 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
617 | goto data; | |
618 | ||
619 | case stLocal: /* local variable, goes into current block */ | |
768a979c UW |
620 | b = top_stack->cur_block; |
621 | s = new_symbol (name); | |
622 | SYMBOL_VALUE (s) = svalue; | |
c906108c SS |
623 | if (sh->sc == scRegister) |
624 | { | |
625 | class = LOC_REGISTER; | |
768a979c | 626 | SYMBOL_REGISTER_OPS (s) = &mdebug_register_funcs; |
c906108c SS |
627 | } |
628 | else | |
629 | class = LOC_LOCAL; | |
c906108c SS |
630 | |
631 | data: /* Common code for symbols describing data */ | |
176620f1 | 632 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
c906108c | 633 | SYMBOL_CLASS (s) = class; |
c7efd0b9 | 634 | add_symbol (s, top_stack->cur_st, b); |
c906108c SS |
635 | |
636 | /* Type could be missing if file is compiled without debugging info. */ | |
c5aa993b | 637 | if (SC_IS_UNDEF (sh->sc) |
c906108c | 638 | || sh->sc == scNil || sh->index == indexNil) |
46bf5051 | 639 | SYMBOL_TYPE (s) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
640 | else |
641 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
642 | /* Value of a data symbol is its memory address */ | |
643 | break; | |
644 | ||
645 | case stParam: /* arg to procedure, goes into current block */ | |
646 | max_gdbinfo++; | |
647 | found_ecoff_debugging_info = 1; | |
648 | top_stack->numargs++; | |
649 | ||
650 | /* Special GNU C++ name. */ | |
651 | if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0) | |
652 | name = "this"; /* FIXME, not alloc'd in obstack */ | |
653 | s = new_symbol (name); | |
654 | ||
176620f1 | 655 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
2a2d4dc3 | 656 | SYMBOL_IS_ARGUMENT (s) = 1; |
c906108c SS |
657 | switch (sh->sc) |
658 | { | |
659 | case scRegister: | |
660 | /* Pass by value in register. */ | |
2a2d4dc3 | 661 | SYMBOL_CLASS (s) = LOC_REGISTER; |
768a979c | 662 | SYMBOL_REGISTER_OPS (s) = &mdebug_register_funcs; |
c906108c SS |
663 | break; |
664 | case scVar: | |
665 | /* Pass by reference on stack. */ | |
c5aa993b | 666 | SYMBOL_CLASS (s) = LOC_REF_ARG; |
c906108c SS |
667 | break; |
668 | case scVarRegister: | |
669 | /* Pass by reference in register. */ | |
c5aa993b | 670 | SYMBOL_CLASS (s) = LOC_REGPARM_ADDR; |
768a979c | 671 | SYMBOL_REGISTER_OPS (s) = &mdebug_register_funcs; |
c906108c SS |
672 | break; |
673 | default: | |
674 | /* Pass by value on stack. */ | |
c5aa993b | 675 | SYMBOL_CLASS (s) = LOC_ARG; |
c906108c SS |
676 | break; |
677 | } | |
678 | SYMBOL_VALUE (s) = svalue; | |
679 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
c7efd0b9 | 680 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
681 | break; |
682 | ||
683 | case stLabel: /* label, goes into current block */ | |
684 | s = new_symbol (name); | |
176620f1 | 685 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; /* so that it can be used */ |
c906108c SS |
686 | SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */ |
687 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
46bf5051 | 688 | SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_int; |
c7efd0b9 | 689 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
690 | break; |
691 | ||
692 | case stProc: /* Procedure, usually goes into global block */ | |
693 | case stStaticProc: /* Static procedure, goes into current block */ | |
1fb4c65b JB |
694 | /* For stProc symbol records, we need to check the storage class |
695 | as well, as only (stProc, scText) entries represent "real" | |
696 | procedures - See the Compaq document titled "Object File / | |
697 | Symbol Table Format Specification" for more information. | |
698 | If the storage class is not scText, we discard the whole block | |
699 | of symbol records for this stProc. */ | |
700 | if (sh->st == stProc && sh->sc != scText) | |
701 | { | |
702 | char *ext_tsym = ext_sh; | |
703 | int keep_counting = 1; | |
704 | SYMR tsym; | |
705 | ||
706 | while (keep_counting) | |
707 | { | |
708 | ext_tsym += external_sym_size; | |
709 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
710 | count++; | |
711 | switch (tsym.st) | |
712 | { | |
713 | case stParam: | |
714 | break; | |
715 | case stEnd: | |
716 | keep_counting = 0; | |
717 | break; | |
718 | default: | |
719 | complaint (&symfile_complaints, | |
e2e0b3e5 | 720 | _("unknown symbol type 0x%x"), sh->st); |
1fb4c65b JB |
721 | break; |
722 | } | |
723 | } | |
724 | break; | |
725 | } | |
c906108c | 726 | s = new_symbol (name); |
176620f1 | 727 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
c906108c SS |
728 | SYMBOL_CLASS (s) = LOC_BLOCK; |
729 | /* Type of the return value */ | |
c5aa993b | 730 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
46bf5051 | 731 | t = objfile_type (objfile)->builtin_int; |
c906108c SS |
732 | else |
733 | { | |
734 | t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name); | |
ee300cd4 AC |
735 | if (strcmp (name, "malloc") == 0 |
736 | && TYPE_CODE (t) == TYPE_CODE_VOID) | |
c906108c SS |
737 | { |
738 | /* I don't know why, but, at least under Alpha GNU/Linux, | |
c5aa993b JM |
739 | when linking against a malloc without debugging |
740 | symbols, its read as a function returning void---this | |
741 | is bad because it means we cannot call functions with | |
742 | string arguments interactively; i.e., "call | |
743 | printf("howdy\n")" would fail with the error message | |
744 | "program has no memory available". To avoid this, we | |
745 | patch up the type and make it void* | |
746 | instead. (davidm@azstarnet.com) | |
747 | */ | |
c906108c SS |
748 | t = make_pointer_type (t, NULL); |
749 | } | |
750 | } | |
751 | b = top_stack->cur_block; | |
752 | if (sh->st == stProc) | |
753 | { | |
754 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
755 | /* The next test should normally be true, but provides a | |
756 | hook for nested functions (which we don't want to make | |
28397f59 | 757 | global). */ |
c906108c SS |
758 | if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) |
759 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
760 | /* Irix 5 sometimes has duplicate names for the same | |
761 | function. We want to add such names up at the global | |
762 | level, not as a nested function. */ | |
763 | else if (sh->value == top_stack->procadr) | |
764 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
765 | } | |
c7efd0b9 | 766 | add_symbol (s, top_stack->cur_st, b); |
c906108c SS |
767 | |
768 | /* Make a type for the procedure itself */ | |
769 | SYMBOL_TYPE (s) = lookup_function_type (t); | |
770 | ||
1e698235 DJ |
771 | /* All functions in C++ have prototypes. For C we don't have enough |
772 | information in the debug info. */ | |
773 | if (SYMBOL_LANGUAGE (s) == language_cplus) | |
876cecd0 | 774 | TYPE_PROTOTYPED (SYMBOL_TYPE (s)) = 1; |
1e698235 | 775 | |
c906108c | 776 | /* Create and enter a new lexical context */ |
de4f826b | 777 | b = new_block (FUNCTION_BLOCK); |
c906108c SS |
778 | SYMBOL_BLOCK_VALUE (s) = b; |
779 | BLOCK_FUNCTION (b) = s; | |
780 | BLOCK_START (b) = BLOCK_END (b) = sh->value; | |
781 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
782 | add_block (b, top_stack->cur_st); | |
783 | ||
784 | /* Not if we only have partial info */ | |
c5aa993b | 785 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
786 | break; |
787 | ||
788 | push_parse_stack (); | |
789 | top_stack->cur_block = b; | |
790 | top_stack->blocktype = sh->st; | |
791 | top_stack->cur_type = SYMBOL_TYPE (s); | |
792 | top_stack->cur_field = -1; | |
793 | top_stack->procadr = sh->value; | |
794 | top_stack->numargs = 0; | |
795 | break; | |
796 | ||
797 | /* Beginning of code for structure, union, and enum definitions. | |
c5aa993b | 798 | They all share a common set of local variables, defined here. */ |
c906108c SS |
799 | { |
800 | enum type_code type_code; | |
801 | char *ext_tsym; | |
802 | int nfields; | |
803 | long max_value; | |
804 | struct field *f; | |
805 | ||
806 | case stStruct: /* Start a block defining a struct type */ | |
807 | type_code = TYPE_CODE_STRUCT; | |
808 | goto structured_common; | |
809 | ||
810 | case stUnion: /* Start a block defining a union type */ | |
811 | type_code = TYPE_CODE_UNION; | |
812 | goto structured_common; | |
813 | ||
814 | case stEnum: /* Start a block defining an enum type */ | |
815 | type_code = TYPE_CODE_ENUM; | |
816 | goto structured_common; | |
817 | ||
818 | case stBlock: /* Either a lexical block, or some type */ | |
c5aa993b | 819 | if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc)) |
c906108c SS |
820 | goto case_stBlock_code; /* Lexical block */ |
821 | ||
822 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ | |
823 | ||
824 | /* Common code for handling struct, union, enum, and/or as-yet- | |
825 | unknown-type blocks of info about structured data. `type_code' | |
826 | has been set to the proper TYPE_CODE, if we know it. */ | |
827 | structured_common: | |
828 | found_ecoff_debugging_info = 1; | |
829 | push_parse_stack (); | |
830 | top_stack->blocktype = stBlock; | |
831 | ||
832 | /* First count the number of fields and the highest value. */ | |
833 | nfields = 0; | |
834 | max_value = 0; | |
835 | for (ext_tsym = ext_sh + external_sym_size; | |
836 | ; | |
837 | ext_tsym += external_sym_size) | |
838 | { | |
839 | SYMR tsym; | |
840 | ||
841 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
842 | ||
843 | switch (tsym.st) | |
844 | { | |
845 | case stEnd: | |
f0394be6 JB |
846 | /* C++ encodes class types as structures where there the |
847 | methods are encoded as stProc. The scope of stProc | |
848 | symbols also ends with stEnd, thus creating a risk of | |
849 | taking the wrong stEnd symbol record as the end of | |
850 | the current struct, which would cause GDB to undercount | |
851 | the real number of fields in this struct. To make sure | |
852 | we really reached the right stEnd symbol record, we | |
853 | check the associated name, and match it against the | |
854 | struct name. Since method names are mangled while | |
855 | the class name is not, there is no risk of having a | |
856 | method whose name is identical to the class name | |
857 | (in particular constructor method names are different | |
858 | from the class name). There is therefore no risk that | |
7bde8967 KB |
859 | this check stops the count on the StEnd of a method. |
860 | ||
861 | Also, assume that we're really at the end when tsym.iss | |
862 | is 0 (issNull). */ | |
863 | if (tsym.iss == issNull | |
864 | || strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss, | |
865 | name) == 0) | |
f0394be6 JB |
866 | goto end_of_fields; |
867 | break; | |
c906108c SS |
868 | |
869 | case stMember: | |
870 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
871 | { |
872 | /* If the type of the member is Nil (or Void), | |
873 | without qualifiers, assume the tag is an | |
874 | enumeration. | |
875 | Alpha cc -migrate enums are recognized by a zero | |
876 | index and a zero symbol value. | |
877 | DU 4.0 cc enums are recognized by a member type of | |
878 | btEnum without qualifiers and a zero symbol value. */ | |
879 | if (tsym.index == indexNil | |
880 | || (tsym.index == 0 && sh->value == 0)) | |
881 | type_code = TYPE_CODE_ENUM; | |
882 | else | |
883 | { | |
884 | (*debug_swap->swap_tir_in) (bigend, | |
885 | &ax[tsym.index].a_ti, | |
886 | &tir); | |
887 | if ((tir.bt == btNil || tir.bt == btVoid | |
888 | || (tir.bt == btEnum && sh->value == 0)) | |
889 | && tir.tq0 == tqNil) | |
890 | type_code = TYPE_CODE_ENUM; | |
891 | } | |
892 | } | |
c906108c SS |
893 | nfields++; |
894 | if (tsym.value > max_value) | |
895 | max_value = tsym.value; | |
896 | break; | |
897 | ||
898 | case stBlock: | |
899 | case stUnion: | |
900 | case stEnum: | |
901 | case stStruct: | |
902 | { | |
903 | #if 0 | |
904 | /* This is a no-op; is it trying to tell us something | |
905 | we should be checking? */ | |
c5aa993b | 906 | if (tsym.sc == scVariant); /*UNIMPLEMENTED */ |
c906108c SS |
907 | #endif |
908 | if (tsym.index != 0) | |
909 | { | |
910 | /* This is something like a struct within a | |
c5aa993b JM |
911 | struct. Skip over the fields of the inner |
912 | struct. The -1 is because the for loop will | |
913 | increment ext_tsym. */ | |
c906108c SS |
914 | ext_tsym = ((char *) debug_info->external_sym |
915 | + ((cur_fdr->isymBase + tsym.index - 1) | |
916 | * external_sym_size)); | |
917 | } | |
918 | } | |
919 | break; | |
920 | ||
921 | case stTypedef: | |
922 | /* mips cc puts out a typedef for struct x if it is not yet | |
923 | defined when it encounters | |
924 | struct y { struct x *xp; }; | |
925 | Just ignore it. */ | |
926 | break; | |
927 | ||
928 | case stIndirect: | |
929 | /* Irix5 cc puts out a stIndirect for struct x if it is not | |
930 | yet defined when it encounters | |
931 | struct y { struct x *xp; }; | |
932 | Just ignore it. */ | |
933 | break; | |
934 | ||
935 | default: | |
23136709 | 936 | complaint (&symfile_complaints, |
e2e0b3e5 | 937 | _("declaration block contains unhandled symbol type %d"), |
23136709 | 938 | tsym.st); |
c906108c SS |
939 | } |
940 | } | |
941 | end_of_fields:; | |
942 | ||
943 | /* In an stBlock, there is no way to distinguish structs, | |
944 | unions, and enums at this point. This is a bug in the | |
945 | original design (that has been fixed with the recent | |
946 | addition of the stStruct, stUnion, and stEnum symbol | |
947 | types.) The way you can tell is if/when you see a variable | |
948 | or field of that type. In that case the variable's type | |
949 | (in the AUX table) says if the type is struct, union, or | |
950 | enum, and points back to the stBlock here. So you can | |
951 | patch the tag kind up later - but only if there actually is | |
952 | a variable or field of that type. | |
953 | ||
954 | So until we know for sure, we will guess at this point. | |
955 | The heuristic is: | |
956 | If the first member has index==indexNil or a void type, | |
957 | assume we have an enumeration. | |
958 | Otherwise, if there is more than one member, and all | |
959 | the members have offset 0, assume we have a union. | |
960 | Otherwise, assume we have a struct. | |
961 | ||
962 | The heuristic could guess wrong in the case of of an | |
963 | enumeration with no members or a union with one (or zero) | |
964 | members, or when all except the last field of a struct have | |
965 | width zero. These are uncommon and/or illegal situations, | |
966 | and in any case guessing wrong probably doesn't matter | |
967 | much. | |
968 | ||
969 | But if we later do find out we were wrong, we fixup the tag | |
970 | kind. Members of an enumeration must be handled | |
971 | differently from struct/union fields, and that is harder to | |
972 | patch up, but luckily we shouldn't need to. (If there are | |
973 | any enumeration members, we can tell for sure it's an enum | |
974 | here.) */ | |
975 | ||
976 | if (type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
977 | { |
978 | if (nfields > 1 && max_value == 0) | |
979 | type_code = TYPE_CODE_UNION; | |
980 | else | |
981 | type_code = TYPE_CODE_STRUCT; | |
982 | } | |
c906108c SS |
983 | |
984 | /* Create a new type or use the pending type. */ | |
985 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
986 | if (pend == (struct mdebug_pending *) NULL) | |
987 | { | |
988 | t = new_type (NULL); | |
989 | add_pending (cur_fdr, ext_sh, t); | |
990 | } | |
991 | else | |
992 | t = pend->t; | |
993 | ||
994 | /* Do not set the tag name if it is a compiler generated tag name | |
995 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. | |
996 | Alpha cc puts out an sh->iss of zero for those. */ | |
997 | if (sh->iss == 0 || name[0] == '.' || name[0] == '\0') | |
998 | TYPE_TAG_NAME (t) = NULL; | |
999 | else | |
4a146b47 | 1000 | TYPE_TAG_NAME (t) = obconcat (¤t_objfile->objfile_obstack, |
c906108c SS |
1001 | "", "", name); |
1002 | ||
1003 | TYPE_CODE (t) = type_code; | |
1004 | TYPE_LENGTH (t) = sh->value; | |
1005 | TYPE_NFIELDS (t) = nfields; | |
1006 | TYPE_FIELDS (t) = f = ((struct field *) | |
1007 | TYPE_ALLOC (t, | |
1008 | nfields * sizeof (struct field))); | |
1009 | ||
1010 | if (type_code == TYPE_CODE_ENUM) | |
1011 | { | |
1012 | int unsigned_enum = 1; | |
1013 | ||
1014 | /* This is a non-empty enum. */ | |
1015 | ||
1016 | /* DEC c89 has the number of enumerators in the sh.value field, | |
1017 | not the type length, so we have to compensate for that | |
1018 | incompatibility quirk. | |
1019 | This might do the wrong thing for an enum with one or two | |
1020 | enumerators and gcc -gcoff -fshort-enums, but these cases | |
1021 | are hopefully rare enough. | |
1022 | Alpha cc -migrate has a sh.value field of zero, we adjust | |
1023 | that too. */ | |
1024 | if (TYPE_LENGTH (t) == TYPE_NFIELDS (t) | |
1025 | || TYPE_LENGTH (t) == 0) | |
5e2b427d | 1026 | TYPE_LENGTH (t) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
c906108c SS |
1027 | for (ext_tsym = ext_sh + external_sym_size; |
1028 | ; | |
1029 | ext_tsym += external_sym_size) | |
1030 | { | |
1031 | SYMR tsym; | |
1032 | struct symbol *enum_sym; | |
1033 | ||
1034 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
1035 | ||
1036 | if (tsym.st != stMember) | |
1037 | break; | |
1038 | ||
d6a843b5 | 1039 | SET_FIELD_BITPOS (*f, tsym.value); |
c906108c SS |
1040 | FIELD_TYPE (*f) = t; |
1041 | FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss; | |
1042 | FIELD_BITSIZE (*f) = 0; | |
1043 | ||
1044 | enum_sym = ((struct symbol *) | |
4a146b47 | 1045 | obstack_alloc (¤t_objfile->objfile_obstack, |
c906108c | 1046 | sizeof (struct symbol))); |
12b9c64f | 1047 | memset (enum_sym, 0, sizeof (struct symbol)); |
3567439c DJ |
1048 | SYMBOL_SET_LINKAGE_NAME |
1049 | (enum_sym, obsavestring (f->name, strlen (f->name), | |
1050 | ¤t_objfile->objfile_obstack)); | |
c906108c SS |
1051 | SYMBOL_CLASS (enum_sym) = LOC_CONST; |
1052 | SYMBOL_TYPE (enum_sym) = t; | |
176620f1 | 1053 | SYMBOL_DOMAIN (enum_sym) = VAR_DOMAIN; |
c906108c SS |
1054 | SYMBOL_VALUE (enum_sym) = tsym.value; |
1055 | if (SYMBOL_VALUE (enum_sym) < 0) | |
1056 | unsigned_enum = 0; | |
c7efd0b9 | 1057 | add_symbol (enum_sym, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1058 | |
1059 | /* Skip the stMembers that we've handled. */ | |
1060 | count++; | |
1061 | f++; | |
1062 | } | |
1063 | if (unsigned_enum) | |
876cecd0 | 1064 | TYPE_UNSIGNED (t) = 1; |
c906108c SS |
1065 | } |
1066 | /* make this the current type */ | |
1067 | top_stack->cur_type = t; | |
1068 | top_stack->cur_field = 0; | |
1069 | ||
1070 | /* Do not create a symbol for alpha cc unnamed structs. */ | |
1071 | if (sh->iss == 0) | |
1072 | break; | |
1073 | ||
1074 | /* gcc puts out an empty struct for an opaque struct definitions, | |
1075 | do not create a symbol for it either. */ | |
1076 | if (TYPE_NFIELDS (t) == 0) | |
1077 | { | |
876cecd0 | 1078 | TYPE_STUB (t) = 1; |
c906108c SS |
1079 | break; |
1080 | } | |
1081 | ||
1082 | s = new_symbol (name); | |
176620f1 | 1083 | SYMBOL_DOMAIN (s) = STRUCT_DOMAIN; |
c906108c SS |
1084 | SYMBOL_CLASS (s) = LOC_TYPEDEF; |
1085 | SYMBOL_VALUE (s) = 0; | |
1086 | SYMBOL_TYPE (s) = t; | |
c7efd0b9 | 1087 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1088 | break; |
1089 | ||
1090 | /* End of local variables shared by struct, union, enum, and | |
1091 | block (as yet unknown struct/union/enum) processing. */ | |
1092 | } | |
1093 | ||
1094 | case_stBlock_code: | |
1095 | found_ecoff_debugging_info = 1; | |
1096 | /* beginnning of (code) block. Value of symbol | |
c5aa993b | 1097 | is the displacement from procedure start */ |
c906108c SS |
1098 | push_parse_stack (); |
1099 | ||
1100 | /* Do not start a new block if this is the outermost block of a | |
c5aa993b JM |
1101 | procedure. This allows the LOC_BLOCK symbol to point to the |
1102 | block with the local variables, so funcname::var works. */ | |
c906108c SS |
1103 | if (top_stack->blocktype == stProc |
1104 | || top_stack->blocktype == stStaticProc) | |
1105 | { | |
1106 | top_stack->blocktype = stNil; | |
1107 | break; | |
1108 | } | |
1109 | ||
1110 | top_stack->blocktype = stBlock; | |
de4f826b | 1111 | b = new_block (NON_FUNCTION_BLOCK); |
c906108c SS |
1112 | BLOCK_START (b) = sh->value + top_stack->procadr; |
1113 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1114 | top_stack->cur_block = b; | |
1115 | add_block (b, top_stack->cur_st); | |
1116 | break; | |
1117 | ||
1118 | case stEnd: /* end (of anything) */ | |
c5aa993b | 1119 | if (sh->sc == scInfo || SC_IS_COMMON (sh->sc)) |
c906108c SS |
1120 | { |
1121 | /* Finished with type */ | |
1122 | top_stack->cur_type = 0; | |
1123 | } | |
1124 | else if (sh->sc == scText && | |
1125 | (top_stack->blocktype == stProc || | |
1126 | top_stack->blocktype == stStaticProc)) | |
1127 | { | |
1128 | /* Finished with procedure */ | |
1129 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
f92761ec | 1130 | struct mdebug_extra_func_info *e; |
de4f826b | 1131 | struct block *b = top_stack->cur_block; |
c906108c SS |
1132 | struct type *ftype = top_stack->cur_type; |
1133 | int i; | |
1134 | ||
1135 | BLOCK_END (top_stack->cur_block) += sh->value; /* size */ | |
1136 | ||
1137 | /* Make up special symbol to contain procedure specific info */ | |
f92761ec | 1138 | s = new_symbol (MDEBUG_EFI_SYMBOL_NAME); |
176620f1 | 1139 | SYMBOL_DOMAIN (s) = LABEL_DOMAIN; |
c906108c | 1140 | SYMBOL_CLASS (s) = LOC_CONST; |
46bf5051 | 1141 | SYMBOL_TYPE (s) = objfile_type (current_objfile)->builtin_void; |
f92761ec | 1142 | e = ((struct mdebug_extra_func_info *) |
4a146b47 | 1143 | obstack_alloc (¤t_objfile->objfile_obstack, |
f92761ec AC |
1144 | sizeof (struct mdebug_extra_func_info))); |
1145 | memset (e, 0, sizeof (struct mdebug_extra_func_info)); | |
9918cab9 | 1146 | SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e; |
c906108c SS |
1147 | e->numargs = top_stack->numargs; |
1148 | e->pdr.framereg = -1; | |
c7efd0b9 | 1149 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c | 1150 | |
c906108c SS |
1151 | /* f77 emits proc-level with address bounds==[0,0], |
1152 | So look for such child blocks, and patch them. */ | |
1153 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
1154 | { | |
1155 | struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i); | |
1156 | if (BLOCK_SUPERBLOCK (b_bad) == b | |
1157 | && BLOCK_START (b_bad) == top_stack->procadr | |
1158 | && BLOCK_END (b_bad) == top_stack->procadr) | |
1159 | { | |
1160 | BLOCK_START (b_bad) = BLOCK_START (b); | |
1161 | BLOCK_END (b_bad) = BLOCK_END (b); | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | if (TYPE_NFIELDS (ftype) <= 0) | |
1166 | { | |
1167 | /* No parameter type information is recorded with the function's | |
c5aa993b | 1168 | type. Set that from the type of the parameter symbols. */ |
c906108c SS |
1169 | int nparams = top_stack->numargs; |
1170 | int iparams; | |
1171 | struct symbol *sym; | |
1172 | ||
1173 | if (nparams > 0) | |
1174 | { | |
de4f826b | 1175 | struct dict_iterator iter; |
c906108c SS |
1176 | TYPE_NFIELDS (ftype) = nparams; |
1177 | TYPE_FIELDS (ftype) = (struct field *) | |
1178 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
c5aa993b | 1179 | |
de4f826b DC |
1180 | iparams = 0; |
1181 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
c906108c | 1182 | { |
de4f826b DC |
1183 | if (iparams == nparams) |
1184 | break; | |
1185 | ||
2a2d4dc3 | 1186 | if (SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1187 | { |
c906108c | 1188 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); |
8176bb6d | 1189 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 1190 | iparams++; |
c906108c SS |
1191 | } |
1192 | } | |
1193 | } | |
1194 | } | |
1195 | } | |
1196 | else if (sh->sc == scText && top_stack->blocktype == stBlock) | |
1197 | { | |
1198 | /* End of (code) block. The value of the symbol is the | |
1199 | displacement from the procedure`s start address of the | |
1200 | end of this block. */ | |
1201 | BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr; | |
c906108c SS |
1202 | } |
1203 | else if (sh->sc == scText && top_stack->blocktype == stNil) | |
1204 | { | |
1205 | /* End of outermost block. Pop parse stack and ignore. The | |
1206 | following stEnd of stProc will take care of the block. */ | |
1207 | ; | |
1208 | } | |
1209 | else if (sh->sc == scText && top_stack->blocktype == stFile) | |
1210 | { | |
1211 | /* End of file. Pop parse stack and ignore. Higher | |
1212 | level code deals with this. */ | |
1213 | ; | |
1214 | } | |
1215 | else | |
23136709 | 1216 | complaint (&symfile_complaints, |
e2e0b3e5 | 1217 | _("stEnd with storage class %d not handled"), sh->sc); |
c906108c SS |
1218 | |
1219 | pop_parse_stack (); /* restore previous lexical context */ | |
1220 | break; | |
1221 | ||
1222 | case stMember: /* member of struct or union */ | |
1223 | f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++]; | |
1224 | FIELD_NAME (*f) = name; | |
d6a843b5 | 1225 | SET_FIELD_BITPOS (*f, sh->value); |
c906108c SS |
1226 | bitsize = 0; |
1227 | FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name); | |
1228 | FIELD_BITSIZE (*f) = bitsize; | |
1229 | break; | |
1230 | ||
1231 | case stIndirect: /* forward declaration on Irix5 */ | |
1232 | /* Forward declarations from Irix5 cc are handled by cross_ref, | |
c5aa993b | 1233 | skip them. */ |
c906108c SS |
1234 | break; |
1235 | ||
1236 | case stTypedef: /* type definition */ | |
1237 | found_ecoff_debugging_info = 1; | |
1238 | ||
1239 | /* Typedefs for forward declarations and opaque structs from alpha cc | |
c5aa993b | 1240 | are handled by cross_ref, skip them. */ |
c906108c SS |
1241 | if (sh->iss == 0) |
1242 | break; | |
1243 | ||
1244 | /* Parse the type or use the pending type. */ | |
1245 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1246 | if (pend == (struct mdebug_pending *) NULL) | |
1247 | { | |
c5aa993b | 1248 | t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name); |
c906108c SS |
1249 | add_pending (cur_fdr, ext_sh, t); |
1250 | } | |
1251 | else | |
1252 | t = pend->t; | |
1253 | ||
1254 | /* mips cc puts out a typedef with the name of the struct for forward | |
c5aa993b JM |
1255 | declarations. These should not go into the symbol table and |
1256 | TYPE_NAME should not be set for them. | |
1257 | They can't be distinguished from an intentional typedef to | |
1258 | the same name however: | |
1259 | x.h: | |
1260 | struct x { int ix; int jx; }; | |
1261 | struct xx; | |
1262 | x.c: | |
1263 | typedef struct x x; | |
1264 | struct xx {int ixx; int jxx; }; | |
1265 | generates a cross referencing stTypedef for x and xx. | |
1266 | The user visible effect of this is that the type of a pointer | |
1267 | to struct foo sometimes is given as `foo *' instead of `struct foo *'. | |
1268 | The problem is fixed with alpha cc and Irix5 cc. */ | |
c906108c SS |
1269 | |
1270 | /* However if the typedef cross references to an opaque aggregate, it | |
c5aa993b | 1271 | is safe to omit it from the symbol table. */ |
c906108c SS |
1272 | |
1273 | if (has_opaque_xref (cur_fdr, sh)) | |
1274 | break; | |
1275 | s = new_symbol (name); | |
176620f1 | 1276 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
c906108c SS |
1277 | SYMBOL_CLASS (s) = LOC_TYPEDEF; |
1278 | SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block; | |
1279 | SYMBOL_TYPE (s) = t; | |
c7efd0b9 | 1280 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1281 | |
1282 | /* Incomplete definitions of structs should not get a name. */ | |
1283 | if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL | |
1284 | && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0 | |
c5aa993b | 1285 | || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT |
c906108c SS |
1286 | && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION))) |
1287 | { | |
1288 | if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR | |
1289 | || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC) | |
1290 | { | |
1291 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1292 | foo" or "function returning foo", we better not set |
1293 | the TYPE_NAME. If the program contains "typedef char | |
1294 | *caddr_t;", we don't want all variables of type char | |
1295 | * to print as caddr_t. This is not just a | |
1296 | consequence of GDB's type management; CC and GCC (at | |
1297 | least through version 2.4) both output variables of | |
1298 | either type char * or caddr_t with the type | |
1299 | refering to the stTypedef symbol for caddr_t. If a future | |
1300 | compiler cleans this up it GDB is not ready for it | |
1301 | yet, but if it becomes ready we somehow need to | |
1302 | disable this check (without breaking the PCC/GCC2.4 | |
1303 | case). | |
1304 | ||
1305 | Sigh. | |
1306 | ||
1307 | Fortunately, this check seems not to be necessary | |
1308 | for anything except pointers or functions. */ | |
c906108c SS |
1309 | } |
1310 | else | |
3567439c | 1311 | TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_LINKAGE_NAME (s); |
c906108c SS |
1312 | } |
1313 | break; | |
1314 | ||
1315 | case stFile: /* file name */ | |
1316 | push_parse_stack (); | |
1317 | top_stack->blocktype = sh->st; | |
1318 | break; | |
1319 | ||
1320 | /* I`ve never seen these for C */ | |
1321 | case stRegReloc: | |
1322 | break; /* register relocation */ | |
1323 | case stForward: | |
1324 | break; /* forwarding address */ | |
1325 | case stConstant: | |
1326 | break; /* constant */ | |
1327 | default: | |
e2e0b3e5 | 1328 | complaint (&symfile_complaints, _("unknown symbol type 0x%x"), sh->st); |
c906108c SS |
1329 | break; |
1330 | } | |
1331 | ||
1332 | return count; | |
1333 | } | |
1334 | ||
0a9d309a UW |
1335 | /* Basic types. */ |
1336 | ||
1337 | static const struct objfile_data *basic_type_data; | |
1338 | ||
1339 | static struct type * | |
1340 | basic_type (int bt, struct objfile *objfile) | |
1341 | { | |
1342 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
1343 | struct type **map_bt = objfile_data (objfile, basic_type_data); | |
1344 | struct type *tp; | |
1345 | ||
1346 | if (bt >= btMax) | |
1347 | return NULL; | |
1348 | ||
1349 | if (!map_bt) | |
1350 | { | |
1351 | map_bt = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
1352 | btMax, struct type *); | |
1353 | set_objfile_data (objfile, basic_type_data, map_bt); | |
1354 | } | |
1355 | ||
1356 | if (map_bt[bt]) | |
1357 | return map_bt[bt]; | |
1358 | ||
1359 | switch (bt) | |
1360 | { | |
1361 | case btNil: | |
46bf5051 | 1362 | tp = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1363 | break; |
1364 | ||
1365 | case btAdr: | |
1366 | tp = init_type (TYPE_CODE_PTR, 4, TYPE_FLAG_UNSIGNED, | |
1367 | "adr_32", objfile); | |
46bf5051 | 1368 | TYPE_TARGET_TYPE (tp) = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1369 | break; |
1370 | ||
1371 | case btChar: | |
1372 | tp = init_type (TYPE_CODE_INT, 1, 0, | |
1373 | "char", objfile); | |
1374 | break; | |
1375 | ||
1376 | case btUChar: | |
1377 | tp = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
1378 | "unsigned char", objfile); | |
1379 | break; | |
1380 | ||
1381 | case btShort: | |
1382 | tp = init_type (TYPE_CODE_INT, 2, 0, | |
1383 | "short", objfile); | |
1384 | break; | |
1385 | ||
1386 | case btUShort: | |
1387 | tp = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
1388 | "unsigned short", objfile); | |
1389 | break; | |
1390 | ||
1391 | case btInt: | |
1392 | tp = init_type (TYPE_CODE_INT, 4, 0, | |
1393 | "int", objfile); | |
1394 | break; | |
1395 | ||
1396 | case btUInt: | |
1397 | tp = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1398 | "unsigned int", objfile); | |
1399 | break; | |
1400 | ||
1401 | case btLong: | |
1402 | tp = init_type (TYPE_CODE_INT, 4, 0, | |
1403 | "long", objfile); | |
1404 | break; | |
1405 | ||
1406 | case btULong: | |
1407 | tp = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1408 | "unsigned long", objfile); | |
1409 | break; | |
1410 | ||
1411 | case btFloat: | |
1412 | tp = init_type (TYPE_CODE_FLT, | |
1413 | gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1414 | "float", objfile); | |
1415 | break; | |
1416 | ||
1417 | case btDouble: | |
1418 | tp = init_type (TYPE_CODE_FLT, | |
1419 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1420 | "double", objfile); | |
1421 | break; | |
1422 | ||
1423 | case btComplex: | |
1424 | tp = init_type (TYPE_CODE_COMPLEX, | |
1425 | 2 * gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1426 | "complex", objfile); | |
1427 | TYPE_TARGET_TYPE (tp) = basic_type (btFloat, objfile); | |
1428 | break; | |
1429 | ||
1430 | case btDComplex: | |
1431 | tp = init_type (TYPE_CODE_COMPLEX, | |
1432 | 2 * gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1433 | "double complex", objfile); | |
1434 | TYPE_TARGET_TYPE (tp) = basic_type (btDouble, objfile); | |
1435 | break; | |
1436 | ||
1437 | case btFixedDec: | |
1438 | /* We use TYPE_CODE_INT to print these as integers. Does this do any | |
1439 | good? Would we be better off with TYPE_CODE_ERROR? Should | |
1440 | TYPE_CODE_ERROR print things in hex if it knows the size? */ | |
1441 | tp = init_type (TYPE_CODE_INT, | |
1442 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1443 | "fixed decimal", objfile); | |
1444 | break; | |
1445 | ||
1446 | case btFloatDec: | |
1447 | tp = init_type (TYPE_CODE_ERROR, | |
1448 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1449 | "floating decimal", objfile); | |
1450 | break; | |
1451 | ||
1452 | case btString: | |
1453 | /* Is a "string" the way btString means it the same as TYPE_CODE_STRING? | |
1454 | FIXME. */ | |
1455 | tp = init_type (TYPE_CODE_STRING, 1, 0, | |
1456 | "string", objfile); | |
1457 | break; | |
1458 | ||
1459 | case btVoid: | |
46bf5051 | 1460 | tp = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1461 | break; |
1462 | ||
1463 | case btLong64: | |
1464 | tp = init_type (TYPE_CODE_INT, 8, 0, | |
1465 | "long", objfile); | |
1466 | break; | |
1467 | ||
1468 | case btULong64: | |
1469 | tp = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
1470 | "unsigned long", objfile); | |
1471 | break; | |
1472 | ||
1473 | case btLongLong64: | |
1474 | tp = init_type (TYPE_CODE_INT, 8, 0, | |
1475 | "long long", objfile); | |
1476 | break; | |
1477 | ||
1478 | case btULongLong64: | |
1479 | tp = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
1480 | "unsigned long long", objfile); | |
1481 | break; | |
1482 | ||
1483 | case btAdr64: | |
1484 | tp = init_type (TYPE_CODE_PTR, 8, TYPE_FLAG_UNSIGNED, | |
1485 | "adr_64", objfile); | |
46bf5051 | 1486 | TYPE_TARGET_TYPE (tp) = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1487 | break; |
1488 | ||
1489 | case btInt64: | |
1490 | tp = init_type (TYPE_CODE_INT, 8, 0, | |
1491 | "int", objfile); | |
1492 | break; | |
1493 | ||
1494 | case btUInt64: | |
1495 | tp = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
1496 | "unsigned int", objfile); | |
1497 | break; | |
1498 | ||
1499 | default: | |
1500 | tp = NULL; | |
1501 | break; | |
1502 | } | |
1503 | ||
1504 | map_bt[bt] = tp; | |
1505 | return tp; | |
1506 | } | |
1507 | ||
c906108c SS |
1508 | /* Parse the type information provided in the raw AX entries for |
1509 | the symbol SH. Return the bitfield size in BS, in case. | |
1510 | We must byte-swap the AX entries before we use them; BIGEND says whether | |
1511 | they are big-endian or little-endian (from fh->fBigendian). */ | |
1512 | ||
1513 | static struct type * | |
fba45db2 KB |
1514 | parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs, |
1515 | int bigend, char *sym_name) | |
c906108c | 1516 | { |
c906108c SS |
1517 | TIR t[1]; |
1518 | struct type *tp = 0; | |
1519 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1520 | ||
1521 | /* Handle undefined types, they have indexNil. */ | |
1522 | if (aux_index == indexNil) | |
0a9d309a | 1523 | return basic_type (btInt, current_objfile); |
c906108c SS |
1524 | |
1525 | /* Handle corrupt aux indices. */ | |
1526 | if (aux_index >= (debug_info->fdr + fd)->caux) | |
1527 | { | |
23136709 | 1528 | index_complaint (sym_name); |
0a9d309a | 1529 | return basic_type (btInt, current_objfile); |
c906108c SS |
1530 | } |
1531 | ax += aux_index; | |
1532 | ||
1533 | /* Use aux as a type information record, map its basic type. */ | |
1534 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
0a9d309a UW |
1535 | tp = basic_type (t->bt, current_objfile); |
1536 | if (tp == NULL) | |
c906108c | 1537 | { |
c906108c SS |
1538 | /* Cannot use builtin types -- build our own */ |
1539 | switch (t->bt) | |
1540 | { | |
1541 | case btStruct: | |
1542 | type_code = TYPE_CODE_STRUCT; | |
1543 | break; | |
1544 | case btUnion: | |
1545 | type_code = TYPE_CODE_UNION; | |
1546 | break; | |
1547 | case btEnum: | |
1548 | type_code = TYPE_CODE_ENUM; | |
1549 | break; | |
1550 | case btRange: | |
1551 | type_code = TYPE_CODE_RANGE; | |
1552 | break; | |
1553 | case btSet: | |
1554 | type_code = TYPE_CODE_SET; | |
1555 | break; | |
1556 | case btIndirect: | |
1557 | /* alpha cc -migrate uses this for typedefs. The true type will | |
1558 | be obtained by crossreferencing below. */ | |
1559 | type_code = TYPE_CODE_ERROR; | |
1560 | break; | |
1561 | case btTypedef: | |
1562 | /* alpha cc uses this for typedefs. The true type will be | |
1563 | obtained by crossreferencing below. */ | |
1564 | type_code = TYPE_CODE_ERROR; | |
1565 | break; | |
1566 | default: | |
23136709 | 1567 | basic_type_complaint (t->bt, sym_name); |
0a9d309a | 1568 | return basic_type (btInt, current_objfile); |
c906108c SS |
1569 | } |
1570 | } | |
1571 | ||
1572 | /* Move on to next aux */ | |
1573 | ax++; | |
1574 | ||
1575 | if (t->fBitfield) | |
1576 | { | |
1577 | int width = AUX_GET_WIDTH (bigend, ax); | |
25caa7a8 | 1578 | /* Inhibit core dumps if TIR is corrupted. */ |
c5aa993b | 1579 | if (bs == (int *) NULL) |
c906108c SS |
1580 | { |
1581 | /* Alpha cc -migrate encodes char and unsigned char types | |
1582 | as short and unsigned short types with a field width of 8. | |
1583 | Enum types also have a field width which we ignore for now. */ | |
1584 | if (t->bt == btShort && width == 8) | |
0a9d309a | 1585 | tp = basic_type (btChar, current_objfile); |
c906108c | 1586 | else if (t->bt == btUShort && width == 8) |
0a9d309a | 1587 | tp = basic_type (btUChar, current_objfile); |
c906108c SS |
1588 | else if (t->bt == btEnum) |
1589 | ; | |
1590 | else | |
e2e0b3e5 | 1591 | complaint (&symfile_complaints, _("can't handle TIR fBitfield for %s"), |
23136709 | 1592 | sym_name); |
c906108c SS |
1593 | } |
1594 | else | |
c5aa993b | 1595 | *bs = width; |
c906108c SS |
1596 | ax++; |
1597 | } | |
1598 | ||
1599 | /* A btIndirect entry cross references to an aux entry containing | |
1600 | the type. */ | |
1601 | if (t->bt == btIndirect) | |
1602 | { | |
1603 | RNDXR rn[1]; | |
1604 | int rf; | |
1605 | FDR *xref_fh; | |
1606 | int xref_fd; | |
1607 | ||
1608 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
1609 | ax++; | |
1610 | if (rn->rfd == 0xfff) | |
1611 | { | |
1612 | rf = AUX_GET_ISYM (bigend, ax); | |
1613 | ax++; | |
1614 | } | |
1615 | else | |
1616 | rf = rn->rfd; | |
1617 | ||
1618 | if (rf == -1) | |
1619 | { | |
23136709 | 1620 | complaint (&symfile_complaints, |
e2e0b3e5 | 1621 | _("unable to cross ref btIndirect for %s"), sym_name); |
0a9d309a | 1622 | return basic_type (btInt, current_objfile); |
c906108c SS |
1623 | } |
1624 | xref_fh = get_rfd (fd, rf); | |
1625 | xref_fd = xref_fh - debug_info->fdr; | |
1626 | tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase, | |
c5aa993b | 1627 | rn->index, (int *) NULL, xref_fh->fBigendian, sym_name); |
c906108c SS |
1628 | } |
1629 | ||
1630 | /* All these types really point to some (common) MIPS type | |
1631 | definition, and only the type-qualifiers fully identify | |
1632 | them. We'll make the same effort at sharing. */ | |
1633 | if (t->bt == btStruct || | |
1634 | t->bt == btUnion || | |
1635 | t->bt == btEnum || | |
1636 | ||
c5aa993b JM |
1637 | /* btSet (I think) implies that the name is a tag name, not a typedef |
1638 | name. This apparently is a MIPS extension for C sets. */ | |
c906108c SS |
1639 | t->bt == btSet) |
1640 | { | |
1641 | char *name; | |
1642 | ||
1643 | /* Try to cross reference this type, build new type on failure. */ | |
1644 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1645 | if (tp == (struct type *) NULL) | |
1646 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
1647 | ||
1648 | /* DEC c89 produces cross references to qualified aggregate types, | |
c5aa993b | 1649 | dereference them. */ |
c906108c SS |
1650 | while (TYPE_CODE (tp) == TYPE_CODE_PTR |
1651 | || TYPE_CODE (tp) == TYPE_CODE_ARRAY) | |
0004e5a2 | 1652 | tp = TYPE_TARGET_TYPE (tp); |
c906108c SS |
1653 | |
1654 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1655 | Any type may be returned from cross_ref if file indirect entries |
1656 | are corrupted. */ | |
c906108c SS |
1657 | if (TYPE_CODE (tp) != TYPE_CODE_STRUCT |
1658 | && TYPE_CODE (tp) != TYPE_CODE_UNION | |
1659 | && TYPE_CODE (tp) != TYPE_CODE_ENUM) | |
1660 | { | |
23136709 | 1661 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1662 | } |
1663 | else | |
1664 | { | |
1665 | ||
1666 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
1667 | exception is if we guessed wrong re struct/union/enum. | |
1668 | But for struct vs. union a wrong guess is harmless, so | |
1669 | don't complain(). */ | |
1670 | if ((TYPE_CODE (tp) == TYPE_CODE_ENUM | |
1671 | && type_code != TYPE_CODE_ENUM) | |
1672 | || (TYPE_CODE (tp) != TYPE_CODE_ENUM | |
1673 | && type_code == TYPE_CODE_ENUM)) | |
1674 | { | |
23136709 | 1675 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1676 | } |
1677 | ||
1678 | if (TYPE_CODE (tp) != type_code) | |
1679 | { | |
1680 | TYPE_CODE (tp) = type_code; | |
1681 | } | |
1682 | ||
1683 | /* Do not set the tag name if it is a compiler generated tag name | |
c5aa993b | 1684 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ |
c906108c SS |
1685 | if (name[0] == '.' || name[0] == '\0') |
1686 | TYPE_TAG_NAME (tp) = NULL; | |
1687 | else if (TYPE_TAG_NAME (tp) == NULL | |
6314a349 | 1688 | || strcmp (TYPE_TAG_NAME (tp), name) != 0) |
c906108c | 1689 | TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name), |
b99607ea | 1690 | ¤t_objfile->objfile_obstack); |
c906108c SS |
1691 | } |
1692 | } | |
1693 | ||
1694 | /* All these types really point to some (common) MIPS type | |
1695 | definition, and only the type-qualifiers fully identify | |
1696 | them. We'll make the same effort at sharing. | |
1697 | FIXME: We are not doing any guessing on range types. */ | |
1698 | if (t->bt == btRange) | |
1699 | { | |
1700 | char *name; | |
1701 | ||
1702 | /* Try to cross reference this type, build new type on failure. */ | |
1703 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1704 | if (tp == (struct type *) NULL) | |
1705 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
1706 | ||
1707 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1708 | Any type may be returned from cross_ref if file indirect entries |
1709 | are corrupted. */ | |
c906108c SS |
1710 | if (TYPE_CODE (tp) != TYPE_CODE_RANGE) |
1711 | { | |
23136709 | 1712 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1713 | } |
1714 | else | |
1715 | { | |
1716 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
1717 | exception is if we guessed wrong re struct/union/enum. */ | |
1718 | if (TYPE_CODE (tp) != type_code) | |
1719 | { | |
23136709 | 1720 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1721 | TYPE_CODE (tp) = type_code; |
1722 | } | |
ee300cd4 AC |
1723 | if (TYPE_NAME (tp) == NULL |
1724 | || strcmp (TYPE_NAME (tp), name) != 0) | |
c906108c | 1725 | TYPE_NAME (tp) = obsavestring (name, strlen (name), |
b99607ea | 1726 | ¤t_objfile->objfile_obstack); |
c906108c SS |
1727 | } |
1728 | } | |
1729 | if (t->bt == btTypedef) | |
1730 | { | |
1731 | char *name; | |
1732 | ||
1733 | /* Try to cross reference this type, it should succeed. */ | |
1734 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1735 | if (tp == (struct type *) NULL) | |
1736 | { | |
23136709 | 1737 | complaint (&symfile_complaints, |
e2e0b3e5 | 1738 | _("unable to cross ref btTypedef for %s"), sym_name); |
0a9d309a | 1739 | tp = basic_type (btInt, current_objfile); |
c906108c SS |
1740 | } |
1741 | } | |
1742 | ||
1743 | /* Deal with range types */ | |
1744 | if (t->bt == btRange) | |
1745 | { | |
43bbcdc2 PH |
1746 | TYPE_NFIELDS (tp) = 0; |
1747 | TYPE_RANGE_DATA (tp) = ((struct range_bounds *) | |
1748 | TYPE_ZALLOC (tp, sizeof (struct range_bounds))); | |
262452ec | 1749 | TYPE_LOW_BOUND (tp) = AUX_GET_DNLOW (bigend, ax); |
c906108c | 1750 | ax++; |
262452ec | 1751 | TYPE_HIGH_BOUND (tp) = AUX_GET_DNHIGH (bigend, ax); |
c906108c SS |
1752 | ax++; |
1753 | } | |
1754 | ||
1755 | /* Parse all the type qualifiers now. If there are more | |
1756 | than 6 the game will continue in the next aux */ | |
1757 | ||
1758 | while (1) | |
1759 | { | |
1760 | #define PARSE_TQ(tq) \ | |
1761 | if (t->tq != tqNil) \ | |
1762 | ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \ | |
1763 | else \ | |
1764 | break; | |
1765 | ||
1766 | PARSE_TQ (tq0); | |
1767 | PARSE_TQ (tq1); | |
1768 | PARSE_TQ (tq2); | |
1769 | PARSE_TQ (tq3); | |
1770 | PARSE_TQ (tq4); | |
1771 | PARSE_TQ (tq5); | |
1772 | #undef PARSE_TQ | |
1773 | ||
1774 | /* mips cc 2.x and gcc never put out continued aux entries. */ | |
1775 | if (!t->continued) | |
1776 | break; | |
1777 | ||
1778 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1779 | ax++; | |
1780 | } | |
1781 | ||
1782 | /* Complain for illegal continuations due to corrupt aux entries. */ | |
1783 | if (t->continued) | |
e2e0b3e5 | 1784 | complaint (&symfile_complaints, _("illegal TIR continued for %s"), sym_name); |
c5aa993b | 1785 | |
c906108c SS |
1786 | return tp; |
1787 | } | |
1788 | ||
1789 | /* Make up a complex type from a basic one. Type is passed by | |
1790 | reference in TPP and side-effected as necessary. The type | |
1791 | qualifier TQ says how to handle the aux symbols at AX for | |
1792 | the symbol SX we are currently analyzing. BIGEND says whether | |
1793 | aux symbols are big-endian or little-endian. | |
1794 | Returns the number of aux symbols we parsed. */ | |
1795 | ||
1796 | static int | |
fba45db2 KB |
1797 | upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend, |
1798 | char *sym_name) | |
c906108c SS |
1799 | { |
1800 | int off; | |
1801 | struct type *t; | |
1802 | ||
1803 | /* Used in array processing */ | |
1804 | int rf, id; | |
1805 | FDR *fh; | |
1806 | struct type *range; | |
1807 | struct type *indx; | |
1808 | int lower, upper; | |
1809 | RNDXR rndx; | |
1810 | ||
1811 | switch (tq) | |
1812 | { | |
1813 | case tqPtr: | |
1814 | t = lookup_pointer_type (*tpp); | |
1815 | *tpp = t; | |
1816 | return 0; | |
1817 | ||
1818 | case tqProc: | |
1819 | t = lookup_function_type (*tpp); | |
1820 | *tpp = t; | |
1821 | return 0; | |
1822 | ||
1823 | case tqArray: | |
1824 | off = 0; | |
1825 | ||
1826 | /* Determine and record the domain type (type of index) */ | |
1827 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx); | |
1828 | id = rndx.index; | |
1829 | rf = rndx.rfd; | |
1830 | if (rf == 0xfff) | |
1831 | { | |
1832 | ax++; | |
1833 | rf = AUX_GET_ISYM (bigend, ax); | |
1834 | off++; | |
1835 | } | |
1836 | fh = get_rfd (fd, rf); | |
1837 | ||
1838 | indx = parse_type (fh - debug_info->fdr, | |
1839 | debug_info->external_aux + fh->iauxBase, | |
1840 | id, (int *) NULL, bigend, sym_name); | |
1841 | ||
1842 | /* The bounds type should be an integer type, but might be anything | |
c5aa993b | 1843 | else due to corrupt aux entries. */ |
c906108c SS |
1844 | if (TYPE_CODE (indx) != TYPE_CODE_INT) |
1845 | { | |
23136709 | 1846 | complaint (&symfile_complaints, |
e2e0b3e5 | 1847 | _("illegal array index type for %s, assuming int"), sym_name); |
46bf5051 | 1848 | indx = objfile_type (current_objfile)->builtin_int; |
c906108c SS |
1849 | } |
1850 | ||
1851 | /* Get the bounds, and create the array type. */ | |
1852 | ax++; | |
1853 | lower = AUX_GET_DNLOW (bigend, ax); | |
1854 | ax++; | |
1855 | upper = AUX_GET_DNHIGH (bigend, ax); | |
1856 | ax++; | |
1857 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ | |
1858 | ||
1859 | range = create_range_type ((struct type *) NULL, indx, | |
1860 | lower, upper); | |
1861 | ||
1862 | t = create_array_type ((struct type *) NULL, *tpp, range); | |
1863 | ||
1864 | /* We used to fill in the supplied array element bitsize | |
c5aa993b JM |
1865 | here if the TYPE_LENGTH of the target type was zero. |
1866 | This happens for a `pointer to an array of anonymous structs', | |
1867 | but in this case the array element bitsize is also zero, | |
1868 | so nothing is gained. | |
1869 | And we used to check the TYPE_LENGTH of the target type against | |
1870 | the supplied array element bitsize. | |
1871 | gcc causes a mismatch for `pointer to array of object', | |
1872 | since the sdb directives it uses do not have a way of | |
1873 | specifying the bitsize, but it does no harm (the | |
1874 | TYPE_LENGTH should be correct) and we should be able to | |
1875 | ignore the erroneous bitsize from the auxiliary entry safely. | |
1876 | dbx seems to ignore it too. */ | |
c906108c | 1877 | |
d6a843b5 | 1878 | /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */ |
c906108c | 1879 | if (TYPE_LENGTH (*tpp) == 0) |
d6a843b5 | 1880 | TYPE_TARGET_STUB (t) = 1; |
c906108c SS |
1881 | |
1882 | *tpp = t; | |
1883 | return 4 + off; | |
1884 | ||
1885 | case tqVol: | |
1886 | /* Volatile -- currently ignored */ | |
1887 | return 0; | |
1888 | ||
1889 | case tqConst: | |
1890 | /* Const -- currently ignored */ | |
1891 | return 0; | |
1892 | ||
1893 | default: | |
e2e0b3e5 | 1894 | complaint (&symfile_complaints, _("unknown type qualifier 0x%x"), tq); |
c906108c SS |
1895 | return 0; |
1896 | } | |
1897 | } | |
1898 | ||
1899 | ||
1900 | /* Parse a procedure descriptor record PR. Note that the procedure is | |
1901 | parsed _after_ the local symbols, now we just insert the extra | |
f92761ec | 1902 | information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has |
c906108c SS |
1903 | already been placed in the procedure's main block. Note also that |
1904 | images that have been partially stripped (ld -x) have been deprived | |
1905 | of local symbols, and we have to cope with them here. FIRST_OFF is | |
1906 | the offset of the first procedure for this FDR; we adjust the | |
1907 | address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab | |
f92761ec | 1908 | to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol |
c906108c SS |
1909 | in question, or NULL to use top_stack->cur_block. */ |
1910 | ||
a14ed312 | 1911 | static void parse_procedure (PDR *, struct symtab *, struct partial_symtab *); |
c906108c SS |
1912 | |
1913 | static void | |
fba45db2 KB |
1914 | parse_procedure (PDR *pr, struct symtab *search_symtab, |
1915 | struct partial_symtab *pst) | |
c906108c SS |
1916 | { |
1917 | struct symbol *s, *i; | |
1918 | struct block *b; | |
c906108c SS |
1919 | char *sh_name; |
1920 | ||
1921 | /* Simple rule to find files linked "-x" */ | |
1922 | if (cur_fdr->rss == -1) | |
1923 | { | |
1924 | if (pr->isym == -1) | |
1925 | { | |
1926 | /* Static procedure at address pr->adr. Sigh. */ | |
1927 | /* FIXME-32x64. assuming pr->adr fits in long. */ | |
23136709 | 1928 | complaint (&symfile_complaints, |
e2e0b3e5 | 1929 | _("can't handle PDR for static proc at 0x%lx"), |
23136709 | 1930 | (unsigned long) pr->adr); |
c906108c SS |
1931 | return; |
1932 | } | |
1933 | else | |
1934 | { | |
1935 | /* external */ | |
1936 | EXTR she; | |
c5aa993b | 1937 | |
c906108c SS |
1938 | (*debug_swap->swap_ext_in) (cur_bfd, |
1939 | ((char *) debug_info->external_ext | |
1940 | + (pr->isym | |
1941 | * debug_swap->external_ext_size)), | |
1942 | &she); | |
1943 | sh_name = debug_info->ssext + she.asym.iss; | |
1944 | } | |
1945 | } | |
1946 | else | |
1947 | { | |
1948 | /* Full symbols */ | |
1949 | SYMR sh; | |
1950 | ||
1951 | (*debug_swap->swap_sym_in) (cur_bfd, | |
1952 | ((char *) debug_info->external_sym | |
1953 | + ((cur_fdr->isymBase + pr->isym) | |
1954 | * debug_swap->external_sym_size)), | |
1955 | &sh); | |
1956 | sh_name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
1957 | } | |
1958 | ||
1959 | if (search_symtab != NULL) | |
1960 | { | |
1961 | #if 0 | |
1962 | /* This loses both in the case mentioned (want a static, find a global), | |
c5aa993b JM |
1963 | but also if we are looking up a non-mangled name which happens to |
1964 | match the name of a mangled function. */ | |
c906108c | 1965 | /* We have to save the cur_fdr across the call to lookup_symbol. |
c5aa993b JM |
1966 | If the pdr is for a static function and if a global function with |
1967 | the same name exists, lookup_symbol will eventually read in the symtab | |
1968 | for the global function and clobber cur_fdr. */ | |
c906108c | 1969 | FDR *save_cur_fdr = cur_fdr; |
2570f2b7 | 1970 | s = lookup_symbol (sh_name, NULL, VAR_DOMAIN, 0); |
c906108c SS |
1971 | cur_fdr = save_cur_fdr; |
1972 | #else | |
1973 | s = mylookup_symbol | |
1974 | (sh_name, | |
1975 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK), | |
176620f1 | 1976 | VAR_DOMAIN, |
c906108c SS |
1977 | LOC_BLOCK); |
1978 | #endif | |
1979 | } | |
1980 | else | |
1981 | s = mylookup_symbol (sh_name, top_stack->cur_block, | |
176620f1 | 1982 | VAR_DOMAIN, LOC_BLOCK); |
c906108c SS |
1983 | |
1984 | if (s != 0) | |
1985 | { | |
1986 | b = SYMBOL_BLOCK_VALUE (s); | |
1987 | } | |
1988 | else | |
1989 | { | |
e2e0b3e5 | 1990 | complaint (&symfile_complaints, _("PDR for %s, but no symbol"), sh_name); |
c906108c SS |
1991 | #if 1 |
1992 | return; | |
1993 | #else | |
1994 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ | |
1995 | s = new_symbol (sh_name); | |
176620f1 | 1996 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
c906108c SS |
1997 | SYMBOL_CLASS (s) = LOC_BLOCK; |
1998 | /* Donno its type, hope int is ok */ | |
0a9d309a | 1999 | SYMBOL_TYPE (s) |
46bf5051 | 2000 | = lookup_function_type (objfile_type (pst->objfile)->builtin_int); |
c7efd0b9 | 2001 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
2002 | /* Wont have symbols for this one */ |
2003 | b = new_block (2); | |
2004 | SYMBOL_BLOCK_VALUE (s) = b; | |
2005 | BLOCK_FUNCTION (b) = s; | |
2006 | BLOCK_START (b) = pr->adr; | |
2007 | /* BOUND used to be the end of procedure's text, but the | |
c5aa993b | 2008 | argument is no longer passed in. */ |
c906108c SS |
2009 | BLOCK_END (b) = bound; |
2010 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
2011 | add_block (b, top_stack->cur_st); | |
2012 | #endif | |
2013 | } | |
2014 | ||
f92761ec | 2015 | i = mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME, b, LABEL_DOMAIN, LOC_CONST); |
c906108c SS |
2016 | |
2017 | if (i) | |
2018 | { | |
9918cab9 JB |
2019 | struct mdebug_extra_func_info *e; |
2020 | ||
2021 | e = (struct mdebug_extra_func_info *) SYMBOL_VALUE_BYTES (i); | |
c906108c | 2022 | e->pdr = *pr; |
c906108c SS |
2023 | |
2024 | /* GDB expects the absolute function start address for the | |
c5aa993b JM |
2025 | procedure descriptor in e->pdr.adr. |
2026 | As the address in the procedure descriptor is usually relative, | |
2027 | we would have to relocate e->pdr.adr with cur_fdr->adr and | |
b8fbeb18 | 2028 | ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)). |
c5aa993b JM |
2029 | Unfortunately cur_fdr->adr and e->pdr.adr are both absolute |
2030 | in shared libraries on some systems, and on other systems | |
2031 | e->pdr.adr is sometimes offset by a bogus value. | |
2032 | To work around these problems, we replace e->pdr.adr with | |
2033 | the start address of the function. */ | |
c906108c | 2034 | e->pdr.adr = BLOCK_START (b); |
c906108c SS |
2035 | } |
2036 | ||
2037 | /* It would be reasonable that functions that have been compiled | |
2038 | without debugging info have a btNil type for their return value, | |
2039 | and functions that are void and are compiled with debugging info | |
2040 | have btVoid. | |
2041 | gcc and DEC f77 put out btNil types for both cases, so btNil is mapped | |
2042 | to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info' | |
2043 | case right. | |
2044 | The glevel field in cur_fdr could be used to determine the presence | |
2045 | of debugging info, but GCC doesn't always pass the -g switch settings | |
2046 | to the assembler and GAS doesn't set the glevel field from the -g switch | |
2047 | settings. | |
2048 | To work around these problems, the return value type of a TYPE_CODE_VOID | |
2049 | function is adjusted accordingly if no debugging info was found in the | |
2050 | compilation unit. */ | |
c5aa993b | 2051 | |
c906108c SS |
2052 | if (processing_gcc_compilation == 0 |
2053 | && found_ecoff_debugging_info == 0 | |
2054 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID) | |
46bf5051 | 2055 | SYMBOL_TYPE (s) = objfile_type (pst->objfile)->nodebug_text_symbol; |
c906108c SS |
2056 | } |
2057 | ||
c906108c SS |
2058 | /* Parse the external symbol ES. Just call parse_symbol() after |
2059 | making sure we know where the aux are for it. | |
2060 | BIGEND says whether aux entries are big-endian or little-endian. | |
2061 | ||
2062 | This routine clobbers top_stack->cur_block and ->cur_st. */ | |
2063 | ||
a14ed312 KB |
2064 | static void parse_external (EXTR *, int, struct section_offsets *, |
2065 | struct objfile *); | |
c906108c SS |
2066 | |
2067 | static void | |
fba45db2 KB |
2068 | parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets, |
2069 | struct objfile *objfile) | |
c906108c SS |
2070 | { |
2071 | union aux_ext *ax; | |
2072 | ||
2073 | if (es->ifd != ifdNil) | |
2074 | { | |
2075 | cur_fd = es->ifd; | |
2076 | cur_fdr = debug_info->fdr + cur_fd; | |
2077 | ax = debug_info->external_aux + cur_fdr->iauxBase; | |
2078 | } | |
2079 | else | |
2080 | { | |
2081 | cur_fdr = debug_info->fdr; | |
2082 | ax = 0; | |
2083 | } | |
2084 | ||
2085 | /* Reading .o files */ | |
c5aa993b | 2086 | if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil) |
c906108c SS |
2087 | { |
2088 | char *what; | |
2089 | switch (es->asym.st) | |
2090 | { | |
2091 | case stNil: | |
2092 | /* These are generated for static symbols in .o files, | |
2093 | ignore them. */ | |
2094 | return; | |
2095 | case stStaticProc: | |
2096 | case stProc: | |
2097 | what = "procedure"; | |
2098 | n_undef_procs++; | |
2099 | break; | |
2100 | case stGlobal: | |
2101 | what = "variable"; | |
2102 | n_undef_vars++; | |
2103 | break; | |
2104 | case stLabel: | |
2105 | what = "label"; | |
2106 | n_undef_labels++; | |
2107 | break; | |
2108 | default: | |
2109 | what = "symbol"; | |
2110 | break; | |
2111 | } | |
2112 | n_undef_symbols++; | |
2113 | /* FIXME: Turn this into a complaint? */ | |
2114 | if (info_verbose) | |
a3f17187 | 2115 | printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"), |
c906108c SS |
2116 | what, debug_info->ssext + es->asym.iss, |
2117 | fdr_name (cur_fdr)); | |
2118 | return; | |
2119 | } | |
2120 | ||
2121 | switch (es->asym.st) | |
2122 | { | |
2123 | case stProc: | |
2124 | case stStaticProc: | |
2125 | /* There is no need to parse the external procedure symbols. | |
c5aa993b JM |
2126 | If they are from objects compiled without -g, their index will |
2127 | be indexNil, and the symbol definition from the minimal symbol | |
2128 | is preferrable (yielding a function returning int instead of int). | |
2129 | If the index points to a local procedure symbol, the local | |
2130 | symbol already provides the correct type. | |
2131 | Note that the index of the external procedure symbol points | |
2132 | to the local procedure symbol in the local symbol table, and | |
2133 | _not_ to the auxiliary symbol info. */ | |
c906108c SS |
2134 | break; |
2135 | case stGlobal: | |
2136 | case stLabel: | |
2137 | /* Global common symbols are resolved by the runtime loader, | |
c5aa993b JM |
2138 | ignore them. */ |
2139 | if (SC_IS_COMMON (es->asym.sc)) | |
c906108c SS |
2140 | break; |
2141 | ||
2142 | /* Note that the case of a symbol with indexNil must be handled | |
c5aa993b | 2143 | anyways by parse_symbol(). */ |
b8fbeb18 | 2144 | parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets, objfile); |
c906108c SS |
2145 | break; |
2146 | default: | |
2147 | break; | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | /* Parse the line number info for file descriptor FH into | |
2152 | GDB's linetable LT. MIPS' encoding requires a little bit | |
2153 | of magic to get things out. Note also that MIPS' line | |
2154 | numbers can go back and forth, apparently we can live | |
2155 | with that and do not need to reorder our linetables */ | |
2156 | ||
a14ed312 KB |
2157 | static void parse_lines (FDR *, PDR *, struct linetable *, int, |
2158 | struct partial_symtab *, CORE_ADDR); | |
c906108c SS |
2159 | |
2160 | static void | |
fba45db2 KB |
2161 | parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines, |
2162 | struct partial_symtab *pst, CORE_ADDR lowest_pdr_addr) | |
c906108c SS |
2163 | { |
2164 | unsigned char *base; | |
2165 | int j, k; | |
2166 | int delta, count, lineno = 0; | |
2167 | ||
2168 | if (fh->cbLine == 0) | |
2169 | return; | |
2170 | ||
2171 | /* Scan by procedure descriptors */ | |
2172 | k = 0; | |
2173 | for (j = 0; j < fh->cpd; j++, pr++) | |
2174 | { | |
2175 | CORE_ADDR l; | |
2176 | CORE_ADDR adr; | |
2177 | unsigned char *halt; | |
2178 | ||
2179 | /* No code for this one */ | |
2180 | if (pr->iline == ilineNil || | |
2181 | pr->lnLow == -1 || pr->lnHigh == -1) | |
2182 | continue; | |
2183 | ||
2184 | /* Determine start and end address of compressed line bytes for | |
c5aa993b | 2185 | this procedure. */ |
c906108c SS |
2186 | base = debug_info->line + fh->cbLineOffset; |
2187 | if (j != (fh->cpd - 1)) | |
c5aa993b | 2188 | halt = base + pr[1].cbLineOffset; |
c906108c | 2189 | else |
c5aa993b | 2190 | halt = base + fh->cbLine; |
c906108c SS |
2191 | base += pr->cbLineOffset; |
2192 | ||
5afc051b | 2193 | adr = pst->textlow + pr->adr - lowest_pdr_addr; |
c906108c SS |
2194 | |
2195 | l = adr >> 2; /* in words */ | |
c5aa993b | 2196 | for (lineno = pr->lnLow; base < halt;) |
c906108c SS |
2197 | { |
2198 | count = *base & 0x0f; | |
2199 | delta = *base++ >> 4; | |
2200 | if (delta >= 8) | |
2201 | delta -= 16; | |
2202 | if (delta == -8) | |
2203 | { | |
2204 | delta = (base[0] << 8) | base[1]; | |
2205 | if (delta >= 0x8000) | |
2206 | delta -= 0x10000; | |
2207 | base += 2; | |
2208 | } | |
2209 | lineno += delta; /* first delta is 0 */ | |
2210 | ||
2211 | /* Complain if the line table overflows. Could happen | |
2212 | with corrupt binaries. */ | |
2213 | if (lt->nitems >= maxlines) | |
2214 | { | |
23136709 | 2215 | complaint (&symfile_complaints, |
e2e0b3e5 | 2216 | _("guessed size of linetable for %s incorrectly"), |
23136709 | 2217 | fdr_name (fh)); |
c906108c SS |
2218 | break; |
2219 | } | |
2220 | k = add_line (lt, lineno, l, k); | |
2221 | l += count + 1; | |
2222 | } | |
2223 | } | |
2224 | } | |
2225 | \f | |
23136709 KB |
2226 | static void |
2227 | function_outside_compilation_unit_complaint (const char *arg1) | |
2228 | { | |
2229 | complaint (&symfile_complaints, | |
e2e0b3e5 | 2230 | _("function `%s' appears to be defined outside of all compilation units"), |
23136709 KB |
2231 | arg1); |
2232 | } | |
2233 | ||
1f9872de JB |
2234 | /* Use the STORAGE_CLASS to compute which section the given symbol |
2235 | belongs to, and then records this new minimal symbol. */ | |
2236 | ||
2237 | static void | |
2238 | record_minimal_symbol (const char *name, const CORE_ADDR address, | |
2239 | enum minimal_symbol_type ms_type, int storage_class, | |
2240 | struct objfile *objfile) | |
2241 | { | |
2242 | int section; | |
2243 | asection *bfd_section; | |
2244 | ||
2245 | switch (storage_class) | |
2246 | { | |
2247 | case scText: | |
2248 | section = SECT_OFF_TEXT (objfile); | |
2249 | bfd_section = bfd_get_section_by_name (cur_bfd, ".text"); | |
2250 | break; | |
2251 | case scData: | |
2252 | section = SECT_OFF_DATA (objfile); | |
2253 | bfd_section = bfd_get_section_by_name (cur_bfd, ".data"); | |
2254 | break; | |
2255 | case scBss: | |
2256 | section = SECT_OFF_BSS (objfile); | |
2257 | bfd_section = bfd_get_section_by_name (cur_bfd, ".bss"); | |
2258 | break; | |
2259 | case scSData: | |
2260 | section = get_section_index (objfile, ".sdata"); | |
2261 | bfd_section = bfd_get_section_by_name (cur_bfd, ".sdata"); | |
2262 | break; | |
2263 | case scSBss: | |
2264 | section = get_section_index (objfile, ".sbss"); | |
2265 | bfd_section = bfd_get_section_by_name (cur_bfd, ".sbss"); | |
2266 | break; | |
2267 | case scRData: | |
2268 | section = get_section_index (objfile, ".rdata"); | |
2269 | bfd_section = bfd_get_section_by_name (cur_bfd, ".rdata"); | |
2270 | break; | |
2271 | case scInit: | |
2272 | section = get_section_index (objfile, ".init"); | |
2273 | bfd_section = bfd_get_section_by_name (cur_bfd, ".init"); | |
2274 | break; | |
2275 | case scXData: | |
2276 | section = get_section_index (objfile, ".xdata"); | |
2277 | bfd_section = bfd_get_section_by_name (cur_bfd, ".xdata"); | |
2278 | break; | |
2279 | case scPData: | |
2280 | section = get_section_index (objfile, ".pdata"); | |
2281 | bfd_section = bfd_get_section_by_name (cur_bfd, ".pdata"); | |
2282 | break; | |
2283 | case scFini: | |
2284 | section = get_section_index (objfile, ".fini"); | |
2285 | bfd_section = bfd_get_section_by_name (cur_bfd, ".fini"); | |
2286 | break; | |
2287 | case scRConst: | |
2288 | section = get_section_index (objfile, ".rconst"); | |
2289 | bfd_section = bfd_get_section_by_name (cur_bfd, ".rconst"); | |
2290 | break; | |
2291 | #ifdef scTlsData | |
2292 | case scTlsData: | |
2293 | section = get_section_index (objfile, ".tlsdata"); | |
2294 | bfd_section = bfd_get_section_by_name (cur_bfd, ".tlsdata"); | |
2295 | break; | |
2296 | #endif | |
2297 | #ifdef scTlsBss | |
2298 | case scTlsBss: | |
2299 | section = get_section_index (objfile, ".tlsbss"); | |
2300 | bfd_section = bfd_get_section_by_name (cur_bfd, ".tlsbss"); | |
2301 | break; | |
2302 | #endif | |
2303 | default: | |
2304 | /* This kind of symbol is not associated to a section. */ | |
2305 | section = -1; | |
2306 | bfd_section = NULL; | |
2307 | } | |
2308 | ||
b887350f | 2309 | prim_record_minimal_symbol_and_info (name, address, ms_type, |
1f9872de JB |
2310 | section, bfd_section, objfile); |
2311 | } | |
2312 | ||
c906108c SS |
2313 | /* Master parsing procedure for first-pass reading of file symbols |
2314 | into a partial_symtab. */ | |
2315 | ||
2316 | static void | |
fba45db2 | 2317 | parse_partial_symbols (struct objfile *objfile) |
c906108c | 2318 | { |
5e2b427d | 2319 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
2320 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; |
2321 | const bfd_size_type external_rfd_size = debug_swap->external_rfd_size; | |
2322 | const bfd_size_type external_ext_size = debug_swap->external_ext_size; | |
12b9c64f AO |
2323 | void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in; |
2324 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; | |
2325 | void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in; | |
c906108c SS |
2326 | int f_idx, s_idx; |
2327 | HDRR *hdr = &debug_info->symbolic_header; | |
2328 | /* Running pointers */ | |
2329 | FDR *fh; | |
2330 | char *ext_out; | |
2331 | char *ext_out_end; | |
2332 | EXTR *ext_block; | |
52f0bd74 | 2333 | EXTR *ext_in; |
c906108c SS |
2334 | EXTR *ext_in_end; |
2335 | SYMR sh; | |
2336 | struct partial_symtab *pst; | |
2337 | int textlow_not_set = 1; | |
2338 | int past_first_source_file = 0; | |
2339 | ||
2340 | /* List of current psymtab's include files */ | |
2341 | char **psymtab_include_list; | |
2342 | int includes_allocated; | |
2343 | int includes_used; | |
2344 | EXTR *extern_tab; | |
2345 | struct pst_map *fdr_to_pst; | |
2346 | /* Index within current psymtab dependency list */ | |
2347 | struct partial_symtab **dependency_list; | |
2348 | int dependencies_used, dependencies_allocated; | |
2349 | struct cleanup *old_chain; | |
2350 | char *name; | |
2351 | enum language prev_language; | |
2352 | asection *text_sect; | |
2353 | int relocatable = 0; | |
2354 | ||
2355 | /* Irix 5.2 shared libraries have a fh->adr field of zero, but | |
2356 | the shared libraries are prelinked at a high memory address. | |
2357 | We have to adjust the start address of the object file for this case, | |
2358 | by setting it to the start address of the first procedure in the file. | |
2359 | But we should do no adjustments if we are debugging a .o file, where | |
2360 | the text section (and fh->adr) really starts at zero. */ | |
2361 | text_sect = bfd_get_section_by_name (cur_bfd, ".text"); | |
2362 | if (text_sect != NULL | |
2363 | && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC)) | |
2364 | relocatable = 1; | |
2365 | ||
8b92e4d5 | 2366 | extern_tab = (EXTR *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2367 | sizeof (EXTR) * hdr->iextMax); |
2368 | ||
2369 | includes_allocated = 30; | |
2370 | includes_used = 0; | |
2371 | psymtab_include_list = (char **) alloca (includes_allocated * | |
2372 | sizeof (char *)); | |
2373 | next_symbol_text_func = mdebug_next_symbol_text; | |
2374 | ||
2375 | dependencies_allocated = 30; | |
2376 | dependencies_used = 0; | |
2377 | dependency_list = | |
2378 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2379 | sizeof (struct partial_symtab *)); | |
2380 | ||
2381 | last_source_file = NULL; | |
2382 | ||
2383 | /* | |
2384 | * Big plan: | |
2385 | * | |
2386 | * Only parse the Local and External symbols, and the Relative FDR. | |
2387 | * Fixup enough of the loader symtab to be able to use it. | |
2388 | * Allocate space only for the file's portions we need to | |
2389 | * look at. (XXX) | |
2390 | */ | |
2391 | ||
2392 | max_gdbinfo = 0; | |
2393 | max_glevel = MIN_GLEVEL; | |
2394 | ||
2395 | /* Allocate the map FDR -> PST. | |
2396 | Minor hack: -O3 images might claim some global data belongs | |
2397 | to FDR -1. We`ll go along with that */ | |
2398 | fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst); | |
b8c9b27d | 2399 | old_chain = make_cleanup (xfree, fdr_to_pst); |
c906108c SS |
2400 | fdr_to_pst++; |
2401 | { | |
d4f3574e | 2402 | struct partial_symtab *pst = new_psymtab ("", objfile); |
c906108c SS |
2403 | fdr_to_pst[-1].pst = pst; |
2404 | FDR_IDX (pst) = -1; | |
2405 | } | |
2406 | ||
2407 | /* Allocate the global pending list. */ | |
2408 | pending_list = | |
2409 | ((struct mdebug_pending **) | |
8b92e4d5 | 2410 | obstack_alloc (&objfile->objfile_obstack, |
c906108c | 2411 | hdr->ifdMax * sizeof (struct mdebug_pending *))); |
12b9c64f | 2412 | memset (pending_list, 0, |
c906108c SS |
2413 | hdr->ifdMax * sizeof (struct mdebug_pending *)); |
2414 | ||
2415 | /* Pass 0 over external syms: swap them in. */ | |
2416 | ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR)); | |
b8c9b27d | 2417 | make_cleanup (xfree, ext_block); |
c906108c SS |
2418 | |
2419 | ext_out = (char *) debug_info->external_ext; | |
2420 | ext_out_end = ext_out + hdr->iextMax * external_ext_size; | |
2421 | ext_in = ext_block; | |
2422 | for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) | |
2423 | (*swap_ext_in) (cur_bfd, ext_out, ext_in); | |
2424 | ||
2425 | /* Pass 1 over external syms: Presize and partition the list */ | |
2426 | ext_in = ext_block; | |
2427 | ext_in_end = ext_in + hdr->iextMax; | |
2428 | for (; ext_in < ext_in_end; ext_in++) | |
2429 | { | |
2430 | /* See calls to complain below. */ | |
2431 | if (ext_in->ifd >= -1 | |
2432 | && ext_in->ifd < hdr->ifdMax | |
2433 | && ext_in->asym.iss >= 0 | |
2434 | && ext_in->asym.iss < hdr->issExtMax) | |
2435 | fdr_to_pst[ext_in->ifd].n_globals++; | |
2436 | } | |
2437 | ||
2438 | /* Pass 1.5 over files: partition out global symbol space */ | |
2439 | s_idx = 0; | |
2440 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) | |
2441 | { | |
2442 | fdr_to_pst[f_idx].globals_offset = s_idx; | |
2443 | s_idx += fdr_to_pst[f_idx].n_globals; | |
2444 | fdr_to_pst[f_idx].n_globals = 0; | |
2445 | } | |
2446 | ||
2447 | /* ECOFF in ELF: | |
2448 | ||
2449 | For ECOFF in ELF, we skip the creation of the minimal symbols. | |
2450 | The ECOFF symbols should be a subset of the Elf symbols, and the | |
2451 | section information of the elf symbols will be more accurate. | |
2452 | FIXME! What about Irix 5's native linker? | |
2453 | ||
2454 | By default, Elf sections which don't exist in ECOFF | |
2455 | get put in ECOFF's absolute section by the gnu linker. | |
2456 | Since absolute sections don't get relocated, we | |
2457 | end up calculating an address different from that of | |
2458 | the symbol's minimal symbol (created earlier from the | |
2459 | Elf symtab). | |
2460 | ||
2461 | To fix this, either : | |
2462 | 1) don't create the duplicate symbol | |
c5aa993b JM |
2463 | (assumes ECOFF symtab is a subset of the ELF symtab; |
2464 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2465 | 2) create it, only if lookup for existing symbol in ELF's minimal |
c5aa993b JM |
2466 | symbols fails |
2467 | (inefficient; | |
2468 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2469 | 3) create it, but lookup ELF's minimal symbol and use it's section |
c5aa993b JM |
2470 | during relocation, then modify "uniqify" phase to merge and |
2471 | eliminate the duplicate symbol | |
2472 | (highly inefficient) | |
c906108c SS |
2473 | |
2474 | I've implemented #1 here... | |
2475 | Skip the creation of the minimal symbols based on the ECOFF | |
2476 | symbol table. */ | |
2477 | ||
c5aa993b JM |
2478 | /* Pass 2 over external syms: fill in external symbols */ |
2479 | ext_in = ext_block; | |
2480 | ext_in_end = ext_in + hdr->iextMax; | |
2481 | for (; ext_in < ext_in_end; ext_in++) | |
2482 | { | |
2483 | enum minimal_symbol_type ms_type = mst_text; | |
2484 | CORE_ADDR svalue = ext_in->asym.value; | |
c906108c | 2485 | |
c5aa993b JM |
2486 | /* The Irix 5 native tools seem to sometimes generate bogus |
2487 | external symbols. */ | |
2488 | if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax) | |
2489 | { | |
23136709 | 2490 | complaint (&symfile_complaints, |
e2e0b3e5 | 2491 | _("bad ifd for external symbol: %d (max %ld)"), ext_in->ifd, |
23136709 | 2492 | hdr->ifdMax); |
c5aa993b JM |
2493 | continue; |
2494 | } | |
2495 | if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax) | |
2496 | { | |
23136709 | 2497 | complaint (&symfile_complaints, |
e2e0b3e5 | 2498 | _("bad iss for external symbol: %ld (max %ld)"), |
23136709 | 2499 | ext_in->asym.iss, hdr->issExtMax); |
c5aa993b JM |
2500 | continue; |
2501 | } | |
c906108c | 2502 | |
c5aa993b JM |
2503 | extern_tab[fdr_to_pst[ext_in->ifd].globals_offset |
2504 | + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; | |
c906108c SS |
2505 | |
2506 | ||
c5aa993b JM |
2507 | if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil) |
2508 | continue; | |
c906108c | 2509 | |
c906108c | 2510 | |
c5aa993b JM |
2511 | /* Pass 3 over files, over local syms: fill in static symbols */ |
2512 | name = debug_info->ssext + ext_in->asym.iss; | |
2513 | ||
2514 | /* Process ECOFF Symbol Types and Storage Classes */ | |
2515 | switch (ext_in->asym.st) | |
2516 | { | |
2517 | case stProc: | |
2518 | /* Beginnning of Procedure */ | |
b8fbeb18 | 2519 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2520 | break; |
2521 | case stStaticProc: | |
2522 | /* Load time only static procs */ | |
2523 | ms_type = mst_file_text; | |
b8fbeb18 | 2524 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2525 | break; |
2526 | case stGlobal: | |
2527 | /* External symbol */ | |
2528 | if (SC_IS_COMMON (ext_in->asym.sc)) | |
2529 | { | |
2530 | /* The value of a common symbol is its size, not its address. | |
2531 | Ignore it. */ | |
c906108c | 2532 | continue; |
c5aa993b JM |
2533 | } |
2534 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2535 | { | |
2536 | ms_type = mst_data; | |
b8fbeb18 | 2537 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c5aa993b JM |
2538 | } |
2539 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2540 | { | |
2541 | ms_type = mst_bss; | |
b8fbeb18 | 2542 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c5aa993b | 2543 | } |
0e931cf0 JB |
2544 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2545 | { | |
2546 | ms_type = mst_bss; | |
2547 | svalue += ANOFFSET (objfile->section_offsets, | |
2548 | get_section_index (objfile, ".sbss")); | |
2549 | } | |
c5aa993b JM |
2550 | else |
2551 | ms_type = mst_abs; | |
2552 | break; | |
2553 | case stLabel: | |
2554 | /* Label */ | |
0e931cf0 JB |
2555 | |
2556 | /* On certain platforms, some extra label symbols can be | |
2557 | generated by the linker. One possible usage for this kind | |
2558 | of symbols is to represent the address of the begining of a | |
2559 | given section. For instance, on Tru64 5.1, the address of | |
2560 | the _ftext label is the start address of the .text section. | |
2561 | ||
2562 | The storage class of these symbols is usually directly | |
2563 | related to the section to which the symbol refers. For | |
2564 | instance, on Tru64 5.1, the storage class for the _fdata | |
2565 | label is scData, refering to the .data section. | |
2566 | ||
2567 | It is actually possible that the section associated to the | |
2568 | storage class of the label does not exist. On True64 5.1 | |
2569 | for instance, the libm.so shared library does not contain | |
2570 | any .data section, although it contains a _fpdata label | |
2571 | which storage class is scData... Since these symbols are | |
2572 | usually useless for the debugger user anyway, we just | |
2573 | discard these symbols. | |
2574 | */ | |
2575 | ||
c5aa993b JM |
2576 | if (SC_IS_TEXT (ext_in->asym.sc)) |
2577 | { | |
0e931cf0 JB |
2578 | if (objfile->sect_index_text == -1) |
2579 | continue; | |
2580 | ||
c5aa993b | 2581 | ms_type = mst_file_text; |
b8fbeb18 | 2582 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2583 | } |
2584 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2585 | { | |
0e931cf0 JB |
2586 | if (objfile->sect_index_data == -1) |
2587 | continue; | |
2588 | ||
c5aa993b | 2589 | ms_type = mst_file_data; |
b8fbeb18 | 2590 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c5aa993b JM |
2591 | } |
2592 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2593 | { | |
0e931cf0 JB |
2594 | if (objfile->sect_index_bss == -1) |
2595 | continue; | |
2596 | ||
c5aa993b | 2597 | ms_type = mst_file_bss; |
b8fbeb18 | 2598 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c5aa993b | 2599 | } |
0e931cf0 JB |
2600 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2601 | { | |
2602 | const int sbss_sect_index = get_section_index (objfile, ".sbss"); | |
2603 | ||
2604 | if (sbss_sect_index == -1) | |
2605 | continue; | |
2606 | ||
2607 | ms_type = mst_file_bss; | |
2608 | svalue += ANOFFSET (objfile->section_offsets, sbss_sect_index); | |
2609 | } | |
c5aa993b JM |
2610 | else |
2611 | ms_type = mst_abs; | |
2612 | break; | |
2613 | case stLocal: | |
2614 | case stNil: | |
2615 | /* The alpha has the section start addresses in stLocal symbols | |
2616 | whose name starts with a `.'. Skip those but complain for all | |
2617 | other stLocal symbols. | |
2618 | Irix6 puts the section start addresses in stNil symbols, skip | |
2619 | those too. */ | |
2620 | if (name[0] == '.') | |
2621 | continue; | |
2622 | /* Fall through. */ | |
2623 | default: | |
2624 | ms_type = mst_unknown; | |
23136709 | 2625 | unknown_ext_complaint (name); |
c5aa993b JM |
2626 | } |
2627 | if (!ECOFF_IN_ELF (cur_bfd)) | |
1f9872de JB |
2628 | record_minimal_symbol (name, svalue, ms_type, ext_in->asym.sc, |
2629 | objfile); | |
c5aa993b | 2630 | } |
c906108c SS |
2631 | |
2632 | /* Pass 3 over files, over local syms: fill in static symbols */ | |
2633 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) | |
2634 | { | |
2635 | struct partial_symtab *save_pst; | |
2636 | EXTR *ext_ptr; | |
2637 | CORE_ADDR textlow; | |
2638 | ||
2639 | cur_fdr = fh = debug_info->fdr + f_idx; | |
2640 | ||
2641 | if (fh->csym == 0) | |
2642 | { | |
2643 | fdr_to_pst[f_idx].pst = NULL; | |
2644 | continue; | |
2645 | } | |
2646 | ||
2647 | /* Determine the start address for this object file from the | |
c5aa993b | 2648 | file header and relocate it, except for Irix 5.2 zero fh->adr. */ |
c906108c SS |
2649 | if (fh->cpd) |
2650 | { | |
2651 | textlow = fh->adr; | |
2652 | if (relocatable || textlow != 0) | |
b8fbeb18 | 2653 | textlow += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2654 | } |
2655 | else | |
2656 | textlow = 0; | |
d4f3574e | 2657 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
c906108c SS |
2658 | fdr_name (fh), |
2659 | textlow, | |
2660 | objfile->global_psymbols.next, | |
2661 | objfile->static_psymbols.next); | |
2662 | pst->read_symtab_private = ((char *) | |
8b92e4d5 | 2663 | obstack_alloc (&objfile->objfile_obstack, |
c906108c | 2664 | sizeof (struct symloc))); |
12b9c64f | 2665 | memset (pst->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
2666 | |
2667 | save_pst = pst; | |
2668 | FDR_IDX (pst) = f_idx; | |
2669 | CUR_BFD (pst) = cur_bfd; | |
2670 | DEBUG_SWAP (pst) = debug_swap; | |
2671 | DEBUG_INFO (pst) = debug_info; | |
2672 | PENDING_LIST (pst) = pending_list; | |
2673 | ||
2674 | /* The way to turn this into a symtab is to call... */ | |
2675 | pst->read_symtab = mdebug_psymtab_to_symtab; | |
2676 | ||
2677 | /* Set up language for the pst. | |
2678 | The language from the FDR is used if it is unambigious (e.g. cfront | |
c5aa993b JM |
2679 | with native cc and g++ will set the language to C). |
2680 | Otherwise we have to deduce the language from the filename. | |
2681 | Native ecoff has every header file in a separate FDR, so | |
2682 | deduce_language_from_filename will return language_unknown for | |
2683 | a header file, which is not what we want. | |
2684 | But the FDRs for the header files are after the FDR for the source | |
2685 | file, so we can assign the language of the source file to the | |
2686 | following header files. Then we save the language in the private | |
2687 | pst data so that we can reuse it when building symtabs. */ | |
c906108c SS |
2688 | prev_language = psymtab_language; |
2689 | ||
2690 | switch (fh->lang) | |
2691 | { | |
2692 | case langCplusplusV2: | |
2693 | psymtab_language = language_cplus; | |
2694 | break; | |
2695 | default: | |
2696 | psymtab_language = deduce_language_from_filename (fdr_name (fh)); | |
2697 | break; | |
2698 | } | |
2699 | if (psymtab_language == language_unknown) | |
2700 | psymtab_language = prev_language; | |
2701 | PST_PRIVATE (pst)->pst_language = psymtab_language; | |
2702 | ||
5afc051b | 2703 | pst->texthigh = pst->textlow; |
c906108c SS |
2704 | |
2705 | /* For stabs-in-ecoff files, the second symbol must be @stab. | |
c5aa993b JM |
2706 | This symbol is emitted by mips-tfile to signal that the |
2707 | current object file uses encapsulated stabs instead of mips | |
2708 | ecoff for local symbols. (It is the second symbol because | |
2709 | the first symbol is the stFile used to signal the start of a | |
2710 | file). */ | |
c906108c SS |
2711 | processing_gcc_compilation = 0; |
2712 | if (fh->csym >= 2) | |
2713 | { | |
2714 | (*swap_sym_in) (cur_bfd, | |
2715 | ((char *) debug_info->external_sym | |
2716 | + (fh->isymBase + 1) * external_sym_size), | |
2717 | &sh); | |
ee300cd4 AC |
2718 | if (strcmp (debug_info->ss + fh->issBase + sh.iss, |
2719 | stabs_symbol) == 0) | |
c906108c SS |
2720 | processing_gcc_compilation = 2; |
2721 | } | |
2722 | ||
2723 | if (processing_gcc_compilation != 0) | |
2724 | { | |
2725 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
2726 | { | |
2727 | int type_code; | |
2728 | char *namestring; | |
2729 | ||
2730 | (*swap_sym_in) (cur_bfd, | |
2731 | (((char *) debug_info->external_sym) | |
c5aa993b | 2732 | + (fh->isymBase + cur_sdx) * external_sym_size), |
c906108c SS |
2733 | &sh); |
2734 | type_code = ECOFF_UNMARK_STAB (sh.index); | |
2735 | if (!ECOFF_IS_STAB (&sh)) | |
2736 | { | |
2737 | if (sh.st == stProc || sh.st == stStaticProc) | |
2738 | { | |
2739 | CORE_ADDR procaddr; | |
2740 | long isym; | |
c5aa993b | 2741 | |
b8fbeb18 | 2742 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2743 | if (sh.st == stStaticProc) |
2744 | { | |
2745 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
1f9872de JB |
2746 | record_minimal_symbol (namestring, sh.value, |
2747 | mst_file_text, sh.sc, | |
2748 | objfile); | |
c906108c SS |
2749 | } |
2750 | procaddr = sh.value; | |
2751 | ||
2752 | isym = AUX_GET_ISYM (fh->fBigendian, | |
2753 | (debug_info->external_aux | |
2754 | + fh->iauxBase | |
2755 | + sh.index)); | |
2756 | (*swap_sym_in) (cur_bfd, | |
2757 | ((char *) debug_info->external_sym | |
2758 | + ((fh->isymBase + isym - 1) | |
2759 | * external_sym_size)), | |
2760 | &sh); | |
2761 | if (sh.st == stEnd) | |
2762 | { | |
2763 | CORE_ADDR high = procaddr + sh.value; | |
2764 | ||
c5aa993b | 2765 | /* Kludge for Irix 5.2 zero fh->adr. */ |
c906108c | 2766 | if (!relocatable |
5afc051b JB |
2767 | && (pst->textlow == 0 || procaddr < pst->textlow)) |
2768 | pst->textlow = procaddr; | |
2769 | if (high > pst->texthigh) | |
2770 | pst->texthigh = high; | |
c906108c SS |
2771 | } |
2772 | } | |
2773 | else if (sh.st == stStatic) | |
2774 | { | |
2775 | switch (sh.sc) | |
2776 | { | |
2777 | case scUndefined: | |
2778 | case scSUndefined: | |
2779 | case scNil: | |
2780 | case scAbs: | |
2781 | break; | |
2782 | ||
2783 | case scData: | |
2784 | case scSData: | |
2785 | case scRData: | |
2786 | case scPData: | |
2787 | case scXData: | |
2788 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
b8fbeb18 | 2789 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
1f9872de JB |
2790 | record_minimal_symbol (namestring, sh.value, |
2791 | mst_file_data, sh.sc, | |
2792 | objfile); | |
c906108c SS |
2793 | break; |
2794 | ||
2795 | default: | |
2796 | /* FIXME! Shouldn't this use cases for bss, | |
2797 | then have the default be abs? */ | |
2798 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
b8fbeb18 | 2799 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
1f9872de JB |
2800 | record_minimal_symbol (namestring, sh.value, |
2801 | mst_file_bss, sh.sc, | |
2802 | objfile); | |
c906108c SS |
2803 | break; |
2804 | } | |
2805 | } | |
2806 | continue; | |
2807 | } | |
2808 | /* Handle stabs continuation */ | |
2809 | { | |
2810 | char *stabstring = debug_info->ss + fh->issBase + sh.iss; | |
2811 | int len = strlen (stabstring); | |
c5aa993b | 2812 | while (stabstring[len - 1] == '\\') |
c906108c SS |
2813 | { |
2814 | SYMR sh2; | |
2815 | char *stabstring1 = stabstring; | |
2816 | char *stabstring2; | |
2817 | int len2; | |
2818 | ||
2819 | /* Ignore continuation char from 1st string */ | |
2820 | len--; | |
2821 | ||
2822 | /* Read next stabstring */ | |
2823 | cur_sdx++; | |
2824 | (*swap_sym_in) (cur_bfd, | |
2825 | (((char *) debug_info->external_sym) | |
c5aa993b | 2826 | + (fh->isymBase + cur_sdx) |
c906108c SS |
2827 | * external_sym_size), |
2828 | &sh2); | |
2829 | stabstring2 = debug_info->ss + fh->issBase + sh2.iss; | |
2830 | len2 = strlen (stabstring2); | |
2831 | ||
2832 | /* Concatinate stabstring2 with stabstring1 */ | |
2833 | if (stabstring | |
c5aa993b | 2834 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
c906108c SS |
2835 | stabstring = xrealloc (stabstring, len + len2 + 1); |
2836 | else | |
86f902e0 FF |
2837 | { |
2838 | stabstring = xmalloc (len + len2 + 1); | |
2839 | strcpy (stabstring, stabstring1); | |
2840 | } | |
c906108c SS |
2841 | strcpy (stabstring + len, stabstring2); |
2842 | len += len2; | |
2843 | } | |
2844 | ||
d3119d1e EZ |
2845 | switch (type_code) |
2846 | { | |
d3119d1e EZ |
2847 | char *p; |
2848 | /* | |
2849 | * Standard, external, non-debugger, symbols | |
2850 | */ | |
2851 | ||
2852 | case N_TEXT | N_EXT: | |
2853 | case N_NBTEXT | N_EXT: | |
2854 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2855 | goto record_it; | |
2856 | ||
2857 | case N_DATA | N_EXT: | |
2858 | case N_NBDATA | N_EXT: | |
2859 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2860 | goto record_it; | |
2861 | ||
2862 | case N_BSS: | |
2863 | case N_BSS | N_EXT: | |
2864 | case N_NBBSS | N_EXT: | |
2865 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
2866 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); | |
2867 | goto record_it; | |
2868 | ||
2869 | case N_ABS | N_EXT: | |
2870 | record_it: | |
2871 | continue; | |
2872 | ||
2873 | /* Standard, local, non-debugger, symbols */ | |
2874 | ||
2875 | case N_NBTEXT: | |
2876 | ||
2877 | /* We need to be able to deal with both N_FN or N_TEXT, | |
2878 | because we have no way of knowing whether the sys-supplied ld | |
2879 | or GNU ld was used to make the executable. Sequents throw | |
2880 | in another wrinkle -- they renumbered N_FN. */ | |
2881 | ||
2882 | case N_FN: | |
2883 | case N_FN_SEQ: | |
2884 | case N_TEXT: | |
2885 | continue; | |
2886 | ||
2887 | case N_DATA: | |
2888 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2889 | goto record_it; | |
2890 | ||
2891 | case N_UNDF | N_EXT: | |
2892 | continue; /* Just undefined, not COMMON */ | |
2893 | ||
2894 | case N_UNDF: | |
2895 | continue; | |
2896 | ||
2897 | /* Lots of symbol types we can just ignore. */ | |
2898 | ||
2899 | case N_ABS: | |
2900 | case N_NBDATA: | |
2901 | case N_NBBSS: | |
2902 | continue; | |
2903 | ||
2904 | /* Keep going . . . */ | |
2905 | ||
2906 | /* | |
2907 | * Special symbol types for GNU | |
2908 | */ | |
2909 | case N_INDR: | |
2910 | case N_INDR | N_EXT: | |
2911 | case N_SETA: | |
2912 | case N_SETA | N_EXT: | |
2913 | case N_SETT: | |
2914 | case N_SETT | N_EXT: | |
2915 | case N_SETD: | |
2916 | case N_SETD | N_EXT: | |
2917 | case N_SETB: | |
2918 | case N_SETB | N_EXT: | |
2919 | case N_SETV: | |
2920 | continue; | |
2921 | ||
2922 | /* | |
2923 | * Debugger symbols | |
2924 | */ | |
2925 | ||
2926 | case N_SO: | |
2927 | { | |
2928 | CORE_ADDR valu; | |
2929 | static int prev_so_symnum = -10; | |
2930 | static int first_so_symnum; | |
2931 | char *p; | |
2932 | int prev_textlow_not_set; | |
2933 | ||
2934 | valu = sh.value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2935 | ||
2936 | prev_textlow_not_set = textlow_not_set; | |
2937 | ||
d3119d1e EZ |
2938 | /* A zero value is probably an indication for the SunPRO 3.0 |
2939 | compiler. end_psymtab explicitly tests for zero, so | |
2940 | don't relocate it. */ | |
2941 | ||
203c3895 | 2942 | if (sh.value == 0 |
5e2b427d | 2943 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
d3119d1e EZ |
2944 | { |
2945 | textlow_not_set = 1; | |
2946 | valu = 0; | |
2947 | } | |
2948 | else | |
2949 | textlow_not_set = 0; | |
203c3895 | 2950 | |
d3119d1e EZ |
2951 | past_first_source_file = 1; |
2952 | ||
2953 | if (prev_so_symnum != symnum - 1) | |
2954 | { /* Here if prev stab wasn't N_SO */ | |
2955 | first_so_symnum = symnum; | |
2956 | ||
2957 | if (pst) | |
2958 | { | |
2959 | pst = (struct partial_symtab *) 0; | |
2960 | includes_used = 0; | |
2961 | dependencies_used = 0; | |
2962 | } | |
2963 | } | |
2964 | ||
2965 | prev_so_symnum = symnum; | |
c906108c | 2966 | |
d3119d1e EZ |
2967 | /* End the current partial symtab and start a new one */ |
2968 | ||
2969 | /* SET_NAMESTRING ();*/ | |
2970 | namestring = stabstring; | |
2971 | ||
2972 | /* Null name means end of .o file. Don't start a new one. */ | |
2973 | if (*namestring == '\000') | |
2974 | continue; | |
2975 | ||
2976 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
2977 | The first one is a directory name; the second the file name. | |
2978 | If pst exists, is empty, and has a filename ending in '/', | |
2979 | we assume the previous N_SO was a directory name. */ | |
2980 | ||
2981 | p = strrchr (namestring, '/'); | |
2982 | if (p && *(p + 1) == '\000') | |
2983 | continue; /* Simply ignore directory name SOs */ | |
2984 | ||
2985 | /* Some other compilers (C++ ones in particular) emit useless | |
2986 | SOs for non-existant .c files. We ignore all subsequent SOs that | |
2987 | immediately follow the first. */ | |
2988 | ||
2989 | if (!pst) | |
2990 | pst = save_pst; | |
2991 | continue; | |
2992 | } | |
2993 | ||
2994 | case N_BINCL: | |
2995 | continue; | |
2996 | ||
2997 | case N_SOL: | |
2998 | { | |
2999 | enum language tmp_language; | |
3000 | /* Mark down an include file in the current psymtab */ | |
3001 | ||
3002 | /* SET_NAMESTRING ();*/ | |
3003 | namestring = stabstring; | |
3004 | ||
3005 | tmp_language = deduce_language_from_filename (namestring); | |
3006 | ||
3007 | /* Only change the psymtab's language if we've learned | |
3008 | something useful (eg. tmp_language is not language_unknown). | |
3009 | In addition, to match what start_subfile does, never change | |
3010 | from C++ to C. */ | |
3011 | if (tmp_language != language_unknown | |
3012 | && (tmp_language != language_c | |
3013 | || psymtab_language != language_cplus)) | |
3014 | psymtab_language = tmp_language; | |
3015 | ||
3016 | /* In C++, one may expect the same filename to come round many | |
3017 | times, when code is coming alternately from the main file | |
3018 | and from inline functions in other files. So I check to see | |
3019 | if this is a file we've seen before -- either the main | |
3020 | source file, or a previously included file. | |
3021 | ||
3022 | This seems to be a lot of time to be spending on N_SOL, but | |
3023 | things like "break c-exp.y:435" need to work (I | |
3024 | suppose the psymtab_include_list could be hashed or put | |
3025 | in a binary tree, if profiling shows this is a major hog). */ | |
ee300cd4 | 3026 | if (pst && strcmp (namestring, pst->filename) == 0) |
d3119d1e EZ |
3027 | continue; |
3028 | { | |
aa1ee363 | 3029 | int i; |
d3119d1e | 3030 | for (i = 0; i < includes_used; i++) |
ee300cd4 AC |
3031 | if (strcmp (namestring, |
3032 | psymtab_include_list[i]) == 0) | |
d3119d1e EZ |
3033 | { |
3034 | i = -1; | |
3035 | break; | |
3036 | } | |
3037 | if (i == -1) | |
3038 | continue; | |
3039 | } | |
3040 | ||
3041 | psymtab_include_list[includes_used++] = namestring; | |
3042 | if (includes_used >= includes_allocated) | |
3043 | { | |
3044 | char **orig = psymtab_include_list; | |
3045 | ||
3046 | psymtab_include_list = (char **) | |
3047 | alloca ((includes_allocated *= 2) * | |
3048 | sizeof (char *)); | |
4efb68b1 | 3049 | memcpy (psymtab_include_list, orig, |
d3119d1e EZ |
3050 | includes_used * sizeof (char *)); |
3051 | } | |
3052 | continue; | |
3053 | } | |
3054 | case N_LSYM: /* Typedef or automatic variable. */ | |
3055 | case N_STSYM: /* Data seg var -- static */ | |
3056 | case N_LCSYM: /* BSS " */ | |
3057 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
3058 | case N_NBSTS: /* Gould nobase. */ | |
3059 | case N_NBLCS: /* symbols. */ | |
3060 | case N_FUN: | |
3061 | case N_GSYM: /* Global (extern) variable; can be | |
3062 | data or bss (sigh FIXME). */ | |
3063 | ||
3064 | /* Following may probably be ignored; I'll leave them here | |
3065 | for now (until I do Pascal and Modula 2 extensions). */ | |
3066 | ||
3067 | case N_PC: /* I may or may not need this; I | |
3068 | suspect not. */ | |
3069 | case N_M2C: /* I suspect that I can ignore this here. */ | |
3070 | case N_SCOPE: /* Same. */ | |
3071 | ||
3072 | /* SET_NAMESTRING ();*/ | |
3073 | namestring = stabstring; | |
3074 | p = (char *) strchr (namestring, ':'); | |
3075 | if (!p) | |
3076 | continue; /* Not a debugging symbol. */ | |
3077 | ||
3078 | ||
3079 | ||
3080 | /* Main processing section for debugging symbols which | |
3081 | the initial read through the symbol tables needs to worry | |
3082 | about. If we reach this point, the symbol which we are | |
3083 | considering is definitely one we are interested in. | |
3084 | p must also contain the (valid) index into the namestring | |
3085 | which indicates the debugging type symbol. */ | |
3086 | ||
3087 | switch (p[1]) | |
3088 | { | |
3089 | case 'S': | |
3090 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
149ad273 | 3091 | |
5e2b427d | 3092 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 3093 | namestring = gdbarch_static_transform_name |
5e2b427d | 3094 | (gdbarch, namestring); |
149ad273 | 3095 | |
04a679b8 | 3096 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3097 | VAR_DOMAIN, LOC_STATIC, |
d3119d1e EZ |
3098 | &objfile->static_psymbols, |
3099 | 0, sh.value, | |
3100 | psymtab_language, objfile); | |
3101 | continue; | |
3102 | case 'G': | |
3103 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
3104 | /* The addresses in these entries are reported to be | |
3105 | wrong. See the code that reads 'G's for symtabs. */ | |
04a679b8 | 3106 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3107 | VAR_DOMAIN, LOC_STATIC, |
d3119d1e EZ |
3108 | &objfile->global_psymbols, |
3109 | 0, sh.value, | |
3110 | psymtab_language, objfile); | |
3111 | continue; | |
3112 | ||
3113 | case 'T': | |
3114 | /* When a 'T' entry is defining an anonymous enum, it | |
3115 | may have a name which is the empty string, or a | |
3116 | single space. Since they're not really defining a | |
3117 | symbol, those shouldn't go in the partial symbol | |
3118 | table. We do pick up the elements of such enums at | |
3119 | 'check_enum:', below. */ | |
3120 | if (p >= namestring + 2 | |
3121 | || (p == namestring + 1 | |
3122 | && namestring[0] != ' ')) | |
3123 | { | |
04a679b8 | 3124 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3125 | STRUCT_DOMAIN, LOC_TYPEDEF, |
d3119d1e EZ |
3126 | &objfile->static_psymbols, |
3127 | sh.value, 0, | |
3128 | psymtab_language, objfile); | |
3129 | if (p[2] == 't') | |
3130 | { | |
3131 | /* Also a typedef with the same name. */ | |
3132 | add_psymbol_to_list (namestring, p - namestring, | |
04a679b8 | 3133 | 1, |
176620f1 | 3134 | VAR_DOMAIN, LOC_TYPEDEF, |
d3119d1e EZ |
3135 | &objfile->static_psymbols, |
3136 | sh.value, 0, | |
3137 | psymtab_language, objfile); | |
3138 | p += 1; | |
3139 | } | |
d3119d1e EZ |
3140 | } |
3141 | goto check_enum; | |
3142 | case 't': | |
3143 | if (p != namestring) /* a name is there, not just :T... */ | |
3144 | { | |
04a679b8 | 3145 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3146 | VAR_DOMAIN, LOC_TYPEDEF, |
d3119d1e EZ |
3147 | &objfile->static_psymbols, |
3148 | sh.value, 0, | |
3149 | psymtab_language, objfile); | |
3150 | } | |
3151 | check_enum: | |
3152 | /* If this is an enumerated type, we need to | |
3153 | add all the enum constants to the partial symbol | |
3154 | table. This does not cover enums without names, e.g. | |
3155 | "enum {a, b} c;" in C, but fortunately those are | |
3156 | rare. There is no way for GDB to find those from the | |
3157 | enum type without spending too much time on it. Thus | |
3158 | to solve this problem, the compiler needs to put out the | |
3159 | enum in a nameless type. GCC2 does this. */ | |
3160 | ||
3161 | /* We are looking for something of the form | |
3162 | <name> ":" ("t" | "T") [<number> "="] "e" | |
3163 | {<constant> ":" <value> ","} ";". */ | |
3164 | ||
3165 | /* Skip over the colon and the 't' or 'T'. */ | |
3166 | p += 2; | |
3167 | /* This type may be given a number. Also, numbers can come | |
3168 | in pairs like (0,26). Skip over it. */ | |
3169 | while ((*p >= '0' && *p <= '9') | |
3170 | || *p == '(' || *p == ',' || *p == ')' | |
3171 | || *p == '=') | |
3172 | p++; | |
3173 | ||
3174 | if (*p++ == 'e') | |
3175 | { | |
3176 | /* The aix4 compiler emits extra crud before the members. */ | |
3177 | if (*p == '-') | |
3178 | { | |
3179 | /* Skip over the type (?). */ | |
3180 | while (*p != ':') | |
3181 | p++; | |
3182 | ||
3183 | /* Skip over the colon. */ | |
3184 | p++; | |
3185 | } | |
3186 | ||
3187 | /* We have found an enumerated type. */ | |
3188 | /* According to comments in read_enum_type | |
3189 | a comma could end it instead of a semicolon. | |
3190 | I don't know where that happens. | |
3191 | Accept either. */ | |
3192 | while (*p && *p != ';' && *p != ',') | |
3193 | { | |
3194 | char *q; | |
3195 | ||
3196 | /* Check for and handle cretinous dbx symbol name | |
3197 | continuation! */ | |
3198 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
3199 | p = next_symbol_text (objfile); | |
3200 | ||
3201 | /* Point to the character after the name | |
3202 | of the enum constant. */ | |
3203 | for (q = p; *q && *q != ':'; q++) | |
3204 | ; | |
3205 | /* Note that the value doesn't matter for | |
3206 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 3207 | add_psymbol_to_list (p, q - p, 1, |
176620f1 | 3208 | VAR_DOMAIN, LOC_CONST, |
d3119d1e EZ |
3209 | &objfile->static_psymbols, 0, |
3210 | 0, psymtab_language, objfile); | |
3211 | /* Point past the name. */ | |
3212 | p = q; | |
3213 | /* Skip over the value. */ | |
3214 | while (*p && *p != ',') | |
3215 | p++; | |
3216 | /* Advance past the comma. */ | |
3217 | if (*p) | |
3218 | p++; | |
3219 | } | |
3220 | } | |
3221 | continue; | |
3222 | case 'c': | |
3223 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 3224 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3225 | VAR_DOMAIN, LOC_CONST, |
d3119d1e EZ |
3226 | &objfile->static_psymbols, sh.value, |
3227 | 0, psymtab_language, objfile); | |
3228 | continue; | |
3229 | ||
3230 | case 'f': | |
3231 | if (! pst) | |
3232 | { | |
3233 | int name_len = p - namestring; | |
3234 | char *name = xmalloc (name_len + 1); | |
3235 | memcpy (name, namestring, name_len); | |
3236 | name[name_len] = '\0'; | |
23136709 | 3237 | function_outside_compilation_unit_complaint (name); |
d3119d1e EZ |
3238 | xfree (name); |
3239 | } | |
3240 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
04a679b8 | 3241 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3242 | VAR_DOMAIN, LOC_BLOCK, |
d3119d1e EZ |
3243 | &objfile->static_psymbols, |
3244 | 0, sh.value, | |
3245 | psymtab_language, objfile); | |
3246 | continue; | |
3247 | ||
3248 | /* Global functions were ignored here, but now they | |
3249 | are put into the global psymtab like one would expect. | |
3250 | They're also in the minimal symbol table. */ | |
3251 | case 'F': | |
3252 | if (! pst) | |
3253 | { | |
3254 | int name_len = p - namestring; | |
3255 | char *name = xmalloc (name_len + 1); | |
3256 | memcpy (name, namestring, name_len); | |
3257 | name[name_len] = '\0'; | |
23136709 | 3258 | function_outside_compilation_unit_complaint (name); |
d3119d1e EZ |
3259 | xfree (name); |
3260 | } | |
3261 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
04a679b8 | 3262 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3263 | VAR_DOMAIN, LOC_BLOCK, |
d3119d1e EZ |
3264 | &objfile->global_psymbols, |
3265 | 0, sh.value, | |
3266 | psymtab_language, objfile); | |
3267 | continue; | |
3268 | ||
3269 | /* Two things show up here (hopefully); static symbols of | |
3270 | local scope (static used inside braces) or extensions | |
3271 | of structure symbols. We can ignore both. */ | |
3272 | case 'V': | |
3273 | case '(': | |
3274 | case '0': | |
3275 | case '1': | |
3276 | case '2': | |
3277 | case '3': | |
3278 | case '4': | |
3279 | case '5': | |
3280 | case '6': | |
3281 | case '7': | |
3282 | case '8': | |
3283 | case '9': | |
3284 | case '-': | |
3285 | case '#': /* for symbol identification (used in live ranges) */ | |
d3119d1e EZ |
3286 | continue; |
3287 | ||
3288 | case ':': | |
3289 | /* It is a C++ nested symbol. We don't need to record it | |
3290 | (I don't think); if we try to look up foo::bar::baz, | |
3291 | then symbols for the symtab containing foo should get | |
3292 | read in, I think. */ | |
3293 | /* Someone says sun cc puts out symbols like | |
3294 | /foo/baz/maclib::/usr/local/bin/maclib, | |
3295 | which would get here with a symbol type of ':'. */ | |
3296 | continue; | |
3297 | ||
3298 | default: | |
3299 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
3300 | of a continued stab can show up here. The question is | |
3301 | whether they ever can mimic a normal stab--it would be | |
3302 | nice if not, since we certainly don't want to spend the | |
3303 | time searching to the end of every string looking for | |
3304 | a backslash. */ | |
3305 | ||
23136709 | 3306 | complaint (&symfile_complaints, |
e2e0b3e5 | 3307 | _("unknown symbol descriptor `%c'"), p[1]); |
d3119d1e EZ |
3308 | |
3309 | /* Ignore it; perhaps it is an extension that we don't | |
3310 | know about. */ | |
3311 | continue; | |
3312 | } | |
3313 | ||
3314 | case N_EXCL: | |
3315 | continue; | |
3316 | ||
3317 | case N_ENDM: | |
5afc051b JB |
3318 | /* Solaris 2 end of module, finish current partial |
3319 | symbol table. END_PSYMTAB will set | |
3320 | pst->texthigh to the proper value, which is | |
3321 | necessary if a module compiled without | |
3322 | debugging info follows this module. */ | |
203c3895 | 3323 | if (pst |
5e2b427d | 3324 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
d3119d1e EZ |
3325 | { |
3326 | pst = (struct partial_symtab *) 0; | |
3327 | includes_used = 0; | |
3328 | dependencies_used = 0; | |
3329 | } | |
d3119d1e EZ |
3330 | continue; |
3331 | ||
3332 | case N_RBRAC: | |
5afc051b JB |
3333 | if (sh.value > save_pst->texthigh) |
3334 | save_pst->texthigh = sh.value; | |
d3119d1e EZ |
3335 | continue; |
3336 | case N_EINCL: | |
3337 | case N_DSLINE: | |
3338 | case N_BSLINE: | |
3339 | case N_SSYM: /* Claim: Structure or union element. | |
3340 | Hopefully, I can ignore this. */ | |
3341 | case N_ENTRY: /* Alternate entry point; can ignore. */ | |
3342 | case N_MAIN: /* Can definitely ignore this. */ | |
3343 | case N_CATCH: /* These are GNU C++ extensions */ | |
3344 | case N_EHDECL: /* that can safely be ignored here. */ | |
3345 | case N_LENG: | |
3346 | case N_BCOMM: | |
3347 | case N_ECOMM: | |
3348 | case N_ECOML: | |
3349 | case N_FNAME: | |
3350 | case N_SLINE: | |
3351 | case N_RSYM: | |
3352 | case N_PSYM: | |
3353 | case N_LBRAC: | |
3354 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
3355 | case N_DEFD: /* GNU Modula-2 */ | |
3356 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
3357 | ||
3358 | case N_OBJ: /* useless types from Solaris */ | |
3359 | case N_OPT: | |
3360 | /* These symbols aren't interesting; don't worry about them */ | |
3361 | ||
3362 | continue; | |
3363 | ||
3364 | default: | |
3365 | /* If we haven't found it yet, ignore it. It's probably some | |
3366 | new type we don't know about yet. */ | |
e2e0b3e5 | 3367 | complaint (&symfile_complaints, _("unknown symbol type %s"), |
bb599908 | 3368 | hex_string (type_code)); /*CUR_SYMBOL_TYPE*/ |
d3119d1e EZ |
3369 | continue; |
3370 | } | |
c5aa993b | 3371 | if (stabstring |
c906108c | 3372 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
b8c9b27d | 3373 | xfree (stabstring); |
c906108c | 3374 | } |
c5aa993b | 3375 | /* end - Handle continuation */ |
c906108c SS |
3376 | } |
3377 | } | |
3378 | else | |
3379 | { | |
3380 | for (cur_sdx = 0; cur_sdx < fh->csym;) | |
3381 | { | |
3382 | char *name; | |
3383 | enum address_class class; | |
3384 | ||
3385 | (*swap_sym_in) (cur_bfd, | |
3386 | ((char *) debug_info->external_sym | |
3387 | + ((fh->isymBase + cur_sdx) | |
3388 | * external_sym_size)), | |
3389 | &sh); | |
3390 | ||
3391 | if (ECOFF_IS_STAB (&sh)) | |
3392 | { | |
3393 | cur_sdx++; | |
3394 | continue; | |
3395 | } | |
3396 | ||
3397 | /* Non absolute static symbols go into the minimal table. */ | |
c5aa993b | 3398 | if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil |
c906108c SS |
3399 | || (sh.index == indexNil |
3400 | && (sh.st != stStatic || sh.sc == scAbs))) | |
3401 | { | |
3402 | /* FIXME, premature? */ | |
3403 | cur_sdx++; | |
3404 | continue; | |
3405 | } | |
3406 | ||
3407 | name = debug_info->ss + fh->issBase + sh.iss; | |
3408 | ||
3409 | switch (sh.sc) | |
3410 | { | |
3411 | case scText: | |
3412 | case scRConst: | |
3413 | /* The value of a stEnd symbol is the displacement from the | |
3414 | corresponding start symbol value, do not relocate it. */ | |
3415 | if (sh.st != stEnd) | |
b8fbeb18 | 3416 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3417 | break; |
3418 | case scData: | |
3419 | case scSData: | |
3420 | case scRData: | |
3421 | case scPData: | |
3422 | case scXData: | |
b8fbeb18 | 3423 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3424 | break; |
3425 | case scBss: | |
3426 | case scSBss: | |
b8fbeb18 | 3427 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3428 | break; |
3429 | } | |
3430 | ||
3431 | switch (sh.st) | |
3432 | { | |
3433 | CORE_ADDR high; | |
3434 | CORE_ADDR procaddr; | |
3435 | int new_sdx; | |
3436 | ||
3437 | case stStaticProc: | |
3438 | prim_record_minimal_symbol_and_info (name, sh.value, | |
b887350f | 3439 | mst_file_text, |
b8fbeb18 | 3440 | SECT_OFF_TEXT (objfile), NULL, |
c906108c SS |
3441 | objfile); |
3442 | ||
3443 | /* FALLTHROUGH */ | |
3444 | ||
3445 | case stProc: | |
1fb4c65b JB |
3446 | /* Ignore all parameter symbol records. */ |
3447 | if (sh.index >= hdr->iauxMax) | |
3448 | { | |
3449 | /* Should not happen, but does when cross-compiling | |
3450 | with the MIPS compiler. FIXME -- pull later. */ | |
3451 | index_complaint (name); | |
3452 | new_sdx = cur_sdx + 1; /* Don't skip at all */ | |
3453 | } | |
3454 | else | |
3455 | new_sdx = AUX_GET_ISYM (fh->fBigendian, | |
3456 | (debug_info->external_aux | |
3457 | + fh->iauxBase | |
3458 | + sh.index)); | |
3459 | ||
3460 | if (new_sdx <= cur_sdx) | |
3461 | { | |
3462 | /* This should not happen either... FIXME. */ | |
3463 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3464 | _("bad proc end in aux found from symbol %s"), |
1fb4c65b JB |
3465 | name); |
3466 | new_sdx = cur_sdx + 1; /* Don't skip backward */ | |
3467 | } | |
3468 | ||
3469 | /* For stProc symbol records, we need to check the | |
3470 | storage class as well, as only (stProc, scText) | |
3471 | entries represent "real" procedures - See the | |
3472 | Compaq document titled "Object File / Symbol Table | |
3473 | Format Specification" for more information. If the | |
3474 | storage class is not scText, we discard the whole | |
3475 | block of symbol records for this stProc. */ | |
3476 | if (sh.st == stProc && sh.sc != scText) | |
3477 | goto skip; | |
3478 | ||
c906108c SS |
3479 | /* Usually there is a local and a global stProc symbol |
3480 | for a function. This means that the function name | |
3481 | has already been entered into the mimimal symbol table | |
3482 | while processing the global symbols in pass 2 above. | |
3483 | One notable exception is the PROGRAM name from | |
3484 | f77 compiled executables, it is only put out as | |
3485 | local stProc symbol, and a global MAIN__ stProc symbol | |
3486 | points to it. It doesn't matter though, as gdb is | |
3487 | still able to find the PROGRAM name via the partial | |
3488 | symbol table, and the MAIN__ symbol via the minimal | |
3489 | symbol table. */ | |
3490 | if (sh.st == stProc) | |
04a679b8 | 3491 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3492 | VAR_DOMAIN, LOC_BLOCK, |
c906108c | 3493 | &objfile->global_psymbols, |
c5aa993b | 3494 | 0, sh.value, psymtab_language, objfile); |
c906108c | 3495 | else |
04a679b8 | 3496 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3497 | VAR_DOMAIN, LOC_BLOCK, |
c906108c | 3498 | &objfile->static_psymbols, |
c5aa993b | 3499 | 0, sh.value, psymtab_language, objfile); |
c906108c | 3500 | |
c906108c SS |
3501 | procaddr = sh.value; |
3502 | ||
c906108c SS |
3503 | cur_sdx = new_sdx; |
3504 | (*swap_sym_in) (cur_bfd, | |
3505 | ((char *) debug_info->external_sym | |
3506 | + ((fh->isymBase + cur_sdx - 1) | |
3507 | * external_sym_size)), | |
3508 | &sh); | |
3509 | if (sh.st != stEnd) | |
3510 | continue; | |
3511 | ||
3512 | /* Kludge for Irix 5.2 zero fh->adr. */ | |
3513 | if (!relocatable | |
5afc051b JB |
3514 | && (pst->textlow == 0 || procaddr < pst->textlow)) |
3515 | pst->textlow = procaddr; | |
c906108c SS |
3516 | |
3517 | high = procaddr + sh.value; | |
5afc051b JB |
3518 | if (high > pst->texthigh) |
3519 | pst->texthigh = high; | |
c906108c SS |
3520 | continue; |
3521 | ||
3522 | case stStatic: /* Variable */ | |
c5aa993b | 3523 | if (SC_IS_DATA (sh.sc)) |
c906108c | 3524 | prim_record_minimal_symbol_and_info (name, sh.value, |
b887350f | 3525 | mst_file_data, |
b8fbeb18 | 3526 | SECT_OFF_DATA (objfile), |
c906108c SS |
3527 | NULL, |
3528 | objfile); | |
3529 | else | |
3530 | prim_record_minimal_symbol_and_info (name, sh.value, | |
b887350f | 3531 | mst_file_bss, |
b8fbeb18 | 3532 | SECT_OFF_BSS (objfile), |
c906108c SS |
3533 | NULL, |
3534 | objfile); | |
3535 | class = LOC_STATIC; | |
3536 | break; | |
3537 | ||
c5aa993b | 3538 | case stIndirect: /* Irix5 forward declaration */ |
c906108c SS |
3539 | /* Skip forward declarations from Irix5 cc */ |
3540 | goto skip; | |
3541 | ||
c5aa993b | 3542 | case stTypedef: /* Typedef */ |
c906108c SS |
3543 | /* Skip typedefs for forward declarations and opaque |
3544 | structs from alpha and mips cc. */ | |
3545 | if (sh.iss == 0 || has_opaque_xref (fh, &sh)) | |
3546 | goto skip; | |
3547 | class = LOC_TYPEDEF; | |
3548 | break; | |
3549 | ||
3550 | case stConstant: /* Constant decl */ | |
3551 | class = LOC_CONST; | |
3552 | break; | |
3553 | ||
3554 | case stUnion: | |
3555 | case stStruct: | |
3556 | case stEnum: | |
c5aa993b | 3557 | case stBlock: /* { }, str, un, enum */ |
c906108c SS |
3558 | /* Do not create a partial symbol for cc unnamed aggregates |
3559 | and gcc empty aggregates. */ | |
3560 | if ((sh.sc == scInfo | |
c5aa993b | 3561 | || SC_IS_COMMON (sh.sc)) |
c906108c SS |
3562 | && sh.iss != 0 |
3563 | && sh.index != cur_sdx + 2) | |
3564 | { | |
04a679b8 | 3565 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3566 | STRUCT_DOMAIN, LOC_TYPEDEF, |
c906108c SS |
3567 | &objfile->static_psymbols, |
3568 | 0, (CORE_ADDR) 0, | |
3569 | psymtab_language, objfile); | |
3570 | } | |
3571 | handle_psymbol_enumerators (objfile, fh, sh.st, sh.value); | |
3572 | ||
3573 | /* Skip over the block */ | |
3574 | new_sdx = sh.index; | |
3575 | if (new_sdx <= cur_sdx) | |
3576 | { | |
3577 | /* This happens with the Ultrix kernel. */ | |
23136709 | 3578 | complaint (&symfile_complaints, |
e2e0b3e5 | 3579 | _("bad aux index at block symbol %s"), name); |
c906108c SS |
3580 | new_sdx = cur_sdx + 1; /* Don't skip backward */ |
3581 | } | |
3582 | cur_sdx = new_sdx; | |
3583 | continue; | |
3584 | ||
3585 | case stFile: /* File headers */ | |
3586 | case stLabel: /* Labels */ | |
3587 | case stEnd: /* Ends of files */ | |
3588 | goto skip; | |
3589 | ||
3590 | case stLocal: /* Local variables */ | |
3591 | /* Normally these are skipped because we skip over | |
3592 | all blocks we see. However, these can occur | |
3593 | as visible symbols in a .h file that contains code. */ | |
3594 | goto skip; | |
3595 | ||
3596 | default: | |
3597 | /* Both complaints are valid: one gives symbol name, | |
3598 | the other the offending symbol type. */ | |
e2e0b3e5 | 3599 | complaint (&symfile_complaints, _("unknown local symbol %s"), |
23136709 | 3600 | name); |
e2e0b3e5 | 3601 | complaint (&symfile_complaints, _("with type %d"), sh.st); |
c906108c SS |
3602 | cur_sdx++; |
3603 | continue; | |
3604 | } | |
3605 | /* Use this gdb symbol */ | |
04a679b8 | 3606 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3607 | VAR_DOMAIN, class, |
c906108c SS |
3608 | &objfile->static_psymbols, |
3609 | 0, sh.value, psymtab_language, objfile); | |
3610 | skip: | |
3611 | cur_sdx++; /* Go to next file symbol */ | |
3612 | } | |
3613 | ||
3614 | /* Now do enter the external symbols. */ | |
3615 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; | |
3616 | cur_sdx = fdr_to_pst[f_idx].n_globals; | |
3617 | PST_PRIVATE (save_pst)->extern_count = cur_sdx; | |
3618 | PST_PRIVATE (save_pst)->extern_tab = ext_ptr; | |
3619 | for (; --cur_sdx >= 0; ext_ptr++) | |
3620 | { | |
3621 | enum address_class class; | |
3622 | SYMR *psh; | |
3623 | char *name; | |
3624 | CORE_ADDR svalue; | |
3625 | ||
3626 | if (ext_ptr->ifd != f_idx) | |
e2e0b3e5 | 3627 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
3628 | psh = &ext_ptr->asym; |
3629 | ||
3630 | /* Do not add undefined symbols to the partial symbol table. */ | |
c5aa993b | 3631 | if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil) |
c906108c SS |
3632 | continue; |
3633 | ||
3634 | svalue = psh->value; | |
3635 | switch (psh->sc) | |
3636 | { | |
3637 | case scText: | |
3638 | case scRConst: | |
b8fbeb18 | 3639 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3640 | break; |
3641 | case scData: | |
3642 | case scSData: | |
3643 | case scRData: | |
3644 | case scPData: | |
3645 | case scXData: | |
b8fbeb18 | 3646 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3647 | break; |
3648 | case scBss: | |
3649 | case scSBss: | |
b8fbeb18 | 3650 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3651 | break; |
3652 | } | |
3653 | ||
3654 | switch (psh->st) | |
3655 | { | |
3656 | case stNil: | |
3657 | /* These are generated for static symbols in .o files, | |
3658 | ignore them. */ | |
3659 | continue; | |
3660 | case stProc: | |
3661 | case stStaticProc: | |
3662 | /* External procedure symbols have been entered | |
3663 | into the minimal symbol table in pass 2 above. | |
3664 | Ignore them, as parse_external will ignore them too. */ | |
3665 | continue; | |
3666 | case stLabel: | |
3667 | class = LOC_LABEL; | |
3668 | break; | |
3669 | default: | |
23136709 | 3670 | unknown_ext_complaint (debug_info->ssext + psh->iss); |
c906108c SS |
3671 | /* Fall through, pretend it's global. */ |
3672 | case stGlobal: | |
3673 | /* Global common symbols are resolved by the runtime loader, | |
3674 | ignore them. */ | |
c5aa993b | 3675 | if (SC_IS_COMMON (psh->sc)) |
c906108c SS |
3676 | continue; |
3677 | ||
3678 | class = LOC_STATIC; | |
3679 | break; | |
3680 | } | |
3681 | name = debug_info->ssext + psh->iss; | |
04a679b8 | 3682 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3683 | VAR_DOMAIN, class, |
c906108c SS |
3684 | &objfile->global_psymbols, |
3685 | 0, svalue, | |
3686 | psymtab_language, objfile); | |
3687 | } | |
3688 | } | |
3689 | ||
3690 | /* Link pst to FDR. end_psymtab returns NULL if the psymtab was | |
c5aa993b | 3691 | empty and put on the free list. */ |
c906108c | 3692 | fdr_to_pst[f_idx].pst = end_psymtab (save_pst, |
c5aa993b | 3693 | psymtab_include_list, includes_used, |
5afc051b | 3694 | -1, save_pst->texthigh, |
c5aa993b | 3695 | dependency_list, dependencies_used, textlow_not_set); |
c906108c SS |
3696 | includes_used = 0; |
3697 | dependencies_used = 0; | |
3698 | ||
c906108c | 3699 | /* The objfile has its functions reordered if this partial symbol |
c5aa993b JM |
3700 | table overlaps any other partial symbol table. |
3701 | We cannot assume a reordered objfile if a partial symbol table | |
3702 | is contained within another partial symbol table, as partial symbol | |
3703 | tables for include files with executable code are contained | |
3704 | within the partial symbol table for the including source file, | |
3705 | and we do not want to flag the objfile reordered for these cases. | |
3706 | ||
3707 | This strategy works well for Irix-5.2 shared libraries, but we | |
3708 | might have to use a more elaborate (and slower) algorithm for | |
3709 | other cases. */ | |
c906108c SS |
3710 | save_pst = fdr_to_pst[f_idx].pst; |
3711 | if (save_pst != NULL | |
5afc051b | 3712 | && save_pst->textlow != 0 |
c906108c SS |
3713 | && !(objfile->flags & OBJF_REORDERED)) |
3714 | { | |
3715 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
c5aa993b JM |
3716 | { |
3717 | if (save_pst != pst | |
5afc051b JB |
3718 | && save_pst->textlow >= pst->textlow |
3719 | && save_pst->textlow < pst->texthigh | |
3720 | && save_pst->texthigh > pst->texthigh) | |
c5aa993b JM |
3721 | { |
3722 | objfile->flags |= OBJF_REORDERED; | |
3723 | break; | |
3724 | } | |
3725 | } | |
c906108c SS |
3726 | } |
3727 | } | |
3728 | ||
3729 | /* Now scan the FDRs for dependencies */ | |
3730 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) | |
3731 | { | |
3732 | fh = f_idx + debug_info->fdr; | |
3733 | pst = fdr_to_pst[f_idx].pst; | |
3734 | ||
c5aa993b | 3735 | if (pst == (struct partial_symtab *) NULL) |
c906108c SS |
3736 | continue; |
3737 | ||
3738 | /* This should catch stabs-in-ecoff. */ | |
3739 | if (fh->crfd <= 1) | |
3740 | continue; | |
3741 | ||
3742 | /* Skip the first file indirect entry as it is a self dependency | |
c5aa993b | 3743 | for source files or a reverse .h -> .c dependency for header files. */ |
c906108c SS |
3744 | pst->number_of_dependencies = 0; |
3745 | pst->dependencies = | |
3746 | ((struct partial_symtab **) | |
8b92e4d5 | 3747 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
3748 | ((fh->crfd - 1) |
3749 | * sizeof (struct partial_symtab *)))); | |
3750 | for (s_idx = 1; s_idx < fh->crfd; s_idx++) | |
3751 | { | |
3752 | RFDT rh; | |
3753 | ||
3754 | (*swap_rfd_in) (cur_bfd, | |
3755 | ((char *) debug_info->external_rfd | |
3756 | + (fh->rfdBase + s_idx) * external_rfd_size), | |
3757 | &rh); | |
3758 | if (rh < 0 || rh >= hdr->ifdMax) | |
3759 | { | |
e2e0b3e5 | 3760 | complaint (&symfile_complaints, _("bad file number %ld"), rh); |
c906108c SS |
3761 | continue; |
3762 | } | |
3763 | ||
3764 | /* Skip self dependencies of header files. */ | |
3765 | if (rh == f_idx) | |
3766 | continue; | |
3767 | ||
3768 | /* Do not add to dependeny list if psymtab was empty. */ | |
c5aa993b | 3769 | if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL) |
c906108c SS |
3770 | continue; |
3771 | pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst; | |
3772 | } | |
3773 | } | |
3774 | ||
3775 | /* Remove the dummy psymtab created for -O3 images above, if it is | |
3776 | still empty, to enable the detection of stripped executables. */ | |
3777 | if (objfile->psymtabs->next == NULL | |
3778 | && objfile->psymtabs->number_of_dependencies == 0 | |
3779 | && objfile->psymtabs->n_global_syms == 0 | |
3780 | && objfile->psymtabs->n_static_syms == 0) | |
3781 | objfile->psymtabs = NULL; | |
3782 | do_cleanups (old_chain); | |
3783 | } | |
3784 | ||
3785 | /* If the current psymbol has an enumerated type, we need to add | |
3786 | all the the enum constants to the partial symbol table. */ | |
3787 | ||
3788 | static void | |
fba45db2 KB |
3789 | handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype, |
3790 | CORE_ADDR svalue) | |
c906108c SS |
3791 | { |
3792 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
12b9c64f | 3793 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c | 3794 | char *ext_sym = ((char *) debug_info->external_sym |
c5aa993b | 3795 | + ((fh->isymBase + cur_sdx + 1) * external_sym_size)); |
c906108c SS |
3796 | SYMR sh; |
3797 | TIR tir; | |
3798 | ||
3799 | switch (stype) | |
3800 | { | |
3801 | case stEnum: | |
3802 | break; | |
3803 | ||
3804 | case stBlock: | |
3805 | /* It is an enumerated type if the next symbol entry is a stMember | |
c5aa993b JM |
3806 | and its auxiliary index is indexNil or its auxiliary entry |
3807 | is a plain btNil or btVoid. | |
3808 | Alpha cc -migrate enums are recognized by a zero index and | |
3809 | a zero symbol value. | |
3810 | DU 4.0 cc enums are recognized by a member type of btEnum without | |
3811 | qualifiers and a zero symbol value. */ | |
c906108c SS |
3812 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); |
3813 | if (sh.st != stMember) | |
3814 | return; | |
3815 | ||
3816 | if (sh.index == indexNil | |
3817 | || (sh.index == 0 && svalue == 0)) | |
3818 | break; | |
3819 | (*debug_swap->swap_tir_in) (fh->fBigendian, | |
3820 | &(debug_info->external_aux | |
3821 | + fh->iauxBase + sh.index)->a_ti, | |
3822 | &tir); | |
3823 | if ((tir.bt != btNil | |
3824 | && tir.bt != btVoid | |
3825 | && (tir.bt != btEnum || svalue != 0)) | |
3826 | || tir.tq0 != tqNil) | |
3827 | return; | |
3828 | break; | |
3829 | ||
3830 | default: | |
3831 | return; | |
3832 | } | |
3833 | ||
3834 | for (;;) | |
3835 | { | |
3836 | char *name; | |
3837 | ||
3838 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); | |
3839 | if (sh.st != stMember) | |
3840 | break; | |
3841 | name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
3842 | ||
3843 | /* Note that the value doesn't matter for enum constants | |
c5aa993b | 3844 | in psymtabs, just in symtabs. */ |
04a679b8 | 3845 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3846 | VAR_DOMAIN, LOC_CONST, |
c906108c SS |
3847 | &objfile->static_psymbols, 0, |
3848 | (CORE_ADDR) 0, psymtab_language, objfile); | |
3849 | ext_sym += external_sym_size; | |
3850 | } | |
3851 | } | |
3852 | ||
0e7e8d51 KB |
3853 | /* Get the next symbol. OBJFILE is unused. */ |
3854 | ||
c906108c | 3855 | static char * |
0e7e8d51 | 3856 | mdebug_next_symbol_text (struct objfile *objfile) |
c906108c SS |
3857 | { |
3858 | SYMR sh; | |
3859 | ||
3860 | cur_sdx++; | |
3861 | (*debug_swap->swap_sym_in) (cur_bfd, | |
3862 | ((char *) debug_info->external_sym | |
3863 | + ((cur_fdr->isymBase + cur_sdx) | |
3864 | * debug_swap->external_sym_size)), | |
3865 | &sh); | |
3866 | return debug_info->ss + cur_fdr->issBase + sh.iss; | |
3867 | } | |
3868 | ||
3869 | /* Ancillary function to psymtab_to_symtab(). Does all the work | |
3870 | for turning the partial symtab PST into a symtab, recurring | |
3871 | first on all dependent psymtabs. The argument FILENAME is | |
3872 | only passed so we can see in debug stack traces what file | |
3873 | is being read. | |
3874 | ||
3875 | This function has a split personality, based on whether the | |
3876 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. | |
3877 | The flow of control and even the memory allocation differs. FIXME. */ | |
3878 | ||
3879 | static void | |
fba45db2 | 3880 | psymtab_to_symtab_1 (struct partial_symtab *pst, char *filename) |
c906108c SS |
3881 | { |
3882 | bfd_size_type external_sym_size; | |
3883 | bfd_size_type external_pdr_size; | |
12b9c64f AO |
3884 | void (*swap_sym_in) (bfd *, void *, SYMR *); |
3885 | void (*swap_pdr_in) (bfd *, void *, PDR *); | |
c906108c | 3886 | int i; |
16db6055 | 3887 | struct symtab *st = NULL; |
c906108c SS |
3888 | FDR *fh; |
3889 | struct linetable *lines; | |
3890 | CORE_ADDR lowest_pdr_addr = 0; | |
16db6055 | 3891 | int last_symtab_ended = 0; |
c906108c SS |
3892 | |
3893 | if (pst->readin) | |
3894 | return; | |
3895 | pst->readin = 1; | |
3896 | ||
3897 | /* Read in all partial symbtabs on which this one is dependent. | |
3898 | NOTE that we do have circular dependencies, sigh. We solved | |
3899 | that by setting pst->readin before this point. */ | |
3900 | ||
3901 | for (i = 0; i < pst->number_of_dependencies; i++) | |
3902 | if (!pst->dependencies[i]->readin) | |
3903 | { | |
3904 | /* Inform about additional files to be read in. */ | |
3905 | if (info_verbose) | |
3906 | { | |
3907 | fputs_filtered (" ", gdb_stdout); | |
3908 | wrap_here (""); | |
3909 | fputs_filtered ("and ", gdb_stdout); | |
3910 | wrap_here (""); | |
3911 | printf_filtered ("%s...", | |
3912 | pst->dependencies[i]->filename); | |
3913 | wrap_here (""); /* Flush output */ | |
3914 | gdb_flush (gdb_stdout); | |
3915 | } | |
3916 | /* We only pass the filename for debug purposes */ | |
3917 | psymtab_to_symtab_1 (pst->dependencies[i], | |
3918 | pst->dependencies[i]->filename); | |
3919 | } | |
3920 | ||
3921 | /* Do nothing if this is a dummy psymtab. */ | |
3922 | ||
3923 | if (pst->n_global_syms == 0 && pst->n_static_syms == 0 | |
5afc051b | 3924 | && pst->textlow == 0 && pst->texthigh == 0) |
c906108c SS |
3925 | return; |
3926 | ||
3927 | /* Now read the symbols for this symtab */ | |
3928 | ||
3929 | cur_bfd = CUR_BFD (pst); | |
3930 | debug_swap = DEBUG_SWAP (pst); | |
3931 | debug_info = DEBUG_INFO (pst); | |
3932 | pending_list = PENDING_LIST (pst); | |
3933 | external_sym_size = debug_swap->external_sym_size; | |
3934 | external_pdr_size = debug_swap->external_pdr_size; | |
3935 | swap_sym_in = debug_swap->swap_sym_in; | |
3936 | swap_pdr_in = debug_swap->swap_pdr_in; | |
3937 | current_objfile = pst->objfile; | |
3938 | cur_fd = FDR_IDX (pst); | |
3939 | fh = ((cur_fd == -1) | |
3940 | ? (FDR *) NULL | |
3941 | : debug_info->fdr + cur_fd); | |
3942 | cur_fdr = fh; | |
3943 | ||
3944 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ | |
3945 | processing_gcc_compilation = 0; | |
3946 | if (fh != (FDR *) NULL && fh->csym >= 2) | |
3947 | { | |
3948 | SYMR sh; | |
3949 | ||
3950 | (*swap_sym_in) (cur_bfd, | |
3951 | ((char *) debug_info->external_sym | |
3952 | + (fh->isymBase + 1) * external_sym_size), | |
3953 | &sh); | |
ee300cd4 AC |
3954 | if (strcmp (debug_info->ss + fh->issBase + sh.iss, |
3955 | stabs_symbol) == 0) | |
c906108c SS |
3956 | { |
3957 | /* We indicate that this is a GCC compilation so that certain | |
3958 | features will be enabled in stabsread/dbxread. */ | |
3959 | processing_gcc_compilation = 2; | |
3960 | } | |
3961 | } | |
3962 | ||
3963 | if (processing_gcc_compilation != 0) | |
3964 | { | |
fbf65064 | 3965 | struct gdbarch *gdbarch = get_objfile_arch (pst->objfile); |
c906108c SS |
3966 | |
3967 | /* This symbol table contains stabs-in-ecoff entries. */ | |
3968 | ||
3969 | /* Parse local symbols first */ | |
3970 | ||
3971 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */ | |
3972 | { | |
3973 | current_objfile = NULL; | |
3974 | return; | |
3975 | } | |
3976 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
3977 | { | |
3978 | SYMR sh; | |
3979 | char *name; | |
3980 | CORE_ADDR valu; | |
3981 | ||
3982 | (*swap_sym_in) (cur_bfd, | |
3983 | (((char *) debug_info->external_sym) | |
3984 | + (fh->isymBase + cur_sdx) * external_sym_size), | |
3985 | &sh); | |
3986 | name = debug_info->ss + fh->issBase + sh.iss; | |
3987 | valu = sh.value; | |
3988 | /* XXX This is a hack. It will go away! */ | |
3989 | if (ECOFF_IS_STAB (&sh) || (name[0] == '#')) | |
3990 | { | |
3991 | int type_code = ECOFF_UNMARK_STAB (sh.index); | |
3992 | ||
3993 | /* We should never get non N_STAB symbols here, but they | |
c5aa993b JM |
3994 | should be harmless, so keep process_one_symbol from |
3995 | complaining about them. */ | |
c906108c SS |
3996 | if (type_code & N_STAB) |
3997 | { | |
16db6055 EZ |
3998 | /* If we found a trailing N_SO with no name, process |
3999 | it here instead of in process_one_symbol, so we | |
4000 | can keep a handle to its symtab. The symtab | |
4001 | would otherwise be ended twice, once in | |
4002 | process_one_symbol, and once after this loop. */ | |
4003 | if (type_code == N_SO | |
4004 | && last_source_file | |
4005 | && previous_stab_code != (unsigned char) N_SO | |
4006 | && *name == '\000') | |
4007 | { | |
4008 | valu += ANOFFSET (pst->section_offsets, | |
4009 | SECT_OFF_TEXT (pst->objfile)); | |
4010 | previous_stab_code = N_SO; | |
4011 | st = end_symtab (valu, pst->objfile, | |
4012 | SECT_OFF_TEXT (pst->objfile)); | |
4013 | end_stabs (); | |
4014 | last_symtab_ended = 1; | |
4015 | } | |
4016 | else | |
4017 | { | |
4018 | last_symtab_ended = 0; | |
4019 | process_one_symbol (type_code, 0, valu, name, | |
4020 | pst->section_offsets, pst->objfile); | |
4021 | } | |
c906108c SS |
4022 | } |
4023 | /* Similarly a hack. */ | |
4024 | else if (name[0] == '#') | |
4025 | { | |
4026 | process_one_symbol (N_SLINE, 0, valu, name, | |
4027 | pst->section_offsets, pst->objfile); | |
4028 | } | |
4029 | if (type_code == N_FUN) | |
4030 | { | |
4031 | /* Make up special symbol to contain | |
4032 | procedure specific info */ | |
f92761ec AC |
4033 | struct mdebug_extra_func_info *e = |
4034 | ((struct mdebug_extra_func_info *) | |
4a146b47 | 4035 | obstack_alloc (¤t_objfile->objfile_obstack, |
f92761ec AC |
4036 | sizeof (struct mdebug_extra_func_info))); |
4037 | struct symbol *s = new_symbol (MDEBUG_EFI_SYMBOL_NAME); | |
c906108c | 4038 | |
f92761ec | 4039 | memset (e, 0, sizeof (struct mdebug_extra_func_info)); |
176620f1 | 4040 | SYMBOL_DOMAIN (s) = LABEL_DOMAIN; |
c906108c | 4041 | SYMBOL_CLASS (s) = LOC_CONST; |
46bf5051 | 4042 | SYMBOL_TYPE (s) = objfile_type (pst->objfile)->builtin_void; |
9918cab9 | 4043 | SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e; |
c906108c SS |
4044 | e->pdr.framereg = -1; |
4045 | add_symbol_to_list (s, &local_symbols); | |
4046 | } | |
4047 | } | |
4048 | else if (sh.st == stLabel) | |
4049 | { | |
4050 | if (sh.index == indexNil) | |
4051 | { | |
4052 | /* This is what the gcc2_compiled and __gnu_compiled_* | |
4053 | show up as. So don't complain. */ | |
4054 | ; | |
4055 | } | |
4056 | else | |
4057 | { | |
4058 | /* Handle encoded stab line number. */ | |
b8fbeb18 | 4059 | valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)); |
fbf65064 UW |
4060 | record_line (current_subfile, sh.index, |
4061 | gdbarch_addr_bits_remove (gdbarch, valu)); | |
c906108c SS |
4062 | } |
4063 | } | |
4064 | else if (sh.st == stProc || sh.st == stStaticProc | |
4065 | || sh.st == stStatic || sh.st == stEnd) | |
4066 | /* These are generated by gcc-2.x, do not complain */ | |
4067 | ; | |
4068 | else | |
e2e0b3e5 | 4069 | complaint (&symfile_complaints, _("unknown stabs symbol %s"), name); |
c906108c | 4070 | } |
16db6055 EZ |
4071 | |
4072 | if (! last_symtab_ended) | |
4073 | { | |
5afc051b | 4074 | st = end_symtab (pst->texthigh, pst->objfile, SECT_OFF_TEXT (pst->objfile)); |
16db6055 EZ |
4075 | end_stabs (); |
4076 | } | |
c906108c | 4077 | |
c906108c | 4078 | /* There used to be a call to sort_blocks here, but this should not |
c5aa993b JM |
4079 | be necessary for stabs symtabs. And as sort_blocks modifies the |
4080 | start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK, | |
4081 | it did the wrong thing if the first procedure in a file was | |
4082 | generated via asm statements. */ | |
c906108c SS |
4083 | |
4084 | /* Fill in procedure info next. */ | |
4085 | if (fh->cpd > 0) | |
4086 | { | |
4087 | PDR *pr_block; | |
4088 | struct cleanup *old_chain; | |
4089 | char *pdr_ptr; | |
4090 | char *pdr_end; | |
4091 | PDR *pdr_in; | |
4092 | PDR *pdr_in_end; | |
4093 | ||
4094 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
b8c9b27d | 4095 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4096 | |
4097 | pdr_ptr = ((char *) debug_info->external_pdr | |
4098 | + fh->ipdFirst * external_pdr_size); | |
4099 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4100 | pdr_in = pr_block; | |
4101 | for (; | |
4102 | pdr_ptr < pdr_end; | |
4103 | pdr_ptr += external_pdr_size, pdr_in++) | |
4104 | { | |
4105 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4106 | ||
4107 | /* Determine lowest PDR address, the PDRs are not always | |
c5aa993b | 4108 | sorted. */ |
c906108c SS |
4109 | if (pdr_in == pr_block) |
4110 | lowest_pdr_addr = pdr_in->adr; | |
4111 | else if (pdr_in->adr < lowest_pdr_addr) | |
4112 | lowest_pdr_addr = pdr_in->adr; | |
4113 | } | |
4114 | ||
4115 | pdr_in = pr_block; | |
4116 | pdr_in_end = pdr_in + fh->cpd; | |
4117 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4118 | parse_procedure (pdr_in, st, pst); | |
4119 | ||
4120 | do_cleanups (old_chain); | |
4121 | } | |
4122 | } | |
4123 | else | |
4124 | { | |
4125 | /* This symbol table contains ordinary ecoff entries. */ | |
4126 | ||
4127 | int f_max; | |
4128 | int maxlines; | |
4129 | EXTR *ext_ptr; | |
4130 | ||
c906108c SS |
4131 | if (fh == 0) |
4132 | { | |
4133 | maxlines = 0; | |
de4f826b | 4134 | st = new_symtab ("unknown", 0, pst->objfile); |
c906108c SS |
4135 | } |
4136 | else | |
4137 | { | |
c906108c | 4138 | maxlines = 2 * fh->cline; |
de4f826b | 4139 | st = new_symtab (pst->filename, maxlines, pst->objfile); |
c906108c SS |
4140 | |
4141 | /* The proper language was already determined when building | |
4142 | the psymtab, use it. */ | |
4143 | st->language = PST_PRIVATE (pst)->pst_language; | |
4144 | } | |
4145 | ||
4146 | psymtab_language = st->language; | |
4147 | ||
4148 | lines = LINETABLE (st); | |
4149 | ||
4150 | /* Get a new lexical context */ | |
4151 | ||
4152 | push_parse_stack (); | |
4153 | top_stack->cur_st = st; | |
4154 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st), | |
4155 | STATIC_BLOCK); | |
5afc051b | 4156 | BLOCK_START (top_stack->cur_block) = pst->textlow; |
c906108c SS |
4157 | BLOCK_END (top_stack->cur_block) = 0; |
4158 | top_stack->blocktype = stFile; | |
c906108c SS |
4159 | top_stack->cur_type = 0; |
4160 | top_stack->procadr = 0; | |
4161 | top_stack->numargs = 0; | |
4162 | found_ecoff_debugging_info = 0; | |
4163 | ||
4164 | if (fh) | |
4165 | { | |
4166 | char *sym_ptr; | |
4167 | char *sym_end; | |
4168 | ||
4169 | /* Parse local symbols first */ | |
4170 | sym_ptr = ((char *) debug_info->external_sym | |
4171 | + fh->isymBase * external_sym_size); | |
4172 | sym_end = sym_ptr + fh->csym * external_sym_size; | |
4173 | while (sym_ptr < sym_end) | |
4174 | { | |
4175 | SYMR sh; | |
4176 | int c; | |
4177 | ||
4178 | (*swap_sym_in) (cur_bfd, sym_ptr, &sh); | |
4179 | c = parse_symbol (&sh, | |
4180 | debug_info->external_aux + fh->iauxBase, | |
b8fbeb18 | 4181 | sym_ptr, fh->fBigendian, pst->section_offsets, pst->objfile); |
c906108c SS |
4182 | sym_ptr += c * external_sym_size; |
4183 | } | |
4184 | ||
4185 | /* Linenumbers. At the end, check if we can save memory. | |
4186 | parse_lines has to look ahead an arbitrary number of PDR | |
4187 | structures, so we swap them all first. */ | |
4188 | if (fh->cpd > 0) | |
4189 | { | |
4190 | PDR *pr_block; | |
4191 | struct cleanup *old_chain; | |
4192 | char *pdr_ptr; | |
4193 | char *pdr_end; | |
4194 | PDR *pdr_in; | |
4195 | PDR *pdr_in_end; | |
4196 | ||
4197 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
4198 | ||
b8c9b27d | 4199 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4200 | |
4201 | pdr_ptr = ((char *) debug_info->external_pdr | |
4202 | + fh->ipdFirst * external_pdr_size); | |
4203 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4204 | pdr_in = pr_block; | |
4205 | for (; | |
4206 | pdr_ptr < pdr_end; | |
4207 | pdr_ptr += external_pdr_size, pdr_in++) | |
4208 | { | |
4209 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4210 | ||
4211 | /* Determine lowest PDR address, the PDRs are not always | |
4212 | sorted. */ | |
4213 | if (pdr_in == pr_block) | |
4214 | lowest_pdr_addr = pdr_in->adr; | |
4215 | else if (pdr_in->adr < lowest_pdr_addr) | |
4216 | lowest_pdr_addr = pdr_in->adr; | |
4217 | } | |
4218 | ||
4219 | parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr); | |
4220 | if (lines->nitems < fh->cline) | |
4221 | lines = shrink_linetable (lines); | |
4222 | ||
4223 | /* Fill in procedure info next. */ | |
4224 | pdr_in = pr_block; | |
4225 | pdr_in_end = pdr_in + fh->cpd; | |
4226 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4227 | parse_procedure (pdr_in, 0, pst); | |
4228 | ||
4229 | do_cleanups (old_chain); | |
4230 | } | |
4231 | } | |
4232 | ||
4233 | LINETABLE (st) = lines; | |
4234 | ||
4235 | /* .. and our share of externals. | |
c5aa993b JM |
4236 | XXX use the global list to speed up things here. how? |
4237 | FIXME, Maybe quit once we have found the right number of ext's? */ | |
c906108c SS |
4238 | top_stack->cur_st = st; |
4239 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
4240 | GLOBAL_BLOCK); | |
4241 | top_stack->blocktype = stFile; | |
c906108c SS |
4242 | |
4243 | ext_ptr = PST_PRIVATE (pst)->extern_tab; | |
4244 | for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) | |
b8fbeb18 | 4245 | parse_external (ext_ptr, fh->fBigendian, pst->section_offsets, pst->objfile); |
c906108c SS |
4246 | |
4247 | /* If there are undefined symbols, tell the user. | |
c5aa993b JM |
4248 | The alpha has an undefined symbol for every symbol that is |
4249 | from a shared library, so tell the user only if verbose is on. */ | |
c906108c SS |
4250 | if (info_verbose && n_undef_symbols) |
4251 | { | |
a3f17187 | 4252 | printf_filtered (_("File %s contains %d unresolved references:"), |
c906108c SS |
4253 | st->filename, n_undef_symbols); |
4254 | printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n", | |
4255 | n_undef_vars, n_undef_procs, n_undef_labels); | |
4256 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; | |
4257 | ||
4258 | } | |
4259 | pop_parse_stack (); | |
4260 | ||
4261 | st->primary = 1; | |
4262 | ||
c906108c SS |
4263 | sort_blocks (st); |
4264 | } | |
4265 | ||
4266 | /* Now link the psymtab and the symtab. */ | |
4267 | pst->symtab = st; | |
4268 | ||
4269 | current_objfile = NULL; | |
4270 | } | |
4271 | \f | |
4272 | /* Ancillary parsing procedures. */ | |
4273 | ||
4274 | /* Return 1 if the symbol pointed to by SH has a cross reference | |
4275 | to an opaque aggregate type, else 0. */ | |
4276 | ||
4277 | static int | |
fba45db2 | 4278 | has_opaque_xref (FDR *fh, SYMR *sh) |
c906108c SS |
4279 | { |
4280 | TIR tir; | |
4281 | union aux_ext *ax; | |
4282 | RNDXR rn[1]; | |
4283 | unsigned int rf; | |
4284 | ||
4285 | if (sh->index == indexNil) | |
4286 | return 0; | |
4287 | ||
4288 | ax = debug_info->external_aux + fh->iauxBase + sh->index; | |
4289 | (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir); | |
4290 | if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum) | |
4291 | return 0; | |
4292 | ||
4293 | ax++; | |
4294 | (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn); | |
4295 | if (rn->rfd == 0xfff) | |
4296 | rf = AUX_GET_ISYM (fh->fBigendian, ax + 1); | |
4297 | else | |
4298 | rf = rn->rfd; | |
4299 | if (rf != -1) | |
4300 | return 0; | |
4301 | return 1; | |
4302 | } | |
4303 | ||
4304 | /* Lookup the type at relative index RN. Return it in TPP | |
4305 | if found and in any event come up with its name PNAME. | |
4306 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). | |
4307 | Return value says how many aux symbols we ate. */ | |
4308 | ||
4309 | static int | |
fba45db2 KB |
4310 | 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. */ |
4311 | char **pname, int bigend, char *sym_name) | |
c906108c SS |
4312 | { |
4313 | RNDXR rn[1]; | |
4314 | unsigned int rf; | |
4315 | int result = 1; | |
4316 | FDR *fh; | |
4317 | char *esh; | |
4318 | SYMR sh; | |
4319 | int xref_fd; | |
4320 | struct mdebug_pending *pend; | |
4321 | ||
c5aa993b | 4322 | *tpp = (struct type *) NULL; |
c906108c SS |
4323 | |
4324 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
4325 | ||
4326 | /* Escape index means 'the next one' */ | |
4327 | if (rn->rfd == 0xfff) | |
4328 | { | |
4329 | result++; | |
4330 | rf = AUX_GET_ISYM (bigend, ax + 1); | |
4331 | } | |
4332 | else | |
4333 | { | |
4334 | rf = rn->rfd; | |
4335 | } | |
4336 | ||
4337 | /* mips cc uses a rf of -1 for opaque struct definitions. | |
4338 | Set TYPE_FLAG_STUB for these types so that check_typedef will | |
4339 | resolve them if the struct gets defined in another compilation unit. */ | |
4340 | if (rf == -1) | |
4341 | { | |
4342 | *pname = "<undefined>"; | |
0b3d7c6d | 4343 | *tpp = init_type (type_code, 0, TYPE_FLAG_STUB, (char *) NULL, current_objfile); |
c906108c SS |
4344 | return result; |
4345 | } | |
4346 | ||
4347 | /* mips cc uses an escaped rn->index of 0 for struct return types | |
4348 | of procedures that were compiled without -g. These will always remain | |
4349 | undefined. */ | |
4350 | if (rn->rfd == 0xfff && rn->index == 0) | |
4351 | { | |
4352 | *pname = "<undefined>"; | |
4353 | return result; | |
4354 | } | |
4355 | ||
4356 | /* Find the relative file descriptor and the symbol in it. */ | |
4357 | fh = get_rfd (fd, rf); | |
4358 | xref_fd = fh - debug_info->fdr; | |
4359 | ||
4360 | if (rn->index >= fh->csym) | |
4361 | { | |
4362 | /* File indirect entry is corrupt. */ | |
4363 | *pname = "<illegal>"; | |
23136709 | 4364 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4365 | return result; |
4366 | } | |
4367 | ||
4368 | /* If we have processed this symbol then we left a forwarding | |
4369 | pointer to the type in the pending list. If not, we`ll put | |
4370 | it in a list of pending types, to be processed later when | |
4371 | the file will be. In any event, we collect the name for the | |
4372 | type here. */ | |
4373 | ||
4374 | esh = ((char *) debug_info->external_sym | |
4375 | + ((fh->isymBase + rn->index) | |
4376 | * debug_swap->external_sym_size)); | |
4377 | (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh); | |
4378 | ||
4379 | /* Make sure that this type of cross reference can be handled. */ | |
4380 | if ((sh.sc != scInfo | |
4381 | || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect | |
4382 | && sh.st != stStruct && sh.st != stUnion | |
4383 | && sh.st != stEnum)) | |
c5aa993b | 4384 | && (sh.st != stBlock || !SC_IS_COMMON (sh.sc))) |
c906108c SS |
4385 | { |
4386 | /* File indirect entry is corrupt. */ | |
4387 | *pname = "<illegal>"; | |
23136709 | 4388 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4389 | return result; |
4390 | } | |
4391 | ||
4392 | *pname = debug_info->ss + fh->issBase + sh.iss; | |
4393 | ||
4394 | pend = is_pending_symbol (fh, esh); | |
4395 | if (pend) | |
4396 | *tpp = pend->t; | |
4397 | else | |
4398 | { | |
4399 | /* We have not yet seen this type. */ | |
4400 | ||
4401 | if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect) | |
4402 | { | |
4403 | TIR tir; | |
4404 | ||
4405 | /* alpha cc puts out a stTypedef with a sh.iss of zero for | |
4406 | two cases: | |
4407 | a) forward declarations of structs/unions/enums which are not | |
c5aa993b JM |
4408 | defined in this compilation unit. |
4409 | For these the type will be void. This is a bad design decision | |
4410 | as cross referencing across compilation units is impossible | |
4411 | due to the missing name. | |
c906108c | 4412 | b) forward declarations of structs/unions/enums/typedefs which |
c5aa993b JM |
4413 | are defined later in this file or in another file in the same |
4414 | compilation unit. Irix5 cc uses a stIndirect symbol for this. | |
4415 | Simply cross reference those again to get the true type. | |
c906108c SS |
4416 | The forward references are not entered in the pending list and |
4417 | in the symbol table. */ | |
4418 | ||
4419 | (*debug_swap->swap_tir_in) (bigend, | |
4420 | &(debug_info->external_aux | |
4421 | + fh->iauxBase + sh.index)->a_ti, | |
4422 | &tir); | |
4423 | if (tir.tq0 != tqNil) | |
23136709 | 4424 | complaint (&symfile_complaints, |
e2e0b3e5 | 4425 | _("illegal tq0 in forward typedef for %s"), sym_name); |
c906108c SS |
4426 | switch (tir.bt) |
4427 | { | |
4428 | case btVoid: | |
4429 | *tpp = init_type (type_code, 0, 0, (char *) NULL, | |
4430 | current_objfile); | |
c5aa993b | 4431 | *pname = "<undefined>"; |
c906108c SS |
4432 | break; |
4433 | ||
4434 | case btStruct: | |
4435 | case btUnion: | |
4436 | case btEnum: | |
4437 | cross_ref (xref_fd, | |
4438 | (debug_info->external_aux | |
4439 | + fh->iauxBase + sh.index + 1), | |
4440 | tpp, type_code, pname, | |
4441 | fh->fBigendian, sym_name); | |
4442 | break; | |
4443 | ||
4444 | case btTypedef: | |
4445 | /* Follow a forward typedef. This might recursively | |
c5aa993b JM |
4446 | call cross_ref till we get a non typedef'ed type. |
4447 | FIXME: This is not correct behaviour, but gdb currently | |
4448 | cannot handle typedefs without type copying. Type | |
4449 | copying is impossible as we might have mutual forward | |
4450 | references between two files and the copied type would not | |
4451 | get filled in when we later parse its definition. */ | |
c906108c SS |
4452 | *tpp = parse_type (xref_fd, |
4453 | debug_info->external_aux + fh->iauxBase, | |
4454 | sh.index, | |
c5aa993b | 4455 | (int *) NULL, |
c906108c SS |
4456 | fh->fBigendian, |
4457 | debug_info->ss + fh->issBase + sh.iss); | |
4458 | add_pending (fh, esh, *tpp); | |
4459 | break; | |
4460 | ||
4461 | default: | |
23136709 | 4462 | complaint (&symfile_complaints, |
e2e0b3e5 | 4463 | _("illegal bt %d in forward typedef for %s"), tir.bt, |
23136709 | 4464 | sym_name); |
c906108c SS |
4465 | *tpp = init_type (type_code, 0, 0, (char *) NULL, |
4466 | current_objfile); | |
4467 | break; | |
4468 | } | |
4469 | return result; | |
4470 | } | |
4471 | else if (sh.st == stTypedef) | |
4472 | { | |
4473 | /* Parse the type for a normal typedef. This might recursively call | |
4474 | cross_ref till we get a non typedef'ed type. | |
4475 | FIXME: This is not correct behaviour, but gdb currently | |
4476 | cannot handle typedefs without type copying. But type copying is | |
4477 | impossible as we might have mutual forward references between | |
4478 | two files and the copied type would not get filled in when | |
4479 | we later parse its definition. */ | |
4480 | *tpp = parse_type (xref_fd, | |
4481 | debug_info->external_aux + fh->iauxBase, | |
4482 | sh.index, | |
c5aa993b | 4483 | (int *) NULL, |
c906108c SS |
4484 | fh->fBigendian, |
4485 | debug_info->ss + fh->issBase + sh.iss); | |
4486 | } | |
4487 | else | |
4488 | { | |
4489 | /* Cross reference to a struct/union/enum which is defined | |
4490 | in another file in the same compilation unit but that file | |
4491 | has not been parsed yet. | |
4492 | Initialize the type only, it will be filled in when | |
4493 | it's definition is parsed. */ | |
4494 | *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
4495 | } | |
4496 | add_pending (fh, esh, *tpp); | |
4497 | } | |
4498 | ||
4499 | /* We used one auxent normally, two if we got a "next one" rf. */ | |
4500 | return result; | |
4501 | } | |
4502 | ||
4503 | ||
4504 | /* Quick&dirty lookup procedure, to avoid the MI ones that require | |
4505 | keeping the symtab sorted */ | |
4506 | ||
4507 | static struct symbol * | |
aa1ee363 | 4508 | mylookup_symbol (char *name, struct block *block, |
176620f1 | 4509 | domain_enum domain, enum address_class class) |
c906108c | 4510 | { |
de4f826b DC |
4511 | struct dict_iterator iter; |
4512 | int inc; | |
e88c90f2 | 4513 | struct symbol *sym; |
c906108c | 4514 | |
c906108c | 4515 | inc = name[0]; |
de4f826b | 4516 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
c906108c | 4517 | { |
3567439c | 4518 | if (SYMBOL_LINKAGE_NAME (sym)[0] == inc |
176620f1 | 4519 | && SYMBOL_DOMAIN (sym) == domain |
c906108c | 4520 | && SYMBOL_CLASS (sym) == class |
3567439c | 4521 | && strcmp (SYMBOL_LINKAGE_NAME (sym), name) == 0) |
c906108c | 4522 | return sym; |
c906108c | 4523 | } |
e88c90f2 | 4524 | |
c906108c SS |
4525 | block = BLOCK_SUPERBLOCK (block); |
4526 | if (block) | |
176620f1 | 4527 | return mylookup_symbol (name, block, domain, class); |
c906108c SS |
4528 | return 0; |
4529 | } | |
4530 | ||
4531 | ||
de4f826b | 4532 | /* Add a new symbol S to a block B. */ |
c906108c SS |
4533 | |
4534 | static void | |
c7efd0b9 | 4535 | add_symbol (struct symbol *s, struct symtab *symtab, struct block *b) |
c906108c | 4536 | { |
c7efd0b9 | 4537 | SYMBOL_SYMTAB (s) = symtab; |
de4f826b | 4538 | dict_add_symbol (BLOCK_DICT (b), s); |
c906108c SS |
4539 | } |
4540 | ||
4541 | /* Add a new block B to a symtab S */ | |
4542 | ||
4543 | static void | |
fba45db2 | 4544 | add_block (struct block *b, struct symtab *s) |
c906108c SS |
4545 | { |
4546 | struct blockvector *bv = BLOCKVECTOR (s); | |
4547 | ||
12b9c64f | 4548 | bv = (struct blockvector *) xrealloc ((void *) bv, |
c906108c SS |
4549 | (sizeof (struct blockvector) |
4550 | + BLOCKVECTOR_NBLOCKS (bv) | |
4551 | * sizeof (bv->block))); | |
4552 | if (bv != BLOCKVECTOR (s)) | |
4553 | BLOCKVECTOR (s) = bv; | |
4554 | ||
4555 | BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b; | |
4556 | } | |
4557 | ||
4558 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. | |
4559 | MIPS' linenumber encoding might need more than one byte | |
4560 | to describe it, LAST is used to detect these continuation lines. | |
4561 | ||
4562 | Combining lines with the same line number seems like a bad idea. | |
4563 | E.g: There could be a line number entry with the same line number after the | |
4564 | prologue and GDB should not ignore it (this is a better way to find | |
4565 | a prologue than mips_skip_prologue). | |
4566 | But due to the compressed line table format there are line number entries | |
4567 | for the same line which are needed to bridge the gap to the next | |
4568 | line number entry. These entries have a bogus address info with them | |
4569 | and we are unable to tell them from intended duplicate line number | |
4570 | entries. | |
4571 | This is another reason why -ggdb debugging format is preferable. */ | |
4572 | ||
4573 | static int | |
fba45db2 | 4574 | add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last) |
c906108c SS |
4575 | { |
4576 | /* DEC c89 sometimes produces zero linenos which confuse gdb. | |
4577 | Change them to something sensible. */ | |
4578 | if (lineno == 0) | |
4579 | lineno = 1; | |
4580 | if (last == 0) | |
4581 | last = -2; /* make sure we record first line */ | |
4582 | ||
4583 | if (last == lineno) /* skip continuation lines */ | |
4584 | return lineno; | |
4585 | ||
4586 | lt->item[lt->nitems].line = lineno; | |
4587 | lt->item[lt->nitems++].pc = adr << 2; | |
4588 | return lineno; | |
4589 | } | |
4590 | \f | |
4591 | /* Sorting and reordering procedures */ | |
4592 | ||
4593 | /* Blocks with a smaller low bound should come first */ | |
4594 | ||
4595 | static int | |
12b9c64f | 4596 | compare_blocks (const void *arg1, const void *arg2) |
c906108c | 4597 | { |
887432a5 | 4598 | LONGEST addr_diff; |
c906108c SS |
4599 | struct block **b1 = (struct block **) arg1; |
4600 | struct block **b2 = (struct block **) arg2; | |
4601 | ||
4602 | addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2))); | |
4603 | if (addr_diff == 0) | |
4604 | return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1))); | |
4605 | return addr_diff; | |
4606 | } | |
4607 | ||
4608 | /* Sort the blocks of a symtab S. | |
4609 | Reorder the blocks in the blockvector by code-address, | |
4610 | as required by some MI search routines */ | |
4611 | ||
4612 | static void | |
fba45db2 | 4613 | sort_blocks (struct symtab *s) |
c906108c SS |
4614 | { |
4615 | struct blockvector *bv = BLOCKVECTOR (s); | |
4616 | ||
4617 | if (BLOCKVECTOR_NBLOCKS (bv) <= 2) | |
4618 | { | |
4619 | /* Cosmetic */ | |
4620 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0) | |
4621 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0; | |
4622 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0) | |
4623 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0; | |
4624 | return; | |
4625 | } | |
4626 | /* | |
4627 | * This is very unfortunate: normally all functions are compiled in | |
4628 | * the order they are found, but if the file is compiled -O3 things | |
4629 | * are very different. It would be nice to find a reliable test | |
4630 | * to detect -O3 images in advance. | |
4631 | */ | |
4632 | if (BLOCKVECTOR_NBLOCKS (bv) > 3) | |
4633 | qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK), | |
4634 | BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK, | |
4635 | sizeof (struct block *), | |
4636 | compare_blocks); | |
4637 | ||
4638 | { | |
aa1ee363 AC |
4639 | CORE_ADDR high = 0; |
4640 | int i, j = BLOCKVECTOR_NBLOCKS (bv); | |
c906108c SS |
4641 | |
4642 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) | |
4643 | if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i))) | |
4644 | high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)); | |
4645 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high; | |
4646 | } | |
4647 | ||
4648 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = | |
4649 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK)); | |
4650 | ||
4651 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4652 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4653 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4654 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4655 | } | |
4656 | \f | |
4657 | ||
4658 | /* Constructor/restructor/destructor procedures */ | |
4659 | ||
de4f826b DC |
4660 | /* Allocate a new symtab for NAME. Needs an estimate of how many |
4661 | linenumbers MAXLINES we'll put in it */ | |
c906108c SS |
4662 | |
4663 | static struct symtab * | |
de4f826b | 4664 | new_symtab (char *name, int maxlines, struct objfile *objfile) |
c906108c SS |
4665 | { |
4666 | struct symtab *s = allocate_symtab (name, objfile); | |
4667 | ||
4668 | LINETABLE (s) = new_linetable (maxlines); | |
4669 | ||
4670 | /* All symtabs must have at least two blocks */ | |
4671 | BLOCKVECTOR (s) = new_bvect (2); | |
de4f826b DC |
4672 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) |
4673 | = new_block (NON_FUNCTION_BLOCK); | |
4674 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) | |
4675 | = new_block (NON_FUNCTION_BLOCK); | |
c906108c SS |
4676 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) = |
4677 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
4678 | ||
4679 | s->free_code = free_linetable; | |
1c9e8358 | 4680 | s->debugformat = "ECOFF"; |
c906108c SS |
4681 | return (s); |
4682 | } | |
4683 | ||
4684 | /* Allocate a new partial_symtab NAME */ | |
4685 | ||
4686 | static struct partial_symtab * | |
fba45db2 | 4687 | new_psymtab (char *name, struct objfile *objfile) |
c906108c SS |
4688 | { |
4689 | struct partial_symtab *psymtab; | |
4690 | ||
4691 | psymtab = allocate_psymtab (name, objfile); | |
d4f3574e | 4692 | psymtab->section_offsets = objfile->section_offsets; |
c906108c SS |
4693 | |
4694 | /* Keep a backpointer to the file's symbols */ | |
4695 | ||
4696 | psymtab->read_symtab_private = ((char *) | |
8b92e4d5 | 4697 | obstack_alloc (&objfile->objfile_obstack, |
c906108c | 4698 | sizeof (struct symloc))); |
12b9c64f | 4699 | memset (psymtab->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
4700 | CUR_BFD (psymtab) = cur_bfd; |
4701 | DEBUG_SWAP (psymtab) = debug_swap; | |
4702 | DEBUG_INFO (psymtab) = debug_info; | |
4703 | PENDING_LIST (psymtab) = pending_list; | |
4704 | ||
4705 | /* The way to turn this into a symtab is to call... */ | |
4706 | psymtab->read_symtab = mdebug_psymtab_to_symtab; | |
4707 | return (psymtab); | |
4708 | } | |
4709 | ||
4710 | ||
4711 | /* Allocate a linetable array of the given SIZE. Since the struct | |
4712 | already includes one item, we subtract one when calculating the | |
4713 | proper size to allocate. */ | |
4714 | ||
4715 | static struct linetable * | |
fba45db2 | 4716 | new_linetable (int size) |
c906108c SS |
4717 | { |
4718 | struct linetable *l; | |
4719 | ||
4720 | size = (size - 1) * sizeof (l->item) + sizeof (struct linetable); | |
4721 | l = (struct linetable *) xmalloc (size); | |
4722 | l->nitems = 0; | |
4723 | return l; | |
4724 | } | |
4725 | ||
4726 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, | |
4727 | I am not so sure about the 3.4 ones. | |
4728 | ||
4729 | Since the struct linetable already includes one item, we subtract one when | |
4730 | calculating the proper size to allocate. */ | |
4731 | ||
4732 | static struct linetable * | |
fba45db2 | 4733 | shrink_linetable (struct linetable *lt) |
c906108c SS |
4734 | { |
4735 | ||
12b9c64f | 4736 | return (struct linetable *) xrealloc ((void *) lt, |
c906108c SS |
4737 | (sizeof (struct linetable) |
4738 | + ((lt->nitems - 1) | |
4739 | * sizeof (lt->item)))); | |
4740 | } | |
4741 | ||
4742 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ | |
4743 | ||
4744 | static struct blockvector * | |
fba45db2 | 4745 | new_bvect (int nblocks) |
c906108c SS |
4746 | { |
4747 | struct blockvector *bv; | |
4748 | int size; | |
4749 | ||
4750 | size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); | |
4751 | bv = (struct blockvector *) xzalloc (size); | |
4752 | ||
4753 | BLOCKVECTOR_NBLOCKS (bv) = nblocks; | |
4754 | ||
4755 | return bv; | |
4756 | } | |
4757 | ||
de4f826b DC |
4758 | /* Allocate and zero a new block, and set its BLOCK_DICT. If function |
4759 | is non-zero, assume the block is associated to a function, and make | |
4760 | sure that the symbols are stored linearly; otherwise, store them | |
4761 | hashed. */ | |
c906108c SS |
4762 | |
4763 | static struct block * | |
de4f826b | 4764 | new_block (enum block_type type) |
c906108c | 4765 | { |
a1632d59 DC |
4766 | /* FIXME: carlton/2003-09-11: This should use allocate_block to |
4767 | allocate the block. Which, in turn, suggests that the block | |
4768 | should be allocated on an obstack. */ | |
de4f826b | 4769 | struct block *retval = xzalloc (sizeof (struct block)); |
c906108c | 4770 | |
de4f826b DC |
4771 | if (type == FUNCTION_BLOCK) |
4772 | BLOCK_DICT (retval) = dict_create_linear_expandable (); | |
4773 | else | |
4774 | BLOCK_DICT (retval) = dict_create_hashed_expandable (); | |
c906108c | 4775 | |
de4f826b | 4776 | return retval; |
c906108c SS |
4777 | } |
4778 | ||
4779 | /* Create a new symbol with printname NAME */ | |
4780 | ||
4781 | static struct symbol * | |
fba45db2 | 4782 | new_symbol (char *name) |
c906108c SS |
4783 | { |
4784 | struct symbol *s = ((struct symbol *) | |
4a146b47 | 4785 | obstack_alloc (¤t_objfile->objfile_obstack, |
c906108c SS |
4786 | sizeof (struct symbol))); |
4787 | ||
12b9c64f | 4788 | memset (s, 0, sizeof (*s)); |
c906108c | 4789 | SYMBOL_LANGUAGE (s) = psymtab_language; |
04a679b8 | 4790 | SYMBOL_SET_NAMES (s, name, strlen (name), 1, current_objfile); |
c906108c SS |
4791 | return s; |
4792 | } | |
4793 | ||
4794 | /* Create a new type with printname NAME */ | |
4795 | ||
4796 | static struct type * | |
fba45db2 | 4797 | new_type (char *name) |
c906108c SS |
4798 | { |
4799 | struct type *t; | |
4800 | ||
4801 | t = alloc_type (current_objfile); | |
4802 | TYPE_NAME (t) = name; | |
b4ba55a1 | 4803 | INIT_CPLUS_SPECIFIC (t); |
c906108c SS |
4804 | return t; |
4805 | } | |
4806 | \f | |
4807 | /* Read ECOFF debugging information from a BFD section. This is | |
4808 | called from elfread.c. It parses the section into a | |
4809 | ecoff_debug_info struct, and then lets the rest of the file handle | |
4810 | it as normal. */ | |
4811 | ||
4812 | void | |
fba45db2 KB |
4813 | elfmdebug_build_psymtabs (struct objfile *objfile, |
4814 | const struct ecoff_debug_swap *swap, asection *sec) | |
c906108c SS |
4815 | { |
4816 | bfd *abfd = objfile->obfd; | |
4817 | struct ecoff_debug_info *info; | |
7134143f DJ |
4818 | struct cleanup *back_to; |
4819 | ||
4820 | /* FIXME: It's not clear whether we should be getting minimal symbol | |
4821 | information from .mdebug in an ELF file, or whether we will. | |
4822 | Re-initialize the minimal symbol reader in case we do. */ | |
4823 | ||
4824 | init_minimal_symbol_collection (); | |
4825 | back_to = make_cleanup_discard_minimal_symbols (); | |
c906108c SS |
4826 | |
4827 | info = ((struct ecoff_debug_info *) | |
8b92e4d5 | 4828 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
4829 | sizeof (struct ecoff_debug_info))); |
4830 | ||
4831 | if (!(*swap->read_debug_info) (abfd, sec, info)) | |
8a3fe4f8 | 4832 | error (_("Error reading ECOFF debugging information: %s"), |
c906108c SS |
4833 | bfd_errmsg (bfd_get_error ())); |
4834 | ||
d4f3574e | 4835 | mdebug_build_psymtabs (objfile, swap, info); |
7134143f DJ |
4836 | |
4837 | install_minimal_symbols (objfile); | |
4838 | do_cleanups (back_to); | |
c906108c | 4839 | } |
c906108c SS |
4840 | |
4841 | void | |
fba45db2 | 4842 | _initialize_mdebugread (void) |
c906108c | 4843 | { |
0a9d309a | 4844 | basic_type_data = register_objfile_data (); |
c906108c | 4845 | } |