Commit | Line | Data |
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c906108c | 1 | /* Read a symbol table in ECOFF format (Third-Eye). |
ee300cd4 | 2 | |
618f726f | 3 | Copyright (C) 1986-2016 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 | ||
43f3e411 | 240 | static struct compunit_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))); | |
19ba03f4 | 362 | fdr_src = (char *) info->external_fdr; |
c906108c SS |
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 | 432 | { |
fe978cb0 | 433 | struct parse_stack *newobj; |
c906108c | 434 | |
025bb325 | 435 | /* Reuse frames if possible. */ |
c906108c | 436 | if (top_stack && top_stack->prev) |
fe978cb0 | 437 | newobj = top_stack->prev; |
c906108c | 438 | else |
8d749320 | 439 | newobj = XCNEW (struct parse_stack); |
025bb325 | 440 | /* Initialize new frame with previous content. */ |
c906108c SS |
441 | if (top_stack) |
442 | { | |
fe978cb0 | 443 | struct parse_stack *prev = newobj->prev; |
c906108c | 444 | |
fe978cb0 PA |
445 | *newobj = *top_stack; |
446 | top_stack->prev = newobj; | |
447 | newobj->prev = prev; | |
448 | newobj->next = top_stack; | |
c906108c | 449 | } |
fe978cb0 | 450 | top_stack = newobj; |
c906108c SS |
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 | |
0fde2c53 DE |
524 | static void |
525 | reg_value_complaint (int regnum, int num_regs, const char *sym) | |
526 | { | |
527 | complaint (&symfile_complaints, | |
528 | _("bad register number %d (max %d) in symbol %s"), | |
529 | regnum, num_regs - 1, sym); | |
530 | } | |
531 | ||
025bb325 | 532 | /* Parse a single symbol. Mostly just make up a GDB symbol for it. |
c906108c SS |
533 | For blocks, procedures and types we open a new lexical context. |
534 | This is basically just a big switch on the symbol's type. Argument | |
535 | AX is the base pointer of aux symbols for this file (fh->iauxBase). | |
536 | EXT_SH points to the unswapped symbol, which is needed for struct, | |
537 | union, etc., types; it is NULL for an EXTR. BIGEND says whether | |
538 | aux symbols are big-endian or little-endian. Return count of | |
539 | SYMR's handled (normally one). */ | |
540 | ||
768a979c UW |
541 | static int |
542 | mdebug_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
543 | { | |
0fde2c53 DE |
544 | int regno = gdbarch_ecoff_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); |
545 | ||
546 | if (regno < 0 | |
547 | || regno >= (gdbarch_num_regs (gdbarch) | |
548 | + gdbarch_num_pseudo_regs (gdbarch))) | |
549 | { | |
550 | reg_value_complaint (regno, | |
551 | gdbarch_num_regs (gdbarch) | |
552 | + gdbarch_num_pseudo_regs (gdbarch), | |
553 | SYMBOL_PRINT_NAME (sym)); | |
554 | ||
555 | regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless. */ | |
556 | } | |
557 | ||
558 | return regno; | |
768a979c UW |
559 | } |
560 | ||
561 | static const struct symbol_register_ops mdebug_register_funcs = { | |
562 | mdebug_reg_to_regnum | |
563 | }; | |
564 | ||
f1e6e072 TT |
565 | /* The "aclass" indices for computed symbols. */ |
566 | ||
567 | static int mdebug_register_index; | |
568 | static int mdebug_regparm_index; | |
569 | ||
d2242e34 PA |
570 | /* Common code for symbols describing data. */ |
571 | ||
572 | static void | |
573 | add_data_symbol (SYMR *sh, union aux_ext *ax, int bigend, | |
574 | struct symbol *s, int aclass_index, struct block *b, | |
575 | struct objfile *objfile, char *name) | |
576 | { | |
577 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; | |
578 | SYMBOL_ACLASS_INDEX (s) = aclass_index; | |
579 | add_symbol (s, top_stack->cur_st, b); | |
580 | ||
581 | /* Type could be missing if file is compiled without debugging info. */ | |
582 | if (SC_IS_UNDEF (sh->sc) | |
583 | || sh->sc == scNil || sh->index == indexNil) | |
584 | SYMBOL_TYPE (s) = objfile_type (objfile)->nodebug_data_symbol; | |
585 | else | |
586 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
587 | /* Value of a data symbol is its memory address. */ | |
588 | } | |
589 | ||
c906108c | 590 | static int |
fba45db2 KB |
591 | parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend, |
592 | struct section_offsets *section_offsets, struct objfile *objfile) | |
c906108c | 593 | { |
5e2b427d | 594 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 595 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; |
12b9c64f | 596 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c SS |
597 | char *name; |
598 | struct symbol *s; | |
599 | struct block *b; | |
600 | struct mdebug_pending *pend; | |
601 | struct type *t; | |
602 | struct field *f; | |
603 | int count = 1; | |
c906108c SS |
604 | TIR tir; |
605 | long svalue = sh->value; | |
606 | int bitsize; | |
607 | ||
608 | if (ext_sh == (char *) NULL) | |
609 | name = debug_info->ssext + sh->iss; | |
610 | else | |
611 | name = debug_info->ss + cur_fdr->issBase + sh->iss; | |
612 | ||
613 | switch (sh->sc) | |
614 | { | |
615 | case scText: | |
616 | case scRConst: | |
617 | /* Do not relocate relative values. | |
c5aa993b JM |
618 | The value of a stEnd symbol is the displacement from the |
619 | corresponding start symbol value. | |
620 | The value of a stBlock symbol is the displacement from the | |
621 | procedure address. */ | |
c906108c | 622 | if (sh->st != stEnd && sh->st != stBlock) |
b8fbeb18 | 623 | sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
624 | break; |
625 | case scData: | |
626 | case scSData: | |
627 | case scRData: | |
628 | case scPData: | |
629 | case scXData: | |
b8fbeb18 | 630 | sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
631 | break; |
632 | case scBss: | |
633 | case scSBss: | |
b8fbeb18 | 634 | sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
635 | break; |
636 | } | |
637 | ||
638 | switch (sh->st) | |
639 | { | |
640 | case stNil: | |
641 | break; | |
642 | ||
025bb325 | 643 | case stGlobal: /* External symbol, goes into global block. */ |
439247b6 | 644 | b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack->cur_st), |
c906108c SS |
645 | GLOBAL_BLOCK); |
646 | s = new_symbol (name); | |
647 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
d2242e34 PA |
648 | add_data_symbol (sh, ax, bigend, s, LOC_STATIC, b, objfile, name); |
649 | break; | |
c906108c | 650 | |
025bb325 | 651 | case stStatic: /* Static data, goes into current block. */ |
c906108c SS |
652 | b = top_stack->cur_block; |
653 | s = new_symbol (name); | |
c5aa993b | 654 | if (SC_IS_COMMON (sh->sc)) |
c906108c SS |
655 | { |
656 | /* It is a FORTRAN common block. At least for SGI Fortran the | |
657 | address is not in the symbol; we need to fix it later in | |
658 | scan_file_globals. */ | |
3567439c | 659 | int bucket = hashname (SYMBOL_LINKAGE_NAME (s)); |
c906108c SS |
660 | SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket]; |
661 | global_sym_chain[bucket] = s; | |
662 | } | |
663 | else | |
664 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
d2242e34 PA |
665 | add_data_symbol (sh, ax, bigend, s, LOC_STATIC, b, objfile, name); |
666 | break; | |
c906108c | 667 | |
025bb325 | 668 | case stLocal: /* Local variable, goes into current block. */ |
768a979c UW |
669 | b = top_stack->cur_block; |
670 | s = new_symbol (name); | |
671 | SYMBOL_VALUE (s) = svalue; | |
c906108c | 672 | if (sh->sc == scRegister) |
d2242e34 PA |
673 | add_data_symbol (sh, ax, bigend, s, mdebug_register_index, |
674 | b, objfile, name); | |
c906108c | 675 | else |
d2242e34 PA |
676 | add_data_symbol (sh, ax, bigend, s, LOC_LOCAL, |
677 | b, objfile, name); | |
c906108c SS |
678 | break; |
679 | ||
025bb325 MS |
680 | case stParam: /* Arg to procedure, goes into current |
681 | block. */ | |
c906108c SS |
682 | max_gdbinfo++; |
683 | found_ecoff_debugging_info = 1; | |
684 | top_stack->numargs++; | |
685 | ||
686 | /* Special GNU C++ name. */ | |
687 | if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0) | |
025bb325 | 688 | name = "this"; /* FIXME, not alloc'd in obstack. */ |
c906108c SS |
689 | s = new_symbol (name); |
690 | ||
176620f1 | 691 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
2a2d4dc3 | 692 | SYMBOL_IS_ARGUMENT (s) = 1; |
c906108c SS |
693 | switch (sh->sc) |
694 | { | |
695 | case scRegister: | |
696 | /* Pass by value in register. */ | |
f1e6e072 | 697 | SYMBOL_ACLASS_INDEX (s) = mdebug_register_index; |
c906108c SS |
698 | break; |
699 | case scVar: | |
700 | /* Pass by reference on stack. */ | |
f1e6e072 | 701 | SYMBOL_ACLASS_INDEX (s) = LOC_REF_ARG; |
c906108c SS |
702 | break; |
703 | case scVarRegister: | |
704 | /* Pass by reference in register. */ | |
f1e6e072 | 705 | SYMBOL_ACLASS_INDEX (s) = mdebug_regparm_index; |
c906108c SS |
706 | break; |
707 | default: | |
708 | /* Pass by value on stack. */ | |
f1e6e072 | 709 | SYMBOL_ACLASS_INDEX (s) = LOC_ARG; |
c906108c SS |
710 | break; |
711 | } | |
712 | SYMBOL_VALUE (s) = svalue; | |
713 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
c7efd0b9 | 714 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
715 | break; |
716 | ||
025bb325 | 717 | case stLabel: /* label, goes into current block. */ |
c906108c | 718 | s = new_symbol (name); |
025bb325 | 719 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; /* So that it can be used */ |
f1e6e072 | 720 | SYMBOL_ACLASS_INDEX (s) = LOC_LABEL; /* but not misused. */ |
c906108c | 721 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; |
46bf5051 | 722 | SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_int; |
c7efd0b9 | 723 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
724 | break; |
725 | ||
025bb325 MS |
726 | case stProc: /* Procedure, usually goes into global block. */ |
727 | case stStaticProc: /* Static procedure, goes into current block. */ | |
1fb4c65b JB |
728 | /* For stProc symbol records, we need to check the storage class |
729 | as well, as only (stProc, scText) entries represent "real" | |
730 | procedures - See the Compaq document titled "Object File / | |
731 | Symbol Table Format Specification" for more information. | |
732 | If the storage class is not scText, we discard the whole block | |
733 | of symbol records for this stProc. */ | |
734 | if (sh->st == stProc && sh->sc != scText) | |
735 | { | |
736 | char *ext_tsym = ext_sh; | |
737 | int keep_counting = 1; | |
738 | SYMR tsym; | |
739 | ||
740 | while (keep_counting) | |
741 | { | |
742 | ext_tsym += external_sym_size; | |
743 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
744 | count++; | |
745 | switch (tsym.st) | |
746 | { | |
747 | case stParam: | |
748 | break; | |
749 | case stEnd: | |
750 | keep_counting = 0; | |
751 | break; | |
752 | default: | |
753 | complaint (&symfile_complaints, | |
e2e0b3e5 | 754 | _("unknown symbol type 0x%x"), sh->st); |
1fb4c65b JB |
755 | break; |
756 | } | |
757 | } | |
758 | break; | |
759 | } | |
c906108c | 760 | s = new_symbol (name); |
176620f1 | 761 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
f1e6e072 | 762 | SYMBOL_ACLASS_INDEX (s) = LOC_BLOCK; |
025bb325 | 763 | /* Type of the return value. */ |
c5aa993b | 764 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
46bf5051 | 765 | t = objfile_type (objfile)->builtin_int; |
c906108c SS |
766 | else |
767 | { | |
768 | t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name); | |
ee300cd4 AC |
769 | if (strcmp (name, "malloc") == 0 |
770 | && TYPE_CODE (t) == TYPE_CODE_VOID) | |
c906108c SS |
771 | { |
772 | /* I don't know why, but, at least under Alpha GNU/Linux, | |
c5aa993b JM |
773 | when linking against a malloc without debugging |
774 | symbols, its read as a function returning void---this | |
775 | is bad because it means we cannot call functions with | |
776 | string arguments interactively; i.e., "call | |
777 | printf("howdy\n")" would fail with the error message | |
778 | "program has no memory available". To avoid this, we | |
779 | patch up the type and make it void* | |
025bb325 | 780 | instead. (davidm@azstarnet.com). */ |
c906108c SS |
781 | t = make_pointer_type (t, NULL); |
782 | } | |
783 | } | |
784 | b = top_stack->cur_block; | |
785 | if (sh->st == stProc) | |
786 | { | |
439247b6 DE |
787 | const struct blockvector *bv |
788 | = SYMTAB_BLOCKVECTOR (top_stack->cur_st); | |
b8d56208 | 789 | |
c906108c SS |
790 | /* The next test should normally be true, but provides a |
791 | hook for nested functions (which we don't want to make | |
28397f59 | 792 | global). */ |
c906108c SS |
793 | if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) |
794 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
795 | /* Irix 5 sometimes has duplicate names for the same | |
796 | function. We want to add such names up at the global | |
797 | level, not as a nested function. */ | |
798 | else if (sh->value == top_stack->procadr) | |
799 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
800 | } | |
c7efd0b9 | 801 | add_symbol (s, top_stack->cur_st, b); |
c906108c | 802 | |
025bb325 | 803 | /* Make a type for the procedure itself. */ |
c906108c SS |
804 | SYMBOL_TYPE (s) = lookup_function_type (t); |
805 | ||
1e698235 DJ |
806 | /* All functions in C++ have prototypes. For C we don't have enough |
807 | information in the debug info. */ | |
808 | if (SYMBOL_LANGUAGE (s) == language_cplus) | |
876cecd0 | 809 | TYPE_PROTOTYPED (SYMBOL_TYPE (s)) = 1; |
1e698235 | 810 | |
025bb325 | 811 | /* Create and enter a new lexical context. */ |
de4f826b | 812 | b = new_block (FUNCTION_BLOCK); |
c906108c SS |
813 | SYMBOL_BLOCK_VALUE (s) = b; |
814 | BLOCK_FUNCTION (b) = s; | |
815 | BLOCK_START (b) = BLOCK_END (b) = sh->value; | |
816 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
817 | add_block (b, top_stack->cur_st); | |
818 | ||
025bb325 | 819 | /* Not if we only have partial info. */ |
c5aa993b | 820 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
821 | break; |
822 | ||
823 | push_parse_stack (); | |
824 | top_stack->cur_block = b; | |
825 | top_stack->blocktype = sh->st; | |
826 | top_stack->cur_type = SYMBOL_TYPE (s); | |
827 | top_stack->cur_field = -1; | |
828 | top_stack->procadr = sh->value; | |
829 | top_stack->numargs = 0; | |
830 | break; | |
831 | ||
832 | /* Beginning of code for structure, union, and enum definitions. | |
c5aa993b | 833 | They all share a common set of local variables, defined here. */ |
c906108c SS |
834 | { |
835 | enum type_code type_code; | |
836 | char *ext_tsym; | |
837 | int nfields; | |
838 | long max_value; | |
839 | struct field *f; | |
840 | ||
025bb325 | 841 | case stStruct: /* Start a block defining a struct type. */ |
c906108c SS |
842 | type_code = TYPE_CODE_STRUCT; |
843 | goto structured_common; | |
844 | ||
025bb325 | 845 | case stUnion: /* Start a block defining a union type. */ |
c906108c SS |
846 | type_code = TYPE_CODE_UNION; |
847 | goto structured_common; | |
848 | ||
025bb325 | 849 | case stEnum: /* Start a block defining an enum type. */ |
c906108c SS |
850 | type_code = TYPE_CODE_ENUM; |
851 | goto structured_common; | |
852 | ||
025bb325 | 853 | case stBlock: /* Either a lexical block, or some type. */ |
c5aa993b | 854 | if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc)) |
c906108c SS |
855 | goto case_stBlock_code; /* Lexical block */ |
856 | ||
857 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ | |
858 | ||
859 | /* Common code for handling struct, union, enum, and/or as-yet- | |
860 | unknown-type blocks of info about structured data. `type_code' | |
861 | has been set to the proper TYPE_CODE, if we know it. */ | |
862 | structured_common: | |
863 | found_ecoff_debugging_info = 1; | |
864 | push_parse_stack (); | |
865 | top_stack->blocktype = stBlock; | |
866 | ||
025bb325 | 867 | /* First count the number of fields and the highest value. */ |
c906108c SS |
868 | nfields = 0; |
869 | max_value = 0; | |
870 | for (ext_tsym = ext_sh + external_sym_size; | |
871 | ; | |
872 | ext_tsym += external_sym_size) | |
873 | { | |
874 | SYMR tsym; | |
875 | ||
876 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
877 | ||
878 | switch (tsym.st) | |
879 | { | |
880 | case stEnd: | |
f0394be6 | 881 | /* C++ encodes class types as structures where there the |
025bb325 | 882 | methods are encoded as stProc. The scope of stProc |
f0394be6 JB |
883 | symbols also ends with stEnd, thus creating a risk of |
884 | taking the wrong stEnd symbol record as the end of | |
885 | the current struct, which would cause GDB to undercount | |
886 | the real number of fields in this struct. To make sure | |
887 | we really reached the right stEnd symbol record, we | |
888 | check the associated name, and match it against the | |
889 | struct name. Since method names are mangled while | |
890 | the class name is not, there is no risk of having a | |
891 | method whose name is identical to the class name | |
892 | (in particular constructor method names are different | |
893 | from the class name). There is therefore no risk that | |
7bde8967 KB |
894 | this check stops the count on the StEnd of a method. |
895 | ||
896 | Also, assume that we're really at the end when tsym.iss | |
897 | is 0 (issNull). */ | |
898 | if (tsym.iss == issNull | |
899 | || strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss, | |
900 | name) == 0) | |
f0394be6 JB |
901 | goto end_of_fields; |
902 | break; | |
c906108c SS |
903 | |
904 | case stMember: | |
905 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
906 | { |
907 | /* If the type of the member is Nil (or Void), | |
908 | without qualifiers, assume the tag is an | |
909 | enumeration. | |
910 | Alpha cc -migrate enums are recognized by a zero | |
911 | index and a zero symbol value. | |
912 | DU 4.0 cc enums are recognized by a member type of | |
913 | btEnum without qualifiers and a zero symbol value. */ | |
914 | if (tsym.index == indexNil | |
915 | || (tsym.index == 0 && sh->value == 0)) | |
916 | type_code = TYPE_CODE_ENUM; | |
917 | else | |
918 | { | |
919 | (*debug_swap->swap_tir_in) (bigend, | |
920 | &ax[tsym.index].a_ti, | |
921 | &tir); | |
922 | if ((tir.bt == btNil || tir.bt == btVoid | |
923 | || (tir.bt == btEnum && sh->value == 0)) | |
924 | && tir.tq0 == tqNil) | |
925 | type_code = TYPE_CODE_ENUM; | |
926 | } | |
927 | } | |
c906108c SS |
928 | nfields++; |
929 | if (tsym.value > max_value) | |
930 | max_value = tsym.value; | |
931 | break; | |
932 | ||
933 | case stBlock: | |
934 | case stUnion: | |
935 | case stEnum: | |
936 | case stStruct: | |
937 | { | |
938 | #if 0 | |
939 | /* This is a no-op; is it trying to tell us something | |
940 | we should be checking? */ | |
c5aa993b | 941 | if (tsym.sc == scVariant); /*UNIMPLEMENTED */ |
c906108c SS |
942 | #endif |
943 | if (tsym.index != 0) | |
944 | { | |
945 | /* This is something like a struct within a | |
c5aa993b JM |
946 | struct. Skip over the fields of the inner |
947 | struct. The -1 is because the for loop will | |
948 | increment ext_tsym. */ | |
c906108c SS |
949 | ext_tsym = ((char *) debug_info->external_sym |
950 | + ((cur_fdr->isymBase + tsym.index - 1) | |
951 | * external_sym_size)); | |
952 | } | |
953 | } | |
954 | break; | |
955 | ||
956 | case stTypedef: | |
957 | /* mips cc puts out a typedef for struct x if it is not yet | |
958 | defined when it encounters | |
959 | struct y { struct x *xp; }; | |
025bb325 | 960 | Just ignore it. */ |
c906108c SS |
961 | break; |
962 | ||
963 | case stIndirect: | |
964 | /* Irix5 cc puts out a stIndirect for struct x if it is not | |
965 | yet defined when it encounters | |
966 | struct y { struct x *xp; }; | |
025bb325 | 967 | Just ignore it. */ |
c906108c SS |
968 | break; |
969 | ||
970 | default: | |
23136709 | 971 | complaint (&symfile_complaints, |
3e43a32a MS |
972 | _("declaration block contains " |
973 | "unhandled symbol type %d"), | |
23136709 | 974 | tsym.st); |
c906108c SS |
975 | } |
976 | } | |
82ae4854 | 977 | end_of_fields: |
c906108c SS |
978 | |
979 | /* In an stBlock, there is no way to distinguish structs, | |
980 | unions, and enums at this point. This is a bug in the | |
981 | original design (that has been fixed with the recent | |
982 | addition of the stStruct, stUnion, and stEnum symbol | |
983 | types.) The way you can tell is if/when you see a variable | |
984 | or field of that type. In that case the variable's type | |
985 | (in the AUX table) says if the type is struct, union, or | |
986 | enum, and points back to the stBlock here. So you can | |
987 | patch the tag kind up later - but only if there actually is | |
988 | a variable or field of that type. | |
989 | ||
990 | So until we know for sure, we will guess at this point. | |
991 | The heuristic is: | |
992 | If the first member has index==indexNil or a void type, | |
993 | assume we have an enumeration. | |
994 | Otherwise, if there is more than one member, and all | |
995 | the members have offset 0, assume we have a union. | |
996 | Otherwise, assume we have a struct. | |
997 | ||
998 | The heuristic could guess wrong in the case of of an | |
999 | enumeration with no members or a union with one (or zero) | |
1000 | members, or when all except the last field of a struct have | |
1001 | width zero. These are uncommon and/or illegal situations, | |
1002 | and in any case guessing wrong probably doesn't matter | |
1003 | much. | |
1004 | ||
1005 | But if we later do find out we were wrong, we fixup the tag | |
1006 | kind. Members of an enumeration must be handled | |
1007 | differently from struct/union fields, and that is harder to | |
1008 | patch up, but luckily we shouldn't need to. (If there are | |
1009 | any enumeration members, we can tell for sure it's an enum | |
025bb325 | 1010 | here.) */ |
c906108c SS |
1011 | |
1012 | if (type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
1013 | { |
1014 | if (nfields > 1 && max_value == 0) | |
1015 | type_code = TYPE_CODE_UNION; | |
1016 | else | |
1017 | type_code = TYPE_CODE_STRUCT; | |
1018 | } | |
c906108c SS |
1019 | |
1020 | /* Create a new type or use the pending type. */ | |
1021 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1022 | if (pend == (struct mdebug_pending *) NULL) | |
1023 | { | |
1024 | t = new_type (NULL); | |
1025 | add_pending (cur_fdr, ext_sh, t); | |
1026 | } | |
1027 | else | |
1028 | t = pend->t; | |
1029 | ||
1030 | /* Do not set the tag name if it is a compiler generated tag name | |
1031 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. | |
1032 | Alpha cc puts out an sh->iss of zero for those. */ | |
1033 | if (sh->iss == 0 || name[0] == '.' || name[0] == '\0') | |
1034 | TYPE_TAG_NAME (t) = NULL; | |
1035 | else | |
dd707e8e | 1036 | TYPE_TAG_NAME (t) = obconcat (&mdebugread_objfile->objfile_obstack, |
3e43a32a | 1037 | name, (char *) NULL); |
c906108c SS |
1038 | |
1039 | TYPE_CODE (t) = type_code; | |
1040 | TYPE_LENGTH (t) = sh->value; | |
1041 | TYPE_NFIELDS (t) = nfields; | |
1042 | TYPE_FIELDS (t) = f = ((struct field *) | |
1043 | TYPE_ALLOC (t, | |
1044 | nfields * sizeof (struct field))); | |
1045 | ||
1046 | if (type_code == TYPE_CODE_ENUM) | |
1047 | { | |
1048 | int unsigned_enum = 1; | |
1049 | ||
025bb325 | 1050 | /* This is a non-empty enum. */ |
c906108c SS |
1051 | |
1052 | /* DEC c89 has the number of enumerators in the sh.value field, | |
1053 | not the type length, so we have to compensate for that | |
1054 | incompatibility quirk. | |
1055 | This might do the wrong thing for an enum with one or two | |
1056 | enumerators and gcc -gcoff -fshort-enums, but these cases | |
1057 | are hopefully rare enough. | |
1058 | Alpha cc -migrate has a sh.value field of zero, we adjust | |
1059 | that too. */ | |
1060 | if (TYPE_LENGTH (t) == TYPE_NFIELDS (t) | |
1061 | || TYPE_LENGTH (t) == 0) | |
5e2b427d | 1062 | TYPE_LENGTH (t) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
c906108c SS |
1063 | for (ext_tsym = ext_sh + external_sym_size; |
1064 | ; | |
1065 | ext_tsym += external_sym_size) | |
1066 | { | |
1067 | SYMR tsym; | |
1068 | struct symbol *enum_sym; | |
1069 | ||
1070 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
1071 | ||
1072 | if (tsym.st != stMember) | |
1073 | break; | |
1074 | ||
14e75d8e | 1075 | SET_FIELD_ENUMVAL (*f, tsym.value); |
c906108c SS |
1076 | FIELD_TYPE (*f) = t; |
1077 | FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss; | |
1078 | FIELD_BITSIZE (*f) = 0; | |
1079 | ||
e623cf5d | 1080 | enum_sym = allocate_symbol (mdebugread_objfile); |
3567439c | 1081 | SYMBOL_SET_LINKAGE_NAME |
10f0c4bb | 1082 | (enum_sym, |
224c3ddb SM |
1083 | (char *) obstack_copy0 (&mdebugread_objfile->objfile_obstack, |
1084 | f->name, strlen (f->name))); | |
f1e6e072 | 1085 | SYMBOL_ACLASS_INDEX (enum_sym) = LOC_CONST; |
c906108c | 1086 | SYMBOL_TYPE (enum_sym) = t; |
176620f1 | 1087 | SYMBOL_DOMAIN (enum_sym) = VAR_DOMAIN; |
c906108c SS |
1088 | SYMBOL_VALUE (enum_sym) = tsym.value; |
1089 | if (SYMBOL_VALUE (enum_sym) < 0) | |
1090 | unsigned_enum = 0; | |
c7efd0b9 | 1091 | add_symbol (enum_sym, top_stack->cur_st, top_stack->cur_block); |
c906108c | 1092 | |
025bb325 | 1093 | /* Skip the stMembers that we've handled. */ |
c906108c SS |
1094 | count++; |
1095 | f++; | |
1096 | } | |
1097 | if (unsigned_enum) | |
876cecd0 | 1098 | TYPE_UNSIGNED (t) = 1; |
c906108c | 1099 | } |
025bb325 | 1100 | /* Make this the current type. */ |
c906108c SS |
1101 | top_stack->cur_type = t; |
1102 | top_stack->cur_field = 0; | |
1103 | ||
1104 | /* Do not create a symbol for alpha cc unnamed structs. */ | |
1105 | if (sh->iss == 0) | |
1106 | break; | |
1107 | ||
1108 | /* gcc puts out an empty struct for an opaque struct definitions, | |
1109 | do not create a symbol for it either. */ | |
1110 | if (TYPE_NFIELDS (t) == 0) | |
1111 | { | |
876cecd0 | 1112 | TYPE_STUB (t) = 1; |
c906108c SS |
1113 | break; |
1114 | } | |
1115 | ||
1116 | s = new_symbol (name); | |
176620f1 | 1117 | SYMBOL_DOMAIN (s) = STRUCT_DOMAIN; |
f1e6e072 | 1118 | SYMBOL_ACLASS_INDEX (s) = LOC_TYPEDEF; |
c906108c SS |
1119 | SYMBOL_VALUE (s) = 0; |
1120 | SYMBOL_TYPE (s) = t; | |
c7efd0b9 | 1121 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1122 | break; |
1123 | ||
1124 | /* End of local variables shared by struct, union, enum, and | |
1125 | block (as yet unknown struct/union/enum) processing. */ | |
1126 | } | |
1127 | ||
1128 | case_stBlock_code: | |
1129 | found_ecoff_debugging_info = 1; | |
025bb325 MS |
1130 | /* Beginnning of (code) block. Value of symbol |
1131 | is the displacement from procedure start. */ | |
c906108c SS |
1132 | push_parse_stack (); |
1133 | ||
1134 | /* Do not start a new block if this is the outermost block of a | |
c5aa993b JM |
1135 | procedure. This allows the LOC_BLOCK symbol to point to the |
1136 | block with the local variables, so funcname::var works. */ | |
c906108c SS |
1137 | if (top_stack->blocktype == stProc |
1138 | || top_stack->blocktype == stStaticProc) | |
1139 | { | |
1140 | top_stack->blocktype = stNil; | |
1141 | break; | |
1142 | } | |
1143 | ||
1144 | top_stack->blocktype = stBlock; | |
de4f826b | 1145 | b = new_block (NON_FUNCTION_BLOCK); |
c906108c SS |
1146 | BLOCK_START (b) = sh->value + top_stack->procadr; |
1147 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1148 | top_stack->cur_block = b; | |
1149 | add_block (b, top_stack->cur_st); | |
1150 | break; | |
1151 | ||
1152 | case stEnd: /* end (of anything) */ | |
c5aa993b | 1153 | if (sh->sc == scInfo || SC_IS_COMMON (sh->sc)) |
c906108c SS |
1154 | { |
1155 | /* Finished with type */ | |
1156 | top_stack->cur_type = 0; | |
1157 | } | |
1158 | else if (sh->sc == scText && | |
1159 | (top_stack->blocktype == stProc || | |
1160 | top_stack->blocktype == stStaticProc)) | |
1161 | { | |
1162 | /* Finished with procedure */ | |
439247b6 DE |
1163 | const struct blockvector *bv |
1164 | = SYMTAB_BLOCKVECTOR (top_stack->cur_st); | |
f92761ec | 1165 | struct mdebug_extra_func_info *e; |
de4f826b | 1166 | struct block *b = top_stack->cur_block; |
c906108c SS |
1167 | struct type *ftype = top_stack->cur_type; |
1168 | int i; | |
1169 | ||
1170 | BLOCK_END (top_stack->cur_block) += sh->value; /* size */ | |
1171 | ||
025bb325 | 1172 | /* Make up special symbol to contain procedure specific info. */ |
f92761ec | 1173 | s = new_symbol (MDEBUG_EFI_SYMBOL_NAME); |
176620f1 | 1174 | SYMBOL_DOMAIN (s) = LABEL_DOMAIN; |
f1e6e072 | 1175 | SYMBOL_ACLASS_INDEX (s) = LOC_CONST; |
dd707e8e | 1176 | SYMBOL_TYPE (s) = objfile_type (mdebugread_objfile)->builtin_void; |
f92761ec | 1177 | e = ((struct mdebug_extra_func_info *) |
dd707e8e | 1178 | obstack_alloc (&mdebugread_objfile->objfile_obstack, |
f92761ec AC |
1179 | sizeof (struct mdebug_extra_func_info))); |
1180 | memset (e, 0, sizeof (struct mdebug_extra_func_info)); | |
9918cab9 | 1181 | SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e; |
c906108c SS |
1182 | e->numargs = top_stack->numargs; |
1183 | e->pdr.framereg = -1; | |
c7efd0b9 | 1184 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c | 1185 | |
c906108c SS |
1186 | /* f77 emits proc-level with address bounds==[0,0], |
1187 | So look for such child blocks, and patch them. */ | |
1188 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
1189 | { | |
1190 | struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i); | |
b8d56208 | 1191 | |
c906108c SS |
1192 | if (BLOCK_SUPERBLOCK (b_bad) == b |
1193 | && BLOCK_START (b_bad) == top_stack->procadr | |
1194 | && BLOCK_END (b_bad) == top_stack->procadr) | |
1195 | { | |
1196 | BLOCK_START (b_bad) = BLOCK_START (b); | |
1197 | BLOCK_END (b_bad) = BLOCK_END (b); | |
1198 | } | |
1199 | } | |
1200 | ||
1201 | if (TYPE_NFIELDS (ftype) <= 0) | |
1202 | { | |
1203 | /* No parameter type information is recorded with the function's | |
025bb325 | 1204 | type. Set that from the type of the parameter symbols. */ |
c906108c SS |
1205 | int nparams = top_stack->numargs; |
1206 | int iparams; | |
1207 | struct symbol *sym; | |
1208 | ||
1209 | if (nparams > 0) | |
1210 | { | |
8157b174 | 1211 | struct block_iterator iter; |
b8d56208 | 1212 | |
c906108c SS |
1213 | TYPE_NFIELDS (ftype) = nparams; |
1214 | TYPE_FIELDS (ftype) = (struct field *) | |
1215 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
c5aa993b | 1216 | |
de4f826b DC |
1217 | iparams = 0; |
1218 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
c906108c | 1219 | { |
de4f826b DC |
1220 | if (iparams == nparams) |
1221 | break; | |
1222 | ||
2a2d4dc3 | 1223 | if (SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1224 | { |
c906108c | 1225 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); |
8176bb6d | 1226 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 1227 | iparams++; |
c906108c SS |
1228 | } |
1229 | } | |
1230 | } | |
1231 | } | |
1232 | } | |
1233 | else if (sh->sc == scText && top_stack->blocktype == stBlock) | |
1234 | { | |
025bb325 | 1235 | /* End of (code) block. The value of the symbol is the |
c906108c | 1236 | displacement from the procedure`s start address of the |
025bb325 | 1237 | end of this block. */ |
c906108c | 1238 | BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr; |
c906108c SS |
1239 | } |
1240 | else if (sh->sc == scText && top_stack->blocktype == stNil) | |
1241 | { | |
1242 | /* End of outermost block. Pop parse stack and ignore. The | |
1243 | following stEnd of stProc will take care of the block. */ | |
1244 | ; | |
1245 | } | |
1246 | else if (sh->sc == scText && top_stack->blocktype == stFile) | |
1247 | { | |
1248 | /* End of file. Pop parse stack and ignore. Higher | |
1249 | level code deals with this. */ | |
1250 | ; | |
1251 | } | |
1252 | else | |
23136709 | 1253 | complaint (&symfile_complaints, |
e2e0b3e5 | 1254 | _("stEnd with storage class %d not handled"), sh->sc); |
c906108c | 1255 | |
025bb325 | 1256 | pop_parse_stack (); /* Restore previous lexical context. */ |
c906108c SS |
1257 | break; |
1258 | ||
1259 | case stMember: /* member of struct or union */ | |
1260 | f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++]; | |
1261 | FIELD_NAME (*f) = name; | |
d6a843b5 | 1262 | SET_FIELD_BITPOS (*f, sh->value); |
c906108c | 1263 | bitsize = 0; |
3e43a32a MS |
1264 | FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, |
1265 | &bitsize, bigend, name); | |
c906108c SS |
1266 | FIELD_BITSIZE (*f) = bitsize; |
1267 | break; | |
1268 | ||
1269 | case stIndirect: /* forward declaration on Irix5 */ | |
1270 | /* Forward declarations from Irix5 cc are handled by cross_ref, | |
c5aa993b | 1271 | skip them. */ |
c906108c SS |
1272 | break; |
1273 | ||
1274 | case stTypedef: /* type definition */ | |
1275 | found_ecoff_debugging_info = 1; | |
1276 | ||
1277 | /* Typedefs for forward declarations and opaque structs from alpha cc | |
c5aa993b | 1278 | are handled by cross_ref, skip them. */ |
c906108c SS |
1279 | if (sh->iss == 0) |
1280 | break; | |
1281 | ||
1282 | /* Parse the type or use the pending type. */ | |
1283 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1284 | if (pend == (struct mdebug_pending *) NULL) | |
1285 | { | |
c5aa993b | 1286 | t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name); |
c906108c SS |
1287 | add_pending (cur_fdr, ext_sh, t); |
1288 | } | |
1289 | else | |
1290 | t = pend->t; | |
1291 | ||
025bb325 MS |
1292 | /* Mips cc puts out a typedef with the name of the struct for forward |
1293 | declarations. These should not go into the symbol table and | |
c5aa993b JM |
1294 | TYPE_NAME should not be set for them. |
1295 | They can't be distinguished from an intentional typedef to | |
1296 | the same name however: | |
1297 | x.h: | |
1298 | struct x { int ix; int jx; }; | |
1299 | struct xx; | |
1300 | x.c: | |
1301 | typedef struct x x; | |
1302 | struct xx {int ixx; int jxx; }; | |
1303 | generates a cross referencing stTypedef for x and xx. | |
1304 | The user visible effect of this is that the type of a pointer | |
1305 | to struct foo sometimes is given as `foo *' instead of `struct foo *'. | |
1306 | The problem is fixed with alpha cc and Irix5 cc. */ | |
c906108c SS |
1307 | |
1308 | /* However if the typedef cross references to an opaque aggregate, it | |
c5aa993b | 1309 | is safe to omit it from the symbol table. */ |
c906108c SS |
1310 | |
1311 | if (has_opaque_xref (cur_fdr, sh)) | |
1312 | break; | |
1313 | s = new_symbol (name); | |
176620f1 | 1314 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
f1e6e072 | 1315 | SYMBOL_ACLASS_INDEX (s) = LOC_TYPEDEF; |
c906108c SS |
1316 | SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block; |
1317 | SYMBOL_TYPE (s) = t; | |
c7efd0b9 | 1318 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1319 | |
1320 | /* Incomplete definitions of structs should not get a name. */ | |
1321 | if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL | |
1322 | && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0 | |
c5aa993b | 1323 | || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT |
c906108c SS |
1324 | && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION))) |
1325 | { | |
1326 | if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR | |
1327 | || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC) | |
1328 | { | |
1329 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1330 | foo" or "function returning foo", we better not set |
1331 | the TYPE_NAME. If the program contains "typedef char | |
1332 | *caddr_t;", we don't want all variables of type char | |
1333 | * to print as caddr_t. This is not just a | |
1334 | consequence of GDB's type management; CC and GCC (at | |
1335 | least through version 2.4) both output variables of | |
1336 | either type char * or caddr_t with the type | |
1337 | refering to the stTypedef symbol for caddr_t. If a future | |
1338 | compiler cleans this up it GDB is not ready for it | |
1339 | yet, but if it becomes ready we somehow need to | |
1340 | disable this check (without breaking the PCC/GCC2.4 | |
1341 | case). | |
1342 | ||
1343 | Sigh. | |
1344 | ||
1345 | Fortunately, this check seems not to be necessary | |
1346 | for anything except pointers or functions. */ | |
c906108c SS |
1347 | } |
1348 | else | |
3567439c | 1349 | TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_LINKAGE_NAME (s); |
c906108c SS |
1350 | } |
1351 | break; | |
1352 | ||
1353 | case stFile: /* file name */ | |
1354 | push_parse_stack (); | |
1355 | top_stack->blocktype = sh->st; | |
1356 | break; | |
1357 | ||
1358 | /* I`ve never seen these for C */ | |
1359 | case stRegReloc: | |
1360 | break; /* register relocation */ | |
1361 | case stForward: | |
1362 | break; /* forwarding address */ | |
1363 | case stConstant: | |
1364 | break; /* constant */ | |
1365 | default: | |
e2e0b3e5 | 1366 | complaint (&symfile_complaints, _("unknown symbol type 0x%x"), sh->st); |
c906108c SS |
1367 | break; |
1368 | } | |
1369 | ||
1370 | return count; | |
1371 | } | |
1372 | ||
0a9d309a UW |
1373 | /* Basic types. */ |
1374 | ||
1375 | static const struct objfile_data *basic_type_data; | |
1376 | ||
1377 | static struct type * | |
1378 | basic_type (int bt, struct objfile *objfile) | |
1379 | { | |
1380 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
19ba03f4 SM |
1381 | struct type **map_bt |
1382 | = (struct type **) objfile_data (objfile, basic_type_data); | |
0a9d309a UW |
1383 | struct type *tp; |
1384 | ||
1385 | if (bt >= btMax) | |
1386 | return NULL; | |
1387 | ||
1388 | if (!map_bt) | |
1389 | { | |
1390 | map_bt = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
1391 | btMax, struct type *); | |
1392 | set_objfile_data (objfile, basic_type_data, map_bt); | |
1393 | } | |
1394 | ||
1395 | if (map_bt[bt]) | |
1396 | return map_bt[bt]; | |
1397 | ||
1398 | switch (bt) | |
1399 | { | |
1400 | case btNil: | |
46bf5051 | 1401 | tp = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1402 | break; |
1403 | ||
1404 | case btAdr: | |
1405 | tp = init_type (TYPE_CODE_PTR, 4, TYPE_FLAG_UNSIGNED, | |
1406 | "adr_32", objfile); | |
46bf5051 | 1407 | TYPE_TARGET_TYPE (tp) = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1408 | break; |
1409 | ||
1410 | case btChar: | |
1411 | tp = init_type (TYPE_CODE_INT, 1, 0, | |
1412 | "char", objfile); | |
1413 | break; | |
1414 | ||
1415 | case btUChar: | |
1416 | tp = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
1417 | "unsigned char", objfile); | |
1418 | break; | |
1419 | ||
1420 | case btShort: | |
1421 | tp = init_type (TYPE_CODE_INT, 2, 0, | |
1422 | "short", objfile); | |
1423 | break; | |
1424 | ||
1425 | case btUShort: | |
1426 | tp = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
1427 | "unsigned short", objfile); | |
1428 | break; | |
1429 | ||
1430 | case btInt: | |
1431 | tp = init_type (TYPE_CODE_INT, 4, 0, | |
1432 | "int", objfile); | |
1433 | break; | |
1434 | ||
1435 | case btUInt: | |
1436 | tp = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1437 | "unsigned int", objfile); | |
1438 | break; | |
1439 | ||
1440 | case btLong: | |
1441 | tp = init_type (TYPE_CODE_INT, 4, 0, | |
1442 | "long", objfile); | |
1443 | break; | |
1444 | ||
1445 | case btULong: | |
1446 | tp = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1447 | "unsigned long", objfile); | |
1448 | break; | |
1449 | ||
1450 | case btFloat: | |
1451 | tp = init_type (TYPE_CODE_FLT, | |
1452 | gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1453 | "float", objfile); | |
1454 | break; | |
1455 | ||
1456 | case btDouble: | |
1457 | tp = init_type (TYPE_CODE_FLT, | |
1458 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1459 | "double", objfile); | |
1460 | break; | |
1461 | ||
1462 | case btComplex: | |
1463 | tp = init_type (TYPE_CODE_COMPLEX, | |
1464 | 2 * gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1465 | "complex", objfile); | |
1466 | TYPE_TARGET_TYPE (tp) = basic_type (btFloat, objfile); | |
1467 | break; | |
1468 | ||
1469 | case btDComplex: | |
1470 | tp = init_type (TYPE_CODE_COMPLEX, | |
1471 | 2 * gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1472 | "double complex", objfile); | |
1473 | TYPE_TARGET_TYPE (tp) = basic_type (btDouble, objfile); | |
1474 | break; | |
1475 | ||
1476 | case btFixedDec: | |
1477 | /* We use TYPE_CODE_INT to print these as integers. Does this do any | |
1478 | good? Would we be better off with TYPE_CODE_ERROR? Should | |
1479 | TYPE_CODE_ERROR print things in hex if it knows the size? */ | |
1480 | tp = init_type (TYPE_CODE_INT, | |
1481 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1482 | "fixed decimal", objfile); | |
1483 | break; | |
1484 | ||
1485 | case btFloatDec: | |
1486 | tp = init_type (TYPE_CODE_ERROR, | |
1487 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1488 | "floating decimal", objfile); | |
1489 | break; | |
1490 | ||
1491 | case btString: | |
1492 | /* Is a "string" the way btString means it the same as TYPE_CODE_STRING? | |
1493 | FIXME. */ | |
1494 | tp = init_type (TYPE_CODE_STRING, 1, 0, | |
1495 | "string", objfile); | |
1496 | break; | |
1497 | ||
1498 | case btVoid: | |
46bf5051 | 1499 | tp = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1500 | break; |
1501 | ||
1502 | case btLong64: | |
1503 | tp = init_type (TYPE_CODE_INT, 8, 0, | |
1504 | "long", objfile); | |
1505 | break; | |
1506 | ||
1507 | case btULong64: | |
1508 | tp = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
1509 | "unsigned long", objfile); | |
1510 | break; | |
1511 | ||
1512 | case btLongLong64: | |
1513 | tp = init_type (TYPE_CODE_INT, 8, 0, | |
1514 | "long long", objfile); | |
1515 | break; | |
1516 | ||
1517 | case btULongLong64: | |
1518 | tp = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
1519 | "unsigned long long", objfile); | |
1520 | break; | |
1521 | ||
1522 | case btAdr64: | |
1523 | tp = init_type (TYPE_CODE_PTR, 8, TYPE_FLAG_UNSIGNED, | |
1524 | "adr_64", objfile); | |
46bf5051 | 1525 | TYPE_TARGET_TYPE (tp) = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1526 | break; |
1527 | ||
1528 | case btInt64: | |
1529 | tp = init_type (TYPE_CODE_INT, 8, 0, | |
1530 | "int", objfile); | |
1531 | break; | |
1532 | ||
1533 | case btUInt64: | |
1534 | tp = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
1535 | "unsigned int", objfile); | |
1536 | break; | |
1537 | ||
1538 | default: | |
1539 | tp = NULL; | |
1540 | break; | |
1541 | } | |
1542 | ||
1543 | map_bt[bt] = tp; | |
1544 | return tp; | |
1545 | } | |
1546 | ||
c906108c | 1547 | /* Parse the type information provided in the raw AX entries for |
025bb325 | 1548 | the symbol SH. Return the bitfield size in BS, in case. |
c906108c SS |
1549 | We must byte-swap the AX entries before we use them; BIGEND says whether |
1550 | they are big-endian or little-endian (from fh->fBigendian). */ | |
1551 | ||
1552 | static struct type * | |
fba45db2 KB |
1553 | parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs, |
1554 | int bigend, char *sym_name) | |
c906108c | 1555 | { |
c906108c SS |
1556 | TIR t[1]; |
1557 | struct type *tp = 0; | |
1558 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1559 | ||
025bb325 | 1560 | /* Handle undefined types, they have indexNil. */ |
c906108c | 1561 | if (aux_index == indexNil) |
dd707e8e | 1562 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1563 | |
1564 | /* Handle corrupt aux indices. */ | |
1565 | if (aux_index >= (debug_info->fdr + fd)->caux) | |
1566 | { | |
23136709 | 1567 | index_complaint (sym_name); |
dd707e8e | 1568 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1569 | } |
1570 | ax += aux_index; | |
1571 | ||
1572 | /* Use aux as a type information record, map its basic type. */ | |
1573 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
dd707e8e | 1574 | tp = basic_type (t->bt, mdebugread_objfile); |
0a9d309a | 1575 | if (tp == NULL) |
c906108c | 1576 | { |
025bb325 | 1577 | /* Cannot use builtin types -- build our own. */ |
c906108c SS |
1578 | switch (t->bt) |
1579 | { | |
1580 | case btStruct: | |
1581 | type_code = TYPE_CODE_STRUCT; | |
1582 | break; | |
1583 | case btUnion: | |
1584 | type_code = TYPE_CODE_UNION; | |
1585 | break; | |
1586 | case btEnum: | |
1587 | type_code = TYPE_CODE_ENUM; | |
1588 | break; | |
1589 | case btRange: | |
1590 | type_code = TYPE_CODE_RANGE; | |
1591 | break; | |
1592 | case btSet: | |
1593 | type_code = TYPE_CODE_SET; | |
1594 | break; | |
1595 | case btIndirect: | |
025bb325 | 1596 | /* alpha cc -migrate uses this for typedefs. The true type will |
c906108c SS |
1597 | be obtained by crossreferencing below. */ |
1598 | type_code = TYPE_CODE_ERROR; | |
1599 | break; | |
1600 | case btTypedef: | |
025bb325 | 1601 | /* alpha cc uses this for typedefs. The true type will be |
c906108c SS |
1602 | obtained by crossreferencing below. */ |
1603 | type_code = TYPE_CODE_ERROR; | |
1604 | break; | |
1605 | default: | |
23136709 | 1606 | basic_type_complaint (t->bt, sym_name); |
dd707e8e | 1607 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1608 | } |
1609 | } | |
1610 | ||
025bb325 | 1611 | /* Move on to next aux. */ |
c906108c SS |
1612 | ax++; |
1613 | ||
1614 | if (t->fBitfield) | |
1615 | { | |
1616 | int width = AUX_GET_WIDTH (bigend, ax); | |
b8d56208 | 1617 | |
25caa7a8 | 1618 | /* Inhibit core dumps if TIR is corrupted. */ |
c5aa993b | 1619 | if (bs == (int *) NULL) |
c906108c SS |
1620 | { |
1621 | /* Alpha cc -migrate encodes char and unsigned char types | |
1622 | as short and unsigned short types with a field width of 8. | |
1623 | Enum types also have a field width which we ignore for now. */ | |
1624 | if (t->bt == btShort && width == 8) | |
dd707e8e | 1625 | tp = basic_type (btChar, mdebugread_objfile); |
c906108c | 1626 | else if (t->bt == btUShort && width == 8) |
dd707e8e | 1627 | tp = basic_type (btUChar, mdebugread_objfile); |
c906108c SS |
1628 | else if (t->bt == btEnum) |
1629 | ; | |
1630 | else | |
3e43a32a MS |
1631 | complaint (&symfile_complaints, |
1632 | _("can't handle TIR fBitfield for %s"), | |
23136709 | 1633 | sym_name); |
c906108c SS |
1634 | } |
1635 | else | |
c5aa993b | 1636 | *bs = width; |
c906108c SS |
1637 | ax++; |
1638 | } | |
1639 | ||
1640 | /* A btIndirect entry cross references to an aux entry containing | |
1641 | the type. */ | |
1642 | if (t->bt == btIndirect) | |
1643 | { | |
1644 | RNDXR rn[1]; | |
1645 | int rf; | |
1646 | FDR *xref_fh; | |
1647 | int xref_fd; | |
1648 | ||
1649 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
1650 | ax++; | |
1651 | if (rn->rfd == 0xfff) | |
1652 | { | |
1653 | rf = AUX_GET_ISYM (bigend, ax); | |
1654 | ax++; | |
1655 | } | |
1656 | else | |
1657 | rf = rn->rfd; | |
1658 | ||
1659 | if (rf == -1) | |
1660 | { | |
23136709 | 1661 | complaint (&symfile_complaints, |
e2e0b3e5 | 1662 | _("unable to cross ref btIndirect for %s"), sym_name); |
dd707e8e | 1663 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1664 | } |
1665 | xref_fh = get_rfd (fd, rf); | |
1666 | xref_fd = xref_fh - debug_info->fdr; | |
1667 | tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase, | |
c5aa993b | 1668 | rn->index, (int *) NULL, xref_fh->fBigendian, sym_name); |
c906108c SS |
1669 | } |
1670 | ||
1671 | /* All these types really point to some (common) MIPS type | |
1672 | definition, and only the type-qualifiers fully identify | |
025bb325 | 1673 | them. We'll make the same effort at sharing. */ |
c906108c SS |
1674 | if (t->bt == btStruct || |
1675 | t->bt == btUnion || | |
1676 | t->bt == btEnum || | |
1677 | ||
c5aa993b JM |
1678 | /* btSet (I think) implies that the name is a tag name, not a typedef |
1679 | name. This apparently is a MIPS extension for C sets. */ | |
c906108c SS |
1680 | t->bt == btSet) |
1681 | { | |
1682 | char *name; | |
1683 | ||
1684 | /* Try to cross reference this type, build new type on failure. */ | |
1685 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1686 | if (tp == (struct type *) NULL) | |
dd707e8e | 1687 | tp = init_type (type_code, 0, 0, (char *) NULL, mdebugread_objfile); |
c906108c SS |
1688 | |
1689 | /* DEC c89 produces cross references to qualified aggregate types, | |
c5aa993b | 1690 | dereference them. */ |
c906108c SS |
1691 | while (TYPE_CODE (tp) == TYPE_CODE_PTR |
1692 | || TYPE_CODE (tp) == TYPE_CODE_ARRAY) | |
0004e5a2 | 1693 | tp = TYPE_TARGET_TYPE (tp); |
c906108c SS |
1694 | |
1695 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1696 | Any type may be returned from cross_ref if file indirect entries |
1697 | are corrupted. */ | |
c906108c SS |
1698 | if (TYPE_CODE (tp) != TYPE_CODE_STRUCT |
1699 | && TYPE_CODE (tp) != TYPE_CODE_UNION | |
1700 | && TYPE_CODE (tp) != TYPE_CODE_ENUM) | |
1701 | { | |
23136709 | 1702 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1703 | } |
1704 | else | |
1705 | { | |
c906108c SS |
1706 | /* Usually, TYPE_CODE(tp) is already type_code. The main |
1707 | exception is if we guessed wrong re struct/union/enum. | |
1708 | But for struct vs. union a wrong guess is harmless, so | |
1709 | don't complain(). */ | |
1710 | if ((TYPE_CODE (tp) == TYPE_CODE_ENUM | |
1711 | && type_code != TYPE_CODE_ENUM) | |
1712 | || (TYPE_CODE (tp) != TYPE_CODE_ENUM | |
1713 | && type_code == TYPE_CODE_ENUM)) | |
1714 | { | |
23136709 | 1715 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1716 | } |
1717 | ||
1718 | if (TYPE_CODE (tp) != type_code) | |
1719 | { | |
1720 | TYPE_CODE (tp) = type_code; | |
1721 | } | |
1722 | ||
1723 | /* Do not set the tag name if it is a compiler generated tag name | |
c5aa993b | 1724 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ |
c906108c SS |
1725 | if (name[0] == '.' || name[0] == '\0') |
1726 | TYPE_TAG_NAME (tp) = NULL; | |
1727 | else if (TYPE_TAG_NAME (tp) == NULL | |
6314a349 | 1728 | || strcmp (TYPE_TAG_NAME (tp), name) != 0) |
3e43a32a | 1729 | TYPE_TAG_NAME (tp) |
224c3ddb SM |
1730 | = ((const char *) |
1731 | obstack_copy0 (&mdebugread_objfile->objfile_obstack, | |
1732 | name, strlen (name))); | |
c906108c SS |
1733 | } |
1734 | } | |
1735 | ||
1736 | /* All these types really point to some (common) MIPS type | |
1737 | definition, and only the type-qualifiers fully identify | |
1738 | them. We'll make the same effort at sharing. | |
1739 | FIXME: We are not doing any guessing on range types. */ | |
1740 | if (t->bt == btRange) | |
1741 | { | |
1742 | char *name; | |
1743 | ||
1744 | /* Try to cross reference this type, build new type on failure. */ | |
1745 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1746 | if (tp == (struct type *) NULL) | |
dd707e8e | 1747 | tp = init_type (type_code, 0, 0, (char *) NULL, mdebugread_objfile); |
c906108c SS |
1748 | |
1749 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1750 | Any type may be returned from cross_ref if file indirect entries |
1751 | are corrupted. */ | |
c906108c SS |
1752 | if (TYPE_CODE (tp) != TYPE_CODE_RANGE) |
1753 | { | |
23136709 | 1754 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1755 | } |
1756 | else | |
1757 | { | |
1758 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
025bb325 | 1759 | exception is if we guessed wrong re struct/union/enum. */ |
c906108c SS |
1760 | if (TYPE_CODE (tp) != type_code) |
1761 | { | |
23136709 | 1762 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1763 | TYPE_CODE (tp) = type_code; |
1764 | } | |
ee300cd4 AC |
1765 | if (TYPE_NAME (tp) == NULL |
1766 | || strcmp (TYPE_NAME (tp), name) != 0) | |
10f0c4bb | 1767 | TYPE_NAME (tp) |
224c3ddb SM |
1768 | = ((const char *) |
1769 | obstack_copy0 (&mdebugread_objfile->objfile_obstack, | |
1770 | name, strlen (name))); | |
c906108c SS |
1771 | } |
1772 | } | |
1773 | if (t->bt == btTypedef) | |
1774 | { | |
1775 | char *name; | |
1776 | ||
1777 | /* Try to cross reference this type, it should succeed. */ | |
1778 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1779 | if (tp == (struct type *) NULL) | |
1780 | { | |
23136709 | 1781 | complaint (&symfile_complaints, |
e2e0b3e5 | 1782 | _("unable to cross ref btTypedef for %s"), sym_name); |
dd707e8e | 1783 | tp = basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1784 | } |
1785 | } | |
1786 | ||
025bb325 | 1787 | /* Deal with range types. */ |
c906108c SS |
1788 | if (t->bt == btRange) |
1789 | { | |
43bbcdc2 PH |
1790 | TYPE_NFIELDS (tp) = 0; |
1791 | TYPE_RANGE_DATA (tp) = ((struct range_bounds *) | |
1792 | TYPE_ZALLOC (tp, sizeof (struct range_bounds))); | |
262452ec | 1793 | TYPE_LOW_BOUND (tp) = AUX_GET_DNLOW (bigend, ax); |
c906108c | 1794 | ax++; |
262452ec | 1795 | TYPE_HIGH_BOUND (tp) = AUX_GET_DNHIGH (bigend, ax); |
c906108c SS |
1796 | ax++; |
1797 | } | |
1798 | ||
025bb325 MS |
1799 | /* Parse all the type qualifiers now. If there are more |
1800 | than 6 the game will continue in the next aux. */ | |
c906108c SS |
1801 | |
1802 | while (1) | |
1803 | { | |
1804 | #define PARSE_TQ(tq) \ | |
1805 | if (t->tq != tqNil) \ | |
1806 | ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \ | |
1807 | else \ | |
1808 | break; | |
1809 | ||
1810 | PARSE_TQ (tq0); | |
1811 | PARSE_TQ (tq1); | |
1812 | PARSE_TQ (tq2); | |
1813 | PARSE_TQ (tq3); | |
1814 | PARSE_TQ (tq4); | |
1815 | PARSE_TQ (tq5); | |
1816 | #undef PARSE_TQ | |
1817 | ||
1818 | /* mips cc 2.x and gcc never put out continued aux entries. */ | |
1819 | if (!t->continued) | |
1820 | break; | |
1821 | ||
1822 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1823 | ax++; | |
1824 | } | |
1825 | ||
1826 | /* Complain for illegal continuations due to corrupt aux entries. */ | |
1827 | if (t->continued) | |
3e43a32a MS |
1828 | complaint (&symfile_complaints, |
1829 | _("illegal TIR continued for %s"), sym_name); | |
c5aa993b | 1830 | |
c906108c SS |
1831 | return tp; |
1832 | } | |
1833 | ||
1834 | /* Make up a complex type from a basic one. Type is passed by | |
025bb325 | 1835 | reference in TPP and side-effected as necessary. The type |
c906108c SS |
1836 | qualifier TQ says how to handle the aux symbols at AX for |
1837 | the symbol SX we are currently analyzing. BIGEND says whether | |
1838 | aux symbols are big-endian or little-endian. | |
025bb325 | 1839 | Returns the number of aux symbols we parsed. */ |
c906108c SS |
1840 | |
1841 | static int | |
fba45db2 KB |
1842 | upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend, |
1843 | char *sym_name) | |
c906108c SS |
1844 | { |
1845 | int off; | |
1846 | struct type *t; | |
1847 | ||
025bb325 | 1848 | /* Used in array processing. */ |
c906108c SS |
1849 | int rf, id; |
1850 | FDR *fh; | |
1851 | struct type *range; | |
1852 | struct type *indx; | |
1853 | int lower, upper; | |
1854 | RNDXR rndx; | |
1855 | ||
1856 | switch (tq) | |
1857 | { | |
1858 | case tqPtr: | |
1859 | t = lookup_pointer_type (*tpp); | |
1860 | *tpp = t; | |
1861 | return 0; | |
1862 | ||
1863 | case tqProc: | |
1864 | t = lookup_function_type (*tpp); | |
1865 | *tpp = t; | |
1866 | return 0; | |
1867 | ||
1868 | case tqArray: | |
1869 | off = 0; | |
1870 | ||
025bb325 | 1871 | /* Determine and record the domain type (type of index). */ |
c906108c SS |
1872 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx); |
1873 | id = rndx.index; | |
1874 | rf = rndx.rfd; | |
1875 | if (rf == 0xfff) | |
1876 | { | |
1877 | ax++; | |
1878 | rf = AUX_GET_ISYM (bigend, ax); | |
1879 | off++; | |
1880 | } | |
1881 | fh = get_rfd (fd, rf); | |
1882 | ||
1883 | indx = parse_type (fh - debug_info->fdr, | |
1884 | debug_info->external_aux + fh->iauxBase, | |
1885 | id, (int *) NULL, bigend, sym_name); | |
1886 | ||
1887 | /* The bounds type should be an integer type, but might be anything | |
c5aa993b | 1888 | else due to corrupt aux entries. */ |
c906108c SS |
1889 | if (TYPE_CODE (indx) != TYPE_CODE_INT) |
1890 | { | |
23136709 | 1891 | complaint (&symfile_complaints, |
3e43a32a MS |
1892 | _("illegal array index type for %s, assuming int"), |
1893 | sym_name); | |
dd707e8e | 1894 | indx = objfile_type (mdebugread_objfile)->builtin_int; |
c906108c SS |
1895 | } |
1896 | ||
1897 | /* Get the bounds, and create the array type. */ | |
1898 | ax++; | |
1899 | lower = AUX_GET_DNLOW (bigend, ax); | |
1900 | ax++; | |
1901 | upper = AUX_GET_DNHIGH (bigend, ax); | |
1902 | ax++; | |
1903 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ | |
1904 | ||
0c9c3474 SA |
1905 | range = create_static_range_type ((struct type *) NULL, indx, |
1906 | lower, upper); | |
c906108c SS |
1907 | |
1908 | t = create_array_type ((struct type *) NULL, *tpp, range); | |
1909 | ||
1910 | /* We used to fill in the supplied array element bitsize | |
c5aa993b JM |
1911 | here if the TYPE_LENGTH of the target type was zero. |
1912 | This happens for a `pointer to an array of anonymous structs', | |
1913 | but in this case the array element bitsize is also zero, | |
1914 | so nothing is gained. | |
1915 | And we used to check the TYPE_LENGTH of the target type against | |
1916 | the supplied array element bitsize. | |
1917 | gcc causes a mismatch for `pointer to array of object', | |
1918 | since the sdb directives it uses do not have a way of | |
1919 | specifying the bitsize, but it does no harm (the | |
1920 | TYPE_LENGTH should be correct) and we should be able to | |
1921 | ignore the erroneous bitsize from the auxiliary entry safely. | |
1922 | dbx seems to ignore it too. */ | |
c906108c | 1923 | |
d6a843b5 | 1924 | /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */ |
c906108c | 1925 | if (TYPE_LENGTH (*tpp) == 0) |
d6a843b5 | 1926 | TYPE_TARGET_STUB (t) = 1; |
c906108c SS |
1927 | |
1928 | *tpp = t; | |
1929 | return 4 + off; | |
1930 | ||
1931 | case tqVol: | |
1932 | /* Volatile -- currently ignored */ | |
1933 | return 0; | |
1934 | ||
1935 | case tqConst: | |
1936 | /* Const -- currently ignored */ | |
1937 | return 0; | |
1938 | ||
1939 | default: | |
e2e0b3e5 | 1940 | complaint (&symfile_complaints, _("unknown type qualifier 0x%x"), tq); |
c906108c SS |
1941 | return 0; |
1942 | } | |
1943 | } | |
1944 | ||
1945 | ||
1946 | /* Parse a procedure descriptor record PR. Note that the procedure is | |
1947 | parsed _after_ the local symbols, now we just insert the extra | |
f92761ec | 1948 | information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has |
c906108c SS |
1949 | already been placed in the procedure's main block. Note also that |
1950 | images that have been partially stripped (ld -x) have been deprived | |
1951 | of local symbols, and we have to cope with them here. FIRST_OFF is | |
1952 | the offset of the first procedure for this FDR; we adjust the | |
1953 | address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab | |
f92761ec | 1954 | to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol |
c906108c SS |
1955 | in question, or NULL to use top_stack->cur_block. */ |
1956 | ||
c906108c | 1957 | static void |
43f3e411 | 1958 | parse_procedure (PDR *pr, struct compunit_symtab *search_symtab, |
fba45db2 | 1959 | struct partial_symtab *pst) |
c906108c SS |
1960 | { |
1961 | struct symbol *s, *i; | |
3977b71f | 1962 | const struct block *b; |
c906108c SS |
1963 | char *sh_name; |
1964 | ||
025bb325 | 1965 | /* Simple rule to find files linked "-x". */ |
c906108c SS |
1966 | if (cur_fdr->rss == -1) |
1967 | { | |
1968 | if (pr->isym == -1) | |
1969 | { | |
025bb325 | 1970 | /* Static procedure at address pr->adr. Sigh. */ |
c906108c | 1971 | /* FIXME-32x64. assuming pr->adr fits in long. */ |
23136709 | 1972 | complaint (&symfile_complaints, |
e2e0b3e5 | 1973 | _("can't handle PDR for static proc at 0x%lx"), |
23136709 | 1974 | (unsigned long) pr->adr); |
c906108c SS |
1975 | return; |
1976 | } | |
1977 | else | |
1978 | { | |
1979 | /* external */ | |
1980 | EXTR she; | |
c5aa993b | 1981 | |
c906108c SS |
1982 | (*debug_swap->swap_ext_in) (cur_bfd, |
1983 | ((char *) debug_info->external_ext | |
1984 | + (pr->isym | |
1985 | * debug_swap->external_ext_size)), | |
1986 | &she); | |
1987 | sh_name = debug_info->ssext + she.asym.iss; | |
1988 | } | |
1989 | } | |
1990 | else | |
1991 | { | |
1992 | /* Full symbols */ | |
1993 | SYMR sh; | |
1994 | ||
1995 | (*debug_swap->swap_sym_in) (cur_bfd, | |
1996 | ((char *) debug_info->external_sym | |
1997 | + ((cur_fdr->isymBase + pr->isym) | |
1998 | * debug_swap->external_sym_size)), | |
1999 | &sh); | |
2000 | sh_name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
2001 | } | |
2002 | ||
2003 | if (search_symtab != NULL) | |
2004 | { | |
2005 | #if 0 | |
2006 | /* This loses both in the case mentioned (want a static, find a global), | |
c5aa993b JM |
2007 | but also if we are looking up a non-mangled name which happens to |
2008 | match the name of a mangled function. */ | |
c906108c | 2009 | /* We have to save the cur_fdr across the call to lookup_symbol. |
c5aa993b JM |
2010 | If the pdr is for a static function and if a global function with |
2011 | the same name exists, lookup_symbol will eventually read in the symtab | |
2012 | for the global function and clobber cur_fdr. */ | |
c906108c | 2013 | FDR *save_cur_fdr = cur_fdr; |
b8d56208 | 2014 | |
2570f2b7 | 2015 | s = lookup_symbol (sh_name, NULL, VAR_DOMAIN, 0); |
c906108c SS |
2016 | cur_fdr = save_cur_fdr; |
2017 | #else | |
2018 | s = mylookup_symbol | |
2019 | (sh_name, | |
43f3e411 DE |
2020 | BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (search_symtab), |
2021 | STATIC_BLOCK), | |
176620f1 | 2022 | VAR_DOMAIN, |
c906108c SS |
2023 | LOC_BLOCK); |
2024 | #endif | |
2025 | } | |
2026 | else | |
2027 | s = mylookup_symbol (sh_name, top_stack->cur_block, | |
176620f1 | 2028 | VAR_DOMAIN, LOC_BLOCK); |
c906108c SS |
2029 | |
2030 | if (s != 0) | |
2031 | { | |
2032 | b = SYMBOL_BLOCK_VALUE (s); | |
2033 | } | |
2034 | else | |
2035 | { | |
e2e0b3e5 | 2036 | complaint (&symfile_complaints, _("PDR for %s, but no symbol"), sh_name); |
c906108c SS |
2037 | #if 1 |
2038 | return; | |
2039 | #else | |
2040 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ | |
2041 | s = new_symbol (sh_name); | |
176620f1 | 2042 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
c906108c | 2043 | SYMBOL_CLASS (s) = LOC_BLOCK; |
025bb325 | 2044 | /* Donno its type, hope int is ok. */ |
0a9d309a | 2045 | SYMBOL_TYPE (s) |
46bf5051 | 2046 | = lookup_function_type (objfile_type (pst->objfile)->builtin_int); |
c7efd0b9 | 2047 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
025bb325 | 2048 | /* Won't have symbols for this one. */ |
c906108c SS |
2049 | b = new_block (2); |
2050 | SYMBOL_BLOCK_VALUE (s) = b; | |
2051 | BLOCK_FUNCTION (b) = s; | |
2052 | BLOCK_START (b) = pr->adr; | |
2053 | /* BOUND used to be the end of procedure's text, but the | |
c5aa993b | 2054 | argument is no longer passed in. */ |
c906108c SS |
2055 | BLOCK_END (b) = bound; |
2056 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
2057 | add_block (b, top_stack->cur_st); | |
2058 | #endif | |
2059 | } | |
2060 | ||
f92761ec | 2061 | i = mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME, b, LABEL_DOMAIN, LOC_CONST); |
c906108c SS |
2062 | |
2063 | if (i) | |
2064 | { | |
9918cab9 JB |
2065 | struct mdebug_extra_func_info *e; |
2066 | ||
2067 | e = (struct mdebug_extra_func_info *) SYMBOL_VALUE_BYTES (i); | |
c906108c | 2068 | e->pdr = *pr; |
c906108c SS |
2069 | |
2070 | /* GDB expects the absolute function start address for the | |
c5aa993b JM |
2071 | procedure descriptor in e->pdr.adr. |
2072 | As the address in the procedure descriptor is usually relative, | |
2073 | we would have to relocate e->pdr.adr with cur_fdr->adr and | |
b8fbeb18 | 2074 | ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)). |
c5aa993b JM |
2075 | Unfortunately cur_fdr->adr and e->pdr.adr are both absolute |
2076 | in shared libraries on some systems, and on other systems | |
2077 | e->pdr.adr is sometimes offset by a bogus value. | |
2078 | To work around these problems, we replace e->pdr.adr with | |
2079 | the start address of the function. */ | |
c906108c | 2080 | e->pdr.adr = BLOCK_START (b); |
c906108c SS |
2081 | } |
2082 | ||
2083 | /* It would be reasonable that functions that have been compiled | |
2084 | without debugging info have a btNil type for their return value, | |
2085 | and functions that are void and are compiled with debugging info | |
2086 | have btVoid. | |
2087 | gcc and DEC f77 put out btNil types for both cases, so btNil is mapped | |
2088 | to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info' | |
2089 | case right. | |
2090 | The glevel field in cur_fdr could be used to determine the presence | |
2091 | of debugging info, but GCC doesn't always pass the -g switch settings | |
2092 | to the assembler and GAS doesn't set the glevel field from the -g switch | |
2093 | settings. | |
2094 | To work around these problems, the return value type of a TYPE_CODE_VOID | |
2095 | function is adjusted accordingly if no debugging info was found in the | |
2096 | compilation unit. */ | |
c5aa993b | 2097 | |
c906108c SS |
2098 | if (processing_gcc_compilation == 0 |
2099 | && found_ecoff_debugging_info == 0 | |
2100 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID) | |
5c80ed9d | 2101 | SYMBOL_TYPE (s) = objfile_type (mdebugread_objfile)->nodebug_text_symbol; |
c906108c SS |
2102 | } |
2103 | ||
025bb325 | 2104 | /* Parse the external symbol ES. Just call parse_symbol() after |
c906108c SS |
2105 | making sure we know where the aux are for it. |
2106 | BIGEND says whether aux entries are big-endian or little-endian. | |
2107 | ||
025bb325 | 2108 | This routine clobbers top_stack->cur_block and ->cur_st. */ |
c906108c | 2109 | |
a14ed312 KB |
2110 | static void parse_external (EXTR *, int, struct section_offsets *, |
2111 | struct objfile *); | |
c906108c SS |
2112 | |
2113 | static void | |
fba45db2 KB |
2114 | parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets, |
2115 | struct objfile *objfile) | |
c906108c SS |
2116 | { |
2117 | union aux_ext *ax; | |
2118 | ||
2119 | if (es->ifd != ifdNil) | |
2120 | { | |
2121 | cur_fd = es->ifd; | |
2122 | cur_fdr = debug_info->fdr + cur_fd; | |
2123 | ax = debug_info->external_aux + cur_fdr->iauxBase; | |
2124 | } | |
2125 | else | |
2126 | { | |
2127 | cur_fdr = debug_info->fdr; | |
2128 | ax = 0; | |
2129 | } | |
2130 | ||
2131 | /* Reading .o files */ | |
c5aa993b | 2132 | if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil) |
c906108c SS |
2133 | { |
2134 | char *what; | |
2135 | switch (es->asym.st) | |
2136 | { | |
2137 | case stNil: | |
2138 | /* These are generated for static symbols in .o files, | |
2139 | ignore them. */ | |
2140 | return; | |
2141 | case stStaticProc: | |
2142 | case stProc: | |
2143 | what = "procedure"; | |
2144 | n_undef_procs++; | |
2145 | break; | |
2146 | case stGlobal: | |
2147 | what = "variable"; | |
2148 | n_undef_vars++; | |
2149 | break; | |
2150 | case stLabel: | |
2151 | what = "label"; | |
2152 | n_undef_labels++; | |
2153 | break; | |
2154 | default: | |
2155 | what = "symbol"; | |
2156 | break; | |
2157 | } | |
2158 | n_undef_symbols++; | |
025bb325 | 2159 | /* FIXME: Turn this into a complaint? */ |
c906108c | 2160 | if (info_verbose) |
a3f17187 | 2161 | printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"), |
c906108c SS |
2162 | what, debug_info->ssext + es->asym.iss, |
2163 | fdr_name (cur_fdr)); | |
2164 | return; | |
2165 | } | |
2166 | ||
2167 | switch (es->asym.st) | |
2168 | { | |
2169 | case stProc: | |
2170 | case stStaticProc: | |
2171 | /* There is no need to parse the external procedure symbols. | |
c5aa993b JM |
2172 | If they are from objects compiled without -g, their index will |
2173 | be indexNil, and the symbol definition from the minimal symbol | |
2174 | is preferrable (yielding a function returning int instead of int). | |
2175 | If the index points to a local procedure symbol, the local | |
2176 | symbol already provides the correct type. | |
2177 | Note that the index of the external procedure symbol points | |
2178 | to the local procedure symbol in the local symbol table, and | |
2179 | _not_ to the auxiliary symbol info. */ | |
c906108c SS |
2180 | break; |
2181 | case stGlobal: | |
2182 | case stLabel: | |
2183 | /* Global common symbols are resolved by the runtime loader, | |
c5aa993b JM |
2184 | ignore them. */ |
2185 | if (SC_IS_COMMON (es->asym.sc)) | |
c906108c SS |
2186 | break; |
2187 | ||
2188 | /* Note that the case of a symbol with indexNil must be handled | |
c5aa993b | 2189 | anyways by parse_symbol(). */ |
3e43a32a MS |
2190 | parse_symbol (&es->asym, ax, (char *) NULL, |
2191 | bigend, section_offsets, objfile); | |
c906108c SS |
2192 | break; |
2193 | default: | |
2194 | break; | |
2195 | } | |
2196 | } | |
2197 | ||
2198 | /* Parse the line number info for file descriptor FH into | |
2199 | GDB's linetable LT. MIPS' encoding requires a little bit | |
2200 | of magic to get things out. Note also that MIPS' line | |
2201 | numbers can go back and forth, apparently we can live | |
025bb325 | 2202 | with that and do not need to reorder our linetables. */ |
c906108c | 2203 | |
a14ed312 KB |
2204 | static void parse_lines (FDR *, PDR *, struct linetable *, int, |
2205 | struct partial_symtab *, CORE_ADDR); | |
c906108c SS |
2206 | |
2207 | static void | |
fba45db2 KB |
2208 | parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines, |
2209 | struct partial_symtab *pst, CORE_ADDR lowest_pdr_addr) | |
c906108c SS |
2210 | { |
2211 | unsigned char *base; | |
2212 | int j, k; | |
2213 | int delta, count, lineno = 0; | |
2214 | ||
2215 | if (fh->cbLine == 0) | |
2216 | return; | |
2217 | ||
025bb325 | 2218 | /* Scan by procedure descriptors. */ |
c906108c SS |
2219 | k = 0; |
2220 | for (j = 0; j < fh->cpd; j++, pr++) | |
2221 | { | |
2222 | CORE_ADDR l; | |
2223 | CORE_ADDR adr; | |
2224 | unsigned char *halt; | |
2225 | ||
025bb325 | 2226 | /* No code for this one. */ |
c906108c SS |
2227 | if (pr->iline == ilineNil || |
2228 | pr->lnLow == -1 || pr->lnHigh == -1) | |
2229 | continue; | |
2230 | ||
2231 | /* Determine start and end address of compressed line bytes for | |
c5aa993b | 2232 | this procedure. */ |
c906108c SS |
2233 | base = debug_info->line + fh->cbLineOffset; |
2234 | if (j != (fh->cpd - 1)) | |
c5aa993b | 2235 | halt = base + pr[1].cbLineOffset; |
c906108c | 2236 | else |
c5aa993b | 2237 | halt = base + fh->cbLine; |
c906108c SS |
2238 | base += pr->cbLineOffset; |
2239 | ||
5afc051b | 2240 | adr = pst->textlow + pr->adr - lowest_pdr_addr; |
c906108c SS |
2241 | |
2242 | l = adr >> 2; /* in words */ | |
c5aa993b | 2243 | for (lineno = pr->lnLow; base < halt;) |
c906108c SS |
2244 | { |
2245 | count = *base & 0x0f; | |
2246 | delta = *base++ >> 4; | |
2247 | if (delta >= 8) | |
2248 | delta -= 16; | |
2249 | if (delta == -8) | |
2250 | { | |
2251 | delta = (base[0] << 8) | base[1]; | |
2252 | if (delta >= 0x8000) | |
2253 | delta -= 0x10000; | |
2254 | base += 2; | |
2255 | } | |
2256 | lineno += delta; /* first delta is 0 */ | |
2257 | ||
025bb325 | 2258 | /* Complain if the line table overflows. Could happen |
c906108c SS |
2259 | with corrupt binaries. */ |
2260 | if (lt->nitems >= maxlines) | |
2261 | { | |
23136709 | 2262 | complaint (&symfile_complaints, |
e2e0b3e5 | 2263 | _("guessed size of linetable for %s incorrectly"), |
23136709 | 2264 | fdr_name (fh)); |
c906108c SS |
2265 | break; |
2266 | } | |
2267 | k = add_line (lt, lineno, l, k); | |
2268 | l += count + 1; | |
2269 | } | |
2270 | } | |
2271 | } | |
2272 | \f | |
23136709 KB |
2273 | static void |
2274 | function_outside_compilation_unit_complaint (const char *arg1) | |
2275 | { | |
2276 | complaint (&symfile_complaints, | |
3e43a32a MS |
2277 | _("function `%s' appears to be defined " |
2278 | "outside of all compilation units"), | |
23136709 KB |
2279 | arg1); |
2280 | } | |
2281 | ||
1f9872de JB |
2282 | /* Use the STORAGE_CLASS to compute which section the given symbol |
2283 | belongs to, and then records this new minimal symbol. */ | |
2284 | ||
2285 | static void | |
2286 | record_minimal_symbol (const char *name, const CORE_ADDR address, | |
2287 | enum minimal_symbol_type ms_type, int storage_class, | |
2288 | struct objfile *objfile) | |
2289 | { | |
2290 | int section; | |
1f9872de JB |
2291 | |
2292 | switch (storage_class) | |
2293 | { | |
2294 | case scText: | |
2295 | section = SECT_OFF_TEXT (objfile); | |
1f9872de JB |
2296 | break; |
2297 | case scData: | |
2298 | section = SECT_OFF_DATA (objfile); | |
1f9872de JB |
2299 | break; |
2300 | case scBss: | |
2301 | section = SECT_OFF_BSS (objfile); | |
1f9872de JB |
2302 | break; |
2303 | case scSData: | |
2304 | section = get_section_index (objfile, ".sdata"); | |
1f9872de JB |
2305 | break; |
2306 | case scSBss: | |
2307 | section = get_section_index (objfile, ".sbss"); | |
1f9872de JB |
2308 | break; |
2309 | case scRData: | |
2310 | section = get_section_index (objfile, ".rdata"); | |
1f9872de JB |
2311 | break; |
2312 | case scInit: | |
2313 | section = get_section_index (objfile, ".init"); | |
1f9872de JB |
2314 | break; |
2315 | case scXData: | |
2316 | section = get_section_index (objfile, ".xdata"); | |
1f9872de JB |
2317 | break; |
2318 | case scPData: | |
2319 | section = get_section_index (objfile, ".pdata"); | |
1f9872de JB |
2320 | break; |
2321 | case scFini: | |
2322 | section = get_section_index (objfile, ".fini"); | |
1f9872de JB |
2323 | break; |
2324 | case scRConst: | |
2325 | section = get_section_index (objfile, ".rconst"); | |
1f9872de JB |
2326 | break; |
2327 | #ifdef scTlsData | |
2328 | case scTlsData: | |
2329 | section = get_section_index (objfile, ".tlsdata"); | |
1f9872de JB |
2330 | break; |
2331 | #endif | |
2332 | #ifdef scTlsBss | |
2333 | case scTlsBss: | |
2334 | section = get_section_index (objfile, ".tlsbss"); | |
1f9872de JB |
2335 | break; |
2336 | #endif | |
2337 | default: | |
2338 | /* This kind of symbol is not associated to a section. */ | |
2339 | section = -1; | |
1f9872de JB |
2340 | } |
2341 | ||
b887350f | 2342 | prim_record_minimal_symbol_and_info (name, address, ms_type, |
e6dc44a8 | 2343 | section, objfile); |
1f9872de JB |
2344 | } |
2345 | ||
c906108c SS |
2346 | /* Master parsing procedure for first-pass reading of file symbols |
2347 | into a partial_symtab. */ | |
2348 | ||
2349 | static void | |
fba45db2 | 2350 | parse_partial_symbols (struct objfile *objfile) |
c906108c | 2351 | { |
5e2b427d | 2352 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
2353 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; |
2354 | const bfd_size_type external_rfd_size = debug_swap->external_rfd_size; | |
2355 | const bfd_size_type external_ext_size = debug_swap->external_ext_size; | |
12b9c64f AO |
2356 | void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in; |
2357 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; | |
2358 | void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in; | |
c906108c SS |
2359 | int f_idx, s_idx; |
2360 | HDRR *hdr = &debug_info->symbolic_header; | |
2361 | /* Running pointers */ | |
2362 | FDR *fh; | |
2363 | char *ext_out; | |
2364 | char *ext_out_end; | |
2365 | EXTR *ext_block; | |
52f0bd74 | 2366 | EXTR *ext_in; |
c906108c SS |
2367 | EXTR *ext_in_end; |
2368 | SYMR sh; | |
2369 | struct partial_symtab *pst; | |
2370 | int textlow_not_set = 1; | |
c906108c | 2371 | |
025bb325 | 2372 | /* List of current psymtab's include files. */ |
0d5cff50 | 2373 | const char **psymtab_include_list; |
c906108c SS |
2374 | int includes_allocated; |
2375 | int includes_used; | |
2376 | EXTR *extern_tab; | |
2377 | struct pst_map *fdr_to_pst; | |
025bb325 | 2378 | /* Index within current psymtab dependency list. */ |
c906108c SS |
2379 | struct partial_symtab **dependency_list; |
2380 | int dependencies_used, dependencies_allocated; | |
2381 | struct cleanup *old_chain; | |
2382 | char *name; | |
2383 | enum language prev_language; | |
2384 | asection *text_sect; | |
2385 | int relocatable = 0; | |
2386 | ||
2387 | /* Irix 5.2 shared libraries have a fh->adr field of zero, but | |
2388 | the shared libraries are prelinked at a high memory address. | |
2389 | We have to adjust the start address of the object file for this case, | |
2390 | by setting it to the start address of the first procedure in the file. | |
2391 | But we should do no adjustments if we are debugging a .o file, where | |
2392 | the text section (and fh->adr) really starts at zero. */ | |
2393 | text_sect = bfd_get_section_by_name (cur_bfd, ".text"); | |
2394 | if (text_sect != NULL | |
2395 | && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC)) | |
2396 | relocatable = 1; | |
2397 | ||
8b92e4d5 | 2398 | extern_tab = (EXTR *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2399 | sizeof (EXTR) * hdr->iextMax); |
2400 | ||
2401 | includes_allocated = 30; | |
2402 | includes_used = 0; | |
0d5cff50 DE |
2403 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2404 | sizeof (const char *)); | |
c906108c SS |
2405 | next_symbol_text_func = mdebug_next_symbol_text; |
2406 | ||
2407 | dependencies_allocated = 30; | |
2408 | dependencies_used = 0; | |
2409 | dependency_list = | |
2410 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2411 | sizeof (struct partial_symtab *)); | |
2412 | ||
46212e0b | 2413 | set_last_source_file (NULL); |
c906108c SS |
2414 | |
2415 | /* | |
2416 | * Big plan: | |
2417 | * | |
2418 | * Only parse the Local and External symbols, and the Relative FDR. | |
2419 | * Fixup enough of the loader symtab to be able to use it. | |
2420 | * Allocate space only for the file's portions we need to | |
025bb325 | 2421 | * look at. (XXX) |
c906108c SS |
2422 | */ |
2423 | ||
2424 | max_gdbinfo = 0; | |
2425 | max_glevel = MIN_GLEVEL; | |
2426 | ||
2427 | /* Allocate the map FDR -> PST. | |
2428 | Minor hack: -O3 images might claim some global data belongs | |
025bb325 | 2429 | to FDR -1. We`ll go along with that. */ |
8d749320 | 2430 | fdr_to_pst = XCNEWVEC (struct pst_map, hdr->ifdMax + 1); |
b8c9b27d | 2431 | old_chain = make_cleanup (xfree, fdr_to_pst); |
c906108c SS |
2432 | fdr_to_pst++; |
2433 | { | |
d4f3574e | 2434 | struct partial_symtab *pst = new_psymtab ("", objfile); |
b8d56208 | 2435 | |
c906108c SS |
2436 | fdr_to_pst[-1].pst = pst; |
2437 | FDR_IDX (pst) = -1; | |
2438 | } | |
2439 | ||
2440 | /* Allocate the global pending list. */ | |
2441 | pending_list = | |
2442 | ((struct mdebug_pending **) | |
8b92e4d5 | 2443 | obstack_alloc (&objfile->objfile_obstack, |
c906108c | 2444 | hdr->ifdMax * sizeof (struct mdebug_pending *))); |
12b9c64f | 2445 | memset (pending_list, 0, |
c906108c SS |
2446 | hdr->ifdMax * sizeof (struct mdebug_pending *)); |
2447 | ||
2448 | /* Pass 0 over external syms: swap them in. */ | |
8d749320 | 2449 | ext_block = XNEWVEC (EXTR, hdr->iextMax); |
b8c9b27d | 2450 | make_cleanup (xfree, ext_block); |
c906108c SS |
2451 | |
2452 | ext_out = (char *) debug_info->external_ext; | |
2453 | ext_out_end = ext_out + hdr->iextMax * external_ext_size; | |
2454 | ext_in = ext_block; | |
2455 | for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) | |
2456 | (*swap_ext_in) (cur_bfd, ext_out, ext_in); | |
2457 | ||
025bb325 | 2458 | /* Pass 1 over external syms: Presize and partition the list. */ |
c906108c SS |
2459 | ext_in = ext_block; |
2460 | ext_in_end = ext_in + hdr->iextMax; | |
2461 | for (; ext_in < ext_in_end; ext_in++) | |
2462 | { | |
2463 | /* See calls to complain below. */ | |
2464 | if (ext_in->ifd >= -1 | |
2465 | && ext_in->ifd < hdr->ifdMax | |
2466 | && ext_in->asym.iss >= 0 | |
2467 | && ext_in->asym.iss < hdr->issExtMax) | |
2468 | fdr_to_pst[ext_in->ifd].n_globals++; | |
2469 | } | |
2470 | ||
025bb325 | 2471 | /* Pass 1.5 over files: partition out global symbol space. */ |
c906108c SS |
2472 | s_idx = 0; |
2473 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) | |
2474 | { | |
2475 | fdr_to_pst[f_idx].globals_offset = s_idx; | |
2476 | s_idx += fdr_to_pst[f_idx].n_globals; | |
2477 | fdr_to_pst[f_idx].n_globals = 0; | |
2478 | } | |
2479 | ||
2480 | /* ECOFF in ELF: | |
2481 | ||
2482 | For ECOFF in ELF, we skip the creation of the minimal symbols. | |
2483 | The ECOFF symbols should be a subset of the Elf symbols, and the | |
2484 | section information of the elf symbols will be more accurate. | |
2485 | FIXME! What about Irix 5's native linker? | |
2486 | ||
2487 | By default, Elf sections which don't exist in ECOFF | |
2488 | get put in ECOFF's absolute section by the gnu linker. | |
2489 | Since absolute sections don't get relocated, we | |
2490 | end up calculating an address different from that of | |
2491 | the symbol's minimal symbol (created earlier from the | |
025bb325 | 2492 | Elf symtab). |
c906108c SS |
2493 | |
2494 | To fix this, either : | |
2495 | 1) don't create the duplicate symbol | |
c5aa993b JM |
2496 | (assumes ECOFF symtab is a subset of the ELF symtab; |
2497 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2498 | 2) create it, only if lookup for existing symbol in ELF's minimal |
c5aa993b JM |
2499 | symbols fails |
2500 | (inefficient; | |
2501 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2502 | 3) create it, but lookup ELF's minimal symbol and use it's section |
c5aa993b JM |
2503 | during relocation, then modify "uniqify" phase to merge and |
2504 | eliminate the duplicate symbol | |
2505 | (highly inefficient) | |
c906108c SS |
2506 | |
2507 | I've implemented #1 here... | |
2508 | Skip the creation of the minimal symbols based on the ECOFF | |
025bb325 | 2509 | symbol table. */ |
c906108c | 2510 | |
025bb325 | 2511 | /* Pass 2 over external syms: fill in external symbols. */ |
c5aa993b JM |
2512 | ext_in = ext_block; |
2513 | ext_in_end = ext_in + hdr->iextMax; | |
2514 | for (; ext_in < ext_in_end; ext_in++) | |
2515 | { | |
2516 | enum minimal_symbol_type ms_type = mst_text; | |
2517 | CORE_ADDR svalue = ext_in->asym.value; | |
c906108c | 2518 | |
c5aa993b JM |
2519 | /* The Irix 5 native tools seem to sometimes generate bogus |
2520 | external symbols. */ | |
2521 | if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax) | |
2522 | { | |
23136709 | 2523 | complaint (&symfile_complaints, |
3e43a32a MS |
2524 | _("bad ifd for external symbol: %d (max %ld)"), |
2525 | ext_in->ifd, hdr->ifdMax); | |
c5aa993b JM |
2526 | continue; |
2527 | } | |
2528 | if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax) | |
2529 | { | |
23136709 | 2530 | complaint (&symfile_complaints, |
e2e0b3e5 | 2531 | _("bad iss for external symbol: %ld (max %ld)"), |
23136709 | 2532 | ext_in->asym.iss, hdr->issExtMax); |
c5aa993b JM |
2533 | continue; |
2534 | } | |
c906108c | 2535 | |
c5aa993b JM |
2536 | extern_tab[fdr_to_pst[ext_in->ifd].globals_offset |
2537 | + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; | |
c906108c SS |
2538 | |
2539 | ||
c5aa993b JM |
2540 | if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil) |
2541 | continue; | |
c906108c | 2542 | |
c906108c | 2543 | |
025bb325 | 2544 | /* Pass 3 over files, over local syms: fill in static symbols. */ |
c5aa993b JM |
2545 | name = debug_info->ssext + ext_in->asym.iss; |
2546 | ||
025bb325 | 2547 | /* Process ECOFF Symbol Types and Storage Classes. */ |
c5aa993b JM |
2548 | switch (ext_in->asym.st) |
2549 | { | |
2550 | case stProc: | |
2551 | /* Beginnning of Procedure */ | |
c5aa993b JM |
2552 | break; |
2553 | case stStaticProc: | |
2554 | /* Load time only static procs */ | |
2555 | ms_type = mst_file_text; | |
c5aa993b JM |
2556 | break; |
2557 | case stGlobal: | |
2558 | /* External symbol */ | |
2559 | if (SC_IS_COMMON (ext_in->asym.sc)) | |
2560 | { | |
2561 | /* The value of a common symbol is its size, not its address. | |
2562 | Ignore it. */ | |
c906108c | 2563 | continue; |
c5aa993b JM |
2564 | } |
2565 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2566 | { | |
2567 | ms_type = mst_data; | |
c5aa993b JM |
2568 | } |
2569 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2570 | { | |
2571 | ms_type = mst_bss; | |
c5aa993b | 2572 | } |
0e931cf0 JB |
2573 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2574 | { | |
2575 | ms_type = mst_bss; | |
0e931cf0 | 2576 | } |
c5aa993b JM |
2577 | else |
2578 | ms_type = mst_abs; | |
2579 | break; | |
2580 | case stLabel: | |
2581 | /* Label */ | |
0e931cf0 JB |
2582 | |
2583 | /* On certain platforms, some extra label symbols can be | |
025bb325 | 2584 | generated by the linker. One possible usage for this kind |
0e931cf0 | 2585 | of symbols is to represent the address of the begining of a |
025bb325 | 2586 | given section. For instance, on Tru64 5.1, the address of |
0e931cf0 JB |
2587 | the _ftext label is the start address of the .text section. |
2588 | ||
2589 | The storage class of these symbols is usually directly | |
025bb325 | 2590 | related to the section to which the symbol refers. For |
0e931cf0 JB |
2591 | instance, on Tru64 5.1, the storage class for the _fdata |
2592 | label is scData, refering to the .data section. | |
2593 | ||
2594 | It is actually possible that the section associated to the | |
025bb325 | 2595 | storage class of the label does not exist. On True64 5.1 |
0e931cf0 JB |
2596 | for instance, the libm.so shared library does not contain |
2597 | any .data section, although it contains a _fpdata label | |
025bb325 | 2598 | which storage class is scData... Since these symbols are |
0e931cf0 | 2599 | usually useless for the debugger user anyway, we just |
025bb325 | 2600 | discard these symbols. */ |
0e931cf0 | 2601 | |
c5aa993b JM |
2602 | if (SC_IS_TEXT (ext_in->asym.sc)) |
2603 | { | |
0e931cf0 JB |
2604 | if (objfile->sect_index_text == -1) |
2605 | continue; | |
2606 | ||
c5aa993b | 2607 | ms_type = mst_file_text; |
c5aa993b JM |
2608 | } |
2609 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2610 | { | |
0e931cf0 JB |
2611 | if (objfile->sect_index_data == -1) |
2612 | continue; | |
2613 | ||
c5aa993b | 2614 | ms_type = mst_file_data; |
c5aa993b JM |
2615 | } |
2616 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2617 | { | |
0e931cf0 JB |
2618 | if (objfile->sect_index_bss == -1) |
2619 | continue; | |
2620 | ||
c5aa993b | 2621 | ms_type = mst_file_bss; |
c5aa993b | 2622 | } |
0e931cf0 JB |
2623 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2624 | { | |
2625 | const int sbss_sect_index = get_section_index (objfile, ".sbss"); | |
2626 | ||
2627 | if (sbss_sect_index == -1) | |
2628 | continue; | |
2629 | ||
2630 | ms_type = mst_file_bss; | |
0e931cf0 | 2631 | } |
c5aa993b JM |
2632 | else |
2633 | ms_type = mst_abs; | |
2634 | break; | |
2635 | case stLocal: | |
2636 | case stNil: | |
2637 | /* The alpha has the section start addresses in stLocal symbols | |
025bb325 | 2638 | whose name starts with a `.'. Skip those but complain for all |
c5aa993b JM |
2639 | other stLocal symbols. |
2640 | Irix6 puts the section start addresses in stNil symbols, skip | |
025bb325 | 2641 | those too. */ |
c5aa993b JM |
2642 | if (name[0] == '.') |
2643 | continue; | |
2644 | /* Fall through. */ | |
2645 | default: | |
2646 | ms_type = mst_unknown; | |
23136709 | 2647 | unknown_ext_complaint (name); |
c5aa993b JM |
2648 | } |
2649 | if (!ECOFF_IN_ELF (cur_bfd)) | |
1f9872de JB |
2650 | record_minimal_symbol (name, svalue, ms_type, ext_in->asym.sc, |
2651 | objfile); | |
c5aa993b | 2652 | } |
c906108c | 2653 | |
025bb325 | 2654 | /* Pass 3 over files, over local syms: fill in static symbols. */ |
c906108c SS |
2655 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) |
2656 | { | |
2657 | struct partial_symtab *save_pst; | |
2658 | EXTR *ext_ptr; | |
2659 | CORE_ADDR textlow; | |
2660 | ||
2661 | cur_fdr = fh = debug_info->fdr + f_idx; | |
2662 | ||
2663 | if (fh->csym == 0) | |
2664 | { | |
2665 | fdr_to_pst[f_idx].pst = NULL; | |
2666 | continue; | |
2667 | } | |
2668 | ||
2669 | /* Determine the start address for this object file from the | |
c5aa993b | 2670 | file header and relocate it, except for Irix 5.2 zero fh->adr. */ |
c906108c SS |
2671 | if (fh->cpd) |
2672 | { | |
2673 | textlow = fh->adr; | |
2674 | if (relocatable || textlow != 0) | |
3e43a32a MS |
2675 | textlow += ANOFFSET (objfile->section_offsets, |
2676 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2677 | } |
2678 | else | |
2679 | textlow = 0; | |
18a94d75 | 2680 | pst = start_psymtab_common (objfile, |
c906108c SS |
2681 | fdr_name (fh), |
2682 | textlow, | |
2683 | objfile->global_psymbols.next, | |
2684 | objfile->static_psymbols.next); | |
e38df1d0 TT |
2685 | pst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2686 | sizeof (struct symloc)); | |
12b9c64f | 2687 | memset (pst->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
2688 | |
2689 | save_pst = pst; | |
2690 | FDR_IDX (pst) = f_idx; | |
2691 | CUR_BFD (pst) = cur_bfd; | |
2692 | DEBUG_SWAP (pst) = debug_swap; | |
2693 | DEBUG_INFO (pst) = debug_info; | |
2694 | PENDING_LIST (pst) = pending_list; | |
2695 | ||
025bb325 | 2696 | /* The way to turn this into a symtab is to call... */ |
257e7a09 | 2697 | pst->read_symtab = mdebug_read_symtab; |
c906108c SS |
2698 | |
2699 | /* Set up language for the pst. | |
2700 | The language from the FDR is used if it is unambigious (e.g. cfront | |
c5aa993b JM |
2701 | with native cc and g++ will set the language to C). |
2702 | Otherwise we have to deduce the language from the filename. | |
2703 | Native ecoff has every header file in a separate FDR, so | |
2704 | deduce_language_from_filename will return language_unknown for | |
2705 | a header file, which is not what we want. | |
2706 | But the FDRs for the header files are after the FDR for the source | |
2707 | file, so we can assign the language of the source file to the | |
025bb325 | 2708 | following header files. Then we save the language in the private |
c5aa993b | 2709 | pst data so that we can reuse it when building symtabs. */ |
c906108c SS |
2710 | prev_language = psymtab_language; |
2711 | ||
2712 | switch (fh->lang) | |
2713 | { | |
2714 | case langCplusplusV2: | |
2715 | psymtab_language = language_cplus; | |
2716 | break; | |
2717 | default: | |
2718 | psymtab_language = deduce_language_from_filename (fdr_name (fh)); | |
2719 | break; | |
2720 | } | |
2721 | if (psymtab_language == language_unknown) | |
2722 | psymtab_language = prev_language; | |
2723 | PST_PRIVATE (pst)->pst_language = psymtab_language; | |
2724 | ||
5afc051b | 2725 | pst->texthigh = pst->textlow; |
c906108c SS |
2726 | |
2727 | /* For stabs-in-ecoff files, the second symbol must be @stab. | |
c5aa993b JM |
2728 | This symbol is emitted by mips-tfile to signal that the |
2729 | current object file uses encapsulated stabs instead of mips | |
2730 | ecoff for local symbols. (It is the second symbol because | |
2731 | the first symbol is the stFile used to signal the start of a | |
025bb325 | 2732 | file). */ |
c906108c SS |
2733 | processing_gcc_compilation = 0; |
2734 | if (fh->csym >= 2) | |
2735 | { | |
2736 | (*swap_sym_in) (cur_bfd, | |
2737 | ((char *) debug_info->external_sym | |
2738 | + (fh->isymBase + 1) * external_sym_size), | |
2739 | &sh); | |
ee300cd4 AC |
2740 | if (strcmp (debug_info->ss + fh->issBase + sh.iss, |
2741 | stabs_symbol) == 0) | |
c906108c SS |
2742 | processing_gcc_compilation = 2; |
2743 | } | |
2744 | ||
2745 | if (processing_gcc_compilation != 0) | |
2746 | { | |
2747 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
2748 | { | |
2749 | int type_code; | |
0d5cff50 | 2750 | const char *namestring; |
c906108c SS |
2751 | |
2752 | (*swap_sym_in) (cur_bfd, | |
2753 | (((char *) debug_info->external_sym) | |
c5aa993b | 2754 | + (fh->isymBase + cur_sdx) * external_sym_size), |
c906108c SS |
2755 | &sh); |
2756 | type_code = ECOFF_UNMARK_STAB (sh.index); | |
2757 | if (!ECOFF_IS_STAB (&sh)) | |
2758 | { | |
2759 | if (sh.st == stProc || sh.st == stStaticProc) | |
2760 | { | |
2761 | CORE_ADDR procaddr; | |
2762 | long isym; | |
c5aa993b | 2763 | |
c906108c SS |
2764 | if (sh.st == stStaticProc) |
2765 | { | |
2766 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
1f9872de JB |
2767 | record_minimal_symbol (namestring, sh.value, |
2768 | mst_file_text, sh.sc, | |
2769 | objfile); | |
c906108c | 2770 | } |
2273f0ac TT |
2771 | sh.value += ANOFFSET (objfile->section_offsets, |
2772 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2773 | procaddr = sh.value; |
2774 | ||
2775 | isym = AUX_GET_ISYM (fh->fBigendian, | |
2776 | (debug_info->external_aux | |
2777 | + fh->iauxBase | |
2778 | + sh.index)); | |
2779 | (*swap_sym_in) (cur_bfd, | |
2780 | ((char *) debug_info->external_sym | |
2781 | + ((fh->isymBase + isym - 1) | |
2782 | * external_sym_size)), | |
2783 | &sh); | |
2784 | if (sh.st == stEnd) | |
2785 | { | |
2786 | CORE_ADDR high = procaddr + sh.value; | |
2787 | ||
c5aa993b | 2788 | /* Kludge for Irix 5.2 zero fh->adr. */ |
c906108c | 2789 | if (!relocatable |
5afc051b JB |
2790 | && (pst->textlow == 0 || procaddr < pst->textlow)) |
2791 | pst->textlow = procaddr; | |
2792 | if (high > pst->texthigh) | |
2793 | pst->texthigh = high; | |
c906108c SS |
2794 | } |
2795 | } | |
2796 | else if (sh.st == stStatic) | |
2797 | { | |
2798 | switch (sh.sc) | |
2799 | { | |
2800 | case scUndefined: | |
2801 | case scSUndefined: | |
2802 | case scNil: | |
2803 | case scAbs: | |
2804 | break; | |
2805 | ||
2806 | case scData: | |
2807 | case scSData: | |
2808 | case scRData: | |
2809 | case scPData: | |
2810 | case scXData: | |
2811 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
1f9872de JB |
2812 | record_minimal_symbol (namestring, sh.value, |
2813 | mst_file_data, sh.sc, | |
2814 | objfile); | |
2273f0ac TT |
2815 | sh.value += ANOFFSET (objfile->section_offsets, |
2816 | SECT_OFF_DATA (objfile)); | |
c906108c SS |
2817 | break; |
2818 | ||
2819 | default: | |
2820 | /* FIXME! Shouldn't this use cases for bss, | |
025bb325 | 2821 | then have the default be abs? */ |
c906108c | 2822 | namestring = debug_info->ss + fh->issBase + sh.iss; |
1f9872de JB |
2823 | record_minimal_symbol (namestring, sh.value, |
2824 | mst_file_bss, sh.sc, | |
2825 | objfile); | |
2273f0ac TT |
2826 | sh.value += ANOFFSET (objfile->section_offsets, |
2827 | SECT_OFF_BSS (objfile)); | |
c906108c SS |
2828 | break; |
2829 | } | |
2830 | } | |
2831 | continue; | |
2832 | } | |
025bb325 | 2833 | /* Handle stabs continuation. */ |
c906108c SS |
2834 | { |
2835 | char *stabstring = debug_info->ss + fh->issBase + sh.iss; | |
2836 | int len = strlen (stabstring); | |
b8d56208 | 2837 | |
c5aa993b | 2838 | while (stabstring[len - 1] == '\\') |
c906108c SS |
2839 | { |
2840 | SYMR sh2; | |
2841 | char *stabstring1 = stabstring; | |
2842 | char *stabstring2; | |
2843 | int len2; | |
2844 | ||
025bb325 | 2845 | /* Ignore continuation char from 1st string. */ |
c906108c SS |
2846 | len--; |
2847 | ||
025bb325 | 2848 | /* Read next stabstring. */ |
c906108c SS |
2849 | cur_sdx++; |
2850 | (*swap_sym_in) (cur_bfd, | |
2851 | (((char *) debug_info->external_sym) | |
c5aa993b | 2852 | + (fh->isymBase + cur_sdx) |
c906108c SS |
2853 | * external_sym_size), |
2854 | &sh2); | |
2855 | stabstring2 = debug_info->ss + fh->issBase + sh2.iss; | |
2856 | len2 = strlen (stabstring2); | |
2857 | ||
025bb325 | 2858 | /* Concatinate stabstring2 with stabstring1. */ |
c906108c | 2859 | if (stabstring |
c5aa993b | 2860 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
224c3ddb SM |
2861 | stabstring |
2862 | = (char *) xrealloc (stabstring, len + len2 + 1); | |
c906108c | 2863 | else |
86f902e0 | 2864 | { |
224c3ddb | 2865 | stabstring = (char *) xmalloc (len + len2 + 1); |
86f902e0 FF |
2866 | strcpy (stabstring, stabstring1); |
2867 | } | |
c906108c SS |
2868 | strcpy (stabstring + len, stabstring2); |
2869 | len += len2; | |
2870 | } | |
2871 | ||
d3119d1e EZ |
2872 | switch (type_code) |
2873 | { | |
d3119d1e | 2874 | char *p; |
b8d56208 | 2875 | |
3e43a32a | 2876 | /* Standard, external, non-debugger, symbols. */ |
d3119d1e EZ |
2877 | |
2878 | case N_TEXT | N_EXT: | |
2879 | case N_NBTEXT | N_EXT: | |
3e43a32a MS |
2880 | sh.value += ANOFFSET (objfile->section_offsets, |
2881 | SECT_OFF_TEXT (objfile)); | |
d3119d1e EZ |
2882 | goto record_it; |
2883 | ||
2884 | case N_DATA | N_EXT: | |
2885 | case N_NBDATA | N_EXT: | |
3e43a32a MS |
2886 | sh.value += ANOFFSET (objfile->section_offsets, |
2887 | SECT_OFF_DATA (objfile)); | |
d3119d1e EZ |
2888 | goto record_it; |
2889 | ||
2890 | case N_BSS: | |
2891 | case N_BSS | N_EXT: | |
2892 | case N_NBBSS | N_EXT: | |
025bb325 | 2893 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ |
3e43a32a MS |
2894 | sh.value += ANOFFSET (objfile->section_offsets, |
2895 | SECT_OFF_BSS (objfile)); | |
d3119d1e EZ |
2896 | goto record_it; |
2897 | ||
2898 | case N_ABS | N_EXT: | |
2899 | record_it: | |
b98bd911 | 2900 | continue; |
d3119d1e | 2901 | |
025bb325 | 2902 | /* Standard, local, non-debugger, symbols. */ |
d3119d1e EZ |
2903 | |
2904 | case N_NBTEXT: | |
2905 | ||
3e43a32a MS |
2906 | /* We need to be able to deal with both N_FN or |
2907 | N_TEXT, because we have no way of knowing | |
2908 | whether the sys-supplied ld or GNU ld was used | |
2909 | to make the executable. Sequents throw in | |
2910 | another wrinkle -- they renumbered N_FN. */ | |
d3119d1e EZ |
2911 | |
2912 | case N_FN: | |
2913 | case N_FN_SEQ: | |
2914 | case N_TEXT: | |
2915 | continue; | |
2916 | ||
2917 | case N_DATA: | |
3e43a32a MS |
2918 | sh.value += ANOFFSET (objfile->section_offsets, |
2919 | SECT_OFF_DATA (objfile)); | |
d3119d1e EZ |
2920 | goto record_it; |
2921 | ||
2922 | case N_UNDF | N_EXT: | |
025bb325 | 2923 | continue; /* Just undefined, not COMMON. */ |
d3119d1e EZ |
2924 | |
2925 | case N_UNDF: | |
2926 | continue; | |
2927 | ||
2928 | /* Lots of symbol types we can just ignore. */ | |
2929 | ||
2930 | case N_ABS: | |
2931 | case N_NBDATA: | |
2932 | case N_NBBSS: | |
2933 | continue; | |
2934 | ||
025bb325 | 2935 | /* Keep going . . . */ |
d3119d1e EZ |
2936 | |
2937 | /* | |
2938 | * Special symbol types for GNU | |
2939 | */ | |
2940 | case N_INDR: | |
2941 | case N_INDR | N_EXT: | |
2942 | case N_SETA: | |
2943 | case N_SETA | N_EXT: | |
2944 | case N_SETT: | |
2945 | case N_SETT | N_EXT: | |
2946 | case N_SETD: | |
2947 | case N_SETD | N_EXT: | |
2948 | case N_SETB: | |
2949 | case N_SETB | N_EXT: | |
2950 | case N_SETV: | |
2951 | continue; | |
2952 | ||
2953 | /* | |
2954 | * Debugger symbols | |
2955 | */ | |
2956 | ||
2957 | case N_SO: | |
2958 | { | |
d3119d1e | 2959 | static int prev_so_symnum = -10; |
0ba1096a | 2960 | const char *p; |
d3119d1e | 2961 | |
3e43a32a | 2962 | /* A zero value is probably an indication for the |
8763cede | 2963 | SunPRO 3.0 compiler. dbx_end_psymtab explicitly tests |
3e43a32a | 2964 | for zero, so don't relocate it. */ |
d3119d1e | 2965 | |
203c3895 | 2966 | if (sh.value == 0 |
5e2b427d | 2967 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
78cc6c2d | 2968 | textlow_not_set = 1; |
d3119d1e EZ |
2969 | else |
2970 | textlow_not_set = 0; | |
203c3895 | 2971 | |
d3119d1e | 2972 | if (prev_so_symnum != symnum - 1) |
025bb325 | 2973 | { /* Here if prev stab wasn't N_SO. */ |
d3119d1e EZ |
2974 | if (pst) |
2975 | { | |
2976 | pst = (struct partial_symtab *) 0; | |
2977 | includes_used = 0; | |
2978 | dependencies_used = 0; | |
2979 | } | |
2980 | } | |
2981 | ||
2982 | prev_so_symnum = symnum; | |
c906108c | 2983 | |
025bb325 MS |
2984 | /* End the current partial symtab and start a |
2985 | new one. */ | |
d3119d1e EZ |
2986 | |
2987 | /* SET_NAMESTRING ();*/ | |
2988 | namestring = stabstring; | |
2989 | ||
3e43a32a | 2990 | /* Null name means end of .o file. Don't start a new |
025bb325 | 2991 | one. */ |
d3119d1e EZ |
2992 | if (*namestring == '\000') |
2993 | continue; | |
2994 | ||
3e43a32a MS |
2995 | /* Some compilers (including gcc) emit a pair of |
2996 | initial N_SOs. The first one is a directory name; | |
2997 | the second the file name. If pst exists, is | |
2998 | empty, and has a filename ending in '/', we assume | |
025bb325 | 2999 | the previous N_SO was a directory name. */ |
0ba1096a KT |
3000 | p = lbasename (namestring); |
3001 | if (p != namestring && *p == '\000') | |
3e43a32a | 3002 | continue; /* Simply ignore directory |
025bb325 | 3003 | name SOs. */ |
d3119d1e | 3004 | |
3e43a32a MS |
3005 | /* Some other compilers (C++ ones in particular) emit |
3006 | useless SOs for non-existant .c files. We ignore | |
3007 | all subsequent SOs that immediately follow the | |
3008 | first. */ | |
d3119d1e EZ |
3009 | |
3010 | if (!pst) | |
3011 | pst = save_pst; | |
3012 | continue; | |
3013 | } | |
3014 | ||
3015 | case N_BINCL: | |
3016 | continue; | |
3017 | ||
3018 | case N_SOL: | |
3019 | { | |
3020 | enum language tmp_language; | |
b8d56208 | 3021 | |
025bb325 | 3022 | /* Mark down an include file in the current psymtab. */ |
d3119d1e | 3023 | |
025bb325 | 3024 | /* SET_NAMESTRING (); */ |
d3119d1e EZ |
3025 | namestring = stabstring; |
3026 | ||
3e43a32a MS |
3027 | tmp_language |
3028 | = deduce_language_from_filename (namestring); | |
d3119d1e | 3029 | |
3e43a32a MS |
3030 | /* Only change the psymtab's language if we've |
3031 | learned something useful (eg. tmp_language is not | |
3032 | language_unknown). In addition, to match what | |
3033 | start_subfile does, never change from C++ to | |
3034 | C. */ | |
d3119d1e EZ |
3035 | if (tmp_language != language_unknown |
3036 | && (tmp_language != language_c | |
3037 | || psymtab_language != language_cplus)) | |
3038 | psymtab_language = tmp_language; | |
3039 | ||
3e43a32a MS |
3040 | /* In C++, one may expect the same filename to come |
3041 | round many times, when code is coming alternately | |
3042 | from the main file and from inline functions in | |
025bb325 | 3043 | other files. So I check to see if this is a file |
3e43a32a MS |
3044 | we've seen before -- either the main source file, |
3045 | or a previously included file. | |
3046 | ||
3047 | This seems to be a lot of time to be spending on | |
3048 | N_SOL, but things like "break c-exp.y:435" need to | |
3049 | work (I suppose the psymtab_include_list could be | |
3050 | hashed or put in a binary tree, if profiling shows | |
3051 | this is a major hog). */ | |
0ba1096a | 3052 | if (pst && filename_cmp (namestring, pst->filename) == 0) |
d3119d1e | 3053 | continue; |
b8d56208 | 3054 | |
d3119d1e | 3055 | { |
aa1ee363 | 3056 | int i; |
b8d56208 | 3057 | |
d3119d1e | 3058 | for (i = 0; i < includes_used; i++) |
0ba1096a KT |
3059 | if (filename_cmp (namestring, |
3060 | psymtab_include_list[i]) == 0) | |
d3119d1e EZ |
3061 | { |
3062 | i = -1; | |
3063 | break; | |
3064 | } | |
3065 | if (i == -1) | |
3066 | continue; | |
3067 | } | |
3068 | ||
3069 | psymtab_include_list[includes_used++] = namestring; | |
3070 | if (includes_used >= includes_allocated) | |
3071 | { | |
0d5cff50 | 3072 | const char **orig = psymtab_include_list; |
d3119d1e | 3073 | |
0d5cff50 | 3074 | psymtab_include_list = (const char **) |
d3119d1e | 3075 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 3076 | sizeof (const char *)); |
4efb68b1 | 3077 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 3078 | includes_used * sizeof (const char *)); |
d3119d1e EZ |
3079 | } |
3080 | continue; | |
3081 | } | |
025bb325 | 3082 | case N_LSYM: /* Typedef or automatic variable. */ |
3e43a32a MS |
3083 | case N_STSYM: /* Data seg var -- static */ |
3084 | case N_LCSYM: /* BSS " */ | |
3085 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
3086 | case N_NBSTS: /* Gould nobase. */ | |
3087 | case N_NBLCS: /* symbols. */ | |
d3119d1e | 3088 | case N_FUN: |
3e43a32a MS |
3089 | case N_GSYM: /* Global (extern) variable; can be |
3090 | data or bss (sigh FIXME). */ | |
d3119d1e EZ |
3091 | |
3092 | /* Following may probably be ignored; I'll leave them here | |
3093 | for now (until I do Pascal and Modula 2 extensions). */ | |
3094 | ||
3e43a32a MS |
3095 | case N_PC: /* I may or may not need this; I |
3096 | suspect not. */ | |
3097 | case N_M2C: /* I suspect that I can ignore this | |
025bb325 MS |
3098 | here. */ |
3099 | case N_SCOPE: /* Same. */ | |
d3119d1e | 3100 | |
025bb325 | 3101 | /* SET_NAMESTRING (); */ |
d3119d1e EZ |
3102 | namestring = stabstring; |
3103 | p = (char *) strchr (namestring, ':'); | |
3104 | if (!p) | |
025bb325 | 3105 | continue; /* Not a debugging symbol. */ |
d3119d1e EZ |
3106 | |
3107 | ||
3108 | ||
3109 | /* Main processing section for debugging symbols which | |
3e43a32a MS |
3110 | the initial read through the symbol tables needs to |
3111 | worry about. If we reach this point, the symbol | |
3112 | which we are considering is definitely one we are | |
3113 | interested in. p must also contain the (valid) | |
3114 | index into the namestring which indicates the | |
3115 | debugging type symbol. */ | |
d3119d1e EZ |
3116 | |
3117 | switch (p[1]) | |
3118 | { | |
3119 | case 'S': | |
3e43a32a MS |
3120 | sh.value += ANOFFSET (objfile->section_offsets, |
3121 | SECT_OFF_DATA (objfile)); | |
149ad273 | 3122 | |
5e2b427d | 3123 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 3124 | namestring = gdbarch_static_transform_name |
5e2b427d | 3125 | (gdbarch, namestring); |
149ad273 | 3126 | |
04a679b8 | 3127 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3128 | VAR_DOMAIN, LOC_STATIC, |
d3119d1e | 3129 | &objfile->static_psymbols, |
1762568f | 3130 | sh.value, |
d3119d1e EZ |
3131 | psymtab_language, objfile); |
3132 | continue; | |
3133 | case 'G': | |
3e43a32a MS |
3134 | sh.value += ANOFFSET (objfile->section_offsets, |
3135 | SECT_OFF_DATA (objfile)); | |
025bb325 MS |
3136 | /* The addresses in these entries are reported |
3137 | to be wrong. See the code that reads 'G's | |
3138 | for symtabs. */ | |
04a679b8 | 3139 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3140 | VAR_DOMAIN, LOC_STATIC, |
d3119d1e | 3141 | &objfile->global_psymbols, |
1762568f | 3142 | sh.value, |
d3119d1e EZ |
3143 | psymtab_language, objfile); |
3144 | continue; | |
3145 | ||
3146 | case 'T': | |
3147 | /* When a 'T' entry is defining an anonymous enum, it | |
3148 | may have a name which is the empty string, or a | |
3149 | single space. Since they're not really defining a | |
3150 | symbol, those shouldn't go in the partial symbol | |
3151 | table. We do pick up the elements of such enums at | |
3152 | 'check_enum:', below. */ | |
3153 | if (p >= namestring + 2 | |
3154 | || (p == namestring + 1 | |
3155 | && namestring[0] != ' ')) | |
3156 | { | |
04a679b8 | 3157 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3158 | STRUCT_DOMAIN, LOC_TYPEDEF, |
d3119d1e | 3159 | &objfile->static_psymbols, |
1762568f | 3160 | 0, psymtab_language, objfile); |
d3119d1e EZ |
3161 | if (p[2] == 't') |
3162 | { | |
3163 | /* Also a typedef with the same name. */ | |
3e43a32a MS |
3164 | add_psymbol_to_list (namestring, |
3165 | p - namestring, 1, | |
176620f1 | 3166 | VAR_DOMAIN, LOC_TYPEDEF, |
d3119d1e | 3167 | &objfile->static_psymbols, |
1762568f | 3168 | 0, psymtab_language, |
3e43a32a | 3169 | objfile); |
d3119d1e EZ |
3170 | p += 1; |
3171 | } | |
d3119d1e EZ |
3172 | } |
3173 | goto check_enum; | |
3174 | case 't': | |
3e43a32a | 3175 | if (p != namestring) /* a name is there, not |
025bb325 | 3176 | just :T... */ |
d3119d1e | 3177 | { |
04a679b8 | 3178 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3179 | VAR_DOMAIN, LOC_TYPEDEF, |
d3119d1e | 3180 | &objfile->static_psymbols, |
1762568f | 3181 | 0, psymtab_language, objfile); |
d3119d1e EZ |
3182 | } |
3183 | check_enum: | |
3e43a32a MS |
3184 | /* If this is an enumerated type, we need to add |
3185 | all the enum constants to the partial symbol | |
3186 | table. This does not cover enums without names, | |
025bb325 | 3187 | e.g. "enum {a, b} c;" in C, but fortunately |
3e43a32a MS |
3188 | those are rare. There is no way for GDB to find |
3189 | those from the enum type without spending too | |
3190 | much time on it. Thus to solve this problem, | |
3191 | the compiler needs to put out the enum in a | |
3192 | nameless type. GCC2 does this. */ | |
d3119d1e EZ |
3193 | |
3194 | /* We are looking for something of the form | |
3195 | <name> ":" ("t" | "T") [<number> "="] "e" | |
3196 | {<constant> ":" <value> ","} ";". */ | |
3197 | ||
3198 | /* Skip over the colon and the 't' or 'T'. */ | |
3199 | p += 2; | |
3e43a32a MS |
3200 | /* This type may be given a number. Also, numbers |
3201 | can come in pairs like (0,26). Skip over it. */ | |
d3119d1e EZ |
3202 | while ((*p >= '0' && *p <= '9') |
3203 | || *p == '(' || *p == ',' || *p == ')' | |
3204 | || *p == '=') | |
3205 | p++; | |
3206 | ||
3207 | if (*p++ == 'e') | |
3208 | { | |
3e43a32a MS |
3209 | /* The aix4 compiler emits extra crud before |
3210 | the members. */ | |
d3119d1e EZ |
3211 | if (*p == '-') |
3212 | { | |
3213 | /* Skip over the type (?). */ | |
3214 | while (*p != ':') | |
3215 | p++; | |
3216 | ||
3217 | /* Skip over the colon. */ | |
3218 | p++; | |
3219 | } | |
3220 | ||
3221 | /* We have found an enumerated type. */ | |
3222 | /* According to comments in read_enum_type | |
3223 | a comma could end it instead of a semicolon. | |
3224 | I don't know where that happens. | |
3225 | Accept either. */ | |
3226 | while (*p && *p != ';' && *p != ',') | |
3227 | { | |
3228 | char *q; | |
3229 | ||
3e43a32a MS |
3230 | /* Check for and handle cretinous dbx |
3231 | symbol name continuation! */ | |
d3119d1e EZ |
3232 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) |
3233 | p = next_symbol_text (objfile); | |
3234 | ||
3235 | /* Point to the character after the name | |
3236 | of the enum constant. */ | |
3237 | for (q = p; *q && *q != ':'; q++) | |
3238 | ; | |
3239 | /* Note that the value doesn't matter for | |
3e43a32a MS |
3240 | enum constants in psymtabs, just in |
3241 | symtabs. */ | |
04a679b8 | 3242 | add_psymbol_to_list (p, q - p, 1, |
176620f1 | 3243 | VAR_DOMAIN, LOC_CONST, |
3e43a32a | 3244 | &objfile->static_psymbols, |
1762568f | 3245 | 0, psymtab_language, |
3e43a32a | 3246 | objfile); |
d3119d1e EZ |
3247 | /* Point past the name. */ |
3248 | p = q; | |
3249 | /* Skip over the value. */ | |
3250 | while (*p && *p != ',') | |
3251 | p++; | |
3252 | /* Advance past the comma. */ | |
3253 | if (*p) | |
3254 | p++; | |
3255 | } | |
3256 | } | |
3257 | continue; | |
3258 | case 'c': | |
3259 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 3260 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3261 | VAR_DOMAIN, LOC_CONST, |
3e43a32a | 3262 | &objfile->static_psymbols, |
1762568f | 3263 | 0, psymtab_language, objfile); |
d3119d1e EZ |
3264 | continue; |
3265 | ||
3266 | case 'f': | |
3267 | if (! pst) | |
3268 | { | |
3269 | int name_len = p - namestring; | |
224c3ddb | 3270 | char *name = (char *) xmalloc (name_len + 1); |
b8d56208 | 3271 | |
d3119d1e EZ |
3272 | memcpy (name, namestring, name_len); |
3273 | name[name_len] = '\0'; | |
23136709 | 3274 | function_outside_compilation_unit_complaint (name); |
d3119d1e EZ |
3275 | xfree (name); |
3276 | } | |
3e43a32a MS |
3277 | sh.value += ANOFFSET (objfile->section_offsets, |
3278 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 3279 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3280 | VAR_DOMAIN, LOC_BLOCK, |
d3119d1e | 3281 | &objfile->static_psymbols, |
1762568f | 3282 | sh.value, |
d3119d1e EZ |
3283 | psymtab_language, objfile); |
3284 | continue; | |
3285 | ||
3286 | /* Global functions were ignored here, but now they | |
3e43a32a MS |
3287 | are put into the global psymtab like one would |
3288 | expect. They're also in the minimal symbol | |
3289 | table. */ | |
d3119d1e EZ |
3290 | case 'F': |
3291 | if (! pst) | |
3292 | { | |
3293 | int name_len = p - namestring; | |
224c3ddb | 3294 | char *name = (char *) xmalloc (name_len + 1); |
b8d56208 | 3295 | |
d3119d1e EZ |
3296 | memcpy (name, namestring, name_len); |
3297 | name[name_len] = '\0'; | |
23136709 | 3298 | function_outside_compilation_unit_complaint (name); |
d3119d1e EZ |
3299 | xfree (name); |
3300 | } | |
3e43a32a MS |
3301 | sh.value += ANOFFSET (objfile->section_offsets, |
3302 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 3303 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3304 | VAR_DOMAIN, LOC_BLOCK, |
d3119d1e | 3305 | &objfile->global_psymbols, |
1762568f | 3306 | sh.value, |
d3119d1e EZ |
3307 | psymtab_language, objfile); |
3308 | continue; | |
3309 | ||
3e43a32a MS |
3310 | /* Two things show up here (hopefully); static |
3311 | symbols of local scope (static used inside | |
3312 | braces) or extensions of structure symbols. We | |
3313 | can ignore both. */ | |
d3119d1e EZ |
3314 | case 'V': |
3315 | case '(': | |
3316 | case '0': | |
3317 | case '1': | |
3318 | case '2': | |
3319 | case '3': | |
3320 | case '4': | |
3321 | case '5': | |
3322 | case '6': | |
3323 | case '7': | |
3324 | case '8': | |
3325 | case '9': | |
3326 | case '-': | |
3e43a32a MS |
3327 | case '#': /* For symbol identification (used |
3328 | in live ranges). */ | |
d3119d1e EZ |
3329 | continue; |
3330 | ||
3331 | case ':': | |
3e43a32a MS |
3332 | /* It is a C++ nested symbol. We don't need to |
3333 | record it (I don't think); if we try to look up | |
3334 | foo::bar::baz, then symbols for the symtab | |
3335 | containing foo should get read in, I think. */ | |
d3119d1e EZ |
3336 | /* Someone says sun cc puts out symbols like |
3337 | /foo/baz/maclib::/usr/local/bin/maclib, | |
3338 | which would get here with a symbol type of ':'. */ | |
3339 | continue; | |
3340 | ||
3341 | default: | |
3e43a32a MS |
3342 | /* Unexpected symbol descriptor. The second and |
3343 | subsequent stabs of a continued stab can show up | |
3344 | here. The question is whether they ever can | |
3345 | mimic a normal stab--it would be nice if not, | |
3346 | since we certainly don't want to spend the time | |
3347 | searching to the end of every string looking for | |
d3119d1e EZ |
3348 | a backslash. */ |
3349 | ||
23136709 | 3350 | complaint (&symfile_complaints, |
e2e0b3e5 | 3351 | _("unknown symbol descriptor `%c'"), p[1]); |
d3119d1e EZ |
3352 | |
3353 | /* Ignore it; perhaps it is an extension that we don't | |
3354 | know about. */ | |
3355 | continue; | |
3356 | } | |
3357 | ||
3358 | case N_EXCL: | |
3359 | continue; | |
3360 | ||
3361 | case N_ENDM: | |
5afc051b | 3362 | /* Solaris 2 end of module, finish current partial |
8763cede | 3363 | symbol table. dbx_end_psymtab will set |
5afc051b JB |
3364 | pst->texthigh to the proper value, which is |
3365 | necessary if a module compiled without | |
3366 | debugging info follows this module. */ | |
203c3895 | 3367 | if (pst |
5e2b427d | 3368 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
d3119d1e EZ |
3369 | { |
3370 | pst = (struct partial_symtab *) 0; | |
3371 | includes_used = 0; | |
3372 | dependencies_used = 0; | |
3373 | } | |
d3119d1e EZ |
3374 | continue; |
3375 | ||
3376 | case N_RBRAC: | |
5afc051b JB |
3377 | if (sh.value > save_pst->texthigh) |
3378 | save_pst->texthigh = sh.value; | |
d3119d1e EZ |
3379 | continue; |
3380 | case N_EINCL: | |
3381 | case N_DSLINE: | |
3382 | case N_BSLINE: | |
3e43a32a MS |
3383 | case N_SSYM: /* Claim: Structure or union |
3384 | element. Hopefully, I can | |
3385 | ignore this. */ | |
3386 | case N_ENTRY: /* Alternate entry point; can | |
025bb325 | 3387 | ignore. */ |
3e43a32a | 3388 | case N_MAIN: /* Can definitely ignore this. */ |
025bb325 MS |
3389 | case N_CATCH: /* These are GNU C++ extensions. */ |
3390 | case N_EHDECL: /* that can safely be ignored here. */ | |
d3119d1e EZ |
3391 | case N_LENG: |
3392 | case N_BCOMM: | |
3393 | case N_ECOMM: | |
3394 | case N_ECOML: | |
3395 | case N_FNAME: | |
3396 | case N_SLINE: | |
3397 | case N_RSYM: | |
3398 | case N_PSYM: | |
3399 | case N_LBRAC: | |
3400 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
3401 | case N_DEFD: /* GNU Modula-2 */ | |
3e43a32a MS |
3402 | case N_ALIAS: /* SunPro F77: alias name, ignore |
3403 | for now. */ | |
d3119d1e | 3404 | |
025bb325 | 3405 | case N_OBJ: /* Useless types from Solaris. */ |
d3119d1e | 3406 | case N_OPT: |
3e43a32a | 3407 | /* These symbols aren't interesting; don't worry about |
025bb325 | 3408 | them. */ |
d3119d1e EZ |
3409 | |
3410 | continue; | |
3411 | ||
3412 | default: | |
3e43a32a MS |
3413 | /* If we haven't found it yet, ignore it. It's |
3414 | probably some new type we don't know about yet. */ | |
3415 | complaint (&symfile_complaints, | |
3416 | _("unknown symbol type %s"), | |
025bb325 | 3417 | hex_string (type_code)); /* CUR_SYMBOL_TYPE */ |
d3119d1e EZ |
3418 | continue; |
3419 | } | |
c5aa993b | 3420 | if (stabstring |
c906108c | 3421 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
b8c9b27d | 3422 | xfree (stabstring); |
c906108c | 3423 | } |
c5aa993b | 3424 | /* end - Handle continuation */ |
c906108c SS |
3425 | } |
3426 | } | |
3427 | else | |
3428 | { | |
3429 | for (cur_sdx = 0; cur_sdx < fh->csym;) | |
3430 | { | |
3431 | char *name; | |
fe978cb0 | 3432 | enum address_class theclass; |
2273f0ac | 3433 | CORE_ADDR minsym_value; |
c906108c SS |
3434 | |
3435 | (*swap_sym_in) (cur_bfd, | |
3436 | ((char *) debug_info->external_sym | |
3437 | + ((fh->isymBase + cur_sdx) | |
3438 | * external_sym_size)), | |
3439 | &sh); | |
3440 | ||
3441 | if (ECOFF_IS_STAB (&sh)) | |
3442 | { | |
3443 | cur_sdx++; | |
3444 | continue; | |
3445 | } | |
3446 | ||
3447 | /* Non absolute static symbols go into the minimal table. */ | |
c5aa993b | 3448 | if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil |
c906108c SS |
3449 | || (sh.index == indexNil |
3450 | && (sh.st != stStatic || sh.sc == scAbs))) | |
3451 | { | |
025bb325 | 3452 | /* FIXME, premature? */ |
c906108c SS |
3453 | cur_sdx++; |
3454 | continue; | |
3455 | } | |
3456 | ||
3457 | name = debug_info->ss + fh->issBase + sh.iss; | |
3458 | ||
2273f0ac TT |
3459 | minsym_value = sh.value; |
3460 | ||
c906108c SS |
3461 | switch (sh.sc) |
3462 | { | |
3463 | case scText: | |
3464 | case scRConst: | |
3465 | /* The value of a stEnd symbol is the displacement from the | |
3466 | corresponding start symbol value, do not relocate it. */ | |
3467 | if (sh.st != stEnd) | |
3e43a32a MS |
3468 | sh.value += ANOFFSET (objfile->section_offsets, |
3469 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3470 | break; |
3471 | case scData: | |
3472 | case scSData: | |
3473 | case scRData: | |
3474 | case scPData: | |
3475 | case scXData: | |
3e43a32a MS |
3476 | sh.value += ANOFFSET (objfile->section_offsets, |
3477 | SECT_OFF_DATA (objfile)); | |
c906108c SS |
3478 | break; |
3479 | case scBss: | |
3480 | case scSBss: | |
3e43a32a MS |
3481 | sh.value += ANOFFSET (objfile->section_offsets, |
3482 | SECT_OFF_BSS (objfile)); | |
c906108c SS |
3483 | break; |
3484 | } | |
3485 | ||
3486 | switch (sh.st) | |
3487 | { | |
3488 | CORE_ADDR high; | |
3489 | CORE_ADDR procaddr; | |
3490 | int new_sdx; | |
3491 | ||
3492 | case stStaticProc: | |
2273f0ac | 3493 | prim_record_minimal_symbol_and_info (name, minsym_value, |
b887350f | 3494 | mst_file_text, |
3e43a32a | 3495 | SECT_OFF_TEXT (objfile), |
e6dc44a8 | 3496 | objfile); |
c906108c SS |
3497 | |
3498 | /* FALLTHROUGH */ | |
3499 | ||
3500 | case stProc: | |
1fb4c65b JB |
3501 | /* Ignore all parameter symbol records. */ |
3502 | if (sh.index >= hdr->iauxMax) | |
3503 | { | |
3504 | /* Should not happen, but does when cross-compiling | |
3505 | with the MIPS compiler. FIXME -- pull later. */ | |
3506 | index_complaint (name); | |
025bb325 | 3507 | new_sdx = cur_sdx + 1; /* Don't skip at all. */ |
1fb4c65b JB |
3508 | } |
3509 | else | |
3510 | new_sdx = AUX_GET_ISYM (fh->fBigendian, | |
3511 | (debug_info->external_aux | |
3512 | + fh->iauxBase | |
3513 | + sh.index)); | |
3514 | ||
3515 | if (new_sdx <= cur_sdx) | |
3516 | { | |
3517 | /* This should not happen either... FIXME. */ | |
3518 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3519 | _("bad proc end in aux found from symbol %s"), |
1fb4c65b | 3520 | name); |
025bb325 | 3521 | new_sdx = cur_sdx + 1; /* Don't skip backward. */ |
1fb4c65b JB |
3522 | } |
3523 | ||
3524 | /* For stProc symbol records, we need to check the | |
3525 | storage class as well, as only (stProc, scText) | |
3526 | entries represent "real" procedures - See the | |
3527 | Compaq document titled "Object File / Symbol Table | |
3528 | Format Specification" for more information. If the | |
3529 | storage class is not scText, we discard the whole | |
3530 | block of symbol records for this stProc. */ | |
3531 | if (sh.st == stProc && sh.sc != scText) | |
3532 | goto skip; | |
3533 | ||
c906108c | 3534 | /* Usually there is a local and a global stProc symbol |
025bb325 | 3535 | for a function. This means that the function name |
c906108c SS |
3536 | has already been entered into the mimimal symbol table |
3537 | while processing the global symbols in pass 2 above. | |
3538 | One notable exception is the PROGRAM name from | |
3539 | f77 compiled executables, it is only put out as | |
3540 | local stProc symbol, and a global MAIN__ stProc symbol | |
3541 | points to it. It doesn't matter though, as gdb is | |
3542 | still able to find the PROGRAM name via the partial | |
3543 | symbol table, and the MAIN__ symbol via the minimal | |
3544 | symbol table. */ | |
3545 | if (sh.st == stProc) | |
04a679b8 | 3546 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3547 | VAR_DOMAIN, LOC_BLOCK, |
c906108c | 3548 | &objfile->global_psymbols, |
1762568f | 3549 | sh.value, psymtab_language, objfile); |
c906108c | 3550 | else |
04a679b8 | 3551 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3552 | VAR_DOMAIN, LOC_BLOCK, |
c906108c | 3553 | &objfile->static_psymbols, |
1762568f | 3554 | sh.value, psymtab_language, objfile); |
c906108c | 3555 | |
c906108c SS |
3556 | procaddr = sh.value; |
3557 | ||
c906108c SS |
3558 | cur_sdx = new_sdx; |
3559 | (*swap_sym_in) (cur_bfd, | |
3560 | ((char *) debug_info->external_sym | |
3561 | + ((fh->isymBase + cur_sdx - 1) | |
3562 | * external_sym_size)), | |
3563 | &sh); | |
3564 | if (sh.st != stEnd) | |
3565 | continue; | |
3566 | ||
3567 | /* Kludge for Irix 5.2 zero fh->adr. */ | |
3568 | if (!relocatable | |
5afc051b JB |
3569 | && (pst->textlow == 0 || procaddr < pst->textlow)) |
3570 | pst->textlow = procaddr; | |
c906108c SS |
3571 | |
3572 | high = procaddr + sh.value; | |
5afc051b JB |
3573 | if (high > pst->texthigh) |
3574 | pst->texthigh = high; | |
c906108c SS |
3575 | continue; |
3576 | ||
3577 | case stStatic: /* Variable */ | |
c5aa993b | 3578 | if (SC_IS_DATA (sh.sc)) |
2273f0ac | 3579 | prim_record_minimal_symbol_and_info (name, minsym_value, |
b887350f | 3580 | mst_file_data, |
b8fbeb18 | 3581 | SECT_OFF_DATA (objfile), |
c906108c SS |
3582 | objfile); |
3583 | else | |
2273f0ac | 3584 | prim_record_minimal_symbol_and_info (name, minsym_value, |
b887350f | 3585 | mst_file_bss, |
b8fbeb18 | 3586 | SECT_OFF_BSS (objfile), |
c906108c | 3587 | objfile); |
fe978cb0 | 3588 | theclass = LOC_STATIC; |
c906108c SS |
3589 | break; |
3590 | ||
c5aa993b | 3591 | case stIndirect: /* Irix5 forward declaration */ |
025bb325 | 3592 | /* Skip forward declarations from Irix5 cc. */ |
c906108c SS |
3593 | goto skip; |
3594 | ||
c5aa993b | 3595 | case stTypedef: /* Typedef */ |
c906108c SS |
3596 | /* Skip typedefs for forward declarations and opaque |
3597 | structs from alpha and mips cc. */ | |
3598 | if (sh.iss == 0 || has_opaque_xref (fh, &sh)) | |
3599 | goto skip; | |
fe978cb0 | 3600 | theclass = LOC_TYPEDEF; |
c906108c SS |
3601 | break; |
3602 | ||
3603 | case stConstant: /* Constant decl */ | |
fe978cb0 | 3604 | theclass = LOC_CONST; |
c906108c SS |
3605 | break; |
3606 | ||
3607 | case stUnion: | |
3608 | case stStruct: | |
3609 | case stEnum: | |
c5aa993b | 3610 | case stBlock: /* { }, str, un, enum */ |
c906108c | 3611 | /* Do not create a partial symbol for cc unnamed aggregates |
025bb325 | 3612 | and gcc empty aggregates. */ |
c906108c | 3613 | if ((sh.sc == scInfo |
c5aa993b | 3614 | || SC_IS_COMMON (sh.sc)) |
c906108c SS |
3615 | && sh.iss != 0 |
3616 | && sh.index != cur_sdx + 2) | |
3617 | { | |
04a679b8 | 3618 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3619 | STRUCT_DOMAIN, LOC_TYPEDEF, |
c906108c | 3620 | &objfile->static_psymbols, |
1762568f | 3621 | 0, psymtab_language, objfile); |
c906108c SS |
3622 | } |
3623 | handle_psymbol_enumerators (objfile, fh, sh.st, sh.value); | |
3624 | ||
025bb325 | 3625 | /* Skip over the block. */ |
c906108c SS |
3626 | new_sdx = sh.index; |
3627 | if (new_sdx <= cur_sdx) | |
3628 | { | |
025bb325 | 3629 | /* This happens with the Ultrix kernel. */ |
23136709 | 3630 | complaint (&symfile_complaints, |
e2e0b3e5 | 3631 | _("bad aux index at block symbol %s"), name); |
025bb325 | 3632 | new_sdx = cur_sdx + 1; /* Don't skip backward. */ |
c906108c SS |
3633 | } |
3634 | cur_sdx = new_sdx; | |
3635 | continue; | |
3636 | ||
3637 | case stFile: /* File headers */ | |
3638 | case stLabel: /* Labels */ | |
3639 | case stEnd: /* Ends of files */ | |
3640 | goto skip; | |
3641 | ||
3642 | case stLocal: /* Local variables */ | |
3643 | /* Normally these are skipped because we skip over | |
3644 | all blocks we see. However, these can occur | |
025bb325 | 3645 | as visible symbols in a .h file that contains code. */ |
c906108c SS |
3646 | goto skip; |
3647 | ||
3648 | default: | |
3649 | /* Both complaints are valid: one gives symbol name, | |
3650 | the other the offending symbol type. */ | |
e2e0b3e5 | 3651 | complaint (&symfile_complaints, _("unknown local symbol %s"), |
23136709 | 3652 | name); |
e2e0b3e5 | 3653 | complaint (&symfile_complaints, _("with type %d"), sh.st); |
c906108c SS |
3654 | cur_sdx++; |
3655 | continue; | |
3656 | } | |
025bb325 | 3657 | /* Use this gdb symbol. */ |
04a679b8 | 3658 | add_psymbol_to_list (name, strlen (name), 1, |
fe978cb0 | 3659 | VAR_DOMAIN, theclass, |
c906108c | 3660 | &objfile->static_psymbols, |
1762568f | 3661 | sh.value, psymtab_language, objfile); |
c906108c | 3662 | skip: |
025bb325 | 3663 | cur_sdx++; /* Go to next file symbol. */ |
c906108c SS |
3664 | } |
3665 | ||
025bb325 | 3666 | /* Now do enter the external symbols. */ |
c906108c SS |
3667 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; |
3668 | cur_sdx = fdr_to_pst[f_idx].n_globals; | |
3669 | PST_PRIVATE (save_pst)->extern_count = cur_sdx; | |
3670 | PST_PRIVATE (save_pst)->extern_tab = ext_ptr; | |
3671 | for (; --cur_sdx >= 0; ext_ptr++) | |
3672 | { | |
fe978cb0 | 3673 | enum address_class theclass; |
c906108c SS |
3674 | SYMR *psh; |
3675 | char *name; | |
3676 | CORE_ADDR svalue; | |
3677 | ||
3678 | if (ext_ptr->ifd != f_idx) | |
3e43a32a MS |
3679 | internal_error (__FILE__, __LINE__, |
3680 | _("failed internal consistency check")); | |
c906108c SS |
3681 | psh = &ext_ptr->asym; |
3682 | ||
3683 | /* Do not add undefined symbols to the partial symbol table. */ | |
c5aa993b | 3684 | if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil) |
c906108c SS |
3685 | continue; |
3686 | ||
3687 | svalue = psh->value; | |
3688 | switch (psh->sc) | |
3689 | { | |
3690 | case scText: | |
3691 | case scRConst: | |
3e43a32a MS |
3692 | svalue += ANOFFSET (objfile->section_offsets, |
3693 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3694 | break; |
3695 | case scData: | |
3696 | case scSData: | |
3697 | case scRData: | |
3698 | case scPData: | |
3699 | case scXData: | |
3e43a32a MS |
3700 | svalue += ANOFFSET (objfile->section_offsets, |
3701 | SECT_OFF_DATA (objfile)); | |
c906108c SS |
3702 | break; |
3703 | case scBss: | |
3704 | case scSBss: | |
3e43a32a MS |
3705 | svalue += ANOFFSET (objfile->section_offsets, |
3706 | SECT_OFF_BSS (objfile)); | |
c906108c SS |
3707 | break; |
3708 | } | |
3709 | ||
3710 | switch (psh->st) | |
3711 | { | |
3712 | case stNil: | |
3713 | /* These are generated for static symbols in .o files, | |
3714 | ignore them. */ | |
3715 | continue; | |
3716 | case stProc: | |
3717 | case stStaticProc: | |
3718 | /* External procedure symbols have been entered | |
3719 | into the minimal symbol table in pass 2 above. | |
3720 | Ignore them, as parse_external will ignore them too. */ | |
3721 | continue; | |
3722 | case stLabel: | |
fe978cb0 | 3723 | theclass = LOC_LABEL; |
c906108c SS |
3724 | break; |
3725 | default: | |
23136709 | 3726 | unknown_ext_complaint (debug_info->ssext + psh->iss); |
c906108c SS |
3727 | /* Fall through, pretend it's global. */ |
3728 | case stGlobal: | |
3729 | /* Global common symbols are resolved by the runtime loader, | |
3730 | ignore them. */ | |
c5aa993b | 3731 | if (SC_IS_COMMON (psh->sc)) |
c906108c SS |
3732 | continue; |
3733 | ||
fe978cb0 | 3734 | theclass = LOC_STATIC; |
c906108c SS |
3735 | break; |
3736 | } | |
3737 | name = debug_info->ssext + psh->iss; | |
04a679b8 | 3738 | add_psymbol_to_list (name, strlen (name), 1, |
fe978cb0 | 3739 | VAR_DOMAIN, theclass, |
c906108c | 3740 | &objfile->global_psymbols, |
1762568f | 3741 | svalue, psymtab_language, objfile); |
c906108c SS |
3742 | } |
3743 | } | |
3744 | ||
8763cede | 3745 | /* Link pst to FDR. dbx_end_psymtab returns NULL if the psymtab was |
c5aa993b | 3746 | empty and put on the free list. */ |
8763cede DE |
3747 | fdr_to_pst[f_idx].pst |
3748 | = dbx_end_psymtab (objfile, save_pst, | |
3749 | psymtab_include_list, includes_used, | |
3750 | -1, save_pst->texthigh, | |
3751 | dependency_list, dependencies_used, | |
3752 | textlow_not_set); | |
c906108c SS |
3753 | includes_used = 0; |
3754 | dependencies_used = 0; | |
3755 | ||
c906108c | 3756 | /* The objfile has its functions reordered if this partial symbol |
c5aa993b JM |
3757 | table overlaps any other partial symbol table. |
3758 | We cannot assume a reordered objfile if a partial symbol table | |
3759 | is contained within another partial symbol table, as partial symbol | |
3760 | tables for include files with executable code are contained | |
3761 | within the partial symbol table for the including source file, | |
3762 | and we do not want to flag the objfile reordered for these cases. | |
3763 | ||
3764 | This strategy works well for Irix-5.2 shared libraries, but we | |
3765 | might have to use a more elaborate (and slower) algorithm for | |
3766 | other cases. */ | |
c906108c SS |
3767 | save_pst = fdr_to_pst[f_idx].pst; |
3768 | if (save_pst != NULL | |
5afc051b | 3769 | && save_pst->textlow != 0 |
c906108c SS |
3770 | && !(objfile->flags & OBJF_REORDERED)) |
3771 | { | |
3772 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
c5aa993b JM |
3773 | { |
3774 | if (save_pst != pst | |
5afc051b JB |
3775 | && save_pst->textlow >= pst->textlow |
3776 | && save_pst->textlow < pst->texthigh | |
3777 | && save_pst->texthigh > pst->texthigh) | |
c5aa993b JM |
3778 | { |
3779 | objfile->flags |= OBJF_REORDERED; | |
3780 | break; | |
3781 | } | |
3782 | } | |
c906108c SS |
3783 | } |
3784 | } | |
3785 | ||
025bb325 | 3786 | /* Now scan the FDRs for dependencies. */ |
c906108c SS |
3787 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) |
3788 | { | |
3789 | fh = f_idx + debug_info->fdr; | |
3790 | pst = fdr_to_pst[f_idx].pst; | |
3791 | ||
c5aa993b | 3792 | if (pst == (struct partial_symtab *) NULL) |
c906108c SS |
3793 | continue; |
3794 | ||
025bb325 | 3795 | /* This should catch stabs-in-ecoff. */ |
c906108c SS |
3796 | if (fh->crfd <= 1) |
3797 | continue; | |
3798 | ||
3e43a32a MS |
3799 | /* Skip the first file indirect entry as it is a self dependency for |
3800 | source files or a reverse .h -> .c dependency for header files. */ | |
c906108c SS |
3801 | pst->number_of_dependencies = 0; |
3802 | pst->dependencies = | |
3803 | ((struct partial_symtab **) | |
8b92e4d5 | 3804 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
3805 | ((fh->crfd - 1) |
3806 | * sizeof (struct partial_symtab *)))); | |
3807 | for (s_idx = 1; s_idx < fh->crfd; s_idx++) | |
3808 | { | |
3809 | RFDT rh; | |
3810 | ||
3811 | (*swap_rfd_in) (cur_bfd, | |
3812 | ((char *) debug_info->external_rfd | |
3813 | + (fh->rfdBase + s_idx) * external_rfd_size), | |
3814 | &rh); | |
3815 | if (rh < 0 || rh >= hdr->ifdMax) | |
3816 | { | |
e2e0b3e5 | 3817 | complaint (&symfile_complaints, _("bad file number %ld"), rh); |
c906108c SS |
3818 | continue; |
3819 | } | |
3820 | ||
3821 | /* Skip self dependencies of header files. */ | |
3822 | if (rh == f_idx) | |
3823 | continue; | |
3824 | ||
3825 | /* Do not add to dependeny list if psymtab was empty. */ | |
c5aa993b | 3826 | if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL) |
c906108c | 3827 | continue; |
3e43a32a MS |
3828 | pst->dependencies[pst->number_of_dependencies++] |
3829 | = fdr_to_pst[rh].pst; | |
c906108c SS |
3830 | } |
3831 | } | |
3832 | ||
3833 | /* Remove the dummy psymtab created for -O3 images above, if it is | |
3834 | still empty, to enable the detection of stripped executables. */ | |
3835 | if (objfile->psymtabs->next == NULL | |
3836 | && objfile->psymtabs->number_of_dependencies == 0 | |
3837 | && objfile->psymtabs->n_global_syms == 0 | |
3838 | && objfile->psymtabs->n_static_syms == 0) | |
3839 | objfile->psymtabs = NULL; | |
3840 | do_cleanups (old_chain); | |
3841 | } | |
3842 | ||
3843 | /* If the current psymbol has an enumerated type, we need to add | |
b021a221 | 3844 | all the enum constants to the partial symbol table. */ |
c906108c SS |
3845 | |
3846 | static void | |
fba45db2 KB |
3847 | handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype, |
3848 | CORE_ADDR svalue) | |
c906108c SS |
3849 | { |
3850 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
12b9c64f | 3851 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c | 3852 | char *ext_sym = ((char *) debug_info->external_sym |
c5aa993b | 3853 | + ((fh->isymBase + cur_sdx + 1) * external_sym_size)); |
c906108c SS |
3854 | SYMR sh; |
3855 | TIR tir; | |
3856 | ||
3857 | switch (stype) | |
3858 | { | |
3859 | case stEnum: | |
3860 | break; | |
3861 | ||
3862 | case stBlock: | |
3863 | /* It is an enumerated type if the next symbol entry is a stMember | |
c5aa993b JM |
3864 | and its auxiliary index is indexNil or its auxiliary entry |
3865 | is a plain btNil or btVoid. | |
3866 | Alpha cc -migrate enums are recognized by a zero index and | |
3867 | a zero symbol value. | |
3868 | DU 4.0 cc enums are recognized by a member type of btEnum without | |
3869 | qualifiers and a zero symbol value. */ | |
c906108c SS |
3870 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); |
3871 | if (sh.st != stMember) | |
3872 | return; | |
3873 | ||
3874 | if (sh.index == indexNil | |
3875 | || (sh.index == 0 && svalue == 0)) | |
3876 | break; | |
3877 | (*debug_swap->swap_tir_in) (fh->fBigendian, | |
3878 | &(debug_info->external_aux | |
3879 | + fh->iauxBase + sh.index)->a_ti, | |
3880 | &tir); | |
3881 | if ((tir.bt != btNil | |
3882 | && tir.bt != btVoid | |
3883 | && (tir.bt != btEnum || svalue != 0)) | |
3884 | || tir.tq0 != tqNil) | |
3885 | return; | |
3886 | break; | |
3887 | ||
3888 | default: | |
3889 | return; | |
3890 | } | |
3891 | ||
3892 | for (;;) | |
3893 | { | |
3894 | char *name; | |
3895 | ||
3896 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); | |
3897 | if (sh.st != stMember) | |
3898 | break; | |
3899 | name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
3900 | ||
3901 | /* Note that the value doesn't matter for enum constants | |
c5aa993b | 3902 | in psymtabs, just in symtabs. */ |
04a679b8 | 3903 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3904 | VAR_DOMAIN, LOC_CONST, |
1762568f DE |
3905 | &objfile->static_psymbols, |
3906 | 0, psymtab_language, objfile); | |
c906108c SS |
3907 | ext_sym += external_sym_size; |
3908 | } | |
3909 | } | |
3910 | ||
025bb325 | 3911 | /* Get the next symbol. OBJFILE is unused. */ |
0e7e8d51 | 3912 | |
c906108c | 3913 | static char * |
0e7e8d51 | 3914 | mdebug_next_symbol_text (struct objfile *objfile) |
c906108c SS |
3915 | { |
3916 | SYMR sh; | |
3917 | ||
3918 | cur_sdx++; | |
3919 | (*debug_swap->swap_sym_in) (cur_bfd, | |
3920 | ((char *) debug_info->external_sym | |
3921 | + ((cur_fdr->isymBase + cur_sdx) | |
3922 | * debug_swap->external_sym_size)), | |
3923 | &sh); | |
3924 | return debug_info->ss + cur_fdr->issBase + sh.iss; | |
3925 | } | |
3926 | ||
3927 | /* Ancillary function to psymtab_to_symtab(). Does all the work | |
3928 | for turning the partial symtab PST into a symtab, recurring | |
3929 | first on all dependent psymtabs. The argument FILENAME is | |
3930 | only passed so we can see in debug stack traces what file | |
3931 | is being read. | |
3932 | ||
3933 | This function has a split personality, based on whether the | |
3934 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. | |
3935 | The flow of control and even the memory allocation differs. FIXME. */ | |
3936 | ||
3937 | static void | |
5c80ed9d TT |
3938 | psymtab_to_symtab_1 (struct objfile *objfile, |
3939 | struct partial_symtab *pst, const char *filename) | |
c906108c SS |
3940 | { |
3941 | bfd_size_type external_sym_size; | |
3942 | bfd_size_type external_pdr_size; | |
12b9c64f AO |
3943 | void (*swap_sym_in) (bfd *, void *, SYMR *); |
3944 | void (*swap_pdr_in) (bfd *, void *, PDR *); | |
c906108c | 3945 | int i; |
43f3e411 | 3946 | struct compunit_symtab *cust = NULL; |
c906108c SS |
3947 | FDR *fh; |
3948 | struct linetable *lines; | |
3949 | CORE_ADDR lowest_pdr_addr = 0; | |
16db6055 | 3950 | int last_symtab_ended = 0; |
18a94d75 | 3951 | struct section_offsets *section_offsets = objfile->section_offsets; |
c906108c SS |
3952 | |
3953 | if (pst->readin) | |
3954 | return; | |
3955 | pst->readin = 1; | |
3956 | ||
3957 | /* Read in all partial symbtabs on which this one is dependent. | |
3958 | NOTE that we do have circular dependencies, sigh. We solved | |
3959 | that by setting pst->readin before this point. */ | |
3960 | ||
3961 | for (i = 0; i < pst->number_of_dependencies; i++) | |
3962 | if (!pst->dependencies[i]->readin) | |
3963 | { | |
3964 | /* Inform about additional files to be read in. */ | |
3965 | if (info_verbose) | |
3966 | { | |
3967 | fputs_filtered (" ", gdb_stdout); | |
3968 | wrap_here (""); | |
3969 | fputs_filtered ("and ", gdb_stdout); | |
3970 | wrap_here (""); | |
3971 | printf_filtered ("%s...", | |
3972 | pst->dependencies[i]->filename); | |
3973 | wrap_here (""); /* Flush output */ | |
3974 | gdb_flush (gdb_stdout); | |
3975 | } | |
025bb325 | 3976 | /* We only pass the filename for debug purposes. */ |
5c80ed9d | 3977 | psymtab_to_symtab_1 (objfile, pst->dependencies[i], |
c906108c SS |
3978 | pst->dependencies[i]->filename); |
3979 | } | |
3980 | ||
3981 | /* Do nothing if this is a dummy psymtab. */ | |
3982 | ||
3983 | if (pst->n_global_syms == 0 && pst->n_static_syms == 0 | |
5afc051b | 3984 | && pst->textlow == 0 && pst->texthigh == 0) |
c906108c SS |
3985 | return; |
3986 | ||
025bb325 | 3987 | /* Now read the symbols for this symtab. */ |
c906108c SS |
3988 | |
3989 | cur_bfd = CUR_BFD (pst); | |
3990 | debug_swap = DEBUG_SWAP (pst); | |
3991 | debug_info = DEBUG_INFO (pst); | |
3992 | pending_list = PENDING_LIST (pst); | |
3993 | external_sym_size = debug_swap->external_sym_size; | |
3994 | external_pdr_size = debug_swap->external_pdr_size; | |
3995 | swap_sym_in = debug_swap->swap_sym_in; | |
3996 | swap_pdr_in = debug_swap->swap_pdr_in; | |
5c80ed9d | 3997 | mdebugread_objfile = objfile; |
c906108c SS |
3998 | cur_fd = FDR_IDX (pst); |
3999 | fh = ((cur_fd == -1) | |
4000 | ? (FDR *) NULL | |
4001 | : debug_info->fdr + cur_fd); | |
4002 | cur_fdr = fh; | |
4003 | ||
025bb325 | 4004 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ |
c906108c SS |
4005 | processing_gcc_compilation = 0; |
4006 | if (fh != (FDR *) NULL && fh->csym >= 2) | |
4007 | { | |
4008 | SYMR sh; | |
4009 | ||
4010 | (*swap_sym_in) (cur_bfd, | |
4011 | ((char *) debug_info->external_sym | |
4012 | + (fh->isymBase + 1) * external_sym_size), | |
4013 | &sh); | |
ee300cd4 AC |
4014 | if (strcmp (debug_info->ss + fh->issBase + sh.iss, |
4015 | stabs_symbol) == 0) | |
c906108c SS |
4016 | { |
4017 | /* We indicate that this is a GCC compilation so that certain | |
4018 | features will be enabled in stabsread/dbxread. */ | |
4019 | processing_gcc_compilation = 2; | |
4020 | } | |
4021 | } | |
4022 | ||
4023 | if (processing_gcc_compilation != 0) | |
4024 | { | |
5c80ed9d | 4025 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
4026 | |
4027 | /* This symbol table contains stabs-in-ecoff entries. */ | |
4028 | ||
025bb325 | 4029 | /* Parse local symbols first. */ |
c906108c | 4030 | |
025bb325 | 4031 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr. */ |
c906108c | 4032 | { |
dd707e8e | 4033 | mdebugread_objfile = NULL; |
c906108c SS |
4034 | return; |
4035 | } | |
4036 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
4037 | { | |
4038 | SYMR sh; | |
4039 | char *name; | |
4040 | CORE_ADDR valu; | |
4041 | ||
4042 | (*swap_sym_in) (cur_bfd, | |
4043 | (((char *) debug_info->external_sym) | |
4044 | + (fh->isymBase + cur_sdx) * external_sym_size), | |
4045 | &sh); | |
4046 | name = debug_info->ss + fh->issBase + sh.iss; | |
4047 | valu = sh.value; | |
4048 | /* XXX This is a hack. It will go away! */ | |
4049 | if (ECOFF_IS_STAB (&sh) || (name[0] == '#')) | |
4050 | { | |
4051 | int type_code = ECOFF_UNMARK_STAB (sh.index); | |
4052 | ||
4053 | /* We should never get non N_STAB symbols here, but they | |
c5aa993b JM |
4054 | should be harmless, so keep process_one_symbol from |
4055 | complaining about them. */ | |
c906108c SS |
4056 | if (type_code & N_STAB) |
4057 | { | |
16db6055 EZ |
4058 | /* If we found a trailing N_SO with no name, process |
4059 | it here instead of in process_one_symbol, so we | |
4060 | can keep a handle to its symtab. The symtab | |
4061 | would otherwise be ended twice, once in | |
025bb325 | 4062 | process_one_symbol, and once after this loop. */ |
16db6055 | 4063 | if (type_code == N_SO |
46212e0b | 4064 | && get_last_source_file () |
16db6055 EZ |
4065 | && previous_stab_code != (unsigned char) N_SO |
4066 | && *name == '\000') | |
4067 | { | |
18a94d75 | 4068 | valu += ANOFFSET (section_offsets, |
5c80ed9d | 4069 | SECT_OFF_TEXT (objfile)); |
16db6055 | 4070 | previous_stab_code = N_SO; |
43f3e411 | 4071 | cust = end_symtab (valu, SECT_OFF_TEXT (objfile)); |
16db6055 EZ |
4072 | end_stabs (); |
4073 | last_symtab_ended = 1; | |
4074 | } | |
4075 | else | |
4076 | { | |
4077 | last_symtab_ended = 0; | |
4078 | process_one_symbol (type_code, 0, valu, name, | |
18a94d75 | 4079 | section_offsets, objfile); |
16db6055 | 4080 | } |
c906108c SS |
4081 | } |
4082 | /* Similarly a hack. */ | |
4083 | else if (name[0] == '#') | |
4084 | { | |
4085 | process_one_symbol (N_SLINE, 0, valu, name, | |
18a94d75 | 4086 | section_offsets, objfile); |
c906108c SS |
4087 | } |
4088 | if (type_code == N_FUN) | |
4089 | { | |
4090 | /* Make up special symbol to contain | |
025bb325 | 4091 | procedure specific info. */ |
f92761ec | 4092 | struct mdebug_extra_func_info *e = |
b8d56208 | 4093 | ((struct mdebug_extra_func_info *) |
dd707e8e | 4094 | obstack_alloc (&mdebugread_objfile->objfile_obstack, |
b8d56208 | 4095 | sizeof (struct mdebug_extra_func_info))); |
f92761ec | 4096 | struct symbol *s = new_symbol (MDEBUG_EFI_SYMBOL_NAME); |
c906108c | 4097 | |
f92761ec | 4098 | memset (e, 0, sizeof (struct mdebug_extra_func_info)); |
176620f1 | 4099 | SYMBOL_DOMAIN (s) = LABEL_DOMAIN; |
f1e6e072 | 4100 | SYMBOL_ACLASS_INDEX (s) = LOC_CONST; |
5c80ed9d | 4101 | SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_void; |
9918cab9 | 4102 | SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e; |
c906108c SS |
4103 | e->pdr.framereg = -1; |
4104 | add_symbol_to_list (s, &local_symbols); | |
4105 | } | |
4106 | } | |
4107 | else if (sh.st == stLabel) | |
4108 | { | |
4109 | if (sh.index == indexNil) | |
4110 | { | |
4111 | /* This is what the gcc2_compiled and __gnu_compiled_* | |
4112 | show up as. So don't complain. */ | |
4113 | ; | |
4114 | } | |
4115 | else | |
4116 | { | |
025bb325 | 4117 | /* Handle encoded stab line number. */ |
18a94d75 | 4118 | valu += ANOFFSET (section_offsets, |
5c80ed9d | 4119 | SECT_OFF_TEXT (objfile)); |
fbf65064 UW |
4120 | record_line (current_subfile, sh.index, |
4121 | gdbarch_addr_bits_remove (gdbarch, valu)); | |
c906108c SS |
4122 | } |
4123 | } | |
4124 | else if (sh.st == stProc || sh.st == stStaticProc | |
4125 | || sh.st == stStatic || sh.st == stEnd) | |
025bb325 | 4126 | /* These are generated by gcc-2.x, do not complain. */ |
c906108c SS |
4127 | ; |
4128 | else | |
3e43a32a MS |
4129 | complaint (&symfile_complaints, |
4130 | _("unknown stabs symbol %s"), name); | |
c906108c | 4131 | } |
16db6055 EZ |
4132 | |
4133 | if (! last_symtab_ended) | |
4134 | { | |
43f3e411 | 4135 | cust = end_symtab (pst->texthigh, SECT_OFF_TEXT (objfile)); |
16db6055 EZ |
4136 | end_stabs (); |
4137 | } | |
c906108c | 4138 | |
c906108c | 4139 | /* There used to be a call to sort_blocks here, but this should not |
c5aa993b JM |
4140 | be necessary for stabs symtabs. And as sort_blocks modifies the |
4141 | start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK, | |
4142 | it did the wrong thing if the first procedure in a file was | |
4143 | generated via asm statements. */ | |
c906108c SS |
4144 | |
4145 | /* Fill in procedure info next. */ | |
4146 | if (fh->cpd > 0) | |
4147 | { | |
4148 | PDR *pr_block; | |
4149 | struct cleanup *old_chain; | |
4150 | char *pdr_ptr; | |
4151 | char *pdr_end; | |
4152 | PDR *pdr_in; | |
4153 | PDR *pdr_in_end; | |
4154 | ||
8d749320 | 4155 | pr_block = XNEWVEC (PDR, fh->cpd); |
b8c9b27d | 4156 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4157 | |
4158 | pdr_ptr = ((char *) debug_info->external_pdr | |
4159 | + fh->ipdFirst * external_pdr_size); | |
4160 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4161 | pdr_in = pr_block; | |
4162 | for (; | |
4163 | pdr_ptr < pdr_end; | |
4164 | pdr_ptr += external_pdr_size, pdr_in++) | |
4165 | { | |
4166 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4167 | ||
4168 | /* Determine lowest PDR address, the PDRs are not always | |
c5aa993b | 4169 | sorted. */ |
c906108c SS |
4170 | if (pdr_in == pr_block) |
4171 | lowest_pdr_addr = pdr_in->adr; | |
4172 | else if (pdr_in->adr < lowest_pdr_addr) | |
4173 | lowest_pdr_addr = pdr_in->adr; | |
4174 | } | |
4175 | ||
4176 | pdr_in = pr_block; | |
4177 | pdr_in_end = pdr_in + fh->cpd; | |
4178 | for (; pdr_in < pdr_in_end; pdr_in++) | |
43f3e411 | 4179 | parse_procedure (pdr_in, cust, pst); |
c906108c SS |
4180 | |
4181 | do_cleanups (old_chain); | |
4182 | } | |
4183 | } | |
4184 | else | |
4185 | { | |
4186 | /* This symbol table contains ordinary ecoff entries. */ | |
4187 | ||
30cc903e | 4188 | int maxlines, size; |
c906108c SS |
4189 | EXTR *ext_ptr; |
4190 | ||
c906108c SS |
4191 | if (fh == 0) |
4192 | { | |
4193 | maxlines = 0; | |
43f3e411 | 4194 | cust = new_symtab ("unknown", 0, objfile); |
c906108c SS |
4195 | } |
4196 | else | |
4197 | { | |
c906108c | 4198 | maxlines = 2 * fh->cline; |
43f3e411 | 4199 | cust = new_symtab (pst->filename, maxlines, objfile); |
c906108c SS |
4200 | |
4201 | /* The proper language was already determined when building | |
4202 | the psymtab, use it. */ | |
43f3e411 | 4203 | COMPUNIT_FILETABS (cust)->language = PST_PRIVATE (pst)->pst_language; |
c906108c SS |
4204 | } |
4205 | ||
43f3e411 | 4206 | psymtab_language = COMPUNIT_FILETABS (cust)->language; |
c906108c | 4207 | |
43f3e411 | 4208 | lines = SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust)); |
c906108c | 4209 | |
025bb325 | 4210 | /* Get a new lexical context. */ |
c906108c SS |
4211 | |
4212 | push_parse_stack (); | |
43f3e411 DE |
4213 | top_stack->cur_st = COMPUNIT_FILETABS (cust); |
4214 | top_stack->cur_block | |
4215 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), STATIC_BLOCK); | |
5afc051b | 4216 | BLOCK_START (top_stack->cur_block) = pst->textlow; |
c906108c SS |
4217 | BLOCK_END (top_stack->cur_block) = 0; |
4218 | top_stack->blocktype = stFile; | |
c906108c SS |
4219 | top_stack->cur_type = 0; |
4220 | top_stack->procadr = 0; | |
4221 | top_stack->numargs = 0; | |
4222 | found_ecoff_debugging_info = 0; | |
4223 | ||
4224 | if (fh) | |
4225 | { | |
4226 | char *sym_ptr; | |
4227 | char *sym_end; | |
4228 | ||
025bb325 | 4229 | /* Parse local symbols first. */ |
c906108c SS |
4230 | sym_ptr = ((char *) debug_info->external_sym |
4231 | + fh->isymBase * external_sym_size); | |
4232 | sym_end = sym_ptr + fh->csym * external_sym_size; | |
4233 | while (sym_ptr < sym_end) | |
4234 | { | |
4235 | SYMR sh; | |
4236 | int c; | |
4237 | ||
4238 | (*swap_sym_in) (cur_bfd, sym_ptr, &sh); | |
4239 | c = parse_symbol (&sh, | |
4240 | debug_info->external_aux + fh->iauxBase, | |
3e43a32a | 4241 | sym_ptr, fh->fBigendian, |
18a94d75 | 4242 | section_offsets, objfile); |
c906108c SS |
4243 | sym_ptr += c * external_sym_size; |
4244 | } | |
4245 | ||
4246 | /* Linenumbers. At the end, check if we can save memory. | |
4247 | parse_lines has to look ahead an arbitrary number of PDR | |
4248 | structures, so we swap them all first. */ | |
4249 | if (fh->cpd > 0) | |
4250 | { | |
4251 | PDR *pr_block; | |
4252 | struct cleanup *old_chain; | |
4253 | char *pdr_ptr; | |
4254 | char *pdr_end; | |
4255 | PDR *pdr_in; | |
4256 | PDR *pdr_in_end; | |
4257 | ||
8d749320 | 4258 | pr_block = XNEWVEC (PDR, fh->cpd); |
c906108c | 4259 | |
b8c9b27d | 4260 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4261 | |
4262 | pdr_ptr = ((char *) debug_info->external_pdr | |
4263 | + fh->ipdFirst * external_pdr_size); | |
4264 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4265 | pdr_in = pr_block; | |
4266 | for (; | |
4267 | pdr_ptr < pdr_end; | |
4268 | pdr_ptr += external_pdr_size, pdr_in++) | |
4269 | { | |
4270 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4271 | ||
4272 | /* Determine lowest PDR address, the PDRs are not always | |
4273 | sorted. */ | |
4274 | if (pdr_in == pr_block) | |
4275 | lowest_pdr_addr = pdr_in->adr; | |
4276 | else if (pdr_in->adr < lowest_pdr_addr) | |
4277 | lowest_pdr_addr = pdr_in->adr; | |
4278 | } | |
4279 | ||
3e43a32a MS |
4280 | parse_lines (fh, pr_block, lines, maxlines, |
4281 | pst, lowest_pdr_addr); | |
c906108c SS |
4282 | if (lines->nitems < fh->cline) |
4283 | lines = shrink_linetable (lines); | |
4284 | ||
4285 | /* Fill in procedure info next. */ | |
4286 | pdr_in = pr_block; | |
4287 | pdr_in_end = pdr_in + fh->cpd; | |
4288 | for (; pdr_in < pdr_in_end; pdr_in++) | |
43f3e411 | 4289 | parse_procedure (pdr_in, NULL, pst); |
c906108c SS |
4290 | |
4291 | do_cleanups (old_chain); | |
4292 | } | |
4293 | } | |
4294 | ||
30cc903e TT |
4295 | size = lines->nitems; |
4296 | if (size > 1) | |
4297 | --size; | |
43f3e411 | 4298 | SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust)) |
224c3ddb SM |
4299 | = ((struct linetable *) |
4300 | obstack_copy (&mdebugread_objfile->objfile_obstack, | |
4301 | lines, (sizeof (struct linetable) | |
4302 | + size * sizeof (lines->item)))); | |
30cc903e | 4303 | xfree (lines); |
c906108c SS |
4304 | |
4305 | /* .. and our share of externals. | |
025bb325 MS |
4306 | XXX use the global list to speed up things here. How? |
4307 | FIXME, Maybe quit once we have found the right number of ext's? */ | |
43f3e411 | 4308 | top_stack->cur_st = COMPUNIT_FILETABS (cust); |
3e43a32a | 4309 | top_stack->cur_block |
439247b6 | 4310 | = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack->cur_st), |
3e43a32a | 4311 | GLOBAL_BLOCK); |
c906108c | 4312 | top_stack->blocktype = stFile; |
c906108c SS |
4313 | |
4314 | ext_ptr = PST_PRIVATE (pst)->extern_tab; | |
4315 | for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) | |
3e43a32a | 4316 | parse_external (ext_ptr, fh->fBigendian, |
18a94d75 | 4317 | section_offsets, objfile); |
c906108c SS |
4318 | |
4319 | /* If there are undefined symbols, tell the user. | |
c5aa993b JM |
4320 | The alpha has an undefined symbol for every symbol that is |
4321 | from a shared library, so tell the user only if verbose is on. */ | |
c906108c SS |
4322 | if (info_verbose && n_undef_symbols) |
4323 | { | |
a3f17187 | 4324 | printf_filtered (_("File %s contains %d unresolved references:"), |
43f3e411 DE |
4325 | symtab_to_filename_for_display |
4326 | (COMPUNIT_FILETABS (cust)), | |
05cba821 | 4327 | n_undef_symbols); |
3e43a32a MS |
4328 | printf_filtered ("\n\t%4d variables\n\t%4d " |
4329 | "procedures\n\t%4d labels\n", | |
c906108c SS |
4330 | n_undef_vars, n_undef_procs, n_undef_labels); |
4331 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; | |
4332 | ||
4333 | } | |
4334 | pop_parse_stack (); | |
4335 | ||
43f3e411 | 4336 | sort_blocks (COMPUNIT_FILETABS (cust)); |
c906108c SS |
4337 | } |
4338 | ||
4339 | /* Now link the psymtab and the symtab. */ | |
43f3e411 | 4340 | pst->compunit_symtab = cust; |
c906108c | 4341 | |
dd707e8e | 4342 | mdebugread_objfile = NULL; |
c906108c SS |
4343 | } |
4344 | \f | |
025bb325 | 4345 | /* Ancillary parsing procedures. */ |
c906108c SS |
4346 | |
4347 | /* Return 1 if the symbol pointed to by SH has a cross reference | |
4348 | to an opaque aggregate type, else 0. */ | |
4349 | ||
4350 | static int | |
fba45db2 | 4351 | has_opaque_xref (FDR *fh, SYMR *sh) |
c906108c SS |
4352 | { |
4353 | TIR tir; | |
4354 | union aux_ext *ax; | |
4355 | RNDXR rn[1]; | |
4356 | unsigned int rf; | |
4357 | ||
4358 | if (sh->index == indexNil) | |
4359 | return 0; | |
4360 | ||
4361 | ax = debug_info->external_aux + fh->iauxBase + sh->index; | |
4362 | (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir); | |
4363 | if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum) | |
4364 | return 0; | |
4365 | ||
4366 | ax++; | |
4367 | (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn); | |
4368 | if (rn->rfd == 0xfff) | |
4369 | rf = AUX_GET_ISYM (fh->fBigendian, ax + 1); | |
4370 | else | |
4371 | rf = rn->rfd; | |
4372 | if (rf != -1) | |
4373 | return 0; | |
4374 | return 1; | |
4375 | } | |
4376 | ||
4377 | /* Lookup the type at relative index RN. Return it in TPP | |
4378 | if found and in any event come up with its name PNAME. | |
4379 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). | |
025bb325 | 4380 | Return value says how many aux symbols we ate. */ |
c906108c SS |
4381 | |
4382 | static int | |
3e43a32a MS |
4383 | cross_ref (int fd, union aux_ext *ax, struct type **tpp, |
4384 | enum type_code type_code, | |
025bb325 | 4385 | /* Use to alloc new type if none is found. */ |
fba45db2 | 4386 | char **pname, int bigend, char *sym_name) |
c906108c SS |
4387 | { |
4388 | RNDXR rn[1]; | |
4389 | unsigned int rf; | |
4390 | int result = 1; | |
4391 | FDR *fh; | |
4392 | char *esh; | |
4393 | SYMR sh; | |
4394 | int xref_fd; | |
4395 | struct mdebug_pending *pend; | |
4396 | ||
be903358 | 4397 | *tpp = NULL; |
c906108c SS |
4398 | |
4399 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
4400 | ||
025bb325 | 4401 | /* Escape index means 'the next one'. */ |
c906108c SS |
4402 | if (rn->rfd == 0xfff) |
4403 | { | |
4404 | result++; | |
4405 | rf = AUX_GET_ISYM (bigend, ax + 1); | |
4406 | } | |
4407 | else | |
4408 | { | |
4409 | rf = rn->rfd; | |
4410 | } | |
4411 | ||
4412 | /* mips cc uses a rf of -1 for opaque struct definitions. | |
4413 | Set TYPE_FLAG_STUB for these types so that check_typedef will | |
4414 | resolve them if the struct gets defined in another compilation unit. */ | |
4415 | if (rf == -1) | |
4416 | { | |
4417 | *pname = "<undefined>"; | |
3e43a32a | 4418 | *tpp = init_type (type_code, 0, TYPE_FLAG_STUB, |
dd707e8e | 4419 | (char *) NULL, mdebugread_objfile); |
c906108c SS |
4420 | return result; |
4421 | } | |
4422 | ||
4423 | /* mips cc uses an escaped rn->index of 0 for struct return types | |
025bb325 | 4424 | of procedures that were compiled without -g. These will always remain |
c906108c SS |
4425 | undefined. */ |
4426 | if (rn->rfd == 0xfff && rn->index == 0) | |
4427 | { | |
4428 | *pname = "<undefined>"; | |
4429 | return result; | |
4430 | } | |
4431 | ||
4432 | /* Find the relative file descriptor and the symbol in it. */ | |
4433 | fh = get_rfd (fd, rf); | |
4434 | xref_fd = fh - debug_info->fdr; | |
4435 | ||
4436 | if (rn->index >= fh->csym) | |
4437 | { | |
4438 | /* File indirect entry is corrupt. */ | |
4439 | *pname = "<illegal>"; | |
23136709 | 4440 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4441 | return result; |
4442 | } | |
4443 | ||
4444 | /* If we have processed this symbol then we left a forwarding | |
4445 | pointer to the type in the pending list. If not, we`ll put | |
4446 | it in a list of pending types, to be processed later when | |
4447 | the file will be. In any event, we collect the name for the | |
4448 | type here. */ | |
4449 | ||
4450 | esh = ((char *) debug_info->external_sym | |
4451 | + ((fh->isymBase + rn->index) | |
4452 | * debug_swap->external_sym_size)); | |
4453 | (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh); | |
4454 | ||
4455 | /* Make sure that this type of cross reference can be handled. */ | |
4456 | if ((sh.sc != scInfo | |
4457 | || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect | |
4458 | && sh.st != stStruct && sh.st != stUnion | |
4459 | && sh.st != stEnum)) | |
c5aa993b | 4460 | && (sh.st != stBlock || !SC_IS_COMMON (sh.sc))) |
c906108c SS |
4461 | { |
4462 | /* File indirect entry is corrupt. */ | |
4463 | *pname = "<illegal>"; | |
23136709 | 4464 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4465 | return result; |
4466 | } | |
4467 | ||
4468 | *pname = debug_info->ss + fh->issBase + sh.iss; | |
4469 | ||
4470 | pend = is_pending_symbol (fh, esh); | |
4471 | if (pend) | |
4472 | *tpp = pend->t; | |
4473 | else | |
4474 | { | |
4475 | /* We have not yet seen this type. */ | |
4476 | ||
4477 | if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect) | |
4478 | { | |
4479 | TIR tir; | |
4480 | ||
4481 | /* alpha cc puts out a stTypedef with a sh.iss of zero for | |
4482 | two cases: | |
4483 | a) forward declarations of structs/unions/enums which are not | |
c5aa993b | 4484 | defined in this compilation unit. |
025bb325 | 4485 | For these the type will be void. This is a bad design decision |
c5aa993b JM |
4486 | as cross referencing across compilation units is impossible |
4487 | due to the missing name. | |
c906108c | 4488 | b) forward declarations of structs/unions/enums/typedefs which |
c5aa993b | 4489 | are defined later in this file or in another file in the same |
025bb325 | 4490 | compilation unit. Irix5 cc uses a stIndirect symbol for this. |
c5aa993b | 4491 | Simply cross reference those again to get the true type. |
c906108c SS |
4492 | The forward references are not entered in the pending list and |
4493 | in the symbol table. */ | |
4494 | ||
4495 | (*debug_swap->swap_tir_in) (bigend, | |
4496 | &(debug_info->external_aux | |
4497 | + fh->iauxBase + sh.index)->a_ti, | |
4498 | &tir); | |
4499 | if (tir.tq0 != tqNil) | |
23136709 | 4500 | complaint (&symfile_complaints, |
e2e0b3e5 | 4501 | _("illegal tq0 in forward typedef for %s"), sym_name); |
c906108c SS |
4502 | switch (tir.bt) |
4503 | { | |
4504 | case btVoid: | |
4505 | *tpp = init_type (type_code, 0, 0, (char *) NULL, | |
dd707e8e | 4506 | mdebugread_objfile); |
c5aa993b | 4507 | *pname = "<undefined>"; |
c906108c SS |
4508 | break; |
4509 | ||
4510 | case btStruct: | |
4511 | case btUnion: | |
4512 | case btEnum: | |
4513 | cross_ref (xref_fd, | |
4514 | (debug_info->external_aux | |
4515 | + fh->iauxBase + sh.index + 1), | |
4516 | tpp, type_code, pname, | |
4517 | fh->fBigendian, sym_name); | |
4518 | break; | |
4519 | ||
4520 | case btTypedef: | |
025bb325 | 4521 | /* Follow a forward typedef. This might recursively |
c5aa993b JM |
4522 | call cross_ref till we get a non typedef'ed type. |
4523 | FIXME: This is not correct behaviour, but gdb currently | |
025bb325 | 4524 | cannot handle typedefs without type copying. Type |
c5aa993b JM |
4525 | copying is impossible as we might have mutual forward |
4526 | references between two files and the copied type would not | |
4527 | get filled in when we later parse its definition. */ | |
c906108c SS |
4528 | *tpp = parse_type (xref_fd, |
4529 | debug_info->external_aux + fh->iauxBase, | |
4530 | sh.index, | |
c5aa993b | 4531 | (int *) NULL, |
c906108c SS |
4532 | fh->fBigendian, |
4533 | debug_info->ss + fh->issBase + sh.iss); | |
4534 | add_pending (fh, esh, *tpp); | |
4535 | break; | |
4536 | ||
4537 | default: | |
23136709 | 4538 | complaint (&symfile_complaints, |
e2e0b3e5 | 4539 | _("illegal bt %d in forward typedef for %s"), tir.bt, |
23136709 | 4540 | sym_name); |
c906108c | 4541 | *tpp = init_type (type_code, 0, 0, (char *) NULL, |
dd707e8e | 4542 | mdebugread_objfile); |
c906108c SS |
4543 | break; |
4544 | } | |
4545 | return result; | |
4546 | } | |
4547 | else if (sh.st == stTypedef) | |
4548 | { | |
025bb325 | 4549 | /* Parse the type for a normal typedef. This might recursively call |
c906108c SS |
4550 | cross_ref till we get a non typedef'ed type. |
4551 | FIXME: This is not correct behaviour, but gdb currently | |
025bb325 | 4552 | cannot handle typedefs without type copying. But type copying is |
c906108c SS |
4553 | impossible as we might have mutual forward references between |
4554 | two files and the copied type would not get filled in when | |
4555 | we later parse its definition. */ | |
4556 | *tpp = parse_type (xref_fd, | |
4557 | debug_info->external_aux + fh->iauxBase, | |
4558 | sh.index, | |
c5aa993b | 4559 | (int *) NULL, |
c906108c SS |
4560 | fh->fBigendian, |
4561 | debug_info->ss + fh->issBase + sh.iss); | |
4562 | } | |
4563 | else | |
4564 | { | |
4565 | /* Cross reference to a struct/union/enum which is defined | |
4566 | in another file in the same compilation unit but that file | |
4567 | has not been parsed yet. | |
4568 | Initialize the type only, it will be filled in when | |
4569 | it's definition is parsed. */ | |
dd707e8e | 4570 | *tpp = init_type (type_code, 0, 0, (char *) NULL, mdebugread_objfile); |
c906108c SS |
4571 | } |
4572 | add_pending (fh, esh, *tpp); | |
4573 | } | |
4574 | ||
025bb325 | 4575 | /* We used one auxent normally, two if we got a "next one" rf. */ |
c906108c SS |
4576 | return result; |
4577 | } | |
4578 | ||
4579 | ||
4580 | /* Quick&dirty lookup procedure, to avoid the MI ones that require | |
025bb325 | 4581 | keeping the symtab sorted. */ |
c906108c SS |
4582 | |
4583 | static struct symbol * | |
3977b71f | 4584 | mylookup_symbol (char *name, const struct block *block, |
fe978cb0 | 4585 | domain_enum domain, enum address_class theclass) |
c906108c | 4586 | { |
8157b174 | 4587 | struct block_iterator iter; |
de4f826b | 4588 | int inc; |
e88c90f2 | 4589 | struct symbol *sym; |
c906108c | 4590 | |
c906108c | 4591 | inc = name[0]; |
de4f826b | 4592 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
c906108c | 4593 | { |
3567439c | 4594 | if (SYMBOL_LINKAGE_NAME (sym)[0] == inc |
176620f1 | 4595 | && SYMBOL_DOMAIN (sym) == domain |
fe978cb0 | 4596 | && SYMBOL_CLASS (sym) == theclass |
3567439c | 4597 | && strcmp (SYMBOL_LINKAGE_NAME (sym), name) == 0) |
c906108c | 4598 | return sym; |
c906108c | 4599 | } |
e88c90f2 | 4600 | |
c906108c SS |
4601 | block = BLOCK_SUPERBLOCK (block); |
4602 | if (block) | |
fe978cb0 | 4603 | return mylookup_symbol (name, block, domain, theclass); |
c906108c SS |
4604 | return 0; |
4605 | } | |
4606 | ||
4607 | ||
de4f826b | 4608 | /* Add a new symbol S to a block B. */ |
c906108c SS |
4609 | |
4610 | static void | |
c7efd0b9 | 4611 | add_symbol (struct symbol *s, struct symtab *symtab, struct block *b) |
c906108c | 4612 | { |
08be3fe3 | 4613 | symbol_set_symtab (s, symtab); |
de4f826b | 4614 | dict_add_symbol (BLOCK_DICT (b), s); |
c906108c SS |
4615 | } |
4616 | ||
025bb325 | 4617 | /* Add a new block B to a symtab S. */ |
c906108c SS |
4618 | |
4619 | static void | |
fba45db2 | 4620 | add_block (struct block *b, struct symtab *s) |
c906108c | 4621 | { |
346d1dfe TT |
4622 | /* Cast away "const", but that's ok because we're building the |
4623 | symtab and blockvector here. */ | |
439247b6 | 4624 | struct blockvector *bv = (struct blockvector *) SYMTAB_BLOCKVECTOR (s); |
c906108c | 4625 | |
12b9c64f | 4626 | bv = (struct blockvector *) xrealloc ((void *) bv, |
c906108c SS |
4627 | (sizeof (struct blockvector) |
4628 | + BLOCKVECTOR_NBLOCKS (bv) | |
4629 | * sizeof (bv->block))); | |
439247b6 DE |
4630 | if (bv != SYMTAB_BLOCKVECTOR (s)) |
4631 | SYMTAB_BLOCKVECTOR (s) = bv; | |
c906108c SS |
4632 | |
4633 | BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b; | |
4634 | } | |
4635 | ||
4636 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. | |
4637 | MIPS' linenumber encoding might need more than one byte | |
4638 | to describe it, LAST is used to detect these continuation lines. | |
4639 | ||
4640 | Combining lines with the same line number seems like a bad idea. | |
4641 | E.g: There could be a line number entry with the same line number after the | |
4642 | prologue and GDB should not ignore it (this is a better way to find | |
4643 | a prologue than mips_skip_prologue). | |
4644 | But due to the compressed line table format there are line number entries | |
4645 | for the same line which are needed to bridge the gap to the next | |
025bb325 | 4646 | line number entry. These entries have a bogus address info with them |
c906108c SS |
4647 | and we are unable to tell them from intended duplicate line number |
4648 | entries. | |
4649 | This is another reason why -ggdb debugging format is preferable. */ | |
4650 | ||
4651 | static int | |
fba45db2 | 4652 | add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last) |
c906108c SS |
4653 | { |
4654 | /* DEC c89 sometimes produces zero linenos which confuse gdb. | |
025bb325 | 4655 | Change them to something sensible. */ |
c906108c SS |
4656 | if (lineno == 0) |
4657 | lineno = 1; | |
4658 | if (last == 0) | |
025bb325 | 4659 | last = -2; /* Make sure we record first line. */ |
c906108c | 4660 | |
025bb325 | 4661 | if (last == lineno) /* Skip continuation lines. */ |
c906108c SS |
4662 | return lineno; |
4663 | ||
4664 | lt->item[lt->nitems].line = lineno; | |
4665 | lt->item[lt->nitems++].pc = adr << 2; | |
4666 | return lineno; | |
4667 | } | |
4668 | \f | |
025bb325 | 4669 | /* Sorting and reordering procedures. */ |
c906108c | 4670 | |
025bb325 | 4671 | /* Blocks with a smaller low bound should come first. */ |
c906108c SS |
4672 | |
4673 | static int | |
12b9c64f | 4674 | compare_blocks (const void *arg1, const void *arg2) |
c906108c | 4675 | { |
887432a5 | 4676 | LONGEST addr_diff; |
c906108c SS |
4677 | struct block **b1 = (struct block **) arg1; |
4678 | struct block **b2 = (struct block **) arg2; | |
4679 | ||
4680 | addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2))); | |
4681 | if (addr_diff == 0) | |
4682 | return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1))); | |
4683 | return addr_diff; | |
4684 | } | |
4685 | ||
4686 | /* Sort the blocks of a symtab S. | |
4687 | Reorder the blocks in the blockvector by code-address, | |
025bb325 | 4688 | as required by some MI search routines. */ |
c906108c SS |
4689 | |
4690 | static void | |
fba45db2 | 4691 | sort_blocks (struct symtab *s) |
c906108c | 4692 | { |
346d1dfe TT |
4693 | /* We have to cast away const here, but this is ok because we're |
4694 | constructing the blockvector in this code. */ | |
439247b6 | 4695 | struct blockvector *bv = (struct blockvector *) SYMTAB_BLOCKVECTOR (s); |
c906108c | 4696 | |
49323895 | 4697 | if (BLOCKVECTOR_NBLOCKS (bv) <= FIRST_LOCAL_BLOCK) |
c906108c SS |
4698 | { |
4699 | /* Cosmetic */ | |
4700 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0) | |
4701 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0; | |
4702 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0) | |
4703 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0; | |
4704 | return; | |
4705 | } | |
4706 | /* | |
4707 | * This is very unfortunate: normally all functions are compiled in | |
4708 | * the order they are found, but if the file is compiled -O3 things | |
4709 | * are very different. It would be nice to find a reliable test | |
4710 | * to detect -O3 images in advance. | |
4711 | */ | |
49323895 | 4712 | if (BLOCKVECTOR_NBLOCKS (bv) > FIRST_LOCAL_BLOCK + 1) |
c906108c SS |
4713 | qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK), |
4714 | BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK, | |
4715 | sizeof (struct block *), | |
4716 | compare_blocks); | |
4717 | ||
4718 | { | |
aa1ee363 AC |
4719 | CORE_ADDR high = 0; |
4720 | int i, j = BLOCKVECTOR_NBLOCKS (bv); | |
c906108c SS |
4721 | |
4722 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) | |
4723 | if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i))) | |
4724 | high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)); | |
4725 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high; | |
4726 | } | |
4727 | ||
4728 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = | |
4729 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK)); | |
4730 | ||
4731 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4732 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4733 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4734 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4735 | } | |
4736 | \f | |
4737 | ||
025bb325 | 4738 | /* Constructor/restructor/destructor procedures. */ |
c906108c | 4739 | |
de4f826b | 4740 | /* Allocate a new symtab for NAME. Needs an estimate of how many |
025bb325 | 4741 | linenumbers MAXLINES we'll put in it. */ |
c906108c | 4742 | |
43f3e411 | 4743 | static struct compunit_symtab * |
72b9f47f | 4744 | new_symtab (const char *name, int maxlines, struct objfile *objfile) |
c906108c | 4745 | { |
43f3e411 DE |
4746 | struct compunit_symtab *cust = allocate_compunit_symtab (objfile, name); |
4747 | struct symtab *symtab; | |
346d1dfe | 4748 | struct blockvector *bv; |
c906108c | 4749 | |
43f3e411 DE |
4750 | add_compunit_symtab_to_objfile (cust); |
4751 | symtab = allocate_symtab (cust, name); | |
4752 | ||
4753 | SYMTAB_LINETABLE (symtab) = new_linetable (maxlines); | |
c906108c | 4754 | |
025bb325 | 4755 | /* All symtabs must have at least two blocks. */ |
346d1dfe TT |
4756 | bv = new_bvect (2); |
4757 | BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = new_block (NON_FUNCTION_BLOCK); | |
4758 | BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = new_block (NON_FUNCTION_BLOCK); | |
4759 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4760 | BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
43f3e411 | 4761 | COMPUNIT_BLOCKVECTOR (cust) = bv; |
c906108c | 4762 | |
43f3e411 DE |
4763 | COMPUNIT_DEBUGFORMAT (cust) = "ECOFF"; |
4764 | return cust; | |
c906108c SS |
4765 | } |
4766 | ||
025bb325 | 4767 | /* Allocate a new partial_symtab NAME. */ |
c906108c SS |
4768 | |
4769 | static struct partial_symtab * | |
fba45db2 | 4770 | new_psymtab (char *name, struct objfile *objfile) |
c906108c SS |
4771 | { |
4772 | struct partial_symtab *psymtab; | |
4773 | ||
4774 | psymtab = allocate_psymtab (name, objfile); | |
c906108c | 4775 | |
025bb325 | 4776 | /* Keep a backpointer to the file's symbols. */ |
c906108c | 4777 | |
e38df1d0 TT |
4778 | psymtab->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
4779 | sizeof (struct symloc)); | |
12b9c64f | 4780 | memset (psymtab->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
4781 | CUR_BFD (psymtab) = cur_bfd; |
4782 | DEBUG_SWAP (psymtab) = debug_swap; | |
4783 | DEBUG_INFO (psymtab) = debug_info; | |
4784 | PENDING_LIST (psymtab) = pending_list; | |
4785 | ||
025bb325 | 4786 | /* The way to turn this into a symtab is to call... */ |
257e7a09 | 4787 | psymtab->read_symtab = mdebug_read_symtab; |
c906108c SS |
4788 | return (psymtab); |
4789 | } | |
4790 | ||
4791 | ||
4792 | /* Allocate a linetable array of the given SIZE. Since the struct | |
4793 | already includes one item, we subtract one when calculating the | |
4794 | proper size to allocate. */ | |
4795 | ||
4796 | static struct linetable * | |
fba45db2 | 4797 | new_linetable (int size) |
c906108c SS |
4798 | { |
4799 | struct linetable *l; | |
4800 | ||
30cc903e TT |
4801 | if (size > 1) |
4802 | --size; | |
4803 | size = size * sizeof (l->item) + sizeof (struct linetable); | |
c906108c SS |
4804 | l = (struct linetable *) xmalloc (size); |
4805 | l->nitems = 0; | |
4806 | return l; | |
4807 | } | |
4808 | ||
025bb325 | 4809 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, |
c906108c SS |
4810 | I am not so sure about the 3.4 ones. |
4811 | ||
4812 | Since the struct linetable already includes one item, we subtract one when | |
4813 | calculating the proper size to allocate. */ | |
4814 | ||
4815 | static struct linetable * | |
fba45db2 | 4816 | shrink_linetable (struct linetable *lt) |
c906108c | 4817 | { |
12b9c64f | 4818 | return (struct linetable *) xrealloc ((void *) lt, |
c906108c SS |
4819 | (sizeof (struct linetable) |
4820 | + ((lt->nitems - 1) | |
4821 | * sizeof (lt->item)))); | |
4822 | } | |
4823 | ||
025bb325 | 4824 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ |
c906108c SS |
4825 | |
4826 | static struct blockvector * | |
fba45db2 | 4827 | new_bvect (int nblocks) |
c906108c SS |
4828 | { |
4829 | struct blockvector *bv; | |
4830 | int size; | |
4831 | ||
4832 | size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); | |
4833 | bv = (struct blockvector *) xzalloc (size); | |
4834 | ||
4835 | BLOCKVECTOR_NBLOCKS (bv) = nblocks; | |
4836 | ||
4837 | return bv; | |
4838 | } | |
4839 | ||
de4f826b DC |
4840 | /* Allocate and zero a new block, and set its BLOCK_DICT. If function |
4841 | is non-zero, assume the block is associated to a function, and make | |
4842 | sure that the symbols are stored linearly; otherwise, store them | |
4843 | hashed. */ | |
c906108c SS |
4844 | |
4845 | static struct block * | |
de4f826b | 4846 | new_block (enum block_type type) |
c906108c | 4847 | { |
a1632d59 DC |
4848 | /* FIXME: carlton/2003-09-11: This should use allocate_block to |
4849 | allocate the block. Which, in turn, suggests that the block | |
4850 | should be allocated on an obstack. */ | |
8d749320 | 4851 | struct block *retval = XCNEW (struct block); |
c906108c | 4852 | |
de4f826b DC |
4853 | if (type == FUNCTION_BLOCK) |
4854 | BLOCK_DICT (retval) = dict_create_linear_expandable (); | |
4855 | else | |
4856 | BLOCK_DICT (retval) = dict_create_hashed_expandable (); | |
c906108c | 4857 | |
de4f826b | 4858 | return retval; |
c906108c SS |
4859 | } |
4860 | ||
025bb325 | 4861 | /* Create a new symbol with printname NAME. */ |
c906108c SS |
4862 | |
4863 | static struct symbol * | |
fba45db2 | 4864 | new_symbol (char *name) |
c906108c | 4865 | { |
e623cf5d | 4866 | struct symbol *s = allocate_symbol (mdebugread_objfile); |
c906108c | 4867 | |
f85f34ed TT |
4868 | SYMBOL_SET_LANGUAGE (s, psymtab_language, |
4869 | &mdebugread_objfile->objfile_obstack); | |
dd707e8e | 4870 | SYMBOL_SET_NAMES (s, name, strlen (name), 1, mdebugread_objfile); |
c906108c SS |
4871 | return s; |
4872 | } | |
4873 | ||
025bb325 | 4874 | /* Create a new type with printname NAME. */ |
c906108c SS |
4875 | |
4876 | static struct type * | |
fba45db2 | 4877 | new_type (char *name) |
c906108c SS |
4878 | { |
4879 | struct type *t; | |
4880 | ||
dd707e8e | 4881 | t = alloc_type (mdebugread_objfile); |
c906108c | 4882 | TYPE_NAME (t) = name; |
b4ba55a1 | 4883 | INIT_CPLUS_SPECIFIC (t); |
c906108c SS |
4884 | return t; |
4885 | } | |
4886 | \f | |
4887 | /* Read ECOFF debugging information from a BFD section. This is | |
4888 | called from elfread.c. It parses the section into a | |
4889 | ecoff_debug_info struct, and then lets the rest of the file handle | |
4890 | it as normal. */ | |
4891 | ||
4892 | void | |
fba45db2 KB |
4893 | elfmdebug_build_psymtabs (struct objfile *objfile, |
4894 | const struct ecoff_debug_swap *swap, asection *sec) | |
c906108c SS |
4895 | { |
4896 | bfd *abfd = objfile->obfd; | |
4897 | struct ecoff_debug_info *info; | |
7134143f DJ |
4898 | struct cleanup *back_to; |
4899 | ||
4900 | /* FIXME: It's not clear whether we should be getting minimal symbol | |
4901 | information from .mdebug in an ELF file, or whether we will. | |
4902 | Re-initialize the minimal symbol reader in case we do. */ | |
4903 | ||
4904 | init_minimal_symbol_collection (); | |
4905 | back_to = make_cleanup_discard_minimal_symbols (); | |
c906108c SS |
4906 | |
4907 | info = ((struct ecoff_debug_info *) | |
8b92e4d5 | 4908 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
4909 | sizeof (struct ecoff_debug_info))); |
4910 | ||
4911 | if (!(*swap->read_debug_info) (abfd, sec, info)) | |
8a3fe4f8 | 4912 | error (_("Error reading ECOFF debugging information: %s"), |
c906108c SS |
4913 | bfd_errmsg (bfd_get_error ())); |
4914 | ||
d4f3574e | 4915 | mdebug_build_psymtabs (objfile, swap, info); |
7134143f DJ |
4916 | |
4917 | install_minimal_symbols (objfile); | |
4918 | do_cleanups (back_to); | |
c906108c | 4919 | } |
c906108c SS |
4920 | |
4921 | void | |
fba45db2 | 4922 | _initialize_mdebugread (void) |
c906108c | 4923 | { |
0a9d309a | 4924 | basic_type_data = register_objfile_data (); |
f1e6e072 TT |
4925 | |
4926 | mdebug_register_index | |
4927 | = register_symbol_register_impl (LOC_REGISTER, &mdebug_register_funcs); | |
4928 | mdebug_regparm_index | |
4929 | = register_symbol_register_impl (LOC_REGPARM_ADDR, &mdebug_register_funcs); | |
c906108c | 4930 | } |