Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Read a symbol table in ECOFF format (Third-Eye). |
ee300cd4 | 2 | |
ecd75fc8 | 3 | Copyright (C) 1986-2014 Free Software Foundation, Inc. |
ee300cd4 | 4 | |
c906108c SS |
5 | Original version contributed by Alessandro Forin (af@cs.cmu.edu) at |
6 | CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor | |
7 | at Cygnus Support. | |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | /* This module provides the function mdebug_build_psymtabs. It reads | |
25 | ECOFF debugging information into partial symbol tables. The | |
26 | debugging information is read from two structures. A struct | |
27 | ecoff_debug_swap includes the sizes of each ECOFF structure and | |
28 | swapping routines; these are fixed for a particular target. A | |
29 | struct ecoff_debug_info points to the debugging information for a | |
30 | particular object file. | |
31 | ||
32 | ECOFF symbol tables are mostly written in the byte order of the | |
33 | target machine. However, one section of the table (the auxiliary | |
34 | symbol information) is written in the host byte order. There is a | |
35 | bit in the other symbol info which describes which host byte order | |
36 | was used. ECOFF thereby takes the trophy from Intel `b.out' for | |
37 | the most brain-dead adaptation of a file format to byte order. | |
38 | ||
39 | This module can read all four of the known byte-order combinations, | |
40 | on any type of host. */ | |
41 | ||
42 | #include "defs.h" | |
43 | #include "symtab.h" | |
44 | #include "gdbtypes.h" | |
45 | #include "gdbcore.h" | |
0ba1096a | 46 | #include "filenames.h" |
c906108c | 47 | #include "objfiles.h" |
04ea0df1 | 48 | #include "gdb_obstack.h" |
c906108c SS |
49 | #include "buildsym.h" |
50 | #include "stabsread.h" | |
51 | #include "complaints.h" | |
52 | #include "demangle.h" | |
50f182aa | 53 | #include "gdb-demangle.h" |
261397f8 | 54 | #include "gdb_assert.h" |
fe898f56 | 55 | #include "block.h" |
de4f826b | 56 | #include "dictionary.h" |
5b123146 | 57 | #include "mdebugread.h" |
53ce3c39 | 58 | #include <sys/stat.h> |
0e9f083f | 59 | #include <string.h> |
ccefe4c4 | 60 | #include "psympriv.h" |
05cba821 | 61 | #include "source.h" |
c906108c | 62 | |
c906108c SS |
63 | #include "bfd.h" |
64 | ||
025bb325 | 65 | #include "coff/ecoff.h" /* COFF-like aspects of ecoff files. */ |
c906108c SS |
66 | |
67 | #include "libaout.h" /* Private BFD a.out information. */ | |
68 | #include "aout/aout64.h" | |
025bb325 | 69 | #include "aout/stab_gnu.h" /* STABS information. */ |
c906108c SS |
70 | |
71 | #include "expression.h" | |
c906108c | 72 | |
a14ed312 | 73 | extern void _initialize_mdebugread (void); |
c906108c | 74 | |
025bb325 | 75 | /* Provide a way to test if we have both ECOFF and ELF symbol tables. |
c906108c SS |
76 | We use this define in order to know whether we should override a |
77 | symbol's ECOFF section with its ELF section. This is necessary in | |
78 | case the symbol's ELF section could not be represented in ECOFF. */ | |
79 | #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
80 | && bfd_get_section_by_name (bfd, ".mdebug") != NULL) | |
91a81f69 TT |
81 | |
82 | /* The objfile we are currently reading. */ | |
83 | ||
dd707e8e | 84 | static struct objfile *mdebugread_objfile; |
91a81f69 | 85 | |
c906108c | 86 | \f |
c5aa993b | 87 | |
c906108c SS |
88 | /* We put a pointer to this structure in the read_symtab_private field |
89 | of the psymtab. */ | |
90 | ||
91 | struct symloc | |
c5aa993b JM |
92 | { |
93 | /* Index of the FDR that this psymtab represents. */ | |
94 | int fdr_idx; | |
95 | /* The BFD that the psymtab was created from. */ | |
96 | bfd *cur_bfd; | |
97 | const struct ecoff_debug_swap *debug_swap; | |
98 | struct ecoff_debug_info *debug_info; | |
99 | struct mdebug_pending **pending_list; | |
100 | /* Pointer to external symbols for this file. */ | |
101 | EXTR *extern_tab; | |
102 | /* Size of extern_tab. */ | |
103 | int extern_count; | |
104 | enum language pst_language; | |
105 | }; | |
c906108c SS |
106 | |
107 | #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private) | |
108 | #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx) | |
109 | #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd) | |
110 | #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap) | |
111 | #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info) | |
112 | #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list) | |
113 | ||
114 | #define SC_IS_TEXT(sc) ((sc) == scText \ | |
115 | || (sc) == scRConst \ | |
116 | || (sc) == scInit \ | |
117 | || (sc) == scFini) | |
118 | #define SC_IS_DATA(sc) ((sc) == scData \ | |
119 | || (sc) == scSData \ | |
120 | || (sc) == scRData \ | |
121 | || (sc) == scPData \ | |
122 | || (sc) == scXData) | |
123 | #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon) | |
0e931cf0 JB |
124 | #define SC_IS_BSS(sc) ((sc) == scBss) |
125 | #define SC_IS_SBSS(sc) ((sc) == scSBss) | |
c906108c | 126 | #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined) |
c906108c | 127 | \f |
025bb325 | 128 | /* Various complaints about symbol reading that don't abort the process. */ |
23136709 KB |
129 | static void |
130 | index_complaint (const char *arg1) | |
131 | { | |
e2e0b3e5 | 132 | complaint (&symfile_complaints, _("bad aux index at symbol %s"), arg1); |
23136709 | 133 | } |
c906108c | 134 | |
23136709 KB |
135 | static void |
136 | unknown_ext_complaint (const char *arg1) | |
137 | { | |
e2e0b3e5 | 138 | complaint (&symfile_complaints, _("unknown external symbol %s"), arg1); |
23136709 | 139 | } |
c906108c | 140 | |
23136709 KB |
141 | static void |
142 | basic_type_complaint (int arg1, const char *arg2) | |
143 | { | |
e2e0b3e5 | 144 | complaint (&symfile_complaints, _("cannot map ECOFF basic type 0x%x for %s"), |
23136709 KB |
145 | arg1, arg2); |
146 | } | |
c906108c | 147 | |
23136709 KB |
148 | static void |
149 | bad_tag_guess_complaint (const char *arg1) | |
150 | { | |
3e43a32a MS |
151 | complaint (&symfile_complaints, |
152 | _("guessed tag type of %s incorrectly"), arg1); | |
23136709 | 153 | } |
c906108c | 154 | |
23136709 KB |
155 | static void |
156 | bad_rfd_entry_complaint (const char *arg1, int arg2, int arg3) | |
157 | { | |
e2e0b3e5 | 158 | complaint (&symfile_complaints, _("bad rfd entry for %s: file %d, index %d"), |
23136709 KB |
159 | arg1, arg2, arg3); |
160 | } | |
c906108c | 161 | |
23136709 KB |
162 | static void |
163 | unexpected_type_code_complaint (const char *arg1) | |
164 | { | |
e2e0b3e5 | 165 | complaint (&symfile_complaints, _("unexpected type code for %s"), arg1); |
23136709 | 166 | } |
c906108c | 167 | |
025bb325 | 168 | /* Macros and extra defs. */ |
c906108c | 169 | |
025bb325 | 170 | /* Puns: hard to find whether -g was used and how. */ |
c906108c SS |
171 | |
172 | #define MIN_GLEVEL GLEVEL_0 | |
173 | #define compare_glevel(a,b) \ | |
174 | (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \ | |
175 | ((b) == GLEVEL_3) ? -1 : (int)((b) - (a))) | |
176 | \f | |
025bb325 | 177 | /* Things that really are local to this module. */ |
c906108c | 178 | |
025bb325 | 179 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
180 | |
181 | static enum language psymtab_language = language_unknown; | |
182 | ||
183 | /* Current BFD. */ | |
184 | ||
185 | static bfd *cur_bfd; | |
186 | ||
187 | /* How to parse debugging information for CUR_BFD. */ | |
188 | ||
189 | static const struct ecoff_debug_swap *debug_swap; | |
190 | ||
191 | /* Pointers to debugging information for CUR_BFD. */ | |
192 | ||
193 | static struct ecoff_debug_info *debug_info; | |
194 | ||
025bb325 | 195 | /* Pointer to current file decriptor record, and its index. */ |
c906108c SS |
196 | |
197 | static FDR *cur_fdr; | |
198 | static int cur_fd; | |
199 | ||
025bb325 | 200 | /* Index of current symbol. */ |
c906108c SS |
201 | |
202 | static int cur_sdx; | |
203 | ||
204 | /* Note how much "debuggable" this image is. We would like | |
025bb325 | 205 | to see at least one FDR with full symbols. */ |
c906108c SS |
206 | |
207 | static int max_gdbinfo; | |
208 | static int max_glevel; | |
209 | ||
025bb325 | 210 | /* When examining .o files, report on undefined symbols. */ |
c906108c SS |
211 | |
212 | static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs; | |
213 | ||
214 | /* Pseudo symbol to use when putting stabs into the symbol table. */ | |
215 | ||
216 | static char stabs_symbol[] = STABS_SYMBOL; | |
217 | ||
c906108c SS |
218 | /* Nonzero if we have seen ecoff debugging info for a file. */ |
219 | ||
220 | static int found_ecoff_debugging_info; | |
221 | ||
025bb325 | 222 | /* Forward declarations. */ |
c906108c | 223 | |
12b9c64f AO |
224 | static int upgrade_type (int, struct type **, int, union aux_ext *, |
225 | int, char *); | |
c906108c | 226 | |
a14ed312 | 227 | static void parse_partial_symbols (struct objfile *); |
c906108c | 228 | |
a14ed312 | 229 | static int has_opaque_xref (FDR *, SYMR *); |
c906108c | 230 | |
12b9c64f AO |
231 | static int cross_ref (int, union aux_ext *, struct type **, enum type_code, |
232 | char **, int, char *); | |
c906108c | 233 | |
a14ed312 | 234 | static struct symbol *new_symbol (char *); |
c906108c | 235 | |
a14ed312 | 236 | static struct type *new_type (char *); |
c906108c | 237 | |
de4f826b | 238 | enum block_type { FUNCTION_BLOCK, NON_FUNCTION_BLOCK }; |
c906108c | 239 | |
de4f826b DC |
240 | static struct block *new_block (enum block_type); |
241 | ||
72b9f47f | 242 | static struct symtab *new_symtab (const char *, int, struct objfile *); |
c906108c | 243 | |
a14ed312 | 244 | static struct linetable *new_linetable (int); |
c906108c | 245 | |
a14ed312 | 246 | static struct blockvector *new_bvect (int); |
c906108c | 247 | |
a14ed312 KB |
248 | static struct type *parse_type (int, union aux_ext *, unsigned int, int *, |
249 | int, char *); | |
c906108c | 250 | |
176620f1 | 251 | static struct symbol *mylookup_symbol (char *, struct block *, domain_enum, |
a14ed312 | 252 | enum address_class); |
c906108c | 253 | |
a14ed312 | 254 | static void sort_blocks (struct symtab *); |
c906108c | 255 | |
a14ed312 | 256 | static struct partial_symtab *new_psymtab (char *, struct objfile *); |
c906108c | 257 | |
5c80ed9d TT |
258 | static void psymtab_to_symtab_1 (struct objfile *objfile, |
259 | struct partial_symtab *, const char *); | |
c906108c | 260 | |
a14ed312 | 261 | static void add_block (struct block *, struct symtab *); |
c906108c | 262 | |
c7efd0b9 | 263 | static void add_symbol (struct symbol *, struct symtab *, struct block *); |
c906108c | 264 | |
a14ed312 | 265 | static int add_line (struct linetable *, int, CORE_ADDR, int); |
c906108c | 266 | |
a14ed312 | 267 | static struct linetable *shrink_linetable (struct linetable *); |
c906108c | 268 | |
12b9c64f AO |
269 | static void handle_psymbol_enumerators (struct objfile *, FDR *, int, |
270 | CORE_ADDR); | |
c906108c | 271 | |
a14ed312 | 272 | static char *mdebug_next_symbol_text (struct objfile *); |
c906108c | 273 | \f |
257e7a09 YQ |
274 | /* Exported procedure: Builds a symtab from the partial symtab SELF. |
275 | Restores the environment in effect when SELF was created, delegates | |
c906108c | 276 | most of the work to an ancillary procedure, and sorts |
257e7a09 | 277 | and reorders the symtab list at the end. SELF is not NULL. */ |
c906108c SS |
278 | |
279 | static void | |
257e7a09 | 280 | mdebug_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 281 | { |
c906108c SS |
282 | if (info_verbose) |
283 | { | |
257e7a09 | 284 | printf_filtered (_("Reading in symbols for %s..."), self->filename); |
c906108c SS |
285 | gdb_flush (gdb_stdout); |
286 | } | |
287 | ||
288 | next_symbol_text_func = mdebug_next_symbol_text; | |
289 | ||
257e7a09 | 290 | psymtab_to_symtab_1 (objfile, self, self->filename); |
c906108c SS |
291 | |
292 | /* Match with global symbols. This only needs to be done once, | |
025bb325 | 293 | after all of the symtabs and dependencies have been read in. */ |
5c80ed9d | 294 | scan_file_globals (objfile); |
c906108c SS |
295 | |
296 | if (info_verbose) | |
a3f17187 | 297 | printf_filtered (_("done.\n")); |
c906108c SS |
298 | } |
299 | \f | |
025bb325 | 300 | /* File-level interface functions. */ |
c906108c | 301 | |
025bb325 | 302 | /* Find a file descriptor given its index RF relative to a file CF. */ |
c906108c SS |
303 | |
304 | static FDR * | |
fba45db2 | 305 | get_rfd (int cf, int rf) |
c906108c SS |
306 | { |
307 | FDR *fdrs; | |
52f0bd74 | 308 | FDR *f; |
c906108c SS |
309 | RFDT rfd; |
310 | ||
311 | fdrs = debug_info->fdr; | |
312 | f = fdrs + cf; | |
025bb325 | 313 | /* Object files do not have the RFD table, all refs are absolute. */ |
c906108c SS |
314 | if (f->rfdBase == 0) |
315 | return fdrs + rf; | |
316 | (*debug_swap->swap_rfd_in) (cur_bfd, | |
c5aa993b JM |
317 | ((char *) debug_info->external_rfd |
318 | + ((f->rfdBase + rf) | |
319 | * debug_swap->external_rfd_size)), | |
320 | &rfd); | |
c906108c SS |
321 | return fdrs + rfd; |
322 | } | |
323 | ||
025bb325 | 324 | /* Return a safer print NAME for a file descriptor. */ |
c906108c SS |
325 | |
326 | static char * | |
fba45db2 | 327 | fdr_name (FDR *f) |
c906108c SS |
328 | { |
329 | if (f->rss == -1) | |
330 | return "<stripped file>"; | |
331 | if (f->rss == 0) | |
332 | return "<NFY>"; | |
333 | return debug_info->ss + f->issBase + f->rss; | |
334 | } | |
335 | ||
336 | ||
337 | /* Read in and parse the symtab of the file OBJFILE. Symbols from | |
338 | different sections are relocated via the SECTION_OFFSETS. */ | |
339 | ||
340 | void | |
fba45db2 KB |
341 | mdebug_build_psymtabs (struct objfile *objfile, |
342 | const struct ecoff_debug_swap *swap, | |
343 | struct ecoff_debug_info *info) | |
c906108c SS |
344 | { |
345 | cur_bfd = objfile->obfd; | |
346 | debug_swap = swap; | |
347 | debug_info = info; | |
348 | ||
d3d55eeb EZ |
349 | stabsread_new_init (); |
350 | buildsym_new_init (); | |
351 | free_header_files (); | |
352 | init_header_files (); | |
353 | ||
c906108c SS |
354 | /* Make sure all the FDR information is swapped in. */ |
355 | if (info->fdr == (FDR *) NULL) | |
356 | { | |
357 | char *fdr_src; | |
358 | char *fdr_end; | |
359 | FDR *fdr_ptr; | |
360 | ||
8b92e4d5 | 361 | info->fdr = (FDR *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
362 | (info->symbolic_header.ifdMax |
363 | * sizeof (FDR))); | |
364 | fdr_src = info->external_fdr; | |
365 | fdr_end = (fdr_src | |
366 | + info->symbolic_header.ifdMax * swap->external_fdr_size); | |
367 | fdr_ptr = info->fdr; | |
368 | for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++) | |
369 | (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr); | |
370 | } | |
371 | ||
d4f3574e | 372 | parse_partial_symbols (objfile); |
c906108c SS |
373 | |
374 | #if 0 | |
375 | /* Check to make sure file was compiled with -g. If not, warn the | |
376 | user of this limitation. */ | |
377 | if (compare_glevel (max_glevel, GLEVEL_2) < 0) | |
378 | { | |
379 | if (max_gdbinfo == 0) | |
3e43a32a MS |
380 | printf_unfiltered (_("\n%s not compiled with -g, " |
381 | "debugging support is limited.\n"), | |
c5aa993b | 382 | objfile->name); |
3e43a32a MS |
383 | printf_unfiltered (_("You should compile with -g2 or " |
384 | "-g3 for best debugging support.\n")); | |
c906108c SS |
385 | gdb_flush (gdb_stdout); |
386 | } | |
387 | #endif | |
388 | } | |
389 | \f | |
390 | /* Local utilities */ | |
391 | ||
025bb325 | 392 | /* Map of FDR indexes to partial symtabs. */ |
c906108c SS |
393 | |
394 | struct pst_map | |
395 | { | |
396 | struct partial_symtab *pst; /* the psymtab proper */ | |
397 | long n_globals; /* exported globals (external symbols) */ | |
398 | long globals_offset; /* cumulative */ | |
399 | }; | |
400 | ||
401 | ||
402 | /* Utility stack, used to nest procedures and blocks properly. | |
403 | It is a doubly linked list, to avoid too many alloc/free. | |
404 | Since we might need it quite a few times it is NOT deallocated | |
025bb325 | 405 | after use. */ |
c906108c SS |
406 | |
407 | static struct parse_stack | |
c5aa993b JM |
408 | { |
409 | struct parse_stack *next, *prev; | |
025bb325 MS |
410 | struct symtab *cur_st; /* Current symtab. */ |
411 | struct block *cur_block; /* Block in it. */ | |
c5aa993b JM |
412 | |
413 | /* What are we parsing. stFile, or stBlock are for files and | |
414 | blocks. stProc or stStaticProc means we have seen the start of a | |
415 | procedure, but not the start of the block within in. When we see | |
416 | the start of that block, we change it to stNil, without pushing a | |
417 | new block, i.e. stNil means both a procedure and a block. */ | |
418 | ||
419 | int blocktype; | |
420 | ||
025bb325 MS |
421 | struct type *cur_type; /* Type we parse fields for. */ |
422 | int cur_field; /* Field number in cur_type. */ | |
423 | CORE_ADDR procadr; /* Start addres of this procedure. */ | |
424 | int numargs; /* Its argument count. */ | |
c5aa993b | 425 | } |
c906108c SS |
426 | |
427 | *top_stack; /* Top stack ptr */ | |
428 | ||
429 | ||
025bb325 | 430 | /* Enter a new lexical context. */ |
c906108c SS |
431 | |
432 | static void | |
fba45db2 | 433 | push_parse_stack (void) |
c906108c SS |
434 | { |
435 | struct parse_stack *new; | |
436 | ||
025bb325 | 437 | /* Reuse frames if possible. */ |
c906108c SS |
438 | if (top_stack && top_stack->prev) |
439 | new = top_stack->prev; | |
440 | else | |
441 | new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack)); | |
025bb325 | 442 | /* Initialize new frame with previous content. */ |
c906108c SS |
443 | if (top_stack) |
444 | { | |
aa1ee363 | 445 | struct parse_stack *prev = new->prev; |
c906108c SS |
446 | |
447 | *new = *top_stack; | |
448 | top_stack->prev = new; | |
449 | new->prev = prev; | |
450 | new->next = top_stack; | |
451 | } | |
452 | top_stack = new; | |
453 | } | |
454 | ||
025bb325 | 455 | /* Exit a lexical context. */ |
c906108c SS |
456 | |
457 | static void | |
fba45db2 | 458 | pop_parse_stack (void) |
c906108c SS |
459 | { |
460 | if (!top_stack) | |
461 | return; | |
462 | if (top_stack->next) | |
463 | top_stack = top_stack->next; | |
464 | } | |
465 | ||
466 | ||
467 | /* Cross-references might be to things we haven't looked at | |
468 | yet, e.g. type references. To avoid too many type | |
469 | duplications we keep a quick fixup table, an array | |
025bb325 | 470 | of lists of references indexed by file descriptor. */ |
c906108c SS |
471 | |
472 | struct mdebug_pending | |
473 | { | |
474 | struct mdebug_pending *next; /* link */ | |
475 | char *s; /* the unswapped symbol */ | |
476 | struct type *t; /* its partial type descriptor */ | |
477 | }; | |
478 | ||
479 | ||
b8b98ad1 TT |
480 | /* The pending information is kept for an entire object file. We |
481 | allocate the pending information table when we create the partial | |
482 | symbols, and we store a pointer to the single table in each | |
483 | psymtab. */ | |
c906108c SS |
484 | |
485 | static struct mdebug_pending **pending_list; | |
486 | ||
025bb325 | 487 | /* Check whether we already saw symbol SH in file FH. */ |
c906108c SS |
488 | |
489 | static struct mdebug_pending * | |
fba45db2 | 490 | is_pending_symbol (FDR *fh, char *sh) |
c906108c SS |
491 | { |
492 | int f_idx = fh - debug_info->fdr; | |
52f0bd74 | 493 | struct mdebug_pending *p; |
c906108c | 494 | |
025bb325 | 495 | /* Linear search is ok, list is typically no more than 10 deep. */ |
c906108c SS |
496 | for (p = pending_list[f_idx]; p; p = p->next) |
497 | if (p->s == sh) | |
498 | break; | |
499 | return p; | |
500 | } | |
501 | ||
025bb325 | 502 | /* Add a new symbol SH of type T. */ |
c906108c SS |
503 | |
504 | static void | |
fba45db2 | 505 | add_pending (FDR *fh, char *sh, struct type *t) |
c906108c SS |
506 | { |
507 | int f_idx = fh - debug_info->fdr; | |
508 | struct mdebug_pending *p = is_pending_symbol (fh, sh); | |
509 | ||
025bb325 | 510 | /* Make sure we do not make duplicates. */ |
c906108c SS |
511 | if (!p) |
512 | { | |
513 | p = ((struct mdebug_pending *) | |
dd707e8e | 514 | obstack_alloc (&mdebugread_objfile->objfile_obstack, |
c906108c SS |
515 | sizeof (struct mdebug_pending))); |
516 | p->s = sh; | |
517 | p->t = t; | |
518 | p->next = pending_list[f_idx]; | |
519 | pending_list[f_idx] = p; | |
520 | } | |
521 | } | |
522 | \f | |
523 | ||
025bb325 | 524 | /* Parsing Routines proper. */ |
c906108c | 525 | |
025bb325 | 526 | /* Parse a single symbol. Mostly just make up a GDB symbol for it. |
c906108c SS |
527 | For blocks, procedures and types we open a new lexical context. |
528 | This is basically just a big switch on the symbol's type. Argument | |
529 | AX is the base pointer of aux symbols for this file (fh->iauxBase). | |
530 | EXT_SH points to the unswapped symbol, which is needed for struct, | |
531 | union, etc., types; it is NULL for an EXTR. BIGEND says whether | |
532 | aux symbols are big-endian or little-endian. Return count of | |
533 | SYMR's handled (normally one). */ | |
534 | ||
768a979c UW |
535 | static int |
536 | mdebug_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
537 | { | |
538 | return gdbarch_ecoff_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
539 | } | |
540 | ||
541 | static const struct symbol_register_ops mdebug_register_funcs = { | |
542 | mdebug_reg_to_regnum | |
543 | }; | |
544 | ||
f1e6e072 TT |
545 | /* The "aclass" indices for computed symbols. */ |
546 | ||
547 | static int mdebug_register_index; | |
548 | static int mdebug_regparm_index; | |
549 | ||
c906108c | 550 | static int |
fba45db2 KB |
551 | parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend, |
552 | struct section_offsets *section_offsets, struct objfile *objfile) | |
c906108c | 553 | { |
5e2b427d | 554 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 555 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; |
12b9c64f | 556 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c SS |
557 | char *name; |
558 | struct symbol *s; | |
559 | struct block *b; | |
560 | struct mdebug_pending *pend; | |
561 | struct type *t; | |
562 | struct field *f; | |
563 | int count = 1; | |
564 | enum address_class class; | |
565 | TIR tir; | |
566 | long svalue = sh->value; | |
567 | int bitsize; | |
568 | ||
569 | if (ext_sh == (char *) NULL) | |
570 | name = debug_info->ssext + sh->iss; | |
571 | else | |
572 | name = debug_info->ss + cur_fdr->issBase + sh->iss; | |
573 | ||
574 | switch (sh->sc) | |
575 | { | |
576 | case scText: | |
577 | case scRConst: | |
578 | /* Do not relocate relative values. | |
c5aa993b JM |
579 | The value of a stEnd symbol is the displacement from the |
580 | corresponding start symbol value. | |
581 | The value of a stBlock symbol is the displacement from the | |
582 | procedure address. */ | |
c906108c | 583 | if (sh->st != stEnd && sh->st != stBlock) |
b8fbeb18 | 584 | sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
585 | break; |
586 | case scData: | |
587 | case scSData: | |
588 | case scRData: | |
589 | case scPData: | |
590 | case scXData: | |
b8fbeb18 | 591 | sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
592 | break; |
593 | case scBss: | |
594 | case scSBss: | |
b8fbeb18 | 595 | sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
596 | break; |
597 | } | |
598 | ||
599 | switch (sh->st) | |
600 | { | |
601 | case stNil: | |
602 | break; | |
603 | ||
025bb325 | 604 | case stGlobal: /* External symbol, goes into global block. */ |
c906108c SS |
605 | class = LOC_STATIC; |
606 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
607 | GLOBAL_BLOCK); | |
608 | s = new_symbol (name); | |
609 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
610 | goto data; | |
611 | ||
025bb325 | 612 | case stStatic: /* Static data, goes into current block. */ |
c906108c SS |
613 | class = LOC_STATIC; |
614 | b = top_stack->cur_block; | |
615 | s = new_symbol (name); | |
c5aa993b | 616 | if (SC_IS_COMMON (sh->sc)) |
c906108c SS |
617 | { |
618 | /* It is a FORTRAN common block. At least for SGI Fortran the | |
619 | address is not in the symbol; we need to fix it later in | |
620 | scan_file_globals. */ | |
3567439c | 621 | int bucket = hashname (SYMBOL_LINKAGE_NAME (s)); |
c906108c SS |
622 | SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket]; |
623 | global_sym_chain[bucket] = s; | |
624 | } | |
625 | else | |
626 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
627 | goto data; | |
628 | ||
025bb325 | 629 | case stLocal: /* Local variable, goes into current block. */ |
768a979c UW |
630 | b = top_stack->cur_block; |
631 | s = new_symbol (name); | |
632 | SYMBOL_VALUE (s) = svalue; | |
c906108c | 633 | if (sh->sc == scRegister) |
f1e6e072 | 634 | class = mdebug_register_index; |
c906108c SS |
635 | else |
636 | class = LOC_LOCAL; | |
c906108c | 637 | |
025bb325 | 638 | data: /* Common code for symbols describing data. */ |
176620f1 | 639 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
f1e6e072 | 640 | SYMBOL_ACLASS_INDEX (s) = class; |
c7efd0b9 | 641 | add_symbol (s, top_stack->cur_st, b); |
c906108c SS |
642 | |
643 | /* Type could be missing if file is compiled without debugging info. */ | |
c5aa993b | 644 | if (SC_IS_UNDEF (sh->sc) |
c906108c | 645 | || sh->sc == scNil || sh->index == indexNil) |
46bf5051 | 646 | SYMBOL_TYPE (s) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
647 | else |
648 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
025bb325 | 649 | /* Value of a data symbol is its memory address. */ |
c906108c SS |
650 | break; |
651 | ||
025bb325 MS |
652 | case stParam: /* Arg to procedure, goes into current |
653 | block. */ | |
c906108c SS |
654 | max_gdbinfo++; |
655 | found_ecoff_debugging_info = 1; | |
656 | top_stack->numargs++; | |
657 | ||
658 | /* Special GNU C++ name. */ | |
659 | if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0) | |
025bb325 | 660 | name = "this"; /* FIXME, not alloc'd in obstack. */ |
c906108c SS |
661 | s = new_symbol (name); |
662 | ||
176620f1 | 663 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
2a2d4dc3 | 664 | SYMBOL_IS_ARGUMENT (s) = 1; |
c906108c SS |
665 | switch (sh->sc) |
666 | { | |
667 | case scRegister: | |
668 | /* Pass by value in register. */ | |
f1e6e072 | 669 | SYMBOL_ACLASS_INDEX (s) = mdebug_register_index; |
c906108c SS |
670 | break; |
671 | case scVar: | |
672 | /* Pass by reference on stack. */ | |
f1e6e072 | 673 | SYMBOL_ACLASS_INDEX (s) = LOC_REF_ARG; |
c906108c SS |
674 | break; |
675 | case scVarRegister: | |
676 | /* Pass by reference in register. */ | |
f1e6e072 | 677 | SYMBOL_ACLASS_INDEX (s) = mdebug_regparm_index; |
c906108c SS |
678 | break; |
679 | default: | |
680 | /* Pass by value on stack. */ | |
f1e6e072 | 681 | SYMBOL_ACLASS_INDEX (s) = LOC_ARG; |
c906108c SS |
682 | break; |
683 | } | |
684 | SYMBOL_VALUE (s) = svalue; | |
685 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
c7efd0b9 | 686 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
687 | break; |
688 | ||
025bb325 | 689 | case stLabel: /* label, goes into current block. */ |
c906108c | 690 | s = new_symbol (name); |
025bb325 | 691 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; /* So that it can be used */ |
f1e6e072 | 692 | SYMBOL_ACLASS_INDEX (s) = LOC_LABEL; /* but not misused. */ |
c906108c | 693 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; |
46bf5051 | 694 | SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_int; |
c7efd0b9 | 695 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
696 | break; |
697 | ||
025bb325 MS |
698 | case stProc: /* Procedure, usually goes into global block. */ |
699 | case stStaticProc: /* Static procedure, goes into current block. */ | |
1fb4c65b JB |
700 | /* For stProc symbol records, we need to check the storage class |
701 | as well, as only (stProc, scText) entries represent "real" | |
702 | procedures - See the Compaq document titled "Object File / | |
703 | Symbol Table Format Specification" for more information. | |
704 | If the storage class is not scText, we discard the whole block | |
705 | of symbol records for this stProc. */ | |
706 | if (sh->st == stProc && sh->sc != scText) | |
707 | { | |
708 | char *ext_tsym = ext_sh; | |
709 | int keep_counting = 1; | |
710 | SYMR tsym; | |
711 | ||
712 | while (keep_counting) | |
713 | { | |
714 | ext_tsym += external_sym_size; | |
715 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
716 | count++; | |
717 | switch (tsym.st) | |
718 | { | |
719 | case stParam: | |
720 | break; | |
721 | case stEnd: | |
722 | keep_counting = 0; | |
723 | break; | |
724 | default: | |
725 | complaint (&symfile_complaints, | |
e2e0b3e5 | 726 | _("unknown symbol type 0x%x"), sh->st); |
1fb4c65b JB |
727 | break; |
728 | } | |
729 | } | |
730 | break; | |
731 | } | |
c906108c | 732 | s = new_symbol (name); |
176620f1 | 733 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
f1e6e072 | 734 | SYMBOL_ACLASS_INDEX (s) = LOC_BLOCK; |
025bb325 | 735 | /* Type of the return value. */ |
c5aa993b | 736 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
46bf5051 | 737 | t = objfile_type (objfile)->builtin_int; |
c906108c SS |
738 | else |
739 | { | |
740 | t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name); | |
ee300cd4 AC |
741 | if (strcmp (name, "malloc") == 0 |
742 | && TYPE_CODE (t) == TYPE_CODE_VOID) | |
c906108c SS |
743 | { |
744 | /* I don't know why, but, at least under Alpha GNU/Linux, | |
c5aa993b JM |
745 | when linking against a malloc without debugging |
746 | symbols, its read as a function returning void---this | |
747 | is bad because it means we cannot call functions with | |
748 | string arguments interactively; i.e., "call | |
749 | printf("howdy\n")" would fail with the error message | |
750 | "program has no memory available". To avoid this, we | |
751 | patch up the type and make it void* | |
025bb325 | 752 | instead. (davidm@azstarnet.com). */ |
c906108c SS |
753 | t = make_pointer_type (t, NULL); |
754 | } | |
755 | } | |
756 | b = top_stack->cur_block; | |
757 | if (sh->st == stProc) | |
758 | { | |
759 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
b8d56208 | 760 | |
c906108c SS |
761 | /* The next test should normally be true, but provides a |
762 | hook for nested functions (which we don't want to make | |
28397f59 | 763 | global). */ |
c906108c SS |
764 | if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) |
765 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
766 | /* Irix 5 sometimes has duplicate names for the same | |
767 | function. We want to add such names up at the global | |
768 | level, not as a nested function. */ | |
769 | else if (sh->value == top_stack->procadr) | |
770 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
771 | } | |
c7efd0b9 | 772 | add_symbol (s, top_stack->cur_st, b); |
c906108c | 773 | |
025bb325 | 774 | /* Make a type for the procedure itself. */ |
c906108c SS |
775 | SYMBOL_TYPE (s) = lookup_function_type (t); |
776 | ||
1e698235 DJ |
777 | /* All functions in C++ have prototypes. For C we don't have enough |
778 | information in the debug info. */ | |
779 | if (SYMBOL_LANGUAGE (s) == language_cplus) | |
876cecd0 | 780 | TYPE_PROTOTYPED (SYMBOL_TYPE (s)) = 1; |
1e698235 | 781 | |
025bb325 | 782 | /* Create and enter a new lexical context. */ |
de4f826b | 783 | b = new_block (FUNCTION_BLOCK); |
c906108c SS |
784 | SYMBOL_BLOCK_VALUE (s) = b; |
785 | BLOCK_FUNCTION (b) = s; | |
786 | BLOCK_START (b) = BLOCK_END (b) = sh->value; | |
787 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
788 | add_block (b, top_stack->cur_st); | |
789 | ||
025bb325 | 790 | /* Not if we only have partial info. */ |
c5aa993b | 791 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
792 | break; |
793 | ||
794 | push_parse_stack (); | |
795 | top_stack->cur_block = b; | |
796 | top_stack->blocktype = sh->st; | |
797 | top_stack->cur_type = SYMBOL_TYPE (s); | |
798 | top_stack->cur_field = -1; | |
799 | top_stack->procadr = sh->value; | |
800 | top_stack->numargs = 0; | |
801 | break; | |
802 | ||
803 | /* Beginning of code for structure, union, and enum definitions. | |
c5aa993b | 804 | They all share a common set of local variables, defined here. */ |
c906108c SS |
805 | { |
806 | enum type_code type_code; | |
807 | char *ext_tsym; | |
808 | int nfields; | |
809 | long max_value; | |
810 | struct field *f; | |
811 | ||
025bb325 | 812 | case stStruct: /* Start a block defining a struct type. */ |
c906108c SS |
813 | type_code = TYPE_CODE_STRUCT; |
814 | goto structured_common; | |
815 | ||
025bb325 | 816 | case stUnion: /* Start a block defining a union type. */ |
c906108c SS |
817 | type_code = TYPE_CODE_UNION; |
818 | goto structured_common; | |
819 | ||
025bb325 | 820 | case stEnum: /* Start a block defining an enum type. */ |
c906108c SS |
821 | type_code = TYPE_CODE_ENUM; |
822 | goto structured_common; | |
823 | ||
025bb325 | 824 | case stBlock: /* Either a lexical block, or some type. */ |
c5aa993b | 825 | if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc)) |
c906108c SS |
826 | goto case_stBlock_code; /* Lexical block */ |
827 | ||
828 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ | |
829 | ||
830 | /* Common code for handling struct, union, enum, and/or as-yet- | |
831 | unknown-type blocks of info about structured data. `type_code' | |
832 | has been set to the proper TYPE_CODE, if we know it. */ | |
833 | structured_common: | |
834 | found_ecoff_debugging_info = 1; | |
835 | push_parse_stack (); | |
836 | top_stack->blocktype = stBlock; | |
837 | ||
025bb325 | 838 | /* First count the number of fields and the highest value. */ |
c906108c SS |
839 | nfields = 0; |
840 | max_value = 0; | |
841 | for (ext_tsym = ext_sh + external_sym_size; | |
842 | ; | |
843 | ext_tsym += external_sym_size) | |
844 | { | |
845 | SYMR tsym; | |
846 | ||
847 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
848 | ||
849 | switch (tsym.st) | |
850 | { | |
851 | case stEnd: | |
f0394be6 | 852 | /* C++ encodes class types as structures where there the |
025bb325 | 853 | methods are encoded as stProc. The scope of stProc |
f0394be6 JB |
854 | symbols also ends with stEnd, thus creating a risk of |
855 | taking the wrong stEnd symbol record as the end of | |
856 | the current struct, which would cause GDB to undercount | |
857 | the real number of fields in this struct. To make sure | |
858 | we really reached the right stEnd symbol record, we | |
859 | check the associated name, and match it against the | |
860 | struct name. Since method names are mangled while | |
861 | the class name is not, there is no risk of having a | |
862 | method whose name is identical to the class name | |
863 | (in particular constructor method names are different | |
864 | from the class name). There is therefore no risk that | |
7bde8967 KB |
865 | this check stops the count on the StEnd of a method. |
866 | ||
867 | Also, assume that we're really at the end when tsym.iss | |
868 | is 0 (issNull). */ | |
869 | if (tsym.iss == issNull | |
870 | || strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss, | |
871 | name) == 0) | |
f0394be6 JB |
872 | goto end_of_fields; |
873 | break; | |
c906108c SS |
874 | |
875 | case stMember: | |
876 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
877 | { |
878 | /* If the type of the member is Nil (or Void), | |
879 | without qualifiers, assume the tag is an | |
880 | enumeration. | |
881 | Alpha cc -migrate enums are recognized by a zero | |
882 | index and a zero symbol value. | |
883 | DU 4.0 cc enums are recognized by a member type of | |
884 | btEnum without qualifiers and a zero symbol value. */ | |
885 | if (tsym.index == indexNil | |
886 | || (tsym.index == 0 && sh->value == 0)) | |
887 | type_code = TYPE_CODE_ENUM; | |
888 | else | |
889 | { | |
890 | (*debug_swap->swap_tir_in) (bigend, | |
891 | &ax[tsym.index].a_ti, | |
892 | &tir); | |
893 | if ((tir.bt == btNil || tir.bt == btVoid | |
894 | || (tir.bt == btEnum && sh->value == 0)) | |
895 | && tir.tq0 == tqNil) | |
896 | type_code = TYPE_CODE_ENUM; | |
897 | } | |
898 | } | |
c906108c SS |
899 | nfields++; |
900 | if (tsym.value > max_value) | |
901 | max_value = tsym.value; | |
902 | break; | |
903 | ||
904 | case stBlock: | |
905 | case stUnion: | |
906 | case stEnum: | |
907 | case stStruct: | |
908 | { | |
909 | #if 0 | |
910 | /* This is a no-op; is it trying to tell us something | |
911 | we should be checking? */ | |
c5aa993b | 912 | if (tsym.sc == scVariant); /*UNIMPLEMENTED */ |
c906108c SS |
913 | #endif |
914 | if (tsym.index != 0) | |
915 | { | |
916 | /* This is something like a struct within a | |
c5aa993b JM |
917 | struct. Skip over the fields of the inner |
918 | struct. The -1 is because the for loop will | |
919 | increment ext_tsym. */ | |
c906108c SS |
920 | ext_tsym = ((char *) debug_info->external_sym |
921 | + ((cur_fdr->isymBase + tsym.index - 1) | |
922 | * external_sym_size)); | |
923 | } | |
924 | } | |
925 | break; | |
926 | ||
927 | case stTypedef: | |
928 | /* mips cc puts out a typedef for struct x if it is not yet | |
929 | defined when it encounters | |
930 | struct y { struct x *xp; }; | |
025bb325 | 931 | Just ignore it. */ |
c906108c SS |
932 | break; |
933 | ||
934 | case stIndirect: | |
935 | /* Irix5 cc puts out a stIndirect for struct x if it is not | |
936 | yet defined when it encounters | |
937 | struct y { struct x *xp; }; | |
025bb325 | 938 | Just ignore it. */ |
c906108c SS |
939 | break; |
940 | ||
941 | default: | |
23136709 | 942 | complaint (&symfile_complaints, |
3e43a32a MS |
943 | _("declaration block contains " |
944 | "unhandled symbol type %d"), | |
23136709 | 945 | tsym.st); |
c906108c SS |
946 | } |
947 | } | |
82ae4854 | 948 | end_of_fields: |
c906108c SS |
949 | |
950 | /* In an stBlock, there is no way to distinguish structs, | |
951 | unions, and enums at this point. This is a bug in the | |
952 | original design (that has been fixed with the recent | |
953 | addition of the stStruct, stUnion, and stEnum symbol | |
954 | types.) The way you can tell is if/when you see a variable | |
955 | or field of that type. In that case the variable's type | |
956 | (in the AUX table) says if the type is struct, union, or | |
957 | enum, and points back to the stBlock here. So you can | |
958 | patch the tag kind up later - but only if there actually is | |
959 | a variable or field of that type. | |
960 | ||
961 | So until we know for sure, we will guess at this point. | |
962 | The heuristic is: | |
963 | If the first member has index==indexNil or a void type, | |
964 | assume we have an enumeration. | |
965 | Otherwise, if there is more than one member, and all | |
966 | the members have offset 0, assume we have a union. | |
967 | Otherwise, assume we have a struct. | |
968 | ||
969 | The heuristic could guess wrong in the case of of an | |
970 | enumeration with no members or a union with one (or zero) | |
971 | members, or when all except the last field of a struct have | |
972 | width zero. These are uncommon and/or illegal situations, | |
973 | and in any case guessing wrong probably doesn't matter | |
974 | much. | |
975 | ||
976 | But if we later do find out we were wrong, we fixup the tag | |
977 | kind. Members of an enumeration must be handled | |
978 | differently from struct/union fields, and that is harder to | |
979 | patch up, but luckily we shouldn't need to. (If there are | |
980 | any enumeration members, we can tell for sure it's an enum | |
025bb325 | 981 | here.) */ |
c906108c SS |
982 | |
983 | if (type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
984 | { |
985 | if (nfields > 1 && max_value == 0) | |
986 | type_code = TYPE_CODE_UNION; | |
987 | else | |
988 | type_code = TYPE_CODE_STRUCT; | |
989 | } | |
c906108c SS |
990 | |
991 | /* Create a new type or use the pending type. */ | |
992 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
993 | if (pend == (struct mdebug_pending *) NULL) | |
994 | { | |
995 | t = new_type (NULL); | |
996 | add_pending (cur_fdr, ext_sh, t); | |
997 | } | |
998 | else | |
999 | t = pend->t; | |
1000 | ||
1001 | /* Do not set the tag name if it is a compiler generated tag name | |
1002 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. | |
1003 | Alpha cc puts out an sh->iss of zero for those. */ | |
1004 | if (sh->iss == 0 || name[0] == '.' || name[0] == '\0') | |
1005 | TYPE_TAG_NAME (t) = NULL; | |
1006 | else | |
dd707e8e | 1007 | TYPE_TAG_NAME (t) = obconcat (&mdebugread_objfile->objfile_obstack, |
3e43a32a | 1008 | name, (char *) NULL); |
c906108c SS |
1009 | |
1010 | TYPE_CODE (t) = type_code; | |
1011 | TYPE_LENGTH (t) = sh->value; | |
1012 | TYPE_NFIELDS (t) = nfields; | |
1013 | TYPE_FIELDS (t) = f = ((struct field *) | |
1014 | TYPE_ALLOC (t, | |
1015 | nfields * sizeof (struct field))); | |
1016 | ||
1017 | if (type_code == TYPE_CODE_ENUM) | |
1018 | { | |
1019 | int unsigned_enum = 1; | |
1020 | ||
025bb325 | 1021 | /* This is a non-empty enum. */ |
c906108c SS |
1022 | |
1023 | /* DEC c89 has the number of enumerators in the sh.value field, | |
1024 | not the type length, so we have to compensate for that | |
1025 | incompatibility quirk. | |
1026 | This might do the wrong thing for an enum with one or two | |
1027 | enumerators and gcc -gcoff -fshort-enums, but these cases | |
1028 | are hopefully rare enough. | |
1029 | Alpha cc -migrate has a sh.value field of zero, we adjust | |
1030 | that too. */ | |
1031 | if (TYPE_LENGTH (t) == TYPE_NFIELDS (t) | |
1032 | || TYPE_LENGTH (t) == 0) | |
5e2b427d | 1033 | TYPE_LENGTH (t) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
c906108c SS |
1034 | for (ext_tsym = ext_sh + external_sym_size; |
1035 | ; | |
1036 | ext_tsym += external_sym_size) | |
1037 | { | |
1038 | SYMR tsym; | |
1039 | struct symbol *enum_sym; | |
1040 | ||
1041 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
1042 | ||
1043 | if (tsym.st != stMember) | |
1044 | break; | |
1045 | ||
14e75d8e | 1046 | SET_FIELD_ENUMVAL (*f, tsym.value); |
c906108c SS |
1047 | FIELD_TYPE (*f) = t; |
1048 | FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss; | |
1049 | FIELD_BITSIZE (*f) = 0; | |
1050 | ||
e623cf5d | 1051 | enum_sym = allocate_symbol (mdebugread_objfile); |
3567439c | 1052 | SYMBOL_SET_LINKAGE_NAME |
10f0c4bb TT |
1053 | (enum_sym, |
1054 | obstack_copy0 (&mdebugread_objfile->objfile_obstack, | |
1055 | f->name, strlen (f->name))); | |
f1e6e072 | 1056 | SYMBOL_ACLASS_INDEX (enum_sym) = LOC_CONST; |
c906108c | 1057 | SYMBOL_TYPE (enum_sym) = t; |
176620f1 | 1058 | SYMBOL_DOMAIN (enum_sym) = VAR_DOMAIN; |
c906108c SS |
1059 | SYMBOL_VALUE (enum_sym) = tsym.value; |
1060 | if (SYMBOL_VALUE (enum_sym) < 0) | |
1061 | unsigned_enum = 0; | |
c7efd0b9 | 1062 | add_symbol (enum_sym, top_stack->cur_st, top_stack->cur_block); |
c906108c | 1063 | |
025bb325 | 1064 | /* Skip the stMembers that we've handled. */ |
c906108c SS |
1065 | count++; |
1066 | f++; | |
1067 | } | |
1068 | if (unsigned_enum) | |
876cecd0 | 1069 | TYPE_UNSIGNED (t) = 1; |
c906108c | 1070 | } |
025bb325 | 1071 | /* Make this the current type. */ |
c906108c SS |
1072 | top_stack->cur_type = t; |
1073 | top_stack->cur_field = 0; | |
1074 | ||
1075 | /* Do not create a symbol for alpha cc unnamed structs. */ | |
1076 | if (sh->iss == 0) | |
1077 | break; | |
1078 | ||
1079 | /* gcc puts out an empty struct for an opaque struct definitions, | |
1080 | do not create a symbol for it either. */ | |
1081 | if (TYPE_NFIELDS (t) == 0) | |
1082 | { | |
876cecd0 | 1083 | TYPE_STUB (t) = 1; |
c906108c SS |
1084 | break; |
1085 | } | |
1086 | ||
1087 | s = new_symbol (name); | |
176620f1 | 1088 | SYMBOL_DOMAIN (s) = STRUCT_DOMAIN; |
f1e6e072 | 1089 | SYMBOL_ACLASS_INDEX (s) = LOC_TYPEDEF; |
c906108c SS |
1090 | SYMBOL_VALUE (s) = 0; |
1091 | SYMBOL_TYPE (s) = t; | |
c7efd0b9 | 1092 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1093 | break; |
1094 | ||
1095 | /* End of local variables shared by struct, union, enum, and | |
1096 | block (as yet unknown struct/union/enum) processing. */ | |
1097 | } | |
1098 | ||
1099 | case_stBlock_code: | |
1100 | found_ecoff_debugging_info = 1; | |
025bb325 MS |
1101 | /* Beginnning of (code) block. Value of symbol |
1102 | is the displacement from procedure start. */ | |
c906108c SS |
1103 | push_parse_stack (); |
1104 | ||
1105 | /* Do not start a new block if this is the outermost block of a | |
c5aa993b JM |
1106 | procedure. This allows the LOC_BLOCK symbol to point to the |
1107 | block with the local variables, so funcname::var works. */ | |
c906108c SS |
1108 | if (top_stack->blocktype == stProc |
1109 | || top_stack->blocktype == stStaticProc) | |
1110 | { | |
1111 | top_stack->blocktype = stNil; | |
1112 | break; | |
1113 | } | |
1114 | ||
1115 | top_stack->blocktype = stBlock; | |
de4f826b | 1116 | b = new_block (NON_FUNCTION_BLOCK); |
c906108c SS |
1117 | BLOCK_START (b) = sh->value + top_stack->procadr; |
1118 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1119 | top_stack->cur_block = b; | |
1120 | add_block (b, top_stack->cur_st); | |
1121 | break; | |
1122 | ||
1123 | case stEnd: /* end (of anything) */ | |
c5aa993b | 1124 | if (sh->sc == scInfo || SC_IS_COMMON (sh->sc)) |
c906108c SS |
1125 | { |
1126 | /* Finished with type */ | |
1127 | top_stack->cur_type = 0; | |
1128 | } | |
1129 | else if (sh->sc == scText && | |
1130 | (top_stack->blocktype == stProc || | |
1131 | top_stack->blocktype == stStaticProc)) | |
1132 | { | |
1133 | /* Finished with procedure */ | |
1134 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
f92761ec | 1135 | struct mdebug_extra_func_info *e; |
de4f826b | 1136 | struct block *b = top_stack->cur_block; |
c906108c SS |
1137 | struct type *ftype = top_stack->cur_type; |
1138 | int i; | |
1139 | ||
1140 | BLOCK_END (top_stack->cur_block) += sh->value; /* size */ | |
1141 | ||
025bb325 | 1142 | /* Make up special symbol to contain procedure specific info. */ |
f92761ec | 1143 | s = new_symbol (MDEBUG_EFI_SYMBOL_NAME); |
176620f1 | 1144 | SYMBOL_DOMAIN (s) = LABEL_DOMAIN; |
f1e6e072 | 1145 | SYMBOL_ACLASS_INDEX (s) = LOC_CONST; |
dd707e8e | 1146 | SYMBOL_TYPE (s) = objfile_type (mdebugread_objfile)->builtin_void; |
f92761ec | 1147 | e = ((struct mdebug_extra_func_info *) |
dd707e8e | 1148 | obstack_alloc (&mdebugread_objfile->objfile_obstack, |
f92761ec AC |
1149 | sizeof (struct mdebug_extra_func_info))); |
1150 | memset (e, 0, sizeof (struct mdebug_extra_func_info)); | |
9918cab9 | 1151 | SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e; |
c906108c SS |
1152 | e->numargs = top_stack->numargs; |
1153 | e->pdr.framereg = -1; | |
c7efd0b9 | 1154 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c | 1155 | |
c906108c SS |
1156 | /* f77 emits proc-level with address bounds==[0,0], |
1157 | So look for such child blocks, and patch them. */ | |
1158 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
1159 | { | |
1160 | struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i); | |
b8d56208 | 1161 | |
c906108c SS |
1162 | if (BLOCK_SUPERBLOCK (b_bad) == b |
1163 | && BLOCK_START (b_bad) == top_stack->procadr | |
1164 | && BLOCK_END (b_bad) == top_stack->procadr) | |
1165 | { | |
1166 | BLOCK_START (b_bad) = BLOCK_START (b); | |
1167 | BLOCK_END (b_bad) = BLOCK_END (b); | |
1168 | } | |
1169 | } | |
1170 | ||
1171 | if (TYPE_NFIELDS (ftype) <= 0) | |
1172 | { | |
1173 | /* No parameter type information is recorded with the function's | |
025bb325 | 1174 | type. Set that from the type of the parameter symbols. */ |
c906108c SS |
1175 | int nparams = top_stack->numargs; |
1176 | int iparams; | |
1177 | struct symbol *sym; | |
1178 | ||
1179 | if (nparams > 0) | |
1180 | { | |
8157b174 | 1181 | struct block_iterator iter; |
b8d56208 | 1182 | |
c906108c SS |
1183 | TYPE_NFIELDS (ftype) = nparams; |
1184 | TYPE_FIELDS (ftype) = (struct field *) | |
1185 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
c5aa993b | 1186 | |
de4f826b DC |
1187 | iparams = 0; |
1188 | ALL_BLOCK_SYMBOLS (b, iter, sym) | |
c906108c | 1189 | { |
de4f826b DC |
1190 | if (iparams == nparams) |
1191 | break; | |
1192 | ||
2a2d4dc3 | 1193 | if (SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1194 | { |
c906108c | 1195 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); |
8176bb6d | 1196 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 1197 | iparams++; |
c906108c SS |
1198 | } |
1199 | } | |
1200 | } | |
1201 | } | |
1202 | } | |
1203 | else if (sh->sc == scText && top_stack->blocktype == stBlock) | |
1204 | { | |
025bb325 | 1205 | /* End of (code) block. The value of the symbol is the |
c906108c | 1206 | displacement from the procedure`s start address of the |
025bb325 | 1207 | end of this block. */ |
c906108c | 1208 | BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr; |
c906108c SS |
1209 | } |
1210 | else if (sh->sc == scText && top_stack->blocktype == stNil) | |
1211 | { | |
1212 | /* End of outermost block. Pop parse stack and ignore. The | |
1213 | following stEnd of stProc will take care of the block. */ | |
1214 | ; | |
1215 | } | |
1216 | else if (sh->sc == scText && top_stack->blocktype == stFile) | |
1217 | { | |
1218 | /* End of file. Pop parse stack and ignore. Higher | |
1219 | level code deals with this. */ | |
1220 | ; | |
1221 | } | |
1222 | else | |
23136709 | 1223 | complaint (&symfile_complaints, |
e2e0b3e5 | 1224 | _("stEnd with storage class %d not handled"), sh->sc); |
c906108c | 1225 | |
025bb325 | 1226 | pop_parse_stack (); /* Restore previous lexical context. */ |
c906108c SS |
1227 | break; |
1228 | ||
1229 | case stMember: /* member of struct or union */ | |
1230 | f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++]; | |
1231 | FIELD_NAME (*f) = name; | |
d6a843b5 | 1232 | SET_FIELD_BITPOS (*f, sh->value); |
c906108c | 1233 | bitsize = 0; |
3e43a32a MS |
1234 | FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, |
1235 | &bitsize, bigend, name); | |
c906108c SS |
1236 | FIELD_BITSIZE (*f) = bitsize; |
1237 | break; | |
1238 | ||
1239 | case stIndirect: /* forward declaration on Irix5 */ | |
1240 | /* Forward declarations from Irix5 cc are handled by cross_ref, | |
c5aa993b | 1241 | skip them. */ |
c906108c SS |
1242 | break; |
1243 | ||
1244 | case stTypedef: /* type definition */ | |
1245 | found_ecoff_debugging_info = 1; | |
1246 | ||
1247 | /* Typedefs for forward declarations and opaque structs from alpha cc | |
c5aa993b | 1248 | are handled by cross_ref, skip them. */ |
c906108c SS |
1249 | if (sh->iss == 0) |
1250 | break; | |
1251 | ||
1252 | /* Parse the type or use the pending type. */ | |
1253 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1254 | if (pend == (struct mdebug_pending *) NULL) | |
1255 | { | |
c5aa993b | 1256 | t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name); |
c906108c SS |
1257 | add_pending (cur_fdr, ext_sh, t); |
1258 | } | |
1259 | else | |
1260 | t = pend->t; | |
1261 | ||
025bb325 MS |
1262 | /* Mips cc puts out a typedef with the name of the struct for forward |
1263 | declarations. These should not go into the symbol table and | |
c5aa993b JM |
1264 | TYPE_NAME should not be set for them. |
1265 | They can't be distinguished from an intentional typedef to | |
1266 | the same name however: | |
1267 | x.h: | |
1268 | struct x { int ix; int jx; }; | |
1269 | struct xx; | |
1270 | x.c: | |
1271 | typedef struct x x; | |
1272 | struct xx {int ixx; int jxx; }; | |
1273 | generates a cross referencing stTypedef for x and xx. | |
1274 | The user visible effect of this is that the type of a pointer | |
1275 | to struct foo sometimes is given as `foo *' instead of `struct foo *'. | |
1276 | The problem is fixed with alpha cc and Irix5 cc. */ | |
c906108c SS |
1277 | |
1278 | /* However if the typedef cross references to an opaque aggregate, it | |
c5aa993b | 1279 | is safe to omit it from the symbol table. */ |
c906108c SS |
1280 | |
1281 | if (has_opaque_xref (cur_fdr, sh)) | |
1282 | break; | |
1283 | s = new_symbol (name); | |
176620f1 | 1284 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
f1e6e072 | 1285 | SYMBOL_ACLASS_INDEX (s) = LOC_TYPEDEF; |
c906108c SS |
1286 | SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block; |
1287 | SYMBOL_TYPE (s) = t; | |
c7efd0b9 | 1288 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1289 | |
1290 | /* Incomplete definitions of structs should not get a name. */ | |
1291 | if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL | |
1292 | && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0 | |
c5aa993b | 1293 | || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT |
c906108c SS |
1294 | && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION))) |
1295 | { | |
1296 | if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR | |
1297 | || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC) | |
1298 | { | |
1299 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1300 | foo" or "function returning foo", we better not set |
1301 | the TYPE_NAME. If the program contains "typedef char | |
1302 | *caddr_t;", we don't want all variables of type char | |
1303 | * to print as caddr_t. This is not just a | |
1304 | consequence of GDB's type management; CC and GCC (at | |
1305 | least through version 2.4) both output variables of | |
1306 | either type char * or caddr_t with the type | |
1307 | refering to the stTypedef symbol for caddr_t. If a future | |
1308 | compiler cleans this up it GDB is not ready for it | |
1309 | yet, but if it becomes ready we somehow need to | |
1310 | disable this check (without breaking the PCC/GCC2.4 | |
1311 | case). | |
1312 | ||
1313 | Sigh. | |
1314 | ||
1315 | Fortunately, this check seems not to be necessary | |
1316 | for anything except pointers or functions. */ | |
c906108c SS |
1317 | } |
1318 | else | |
3567439c | 1319 | TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_LINKAGE_NAME (s); |
c906108c SS |
1320 | } |
1321 | break; | |
1322 | ||
1323 | case stFile: /* file name */ | |
1324 | push_parse_stack (); | |
1325 | top_stack->blocktype = sh->st; | |
1326 | break; | |
1327 | ||
1328 | /* I`ve never seen these for C */ | |
1329 | case stRegReloc: | |
1330 | break; /* register relocation */ | |
1331 | case stForward: | |
1332 | break; /* forwarding address */ | |
1333 | case stConstant: | |
1334 | break; /* constant */ | |
1335 | default: | |
e2e0b3e5 | 1336 | complaint (&symfile_complaints, _("unknown symbol type 0x%x"), sh->st); |
c906108c SS |
1337 | break; |
1338 | } | |
1339 | ||
1340 | return count; | |
1341 | } | |
1342 | ||
0a9d309a UW |
1343 | /* Basic types. */ |
1344 | ||
1345 | static const struct objfile_data *basic_type_data; | |
1346 | ||
1347 | static struct type * | |
1348 | basic_type (int bt, struct objfile *objfile) | |
1349 | { | |
1350 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
1351 | struct type **map_bt = objfile_data (objfile, basic_type_data); | |
1352 | struct type *tp; | |
1353 | ||
1354 | if (bt >= btMax) | |
1355 | return NULL; | |
1356 | ||
1357 | if (!map_bt) | |
1358 | { | |
1359 | map_bt = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
1360 | btMax, struct type *); | |
1361 | set_objfile_data (objfile, basic_type_data, map_bt); | |
1362 | } | |
1363 | ||
1364 | if (map_bt[bt]) | |
1365 | return map_bt[bt]; | |
1366 | ||
1367 | switch (bt) | |
1368 | { | |
1369 | case btNil: | |
46bf5051 | 1370 | tp = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1371 | break; |
1372 | ||
1373 | case btAdr: | |
1374 | tp = init_type (TYPE_CODE_PTR, 4, TYPE_FLAG_UNSIGNED, | |
1375 | "adr_32", objfile); | |
46bf5051 | 1376 | TYPE_TARGET_TYPE (tp) = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1377 | break; |
1378 | ||
1379 | case btChar: | |
1380 | tp = init_type (TYPE_CODE_INT, 1, 0, | |
1381 | "char", objfile); | |
1382 | break; | |
1383 | ||
1384 | case btUChar: | |
1385 | tp = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
1386 | "unsigned char", objfile); | |
1387 | break; | |
1388 | ||
1389 | case btShort: | |
1390 | tp = init_type (TYPE_CODE_INT, 2, 0, | |
1391 | "short", objfile); | |
1392 | break; | |
1393 | ||
1394 | case btUShort: | |
1395 | tp = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
1396 | "unsigned short", objfile); | |
1397 | break; | |
1398 | ||
1399 | case btInt: | |
1400 | tp = init_type (TYPE_CODE_INT, 4, 0, | |
1401 | "int", objfile); | |
1402 | break; | |
1403 | ||
1404 | case btUInt: | |
1405 | tp = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1406 | "unsigned int", objfile); | |
1407 | break; | |
1408 | ||
1409 | case btLong: | |
1410 | tp = init_type (TYPE_CODE_INT, 4, 0, | |
1411 | "long", objfile); | |
1412 | break; | |
1413 | ||
1414 | case btULong: | |
1415 | tp = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1416 | "unsigned long", objfile); | |
1417 | break; | |
1418 | ||
1419 | case btFloat: | |
1420 | tp = init_type (TYPE_CODE_FLT, | |
1421 | gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1422 | "float", objfile); | |
1423 | break; | |
1424 | ||
1425 | case btDouble: | |
1426 | tp = init_type (TYPE_CODE_FLT, | |
1427 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1428 | "double", objfile); | |
1429 | break; | |
1430 | ||
1431 | case btComplex: | |
1432 | tp = init_type (TYPE_CODE_COMPLEX, | |
1433 | 2 * gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1434 | "complex", objfile); | |
1435 | TYPE_TARGET_TYPE (tp) = basic_type (btFloat, objfile); | |
1436 | break; | |
1437 | ||
1438 | case btDComplex: | |
1439 | tp = init_type (TYPE_CODE_COMPLEX, | |
1440 | 2 * gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1441 | "double complex", objfile); | |
1442 | TYPE_TARGET_TYPE (tp) = basic_type (btDouble, objfile); | |
1443 | break; | |
1444 | ||
1445 | case btFixedDec: | |
1446 | /* We use TYPE_CODE_INT to print these as integers. Does this do any | |
1447 | good? Would we be better off with TYPE_CODE_ERROR? Should | |
1448 | TYPE_CODE_ERROR print things in hex if it knows the size? */ | |
1449 | tp = init_type (TYPE_CODE_INT, | |
1450 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1451 | "fixed decimal", objfile); | |
1452 | break; | |
1453 | ||
1454 | case btFloatDec: | |
1455 | tp = init_type (TYPE_CODE_ERROR, | |
1456 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, 0, | |
1457 | "floating decimal", objfile); | |
1458 | break; | |
1459 | ||
1460 | case btString: | |
1461 | /* Is a "string" the way btString means it the same as TYPE_CODE_STRING? | |
1462 | FIXME. */ | |
1463 | tp = init_type (TYPE_CODE_STRING, 1, 0, | |
1464 | "string", objfile); | |
1465 | break; | |
1466 | ||
1467 | case btVoid: | |
46bf5051 | 1468 | tp = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1469 | break; |
1470 | ||
1471 | case btLong64: | |
1472 | tp = init_type (TYPE_CODE_INT, 8, 0, | |
1473 | "long", objfile); | |
1474 | break; | |
1475 | ||
1476 | case btULong64: | |
1477 | tp = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
1478 | "unsigned long", objfile); | |
1479 | break; | |
1480 | ||
1481 | case btLongLong64: | |
1482 | tp = init_type (TYPE_CODE_INT, 8, 0, | |
1483 | "long long", objfile); | |
1484 | break; | |
1485 | ||
1486 | case btULongLong64: | |
1487 | tp = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
1488 | "unsigned long long", objfile); | |
1489 | break; | |
1490 | ||
1491 | case btAdr64: | |
1492 | tp = init_type (TYPE_CODE_PTR, 8, TYPE_FLAG_UNSIGNED, | |
1493 | "adr_64", objfile); | |
46bf5051 | 1494 | TYPE_TARGET_TYPE (tp) = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1495 | break; |
1496 | ||
1497 | case btInt64: | |
1498 | tp = init_type (TYPE_CODE_INT, 8, 0, | |
1499 | "int", objfile); | |
1500 | break; | |
1501 | ||
1502 | case btUInt64: | |
1503 | tp = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
1504 | "unsigned int", objfile); | |
1505 | break; | |
1506 | ||
1507 | default: | |
1508 | tp = NULL; | |
1509 | break; | |
1510 | } | |
1511 | ||
1512 | map_bt[bt] = tp; | |
1513 | return tp; | |
1514 | } | |
1515 | ||
c906108c | 1516 | /* Parse the type information provided in the raw AX entries for |
025bb325 | 1517 | the symbol SH. Return the bitfield size in BS, in case. |
c906108c SS |
1518 | We must byte-swap the AX entries before we use them; BIGEND says whether |
1519 | they are big-endian or little-endian (from fh->fBigendian). */ | |
1520 | ||
1521 | static struct type * | |
fba45db2 KB |
1522 | parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs, |
1523 | int bigend, char *sym_name) | |
c906108c | 1524 | { |
c906108c SS |
1525 | TIR t[1]; |
1526 | struct type *tp = 0; | |
1527 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1528 | ||
025bb325 | 1529 | /* Handle undefined types, they have indexNil. */ |
c906108c | 1530 | if (aux_index == indexNil) |
dd707e8e | 1531 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1532 | |
1533 | /* Handle corrupt aux indices. */ | |
1534 | if (aux_index >= (debug_info->fdr + fd)->caux) | |
1535 | { | |
23136709 | 1536 | index_complaint (sym_name); |
dd707e8e | 1537 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1538 | } |
1539 | ax += aux_index; | |
1540 | ||
1541 | /* Use aux as a type information record, map its basic type. */ | |
1542 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
dd707e8e | 1543 | tp = basic_type (t->bt, mdebugread_objfile); |
0a9d309a | 1544 | if (tp == NULL) |
c906108c | 1545 | { |
025bb325 | 1546 | /* Cannot use builtin types -- build our own. */ |
c906108c SS |
1547 | switch (t->bt) |
1548 | { | |
1549 | case btStruct: | |
1550 | type_code = TYPE_CODE_STRUCT; | |
1551 | break; | |
1552 | case btUnion: | |
1553 | type_code = TYPE_CODE_UNION; | |
1554 | break; | |
1555 | case btEnum: | |
1556 | type_code = TYPE_CODE_ENUM; | |
1557 | break; | |
1558 | case btRange: | |
1559 | type_code = TYPE_CODE_RANGE; | |
1560 | break; | |
1561 | case btSet: | |
1562 | type_code = TYPE_CODE_SET; | |
1563 | break; | |
1564 | case btIndirect: | |
025bb325 | 1565 | /* alpha cc -migrate uses this for typedefs. The true type will |
c906108c SS |
1566 | be obtained by crossreferencing below. */ |
1567 | type_code = TYPE_CODE_ERROR; | |
1568 | break; | |
1569 | case btTypedef: | |
025bb325 | 1570 | /* alpha cc uses this for typedefs. The true type will be |
c906108c SS |
1571 | obtained by crossreferencing below. */ |
1572 | type_code = TYPE_CODE_ERROR; | |
1573 | break; | |
1574 | default: | |
23136709 | 1575 | basic_type_complaint (t->bt, sym_name); |
dd707e8e | 1576 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1577 | } |
1578 | } | |
1579 | ||
025bb325 | 1580 | /* Move on to next aux. */ |
c906108c SS |
1581 | ax++; |
1582 | ||
1583 | if (t->fBitfield) | |
1584 | { | |
1585 | int width = AUX_GET_WIDTH (bigend, ax); | |
b8d56208 | 1586 | |
25caa7a8 | 1587 | /* Inhibit core dumps if TIR is corrupted. */ |
c5aa993b | 1588 | if (bs == (int *) NULL) |
c906108c SS |
1589 | { |
1590 | /* Alpha cc -migrate encodes char and unsigned char types | |
1591 | as short and unsigned short types with a field width of 8. | |
1592 | Enum types also have a field width which we ignore for now. */ | |
1593 | if (t->bt == btShort && width == 8) | |
dd707e8e | 1594 | tp = basic_type (btChar, mdebugread_objfile); |
c906108c | 1595 | else if (t->bt == btUShort && width == 8) |
dd707e8e | 1596 | tp = basic_type (btUChar, mdebugread_objfile); |
c906108c SS |
1597 | else if (t->bt == btEnum) |
1598 | ; | |
1599 | else | |
3e43a32a MS |
1600 | complaint (&symfile_complaints, |
1601 | _("can't handle TIR fBitfield for %s"), | |
23136709 | 1602 | sym_name); |
c906108c SS |
1603 | } |
1604 | else | |
c5aa993b | 1605 | *bs = width; |
c906108c SS |
1606 | ax++; |
1607 | } | |
1608 | ||
1609 | /* A btIndirect entry cross references to an aux entry containing | |
1610 | the type. */ | |
1611 | if (t->bt == btIndirect) | |
1612 | { | |
1613 | RNDXR rn[1]; | |
1614 | int rf; | |
1615 | FDR *xref_fh; | |
1616 | int xref_fd; | |
1617 | ||
1618 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
1619 | ax++; | |
1620 | if (rn->rfd == 0xfff) | |
1621 | { | |
1622 | rf = AUX_GET_ISYM (bigend, ax); | |
1623 | ax++; | |
1624 | } | |
1625 | else | |
1626 | rf = rn->rfd; | |
1627 | ||
1628 | if (rf == -1) | |
1629 | { | |
23136709 | 1630 | complaint (&symfile_complaints, |
e2e0b3e5 | 1631 | _("unable to cross ref btIndirect for %s"), sym_name); |
dd707e8e | 1632 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1633 | } |
1634 | xref_fh = get_rfd (fd, rf); | |
1635 | xref_fd = xref_fh - debug_info->fdr; | |
1636 | tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase, | |
c5aa993b | 1637 | rn->index, (int *) NULL, xref_fh->fBigendian, sym_name); |
c906108c SS |
1638 | } |
1639 | ||
1640 | /* All these types really point to some (common) MIPS type | |
1641 | definition, and only the type-qualifiers fully identify | |
025bb325 | 1642 | them. We'll make the same effort at sharing. */ |
c906108c SS |
1643 | if (t->bt == btStruct || |
1644 | t->bt == btUnion || | |
1645 | t->bt == btEnum || | |
1646 | ||
c5aa993b JM |
1647 | /* btSet (I think) implies that the name is a tag name, not a typedef |
1648 | name. This apparently is a MIPS extension for C sets. */ | |
c906108c SS |
1649 | t->bt == btSet) |
1650 | { | |
1651 | char *name; | |
1652 | ||
1653 | /* Try to cross reference this type, build new type on failure. */ | |
1654 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1655 | if (tp == (struct type *) NULL) | |
dd707e8e | 1656 | tp = init_type (type_code, 0, 0, (char *) NULL, mdebugread_objfile); |
c906108c SS |
1657 | |
1658 | /* DEC c89 produces cross references to qualified aggregate types, | |
c5aa993b | 1659 | dereference them. */ |
c906108c SS |
1660 | while (TYPE_CODE (tp) == TYPE_CODE_PTR |
1661 | || TYPE_CODE (tp) == TYPE_CODE_ARRAY) | |
0004e5a2 | 1662 | tp = TYPE_TARGET_TYPE (tp); |
c906108c SS |
1663 | |
1664 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1665 | Any type may be returned from cross_ref if file indirect entries |
1666 | are corrupted. */ | |
c906108c SS |
1667 | if (TYPE_CODE (tp) != TYPE_CODE_STRUCT |
1668 | && TYPE_CODE (tp) != TYPE_CODE_UNION | |
1669 | && TYPE_CODE (tp) != TYPE_CODE_ENUM) | |
1670 | { | |
23136709 | 1671 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1672 | } |
1673 | else | |
1674 | { | |
c906108c SS |
1675 | /* Usually, TYPE_CODE(tp) is already type_code. The main |
1676 | exception is if we guessed wrong re struct/union/enum. | |
1677 | But for struct vs. union a wrong guess is harmless, so | |
1678 | don't complain(). */ | |
1679 | if ((TYPE_CODE (tp) == TYPE_CODE_ENUM | |
1680 | && type_code != TYPE_CODE_ENUM) | |
1681 | || (TYPE_CODE (tp) != TYPE_CODE_ENUM | |
1682 | && type_code == TYPE_CODE_ENUM)) | |
1683 | { | |
23136709 | 1684 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1685 | } |
1686 | ||
1687 | if (TYPE_CODE (tp) != type_code) | |
1688 | { | |
1689 | TYPE_CODE (tp) = type_code; | |
1690 | } | |
1691 | ||
1692 | /* Do not set the tag name if it is a compiler generated tag name | |
c5aa993b | 1693 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ |
c906108c SS |
1694 | if (name[0] == '.' || name[0] == '\0') |
1695 | TYPE_TAG_NAME (tp) = NULL; | |
1696 | else if (TYPE_TAG_NAME (tp) == NULL | |
6314a349 | 1697 | || strcmp (TYPE_TAG_NAME (tp), name) != 0) |
3e43a32a | 1698 | TYPE_TAG_NAME (tp) |
10f0c4bb TT |
1699 | = obstack_copy0 (&mdebugread_objfile->objfile_obstack, |
1700 | name, strlen (name)); | |
c906108c SS |
1701 | } |
1702 | } | |
1703 | ||
1704 | /* All these types really point to some (common) MIPS type | |
1705 | definition, and only the type-qualifiers fully identify | |
1706 | them. We'll make the same effort at sharing. | |
1707 | FIXME: We are not doing any guessing on range types. */ | |
1708 | if (t->bt == btRange) | |
1709 | { | |
1710 | char *name; | |
1711 | ||
1712 | /* Try to cross reference this type, build new type on failure. */ | |
1713 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1714 | if (tp == (struct type *) NULL) | |
dd707e8e | 1715 | tp = init_type (type_code, 0, 0, (char *) NULL, mdebugread_objfile); |
c906108c SS |
1716 | |
1717 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1718 | Any type may be returned from cross_ref if file indirect entries |
1719 | are corrupted. */ | |
c906108c SS |
1720 | if (TYPE_CODE (tp) != TYPE_CODE_RANGE) |
1721 | { | |
23136709 | 1722 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1723 | } |
1724 | else | |
1725 | { | |
1726 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
025bb325 | 1727 | exception is if we guessed wrong re struct/union/enum. */ |
c906108c SS |
1728 | if (TYPE_CODE (tp) != type_code) |
1729 | { | |
23136709 | 1730 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1731 | TYPE_CODE (tp) = type_code; |
1732 | } | |
ee300cd4 AC |
1733 | if (TYPE_NAME (tp) == NULL |
1734 | || strcmp (TYPE_NAME (tp), name) != 0) | |
10f0c4bb TT |
1735 | TYPE_NAME (tp) |
1736 | = obstack_copy0 (&mdebugread_objfile->objfile_obstack, | |
1737 | name, strlen (name)); | |
c906108c SS |
1738 | } |
1739 | } | |
1740 | if (t->bt == btTypedef) | |
1741 | { | |
1742 | char *name; | |
1743 | ||
1744 | /* Try to cross reference this type, it should succeed. */ | |
1745 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1746 | if (tp == (struct type *) NULL) | |
1747 | { | |
23136709 | 1748 | complaint (&symfile_complaints, |
e2e0b3e5 | 1749 | _("unable to cross ref btTypedef for %s"), sym_name); |
dd707e8e | 1750 | tp = basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1751 | } |
1752 | } | |
1753 | ||
025bb325 | 1754 | /* Deal with range types. */ |
c906108c SS |
1755 | if (t->bt == btRange) |
1756 | { | |
43bbcdc2 PH |
1757 | TYPE_NFIELDS (tp) = 0; |
1758 | TYPE_RANGE_DATA (tp) = ((struct range_bounds *) | |
1759 | TYPE_ZALLOC (tp, sizeof (struct range_bounds))); | |
262452ec | 1760 | TYPE_LOW_BOUND (tp) = AUX_GET_DNLOW (bigend, ax); |
c906108c | 1761 | ax++; |
262452ec | 1762 | TYPE_HIGH_BOUND (tp) = AUX_GET_DNHIGH (bigend, ax); |
c906108c SS |
1763 | ax++; |
1764 | } | |
1765 | ||
025bb325 MS |
1766 | /* Parse all the type qualifiers now. If there are more |
1767 | than 6 the game will continue in the next aux. */ | |
c906108c SS |
1768 | |
1769 | while (1) | |
1770 | { | |
1771 | #define PARSE_TQ(tq) \ | |
1772 | if (t->tq != tqNil) \ | |
1773 | ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \ | |
1774 | else \ | |
1775 | break; | |
1776 | ||
1777 | PARSE_TQ (tq0); | |
1778 | PARSE_TQ (tq1); | |
1779 | PARSE_TQ (tq2); | |
1780 | PARSE_TQ (tq3); | |
1781 | PARSE_TQ (tq4); | |
1782 | PARSE_TQ (tq5); | |
1783 | #undef PARSE_TQ | |
1784 | ||
1785 | /* mips cc 2.x and gcc never put out continued aux entries. */ | |
1786 | if (!t->continued) | |
1787 | break; | |
1788 | ||
1789 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1790 | ax++; | |
1791 | } | |
1792 | ||
1793 | /* Complain for illegal continuations due to corrupt aux entries. */ | |
1794 | if (t->continued) | |
3e43a32a MS |
1795 | complaint (&symfile_complaints, |
1796 | _("illegal TIR continued for %s"), sym_name); | |
c5aa993b | 1797 | |
c906108c SS |
1798 | return tp; |
1799 | } | |
1800 | ||
1801 | /* Make up a complex type from a basic one. Type is passed by | |
025bb325 | 1802 | reference in TPP and side-effected as necessary. The type |
c906108c SS |
1803 | qualifier TQ says how to handle the aux symbols at AX for |
1804 | the symbol SX we are currently analyzing. BIGEND says whether | |
1805 | aux symbols are big-endian or little-endian. | |
025bb325 | 1806 | Returns the number of aux symbols we parsed. */ |
c906108c SS |
1807 | |
1808 | static int | |
fba45db2 KB |
1809 | upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend, |
1810 | char *sym_name) | |
c906108c SS |
1811 | { |
1812 | int off; | |
1813 | struct type *t; | |
1814 | ||
025bb325 | 1815 | /* Used in array processing. */ |
c906108c SS |
1816 | int rf, id; |
1817 | FDR *fh; | |
1818 | struct type *range; | |
1819 | struct type *indx; | |
1820 | int lower, upper; | |
1821 | RNDXR rndx; | |
1822 | ||
1823 | switch (tq) | |
1824 | { | |
1825 | case tqPtr: | |
1826 | t = lookup_pointer_type (*tpp); | |
1827 | *tpp = t; | |
1828 | return 0; | |
1829 | ||
1830 | case tqProc: | |
1831 | t = lookup_function_type (*tpp); | |
1832 | *tpp = t; | |
1833 | return 0; | |
1834 | ||
1835 | case tqArray: | |
1836 | off = 0; | |
1837 | ||
025bb325 | 1838 | /* Determine and record the domain type (type of index). */ |
c906108c SS |
1839 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx); |
1840 | id = rndx.index; | |
1841 | rf = rndx.rfd; | |
1842 | if (rf == 0xfff) | |
1843 | { | |
1844 | ax++; | |
1845 | rf = AUX_GET_ISYM (bigend, ax); | |
1846 | off++; | |
1847 | } | |
1848 | fh = get_rfd (fd, rf); | |
1849 | ||
1850 | indx = parse_type (fh - debug_info->fdr, | |
1851 | debug_info->external_aux + fh->iauxBase, | |
1852 | id, (int *) NULL, bigend, sym_name); | |
1853 | ||
1854 | /* The bounds type should be an integer type, but might be anything | |
c5aa993b | 1855 | else due to corrupt aux entries. */ |
c906108c SS |
1856 | if (TYPE_CODE (indx) != TYPE_CODE_INT) |
1857 | { | |
23136709 | 1858 | complaint (&symfile_complaints, |
3e43a32a MS |
1859 | _("illegal array index type for %s, assuming int"), |
1860 | sym_name); | |
dd707e8e | 1861 | indx = objfile_type (mdebugread_objfile)->builtin_int; |
c906108c SS |
1862 | } |
1863 | ||
1864 | /* Get the bounds, and create the array type. */ | |
1865 | ax++; | |
1866 | lower = AUX_GET_DNLOW (bigend, ax); | |
1867 | ax++; | |
1868 | upper = AUX_GET_DNHIGH (bigend, ax); | |
1869 | ax++; | |
1870 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ | |
1871 | ||
0c9c3474 SA |
1872 | range = create_static_range_type ((struct type *) NULL, indx, |
1873 | lower, upper); | |
c906108c SS |
1874 | |
1875 | t = create_array_type ((struct type *) NULL, *tpp, range); | |
1876 | ||
1877 | /* We used to fill in the supplied array element bitsize | |
c5aa993b JM |
1878 | here if the TYPE_LENGTH of the target type was zero. |
1879 | This happens for a `pointer to an array of anonymous structs', | |
1880 | but in this case the array element bitsize is also zero, | |
1881 | so nothing is gained. | |
1882 | And we used to check the TYPE_LENGTH of the target type against | |
1883 | the supplied array element bitsize. | |
1884 | gcc causes a mismatch for `pointer to array of object', | |
1885 | since the sdb directives it uses do not have a way of | |
1886 | specifying the bitsize, but it does no harm (the | |
1887 | TYPE_LENGTH should be correct) and we should be able to | |
1888 | ignore the erroneous bitsize from the auxiliary entry safely. | |
1889 | dbx seems to ignore it too. */ | |
c906108c | 1890 | |
d6a843b5 | 1891 | /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */ |
c906108c | 1892 | if (TYPE_LENGTH (*tpp) == 0) |
d6a843b5 | 1893 | TYPE_TARGET_STUB (t) = 1; |
c906108c SS |
1894 | |
1895 | *tpp = t; | |
1896 | return 4 + off; | |
1897 | ||
1898 | case tqVol: | |
1899 | /* Volatile -- currently ignored */ | |
1900 | return 0; | |
1901 | ||
1902 | case tqConst: | |
1903 | /* Const -- currently ignored */ | |
1904 | return 0; | |
1905 | ||
1906 | default: | |
e2e0b3e5 | 1907 | complaint (&symfile_complaints, _("unknown type qualifier 0x%x"), tq); |
c906108c SS |
1908 | return 0; |
1909 | } | |
1910 | } | |
1911 | ||
1912 | ||
1913 | /* Parse a procedure descriptor record PR. Note that the procedure is | |
1914 | parsed _after_ the local symbols, now we just insert the extra | |
f92761ec | 1915 | information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has |
c906108c SS |
1916 | already been placed in the procedure's main block. Note also that |
1917 | images that have been partially stripped (ld -x) have been deprived | |
1918 | of local symbols, and we have to cope with them here. FIRST_OFF is | |
1919 | the offset of the first procedure for this FDR; we adjust the | |
1920 | address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab | |
f92761ec | 1921 | to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol |
c906108c SS |
1922 | in question, or NULL to use top_stack->cur_block. */ |
1923 | ||
a14ed312 | 1924 | static void parse_procedure (PDR *, struct symtab *, struct partial_symtab *); |
c906108c SS |
1925 | |
1926 | static void | |
fba45db2 KB |
1927 | parse_procedure (PDR *pr, struct symtab *search_symtab, |
1928 | struct partial_symtab *pst) | |
c906108c SS |
1929 | { |
1930 | struct symbol *s, *i; | |
1931 | struct block *b; | |
c906108c SS |
1932 | char *sh_name; |
1933 | ||
025bb325 | 1934 | /* Simple rule to find files linked "-x". */ |
c906108c SS |
1935 | if (cur_fdr->rss == -1) |
1936 | { | |
1937 | if (pr->isym == -1) | |
1938 | { | |
025bb325 | 1939 | /* Static procedure at address pr->adr. Sigh. */ |
c906108c | 1940 | /* FIXME-32x64. assuming pr->adr fits in long. */ |
23136709 | 1941 | complaint (&symfile_complaints, |
e2e0b3e5 | 1942 | _("can't handle PDR for static proc at 0x%lx"), |
23136709 | 1943 | (unsigned long) pr->adr); |
c906108c SS |
1944 | return; |
1945 | } | |
1946 | else | |
1947 | { | |
1948 | /* external */ | |
1949 | EXTR she; | |
c5aa993b | 1950 | |
c906108c SS |
1951 | (*debug_swap->swap_ext_in) (cur_bfd, |
1952 | ((char *) debug_info->external_ext | |
1953 | + (pr->isym | |
1954 | * debug_swap->external_ext_size)), | |
1955 | &she); | |
1956 | sh_name = debug_info->ssext + she.asym.iss; | |
1957 | } | |
1958 | } | |
1959 | else | |
1960 | { | |
1961 | /* Full symbols */ | |
1962 | SYMR sh; | |
1963 | ||
1964 | (*debug_swap->swap_sym_in) (cur_bfd, | |
1965 | ((char *) debug_info->external_sym | |
1966 | + ((cur_fdr->isymBase + pr->isym) | |
1967 | * debug_swap->external_sym_size)), | |
1968 | &sh); | |
1969 | sh_name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
1970 | } | |
1971 | ||
1972 | if (search_symtab != NULL) | |
1973 | { | |
1974 | #if 0 | |
1975 | /* This loses both in the case mentioned (want a static, find a global), | |
c5aa993b JM |
1976 | but also if we are looking up a non-mangled name which happens to |
1977 | match the name of a mangled function. */ | |
c906108c | 1978 | /* We have to save the cur_fdr across the call to lookup_symbol. |
c5aa993b JM |
1979 | If the pdr is for a static function and if a global function with |
1980 | the same name exists, lookup_symbol will eventually read in the symtab | |
1981 | for the global function and clobber cur_fdr. */ | |
c906108c | 1982 | FDR *save_cur_fdr = cur_fdr; |
b8d56208 | 1983 | |
2570f2b7 | 1984 | s = lookup_symbol (sh_name, NULL, VAR_DOMAIN, 0); |
c906108c SS |
1985 | cur_fdr = save_cur_fdr; |
1986 | #else | |
1987 | s = mylookup_symbol | |
1988 | (sh_name, | |
1989 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK), | |
176620f1 | 1990 | VAR_DOMAIN, |
c906108c SS |
1991 | LOC_BLOCK); |
1992 | #endif | |
1993 | } | |
1994 | else | |
1995 | s = mylookup_symbol (sh_name, top_stack->cur_block, | |
176620f1 | 1996 | VAR_DOMAIN, LOC_BLOCK); |
c906108c SS |
1997 | |
1998 | if (s != 0) | |
1999 | { | |
2000 | b = SYMBOL_BLOCK_VALUE (s); | |
2001 | } | |
2002 | else | |
2003 | { | |
e2e0b3e5 | 2004 | complaint (&symfile_complaints, _("PDR for %s, but no symbol"), sh_name); |
c906108c SS |
2005 | #if 1 |
2006 | return; | |
2007 | #else | |
2008 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ | |
2009 | s = new_symbol (sh_name); | |
176620f1 | 2010 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
c906108c | 2011 | SYMBOL_CLASS (s) = LOC_BLOCK; |
025bb325 | 2012 | /* Donno its type, hope int is ok. */ |
0a9d309a | 2013 | SYMBOL_TYPE (s) |
46bf5051 | 2014 | = lookup_function_type (objfile_type (pst->objfile)->builtin_int); |
c7efd0b9 | 2015 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
025bb325 | 2016 | /* Won't have symbols for this one. */ |
c906108c SS |
2017 | b = new_block (2); |
2018 | SYMBOL_BLOCK_VALUE (s) = b; | |
2019 | BLOCK_FUNCTION (b) = s; | |
2020 | BLOCK_START (b) = pr->adr; | |
2021 | /* BOUND used to be the end of procedure's text, but the | |
c5aa993b | 2022 | argument is no longer passed in. */ |
c906108c SS |
2023 | BLOCK_END (b) = bound; |
2024 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
2025 | add_block (b, top_stack->cur_st); | |
2026 | #endif | |
2027 | } | |
2028 | ||
f92761ec | 2029 | i = mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME, b, LABEL_DOMAIN, LOC_CONST); |
c906108c SS |
2030 | |
2031 | if (i) | |
2032 | { | |
9918cab9 JB |
2033 | struct mdebug_extra_func_info *e; |
2034 | ||
2035 | e = (struct mdebug_extra_func_info *) SYMBOL_VALUE_BYTES (i); | |
c906108c | 2036 | e->pdr = *pr; |
c906108c SS |
2037 | |
2038 | /* GDB expects the absolute function start address for the | |
c5aa993b JM |
2039 | procedure descriptor in e->pdr.adr. |
2040 | As the address in the procedure descriptor is usually relative, | |
2041 | we would have to relocate e->pdr.adr with cur_fdr->adr and | |
b8fbeb18 | 2042 | ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)). |
c5aa993b JM |
2043 | Unfortunately cur_fdr->adr and e->pdr.adr are both absolute |
2044 | in shared libraries on some systems, and on other systems | |
2045 | e->pdr.adr is sometimes offset by a bogus value. | |
2046 | To work around these problems, we replace e->pdr.adr with | |
2047 | the start address of the function. */ | |
c906108c | 2048 | e->pdr.adr = BLOCK_START (b); |
c906108c SS |
2049 | } |
2050 | ||
2051 | /* It would be reasonable that functions that have been compiled | |
2052 | without debugging info have a btNil type for their return value, | |
2053 | and functions that are void and are compiled with debugging info | |
2054 | have btVoid. | |
2055 | gcc and DEC f77 put out btNil types for both cases, so btNil is mapped | |
2056 | to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info' | |
2057 | case right. | |
2058 | The glevel field in cur_fdr could be used to determine the presence | |
2059 | of debugging info, but GCC doesn't always pass the -g switch settings | |
2060 | to the assembler and GAS doesn't set the glevel field from the -g switch | |
2061 | settings. | |
2062 | To work around these problems, the return value type of a TYPE_CODE_VOID | |
2063 | function is adjusted accordingly if no debugging info was found in the | |
2064 | compilation unit. */ | |
c5aa993b | 2065 | |
c906108c SS |
2066 | if (processing_gcc_compilation == 0 |
2067 | && found_ecoff_debugging_info == 0 | |
2068 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID) | |
5c80ed9d | 2069 | SYMBOL_TYPE (s) = objfile_type (mdebugread_objfile)->nodebug_text_symbol; |
c906108c SS |
2070 | } |
2071 | ||
025bb325 | 2072 | /* Parse the external symbol ES. Just call parse_symbol() after |
c906108c SS |
2073 | making sure we know where the aux are for it. |
2074 | BIGEND says whether aux entries are big-endian or little-endian. | |
2075 | ||
025bb325 | 2076 | This routine clobbers top_stack->cur_block and ->cur_st. */ |
c906108c | 2077 | |
a14ed312 KB |
2078 | static void parse_external (EXTR *, int, struct section_offsets *, |
2079 | struct objfile *); | |
c906108c SS |
2080 | |
2081 | static void | |
fba45db2 KB |
2082 | parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets, |
2083 | struct objfile *objfile) | |
c906108c SS |
2084 | { |
2085 | union aux_ext *ax; | |
2086 | ||
2087 | if (es->ifd != ifdNil) | |
2088 | { | |
2089 | cur_fd = es->ifd; | |
2090 | cur_fdr = debug_info->fdr + cur_fd; | |
2091 | ax = debug_info->external_aux + cur_fdr->iauxBase; | |
2092 | } | |
2093 | else | |
2094 | { | |
2095 | cur_fdr = debug_info->fdr; | |
2096 | ax = 0; | |
2097 | } | |
2098 | ||
2099 | /* Reading .o files */ | |
c5aa993b | 2100 | if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil) |
c906108c SS |
2101 | { |
2102 | char *what; | |
2103 | switch (es->asym.st) | |
2104 | { | |
2105 | case stNil: | |
2106 | /* These are generated for static symbols in .o files, | |
2107 | ignore them. */ | |
2108 | return; | |
2109 | case stStaticProc: | |
2110 | case stProc: | |
2111 | what = "procedure"; | |
2112 | n_undef_procs++; | |
2113 | break; | |
2114 | case stGlobal: | |
2115 | what = "variable"; | |
2116 | n_undef_vars++; | |
2117 | break; | |
2118 | case stLabel: | |
2119 | what = "label"; | |
2120 | n_undef_labels++; | |
2121 | break; | |
2122 | default: | |
2123 | what = "symbol"; | |
2124 | break; | |
2125 | } | |
2126 | n_undef_symbols++; | |
025bb325 | 2127 | /* FIXME: Turn this into a complaint? */ |
c906108c | 2128 | if (info_verbose) |
a3f17187 | 2129 | printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"), |
c906108c SS |
2130 | what, debug_info->ssext + es->asym.iss, |
2131 | fdr_name (cur_fdr)); | |
2132 | return; | |
2133 | } | |
2134 | ||
2135 | switch (es->asym.st) | |
2136 | { | |
2137 | case stProc: | |
2138 | case stStaticProc: | |
2139 | /* There is no need to parse the external procedure symbols. | |
c5aa993b JM |
2140 | If they are from objects compiled without -g, their index will |
2141 | be indexNil, and the symbol definition from the minimal symbol | |
2142 | is preferrable (yielding a function returning int instead of int). | |
2143 | If the index points to a local procedure symbol, the local | |
2144 | symbol already provides the correct type. | |
2145 | Note that the index of the external procedure symbol points | |
2146 | to the local procedure symbol in the local symbol table, and | |
2147 | _not_ to the auxiliary symbol info. */ | |
c906108c SS |
2148 | break; |
2149 | case stGlobal: | |
2150 | case stLabel: | |
2151 | /* Global common symbols are resolved by the runtime loader, | |
c5aa993b JM |
2152 | ignore them. */ |
2153 | if (SC_IS_COMMON (es->asym.sc)) | |
c906108c SS |
2154 | break; |
2155 | ||
2156 | /* Note that the case of a symbol with indexNil must be handled | |
c5aa993b | 2157 | anyways by parse_symbol(). */ |
3e43a32a MS |
2158 | parse_symbol (&es->asym, ax, (char *) NULL, |
2159 | bigend, section_offsets, objfile); | |
c906108c SS |
2160 | break; |
2161 | default: | |
2162 | break; | |
2163 | } | |
2164 | } | |
2165 | ||
2166 | /* Parse the line number info for file descriptor FH into | |
2167 | GDB's linetable LT. MIPS' encoding requires a little bit | |
2168 | of magic to get things out. Note also that MIPS' line | |
2169 | numbers can go back and forth, apparently we can live | |
025bb325 | 2170 | with that and do not need to reorder our linetables. */ |
c906108c | 2171 | |
a14ed312 KB |
2172 | static void parse_lines (FDR *, PDR *, struct linetable *, int, |
2173 | struct partial_symtab *, CORE_ADDR); | |
c906108c SS |
2174 | |
2175 | static void | |
fba45db2 KB |
2176 | parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines, |
2177 | struct partial_symtab *pst, CORE_ADDR lowest_pdr_addr) | |
c906108c SS |
2178 | { |
2179 | unsigned char *base; | |
2180 | int j, k; | |
2181 | int delta, count, lineno = 0; | |
2182 | ||
2183 | if (fh->cbLine == 0) | |
2184 | return; | |
2185 | ||
025bb325 | 2186 | /* Scan by procedure descriptors. */ |
c906108c SS |
2187 | k = 0; |
2188 | for (j = 0; j < fh->cpd; j++, pr++) | |
2189 | { | |
2190 | CORE_ADDR l; | |
2191 | CORE_ADDR adr; | |
2192 | unsigned char *halt; | |
2193 | ||
025bb325 | 2194 | /* No code for this one. */ |
c906108c SS |
2195 | if (pr->iline == ilineNil || |
2196 | pr->lnLow == -1 || pr->lnHigh == -1) | |
2197 | continue; | |
2198 | ||
2199 | /* Determine start and end address of compressed line bytes for | |
c5aa993b | 2200 | this procedure. */ |
c906108c SS |
2201 | base = debug_info->line + fh->cbLineOffset; |
2202 | if (j != (fh->cpd - 1)) | |
c5aa993b | 2203 | halt = base + pr[1].cbLineOffset; |
c906108c | 2204 | else |
c5aa993b | 2205 | halt = base + fh->cbLine; |
c906108c SS |
2206 | base += pr->cbLineOffset; |
2207 | ||
5afc051b | 2208 | adr = pst->textlow + pr->adr - lowest_pdr_addr; |
c906108c SS |
2209 | |
2210 | l = adr >> 2; /* in words */ | |
c5aa993b | 2211 | for (lineno = pr->lnLow; base < halt;) |
c906108c SS |
2212 | { |
2213 | count = *base & 0x0f; | |
2214 | delta = *base++ >> 4; | |
2215 | if (delta >= 8) | |
2216 | delta -= 16; | |
2217 | if (delta == -8) | |
2218 | { | |
2219 | delta = (base[0] << 8) | base[1]; | |
2220 | if (delta >= 0x8000) | |
2221 | delta -= 0x10000; | |
2222 | base += 2; | |
2223 | } | |
2224 | lineno += delta; /* first delta is 0 */ | |
2225 | ||
025bb325 | 2226 | /* Complain if the line table overflows. Could happen |
c906108c SS |
2227 | with corrupt binaries. */ |
2228 | if (lt->nitems >= maxlines) | |
2229 | { | |
23136709 | 2230 | complaint (&symfile_complaints, |
e2e0b3e5 | 2231 | _("guessed size of linetable for %s incorrectly"), |
23136709 | 2232 | fdr_name (fh)); |
c906108c SS |
2233 | break; |
2234 | } | |
2235 | k = add_line (lt, lineno, l, k); | |
2236 | l += count + 1; | |
2237 | } | |
2238 | } | |
2239 | } | |
2240 | \f | |
23136709 KB |
2241 | static void |
2242 | function_outside_compilation_unit_complaint (const char *arg1) | |
2243 | { | |
2244 | complaint (&symfile_complaints, | |
3e43a32a MS |
2245 | _("function `%s' appears to be defined " |
2246 | "outside of all compilation units"), | |
23136709 KB |
2247 | arg1); |
2248 | } | |
2249 | ||
1f9872de JB |
2250 | /* Use the STORAGE_CLASS to compute which section the given symbol |
2251 | belongs to, and then records this new minimal symbol. */ | |
2252 | ||
2253 | static void | |
2254 | record_minimal_symbol (const char *name, const CORE_ADDR address, | |
2255 | enum minimal_symbol_type ms_type, int storage_class, | |
2256 | struct objfile *objfile) | |
2257 | { | |
2258 | int section; | |
1f9872de JB |
2259 | |
2260 | switch (storage_class) | |
2261 | { | |
2262 | case scText: | |
2263 | section = SECT_OFF_TEXT (objfile); | |
1f9872de JB |
2264 | break; |
2265 | case scData: | |
2266 | section = SECT_OFF_DATA (objfile); | |
1f9872de JB |
2267 | break; |
2268 | case scBss: | |
2269 | section = SECT_OFF_BSS (objfile); | |
1f9872de JB |
2270 | break; |
2271 | case scSData: | |
2272 | section = get_section_index (objfile, ".sdata"); | |
1f9872de JB |
2273 | break; |
2274 | case scSBss: | |
2275 | section = get_section_index (objfile, ".sbss"); | |
1f9872de JB |
2276 | break; |
2277 | case scRData: | |
2278 | section = get_section_index (objfile, ".rdata"); | |
1f9872de JB |
2279 | break; |
2280 | case scInit: | |
2281 | section = get_section_index (objfile, ".init"); | |
1f9872de JB |
2282 | break; |
2283 | case scXData: | |
2284 | section = get_section_index (objfile, ".xdata"); | |
1f9872de JB |
2285 | break; |
2286 | case scPData: | |
2287 | section = get_section_index (objfile, ".pdata"); | |
1f9872de JB |
2288 | break; |
2289 | case scFini: | |
2290 | section = get_section_index (objfile, ".fini"); | |
1f9872de JB |
2291 | break; |
2292 | case scRConst: | |
2293 | section = get_section_index (objfile, ".rconst"); | |
1f9872de JB |
2294 | break; |
2295 | #ifdef scTlsData | |
2296 | case scTlsData: | |
2297 | section = get_section_index (objfile, ".tlsdata"); | |
1f9872de JB |
2298 | break; |
2299 | #endif | |
2300 | #ifdef scTlsBss | |
2301 | case scTlsBss: | |
2302 | section = get_section_index (objfile, ".tlsbss"); | |
1f9872de JB |
2303 | break; |
2304 | #endif | |
2305 | default: | |
2306 | /* This kind of symbol is not associated to a section. */ | |
2307 | section = -1; | |
1f9872de JB |
2308 | } |
2309 | ||
b887350f | 2310 | prim_record_minimal_symbol_and_info (name, address, ms_type, |
e6dc44a8 | 2311 | section, objfile); |
1f9872de JB |
2312 | } |
2313 | ||
c906108c SS |
2314 | /* Master parsing procedure for first-pass reading of file symbols |
2315 | into a partial_symtab. */ | |
2316 | ||
2317 | static void | |
fba45db2 | 2318 | parse_partial_symbols (struct objfile *objfile) |
c906108c | 2319 | { |
5e2b427d | 2320 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
2321 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; |
2322 | const bfd_size_type external_rfd_size = debug_swap->external_rfd_size; | |
2323 | const bfd_size_type external_ext_size = debug_swap->external_ext_size; | |
12b9c64f AO |
2324 | void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in; |
2325 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; | |
2326 | void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in; | |
c906108c SS |
2327 | int f_idx, s_idx; |
2328 | HDRR *hdr = &debug_info->symbolic_header; | |
2329 | /* Running pointers */ | |
2330 | FDR *fh; | |
2331 | char *ext_out; | |
2332 | char *ext_out_end; | |
2333 | EXTR *ext_block; | |
52f0bd74 | 2334 | EXTR *ext_in; |
c906108c SS |
2335 | EXTR *ext_in_end; |
2336 | SYMR sh; | |
2337 | struct partial_symtab *pst; | |
2338 | int textlow_not_set = 1; | |
2339 | int past_first_source_file = 0; | |
2340 | ||
025bb325 | 2341 | /* List of current psymtab's include files. */ |
0d5cff50 | 2342 | const char **psymtab_include_list; |
c906108c SS |
2343 | int includes_allocated; |
2344 | int includes_used; | |
2345 | EXTR *extern_tab; | |
2346 | struct pst_map *fdr_to_pst; | |
025bb325 | 2347 | /* Index within current psymtab dependency list. */ |
c906108c SS |
2348 | struct partial_symtab **dependency_list; |
2349 | int dependencies_used, dependencies_allocated; | |
2350 | struct cleanup *old_chain; | |
2351 | char *name; | |
2352 | enum language prev_language; | |
2353 | asection *text_sect; | |
2354 | int relocatable = 0; | |
2355 | ||
2356 | /* Irix 5.2 shared libraries have a fh->adr field of zero, but | |
2357 | the shared libraries are prelinked at a high memory address. | |
2358 | We have to adjust the start address of the object file for this case, | |
2359 | by setting it to the start address of the first procedure in the file. | |
2360 | But we should do no adjustments if we are debugging a .o file, where | |
2361 | the text section (and fh->adr) really starts at zero. */ | |
2362 | text_sect = bfd_get_section_by_name (cur_bfd, ".text"); | |
2363 | if (text_sect != NULL | |
2364 | && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC)) | |
2365 | relocatable = 1; | |
2366 | ||
8b92e4d5 | 2367 | extern_tab = (EXTR *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2368 | sizeof (EXTR) * hdr->iextMax); |
2369 | ||
2370 | includes_allocated = 30; | |
2371 | includes_used = 0; | |
0d5cff50 DE |
2372 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2373 | sizeof (const char *)); | |
c906108c SS |
2374 | next_symbol_text_func = mdebug_next_symbol_text; |
2375 | ||
2376 | dependencies_allocated = 30; | |
2377 | dependencies_used = 0; | |
2378 | dependency_list = | |
2379 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2380 | sizeof (struct partial_symtab *)); | |
2381 | ||
46212e0b | 2382 | set_last_source_file (NULL); |
c906108c SS |
2383 | |
2384 | /* | |
2385 | * Big plan: | |
2386 | * | |
2387 | * Only parse the Local and External symbols, and the Relative FDR. | |
2388 | * Fixup enough of the loader symtab to be able to use it. | |
2389 | * Allocate space only for the file's portions we need to | |
025bb325 | 2390 | * look at. (XXX) |
c906108c SS |
2391 | */ |
2392 | ||
2393 | max_gdbinfo = 0; | |
2394 | max_glevel = MIN_GLEVEL; | |
2395 | ||
2396 | /* Allocate the map FDR -> PST. | |
2397 | Minor hack: -O3 images might claim some global data belongs | |
025bb325 | 2398 | to FDR -1. We`ll go along with that. */ |
3e43a32a MS |
2399 | fdr_to_pst = (struct pst_map *) |
2400 | xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst); | |
b8c9b27d | 2401 | old_chain = make_cleanup (xfree, fdr_to_pst); |
c906108c SS |
2402 | fdr_to_pst++; |
2403 | { | |
d4f3574e | 2404 | struct partial_symtab *pst = new_psymtab ("", objfile); |
b8d56208 | 2405 | |
c906108c SS |
2406 | fdr_to_pst[-1].pst = pst; |
2407 | FDR_IDX (pst) = -1; | |
2408 | } | |
2409 | ||
2410 | /* Allocate the global pending list. */ | |
2411 | pending_list = | |
2412 | ((struct mdebug_pending **) | |
8b92e4d5 | 2413 | obstack_alloc (&objfile->objfile_obstack, |
c906108c | 2414 | hdr->ifdMax * sizeof (struct mdebug_pending *))); |
12b9c64f | 2415 | memset (pending_list, 0, |
c906108c SS |
2416 | hdr->ifdMax * sizeof (struct mdebug_pending *)); |
2417 | ||
2418 | /* Pass 0 over external syms: swap them in. */ | |
2419 | ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR)); | |
b8c9b27d | 2420 | make_cleanup (xfree, ext_block); |
c906108c SS |
2421 | |
2422 | ext_out = (char *) debug_info->external_ext; | |
2423 | ext_out_end = ext_out + hdr->iextMax * external_ext_size; | |
2424 | ext_in = ext_block; | |
2425 | for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) | |
2426 | (*swap_ext_in) (cur_bfd, ext_out, ext_in); | |
2427 | ||
025bb325 | 2428 | /* Pass 1 over external syms: Presize and partition the list. */ |
c906108c SS |
2429 | ext_in = ext_block; |
2430 | ext_in_end = ext_in + hdr->iextMax; | |
2431 | for (; ext_in < ext_in_end; ext_in++) | |
2432 | { | |
2433 | /* See calls to complain below. */ | |
2434 | if (ext_in->ifd >= -1 | |
2435 | && ext_in->ifd < hdr->ifdMax | |
2436 | && ext_in->asym.iss >= 0 | |
2437 | && ext_in->asym.iss < hdr->issExtMax) | |
2438 | fdr_to_pst[ext_in->ifd].n_globals++; | |
2439 | } | |
2440 | ||
025bb325 | 2441 | /* Pass 1.5 over files: partition out global symbol space. */ |
c906108c SS |
2442 | s_idx = 0; |
2443 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) | |
2444 | { | |
2445 | fdr_to_pst[f_idx].globals_offset = s_idx; | |
2446 | s_idx += fdr_to_pst[f_idx].n_globals; | |
2447 | fdr_to_pst[f_idx].n_globals = 0; | |
2448 | } | |
2449 | ||
2450 | /* ECOFF in ELF: | |
2451 | ||
2452 | For ECOFF in ELF, we skip the creation of the minimal symbols. | |
2453 | The ECOFF symbols should be a subset of the Elf symbols, and the | |
2454 | section information of the elf symbols will be more accurate. | |
2455 | FIXME! What about Irix 5's native linker? | |
2456 | ||
2457 | By default, Elf sections which don't exist in ECOFF | |
2458 | get put in ECOFF's absolute section by the gnu linker. | |
2459 | Since absolute sections don't get relocated, we | |
2460 | end up calculating an address different from that of | |
2461 | the symbol's minimal symbol (created earlier from the | |
025bb325 | 2462 | Elf symtab). |
c906108c SS |
2463 | |
2464 | To fix this, either : | |
2465 | 1) don't create the duplicate symbol | |
c5aa993b JM |
2466 | (assumes ECOFF symtab is a subset of the ELF symtab; |
2467 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2468 | 2) create it, only if lookup for existing symbol in ELF's minimal |
c5aa993b JM |
2469 | symbols fails |
2470 | (inefficient; | |
2471 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2472 | 3) create it, but lookup ELF's minimal symbol and use it's section |
c5aa993b JM |
2473 | during relocation, then modify "uniqify" phase to merge and |
2474 | eliminate the duplicate symbol | |
2475 | (highly inefficient) | |
c906108c SS |
2476 | |
2477 | I've implemented #1 here... | |
2478 | Skip the creation of the minimal symbols based on the ECOFF | |
025bb325 | 2479 | symbol table. */ |
c906108c | 2480 | |
025bb325 | 2481 | /* Pass 2 over external syms: fill in external symbols. */ |
c5aa993b JM |
2482 | ext_in = ext_block; |
2483 | ext_in_end = ext_in + hdr->iextMax; | |
2484 | for (; ext_in < ext_in_end; ext_in++) | |
2485 | { | |
2486 | enum minimal_symbol_type ms_type = mst_text; | |
2487 | CORE_ADDR svalue = ext_in->asym.value; | |
c906108c | 2488 | |
c5aa993b JM |
2489 | /* The Irix 5 native tools seem to sometimes generate bogus |
2490 | external symbols. */ | |
2491 | if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax) | |
2492 | { | |
23136709 | 2493 | complaint (&symfile_complaints, |
3e43a32a MS |
2494 | _("bad ifd for external symbol: %d (max %ld)"), |
2495 | ext_in->ifd, hdr->ifdMax); | |
c5aa993b JM |
2496 | continue; |
2497 | } | |
2498 | if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax) | |
2499 | { | |
23136709 | 2500 | complaint (&symfile_complaints, |
e2e0b3e5 | 2501 | _("bad iss for external symbol: %ld (max %ld)"), |
23136709 | 2502 | ext_in->asym.iss, hdr->issExtMax); |
c5aa993b JM |
2503 | continue; |
2504 | } | |
c906108c | 2505 | |
c5aa993b JM |
2506 | extern_tab[fdr_to_pst[ext_in->ifd].globals_offset |
2507 | + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; | |
c906108c SS |
2508 | |
2509 | ||
c5aa993b JM |
2510 | if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil) |
2511 | continue; | |
c906108c | 2512 | |
c906108c | 2513 | |
025bb325 | 2514 | /* Pass 3 over files, over local syms: fill in static symbols. */ |
c5aa993b JM |
2515 | name = debug_info->ssext + ext_in->asym.iss; |
2516 | ||
025bb325 | 2517 | /* Process ECOFF Symbol Types and Storage Classes. */ |
c5aa993b JM |
2518 | switch (ext_in->asym.st) |
2519 | { | |
2520 | case stProc: | |
2521 | /* Beginnning of Procedure */ | |
c5aa993b JM |
2522 | break; |
2523 | case stStaticProc: | |
2524 | /* Load time only static procs */ | |
2525 | ms_type = mst_file_text; | |
c5aa993b JM |
2526 | break; |
2527 | case stGlobal: | |
2528 | /* External symbol */ | |
2529 | if (SC_IS_COMMON (ext_in->asym.sc)) | |
2530 | { | |
2531 | /* The value of a common symbol is its size, not its address. | |
2532 | Ignore it. */ | |
c906108c | 2533 | continue; |
c5aa993b JM |
2534 | } |
2535 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2536 | { | |
2537 | ms_type = mst_data; | |
c5aa993b JM |
2538 | } |
2539 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2540 | { | |
2541 | ms_type = mst_bss; | |
c5aa993b | 2542 | } |
0e931cf0 JB |
2543 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2544 | { | |
2545 | ms_type = mst_bss; | |
0e931cf0 | 2546 | } |
c5aa993b JM |
2547 | else |
2548 | ms_type = mst_abs; | |
2549 | break; | |
2550 | case stLabel: | |
2551 | /* Label */ | |
0e931cf0 JB |
2552 | |
2553 | /* On certain platforms, some extra label symbols can be | |
025bb325 | 2554 | generated by the linker. One possible usage for this kind |
0e931cf0 | 2555 | of symbols is to represent the address of the begining of a |
025bb325 | 2556 | given section. For instance, on Tru64 5.1, the address of |
0e931cf0 JB |
2557 | the _ftext label is the start address of the .text section. |
2558 | ||
2559 | The storage class of these symbols is usually directly | |
025bb325 | 2560 | related to the section to which the symbol refers. For |
0e931cf0 JB |
2561 | instance, on Tru64 5.1, the storage class for the _fdata |
2562 | label is scData, refering to the .data section. | |
2563 | ||
2564 | It is actually possible that the section associated to the | |
025bb325 | 2565 | storage class of the label does not exist. On True64 5.1 |
0e931cf0 JB |
2566 | for instance, the libm.so shared library does not contain |
2567 | any .data section, although it contains a _fpdata label | |
025bb325 | 2568 | which storage class is scData... Since these symbols are |
0e931cf0 | 2569 | usually useless for the debugger user anyway, we just |
025bb325 | 2570 | discard these symbols. */ |
0e931cf0 | 2571 | |
c5aa993b JM |
2572 | if (SC_IS_TEXT (ext_in->asym.sc)) |
2573 | { | |
0e931cf0 JB |
2574 | if (objfile->sect_index_text == -1) |
2575 | continue; | |
2576 | ||
c5aa993b | 2577 | ms_type = mst_file_text; |
c5aa993b JM |
2578 | } |
2579 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2580 | { | |
0e931cf0 JB |
2581 | if (objfile->sect_index_data == -1) |
2582 | continue; | |
2583 | ||
c5aa993b | 2584 | ms_type = mst_file_data; |
c5aa993b JM |
2585 | } |
2586 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2587 | { | |
0e931cf0 JB |
2588 | if (objfile->sect_index_bss == -1) |
2589 | continue; | |
2590 | ||
c5aa993b | 2591 | ms_type = mst_file_bss; |
c5aa993b | 2592 | } |
0e931cf0 JB |
2593 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2594 | { | |
2595 | const int sbss_sect_index = get_section_index (objfile, ".sbss"); | |
2596 | ||
2597 | if (sbss_sect_index == -1) | |
2598 | continue; | |
2599 | ||
2600 | ms_type = mst_file_bss; | |
0e931cf0 | 2601 | } |
c5aa993b JM |
2602 | else |
2603 | ms_type = mst_abs; | |
2604 | break; | |
2605 | case stLocal: | |
2606 | case stNil: | |
2607 | /* The alpha has the section start addresses in stLocal symbols | |
025bb325 | 2608 | whose name starts with a `.'. Skip those but complain for all |
c5aa993b JM |
2609 | other stLocal symbols. |
2610 | Irix6 puts the section start addresses in stNil symbols, skip | |
025bb325 | 2611 | those too. */ |
c5aa993b JM |
2612 | if (name[0] == '.') |
2613 | continue; | |
2614 | /* Fall through. */ | |
2615 | default: | |
2616 | ms_type = mst_unknown; | |
23136709 | 2617 | unknown_ext_complaint (name); |
c5aa993b JM |
2618 | } |
2619 | if (!ECOFF_IN_ELF (cur_bfd)) | |
1f9872de JB |
2620 | record_minimal_symbol (name, svalue, ms_type, ext_in->asym.sc, |
2621 | objfile); | |
c5aa993b | 2622 | } |
c906108c | 2623 | |
025bb325 | 2624 | /* Pass 3 over files, over local syms: fill in static symbols. */ |
c906108c SS |
2625 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) |
2626 | { | |
2627 | struct partial_symtab *save_pst; | |
2628 | EXTR *ext_ptr; | |
2629 | CORE_ADDR textlow; | |
2630 | ||
2631 | cur_fdr = fh = debug_info->fdr + f_idx; | |
2632 | ||
2633 | if (fh->csym == 0) | |
2634 | { | |
2635 | fdr_to_pst[f_idx].pst = NULL; | |
2636 | continue; | |
2637 | } | |
2638 | ||
2639 | /* Determine the start address for this object file from the | |
c5aa993b | 2640 | file header and relocate it, except for Irix 5.2 zero fh->adr. */ |
c906108c SS |
2641 | if (fh->cpd) |
2642 | { | |
2643 | textlow = fh->adr; | |
2644 | if (relocatable || textlow != 0) | |
3e43a32a MS |
2645 | textlow += ANOFFSET (objfile->section_offsets, |
2646 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2647 | } |
2648 | else | |
2649 | textlow = 0; | |
d4f3574e | 2650 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
c906108c SS |
2651 | fdr_name (fh), |
2652 | textlow, | |
2653 | objfile->global_psymbols.next, | |
2654 | objfile->static_psymbols.next); | |
e38df1d0 TT |
2655 | pst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2656 | sizeof (struct symloc)); | |
12b9c64f | 2657 | memset (pst->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
2658 | |
2659 | save_pst = pst; | |
2660 | FDR_IDX (pst) = f_idx; | |
2661 | CUR_BFD (pst) = cur_bfd; | |
2662 | DEBUG_SWAP (pst) = debug_swap; | |
2663 | DEBUG_INFO (pst) = debug_info; | |
2664 | PENDING_LIST (pst) = pending_list; | |
2665 | ||
025bb325 | 2666 | /* The way to turn this into a symtab is to call... */ |
257e7a09 | 2667 | pst->read_symtab = mdebug_read_symtab; |
c906108c SS |
2668 | |
2669 | /* Set up language for the pst. | |
2670 | The language from the FDR is used if it is unambigious (e.g. cfront | |
c5aa993b JM |
2671 | with native cc and g++ will set the language to C). |
2672 | Otherwise we have to deduce the language from the filename. | |
2673 | Native ecoff has every header file in a separate FDR, so | |
2674 | deduce_language_from_filename will return language_unknown for | |
2675 | a header file, which is not what we want. | |
2676 | But the FDRs for the header files are after the FDR for the source | |
2677 | file, so we can assign the language of the source file to the | |
025bb325 | 2678 | following header files. Then we save the language in the private |
c5aa993b | 2679 | pst data so that we can reuse it when building symtabs. */ |
c906108c SS |
2680 | prev_language = psymtab_language; |
2681 | ||
2682 | switch (fh->lang) | |
2683 | { | |
2684 | case langCplusplusV2: | |
2685 | psymtab_language = language_cplus; | |
2686 | break; | |
2687 | default: | |
2688 | psymtab_language = deduce_language_from_filename (fdr_name (fh)); | |
2689 | break; | |
2690 | } | |
2691 | if (psymtab_language == language_unknown) | |
2692 | psymtab_language = prev_language; | |
2693 | PST_PRIVATE (pst)->pst_language = psymtab_language; | |
2694 | ||
5afc051b | 2695 | pst->texthigh = pst->textlow; |
c906108c SS |
2696 | |
2697 | /* For stabs-in-ecoff files, the second symbol must be @stab. | |
c5aa993b JM |
2698 | This symbol is emitted by mips-tfile to signal that the |
2699 | current object file uses encapsulated stabs instead of mips | |
2700 | ecoff for local symbols. (It is the second symbol because | |
2701 | the first symbol is the stFile used to signal the start of a | |
025bb325 | 2702 | file). */ |
c906108c SS |
2703 | processing_gcc_compilation = 0; |
2704 | if (fh->csym >= 2) | |
2705 | { | |
2706 | (*swap_sym_in) (cur_bfd, | |
2707 | ((char *) debug_info->external_sym | |
2708 | + (fh->isymBase + 1) * external_sym_size), | |
2709 | &sh); | |
ee300cd4 AC |
2710 | if (strcmp (debug_info->ss + fh->issBase + sh.iss, |
2711 | stabs_symbol) == 0) | |
c906108c SS |
2712 | processing_gcc_compilation = 2; |
2713 | } | |
2714 | ||
2715 | if (processing_gcc_compilation != 0) | |
2716 | { | |
2717 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
2718 | { | |
2719 | int type_code; | |
0d5cff50 | 2720 | const char *namestring; |
c906108c SS |
2721 | |
2722 | (*swap_sym_in) (cur_bfd, | |
2723 | (((char *) debug_info->external_sym) | |
c5aa993b | 2724 | + (fh->isymBase + cur_sdx) * external_sym_size), |
c906108c SS |
2725 | &sh); |
2726 | type_code = ECOFF_UNMARK_STAB (sh.index); | |
2727 | if (!ECOFF_IS_STAB (&sh)) | |
2728 | { | |
2729 | if (sh.st == stProc || sh.st == stStaticProc) | |
2730 | { | |
2731 | CORE_ADDR procaddr; | |
2732 | long isym; | |
c5aa993b | 2733 | |
c906108c SS |
2734 | if (sh.st == stStaticProc) |
2735 | { | |
2736 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
1f9872de JB |
2737 | record_minimal_symbol (namestring, sh.value, |
2738 | mst_file_text, sh.sc, | |
2739 | objfile); | |
c906108c | 2740 | } |
2273f0ac TT |
2741 | sh.value += ANOFFSET (objfile->section_offsets, |
2742 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2743 | procaddr = sh.value; |
2744 | ||
2745 | isym = AUX_GET_ISYM (fh->fBigendian, | |
2746 | (debug_info->external_aux | |
2747 | + fh->iauxBase | |
2748 | + sh.index)); | |
2749 | (*swap_sym_in) (cur_bfd, | |
2750 | ((char *) debug_info->external_sym | |
2751 | + ((fh->isymBase + isym - 1) | |
2752 | * external_sym_size)), | |
2753 | &sh); | |
2754 | if (sh.st == stEnd) | |
2755 | { | |
2756 | CORE_ADDR high = procaddr + sh.value; | |
2757 | ||
c5aa993b | 2758 | /* Kludge for Irix 5.2 zero fh->adr. */ |
c906108c | 2759 | if (!relocatable |
5afc051b JB |
2760 | && (pst->textlow == 0 || procaddr < pst->textlow)) |
2761 | pst->textlow = procaddr; | |
2762 | if (high > pst->texthigh) | |
2763 | pst->texthigh = high; | |
c906108c SS |
2764 | } |
2765 | } | |
2766 | else if (sh.st == stStatic) | |
2767 | { | |
2768 | switch (sh.sc) | |
2769 | { | |
2770 | case scUndefined: | |
2771 | case scSUndefined: | |
2772 | case scNil: | |
2773 | case scAbs: | |
2774 | break; | |
2775 | ||
2776 | case scData: | |
2777 | case scSData: | |
2778 | case scRData: | |
2779 | case scPData: | |
2780 | case scXData: | |
2781 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
1f9872de JB |
2782 | record_minimal_symbol (namestring, sh.value, |
2783 | mst_file_data, sh.sc, | |
2784 | objfile); | |
2273f0ac TT |
2785 | sh.value += ANOFFSET (objfile->section_offsets, |
2786 | SECT_OFF_DATA (objfile)); | |
c906108c SS |
2787 | break; |
2788 | ||
2789 | default: | |
2790 | /* FIXME! Shouldn't this use cases for bss, | |
025bb325 | 2791 | then have the default be abs? */ |
c906108c | 2792 | namestring = debug_info->ss + fh->issBase + sh.iss; |
1f9872de JB |
2793 | record_minimal_symbol (namestring, sh.value, |
2794 | mst_file_bss, sh.sc, | |
2795 | objfile); | |
2273f0ac TT |
2796 | sh.value += ANOFFSET (objfile->section_offsets, |
2797 | SECT_OFF_BSS (objfile)); | |
c906108c SS |
2798 | break; |
2799 | } | |
2800 | } | |
2801 | continue; | |
2802 | } | |
025bb325 | 2803 | /* Handle stabs continuation. */ |
c906108c SS |
2804 | { |
2805 | char *stabstring = debug_info->ss + fh->issBase + sh.iss; | |
2806 | int len = strlen (stabstring); | |
b8d56208 | 2807 | |
c5aa993b | 2808 | while (stabstring[len - 1] == '\\') |
c906108c SS |
2809 | { |
2810 | SYMR sh2; | |
2811 | char *stabstring1 = stabstring; | |
2812 | char *stabstring2; | |
2813 | int len2; | |
2814 | ||
025bb325 | 2815 | /* Ignore continuation char from 1st string. */ |
c906108c SS |
2816 | len--; |
2817 | ||
025bb325 | 2818 | /* Read next stabstring. */ |
c906108c SS |
2819 | cur_sdx++; |
2820 | (*swap_sym_in) (cur_bfd, | |
2821 | (((char *) debug_info->external_sym) | |
c5aa993b | 2822 | + (fh->isymBase + cur_sdx) |
c906108c SS |
2823 | * external_sym_size), |
2824 | &sh2); | |
2825 | stabstring2 = debug_info->ss + fh->issBase + sh2.iss; | |
2826 | len2 = strlen (stabstring2); | |
2827 | ||
025bb325 | 2828 | /* Concatinate stabstring2 with stabstring1. */ |
c906108c | 2829 | if (stabstring |
c5aa993b | 2830 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
c906108c SS |
2831 | stabstring = xrealloc (stabstring, len + len2 + 1); |
2832 | else | |
86f902e0 FF |
2833 | { |
2834 | stabstring = xmalloc (len + len2 + 1); | |
2835 | strcpy (stabstring, stabstring1); | |
2836 | } | |
c906108c SS |
2837 | strcpy (stabstring + len, stabstring2); |
2838 | len += len2; | |
2839 | } | |
2840 | ||
d3119d1e EZ |
2841 | switch (type_code) |
2842 | { | |
d3119d1e | 2843 | char *p; |
b8d56208 | 2844 | |
3e43a32a | 2845 | /* Standard, external, non-debugger, symbols. */ |
d3119d1e EZ |
2846 | |
2847 | case N_TEXT | N_EXT: | |
2848 | case N_NBTEXT | N_EXT: | |
3e43a32a MS |
2849 | sh.value += ANOFFSET (objfile->section_offsets, |
2850 | SECT_OFF_TEXT (objfile)); | |
d3119d1e EZ |
2851 | goto record_it; |
2852 | ||
2853 | case N_DATA | N_EXT: | |
2854 | case N_NBDATA | N_EXT: | |
3e43a32a MS |
2855 | sh.value += ANOFFSET (objfile->section_offsets, |
2856 | SECT_OFF_DATA (objfile)); | |
d3119d1e EZ |
2857 | goto record_it; |
2858 | ||
2859 | case N_BSS: | |
2860 | case N_BSS | N_EXT: | |
2861 | case N_NBBSS | N_EXT: | |
025bb325 | 2862 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ |
3e43a32a MS |
2863 | sh.value += ANOFFSET (objfile->section_offsets, |
2864 | SECT_OFF_BSS (objfile)); | |
d3119d1e EZ |
2865 | goto record_it; |
2866 | ||
2867 | case N_ABS | N_EXT: | |
2868 | record_it: | |
b98bd911 | 2869 | continue; |
d3119d1e | 2870 | |
025bb325 | 2871 | /* Standard, local, non-debugger, symbols. */ |
d3119d1e EZ |
2872 | |
2873 | case N_NBTEXT: | |
2874 | ||
3e43a32a MS |
2875 | /* We need to be able to deal with both N_FN or |
2876 | N_TEXT, because we have no way of knowing | |
2877 | whether the sys-supplied ld or GNU ld was used | |
2878 | to make the executable. Sequents throw in | |
2879 | another wrinkle -- they renumbered N_FN. */ | |
d3119d1e EZ |
2880 | |
2881 | case N_FN: | |
2882 | case N_FN_SEQ: | |
2883 | case N_TEXT: | |
2884 | continue; | |
2885 | ||
2886 | case N_DATA: | |
3e43a32a MS |
2887 | sh.value += ANOFFSET (objfile->section_offsets, |
2888 | SECT_OFF_DATA (objfile)); | |
d3119d1e EZ |
2889 | goto record_it; |
2890 | ||
2891 | case N_UNDF | N_EXT: | |
025bb325 | 2892 | continue; /* Just undefined, not COMMON. */ |
d3119d1e EZ |
2893 | |
2894 | case N_UNDF: | |
2895 | continue; | |
2896 | ||
2897 | /* Lots of symbol types we can just ignore. */ | |
2898 | ||
2899 | case N_ABS: | |
2900 | case N_NBDATA: | |
2901 | case N_NBBSS: | |
2902 | continue; | |
2903 | ||
025bb325 | 2904 | /* Keep going . . . */ |
d3119d1e EZ |
2905 | |
2906 | /* | |
2907 | * Special symbol types for GNU | |
2908 | */ | |
2909 | case N_INDR: | |
2910 | case N_INDR | N_EXT: | |
2911 | case N_SETA: | |
2912 | case N_SETA | N_EXT: | |
2913 | case N_SETT: | |
2914 | case N_SETT | N_EXT: | |
2915 | case N_SETD: | |
2916 | case N_SETD | N_EXT: | |
2917 | case N_SETB: | |
2918 | case N_SETB | N_EXT: | |
2919 | case N_SETV: | |
2920 | continue; | |
2921 | ||
2922 | /* | |
2923 | * Debugger symbols | |
2924 | */ | |
2925 | ||
2926 | case N_SO: | |
2927 | { | |
2928 | CORE_ADDR valu; | |
2929 | static int prev_so_symnum = -10; | |
2930 | static int first_so_symnum; | |
0ba1096a | 2931 | const char *p; |
d3119d1e EZ |
2932 | int prev_textlow_not_set; |
2933 | ||
3e43a32a MS |
2934 | valu = sh.value + ANOFFSET (objfile->section_offsets, |
2935 | SECT_OFF_TEXT (objfile)); | |
d3119d1e EZ |
2936 | |
2937 | prev_textlow_not_set = textlow_not_set; | |
2938 | ||
3e43a32a | 2939 | /* A zero value is probably an indication for the |
025bb325 | 2940 | SunPRO 3.0 compiler. end_psymtab explicitly tests |
3e43a32a | 2941 | for zero, so don't relocate it. */ |
d3119d1e | 2942 | |
203c3895 | 2943 | if (sh.value == 0 |
5e2b427d | 2944 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
d3119d1e EZ |
2945 | { |
2946 | textlow_not_set = 1; | |
2947 | valu = 0; | |
2948 | } | |
2949 | else | |
2950 | textlow_not_set = 0; | |
203c3895 | 2951 | |
d3119d1e EZ |
2952 | past_first_source_file = 1; |
2953 | ||
2954 | if (prev_so_symnum != symnum - 1) | |
025bb325 | 2955 | { /* Here if prev stab wasn't N_SO. */ |
d3119d1e EZ |
2956 | first_so_symnum = symnum; |
2957 | ||
2958 | if (pst) | |
2959 | { | |
2960 | pst = (struct partial_symtab *) 0; | |
2961 | includes_used = 0; | |
2962 | dependencies_used = 0; | |
2963 | } | |
2964 | } | |
2965 | ||
2966 | prev_so_symnum = symnum; | |
c906108c | 2967 | |
025bb325 MS |
2968 | /* End the current partial symtab and start a |
2969 | new one. */ | |
d3119d1e EZ |
2970 | |
2971 | /* SET_NAMESTRING ();*/ | |
2972 | namestring = stabstring; | |
2973 | ||
3e43a32a | 2974 | /* Null name means end of .o file. Don't start a new |
025bb325 | 2975 | one. */ |
d3119d1e EZ |
2976 | if (*namestring == '\000') |
2977 | continue; | |
2978 | ||
3e43a32a MS |
2979 | /* Some compilers (including gcc) emit a pair of |
2980 | initial N_SOs. The first one is a directory name; | |
2981 | the second the file name. If pst exists, is | |
2982 | empty, and has a filename ending in '/', we assume | |
025bb325 | 2983 | the previous N_SO was a directory name. */ |
0ba1096a KT |
2984 | p = lbasename (namestring); |
2985 | if (p != namestring && *p == '\000') | |
3e43a32a | 2986 | continue; /* Simply ignore directory |
025bb325 | 2987 | name SOs. */ |
d3119d1e | 2988 | |
3e43a32a MS |
2989 | /* Some other compilers (C++ ones in particular) emit |
2990 | useless SOs for non-existant .c files. We ignore | |
2991 | all subsequent SOs that immediately follow the | |
2992 | first. */ | |
d3119d1e EZ |
2993 | |
2994 | if (!pst) | |
2995 | pst = save_pst; | |
2996 | continue; | |
2997 | } | |
2998 | ||
2999 | case N_BINCL: | |
3000 | continue; | |
3001 | ||
3002 | case N_SOL: | |
3003 | { | |
3004 | enum language tmp_language; | |
b8d56208 | 3005 | |
025bb325 | 3006 | /* Mark down an include file in the current psymtab. */ |
d3119d1e | 3007 | |
025bb325 | 3008 | /* SET_NAMESTRING (); */ |
d3119d1e EZ |
3009 | namestring = stabstring; |
3010 | ||
3e43a32a MS |
3011 | tmp_language |
3012 | = deduce_language_from_filename (namestring); | |
d3119d1e | 3013 | |
3e43a32a MS |
3014 | /* Only change the psymtab's language if we've |
3015 | learned something useful (eg. tmp_language is not | |
3016 | language_unknown). In addition, to match what | |
3017 | start_subfile does, never change from C++ to | |
3018 | C. */ | |
d3119d1e EZ |
3019 | if (tmp_language != language_unknown |
3020 | && (tmp_language != language_c | |
3021 | || psymtab_language != language_cplus)) | |
3022 | psymtab_language = tmp_language; | |
3023 | ||
3e43a32a MS |
3024 | /* In C++, one may expect the same filename to come |
3025 | round many times, when code is coming alternately | |
3026 | from the main file and from inline functions in | |
025bb325 | 3027 | other files. So I check to see if this is a file |
3e43a32a MS |
3028 | we've seen before -- either the main source file, |
3029 | or a previously included file. | |
3030 | ||
3031 | This seems to be a lot of time to be spending on | |
3032 | N_SOL, but things like "break c-exp.y:435" need to | |
3033 | work (I suppose the psymtab_include_list could be | |
3034 | hashed or put in a binary tree, if profiling shows | |
3035 | this is a major hog). */ | |
0ba1096a | 3036 | if (pst && filename_cmp (namestring, pst->filename) == 0) |
d3119d1e | 3037 | continue; |
b8d56208 | 3038 | |
d3119d1e | 3039 | { |
aa1ee363 | 3040 | int i; |
b8d56208 | 3041 | |
d3119d1e | 3042 | for (i = 0; i < includes_used; i++) |
0ba1096a KT |
3043 | if (filename_cmp (namestring, |
3044 | psymtab_include_list[i]) == 0) | |
d3119d1e EZ |
3045 | { |
3046 | i = -1; | |
3047 | break; | |
3048 | } | |
3049 | if (i == -1) | |
3050 | continue; | |
3051 | } | |
3052 | ||
3053 | psymtab_include_list[includes_used++] = namestring; | |
3054 | if (includes_used >= includes_allocated) | |
3055 | { | |
0d5cff50 | 3056 | const char **orig = psymtab_include_list; |
d3119d1e | 3057 | |
0d5cff50 | 3058 | psymtab_include_list = (const char **) |
d3119d1e | 3059 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 3060 | sizeof (const char *)); |
4efb68b1 | 3061 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 3062 | includes_used * sizeof (const char *)); |
d3119d1e EZ |
3063 | } |
3064 | continue; | |
3065 | } | |
025bb325 | 3066 | case N_LSYM: /* Typedef or automatic variable. */ |
3e43a32a MS |
3067 | case N_STSYM: /* Data seg var -- static */ |
3068 | case N_LCSYM: /* BSS " */ | |
3069 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
3070 | case N_NBSTS: /* Gould nobase. */ | |
3071 | case N_NBLCS: /* symbols. */ | |
d3119d1e | 3072 | case N_FUN: |
3e43a32a MS |
3073 | case N_GSYM: /* Global (extern) variable; can be |
3074 | data or bss (sigh FIXME). */ | |
d3119d1e EZ |
3075 | |
3076 | /* Following may probably be ignored; I'll leave them here | |
3077 | for now (until I do Pascal and Modula 2 extensions). */ | |
3078 | ||
3e43a32a MS |
3079 | case N_PC: /* I may or may not need this; I |
3080 | suspect not. */ | |
3081 | case N_M2C: /* I suspect that I can ignore this | |
025bb325 MS |
3082 | here. */ |
3083 | case N_SCOPE: /* Same. */ | |
d3119d1e | 3084 | |
025bb325 | 3085 | /* SET_NAMESTRING (); */ |
d3119d1e EZ |
3086 | namestring = stabstring; |
3087 | p = (char *) strchr (namestring, ':'); | |
3088 | if (!p) | |
025bb325 | 3089 | continue; /* Not a debugging symbol. */ |
d3119d1e EZ |
3090 | |
3091 | ||
3092 | ||
3093 | /* Main processing section for debugging symbols which | |
3e43a32a MS |
3094 | the initial read through the symbol tables needs to |
3095 | worry about. If we reach this point, the symbol | |
3096 | which we are considering is definitely one we are | |
3097 | interested in. p must also contain the (valid) | |
3098 | index into the namestring which indicates the | |
3099 | debugging type symbol. */ | |
d3119d1e EZ |
3100 | |
3101 | switch (p[1]) | |
3102 | { | |
3103 | case 'S': | |
3e43a32a MS |
3104 | sh.value += ANOFFSET (objfile->section_offsets, |
3105 | SECT_OFF_DATA (objfile)); | |
149ad273 | 3106 | |
5e2b427d | 3107 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 3108 | namestring = gdbarch_static_transform_name |
5e2b427d | 3109 | (gdbarch, namestring); |
149ad273 | 3110 | |
04a679b8 | 3111 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3112 | VAR_DOMAIN, LOC_STATIC, |
d3119d1e EZ |
3113 | &objfile->static_psymbols, |
3114 | 0, sh.value, | |
3115 | psymtab_language, objfile); | |
3116 | continue; | |
3117 | case 'G': | |
3e43a32a MS |
3118 | sh.value += ANOFFSET (objfile->section_offsets, |
3119 | SECT_OFF_DATA (objfile)); | |
025bb325 MS |
3120 | /* The addresses in these entries are reported |
3121 | to be wrong. See the code that reads 'G's | |
3122 | for symtabs. */ | |
04a679b8 | 3123 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3124 | VAR_DOMAIN, LOC_STATIC, |
d3119d1e EZ |
3125 | &objfile->global_psymbols, |
3126 | 0, sh.value, | |
3127 | psymtab_language, objfile); | |
3128 | continue; | |
3129 | ||
3130 | case 'T': | |
3131 | /* When a 'T' entry is defining an anonymous enum, it | |
3132 | may have a name which is the empty string, or a | |
3133 | single space. Since they're not really defining a | |
3134 | symbol, those shouldn't go in the partial symbol | |
3135 | table. We do pick up the elements of such enums at | |
3136 | 'check_enum:', below. */ | |
3137 | if (p >= namestring + 2 | |
3138 | || (p == namestring + 1 | |
3139 | && namestring[0] != ' ')) | |
3140 | { | |
04a679b8 | 3141 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3142 | STRUCT_DOMAIN, LOC_TYPEDEF, |
d3119d1e EZ |
3143 | &objfile->static_psymbols, |
3144 | sh.value, 0, | |
3145 | psymtab_language, objfile); | |
3146 | if (p[2] == 't') | |
3147 | { | |
3148 | /* Also a typedef with the same name. */ | |
3e43a32a MS |
3149 | add_psymbol_to_list (namestring, |
3150 | p - namestring, 1, | |
176620f1 | 3151 | VAR_DOMAIN, LOC_TYPEDEF, |
d3119d1e EZ |
3152 | &objfile->static_psymbols, |
3153 | sh.value, 0, | |
3e43a32a MS |
3154 | psymtab_language, |
3155 | objfile); | |
d3119d1e EZ |
3156 | p += 1; |
3157 | } | |
d3119d1e EZ |
3158 | } |
3159 | goto check_enum; | |
3160 | case 't': | |
3e43a32a | 3161 | if (p != namestring) /* a name is there, not |
025bb325 | 3162 | just :T... */ |
d3119d1e | 3163 | { |
04a679b8 | 3164 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3165 | VAR_DOMAIN, LOC_TYPEDEF, |
d3119d1e EZ |
3166 | &objfile->static_psymbols, |
3167 | sh.value, 0, | |
3168 | psymtab_language, objfile); | |
3169 | } | |
3170 | check_enum: | |
3e43a32a MS |
3171 | /* If this is an enumerated type, we need to add |
3172 | all the enum constants to the partial symbol | |
3173 | table. This does not cover enums without names, | |
025bb325 | 3174 | e.g. "enum {a, b} c;" in C, but fortunately |
3e43a32a MS |
3175 | those are rare. There is no way for GDB to find |
3176 | those from the enum type without spending too | |
3177 | much time on it. Thus to solve this problem, | |
3178 | the compiler needs to put out the enum in a | |
3179 | nameless type. GCC2 does this. */ | |
d3119d1e EZ |
3180 | |
3181 | /* We are looking for something of the form | |
3182 | <name> ":" ("t" | "T") [<number> "="] "e" | |
3183 | {<constant> ":" <value> ","} ";". */ | |
3184 | ||
3185 | /* Skip over the colon and the 't' or 'T'. */ | |
3186 | p += 2; | |
3e43a32a MS |
3187 | /* This type may be given a number. Also, numbers |
3188 | can come in pairs like (0,26). Skip over it. */ | |
d3119d1e EZ |
3189 | while ((*p >= '0' && *p <= '9') |
3190 | || *p == '(' || *p == ',' || *p == ')' | |
3191 | || *p == '=') | |
3192 | p++; | |
3193 | ||
3194 | if (*p++ == 'e') | |
3195 | { | |
3e43a32a MS |
3196 | /* The aix4 compiler emits extra crud before |
3197 | the members. */ | |
d3119d1e EZ |
3198 | if (*p == '-') |
3199 | { | |
3200 | /* Skip over the type (?). */ | |
3201 | while (*p != ':') | |
3202 | p++; | |
3203 | ||
3204 | /* Skip over the colon. */ | |
3205 | p++; | |
3206 | } | |
3207 | ||
3208 | /* We have found an enumerated type. */ | |
3209 | /* According to comments in read_enum_type | |
3210 | a comma could end it instead of a semicolon. | |
3211 | I don't know where that happens. | |
3212 | Accept either. */ | |
3213 | while (*p && *p != ';' && *p != ',') | |
3214 | { | |
3215 | char *q; | |
3216 | ||
3e43a32a MS |
3217 | /* Check for and handle cretinous dbx |
3218 | symbol name continuation! */ | |
d3119d1e EZ |
3219 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) |
3220 | p = next_symbol_text (objfile); | |
3221 | ||
3222 | /* Point to the character after the name | |
3223 | of the enum constant. */ | |
3224 | for (q = p; *q && *q != ':'; q++) | |
3225 | ; | |
3226 | /* Note that the value doesn't matter for | |
3e43a32a MS |
3227 | enum constants in psymtabs, just in |
3228 | symtabs. */ | |
04a679b8 | 3229 | add_psymbol_to_list (p, q - p, 1, |
176620f1 | 3230 | VAR_DOMAIN, LOC_CONST, |
3e43a32a MS |
3231 | &objfile->static_psymbols, |
3232 | 0, 0, psymtab_language, | |
3233 | objfile); | |
d3119d1e EZ |
3234 | /* Point past the name. */ |
3235 | p = q; | |
3236 | /* Skip over the value. */ | |
3237 | while (*p && *p != ',') | |
3238 | p++; | |
3239 | /* Advance past the comma. */ | |
3240 | if (*p) | |
3241 | p++; | |
3242 | } | |
3243 | } | |
3244 | continue; | |
3245 | case 'c': | |
3246 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 3247 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3248 | VAR_DOMAIN, LOC_CONST, |
3e43a32a MS |
3249 | &objfile->static_psymbols, |
3250 | sh.value, 0, psymtab_language, | |
3251 | objfile); | |
d3119d1e EZ |
3252 | continue; |
3253 | ||
3254 | case 'f': | |
3255 | if (! pst) | |
3256 | { | |
3257 | int name_len = p - namestring; | |
3258 | char *name = xmalloc (name_len + 1); | |
b8d56208 | 3259 | |
d3119d1e EZ |
3260 | memcpy (name, namestring, name_len); |
3261 | name[name_len] = '\0'; | |
23136709 | 3262 | function_outside_compilation_unit_complaint (name); |
d3119d1e EZ |
3263 | xfree (name); |
3264 | } | |
3e43a32a MS |
3265 | sh.value += ANOFFSET (objfile->section_offsets, |
3266 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 3267 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3268 | VAR_DOMAIN, LOC_BLOCK, |
d3119d1e EZ |
3269 | &objfile->static_psymbols, |
3270 | 0, sh.value, | |
3271 | psymtab_language, objfile); | |
3272 | continue; | |
3273 | ||
3274 | /* Global functions were ignored here, but now they | |
3e43a32a MS |
3275 | are put into the global psymtab like one would |
3276 | expect. They're also in the minimal symbol | |
3277 | table. */ | |
d3119d1e EZ |
3278 | case 'F': |
3279 | if (! pst) | |
3280 | { | |
3281 | int name_len = p - namestring; | |
3282 | char *name = xmalloc (name_len + 1); | |
b8d56208 | 3283 | |
d3119d1e EZ |
3284 | memcpy (name, namestring, name_len); |
3285 | name[name_len] = '\0'; | |
23136709 | 3286 | function_outside_compilation_unit_complaint (name); |
d3119d1e EZ |
3287 | xfree (name); |
3288 | } | |
3e43a32a MS |
3289 | sh.value += ANOFFSET (objfile->section_offsets, |
3290 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 3291 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3292 | VAR_DOMAIN, LOC_BLOCK, |
d3119d1e EZ |
3293 | &objfile->global_psymbols, |
3294 | 0, sh.value, | |
3295 | psymtab_language, objfile); | |
3296 | continue; | |
3297 | ||
3e43a32a MS |
3298 | /* Two things show up here (hopefully); static |
3299 | symbols of local scope (static used inside | |
3300 | braces) or extensions of structure symbols. We | |
3301 | can ignore both. */ | |
d3119d1e EZ |
3302 | case 'V': |
3303 | case '(': | |
3304 | case '0': | |
3305 | case '1': | |
3306 | case '2': | |
3307 | case '3': | |
3308 | case '4': | |
3309 | case '5': | |
3310 | case '6': | |
3311 | case '7': | |
3312 | case '8': | |
3313 | case '9': | |
3314 | case '-': | |
3e43a32a MS |
3315 | case '#': /* For symbol identification (used |
3316 | in live ranges). */ | |
d3119d1e EZ |
3317 | continue; |
3318 | ||
3319 | case ':': | |
3e43a32a MS |
3320 | /* It is a C++ nested symbol. We don't need to |
3321 | record it (I don't think); if we try to look up | |
3322 | foo::bar::baz, then symbols for the symtab | |
3323 | containing foo should get read in, I think. */ | |
d3119d1e EZ |
3324 | /* Someone says sun cc puts out symbols like |
3325 | /foo/baz/maclib::/usr/local/bin/maclib, | |
3326 | which would get here with a symbol type of ':'. */ | |
3327 | continue; | |
3328 | ||
3329 | default: | |
3e43a32a MS |
3330 | /* Unexpected symbol descriptor. The second and |
3331 | subsequent stabs of a continued stab can show up | |
3332 | here. The question is whether they ever can | |
3333 | mimic a normal stab--it would be nice if not, | |
3334 | since we certainly don't want to spend the time | |
3335 | searching to the end of every string looking for | |
d3119d1e EZ |
3336 | a backslash. */ |
3337 | ||
23136709 | 3338 | complaint (&symfile_complaints, |
e2e0b3e5 | 3339 | _("unknown symbol descriptor `%c'"), p[1]); |
d3119d1e EZ |
3340 | |
3341 | /* Ignore it; perhaps it is an extension that we don't | |
3342 | know about. */ | |
3343 | continue; | |
3344 | } | |
3345 | ||
3346 | case N_EXCL: | |
3347 | continue; | |
3348 | ||
3349 | case N_ENDM: | |
5afc051b JB |
3350 | /* Solaris 2 end of module, finish current partial |
3351 | symbol table. END_PSYMTAB will set | |
3352 | pst->texthigh to the proper value, which is | |
3353 | necessary if a module compiled without | |
3354 | debugging info follows this module. */ | |
203c3895 | 3355 | if (pst |
5e2b427d | 3356 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
d3119d1e EZ |
3357 | { |
3358 | pst = (struct partial_symtab *) 0; | |
3359 | includes_used = 0; | |
3360 | dependencies_used = 0; | |
3361 | } | |
d3119d1e EZ |
3362 | continue; |
3363 | ||
3364 | case N_RBRAC: | |
5afc051b JB |
3365 | if (sh.value > save_pst->texthigh) |
3366 | save_pst->texthigh = sh.value; | |
d3119d1e EZ |
3367 | continue; |
3368 | case N_EINCL: | |
3369 | case N_DSLINE: | |
3370 | case N_BSLINE: | |
3e43a32a MS |
3371 | case N_SSYM: /* Claim: Structure or union |
3372 | element. Hopefully, I can | |
3373 | ignore this. */ | |
3374 | case N_ENTRY: /* Alternate entry point; can | |
025bb325 | 3375 | ignore. */ |
3e43a32a | 3376 | case N_MAIN: /* Can definitely ignore this. */ |
025bb325 MS |
3377 | case N_CATCH: /* These are GNU C++ extensions. */ |
3378 | case N_EHDECL: /* that can safely be ignored here. */ | |
d3119d1e EZ |
3379 | case N_LENG: |
3380 | case N_BCOMM: | |
3381 | case N_ECOMM: | |
3382 | case N_ECOML: | |
3383 | case N_FNAME: | |
3384 | case N_SLINE: | |
3385 | case N_RSYM: | |
3386 | case N_PSYM: | |
3387 | case N_LBRAC: | |
3388 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
3389 | case N_DEFD: /* GNU Modula-2 */ | |
3e43a32a MS |
3390 | case N_ALIAS: /* SunPro F77: alias name, ignore |
3391 | for now. */ | |
d3119d1e | 3392 | |
025bb325 | 3393 | case N_OBJ: /* Useless types from Solaris. */ |
d3119d1e | 3394 | case N_OPT: |
3e43a32a | 3395 | /* These symbols aren't interesting; don't worry about |
025bb325 | 3396 | them. */ |
d3119d1e EZ |
3397 | |
3398 | continue; | |
3399 | ||
3400 | default: | |
3e43a32a MS |
3401 | /* If we haven't found it yet, ignore it. It's |
3402 | probably some new type we don't know about yet. */ | |
3403 | complaint (&symfile_complaints, | |
3404 | _("unknown symbol type %s"), | |
025bb325 | 3405 | hex_string (type_code)); /* CUR_SYMBOL_TYPE */ |
d3119d1e EZ |
3406 | continue; |
3407 | } | |
c5aa993b | 3408 | if (stabstring |
c906108c | 3409 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
b8c9b27d | 3410 | xfree (stabstring); |
c906108c | 3411 | } |
c5aa993b | 3412 | /* end - Handle continuation */ |
c906108c SS |
3413 | } |
3414 | } | |
3415 | else | |
3416 | { | |
3417 | for (cur_sdx = 0; cur_sdx < fh->csym;) | |
3418 | { | |
3419 | char *name; | |
3420 | enum address_class class; | |
2273f0ac | 3421 | CORE_ADDR minsym_value; |
c906108c SS |
3422 | |
3423 | (*swap_sym_in) (cur_bfd, | |
3424 | ((char *) debug_info->external_sym | |
3425 | + ((fh->isymBase + cur_sdx) | |
3426 | * external_sym_size)), | |
3427 | &sh); | |
3428 | ||
3429 | if (ECOFF_IS_STAB (&sh)) | |
3430 | { | |
3431 | cur_sdx++; | |
3432 | continue; | |
3433 | } | |
3434 | ||
3435 | /* Non absolute static symbols go into the minimal table. */ | |
c5aa993b | 3436 | if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil |
c906108c SS |
3437 | || (sh.index == indexNil |
3438 | && (sh.st != stStatic || sh.sc == scAbs))) | |
3439 | { | |
025bb325 | 3440 | /* FIXME, premature? */ |
c906108c SS |
3441 | cur_sdx++; |
3442 | continue; | |
3443 | } | |
3444 | ||
3445 | name = debug_info->ss + fh->issBase + sh.iss; | |
3446 | ||
2273f0ac TT |
3447 | minsym_value = sh.value; |
3448 | ||
c906108c SS |
3449 | switch (sh.sc) |
3450 | { | |
3451 | case scText: | |
3452 | case scRConst: | |
3453 | /* The value of a stEnd symbol is the displacement from the | |
3454 | corresponding start symbol value, do not relocate it. */ | |
3455 | if (sh.st != stEnd) | |
3e43a32a MS |
3456 | sh.value += ANOFFSET (objfile->section_offsets, |
3457 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3458 | break; |
3459 | case scData: | |
3460 | case scSData: | |
3461 | case scRData: | |
3462 | case scPData: | |
3463 | case scXData: | |
3e43a32a MS |
3464 | sh.value += ANOFFSET (objfile->section_offsets, |
3465 | SECT_OFF_DATA (objfile)); | |
c906108c SS |
3466 | break; |
3467 | case scBss: | |
3468 | case scSBss: | |
3e43a32a MS |
3469 | sh.value += ANOFFSET (objfile->section_offsets, |
3470 | SECT_OFF_BSS (objfile)); | |
c906108c SS |
3471 | break; |
3472 | } | |
3473 | ||
3474 | switch (sh.st) | |
3475 | { | |
3476 | CORE_ADDR high; | |
3477 | CORE_ADDR procaddr; | |
3478 | int new_sdx; | |
3479 | ||
3480 | case stStaticProc: | |
2273f0ac | 3481 | prim_record_minimal_symbol_and_info (name, minsym_value, |
b887350f | 3482 | mst_file_text, |
3e43a32a | 3483 | SECT_OFF_TEXT (objfile), |
e6dc44a8 | 3484 | objfile); |
c906108c SS |
3485 | |
3486 | /* FALLTHROUGH */ | |
3487 | ||
3488 | case stProc: | |
1fb4c65b JB |
3489 | /* Ignore all parameter symbol records. */ |
3490 | if (sh.index >= hdr->iauxMax) | |
3491 | { | |
3492 | /* Should not happen, but does when cross-compiling | |
3493 | with the MIPS compiler. FIXME -- pull later. */ | |
3494 | index_complaint (name); | |
025bb325 | 3495 | new_sdx = cur_sdx + 1; /* Don't skip at all. */ |
1fb4c65b JB |
3496 | } |
3497 | else | |
3498 | new_sdx = AUX_GET_ISYM (fh->fBigendian, | |
3499 | (debug_info->external_aux | |
3500 | + fh->iauxBase | |
3501 | + sh.index)); | |
3502 | ||
3503 | if (new_sdx <= cur_sdx) | |
3504 | { | |
3505 | /* This should not happen either... FIXME. */ | |
3506 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3507 | _("bad proc end in aux found from symbol %s"), |
1fb4c65b | 3508 | name); |
025bb325 | 3509 | new_sdx = cur_sdx + 1; /* Don't skip backward. */ |
1fb4c65b JB |
3510 | } |
3511 | ||
3512 | /* For stProc symbol records, we need to check the | |
3513 | storage class as well, as only (stProc, scText) | |
3514 | entries represent "real" procedures - See the | |
3515 | Compaq document titled "Object File / Symbol Table | |
3516 | Format Specification" for more information. If the | |
3517 | storage class is not scText, we discard the whole | |
3518 | block of symbol records for this stProc. */ | |
3519 | if (sh.st == stProc && sh.sc != scText) | |
3520 | goto skip; | |
3521 | ||
c906108c | 3522 | /* Usually there is a local and a global stProc symbol |
025bb325 | 3523 | for a function. This means that the function name |
c906108c SS |
3524 | has already been entered into the mimimal symbol table |
3525 | while processing the global symbols in pass 2 above. | |
3526 | One notable exception is the PROGRAM name from | |
3527 | f77 compiled executables, it is only put out as | |
3528 | local stProc symbol, and a global MAIN__ stProc symbol | |
3529 | points to it. It doesn't matter though, as gdb is | |
3530 | still able to find the PROGRAM name via the partial | |
3531 | symbol table, and the MAIN__ symbol via the minimal | |
3532 | symbol table. */ | |
3533 | if (sh.st == stProc) | |
04a679b8 | 3534 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3535 | VAR_DOMAIN, LOC_BLOCK, |
c906108c | 3536 | &objfile->global_psymbols, |
c5aa993b | 3537 | 0, sh.value, psymtab_language, objfile); |
c906108c | 3538 | else |
04a679b8 | 3539 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3540 | VAR_DOMAIN, LOC_BLOCK, |
c906108c | 3541 | &objfile->static_psymbols, |
c5aa993b | 3542 | 0, sh.value, psymtab_language, objfile); |
c906108c | 3543 | |
c906108c SS |
3544 | procaddr = sh.value; |
3545 | ||
c906108c SS |
3546 | cur_sdx = new_sdx; |
3547 | (*swap_sym_in) (cur_bfd, | |
3548 | ((char *) debug_info->external_sym | |
3549 | + ((fh->isymBase + cur_sdx - 1) | |
3550 | * external_sym_size)), | |
3551 | &sh); | |
3552 | if (sh.st != stEnd) | |
3553 | continue; | |
3554 | ||
3555 | /* Kludge for Irix 5.2 zero fh->adr. */ | |
3556 | if (!relocatable | |
5afc051b JB |
3557 | && (pst->textlow == 0 || procaddr < pst->textlow)) |
3558 | pst->textlow = procaddr; | |
c906108c SS |
3559 | |
3560 | high = procaddr + sh.value; | |
5afc051b JB |
3561 | if (high > pst->texthigh) |
3562 | pst->texthigh = high; | |
c906108c SS |
3563 | continue; |
3564 | ||
3565 | case stStatic: /* Variable */ | |
c5aa993b | 3566 | if (SC_IS_DATA (sh.sc)) |
2273f0ac | 3567 | prim_record_minimal_symbol_and_info (name, minsym_value, |
b887350f | 3568 | mst_file_data, |
b8fbeb18 | 3569 | SECT_OFF_DATA (objfile), |
c906108c SS |
3570 | objfile); |
3571 | else | |
2273f0ac | 3572 | prim_record_minimal_symbol_and_info (name, minsym_value, |
b887350f | 3573 | mst_file_bss, |
b8fbeb18 | 3574 | SECT_OFF_BSS (objfile), |
c906108c SS |
3575 | objfile); |
3576 | class = LOC_STATIC; | |
3577 | break; | |
3578 | ||
c5aa993b | 3579 | case stIndirect: /* Irix5 forward declaration */ |
025bb325 | 3580 | /* Skip forward declarations from Irix5 cc. */ |
c906108c SS |
3581 | goto skip; |
3582 | ||
c5aa993b | 3583 | case stTypedef: /* Typedef */ |
c906108c SS |
3584 | /* Skip typedefs for forward declarations and opaque |
3585 | structs from alpha and mips cc. */ | |
3586 | if (sh.iss == 0 || has_opaque_xref (fh, &sh)) | |
3587 | goto skip; | |
3588 | class = LOC_TYPEDEF; | |
3589 | break; | |
3590 | ||
3591 | case stConstant: /* Constant decl */ | |
3592 | class = LOC_CONST; | |
3593 | break; | |
3594 | ||
3595 | case stUnion: | |
3596 | case stStruct: | |
3597 | case stEnum: | |
c5aa993b | 3598 | case stBlock: /* { }, str, un, enum */ |
c906108c | 3599 | /* Do not create a partial symbol for cc unnamed aggregates |
025bb325 | 3600 | and gcc empty aggregates. */ |
c906108c | 3601 | if ((sh.sc == scInfo |
c5aa993b | 3602 | || SC_IS_COMMON (sh.sc)) |
c906108c SS |
3603 | && sh.iss != 0 |
3604 | && sh.index != cur_sdx + 2) | |
3605 | { | |
04a679b8 | 3606 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3607 | STRUCT_DOMAIN, LOC_TYPEDEF, |
c906108c SS |
3608 | &objfile->static_psymbols, |
3609 | 0, (CORE_ADDR) 0, | |
3610 | psymtab_language, objfile); | |
3611 | } | |
3612 | handle_psymbol_enumerators (objfile, fh, sh.st, sh.value); | |
3613 | ||
025bb325 | 3614 | /* Skip over the block. */ |
c906108c SS |
3615 | new_sdx = sh.index; |
3616 | if (new_sdx <= cur_sdx) | |
3617 | { | |
025bb325 | 3618 | /* This happens with the Ultrix kernel. */ |
23136709 | 3619 | complaint (&symfile_complaints, |
e2e0b3e5 | 3620 | _("bad aux index at block symbol %s"), name); |
025bb325 | 3621 | new_sdx = cur_sdx + 1; /* Don't skip backward. */ |
c906108c SS |
3622 | } |
3623 | cur_sdx = new_sdx; | |
3624 | continue; | |
3625 | ||
3626 | case stFile: /* File headers */ | |
3627 | case stLabel: /* Labels */ | |
3628 | case stEnd: /* Ends of files */ | |
3629 | goto skip; | |
3630 | ||
3631 | case stLocal: /* Local variables */ | |
3632 | /* Normally these are skipped because we skip over | |
3633 | all blocks we see. However, these can occur | |
025bb325 | 3634 | as visible symbols in a .h file that contains code. */ |
c906108c SS |
3635 | goto skip; |
3636 | ||
3637 | default: | |
3638 | /* Both complaints are valid: one gives symbol name, | |
3639 | the other the offending symbol type. */ | |
e2e0b3e5 | 3640 | complaint (&symfile_complaints, _("unknown local symbol %s"), |
23136709 | 3641 | name); |
e2e0b3e5 | 3642 | complaint (&symfile_complaints, _("with type %d"), sh.st); |
c906108c SS |
3643 | cur_sdx++; |
3644 | continue; | |
3645 | } | |
025bb325 | 3646 | /* Use this gdb symbol. */ |
04a679b8 | 3647 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3648 | VAR_DOMAIN, class, |
c906108c SS |
3649 | &objfile->static_psymbols, |
3650 | 0, sh.value, psymtab_language, objfile); | |
3651 | skip: | |
025bb325 | 3652 | cur_sdx++; /* Go to next file symbol. */ |
c906108c SS |
3653 | } |
3654 | ||
025bb325 | 3655 | /* Now do enter the external symbols. */ |
c906108c SS |
3656 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; |
3657 | cur_sdx = fdr_to_pst[f_idx].n_globals; | |
3658 | PST_PRIVATE (save_pst)->extern_count = cur_sdx; | |
3659 | PST_PRIVATE (save_pst)->extern_tab = ext_ptr; | |
3660 | for (; --cur_sdx >= 0; ext_ptr++) | |
3661 | { | |
3662 | enum address_class class; | |
3663 | SYMR *psh; | |
3664 | char *name; | |
3665 | CORE_ADDR svalue; | |
3666 | ||
3667 | if (ext_ptr->ifd != f_idx) | |
3e43a32a MS |
3668 | internal_error (__FILE__, __LINE__, |
3669 | _("failed internal consistency check")); | |
c906108c SS |
3670 | psh = &ext_ptr->asym; |
3671 | ||
3672 | /* Do not add undefined symbols to the partial symbol table. */ | |
c5aa993b | 3673 | if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil) |
c906108c SS |
3674 | continue; |
3675 | ||
3676 | svalue = psh->value; | |
3677 | switch (psh->sc) | |
3678 | { | |
3679 | case scText: | |
3680 | case scRConst: | |
3e43a32a MS |
3681 | svalue += ANOFFSET (objfile->section_offsets, |
3682 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3683 | break; |
3684 | case scData: | |
3685 | case scSData: | |
3686 | case scRData: | |
3687 | case scPData: | |
3688 | case scXData: | |
3e43a32a MS |
3689 | svalue += ANOFFSET (objfile->section_offsets, |
3690 | SECT_OFF_DATA (objfile)); | |
c906108c SS |
3691 | break; |
3692 | case scBss: | |
3693 | case scSBss: | |
3e43a32a MS |
3694 | svalue += ANOFFSET (objfile->section_offsets, |
3695 | SECT_OFF_BSS (objfile)); | |
c906108c SS |
3696 | break; |
3697 | } | |
3698 | ||
3699 | switch (psh->st) | |
3700 | { | |
3701 | case stNil: | |
3702 | /* These are generated for static symbols in .o files, | |
3703 | ignore them. */ | |
3704 | continue; | |
3705 | case stProc: | |
3706 | case stStaticProc: | |
3707 | /* External procedure symbols have been entered | |
3708 | into the minimal symbol table in pass 2 above. | |
3709 | Ignore them, as parse_external will ignore them too. */ | |
3710 | continue; | |
3711 | case stLabel: | |
3712 | class = LOC_LABEL; | |
3713 | break; | |
3714 | default: | |
23136709 | 3715 | unknown_ext_complaint (debug_info->ssext + psh->iss); |
c906108c SS |
3716 | /* Fall through, pretend it's global. */ |
3717 | case stGlobal: | |
3718 | /* Global common symbols are resolved by the runtime loader, | |
3719 | ignore them. */ | |
c5aa993b | 3720 | if (SC_IS_COMMON (psh->sc)) |
c906108c SS |
3721 | continue; |
3722 | ||
3723 | class = LOC_STATIC; | |
3724 | break; | |
3725 | } | |
3726 | name = debug_info->ssext + psh->iss; | |
04a679b8 | 3727 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3728 | VAR_DOMAIN, class, |
c906108c SS |
3729 | &objfile->global_psymbols, |
3730 | 0, svalue, | |
3731 | psymtab_language, objfile); | |
3732 | } | |
3733 | } | |
3734 | ||
025bb325 | 3735 | /* Link pst to FDR. end_psymtab returns NULL if the psymtab was |
c5aa993b | 3736 | empty and put on the free list. */ |
5c80ed9d | 3737 | fdr_to_pst[f_idx].pst = end_psymtab (objfile, save_pst, |
c5aa993b | 3738 | psymtab_include_list, includes_used, |
5afc051b | 3739 | -1, save_pst->texthigh, |
c5aa993b | 3740 | dependency_list, dependencies_used, textlow_not_set); |
c906108c SS |
3741 | includes_used = 0; |
3742 | dependencies_used = 0; | |
3743 | ||
c906108c | 3744 | /* The objfile has its functions reordered if this partial symbol |
c5aa993b JM |
3745 | table overlaps any other partial symbol table. |
3746 | We cannot assume a reordered objfile if a partial symbol table | |
3747 | is contained within another partial symbol table, as partial symbol | |
3748 | tables for include files with executable code are contained | |
3749 | within the partial symbol table for the including source file, | |
3750 | and we do not want to flag the objfile reordered for these cases. | |
3751 | ||
3752 | This strategy works well for Irix-5.2 shared libraries, but we | |
3753 | might have to use a more elaborate (and slower) algorithm for | |
3754 | other cases. */ | |
c906108c SS |
3755 | save_pst = fdr_to_pst[f_idx].pst; |
3756 | if (save_pst != NULL | |
5afc051b | 3757 | && save_pst->textlow != 0 |
c906108c SS |
3758 | && !(objfile->flags & OBJF_REORDERED)) |
3759 | { | |
3760 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
c5aa993b JM |
3761 | { |
3762 | if (save_pst != pst | |
5afc051b JB |
3763 | && save_pst->textlow >= pst->textlow |
3764 | && save_pst->textlow < pst->texthigh | |
3765 | && save_pst->texthigh > pst->texthigh) | |
c5aa993b JM |
3766 | { |
3767 | objfile->flags |= OBJF_REORDERED; | |
3768 | break; | |
3769 | } | |
3770 | } | |
c906108c SS |
3771 | } |
3772 | } | |
3773 | ||
025bb325 | 3774 | /* Now scan the FDRs for dependencies. */ |
c906108c SS |
3775 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) |
3776 | { | |
3777 | fh = f_idx + debug_info->fdr; | |
3778 | pst = fdr_to_pst[f_idx].pst; | |
3779 | ||
c5aa993b | 3780 | if (pst == (struct partial_symtab *) NULL) |
c906108c SS |
3781 | continue; |
3782 | ||
025bb325 | 3783 | /* This should catch stabs-in-ecoff. */ |
c906108c SS |
3784 | if (fh->crfd <= 1) |
3785 | continue; | |
3786 | ||
3e43a32a MS |
3787 | /* Skip the first file indirect entry as it is a self dependency for |
3788 | source files or a reverse .h -> .c dependency for header files. */ | |
c906108c SS |
3789 | pst->number_of_dependencies = 0; |
3790 | pst->dependencies = | |
3791 | ((struct partial_symtab **) | |
8b92e4d5 | 3792 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
3793 | ((fh->crfd - 1) |
3794 | * sizeof (struct partial_symtab *)))); | |
3795 | for (s_idx = 1; s_idx < fh->crfd; s_idx++) | |
3796 | { | |
3797 | RFDT rh; | |
3798 | ||
3799 | (*swap_rfd_in) (cur_bfd, | |
3800 | ((char *) debug_info->external_rfd | |
3801 | + (fh->rfdBase + s_idx) * external_rfd_size), | |
3802 | &rh); | |
3803 | if (rh < 0 || rh >= hdr->ifdMax) | |
3804 | { | |
e2e0b3e5 | 3805 | complaint (&symfile_complaints, _("bad file number %ld"), rh); |
c906108c SS |
3806 | continue; |
3807 | } | |
3808 | ||
3809 | /* Skip self dependencies of header files. */ | |
3810 | if (rh == f_idx) | |
3811 | continue; | |
3812 | ||
3813 | /* Do not add to dependeny list if psymtab was empty. */ | |
c5aa993b | 3814 | if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL) |
c906108c | 3815 | continue; |
3e43a32a MS |
3816 | pst->dependencies[pst->number_of_dependencies++] |
3817 | = fdr_to_pst[rh].pst; | |
c906108c SS |
3818 | } |
3819 | } | |
3820 | ||
3821 | /* Remove the dummy psymtab created for -O3 images above, if it is | |
3822 | still empty, to enable the detection of stripped executables. */ | |
3823 | if (objfile->psymtabs->next == NULL | |
3824 | && objfile->psymtabs->number_of_dependencies == 0 | |
3825 | && objfile->psymtabs->n_global_syms == 0 | |
3826 | && objfile->psymtabs->n_static_syms == 0) | |
3827 | objfile->psymtabs = NULL; | |
3828 | do_cleanups (old_chain); | |
3829 | } | |
3830 | ||
3831 | /* If the current psymbol has an enumerated type, we need to add | |
b021a221 | 3832 | all the enum constants to the partial symbol table. */ |
c906108c SS |
3833 | |
3834 | static void | |
fba45db2 KB |
3835 | handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype, |
3836 | CORE_ADDR svalue) | |
c906108c SS |
3837 | { |
3838 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
12b9c64f | 3839 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c | 3840 | char *ext_sym = ((char *) debug_info->external_sym |
c5aa993b | 3841 | + ((fh->isymBase + cur_sdx + 1) * external_sym_size)); |
c906108c SS |
3842 | SYMR sh; |
3843 | TIR tir; | |
3844 | ||
3845 | switch (stype) | |
3846 | { | |
3847 | case stEnum: | |
3848 | break; | |
3849 | ||
3850 | case stBlock: | |
3851 | /* It is an enumerated type if the next symbol entry is a stMember | |
c5aa993b JM |
3852 | and its auxiliary index is indexNil or its auxiliary entry |
3853 | is a plain btNil or btVoid. | |
3854 | Alpha cc -migrate enums are recognized by a zero index and | |
3855 | a zero symbol value. | |
3856 | DU 4.0 cc enums are recognized by a member type of btEnum without | |
3857 | qualifiers and a zero symbol value. */ | |
c906108c SS |
3858 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); |
3859 | if (sh.st != stMember) | |
3860 | return; | |
3861 | ||
3862 | if (sh.index == indexNil | |
3863 | || (sh.index == 0 && svalue == 0)) | |
3864 | break; | |
3865 | (*debug_swap->swap_tir_in) (fh->fBigendian, | |
3866 | &(debug_info->external_aux | |
3867 | + fh->iauxBase + sh.index)->a_ti, | |
3868 | &tir); | |
3869 | if ((tir.bt != btNil | |
3870 | && tir.bt != btVoid | |
3871 | && (tir.bt != btEnum || svalue != 0)) | |
3872 | || tir.tq0 != tqNil) | |
3873 | return; | |
3874 | break; | |
3875 | ||
3876 | default: | |
3877 | return; | |
3878 | } | |
3879 | ||
3880 | for (;;) | |
3881 | { | |
3882 | char *name; | |
3883 | ||
3884 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); | |
3885 | if (sh.st != stMember) | |
3886 | break; | |
3887 | name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
3888 | ||
3889 | /* Note that the value doesn't matter for enum constants | |
c5aa993b | 3890 | in psymtabs, just in symtabs. */ |
04a679b8 | 3891 | add_psymbol_to_list (name, strlen (name), 1, |
176620f1 | 3892 | VAR_DOMAIN, LOC_CONST, |
c906108c SS |
3893 | &objfile->static_psymbols, 0, |
3894 | (CORE_ADDR) 0, psymtab_language, objfile); | |
3895 | ext_sym += external_sym_size; | |
3896 | } | |
3897 | } | |
3898 | ||
025bb325 | 3899 | /* Get the next symbol. OBJFILE is unused. */ |
0e7e8d51 | 3900 | |
c906108c | 3901 | static char * |
0e7e8d51 | 3902 | mdebug_next_symbol_text (struct objfile *objfile) |
c906108c SS |
3903 | { |
3904 | SYMR sh; | |
3905 | ||
3906 | cur_sdx++; | |
3907 | (*debug_swap->swap_sym_in) (cur_bfd, | |
3908 | ((char *) debug_info->external_sym | |
3909 | + ((cur_fdr->isymBase + cur_sdx) | |
3910 | * debug_swap->external_sym_size)), | |
3911 | &sh); | |
3912 | return debug_info->ss + cur_fdr->issBase + sh.iss; | |
3913 | } | |
3914 | ||
3915 | /* Ancillary function to psymtab_to_symtab(). Does all the work | |
3916 | for turning the partial symtab PST into a symtab, recurring | |
3917 | first on all dependent psymtabs. The argument FILENAME is | |
3918 | only passed so we can see in debug stack traces what file | |
3919 | is being read. | |
3920 | ||
3921 | This function has a split personality, based on whether the | |
3922 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. | |
3923 | The flow of control and even the memory allocation differs. FIXME. */ | |
3924 | ||
3925 | static void | |
5c80ed9d TT |
3926 | psymtab_to_symtab_1 (struct objfile *objfile, |
3927 | struct partial_symtab *pst, const char *filename) | |
c906108c SS |
3928 | { |
3929 | bfd_size_type external_sym_size; | |
3930 | bfd_size_type external_pdr_size; | |
12b9c64f AO |
3931 | void (*swap_sym_in) (bfd *, void *, SYMR *); |
3932 | void (*swap_pdr_in) (bfd *, void *, PDR *); | |
c906108c | 3933 | int i; |
16db6055 | 3934 | struct symtab *st = NULL; |
c906108c SS |
3935 | FDR *fh; |
3936 | struct linetable *lines; | |
3937 | CORE_ADDR lowest_pdr_addr = 0; | |
16db6055 | 3938 | int last_symtab_ended = 0; |
c906108c SS |
3939 | |
3940 | if (pst->readin) | |
3941 | return; | |
3942 | pst->readin = 1; | |
3943 | ||
3944 | /* Read in all partial symbtabs on which this one is dependent. | |
3945 | NOTE that we do have circular dependencies, sigh. We solved | |
3946 | that by setting pst->readin before this point. */ | |
3947 | ||
3948 | for (i = 0; i < pst->number_of_dependencies; i++) | |
3949 | if (!pst->dependencies[i]->readin) | |
3950 | { | |
3951 | /* Inform about additional files to be read in. */ | |
3952 | if (info_verbose) | |
3953 | { | |
3954 | fputs_filtered (" ", gdb_stdout); | |
3955 | wrap_here (""); | |
3956 | fputs_filtered ("and ", gdb_stdout); | |
3957 | wrap_here (""); | |
3958 | printf_filtered ("%s...", | |
3959 | pst->dependencies[i]->filename); | |
3960 | wrap_here (""); /* Flush output */ | |
3961 | gdb_flush (gdb_stdout); | |
3962 | } | |
025bb325 | 3963 | /* We only pass the filename for debug purposes. */ |
5c80ed9d | 3964 | psymtab_to_symtab_1 (objfile, pst->dependencies[i], |
c906108c SS |
3965 | pst->dependencies[i]->filename); |
3966 | } | |
3967 | ||
3968 | /* Do nothing if this is a dummy psymtab. */ | |
3969 | ||
3970 | if (pst->n_global_syms == 0 && pst->n_static_syms == 0 | |
5afc051b | 3971 | && pst->textlow == 0 && pst->texthigh == 0) |
c906108c SS |
3972 | return; |
3973 | ||
025bb325 | 3974 | /* Now read the symbols for this symtab. */ |
c906108c SS |
3975 | |
3976 | cur_bfd = CUR_BFD (pst); | |
3977 | debug_swap = DEBUG_SWAP (pst); | |
3978 | debug_info = DEBUG_INFO (pst); | |
3979 | pending_list = PENDING_LIST (pst); | |
3980 | external_sym_size = debug_swap->external_sym_size; | |
3981 | external_pdr_size = debug_swap->external_pdr_size; | |
3982 | swap_sym_in = debug_swap->swap_sym_in; | |
3983 | swap_pdr_in = debug_swap->swap_pdr_in; | |
5c80ed9d | 3984 | mdebugread_objfile = objfile; |
c906108c SS |
3985 | cur_fd = FDR_IDX (pst); |
3986 | fh = ((cur_fd == -1) | |
3987 | ? (FDR *) NULL | |
3988 | : debug_info->fdr + cur_fd); | |
3989 | cur_fdr = fh; | |
3990 | ||
025bb325 | 3991 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ |
c906108c SS |
3992 | processing_gcc_compilation = 0; |
3993 | if (fh != (FDR *) NULL && fh->csym >= 2) | |
3994 | { | |
3995 | SYMR sh; | |
3996 | ||
3997 | (*swap_sym_in) (cur_bfd, | |
3998 | ((char *) debug_info->external_sym | |
3999 | + (fh->isymBase + 1) * external_sym_size), | |
4000 | &sh); | |
ee300cd4 AC |
4001 | if (strcmp (debug_info->ss + fh->issBase + sh.iss, |
4002 | stabs_symbol) == 0) | |
c906108c SS |
4003 | { |
4004 | /* We indicate that this is a GCC compilation so that certain | |
4005 | features will be enabled in stabsread/dbxread. */ | |
4006 | processing_gcc_compilation = 2; | |
4007 | } | |
4008 | } | |
4009 | ||
4010 | if (processing_gcc_compilation != 0) | |
4011 | { | |
5c80ed9d | 4012 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
4013 | |
4014 | /* This symbol table contains stabs-in-ecoff entries. */ | |
4015 | ||
025bb325 | 4016 | /* Parse local symbols first. */ |
c906108c | 4017 | |
025bb325 | 4018 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr. */ |
c906108c | 4019 | { |
dd707e8e | 4020 | mdebugread_objfile = NULL; |
c906108c SS |
4021 | return; |
4022 | } | |
4023 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
4024 | { | |
4025 | SYMR sh; | |
4026 | char *name; | |
4027 | CORE_ADDR valu; | |
4028 | ||
4029 | (*swap_sym_in) (cur_bfd, | |
4030 | (((char *) debug_info->external_sym) | |
4031 | + (fh->isymBase + cur_sdx) * external_sym_size), | |
4032 | &sh); | |
4033 | name = debug_info->ss + fh->issBase + sh.iss; | |
4034 | valu = sh.value; | |
4035 | /* XXX This is a hack. It will go away! */ | |
4036 | if (ECOFF_IS_STAB (&sh) || (name[0] == '#')) | |
4037 | { | |
4038 | int type_code = ECOFF_UNMARK_STAB (sh.index); | |
4039 | ||
4040 | /* We should never get non N_STAB symbols here, but they | |
c5aa993b JM |
4041 | should be harmless, so keep process_one_symbol from |
4042 | complaining about them. */ | |
c906108c SS |
4043 | if (type_code & N_STAB) |
4044 | { | |
16db6055 EZ |
4045 | /* If we found a trailing N_SO with no name, process |
4046 | it here instead of in process_one_symbol, so we | |
4047 | can keep a handle to its symtab. The symtab | |
4048 | would otherwise be ended twice, once in | |
025bb325 | 4049 | process_one_symbol, and once after this loop. */ |
16db6055 | 4050 | if (type_code == N_SO |
46212e0b | 4051 | && get_last_source_file () |
16db6055 EZ |
4052 | && previous_stab_code != (unsigned char) N_SO |
4053 | && *name == '\000') | |
4054 | { | |
4055 | valu += ANOFFSET (pst->section_offsets, | |
5c80ed9d | 4056 | SECT_OFF_TEXT (objfile)); |
16db6055 | 4057 | previous_stab_code = N_SO; |
5c80ed9d TT |
4058 | st = end_symtab (valu, objfile, |
4059 | SECT_OFF_TEXT (objfile)); | |
16db6055 EZ |
4060 | end_stabs (); |
4061 | last_symtab_ended = 1; | |
4062 | } | |
4063 | else | |
4064 | { | |
4065 | last_symtab_ended = 0; | |
4066 | process_one_symbol (type_code, 0, valu, name, | |
5c80ed9d | 4067 | pst->section_offsets, objfile); |
16db6055 | 4068 | } |
c906108c SS |
4069 | } |
4070 | /* Similarly a hack. */ | |
4071 | else if (name[0] == '#') | |
4072 | { | |
4073 | process_one_symbol (N_SLINE, 0, valu, name, | |
5c80ed9d | 4074 | pst->section_offsets, objfile); |
c906108c SS |
4075 | } |
4076 | if (type_code == N_FUN) | |
4077 | { | |
4078 | /* Make up special symbol to contain | |
025bb325 | 4079 | procedure specific info. */ |
f92761ec | 4080 | struct mdebug_extra_func_info *e = |
b8d56208 | 4081 | ((struct mdebug_extra_func_info *) |
dd707e8e | 4082 | obstack_alloc (&mdebugread_objfile->objfile_obstack, |
b8d56208 | 4083 | sizeof (struct mdebug_extra_func_info))); |
f92761ec | 4084 | struct symbol *s = new_symbol (MDEBUG_EFI_SYMBOL_NAME); |
c906108c | 4085 | |
f92761ec | 4086 | memset (e, 0, sizeof (struct mdebug_extra_func_info)); |
176620f1 | 4087 | SYMBOL_DOMAIN (s) = LABEL_DOMAIN; |
f1e6e072 | 4088 | SYMBOL_ACLASS_INDEX (s) = LOC_CONST; |
5c80ed9d | 4089 | SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_void; |
9918cab9 | 4090 | SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e; |
c906108c SS |
4091 | e->pdr.framereg = -1; |
4092 | add_symbol_to_list (s, &local_symbols); | |
4093 | } | |
4094 | } | |
4095 | else if (sh.st == stLabel) | |
4096 | { | |
4097 | if (sh.index == indexNil) | |
4098 | { | |
4099 | /* This is what the gcc2_compiled and __gnu_compiled_* | |
4100 | show up as. So don't complain. */ | |
4101 | ; | |
4102 | } | |
4103 | else | |
4104 | { | |
025bb325 | 4105 | /* Handle encoded stab line number. */ |
3e43a32a | 4106 | valu += ANOFFSET (pst->section_offsets, |
5c80ed9d | 4107 | SECT_OFF_TEXT (objfile)); |
fbf65064 UW |
4108 | record_line (current_subfile, sh.index, |
4109 | gdbarch_addr_bits_remove (gdbarch, valu)); | |
c906108c SS |
4110 | } |
4111 | } | |
4112 | else if (sh.st == stProc || sh.st == stStaticProc | |
4113 | || sh.st == stStatic || sh.st == stEnd) | |
025bb325 | 4114 | /* These are generated by gcc-2.x, do not complain. */ |
c906108c SS |
4115 | ; |
4116 | else | |
3e43a32a MS |
4117 | complaint (&symfile_complaints, |
4118 | _("unknown stabs symbol %s"), name); | |
c906108c | 4119 | } |
16db6055 EZ |
4120 | |
4121 | if (! last_symtab_ended) | |
4122 | { | |
5c80ed9d TT |
4123 | st = end_symtab (pst->texthigh, objfile, |
4124 | SECT_OFF_TEXT (objfile)); | |
16db6055 EZ |
4125 | end_stabs (); |
4126 | } | |
c906108c | 4127 | |
c906108c | 4128 | /* There used to be a call to sort_blocks here, but this should not |
c5aa993b JM |
4129 | be necessary for stabs symtabs. And as sort_blocks modifies the |
4130 | start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK, | |
4131 | it did the wrong thing if the first procedure in a file was | |
4132 | generated via asm statements. */ | |
c906108c SS |
4133 | |
4134 | /* Fill in procedure info next. */ | |
4135 | if (fh->cpd > 0) | |
4136 | { | |
4137 | PDR *pr_block; | |
4138 | struct cleanup *old_chain; | |
4139 | char *pdr_ptr; | |
4140 | char *pdr_end; | |
4141 | PDR *pdr_in; | |
4142 | PDR *pdr_in_end; | |
4143 | ||
4144 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
b8c9b27d | 4145 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4146 | |
4147 | pdr_ptr = ((char *) debug_info->external_pdr | |
4148 | + fh->ipdFirst * external_pdr_size); | |
4149 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4150 | pdr_in = pr_block; | |
4151 | for (; | |
4152 | pdr_ptr < pdr_end; | |
4153 | pdr_ptr += external_pdr_size, pdr_in++) | |
4154 | { | |
4155 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4156 | ||
4157 | /* Determine lowest PDR address, the PDRs are not always | |
c5aa993b | 4158 | sorted. */ |
c906108c SS |
4159 | if (pdr_in == pr_block) |
4160 | lowest_pdr_addr = pdr_in->adr; | |
4161 | else if (pdr_in->adr < lowest_pdr_addr) | |
4162 | lowest_pdr_addr = pdr_in->adr; | |
4163 | } | |
4164 | ||
4165 | pdr_in = pr_block; | |
4166 | pdr_in_end = pdr_in + fh->cpd; | |
4167 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4168 | parse_procedure (pdr_in, st, pst); | |
4169 | ||
4170 | do_cleanups (old_chain); | |
4171 | } | |
4172 | } | |
4173 | else | |
4174 | { | |
4175 | /* This symbol table contains ordinary ecoff entries. */ | |
4176 | ||
30cc903e | 4177 | int maxlines, size; |
c906108c SS |
4178 | EXTR *ext_ptr; |
4179 | ||
c906108c SS |
4180 | if (fh == 0) |
4181 | { | |
4182 | maxlines = 0; | |
5c80ed9d | 4183 | st = new_symtab ("unknown", 0, objfile); |
c906108c SS |
4184 | } |
4185 | else | |
4186 | { | |
c906108c | 4187 | maxlines = 2 * fh->cline; |
5c80ed9d | 4188 | st = new_symtab (pst->filename, maxlines, objfile); |
c906108c SS |
4189 | |
4190 | /* The proper language was already determined when building | |
4191 | the psymtab, use it. */ | |
4192 | st->language = PST_PRIVATE (pst)->pst_language; | |
4193 | } | |
4194 | ||
4195 | psymtab_language = st->language; | |
4196 | ||
4197 | lines = LINETABLE (st); | |
4198 | ||
025bb325 | 4199 | /* Get a new lexical context. */ |
c906108c SS |
4200 | |
4201 | push_parse_stack (); | |
4202 | top_stack->cur_st = st; | |
4203 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st), | |
4204 | STATIC_BLOCK); | |
5afc051b | 4205 | BLOCK_START (top_stack->cur_block) = pst->textlow; |
c906108c SS |
4206 | BLOCK_END (top_stack->cur_block) = 0; |
4207 | top_stack->blocktype = stFile; | |
c906108c SS |
4208 | top_stack->cur_type = 0; |
4209 | top_stack->procadr = 0; | |
4210 | top_stack->numargs = 0; | |
4211 | found_ecoff_debugging_info = 0; | |
4212 | ||
4213 | if (fh) | |
4214 | { | |
4215 | char *sym_ptr; | |
4216 | char *sym_end; | |
4217 | ||
025bb325 | 4218 | /* Parse local symbols first. */ |
c906108c SS |
4219 | sym_ptr = ((char *) debug_info->external_sym |
4220 | + fh->isymBase * external_sym_size); | |
4221 | sym_end = sym_ptr + fh->csym * external_sym_size; | |
4222 | while (sym_ptr < sym_end) | |
4223 | { | |
4224 | SYMR sh; | |
4225 | int c; | |
4226 | ||
4227 | (*swap_sym_in) (cur_bfd, sym_ptr, &sh); | |
4228 | c = parse_symbol (&sh, | |
4229 | debug_info->external_aux + fh->iauxBase, | |
3e43a32a | 4230 | sym_ptr, fh->fBigendian, |
5c80ed9d | 4231 | pst->section_offsets, objfile); |
c906108c SS |
4232 | sym_ptr += c * external_sym_size; |
4233 | } | |
4234 | ||
4235 | /* Linenumbers. At the end, check if we can save memory. | |
4236 | parse_lines has to look ahead an arbitrary number of PDR | |
4237 | structures, so we swap them all first. */ | |
4238 | if (fh->cpd > 0) | |
4239 | { | |
4240 | PDR *pr_block; | |
4241 | struct cleanup *old_chain; | |
4242 | char *pdr_ptr; | |
4243 | char *pdr_end; | |
4244 | PDR *pdr_in; | |
4245 | PDR *pdr_in_end; | |
4246 | ||
4247 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
4248 | ||
b8c9b27d | 4249 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4250 | |
4251 | pdr_ptr = ((char *) debug_info->external_pdr | |
4252 | + fh->ipdFirst * external_pdr_size); | |
4253 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4254 | pdr_in = pr_block; | |
4255 | for (; | |
4256 | pdr_ptr < pdr_end; | |
4257 | pdr_ptr += external_pdr_size, pdr_in++) | |
4258 | { | |
4259 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4260 | ||
4261 | /* Determine lowest PDR address, the PDRs are not always | |
4262 | sorted. */ | |
4263 | if (pdr_in == pr_block) | |
4264 | lowest_pdr_addr = pdr_in->adr; | |
4265 | else if (pdr_in->adr < lowest_pdr_addr) | |
4266 | lowest_pdr_addr = pdr_in->adr; | |
4267 | } | |
4268 | ||
3e43a32a MS |
4269 | parse_lines (fh, pr_block, lines, maxlines, |
4270 | pst, lowest_pdr_addr); | |
c906108c SS |
4271 | if (lines->nitems < fh->cline) |
4272 | lines = shrink_linetable (lines); | |
4273 | ||
4274 | /* Fill in procedure info next. */ | |
4275 | pdr_in = pr_block; | |
4276 | pdr_in_end = pdr_in + fh->cpd; | |
4277 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4278 | parse_procedure (pdr_in, 0, pst); | |
4279 | ||
4280 | do_cleanups (old_chain); | |
4281 | } | |
4282 | } | |
4283 | ||
30cc903e TT |
4284 | size = lines->nitems; |
4285 | if (size > 1) | |
4286 | --size; | |
dd707e8e | 4287 | LINETABLE (st) = obstack_copy (&mdebugread_objfile->objfile_obstack, |
30cc903e TT |
4288 | lines, |
4289 | (sizeof (struct linetable) | |
4290 | + size * sizeof (lines->item))); | |
4291 | xfree (lines); | |
c906108c SS |
4292 | |
4293 | /* .. and our share of externals. | |
025bb325 MS |
4294 | XXX use the global list to speed up things here. How? |
4295 | FIXME, Maybe quit once we have found the right number of ext's? */ | |
c906108c | 4296 | top_stack->cur_st = st; |
3e43a32a MS |
4297 | top_stack->cur_block |
4298 | = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
4299 | GLOBAL_BLOCK); | |
c906108c | 4300 | top_stack->blocktype = stFile; |
c906108c SS |
4301 | |
4302 | ext_ptr = PST_PRIVATE (pst)->extern_tab; | |
4303 | for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) | |
3e43a32a | 4304 | parse_external (ext_ptr, fh->fBigendian, |
5c80ed9d | 4305 | pst->section_offsets, objfile); |
c906108c SS |
4306 | |
4307 | /* If there are undefined symbols, tell the user. | |
c5aa993b JM |
4308 | The alpha has an undefined symbol for every symbol that is |
4309 | from a shared library, so tell the user only if verbose is on. */ | |
c906108c SS |
4310 | if (info_verbose && n_undef_symbols) |
4311 | { | |
a3f17187 | 4312 | printf_filtered (_("File %s contains %d unresolved references:"), |
05cba821 JK |
4313 | symtab_to_filename_for_display (st), |
4314 | n_undef_symbols); | |
3e43a32a MS |
4315 | printf_filtered ("\n\t%4d variables\n\t%4d " |
4316 | "procedures\n\t%4d labels\n", | |
c906108c SS |
4317 | n_undef_vars, n_undef_procs, n_undef_labels); |
4318 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; | |
4319 | ||
4320 | } | |
4321 | pop_parse_stack (); | |
4322 | ||
db0fec5c | 4323 | set_symtab_primary (st, 1); |
c906108c | 4324 | |
c906108c SS |
4325 | sort_blocks (st); |
4326 | } | |
4327 | ||
4328 | /* Now link the psymtab and the symtab. */ | |
4329 | pst->symtab = st; | |
4330 | ||
dd707e8e | 4331 | mdebugread_objfile = NULL; |
c906108c SS |
4332 | } |
4333 | \f | |
025bb325 | 4334 | /* Ancillary parsing procedures. */ |
c906108c SS |
4335 | |
4336 | /* Return 1 if the symbol pointed to by SH has a cross reference | |
4337 | to an opaque aggregate type, else 0. */ | |
4338 | ||
4339 | static int | |
fba45db2 | 4340 | has_opaque_xref (FDR *fh, SYMR *sh) |
c906108c SS |
4341 | { |
4342 | TIR tir; | |
4343 | union aux_ext *ax; | |
4344 | RNDXR rn[1]; | |
4345 | unsigned int rf; | |
4346 | ||
4347 | if (sh->index == indexNil) | |
4348 | return 0; | |
4349 | ||
4350 | ax = debug_info->external_aux + fh->iauxBase + sh->index; | |
4351 | (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir); | |
4352 | if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum) | |
4353 | return 0; | |
4354 | ||
4355 | ax++; | |
4356 | (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn); | |
4357 | if (rn->rfd == 0xfff) | |
4358 | rf = AUX_GET_ISYM (fh->fBigendian, ax + 1); | |
4359 | else | |
4360 | rf = rn->rfd; | |
4361 | if (rf != -1) | |
4362 | return 0; | |
4363 | return 1; | |
4364 | } | |
4365 | ||
4366 | /* Lookup the type at relative index RN. Return it in TPP | |
4367 | if found and in any event come up with its name PNAME. | |
4368 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). | |
025bb325 | 4369 | Return value says how many aux symbols we ate. */ |
c906108c SS |
4370 | |
4371 | static int | |
3e43a32a MS |
4372 | cross_ref (int fd, union aux_ext *ax, struct type **tpp, |
4373 | enum type_code type_code, | |
025bb325 | 4374 | /* Use to alloc new type if none is found. */ |
fba45db2 | 4375 | char **pname, int bigend, char *sym_name) |
c906108c SS |
4376 | { |
4377 | RNDXR rn[1]; | |
4378 | unsigned int rf; | |
4379 | int result = 1; | |
4380 | FDR *fh; | |
4381 | char *esh; | |
4382 | SYMR sh; | |
4383 | int xref_fd; | |
4384 | struct mdebug_pending *pend; | |
4385 | ||
c5aa993b | 4386 | *tpp = (struct type *) NULL; |
c906108c SS |
4387 | |
4388 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
4389 | ||
025bb325 | 4390 | /* Escape index means 'the next one'. */ |
c906108c SS |
4391 | if (rn->rfd == 0xfff) |
4392 | { | |
4393 | result++; | |
4394 | rf = AUX_GET_ISYM (bigend, ax + 1); | |
4395 | } | |
4396 | else | |
4397 | { | |
4398 | rf = rn->rfd; | |
4399 | } | |
4400 | ||
4401 | /* mips cc uses a rf of -1 for opaque struct definitions. | |
4402 | Set TYPE_FLAG_STUB for these types so that check_typedef will | |
4403 | resolve them if the struct gets defined in another compilation unit. */ | |
4404 | if (rf == -1) | |
4405 | { | |
4406 | *pname = "<undefined>"; | |
3e43a32a | 4407 | *tpp = init_type (type_code, 0, TYPE_FLAG_STUB, |
dd707e8e | 4408 | (char *) NULL, mdebugread_objfile); |
c906108c SS |
4409 | return result; |
4410 | } | |
4411 | ||
4412 | /* mips cc uses an escaped rn->index of 0 for struct return types | |
025bb325 | 4413 | of procedures that were compiled without -g. These will always remain |
c906108c SS |
4414 | undefined. */ |
4415 | if (rn->rfd == 0xfff && rn->index == 0) | |
4416 | { | |
4417 | *pname = "<undefined>"; | |
4418 | return result; | |
4419 | } | |
4420 | ||
4421 | /* Find the relative file descriptor and the symbol in it. */ | |
4422 | fh = get_rfd (fd, rf); | |
4423 | xref_fd = fh - debug_info->fdr; | |
4424 | ||
4425 | if (rn->index >= fh->csym) | |
4426 | { | |
4427 | /* File indirect entry is corrupt. */ | |
4428 | *pname = "<illegal>"; | |
23136709 | 4429 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4430 | return result; |
4431 | } | |
4432 | ||
4433 | /* If we have processed this symbol then we left a forwarding | |
4434 | pointer to the type in the pending list. If not, we`ll put | |
4435 | it in a list of pending types, to be processed later when | |
4436 | the file will be. In any event, we collect the name for the | |
4437 | type here. */ | |
4438 | ||
4439 | esh = ((char *) debug_info->external_sym | |
4440 | + ((fh->isymBase + rn->index) | |
4441 | * debug_swap->external_sym_size)); | |
4442 | (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh); | |
4443 | ||
4444 | /* Make sure that this type of cross reference can be handled. */ | |
4445 | if ((sh.sc != scInfo | |
4446 | || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect | |
4447 | && sh.st != stStruct && sh.st != stUnion | |
4448 | && sh.st != stEnum)) | |
c5aa993b | 4449 | && (sh.st != stBlock || !SC_IS_COMMON (sh.sc))) |
c906108c SS |
4450 | { |
4451 | /* File indirect entry is corrupt. */ | |
4452 | *pname = "<illegal>"; | |
23136709 | 4453 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4454 | return result; |
4455 | } | |
4456 | ||
4457 | *pname = debug_info->ss + fh->issBase + sh.iss; | |
4458 | ||
4459 | pend = is_pending_symbol (fh, esh); | |
4460 | if (pend) | |
4461 | *tpp = pend->t; | |
4462 | else | |
4463 | { | |
4464 | /* We have not yet seen this type. */ | |
4465 | ||
4466 | if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect) | |
4467 | { | |
4468 | TIR tir; | |
4469 | ||
4470 | /* alpha cc puts out a stTypedef with a sh.iss of zero for | |
4471 | two cases: | |
4472 | a) forward declarations of structs/unions/enums which are not | |
c5aa993b | 4473 | defined in this compilation unit. |
025bb325 | 4474 | For these the type will be void. This is a bad design decision |
c5aa993b JM |
4475 | as cross referencing across compilation units is impossible |
4476 | due to the missing name. | |
c906108c | 4477 | b) forward declarations of structs/unions/enums/typedefs which |
c5aa993b | 4478 | are defined later in this file or in another file in the same |
025bb325 | 4479 | compilation unit. Irix5 cc uses a stIndirect symbol for this. |
c5aa993b | 4480 | Simply cross reference those again to get the true type. |
c906108c SS |
4481 | The forward references are not entered in the pending list and |
4482 | in the symbol table. */ | |
4483 | ||
4484 | (*debug_swap->swap_tir_in) (bigend, | |
4485 | &(debug_info->external_aux | |
4486 | + fh->iauxBase + sh.index)->a_ti, | |
4487 | &tir); | |
4488 | if (tir.tq0 != tqNil) | |
23136709 | 4489 | complaint (&symfile_complaints, |
e2e0b3e5 | 4490 | _("illegal tq0 in forward typedef for %s"), sym_name); |
c906108c SS |
4491 | switch (tir.bt) |
4492 | { | |
4493 | case btVoid: | |
4494 | *tpp = init_type (type_code, 0, 0, (char *) NULL, | |
dd707e8e | 4495 | mdebugread_objfile); |
c5aa993b | 4496 | *pname = "<undefined>"; |
c906108c SS |
4497 | break; |
4498 | ||
4499 | case btStruct: | |
4500 | case btUnion: | |
4501 | case btEnum: | |
4502 | cross_ref (xref_fd, | |
4503 | (debug_info->external_aux | |
4504 | + fh->iauxBase + sh.index + 1), | |
4505 | tpp, type_code, pname, | |
4506 | fh->fBigendian, sym_name); | |
4507 | break; | |
4508 | ||
4509 | case btTypedef: | |
025bb325 | 4510 | /* Follow a forward typedef. This might recursively |
c5aa993b JM |
4511 | call cross_ref till we get a non typedef'ed type. |
4512 | FIXME: This is not correct behaviour, but gdb currently | |
025bb325 | 4513 | cannot handle typedefs without type copying. Type |
c5aa993b JM |
4514 | copying is impossible as we might have mutual forward |
4515 | references between two files and the copied type would not | |
4516 | get filled in when we later parse its definition. */ | |
c906108c SS |
4517 | *tpp = parse_type (xref_fd, |
4518 | debug_info->external_aux + fh->iauxBase, | |
4519 | sh.index, | |
c5aa993b | 4520 | (int *) NULL, |
c906108c SS |
4521 | fh->fBigendian, |
4522 | debug_info->ss + fh->issBase + sh.iss); | |
4523 | add_pending (fh, esh, *tpp); | |
4524 | break; | |
4525 | ||
4526 | default: | |
23136709 | 4527 | complaint (&symfile_complaints, |
e2e0b3e5 | 4528 | _("illegal bt %d in forward typedef for %s"), tir.bt, |
23136709 | 4529 | sym_name); |
c906108c | 4530 | *tpp = init_type (type_code, 0, 0, (char *) NULL, |
dd707e8e | 4531 | mdebugread_objfile); |
c906108c SS |
4532 | break; |
4533 | } | |
4534 | return result; | |
4535 | } | |
4536 | else if (sh.st == stTypedef) | |
4537 | { | |
025bb325 | 4538 | /* Parse the type for a normal typedef. This might recursively call |
c906108c SS |
4539 | cross_ref till we get a non typedef'ed type. |
4540 | FIXME: This is not correct behaviour, but gdb currently | |
025bb325 | 4541 | cannot handle typedefs without type copying. But type copying is |
c906108c SS |
4542 | impossible as we might have mutual forward references between |
4543 | two files and the copied type would not get filled in when | |
4544 | we later parse its definition. */ | |
4545 | *tpp = parse_type (xref_fd, | |
4546 | debug_info->external_aux + fh->iauxBase, | |
4547 | sh.index, | |
c5aa993b | 4548 | (int *) NULL, |
c906108c SS |
4549 | fh->fBigendian, |
4550 | debug_info->ss + fh->issBase + sh.iss); | |
4551 | } | |
4552 | else | |
4553 | { | |
4554 | /* Cross reference to a struct/union/enum which is defined | |
4555 | in another file in the same compilation unit but that file | |
4556 | has not been parsed yet. | |
4557 | Initialize the type only, it will be filled in when | |
4558 | it's definition is parsed. */ | |
dd707e8e | 4559 | *tpp = init_type (type_code, 0, 0, (char *) NULL, mdebugread_objfile); |
c906108c SS |
4560 | } |
4561 | add_pending (fh, esh, *tpp); | |
4562 | } | |
4563 | ||
025bb325 | 4564 | /* We used one auxent normally, two if we got a "next one" rf. */ |
c906108c SS |
4565 | return result; |
4566 | } | |
4567 | ||
4568 | ||
4569 | /* Quick&dirty lookup procedure, to avoid the MI ones that require | |
025bb325 | 4570 | keeping the symtab sorted. */ |
c906108c SS |
4571 | |
4572 | static struct symbol * | |
aa1ee363 | 4573 | mylookup_symbol (char *name, struct block *block, |
176620f1 | 4574 | domain_enum domain, enum address_class class) |
c906108c | 4575 | { |
8157b174 | 4576 | struct block_iterator iter; |
de4f826b | 4577 | int inc; |
e88c90f2 | 4578 | struct symbol *sym; |
c906108c | 4579 | |
c906108c | 4580 | inc = name[0]; |
de4f826b | 4581 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
c906108c | 4582 | { |
3567439c | 4583 | if (SYMBOL_LINKAGE_NAME (sym)[0] == inc |
176620f1 | 4584 | && SYMBOL_DOMAIN (sym) == domain |
c906108c | 4585 | && SYMBOL_CLASS (sym) == class |
3567439c | 4586 | && strcmp (SYMBOL_LINKAGE_NAME (sym), name) == 0) |
c906108c | 4587 | return sym; |
c906108c | 4588 | } |
e88c90f2 | 4589 | |
c906108c SS |
4590 | block = BLOCK_SUPERBLOCK (block); |
4591 | if (block) | |
176620f1 | 4592 | return mylookup_symbol (name, block, domain, class); |
c906108c SS |
4593 | return 0; |
4594 | } | |
4595 | ||
4596 | ||
de4f826b | 4597 | /* Add a new symbol S to a block B. */ |
c906108c SS |
4598 | |
4599 | static void | |
c7efd0b9 | 4600 | add_symbol (struct symbol *s, struct symtab *symtab, struct block *b) |
c906108c | 4601 | { |
c7efd0b9 | 4602 | SYMBOL_SYMTAB (s) = symtab; |
de4f826b | 4603 | dict_add_symbol (BLOCK_DICT (b), s); |
c906108c SS |
4604 | } |
4605 | ||
025bb325 | 4606 | /* Add a new block B to a symtab S. */ |
c906108c SS |
4607 | |
4608 | static void | |
fba45db2 | 4609 | add_block (struct block *b, struct symtab *s) |
c906108c SS |
4610 | { |
4611 | struct blockvector *bv = BLOCKVECTOR (s); | |
4612 | ||
12b9c64f | 4613 | bv = (struct blockvector *) xrealloc ((void *) bv, |
c906108c SS |
4614 | (sizeof (struct blockvector) |
4615 | + BLOCKVECTOR_NBLOCKS (bv) | |
4616 | * sizeof (bv->block))); | |
4617 | if (bv != BLOCKVECTOR (s)) | |
4618 | BLOCKVECTOR (s) = bv; | |
4619 | ||
4620 | BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b; | |
4621 | } | |
4622 | ||
4623 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. | |
4624 | MIPS' linenumber encoding might need more than one byte | |
4625 | to describe it, LAST is used to detect these continuation lines. | |
4626 | ||
4627 | Combining lines with the same line number seems like a bad idea. | |
4628 | E.g: There could be a line number entry with the same line number after the | |
4629 | prologue and GDB should not ignore it (this is a better way to find | |
4630 | a prologue than mips_skip_prologue). | |
4631 | But due to the compressed line table format there are line number entries | |
4632 | for the same line which are needed to bridge the gap to the next | |
025bb325 | 4633 | line number entry. These entries have a bogus address info with them |
c906108c SS |
4634 | and we are unable to tell them from intended duplicate line number |
4635 | entries. | |
4636 | This is another reason why -ggdb debugging format is preferable. */ | |
4637 | ||
4638 | static int | |
fba45db2 | 4639 | add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last) |
c906108c SS |
4640 | { |
4641 | /* DEC c89 sometimes produces zero linenos which confuse gdb. | |
025bb325 | 4642 | Change them to something sensible. */ |
c906108c SS |
4643 | if (lineno == 0) |
4644 | lineno = 1; | |
4645 | if (last == 0) | |
025bb325 | 4646 | last = -2; /* Make sure we record first line. */ |
c906108c | 4647 | |
025bb325 | 4648 | if (last == lineno) /* Skip continuation lines. */ |
c906108c SS |
4649 | return lineno; |
4650 | ||
4651 | lt->item[lt->nitems].line = lineno; | |
4652 | lt->item[lt->nitems++].pc = adr << 2; | |
4653 | return lineno; | |
4654 | } | |
4655 | \f | |
025bb325 | 4656 | /* Sorting and reordering procedures. */ |
c906108c | 4657 | |
025bb325 | 4658 | /* Blocks with a smaller low bound should come first. */ |
c906108c SS |
4659 | |
4660 | static int | |
12b9c64f | 4661 | compare_blocks (const void *arg1, const void *arg2) |
c906108c | 4662 | { |
887432a5 | 4663 | LONGEST addr_diff; |
c906108c SS |
4664 | struct block **b1 = (struct block **) arg1; |
4665 | struct block **b2 = (struct block **) arg2; | |
4666 | ||
4667 | addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2))); | |
4668 | if (addr_diff == 0) | |
4669 | return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1))); | |
4670 | return addr_diff; | |
4671 | } | |
4672 | ||
4673 | /* Sort the blocks of a symtab S. | |
4674 | Reorder the blocks in the blockvector by code-address, | |
025bb325 | 4675 | as required by some MI search routines. */ |
c906108c SS |
4676 | |
4677 | static void | |
fba45db2 | 4678 | sort_blocks (struct symtab *s) |
c906108c SS |
4679 | { |
4680 | struct blockvector *bv = BLOCKVECTOR (s); | |
4681 | ||
49323895 | 4682 | if (BLOCKVECTOR_NBLOCKS (bv) <= FIRST_LOCAL_BLOCK) |
c906108c SS |
4683 | { |
4684 | /* Cosmetic */ | |
4685 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0) | |
4686 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0; | |
4687 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0) | |
4688 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0; | |
4689 | return; | |
4690 | } | |
4691 | /* | |
4692 | * This is very unfortunate: normally all functions are compiled in | |
4693 | * the order they are found, but if the file is compiled -O3 things | |
4694 | * are very different. It would be nice to find a reliable test | |
4695 | * to detect -O3 images in advance. | |
4696 | */ | |
49323895 | 4697 | if (BLOCKVECTOR_NBLOCKS (bv) > FIRST_LOCAL_BLOCK + 1) |
c906108c SS |
4698 | qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK), |
4699 | BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK, | |
4700 | sizeof (struct block *), | |
4701 | compare_blocks); | |
4702 | ||
4703 | { | |
aa1ee363 AC |
4704 | CORE_ADDR high = 0; |
4705 | int i, j = BLOCKVECTOR_NBLOCKS (bv); | |
c906108c SS |
4706 | |
4707 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) | |
4708 | if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i))) | |
4709 | high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)); | |
4710 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high; | |
4711 | } | |
4712 | ||
4713 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = | |
4714 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK)); | |
4715 | ||
4716 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4717 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4718 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4719 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4720 | } | |
4721 | \f | |
4722 | ||
025bb325 | 4723 | /* Constructor/restructor/destructor procedures. */ |
c906108c | 4724 | |
de4f826b | 4725 | /* Allocate a new symtab for NAME. Needs an estimate of how many |
025bb325 | 4726 | linenumbers MAXLINES we'll put in it. */ |
c906108c SS |
4727 | |
4728 | static struct symtab * | |
72b9f47f | 4729 | new_symtab (const char *name, int maxlines, struct objfile *objfile) |
c906108c SS |
4730 | { |
4731 | struct symtab *s = allocate_symtab (name, objfile); | |
4732 | ||
4733 | LINETABLE (s) = new_linetable (maxlines); | |
4734 | ||
025bb325 | 4735 | /* All symtabs must have at least two blocks. */ |
c906108c | 4736 | BLOCKVECTOR (s) = new_bvect (2); |
de4f826b DC |
4737 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) |
4738 | = new_block (NON_FUNCTION_BLOCK); | |
4739 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) | |
4740 | = new_block (NON_FUNCTION_BLOCK); | |
c906108c SS |
4741 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) = |
4742 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
4743 | ||
1c9e8358 | 4744 | s->debugformat = "ECOFF"; |
c906108c SS |
4745 | return (s); |
4746 | } | |
4747 | ||
025bb325 | 4748 | /* Allocate a new partial_symtab NAME. */ |
c906108c SS |
4749 | |
4750 | static struct partial_symtab * | |
fba45db2 | 4751 | new_psymtab (char *name, struct objfile *objfile) |
c906108c SS |
4752 | { |
4753 | struct partial_symtab *psymtab; | |
4754 | ||
4755 | psymtab = allocate_psymtab (name, objfile); | |
d4f3574e | 4756 | psymtab->section_offsets = objfile->section_offsets; |
c906108c | 4757 | |
025bb325 | 4758 | /* Keep a backpointer to the file's symbols. */ |
c906108c | 4759 | |
e38df1d0 TT |
4760 | psymtab->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
4761 | sizeof (struct symloc)); | |
12b9c64f | 4762 | memset (psymtab->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
4763 | CUR_BFD (psymtab) = cur_bfd; |
4764 | DEBUG_SWAP (psymtab) = debug_swap; | |
4765 | DEBUG_INFO (psymtab) = debug_info; | |
4766 | PENDING_LIST (psymtab) = pending_list; | |
4767 | ||
025bb325 | 4768 | /* The way to turn this into a symtab is to call... */ |
257e7a09 | 4769 | psymtab->read_symtab = mdebug_read_symtab; |
c906108c SS |
4770 | return (psymtab); |
4771 | } | |
4772 | ||
4773 | ||
4774 | /* Allocate a linetable array of the given SIZE. Since the struct | |
4775 | already includes one item, we subtract one when calculating the | |
4776 | proper size to allocate. */ | |
4777 | ||
4778 | static struct linetable * | |
fba45db2 | 4779 | new_linetable (int size) |
c906108c SS |
4780 | { |
4781 | struct linetable *l; | |
4782 | ||
30cc903e TT |
4783 | if (size > 1) |
4784 | --size; | |
4785 | size = size * sizeof (l->item) + sizeof (struct linetable); | |
c906108c SS |
4786 | l = (struct linetable *) xmalloc (size); |
4787 | l->nitems = 0; | |
4788 | return l; | |
4789 | } | |
4790 | ||
025bb325 | 4791 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, |
c906108c SS |
4792 | I am not so sure about the 3.4 ones. |
4793 | ||
4794 | Since the struct linetable already includes one item, we subtract one when | |
4795 | calculating the proper size to allocate. */ | |
4796 | ||
4797 | static struct linetable * | |
fba45db2 | 4798 | shrink_linetable (struct linetable *lt) |
c906108c | 4799 | { |
12b9c64f | 4800 | return (struct linetable *) xrealloc ((void *) lt, |
c906108c SS |
4801 | (sizeof (struct linetable) |
4802 | + ((lt->nitems - 1) | |
4803 | * sizeof (lt->item)))); | |
4804 | } | |
4805 | ||
025bb325 | 4806 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ |
c906108c SS |
4807 | |
4808 | static struct blockvector * | |
fba45db2 | 4809 | new_bvect (int nblocks) |
c906108c SS |
4810 | { |
4811 | struct blockvector *bv; | |
4812 | int size; | |
4813 | ||
4814 | size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); | |
4815 | bv = (struct blockvector *) xzalloc (size); | |
4816 | ||
4817 | BLOCKVECTOR_NBLOCKS (bv) = nblocks; | |
4818 | ||
4819 | return bv; | |
4820 | } | |
4821 | ||
de4f826b DC |
4822 | /* Allocate and zero a new block, and set its BLOCK_DICT. If function |
4823 | is non-zero, assume the block is associated to a function, and make | |
4824 | sure that the symbols are stored linearly; otherwise, store them | |
4825 | hashed. */ | |
c906108c SS |
4826 | |
4827 | static struct block * | |
de4f826b | 4828 | new_block (enum block_type type) |
c906108c | 4829 | { |
a1632d59 DC |
4830 | /* FIXME: carlton/2003-09-11: This should use allocate_block to |
4831 | allocate the block. Which, in turn, suggests that the block | |
4832 | should be allocated on an obstack. */ | |
de4f826b | 4833 | struct block *retval = xzalloc (sizeof (struct block)); |
c906108c | 4834 | |
de4f826b DC |
4835 | if (type == FUNCTION_BLOCK) |
4836 | BLOCK_DICT (retval) = dict_create_linear_expandable (); | |
4837 | else | |
4838 | BLOCK_DICT (retval) = dict_create_hashed_expandable (); | |
c906108c | 4839 | |
de4f826b | 4840 | return retval; |
c906108c SS |
4841 | } |
4842 | ||
025bb325 | 4843 | /* Create a new symbol with printname NAME. */ |
c906108c SS |
4844 | |
4845 | static struct symbol * | |
fba45db2 | 4846 | new_symbol (char *name) |
c906108c | 4847 | { |
e623cf5d | 4848 | struct symbol *s = allocate_symbol (mdebugread_objfile); |
c906108c | 4849 | |
f85f34ed TT |
4850 | SYMBOL_SET_LANGUAGE (s, psymtab_language, |
4851 | &mdebugread_objfile->objfile_obstack); | |
dd707e8e | 4852 | SYMBOL_SET_NAMES (s, name, strlen (name), 1, mdebugread_objfile); |
c906108c SS |
4853 | return s; |
4854 | } | |
4855 | ||
025bb325 | 4856 | /* Create a new type with printname NAME. */ |
c906108c SS |
4857 | |
4858 | static struct type * | |
fba45db2 | 4859 | new_type (char *name) |
c906108c SS |
4860 | { |
4861 | struct type *t; | |
4862 | ||
dd707e8e | 4863 | t = alloc_type (mdebugread_objfile); |
c906108c | 4864 | TYPE_NAME (t) = name; |
b4ba55a1 | 4865 | INIT_CPLUS_SPECIFIC (t); |
c906108c SS |
4866 | return t; |
4867 | } | |
4868 | \f | |
4869 | /* Read ECOFF debugging information from a BFD section. This is | |
4870 | called from elfread.c. It parses the section into a | |
4871 | ecoff_debug_info struct, and then lets the rest of the file handle | |
4872 | it as normal. */ | |
4873 | ||
4874 | void | |
fba45db2 KB |
4875 | elfmdebug_build_psymtabs (struct objfile *objfile, |
4876 | const struct ecoff_debug_swap *swap, asection *sec) | |
c906108c SS |
4877 | { |
4878 | bfd *abfd = objfile->obfd; | |
4879 | struct ecoff_debug_info *info; | |
7134143f DJ |
4880 | struct cleanup *back_to; |
4881 | ||
4882 | /* FIXME: It's not clear whether we should be getting minimal symbol | |
4883 | information from .mdebug in an ELF file, or whether we will. | |
4884 | Re-initialize the minimal symbol reader in case we do. */ | |
4885 | ||
4886 | init_minimal_symbol_collection (); | |
4887 | back_to = make_cleanup_discard_minimal_symbols (); | |
c906108c SS |
4888 | |
4889 | info = ((struct ecoff_debug_info *) | |
8b92e4d5 | 4890 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
4891 | sizeof (struct ecoff_debug_info))); |
4892 | ||
4893 | if (!(*swap->read_debug_info) (abfd, sec, info)) | |
8a3fe4f8 | 4894 | error (_("Error reading ECOFF debugging information: %s"), |
c906108c SS |
4895 | bfd_errmsg (bfd_get_error ())); |
4896 | ||
d4f3574e | 4897 | mdebug_build_psymtabs (objfile, swap, info); |
7134143f DJ |
4898 | |
4899 | install_minimal_symbols (objfile); | |
4900 | do_cleanups (back_to); | |
c906108c | 4901 | } |
c906108c SS |
4902 | |
4903 | void | |
fba45db2 | 4904 | _initialize_mdebugread (void) |
c906108c | 4905 | { |
0a9d309a | 4906 | basic_type_data = register_objfile_data (); |
f1e6e072 TT |
4907 | |
4908 | mdebug_register_index | |
4909 | = register_symbol_register_impl (LOC_REGISTER, &mdebug_register_funcs); | |
4910 | mdebug_regparm_index | |
4911 | = register_symbol_register_impl (LOC_REGPARM_ADDR, &mdebug_register_funcs); | |
c906108c | 4912 | } |