Commit | Line | Data |
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c906108c | 1 | /* Read a symbol table in ECOFF format (Third-Eye). |
ee300cd4 | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 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" |
0baae8db | 49 | #include "buildsym-legacy.h" |
c906108c SS |
50 | #include "stabsread.h" |
51 | #include "complaints.h" | |
52 | #include "demangle.h" | |
50f182aa | 53 | #include "gdb-demangle.h" |
fe898f56 | 54 | #include "block.h" |
de4f826b | 55 | #include "dictionary.h" |
5b123146 | 56 | #include "mdebugread.h" |
53ce3c39 | 57 | #include <sys/stat.h> |
ccefe4c4 | 58 | #include "psympriv.h" |
05cba821 | 59 | #include "source.h" |
c906108c | 60 | |
c906108c SS |
61 | #include "bfd.h" |
62 | ||
025bb325 | 63 | #include "coff/ecoff.h" /* COFF-like aspects of ecoff files. */ |
c906108c SS |
64 | |
65 | #include "libaout.h" /* Private BFD a.out information. */ | |
66 | #include "aout/aout64.h" | |
025bb325 | 67 | #include "aout/stab_gnu.h" /* STABS information. */ |
c906108c SS |
68 | |
69 | #include "expression.h" | |
c906108c | 70 | |
025bb325 | 71 | /* Provide a way to test if we have both ECOFF and ELF symbol tables. |
c906108c SS |
72 | We use this define in order to know whether we should override a |
73 | symbol's ECOFF section with its ELF section. This is necessary in | |
74 | case the symbol's ELF section could not be represented in ECOFF. */ | |
75 | #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
76 | && bfd_get_section_by_name (bfd, ".mdebug") != NULL) | |
91a81f69 TT |
77 | |
78 | /* The objfile we are currently reading. */ | |
79 | ||
dd707e8e | 80 | static struct objfile *mdebugread_objfile; |
91a81f69 | 81 | |
c906108c | 82 | \f |
c5aa993b | 83 | |
c906108c SS |
84 | /* We put a pointer to this structure in the read_symtab_private field |
85 | of the psymtab. */ | |
86 | ||
87 | struct symloc | |
c5aa993b JM |
88 | { |
89 | /* Index of the FDR that this psymtab represents. */ | |
90 | int fdr_idx; | |
91 | /* The BFD that the psymtab was created from. */ | |
92 | bfd *cur_bfd; | |
93 | const struct ecoff_debug_swap *debug_swap; | |
94 | struct ecoff_debug_info *debug_info; | |
95 | struct mdebug_pending **pending_list; | |
96 | /* Pointer to external symbols for this file. */ | |
97 | EXTR *extern_tab; | |
98 | /* Size of extern_tab. */ | |
99 | int extern_count; | |
100 | enum language pst_language; | |
101 | }; | |
c906108c SS |
102 | |
103 | #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private) | |
104 | #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx) | |
105 | #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd) | |
106 | #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap) | |
107 | #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info) | |
108 | #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list) | |
109 | ||
110 | #define SC_IS_TEXT(sc) ((sc) == scText \ | |
111 | || (sc) == scRConst \ | |
112 | || (sc) == scInit \ | |
113 | || (sc) == scFini) | |
114 | #define SC_IS_DATA(sc) ((sc) == scData \ | |
115 | || (sc) == scSData \ | |
116 | || (sc) == scRData \ | |
117 | || (sc) == scPData \ | |
118 | || (sc) == scXData) | |
119 | #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon) | |
0e931cf0 JB |
120 | #define SC_IS_BSS(sc) ((sc) == scBss) |
121 | #define SC_IS_SBSS(sc) ((sc) == scSBss) | |
c906108c | 122 | #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined) |
c906108c | 123 | \f |
025bb325 | 124 | /* Various complaints about symbol reading that don't abort the process. */ |
23136709 KB |
125 | static void |
126 | index_complaint (const char *arg1) | |
127 | { | |
b98664d3 | 128 | complaint (_("bad aux index at symbol %s"), arg1); |
23136709 | 129 | } |
c906108c | 130 | |
23136709 KB |
131 | static void |
132 | unknown_ext_complaint (const char *arg1) | |
133 | { | |
b98664d3 | 134 | complaint (_("unknown external symbol %s"), arg1); |
23136709 | 135 | } |
c906108c | 136 | |
23136709 KB |
137 | static void |
138 | basic_type_complaint (int arg1, const char *arg2) | |
139 | { | |
b98664d3 | 140 | complaint (_("cannot map ECOFF basic type 0x%x for %s"), |
23136709 KB |
141 | arg1, arg2); |
142 | } | |
c906108c | 143 | |
23136709 KB |
144 | static void |
145 | bad_tag_guess_complaint (const char *arg1) | |
146 | { | |
b98664d3 | 147 | complaint (_("guessed tag type of %s incorrectly"), arg1); |
23136709 | 148 | } |
c906108c | 149 | |
23136709 KB |
150 | static void |
151 | bad_rfd_entry_complaint (const char *arg1, int arg2, int arg3) | |
152 | { | |
b98664d3 | 153 | complaint (_("bad rfd entry for %s: file %d, index %d"), |
23136709 KB |
154 | arg1, arg2, arg3); |
155 | } | |
c906108c | 156 | |
23136709 KB |
157 | static void |
158 | unexpected_type_code_complaint (const char *arg1) | |
159 | { | |
b98664d3 | 160 | complaint (_("unexpected type code for %s"), arg1); |
23136709 | 161 | } |
c906108c | 162 | |
025bb325 | 163 | /* Macros and extra defs. */ |
c906108c | 164 | |
025bb325 | 165 | /* Puns: hard to find whether -g was used and how. */ |
c906108c SS |
166 | |
167 | #define MIN_GLEVEL GLEVEL_0 | |
168 | #define compare_glevel(a,b) \ | |
169 | (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \ | |
170 | ((b) == GLEVEL_3) ? -1 : (int)((b) - (a))) | |
171 | \f | |
025bb325 | 172 | /* Things that really are local to this module. */ |
c906108c | 173 | |
025bb325 | 174 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
175 | |
176 | static enum language psymtab_language = language_unknown; | |
177 | ||
178 | /* Current BFD. */ | |
179 | ||
180 | static bfd *cur_bfd; | |
181 | ||
182 | /* How to parse debugging information for CUR_BFD. */ | |
183 | ||
184 | static const struct ecoff_debug_swap *debug_swap; | |
185 | ||
186 | /* Pointers to debugging information for CUR_BFD. */ | |
187 | ||
188 | static struct ecoff_debug_info *debug_info; | |
189 | ||
025bb325 | 190 | /* Pointer to current file decriptor record, and its index. */ |
c906108c SS |
191 | |
192 | static FDR *cur_fdr; | |
193 | static int cur_fd; | |
194 | ||
025bb325 | 195 | /* Index of current symbol. */ |
c906108c SS |
196 | |
197 | static int cur_sdx; | |
198 | ||
199 | /* Note how much "debuggable" this image is. We would like | |
025bb325 | 200 | to see at least one FDR with full symbols. */ |
c906108c SS |
201 | |
202 | static int max_gdbinfo; | |
203 | static int max_glevel; | |
204 | ||
025bb325 | 205 | /* When examining .o files, report on undefined symbols. */ |
c906108c SS |
206 | |
207 | static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs; | |
208 | ||
209 | /* Pseudo symbol to use when putting stabs into the symbol table. */ | |
210 | ||
211 | static char stabs_symbol[] = STABS_SYMBOL; | |
212 | ||
c906108c SS |
213 | /* Nonzero if we have seen ecoff debugging info for a file. */ |
214 | ||
215 | static int found_ecoff_debugging_info; | |
216 | ||
025bb325 | 217 | /* Forward declarations. */ |
c906108c | 218 | |
12b9c64f | 219 | static int upgrade_type (int, struct type **, int, union aux_ext *, |
a121b7c1 | 220 | int, const char *); |
c906108c | 221 | |
8dddcb8f TT |
222 | static void parse_partial_symbols (minimal_symbol_reader &, |
223 | struct objfile *); | |
c906108c | 224 | |
a14ed312 | 225 | static int has_opaque_xref (FDR *, SYMR *); |
c906108c | 226 | |
12b9c64f | 227 | static int cross_ref (int, union aux_ext *, struct type **, enum type_code, |
a121b7c1 | 228 | const char **, int, const char *); |
c906108c | 229 | |
a121b7c1 | 230 | static struct symbol *new_symbol (const char *); |
c906108c | 231 | |
a14ed312 | 232 | static struct type *new_type (char *); |
c906108c | 233 | |
de4f826b | 234 | enum block_type { FUNCTION_BLOCK, NON_FUNCTION_BLOCK }; |
c906108c | 235 | |
5ffa0793 | 236 | static struct block *new_block (enum block_type, enum language); |
de4f826b | 237 | |
43f3e411 | 238 | static struct compunit_symtab *new_symtab (const char *, int, struct objfile *); |
c906108c | 239 | |
a14ed312 | 240 | static struct linetable *new_linetable (int); |
c906108c | 241 | |
a14ed312 | 242 | static struct blockvector *new_bvect (int); |
c906108c | 243 | |
a14ed312 | 244 | static struct type *parse_type (int, union aux_ext *, unsigned int, int *, |
a121b7c1 | 245 | int, const char *); |
c906108c | 246 | |
a121b7c1 | 247 | static struct symbol *mylookup_symbol (const char *, const struct block *, |
3977b71f | 248 | domain_enum, enum address_class); |
c906108c | 249 | |
a14ed312 | 250 | static void sort_blocks (struct symtab *); |
c906108c | 251 | |
a121b7c1 | 252 | static struct partial_symtab *new_psymtab (const char *, struct objfile *); |
c906108c | 253 | |
5c80ed9d TT |
254 | static void psymtab_to_symtab_1 (struct objfile *objfile, |
255 | struct partial_symtab *, const char *); | |
c906108c | 256 | |
a14ed312 | 257 | static void add_block (struct block *, struct symtab *); |
c906108c | 258 | |
c7efd0b9 | 259 | static void add_symbol (struct symbol *, struct symtab *, struct block *); |
c906108c | 260 | |
a14ed312 | 261 | static int add_line (struct linetable *, int, CORE_ADDR, int); |
c906108c | 262 | |
a14ed312 | 263 | static struct linetable *shrink_linetable (struct linetable *); |
c906108c | 264 | |
12b9c64f AO |
265 | static void handle_psymbol_enumerators (struct objfile *, FDR *, int, |
266 | CORE_ADDR); | |
c906108c | 267 | |
a121b7c1 | 268 | static const char *mdebug_next_symbol_text (struct objfile *); |
c906108c | 269 | \f |
257e7a09 YQ |
270 | /* Exported procedure: Builds a symtab from the partial symtab SELF. |
271 | Restores the environment in effect when SELF was created, delegates | |
c906108c | 272 | most of the work to an ancillary procedure, and sorts |
257e7a09 | 273 | and reorders the symtab list at the end. SELF is not NULL. */ |
c906108c SS |
274 | |
275 | static void | |
257e7a09 | 276 | mdebug_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 277 | { |
c906108c SS |
278 | if (info_verbose) |
279 | { | |
257e7a09 | 280 | printf_filtered (_("Reading in symbols for %s..."), self->filename); |
c906108c SS |
281 | gdb_flush (gdb_stdout); |
282 | } | |
283 | ||
284 | next_symbol_text_func = mdebug_next_symbol_text; | |
285 | ||
257e7a09 | 286 | psymtab_to_symtab_1 (objfile, self, self->filename); |
c906108c SS |
287 | |
288 | /* Match with global symbols. This only needs to be done once, | |
025bb325 | 289 | after all of the symtabs and dependencies have been read in. */ |
5c80ed9d | 290 | scan_file_globals (objfile); |
c906108c SS |
291 | |
292 | if (info_verbose) | |
a3f17187 | 293 | printf_filtered (_("done.\n")); |
c906108c SS |
294 | } |
295 | \f | |
025bb325 | 296 | /* File-level interface functions. */ |
c906108c | 297 | |
025bb325 | 298 | /* Find a file descriptor given its index RF relative to a file CF. */ |
c906108c SS |
299 | |
300 | static FDR * | |
fba45db2 | 301 | get_rfd (int cf, int rf) |
c906108c SS |
302 | { |
303 | FDR *fdrs; | |
52f0bd74 | 304 | FDR *f; |
c906108c SS |
305 | RFDT rfd; |
306 | ||
307 | fdrs = debug_info->fdr; | |
308 | f = fdrs + cf; | |
025bb325 | 309 | /* Object files do not have the RFD table, all refs are absolute. */ |
c906108c SS |
310 | if (f->rfdBase == 0) |
311 | return fdrs + rf; | |
312 | (*debug_swap->swap_rfd_in) (cur_bfd, | |
c5aa993b JM |
313 | ((char *) debug_info->external_rfd |
314 | + ((f->rfdBase + rf) | |
315 | * debug_swap->external_rfd_size)), | |
316 | &rfd); | |
c906108c SS |
317 | return fdrs + rfd; |
318 | } | |
319 | ||
025bb325 | 320 | /* Return a safer print NAME for a file descriptor. */ |
c906108c | 321 | |
a121b7c1 | 322 | static const char * |
fba45db2 | 323 | fdr_name (FDR *f) |
c906108c SS |
324 | { |
325 | if (f->rss == -1) | |
326 | return "<stripped file>"; | |
327 | if (f->rss == 0) | |
328 | return "<NFY>"; | |
329 | return debug_info->ss + f->issBase + f->rss; | |
330 | } | |
331 | ||
332 | ||
333 | /* Read in and parse the symtab of the file OBJFILE. Symbols from | |
334 | different sections are relocated via the SECTION_OFFSETS. */ | |
335 | ||
336 | void | |
8dddcb8f TT |
337 | mdebug_build_psymtabs (minimal_symbol_reader &reader, |
338 | struct objfile *objfile, | |
fba45db2 KB |
339 | const struct ecoff_debug_swap *swap, |
340 | struct ecoff_debug_info *info) | |
c906108c SS |
341 | { |
342 | cur_bfd = objfile->obfd; | |
343 | debug_swap = swap; | |
344 | debug_info = info; | |
345 | ||
d3d55eeb | 346 | stabsread_new_init (); |
d3d55eeb EZ |
347 | free_header_files (); |
348 | init_header_files (); | |
349 | ||
c906108c | 350 | /* Make sure all the FDR information is swapped in. */ |
cafb3438 | 351 | if (info->fdr == NULL) |
c906108c SS |
352 | { |
353 | char *fdr_src; | |
354 | char *fdr_end; | |
355 | FDR *fdr_ptr; | |
356 | ||
e39db4db SM |
357 | info->fdr = (FDR *) XOBNEWVEC (&objfile->objfile_obstack, FDR, |
358 | info->symbolic_header.ifdMax); | |
19ba03f4 | 359 | fdr_src = (char *) info->external_fdr; |
c906108c SS |
360 | fdr_end = (fdr_src |
361 | + info->symbolic_header.ifdMax * swap->external_fdr_size); | |
362 | fdr_ptr = info->fdr; | |
363 | for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++) | |
364 | (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr); | |
365 | } | |
366 | ||
8dddcb8f | 367 | parse_partial_symbols (reader, objfile); |
c906108c SS |
368 | |
369 | #if 0 | |
370 | /* Check to make sure file was compiled with -g. If not, warn the | |
371 | user of this limitation. */ | |
372 | if (compare_glevel (max_glevel, GLEVEL_2) < 0) | |
373 | { | |
374 | if (max_gdbinfo == 0) | |
3e43a32a MS |
375 | printf_unfiltered (_("\n%s not compiled with -g, " |
376 | "debugging support is limited.\n"), | |
c5aa993b | 377 | objfile->name); |
3e43a32a MS |
378 | printf_unfiltered (_("You should compile with -g2 or " |
379 | "-g3 for best debugging support.\n")); | |
c906108c SS |
380 | } |
381 | #endif | |
382 | } | |
383 | \f | |
384 | /* Local utilities */ | |
385 | ||
025bb325 | 386 | /* Map of FDR indexes to partial symtabs. */ |
c906108c SS |
387 | |
388 | struct pst_map | |
389 | { | |
390 | struct partial_symtab *pst; /* the psymtab proper */ | |
391 | long n_globals; /* exported globals (external symbols) */ | |
392 | long globals_offset; /* cumulative */ | |
393 | }; | |
394 | ||
395 | ||
396 | /* Utility stack, used to nest procedures and blocks properly. | |
397 | It is a doubly linked list, to avoid too many alloc/free. | |
398 | Since we might need it quite a few times it is NOT deallocated | |
025bb325 | 399 | after use. */ |
c906108c SS |
400 | |
401 | static struct parse_stack | |
c5aa993b JM |
402 | { |
403 | struct parse_stack *next, *prev; | |
025bb325 MS |
404 | struct symtab *cur_st; /* Current symtab. */ |
405 | struct block *cur_block; /* Block in it. */ | |
c5aa993b JM |
406 | |
407 | /* What are we parsing. stFile, or stBlock are for files and | |
408 | blocks. stProc or stStaticProc means we have seen the start of a | |
409 | procedure, but not the start of the block within in. When we see | |
410 | the start of that block, we change it to stNil, without pushing a | |
411 | new block, i.e. stNil means both a procedure and a block. */ | |
412 | ||
413 | int blocktype; | |
414 | ||
025bb325 MS |
415 | struct type *cur_type; /* Type we parse fields for. */ |
416 | int cur_field; /* Field number in cur_type. */ | |
417 | CORE_ADDR procadr; /* Start addres of this procedure. */ | |
418 | int numargs; /* Its argument count. */ | |
c5aa993b | 419 | } |
c906108c SS |
420 | |
421 | *top_stack; /* Top stack ptr */ | |
422 | ||
423 | ||
025bb325 | 424 | /* Enter a new lexical context. */ |
c906108c SS |
425 | |
426 | static void | |
fba45db2 | 427 | push_parse_stack (void) |
c906108c | 428 | { |
fe978cb0 | 429 | struct parse_stack *newobj; |
c906108c | 430 | |
025bb325 | 431 | /* Reuse frames if possible. */ |
c906108c | 432 | if (top_stack && top_stack->prev) |
fe978cb0 | 433 | newobj = top_stack->prev; |
c906108c | 434 | else |
8d749320 | 435 | newobj = XCNEW (struct parse_stack); |
025bb325 | 436 | /* Initialize new frame with previous content. */ |
c906108c SS |
437 | if (top_stack) |
438 | { | |
fe978cb0 | 439 | struct parse_stack *prev = newobj->prev; |
c906108c | 440 | |
fe978cb0 PA |
441 | *newobj = *top_stack; |
442 | top_stack->prev = newobj; | |
443 | newobj->prev = prev; | |
444 | newobj->next = top_stack; | |
c906108c | 445 | } |
fe978cb0 | 446 | top_stack = newobj; |
c906108c SS |
447 | } |
448 | ||
025bb325 | 449 | /* Exit a lexical context. */ |
c906108c SS |
450 | |
451 | static void | |
fba45db2 | 452 | pop_parse_stack (void) |
c906108c SS |
453 | { |
454 | if (!top_stack) | |
455 | return; | |
456 | if (top_stack->next) | |
457 | top_stack = top_stack->next; | |
458 | } | |
459 | ||
460 | ||
461 | /* Cross-references might be to things we haven't looked at | |
462 | yet, e.g. type references. To avoid too many type | |
463 | duplications we keep a quick fixup table, an array | |
025bb325 | 464 | of lists of references indexed by file descriptor. */ |
c906108c SS |
465 | |
466 | struct mdebug_pending | |
467 | { | |
468 | struct mdebug_pending *next; /* link */ | |
469 | char *s; /* the unswapped symbol */ | |
470 | struct type *t; /* its partial type descriptor */ | |
471 | }; | |
472 | ||
473 | ||
b8b98ad1 TT |
474 | /* The pending information is kept for an entire object file. We |
475 | allocate the pending information table when we create the partial | |
476 | symbols, and we store a pointer to the single table in each | |
477 | psymtab. */ | |
c906108c SS |
478 | |
479 | static struct mdebug_pending **pending_list; | |
480 | ||
025bb325 | 481 | /* Check whether we already saw symbol SH in file FH. */ |
c906108c SS |
482 | |
483 | static struct mdebug_pending * | |
fba45db2 | 484 | is_pending_symbol (FDR *fh, char *sh) |
c906108c SS |
485 | { |
486 | int f_idx = fh - debug_info->fdr; | |
52f0bd74 | 487 | struct mdebug_pending *p; |
c906108c | 488 | |
025bb325 | 489 | /* Linear search is ok, list is typically no more than 10 deep. */ |
c906108c SS |
490 | for (p = pending_list[f_idx]; p; p = p->next) |
491 | if (p->s == sh) | |
492 | break; | |
493 | return p; | |
494 | } | |
495 | ||
025bb325 | 496 | /* Add a new symbol SH of type T. */ |
c906108c SS |
497 | |
498 | static void | |
fba45db2 | 499 | add_pending (FDR *fh, char *sh, struct type *t) |
c906108c SS |
500 | { |
501 | int f_idx = fh - debug_info->fdr; | |
502 | struct mdebug_pending *p = is_pending_symbol (fh, sh); | |
503 | ||
025bb325 | 504 | /* Make sure we do not make duplicates. */ |
c906108c SS |
505 | if (!p) |
506 | { | |
e39db4db | 507 | p = XOBNEW (&mdebugread_objfile->objfile_obstack, mdebug_pending); |
c906108c SS |
508 | p->s = sh; |
509 | p->t = t; | |
510 | p->next = pending_list[f_idx]; | |
511 | pending_list[f_idx] = p; | |
512 | } | |
513 | } | |
514 | \f | |
515 | ||
025bb325 | 516 | /* Parsing Routines proper. */ |
c906108c | 517 | |
0fde2c53 DE |
518 | static void |
519 | reg_value_complaint (int regnum, int num_regs, const char *sym) | |
520 | { | |
b98664d3 | 521 | complaint (_("bad register number %d (max %d) in symbol %s"), |
0fde2c53 DE |
522 | regnum, num_regs - 1, sym); |
523 | } | |
524 | ||
025bb325 | 525 | /* Parse a single symbol. Mostly just make up a GDB symbol for it. |
c906108c SS |
526 | For blocks, procedures and types we open a new lexical context. |
527 | This is basically just a big switch on the symbol's type. Argument | |
528 | AX is the base pointer of aux symbols for this file (fh->iauxBase). | |
529 | EXT_SH points to the unswapped symbol, which is needed for struct, | |
530 | union, etc., types; it is NULL for an EXTR. BIGEND says whether | |
531 | aux symbols are big-endian or little-endian. Return count of | |
532 | SYMR's handled (normally one). */ | |
533 | ||
768a979c UW |
534 | static int |
535 | mdebug_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
536 | { | |
0fde2c53 DE |
537 | int regno = gdbarch_ecoff_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); |
538 | ||
f6efe3f8 | 539 | if (regno < 0 || regno >= gdbarch_num_cooked_regs (gdbarch)) |
0fde2c53 | 540 | { |
f6efe3f8 | 541 | reg_value_complaint (regno, gdbarch_num_cooked_regs (gdbarch), |
0fde2c53 DE |
542 | SYMBOL_PRINT_NAME (sym)); |
543 | ||
544 | regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless. */ | |
545 | } | |
546 | ||
547 | return regno; | |
768a979c UW |
548 | } |
549 | ||
550 | static const struct symbol_register_ops mdebug_register_funcs = { | |
551 | mdebug_reg_to_regnum | |
552 | }; | |
553 | ||
f1e6e072 TT |
554 | /* The "aclass" indices for computed symbols. */ |
555 | ||
556 | static int mdebug_register_index; | |
557 | static int mdebug_regparm_index; | |
558 | ||
d2242e34 PA |
559 | /* Common code for symbols describing data. */ |
560 | ||
561 | static void | |
562 | add_data_symbol (SYMR *sh, union aux_ext *ax, int bigend, | |
563 | struct symbol *s, int aclass_index, struct block *b, | |
a121b7c1 | 564 | struct objfile *objfile, const char *name) |
d2242e34 PA |
565 | { |
566 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; | |
567 | SYMBOL_ACLASS_INDEX (s) = aclass_index; | |
568 | add_symbol (s, top_stack->cur_st, b); | |
569 | ||
570 | /* Type could be missing if file is compiled without debugging info. */ | |
571 | if (SC_IS_UNDEF (sh->sc) | |
572 | || sh->sc == scNil || sh->index == indexNil) | |
573 | SYMBOL_TYPE (s) = objfile_type (objfile)->nodebug_data_symbol; | |
574 | else | |
575 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
576 | /* Value of a data symbol is its memory address. */ | |
577 | } | |
578 | ||
c906108c | 579 | static int |
fba45db2 KB |
580 | parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend, |
581 | struct section_offsets *section_offsets, struct objfile *objfile) | |
c906108c | 582 | { |
5e2b427d | 583 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 584 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; |
12b9c64f | 585 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
a121b7c1 | 586 | const char *name; |
c906108c SS |
587 | struct symbol *s; |
588 | struct block *b; | |
589 | struct mdebug_pending *pend; | |
590 | struct type *t; | |
c906108c | 591 | int count = 1; |
c906108c SS |
592 | TIR tir; |
593 | long svalue = sh->value; | |
594 | int bitsize; | |
595 | ||
cafb3438 | 596 | if (ext_sh == NULL) |
c906108c SS |
597 | name = debug_info->ssext + sh->iss; |
598 | else | |
599 | name = debug_info->ss + cur_fdr->issBase + sh->iss; | |
600 | ||
601 | switch (sh->sc) | |
602 | { | |
603 | case scText: | |
604 | case scRConst: | |
605 | /* Do not relocate relative values. | |
c5aa993b JM |
606 | The value of a stEnd symbol is the displacement from the |
607 | corresponding start symbol value. | |
608 | The value of a stBlock symbol is the displacement from the | |
609 | procedure address. */ | |
c906108c | 610 | if (sh->st != stEnd && sh->st != stBlock) |
b8fbeb18 | 611 | sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
612 | break; |
613 | case scData: | |
614 | case scSData: | |
615 | case scRData: | |
616 | case scPData: | |
617 | case scXData: | |
b8fbeb18 | 618 | sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
619 | break; |
620 | case scBss: | |
621 | case scSBss: | |
b8fbeb18 | 622 | sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
623 | break; |
624 | } | |
625 | ||
626 | switch (sh->st) | |
627 | { | |
628 | case stNil: | |
629 | break; | |
630 | ||
025bb325 | 631 | case stGlobal: /* External symbol, goes into global block. */ |
439247b6 | 632 | b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack->cur_st), |
c906108c SS |
633 | GLOBAL_BLOCK); |
634 | s = new_symbol (name); | |
635 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
d2242e34 PA |
636 | add_data_symbol (sh, ax, bigend, s, LOC_STATIC, b, objfile, name); |
637 | break; | |
c906108c | 638 | |
025bb325 | 639 | case stStatic: /* Static data, goes into current block. */ |
c906108c SS |
640 | b = top_stack->cur_block; |
641 | s = new_symbol (name); | |
c5aa993b | 642 | if (SC_IS_COMMON (sh->sc)) |
c906108c SS |
643 | { |
644 | /* It is a FORTRAN common block. At least for SGI Fortran the | |
645 | address is not in the symbol; we need to fix it later in | |
646 | scan_file_globals. */ | |
3567439c | 647 | int bucket = hashname (SYMBOL_LINKAGE_NAME (s)); |
c906108c SS |
648 | SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket]; |
649 | global_sym_chain[bucket] = s; | |
650 | } | |
651 | else | |
652 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
d2242e34 PA |
653 | add_data_symbol (sh, ax, bigend, s, LOC_STATIC, b, objfile, name); |
654 | break; | |
c906108c | 655 | |
025bb325 | 656 | case stLocal: /* Local variable, goes into current block. */ |
768a979c UW |
657 | b = top_stack->cur_block; |
658 | s = new_symbol (name); | |
659 | SYMBOL_VALUE (s) = svalue; | |
c906108c | 660 | if (sh->sc == scRegister) |
d2242e34 PA |
661 | add_data_symbol (sh, ax, bigend, s, mdebug_register_index, |
662 | b, objfile, name); | |
c906108c | 663 | else |
d2242e34 PA |
664 | add_data_symbol (sh, ax, bigend, s, LOC_LOCAL, |
665 | b, objfile, name); | |
c906108c SS |
666 | break; |
667 | ||
025bb325 MS |
668 | case stParam: /* Arg to procedure, goes into current |
669 | block. */ | |
c906108c SS |
670 | max_gdbinfo++; |
671 | found_ecoff_debugging_info = 1; | |
672 | top_stack->numargs++; | |
673 | ||
674 | /* Special GNU C++ name. */ | |
675 | if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0) | |
025bb325 | 676 | name = "this"; /* FIXME, not alloc'd in obstack. */ |
c906108c SS |
677 | s = new_symbol (name); |
678 | ||
176620f1 | 679 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
2a2d4dc3 | 680 | SYMBOL_IS_ARGUMENT (s) = 1; |
c906108c SS |
681 | switch (sh->sc) |
682 | { | |
683 | case scRegister: | |
684 | /* Pass by value in register. */ | |
f1e6e072 | 685 | SYMBOL_ACLASS_INDEX (s) = mdebug_register_index; |
c906108c SS |
686 | break; |
687 | case scVar: | |
688 | /* Pass by reference on stack. */ | |
f1e6e072 | 689 | SYMBOL_ACLASS_INDEX (s) = LOC_REF_ARG; |
c906108c SS |
690 | break; |
691 | case scVarRegister: | |
692 | /* Pass by reference in register. */ | |
f1e6e072 | 693 | SYMBOL_ACLASS_INDEX (s) = mdebug_regparm_index; |
c906108c SS |
694 | break; |
695 | default: | |
696 | /* Pass by value on stack. */ | |
f1e6e072 | 697 | SYMBOL_ACLASS_INDEX (s) = LOC_ARG; |
c906108c SS |
698 | break; |
699 | } | |
700 | SYMBOL_VALUE (s) = svalue; | |
701 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
c7efd0b9 | 702 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
703 | break; |
704 | ||
025bb325 | 705 | case stLabel: /* label, goes into current block. */ |
c906108c | 706 | s = new_symbol (name); |
025bb325 | 707 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; /* So that it can be used */ |
f1e6e072 | 708 | SYMBOL_ACLASS_INDEX (s) = LOC_LABEL; /* but not misused. */ |
c906108c | 709 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; |
46bf5051 | 710 | SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_int; |
c7efd0b9 | 711 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
712 | break; |
713 | ||
025bb325 MS |
714 | case stProc: /* Procedure, usually goes into global block. */ |
715 | case stStaticProc: /* Static procedure, goes into current block. */ | |
1fb4c65b JB |
716 | /* For stProc symbol records, we need to check the storage class |
717 | as well, as only (stProc, scText) entries represent "real" | |
718 | procedures - See the Compaq document titled "Object File / | |
719 | Symbol Table Format Specification" for more information. | |
720 | If the storage class is not scText, we discard the whole block | |
721 | of symbol records for this stProc. */ | |
722 | if (sh->st == stProc && sh->sc != scText) | |
723 | { | |
724 | char *ext_tsym = ext_sh; | |
725 | int keep_counting = 1; | |
726 | SYMR tsym; | |
727 | ||
728 | while (keep_counting) | |
729 | { | |
730 | ext_tsym += external_sym_size; | |
731 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
732 | count++; | |
733 | switch (tsym.st) | |
734 | { | |
735 | case stParam: | |
736 | break; | |
737 | case stEnd: | |
738 | keep_counting = 0; | |
739 | break; | |
740 | default: | |
b98664d3 | 741 | complaint (_("unknown symbol type 0x%x"), sh->st); |
1fb4c65b JB |
742 | break; |
743 | } | |
744 | } | |
745 | break; | |
746 | } | |
c906108c | 747 | s = new_symbol (name); |
176620f1 | 748 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
f1e6e072 | 749 | SYMBOL_ACLASS_INDEX (s) = LOC_BLOCK; |
025bb325 | 750 | /* Type of the return value. */ |
c5aa993b | 751 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
46bf5051 | 752 | t = objfile_type (objfile)->builtin_int; |
c906108c SS |
753 | else |
754 | { | |
755 | t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name); | |
ee300cd4 AC |
756 | if (strcmp (name, "malloc") == 0 |
757 | && TYPE_CODE (t) == TYPE_CODE_VOID) | |
c906108c SS |
758 | { |
759 | /* I don't know why, but, at least under Alpha GNU/Linux, | |
c5aa993b JM |
760 | when linking against a malloc without debugging |
761 | symbols, its read as a function returning void---this | |
762 | is bad because it means we cannot call functions with | |
763 | string arguments interactively; i.e., "call | |
764 | printf("howdy\n")" would fail with the error message | |
765 | "program has no memory available". To avoid this, we | |
766 | patch up the type and make it void* | |
025bb325 | 767 | instead. (davidm@azstarnet.com). */ |
c906108c SS |
768 | t = make_pointer_type (t, NULL); |
769 | } | |
770 | } | |
771 | b = top_stack->cur_block; | |
772 | if (sh->st == stProc) | |
773 | { | |
439247b6 DE |
774 | const struct blockvector *bv |
775 | = SYMTAB_BLOCKVECTOR (top_stack->cur_st); | |
b8d56208 | 776 | |
c906108c SS |
777 | /* The next test should normally be true, but provides a |
778 | hook for nested functions (which we don't want to make | |
28397f59 | 779 | global). */ |
c906108c SS |
780 | if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) |
781 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
782 | /* Irix 5 sometimes has duplicate names for the same | |
783 | function. We want to add such names up at the global | |
784 | level, not as a nested function. */ | |
785 | else if (sh->value == top_stack->procadr) | |
786 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
787 | } | |
c7efd0b9 | 788 | add_symbol (s, top_stack->cur_st, b); |
c906108c | 789 | |
025bb325 | 790 | /* Make a type for the procedure itself. */ |
c906108c SS |
791 | SYMBOL_TYPE (s) = lookup_function_type (t); |
792 | ||
1e698235 DJ |
793 | /* All functions in C++ have prototypes. For C we don't have enough |
794 | information in the debug info. */ | |
795 | if (SYMBOL_LANGUAGE (s) == language_cplus) | |
876cecd0 | 796 | TYPE_PROTOTYPED (SYMBOL_TYPE (s)) = 1; |
1e698235 | 797 | |
025bb325 | 798 | /* Create and enter a new lexical context. */ |
5ffa0793 | 799 | b = new_block (FUNCTION_BLOCK, SYMBOL_LANGUAGE (s)); |
c906108c SS |
800 | SYMBOL_BLOCK_VALUE (s) = b; |
801 | BLOCK_FUNCTION (b) = s; | |
802 | BLOCK_START (b) = BLOCK_END (b) = sh->value; | |
803 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
804 | add_block (b, top_stack->cur_st); | |
805 | ||
025bb325 | 806 | /* Not if we only have partial info. */ |
c5aa993b | 807 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
808 | break; |
809 | ||
810 | push_parse_stack (); | |
811 | top_stack->cur_block = b; | |
812 | top_stack->blocktype = sh->st; | |
813 | top_stack->cur_type = SYMBOL_TYPE (s); | |
814 | top_stack->cur_field = -1; | |
815 | top_stack->procadr = sh->value; | |
816 | top_stack->numargs = 0; | |
817 | break; | |
818 | ||
819 | /* Beginning of code for structure, union, and enum definitions. | |
c5aa993b | 820 | They all share a common set of local variables, defined here. */ |
c906108c SS |
821 | { |
822 | enum type_code type_code; | |
823 | char *ext_tsym; | |
824 | int nfields; | |
825 | long max_value; | |
826 | struct field *f; | |
827 | ||
025bb325 | 828 | case stStruct: /* Start a block defining a struct type. */ |
c906108c SS |
829 | type_code = TYPE_CODE_STRUCT; |
830 | goto structured_common; | |
831 | ||
025bb325 | 832 | case stUnion: /* Start a block defining a union type. */ |
c906108c SS |
833 | type_code = TYPE_CODE_UNION; |
834 | goto structured_common; | |
835 | ||
025bb325 | 836 | case stEnum: /* Start a block defining an enum type. */ |
c906108c SS |
837 | type_code = TYPE_CODE_ENUM; |
838 | goto structured_common; | |
839 | ||
025bb325 | 840 | case stBlock: /* Either a lexical block, or some type. */ |
c5aa993b | 841 | if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc)) |
c906108c SS |
842 | goto case_stBlock_code; /* Lexical block */ |
843 | ||
844 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ | |
845 | ||
846 | /* Common code for handling struct, union, enum, and/or as-yet- | |
847 | unknown-type blocks of info about structured data. `type_code' | |
848 | has been set to the proper TYPE_CODE, if we know it. */ | |
849 | structured_common: | |
850 | found_ecoff_debugging_info = 1; | |
851 | push_parse_stack (); | |
852 | top_stack->blocktype = stBlock; | |
853 | ||
025bb325 | 854 | /* First count the number of fields and the highest value. */ |
c906108c SS |
855 | nfields = 0; |
856 | max_value = 0; | |
857 | for (ext_tsym = ext_sh + external_sym_size; | |
858 | ; | |
859 | ext_tsym += external_sym_size) | |
860 | { | |
861 | SYMR tsym; | |
862 | ||
863 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
864 | ||
865 | switch (tsym.st) | |
866 | { | |
867 | case stEnd: | |
f0394be6 | 868 | /* C++ encodes class types as structures where there the |
025bb325 | 869 | methods are encoded as stProc. The scope of stProc |
f0394be6 JB |
870 | symbols also ends with stEnd, thus creating a risk of |
871 | taking the wrong stEnd symbol record as the end of | |
872 | the current struct, which would cause GDB to undercount | |
873 | the real number of fields in this struct. To make sure | |
874 | we really reached the right stEnd symbol record, we | |
875 | check the associated name, and match it against the | |
876 | struct name. Since method names are mangled while | |
877 | the class name is not, there is no risk of having a | |
878 | method whose name is identical to the class name | |
879 | (in particular constructor method names are different | |
880 | from the class name). There is therefore no risk that | |
7bde8967 KB |
881 | this check stops the count on the StEnd of a method. |
882 | ||
883 | Also, assume that we're really at the end when tsym.iss | |
884 | is 0 (issNull). */ | |
885 | if (tsym.iss == issNull | |
886 | || strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss, | |
887 | name) == 0) | |
f0394be6 JB |
888 | goto end_of_fields; |
889 | break; | |
c906108c SS |
890 | |
891 | case stMember: | |
892 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
893 | { |
894 | /* If the type of the member is Nil (or Void), | |
895 | without qualifiers, assume the tag is an | |
896 | enumeration. | |
897 | Alpha cc -migrate enums are recognized by a zero | |
898 | index and a zero symbol value. | |
899 | DU 4.0 cc enums are recognized by a member type of | |
900 | btEnum without qualifiers and a zero symbol value. */ | |
901 | if (tsym.index == indexNil | |
902 | || (tsym.index == 0 && sh->value == 0)) | |
903 | type_code = TYPE_CODE_ENUM; | |
904 | else | |
905 | { | |
906 | (*debug_swap->swap_tir_in) (bigend, | |
907 | &ax[tsym.index].a_ti, | |
908 | &tir); | |
909 | if ((tir.bt == btNil || tir.bt == btVoid | |
910 | || (tir.bt == btEnum && sh->value == 0)) | |
911 | && tir.tq0 == tqNil) | |
912 | type_code = TYPE_CODE_ENUM; | |
913 | } | |
914 | } | |
c906108c SS |
915 | nfields++; |
916 | if (tsym.value > max_value) | |
917 | max_value = tsym.value; | |
918 | break; | |
919 | ||
920 | case stBlock: | |
921 | case stUnion: | |
922 | case stEnum: | |
923 | case stStruct: | |
924 | { | |
925 | #if 0 | |
926 | /* This is a no-op; is it trying to tell us something | |
927 | we should be checking? */ | |
c5aa993b | 928 | if (tsym.sc == scVariant); /*UNIMPLEMENTED */ |
c906108c SS |
929 | #endif |
930 | if (tsym.index != 0) | |
931 | { | |
932 | /* This is something like a struct within a | |
c5aa993b JM |
933 | struct. Skip over the fields of the inner |
934 | struct. The -1 is because the for loop will | |
935 | increment ext_tsym. */ | |
c906108c SS |
936 | ext_tsym = ((char *) debug_info->external_sym |
937 | + ((cur_fdr->isymBase + tsym.index - 1) | |
938 | * external_sym_size)); | |
939 | } | |
940 | } | |
941 | break; | |
942 | ||
943 | case stTypedef: | |
944 | /* mips cc puts out a typedef for struct x if it is not yet | |
945 | defined when it encounters | |
946 | struct y { struct x *xp; }; | |
025bb325 | 947 | Just ignore it. */ |
c906108c SS |
948 | break; |
949 | ||
950 | case stIndirect: | |
951 | /* Irix5 cc puts out a stIndirect for struct x if it is not | |
952 | yet defined when it encounters | |
953 | struct y { struct x *xp; }; | |
025bb325 | 954 | Just ignore it. */ |
c906108c SS |
955 | break; |
956 | ||
957 | default: | |
b98664d3 | 958 | complaint (_("declaration block contains " |
3e43a32a | 959 | "unhandled symbol type %d"), |
23136709 | 960 | tsym.st); |
c906108c SS |
961 | } |
962 | } | |
82ae4854 | 963 | end_of_fields: |
c906108c SS |
964 | |
965 | /* In an stBlock, there is no way to distinguish structs, | |
966 | unions, and enums at this point. This is a bug in the | |
967 | original design (that has been fixed with the recent | |
968 | addition of the stStruct, stUnion, and stEnum symbol | |
969 | types.) The way you can tell is if/when you see a variable | |
970 | or field of that type. In that case the variable's type | |
971 | (in the AUX table) says if the type is struct, union, or | |
972 | enum, and points back to the stBlock here. So you can | |
973 | patch the tag kind up later - but only if there actually is | |
974 | a variable or field of that type. | |
975 | ||
976 | So until we know for sure, we will guess at this point. | |
977 | The heuristic is: | |
978 | If the first member has index==indexNil or a void type, | |
979 | assume we have an enumeration. | |
980 | Otherwise, if there is more than one member, and all | |
981 | the members have offset 0, assume we have a union. | |
982 | Otherwise, assume we have a struct. | |
983 | ||
984 | The heuristic could guess wrong in the case of of an | |
985 | enumeration with no members or a union with one (or zero) | |
986 | members, or when all except the last field of a struct have | |
987 | width zero. These are uncommon and/or illegal situations, | |
988 | and in any case guessing wrong probably doesn't matter | |
989 | much. | |
990 | ||
991 | But if we later do find out we were wrong, we fixup the tag | |
992 | kind. Members of an enumeration must be handled | |
993 | differently from struct/union fields, and that is harder to | |
994 | patch up, but luckily we shouldn't need to. (If there are | |
995 | any enumeration members, we can tell for sure it's an enum | |
025bb325 | 996 | here.) */ |
c906108c SS |
997 | |
998 | if (type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
999 | { |
1000 | if (nfields > 1 && max_value == 0) | |
1001 | type_code = TYPE_CODE_UNION; | |
1002 | else | |
1003 | type_code = TYPE_CODE_STRUCT; | |
1004 | } | |
c906108c SS |
1005 | |
1006 | /* Create a new type or use the pending type. */ | |
1007 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
cafb3438 | 1008 | if (pend == NULL) |
c906108c SS |
1009 | { |
1010 | t = new_type (NULL); | |
1011 | add_pending (cur_fdr, ext_sh, t); | |
1012 | } | |
1013 | else | |
1014 | t = pend->t; | |
1015 | ||
1016 | /* Do not set the tag name if it is a compiler generated tag name | |
1017 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. | |
1018 | Alpha cc puts out an sh->iss of zero for those. */ | |
1019 | if (sh->iss == 0 || name[0] == '.' || name[0] == '\0') | |
e86ca25f | 1020 | TYPE_NAME (t) = NULL; |
c906108c | 1021 | else |
e86ca25f TT |
1022 | TYPE_NAME (t) = obconcat (&mdebugread_objfile->objfile_obstack, |
1023 | name, (char *) NULL); | |
c906108c SS |
1024 | |
1025 | TYPE_CODE (t) = type_code; | |
1026 | TYPE_LENGTH (t) = sh->value; | |
1027 | TYPE_NFIELDS (t) = nfields; | |
1028 | TYPE_FIELDS (t) = f = ((struct field *) | |
1029 | TYPE_ALLOC (t, | |
1030 | nfields * sizeof (struct field))); | |
1031 | ||
1032 | if (type_code == TYPE_CODE_ENUM) | |
1033 | { | |
1034 | int unsigned_enum = 1; | |
1035 | ||
025bb325 | 1036 | /* This is a non-empty enum. */ |
c906108c SS |
1037 | |
1038 | /* DEC c89 has the number of enumerators in the sh.value field, | |
1039 | not the type length, so we have to compensate for that | |
1040 | incompatibility quirk. | |
1041 | This might do the wrong thing for an enum with one or two | |
1042 | enumerators and gcc -gcoff -fshort-enums, but these cases | |
1043 | are hopefully rare enough. | |
1044 | Alpha cc -migrate has a sh.value field of zero, we adjust | |
1045 | that too. */ | |
1046 | if (TYPE_LENGTH (t) == TYPE_NFIELDS (t) | |
1047 | || TYPE_LENGTH (t) == 0) | |
5e2b427d | 1048 | TYPE_LENGTH (t) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
c906108c SS |
1049 | for (ext_tsym = ext_sh + external_sym_size; |
1050 | ; | |
1051 | ext_tsym += external_sym_size) | |
1052 | { | |
1053 | SYMR tsym; | |
1054 | struct symbol *enum_sym; | |
1055 | ||
1056 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
1057 | ||
1058 | if (tsym.st != stMember) | |
1059 | break; | |
1060 | ||
14e75d8e | 1061 | SET_FIELD_ENUMVAL (*f, tsym.value); |
c906108c SS |
1062 | FIELD_TYPE (*f) = t; |
1063 | FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss; | |
1064 | FIELD_BITSIZE (*f) = 0; | |
1065 | ||
e623cf5d | 1066 | enum_sym = allocate_symbol (mdebugread_objfile); |
3567439c | 1067 | SYMBOL_SET_LINKAGE_NAME |
10f0c4bb | 1068 | (enum_sym, |
224c3ddb SM |
1069 | (char *) obstack_copy0 (&mdebugread_objfile->objfile_obstack, |
1070 | f->name, strlen (f->name))); | |
f1e6e072 | 1071 | SYMBOL_ACLASS_INDEX (enum_sym) = LOC_CONST; |
c906108c | 1072 | SYMBOL_TYPE (enum_sym) = t; |
176620f1 | 1073 | SYMBOL_DOMAIN (enum_sym) = VAR_DOMAIN; |
c906108c SS |
1074 | SYMBOL_VALUE (enum_sym) = tsym.value; |
1075 | if (SYMBOL_VALUE (enum_sym) < 0) | |
1076 | unsigned_enum = 0; | |
c7efd0b9 | 1077 | add_symbol (enum_sym, top_stack->cur_st, top_stack->cur_block); |
c906108c | 1078 | |
025bb325 | 1079 | /* Skip the stMembers that we've handled. */ |
c906108c SS |
1080 | count++; |
1081 | f++; | |
1082 | } | |
1083 | if (unsigned_enum) | |
876cecd0 | 1084 | TYPE_UNSIGNED (t) = 1; |
c906108c | 1085 | } |
025bb325 | 1086 | /* Make this the current type. */ |
c906108c SS |
1087 | top_stack->cur_type = t; |
1088 | top_stack->cur_field = 0; | |
1089 | ||
1090 | /* Do not create a symbol for alpha cc unnamed structs. */ | |
1091 | if (sh->iss == 0) | |
1092 | break; | |
1093 | ||
1094 | /* gcc puts out an empty struct for an opaque struct definitions, | |
1095 | do not create a symbol for it either. */ | |
1096 | if (TYPE_NFIELDS (t) == 0) | |
1097 | { | |
876cecd0 | 1098 | TYPE_STUB (t) = 1; |
c906108c SS |
1099 | break; |
1100 | } | |
1101 | ||
1102 | s = new_symbol (name); | |
176620f1 | 1103 | SYMBOL_DOMAIN (s) = STRUCT_DOMAIN; |
f1e6e072 | 1104 | SYMBOL_ACLASS_INDEX (s) = LOC_TYPEDEF; |
c906108c SS |
1105 | SYMBOL_VALUE (s) = 0; |
1106 | SYMBOL_TYPE (s) = t; | |
c7efd0b9 | 1107 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1108 | break; |
1109 | ||
1110 | /* End of local variables shared by struct, union, enum, and | |
1111 | block (as yet unknown struct/union/enum) processing. */ | |
1112 | } | |
1113 | ||
1114 | case_stBlock_code: | |
1115 | found_ecoff_debugging_info = 1; | |
025bb325 MS |
1116 | /* Beginnning of (code) block. Value of symbol |
1117 | is the displacement from procedure start. */ | |
c906108c SS |
1118 | push_parse_stack (); |
1119 | ||
1120 | /* Do not start a new block if this is the outermost block of a | |
c5aa993b JM |
1121 | procedure. This allows the LOC_BLOCK symbol to point to the |
1122 | block with the local variables, so funcname::var works. */ | |
c906108c SS |
1123 | if (top_stack->blocktype == stProc |
1124 | || top_stack->blocktype == stStaticProc) | |
1125 | { | |
1126 | top_stack->blocktype = stNil; | |
1127 | break; | |
1128 | } | |
1129 | ||
1130 | top_stack->blocktype = stBlock; | |
5ffa0793 | 1131 | b = new_block (NON_FUNCTION_BLOCK, psymtab_language); |
c906108c SS |
1132 | BLOCK_START (b) = sh->value + top_stack->procadr; |
1133 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1134 | top_stack->cur_block = b; | |
1135 | add_block (b, top_stack->cur_st); | |
1136 | break; | |
1137 | ||
1138 | case stEnd: /* end (of anything) */ | |
c5aa993b | 1139 | if (sh->sc == scInfo || SC_IS_COMMON (sh->sc)) |
c906108c SS |
1140 | { |
1141 | /* Finished with type */ | |
1142 | top_stack->cur_type = 0; | |
1143 | } | |
1144 | else if (sh->sc == scText && | |
1145 | (top_stack->blocktype == stProc || | |
1146 | top_stack->blocktype == stStaticProc)) | |
1147 | { | |
1148 | /* Finished with procedure */ | |
439247b6 DE |
1149 | const struct blockvector *bv |
1150 | = SYMTAB_BLOCKVECTOR (top_stack->cur_st); | |
f92761ec | 1151 | struct mdebug_extra_func_info *e; |
b926417a | 1152 | struct block *cblock = top_stack->cur_block; |
c906108c SS |
1153 | struct type *ftype = top_stack->cur_type; |
1154 | int i; | |
1155 | ||
1156 | BLOCK_END (top_stack->cur_block) += sh->value; /* size */ | |
1157 | ||
025bb325 | 1158 | /* Make up special symbol to contain procedure specific info. */ |
f92761ec | 1159 | s = new_symbol (MDEBUG_EFI_SYMBOL_NAME); |
176620f1 | 1160 | SYMBOL_DOMAIN (s) = LABEL_DOMAIN; |
f1e6e072 | 1161 | SYMBOL_ACLASS_INDEX (s) = LOC_CONST; |
dd707e8e | 1162 | SYMBOL_TYPE (s) = objfile_type (mdebugread_objfile)->builtin_void; |
e39db4db SM |
1163 | e = OBSTACK_ZALLOC (&mdebugread_objfile->objfile_obstack, |
1164 | mdebug_extra_func_info); | |
9918cab9 | 1165 | SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e; |
c906108c SS |
1166 | e->numargs = top_stack->numargs; |
1167 | e->pdr.framereg = -1; | |
c7efd0b9 | 1168 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c | 1169 | |
c906108c SS |
1170 | /* f77 emits proc-level with address bounds==[0,0], |
1171 | So look for such child blocks, and patch them. */ | |
1172 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
1173 | { | |
1174 | struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i); | |
b8d56208 | 1175 | |
b926417a | 1176 | if (BLOCK_SUPERBLOCK (b_bad) == cblock |
c906108c SS |
1177 | && BLOCK_START (b_bad) == top_stack->procadr |
1178 | && BLOCK_END (b_bad) == top_stack->procadr) | |
1179 | { | |
b926417a TT |
1180 | BLOCK_START (b_bad) = BLOCK_START (cblock); |
1181 | BLOCK_END (b_bad) = BLOCK_END (cblock); | |
c906108c SS |
1182 | } |
1183 | } | |
1184 | ||
1185 | if (TYPE_NFIELDS (ftype) <= 0) | |
1186 | { | |
1187 | /* No parameter type information is recorded with the function's | |
025bb325 | 1188 | type. Set that from the type of the parameter symbols. */ |
c906108c SS |
1189 | int nparams = top_stack->numargs; |
1190 | int iparams; | |
1191 | struct symbol *sym; | |
1192 | ||
1193 | if (nparams > 0) | |
1194 | { | |
8157b174 | 1195 | struct block_iterator iter; |
b8d56208 | 1196 | |
c906108c SS |
1197 | TYPE_NFIELDS (ftype) = nparams; |
1198 | TYPE_FIELDS (ftype) = (struct field *) | |
1199 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
c5aa993b | 1200 | |
de4f826b | 1201 | iparams = 0; |
b926417a | 1202 | ALL_BLOCK_SYMBOLS (cblock, iter, sym) |
c906108c | 1203 | { |
de4f826b DC |
1204 | if (iparams == nparams) |
1205 | break; | |
1206 | ||
2a2d4dc3 | 1207 | if (SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1208 | { |
c906108c | 1209 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); |
8176bb6d | 1210 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c | 1211 | iparams++; |
c906108c SS |
1212 | } |
1213 | } | |
1214 | } | |
1215 | } | |
1216 | } | |
1217 | else if (sh->sc == scText && top_stack->blocktype == stBlock) | |
1218 | { | |
025bb325 | 1219 | /* End of (code) block. The value of the symbol is the |
c906108c | 1220 | displacement from the procedure`s start address of the |
025bb325 | 1221 | end of this block. */ |
c906108c | 1222 | BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr; |
c906108c SS |
1223 | } |
1224 | else if (sh->sc == scText && top_stack->blocktype == stNil) | |
1225 | { | |
1226 | /* End of outermost block. Pop parse stack and ignore. The | |
1227 | following stEnd of stProc will take care of the block. */ | |
1228 | ; | |
1229 | } | |
1230 | else if (sh->sc == scText && top_stack->blocktype == stFile) | |
1231 | { | |
1232 | /* End of file. Pop parse stack and ignore. Higher | |
1233 | level code deals with this. */ | |
1234 | ; | |
1235 | } | |
1236 | else | |
b98664d3 | 1237 | complaint (_("stEnd with storage class %d not handled"), sh->sc); |
c906108c | 1238 | |
025bb325 | 1239 | pop_parse_stack (); /* Restore previous lexical context. */ |
c906108c SS |
1240 | break; |
1241 | ||
1242 | case stMember: /* member of struct or union */ | |
b926417a TT |
1243 | { |
1244 | struct field *f | |
1245 | = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++]; | |
1246 | FIELD_NAME (*f) = name; | |
1247 | SET_FIELD_BITPOS (*f, sh->value); | |
1248 | bitsize = 0; | |
1249 | FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, | |
1250 | &bitsize, bigend, name); | |
1251 | FIELD_BITSIZE (*f) = bitsize; | |
1252 | } | |
c906108c SS |
1253 | break; |
1254 | ||
1255 | case stIndirect: /* forward declaration on Irix5 */ | |
1256 | /* Forward declarations from Irix5 cc are handled by cross_ref, | |
c5aa993b | 1257 | skip them. */ |
c906108c SS |
1258 | break; |
1259 | ||
1260 | case stTypedef: /* type definition */ | |
1261 | found_ecoff_debugging_info = 1; | |
1262 | ||
1263 | /* Typedefs for forward declarations and opaque structs from alpha cc | |
c5aa993b | 1264 | are handled by cross_ref, skip them. */ |
c906108c SS |
1265 | if (sh->iss == 0) |
1266 | break; | |
1267 | ||
1268 | /* Parse the type or use the pending type. */ | |
1269 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
cafb3438 | 1270 | if (pend == NULL) |
c906108c | 1271 | { |
cafb3438 | 1272 | t = parse_type (cur_fd, ax, sh->index, NULL, bigend, name); |
c906108c SS |
1273 | add_pending (cur_fdr, ext_sh, t); |
1274 | } | |
1275 | else | |
1276 | t = pend->t; | |
1277 | ||
025bb325 MS |
1278 | /* Mips cc puts out a typedef with the name of the struct for forward |
1279 | declarations. These should not go into the symbol table and | |
c5aa993b JM |
1280 | TYPE_NAME should not be set for them. |
1281 | They can't be distinguished from an intentional typedef to | |
1282 | the same name however: | |
1283 | x.h: | |
1284 | struct x { int ix; int jx; }; | |
1285 | struct xx; | |
1286 | x.c: | |
1287 | typedef struct x x; | |
1288 | struct xx {int ixx; int jxx; }; | |
1289 | generates a cross referencing stTypedef for x and xx. | |
1290 | The user visible effect of this is that the type of a pointer | |
1291 | to struct foo sometimes is given as `foo *' instead of `struct foo *'. | |
1292 | The problem is fixed with alpha cc and Irix5 cc. */ | |
c906108c SS |
1293 | |
1294 | /* However if the typedef cross references to an opaque aggregate, it | |
c5aa993b | 1295 | is safe to omit it from the symbol table. */ |
c906108c SS |
1296 | |
1297 | if (has_opaque_xref (cur_fdr, sh)) | |
1298 | break; | |
1299 | s = new_symbol (name); | |
176620f1 | 1300 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
f1e6e072 | 1301 | SYMBOL_ACLASS_INDEX (s) = LOC_TYPEDEF; |
c906108c SS |
1302 | SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block; |
1303 | SYMBOL_TYPE (s) = t; | |
c7efd0b9 | 1304 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1305 | |
1306 | /* Incomplete definitions of structs should not get a name. */ | |
1307 | if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL | |
1308 | && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0 | |
c5aa993b | 1309 | || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT |
c906108c SS |
1310 | && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION))) |
1311 | { | |
1312 | if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR | |
1313 | || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC) | |
1314 | { | |
1315 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1316 | foo" or "function returning foo", we better not set |
1317 | the TYPE_NAME. If the program contains "typedef char | |
1318 | *caddr_t;", we don't want all variables of type char | |
1319 | * to print as caddr_t. This is not just a | |
1320 | consequence of GDB's type management; CC and GCC (at | |
1321 | least through version 2.4) both output variables of | |
1322 | either type char * or caddr_t with the type | |
1323 | refering to the stTypedef symbol for caddr_t. If a future | |
1324 | compiler cleans this up it GDB is not ready for it | |
1325 | yet, but if it becomes ready we somehow need to | |
1326 | disable this check (without breaking the PCC/GCC2.4 | |
1327 | case). | |
1328 | ||
1329 | Sigh. | |
1330 | ||
1331 | Fortunately, this check seems not to be necessary | |
1332 | for anything except pointers or functions. */ | |
c906108c SS |
1333 | } |
1334 | else | |
3567439c | 1335 | TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_LINKAGE_NAME (s); |
c906108c SS |
1336 | } |
1337 | break; | |
1338 | ||
1339 | case stFile: /* file name */ | |
1340 | push_parse_stack (); | |
1341 | top_stack->blocktype = sh->st; | |
1342 | break; | |
1343 | ||
1344 | /* I`ve never seen these for C */ | |
1345 | case stRegReloc: | |
1346 | break; /* register relocation */ | |
1347 | case stForward: | |
1348 | break; /* forwarding address */ | |
1349 | case stConstant: | |
1350 | break; /* constant */ | |
1351 | default: | |
b98664d3 | 1352 | complaint (_("unknown symbol type 0x%x"), sh->st); |
c906108c SS |
1353 | break; |
1354 | } | |
1355 | ||
1356 | return count; | |
1357 | } | |
1358 | ||
0a9d309a UW |
1359 | /* Basic types. */ |
1360 | ||
91d3055d TT |
1361 | static const struct objfile_key<struct type *, |
1362 | gdb::noop_deleter<struct type *>> | |
1363 | basic_type_data; | |
0a9d309a UW |
1364 | |
1365 | static struct type * | |
1366 | basic_type (int bt, struct objfile *objfile) | |
1367 | { | |
1368 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
91d3055d | 1369 | struct type **map_bt = basic_type_data.get (objfile); |
0a9d309a UW |
1370 | struct type *tp; |
1371 | ||
1372 | if (bt >= btMax) | |
1373 | return NULL; | |
1374 | ||
1375 | if (!map_bt) | |
1376 | { | |
1377 | map_bt = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
1378 | btMax, struct type *); | |
91d3055d | 1379 | basic_type_data.set (objfile, map_bt); |
0a9d309a UW |
1380 | } |
1381 | ||
1382 | if (map_bt[bt]) | |
1383 | return map_bt[bt]; | |
1384 | ||
1385 | switch (bt) | |
1386 | { | |
1387 | case btNil: | |
46bf5051 | 1388 | tp = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1389 | break; |
1390 | ||
1391 | case btAdr: | |
19f392bc UW |
1392 | tp = init_pointer_type (objfile, 32, "adr_32", |
1393 | objfile_type (objfile)->builtin_void); | |
0a9d309a UW |
1394 | break; |
1395 | ||
1396 | case btChar: | |
19f392bc | 1397 | tp = init_integer_type (objfile, 8, 0, "char"); |
c413c448 | 1398 | TYPE_NOSIGN (tp) = 1; |
0a9d309a UW |
1399 | break; |
1400 | ||
1401 | case btUChar: | |
19f392bc | 1402 | tp = init_integer_type (objfile, 8, 1, "unsigned char"); |
0a9d309a UW |
1403 | break; |
1404 | ||
1405 | case btShort: | |
19f392bc | 1406 | tp = init_integer_type (objfile, 16, 0, "short"); |
0a9d309a UW |
1407 | break; |
1408 | ||
1409 | case btUShort: | |
19f392bc | 1410 | tp = init_integer_type (objfile, 16, 1, "unsigned short"); |
0a9d309a UW |
1411 | break; |
1412 | ||
1413 | case btInt: | |
19f392bc | 1414 | tp = init_integer_type (objfile, 32, 0, "int"); |
0a9d309a UW |
1415 | break; |
1416 | ||
1417 | case btUInt: | |
19f392bc | 1418 | tp = init_integer_type (objfile, 32, 1, "unsigned int"); |
0a9d309a UW |
1419 | break; |
1420 | ||
1421 | case btLong: | |
19f392bc | 1422 | tp = init_integer_type (objfile, 32, 0, "long"); |
0a9d309a UW |
1423 | break; |
1424 | ||
1425 | case btULong: | |
19f392bc | 1426 | tp = init_integer_type (objfile, 32, 1, "unsigned long"); |
0a9d309a UW |
1427 | break; |
1428 | ||
1429 | case btFloat: | |
19f392bc | 1430 | tp = init_float_type (objfile, gdbarch_float_bit (gdbarch), |
49f190bc | 1431 | "float", gdbarch_float_format (gdbarch)); |
0a9d309a UW |
1432 | break; |
1433 | ||
1434 | case btDouble: | |
19f392bc | 1435 | tp = init_float_type (objfile, gdbarch_double_bit (gdbarch), |
49f190bc | 1436 | "double", gdbarch_double_format (gdbarch)); |
0a9d309a UW |
1437 | break; |
1438 | ||
1439 | case btComplex: | |
19f392bc UW |
1440 | tp = init_complex_type (objfile, "complex", |
1441 | basic_type (btFloat, objfile)); | |
0a9d309a UW |
1442 | break; |
1443 | ||
1444 | case btDComplex: | |
19f392bc UW |
1445 | tp = init_complex_type (objfile, "double complex", |
1446 | basic_type (btFloat, objfile)); | |
0a9d309a UW |
1447 | break; |
1448 | ||
1449 | case btFixedDec: | |
1450 | /* We use TYPE_CODE_INT to print these as integers. Does this do any | |
1451 | good? Would we be better off with TYPE_CODE_ERROR? Should | |
1452 | TYPE_CODE_ERROR print things in hex if it knows the size? */ | |
19f392bc UW |
1453 | tp = init_integer_type (objfile, gdbarch_int_bit (gdbarch), 0, |
1454 | "fixed decimal"); | |
0a9d309a UW |
1455 | break; |
1456 | ||
1457 | case btFloatDec: | |
19f392bc | 1458 | tp = init_type (objfile, TYPE_CODE_ERROR, |
77b7c781 | 1459 | gdbarch_double_bit (gdbarch), "floating decimal"); |
0a9d309a UW |
1460 | break; |
1461 | ||
1462 | case btString: | |
1463 | /* Is a "string" the way btString means it the same as TYPE_CODE_STRING? | |
1464 | FIXME. */ | |
77b7c781 | 1465 | tp = init_type (objfile, TYPE_CODE_STRING, TARGET_CHAR_BIT, "string"); |
0a9d309a UW |
1466 | break; |
1467 | ||
1468 | case btVoid: | |
46bf5051 | 1469 | tp = objfile_type (objfile)->builtin_void; |
0a9d309a UW |
1470 | break; |
1471 | ||
1472 | case btLong64: | |
19f392bc | 1473 | tp = init_integer_type (objfile, 64, 0, "long"); |
0a9d309a UW |
1474 | break; |
1475 | ||
1476 | case btULong64: | |
19f392bc | 1477 | tp = init_integer_type (objfile, 64, 1, "unsigned long"); |
0a9d309a UW |
1478 | break; |
1479 | ||
1480 | case btLongLong64: | |
19f392bc | 1481 | tp = init_integer_type (objfile, 64, 0, "long long"); |
0a9d309a UW |
1482 | break; |
1483 | ||
1484 | case btULongLong64: | |
19f392bc | 1485 | tp = init_integer_type (objfile, 64, 1, "unsigned long long"); |
0a9d309a UW |
1486 | break; |
1487 | ||
1488 | case btAdr64: | |
19f392bc UW |
1489 | tp = init_pointer_type (objfile, 64, "adr_64", |
1490 | objfile_type (objfile)->builtin_void); | |
0a9d309a UW |
1491 | break; |
1492 | ||
1493 | case btInt64: | |
19f392bc | 1494 | tp = init_integer_type (objfile, 64, 0, "int"); |
0a9d309a UW |
1495 | break; |
1496 | ||
1497 | case btUInt64: | |
19f392bc | 1498 | tp = init_integer_type (objfile, 64, 1, "unsigned int"); |
0a9d309a UW |
1499 | break; |
1500 | ||
1501 | default: | |
1502 | tp = NULL; | |
1503 | break; | |
1504 | } | |
1505 | ||
1506 | map_bt[bt] = tp; | |
1507 | return tp; | |
1508 | } | |
1509 | ||
c906108c | 1510 | /* Parse the type information provided in the raw AX entries for |
025bb325 | 1511 | the symbol SH. Return the bitfield size in BS, in case. |
c906108c SS |
1512 | We must byte-swap the AX entries before we use them; BIGEND says whether |
1513 | they are big-endian or little-endian (from fh->fBigendian). */ | |
1514 | ||
1515 | static struct type * | |
fba45db2 | 1516 | parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs, |
a121b7c1 | 1517 | int bigend, const char *sym_name) |
c906108c | 1518 | { |
c906108c SS |
1519 | TIR t[1]; |
1520 | struct type *tp = 0; | |
1521 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1522 | ||
025bb325 | 1523 | /* Handle undefined types, they have indexNil. */ |
c906108c | 1524 | if (aux_index == indexNil) |
dd707e8e | 1525 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1526 | |
1527 | /* Handle corrupt aux indices. */ | |
1528 | if (aux_index >= (debug_info->fdr + fd)->caux) | |
1529 | { | |
23136709 | 1530 | index_complaint (sym_name); |
dd707e8e | 1531 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1532 | } |
1533 | ax += aux_index; | |
1534 | ||
1535 | /* Use aux as a type information record, map its basic type. */ | |
1536 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
dd707e8e | 1537 | tp = basic_type (t->bt, mdebugread_objfile); |
0a9d309a | 1538 | if (tp == NULL) |
c906108c | 1539 | { |
025bb325 | 1540 | /* Cannot use builtin types -- build our own. */ |
c906108c SS |
1541 | switch (t->bt) |
1542 | { | |
1543 | case btStruct: | |
1544 | type_code = TYPE_CODE_STRUCT; | |
1545 | break; | |
1546 | case btUnion: | |
1547 | type_code = TYPE_CODE_UNION; | |
1548 | break; | |
1549 | case btEnum: | |
1550 | type_code = TYPE_CODE_ENUM; | |
1551 | break; | |
1552 | case btRange: | |
1553 | type_code = TYPE_CODE_RANGE; | |
1554 | break; | |
1555 | case btSet: | |
1556 | type_code = TYPE_CODE_SET; | |
1557 | break; | |
1558 | case btIndirect: | |
025bb325 | 1559 | /* alpha cc -migrate uses this for typedefs. The true type will |
c906108c SS |
1560 | be obtained by crossreferencing below. */ |
1561 | type_code = TYPE_CODE_ERROR; | |
1562 | break; | |
1563 | case btTypedef: | |
025bb325 | 1564 | /* alpha cc uses this for typedefs. The true type will be |
c906108c SS |
1565 | obtained by crossreferencing below. */ |
1566 | type_code = TYPE_CODE_ERROR; | |
1567 | break; | |
1568 | default: | |
23136709 | 1569 | basic_type_complaint (t->bt, sym_name); |
dd707e8e | 1570 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1571 | } |
1572 | } | |
1573 | ||
025bb325 | 1574 | /* Move on to next aux. */ |
c906108c SS |
1575 | ax++; |
1576 | ||
1577 | if (t->fBitfield) | |
1578 | { | |
1579 | int width = AUX_GET_WIDTH (bigend, ax); | |
b8d56208 | 1580 | |
25caa7a8 | 1581 | /* Inhibit core dumps if TIR is corrupted. */ |
cafb3438 | 1582 | if (bs == NULL) |
c906108c SS |
1583 | { |
1584 | /* Alpha cc -migrate encodes char and unsigned char types | |
1585 | as short and unsigned short types with a field width of 8. | |
1586 | Enum types also have a field width which we ignore for now. */ | |
1587 | if (t->bt == btShort && width == 8) | |
dd707e8e | 1588 | tp = basic_type (btChar, mdebugread_objfile); |
c906108c | 1589 | else if (t->bt == btUShort && width == 8) |
dd707e8e | 1590 | tp = basic_type (btUChar, mdebugread_objfile); |
c906108c SS |
1591 | else if (t->bt == btEnum) |
1592 | ; | |
1593 | else | |
b98664d3 | 1594 | complaint (_("can't handle TIR fBitfield for %s"), |
23136709 | 1595 | sym_name); |
c906108c SS |
1596 | } |
1597 | else | |
c5aa993b | 1598 | *bs = width; |
c906108c SS |
1599 | ax++; |
1600 | } | |
1601 | ||
1602 | /* A btIndirect entry cross references to an aux entry containing | |
1603 | the type. */ | |
1604 | if (t->bt == btIndirect) | |
1605 | { | |
1606 | RNDXR rn[1]; | |
1607 | int rf; | |
1608 | FDR *xref_fh; | |
1609 | int xref_fd; | |
1610 | ||
1611 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
1612 | ax++; | |
1613 | if (rn->rfd == 0xfff) | |
1614 | { | |
1615 | rf = AUX_GET_ISYM (bigend, ax); | |
1616 | ax++; | |
1617 | } | |
1618 | else | |
1619 | rf = rn->rfd; | |
1620 | ||
1621 | if (rf == -1) | |
1622 | { | |
b98664d3 | 1623 | complaint (_("unable to cross ref btIndirect for %s"), sym_name); |
dd707e8e | 1624 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1625 | } |
1626 | xref_fh = get_rfd (fd, rf); | |
1627 | xref_fd = xref_fh - debug_info->fdr; | |
1628 | tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase, | |
cafb3438 | 1629 | rn->index, NULL, xref_fh->fBigendian, sym_name); |
c906108c SS |
1630 | } |
1631 | ||
1632 | /* All these types really point to some (common) MIPS type | |
1633 | definition, and only the type-qualifiers fully identify | |
025bb325 | 1634 | them. We'll make the same effort at sharing. */ |
c906108c SS |
1635 | if (t->bt == btStruct || |
1636 | t->bt == btUnion || | |
1637 | t->bt == btEnum || | |
1638 | ||
c5aa993b JM |
1639 | /* btSet (I think) implies that the name is a tag name, not a typedef |
1640 | name. This apparently is a MIPS extension for C sets. */ | |
c906108c SS |
1641 | t->bt == btSet) |
1642 | { | |
a121b7c1 | 1643 | const char *name; |
c906108c SS |
1644 | |
1645 | /* Try to cross reference this type, build new type on failure. */ | |
1646 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
cafb3438 | 1647 | if (tp == NULL) |
19f392bc | 1648 | tp = init_type (mdebugread_objfile, type_code, 0, NULL); |
c906108c SS |
1649 | |
1650 | /* DEC c89 produces cross references to qualified aggregate types, | |
c5aa993b | 1651 | dereference them. */ |
c906108c SS |
1652 | while (TYPE_CODE (tp) == TYPE_CODE_PTR |
1653 | || TYPE_CODE (tp) == TYPE_CODE_ARRAY) | |
0004e5a2 | 1654 | tp = TYPE_TARGET_TYPE (tp); |
c906108c SS |
1655 | |
1656 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1657 | Any type may be returned from cross_ref if file indirect entries |
1658 | are corrupted. */ | |
c906108c SS |
1659 | if (TYPE_CODE (tp) != TYPE_CODE_STRUCT |
1660 | && TYPE_CODE (tp) != TYPE_CODE_UNION | |
1661 | && TYPE_CODE (tp) != TYPE_CODE_ENUM) | |
1662 | { | |
23136709 | 1663 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1664 | } |
1665 | else | |
1666 | { | |
c906108c SS |
1667 | /* Usually, TYPE_CODE(tp) is already type_code. The main |
1668 | exception is if we guessed wrong re struct/union/enum. | |
1669 | But for struct vs. union a wrong guess is harmless, so | |
1670 | don't complain(). */ | |
1671 | if ((TYPE_CODE (tp) == TYPE_CODE_ENUM | |
1672 | && type_code != TYPE_CODE_ENUM) | |
1673 | || (TYPE_CODE (tp) != TYPE_CODE_ENUM | |
1674 | && type_code == TYPE_CODE_ENUM)) | |
1675 | { | |
23136709 | 1676 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1677 | } |
1678 | ||
1679 | if (TYPE_CODE (tp) != type_code) | |
1680 | { | |
1681 | TYPE_CODE (tp) = type_code; | |
1682 | } | |
1683 | ||
1684 | /* Do not set the tag name if it is a compiler generated tag name | |
c5aa993b | 1685 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ |
c906108c | 1686 | if (name[0] == '.' || name[0] == '\0') |
e86ca25f TT |
1687 | TYPE_NAME (tp) = NULL; |
1688 | else if (TYPE_NAME (tp) == NULL | |
1689 | || strcmp (TYPE_NAME (tp), name) != 0) | |
1690 | TYPE_NAME (tp) | |
224c3ddb SM |
1691 | = ((const char *) |
1692 | obstack_copy0 (&mdebugread_objfile->objfile_obstack, | |
1693 | name, strlen (name))); | |
c906108c SS |
1694 | } |
1695 | } | |
1696 | ||
1697 | /* All these types really point to some (common) MIPS type | |
1698 | definition, and only the type-qualifiers fully identify | |
1699 | them. We'll make the same effort at sharing. | |
1700 | FIXME: We are not doing any guessing on range types. */ | |
1701 | if (t->bt == btRange) | |
1702 | { | |
a121b7c1 | 1703 | const char *name; |
c906108c SS |
1704 | |
1705 | /* Try to cross reference this type, build new type on failure. */ | |
1706 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
cafb3438 | 1707 | if (tp == NULL) |
19f392bc | 1708 | tp = init_type (mdebugread_objfile, type_code, 0, NULL); |
c906108c SS |
1709 | |
1710 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1711 | Any type may be returned from cross_ref if file indirect entries |
1712 | are corrupted. */ | |
c906108c SS |
1713 | if (TYPE_CODE (tp) != TYPE_CODE_RANGE) |
1714 | { | |
23136709 | 1715 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1716 | } |
1717 | else | |
1718 | { | |
1719 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
025bb325 | 1720 | exception is if we guessed wrong re struct/union/enum. */ |
c906108c SS |
1721 | if (TYPE_CODE (tp) != type_code) |
1722 | { | |
23136709 | 1723 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1724 | TYPE_CODE (tp) = type_code; |
1725 | } | |
ee300cd4 AC |
1726 | if (TYPE_NAME (tp) == NULL |
1727 | || strcmp (TYPE_NAME (tp), name) != 0) | |
10f0c4bb | 1728 | TYPE_NAME (tp) |
224c3ddb SM |
1729 | = ((const char *) |
1730 | obstack_copy0 (&mdebugread_objfile->objfile_obstack, | |
1731 | name, strlen (name))); | |
c906108c SS |
1732 | } |
1733 | } | |
1734 | if (t->bt == btTypedef) | |
1735 | { | |
a121b7c1 | 1736 | const char *name; |
c906108c SS |
1737 | |
1738 | /* Try to cross reference this type, it should succeed. */ | |
1739 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
cafb3438 | 1740 | if (tp == NULL) |
c906108c | 1741 | { |
b98664d3 | 1742 | complaint (_("unable to cross ref btTypedef for %s"), sym_name); |
dd707e8e | 1743 | tp = basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1744 | } |
1745 | } | |
1746 | ||
025bb325 | 1747 | /* Deal with range types. */ |
c906108c SS |
1748 | if (t->bt == btRange) |
1749 | { | |
43bbcdc2 PH |
1750 | TYPE_NFIELDS (tp) = 0; |
1751 | TYPE_RANGE_DATA (tp) = ((struct range_bounds *) | |
1752 | TYPE_ZALLOC (tp, sizeof (struct range_bounds))); | |
262452ec | 1753 | TYPE_LOW_BOUND (tp) = AUX_GET_DNLOW (bigend, ax); |
c906108c | 1754 | ax++; |
262452ec | 1755 | TYPE_HIGH_BOUND (tp) = AUX_GET_DNHIGH (bigend, ax); |
c906108c SS |
1756 | ax++; |
1757 | } | |
1758 | ||
025bb325 MS |
1759 | /* Parse all the type qualifiers now. If there are more |
1760 | than 6 the game will continue in the next aux. */ | |
c906108c SS |
1761 | |
1762 | while (1) | |
1763 | { | |
1764 | #define PARSE_TQ(tq) \ | |
1765 | if (t->tq != tqNil) \ | |
1766 | ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \ | |
1767 | else \ | |
1768 | break; | |
1769 | ||
1770 | PARSE_TQ (tq0); | |
1771 | PARSE_TQ (tq1); | |
1772 | PARSE_TQ (tq2); | |
1773 | PARSE_TQ (tq3); | |
1774 | PARSE_TQ (tq4); | |
1775 | PARSE_TQ (tq5); | |
1776 | #undef PARSE_TQ | |
1777 | ||
1778 | /* mips cc 2.x and gcc never put out continued aux entries. */ | |
1779 | if (!t->continued) | |
1780 | break; | |
1781 | ||
1782 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1783 | ax++; | |
1784 | } | |
1785 | ||
1786 | /* Complain for illegal continuations due to corrupt aux entries. */ | |
1787 | if (t->continued) | |
b98664d3 | 1788 | complaint (_("illegal TIR continued for %s"), sym_name); |
c5aa993b | 1789 | |
c906108c SS |
1790 | return tp; |
1791 | } | |
1792 | ||
1793 | /* Make up a complex type from a basic one. Type is passed by | |
025bb325 | 1794 | reference in TPP and side-effected as necessary. The type |
c906108c SS |
1795 | qualifier TQ says how to handle the aux symbols at AX for |
1796 | the symbol SX we are currently analyzing. BIGEND says whether | |
1797 | aux symbols are big-endian or little-endian. | |
025bb325 | 1798 | Returns the number of aux symbols we parsed. */ |
c906108c SS |
1799 | |
1800 | static int | |
fba45db2 | 1801 | upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend, |
a121b7c1 | 1802 | const char *sym_name) |
c906108c SS |
1803 | { |
1804 | int off; | |
1805 | struct type *t; | |
1806 | ||
025bb325 | 1807 | /* Used in array processing. */ |
c906108c SS |
1808 | int rf, id; |
1809 | FDR *fh; | |
1810 | struct type *range; | |
1811 | struct type *indx; | |
1812 | int lower, upper; | |
1813 | RNDXR rndx; | |
1814 | ||
1815 | switch (tq) | |
1816 | { | |
1817 | case tqPtr: | |
1818 | t = lookup_pointer_type (*tpp); | |
1819 | *tpp = t; | |
1820 | return 0; | |
1821 | ||
1822 | case tqProc: | |
1823 | t = lookup_function_type (*tpp); | |
1824 | *tpp = t; | |
1825 | return 0; | |
1826 | ||
1827 | case tqArray: | |
1828 | off = 0; | |
1829 | ||
025bb325 | 1830 | /* Determine and record the domain type (type of index). */ |
c906108c SS |
1831 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx); |
1832 | id = rndx.index; | |
1833 | rf = rndx.rfd; | |
1834 | if (rf == 0xfff) | |
1835 | { | |
1836 | ax++; | |
1837 | rf = AUX_GET_ISYM (bigend, ax); | |
1838 | off++; | |
1839 | } | |
1840 | fh = get_rfd (fd, rf); | |
1841 | ||
1842 | indx = parse_type (fh - debug_info->fdr, | |
1843 | debug_info->external_aux + fh->iauxBase, | |
cafb3438 | 1844 | id, NULL, bigend, sym_name); |
c906108c SS |
1845 | |
1846 | /* The bounds type should be an integer type, but might be anything | |
c5aa993b | 1847 | else due to corrupt aux entries. */ |
c906108c SS |
1848 | if (TYPE_CODE (indx) != TYPE_CODE_INT) |
1849 | { | |
b98664d3 | 1850 | complaint (_("illegal array index type for %s, assuming int"), |
3e43a32a | 1851 | sym_name); |
dd707e8e | 1852 | indx = objfile_type (mdebugread_objfile)->builtin_int; |
c906108c SS |
1853 | } |
1854 | ||
1855 | /* Get the bounds, and create the array type. */ | |
1856 | ax++; | |
1857 | lower = AUX_GET_DNLOW (bigend, ax); | |
1858 | ax++; | |
1859 | upper = AUX_GET_DNHIGH (bigend, ax); | |
1860 | ax++; | |
1861 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ | |
1862 | ||
cafb3438 | 1863 | range = create_static_range_type (NULL, indx, lower, upper); |
c906108c | 1864 | |
cafb3438 | 1865 | t = create_array_type (NULL, *tpp, range); |
c906108c SS |
1866 | |
1867 | /* We used to fill in the supplied array element bitsize | |
c5aa993b JM |
1868 | here if the TYPE_LENGTH of the target type was zero. |
1869 | This happens for a `pointer to an array of anonymous structs', | |
1870 | but in this case the array element bitsize is also zero, | |
1871 | so nothing is gained. | |
1872 | And we used to check the TYPE_LENGTH of the target type against | |
1873 | the supplied array element bitsize. | |
1874 | gcc causes a mismatch for `pointer to array of object', | |
1875 | since the sdb directives it uses do not have a way of | |
1876 | specifying the bitsize, but it does no harm (the | |
1877 | TYPE_LENGTH should be correct) and we should be able to | |
1878 | ignore the erroneous bitsize from the auxiliary entry safely. | |
1879 | dbx seems to ignore it too. */ | |
c906108c | 1880 | |
d6a843b5 | 1881 | /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */ |
c906108c | 1882 | if (TYPE_LENGTH (*tpp) == 0) |
d6a843b5 | 1883 | TYPE_TARGET_STUB (t) = 1; |
c906108c SS |
1884 | |
1885 | *tpp = t; | |
1886 | return 4 + off; | |
1887 | ||
1888 | case tqVol: | |
1889 | /* Volatile -- currently ignored */ | |
1890 | return 0; | |
1891 | ||
1892 | case tqConst: | |
1893 | /* Const -- currently ignored */ | |
1894 | return 0; | |
1895 | ||
1896 | default: | |
b98664d3 | 1897 | complaint (_("unknown type qualifier 0x%x"), tq); |
c906108c SS |
1898 | return 0; |
1899 | } | |
1900 | } | |
1901 | ||
1902 | ||
1903 | /* Parse a procedure descriptor record PR. Note that the procedure is | |
1904 | parsed _after_ the local symbols, now we just insert the extra | |
f92761ec | 1905 | information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has |
c906108c SS |
1906 | already been placed in the procedure's main block. Note also that |
1907 | images that have been partially stripped (ld -x) have been deprived | |
1908 | of local symbols, and we have to cope with them here. FIRST_OFF is | |
1909 | the offset of the first procedure for this FDR; we adjust the | |
1910 | address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab | |
f92761ec | 1911 | to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol |
c906108c SS |
1912 | in question, or NULL to use top_stack->cur_block. */ |
1913 | ||
c906108c | 1914 | static void |
43f3e411 | 1915 | parse_procedure (PDR *pr, struct compunit_symtab *search_symtab, |
fba45db2 | 1916 | struct partial_symtab *pst) |
c906108c SS |
1917 | { |
1918 | struct symbol *s, *i; | |
3977b71f | 1919 | const struct block *b; |
c906108c SS |
1920 | char *sh_name; |
1921 | ||
025bb325 | 1922 | /* Simple rule to find files linked "-x". */ |
c906108c SS |
1923 | if (cur_fdr->rss == -1) |
1924 | { | |
1925 | if (pr->isym == -1) | |
1926 | { | |
025bb325 | 1927 | /* Static procedure at address pr->adr. Sigh. */ |
c906108c | 1928 | /* FIXME-32x64. assuming pr->adr fits in long. */ |
b98664d3 | 1929 | complaint (_("can't handle PDR for static proc at 0x%lx"), |
23136709 | 1930 | (unsigned long) pr->adr); |
c906108c SS |
1931 | return; |
1932 | } | |
1933 | else | |
1934 | { | |
1935 | /* external */ | |
1936 | EXTR she; | |
c5aa993b | 1937 | |
c906108c SS |
1938 | (*debug_swap->swap_ext_in) (cur_bfd, |
1939 | ((char *) debug_info->external_ext | |
1940 | + (pr->isym | |
1941 | * debug_swap->external_ext_size)), | |
1942 | &she); | |
1943 | sh_name = debug_info->ssext + she.asym.iss; | |
1944 | } | |
1945 | } | |
1946 | else | |
1947 | { | |
1948 | /* Full symbols */ | |
1949 | SYMR sh; | |
1950 | ||
1951 | (*debug_swap->swap_sym_in) (cur_bfd, | |
1952 | ((char *) debug_info->external_sym | |
1953 | + ((cur_fdr->isymBase + pr->isym) | |
1954 | * debug_swap->external_sym_size)), | |
1955 | &sh); | |
1956 | sh_name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
1957 | } | |
1958 | ||
1959 | if (search_symtab != NULL) | |
1960 | { | |
1961 | #if 0 | |
1962 | /* This loses both in the case mentioned (want a static, find a global), | |
c5aa993b JM |
1963 | but also if we are looking up a non-mangled name which happens to |
1964 | match the name of a mangled function. */ | |
c906108c | 1965 | /* We have to save the cur_fdr across the call to lookup_symbol. |
c5aa993b JM |
1966 | If the pdr is for a static function and if a global function with |
1967 | the same name exists, lookup_symbol will eventually read in the symtab | |
1968 | for the global function and clobber cur_fdr. */ | |
c906108c | 1969 | FDR *save_cur_fdr = cur_fdr; |
b8d56208 | 1970 | |
2570f2b7 | 1971 | s = lookup_symbol (sh_name, NULL, VAR_DOMAIN, 0); |
c906108c SS |
1972 | cur_fdr = save_cur_fdr; |
1973 | #else | |
1974 | s = mylookup_symbol | |
1975 | (sh_name, | |
43f3e411 DE |
1976 | BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (search_symtab), |
1977 | STATIC_BLOCK), | |
176620f1 | 1978 | VAR_DOMAIN, |
c906108c SS |
1979 | LOC_BLOCK); |
1980 | #endif | |
1981 | } | |
1982 | else | |
1983 | s = mylookup_symbol (sh_name, top_stack->cur_block, | |
176620f1 | 1984 | VAR_DOMAIN, LOC_BLOCK); |
c906108c SS |
1985 | |
1986 | if (s != 0) | |
1987 | { | |
1988 | b = SYMBOL_BLOCK_VALUE (s); | |
1989 | } | |
1990 | else | |
1991 | { | |
b98664d3 | 1992 | complaint (_("PDR for %s, but no symbol"), sh_name); |
c906108c SS |
1993 | #if 1 |
1994 | return; | |
1995 | #else | |
1996 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ | |
1997 | s = new_symbol (sh_name); | |
176620f1 | 1998 | SYMBOL_DOMAIN (s) = VAR_DOMAIN; |
c906108c | 1999 | SYMBOL_CLASS (s) = LOC_BLOCK; |
025bb325 | 2000 | /* Donno its type, hope int is ok. */ |
0a9d309a | 2001 | SYMBOL_TYPE (s) |
46bf5051 | 2002 | = lookup_function_type (objfile_type (pst->objfile)->builtin_int); |
c7efd0b9 | 2003 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
025bb325 | 2004 | /* Won't have symbols for this one. */ |
c906108c SS |
2005 | b = new_block (2); |
2006 | SYMBOL_BLOCK_VALUE (s) = b; | |
2007 | BLOCK_FUNCTION (b) = s; | |
2008 | BLOCK_START (b) = pr->adr; | |
2009 | /* BOUND used to be the end of procedure's text, but the | |
c5aa993b | 2010 | argument is no longer passed in. */ |
c906108c SS |
2011 | BLOCK_END (b) = bound; |
2012 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
2013 | add_block (b, top_stack->cur_st); | |
2014 | #endif | |
2015 | } | |
2016 | ||
f92761ec | 2017 | i = mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME, b, LABEL_DOMAIN, LOC_CONST); |
c906108c SS |
2018 | |
2019 | if (i) | |
2020 | { | |
9918cab9 JB |
2021 | struct mdebug_extra_func_info *e; |
2022 | ||
2023 | e = (struct mdebug_extra_func_info *) SYMBOL_VALUE_BYTES (i); | |
c906108c | 2024 | e->pdr = *pr; |
c906108c SS |
2025 | |
2026 | /* GDB expects the absolute function start address for the | |
c5aa993b JM |
2027 | procedure descriptor in e->pdr.adr. |
2028 | As the address in the procedure descriptor is usually relative, | |
2029 | we would have to relocate e->pdr.adr with cur_fdr->adr and | |
b8fbeb18 | 2030 | ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)). |
c5aa993b JM |
2031 | Unfortunately cur_fdr->adr and e->pdr.adr are both absolute |
2032 | in shared libraries on some systems, and on other systems | |
2033 | e->pdr.adr is sometimes offset by a bogus value. | |
2034 | To work around these problems, we replace e->pdr.adr with | |
2035 | the start address of the function. */ | |
c906108c | 2036 | e->pdr.adr = BLOCK_START (b); |
c906108c SS |
2037 | } |
2038 | ||
2039 | /* It would be reasonable that functions that have been compiled | |
2040 | without debugging info have a btNil type for their return value, | |
2041 | and functions that are void and are compiled with debugging info | |
2042 | have btVoid. | |
2043 | gcc and DEC f77 put out btNil types for both cases, so btNil is mapped | |
2044 | to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info' | |
2045 | case right. | |
2046 | The glevel field in cur_fdr could be used to determine the presence | |
2047 | of debugging info, but GCC doesn't always pass the -g switch settings | |
2048 | to the assembler and GAS doesn't set the glevel field from the -g switch | |
2049 | settings. | |
2050 | To work around these problems, the return value type of a TYPE_CODE_VOID | |
2051 | function is adjusted accordingly if no debugging info was found in the | |
2052 | compilation unit. */ | |
c5aa993b | 2053 | |
c906108c SS |
2054 | if (processing_gcc_compilation == 0 |
2055 | && found_ecoff_debugging_info == 0 | |
2056 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID) | |
5c80ed9d | 2057 | SYMBOL_TYPE (s) = objfile_type (mdebugread_objfile)->nodebug_text_symbol; |
c906108c SS |
2058 | } |
2059 | ||
025bb325 | 2060 | /* Parse the external symbol ES. Just call parse_symbol() after |
c906108c SS |
2061 | making sure we know where the aux are for it. |
2062 | BIGEND says whether aux entries are big-endian or little-endian. | |
2063 | ||
025bb325 | 2064 | This routine clobbers top_stack->cur_block and ->cur_st. */ |
c906108c | 2065 | |
a14ed312 KB |
2066 | static void parse_external (EXTR *, int, struct section_offsets *, |
2067 | struct objfile *); | |
c906108c SS |
2068 | |
2069 | static void | |
fba45db2 KB |
2070 | parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets, |
2071 | struct objfile *objfile) | |
c906108c SS |
2072 | { |
2073 | union aux_ext *ax; | |
2074 | ||
2075 | if (es->ifd != ifdNil) | |
2076 | { | |
2077 | cur_fd = es->ifd; | |
2078 | cur_fdr = debug_info->fdr + cur_fd; | |
2079 | ax = debug_info->external_aux + cur_fdr->iauxBase; | |
2080 | } | |
2081 | else | |
2082 | { | |
2083 | cur_fdr = debug_info->fdr; | |
2084 | ax = 0; | |
2085 | } | |
2086 | ||
2087 | /* Reading .o files */ | |
c5aa993b | 2088 | if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil) |
c906108c | 2089 | { |
a121b7c1 | 2090 | const char *what; |
c906108c SS |
2091 | switch (es->asym.st) |
2092 | { | |
2093 | case stNil: | |
2094 | /* These are generated for static symbols in .o files, | |
2095 | ignore them. */ | |
2096 | return; | |
2097 | case stStaticProc: | |
2098 | case stProc: | |
2099 | what = "procedure"; | |
2100 | n_undef_procs++; | |
2101 | break; | |
2102 | case stGlobal: | |
2103 | what = "variable"; | |
2104 | n_undef_vars++; | |
2105 | break; | |
2106 | case stLabel: | |
2107 | what = "label"; | |
2108 | n_undef_labels++; | |
2109 | break; | |
2110 | default: | |
2111 | what = "symbol"; | |
2112 | break; | |
2113 | } | |
2114 | n_undef_symbols++; | |
025bb325 | 2115 | /* FIXME: Turn this into a complaint? */ |
c906108c | 2116 | if (info_verbose) |
a3f17187 | 2117 | printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"), |
c906108c SS |
2118 | what, debug_info->ssext + es->asym.iss, |
2119 | fdr_name (cur_fdr)); | |
2120 | return; | |
2121 | } | |
2122 | ||
2123 | switch (es->asym.st) | |
2124 | { | |
2125 | case stProc: | |
2126 | case stStaticProc: | |
2127 | /* There is no need to parse the external procedure symbols. | |
c5aa993b JM |
2128 | If they are from objects compiled without -g, their index will |
2129 | be indexNil, and the symbol definition from the minimal symbol | |
2130 | is preferrable (yielding a function returning int instead of int). | |
2131 | If the index points to a local procedure symbol, the local | |
2132 | symbol already provides the correct type. | |
2133 | Note that the index of the external procedure symbol points | |
2134 | to the local procedure symbol in the local symbol table, and | |
2135 | _not_ to the auxiliary symbol info. */ | |
c906108c SS |
2136 | break; |
2137 | case stGlobal: | |
2138 | case stLabel: | |
2139 | /* Global common symbols are resolved by the runtime loader, | |
c5aa993b JM |
2140 | ignore them. */ |
2141 | if (SC_IS_COMMON (es->asym.sc)) | |
c906108c SS |
2142 | break; |
2143 | ||
2144 | /* Note that the case of a symbol with indexNil must be handled | |
c5aa993b | 2145 | anyways by parse_symbol(). */ |
cafb3438 | 2146 | parse_symbol (&es->asym, ax, NULL, |
3e43a32a | 2147 | bigend, section_offsets, objfile); |
c906108c SS |
2148 | break; |
2149 | default: | |
2150 | break; | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | /* Parse the line number info for file descriptor FH into | |
2155 | GDB's linetable LT. MIPS' encoding requires a little bit | |
2156 | of magic to get things out. Note also that MIPS' line | |
2157 | numbers can go back and forth, apparently we can live | |
025bb325 | 2158 | with that and do not need to reorder our linetables. */ |
c906108c | 2159 | |
c906108c | 2160 | static void |
fba45db2 | 2161 | parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines, |
79748972 | 2162 | CORE_ADDR textlow, CORE_ADDR lowest_pdr_addr) |
c906108c SS |
2163 | { |
2164 | unsigned char *base; | |
2165 | int j, k; | |
2166 | int delta, count, lineno = 0; | |
2167 | ||
2168 | if (fh->cbLine == 0) | |
2169 | return; | |
2170 | ||
025bb325 | 2171 | /* Scan by procedure descriptors. */ |
c906108c SS |
2172 | k = 0; |
2173 | for (j = 0; j < fh->cpd; j++, pr++) | |
2174 | { | |
2175 | CORE_ADDR l; | |
2176 | CORE_ADDR adr; | |
2177 | unsigned char *halt; | |
2178 | ||
025bb325 | 2179 | /* No code for this one. */ |
c906108c SS |
2180 | if (pr->iline == ilineNil || |
2181 | pr->lnLow == -1 || pr->lnHigh == -1) | |
2182 | continue; | |
2183 | ||
2184 | /* Determine start and end address of compressed line bytes for | |
c5aa993b | 2185 | this procedure. */ |
c906108c SS |
2186 | base = debug_info->line + fh->cbLineOffset; |
2187 | if (j != (fh->cpd - 1)) | |
c5aa993b | 2188 | halt = base + pr[1].cbLineOffset; |
c906108c | 2189 | else |
c5aa993b | 2190 | halt = base + fh->cbLine; |
c906108c SS |
2191 | base += pr->cbLineOffset; |
2192 | ||
79748972 | 2193 | adr = textlow + pr->adr - lowest_pdr_addr; |
c906108c SS |
2194 | |
2195 | l = adr >> 2; /* in words */ | |
c5aa993b | 2196 | for (lineno = pr->lnLow; base < halt;) |
c906108c SS |
2197 | { |
2198 | count = *base & 0x0f; | |
2199 | delta = *base++ >> 4; | |
2200 | if (delta >= 8) | |
2201 | delta -= 16; | |
2202 | if (delta == -8) | |
2203 | { | |
2204 | delta = (base[0] << 8) | base[1]; | |
2205 | if (delta >= 0x8000) | |
2206 | delta -= 0x10000; | |
2207 | base += 2; | |
2208 | } | |
2209 | lineno += delta; /* first delta is 0 */ | |
2210 | ||
025bb325 | 2211 | /* Complain if the line table overflows. Could happen |
c906108c SS |
2212 | with corrupt binaries. */ |
2213 | if (lt->nitems >= maxlines) | |
2214 | { | |
b98664d3 | 2215 | complaint (_("guessed size of linetable for %s incorrectly"), |
23136709 | 2216 | fdr_name (fh)); |
c906108c SS |
2217 | break; |
2218 | } | |
2219 | k = add_line (lt, lineno, l, k); | |
2220 | l += count + 1; | |
2221 | } | |
2222 | } | |
2223 | } | |
2224 | \f | |
23136709 KB |
2225 | static void |
2226 | function_outside_compilation_unit_complaint (const char *arg1) | |
2227 | { | |
b98664d3 | 2228 | complaint (_("function `%s' appears to be defined " |
3e43a32a | 2229 | "outside of all compilation units"), |
23136709 KB |
2230 | arg1); |
2231 | } | |
2232 | ||
1f9872de JB |
2233 | /* Use the STORAGE_CLASS to compute which section the given symbol |
2234 | belongs to, and then records this new minimal symbol. */ | |
2235 | ||
2236 | static void | |
8dddcb8f TT |
2237 | record_minimal_symbol (minimal_symbol_reader &reader, |
2238 | const char *name, const CORE_ADDR address, | |
1f9872de JB |
2239 | enum minimal_symbol_type ms_type, int storage_class, |
2240 | struct objfile *objfile) | |
2241 | { | |
2242 | int section; | |
1f9872de JB |
2243 | |
2244 | switch (storage_class) | |
2245 | { | |
2246 | case scText: | |
2247 | section = SECT_OFF_TEXT (objfile); | |
1f9872de JB |
2248 | break; |
2249 | case scData: | |
2250 | section = SECT_OFF_DATA (objfile); | |
1f9872de JB |
2251 | break; |
2252 | case scBss: | |
2253 | section = SECT_OFF_BSS (objfile); | |
1f9872de JB |
2254 | break; |
2255 | case scSData: | |
2256 | section = get_section_index (objfile, ".sdata"); | |
1f9872de JB |
2257 | break; |
2258 | case scSBss: | |
2259 | section = get_section_index (objfile, ".sbss"); | |
1f9872de JB |
2260 | break; |
2261 | case scRData: | |
2262 | section = get_section_index (objfile, ".rdata"); | |
1f9872de JB |
2263 | break; |
2264 | case scInit: | |
2265 | section = get_section_index (objfile, ".init"); | |
1f9872de JB |
2266 | break; |
2267 | case scXData: | |
2268 | section = get_section_index (objfile, ".xdata"); | |
1f9872de JB |
2269 | break; |
2270 | case scPData: | |
2271 | section = get_section_index (objfile, ".pdata"); | |
1f9872de JB |
2272 | break; |
2273 | case scFini: | |
2274 | section = get_section_index (objfile, ".fini"); | |
1f9872de JB |
2275 | break; |
2276 | case scRConst: | |
2277 | section = get_section_index (objfile, ".rconst"); | |
1f9872de JB |
2278 | break; |
2279 | #ifdef scTlsData | |
2280 | case scTlsData: | |
2281 | section = get_section_index (objfile, ".tlsdata"); | |
1f9872de JB |
2282 | break; |
2283 | #endif | |
2284 | #ifdef scTlsBss | |
2285 | case scTlsBss: | |
2286 | section = get_section_index (objfile, ".tlsbss"); | |
1f9872de JB |
2287 | break; |
2288 | #endif | |
2289 | default: | |
2290 | /* This kind of symbol is not associated to a section. */ | |
2291 | section = -1; | |
1f9872de JB |
2292 | } |
2293 | ||
8dddcb8f | 2294 | reader.record_with_info (name, address, ms_type, section); |
1f9872de JB |
2295 | } |
2296 | ||
c906108c SS |
2297 | /* Master parsing procedure for first-pass reading of file symbols |
2298 | into a partial_symtab. */ | |
2299 | ||
2300 | static void | |
8dddcb8f TT |
2301 | parse_partial_symbols (minimal_symbol_reader &reader, |
2302 | struct objfile *objfile) | |
c906108c | 2303 | { |
5e2b427d | 2304 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
2305 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; |
2306 | const bfd_size_type external_rfd_size = debug_swap->external_rfd_size; | |
2307 | const bfd_size_type external_ext_size = debug_swap->external_ext_size; | |
12b9c64f AO |
2308 | void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in; |
2309 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; | |
2310 | void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in; | |
c906108c SS |
2311 | int f_idx, s_idx; |
2312 | HDRR *hdr = &debug_info->symbolic_header; | |
2313 | /* Running pointers */ | |
2314 | FDR *fh; | |
2315 | char *ext_out; | |
2316 | char *ext_out_end; | |
52f0bd74 | 2317 | EXTR *ext_in; |
c906108c SS |
2318 | EXTR *ext_in_end; |
2319 | SYMR sh; | |
2320 | struct partial_symtab *pst; | |
2321 | int textlow_not_set = 1; | |
c906108c | 2322 | |
025bb325 | 2323 | /* List of current psymtab's include files. */ |
0d5cff50 | 2324 | const char **psymtab_include_list; |
c906108c SS |
2325 | int includes_allocated; |
2326 | int includes_used; | |
2327 | EXTR *extern_tab; | |
2328 | struct pst_map *fdr_to_pst; | |
025bb325 | 2329 | /* Index within current psymtab dependency list. */ |
c906108c SS |
2330 | struct partial_symtab **dependency_list; |
2331 | int dependencies_used, dependencies_allocated; | |
c906108c SS |
2332 | char *name; |
2333 | enum language prev_language; | |
2334 | asection *text_sect; | |
2335 | int relocatable = 0; | |
2336 | ||
2337 | /* Irix 5.2 shared libraries have a fh->adr field of zero, but | |
2338 | the shared libraries are prelinked at a high memory address. | |
2339 | We have to adjust the start address of the object file for this case, | |
2340 | by setting it to the start address of the first procedure in the file. | |
2341 | But we should do no adjustments if we are debugging a .o file, where | |
2342 | the text section (and fh->adr) really starts at zero. */ | |
2343 | text_sect = bfd_get_section_by_name (cur_bfd, ".text"); | |
2344 | if (text_sect != NULL | |
2345 | && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC)) | |
2346 | relocatable = 1; | |
2347 | ||
e39db4db | 2348 | extern_tab = XOBNEWVEC (&objfile->objfile_obstack, EXTR, hdr->iextMax); |
c906108c SS |
2349 | |
2350 | includes_allocated = 30; | |
2351 | includes_used = 0; | |
0d5cff50 DE |
2352 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2353 | sizeof (const char *)); | |
c906108c SS |
2354 | next_symbol_text_func = mdebug_next_symbol_text; |
2355 | ||
2356 | dependencies_allocated = 30; | |
2357 | dependencies_used = 0; | |
2358 | dependency_list = | |
2359 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2360 | sizeof (struct partial_symtab *)); | |
2361 | ||
46212e0b | 2362 | set_last_source_file (NULL); |
c906108c SS |
2363 | |
2364 | /* | |
2365 | * Big plan: | |
2366 | * | |
2367 | * Only parse the Local and External symbols, and the Relative FDR. | |
2368 | * Fixup enough of the loader symtab to be able to use it. | |
2369 | * Allocate space only for the file's portions we need to | |
025bb325 | 2370 | * look at. (XXX) |
c906108c SS |
2371 | */ |
2372 | ||
2373 | max_gdbinfo = 0; | |
2374 | max_glevel = MIN_GLEVEL; | |
2375 | ||
2376 | /* Allocate the map FDR -> PST. | |
2377 | Minor hack: -O3 images might claim some global data belongs | |
025bb325 | 2378 | to FDR -1. We`ll go along with that. */ |
633cf254 TT |
2379 | gdb::def_vector<struct pst_map> fdr_to_pst_holder (hdr->ifdMax + 1); |
2380 | fdr_to_pst = fdr_to_pst_holder.data (); | |
c906108c SS |
2381 | fdr_to_pst++; |
2382 | { | |
b926417a | 2383 | struct partial_symtab *new_pst = new_psymtab ("", objfile); |
b8d56208 | 2384 | |
b926417a TT |
2385 | fdr_to_pst[-1].pst = new_pst; |
2386 | FDR_IDX (new_pst) = -1; | |
c906108c SS |
2387 | } |
2388 | ||
2389 | /* Allocate the global pending list. */ | |
e39db4db SM |
2390 | pending_list = XOBNEWVEC (&objfile->objfile_obstack, mdebug_pending *, |
2391 | hdr->ifdMax); | |
12b9c64f | 2392 | memset (pending_list, 0, |
c906108c SS |
2393 | hdr->ifdMax * sizeof (struct mdebug_pending *)); |
2394 | ||
2395 | /* Pass 0 over external syms: swap them in. */ | |
633cf254 | 2396 | gdb::def_vector<EXTR> ext_block (hdr->iextMax); |
c906108c SS |
2397 | |
2398 | ext_out = (char *) debug_info->external_ext; | |
2399 | ext_out_end = ext_out + hdr->iextMax * external_ext_size; | |
633cf254 | 2400 | ext_in = ext_block.data (); |
c906108c SS |
2401 | for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) |
2402 | (*swap_ext_in) (cur_bfd, ext_out, ext_in); | |
2403 | ||
025bb325 | 2404 | /* Pass 1 over external syms: Presize and partition the list. */ |
633cf254 | 2405 | ext_in = ext_block.data (); |
c906108c SS |
2406 | ext_in_end = ext_in + hdr->iextMax; |
2407 | for (; ext_in < ext_in_end; ext_in++) | |
2408 | { | |
2409 | /* See calls to complain below. */ | |
2410 | if (ext_in->ifd >= -1 | |
2411 | && ext_in->ifd < hdr->ifdMax | |
2412 | && ext_in->asym.iss >= 0 | |
2413 | && ext_in->asym.iss < hdr->issExtMax) | |
2414 | fdr_to_pst[ext_in->ifd].n_globals++; | |
2415 | } | |
2416 | ||
025bb325 | 2417 | /* Pass 1.5 over files: partition out global symbol space. */ |
c906108c SS |
2418 | s_idx = 0; |
2419 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) | |
2420 | { | |
2421 | fdr_to_pst[f_idx].globals_offset = s_idx; | |
2422 | s_idx += fdr_to_pst[f_idx].n_globals; | |
2423 | fdr_to_pst[f_idx].n_globals = 0; | |
2424 | } | |
2425 | ||
2426 | /* ECOFF in ELF: | |
2427 | ||
2428 | For ECOFF in ELF, we skip the creation of the minimal symbols. | |
2429 | The ECOFF symbols should be a subset of the Elf symbols, and the | |
2430 | section information of the elf symbols will be more accurate. | |
2431 | FIXME! What about Irix 5's native linker? | |
2432 | ||
2433 | By default, Elf sections which don't exist in ECOFF | |
2434 | get put in ECOFF's absolute section by the gnu linker. | |
2435 | Since absolute sections don't get relocated, we | |
2436 | end up calculating an address different from that of | |
2437 | the symbol's minimal symbol (created earlier from the | |
025bb325 | 2438 | Elf symtab). |
c906108c SS |
2439 | |
2440 | To fix this, either : | |
2441 | 1) don't create the duplicate symbol | |
c5aa993b JM |
2442 | (assumes ECOFF symtab is a subset of the ELF symtab; |
2443 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2444 | 2) create it, only if lookup for existing symbol in ELF's minimal |
c5aa993b JM |
2445 | symbols fails |
2446 | (inefficient; | |
2447 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2448 | 3) create it, but lookup ELF's minimal symbol and use it's section |
c5aa993b JM |
2449 | during relocation, then modify "uniqify" phase to merge and |
2450 | eliminate the duplicate symbol | |
2451 | (highly inefficient) | |
c906108c SS |
2452 | |
2453 | I've implemented #1 here... | |
2454 | Skip the creation of the minimal symbols based on the ECOFF | |
025bb325 | 2455 | symbol table. */ |
c906108c | 2456 | |
025bb325 | 2457 | /* Pass 2 over external syms: fill in external symbols. */ |
633cf254 | 2458 | ext_in = ext_block.data (); |
c5aa993b JM |
2459 | ext_in_end = ext_in + hdr->iextMax; |
2460 | for (; ext_in < ext_in_end; ext_in++) | |
2461 | { | |
2462 | enum minimal_symbol_type ms_type = mst_text; | |
2463 | CORE_ADDR svalue = ext_in->asym.value; | |
c906108c | 2464 | |
c5aa993b JM |
2465 | /* The Irix 5 native tools seem to sometimes generate bogus |
2466 | external symbols. */ | |
2467 | if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax) | |
2468 | { | |
b98664d3 | 2469 | complaint (_("bad ifd for external symbol: %d (max %ld)"), |
3e43a32a | 2470 | ext_in->ifd, hdr->ifdMax); |
c5aa993b JM |
2471 | continue; |
2472 | } | |
2473 | if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax) | |
2474 | { | |
b98664d3 | 2475 | complaint (_("bad iss for external symbol: %ld (max %ld)"), |
23136709 | 2476 | ext_in->asym.iss, hdr->issExtMax); |
c5aa993b JM |
2477 | continue; |
2478 | } | |
c906108c | 2479 | |
c5aa993b JM |
2480 | extern_tab[fdr_to_pst[ext_in->ifd].globals_offset |
2481 | + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; | |
c906108c SS |
2482 | |
2483 | ||
c5aa993b JM |
2484 | if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil) |
2485 | continue; | |
c906108c | 2486 | |
c906108c | 2487 | |
025bb325 | 2488 | /* Pass 3 over files, over local syms: fill in static symbols. */ |
c5aa993b JM |
2489 | name = debug_info->ssext + ext_in->asym.iss; |
2490 | ||
025bb325 | 2491 | /* Process ECOFF Symbol Types and Storage Classes. */ |
c5aa993b JM |
2492 | switch (ext_in->asym.st) |
2493 | { | |
2494 | case stProc: | |
2495 | /* Beginnning of Procedure */ | |
c5aa993b JM |
2496 | break; |
2497 | case stStaticProc: | |
2498 | /* Load time only static procs */ | |
2499 | ms_type = mst_file_text; | |
c5aa993b JM |
2500 | break; |
2501 | case stGlobal: | |
2502 | /* External symbol */ | |
2503 | if (SC_IS_COMMON (ext_in->asym.sc)) | |
2504 | { | |
2505 | /* The value of a common symbol is its size, not its address. | |
2506 | Ignore it. */ | |
c906108c | 2507 | continue; |
c5aa993b JM |
2508 | } |
2509 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2510 | { | |
2511 | ms_type = mst_data; | |
c5aa993b JM |
2512 | } |
2513 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2514 | { | |
2515 | ms_type = mst_bss; | |
c5aa993b | 2516 | } |
0e931cf0 JB |
2517 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2518 | { | |
2519 | ms_type = mst_bss; | |
0e931cf0 | 2520 | } |
c5aa993b JM |
2521 | else |
2522 | ms_type = mst_abs; | |
2523 | break; | |
2524 | case stLabel: | |
2525 | /* Label */ | |
0e931cf0 JB |
2526 | |
2527 | /* On certain platforms, some extra label symbols can be | |
025bb325 | 2528 | generated by the linker. One possible usage for this kind |
0e931cf0 | 2529 | of symbols is to represent the address of the begining of a |
025bb325 | 2530 | given section. For instance, on Tru64 5.1, the address of |
0e931cf0 JB |
2531 | the _ftext label is the start address of the .text section. |
2532 | ||
2533 | The storage class of these symbols is usually directly | |
025bb325 | 2534 | related to the section to which the symbol refers. For |
0e931cf0 JB |
2535 | instance, on Tru64 5.1, the storage class for the _fdata |
2536 | label is scData, refering to the .data section. | |
2537 | ||
2538 | It is actually possible that the section associated to the | |
025bb325 | 2539 | storage class of the label does not exist. On True64 5.1 |
0e931cf0 JB |
2540 | for instance, the libm.so shared library does not contain |
2541 | any .data section, although it contains a _fpdata label | |
025bb325 | 2542 | which storage class is scData... Since these symbols are |
0e931cf0 | 2543 | usually useless for the debugger user anyway, we just |
025bb325 | 2544 | discard these symbols. */ |
0e931cf0 | 2545 | |
c5aa993b JM |
2546 | if (SC_IS_TEXT (ext_in->asym.sc)) |
2547 | { | |
0e931cf0 JB |
2548 | if (objfile->sect_index_text == -1) |
2549 | continue; | |
2550 | ||
c5aa993b | 2551 | ms_type = mst_file_text; |
c5aa993b JM |
2552 | } |
2553 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2554 | { | |
0e931cf0 JB |
2555 | if (objfile->sect_index_data == -1) |
2556 | continue; | |
2557 | ||
c5aa993b | 2558 | ms_type = mst_file_data; |
c5aa993b JM |
2559 | } |
2560 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2561 | { | |
0e931cf0 JB |
2562 | if (objfile->sect_index_bss == -1) |
2563 | continue; | |
2564 | ||
c5aa993b | 2565 | ms_type = mst_file_bss; |
c5aa993b | 2566 | } |
0e931cf0 JB |
2567 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2568 | { | |
2569 | const int sbss_sect_index = get_section_index (objfile, ".sbss"); | |
2570 | ||
2571 | if (sbss_sect_index == -1) | |
2572 | continue; | |
2573 | ||
2574 | ms_type = mst_file_bss; | |
0e931cf0 | 2575 | } |
c5aa993b JM |
2576 | else |
2577 | ms_type = mst_abs; | |
2578 | break; | |
2579 | case stLocal: | |
2580 | case stNil: | |
2581 | /* The alpha has the section start addresses in stLocal symbols | |
025bb325 | 2582 | whose name starts with a `.'. Skip those but complain for all |
c5aa993b JM |
2583 | other stLocal symbols. |
2584 | Irix6 puts the section start addresses in stNil symbols, skip | |
025bb325 | 2585 | those too. */ |
c5aa993b JM |
2586 | if (name[0] == '.') |
2587 | continue; | |
2588 | /* Fall through. */ | |
2589 | default: | |
2590 | ms_type = mst_unknown; | |
23136709 | 2591 | unknown_ext_complaint (name); |
c5aa993b JM |
2592 | } |
2593 | if (!ECOFF_IN_ELF (cur_bfd)) | |
8dddcb8f | 2594 | record_minimal_symbol (reader, name, svalue, ms_type, ext_in->asym.sc, |
1f9872de | 2595 | objfile); |
c5aa993b | 2596 | } |
c906108c | 2597 | |
025bb325 | 2598 | /* Pass 3 over files, over local syms: fill in static symbols. */ |
c906108c SS |
2599 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) |
2600 | { | |
2601 | struct partial_symtab *save_pst; | |
2602 | EXTR *ext_ptr; | |
2603 | CORE_ADDR textlow; | |
2604 | ||
2605 | cur_fdr = fh = debug_info->fdr + f_idx; | |
2606 | ||
2607 | if (fh->csym == 0) | |
2608 | { | |
2609 | fdr_to_pst[f_idx].pst = NULL; | |
2610 | continue; | |
2611 | } | |
2612 | ||
2613 | /* Determine the start address for this object file from the | |
c5aa993b | 2614 | file header and relocate it, except for Irix 5.2 zero fh->adr. */ |
c906108c | 2615 | if (fh->cpd) |
79748972 | 2616 | textlow = fh->adr; |
c906108c SS |
2617 | else |
2618 | textlow = 0; | |
18a94d75 | 2619 | pst = start_psymtab_common (objfile, |
c906108c | 2620 | fdr_name (fh), |
939652a5 | 2621 | textlow); |
e39db4db | 2622 | pst->read_symtab_private = XOBNEW (&objfile->objfile_obstack, symloc); |
12b9c64f | 2623 | memset (pst->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
2624 | |
2625 | save_pst = pst; | |
2626 | FDR_IDX (pst) = f_idx; | |
2627 | CUR_BFD (pst) = cur_bfd; | |
2628 | DEBUG_SWAP (pst) = debug_swap; | |
2629 | DEBUG_INFO (pst) = debug_info; | |
2630 | PENDING_LIST (pst) = pending_list; | |
2631 | ||
025bb325 | 2632 | /* The way to turn this into a symtab is to call... */ |
257e7a09 | 2633 | pst->read_symtab = mdebug_read_symtab; |
c906108c SS |
2634 | |
2635 | /* Set up language for the pst. | |
2636 | The language from the FDR is used if it is unambigious (e.g. cfront | |
c5aa993b JM |
2637 | with native cc and g++ will set the language to C). |
2638 | Otherwise we have to deduce the language from the filename. | |
2639 | Native ecoff has every header file in a separate FDR, so | |
2640 | deduce_language_from_filename will return language_unknown for | |
2641 | a header file, which is not what we want. | |
2642 | But the FDRs for the header files are after the FDR for the source | |
2643 | file, so we can assign the language of the source file to the | |
025bb325 | 2644 | following header files. Then we save the language in the private |
c5aa993b | 2645 | pst data so that we can reuse it when building symtabs. */ |
c906108c SS |
2646 | prev_language = psymtab_language; |
2647 | ||
2648 | switch (fh->lang) | |
2649 | { | |
2650 | case langCplusplusV2: | |
2651 | psymtab_language = language_cplus; | |
2652 | break; | |
2653 | default: | |
2654 | psymtab_language = deduce_language_from_filename (fdr_name (fh)); | |
2655 | break; | |
2656 | } | |
2657 | if (psymtab_language == language_unknown) | |
2658 | psymtab_language = prev_language; | |
2659 | PST_PRIVATE (pst)->pst_language = psymtab_language; | |
2660 | ||
79748972 | 2661 | pst->set_text_high (pst->raw_text_low ()); |
c906108c SS |
2662 | |
2663 | /* For stabs-in-ecoff files, the second symbol must be @stab. | |
c5aa993b JM |
2664 | This symbol is emitted by mips-tfile to signal that the |
2665 | current object file uses encapsulated stabs instead of mips | |
2666 | ecoff for local symbols. (It is the second symbol because | |
2667 | the first symbol is the stFile used to signal the start of a | |
025bb325 | 2668 | file). */ |
c906108c SS |
2669 | processing_gcc_compilation = 0; |
2670 | if (fh->csym >= 2) | |
2671 | { | |
2672 | (*swap_sym_in) (cur_bfd, | |
2673 | ((char *) debug_info->external_sym | |
2674 | + (fh->isymBase + 1) * external_sym_size), | |
2675 | &sh); | |
ee300cd4 AC |
2676 | if (strcmp (debug_info->ss + fh->issBase + sh.iss, |
2677 | stabs_symbol) == 0) | |
c906108c SS |
2678 | processing_gcc_compilation = 2; |
2679 | } | |
2680 | ||
2681 | if (processing_gcc_compilation != 0) | |
2682 | { | |
2683 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
2684 | { | |
2685 | int type_code; | |
0d5cff50 | 2686 | const char *namestring; |
c906108c SS |
2687 | |
2688 | (*swap_sym_in) (cur_bfd, | |
2689 | (((char *) debug_info->external_sym) | |
c5aa993b | 2690 | + (fh->isymBase + cur_sdx) * external_sym_size), |
c906108c SS |
2691 | &sh); |
2692 | type_code = ECOFF_UNMARK_STAB (sh.index); | |
2693 | if (!ECOFF_IS_STAB (&sh)) | |
2694 | { | |
2695 | if (sh.st == stProc || sh.st == stStaticProc) | |
2696 | { | |
2697 | CORE_ADDR procaddr; | |
2698 | long isym; | |
c5aa993b | 2699 | |
c906108c SS |
2700 | if (sh.st == stStaticProc) |
2701 | { | |
2702 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
8dddcb8f | 2703 | record_minimal_symbol (reader, namestring, sh.value, |
1f9872de JB |
2704 | mst_file_text, sh.sc, |
2705 | objfile); | |
c906108c SS |
2706 | } |
2707 | procaddr = sh.value; | |
2708 | ||
2709 | isym = AUX_GET_ISYM (fh->fBigendian, | |
2710 | (debug_info->external_aux | |
2711 | + fh->iauxBase | |
2712 | + sh.index)); | |
2713 | (*swap_sym_in) (cur_bfd, | |
2714 | ((char *) debug_info->external_sym | |
2715 | + ((fh->isymBase + isym - 1) | |
2716 | * external_sym_size)), | |
2717 | &sh); | |
2718 | if (sh.st == stEnd) | |
2719 | { | |
2720 | CORE_ADDR high = procaddr + sh.value; | |
2721 | ||
c5aa993b | 2722 | /* Kludge for Irix 5.2 zero fh->adr. */ |
c906108c | 2723 | if (!relocatable |
52948f01 | 2724 | && (!pst->text_low_valid |
79748972 | 2725 | || procaddr < pst->raw_text_low ())) |
4ae976d1 | 2726 | pst->set_text_low (procaddr); |
79748972 | 2727 | if (high > pst->raw_text_high ()) |
4ae976d1 | 2728 | pst->set_text_high (high); |
c906108c SS |
2729 | } |
2730 | } | |
2731 | else if (sh.st == stStatic) | |
2732 | { | |
2733 | switch (sh.sc) | |
2734 | { | |
2735 | case scUndefined: | |
2736 | case scSUndefined: | |
2737 | case scNil: | |
2738 | case scAbs: | |
2739 | break; | |
2740 | ||
2741 | case scData: | |
2742 | case scSData: | |
2743 | case scRData: | |
2744 | case scPData: | |
2745 | case scXData: | |
2746 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
8dddcb8f | 2747 | record_minimal_symbol (reader, namestring, sh.value, |
1f9872de JB |
2748 | mst_file_data, sh.sc, |
2749 | objfile); | |
c906108c SS |
2750 | break; |
2751 | ||
2752 | default: | |
2753 | /* FIXME! Shouldn't this use cases for bss, | |
025bb325 | 2754 | then have the default be abs? */ |
c906108c | 2755 | namestring = debug_info->ss + fh->issBase + sh.iss; |
8dddcb8f | 2756 | record_minimal_symbol (reader, namestring, sh.value, |
1f9872de JB |
2757 | mst_file_bss, sh.sc, |
2758 | objfile); | |
c906108c SS |
2759 | break; |
2760 | } | |
2761 | } | |
2762 | continue; | |
2763 | } | |
025bb325 | 2764 | /* Handle stabs continuation. */ |
c906108c SS |
2765 | { |
2766 | char *stabstring = debug_info->ss + fh->issBase + sh.iss; | |
36cb7237 PA |
2767 | /* If we need to heap-allocate STABSTRING, this owns |
2768 | it. */ | |
2769 | gdb::unique_xmalloc_ptr<char> stabstring_storage; | |
c906108c | 2770 | int len = strlen (stabstring); |
b8d56208 | 2771 | |
c5aa993b | 2772 | while (stabstring[len - 1] == '\\') |
c906108c SS |
2773 | { |
2774 | SYMR sh2; | |
2775 | char *stabstring1 = stabstring; | |
2776 | char *stabstring2; | |
2777 | int len2; | |
2778 | ||
025bb325 | 2779 | /* Ignore continuation char from 1st string. */ |
c906108c SS |
2780 | len--; |
2781 | ||
025bb325 | 2782 | /* Read next stabstring. */ |
c906108c SS |
2783 | cur_sdx++; |
2784 | (*swap_sym_in) (cur_bfd, | |
2785 | (((char *) debug_info->external_sym) | |
c5aa993b | 2786 | + (fh->isymBase + cur_sdx) |
c906108c SS |
2787 | * external_sym_size), |
2788 | &sh2); | |
2789 | stabstring2 = debug_info->ss + fh->issBase + sh2.iss; | |
2790 | len2 = strlen (stabstring2); | |
2791 | ||
36cb7237 PA |
2792 | /* Concatenate stabstring2 with stabstring1. */ |
2793 | if (stabstring_storage != nullptr) | |
2794 | { | |
2795 | stabstring_storage.reset | |
2796 | ((char *) xrealloc (stabstring_storage.release (), | |
2797 | len + len2 + 1)); | |
2798 | stabstring = stabstring_storage.get (); | |
2799 | } | |
c906108c | 2800 | else |
86f902e0 | 2801 | { |
36cb7237 PA |
2802 | stabstring_storage.reset |
2803 | ((char *) xmalloc (len + len2 + 1)); | |
2804 | stabstring = stabstring_storage.get (); | |
86f902e0 FF |
2805 | strcpy (stabstring, stabstring1); |
2806 | } | |
c906108c SS |
2807 | strcpy (stabstring + len, stabstring2); |
2808 | len += len2; | |
2809 | } | |
2810 | ||
d3119d1e EZ |
2811 | switch (type_code) |
2812 | { | |
a121b7c1 | 2813 | const char *p; |
b8d56208 | 2814 | |
3e43a32a | 2815 | /* Standard, external, non-debugger, symbols. */ |
d3119d1e EZ |
2816 | |
2817 | case N_TEXT | N_EXT: | |
2818 | case N_NBTEXT | N_EXT: | |
d3119d1e EZ |
2819 | goto record_it; |
2820 | ||
2821 | case N_DATA | N_EXT: | |
2822 | case N_NBDATA | N_EXT: | |
d3119d1e EZ |
2823 | goto record_it; |
2824 | ||
2825 | case N_BSS: | |
2826 | case N_BSS | N_EXT: | |
2827 | case N_NBBSS | N_EXT: | |
025bb325 | 2828 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ |
d3119d1e EZ |
2829 | goto record_it; |
2830 | ||
2831 | case N_ABS | N_EXT: | |
2832 | record_it: | |
b98bd911 | 2833 | continue; |
d3119d1e | 2834 | |
025bb325 | 2835 | /* Standard, local, non-debugger, symbols. */ |
d3119d1e EZ |
2836 | |
2837 | case N_NBTEXT: | |
2838 | ||
3e43a32a MS |
2839 | /* We need to be able to deal with both N_FN or |
2840 | N_TEXT, because we have no way of knowing | |
2841 | whether the sys-supplied ld or GNU ld was used | |
2842 | to make the executable. Sequents throw in | |
2843 | another wrinkle -- they renumbered N_FN. */ | |
d3119d1e EZ |
2844 | |
2845 | case N_FN: | |
2846 | case N_FN_SEQ: | |
2847 | case N_TEXT: | |
2848 | continue; | |
2849 | ||
2850 | case N_DATA: | |
d3119d1e EZ |
2851 | goto record_it; |
2852 | ||
2853 | case N_UNDF | N_EXT: | |
025bb325 | 2854 | continue; /* Just undefined, not COMMON. */ |
d3119d1e EZ |
2855 | |
2856 | case N_UNDF: | |
2857 | continue; | |
2858 | ||
2859 | /* Lots of symbol types we can just ignore. */ | |
2860 | ||
2861 | case N_ABS: | |
2862 | case N_NBDATA: | |
2863 | case N_NBBSS: | |
2864 | continue; | |
2865 | ||
025bb325 | 2866 | /* Keep going . . . */ |
d3119d1e EZ |
2867 | |
2868 | /* | |
2869 | * Special symbol types for GNU | |
2870 | */ | |
2871 | case N_INDR: | |
2872 | case N_INDR | N_EXT: | |
2873 | case N_SETA: | |
2874 | case N_SETA | N_EXT: | |
2875 | case N_SETT: | |
2876 | case N_SETT | N_EXT: | |
2877 | case N_SETD: | |
2878 | case N_SETD | N_EXT: | |
2879 | case N_SETB: | |
2880 | case N_SETB | N_EXT: | |
2881 | case N_SETV: | |
2882 | continue; | |
2883 | ||
2884 | /* | |
2885 | * Debugger symbols | |
2886 | */ | |
2887 | ||
2888 | case N_SO: | |
2889 | { | |
d3119d1e | 2890 | static int prev_so_symnum = -10; |
b926417a | 2891 | const char *basename; |
d3119d1e | 2892 | |
3e43a32a | 2893 | /* A zero value is probably an indication for the |
8763cede | 2894 | SunPRO 3.0 compiler. dbx_end_psymtab explicitly tests |
3e43a32a | 2895 | for zero, so don't relocate it. */ |
d3119d1e | 2896 | |
203c3895 | 2897 | if (sh.value == 0 |
5e2b427d | 2898 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
78cc6c2d | 2899 | textlow_not_set = 1; |
d3119d1e EZ |
2900 | else |
2901 | textlow_not_set = 0; | |
203c3895 | 2902 | |
d3119d1e | 2903 | if (prev_so_symnum != symnum - 1) |
025bb325 | 2904 | { /* Here if prev stab wasn't N_SO. */ |
d3119d1e EZ |
2905 | if (pst) |
2906 | { | |
2907 | pst = (struct partial_symtab *) 0; | |
2908 | includes_used = 0; | |
2909 | dependencies_used = 0; | |
2910 | } | |
2911 | } | |
2912 | ||
2913 | prev_so_symnum = symnum; | |
c906108c | 2914 | |
025bb325 MS |
2915 | /* End the current partial symtab and start a |
2916 | new one. */ | |
d3119d1e EZ |
2917 | |
2918 | /* SET_NAMESTRING ();*/ | |
2919 | namestring = stabstring; | |
2920 | ||
3e43a32a | 2921 | /* Null name means end of .o file. Don't start a new |
025bb325 | 2922 | one. */ |
d3119d1e EZ |
2923 | if (*namestring == '\000') |
2924 | continue; | |
2925 | ||
3e43a32a MS |
2926 | /* Some compilers (including gcc) emit a pair of |
2927 | initial N_SOs. The first one is a directory name; | |
2928 | the second the file name. If pst exists, is | |
2929 | empty, and has a filename ending in '/', we assume | |
025bb325 | 2930 | the previous N_SO was a directory name. */ |
b926417a TT |
2931 | basename = lbasename (namestring); |
2932 | if (basename != namestring && *basename == '\000') | |
3e43a32a | 2933 | continue; /* Simply ignore directory |
025bb325 | 2934 | name SOs. */ |
d3119d1e | 2935 | |
3e43a32a MS |
2936 | /* Some other compilers (C++ ones in particular) emit |
2937 | useless SOs for non-existant .c files. We ignore | |
2938 | all subsequent SOs that immediately follow the | |
2939 | first. */ | |
d3119d1e EZ |
2940 | |
2941 | if (!pst) | |
2942 | pst = save_pst; | |
2943 | continue; | |
2944 | } | |
2945 | ||
2946 | case N_BINCL: | |
2947 | continue; | |
2948 | ||
2949 | case N_SOL: | |
2950 | { | |
2951 | enum language tmp_language; | |
b8d56208 | 2952 | |
025bb325 | 2953 | /* Mark down an include file in the current psymtab. */ |
d3119d1e | 2954 | |
025bb325 | 2955 | /* SET_NAMESTRING (); */ |
d3119d1e EZ |
2956 | namestring = stabstring; |
2957 | ||
3e43a32a MS |
2958 | tmp_language |
2959 | = deduce_language_from_filename (namestring); | |
d3119d1e | 2960 | |
3e43a32a MS |
2961 | /* Only change the psymtab's language if we've |
2962 | learned something useful (eg. tmp_language is not | |
2963 | language_unknown). In addition, to match what | |
2964 | start_subfile does, never change from C++ to | |
2965 | C. */ | |
d3119d1e EZ |
2966 | if (tmp_language != language_unknown |
2967 | && (tmp_language != language_c | |
2968 | || psymtab_language != language_cplus)) | |
2969 | psymtab_language = tmp_language; | |
2970 | ||
3e43a32a MS |
2971 | /* In C++, one may expect the same filename to come |
2972 | round many times, when code is coming alternately | |
2973 | from the main file and from inline functions in | |
025bb325 | 2974 | other files. So I check to see if this is a file |
3e43a32a MS |
2975 | we've seen before -- either the main source file, |
2976 | or a previously included file. | |
2977 | ||
2978 | This seems to be a lot of time to be spending on | |
2979 | N_SOL, but things like "break c-exp.y:435" need to | |
2980 | work (I suppose the psymtab_include_list could be | |
2981 | hashed or put in a binary tree, if profiling shows | |
2982 | this is a major hog). */ | |
0ba1096a | 2983 | if (pst && filename_cmp (namestring, pst->filename) == 0) |
d3119d1e | 2984 | continue; |
b8d56208 | 2985 | |
d3119d1e | 2986 | { |
aa1ee363 | 2987 | int i; |
b8d56208 | 2988 | |
d3119d1e | 2989 | for (i = 0; i < includes_used; i++) |
0ba1096a KT |
2990 | if (filename_cmp (namestring, |
2991 | psymtab_include_list[i]) == 0) | |
d3119d1e EZ |
2992 | { |
2993 | i = -1; | |
2994 | break; | |
2995 | } | |
2996 | if (i == -1) | |
2997 | continue; | |
2998 | } | |
2999 | ||
3000 | psymtab_include_list[includes_used++] = namestring; | |
3001 | if (includes_used >= includes_allocated) | |
3002 | { | |
0d5cff50 | 3003 | const char **orig = psymtab_include_list; |
d3119d1e | 3004 | |
0d5cff50 | 3005 | psymtab_include_list = (const char **) |
d3119d1e | 3006 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 3007 | sizeof (const char *)); |
4efb68b1 | 3008 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 3009 | includes_used * sizeof (const char *)); |
d3119d1e EZ |
3010 | } |
3011 | continue; | |
3012 | } | |
025bb325 | 3013 | case N_LSYM: /* Typedef or automatic variable. */ |
3e43a32a MS |
3014 | case N_STSYM: /* Data seg var -- static */ |
3015 | case N_LCSYM: /* BSS " */ | |
3016 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
3017 | case N_NBSTS: /* Gould nobase. */ | |
3018 | case N_NBLCS: /* symbols. */ | |
d3119d1e | 3019 | case N_FUN: |
3e43a32a MS |
3020 | case N_GSYM: /* Global (extern) variable; can be |
3021 | data or bss (sigh FIXME). */ | |
d3119d1e EZ |
3022 | |
3023 | /* Following may probably be ignored; I'll leave them here | |
3024 | for now (until I do Pascal and Modula 2 extensions). */ | |
3025 | ||
3e43a32a MS |
3026 | case N_PC: /* I may or may not need this; I |
3027 | suspect not. */ | |
3028 | case N_M2C: /* I suspect that I can ignore this | |
025bb325 MS |
3029 | here. */ |
3030 | case N_SCOPE: /* Same. */ | |
d3119d1e | 3031 | |
025bb325 | 3032 | /* SET_NAMESTRING (); */ |
d3119d1e EZ |
3033 | namestring = stabstring; |
3034 | p = (char *) strchr (namestring, ':'); | |
3035 | if (!p) | |
025bb325 | 3036 | continue; /* Not a debugging symbol. */ |
d3119d1e EZ |
3037 | |
3038 | ||
3039 | ||
3040 | /* Main processing section for debugging symbols which | |
3e43a32a MS |
3041 | the initial read through the symbol tables needs to |
3042 | worry about. If we reach this point, the symbol | |
3043 | which we are considering is definitely one we are | |
3044 | interested in. p must also contain the (valid) | |
3045 | index into the namestring which indicates the | |
3046 | debugging type symbol. */ | |
d3119d1e EZ |
3047 | |
3048 | switch (p[1]) | |
3049 | { | |
3050 | case 'S': | |
5e2b427d | 3051 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 3052 | namestring = gdbarch_static_transform_name |
5e2b427d | 3053 | (gdbarch, namestring); |
149ad273 | 3054 | |
04a679b8 | 3055 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3056 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 3057 | SECT_OFF_DATA (objfile), |
75aedd27 | 3058 | psymbol_placement::STATIC, |
1762568f | 3059 | sh.value, |
d3119d1e EZ |
3060 | psymtab_language, objfile); |
3061 | continue; | |
3062 | case 'G': | |
025bb325 MS |
3063 | /* The addresses in these entries are reported |
3064 | to be wrong. See the code that reads 'G's | |
3065 | for symtabs. */ | |
04a679b8 | 3066 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3067 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 3068 | SECT_OFF_DATA (objfile), |
75aedd27 | 3069 | psymbol_placement::GLOBAL, |
1762568f | 3070 | sh.value, |
d3119d1e EZ |
3071 | psymtab_language, objfile); |
3072 | continue; | |
3073 | ||
3074 | case 'T': | |
3075 | /* When a 'T' entry is defining an anonymous enum, it | |
3076 | may have a name which is the empty string, or a | |
3077 | single space. Since they're not really defining a | |
3078 | symbol, those shouldn't go in the partial symbol | |
3079 | table. We do pick up the elements of such enums at | |
3080 | 'check_enum:', below. */ | |
3081 | if (p >= namestring + 2 | |
3082 | || (p == namestring + 1 | |
3083 | && namestring[0] != ' ')) | |
3084 | { | |
04a679b8 | 3085 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3086 | STRUCT_DOMAIN, LOC_TYPEDEF, |
79748972 | 3087 | -1, |
75aedd27 | 3088 | psymbol_placement::STATIC, |
1762568f | 3089 | 0, psymtab_language, objfile); |
d3119d1e EZ |
3090 | if (p[2] == 't') |
3091 | { | |
3092 | /* Also a typedef with the same name. */ | |
3e43a32a MS |
3093 | add_psymbol_to_list (namestring, |
3094 | p - namestring, 1, | |
176620f1 | 3095 | VAR_DOMAIN, LOC_TYPEDEF, |
79748972 | 3096 | -1, |
75aedd27 | 3097 | psymbol_placement::STATIC, |
1762568f | 3098 | 0, psymtab_language, |
3e43a32a | 3099 | objfile); |
d3119d1e EZ |
3100 | p += 1; |
3101 | } | |
d3119d1e EZ |
3102 | } |
3103 | goto check_enum; | |
3104 | case 't': | |
3e43a32a | 3105 | if (p != namestring) /* a name is there, not |
025bb325 | 3106 | just :T... */ |
d3119d1e | 3107 | { |
04a679b8 | 3108 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3109 | VAR_DOMAIN, LOC_TYPEDEF, |
79748972 | 3110 | -1, |
75aedd27 | 3111 | psymbol_placement::STATIC, |
1762568f | 3112 | 0, psymtab_language, objfile); |
d3119d1e EZ |
3113 | } |
3114 | check_enum: | |
3e43a32a MS |
3115 | /* If this is an enumerated type, we need to add |
3116 | all the enum constants to the partial symbol | |
3117 | table. This does not cover enums without names, | |
025bb325 | 3118 | e.g. "enum {a, b} c;" in C, but fortunately |
3e43a32a MS |
3119 | those are rare. There is no way for GDB to find |
3120 | those from the enum type without spending too | |
3121 | much time on it. Thus to solve this problem, | |
3122 | the compiler needs to put out the enum in a | |
3123 | nameless type. GCC2 does this. */ | |
d3119d1e EZ |
3124 | |
3125 | /* We are looking for something of the form | |
3126 | <name> ":" ("t" | "T") [<number> "="] "e" | |
3127 | {<constant> ":" <value> ","} ";". */ | |
3128 | ||
3129 | /* Skip over the colon and the 't' or 'T'. */ | |
3130 | p += 2; | |
3e43a32a MS |
3131 | /* This type may be given a number. Also, numbers |
3132 | can come in pairs like (0,26). Skip over it. */ | |
d3119d1e EZ |
3133 | while ((*p >= '0' && *p <= '9') |
3134 | || *p == '(' || *p == ',' || *p == ')' | |
3135 | || *p == '=') | |
3136 | p++; | |
3137 | ||
3138 | if (*p++ == 'e') | |
3139 | { | |
3e43a32a MS |
3140 | /* The aix4 compiler emits extra crud before |
3141 | the members. */ | |
d3119d1e EZ |
3142 | if (*p == '-') |
3143 | { | |
3144 | /* Skip over the type (?). */ | |
3145 | while (*p != ':') | |
3146 | p++; | |
3147 | ||
3148 | /* Skip over the colon. */ | |
3149 | p++; | |
3150 | } | |
3151 | ||
3152 | /* We have found an enumerated type. */ | |
3153 | /* According to comments in read_enum_type | |
3154 | a comma could end it instead of a semicolon. | |
3155 | I don't know where that happens. | |
3156 | Accept either. */ | |
3157 | while (*p && *p != ';' && *p != ',') | |
3158 | { | |
a121b7c1 | 3159 | const char *q; |
d3119d1e | 3160 | |
3e43a32a MS |
3161 | /* Check for and handle cretinous dbx |
3162 | symbol name continuation! */ | |
d3119d1e EZ |
3163 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) |
3164 | p = next_symbol_text (objfile); | |
3165 | ||
3166 | /* Point to the character after the name | |
3167 | of the enum constant. */ | |
3168 | for (q = p; *q && *q != ':'; q++) | |
3169 | ; | |
3170 | /* Note that the value doesn't matter for | |
3e43a32a MS |
3171 | enum constants in psymtabs, just in |
3172 | symtabs. */ | |
04a679b8 | 3173 | add_psymbol_to_list (p, q - p, 1, |
176620f1 | 3174 | VAR_DOMAIN, LOC_CONST, |
79748972 | 3175 | -1, |
75aedd27 | 3176 | psymbol_placement::STATIC, |
1762568f | 3177 | 0, psymtab_language, |
3e43a32a | 3178 | objfile); |
d3119d1e EZ |
3179 | /* Point past the name. */ |
3180 | p = q; | |
3181 | /* Skip over the value. */ | |
3182 | while (*p && *p != ',') | |
3183 | p++; | |
3184 | /* Advance past the comma. */ | |
3185 | if (*p) | |
3186 | p++; | |
3187 | } | |
3188 | } | |
3189 | continue; | |
3190 | case 'c': | |
3191 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 3192 | add_psymbol_to_list (namestring, p - namestring, 1, |
79748972 | 3193 | VAR_DOMAIN, LOC_CONST, -1, |
75aedd27 | 3194 | psymbol_placement::STATIC, |
1762568f | 3195 | 0, psymtab_language, objfile); |
d3119d1e EZ |
3196 | continue; |
3197 | ||
3198 | case 'f': | |
3199 | if (! pst) | |
3200 | { | |
795afcbb TT |
3201 | std::string copy (namestring, p); |
3202 | function_outside_compilation_unit_complaint | |
3203 | (copy.c_str ()); | |
d3119d1e | 3204 | } |
04a679b8 | 3205 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3206 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 3207 | SECT_OFF_TEXT (objfile), |
75aedd27 | 3208 | psymbol_placement::STATIC, |
1762568f | 3209 | sh.value, |
d3119d1e EZ |
3210 | psymtab_language, objfile); |
3211 | continue; | |
3212 | ||
3213 | /* Global functions were ignored here, but now they | |
3e43a32a MS |
3214 | are put into the global psymtab like one would |
3215 | expect. They're also in the minimal symbol | |
3216 | table. */ | |
d3119d1e EZ |
3217 | case 'F': |
3218 | if (! pst) | |
3219 | { | |
795afcbb TT |
3220 | std::string copy (namestring, p); |
3221 | function_outside_compilation_unit_complaint | |
3222 | (copy.c_str ()); | |
d3119d1e | 3223 | } |
04a679b8 | 3224 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 3225 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 3226 | SECT_OFF_TEXT (objfile), |
75aedd27 | 3227 | psymbol_placement::GLOBAL, |
1762568f | 3228 | sh.value, |
d3119d1e EZ |
3229 | psymtab_language, objfile); |
3230 | continue; | |
3231 | ||
3e43a32a MS |
3232 | /* Two things show up here (hopefully); static |
3233 | symbols of local scope (static used inside | |
3234 | braces) or extensions of structure symbols. We | |
3235 | can ignore both. */ | |
d3119d1e EZ |
3236 | case 'V': |
3237 | case '(': | |
3238 | case '0': | |
3239 | case '1': | |
3240 | case '2': | |
3241 | case '3': | |
3242 | case '4': | |
3243 | case '5': | |
3244 | case '6': | |
3245 | case '7': | |
3246 | case '8': | |
3247 | case '9': | |
3248 | case '-': | |
3e43a32a MS |
3249 | case '#': /* For symbol identification (used |
3250 | in live ranges). */ | |
d3119d1e EZ |
3251 | continue; |
3252 | ||
3253 | case ':': | |
3e43a32a MS |
3254 | /* It is a C++ nested symbol. We don't need to |
3255 | record it (I don't think); if we try to look up | |
3256 | foo::bar::baz, then symbols for the symtab | |
3257 | containing foo should get read in, I think. */ | |
d3119d1e EZ |
3258 | /* Someone says sun cc puts out symbols like |
3259 | /foo/baz/maclib::/usr/local/bin/maclib, | |
3260 | which would get here with a symbol type of ':'. */ | |
3261 | continue; | |
3262 | ||
3263 | default: | |
3e43a32a MS |
3264 | /* Unexpected symbol descriptor. The second and |
3265 | subsequent stabs of a continued stab can show up | |
3266 | here. The question is whether they ever can | |
3267 | mimic a normal stab--it would be nice if not, | |
3268 | since we certainly don't want to spend the time | |
3269 | searching to the end of every string looking for | |
d3119d1e EZ |
3270 | a backslash. */ |
3271 | ||
b98664d3 | 3272 | complaint (_("unknown symbol descriptor `%c'"), p[1]); |
d3119d1e EZ |
3273 | |
3274 | /* Ignore it; perhaps it is an extension that we don't | |
3275 | know about. */ | |
3276 | continue; | |
3277 | } | |
3278 | ||
3279 | case N_EXCL: | |
3280 | continue; | |
3281 | ||
3282 | case N_ENDM: | |
5afc051b | 3283 | /* Solaris 2 end of module, finish current partial |
4ae976d1 TT |
3284 | symbol table. dbx_end_psymtab will set the |
3285 | high text address of PST to the proper value, | |
3286 | which is necessary if a module compiled without | |
5afc051b | 3287 | debugging info follows this module. */ |
203c3895 | 3288 | if (pst |
5e2b427d | 3289 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
d3119d1e EZ |
3290 | { |
3291 | pst = (struct partial_symtab *) 0; | |
3292 | includes_used = 0; | |
3293 | dependencies_used = 0; | |
3294 | } | |
d3119d1e EZ |
3295 | continue; |
3296 | ||
3297 | case N_RBRAC: | |
79748972 | 3298 | if (sh.value > save_pst->raw_text_high ()) |
4ae976d1 | 3299 | save_pst->set_text_high (sh.value); |
d3119d1e EZ |
3300 | continue; |
3301 | case N_EINCL: | |
3302 | case N_DSLINE: | |
3303 | case N_BSLINE: | |
3e43a32a MS |
3304 | case N_SSYM: /* Claim: Structure or union |
3305 | element. Hopefully, I can | |
3306 | ignore this. */ | |
3307 | case N_ENTRY: /* Alternate entry point; can | |
025bb325 | 3308 | ignore. */ |
3e43a32a | 3309 | case N_MAIN: /* Can definitely ignore this. */ |
025bb325 MS |
3310 | case N_CATCH: /* These are GNU C++ extensions. */ |
3311 | case N_EHDECL: /* that can safely be ignored here. */ | |
d3119d1e EZ |
3312 | case N_LENG: |
3313 | case N_BCOMM: | |
3314 | case N_ECOMM: | |
3315 | case N_ECOML: | |
3316 | case N_FNAME: | |
3317 | case N_SLINE: | |
3318 | case N_RSYM: | |
3319 | case N_PSYM: | |
3320 | case N_LBRAC: | |
3321 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
3322 | case N_DEFD: /* GNU Modula-2 */ | |
3e43a32a MS |
3323 | case N_ALIAS: /* SunPro F77: alias name, ignore |
3324 | for now. */ | |
d3119d1e | 3325 | |
025bb325 | 3326 | case N_OBJ: /* Useless types from Solaris. */ |
d3119d1e | 3327 | case N_OPT: |
3e43a32a | 3328 | /* These symbols aren't interesting; don't worry about |
025bb325 | 3329 | them. */ |
d3119d1e EZ |
3330 | |
3331 | continue; | |
3332 | ||
3333 | default: | |
3e43a32a MS |
3334 | /* If we haven't found it yet, ignore it. It's |
3335 | probably some new type we don't know about yet. */ | |
b98664d3 | 3336 | complaint (_("unknown symbol type %s"), |
025bb325 | 3337 | hex_string (type_code)); /* CUR_SYMBOL_TYPE */ |
d3119d1e EZ |
3338 | continue; |
3339 | } | |
c906108c | 3340 | } |
c5aa993b | 3341 | /* end - Handle continuation */ |
c906108c SS |
3342 | } |
3343 | } | |
3344 | else | |
3345 | { | |
3346 | for (cur_sdx = 0; cur_sdx < fh->csym;) | |
3347 | { | |
b926417a | 3348 | char *sym_name; |
fe978cb0 | 3349 | enum address_class theclass; |
2273f0ac | 3350 | CORE_ADDR minsym_value; |
79748972 | 3351 | short section = -1; |
c906108c SS |
3352 | |
3353 | (*swap_sym_in) (cur_bfd, | |
3354 | ((char *) debug_info->external_sym | |
3355 | + ((fh->isymBase + cur_sdx) | |
3356 | * external_sym_size)), | |
3357 | &sh); | |
3358 | ||
3359 | if (ECOFF_IS_STAB (&sh)) | |
3360 | { | |
3361 | cur_sdx++; | |
3362 | continue; | |
3363 | } | |
3364 | ||
3365 | /* Non absolute static symbols go into the minimal table. */ | |
c5aa993b | 3366 | if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil |
c906108c SS |
3367 | || (sh.index == indexNil |
3368 | && (sh.st != stStatic || sh.sc == scAbs))) | |
3369 | { | |
025bb325 | 3370 | /* FIXME, premature? */ |
c906108c SS |
3371 | cur_sdx++; |
3372 | continue; | |
3373 | } | |
3374 | ||
b926417a | 3375 | sym_name = debug_info->ss + fh->issBase + sh.iss; |
c906108c | 3376 | |
2273f0ac TT |
3377 | minsym_value = sh.value; |
3378 | ||
c906108c SS |
3379 | switch (sh.sc) |
3380 | { | |
3381 | case scText: | |
3382 | case scRConst: | |
3383 | /* The value of a stEnd symbol is the displacement from the | |
3384 | corresponding start symbol value, do not relocate it. */ | |
3385 | if (sh.st != stEnd) | |
79748972 | 3386 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
3387 | break; |
3388 | case scData: | |
3389 | case scSData: | |
3390 | case scRData: | |
3391 | case scPData: | |
3392 | case scXData: | |
79748972 | 3393 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
3394 | break; |
3395 | case scBss: | |
3396 | case scSBss: | |
79748972 | 3397 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
3398 | break; |
3399 | } | |
3400 | ||
3401 | switch (sh.st) | |
3402 | { | |
3403 | CORE_ADDR high; | |
3404 | CORE_ADDR procaddr; | |
3405 | int new_sdx; | |
3406 | ||
3407 | case stStaticProc: | |
b926417a | 3408 | reader.record_with_info (sym_name, minsym_value, |
8dddcb8f TT |
3409 | mst_file_text, |
3410 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3411 | |
3412 | /* FALLTHROUGH */ | |
3413 | ||
3414 | case stProc: | |
1fb4c65b JB |
3415 | /* Ignore all parameter symbol records. */ |
3416 | if (sh.index >= hdr->iauxMax) | |
3417 | { | |
3418 | /* Should not happen, but does when cross-compiling | |
3419 | with the MIPS compiler. FIXME -- pull later. */ | |
b926417a | 3420 | index_complaint (sym_name); |
025bb325 | 3421 | new_sdx = cur_sdx + 1; /* Don't skip at all. */ |
1fb4c65b JB |
3422 | } |
3423 | else | |
3424 | new_sdx = AUX_GET_ISYM (fh->fBigendian, | |
3425 | (debug_info->external_aux | |
3426 | + fh->iauxBase | |
3427 | + sh.index)); | |
3428 | ||
3429 | if (new_sdx <= cur_sdx) | |
3430 | { | |
3431 | /* This should not happen either... FIXME. */ | |
b98664d3 | 3432 | complaint (_("bad proc end in aux found from symbol %s"), |
b926417a | 3433 | sym_name); |
025bb325 | 3434 | new_sdx = cur_sdx + 1; /* Don't skip backward. */ |
1fb4c65b JB |
3435 | } |
3436 | ||
3437 | /* For stProc symbol records, we need to check the | |
3438 | storage class as well, as only (stProc, scText) | |
3439 | entries represent "real" procedures - See the | |
3440 | Compaq document titled "Object File / Symbol Table | |
3441 | Format Specification" for more information. If the | |
3442 | storage class is not scText, we discard the whole | |
3443 | block of symbol records for this stProc. */ | |
3444 | if (sh.st == stProc && sh.sc != scText) | |
3445 | goto skip; | |
3446 | ||
c906108c | 3447 | /* Usually there is a local and a global stProc symbol |
025bb325 | 3448 | for a function. This means that the function name |
c906108c SS |
3449 | has already been entered into the mimimal symbol table |
3450 | while processing the global symbols in pass 2 above. | |
3451 | One notable exception is the PROGRAM name from | |
3452 | f77 compiled executables, it is only put out as | |
3453 | local stProc symbol, and a global MAIN__ stProc symbol | |
3454 | points to it. It doesn't matter though, as gdb is | |
3455 | still able to find the PROGRAM name via the partial | |
3456 | symbol table, and the MAIN__ symbol via the minimal | |
3457 | symbol table. */ | |
3458 | if (sh.st == stProc) | |
b926417a | 3459 | add_psymbol_to_list (sym_name, strlen (sym_name), 1, |
176620f1 | 3460 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 3461 | section, |
75aedd27 | 3462 | psymbol_placement::GLOBAL, |
1762568f | 3463 | sh.value, psymtab_language, objfile); |
c906108c | 3464 | else |
b926417a | 3465 | add_psymbol_to_list (sym_name, strlen (sym_name), 1, |
176620f1 | 3466 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 3467 | section, |
75aedd27 | 3468 | psymbol_placement::STATIC, |
1762568f | 3469 | sh.value, psymtab_language, objfile); |
c906108c | 3470 | |
c906108c SS |
3471 | procaddr = sh.value; |
3472 | ||
c906108c SS |
3473 | cur_sdx = new_sdx; |
3474 | (*swap_sym_in) (cur_bfd, | |
3475 | ((char *) debug_info->external_sym | |
3476 | + ((fh->isymBase + cur_sdx - 1) | |
3477 | * external_sym_size)), | |
3478 | &sh); | |
3479 | if (sh.st != stEnd) | |
3480 | continue; | |
3481 | ||
3482 | /* Kludge for Irix 5.2 zero fh->adr. */ | |
3483 | if (!relocatable | |
52948f01 | 3484 | && (!pst->text_low_valid |
79748972 | 3485 | || procaddr < pst->raw_text_low ())) |
4ae976d1 | 3486 | pst->set_text_low (procaddr); |
c906108c SS |
3487 | |
3488 | high = procaddr + sh.value; | |
79748972 | 3489 | if (high > pst->raw_text_high ()) |
4ae976d1 | 3490 | pst->set_text_high (high); |
c906108c SS |
3491 | continue; |
3492 | ||
3493 | case stStatic: /* Variable */ | |
c5aa993b | 3494 | if (SC_IS_DATA (sh.sc)) |
b926417a | 3495 | reader.record_with_info (sym_name, minsym_value, |
8dddcb8f TT |
3496 | mst_file_data, |
3497 | SECT_OFF_DATA (objfile)); | |
c906108c | 3498 | else |
b926417a | 3499 | reader.record_with_info (sym_name, minsym_value, |
8dddcb8f TT |
3500 | mst_file_bss, |
3501 | SECT_OFF_BSS (objfile)); | |
fe978cb0 | 3502 | theclass = LOC_STATIC; |
c906108c SS |
3503 | break; |
3504 | ||
c5aa993b | 3505 | case stIndirect: /* Irix5 forward declaration */ |
025bb325 | 3506 | /* Skip forward declarations from Irix5 cc. */ |
c906108c SS |
3507 | goto skip; |
3508 | ||
c5aa993b | 3509 | case stTypedef: /* Typedef */ |
c906108c SS |
3510 | /* Skip typedefs for forward declarations and opaque |
3511 | structs from alpha and mips cc. */ | |
3512 | if (sh.iss == 0 || has_opaque_xref (fh, &sh)) | |
3513 | goto skip; | |
fe978cb0 | 3514 | theclass = LOC_TYPEDEF; |
c906108c SS |
3515 | break; |
3516 | ||
3517 | case stConstant: /* Constant decl */ | |
fe978cb0 | 3518 | theclass = LOC_CONST; |
c906108c SS |
3519 | break; |
3520 | ||
3521 | case stUnion: | |
3522 | case stStruct: | |
3523 | case stEnum: | |
c5aa993b | 3524 | case stBlock: /* { }, str, un, enum */ |
c906108c | 3525 | /* Do not create a partial symbol for cc unnamed aggregates |
025bb325 | 3526 | and gcc empty aggregates. */ |
c906108c | 3527 | if ((sh.sc == scInfo |
c5aa993b | 3528 | || SC_IS_COMMON (sh.sc)) |
c906108c SS |
3529 | && sh.iss != 0 |
3530 | && sh.index != cur_sdx + 2) | |
3531 | { | |
b926417a | 3532 | add_psymbol_to_list (sym_name, strlen (sym_name), 1, |
79748972 | 3533 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 3534 | psymbol_placement::STATIC, |
1762568f | 3535 | 0, psymtab_language, objfile); |
c906108c SS |
3536 | } |
3537 | handle_psymbol_enumerators (objfile, fh, sh.st, sh.value); | |
3538 | ||
025bb325 | 3539 | /* Skip over the block. */ |
c906108c SS |
3540 | new_sdx = sh.index; |
3541 | if (new_sdx <= cur_sdx) | |
3542 | { | |
025bb325 | 3543 | /* This happens with the Ultrix kernel. */ |
b926417a TT |
3544 | complaint (_("bad aux index at block symbol %s"), |
3545 | sym_name); | |
025bb325 | 3546 | new_sdx = cur_sdx + 1; /* Don't skip backward. */ |
c906108c SS |
3547 | } |
3548 | cur_sdx = new_sdx; | |
3549 | continue; | |
3550 | ||
3551 | case stFile: /* File headers */ | |
3552 | case stLabel: /* Labels */ | |
3553 | case stEnd: /* Ends of files */ | |
3554 | goto skip; | |
3555 | ||
3556 | case stLocal: /* Local variables */ | |
3557 | /* Normally these are skipped because we skip over | |
3558 | all blocks we see. However, these can occur | |
025bb325 | 3559 | as visible symbols in a .h file that contains code. */ |
c906108c SS |
3560 | goto skip; |
3561 | ||
3562 | default: | |
b926417a | 3563 | /* Both complaints are valid: one gives symbol sym_name, |
c906108c | 3564 | the other the offending symbol type. */ |
b98664d3 | 3565 | complaint (_("unknown local symbol %s"), |
b926417a | 3566 | sym_name); |
b98664d3 | 3567 | complaint (_("with type %d"), sh.st); |
c906108c SS |
3568 | cur_sdx++; |
3569 | continue; | |
3570 | } | |
025bb325 | 3571 | /* Use this gdb symbol. */ |
b926417a | 3572 | add_psymbol_to_list (sym_name, strlen (sym_name), 1, |
79748972 | 3573 | VAR_DOMAIN, theclass, section, |
75aedd27 | 3574 | psymbol_placement::STATIC, |
1762568f | 3575 | sh.value, psymtab_language, objfile); |
c906108c | 3576 | skip: |
025bb325 | 3577 | cur_sdx++; /* Go to next file symbol. */ |
c906108c SS |
3578 | } |
3579 | ||
025bb325 | 3580 | /* Now do enter the external symbols. */ |
c906108c SS |
3581 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; |
3582 | cur_sdx = fdr_to_pst[f_idx].n_globals; | |
3583 | PST_PRIVATE (save_pst)->extern_count = cur_sdx; | |
3584 | PST_PRIVATE (save_pst)->extern_tab = ext_ptr; | |
3585 | for (; --cur_sdx >= 0; ext_ptr++) | |
3586 | { | |
fe978cb0 | 3587 | enum address_class theclass; |
c906108c | 3588 | SYMR *psh; |
c906108c | 3589 | CORE_ADDR svalue; |
79748972 | 3590 | short section; |
c906108c SS |
3591 | |
3592 | if (ext_ptr->ifd != f_idx) | |
3e43a32a MS |
3593 | internal_error (__FILE__, __LINE__, |
3594 | _("failed internal consistency check")); | |
c906108c SS |
3595 | psh = &ext_ptr->asym; |
3596 | ||
3597 | /* Do not add undefined symbols to the partial symbol table. */ | |
c5aa993b | 3598 | if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil) |
c906108c SS |
3599 | continue; |
3600 | ||
3601 | svalue = psh->value; | |
3602 | switch (psh->sc) | |
3603 | { | |
79748972 | 3604 | default: |
c906108c SS |
3605 | case scText: |
3606 | case scRConst: | |
79748972 | 3607 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
3608 | break; |
3609 | case scData: | |
3610 | case scSData: | |
3611 | case scRData: | |
3612 | case scPData: | |
3613 | case scXData: | |
79748972 | 3614 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
3615 | break; |
3616 | case scBss: | |
3617 | case scSBss: | |
79748972 | 3618 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
3619 | break; |
3620 | } | |
3621 | ||
3622 | switch (psh->st) | |
3623 | { | |
3624 | case stNil: | |
3625 | /* These are generated for static symbols in .o files, | |
3626 | ignore them. */ | |
3627 | continue; | |
3628 | case stProc: | |
3629 | case stStaticProc: | |
3630 | /* External procedure symbols have been entered | |
3631 | into the minimal symbol table in pass 2 above. | |
3632 | Ignore them, as parse_external will ignore them too. */ | |
3633 | continue; | |
3634 | case stLabel: | |
fe978cb0 | 3635 | theclass = LOC_LABEL; |
c906108c SS |
3636 | break; |
3637 | default: | |
23136709 | 3638 | unknown_ext_complaint (debug_info->ssext + psh->iss); |
86a73007 TT |
3639 | /* Pretend it's global. */ |
3640 | /* Fall through. */ | |
c906108c SS |
3641 | case stGlobal: |
3642 | /* Global common symbols are resolved by the runtime loader, | |
3643 | ignore them. */ | |
c5aa993b | 3644 | if (SC_IS_COMMON (psh->sc)) |
c906108c SS |
3645 | continue; |
3646 | ||
fe978cb0 | 3647 | theclass = LOC_STATIC; |
c906108c SS |
3648 | break; |
3649 | } | |
b926417a TT |
3650 | char *sym_name = debug_info->ssext + psh->iss; |
3651 | add_psymbol_to_list (sym_name, strlen (sym_name), 1, | |
fe978cb0 | 3652 | VAR_DOMAIN, theclass, |
79748972 | 3653 | section, |
75aedd27 | 3654 | psymbol_placement::GLOBAL, |
1762568f | 3655 | svalue, psymtab_language, objfile); |
c906108c SS |
3656 | } |
3657 | } | |
3658 | ||
8763cede | 3659 | /* Link pst to FDR. dbx_end_psymtab returns NULL if the psymtab was |
c5aa993b | 3660 | empty and put on the free list. */ |
8763cede DE |
3661 | fdr_to_pst[f_idx].pst |
3662 | = dbx_end_psymtab (objfile, save_pst, | |
3663 | psymtab_include_list, includes_used, | |
79748972 | 3664 | -1, save_pst->raw_text_high (), |
8763cede DE |
3665 | dependency_list, dependencies_used, |
3666 | textlow_not_set); | |
c906108c SS |
3667 | includes_used = 0; |
3668 | dependencies_used = 0; | |
3669 | ||
c906108c | 3670 | /* The objfile has its functions reordered if this partial symbol |
c5aa993b JM |
3671 | table overlaps any other partial symbol table. |
3672 | We cannot assume a reordered objfile if a partial symbol table | |
3673 | is contained within another partial symbol table, as partial symbol | |
3674 | tables for include files with executable code are contained | |
3675 | within the partial symbol table for the including source file, | |
3676 | and we do not want to flag the objfile reordered for these cases. | |
3677 | ||
3678 | This strategy works well for Irix-5.2 shared libraries, but we | |
3679 | might have to use a more elaborate (and slower) algorithm for | |
3680 | other cases. */ | |
c906108c SS |
3681 | save_pst = fdr_to_pst[f_idx].pst; |
3682 | if (save_pst != NULL | |
52948f01 | 3683 | && save_pst->text_low_valid |
c906108c SS |
3684 | && !(objfile->flags & OBJF_REORDERED)) |
3685 | { | |
f252c6d5 | 3686 | for (partial_symtab *iter : objfile->psymtabs ()) |
b22a7c6a TT |
3687 | { |
3688 | if (save_pst != iter | |
3689 | && save_pst->raw_text_low () >= iter->raw_text_low () | |
3690 | && save_pst->raw_text_low () < iter->raw_text_high () | |
3691 | && save_pst->raw_text_high () > iter->raw_text_high ()) | |
3692 | { | |
3693 | objfile->flags |= OBJF_REORDERED; | |
3694 | break; | |
3695 | } | |
3696 | } | |
c906108c SS |
3697 | } |
3698 | } | |
3699 | ||
025bb325 | 3700 | /* Now scan the FDRs for dependencies. */ |
c906108c SS |
3701 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) |
3702 | { | |
3703 | fh = f_idx + debug_info->fdr; | |
3704 | pst = fdr_to_pst[f_idx].pst; | |
3705 | ||
cafb3438 | 3706 | if (pst == NULL) |
c906108c SS |
3707 | continue; |
3708 | ||
025bb325 | 3709 | /* This should catch stabs-in-ecoff. */ |
c906108c SS |
3710 | if (fh->crfd <= 1) |
3711 | continue; | |
3712 | ||
3e43a32a MS |
3713 | /* Skip the first file indirect entry as it is a self dependency for |
3714 | source files or a reverse .h -> .c dependency for header files. */ | |
c906108c | 3715 | pst->number_of_dependencies = 0; |
a9342b62 TT |
3716 | pst->dependencies |
3717 | = objfile->partial_symtabs->allocate_dependencies (fh->crfd - 1); | |
c906108c SS |
3718 | for (s_idx = 1; s_idx < fh->crfd; s_idx++) |
3719 | { | |
3720 | RFDT rh; | |
3721 | ||
3722 | (*swap_rfd_in) (cur_bfd, | |
3723 | ((char *) debug_info->external_rfd | |
3724 | + (fh->rfdBase + s_idx) * external_rfd_size), | |
3725 | &rh); | |
3726 | if (rh < 0 || rh >= hdr->ifdMax) | |
3727 | { | |
b98664d3 | 3728 | complaint (_("bad file number %ld"), rh); |
c906108c SS |
3729 | continue; |
3730 | } | |
3731 | ||
3732 | /* Skip self dependencies of header files. */ | |
3733 | if (rh == f_idx) | |
3734 | continue; | |
3735 | ||
3736 | /* Do not add to dependeny list if psymtab was empty. */ | |
cafb3438 | 3737 | if (fdr_to_pst[rh].pst == NULL) |
c906108c | 3738 | continue; |
3e43a32a MS |
3739 | pst->dependencies[pst->number_of_dependencies++] |
3740 | = fdr_to_pst[rh].pst; | |
c906108c SS |
3741 | } |
3742 | } | |
3743 | ||
3744 | /* Remove the dummy psymtab created for -O3 images above, if it is | |
3745 | still empty, to enable the detection of stripped executables. */ | |
d320c2b5 TT |
3746 | pst = objfile->partial_symtabs->psymtabs; |
3747 | if (pst->next == NULL | |
3748 | && pst->number_of_dependencies == 0 | |
3749 | && pst->n_global_syms == 0 | |
3750 | && pst->n_static_syms == 0) | |
3751 | objfile->partial_symtabs->psymtabs = NULL; | |
c906108c SS |
3752 | } |
3753 | ||
3754 | /* If the current psymbol has an enumerated type, we need to add | |
b021a221 | 3755 | all the enum constants to the partial symbol table. */ |
c906108c SS |
3756 | |
3757 | static void | |
fba45db2 KB |
3758 | handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype, |
3759 | CORE_ADDR svalue) | |
c906108c SS |
3760 | { |
3761 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
12b9c64f | 3762 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c | 3763 | char *ext_sym = ((char *) debug_info->external_sym |
c5aa993b | 3764 | + ((fh->isymBase + cur_sdx + 1) * external_sym_size)); |
c906108c SS |
3765 | SYMR sh; |
3766 | TIR tir; | |
3767 | ||
3768 | switch (stype) | |
3769 | { | |
3770 | case stEnum: | |
3771 | break; | |
3772 | ||
3773 | case stBlock: | |
3774 | /* It is an enumerated type if the next symbol entry is a stMember | |
c5aa993b JM |
3775 | and its auxiliary index is indexNil or its auxiliary entry |
3776 | is a plain btNil or btVoid. | |
3777 | Alpha cc -migrate enums are recognized by a zero index and | |
3778 | a zero symbol value. | |
3779 | DU 4.0 cc enums are recognized by a member type of btEnum without | |
3780 | qualifiers and a zero symbol value. */ | |
c906108c SS |
3781 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); |
3782 | if (sh.st != stMember) | |
3783 | return; | |
3784 | ||
3785 | if (sh.index == indexNil | |
3786 | || (sh.index == 0 && svalue == 0)) | |
3787 | break; | |
3788 | (*debug_swap->swap_tir_in) (fh->fBigendian, | |
3789 | &(debug_info->external_aux | |
3790 | + fh->iauxBase + sh.index)->a_ti, | |
3791 | &tir); | |
3792 | if ((tir.bt != btNil | |
3793 | && tir.bt != btVoid | |
3794 | && (tir.bt != btEnum || svalue != 0)) | |
3795 | || tir.tq0 != tqNil) | |
3796 | return; | |
3797 | break; | |
3798 | ||
3799 | default: | |
3800 | return; | |
3801 | } | |
3802 | ||
3803 | for (;;) | |
3804 | { | |
3805 | char *name; | |
3806 | ||
3807 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); | |
3808 | if (sh.st != stMember) | |
3809 | break; | |
3810 | name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
3811 | ||
3812 | /* Note that the value doesn't matter for enum constants | |
c5aa993b | 3813 | in psymtabs, just in symtabs. */ |
04a679b8 | 3814 | add_psymbol_to_list (name, strlen (name), 1, |
79748972 | 3815 | VAR_DOMAIN, LOC_CONST, -1, |
75aedd27 | 3816 | psymbol_placement::STATIC, 0, |
79748972 | 3817 | psymtab_language, objfile); |
c906108c SS |
3818 | ext_sym += external_sym_size; |
3819 | } | |
3820 | } | |
3821 | ||
025bb325 | 3822 | /* Get the next symbol. OBJFILE is unused. */ |
0e7e8d51 | 3823 | |
a121b7c1 | 3824 | static const char * |
0e7e8d51 | 3825 | mdebug_next_symbol_text (struct objfile *objfile) |
c906108c SS |
3826 | { |
3827 | SYMR sh; | |
3828 | ||
3829 | cur_sdx++; | |
3830 | (*debug_swap->swap_sym_in) (cur_bfd, | |
3831 | ((char *) debug_info->external_sym | |
3832 | + ((cur_fdr->isymBase + cur_sdx) | |
3833 | * debug_swap->external_sym_size)), | |
3834 | &sh); | |
3835 | return debug_info->ss + cur_fdr->issBase + sh.iss; | |
3836 | } | |
3837 | ||
3838 | /* Ancillary function to psymtab_to_symtab(). Does all the work | |
3839 | for turning the partial symtab PST into a symtab, recurring | |
3840 | first on all dependent psymtabs. The argument FILENAME is | |
3841 | only passed so we can see in debug stack traces what file | |
3842 | is being read. | |
3843 | ||
3844 | This function has a split personality, based on whether the | |
3845 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. | |
3846 | The flow of control and even the memory allocation differs. FIXME. */ | |
3847 | ||
3848 | static void | |
5c80ed9d TT |
3849 | psymtab_to_symtab_1 (struct objfile *objfile, |
3850 | struct partial_symtab *pst, const char *filename) | |
c906108c SS |
3851 | { |
3852 | bfd_size_type external_sym_size; | |
3853 | bfd_size_type external_pdr_size; | |
12b9c64f AO |
3854 | void (*swap_sym_in) (bfd *, void *, SYMR *); |
3855 | void (*swap_pdr_in) (bfd *, void *, PDR *); | |
c906108c | 3856 | int i; |
43f3e411 | 3857 | struct compunit_symtab *cust = NULL; |
c906108c SS |
3858 | FDR *fh; |
3859 | struct linetable *lines; | |
3860 | CORE_ADDR lowest_pdr_addr = 0; | |
16db6055 | 3861 | int last_symtab_ended = 0; |
18a94d75 | 3862 | struct section_offsets *section_offsets = objfile->section_offsets; |
c906108c SS |
3863 | |
3864 | if (pst->readin) | |
3865 | return; | |
3866 | pst->readin = 1; | |
3867 | ||
3868 | /* Read in all partial symbtabs on which this one is dependent. | |
3869 | NOTE that we do have circular dependencies, sigh. We solved | |
3870 | that by setting pst->readin before this point. */ | |
3871 | ||
3872 | for (i = 0; i < pst->number_of_dependencies; i++) | |
3873 | if (!pst->dependencies[i]->readin) | |
3874 | { | |
3875 | /* Inform about additional files to be read in. */ | |
3876 | if (info_verbose) | |
3877 | { | |
3878 | fputs_filtered (" ", gdb_stdout); | |
3879 | wrap_here (""); | |
3880 | fputs_filtered ("and ", gdb_stdout); | |
3881 | wrap_here (""); | |
3882 | printf_filtered ("%s...", | |
3883 | pst->dependencies[i]->filename); | |
3884 | wrap_here (""); /* Flush output */ | |
3885 | gdb_flush (gdb_stdout); | |
3886 | } | |
025bb325 | 3887 | /* We only pass the filename for debug purposes. */ |
5c80ed9d | 3888 | psymtab_to_symtab_1 (objfile, pst->dependencies[i], |
c906108c SS |
3889 | pst->dependencies[i]->filename); |
3890 | } | |
3891 | ||
3892 | /* Do nothing if this is a dummy psymtab. */ | |
3893 | ||
3894 | if (pst->n_global_syms == 0 && pst->n_static_syms == 0 | |
52948f01 | 3895 | && !pst->text_low_valid && !pst->text_high_valid) |
c906108c SS |
3896 | return; |
3897 | ||
025bb325 | 3898 | /* Now read the symbols for this symtab. */ |
c906108c SS |
3899 | |
3900 | cur_bfd = CUR_BFD (pst); | |
3901 | debug_swap = DEBUG_SWAP (pst); | |
3902 | debug_info = DEBUG_INFO (pst); | |
3903 | pending_list = PENDING_LIST (pst); | |
3904 | external_sym_size = debug_swap->external_sym_size; | |
3905 | external_pdr_size = debug_swap->external_pdr_size; | |
3906 | swap_sym_in = debug_swap->swap_sym_in; | |
3907 | swap_pdr_in = debug_swap->swap_pdr_in; | |
5c80ed9d | 3908 | mdebugread_objfile = objfile; |
c906108c SS |
3909 | cur_fd = FDR_IDX (pst); |
3910 | fh = ((cur_fd == -1) | |
cafb3438 | 3911 | ? NULL |
c906108c SS |
3912 | : debug_info->fdr + cur_fd); |
3913 | cur_fdr = fh; | |
3914 | ||
025bb325 | 3915 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ |
c906108c | 3916 | processing_gcc_compilation = 0; |
cafb3438 | 3917 | if (fh != NULL && fh->csym >= 2) |
c906108c SS |
3918 | { |
3919 | SYMR sh; | |
3920 | ||
3921 | (*swap_sym_in) (cur_bfd, | |
3922 | ((char *) debug_info->external_sym | |
3923 | + (fh->isymBase + 1) * external_sym_size), | |
3924 | &sh); | |
ee300cd4 AC |
3925 | if (strcmp (debug_info->ss + fh->issBase + sh.iss, |
3926 | stabs_symbol) == 0) | |
c906108c SS |
3927 | { |
3928 | /* We indicate that this is a GCC compilation so that certain | |
3929 | features will be enabled in stabsread/dbxread. */ | |
3930 | processing_gcc_compilation = 2; | |
3931 | } | |
3932 | } | |
3933 | ||
3934 | if (processing_gcc_compilation != 0) | |
3935 | { | |
5c80ed9d | 3936 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
3937 | |
3938 | /* This symbol table contains stabs-in-ecoff entries. */ | |
3939 | ||
025bb325 | 3940 | /* Parse local symbols first. */ |
c906108c | 3941 | |
025bb325 | 3942 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr. */ |
c906108c | 3943 | { |
dd707e8e | 3944 | mdebugread_objfile = NULL; |
c906108c SS |
3945 | return; |
3946 | } | |
3947 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
3948 | { | |
3949 | SYMR sh; | |
3950 | char *name; | |
3951 | CORE_ADDR valu; | |
3952 | ||
3953 | (*swap_sym_in) (cur_bfd, | |
3954 | (((char *) debug_info->external_sym) | |
3955 | + (fh->isymBase + cur_sdx) * external_sym_size), | |
3956 | &sh); | |
3957 | name = debug_info->ss + fh->issBase + sh.iss; | |
3958 | valu = sh.value; | |
3959 | /* XXX This is a hack. It will go away! */ | |
3960 | if (ECOFF_IS_STAB (&sh) || (name[0] == '#')) | |
3961 | { | |
3962 | int type_code = ECOFF_UNMARK_STAB (sh.index); | |
5ffa0793 | 3963 | enum language language = PST_PRIVATE (pst)->pst_language; |
c906108c SS |
3964 | |
3965 | /* We should never get non N_STAB symbols here, but they | |
c5aa993b JM |
3966 | should be harmless, so keep process_one_symbol from |
3967 | complaining about them. */ | |
c906108c SS |
3968 | if (type_code & N_STAB) |
3969 | { | |
16db6055 EZ |
3970 | /* If we found a trailing N_SO with no name, process |
3971 | it here instead of in process_one_symbol, so we | |
3972 | can keep a handle to its symtab. The symtab | |
3973 | would otherwise be ended twice, once in | |
025bb325 | 3974 | process_one_symbol, and once after this loop. */ |
16db6055 | 3975 | if (type_code == N_SO |
46212e0b | 3976 | && get_last_source_file () |
16db6055 EZ |
3977 | && previous_stab_code != (unsigned char) N_SO |
3978 | && *name == '\000') | |
3979 | { | |
18a94d75 | 3980 | valu += ANOFFSET (section_offsets, |
5c80ed9d | 3981 | SECT_OFF_TEXT (objfile)); |
16db6055 | 3982 | previous_stab_code = N_SO; |
43f3e411 | 3983 | cust = end_symtab (valu, SECT_OFF_TEXT (objfile)); |
16db6055 EZ |
3984 | end_stabs (); |
3985 | last_symtab_ended = 1; | |
3986 | } | |
3987 | else | |
3988 | { | |
3989 | last_symtab_ended = 0; | |
3990 | process_one_symbol (type_code, 0, valu, name, | |
5ffa0793 | 3991 | section_offsets, objfile, language); |
16db6055 | 3992 | } |
c906108c SS |
3993 | } |
3994 | /* Similarly a hack. */ | |
3995 | else if (name[0] == '#') | |
3996 | { | |
3997 | process_one_symbol (N_SLINE, 0, valu, name, | |
5ffa0793 | 3998 | section_offsets, objfile, language); |
c906108c SS |
3999 | } |
4000 | if (type_code == N_FUN) | |
4001 | { | |
4002 | /* Make up special symbol to contain | |
025bb325 | 4003 | procedure specific info. */ |
e39db4db SM |
4004 | mdebug_extra_func_info *e |
4005 | = OBSTACK_ZALLOC (&mdebugread_objfile->objfile_obstack, | |
4006 | mdebug_extra_func_info); | |
f92761ec | 4007 | struct symbol *s = new_symbol (MDEBUG_EFI_SYMBOL_NAME); |
c906108c | 4008 | |
176620f1 | 4009 | SYMBOL_DOMAIN (s) = LABEL_DOMAIN; |
f1e6e072 | 4010 | SYMBOL_ACLASS_INDEX (s) = LOC_CONST; |
5c80ed9d | 4011 | SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_void; |
9918cab9 | 4012 | SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e; |
c906108c | 4013 | e->pdr.framereg = -1; |
e148f09d | 4014 | add_symbol_to_list (s, get_local_symbols ()); |
c906108c SS |
4015 | } |
4016 | } | |
4017 | else if (sh.st == stLabel) | |
4018 | { | |
4019 | if (sh.index == indexNil) | |
4020 | { | |
4021 | /* This is what the gcc2_compiled and __gnu_compiled_* | |
4022 | show up as. So don't complain. */ | |
4023 | ; | |
4024 | } | |
4025 | else | |
4026 | { | |
025bb325 | 4027 | /* Handle encoded stab line number. */ |
18a94d75 | 4028 | valu += ANOFFSET (section_offsets, |
5c80ed9d | 4029 | SECT_OFF_TEXT (objfile)); |
3c65e5b3 | 4030 | record_line (get_current_subfile (), sh.index, |
fbf65064 | 4031 | gdbarch_addr_bits_remove (gdbarch, valu)); |
c906108c SS |
4032 | } |
4033 | } | |
4034 | else if (sh.st == stProc || sh.st == stStaticProc | |
4035 | || sh.st == stStatic || sh.st == stEnd) | |
025bb325 | 4036 | /* These are generated by gcc-2.x, do not complain. */ |
c906108c SS |
4037 | ; |
4038 | else | |
b98664d3 | 4039 | complaint (_("unknown stabs symbol %s"), name); |
c906108c | 4040 | } |
16db6055 EZ |
4041 | |
4042 | if (! last_symtab_ended) | |
4043 | { | |
79748972 | 4044 | cust = end_symtab (pst->raw_text_high (), SECT_OFF_TEXT (objfile)); |
16db6055 EZ |
4045 | end_stabs (); |
4046 | } | |
c906108c | 4047 | |
c906108c | 4048 | /* There used to be a call to sort_blocks here, but this should not |
c5aa993b JM |
4049 | be necessary for stabs symtabs. And as sort_blocks modifies the |
4050 | start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK, | |
4051 | it did the wrong thing if the first procedure in a file was | |
4052 | generated via asm statements. */ | |
c906108c SS |
4053 | |
4054 | /* Fill in procedure info next. */ | |
4055 | if (fh->cpd > 0) | |
4056 | { | |
c906108c SS |
4057 | char *pdr_ptr; |
4058 | char *pdr_end; | |
4059 | PDR *pdr_in; | |
4060 | PDR *pdr_in_end; | |
4061 | ||
633cf254 | 4062 | gdb::def_vector<PDR> pr_block (fh->cpd); |
c906108c SS |
4063 | |
4064 | pdr_ptr = ((char *) debug_info->external_pdr | |
4065 | + fh->ipdFirst * external_pdr_size); | |
4066 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
633cf254 | 4067 | pdr_in = pr_block.data (); |
c906108c SS |
4068 | for (; |
4069 | pdr_ptr < pdr_end; | |
4070 | pdr_ptr += external_pdr_size, pdr_in++) | |
4071 | { | |
4072 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4073 | ||
4074 | /* Determine lowest PDR address, the PDRs are not always | |
c5aa993b | 4075 | sorted. */ |
633cf254 | 4076 | if (pdr_in == pr_block.data ()) |
c906108c SS |
4077 | lowest_pdr_addr = pdr_in->adr; |
4078 | else if (pdr_in->adr < lowest_pdr_addr) | |
4079 | lowest_pdr_addr = pdr_in->adr; | |
4080 | } | |
4081 | ||
633cf254 | 4082 | pdr_in = pr_block.data (); |
c906108c SS |
4083 | pdr_in_end = pdr_in + fh->cpd; |
4084 | for (; pdr_in < pdr_in_end; pdr_in++) | |
43f3e411 | 4085 | parse_procedure (pdr_in, cust, pst); |
c906108c SS |
4086 | } |
4087 | } | |
4088 | else | |
4089 | { | |
4090 | /* This symbol table contains ordinary ecoff entries. */ | |
4091 | ||
30cc903e | 4092 | int maxlines, size; |
c906108c SS |
4093 | EXTR *ext_ptr; |
4094 | ||
c906108c SS |
4095 | if (fh == 0) |
4096 | { | |
4097 | maxlines = 0; | |
43f3e411 | 4098 | cust = new_symtab ("unknown", 0, objfile); |
c906108c SS |
4099 | } |
4100 | else | |
4101 | { | |
c906108c | 4102 | maxlines = 2 * fh->cline; |
43f3e411 | 4103 | cust = new_symtab (pst->filename, maxlines, objfile); |
c906108c SS |
4104 | |
4105 | /* The proper language was already determined when building | |
4106 | the psymtab, use it. */ | |
43f3e411 | 4107 | COMPUNIT_FILETABS (cust)->language = PST_PRIVATE (pst)->pst_language; |
c906108c SS |
4108 | } |
4109 | ||
43f3e411 | 4110 | psymtab_language = COMPUNIT_FILETABS (cust)->language; |
c906108c | 4111 | |
43f3e411 | 4112 | lines = SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust)); |
c906108c | 4113 | |
025bb325 | 4114 | /* Get a new lexical context. */ |
c906108c SS |
4115 | |
4116 | push_parse_stack (); | |
43f3e411 DE |
4117 | top_stack->cur_st = COMPUNIT_FILETABS (cust); |
4118 | top_stack->cur_block | |
4119 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), STATIC_BLOCK); | |
79748972 | 4120 | BLOCK_START (top_stack->cur_block) = pst->text_low (objfile); |
c906108c SS |
4121 | BLOCK_END (top_stack->cur_block) = 0; |
4122 | top_stack->blocktype = stFile; | |
c906108c SS |
4123 | top_stack->cur_type = 0; |
4124 | top_stack->procadr = 0; | |
4125 | top_stack->numargs = 0; | |
4126 | found_ecoff_debugging_info = 0; | |
4127 | ||
4128 | if (fh) | |
4129 | { | |
4130 | char *sym_ptr; | |
4131 | char *sym_end; | |
4132 | ||
025bb325 | 4133 | /* Parse local symbols first. */ |
c906108c SS |
4134 | sym_ptr = ((char *) debug_info->external_sym |
4135 | + fh->isymBase * external_sym_size); | |
4136 | sym_end = sym_ptr + fh->csym * external_sym_size; | |
4137 | while (sym_ptr < sym_end) | |
4138 | { | |
4139 | SYMR sh; | |
4140 | int c; | |
4141 | ||
4142 | (*swap_sym_in) (cur_bfd, sym_ptr, &sh); | |
4143 | c = parse_symbol (&sh, | |
4144 | debug_info->external_aux + fh->iauxBase, | |
3e43a32a | 4145 | sym_ptr, fh->fBigendian, |
18a94d75 | 4146 | section_offsets, objfile); |
c906108c SS |
4147 | sym_ptr += c * external_sym_size; |
4148 | } | |
4149 | ||
4150 | /* Linenumbers. At the end, check if we can save memory. | |
4151 | parse_lines has to look ahead an arbitrary number of PDR | |
4152 | structures, so we swap them all first. */ | |
4153 | if (fh->cpd > 0) | |
4154 | { | |
c906108c SS |
4155 | char *pdr_ptr; |
4156 | char *pdr_end; | |
4157 | PDR *pdr_in; | |
4158 | PDR *pdr_in_end; | |
4159 | ||
633cf254 | 4160 | gdb::def_vector<PDR> pr_block (fh->cpd); |
c906108c SS |
4161 | |
4162 | pdr_ptr = ((char *) debug_info->external_pdr | |
4163 | + fh->ipdFirst * external_pdr_size); | |
4164 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
633cf254 | 4165 | pdr_in = pr_block.data (); |
c906108c SS |
4166 | for (; |
4167 | pdr_ptr < pdr_end; | |
4168 | pdr_ptr += external_pdr_size, pdr_in++) | |
4169 | { | |
4170 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4171 | ||
4172 | /* Determine lowest PDR address, the PDRs are not always | |
4173 | sorted. */ | |
633cf254 | 4174 | if (pdr_in == pr_block.data ()) |
c906108c SS |
4175 | lowest_pdr_addr = pdr_in->adr; |
4176 | else if (pdr_in->adr < lowest_pdr_addr) | |
4177 | lowest_pdr_addr = pdr_in->adr; | |
4178 | } | |
4179 | ||
633cf254 | 4180 | parse_lines (fh, pr_block.data (), lines, maxlines, |
79748972 | 4181 | pst->text_low (objfile), lowest_pdr_addr); |
c906108c SS |
4182 | if (lines->nitems < fh->cline) |
4183 | lines = shrink_linetable (lines); | |
4184 | ||
4185 | /* Fill in procedure info next. */ | |
633cf254 | 4186 | pdr_in = pr_block.data (); |
c906108c SS |
4187 | pdr_in_end = pdr_in + fh->cpd; |
4188 | for (; pdr_in < pdr_in_end; pdr_in++) | |
43f3e411 | 4189 | parse_procedure (pdr_in, NULL, pst); |
c906108c SS |
4190 | } |
4191 | } | |
4192 | ||
30cc903e TT |
4193 | size = lines->nitems; |
4194 | if (size > 1) | |
4195 | --size; | |
43f3e411 | 4196 | SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust)) |
224c3ddb SM |
4197 | = ((struct linetable *) |
4198 | obstack_copy (&mdebugread_objfile->objfile_obstack, | |
4199 | lines, (sizeof (struct linetable) | |
4200 | + size * sizeof (lines->item)))); | |
30cc903e | 4201 | xfree (lines); |
c906108c SS |
4202 | |
4203 | /* .. and our share of externals. | |
025bb325 MS |
4204 | XXX use the global list to speed up things here. How? |
4205 | FIXME, Maybe quit once we have found the right number of ext's? */ | |
43f3e411 | 4206 | top_stack->cur_st = COMPUNIT_FILETABS (cust); |
3e43a32a | 4207 | top_stack->cur_block |
439247b6 | 4208 | = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack->cur_st), |
3e43a32a | 4209 | GLOBAL_BLOCK); |
c906108c | 4210 | top_stack->blocktype = stFile; |
c906108c SS |
4211 | |
4212 | ext_ptr = PST_PRIVATE (pst)->extern_tab; | |
4213 | for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) | |
3e43a32a | 4214 | parse_external (ext_ptr, fh->fBigendian, |
18a94d75 | 4215 | section_offsets, objfile); |
c906108c SS |
4216 | |
4217 | /* If there are undefined symbols, tell the user. | |
c5aa993b JM |
4218 | The alpha has an undefined symbol for every symbol that is |
4219 | from a shared library, so tell the user only if verbose is on. */ | |
c906108c SS |
4220 | if (info_verbose && n_undef_symbols) |
4221 | { | |
a3f17187 | 4222 | printf_filtered (_("File %s contains %d unresolved references:"), |
43f3e411 DE |
4223 | symtab_to_filename_for_display |
4224 | (COMPUNIT_FILETABS (cust)), | |
05cba821 | 4225 | n_undef_symbols); |
3e43a32a MS |
4226 | printf_filtered ("\n\t%4d variables\n\t%4d " |
4227 | "procedures\n\t%4d labels\n", | |
c906108c SS |
4228 | n_undef_vars, n_undef_procs, n_undef_labels); |
4229 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; | |
4230 | ||
4231 | } | |
4232 | pop_parse_stack (); | |
4233 | ||
43f3e411 | 4234 | sort_blocks (COMPUNIT_FILETABS (cust)); |
c906108c SS |
4235 | } |
4236 | ||
4237 | /* Now link the psymtab and the symtab. */ | |
43f3e411 | 4238 | pst->compunit_symtab = cust; |
c906108c | 4239 | |
dd707e8e | 4240 | mdebugread_objfile = NULL; |
c906108c SS |
4241 | } |
4242 | \f | |
025bb325 | 4243 | /* Ancillary parsing procedures. */ |
c906108c SS |
4244 | |
4245 | /* Return 1 if the symbol pointed to by SH has a cross reference | |
4246 | to an opaque aggregate type, else 0. */ | |
4247 | ||
4248 | static int | |
fba45db2 | 4249 | has_opaque_xref (FDR *fh, SYMR *sh) |
c906108c SS |
4250 | { |
4251 | TIR tir; | |
4252 | union aux_ext *ax; | |
4253 | RNDXR rn[1]; | |
4254 | unsigned int rf; | |
4255 | ||
4256 | if (sh->index == indexNil) | |
4257 | return 0; | |
4258 | ||
4259 | ax = debug_info->external_aux + fh->iauxBase + sh->index; | |
4260 | (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir); | |
4261 | if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum) | |
4262 | return 0; | |
4263 | ||
4264 | ax++; | |
4265 | (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn); | |
4266 | if (rn->rfd == 0xfff) | |
4267 | rf = AUX_GET_ISYM (fh->fBigendian, ax + 1); | |
4268 | else | |
4269 | rf = rn->rfd; | |
4270 | if (rf != -1) | |
4271 | return 0; | |
4272 | return 1; | |
4273 | } | |
4274 | ||
4275 | /* Lookup the type at relative index RN. Return it in TPP | |
4276 | if found and in any event come up with its name PNAME. | |
4277 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). | |
025bb325 | 4278 | Return value says how many aux symbols we ate. */ |
c906108c SS |
4279 | |
4280 | static int | |
3e43a32a MS |
4281 | cross_ref (int fd, union aux_ext *ax, struct type **tpp, |
4282 | enum type_code type_code, | |
025bb325 | 4283 | /* Use to alloc new type if none is found. */ |
a121b7c1 | 4284 | const char **pname, int bigend, const char *sym_name) |
c906108c SS |
4285 | { |
4286 | RNDXR rn[1]; | |
4287 | unsigned int rf; | |
4288 | int result = 1; | |
4289 | FDR *fh; | |
4290 | char *esh; | |
4291 | SYMR sh; | |
4292 | int xref_fd; | |
4293 | struct mdebug_pending *pend; | |
4294 | ||
be903358 | 4295 | *tpp = NULL; |
c906108c SS |
4296 | |
4297 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
4298 | ||
025bb325 | 4299 | /* Escape index means 'the next one'. */ |
c906108c SS |
4300 | if (rn->rfd == 0xfff) |
4301 | { | |
4302 | result++; | |
4303 | rf = AUX_GET_ISYM (bigend, ax + 1); | |
4304 | } | |
4305 | else | |
4306 | { | |
4307 | rf = rn->rfd; | |
4308 | } | |
4309 | ||
4310 | /* mips cc uses a rf of -1 for opaque struct definitions. | |
19f392bc | 4311 | Set TYPE_STUB for these types so that check_typedef will |
c906108c SS |
4312 | resolve them if the struct gets defined in another compilation unit. */ |
4313 | if (rf == -1) | |
4314 | { | |
4315 | *pname = "<undefined>"; | |
19f392bc UW |
4316 | *tpp = init_type (mdebugread_objfile, type_code, 0, NULL); |
4317 | TYPE_STUB (*tpp) = 1; | |
c906108c SS |
4318 | return result; |
4319 | } | |
4320 | ||
4321 | /* mips cc uses an escaped rn->index of 0 for struct return types | |
025bb325 | 4322 | of procedures that were compiled without -g. These will always remain |
c906108c SS |
4323 | undefined. */ |
4324 | if (rn->rfd == 0xfff && rn->index == 0) | |
4325 | { | |
4326 | *pname = "<undefined>"; | |
4327 | return result; | |
4328 | } | |
4329 | ||
4330 | /* Find the relative file descriptor and the symbol in it. */ | |
4331 | fh = get_rfd (fd, rf); | |
4332 | xref_fd = fh - debug_info->fdr; | |
4333 | ||
4334 | if (rn->index >= fh->csym) | |
4335 | { | |
4336 | /* File indirect entry is corrupt. */ | |
4337 | *pname = "<illegal>"; | |
23136709 | 4338 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4339 | return result; |
4340 | } | |
4341 | ||
4342 | /* If we have processed this symbol then we left a forwarding | |
4343 | pointer to the type in the pending list. If not, we`ll put | |
4344 | it in a list of pending types, to be processed later when | |
4345 | the file will be. In any event, we collect the name for the | |
4346 | type here. */ | |
4347 | ||
4348 | esh = ((char *) debug_info->external_sym | |
4349 | + ((fh->isymBase + rn->index) | |
4350 | * debug_swap->external_sym_size)); | |
4351 | (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh); | |
4352 | ||
4353 | /* Make sure that this type of cross reference can be handled. */ | |
4354 | if ((sh.sc != scInfo | |
4355 | || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect | |
4356 | && sh.st != stStruct && sh.st != stUnion | |
4357 | && sh.st != stEnum)) | |
c5aa993b | 4358 | && (sh.st != stBlock || !SC_IS_COMMON (sh.sc))) |
c906108c SS |
4359 | { |
4360 | /* File indirect entry is corrupt. */ | |
4361 | *pname = "<illegal>"; | |
23136709 | 4362 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4363 | return result; |
4364 | } | |
4365 | ||
4366 | *pname = debug_info->ss + fh->issBase + sh.iss; | |
4367 | ||
4368 | pend = is_pending_symbol (fh, esh); | |
4369 | if (pend) | |
4370 | *tpp = pend->t; | |
4371 | else | |
4372 | { | |
4373 | /* We have not yet seen this type. */ | |
4374 | ||
4375 | if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect) | |
4376 | { | |
4377 | TIR tir; | |
4378 | ||
4379 | /* alpha cc puts out a stTypedef with a sh.iss of zero for | |
4380 | two cases: | |
4381 | a) forward declarations of structs/unions/enums which are not | |
c5aa993b | 4382 | defined in this compilation unit. |
025bb325 | 4383 | For these the type will be void. This is a bad design decision |
c5aa993b JM |
4384 | as cross referencing across compilation units is impossible |
4385 | due to the missing name. | |
c906108c | 4386 | b) forward declarations of structs/unions/enums/typedefs which |
c5aa993b | 4387 | are defined later in this file or in another file in the same |
025bb325 | 4388 | compilation unit. Irix5 cc uses a stIndirect symbol for this. |
c5aa993b | 4389 | Simply cross reference those again to get the true type. |
c906108c SS |
4390 | The forward references are not entered in the pending list and |
4391 | in the symbol table. */ | |
4392 | ||
4393 | (*debug_swap->swap_tir_in) (bigend, | |
4394 | &(debug_info->external_aux | |
4395 | + fh->iauxBase + sh.index)->a_ti, | |
4396 | &tir); | |
4397 | if (tir.tq0 != tqNil) | |
b98664d3 | 4398 | complaint (_("illegal tq0 in forward typedef for %s"), sym_name); |
c906108c SS |
4399 | switch (tir.bt) |
4400 | { | |
4401 | case btVoid: | |
19f392bc | 4402 | *tpp = init_type (mdebugread_objfile, type_code, 0, NULL); |
c5aa993b | 4403 | *pname = "<undefined>"; |
c906108c SS |
4404 | break; |
4405 | ||
4406 | case btStruct: | |
4407 | case btUnion: | |
4408 | case btEnum: | |
4409 | cross_ref (xref_fd, | |
4410 | (debug_info->external_aux | |
4411 | + fh->iauxBase + sh.index + 1), | |
4412 | tpp, type_code, pname, | |
4413 | fh->fBigendian, sym_name); | |
4414 | break; | |
4415 | ||
4416 | case btTypedef: | |
025bb325 | 4417 | /* Follow a forward typedef. This might recursively |
c5aa993b JM |
4418 | call cross_ref till we get a non typedef'ed type. |
4419 | FIXME: This is not correct behaviour, but gdb currently | |
025bb325 | 4420 | cannot handle typedefs without type copying. Type |
c5aa993b JM |
4421 | copying is impossible as we might have mutual forward |
4422 | references between two files and the copied type would not | |
4423 | get filled in when we later parse its definition. */ | |
c906108c SS |
4424 | *tpp = parse_type (xref_fd, |
4425 | debug_info->external_aux + fh->iauxBase, | |
4426 | sh.index, | |
cafb3438 | 4427 | NULL, |
c906108c SS |
4428 | fh->fBigendian, |
4429 | debug_info->ss + fh->issBase + sh.iss); | |
4430 | add_pending (fh, esh, *tpp); | |
4431 | break; | |
4432 | ||
4433 | default: | |
b98664d3 | 4434 | complaint (_("illegal bt %d in forward typedef for %s"), tir.bt, |
23136709 | 4435 | sym_name); |
19f392bc | 4436 | *tpp = init_type (mdebugread_objfile, type_code, 0, NULL); |
c906108c SS |
4437 | break; |
4438 | } | |
4439 | return result; | |
4440 | } | |
4441 | else if (sh.st == stTypedef) | |
4442 | { | |
025bb325 | 4443 | /* Parse the type for a normal typedef. This might recursively call |
c906108c SS |
4444 | cross_ref till we get a non typedef'ed type. |
4445 | FIXME: This is not correct behaviour, but gdb currently | |
025bb325 | 4446 | cannot handle typedefs without type copying. But type copying is |
c906108c SS |
4447 | impossible as we might have mutual forward references between |
4448 | two files and the copied type would not get filled in when | |
4449 | we later parse its definition. */ | |
4450 | *tpp = parse_type (xref_fd, | |
4451 | debug_info->external_aux + fh->iauxBase, | |
4452 | sh.index, | |
cafb3438 | 4453 | NULL, |
c906108c SS |
4454 | fh->fBigendian, |
4455 | debug_info->ss + fh->issBase + sh.iss); | |
4456 | } | |
4457 | else | |
4458 | { | |
4459 | /* Cross reference to a struct/union/enum which is defined | |
4460 | in another file in the same compilation unit but that file | |
4461 | has not been parsed yet. | |
4462 | Initialize the type only, it will be filled in when | |
4463 | it's definition is parsed. */ | |
19f392bc | 4464 | *tpp = init_type (mdebugread_objfile, type_code, 0, NULL); |
c906108c SS |
4465 | } |
4466 | add_pending (fh, esh, *tpp); | |
4467 | } | |
4468 | ||
025bb325 | 4469 | /* We used one auxent normally, two if we got a "next one" rf. */ |
c906108c SS |
4470 | return result; |
4471 | } | |
4472 | ||
4473 | ||
4474 | /* Quick&dirty lookup procedure, to avoid the MI ones that require | |
025bb325 | 4475 | keeping the symtab sorted. */ |
c906108c SS |
4476 | |
4477 | static struct symbol * | |
a121b7c1 | 4478 | mylookup_symbol (const char *name, const struct block *block, |
fe978cb0 | 4479 | domain_enum domain, enum address_class theclass) |
c906108c | 4480 | { |
8157b174 | 4481 | struct block_iterator iter; |
de4f826b | 4482 | int inc; |
e88c90f2 | 4483 | struct symbol *sym; |
c906108c | 4484 | |
c906108c | 4485 | inc = name[0]; |
de4f826b | 4486 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
c906108c | 4487 | { |
3567439c | 4488 | if (SYMBOL_LINKAGE_NAME (sym)[0] == inc |
176620f1 | 4489 | && SYMBOL_DOMAIN (sym) == domain |
fe978cb0 | 4490 | && SYMBOL_CLASS (sym) == theclass |
3567439c | 4491 | && strcmp (SYMBOL_LINKAGE_NAME (sym), name) == 0) |
c906108c | 4492 | return sym; |
c906108c | 4493 | } |
e88c90f2 | 4494 | |
c906108c SS |
4495 | block = BLOCK_SUPERBLOCK (block); |
4496 | if (block) | |
fe978cb0 | 4497 | return mylookup_symbol (name, block, domain, theclass); |
c906108c SS |
4498 | return 0; |
4499 | } | |
4500 | ||
4501 | ||
de4f826b | 4502 | /* Add a new symbol S to a block B. */ |
c906108c SS |
4503 | |
4504 | static void | |
c7efd0b9 | 4505 | add_symbol (struct symbol *s, struct symtab *symtab, struct block *b) |
c906108c | 4506 | { |
08be3fe3 | 4507 | symbol_set_symtab (s, symtab); |
b026f593 | 4508 | mdict_add_symbol (BLOCK_MULTIDICT (b), s); |
c906108c SS |
4509 | } |
4510 | ||
025bb325 | 4511 | /* Add a new block B to a symtab S. */ |
c906108c SS |
4512 | |
4513 | static void | |
fba45db2 | 4514 | add_block (struct block *b, struct symtab *s) |
c906108c | 4515 | { |
346d1dfe TT |
4516 | /* Cast away "const", but that's ok because we're building the |
4517 | symtab and blockvector here. */ | |
439247b6 | 4518 | struct blockvector *bv = (struct blockvector *) SYMTAB_BLOCKVECTOR (s); |
c906108c | 4519 | |
12b9c64f | 4520 | bv = (struct blockvector *) xrealloc ((void *) bv, |
c906108c SS |
4521 | (sizeof (struct blockvector) |
4522 | + BLOCKVECTOR_NBLOCKS (bv) | |
4523 | * sizeof (bv->block))); | |
439247b6 DE |
4524 | if (bv != SYMTAB_BLOCKVECTOR (s)) |
4525 | SYMTAB_BLOCKVECTOR (s) = bv; | |
c906108c SS |
4526 | |
4527 | BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b; | |
4528 | } | |
4529 | ||
4530 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. | |
4531 | MIPS' linenumber encoding might need more than one byte | |
4532 | to describe it, LAST is used to detect these continuation lines. | |
4533 | ||
4534 | Combining lines with the same line number seems like a bad idea. | |
4535 | E.g: There could be a line number entry with the same line number after the | |
4536 | prologue and GDB should not ignore it (this is a better way to find | |
4537 | a prologue than mips_skip_prologue). | |
4538 | But due to the compressed line table format there are line number entries | |
4539 | for the same line which are needed to bridge the gap to the next | |
025bb325 | 4540 | line number entry. These entries have a bogus address info with them |
c906108c SS |
4541 | and we are unable to tell them from intended duplicate line number |
4542 | entries. | |
4543 | This is another reason why -ggdb debugging format is preferable. */ | |
4544 | ||
4545 | static int | |
fba45db2 | 4546 | add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last) |
c906108c SS |
4547 | { |
4548 | /* DEC c89 sometimes produces zero linenos which confuse gdb. | |
025bb325 | 4549 | Change them to something sensible. */ |
c906108c SS |
4550 | if (lineno == 0) |
4551 | lineno = 1; | |
4552 | if (last == 0) | |
025bb325 | 4553 | last = -2; /* Make sure we record first line. */ |
c906108c | 4554 | |
025bb325 | 4555 | if (last == lineno) /* Skip continuation lines. */ |
c906108c SS |
4556 | return lineno; |
4557 | ||
4558 | lt->item[lt->nitems].line = lineno; | |
4559 | lt->item[lt->nitems++].pc = adr << 2; | |
4560 | return lineno; | |
4561 | } | |
4562 | \f | |
025bb325 | 4563 | /* Sorting and reordering procedures. */ |
c906108c | 4564 | |
025bb325 | 4565 | /* Blocks with a smaller low bound should come first. */ |
c906108c SS |
4566 | |
4567 | static int | |
12b9c64f | 4568 | compare_blocks (const void *arg1, const void *arg2) |
c906108c | 4569 | { |
887432a5 | 4570 | LONGEST addr_diff; |
c906108c SS |
4571 | struct block **b1 = (struct block **) arg1; |
4572 | struct block **b2 = (struct block **) arg2; | |
4573 | ||
4574 | addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2))); | |
4575 | if (addr_diff == 0) | |
4576 | return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1))); | |
4577 | return addr_diff; | |
4578 | } | |
4579 | ||
4580 | /* Sort the blocks of a symtab S. | |
4581 | Reorder the blocks in the blockvector by code-address, | |
025bb325 | 4582 | as required by some MI search routines. */ |
c906108c SS |
4583 | |
4584 | static void | |
fba45db2 | 4585 | sort_blocks (struct symtab *s) |
c906108c | 4586 | { |
346d1dfe TT |
4587 | /* We have to cast away const here, but this is ok because we're |
4588 | constructing the blockvector in this code. */ | |
439247b6 | 4589 | struct blockvector *bv = (struct blockvector *) SYMTAB_BLOCKVECTOR (s); |
c906108c | 4590 | |
49323895 | 4591 | if (BLOCKVECTOR_NBLOCKS (bv) <= FIRST_LOCAL_BLOCK) |
c906108c SS |
4592 | { |
4593 | /* Cosmetic */ | |
4594 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0) | |
4595 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0; | |
4596 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0) | |
4597 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0; | |
4598 | return; | |
4599 | } | |
4600 | /* | |
4601 | * This is very unfortunate: normally all functions are compiled in | |
4602 | * the order they are found, but if the file is compiled -O3 things | |
4603 | * are very different. It would be nice to find a reliable test | |
4604 | * to detect -O3 images in advance. | |
4605 | */ | |
49323895 | 4606 | if (BLOCKVECTOR_NBLOCKS (bv) > FIRST_LOCAL_BLOCK + 1) |
c906108c SS |
4607 | qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK), |
4608 | BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK, | |
4609 | sizeof (struct block *), | |
4610 | compare_blocks); | |
4611 | ||
4612 | { | |
aa1ee363 AC |
4613 | CORE_ADDR high = 0; |
4614 | int i, j = BLOCKVECTOR_NBLOCKS (bv); | |
c906108c SS |
4615 | |
4616 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) | |
4617 | if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i))) | |
4618 | high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)); | |
4619 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high; | |
4620 | } | |
4621 | ||
4622 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = | |
4623 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK)); | |
4624 | ||
4625 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4626 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4627 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4628 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4629 | } | |
4630 | \f | |
4631 | ||
025bb325 | 4632 | /* Constructor/restructor/destructor procedures. */ |
c906108c | 4633 | |
de4f826b | 4634 | /* Allocate a new symtab for NAME. Needs an estimate of how many |
025bb325 | 4635 | linenumbers MAXLINES we'll put in it. */ |
c906108c | 4636 | |
43f3e411 | 4637 | static struct compunit_symtab * |
72b9f47f | 4638 | new_symtab (const char *name, int maxlines, struct objfile *objfile) |
c906108c | 4639 | { |
43f3e411 DE |
4640 | struct compunit_symtab *cust = allocate_compunit_symtab (objfile, name); |
4641 | struct symtab *symtab; | |
346d1dfe | 4642 | struct blockvector *bv; |
5ffa0793 | 4643 | enum language lang; |
c906108c | 4644 | |
43f3e411 DE |
4645 | add_compunit_symtab_to_objfile (cust); |
4646 | symtab = allocate_symtab (cust, name); | |
4647 | ||
4648 | SYMTAB_LINETABLE (symtab) = new_linetable (maxlines); | |
5ffa0793 | 4649 | lang = compunit_language (cust); |
c906108c | 4650 | |
025bb325 | 4651 | /* All symtabs must have at least two blocks. */ |
346d1dfe | 4652 | bv = new_bvect (2); |
5ffa0793 PA |
4653 | BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = new_block (NON_FUNCTION_BLOCK, lang); |
4654 | BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = new_block (NON_FUNCTION_BLOCK, lang); | |
346d1dfe TT |
4655 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = |
4656 | BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
43f3e411 | 4657 | COMPUNIT_BLOCKVECTOR (cust) = bv; |
c906108c | 4658 | |
43f3e411 DE |
4659 | COMPUNIT_DEBUGFORMAT (cust) = "ECOFF"; |
4660 | return cust; | |
c906108c SS |
4661 | } |
4662 | ||
025bb325 | 4663 | /* Allocate a new partial_symtab NAME. */ |
c906108c SS |
4664 | |
4665 | static struct partial_symtab * | |
a121b7c1 | 4666 | new_psymtab (const char *name, struct objfile *objfile) |
c906108c SS |
4667 | { |
4668 | struct partial_symtab *psymtab; | |
4669 | ||
4670 | psymtab = allocate_psymtab (name, objfile); | |
c906108c | 4671 | |
025bb325 | 4672 | /* Keep a backpointer to the file's symbols. */ |
c906108c | 4673 | |
e39db4db SM |
4674 | psymtab->read_symtab_private |
4675 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, symloc); | |
c906108c SS |
4676 | CUR_BFD (psymtab) = cur_bfd; |
4677 | DEBUG_SWAP (psymtab) = debug_swap; | |
4678 | DEBUG_INFO (psymtab) = debug_info; | |
4679 | PENDING_LIST (psymtab) = pending_list; | |
4680 | ||
025bb325 | 4681 | /* The way to turn this into a symtab is to call... */ |
257e7a09 | 4682 | psymtab->read_symtab = mdebug_read_symtab; |
c906108c SS |
4683 | return (psymtab); |
4684 | } | |
4685 | ||
4686 | ||
4687 | /* Allocate a linetable array of the given SIZE. Since the struct | |
4688 | already includes one item, we subtract one when calculating the | |
4689 | proper size to allocate. */ | |
4690 | ||
4691 | static struct linetable * | |
fba45db2 | 4692 | new_linetable (int size) |
c906108c SS |
4693 | { |
4694 | struct linetable *l; | |
4695 | ||
30cc903e TT |
4696 | if (size > 1) |
4697 | --size; | |
4698 | size = size * sizeof (l->item) + sizeof (struct linetable); | |
c906108c SS |
4699 | l = (struct linetable *) xmalloc (size); |
4700 | l->nitems = 0; | |
4701 | return l; | |
4702 | } | |
4703 | ||
025bb325 | 4704 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, |
c906108c SS |
4705 | I am not so sure about the 3.4 ones. |
4706 | ||
4707 | Since the struct linetable already includes one item, we subtract one when | |
4708 | calculating the proper size to allocate. */ | |
4709 | ||
4710 | static struct linetable * | |
fba45db2 | 4711 | shrink_linetable (struct linetable *lt) |
c906108c | 4712 | { |
12b9c64f | 4713 | return (struct linetable *) xrealloc ((void *) lt, |
c906108c SS |
4714 | (sizeof (struct linetable) |
4715 | + ((lt->nitems - 1) | |
4716 | * sizeof (lt->item)))); | |
4717 | } | |
4718 | ||
025bb325 | 4719 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ |
c906108c SS |
4720 | |
4721 | static struct blockvector * | |
fba45db2 | 4722 | new_bvect (int nblocks) |
c906108c SS |
4723 | { |
4724 | struct blockvector *bv; | |
4725 | int size; | |
4726 | ||
4727 | size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); | |
4728 | bv = (struct blockvector *) xzalloc (size); | |
4729 | ||
4730 | BLOCKVECTOR_NBLOCKS (bv) = nblocks; | |
4731 | ||
4732 | return bv; | |
4733 | } | |
4734 | ||
5ffa0793 | 4735 | /* Allocate and zero a new block of language LANGUAGE, and set its |
b026f593 | 4736 | BLOCK_MULTIDICT. If function is non-zero, assume the block is |
5ffa0793 PA |
4737 | associated to a function, and make sure that the symbols are stored |
4738 | linearly; otherwise, store them hashed. */ | |
c906108c SS |
4739 | |
4740 | static struct block * | |
5ffa0793 | 4741 | new_block (enum block_type type, enum language language) |
c906108c | 4742 | { |
a1632d59 DC |
4743 | /* FIXME: carlton/2003-09-11: This should use allocate_block to |
4744 | allocate the block. Which, in turn, suggests that the block | |
4745 | should be allocated on an obstack. */ | |
8d749320 | 4746 | struct block *retval = XCNEW (struct block); |
c906108c | 4747 | |
de4f826b | 4748 | if (type == FUNCTION_BLOCK) |
b026f593 | 4749 | BLOCK_MULTIDICT (retval) = mdict_create_linear_expandable (language); |
de4f826b | 4750 | else |
b026f593 | 4751 | BLOCK_MULTIDICT (retval) = mdict_create_hashed_expandable (language); |
c906108c | 4752 | |
de4f826b | 4753 | return retval; |
c906108c SS |
4754 | } |
4755 | ||
025bb325 | 4756 | /* Create a new symbol with printname NAME. */ |
c906108c SS |
4757 | |
4758 | static struct symbol * | |
a121b7c1 | 4759 | new_symbol (const char *name) |
c906108c | 4760 | { |
e623cf5d | 4761 | struct symbol *s = allocate_symbol (mdebugread_objfile); |
c906108c | 4762 | |
f85f34ed TT |
4763 | SYMBOL_SET_LANGUAGE (s, psymtab_language, |
4764 | &mdebugread_objfile->objfile_obstack); | |
dd707e8e | 4765 | SYMBOL_SET_NAMES (s, name, strlen (name), 1, mdebugread_objfile); |
c906108c SS |
4766 | return s; |
4767 | } | |
4768 | ||
025bb325 | 4769 | /* Create a new type with printname NAME. */ |
c906108c SS |
4770 | |
4771 | static struct type * | |
fba45db2 | 4772 | new_type (char *name) |
c906108c SS |
4773 | { |
4774 | struct type *t; | |
4775 | ||
dd707e8e | 4776 | t = alloc_type (mdebugread_objfile); |
c906108c | 4777 | TYPE_NAME (t) = name; |
b4ba55a1 | 4778 | INIT_CPLUS_SPECIFIC (t); |
c906108c SS |
4779 | return t; |
4780 | } | |
4781 | \f | |
4782 | /* Read ECOFF debugging information from a BFD section. This is | |
4783 | called from elfread.c. It parses the section into a | |
4784 | ecoff_debug_info struct, and then lets the rest of the file handle | |
4785 | it as normal. */ | |
4786 | ||
4787 | void | |
fba45db2 KB |
4788 | elfmdebug_build_psymtabs (struct objfile *objfile, |
4789 | const struct ecoff_debug_swap *swap, asection *sec) | |
c906108c SS |
4790 | { |
4791 | bfd *abfd = objfile->obfd; | |
4792 | struct ecoff_debug_info *info; | |
7134143f DJ |
4793 | |
4794 | /* FIXME: It's not clear whether we should be getting minimal symbol | |
4795 | information from .mdebug in an ELF file, or whether we will. | |
4796 | Re-initialize the minimal symbol reader in case we do. */ | |
4797 | ||
d25e8719 | 4798 | minimal_symbol_reader reader (objfile); |
c906108c | 4799 | |
e39db4db | 4800 | info = XOBNEW (&objfile->objfile_obstack, ecoff_debug_info); |
c906108c SS |
4801 | |
4802 | if (!(*swap->read_debug_info) (abfd, sec, info)) | |
8a3fe4f8 | 4803 | error (_("Error reading ECOFF debugging information: %s"), |
c906108c SS |
4804 | bfd_errmsg (bfd_get_error ())); |
4805 | ||
8dddcb8f | 4806 | mdebug_build_psymtabs (reader, objfile, swap, info); |
7134143f | 4807 | |
d25e8719 | 4808 | reader.install (); |
c906108c | 4809 | } |
c906108c SS |
4810 | |
4811 | void | |
fba45db2 | 4812 | _initialize_mdebugread (void) |
c906108c | 4813 | { |
f1e6e072 TT |
4814 | mdebug_register_index |
4815 | = register_symbol_register_impl (LOC_REGISTER, &mdebug_register_funcs); | |
4816 | mdebug_regparm_index | |
4817 | = register_symbol_register_impl (LOC_REGPARM_ADDR, &mdebug_register_funcs); | |
c906108c | 4818 | } |