Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Read a symbol table in ECOFF format (Third-Eye). |
b6ba6518 | 2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
1e698235 | 3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
c906108c SS |
4 | Free Software Foundation, Inc. |
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 | |
13 | the Free Software Foundation; either version 2 of the License, or | |
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 JM |
21 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
25 | |
26 | /* This module provides the function mdebug_build_psymtabs. It reads | |
27 | ECOFF debugging information into partial symbol tables. The | |
28 | debugging information is read from two structures. A struct | |
29 | ecoff_debug_swap includes the sizes of each ECOFF structure and | |
30 | swapping routines; these are fixed for a particular target. A | |
31 | struct ecoff_debug_info points to the debugging information for a | |
32 | particular object file. | |
33 | ||
34 | ECOFF symbol tables are mostly written in the byte order of the | |
35 | target machine. However, one section of the table (the auxiliary | |
36 | symbol information) is written in the host byte order. There is a | |
37 | bit in the other symbol info which describes which host byte order | |
38 | was used. ECOFF thereby takes the trophy from Intel `b.out' for | |
39 | the most brain-dead adaptation of a file format to byte order. | |
40 | ||
41 | This module can read all four of the known byte-order combinations, | |
42 | on any type of host. */ | |
43 | ||
44 | #include "defs.h" | |
45 | #include "symtab.h" | |
46 | #include "gdbtypes.h" | |
47 | #include "gdbcore.h" | |
48 | #include "symfile.h" | |
49 | #include "objfiles.h" | |
04ea0df1 | 50 | #include "gdb_obstack.h" |
c906108c SS |
51 | #include "buildsym.h" |
52 | #include "stabsread.h" | |
53 | #include "complaints.h" | |
54 | #include "demangle.h" | |
261397f8 | 55 | #include "gdb_assert.h" |
c906108c SS |
56 | |
57 | /* These are needed if the tm.h file does not contain the necessary | |
58 | mips specific definitions. */ | |
59 | ||
60 | #ifndef MIPS_EFI_SYMBOL_NAME | |
61 | #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__" | |
a14ed312 | 62 | extern void ecoff_relocate_efi (struct symbol *, CORE_ADDR); |
c906108c SS |
63 | #include "coff/sym.h" |
64 | #include "coff/symconst.h" | |
c5aa993b JM |
65 | typedef struct mips_extra_func_info |
66 | { | |
67 | long numargs; | |
68 | PDR pdr; | |
69 | } | |
70 | *mips_extra_func_info_t; | |
c906108c SS |
71 | #ifndef RA_REGNUM |
72 | #define RA_REGNUM 0 | |
73 | #endif | |
74 | #endif | |
75 | ||
76 | #ifdef USG | |
77 | #include <sys/types.h> | |
78 | #endif | |
79 | ||
80 | #include "gdb_stat.h" | |
81 | #include "gdb_string.h" | |
82 | ||
c906108c SS |
83 | #include "bfd.h" |
84 | ||
85 | #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */ | |
86 | ||
87 | #include "libaout.h" /* Private BFD a.out information. */ | |
88 | #include "aout/aout64.h" | |
89 | #include "aout/stab_gnu.h" /* STABS information */ | |
90 | ||
91 | #include "expression.h" | |
d3119d1e | 92 | #include "language.h" /* For local_hex_string() */ |
c906108c | 93 | |
a14ed312 | 94 | extern void _initialize_mdebugread (void); |
c906108c | 95 | |
c906108c SS |
96 | /* Provide a way to test if we have both ECOFF and ELF symbol tables. |
97 | We use this define in order to know whether we should override a | |
98 | symbol's ECOFF section with its ELF section. This is necessary in | |
99 | case the symbol's ELF section could not be represented in ECOFF. */ | |
100 | #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
101 | && bfd_get_section_by_name (bfd, ".mdebug") != NULL) | |
c906108c | 102 | \f |
c5aa993b | 103 | |
c906108c SS |
104 | /* We put a pointer to this structure in the read_symtab_private field |
105 | of the psymtab. */ | |
106 | ||
107 | struct symloc | |
c5aa993b JM |
108 | { |
109 | /* Index of the FDR that this psymtab represents. */ | |
110 | int fdr_idx; | |
111 | /* The BFD that the psymtab was created from. */ | |
112 | bfd *cur_bfd; | |
113 | const struct ecoff_debug_swap *debug_swap; | |
114 | struct ecoff_debug_info *debug_info; | |
115 | struct mdebug_pending **pending_list; | |
116 | /* Pointer to external symbols for this file. */ | |
117 | EXTR *extern_tab; | |
118 | /* Size of extern_tab. */ | |
119 | int extern_count; | |
120 | enum language pst_language; | |
121 | }; | |
c906108c SS |
122 | |
123 | #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private) | |
124 | #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx) | |
125 | #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd) | |
126 | #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap) | |
127 | #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info) | |
128 | #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list) | |
129 | ||
130 | #define SC_IS_TEXT(sc) ((sc) == scText \ | |
131 | || (sc) == scRConst \ | |
132 | || (sc) == scInit \ | |
133 | || (sc) == scFini) | |
134 | #define SC_IS_DATA(sc) ((sc) == scData \ | |
135 | || (sc) == scSData \ | |
136 | || (sc) == scRData \ | |
137 | || (sc) == scPData \ | |
138 | || (sc) == scXData) | |
139 | #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon) | |
0e931cf0 JB |
140 | #define SC_IS_BSS(sc) ((sc) == scBss) |
141 | #define SC_IS_SBSS(sc) ((sc) == scSBss) | |
c906108c | 142 | #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined) |
c906108c | 143 | \f |
c906108c | 144 | /* Various complaints about symbol reading that don't abort the process */ |
23136709 KB |
145 | static void |
146 | index_complaint (const char *arg1) | |
147 | { | |
148 | complaint (&symfile_complaints, "bad aux index at symbol %s", arg1); | |
149 | } | |
c906108c | 150 | |
23136709 KB |
151 | static void |
152 | unknown_ext_complaint (const char *arg1) | |
153 | { | |
154 | complaint (&symfile_complaints, "unknown external symbol %s", arg1); | |
155 | } | |
c906108c | 156 | |
23136709 KB |
157 | static void |
158 | basic_type_complaint (int arg1, const char *arg2) | |
159 | { | |
160 | complaint (&symfile_complaints, "cannot map ECOFF basic type 0x%x for %s", | |
161 | arg1, arg2); | |
162 | } | |
c906108c | 163 | |
23136709 KB |
164 | static void |
165 | bad_tag_guess_complaint (const char *arg1) | |
166 | { | |
167 | complaint (&symfile_complaints, "guessed tag type of %s incorrectly", arg1); | |
168 | } | |
c906108c | 169 | |
23136709 KB |
170 | static void |
171 | bad_rfd_entry_complaint (const char *arg1, int arg2, int arg3) | |
172 | { | |
173 | complaint (&symfile_complaints, "bad rfd entry for %s: file %d, index %d", | |
174 | arg1, arg2, arg3); | |
175 | } | |
c906108c | 176 | |
23136709 KB |
177 | static void |
178 | unexpected_type_code_complaint (const char *arg1) | |
179 | { | |
180 | complaint (&symfile_complaints, "unexpected type code for %s", arg1); | |
181 | } | |
c906108c SS |
182 | |
183 | /* Macros and extra defs */ | |
184 | ||
185 | /* Puns: hard to find whether -g was used and how */ | |
186 | ||
187 | #define MIN_GLEVEL GLEVEL_0 | |
188 | #define compare_glevel(a,b) \ | |
189 | (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \ | |
190 | ((b) == GLEVEL_3) ? -1 : (int)((b) - (a))) | |
191 | \f | |
192 | /* Things that really are local to this module */ | |
193 | ||
194 | /* Remember what we deduced to be the source language of this psymtab. */ | |
195 | ||
196 | static enum language psymtab_language = language_unknown; | |
197 | ||
198 | /* Current BFD. */ | |
199 | ||
200 | static bfd *cur_bfd; | |
201 | ||
202 | /* How to parse debugging information for CUR_BFD. */ | |
203 | ||
204 | static const struct ecoff_debug_swap *debug_swap; | |
205 | ||
206 | /* Pointers to debugging information for CUR_BFD. */ | |
207 | ||
208 | static struct ecoff_debug_info *debug_info; | |
209 | ||
210 | /* Pointer to current file decriptor record, and its index */ | |
211 | ||
212 | static FDR *cur_fdr; | |
213 | static int cur_fd; | |
214 | ||
215 | /* Index of current symbol */ | |
216 | ||
217 | static int cur_sdx; | |
218 | ||
219 | /* Note how much "debuggable" this image is. We would like | |
220 | to see at least one FDR with full symbols */ | |
221 | ||
222 | static int max_gdbinfo; | |
223 | static int max_glevel; | |
224 | ||
225 | /* When examining .o files, report on undefined symbols */ | |
226 | ||
227 | static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs; | |
228 | ||
229 | /* Pseudo symbol to use when putting stabs into the symbol table. */ | |
230 | ||
231 | static char stabs_symbol[] = STABS_SYMBOL; | |
232 | ||
233 | /* Types corresponding to mdebug format bt* basic types. */ | |
234 | ||
235 | static struct type *mdebug_type_void; | |
236 | static struct type *mdebug_type_char; | |
237 | static struct type *mdebug_type_short; | |
238 | static struct type *mdebug_type_int_32; | |
239 | #define mdebug_type_int mdebug_type_int_32 | |
240 | static struct type *mdebug_type_int_64; | |
241 | static struct type *mdebug_type_long_32; | |
242 | static struct type *mdebug_type_long_64; | |
243 | static struct type *mdebug_type_long_long_64; | |
244 | static struct type *mdebug_type_unsigned_char; | |
245 | static struct type *mdebug_type_unsigned_short; | |
246 | static struct type *mdebug_type_unsigned_int_32; | |
247 | static struct type *mdebug_type_unsigned_int_64; | |
248 | static struct type *mdebug_type_unsigned_long_32; | |
249 | static struct type *mdebug_type_unsigned_long_64; | |
250 | static struct type *mdebug_type_unsigned_long_long_64; | |
251 | static struct type *mdebug_type_adr_32; | |
252 | static struct type *mdebug_type_adr_64; | |
253 | static struct type *mdebug_type_float; | |
254 | static struct type *mdebug_type_double; | |
255 | static struct type *mdebug_type_complex; | |
256 | static struct type *mdebug_type_double_complex; | |
257 | static struct type *mdebug_type_fixed_dec; | |
258 | static struct type *mdebug_type_float_dec; | |
259 | static struct type *mdebug_type_string; | |
260 | ||
261 | /* Types for symbols from files compiled without debugging info. */ | |
262 | ||
263 | static struct type *nodebug_func_symbol_type; | |
264 | static struct type *nodebug_var_symbol_type; | |
265 | ||
266 | /* Nonzero if we have seen ecoff debugging info for a file. */ | |
267 | ||
268 | static int found_ecoff_debugging_info; | |
269 | ||
270 | /* Forward declarations */ | |
271 | ||
12b9c64f AO |
272 | static int upgrade_type (int, struct type **, int, union aux_ext *, |
273 | int, char *); | |
c906108c | 274 | |
a14ed312 | 275 | static void parse_partial_symbols (struct objfile *); |
c906108c | 276 | |
a14ed312 | 277 | static int has_opaque_xref (FDR *, SYMR *); |
c906108c | 278 | |
12b9c64f AO |
279 | static int cross_ref (int, union aux_ext *, struct type **, enum type_code, |
280 | char **, int, char *); | |
c906108c | 281 | |
a14ed312 | 282 | static struct symbol *new_symbol (char *); |
c906108c | 283 | |
a14ed312 | 284 | static struct type *new_type (char *); |
c906108c | 285 | |
a14ed312 | 286 | static struct block *new_block (int); |
c906108c | 287 | |
a14ed312 | 288 | static struct symtab *new_symtab (char *, int, int, struct objfile *); |
c906108c | 289 | |
a14ed312 | 290 | static struct linetable *new_linetable (int); |
c906108c | 291 | |
a14ed312 | 292 | static struct blockvector *new_bvect (int); |
c906108c | 293 | |
a14ed312 KB |
294 | static struct type *parse_type (int, union aux_ext *, unsigned int, int *, |
295 | int, char *); | |
c906108c | 296 | |
a14ed312 KB |
297 | static struct symbol *mylookup_symbol (char *, struct block *, namespace_enum, |
298 | enum address_class); | |
c906108c | 299 | |
a14ed312 | 300 | static struct block *shrink_block (struct block *, struct symtab *); |
c906108c | 301 | |
a14ed312 | 302 | static void sort_blocks (struct symtab *); |
c906108c | 303 | |
a14ed312 | 304 | static struct partial_symtab *new_psymtab (char *, struct objfile *); |
c906108c | 305 | |
a14ed312 | 306 | static void psymtab_to_symtab_1 (struct partial_symtab *, char *); |
c906108c | 307 | |
a14ed312 | 308 | static void add_block (struct block *, struct symtab *); |
c906108c | 309 | |
a14ed312 | 310 | static void add_symbol (struct symbol *, struct block *); |
c906108c | 311 | |
a14ed312 | 312 | static int add_line (struct linetable *, int, CORE_ADDR, int); |
c906108c | 313 | |
a14ed312 | 314 | static struct linetable *shrink_linetable (struct linetable *); |
c906108c | 315 | |
12b9c64f AO |
316 | static void handle_psymbol_enumerators (struct objfile *, FDR *, int, |
317 | CORE_ADDR); | |
c906108c | 318 | |
a14ed312 | 319 | static char *mdebug_next_symbol_text (struct objfile *); |
c906108c SS |
320 | \f |
321 | /* Address bounds for the signal trampoline in inferior, if any */ | |
322 | ||
323 | CORE_ADDR sigtramp_address, sigtramp_end; | |
324 | ||
325 | /* Allocate zeroed memory */ | |
326 | ||
12b9c64f | 327 | static void * |
fba45db2 | 328 | xzalloc (unsigned int size) |
c906108c | 329 | { |
12b9c64f | 330 | void *p = xmalloc (size); |
c906108c SS |
331 | |
332 | memset (p, 0, size); | |
333 | return p; | |
334 | } | |
335 | ||
336 | /* Exported procedure: Builds a symtab from the PST partial one. | |
337 | Restores the environment in effect when PST was created, delegates | |
338 | most of the work to an ancillary procedure, and sorts | |
339 | and reorders the symtab list at the end */ | |
340 | ||
341 | static void | |
fba45db2 | 342 | mdebug_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
343 | { |
344 | ||
345 | if (!pst) | |
346 | return; | |
347 | ||
348 | if (info_verbose) | |
349 | { | |
350 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
351 | gdb_flush (gdb_stdout); | |
352 | } | |
353 | ||
354 | next_symbol_text_func = mdebug_next_symbol_text; | |
355 | ||
356 | psymtab_to_symtab_1 (pst, pst->filename); | |
357 | ||
358 | /* Match with global symbols. This only needs to be done once, | |
359 | after all of the symtabs and dependencies have been read in. */ | |
360 | scan_file_globals (pst->objfile); | |
361 | ||
362 | if (info_verbose) | |
363 | printf_filtered ("done.\n"); | |
364 | } | |
365 | \f | |
366 | /* File-level interface functions */ | |
367 | ||
368 | /* Find a file descriptor given its index RF relative to a file CF */ | |
369 | ||
370 | static FDR * | |
fba45db2 | 371 | get_rfd (int cf, int rf) |
c906108c SS |
372 | { |
373 | FDR *fdrs; | |
374 | register FDR *f; | |
375 | RFDT rfd; | |
376 | ||
377 | fdrs = debug_info->fdr; | |
378 | f = fdrs + cf; | |
379 | /* Object files do not have the RFD table, all refs are absolute */ | |
380 | if (f->rfdBase == 0) | |
381 | return fdrs + rf; | |
382 | (*debug_swap->swap_rfd_in) (cur_bfd, | |
c5aa993b JM |
383 | ((char *) debug_info->external_rfd |
384 | + ((f->rfdBase + rf) | |
385 | * debug_swap->external_rfd_size)), | |
386 | &rfd); | |
c906108c SS |
387 | return fdrs + rfd; |
388 | } | |
389 | ||
390 | /* Return a safer print NAME for a file descriptor */ | |
391 | ||
392 | static char * | |
fba45db2 | 393 | fdr_name (FDR *f) |
c906108c SS |
394 | { |
395 | if (f->rss == -1) | |
396 | return "<stripped file>"; | |
397 | if (f->rss == 0) | |
398 | return "<NFY>"; | |
399 | return debug_info->ss + f->issBase + f->rss; | |
400 | } | |
401 | ||
402 | ||
403 | /* Read in and parse the symtab of the file OBJFILE. Symbols from | |
404 | different sections are relocated via the SECTION_OFFSETS. */ | |
405 | ||
406 | void | |
fba45db2 KB |
407 | mdebug_build_psymtabs (struct objfile *objfile, |
408 | const struct ecoff_debug_swap *swap, | |
409 | struct ecoff_debug_info *info) | |
c906108c SS |
410 | { |
411 | cur_bfd = objfile->obfd; | |
412 | debug_swap = swap; | |
413 | debug_info = info; | |
414 | ||
d3d55eeb EZ |
415 | stabsread_new_init (); |
416 | buildsym_new_init (); | |
417 | free_header_files (); | |
418 | init_header_files (); | |
419 | ||
c906108c SS |
420 | /* Make sure all the FDR information is swapped in. */ |
421 | if (info->fdr == (FDR *) NULL) | |
422 | { | |
423 | char *fdr_src; | |
424 | char *fdr_end; | |
425 | FDR *fdr_ptr; | |
426 | ||
427 | info->fdr = (FDR *) obstack_alloc (&objfile->psymbol_obstack, | |
428 | (info->symbolic_header.ifdMax | |
429 | * sizeof (FDR))); | |
430 | fdr_src = info->external_fdr; | |
431 | fdr_end = (fdr_src | |
432 | + info->symbolic_header.ifdMax * swap->external_fdr_size); | |
433 | fdr_ptr = info->fdr; | |
434 | for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++) | |
435 | (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr); | |
436 | } | |
437 | ||
d4f3574e | 438 | parse_partial_symbols (objfile); |
c906108c SS |
439 | |
440 | #if 0 | |
441 | /* Check to make sure file was compiled with -g. If not, warn the | |
442 | user of this limitation. */ | |
443 | if (compare_glevel (max_glevel, GLEVEL_2) < 0) | |
444 | { | |
445 | if (max_gdbinfo == 0) | |
446 | printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n", | |
c5aa993b | 447 | objfile->name); |
c906108c SS |
448 | printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n"); |
449 | gdb_flush (gdb_stdout); | |
450 | } | |
451 | #endif | |
452 | } | |
453 | \f | |
454 | /* Local utilities */ | |
455 | ||
456 | /* Map of FDR indexes to partial symtabs */ | |
457 | ||
458 | struct pst_map | |
459 | { | |
460 | struct partial_symtab *pst; /* the psymtab proper */ | |
461 | long n_globals; /* exported globals (external symbols) */ | |
462 | long globals_offset; /* cumulative */ | |
463 | }; | |
464 | ||
465 | ||
466 | /* Utility stack, used to nest procedures and blocks properly. | |
467 | It is a doubly linked list, to avoid too many alloc/free. | |
468 | Since we might need it quite a few times it is NOT deallocated | |
469 | after use. */ | |
470 | ||
471 | static struct parse_stack | |
c5aa993b JM |
472 | { |
473 | struct parse_stack *next, *prev; | |
474 | struct symtab *cur_st; /* Current symtab. */ | |
475 | struct block *cur_block; /* Block in it. */ | |
476 | ||
477 | /* What are we parsing. stFile, or stBlock are for files and | |
478 | blocks. stProc or stStaticProc means we have seen the start of a | |
479 | procedure, but not the start of the block within in. When we see | |
480 | the start of that block, we change it to stNil, without pushing a | |
481 | new block, i.e. stNil means both a procedure and a block. */ | |
482 | ||
483 | int blocktype; | |
484 | ||
485 | int maxsyms; /* Max symbols in this block. */ | |
486 | struct type *cur_type; /* Type we parse fields for. */ | |
487 | int cur_field; /* Field number in cur_type. */ | |
488 | CORE_ADDR procadr; /* Start addres of this procedure */ | |
489 | int numargs; /* Its argument count */ | |
490 | } | |
c906108c SS |
491 | |
492 | *top_stack; /* Top stack ptr */ | |
493 | ||
494 | ||
495 | /* Enter a new lexical context */ | |
496 | ||
497 | static void | |
fba45db2 | 498 | push_parse_stack (void) |
c906108c SS |
499 | { |
500 | struct parse_stack *new; | |
501 | ||
502 | /* Reuse frames if possible */ | |
503 | if (top_stack && top_stack->prev) | |
504 | new = top_stack->prev; | |
505 | else | |
506 | new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack)); | |
507 | /* Initialize new frame with previous content */ | |
508 | if (top_stack) | |
509 | { | |
510 | register struct parse_stack *prev = new->prev; | |
511 | ||
512 | *new = *top_stack; | |
513 | top_stack->prev = new; | |
514 | new->prev = prev; | |
515 | new->next = top_stack; | |
516 | } | |
517 | top_stack = new; | |
518 | } | |
519 | ||
520 | /* Exit a lexical context */ | |
521 | ||
522 | static void | |
fba45db2 | 523 | pop_parse_stack (void) |
c906108c SS |
524 | { |
525 | if (!top_stack) | |
526 | return; | |
527 | if (top_stack->next) | |
528 | top_stack = top_stack->next; | |
529 | } | |
530 | ||
531 | ||
532 | /* Cross-references might be to things we haven't looked at | |
533 | yet, e.g. type references. To avoid too many type | |
534 | duplications we keep a quick fixup table, an array | |
535 | of lists of references indexed by file descriptor */ | |
536 | ||
537 | struct mdebug_pending | |
538 | { | |
539 | struct mdebug_pending *next; /* link */ | |
540 | char *s; /* the unswapped symbol */ | |
541 | struct type *t; /* its partial type descriptor */ | |
542 | }; | |
543 | ||
544 | ||
545 | /* The pending information is kept for an entire object file, and used | |
546 | to be in the sym_private field. I took it out when I split | |
547 | mdebugread from mipsread, because this might not be the only type | |
548 | of symbols read from an object file. Instead, we allocate the | |
549 | pending information table when we create the partial symbols, and | |
550 | we store a pointer to the single table in each psymtab. */ | |
551 | ||
552 | static struct mdebug_pending **pending_list; | |
553 | ||
554 | /* Check whether we already saw symbol SH in file FH */ | |
555 | ||
556 | static struct mdebug_pending * | |
fba45db2 | 557 | is_pending_symbol (FDR *fh, char *sh) |
c906108c SS |
558 | { |
559 | int f_idx = fh - debug_info->fdr; | |
560 | register struct mdebug_pending *p; | |
561 | ||
562 | /* Linear search is ok, list is typically no more than 10 deep */ | |
563 | for (p = pending_list[f_idx]; p; p = p->next) | |
564 | if (p->s == sh) | |
565 | break; | |
566 | return p; | |
567 | } | |
568 | ||
569 | /* Add a new symbol SH of type T */ | |
570 | ||
571 | static void | |
fba45db2 | 572 | add_pending (FDR *fh, char *sh, struct type *t) |
c906108c SS |
573 | { |
574 | int f_idx = fh - debug_info->fdr; | |
575 | struct mdebug_pending *p = is_pending_symbol (fh, sh); | |
576 | ||
577 | /* Make sure we do not make duplicates */ | |
578 | if (!p) | |
579 | { | |
580 | p = ((struct mdebug_pending *) | |
581 | obstack_alloc (¤t_objfile->psymbol_obstack, | |
582 | sizeof (struct mdebug_pending))); | |
583 | p->s = sh; | |
584 | p->t = t; | |
585 | p->next = pending_list[f_idx]; | |
586 | pending_list[f_idx] = p; | |
587 | } | |
588 | } | |
589 | \f | |
590 | ||
591 | /* Parsing Routines proper. */ | |
592 | ||
593 | /* Parse a single symbol. Mostly just make up a GDB symbol for it. | |
594 | For blocks, procedures and types we open a new lexical context. | |
595 | This is basically just a big switch on the symbol's type. Argument | |
596 | AX is the base pointer of aux symbols for this file (fh->iauxBase). | |
597 | EXT_SH points to the unswapped symbol, which is needed for struct, | |
598 | union, etc., types; it is NULL for an EXTR. BIGEND says whether | |
599 | aux symbols are big-endian or little-endian. Return count of | |
600 | SYMR's handled (normally one). */ | |
601 | ||
602 | static int | |
fba45db2 KB |
603 | parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend, |
604 | struct section_offsets *section_offsets, struct objfile *objfile) | |
c906108c SS |
605 | { |
606 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
12b9c64f | 607 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c SS |
608 | char *name; |
609 | struct symbol *s; | |
610 | struct block *b; | |
611 | struct mdebug_pending *pend; | |
612 | struct type *t; | |
613 | struct field *f; | |
614 | int count = 1; | |
615 | enum address_class class; | |
616 | TIR tir; | |
617 | long svalue = sh->value; | |
618 | int bitsize; | |
619 | ||
620 | if (ext_sh == (char *) NULL) | |
621 | name = debug_info->ssext + sh->iss; | |
622 | else | |
623 | name = debug_info->ss + cur_fdr->issBase + sh->iss; | |
624 | ||
625 | switch (sh->sc) | |
626 | { | |
627 | case scText: | |
628 | case scRConst: | |
629 | /* Do not relocate relative values. | |
c5aa993b JM |
630 | The value of a stEnd symbol is the displacement from the |
631 | corresponding start symbol value. | |
632 | The value of a stBlock symbol is the displacement from the | |
633 | procedure address. */ | |
c906108c | 634 | if (sh->st != stEnd && sh->st != stBlock) |
b8fbeb18 | 635 | sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
636 | break; |
637 | case scData: | |
638 | case scSData: | |
639 | case scRData: | |
640 | case scPData: | |
641 | case scXData: | |
b8fbeb18 | 642 | sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
643 | break; |
644 | case scBss: | |
645 | case scSBss: | |
b8fbeb18 | 646 | sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
647 | break; |
648 | } | |
649 | ||
650 | switch (sh->st) | |
651 | { | |
652 | case stNil: | |
653 | break; | |
654 | ||
655 | case stGlobal: /* external symbol, goes into global block */ | |
656 | class = LOC_STATIC; | |
657 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
658 | GLOBAL_BLOCK); | |
659 | s = new_symbol (name); | |
660 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
661 | goto data; | |
662 | ||
663 | case stStatic: /* static data, goes into current block. */ | |
664 | class = LOC_STATIC; | |
665 | b = top_stack->cur_block; | |
666 | s = new_symbol (name); | |
c5aa993b | 667 | if (SC_IS_COMMON (sh->sc)) |
c906108c SS |
668 | { |
669 | /* It is a FORTRAN common block. At least for SGI Fortran the | |
670 | address is not in the symbol; we need to fix it later in | |
671 | scan_file_globals. */ | |
672 | int bucket = hashname (SYMBOL_NAME (s)); | |
673 | SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket]; | |
674 | global_sym_chain[bucket] = s; | |
675 | } | |
676 | else | |
677 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
678 | goto data; | |
679 | ||
680 | case stLocal: /* local variable, goes into current block */ | |
681 | if (sh->sc == scRegister) | |
682 | { | |
683 | class = LOC_REGISTER; | |
684 | svalue = ECOFF_REG_TO_REGNUM (svalue); | |
685 | } | |
686 | else | |
687 | class = LOC_LOCAL; | |
688 | b = top_stack->cur_block; | |
689 | s = new_symbol (name); | |
690 | SYMBOL_VALUE (s) = svalue; | |
691 | ||
692 | data: /* Common code for symbols describing data */ | |
693 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
694 | SYMBOL_CLASS (s) = class; | |
695 | add_symbol (s, b); | |
696 | ||
697 | /* Type could be missing if file is compiled without debugging info. */ | |
c5aa993b | 698 | if (SC_IS_UNDEF (sh->sc) |
c906108c SS |
699 | || sh->sc == scNil || sh->index == indexNil) |
700 | SYMBOL_TYPE (s) = nodebug_var_symbol_type; | |
701 | else | |
702 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
703 | /* Value of a data symbol is its memory address */ | |
704 | break; | |
705 | ||
706 | case stParam: /* arg to procedure, goes into current block */ | |
707 | max_gdbinfo++; | |
708 | found_ecoff_debugging_info = 1; | |
709 | top_stack->numargs++; | |
710 | ||
711 | /* Special GNU C++ name. */ | |
712 | if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0) | |
713 | name = "this"; /* FIXME, not alloc'd in obstack */ | |
714 | s = new_symbol (name); | |
715 | ||
716 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
717 | switch (sh->sc) | |
718 | { | |
719 | case scRegister: | |
720 | /* Pass by value in register. */ | |
c5aa993b | 721 | SYMBOL_CLASS (s) = LOC_REGPARM; |
c906108c SS |
722 | svalue = ECOFF_REG_TO_REGNUM (svalue); |
723 | break; | |
724 | case scVar: | |
725 | /* Pass by reference on stack. */ | |
c5aa993b | 726 | SYMBOL_CLASS (s) = LOC_REF_ARG; |
c906108c SS |
727 | break; |
728 | case scVarRegister: | |
729 | /* Pass by reference in register. */ | |
c5aa993b | 730 | SYMBOL_CLASS (s) = LOC_REGPARM_ADDR; |
c906108c SS |
731 | svalue = ECOFF_REG_TO_REGNUM (svalue); |
732 | break; | |
733 | default: | |
734 | /* Pass by value on stack. */ | |
c5aa993b | 735 | SYMBOL_CLASS (s) = LOC_ARG; |
c906108c SS |
736 | break; |
737 | } | |
738 | SYMBOL_VALUE (s) = svalue; | |
739 | SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); | |
740 | add_symbol (s, top_stack->cur_block); | |
741 | break; | |
742 | ||
743 | case stLabel: /* label, goes into current block */ | |
744 | s = new_symbol (name); | |
745 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; /* so that it can be used */ | |
746 | SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */ | |
747 | SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; | |
748 | SYMBOL_TYPE (s) = mdebug_type_int; | |
749 | add_symbol (s, top_stack->cur_block); | |
750 | break; | |
751 | ||
752 | case stProc: /* Procedure, usually goes into global block */ | |
753 | case stStaticProc: /* Static procedure, goes into current block */ | |
1fb4c65b JB |
754 | /* For stProc symbol records, we need to check the storage class |
755 | as well, as only (stProc, scText) entries represent "real" | |
756 | procedures - See the Compaq document titled "Object File / | |
757 | Symbol Table Format Specification" for more information. | |
758 | If the storage class is not scText, we discard the whole block | |
759 | of symbol records for this stProc. */ | |
760 | if (sh->st == stProc && sh->sc != scText) | |
761 | { | |
762 | char *ext_tsym = ext_sh; | |
763 | int keep_counting = 1; | |
764 | SYMR tsym; | |
765 | ||
766 | while (keep_counting) | |
767 | { | |
768 | ext_tsym += external_sym_size; | |
769 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
770 | count++; | |
771 | switch (tsym.st) | |
772 | { | |
773 | case stParam: | |
774 | break; | |
775 | case stEnd: | |
776 | keep_counting = 0; | |
777 | break; | |
778 | default: | |
779 | complaint (&symfile_complaints, | |
780 | "unknown symbol type 0x%x", sh->st); | |
781 | break; | |
782 | } | |
783 | } | |
784 | break; | |
785 | } | |
c906108c SS |
786 | s = new_symbol (name); |
787 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
788 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
789 | /* Type of the return value */ | |
c5aa993b | 790 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
791 | t = mdebug_type_int; |
792 | else | |
793 | { | |
794 | t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name); | |
0004e5a2 | 795 | if (STREQ (name, "malloc") && TYPE_CODE (t) == TYPE_CODE_VOID) |
c906108c SS |
796 | { |
797 | /* I don't know why, but, at least under Alpha GNU/Linux, | |
c5aa993b JM |
798 | when linking against a malloc without debugging |
799 | symbols, its read as a function returning void---this | |
800 | is bad because it means we cannot call functions with | |
801 | string arguments interactively; i.e., "call | |
802 | printf("howdy\n")" would fail with the error message | |
803 | "program has no memory available". To avoid this, we | |
804 | patch up the type and make it void* | |
805 | instead. (davidm@azstarnet.com) | |
806 | */ | |
c906108c SS |
807 | t = make_pointer_type (t, NULL); |
808 | } | |
809 | } | |
810 | b = top_stack->cur_block; | |
811 | if (sh->st == stProc) | |
812 | { | |
813 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
814 | /* The next test should normally be true, but provides a | |
815 | hook for nested functions (which we don't want to make | |
816 | global). */ | |
817 | if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) | |
818 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
819 | /* Irix 5 sometimes has duplicate names for the same | |
820 | function. We want to add such names up at the global | |
821 | level, not as a nested function. */ | |
822 | else if (sh->value == top_stack->procadr) | |
823 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
824 | } | |
825 | add_symbol (s, b); | |
826 | ||
827 | /* Make a type for the procedure itself */ | |
828 | SYMBOL_TYPE (s) = lookup_function_type (t); | |
829 | ||
1e698235 DJ |
830 | /* All functions in C++ have prototypes. For C we don't have enough |
831 | information in the debug info. */ | |
832 | if (SYMBOL_LANGUAGE (s) == language_cplus) | |
833 | TYPE_FLAGS (SYMBOL_TYPE (s)) |= TYPE_FLAG_PROTOTYPED; | |
834 | ||
c906108c SS |
835 | /* Create and enter a new lexical context */ |
836 | b = new_block (top_stack->maxsyms); | |
837 | SYMBOL_BLOCK_VALUE (s) = b; | |
838 | BLOCK_FUNCTION (b) = s; | |
839 | BLOCK_START (b) = BLOCK_END (b) = sh->value; | |
840 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
841 | add_block (b, top_stack->cur_st); | |
842 | ||
843 | /* Not if we only have partial info */ | |
c5aa993b | 844 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
845 | break; |
846 | ||
847 | push_parse_stack (); | |
848 | top_stack->cur_block = b; | |
849 | top_stack->blocktype = sh->st; | |
850 | top_stack->cur_type = SYMBOL_TYPE (s); | |
851 | top_stack->cur_field = -1; | |
852 | top_stack->procadr = sh->value; | |
853 | top_stack->numargs = 0; | |
854 | break; | |
855 | ||
856 | /* Beginning of code for structure, union, and enum definitions. | |
c5aa993b | 857 | They all share a common set of local variables, defined here. */ |
c906108c SS |
858 | { |
859 | enum type_code type_code; | |
860 | char *ext_tsym; | |
861 | int nfields; | |
862 | long max_value; | |
863 | struct field *f; | |
864 | ||
865 | case stStruct: /* Start a block defining a struct type */ | |
866 | type_code = TYPE_CODE_STRUCT; | |
867 | goto structured_common; | |
868 | ||
869 | case stUnion: /* Start a block defining a union type */ | |
870 | type_code = TYPE_CODE_UNION; | |
871 | goto structured_common; | |
872 | ||
873 | case stEnum: /* Start a block defining an enum type */ | |
874 | type_code = TYPE_CODE_ENUM; | |
875 | goto structured_common; | |
876 | ||
877 | case stBlock: /* Either a lexical block, or some type */ | |
c5aa993b | 878 | if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc)) |
c906108c SS |
879 | goto case_stBlock_code; /* Lexical block */ |
880 | ||
881 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ | |
882 | ||
883 | /* Common code for handling struct, union, enum, and/or as-yet- | |
884 | unknown-type blocks of info about structured data. `type_code' | |
885 | has been set to the proper TYPE_CODE, if we know it. */ | |
886 | structured_common: | |
887 | found_ecoff_debugging_info = 1; | |
888 | push_parse_stack (); | |
889 | top_stack->blocktype = stBlock; | |
890 | ||
891 | /* First count the number of fields and the highest value. */ | |
892 | nfields = 0; | |
893 | max_value = 0; | |
894 | for (ext_tsym = ext_sh + external_sym_size; | |
895 | ; | |
896 | ext_tsym += external_sym_size) | |
897 | { | |
898 | SYMR tsym; | |
899 | ||
900 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
901 | ||
902 | switch (tsym.st) | |
903 | { | |
904 | case stEnd: | |
f0394be6 JB |
905 | /* C++ encodes class types as structures where there the |
906 | methods are encoded as stProc. The scope of stProc | |
907 | symbols also ends with stEnd, thus creating a risk of | |
908 | taking the wrong stEnd symbol record as the end of | |
909 | the current struct, which would cause GDB to undercount | |
910 | the real number of fields in this struct. To make sure | |
911 | we really reached the right stEnd symbol record, we | |
912 | check the associated name, and match it against the | |
913 | struct name. Since method names are mangled while | |
914 | the class name is not, there is no risk of having a | |
915 | method whose name is identical to the class name | |
916 | (in particular constructor method names are different | |
917 | from the class name). There is therefore no risk that | |
918 | this check stops the count on the StEnd of a method. */ | |
919 | if (strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss, | |
920 | name) == 0) | |
921 | goto end_of_fields; | |
922 | break; | |
c906108c SS |
923 | |
924 | case stMember: | |
925 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
926 | { |
927 | /* If the type of the member is Nil (or Void), | |
928 | without qualifiers, assume the tag is an | |
929 | enumeration. | |
930 | Alpha cc -migrate enums are recognized by a zero | |
931 | index and a zero symbol value. | |
932 | DU 4.0 cc enums are recognized by a member type of | |
933 | btEnum without qualifiers and a zero symbol value. */ | |
934 | if (tsym.index == indexNil | |
935 | || (tsym.index == 0 && sh->value == 0)) | |
936 | type_code = TYPE_CODE_ENUM; | |
937 | else | |
938 | { | |
939 | (*debug_swap->swap_tir_in) (bigend, | |
940 | &ax[tsym.index].a_ti, | |
941 | &tir); | |
942 | if ((tir.bt == btNil || tir.bt == btVoid | |
943 | || (tir.bt == btEnum && sh->value == 0)) | |
944 | && tir.tq0 == tqNil) | |
945 | type_code = TYPE_CODE_ENUM; | |
946 | } | |
947 | } | |
c906108c SS |
948 | nfields++; |
949 | if (tsym.value > max_value) | |
950 | max_value = tsym.value; | |
951 | break; | |
952 | ||
953 | case stBlock: | |
954 | case stUnion: | |
955 | case stEnum: | |
956 | case stStruct: | |
957 | { | |
958 | #if 0 | |
959 | /* This is a no-op; is it trying to tell us something | |
960 | we should be checking? */ | |
c5aa993b | 961 | if (tsym.sc == scVariant); /*UNIMPLEMENTED */ |
c906108c SS |
962 | #endif |
963 | if (tsym.index != 0) | |
964 | { | |
965 | /* This is something like a struct within a | |
c5aa993b JM |
966 | struct. Skip over the fields of the inner |
967 | struct. The -1 is because the for loop will | |
968 | increment ext_tsym. */ | |
c906108c SS |
969 | ext_tsym = ((char *) debug_info->external_sym |
970 | + ((cur_fdr->isymBase + tsym.index - 1) | |
971 | * external_sym_size)); | |
972 | } | |
973 | } | |
974 | break; | |
975 | ||
976 | case stTypedef: | |
977 | /* mips cc puts out a typedef for struct x if it is not yet | |
978 | defined when it encounters | |
979 | struct y { struct x *xp; }; | |
980 | Just ignore it. */ | |
981 | break; | |
982 | ||
983 | case stIndirect: | |
984 | /* Irix5 cc puts out a stIndirect for struct x if it is not | |
985 | yet defined when it encounters | |
986 | struct y { struct x *xp; }; | |
987 | Just ignore it. */ | |
988 | break; | |
989 | ||
990 | default: | |
23136709 KB |
991 | complaint (&symfile_complaints, |
992 | "declaration block contains unhandled symbol type %d", | |
993 | tsym.st); | |
c906108c SS |
994 | } |
995 | } | |
996 | end_of_fields:; | |
997 | ||
998 | /* In an stBlock, there is no way to distinguish structs, | |
999 | unions, and enums at this point. This is a bug in the | |
1000 | original design (that has been fixed with the recent | |
1001 | addition of the stStruct, stUnion, and stEnum symbol | |
1002 | types.) The way you can tell is if/when you see a variable | |
1003 | or field of that type. In that case the variable's type | |
1004 | (in the AUX table) says if the type is struct, union, or | |
1005 | enum, and points back to the stBlock here. So you can | |
1006 | patch the tag kind up later - but only if there actually is | |
1007 | a variable or field of that type. | |
1008 | ||
1009 | So until we know for sure, we will guess at this point. | |
1010 | The heuristic is: | |
1011 | If the first member has index==indexNil or a void type, | |
1012 | assume we have an enumeration. | |
1013 | Otherwise, if there is more than one member, and all | |
1014 | the members have offset 0, assume we have a union. | |
1015 | Otherwise, assume we have a struct. | |
1016 | ||
1017 | The heuristic could guess wrong in the case of of an | |
1018 | enumeration with no members or a union with one (or zero) | |
1019 | members, or when all except the last field of a struct have | |
1020 | width zero. These are uncommon and/or illegal situations, | |
1021 | and in any case guessing wrong probably doesn't matter | |
1022 | much. | |
1023 | ||
1024 | But if we later do find out we were wrong, we fixup the tag | |
1025 | kind. Members of an enumeration must be handled | |
1026 | differently from struct/union fields, and that is harder to | |
1027 | patch up, but luckily we shouldn't need to. (If there are | |
1028 | any enumeration members, we can tell for sure it's an enum | |
1029 | here.) */ | |
1030 | ||
1031 | if (type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
1032 | { |
1033 | if (nfields > 1 && max_value == 0) | |
1034 | type_code = TYPE_CODE_UNION; | |
1035 | else | |
1036 | type_code = TYPE_CODE_STRUCT; | |
1037 | } | |
c906108c SS |
1038 | |
1039 | /* Create a new type or use the pending type. */ | |
1040 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1041 | if (pend == (struct mdebug_pending *) NULL) | |
1042 | { | |
1043 | t = new_type (NULL); | |
1044 | add_pending (cur_fdr, ext_sh, t); | |
1045 | } | |
1046 | else | |
1047 | t = pend->t; | |
1048 | ||
1049 | /* Do not set the tag name if it is a compiler generated tag name | |
1050 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. | |
1051 | Alpha cc puts out an sh->iss of zero for those. */ | |
1052 | if (sh->iss == 0 || name[0] == '.' || name[0] == '\0') | |
1053 | TYPE_TAG_NAME (t) = NULL; | |
1054 | else | |
1055 | TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack, | |
1056 | "", "", name); | |
1057 | ||
1058 | TYPE_CODE (t) = type_code; | |
1059 | TYPE_LENGTH (t) = sh->value; | |
1060 | TYPE_NFIELDS (t) = nfields; | |
1061 | TYPE_FIELDS (t) = f = ((struct field *) | |
1062 | TYPE_ALLOC (t, | |
1063 | nfields * sizeof (struct field))); | |
1064 | ||
1065 | if (type_code == TYPE_CODE_ENUM) | |
1066 | { | |
1067 | int unsigned_enum = 1; | |
1068 | ||
1069 | /* This is a non-empty enum. */ | |
1070 | ||
1071 | /* DEC c89 has the number of enumerators in the sh.value field, | |
1072 | not the type length, so we have to compensate for that | |
1073 | incompatibility quirk. | |
1074 | This might do the wrong thing for an enum with one or two | |
1075 | enumerators and gcc -gcoff -fshort-enums, but these cases | |
1076 | are hopefully rare enough. | |
1077 | Alpha cc -migrate has a sh.value field of zero, we adjust | |
1078 | that too. */ | |
1079 | if (TYPE_LENGTH (t) == TYPE_NFIELDS (t) | |
1080 | || TYPE_LENGTH (t) == 0) | |
1081 | TYPE_LENGTH (t) = TARGET_INT_BIT / HOST_CHAR_BIT; | |
1082 | for (ext_tsym = ext_sh + external_sym_size; | |
1083 | ; | |
1084 | ext_tsym += external_sym_size) | |
1085 | { | |
1086 | SYMR tsym; | |
1087 | struct symbol *enum_sym; | |
1088 | ||
1089 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
1090 | ||
1091 | if (tsym.st != stMember) | |
1092 | break; | |
1093 | ||
1094 | FIELD_BITPOS (*f) = tsym.value; | |
1095 | FIELD_TYPE (*f) = t; | |
1096 | FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss; | |
1097 | FIELD_BITSIZE (*f) = 0; | |
01ad7f36 | 1098 | FIELD_STATIC_KIND (*f) = 0; |
c906108c SS |
1099 | |
1100 | enum_sym = ((struct symbol *) | |
1101 | obstack_alloc (¤t_objfile->symbol_obstack, | |
1102 | sizeof (struct symbol))); | |
12b9c64f | 1103 | memset (enum_sym, 0, sizeof (struct symbol)); |
c906108c SS |
1104 | SYMBOL_NAME (enum_sym) = |
1105 | obsavestring (f->name, strlen (f->name), | |
1106 | ¤t_objfile->symbol_obstack); | |
1107 | SYMBOL_CLASS (enum_sym) = LOC_CONST; | |
1108 | SYMBOL_TYPE (enum_sym) = t; | |
1109 | SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE; | |
1110 | SYMBOL_VALUE (enum_sym) = tsym.value; | |
1111 | if (SYMBOL_VALUE (enum_sym) < 0) | |
1112 | unsigned_enum = 0; | |
1113 | add_symbol (enum_sym, top_stack->cur_block); | |
1114 | ||
1115 | /* Skip the stMembers that we've handled. */ | |
1116 | count++; | |
1117 | f++; | |
1118 | } | |
1119 | if (unsigned_enum) | |
1120 | TYPE_FLAGS (t) |= TYPE_FLAG_UNSIGNED; | |
1121 | } | |
1122 | /* make this the current type */ | |
1123 | top_stack->cur_type = t; | |
1124 | top_stack->cur_field = 0; | |
1125 | ||
1126 | /* Do not create a symbol for alpha cc unnamed structs. */ | |
1127 | if (sh->iss == 0) | |
1128 | break; | |
1129 | ||
1130 | /* gcc puts out an empty struct for an opaque struct definitions, | |
1131 | do not create a symbol for it either. */ | |
1132 | if (TYPE_NFIELDS (t) == 0) | |
1133 | { | |
1134 | TYPE_FLAGS (t) |= TYPE_FLAG_STUB; | |
1135 | break; | |
1136 | } | |
1137 | ||
1138 | s = new_symbol (name); | |
1139 | SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE; | |
1140 | SYMBOL_CLASS (s) = LOC_TYPEDEF; | |
1141 | SYMBOL_VALUE (s) = 0; | |
1142 | SYMBOL_TYPE (s) = t; | |
1143 | add_symbol (s, top_stack->cur_block); | |
1144 | break; | |
1145 | ||
1146 | /* End of local variables shared by struct, union, enum, and | |
1147 | block (as yet unknown struct/union/enum) processing. */ | |
1148 | } | |
1149 | ||
1150 | case_stBlock_code: | |
1151 | found_ecoff_debugging_info = 1; | |
1152 | /* beginnning of (code) block. Value of symbol | |
c5aa993b | 1153 | is the displacement from procedure start */ |
c906108c SS |
1154 | push_parse_stack (); |
1155 | ||
1156 | /* Do not start a new block if this is the outermost block of a | |
c5aa993b JM |
1157 | procedure. This allows the LOC_BLOCK symbol to point to the |
1158 | block with the local variables, so funcname::var works. */ | |
c906108c SS |
1159 | if (top_stack->blocktype == stProc |
1160 | || top_stack->blocktype == stStaticProc) | |
1161 | { | |
1162 | top_stack->blocktype = stNil; | |
1163 | break; | |
1164 | } | |
1165 | ||
1166 | top_stack->blocktype = stBlock; | |
1167 | b = new_block (top_stack->maxsyms); | |
1168 | BLOCK_START (b) = sh->value + top_stack->procadr; | |
1169 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1170 | top_stack->cur_block = b; | |
1171 | add_block (b, top_stack->cur_st); | |
1172 | break; | |
1173 | ||
1174 | case stEnd: /* end (of anything) */ | |
c5aa993b | 1175 | if (sh->sc == scInfo || SC_IS_COMMON (sh->sc)) |
c906108c SS |
1176 | { |
1177 | /* Finished with type */ | |
1178 | top_stack->cur_type = 0; | |
1179 | } | |
1180 | else if (sh->sc == scText && | |
1181 | (top_stack->blocktype == stProc || | |
1182 | top_stack->blocktype == stStaticProc)) | |
1183 | { | |
1184 | /* Finished with procedure */ | |
1185 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
1186 | struct mips_extra_func_info *e; | |
1187 | struct block *b; | |
1188 | struct type *ftype = top_stack->cur_type; | |
1189 | int i; | |
1190 | ||
1191 | BLOCK_END (top_stack->cur_block) += sh->value; /* size */ | |
1192 | ||
1193 | /* Make up special symbol to contain procedure specific info */ | |
1194 | s = new_symbol (MIPS_EFI_SYMBOL_NAME); | |
1195 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; | |
1196 | SYMBOL_CLASS (s) = LOC_CONST; | |
1197 | SYMBOL_TYPE (s) = mdebug_type_void; | |
1198 | e = ((struct mips_extra_func_info *) | |
1199 | obstack_alloc (¤t_objfile->symbol_obstack, | |
1200 | sizeof (struct mips_extra_func_info))); | |
12b9c64f | 1201 | memset (e, 0, sizeof (struct mips_extra_func_info)); |
c906108c SS |
1202 | SYMBOL_VALUE (s) = (long) e; |
1203 | e->numargs = top_stack->numargs; | |
1204 | e->pdr.framereg = -1; | |
1205 | add_symbol (s, top_stack->cur_block); | |
1206 | ||
1207 | /* Reallocate symbols, saving memory */ | |
1208 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); | |
1209 | ||
1210 | /* f77 emits proc-level with address bounds==[0,0], | |
1211 | So look for such child blocks, and patch them. */ | |
1212 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
1213 | { | |
1214 | struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i); | |
1215 | if (BLOCK_SUPERBLOCK (b_bad) == b | |
1216 | && BLOCK_START (b_bad) == top_stack->procadr | |
1217 | && BLOCK_END (b_bad) == top_stack->procadr) | |
1218 | { | |
1219 | BLOCK_START (b_bad) = BLOCK_START (b); | |
1220 | BLOCK_END (b_bad) = BLOCK_END (b); | |
1221 | } | |
1222 | } | |
1223 | ||
1224 | if (TYPE_NFIELDS (ftype) <= 0) | |
1225 | { | |
1226 | /* No parameter type information is recorded with the function's | |
c5aa993b | 1227 | type. Set that from the type of the parameter symbols. */ |
c906108c SS |
1228 | int nparams = top_stack->numargs; |
1229 | int iparams; | |
1230 | struct symbol *sym; | |
1231 | ||
1232 | if (nparams > 0) | |
1233 | { | |
1234 | TYPE_NFIELDS (ftype) = nparams; | |
1235 | TYPE_FIELDS (ftype) = (struct field *) | |
1236 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
c5aa993b | 1237 | |
c906108c SS |
1238 | for (i = iparams = 0; iparams < nparams; i++) |
1239 | { | |
1240 | sym = BLOCK_SYM (b, i); | |
1241 | switch (SYMBOL_CLASS (sym)) | |
1242 | { | |
1243 | case LOC_ARG: | |
1244 | case LOC_REF_ARG: | |
1245 | case LOC_REGPARM: | |
1246 | case LOC_REGPARM_ADDR: | |
1247 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); | |
8176bb6d | 1248 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c SS |
1249 | iparams++; |
1250 | break; | |
1251 | default: | |
1252 | break; | |
1253 | } | |
1254 | } | |
1255 | } | |
1256 | } | |
1257 | } | |
1258 | else if (sh->sc == scText && top_stack->blocktype == stBlock) | |
1259 | { | |
1260 | /* End of (code) block. The value of the symbol is the | |
1261 | displacement from the procedure`s start address of the | |
1262 | end of this block. */ | |
1263 | BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr; | |
1264 | shrink_block (top_stack->cur_block, top_stack->cur_st); | |
1265 | } | |
1266 | else if (sh->sc == scText && top_stack->blocktype == stNil) | |
1267 | { | |
1268 | /* End of outermost block. Pop parse stack and ignore. The | |
1269 | following stEnd of stProc will take care of the block. */ | |
1270 | ; | |
1271 | } | |
1272 | else if (sh->sc == scText && top_stack->blocktype == stFile) | |
1273 | { | |
1274 | /* End of file. Pop parse stack and ignore. Higher | |
1275 | level code deals with this. */ | |
1276 | ; | |
1277 | } | |
1278 | else | |
23136709 KB |
1279 | complaint (&symfile_complaints, |
1280 | "stEnd with storage class %d not handled", sh->sc); | |
c906108c SS |
1281 | |
1282 | pop_parse_stack (); /* restore previous lexical context */ | |
1283 | break; | |
1284 | ||
1285 | case stMember: /* member of struct or union */ | |
1286 | f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++]; | |
1287 | FIELD_NAME (*f) = name; | |
1288 | FIELD_BITPOS (*f) = sh->value; | |
1289 | bitsize = 0; | |
1290 | FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name); | |
1291 | FIELD_BITSIZE (*f) = bitsize; | |
01ad7f36 | 1292 | FIELD_STATIC_KIND (*f) = 0; |
c906108c SS |
1293 | break; |
1294 | ||
1295 | case stIndirect: /* forward declaration on Irix5 */ | |
1296 | /* Forward declarations from Irix5 cc are handled by cross_ref, | |
c5aa993b | 1297 | skip them. */ |
c906108c SS |
1298 | break; |
1299 | ||
1300 | case stTypedef: /* type definition */ | |
1301 | found_ecoff_debugging_info = 1; | |
1302 | ||
1303 | /* Typedefs for forward declarations and opaque structs from alpha cc | |
c5aa993b | 1304 | are handled by cross_ref, skip them. */ |
c906108c SS |
1305 | if (sh->iss == 0) |
1306 | break; | |
1307 | ||
1308 | /* Parse the type or use the pending type. */ | |
1309 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1310 | if (pend == (struct mdebug_pending *) NULL) | |
1311 | { | |
c5aa993b | 1312 | t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name); |
c906108c SS |
1313 | add_pending (cur_fdr, ext_sh, t); |
1314 | } | |
1315 | else | |
1316 | t = pend->t; | |
1317 | ||
1318 | /* mips cc puts out a typedef with the name of the struct for forward | |
c5aa993b JM |
1319 | declarations. These should not go into the symbol table and |
1320 | TYPE_NAME should not be set for them. | |
1321 | They can't be distinguished from an intentional typedef to | |
1322 | the same name however: | |
1323 | x.h: | |
1324 | struct x { int ix; int jx; }; | |
1325 | struct xx; | |
1326 | x.c: | |
1327 | typedef struct x x; | |
1328 | struct xx {int ixx; int jxx; }; | |
1329 | generates a cross referencing stTypedef for x and xx. | |
1330 | The user visible effect of this is that the type of a pointer | |
1331 | to struct foo sometimes is given as `foo *' instead of `struct foo *'. | |
1332 | The problem is fixed with alpha cc and Irix5 cc. */ | |
c906108c SS |
1333 | |
1334 | /* However if the typedef cross references to an opaque aggregate, it | |
c5aa993b | 1335 | is safe to omit it from the symbol table. */ |
c906108c SS |
1336 | |
1337 | if (has_opaque_xref (cur_fdr, sh)) | |
1338 | break; | |
1339 | s = new_symbol (name); | |
1340 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
1341 | SYMBOL_CLASS (s) = LOC_TYPEDEF; | |
1342 | SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block; | |
1343 | SYMBOL_TYPE (s) = t; | |
1344 | add_symbol (s, top_stack->cur_block); | |
1345 | ||
1346 | /* Incomplete definitions of structs should not get a name. */ | |
1347 | if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL | |
1348 | && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0 | |
c5aa993b | 1349 | || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT |
c906108c SS |
1350 | && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION))) |
1351 | { | |
1352 | if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR | |
1353 | || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC) | |
1354 | { | |
1355 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1356 | foo" or "function returning foo", we better not set |
1357 | the TYPE_NAME. If the program contains "typedef char | |
1358 | *caddr_t;", we don't want all variables of type char | |
1359 | * to print as caddr_t. This is not just a | |
1360 | consequence of GDB's type management; CC and GCC (at | |
1361 | least through version 2.4) both output variables of | |
1362 | either type char * or caddr_t with the type | |
1363 | refering to the stTypedef symbol for caddr_t. If a future | |
1364 | compiler cleans this up it GDB is not ready for it | |
1365 | yet, but if it becomes ready we somehow need to | |
1366 | disable this check (without breaking the PCC/GCC2.4 | |
1367 | case). | |
1368 | ||
1369 | Sigh. | |
1370 | ||
1371 | Fortunately, this check seems not to be necessary | |
1372 | for anything except pointers or functions. */ | |
c906108c SS |
1373 | } |
1374 | else | |
1375 | TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s); | |
1376 | } | |
1377 | break; | |
1378 | ||
1379 | case stFile: /* file name */ | |
1380 | push_parse_stack (); | |
1381 | top_stack->blocktype = sh->st; | |
1382 | break; | |
1383 | ||
1384 | /* I`ve never seen these for C */ | |
1385 | case stRegReloc: | |
1386 | break; /* register relocation */ | |
1387 | case stForward: | |
1388 | break; /* forwarding address */ | |
1389 | case stConstant: | |
1390 | break; /* constant */ | |
1391 | default: | |
23136709 | 1392 | complaint (&symfile_complaints, "unknown symbol type 0x%x", sh->st); |
c906108c SS |
1393 | break; |
1394 | } | |
1395 | ||
1396 | return count; | |
1397 | } | |
1398 | ||
1399 | /* Parse the type information provided in the raw AX entries for | |
1400 | the symbol SH. Return the bitfield size in BS, in case. | |
1401 | We must byte-swap the AX entries before we use them; BIGEND says whether | |
1402 | they are big-endian or little-endian (from fh->fBigendian). */ | |
1403 | ||
1404 | static struct type * | |
fba45db2 KB |
1405 | parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs, |
1406 | int bigend, char *sym_name) | |
c906108c SS |
1407 | { |
1408 | /* Null entries in this map are treated specially */ | |
1409 | static struct type **map_bt[] = | |
1410 | { | |
c5aa993b JM |
1411 | &mdebug_type_void, /* btNil */ |
1412 | &mdebug_type_adr_32, /* btAdr */ | |
1413 | &mdebug_type_char, /* btChar */ | |
1414 | &mdebug_type_unsigned_char, /* btUChar */ | |
1415 | &mdebug_type_short, /* btShort */ | |
c906108c | 1416 | &mdebug_type_unsigned_short, /* btUShort */ |
c5aa993b | 1417 | &mdebug_type_int_32, /* btInt */ |
c906108c | 1418 | &mdebug_type_unsigned_int_32, /* btUInt */ |
c5aa993b | 1419 | &mdebug_type_long_32, /* btLong */ |
c906108c | 1420 | &mdebug_type_unsigned_long_32, /* btULong */ |
c5aa993b JM |
1421 | &mdebug_type_float, /* btFloat */ |
1422 | &mdebug_type_double, /* btDouble */ | |
1423 | 0, /* btStruct */ | |
1424 | 0, /* btUnion */ | |
1425 | 0, /* btEnum */ | |
1426 | 0, /* btTypedef */ | |
1427 | 0, /* btRange */ | |
1428 | 0, /* btSet */ | |
1429 | &mdebug_type_complex, /* btComplex */ | |
c906108c | 1430 | &mdebug_type_double_complex, /* btDComplex */ |
c5aa993b JM |
1431 | 0, /* btIndirect */ |
1432 | &mdebug_type_fixed_dec, /* btFixedDec */ | |
1433 | &mdebug_type_float_dec, /* btFloatDec */ | |
1434 | &mdebug_type_string, /* btString */ | |
1435 | 0, /* btBit */ | |
1436 | 0, /* btPicture */ | |
1437 | &mdebug_type_void, /* btVoid */ | |
1438 | 0, /* DEC C++: Pointer to member */ | |
1439 | 0, /* DEC C++: Virtual function table */ | |
1440 | 0, /* DEC C++: Class (Record) */ | |
1441 | &mdebug_type_long_64, /* btLong64 */ | |
c906108c | 1442 | &mdebug_type_unsigned_long_64, /* btULong64 */ |
c5aa993b JM |
1443 | &mdebug_type_long_long_64, /* btLongLong64 */ |
1444 | &mdebug_type_unsigned_long_long_64, /* btULongLong64 */ | |
1445 | &mdebug_type_adr_64, /* btAdr64 */ | |
1446 | &mdebug_type_int_64, /* btInt64 */ | |
c906108c SS |
1447 | &mdebug_type_unsigned_int_64, /* btUInt64 */ |
1448 | }; | |
1449 | ||
1450 | TIR t[1]; | |
1451 | struct type *tp = 0; | |
1452 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1453 | ||
1454 | /* Handle undefined types, they have indexNil. */ | |
1455 | if (aux_index == indexNil) | |
1456 | return mdebug_type_int; | |
1457 | ||
1458 | /* Handle corrupt aux indices. */ | |
1459 | if (aux_index >= (debug_info->fdr + fd)->caux) | |
1460 | { | |
23136709 | 1461 | index_complaint (sym_name); |
c906108c SS |
1462 | return mdebug_type_int; |
1463 | } | |
1464 | ax += aux_index; | |
1465 | ||
1466 | /* Use aux as a type information record, map its basic type. */ | |
1467 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1468 | if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt))) | |
1469 | { | |
23136709 | 1470 | basic_type_complaint (t->bt, sym_name); |
c906108c SS |
1471 | return mdebug_type_int; |
1472 | } | |
1473 | if (map_bt[t->bt]) | |
1474 | { | |
1475 | tp = *map_bt[t->bt]; | |
1476 | } | |
1477 | else | |
1478 | { | |
1479 | tp = NULL; | |
1480 | /* Cannot use builtin types -- build our own */ | |
1481 | switch (t->bt) | |
1482 | { | |
1483 | case btStruct: | |
1484 | type_code = TYPE_CODE_STRUCT; | |
1485 | break; | |
1486 | case btUnion: | |
1487 | type_code = TYPE_CODE_UNION; | |
1488 | break; | |
1489 | case btEnum: | |
1490 | type_code = TYPE_CODE_ENUM; | |
1491 | break; | |
1492 | case btRange: | |
1493 | type_code = TYPE_CODE_RANGE; | |
1494 | break; | |
1495 | case btSet: | |
1496 | type_code = TYPE_CODE_SET; | |
1497 | break; | |
1498 | case btIndirect: | |
1499 | /* alpha cc -migrate uses this for typedefs. The true type will | |
1500 | be obtained by crossreferencing below. */ | |
1501 | type_code = TYPE_CODE_ERROR; | |
1502 | break; | |
1503 | case btTypedef: | |
1504 | /* alpha cc uses this for typedefs. The true type will be | |
1505 | obtained by crossreferencing below. */ | |
1506 | type_code = TYPE_CODE_ERROR; | |
1507 | break; | |
1508 | default: | |
23136709 | 1509 | basic_type_complaint (t->bt, sym_name); |
c906108c SS |
1510 | return mdebug_type_int; |
1511 | } | |
1512 | } | |
1513 | ||
1514 | /* Move on to next aux */ | |
1515 | ax++; | |
1516 | ||
1517 | if (t->fBitfield) | |
1518 | { | |
1519 | int width = AUX_GET_WIDTH (bigend, ax); | |
25caa7a8 EZ |
1520 | #if 0 /* OBSOLETE CFront */ |
1521 | // OBSOLETE /* Inhibit core dumps with some cfront generated objects that | |
1522 | // OBSOLETE corrupt the TIR. */ | |
1523 | #endif /* OBSOLETE CFront */ | |
1524 | /* Inhibit core dumps if TIR is corrupted. */ | |
c5aa993b | 1525 | if (bs == (int *) NULL) |
c906108c SS |
1526 | { |
1527 | /* Alpha cc -migrate encodes char and unsigned char types | |
1528 | as short and unsigned short types with a field width of 8. | |
1529 | Enum types also have a field width which we ignore for now. */ | |
1530 | if (t->bt == btShort && width == 8) | |
1531 | tp = mdebug_type_char; | |
1532 | else if (t->bt == btUShort && width == 8) | |
1533 | tp = mdebug_type_unsigned_char; | |
1534 | else if (t->bt == btEnum) | |
1535 | ; | |
1536 | else | |
23136709 KB |
1537 | complaint (&symfile_complaints, "can't handle TIR fBitfield for %s", |
1538 | sym_name); | |
c906108c SS |
1539 | } |
1540 | else | |
c5aa993b | 1541 | *bs = width; |
c906108c SS |
1542 | ax++; |
1543 | } | |
1544 | ||
1545 | /* A btIndirect entry cross references to an aux entry containing | |
1546 | the type. */ | |
1547 | if (t->bt == btIndirect) | |
1548 | { | |
1549 | RNDXR rn[1]; | |
1550 | int rf; | |
1551 | FDR *xref_fh; | |
1552 | int xref_fd; | |
1553 | ||
1554 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
1555 | ax++; | |
1556 | if (rn->rfd == 0xfff) | |
1557 | { | |
1558 | rf = AUX_GET_ISYM (bigend, ax); | |
1559 | ax++; | |
1560 | } | |
1561 | else | |
1562 | rf = rn->rfd; | |
1563 | ||
1564 | if (rf == -1) | |
1565 | { | |
23136709 KB |
1566 | complaint (&symfile_complaints, |
1567 | "unable to cross ref btIndirect for %s", sym_name); | |
c906108c SS |
1568 | return mdebug_type_int; |
1569 | } | |
1570 | xref_fh = get_rfd (fd, rf); | |
1571 | xref_fd = xref_fh - debug_info->fdr; | |
1572 | tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase, | |
c5aa993b | 1573 | rn->index, (int *) NULL, xref_fh->fBigendian, sym_name); |
c906108c SS |
1574 | } |
1575 | ||
1576 | /* All these types really point to some (common) MIPS type | |
1577 | definition, and only the type-qualifiers fully identify | |
1578 | them. We'll make the same effort at sharing. */ | |
1579 | if (t->bt == btStruct || | |
1580 | t->bt == btUnion || | |
1581 | t->bt == btEnum || | |
1582 | ||
c5aa993b JM |
1583 | /* btSet (I think) implies that the name is a tag name, not a typedef |
1584 | name. This apparently is a MIPS extension for C sets. */ | |
c906108c SS |
1585 | t->bt == btSet) |
1586 | { | |
1587 | char *name; | |
1588 | ||
1589 | /* Try to cross reference this type, build new type on failure. */ | |
1590 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1591 | if (tp == (struct type *) NULL) | |
1592 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
1593 | ||
1594 | /* DEC c89 produces cross references to qualified aggregate types, | |
c5aa993b | 1595 | dereference them. */ |
c906108c SS |
1596 | while (TYPE_CODE (tp) == TYPE_CODE_PTR |
1597 | || TYPE_CODE (tp) == TYPE_CODE_ARRAY) | |
0004e5a2 | 1598 | tp = TYPE_TARGET_TYPE (tp); |
c906108c SS |
1599 | |
1600 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1601 | Any type may be returned from cross_ref if file indirect entries |
1602 | are corrupted. */ | |
c906108c SS |
1603 | if (TYPE_CODE (tp) != TYPE_CODE_STRUCT |
1604 | && TYPE_CODE (tp) != TYPE_CODE_UNION | |
1605 | && TYPE_CODE (tp) != TYPE_CODE_ENUM) | |
1606 | { | |
23136709 | 1607 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1608 | } |
1609 | else | |
1610 | { | |
1611 | ||
1612 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
1613 | exception is if we guessed wrong re struct/union/enum. | |
1614 | But for struct vs. union a wrong guess is harmless, so | |
1615 | don't complain(). */ | |
1616 | if ((TYPE_CODE (tp) == TYPE_CODE_ENUM | |
1617 | && type_code != TYPE_CODE_ENUM) | |
1618 | || (TYPE_CODE (tp) != TYPE_CODE_ENUM | |
1619 | && type_code == TYPE_CODE_ENUM)) | |
1620 | { | |
23136709 | 1621 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1622 | } |
1623 | ||
1624 | if (TYPE_CODE (tp) != type_code) | |
1625 | { | |
1626 | TYPE_CODE (tp) = type_code; | |
1627 | } | |
1628 | ||
1629 | /* Do not set the tag name if it is a compiler generated tag name | |
c5aa993b | 1630 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ |
c906108c SS |
1631 | if (name[0] == '.' || name[0] == '\0') |
1632 | TYPE_TAG_NAME (tp) = NULL; | |
1633 | else if (TYPE_TAG_NAME (tp) == NULL | |
1634 | || !STREQ (TYPE_TAG_NAME (tp), name)) | |
1635 | TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name), | |
c5aa993b | 1636 | ¤t_objfile->type_obstack); |
c906108c SS |
1637 | } |
1638 | } | |
1639 | ||
1640 | /* All these types really point to some (common) MIPS type | |
1641 | definition, and only the type-qualifiers fully identify | |
1642 | them. We'll make the same effort at sharing. | |
1643 | FIXME: We are not doing any guessing on range types. */ | |
1644 | if (t->bt == btRange) | |
1645 | { | |
1646 | char *name; | |
1647 | ||
1648 | /* Try to cross reference this type, build new type on failure. */ | |
1649 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1650 | if (tp == (struct type *) NULL) | |
1651 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
1652 | ||
1653 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1654 | Any type may be returned from cross_ref if file indirect entries |
1655 | are corrupted. */ | |
c906108c SS |
1656 | if (TYPE_CODE (tp) != TYPE_CODE_RANGE) |
1657 | { | |
23136709 | 1658 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1659 | } |
1660 | else | |
1661 | { | |
1662 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
1663 | exception is if we guessed wrong re struct/union/enum. */ | |
1664 | if (TYPE_CODE (tp) != type_code) | |
1665 | { | |
23136709 | 1666 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1667 | TYPE_CODE (tp) = type_code; |
1668 | } | |
1669 | if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name)) | |
1670 | TYPE_NAME (tp) = obsavestring (name, strlen (name), | |
1671 | ¤t_objfile->type_obstack); | |
1672 | } | |
1673 | } | |
1674 | if (t->bt == btTypedef) | |
1675 | { | |
1676 | char *name; | |
1677 | ||
1678 | /* Try to cross reference this type, it should succeed. */ | |
1679 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1680 | if (tp == (struct type *) NULL) | |
1681 | { | |
23136709 KB |
1682 | complaint (&symfile_complaints, |
1683 | "unable to cross ref btTypedef for %s", sym_name); | |
c906108c SS |
1684 | tp = mdebug_type_int; |
1685 | } | |
1686 | } | |
1687 | ||
1688 | /* Deal with range types */ | |
1689 | if (t->bt == btRange) | |
1690 | { | |
1691 | TYPE_NFIELDS (tp) = 2; | |
1692 | TYPE_FIELDS (tp) = ((struct field *) | |
1693 | TYPE_ALLOC (tp, 2 * sizeof (struct field))); | |
1694 | TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"), | |
c5aa993b | 1695 | ¤t_objfile->type_obstack); |
c906108c SS |
1696 | TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax); |
1697 | ax++; | |
1698 | TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"), | |
c5aa993b | 1699 | ¤t_objfile->type_obstack); |
c906108c SS |
1700 | TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax); |
1701 | ax++; | |
1702 | } | |
1703 | ||
1704 | /* Parse all the type qualifiers now. If there are more | |
1705 | than 6 the game will continue in the next aux */ | |
1706 | ||
1707 | while (1) | |
1708 | { | |
1709 | #define PARSE_TQ(tq) \ | |
1710 | if (t->tq != tqNil) \ | |
1711 | ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \ | |
1712 | else \ | |
1713 | break; | |
1714 | ||
1715 | PARSE_TQ (tq0); | |
1716 | PARSE_TQ (tq1); | |
1717 | PARSE_TQ (tq2); | |
1718 | PARSE_TQ (tq3); | |
1719 | PARSE_TQ (tq4); | |
1720 | PARSE_TQ (tq5); | |
1721 | #undef PARSE_TQ | |
1722 | ||
1723 | /* mips cc 2.x and gcc never put out continued aux entries. */ | |
1724 | if (!t->continued) | |
1725 | break; | |
1726 | ||
1727 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1728 | ax++; | |
1729 | } | |
1730 | ||
1731 | /* Complain for illegal continuations due to corrupt aux entries. */ | |
1732 | if (t->continued) | |
23136709 | 1733 | complaint (&symfile_complaints, "illegal TIR continued for %s", sym_name); |
c5aa993b | 1734 | |
c906108c SS |
1735 | return tp; |
1736 | } | |
1737 | ||
1738 | /* Make up a complex type from a basic one. Type is passed by | |
1739 | reference in TPP and side-effected as necessary. The type | |
1740 | qualifier TQ says how to handle the aux symbols at AX for | |
1741 | the symbol SX we are currently analyzing. BIGEND says whether | |
1742 | aux symbols are big-endian or little-endian. | |
1743 | Returns the number of aux symbols we parsed. */ | |
1744 | ||
1745 | static int | |
fba45db2 KB |
1746 | upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend, |
1747 | char *sym_name) | |
c906108c SS |
1748 | { |
1749 | int off; | |
1750 | struct type *t; | |
1751 | ||
1752 | /* Used in array processing */ | |
1753 | int rf, id; | |
1754 | FDR *fh; | |
1755 | struct type *range; | |
1756 | struct type *indx; | |
1757 | int lower, upper; | |
1758 | RNDXR rndx; | |
1759 | ||
1760 | switch (tq) | |
1761 | { | |
1762 | case tqPtr: | |
1763 | t = lookup_pointer_type (*tpp); | |
1764 | *tpp = t; | |
1765 | return 0; | |
1766 | ||
1767 | case tqProc: | |
1768 | t = lookup_function_type (*tpp); | |
1769 | *tpp = t; | |
1770 | return 0; | |
1771 | ||
1772 | case tqArray: | |
1773 | off = 0; | |
1774 | ||
1775 | /* Determine and record the domain type (type of index) */ | |
1776 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx); | |
1777 | id = rndx.index; | |
1778 | rf = rndx.rfd; | |
1779 | if (rf == 0xfff) | |
1780 | { | |
1781 | ax++; | |
1782 | rf = AUX_GET_ISYM (bigend, ax); | |
1783 | off++; | |
1784 | } | |
1785 | fh = get_rfd (fd, rf); | |
1786 | ||
1787 | indx = parse_type (fh - debug_info->fdr, | |
1788 | debug_info->external_aux + fh->iauxBase, | |
1789 | id, (int *) NULL, bigend, sym_name); | |
1790 | ||
1791 | /* The bounds type should be an integer type, but might be anything | |
c5aa993b | 1792 | else due to corrupt aux entries. */ |
c906108c SS |
1793 | if (TYPE_CODE (indx) != TYPE_CODE_INT) |
1794 | { | |
23136709 KB |
1795 | complaint (&symfile_complaints, |
1796 | "illegal array index type for %s, assuming int", sym_name); | |
c906108c SS |
1797 | indx = mdebug_type_int; |
1798 | } | |
1799 | ||
1800 | /* Get the bounds, and create the array type. */ | |
1801 | ax++; | |
1802 | lower = AUX_GET_DNLOW (bigend, ax); | |
1803 | ax++; | |
1804 | upper = AUX_GET_DNHIGH (bigend, ax); | |
1805 | ax++; | |
1806 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ | |
1807 | ||
1808 | range = create_range_type ((struct type *) NULL, indx, | |
1809 | lower, upper); | |
1810 | ||
1811 | t = create_array_type ((struct type *) NULL, *tpp, range); | |
1812 | ||
1813 | /* We used to fill in the supplied array element bitsize | |
c5aa993b JM |
1814 | here if the TYPE_LENGTH of the target type was zero. |
1815 | This happens for a `pointer to an array of anonymous structs', | |
1816 | but in this case the array element bitsize is also zero, | |
1817 | so nothing is gained. | |
1818 | And we used to check the TYPE_LENGTH of the target type against | |
1819 | the supplied array element bitsize. | |
1820 | gcc causes a mismatch for `pointer to array of object', | |
1821 | since the sdb directives it uses do not have a way of | |
1822 | specifying the bitsize, but it does no harm (the | |
1823 | TYPE_LENGTH should be correct) and we should be able to | |
1824 | ignore the erroneous bitsize from the auxiliary entry safely. | |
1825 | dbx seems to ignore it too. */ | |
c906108c SS |
1826 | |
1827 | /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH | |
c5aa993b | 1828 | problem. */ |
c906108c SS |
1829 | if (TYPE_LENGTH (*tpp) == 0) |
1830 | { | |
1831 | TYPE_FLAGS (t) |= TYPE_FLAG_TARGET_STUB; | |
1832 | } | |
1833 | ||
1834 | *tpp = t; | |
1835 | return 4 + off; | |
1836 | ||
1837 | case tqVol: | |
1838 | /* Volatile -- currently ignored */ | |
1839 | return 0; | |
1840 | ||
1841 | case tqConst: | |
1842 | /* Const -- currently ignored */ | |
1843 | return 0; | |
1844 | ||
1845 | default: | |
23136709 | 1846 | complaint (&symfile_complaints, "unknown type qualifier 0x%x", tq); |
c906108c SS |
1847 | return 0; |
1848 | } | |
1849 | } | |
1850 | ||
1851 | ||
1852 | /* Parse a procedure descriptor record PR. Note that the procedure is | |
1853 | parsed _after_ the local symbols, now we just insert the extra | |
1854 | information we need into a MIPS_EFI_SYMBOL_NAME symbol that has | |
1855 | already been placed in the procedure's main block. Note also that | |
1856 | images that have been partially stripped (ld -x) have been deprived | |
1857 | of local symbols, and we have to cope with them here. FIRST_OFF is | |
1858 | the offset of the first procedure for this FDR; we adjust the | |
1859 | address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab | |
1860 | to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol | |
1861 | in question, or NULL to use top_stack->cur_block. */ | |
1862 | ||
a14ed312 | 1863 | static void parse_procedure (PDR *, struct symtab *, struct partial_symtab *); |
c906108c SS |
1864 | |
1865 | static void | |
fba45db2 KB |
1866 | parse_procedure (PDR *pr, struct symtab *search_symtab, |
1867 | struct partial_symtab *pst) | |
c906108c SS |
1868 | { |
1869 | struct symbol *s, *i; | |
1870 | struct block *b; | |
1871 | struct mips_extra_func_info *e; | |
1872 | char *sh_name; | |
1873 | ||
1874 | /* Simple rule to find files linked "-x" */ | |
1875 | if (cur_fdr->rss == -1) | |
1876 | { | |
1877 | if (pr->isym == -1) | |
1878 | { | |
1879 | /* Static procedure at address pr->adr. Sigh. */ | |
1880 | /* FIXME-32x64. assuming pr->adr fits in long. */ | |
23136709 KB |
1881 | complaint (&symfile_complaints, |
1882 | "can't handle PDR for static proc at 0x%lx", | |
1883 | (unsigned long) pr->adr); | |
c906108c SS |
1884 | return; |
1885 | } | |
1886 | else | |
1887 | { | |
1888 | /* external */ | |
1889 | EXTR she; | |
c5aa993b | 1890 | |
c906108c SS |
1891 | (*debug_swap->swap_ext_in) (cur_bfd, |
1892 | ((char *) debug_info->external_ext | |
1893 | + (pr->isym | |
1894 | * debug_swap->external_ext_size)), | |
1895 | &she); | |
1896 | sh_name = debug_info->ssext + she.asym.iss; | |
1897 | } | |
1898 | } | |
1899 | else | |
1900 | { | |
1901 | /* Full symbols */ | |
1902 | SYMR sh; | |
1903 | ||
1904 | (*debug_swap->swap_sym_in) (cur_bfd, | |
1905 | ((char *) debug_info->external_sym | |
1906 | + ((cur_fdr->isymBase + pr->isym) | |
1907 | * debug_swap->external_sym_size)), | |
1908 | &sh); | |
1909 | sh_name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
1910 | } | |
1911 | ||
1912 | if (search_symtab != NULL) | |
1913 | { | |
1914 | #if 0 | |
1915 | /* This loses both in the case mentioned (want a static, find a global), | |
c5aa993b JM |
1916 | but also if we are looking up a non-mangled name which happens to |
1917 | match the name of a mangled function. */ | |
c906108c | 1918 | /* We have to save the cur_fdr across the call to lookup_symbol. |
c5aa993b JM |
1919 | If the pdr is for a static function and if a global function with |
1920 | the same name exists, lookup_symbol will eventually read in the symtab | |
1921 | for the global function and clobber cur_fdr. */ | |
c906108c SS |
1922 | FDR *save_cur_fdr = cur_fdr; |
1923 | s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL); | |
1924 | cur_fdr = save_cur_fdr; | |
1925 | #else | |
1926 | s = mylookup_symbol | |
1927 | (sh_name, | |
1928 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK), | |
1929 | VAR_NAMESPACE, | |
1930 | LOC_BLOCK); | |
1931 | #endif | |
1932 | } | |
1933 | else | |
1934 | s = mylookup_symbol (sh_name, top_stack->cur_block, | |
1935 | VAR_NAMESPACE, LOC_BLOCK); | |
1936 | ||
1937 | if (s != 0) | |
1938 | { | |
1939 | b = SYMBOL_BLOCK_VALUE (s); | |
1940 | } | |
1941 | else | |
1942 | { | |
23136709 | 1943 | complaint (&symfile_complaints, "PDR for %s, but no symbol", sh_name); |
c906108c SS |
1944 | #if 1 |
1945 | return; | |
1946 | #else | |
1947 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ | |
1948 | s = new_symbol (sh_name); | |
1949 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
1950 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
1951 | /* Donno its type, hope int is ok */ | |
1952 | SYMBOL_TYPE (s) = lookup_function_type (mdebug_type_int); | |
1953 | add_symbol (s, top_stack->cur_block); | |
1954 | /* Wont have symbols for this one */ | |
1955 | b = new_block (2); | |
1956 | SYMBOL_BLOCK_VALUE (s) = b; | |
1957 | BLOCK_FUNCTION (b) = s; | |
1958 | BLOCK_START (b) = pr->adr; | |
1959 | /* BOUND used to be the end of procedure's text, but the | |
c5aa993b | 1960 | argument is no longer passed in. */ |
c906108c SS |
1961 | BLOCK_END (b) = bound; |
1962 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1963 | add_block (b, top_stack->cur_st); | |
1964 | #endif | |
1965 | } | |
1966 | ||
1967 | i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST); | |
1968 | ||
1969 | if (i) | |
1970 | { | |
1971 | e = (struct mips_extra_func_info *) SYMBOL_VALUE (i); | |
1972 | e->pdr = *pr; | |
1973 | e->pdr.isym = (long) s; | |
1974 | ||
1975 | /* GDB expects the absolute function start address for the | |
c5aa993b JM |
1976 | procedure descriptor in e->pdr.adr. |
1977 | As the address in the procedure descriptor is usually relative, | |
1978 | we would have to relocate e->pdr.adr with cur_fdr->adr and | |
b8fbeb18 | 1979 | ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)). |
c5aa993b JM |
1980 | Unfortunately cur_fdr->adr and e->pdr.adr are both absolute |
1981 | in shared libraries on some systems, and on other systems | |
1982 | e->pdr.adr is sometimes offset by a bogus value. | |
1983 | To work around these problems, we replace e->pdr.adr with | |
1984 | the start address of the function. */ | |
c906108c SS |
1985 | e->pdr.adr = BLOCK_START (b); |
1986 | ||
1987 | /* Correct incorrect setjmp procedure descriptor from the library | |
c5aa993b | 1988 | to make backtrace through setjmp work. */ |
c906108c SS |
1989 | if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp")) |
1990 | { | |
23136709 | 1991 | complaint (&symfile_complaints, "fixing bad setjmp PDR from libc"); |
c906108c SS |
1992 | e->pdr.pcreg = RA_REGNUM; |
1993 | e->pdr.regmask = 0x80000000; | |
1994 | e->pdr.regoffset = -4; | |
1995 | } | |
1996 | } | |
1997 | ||
1998 | /* It would be reasonable that functions that have been compiled | |
1999 | without debugging info have a btNil type for their return value, | |
2000 | and functions that are void and are compiled with debugging info | |
2001 | have btVoid. | |
2002 | gcc and DEC f77 put out btNil types for both cases, so btNil is mapped | |
2003 | to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info' | |
2004 | case right. | |
2005 | The glevel field in cur_fdr could be used to determine the presence | |
2006 | of debugging info, but GCC doesn't always pass the -g switch settings | |
2007 | to the assembler and GAS doesn't set the glevel field from the -g switch | |
2008 | settings. | |
2009 | To work around these problems, the return value type of a TYPE_CODE_VOID | |
2010 | function is adjusted accordingly if no debugging info was found in the | |
2011 | compilation unit. */ | |
c5aa993b | 2012 | |
c906108c SS |
2013 | if (processing_gcc_compilation == 0 |
2014 | && found_ecoff_debugging_info == 0 | |
2015 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID) | |
2016 | SYMBOL_TYPE (s) = nodebug_func_symbol_type; | |
2017 | } | |
2018 | ||
2019 | /* Relocate the extra function info pointed to by the symbol table. */ | |
2020 | ||
2021 | void | |
fba45db2 | 2022 | ecoff_relocate_efi (struct symbol *sym, CORE_ADDR delta) |
c906108c SS |
2023 | { |
2024 | struct mips_extra_func_info *e; | |
2025 | ||
2026 | e = (struct mips_extra_func_info *) SYMBOL_VALUE (sym); | |
c5aa993b | 2027 | |
c906108c SS |
2028 | e->pdr.adr += delta; |
2029 | } | |
2030 | ||
2031 | /* Parse the external symbol ES. Just call parse_symbol() after | |
2032 | making sure we know where the aux are for it. | |
2033 | BIGEND says whether aux entries are big-endian or little-endian. | |
2034 | ||
2035 | This routine clobbers top_stack->cur_block and ->cur_st. */ | |
2036 | ||
a14ed312 KB |
2037 | static void parse_external (EXTR *, int, struct section_offsets *, |
2038 | struct objfile *); | |
c906108c SS |
2039 | |
2040 | static void | |
fba45db2 KB |
2041 | parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets, |
2042 | struct objfile *objfile) | |
c906108c SS |
2043 | { |
2044 | union aux_ext *ax; | |
2045 | ||
2046 | if (es->ifd != ifdNil) | |
2047 | { | |
2048 | cur_fd = es->ifd; | |
2049 | cur_fdr = debug_info->fdr + cur_fd; | |
2050 | ax = debug_info->external_aux + cur_fdr->iauxBase; | |
2051 | } | |
2052 | else | |
2053 | { | |
2054 | cur_fdr = debug_info->fdr; | |
2055 | ax = 0; | |
2056 | } | |
2057 | ||
2058 | /* Reading .o files */ | |
c5aa993b | 2059 | if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil) |
c906108c SS |
2060 | { |
2061 | char *what; | |
2062 | switch (es->asym.st) | |
2063 | { | |
2064 | case stNil: | |
2065 | /* These are generated for static symbols in .o files, | |
2066 | ignore them. */ | |
2067 | return; | |
2068 | case stStaticProc: | |
2069 | case stProc: | |
2070 | what = "procedure"; | |
2071 | n_undef_procs++; | |
2072 | break; | |
2073 | case stGlobal: | |
2074 | what = "variable"; | |
2075 | n_undef_vars++; | |
2076 | break; | |
2077 | case stLabel: | |
2078 | what = "label"; | |
2079 | n_undef_labels++; | |
2080 | break; | |
2081 | default: | |
2082 | what = "symbol"; | |
2083 | break; | |
2084 | } | |
2085 | n_undef_symbols++; | |
2086 | /* FIXME: Turn this into a complaint? */ | |
2087 | if (info_verbose) | |
2088 | printf_filtered ("Warning: %s `%s' is undefined (in %s)\n", | |
2089 | what, debug_info->ssext + es->asym.iss, | |
2090 | fdr_name (cur_fdr)); | |
2091 | return; | |
2092 | } | |
2093 | ||
2094 | switch (es->asym.st) | |
2095 | { | |
2096 | case stProc: | |
2097 | case stStaticProc: | |
2098 | /* There is no need to parse the external procedure symbols. | |
c5aa993b JM |
2099 | If they are from objects compiled without -g, their index will |
2100 | be indexNil, and the symbol definition from the minimal symbol | |
2101 | is preferrable (yielding a function returning int instead of int). | |
2102 | If the index points to a local procedure symbol, the local | |
2103 | symbol already provides the correct type. | |
2104 | Note that the index of the external procedure symbol points | |
2105 | to the local procedure symbol in the local symbol table, and | |
2106 | _not_ to the auxiliary symbol info. */ | |
c906108c SS |
2107 | break; |
2108 | case stGlobal: | |
2109 | case stLabel: | |
2110 | /* Global common symbols are resolved by the runtime loader, | |
c5aa993b JM |
2111 | ignore them. */ |
2112 | if (SC_IS_COMMON (es->asym.sc)) | |
c906108c SS |
2113 | break; |
2114 | ||
2115 | /* Note that the case of a symbol with indexNil must be handled | |
c5aa993b | 2116 | anyways by parse_symbol(). */ |
b8fbeb18 | 2117 | parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets, objfile); |
c906108c SS |
2118 | break; |
2119 | default: | |
2120 | break; | |
2121 | } | |
2122 | } | |
2123 | ||
2124 | /* Parse the line number info for file descriptor FH into | |
2125 | GDB's linetable LT. MIPS' encoding requires a little bit | |
2126 | of magic to get things out. Note also that MIPS' line | |
2127 | numbers can go back and forth, apparently we can live | |
2128 | with that and do not need to reorder our linetables */ | |
2129 | ||
a14ed312 KB |
2130 | static void parse_lines (FDR *, PDR *, struct linetable *, int, |
2131 | struct partial_symtab *, CORE_ADDR); | |
c906108c SS |
2132 | |
2133 | static void | |
fba45db2 KB |
2134 | parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines, |
2135 | struct partial_symtab *pst, CORE_ADDR lowest_pdr_addr) | |
c906108c SS |
2136 | { |
2137 | unsigned char *base; | |
2138 | int j, k; | |
2139 | int delta, count, lineno = 0; | |
2140 | ||
2141 | if (fh->cbLine == 0) | |
2142 | return; | |
2143 | ||
2144 | /* Scan by procedure descriptors */ | |
2145 | k = 0; | |
2146 | for (j = 0; j < fh->cpd; j++, pr++) | |
2147 | { | |
2148 | CORE_ADDR l; | |
2149 | CORE_ADDR adr; | |
2150 | unsigned char *halt; | |
2151 | ||
2152 | /* No code for this one */ | |
2153 | if (pr->iline == ilineNil || | |
2154 | pr->lnLow == -1 || pr->lnHigh == -1) | |
2155 | continue; | |
2156 | ||
2157 | /* Determine start and end address of compressed line bytes for | |
c5aa993b | 2158 | this procedure. */ |
c906108c SS |
2159 | base = debug_info->line + fh->cbLineOffset; |
2160 | if (j != (fh->cpd - 1)) | |
c5aa993b | 2161 | halt = base + pr[1].cbLineOffset; |
c906108c | 2162 | else |
c5aa993b | 2163 | halt = base + fh->cbLine; |
c906108c SS |
2164 | base += pr->cbLineOffset; |
2165 | ||
5afc051b | 2166 | adr = pst->textlow + pr->adr - lowest_pdr_addr; |
c906108c SS |
2167 | |
2168 | l = adr >> 2; /* in words */ | |
c5aa993b | 2169 | for (lineno = pr->lnLow; base < halt;) |
c906108c SS |
2170 | { |
2171 | count = *base & 0x0f; | |
2172 | delta = *base++ >> 4; | |
2173 | if (delta >= 8) | |
2174 | delta -= 16; | |
2175 | if (delta == -8) | |
2176 | { | |
2177 | delta = (base[0] << 8) | base[1]; | |
2178 | if (delta >= 0x8000) | |
2179 | delta -= 0x10000; | |
2180 | base += 2; | |
2181 | } | |
2182 | lineno += delta; /* first delta is 0 */ | |
2183 | ||
2184 | /* Complain if the line table overflows. Could happen | |
2185 | with corrupt binaries. */ | |
2186 | if (lt->nitems >= maxlines) | |
2187 | { | |
23136709 KB |
2188 | complaint (&symfile_complaints, |
2189 | "guessed size of linetable for %s incorrectly", | |
2190 | fdr_name (fh)); | |
c906108c SS |
2191 | break; |
2192 | } | |
2193 | k = add_line (lt, lineno, l, k); | |
2194 | l += count + 1; | |
2195 | } | |
2196 | } | |
2197 | } | |
2198 | \f | |
23136709 KB |
2199 | static void |
2200 | function_outside_compilation_unit_complaint (const char *arg1) | |
2201 | { | |
2202 | complaint (&symfile_complaints, | |
2203 | "function `%s' appears to be defined outside of all compilation units", | |
2204 | arg1); | |
2205 | } | |
2206 | ||
c906108c SS |
2207 | /* Master parsing procedure for first-pass reading of file symbols |
2208 | into a partial_symtab. */ | |
2209 | ||
2210 | static void | |
fba45db2 | 2211 | parse_partial_symbols (struct objfile *objfile) |
c906108c SS |
2212 | { |
2213 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
2214 | const bfd_size_type external_rfd_size = debug_swap->external_rfd_size; | |
2215 | const bfd_size_type external_ext_size = debug_swap->external_ext_size; | |
12b9c64f AO |
2216 | void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in; |
2217 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; | |
2218 | void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in; | |
c906108c SS |
2219 | int f_idx, s_idx; |
2220 | HDRR *hdr = &debug_info->symbolic_header; | |
2221 | /* Running pointers */ | |
2222 | FDR *fh; | |
2223 | char *ext_out; | |
2224 | char *ext_out_end; | |
2225 | EXTR *ext_block; | |
2226 | register EXTR *ext_in; | |
2227 | EXTR *ext_in_end; | |
2228 | SYMR sh; | |
2229 | struct partial_symtab *pst; | |
2230 | int textlow_not_set = 1; | |
2231 | int past_first_source_file = 0; | |
2232 | ||
2233 | /* List of current psymtab's include files */ | |
2234 | char **psymtab_include_list; | |
2235 | int includes_allocated; | |
2236 | int includes_used; | |
2237 | EXTR *extern_tab; | |
2238 | struct pst_map *fdr_to_pst; | |
2239 | /* Index within current psymtab dependency list */ | |
2240 | struct partial_symtab **dependency_list; | |
2241 | int dependencies_used, dependencies_allocated; | |
2242 | struct cleanup *old_chain; | |
2243 | char *name; | |
2244 | enum language prev_language; | |
2245 | asection *text_sect; | |
2246 | int relocatable = 0; | |
2247 | ||
2248 | /* Irix 5.2 shared libraries have a fh->adr field of zero, but | |
2249 | the shared libraries are prelinked at a high memory address. | |
2250 | We have to adjust the start address of the object file for this case, | |
2251 | by setting it to the start address of the first procedure in the file. | |
2252 | But we should do no adjustments if we are debugging a .o file, where | |
2253 | the text section (and fh->adr) really starts at zero. */ | |
2254 | text_sect = bfd_get_section_by_name (cur_bfd, ".text"); | |
2255 | if (text_sect != NULL | |
2256 | && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC)) | |
2257 | relocatable = 1; | |
2258 | ||
2259 | extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack, | |
2260 | sizeof (EXTR) * hdr->iextMax); | |
2261 | ||
2262 | includes_allocated = 30; | |
2263 | includes_used = 0; | |
2264 | psymtab_include_list = (char **) alloca (includes_allocated * | |
2265 | sizeof (char *)); | |
2266 | next_symbol_text_func = mdebug_next_symbol_text; | |
2267 | ||
2268 | dependencies_allocated = 30; | |
2269 | dependencies_used = 0; | |
2270 | dependency_list = | |
2271 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2272 | sizeof (struct partial_symtab *)); | |
2273 | ||
2274 | last_source_file = NULL; | |
2275 | ||
2276 | /* | |
2277 | * Big plan: | |
2278 | * | |
2279 | * Only parse the Local and External symbols, and the Relative FDR. | |
2280 | * Fixup enough of the loader symtab to be able to use it. | |
2281 | * Allocate space only for the file's portions we need to | |
2282 | * look at. (XXX) | |
2283 | */ | |
2284 | ||
2285 | max_gdbinfo = 0; | |
2286 | max_glevel = MIN_GLEVEL; | |
2287 | ||
2288 | /* Allocate the map FDR -> PST. | |
2289 | Minor hack: -O3 images might claim some global data belongs | |
2290 | to FDR -1. We`ll go along with that */ | |
2291 | fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst); | |
b8c9b27d | 2292 | old_chain = make_cleanup (xfree, fdr_to_pst); |
c906108c SS |
2293 | fdr_to_pst++; |
2294 | { | |
d4f3574e | 2295 | struct partial_symtab *pst = new_psymtab ("", objfile); |
c906108c SS |
2296 | fdr_to_pst[-1].pst = pst; |
2297 | FDR_IDX (pst) = -1; | |
2298 | } | |
2299 | ||
2300 | /* Allocate the global pending list. */ | |
2301 | pending_list = | |
2302 | ((struct mdebug_pending **) | |
2303 | obstack_alloc (&objfile->psymbol_obstack, | |
2304 | hdr->ifdMax * sizeof (struct mdebug_pending *))); | |
12b9c64f | 2305 | memset (pending_list, 0, |
c906108c SS |
2306 | hdr->ifdMax * sizeof (struct mdebug_pending *)); |
2307 | ||
2308 | /* Pass 0 over external syms: swap them in. */ | |
2309 | ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR)); | |
b8c9b27d | 2310 | make_cleanup (xfree, ext_block); |
c906108c SS |
2311 | |
2312 | ext_out = (char *) debug_info->external_ext; | |
2313 | ext_out_end = ext_out + hdr->iextMax * external_ext_size; | |
2314 | ext_in = ext_block; | |
2315 | for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) | |
2316 | (*swap_ext_in) (cur_bfd, ext_out, ext_in); | |
2317 | ||
2318 | /* Pass 1 over external syms: Presize and partition the list */ | |
2319 | ext_in = ext_block; | |
2320 | ext_in_end = ext_in + hdr->iextMax; | |
2321 | for (; ext_in < ext_in_end; ext_in++) | |
2322 | { | |
2323 | /* See calls to complain below. */ | |
2324 | if (ext_in->ifd >= -1 | |
2325 | && ext_in->ifd < hdr->ifdMax | |
2326 | && ext_in->asym.iss >= 0 | |
2327 | && ext_in->asym.iss < hdr->issExtMax) | |
2328 | fdr_to_pst[ext_in->ifd].n_globals++; | |
2329 | } | |
2330 | ||
2331 | /* Pass 1.5 over files: partition out global symbol space */ | |
2332 | s_idx = 0; | |
2333 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) | |
2334 | { | |
2335 | fdr_to_pst[f_idx].globals_offset = s_idx; | |
2336 | s_idx += fdr_to_pst[f_idx].n_globals; | |
2337 | fdr_to_pst[f_idx].n_globals = 0; | |
2338 | } | |
2339 | ||
2340 | /* ECOFF in ELF: | |
2341 | ||
2342 | For ECOFF in ELF, we skip the creation of the minimal symbols. | |
2343 | The ECOFF symbols should be a subset of the Elf symbols, and the | |
2344 | section information of the elf symbols will be more accurate. | |
2345 | FIXME! What about Irix 5's native linker? | |
2346 | ||
2347 | By default, Elf sections which don't exist in ECOFF | |
2348 | get put in ECOFF's absolute section by the gnu linker. | |
2349 | Since absolute sections don't get relocated, we | |
2350 | end up calculating an address different from that of | |
2351 | the symbol's minimal symbol (created earlier from the | |
2352 | Elf symtab). | |
2353 | ||
2354 | To fix this, either : | |
2355 | 1) don't create the duplicate symbol | |
c5aa993b JM |
2356 | (assumes ECOFF symtab is a subset of the ELF symtab; |
2357 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2358 | 2) create it, only if lookup for existing symbol in ELF's minimal |
c5aa993b JM |
2359 | symbols fails |
2360 | (inefficient; | |
2361 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2362 | 3) create it, but lookup ELF's minimal symbol and use it's section |
c5aa993b JM |
2363 | during relocation, then modify "uniqify" phase to merge and |
2364 | eliminate the duplicate symbol | |
2365 | (highly inefficient) | |
c906108c SS |
2366 | |
2367 | I've implemented #1 here... | |
2368 | Skip the creation of the minimal symbols based on the ECOFF | |
2369 | symbol table. */ | |
2370 | ||
c5aa993b JM |
2371 | /* Pass 2 over external syms: fill in external symbols */ |
2372 | ext_in = ext_block; | |
2373 | ext_in_end = ext_in + hdr->iextMax; | |
2374 | for (; ext_in < ext_in_end; ext_in++) | |
2375 | { | |
2376 | enum minimal_symbol_type ms_type = mst_text; | |
2377 | CORE_ADDR svalue = ext_in->asym.value; | |
c906108c | 2378 | |
c5aa993b JM |
2379 | /* The Irix 5 native tools seem to sometimes generate bogus |
2380 | external symbols. */ | |
2381 | if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax) | |
2382 | { | |
23136709 KB |
2383 | complaint (&symfile_complaints, |
2384 | "bad ifd for external symbol: %d (max %ld)", ext_in->ifd, | |
2385 | hdr->ifdMax); | |
c5aa993b JM |
2386 | continue; |
2387 | } | |
2388 | if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax) | |
2389 | { | |
23136709 KB |
2390 | complaint (&symfile_complaints, |
2391 | "bad iss for external symbol: %ld (max %ld)", | |
2392 | ext_in->asym.iss, hdr->issExtMax); | |
c5aa993b JM |
2393 | continue; |
2394 | } | |
c906108c | 2395 | |
c5aa993b JM |
2396 | extern_tab[fdr_to_pst[ext_in->ifd].globals_offset |
2397 | + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; | |
c906108c SS |
2398 | |
2399 | ||
c5aa993b JM |
2400 | if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil) |
2401 | continue; | |
c906108c | 2402 | |
c906108c | 2403 | |
c5aa993b JM |
2404 | /* Pass 3 over files, over local syms: fill in static symbols */ |
2405 | name = debug_info->ssext + ext_in->asym.iss; | |
2406 | ||
2407 | /* Process ECOFF Symbol Types and Storage Classes */ | |
2408 | switch (ext_in->asym.st) | |
2409 | { | |
2410 | case stProc: | |
2411 | /* Beginnning of Procedure */ | |
b8fbeb18 | 2412 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2413 | break; |
2414 | case stStaticProc: | |
2415 | /* Load time only static procs */ | |
2416 | ms_type = mst_file_text; | |
b8fbeb18 | 2417 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2418 | break; |
2419 | case stGlobal: | |
2420 | /* External symbol */ | |
2421 | if (SC_IS_COMMON (ext_in->asym.sc)) | |
2422 | { | |
2423 | /* The value of a common symbol is its size, not its address. | |
2424 | Ignore it. */ | |
c906108c | 2425 | continue; |
c5aa993b JM |
2426 | } |
2427 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2428 | { | |
2429 | ms_type = mst_data; | |
b8fbeb18 | 2430 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c5aa993b JM |
2431 | } |
2432 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2433 | { | |
2434 | ms_type = mst_bss; | |
b8fbeb18 | 2435 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c5aa993b | 2436 | } |
0e931cf0 JB |
2437 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2438 | { | |
2439 | ms_type = mst_bss; | |
2440 | svalue += ANOFFSET (objfile->section_offsets, | |
2441 | get_section_index (objfile, ".sbss")); | |
2442 | } | |
c5aa993b JM |
2443 | else |
2444 | ms_type = mst_abs; | |
2445 | break; | |
2446 | case stLabel: | |
2447 | /* Label */ | |
0e931cf0 JB |
2448 | |
2449 | /* On certain platforms, some extra label symbols can be | |
2450 | generated by the linker. One possible usage for this kind | |
2451 | of symbols is to represent the address of the begining of a | |
2452 | given section. For instance, on Tru64 5.1, the address of | |
2453 | the _ftext label is the start address of the .text section. | |
2454 | ||
2455 | The storage class of these symbols is usually directly | |
2456 | related to the section to which the symbol refers. For | |
2457 | instance, on Tru64 5.1, the storage class for the _fdata | |
2458 | label is scData, refering to the .data section. | |
2459 | ||
2460 | It is actually possible that the section associated to the | |
2461 | storage class of the label does not exist. On True64 5.1 | |
2462 | for instance, the libm.so shared library does not contain | |
2463 | any .data section, although it contains a _fpdata label | |
2464 | which storage class is scData... Since these symbols are | |
2465 | usually useless for the debugger user anyway, we just | |
2466 | discard these symbols. | |
2467 | */ | |
2468 | ||
c5aa993b JM |
2469 | if (SC_IS_TEXT (ext_in->asym.sc)) |
2470 | { | |
0e931cf0 JB |
2471 | if (objfile->sect_index_text == -1) |
2472 | continue; | |
2473 | ||
c5aa993b | 2474 | ms_type = mst_file_text; |
b8fbeb18 | 2475 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2476 | } |
2477 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2478 | { | |
0e931cf0 JB |
2479 | if (objfile->sect_index_data == -1) |
2480 | continue; | |
2481 | ||
c5aa993b | 2482 | ms_type = mst_file_data; |
b8fbeb18 | 2483 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c5aa993b JM |
2484 | } |
2485 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2486 | { | |
0e931cf0 JB |
2487 | if (objfile->sect_index_bss == -1) |
2488 | continue; | |
2489 | ||
c5aa993b | 2490 | ms_type = mst_file_bss; |
b8fbeb18 | 2491 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c5aa993b | 2492 | } |
0e931cf0 JB |
2493 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2494 | { | |
2495 | const int sbss_sect_index = get_section_index (objfile, ".sbss"); | |
2496 | ||
2497 | if (sbss_sect_index == -1) | |
2498 | continue; | |
2499 | ||
2500 | ms_type = mst_file_bss; | |
2501 | svalue += ANOFFSET (objfile->section_offsets, sbss_sect_index); | |
2502 | } | |
c5aa993b JM |
2503 | else |
2504 | ms_type = mst_abs; | |
2505 | break; | |
2506 | case stLocal: | |
2507 | case stNil: | |
2508 | /* The alpha has the section start addresses in stLocal symbols | |
2509 | whose name starts with a `.'. Skip those but complain for all | |
2510 | other stLocal symbols. | |
2511 | Irix6 puts the section start addresses in stNil symbols, skip | |
2512 | those too. */ | |
2513 | if (name[0] == '.') | |
2514 | continue; | |
2515 | /* Fall through. */ | |
2516 | default: | |
2517 | ms_type = mst_unknown; | |
23136709 | 2518 | unknown_ext_complaint (name); |
c5aa993b JM |
2519 | } |
2520 | if (!ECOFF_IN_ELF (cur_bfd)) | |
2521 | prim_record_minimal_symbol (name, svalue, ms_type, objfile); | |
2522 | } | |
c906108c SS |
2523 | |
2524 | /* Pass 3 over files, over local syms: fill in static symbols */ | |
2525 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) | |
2526 | { | |
2527 | struct partial_symtab *save_pst; | |
2528 | EXTR *ext_ptr; | |
2529 | CORE_ADDR textlow; | |
2530 | ||
2531 | cur_fdr = fh = debug_info->fdr + f_idx; | |
2532 | ||
2533 | if (fh->csym == 0) | |
2534 | { | |
2535 | fdr_to_pst[f_idx].pst = NULL; | |
2536 | continue; | |
2537 | } | |
2538 | ||
2539 | /* Determine the start address for this object file from the | |
c5aa993b | 2540 | file header and relocate it, except for Irix 5.2 zero fh->adr. */ |
c906108c SS |
2541 | if (fh->cpd) |
2542 | { | |
2543 | textlow = fh->adr; | |
2544 | if (relocatable || textlow != 0) | |
b8fbeb18 | 2545 | textlow += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2546 | } |
2547 | else | |
2548 | textlow = 0; | |
d4f3574e | 2549 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
c906108c SS |
2550 | fdr_name (fh), |
2551 | textlow, | |
2552 | objfile->global_psymbols.next, | |
2553 | objfile->static_psymbols.next); | |
2554 | pst->read_symtab_private = ((char *) | |
2555 | obstack_alloc (&objfile->psymbol_obstack, | |
2556 | sizeof (struct symloc))); | |
12b9c64f | 2557 | memset (pst->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
2558 | |
2559 | save_pst = pst; | |
2560 | FDR_IDX (pst) = f_idx; | |
2561 | CUR_BFD (pst) = cur_bfd; | |
2562 | DEBUG_SWAP (pst) = debug_swap; | |
2563 | DEBUG_INFO (pst) = debug_info; | |
2564 | PENDING_LIST (pst) = pending_list; | |
2565 | ||
2566 | /* The way to turn this into a symtab is to call... */ | |
2567 | pst->read_symtab = mdebug_psymtab_to_symtab; | |
2568 | ||
2569 | /* Set up language for the pst. | |
2570 | The language from the FDR is used if it is unambigious (e.g. cfront | |
c5aa993b JM |
2571 | with native cc and g++ will set the language to C). |
2572 | Otherwise we have to deduce the language from the filename. | |
2573 | Native ecoff has every header file in a separate FDR, so | |
2574 | deduce_language_from_filename will return language_unknown for | |
2575 | a header file, which is not what we want. | |
2576 | But the FDRs for the header files are after the FDR for the source | |
2577 | file, so we can assign the language of the source file to the | |
2578 | following header files. Then we save the language in the private | |
2579 | pst data so that we can reuse it when building symtabs. */ | |
c906108c SS |
2580 | prev_language = psymtab_language; |
2581 | ||
2582 | switch (fh->lang) | |
2583 | { | |
2584 | case langCplusplusV2: | |
2585 | psymtab_language = language_cplus; | |
2586 | break; | |
2587 | default: | |
2588 | psymtab_language = deduce_language_from_filename (fdr_name (fh)); | |
2589 | break; | |
2590 | } | |
2591 | if (psymtab_language == language_unknown) | |
2592 | psymtab_language = prev_language; | |
2593 | PST_PRIVATE (pst)->pst_language = psymtab_language; | |
2594 | ||
5afc051b | 2595 | pst->texthigh = pst->textlow; |
c906108c SS |
2596 | |
2597 | /* For stabs-in-ecoff files, the second symbol must be @stab. | |
c5aa993b JM |
2598 | This symbol is emitted by mips-tfile to signal that the |
2599 | current object file uses encapsulated stabs instead of mips | |
2600 | ecoff for local symbols. (It is the second symbol because | |
2601 | the first symbol is the stFile used to signal the start of a | |
2602 | file). */ | |
c906108c SS |
2603 | processing_gcc_compilation = 0; |
2604 | if (fh->csym >= 2) | |
2605 | { | |
2606 | (*swap_sym_in) (cur_bfd, | |
2607 | ((char *) debug_info->external_sym | |
2608 | + (fh->isymBase + 1) * external_sym_size), | |
2609 | &sh); | |
2610 | if (STREQ (debug_info->ss + fh->issBase + sh.iss, stabs_symbol)) | |
2611 | processing_gcc_compilation = 2; | |
2612 | } | |
2613 | ||
2614 | if (processing_gcc_compilation != 0) | |
2615 | { | |
2616 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
2617 | { | |
2618 | int type_code; | |
2619 | char *namestring; | |
2620 | ||
2621 | (*swap_sym_in) (cur_bfd, | |
2622 | (((char *) debug_info->external_sym) | |
c5aa993b | 2623 | + (fh->isymBase + cur_sdx) * external_sym_size), |
c906108c SS |
2624 | &sh); |
2625 | type_code = ECOFF_UNMARK_STAB (sh.index); | |
2626 | if (!ECOFF_IS_STAB (&sh)) | |
2627 | { | |
2628 | if (sh.st == stProc || sh.st == stStaticProc) | |
2629 | { | |
2630 | CORE_ADDR procaddr; | |
2631 | long isym; | |
c5aa993b | 2632 | |
b8fbeb18 | 2633 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2634 | if (sh.st == stStaticProc) |
2635 | { | |
2636 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
2637 | prim_record_minimal_symbol_and_info (namestring, | |
2638 | sh.value, | |
2639 | mst_file_text, | |
2640 | NULL, | |
b8fbeb18 | 2641 | SECT_OFF_TEXT (objfile), |
c906108c SS |
2642 | NULL, |
2643 | objfile); | |
2644 | } | |
2645 | procaddr = sh.value; | |
2646 | ||
2647 | isym = AUX_GET_ISYM (fh->fBigendian, | |
2648 | (debug_info->external_aux | |
2649 | + fh->iauxBase | |
2650 | + sh.index)); | |
2651 | (*swap_sym_in) (cur_bfd, | |
2652 | ((char *) debug_info->external_sym | |
2653 | + ((fh->isymBase + isym - 1) | |
2654 | * external_sym_size)), | |
2655 | &sh); | |
2656 | if (sh.st == stEnd) | |
2657 | { | |
2658 | CORE_ADDR high = procaddr + sh.value; | |
2659 | ||
c5aa993b | 2660 | /* Kludge for Irix 5.2 zero fh->adr. */ |
c906108c | 2661 | if (!relocatable |
5afc051b JB |
2662 | && (pst->textlow == 0 || procaddr < pst->textlow)) |
2663 | pst->textlow = procaddr; | |
2664 | if (high > pst->texthigh) | |
2665 | pst->texthigh = high; | |
c906108c SS |
2666 | } |
2667 | } | |
2668 | else if (sh.st == stStatic) | |
2669 | { | |
2670 | switch (sh.sc) | |
2671 | { | |
2672 | case scUndefined: | |
2673 | case scSUndefined: | |
2674 | case scNil: | |
2675 | case scAbs: | |
2676 | break; | |
2677 | ||
2678 | case scData: | |
2679 | case scSData: | |
2680 | case scRData: | |
2681 | case scPData: | |
2682 | case scXData: | |
2683 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
b8fbeb18 | 2684 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
2685 | prim_record_minimal_symbol_and_info (namestring, |
2686 | sh.value, | |
2687 | mst_file_data, | |
2688 | NULL, | |
b8fbeb18 | 2689 | SECT_OFF_DATA (objfile), |
c906108c SS |
2690 | NULL, |
2691 | objfile); | |
2692 | break; | |
2693 | ||
2694 | default: | |
2695 | /* FIXME! Shouldn't this use cases for bss, | |
2696 | then have the default be abs? */ | |
2697 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
b8fbeb18 | 2698 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
2699 | prim_record_minimal_symbol_and_info (namestring, |
2700 | sh.value, | |
2701 | mst_file_bss, | |
2702 | NULL, | |
b8fbeb18 | 2703 | SECT_OFF_BSS (objfile), |
c906108c SS |
2704 | NULL, |
2705 | objfile); | |
2706 | break; | |
2707 | } | |
2708 | } | |
2709 | continue; | |
2710 | } | |
2711 | /* Handle stabs continuation */ | |
2712 | { | |
2713 | char *stabstring = debug_info->ss + fh->issBase + sh.iss; | |
2714 | int len = strlen (stabstring); | |
c5aa993b | 2715 | while (stabstring[len - 1] == '\\') |
c906108c SS |
2716 | { |
2717 | SYMR sh2; | |
2718 | char *stabstring1 = stabstring; | |
2719 | char *stabstring2; | |
2720 | int len2; | |
2721 | ||
2722 | /* Ignore continuation char from 1st string */ | |
2723 | len--; | |
2724 | ||
2725 | /* Read next stabstring */ | |
2726 | cur_sdx++; | |
2727 | (*swap_sym_in) (cur_bfd, | |
2728 | (((char *) debug_info->external_sym) | |
c5aa993b | 2729 | + (fh->isymBase + cur_sdx) |
c906108c SS |
2730 | * external_sym_size), |
2731 | &sh2); | |
2732 | stabstring2 = debug_info->ss + fh->issBase + sh2.iss; | |
2733 | len2 = strlen (stabstring2); | |
2734 | ||
2735 | /* Concatinate stabstring2 with stabstring1 */ | |
2736 | if (stabstring | |
c5aa993b | 2737 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
c906108c SS |
2738 | stabstring = xrealloc (stabstring, len + len2 + 1); |
2739 | else | |
86f902e0 FF |
2740 | { |
2741 | stabstring = xmalloc (len + len2 + 1); | |
2742 | strcpy (stabstring, stabstring1); | |
2743 | } | |
c906108c SS |
2744 | strcpy (stabstring + len, stabstring2); |
2745 | len += len2; | |
2746 | } | |
2747 | ||
d3119d1e EZ |
2748 | switch (type_code) |
2749 | { | |
d3119d1e EZ |
2750 | char *p; |
2751 | /* | |
2752 | * Standard, external, non-debugger, symbols | |
2753 | */ | |
2754 | ||
2755 | case N_TEXT | N_EXT: | |
2756 | case N_NBTEXT | N_EXT: | |
2757 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2758 | goto record_it; | |
2759 | ||
2760 | case N_DATA | N_EXT: | |
2761 | case N_NBDATA | N_EXT: | |
2762 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2763 | goto record_it; | |
2764 | ||
2765 | case N_BSS: | |
2766 | case N_BSS | N_EXT: | |
2767 | case N_NBBSS | N_EXT: | |
2768 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
2769 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); | |
2770 | goto record_it; | |
2771 | ||
2772 | case N_ABS | N_EXT: | |
2773 | record_it: | |
2774 | continue; | |
2775 | ||
2776 | /* Standard, local, non-debugger, symbols */ | |
2777 | ||
2778 | case N_NBTEXT: | |
2779 | ||
2780 | /* We need to be able to deal with both N_FN or N_TEXT, | |
2781 | because we have no way of knowing whether the sys-supplied ld | |
2782 | or GNU ld was used to make the executable. Sequents throw | |
2783 | in another wrinkle -- they renumbered N_FN. */ | |
2784 | ||
2785 | case N_FN: | |
2786 | case N_FN_SEQ: | |
2787 | case N_TEXT: | |
2788 | continue; | |
2789 | ||
2790 | case N_DATA: | |
2791 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2792 | goto record_it; | |
2793 | ||
2794 | case N_UNDF | N_EXT: | |
2795 | continue; /* Just undefined, not COMMON */ | |
2796 | ||
2797 | case N_UNDF: | |
2798 | continue; | |
2799 | ||
2800 | /* Lots of symbol types we can just ignore. */ | |
2801 | ||
2802 | case N_ABS: | |
2803 | case N_NBDATA: | |
2804 | case N_NBBSS: | |
2805 | continue; | |
2806 | ||
2807 | /* Keep going . . . */ | |
2808 | ||
2809 | /* | |
2810 | * Special symbol types for GNU | |
2811 | */ | |
2812 | case N_INDR: | |
2813 | case N_INDR | N_EXT: | |
2814 | case N_SETA: | |
2815 | case N_SETA | N_EXT: | |
2816 | case N_SETT: | |
2817 | case N_SETT | N_EXT: | |
2818 | case N_SETD: | |
2819 | case N_SETD | N_EXT: | |
2820 | case N_SETB: | |
2821 | case N_SETB | N_EXT: | |
2822 | case N_SETV: | |
2823 | continue; | |
2824 | ||
2825 | /* | |
2826 | * Debugger symbols | |
2827 | */ | |
2828 | ||
2829 | case N_SO: | |
2830 | { | |
2831 | CORE_ADDR valu; | |
2832 | static int prev_so_symnum = -10; | |
2833 | static int first_so_symnum; | |
2834 | char *p; | |
2835 | int prev_textlow_not_set; | |
2836 | ||
2837 | valu = sh.value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2838 | ||
2839 | prev_textlow_not_set = textlow_not_set; | |
2840 | ||
2841 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
2842 | /* A zero value is probably an indication for the SunPRO 3.0 | |
2843 | compiler. end_psymtab explicitly tests for zero, so | |
2844 | don't relocate it. */ | |
2845 | ||
2846 | if (sh.value == 0) | |
2847 | { | |
2848 | textlow_not_set = 1; | |
2849 | valu = 0; | |
2850 | } | |
2851 | else | |
2852 | textlow_not_set = 0; | |
2853 | #else | |
2854 | textlow_not_set = 0; | |
2855 | #endif | |
2856 | past_first_source_file = 1; | |
2857 | ||
2858 | if (prev_so_symnum != symnum - 1) | |
2859 | { /* Here if prev stab wasn't N_SO */ | |
2860 | first_so_symnum = symnum; | |
2861 | ||
2862 | if (pst) | |
2863 | { | |
2864 | pst = (struct partial_symtab *) 0; | |
2865 | includes_used = 0; | |
2866 | dependencies_used = 0; | |
2867 | } | |
2868 | } | |
2869 | ||
2870 | prev_so_symnum = symnum; | |
c906108c | 2871 | |
d3119d1e EZ |
2872 | /* End the current partial symtab and start a new one */ |
2873 | ||
2874 | /* SET_NAMESTRING ();*/ | |
2875 | namestring = stabstring; | |
2876 | ||
2877 | /* Null name means end of .o file. Don't start a new one. */ | |
2878 | if (*namestring == '\000') | |
2879 | continue; | |
2880 | ||
2881 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
2882 | The first one is a directory name; the second the file name. | |
2883 | If pst exists, is empty, and has a filename ending in '/', | |
2884 | we assume the previous N_SO was a directory name. */ | |
2885 | ||
2886 | p = strrchr (namestring, '/'); | |
2887 | if (p && *(p + 1) == '\000') | |
2888 | continue; /* Simply ignore directory name SOs */ | |
2889 | ||
2890 | /* Some other compilers (C++ ones in particular) emit useless | |
2891 | SOs for non-existant .c files. We ignore all subsequent SOs that | |
2892 | immediately follow the first. */ | |
2893 | ||
2894 | if (!pst) | |
2895 | pst = save_pst; | |
2896 | continue; | |
2897 | } | |
2898 | ||
2899 | case N_BINCL: | |
2900 | continue; | |
2901 | ||
2902 | case N_SOL: | |
2903 | { | |
2904 | enum language tmp_language; | |
2905 | /* Mark down an include file in the current psymtab */ | |
2906 | ||
2907 | /* SET_NAMESTRING ();*/ | |
2908 | namestring = stabstring; | |
2909 | ||
2910 | tmp_language = deduce_language_from_filename (namestring); | |
2911 | ||
2912 | /* Only change the psymtab's language if we've learned | |
2913 | something useful (eg. tmp_language is not language_unknown). | |
2914 | In addition, to match what start_subfile does, never change | |
2915 | from C++ to C. */ | |
2916 | if (tmp_language != language_unknown | |
2917 | && (tmp_language != language_c | |
2918 | || psymtab_language != language_cplus)) | |
2919 | psymtab_language = tmp_language; | |
2920 | ||
2921 | /* In C++, one may expect the same filename to come round many | |
2922 | times, when code is coming alternately from the main file | |
2923 | and from inline functions in other files. So I check to see | |
2924 | if this is a file we've seen before -- either the main | |
2925 | source file, or a previously included file. | |
2926 | ||
2927 | This seems to be a lot of time to be spending on N_SOL, but | |
2928 | things like "break c-exp.y:435" need to work (I | |
2929 | suppose the psymtab_include_list could be hashed or put | |
2930 | in a binary tree, if profiling shows this is a major hog). */ | |
2931 | if (pst && STREQ (namestring, pst->filename)) | |
2932 | continue; | |
2933 | { | |
2934 | register int i; | |
2935 | for (i = 0; i < includes_used; i++) | |
2936 | if (STREQ (namestring, psymtab_include_list[i])) | |
2937 | { | |
2938 | i = -1; | |
2939 | break; | |
2940 | } | |
2941 | if (i == -1) | |
2942 | continue; | |
2943 | } | |
2944 | ||
2945 | psymtab_include_list[includes_used++] = namestring; | |
2946 | if (includes_used >= includes_allocated) | |
2947 | { | |
2948 | char **orig = psymtab_include_list; | |
2949 | ||
2950 | psymtab_include_list = (char **) | |
2951 | alloca ((includes_allocated *= 2) * | |
2952 | sizeof (char *)); | |
4efb68b1 | 2953 | memcpy (psymtab_include_list, orig, |
d3119d1e EZ |
2954 | includes_used * sizeof (char *)); |
2955 | } | |
2956 | continue; | |
2957 | } | |
2958 | case N_LSYM: /* Typedef or automatic variable. */ | |
2959 | case N_STSYM: /* Data seg var -- static */ | |
2960 | case N_LCSYM: /* BSS " */ | |
2961 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
2962 | case N_NBSTS: /* Gould nobase. */ | |
2963 | case N_NBLCS: /* symbols. */ | |
2964 | case N_FUN: | |
2965 | case N_GSYM: /* Global (extern) variable; can be | |
2966 | data or bss (sigh FIXME). */ | |
2967 | ||
2968 | /* Following may probably be ignored; I'll leave them here | |
2969 | for now (until I do Pascal and Modula 2 extensions). */ | |
2970 | ||
2971 | case N_PC: /* I may or may not need this; I | |
2972 | suspect not. */ | |
2973 | case N_M2C: /* I suspect that I can ignore this here. */ | |
2974 | case N_SCOPE: /* Same. */ | |
2975 | ||
2976 | /* SET_NAMESTRING ();*/ | |
2977 | namestring = stabstring; | |
2978 | p = (char *) strchr (namestring, ':'); | |
2979 | if (!p) | |
2980 | continue; /* Not a debugging symbol. */ | |
2981 | ||
2982 | ||
2983 | ||
2984 | /* Main processing section for debugging symbols which | |
2985 | the initial read through the symbol tables needs to worry | |
2986 | about. If we reach this point, the symbol which we are | |
2987 | considering is definitely one we are interested in. | |
2988 | p must also contain the (valid) index into the namestring | |
2989 | which indicates the debugging type symbol. */ | |
2990 | ||
2991 | switch (p[1]) | |
2992 | { | |
2993 | case 'S': | |
2994 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2995 | #ifdef STATIC_TRANSFORM_NAME | |
2996 | namestring = STATIC_TRANSFORM_NAME (namestring); | |
2997 | #endif | |
2998 | add_psymbol_to_list (namestring, p - namestring, | |
2999 | VAR_NAMESPACE, LOC_STATIC, | |
3000 | &objfile->static_psymbols, | |
3001 | 0, sh.value, | |
3002 | psymtab_language, objfile); | |
3003 | continue; | |
3004 | case 'G': | |
3005 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
3006 | /* The addresses in these entries are reported to be | |
3007 | wrong. See the code that reads 'G's for symtabs. */ | |
3008 | add_psymbol_to_list (namestring, p - namestring, | |
3009 | VAR_NAMESPACE, LOC_STATIC, | |
3010 | &objfile->global_psymbols, | |
3011 | 0, sh.value, | |
3012 | psymtab_language, objfile); | |
3013 | continue; | |
3014 | ||
3015 | case 'T': | |
3016 | /* When a 'T' entry is defining an anonymous enum, it | |
3017 | may have a name which is the empty string, or a | |
3018 | single space. Since they're not really defining a | |
3019 | symbol, those shouldn't go in the partial symbol | |
3020 | table. We do pick up the elements of such enums at | |
3021 | 'check_enum:', below. */ | |
3022 | if (p >= namestring + 2 | |
3023 | || (p == namestring + 1 | |
3024 | && namestring[0] != ' ')) | |
3025 | { | |
3026 | add_psymbol_to_list (namestring, p - namestring, | |
3027 | STRUCT_NAMESPACE, LOC_TYPEDEF, | |
3028 | &objfile->static_psymbols, | |
3029 | sh.value, 0, | |
3030 | psymtab_language, objfile); | |
3031 | if (p[2] == 't') | |
3032 | { | |
3033 | /* Also a typedef with the same name. */ | |
3034 | add_psymbol_to_list (namestring, p - namestring, | |
3035 | VAR_NAMESPACE, LOC_TYPEDEF, | |
3036 | &objfile->static_psymbols, | |
3037 | sh.value, 0, | |
3038 | psymtab_language, objfile); | |
3039 | p += 1; | |
3040 | } | |
25caa7a8 EZ |
3041 | #if 0 /* OBSOLETE CFront */ |
3042 | // OBSOLETE /* The semantics of C++ state that "struct foo { ... }" | |
3043 | // OBSOLETE also defines a typedef for "foo". Unfortuantely, cfront | |
3044 | // OBSOLETE never makes the typedef when translating from C++ to C. | |
3045 | // OBSOLETE We make the typedef here so that "ptype foo" works as | |
3046 | // OBSOLETE expected for cfront translated code. */ | |
3047 | // OBSOLETE else if (psymtab_language == language_cplus) | |
3048 | // OBSOLETE { | |
3049 | // OBSOLETE /* Also a typedef with the same name. */ | |
3050 | // OBSOLETE add_psymbol_to_list (namestring, p - namestring, | |
3051 | // OBSOLETE VAR_NAMESPACE, LOC_TYPEDEF, | |
3052 | // OBSOLETE &objfile->static_psymbols, | |
3053 | // OBSOLETE sh.value, 0, | |
3054 | // OBSOLETE psymtab_language, objfile); | |
3055 | // OBSOLETE } | |
3056 | #endif /* OBSOLETE CFront */ | |
d3119d1e EZ |
3057 | } |
3058 | goto check_enum; | |
3059 | case 't': | |
3060 | if (p != namestring) /* a name is there, not just :T... */ | |
3061 | { | |
3062 | add_psymbol_to_list (namestring, p - namestring, | |
3063 | VAR_NAMESPACE, LOC_TYPEDEF, | |
3064 | &objfile->static_psymbols, | |
3065 | sh.value, 0, | |
3066 | psymtab_language, objfile); | |
3067 | } | |
3068 | check_enum: | |
3069 | /* If this is an enumerated type, we need to | |
3070 | add all the enum constants to the partial symbol | |
3071 | table. This does not cover enums without names, e.g. | |
3072 | "enum {a, b} c;" in C, but fortunately those are | |
3073 | rare. There is no way for GDB to find those from the | |
3074 | enum type without spending too much time on it. Thus | |
3075 | to solve this problem, the compiler needs to put out the | |
3076 | enum in a nameless type. GCC2 does this. */ | |
3077 | ||
3078 | /* We are looking for something of the form | |
3079 | <name> ":" ("t" | "T") [<number> "="] "e" | |
3080 | {<constant> ":" <value> ","} ";". */ | |
3081 | ||
3082 | /* Skip over the colon and the 't' or 'T'. */ | |
3083 | p += 2; | |
3084 | /* This type may be given a number. Also, numbers can come | |
3085 | in pairs like (0,26). Skip over it. */ | |
3086 | while ((*p >= '0' && *p <= '9') | |
3087 | || *p == '(' || *p == ',' || *p == ')' | |
3088 | || *p == '=') | |
3089 | p++; | |
3090 | ||
3091 | if (*p++ == 'e') | |
3092 | { | |
3093 | /* The aix4 compiler emits extra crud before the members. */ | |
3094 | if (*p == '-') | |
3095 | { | |
3096 | /* Skip over the type (?). */ | |
3097 | while (*p != ':') | |
3098 | p++; | |
3099 | ||
3100 | /* Skip over the colon. */ | |
3101 | p++; | |
3102 | } | |
3103 | ||
3104 | /* We have found an enumerated type. */ | |
3105 | /* According to comments in read_enum_type | |
3106 | a comma could end it instead of a semicolon. | |
3107 | I don't know where that happens. | |
3108 | Accept either. */ | |
3109 | while (*p && *p != ';' && *p != ',') | |
3110 | { | |
3111 | char *q; | |
3112 | ||
3113 | /* Check for and handle cretinous dbx symbol name | |
3114 | continuation! */ | |
3115 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
3116 | p = next_symbol_text (objfile); | |
3117 | ||
3118 | /* Point to the character after the name | |
3119 | of the enum constant. */ | |
3120 | for (q = p; *q && *q != ':'; q++) | |
3121 | ; | |
3122 | /* Note that the value doesn't matter for | |
3123 | enum constants in psymtabs, just in symtabs. */ | |
3124 | add_psymbol_to_list (p, q - p, | |
3125 | VAR_NAMESPACE, LOC_CONST, | |
3126 | &objfile->static_psymbols, 0, | |
3127 | 0, psymtab_language, objfile); | |
3128 | /* Point past the name. */ | |
3129 | p = q; | |
3130 | /* Skip over the value. */ | |
3131 | while (*p && *p != ',') | |
3132 | p++; | |
3133 | /* Advance past the comma. */ | |
3134 | if (*p) | |
3135 | p++; | |
3136 | } | |
3137 | } | |
3138 | continue; | |
3139 | case 'c': | |
3140 | /* Constant, e.g. from "const" in Pascal. */ | |
3141 | add_psymbol_to_list (namestring, p - namestring, | |
3142 | VAR_NAMESPACE, LOC_CONST, | |
3143 | &objfile->static_psymbols, sh.value, | |
3144 | 0, psymtab_language, objfile); | |
3145 | continue; | |
3146 | ||
3147 | case 'f': | |
3148 | if (! pst) | |
3149 | { | |
3150 | int name_len = p - namestring; | |
3151 | char *name = xmalloc (name_len + 1); | |
3152 | memcpy (name, namestring, name_len); | |
3153 | name[name_len] = '\0'; | |
23136709 | 3154 | function_outside_compilation_unit_complaint (name); |
d3119d1e EZ |
3155 | xfree (name); |
3156 | } | |
3157 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3158 | add_psymbol_to_list (namestring, p - namestring, | |
3159 | VAR_NAMESPACE, LOC_BLOCK, | |
3160 | &objfile->static_psymbols, | |
3161 | 0, sh.value, | |
3162 | psymtab_language, objfile); | |
3163 | continue; | |
3164 | ||
3165 | /* Global functions were ignored here, but now they | |
3166 | are put into the global psymtab like one would expect. | |
3167 | They're also in the minimal symbol table. */ | |
3168 | case 'F': | |
3169 | if (! pst) | |
3170 | { | |
3171 | int name_len = p - namestring; | |
3172 | char *name = xmalloc (name_len + 1); | |
3173 | memcpy (name, namestring, name_len); | |
3174 | name[name_len] = '\0'; | |
23136709 | 3175 | function_outside_compilation_unit_complaint (name); |
d3119d1e EZ |
3176 | xfree (name); |
3177 | } | |
3178 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3179 | add_psymbol_to_list (namestring, p - namestring, | |
3180 | VAR_NAMESPACE, LOC_BLOCK, | |
3181 | &objfile->global_psymbols, | |
3182 | 0, sh.value, | |
3183 | psymtab_language, objfile); | |
3184 | continue; | |
3185 | ||
3186 | /* Two things show up here (hopefully); static symbols of | |
3187 | local scope (static used inside braces) or extensions | |
3188 | of structure symbols. We can ignore both. */ | |
3189 | case 'V': | |
3190 | case '(': | |
3191 | case '0': | |
3192 | case '1': | |
3193 | case '2': | |
3194 | case '3': | |
3195 | case '4': | |
3196 | case '5': | |
3197 | case '6': | |
3198 | case '7': | |
3199 | case '8': | |
3200 | case '9': | |
3201 | case '-': | |
3202 | case '#': /* for symbol identification (used in live ranges) */ | |
25caa7a8 EZ |
3203 | #if 0 /* OBSOLETE CFront */ |
3204 | // OBSOLETE /* added to support cfront stabs strings */ | |
3205 | // OBSOLETE case 'Z': /* for definition continuations */ | |
3206 | // OBSOLETE case 'P': /* for prototypes */ | |
3207 | #endif /* OBSOLETE CFront */ | |
d3119d1e EZ |
3208 | continue; |
3209 | ||
3210 | case ':': | |
3211 | /* It is a C++ nested symbol. We don't need to record it | |
3212 | (I don't think); if we try to look up foo::bar::baz, | |
3213 | then symbols for the symtab containing foo should get | |
3214 | read in, I think. */ | |
3215 | /* Someone says sun cc puts out symbols like | |
3216 | /foo/baz/maclib::/usr/local/bin/maclib, | |
3217 | which would get here with a symbol type of ':'. */ | |
3218 | continue; | |
3219 | ||
3220 | default: | |
3221 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
3222 | of a continued stab can show up here. The question is | |
3223 | whether they ever can mimic a normal stab--it would be | |
3224 | nice if not, since we certainly don't want to spend the | |
3225 | time searching to the end of every string looking for | |
3226 | a backslash. */ | |
3227 | ||
23136709 KB |
3228 | complaint (&symfile_complaints, |
3229 | "unknown symbol descriptor `%c'", p[1]); | |
d3119d1e EZ |
3230 | |
3231 | /* Ignore it; perhaps it is an extension that we don't | |
3232 | know about. */ | |
3233 | continue; | |
3234 | } | |
3235 | ||
3236 | case N_EXCL: | |
3237 | continue; | |
3238 | ||
3239 | case N_ENDM: | |
3240 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
5afc051b JB |
3241 | /* Solaris 2 end of module, finish current partial |
3242 | symbol table. END_PSYMTAB will set | |
3243 | pst->texthigh to the proper value, which is | |
3244 | necessary if a module compiled without | |
3245 | debugging info follows this module. */ | |
d3119d1e EZ |
3246 | if (pst) |
3247 | { | |
3248 | pst = (struct partial_symtab *) 0; | |
3249 | includes_used = 0; | |
3250 | dependencies_used = 0; | |
3251 | } | |
3252 | #endif | |
3253 | continue; | |
3254 | ||
3255 | case N_RBRAC: | |
5afc051b JB |
3256 | if (sh.value > save_pst->texthigh) |
3257 | save_pst->texthigh = sh.value; | |
d3119d1e EZ |
3258 | continue; |
3259 | case N_EINCL: | |
3260 | case N_DSLINE: | |
3261 | case N_BSLINE: | |
3262 | case N_SSYM: /* Claim: Structure or union element. | |
3263 | Hopefully, I can ignore this. */ | |
3264 | case N_ENTRY: /* Alternate entry point; can ignore. */ | |
3265 | case N_MAIN: /* Can definitely ignore this. */ | |
3266 | case N_CATCH: /* These are GNU C++ extensions */ | |
3267 | case N_EHDECL: /* that can safely be ignored here. */ | |
3268 | case N_LENG: | |
3269 | case N_BCOMM: | |
3270 | case N_ECOMM: | |
3271 | case N_ECOML: | |
3272 | case N_FNAME: | |
3273 | case N_SLINE: | |
3274 | case N_RSYM: | |
3275 | case N_PSYM: | |
3276 | case N_LBRAC: | |
3277 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
3278 | case N_DEFD: /* GNU Modula-2 */ | |
3279 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
3280 | ||
3281 | case N_OBJ: /* useless types from Solaris */ | |
3282 | case N_OPT: | |
3283 | /* These symbols aren't interesting; don't worry about them */ | |
3284 | ||
3285 | continue; | |
3286 | ||
3287 | default: | |
3288 | /* If we haven't found it yet, ignore it. It's probably some | |
3289 | new type we don't know about yet. */ | |
23136709 KB |
3290 | complaint (&symfile_complaints, "unknown symbol type %s", |
3291 | local_hex_string (type_code)); /*CUR_SYMBOL_TYPE*/ | |
d3119d1e EZ |
3292 | continue; |
3293 | } | |
c5aa993b | 3294 | if (stabstring |
c906108c | 3295 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
b8c9b27d | 3296 | xfree (stabstring); |
c906108c | 3297 | } |
c5aa993b | 3298 | /* end - Handle continuation */ |
c906108c SS |
3299 | } |
3300 | } | |
3301 | else | |
3302 | { | |
3303 | for (cur_sdx = 0; cur_sdx < fh->csym;) | |
3304 | { | |
3305 | char *name; | |
3306 | enum address_class class; | |
3307 | ||
3308 | (*swap_sym_in) (cur_bfd, | |
3309 | ((char *) debug_info->external_sym | |
3310 | + ((fh->isymBase + cur_sdx) | |
3311 | * external_sym_size)), | |
3312 | &sh); | |
3313 | ||
3314 | if (ECOFF_IS_STAB (&sh)) | |
3315 | { | |
3316 | cur_sdx++; | |
3317 | continue; | |
3318 | } | |
3319 | ||
3320 | /* Non absolute static symbols go into the minimal table. */ | |
c5aa993b | 3321 | if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil |
c906108c SS |
3322 | || (sh.index == indexNil |
3323 | && (sh.st != stStatic || sh.sc == scAbs))) | |
3324 | { | |
3325 | /* FIXME, premature? */ | |
3326 | cur_sdx++; | |
3327 | continue; | |
3328 | } | |
3329 | ||
3330 | name = debug_info->ss + fh->issBase + sh.iss; | |
3331 | ||
3332 | switch (sh.sc) | |
3333 | { | |
3334 | case scText: | |
3335 | case scRConst: | |
3336 | /* The value of a stEnd symbol is the displacement from the | |
3337 | corresponding start symbol value, do not relocate it. */ | |
3338 | if (sh.st != stEnd) | |
b8fbeb18 | 3339 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3340 | break; |
3341 | case scData: | |
3342 | case scSData: | |
3343 | case scRData: | |
3344 | case scPData: | |
3345 | case scXData: | |
b8fbeb18 | 3346 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3347 | break; |
3348 | case scBss: | |
3349 | case scSBss: | |
b8fbeb18 | 3350 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3351 | break; |
3352 | } | |
3353 | ||
3354 | switch (sh.st) | |
3355 | { | |
3356 | CORE_ADDR high; | |
3357 | CORE_ADDR procaddr; | |
3358 | int new_sdx; | |
3359 | ||
3360 | case stStaticProc: | |
3361 | prim_record_minimal_symbol_and_info (name, sh.value, | |
3362 | mst_file_text, NULL, | |
b8fbeb18 | 3363 | SECT_OFF_TEXT (objfile), NULL, |
c906108c SS |
3364 | objfile); |
3365 | ||
3366 | /* FALLTHROUGH */ | |
3367 | ||
3368 | case stProc: | |
1fb4c65b JB |
3369 | /* Ignore all parameter symbol records. */ |
3370 | if (sh.index >= hdr->iauxMax) | |
3371 | { | |
3372 | /* Should not happen, but does when cross-compiling | |
3373 | with the MIPS compiler. FIXME -- pull later. */ | |
3374 | index_complaint (name); | |
3375 | new_sdx = cur_sdx + 1; /* Don't skip at all */ | |
3376 | } | |
3377 | else | |
3378 | new_sdx = AUX_GET_ISYM (fh->fBigendian, | |
3379 | (debug_info->external_aux | |
3380 | + fh->iauxBase | |
3381 | + sh.index)); | |
3382 | ||
3383 | if (new_sdx <= cur_sdx) | |
3384 | { | |
3385 | /* This should not happen either... FIXME. */ | |
3386 | complaint (&symfile_complaints, | |
3387 | "bad proc end in aux found from symbol %s", | |
3388 | name); | |
3389 | new_sdx = cur_sdx + 1; /* Don't skip backward */ | |
3390 | } | |
3391 | ||
3392 | /* For stProc symbol records, we need to check the | |
3393 | storage class as well, as only (stProc, scText) | |
3394 | entries represent "real" procedures - See the | |
3395 | Compaq document titled "Object File / Symbol Table | |
3396 | Format Specification" for more information. If the | |
3397 | storage class is not scText, we discard the whole | |
3398 | block of symbol records for this stProc. */ | |
3399 | if (sh.st == stProc && sh.sc != scText) | |
3400 | goto skip; | |
3401 | ||
c906108c SS |
3402 | /* Usually there is a local and a global stProc symbol |
3403 | for a function. This means that the function name | |
3404 | has already been entered into the mimimal symbol table | |
3405 | while processing the global symbols in pass 2 above. | |
3406 | One notable exception is the PROGRAM name from | |
3407 | f77 compiled executables, it is only put out as | |
3408 | local stProc symbol, and a global MAIN__ stProc symbol | |
3409 | points to it. It doesn't matter though, as gdb is | |
3410 | still able to find the PROGRAM name via the partial | |
3411 | symbol table, and the MAIN__ symbol via the minimal | |
3412 | symbol table. */ | |
3413 | if (sh.st == stProc) | |
3414 | add_psymbol_to_list (name, strlen (name), | |
3415 | VAR_NAMESPACE, LOC_BLOCK, | |
3416 | &objfile->global_psymbols, | |
c5aa993b | 3417 | 0, sh.value, psymtab_language, objfile); |
c906108c SS |
3418 | else |
3419 | add_psymbol_to_list (name, strlen (name), | |
3420 | VAR_NAMESPACE, LOC_BLOCK, | |
3421 | &objfile->static_psymbols, | |
c5aa993b | 3422 | 0, sh.value, psymtab_language, objfile); |
c906108c | 3423 | |
c906108c SS |
3424 | procaddr = sh.value; |
3425 | ||
c906108c SS |
3426 | cur_sdx = new_sdx; |
3427 | (*swap_sym_in) (cur_bfd, | |
3428 | ((char *) debug_info->external_sym | |
3429 | + ((fh->isymBase + cur_sdx - 1) | |
3430 | * external_sym_size)), | |
3431 | &sh); | |
3432 | if (sh.st != stEnd) | |
3433 | continue; | |
3434 | ||
3435 | /* Kludge for Irix 5.2 zero fh->adr. */ | |
3436 | if (!relocatable | |
5afc051b JB |
3437 | && (pst->textlow == 0 || procaddr < pst->textlow)) |
3438 | pst->textlow = procaddr; | |
c906108c SS |
3439 | |
3440 | high = procaddr + sh.value; | |
5afc051b JB |
3441 | if (high > pst->texthigh) |
3442 | pst->texthigh = high; | |
c906108c SS |
3443 | continue; |
3444 | ||
3445 | case stStatic: /* Variable */ | |
c5aa993b | 3446 | if (SC_IS_DATA (sh.sc)) |
c906108c SS |
3447 | prim_record_minimal_symbol_and_info (name, sh.value, |
3448 | mst_file_data, NULL, | |
b8fbeb18 | 3449 | SECT_OFF_DATA (objfile), |
c906108c SS |
3450 | NULL, |
3451 | objfile); | |
3452 | else | |
3453 | prim_record_minimal_symbol_and_info (name, sh.value, | |
3454 | mst_file_bss, NULL, | |
b8fbeb18 | 3455 | SECT_OFF_BSS (objfile), |
c906108c SS |
3456 | NULL, |
3457 | objfile); | |
3458 | class = LOC_STATIC; | |
3459 | break; | |
3460 | ||
c5aa993b | 3461 | case stIndirect: /* Irix5 forward declaration */ |
c906108c SS |
3462 | /* Skip forward declarations from Irix5 cc */ |
3463 | goto skip; | |
3464 | ||
c5aa993b | 3465 | case stTypedef: /* Typedef */ |
c906108c SS |
3466 | /* Skip typedefs for forward declarations and opaque |
3467 | structs from alpha and mips cc. */ | |
3468 | if (sh.iss == 0 || has_opaque_xref (fh, &sh)) | |
3469 | goto skip; | |
3470 | class = LOC_TYPEDEF; | |
3471 | break; | |
3472 | ||
3473 | case stConstant: /* Constant decl */ | |
3474 | class = LOC_CONST; | |
3475 | break; | |
3476 | ||
3477 | case stUnion: | |
3478 | case stStruct: | |
3479 | case stEnum: | |
c5aa993b | 3480 | case stBlock: /* { }, str, un, enum */ |
c906108c SS |
3481 | /* Do not create a partial symbol for cc unnamed aggregates |
3482 | and gcc empty aggregates. */ | |
3483 | if ((sh.sc == scInfo | |
c5aa993b | 3484 | || SC_IS_COMMON (sh.sc)) |
c906108c SS |
3485 | && sh.iss != 0 |
3486 | && sh.index != cur_sdx + 2) | |
3487 | { | |
3488 | add_psymbol_to_list (name, strlen (name), | |
3489 | STRUCT_NAMESPACE, LOC_TYPEDEF, | |
3490 | &objfile->static_psymbols, | |
3491 | 0, (CORE_ADDR) 0, | |
3492 | psymtab_language, objfile); | |
3493 | } | |
3494 | handle_psymbol_enumerators (objfile, fh, sh.st, sh.value); | |
3495 | ||
3496 | /* Skip over the block */ | |
3497 | new_sdx = sh.index; | |
3498 | if (new_sdx <= cur_sdx) | |
3499 | { | |
3500 | /* This happens with the Ultrix kernel. */ | |
23136709 KB |
3501 | complaint (&symfile_complaints, |
3502 | "bad aux index at block symbol %s", name); | |
c906108c SS |
3503 | new_sdx = cur_sdx + 1; /* Don't skip backward */ |
3504 | } | |
3505 | cur_sdx = new_sdx; | |
3506 | continue; | |
3507 | ||
3508 | case stFile: /* File headers */ | |
3509 | case stLabel: /* Labels */ | |
3510 | case stEnd: /* Ends of files */ | |
3511 | goto skip; | |
3512 | ||
3513 | case stLocal: /* Local variables */ | |
3514 | /* Normally these are skipped because we skip over | |
3515 | all blocks we see. However, these can occur | |
3516 | as visible symbols in a .h file that contains code. */ | |
3517 | goto skip; | |
3518 | ||
3519 | default: | |
3520 | /* Both complaints are valid: one gives symbol name, | |
3521 | the other the offending symbol type. */ | |
23136709 KB |
3522 | complaint (&symfile_complaints, "unknown local symbol %s", |
3523 | name); | |
3524 | complaint (&symfile_complaints, "with type %d", sh.st); | |
c906108c SS |
3525 | cur_sdx++; |
3526 | continue; | |
3527 | } | |
3528 | /* Use this gdb symbol */ | |
3529 | add_psymbol_to_list (name, strlen (name), | |
3530 | VAR_NAMESPACE, class, | |
3531 | &objfile->static_psymbols, | |
3532 | 0, sh.value, psymtab_language, objfile); | |
3533 | skip: | |
3534 | cur_sdx++; /* Go to next file symbol */ | |
3535 | } | |
3536 | ||
3537 | /* Now do enter the external symbols. */ | |
3538 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; | |
3539 | cur_sdx = fdr_to_pst[f_idx].n_globals; | |
3540 | PST_PRIVATE (save_pst)->extern_count = cur_sdx; | |
3541 | PST_PRIVATE (save_pst)->extern_tab = ext_ptr; | |
3542 | for (; --cur_sdx >= 0; ext_ptr++) | |
3543 | { | |
3544 | enum address_class class; | |
3545 | SYMR *psh; | |
3546 | char *name; | |
3547 | CORE_ADDR svalue; | |
3548 | ||
3549 | if (ext_ptr->ifd != f_idx) | |
e1e9e218 | 3550 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
3551 | psh = &ext_ptr->asym; |
3552 | ||
3553 | /* Do not add undefined symbols to the partial symbol table. */ | |
c5aa993b | 3554 | if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil) |
c906108c SS |
3555 | continue; |
3556 | ||
3557 | svalue = psh->value; | |
3558 | switch (psh->sc) | |
3559 | { | |
3560 | case scText: | |
3561 | case scRConst: | |
b8fbeb18 | 3562 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3563 | break; |
3564 | case scData: | |
3565 | case scSData: | |
3566 | case scRData: | |
3567 | case scPData: | |
3568 | case scXData: | |
b8fbeb18 | 3569 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3570 | break; |
3571 | case scBss: | |
3572 | case scSBss: | |
b8fbeb18 | 3573 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3574 | break; |
3575 | } | |
3576 | ||
3577 | switch (psh->st) | |
3578 | { | |
3579 | case stNil: | |
3580 | /* These are generated for static symbols in .o files, | |
3581 | ignore them. */ | |
3582 | continue; | |
3583 | case stProc: | |
3584 | case stStaticProc: | |
3585 | /* External procedure symbols have been entered | |
3586 | into the minimal symbol table in pass 2 above. | |
3587 | Ignore them, as parse_external will ignore them too. */ | |
3588 | continue; | |
3589 | case stLabel: | |
3590 | class = LOC_LABEL; | |
3591 | break; | |
3592 | default: | |
23136709 | 3593 | unknown_ext_complaint (debug_info->ssext + psh->iss); |
c906108c SS |
3594 | /* Fall through, pretend it's global. */ |
3595 | case stGlobal: | |
3596 | /* Global common symbols are resolved by the runtime loader, | |
3597 | ignore them. */ | |
c5aa993b | 3598 | if (SC_IS_COMMON (psh->sc)) |
c906108c SS |
3599 | continue; |
3600 | ||
3601 | class = LOC_STATIC; | |
3602 | break; | |
3603 | } | |
3604 | name = debug_info->ssext + psh->iss; | |
3605 | add_psymbol_to_list (name, strlen (name), | |
3606 | VAR_NAMESPACE, class, | |
3607 | &objfile->global_psymbols, | |
3608 | 0, svalue, | |
3609 | psymtab_language, objfile); | |
3610 | } | |
3611 | } | |
3612 | ||
3613 | /* Link pst to FDR. end_psymtab returns NULL if the psymtab was | |
c5aa993b | 3614 | empty and put on the free list. */ |
c906108c | 3615 | fdr_to_pst[f_idx].pst = end_psymtab (save_pst, |
c5aa993b | 3616 | psymtab_include_list, includes_used, |
5afc051b | 3617 | -1, save_pst->texthigh, |
c5aa993b | 3618 | dependency_list, dependencies_used, textlow_not_set); |
c906108c SS |
3619 | includes_used = 0; |
3620 | dependencies_used = 0; | |
3621 | ||
5afc051b JB |
3622 | if (objfile->ei.entry_point >= save_pst->textlow && |
3623 | objfile->ei.entry_point < save_pst->texthigh) | |
c906108c | 3624 | { |
5afc051b JB |
3625 | objfile->ei.entry_file_lowpc = save_pst->textlow; |
3626 | objfile->ei.entry_file_highpc = save_pst->texthigh; | |
c906108c SS |
3627 | } |
3628 | ||
3629 | /* The objfile has its functions reordered if this partial symbol | |
c5aa993b JM |
3630 | table overlaps any other partial symbol table. |
3631 | We cannot assume a reordered objfile if a partial symbol table | |
3632 | is contained within another partial symbol table, as partial symbol | |
3633 | tables for include files with executable code are contained | |
3634 | within the partial symbol table for the including source file, | |
3635 | and we do not want to flag the objfile reordered for these cases. | |
3636 | ||
3637 | This strategy works well for Irix-5.2 shared libraries, but we | |
3638 | might have to use a more elaborate (and slower) algorithm for | |
3639 | other cases. */ | |
c906108c SS |
3640 | save_pst = fdr_to_pst[f_idx].pst; |
3641 | if (save_pst != NULL | |
5afc051b | 3642 | && save_pst->textlow != 0 |
c906108c SS |
3643 | && !(objfile->flags & OBJF_REORDERED)) |
3644 | { | |
3645 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
c5aa993b JM |
3646 | { |
3647 | if (save_pst != pst | |
5afc051b JB |
3648 | && save_pst->textlow >= pst->textlow |
3649 | && save_pst->textlow < pst->texthigh | |
3650 | && save_pst->texthigh > pst->texthigh) | |
c5aa993b JM |
3651 | { |
3652 | objfile->flags |= OBJF_REORDERED; | |
3653 | break; | |
3654 | } | |
3655 | } | |
c906108c SS |
3656 | } |
3657 | } | |
3658 | ||
3659 | /* Now scan the FDRs for dependencies */ | |
3660 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) | |
3661 | { | |
3662 | fh = f_idx + debug_info->fdr; | |
3663 | pst = fdr_to_pst[f_idx].pst; | |
3664 | ||
c5aa993b | 3665 | if (pst == (struct partial_symtab *) NULL) |
c906108c SS |
3666 | continue; |
3667 | ||
3668 | /* This should catch stabs-in-ecoff. */ | |
3669 | if (fh->crfd <= 1) | |
3670 | continue; | |
3671 | ||
3672 | /* Skip the first file indirect entry as it is a self dependency | |
c5aa993b | 3673 | for source files or a reverse .h -> .c dependency for header files. */ |
c906108c SS |
3674 | pst->number_of_dependencies = 0; |
3675 | pst->dependencies = | |
3676 | ((struct partial_symtab **) | |
3677 | obstack_alloc (&objfile->psymbol_obstack, | |
3678 | ((fh->crfd - 1) | |
3679 | * sizeof (struct partial_symtab *)))); | |
3680 | for (s_idx = 1; s_idx < fh->crfd; s_idx++) | |
3681 | { | |
3682 | RFDT rh; | |
3683 | ||
3684 | (*swap_rfd_in) (cur_bfd, | |
3685 | ((char *) debug_info->external_rfd | |
3686 | + (fh->rfdBase + s_idx) * external_rfd_size), | |
3687 | &rh); | |
3688 | if (rh < 0 || rh >= hdr->ifdMax) | |
3689 | { | |
23136709 | 3690 | complaint (&symfile_complaints, "bad file number %ld", rh); |
c906108c SS |
3691 | continue; |
3692 | } | |
3693 | ||
3694 | /* Skip self dependencies of header files. */ | |
3695 | if (rh == f_idx) | |
3696 | continue; | |
3697 | ||
3698 | /* Do not add to dependeny list if psymtab was empty. */ | |
c5aa993b | 3699 | if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL) |
c906108c SS |
3700 | continue; |
3701 | pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst; | |
3702 | } | |
3703 | } | |
3704 | ||
3705 | /* Remove the dummy psymtab created for -O3 images above, if it is | |
3706 | still empty, to enable the detection of stripped executables. */ | |
3707 | if (objfile->psymtabs->next == NULL | |
3708 | && objfile->psymtabs->number_of_dependencies == 0 | |
3709 | && objfile->psymtabs->n_global_syms == 0 | |
3710 | && objfile->psymtabs->n_static_syms == 0) | |
3711 | objfile->psymtabs = NULL; | |
3712 | do_cleanups (old_chain); | |
3713 | } | |
3714 | ||
3715 | /* If the current psymbol has an enumerated type, we need to add | |
3716 | all the the enum constants to the partial symbol table. */ | |
3717 | ||
3718 | static void | |
fba45db2 KB |
3719 | handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype, |
3720 | CORE_ADDR svalue) | |
c906108c SS |
3721 | { |
3722 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
12b9c64f | 3723 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c | 3724 | char *ext_sym = ((char *) debug_info->external_sym |
c5aa993b | 3725 | + ((fh->isymBase + cur_sdx + 1) * external_sym_size)); |
c906108c SS |
3726 | SYMR sh; |
3727 | TIR tir; | |
3728 | ||
3729 | switch (stype) | |
3730 | { | |
3731 | case stEnum: | |
3732 | break; | |
3733 | ||
3734 | case stBlock: | |
3735 | /* It is an enumerated type if the next symbol entry is a stMember | |
c5aa993b JM |
3736 | and its auxiliary index is indexNil or its auxiliary entry |
3737 | is a plain btNil or btVoid. | |
3738 | Alpha cc -migrate enums are recognized by a zero index and | |
3739 | a zero symbol value. | |
3740 | DU 4.0 cc enums are recognized by a member type of btEnum without | |
3741 | qualifiers and a zero symbol value. */ | |
c906108c SS |
3742 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); |
3743 | if (sh.st != stMember) | |
3744 | return; | |
3745 | ||
3746 | if (sh.index == indexNil | |
3747 | || (sh.index == 0 && svalue == 0)) | |
3748 | break; | |
3749 | (*debug_swap->swap_tir_in) (fh->fBigendian, | |
3750 | &(debug_info->external_aux | |
3751 | + fh->iauxBase + sh.index)->a_ti, | |
3752 | &tir); | |
3753 | if ((tir.bt != btNil | |
3754 | && tir.bt != btVoid | |
3755 | && (tir.bt != btEnum || svalue != 0)) | |
3756 | || tir.tq0 != tqNil) | |
3757 | return; | |
3758 | break; | |
3759 | ||
3760 | default: | |
3761 | return; | |
3762 | } | |
3763 | ||
3764 | for (;;) | |
3765 | { | |
3766 | char *name; | |
3767 | ||
3768 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); | |
3769 | if (sh.st != stMember) | |
3770 | break; | |
3771 | name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
3772 | ||
3773 | /* Note that the value doesn't matter for enum constants | |
c5aa993b | 3774 | in psymtabs, just in symtabs. */ |
c906108c SS |
3775 | add_psymbol_to_list (name, strlen (name), |
3776 | VAR_NAMESPACE, LOC_CONST, | |
3777 | &objfile->static_psymbols, 0, | |
3778 | (CORE_ADDR) 0, psymtab_language, objfile); | |
3779 | ext_sym += external_sym_size; | |
3780 | } | |
3781 | } | |
3782 | ||
0e7e8d51 KB |
3783 | /* Get the next symbol. OBJFILE is unused. */ |
3784 | ||
c906108c | 3785 | static char * |
0e7e8d51 | 3786 | mdebug_next_symbol_text (struct objfile *objfile) |
c906108c SS |
3787 | { |
3788 | SYMR sh; | |
3789 | ||
3790 | cur_sdx++; | |
3791 | (*debug_swap->swap_sym_in) (cur_bfd, | |
3792 | ((char *) debug_info->external_sym | |
3793 | + ((cur_fdr->isymBase + cur_sdx) | |
3794 | * debug_swap->external_sym_size)), | |
3795 | &sh); | |
3796 | return debug_info->ss + cur_fdr->issBase + sh.iss; | |
3797 | } | |
3798 | ||
3799 | /* Ancillary function to psymtab_to_symtab(). Does all the work | |
3800 | for turning the partial symtab PST into a symtab, recurring | |
3801 | first on all dependent psymtabs. The argument FILENAME is | |
3802 | only passed so we can see in debug stack traces what file | |
3803 | is being read. | |
3804 | ||
3805 | This function has a split personality, based on whether the | |
3806 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. | |
3807 | The flow of control and even the memory allocation differs. FIXME. */ | |
3808 | ||
3809 | static void | |
fba45db2 | 3810 | psymtab_to_symtab_1 (struct partial_symtab *pst, char *filename) |
c906108c SS |
3811 | { |
3812 | bfd_size_type external_sym_size; | |
3813 | bfd_size_type external_pdr_size; | |
12b9c64f AO |
3814 | void (*swap_sym_in) (bfd *, void *, SYMR *); |
3815 | void (*swap_pdr_in) (bfd *, void *, PDR *); | |
c906108c | 3816 | int i; |
16db6055 | 3817 | struct symtab *st = NULL; |
c906108c SS |
3818 | FDR *fh; |
3819 | struct linetable *lines; | |
3820 | CORE_ADDR lowest_pdr_addr = 0; | |
16db6055 | 3821 | int last_symtab_ended = 0; |
c906108c SS |
3822 | |
3823 | if (pst->readin) | |
3824 | return; | |
3825 | pst->readin = 1; | |
3826 | ||
3827 | /* Read in all partial symbtabs on which this one is dependent. | |
3828 | NOTE that we do have circular dependencies, sigh. We solved | |
3829 | that by setting pst->readin before this point. */ | |
3830 | ||
3831 | for (i = 0; i < pst->number_of_dependencies; i++) | |
3832 | if (!pst->dependencies[i]->readin) | |
3833 | { | |
3834 | /* Inform about additional files to be read in. */ | |
3835 | if (info_verbose) | |
3836 | { | |
3837 | fputs_filtered (" ", gdb_stdout); | |
3838 | wrap_here (""); | |
3839 | fputs_filtered ("and ", gdb_stdout); | |
3840 | wrap_here (""); | |
3841 | printf_filtered ("%s...", | |
3842 | pst->dependencies[i]->filename); | |
3843 | wrap_here (""); /* Flush output */ | |
3844 | gdb_flush (gdb_stdout); | |
3845 | } | |
3846 | /* We only pass the filename for debug purposes */ | |
3847 | psymtab_to_symtab_1 (pst->dependencies[i], | |
3848 | pst->dependencies[i]->filename); | |
3849 | } | |
3850 | ||
3851 | /* Do nothing if this is a dummy psymtab. */ | |
3852 | ||
3853 | if (pst->n_global_syms == 0 && pst->n_static_syms == 0 | |
5afc051b | 3854 | && pst->textlow == 0 && pst->texthigh == 0) |
c906108c SS |
3855 | return; |
3856 | ||
3857 | /* Now read the symbols for this symtab */ | |
3858 | ||
3859 | cur_bfd = CUR_BFD (pst); | |
3860 | debug_swap = DEBUG_SWAP (pst); | |
3861 | debug_info = DEBUG_INFO (pst); | |
3862 | pending_list = PENDING_LIST (pst); | |
3863 | external_sym_size = debug_swap->external_sym_size; | |
3864 | external_pdr_size = debug_swap->external_pdr_size; | |
3865 | swap_sym_in = debug_swap->swap_sym_in; | |
3866 | swap_pdr_in = debug_swap->swap_pdr_in; | |
3867 | current_objfile = pst->objfile; | |
3868 | cur_fd = FDR_IDX (pst); | |
3869 | fh = ((cur_fd == -1) | |
3870 | ? (FDR *) NULL | |
3871 | : debug_info->fdr + cur_fd); | |
3872 | cur_fdr = fh; | |
3873 | ||
3874 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ | |
3875 | processing_gcc_compilation = 0; | |
3876 | if (fh != (FDR *) NULL && fh->csym >= 2) | |
3877 | { | |
3878 | SYMR sh; | |
3879 | ||
3880 | (*swap_sym_in) (cur_bfd, | |
3881 | ((char *) debug_info->external_sym | |
3882 | + (fh->isymBase + 1) * external_sym_size), | |
3883 | &sh); | |
3884 | if (STREQ (debug_info->ss + fh->issBase + sh.iss, | |
3885 | stabs_symbol)) | |
3886 | { | |
3887 | /* We indicate that this is a GCC compilation so that certain | |
3888 | features will be enabled in stabsread/dbxread. */ | |
3889 | processing_gcc_compilation = 2; | |
3890 | } | |
3891 | } | |
3892 | ||
3893 | if (processing_gcc_compilation != 0) | |
3894 | { | |
3895 | ||
3896 | /* This symbol table contains stabs-in-ecoff entries. */ | |
3897 | ||
3898 | /* Parse local symbols first */ | |
3899 | ||
3900 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */ | |
3901 | { | |
3902 | current_objfile = NULL; | |
3903 | return; | |
3904 | } | |
3905 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
3906 | { | |
3907 | SYMR sh; | |
3908 | char *name; | |
3909 | CORE_ADDR valu; | |
3910 | ||
3911 | (*swap_sym_in) (cur_bfd, | |
3912 | (((char *) debug_info->external_sym) | |
3913 | + (fh->isymBase + cur_sdx) * external_sym_size), | |
3914 | &sh); | |
3915 | name = debug_info->ss + fh->issBase + sh.iss; | |
3916 | valu = sh.value; | |
3917 | /* XXX This is a hack. It will go away! */ | |
3918 | if (ECOFF_IS_STAB (&sh) || (name[0] == '#')) | |
3919 | { | |
3920 | int type_code = ECOFF_UNMARK_STAB (sh.index); | |
3921 | ||
3922 | /* We should never get non N_STAB symbols here, but they | |
c5aa993b JM |
3923 | should be harmless, so keep process_one_symbol from |
3924 | complaining about them. */ | |
c906108c SS |
3925 | if (type_code & N_STAB) |
3926 | { | |
16db6055 EZ |
3927 | /* If we found a trailing N_SO with no name, process |
3928 | it here instead of in process_one_symbol, so we | |
3929 | can keep a handle to its symtab. The symtab | |
3930 | would otherwise be ended twice, once in | |
3931 | process_one_symbol, and once after this loop. */ | |
3932 | if (type_code == N_SO | |
3933 | && last_source_file | |
3934 | && previous_stab_code != (unsigned char) N_SO | |
3935 | && *name == '\000') | |
3936 | { | |
3937 | valu += ANOFFSET (pst->section_offsets, | |
3938 | SECT_OFF_TEXT (pst->objfile)); | |
3939 | previous_stab_code = N_SO; | |
3940 | st = end_symtab (valu, pst->objfile, | |
3941 | SECT_OFF_TEXT (pst->objfile)); | |
3942 | end_stabs (); | |
3943 | last_symtab_ended = 1; | |
3944 | } | |
3945 | else | |
3946 | { | |
3947 | last_symtab_ended = 0; | |
3948 | process_one_symbol (type_code, 0, valu, name, | |
3949 | pst->section_offsets, pst->objfile); | |
3950 | } | |
c906108c SS |
3951 | } |
3952 | /* Similarly a hack. */ | |
3953 | else if (name[0] == '#') | |
3954 | { | |
3955 | process_one_symbol (N_SLINE, 0, valu, name, | |
3956 | pst->section_offsets, pst->objfile); | |
3957 | } | |
3958 | if (type_code == N_FUN) | |
3959 | { | |
3960 | /* Make up special symbol to contain | |
3961 | procedure specific info */ | |
3962 | struct mips_extra_func_info *e = | |
c5aa993b JM |
3963 | ((struct mips_extra_func_info *) |
3964 | obstack_alloc (¤t_objfile->symbol_obstack, | |
3965 | sizeof (struct mips_extra_func_info))); | |
c906108c SS |
3966 | struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME); |
3967 | ||
12b9c64f | 3968 | memset (e, 0, sizeof (struct mips_extra_func_info)); |
c906108c SS |
3969 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; |
3970 | SYMBOL_CLASS (s) = LOC_CONST; | |
3971 | SYMBOL_TYPE (s) = mdebug_type_void; | |
3972 | SYMBOL_VALUE (s) = (long) e; | |
3973 | e->pdr.framereg = -1; | |
3974 | add_symbol_to_list (s, &local_symbols); | |
3975 | } | |
3976 | } | |
3977 | else if (sh.st == stLabel) | |
3978 | { | |
3979 | if (sh.index == indexNil) | |
3980 | { | |
3981 | /* This is what the gcc2_compiled and __gnu_compiled_* | |
3982 | show up as. So don't complain. */ | |
3983 | ; | |
3984 | } | |
3985 | else | |
3986 | { | |
3987 | /* Handle encoded stab line number. */ | |
b8fbeb18 | 3988 | valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)); |
c906108c SS |
3989 | record_line (current_subfile, sh.index, valu); |
3990 | } | |
3991 | } | |
3992 | else if (sh.st == stProc || sh.st == stStaticProc | |
3993 | || sh.st == stStatic || sh.st == stEnd) | |
3994 | /* These are generated by gcc-2.x, do not complain */ | |
3995 | ; | |
3996 | else | |
23136709 | 3997 | complaint (&symfile_complaints, "unknown stabs symbol %s", name); |
c906108c | 3998 | } |
16db6055 EZ |
3999 | |
4000 | if (! last_symtab_ended) | |
4001 | { | |
5afc051b | 4002 | st = end_symtab (pst->texthigh, pst->objfile, SECT_OFF_TEXT (pst->objfile)); |
16db6055 EZ |
4003 | end_stabs (); |
4004 | } | |
c906108c SS |
4005 | |
4006 | /* Sort the symbol table now, we are done adding symbols to it. | |
c5aa993b | 4007 | We must do this before parse_procedure calls lookup_symbol. */ |
c906108c SS |
4008 | sort_symtab_syms (st); |
4009 | ||
4010 | /* There used to be a call to sort_blocks here, but this should not | |
c5aa993b JM |
4011 | be necessary for stabs symtabs. And as sort_blocks modifies the |
4012 | start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK, | |
4013 | it did the wrong thing if the first procedure in a file was | |
4014 | generated via asm statements. */ | |
c906108c SS |
4015 | |
4016 | /* Fill in procedure info next. */ | |
4017 | if (fh->cpd > 0) | |
4018 | { | |
4019 | PDR *pr_block; | |
4020 | struct cleanup *old_chain; | |
4021 | char *pdr_ptr; | |
4022 | char *pdr_end; | |
4023 | PDR *pdr_in; | |
4024 | PDR *pdr_in_end; | |
4025 | ||
4026 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
b8c9b27d | 4027 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4028 | |
4029 | pdr_ptr = ((char *) debug_info->external_pdr | |
4030 | + fh->ipdFirst * external_pdr_size); | |
4031 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4032 | pdr_in = pr_block; | |
4033 | for (; | |
4034 | pdr_ptr < pdr_end; | |
4035 | pdr_ptr += external_pdr_size, pdr_in++) | |
4036 | { | |
4037 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4038 | ||
4039 | /* Determine lowest PDR address, the PDRs are not always | |
c5aa993b | 4040 | sorted. */ |
c906108c SS |
4041 | if (pdr_in == pr_block) |
4042 | lowest_pdr_addr = pdr_in->adr; | |
4043 | else if (pdr_in->adr < lowest_pdr_addr) | |
4044 | lowest_pdr_addr = pdr_in->adr; | |
4045 | } | |
4046 | ||
4047 | pdr_in = pr_block; | |
4048 | pdr_in_end = pdr_in + fh->cpd; | |
4049 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4050 | parse_procedure (pdr_in, st, pst); | |
4051 | ||
4052 | do_cleanups (old_chain); | |
4053 | } | |
4054 | } | |
4055 | else | |
4056 | { | |
4057 | /* This symbol table contains ordinary ecoff entries. */ | |
4058 | ||
4059 | int f_max; | |
4060 | int maxlines; | |
4061 | EXTR *ext_ptr; | |
4062 | ||
4063 | /* How many symbols will we need */ | |
4064 | /* FIXME, this does not count enum values. */ | |
4065 | f_max = pst->n_global_syms + pst->n_static_syms; | |
4066 | if (fh == 0) | |
4067 | { | |
4068 | maxlines = 0; | |
4069 | st = new_symtab ("unknown", f_max, 0, pst->objfile); | |
4070 | } | |
4071 | else | |
4072 | { | |
4073 | f_max += fh->csym + fh->cpd; | |
4074 | maxlines = 2 * fh->cline; | |
4075 | st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile); | |
4076 | ||
4077 | /* The proper language was already determined when building | |
4078 | the psymtab, use it. */ | |
4079 | st->language = PST_PRIVATE (pst)->pst_language; | |
4080 | } | |
4081 | ||
4082 | psymtab_language = st->language; | |
4083 | ||
4084 | lines = LINETABLE (st); | |
4085 | ||
4086 | /* Get a new lexical context */ | |
4087 | ||
4088 | push_parse_stack (); | |
4089 | top_stack->cur_st = st; | |
4090 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st), | |
4091 | STATIC_BLOCK); | |
5afc051b | 4092 | BLOCK_START (top_stack->cur_block) = pst->textlow; |
c906108c SS |
4093 | BLOCK_END (top_stack->cur_block) = 0; |
4094 | top_stack->blocktype = stFile; | |
4095 | top_stack->maxsyms = 2 * f_max; | |
4096 | top_stack->cur_type = 0; | |
4097 | top_stack->procadr = 0; | |
4098 | top_stack->numargs = 0; | |
4099 | found_ecoff_debugging_info = 0; | |
4100 | ||
4101 | if (fh) | |
4102 | { | |
4103 | char *sym_ptr; | |
4104 | char *sym_end; | |
4105 | ||
4106 | /* Parse local symbols first */ | |
4107 | sym_ptr = ((char *) debug_info->external_sym | |
4108 | + fh->isymBase * external_sym_size); | |
4109 | sym_end = sym_ptr + fh->csym * external_sym_size; | |
4110 | while (sym_ptr < sym_end) | |
4111 | { | |
4112 | SYMR sh; | |
4113 | int c; | |
4114 | ||
4115 | (*swap_sym_in) (cur_bfd, sym_ptr, &sh); | |
4116 | c = parse_symbol (&sh, | |
4117 | debug_info->external_aux + fh->iauxBase, | |
b8fbeb18 | 4118 | sym_ptr, fh->fBigendian, pst->section_offsets, pst->objfile); |
c906108c SS |
4119 | sym_ptr += c * external_sym_size; |
4120 | } | |
4121 | ||
4122 | /* Linenumbers. At the end, check if we can save memory. | |
4123 | parse_lines has to look ahead an arbitrary number of PDR | |
4124 | structures, so we swap them all first. */ | |
4125 | if (fh->cpd > 0) | |
4126 | { | |
4127 | PDR *pr_block; | |
4128 | struct cleanup *old_chain; | |
4129 | char *pdr_ptr; | |
4130 | char *pdr_end; | |
4131 | PDR *pdr_in; | |
4132 | PDR *pdr_in_end; | |
4133 | ||
4134 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
4135 | ||
b8c9b27d | 4136 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4137 | |
4138 | pdr_ptr = ((char *) debug_info->external_pdr | |
4139 | + fh->ipdFirst * external_pdr_size); | |
4140 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4141 | pdr_in = pr_block; | |
4142 | for (; | |
4143 | pdr_ptr < pdr_end; | |
4144 | pdr_ptr += external_pdr_size, pdr_in++) | |
4145 | { | |
4146 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4147 | ||
4148 | /* Determine lowest PDR address, the PDRs are not always | |
4149 | sorted. */ | |
4150 | if (pdr_in == pr_block) | |
4151 | lowest_pdr_addr = pdr_in->adr; | |
4152 | else if (pdr_in->adr < lowest_pdr_addr) | |
4153 | lowest_pdr_addr = pdr_in->adr; | |
4154 | } | |
4155 | ||
4156 | parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr); | |
4157 | if (lines->nitems < fh->cline) | |
4158 | lines = shrink_linetable (lines); | |
4159 | ||
4160 | /* Fill in procedure info next. */ | |
4161 | pdr_in = pr_block; | |
4162 | pdr_in_end = pdr_in + fh->cpd; | |
4163 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4164 | parse_procedure (pdr_in, 0, pst); | |
4165 | ||
4166 | do_cleanups (old_chain); | |
4167 | } | |
4168 | } | |
4169 | ||
4170 | LINETABLE (st) = lines; | |
4171 | ||
4172 | /* .. and our share of externals. | |
c5aa993b JM |
4173 | XXX use the global list to speed up things here. how? |
4174 | FIXME, Maybe quit once we have found the right number of ext's? */ | |
c906108c SS |
4175 | top_stack->cur_st = st; |
4176 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
4177 | GLOBAL_BLOCK); | |
4178 | top_stack->blocktype = stFile; | |
4179 | top_stack->maxsyms | |
4180 | = (debug_info->symbolic_header.isymMax | |
4181 | + debug_info->symbolic_header.ipdMax | |
4182 | + debug_info->symbolic_header.iextMax); | |
4183 | ||
4184 | ext_ptr = PST_PRIVATE (pst)->extern_tab; | |
4185 | for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) | |
b8fbeb18 | 4186 | parse_external (ext_ptr, fh->fBigendian, pst->section_offsets, pst->objfile); |
c906108c SS |
4187 | |
4188 | /* If there are undefined symbols, tell the user. | |
c5aa993b JM |
4189 | The alpha has an undefined symbol for every symbol that is |
4190 | from a shared library, so tell the user only if verbose is on. */ | |
c906108c SS |
4191 | if (info_verbose && n_undef_symbols) |
4192 | { | |
4193 | printf_filtered ("File %s contains %d unresolved references:", | |
4194 | st->filename, n_undef_symbols); | |
4195 | printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n", | |
4196 | n_undef_vars, n_undef_procs, n_undef_labels); | |
4197 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; | |
4198 | ||
4199 | } | |
4200 | pop_parse_stack (); | |
4201 | ||
4202 | st->primary = 1; | |
4203 | ||
c5aa993b | 4204 | /* Sort the symbol table now, we are done adding symbols to it. */ |
c906108c SS |
4205 | sort_symtab_syms (st); |
4206 | ||
4207 | sort_blocks (st); | |
4208 | } | |
4209 | ||
4210 | /* Now link the psymtab and the symtab. */ | |
4211 | pst->symtab = st; | |
4212 | ||
4213 | current_objfile = NULL; | |
4214 | } | |
4215 | \f | |
4216 | /* Ancillary parsing procedures. */ | |
4217 | ||
4218 | /* Return 1 if the symbol pointed to by SH has a cross reference | |
4219 | to an opaque aggregate type, else 0. */ | |
4220 | ||
4221 | static int | |
fba45db2 | 4222 | has_opaque_xref (FDR *fh, SYMR *sh) |
c906108c SS |
4223 | { |
4224 | TIR tir; | |
4225 | union aux_ext *ax; | |
4226 | RNDXR rn[1]; | |
4227 | unsigned int rf; | |
4228 | ||
4229 | if (sh->index == indexNil) | |
4230 | return 0; | |
4231 | ||
4232 | ax = debug_info->external_aux + fh->iauxBase + sh->index; | |
4233 | (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir); | |
4234 | if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum) | |
4235 | return 0; | |
4236 | ||
4237 | ax++; | |
4238 | (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn); | |
4239 | if (rn->rfd == 0xfff) | |
4240 | rf = AUX_GET_ISYM (fh->fBigendian, ax + 1); | |
4241 | else | |
4242 | rf = rn->rfd; | |
4243 | if (rf != -1) | |
4244 | return 0; | |
4245 | return 1; | |
4246 | } | |
4247 | ||
4248 | /* Lookup the type at relative index RN. Return it in TPP | |
4249 | if found and in any event come up with its name PNAME. | |
4250 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). | |
4251 | Return value says how many aux symbols we ate. */ | |
4252 | ||
4253 | static int | |
fba45db2 KB |
4254 | cross_ref (int fd, union aux_ext *ax, struct type **tpp, enum type_code type_code, /* Use to alloc new type if none is found. */ |
4255 | char **pname, int bigend, char *sym_name) | |
c906108c SS |
4256 | { |
4257 | RNDXR rn[1]; | |
4258 | unsigned int rf; | |
4259 | int result = 1; | |
4260 | FDR *fh; | |
4261 | char *esh; | |
4262 | SYMR sh; | |
4263 | int xref_fd; | |
4264 | struct mdebug_pending *pend; | |
4265 | ||
c5aa993b | 4266 | *tpp = (struct type *) NULL; |
c906108c SS |
4267 | |
4268 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
4269 | ||
4270 | /* Escape index means 'the next one' */ | |
4271 | if (rn->rfd == 0xfff) | |
4272 | { | |
4273 | result++; | |
4274 | rf = AUX_GET_ISYM (bigend, ax + 1); | |
4275 | } | |
4276 | else | |
4277 | { | |
4278 | rf = rn->rfd; | |
4279 | } | |
4280 | ||
4281 | /* mips cc uses a rf of -1 for opaque struct definitions. | |
4282 | Set TYPE_FLAG_STUB for these types so that check_typedef will | |
4283 | resolve them if the struct gets defined in another compilation unit. */ | |
4284 | if (rf == -1) | |
4285 | { | |
4286 | *pname = "<undefined>"; | |
0b3d7c6d | 4287 | *tpp = init_type (type_code, 0, TYPE_FLAG_STUB, (char *) NULL, current_objfile); |
c906108c SS |
4288 | return result; |
4289 | } | |
4290 | ||
4291 | /* mips cc uses an escaped rn->index of 0 for struct return types | |
4292 | of procedures that were compiled without -g. These will always remain | |
4293 | undefined. */ | |
4294 | if (rn->rfd == 0xfff && rn->index == 0) | |
4295 | { | |
4296 | *pname = "<undefined>"; | |
4297 | return result; | |
4298 | } | |
4299 | ||
4300 | /* Find the relative file descriptor and the symbol in it. */ | |
4301 | fh = get_rfd (fd, rf); | |
4302 | xref_fd = fh - debug_info->fdr; | |
4303 | ||
4304 | if (rn->index >= fh->csym) | |
4305 | { | |
4306 | /* File indirect entry is corrupt. */ | |
4307 | *pname = "<illegal>"; | |
23136709 | 4308 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4309 | return result; |
4310 | } | |
4311 | ||
4312 | /* If we have processed this symbol then we left a forwarding | |
4313 | pointer to the type in the pending list. If not, we`ll put | |
4314 | it in a list of pending types, to be processed later when | |
4315 | the file will be. In any event, we collect the name for the | |
4316 | type here. */ | |
4317 | ||
4318 | esh = ((char *) debug_info->external_sym | |
4319 | + ((fh->isymBase + rn->index) | |
4320 | * debug_swap->external_sym_size)); | |
4321 | (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh); | |
4322 | ||
4323 | /* Make sure that this type of cross reference can be handled. */ | |
4324 | if ((sh.sc != scInfo | |
4325 | || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect | |
4326 | && sh.st != stStruct && sh.st != stUnion | |
4327 | && sh.st != stEnum)) | |
c5aa993b | 4328 | && (sh.st != stBlock || !SC_IS_COMMON (sh.sc))) |
c906108c SS |
4329 | { |
4330 | /* File indirect entry is corrupt. */ | |
4331 | *pname = "<illegal>"; | |
23136709 | 4332 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4333 | return result; |
4334 | } | |
4335 | ||
4336 | *pname = debug_info->ss + fh->issBase + sh.iss; | |
4337 | ||
4338 | pend = is_pending_symbol (fh, esh); | |
4339 | if (pend) | |
4340 | *tpp = pend->t; | |
4341 | else | |
4342 | { | |
4343 | /* We have not yet seen this type. */ | |
4344 | ||
4345 | if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect) | |
4346 | { | |
4347 | TIR tir; | |
4348 | ||
4349 | /* alpha cc puts out a stTypedef with a sh.iss of zero for | |
4350 | two cases: | |
4351 | a) forward declarations of structs/unions/enums which are not | |
c5aa993b JM |
4352 | defined in this compilation unit. |
4353 | For these the type will be void. This is a bad design decision | |
4354 | as cross referencing across compilation units is impossible | |
4355 | due to the missing name. | |
c906108c | 4356 | b) forward declarations of structs/unions/enums/typedefs which |
c5aa993b JM |
4357 | are defined later in this file or in another file in the same |
4358 | compilation unit. Irix5 cc uses a stIndirect symbol for this. | |
4359 | Simply cross reference those again to get the true type. | |
c906108c SS |
4360 | The forward references are not entered in the pending list and |
4361 | in the symbol table. */ | |
4362 | ||
4363 | (*debug_swap->swap_tir_in) (bigend, | |
4364 | &(debug_info->external_aux | |
4365 | + fh->iauxBase + sh.index)->a_ti, | |
4366 | &tir); | |
4367 | if (tir.tq0 != tqNil) | |
23136709 KB |
4368 | complaint (&symfile_complaints, |
4369 | "illegal tq0 in forward typedef for %s", sym_name); | |
c906108c SS |
4370 | switch (tir.bt) |
4371 | { | |
4372 | case btVoid: | |
4373 | *tpp = init_type (type_code, 0, 0, (char *) NULL, | |
4374 | current_objfile); | |
c5aa993b | 4375 | *pname = "<undefined>"; |
c906108c SS |
4376 | break; |
4377 | ||
4378 | case btStruct: | |
4379 | case btUnion: | |
4380 | case btEnum: | |
4381 | cross_ref (xref_fd, | |
4382 | (debug_info->external_aux | |
4383 | + fh->iauxBase + sh.index + 1), | |
4384 | tpp, type_code, pname, | |
4385 | fh->fBigendian, sym_name); | |
4386 | break; | |
4387 | ||
4388 | case btTypedef: | |
4389 | /* Follow a forward typedef. This might recursively | |
c5aa993b JM |
4390 | call cross_ref till we get a non typedef'ed type. |
4391 | FIXME: This is not correct behaviour, but gdb currently | |
4392 | cannot handle typedefs without type copying. Type | |
4393 | copying is impossible as we might have mutual forward | |
4394 | references between two files and the copied type would not | |
4395 | get filled in when we later parse its definition. */ | |
c906108c SS |
4396 | *tpp = parse_type (xref_fd, |
4397 | debug_info->external_aux + fh->iauxBase, | |
4398 | sh.index, | |
c5aa993b | 4399 | (int *) NULL, |
c906108c SS |
4400 | fh->fBigendian, |
4401 | debug_info->ss + fh->issBase + sh.iss); | |
4402 | add_pending (fh, esh, *tpp); | |
4403 | break; | |
4404 | ||
4405 | default: | |
23136709 KB |
4406 | complaint (&symfile_complaints, |
4407 | "illegal bt %d in forward typedef for %s", tir.bt, | |
4408 | sym_name); | |
c906108c SS |
4409 | *tpp = init_type (type_code, 0, 0, (char *) NULL, |
4410 | current_objfile); | |
4411 | break; | |
4412 | } | |
4413 | return result; | |
4414 | } | |
4415 | else if (sh.st == stTypedef) | |
4416 | { | |
4417 | /* Parse the type for a normal typedef. This might recursively call | |
4418 | cross_ref till we get a non typedef'ed type. | |
4419 | FIXME: This is not correct behaviour, but gdb currently | |
4420 | cannot handle typedefs without type copying. But type copying is | |
4421 | impossible as we might have mutual forward references between | |
4422 | two files and the copied type would not get filled in when | |
4423 | we later parse its definition. */ | |
4424 | *tpp = parse_type (xref_fd, | |
4425 | debug_info->external_aux + fh->iauxBase, | |
4426 | sh.index, | |
c5aa993b | 4427 | (int *) NULL, |
c906108c SS |
4428 | fh->fBigendian, |
4429 | debug_info->ss + fh->issBase + sh.iss); | |
4430 | } | |
4431 | else | |
4432 | { | |
4433 | /* Cross reference to a struct/union/enum which is defined | |
4434 | in another file in the same compilation unit but that file | |
4435 | has not been parsed yet. | |
4436 | Initialize the type only, it will be filled in when | |
4437 | it's definition is parsed. */ | |
4438 | *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
4439 | } | |
4440 | add_pending (fh, esh, *tpp); | |
4441 | } | |
4442 | ||
4443 | /* We used one auxent normally, two if we got a "next one" rf. */ | |
4444 | return result; | |
4445 | } | |
4446 | ||
4447 | ||
4448 | /* Quick&dirty lookup procedure, to avoid the MI ones that require | |
4449 | keeping the symtab sorted */ | |
4450 | ||
4451 | static struct symbol * | |
fba45db2 KB |
4452 | mylookup_symbol (char *name, register struct block *block, |
4453 | namespace_enum namespace, enum address_class class) | |
c906108c | 4454 | { |
e88c90f2 DJ |
4455 | int i, inc; |
4456 | struct symbol *sym; | |
c906108c | 4457 | |
c906108c | 4458 | inc = name[0]; |
e88c90f2 | 4459 | ALL_BLOCK_SYMBOLS (block, i, sym) |
c906108c | 4460 | { |
c906108c SS |
4461 | if (SYMBOL_NAME (sym)[0] == inc |
4462 | && SYMBOL_NAMESPACE (sym) == namespace | |
4463 | && SYMBOL_CLASS (sym) == class | |
4464 | && strcmp (SYMBOL_NAME (sym), name) == 0) | |
4465 | return sym; | |
c906108c | 4466 | } |
e88c90f2 | 4467 | |
c906108c SS |
4468 | block = BLOCK_SUPERBLOCK (block); |
4469 | if (block) | |
4470 | return mylookup_symbol (name, block, namespace, class); | |
4471 | return 0; | |
4472 | } | |
4473 | ||
4474 | ||
4475 | /* Add a new symbol S to a block B. | |
4476 | Infrequently, we will need to reallocate the block to make it bigger. | |
4477 | We only detect this case when adding to top_stack->cur_block, since | |
4478 | that's the only time we know how big the block is. FIXME. */ | |
4479 | ||
4480 | static void | |
fba45db2 | 4481 | add_symbol (struct symbol *s, struct block *b) |
c906108c SS |
4482 | { |
4483 | int nsyms = BLOCK_NSYMS (b)++; | |
4484 | struct block *origb; | |
4485 | struct parse_stack *stackp; | |
4486 | ||
4487 | if (b == top_stack->cur_block && | |
4488 | nsyms >= top_stack->maxsyms) | |
4489 | { | |
23136709 KB |
4490 | complaint (&symfile_complaints, "block containing %s overfilled", |
4491 | SYMBOL_NAME (s)); | |
c906108c | 4492 | /* In this case shrink_block is actually grow_block, since |
c5aa993b | 4493 | BLOCK_NSYMS(b) is larger than its current size. */ |
c906108c SS |
4494 | origb = b; |
4495 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); | |
4496 | ||
4497 | /* Now run through the stack replacing pointers to the | |
c5aa993b JM |
4498 | original block. shrink_block has already done this |
4499 | for the blockvector and BLOCK_FUNCTION. */ | |
c906108c SS |
4500 | for (stackp = top_stack; stackp; stackp = stackp->next) |
4501 | { | |
4502 | if (stackp->cur_block == origb) | |
4503 | { | |
4504 | stackp->cur_block = b; | |
4505 | stackp->maxsyms = BLOCK_NSYMS (b); | |
4506 | } | |
4507 | } | |
4508 | } | |
4509 | BLOCK_SYM (b, nsyms) = s; | |
4510 | } | |
4511 | ||
4512 | /* Add a new block B to a symtab S */ | |
4513 | ||
4514 | static void | |
fba45db2 | 4515 | add_block (struct block *b, struct symtab *s) |
c906108c SS |
4516 | { |
4517 | struct blockvector *bv = BLOCKVECTOR (s); | |
4518 | ||
12b9c64f | 4519 | bv = (struct blockvector *) xrealloc ((void *) bv, |
c906108c SS |
4520 | (sizeof (struct blockvector) |
4521 | + BLOCKVECTOR_NBLOCKS (bv) | |
4522 | * sizeof (bv->block))); | |
4523 | if (bv != BLOCKVECTOR (s)) | |
4524 | BLOCKVECTOR (s) = bv; | |
4525 | ||
4526 | BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b; | |
4527 | } | |
4528 | ||
4529 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. | |
4530 | MIPS' linenumber encoding might need more than one byte | |
4531 | to describe it, LAST is used to detect these continuation lines. | |
4532 | ||
4533 | Combining lines with the same line number seems like a bad idea. | |
4534 | E.g: There could be a line number entry with the same line number after the | |
4535 | prologue and GDB should not ignore it (this is a better way to find | |
4536 | a prologue than mips_skip_prologue). | |
4537 | But due to the compressed line table format there are line number entries | |
4538 | for the same line which are needed to bridge the gap to the next | |
4539 | line number entry. These entries have a bogus address info with them | |
4540 | and we are unable to tell them from intended duplicate line number | |
4541 | entries. | |
4542 | This is another reason why -ggdb debugging format is preferable. */ | |
4543 | ||
4544 | static int | |
fba45db2 | 4545 | add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last) |
c906108c SS |
4546 | { |
4547 | /* DEC c89 sometimes produces zero linenos which confuse gdb. | |
4548 | Change them to something sensible. */ | |
4549 | if (lineno == 0) | |
4550 | lineno = 1; | |
4551 | if (last == 0) | |
4552 | last = -2; /* make sure we record first line */ | |
4553 | ||
4554 | if (last == lineno) /* skip continuation lines */ | |
4555 | return lineno; | |
4556 | ||
4557 | lt->item[lt->nitems].line = lineno; | |
4558 | lt->item[lt->nitems++].pc = adr << 2; | |
4559 | return lineno; | |
4560 | } | |
4561 | \f | |
4562 | /* Sorting and reordering procedures */ | |
4563 | ||
4564 | /* Blocks with a smaller low bound should come first */ | |
4565 | ||
4566 | static int | |
12b9c64f | 4567 | compare_blocks (const void *arg1, const void *arg2) |
c906108c SS |
4568 | { |
4569 | register int addr_diff; | |
4570 | struct block **b1 = (struct block **) arg1; | |
4571 | struct block **b2 = (struct block **) arg2; | |
4572 | ||
4573 | addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2))); | |
4574 | if (addr_diff == 0) | |
4575 | return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1))); | |
4576 | return addr_diff; | |
4577 | } | |
4578 | ||
4579 | /* Sort the blocks of a symtab S. | |
4580 | Reorder the blocks in the blockvector by code-address, | |
4581 | as required by some MI search routines */ | |
4582 | ||
4583 | static void | |
fba45db2 | 4584 | sort_blocks (struct symtab *s) |
c906108c SS |
4585 | { |
4586 | struct blockvector *bv = BLOCKVECTOR (s); | |
4587 | ||
4588 | if (BLOCKVECTOR_NBLOCKS (bv) <= 2) | |
4589 | { | |
4590 | /* Cosmetic */ | |
4591 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0) | |
4592 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0; | |
4593 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0) | |
4594 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0; | |
4595 | return; | |
4596 | } | |
4597 | /* | |
4598 | * This is very unfortunate: normally all functions are compiled in | |
4599 | * the order they are found, but if the file is compiled -O3 things | |
4600 | * are very different. It would be nice to find a reliable test | |
4601 | * to detect -O3 images in advance. | |
4602 | */ | |
4603 | if (BLOCKVECTOR_NBLOCKS (bv) > 3) | |
4604 | qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK), | |
4605 | BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK, | |
4606 | sizeof (struct block *), | |
4607 | compare_blocks); | |
4608 | ||
4609 | { | |
4610 | register CORE_ADDR high = 0; | |
4611 | register int i, j = BLOCKVECTOR_NBLOCKS (bv); | |
4612 | ||
4613 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) | |
4614 | if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i))) | |
4615 | high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)); | |
4616 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high; | |
4617 | } | |
4618 | ||
4619 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = | |
4620 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK)); | |
4621 | ||
4622 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4623 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4624 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4625 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4626 | } | |
4627 | \f | |
4628 | ||
4629 | /* Constructor/restructor/destructor procedures */ | |
4630 | ||
4631 | /* Allocate a new symtab for NAME. Needs an estimate of how many symbols | |
4632 | MAXSYMS and linenumbers MAXLINES we'll put in it */ | |
4633 | ||
4634 | static struct symtab * | |
fba45db2 | 4635 | new_symtab (char *name, int maxsyms, int maxlines, struct objfile *objfile) |
c906108c SS |
4636 | { |
4637 | struct symtab *s = allocate_symtab (name, objfile); | |
4638 | ||
4639 | LINETABLE (s) = new_linetable (maxlines); | |
4640 | ||
4641 | /* All symtabs must have at least two blocks */ | |
4642 | BLOCKVECTOR (s) = new_bvect (2); | |
4643 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms); | |
4644 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms); | |
4645 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) = | |
4646 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
4647 | ||
4648 | s->free_code = free_linetable; | |
4649 | s->debugformat = obsavestring ("ECOFF", 5, | |
c5aa993b | 4650 | &objfile->symbol_obstack); |
c906108c SS |
4651 | return (s); |
4652 | } | |
4653 | ||
4654 | /* Allocate a new partial_symtab NAME */ | |
4655 | ||
4656 | static struct partial_symtab * | |
fba45db2 | 4657 | new_psymtab (char *name, struct objfile *objfile) |
c906108c SS |
4658 | { |
4659 | struct partial_symtab *psymtab; | |
4660 | ||
4661 | psymtab = allocate_psymtab (name, objfile); | |
d4f3574e | 4662 | psymtab->section_offsets = objfile->section_offsets; |
c906108c SS |
4663 | |
4664 | /* Keep a backpointer to the file's symbols */ | |
4665 | ||
4666 | psymtab->read_symtab_private = ((char *) | |
4667 | obstack_alloc (&objfile->psymbol_obstack, | |
4668 | sizeof (struct symloc))); | |
12b9c64f | 4669 | memset (psymtab->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
4670 | CUR_BFD (psymtab) = cur_bfd; |
4671 | DEBUG_SWAP (psymtab) = debug_swap; | |
4672 | DEBUG_INFO (psymtab) = debug_info; | |
4673 | PENDING_LIST (psymtab) = pending_list; | |
4674 | ||
4675 | /* The way to turn this into a symtab is to call... */ | |
4676 | psymtab->read_symtab = mdebug_psymtab_to_symtab; | |
4677 | return (psymtab); | |
4678 | } | |
4679 | ||
4680 | ||
4681 | /* Allocate a linetable array of the given SIZE. Since the struct | |
4682 | already includes one item, we subtract one when calculating the | |
4683 | proper size to allocate. */ | |
4684 | ||
4685 | static struct linetable * | |
fba45db2 | 4686 | new_linetable (int size) |
c906108c SS |
4687 | { |
4688 | struct linetable *l; | |
4689 | ||
4690 | size = (size - 1) * sizeof (l->item) + sizeof (struct linetable); | |
4691 | l = (struct linetable *) xmalloc (size); | |
4692 | l->nitems = 0; | |
4693 | return l; | |
4694 | } | |
4695 | ||
4696 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, | |
4697 | I am not so sure about the 3.4 ones. | |
4698 | ||
4699 | Since the struct linetable already includes one item, we subtract one when | |
4700 | calculating the proper size to allocate. */ | |
4701 | ||
4702 | static struct linetable * | |
fba45db2 | 4703 | shrink_linetable (struct linetable *lt) |
c906108c SS |
4704 | { |
4705 | ||
12b9c64f | 4706 | return (struct linetable *) xrealloc ((void *) lt, |
c906108c SS |
4707 | (sizeof (struct linetable) |
4708 | + ((lt->nitems - 1) | |
4709 | * sizeof (lt->item)))); | |
4710 | } | |
4711 | ||
4712 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ | |
4713 | ||
4714 | static struct blockvector * | |
fba45db2 | 4715 | new_bvect (int nblocks) |
c906108c SS |
4716 | { |
4717 | struct blockvector *bv; | |
4718 | int size; | |
4719 | ||
4720 | size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); | |
4721 | bv = (struct blockvector *) xzalloc (size); | |
4722 | ||
4723 | BLOCKVECTOR_NBLOCKS (bv) = nblocks; | |
4724 | ||
4725 | return bv; | |
4726 | } | |
4727 | ||
4728 | /* Allocate and zero a new block of MAXSYMS symbols */ | |
4729 | ||
4730 | static struct block * | |
fba45db2 | 4731 | new_block (int maxsyms) |
c906108c SS |
4732 | { |
4733 | int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *); | |
4734 | ||
4735 | return (struct block *) xzalloc (size); | |
4736 | } | |
4737 | ||
4738 | /* Ooops, too big. Shrink block B in symtab S to its minimal size. | |
4739 | Shrink_block can also be used by add_symbol to grow a block. */ | |
4740 | ||
4741 | static struct block * | |
fba45db2 | 4742 | shrink_block (struct block *b, struct symtab *s) |
c906108c SS |
4743 | { |
4744 | struct block *new; | |
4745 | struct blockvector *bv = BLOCKVECTOR (s); | |
4746 | int i; | |
4747 | ||
4748 | /* Just reallocate it and fix references to the old one */ | |
4749 | ||
12b9c64f | 4750 | new = (struct block *) xrealloc ((void *) b, |
c906108c SS |
4751 | (sizeof (struct block) |
4752 | + ((BLOCK_NSYMS (b) - 1) | |
4753 | * sizeof (struct symbol *)))); | |
4754 | ||
261397f8 DJ |
4755 | /* FIXME: Not worth hashing this block as it's built. */ |
4756 | /* All callers should have created the block with new_block (), which | |
4757 | would mean it was not previously hashed. Make sure. */ | |
4758 | gdb_assert (BLOCK_HASHTABLE (new) == 0); | |
4759 | ||
c906108c | 4760 | /* Should chase pointers to old one. Fortunately, that`s just |
c5aa993b | 4761 | the block`s function and inferior blocks */ |
c906108c SS |
4762 | if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b) |
4763 | SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new; | |
4764 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
4765 | if (BLOCKVECTOR_BLOCK (bv, i) == b) | |
4766 | BLOCKVECTOR_BLOCK (bv, i) = new; | |
4767 | else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b) | |
4768 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new; | |
4769 | return new; | |
4770 | } | |
4771 | ||
4772 | /* Create a new symbol with printname NAME */ | |
4773 | ||
4774 | static struct symbol * | |
fba45db2 | 4775 | new_symbol (char *name) |
c906108c SS |
4776 | { |
4777 | struct symbol *s = ((struct symbol *) | |
4778 | obstack_alloc (¤t_objfile->symbol_obstack, | |
4779 | sizeof (struct symbol))); | |
4780 | ||
12b9c64f | 4781 | memset (s, 0, sizeof (*s)); |
c906108c SS |
4782 | SYMBOL_NAME (s) = obsavestring (name, strlen (name), |
4783 | ¤t_objfile->symbol_obstack); | |
4784 | SYMBOL_LANGUAGE (s) = psymtab_language; | |
4785 | SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack); | |
4786 | return s; | |
4787 | } | |
4788 | ||
4789 | /* Create a new type with printname NAME */ | |
4790 | ||
4791 | static struct type * | |
fba45db2 | 4792 | new_type (char *name) |
c906108c SS |
4793 | { |
4794 | struct type *t; | |
4795 | ||
4796 | t = alloc_type (current_objfile); | |
4797 | TYPE_NAME (t) = name; | |
4798 | TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default; | |
4799 | return t; | |
4800 | } | |
4801 | \f | |
4802 | /* Read ECOFF debugging information from a BFD section. This is | |
4803 | called from elfread.c. It parses the section into a | |
4804 | ecoff_debug_info struct, and then lets the rest of the file handle | |
4805 | it as normal. */ | |
4806 | ||
4807 | void | |
fba45db2 KB |
4808 | elfmdebug_build_psymtabs (struct objfile *objfile, |
4809 | const struct ecoff_debug_swap *swap, asection *sec) | |
c906108c SS |
4810 | { |
4811 | bfd *abfd = objfile->obfd; | |
4812 | struct ecoff_debug_info *info; | |
4813 | ||
4814 | info = ((struct ecoff_debug_info *) | |
4815 | obstack_alloc (&objfile->psymbol_obstack, | |
4816 | sizeof (struct ecoff_debug_info))); | |
4817 | ||
4818 | if (!(*swap->read_debug_info) (abfd, sec, info)) | |
4819 | error ("Error reading ECOFF debugging information: %s", | |
4820 | bfd_errmsg (bfd_get_error ())); | |
4821 | ||
d4f3574e | 4822 | mdebug_build_psymtabs (objfile, swap, info); |
c906108c SS |
4823 | } |
4824 | \f | |
4825 | ||
4826 | /* Things used for calling functions in the inferior. | |
4827 | These functions are exported to our companion | |
4828 | mips-tdep.c file and are here because they play | |
4829 | with the symbol-table explicitly. */ | |
4830 | ||
4831 | /* Sigtramp: make sure we have all the necessary information | |
4832 | about the signal trampoline code. Since the official code | |
4833 | from MIPS does not do so, we make up that information ourselves. | |
4834 | If they fix the library (unlikely) this code will neutralize itself. */ | |
4835 | ||
4836 | /* FIXME: This function is called only by mips-tdep.c. It needs to be | |
4837 | here because it calls functions defined in this file, but perhaps | |
4838 | this could be handled in a better way. Only compile it in when | |
4839 | tm-mips.h is included. */ | |
4840 | ||
4841 | #ifdef TM_MIPS_H | |
4842 | ||
4843 | void | |
fba45db2 | 4844 | fixup_sigtramp (void) |
c906108c SS |
4845 | { |
4846 | struct symbol *s; | |
4847 | struct symtab *st; | |
4848 | struct block *b, *b0 = NULL; | |
4849 | ||
4850 | sigtramp_address = -1; | |
4851 | ||
4852 | /* We have to handle the following cases here: | |
4853 | a) The Mips library has a sigtramp label within sigvec. | |
4854 | b) Irix has a _sigtramp which we want to use, but it also has sigvec. */ | |
4855 | s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL); | |
4856 | if (s != 0) | |
4857 | { | |
4858 | b0 = SYMBOL_BLOCK_VALUE (s); | |
4859 | s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL); | |
4860 | } | |
4861 | if (s == 0) | |
4862 | { | |
4863 | /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */ | |
4864 | s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL); | |
4865 | } | |
4866 | ||
4867 | /* But maybe this program uses its own version of sigvec */ | |
4868 | if (s == 0) | |
4869 | return; | |
4870 | ||
4871 | /* Did we or MIPSco fix the library ? */ | |
4872 | if (SYMBOL_CLASS (s) == LOC_BLOCK) | |
4873 | { | |
4874 | sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s)); | |
4875 | sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s)); | |
4876 | return; | |
4877 | } | |
4878 | ||
4879 | sigtramp_address = SYMBOL_VALUE (s); | |
4880 | sigtramp_end = sigtramp_address + 0x88; /* black magic */ | |
4881 | ||
4882 | /* But what symtab does it live in ? */ | |
4883 | st = find_pc_symtab (SYMBOL_VALUE (s)); | |
4884 | ||
4885 | /* | |
4886 | * Ok, there goes the fix: turn it into a procedure, with all the | |
4887 | * needed info. Note we make it a nested procedure of sigvec, | |
4888 | * which is the way the (assembly) code is actually written. | |
4889 | */ | |
4890 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
4891 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
4892 | SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL, | |
4893 | st->objfile); | |
4894 | TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = mdebug_type_void; | |
4895 | ||
4896 | /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */ | |
4897 | b = new_block (1); | |
4898 | SYMBOL_BLOCK_VALUE (s) = b; | |
4899 | BLOCK_START (b) = sigtramp_address; | |
4900 | BLOCK_END (b) = sigtramp_end; | |
4901 | BLOCK_FUNCTION (b) = s; | |
4902 | BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0); | |
4903 | add_block (b, st); | |
4904 | sort_blocks (st); | |
4905 | ||
4906 | /* Make a MIPS_EFI_SYMBOL_NAME entry for it */ | |
4907 | { | |
4908 | struct mips_extra_func_info *e = | |
c5aa993b JM |
4909 | ((struct mips_extra_func_info *) |
4910 | xzalloc (sizeof (struct mips_extra_func_info))); | |
c906108c SS |
4911 | |
4912 | e->numargs = 0; /* the kernel thinks otherwise */ | |
4913 | e->pdr.frameoffset = 32; | |
4914 | e->pdr.framereg = SP_REGNUM; | |
4915 | /* Note that setting pcreg is no longer strictly necessary as | |
4916 | mips_frame_saved_pc is now aware of signal handler frames. */ | |
4917 | e->pdr.pcreg = PC_REGNUM; | |
4918 | e->pdr.regmask = -2; | |
4919 | /* Offset to saved r31, in the sigtramp case the saved registers | |
4920 | are above the frame in the sigcontext. | |
4921 | We have 4 alignment bytes, 12 bytes for onstack, mask and pc, | |
4922 | 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp | |
4923 | and 32 * 4 bytes for the floating point registers. */ | |
4924 | e->pdr.regoffset = 4 + 12 + 31 * 4; | |
4925 | e->pdr.fregmask = -1; | |
4926 | /* Offset to saved f30 (first saved *double* register). */ | |
4927 | e->pdr.fregoffset = 4 + 12 + 32 * 4 + 12 + 30 * 4; | |
4928 | e->pdr.isym = (long) s; | |
4929 | e->pdr.adr = sigtramp_address; | |
4930 | ||
4931 | current_objfile = st->objfile; /* Keep new_symbol happy */ | |
4932 | s = new_symbol (MIPS_EFI_SYMBOL_NAME); | |
4933 | SYMBOL_VALUE (s) = (long) e; | |
4934 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; | |
4935 | SYMBOL_CLASS (s) = LOC_CONST; | |
4936 | SYMBOL_TYPE (s) = mdebug_type_void; | |
4937 | current_objfile = NULL; | |
4938 | } | |
4939 | ||
4940 | BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s; | |
4941 | } | |
4942 | ||
c5aa993b | 4943 | #endif /* TM_MIPS_H */ |
c906108c SS |
4944 | |
4945 | void | |
fba45db2 | 4946 | _initialize_mdebugread (void) |
c906108c SS |
4947 | { |
4948 | mdebug_type_void = | |
4949 | init_type (TYPE_CODE_VOID, 1, | |
4950 | 0, | |
4951 | "void", (struct objfile *) NULL); | |
4952 | mdebug_type_char = | |
4953 | init_type (TYPE_CODE_INT, 1, | |
4954 | 0, | |
4955 | "char", (struct objfile *) NULL); | |
4956 | mdebug_type_unsigned_char = | |
4957 | init_type (TYPE_CODE_INT, 1, | |
4958 | TYPE_FLAG_UNSIGNED, | |
4959 | "unsigned char", (struct objfile *) NULL); | |
4960 | mdebug_type_short = | |
4961 | init_type (TYPE_CODE_INT, 2, | |
4962 | 0, | |
4963 | "short", (struct objfile *) NULL); | |
4964 | mdebug_type_unsigned_short = | |
4965 | init_type (TYPE_CODE_INT, 2, | |
4966 | TYPE_FLAG_UNSIGNED, | |
4967 | "unsigned short", (struct objfile *) NULL); | |
4968 | mdebug_type_int_32 = | |
4969 | init_type (TYPE_CODE_INT, 4, | |
4970 | 0, | |
4971 | "int", (struct objfile *) NULL); | |
4972 | mdebug_type_unsigned_int_32 = | |
4973 | init_type (TYPE_CODE_INT, 4, | |
4974 | TYPE_FLAG_UNSIGNED, | |
4975 | "unsigned int", (struct objfile *) NULL); | |
4976 | mdebug_type_int_64 = | |
4977 | init_type (TYPE_CODE_INT, 8, | |
4978 | 0, | |
4979 | "int", (struct objfile *) NULL); | |
4980 | mdebug_type_unsigned_int_64 = | |
4981 | init_type (TYPE_CODE_INT, 8, | |
4982 | TYPE_FLAG_UNSIGNED, | |
4983 | "unsigned int", (struct objfile *) NULL); | |
4984 | mdebug_type_long_32 = | |
4985 | init_type (TYPE_CODE_INT, 4, | |
4986 | 0, | |
4987 | "long", (struct objfile *) NULL); | |
4988 | mdebug_type_unsigned_long_32 = | |
4989 | init_type (TYPE_CODE_INT, 4, | |
4990 | TYPE_FLAG_UNSIGNED, | |
4991 | "unsigned long", (struct objfile *) NULL); | |
4992 | mdebug_type_long_64 = | |
4993 | init_type (TYPE_CODE_INT, 8, | |
4994 | 0, | |
4995 | "long", (struct objfile *) NULL); | |
4996 | mdebug_type_unsigned_long_64 = | |
4997 | init_type (TYPE_CODE_INT, 8, | |
4998 | TYPE_FLAG_UNSIGNED, | |
4999 | "unsigned long", (struct objfile *) NULL); | |
5000 | mdebug_type_long_long_64 = | |
5001 | init_type (TYPE_CODE_INT, 8, | |
5002 | 0, | |
5003 | "long long", (struct objfile *) NULL); | |
c5aa993b | 5004 | mdebug_type_unsigned_long_long_64 = |
c906108c SS |
5005 | init_type (TYPE_CODE_INT, 8, |
5006 | TYPE_FLAG_UNSIGNED, | |
5007 | "unsigned long long", (struct objfile *) NULL); | |
5008 | mdebug_type_adr_32 = | |
5009 | init_type (TYPE_CODE_PTR, 4, | |
5010 | TYPE_FLAG_UNSIGNED, | |
5011 | "adr_32", (struct objfile *) NULL); | |
5012 | TYPE_TARGET_TYPE (mdebug_type_adr_32) = mdebug_type_void; | |
5013 | mdebug_type_adr_64 = | |
5014 | init_type (TYPE_CODE_PTR, 8, | |
5015 | TYPE_FLAG_UNSIGNED, | |
5016 | "adr_64", (struct objfile *) NULL); | |
5017 | TYPE_TARGET_TYPE (mdebug_type_adr_64) = mdebug_type_void; | |
5018 | mdebug_type_float = | |
5019 | init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
5020 | 0, | |
5021 | "float", (struct objfile *) NULL); | |
5022 | mdebug_type_double = | |
5023 | init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
5024 | 0, | |
5025 | "double", (struct objfile *) NULL); | |
5026 | mdebug_type_complex = | |
5027 | init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
5028 | 0, | |
5029 | "complex", (struct objfile *) NULL); | |
5030 | TYPE_TARGET_TYPE (mdebug_type_complex) = mdebug_type_float; | |
5031 | mdebug_type_double_complex = | |
5032 | init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
5033 | 0, | |
5034 | "double complex", (struct objfile *) NULL); | |
5035 | TYPE_TARGET_TYPE (mdebug_type_double_complex) = mdebug_type_double; | |
5036 | ||
5037 | /* Is a "string" the way btString means it the same as TYPE_CODE_STRING? | |
5038 | FIXME. */ | |
5039 | mdebug_type_string = | |
5040 | init_type (TYPE_CODE_STRING, | |
5041 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
5042 | 0, "string", | |
5043 | (struct objfile *) NULL); | |
5044 | ||
5045 | /* We use TYPE_CODE_INT to print these as integers. Does this do any | |
5046 | good? Would we be better off with TYPE_CODE_ERROR? Should | |
5047 | TYPE_CODE_ERROR print things in hex if it knows the size? */ | |
5048 | mdebug_type_fixed_dec = | |
5049 | init_type (TYPE_CODE_INT, | |
5050 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
5051 | 0, "fixed decimal", | |
5052 | (struct objfile *) NULL); | |
5053 | ||
5054 | mdebug_type_float_dec = | |
5055 | init_type (TYPE_CODE_ERROR, | |
5056 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
5057 | 0, "floating decimal", | |
5058 | (struct objfile *) NULL); | |
5059 | ||
5060 | nodebug_func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0, | |
5061 | "<function, no debug info>", NULL); | |
5062 | TYPE_TARGET_TYPE (nodebug_func_symbol_type) = mdebug_type_int; | |
5063 | nodebug_var_symbol_type = | |
5064 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
5065 | "<variable, no debug info>", NULL); | |
5066 | } |