Commit | Line | Data |
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c906108c | 1 | /* Read a symbol table in ECOFF format (Third-Eye). |
ee300cd4 | 2 | |
ecd75fc8 | 3 | Copyright (C) 1986-2014 Free Software Foundation, Inc. |
ee300cd4 | 4 | |
c906108c SS |
5 | Original version contributed by Alessandro Forin (af@cs.cmu.edu) at |
6 | CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor | |
7 | at Cygnus Support. | |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | /* This module provides the function mdebug_build_psymtabs. It reads | |
25 | ECOFF debugging information into partial symbol tables. The | |
26 | debugging information is read from two structures. A struct | |
27 | ecoff_debug_swap includes the sizes of each ECOFF structure and | |
28 | swapping routines; these are fixed for a particular target. A | |
29 | struct ecoff_debug_info points to the debugging information for a | |
30 | particular object file. | |
31 | ||
32 | ECOFF symbol tables are mostly written in the byte order of the | |
33 | target machine. However, one section of the table (the auxiliary | |
34 | symbol information) is written in the host byte order. There is a | |
35 | bit in the other symbol info which describes which host byte order | |
36 | was used. ECOFF thereby takes the trophy from Intel `b.out' for | |
37 | the most brain-dead adaptation of a file format to byte order. | |
38 | ||
39 | This module can read all four of the known byte-order combinations, | |
40 | on any type of host. */ | |
41 | ||
42 | #include "defs.h" | |
43 | #include "symtab.h" | |
44 | #include "gdbtypes.h" | |
45 | #include "gdbcore.h" | |
0ba1096a | 46 | #include "filenames.h" |
c906108c | 47 | #include "objfiles.h" |
04ea0df1 | 48 | #include "gdb_obstack.h" |
c906108c SS |
49 | #include "buildsym.h" |
50 | #include "stabsread.h" | |
51 | #include "complaints.h" | |
52 | #include "demangle.h" | |
50f182aa | 53 | #include "gdb-demangle.h" |
fe898f56 | 54 | #include "block.h" |
de4f826b | 55 | #include "dictionary.h" |
5b123146 | 56 | #include "mdebugread.h" |
53ce3c39 | 57 | #include <sys/stat.h> |
ccefe4c4 | 58 | #include "psympriv.h" |
05cba821 | 59 | #include "source.h" |
c906108c | 60 | |
c906108c SS |
61 | #include "bfd.h" |
62 | ||
025bb325 | 63 | #include "coff/ecoff.h" /* COFF-like aspects of ecoff files. */ |
c906108c SS |
64 | |
65 | #include "libaout.h" /* Private BFD a.out information. */ | |
66 | #include "aout/aout64.h" | |
025bb325 | 67 | #include "aout/stab_gnu.h" /* STABS information. */ |
c906108c SS |
68 | |
69 | #include "expression.h" | |
c906108c | 70 | |
a14ed312 | 71 | extern void _initialize_mdebugread (void); |
c906108c | 72 | |
025bb325 | 73 | /* Provide a way to test if we have both ECOFF and ELF symbol tables. |
c906108c SS |
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) | |
91a81f69 TT |
79 | |
80 | /* The objfile we are currently reading. */ | |
81 | ||
dd707e8e | 82 | static struct objfile *mdebugread_objfile; |
91a81f69 | 83 | |
c906108c | 84 | \f |
c5aa993b | 85 | |
c906108c SS |
86 | /* We put a pointer to this structure in the read_symtab_private field |
87 | of the psymtab. */ | |
88 | ||
89 | struct symloc | |
c5aa993b JM |
90 | { |
91 | /* Index of the FDR that this psymtab represents. */ | |
92 | int fdr_idx; | |
93 | /* The BFD that the psymtab was created from. */ | |
94 | bfd *cur_bfd; | |
95 | const struct ecoff_debug_swap *debug_swap; | |
96 | struct ecoff_debug_info *debug_info; | |
97 | struct mdebug_pending **pending_list; | |
98 | /* Pointer to external symbols for this file. */ | |
99 | EXTR *extern_tab; | |
100 | /* Size of extern_tab. */ | |
101 | int extern_count; | |
102 | enum language pst_language; | |
103 | }; | |
c906108c SS |
104 | |
105 | #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private) | |
106 | #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx) | |
107 | #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd) | |
108 | #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap) | |
109 | #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info) | |
110 | #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list) | |
111 | ||
112 | #define SC_IS_TEXT(sc) ((sc) == scText \ | |
113 | || (sc) == scRConst \ | |
114 | || (sc) == scInit \ | |
115 | || (sc) == scFini) | |
116 | #define SC_IS_DATA(sc) ((sc) == scData \ | |
117 | || (sc) == scSData \ | |
118 | || (sc) == scRData \ | |
119 | || (sc) == scPData \ | |
120 | || (sc) == scXData) | |
121 | #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon) | |
0e931cf0 JB |
122 | #define SC_IS_BSS(sc) ((sc) == scBss) |
123 | #define SC_IS_SBSS(sc) ((sc) == scSBss) | |
c906108c | 124 | #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined) |
c906108c | 125 | \f |
025bb325 | 126 | /* Various complaints about symbol reading that don't abort the process. */ |
23136709 KB |
127 | static void |
128 | index_complaint (const char *arg1) | |
129 | { | |
e2e0b3e5 | 130 | complaint (&symfile_complaints, _("bad aux index at symbol %s"), arg1); |
23136709 | 131 | } |
c906108c | 132 | |
23136709 KB |
133 | static void |
134 | unknown_ext_complaint (const char *arg1) | |
135 | { | |
e2e0b3e5 | 136 | complaint (&symfile_complaints, _("unknown external symbol %s"), arg1); |
23136709 | 137 | } |
c906108c | 138 | |
23136709 KB |
139 | static void |
140 | basic_type_complaint (int arg1, const char *arg2) | |
141 | { | |
e2e0b3e5 | 142 | complaint (&symfile_complaints, _("cannot map ECOFF basic type 0x%x for %s"), |
23136709 KB |
143 | arg1, arg2); |
144 | } | |
c906108c | 145 | |
23136709 KB |
146 | static void |
147 | bad_tag_guess_complaint (const char *arg1) | |
148 | { | |
3e43a32a MS |
149 | complaint (&symfile_complaints, |
150 | _("guessed tag type of %s incorrectly"), arg1); | |
23136709 | 151 | } |
c906108c | 152 | |
23136709 KB |
153 | static void |
154 | bad_rfd_entry_complaint (const char *arg1, int arg2, int arg3) | |
155 | { | |
e2e0b3e5 | 156 | complaint (&symfile_complaints, _("bad rfd entry for %s: file %d, index %d"), |
23136709 KB |
157 | arg1, arg2, arg3); |
158 | } | |
c906108c | 159 | |
23136709 KB |
160 | static void |
161 | unexpected_type_code_complaint (const char *arg1) | |
162 | { | |
e2e0b3e5 | 163 | complaint (&symfile_complaints, _("unexpected type code for %s"), arg1); |
23136709 | 164 | } |
c906108c | 165 | |
025bb325 | 166 | /* Macros and extra defs. */ |
c906108c | 167 | |
025bb325 | 168 | /* Puns: hard to find whether -g was used and how. */ |
c906108c SS |
169 | |
170 | #define MIN_GLEVEL GLEVEL_0 | |
171 | #define compare_glevel(a,b) \ | |
172 | (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \ | |
173 | ((b) == GLEVEL_3) ? -1 : (int)((b) - (a))) | |
174 | \f | |
025bb325 | 175 | /* Things that really are local to this module. */ |
c906108c | 176 | |
025bb325 | 177 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
178 | |
179 | static enum language psymtab_language = language_unknown; | |
180 | ||
181 | /* Current BFD. */ | |
182 | ||
183 | static bfd *cur_bfd; | |
184 | ||
185 | /* How to parse debugging information for CUR_BFD. */ | |
186 | ||
187 | static const struct ecoff_debug_swap *debug_swap; | |
188 | ||
189 | /* Pointers to debugging information for CUR_BFD. */ | |
190 | ||
191 | static struct ecoff_debug_info *debug_info; | |
192 | ||
025bb325 | 193 | /* Pointer to current file decriptor record, and its index. */ |
c906108c SS |
194 | |
195 | static FDR *cur_fdr; | |
196 | static int cur_fd; | |
197 | ||
025bb325 | 198 | /* Index of current symbol. */ |
c906108c SS |
199 | |
200 | static int cur_sdx; | |
201 | ||
202 | /* Note how much "debuggable" this image is. We would like | |
025bb325 | 203 | to see at least one FDR with full symbols. */ |
c906108c SS |
204 | |
205 | static int max_gdbinfo; | |
206 | static int max_glevel; | |
207 | ||
025bb325 | 208 | /* When examining .o files, report on undefined symbols. */ |
c906108c SS |
209 | |
210 | static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs; | |
211 | ||
212 | /* Pseudo symbol to use when putting stabs into the symbol table. */ | |
213 | ||
214 | static char stabs_symbol[] = STABS_SYMBOL; | |
215 | ||
c906108c SS |
216 | /* Nonzero if we have seen ecoff debugging info for a file. */ |
217 | ||
218 | static int found_ecoff_debugging_info; | |
219 | ||
025bb325 | 220 | /* Forward declarations. */ |
c906108c | 221 | |
12b9c64f AO |
222 | static int upgrade_type (int, struct type **, int, union aux_ext *, |
223 | int, char *); | |
c906108c | 224 | |
a14ed312 | 225 | static void parse_partial_symbols (struct objfile *); |
c906108c | 226 | |
a14ed312 | 227 | static int has_opaque_xref (FDR *, SYMR *); |
c906108c | 228 | |
12b9c64f AO |
229 | static int cross_ref (int, union aux_ext *, struct type **, enum type_code, |
230 | char **, int, char *); | |
c906108c | 231 | |
a14ed312 | 232 | static struct symbol *new_symbol (char *); |
c906108c | 233 | |
a14ed312 | 234 | static struct type *new_type (char *); |
c906108c | 235 | |
de4f826b | 236 | enum block_type { FUNCTION_BLOCK, NON_FUNCTION_BLOCK }; |
c906108c | 237 | |
de4f826b DC |
238 | static struct block *new_block (enum block_type); |
239 | ||
72b9f47f | 240 | static struct symtab *new_symtab (const char *, int, struct objfile *); |
c906108c | 241 | |
a14ed312 | 242 | static struct linetable *new_linetable (int); |
c906108c | 243 | |
a14ed312 | 244 | static struct blockvector *new_bvect (int); |
c906108c | 245 | |
a14ed312 KB |
246 | static struct type *parse_type (int, union aux_ext *, unsigned int, int *, |
247 | int, char *); | |
c906108c | 248 | |
3977b71f TT |
249 | static struct symbol *mylookup_symbol (char *, const struct block *, |
250 | domain_enum, enum address_class); | |
c906108c | 251 | |
a14ed312 | 252 | static void sort_blocks (struct symtab *); |
c906108c | 253 | |
a14ed312 | 254 | static struct partial_symtab *new_psymtab (char *, struct objfile *); |
c906108c | 255 | |
5c80ed9d TT |
256 | static void psymtab_to_symtab_1 (struct objfile *objfile, |
257 | struct partial_symtab *, const char *); | |
c906108c | 258 | |
a14ed312 | 259 | static void add_block (struct block *, struct symtab *); |
c906108c | 260 | |
c7efd0b9 | 261 | static void add_symbol (struct symbol *, struct symtab *, struct block *); |
c906108c | 262 | |
a14ed312 | 263 | static int add_line (struct linetable *, int, CORE_ADDR, int); |
c906108c | 264 | |
a14ed312 | 265 | static struct linetable *shrink_linetable (struct linetable *); |
c906108c | 266 | |
12b9c64f AO |
267 | static void handle_psymbol_enumerators (struct objfile *, FDR *, int, |
268 | CORE_ADDR); | |
c906108c | 269 | |
a14ed312 | 270 | static char *mdebug_next_symbol_text (struct objfile *); |
c906108c | 271 | \f |
257e7a09 YQ |
272 | /* Exported procedure: Builds a symtab from the partial symtab SELF. |
273 | Restores the environment in effect when SELF was created, delegates | |
c906108c | 274 | most of the work to an ancillary procedure, and sorts |
257e7a09 | 275 | and reorders the symtab list at the end. SELF is not NULL. */ |
c906108c SS |
276 | |
277 | static void | |
257e7a09 | 278 | mdebug_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 279 | { |
c906108c SS |
280 | if (info_verbose) |
281 | { | |
257e7a09 | 282 | printf_filtered (_("Reading in symbols for %s..."), self->filename); |
c906108c SS |
283 | gdb_flush (gdb_stdout); |
284 | } | |
285 | ||
286 | next_symbol_text_func = mdebug_next_symbol_text; | |
287 | ||
257e7a09 | 288 | psymtab_to_symtab_1 (objfile, self, self->filename); |
c906108c SS |
289 | |
290 | /* Match with global symbols. This only needs to be done once, | |
025bb325 | 291 | after all of the symtabs and dependencies have been read in. */ |
5c80ed9d | 292 | scan_file_globals (objfile); |
c906108c SS |
293 | |
294 | if (info_verbose) | |
a3f17187 | 295 | printf_filtered (_("done.\n")); |
c906108c SS |
296 | } |
297 | \f | |
025bb325 | 298 | /* File-level interface functions. */ |
c906108c | 299 | |
025bb325 | 300 | /* Find a file descriptor given its index RF relative to a file CF. */ |
c906108c SS |
301 | |
302 | static FDR * | |
fba45db2 | 303 | get_rfd (int cf, int rf) |
c906108c SS |
304 | { |
305 | FDR *fdrs; | |
52f0bd74 | 306 | FDR *f; |
c906108c SS |
307 | RFDT rfd; |
308 | ||
309 | fdrs = debug_info->fdr; | |
310 | f = fdrs + cf; | |
025bb325 | 311 | /* Object files do not have the RFD table, all refs are absolute. */ |
c906108c SS |
312 | if (f->rfdBase == 0) |
313 | return fdrs + rf; | |
314 | (*debug_swap->swap_rfd_in) (cur_bfd, | |
c5aa993b JM |
315 | ((char *) debug_info->external_rfd |
316 | + ((f->rfdBase + rf) | |
317 | * debug_swap->external_rfd_size)), | |
318 | &rfd); | |
c906108c SS |
319 | return fdrs + rfd; |
320 | } | |
321 | ||
025bb325 | 322 | /* Return a safer print NAME for a file descriptor. */ |
c906108c SS |
323 | |
324 | static char * | |
fba45db2 | 325 | fdr_name (FDR *f) |
c906108c SS |
326 | { |
327 | if (f->rss == -1) | |
328 | return "<stripped file>"; | |
329 | if (f->rss == 0) | |
330 | return "<NFY>"; | |
331 | return debug_info->ss + f->issBase + f->rss; | |
332 | } | |
333 | ||
334 | ||
335 | /* Read in and parse the symtab of the file OBJFILE. Symbols from | |
336 | different sections are relocated via the SECTION_OFFSETS. */ | |
337 | ||
338 | void | |
fba45db2 KB |
339 | mdebug_build_psymtabs (struct objfile *objfile, |
340 | const struct ecoff_debug_swap *swap, | |
341 | struct ecoff_debug_info *info) | |
c906108c SS |
342 | { |
343 | cur_bfd = objfile->obfd; | |
344 | debug_swap = swap; | |
345 | debug_info = info; | |
346 | ||
d3d55eeb EZ |
347 | stabsread_new_init (); |
348 | buildsym_new_init (); | |
349 | free_header_files (); | |
350 | init_header_files (); | |
351 | ||
c906108c SS |
352 | /* Make sure all the FDR information is swapped in. */ |
353 | if (info->fdr == (FDR *) NULL) | |
354 | { | |
355 | char *fdr_src; | |
356 | char *fdr_end; | |
357 | FDR *fdr_ptr; | |
358 | ||
8b92e4d5 | 359 | info->fdr = (FDR *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
360 | (info->symbolic_header.ifdMax |
361 | * sizeof (FDR))); | |
362 | fdr_src = info->external_fdr; | |
363 | fdr_end = (fdr_src | |
364 | + info->symbolic_header.ifdMax * swap->external_fdr_size); | |
365 | fdr_ptr = info->fdr; | |
366 | for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++) | |
367 | (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr); | |
368 | } | |
369 | ||
d4f3574e | 370 | parse_partial_symbols (objfile); |
c906108c SS |
371 | |
372 | #if 0 | |
373 | /* Check to make sure file was compiled with -g. If not, warn the | |
374 | user of this limitation. */ | |
375 | if (compare_glevel (max_glevel, GLEVEL_2) < 0) | |
376 | { | |
377 | if (max_gdbinfo == 0) | |
3e43a32a MS |
378 | printf_unfiltered (_("\n%s not compiled with -g, " |
379 | "debugging support is limited.\n"), | |
c5aa993b | 380 | objfile->name); |
3e43a32a MS |
381 | printf_unfiltered (_("You should compile with -g2 or " |
382 | "-g3 for best debugging support.\n")); | |
c906108c SS |
383 | gdb_flush (gdb_stdout); |
384 | } | |
385 | #endif | |
386 | } | |
387 | \f | |
388 | /* Local utilities */ | |
389 | ||
025bb325 | 390 | /* Map of FDR indexes to partial symtabs. */ |
c906108c SS |
391 | |
392 | struct pst_map | |
393 | { | |
394 | struct partial_symtab *pst; /* the psymtab proper */ | |
395 | long n_globals; /* exported globals (external symbols) */ | |
396 | long globals_offset; /* cumulative */ | |
397 | }; | |
398 | ||
399 | ||
400 | /* Utility stack, used to nest procedures and blocks properly. | |
401 | It is a doubly linked list, to avoid too many alloc/free. | |
402 | Since we might need it quite a few times it is NOT deallocated | |
025bb325 | 403 | after use. */ |
c906108c SS |
404 | |
405 | static struct parse_stack | |
c5aa993b JM |
406 | { |
407 | struct parse_stack *next, *prev; | |
025bb325 MS |
408 | struct symtab *cur_st; /* Current symtab. */ |
409 | struct block *cur_block; /* Block in it. */ | |
c5aa993b JM |
410 | |
411 | /* What are we parsing. stFile, or stBlock are for files and | |
412 | blocks. stProc or stStaticProc means we have seen the start of a | |
413 | procedure, but not the start of the block within in. When we see | |
414 | the start of that block, we change it to stNil, without pushing a | |
415 | new block, i.e. stNil means both a procedure and a block. */ | |
416 | ||
417 | int blocktype; | |
418 | ||
025bb325 MS |
419 | struct type *cur_type; /* Type we parse fields for. */ |
420 | int cur_field; /* Field number in cur_type. */ | |
421 | CORE_ADDR procadr; /* Start addres of this procedure. */ | |
422 | int numargs; /* Its argument count. */ | |
c5aa993b | 423 | } |
c906108c SS |
424 | |
425 | *top_stack; /* Top stack ptr */ | |
426 | ||
427 | ||
025bb325 | 428 | /* Enter a new lexical context. */ |
c906108c SS |
429 | |
430 | static void | |
fba45db2 | 431 | push_parse_stack (void) |
c906108c SS |
432 | { |
433 | struct parse_stack *new; | |
434 | ||
025bb325 | 435 | /* Reuse frames if possible. */ |
c906108c SS |
436 | if (top_stack && top_stack->prev) |
437 | new = top_stack->prev; | |
438 | else | |
439 | new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack)); | |
025bb325 | 440 | /* Initialize new frame with previous content. */ |
c906108c SS |
441 | if (top_stack) |
442 | { | |
aa1ee363 | 443 | struct parse_stack *prev = new->prev; |
c906108c SS |
444 | |
445 | *new = *top_stack; | |
446 | top_stack->prev = new; | |
447 | new->prev = prev; | |
448 | new->next = top_stack; | |
449 | } | |
450 | top_stack = new; | |
451 | } | |
452 | ||
025bb325 | 453 | /* Exit a lexical context. */ |
c906108c SS |
454 | |
455 | static void | |
fba45db2 | 456 | pop_parse_stack (void) |
c906108c SS |
457 | { |
458 | if (!top_stack) | |
459 | return; | |
460 | if (top_stack->next) | |
461 | top_stack = top_stack->next; | |
462 | } | |
463 | ||
464 | ||
465 | /* Cross-references might be to things we haven't looked at | |
466 | yet, e.g. type references. To avoid too many type | |
467 | duplications we keep a quick fixup table, an array | |
025bb325 | 468 | of lists of references indexed by file descriptor. */ |
c906108c SS |
469 | |
470 | struct mdebug_pending | |
471 | { | |
472 | struct mdebug_pending *next; /* link */ | |
473 | char *s; /* the unswapped symbol */ | |
474 | struct type *t; /* its partial type descriptor */ | |
475 | }; | |
476 | ||
477 | ||
b8b98ad1 TT |
478 | /* The pending information is kept for an entire object file. We |
479 | allocate the pending information table when we create the partial | |
480 | symbols, and we store a pointer to the single table in each | |
481 | psymtab. */ | |
c906108c SS |
482 | |
483 | static struct mdebug_pending **pending_list; | |
484 | ||
025bb325 | 485 | /* Check whether we already saw symbol SH in file FH. */ |
c906108c SS |
486 | |
487 | static struct mdebug_pending * | |
fba45db2 | 488 | is_pending_symbol (FDR *fh, char *sh) |
c906108c SS |
489 | { |
490 | int f_idx = fh - debug_info->fdr; | |
52f0bd74 | 491 | struct mdebug_pending *p; |
c906108c | 492 | |
025bb325 | 493 | /* Linear search is ok, list is typically no more than 10 deep. */ |
c906108c SS |
494 | for (p = pending_list[f_idx]; p; p = p->next) |
495 | if (p->s == sh) | |
496 | break; | |
497 | return p; | |
498 | } | |
499 | ||
025bb325 | 500 | /* Add a new symbol SH of type T. */ |
c906108c SS |
501 | |
502 | static void | |
fba45db2 | 503 | add_pending (FDR *fh, char *sh, struct type *t) |
c906108c SS |
504 | { |
505 | int f_idx = fh - debug_info->fdr; | |
506 | struct mdebug_pending *p = is_pending_symbol (fh, sh); | |
507 | ||
025bb325 | 508 | /* Make sure we do not make duplicates. */ |
c906108c SS |
509 | if (!p) |
510 | { | |
511 | p = ((struct mdebug_pending *) | |
dd707e8e | 512 | obstack_alloc (&mdebugread_objfile->objfile_obstack, |
c906108c SS |
513 | sizeof (struct mdebug_pending))); |
514 | p->s = sh; | |
515 | p->t = t; | |
516 | p->next = pending_list[f_idx]; | |
517 | pending_list[f_idx] = p; | |
518 | } | |
519 | } | |
520 | \f | |
521 | ||
025bb325 | 522 | /* Parsing Routines proper. */ |
c906108c | 523 | |
025bb325 | 524 | /* Parse a single symbol. Mostly just make up a GDB symbol for it. |
c906108c SS |
525 | For blocks, procedures and types we open a new lexical context. |
526 | This is basically just a big switch on the symbol's type. Argument | |
527 | AX is the base pointer of aux symbols for this file (fh->iauxBase). | |
528 | EXT_SH points to the unswapped symbol, which is needed for struct, | |
529 | union, etc., types; it is NULL for an EXTR. BIGEND says whether | |
530 | aux symbols are big-endian or little-endian. Return count of | |
531 | SYMR's handled (normally one). */ | |
532 | ||
768a979c UW |
533 | static int |
534 | mdebug_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
535 | { | |
536 | return gdbarch_ecoff_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
537 | } | |
538 | ||
539 | static const struct symbol_register_ops mdebug_register_funcs = { | |
540 | mdebug_reg_to_regnum | |
541 | }; | |
542 | ||
f1e6e072 TT |
543 | /* The "aclass" indices for computed symbols. */ |
544 | ||
545 | static int mdebug_register_index; | |
546 | static int mdebug_regparm_index; | |
547 | ||
c906108c | 548 | static int |
fba45db2 KB |
549 | parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend, |
550 | struct section_offsets *section_offsets, struct objfile *objfile) | |
c906108c | 551 | { |
5e2b427d | 552 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 553 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; |
12b9c64f | 554 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c SS |
555 | char *name; |
556 | struct symbol *s; | |
557 | struct block *b; | |
558 | struct mdebug_pending *pend; | |
559 | struct type *t; | |
560 | struct field *f; | |
561 | int count = 1; | |
562 | enum address_class class; | |
563 | TIR tir; | |
564 | long svalue = sh->value; | |
565 | int bitsize; | |
566 | ||
567 | if (ext_sh == (char *) NULL) | |
568 | name = debug_info->ssext + sh->iss; | |
569 | else | |
570 | name = debug_info->ss + cur_fdr->issBase + sh->iss; | |
571 | ||
572 | switch (sh->sc) | |
573 | { | |
574 | case scText: | |
575 | case scRConst: | |
576 | /* Do not relocate relative values. | |
c5aa993b JM |
577 | The value of a stEnd symbol is the displacement from the |
578 | corresponding start symbol value. | |
579 | The value of a stBlock symbol is the displacement from the | |
580 | procedure address. */ | |
c906108c | 581 | if (sh->st != stEnd && sh->st != stBlock) |
b8fbeb18 | 582 | sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
583 | break; |
584 | case scData: | |
585 | case scSData: | |
586 | case scRData: | |
587 | case scPData: | |
588 | case scXData: | |
b8fbeb18 | 589 | sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
590 | break; |
591 | case scBss: | |
592 | case scSBss: | |
b8fbeb18 | 593 | sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
594 | break; |
595 | } | |
596 | ||
597 | switch (sh->st) | |
598 | { | |
599 | case stNil: | |
600 | break; | |
601 | ||
025bb325 | 602 | case stGlobal: /* External symbol, goes into global block. */ |
c906108c SS |
603 | class = LOC_STATIC; |
604 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
605 | GLOBAL_BLOCK); | |
606 | s = new_symbol (name); | |
607 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
608 | goto data; | |
609 | ||
025bb325 | 610 | case stStatic: /* Static data, goes into current block. */ |
c906108c SS |
611 | class = LOC_STATIC; |
612 | b = top_stack->cur_block; | |
613 | s = new_symbol (name); | |
c5aa993b | 614 | if (SC_IS_COMMON (sh->sc)) |
c906108c SS |
615 | { |
616 | /* It is a FORTRAN common block. At least for SGI Fortran the | |
617 | address is not in the symbol; we need to fix it later in | |
618 | scan_file_globals. */ | |
3567439c | 619 | int bucket = hashname (SYMBOL_LINKAGE_NAME (s)); |
c906108c SS |
620 | SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket]; |
621 | global_sym_chain[bucket] = s; | |
622 | } | |
623 | else | |
624 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
625 | goto data; | |
626 | ||
025bb325 | 627 | case stLocal: /* Local variable, goes into current block. */ |
768a979c UW |
628 | b = top_stack->cur_block; |
629 | s = new_symbol (name); | |
630 | SYMBOL_VALUE (s) = svalue; | |
c906108c | 631 | if (sh->sc == scRegister) |
f1e6e072 | 632 | class = mdebug_register_index; |
c906108c SS |
633 | else |
634 | class = LOC_LOCAL; | |
c906108c | 635 | |
025bb325 | 636 | data: /* Common code for symbols describing data. */ |
176620f1 | 637 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
f1e6e072 | 638 | SYMBOL_ACLASS_INDEX (s) = class; |
c7efd0b9 | 639 | add_symbol (s, top_stack->cur_st, b); |
c906108c SS |
640 | |
641 | /* Type could be missing if file is compiled without debugging info. */ | |
c5aa993b | 642 | if (SC_IS_UNDEF (sh->sc) |
c906108c | 643 | || sh->sc == scNil || sh->index == indexNil) |
46bf5051 | 644 | SYMBOL_TYPE (s) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
645 | else |
646 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
025bb325 | 647 | /* Value of a data symbol is its memory address. */ |
c906108c SS |
648 | break; |
649 | ||
025bb325 MS |
650 | case stParam: /* Arg to procedure, goes into current |
651 | block. */ | |
c906108c SS |
652 | max_gdbinfo++; |
653 | found_ecoff_debugging_info = 1; | |
654 | top_stack->numargs++; | |
655 | ||
656 | /* Special GNU C++ name. */ | |
657 | if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0) | |
025bb325 | 658 | name = "this"; /* FIXME, not alloc'd in obstack. */ |
c906108c SS |
659 | s = new_symbol (name); |
660 | ||
176620f1 | 661 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
2a2d4dc3 | 662 | SYMBOL_IS_ARGUMENT (s) = 1; |
c906108c SS |
663 | switch (sh->sc) |
664 | { | |
665 | case scRegister: | |
666 | /* Pass by value in register. */ | |
f1e6e072 | 667 | SYMBOL_ACLASS_INDEX (s) = mdebug_register_index; |
c906108c SS |
668 | break; |
669 | case scVar: | |
670 | /* Pass by reference on stack. */ | |
f1e6e072 | 671 | SYMBOL_ACLASS_INDEX (s) = LOC_REF_ARG; |
c906108c SS |
672 | break; |
673 | case scVarRegister: | |
674 | /* Pass by reference in register. */ | |
f1e6e072 | 675 | SYMBOL_ACLASS_INDEX (s) = mdebug_regparm_index; |
c906108c SS |
676 | break; |
677 | default: | |
678 | /* Pass by value on stack. */ | |
f1e6e072 | 679 | SYMBOL_ACLASS_INDEX (s) = LOC_ARG; |
c906108c SS |
680 | break; |
681 | } | |
682 | SYMBOL_VALUE (s) = svalue; | |
683 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
c7efd0b9 | 684 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
685 | break; |
686 | ||
025bb325 | 687 | case stLabel: /* label, goes into current block. */ |
c906108c | 688 | s = new_symbol (name); |
025bb325 | 689 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; /* So that it can be used */ |
f1e6e072 | 690 | SYMBOL_ACLASS_INDEX (s) = LOC_LABEL; /* but not misused. */ |
c906108c | 691 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; |
46bf5051 | 692 | SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_int; |
c7efd0b9 | 693 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
694 | break; |
695 | ||
025bb325 MS |
696 | case stProc: /* Procedure, usually goes into global block. */ |
697 | case stStaticProc: /* Static procedure, goes into current block. */ | |
1fb4c65b JB |
698 | /* For stProc symbol records, we need to check the storage class |
699 | as well, as only (stProc, scText) entries represent "real" | |
700 | procedures - See the Compaq document titled "Object File / | |
701 | Symbol Table Format Specification" for more information. | |
702 | If the storage class is not scText, we discard the whole block | |
703 | of symbol records for this stProc. */ | |
704 | if (sh->st == stProc && sh->sc != scText) | |
705 | { | |
706 | char *ext_tsym = ext_sh; | |
707 | int keep_counting = 1; | |
708 | SYMR tsym; | |
709 | ||
710 | while (keep_counting) | |
711 | { | |
712 | ext_tsym += external_sym_size; | |
713 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
714 | count++; | |
715 | switch (tsym.st) | |
716 | { | |
717 | case stParam: | |
718 | break; | |
719 | case stEnd: | |
720 | keep_counting = 0; | |
721 | break; | |
722 | default: | |
723 | complaint (&symfile_complaints, | |
e2e0b3e5 | 724 | _("unknown symbol type 0x%x"), sh->st); |
1fb4c65b JB |
725 | break; |
726 | } | |
727 | } | |
728 | break; | |
729 | } | |
c906108c | 730 | s = new_symbol (name); |
176620f1 | 731 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
f1e6e072 | 732 | SYMBOL_ACLASS_INDEX (s) = LOC_BLOCK; |
025bb325 | 733 | /* Type of the return value. */ |
c5aa993b | 734 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
46bf5051 | 735 | t = objfile_type (objfile)->builtin_int; |
c906108c SS |
736 | else |
737 | { | |
738 | t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name); | |
ee300cd4 AC |
739 | if (strcmp (name, "malloc") == 0 |
740 | && TYPE_CODE (t) == TYPE_CODE_VOID) | |
c906108c SS |
741 | { |
742 | /* I don't know why, but, at least under Alpha GNU/Linux, | |
c5aa993b JM |
743 | when linking against a malloc without debugging |
744 | symbols, its read as a function returning void---this | |
745 | is bad because it means we cannot call functions with | |
746 | string arguments interactively; i.e., "call | |
747 | printf("howdy\n")" would fail with the error message | |
748 | "program has no memory available". To avoid this, we | |
749 | patch up the type and make it void* | |
025bb325 | 750 | instead. (davidm@azstarnet.com). */ |
c906108c SS |
751 | t = make_pointer_type (t, NULL); |
752 | } | |
753 | } | |
754 | b = top_stack->cur_block; | |
755 | if (sh->st == stProc) | |
756 | { | |
346d1dfe | 757 | const struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); |
b8d56208 | 758 | |
c906108c SS |
759 | /* The next test should normally be true, but provides a |
760 | hook for nested functions (which we don't want to make | |
28397f59 | 761 | global). */ |
c906108c SS |
762 | if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) |
763 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
764 | /* Irix 5 sometimes has duplicate names for the same | |
765 | function. We want to add such names up at the global | |
766 | level, not as a nested function. */ | |
767 | else if (sh->value == top_stack->procadr) | |
768 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
769 | } | |
c7efd0b9 | 770 | add_symbol (s, top_stack->cur_st, b); |
c906108c | 771 | |
025bb325 | 772 | /* Make a type for the procedure itself. */ |
c906108c SS |
773 | SYMBOL_TYPE (s) = lookup_function_type (t); |
774 | ||
1e698235 DJ |
775 | /* All functions in C++ have prototypes. For C we don't have enough |
776 | information in the debug info. */ | |
777 | if (SYMBOL_LANGUAGE (s) == language_cplus) | |
876cecd0 | 778 | TYPE_PROTOTYPED (SYMBOL_TYPE (s)) = 1; |
1e698235 | 779 | |
025bb325 | 780 | /* Create and enter a new lexical context. */ |
de4f826b | 781 | b = new_block (FUNCTION_BLOCK); |
c906108c SS |
782 | SYMBOL_BLOCK_VALUE (s) = b; |
783 | BLOCK_FUNCTION (b) = s; | |
784 | BLOCK_START (b) = BLOCK_END (b) = sh->value; | |
785 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
786 | add_block (b, top_stack->cur_st); | |
787 | ||
025bb325 | 788 | /* Not if we only have partial info. */ |
c5aa993b | 789 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
790 | break; |
791 | ||
792 | push_parse_stack (); | |
793 | top_stack->cur_block = b; | |
794 | top_stack->blocktype = sh->st; | |
795 | top_stack->cur_type = SYMBOL_TYPE (s); | |
796 | top_stack->cur_field = -1; | |
797 | top_stack->procadr = sh->value; | |
798 | top_stack->numargs = 0; | |
799 | break; | |
800 | ||
801 | /* Beginning of code for structure, union, and enum definitions. | |
c5aa993b | 802 | They all share a common set of local variables, defined here. */ |
c906108c SS |
803 | { |
804 | enum type_code type_code; | |
805 | char *ext_tsym; | |
806 | int nfields; | |
807 | long max_value; | |
808 | struct field *f; | |
809 | ||
025bb325 | 810 | case stStruct: /* Start a block defining a struct type. */ |
c906108c SS |
811 | type_code = TYPE_CODE_STRUCT; |
812 | goto structured_common; | |
813 | ||
025bb325 | 814 | case stUnion: /* Start a block defining a union type. */ |
c906108c SS |
815 | type_code = TYPE_CODE_UNION; |
816 | goto structured_common; | |
817 | ||
025bb325 | 818 | case stEnum: /* Start a block defining an enum type. */ |
c906108c SS |
819 | type_code = TYPE_CODE_ENUM; |
820 | goto structured_common; | |
821 | ||
025bb325 | 822 | case stBlock: /* Either a lexical block, or some type. */ |
c5aa993b | 823 | if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc)) |
c906108c SS |
824 | goto case_stBlock_code; /* Lexical block */ |
825 | ||
826 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ | |
827 | ||
828 | /* Common code for handling struct, union, enum, and/or as-yet- | |
829 | unknown-type blocks of info about structured data. `type_code' | |
830 | has been set to the proper TYPE_CODE, if we know it. */ | |
831 | structured_common: | |
832 | found_ecoff_debugging_info = 1; | |
833 | push_parse_stack (); | |
834 | top_stack->blocktype = stBlock; | |
835 | ||
025bb325 | 836 | /* First count the number of fields and the highest value. */ |
c906108c SS |
837 | nfields = 0; |
838 | max_value = 0; | |
839 | for (ext_tsym = ext_sh + external_sym_size; | |
840 | ; | |
841 | ext_tsym += external_sym_size) | |
842 | { | |
843 | SYMR tsym; | |
844 | ||
845 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
846 | ||
847 | switch (tsym.st) | |
848 | { | |
849 | case stEnd: | |
f0394be6 | 850 | /* C++ encodes class types as structures where there the |
025bb325 | 851 | methods are encoded as stProc. The scope of stProc |
f0394be6 JB |
852 | symbols also ends with stEnd, thus creating a risk of |
853 | taking the wrong stEnd symbol record as the end of | |
854 | the current struct, which would cause GDB to undercount | |
855 | the real number of fields in this struct. To make sure | |
856 | we really reached the right stEnd symbol record, we | |
857 | check the associated name, and match it against the | |
858 | struct name. Since method names are mangled while | |
859 | the class name is not, there is no risk of having a | |
860 | method whose name is identical to the class name | |
861 | (in particular constructor method names are different | |
862 | from the class name). There is therefore no risk that | |
7bde8967 KB |
863 | this check stops the count on the StEnd of a method. |
864 | ||
865 | Also, assume that we're really at the end when tsym.iss | |
866 | is 0 (issNull). */ | |
867 | if (tsym.iss == issNull | |
868 | || strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss, | |
869 | name) == 0) | |
f0394be6 JB |
870 | goto end_of_fields; |
871 | break; | |
c906108c SS |
872 | |
873 | case stMember: | |
874 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
875 | { |
876 | /* If the type of the member is Nil (or Void), | |
877 | without qualifiers, assume the tag is an | |
878 | enumeration. | |
879 | Alpha cc -migrate enums are recognized by a zero | |
880 | index and a zero symbol value. | |
881 | DU 4.0 cc enums are recognized by a member type of | |
882 | btEnum without qualifiers and a zero symbol value. */ | |
883 | if (tsym.index == indexNil | |
884 | || (tsym.index == 0 && sh->value == 0)) | |
885 | type_code = TYPE_CODE_ENUM; | |
886 | else | |
887 | { | |
888 | (*debug_swap->swap_tir_in) (bigend, | |
889 | &ax[tsym.index].a_ti, | |
890 | &tir); | |
891 | if ((tir.bt == btNil || tir.bt == btVoid | |
892 | || (tir.bt == btEnum && sh->value == 0)) | |
893 | && tir.tq0 == tqNil) | |
894 | type_code = TYPE_CODE_ENUM; | |
895 | } | |
896 | } | |
c906108c SS |
897 | nfields++; |
898 | if (tsym.value > max_value) | |
899 | max_value = tsym.value; | |
900 | break; | |
901 | ||
902 | case stBlock: | |
903 | case stUnion: | |
904 | case stEnum: | |
905 | case stStruct: | |
906 | { | |
907 | #if 0 | |
908 | /* This is a no-op; is it trying to tell us something | |
909 | we should be checking? */ | |
c5aa993b | 910 | if (tsym.sc == scVariant); /*UNIMPLEMENTED */ |
c906108c SS |
911 | #endif |
912 | if (tsym.index != 0) | |
913 | { | |
914 | /* This is something like a struct within a | |
c5aa993b JM |
915 | struct. Skip over the fields of the inner |
916 | struct. The -1 is because the for loop will | |
917 | increment ext_tsym. */ | |
c906108c SS |
918 | ext_tsym = ((char *) debug_info->external_sym |
919 | + ((cur_fdr->isymBase + tsym.index - 1) | |
920 | * external_sym_size)); | |
921 | } | |
922 | } | |
923 | break; | |
924 | ||
925 | case stTypedef: | |
926 | /* mips cc puts out a typedef for struct x if it is not yet | |
927 | defined when it encounters | |
928 | struct y { struct x *xp; }; | |
025bb325 | 929 | Just ignore it. */ |
c906108c SS |
930 | break; |
931 | ||
932 | case stIndirect: | |
933 | /* Irix5 cc puts out a stIndirect for struct x if it is not | |
934 | yet defined when it encounters | |
935 | struct y { struct x *xp; }; | |
025bb325 | 936 | Just ignore it. */ |
c906108c SS |
937 | break; |
938 | ||
939 | default: | |
23136709 | 940 | complaint (&symfile_complaints, |
3e43a32a MS |
941 | _("declaration block contains " |
942 | "unhandled symbol type %d"), | |
23136709 | 943 | tsym.st); |
c906108c SS |
944 | } |
945 | } | |
82ae4854 | 946 | end_of_fields: |
c906108c SS |
947 | |
948 | /* In an stBlock, there is no way to distinguish structs, | |
949 | unions, and enums at this point. This is a bug in the | |
950 | original design (that has been fixed with the recent | |
951 | addition of the stStruct, stUnion, and stEnum symbol | |
952 | types.) The way you can tell is if/when you see a variable | |
953 | or field of that type. In that case the variable's type | |
954 | (in the AUX table) says if the type is struct, union, or | |
955 | enum, and points back to the stBlock here. So you can | |
956 | patch the tag kind up later - but only if there actually is | |
957 | a variable or field of that type. | |
958 | ||
959 | So until we know for sure, we will guess at this point. | |
960 | The heuristic is: | |
961 | If the first member has index==indexNil or a void type, | |
962 | assume we have an enumeration. | |
963 | Otherwise, if there is more than one member, and all | |
964 | the members have offset 0, assume we have a union. | |
965 | Otherwise, assume we have a struct. | |
966 | ||
967 | The heuristic could guess wrong in the case of of an | |
968 | enumeration with no members or a union with one (or zero) | |
969 | members, or when all except the last field of a struct have | |
970 | width zero. These are uncommon and/or illegal situations, | |
971 | and in any case guessing wrong probably doesn't matter | |
972 | much. | |
973 | ||
974 | But if we later do find out we were wrong, we fixup the tag | |
975 | kind. Members of an enumeration must be handled | |
976 | differently from struct/union fields, and that is harder to | |
977 | patch up, but luckily we shouldn't need to. (If there are | |
978 | any enumeration members, we can tell for sure it's an enum | |
025bb325 | 979 | here.) */ |
c906108c SS |
980 | |
981 | if (type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
982 | { |
983 | if (nfields > 1 && max_value == 0) | |
984 | type_code = TYPE_CODE_UNION; | |
985 | else | |
986 | type_code = TYPE_CODE_STRUCT; | |
987 | } | |
c906108c SS |
988 | |
989 | /* Create a new type or use the pending type. */ | |
990 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
991 | if (pend == (struct mdebug_pending *) NULL) | |
992 | { | |
993 | t = new_type (NULL); | |
994 | add_pending (cur_fdr, ext_sh, t); | |
995 | } | |
996 | else | |
997 | t = pend->t; | |
998 | ||
999 | /* Do not set the tag name if it is a compiler generated tag name | |
1000 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. | |
1001 | Alpha cc puts out an sh->iss of zero for those. */ | |
1002 | if (sh->iss == 0 || name[0] == '.' || name[0] == '\0') | |
1003 | TYPE_TAG_NAME (t) = NULL; | |
1004 | else | |
dd707e8e | 1005 | TYPE_TAG_NAME (t) = obconcat (&mdebugread_objfile->objfile_obstack, |
3e43a32a | 1006 | name, (char *) NULL); |
c906108c SS |
1007 | |
1008 | TYPE_CODE (t) = type_code; | |
1009 | TYPE_LENGTH (t) = sh->value; | |
1010 | TYPE_NFIELDS (t) = nfields; | |
1011 | TYPE_FIELDS (t) = f = ((struct field *) | |
1012 | TYPE_ALLOC (t, | |
1013 | nfields * sizeof (struct field))); | |
1014 | ||
1015 | if (type_code == TYPE_CODE_ENUM) | |
1016 | { | |
1017 | int unsigned_enum = 1; | |
1018 | ||
025bb325 | 1019 | /* This is a non-empty enum. */ |
c906108c SS |
1020 | |
1021 | /* DEC c89 has the number of enumerators in the sh.value field, | |
1022 | not the type length, so we have to compensate for that | |
1023 | incompatibility quirk. | |
1024 | This might do the wrong thing for an enum with one or two | |
1025 | enumerators and gcc -gcoff -fshort-enums, but these cases | |
1026 | are hopefully rare enough. | |
1027 | Alpha cc -migrate has a sh.value field of zero, we adjust | |
1028 | that too. */ | |
1029 | if (TYPE_LENGTH (t) == TYPE_NFIELDS (t) | |
1030 | || TYPE_LENGTH (t) == 0) | |
5e2b427d | 1031 | TYPE_LENGTH (t) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
c906108c SS |
1032 | for (ext_tsym = ext_sh + external_sym_size; |
1033 | ; | |
1034 | ext_tsym += external_sym_size) | |
1035 | { | |
1036 | SYMR tsym; | |
1037 | struct symbol *enum_sym; | |
1038 | ||
1039 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
1040 | ||
1041 | if (tsym.st != stMember) | |
1042 | break; | |
1043 | ||
14e75d8e | 1044 | SET_FIELD_ENUMVAL (*f, tsym.value); |
c906108c SS |
1045 | FIELD_TYPE (*f) = t; |
1046 | FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss; | |
1047 | FIELD_BITSIZE (*f) = 0; | |
1048 | ||
e623cf5d | 1049 | enum_sym = allocate_symbol (mdebugread_objfile); |
3567439c | 1050 | SYMBOL_SET_LINKAGE_NAME |
10f0c4bb TT |
1051 | (enum_sym, |
1052 | obstack_copy0 (&mdebugread_objfile->objfile_obstack, | |
1053 | f->name, strlen (f->name))); | |
f1e6e072 | 1054 | SYMBOL_ACLASS_INDEX (enum_sym) = LOC_CONST; |
c906108c | 1055 | SYMBOL_TYPE (enum_sym) = t; |
176620f1 | 1056 | SYMBOL_DOMAIN (enum_sym) = VAR_DOMAIN; |
c906108c SS |
1057 | SYMBOL_VALUE (enum_sym) = tsym.value; |
1058 | if (SYMBOL_VALUE (enum_sym) < 0) | |
1059 | unsigned_enum = 0; | |
c7efd0b9 | 1060 | add_symbol (enum_sym, top_stack->cur_st, top_stack->cur_block); |
c906108c | 1061 | |
025bb325 | 1062 | /* Skip the stMembers that we've handled. */ |
c906108c SS |
1063 | count++; |
1064 | f++; | |
1065 | } | |
1066 | if (unsigned_enum) | |
876cecd0 | 1067 | TYPE_UNSIGNED (t) = 1; |
c906108c | 1068 | } |
025bb325 | 1069 | /* Make this the current type. */ |
c906108c SS |
1070 | top_stack->cur_type = t; |
1071 | top_stack->cur_field = 0; | |
1072 | ||
1073 | /* Do not create a symbol for alpha cc unnamed structs. */ | |
1074 | if (sh->iss == 0) | |
1075 | break; | |
1076 | ||
1077 | /* gcc puts out an empty struct for an opaque struct definitions, | |
1078 | do not create a symbol for it either. */ | |
1079 | if (TYPE_NFIELDS (t) == 0) | |
1080 | { | |
876cecd0 | 1081 | TYPE_STUB (t) = 1; |
c906108c SS |
1082 | break; |
1083 | } | |
1084 | ||
1085 | s = new_symbol (name); | |
176620f1 | 1086 | SYMBOL_DOMAIN (s) = STRUCT_DOMAIN; |
f1e6e072 | 1087 | SYMBOL_ACLASS_INDEX (s) = LOC_TYPEDEF; |
c906108c SS |
1088 | SYMBOL_VALUE (s) = 0; |
1089 | SYMBOL_TYPE (s) = t; | |
c7efd0b9 | 1090 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1091 | break; |
1092 | ||
1093 | /* End of local variables shared by struct, union, enum, and | |
1094 | block (as yet unknown struct/union/enum) processing. */ | |
1095 | } | |
1096 | ||
1097 | case_stBlock_code: | |
1098 | found_ecoff_debugging_info = 1; | |
025bb325 MS |
1099 | /* Beginnning of (code) block. Value of symbol |
1100 | is the displacement from procedure start. */ | |
c906108c SS |
1101 | push_parse_stack (); |
1102 | ||
1103 | /* Do not start a new block if this is the outermost block of a | |
c5aa993b JM |
1104 | procedure. This allows the LOC_BLOCK symbol to point to the |
1105 | block with the local variables, so funcname::var works. */ | |
c906108c SS |
1106 | if (top_stack->blocktype == stProc |
1107 | || top_stack->blocktype == stStaticProc) | |
1108 | { | |
1109 | top_stack->blocktype = stNil; | |
1110 | break; | |
1111 | } | |
1112 | ||
1113 | top_stack->blocktype = stBlock; | |
de4f826b | 1114 | b = new_block (NON_FUNCTION_BLOCK); |
c906108c SS |
1115 | BLOCK_START (b) = sh->value + top_stack->procadr; |
1116 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1117 | top_stack->cur_block = b; | |
1118 | add_block (b, top_stack->cur_st); | |
1119 | break; | |
1120 | ||
1121 | case stEnd: /* end (of anything) */ | |
c5aa993b | 1122 | if (sh->sc == scInfo || SC_IS_COMMON (sh->sc)) |
c906108c SS |
1123 | { |
1124 | /* Finished with type */ | |
1125 | top_stack->cur_type = 0; | |
1126 | } | |
1127 | else if (sh->sc == scText && | |
1128 | (top_stack->blocktype == stProc || | |
1129 | top_stack->blocktype == stStaticProc)) | |
1130 | { | |
1131 | /* Finished with procedure */ | |
346d1dfe | 1132 | const struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); |
f92761ec | 1133 | struct mdebug_extra_func_info *e; |
de4f826b | 1134 | struct block *b = top_stack->cur_block; |
c906108c SS |
1135 | struct type *ftype = top_stack->cur_type; |
1136 | int i; | |
1137 | ||
1138 | BLOCK_END (top_stack->cur_block) += sh->value; /* size */ | |
1139 | ||
025bb325 | 1140 | /* Make up special symbol to contain procedure specific info. */ |
f92761ec | 1141 | s = new_symbol (MDEBUG_EFI_SYMBOL_NAME); |
176620f1 | 1142 | SYMBOL_DOMAIN (s) = LABEL_DOMAIN; |
f1e6e072 | 1143 | SYMBOL_ACLASS_INDEX (s) = LOC_CONST; |
dd707e8e | 1144 | SYMBOL_TYPE (s) = objfile_type (mdebugread_objfile)->builtin_void; |
f92761ec | 1145 | e = ((struct mdebug_extra_func_info *) |
dd707e8e | 1146 | obstack_alloc (&mdebugread_objfile->objfile_obstack, |
f92761ec AC |
1147 | sizeof (struct mdebug_extra_func_info))); |
1148 | memset (e, 0, sizeof (struct mdebug_extra_func_info)); | |
9918cab9 | 1149 | SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e; |
c906108c SS |
1150 | e->numargs = top_stack->numargs; |
1151 | e->pdr.framereg = -1; | |
c7efd0b9 | 1152 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c | 1153 | |
c906108c SS |
1154 | /* f77 emits proc-level with address bounds==[0,0], |
1155 | So look for such child blocks, and patch them. */ | |
1156 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
1157 | { | |
1158 | struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i); | |
b8d56208 | 1159 | |
c906108c SS |
1160 | if (BLOCK_SUPERBLOCK (b_bad) == b |
1161 | && BLOCK_START (b_bad) == top_stack->procadr | |
1162 | && BLOCK_END (b_bad) == top_stack->procadr) | |
1163 | { | |
1164 | BLOCK_START (b_bad) = BLOCK_START (b); | |
1165 | BLOCK_END (b_bad) = BLOCK_END (b); | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | if (TYPE_NFIELDS (ftype) <= 0) | |
1170 | { | |
1171 | /* No parameter type information is recorded with the function's | |
025bb325 | 1172 | type. Set that from the type of the parameter symbols. */ |
c906108c SS |
1173 | int nparams = top_stack->numargs; |
1174 | int iparams; | |
1175 | struct symbol *sym; | |
1176 | ||
1177 | if (nparams > 0) | |
1178 | { | |
8157b174 | 1179 | struct block_iterator iter; |
b8d56208 | 1180 | |
c906108c SS |
1181 | TYPE_NFIELDS (ftype) = nparams; |
1182 | TYPE_FIELDS (ftype) = (struct field *) | |
1183 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
c5aa993b | 1184 | |
de4f826b DC |
1185 | iparams = 0; |
1186 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
c906108c | 1187 | { |
de4f826b DC |
1188 | if (iparams == nparams) |
1189 | break; | |
1190 | ||
2a2d4dc3 | 1191 | if (SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1192 | { |
c906108c | 1193 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); |
8176bb6d | 1194 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 1195 | iparams++; |
c906108c SS |
1196 | } |
1197 | } | |
1198 | } | |
1199 | } | |
1200 | } | |
1201 | else if (sh->sc == scText && top_stack->blocktype == stBlock) | |
1202 | { | |
025bb325 | 1203 | /* End of (code) block. The value of the symbol is the |
c906108c | 1204 | displacement from the procedure`s start address of the |
025bb325 | 1205 | end of this block. */ |
c906108c | 1206 | BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr; |
c906108c SS |
1207 | } |
1208 | else if (sh->sc == scText && top_stack->blocktype == stNil) | |
1209 | { | |
1210 | /* End of outermost block. Pop parse stack and ignore. The | |
1211 | following stEnd of stProc will take care of the block. */ | |
1212 | ; | |
1213 | } | |
1214 | else if (sh->sc == scText && top_stack->blocktype == stFile) | |
1215 | { | |
1216 | /* End of file. Pop parse stack and ignore. Higher | |
1217 | level code deals with this. */ | |
1218 | ; | |
1219 | } | |
1220 | else | |
23136709 | 1221 | complaint (&symfile_complaints, |
e2e0b3e5 | 1222 | _("stEnd with storage class %d not handled"), sh->sc); |
c906108c | 1223 | |
025bb325 | 1224 | pop_parse_stack (); /* Restore previous lexical context. */ |
c906108c SS |
1225 | break; |
1226 | ||
1227 | case stMember: /* member of struct or union */ | |
1228 | f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++]; | |
1229 | FIELD_NAME (*f) = name; | |
d6a843b5 | 1230 | SET_FIELD_BITPOS (*f, sh->value); |
c906108c | 1231 | bitsize = 0; |
3e43a32a MS |
1232 | FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, |
1233 | &bitsize, bigend, name); | |
c906108c SS |
1234 | FIELD_BITSIZE (*f) = bitsize; |
1235 | break; | |
1236 | ||
1237 | case stIndirect: /* forward declaration on Irix5 */ | |
1238 | /* Forward declarations from Irix5 cc are handled by cross_ref, | |
c5aa993b | 1239 | skip them. */ |
c906108c SS |
1240 | break; |
1241 | ||
1242 | case stTypedef: /* type definition */ | |
1243 | found_ecoff_debugging_info = 1; | |
1244 | ||
1245 | /* Typedefs for forward declarations and opaque structs from alpha cc | |
c5aa993b | 1246 | are handled by cross_ref, skip them. */ |
c906108c SS |
1247 | if (sh->iss == 0) |
1248 | break; | |
1249 | ||
1250 | /* Parse the type or use the pending type. */ | |
1251 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1252 | if (pend == (struct mdebug_pending *) NULL) | |
1253 | { | |
c5aa993b | 1254 | t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name); |
c906108c SS |
1255 | add_pending (cur_fdr, ext_sh, t); |
1256 | } | |
1257 | else | |
1258 | t = pend->t; | |
1259 | ||
025bb325 MS |
1260 | /* Mips cc puts out a typedef with the name of the struct for forward |
1261 | declarations. These should not go into the symbol table and | |
c5aa993b JM |
1262 | TYPE_NAME should not be set for them. |
1263 | They can't be distinguished from an intentional typedef to | |
1264 | the same name however: | |
1265 | x.h: | |
1266 | struct x { int ix; int jx; }; | |
1267 | struct xx; | |
1268 | x.c: | |
1269 | typedef struct x x; | |
1270 | struct xx {int ixx; int jxx; }; | |
1271 | generates a cross referencing stTypedef for x and xx. | |
1272 | The user visible effect of this is that the type of a pointer | |
1273 | to struct foo sometimes is given as `foo *' instead of `struct foo *'. | |
1274 | The problem is fixed with alpha cc and Irix5 cc. */ | |
c906108c SS |
1275 | |
1276 | /* However if the typedef cross references to an opaque aggregate, it | |
c5aa993b | 1277 | is safe to omit it from the symbol table. */ |
c906108c SS |
1278 | |
1279 | if (has_opaque_xref (cur_fdr, sh)) | |
1280 | break; | |
1281 | s = new_symbol (name); | |
176620f1 | 1282 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
f1e6e072 | 1283 | SYMBOL_ACLASS_INDEX (s) = LOC_TYPEDEF; |
c906108c SS |
1284 | SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block; |
1285 | SYMBOL_TYPE (s) = t; | |
c7efd0b9 | 1286 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1287 | |
1288 | /* Incomplete definitions of structs should not get a name. */ | |
1289 | if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL | |
1290 | && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0 | |
c5aa993b | 1291 | || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT |
c906108c SS |
1292 | && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION))) |
1293 | { | |
1294 | if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR | |
1295 | || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC) | |
1296 | { | |
1297 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1298 | foo" or "function returning foo", we better not set |
1299 | the TYPE_NAME. If the program contains "typedef char | |
1300 | *caddr_t;", we don't want all variables of type char | |
1301 | * to print as caddr_t. This is not just a | |
1302 | consequence of GDB's type management; CC and GCC (at | |
1303 | least through version 2.4) both output variables of | |
1304 | either type char * or caddr_t with the type | |
1305 | refering to the stTypedef symbol for caddr_t. If a future | |
1306 | compiler cleans this up it GDB is not ready for it | |
1307 | yet, but if it becomes ready we somehow need to | |
1308 | disable this check (without breaking the PCC/GCC2.4 | |
1309 | case). | |
1310 | ||
1311 | Sigh. | |
1312 | ||
1313 | Fortunately, this check seems not to be necessary | |
1314 | for anything except pointers or functions. */ | |
c906108c SS |
1315 | } |
1316 | else | |
3567439c | 1317 | TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_LINKAGE_NAME (s); |
c906108c SS |
1318 | } |
1319 | break; | |
1320 | ||
1321 | case stFile: /* file name */ | |
1322 | push_parse_stack (); | |
1323 | top_stack->blocktype = sh->st; | |
1324 | break; | |
1325 | ||
1326 | /* I`ve never seen these for C */ | |
1327 | case stRegReloc: | |
1328 | break; /* register relocation */ | |
1329 | case stForward: | |
1330 | break; /* forwarding address */ | |
1331 | case stConstant: | |
1332 | break; /* constant */ | |
1333 | default: | |
e2e0b3e5 | 1334 | complaint (&symfile_complaints, _("unknown symbol type 0x%x"), sh->st); |
c906108c SS |
1335 | break; |
1336 | } | |
1337 | ||
1338 | return count; | |
1339 | } | |
1340 | ||
0a9d309a UW |
1341 | /* Basic types. */ |
1342 | ||
1343 | static const struct objfile_data *basic_type_data; | |
1344 | ||
1345 | static struct type * | |
1346 | basic_type (int bt, struct objfile *objfile) | |
1347 | { | |
1348 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
1349 | struct type **map_bt = objfile_data (objfile, basic_type_data); | |
1350 | struct type *tp; | |
1351 | ||
1352 | if (bt >= btMax) | |
1353 | return NULL; | |
1354 | ||
1355 | if (!map_bt) | |
1356 | { | |
1357 | map_bt = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
1358 | btMax, struct type *); | |
1359 | set_objfile_data (objfile, basic_type_data, map_bt); | |
1360 | } | |
1361 | ||
1362 | if (map_bt[bt]) | |
1363 | return map_bt[bt]; | |
1364 | ||
1365 | switch (bt) | |
1366 | { | |
1367 | case btNil: | |
46bf5051 | 1368 | tp = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1369 | break; |
1370 | ||
1371 | case btAdr: | |
1372 | tp = init_type (TYPE_CODE_PTR, 4, TYPE_FLAG_UNSIGNED, | |
1373 | "adr_32", objfile); | |
46bf5051 | 1374 | TYPE_TARGET_TYPE (tp) = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1375 | break; |
1376 | ||
1377 | case btChar: | |
1378 | tp = init_type (TYPE_CODE_INT, 1, 0, | |
1379 | "char", objfile); | |
1380 | break; | |
1381 | ||
1382 | case btUChar: | |
1383 | tp = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
1384 | "unsigned char", objfile); | |
1385 | break; | |
1386 | ||
1387 | case btShort: | |
1388 | tp = init_type (TYPE_CODE_INT, 2, 0, | |
1389 | "short", objfile); | |
1390 | break; | |
1391 | ||
1392 | case btUShort: | |
1393 | tp = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
1394 | "unsigned short", objfile); | |
1395 | break; | |
1396 | ||
1397 | case btInt: | |
1398 | tp = init_type (TYPE_CODE_INT, 4, 0, | |
1399 | "int", objfile); | |
1400 | break; | |
1401 | ||
1402 | case btUInt: | |
1403 | tp = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1404 | "unsigned int", objfile); | |
1405 | break; | |
1406 | ||
1407 | case btLong: | |
1408 | tp = init_type (TYPE_CODE_INT, 4, 0, | |
1409 | "long", objfile); | |
1410 | break; | |
1411 | ||
1412 | case btULong: | |
1413 | tp = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1414 | "unsigned long", objfile); | |
1415 | break; | |
1416 | ||
1417 | case btFloat: | |
1418 | tp = init_type (TYPE_CODE_FLT, | |
1419 | gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1420 | "float", objfile); | |
1421 | break; | |
1422 | ||
1423 | case btDouble: | |
1424 | tp = init_type (TYPE_CODE_FLT, | |
1425 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1426 | "double", objfile); | |
1427 | break; | |
1428 | ||
1429 | case btComplex: | |
1430 | tp = init_type (TYPE_CODE_COMPLEX, | |
1431 | 2 * gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1432 | "complex", objfile); | |
1433 | TYPE_TARGET_TYPE (tp) = basic_type (btFloat, objfile); | |
1434 | break; | |
1435 | ||
1436 | case btDComplex: | |
1437 | tp = init_type (TYPE_CODE_COMPLEX, | |
1438 | 2 * gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1439 | "double complex", objfile); | |
1440 | TYPE_TARGET_TYPE (tp) = basic_type (btDouble, objfile); | |
1441 | break; | |
1442 | ||
1443 | case btFixedDec: | |
1444 | /* We use TYPE_CODE_INT to print these as integers. Does this do any | |
1445 | good? Would we be better off with TYPE_CODE_ERROR? Should | |
1446 | TYPE_CODE_ERROR print things in hex if it knows the size? */ | |
1447 | tp = init_type (TYPE_CODE_INT, | |
1448 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1449 | "fixed decimal", objfile); | |
1450 | break; | |
1451 | ||
1452 | case btFloatDec: | |
1453 | tp = init_type (TYPE_CODE_ERROR, | |
1454 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1455 | "floating decimal", objfile); | |
1456 | break; | |
1457 | ||
1458 | case btString: | |
1459 | /* Is a "string" the way btString means it the same as TYPE_CODE_STRING? | |
1460 | FIXME. */ | |
1461 | tp = init_type (TYPE_CODE_STRING, 1, 0, | |
1462 | "string", objfile); | |
1463 | break; | |
1464 | ||
1465 | case btVoid: | |
46bf5051 | 1466 | tp = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1467 | break; |
1468 | ||
1469 | case btLong64: | |
1470 | tp = init_type (TYPE_CODE_INT, 8, 0, | |
1471 | "long", objfile); | |
1472 | break; | |
1473 | ||
1474 | case btULong64: | |
1475 | tp = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
1476 | "unsigned long", objfile); | |
1477 | break; | |
1478 | ||
1479 | case btLongLong64: | |
1480 | tp = init_type (TYPE_CODE_INT, 8, 0, | |
1481 | "long long", objfile); | |
1482 | break; | |
1483 | ||
1484 | case btULongLong64: | |
1485 | tp = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
1486 | "unsigned long long", objfile); | |
1487 | break; | |
1488 | ||
1489 | case btAdr64: | |
1490 | tp = init_type (TYPE_CODE_PTR, 8, TYPE_FLAG_UNSIGNED, | |
1491 | "adr_64", objfile); | |
46bf5051 | 1492 | TYPE_TARGET_TYPE (tp) = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1493 | break; |
1494 | ||
1495 | case btInt64: | |
1496 | tp = init_type (TYPE_CODE_INT, 8, 0, | |
1497 | "int", objfile); | |
1498 | break; | |
1499 | ||
1500 | case btUInt64: | |
1501 | tp = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
1502 | "unsigned int", objfile); | |
1503 | break; | |
1504 | ||
1505 | default: | |
1506 | tp = NULL; | |
1507 | break; | |
1508 | } | |
1509 | ||
1510 | map_bt[bt] = tp; | |
1511 | return tp; | |
1512 | } | |
1513 | ||
c906108c | 1514 | /* Parse the type information provided in the raw AX entries for |
025bb325 | 1515 | the symbol SH. Return the bitfield size in BS, in case. |
c906108c SS |
1516 | We must byte-swap the AX entries before we use them; BIGEND says whether |
1517 | they are big-endian or little-endian (from fh->fBigendian). */ | |
1518 | ||
1519 | static struct type * | |
fba45db2 KB |
1520 | parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs, |
1521 | int bigend, char *sym_name) | |
c906108c | 1522 | { |
c906108c SS |
1523 | TIR t[1]; |
1524 | struct type *tp = 0; | |
1525 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1526 | ||
025bb325 | 1527 | /* Handle undefined types, they have indexNil. */ |
c906108c | 1528 | if (aux_index == indexNil) |
dd707e8e | 1529 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1530 | |
1531 | /* Handle corrupt aux indices. */ | |
1532 | if (aux_index >= (debug_info->fdr + fd)->caux) | |
1533 | { | |
23136709 | 1534 | index_complaint (sym_name); |
dd707e8e | 1535 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1536 | } |
1537 | ax += aux_index; | |
1538 | ||
1539 | /* Use aux as a type information record, map its basic type. */ | |
1540 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
dd707e8e | 1541 | tp = basic_type (t->bt, mdebugread_objfile); |
0a9d309a | 1542 | if (tp == NULL) |
c906108c | 1543 | { |
025bb325 | 1544 | /* Cannot use builtin types -- build our own. */ |
c906108c SS |
1545 | switch (t->bt) |
1546 | { | |
1547 | case btStruct: | |
1548 | type_code = TYPE_CODE_STRUCT; | |
1549 | break; | |
1550 | case btUnion: | |
1551 | type_code = TYPE_CODE_UNION; | |
1552 | break; | |
1553 | case btEnum: | |
1554 | type_code = TYPE_CODE_ENUM; | |
1555 | break; | |
1556 | case btRange: | |
1557 | type_code = TYPE_CODE_RANGE; | |
1558 | break; | |
1559 | case btSet: | |
1560 | type_code = TYPE_CODE_SET; | |
1561 | break; | |
1562 | case btIndirect: | |
025bb325 | 1563 | /* alpha cc -migrate uses this for typedefs. The true type will |
c906108c SS |
1564 | be obtained by crossreferencing below. */ |
1565 | type_code = TYPE_CODE_ERROR; | |
1566 | break; | |
1567 | case btTypedef: | |
025bb325 | 1568 | /* alpha cc uses this for typedefs. The true type will be |
c906108c SS |
1569 | obtained by crossreferencing below. */ |
1570 | type_code = TYPE_CODE_ERROR; | |
1571 | break; | |
1572 | default: | |
23136709 | 1573 | basic_type_complaint (t->bt, sym_name); |
dd707e8e | 1574 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1575 | } |
1576 | } | |
1577 | ||
025bb325 | 1578 | /* Move on to next aux. */ |
c906108c SS |
1579 | ax++; |
1580 | ||
1581 | if (t->fBitfield) | |
1582 | { | |
1583 | int width = AUX_GET_WIDTH (bigend, ax); | |
b8d56208 | 1584 | |
25caa7a8 | 1585 | /* Inhibit core dumps if TIR is corrupted. */ |
c5aa993b | 1586 | if (bs == (int *) NULL) |
c906108c SS |
1587 | { |
1588 | /* Alpha cc -migrate encodes char and unsigned char types | |
1589 | as short and unsigned short types with a field width of 8. | |
1590 | Enum types also have a field width which we ignore for now. */ | |
1591 | if (t->bt == btShort && width == 8) | |
dd707e8e | 1592 | tp = basic_type (btChar, mdebugread_objfile); |
c906108c | 1593 | else if (t->bt == btUShort && width == 8) |
dd707e8e | 1594 | tp = basic_type (btUChar, mdebugread_objfile); |
c906108c SS |
1595 | else if (t->bt == btEnum) |
1596 | ; | |
1597 | else | |
3e43a32a MS |
1598 | complaint (&symfile_complaints, |
1599 | _("can't handle TIR fBitfield for %s"), | |
23136709 | 1600 | sym_name); |
c906108c SS |
1601 | } |
1602 | else | |
c5aa993b | 1603 | *bs = width; |
c906108c SS |
1604 | ax++; |
1605 | } | |
1606 | ||
1607 | /* A btIndirect entry cross references to an aux entry containing | |
1608 | the type. */ | |
1609 | if (t->bt == btIndirect) | |
1610 | { | |
1611 | RNDXR rn[1]; | |
1612 | int rf; | |
1613 | FDR *xref_fh; | |
1614 | int xref_fd; | |
1615 | ||
1616 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
1617 | ax++; | |
1618 | if (rn->rfd == 0xfff) | |
1619 | { | |
1620 | rf = AUX_GET_ISYM (bigend, ax); | |
1621 | ax++; | |
1622 | } | |
1623 | else | |
1624 | rf = rn->rfd; | |
1625 | ||
1626 | if (rf == -1) | |
1627 | { | |
23136709 | 1628 | complaint (&symfile_complaints, |
e2e0b3e5 | 1629 | _("unable to cross ref btIndirect for %s"), sym_name); |
dd707e8e | 1630 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1631 | } |
1632 | xref_fh = get_rfd (fd, rf); | |
1633 | xref_fd = xref_fh - debug_info->fdr; | |
1634 | tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase, | |
c5aa993b | 1635 | rn->index, (int *) NULL, xref_fh->fBigendian, sym_name); |
c906108c SS |
1636 | } |
1637 | ||
1638 | /* All these types really point to some (common) MIPS type | |
1639 | definition, and only the type-qualifiers fully identify | |
025bb325 | 1640 | them. We'll make the same effort at sharing. */ |
c906108c SS |
1641 | if (t->bt == btStruct || |
1642 | t->bt == btUnion || | |
1643 | t->bt == btEnum || | |
1644 | ||
c5aa993b JM |
1645 | /* btSet (I think) implies that the name is a tag name, not a typedef |
1646 | name. This apparently is a MIPS extension for C sets. */ | |
c906108c SS |
1647 | t->bt == btSet) |
1648 | { | |
1649 | char *name; | |
1650 | ||
1651 | /* Try to cross reference this type, build new type on failure. */ | |
1652 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1653 | if (tp == (struct type *) NULL) | |
dd707e8e | 1654 | tp = init_type (type_code, 0, 0, (char *) NULL, mdebugread_objfile); |
c906108c SS |
1655 | |
1656 | /* DEC c89 produces cross references to qualified aggregate types, | |
c5aa993b | 1657 | dereference them. */ |
c906108c SS |
1658 | while (TYPE_CODE (tp) == TYPE_CODE_PTR |
1659 | || TYPE_CODE (tp) == TYPE_CODE_ARRAY) | |
0004e5a2 | 1660 | tp = TYPE_TARGET_TYPE (tp); |
c906108c SS |
1661 | |
1662 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1663 | Any type may be returned from cross_ref if file indirect entries |
1664 | are corrupted. */ | |
c906108c SS |
1665 | if (TYPE_CODE (tp) != TYPE_CODE_STRUCT |
1666 | && TYPE_CODE (tp) != TYPE_CODE_UNION | |
1667 | && TYPE_CODE (tp) != TYPE_CODE_ENUM) | |
1668 | { | |
23136709 | 1669 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1670 | } |
1671 | else | |
1672 | { | |
c906108c SS |
1673 | /* Usually, TYPE_CODE(tp) is already type_code. The main |
1674 | exception is if we guessed wrong re struct/union/enum. | |
1675 | But for struct vs. union a wrong guess is harmless, so | |
1676 | don't complain(). */ | |
1677 | if ((TYPE_CODE (tp) == TYPE_CODE_ENUM | |
1678 | && type_code != TYPE_CODE_ENUM) | |
1679 | || (TYPE_CODE (tp) != TYPE_CODE_ENUM | |
1680 | && type_code == TYPE_CODE_ENUM)) | |
1681 | { | |
23136709 | 1682 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1683 | } |
1684 | ||
1685 | if (TYPE_CODE (tp) != type_code) | |
1686 | { | |
1687 | TYPE_CODE (tp) = type_code; | |
1688 | } | |
1689 | ||
1690 | /* Do not set the tag name if it is a compiler generated tag name | |
c5aa993b | 1691 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ |
c906108c SS |
1692 | if (name[0] == '.' || name[0] == '\0') |
1693 | TYPE_TAG_NAME (tp) = NULL; | |
1694 | else if (TYPE_TAG_NAME (tp) == NULL | |
6314a349 | 1695 | || strcmp (TYPE_TAG_NAME (tp), name) != 0) |
3e43a32a | 1696 | TYPE_TAG_NAME (tp) |
10f0c4bb TT |
1697 | = obstack_copy0 (&mdebugread_objfile->objfile_obstack, |
1698 | name, strlen (name)); | |
c906108c SS |
1699 | } |
1700 | } | |
1701 | ||
1702 | /* All these types really point to some (common) MIPS type | |
1703 | definition, and only the type-qualifiers fully identify | |
1704 | them. We'll make the same effort at sharing. | |
1705 | FIXME: We are not doing any guessing on range types. */ | |
1706 | if (t->bt == btRange) | |
1707 | { | |
1708 | char *name; | |
1709 | ||
1710 | /* Try to cross reference this type, build new type on failure. */ | |
1711 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1712 | if (tp == (struct type *) NULL) | |
dd707e8e | 1713 | tp = init_type (type_code, 0, 0, (char *) NULL, mdebugread_objfile); |
c906108c SS |
1714 | |
1715 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1716 | Any type may be returned from cross_ref if file indirect entries |
1717 | are corrupted. */ | |
c906108c SS |
1718 | if (TYPE_CODE (tp) != TYPE_CODE_RANGE) |
1719 | { | |
23136709 | 1720 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1721 | } |
1722 | else | |
1723 | { | |
1724 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
025bb325 | 1725 | exception is if we guessed wrong re struct/union/enum. */ |
c906108c SS |
1726 | if (TYPE_CODE (tp) != type_code) |
1727 | { | |
23136709 | 1728 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1729 | TYPE_CODE (tp) = type_code; |
1730 | } | |
ee300cd4 AC |
1731 | if (TYPE_NAME (tp) == NULL |
1732 | || strcmp (TYPE_NAME (tp), name) != 0) | |
10f0c4bb TT |
1733 | TYPE_NAME (tp) |
1734 | = obstack_copy0 (&mdebugread_objfile->objfile_obstack, | |
1735 | name, strlen (name)); | |
c906108c SS |
1736 | } |
1737 | } | |
1738 | if (t->bt == btTypedef) | |
1739 | { | |
1740 | char *name; | |
1741 | ||
1742 | /* Try to cross reference this type, it should succeed. */ | |
1743 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1744 | if (tp == (struct type *) NULL) | |
1745 | { | |
23136709 | 1746 | complaint (&symfile_complaints, |
e2e0b3e5 | 1747 | _("unable to cross ref btTypedef for %s"), sym_name); |
dd707e8e | 1748 | tp = basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1749 | } |
1750 | } | |
1751 | ||
025bb325 | 1752 | /* Deal with range types. */ |
c906108c SS |
1753 | if (t->bt == btRange) |
1754 | { | |
43bbcdc2 PH |
1755 | TYPE_NFIELDS (tp) = 0; |
1756 | TYPE_RANGE_DATA (tp) = ((struct range_bounds *) | |
1757 | TYPE_ZALLOC (tp, sizeof (struct range_bounds))); | |
262452ec | 1758 | TYPE_LOW_BOUND (tp) = AUX_GET_DNLOW (bigend, ax); |
c906108c | 1759 | ax++; |
262452ec | 1760 | TYPE_HIGH_BOUND (tp) = AUX_GET_DNHIGH (bigend, ax); |
c906108c SS |
1761 | ax++; |
1762 | } | |
1763 | ||
025bb325 MS |
1764 | /* Parse all the type qualifiers now. If there are more |
1765 | than 6 the game will continue in the next aux. */ | |
c906108c SS |
1766 | |
1767 | while (1) | |
1768 | { | |
1769 | #define PARSE_TQ(tq) \ | |
1770 | if (t->tq != tqNil) \ | |
1771 | ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \ | |
1772 | else \ | |
1773 | break; | |
1774 | ||
1775 | PARSE_TQ (tq0); | |
1776 | PARSE_TQ (tq1); | |
1777 | PARSE_TQ (tq2); | |
1778 | PARSE_TQ (tq3); | |
1779 | PARSE_TQ (tq4); | |
1780 | PARSE_TQ (tq5); | |
1781 | #undef PARSE_TQ | |
1782 | ||
1783 | /* mips cc 2.x and gcc never put out continued aux entries. */ | |
1784 | if (!t->continued) | |
1785 | break; | |
1786 | ||
1787 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1788 | ax++; | |
1789 | } | |
1790 | ||
1791 | /* Complain for illegal continuations due to corrupt aux entries. */ | |
1792 | if (t->continued) | |
3e43a32a MS |
1793 | complaint (&symfile_complaints, |
1794 | _("illegal TIR continued for %s"), sym_name); | |
c5aa993b | 1795 | |
c906108c SS |
1796 | return tp; |
1797 | } | |
1798 | ||
1799 | /* Make up a complex type from a basic one. Type is passed by | |
025bb325 | 1800 | reference in TPP and side-effected as necessary. The type |
c906108c SS |
1801 | qualifier TQ says how to handle the aux symbols at AX for |
1802 | the symbol SX we are currently analyzing. BIGEND says whether | |
1803 | aux symbols are big-endian or little-endian. | |
025bb325 | 1804 | Returns the number of aux symbols we parsed. */ |
c906108c SS |
1805 | |
1806 | static int | |
fba45db2 KB |
1807 | upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend, |
1808 | char *sym_name) | |
c906108c SS |
1809 | { |
1810 | int off; | |
1811 | struct type *t; | |
1812 | ||
025bb325 | 1813 | /* Used in array processing. */ |
c906108c SS |
1814 | int rf, id; |
1815 | FDR *fh; | |
1816 | struct type *range; | |
1817 | struct type *indx; | |
1818 | int lower, upper; | |
1819 | RNDXR rndx; | |
1820 | ||
1821 | switch (tq) | |
1822 | { | |
1823 | case tqPtr: | |
1824 | t = lookup_pointer_type (*tpp); | |
1825 | *tpp = t; | |
1826 | return 0; | |
1827 | ||
1828 | case tqProc: | |
1829 | t = lookup_function_type (*tpp); | |
1830 | *tpp = t; | |
1831 | return 0; | |
1832 | ||
1833 | case tqArray: | |
1834 | off = 0; | |
1835 | ||
025bb325 | 1836 | /* Determine and record the domain type (type of index). */ |
c906108c SS |
1837 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx); |
1838 | id = rndx.index; | |
1839 | rf = rndx.rfd; | |
1840 | if (rf == 0xfff) | |
1841 | { | |
1842 | ax++; | |
1843 | rf = AUX_GET_ISYM (bigend, ax); | |
1844 | off++; | |
1845 | } | |
1846 | fh = get_rfd (fd, rf); | |
1847 | ||
1848 | indx = parse_type (fh - debug_info->fdr, | |
1849 | debug_info->external_aux + fh->iauxBase, | |
1850 | id, (int *) NULL, bigend, sym_name); | |
1851 | ||
1852 | /* The bounds type should be an integer type, but might be anything | |
c5aa993b | 1853 | else due to corrupt aux entries. */ |
c906108c SS |
1854 | if (TYPE_CODE (indx) != TYPE_CODE_INT) |
1855 | { | |
23136709 | 1856 | complaint (&symfile_complaints, |
3e43a32a MS |
1857 | _("illegal array index type for %s, assuming int"), |
1858 | sym_name); | |
dd707e8e | 1859 | indx = objfile_type (mdebugread_objfile)->builtin_int; |
c906108c SS |
1860 | } |
1861 | ||
1862 | /* Get the bounds, and create the array type. */ | |
1863 | ax++; | |
1864 | lower = AUX_GET_DNLOW (bigend, ax); | |
1865 | ax++; | |
1866 | upper = AUX_GET_DNHIGH (bigend, ax); | |
1867 | ax++; | |
1868 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ | |
1869 | ||
0c9c3474 SA |
1870 | range = create_static_range_type ((struct type *) NULL, indx, |
1871 | lower, upper); | |
c906108c SS |
1872 | |
1873 | t = create_array_type ((struct type *) NULL, *tpp, range); | |
1874 | ||
1875 | /* We used to fill in the supplied array element bitsize | |
c5aa993b JM |
1876 | here if the TYPE_LENGTH of the target type was zero. |
1877 | This happens for a `pointer to an array of anonymous structs', | |
1878 | but in this case the array element bitsize is also zero, | |
1879 | so nothing is gained. | |
1880 | And we used to check the TYPE_LENGTH of the target type against | |
1881 | the supplied array element bitsize. | |
1882 | gcc causes a mismatch for `pointer to array of object', | |
1883 | since the sdb directives it uses do not have a way of | |
1884 | specifying the bitsize, but it does no harm (the | |
1885 | TYPE_LENGTH should be correct) and we should be able to | |
1886 | ignore the erroneous bitsize from the auxiliary entry safely. | |
1887 | dbx seems to ignore it too. */ | |
c906108c | 1888 | |
d6a843b5 | 1889 | /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */ |
c906108c | 1890 | if (TYPE_LENGTH (*tpp) == 0) |
d6a843b5 | 1891 | TYPE_TARGET_STUB (t) = 1; |
c906108c SS |
1892 | |
1893 | *tpp = t; | |
1894 | return 4 + off; | |
1895 | ||
1896 | case tqVol: | |
1897 | /* Volatile -- currently ignored */ | |
1898 | return 0; | |
1899 | ||
1900 | case tqConst: | |
1901 | /* Const -- currently ignored */ | |
1902 | return 0; | |
1903 | ||
1904 | default: | |
e2e0b3e5 | 1905 | complaint (&symfile_complaints, _("unknown type qualifier 0x%x"), tq); |
c906108c SS |
1906 | return 0; |
1907 | } | |
1908 | } | |
1909 | ||
1910 | ||
1911 | /* Parse a procedure descriptor record PR. Note that the procedure is | |
1912 | parsed _after_ the local symbols, now we just insert the extra | |
f92761ec | 1913 | information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has |
c906108c SS |
1914 | already been placed in the procedure's main block. Note also that |
1915 | images that have been partially stripped (ld -x) have been deprived | |
1916 | of local symbols, and we have to cope with them here. FIRST_OFF is | |
1917 | the offset of the first procedure for this FDR; we adjust the | |
1918 | address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab | |
f92761ec | 1919 | to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol |
c906108c SS |
1920 | in question, or NULL to use top_stack->cur_block. */ |
1921 | ||
c906108c | 1922 | static void |
fba45db2 KB |
1923 | parse_procedure (PDR *pr, struct symtab *search_symtab, |
1924 | struct partial_symtab *pst) | |
c906108c SS |
1925 | { |
1926 | struct symbol *s, *i; | |
3977b71f | 1927 | const struct block *b; |
c906108c SS |
1928 | char *sh_name; |
1929 | ||
025bb325 | 1930 | /* Simple rule to find files linked "-x". */ |
c906108c SS |
1931 | if (cur_fdr->rss == -1) |
1932 | { | |
1933 | if (pr->isym == -1) | |
1934 | { | |
025bb325 | 1935 | /* Static procedure at address pr->adr. Sigh. */ |
c906108c | 1936 | /* FIXME-32x64. assuming pr->adr fits in long. */ |
23136709 | 1937 | complaint (&symfile_complaints, |
e2e0b3e5 | 1938 | _("can't handle PDR for static proc at 0x%lx"), |
23136709 | 1939 | (unsigned long) pr->adr); |
c906108c SS |
1940 | return; |
1941 | } | |
1942 | else | |
1943 | { | |
1944 | /* external */ | |
1945 | EXTR she; | |
c5aa993b | 1946 | |
c906108c SS |
1947 | (*debug_swap->swap_ext_in) (cur_bfd, |
1948 | ((char *) debug_info->external_ext | |
1949 | + (pr->isym | |
1950 | * debug_swap->external_ext_size)), | |
1951 | &she); | |
1952 | sh_name = debug_info->ssext + she.asym.iss; | |
1953 | } | |
1954 | } | |
1955 | else | |
1956 | { | |
1957 | /* Full symbols */ | |
1958 | SYMR sh; | |
1959 | ||
1960 | (*debug_swap->swap_sym_in) (cur_bfd, | |
1961 | ((char *) debug_info->external_sym | |
1962 | + ((cur_fdr->isymBase + pr->isym) | |
1963 | * debug_swap->external_sym_size)), | |
1964 | &sh); | |
1965 | sh_name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
1966 | } | |
1967 | ||
1968 | if (search_symtab != NULL) | |
1969 | { | |
1970 | #if 0 | |
1971 | /* This loses both in the case mentioned (want a static, find a global), | |
c5aa993b JM |
1972 | but also if we are looking up a non-mangled name which happens to |
1973 | match the name of a mangled function. */ | |
c906108c | 1974 | /* We have to save the cur_fdr across the call to lookup_symbol. |
c5aa993b JM |
1975 | If the pdr is for a static function and if a global function with |
1976 | the same name exists, lookup_symbol will eventually read in the symtab | |
1977 | for the global function and clobber cur_fdr. */ | |
c906108c | 1978 | FDR *save_cur_fdr = cur_fdr; |
b8d56208 | 1979 | |
2570f2b7 | 1980 | s = lookup_symbol (sh_name, NULL, VAR_DOMAIN, 0); |
c906108c SS |
1981 | cur_fdr = save_cur_fdr; |
1982 | #else | |
1983 | s = mylookup_symbol | |
1984 | (sh_name, | |
1985 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK), | |
176620f1 | 1986 | VAR_DOMAIN, |
c906108c SS |
1987 | LOC_BLOCK); |
1988 | #endif | |
1989 | } | |
1990 | else | |
1991 | s = mylookup_symbol (sh_name, top_stack->cur_block, | |
176620f1 | 1992 | VAR_DOMAIN, LOC_BLOCK); |
c906108c SS |
1993 | |
1994 | if (s != 0) | |
1995 | { | |
1996 | b = SYMBOL_BLOCK_VALUE (s); | |
1997 | } | |
1998 | else | |
1999 | { | |
e2e0b3e5 | 2000 | complaint (&symfile_complaints, _("PDR for %s, but no symbol"), sh_name); |
c906108c SS |
2001 | #if 1 |
2002 | return; | |
2003 | #else | |
2004 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ | |
2005 | s = new_symbol (sh_name); | |
176620f1 | 2006 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
c906108c | 2007 | SYMBOL_CLASS (s) = LOC_BLOCK; |
025bb325 | 2008 | /* Donno its type, hope int is ok. */ |
0a9d309a | 2009 | SYMBOL_TYPE (s) |
46bf5051 | 2010 | = lookup_function_type (objfile_type (pst->objfile)->builtin_int); |
c7efd0b9 | 2011 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
025bb325 | 2012 | /* Won't have symbols for this one. */ |
c906108c SS |
2013 | b = new_block (2); |
2014 | SYMBOL_BLOCK_VALUE (s) = b; | |
2015 | BLOCK_FUNCTION (b) = s; | |
2016 | BLOCK_START (b) = pr->adr; | |
2017 | /* BOUND used to be the end of procedure's text, but the | |
c5aa993b | 2018 | argument is no longer passed in. */ |
c906108c SS |
2019 | BLOCK_END (b) = bound; |
2020 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
2021 | add_block (b, top_stack->cur_st); | |
2022 | #endif | |
2023 | } | |
2024 | ||
f92761ec | 2025 | i = mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME, b, LABEL_DOMAIN, LOC_CONST); |
c906108c SS |
2026 | |
2027 | if (i) | |
2028 | { | |
9918cab9 JB |
2029 | struct mdebug_extra_func_info *e; |
2030 | ||
2031 | e = (struct mdebug_extra_func_info *) SYMBOL_VALUE_BYTES (i); | |
c906108c | 2032 | e->pdr = *pr; |
c906108c SS |
2033 | |
2034 | /* GDB expects the absolute function start address for the | |
c5aa993b JM |
2035 | procedure descriptor in e->pdr.adr. |
2036 | As the address in the procedure descriptor is usually relative, | |
2037 | we would have to relocate e->pdr.adr with cur_fdr->adr and | |
b8fbeb18 | 2038 | ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)). |
c5aa993b JM |
2039 | Unfortunately cur_fdr->adr and e->pdr.adr are both absolute |
2040 | in shared libraries on some systems, and on other systems | |
2041 | e->pdr.adr is sometimes offset by a bogus value. | |
2042 | To work around these problems, we replace e->pdr.adr with | |
2043 | the start address of the function. */ | |
c906108c | 2044 | e->pdr.adr = BLOCK_START (b); |
c906108c SS |
2045 | } |
2046 | ||
2047 | /* It would be reasonable that functions that have been compiled | |
2048 | without debugging info have a btNil type for their return value, | |
2049 | and functions that are void and are compiled with debugging info | |
2050 | have btVoid. | |
2051 | gcc and DEC f77 put out btNil types for both cases, so btNil is mapped | |
2052 | to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info' | |
2053 | case right. | |
2054 | The glevel field in cur_fdr could be used to determine the presence | |
2055 | of debugging info, but GCC doesn't always pass the -g switch settings | |
2056 | to the assembler and GAS doesn't set the glevel field from the -g switch | |
2057 | settings. | |
2058 | To work around these problems, the return value type of a TYPE_CODE_VOID | |
2059 | function is adjusted accordingly if no debugging info was found in the | |
2060 | compilation unit. */ | |
c5aa993b | 2061 | |
c906108c SS |
2062 | if (processing_gcc_compilation == 0 |
2063 | && found_ecoff_debugging_info == 0 | |
2064 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID) | |
5c80ed9d | 2065 | SYMBOL_TYPE (s) = objfile_type (mdebugread_objfile)->nodebug_text_symbol; |
c906108c SS |
2066 | } |
2067 | ||
025bb325 | 2068 | /* Parse the external symbol ES. Just call parse_symbol() after |
c906108c SS |
2069 | making sure we know where the aux are for it. |
2070 | BIGEND says whether aux entries are big-endian or little-endian. | |
2071 | ||
025bb325 | 2072 | This routine clobbers top_stack->cur_block and ->cur_st. */ |
c906108c | 2073 | |
a14ed312 KB |
2074 | static void parse_external (EXTR *, int, struct section_offsets *, |
2075 | struct objfile *); | |
c906108c SS |
2076 | |
2077 | static void | |
fba45db2 KB |
2078 | parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets, |
2079 | struct objfile *objfile) | |
c906108c SS |
2080 | { |
2081 | union aux_ext *ax; | |
2082 | ||
2083 | if (es->ifd != ifdNil) | |
2084 | { | |
2085 | cur_fd = es->ifd; | |
2086 | cur_fdr = debug_info->fdr + cur_fd; | |
2087 | ax = debug_info->external_aux + cur_fdr->iauxBase; | |
2088 | } | |
2089 | else | |
2090 | { | |
2091 | cur_fdr = debug_info->fdr; | |
2092 | ax = 0; | |
2093 | } | |
2094 | ||
2095 | /* Reading .o files */ | |
c5aa993b | 2096 | if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil) |
c906108c SS |
2097 | { |
2098 | char *what; | |
2099 | switch (es->asym.st) | |
2100 | { | |
2101 | case stNil: | |
2102 | /* These are generated for static symbols in .o files, | |
2103 | ignore them. */ | |
2104 | return; | |
2105 | case stStaticProc: | |
2106 | case stProc: | |
2107 | what = "procedure"; | |
2108 | n_undef_procs++; | |
2109 | break; | |
2110 | case stGlobal: | |
2111 | what = "variable"; | |
2112 | n_undef_vars++; | |
2113 | break; | |
2114 | case stLabel: | |
2115 | what = "label"; | |
2116 | n_undef_labels++; | |
2117 | break; | |
2118 | default: | |
2119 | what = "symbol"; | |
2120 | break; | |
2121 | } | |
2122 | n_undef_symbols++; | |
025bb325 | 2123 | /* FIXME: Turn this into a complaint? */ |
c906108c | 2124 | if (info_verbose) |
a3f17187 | 2125 | printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"), |
c906108c SS |
2126 | what, debug_info->ssext + es->asym.iss, |
2127 | fdr_name (cur_fdr)); | |
2128 | return; | |
2129 | } | |
2130 | ||
2131 | switch (es->asym.st) | |
2132 | { | |
2133 | case stProc: | |
2134 | case stStaticProc: | |
2135 | /* There is no need to parse the external procedure symbols. | |
c5aa993b JM |
2136 | If they are from objects compiled without -g, their index will |
2137 | be indexNil, and the symbol definition from the minimal symbol | |
2138 | is preferrable (yielding a function returning int instead of int). | |
2139 | If the index points to a local procedure symbol, the local | |
2140 | symbol already provides the correct type. | |
2141 | Note that the index of the external procedure symbol points | |
2142 | to the local procedure symbol in the local symbol table, and | |
2143 | _not_ to the auxiliary symbol info. */ | |
c906108c SS |
2144 | break; |
2145 | case stGlobal: | |
2146 | case stLabel: | |
2147 | /* Global common symbols are resolved by the runtime loader, | |
c5aa993b JM |
2148 | ignore them. */ |
2149 | if (SC_IS_COMMON (es->asym.sc)) | |
c906108c SS |
2150 | break; |
2151 | ||
2152 | /* Note that the case of a symbol with indexNil must be handled | |
c5aa993b | 2153 | anyways by parse_symbol(). */ |
3e43a32a MS |
2154 | parse_symbol (&es->asym, ax, (char *) NULL, |
2155 | bigend, section_offsets, objfile); | |
c906108c SS |
2156 | break; |
2157 | default: | |
2158 | break; | |
2159 | } | |
2160 | } | |
2161 | ||
2162 | /* Parse the line number info for file descriptor FH into | |
2163 | GDB's linetable LT. MIPS' encoding requires a little bit | |
2164 | of magic to get things out. Note also that MIPS' line | |
2165 | numbers can go back and forth, apparently we can live | |
025bb325 | 2166 | with that and do not need to reorder our linetables. */ |
c906108c | 2167 | |
a14ed312 KB |
2168 | static void parse_lines (FDR *, PDR *, struct linetable *, int, |
2169 | struct partial_symtab *, CORE_ADDR); | |
c906108c SS |
2170 | |
2171 | static void | |
fba45db2 KB |
2172 | parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines, |
2173 | struct partial_symtab *pst, CORE_ADDR lowest_pdr_addr) | |
c906108c SS |
2174 | { |
2175 | unsigned char *base; | |
2176 | int j, k; | |
2177 | int delta, count, lineno = 0; | |
2178 | ||
2179 | if (fh->cbLine == 0) | |
2180 | return; | |
2181 | ||
025bb325 | 2182 | /* Scan by procedure descriptors. */ |
c906108c SS |
2183 | k = 0; |
2184 | for (j = 0; j < fh->cpd; j++, pr++) | |
2185 | { | |
2186 | CORE_ADDR l; | |
2187 | CORE_ADDR adr; | |
2188 | unsigned char *halt; | |
2189 | ||
025bb325 | 2190 | /* No code for this one. */ |
c906108c SS |
2191 | if (pr->iline == ilineNil || |
2192 | pr->lnLow == -1 || pr->lnHigh == -1) | |
2193 | continue; | |
2194 | ||
2195 | /* Determine start and end address of compressed line bytes for | |
c5aa993b | 2196 | this procedure. */ |
c906108c SS |
2197 | base = debug_info->line + fh->cbLineOffset; |
2198 | if (j != (fh->cpd - 1)) | |
c5aa993b | 2199 | halt = base + pr[1].cbLineOffset; |
c906108c | 2200 | else |
c5aa993b | 2201 | halt = base + fh->cbLine; |
c906108c SS |
2202 | base += pr->cbLineOffset; |
2203 | ||
5afc051b | 2204 | adr = pst->textlow + pr->adr - lowest_pdr_addr; |
c906108c SS |
2205 | |
2206 | l = adr >> 2; /* in words */ | |
c5aa993b | 2207 | for (lineno = pr->lnLow; base < halt;) |
c906108c SS |
2208 | { |
2209 | count = *base & 0x0f; | |
2210 | delta = *base++ >> 4; | |
2211 | if (delta >= 8) | |
2212 | delta -= 16; | |
2213 | if (delta == -8) | |
2214 | { | |
2215 | delta = (base[0] << 8) | base[1]; | |
2216 | if (delta >= 0x8000) | |
2217 | delta -= 0x10000; | |
2218 | base += 2; | |
2219 | } | |
2220 | lineno += delta; /* first delta is 0 */ | |
2221 | ||
025bb325 | 2222 | /* Complain if the line table overflows. Could happen |
c906108c SS |
2223 | with corrupt binaries. */ |
2224 | if (lt->nitems >= maxlines) | |
2225 | { | |
23136709 | 2226 | complaint (&symfile_complaints, |
e2e0b3e5 | 2227 | _("guessed size of linetable for %s incorrectly"), |
23136709 | 2228 | fdr_name (fh)); |
c906108c SS |
2229 | break; |
2230 | } | |
2231 | k = add_line (lt, lineno, l, k); | |
2232 | l += count + 1; | |
2233 | } | |
2234 | } | |
2235 | } | |
2236 | \f | |
23136709 KB |
2237 | static void |
2238 | function_outside_compilation_unit_complaint (const char *arg1) | |
2239 | { | |
2240 | complaint (&symfile_complaints, | |
3e43a32a MS |
2241 | _("function `%s' appears to be defined " |
2242 | "outside of all compilation units"), | |
23136709 KB |
2243 | arg1); |
2244 | } | |
2245 | ||
1f9872de JB |
2246 | /* Use the STORAGE_CLASS to compute which section the given symbol |
2247 | belongs to, and then records this new minimal symbol. */ | |
2248 | ||
2249 | static void | |
2250 | record_minimal_symbol (const char *name, const CORE_ADDR address, | |
2251 | enum minimal_symbol_type ms_type, int storage_class, | |
2252 | struct objfile *objfile) | |
2253 | { | |
2254 | int section; | |
1f9872de JB |
2255 | |
2256 | switch (storage_class) | |
2257 | { | |
2258 | case scText: | |
2259 | section = SECT_OFF_TEXT (objfile); | |
1f9872de JB |
2260 | break; |
2261 | case scData: | |
2262 | section = SECT_OFF_DATA (objfile); | |
1f9872de JB |
2263 | break; |
2264 | case scBss: | |
2265 | section = SECT_OFF_BSS (objfile); | |
1f9872de JB |
2266 | break; |
2267 | case scSData: | |
2268 | section = get_section_index (objfile, ".sdata"); | |
1f9872de JB |
2269 | break; |
2270 | case scSBss: | |
2271 | section = get_section_index (objfile, ".sbss"); | |
1f9872de JB |
2272 | break; |
2273 | case scRData: | |
2274 | section = get_section_index (objfile, ".rdata"); | |
1f9872de JB |
2275 | break; |
2276 | case scInit: | |
2277 | section = get_section_index (objfile, ".init"); | |
1f9872de JB |
2278 | break; |
2279 | case scXData: | |
2280 | section = get_section_index (objfile, ".xdata"); | |
1f9872de JB |
2281 | break; |
2282 | case scPData: | |
2283 | section = get_section_index (objfile, ".pdata"); | |
1f9872de JB |
2284 | break; |
2285 | case scFini: | |
2286 | section = get_section_index (objfile, ".fini"); | |
1f9872de JB |
2287 | break; |
2288 | case scRConst: | |
2289 | section = get_section_index (objfile, ".rconst"); | |
1f9872de JB |
2290 | break; |
2291 | #ifdef scTlsData | |
2292 | case scTlsData: | |
2293 | section = get_section_index (objfile, ".tlsdata"); | |
1f9872de JB |
2294 | break; |
2295 | #endif | |
2296 | #ifdef scTlsBss | |
2297 | case scTlsBss: | |
2298 | section = get_section_index (objfile, ".tlsbss"); | |
1f9872de JB |
2299 | break; |
2300 | #endif | |
2301 | default: | |
2302 | /* This kind of symbol is not associated to a section. */ | |
2303 | section = -1; | |
1f9872de JB |
2304 | } |
2305 | ||
b887350f | 2306 | prim_record_minimal_symbol_and_info (name, address, ms_type, |
e6dc44a8 | 2307 | section, objfile); |
1f9872de JB |
2308 | } |
2309 | ||
c906108c SS |
2310 | /* Master parsing procedure for first-pass reading of file symbols |
2311 | into a partial_symtab. */ | |
2312 | ||
2313 | static void | |
fba45db2 | 2314 | parse_partial_symbols (struct objfile *objfile) |
c906108c | 2315 | { |
5e2b427d | 2316 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
2317 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; |
2318 | const bfd_size_type external_rfd_size = debug_swap->external_rfd_size; | |
2319 | const bfd_size_type external_ext_size = debug_swap->external_ext_size; | |
12b9c64f AO |
2320 | void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in; |
2321 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; | |
2322 | void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in; | |
c906108c SS |
2323 | int f_idx, s_idx; |
2324 | HDRR *hdr = &debug_info->symbolic_header; | |
2325 | /* Running pointers */ | |
2326 | FDR *fh; | |
2327 | char *ext_out; | |
2328 | char *ext_out_end; | |
2329 | EXTR *ext_block; | |
52f0bd74 | 2330 | EXTR *ext_in; |
c906108c SS |
2331 | EXTR *ext_in_end; |
2332 | SYMR sh; | |
2333 | struct partial_symtab *pst; | |
2334 | int textlow_not_set = 1; | |
2335 | int past_first_source_file = 0; | |
2336 | ||
025bb325 | 2337 | /* List of current psymtab's include files. */ |
0d5cff50 | 2338 | const char **psymtab_include_list; |
c906108c SS |
2339 | int includes_allocated; |
2340 | int includes_used; | |
2341 | EXTR *extern_tab; | |
2342 | struct pst_map *fdr_to_pst; | |
025bb325 | 2343 | /* Index within current psymtab dependency list. */ |
c906108c SS |
2344 | struct partial_symtab **dependency_list; |
2345 | int dependencies_used, dependencies_allocated; | |
2346 | struct cleanup *old_chain; | |
2347 | char *name; | |
2348 | enum language prev_language; | |
2349 | asection *text_sect; | |
2350 | int relocatable = 0; | |
2351 | ||
2352 | /* Irix 5.2 shared libraries have a fh->adr field of zero, but | |
2353 | the shared libraries are prelinked at a high memory address. | |
2354 | We have to adjust the start address of the object file for this case, | |
2355 | by setting it to the start address of the first procedure in the file. | |
2356 | But we should do no adjustments if we are debugging a .o file, where | |
2357 | the text section (and fh->adr) really starts at zero. */ | |
2358 | text_sect = bfd_get_section_by_name (cur_bfd, ".text"); | |
2359 | if (text_sect != NULL | |
2360 | && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC)) | |
2361 | relocatable = 1; | |
2362 | ||
8b92e4d5 | 2363 | extern_tab = (EXTR *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2364 | sizeof (EXTR) * hdr->iextMax); |
2365 | ||
2366 | includes_allocated = 30; | |
2367 | includes_used = 0; | |
0d5cff50 DE |
2368 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2369 | sizeof (const char *)); | |
c906108c SS |
2370 | next_symbol_text_func = mdebug_next_symbol_text; |
2371 | ||
2372 | dependencies_allocated = 30; | |
2373 | dependencies_used = 0; | |
2374 | dependency_list = | |
2375 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2376 | sizeof (struct partial_symtab *)); | |
2377 | ||
46212e0b | 2378 | set_last_source_file (NULL); |
c906108c SS |
2379 | |
2380 | /* | |
2381 | * Big plan: | |
2382 | * | |
2383 | * Only parse the Local and External symbols, and the Relative FDR. | |
2384 | * Fixup enough of the loader symtab to be able to use it. | |
2385 | * Allocate space only for the file's portions we need to | |
025bb325 | 2386 | * look at. (XXX) |
c906108c SS |
2387 | */ |
2388 | ||
2389 | max_gdbinfo = 0; | |
2390 | max_glevel = MIN_GLEVEL; | |
2391 | ||
2392 | /* Allocate the map FDR -> PST. | |
2393 | Minor hack: -O3 images might claim some global data belongs | |
025bb325 | 2394 | to FDR -1. We`ll go along with that. */ |
3e43a32a MS |
2395 | fdr_to_pst = (struct pst_map *) |
2396 | xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst); | |
b8c9b27d | 2397 | old_chain = make_cleanup (xfree, fdr_to_pst); |
c906108c SS |
2398 | fdr_to_pst++; |
2399 | { | |
d4f3574e | 2400 | struct partial_symtab *pst = new_psymtab ("", objfile); |
b8d56208 | 2401 | |
c906108c SS |
2402 | fdr_to_pst[-1].pst = pst; |
2403 | FDR_IDX (pst) = -1; | |
2404 | } | |
2405 | ||
2406 | /* Allocate the global pending list. */ | |
2407 | pending_list = | |
2408 | ((struct mdebug_pending **) | |
8b92e4d5 | 2409 | obstack_alloc (&objfile->objfile_obstack, |
c906108c | 2410 | hdr->ifdMax * sizeof (struct mdebug_pending *))); |
12b9c64f | 2411 | memset (pending_list, 0, |
c906108c SS |
2412 | hdr->ifdMax * sizeof (struct mdebug_pending *)); |
2413 | ||
2414 | /* Pass 0 over external syms: swap them in. */ | |
2415 | ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR)); | |
b8c9b27d | 2416 | make_cleanup (xfree, ext_block); |
c906108c SS |
2417 | |
2418 | ext_out = (char *) debug_info->external_ext; | |
2419 | ext_out_end = ext_out + hdr->iextMax * external_ext_size; | |
2420 | ext_in = ext_block; | |
2421 | for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) | |
2422 | (*swap_ext_in) (cur_bfd, ext_out, ext_in); | |
2423 | ||
025bb325 | 2424 | /* Pass 1 over external syms: Presize and partition the list. */ |
c906108c SS |
2425 | ext_in = ext_block; |
2426 | ext_in_end = ext_in + hdr->iextMax; | |
2427 | for (; ext_in < ext_in_end; ext_in++) | |
2428 | { | |
2429 | /* See calls to complain below. */ | |
2430 | if (ext_in->ifd >= -1 | |
2431 | && ext_in->ifd < hdr->ifdMax | |
2432 | && ext_in->asym.iss >= 0 | |
2433 | && ext_in->asym.iss < hdr->issExtMax) | |
2434 | fdr_to_pst[ext_in->ifd].n_globals++; | |
2435 | } | |
2436 | ||
025bb325 | 2437 | /* Pass 1.5 over files: partition out global symbol space. */ |
c906108c SS |
2438 | s_idx = 0; |
2439 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) | |
2440 | { | |
2441 | fdr_to_pst[f_idx].globals_offset = s_idx; | |
2442 | s_idx += fdr_to_pst[f_idx].n_globals; | |
2443 | fdr_to_pst[f_idx].n_globals = 0; | |
2444 | } | |
2445 | ||
2446 | /* ECOFF in ELF: | |
2447 | ||
2448 | For ECOFF in ELF, we skip the creation of the minimal symbols. | |
2449 | The ECOFF symbols should be a subset of the Elf symbols, and the | |
2450 | section information of the elf symbols will be more accurate. | |
2451 | FIXME! What about Irix 5's native linker? | |
2452 | ||
2453 | By default, Elf sections which don't exist in ECOFF | |
2454 | get put in ECOFF's absolute section by the gnu linker. | |
2455 | Since absolute sections don't get relocated, we | |
2456 | end up calculating an address different from that of | |
2457 | the symbol's minimal symbol (created earlier from the | |
025bb325 | 2458 | Elf symtab). |
c906108c SS |
2459 | |
2460 | To fix this, either : | |
2461 | 1) don't create the duplicate symbol | |
c5aa993b JM |
2462 | (assumes ECOFF symtab is a subset of the ELF symtab; |
2463 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2464 | 2) create it, only if lookup for existing symbol in ELF's minimal |
c5aa993b JM |
2465 | symbols fails |
2466 | (inefficient; | |
2467 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2468 | 3) create it, but lookup ELF's minimal symbol and use it's section |
c5aa993b JM |
2469 | during relocation, then modify "uniqify" phase to merge and |
2470 | eliminate the duplicate symbol | |
2471 | (highly inefficient) | |
c906108c SS |
2472 | |
2473 | I've implemented #1 here... | |
2474 | Skip the creation of the minimal symbols based on the ECOFF | |
025bb325 | 2475 | symbol table. */ |
c906108c | 2476 | |
025bb325 | 2477 | /* Pass 2 over external syms: fill in external symbols. */ |
c5aa993b JM |
2478 | ext_in = ext_block; |
2479 | ext_in_end = ext_in + hdr->iextMax; | |
2480 | for (; ext_in < ext_in_end; ext_in++) | |
2481 | { | |
2482 | enum minimal_symbol_type ms_type = mst_text; | |
2483 | CORE_ADDR svalue = ext_in->asym.value; | |
c906108c | 2484 | |
c5aa993b JM |
2485 | /* The Irix 5 native tools seem to sometimes generate bogus |
2486 | external symbols. */ | |
2487 | if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax) | |
2488 | { | |
23136709 | 2489 | complaint (&symfile_complaints, |
3e43a32a MS |
2490 | _("bad ifd for external symbol: %d (max %ld)"), |
2491 | ext_in->ifd, hdr->ifdMax); | |
c5aa993b JM |
2492 | continue; |
2493 | } | |
2494 | if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax) | |
2495 | { | |
23136709 | 2496 | complaint (&symfile_complaints, |
e2e0b3e5 | 2497 | _("bad iss for external symbol: %ld (max %ld)"), |
23136709 | 2498 | ext_in->asym.iss, hdr->issExtMax); |
c5aa993b JM |
2499 | continue; |
2500 | } | |
c906108c | 2501 | |
c5aa993b JM |
2502 | extern_tab[fdr_to_pst[ext_in->ifd].globals_offset |
2503 | + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; | |
c906108c SS |
2504 | |
2505 | ||
c5aa993b JM |
2506 | if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil) |
2507 | continue; | |
c906108c | 2508 | |
c906108c | 2509 | |
025bb325 | 2510 | /* Pass 3 over files, over local syms: fill in static symbols. */ |
c5aa993b JM |
2511 | name = debug_info->ssext + ext_in->asym.iss; |
2512 | ||
025bb325 | 2513 | /* Process ECOFF Symbol Types and Storage Classes. */ |
c5aa993b JM |
2514 | switch (ext_in->asym.st) |
2515 | { | |
2516 | case stProc: | |
2517 | /* Beginnning of Procedure */ | |
c5aa993b JM |
2518 | break; |
2519 | case stStaticProc: | |
2520 | /* Load time only static procs */ | |
2521 | ms_type = mst_file_text; | |
c5aa993b JM |
2522 | break; |
2523 | case stGlobal: | |
2524 | /* External symbol */ | |
2525 | if (SC_IS_COMMON (ext_in->asym.sc)) | |
2526 | { | |
2527 | /* The value of a common symbol is its size, not its address. | |
2528 | Ignore it. */ | |
c906108c | 2529 | continue; |
c5aa993b JM |
2530 | } |
2531 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2532 | { | |
2533 | ms_type = mst_data; | |
c5aa993b JM |
2534 | } |
2535 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2536 | { | |
2537 | ms_type = mst_bss; | |
c5aa993b | 2538 | } |
0e931cf0 JB |
2539 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2540 | { | |
2541 | ms_type = mst_bss; | |
0e931cf0 | 2542 | } |
c5aa993b JM |
2543 | else |
2544 | ms_type = mst_abs; | |
2545 | break; | |
2546 | case stLabel: | |
2547 | /* Label */ | |
0e931cf0 JB |
2548 | |
2549 | /* On certain platforms, some extra label symbols can be | |
025bb325 | 2550 | generated by the linker. One possible usage for this kind |
0e931cf0 | 2551 | of symbols is to represent the address of the begining of a |
025bb325 | 2552 | given section. For instance, on Tru64 5.1, the address of |
0e931cf0 JB |
2553 | the _ftext label is the start address of the .text section. |
2554 | ||
2555 | The storage class of these symbols is usually directly | |
025bb325 | 2556 | related to the section to which the symbol refers. For |
0e931cf0 JB |
2557 | instance, on Tru64 5.1, the storage class for the _fdata |
2558 | label is scData, refering to the .data section. | |
2559 | ||
2560 | It is actually possible that the section associated to the | |
025bb325 | 2561 | storage class of the label does not exist. On True64 5.1 |
0e931cf0 JB |
2562 | for instance, the libm.so shared library does not contain |
2563 | any .data section, although it contains a _fpdata label | |
025bb325 | 2564 | which storage class is scData... Since these symbols are |
0e931cf0 | 2565 | usually useless for the debugger user anyway, we just |
025bb325 | 2566 | discard these symbols. */ |
0e931cf0 | 2567 | |
c5aa993b JM |
2568 | if (SC_IS_TEXT (ext_in->asym.sc)) |
2569 | { | |
0e931cf0 JB |
2570 | if (objfile->sect_index_text == -1) |
2571 | continue; | |
2572 | ||
c5aa993b | 2573 | ms_type = mst_file_text; |
c5aa993b JM |
2574 | } |
2575 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2576 | { | |
0e931cf0 JB |
2577 | if (objfile->sect_index_data == -1) |
2578 | continue; | |
2579 | ||
c5aa993b | 2580 | ms_type = mst_file_data; |
c5aa993b JM |
2581 | } |
2582 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2583 | { | |
0e931cf0 JB |
2584 | if (objfile->sect_index_bss == -1) |
2585 | continue; | |
2586 | ||
c5aa993b | 2587 | ms_type = mst_file_bss; |
c5aa993b | 2588 | } |
0e931cf0 JB |
2589 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2590 | { | |
2591 | const int sbss_sect_index = get_section_index (objfile, ".sbss"); | |
2592 | ||
2593 | if (sbss_sect_index == -1) | |
2594 | continue; | |
2595 | ||
2596 | ms_type = mst_file_bss; | |
0e931cf0 | 2597 | } |
c5aa993b JM |
2598 | else |
2599 | ms_type = mst_abs; | |
2600 | break; | |
2601 | case stLocal: | |
2602 | case stNil: | |
2603 | /* The alpha has the section start addresses in stLocal symbols | |
025bb325 | 2604 | whose name starts with a `.'. Skip those but complain for all |
c5aa993b JM |
2605 | other stLocal symbols. |
2606 | Irix6 puts the section start addresses in stNil symbols, skip | |
025bb325 | 2607 | those too. */ |
c5aa993b JM |
2608 | if (name[0] == '.') |
2609 | continue; | |
2610 | /* Fall through. */ | |
2611 | default: | |
2612 | ms_type = mst_unknown; | |
23136709 | 2613 | unknown_ext_complaint (name); |
c5aa993b JM |
2614 | } |
2615 | if (!ECOFF_IN_ELF (cur_bfd)) | |
1f9872de JB |
2616 | record_minimal_symbol (name, svalue, ms_type, ext_in->asym.sc, |
2617 | objfile); | |
c5aa993b | 2618 | } |
c906108c | 2619 | |
025bb325 | 2620 | /* Pass 3 over files, over local syms: fill in static symbols. */ |
c906108c SS |
2621 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) |
2622 | { | |
2623 | struct partial_symtab *save_pst; | |
2624 | EXTR *ext_ptr; | |
2625 | CORE_ADDR textlow; | |
2626 | ||
2627 | cur_fdr = fh = debug_info->fdr + f_idx; | |
2628 | ||
2629 | if (fh->csym == 0) | |
2630 | { | |
2631 | fdr_to_pst[f_idx].pst = NULL; | |
2632 | continue; | |
2633 | } | |
2634 | ||
2635 | /* Determine the start address for this object file from the | |
c5aa993b | 2636 | file header and relocate it, except for Irix 5.2 zero fh->adr. */ |
c906108c SS |
2637 | if (fh->cpd) |
2638 | { | |
2639 | textlow = fh->adr; | |
2640 | if (relocatable || textlow != 0) | |
3e43a32a MS |
2641 | textlow += ANOFFSET (objfile->section_offsets, |
2642 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2643 | } |
2644 | else | |
2645 | textlow = 0; | |
d4f3574e | 2646 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
c906108c SS |
2647 | fdr_name (fh), |
2648 | textlow, | |
2649 | objfile->global_psymbols.next, | |
2650 | objfile->static_psymbols.next); | |
e38df1d0 TT |
2651 | pst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2652 | sizeof (struct symloc)); | |
12b9c64f | 2653 | memset (pst->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
2654 | |
2655 | save_pst = pst; | |
2656 | FDR_IDX (pst) = f_idx; | |
2657 | CUR_BFD (pst) = cur_bfd; | |
2658 | DEBUG_SWAP (pst) = debug_swap; | |
2659 | DEBUG_INFO (pst) = debug_info; | |
2660 | PENDING_LIST (pst) = pending_list; | |
2661 | ||
025bb325 | 2662 | /* The way to turn this into a symtab is to call... */ |
257e7a09 | 2663 | pst->read_symtab = mdebug_read_symtab; |
c906108c SS |
2664 | |
2665 | /* Set up language for the pst. | |
2666 | The language from the FDR is used if it is unambigious (e.g. cfront | |
c5aa993b JM |
2667 | with native cc and g++ will set the language to C). |
2668 | Otherwise we have to deduce the language from the filename. | |
2669 | Native ecoff has every header file in a separate FDR, so | |
2670 | deduce_language_from_filename will return language_unknown for | |
2671 | a header file, which is not what we want. | |
2672 | But the FDRs for the header files are after the FDR for the source | |
2673 | file, so we can assign the language of the source file to the | |
025bb325 | 2674 | following header files. Then we save the language in the private |
c5aa993b | 2675 | pst data so that we can reuse it when building symtabs. */ |
c906108c SS |
2676 | prev_language = psymtab_language; |
2677 | ||
2678 | switch (fh->lang) | |
2679 | { | |
2680 | case langCplusplusV2: | |
2681 | psymtab_language = language_cplus; | |
2682 | break; | |
2683 | default: | |
2684 | psymtab_language = deduce_language_from_filename (fdr_name (fh)); | |
2685 | break; | |
2686 | } | |
2687 | if (psymtab_language == language_unknown) | |
2688 | psymtab_language = prev_language; | |
2689 | PST_PRIVATE (pst)->pst_language = psymtab_language; | |
2690 | ||
5afc051b | 2691 | pst->texthigh = pst->textlow; |
c906108c SS |
2692 | |
2693 | /* For stabs-in-ecoff files, the second symbol must be @stab. | |
c5aa993b JM |
2694 | This symbol is emitted by mips-tfile to signal that the |
2695 | current object file uses encapsulated stabs instead of mips | |
2696 | ecoff for local symbols. (It is the second symbol because | |
2697 | the first symbol is the stFile used to signal the start of a | |
025bb325 | 2698 | file). */ |
c906108c SS |
2699 | processing_gcc_compilation = 0; |
2700 | if (fh->csym >= 2) | |
2701 | { | |
2702 | (*swap_sym_in) (cur_bfd, | |
2703 | ((char *) debug_info->external_sym | |
2704 | + (fh->isymBase + 1) * external_sym_size), | |
2705 | &sh); | |
ee300cd4 AC |
2706 | if (strcmp (debug_info->ss + fh->issBase + sh.iss, |
2707 | stabs_symbol) == 0) | |
c906108c SS |
2708 | processing_gcc_compilation = 2; |
2709 | } | |
2710 | ||
2711 | if (processing_gcc_compilation != 0) | |
2712 | { | |
2713 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
2714 | { | |
2715 | int type_code; | |
0d5cff50 | 2716 | const char *namestring; |
c906108c SS |
2717 | |
2718 | (*swap_sym_in) (cur_bfd, | |
2719 | (((char *) debug_info->external_sym) | |
c5aa993b | 2720 | + (fh->isymBase + cur_sdx) * external_sym_size), |
c906108c SS |
2721 | &sh); |
2722 | type_code = ECOFF_UNMARK_STAB (sh.index); | |
2723 | if (!ECOFF_IS_STAB (&sh)) | |
2724 | { | |
2725 | if (sh.st == stProc || sh.st == stStaticProc) | |
2726 | { | |
2727 | CORE_ADDR procaddr; | |
2728 | long isym; | |
c5aa993b | 2729 | |
c906108c SS |
2730 | if (sh.st == stStaticProc) |
2731 | { | |
2732 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
1f9872de JB |
2733 | record_minimal_symbol (namestring, sh.value, |
2734 | mst_file_text, sh.sc, | |
2735 | objfile); | |
c906108c | 2736 | } |
2273f0ac TT |
2737 | sh.value += ANOFFSET (objfile->section_offsets, |
2738 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2739 | procaddr = sh.value; |
2740 | ||
2741 | isym = AUX_GET_ISYM (fh->fBigendian, | |
2742 | (debug_info->external_aux | |
2743 | + fh->iauxBase | |
2744 | + sh.index)); | |
2745 | (*swap_sym_in) (cur_bfd, | |
2746 | ((char *) debug_info->external_sym | |
2747 | + ((fh->isymBase + isym - 1) | |
2748 | * external_sym_size)), | |
2749 | &sh); | |
2750 | if (sh.st == stEnd) | |
2751 | { | |
2752 | CORE_ADDR high = procaddr + sh.value; | |
2753 | ||
c5aa993b | 2754 | /* Kludge for Irix 5.2 zero fh->adr. */ |
c906108c | 2755 | if (!relocatable |
5afc051b JB |
2756 | && (pst->textlow == 0 || procaddr < pst->textlow)) |
2757 | pst->textlow = procaddr; | |
2758 | if (high > pst->texthigh) | |
2759 | pst->texthigh = high; | |
c906108c SS |
2760 | } |
2761 | } | |
2762 | else if (sh.st == stStatic) | |
2763 | { | |
2764 | switch (sh.sc) | |
2765 | { | |
2766 | case scUndefined: | |
2767 | case scSUndefined: | |
2768 | case scNil: | |
2769 | case scAbs: | |
2770 | break; | |
2771 | ||
2772 | case scData: | |
2773 | case scSData: | |
2774 | case scRData: | |
2775 | case scPData: | |
2776 | case scXData: | |
2777 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
1f9872de JB |
2778 | record_minimal_symbol (namestring, sh.value, |
2779 | mst_file_data, sh.sc, | |
2780 | objfile); | |
2273f0ac TT |
2781 | sh.value += ANOFFSET (objfile->section_offsets, |
2782 | SECT_OFF_DATA (objfile)); | |
c906108c SS |
2783 | break; |
2784 | ||
2785 | default: | |
2786 | /* FIXME! Shouldn't this use cases for bss, | |
025bb325 | 2787 | then have the default be abs? */ |
c906108c | 2788 | namestring = debug_info->ss + fh->issBase + sh.iss; |
1f9872de JB |
2789 | record_minimal_symbol (namestring, sh.value, |
2790 | mst_file_bss, sh.sc, | |
2791 | objfile); | |
2273f0ac TT |
2792 | sh.value += ANOFFSET (objfile->section_offsets, |
2793 | SECT_OFF_BSS (objfile)); | |
c906108c SS |
2794 | break; |
2795 | } | |
2796 | } | |
2797 | continue; | |
2798 | } | |
025bb325 | 2799 | /* Handle stabs continuation. */ |
c906108c SS |
2800 | { |
2801 | char *stabstring = debug_info->ss + fh->issBase + sh.iss; | |
2802 | int len = strlen (stabstring); | |
b8d56208 | 2803 | |
c5aa993b | 2804 | while (stabstring[len - 1] == '\\') |
c906108c SS |
2805 | { |
2806 | SYMR sh2; | |
2807 | char *stabstring1 = stabstring; | |
2808 | char *stabstring2; | |
2809 | int len2; | |
2810 | ||
025bb325 | 2811 | /* Ignore continuation char from 1st string. */ |
c906108c SS |
2812 | len--; |
2813 | ||
025bb325 | 2814 | /* Read next stabstring. */ |
c906108c SS |
2815 | cur_sdx++; |
2816 | (*swap_sym_in) (cur_bfd, | |
2817 | (((char *) debug_info->external_sym) | |
c5aa993b | 2818 | + (fh->isymBase + cur_sdx) |
c906108c SS |
2819 | * external_sym_size), |
2820 | &sh2); | |
2821 | stabstring2 = debug_info->ss + fh->issBase + sh2.iss; | |
2822 | len2 = strlen (stabstring2); | |
2823 | ||
025bb325 | 2824 | /* Concatinate stabstring2 with stabstring1. */ |
c906108c | 2825 | if (stabstring |
c5aa993b | 2826 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
c906108c SS |
2827 | stabstring = xrealloc (stabstring, len + len2 + 1); |
2828 | else | |
86f902e0 FF |
2829 | { |
2830 | stabstring = xmalloc (len + len2 + 1); | |
2831 | strcpy (stabstring, stabstring1); | |
2832 | } | |
c906108c SS |
2833 | strcpy (stabstring + len, stabstring2); |
2834 | len += len2; | |
2835 | } | |
2836 | ||
d3119d1e EZ |
2837 | switch (type_code) |
2838 | { | |
d3119d1e | 2839 | char *p; |
b8d56208 | 2840 | |
3e43a32a | 2841 | /* Standard, external, non-debugger, symbols. */ |
d3119d1e EZ |
2842 | |
2843 | case N_TEXT | N_EXT: | |
2844 | case N_NBTEXT | N_EXT: | |
3e43a32a MS |
2845 | sh.value += ANOFFSET (objfile->section_offsets, |
2846 | SECT_OFF_TEXT (objfile)); | |
d3119d1e EZ |
2847 | goto record_it; |
2848 | ||
2849 | case N_DATA | N_EXT: | |
2850 | case N_NBDATA | N_EXT: | |
3e43a32a MS |
2851 | sh.value += ANOFFSET (objfile->section_offsets, |
2852 | SECT_OFF_DATA (objfile)); | |
d3119d1e EZ |
2853 | goto record_it; |
2854 | ||
2855 | case N_BSS: | |
2856 | case N_BSS | N_EXT: | |
2857 | case N_NBBSS | N_EXT: | |
025bb325 | 2858 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ |
3e43a32a MS |
2859 | sh.value += ANOFFSET (objfile->section_offsets, |
2860 | SECT_OFF_BSS (objfile)); | |
d3119d1e EZ |
2861 | goto record_it; |
2862 | ||
2863 | case N_ABS | N_EXT: | |
2864 | record_it: | |
b98bd911 | 2865 | continue; |
d3119d1e | 2866 | |
025bb325 | 2867 | /* Standard, local, non-debugger, symbols. */ |
d3119d1e EZ |
2868 | |
2869 | case N_NBTEXT: | |
2870 | ||
3e43a32a MS |
2871 | /* We need to be able to deal with both N_FN or |
2872 | N_TEXT, because we have no way of knowing | |
2873 | whether the sys-supplied ld or GNU ld was used | |
2874 | to make the executable. Sequents throw in | |
2875 | another wrinkle -- they renumbered N_FN. */ | |
d3119d1e EZ |
2876 | |
2877 | case N_FN: | |
2878 | case N_FN_SEQ: | |
2879 | case N_TEXT: | |
2880 | continue; | |
2881 | ||
2882 | case N_DATA: | |
3e43a32a MS |
2883 | sh.value += ANOFFSET (objfile->section_offsets, |
2884 | SECT_OFF_DATA (objfile)); | |
d3119d1e EZ |
2885 | goto record_it; |
2886 | ||
2887 | case N_UNDF | N_EXT: | |
025bb325 | 2888 | continue; /* Just undefined, not COMMON. */ |
d3119d1e EZ |
2889 | |
2890 | case N_UNDF: | |
2891 | continue; | |
2892 | ||
2893 | /* Lots of symbol types we can just ignore. */ | |
2894 | ||
2895 | case N_ABS: | |
2896 | case N_NBDATA: | |
2897 | case N_NBBSS: | |
2898 | continue; | |
2899 | ||
025bb325 | 2900 | /* Keep going . . . */ |
d3119d1e EZ |
2901 | |
2902 | /* | |
2903 | * Special symbol types for GNU | |
2904 | */ | |
2905 | case N_INDR: | |
2906 | case N_INDR | N_EXT: | |
2907 | case N_SETA: | |
2908 | case N_SETA | N_EXT: | |
2909 | case N_SETT: | |
2910 | case N_SETT | N_EXT: | |
2911 | case N_SETD: | |
2912 | case N_SETD | N_EXT: | |
2913 | case N_SETB: | |
2914 | case N_SETB | N_EXT: | |
2915 | case N_SETV: | |
2916 | continue; | |
2917 | ||
2918 | /* | |
2919 | * Debugger symbols | |
2920 | */ | |
2921 | ||
2922 | case N_SO: | |
2923 | { | |
2924 | CORE_ADDR valu; | |
2925 | static int prev_so_symnum = -10; | |
2926 | static int first_so_symnum; | |
0ba1096a | 2927 | const char *p; |
d3119d1e EZ |
2928 | int prev_textlow_not_set; |
2929 | ||
3e43a32a MS |
2930 | valu = sh.value + ANOFFSET (objfile->section_offsets, |
2931 | SECT_OFF_TEXT (objfile)); | |
d3119d1e EZ |
2932 | |
2933 | prev_textlow_not_set = textlow_not_set; | |
2934 | ||
3e43a32a | 2935 | /* A zero value is probably an indication for the |
025bb325 | 2936 | SunPRO 3.0 compiler. end_psymtab explicitly tests |
3e43a32a | 2937 | for zero, so don't relocate it. */ |
d3119d1e | 2938 | |
203c3895 | 2939 | if (sh.value == 0 |
5e2b427d | 2940 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
d3119d1e EZ |
2941 | { |
2942 | textlow_not_set = 1; | |
2943 | valu = 0; | |
2944 | } | |
2945 | else | |
2946 | textlow_not_set = 0; | |
203c3895 | 2947 | |
d3119d1e EZ |
2948 | past_first_source_file = 1; |
2949 | ||
2950 | if (prev_so_symnum != symnum - 1) | |
025bb325 | 2951 | { /* Here if prev stab wasn't N_SO. */ |
d3119d1e EZ |
2952 | first_so_symnum = symnum; |
2953 | ||
2954 | if (pst) | |
2955 | { | |
2956 | pst = (struct partial_symtab *) 0; | |
2957 | includes_used = 0; | |
2958 | dependencies_used = 0; | |
2959 | } | |
2960 | } | |
2961 | ||
2962 | prev_so_symnum = symnum; | |
c906108c | 2963 | |
025bb325 MS |
2964 | /* End the current partial symtab and start a |
2965 | new one. */ | |
d3119d1e EZ |
2966 | |
2967 | /* SET_NAMESTRING ();*/ | |
2968 | namestring = stabstring; | |
2969 | ||
3e43a32a | 2970 | /* Null name means end of .o file. Don't start a new |
025bb325 | 2971 | one. */ |
d3119d1e EZ |
2972 | if (*namestring == '\000') |
2973 | continue; | |
2974 | ||
3e43a32a MS |
2975 | /* Some compilers (including gcc) emit a pair of |
2976 | initial N_SOs. The first one is a directory name; | |
2977 | the second the file name. If pst exists, is | |
2978 | empty, and has a filename ending in '/', we assume | |
025bb325 | 2979 | the previous N_SO was a directory name. */ |
0ba1096a KT |
2980 | p = lbasename (namestring); |
2981 | if (p != namestring && *p == '\000') | |
3e43a32a | 2982 | continue; /* Simply ignore directory |
025bb325 | 2983 | name SOs. */ |
d3119d1e | 2984 | |
3e43a32a MS |
2985 | /* Some other compilers (C++ ones in particular) emit |
2986 | useless SOs for non-existant .c files. We ignore | |
2987 | all subsequent SOs that immediately follow the | |
2988 | first. */ | |
d3119d1e EZ |
2989 | |
2990 | if (!pst) | |
2991 | pst = save_pst; | |
2992 | continue; | |
2993 | } | |
2994 | ||
2995 | case N_BINCL: | |
2996 | continue; | |
2997 | ||
2998 | case N_SOL: | |
2999 | { | |
3000 | enum language tmp_language; | |
b8d56208 | 3001 | |
025bb325 | 3002 | /* Mark down an include file in the current psymtab. */ |
d3119d1e | 3003 | |
025bb325 | 3004 | /* SET_NAMESTRING (); */ |
d3119d1e EZ |
3005 | namestring = stabstring; |
3006 | ||
3e43a32a MS |
3007 | tmp_language |
3008 | = deduce_language_from_filename (namestring); | |
d3119d1e | 3009 | |
3e43a32a MS |
3010 | /* Only change the psymtab's language if we've |
3011 | learned something useful (eg. tmp_language is not | |
3012 | language_unknown). In addition, to match what | |
3013 | start_subfile does, never change from C++ to | |
3014 | C. */ | |
d3119d1e EZ |
3015 | if (tmp_language != language_unknown |
3016 | && (tmp_language != language_c | |
3017 | || psymtab_language != language_cplus)) | |
3018 | psymtab_language = tmp_language; | |
3019 | ||
3e43a32a MS |
3020 | /* In C++, one may expect the same filename to come |
3021 | round many times, when code is coming alternately | |
3022 | from the main file and from inline functions in | |
025bb325 | 3023 | other files. So I check to see if this is a file |
3e43a32a MS |
3024 | we've seen before -- either the main source file, |
3025 | or a previously included file. | |
3026 | ||
3027 | This seems to be a lot of time to be spending on | |
3028 | N_SOL, but things like "break c-exp.y:435" need to | |
3029 | work (I suppose the psymtab_include_list could be | |
3030 | hashed or put in a binary tree, if profiling shows | |
3031 | this is a major hog). */ | |
0ba1096a | 3032 | if (pst && filename_cmp (namestring, pst->filename) == 0) |
d3119d1e | 3033 | continue; |
b8d56208 | 3034 | |
d3119d1e | 3035 | { |
aa1ee363 | 3036 | int i; |
b8d56208 | 3037 | |
d3119d1e | 3038 | for (i = 0; i < includes_used; i++) |
0ba1096a KT |
3039 | if (filename_cmp (namestring, |
3040 | psymtab_include_list[i]) == 0) | |
d3119d1e EZ |
3041 | { |
3042 | i = -1; | |
3043 | break; | |
3044 | } | |
3045 | if (i == -1) | |
3046 | continue; | |
3047 | } | |
3048 | ||
3049 | psymtab_include_list[includes_used++] = namestring; | |
3050 | if (includes_used >= includes_allocated) | |
3051 | { | |
0d5cff50 | 3052 | const char **orig = psymtab_include_list; |
d3119d1e | 3053 | |
0d5cff50 | 3054 | psymtab_include_list = (const char **) |
d3119d1e | 3055 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 3056 | sizeof (const char *)); |
4efb68b1 | 3057 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 3058 | includes_used * sizeof (const char *)); |
d3119d1e EZ |
3059 | } |
3060 | continue; | |
3061 | } | |
025bb325 | 3062 | case N_LSYM: /* Typedef or automatic variable. */ |
3e43a32a MS |
3063 | case N_STSYM: /* Data seg var -- static */ |
3064 | case N_LCSYM: /* BSS " */ | |
3065 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
3066 | case N_NBSTS: /* Gould nobase. */ | |
3067 | case N_NBLCS: /* symbols. */ | |
d3119d1e | 3068 | case N_FUN: |
3e43a32a MS |
3069 | case N_GSYM: /* Global (extern) variable; can be |
3070 | data or bss (sigh FIXME). */ | |
d3119d1e EZ |
3071 | |
3072 | /* Following may probably be ignored; I'll leave them here | |
3073 | for now (until I do Pascal and Modula 2 extensions). */ | |
3074 | ||
3e43a32a MS |
3075 | case N_PC: /* I may or may not need this; I |
3076 | suspect not. */ | |
3077 | case N_M2C: /* I suspect that I can ignore this | |
025bb325 MS |
3078 | here. */ |
3079 | case N_SCOPE: /* Same. */ | |
d3119d1e | 3080 | |
025bb325 | 3081 | /* SET_NAMESTRING (); */ |
d3119d1e EZ |
3082 | namestring = stabstring; |
3083 | p = (char *) strchr (namestring, ':'); | |
3084 | if (!p) | |
025bb325 | 3085 | continue; /* Not a debugging symbol. */ |
d3119d1e EZ |
3086 | |
3087 | ||
3088 | ||
3089 | /* Main processing section for debugging symbols which | |
3e43a32a MS |
3090 | the initial read through the symbol tables needs to |
3091 | worry about. If we reach this point, the symbol | |
3092 | which we are considering is definitely one we are | |
3093 | interested in. p must also contain the (valid) | |
3094 | index into the namestring which indicates the | |
3095 | debugging type symbol. */ | |
d3119d1e EZ |
3096 | |
3097 | switch (p[1]) | |
3098 | { | |
3099 | case 'S': | |
3e43a32a MS |
3100 | sh.value += ANOFFSET (objfile->section_offsets, |
3101 | SECT_OFF_DATA (objfile)); | |
149ad273 | 3102 | |
5e2b427d | 3103 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 3104 | namestring = gdbarch_static_transform_name |
5e2b427d | 3105 | (gdbarch, namestring); |
149ad273 | 3106 | |
04a679b8 | 3107 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3108 | VAR_DOMAIN, LOC_STATIC, |
d3119d1e EZ |
3109 | &objfile->static_psymbols, |
3110 | 0, sh.value, | |
3111 | psymtab_language, objfile); | |
3112 | continue; | |
3113 | case 'G': | |
3e43a32a MS |
3114 | sh.value += ANOFFSET (objfile->section_offsets, |
3115 | SECT_OFF_DATA (objfile)); | |
025bb325 MS |
3116 | /* The addresses in these entries are reported |
3117 | to be wrong. See the code that reads 'G's | |
3118 | for symtabs. */ | |
04a679b8 | 3119 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3120 | VAR_DOMAIN, LOC_STATIC, |
d3119d1e EZ |
3121 | &objfile->global_psymbols, |
3122 | 0, sh.value, | |
3123 | psymtab_language, objfile); | |
3124 | continue; | |
3125 | ||
3126 | case 'T': | |
3127 | /* When a 'T' entry is defining an anonymous enum, it | |
3128 | may have a name which is the empty string, or a | |
3129 | single space. Since they're not really defining a | |
3130 | symbol, those shouldn't go in the partial symbol | |
3131 | table. We do pick up the elements of such enums at | |
3132 | 'check_enum:', below. */ | |
3133 | if (p >= namestring + 2 | |
3134 | || (p == namestring + 1 | |
3135 | && namestring[0] != ' ')) | |
3136 | { | |
04a679b8 | 3137 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3138 | STRUCT_DOMAIN, LOC_TYPEDEF, |
d3119d1e EZ |
3139 | &objfile->static_psymbols, |
3140 | sh.value, 0, | |
3141 | psymtab_language, objfile); | |
3142 | if (p[2] == 't') | |
3143 | { | |
3144 | /* Also a typedef with the same name. */ | |
3e43a32a MS |
3145 | add_psymbol_to_list (namestring, |
3146 | p - namestring, 1, | |
176620f1 | 3147 | VAR_DOMAIN, LOC_TYPEDEF, |
d3119d1e EZ |
3148 | &objfile->static_psymbols, |
3149 | sh.value, 0, | |
3e43a32a MS |
3150 | psymtab_language, |
3151 | objfile); | |
d3119d1e EZ |
3152 | p += 1; |
3153 | } | |
d3119d1e EZ |
3154 | } |
3155 | goto check_enum; | |
3156 | case 't': | |
3e43a32a | 3157 | if (p != namestring) /* a name is there, not |
025bb325 | 3158 | just :T... */ |
d3119d1e | 3159 | { |
04a679b8 | 3160 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3161 | VAR_DOMAIN, LOC_TYPEDEF, |
d3119d1e EZ |
3162 | &objfile->static_psymbols, |
3163 | sh.value, 0, | |
3164 | psymtab_language, objfile); | |
3165 | } | |
3166 | check_enum: | |
3e43a32a MS |
3167 | /* If this is an enumerated type, we need to add |
3168 | all the enum constants to the partial symbol | |
3169 | table. This does not cover enums without names, | |
025bb325 | 3170 | e.g. "enum {a, b} c;" in C, but fortunately |
3e43a32a MS |
3171 | those are rare. There is no way for GDB to find |
3172 | those from the enum type without spending too | |
3173 | much time on it. Thus to solve this problem, | |
3174 | the compiler needs to put out the enum in a | |
3175 | nameless type. GCC2 does this. */ | |
d3119d1e EZ |
3176 | |
3177 | /* We are looking for something of the form | |
3178 | <name> ":" ("t" | "T") [<number> "="] "e" | |
3179 | {<constant> ":" <value> ","} ";". */ | |
3180 | ||
3181 | /* Skip over the colon and the 't' or 'T'. */ | |
3182 | p += 2; | |
3e43a32a MS |
3183 | /* This type may be given a number. Also, numbers |
3184 | can come in pairs like (0,26). Skip over it. */ | |
d3119d1e EZ |
3185 | while ((*p >= '0' && *p <= '9') |
3186 | || *p == '(' || *p == ',' || *p == ')' | |
3187 | || *p == '=') | |
3188 | p++; | |
3189 | ||
3190 | if (*p++ == 'e') | |
3191 | { | |
3e43a32a MS |
3192 | /* The aix4 compiler emits extra crud before |
3193 | the members. */ | |
d3119d1e EZ |
3194 | if (*p == '-') |
3195 | { | |
3196 | /* Skip over the type (?). */ | |
3197 | while (*p != ':') | |
3198 | p++; | |
3199 | ||
3200 | /* Skip over the colon. */ | |
3201 | p++; | |
3202 | } | |
3203 | ||
3204 | /* We have found an enumerated type. */ | |
3205 | /* According to comments in read_enum_type | |
3206 | a comma could end it instead of a semicolon. | |
3207 | I don't know where that happens. | |
3208 | Accept either. */ | |
3209 | while (*p && *p != ';' && *p != ',') | |
3210 | { | |
3211 | char *q; | |
3212 | ||
3e43a32a MS |
3213 | /* Check for and handle cretinous dbx |
3214 | symbol name continuation! */ | |
d3119d1e EZ |
3215 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) |
3216 | p = next_symbol_text (objfile); | |
3217 | ||
3218 | /* Point to the character after the name | |
3219 | of the enum constant. */ | |
3220 | for (q = p; *q && *q != ':'; q++) | |
3221 | ; | |
3222 | /* Note that the value doesn't matter for | |
3e43a32a MS |
3223 | enum constants in psymtabs, just in |
3224 | symtabs. */ | |
04a679b8 | 3225 | add_psymbol_to_list (p, q - p, 1, |
176620f1 | 3226 | VAR_DOMAIN, LOC_CONST, |
3e43a32a MS |
3227 | &objfile->static_psymbols, |
3228 | 0, 0, psymtab_language, | |
3229 | objfile); | |
d3119d1e EZ |
3230 | /* Point past the name. */ |
3231 | p = q; | |
3232 | /* Skip over the value. */ | |
3233 | while (*p && *p != ',') | |
3234 | p++; | |
3235 | /* Advance past the comma. */ | |
3236 | if (*p) | |
3237 | p++; | |
3238 | } | |
3239 | } | |
3240 | continue; | |
3241 | case 'c': | |
3242 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 3243 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3244 | VAR_DOMAIN, LOC_CONST, |
3e43a32a MS |
3245 | &objfile->static_psymbols, |
3246 | sh.value, 0, psymtab_language, | |
3247 | objfile); | |
d3119d1e EZ |
3248 | continue; |
3249 | ||
3250 | case 'f': | |
3251 | if (! pst) | |
3252 | { | |
3253 | int name_len = p - namestring; | |
3254 | char *name = xmalloc (name_len + 1); | |
b8d56208 | 3255 | |
d3119d1e EZ |
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 | } | |
3e43a32a MS |
3261 | sh.value += ANOFFSET (objfile->section_offsets, |
3262 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 3263 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3264 | VAR_DOMAIN, LOC_BLOCK, |
d3119d1e EZ |
3265 | &objfile->static_psymbols, |
3266 | 0, sh.value, | |
3267 | psymtab_language, objfile); | |
3268 | continue; | |
3269 | ||
3270 | /* Global functions were ignored here, but now they | |
3e43a32a MS |
3271 | are put into the global psymtab like one would |
3272 | expect. They're also in the minimal symbol | |
3273 | table. */ | |
d3119d1e EZ |
3274 | case 'F': |
3275 | if (! pst) | |
3276 | { | |
3277 | int name_len = p - namestring; | |
3278 | char *name = xmalloc (name_len + 1); | |
b8d56208 | 3279 | |
d3119d1e EZ |
3280 | memcpy (name, namestring, name_len); |
3281 | name[name_len] = '\0'; | |
23136709 | 3282 | function_outside_compilation_unit_complaint (name); |
d3119d1e EZ |
3283 | xfree (name); |
3284 | } | |
3e43a32a MS |
3285 | sh.value += ANOFFSET (objfile->section_offsets, |
3286 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 3287 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3288 | VAR_DOMAIN, LOC_BLOCK, |
d3119d1e EZ |
3289 | &objfile->global_psymbols, |
3290 | 0, sh.value, | |
3291 | psymtab_language, objfile); | |
3292 | continue; | |
3293 | ||
3e43a32a MS |
3294 | /* Two things show up here (hopefully); static |
3295 | symbols of local scope (static used inside | |
3296 | braces) or extensions of structure symbols. We | |
3297 | can ignore both. */ | |
d3119d1e EZ |
3298 | case 'V': |
3299 | case '(': | |
3300 | case '0': | |
3301 | case '1': | |
3302 | case '2': | |
3303 | case '3': | |
3304 | case '4': | |
3305 | case '5': | |
3306 | case '6': | |
3307 | case '7': | |
3308 | case '8': | |
3309 | case '9': | |
3310 | case '-': | |
3e43a32a MS |
3311 | case '#': /* For symbol identification (used |
3312 | in live ranges). */ | |
d3119d1e EZ |
3313 | continue; |
3314 | ||
3315 | case ':': | |
3e43a32a MS |
3316 | /* It is a C++ nested symbol. We don't need to |
3317 | record it (I don't think); if we try to look up | |
3318 | foo::bar::baz, then symbols for the symtab | |
3319 | containing foo should get read in, I think. */ | |
d3119d1e EZ |
3320 | /* Someone says sun cc puts out symbols like |
3321 | /foo/baz/maclib::/usr/local/bin/maclib, | |
3322 | which would get here with a symbol type of ':'. */ | |
3323 | continue; | |
3324 | ||
3325 | default: | |
3e43a32a MS |
3326 | /* Unexpected symbol descriptor. The second and |
3327 | subsequent stabs of a continued stab can show up | |
3328 | here. The question is whether they ever can | |
3329 | mimic a normal stab--it would be nice if not, | |
3330 | since we certainly don't want to spend the time | |
3331 | searching to the end of every string looking for | |
d3119d1e EZ |
3332 | a backslash. */ |
3333 | ||
23136709 | 3334 | complaint (&symfile_complaints, |
e2e0b3e5 | 3335 | _("unknown symbol descriptor `%c'"), p[1]); |
d3119d1e EZ |
3336 | |
3337 | /* Ignore it; perhaps it is an extension that we don't | |
3338 | know about. */ | |
3339 | continue; | |
3340 | } | |
3341 | ||
3342 | case N_EXCL: | |
3343 | continue; | |
3344 | ||
3345 | case N_ENDM: | |
5afc051b JB |
3346 | /* Solaris 2 end of module, finish current partial |
3347 | symbol table. END_PSYMTAB will set | |
3348 | pst->texthigh to the proper value, which is | |
3349 | necessary if a module compiled without | |
3350 | debugging info follows this module. */ | |
203c3895 | 3351 | if (pst |
5e2b427d | 3352 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
d3119d1e EZ |
3353 | { |
3354 | pst = (struct partial_symtab *) 0; | |
3355 | includes_used = 0; | |
3356 | dependencies_used = 0; | |
3357 | } | |
d3119d1e EZ |
3358 | continue; |
3359 | ||
3360 | case N_RBRAC: | |
5afc051b JB |
3361 | if (sh.value > save_pst->texthigh) |
3362 | save_pst->texthigh = sh.value; | |
d3119d1e EZ |
3363 | continue; |
3364 | case N_EINCL: | |
3365 | case N_DSLINE: | |
3366 | case N_BSLINE: | |
3e43a32a MS |
3367 | case N_SSYM: /* Claim: Structure or union |
3368 | element. Hopefully, I can | |
3369 | ignore this. */ | |
3370 | case N_ENTRY: /* Alternate entry point; can | |
025bb325 | 3371 | ignore. */ |
3e43a32a | 3372 | case N_MAIN: /* Can definitely ignore this. */ |
025bb325 MS |
3373 | case N_CATCH: /* These are GNU C++ extensions. */ |
3374 | case N_EHDECL: /* that can safely be ignored here. */ | |
d3119d1e EZ |
3375 | case N_LENG: |
3376 | case N_BCOMM: | |
3377 | case N_ECOMM: | |
3378 | case N_ECOML: | |
3379 | case N_FNAME: | |
3380 | case N_SLINE: | |
3381 | case N_RSYM: | |
3382 | case N_PSYM: | |
3383 | case N_LBRAC: | |
3384 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
3385 | case N_DEFD: /* GNU Modula-2 */ | |
3e43a32a MS |
3386 | case N_ALIAS: /* SunPro F77: alias name, ignore |
3387 | for now. */ | |
d3119d1e | 3388 | |
025bb325 | 3389 | case N_OBJ: /* Useless types from Solaris. */ |
d3119d1e | 3390 | case N_OPT: |
3e43a32a | 3391 | /* These symbols aren't interesting; don't worry about |
025bb325 | 3392 | them. */ |
d3119d1e EZ |
3393 | |
3394 | continue; | |
3395 | ||
3396 | default: | |
3e43a32a MS |
3397 | /* If we haven't found it yet, ignore it. It's |
3398 | probably some new type we don't know about yet. */ | |
3399 | complaint (&symfile_complaints, | |
3400 | _("unknown symbol type %s"), | |
025bb325 | 3401 | hex_string (type_code)); /* CUR_SYMBOL_TYPE */ |
d3119d1e EZ |
3402 | continue; |
3403 | } | |
c5aa993b | 3404 | if (stabstring |
c906108c | 3405 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
b8c9b27d | 3406 | xfree (stabstring); |
c906108c | 3407 | } |
c5aa993b | 3408 | /* end - Handle continuation */ |
c906108c SS |
3409 | } |
3410 | } | |
3411 | else | |
3412 | { | |
3413 | for (cur_sdx = 0; cur_sdx < fh->csym;) | |
3414 | { | |
3415 | char *name; | |
3416 | enum address_class class; | |
2273f0ac | 3417 | CORE_ADDR minsym_value; |
c906108c SS |
3418 | |
3419 | (*swap_sym_in) (cur_bfd, | |
3420 | ((char *) debug_info->external_sym | |
3421 | + ((fh->isymBase + cur_sdx) | |
3422 | * external_sym_size)), | |
3423 | &sh); | |
3424 | ||
3425 | if (ECOFF_IS_STAB (&sh)) | |
3426 | { | |
3427 | cur_sdx++; | |
3428 | continue; | |
3429 | } | |
3430 | ||
3431 | /* Non absolute static symbols go into the minimal table. */ | |
c5aa993b | 3432 | if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil |
c906108c SS |
3433 | || (sh.index == indexNil |
3434 | && (sh.st != stStatic || sh.sc == scAbs))) | |
3435 | { | |
025bb325 | 3436 | /* FIXME, premature? */ |
c906108c SS |
3437 | cur_sdx++; |
3438 | continue; | |
3439 | } | |
3440 | ||
3441 | name = debug_info->ss + fh->issBase + sh.iss; | |
3442 | ||
2273f0ac TT |
3443 | minsym_value = sh.value; |
3444 | ||
c906108c SS |
3445 | switch (sh.sc) |
3446 | { | |
3447 | case scText: | |
3448 | case scRConst: | |
3449 | /* The value of a stEnd symbol is the displacement from the | |
3450 | corresponding start symbol value, do not relocate it. */ | |
3451 | if (sh.st != stEnd) | |
3e43a32a MS |
3452 | sh.value += ANOFFSET (objfile->section_offsets, |
3453 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3454 | break; |
3455 | case scData: | |
3456 | case scSData: | |
3457 | case scRData: | |
3458 | case scPData: | |
3459 | case scXData: | |
3e43a32a MS |
3460 | sh.value += ANOFFSET (objfile->section_offsets, |
3461 | SECT_OFF_DATA (objfile)); | |
c906108c SS |
3462 | break; |
3463 | case scBss: | |
3464 | case scSBss: | |
3e43a32a MS |
3465 | sh.value += ANOFFSET (objfile->section_offsets, |
3466 | SECT_OFF_BSS (objfile)); | |
c906108c SS |
3467 | break; |
3468 | } | |
3469 | ||
3470 | switch (sh.st) | |
3471 | { | |
3472 | CORE_ADDR high; | |
3473 | CORE_ADDR procaddr; | |
3474 | int new_sdx; | |
3475 | ||
3476 | case stStaticProc: | |
2273f0ac | 3477 | prim_record_minimal_symbol_and_info (name, minsym_value, |
b887350f | 3478 | mst_file_text, |
3e43a32a | 3479 | SECT_OFF_TEXT (objfile), |
e6dc44a8 | 3480 | objfile); |
c906108c SS |
3481 | |
3482 | /* FALLTHROUGH */ | |
3483 | ||
3484 | case stProc: | |
1fb4c65b JB |
3485 | /* Ignore all parameter symbol records. */ |
3486 | if (sh.index >= hdr->iauxMax) | |
3487 | { | |
3488 | /* Should not happen, but does when cross-compiling | |
3489 | with the MIPS compiler. FIXME -- pull later. */ | |
3490 | index_complaint (name); | |
025bb325 | 3491 | new_sdx = cur_sdx + 1; /* Don't skip at all. */ |
1fb4c65b JB |
3492 | } |
3493 | else | |
3494 | new_sdx = AUX_GET_ISYM (fh->fBigendian, | |
3495 | (debug_info->external_aux | |
3496 | + fh->iauxBase | |
3497 | + sh.index)); | |
3498 | ||
3499 | if (new_sdx <= cur_sdx) | |
3500 | { | |
3501 | /* This should not happen either... FIXME. */ | |
3502 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3503 | _("bad proc end in aux found from symbol %s"), |
1fb4c65b | 3504 | name); |
025bb325 | 3505 | new_sdx = cur_sdx + 1; /* Don't skip backward. */ |
1fb4c65b JB |
3506 | } |
3507 | ||
3508 | /* For stProc symbol records, we need to check the | |
3509 | storage class as well, as only (stProc, scText) | |
3510 | entries represent "real" procedures - See the | |
3511 | Compaq document titled "Object File / Symbol Table | |
3512 | Format Specification" for more information. If the | |
3513 | storage class is not scText, we discard the whole | |
3514 | block of symbol records for this stProc. */ | |
3515 | if (sh.st == stProc && sh.sc != scText) | |
3516 | goto skip; | |
3517 | ||
c906108c | 3518 | /* Usually there is a local and a global stProc symbol |
025bb325 | 3519 | for a function. This means that the function name |
c906108c SS |
3520 | has already been entered into the mimimal symbol table |
3521 | while processing the global symbols in pass 2 above. | |
3522 | One notable exception is the PROGRAM name from | |
3523 | f77 compiled executables, it is only put out as | |
3524 | local stProc symbol, and a global MAIN__ stProc symbol | |
3525 | points to it. It doesn't matter though, as gdb is | |
3526 | still able to find the PROGRAM name via the partial | |
3527 | symbol table, and the MAIN__ symbol via the minimal | |
3528 | symbol table. */ | |
3529 | if (sh.st == stProc) | |
04a679b8 | 3530 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3531 | VAR_DOMAIN, LOC_BLOCK, |
c906108c | 3532 | &objfile->global_psymbols, |
c5aa993b | 3533 | 0, sh.value, psymtab_language, objfile); |
c906108c | 3534 | else |
04a679b8 | 3535 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3536 | VAR_DOMAIN, LOC_BLOCK, |
c906108c | 3537 | &objfile->static_psymbols, |
c5aa993b | 3538 | 0, sh.value, psymtab_language, objfile); |
c906108c | 3539 | |
c906108c SS |
3540 | procaddr = sh.value; |
3541 | ||
c906108c SS |
3542 | cur_sdx = new_sdx; |
3543 | (*swap_sym_in) (cur_bfd, | |
3544 | ((char *) debug_info->external_sym | |
3545 | + ((fh->isymBase + cur_sdx - 1) | |
3546 | * external_sym_size)), | |
3547 | &sh); | |
3548 | if (sh.st != stEnd) | |
3549 | continue; | |
3550 | ||
3551 | /* Kludge for Irix 5.2 zero fh->adr. */ | |
3552 | if (!relocatable | |
5afc051b JB |
3553 | && (pst->textlow == 0 || procaddr < pst->textlow)) |
3554 | pst->textlow = procaddr; | |
c906108c SS |
3555 | |
3556 | high = procaddr + sh.value; | |
5afc051b JB |
3557 | if (high > pst->texthigh) |
3558 | pst->texthigh = high; | |
c906108c SS |
3559 | continue; |
3560 | ||
3561 | case stStatic: /* Variable */ | |
c5aa993b | 3562 | if (SC_IS_DATA (sh.sc)) |
2273f0ac | 3563 | prim_record_minimal_symbol_and_info (name, minsym_value, |
b887350f | 3564 | mst_file_data, |
b8fbeb18 | 3565 | SECT_OFF_DATA (objfile), |
c906108c SS |
3566 | objfile); |
3567 | else | |
2273f0ac | 3568 | prim_record_minimal_symbol_and_info (name, minsym_value, |
b887350f | 3569 | mst_file_bss, |
b8fbeb18 | 3570 | SECT_OFF_BSS (objfile), |
c906108c SS |
3571 | objfile); |
3572 | class = LOC_STATIC; | |
3573 | break; | |
3574 | ||
c5aa993b | 3575 | case stIndirect: /* Irix5 forward declaration */ |
025bb325 | 3576 | /* Skip forward declarations from Irix5 cc. */ |
c906108c SS |
3577 | goto skip; |
3578 | ||
c5aa993b | 3579 | case stTypedef: /* Typedef */ |
c906108c SS |
3580 | /* Skip typedefs for forward declarations and opaque |
3581 | structs from alpha and mips cc. */ | |
3582 | if (sh.iss == 0 || has_opaque_xref (fh, &sh)) | |
3583 | goto skip; | |
3584 | class = LOC_TYPEDEF; | |
3585 | break; | |
3586 | ||
3587 | case stConstant: /* Constant decl */ | |
3588 | class = LOC_CONST; | |
3589 | break; | |
3590 | ||
3591 | case stUnion: | |
3592 | case stStruct: | |
3593 | case stEnum: | |
c5aa993b | 3594 | case stBlock: /* { }, str, un, enum */ |
c906108c | 3595 | /* Do not create a partial symbol for cc unnamed aggregates |
025bb325 | 3596 | and gcc empty aggregates. */ |
c906108c | 3597 | if ((sh.sc == scInfo |
c5aa993b | 3598 | || SC_IS_COMMON (sh.sc)) |
c906108c SS |
3599 | && sh.iss != 0 |
3600 | && sh.index != cur_sdx + 2) | |
3601 | { | |
04a679b8 | 3602 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3603 | STRUCT_DOMAIN, LOC_TYPEDEF, |
c906108c SS |
3604 | &objfile->static_psymbols, |
3605 | 0, (CORE_ADDR) 0, | |
3606 | psymtab_language, objfile); | |
3607 | } | |
3608 | handle_psymbol_enumerators (objfile, fh, sh.st, sh.value); | |
3609 | ||
025bb325 | 3610 | /* Skip over the block. */ |
c906108c SS |
3611 | new_sdx = sh.index; |
3612 | if (new_sdx <= cur_sdx) | |
3613 | { | |
025bb325 | 3614 | /* This happens with the Ultrix kernel. */ |
23136709 | 3615 | complaint (&symfile_complaints, |
e2e0b3e5 | 3616 | _("bad aux index at block symbol %s"), name); |
025bb325 | 3617 | new_sdx = cur_sdx + 1; /* Don't skip backward. */ |
c906108c SS |
3618 | } |
3619 | cur_sdx = new_sdx; | |
3620 | continue; | |
3621 | ||
3622 | case stFile: /* File headers */ | |
3623 | case stLabel: /* Labels */ | |
3624 | case stEnd: /* Ends of files */ | |
3625 | goto skip; | |
3626 | ||
3627 | case stLocal: /* Local variables */ | |
3628 | /* Normally these are skipped because we skip over | |
3629 | all blocks we see. However, these can occur | |
025bb325 | 3630 | as visible symbols in a .h file that contains code. */ |
c906108c SS |
3631 | goto skip; |
3632 | ||
3633 | default: | |
3634 | /* Both complaints are valid: one gives symbol name, | |
3635 | the other the offending symbol type. */ | |
e2e0b3e5 | 3636 | complaint (&symfile_complaints, _("unknown local symbol %s"), |
23136709 | 3637 | name); |
e2e0b3e5 | 3638 | complaint (&symfile_complaints, _("with type %d"), sh.st); |
c906108c SS |
3639 | cur_sdx++; |
3640 | continue; | |
3641 | } | |
025bb325 | 3642 | /* Use this gdb symbol. */ |
04a679b8 | 3643 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3644 | VAR_DOMAIN, class, |
c906108c SS |
3645 | &objfile->static_psymbols, |
3646 | 0, sh.value, psymtab_language, objfile); | |
3647 | skip: | |
025bb325 | 3648 | cur_sdx++; /* Go to next file symbol. */ |
c906108c SS |
3649 | } |
3650 | ||
025bb325 | 3651 | /* Now do enter the external symbols. */ |
c906108c SS |
3652 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; |
3653 | cur_sdx = fdr_to_pst[f_idx].n_globals; | |
3654 | PST_PRIVATE (save_pst)->extern_count = cur_sdx; | |
3655 | PST_PRIVATE (save_pst)->extern_tab = ext_ptr; | |
3656 | for (; --cur_sdx >= 0; ext_ptr++) | |
3657 | { | |
3658 | enum address_class class; | |
3659 | SYMR *psh; | |
3660 | char *name; | |
3661 | CORE_ADDR svalue; | |
3662 | ||
3663 | if (ext_ptr->ifd != f_idx) | |
3e43a32a MS |
3664 | internal_error (__FILE__, __LINE__, |
3665 | _("failed internal consistency check")); | |
c906108c SS |
3666 | psh = &ext_ptr->asym; |
3667 | ||
3668 | /* Do not add undefined symbols to the partial symbol table. */ | |
c5aa993b | 3669 | if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil) |
c906108c SS |
3670 | continue; |
3671 | ||
3672 | svalue = psh->value; | |
3673 | switch (psh->sc) | |
3674 | { | |
3675 | case scText: | |
3676 | case scRConst: | |
3e43a32a MS |
3677 | svalue += ANOFFSET (objfile->section_offsets, |
3678 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3679 | break; |
3680 | case scData: | |
3681 | case scSData: | |
3682 | case scRData: | |
3683 | case scPData: | |
3684 | case scXData: | |
3e43a32a MS |
3685 | svalue += ANOFFSET (objfile->section_offsets, |
3686 | SECT_OFF_DATA (objfile)); | |
c906108c SS |
3687 | break; |
3688 | case scBss: | |
3689 | case scSBss: | |
3e43a32a MS |
3690 | svalue += ANOFFSET (objfile->section_offsets, |
3691 | SECT_OFF_BSS (objfile)); | |
c906108c SS |
3692 | break; |
3693 | } | |
3694 | ||
3695 | switch (psh->st) | |
3696 | { | |
3697 | case stNil: | |
3698 | /* These are generated for static symbols in .o files, | |
3699 | ignore them. */ | |
3700 | continue; | |
3701 | case stProc: | |
3702 | case stStaticProc: | |
3703 | /* External procedure symbols have been entered | |
3704 | into the minimal symbol table in pass 2 above. | |
3705 | Ignore them, as parse_external will ignore them too. */ | |
3706 | continue; | |
3707 | case stLabel: | |
3708 | class = LOC_LABEL; | |
3709 | break; | |
3710 | default: | |
23136709 | 3711 | unknown_ext_complaint (debug_info->ssext + psh->iss); |
c906108c SS |
3712 | /* Fall through, pretend it's global. */ |
3713 | case stGlobal: | |
3714 | /* Global common symbols are resolved by the runtime loader, | |
3715 | ignore them. */ | |
c5aa993b | 3716 | if (SC_IS_COMMON (psh->sc)) |
c906108c SS |
3717 | continue; |
3718 | ||
3719 | class = LOC_STATIC; | |
3720 | break; | |
3721 | } | |
3722 | name = debug_info->ssext + psh->iss; | |
04a679b8 | 3723 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3724 | VAR_DOMAIN, class, |
c906108c SS |
3725 | &objfile->global_psymbols, |
3726 | 0, svalue, | |
3727 | psymtab_language, objfile); | |
3728 | } | |
3729 | } | |
3730 | ||
025bb325 | 3731 | /* Link pst to FDR. end_psymtab returns NULL if the psymtab was |
c5aa993b | 3732 | empty and put on the free list. */ |
5c80ed9d | 3733 | fdr_to_pst[f_idx].pst = end_psymtab (objfile, save_pst, |
c5aa993b | 3734 | psymtab_include_list, includes_used, |
5afc051b | 3735 | -1, save_pst->texthigh, |
c5aa993b | 3736 | dependency_list, dependencies_used, textlow_not_set); |
c906108c SS |
3737 | includes_used = 0; |
3738 | dependencies_used = 0; | |
3739 | ||
c906108c | 3740 | /* The objfile has its functions reordered if this partial symbol |
c5aa993b JM |
3741 | table overlaps any other partial symbol table. |
3742 | We cannot assume a reordered objfile if a partial symbol table | |
3743 | is contained within another partial symbol table, as partial symbol | |
3744 | tables for include files with executable code are contained | |
3745 | within the partial symbol table for the including source file, | |
3746 | and we do not want to flag the objfile reordered for these cases. | |
3747 | ||
3748 | This strategy works well for Irix-5.2 shared libraries, but we | |
3749 | might have to use a more elaborate (and slower) algorithm for | |
3750 | other cases. */ | |
c906108c SS |
3751 | save_pst = fdr_to_pst[f_idx].pst; |
3752 | if (save_pst != NULL | |
5afc051b | 3753 | && save_pst->textlow != 0 |
c906108c SS |
3754 | && !(objfile->flags & OBJF_REORDERED)) |
3755 | { | |
3756 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
c5aa993b JM |
3757 | { |
3758 | if (save_pst != pst | |
5afc051b JB |
3759 | && save_pst->textlow >= pst->textlow |
3760 | && save_pst->textlow < pst->texthigh | |
3761 | && save_pst->texthigh > pst->texthigh) | |
c5aa993b JM |
3762 | { |
3763 | objfile->flags |= OBJF_REORDERED; | |
3764 | break; | |
3765 | } | |
3766 | } | |
c906108c SS |
3767 | } |
3768 | } | |
3769 | ||
025bb325 | 3770 | /* Now scan the FDRs for dependencies. */ |
c906108c SS |
3771 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) |
3772 | { | |
3773 | fh = f_idx + debug_info->fdr; | |
3774 | pst = fdr_to_pst[f_idx].pst; | |
3775 | ||
c5aa993b | 3776 | if (pst == (struct partial_symtab *) NULL) |
c906108c SS |
3777 | continue; |
3778 | ||
025bb325 | 3779 | /* This should catch stabs-in-ecoff. */ |
c906108c SS |
3780 | if (fh->crfd <= 1) |
3781 | continue; | |
3782 | ||
3e43a32a MS |
3783 | /* Skip the first file indirect entry as it is a self dependency for |
3784 | source files or a reverse .h -> .c dependency for header files. */ | |
c906108c SS |
3785 | pst->number_of_dependencies = 0; |
3786 | pst->dependencies = | |
3787 | ((struct partial_symtab **) | |
8b92e4d5 | 3788 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
3789 | ((fh->crfd - 1) |
3790 | * sizeof (struct partial_symtab *)))); | |
3791 | for (s_idx = 1; s_idx < fh->crfd; s_idx++) | |
3792 | { | |
3793 | RFDT rh; | |
3794 | ||
3795 | (*swap_rfd_in) (cur_bfd, | |
3796 | ((char *) debug_info->external_rfd | |
3797 | + (fh->rfdBase + s_idx) * external_rfd_size), | |
3798 | &rh); | |
3799 | if (rh < 0 || rh >= hdr->ifdMax) | |
3800 | { | |
e2e0b3e5 | 3801 | complaint (&symfile_complaints, _("bad file number %ld"), rh); |
c906108c SS |
3802 | continue; |
3803 | } | |
3804 | ||
3805 | /* Skip self dependencies of header files. */ | |
3806 | if (rh == f_idx) | |
3807 | continue; | |
3808 | ||
3809 | /* Do not add to dependeny list if psymtab was empty. */ | |
c5aa993b | 3810 | if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL) |
c906108c | 3811 | continue; |
3e43a32a MS |
3812 | pst->dependencies[pst->number_of_dependencies++] |
3813 | = fdr_to_pst[rh].pst; | |
c906108c SS |
3814 | } |
3815 | } | |
3816 | ||
3817 | /* Remove the dummy psymtab created for -O3 images above, if it is | |
3818 | still empty, to enable the detection of stripped executables. */ | |
3819 | if (objfile->psymtabs->next == NULL | |
3820 | && objfile->psymtabs->number_of_dependencies == 0 | |
3821 | && objfile->psymtabs->n_global_syms == 0 | |
3822 | && objfile->psymtabs->n_static_syms == 0) | |
3823 | objfile->psymtabs = NULL; | |
3824 | do_cleanups (old_chain); | |
3825 | } | |
3826 | ||
3827 | /* If the current psymbol has an enumerated type, we need to add | |
b021a221 | 3828 | all the enum constants to the partial symbol table. */ |
c906108c SS |
3829 | |
3830 | static void | |
fba45db2 KB |
3831 | handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype, |
3832 | CORE_ADDR svalue) | |
c906108c SS |
3833 | { |
3834 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
12b9c64f | 3835 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c | 3836 | char *ext_sym = ((char *) debug_info->external_sym |
c5aa993b | 3837 | + ((fh->isymBase + cur_sdx + 1) * external_sym_size)); |
c906108c SS |
3838 | SYMR sh; |
3839 | TIR tir; | |
3840 | ||
3841 | switch (stype) | |
3842 | { | |
3843 | case stEnum: | |
3844 | break; | |
3845 | ||
3846 | case stBlock: | |
3847 | /* It is an enumerated type if the next symbol entry is a stMember | |
c5aa993b JM |
3848 | and its auxiliary index is indexNil or its auxiliary entry |
3849 | is a plain btNil or btVoid. | |
3850 | Alpha cc -migrate enums are recognized by a zero index and | |
3851 | a zero symbol value. | |
3852 | DU 4.0 cc enums are recognized by a member type of btEnum without | |
3853 | qualifiers and a zero symbol value. */ | |
c906108c SS |
3854 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); |
3855 | if (sh.st != stMember) | |
3856 | return; | |
3857 | ||
3858 | if (sh.index == indexNil | |
3859 | || (sh.index == 0 && svalue == 0)) | |
3860 | break; | |
3861 | (*debug_swap->swap_tir_in) (fh->fBigendian, | |
3862 | &(debug_info->external_aux | |
3863 | + fh->iauxBase + sh.index)->a_ti, | |
3864 | &tir); | |
3865 | if ((tir.bt != btNil | |
3866 | && tir.bt != btVoid | |
3867 | && (tir.bt != btEnum || svalue != 0)) | |
3868 | || tir.tq0 != tqNil) | |
3869 | return; | |
3870 | break; | |
3871 | ||
3872 | default: | |
3873 | return; | |
3874 | } | |
3875 | ||
3876 | for (;;) | |
3877 | { | |
3878 | char *name; | |
3879 | ||
3880 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); | |
3881 | if (sh.st != stMember) | |
3882 | break; | |
3883 | name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
3884 | ||
3885 | /* Note that the value doesn't matter for enum constants | |
c5aa993b | 3886 | in psymtabs, just in symtabs. */ |
04a679b8 | 3887 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3888 | VAR_DOMAIN, LOC_CONST, |
c906108c SS |
3889 | &objfile->static_psymbols, 0, |
3890 | (CORE_ADDR) 0, psymtab_language, objfile); | |
3891 | ext_sym += external_sym_size; | |
3892 | } | |
3893 | } | |
3894 | ||
025bb325 | 3895 | /* Get the next symbol. OBJFILE is unused. */ |
0e7e8d51 | 3896 | |
c906108c | 3897 | static char * |
0e7e8d51 | 3898 | mdebug_next_symbol_text (struct objfile *objfile) |
c906108c SS |
3899 | { |
3900 | SYMR sh; | |
3901 | ||
3902 | cur_sdx++; | |
3903 | (*debug_swap->swap_sym_in) (cur_bfd, | |
3904 | ((char *) debug_info->external_sym | |
3905 | + ((cur_fdr->isymBase + cur_sdx) | |
3906 | * debug_swap->external_sym_size)), | |
3907 | &sh); | |
3908 | return debug_info->ss + cur_fdr->issBase + sh.iss; | |
3909 | } | |
3910 | ||
3911 | /* Ancillary function to psymtab_to_symtab(). Does all the work | |
3912 | for turning the partial symtab PST into a symtab, recurring | |
3913 | first on all dependent psymtabs. The argument FILENAME is | |
3914 | only passed so we can see in debug stack traces what file | |
3915 | is being read. | |
3916 | ||
3917 | This function has a split personality, based on whether the | |
3918 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. | |
3919 | The flow of control and even the memory allocation differs. FIXME. */ | |
3920 | ||
3921 | static void | |
5c80ed9d TT |
3922 | psymtab_to_symtab_1 (struct objfile *objfile, |
3923 | struct partial_symtab *pst, const char *filename) | |
c906108c SS |
3924 | { |
3925 | bfd_size_type external_sym_size; | |
3926 | bfd_size_type external_pdr_size; | |
12b9c64f AO |
3927 | void (*swap_sym_in) (bfd *, void *, SYMR *); |
3928 | void (*swap_pdr_in) (bfd *, void *, PDR *); | |
c906108c | 3929 | int i; |
16db6055 | 3930 | struct symtab *st = NULL; |
c906108c SS |
3931 | FDR *fh; |
3932 | struct linetable *lines; | |
3933 | CORE_ADDR lowest_pdr_addr = 0; | |
16db6055 | 3934 | int last_symtab_ended = 0; |
c906108c SS |
3935 | |
3936 | if (pst->readin) | |
3937 | return; | |
3938 | pst->readin = 1; | |
3939 | ||
3940 | /* Read in all partial symbtabs on which this one is dependent. | |
3941 | NOTE that we do have circular dependencies, sigh. We solved | |
3942 | that by setting pst->readin before this point. */ | |
3943 | ||
3944 | for (i = 0; i < pst->number_of_dependencies; i++) | |
3945 | if (!pst->dependencies[i]->readin) | |
3946 | { | |
3947 | /* Inform about additional files to be read in. */ | |
3948 | if (info_verbose) | |
3949 | { | |
3950 | fputs_filtered (" ", gdb_stdout); | |
3951 | wrap_here (""); | |
3952 | fputs_filtered ("and ", gdb_stdout); | |
3953 | wrap_here (""); | |
3954 | printf_filtered ("%s...", | |
3955 | pst->dependencies[i]->filename); | |
3956 | wrap_here (""); /* Flush output */ | |
3957 | gdb_flush (gdb_stdout); | |
3958 | } | |
025bb325 | 3959 | /* We only pass the filename for debug purposes. */ |
5c80ed9d | 3960 | psymtab_to_symtab_1 (objfile, pst->dependencies[i], |
c906108c SS |
3961 | pst->dependencies[i]->filename); |
3962 | } | |
3963 | ||
3964 | /* Do nothing if this is a dummy psymtab. */ | |
3965 | ||
3966 | if (pst->n_global_syms == 0 && pst->n_static_syms == 0 | |
5afc051b | 3967 | && pst->textlow == 0 && pst->texthigh == 0) |
c906108c SS |
3968 | return; |
3969 | ||
025bb325 | 3970 | /* Now read the symbols for this symtab. */ |
c906108c SS |
3971 | |
3972 | cur_bfd = CUR_BFD (pst); | |
3973 | debug_swap = DEBUG_SWAP (pst); | |
3974 | debug_info = DEBUG_INFO (pst); | |
3975 | pending_list = PENDING_LIST (pst); | |
3976 | external_sym_size = debug_swap->external_sym_size; | |
3977 | external_pdr_size = debug_swap->external_pdr_size; | |
3978 | swap_sym_in = debug_swap->swap_sym_in; | |
3979 | swap_pdr_in = debug_swap->swap_pdr_in; | |
5c80ed9d | 3980 | mdebugread_objfile = objfile; |
c906108c SS |
3981 | cur_fd = FDR_IDX (pst); |
3982 | fh = ((cur_fd == -1) | |
3983 | ? (FDR *) NULL | |
3984 | : debug_info->fdr + cur_fd); | |
3985 | cur_fdr = fh; | |
3986 | ||
025bb325 | 3987 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ |
c906108c SS |
3988 | processing_gcc_compilation = 0; |
3989 | if (fh != (FDR *) NULL && fh->csym >= 2) | |
3990 | { | |
3991 | SYMR sh; | |
3992 | ||
3993 | (*swap_sym_in) (cur_bfd, | |
3994 | ((char *) debug_info->external_sym | |
3995 | + (fh->isymBase + 1) * external_sym_size), | |
3996 | &sh); | |
ee300cd4 AC |
3997 | if (strcmp (debug_info->ss + fh->issBase + sh.iss, |
3998 | stabs_symbol) == 0) | |
c906108c SS |
3999 | { |
4000 | /* We indicate that this is a GCC compilation so that certain | |
4001 | features will be enabled in stabsread/dbxread. */ | |
4002 | processing_gcc_compilation = 2; | |
4003 | } | |
4004 | } | |
4005 | ||
4006 | if (processing_gcc_compilation != 0) | |
4007 | { | |
5c80ed9d | 4008 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
4009 | |
4010 | /* This symbol table contains stabs-in-ecoff entries. */ | |
4011 | ||
025bb325 | 4012 | /* Parse local symbols first. */ |
c906108c | 4013 | |
025bb325 | 4014 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr. */ |
c906108c | 4015 | { |
dd707e8e | 4016 | mdebugread_objfile = NULL; |
c906108c SS |
4017 | return; |
4018 | } | |
4019 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
4020 | { | |
4021 | SYMR sh; | |
4022 | char *name; | |
4023 | CORE_ADDR valu; | |
4024 | ||
4025 | (*swap_sym_in) (cur_bfd, | |
4026 | (((char *) debug_info->external_sym) | |
4027 | + (fh->isymBase + cur_sdx) * external_sym_size), | |
4028 | &sh); | |
4029 | name = debug_info->ss + fh->issBase + sh.iss; | |
4030 | valu = sh.value; | |
4031 | /* XXX This is a hack. It will go away! */ | |
4032 | if (ECOFF_IS_STAB (&sh) || (name[0] == '#')) | |
4033 | { | |
4034 | int type_code = ECOFF_UNMARK_STAB (sh.index); | |
4035 | ||
4036 | /* We should never get non N_STAB symbols here, but they | |
c5aa993b JM |
4037 | should be harmless, so keep process_one_symbol from |
4038 | complaining about them. */ | |
c906108c SS |
4039 | if (type_code & N_STAB) |
4040 | { | |
16db6055 EZ |
4041 | /* If we found a trailing N_SO with no name, process |
4042 | it here instead of in process_one_symbol, so we | |
4043 | can keep a handle to its symtab. The symtab | |
4044 | would otherwise be ended twice, once in | |
025bb325 | 4045 | process_one_symbol, and once after this loop. */ |
16db6055 | 4046 | if (type_code == N_SO |
46212e0b | 4047 | && get_last_source_file () |
16db6055 EZ |
4048 | && previous_stab_code != (unsigned char) N_SO |
4049 | && *name == '\000') | |
4050 | { | |
4051 | valu += ANOFFSET (pst->section_offsets, | |
5c80ed9d | 4052 | SECT_OFF_TEXT (objfile)); |
16db6055 | 4053 | previous_stab_code = N_SO; |
5c80ed9d TT |
4054 | st = end_symtab (valu, objfile, |
4055 | SECT_OFF_TEXT (objfile)); | |
16db6055 EZ |
4056 | end_stabs (); |
4057 | last_symtab_ended = 1; | |
4058 | } | |
4059 | else | |
4060 | { | |
4061 | last_symtab_ended = 0; | |
4062 | process_one_symbol (type_code, 0, valu, name, | |
5c80ed9d | 4063 | pst->section_offsets, objfile); |
16db6055 | 4064 | } |
c906108c SS |
4065 | } |
4066 | /* Similarly a hack. */ | |
4067 | else if (name[0] == '#') | |
4068 | { | |
4069 | process_one_symbol (N_SLINE, 0, valu, name, | |
5c80ed9d | 4070 | pst->section_offsets, objfile); |
c906108c SS |
4071 | } |
4072 | if (type_code == N_FUN) | |
4073 | { | |
4074 | /* Make up special symbol to contain | |
025bb325 | 4075 | procedure specific info. */ |
f92761ec | 4076 | struct mdebug_extra_func_info *e = |
b8d56208 | 4077 | ((struct mdebug_extra_func_info *) |
dd707e8e | 4078 | obstack_alloc (&mdebugread_objfile->objfile_obstack, |
b8d56208 | 4079 | sizeof (struct mdebug_extra_func_info))); |
f92761ec | 4080 | struct symbol *s = new_symbol (MDEBUG_EFI_SYMBOL_NAME); |
c906108c | 4081 | |
f92761ec | 4082 | memset (e, 0, sizeof (struct mdebug_extra_func_info)); |
176620f1 | 4083 | SYMBOL_DOMAIN (s) = LABEL_DOMAIN; |
f1e6e072 | 4084 | SYMBOL_ACLASS_INDEX (s) = LOC_CONST; |
5c80ed9d | 4085 | SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_void; |
9918cab9 | 4086 | SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e; |
c906108c SS |
4087 | e->pdr.framereg = -1; |
4088 | add_symbol_to_list (s, &local_symbols); | |
4089 | } | |
4090 | } | |
4091 | else if (sh.st == stLabel) | |
4092 | { | |
4093 | if (sh.index == indexNil) | |
4094 | { | |
4095 | /* This is what the gcc2_compiled and __gnu_compiled_* | |
4096 | show up as. So don't complain. */ | |
4097 | ; | |
4098 | } | |
4099 | else | |
4100 | { | |
025bb325 | 4101 | /* Handle encoded stab line number. */ |
3e43a32a | 4102 | valu += ANOFFSET (pst->section_offsets, |
5c80ed9d | 4103 | SECT_OFF_TEXT (objfile)); |
fbf65064 UW |
4104 | record_line (current_subfile, sh.index, |
4105 | gdbarch_addr_bits_remove (gdbarch, valu)); | |
c906108c SS |
4106 | } |
4107 | } | |
4108 | else if (sh.st == stProc || sh.st == stStaticProc | |
4109 | || sh.st == stStatic || sh.st == stEnd) | |
025bb325 | 4110 | /* These are generated by gcc-2.x, do not complain. */ |
c906108c SS |
4111 | ; |
4112 | else | |
3e43a32a MS |
4113 | complaint (&symfile_complaints, |
4114 | _("unknown stabs symbol %s"), name); | |
c906108c | 4115 | } |
16db6055 EZ |
4116 | |
4117 | if (! last_symtab_ended) | |
4118 | { | |
5c80ed9d TT |
4119 | st = end_symtab (pst->texthigh, objfile, |
4120 | SECT_OFF_TEXT (objfile)); | |
16db6055 EZ |
4121 | end_stabs (); |
4122 | } | |
c906108c | 4123 | |
c906108c | 4124 | /* There used to be a call to sort_blocks here, but this should not |
c5aa993b JM |
4125 | be necessary for stabs symtabs. And as sort_blocks modifies the |
4126 | start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK, | |
4127 | it did the wrong thing if the first procedure in a file was | |
4128 | generated via asm statements. */ | |
c906108c SS |
4129 | |
4130 | /* Fill in procedure info next. */ | |
4131 | if (fh->cpd > 0) | |
4132 | { | |
4133 | PDR *pr_block; | |
4134 | struct cleanup *old_chain; | |
4135 | char *pdr_ptr; | |
4136 | char *pdr_end; | |
4137 | PDR *pdr_in; | |
4138 | PDR *pdr_in_end; | |
4139 | ||
4140 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
b8c9b27d | 4141 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4142 | |
4143 | pdr_ptr = ((char *) debug_info->external_pdr | |
4144 | + fh->ipdFirst * external_pdr_size); | |
4145 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4146 | pdr_in = pr_block; | |
4147 | for (; | |
4148 | pdr_ptr < pdr_end; | |
4149 | pdr_ptr += external_pdr_size, pdr_in++) | |
4150 | { | |
4151 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4152 | ||
4153 | /* Determine lowest PDR address, the PDRs are not always | |
c5aa993b | 4154 | sorted. */ |
c906108c SS |
4155 | if (pdr_in == pr_block) |
4156 | lowest_pdr_addr = pdr_in->adr; | |
4157 | else if (pdr_in->adr < lowest_pdr_addr) | |
4158 | lowest_pdr_addr = pdr_in->adr; | |
4159 | } | |
4160 | ||
4161 | pdr_in = pr_block; | |
4162 | pdr_in_end = pdr_in + fh->cpd; | |
4163 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4164 | parse_procedure (pdr_in, st, pst); | |
4165 | ||
4166 | do_cleanups (old_chain); | |
4167 | } | |
4168 | } | |
4169 | else | |
4170 | { | |
4171 | /* This symbol table contains ordinary ecoff entries. */ | |
4172 | ||
30cc903e | 4173 | int maxlines, size; |
c906108c SS |
4174 | EXTR *ext_ptr; |
4175 | ||
c906108c SS |
4176 | if (fh == 0) |
4177 | { | |
4178 | maxlines = 0; | |
5c80ed9d | 4179 | st = new_symtab ("unknown", 0, objfile); |
c906108c SS |
4180 | } |
4181 | else | |
4182 | { | |
c906108c | 4183 | maxlines = 2 * fh->cline; |
5c80ed9d | 4184 | st = new_symtab (pst->filename, maxlines, objfile); |
c906108c SS |
4185 | |
4186 | /* The proper language was already determined when building | |
4187 | the psymtab, use it. */ | |
4188 | st->language = PST_PRIVATE (pst)->pst_language; | |
4189 | } | |
4190 | ||
4191 | psymtab_language = st->language; | |
4192 | ||
4193 | lines = LINETABLE (st); | |
4194 | ||
025bb325 | 4195 | /* Get a new lexical context. */ |
c906108c SS |
4196 | |
4197 | push_parse_stack (); | |
4198 | top_stack->cur_st = st; | |
4199 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st), | |
4200 | STATIC_BLOCK); | |
5afc051b | 4201 | BLOCK_START (top_stack->cur_block) = pst->textlow; |
c906108c SS |
4202 | BLOCK_END (top_stack->cur_block) = 0; |
4203 | top_stack->blocktype = stFile; | |
c906108c SS |
4204 | top_stack->cur_type = 0; |
4205 | top_stack->procadr = 0; | |
4206 | top_stack->numargs = 0; | |
4207 | found_ecoff_debugging_info = 0; | |
4208 | ||
4209 | if (fh) | |
4210 | { | |
4211 | char *sym_ptr; | |
4212 | char *sym_end; | |
4213 | ||
025bb325 | 4214 | /* Parse local symbols first. */ |
c906108c SS |
4215 | sym_ptr = ((char *) debug_info->external_sym |
4216 | + fh->isymBase * external_sym_size); | |
4217 | sym_end = sym_ptr + fh->csym * external_sym_size; | |
4218 | while (sym_ptr < sym_end) | |
4219 | { | |
4220 | SYMR sh; | |
4221 | int c; | |
4222 | ||
4223 | (*swap_sym_in) (cur_bfd, sym_ptr, &sh); | |
4224 | c = parse_symbol (&sh, | |
4225 | debug_info->external_aux + fh->iauxBase, | |
3e43a32a | 4226 | sym_ptr, fh->fBigendian, |
5c80ed9d | 4227 | pst->section_offsets, objfile); |
c906108c SS |
4228 | sym_ptr += c * external_sym_size; |
4229 | } | |
4230 | ||
4231 | /* Linenumbers. At the end, check if we can save memory. | |
4232 | parse_lines has to look ahead an arbitrary number of PDR | |
4233 | structures, so we swap them all first. */ | |
4234 | if (fh->cpd > 0) | |
4235 | { | |
4236 | PDR *pr_block; | |
4237 | struct cleanup *old_chain; | |
4238 | char *pdr_ptr; | |
4239 | char *pdr_end; | |
4240 | PDR *pdr_in; | |
4241 | PDR *pdr_in_end; | |
4242 | ||
4243 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
4244 | ||
b8c9b27d | 4245 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4246 | |
4247 | pdr_ptr = ((char *) debug_info->external_pdr | |
4248 | + fh->ipdFirst * external_pdr_size); | |
4249 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4250 | pdr_in = pr_block; | |
4251 | for (; | |
4252 | pdr_ptr < pdr_end; | |
4253 | pdr_ptr += external_pdr_size, pdr_in++) | |
4254 | { | |
4255 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4256 | ||
4257 | /* Determine lowest PDR address, the PDRs are not always | |
4258 | sorted. */ | |
4259 | if (pdr_in == pr_block) | |
4260 | lowest_pdr_addr = pdr_in->adr; | |
4261 | else if (pdr_in->adr < lowest_pdr_addr) | |
4262 | lowest_pdr_addr = pdr_in->adr; | |
4263 | } | |
4264 | ||
3e43a32a MS |
4265 | parse_lines (fh, pr_block, lines, maxlines, |
4266 | pst, lowest_pdr_addr); | |
c906108c SS |
4267 | if (lines->nitems < fh->cline) |
4268 | lines = shrink_linetable (lines); | |
4269 | ||
4270 | /* Fill in procedure info next. */ | |
4271 | pdr_in = pr_block; | |
4272 | pdr_in_end = pdr_in + fh->cpd; | |
4273 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4274 | parse_procedure (pdr_in, 0, pst); | |
4275 | ||
4276 | do_cleanups (old_chain); | |
4277 | } | |
4278 | } | |
4279 | ||
30cc903e TT |
4280 | size = lines->nitems; |
4281 | if (size > 1) | |
4282 | --size; | |
dd707e8e | 4283 | LINETABLE (st) = obstack_copy (&mdebugread_objfile->objfile_obstack, |
30cc903e TT |
4284 | lines, |
4285 | (sizeof (struct linetable) | |
4286 | + size * sizeof (lines->item))); | |
4287 | xfree (lines); | |
c906108c SS |
4288 | |
4289 | /* .. and our share of externals. | |
025bb325 MS |
4290 | XXX use the global list to speed up things here. How? |
4291 | FIXME, Maybe quit once we have found the right number of ext's? */ | |
c906108c | 4292 | top_stack->cur_st = st; |
3e43a32a MS |
4293 | top_stack->cur_block |
4294 | = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
4295 | GLOBAL_BLOCK); | |
c906108c | 4296 | top_stack->blocktype = stFile; |
c906108c SS |
4297 | |
4298 | ext_ptr = PST_PRIVATE (pst)->extern_tab; | |
4299 | for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) | |
3e43a32a | 4300 | parse_external (ext_ptr, fh->fBigendian, |
5c80ed9d | 4301 | pst->section_offsets, objfile); |
c906108c SS |
4302 | |
4303 | /* If there are undefined symbols, tell the user. | |
c5aa993b JM |
4304 | The alpha has an undefined symbol for every symbol that is |
4305 | from a shared library, so tell the user only if verbose is on. */ | |
c906108c SS |
4306 | if (info_verbose && n_undef_symbols) |
4307 | { | |
a3f17187 | 4308 | printf_filtered (_("File %s contains %d unresolved references:"), |
05cba821 JK |
4309 | symtab_to_filename_for_display (st), |
4310 | n_undef_symbols); | |
3e43a32a MS |
4311 | printf_filtered ("\n\t%4d variables\n\t%4d " |
4312 | "procedures\n\t%4d labels\n", | |
c906108c SS |
4313 | n_undef_vars, n_undef_procs, n_undef_labels); |
4314 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; | |
4315 | ||
4316 | } | |
4317 | pop_parse_stack (); | |
4318 | ||
db0fec5c | 4319 | set_symtab_primary (st, 1); |
c906108c | 4320 | |
c906108c SS |
4321 | sort_blocks (st); |
4322 | } | |
4323 | ||
4324 | /* Now link the psymtab and the symtab. */ | |
4325 | pst->symtab = st; | |
4326 | ||
dd707e8e | 4327 | mdebugread_objfile = NULL; |
c906108c SS |
4328 | } |
4329 | \f | |
025bb325 | 4330 | /* Ancillary parsing procedures. */ |
c906108c SS |
4331 | |
4332 | /* Return 1 if the symbol pointed to by SH has a cross reference | |
4333 | to an opaque aggregate type, else 0. */ | |
4334 | ||
4335 | static int | |
fba45db2 | 4336 | has_opaque_xref (FDR *fh, SYMR *sh) |
c906108c SS |
4337 | { |
4338 | TIR tir; | |
4339 | union aux_ext *ax; | |
4340 | RNDXR rn[1]; | |
4341 | unsigned int rf; | |
4342 | ||
4343 | if (sh->index == indexNil) | |
4344 | return 0; | |
4345 | ||
4346 | ax = debug_info->external_aux + fh->iauxBase + sh->index; | |
4347 | (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir); | |
4348 | if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum) | |
4349 | return 0; | |
4350 | ||
4351 | ax++; | |
4352 | (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn); | |
4353 | if (rn->rfd == 0xfff) | |
4354 | rf = AUX_GET_ISYM (fh->fBigendian, ax + 1); | |
4355 | else | |
4356 | rf = rn->rfd; | |
4357 | if (rf != -1) | |
4358 | return 0; | |
4359 | return 1; | |
4360 | } | |
4361 | ||
4362 | /* Lookup the type at relative index RN. Return it in TPP | |
4363 | if found and in any event come up with its name PNAME. | |
4364 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). | |
025bb325 | 4365 | Return value says how many aux symbols we ate. */ |
c906108c SS |
4366 | |
4367 | static int | |
3e43a32a MS |
4368 | cross_ref (int fd, union aux_ext *ax, struct type **tpp, |
4369 | enum type_code type_code, | |
025bb325 | 4370 | /* Use to alloc new type if none is found. */ |
fba45db2 | 4371 | char **pname, int bigend, char *sym_name) |
c906108c SS |
4372 | { |
4373 | RNDXR rn[1]; | |
4374 | unsigned int rf; | |
4375 | int result = 1; | |
4376 | FDR *fh; | |
4377 | char *esh; | |
4378 | SYMR sh; | |
4379 | int xref_fd; | |
4380 | struct mdebug_pending *pend; | |
4381 | ||
c5aa993b | 4382 | *tpp = (struct type *) NULL; |
c906108c SS |
4383 | |
4384 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
4385 | ||
025bb325 | 4386 | /* Escape index means 'the next one'. */ |
c906108c SS |
4387 | if (rn->rfd == 0xfff) |
4388 | { | |
4389 | result++; | |
4390 | rf = AUX_GET_ISYM (bigend, ax + 1); | |
4391 | } | |
4392 | else | |
4393 | { | |
4394 | rf = rn->rfd; | |
4395 | } | |
4396 | ||
4397 | /* mips cc uses a rf of -1 for opaque struct definitions. | |
4398 | Set TYPE_FLAG_STUB for these types so that check_typedef will | |
4399 | resolve them if the struct gets defined in another compilation unit. */ | |
4400 | if (rf == -1) | |
4401 | { | |
4402 | *pname = "<undefined>"; | |
3e43a32a | 4403 | *tpp = init_type (type_code, 0, TYPE_FLAG_STUB, |
dd707e8e | 4404 | (char *) NULL, mdebugread_objfile); |
c906108c SS |
4405 | return result; |
4406 | } | |
4407 | ||
4408 | /* mips cc uses an escaped rn->index of 0 for struct return types | |
025bb325 | 4409 | of procedures that were compiled without -g. These will always remain |
c906108c SS |
4410 | undefined. */ |
4411 | if (rn->rfd == 0xfff && rn->index == 0) | |
4412 | { | |
4413 | *pname = "<undefined>"; | |
4414 | return result; | |
4415 | } | |
4416 | ||
4417 | /* Find the relative file descriptor and the symbol in it. */ | |
4418 | fh = get_rfd (fd, rf); | |
4419 | xref_fd = fh - debug_info->fdr; | |
4420 | ||
4421 | if (rn->index >= fh->csym) | |
4422 | { | |
4423 | /* File indirect entry is corrupt. */ | |
4424 | *pname = "<illegal>"; | |
23136709 | 4425 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4426 | return result; |
4427 | } | |
4428 | ||
4429 | /* If we have processed this symbol then we left a forwarding | |
4430 | pointer to the type in the pending list. If not, we`ll put | |
4431 | it in a list of pending types, to be processed later when | |
4432 | the file will be. In any event, we collect the name for the | |
4433 | type here. */ | |
4434 | ||
4435 | esh = ((char *) debug_info->external_sym | |
4436 | + ((fh->isymBase + rn->index) | |
4437 | * debug_swap->external_sym_size)); | |
4438 | (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh); | |
4439 | ||
4440 | /* Make sure that this type of cross reference can be handled. */ | |
4441 | if ((sh.sc != scInfo | |
4442 | || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect | |
4443 | && sh.st != stStruct && sh.st != stUnion | |
4444 | && sh.st != stEnum)) | |
c5aa993b | 4445 | && (sh.st != stBlock || !SC_IS_COMMON (sh.sc))) |
c906108c SS |
4446 | { |
4447 | /* File indirect entry is corrupt. */ | |
4448 | *pname = "<illegal>"; | |
23136709 | 4449 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4450 | return result; |
4451 | } | |
4452 | ||
4453 | *pname = debug_info->ss + fh->issBase + sh.iss; | |
4454 | ||
4455 | pend = is_pending_symbol (fh, esh); | |
4456 | if (pend) | |
4457 | *tpp = pend->t; | |
4458 | else | |
4459 | { | |
4460 | /* We have not yet seen this type. */ | |
4461 | ||
4462 | if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect) | |
4463 | { | |
4464 | TIR tir; | |
4465 | ||
4466 | /* alpha cc puts out a stTypedef with a sh.iss of zero for | |
4467 | two cases: | |
4468 | a) forward declarations of structs/unions/enums which are not | |
c5aa993b | 4469 | defined in this compilation unit. |
025bb325 | 4470 | For these the type will be void. This is a bad design decision |
c5aa993b JM |
4471 | as cross referencing across compilation units is impossible |
4472 | due to the missing name. | |
c906108c | 4473 | b) forward declarations of structs/unions/enums/typedefs which |
c5aa993b | 4474 | are defined later in this file or in another file in the same |
025bb325 | 4475 | compilation unit. Irix5 cc uses a stIndirect symbol for this. |
c5aa993b | 4476 | Simply cross reference those again to get the true type. |
c906108c SS |
4477 | The forward references are not entered in the pending list and |
4478 | in the symbol table. */ | |
4479 | ||
4480 | (*debug_swap->swap_tir_in) (bigend, | |
4481 | &(debug_info->external_aux | |
4482 | + fh->iauxBase + sh.index)->a_ti, | |
4483 | &tir); | |
4484 | if (tir.tq0 != tqNil) | |
23136709 | 4485 | complaint (&symfile_complaints, |
e2e0b3e5 | 4486 | _("illegal tq0 in forward typedef for %s"), sym_name); |
c906108c SS |
4487 | switch (tir.bt) |
4488 | { | |
4489 | case btVoid: | |
4490 | *tpp = init_type (type_code, 0, 0, (char *) NULL, | |
dd707e8e | 4491 | mdebugread_objfile); |
c5aa993b | 4492 | *pname = "<undefined>"; |
c906108c SS |
4493 | break; |
4494 | ||
4495 | case btStruct: | |
4496 | case btUnion: | |
4497 | case btEnum: | |
4498 | cross_ref (xref_fd, | |
4499 | (debug_info->external_aux | |
4500 | + fh->iauxBase + sh.index + 1), | |
4501 | tpp, type_code, pname, | |
4502 | fh->fBigendian, sym_name); | |
4503 | break; | |
4504 | ||
4505 | case btTypedef: | |
025bb325 | 4506 | /* Follow a forward typedef. This might recursively |
c5aa993b JM |
4507 | call cross_ref till we get a non typedef'ed type. |
4508 | FIXME: This is not correct behaviour, but gdb currently | |
025bb325 | 4509 | cannot handle typedefs without type copying. Type |
c5aa993b JM |
4510 | copying is impossible as we might have mutual forward |
4511 | references between two files and the copied type would not | |
4512 | get filled in when we later parse its definition. */ | |
c906108c SS |
4513 | *tpp = parse_type (xref_fd, |
4514 | debug_info->external_aux + fh->iauxBase, | |
4515 | sh.index, | |
c5aa993b | 4516 | (int *) NULL, |
c906108c SS |
4517 | fh->fBigendian, |
4518 | debug_info->ss + fh->issBase + sh.iss); | |
4519 | add_pending (fh, esh, *tpp); | |
4520 | break; | |
4521 | ||
4522 | default: | |
23136709 | 4523 | complaint (&symfile_complaints, |
e2e0b3e5 | 4524 | _("illegal bt %d in forward typedef for %s"), tir.bt, |
23136709 | 4525 | sym_name); |
c906108c | 4526 | *tpp = init_type (type_code, 0, 0, (char *) NULL, |
dd707e8e | 4527 | mdebugread_objfile); |
c906108c SS |
4528 | break; |
4529 | } | |
4530 | return result; | |
4531 | } | |
4532 | else if (sh.st == stTypedef) | |
4533 | { | |
025bb325 | 4534 | /* Parse the type for a normal typedef. This might recursively call |
c906108c SS |
4535 | cross_ref till we get a non typedef'ed type. |
4536 | FIXME: This is not correct behaviour, but gdb currently | |
025bb325 | 4537 | cannot handle typedefs without type copying. But type copying is |
c906108c SS |
4538 | impossible as we might have mutual forward references between |
4539 | two files and the copied type would not get filled in when | |
4540 | we later parse its definition. */ | |
4541 | *tpp = parse_type (xref_fd, | |
4542 | debug_info->external_aux + fh->iauxBase, | |
4543 | sh.index, | |
c5aa993b | 4544 | (int *) NULL, |
c906108c SS |
4545 | fh->fBigendian, |
4546 | debug_info->ss + fh->issBase + sh.iss); | |
4547 | } | |
4548 | else | |
4549 | { | |
4550 | /* Cross reference to a struct/union/enum which is defined | |
4551 | in another file in the same compilation unit but that file | |
4552 | has not been parsed yet. | |
4553 | Initialize the type only, it will be filled in when | |
4554 | it's definition is parsed. */ | |
dd707e8e | 4555 | *tpp = init_type (type_code, 0, 0, (char *) NULL, mdebugread_objfile); |
c906108c SS |
4556 | } |
4557 | add_pending (fh, esh, *tpp); | |
4558 | } | |
4559 | ||
025bb325 | 4560 | /* We used one auxent normally, two if we got a "next one" rf. */ |
c906108c SS |
4561 | return result; |
4562 | } | |
4563 | ||
4564 | ||
4565 | /* Quick&dirty lookup procedure, to avoid the MI ones that require | |
025bb325 | 4566 | keeping the symtab sorted. */ |
c906108c SS |
4567 | |
4568 | static struct symbol * | |
3977b71f | 4569 | mylookup_symbol (char *name, const struct block *block, |
176620f1 | 4570 | domain_enum domain, enum address_class class) |
c906108c | 4571 | { |
8157b174 | 4572 | struct block_iterator iter; |
de4f826b | 4573 | int inc; |
e88c90f2 | 4574 | struct symbol *sym; |
c906108c | 4575 | |
c906108c | 4576 | inc = name[0]; |
de4f826b | 4577 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
c906108c | 4578 | { |
3567439c | 4579 | if (SYMBOL_LINKAGE_NAME (sym)[0] == inc |
176620f1 | 4580 | && SYMBOL_DOMAIN (sym) == domain |
c906108c | 4581 | && SYMBOL_CLASS (sym) == class |
3567439c | 4582 | && strcmp (SYMBOL_LINKAGE_NAME (sym), name) == 0) |
c906108c | 4583 | return sym; |
c906108c | 4584 | } |
e88c90f2 | 4585 | |
c906108c SS |
4586 | block = BLOCK_SUPERBLOCK (block); |
4587 | if (block) | |
176620f1 | 4588 | return mylookup_symbol (name, block, domain, class); |
c906108c SS |
4589 | return 0; |
4590 | } | |
4591 | ||
4592 | ||
de4f826b | 4593 | /* Add a new symbol S to a block B. */ |
c906108c SS |
4594 | |
4595 | static void | |
c7efd0b9 | 4596 | add_symbol (struct symbol *s, struct symtab *symtab, struct block *b) |
c906108c | 4597 | { |
c7efd0b9 | 4598 | SYMBOL_SYMTAB (s) = symtab; |
de4f826b | 4599 | dict_add_symbol (BLOCK_DICT (b), s); |
c906108c SS |
4600 | } |
4601 | ||
025bb325 | 4602 | /* Add a new block B to a symtab S. */ |
c906108c SS |
4603 | |
4604 | static void | |
fba45db2 | 4605 | add_block (struct block *b, struct symtab *s) |
c906108c | 4606 | { |
346d1dfe TT |
4607 | /* Cast away "const", but that's ok because we're building the |
4608 | symtab and blockvector here. */ | |
4609 | struct blockvector *bv = (struct blockvector *) BLOCKVECTOR (s); | |
c906108c | 4610 | |
12b9c64f | 4611 | bv = (struct blockvector *) xrealloc ((void *) bv, |
c906108c SS |
4612 | (sizeof (struct blockvector) |
4613 | + BLOCKVECTOR_NBLOCKS (bv) | |
4614 | * sizeof (bv->block))); | |
4615 | if (bv != BLOCKVECTOR (s)) | |
4616 | BLOCKVECTOR (s) = bv; | |
4617 | ||
4618 | BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b; | |
4619 | } | |
4620 | ||
4621 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. | |
4622 | MIPS' linenumber encoding might need more than one byte | |
4623 | to describe it, LAST is used to detect these continuation lines. | |
4624 | ||
4625 | Combining lines with the same line number seems like a bad idea. | |
4626 | E.g: There could be a line number entry with the same line number after the | |
4627 | prologue and GDB should not ignore it (this is a better way to find | |
4628 | a prologue than mips_skip_prologue). | |
4629 | But due to the compressed line table format there are line number entries | |
4630 | for the same line which are needed to bridge the gap to the next | |
025bb325 | 4631 | line number entry. These entries have a bogus address info with them |
c906108c SS |
4632 | and we are unable to tell them from intended duplicate line number |
4633 | entries. | |
4634 | This is another reason why -ggdb debugging format is preferable. */ | |
4635 | ||
4636 | static int | |
fba45db2 | 4637 | add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last) |
c906108c SS |
4638 | { |
4639 | /* DEC c89 sometimes produces zero linenos which confuse gdb. | |
025bb325 | 4640 | Change them to something sensible. */ |
c906108c SS |
4641 | if (lineno == 0) |
4642 | lineno = 1; | |
4643 | if (last == 0) | |
025bb325 | 4644 | last = -2; /* Make sure we record first line. */ |
c906108c | 4645 | |
025bb325 | 4646 | if (last == lineno) /* Skip continuation lines. */ |
c906108c SS |
4647 | return lineno; |
4648 | ||
4649 | lt->item[lt->nitems].line = lineno; | |
4650 | lt->item[lt->nitems++].pc = adr << 2; | |
4651 | return lineno; | |
4652 | } | |
4653 | \f | |
025bb325 | 4654 | /* Sorting and reordering procedures. */ |
c906108c | 4655 | |
025bb325 | 4656 | /* Blocks with a smaller low bound should come first. */ |
c906108c SS |
4657 | |
4658 | static int | |
12b9c64f | 4659 | compare_blocks (const void *arg1, const void *arg2) |
c906108c | 4660 | { |
887432a5 | 4661 | LONGEST addr_diff; |
c906108c SS |
4662 | struct block **b1 = (struct block **) arg1; |
4663 | struct block **b2 = (struct block **) arg2; | |
4664 | ||
4665 | addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2))); | |
4666 | if (addr_diff == 0) | |
4667 | return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1))); | |
4668 | return addr_diff; | |
4669 | } | |
4670 | ||
4671 | /* Sort the blocks of a symtab S. | |
4672 | Reorder the blocks in the blockvector by code-address, | |
025bb325 | 4673 | as required by some MI search routines. */ |
c906108c SS |
4674 | |
4675 | static void | |
fba45db2 | 4676 | sort_blocks (struct symtab *s) |
c906108c | 4677 | { |
346d1dfe TT |
4678 | /* We have to cast away const here, but this is ok because we're |
4679 | constructing the blockvector in this code. */ | |
4680 | struct blockvector *bv = (struct blockvector *) BLOCKVECTOR (s); | |
c906108c | 4681 | |
49323895 | 4682 | if (BLOCKVECTOR_NBLOCKS (bv) <= FIRST_LOCAL_BLOCK) |
c906108c SS |
4683 | { |
4684 | /* Cosmetic */ | |
4685 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0) | |
4686 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0; | |
4687 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0) | |
4688 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0; | |
4689 | return; | |
4690 | } | |
4691 | /* | |
4692 | * This is very unfortunate: normally all functions are compiled in | |
4693 | * the order they are found, but if the file is compiled -O3 things | |
4694 | * are very different. It would be nice to find a reliable test | |
4695 | * to detect -O3 images in advance. | |
4696 | */ | |
49323895 | 4697 | if (BLOCKVECTOR_NBLOCKS (bv) > FIRST_LOCAL_BLOCK + 1) |
c906108c SS |
4698 | qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK), |
4699 | BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK, | |
4700 | sizeof (struct block *), | |
4701 | compare_blocks); | |
4702 | ||
4703 | { | |
aa1ee363 AC |
4704 | CORE_ADDR high = 0; |
4705 | int i, j = BLOCKVECTOR_NBLOCKS (bv); | |
c906108c SS |
4706 | |
4707 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) | |
4708 | if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i))) | |
4709 | high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)); | |
4710 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high; | |
4711 | } | |
4712 | ||
4713 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = | |
4714 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK)); | |
4715 | ||
4716 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4717 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4718 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4719 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4720 | } | |
4721 | \f | |
4722 | ||
025bb325 | 4723 | /* Constructor/restructor/destructor procedures. */ |
c906108c | 4724 | |
de4f826b | 4725 | /* Allocate a new symtab for NAME. Needs an estimate of how many |
025bb325 | 4726 | linenumbers MAXLINES we'll put in it. */ |
c906108c SS |
4727 | |
4728 | static struct symtab * | |
72b9f47f | 4729 | new_symtab (const char *name, int maxlines, struct objfile *objfile) |
c906108c SS |
4730 | { |
4731 | struct symtab *s = allocate_symtab (name, objfile); | |
346d1dfe | 4732 | struct blockvector *bv; |
c906108c SS |
4733 | |
4734 | LINETABLE (s) = new_linetable (maxlines); | |
4735 | ||
025bb325 | 4736 | /* All symtabs must have at least two blocks. */ |
346d1dfe TT |
4737 | bv = new_bvect (2); |
4738 | BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = new_block (NON_FUNCTION_BLOCK); | |
4739 | BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = new_block (NON_FUNCTION_BLOCK); | |
4740 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4741 | BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
4742 | BLOCKVECTOR (s) = bv; | |
c906108c | 4743 | |
1c9e8358 | 4744 | s->debugformat = "ECOFF"; |
c906108c SS |
4745 | return (s); |
4746 | } | |
4747 | ||
025bb325 | 4748 | /* Allocate a new partial_symtab NAME. */ |
c906108c SS |
4749 | |
4750 | static struct partial_symtab * | |
fba45db2 | 4751 | new_psymtab (char *name, struct objfile *objfile) |
c906108c SS |
4752 | { |
4753 | struct partial_symtab *psymtab; | |
4754 | ||
4755 | psymtab = allocate_psymtab (name, objfile); | |
d4f3574e | 4756 | psymtab->section_offsets = objfile->section_offsets; |
c906108c | 4757 | |
025bb325 | 4758 | /* Keep a backpointer to the file's symbols. */ |
c906108c | 4759 | |
e38df1d0 TT |
4760 | psymtab->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
4761 | sizeof (struct symloc)); | |
12b9c64f | 4762 | memset (psymtab->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
4763 | CUR_BFD (psymtab) = cur_bfd; |
4764 | DEBUG_SWAP (psymtab) = debug_swap; | |
4765 | DEBUG_INFO (psymtab) = debug_info; | |
4766 | PENDING_LIST (psymtab) = pending_list; | |
4767 | ||
025bb325 | 4768 | /* The way to turn this into a symtab is to call... */ |
257e7a09 | 4769 | psymtab->read_symtab = mdebug_read_symtab; |
c906108c SS |
4770 | return (psymtab); |
4771 | } | |
4772 | ||
4773 | ||
4774 | /* Allocate a linetable array of the given SIZE. Since the struct | |
4775 | already includes one item, we subtract one when calculating the | |
4776 | proper size to allocate. */ | |
4777 | ||
4778 | static struct linetable * | |
fba45db2 | 4779 | new_linetable (int size) |
c906108c SS |
4780 | { |
4781 | struct linetable *l; | |
4782 | ||
30cc903e TT |
4783 | if (size > 1) |
4784 | --size; | |
4785 | size = size * sizeof (l->item) + sizeof (struct linetable); | |
c906108c SS |
4786 | l = (struct linetable *) xmalloc (size); |
4787 | l->nitems = 0; | |
4788 | return l; | |
4789 | } | |
4790 | ||
025bb325 | 4791 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, |
c906108c SS |
4792 | I am not so sure about the 3.4 ones. |
4793 | ||
4794 | Since the struct linetable already includes one item, we subtract one when | |
4795 | calculating the proper size to allocate. */ | |
4796 | ||
4797 | static struct linetable * | |
fba45db2 | 4798 | shrink_linetable (struct linetable *lt) |
c906108c | 4799 | { |
12b9c64f | 4800 | return (struct linetable *) xrealloc ((void *) lt, |
c906108c SS |
4801 | (sizeof (struct linetable) |
4802 | + ((lt->nitems - 1) | |
4803 | * sizeof (lt->item)))); | |
4804 | } | |
4805 | ||
025bb325 | 4806 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ |
c906108c SS |
4807 | |
4808 | static struct blockvector * | |
fba45db2 | 4809 | new_bvect (int nblocks) |
c906108c SS |
4810 | { |
4811 | struct blockvector *bv; | |
4812 | int size; | |
4813 | ||
4814 | size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); | |
4815 | bv = (struct blockvector *) xzalloc (size); | |
4816 | ||
4817 | BLOCKVECTOR_NBLOCKS (bv) = nblocks; | |
4818 | ||
4819 | return bv; | |
4820 | } | |
4821 | ||
de4f826b DC |
4822 | /* Allocate and zero a new block, and set its BLOCK_DICT. If function |
4823 | is non-zero, assume the block is associated to a function, and make | |
4824 | sure that the symbols are stored linearly; otherwise, store them | |
4825 | hashed. */ | |
c906108c SS |
4826 | |
4827 | static struct block * | |
de4f826b | 4828 | new_block (enum block_type type) |
c906108c | 4829 | { |
a1632d59 DC |
4830 | /* FIXME: carlton/2003-09-11: This should use allocate_block to |
4831 | allocate the block. Which, in turn, suggests that the block | |
4832 | should be allocated on an obstack. */ | |
de4f826b | 4833 | struct block *retval = xzalloc (sizeof (struct block)); |
c906108c | 4834 | |
de4f826b DC |
4835 | if (type == FUNCTION_BLOCK) |
4836 | BLOCK_DICT (retval) = dict_create_linear_expandable (); | |
4837 | else | |
4838 | BLOCK_DICT (retval) = dict_create_hashed_expandable (); | |
c906108c | 4839 | |
de4f826b | 4840 | return retval; |
c906108c SS |
4841 | } |
4842 | ||
025bb325 | 4843 | /* Create a new symbol with printname NAME. */ |
c906108c SS |
4844 | |
4845 | static struct symbol * | |
fba45db2 | 4846 | new_symbol (char *name) |
c906108c | 4847 | { |
e623cf5d | 4848 | struct symbol *s = allocate_symbol (mdebugread_objfile); |
c906108c | 4849 | |
f85f34ed TT |
4850 | SYMBOL_SET_LANGUAGE (s, psymtab_language, |
4851 | &mdebugread_objfile->objfile_obstack); | |
dd707e8e | 4852 | SYMBOL_SET_NAMES (s, name, strlen (name), 1, mdebugread_objfile); |
c906108c SS |
4853 | return s; |
4854 | } | |
4855 | ||
025bb325 | 4856 | /* Create a new type with printname NAME. */ |
c906108c SS |
4857 | |
4858 | static struct type * | |
fba45db2 | 4859 | new_type (char *name) |
c906108c SS |
4860 | { |
4861 | struct type *t; | |
4862 | ||
dd707e8e | 4863 | t = alloc_type (mdebugread_objfile); |
c906108c | 4864 | TYPE_NAME (t) = name; |
b4ba55a1 | 4865 | INIT_CPLUS_SPECIFIC (t); |
c906108c SS |
4866 | return t; |
4867 | } | |
4868 | \f | |
4869 | /* Read ECOFF debugging information from a BFD section. This is | |
4870 | called from elfread.c. It parses the section into a | |
4871 | ecoff_debug_info struct, and then lets the rest of the file handle | |
4872 | it as normal. */ | |
4873 | ||
4874 | void | |
fba45db2 KB |
4875 | elfmdebug_build_psymtabs (struct objfile *objfile, |
4876 | const struct ecoff_debug_swap *swap, asection *sec) | |
c906108c SS |
4877 | { |
4878 | bfd *abfd = objfile->obfd; | |
4879 | struct ecoff_debug_info *info; | |
7134143f DJ |
4880 | struct cleanup *back_to; |
4881 | ||
4882 | /* FIXME: It's not clear whether we should be getting minimal symbol | |
4883 | information from .mdebug in an ELF file, or whether we will. | |
4884 | Re-initialize the minimal symbol reader in case we do. */ | |
4885 | ||
4886 | init_minimal_symbol_collection (); | |
4887 | back_to = make_cleanup_discard_minimal_symbols (); | |
c906108c SS |
4888 | |
4889 | info = ((struct ecoff_debug_info *) | |
8b92e4d5 | 4890 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
4891 | sizeof (struct ecoff_debug_info))); |
4892 | ||
4893 | if (!(*swap->read_debug_info) (abfd, sec, info)) | |
8a3fe4f8 | 4894 | error (_("Error reading ECOFF debugging information: %s"), |
c906108c SS |
4895 | bfd_errmsg (bfd_get_error ())); |
4896 | ||
d4f3574e | 4897 | mdebug_build_psymtabs (objfile, swap, info); |
7134143f DJ |
4898 | |
4899 | install_minimal_symbols (objfile); | |
4900 | do_cleanups (back_to); | |
c906108c | 4901 | } |
c906108c SS |
4902 | |
4903 | void | |
fba45db2 | 4904 | _initialize_mdebugread (void) |
c906108c | 4905 | { |
0a9d309a | 4906 | basic_type_data = register_objfile_data (); |
f1e6e072 TT |
4907 | |
4908 | mdebug_register_index | |
4909 | = register_symbol_register_impl (LOC_REGISTER, &mdebug_register_funcs); | |
4910 | mdebug_regparm_index | |
4911 | = register_symbol_register_impl (LOC_REGPARM_ADDR, &mdebug_register_funcs); | |
c906108c | 4912 | } |