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c906108c | 1 | /* Read a symbol table in ECOFF format (Third-Eye). |
ee300cd4 | 2 | |
213516ef | 3 | Copyright (C) 1986-2023 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" |
bf31fd38 | 48 | #include "gdbsupport/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> |
b7cadd86 | 58 | #include "psymtab.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 | |
39ef2f62 CB |
71 | #include <algorithm> |
72 | ||
025bb325 | 73 | /* Provide a way to test if we have both ECOFF and ELF symbol tables. |
c906108c SS |
74 | We use this define in order to know whether we should override a |
75 | symbol's ECOFF section with its ELF section. This is necessary in | |
76 | case the symbol's ELF section could not be represented in ECOFF. */ | |
77 | #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
78 | && bfd_get_section_by_name (bfd, ".mdebug") != NULL) | |
91a81f69 TT |
79 | |
80 | /* The objfile we are currently reading. */ | |
81 | ||
dd707e8e | 82 | static struct objfile *mdebugread_objfile; |
91a81f69 | 83 | |
c906108c | 84 | \f |
c5aa993b | 85 | |
c906108c SS |
86 | /* We put a pointer to this structure in the read_symtab_private field |
87 | of the psymtab. */ | |
88 | ||
77845a9a | 89 | struct md_symloc |
c5aa993b JM |
90 | { |
91 | /* Index of the FDR that this psymtab represents. */ | |
92 | int fdr_idx; | |
93 | /* The BFD that the psymtab was created from. */ | |
94 | bfd *cur_bfd; | |
95 | const struct ecoff_debug_swap *debug_swap; | |
96 | struct ecoff_debug_info *debug_info; | |
97 | struct mdebug_pending **pending_list; | |
98 | /* Pointer to external symbols for this file. */ | |
99 | EXTR *extern_tab; | |
100 | /* Size of extern_tab. */ | |
101 | int extern_count; | |
102 | enum language pst_language; | |
103 | }; | |
c906108c | 104 | |
77845a9a | 105 | #define PST_PRIVATE(p) ((struct md_symloc *)(p)->read_symtab_private) |
c906108c SS |
106 | #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx) |
107 | #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd) | |
108 | #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap) | |
109 | #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info) | |
110 | #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list) | |
111 | ||
112 | #define SC_IS_TEXT(sc) ((sc) == scText \ | |
113 | || (sc) == scRConst \ | |
dda83cd7 SM |
114 | || (sc) == scInit \ |
115 | || (sc) == scFini) | |
c906108c SS |
116 | #define SC_IS_DATA(sc) ((sc) == scData \ |
117 | || (sc) == scSData \ | |
118 | || (sc) == scRData \ | |
119 | || (sc) == scPData \ | |
120 | || (sc) == scXData) | |
121 | #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon) | |
0e931cf0 JB |
122 | #define SC_IS_BSS(sc) ((sc) == scBss) |
123 | #define SC_IS_SBSS(sc) ((sc) == scSBss) | |
c906108c | 124 | #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined) |
c906108c | 125 | \f |
025bb325 | 126 | /* Various complaints about symbol reading that don't abort the process. */ |
23136709 KB |
127 | static void |
128 | index_complaint (const char *arg1) | |
129 | { | |
b98664d3 | 130 | complaint (_("bad aux index at symbol %s"), arg1); |
23136709 | 131 | } |
c906108c | 132 | |
23136709 KB |
133 | static void |
134 | unknown_ext_complaint (const char *arg1) | |
135 | { | |
b98664d3 | 136 | complaint (_("unknown external symbol %s"), arg1); |
23136709 | 137 | } |
c906108c | 138 | |
23136709 KB |
139 | static void |
140 | basic_type_complaint (int arg1, const char *arg2) | |
141 | { | |
b98664d3 | 142 | complaint (_("cannot map ECOFF basic type 0x%x for %s"), |
23136709 KB |
143 | arg1, arg2); |
144 | } | |
c906108c | 145 | |
23136709 KB |
146 | static void |
147 | bad_tag_guess_complaint (const char *arg1) | |
148 | { | |
b98664d3 | 149 | complaint (_("guessed tag type of %s incorrectly"), arg1); |
23136709 | 150 | } |
c906108c | 151 | |
23136709 KB |
152 | static void |
153 | bad_rfd_entry_complaint (const char *arg1, int arg2, int arg3) | |
154 | { | |
b98664d3 | 155 | complaint (_("bad rfd entry for %s: file %d, index %d"), |
23136709 KB |
156 | arg1, arg2, arg3); |
157 | } | |
c906108c | 158 | |
23136709 KB |
159 | static void |
160 | unexpected_type_code_complaint (const char *arg1) | |
161 | { | |
b98664d3 | 162 | complaint (_("unexpected type code for %s"), arg1); |
23136709 | 163 | } |
c906108c | 164 | |
025bb325 | 165 | /* Macros and extra defs. */ |
c906108c | 166 | |
025bb325 | 167 | /* Puns: hard to find whether -g was used and how. */ |
c906108c SS |
168 | |
169 | #define MIN_GLEVEL GLEVEL_0 | |
170 | #define compare_glevel(a,b) \ | |
171 | (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \ | |
172 | ((b) == GLEVEL_3) ? -1 : (int)((b) - (a))) | |
173 | \f | |
025bb325 | 174 | /* Things that really are local to this module. */ |
c906108c | 175 | |
025bb325 | 176 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
177 | |
178 | static enum language psymtab_language = language_unknown; | |
179 | ||
180 | /* Current BFD. */ | |
181 | ||
182 | static bfd *cur_bfd; | |
183 | ||
184 | /* How to parse debugging information for CUR_BFD. */ | |
185 | ||
186 | static const struct ecoff_debug_swap *debug_swap; | |
187 | ||
188 | /* Pointers to debugging information for CUR_BFD. */ | |
189 | ||
190 | static struct ecoff_debug_info *debug_info; | |
191 | ||
405feb71 | 192 | /* Pointer to current file descriptor record, and its index. */ |
c906108c SS |
193 | |
194 | static FDR *cur_fdr; | |
195 | static int cur_fd; | |
196 | ||
025bb325 | 197 | /* Index of current symbol. */ |
c906108c SS |
198 | |
199 | static int cur_sdx; | |
200 | ||
201 | /* Note how much "debuggable" this image is. We would like | |
025bb325 | 202 | to see at least one FDR with full symbols. */ |
c906108c SS |
203 | |
204 | static int max_gdbinfo; | |
205 | static int max_glevel; | |
206 | ||
025bb325 | 207 | /* When examining .o files, report on undefined symbols. */ |
c906108c SS |
208 | |
209 | static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs; | |
210 | ||
211 | /* Pseudo symbol to use when putting stabs into the symbol table. */ | |
212 | ||
213 | static char stabs_symbol[] = STABS_SYMBOL; | |
214 | ||
c906108c SS |
215 | /* Nonzero if we have seen ecoff debugging info for a file. */ |
216 | ||
217 | static int found_ecoff_debugging_info; | |
218 | ||
025bb325 | 219 | /* Forward declarations. */ |
c906108c | 220 | |
12b9c64f | 221 | static int upgrade_type (int, struct type **, int, union aux_ext *, |
a121b7c1 | 222 | int, const char *); |
c906108c | 223 | |
8dddcb8f | 224 | static void parse_partial_symbols (minimal_symbol_reader &, |
7e9c0476 | 225 | psymtab_storage *, |
8dddcb8f | 226 | struct objfile *); |
c906108c | 227 | |
a14ed312 | 228 | static int has_opaque_xref (FDR *, SYMR *); |
c906108c | 229 | |
12b9c64f | 230 | static int cross_ref (int, union aux_ext *, struct type **, enum type_code, |
a121b7c1 | 231 | const char **, int, const char *); |
c906108c | 232 | |
a121b7c1 | 233 | static struct symbol *new_symbol (const char *); |
c906108c | 234 | |
a14ed312 | 235 | static struct type *new_type (char *); |
c906108c | 236 | |
de4f826b | 237 | enum block_type { FUNCTION_BLOCK, NON_FUNCTION_BLOCK }; |
c906108c | 238 | |
69fb3874 TT |
239 | static struct block *new_block (struct objfile *objfile, |
240 | enum block_type, enum language); | |
de4f826b | 241 | |
43f3e411 | 242 | static struct compunit_symtab *new_symtab (const char *, int, struct objfile *); |
c906108c | 243 | |
a14ed312 | 244 | static struct linetable *new_linetable (int); |
c906108c | 245 | |
a14ed312 | 246 | static struct blockvector *new_bvect (int); |
c906108c | 247 | |
a14ed312 | 248 | static struct type *parse_type (int, union aux_ext *, unsigned int, int *, |
a121b7c1 | 249 | int, const char *); |
c906108c | 250 | |
a121b7c1 | 251 | static struct symbol *mylookup_symbol (const char *, const struct block *, |
3977b71f | 252 | domain_enum, enum address_class); |
c906108c | 253 | |
a14ed312 | 254 | static void sort_blocks (struct symtab *); |
c906108c | 255 | |
7b249e47 TT |
256 | static legacy_psymtab *new_psymtab (const char *, psymtab_storage *, |
257 | struct objfile *); | |
c906108c | 258 | |
69b037c3 SM |
259 | static void mdebug_expand_psymtab (legacy_psymtab *pst, |
260 | struct objfile *objfile); | |
c906108c | 261 | |
a14ed312 | 262 | static void add_block (struct block *, struct symtab *); |
c906108c | 263 | |
c7efd0b9 | 264 | static void add_symbol (struct symbol *, struct symtab *, struct block *); |
c906108c | 265 | |
a14ed312 | 266 | static int add_line (struct linetable *, int, CORE_ADDR, int); |
c906108c | 267 | |
a14ed312 | 268 | static struct linetable *shrink_linetable (struct linetable *); |
c906108c | 269 | |
7b249e47 TT |
270 | static void handle_psymbol_enumerators (struct objfile *, psymtab_storage *, |
271 | partial_symtab *, | |
932539d7 | 272 | FDR *, int, CORE_ADDR); |
c906108c | 273 | |
a121b7c1 | 274 | static const char *mdebug_next_symbol_text (struct objfile *); |
c906108c | 275 | \f |
257e7a09 YQ |
276 | /* Exported procedure: Builds a symtab from the partial symtab SELF. |
277 | Restores the environment in effect when SELF was created, delegates | |
c906108c | 278 | most of the work to an ancillary procedure, and sorts |
257e7a09 | 279 | and reorders the symtab list at the end. SELF is not NULL. */ |
c906108c SS |
280 | |
281 | static void | |
891813be | 282 | mdebug_read_symtab (legacy_psymtab *self, struct objfile *objfile) |
c906108c | 283 | { |
c906108c SS |
284 | next_symbol_text_func = mdebug_next_symbol_text; |
285 | ||
8566b89b | 286 | self->expand_psymtab (objfile); |
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 | \f | |
025bb325 | 293 | /* File-level interface functions. */ |
c906108c | 294 | |
025bb325 | 295 | /* Find a file descriptor given its index RF relative to a file CF. */ |
c906108c SS |
296 | |
297 | static FDR * | |
fba45db2 | 298 | get_rfd (int cf, int rf) |
c906108c SS |
299 | { |
300 | FDR *fdrs; | |
52f0bd74 | 301 | FDR *f; |
c906108c SS |
302 | RFDT rfd; |
303 | ||
304 | fdrs = debug_info->fdr; | |
305 | f = fdrs + cf; | |
025bb325 | 306 | /* Object files do not have the RFD table, all refs are absolute. */ |
c906108c SS |
307 | if (f->rfdBase == 0) |
308 | return fdrs + rf; | |
309 | (*debug_swap->swap_rfd_in) (cur_bfd, | |
c5aa993b JM |
310 | ((char *) debug_info->external_rfd |
311 | + ((f->rfdBase + rf) | |
312 | * debug_swap->external_rfd_size)), | |
313 | &rfd); | |
c906108c SS |
314 | return fdrs + rfd; |
315 | } | |
316 | ||
025bb325 | 317 | /* Return a safer print NAME for a file descriptor. */ |
c906108c | 318 | |
a121b7c1 | 319 | static const char * |
fba45db2 | 320 | fdr_name (FDR *f) |
c906108c SS |
321 | { |
322 | if (f->rss == -1) | |
323 | return "<stripped file>"; | |
324 | if (f->rss == 0) | |
325 | return "<NFY>"; | |
326 | return debug_info->ss + f->issBase + f->rss; | |
327 | } | |
328 | ||
329 | ||
330 | /* Read in and parse the symtab of the file OBJFILE. Symbols from | |
331 | different sections are relocated via the SECTION_OFFSETS. */ | |
332 | ||
333 | void | |
8dddcb8f TT |
334 | mdebug_build_psymtabs (minimal_symbol_reader &reader, |
335 | struct objfile *objfile, | |
fba45db2 KB |
336 | const struct ecoff_debug_swap *swap, |
337 | struct ecoff_debug_info *info) | |
c906108c | 338 | { |
98badbfd | 339 | cur_bfd = objfile->obfd.get (); |
c906108c SS |
340 | debug_swap = swap; |
341 | debug_info = info; | |
342 | ||
d3d55eeb | 343 | stabsread_new_init (); |
d3d55eeb EZ |
344 | free_header_files (); |
345 | init_header_files (); | |
dda83cd7 | 346 | |
c906108c | 347 | /* Make sure all the FDR information is swapped in. */ |
cafb3438 | 348 | if (info->fdr == NULL) |
c906108c SS |
349 | { |
350 | char *fdr_src; | |
351 | char *fdr_end; | |
352 | FDR *fdr_ptr; | |
353 | ||
e39db4db SM |
354 | info->fdr = (FDR *) XOBNEWVEC (&objfile->objfile_obstack, FDR, |
355 | info->symbolic_header.ifdMax); | |
19ba03f4 | 356 | fdr_src = (char *) info->external_fdr; |
c906108c SS |
357 | fdr_end = (fdr_src |
358 | + info->symbolic_header.ifdMax * swap->external_fdr_size); | |
359 | fdr_ptr = info->fdr; | |
360 | for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++) | |
98badbfd | 361 | (*swap->swap_fdr_in) (objfile->obfd.get (), fdr_src, fdr_ptr); |
c906108c SS |
362 | } |
363 | ||
eb36a3eb TT |
364 | psymbol_functions *psf = new psymbol_functions (); |
365 | psymtab_storage *partial_symtabs = psf->get_partial_symtabs ().get (); | |
366 | objfile->qf.emplace_front (psf); | |
7e9c0476 | 367 | parse_partial_symbols (reader, partial_symtabs, 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) | |
6cb06a8c TT |
375 | gdb_printf (_("\n%s not compiled with -g, " |
376 | "debugging support is limited.\n"), | |
377 | objfile->name); | |
378 | gdb_printf (_("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 | { | |
5e97696c AB |
390 | legacy_psymtab *pst = nullptr; /* the psymtab proper */ |
391 | long n_globals = 0; /* exported globals (external symbols) */ | |
392 | long globals_offset = 0; /* cumulative */ | |
c906108c SS |
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"), |
dda83cd7 | 522 | regnum, num_regs - 1, sym); |
0fde2c53 DE |
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 | { | |
4aeddc50 | 537 | int regno = gdbarch_ecoff_reg_to_regnum (gdbarch, sym->value_longest ()); |
0fde2c53 | 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), |
987012b8 | 542 | sym->print_name ()); |
0fde2c53 DE |
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 | 565 | { |
6c9c307c | 566 | s->set_domain (VAR_DOMAIN); |
ba44b1a3 | 567 | s->set_aclass_index (aclass_index); |
d2242e34 PA |
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) | |
a8ed3dde | 573 | s->set_type (builtin_type (objfile)->nodebug_data_symbol); |
d2242e34 | 574 | else |
5f9c5a63 | 575 | s->set_type (parse_type (cur_fd, ax, sh->index, 0, bigend, name)); |
d2242e34 PA |
576 | /* Value of a data symbol is its memory address. */ |
577 | } | |
578 | ||
c906108c | 579 | static int |
fba45db2 | 580 | parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend, |
6a053cb1 | 581 | const section_offsets §ion_offsets, struct objfile *objfile) |
c906108c | 582 | { |
08feed99 | 583 | struct gdbarch *gdbarch = objfile->arch (); |
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 | ||
b8a6e987 | 601 | int section_index = -1; |
c906108c SS |
602 | switch (sh->sc) |
603 | { | |
604 | case scText: | |
605 | case scRConst: | |
606 | /* Do not relocate relative values. | |
dda83cd7 SM |
607 | The value of a stEnd symbol is the displacement from the |
608 | corresponding start symbol value. | |
609 | The value of a stBlock symbol is the displacement from the | |
610 | procedure address. */ | |
c906108c | 611 | if (sh->st != stEnd && sh->st != stBlock) |
b8a6e987 | 612 | section_index = SECT_OFF_TEXT (objfile); |
c906108c SS |
613 | break; |
614 | case scData: | |
615 | case scSData: | |
616 | case scRData: | |
617 | case scPData: | |
618 | case scXData: | |
b8a6e987 | 619 | section_index = SECT_OFF_DATA (objfile); |
c906108c SS |
620 | break; |
621 | case scBss: | |
622 | case scSBss: | |
b8a6e987 | 623 | section_index = SECT_OFF_BSS (objfile); |
c906108c SS |
624 | break; |
625 | } | |
626 | ||
b8a6e987 TT |
627 | if (section_index != -1) |
628 | sh->value += section_offsets[section_index]; | |
629 | ||
c906108c SS |
630 | switch (sh->st) |
631 | { | |
632 | case stNil: | |
633 | break; | |
634 | ||
025bb325 | 635 | case stGlobal: /* External symbol, goes into global block. */ |
63d609de | 636 | b = top_stack->cur_st->compunit ()->blockvector ()->global_block (); |
c906108c | 637 | s = new_symbol (name); |
b8a6e987 | 638 | s->set_section_index (section_index); |
4aeddc50 | 639 | s->set_value_address (sh->value); |
d2242e34 PA |
640 | add_data_symbol (sh, ax, bigend, s, LOC_STATIC, b, objfile, name); |
641 | break; | |
c906108c | 642 | |
025bb325 | 643 | case stStatic: /* Static data, goes into current block. */ |
c906108c SS |
644 | b = top_stack->cur_block; |
645 | s = new_symbol (name); | |
c5aa993b | 646 | if (SC_IS_COMMON (sh->sc)) |
c906108c SS |
647 | { |
648 | /* It is a FORTRAN common block. At least for SGI Fortran the | |
649 | address is not in the symbol; we need to fix it later in | |
650 | scan_file_globals. */ | |
987012b8 | 651 | int bucket = hashname (s->linkage_name ()); |
4aeddc50 | 652 | s->set_value_chain (global_sym_chain[bucket]); |
c906108c SS |
653 | global_sym_chain[bucket] = s; |
654 | } | |
655 | else | |
b8a6e987 TT |
656 | { |
657 | s->set_section_index (section_index); | |
658 | s->set_value_address (sh->value); | |
659 | } | |
d2242e34 PA |
660 | add_data_symbol (sh, ax, bigend, s, LOC_STATIC, b, objfile, name); |
661 | break; | |
c906108c | 662 | |
025bb325 | 663 | case stLocal: /* Local variable, goes into current block. */ |
768a979c UW |
664 | b = top_stack->cur_block; |
665 | s = new_symbol (name); | |
4aeddc50 | 666 | s->set_value_longest (svalue); |
c906108c | 667 | if (sh->sc == scRegister) |
d2242e34 PA |
668 | add_data_symbol (sh, ax, bigend, s, mdebug_register_index, |
669 | b, objfile, name); | |
c906108c | 670 | else |
d2242e34 PA |
671 | add_data_symbol (sh, ax, bigend, s, LOC_LOCAL, |
672 | b, objfile, name); | |
c906108c SS |
673 | break; |
674 | ||
025bb325 MS |
675 | case stParam: /* Arg to procedure, goes into current |
676 | block. */ | |
c906108c SS |
677 | max_gdbinfo++; |
678 | found_ecoff_debugging_info = 1; | |
679 | top_stack->numargs++; | |
680 | ||
681 | /* Special GNU C++ name. */ | |
682 | if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0) | |
025bb325 | 683 | name = "this"; /* FIXME, not alloc'd in obstack. */ |
c906108c SS |
684 | s = new_symbol (name); |
685 | ||
6c9c307c | 686 | s->set_domain (VAR_DOMAIN); |
d9743061 | 687 | s->set_is_argument (1); |
c906108c SS |
688 | switch (sh->sc) |
689 | { | |
690 | case scRegister: | |
691 | /* Pass by value in register. */ | |
ba44b1a3 | 692 | s->set_aclass_index (mdebug_register_index); |
c906108c SS |
693 | break; |
694 | case scVar: | |
695 | /* Pass by reference on stack. */ | |
ba44b1a3 | 696 | s->set_aclass_index (LOC_REF_ARG); |
c906108c SS |
697 | break; |
698 | case scVarRegister: | |
699 | /* Pass by reference in register. */ | |
ba44b1a3 | 700 | s->set_aclass_index (mdebug_regparm_index); |
c906108c SS |
701 | break; |
702 | default: | |
703 | /* Pass by value on stack. */ | |
ba44b1a3 | 704 | s->set_aclass_index (LOC_ARG); |
c906108c SS |
705 | break; |
706 | } | |
4aeddc50 | 707 | s->set_value_longest (svalue); |
5f9c5a63 | 708 | s->set_type (parse_type (cur_fd, ax, sh->index, 0, bigend, name)); |
c7efd0b9 | 709 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
710 | break; |
711 | ||
025bb325 | 712 | case stLabel: /* label, goes into current block. */ |
c906108c | 713 | s = new_symbol (name); |
6c9c307c | 714 | s->set_domain (VAR_DOMAIN); /* So that it can be used */ |
ba44b1a3 | 715 | s->set_aclass_index (LOC_LABEL); /* but not misused. */ |
b8a6e987 | 716 | s->set_section_index (section_index); |
4aeddc50 | 717 | s->set_value_address (sh->value); |
a8ed3dde | 718 | s->set_type (builtin_type (objfile)->builtin_int); |
c7efd0b9 | 719 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
720 | break; |
721 | ||
025bb325 MS |
722 | case stProc: /* Procedure, usually goes into global block. */ |
723 | case stStaticProc: /* Static procedure, goes into current block. */ | |
1fb4c65b | 724 | /* For stProc symbol records, we need to check the storage class |
dda83cd7 SM |
725 | as well, as only (stProc, scText) entries represent "real" |
726 | procedures - See the Compaq document titled "Object File / | |
727 | Symbol Table Format Specification" for more information. | |
728 | If the storage class is not scText, we discard the whole block | |
729 | of symbol records for this stProc. */ | |
1fb4c65b | 730 | if (sh->st == stProc && sh->sc != scText) |
dda83cd7 SM |
731 | { |
732 | char *ext_tsym = ext_sh; | |
733 | int keep_counting = 1; | |
734 | SYMR tsym; | |
735 | ||
736 | while (keep_counting) | |
737 | { | |
738 | ext_tsym += external_sym_size; | |
739 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
740 | count++; | |
741 | switch (tsym.st) | |
742 | { | |
743 | case stParam: | |
744 | break; | |
745 | case stEnd: | |
746 | keep_counting = 0; | |
747 | break; | |
748 | default: | |
749 | complaint (_("unknown symbol type 0x%x"), sh->st); | |
750 | break; | |
751 | } | |
752 | } | |
753 | break; | |
754 | } | |
c906108c | 755 | s = new_symbol (name); |
6c9c307c | 756 | s->set_domain (VAR_DOMAIN); |
ba44b1a3 | 757 | s->set_aclass_index (LOC_BLOCK); |
b8a6e987 | 758 | s->set_section_index (section_index); |
025bb325 | 759 | /* Type of the return value. */ |
c5aa993b | 760 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
a8ed3dde | 761 | t = builtin_type (objfile)->builtin_int; |
c906108c SS |
762 | else |
763 | { | |
764 | t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name); | |
ee300cd4 | 765 | if (strcmp (name, "malloc") == 0 |
78134374 | 766 | && t->code () == TYPE_CODE_VOID) |
c906108c SS |
767 | { |
768 | /* I don't know why, but, at least under Alpha GNU/Linux, | |
dda83cd7 SM |
769 | when linking against a malloc without debugging |
770 | symbols, its read as a function returning void---this | |
771 | is bad because it means we cannot call functions with | |
772 | string arguments interactively; i.e., "call | |
773 | printf("howdy\n")" would fail with the error message | |
774 | "program has no memory available". To avoid this, we | |
775 | patch up the type and make it void* | |
776 | instead. (davidm@azstarnet.com). */ | |
c906108c SS |
777 | t = make_pointer_type (t, NULL); |
778 | } | |
779 | } | |
780 | b = top_stack->cur_block; | |
781 | if (sh->st == stProc) | |
782 | { | |
63d609de | 783 | struct blockvector *bv |
44281e6c | 784 | = top_stack->cur_st->compunit ()->blockvector (); |
b8d56208 | 785 | |
c906108c SS |
786 | /* The next test should normally be true, but provides a |
787 | hook for nested functions (which we don't want to make | |
28397f59 | 788 | global). */ |
63d609de SM |
789 | if (b == bv->static_block ()) |
790 | b = bv->global_block (); | |
c906108c SS |
791 | /* Irix 5 sometimes has duplicate names for the same |
792 | function. We want to add such names up at the global | |
793 | level, not as a nested function. */ | |
794 | else if (sh->value == top_stack->procadr) | |
63d609de | 795 | b = bv->global_block (); |
c906108c | 796 | } |
c7efd0b9 | 797 | add_symbol (s, top_stack->cur_st, b); |
c906108c | 798 | |
025bb325 | 799 | /* Make a type for the procedure itself. */ |
5f9c5a63 | 800 | s->set_type (lookup_function_type (t)); |
c906108c | 801 | |
1e698235 | 802 | /* All functions in C++ have prototypes. For C we don't have enough |
dda83cd7 | 803 | information in the debug info. */ |
c1b5c1eb | 804 | if (s->language () == language_cplus) |
5f9c5a63 | 805 | s->type ()->set_is_prototyped (true); |
1e698235 | 806 | |
025bb325 | 807 | /* Create and enter a new lexical context. */ |
69fb3874 | 808 | b = new_block (objfile, FUNCTION_BLOCK, s->language ()); |
4aeddc50 | 809 | s->set_value_block (b); |
6c00f721 | 810 | b->set_function (s); |
4b8791e1 SM |
811 | b->set_start (sh->value); |
812 | b->set_end (sh->value); | |
f135fe72 | 813 | b->set_superblock (top_stack->cur_block); |
c906108c SS |
814 | add_block (b, top_stack->cur_st); |
815 | ||
025bb325 | 816 | /* Not if we only have partial info. */ |
c5aa993b | 817 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
818 | break; |
819 | ||
820 | push_parse_stack (); | |
821 | top_stack->cur_block = b; | |
822 | top_stack->blocktype = sh->st; | |
5f9c5a63 | 823 | top_stack->cur_type = s->type (); |
c906108c SS |
824 | top_stack->cur_field = -1; |
825 | top_stack->procadr = sh->value; | |
826 | top_stack->numargs = 0; | |
827 | break; | |
828 | ||
829 | /* Beginning of code for structure, union, and enum definitions. | |
dda83cd7 | 830 | They all share a common set of local variables, defined here. */ |
c906108c SS |
831 | { |
832 | enum type_code type_code; | |
833 | char *ext_tsym; | |
834 | int nfields; | |
835 | long max_value; | |
836 | struct field *f; | |
837 | ||
025bb325 | 838 | case stStruct: /* Start a block defining a struct type. */ |
c906108c SS |
839 | type_code = TYPE_CODE_STRUCT; |
840 | goto structured_common; | |
841 | ||
025bb325 | 842 | case stUnion: /* Start a block defining a union type. */ |
c906108c SS |
843 | type_code = TYPE_CODE_UNION; |
844 | goto structured_common; | |
845 | ||
025bb325 | 846 | case stEnum: /* Start a block defining an enum type. */ |
c906108c SS |
847 | type_code = TYPE_CODE_ENUM; |
848 | goto structured_common; | |
849 | ||
025bb325 | 850 | case stBlock: /* Either a lexical block, or some type. */ |
c5aa993b | 851 | if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc)) |
c906108c SS |
852 | goto case_stBlock_code; /* Lexical block */ |
853 | ||
854 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ | |
855 | ||
856 | /* Common code for handling struct, union, enum, and/or as-yet- | |
857 | unknown-type blocks of info about structured data. `type_code' | |
858 | has been set to the proper TYPE_CODE, if we know it. */ | |
859 | structured_common: | |
860 | found_ecoff_debugging_info = 1; | |
861 | push_parse_stack (); | |
862 | top_stack->blocktype = stBlock; | |
863 | ||
025bb325 | 864 | /* First count the number of fields and the highest value. */ |
c906108c SS |
865 | nfields = 0; |
866 | max_value = 0; | |
867 | for (ext_tsym = ext_sh + external_sym_size; | |
868 | ; | |
869 | ext_tsym += external_sym_size) | |
870 | { | |
871 | SYMR tsym; | |
872 | ||
873 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
874 | ||
875 | switch (tsym.st) | |
876 | { | |
877 | case stEnd: | |
dda83cd7 SM |
878 | /* C++ encodes class types as structures where there the |
879 | methods are encoded as stProc. The scope of stProc | |
880 | symbols also ends with stEnd, thus creating a risk of | |
881 | taking the wrong stEnd symbol record as the end of | |
882 | the current struct, which would cause GDB to undercount | |
883 | the real number of fields in this struct. To make sure | |
884 | we really reached the right stEnd symbol record, we | |
885 | check the associated name, and match it against the | |
886 | struct name. Since method names are mangled while | |
887 | the class name is not, there is no risk of having a | |
888 | method whose name is identical to the class name | |
889 | (in particular constructor method names are different | |
890 | from the class name). There is therefore no risk that | |
891 | this check stops the count on the StEnd of a method. | |
7bde8967 KB |
892 | |
893 | Also, assume that we're really at the end when tsym.iss | |
894 | is 0 (issNull). */ | |
dda83cd7 | 895 | if (tsym.iss == issNull |
7bde8967 | 896 | || strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss, |
dda83cd7 SM |
897 | name) == 0) |
898 | goto end_of_fields; | |
899 | break; | |
c906108c SS |
900 | |
901 | case stMember: | |
902 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
903 | { |
904 | /* If the type of the member is Nil (or Void), | |
905 | without qualifiers, assume the tag is an | |
906 | enumeration. | |
907 | Alpha cc -migrate enums are recognized by a zero | |
908 | index and a zero symbol value. | |
909 | DU 4.0 cc enums are recognized by a member type of | |
910 | btEnum without qualifiers and a zero symbol value. */ | |
911 | if (tsym.index == indexNil | |
912 | || (tsym.index == 0 && sh->value == 0)) | |
913 | type_code = TYPE_CODE_ENUM; | |
914 | else | |
915 | { | |
916 | (*debug_swap->swap_tir_in) (bigend, | |
917 | &ax[tsym.index].a_ti, | |
918 | &tir); | |
919 | if ((tir.bt == btNil || tir.bt == btVoid | |
920 | || (tir.bt == btEnum && sh->value == 0)) | |
921 | && tir.tq0 == tqNil) | |
922 | type_code = TYPE_CODE_ENUM; | |
923 | } | |
924 | } | |
c906108c SS |
925 | nfields++; |
926 | if (tsym.value > max_value) | |
927 | max_value = tsym.value; | |
928 | break; | |
929 | ||
930 | case stBlock: | |
931 | case stUnion: | |
932 | case stEnum: | |
933 | case stStruct: | |
934 | { | |
935 | #if 0 | |
936 | /* This is a no-op; is it trying to tell us something | |
937 | we should be checking? */ | |
c5aa993b | 938 | if (tsym.sc == scVariant); /*UNIMPLEMENTED */ |
c906108c SS |
939 | #endif |
940 | if (tsym.index != 0) | |
941 | { | |
942 | /* This is something like a struct within a | |
dda83cd7 SM |
943 | struct. Skip over the fields of the inner |
944 | struct. The -1 is because the for loop will | |
945 | increment ext_tsym. */ | |
c906108c SS |
946 | ext_tsym = ((char *) debug_info->external_sym |
947 | + ((cur_fdr->isymBase + tsym.index - 1) | |
948 | * external_sym_size)); | |
949 | } | |
950 | } | |
951 | break; | |
952 | ||
953 | case stTypedef: | |
954 | /* mips cc puts out a typedef for struct x if it is not yet | |
955 | defined when it encounters | |
956 | struct y { struct x *xp; }; | |
025bb325 | 957 | Just ignore it. */ |
c906108c SS |
958 | break; |
959 | ||
960 | case stIndirect: | |
961 | /* Irix5 cc puts out a stIndirect for struct x if it is not | |
962 | yet defined when it encounters | |
963 | struct y { struct x *xp; }; | |
025bb325 | 964 | Just ignore it. */ |
c906108c SS |
965 | break; |
966 | ||
967 | default: | |
b98664d3 | 968 | complaint (_("declaration block contains " |
3e43a32a | 969 | "unhandled symbol type %d"), |
23136709 | 970 | tsym.st); |
c906108c SS |
971 | } |
972 | } | |
82ae4854 | 973 | end_of_fields: |
c906108c SS |
974 | |
975 | /* In an stBlock, there is no way to distinguish structs, | |
976 | unions, and enums at this point. This is a bug in the | |
977 | original design (that has been fixed with the recent | |
978 | addition of the stStruct, stUnion, and stEnum symbol | |
979 | types.) The way you can tell is if/when you see a variable | |
980 | or field of that type. In that case the variable's type | |
981 | (in the AUX table) says if the type is struct, union, or | |
982 | enum, and points back to the stBlock here. So you can | |
983 | patch the tag kind up later - but only if there actually is | |
984 | a variable or field of that type. | |
985 | ||
986 | So until we know for sure, we will guess at this point. | |
987 | The heuristic is: | |
988 | If the first member has index==indexNil or a void type, | |
989 | assume we have an enumeration. | |
990 | Otherwise, if there is more than one member, and all | |
991 | the members have offset 0, assume we have a union. | |
992 | Otherwise, assume we have a struct. | |
993 | ||
994 | The heuristic could guess wrong in the case of of an | |
995 | enumeration with no members or a union with one (or zero) | |
996 | members, or when all except the last field of a struct have | |
997 | width zero. These are uncommon and/or illegal situations, | |
998 | and in any case guessing wrong probably doesn't matter | |
999 | much. | |
1000 | ||
1001 | But if we later do find out we were wrong, we fixup the tag | |
1002 | kind. Members of an enumeration must be handled | |
1003 | differently from struct/union fields, and that is harder to | |
1004 | patch up, but luckily we shouldn't need to. (If there are | |
1005 | any enumeration members, we can tell for sure it's an enum | |
025bb325 | 1006 | here.) */ |
c906108c SS |
1007 | |
1008 | if (type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
1009 | { |
1010 | if (nfields > 1 && max_value == 0) | |
1011 | type_code = TYPE_CODE_UNION; | |
1012 | else | |
1013 | type_code = TYPE_CODE_STRUCT; | |
1014 | } | |
c906108c SS |
1015 | |
1016 | /* Create a new type or use the pending type. */ | |
1017 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
cafb3438 | 1018 | if (pend == NULL) |
c906108c SS |
1019 | { |
1020 | t = new_type (NULL); | |
1021 | add_pending (cur_fdr, ext_sh, t); | |
1022 | } | |
1023 | else | |
1024 | t = pend->t; | |
1025 | ||
1026 | /* Do not set the tag name if it is a compiler generated tag name | |
1027 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. | |
1028 | Alpha cc puts out an sh->iss of zero for those. */ | |
1029 | if (sh->iss == 0 || name[0] == '.' || name[0] == '\0') | |
d0e39ea2 | 1030 | t->set_name (NULL); |
c906108c | 1031 | else |
d0e39ea2 SM |
1032 | t->set_name (obconcat (&mdebugread_objfile->objfile_obstack, |
1033 | name, (char *) NULL)); | |
c906108c | 1034 | |
67607e24 | 1035 | t->set_code (type_code); |
b6cdbc9a | 1036 | t->set_length (sh->value); |
4b3d893a | 1037 | t->alloc_fields (nfields); |
c906108c SS |
1038 | |
1039 | if (type_code == TYPE_CODE_ENUM) | |
1040 | { | |
1041 | int unsigned_enum = 1; | |
1042 | ||
025bb325 | 1043 | /* This is a non-empty enum. */ |
c906108c SS |
1044 | |
1045 | /* DEC c89 has the number of enumerators in the sh.value field, | |
1046 | not the type length, so we have to compensate for that | |
1047 | incompatibility quirk. | |
1048 | This might do the wrong thing for an enum with one or two | |
1049 | enumerators and gcc -gcoff -fshort-enums, but these cases | |
1050 | are hopefully rare enough. | |
1051 | Alpha cc -migrate has a sh.value field of zero, we adjust | |
1052 | that too. */ | |
df86565b SM |
1053 | if (t->length () == t->num_fields () |
1054 | || t->length () == 0) | |
b6cdbc9a | 1055 | t->set_length (gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT); |
c906108c SS |
1056 | for (ext_tsym = ext_sh + external_sym_size; |
1057 | ; | |
1058 | ext_tsym += external_sym_size) | |
1059 | { | |
1060 | SYMR tsym; | |
1061 | struct symbol *enum_sym; | |
1062 | ||
1063 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
1064 | ||
1065 | if (tsym.st != stMember) | |
1066 | break; | |
1067 | ||
cd3f655c | 1068 | f->set_loc_enumval (tsym.value); |
5d14b6e5 | 1069 | f->set_type (t); |
d3fd12df | 1070 | f->set_name (debug_info->ss + cur_fdr->issBase + tsym.iss); |
c906108c SS |
1071 | FIELD_BITSIZE (*f) = 0; |
1072 | ||
8c14c3a3 | 1073 | enum_sym = new (&mdebugread_objfile->objfile_obstack) symbol; |
43678b0a CB |
1074 | enum_sym->set_linkage_name |
1075 | (obstack_strdup (&mdebugread_objfile->objfile_obstack, | |
d3fd12df | 1076 | f->name ())); |
ba44b1a3 | 1077 | enum_sym->set_aclass_index (LOC_CONST); |
5f9c5a63 | 1078 | enum_sym->set_type (t); |
6c9c307c | 1079 | enum_sym->set_domain (VAR_DOMAIN); |
4aeddc50 SM |
1080 | enum_sym->set_value_longest (tsym.value); |
1081 | if (enum_sym->value_longest () < 0) | |
c906108c | 1082 | unsigned_enum = 0; |
c7efd0b9 | 1083 | add_symbol (enum_sym, top_stack->cur_st, top_stack->cur_block); |
c906108c | 1084 | |
025bb325 | 1085 | /* Skip the stMembers that we've handled. */ |
c906108c SS |
1086 | count++; |
1087 | f++; | |
1088 | } | |
1089 | if (unsigned_enum) | |
653223d3 | 1090 | t->set_is_unsigned (true); |
c906108c | 1091 | } |
025bb325 | 1092 | /* Make this the current type. */ |
c906108c SS |
1093 | top_stack->cur_type = t; |
1094 | top_stack->cur_field = 0; | |
1095 | ||
1096 | /* Do not create a symbol for alpha cc unnamed structs. */ | |
1097 | if (sh->iss == 0) | |
1098 | break; | |
1099 | ||
1100 | /* gcc puts out an empty struct for an opaque struct definitions, | |
1101 | do not create a symbol for it either. */ | |
1f704f76 | 1102 | if (t->num_fields () == 0) |
c906108c | 1103 | { |
b4b73759 | 1104 | t->set_is_stub (true); |
c906108c SS |
1105 | break; |
1106 | } | |
1107 | ||
1108 | s = new_symbol (name); | |
6c9c307c | 1109 | s->set_domain (STRUCT_DOMAIN); |
ba44b1a3 | 1110 | s->set_aclass_index (LOC_TYPEDEF); |
4aeddc50 | 1111 | s->set_value_longest (0); |
5f9c5a63 | 1112 | s->set_type (t); |
c7efd0b9 | 1113 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1114 | break; |
1115 | ||
1116 | /* End of local variables shared by struct, union, enum, and | |
1117 | block (as yet unknown struct/union/enum) processing. */ | |
1118 | } | |
1119 | ||
1120 | case_stBlock_code: | |
1121 | found_ecoff_debugging_info = 1; | |
025bb325 | 1122 | /* Beginnning of (code) block. Value of symbol |
dda83cd7 | 1123 | is the displacement from procedure start. */ |
c906108c SS |
1124 | push_parse_stack (); |
1125 | ||
1126 | /* Do not start a new block if this is the outermost block of a | |
dda83cd7 SM |
1127 | procedure. This allows the LOC_BLOCK symbol to point to the |
1128 | block with the local variables, so funcname::var works. */ | |
c906108c SS |
1129 | if (top_stack->blocktype == stProc |
1130 | || top_stack->blocktype == stStaticProc) | |
1131 | { | |
1132 | top_stack->blocktype = stNil; | |
1133 | break; | |
1134 | } | |
1135 | ||
1136 | top_stack->blocktype = stBlock; | |
69fb3874 | 1137 | b = new_block (objfile, NON_FUNCTION_BLOCK, psymtab_language); |
4b8791e1 | 1138 | b->set_start (sh->value + top_stack->procadr); |
f135fe72 | 1139 | b->set_superblock (top_stack->cur_block); |
c906108c SS |
1140 | top_stack->cur_block = b; |
1141 | add_block (b, top_stack->cur_st); | |
1142 | break; | |
1143 | ||
1144 | case stEnd: /* end (of anything) */ | |
c5aa993b | 1145 | if (sh->sc == scInfo || SC_IS_COMMON (sh->sc)) |
c906108c SS |
1146 | { |
1147 | /* Finished with type */ | |
1148 | top_stack->cur_type = 0; | |
1149 | } | |
1150 | else if (sh->sc == scText && | |
1151 | (top_stack->blocktype == stProc || | |
1152 | top_stack->blocktype == stStaticProc)) | |
1153 | { | |
1154 | /* Finished with procedure */ | |
63d609de | 1155 | struct blockvector *bv |
44281e6c | 1156 | = top_stack->cur_st->compunit ()->blockvector (); |
f92761ec | 1157 | struct mdebug_extra_func_info *e; |
b926417a | 1158 | struct block *cblock = top_stack->cur_block; |
c906108c | 1159 | struct type *ftype = top_stack->cur_type; |
c906108c | 1160 | |
4b8791e1 SM |
1161 | top_stack->cur_block->set_end |
1162 | (top_stack->cur_block->end () + sh->value); /* size */ | |
c906108c | 1163 | |
025bb325 | 1164 | /* Make up special symbol to contain procedure specific info. */ |
f92761ec | 1165 | s = new_symbol (MDEBUG_EFI_SYMBOL_NAME); |
6c9c307c | 1166 | s->set_domain (LABEL_DOMAIN); |
ba44b1a3 | 1167 | s->set_aclass_index (LOC_CONST); |
a8ed3dde | 1168 | s->set_type (builtin_type (mdebugread_objfile)->builtin_void); |
e39db4db SM |
1169 | e = OBSTACK_ZALLOC (&mdebugread_objfile->objfile_obstack, |
1170 | mdebug_extra_func_info); | |
4aeddc50 | 1171 | s->set_value_bytes ((gdb_byte *) e); |
c906108c SS |
1172 | e->numargs = top_stack->numargs; |
1173 | e->pdr.framereg = -1; | |
c7efd0b9 | 1174 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c | 1175 | |
c906108c SS |
1176 | /* f77 emits proc-level with address bounds==[0,0], |
1177 | So look for such child blocks, and patch them. */ | |
63d609de | 1178 | for (block *b_bad : bv->blocks ()) |
c906108c | 1179 | { |
f135fe72 | 1180 | if (b_bad->superblock () == cblock |
4b8791e1 SM |
1181 | && b_bad->start () == top_stack->procadr |
1182 | && b_bad->end () == top_stack->procadr) | |
c906108c | 1183 | { |
4b8791e1 SM |
1184 | b_bad->set_start (cblock->start ()); |
1185 | b_bad->set_end (cblock->end ()); | |
c906108c SS |
1186 | } |
1187 | } | |
1188 | ||
1f704f76 | 1189 | if (ftype->num_fields () <= 0) |
c906108c SS |
1190 | { |
1191 | /* No parameter type information is recorded with the function's | |
dda83cd7 | 1192 | type. Set that from the type of the parameter symbols. */ |
c906108c SS |
1193 | int nparams = top_stack->numargs; |
1194 | int iparams; | |
c906108c SS |
1195 | |
1196 | if (nparams > 0) | |
1197 | { | |
4b3d893a | 1198 | ftype->alloc_fields (nparams); |
c5aa993b | 1199 | |
de4f826b | 1200 | iparams = 0; |
548a89df | 1201 | for (struct symbol *sym : block_iterator_range (cblock)) |
c906108c | 1202 | { |
de4f826b DC |
1203 | if (iparams == nparams) |
1204 | break; | |
1205 | ||
d9743061 | 1206 | if (sym->is_argument ()) |
c906108c | 1207 | { |
5f9c5a63 | 1208 | ftype->field (iparams).set_type (sym->type ()); |
321d8b3f | 1209 | ftype->field (iparams).set_is_artificial (false); |
c906108c | 1210 | iparams++; |
c906108c SS |
1211 | } |
1212 | } | |
1213 | } | |
1214 | } | |
1215 | } | |
1216 | else if (sh->sc == scText && top_stack->blocktype == stBlock) | |
1217 | { | |
025bb325 | 1218 | /* End of (code) block. The value of the symbol is the |
c906108c | 1219 | displacement from the procedure`s start address of the |
025bb325 | 1220 | end of this block. */ |
4b8791e1 | 1221 | top_stack->cur_block->set_end (sh->value + top_stack->procadr); |
c906108c SS |
1222 | } |
1223 | else if (sh->sc == scText && top_stack->blocktype == stNil) | |
1224 | { | |
1225 | /* End of outermost block. Pop parse stack and ignore. The | |
1226 | following stEnd of stProc will take care of the block. */ | |
1227 | ; | |
1228 | } | |
1229 | else if (sh->sc == scText && top_stack->blocktype == stFile) | |
1230 | { | |
1231 | /* End of file. Pop parse stack and ignore. Higher | |
1232 | level code deals with this. */ | |
1233 | ; | |
1234 | } | |
1235 | else | |
b98664d3 | 1236 | complaint (_("stEnd with storage class %d not handled"), sh->sc); |
c906108c | 1237 | |
025bb325 | 1238 | pop_parse_stack (); /* Restore previous lexical context. */ |
c906108c SS |
1239 | break; |
1240 | ||
1241 | case stMember: /* member of struct or union */ | |
b926417a | 1242 | { |
80fc5e77 SM |
1243 | struct field *f = &top_stack->cur_type->field (top_stack->cur_field); |
1244 | top_stack->cur_field++; | |
d3fd12df | 1245 | f->set_name (name); |
cd3f655c | 1246 | f->set_loc_bitpos (sh->value); |
b926417a | 1247 | bitsize = 0; |
5d14b6e5 SM |
1248 | f->set_type (parse_type (cur_fd, ax, sh->index, &bitsize, bigend, |
1249 | name)); | |
b926417a TT |
1250 | FIELD_BITSIZE (*f) = bitsize; |
1251 | } | |
c906108c SS |
1252 | break; |
1253 | ||
1254 | case stIndirect: /* forward declaration on Irix5 */ | |
1255 | /* Forward declarations from Irix5 cc are handled by cross_ref, | |
dda83cd7 | 1256 | skip them. */ |
c906108c SS |
1257 | break; |
1258 | ||
1259 | case stTypedef: /* type definition */ | |
1260 | found_ecoff_debugging_info = 1; | |
1261 | ||
1262 | /* Typedefs for forward declarations and opaque structs from alpha cc | |
dda83cd7 | 1263 | are handled by cross_ref, skip them. */ |
c906108c SS |
1264 | if (sh->iss == 0) |
1265 | break; | |
1266 | ||
1267 | /* Parse the type or use the pending type. */ | |
1268 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
cafb3438 | 1269 | if (pend == NULL) |
c906108c | 1270 | { |
cafb3438 | 1271 | t = parse_type (cur_fd, ax, sh->index, NULL, bigend, name); |
c906108c SS |
1272 | add_pending (cur_fdr, ext_sh, t); |
1273 | } | |
1274 | else | |
1275 | t = pend->t; | |
1276 | ||
025bb325 | 1277 | /* Mips cc puts out a typedef with the name of the struct for forward |
dda83cd7 SM |
1278 | declarations. These should not go into the symbol table and |
1279 | TYPE_NAME should not be set for them. | |
1280 | They can't be distinguished from an intentional typedef to | |
1281 | the same name however: | |
1282 | x.h: | |
1283 | struct x { int ix; int jx; }; | |
1284 | struct xx; | |
1285 | x.c: | |
1286 | typedef struct x x; | |
1287 | struct xx {int ixx; int jxx; }; | |
1288 | generates a cross referencing stTypedef for x and xx. | |
1289 | The user visible effect of this is that the type of a pointer | |
1290 | to struct foo sometimes is given as `foo *' instead of `struct foo *'. | |
1291 | The problem is fixed with alpha cc and Irix5 cc. */ | |
c906108c SS |
1292 | |
1293 | /* However if the typedef cross references to an opaque aggregate, it | |
dda83cd7 | 1294 | is safe to omit it from the symbol table. */ |
c906108c SS |
1295 | |
1296 | if (has_opaque_xref (cur_fdr, sh)) | |
1297 | break; | |
1298 | s = new_symbol (name); | |
6c9c307c | 1299 | s->set_domain (VAR_DOMAIN); |
ba44b1a3 | 1300 | s->set_aclass_index (LOC_TYPEDEF); |
4aeddc50 | 1301 | s->set_value_block (top_stack->cur_block); |
5f9c5a63 | 1302 | s->set_type (t); |
c7efd0b9 | 1303 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
c906108c SS |
1304 | |
1305 | /* Incomplete definitions of structs should not get a name. */ | |
5f9c5a63 SM |
1306 | if (s->type ()->name () == NULL |
1307 | && (s->type ()->num_fields () != 0 | |
1308 | || (s->type ()->code () != TYPE_CODE_STRUCT | |
1309 | && s->type ()->code () != TYPE_CODE_UNION))) | |
c906108c | 1310 | { |
5f9c5a63 SM |
1311 | if (s->type ()->code () == TYPE_CODE_PTR |
1312 | || s->type ()->code () == TYPE_CODE_FUNC) | |
c906108c SS |
1313 | { |
1314 | /* If we are giving a name to a type such as "pointer to | |
dda83cd7 SM |
1315 | foo" or "function returning foo", we better not set |
1316 | the TYPE_NAME. If the program contains "typedef char | |
1317 | *caddr_t;", we don't want all variables of type char | |
1318 | * to print as caddr_t. This is not just a | |
1319 | consequence of GDB's type management; CC and GCC (at | |
1320 | least through version 2.4) both output variables of | |
1321 | either type char * or caddr_t with the type | |
1322 | refering to the stTypedef symbol for caddr_t. If a future | |
1323 | compiler cleans this up it GDB is not ready for it | |
1324 | yet, but if it becomes ready we somehow need to | |
1325 | disable this check (without breaking the PCC/GCC2.4 | |
1326 | case). | |
1327 | ||
1328 | Sigh. | |
1329 | ||
1330 | Fortunately, this check seems not to be necessary | |
1331 | for anything except pointers or functions. */ | |
c906108c SS |
1332 | } |
1333 | else | |
5f9c5a63 | 1334 | s->type ()->set_name (s->linkage_name ()); |
c906108c SS |
1335 | } |
1336 | break; | |
1337 | ||
1338 | case stFile: /* file name */ | |
1339 | push_parse_stack (); | |
1340 | top_stack->blocktype = sh->st; | |
1341 | break; | |
1342 | ||
1343 | /* I`ve never seen these for C */ | |
1344 | case stRegReloc: | |
1345 | break; /* register relocation */ | |
1346 | case stForward: | |
1347 | break; /* forwarding address */ | |
1348 | case stConstant: | |
1349 | break; /* constant */ | |
1350 | default: | |
b98664d3 | 1351 | complaint (_("unknown symbol type 0x%x"), sh->st); |
c906108c SS |
1352 | break; |
1353 | } | |
1354 | ||
1355 | return count; | |
1356 | } | |
1357 | ||
0a9d309a UW |
1358 | /* Basic types. */ |
1359 | ||
08b8a139 TT |
1360 | static const registry<objfile>::key<struct type *, |
1361 | gdb::noop_deleter<struct type *>> | |
91d3055d | 1362 | basic_type_data; |
0a9d309a UW |
1363 | |
1364 | static struct type * | |
1365 | basic_type (int bt, struct objfile *objfile) | |
1366 | { | |
08feed99 | 1367 | struct gdbarch *gdbarch = objfile->arch (); |
91d3055d | 1368 | struct type **map_bt = basic_type_data.get (objfile); |
0a9d309a UW |
1369 | struct type *tp; |
1370 | ||
1371 | if (bt >= btMax) | |
1372 | return NULL; | |
1373 | ||
1374 | if (!map_bt) | |
1375 | { | |
1376 | map_bt = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
1377 | btMax, struct type *); | |
91d3055d | 1378 | basic_type_data.set (objfile, map_bt); |
0a9d309a UW |
1379 | } |
1380 | ||
1381 | if (map_bt[bt]) | |
1382 | return map_bt[bt]; | |
1383 | ||
33385940 TT |
1384 | type_allocator alloc (objfile); |
1385 | ||
0a9d309a UW |
1386 | switch (bt) |
1387 | { | |
1388 | case btNil: | |
a8ed3dde | 1389 | tp = builtin_type (objfile)->builtin_void; |
0a9d309a UW |
1390 | break; |
1391 | ||
1392 | case btAdr: | |
9c794d2d | 1393 | tp = init_pointer_type (alloc, 32, "adr_32", |
a8ed3dde | 1394 | builtin_type (objfile)->builtin_void); |
0a9d309a UW |
1395 | break; |
1396 | ||
1397 | case btChar: | |
2d39ccd3 | 1398 | tp = init_integer_type (alloc, 8, 0, "char"); |
15152a54 | 1399 | tp->set_has_no_signedness (true); |
0a9d309a UW |
1400 | break; |
1401 | ||
1402 | case btUChar: | |
2d39ccd3 | 1403 | tp = init_integer_type (alloc, 8, 1, "unsigned char"); |
0a9d309a UW |
1404 | break; |
1405 | ||
1406 | case btShort: | |
2d39ccd3 | 1407 | tp = init_integer_type (alloc, 16, 0, "short"); |
0a9d309a UW |
1408 | break; |
1409 | ||
1410 | case btUShort: | |
2d39ccd3 | 1411 | tp = init_integer_type (alloc, 16, 1, "unsigned short"); |
0a9d309a UW |
1412 | break; |
1413 | ||
1414 | case btInt: | |
2d39ccd3 | 1415 | tp = init_integer_type (alloc, 32, 0, "int"); |
0a9d309a UW |
1416 | break; |
1417 | ||
1418 | case btUInt: | |
2d39ccd3 | 1419 | tp = init_integer_type (alloc, 32, 1, "unsigned int"); |
0a9d309a UW |
1420 | break; |
1421 | ||
1422 | case btLong: | |
2d39ccd3 | 1423 | tp = init_integer_type (alloc, 32, 0, "long"); |
0a9d309a UW |
1424 | break; |
1425 | ||
1426 | case btULong: | |
2d39ccd3 | 1427 | tp = init_integer_type (alloc, 32, 1, "unsigned long"); |
0a9d309a UW |
1428 | break; |
1429 | ||
1430 | case btFloat: | |
77c5f496 | 1431 | tp = init_float_type (alloc, gdbarch_float_bit (gdbarch), |
49f190bc | 1432 | "float", gdbarch_float_format (gdbarch)); |
0a9d309a UW |
1433 | break; |
1434 | ||
1435 | case btDouble: | |
77c5f496 | 1436 | tp = init_float_type (alloc, gdbarch_double_bit (gdbarch), |
49f190bc | 1437 | "double", gdbarch_double_format (gdbarch)); |
0a9d309a UW |
1438 | break; |
1439 | ||
1440 | case btComplex: | |
5b930b45 | 1441 | tp = init_complex_type ("complex", basic_type (btFloat, objfile)); |
0a9d309a UW |
1442 | break; |
1443 | ||
1444 | case btDComplex: | |
5b930b45 | 1445 | tp = init_complex_type ("double complex", basic_type (btFloat, objfile)); |
0a9d309a UW |
1446 | break; |
1447 | ||
1448 | case btFixedDec: | |
1449 | /* We use TYPE_CODE_INT to print these as integers. Does this do any | |
1450 | good? Would we be better off with TYPE_CODE_ERROR? Should | |
1451 | TYPE_CODE_ERROR print things in hex if it knows the size? */ | |
2d39ccd3 | 1452 | tp = init_integer_type (alloc, gdbarch_int_bit (gdbarch), 0, |
19f392bc | 1453 | "fixed decimal"); |
0a9d309a UW |
1454 | break; |
1455 | ||
1456 | case btFloatDec: | |
33385940 TT |
1457 | tp = alloc.new_type (TYPE_CODE_ERROR, |
1458 | gdbarch_double_bit (gdbarch), "floating decimal"); | |
0a9d309a UW |
1459 | break; |
1460 | ||
1461 | case btString: | |
1462 | /* Is a "string" the way btString means it the same as TYPE_CODE_STRING? | |
1463 | FIXME. */ | |
33385940 | 1464 | tp = alloc.new_type (TYPE_CODE_STRING, TARGET_CHAR_BIT, "string"); |
0a9d309a UW |
1465 | break; |
1466 | ||
1467 | case btVoid: | |
a8ed3dde | 1468 | tp = builtin_type (objfile)->builtin_void; |
0a9d309a UW |
1469 | break; |
1470 | ||
1471 | case btLong64: | |
2d39ccd3 | 1472 | tp = init_integer_type (alloc, 64, 0, "long"); |
0a9d309a UW |
1473 | break; |
1474 | ||
1475 | case btULong64: | |
2d39ccd3 | 1476 | tp = init_integer_type (alloc, 64, 1, "unsigned long"); |
0a9d309a UW |
1477 | break; |
1478 | ||
1479 | case btLongLong64: | |
2d39ccd3 | 1480 | tp = init_integer_type (alloc, 64, 0, "long long"); |
0a9d309a UW |
1481 | break; |
1482 | ||
1483 | case btULongLong64: | |
2d39ccd3 | 1484 | tp = init_integer_type (alloc, 64, 1, "unsigned long long"); |
0a9d309a UW |
1485 | break; |
1486 | ||
1487 | case btAdr64: | |
9c794d2d | 1488 | tp = init_pointer_type (alloc, 64, "adr_64", |
a8ed3dde | 1489 | builtin_type (objfile)->builtin_void); |
0a9d309a UW |
1490 | break; |
1491 | ||
1492 | case btInt64: | |
2d39ccd3 | 1493 | tp = init_integer_type (alloc, 64, 0, "int"); |
0a9d309a UW |
1494 | break; |
1495 | ||
1496 | case btUInt64: | |
2d39ccd3 | 1497 | tp = init_integer_type (alloc, 64, 1, "unsigned int"); |
0a9d309a UW |
1498 | break; |
1499 | ||
1500 | default: | |
1501 | tp = NULL; | |
1502 | break; | |
1503 | } | |
1504 | ||
1505 | map_bt[bt] = tp; | |
1506 | return tp; | |
1507 | } | |
1508 | ||
c906108c | 1509 | /* Parse the type information provided in the raw AX entries for |
025bb325 | 1510 | the symbol SH. Return the bitfield size in BS, in case. |
c906108c SS |
1511 | We must byte-swap the AX entries before we use them; BIGEND says whether |
1512 | they are big-endian or little-endian (from fh->fBigendian). */ | |
1513 | ||
1514 | static struct type * | |
fba45db2 | 1515 | parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs, |
a121b7c1 | 1516 | int bigend, const char *sym_name) |
c906108c | 1517 | { |
c906108c SS |
1518 | TIR t[1]; |
1519 | struct type *tp = 0; | |
1520 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1521 | ||
025bb325 | 1522 | /* Handle undefined types, they have indexNil. */ |
c906108c | 1523 | if (aux_index == indexNil) |
dd707e8e | 1524 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1525 | |
1526 | /* Handle corrupt aux indices. */ | |
1527 | if (aux_index >= (debug_info->fdr + fd)->caux) | |
1528 | { | |
23136709 | 1529 | index_complaint (sym_name); |
dd707e8e | 1530 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1531 | } |
1532 | ax += aux_index; | |
1533 | ||
1534 | /* Use aux as a type information record, map its basic type. */ | |
1535 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
dd707e8e | 1536 | tp = basic_type (t->bt, mdebugread_objfile); |
0a9d309a | 1537 | if (tp == NULL) |
c906108c | 1538 | { |
025bb325 | 1539 | /* Cannot use builtin types -- build our own. */ |
c906108c SS |
1540 | switch (t->bt) |
1541 | { | |
1542 | case btStruct: | |
1543 | type_code = TYPE_CODE_STRUCT; | |
1544 | break; | |
1545 | case btUnion: | |
1546 | type_code = TYPE_CODE_UNION; | |
1547 | break; | |
1548 | case btEnum: | |
1549 | type_code = TYPE_CODE_ENUM; | |
1550 | break; | |
1551 | case btRange: | |
1552 | type_code = TYPE_CODE_RANGE; | |
1553 | break; | |
1554 | case btSet: | |
1555 | type_code = TYPE_CODE_SET; | |
1556 | break; | |
1557 | case btIndirect: | |
025bb325 | 1558 | /* alpha cc -migrate uses this for typedefs. The true type will |
c906108c SS |
1559 | be obtained by crossreferencing below. */ |
1560 | type_code = TYPE_CODE_ERROR; | |
1561 | break; | |
1562 | case btTypedef: | |
025bb325 | 1563 | /* alpha cc uses this for typedefs. The true type will be |
c906108c SS |
1564 | obtained by crossreferencing below. */ |
1565 | type_code = TYPE_CODE_ERROR; | |
1566 | break; | |
1567 | default: | |
23136709 | 1568 | basic_type_complaint (t->bt, sym_name); |
dd707e8e | 1569 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1570 | } |
1571 | } | |
1572 | ||
33385940 TT |
1573 | type_allocator alloc (mdebugread_objfile); |
1574 | ||
025bb325 | 1575 | /* Move on to next aux. */ |
c906108c SS |
1576 | ax++; |
1577 | ||
1578 | if (t->fBitfield) | |
1579 | { | |
1580 | int width = AUX_GET_WIDTH (bigend, ax); | |
b8d56208 | 1581 | |
25caa7a8 | 1582 | /* Inhibit core dumps if TIR is corrupted. */ |
cafb3438 | 1583 | if (bs == NULL) |
c906108c SS |
1584 | { |
1585 | /* Alpha cc -migrate encodes char and unsigned char types | |
1586 | as short and unsigned short types with a field width of 8. | |
1587 | Enum types also have a field width which we ignore for now. */ | |
1588 | if (t->bt == btShort && width == 8) | |
dd707e8e | 1589 | tp = basic_type (btChar, mdebugread_objfile); |
c906108c | 1590 | else if (t->bt == btUShort && width == 8) |
dd707e8e | 1591 | tp = basic_type (btUChar, mdebugread_objfile); |
c906108c SS |
1592 | else if (t->bt == btEnum) |
1593 | ; | |
1594 | else | |
b98664d3 | 1595 | complaint (_("can't handle TIR fBitfield for %s"), |
23136709 | 1596 | sym_name); |
c906108c SS |
1597 | } |
1598 | else | |
c5aa993b | 1599 | *bs = width; |
c906108c SS |
1600 | ax++; |
1601 | } | |
1602 | ||
1603 | /* A btIndirect entry cross references to an aux entry containing | |
1604 | the type. */ | |
1605 | if (t->bt == btIndirect) | |
1606 | { | |
1607 | RNDXR rn[1]; | |
1608 | int rf; | |
1609 | FDR *xref_fh; | |
1610 | int xref_fd; | |
1611 | ||
1612 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
1613 | ax++; | |
1614 | if (rn->rfd == 0xfff) | |
1615 | { | |
1616 | rf = AUX_GET_ISYM (bigend, ax); | |
1617 | ax++; | |
1618 | } | |
1619 | else | |
1620 | rf = rn->rfd; | |
1621 | ||
1622 | if (rf == -1) | |
1623 | { | |
b98664d3 | 1624 | complaint (_("unable to cross ref btIndirect for %s"), sym_name); |
dd707e8e | 1625 | return basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1626 | } |
1627 | xref_fh = get_rfd (fd, rf); | |
1628 | xref_fd = xref_fh - debug_info->fdr; | |
1629 | tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase, | |
cafb3438 | 1630 | rn->index, NULL, xref_fh->fBigendian, sym_name); |
c906108c SS |
1631 | } |
1632 | ||
1633 | /* All these types really point to some (common) MIPS type | |
1634 | definition, and only the type-qualifiers fully identify | |
025bb325 | 1635 | them. We'll make the same effort at sharing. */ |
c906108c SS |
1636 | if (t->bt == btStruct || |
1637 | t->bt == btUnion || | |
1638 | t->bt == btEnum || | |
1639 | ||
c5aa993b JM |
1640 | /* btSet (I think) implies that the name is a tag name, not a typedef |
1641 | name. This apparently is a MIPS extension for C sets. */ | |
c906108c SS |
1642 | t->bt == btSet) |
1643 | { | |
a121b7c1 | 1644 | const char *name; |
c906108c SS |
1645 | |
1646 | /* Try to cross reference this type, build new type on failure. */ | |
1647 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
cafb3438 | 1648 | if (tp == NULL) |
33385940 | 1649 | tp = alloc.new_type (type_code, 0, NULL); |
c906108c SS |
1650 | |
1651 | /* DEC c89 produces cross references to qualified aggregate types, | |
dda83cd7 | 1652 | dereference them. */ |
78134374 SM |
1653 | while (tp->code () == TYPE_CODE_PTR |
1654 | || tp->code () == TYPE_CODE_ARRAY) | |
27710edb | 1655 | tp = tp->target_type (); |
c906108c SS |
1656 | |
1657 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
dda83cd7 SM |
1658 | Any type may be returned from cross_ref if file indirect entries |
1659 | are corrupted. */ | |
78134374 SM |
1660 | if (tp->code () != TYPE_CODE_STRUCT |
1661 | && tp->code () != TYPE_CODE_UNION | |
1662 | && tp->code () != TYPE_CODE_ENUM) | |
c906108c | 1663 | { |
23136709 | 1664 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1665 | } |
1666 | else | |
1667 | { | |
c906108c SS |
1668 | /* Usually, TYPE_CODE(tp) is already type_code. The main |
1669 | exception is if we guessed wrong re struct/union/enum. | |
1670 | But for struct vs. union a wrong guess is harmless, so | |
1671 | don't complain(). */ | |
78134374 | 1672 | if ((tp->code () == TYPE_CODE_ENUM |
c906108c | 1673 | && type_code != TYPE_CODE_ENUM) |
78134374 | 1674 | || (tp->code () != TYPE_CODE_ENUM |
c906108c SS |
1675 | && type_code == TYPE_CODE_ENUM)) |
1676 | { | |
23136709 | 1677 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1678 | } |
1679 | ||
78134374 | 1680 | if (tp->code () != type_code) |
c906108c | 1681 | { |
67607e24 | 1682 | tp->set_code (type_code); |
c906108c SS |
1683 | } |
1684 | ||
1685 | /* Do not set the tag name if it is a compiler generated tag name | |
c5aa993b | 1686 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ |
c906108c | 1687 | if (name[0] == '.' || name[0] == '\0') |
d0e39ea2 | 1688 | tp->set_name (NULL); |
7d93a1e0 SM |
1689 | else if (tp->name () == NULL |
1690 | || strcmp (tp->name (), name) != 0) | |
d0e39ea2 SM |
1691 | tp->set_name (obstack_strdup (&mdebugread_objfile->objfile_obstack, |
1692 | name)); | |
c906108c SS |
1693 | } |
1694 | } | |
1695 | ||
1696 | /* All these types really point to some (common) MIPS type | |
1697 | definition, and only the type-qualifiers fully identify | |
1698 | them. We'll make the same effort at sharing. | |
1699 | FIXME: We are not doing any guessing on range types. */ | |
1700 | if (t->bt == btRange) | |
1701 | { | |
a121b7c1 | 1702 | const char *name; |
c906108c SS |
1703 | |
1704 | /* Try to cross reference this type, build new type on failure. */ | |
1705 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
cafb3438 | 1706 | if (tp == NULL) |
33385940 | 1707 | tp = alloc.new_type (type_code, 0, NULL); |
c906108c SS |
1708 | |
1709 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
dda83cd7 SM |
1710 | Any type may be returned from cross_ref if file indirect entries |
1711 | are corrupted. */ | |
78134374 | 1712 | if (tp->code () != TYPE_CODE_RANGE) |
c906108c | 1713 | { |
23136709 | 1714 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1715 | } |
1716 | else | |
1717 | { | |
1718 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
025bb325 | 1719 | exception is if we guessed wrong re struct/union/enum. */ |
78134374 | 1720 | if (tp->code () != type_code) |
c906108c | 1721 | { |
23136709 | 1722 | bad_tag_guess_complaint (sym_name); |
67607e24 | 1723 | tp->set_code (type_code); |
c906108c | 1724 | } |
7d93a1e0 SM |
1725 | if (tp->name () == NULL |
1726 | || strcmp (tp->name (), name) != 0) | |
d0e39ea2 SM |
1727 | tp->set_name (obstack_strdup (&mdebugread_objfile->objfile_obstack, |
1728 | name)); | |
c906108c SS |
1729 | } |
1730 | } | |
1731 | if (t->bt == btTypedef) | |
1732 | { | |
a121b7c1 | 1733 | const char *name; |
c906108c SS |
1734 | |
1735 | /* Try to cross reference this type, it should succeed. */ | |
1736 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
cafb3438 | 1737 | if (tp == NULL) |
c906108c | 1738 | { |
b98664d3 | 1739 | complaint (_("unable to cross ref btTypedef for %s"), sym_name); |
dd707e8e | 1740 | tp = basic_type (btInt, mdebugread_objfile); |
c906108c SS |
1741 | } |
1742 | } | |
1743 | ||
025bb325 | 1744 | /* Deal with range types. */ |
c906108c SS |
1745 | if (t->bt == btRange) |
1746 | { | |
5e33d5f4 | 1747 | tp->set_num_fields (0); |
c4dfcb36 SM |
1748 | tp->set_bounds (((struct range_bounds *) |
1749 | TYPE_ZALLOC (tp, sizeof (struct range_bounds)))); | |
8c2e4e06 | 1750 | tp->bounds ()->low.set_const_val (AUX_GET_DNLOW (bigend, ax)); |
c906108c | 1751 | ax++; |
8c2e4e06 | 1752 | tp->bounds ()->high.set_const_val (AUX_GET_DNHIGH (bigend, ax)); |
c906108c SS |
1753 | ax++; |
1754 | } | |
1755 | ||
025bb325 MS |
1756 | /* Parse all the type qualifiers now. If there are more |
1757 | than 6 the game will continue in the next aux. */ | |
c906108c SS |
1758 | |
1759 | while (1) | |
1760 | { | |
1761 | #define PARSE_TQ(tq) \ | |
1762 | if (t->tq != tqNil) \ | |
1763 | ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \ | |
1764 | else \ | |
1765 | break; | |
1766 | ||
1767 | PARSE_TQ (tq0); | |
1768 | PARSE_TQ (tq1); | |
1769 | PARSE_TQ (tq2); | |
1770 | PARSE_TQ (tq3); | |
1771 | PARSE_TQ (tq4); | |
1772 | PARSE_TQ (tq5); | |
1773 | #undef PARSE_TQ | |
1774 | ||
1775 | /* mips cc 2.x and gcc never put out continued aux entries. */ | |
1776 | if (!t->continued) | |
1777 | break; | |
1778 | ||
1779 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1780 | ax++; | |
1781 | } | |
1782 | ||
1783 | /* Complain for illegal continuations due to corrupt aux entries. */ | |
1784 | if (t->continued) | |
b98664d3 | 1785 | complaint (_("illegal TIR continued for %s"), sym_name); |
c5aa993b | 1786 | |
c906108c SS |
1787 | return tp; |
1788 | } | |
1789 | ||
1790 | /* Make up a complex type from a basic one. Type is passed by | |
025bb325 | 1791 | reference in TPP and side-effected as necessary. The type |
c906108c SS |
1792 | qualifier TQ says how to handle the aux symbols at AX for |
1793 | the symbol SX we are currently analyzing. BIGEND says whether | |
1794 | aux symbols are big-endian or little-endian. | |
025bb325 | 1795 | Returns the number of aux symbols we parsed. */ |
c906108c SS |
1796 | |
1797 | static int | |
fba45db2 | 1798 | upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend, |
a121b7c1 | 1799 | const char *sym_name) |
c906108c SS |
1800 | { |
1801 | int off; | |
1802 | struct type *t; | |
1803 | ||
025bb325 | 1804 | /* Used in array processing. */ |
c906108c SS |
1805 | int rf, id; |
1806 | FDR *fh; | |
1807 | struct type *range; | |
1808 | struct type *indx; | |
1809 | int lower, upper; | |
1810 | RNDXR rndx; | |
1811 | ||
1812 | switch (tq) | |
1813 | { | |
1814 | case tqPtr: | |
1815 | t = lookup_pointer_type (*tpp); | |
1816 | *tpp = t; | |
1817 | return 0; | |
1818 | ||
1819 | case tqProc: | |
1820 | t = lookup_function_type (*tpp); | |
1821 | *tpp = t; | |
1822 | return 0; | |
1823 | ||
1824 | case tqArray: | |
1825 | off = 0; | |
1826 | ||
025bb325 | 1827 | /* Determine and record the domain type (type of index). */ |
c906108c SS |
1828 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx); |
1829 | id = rndx.index; | |
1830 | rf = rndx.rfd; | |
1831 | if (rf == 0xfff) | |
1832 | { | |
1833 | ax++; | |
1834 | rf = AUX_GET_ISYM (bigend, ax); | |
1835 | off++; | |
1836 | } | |
1837 | fh = get_rfd (fd, rf); | |
1838 | ||
1839 | indx = parse_type (fh - debug_info->fdr, | |
1840 | debug_info->external_aux + fh->iauxBase, | |
cafb3438 | 1841 | id, NULL, bigend, sym_name); |
c906108c SS |
1842 | |
1843 | /* The bounds type should be an integer type, but might be anything | |
dda83cd7 | 1844 | else due to corrupt aux entries. */ |
78134374 | 1845 | if (indx->code () != TYPE_CODE_INT) |
c906108c | 1846 | { |
b98664d3 | 1847 | complaint (_("illegal array index type for %s, assuming int"), |
3e43a32a | 1848 | sym_name); |
a8ed3dde | 1849 | indx = builtin_type (mdebugread_objfile)->builtin_int; |
c906108c SS |
1850 | } |
1851 | ||
1852 | /* Get the bounds, and create the array type. */ | |
1853 | ax++; | |
1854 | lower = AUX_GET_DNLOW (bigend, ax); | |
1855 | ax++; | |
1856 | upper = AUX_GET_DNHIGH (bigend, ax); | |
1857 | ax++; | |
1858 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ | |
1859 | ||
e727c536 TT |
1860 | { |
1861 | type_allocator alloc (indx); | |
1862 | range = create_static_range_type (alloc, indx, lower, upper); | |
c906108c | 1863 | |
9e76b17a | 1864 | t = create_array_type (alloc, *tpp, range); |
e727c536 | 1865 | } |
c906108c SS |
1866 | |
1867 | /* We used to fill in the supplied array element bitsize | |
dda83cd7 SM |
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. */ |
df86565b | 1882 | if ((*tpp)->length () == 0) |
8f53807e | 1883 | t->set_target_is_stub (true); |
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, |
891813be | 1916 | legacy_psymtab *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), | |
dda83cd7 SM |
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. |
dda83cd7 SM |
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, | |
63d609de | 1976 | search_symtab->blockvector ()->static_block (), |
176620f1 | 1977 | VAR_DOMAIN, |
c906108c SS |
1978 | LOC_BLOCK); |
1979 | #endif | |
1980 | } | |
1981 | else | |
1982 | s = mylookup_symbol (sh_name, top_stack->cur_block, | |
176620f1 | 1983 | VAR_DOMAIN, LOC_BLOCK); |
c906108c SS |
1984 | |
1985 | if (s != 0) | |
1986 | { | |
4aeddc50 | 1987 | b = s->value_block (); |
c906108c SS |
1988 | } |
1989 | else | |
1990 | { | |
b98664d3 | 1991 | complaint (_("PDR for %s, but no symbol"), sh_name); |
c906108c SS |
1992 | #if 1 |
1993 | return; | |
1994 | #else | |
1995 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ | |
1996 | s = new_symbol (sh_name); | |
6c9c307c | 1997 | s->set_domain (VAR_DOMAIN); |
c906108c | 1998 | SYMBOL_CLASS (s) = LOC_BLOCK; |
85102364 | 1999 | /* Don't know its type, hope int is ok. */ |
5f9c5a63 | 2000 | s->type () |
a8ed3dde | 2001 | = lookup_function_type (builtin_type (pst->objfile)->builtin_int); |
c7efd0b9 | 2002 | add_symbol (s, top_stack->cur_st, top_stack->cur_block); |
025bb325 | 2003 | /* Won't have symbols for this one. */ |
c906108c SS |
2004 | b = new_block (2); |
2005 | SYMBOL_BLOCK_VALUE (s) = b; | |
2006 | BLOCK_FUNCTION (b) = s; | |
2007 | BLOCK_START (b) = pr->adr; | |
2008 | /* BOUND used to be the end of procedure's text, but the | |
dda83cd7 | 2009 | argument is no longer passed in. */ |
c906108c SS |
2010 | BLOCK_END (b) = bound; |
2011 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
2012 | add_block (b, top_stack->cur_st); | |
2013 | #endif | |
2014 | } | |
2015 | ||
f92761ec | 2016 | i = mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME, b, LABEL_DOMAIN, LOC_CONST); |
c906108c SS |
2017 | |
2018 | if (i) | |
2019 | { | |
9918cab9 JB |
2020 | struct mdebug_extra_func_info *e; |
2021 | ||
4aeddc50 | 2022 | e = (struct mdebug_extra_func_info *) i->value_bytes (); |
c906108c | 2023 | e->pdr = *pr; |
c906108c SS |
2024 | |
2025 | /* GDB expects the absolute function start address for the | |
dda83cd7 SM |
2026 | procedure descriptor in e->pdr.adr. |
2027 | As the address in the procedure descriptor is usually relative, | |
2028 | we would have to relocate e->pdr.adr with cur_fdr->adr. | |
2029 | Unfortunately cur_fdr->adr and e->pdr.adr are both absolute | |
2030 | in shared libraries on some systems, and on other systems | |
2031 | e->pdr.adr is sometimes offset by a bogus value. | |
2032 | To work around these problems, we replace e->pdr.adr with | |
2033 | the start address of the function. */ | |
4b8791e1 | 2034 | e->pdr.adr = b->start (); |
c906108c SS |
2035 | } |
2036 | ||
2037 | /* It would be reasonable that functions that have been compiled | |
2038 | without debugging info have a btNil type for their return value, | |
2039 | and functions that are void and are compiled with debugging info | |
2040 | have btVoid. | |
2041 | gcc and DEC f77 put out btNil types for both cases, so btNil is mapped | |
2042 | to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info' | |
2043 | case right. | |
2044 | The glevel field in cur_fdr could be used to determine the presence | |
2045 | of debugging info, but GCC doesn't always pass the -g switch settings | |
2046 | to the assembler and GAS doesn't set the glevel field from the -g switch | |
2047 | settings. | |
2048 | To work around these problems, the return value type of a TYPE_CODE_VOID | |
2049 | function is adjusted accordingly if no debugging info was found in the | |
2050 | compilation unit. */ | |
c5aa993b | 2051 | |
c906108c SS |
2052 | if (processing_gcc_compilation == 0 |
2053 | && found_ecoff_debugging_info == 0 | |
27710edb | 2054 | && s->type ()->target_type ()->code () == TYPE_CODE_VOID) |
a8ed3dde | 2055 | s->set_type (builtin_type (mdebugread_objfile)->nodebug_text_symbol); |
c906108c SS |
2056 | } |
2057 | ||
025bb325 | 2058 | /* Parse the external symbol ES. Just call parse_symbol() after |
c906108c SS |
2059 | making sure we know where the aux are for it. |
2060 | BIGEND says whether aux entries are big-endian or little-endian. | |
2061 | ||
025bb325 | 2062 | This routine clobbers top_stack->cur_block and ->cur_st. */ |
c906108c | 2063 | |
c906108c | 2064 | static void |
6a053cb1 | 2065 | parse_external (EXTR *es, int bigend, const section_offsets §ion_offsets, |
fba45db2 | 2066 | struct objfile *objfile) |
c906108c SS |
2067 | { |
2068 | union aux_ext *ax; | |
2069 | ||
2070 | if (es->ifd != ifdNil) | |
2071 | { | |
2072 | cur_fd = es->ifd; | |
2073 | cur_fdr = debug_info->fdr + cur_fd; | |
2074 | ax = debug_info->external_aux + cur_fdr->iauxBase; | |
2075 | } | |
2076 | else | |
2077 | { | |
2078 | cur_fdr = debug_info->fdr; | |
2079 | ax = 0; | |
2080 | } | |
2081 | ||
2082 | /* Reading .o files */ | |
c5aa993b | 2083 | if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil) |
c906108c | 2084 | { |
a121b7c1 | 2085 | const char *what; |
c906108c SS |
2086 | switch (es->asym.st) |
2087 | { | |
2088 | case stNil: | |
2089 | /* These are generated for static symbols in .o files, | |
2090 | ignore them. */ | |
2091 | return; | |
2092 | case stStaticProc: | |
2093 | case stProc: | |
2094 | what = "procedure"; | |
2095 | n_undef_procs++; | |
2096 | break; | |
2097 | case stGlobal: | |
2098 | what = "variable"; | |
2099 | n_undef_vars++; | |
2100 | break; | |
2101 | case stLabel: | |
2102 | what = "label"; | |
2103 | n_undef_labels++; | |
2104 | break; | |
2105 | default: | |
2106 | what = "symbol"; | |
2107 | break; | |
2108 | } | |
2109 | n_undef_symbols++; | |
025bb325 | 2110 | /* FIXME: Turn this into a complaint? */ |
c906108c | 2111 | if (info_verbose) |
6cb06a8c TT |
2112 | gdb_printf (_("Warning: %s `%s' is undefined (in %s)\n"), |
2113 | what, debug_info->ssext + es->asym.iss, | |
2114 | fdr_name (cur_fdr)); | |
c906108c SS |
2115 | return; |
2116 | } | |
2117 | ||
2118 | switch (es->asym.st) | |
2119 | { | |
2120 | case stProc: | |
2121 | case stStaticProc: | |
2122 | /* There is no need to parse the external procedure symbols. | |
dda83cd7 SM |
2123 | If they are from objects compiled without -g, their index will |
2124 | be indexNil, and the symbol definition from the minimal symbol | |
2125 | is preferrable (yielding a function returning int instead of int). | |
2126 | If the index points to a local procedure symbol, the local | |
2127 | symbol already provides the correct type. | |
2128 | Note that the index of the external procedure symbol points | |
2129 | to the local procedure symbol in the local symbol table, and | |
2130 | _not_ to the auxiliary symbol info. */ | |
c906108c SS |
2131 | break; |
2132 | case stGlobal: | |
2133 | case stLabel: | |
2134 | /* Global common symbols are resolved by the runtime loader, | |
dda83cd7 | 2135 | ignore them. */ |
c5aa993b | 2136 | if (SC_IS_COMMON (es->asym.sc)) |
c906108c SS |
2137 | break; |
2138 | ||
2139 | /* Note that the case of a symbol with indexNil must be handled | |
dda83cd7 | 2140 | anyways by parse_symbol(). */ |
cafb3438 | 2141 | parse_symbol (&es->asym, ax, NULL, |
3e43a32a | 2142 | bigend, section_offsets, objfile); |
c906108c SS |
2143 | break; |
2144 | default: | |
2145 | break; | |
2146 | } | |
2147 | } | |
2148 | ||
2149 | /* Parse the line number info for file descriptor FH into | |
2150 | GDB's linetable LT. MIPS' encoding requires a little bit | |
2151 | of magic to get things out. Note also that MIPS' line | |
2152 | numbers can go back and forth, apparently we can live | |
025bb325 | 2153 | with that and do not need to reorder our linetables. */ |
c906108c | 2154 | |
c906108c | 2155 | static void |
fba45db2 | 2156 | parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines, |
1acc9dca | 2157 | CORE_ADDR lowest_pdr_addr) |
c906108c SS |
2158 | { |
2159 | unsigned char *base; | |
2160 | int j, k; | |
2161 | int delta, count, lineno = 0; | |
2162 | ||
2163 | if (fh->cbLine == 0) | |
2164 | return; | |
2165 | ||
025bb325 | 2166 | /* Scan by procedure descriptors. */ |
c906108c SS |
2167 | k = 0; |
2168 | for (j = 0; j < fh->cpd; j++, pr++) | |
2169 | { | |
2170 | CORE_ADDR l; | |
2171 | CORE_ADDR adr; | |
2172 | unsigned char *halt; | |
2173 | ||
025bb325 | 2174 | /* No code for this one. */ |
c906108c SS |
2175 | if (pr->iline == ilineNil || |
2176 | pr->lnLow == -1 || pr->lnHigh == -1) | |
2177 | continue; | |
2178 | ||
2179 | /* Determine start and end address of compressed line bytes for | |
dda83cd7 | 2180 | this procedure. */ |
c906108c SS |
2181 | base = debug_info->line + fh->cbLineOffset; |
2182 | if (j != (fh->cpd - 1)) | |
c5aa993b | 2183 | halt = base + pr[1].cbLineOffset; |
c906108c | 2184 | else |
c5aa993b | 2185 | halt = base + fh->cbLine; |
c906108c SS |
2186 | base += pr->cbLineOffset; |
2187 | ||
1acc9dca | 2188 | adr = pr->adr - lowest_pdr_addr; |
c906108c SS |
2189 | |
2190 | l = adr >> 2; /* in words */ | |
c5aa993b | 2191 | for (lineno = pr->lnLow; base < halt;) |
c906108c SS |
2192 | { |
2193 | count = *base & 0x0f; | |
2194 | delta = *base++ >> 4; | |
2195 | if (delta >= 8) | |
2196 | delta -= 16; | |
2197 | if (delta == -8) | |
2198 | { | |
2199 | delta = (base[0] << 8) | base[1]; | |
2200 | if (delta >= 0x8000) | |
2201 | delta -= 0x10000; | |
2202 | base += 2; | |
2203 | } | |
2204 | lineno += delta; /* first delta is 0 */ | |
2205 | ||
025bb325 | 2206 | /* Complain if the line table overflows. Could happen |
c906108c SS |
2207 | with corrupt binaries. */ |
2208 | if (lt->nitems >= maxlines) | |
2209 | { | |
b98664d3 | 2210 | complaint (_("guessed size of linetable for %s incorrectly"), |
23136709 | 2211 | fdr_name (fh)); |
c906108c SS |
2212 | break; |
2213 | } | |
2214 | k = add_line (lt, lineno, l, k); | |
2215 | l += count + 1; | |
2216 | } | |
2217 | } | |
2218 | } | |
2219 | \f | |
23136709 KB |
2220 | static void |
2221 | function_outside_compilation_unit_complaint (const char *arg1) | |
2222 | { | |
b98664d3 | 2223 | complaint (_("function `%s' appears to be defined " |
3e43a32a | 2224 | "outside of all compilation units"), |
23136709 KB |
2225 | arg1); |
2226 | } | |
2227 | ||
1f9872de JB |
2228 | /* Use the STORAGE_CLASS to compute which section the given symbol |
2229 | belongs to, and then records this new minimal symbol. */ | |
2230 | ||
2231 | static void | |
8dddcb8f | 2232 | record_minimal_symbol (minimal_symbol_reader &reader, |
9675da25 | 2233 | const char *name, const unrelocated_addr address, |
dda83cd7 SM |
2234 | enum minimal_symbol_type ms_type, int storage_class, |
2235 | struct objfile *objfile) | |
1f9872de JB |
2236 | { |
2237 | int section; | |
1f9872de JB |
2238 | |
2239 | switch (storage_class) | |
2240 | { | |
2241 | case scText: | |
dda83cd7 SM |
2242 | section = SECT_OFF_TEXT (objfile); |
2243 | break; | |
1f9872de | 2244 | case scData: |
dda83cd7 SM |
2245 | section = SECT_OFF_DATA (objfile); |
2246 | break; | |
1f9872de | 2247 | case scBss: |
dda83cd7 SM |
2248 | section = SECT_OFF_BSS (objfile); |
2249 | break; | |
1f9872de | 2250 | case scSData: |
dda83cd7 SM |
2251 | section = get_section_index (objfile, ".sdata"); |
2252 | break; | |
1f9872de | 2253 | case scSBss: |
dda83cd7 SM |
2254 | section = get_section_index (objfile, ".sbss"); |
2255 | break; | |
1f9872de | 2256 | case scRData: |
dda83cd7 SM |
2257 | section = get_section_index (objfile, ".rdata"); |
2258 | break; | |
1f9872de | 2259 | case scInit: |
dda83cd7 SM |
2260 | section = get_section_index (objfile, ".init"); |
2261 | break; | |
1f9872de | 2262 | case scXData: |
dda83cd7 SM |
2263 | section = get_section_index (objfile, ".xdata"); |
2264 | break; | |
1f9872de | 2265 | case scPData: |
dda83cd7 SM |
2266 | section = get_section_index (objfile, ".pdata"); |
2267 | break; | |
1f9872de | 2268 | case scFini: |
dda83cd7 SM |
2269 | section = get_section_index (objfile, ".fini"); |
2270 | break; | |
1f9872de | 2271 | case scRConst: |
dda83cd7 SM |
2272 | section = get_section_index (objfile, ".rconst"); |
2273 | break; | |
1f9872de JB |
2274 | #ifdef scTlsData |
2275 | case scTlsData: | |
dda83cd7 SM |
2276 | section = get_section_index (objfile, ".tlsdata"); |
2277 | break; | |
1f9872de JB |
2278 | #endif |
2279 | #ifdef scTlsBss | |
2280 | case scTlsBss: | |
dda83cd7 SM |
2281 | section = get_section_index (objfile, ".tlsbss"); |
2282 | break; | |
1f9872de JB |
2283 | #endif |
2284 | default: | |
dda83cd7 SM |
2285 | /* This kind of symbol is not associated to a section. */ |
2286 | section = -1; | |
1f9872de JB |
2287 | } |
2288 | ||
8dddcb8f | 2289 | reader.record_with_info (name, address, ms_type, section); |
1f9872de JB |
2290 | } |
2291 | ||
c906108c SS |
2292 | /* Master parsing procedure for first-pass reading of file symbols |
2293 | into a partial_symtab. */ | |
2294 | ||
2295 | static void | |
8dddcb8f | 2296 | parse_partial_symbols (minimal_symbol_reader &reader, |
7e9c0476 | 2297 | psymtab_storage *partial_symtabs, |
8dddcb8f | 2298 | struct objfile *objfile) |
c906108c | 2299 | { |
08feed99 | 2300 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
2301 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; |
2302 | const bfd_size_type external_rfd_size = debug_swap->external_rfd_size; | |
2303 | const bfd_size_type external_ext_size = debug_swap->external_ext_size; | |
12b9c64f AO |
2304 | void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in; |
2305 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; | |
2306 | void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in; | |
c906108c SS |
2307 | int f_idx, s_idx; |
2308 | HDRR *hdr = &debug_info->symbolic_header; | |
2309 | /* Running pointers */ | |
2310 | FDR *fh; | |
2311 | char *ext_out; | |
2312 | char *ext_out_end; | |
52f0bd74 | 2313 | EXTR *ext_in; |
c906108c SS |
2314 | EXTR *ext_in_end; |
2315 | SYMR sh; | |
891813be | 2316 | legacy_psymtab *pst; |
c906108c | 2317 | int textlow_not_set = 1; |
c906108c | 2318 | |
025bb325 | 2319 | /* List of current psymtab's include files. */ |
0d5cff50 | 2320 | const char **psymtab_include_list; |
c906108c SS |
2321 | int includes_allocated; |
2322 | int includes_used; | |
2323 | EXTR *extern_tab; | |
2324 | struct pst_map *fdr_to_pst; | |
025bb325 | 2325 | /* Index within current psymtab dependency list. */ |
891813be | 2326 | legacy_psymtab **dependency_list; |
c906108c | 2327 | int dependencies_used, dependencies_allocated; |
c906108c SS |
2328 | char *name; |
2329 | enum language prev_language; | |
2330 | asection *text_sect; | |
2331 | int relocatable = 0; | |
2332 | ||
2333 | /* Irix 5.2 shared libraries have a fh->adr field of zero, but | |
2334 | the shared libraries are prelinked at a high memory address. | |
2335 | We have to adjust the start address of the object file for this case, | |
2336 | by setting it to the start address of the first procedure in the file. | |
2337 | But we should do no adjustments if we are debugging a .o file, where | |
2338 | the text section (and fh->adr) really starts at zero. */ | |
2339 | text_sect = bfd_get_section_by_name (cur_bfd, ".text"); | |
2340 | if (text_sect != NULL | |
fd361982 | 2341 | && (bfd_section_flags (text_sect) & SEC_RELOC)) |
c906108c SS |
2342 | relocatable = 1; |
2343 | ||
e39db4db | 2344 | extern_tab = XOBNEWVEC (&objfile->objfile_obstack, EXTR, hdr->iextMax); |
c906108c SS |
2345 | |
2346 | includes_allocated = 30; | |
2347 | includes_used = 0; | |
0d5cff50 DE |
2348 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2349 | sizeof (const char *)); | |
c906108c SS |
2350 | next_symbol_text_func = mdebug_next_symbol_text; |
2351 | ||
2352 | dependencies_allocated = 30; | |
2353 | dependencies_used = 0; | |
2354 | dependency_list = | |
891813be TT |
2355 | (legacy_psymtab **) alloca (dependencies_allocated * |
2356 | sizeof (legacy_psymtab *)); | |
c906108c | 2357 | |
46212e0b | 2358 | set_last_source_file (NULL); |
c906108c SS |
2359 | |
2360 | /* | |
2361 | * Big plan: | |
2362 | * | |
2363 | * Only parse the Local and External symbols, and the Relative FDR. | |
2364 | * Fixup enough of the loader symtab to be able to use it. | |
2365 | * Allocate space only for the file's portions we need to | |
025bb325 | 2366 | * look at. (XXX) |
c906108c SS |
2367 | */ |
2368 | ||
2369 | max_gdbinfo = 0; | |
2370 | max_glevel = MIN_GLEVEL; | |
2371 | ||
2372 | /* Allocate the map FDR -> PST. | |
2373 | Minor hack: -O3 images might claim some global data belongs | |
025bb325 | 2374 | to FDR -1. We`ll go along with that. */ |
5e97696c | 2375 | std::vector<struct pst_map> fdr_to_pst_holder (hdr->ifdMax + 1); |
633cf254 | 2376 | fdr_to_pst = fdr_to_pst_holder.data (); |
c906108c SS |
2377 | fdr_to_pst++; |
2378 | { | |
7b249e47 | 2379 | legacy_psymtab *new_pst = new_psymtab ("", partial_symtabs, objfile); |
b8d56208 | 2380 | |
b926417a TT |
2381 | fdr_to_pst[-1].pst = new_pst; |
2382 | FDR_IDX (new_pst) = -1; | |
c906108c SS |
2383 | } |
2384 | ||
2385 | /* Allocate the global pending list. */ | |
e39db4db SM |
2386 | pending_list = XOBNEWVEC (&objfile->objfile_obstack, mdebug_pending *, |
2387 | hdr->ifdMax); | |
12b9c64f | 2388 | memset (pending_list, 0, |
c906108c SS |
2389 | hdr->ifdMax * sizeof (struct mdebug_pending *)); |
2390 | ||
2391 | /* Pass 0 over external syms: swap them in. */ | |
633cf254 | 2392 | gdb::def_vector<EXTR> ext_block (hdr->iextMax); |
c906108c SS |
2393 | |
2394 | ext_out = (char *) debug_info->external_ext; | |
2395 | ext_out_end = ext_out + hdr->iextMax * external_ext_size; | |
633cf254 | 2396 | ext_in = ext_block.data (); |
c906108c SS |
2397 | for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) |
2398 | (*swap_ext_in) (cur_bfd, ext_out, ext_in); | |
2399 | ||
025bb325 | 2400 | /* Pass 1 over external syms: Presize and partition the list. */ |
633cf254 | 2401 | ext_in = ext_block.data (); |
c906108c SS |
2402 | ext_in_end = ext_in + hdr->iextMax; |
2403 | for (; ext_in < ext_in_end; ext_in++) | |
2404 | { | |
2405 | /* See calls to complain below. */ | |
2406 | if (ext_in->ifd >= -1 | |
2407 | && ext_in->ifd < hdr->ifdMax | |
2408 | && ext_in->asym.iss >= 0 | |
2409 | && ext_in->asym.iss < hdr->issExtMax) | |
2410 | fdr_to_pst[ext_in->ifd].n_globals++; | |
2411 | } | |
2412 | ||
025bb325 | 2413 | /* Pass 1.5 over files: partition out global symbol space. */ |
c906108c SS |
2414 | s_idx = 0; |
2415 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) | |
2416 | { | |
2417 | fdr_to_pst[f_idx].globals_offset = s_idx; | |
2418 | s_idx += fdr_to_pst[f_idx].n_globals; | |
2419 | fdr_to_pst[f_idx].n_globals = 0; | |
2420 | } | |
2421 | ||
2422 | /* ECOFF in ELF: | |
2423 | ||
2424 | For ECOFF in ELF, we skip the creation of the minimal symbols. | |
2425 | The ECOFF symbols should be a subset of the Elf symbols, and the | |
2426 | section information of the elf symbols will be more accurate. | |
2427 | FIXME! What about Irix 5's native linker? | |
2428 | ||
2429 | By default, Elf sections which don't exist in ECOFF | |
2430 | get put in ECOFF's absolute section by the gnu linker. | |
2431 | Since absolute sections don't get relocated, we | |
2432 | end up calculating an address different from that of | |
2433 | the symbol's minimal symbol (created earlier from the | |
025bb325 | 2434 | Elf symtab). |
c906108c SS |
2435 | |
2436 | To fix this, either : | |
2437 | 1) don't create the duplicate symbol | |
c5aa993b JM |
2438 | (assumes ECOFF symtab is a subset of the ELF symtab; |
2439 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2440 | 2) create it, only if lookup for existing symbol in ELF's minimal |
c5aa993b JM |
2441 | symbols fails |
2442 | (inefficient; | |
2443 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2444 | 3) create it, but lookup ELF's minimal symbol and use it's section |
85102364 | 2445 | during relocation, then modify "uniquify" phase to merge and |
c5aa993b JM |
2446 | eliminate the duplicate symbol |
2447 | (highly inefficient) | |
c906108c SS |
2448 | |
2449 | I've implemented #1 here... | |
2450 | Skip the creation of the minimal symbols based on the ECOFF | |
025bb325 | 2451 | symbol table. */ |
c906108c | 2452 | |
025bb325 | 2453 | /* Pass 2 over external syms: fill in external symbols. */ |
633cf254 | 2454 | ext_in = ext_block.data (); |
c5aa993b JM |
2455 | ext_in_end = ext_in + hdr->iextMax; |
2456 | for (; ext_in < ext_in_end; ext_in++) | |
2457 | { | |
2458 | enum minimal_symbol_type ms_type = mst_text; | |
9675da25 | 2459 | unrelocated_addr svalue = unrelocated_addr (ext_in->asym.value); |
c906108c | 2460 | |
c5aa993b | 2461 | /* The Irix 5 native tools seem to sometimes generate bogus |
dda83cd7 | 2462 | external symbols. */ |
c5aa993b JM |
2463 | if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax) |
2464 | { | |
b98664d3 | 2465 | complaint (_("bad ifd for external symbol: %d (max %ld)"), |
3e43a32a | 2466 | ext_in->ifd, hdr->ifdMax); |
c5aa993b JM |
2467 | continue; |
2468 | } | |
2469 | if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax) | |
2470 | { | |
b98664d3 | 2471 | complaint (_("bad iss for external symbol: %ld (max %ld)"), |
23136709 | 2472 | ext_in->asym.iss, hdr->issExtMax); |
c5aa993b JM |
2473 | continue; |
2474 | } | |
c906108c | 2475 | |
c5aa993b JM |
2476 | extern_tab[fdr_to_pst[ext_in->ifd].globals_offset |
2477 | + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; | |
c906108c SS |
2478 | |
2479 | ||
c5aa993b JM |
2480 | if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil) |
2481 | continue; | |
c906108c | 2482 | |
c906108c | 2483 | |
025bb325 | 2484 | /* Pass 3 over files, over local syms: fill in static symbols. */ |
c5aa993b JM |
2485 | name = debug_info->ssext + ext_in->asym.iss; |
2486 | ||
025bb325 | 2487 | /* Process ECOFF Symbol Types and Storage Classes. */ |
c5aa993b JM |
2488 | switch (ext_in->asym.st) |
2489 | { | |
2490 | case stProc: | |
2491 | /* Beginnning of Procedure */ | |
c5aa993b JM |
2492 | break; |
2493 | case stStaticProc: | |
2494 | /* Load time only static procs */ | |
2495 | ms_type = mst_file_text; | |
c5aa993b JM |
2496 | break; |
2497 | case stGlobal: | |
2498 | /* External symbol */ | |
2499 | if (SC_IS_COMMON (ext_in->asym.sc)) | |
2500 | { | |
2501 | /* The value of a common symbol is its size, not its address. | |
dda83cd7 | 2502 | Ignore it. */ |
c906108c | 2503 | continue; |
c5aa993b JM |
2504 | } |
2505 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2506 | { | |
2507 | ms_type = mst_data; | |
c5aa993b JM |
2508 | } |
2509 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2510 | { | |
2511 | ms_type = mst_bss; | |
c5aa993b | 2512 | } |
dda83cd7 SM |
2513 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2514 | { | |
2515 | ms_type = mst_bss; | |
2516 | } | |
c5aa993b JM |
2517 | else |
2518 | ms_type = mst_abs; | |
2519 | break; | |
2520 | case stLabel: | |
2521 | /* Label */ | |
0e931cf0 | 2522 | |
dda83cd7 SM |
2523 | /* On certain platforms, some extra label symbols can be |
2524 | generated by the linker. One possible usage for this kind | |
2525 | of symbols is to represent the address of the begining of a | |
2526 | given section. For instance, on Tru64 5.1, the address of | |
2527 | the _ftext label is the start address of the .text section. | |
2528 | ||
2529 | The storage class of these symbols is usually directly | |
2530 | related to the section to which the symbol refers. For | |
2531 | instance, on Tru64 5.1, the storage class for the _fdata | |
2532 | label is scData, refering to the .data section. | |
2533 | ||
2534 | It is actually possible that the section associated to the | |
2535 | storage class of the label does not exist. On True64 5.1 | |
2536 | for instance, the libm.so shared library does not contain | |
2537 | any .data section, although it contains a _fpdata label | |
2538 | which storage class is scData... Since these symbols are | |
2539 | usually useless for the debugger user anyway, we just | |
2540 | discard these symbols. */ | |
2541 | ||
c5aa993b JM |
2542 | if (SC_IS_TEXT (ext_in->asym.sc)) |
2543 | { | |
dda83cd7 SM |
2544 | if (objfile->sect_index_text == -1) |
2545 | continue; | |
2546 | ||
c5aa993b | 2547 | ms_type = mst_file_text; |
c5aa993b JM |
2548 | } |
2549 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2550 | { | |
dda83cd7 SM |
2551 | if (objfile->sect_index_data == -1) |
2552 | continue; | |
0e931cf0 | 2553 | |
c5aa993b | 2554 | ms_type = mst_file_data; |
c5aa993b JM |
2555 | } |
2556 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2557 | { | |
dda83cd7 SM |
2558 | if (objfile->sect_index_bss == -1) |
2559 | continue; | |
0e931cf0 | 2560 | |
c5aa993b | 2561 | ms_type = mst_file_bss; |
c5aa993b | 2562 | } |
dda83cd7 SM |
2563 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2564 | { | |
2565 | const int sbss_sect_index = get_section_index (objfile, ".sbss"); | |
0e931cf0 | 2566 | |
dda83cd7 SM |
2567 | if (sbss_sect_index == -1) |
2568 | continue; | |
0e931cf0 | 2569 | |
dda83cd7 SM |
2570 | ms_type = mst_file_bss; |
2571 | } | |
c5aa993b JM |
2572 | else |
2573 | ms_type = mst_abs; | |
2574 | break; | |
2575 | case stLocal: | |
2576 | case stNil: | |
2577 | /* The alpha has the section start addresses in stLocal symbols | |
025bb325 | 2578 | whose name starts with a `.'. Skip those but complain for all |
c5aa993b JM |
2579 | other stLocal symbols. |
2580 | Irix6 puts the section start addresses in stNil symbols, skip | |
025bb325 | 2581 | those too. */ |
c5aa993b JM |
2582 | if (name[0] == '.') |
2583 | continue; | |
2584 | /* Fall through. */ | |
2585 | default: | |
2586 | ms_type = mst_unknown; | |
23136709 | 2587 | unknown_ext_complaint (name); |
c5aa993b JM |
2588 | } |
2589 | if (!ECOFF_IN_ELF (cur_bfd)) | |
dda83cd7 SM |
2590 | record_minimal_symbol (reader, name, svalue, ms_type, ext_in->asym.sc, |
2591 | objfile); | |
c5aa993b | 2592 | } |
c906108c | 2593 | |
025bb325 | 2594 | /* Pass 3 over files, over local syms: fill in static symbols. */ |
c906108c SS |
2595 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) |
2596 | { | |
891813be | 2597 | legacy_psymtab *save_pst; |
c906108c | 2598 | EXTR *ext_ptr; |
584d0cda | 2599 | unrelocated_addr textlow; |
c906108c SS |
2600 | |
2601 | cur_fdr = fh = debug_info->fdr + f_idx; | |
2602 | ||
2603 | if (fh->csym == 0) | |
2604 | { | |
2605 | fdr_to_pst[f_idx].pst = NULL; | |
2606 | continue; | |
2607 | } | |
2608 | ||
2609 | /* Determine the start address for this object file from the | |
dda83cd7 | 2610 | file header and relocate it, except for Irix 5.2 zero fh->adr. */ |
c906108c | 2611 | if (fh->cpd) |
584d0cda | 2612 | textlow = unrelocated_addr (fh->adr); |
c906108c | 2613 | else |
584d0cda | 2614 | textlow = unrelocated_addr (0); |
0072c873 SM |
2615 | pst = new legacy_psymtab (fdr_name (fh), partial_symtabs, |
2616 | objfile->per_bfd, textlow); | |
77845a9a TT |
2617 | pst->read_symtab_private = XOBNEW (&objfile->objfile_obstack, md_symloc); |
2618 | memset (pst->read_symtab_private, 0, sizeof (struct md_symloc)); | |
c906108c SS |
2619 | |
2620 | save_pst = pst; | |
2621 | FDR_IDX (pst) = f_idx; | |
2622 | CUR_BFD (pst) = cur_bfd; | |
2623 | DEBUG_SWAP (pst) = debug_swap; | |
2624 | DEBUG_INFO (pst) = debug_info; | |
2625 | PENDING_LIST (pst) = pending_list; | |
2626 | ||
025bb325 | 2627 | /* The way to turn this into a symtab is to call... */ |
891813be | 2628 | pst->legacy_read_symtab = mdebug_read_symtab; |
69b037c3 | 2629 | pst->legacy_expand_psymtab = mdebug_expand_psymtab; |
c906108c SS |
2630 | |
2631 | /* Set up language for the pst. | |
33b5899f | 2632 | The language from the FDR is used if it is unambiguous (e.g. cfront |
dda83cd7 SM |
2633 | with native cc and g++ will set the language to C). |
2634 | Otherwise we have to deduce the language from the filename. | |
2635 | Native ecoff has every header file in a separate FDR, so | |
2636 | deduce_language_from_filename will return language_unknown for | |
2637 | a header file, which is not what we want. | |
2638 | But the FDRs for the header files are after the FDR for the source | |
2639 | file, so we can assign the language of the source file to the | |
2640 | following header files. Then we save the language in the private | |
2641 | pst data so that we can reuse it when building symtabs. */ | |
c906108c SS |
2642 | prev_language = psymtab_language; |
2643 | ||
2644 | switch (fh->lang) | |
2645 | { | |
2646 | case langCplusplusV2: | |
2647 | psymtab_language = language_cplus; | |
2648 | break; | |
2649 | default: | |
2650 | psymtab_language = deduce_language_from_filename (fdr_name (fh)); | |
2651 | break; | |
2652 | } | |
2653 | if (psymtab_language == language_unknown) | |
2654 | psymtab_language = prev_language; | |
2655 | PST_PRIVATE (pst)->pst_language = psymtab_language; | |
2656 | ||
93d50cd8 | 2657 | pst->set_text_high (pst->unrelocated_text_low ()); |
c906108c SS |
2658 | |
2659 | /* For stabs-in-ecoff files, the second symbol must be @stab. | |
dda83cd7 SM |
2660 | This symbol is emitted by mips-tfile to signal that the |
2661 | current object file uses encapsulated stabs instead of mips | |
2662 | ecoff for local symbols. (It is the second symbol because | |
2663 | the first symbol is the stFile used to signal the start of a | |
2664 | file). */ | |
c906108c SS |
2665 | processing_gcc_compilation = 0; |
2666 | if (fh->csym >= 2) | |
2667 | { | |
2668 | (*swap_sym_in) (cur_bfd, | |
2669 | ((char *) debug_info->external_sym | |
2670 | + (fh->isymBase + 1) * external_sym_size), | |
2671 | &sh); | |
ee300cd4 AC |
2672 | if (strcmp (debug_info->ss + fh->issBase + sh.iss, |
2673 | stabs_symbol) == 0) | |
c906108c SS |
2674 | processing_gcc_compilation = 2; |
2675 | } | |
2676 | ||
2677 | if (processing_gcc_compilation != 0) | |
2678 | { | |
2679 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
2680 | { | |
2681 | int type_code; | |
0d5cff50 | 2682 | const char *namestring; |
c906108c SS |
2683 | |
2684 | (*swap_sym_in) (cur_bfd, | |
2685 | (((char *) debug_info->external_sym) | |
c5aa993b | 2686 | + (fh->isymBase + cur_sdx) * external_sym_size), |
c906108c SS |
2687 | &sh); |
2688 | type_code = ECOFF_UNMARK_STAB (sh.index); | |
2689 | if (!ECOFF_IS_STAB (&sh)) | |
2690 | { | |
2691 | if (sh.st == stProc || sh.st == stStaticProc) | |
2692 | { | |
584d0cda | 2693 | unrelocated_addr procaddr; |
c906108c | 2694 | long isym; |
c5aa993b | 2695 | |
c906108c SS |
2696 | if (sh.st == stStaticProc) |
2697 | { | |
2698 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
9675da25 TT |
2699 | record_minimal_symbol (reader, namestring, |
2700 | unrelocated_addr (sh.value), | |
dda83cd7 SM |
2701 | mst_file_text, sh.sc, |
2702 | objfile); | |
c906108c | 2703 | } |
584d0cda | 2704 | procaddr = unrelocated_addr (sh.value); |
c906108c SS |
2705 | |
2706 | isym = AUX_GET_ISYM (fh->fBigendian, | |
2707 | (debug_info->external_aux | |
2708 | + fh->iauxBase | |
2709 | + sh.index)); | |
2710 | (*swap_sym_in) (cur_bfd, | |
2711 | ((char *) debug_info->external_sym | |
2712 | + ((fh->isymBase + isym - 1) | |
2713 | * external_sym_size)), | |
2714 | &sh); | |
2715 | if (sh.st == stEnd) | |
2716 | { | |
584d0cda TT |
2717 | unrelocated_addr high |
2718 | = unrelocated_addr (CORE_ADDR (procaddr) | |
2719 | + sh.value); | |
c906108c | 2720 | |
c5aa993b | 2721 | /* Kludge for Irix 5.2 zero fh->adr. */ |
c906108c | 2722 | if (!relocatable |
52948f01 | 2723 | && (!pst->text_low_valid |
93d50cd8 | 2724 | || procaddr < pst->unrelocated_text_low ())) |
4ae976d1 | 2725 | pst->set_text_low (procaddr); |
93d50cd8 | 2726 | if (high > pst->unrelocated_text_high ()) |
4ae976d1 | 2727 | pst->set_text_high (high); |
c906108c SS |
2728 | } |
2729 | } | |
2730 | else if (sh.st == stStatic) | |
2731 | { | |
2732 | switch (sh.sc) | |
2733 | { | |
2734 | case scUndefined: | |
2735 | case scSUndefined: | |
2736 | case scNil: | |
2737 | case scAbs: | |
2738 | break; | |
2739 | ||
2740 | case scData: | |
2741 | case scSData: | |
2742 | case scRData: | |
2743 | case scPData: | |
2744 | case scXData: | |
2745 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
9675da25 TT |
2746 | record_minimal_symbol (reader, namestring, |
2747 | unrelocated_addr (sh.value), | |
dda83cd7 SM |
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; |
9675da25 TT |
2756 | record_minimal_symbol (reader, namestring, |
2757 | unrelocated_addr (sh.value), | |
dda83cd7 SM |
2758 | mst_file_bss, sh.sc, |
2759 | objfile); | |
c906108c SS |
2760 | break; |
2761 | } | |
2762 | } | |
2763 | continue; | |
2764 | } | |
025bb325 | 2765 | /* Handle stabs continuation. */ |
c906108c SS |
2766 | { |
2767 | char *stabstring = debug_info->ss + fh->issBase + sh.iss; | |
36cb7237 PA |
2768 | /* If we need to heap-allocate STABSTRING, this owns |
2769 | it. */ | |
2770 | gdb::unique_xmalloc_ptr<char> stabstring_storage; | |
c906108c | 2771 | int len = strlen (stabstring); |
b8d56208 | 2772 | |
c5aa993b | 2773 | while (stabstring[len - 1] == '\\') |
c906108c SS |
2774 | { |
2775 | SYMR sh2; | |
2776 | char *stabstring1 = stabstring; | |
2777 | char *stabstring2; | |
2778 | int len2; | |
2779 | ||
025bb325 | 2780 | /* Ignore continuation char from 1st string. */ |
c906108c SS |
2781 | len--; |
2782 | ||
025bb325 | 2783 | /* Read next stabstring. */ |
c906108c SS |
2784 | cur_sdx++; |
2785 | (*swap_sym_in) (cur_bfd, | |
2786 | (((char *) debug_info->external_sym) | |
c5aa993b | 2787 | + (fh->isymBase + cur_sdx) |
c906108c SS |
2788 | * external_sym_size), |
2789 | &sh2); | |
2790 | stabstring2 = debug_info->ss + fh->issBase + sh2.iss; | |
2791 | len2 = strlen (stabstring2); | |
2792 | ||
36cb7237 PA |
2793 | /* Concatenate stabstring2 with stabstring1. */ |
2794 | if (stabstring_storage != nullptr) | |
2795 | { | |
2796 | stabstring_storage.reset | |
2797 | ((char *) xrealloc (stabstring_storage.release (), | |
2798 | len + len2 + 1)); | |
2799 | stabstring = stabstring_storage.get (); | |
2800 | } | |
c906108c | 2801 | else |
86f902e0 | 2802 | { |
36cb7237 PA |
2803 | stabstring_storage.reset |
2804 | ((char *) xmalloc (len + len2 + 1)); | |
2805 | stabstring = stabstring_storage.get (); | |
86f902e0 FF |
2806 | strcpy (stabstring, stabstring1); |
2807 | } | |
c906108c SS |
2808 | strcpy (stabstring + len, stabstring2); |
2809 | len += len2; | |
2810 | } | |
2811 | ||
d3119d1e EZ |
2812 | switch (type_code) |
2813 | { | |
a121b7c1 | 2814 | const char *p; |
b8d56208 | 2815 | |
3e43a32a | 2816 | /* Standard, external, non-debugger, symbols. */ |
d3119d1e EZ |
2817 | |
2818 | case N_TEXT | N_EXT: | |
2819 | case N_NBTEXT | N_EXT: | |
d3119d1e EZ |
2820 | goto record_it; |
2821 | ||
2822 | case N_DATA | N_EXT: | |
2823 | case N_NBDATA | N_EXT: | |
d3119d1e EZ |
2824 | goto record_it; |
2825 | ||
2826 | case N_BSS: | |
2827 | case N_BSS | N_EXT: | |
2828 | case N_NBBSS | N_EXT: | |
025bb325 | 2829 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ |
d3119d1e EZ |
2830 | goto record_it; |
2831 | ||
2832 | case N_ABS | N_EXT: | |
2833 | record_it: | |
b98bd911 | 2834 | continue; |
d3119d1e | 2835 | |
025bb325 | 2836 | /* Standard, local, non-debugger, symbols. */ |
d3119d1e EZ |
2837 | |
2838 | case N_NBTEXT: | |
2839 | ||
3e43a32a MS |
2840 | /* We need to be able to deal with both N_FN or |
2841 | N_TEXT, because we have no way of knowing | |
2842 | whether the sys-supplied ld or GNU ld was used | |
2843 | to make the executable. Sequents throw in | |
2844 | another wrinkle -- they renumbered N_FN. */ | |
d3119d1e EZ |
2845 | |
2846 | case N_FN: | |
2847 | case N_FN_SEQ: | |
2848 | case N_TEXT: | |
2849 | continue; | |
2850 | ||
2851 | case N_DATA: | |
d3119d1e EZ |
2852 | goto record_it; |
2853 | ||
2854 | case N_UNDF | N_EXT: | |
025bb325 | 2855 | continue; /* Just undefined, not COMMON. */ |
d3119d1e EZ |
2856 | |
2857 | case N_UNDF: | |
2858 | continue; | |
2859 | ||
2860 | /* Lots of symbol types we can just ignore. */ | |
2861 | ||
2862 | case N_ABS: | |
2863 | case N_NBDATA: | |
2864 | case N_NBBSS: | |
2865 | continue; | |
2866 | ||
025bb325 | 2867 | /* Keep going . . . */ |
d3119d1e EZ |
2868 | |
2869 | /* | |
2870 | * Special symbol types for GNU | |
2871 | */ | |
2872 | case N_INDR: | |
2873 | case N_INDR | N_EXT: | |
2874 | case N_SETA: | |
2875 | case N_SETA | N_EXT: | |
2876 | case N_SETT: | |
2877 | case N_SETT | N_EXT: | |
2878 | case N_SETD: | |
2879 | case N_SETD | N_EXT: | |
2880 | case N_SETB: | |
2881 | case N_SETB | N_EXT: | |
2882 | case N_SETV: | |
2883 | continue; | |
2884 | ||
2885 | /* | |
2886 | * Debugger symbols | |
2887 | */ | |
2888 | ||
2889 | case N_SO: | |
2890 | { | |
d3119d1e | 2891 | static int prev_so_symnum = -10; |
b926417a | 2892 | const char *basename; |
d3119d1e | 2893 | |
3e43a32a | 2894 | /* A zero value is probably an indication for the |
8763cede | 2895 | SunPRO 3.0 compiler. dbx_end_psymtab explicitly tests |
3e43a32a | 2896 | for zero, so don't relocate it. */ |
d3119d1e | 2897 | |
203c3895 | 2898 | if (sh.value == 0 |
5e2b427d | 2899 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
78cc6c2d | 2900 | textlow_not_set = 1; |
d3119d1e EZ |
2901 | else |
2902 | textlow_not_set = 0; | |
203c3895 | 2903 | |
d3119d1e | 2904 | if (prev_so_symnum != symnum - 1) |
025bb325 | 2905 | { /* Here if prev stab wasn't N_SO. */ |
d3119d1e EZ |
2906 | if (pst) |
2907 | { | |
891813be | 2908 | pst = (legacy_psymtab *) 0; |
d3119d1e EZ |
2909 | includes_used = 0; |
2910 | dependencies_used = 0; | |
2911 | } | |
2912 | } | |
2913 | ||
2914 | prev_so_symnum = symnum; | |
c906108c | 2915 | |
025bb325 MS |
2916 | /* End the current partial symtab and start a |
2917 | new one. */ | |
d3119d1e EZ |
2918 | |
2919 | /* SET_NAMESTRING ();*/ | |
2920 | namestring = stabstring; | |
2921 | ||
3e43a32a | 2922 | /* Null name means end of .o file. Don't start a new |
025bb325 | 2923 | one. */ |
d3119d1e EZ |
2924 | if (*namestring == '\000') |
2925 | continue; | |
2926 | ||
3e43a32a MS |
2927 | /* Some compilers (including gcc) emit a pair of |
2928 | initial N_SOs. The first one is a directory name; | |
2929 | the second the file name. If pst exists, is | |
2930 | empty, and has a filename ending in '/', we assume | |
025bb325 | 2931 | the previous N_SO was a directory name. */ |
b926417a TT |
2932 | basename = lbasename (namestring); |
2933 | if (basename != namestring && *basename == '\000') | |
3e43a32a | 2934 | continue; /* Simply ignore directory |
025bb325 | 2935 | name SOs. */ |
d3119d1e | 2936 | |
3e43a32a MS |
2937 | /* Some other compilers (C++ ones in particular) emit |
2938 | useless SOs for non-existant .c files. We ignore | |
2939 | all subsequent SOs that immediately follow the | |
2940 | first. */ | |
d3119d1e EZ |
2941 | |
2942 | if (!pst) | |
2943 | pst = save_pst; | |
2944 | continue; | |
2945 | } | |
2946 | ||
2947 | case N_BINCL: | |
2948 | continue; | |
2949 | ||
2950 | case N_SOL: | |
2951 | { | |
2952 | enum language tmp_language; | |
b8d56208 | 2953 | |
025bb325 | 2954 | /* Mark down an include file in the current psymtab. */ |
d3119d1e | 2955 | |
025bb325 | 2956 | /* SET_NAMESTRING (); */ |
d3119d1e EZ |
2957 | namestring = stabstring; |
2958 | ||
3e43a32a MS |
2959 | tmp_language |
2960 | = deduce_language_from_filename (namestring); | |
d3119d1e | 2961 | |
3e43a32a MS |
2962 | /* Only change the psymtab's language if we've |
2963 | learned something useful (eg. tmp_language is not | |
2964 | language_unknown). In addition, to match what | |
2965 | start_subfile does, never change from C++ to | |
2966 | C. */ | |
d3119d1e EZ |
2967 | if (tmp_language != language_unknown |
2968 | && (tmp_language != language_c | |
2969 | || psymtab_language != language_cplus)) | |
2970 | psymtab_language = tmp_language; | |
2971 | ||
3e43a32a MS |
2972 | /* In C++, one may expect the same filename to come |
2973 | round many times, when code is coming alternately | |
2974 | from the main file and from inline functions in | |
025bb325 | 2975 | other files. So I check to see if this is a file |
3e43a32a MS |
2976 | we've seen before -- either the main source file, |
2977 | or a previously included file. | |
2978 | ||
2979 | This seems to be a lot of time to be spending on | |
2980 | N_SOL, but things like "break c-exp.y:435" need to | |
2981 | work (I suppose the psymtab_include_list could be | |
2982 | hashed or put in a binary tree, if profiling shows | |
2983 | this is a major hog). */ | |
0ba1096a | 2984 | if (pst && filename_cmp (namestring, pst->filename) == 0) |
d3119d1e | 2985 | continue; |
b8d56208 | 2986 | |
d3119d1e | 2987 | { |
aa1ee363 | 2988 | int i; |
b8d56208 | 2989 | |
d3119d1e | 2990 | for (i = 0; i < includes_used; i++) |
0ba1096a KT |
2991 | if (filename_cmp (namestring, |
2992 | psymtab_include_list[i]) == 0) | |
d3119d1e EZ |
2993 | { |
2994 | i = -1; | |
2995 | break; | |
2996 | } | |
2997 | if (i == -1) | |
2998 | continue; | |
2999 | } | |
3000 | ||
3001 | psymtab_include_list[includes_used++] = namestring; | |
3002 | if (includes_used >= includes_allocated) | |
3003 | { | |
0d5cff50 | 3004 | const char **orig = psymtab_include_list; |
d3119d1e | 3005 | |
0d5cff50 | 3006 | psymtab_include_list = (const char **) |
d3119d1e | 3007 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 3008 | sizeof (const char *)); |
4efb68b1 | 3009 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 3010 | includes_used * sizeof (const char *)); |
d3119d1e EZ |
3011 | } |
3012 | continue; | |
3013 | } | |
025bb325 | 3014 | case N_LSYM: /* Typedef or automatic variable. */ |
3e43a32a MS |
3015 | case N_STSYM: /* Data seg var -- static */ |
3016 | case N_LCSYM: /* BSS " */ | |
3017 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
3018 | case N_NBSTS: /* Gould nobase. */ | |
3019 | case N_NBLCS: /* symbols. */ | |
d3119d1e | 3020 | case N_FUN: |
3e43a32a MS |
3021 | case N_GSYM: /* Global (extern) variable; can be |
3022 | data or bss (sigh FIXME). */ | |
d3119d1e EZ |
3023 | |
3024 | /* Following may probably be ignored; I'll leave them here | |
3025 | for now (until I do Pascal and Modula 2 extensions). */ | |
3026 | ||
3e43a32a MS |
3027 | case N_PC: /* I may or may not need this; I |
3028 | suspect not. */ | |
3029 | case N_M2C: /* I suspect that I can ignore this | |
025bb325 MS |
3030 | here. */ |
3031 | case N_SCOPE: /* Same. */ | |
d3119d1e | 3032 | |
025bb325 | 3033 | /* SET_NAMESTRING (); */ |
d3119d1e EZ |
3034 | namestring = stabstring; |
3035 | p = (char *) strchr (namestring, ':'); | |
3036 | if (!p) | |
025bb325 | 3037 | continue; /* Not a debugging symbol. */ |
d3119d1e EZ |
3038 | |
3039 | ||
3040 | ||
3041 | /* Main processing section for debugging symbols which | |
3e43a32a MS |
3042 | the initial read through the symbol tables needs to |
3043 | worry about. If we reach this point, the symbol | |
3044 | which we are considering is definitely one we are | |
3045 | interested in. p must also contain the (valid) | |
3046 | index into the namestring which indicates the | |
3047 | debugging type symbol. */ | |
d3119d1e EZ |
3048 | |
3049 | switch (p[1]) | |
3050 | { | |
3051 | case 'S': | |
932539d7 TT |
3052 | pst->add_psymbol (gdb::string_view (namestring, |
3053 | p - namestring), | |
3054 | true, VAR_DOMAIN, LOC_STATIC, | |
3055 | SECT_OFF_DATA (objfile), | |
3056 | psymbol_placement::STATIC, | |
1ee8702d | 3057 | unrelocated_addr (sh.value), |
7b249e47 TT |
3058 | psymtab_language, |
3059 | partial_symtabs, objfile); | |
d3119d1e EZ |
3060 | continue; |
3061 | case 'G': | |
025bb325 MS |
3062 | /* The addresses in these entries are reported |
3063 | to be wrong. See the code that reads 'G's | |
3064 | for symtabs. */ | |
932539d7 TT |
3065 | pst->add_psymbol (gdb::string_view (namestring, |
3066 | p - namestring), | |
3067 | true, VAR_DOMAIN, LOC_STATIC, | |
3068 | SECT_OFF_DATA (objfile), | |
3069 | psymbol_placement::GLOBAL, | |
1ee8702d | 3070 | unrelocated_addr (sh.value), |
7b249e47 TT |
3071 | psymtab_language, |
3072 | partial_symtabs, objfile); | |
d3119d1e EZ |
3073 | continue; |
3074 | ||
3075 | case 'T': | |
3076 | /* When a 'T' entry is defining an anonymous enum, it | |
3077 | may have a name which is the empty string, or a | |
3078 | single space. Since they're not really defining a | |
3079 | symbol, those shouldn't go in the partial symbol | |
3080 | table. We do pick up the elements of such enums at | |
3081 | 'check_enum:', below. */ | |
3082 | if (p >= namestring + 2 | |
3083 | || (p == namestring + 1 | |
3084 | && namestring[0] != ' ')) | |
3085 | { | |
932539d7 | 3086 | pst->add_psymbol |
31edb802 CB |
3087 | (gdb::string_view (namestring, p - namestring), |
3088 | true, STRUCT_DOMAIN, LOC_TYPEDEF, -1, | |
1ee8702d TT |
3089 | psymbol_placement::STATIC, |
3090 | unrelocated_addr (0), | |
3091 | psymtab_language, | |
7b249e47 | 3092 | partial_symtabs, objfile); |
d3119d1e EZ |
3093 | if (p[2] == 't') |
3094 | { | |
3095 | /* Also a typedef with the same name. */ | |
932539d7 | 3096 | pst->add_psymbol |
31edb802 CB |
3097 | (gdb::string_view (namestring, |
3098 | p - namestring), | |
3099 | true, VAR_DOMAIN, LOC_TYPEDEF, -1, | |
1ee8702d TT |
3100 | psymbol_placement::STATIC, |
3101 | unrelocated_addr (0), | |
7b249e47 TT |
3102 | psymtab_language, |
3103 | partial_symtabs, objfile); | |
d3119d1e EZ |
3104 | p += 1; |
3105 | } | |
d3119d1e EZ |
3106 | } |
3107 | goto check_enum; | |
3108 | case 't': | |
3e43a32a | 3109 | if (p != namestring) /* a name is there, not |
025bb325 | 3110 | just :T... */ |
d3119d1e | 3111 | { |
932539d7 | 3112 | pst->add_psymbol |
31edb802 CB |
3113 | (gdb::string_view (namestring, |
3114 | p - namestring), | |
3115 | true, VAR_DOMAIN, LOC_TYPEDEF, -1, | |
1ee8702d TT |
3116 | psymbol_placement::STATIC, |
3117 | unrelocated_addr (0), | |
3118 | psymtab_language, | |
7b249e47 | 3119 | partial_symtabs, objfile); |
d3119d1e EZ |
3120 | } |
3121 | check_enum: | |
3e43a32a MS |
3122 | /* If this is an enumerated type, we need to add |
3123 | all the enum constants to the partial symbol | |
3124 | table. This does not cover enums without names, | |
025bb325 | 3125 | e.g. "enum {a, b} c;" in C, but fortunately |
3e43a32a MS |
3126 | those are rare. There is no way for GDB to find |
3127 | those from the enum type without spending too | |
3128 | much time on it. Thus to solve this problem, | |
3129 | the compiler needs to put out the enum in a | |
3130 | nameless type. GCC2 does this. */ | |
d3119d1e EZ |
3131 | |
3132 | /* We are looking for something of the form | |
3133 | <name> ":" ("t" | "T") [<number> "="] "e" | |
3134 | {<constant> ":" <value> ","} ";". */ | |
3135 | ||
3136 | /* Skip over the colon and the 't' or 'T'. */ | |
3137 | p += 2; | |
3e43a32a MS |
3138 | /* This type may be given a number. Also, numbers |
3139 | can come in pairs like (0,26). Skip over it. */ | |
d3119d1e EZ |
3140 | while ((*p >= '0' && *p <= '9') |
3141 | || *p == '(' || *p == ',' || *p == ')' | |
3142 | || *p == '=') | |
3143 | p++; | |
3144 | ||
3145 | if (*p++ == 'e') | |
3146 | { | |
3e43a32a MS |
3147 | /* The aix4 compiler emits extra crud before |
3148 | the members. */ | |
d3119d1e EZ |
3149 | if (*p == '-') |
3150 | { | |
3151 | /* Skip over the type (?). */ | |
3152 | while (*p != ':') | |
3153 | p++; | |
3154 | ||
3155 | /* Skip over the colon. */ | |
3156 | p++; | |
3157 | } | |
3158 | ||
3159 | /* We have found an enumerated type. */ | |
3160 | /* According to comments in read_enum_type | |
3161 | a comma could end it instead of a semicolon. | |
3162 | I don't know where that happens. | |
3163 | Accept either. */ | |
3164 | while (*p && *p != ';' && *p != ',') | |
3165 | { | |
a121b7c1 | 3166 | const char *q; |
d3119d1e | 3167 | |
3e43a32a MS |
3168 | /* Check for and handle cretinous dbx |
3169 | symbol name continuation! */ | |
d3119d1e EZ |
3170 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) |
3171 | p = next_symbol_text (objfile); | |
3172 | ||
3173 | /* Point to the character after the name | |
3174 | of the enum constant. */ | |
3175 | for (q = p; *q && *q != ':'; q++) | |
3176 | ; | |
3177 | /* Note that the value doesn't matter for | |
3e43a32a MS |
3178 | enum constants in psymtabs, just in |
3179 | symtabs. */ | |
932539d7 TT |
3180 | pst->add_psymbol (gdb::string_view (p, |
3181 | q - p), | |
3182 | true, VAR_DOMAIN, | |
3183 | LOC_CONST, -1, | |
3184 | psymbol_placement::STATIC, | |
1ee8702d TT |
3185 | unrelocated_addr (0), |
3186 | psymtab_language, | |
7b249e47 | 3187 | partial_symtabs, objfile); |
d3119d1e EZ |
3188 | /* Point past the name. */ |
3189 | p = q; | |
3190 | /* Skip over the value. */ | |
3191 | while (*p && *p != ',') | |
3192 | p++; | |
3193 | /* Advance past the comma. */ | |
3194 | if (*p) | |
3195 | p++; | |
3196 | } | |
3197 | } | |
3198 | continue; | |
3199 | case 'c': | |
3200 | /* Constant, e.g. from "const" in Pascal. */ | |
932539d7 TT |
3201 | pst->add_psymbol (gdb::string_view (namestring, |
3202 | p - namestring), | |
3203 | true, VAR_DOMAIN, LOC_CONST, -1, | |
3204 | psymbol_placement::STATIC, | |
1ee8702d TT |
3205 | unrelocated_addr (0), |
3206 | psymtab_language, | |
7b249e47 | 3207 | partial_symtabs, objfile); |
d3119d1e EZ |
3208 | continue; |
3209 | ||
3210 | case 'f': | |
3211 | if (! pst) | |
3212 | { | |
795afcbb TT |
3213 | std::string copy (namestring, p); |
3214 | function_outside_compilation_unit_complaint | |
3215 | (copy.c_str ()); | |
d3119d1e | 3216 | } |
932539d7 TT |
3217 | pst->add_psymbol (gdb::string_view (namestring, |
3218 | p - namestring), | |
3219 | true, VAR_DOMAIN, LOC_BLOCK, | |
3220 | SECT_OFF_TEXT (objfile), | |
3221 | psymbol_placement::STATIC, | |
1ee8702d | 3222 | unrelocated_addr (sh.value), |
7b249e47 TT |
3223 | psymtab_language, |
3224 | partial_symtabs, objfile); | |
d3119d1e EZ |
3225 | continue; |
3226 | ||
3227 | /* Global functions were ignored here, but now they | |
3e43a32a MS |
3228 | are put into the global psymtab like one would |
3229 | expect. They're also in the minimal symbol | |
3230 | table. */ | |
d3119d1e EZ |
3231 | case 'F': |
3232 | if (! pst) | |
3233 | { | |
795afcbb TT |
3234 | std::string copy (namestring, p); |
3235 | function_outside_compilation_unit_complaint | |
3236 | (copy.c_str ()); | |
d3119d1e | 3237 | } |
932539d7 TT |
3238 | pst->add_psymbol (gdb::string_view (namestring, |
3239 | p - namestring), | |
3240 | true, VAR_DOMAIN, LOC_BLOCK, | |
3241 | SECT_OFF_TEXT (objfile), | |
3242 | psymbol_placement::GLOBAL, | |
1ee8702d | 3243 | unrelocated_addr (sh.value), |
7b249e47 TT |
3244 | psymtab_language, |
3245 | partial_symtabs, objfile); | |
d3119d1e EZ |
3246 | continue; |
3247 | ||
3e43a32a MS |
3248 | /* Two things show up here (hopefully); static |
3249 | symbols of local scope (static used inside | |
3250 | braces) or extensions of structure symbols. We | |
3251 | can ignore both. */ | |
d3119d1e EZ |
3252 | case 'V': |
3253 | case '(': | |
3254 | case '0': | |
3255 | case '1': | |
3256 | case '2': | |
3257 | case '3': | |
3258 | case '4': | |
3259 | case '5': | |
3260 | case '6': | |
3261 | case '7': | |
3262 | case '8': | |
3263 | case '9': | |
3264 | case '-': | |
3e43a32a MS |
3265 | case '#': /* For symbol identification (used |
3266 | in live ranges). */ | |
d3119d1e EZ |
3267 | continue; |
3268 | ||
3269 | case ':': | |
3e43a32a MS |
3270 | /* It is a C++ nested symbol. We don't need to |
3271 | record it (I don't think); if we try to look up | |
3272 | foo::bar::baz, then symbols for the symtab | |
3273 | containing foo should get read in, I think. */ | |
d3119d1e EZ |
3274 | /* Someone says sun cc puts out symbols like |
3275 | /foo/baz/maclib::/usr/local/bin/maclib, | |
3276 | which would get here with a symbol type of ':'. */ | |
3277 | continue; | |
3278 | ||
3279 | default: | |
3e43a32a MS |
3280 | /* Unexpected symbol descriptor. The second and |
3281 | subsequent stabs of a continued stab can show up | |
3282 | here. The question is whether they ever can | |
3283 | mimic a normal stab--it would be nice if not, | |
3284 | since we certainly don't want to spend the time | |
3285 | searching to the end of every string looking for | |
d3119d1e EZ |
3286 | a backslash. */ |
3287 | ||
b98664d3 | 3288 | complaint (_("unknown symbol descriptor `%c'"), p[1]); |
d3119d1e EZ |
3289 | |
3290 | /* Ignore it; perhaps it is an extension that we don't | |
3291 | know about. */ | |
3292 | continue; | |
3293 | } | |
3294 | ||
3295 | case N_EXCL: | |
3296 | continue; | |
3297 | ||
3298 | case N_ENDM: | |
5afc051b | 3299 | /* Solaris 2 end of module, finish current partial |
4ae976d1 TT |
3300 | symbol table. dbx_end_psymtab will set the |
3301 | high text address of PST to the proper value, | |
3302 | which is necessary if a module compiled without | |
5afc051b | 3303 | debugging info follows this module. */ |
203c3895 | 3304 | if (pst |
5e2b427d | 3305 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
d3119d1e | 3306 | { |
891813be | 3307 | pst = (legacy_psymtab *) 0; |
d3119d1e EZ |
3308 | includes_used = 0; |
3309 | dependencies_used = 0; | |
3310 | } | |
d3119d1e EZ |
3311 | continue; |
3312 | ||
3313 | case N_RBRAC: | |
584d0cda TT |
3314 | { |
3315 | unrelocated_addr unrel_value | |
3316 | = unrelocated_addr (sh.value); | |
93d50cd8 | 3317 | if (unrel_value > save_pst->unrelocated_text_high ()) |
584d0cda TT |
3318 | save_pst->set_text_high (unrel_value); |
3319 | } | |
d3119d1e EZ |
3320 | continue; |
3321 | case N_EINCL: | |
3322 | case N_DSLINE: | |
3323 | case N_BSLINE: | |
3e43a32a MS |
3324 | case N_SSYM: /* Claim: Structure or union |
3325 | element. Hopefully, I can | |
3326 | ignore this. */ | |
3327 | case N_ENTRY: /* Alternate entry point; can | |
025bb325 | 3328 | ignore. */ |
3e43a32a | 3329 | case N_MAIN: /* Can definitely ignore this. */ |
025bb325 MS |
3330 | case N_CATCH: /* These are GNU C++ extensions. */ |
3331 | case N_EHDECL: /* that can safely be ignored here. */ | |
d3119d1e EZ |
3332 | case N_LENG: |
3333 | case N_BCOMM: | |
3334 | case N_ECOMM: | |
3335 | case N_ECOML: | |
3336 | case N_FNAME: | |
3337 | case N_SLINE: | |
3338 | case N_RSYM: | |
3339 | case N_PSYM: | |
3340 | case N_LBRAC: | |
3341 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
3342 | case N_DEFD: /* GNU Modula-2 */ | |
3e43a32a MS |
3343 | case N_ALIAS: /* SunPro F77: alias name, ignore |
3344 | for now. */ | |
d3119d1e | 3345 | |
025bb325 | 3346 | case N_OBJ: /* Useless types from Solaris. */ |
d3119d1e | 3347 | case N_OPT: |
3e43a32a | 3348 | /* These symbols aren't interesting; don't worry about |
025bb325 | 3349 | them. */ |
d3119d1e EZ |
3350 | |
3351 | continue; | |
3352 | ||
3353 | default: | |
3e43a32a MS |
3354 | /* If we haven't found it yet, ignore it. It's |
3355 | probably some new type we don't know about yet. */ | |
b98664d3 | 3356 | complaint (_("unknown symbol type %s"), |
025bb325 | 3357 | hex_string (type_code)); /* CUR_SYMBOL_TYPE */ |
d3119d1e EZ |
3358 | continue; |
3359 | } | |
c906108c | 3360 | } |
c5aa993b | 3361 | /* end - Handle continuation */ |
c906108c SS |
3362 | } |
3363 | } | |
3364 | else | |
3365 | { | |
3366 | for (cur_sdx = 0; cur_sdx < fh->csym;) | |
3367 | { | |
b926417a | 3368 | char *sym_name; |
fe978cb0 | 3369 | enum address_class theclass; |
9675da25 | 3370 | unrelocated_addr minsym_value; |
79748972 | 3371 | short section = -1; |
c906108c SS |
3372 | |
3373 | (*swap_sym_in) (cur_bfd, | |
3374 | ((char *) debug_info->external_sym | |
3375 | + ((fh->isymBase + cur_sdx) | |
3376 | * external_sym_size)), | |
3377 | &sh); | |
3378 | ||
3379 | if (ECOFF_IS_STAB (&sh)) | |
3380 | { | |
3381 | cur_sdx++; | |
3382 | continue; | |
3383 | } | |
3384 | ||
3385 | /* Non absolute static symbols go into the minimal table. */ | |
c5aa993b | 3386 | if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil |
c906108c SS |
3387 | || (sh.index == indexNil |
3388 | && (sh.st != stStatic || sh.sc == scAbs))) | |
3389 | { | |
025bb325 | 3390 | /* FIXME, premature? */ |
c906108c SS |
3391 | cur_sdx++; |
3392 | continue; | |
3393 | } | |
3394 | ||
b926417a | 3395 | sym_name = debug_info->ss + fh->issBase + sh.iss; |
c906108c | 3396 | |
9675da25 | 3397 | minsym_value = unrelocated_addr (sh.value); |
2273f0ac | 3398 | |
c906108c SS |
3399 | switch (sh.sc) |
3400 | { | |
3401 | case scText: | |
3402 | case scRConst: | |
3403 | /* The value of a stEnd symbol is the displacement from the | |
3404 | corresponding start symbol value, do not relocate it. */ | |
3405 | if (sh.st != stEnd) | |
79748972 | 3406 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
3407 | break; |
3408 | case scData: | |
3409 | case scSData: | |
3410 | case scRData: | |
3411 | case scPData: | |
3412 | case scXData: | |
79748972 | 3413 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
3414 | break; |
3415 | case scBss: | |
3416 | case scSBss: | |
79748972 | 3417 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
3418 | break; |
3419 | } | |
3420 | ||
3421 | switch (sh.st) | |
3422 | { | |
584d0cda TT |
3423 | unrelocated_addr high; |
3424 | unrelocated_addr procaddr; | |
c906108c SS |
3425 | int new_sdx; |
3426 | ||
3427 | case stStaticProc: | |
b926417a | 3428 | reader.record_with_info (sym_name, minsym_value, |
8dddcb8f TT |
3429 | mst_file_text, |
3430 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3431 | |
3432 | /* FALLTHROUGH */ | |
3433 | ||
3434 | case stProc: | |
1fb4c65b JB |
3435 | /* Ignore all parameter symbol records. */ |
3436 | if (sh.index >= hdr->iauxMax) | |
3437 | { | |
3438 | /* Should not happen, but does when cross-compiling | |
dda83cd7 | 3439 | with the MIPS compiler. FIXME -- pull later. */ |
b926417a | 3440 | index_complaint (sym_name); |
025bb325 | 3441 | new_sdx = cur_sdx + 1; /* Don't skip at all. */ |
1fb4c65b JB |
3442 | } |
3443 | else | |
3444 | new_sdx = AUX_GET_ISYM (fh->fBigendian, | |
3445 | (debug_info->external_aux | |
3446 | + fh->iauxBase | |
3447 | + sh.index)); | |
3448 | ||
3449 | if (new_sdx <= cur_sdx) | |
3450 | { | |
3451 | /* This should not happen either... FIXME. */ | |
b98664d3 | 3452 | complaint (_("bad proc end in aux found from symbol %s"), |
b926417a | 3453 | sym_name); |
025bb325 | 3454 | new_sdx = cur_sdx + 1; /* Don't skip backward. */ |
1fb4c65b JB |
3455 | } |
3456 | ||
dda83cd7 SM |
3457 | /* For stProc symbol records, we need to check the |
3458 | storage class as well, as only (stProc, scText) | |
3459 | entries represent "real" procedures - See the | |
3460 | Compaq document titled "Object File / Symbol Table | |
3461 | Format Specification" for more information. If the | |
3462 | storage class is not scText, we discard the whole | |
3463 | block of symbol records for this stProc. */ | |
3464 | if (sh.st == stProc && sh.sc != scText) | |
3465 | goto skip; | |
1fb4c65b | 3466 | |
c906108c | 3467 | /* Usually there is a local and a global stProc symbol |
025bb325 | 3468 | for a function. This means that the function name |
85102364 | 3469 | has already been entered into the minimal symbol table |
c906108c SS |
3470 | while processing the global symbols in pass 2 above. |
3471 | One notable exception is the PROGRAM name from | |
3472 | f77 compiled executables, it is only put out as | |
3473 | local stProc symbol, and a global MAIN__ stProc symbol | |
3474 | points to it. It doesn't matter though, as gdb is | |
3475 | still able to find the PROGRAM name via the partial | |
3476 | symbol table, and the MAIN__ symbol via the minimal | |
3477 | symbol table. */ | |
3478 | if (sh.st == stProc) | |
932539d7 TT |
3479 | pst->add_psymbol (sym_name, true, |
3480 | VAR_DOMAIN, LOC_BLOCK, | |
3481 | section, | |
3482 | psymbol_placement::GLOBAL, | |
1ee8702d TT |
3483 | unrelocated_addr (sh.value), |
3484 | psymtab_language, | |
7b249e47 | 3485 | partial_symtabs, objfile); |
c906108c | 3486 | else |
932539d7 TT |
3487 | pst->add_psymbol (sym_name, true, |
3488 | VAR_DOMAIN, LOC_BLOCK, | |
3489 | section, | |
3490 | psymbol_placement::STATIC, | |
1ee8702d TT |
3491 | unrelocated_addr (sh.value), |
3492 | psymtab_language, | |
7b249e47 | 3493 | partial_symtabs, objfile); |
c906108c | 3494 | |
584d0cda | 3495 | procaddr = unrelocated_addr (sh.value); |
c906108c | 3496 | |
c906108c SS |
3497 | cur_sdx = new_sdx; |
3498 | (*swap_sym_in) (cur_bfd, | |
3499 | ((char *) debug_info->external_sym | |
3500 | + ((fh->isymBase + cur_sdx - 1) | |
3501 | * external_sym_size)), | |
3502 | &sh); | |
3503 | if (sh.st != stEnd) | |
3504 | continue; | |
3505 | ||
3506 | /* Kludge for Irix 5.2 zero fh->adr. */ | |
3507 | if (!relocatable | |
52948f01 | 3508 | && (!pst->text_low_valid |
93d50cd8 | 3509 | || procaddr < pst->unrelocated_text_low ())) |
4ae976d1 | 3510 | pst->set_text_low (procaddr); |
c906108c | 3511 | |
584d0cda | 3512 | high = unrelocated_addr (CORE_ADDR (procaddr) + sh.value); |
93d50cd8 | 3513 | if (high > pst->unrelocated_text_high ()) |
4ae976d1 | 3514 | pst->set_text_high (high); |
c906108c SS |
3515 | continue; |
3516 | ||
3517 | case stStatic: /* Variable */ | |
c5aa993b | 3518 | if (SC_IS_DATA (sh.sc)) |
b926417a | 3519 | reader.record_with_info (sym_name, minsym_value, |
8dddcb8f TT |
3520 | mst_file_data, |
3521 | SECT_OFF_DATA (objfile)); | |
c906108c | 3522 | else |
b926417a | 3523 | reader.record_with_info (sym_name, minsym_value, |
8dddcb8f TT |
3524 | mst_file_bss, |
3525 | SECT_OFF_BSS (objfile)); | |
fe978cb0 | 3526 | theclass = LOC_STATIC; |
c906108c SS |
3527 | break; |
3528 | ||
c5aa993b | 3529 | case stIndirect: /* Irix5 forward declaration */ |
025bb325 | 3530 | /* Skip forward declarations from Irix5 cc. */ |
c906108c SS |
3531 | goto skip; |
3532 | ||
c5aa993b | 3533 | case stTypedef: /* Typedef */ |
c906108c SS |
3534 | /* Skip typedefs for forward declarations and opaque |
3535 | structs from alpha and mips cc. */ | |
3536 | if (sh.iss == 0 || has_opaque_xref (fh, &sh)) | |
3537 | goto skip; | |
fe978cb0 | 3538 | theclass = LOC_TYPEDEF; |
c906108c SS |
3539 | break; |
3540 | ||
3541 | case stConstant: /* Constant decl */ | |
fe978cb0 | 3542 | theclass = LOC_CONST; |
c906108c SS |
3543 | break; |
3544 | ||
3545 | case stUnion: | |
3546 | case stStruct: | |
3547 | case stEnum: | |
c5aa993b | 3548 | case stBlock: /* { }, str, un, enum */ |
c906108c | 3549 | /* Do not create a partial symbol for cc unnamed aggregates |
025bb325 | 3550 | and gcc empty aggregates. */ |
c906108c | 3551 | if ((sh.sc == scInfo |
c5aa993b | 3552 | || SC_IS_COMMON (sh.sc)) |
c906108c SS |
3553 | && sh.iss != 0 |
3554 | && sh.index != cur_sdx + 2) | |
3555 | { | |
932539d7 TT |
3556 | pst->add_psymbol (sym_name, true, |
3557 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, | |
3558 | psymbol_placement::STATIC, | |
1ee8702d TT |
3559 | unrelocated_addr (0), |
3560 | psymtab_language, | |
7b249e47 | 3561 | partial_symtabs, objfile); |
c906108c | 3562 | } |
7b249e47 TT |
3563 | handle_psymbol_enumerators (objfile, partial_symtabs, |
3564 | pst, fh, sh.st, sh.value); | |
c906108c | 3565 | |
025bb325 | 3566 | /* Skip over the block. */ |
c906108c SS |
3567 | new_sdx = sh.index; |
3568 | if (new_sdx <= cur_sdx) | |
3569 | { | |
025bb325 | 3570 | /* This happens with the Ultrix kernel. */ |
b926417a TT |
3571 | complaint (_("bad aux index at block symbol %s"), |
3572 | sym_name); | |
025bb325 | 3573 | new_sdx = cur_sdx + 1; /* Don't skip backward. */ |
c906108c SS |
3574 | } |
3575 | cur_sdx = new_sdx; | |
3576 | continue; | |
3577 | ||
3578 | case stFile: /* File headers */ | |
3579 | case stLabel: /* Labels */ | |
3580 | case stEnd: /* Ends of files */ | |
3581 | goto skip; | |
3582 | ||
3583 | case stLocal: /* Local variables */ | |
3584 | /* Normally these are skipped because we skip over | |
3585 | all blocks we see. However, these can occur | |
025bb325 | 3586 | as visible symbols in a .h file that contains code. */ |
c906108c SS |
3587 | goto skip; |
3588 | ||
3589 | default: | |
b926417a | 3590 | /* Both complaints are valid: one gives symbol sym_name, |
c906108c | 3591 | the other the offending symbol type. */ |
b98664d3 | 3592 | complaint (_("unknown local symbol %s"), |
b926417a | 3593 | sym_name); |
b98664d3 | 3594 | complaint (_("with type %d"), sh.st); |
c906108c SS |
3595 | cur_sdx++; |
3596 | continue; | |
3597 | } | |
025bb325 | 3598 | /* Use this gdb symbol. */ |
932539d7 TT |
3599 | pst->add_psymbol (sym_name, true, |
3600 | VAR_DOMAIN, theclass, section, | |
3601 | psymbol_placement::STATIC, | |
1ee8702d TT |
3602 | unrelocated_addr (sh.value), |
3603 | psymtab_language, | |
7b249e47 | 3604 | partial_symtabs, objfile); |
c906108c | 3605 | skip: |
025bb325 | 3606 | cur_sdx++; /* Go to next file symbol. */ |
c906108c SS |
3607 | } |
3608 | ||
025bb325 | 3609 | /* Now do enter the external symbols. */ |
c906108c SS |
3610 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; |
3611 | cur_sdx = fdr_to_pst[f_idx].n_globals; | |
3612 | PST_PRIVATE (save_pst)->extern_count = cur_sdx; | |
3613 | PST_PRIVATE (save_pst)->extern_tab = ext_ptr; | |
3614 | for (; --cur_sdx >= 0; ext_ptr++) | |
3615 | { | |
fe978cb0 | 3616 | enum address_class theclass; |
c906108c | 3617 | SYMR *psh; |
c906108c | 3618 | CORE_ADDR svalue; |
79748972 | 3619 | short section; |
c906108c | 3620 | |
e2ff18a0 SM |
3621 | gdb_assert (ext_ptr->ifd == f_idx); |
3622 | ||
c906108c SS |
3623 | psh = &ext_ptr->asym; |
3624 | ||
3625 | /* Do not add undefined symbols to the partial symbol table. */ | |
c5aa993b | 3626 | if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil) |
c906108c SS |
3627 | continue; |
3628 | ||
3629 | svalue = psh->value; | |
3630 | switch (psh->sc) | |
3631 | { | |
79748972 | 3632 | default: |
c906108c SS |
3633 | case scText: |
3634 | case scRConst: | |
79748972 | 3635 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
3636 | break; |
3637 | case scData: | |
3638 | case scSData: | |
3639 | case scRData: | |
3640 | case scPData: | |
3641 | case scXData: | |
79748972 | 3642 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
3643 | break; |
3644 | case scBss: | |
3645 | case scSBss: | |
79748972 | 3646 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
3647 | break; |
3648 | } | |
3649 | ||
3650 | switch (psh->st) | |
3651 | { | |
3652 | case stNil: | |
3653 | /* These are generated for static symbols in .o files, | |
3654 | ignore them. */ | |
3655 | continue; | |
3656 | case stProc: | |
3657 | case stStaticProc: | |
3658 | /* External procedure symbols have been entered | |
3659 | into the minimal symbol table in pass 2 above. | |
3660 | Ignore them, as parse_external will ignore them too. */ | |
3661 | continue; | |
3662 | case stLabel: | |
fe978cb0 | 3663 | theclass = LOC_LABEL; |
c906108c SS |
3664 | break; |
3665 | default: | |
23136709 | 3666 | unknown_ext_complaint (debug_info->ssext + psh->iss); |
86a73007 TT |
3667 | /* Pretend it's global. */ |
3668 | /* Fall through. */ | |
c906108c SS |
3669 | case stGlobal: |
3670 | /* Global common symbols are resolved by the runtime loader, | |
3671 | ignore them. */ | |
c5aa993b | 3672 | if (SC_IS_COMMON (psh->sc)) |
c906108c SS |
3673 | continue; |
3674 | ||
fe978cb0 | 3675 | theclass = LOC_STATIC; |
c906108c SS |
3676 | break; |
3677 | } | |
b926417a | 3678 | char *sym_name = debug_info->ssext + psh->iss; |
932539d7 TT |
3679 | pst->add_psymbol (sym_name, true, |
3680 | VAR_DOMAIN, theclass, | |
3681 | section, | |
3682 | psymbol_placement::GLOBAL, | |
1ee8702d TT |
3683 | unrelocated_addr (svalue), |
3684 | psymtab_language, | |
7b249e47 | 3685 | partial_symtabs, objfile); |
c906108c SS |
3686 | } |
3687 | } | |
3688 | ||
8763cede | 3689 | /* Link pst to FDR. dbx_end_psymtab returns NULL if the psymtab was |
dda83cd7 | 3690 | empty and put on the free list. */ |
8763cede | 3691 | fdr_to_pst[f_idx].pst |
7e9c0476 | 3692 | = dbx_end_psymtab (objfile, partial_symtabs, save_pst, |
8763cede | 3693 | psymtab_include_list, includes_used, |
93d50cd8 | 3694 | -1, save_pst->unrelocated_text_high (), |
8763cede DE |
3695 | dependency_list, dependencies_used, |
3696 | textlow_not_set); | |
c906108c SS |
3697 | includes_used = 0; |
3698 | dependencies_used = 0; | |
c906108c SS |
3699 | } |
3700 | ||
025bb325 | 3701 | /* Now scan the FDRs for dependencies. */ |
c906108c SS |
3702 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) |
3703 | { | |
3704 | fh = f_idx + debug_info->fdr; | |
3705 | pst = fdr_to_pst[f_idx].pst; | |
3706 | ||
cafb3438 | 3707 | if (pst == NULL) |
c906108c SS |
3708 | continue; |
3709 | ||
025bb325 | 3710 | /* This should catch stabs-in-ecoff. */ |
c906108c SS |
3711 | if (fh->crfd <= 1) |
3712 | continue; | |
3713 | ||
3e43a32a | 3714 | /* Skip the first file indirect entry as it is a self dependency for |
dda83cd7 | 3715 | source files or a reverse .h -> .c dependency for header files. */ |
c906108c | 3716 | pst->number_of_dependencies = 0; |
a9342b62 | 3717 | pst->dependencies |
7e9c0476 | 3718 | = partial_symtabs->allocate_dependencies (fh->crfd - 1); |
c906108c SS |
3719 | for (s_idx = 1; s_idx < fh->crfd; s_idx++) |
3720 | { | |
3721 | RFDT rh; | |
3722 | ||
3723 | (*swap_rfd_in) (cur_bfd, | |
3724 | ((char *) debug_info->external_rfd | |
3725 | + (fh->rfdBase + s_idx) * external_rfd_size), | |
3726 | &rh); | |
3727 | if (rh < 0 || rh >= hdr->ifdMax) | |
3728 | { | |
b98664d3 | 3729 | complaint (_("bad file number %ld"), rh); |
c906108c SS |
3730 | continue; |
3731 | } | |
3732 | ||
3733 | /* Skip self dependencies of header files. */ | |
3734 | if (rh == f_idx) | |
3735 | continue; | |
3736 | ||
405feb71 | 3737 | /* Do not add to dependency list if psymtab was empty. */ |
cafb3438 | 3738 | if (fdr_to_pst[rh].pst == NULL) |
c906108c | 3739 | continue; |
3e43a32a MS |
3740 | pst->dependencies[pst->number_of_dependencies++] |
3741 | = fdr_to_pst[rh].pst; | |
c906108c SS |
3742 | } |
3743 | } | |
3744 | ||
3745 | /* Remove the dummy psymtab created for -O3 images above, if it is | |
3746 | still empty, to enable the detection of stripped executables. */ | |
7e9c0476 | 3747 | partial_symtab *pst_del = partial_symtabs->psymtabs; |
891813be TT |
3748 | if (pst_del->next == NULL |
3749 | && pst_del->number_of_dependencies == 0 | |
932539d7 | 3750 | && pst_del->empty ()) |
7e9c0476 | 3751 | partial_symtabs->discard_psymtab (pst_del); |
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 | |
7b249e47 TT |
3758 | handle_psymbol_enumerators (struct objfile *objfile, |
3759 | psymtab_storage *partial_symtabs, | |
3760 | partial_symtab *pst, | |
932539d7 | 3761 | FDR *fh, int stype, CORE_ADDR svalue) |
c906108c SS |
3762 | { |
3763 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
12b9c64f | 3764 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c | 3765 | char *ext_sym = ((char *) debug_info->external_sym |
c5aa993b | 3766 | + ((fh->isymBase + cur_sdx + 1) * external_sym_size)); |
c906108c SS |
3767 | SYMR sh; |
3768 | TIR tir; | |
3769 | ||
3770 | switch (stype) | |
3771 | { | |
3772 | case stEnum: | |
3773 | break; | |
3774 | ||
3775 | case stBlock: | |
3776 | /* It is an enumerated type if the next symbol entry is a stMember | |
dda83cd7 SM |
3777 | and its auxiliary index is indexNil or its auxiliary entry |
3778 | is a plain btNil or btVoid. | |
3779 | Alpha cc -migrate enums are recognized by a zero index and | |
3780 | a zero symbol value. | |
3781 | DU 4.0 cc enums are recognized by a member type of btEnum without | |
3782 | qualifiers and a zero symbol value. */ | |
c906108c SS |
3783 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); |
3784 | if (sh.st != stMember) | |
3785 | return; | |
3786 | ||
3787 | if (sh.index == indexNil | |
3788 | || (sh.index == 0 && svalue == 0)) | |
3789 | break; | |
3790 | (*debug_swap->swap_tir_in) (fh->fBigendian, | |
3791 | &(debug_info->external_aux | |
3792 | + fh->iauxBase + sh.index)->a_ti, | |
3793 | &tir); | |
3794 | if ((tir.bt != btNil | |
3795 | && tir.bt != btVoid | |
3796 | && (tir.bt != btEnum || svalue != 0)) | |
3797 | || tir.tq0 != tqNil) | |
3798 | return; | |
3799 | break; | |
3800 | ||
3801 | default: | |
3802 | return; | |
3803 | } | |
3804 | ||
3805 | for (;;) | |
3806 | { | |
3807 | char *name; | |
3808 | ||
3809 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); | |
3810 | if (sh.st != stMember) | |
3811 | break; | |
3812 | name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
3813 | ||
3814 | /* Note that the value doesn't matter for enum constants | |
dda83cd7 | 3815 | in psymtabs, just in symtabs. */ |
932539d7 TT |
3816 | pst->add_psymbol (name, true, |
3817 | VAR_DOMAIN, LOC_CONST, -1, | |
1ee8702d TT |
3818 | psymbol_placement::STATIC, |
3819 | unrelocated_addr (0), | |
7b249e47 | 3820 | psymtab_language, partial_symtabs, objfile); |
c906108c SS |
3821 | ext_sym += external_sym_size; |
3822 | } | |
3823 | } | |
3824 | ||
025bb325 | 3825 | /* Get the next symbol. OBJFILE is unused. */ |
0e7e8d51 | 3826 | |
a121b7c1 | 3827 | static const char * |
0e7e8d51 | 3828 | mdebug_next_symbol_text (struct objfile *objfile) |
c906108c SS |
3829 | { |
3830 | SYMR sh; | |
3831 | ||
3832 | cur_sdx++; | |
3833 | (*debug_swap->swap_sym_in) (cur_bfd, | |
3834 | ((char *) debug_info->external_sym | |
3835 | + ((cur_fdr->isymBase + cur_sdx) | |
3836 | * debug_swap->external_sym_size)), | |
3837 | &sh); | |
3838 | return debug_info->ss + cur_fdr->issBase + sh.iss; | |
3839 | } | |
3840 | ||
3841 | /* Ancillary function to psymtab_to_symtab(). Does all the work | |
3842 | for turning the partial symtab PST into a symtab, recurring | |
3843 | first on all dependent psymtabs. The argument FILENAME is | |
3844 | only passed so we can see in debug stack traces what file | |
3845 | is being read. | |
3846 | ||
3847 | This function has a split personality, based on whether the | |
3848 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. | |
3849 | The flow of control and even the memory allocation differs. FIXME. */ | |
3850 | ||
3851 | static void | |
69b037c3 | 3852 | mdebug_expand_psymtab (legacy_psymtab *pst, struct objfile *objfile) |
c906108c SS |
3853 | { |
3854 | bfd_size_type external_sym_size; | |
3855 | bfd_size_type external_pdr_size; | |
12b9c64f AO |
3856 | void (*swap_sym_in) (bfd *, void *, SYMR *); |
3857 | void (*swap_pdr_in) (bfd *, void *, PDR *); | |
c906108c | 3858 | int i; |
43f3e411 | 3859 | struct compunit_symtab *cust = NULL; |
c906108c SS |
3860 | FDR *fh; |
3861 | struct linetable *lines; | |
3862 | CORE_ADDR lowest_pdr_addr = 0; | |
16db6055 | 3863 | int last_symtab_ended = 0; |
6a053cb1 | 3864 | const section_offsets §ion_offsets = objfile->section_offsets; |
c906108c SS |
3865 | |
3866 | if (pst->readin) | |
3867 | return; | |
6d94535f | 3868 | pst->readin = true; |
c906108c | 3869 | |
85102364 | 3870 | /* Read in all partial symtabs on which this one is dependent. |
c906108c SS |
3871 | NOTE that we do have circular dependencies, sigh. We solved |
3872 | that by setting pst->readin before this point. */ | |
48993951 | 3873 | pst->expand_dependencies (objfile); |
c906108c SS |
3874 | |
3875 | /* Do nothing if this is a dummy psymtab. */ | |
3876 | ||
932539d7 | 3877 | if (pst->empty () && !pst->text_low_valid && !pst->text_high_valid) |
c906108c SS |
3878 | return; |
3879 | ||
025bb325 | 3880 | /* Now read the symbols for this symtab. */ |
c906108c SS |
3881 | |
3882 | cur_bfd = CUR_BFD (pst); | |
3883 | debug_swap = DEBUG_SWAP (pst); | |
3884 | debug_info = DEBUG_INFO (pst); | |
3885 | pending_list = PENDING_LIST (pst); | |
3886 | external_sym_size = debug_swap->external_sym_size; | |
3887 | external_pdr_size = debug_swap->external_pdr_size; | |
3888 | swap_sym_in = debug_swap->swap_sym_in; | |
3889 | swap_pdr_in = debug_swap->swap_pdr_in; | |
5c80ed9d | 3890 | mdebugread_objfile = objfile; |
c906108c SS |
3891 | cur_fd = FDR_IDX (pst); |
3892 | fh = ((cur_fd == -1) | |
cafb3438 | 3893 | ? NULL |
c906108c SS |
3894 | : debug_info->fdr + cur_fd); |
3895 | cur_fdr = fh; | |
3896 | ||
025bb325 | 3897 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ |
c906108c | 3898 | processing_gcc_compilation = 0; |
cafb3438 | 3899 | if (fh != NULL && fh->csym >= 2) |
c906108c SS |
3900 | { |
3901 | SYMR sh; | |
3902 | ||
3903 | (*swap_sym_in) (cur_bfd, | |
3904 | ((char *) debug_info->external_sym | |
3905 | + (fh->isymBase + 1) * external_sym_size), | |
3906 | &sh); | |
ee300cd4 AC |
3907 | if (strcmp (debug_info->ss + fh->issBase + sh.iss, |
3908 | stabs_symbol) == 0) | |
c906108c SS |
3909 | { |
3910 | /* We indicate that this is a GCC compilation so that certain | |
3911 | features will be enabled in stabsread/dbxread. */ | |
3912 | processing_gcc_compilation = 2; | |
3913 | } | |
3914 | } | |
3915 | ||
3916 | if (processing_gcc_compilation != 0) | |
3917 | { | |
08feed99 | 3918 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
3919 | |
3920 | /* This symbol table contains stabs-in-ecoff entries. */ | |
3921 | ||
025bb325 | 3922 | /* Parse local symbols first. */ |
c906108c | 3923 | |
025bb325 | 3924 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr. */ |
c906108c | 3925 | { |
dd707e8e | 3926 | mdebugread_objfile = NULL; |
c906108c SS |
3927 | return; |
3928 | } | |
3929 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
3930 | { | |
3931 | SYMR sh; | |
3932 | char *name; | |
3933 | CORE_ADDR valu; | |
3934 | ||
3935 | (*swap_sym_in) (cur_bfd, | |
3936 | (((char *) debug_info->external_sym) | |
3937 | + (fh->isymBase + cur_sdx) * external_sym_size), | |
3938 | &sh); | |
3939 | name = debug_info->ss + fh->issBase + sh.iss; | |
3940 | valu = sh.value; | |
3941 | /* XXX This is a hack. It will go away! */ | |
3942 | if (ECOFF_IS_STAB (&sh) || (name[0] == '#')) | |
3943 | { | |
3944 | int type_code = ECOFF_UNMARK_STAB (sh.index); | |
5ffa0793 | 3945 | enum language language = PST_PRIVATE (pst)->pst_language; |
c906108c SS |
3946 | |
3947 | /* We should never get non N_STAB symbols here, but they | |
dda83cd7 SM |
3948 | should be harmless, so keep process_one_symbol from |
3949 | complaining about them. */ | |
c906108c SS |
3950 | if (type_code & N_STAB) |
3951 | { | |
16db6055 | 3952 | /* If we found a trailing N_SO with no name, process |
dda83cd7 SM |
3953 | it here instead of in process_one_symbol, so we |
3954 | can keep a handle to its symtab. The symtab | |
3955 | would otherwise be ended twice, once in | |
3956 | process_one_symbol, and once after this loop. */ | |
16db6055 | 3957 | if (type_code == N_SO |
46212e0b | 3958 | && get_last_source_file () |
16db6055 EZ |
3959 | && previous_stab_code != (unsigned char) N_SO |
3960 | && *name == '\000') | |
3961 | { | |
6a053cb1 | 3962 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
16db6055 | 3963 | previous_stab_code = N_SO; |
83bad316 | 3964 | cust = end_compunit_symtab (valu); |
16db6055 EZ |
3965 | end_stabs (); |
3966 | last_symtab_ended = 1; | |
3967 | } | |
3968 | else | |
3969 | { | |
3970 | last_symtab_ended = 0; | |
3971 | process_one_symbol (type_code, 0, valu, name, | |
5ffa0793 | 3972 | section_offsets, objfile, language); |
16db6055 | 3973 | } |
c906108c SS |
3974 | } |
3975 | /* Similarly a hack. */ | |
3976 | else if (name[0] == '#') | |
3977 | { | |
3978 | process_one_symbol (N_SLINE, 0, valu, name, | |
5ffa0793 | 3979 | section_offsets, objfile, language); |
c906108c SS |
3980 | } |
3981 | if (type_code == N_FUN) | |
3982 | { | |
3983 | /* Make up special symbol to contain | |
025bb325 | 3984 | procedure specific info. */ |
e39db4db SM |
3985 | mdebug_extra_func_info *e |
3986 | = OBSTACK_ZALLOC (&mdebugread_objfile->objfile_obstack, | |
3987 | mdebug_extra_func_info); | |
f92761ec | 3988 | struct symbol *s = new_symbol (MDEBUG_EFI_SYMBOL_NAME); |
c906108c | 3989 | |
6c9c307c | 3990 | s->set_domain (LABEL_DOMAIN); |
ba44b1a3 | 3991 | s->set_aclass_index (LOC_CONST); |
a8ed3dde | 3992 | s->set_type (builtin_type (objfile)->builtin_void); |
4aeddc50 | 3993 | s->set_value_bytes ((gdb_byte *) e); |
c906108c | 3994 | e->pdr.framereg = -1; |
e148f09d | 3995 | add_symbol_to_list (s, get_local_symbols ()); |
c906108c SS |
3996 | } |
3997 | } | |
3998 | else if (sh.st == stLabel) | |
3999 | { | |
4000 | if (sh.index == indexNil) | |
4001 | { | |
4002 | /* This is what the gcc2_compiled and __gnu_compiled_* | |
4003 | show up as. So don't complain. */ | |
4004 | ; | |
4005 | } | |
4006 | else | |
4007 | { | |
025bb325 | 4008 | /* Handle encoded stab line number. */ |
48e0f38c TT |
4009 | record_line |
4010 | (get_current_subfile (), sh.index, | |
4011 | unrelocated_addr (gdbarch_addr_bits_remove (gdbarch, | |
4012 | valu))); | |
c906108c SS |
4013 | } |
4014 | } | |
4015 | else if (sh.st == stProc || sh.st == stStaticProc | |
4016 | || sh.st == stStatic || sh.st == stEnd) | |
025bb325 | 4017 | /* These are generated by gcc-2.x, do not complain. */ |
c906108c SS |
4018 | ; |
4019 | else | |
b98664d3 | 4020 | complaint (_("unknown stabs symbol %s"), name); |
c906108c | 4021 | } |
16db6055 EZ |
4022 | |
4023 | if (! last_symtab_ended) | |
4024 | { | |
584d0cda | 4025 | cust = end_compunit_symtab (pst->text_high (objfile)); |
16db6055 EZ |
4026 | end_stabs (); |
4027 | } | |
c906108c | 4028 | |
c906108c | 4029 | /* There used to be a call to sort_blocks here, but this should not |
dda83cd7 SM |
4030 | be necessary for stabs symtabs. And as sort_blocks modifies the |
4031 | start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK, | |
4032 | it did the wrong thing if the first procedure in a file was | |
4033 | generated via asm statements. */ | |
c906108c SS |
4034 | |
4035 | /* Fill in procedure info next. */ | |
4036 | if (fh->cpd > 0) | |
4037 | { | |
c906108c SS |
4038 | char *pdr_ptr; |
4039 | char *pdr_end; | |
4040 | PDR *pdr_in; | |
4041 | PDR *pdr_in_end; | |
4042 | ||
633cf254 | 4043 | gdb::def_vector<PDR> pr_block (fh->cpd); |
c906108c SS |
4044 | |
4045 | pdr_ptr = ((char *) debug_info->external_pdr | |
4046 | + fh->ipdFirst * external_pdr_size); | |
4047 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
633cf254 | 4048 | pdr_in = pr_block.data (); |
c906108c SS |
4049 | for (; |
4050 | pdr_ptr < pdr_end; | |
4051 | pdr_ptr += external_pdr_size, pdr_in++) | |
4052 | { | |
4053 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4054 | ||
4055 | /* Determine lowest PDR address, the PDRs are not always | |
dda83cd7 | 4056 | sorted. */ |
633cf254 | 4057 | if (pdr_in == pr_block.data ()) |
c906108c SS |
4058 | lowest_pdr_addr = pdr_in->adr; |
4059 | else if (pdr_in->adr < lowest_pdr_addr) | |
4060 | lowest_pdr_addr = pdr_in->adr; | |
4061 | } | |
4062 | ||
633cf254 | 4063 | pdr_in = pr_block.data (); |
c906108c SS |
4064 | pdr_in_end = pdr_in + fh->cpd; |
4065 | for (; pdr_in < pdr_in_end; pdr_in++) | |
43f3e411 | 4066 | parse_procedure (pdr_in, cust, pst); |
c906108c SS |
4067 | } |
4068 | } | |
4069 | else | |
4070 | { | |
4071 | /* This symbol table contains ordinary ecoff entries. */ | |
4072 | ||
30cc903e | 4073 | int maxlines, size; |
c906108c SS |
4074 | EXTR *ext_ptr; |
4075 | ||
c906108c SS |
4076 | if (fh == 0) |
4077 | { | |
4078 | maxlines = 0; | |
43f3e411 | 4079 | cust = new_symtab ("unknown", 0, objfile); |
c906108c SS |
4080 | } |
4081 | else | |
4082 | { | |
c906108c | 4083 | maxlines = 2 * fh->cline; |
43f3e411 | 4084 | cust = new_symtab (pst->filename, maxlines, objfile); |
c906108c SS |
4085 | |
4086 | /* The proper language was already determined when building | |
4087 | the psymtab, use it. */ | |
1ee2e9f9 SM |
4088 | cust->primary_filetab ()->set_language |
4089 | (PST_PRIVATE (pst)->pst_language); | |
c906108c SS |
4090 | } |
4091 | ||
1ee2e9f9 | 4092 | psymtab_language = cust->primary_filetab ()->language (); |
c906108c | 4093 | |
977a0c16 TT |
4094 | /* This code allocates the line table on the heap and then later |
4095 | copies it to the obstack. So, while casting away const here | |
4096 | is ugly, it's not incorrect. */ | |
4097 | lines = const_cast<linetable *> (cust->primary_filetab ()->linetable ()); | |
c906108c | 4098 | |
025bb325 | 4099 | /* Get a new lexical context. */ |
c906108c SS |
4100 | |
4101 | push_parse_stack (); | |
510860f2 | 4102 | top_stack->cur_st = cust->primary_filetab (); |
63d609de | 4103 | top_stack->cur_block = cust->blockvector ()->static_block (); |
4b8791e1 SM |
4104 | top_stack->cur_block->set_start (pst->text_low (objfile)); |
4105 | top_stack->cur_block->set_end (0); | |
c906108c | 4106 | top_stack->blocktype = stFile; |
c906108c SS |
4107 | top_stack->cur_type = 0; |
4108 | top_stack->procadr = 0; | |
4109 | top_stack->numargs = 0; | |
4110 | found_ecoff_debugging_info = 0; | |
4111 | ||
4112 | if (fh) | |
4113 | { | |
4114 | char *sym_ptr; | |
4115 | char *sym_end; | |
4116 | ||
025bb325 | 4117 | /* Parse local symbols first. */ |
c906108c SS |
4118 | sym_ptr = ((char *) debug_info->external_sym |
4119 | + fh->isymBase * external_sym_size); | |
4120 | sym_end = sym_ptr + fh->csym * external_sym_size; | |
4121 | while (sym_ptr < sym_end) | |
4122 | { | |
4123 | SYMR sh; | |
4124 | int c; | |
4125 | ||
4126 | (*swap_sym_in) (cur_bfd, sym_ptr, &sh); | |
4127 | c = parse_symbol (&sh, | |
4128 | debug_info->external_aux + fh->iauxBase, | |
3e43a32a | 4129 | sym_ptr, fh->fBigendian, |
18a94d75 | 4130 | section_offsets, objfile); |
c906108c SS |
4131 | sym_ptr += c * external_sym_size; |
4132 | } | |
4133 | ||
4134 | /* Linenumbers. At the end, check if we can save memory. | |
4135 | parse_lines has to look ahead an arbitrary number of PDR | |
4136 | structures, so we swap them all first. */ | |
4137 | if (fh->cpd > 0) | |
4138 | { | |
c906108c SS |
4139 | char *pdr_ptr; |
4140 | char *pdr_end; | |
4141 | PDR *pdr_in; | |
4142 | PDR *pdr_in_end; | |
4143 | ||
633cf254 | 4144 | gdb::def_vector<PDR> pr_block (fh->cpd); |
c906108c SS |
4145 | |
4146 | pdr_ptr = ((char *) debug_info->external_pdr | |
4147 | + fh->ipdFirst * external_pdr_size); | |
4148 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
633cf254 | 4149 | pdr_in = pr_block.data (); |
c906108c SS |
4150 | for (; |
4151 | pdr_ptr < pdr_end; | |
4152 | pdr_ptr += external_pdr_size, pdr_in++) | |
4153 | { | |
4154 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4155 | ||
4156 | /* Determine lowest PDR address, the PDRs are not always | |
4157 | sorted. */ | |
633cf254 | 4158 | if (pdr_in == pr_block.data ()) |
c906108c SS |
4159 | lowest_pdr_addr = pdr_in->adr; |
4160 | else if (pdr_in->adr < lowest_pdr_addr) | |
4161 | lowest_pdr_addr = pdr_in->adr; | |
4162 | } | |
4163 | ||
633cf254 | 4164 | parse_lines (fh, pr_block.data (), lines, maxlines, |
1acc9dca | 4165 | lowest_pdr_addr); |
c906108c SS |
4166 | if (lines->nitems < fh->cline) |
4167 | lines = shrink_linetable (lines); | |
4168 | ||
4169 | /* Fill in procedure info next. */ | |
633cf254 | 4170 | pdr_in = pr_block.data (); |
c906108c SS |
4171 | pdr_in_end = pdr_in + fh->cpd; |
4172 | for (; pdr_in < pdr_in_end; pdr_in++) | |
43f3e411 | 4173 | parse_procedure (pdr_in, NULL, pst); |
c906108c SS |
4174 | } |
4175 | } | |
4176 | ||
30cc903e TT |
4177 | size = lines->nitems; |
4178 | if (size > 1) | |
4179 | --size; | |
5b607461 SM |
4180 | cust->primary_filetab ()->set_linetable |
4181 | ((struct linetable *) | |
4182 | obstack_copy (&mdebugread_objfile->objfile_obstack, | |
4183 | lines, (sizeof (struct linetable) | |
4184 | + size * sizeof (lines->item)))); | |
30cc903e | 4185 | xfree (lines); |
c906108c SS |
4186 | |
4187 | /* .. and our share of externals. | |
dda83cd7 SM |
4188 | XXX use the global list to speed up things here. How? |
4189 | FIXME, Maybe quit once we have found the right number of ext's? */ | |
510860f2 | 4190 | top_stack->cur_st = cust->primary_filetab (); |
3e43a32a | 4191 | top_stack->cur_block |
63d609de | 4192 | = top_stack->cur_st->compunit ()->blockvector ()->global_block (); |
c906108c | 4193 | top_stack->blocktype = stFile; |
c906108c SS |
4194 | |
4195 | ext_ptr = PST_PRIVATE (pst)->extern_tab; | |
4196 | for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) | |
3e43a32a | 4197 | parse_external (ext_ptr, fh->fBigendian, |
18a94d75 | 4198 | section_offsets, objfile); |
c906108c SS |
4199 | |
4200 | /* If there are undefined symbols, tell the user. | |
dda83cd7 SM |
4201 | The alpha has an undefined symbol for every symbol that is |
4202 | from a shared library, so tell the user only if verbose is on. */ | |
c906108c SS |
4203 | if (info_verbose && n_undef_symbols) |
4204 | { | |
6cb06a8c TT |
4205 | gdb_printf (_("File %s contains %d unresolved references:"), |
4206 | symtab_to_filename_for_display | |
4207 | (cust->primary_filetab ()), | |
4208 | n_undef_symbols); | |
4209 | gdb_printf ("\n\t%4d variables\n\t%4d " | |
4210 | "procedures\n\t%4d labels\n", | |
4211 | n_undef_vars, n_undef_procs, n_undef_labels); | |
c906108c SS |
4212 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; |
4213 | ||
4214 | } | |
4215 | pop_parse_stack (); | |
4216 | ||
510860f2 | 4217 | sort_blocks (cust->primary_filetab ()); |
c906108c SS |
4218 | } |
4219 | ||
4220 | /* Now link the psymtab and the symtab. */ | |
43f3e411 | 4221 | pst->compunit_symtab = cust; |
c906108c | 4222 | |
dd707e8e | 4223 | mdebugread_objfile = NULL; |
c906108c SS |
4224 | } |
4225 | \f | |
025bb325 | 4226 | /* Ancillary parsing procedures. */ |
c906108c SS |
4227 | |
4228 | /* Return 1 if the symbol pointed to by SH has a cross reference | |
4229 | to an opaque aggregate type, else 0. */ | |
4230 | ||
4231 | static int | |
fba45db2 | 4232 | has_opaque_xref (FDR *fh, SYMR *sh) |
c906108c SS |
4233 | { |
4234 | TIR tir; | |
4235 | union aux_ext *ax; | |
4236 | RNDXR rn[1]; | |
4237 | unsigned int rf; | |
4238 | ||
4239 | if (sh->index == indexNil) | |
4240 | return 0; | |
4241 | ||
4242 | ax = debug_info->external_aux + fh->iauxBase + sh->index; | |
4243 | (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir); | |
4244 | if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum) | |
4245 | return 0; | |
4246 | ||
4247 | ax++; | |
4248 | (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn); | |
4249 | if (rn->rfd == 0xfff) | |
4250 | rf = AUX_GET_ISYM (fh->fBigendian, ax + 1); | |
4251 | else | |
4252 | rf = rn->rfd; | |
4253 | if (rf != -1) | |
4254 | return 0; | |
4255 | return 1; | |
4256 | } | |
4257 | ||
4258 | /* Lookup the type at relative index RN. Return it in TPP | |
4259 | if found and in any event come up with its name PNAME. | |
4260 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). | |
025bb325 | 4261 | Return value says how many aux symbols we ate. */ |
c906108c SS |
4262 | |
4263 | static int | |
3e43a32a MS |
4264 | cross_ref (int fd, union aux_ext *ax, struct type **tpp, |
4265 | enum type_code type_code, | |
025bb325 | 4266 | /* Use to alloc new type if none is found. */ |
a121b7c1 | 4267 | const char **pname, int bigend, const char *sym_name) |
c906108c SS |
4268 | { |
4269 | RNDXR rn[1]; | |
4270 | unsigned int rf; | |
4271 | int result = 1; | |
4272 | FDR *fh; | |
4273 | char *esh; | |
4274 | SYMR sh; | |
4275 | int xref_fd; | |
4276 | struct mdebug_pending *pend; | |
4277 | ||
be903358 | 4278 | *tpp = NULL; |
c906108c SS |
4279 | |
4280 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
4281 | ||
025bb325 | 4282 | /* Escape index means 'the next one'. */ |
c906108c SS |
4283 | if (rn->rfd == 0xfff) |
4284 | { | |
4285 | result++; | |
4286 | rf = AUX_GET_ISYM (bigend, ax + 1); | |
4287 | } | |
4288 | else | |
4289 | { | |
4290 | rf = rn->rfd; | |
4291 | } | |
4292 | ||
33385940 TT |
4293 | type_allocator alloc (mdebugread_objfile); |
4294 | ||
c906108c | 4295 | /* mips cc uses a rf of -1 for opaque struct definitions. |
19f392bc | 4296 | Set TYPE_STUB for these types so that check_typedef will |
c906108c SS |
4297 | resolve them if the struct gets defined in another compilation unit. */ |
4298 | if (rf == -1) | |
4299 | { | |
4300 | *pname = "<undefined>"; | |
33385940 | 4301 | *tpp = alloc.new_type (type_code, 0, NULL); |
b4b73759 | 4302 | (*tpp)->set_is_stub (true); |
c906108c SS |
4303 | return result; |
4304 | } | |
4305 | ||
4306 | /* mips cc uses an escaped rn->index of 0 for struct return types | |
025bb325 | 4307 | of procedures that were compiled without -g. These will always remain |
c906108c SS |
4308 | undefined. */ |
4309 | if (rn->rfd == 0xfff && rn->index == 0) | |
4310 | { | |
4311 | *pname = "<undefined>"; | |
4312 | return result; | |
4313 | } | |
4314 | ||
4315 | /* Find the relative file descriptor and the symbol in it. */ | |
4316 | fh = get_rfd (fd, rf); | |
4317 | xref_fd = fh - debug_info->fdr; | |
4318 | ||
4319 | if (rn->index >= fh->csym) | |
4320 | { | |
4321 | /* File indirect entry is corrupt. */ | |
4322 | *pname = "<illegal>"; | |
23136709 | 4323 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4324 | return result; |
4325 | } | |
4326 | ||
4327 | /* If we have processed this symbol then we left a forwarding | |
4328 | pointer to the type in the pending list. If not, we`ll put | |
4329 | it in a list of pending types, to be processed later when | |
4330 | the file will be. In any event, we collect the name for the | |
4331 | type here. */ | |
4332 | ||
4333 | esh = ((char *) debug_info->external_sym | |
4334 | + ((fh->isymBase + rn->index) | |
4335 | * debug_swap->external_sym_size)); | |
4336 | (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh); | |
4337 | ||
4338 | /* Make sure that this type of cross reference can be handled. */ | |
4339 | if ((sh.sc != scInfo | |
4340 | || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect | |
4341 | && sh.st != stStruct && sh.st != stUnion | |
4342 | && sh.st != stEnum)) | |
c5aa993b | 4343 | && (sh.st != stBlock || !SC_IS_COMMON (sh.sc))) |
c906108c SS |
4344 | { |
4345 | /* File indirect entry is corrupt. */ | |
4346 | *pname = "<illegal>"; | |
23136709 | 4347 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4348 | return result; |
4349 | } | |
4350 | ||
4351 | *pname = debug_info->ss + fh->issBase + sh.iss; | |
4352 | ||
4353 | pend = is_pending_symbol (fh, esh); | |
4354 | if (pend) | |
4355 | *tpp = pend->t; | |
4356 | else | |
4357 | { | |
4358 | /* We have not yet seen this type. */ | |
4359 | ||
4360 | if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect) | |
4361 | { | |
4362 | TIR tir; | |
4363 | ||
4364 | /* alpha cc puts out a stTypedef with a sh.iss of zero for | |
4365 | two cases: | |
4366 | a) forward declarations of structs/unions/enums which are not | |
c5aa993b | 4367 | defined in this compilation unit. |
025bb325 | 4368 | For these the type will be void. This is a bad design decision |
c5aa993b JM |
4369 | as cross referencing across compilation units is impossible |
4370 | due to the missing name. | |
c906108c | 4371 | b) forward declarations of structs/unions/enums/typedefs which |
c5aa993b | 4372 | are defined later in this file or in another file in the same |
025bb325 | 4373 | compilation unit. Irix5 cc uses a stIndirect symbol for this. |
c5aa993b | 4374 | Simply cross reference those again to get the true type. |
c906108c SS |
4375 | The forward references are not entered in the pending list and |
4376 | in the symbol table. */ | |
4377 | ||
4378 | (*debug_swap->swap_tir_in) (bigend, | |
4379 | &(debug_info->external_aux | |
4380 | + fh->iauxBase + sh.index)->a_ti, | |
4381 | &tir); | |
4382 | if (tir.tq0 != tqNil) | |
b98664d3 | 4383 | complaint (_("illegal tq0 in forward typedef for %s"), sym_name); |
c906108c SS |
4384 | switch (tir.bt) |
4385 | { | |
4386 | case btVoid: | |
33385940 | 4387 | *tpp = alloc.new_type (type_code, 0, NULL); |
c5aa993b | 4388 | *pname = "<undefined>"; |
c906108c SS |
4389 | break; |
4390 | ||
4391 | case btStruct: | |
4392 | case btUnion: | |
4393 | case btEnum: | |
4394 | cross_ref (xref_fd, | |
4395 | (debug_info->external_aux | |
4396 | + fh->iauxBase + sh.index + 1), | |
4397 | tpp, type_code, pname, | |
4398 | fh->fBigendian, sym_name); | |
4399 | break; | |
4400 | ||
4401 | case btTypedef: | |
025bb325 | 4402 | /* Follow a forward typedef. This might recursively |
dda83cd7 SM |
4403 | call cross_ref till we get a non typedef'ed type. |
4404 | FIXME: This is not correct behaviour, but gdb currently | |
4405 | cannot handle typedefs without type copying. Type | |
4406 | copying is impossible as we might have mutual forward | |
4407 | references between two files and the copied type would not | |
4408 | get filled in when we later parse its definition. */ | |
c906108c SS |
4409 | *tpp = parse_type (xref_fd, |
4410 | debug_info->external_aux + fh->iauxBase, | |
4411 | sh.index, | |
cafb3438 | 4412 | NULL, |
c906108c SS |
4413 | fh->fBigendian, |
4414 | debug_info->ss + fh->issBase + sh.iss); | |
4415 | add_pending (fh, esh, *tpp); | |
4416 | break; | |
4417 | ||
4418 | default: | |
b98664d3 | 4419 | complaint (_("illegal bt %d in forward typedef for %s"), tir.bt, |
23136709 | 4420 | sym_name); |
33385940 | 4421 | *tpp = alloc.new_type (type_code, 0, NULL); |
c906108c SS |
4422 | break; |
4423 | } | |
4424 | return result; | |
4425 | } | |
4426 | else if (sh.st == stTypedef) | |
4427 | { | |
025bb325 | 4428 | /* Parse the type for a normal typedef. This might recursively call |
c906108c SS |
4429 | cross_ref till we get a non typedef'ed type. |
4430 | FIXME: This is not correct behaviour, but gdb currently | |
025bb325 | 4431 | cannot handle typedefs without type copying. But type copying is |
c906108c SS |
4432 | impossible as we might have mutual forward references between |
4433 | two files and the copied type would not get filled in when | |
4434 | we later parse its definition. */ | |
4435 | *tpp = parse_type (xref_fd, | |
4436 | debug_info->external_aux + fh->iauxBase, | |
4437 | sh.index, | |
cafb3438 | 4438 | NULL, |
c906108c SS |
4439 | fh->fBigendian, |
4440 | debug_info->ss + fh->issBase + sh.iss); | |
4441 | } | |
4442 | else | |
4443 | { | |
4444 | /* Cross reference to a struct/union/enum which is defined | |
4445 | in another file in the same compilation unit but that file | |
4446 | has not been parsed yet. | |
4447 | Initialize the type only, it will be filled in when | |
4448 | it's definition is parsed. */ | |
33385940 | 4449 | *tpp = alloc.new_type (type_code, 0, NULL); |
c906108c SS |
4450 | } |
4451 | add_pending (fh, esh, *tpp); | |
4452 | } | |
4453 | ||
025bb325 | 4454 | /* We used one auxent normally, two if we got a "next one" rf. */ |
c906108c SS |
4455 | return result; |
4456 | } | |
4457 | ||
4458 | ||
4459 | /* Quick&dirty lookup procedure, to avoid the MI ones that require | |
025bb325 | 4460 | keeping the symtab sorted. */ |
c906108c SS |
4461 | |
4462 | static struct symbol * | |
a121b7c1 | 4463 | mylookup_symbol (const char *name, const struct block *block, |
fe978cb0 | 4464 | domain_enum domain, enum address_class theclass) |
c906108c | 4465 | { |
de4f826b | 4466 | int inc; |
c906108c | 4467 | |
c906108c | 4468 | inc = name[0]; |
548a89df | 4469 | for (struct symbol *sym : block_iterator_range (block)) |
c906108c | 4470 | { |
987012b8 | 4471 | if (sym->linkage_name ()[0] == inc |
6c9c307c | 4472 | && sym->domain () == domain |
66d7f48f | 4473 | && sym->aclass () == theclass |
987012b8 | 4474 | && strcmp (sym->linkage_name (), name) == 0) |
c906108c | 4475 | return sym; |
c906108c | 4476 | } |
e88c90f2 | 4477 | |
f135fe72 | 4478 | block = block->superblock (); |
c906108c | 4479 | if (block) |
fe978cb0 | 4480 | return mylookup_symbol (name, block, domain, theclass); |
c906108c SS |
4481 | return 0; |
4482 | } | |
4483 | ||
4484 | ||
de4f826b | 4485 | /* Add a new symbol S to a block B. */ |
c906108c SS |
4486 | |
4487 | static void | |
c7efd0b9 | 4488 | add_symbol (struct symbol *s, struct symtab *symtab, struct block *b) |
c906108c | 4489 | { |
4206d69e | 4490 | s->set_symtab (symtab); |
24d74bb5 | 4491 | mdict_add_symbol (b->multidict (), s); |
c906108c SS |
4492 | } |
4493 | ||
025bb325 | 4494 | /* Add a new block B to a symtab S. */ |
c906108c SS |
4495 | |
4496 | static void | |
fba45db2 | 4497 | add_block (struct block *b, struct symtab *s) |
c906108c | 4498 | { |
346d1dfe TT |
4499 | /* Cast away "const", but that's ok because we're building the |
4500 | symtab and blockvector here. */ | |
44281e6c SM |
4501 | struct blockvector *bv |
4502 | = (struct blockvector *) s->compunit ()->blockvector (); | |
c906108c | 4503 | |
12b9c64f | 4504 | bv = (struct blockvector *) xrealloc ((void *) bv, |
c906108c | 4505 | (sizeof (struct blockvector) |
63d609de SM |
4506 | + bv->num_blocks () |
4507 | * sizeof (struct block))); | |
44281e6c | 4508 | if (bv != s->compunit ()->blockvector ()) |
c6159652 | 4509 | s->compunit ()->set_blockvector (bv); |
c906108c | 4510 | |
63d609de SM |
4511 | bv->set_block (bv->num_blocks (), b); |
4512 | bv->set_num_blocks (bv->num_blocks () + 1); | |
c906108c SS |
4513 | } |
4514 | ||
4515 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. | |
4516 | MIPS' linenumber encoding might need more than one byte | |
4517 | to describe it, LAST is used to detect these continuation lines. | |
4518 | ||
4519 | Combining lines with the same line number seems like a bad idea. | |
4520 | E.g: There could be a line number entry with the same line number after the | |
4521 | prologue and GDB should not ignore it (this is a better way to find | |
4522 | a prologue than mips_skip_prologue). | |
4523 | But due to the compressed line table format there are line number entries | |
4524 | for the same line which are needed to bridge the gap to the next | |
025bb325 | 4525 | line number entry. These entries have a bogus address info with them |
c906108c SS |
4526 | and we are unable to tell them from intended duplicate line number |
4527 | entries. | |
4528 | This is another reason why -ggdb debugging format is preferable. */ | |
4529 | ||
4530 | static int | |
fba45db2 | 4531 | add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last) |
c906108c SS |
4532 | { |
4533 | /* DEC c89 sometimes produces zero linenos which confuse gdb. | |
025bb325 | 4534 | Change them to something sensible. */ |
c906108c SS |
4535 | if (lineno == 0) |
4536 | lineno = 1; | |
4537 | if (last == 0) | |
025bb325 | 4538 | last = -2; /* Make sure we record first line. */ |
c906108c | 4539 | |
025bb325 | 4540 | if (last == lineno) /* Skip continuation lines. */ |
c906108c SS |
4541 | return lineno; |
4542 | ||
4543 | lt->item[lt->nitems].line = lineno; | |
0434c3ef | 4544 | lt->item[lt->nitems++].set_unrelocated_pc (unrelocated_addr (adr << 2)); |
c906108c SS |
4545 | return lineno; |
4546 | } | |
4547 | \f | |
025bb325 | 4548 | /* Sorting and reordering procedures. */ |
c906108c | 4549 | |
025bb325 | 4550 | /* Blocks with a smaller low bound should come first. */ |
c906108c | 4551 | |
39ef2f62 CB |
4552 | static bool |
4553 | block_is_less_than (const struct block *b1, const struct block *b2) | |
c906108c | 4554 | { |
4b8791e1 SM |
4555 | CORE_ADDR start1 = b1->start (); |
4556 | CORE_ADDR start2 = b2->start (); | |
39ef2f62 CB |
4557 | |
4558 | if (start1 != start2) | |
4559 | return start1 < start2; | |
4560 | ||
4b8791e1 | 4561 | return (b2->end ()) < (b1->end ()); |
c906108c SS |
4562 | } |
4563 | ||
4564 | /* Sort the blocks of a symtab S. | |
4565 | Reorder the blocks in the blockvector by code-address, | |
025bb325 | 4566 | as required by some MI search routines. */ |
c906108c SS |
4567 | |
4568 | static void | |
fba45db2 | 4569 | sort_blocks (struct symtab *s) |
c906108c | 4570 | { |
346d1dfe TT |
4571 | /* We have to cast away const here, but this is ok because we're |
4572 | constructing the blockvector in this code. */ | |
44281e6c SM |
4573 | struct blockvector *bv |
4574 | = (struct blockvector *) s->compunit ()->blockvector (); | |
c906108c | 4575 | |
63d609de | 4576 | if (bv->num_blocks () <= FIRST_LOCAL_BLOCK) |
c906108c SS |
4577 | { |
4578 | /* Cosmetic */ | |
63d609de SM |
4579 | if (bv->global_block ()->end () == 0) |
4580 | bv->global_block ()->set_start (0); | |
4581 | if (bv->static_block ()->end () == 0) | |
4582 | bv->static_block ()->set_start (0); | |
c906108c SS |
4583 | return; |
4584 | } | |
4585 | /* | |
4586 | * This is very unfortunate: normally all functions are compiled in | |
4587 | * the order they are found, but if the file is compiled -O3 things | |
4588 | * are very different. It would be nice to find a reliable test | |
4589 | * to detect -O3 images in advance. | |
4590 | */ | |
63d609de SM |
4591 | if (bv->num_blocks () > FIRST_LOCAL_BLOCK + 1) |
4592 | { | |
4593 | gdb::array_view<block *> blocks_view = bv->blocks (); | |
4594 | ||
4595 | std::sort (blocks_view.begin () + FIRST_LOCAL_BLOCK, | |
4596 | blocks_view.end (), block_is_less_than); | |
4597 | } | |
c906108c SS |
4598 | |
4599 | { | |
aa1ee363 | 4600 | CORE_ADDR high = 0; |
63d609de | 4601 | int i, j = bv->num_blocks (); |
c906108c SS |
4602 | |
4603 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) | |
63d609de SM |
4604 | if (high < bv->block (i)->end ()) |
4605 | high = bv->block (i)->end (); | |
4606 | bv->global_block ()->set_end (high); | |
c906108c SS |
4607 | } |
4608 | ||
63d609de SM |
4609 | bv->global_block ()->set_start (bv->block (FIRST_LOCAL_BLOCK)->start ()); |
4610 | bv->static_block ()->set_start (bv->global_block ()->start ()); | |
4611 | bv->static_block ()->set_end (bv->global_block ()->end ()); | |
c906108c SS |
4612 | } |
4613 | \f | |
4614 | ||
025bb325 | 4615 | /* Constructor/restructor/destructor procedures. */ |
c906108c | 4616 | |
de4f826b | 4617 | /* Allocate a new symtab for NAME. Needs an estimate of how many |
025bb325 | 4618 | linenumbers MAXLINES we'll put in it. */ |
c906108c | 4619 | |
43f3e411 | 4620 | static struct compunit_symtab * |
72b9f47f | 4621 | new_symtab (const char *name, int maxlines, struct objfile *objfile) |
c906108c | 4622 | { |
43f3e411 DE |
4623 | struct compunit_symtab *cust = allocate_compunit_symtab (objfile, name); |
4624 | struct symtab *symtab; | |
346d1dfe | 4625 | struct blockvector *bv; |
5ffa0793 | 4626 | enum language lang; |
c906108c | 4627 | |
43f3e411 DE |
4628 | add_compunit_symtab_to_objfile (cust); |
4629 | symtab = allocate_symtab (cust, name); | |
4630 | ||
5b607461 | 4631 | symtab->set_linetable (new_linetable (maxlines)); |
425d5e76 | 4632 | lang = cust->language (); |
c906108c | 4633 | |
025bb325 | 4634 | /* All symtabs must have at least two blocks. */ |
346d1dfe | 4635 | bv = new_bvect (2); |
69fb3874 TT |
4636 | bv->set_block (GLOBAL_BLOCK, new_block (objfile, NON_FUNCTION_BLOCK, lang)); |
4637 | bv->set_block (STATIC_BLOCK, new_block (objfile, NON_FUNCTION_BLOCK, lang)); | |
63d609de | 4638 | bv->static_block ()->set_superblock (bv->global_block ()); |
af39c5c8 | 4639 | cust->set_blockvector (bv); |
c906108c | 4640 | |
422f1ea2 | 4641 | cust->set_debugformat ("ECOFF"); |
43f3e411 | 4642 | return cust; |
c906108c SS |
4643 | } |
4644 | ||
025bb325 | 4645 | /* Allocate a new partial_symtab NAME. */ |
c906108c | 4646 | |
891813be | 4647 | static legacy_psymtab * |
7b249e47 TT |
4648 | new_psymtab (const char *name, psymtab_storage *partial_symtabs, |
4649 | struct objfile *objfile) | |
c906108c | 4650 | { |
891813be | 4651 | legacy_psymtab *psymtab; |
c906108c | 4652 | |
0072c873 | 4653 | psymtab = new legacy_psymtab (name, partial_symtabs, objfile->per_bfd); |
c906108c | 4654 | |
025bb325 | 4655 | /* Keep a backpointer to the file's symbols. */ |
c906108c | 4656 | |
e39db4db | 4657 | psymtab->read_symtab_private |
77845a9a | 4658 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, md_symloc); |
c906108c SS |
4659 | CUR_BFD (psymtab) = cur_bfd; |
4660 | DEBUG_SWAP (psymtab) = debug_swap; | |
4661 | DEBUG_INFO (psymtab) = debug_info; | |
4662 | PENDING_LIST (psymtab) = pending_list; | |
4663 | ||
025bb325 | 4664 | /* The way to turn this into a symtab is to call... */ |
891813be | 4665 | psymtab->legacy_read_symtab = mdebug_read_symtab; |
69b037c3 | 4666 | psymtab->legacy_expand_psymtab = mdebug_expand_psymtab; |
c906108c SS |
4667 | return (psymtab); |
4668 | } | |
4669 | ||
4670 | ||
4671 | /* Allocate a linetable array of the given SIZE. Since the struct | |
4672 | already includes one item, we subtract one when calculating the | |
4673 | proper size to allocate. */ | |
4674 | ||
4675 | static struct linetable * | |
fba45db2 | 4676 | new_linetable (int size) |
c906108c SS |
4677 | { |
4678 | struct linetable *l; | |
4679 | ||
30cc903e TT |
4680 | if (size > 1) |
4681 | --size; | |
4682 | size = size * sizeof (l->item) + sizeof (struct linetable); | |
c906108c SS |
4683 | l = (struct linetable *) xmalloc (size); |
4684 | l->nitems = 0; | |
4685 | return l; | |
4686 | } | |
4687 | ||
025bb325 | 4688 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, |
c906108c SS |
4689 | I am not so sure about the 3.4 ones. |
4690 | ||
4691 | Since the struct linetable already includes one item, we subtract one when | |
4692 | calculating the proper size to allocate. */ | |
4693 | ||
4694 | static struct linetable * | |
fba45db2 | 4695 | shrink_linetable (struct linetable *lt) |
c906108c | 4696 | { |
12b9c64f | 4697 | return (struct linetable *) xrealloc ((void *) lt, |
c906108c SS |
4698 | (sizeof (struct linetable) |
4699 | + ((lt->nitems - 1) | |
4700 | * sizeof (lt->item)))); | |
4701 | } | |
4702 | ||
025bb325 | 4703 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ |
c906108c SS |
4704 | |
4705 | static struct blockvector * | |
fba45db2 | 4706 | new_bvect (int nblocks) |
c906108c SS |
4707 | { |
4708 | struct blockvector *bv; | |
4709 | int size; | |
4710 | ||
4711 | size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); | |
4712 | bv = (struct blockvector *) xzalloc (size); | |
63d609de | 4713 | bv->set_num_blocks (nblocks); |
c906108c SS |
4714 | |
4715 | return bv; | |
4716 | } | |
4717 | ||
5ffa0793 | 4718 | /* Allocate and zero a new block of language LANGUAGE, and set its |
b026f593 | 4719 | BLOCK_MULTIDICT. If function is non-zero, assume the block is |
5ffa0793 PA |
4720 | associated to a function, and make sure that the symbols are stored |
4721 | linearly; otherwise, store them hashed. */ | |
c906108c SS |
4722 | |
4723 | static struct block * | |
69fb3874 TT |
4724 | new_block (struct objfile *objfile, enum block_type type, |
4725 | enum language language) | |
c906108c | 4726 | { |
52255383 | 4727 | struct block *retval = new (&objfile->objfile_obstack) block; |
c906108c | 4728 | |
de4f826b | 4729 | if (type == FUNCTION_BLOCK) |
24d74bb5 | 4730 | retval->set_multidict (mdict_create_linear_expandable (language)); |
de4f826b | 4731 | else |
24d74bb5 | 4732 | retval->set_multidict (mdict_create_hashed_expandable (language)); |
c906108c | 4733 | |
de4f826b | 4734 | return retval; |
c906108c SS |
4735 | } |
4736 | ||
025bb325 | 4737 | /* Create a new symbol with printname NAME. */ |
c906108c SS |
4738 | |
4739 | static struct symbol * | |
a121b7c1 | 4740 | new_symbol (const char *name) |
c906108c | 4741 | { |
8c14c3a3 | 4742 | struct symbol *s = new (&mdebugread_objfile->objfile_obstack) symbol; |
c906108c | 4743 | |
d3ecddab | 4744 | s->set_language (psymtab_language, &mdebugread_objfile->objfile_obstack); |
4d4eaa30 | 4745 | s->compute_and_set_names (name, true, mdebugread_objfile->per_bfd); |
c906108c SS |
4746 | return s; |
4747 | } | |
4748 | ||
025bb325 | 4749 | /* Create a new type with printname NAME. */ |
c906108c SS |
4750 | |
4751 | static struct type * | |
fba45db2 | 4752 | new_type (char *name) |
c906108c SS |
4753 | { |
4754 | struct type *t; | |
4755 | ||
8a17bdd9 | 4756 | t = type_allocator (mdebugread_objfile).new_type (); |
d0e39ea2 | 4757 | t->set_name (name); |
b4ba55a1 | 4758 | INIT_CPLUS_SPECIFIC (t); |
c906108c SS |
4759 | return t; |
4760 | } | |
4761 | \f | |
4762 | /* Read ECOFF debugging information from a BFD section. This is | |
4763 | called from elfread.c. It parses the section into a | |
4764 | ecoff_debug_info struct, and then lets the rest of the file handle | |
4765 | it as normal. */ | |
4766 | ||
4767 | void | |
fba45db2 KB |
4768 | elfmdebug_build_psymtabs (struct objfile *objfile, |
4769 | const struct ecoff_debug_swap *swap, asection *sec) | |
c906108c | 4770 | { |
98badbfd | 4771 | bfd *abfd = objfile->obfd.get (); |
c906108c | 4772 | struct ecoff_debug_info *info; |
7134143f DJ |
4773 | |
4774 | /* FIXME: It's not clear whether we should be getting minimal symbol | |
4775 | information from .mdebug in an ELF file, or whether we will. | |
4776 | Re-initialize the minimal symbol reader in case we do. */ | |
4777 | ||
d25e8719 | 4778 | minimal_symbol_reader reader (objfile); |
c906108c | 4779 | |
e39db4db | 4780 | info = XOBNEW (&objfile->objfile_obstack, ecoff_debug_info); |
c906108c SS |
4781 | |
4782 | if (!(*swap->read_debug_info) (abfd, sec, info)) | |
8a3fe4f8 | 4783 | error (_("Error reading ECOFF debugging information: %s"), |
c906108c SS |
4784 | bfd_errmsg (bfd_get_error ())); |
4785 | ||
8dddcb8f | 4786 | mdebug_build_psymtabs (reader, objfile, swap, info); |
7134143f | 4787 | |
d25e8719 | 4788 | reader.install (); |
c906108c | 4789 | } |
c906108c | 4790 | |
6c265988 | 4791 | void _initialize_mdebugread (); |
c906108c | 4792 | void |
6c265988 | 4793 | _initialize_mdebugread () |
c906108c | 4794 | { |
f1e6e072 TT |
4795 | mdebug_register_index |
4796 | = register_symbol_register_impl (LOC_REGISTER, &mdebug_register_funcs); | |
4797 | mdebug_regparm_index | |
4798 | = register_symbol_register_impl (LOC_REGPARM_ADDR, &mdebug_register_funcs); | |
c906108c | 4799 | } |