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 */ | |
754 | s = new_symbol (name); | |
755 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
756 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
757 | /* Type of the return value */ | |
c5aa993b | 758 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
759 | t = mdebug_type_int; |
760 | else | |
761 | { | |
762 | t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name); | |
0004e5a2 | 763 | if (STREQ (name, "malloc") && TYPE_CODE (t) == TYPE_CODE_VOID) |
c906108c SS |
764 | { |
765 | /* I don't know why, but, at least under Alpha GNU/Linux, | |
c5aa993b JM |
766 | when linking against a malloc without debugging |
767 | symbols, its read as a function returning void---this | |
768 | is bad because it means we cannot call functions with | |
769 | string arguments interactively; i.e., "call | |
770 | printf("howdy\n")" would fail with the error message | |
771 | "program has no memory available". To avoid this, we | |
772 | patch up the type and make it void* | |
773 | instead. (davidm@azstarnet.com) | |
774 | */ | |
c906108c SS |
775 | t = make_pointer_type (t, NULL); |
776 | } | |
777 | } | |
778 | b = top_stack->cur_block; | |
779 | if (sh->st == stProc) | |
780 | { | |
781 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
782 | /* The next test should normally be true, but provides a | |
783 | hook for nested functions (which we don't want to make | |
784 | global). */ | |
785 | if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) | |
786 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
787 | /* Irix 5 sometimes has duplicate names for the same | |
788 | function. We want to add such names up at the global | |
789 | level, not as a nested function. */ | |
790 | else if (sh->value == top_stack->procadr) | |
791 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
792 | } | |
793 | add_symbol (s, b); | |
794 | ||
795 | /* Make a type for the procedure itself */ | |
796 | SYMBOL_TYPE (s) = lookup_function_type (t); | |
797 | ||
1e698235 DJ |
798 | /* All functions in C++ have prototypes. For C we don't have enough |
799 | information in the debug info. */ | |
800 | if (SYMBOL_LANGUAGE (s) == language_cplus) | |
801 | TYPE_FLAGS (SYMBOL_TYPE (s)) |= TYPE_FLAG_PROTOTYPED; | |
802 | ||
c906108c SS |
803 | /* Create and enter a new lexical context */ |
804 | b = new_block (top_stack->maxsyms); | |
805 | SYMBOL_BLOCK_VALUE (s) = b; | |
806 | BLOCK_FUNCTION (b) = s; | |
807 | BLOCK_START (b) = BLOCK_END (b) = sh->value; | |
808 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
809 | add_block (b, top_stack->cur_st); | |
810 | ||
811 | /* Not if we only have partial info */ | |
c5aa993b | 812 | if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil) |
c906108c SS |
813 | break; |
814 | ||
815 | push_parse_stack (); | |
816 | top_stack->cur_block = b; | |
817 | top_stack->blocktype = sh->st; | |
818 | top_stack->cur_type = SYMBOL_TYPE (s); | |
819 | top_stack->cur_field = -1; | |
820 | top_stack->procadr = sh->value; | |
821 | top_stack->numargs = 0; | |
822 | break; | |
823 | ||
824 | /* Beginning of code for structure, union, and enum definitions. | |
c5aa993b | 825 | They all share a common set of local variables, defined here. */ |
c906108c SS |
826 | { |
827 | enum type_code type_code; | |
828 | char *ext_tsym; | |
829 | int nfields; | |
830 | long max_value; | |
831 | struct field *f; | |
832 | ||
833 | case stStruct: /* Start a block defining a struct type */ | |
834 | type_code = TYPE_CODE_STRUCT; | |
835 | goto structured_common; | |
836 | ||
837 | case stUnion: /* Start a block defining a union type */ | |
838 | type_code = TYPE_CODE_UNION; | |
839 | goto structured_common; | |
840 | ||
841 | case stEnum: /* Start a block defining an enum type */ | |
842 | type_code = TYPE_CODE_ENUM; | |
843 | goto structured_common; | |
844 | ||
845 | case stBlock: /* Either a lexical block, or some type */ | |
c5aa993b | 846 | if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc)) |
c906108c SS |
847 | goto case_stBlock_code; /* Lexical block */ |
848 | ||
849 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ | |
850 | ||
851 | /* Common code for handling struct, union, enum, and/or as-yet- | |
852 | unknown-type blocks of info about structured data. `type_code' | |
853 | has been set to the proper TYPE_CODE, if we know it. */ | |
854 | structured_common: | |
855 | found_ecoff_debugging_info = 1; | |
856 | push_parse_stack (); | |
857 | top_stack->blocktype = stBlock; | |
858 | ||
859 | /* First count the number of fields and the highest value. */ | |
860 | nfields = 0; | |
861 | max_value = 0; | |
862 | for (ext_tsym = ext_sh + external_sym_size; | |
863 | ; | |
864 | ext_tsym += external_sym_size) | |
865 | { | |
866 | SYMR tsym; | |
867 | ||
868 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
869 | ||
870 | switch (tsym.st) | |
871 | { | |
872 | case stEnd: | |
f0394be6 JB |
873 | /* C++ encodes class types as structures where there the |
874 | methods are encoded as stProc. The scope of stProc | |
875 | symbols also ends with stEnd, thus creating a risk of | |
876 | taking the wrong stEnd symbol record as the end of | |
877 | the current struct, which would cause GDB to undercount | |
878 | the real number of fields in this struct. To make sure | |
879 | we really reached the right stEnd symbol record, we | |
880 | check the associated name, and match it against the | |
881 | struct name. Since method names are mangled while | |
882 | the class name is not, there is no risk of having a | |
883 | method whose name is identical to the class name | |
884 | (in particular constructor method names are different | |
885 | from the class name). There is therefore no risk that | |
886 | this check stops the count on the StEnd of a method. */ | |
887 | if (strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss, | |
888 | name) == 0) | |
889 | goto end_of_fields; | |
890 | break; | |
c906108c SS |
891 | |
892 | case stMember: | |
893 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
894 | { |
895 | /* If the type of the member is Nil (or Void), | |
896 | without qualifiers, assume the tag is an | |
897 | enumeration. | |
898 | Alpha cc -migrate enums are recognized by a zero | |
899 | index and a zero symbol value. | |
900 | DU 4.0 cc enums are recognized by a member type of | |
901 | btEnum without qualifiers and a zero symbol value. */ | |
902 | if (tsym.index == indexNil | |
903 | || (tsym.index == 0 && sh->value == 0)) | |
904 | type_code = TYPE_CODE_ENUM; | |
905 | else | |
906 | { | |
907 | (*debug_swap->swap_tir_in) (bigend, | |
908 | &ax[tsym.index].a_ti, | |
909 | &tir); | |
910 | if ((tir.bt == btNil || tir.bt == btVoid | |
911 | || (tir.bt == btEnum && sh->value == 0)) | |
912 | && tir.tq0 == tqNil) | |
913 | type_code = TYPE_CODE_ENUM; | |
914 | } | |
915 | } | |
c906108c SS |
916 | nfields++; |
917 | if (tsym.value > max_value) | |
918 | max_value = tsym.value; | |
919 | break; | |
920 | ||
921 | case stBlock: | |
922 | case stUnion: | |
923 | case stEnum: | |
924 | case stStruct: | |
925 | { | |
926 | #if 0 | |
927 | /* This is a no-op; is it trying to tell us something | |
928 | we should be checking? */ | |
c5aa993b | 929 | if (tsym.sc == scVariant); /*UNIMPLEMENTED */ |
c906108c SS |
930 | #endif |
931 | if (tsym.index != 0) | |
932 | { | |
933 | /* This is something like a struct within a | |
c5aa993b JM |
934 | struct. Skip over the fields of the inner |
935 | struct. The -1 is because the for loop will | |
936 | increment ext_tsym. */ | |
c906108c SS |
937 | ext_tsym = ((char *) debug_info->external_sym |
938 | + ((cur_fdr->isymBase + tsym.index - 1) | |
939 | * external_sym_size)); | |
940 | } | |
941 | } | |
942 | break; | |
943 | ||
944 | case stTypedef: | |
945 | /* mips cc puts out a typedef for struct x if it is not yet | |
946 | defined when it encounters | |
947 | struct y { struct x *xp; }; | |
948 | Just ignore it. */ | |
949 | break; | |
950 | ||
951 | case stIndirect: | |
952 | /* Irix5 cc puts out a stIndirect for struct x if it is not | |
953 | yet defined when it encounters | |
954 | struct y { struct x *xp; }; | |
955 | Just ignore it. */ | |
956 | break; | |
957 | ||
958 | default: | |
23136709 KB |
959 | complaint (&symfile_complaints, |
960 | "declaration block contains unhandled symbol type %d", | |
961 | tsym.st); | |
c906108c SS |
962 | } |
963 | } | |
964 | end_of_fields:; | |
965 | ||
966 | /* In an stBlock, there is no way to distinguish structs, | |
967 | unions, and enums at this point. This is a bug in the | |
968 | original design (that has been fixed with the recent | |
969 | addition of the stStruct, stUnion, and stEnum symbol | |
970 | types.) The way you can tell is if/when you see a variable | |
971 | or field of that type. In that case the variable's type | |
972 | (in the AUX table) says if the type is struct, union, or | |
973 | enum, and points back to the stBlock here. So you can | |
974 | patch the tag kind up later - but only if there actually is | |
975 | a variable or field of that type. | |
976 | ||
977 | So until we know for sure, we will guess at this point. | |
978 | The heuristic is: | |
979 | If the first member has index==indexNil or a void type, | |
980 | assume we have an enumeration. | |
981 | Otherwise, if there is more than one member, and all | |
982 | the members have offset 0, assume we have a union. | |
983 | Otherwise, assume we have a struct. | |
984 | ||
985 | The heuristic could guess wrong in the case of of an | |
986 | enumeration with no members or a union with one (or zero) | |
987 | members, or when all except the last field of a struct have | |
988 | width zero. These are uncommon and/or illegal situations, | |
989 | and in any case guessing wrong probably doesn't matter | |
990 | much. | |
991 | ||
992 | But if we later do find out we were wrong, we fixup the tag | |
993 | kind. Members of an enumeration must be handled | |
994 | differently from struct/union fields, and that is harder to | |
995 | patch up, but luckily we shouldn't need to. (If there are | |
996 | any enumeration members, we can tell for sure it's an enum | |
997 | here.) */ | |
998 | ||
999 | if (type_code == TYPE_CODE_UNDEF) | |
7a292a7a SS |
1000 | { |
1001 | if (nfields > 1 && max_value == 0) | |
1002 | type_code = TYPE_CODE_UNION; | |
1003 | else | |
1004 | type_code = TYPE_CODE_STRUCT; | |
1005 | } | |
c906108c SS |
1006 | |
1007 | /* Create a new type or use the pending type. */ | |
1008 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1009 | if (pend == (struct mdebug_pending *) NULL) | |
1010 | { | |
1011 | t = new_type (NULL); | |
1012 | add_pending (cur_fdr, ext_sh, t); | |
1013 | } | |
1014 | else | |
1015 | t = pend->t; | |
1016 | ||
1017 | /* Do not set the tag name if it is a compiler generated tag name | |
1018 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. | |
1019 | Alpha cc puts out an sh->iss of zero for those. */ | |
1020 | if (sh->iss == 0 || name[0] == '.' || name[0] == '\0') | |
1021 | TYPE_TAG_NAME (t) = NULL; | |
1022 | else | |
1023 | TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack, | |
1024 | "", "", name); | |
1025 | ||
1026 | TYPE_CODE (t) = type_code; | |
1027 | TYPE_LENGTH (t) = sh->value; | |
1028 | TYPE_NFIELDS (t) = nfields; | |
1029 | TYPE_FIELDS (t) = f = ((struct field *) | |
1030 | TYPE_ALLOC (t, | |
1031 | nfields * sizeof (struct field))); | |
1032 | ||
1033 | if (type_code == TYPE_CODE_ENUM) | |
1034 | { | |
1035 | int unsigned_enum = 1; | |
1036 | ||
1037 | /* This is a non-empty enum. */ | |
1038 | ||
1039 | /* DEC c89 has the number of enumerators in the sh.value field, | |
1040 | not the type length, so we have to compensate for that | |
1041 | incompatibility quirk. | |
1042 | This might do the wrong thing for an enum with one or two | |
1043 | enumerators and gcc -gcoff -fshort-enums, but these cases | |
1044 | are hopefully rare enough. | |
1045 | Alpha cc -migrate has a sh.value field of zero, we adjust | |
1046 | that too. */ | |
1047 | if (TYPE_LENGTH (t) == TYPE_NFIELDS (t) | |
1048 | || TYPE_LENGTH (t) == 0) | |
1049 | TYPE_LENGTH (t) = TARGET_INT_BIT / HOST_CHAR_BIT; | |
1050 | for (ext_tsym = ext_sh + external_sym_size; | |
1051 | ; | |
1052 | ext_tsym += external_sym_size) | |
1053 | { | |
1054 | SYMR tsym; | |
1055 | struct symbol *enum_sym; | |
1056 | ||
1057 | (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); | |
1058 | ||
1059 | if (tsym.st != stMember) | |
1060 | break; | |
1061 | ||
1062 | FIELD_BITPOS (*f) = tsym.value; | |
1063 | FIELD_TYPE (*f) = t; | |
1064 | FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss; | |
1065 | FIELD_BITSIZE (*f) = 0; | |
01ad7f36 | 1066 | FIELD_STATIC_KIND (*f) = 0; |
c906108c SS |
1067 | |
1068 | enum_sym = ((struct symbol *) | |
1069 | obstack_alloc (¤t_objfile->symbol_obstack, | |
1070 | sizeof (struct symbol))); | |
12b9c64f | 1071 | memset (enum_sym, 0, sizeof (struct symbol)); |
c906108c SS |
1072 | SYMBOL_NAME (enum_sym) = |
1073 | obsavestring (f->name, strlen (f->name), | |
1074 | ¤t_objfile->symbol_obstack); | |
1075 | SYMBOL_CLASS (enum_sym) = LOC_CONST; | |
1076 | SYMBOL_TYPE (enum_sym) = t; | |
1077 | SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE; | |
1078 | SYMBOL_VALUE (enum_sym) = tsym.value; | |
1079 | if (SYMBOL_VALUE (enum_sym) < 0) | |
1080 | unsigned_enum = 0; | |
1081 | add_symbol (enum_sym, top_stack->cur_block); | |
1082 | ||
1083 | /* Skip the stMembers that we've handled. */ | |
1084 | count++; | |
1085 | f++; | |
1086 | } | |
1087 | if (unsigned_enum) | |
1088 | TYPE_FLAGS (t) |= TYPE_FLAG_UNSIGNED; | |
1089 | } | |
1090 | /* make this the current type */ | |
1091 | top_stack->cur_type = t; | |
1092 | top_stack->cur_field = 0; | |
1093 | ||
1094 | /* Do not create a symbol for alpha cc unnamed structs. */ | |
1095 | if (sh->iss == 0) | |
1096 | break; | |
1097 | ||
1098 | /* gcc puts out an empty struct for an opaque struct definitions, | |
1099 | do not create a symbol for it either. */ | |
1100 | if (TYPE_NFIELDS (t) == 0) | |
1101 | { | |
1102 | TYPE_FLAGS (t) |= TYPE_FLAG_STUB; | |
1103 | break; | |
1104 | } | |
1105 | ||
1106 | s = new_symbol (name); | |
1107 | SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE; | |
1108 | SYMBOL_CLASS (s) = LOC_TYPEDEF; | |
1109 | SYMBOL_VALUE (s) = 0; | |
1110 | SYMBOL_TYPE (s) = t; | |
1111 | add_symbol (s, top_stack->cur_block); | |
1112 | break; | |
1113 | ||
1114 | /* End of local variables shared by struct, union, enum, and | |
1115 | block (as yet unknown struct/union/enum) processing. */ | |
1116 | } | |
1117 | ||
1118 | case_stBlock_code: | |
1119 | found_ecoff_debugging_info = 1; | |
1120 | /* beginnning of (code) block. Value of symbol | |
c5aa993b | 1121 | is the displacement from procedure start */ |
c906108c SS |
1122 | push_parse_stack (); |
1123 | ||
1124 | /* Do not start a new block if this is the outermost block of a | |
c5aa993b JM |
1125 | procedure. This allows the LOC_BLOCK symbol to point to the |
1126 | block with the local variables, so funcname::var works. */ | |
c906108c SS |
1127 | if (top_stack->blocktype == stProc |
1128 | || top_stack->blocktype == stStaticProc) | |
1129 | { | |
1130 | top_stack->blocktype = stNil; | |
1131 | break; | |
1132 | } | |
1133 | ||
1134 | top_stack->blocktype = stBlock; | |
1135 | b = new_block (top_stack->maxsyms); | |
1136 | BLOCK_START (b) = sh->value + top_stack->procadr; | |
1137 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1138 | top_stack->cur_block = b; | |
1139 | add_block (b, top_stack->cur_st); | |
1140 | break; | |
1141 | ||
1142 | case stEnd: /* end (of anything) */ | |
c5aa993b | 1143 | if (sh->sc == scInfo || SC_IS_COMMON (sh->sc)) |
c906108c SS |
1144 | { |
1145 | /* Finished with type */ | |
1146 | top_stack->cur_type = 0; | |
1147 | } | |
1148 | else if (sh->sc == scText && | |
1149 | (top_stack->blocktype == stProc || | |
1150 | top_stack->blocktype == stStaticProc)) | |
1151 | { | |
1152 | /* Finished with procedure */ | |
1153 | struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); | |
1154 | struct mips_extra_func_info *e; | |
1155 | struct block *b; | |
1156 | struct type *ftype = top_stack->cur_type; | |
1157 | int i; | |
1158 | ||
1159 | BLOCK_END (top_stack->cur_block) += sh->value; /* size */ | |
1160 | ||
1161 | /* Make up special symbol to contain procedure specific info */ | |
1162 | s = new_symbol (MIPS_EFI_SYMBOL_NAME); | |
1163 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; | |
1164 | SYMBOL_CLASS (s) = LOC_CONST; | |
1165 | SYMBOL_TYPE (s) = mdebug_type_void; | |
1166 | e = ((struct mips_extra_func_info *) | |
1167 | obstack_alloc (¤t_objfile->symbol_obstack, | |
1168 | sizeof (struct mips_extra_func_info))); | |
12b9c64f | 1169 | memset (e, 0, sizeof (struct mips_extra_func_info)); |
c906108c SS |
1170 | SYMBOL_VALUE (s) = (long) e; |
1171 | e->numargs = top_stack->numargs; | |
1172 | e->pdr.framereg = -1; | |
1173 | add_symbol (s, top_stack->cur_block); | |
1174 | ||
1175 | /* Reallocate symbols, saving memory */ | |
1176 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); | |
1177 | ||
1178 | /* f77 emits proc-level with address bounds==[0,0], | |
1179 | So look for such child blocks, and patch them. */ | |
1180 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
1181 | { | |
1182 | struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i); | |
1183 | if (BLOCK_SUPERBLOCK (b_bad) == b | |
1184 | && BLOCK_START (b_bad) == top_stack->procadr | |
1185 | && BLOCK_END (b_bad) == top_stack->procadr) | |
1186 | { | |
1187 | BLOCK_START (b_bad) = BLOCK_START (b); | |
1188 | BLOCK_END (b_bad) = BLOCK_END (b); | |
1189 | } | |
1190 | } | |
1191 | ||
1192 | if (TYPE_NFIELDS (ftype) <= 0) | |
1193 | { | |
1194 | /* No parameter type information is recorded with the function's | |
c5aa993b | 1195 | type. Set that from the type of the parameter symbols. */ |
c906108c SS |
1196 | int nparams = top_stack->numargs; |
1197 | int iparams; | |
1198 | struct symbol *sym; | |
1199 | ||
1200 | if (nparams > 0) | |
1201 | { | |
1202 | TYPE_NFIELDS (ftype) = nparams; | |
1203 | TYPE_FIELDS (ftype) = (struct field *) | |
1204 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
c5aa993b | 1205 | |
c906108c SS |
1206 | for (i = iparams = 0; iparams < nparams; i++) |
1207 | { | |
1208 | sym = BLOCK_SYM (b, i); | |
1209 | switch (SYMBOL_CLASS (sym)) | |
1210 | { | |
1211 | case LOC_ARG: | |
1212 | case LOC_REF_ARG: | |
1213 | case LOC_REGPARM: | |
1214 | case LOC_REGPARM_ADDR: | |
1215 | TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym); | |
8176bb6d | 1216 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
c906108c SS |
1217 | iparams++; |
1218 | break; | |
1219 | default: | |
1220 | break; | |
1221 | } | |
1222 | } | |
1223 | } | |
1224 | } | |
1225 | } | |
1226 | else if (sh->sc == scText && top_stack->blocktype == stBlock) | |
1227 | { | |
1228 | /* End of (code) block. The value of the symbol is the | |
1229 | displacement from the procedure`s start address of the | |
1230 | end of this block. */ | |
1231 | BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr; | |
1232 | shrink_block (top_stack->cur_block, top_stack->cur_st); | |
1233 | } | |
1234 | else if (sh->sc == scText && top_stack->blocktype == stNil) | |
1235 | { | |
1236 | /* End of outermost block. Pop parse stack and ignore. The | |
1237 | following stEnd of stProc will take care of the block. */ | |
1238 | ; | |
1239 | } | |
1240 | else if (sh->sc == scText && top_stack->blocktype == stFile) | |
1241 | { | |
1242 | /* End of file. Pop parse stack and ignore. Higher | |
1243 | level code deals with this. */ | |
1244 | ; | |
1245 | } | |
1246 | else | |
23136709 KB |
1247 | complaint (&symfile_complaints, |
1248 | "stEnd with storage class %d not handled", sh->sc); | |
c906108c SS |
1249 | |
1250 | pop_parse_stack (); /* restore previous lexical context */ | |
1251 | break; | |
1252 | ||
1253 | case stMember: /* member of struct or union */ | |
1254 | f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++]; | |
1255 | FIELD_NAME (*f) = name; | |
1256 | FIELD_BITPOS (*f) = sh->value; | |
1257 | bitsize = 0; | |
1258 | FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name); | |
1259 | FIELD_BITSIZE (*f) = bitsize; | |
01ad7f36 | 1260 | FIELD_STATIC_KIND (*f) = 0; |
c906108c SS |
1261 | break; |
1262 | ||
1263 | case stIndirect: /* forward declaration on Irix5 */ | |
1264 | /* Forward declarations from Irix5 cc are handled by cross_ref, | |
c5aa993b | 1265 | skip them. */ |
c906108c SS |
1266 | break; |
1267 | ||
1268 | case stTypedef: /* type definition */ | |
1269 | found_ecoff_debugging_info = 1; | |
1270 | ||
1271 | /* Typedefs for forward declarations and opaque structs from alpha cc | |
c5aa993b | 1272 | are handled by cross_ref, skip them. */ |
c906108c SS |
1273 | if (sh->iss == 0) |
1274 | break; | |
1275 | ||
1276 | /* Parse the type or use the pending type. */ | |
1277 | pend = is_pending_symbol (cur_fdr, ext_sh); | |
1278 | if (pend == (struct mdebug_pending *) NULL) | |
1279 | { | |
c5aa993b | 1280 | t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name); |
c906108c SS |
1281 | add_pending (cur_fdr, ext_sh, t); |
1282 | } | |
1283 | else | |
1284 | t = pend->t; | |
1285 | ||
1286 | /* mips cc puts out a typedef with the name of the struct for forward | |
c5aa993b JM |
1287 | declarations. These should not go into the symbol table and |
1288 | TYPE_NAME should not be set for them. | |
1289 | They can't be distinguished from an intentional typedef to | |
1290 | the same name however: | |
1291 | x.h: | |
1292 | struct x { int ix; int jx; }; | |
1293 | struct xx; | |
1294 | x.c: | |
1295 | typedef struct x x; | |
1296 | struct xx {int ixx; int jxx; }; | |
1297 | generates a cross referencing stTypedef for x and xx. | |
1298 | The user visible effect of this is that the type of a pointer | |
1299 | to struct foo sometimes is given as `foo *' instead of `struct foo *'. | |
1300 | The problem is fixed with alpha cc and Irix5 cc. */ | |
c906108c SS |
1301 | |
1302 | /* However if the typedef cross references to an opaque aggregate, it | |
c5aa993b | 1303 | is safe to omit it from the symbol table. */ |
c906108c SS |
1304 | |
1305 | if (has_opaque_xref (cur_fdr, sh)) | |
1306 | break; | |
1307 | s = new_symbol (name); | |
1308 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
1309 | SYMBOL_CLASS (s) = LOC_TYPEDEF; | |
1310 | SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block; | |
1311 | SYMBOL_TYPE (s) = t; | |
1312 | add_symbol (s, top_stack->cur_block); | |
1313 | ||
1314 | /* Incomplete definitions of structs should not get a name. */ | |
1315 | if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL | |
1316 | && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0 | |
c5aa993b | 1317 | || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT |
c906108c SS |
1318 | && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION))) |
1319 | { | |
1320 | if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR | |
1321 | || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC) | |
1322 | { | |
1323 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1324 | foo" or "function returning foo", we better not set |
1325 | the TYPE_NAME. If the program contains "typedef char | |
1326 | *caddr_t;", we don't want all variables of type char | |
1327 | * to print as caddr_t. This is not just a | |
1328 | consequence of GDB's type management; CC and GCC (at | |
1329 | least through version 2.4) both output variables of | |
1330 | either type char * or caddr_t with the type | |
1331 | refering to the stTypedef symbol for caddr_t. If a future | |
1332 | compiler cleans this up it GDB is not ready for it | |
1333 | yet, but if it becomes ready we somehow need to | |
1334 | disable this check (without breaking the PCC/GCC2.4 | |
1335 | case). | |
1336 | ||
1337 | Sigh. | |
1338 | ||
1339 | Fortunately, this check seems not to be necessary | |
1340 | for anything except pointers or functions. */ | |
c906108c SS |
1341 | } |
1342 | else | |
1343 | TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s); | |
1344 | } | |
1345 | break; | |
1346 | ||
1347 | case stFile: /* file name */ | |
1348 | push_parse_stack (); | |
1349 | top_stack->blocktype = sh->st; | |
1350 | break; | |
1351 | ||
1352 | /* I`ve never seen these for C */ | |
1353 | case stRegReloc: | |
1354 | break; /* register relocation */ | |
1355 | case stForward: | |
1356 | break; /* forwarding address */ | |
1357 | case stConstant: | |
1358 | break; /* constant */ | |
1359 | default: | |
23136709 | 1360 | complaint (&symfile_complaints, "unknown symbol type 0x%x", sh->st); |
c906108c SS |
1361 | break; |
1362 | } | |
1363 | ||
1364 | return count; | |
1365 | } | |
1366 | ||
1367 | /* Parse the type information provided in the raw AX entries for | |
1368 | the symbol SH. Return the bitfield size in BS, in case. | |
1369 | We must byte-swap the AX entries before we use them; BIGEND says whether | |
1370 | they are big-endian or little-endian (from fh->fBigendian). */ | |
1371 | ||
1372 | static struct type * | |
fba45db2 KB |
1373 | parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs, |
1374 | int bigend, char *sym_name) | |
c906108c SS |
1375 | { |
1376 | /* Null entries in this map are treated specially */ | |
1377 | static struct type **map_bt[] = | |
1378 | { | |
c5aa993b JM |
1379 | &mdebug_type_void, /* btNil */ |
1380 | &mdebug_type_adr_32, /* btAdr */ | |
1381 | &mdebug_type_char, /* btChar */ | |
1382 | &mdebug_type_unsigned_char, /* btUChar */ | |
1383 | &mdebug_type_short, /* btShort */ | |
c906108c | 1384 | &mdebug_type_unsigned_short, /* btUShort */ |
c5aa993b | 1385 | &mdebug_type_int_32, /* btInt */ |
c906108c | 1386 | &mdebug_type_unsigned_int_32, /* btUInt */ |
c5aa993b | 1387 | &mdebug_type_long_32, /* btLong */ |
c906108c | 1388 | &mdebug_type_unsigned_long_32, /* btULong */ |
c5aa993b JM |
1389 | &mdebug_type_float, /* btFloat */ |
1390 | &mdebug_type_double, /* btDouble */ | |
1391 | 0, /* btStruct */ | |
1392 | 0, /* btUnion */ | |
1393 | 0, /* btEnum */ | |
1394 | 0, /* btTypedef */ | |
1395 | 0, /* btRange */ | |
1396 | 0, /* btSet */ | |
1397 | &mdebug_type_complex, /* btComplex */ | |
c906108c | 1398 | &mdebug_type_double_complex, /* btDComplex */ |
c5aa993b JM |
1399 | 0, /* btIndirect */ |
1400 | &mdebug_type_fixed_dec, /* btFixedDec */ | |
1401 | &mdebug_type_float_dec, /* btFloatDec */ | |
1402 | &mdebug_type_string, /* btString */ | |
1403 | 0, /* btBit */ | |
1404 | 0, /* btPicture */ | |
1405 | &mdebug_type_void, /* btVoid */ | |
1406 | 0, /* DEC C++: Pointer to member */ | |
1407 | 0, /* DEC C++: Virtual function table */ | |
1408 | 0, /* DEC C++: Class (Record) */ | |
1409 | &mdebug_type_long_64, /* btLong64 */ | |
c906108c | 1410 | &mdebug_type_unsigned_long_64, /* btULong64 */ |
c5aa993b JM |
1411 | &mdebug_type_long_long_64, /* btLongLong64 */ |
1412 | &mdebug_type_unsigned_long_long_64, /* btULongLong64 */ | |
1413 | &mdebug_type_adr_64, /* btAdr64 */ | |
1414 | &mdebug_type_int_64, /* btInt64 */ | |
c906108c SS |
1415 | &mdebug_type_unsigned_int_64, /* btUInt64 */ |
1416 | }; | |
1417 | ||
1418 | TIR t[1]; | |
1419 | struct type *tp = 0; | |
1420 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1421 | ||
1422 | /* Handle undefined types, they have indexNil. */ | |
1423 | if (aux_index == indexNil) | |
1424 | return mdebug_type_int; | |
1425 | ||
1426 | /* Handle corrupt aux indices. */ | |
1427 | if (aux_index >= (debug_info->fdr + fd)->caux) | |
1428 | { | |
23136709 | 1429 | index_complaint (sym_name); |
c906108c SS |
1430 | return mdebug_type_int; |
1431 | } | |
1432 | ax += aux_index; | |
1433 | ||
1434 | /* Use aux as a type information record, map its basic type. */ | |
1435 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1436 | if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt))) | |
1437 | { | |
23136709 | 1438 | basic_type_complaint (t->bt, sym_name); |
c906108c SS |
1439 | return mdebug_type_int; |
1440 | } | |
1441 | if (map_bt[t->bt]) | |
1442 | { | |
1443 | tp = *map_bt[t->bt]; | |
1444 | } | |
1445 | else | |
1446 | { | |
1447 | tp = NULL; | |
1448 | /* Cannot use builtin types -- build our own */ | |
1449 | switch (t->bt) | |
1450 | { | |
1451 | case btStruct: | |
1452 | type_code = TYPE_CODE_STRUCT; | |
1453 | break; | |
1454 | case btUnion: | |
1455 | type_code = TYPE_CODE_UNION; | |
1456 | break; | |
1457 | case btEnum: | |
1458 | type_code = TYPE_CODE_ENUM; | |
1459 | break; | |
1460 | case btRange: | |
1461 | type_code = TYPE_CODE_RANGE; | |
1462 | break; | |
1463 | case btSet: | |
1464 | type_code = TYPE_CODE_SET; | |
1465 | break; | |
1466 | case btIndirect: | |
1467 | /* alpha cc -migrate uses this for typedefs. The true type will | |
1468 | be obtained by crossreferencing below. */ | |
1469 | type_code = TYPE_CODE_ERROR; | |
1470 | break; | |
1471 | case btTypedef: | |
1472 | /* alpha cc uses this for typedefs. The true type will be | |
1473 | obtained by crossreferencing below. */ | |
1474 | type_code = TYPE_CODE_ERROR; | |
1475 | break; | |
1476 | default: | |
23136709 | 1477 | basic_type_complaint (t->bt, sym_name); |
c906108c SS |
1478 | return mdebug_type_int; |
1479 | } | |
1480 | } | |
1481 | ||
1482 | /* Move on to next aux */ | |
1483 | ax++; | |
1484 | ||
1485 | if (t->fBitfield) | |
1486 | { | |
1487 | int width = AUX_GET_WIDTH (bigend, ax); | |
1488 | ||
1489 | /* Inhibit core dumps with some cfront generated objects that | |
c5aa993b JM |
1490 | corrupt the TIR. */ |
1491 | if (bs == (int *) NULL) | |
c906108c SS |
1492 | { |
1493 | /* Alpha cc -migrate encodes char and unsigned char types | |
1494 | as short and unsigned short types with a field width of 8. | |
1495 | Enum types also have a field width which we ignore for now. */ | |
1496 | if (t->bt == btShort && width == 8) | |
1497 | tp = mdebug_type_char; | |
1498 | else if (t->bt == btUShort && width == 8) | |
1499 | tp = mdebug_type_unsigned_char; | |
1500 | else if (t->bt == btEnum) | |
1501 | ; | |
1502 | else | |
23136709 KB |
1503 | complaint (&symfile_complaints, "can't handle TIR fBitfield for %s", |
1504 | sym_name); | |
c906108c SS |
1505 | } |
1506 | else | |
c5aa993b | 1507 | *bs = width; |
c906108c SS |
1508 | ax++; |
1509 | } | |
1510 | ||
1511 | /* A btIndirect entry cross references to an aux entry containing | |
1512 | the type. */ | |
1513 | if (t->bt == btIndirect) | |
1514 | { | |
1515 | RNDXR rn[1]; | |
1516 | int rf; | |
1517 | FDR *xref_fh; | |
1518 | int xref_fd; | |
1519 | ||
1520 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
1521 | ax++; | |
1522 | if (rn->rfd == 0xfff) | |
1523 | { | |
1524 | rf = AUX_GET_ISYM (bigend, ax); | |
1525 | ax++; | |
1526 | } | |
1527 | else | |
1528 | rf = rn->rfd; | |
1529 | ||
1530 | if (rf == -1) | |
1531 | { | |
23136709 KB |
1532 | complaint (&symfile_complaints, |
1533 | "unable to cross ref btIndirect for %s", sym_name); | |
c906108c SS |
1534 | return mdebug_type_int; |
1535 | } | |
1536 | xref_fh = get_rfd (fd, rf); | |
1537 | xref_fd = xref_fh - debug_info->fdr; | |
1538 | tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase, | |
c5aa993b | 1539 | rn->index, (int *) NULL, xref_fh->fBigendian, sym_name); |
c906108c SS |
1540 | } |
1541 | ||
1542 | /* All these types really point to some (common) MIPS type | |
1543 | definition, and only the type-qualifiers fully identify | |
1544 | them. We'll make the same effort at sharing. */ | |
1545 | if (t->bt == btStruct || | |
1546 | t->bt == btUnion || | |
1547 | t->bt == btEnum || | |
1548 | ||
c5aa993b JM |
1549 | /* btSet (I think) implies that the name is a tag name, not a typedef |
1550 | name. This apparently is a MIPS extension for C sets. */ | |
c906108c SS |
1551 | t->bt == btSet) |
1552 | { | |
1553 | char *name; | |
1554 | ||
1555 | /* Try to cross reference this type, build new type on failure. */ | |
1556 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1557 | if (tp == (struct type *) NULL) | |
1558 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
1559 | ||
1560 | /* DEC c89 produces cross references to qualified aggregate types, | |
c5aa993b | 1561 | dereference them. */ |
c906108c SS |
1562 | while (TYPE_CODE (tp) == TYPE_CODE_PTR |
1563 | || TYPE_CODE (tp) == TYPE_CODE_ARRAY) | |
0004e5a2 | 1564 | tp = TYPE_TARGET_TYPE (tp); |
c906108c SS |
1565 | |
1566 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1567 | Any type may be returned from cross_ref if file indirect entries |
1568 | are corrupted. */ | |
c906108c SS |
1569 | if (TYPE_CODE (tp) != TYPE_CODE_STRUCT |
1570 | && TYPE_CODE (tp) != TYPE_CODE_UNION | |
1571 | && TYPE_CODE (tp) != TYPE_CODE_ENUM) | |
1572 | { | |
23136709 | 1573 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1574 | } |
1575 | else | |
1576 | { | |
1577 | ||
1578 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
1579 | exception is if we guessed wrong re struct/union/enum. | |
1580 | But for struct vs. union a wrong guess is harmless, so | |
1581 | don't complain(). */ | |
1582 | if ((TYPE_CODE (tp) == TYPE_CODE_ENUM | |
1583 | && type_code != TYPE_CODE_ENUM) | |
1584 | || (TYPE_CODE (tp) != TYPE_CODE_ENUM | |
1585 | && type_code == TYPE_CODE_ENUM)) | |
1586 | { | |
23136709 | 1587 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1588 | } |
1589 | ||
1590 | if (TYPE_CODE (tp) != type_code) | |
1591 | { | |
1592 | TYPE_CODE (tp) = type_code; | |
1593 | } | |
1594 | ||
1595 | /* Do not set the tag name if it is a compiler generated tag name | |
c5aa993b | 1596 | (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ |
c906108c SS |
1597 | if (name[0] == '.' || name[0] == '\0') |
1598 | TYPE_TAG_NAME (tp) = NULL; | |
1599 | else if (TYPE_TAG_NAME (tp) == NULL | |
1600 | || !STREQ (TYPE_TAG_NAME (tp), name)) | |
1601 | TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name), | |
c5aa993b | 1602 | ¤t_objfile->type_obstack); |
c906108c SS |
1603 | } |
1604 | } | |
1605 | ||
1606 | /* All these types really point to some (common) MIPS type | |
1607 | definition, and only the type-qualifiers fully identify | |
1608 | them. We'll make the same effort at sharing. | |
1609 | FIXME: We are not doing any guessing on range types. */ | |
1610 | if (t->bt == btRange) | |
1611 | { | |
1612 | char *name; | |
1613 | ||
1614 | /* Try to cross reference this type, build new type on failure. */ | |
1615 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1616 | if (tp == (struct type *) NULL) | |
1617 | tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
1618 | ||
1619 | /* Make sure that TYPE_CODE(tp) has an expected type code. | |
c5aa993b JM |
1620 | Any type may be returned from cross_ref if file indirect entries |
1621 | are corrupted. */ | |
c906108c SS |
1622 | if (TYPE_CODE (tp) != TYPE_CODE_RANGE) |
1623 | { | |
23136709 | 1624 | unexpected_type_code_complaint (sym_name); |
c906108c SS |
1625 | } |
1626 | else | |
1627 | { | |
1628 | /* Usually, TYPE_CODE(tp) is already type_code. The main | |
1629 | exception is if we guessed wrong re struct/union/enum. */ | |
1630 | if (TYPE_CODE (tp) != type_code) | |
1631 | { | |
23136709 | 1632 | bad_tag_guess_complaint (sym_name); |
c906108c SS |
1633 | TYPE_CODE (tp) = type_code; |
1634 | } | |
1635 | if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name)) | |
1636 | TYPE_NAME (tp) = obsavestring (name, strlen (name), | |
1637 | ¤t_objfile->type_obstack); | |
1638 | } | |
1639 | } | |
1640 | if (t->bt == btTypedef) | |
1641 | { | |
1642 | char *name; | |
1643 | ||
1644 | /* Try to cross reference this type, it should succeed. */ | |
1645 | ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); | |
1646 | if (tp == (struct type *) NULL) | |
1647 | { | |
23136709 KB |
1648 | complaint (&symfile_complaints, |
1649 | "unable to cross ref btTypedef for %s", sym_name); | |
c906108c SS |
1650 | tp = mdebug_type_int; |
1651 | } | |
1652 | } | |
1653 | ||
1654 | /* Deal with range types */ | |
1655 | if (t->bt == btRange) | |
1656 | { | |
1657 | TYPE_NFIELDS (tp) = 2; | |
1658 | TYPE_FIELDS (tp) = ((struct field *) | |
1659 | TYPE_ALLOC (tp, 2 * sizeof (struct field))); | |
1660 | TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"), | |
c5aa993b | 1661 | ¤t_objfile->type_obstack); |
c906108c SS |
1662 | TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax); |
1663 | ax++; | |
1664 | TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"), | |
c5aa993b | 1665 | ¤t_objfile->type_obstack); |
c906108c SS |
1666 | TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax); |
1667 | ax++; | |
1668 | } | |
1669 | ||
1670 | /* Parse all the type qualifiers now. If there are more | |
1671 | than 6 the game will continue in the next aux */ | |
1672 | ||
1673 | while (1) | |
1674 | { | |
1675 | #define PARSE_TQ(tq) \ | |
1676 | if (t->tq != tqNil) \ | |
1677 | ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \ | |
1678 | else \ | |
1679 | break; | |
1680 | ||
1681 | PARSE_TQ (tq0); | |
1682 | PARSE_TQ (tq1); | |
1683 | PARSE_TQ (tq2); | |
1684 | PARSE_TQ (tq3); | |
1685 | PARSE_TQ (tq4); | |
1686 | PARSE_TQ (tq5); | |
1687 | #undef PARSE_TQ | |
1688 | ||
1689 | /* mips cc 2.x and gcc never put out continued aux entries. */ | |
1690 | if (!t->continued) | |
1691 | break; | |
1692 | ||
1693 | (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t); | |
1694 | ax++; | |
1695 | } | |
1696 | ||
1697 | /* Complain for illegal continuations due to corrupt aux entries. */ | |
1698 | if (t->continued) | |
23136709 | 1699 | complaint (&symfile_complaints, "illegal TIR continued for %s", sym_name); |
c5aa993b | 1700 | |
c906108c SS |
1701 | return tp; |
1702 | } | |
1703 | ||
1704 | /* Make up a complex type from a basic one. Type is passed by | |
1705 | reference in TPP and side-effected as necessary. The type | |
1706 | qualifier TQ says how to handle the aux symbols at AX for | |
1707 | the symbol SX we are currently analyzing. BIGEND says whether | |
1708 | aux symbols are big-endian or little-endian. | |
1709 | Returns the number of aux symbols we parsed. */ | |
1710 | ||
1711 | static int | |
fba45db2 KB |
1712 | upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend, |
1713 | char *sym_name) | |
c906108c SS |
1714 | { |
1715 | int off; | |
1716 | struct type *t; | |
1717 | ||
1718 | /* Used in array processing */ | |
1719 | int rf, id; | |
1720 | FDR *fh; | |
1721 | struct type *range; | |
1722 | struct type *indx; | |
1723 | int lower, upper; | |
1724 | RNDXR rndx; | |
1725 | ||
1726 | switch (tq) | |
1727 | { | |
1728 | case tqPtr: | |
1729 | t = lookup_pointer_type (*tpp); | |
1730 | *tpp = t; | |
1731 | return 0; | |
1732 | ||
1733 | case tqProc: | |
1734 | t = lookup_function_type (*tpp); | |
1735 | *tpp = t; | |
1736 | return 0; | |
1737 | ||
1738 | case tqArray: | |
1739 | off = 0; | |
1740 | ||
1741 | /* Determine and record the domain type (type of index) */ | |
1742 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx); | |
1743 | id = rndx.index; | |
1744 | rf = rndx.rfd; | |
1745 | if (rf == 0xfff) | |
1746 | { | |
1747 | ax++; | |
1748 | rf = AUX_GET_ISYM (bigend, ax); | |
1749 | off++; | |
1750 | } | |
1751 | fh = get_rfd (fd, rf); | |
1752 | ||
1753 | indx = parse_type (fh - debug_info->fdr, | |
1754 | debug_info->external_aux + fh->iauxBase, | |
1755 | id, (int *) NULL, bigend, sym_name); | |
1756 | ||
1757 | /* The bounds type should be an integer type, but might be anything | |
c5aa993b | 1758 | else due to corrupt aux entries. */ |
c906108c SS |
1759 | if (TYPE_CODE (indx) != TYPE_CODE_INT) |
1760 | { | |
23136709 KB |
1761 | complaint (&symfile_complaints, |
1762 | "illegal array index type for %s, assuming int", sym_name); | |
c906108c SS |
1763 | indx = mdebug_type_int; |
1764 | } | |
1765 | ||
1766 | /* Get the bounds, and create the array type. */ | |
1767 | ax++; | |
1768 | lower = AUX_GET_DNLOW (bigend, ax); | |
1769 | ax++; | |
1770 | upper = AUX_GET_DNHIGH (bigend, ax); | |
1771 | ax++; | |
1772 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ | |
1773 | ||
1774 | range = create_range_type ((struct type *) NULL, indx, | |
1775 | lower, upper); | |
1776 | ||
1777 | t = create_array_type ((struct type *) NULL, *tpp, range); | |
1778 | ||
1779 | /* We used to fill in the supplied array element bitsize | |
c5aa993b JM |
1780 | here if the TYPE_LENGTH of the target type was zero. |
1781 | This happens for a `pointer to an array of anonymous structs', | |
1782 | but in this case the array element bitsize is also zero, | |
1783 | so nothing is gained. | |
1784 | And we used to check the TYPE_LENGTH of the target type against | |
1785 | the supplied array element bitsize. | |
1786 | gcc causes a mismatch for `pointer to array of object', | |
1787 | since the sdb directives it uses do not have a way of | |
1788 | specifying the bitsize, but it does no harm (the | |
1789 | TYPE_LENGTH should be correct) and we should be able to | |
1790 | ignore the erroneous bitsize from the auxiliary entry safely. | |
1791 | dbx seems to ignore it too. */ | |
c906108c SS |
1792 | |
1793 | /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH | |
c5aa993b | 1794 | problem. */ |
c906108c SS |
1795 | if (TYPE_LENGTH (*tpp) == 0) |
1796 | { | |
1797 | TYPE_FLAGS (t) |= TYPE_FLAG_TARGET_STUB; | |
1798 | } | |
1799 | ||
1800 | *tpp = t; | |
1801 | return 4 + off; | |
1802 | ||
1803 | case tqVol: | |
1804 | /* Volatile -- currently ignored */ | |
1805 | return 0; | |
1806 | ||
1807 | case tqConst: | |
1808 | /* Const -- currently ignored */ | |
1809 | return 0; | |
1810 | ||
1811 | default: | |
23136709 | 1812 | complaint (&symfile_complaints, "unknown type qualifier 0x%x", tq); |
c906108c SS |
1813 | return 0; |
1814 | } | |
1815 | } | |
1816 | ||
1817 | ||
1818 | /* Parse a procedure descriptor record PR. Note that the procedure is | |
1819 | parsed _after_ the local symbols, now we just insert the extra | |
1820 | information we need into a MIPS_EFI_SYMBOL_NAME symbol that has | |
1821 | already been placed in the procedure's main block. Note also that | |
1822 | images that have been partially stripped (ld -x) have been deprived | |
1823 | of local symbols, and we have to cope with them here. FIRST_OFF is | |
1824 | the offset of the first procedure for this FDR; we adjust the | |
1825 | address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab | |
1826 | to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol | |
1827 | in question, or NULL to use top_stack->cur_block. */ | |
1828 | ||
a14ed312 | 1829 | static void parse_procedure (PDR *, struct symtab *, struct partial_symtab *); |
c906108c SS |
1830 | |
1831 | static void | |
fba45db2 KB |
1832 | parse_procedure (PDR *pr, struct symtab *search_symtab, |
1833 | struct partial_symtab *pst) | |
c906108c SS |
1834 | { |
1835 | struct symbol *s, *i; | |
1836 | struct block *b; | |
1837 | struct mips_extra_func_info *e; | |
1838 | char *sh_name; | |
1839 | ||
1840 | /* Simple rule to find files linked "-x" */ | |
1841 | if (cur_fdr->rss == -1) | |
1842 | { | |
1843 | if (pr->isym == -1) | |
1844 | { | |
1845 | /* Static procedure at address pr->adr. Sigh. */ | |
1846 | /* FIXME-32x64. assuming pr->adr fits in long. */ | |
23136709 KB |
1847 | complaint (&symfile_complaints, |
1848 | "can't handle PDR for static proc at 0x%lx", | |
1849 | (unsigned long) pr->adr); | |
c906108c SS |
1850 | return; |
1851 | } | |
1852 | else | |
1853 | { | |
1854 | /* external */ | |
1855 | EXTR she; | |
c5aa993b | 1856 | |
c906108c SS |
1857 | (*debug_swap->swap_ext_in) (cur_bfd, |
1858 | ((char *) debug_info->external_ext | |
1859 | + (pr->isym | |
1860 | * debug_swap->external_ext_size)), | |
1861 | &she); | |
1862 | sh_name = debug_info->ssext + she.asym.iss; | |
1863 | } | |
1864 | } | |
1865 | else | |
1866 | { | |
1867 | /* Full symbols */ | |
1868 | SYMR sh; | |
1869 | ||
1870 | (*debug_swap->swap_sym_in) (cur_bfd, | |
1871 | ((char *) debug_info->external_sym | |
1872 | + ((cur_fdr->isymBase + pr->isym) | |
1873 | * debug_swap->external_sym_size)), | |
1874 | &sh); | |
1875 | sh_name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
1876 | } | |
1877 | ||
1878 | if (search_symtab != NULL) | |
1879 | { | |
1880 | #if 0 | |
1881 | /* This loses both in the case mentioned (want a static, find a global), | |
c5aa993b JM |
1882 | but also if we are looking up a non-mangled name which happens to |
1883 | match the name of a mangled function. */ | |
c906108c | 1884 | /* We have to save the cur_fdr across the call to lookup_symbol. |
c5aa993b JM |
1885 | If the pdr is for a static function and if a global function with |
1886 | the same name exists, lookup_symbol will eventually read in the symtab | |
1887 | for the global function and clobber cur_fdr. */ | |
c906108c SS |
1888 | FDR *save_cur_fdr = cur_fdr; |
1889 | s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL); | |
1890 | cur_fdr = save_cur_fdr; | |
1891 | #else | |
1892 | s = mylookup_symbol | |
1893 | (sh_name, | |
1894 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK), | |
1895 | VAR_NAMESPACE, | |
1896 | LOC_BLOCK); | |
1897 | #endif | |
1898 | } | |
1899 | else | |
1900 | s = mylookup_symbol (sh_name, top_stack->cur_block, | |
1901 | VAR_NAMESPACE, LOC_BLOCK); | |
1902 | ||
1903 | if (s != 0) | |
1904 | { | |
1905 | b = SYMBOL_BLOCK_VALUE (s); | |
1906 | } | |
1907 | else | |
1908 | { | |
23136709 | 1909 | complaint (&symfile_complaints, "PDR for %s, but no symbol", sh_name); |
c906108c SS |
1910 | #if 1 |
1911 | return; | |
1912 | #else | |
1913 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ | |
1914 | s = new_symbol (sh_name); | |
1915 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
1916 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
1917 | /* Donno its type, hope int is ok */ | |
1918 | SYMBOL_TYPE (s) = lookup_function_type (mdebug_type_int); | |
1919 | add_symbol (s, top_stack->cur_block); | |
1920 | /* Wont have symbols for this one */ | |
1921 | b = new_block (2); | |
1922 | SYMBOL_BLOCK_VALUE (s) = b; | |
1923 | BLOCK_FUNCTION (b) = s; | |
1924 | BLOCK_START (b) = pr->adr; | |
1925 | /* BOUND used to be the end of procedure's text, but the | |
c5aa993b | 1926 | argument is no longer passed in. */ |
c906108c SS |
1927 | BLOCK_END (b) = bound; |
1928 | BLOCK_SUPERBLOCK (b) = top_stack->cur_block; | |
1929 | add_block (b, top_stack->cur_st); | |
1930 | #endif | |
1931 | } | |
1932 | ||
1933 | i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST); | |
1934 | ||
1935 | if (i) | |
1936 | { | |
1937 | e = (struct mips_extra_func_info *) SYMBOL_VALUE (i); | |
1938 | e->pdr = *pr; | |
1939 | e->pdr.isym = (long) s; | |
1940 | ||
1941 | /* GDB expects the absolute function start address for the | |
c5aa993b JM |
1942 | procedure descriptor in e->pdr.adr. |
1943 | As the address in the procedure descriptor is usually relative, | |
1944 | we would have to relocate e->pdr.adr with cur_fdr->adr and | |
b8fbeb18 | 1945 | ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)). |
c5aa993b JM |
1946 | Unfortunately cur_fdr->adr and e->pdr.adr are both absolute |
1947 | in shared libraries on some systems, and on other systems | |
1948 | e->pdr.adr is sometimes offset by a bogus value. | |
1949 | To work around these problems, we replace e->pdr.adr with | |
1950 | the start address of the function. */ | |
c906108c SS |
1951 | e->pdr.adr = BLOCK_START (b); |
1952 | ||
1953 | /* Correct incorrect setjmp procedure descriptor from the library | |
c5aa993b | 1954 | to make backtrace through setjmp work. */ |
c906108c SS |
1955 | if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp")) |
1956 | { | |
23136709 | 1957 | complaint (&symfile_complaints, "fixing bad setjmp PDR from libc"); |
c906108c SS |
1958 | e->pdr.pcreg = RA_REGNUM; |
1959 | e->pdr.regmask = 0x80000000; | |
1960 | e->pdr.regoffset = -4; | |
1961 | } | |
1962 | } | |
1963 | ||
1964 | /* It would be reasonable that functions that have been compiled | |
1965 | without debugging info have a btNil type for their return value, | |
1966 | and functions that are void and are compiled with debugging info | |
1967 | have btVoid. | |
1968 | gcc and DEC f77 put out btNil types for both cases, so btNil is mapped | |
1969 | to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info' | |
1970 | case right. | |
1971 | The glevel field in cur_fdr could be used to determine the presence | |
1972 | of debugging info, but GCC doesn't always pass the -g switch settings | |
1973 | to the assembler and GAS doesn't set the glevel field from the -g switch | |
1974 | settings. | |
1975 | To work around these problems, the return value type of a TYPE_CODE_VOID | |
1976 | function is adjusted accordingly if no debugging info was found in the | |
1977 | compilation unit. */ | |
c5aa993b | 1978 | |
c906108c SS |
1979 | if (processing_gcc_compilation == 0 |
1980 | && found_ecoff_debugging_info == 0 | |
1981 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID) | |
1982 | SYMBOL_TYPE (s) = nodebug_func_symbol_type; | |
1983 | } | |
1984 | ||
1985 | /* Relocate the extra function info pointed to by the symbol table. */ | |
1986 | ||
1987 | void | |
fba45db2 | 1988 | ecoff_relocate_efi (struct symbol *sym, CORE_ADDR delta) |
c906108c SS |
1989 | { |
1990 | struct mips_extra_func_info *e; | |
1991 | ||
1992 | e = (struct mips_extra_func_info *) SYMBOL_VALUE (sym); | |
c5aa993b | 1993 | |
c906108c SS |
1994 | e->pdr.adr += delta; |
1995 | } | |
1996 | ||
1997 | /* Parse the external symbol ES. Just call parse_symbol() after | |
1998 | making sure we know where the aux are for it. | |
1999 | BIGEND says whether aux entries are big-endian or little-endian. | |
2000 | ||
2001 | This routine clobbers top_stack->cur_block and ->cur_st. */ | |
2002 | ||
a14ed312 KB |
2003 | static void parse_external (EXTR *, int, struct section_offsets *, |
2004 | struct objfile *); | |
c906108c SS |
2005 | |
2006 | static void | |
fba45db2 KB |
2007 | parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets, |
2008 | struct objfile *objfile) | |
c906108c SS |
2009 | { |
2010 | union aux_ext *ax; | |
2011 | ||
2012 | if (es->ifd != ifdNil) | |
2013 | { | |
2014 | cur_fd = es->ifd; | |
2015 | cur_fdr = debug_info->fdr + cur_fd; | |
2016 | ax = debug_info->external_aux + cur_fdr->iauxBase; | |
2017 | } | |
2018 | else | |
2019 | { | |
2020 | cur_fdr = debug_info->fdr; | |
2021 | ax = 0; | |
2022 | } | |
2023 | ||
2024 | /* Reading .o files */ | |
c5aa993b | 2025 | if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil) |
c906108c SS |
2026 | { |
2027 | char *what; | |
2028 | switch (es->asym.st) | |
2029 | { | |
2030 | case stNil: | |
2031 | /* These are generated for static symbols in .o files, | |
2032 | ignore them. */ | |
2033 | return; | |
2034 | case stStaticProc: | |
2035 | case stProc: | |
2036 | what = "procedure"; | |
2037 | n_undef_procs++; | |
2038 | break; | |
2039 | case stGlobal: | |
2040 | what = "variable"; | |
2041 | n_undef_vars++; | |
2042 | break; | |
2043 | case stLabel: | |
2044 | what = "label"; | |
2045 | n_undef_labels++; | |
2046 | break; | |
2047 | default: | |
2048 | what = "symbol"; | |
2049 | break; | |
2050 | } | |
2051 | n_undef_symbols++; | |
2052 | /* FIXME: Turn this into a complaint? */ | |
2053 | if (info_verbose) | |
2054 | printf_filtered ("Warning: %s `%s' is undefined (in %s)\n", | |
2055 | what, debug_info->ssext + es->asym.iss, | |
2056 | fdr_name (cur_fdr)); | |
2057 | return; | |
2058 | } | |
2059 | ||
2060 | switch (es->asym.st) | |
2061 | { | |
2062 | case stProc: | |
2063 | case stStaticProc: | |
2064 | /* There is no need to parse the external procedure symbols. | |
c5aa993b JM |
2065 | If they are from objects compiled without -g, their index will |
2066 | be indexNil, and the symbol definition from the minimal symbol | |
2067 | is preferrable (yielding a function returning int instead of int). | |
2068 | If the index points to a local procedure symbol, the local | |
2069 | symbol already provides the correct type. | |
2070 | Note that the index of the external procedure symbol points | |
2071 | to the local procedure symbol in the local symbol table, and | |
2072 | _not_ to the auxiliary symbol info. */ | |
c906108c SS |
2073 | break; |
2074 | case stGlobal: | |
2075 | case stLabel: | |
2076 | /* Global common symbols are resolved by the runtime loader, | |
c5aa993b JM |
2077 | ignore them. */ |
2078 | if (SC_IS_COMMON (es->asym.sc)) | |
c906108c SS |
2079 | break; |
2080 | ||
2081 | /* Note that the case of a symbol with indexNil must be handled | |
c5aa993b | 2082 | anyways by parse_symbol(). */ |
b8fbeb18 | 2083 | parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets, objfile); |
c906108c SS |
2084 | break; |
2085 | default: | |
2086 | break; | |
2087 | } | |
2088 | } | |
2089 | ||
2090 | /* Parse the line number info for file descriptor FH into | |
2091 | GDB's linetable LT. MIPS' encoding requires a little bit | |
2092 | of magic to get things out. Note also that MIPS' line | |
2093 | numbers can go back and forth, apparently we can live | |
2094 | with that and do not need to reorder our linetables */ | |
2095 | ||
a14ed312 KB |
2096 | static void parse_lines (FDR *, PDR *, struct linetable *, int, |
2097 | struct partial_symtab *, CORE_ADDR); | |
c906108c SS |
2098 | |
2099 | static void | |
fba45db2 KB |
2100 | parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines, |
2101 | struct partial_symtab *pst, CORE_ADDR lowest_pdr_addr) | |
c906108c SS |
2102 | { |
2103 | unsigned char *base; | |
2104 | int j, k; | |
2105 | int delta, count, lineno = 0; | |
2106 | ||
2107 | if (fh->cbLine == 0) | |
2108 | return; | |
2109 | ||
2110 | /* Scan by procedure descriptors */ | |
2111 | k = 0; | |
2112 | for (j = 0; j < fh->cpd; j++, pr++) | |
2113 | { | |
2114 | CORE_ADDR l; | |
2115 | CORE_ADDR adr; | |
2116 | unsigned char *halt; | |
2117 | ||
2118 | /* No code for this one */ | |
2119 | if (pr->iline == ilineNil || | |
2120 | pr->lnLow == -1 || pr->lnHigh == -1) | |
2121 | continue; | |
2122 | ||
2123 | /* Determine start and end address of compressed line bytes for | |
c5aa993b | 2124 | this procedure. */ |
c906108c SS |
2125 | base = debug_info->line + fh->cbLineOffset; |
2126 | if (j != (fh->cpd - 1)) | |
c5aa993b | 2127 | halt = base + pr[1].cbLineOffset; |
c906108c | 2128 | else |
c5aa993b | 2129 | halt = base + fh->cbLine; |
c906108c SS |
2130 | base += pr->cbLineOffset; |
2131 | ||
5afc051b | 2132 | adr = pst->textlow + pr->adr - lowest_pdr_addr; |
c906108c SS |
2133 | |
2134 | l = adr >> 2; /* in words */ | |
c5aa993b | 2135 | for (lineno = pr->lnLow; base < halt;) |
c906108c SS |
2136 | { |
2137 | count = *base & 0x0f; | |
2138 | delta = *base++ >> 4; | |
2139 | if (delta >= 8) | |
2140 | delta -= 16; | |
2141 | if (delta == -8) | |
2142 | { | |
2143 | delta = (base[0] << 8) | base[1]; | |
2144 | if (delta >= 0x8000) | |
2145 | delta -= 0x10000; | |
2146 | base += 2; | |
2147 | } | |
2148 | lineno += delta; /* first delta is 0 */ | |
2149 | ||
2150 | /* Complain if the line table overflows. Could happen | |
2151 | with corrupt binaries. */ | |
2152 | if (lt->nitems >= maxlines) | |
2153 | { | |
23136709 KB |
2154 | complaint (&symfile_complaints, |
2155 | "guessed size of linetable for %s incorrectly", | |
2156 | fdr_name (fh)); | |
c906108c SS |
2157 | break; |
2158 | } | |
2159 | k = add_line (lt, lineno, l, k); | |
2160 | l += count + 1; | |
2161 | } | |
2162 | } | |
2163 | } | |
2164 | \f | |
23136709 KB |
2165 | static void |
2166 | function_outside_compilation_unit_complaint (const char *arg1) | |
2167 | { | |
2168 | complaint (&symfile_complaints, | |
2169 | "function `%s' appears to be defined outside of all compilation units", | |
2170 | arg1); | |
2171 | } | |
2172 | ||
c906108c SS |
2173 | /* Master parsing procedure for first-pass reading of file symbols |
2174 | into a partial_symtab. */ | |
2175 | ||
2176 | static void | |
fba45db2 | 2177 | parse_partial_symbols (struct objfile *objfile) |
c906108c SS |
2178 | { |
2179 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
2180 | const bfd_size_type external_rfd_size = debug_swap->external_rfd_size; | |
2181 | const bfd_size_type external_ext_size = debug_swap->external_ext_size; | |
12b9c64f AO |
2182 | void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in; |
2183 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; | |
2184 | void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in; | |
c906108c SS |
2185 | int f_idx, s_idx; |
2186 | HDRR *hdr = &debug_info->symbolic_header; | |
2187 | /* Running pointers */ | |
2188 | FDR *fh; | |
2189 | char *ext_out; | |
2190 | char *ext_out_end; | |
2191 | EXTR *ext_block; | |
2192 | register EXTR *ext_in; | |
2193 | EXTR *ext_in_end; | |
2194 | SYMR sh; | |
2195 | struct partial_symtab *pst; | |
2196 | int textlow_not_set = 1; | |
2197 | int past_first_source_file = 0; | |
2198 | ||
2199 | /* List of current psymtab's include files */ | |
2200 | char **psymtab_include_list; | |
2201 | int includes_allocated; | |
2202 | int includes_used; | |
2203 | EXTR *extern_tab; | |
2204 | struct pst_map *fdr_to_pst; | |
2205 | /* Index within current psymtab dependency list */ | |
2206 | struct partial_symtab **dependency_list; | |
2207 | int dependencies_used, dependencies_allocated; | |
2208 | struct cleanup *old_chain; | |
2209 | char *name; | |
2210 | enum language prev_language; | |
2211 | asection *text_sect; | |
2212 | int relocatable = 0; | |
2213 | ||
2214 | /* Irix 5.2 shared libraries have a fh->adr field of zero, but | |
2215 | the shared libraries are prelinked at a high memory address. | |
2216 | We have to adjust the start address of the object file for this case, | |
2217 | by setting it to the start address of the first procedure in the file. | |
2218 | But we should do no adjustments if we are debugging a .o file, where | |
2219 | the text section (and fh->adr) really starts at zero. */ | |
2220 | text_sect = bfd_get_section_by_name (cur_bfd, ".text"); | |
2221 | if (text_sect != NULL | |
2222 | && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC)) | |
2223 | relocatable = 1; | |
2224 | ||
2225 | extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack, | |
2226 | sizeof (EXTR) * hdr->iextMax); | |
2227 | ||
2228 | includes_allocated = 30; | |
2229 | includes_used = 0; | |
2230 | psymtab_include_list = (char **) alloca (includes_allocated * | |
2231 | sizeof (char *)); | |
2232 | next_symbol_text_func = mdebug_next_symbol_text; | |
2233 | ||
2234 | dependencies_allocated = 30; | |
2235 | dependencies_used = 0; | |
2236 | dependency_list = | |
2237 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2238 | sizeof (struct partial_symtab *)); | |
2239 | ||
2240 | last_source_file = NULL; | |
2241 | ||
2242 | /* | |
2243 | * Big plan: | |
2244 | * | |
2245 | * Only parse the Local and External symbols, and the Relative FDR. | |
2246 | * Fixup enough of the loader symtab to be able to use it. | |
2247 | * Allocate space only for the file's portions we need to | |
2248 | * look at. (XXX) | |
2249 | */ | |
2250 | ||
2251 | max_gdbinfo = 0; | |
2252 | max_glevel = MIN_GLEVEL; | |
2253 | ||
2254 | /* Allocate the map FDR -> PST. | |
2255 | Minor hack: -O3 images might claim some global data belongs | |
2256 | to FDR -1. We`ll go along with that */ | |
2257 | fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst); | |
b8c9b27d | 2258 | old_chain = make_cleanup (xfree, fdr_to_pst); |
c906108c SS |
2259 | fdr_to_pst++; |
2260 | { | |
d4f3574e | 2261 | struct partial_symtab *pst = new_psymtab ("", objfile); |
c906108c SS |
2262 | fdr_to_pst[-1].pst = pst; |
2263 | FDR_IDX (pst) = -1; | |
2264 | } | |
2265 | ||
2266 | /* Allocate the global pending list. */ | |
2267 | pending_list = | |
2268 | ((struct mdebug_pending **) | |
2269 | obstack_alloc (&objfile->psymbol_obstack, | |
2270 | hdr->ifdMax * sizeof (struct mdebug_pending *))); | |
12b9c64f | 2271 | memset (pending_list, 0, |
c906108c SS |
2272 | hdr->ifdMax * sizeof (struct mdebug_pending *)); |
2273 | ||
2274 | /* Pass 0 over external syms: swap them in. */ | |
2275 | ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR)); | |
b8c9b27d | 2276 | make_cleanup (xfree, ext_block); |
c906108c SS |
2277 | |
2278 | ext_out = (char *) debug_info->external_ext; | |
2279 | ext_out_end = ext_out + hdr->iextMax * external_ext_size; | |
2280 | ext_in = ext_block; | |
2281 | for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) | |
2282 | (*swap_ext_in) (cur_bfd, ext_out, ext_in); | |
2283 | ||
2284 | /* Pass 1 over external syms: Presize and partition the list */ | |
2285 | ext_in = ext_block; | |
2286 | ext_in_end = ext_in + hdr->iextMax; | |
2287 | for (; ext_in < ext_in_end; ext_in++) | |
2288 | { | |
2289 | /* See calls to complain below. */ | |
2290 | if (ext_in->ifd >= -1 | |
2291 | && ext_in->ifd < hdr->ifdMax | |
2292 | && ext_in->asym.iss >= 0 | |
2293 | && ext_in->asym.iss < hdr->issExtMax) | |
2294 | fdr_to_pst[ext_in->ifd].n_globals++; | |
2295 | } | |
2296 | ||
2297 | /* Pass 1.5 over files: partition out global symbol space */ | |
2298 | s_idx = 0; | |
2299 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) | |
2300 | { | |
2301 | fdr_to_pst[f_idx].globals_offset = s_idx; | |
2302 | s_idx += fdr_to_pst[f_idx].n_globals; | |
2303 | fdr_to_pst[f_idx].n_globals = 0; | |
2304 | } | |
2305 | ||
2306 | /* ECOFF in ELF: | |
2307 | ||
2308 | For ECOFF in ELF, we skip the creation of the minimal symbols. | |
2309 | The ECOFF symbols should be a subset of the Elf symbols, and the | |
2310 | section information of the elf symbols will be more accurate. | |
2311 | FIXME! What about Irix 5's native linker? | |
2312 | ||
2313 | By default, Elf sections which don't exist in ECOFF | |
2314 | get put in ECOFF's absolute section by the gnu linker. | |
2315 | Since absolute sections don't get relocated, we | |
2316 | end up calculating an address different from that of | |
2317 | the symbol's minimal symbol (created earlier from the | |
2318 | Elf symtab). | |
2319 | ||
2320 | To fix this, either : | |
2321 | 1) don't create the duplicate symbol | |
c5aa993b JM |
2322 | (assumes ECOFF symtab is a subset of the ELF symtab; |
2323 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2324 | 2) create it, only if lookup for existing symbol in ELF's minimal |
c5aa993b JM |
2325 | symbols fails |
2326 | (inefficient; | |
2327 | assumes no side-effects result from ignoring ECOFF symbol) | |
c906108c | 2328 | 3) create it, but lookup ELF's minimal symbol and use it's section |
c5aa993b JM |
2329 | during relocation, then modify "uniqify" phase to merge and |
2330 | eliminate the duplicate symbol | |
2331 | (highly inefficient) | |
c906108c SS |
2332 | |
2333 | I've implemented #1 here... | |
2334 | Skip the creation of the minimal symbols based on the ECOFF | |
2335 | symbol table. */ | |
2336 | ||
c5aa993b JM |
2337 | /* Pass 2 over external syms: fill in external symbols */ |
2338 | ext_in = ext_block; | |
2339 | ext_in_end = ext_in + hdr->iextMax; | |
2340 | for (; ext_in < ext_in_end; ext_in++) | |
2341 | { | |
2342 | enum minimal_symbol_type ms_type = mst_text; | |
2343 | CORE_ADDR svalue = ext_in->asym.value; | |
c906108c | 2344 | |
c5aa993b JM |
2345 | /* The Irix 5 native tools seem to sometimes generate bogus |
2346 | external symbols. */ | |
2347 | if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax) | |
2348 | { | |
23136709 KB |
2349 | complaint (&symfile_complaints, |
2350 | "bad ifd for external symbol: %d (max %ld)", ext_in->ifd, | |
2351 | hdr->ifdMax); | |
c5aa993b JM |
2352 | continue; |
2353 | } | |
2354 | if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax) | |
2355 | { | |
23136709 KB |
2356 | complaint (&symfile_complaints, |
2357 | "bad iss for external symbol: %ld (max %ld)", | |
2358 | ext_in->asym.iss, hdr->issExtMax); | |
c5aa993b JM |
2359 | continue; |
2360 | } | |
c906108c | 2361 | |
c5aa993b JM |
2362 | extern_tab[fdr_to_pst[ext_in->ifd].globals_offset |
2363 | + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; | |
c906108c SS |
2364 | |
2365 | ||
c5aa993b JM |
2366 | if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil) |
2367 | continue; | |
c906108c | 2368 | |
c906108c | 2369 | |
c5aa993b JM |
2370 | /* Pass 3 over files, over local syms: fill in static symbols */ |
2371 | name = debug_info->ssext + ext_in->asym.iss; | |
2372 | ||
2373 | /* Process ECOFF Symbol Types and Storage Classes */ | |
2374 | switch (ext_in->asym.st) | |
2375 | { | |
2376 | case stProc: | |
2377 | /* Beginnning of Procedure */ | |
b8fbeb18 | 2378 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2379 | break; |
2380 | case stStaticProc: | |
2381 | /* Load time only static procs */ | |
2382 | ms_type = mst_file_text; | |
b8fbeb18 | 2383 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2384 | break; |
2385 | case stGlobal: | |
2386 | /* External symbol */ | |
2387 | if (SC_IS_COMMON (ext_in->asym.sc)) | |
2388 | { | |
2389 | /* The value of a common symbol is its size, not its address. | |
2390 | Ignore it. */ | |
c906108c | 2391 | continue; |
c5aa993b JM |
2392 | } |
2393 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2394 | { | |
2395 | ms_type = mst_data; | |
b8fbeb18 | 2396 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c5aa993b JM |
2397 | } |
2398 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2399 | { | |
2400 | ms_type = mst_bss; | |
b8fbeb18 | 2401 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c5aa993b | 2402 | } |
0e931cf0 JB |
2403 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2404 | { | |
2405 | ms_type = mst_bss; | |
2406 | svalue += ANOFFSET (objfile->section_offsets, | |
2407 | get_section_index (objfile, ".sbss")); | |
2408 | } | |
c5aa993b JM |
2409 | else |
2410 | ms_type = mst_abs; | |
2411 | break; | |
2412 | case stLabel: | |
2413 | /* Label */ | |
0e931cf0 JB |
2414 | |
2415 | /* On certain platforms, some extra label symbols can be | |
2416 | generated by the linker. One possible usage for this kind | |
2417 | of symbols is to represent the address of the begining of a | |
2418 | given section. For instance, on Tru64 5.1, the address of | |
2419 | the _ftext label is the start address of the .text section. | |
2420 | ||
2421 | The storage class of these symbols is usually directly | |
2422 | related to the section to which the symbol refers. For | |
2423 | instance, on Tru64 5.1, the storage class for the _fdata | |
2424 | label is scData, refering to the .data section. | |
2425 | ||
2426 | It is actually possible that the section associated to the | |
2427 | storage class of the label does not exist. On True64 5.1 | |
2428 | for instance, the libm.so shared library does not contain | |
2429 | any .data section, although it contains a _fpdata label | |
2430 | which storage class is scData... Since these symbols are | |
2431 | usually useless for the debugger user anyway, we just | |
2432 | discard these symbols. | |
2433 | */ | |
2434 | ||
c5aa993b JM |
2435 | if (SC_IS_TEXT (ext_in->asym.sc)) |
2436 | { | |
0e931cf0 JB |
2437 | if (objfile->sect_index_text == -1) |
2438 | continue; | |
2439 | ||
c5aa993b | 2440 | ms_type = mst_file_text; |
b8fbeb18 | 2441 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c5aa993b JM |
2442 | } |
2443 | else if (SC_IS_DATA (ext_in->asym.sc)) | |
2444 | { | |
0e931cf0 JB |
2445 | if (objfile->sect_index_data == -1) |
2446 | continue; | |
2447 | ||
c5aa993b | 2448 | ms_type = mst_file_data; |
b8fbeb18 | 2449 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c5aa993b JM |
2450 | } |
2451 | else if (SC_IS_BSS (ext_in->asym.sc)) | |
2452 | { | |
0e931cf0 JB |
2453 | if (objfile->sect_index_bss == -1) |
2454 | continue; | |
2455 | ||
c5aa993b | 2456 | ms_type = mst_file_bss; |
b8fbeb18 | 2457 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c5aa993b | 2458 | } |
0e931cf0 JB |
2459 | else if (SC_IS_SBSS (ext_in->asym.sc)) |
2460 | { | |
2461 | const int sbss_sect_index = get_section_index (objfile, ".sbss"); | |
2462 | ||
2463 | if (sbss_sect_index == -1) | |
2464 | continue; | |
2465 | ||
2466 | ms_type = mst_file_bss; | |
2467 | svalue += ANOFFSET (objfile->section_offsets, sbss_sect_index); | |
2468 | } | |
c5aa993b JM |
2469 | else |
2470 | ms_type = mst_abs; | |
2471 | break; | |
2472 | case stLocal: | |
2473 | case stNil: | |
2474 | /* The alpha has the section start addresses in stLocal symbols | |
2475 | whose name starts with a `.'. Skip those but complain for all | |
2476 | other stLocal symbols. | |
2477 | Irix6 puts the section start addresses in stNil symbols, skip | |
2478 | those too. */ | |
2479 | if (name[0] == '.') | |
2480 | continue; | |
2481 | /* Fall through. */ | |
2482 | default: | |
2483 | ms_type = mst_unknown; | |
23136709 | 2484 | unknown_ext_complaint (name); |
c5aa993b JM |
2485 | } |
2486 | if (!ECOFF_IN_ELF (cur_bfd)) | |
2487 | prim_record_minimal_symbol (name, svalue, ms_type, objfile); | |
2488 | } | |
c906108c SS |
2489 | |
2490 | /* Pass 3 over files, over local syms: fill in static symbols */ | |
2491 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) | |
2492 | { | |
2493 | struct partial_symtab *save_pst; | |
2494 | EXTR *ext_ptr; | |
2495 | CORE_ADDR textlow; | |
2496 | ||
2497 | cur_fdr = fh = debug_info->fdr + f_idx; | |
2498 | ||
2499 | if (fh->csym == 0) | |
2500 | { | |
2501 | fdr_to_pst[f_idx].pst = NULL; | |
2502 | continue; | |
2503 | } | |
2504 | ||
2505 | /* Determine the start address for this object file from the | |
c5aa993b | 2506 | file header and relocate it, except for Irix 5.2 zero fh->adr. */ |
c906108c SS |
2507 | if (fh->cpd) |
2508 | { | |
2509 | textlow = fh->adr; | |
2510 | if (relocatable || textlow != 0) | |
b8fbeb18 | 2511 | textlow += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2512 | } |
2513 | else | |
2514 | textlow = 0; | |
d4f3574e | 2515 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
c906108c SS |
2516 | fdr_name (fh), |
2517 | textlow, | |
2518 | objfile->global_psymbols.next, | |
2519 | objfile->static_psymbols.next); | |
2520 | pst->read_symtab_private = ((char *) | |
2521 | obstack_alloc (&objfile->psymbol_obstack, | |
2522 | sizeof (struct symloc))); | |
12b9c64f | 2523 | memset (pst->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
2524 | |
2525 | save_pst = pst; | |
2526 | FDR_IDX (pst) = f_idx; | |
2527 | CUR_BFD (pst) = cur_bfd; | |
2528 | DEBUG_SWAP (pst) = debug_swap; | |
2529 | DEBUG_INFO (pst) = debug_info; | |
2530 | PENDING_LIST (pst) = pending_list; | |
2531 | ||
2532 | /* The way to turn this into a symtab is to call... */ | |
2533 | pst->read_symtab = mdebug_psymtab_to_symtab; | |
2534 | ||
2535 | /* Set up language for the pst. | |
2536 | The language from the FDR is used if it is unambigious (e.g. cfront | |
c5aa993b JM |
2537 | with native cc and g++ will set the language to C). |
2538 | Otherwise we have to deduce the language from the filename. | |
2539 | Native ecoff has every header file in a separate FDR, so | |
2540 | deduce_language_from_filename will return language_unknown for | |
2541 | a header file, which is not what we want. | |
2542 | But the FDRs for the header files are after the FDR for the source | |
2543 | file, so we can assign the language of the source file to the | |
2544 | following header files. Then we save the language in the private | |
2545 | pst data so that we can reuse it when building symtabs. */ | |
c906108c SS |
2546 | prev_language = psymtab_language; |
2547 | ||
2548 | switch (fh->lang) | |
2549 | { | |
2550 | case langCplusplusV2: | |
2551 | psymtab_language = language_cplus; | |
2552 | break; | |
2553 | default: | |
2554 | psymtab_language = deduce_language_from_filename (fdr_name (fh)); | |
2555 | break; | |
2556 | } | |
2557 | if (psymtab_language == language_unknown) | |
2558 | psymtab_language = prev_language; | |
2559 | PST_PRIVATE (pst)->pst_language = psymtab_language; | |
2560 | ||
5afc051b | 2561 | pst->texthigh = pst->textlow; |
c906108c SS |
2562 | |
2563 | /* For stabs-in-ecoff files, the second symbol must be @stab. | |
c5aa993b JM |
2564 | This symbol is emitted by mips-tfile to signal that the |
2565 | current object file uses encapsulated stabs instead of mips | |
2566 | ecoff for local symbols. (It is the second symbol because | |
2567 | the first symbol is the stFile used to signal the start of a | |
2568 | file). */ | |
c906108c SS |
2569 | processing_gcc_compilation = 0; |
2570 | if (fh->csym >= 2) | |
2571 | { | |
2572 | (*swap_sym_in) (cur_bfd, | |
2573 | ((char *) debug_info->external_sym | |
2574 | + (fh->isymBase + 1) * external_sym_size), | |
2575 | &sh); | |
2576 | if (STREQ (debug_info->ss + fh->issBase + sh.iss, stabs_symbol)) | |
2577 | processing_gcc_compilation = 2; | |
2578 | } | |
2579 | ||
2580 | if (processing_gcc_compilation != 0) | |
2581 | { | |
2582 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
2583 | { | |
2584 | int type_code; | |
2585 | char *namestring; | |
2586 | ||
2587 | (*swap_sym_in) (cur_bfd, | |
2588 | (((char *) debug_info->external_sym) | |
c5aa993b | 2589 | + (fh->isymBase + cur_sdx) * external_sym_size), |
c906108c SS |
2590 | &sh); |
2591 | type_code = ECOFF_UNMARK_STAB (sh.index); | |
2592 | if (!ECOFF_IS_STAB (&sh)) | |
2593 | { | |
2594 | if (sh.st == stProc || sh.st == stStaticProc) | |
2595 | { | |
2596 | CORE_ADDR procaddr; | |
2597 | long isym; | |
c5aa993b | 2598 | |
b8fbeb18 | 2599 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2600 | if (sh.st == stStaticProc) |
2601 | { | |
2602 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
2603 | prim_record_minimal_symbol_and_info (namestring, | |
2604 | sh.value, | |
2605 | mst_file_text, | |
2606 | NULL, | |
b8fbeb18 | 2607 | SECT_OFF_TEXT (objfile), |
c906108c SS |
2608 | NULL, |
2609 | objfile); | |
2610 | } | |
2611 | procaddr = sh.value; | |
2612 | ||
2613 | isym = AUX_GET_ISYM (fh->fBigendian, | |
2614 | (debug_info->external_aux | |
2615 | + fh->iauxBase | |
2616 | + sh.index)); | |
2617 | (*swap_sym_in) (cur_bfd, | |
2618 | ((char *) debug_info->external_sym | |
2619 | + ((fh->isymBase + isym - 1) | |
2620 | * external_sym_size)), | |
2621 | &sh); | |
2622 | if (sh.st == stEnd) | |
2623 | { | |
2624 | CORE_ADDR high = procaddr + sh.value; | |
2625 | ||
c5aa993b | 2626 | /* Kludge for Irix 5.2 zero fh->adr. */ |
c906108c | 2627 | if (!relocatable |
5afc051b JB |
2628 | && (pst->textlow == 0 || procaddr < pst->textlow)) |
2629 | pst->textlow = procaddr; | |
2630 | if (high > pst->texthigh) | |
2631 | pst->texthigh = high; | |
c906108c SS |
2632 | } |
2633 | } | |
2634 | else if (sh.st == stStatic) | |
2635 | { | |
2636 | switch (sh.sc) | |
2637 | { | |
2638 | case scUndefined: | |
2639 | case scSUndefined: | |
2640 | case scNil: | |
2641 | case scAbs: | |
2642 | break; | |
2643 | ||
2644 | case scData: | |
2645 | case scSData: | |
2646 | case scRData: | |
2647 | case scPData: | |
2648 | case scXData: | |
2649 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
b8fbeb18 | 2650 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
2651 | prim_record_minimal_symbol_and_info (namestring, |
2652 | sh.value, | |
2653 | mst_file_data, | |
2654 | NULL, | |
b8fbeb18 | 2655 | SECT_OFF_DATA (objfile), |
c906108c SS |
2656 | NULL, |
2657 | objfile); | |
2658 | break; | |
2659 | ||
2660 | default: | |
2661 | /* FIXME! Shouldn't this use cases for bss, | |
2662 | then have the default be abs? */ | |
2663 | namestring = debug_info->ss + fh->issBase + sh.iss; | |
b8fbeb18 | 2664 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
2665 | prim_record_minimal_symbol_and_info (namestring, |
2666 | sh.value, | |
2667 | mst_file_bss, | |
2668 | NULL, | |
b8fbeb18 | 2669 | SECT_OFF_BSS (objfile), |
c906108c SS |
2670 | NULL, |
2671 | objfile); | |
2672 | break; | |
2673 | } | |
2674 | } | |
2675 | continue; | |
2676 | } | |
2677 | /* Handle stabs continuation */ | |
2678 | { | |
2679 | char *stabstring = debug_info->ss + fh->issBase + sh.iss; | |
2680 | int len = strlen (stabstring); | |
c5aa993b | 2681 | while (stabstring[len - 1] == '\\') |
c906108c SS |
2682 | { |
2683 | SYMR sh2; | |
2684 | char *stabstring1 = stabstring; | |
2685 | char *stabstring2; | |
2686 | int len2; | |
2687 | ||
2688 | /* Ignore continuation char from 1st string */ | |
2689 | len--; | |
2690 | ||
2691 | /* Read next stabstring */ | |
2692 | cur_sdx++; | |
2693 | (*swap_sym_in) (cur_bfd, | |
2694 | (((char *) debug_info->external_sym) | |
c5aa993b | 2695 | + (fh->isymBase + cur_sdx) |
c906108c SS |
2696 | * external_sym_size), |
2697 | &sh2); | |
2698 | stabstring2 = debug_info->ss + fh->issBase + sh2.iss; | |
2699 | len2 = strlen (stabstring2); | |
2700 | ||
2701 | /* Concatinate stabstring2 with stabstring1 */ | |
2702 | if (stabstring | |
c5aa993b | 2703 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
c906108c SS |
2704 | stabstring = xrealloc (stabstring, len + len2 + 1); |
2705 | else | |
86f902e0 FF |
2706 | { |
2707 | stabstring = xmalloc (len + len2 + 1); | |
2708 | strcpy (stabstring, stabstring1); | |
2709 | } | |
c906108c SS |
2710 | strcpy (stabstring + len, stabstring2); |
2711 | len += len2; | |
2712 | } | |
2713 | ||
d3119d1e EZ |
2714 | switch (type_code) |
2715 | { | |
d3119d1e EZ |
2716 | char *p; |
2717 | /* | |
2718 | * Standard, external, non-debugger, symbols | |
2719 | */ | |
2720 | ||
2721 | case N_TEXT | N_EXT: | |
2722 | case N_NBTEXT | N_EXT: | |
2723 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2724 | goto record_it; | |
2725 | ||
2726 | case N_DATA | N_EXT: | |
2727 | case N_NBDATA | N_EXT: | |
2728 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2729 | goto record_it; | |
2730 | ||
2731 | case N_BSS: | |
2732 | case N_BSS | N_EXT: | |
2733 | case N_NBBSS | N_EXT: | |
2734 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
2735 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); | |
2736 | goto record_it; | |
2737 | ||
2738 | case N_ABS | N_EXT: | |
2739 | record_it: | |
2740 | continue; | |
2741 | ||
2742 | /* Standard, local, non-debugger, symbols */ | |
2743 | ||
2744 | case N_NBTEXT: | |
2745 | ||
2746 | /* We need to be able to deal with both N_FN or N_TEXT, | |
2747 | because we have no way of knowing whether the sys-supplied ld | |
2748 | or GNU ld was used to make the executable. Sequents throw | |
2749 | in another wrinkle -- they renumbered N_FN. */ | |
2750 | ||
2751 | case N_FN: | |
2752 | case N_FN_SEQ: | |
2753 | case N_TEXT: | |
2754 | continue; | |
2755 | ||
2756 | case N_DATA: | |
2757 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2758 | goto record_it; | |
2759 | ||
2760 | case N_UNDF | N_EXT: | |
2761 | continue; /* Just undefined, not COMMON */ | |
2762 | ||
2763 | case N_UNDF: | |
2764 | continue; | |
2765 | ||
2766 | /* Lots of symbol types we can just ignore. */ | |
2767 | ||
2768 | case N_ABS: | |
2769 | case N_NBDATA: | |
2770 | case N_NBBSS: | |
2771 | continue; | |
2772 | ||
2773 | /* Keep going . . . */ | |
2774 | ||
2775 | /* | |
2776 | * Special symbol types for GNU | |
2777 | */ | |
2778 | case N_INDR: | |
2779 | case N_INDR | N_EXT: | |
2780 | case N_SETA: | |
2781 | case N_SETA | N_EXT: | |
2782 | case N_SETT: | |
2783 | case N_SETT | N_EXT: | |
2784 | case N_SETD: | |
2785 | case N_SETD | N_EXT: | |
2786 | case N_SETB: | |
2787 | case N_SETB | N_EXT: | |
2788 | case N_SETV: | |
2789 | continue; | |
2790 | ||
2791 | /* | |
2792 | * Debugger symbols | |
2793 | */ | |
2794 | ||
2795 | case N_SO: | |
2796 | { | |
2797 | CORE_ADDR valu; | |
2798 | static int prev_so_symnum = -10; | |
2799 | static int first_so_symnum; | |
2800 | char *p; | |
2801 | int prev_textlow_not_set; | |
2802 | ||
2803 | valu = sh.value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2804 | ||
2805 | prev_textlow_not_set = textlow_not_set; | |
2806 | ||
2807 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
2808 | /* A zero value is probably an indication for the SunPRO 3.0 | |
2809 | compiler. end_psymtab explicitly tests for zero, so | |
2810 | don't relocate it. */ | |
2811 | ||
2812 | if (sh.value == 0) | |
2813 | { | |
2814 | textlow_not_set = 1; | |
2815 | valu = 0; | |
2816 | } | |
2817 | else | |
2818 | textlow_not_set = 0; | |
2819 | #else | |
2820 | textlow_not_set = 0; | |
2821 | #endif | |
2822 | past_first_source_file = 1; | |
2823 | ||
2824 | if (prev_so_symnum != symnum - 1) | |
2825 | { /* Here if prev stab wasn't N_SO */ | |
2826 | first_so_symnum = symnum; | |
2827 | ||
2828 | if (pst) | |
2829 | { | |
2830 | pst = (struct partial_symtab *) 0; | |
2831 | includes_used = 0; | |
2832 | dependencies_used = 0; | |
2833 | } | |
2834 | } | |
2835 | ||
2836 | prev_so_symnum = symnum; | |
c906108c | 2837 | |
d3119d1e EZ |
2838 | /* End the current partial symtab and start a new one */ |
2839 | ||
2840 | /* SET_NAMESTRING ();*/ | |
2841 | namestring = stabstring; | |
2842 | ||
2843 | /* Null name means end of .o file. Don't start a new one. */ | |
2844 | if (*namestring == '\000') | |
2845 | continue; | |
2846 | ||
2847 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
2848 | The first one is a directory name; the second the file name. | |
2849 | If pst exists, is empty, and has a filename ending in '/', | |
2850 | we assume the previous N_SO was a directory name. */ | |
2851 | ||
2852 | p = strrchr (namestring, '/'); | |
2853 | if (p && *(p + 1) == '\000') | |
2854 | continue; /* Simply ignore directory name SOs */ | |
2855 | ||
2856 | /* Some other compilers (C++ ones in particular) emit useless | |
2857 | SOs for non-existant .c files. We ignore all subsequent SOs that | |
2858 | immediately follow the first. */ | |
2859 | ||
2860 | if (!pst) | |
2861 | pst = save_pst; | |
2862 | continue; | |
2863 | } | |
2864 | ||
2865 | case N_BINCL: | |
2866 | continue; | |
2867 | ||
2868 | case N_SOL: | |
2869 | { | |
2870 | enum language tmp_language; | |
2871 | /* Mark down an include file in the current psymtab */ | |
2872 | ||
2873 | /* SET_NAMESTRING ();*/ | |
2874 | namestring = stabstring; | |
2875 | ||
2876 | tmp_language = deduce_language_from_filename (namestring); | |
2877 | ||
2878 | /* Only change the psymtab's language if we've learned | |
2879 | something useful (eg. tmp_language is not language_unknown). | |
2880 | In addition, to match what start_subfile does, never change | |
2881 | from C++ to C. */ | |
2882 | if (tmp_language != language_unknown | |
2883 | && (tmp_language != language_c | |
2884 | || psymtab_language != language_cplus)) | |
2885 | psymtab_language = tmp_language; | |
2886 | ||
2887 | /* In C++, one may expect the same filename to come round many | |
2888 | times, when code is coming alternately from the main file | |
2889 | and from inline functions in other files. So I check to see | |
2890 | if this is a file we've seen before -- either the main | |
2891 | source file, or a previously included file. | |
2892 | ||
2893 | This seems to be a lot of time to be spending on N_SOL, but | |
2894 | things like "break c-exp.y:435" need to work (I | |
2895 | suppose the psymtab_include_list could be hashed or put | |
2896 | in a binary tree, if profiling shows this is a major hog). */ | |
2897 | if (pst && STREQ (namestring, pst->filename)) | |
2898 | continue; | |
2899 | { | |
2900 | register int i; | |
2901 | for (i = 0; i < includes_used; i++) | |
2902 | if (STREQ (namestring, psymtab_include_list[i])) | |
2903 | { | |
2904 | i = -1; | |
2905 | break; | |
2906 | } | |
2907 | if (i == -1) | |
2908 | continue; | |
2909 | } | |
2910 | ||
2911 | psymtab_include_list[includes_used++] = namestring; | |
2912 | if (includes_used >= includes_allocated) | |
2913 | { | |
2914 | char **orig = psymtab_include_list; | |
2915 | ||
2916 | psymtab_include_list = (char **) | |
2917 | alloca ((includes_allocated *= 2) * | |
2918 | sizeof (char *)); | |
2919 | memcpy ((PTR) psymtab_include_list, (PTR) orig, | |
2920 | includes_used * sizeof (char *)); | |
2921 | } | |
2922 | continue; | |
2923 | } | |
2924 | case N_LSYM: /* Typedef or automatic variable. */ | |
2925 | case N_STSYM: /* Data seg var -- static */ | |
2926 | case N_LCSYM: /* BSS " */ | |
2927 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
2928 | case N_NBSTS: /* Gould nobase. */ | |
2929 | case N_NBLCS: /* symbols. */ | |
2930 | case N_FUN: | |
2931 | case N_GSYM: /* Global (extern) variable; can be | |
2932 | data or bss (sigh FIXME). */ | |
2933 | ||
2934 | /* Following may probably be ignored; I'll leave them here | |
2935 | for now (until I do Pascal and Modula 2 extensions). */ | |
2936 | ||
2937 | case N_PC: /* I may or may not need this; I | |
2938 | suspect not. */ | |
2939 | case N_M2C: /* I suspect that I can ignore this here. */ | |
2940 | case N_SCOPE: /* Same. */ | |
2941 | ||
2942 | /* SET_NAMESTRING ();*/ | |
2943 | namestring = stabstring; | |
2944 | p = (char *) strchr (namestring, ':'); | |
2945 | if (!p) | |
2946 | continue; /* Not a debugging symbol. */ | |
2947 | ||
2948 | ||
2949 | ||
2950 | /* Main processing section for debugging symbols which | |
2951 | the initial read through the symbol tables needs to worry | |
2952 | about. If we reach this point, the symbol which we are | |
2953 | considering is definitely one we are interested in. | |
2954 | p must also contain the (valid) index into the namestring | |
2955 | which indicates the debugging type symbol. */ | |
2956 | ||
2957 | switch (p[1]) | |
2958 | { | |
2959 | case 'S': | |
2960 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2961 | #ifdef STATIC_TRANSFORM_NAME | |
2962 | namestring = STATIC_TRANSFORM_NAME (namestring); | |
2963 | #endif | |
2964 | add_psymbol_to_list (namestring, p - namestring, | |
2965 | VAR_NAMESPACE, LOC_STATIC, | |
2966 | &objfile->static_psymbols, | |
2967 | 0, sh.value, | |
2968 | psymtab_language, objfile); | |
2969 | continue; | |
2970 | case 'G': | |
2971 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); | |
2972 | /* The addresses in these entries are reported to be | |
2973 | wrong. See the code that reads 'G's for symtabs. */ | |
2974 | add_psymbol_to_list (namestring, p - namestring, | |
2975 | VAR_NAMESPACE, LOC_STATIC, | |
2976 | &objfile->global_psymbols, | |
2977 | 0, sh.value, | |
2978 | psymtab_language, objfile); | |
2979 | continue; | |
2980 | ||
2981 | case 'T': | |
2982 | /* When a 'T' entry is defining an anonymous enum, it | |
2983 | may have a name which is the empty string, or a | |
2984 | single space. Since they're not really defining a | |
2985 | symbol, those shouldn't go in the partial symbol | |
2986 | table. We do pick up the elements of such enums at | |
2987 | 'check_enum:', below. */ | |
2988 | if (p >= namestring + 2 | |
2989 | || (p == namestring + 1 | |
2990 | && namestring[0] != ' ')) | |
2991 | { | |
2992 | add_psymbol_to_list (namestring, p - namestring, | |
2993 | STRUCT_NAMESPACE, LOC_TYPEDEF, | |
2994 | &objfile->static_psymbols, | |
2995 | sh.value, 0, | |
2996 | psymtab_language, objfile); | |
2997 | if (p[2] == 't') | |
2998 | { | |
2999 | /* Also a typedef with the same name. */ | |
3000 | add_psymbol_to_list (namestring, p - namestring, | |
3001 | VAR_NAMESPACE, LOC_TYPEDEF, | |
3002 | &objfile->static_psymbols, | |
3003 | sh.value, 0, | |
3004 | psymtab_language, objfile); | |
3005 | p += 1; | |
3006 | } | |
3007 | /* The semantics of C++ state that "struct foo { ... }" | |
3008 | also defines a typedef for "foo". Unfortuantely, cfront | |
3009 | never makes the typedef when translating from C++ to C. | |
3010 | We make the typedef here so that "ptype foo" works as | |
3011 | expected for cfront translated code. */ | |
3012 | else if (psymtab_language == language_cplus) | |
3013 | { | |
3014 | /* Also a typedef with the same name. */ | |
3015 | add_psymbol_to_list (namestring, p - namestring, | |
3016 | VAR_NAMESPACE, LOC_TYPEDEF, | |
3017 | &objfile->static_psymbols, | |
3018 | sh.value, 0, | |
3019 | psymtab_language, objfile); | |
3020 | } | |
3021 | } | |
3022 | goto check_enum; | |
3023 | case 't': | |
3024 | if (p != namestring) /* a name is there, not just :T... */ | |
3025 | { | |
3026 | add_psymbol_to_list (namestring, p - namestring, | |
3027 | VAR_NAMESPACE, LOC_TYPEDEF, | |
3028 | &objfile->static_psymbols, | |
3029 | sh.value, 0, | |
3030 | psymtab_language, objfile); | |
3031 | } | |
3032 | check_enum: | |
3033 | /* If this is an enumerated type, we need to | |
3034 | add all the enum constants to the partial symbol | |
3035 | table. This does not cover enums without names, e.g. | |
3036 | "enum {a, b} c;" in C, but fortunately those are | |
3037 | rare. There is no way for GDB to find those from the | |
3038 | enum type without spending too much time on it. Thus | |
3039 | to solve this problem, the compiler needs to put out the | |
3040 | enum in a nameless type. GCC2 does this. */ | |
3041 | ||
3042 | /* We are looking for something of the form | |
3043 | <name> ":" ("t" | "T") [<number> "="] "e" | |
3044 | {<constant> ":" <value> ","} ";". */ | |
3045 | ||
3046 | /* Skip over the colon and the 't' or 'T'. */ | |
3047 | p += 2; | |
3048 | /* This type may be given a number. Also, numbers can come | |
3049 | in pairs like (0,26). Skip over it. */ | |
3050 | while ((*p >= '0' && *p <= '9') | |
3051 | || *p == '(' || *p == ',' || *p == ')' | |
3052 | || *p == '=') | |
3053 | p++; | |
3054 | ||
3055 | if (*p++ == 'e') | |
3056 | { | |
3057 | /* The aix4 compiler emits extra crud before the members. */ | |
3058 | if (*p == '-') | |
3059 | { | |
3060 | /* Skip over the type (?). */ | |
3061 | while (*p != ':') | |
3062 | p++; | |
3063 | ||
3064 | /* Skip over the colon. */ | |
3065 | p++; | |
3066 | } | |
3067 | ||
3068 | /* We have found an enumerated type. */ | |
3069 | /* According to comments in read_enum_type | |
3070 | a comma could end it instead of a semicolon. | |
3071 | I don't know where that happens. | |
3072 | Accept either. */ | |
3073 | while (*p && *p != ';' && *p != ',') | |
3074 | { | |
3075 | char *q; | |
3076 | ||
3077 | /* Check for and handle cretinous dbx symbol name | |
3078 | continuation! */ | |
3079 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
3080 | p = next_symbol_text (objfile); | |
3081 | ||
3082 | /* Point to the character after the name | |
3083 | of the enum constant. */ | |
3084 | for (q = p; *q && *q != ':'; q++) | |
3085 | ; | |
3086 | /* Note that the value doesn't matter for | |
3087 | enum constants in psymtabs, just in symtabs. */ | |
3088 | add_psymbol_to_list (p, q - p, | |
3089 | VAR_NAMESPACE, LOC_CONST, | |
3090 | &objfile->static_psymbols, 0, | |
3091 | 0, psymtab_language, objfile); | |
3092 | /* Point past the name. */ | |
3093 | p = q; | |
3094 | /* Skip over the value. */ | |
3095 | while (*p && *p != ',') | |
3096 | p++; | |
3097 | /* Advance past the comma. */ | |
3098 | if (*p) | |
3099 | p++; | |
3100 | } | |
3101 | } | |
3102 | continue; | |
3103 | case 'c': | |
3104 | /* Constant, e.g. from "const" in Pascal. */ | |
3105 | add_psymbol_to_list (namestring, p - namestring, | |
3106 | VAR_NAMESPACE, LOC_CONST, | |
3107 | &objfile->static_psymbols, sh.value, | |
3108 | 0, psymtab_language, objfile); | |
3109 | continue; | |
3110 | ||
3111 | case 'f': | |
3112 | if (! pst) | |
3113 | { | |
3114 | int name_len = p - namestring; | |
3115 | char *name = xmalloc (name_len + 1); | |
3116 | memcpy (name, namestring, name_len); | |
3117 | name[name_len] = '\0'; | |
23136709 | 3118 | function_outside_compilation_unit_complaint (name); |
d3119d1e EZ |
3119 | xfree (name); |
3120 | } | |
3121 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3122 | add_psymbol_to_list (namestring, p - namestring, | |
3123 | VAR_NAMESPACE, LOC_BLOCK, | |
3124 | &objfile->static_psymbols, | |
3125 | 0, sh.value, | |
3126 | psymtab_language, objfile); | |
3127 | continue; | |
3128 | ||
3129 | /* Global functions were ignored here, but now they | |
3130 | are put into the global psymtab like one would expect. | |
3131 | They're also in the minimal symbol table. */ | |
3132 | case 'F': | |
3133 | if (! pst) | |
3134 | { | |
3135 | int name_len = p - namestring; | |
3136 | char *name = xmalloc (name_len + 1); | |
3137 | memcpy (name, namestring, name_len); | |
3138 | name[name_len] = '\0'; | |
23136709 | 3139 | function_outside_compilation_unit_complaint (name); |
d3119d1e EZ |
3140 | xfree (name); |
3141 | } | |
3142 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3143 | add_psymbol_to_list (namestring, p - namestring, | |
3144 | VAR_NAMESPACE, LOC_BLOCK, | |
3145 | &objfile->global_psymbols, | |
3146 | 0, sh.value, | |
3147 | psymtab_language, objfile); | |
3148 | continue; | |
3149 | ||
3150 | /* Two things show up here (hopefully); static symbols of | |
3151 | local scope (static used inside braces) or extensions | |
3152 | of structure symbols. We can ignore both. */ | |
3153 | case 'V': | |
3154 | case '(': | |
3155 | case '0': | |
3156 | case '1': | |
3157 | case '2': | |
3158 | case '3': | |
3159 | case '4': | |
3160 | case '5': | |
3161 | case '6': | |
3162 | case '7': | |
3163 | case '8': | |
3164 | case '9': | |
3165 | case '-': | |
3166 | case '#': /* for symbol identification (used in live ranges) */ | |
3167 | /* added to support cfront stabs strings */ | |
3168 | case 'Z': /* for definition continuations */ | |
3169 | case 'P': /* for prototypes */ | |
3170 | continue; | |
3171 | ||
3172 | case ':': | |
3173 | /* It is a C++ nested symbol. We don't need to record it | |
3174 | (I don't think); if we try to look up foo::bar::baz, | |
3175 | then symbols for the symtab containing foo should get | |
3176 | read in, I think. */ | |
3177 | /* Someone says sun cc puts out symbols like | |
3178 | /foo/baz/maclib::/usr/local/bin/maclib, | |
3179 | which would get here with a symbol type of ':'. */ | |
3180 | continue; | |
3181 | ||
3182 | default: | |
3183 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
3184 | of a continued stab can show up here. The question is | |
3185 | whether they ever can mimic a normal stab--it would be | |
3186 | nice if not, since we certainly don't want to spend the | |
3187 | time searching to the end of every string looking for | |
3188 | a backslash. */ | |
3189 | ||
23136709 KB |
3190 | complaint (&symfile_complaints, |
3191 | "unknown symbol descriptor `%c'", p[1]); | |
d3119d1e EZ |
3192 | |
3193 | /* Ignore it; perhaps it is an extension that we don't | |
3194 | know about. */ | |
3195 | continue; | |
3196 | } | |
3197 | ||
3198 | case N_EXCL: | |
3199 | continue; | |
3200 | ||
3201 | case N_ENDM: | |
3202 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
5afc051b JB |
3203 | /* Solaris 2 end of module, finish current partial |
3204 | symbol table. END_PSYMTAB will set | |
3205 | pst->texthigh to the proper value, which is | |
3206 | necessary if a module compiled without | |
3207 | debugging info follows this module. */ | |
d3119d1e EZ |
3208 | if (pst) |
3209 | { | |
3210 | pst = (struct partial_symtab *) 0; | |
3211 | includes_used = 0; | |
3212 | dependencies_used = 0; | |
3213 | } | |
3214 | #endif | |
3215 | continue; | |
3216 | ||
3217 | case N_RBRAC: | |
5afc051b JB |
3218 | if (sh.value > save_pst->texthigh) |
3219 | save_pst->texthigh = sh.value; | |
d3119d1e EZ |
3220 | continue; |
3221 | case N_EINCL: | |
3222 | case N_DSLINE: | |
3223 | case N_BSLINE: | |
3224 | case N_SSYM: /* Claim: Structure or union element. | |
3225 | Hopefully, I can ignore this. */ | |
3226 | case N_ENTRY: /* Alternate entry point; can ignore. */ | |
3227 | case N_MAIN: /* Can definitely ignore this. */ | |
3228 | case N_CATCH: /* These are GNU C++ extensions */ | |
3229 | case N_EHDECL: /* that can safely be ignored here. */ | |
3230 | case N_LENG: | |
3231 | case N_BCOMM: | |
3232 | case N_ECOMM: | |
3233 | case N_ECOML: | |
3234 | case N_FNAME: | |
3235 | case N_SLINE: | |
3236 | case N_RSYM: | |
3237 | case N_PSYM: | |
3238 | case N_LBRAC: | |
3239 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
3240 | case N_DEFD: /* GNU Modula-2 */ | |
3241 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
3242 | ||
3243 | case N_OBJ: /* useless types from Solaris */ | |
3244 | case N_OPT: | |
3245 | /* These symbols aren't interesting; don't worry about them */ | |
3246 | ||
3247 | continue; | |
3248 | ||
3249 | default: | |
3250 | /* If we haven't found it yet, ignore it. It's probably some | |
3251 | new type we don't know about yet. */ | |
23136709 KB |
3252 | complaint (&symfile_complaints, "unknown symbol type %s", |
3253 | local_hex_string (type_code)); /*CUR_SYMBOL_TYPE*/ | |
d3119d1e EZ |
3254 | continue; |
3255 | } | |
c5aa993b | 3256 | if (stabstring |
c906108c | 3257 | && stabstring != debug_info->ss + fh->issBase + sh.iss) |
b8c9b27d | 3258 | xfree (stabstring); |
c906108c | 3259 | } |
c5aa993b | 3260 | /* end - Handle continuation */ |
c906108c SS |
3261 | } |
3262 | } | |
3263 | else | |
3264 | { | |
3265 | for (cur_sdx = 0; cur_sdx < fh->csym;) | |
3266 | { | |
3267 | char *name; | |
3268 | enum address_class class; | |
3269 | ||
3270 | (*swap_sym_in) (cur_bfd, | |
3271 | ((char *) debug_info->external_sym | |
3272 | + ((fh->isymBase + cur_sdx) | |
3273 | * external_sym_size)), | |
3274 | &sh); | |
3275 | ||
3276 | if (ECOFF_IS_STAB (&sh)) | |
3277 | { | |
3278 | cur_sdx++; | |
3279 | continue; | |
3280 | } | |
3281 | ||
3282 | /* Non absolute static symbols go into the minimal table. */ | |
c5aa993b | 3283 | if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil |
c906108c SS |
3284 | || (sh.index == indexNil |
3285 | && (sh.st != stStatic || sh.sc == scAbs))) | |
3286 | { | |
3287 | /* FIXME, premature? */ | |
3288 | cur_sdx++; | |
3289 | continue; | |
3290 | } | |
3291 | ||
3292 | name = debug_info->ss + fh->issBase + sh.iss; | |
3293 | ||
3294 | switch (sh.sc) | |
3295 | { | |
3296 | case scText: | |
3297 | case scRConst: | |
3298 | /* The value of a stEnd symbol is the displacement from the | |
3299 | corresponding start symbol value, do not relocate it. */ | |
3300 | if (sh.st != stEnd) | |
b8fbeb18 | 3301 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3302 | break; |
3303 | case scData: | |
3304 | case scSData: | |
3305 | case scRData: | |
3306 | case scPData: | |
3307 | case scXData: | |
b8fbeb18 | 3308 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3309 | break; |
3310 | case scBss: | |
3311 | case scSBss: | |
b8fbeb18 | 3312 | sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3313 | break; |
3314 | } | |
3315 | ||
3316 | switch (sh.st) | |
3317 | { | |
3318 | CORE_ADDR high; | |
3319 | CORE_ADDR procaddr; | |
3320 | int new_sdx; | |
3321 | ||
3322 | case stStaticProc: | |
3323 | prim_record_minimal_symbol_and_info (name, sh.value, | |
3324 | mst_file_text, NULL, | |
b8fbeb18 | 3325 | SECT_OFF_TEXT (objfile), NULL, |
c906108c SS |
3326 | objfile); |
3327 | ||
3328 | /* FALLTHROUGH */ | |
3329 | ||
3330 | case stProc: | |
3331 | /* Usually there is a local and a global stProc symbol | |
3332 | for a function. This means that the function name | |
3333 | has already been entered into the mimimal symbol table | |
3334 | while processing the global symbols in pass 2 above. | |
3335 | One notable exception is the PROGRAM name from | |
3336 | f77 compiled executables, it is only put out as | |
3337 | local stProc symbol, and a global MAIN__ stProc symbol | |
3338 | points to it. It doesn't matter though, as gdb is | |
3339 | still able to find the PROGRAM name via the partial | |
3340 | symbol table, and the MAIN__ symbol via the minimal | |
3341 | symbol table. */ | |
3342 | if (sh.st == stProc) | |
3343 | add_psymbol_to_list (name, strlen (name), | |
3344 | VAR_NAMESPACE, LOC_BLOCK, | |
3345 | &objfile->global_psymbols, | |
c5aa993b | 3346 | 0, sh.value, psymtab_language, objfile); |
c906108c SS |
3347 | else |
3348 | add_psymbol_to_list (name, strlen (name), | |
3349 | VAR_NAMESPACE, LOC_BLOCK, | |
3350 | &objfile->static_psymbols, | |
c5aa993b | 3351 | 0, sh.value, psymtab_language, objfile); |
c906108c | 3352 | |
62707793 JB |
3353 | /* Skip over procedure to next one. */ |
3354 | if (sh.index >= hdr->iauxMax) | |
3355 | { | |
3356 | /* Should not happen, but does when cross-compiling | |
3357 | with the MIPS compiler. FIXME -- pull later. */ | |
3358 | index_complaint (name); | |
3359 | new_sdx = cur_sdx + 1; /* Don't skip at all */ | |
3360 | } | |
3361 | else | |
3362 | new_sdx = AUX_GET_ISYM (fh->fBigendian, | |
3363 | (debug_info->external_aux | |
3364 | + fh->iauxBase | |
3365 | + sh.index)); | |
c906108c SS |
3366 | procaddr = sh.value; |
3367 | ||
62707793 JB |
3368 | if (new_sdx <= cur_sdx) |
3369 | { | |
3370 | /* This should not happen either... FIXME. */ | |
3371 | complaint (&symfile_complaints, | |
3372 | "bad proc end in aux found from symbol %s", | |
3373 | name); | |
3374 | new_sdx = cur_sdx + 1; /* Don't skip backward */ | |
3375 | } | |
3376 | ||
c906108c SS |
3377 | cur_sdx = new_sdx; |
3378 | (*swap_sym_in) (cur_bfd, | |
3379 | ((char *) debug_info->external_sym | |
3380 | + ((fh->isymBase + cur_sdx - 1) | |
3381 | * external_sym_size)), | |
3382 | &sh); | |
3383 | if (sh.st != stEnd) | |
3384 | continue; | |
3385 | ||
3386 | /* Kludge for Irix 5.2 zero fh->adr. */ | |
3387 | if (!relocatable | |
5afc051b JB |
3388 | && (pst->textlow == 0 || procaddr < pst->textlow)) |
3389 | pst->textlow = procaddr; | |
c906108c SS |
3390 | |
3391 | high = procaddr + sh.value; | |
5afc051b JB |
3392 | if (high > pst->texthigh) |
3393 | pst->texthigh = high; | |
c906108c SS |
3394 | continue; |
3395 | ||
3396 | case stStatic: /* Variable */ | |
c5aa993b | 3397 | if (SC_IS_DATA (sh.sc)) |
c906108c SS |
3398 | prim_record_minimal_symbol_and_info (name, sh.value, |
3399 | mst_file_data, NULL, | |
b8fbeb18 | 3400 | SECT_OFF_DATA (objfile), |
c906108c SS |
3401 | NULL, |
3402 | objfile); | |
3403 | else | |
3404 | prim_record_minimal_symbol_and_info (name, sh.value, | |
3405 | mst_file_bss, NULL, | |
b8fbeb18 | 3406 | SECT_OFF_BSS (objfile), |
c906108c SS |
3407 | NULL, |
3408 | objfile); | |
3409 | class = LOC_STATIC; | |
3410 | break; | |
3411 | ||
c5aa993b | 3412 | case stIndirect: /* Irix5 forward declaration */ |
c906108c SS |
3413 | /* Skip forward declarations from Irix5 cc */ |
3414 | goto skip; | |
3415 | ||
c5aa993b | 3416 | case stTypedef: /* Typedef */ |
c906108c SS |
3417 | /* Skip typedefs for forward declarations and opaque |
3418 | structs from alpha and mips cc. */ | |
3419 | if (sh.iss == 0 || has_opaque_xref (fh, &sh)) | |
3420 | goto skip; | |
3421 | class = LOC_TYPEDEF; | |
3422 | break; | |
3423 | ||
3424 | case stConstant: /* Constant decl */ | |
3425 | class = LOC_CONST; | |
3426 | break; | |
3427 | ||
3428 | case stUnion: | |
3429 | case stStruct: | |
3430 | case stEnum: | |
c5aa993b | 3431 | case stBlock: /* { }, str, un, enum */ |
c906108c SS |
3432 | /* Do not create a partial symbol for cc unnamed aggregates |
3433 | and gcc empty aggregates. */ | |
3434 | if ((sh.sc == scInfo | |
c5aa993b | 3435 | || SC_IS_COMMON (sh.sc)) |
c906108c SS |
3436 | && sh.iss != 0 |
3437 | && sh.index != cur_sdx + 2) | |
3438 | { | |
3439 | add_psymbol_to_list (name, strlen (name), | |
3440 | STRUCT_NAMESPACE, LOC_TYPEDEF, | |
3441 | &objfile->static_psymbols, | |
3442 | 0, (CORE_ADDR) 0, | |
3443 | psymtab_language, objfile); | |
3444 | } | |
3445 | handle_psymbol_enumerators (objfile, fh, sh.st, sh.value); | |
3446 | ||
3447 | /* Skip over the block */ | |
3448 | new_sdx = sh.index; | |
3449 | if (new_sdx <= cur_sdx) | |
3450 | { | |
3451 | /* This happens with the Ultrix kernel. */ | |
23136709 KB |
3452 | complaint (&symfile_complaints, |
3453 | "bad aux index at block symbol %s", name); | |
c906108c SS |
3454 | new_sdx = cur_sdx + 1; /* Don't skip backward */ |
3455 | } | |
3456 | cur_sdx = new_sdx; | |
3457 | continue; | |
3458 | ||
3459 | case stFile: /* File headers */ | |
3460 | case stLabel: /* Labels */ | |
3461 | case stEnd: /* Ends of files */ | |
3462 | goto skip; | |
3463 | ||
3464 | case stLocal: /* Local variables */ | |
3465 | /* Normally these are skipped because we skip over | |
3466 | all blocks we see. However, these can occur | |
3467 | as visible symbols in a .h file that contains code. */ | |
3468 | goto skip; | |
3469 | ||
3470 | default: | |
3471 | /* Both complaints are valid: one gives symbol name, | |
3472 | the other the offending symbol type. */ | |
23136709 KB |
3473 | complaint (&symfile_complaints, "unknown local symbol %s", |
3474 | name); | |
3475 | complaint (&symfile_complaints, "with type %d", sh.st); | |
c906108c SS |
3476 | cur_sdx++; |
3477 | continue; | |
3478 | } | |
3479 | /* Use this gdb symbol */ | |
3480 | add_psymbol_to_list (name, strlen (name), | |
3481 | VAR_NAMESPACE, class, | |
3482 | &objfile->static_psymbols, | |
3483 | 0, sh.value, psymtab_language, objfile); | |
3484 | skip: | |
3485 | cur_sdx++; /* Go to next file symbol */ | |
3486 | } | |
3487 | ||
3488 | /* Now do enter the external symbols. */ | |
3489 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; | |
3490 | cur_sdx = fdr_to_pst[f_idx].n_globals; | |
3491 | PST_PRIVATE (save_pst)->extern_count = cur_sdx; | |
3492 | PST_PRIVATE (save_pst)->extern_tab = ext_ptr; | |
3493 | for (; --cur_sdx >= 0; ext_ptr++) | |
3494 | { | |
3495 | enum address_class class; | |
3496 | SYMR *psh; | |
3497 | char *name; | |
3498 | CORE_ADDR svalue; | |
3499 | ||
3500 | if (ext_ptr->ifd != f_idx) | |
e1e9e218 | 3501 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
3502 | psh = &ext_ptr->asym; |
3503 | ||
3504 | /* Do not add undefined symbols to the partial symbol table. */ | |
c5aa993b | 3505 | if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil) |
c906108c SS |
3506 | continue; |
3507 | ||
3508 | svalue = psh->value; | |
3509 | switch (psh->sc) | |
3510 | { | |
3511 | case scText: | |
3512 | case scRConst: | |
b8fbeb18 | 3513 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3514 | break; |
3515 | case scData: | |
3516 | case scSData: | |
3517 | case scRData: | |
3518 | case scPData: | |
3519 | case scXData: | |
b8fbeb18 | 3520 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3521 | break; |
3522 | case scBss: | |
3523 | case scSBss: | |
b8fbeb18 | 3524 | svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3525 | break; |
3526 | } | |
3527 | ||
3528 | switch (psh->st) | |
3529 | { | |
3530 | case stNil: | |
3531 | /* These are generated for static symbols in .o files, | |
3532 | ignore them. */ | |
3533 | continue; | |
3534 | case stProc: | |
3535 | case stStaticProc: | |
3536 | /* External procedure symbols have been entered | |
3537 | into the minimal symbol table in pass 2 above. | |
3538 | Ignore them, as parse_external will ignore them too. */ | |
3539 | continue; | |
3540 | case stLabel: | |
3541 | class = LOC_LABEL; | |
3542 | break; | |
3543 | default: | |
23136709 | 3544 | unknown_ext_complaint (debug_info->ssext + psh->iss); |
c906108c SS |
3545 | /* Fall through, pretend it's global. */ |
3546 | case stGlobal: | |
3547 | /* Global common symbols are resolved by the runtime loader, | |
3548 | ignore them. */ | |
c5aa993b | 3549 | if (SC_IS_COMMON (psh->sc)) |
c906108c SS |
3550 | continue; |
3551 | ||
3552 | class = LOC_STATIC; | |
3553 | break; | |
3554 | } | |
3555 | name = debug_info->ssext + psh->iss; | |
3556 | add_psymbol_to_list (name, strlen (name), | |
3557 | VAR_NAMESPACE, class, | |
3558 | &objfile->global_psymbols, | |
3559 | 0, svalue, | |
3560 | psymtab_language, objfile); | |
3561 | } | |
3562 | } | |
3563 | ||
3564 | /* Link pst to FDR. end_psymtab returns NULL if the psymtab was | |
c5aa993b | 3565 | empty and put on the free list. */ |
c906108c | 3566 | fdr_to_pst[f_idx].pst = end_psymtab (save_pst, |
c5aa993b | 3567 | psymtab_include_list, includes_used, |
5afc051b | 3568 | -1, save_pst->texthigh, |
c5aa993b | 3569 | dependency_list, dependencies_used, textlow_not_set); |
c906108c SS |
3570 | includes_used = 0; |
3571 | dependencies_used = 0; | |
3572 | ||
5afc051b JB |
3573 | if (objfile->ei.entry_point >= save_pst->textlow && |
3574 | objfile->ei.entry_point < save_pst->texthigh) | |
c906108c | 3575 | { |
5afc051b JB |
3576 | objfile->ei.entry_file_lowpc = save_pst->textlow; |
3577 | objfile->ei.entry_file_highpc = save_pst->texthigh; | |
c906108c SS |
3578 | } |
3579 | ||
3580 | /* The objfile has its functions reordered if this partial symbol | |
c5aa993b JM |
3581 | table overlaps any other partial symbol table. |
3582 | We cannot assume a reordered objfile if a partial symbol table | |
3583 | is contained within another partial symbol table, as partial symbol | |
3584 | tables for include files with executable code are contained | |
3585 | within the partial symbol table for the including source file, | |
3586 | and we do not want to flag the objfile reordered for these cases. | |
3587 | ||
3588 | This strategy works well for Irix-5.2 shared libraries, but we | |
3589 | might have to use a more elaborate (and slower) algorithm for | |
3590 | other cases. */ | |
c906108c SS |
3591 | save_pst = fdr_to_pst[f_idx].pst; |
3592 | if (save_pst != NULL | |
5afc051b | 3593 | && save_pst->textlow != 0 |
c906108c SS |
3594 | && !(objfile->flags & OBJF_REORDERED)) |
3595 | { | |
3596 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
c5aa993b JM |
3597 | { |
3598 | if (save_pst != pst | |
5afc051b JB |
3599 | && save_pst->textlow >= pst->textlow |
3600 | && save_pst->textlow < pst->texthigh | |
3601 | && save_pst->texthigh > pst->texthigh) | |
c5aa993b JM |
3602 | { |
3603 | objfile->flags |= OBJF_REORDERED; | |
3604 | break; | |
3605 | } | |
3606 | } | |
c906108c SS |
3607 | } |
3608 | } | |
3609 | ||
3610 | /* Now scan the FDRs for dependencies */ | |
3611 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) | |
3612 | { | |
3613 | fh = f_idx + debug_info->fdr; | |
3614 | pst = fdr_to_pst[f_idx].pst; | |
3615 | ||
c5aa993b | 3616 | if (pst == (struct partial_symtab *) NULL) |
c906108c SS |
3617 | continue; |
3618 | ||
3619 | /* This should catch stabs-in-ecoff. */ | |
3620 | if (fh->crfd <= 1) | |
3621 | continue; | |
3622 | ||
3623 | /* Skip the first file indirect entry as it is a self dependency | |
c5aa993b | 3624 | for source files or a reverse .h -> .c dependency for header files. */ |
c906108c SS |
3625 | pst->number_of_dependencies = 0; |
3626 | pst->dependencies = | |
3627 | ((struct partial_symtab **) | |
3628 | obstack_alloc (&objfile->psymbol_obstack, | |
3629 | ((fh->crfd - 1) | |
3630 | * sizeof (struct partial_symtab *)))); | |
3631 | for (s_idx = 1; s_idx < fh->crfd; s_idx++) | |
3632 | { | |
3633 | RFDT rh; | |
3634 | ||
3635 | (*swap_rfd_in) (cur_bfd, | |
3636 | ((char *) debug_info->external_rfd | |
3637 | + (fh->rfdBase + s_idx) * external_rfd_size), | |
3638 | &rh); | |
3639 | if (rh < 0 || rh >= hdr->ifdMax) | |
3640 | { | |
23136709 | 3641 | complaint (&symfile_complaints, "bad file number %ld", rh); |
c906108c SS |
3642 | continue; |
3643 | } | |
3644 | ||
3645 | /* Skip self dependencies of header files. */ | |
3646 | if (rh == f_idx) | |
3647 | continue; | |
3648 | ||
3649 | /* Do not add to dependeny list if psymtab was empty. */ | |
c5aa993b | 3650 | if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL) |
c906108c SS |
3651 | continue; |
3652 | pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst; | |
3653 | } | |
3654 | } | |
3655 | ||
3656 | /* Remove the dummy psymtab created for -O3 images above, if it is | |
3657 | still empty, to enable the detection of stripped executables. */ | |
3658 | if (objfile->psymtabs->next == NULL | |
3659 | && objfile->psymtabs->number_of_dependencies == 0 | |
3660 | && objfile->psymtabs->n_global_syms == 0 | |
3661 | && objfile->psymtabs->n_static_syms == 0) | |
3662 | objfile->psymtabs = NULL; | |
3663 | do_cleanups (old_chain); | |
3664 | } | |
3665 | ||
3666 | /* If the current psymbol has an enumerated type, we need to add | |
3667 | all the the enum constants to the partial symbol table. */ | |
3668 | ||
3669 | static void | |
fba45db2 KB |
3670 | handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype, |
3671 | CORE_ADDR svalue) | |
c906108c SS |
3672 | { |
3673 | const bfd_size_type external_sym_size = debug_swap->external_sym_size; | |
12b9c64f | 3674 | void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in; |
c906108c | 3675 | char *ext_sym = ((char *) debug_info->external_sym |
c5aa993b | 3676 | + ((fh->isymBase + cur_sdx + 1) * external_sym_size)); |
c906108c SS |
3677 | SYMR sh; |
3678 | TIR tir; | |
3679 | ||
3680 | switch (stype) | |
3681 | { | |
3682 | case stEnum: | |
3683 | break; | |
3684 | ||
3685 | case stBlock: | |
3686 | /* It is an enumerated type if the next symbol entry is a stMember | |
c5aa993b JM |
3687 | and its auxiliary index is indexNil or its auxiliary entry |
3688 | is a plain btNil or btVoid. | |
3689 | Alpha cc -migrate enums are recognized by a zero index and | |
3690 | a zero symbol value. | |
3691 | DU 4.0 cc enums are recognized by a member type of btEnum without | |
3692 | qualifiers and a zero symbol value. */ | |
c906108c SS |
3693 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); |
3694 | if (sh.st != stMember) | |
3695 | return; | |
3696 | ||
3697 | if (sh.index == indexNil | |
3698 | || (sh.index == 0 && svalue == 0)) | |
3699 | break; | |
3700 | (*debug_swap->swap_tir_in) (fh->fBigendian, | |
3701 | &(debug_info->external_aux | |
3702 | + fh->iauxBase + sh.index)->a_ti, | |
3703 | &tir); | |
3704 | if ((tir.bt != btNil | |
3705 | && tir.bt != btVoid | |
3706 | && (tir.bt != btEnum || svalue != 0)) | |
3707 | || tir.tq0 != tqNil) | |
3708 | return; | |
3709 | break; | |
3710 | ||
3711 | default: | |
3712 | return; | |
3713 | } | |
3714 | ||
3715 | for (;;) | |
3716 | { | |
3717 | char *name; | |
3718 | ||
3719 | (*swap_sym_in) (cur_bfd, ext_sym, &sh); | |
3720 | if (sh.st != stMember) | |
3721 | break; | |
3722 | name = debug_info->ss + cur_fdr->issBase + sh.iss; | |
3723 | ||
3724 | /* Note that the value doesn't matter for enum constants | |
c5aa993b | 3725 | in psymtabs, just in symtabs. */ |
c906108c SS |
3726 | add_psymbol_to_list (name, strlen (name), |
3727 | VAR_NAMESPACE, LOC_CONST, | |
3728 | &objfile->static_psymbols, 0, | |
3729 | (CORE_ADDR) 0, psymtab_language, objfile); | |
3730 | ext_sym += external_sym_size; | |
3731 | } | |
3732 | } | |
3733 | ||
0e7e8d51 KB |
3734 | /* Get the next symbol. OBJFILE is unused. */ |
3735 | ||
c906108c | 3736 | static char * |
0e7e8d51 | 3737 | mdebug_next_symbol_text (struct objfile *objfile) |
c906108c SS |
3738 | { |
3739 | SYMR sh; | |
3740 | ||
3741 | cur_sdx++; | |
3742 | (*debug_swap->swap_sym_in) (cur_bfd, | |
3743 | ((char *) debug_info->external_sym | |
3744 | + ((cur_fdr->isymBase + cur_sdx) | |
3745 | * debug_swap->external_sym_size)), | |
3746 | &sh); | |
3747 | return debug_info->ss + cur_fdr->issBase + sh.iss; | |
3748 | } | |
3749 | ||
3750 | /* Ancillary function to psymtab_to_symtab(). Does all the work | |
3751 | for turning the partial symtab PST into a symtab, recurring | |
3752 | first on all dependent psymtabs. The argument FILENAME is | |
3753 | only passed so we can see in debug stack traces what file | |
3754 | is being read. | |
3755 | ||
3756 | This function has a split personality, based on whether the | |
3757 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. | |
3758 | The flow of control and even the memory allocation differs. FIXME. */ | |
3759 | ||
3760 | static void | |
fba45db2 | 3761 | psymtab_to_symtab_1 (struct partial_symtab *pst, char *filename) |
c906108c SS |
3762 | { |
3763 | bfd_size_type external_sym_size; | |
3764 | bfd_size_type external_pdr_size; | |
12b9c64f AO |
3765 | void (*swap_sym_in) (bfd *, void *, SYMR *); |
3766 | void (*swap_pdr_in) (bfd *, void *, PDR *); | |
c906108c | 3767 | int i; |
16db6055 | 3768 | struct symtab *st = NULL; |
c906108c SS |
3769 | FDR *fh; |
3770 | struct linetable *lines; | |
3771 | CORE_ADDR lowest_pdr_addr = 0; | |
16db6055 | 3772 | int last_symtab_ended = 0; |
c906108c SS |
3773 | |
3774 | if (pst->readin) | |
3775 | return; | |
3776 | pst->readin = 1; | |
3777 | ||
3778 | /* Read in all partial symbtabs on which this one is dependent. | |
3779 | NOTE that we do have circular dependencies, sigh. We solved | |
3780 | that by setting pst->readin before this point. */ | |
3781 | ||
3782 | for (i = 0; i < pst->number_of_dependencies; i++) | |
3783 | if (!pst->dependencies[i]->readin) | |
3784 | { | |
3785 | /* Inform about additional files to be read in. */ | |
3786 | if (info_verbose) | |
3787 | { | |
3788 | fputs_filtered (" ", gdb_stdout); | |
3789 | wrap_here (""); | |
3790 | fputs_filtered ("and ", gdb_stdout); | |
3791 | wrap_here (""); | |
3792 | printf_filtered ("%s...", | |
3793 | pst->dependencies[i]->filename); | |
3794 | wrap_here (""); /* Flush output */ | |
3795 | gdb_flush (gdb_stdout); | |
3796 | } | |
3797 | /* We only pass the filename for debug purposes */ | |
3798 | psymtab_to_symtab_1 (pst->dependencies[i], | |
3799 | pst->dependencies[i]->filename); | |
3800 | } | |
3801 | ||
3802 | /* Do nothing if this is a dummy psymtab. */ | |
3803 | ||
3804 | if (pst->n_global_syms == 0 && pst->n_static_syms == 0 | |
5afc051b | 3805 | && pst->textlow == 0 && pst->texthigh == 0) |
c906108c SS |
3806 | return; |
3807 | ||
3808 | /* Now read the symbols for this symtab */ | |
3809 | ||
3810 | cur_bfd = CUR_BFD (pst); | |
3811 | debug_swap = DEBUG_SWAP (pst); | |
3812 | debug_info = DEBUG_INFO (pst); | |
3813 | pending_list = PENDING_LIST (pst); | |
3814 | external_sym_size = debug_swap->external_sym_size; | |
3815 | external_pdr_size = debug_swap->external_pdr_size; | |
3816 | swap_sym_in = debug_swap->swap_sym_in; | |
3817 | swap_pdr_in = debug_swap->swap_pdr_in; | |
3818 | current_objfile = pst->objfile; | |
3819 | cur_fd = FDR_IDX (pst); | |
3820 | fh = ((cur_fd == -1) | |
3821 | ? (FDR *) NULL | |
3822 | : debug_info->fdr + cur_fd); | |
3823 | cur_fdr = fh; | |
3824 | ||
3825 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ | |
3826 | processing_gcc_compilation = 0; | |
3827 | if (fh != (FDR *) NULL && fh->csym >= 2) | |
3828 | { | |
3829 | SYMR sh; | |
3830 | ||
3831 | (*swap_sym_in) (cur_bfd, | |
3832 | ((char *) debug_info->external_sym | |
3833 | + (fh->isymBase + 1) * external_sym_size), | |
3834 | &sh); | |
3835 | if (STREQ (debug_info->ss + fh->issBase + sh.iss, | |
3836 | stabs_symbol)) | |
3837 | { | |
3838 | /* We indicate that this is a GCC compilation so that certain | |
3839 | features will be enabled in stabsread/dbxread. */ | |
3840 | processing_gcc_compilation = 2; | |
3841 | } | |
3842 | } | |
3843 | ||
3844 | if (processing_gcc_compilation != 0) | |
3845 | { | |
3846 | ||
3847 | /* This symbol table contains stabs-in-ecoff entries. */ | |
3848 | ||
3849 | /* Parse local symbols first */ | |
3850 | ||
3851 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */ | |
3852 | { | |
3853 | current_objfile = NULL; | |
3854 | return; | |
3855 | } | |
3856 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) | |
3857 | { | |
3858 | SYMR sh; | |
3859 | char *name; | |
3860 | CORE_ADDR valu; | |
3861 | ||
3862 | (*swap_sym_in) (cur_bfd, | |
3863 | (((char *) debug_info->external_sym) | |
3864 | + (fh->isymBase + cur_sdx) * external_sym_size), | |
3865 | &sh); | |
3866 | name = debug_info->ss + fh->issBase + sh.iss; | |
3867 | valu = sh.value; | |
3868 | /* XXX This is a hack. It will go away! */ | |
3869 | if (ECOFF_IS_STAB (&sh) || (name[0] == '#')) | |
3870 | { | |
3871 | int type_code = ECOFF_UNMARK_STAB (sh.index); | |
3872 | ||
3873 | /* We should never get non N_STAB symbols here, but they | |
c5aa993b JM |
3874 | should be harmless, so keep process_one_symbol from |
3875 | complaining about them. */ | |
c906108c SS |
3876 | if (type_code & N_STAB) |
3877 | { | |
16db6055 EZ |
3878 | /* If we found a trailing N_SO with no name, process |
3879 | it here instead of in process_one_symbol, so we | |
3880 | can keep a handle to its symtab. The symtab | |
3881 | would otherwise be ended twice, once in | |
3882 | process_one_symbol, and once after this loop. */ | |
3883 | if (type_code == N_SO | |
3884 | && last_source_file | |
3885 | && previous_stab_code != (unsigned char) N_SO | |
3886 | && *name == '\000') | |
3887 | { | |
3888 | valu += ANOFFSET (pst->section_offsets, | |
3889 | SECT_OFF_TEXT (pst->objfile)); | |
3890 | previous_stab_code = N_SO; | |
3891 | st = end_symtab (valu, pst->objfile, | |
3892 | SECT_OFF_TEXT (pst->objfile)); | |
3893 | end_stabs (); | |
3894 | last_symtab_ended = 1; | |
3895 | } | |
3896 | else | |
3897 | { | |
3898 | last_symtab_ended = 0; | |
3899 | process_one_symbol (type_code, 0, valu, name, | |
3900 | pst->section_offsets, pst->objfile); | |
3901 | } | |
c906108c SS |
3902 | } |
3903 | /* Similarly a hack. */ | |
3904 | else if (name[0] == '#') | |
3905 | { | |
3906 | process_one_symbol (N_SLINE, 0, valu, name, | |
3907 | pst->section_offsets, pst->objfile); | |
3908 | } | |
3909 | if (type_code == N_FUN) | |
3910 | { | |
3911 | /* Make up special symbol to contain | |
3912 | procedure specific info */ | |
3913 | struct mips_extra_func_info *e = | |
c5aa993b JM |
3914 | ((struct mips_extra_func_info *) |
3915 | obstack_alloc (¤t_objfile->symbol_obstack, | |
3916 | sizeof (struct mips_extra_func_info))); | |
c906108c SS |
3917 | struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME); |
3918 | ||
12b9c64f | 3919 | memset (e, 0, sizeof (struct mips_extra_func_info)); |
c906108c SS |
3920 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; |
3921 | SYMBOL_CLASS (s) = LOC_CONST; | |
3922 | SYMBOL_TYPE (s) = mdebug_type_void; | |
3923 | SYMBOL_VALUE (s) = (long) e; | |
3924 | e->pdr.framereg = -1; | |
3925 | add_symbol_to_list (s, &local_symbols); | |
3926 | } | |
3927 | } | |
3928 | else if (sh.st == stLabel) | |
3929 | { | |
3930 | if (sh.index == indexNil) | |
3931 | { | |
3932 | /* This is what the gcc2_compiled and __gnu_compiled_* | |
3933 | show up as. So don't complain. */ | |
3934 | ; | |
3935 | } | |
3936 | else | |
3937 | { | |
3938 | /* Handle encoded stab line number. */ | |
b8fbeb18 | 3939 | valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)); |
c906108c SS |
3940 | record_line (current_subfile, sh.index, valu); |
3941 | } | |
3942 | } | |
3943 | else if (sh.st == stProc || sh.st == stStaticProc | |
3944 | || sh.st == stStatic || sh.st == stEnd) | |
3945 | /* These are generated by gcc-2.x, do not complain */ | |
3946 | ; | |
3947 | else | |
23136709 | 3948 | complaint (&symfile_complaints, "unknown stabs symbol %s", name); |
c906108c | 3949 | } |
16db6055 EZ |
3950 | |
3951 | if (! last_symtab_ended) | |
3952 | { | |
5afc051b | 3953 | st = end_symtab (pst->texthigh, pst->objfile, SECT_OFF_TEXT (pst->objfile)); |
16db6055 EZ |
3954 | end_stabs (); |
3955 | } | |
c906108c SS |
3956 | |
3957 | /* Sort the symbol table now, we are done adding symbols to it. | |
c5aa993b | 3958 | We must do this before parse_procedure calls lookup_symbol. */ |
c906108c SS |
3959 | sort_symtab_syms (st); |
3960 | ||
3961 | /* There used to be a call to sort_blocks here, but this should not | |
c5aa993b JM |
3962 | be necessary for stabs symtabs. And as sort_blocks modifies the |
3963 | start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK, | |
3964 | it did the wrong thing if the first procedure in a file was | |
3965 | generated via asm statements. */ | |
c906108c SS |
3966 | |
3967 | /* Fill in procedure info next. */ | |
3968 | if (fh->cpd > 0) | |
3969 | { | |
3970 | PDR *pr_block; | |
3971 | struct cleanup *old_chain; | |
3972 | char *pdr_ptr; | |
3973 | char *pdr_end; | |
3974 | PDR *pdr_in; | |
3975 | PDR *pdr_in_end; | |
3976 | ||
3977 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
b8c9b27d | 3978 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
3979 | |
3980 | pdr_ptr = ((char *) debug_info->external_pdr | |
3981 | + fh->ipdFirst * external_pdr_size); | |
3982 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
3983 | pdr_in = pr_block; | |
3984 | for (; | |
3985 | pdr_ptr < pdr_end; | |
3986 | pdr_ptr += external_pdr_size, pdr_in++) | |
3987 | { | |
3988 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
3989 | ||
3990 | /* Determine lowest PDR address, the PDRs are not always | |
c5aa993b | 3991 | sorted. */ |
c906108c SS |
3992 | if (pdr_in == pr_block) |
3993 | lowest_pdr_addr = pdr_in->adr; | |
3994 | else if (pdr_in->adr < lowest_pdr_addr) | |
3995 | lowest_pdr_addr = pdr_in->adr; | |
3996 | } | |
3997 | ||
3998 | pdr_in = pr_block; | |
3999 | pdr_in_end = pdr_in + fh->cpd; | |
4000 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4001 | parse_procedure (pdr_in, st, pst); | |
4002 | ||
4003 | do_cleanups (old_chain); | |
4004 | } | |
4005 | } | |
4006 | else | |
4007 | { | |
4008 | /* This symbol table contains ordinary ecoff entries. */ | |
4009 | ||
4010 | int f_max; | |
4011 | int maxlines; | |
4012 | EXTR *ext_ptr; | |
4013 | ||
4014 | /* How many symbols will we need */ | |
4015 | /* FIXME, this does not count enum values. */ | |
4016 | f_max = pst->n_global_syms + pst->n_static_syms; | |
4017 | if (fh == 0) | |
4018 | { | |
4019 | maxlines = 0; | |
4020 | st = new_symtab ("unknown", f_max, 0, pst->objfile); | |
4021 | } | |
4022 | else | |
4023 | { | |
4024 | f_max += fh->csym + fh->cpd; | |
4025 | maxlines = 2 * fh->cline; | |
4026 | st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile); | |
4027 | ||
4028 | /* The proper language was already determined when building | |
4029 | the psymtab, use it. */ | |
4030 | st->language = PST_PRIVATE (pst)->pst_language; | |
4031 | } | |
4032 | ||
4033 | psymtab_language = st->language; | |
4034 | ||
4035 | lines = LINETABLE (st); | |
4036 | ||
4037 | /* Get a new lexical context */ | |
4038 | ||
4039 | push_parse_stack (); | |
4040 | top_stack->cur_st = st; | |
4041 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st), | |
4042 | STATIC_BLOCK); | |
5afc051b | 4043 | BLOCK_START (top_stack->cur_block) = pst->textlow; |
c906108c SS |
4044 | BLOCK_END (top_stack->cur_block) = 0; |
4045 | top_stack->blocktype = stFile; | |
4046 | top_stack->maxsyms = 2 * f_max; | |
4047 | top_stack->cur_type = 0; | |
4048 | top_stack->procadr = 0; | |
4049 | top_stack->numargs = 0; | |
4050 | found_ecoff_debugging_info = 0; | |
4051 | ||
4052 | if (fh) | |
4053 | { | |
4054 | char *sym_ptr; | |
4055 | char *sym_end; | |
4056 | ||
4057 | /* Parse local symbols first */ | |
4058 | sym_ptr = ((char *) debug_info->external_sym | |
4059 | + fh->isymBase * external_sym_size); | |
4060 | sym_end = sym_ptr + fh->csym * external_sym_size; | |
4061 | while (sym_ptr < sym_end) | |
4062 | { | |
4063 | SYMR sh; | |
4064 | int c; | |
4065 | ||
4066 | (*swap_sym_in) (cur_bfd, sym_ptr, &sh); | |
4067 | c = parse_symbol (&sh, | |
4068 | debug_info->external_aux + fh->iauxBase, | |
b8fbeb18 | 4069 | sym_ptr, fh->fBigendian, pst->section_offsets, pst->objfile); |
c906108c SS |
4070 | sym_ptr += c * external_sym_size; |
4071 | } | |
4072 | ||
4073 | /* Linenumbers. At the end, check if we can save memory. | |
4074 | parse_lines has to look ahead an arbitrary number of PDR | |
4075 | structures, so we swap them all first. */ | |
4076 | if (fh->cpd > 0) | |
4077 | { | |
4078 | PDR *pr_block; | |
4079 | struct cleanup *old_chain; | |
4080 | char *pdr_ptr; | |
4081 | char *pdr_end; | |
4082 | PDR *pdr_in; | |
4083 | PDR *pdr_in_end; | |
4084 | ||
4085 | pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); | |
4086 | ||
b8c9b27d | 4087 | old_chain = make_cleanup (xfree, pr_block); |
c906108c SS |
4088 | |
4089 | pdr_ptr = ((char *) debug_info->external_pdr | |
4090 | + fh->ipdFirst * external_pdr_size); | |
4091 | pdr_end = pdr_ptr + fh->cpd * external_pdr_size; | |
4092 | pdr_in = pr_block; | |
4093 | for (; | |
4094 | pdr_ptr < pdr_end; | |
4095 | pdr_ptr += external_pdr_size, pdr_in++) | |
4096 | { | |
4097 | (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); | |
4098 | ||
4099 | /* Determine lowest PDR address, the PDRs are not always | |
4100 | sorted. */ | |
4101 | if (pdr_in == pr_block) | |
4102 | lowest_pdr_addr = pdr_in->adr; | |
4103 | else if (pdr_in->adr < lowest_pdr_addr) | |
4104 | lowest_pdr_addr = pdr_in->adr; | |
4105 | } | |
4106 | ||
4107 | parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr); | |
4108 | if (lines->nitems < fh->cline) | |
4109 | lines = shrink_linetable (lines); | |
4110 | ||
4111 | /* Fill in procedure info next. */ | |
4112 | pdr_in = pr_block; | |
4113 | pdr_in_end = pdr_in + fh->cpd; | |
4114 | for (; pdr_in < pdr_in_end; pdr_in++) | |
4115 | parse_procedure (pdr_in, 0, pst); | |
4116 | ||
4117 | do_cleanups (old_chain); | |
4118 | } | |
4119 | } | |
4120 | ||
4121 | LINETABLE (st) = lines; | |
4122 | ||
4123 | /* .. and our share of externals. | |
c5aa993b JM |
4124 | XXX use the global list to speed up things here. how? |
4125 | FIXME, Maybe quit once we have found the right number of ext's? */ | |
c906108c SS |
4126 | top_stack->cur_st = st; |
4127 | top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), | |
4128 | GLOBAL_BLOCK); | |
4129 | top_stack->blocktype = stFile; | |
4130 | top_stack->maxsyms | |
4131 | = (debug_info->symbolic_header.isymMax | |
4132 | + debug_info->symbolic_header.ipdMax | |
4133 | + debug_info->symbolic_header.iextMax); | |
4134 | ||
4135 | ext_ptr = PST_PRIVATE (pst)->extern_tab; | |
4136 | for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) | |
b8fbeb18 | 4137 | parse_external (ext_ptr, fh->fBigendian, pst->section_offsets, pst->objfile); |
c906108c SS |
4138 | |
4139 | /* If there are undefined symbols, tell the user. | |
c5aa993b JM |
4140 | The alpha has an undefined symbol for every symbol that is |
4141 | from a shared library, so tell the user only if verbose is on. */ | |
c906108c SS |
4142 | if (info_verbose && n_undef_symbols) |
4143 | { | |
4144 | printf_filtered ("File %s contains %d unresolved references:", | |
4145 | st->filename, n_undef_symbols); | |
4146 | printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n", | |
4147 | n_undef_vars, n_undef_procs, n_undef_labels); | |
4148 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; | |
4149 | ||
4150 | } | |
4151 | pop_parse_stack (); | |
4152 | ||
4153 | st->primary = 1; | |
4154 | ||
c5aa993b | 4155 | /* Sort the symbol table now, we are done adding symbols to it. */ |
c906108c SS |
4156 | sort_symtab_syms (st); |
4157 | ||
4158 | sort_blocks (st); | |
4159 | } | |
4160 | ||
4161 | /* Now link the psymtab and the symtab. */ | |
4162 | pst->symtab = st; | |
4163 | ||
4164 | current_objfile = NULL; | |
4165 | } | |
4166 | \f | |
4167 | /* Ancillary parsing procedures. */ | |
4168 | ||
4169 | /* Return 1 if the symbol pointed to by SH has a cross reference | |
4170 | to an opaque aggregate type, else 0. */ | |
4171 | ||
4172 | static int | |
fba45db2 | 4173 | has_opaque_xref (FDR *fh, SYMR *sh) |
c906108c SS |
4174 | { |
4175 | TIR tir; | |
4176 | union aux_ext *ax; | |
4177 | RNDXR rn[1]; | |
4178 | unsigned int rf; | |
4179 | ||
4180 | if (sh->index == indexNil) | |
4181 | return 0; | |
4182 | ||
4183 | ax = debug_info->external_aux + fh->iauxBase + sh->index; | |
4184 | (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir); | |
4185 | if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum) | |
4186 | return 0; | |
4187 | ||
4188 | ax++; | |
4189 | (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn); | |
4190 | if (rn->rfd == 0xfff) | |
4191 | rf = AUX_GET_ISYM (fh->fBigendian, ax + 1); | |
4192 | else | |
4193 | rf = rn->rfd; | |
4194 | if (rf != -1) | |
4195 | return 0; | |
4196 | return 1; | |
4197 | } | |
4198 | ||
4199 | /* Lookup the type at relative index RN. Return it in TPP | |
4200 | if found and in any event come up with its name PNAME. | |
4201 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). | |
4202 | Return value says how many aux symbols we ate. */ | |
4203 | ||
4204 | static int | |
fba45db2 KB |
4205 | 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. */ |
4206 | char **pname, int bigend, char *sym_name) | |
c906108c SS |
4207 | { |
4208 | RNDXR rn[1]; | |
4209 | unsigned int rf; | |
4210 | int result = 1; | |
4211 | FDR *fh; | |
4212 | char *esh; | |
4213 | SYMR sh; | |
4214 | int xref_fd; | |
4215 | struct mdebug_pending *pend; | |
4216 | ||
c5aa993b | 4217 | *tpp = (struct type *) NULL; |
c906108c SS |
4218 | |
4219 | (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn); | |
4220 | ||
4221 | /* Escape index means 'the next one' */ | |
4222 | if (rn->rfd == 0xfff) | |
4223 | { | |
4224 | result++; | |
4225 | rf = AUX_GET_ISYM (bigend, ax + 1); | |
4226 | } | |
4227 | else | |
4228 | { | |
4229 | rf = rn->rfd; | |
4230 | } | |
4231 | ||
4232 | /* mips cc uses a rf of -1 for opaque struct definitions. | |
4233 | Set TYPE_FLAG_STUB for these types so that check_typedef will | |
4234 | resolve them if the struct gets defined in another compilation unit. */ | |
4235 | if (rf == -1) | |
4236 | { | |
4237 | *pname = "<undefined>"; | |
0b3d7c6d | 4238 | *tpp = init_type (type_code, 0, TYPE_FLAG_STUB, (char *) NULL, current_objfile); |
c906108c SS |
4239 | return result; |
4240 | } | |
4241 | ||
4242 | /* mips cc uses an escaped rn->index of 0 for struct return types | |
4243 | of procedures that were compiled without -g. These will always remain | |
4244 | undefined. */ | |
4245 | if (rn->rfd == 0xfff && rn->index == 0) | |
4246 | { | |
4247 | *pname = "<undefined>"; | |
4248 | return result; | |
4249 | } | |
4250 | ||
4251 | /* Find the relative file descriptor and the symbol in it. */ | |
4252 | fh = get_rfd (fd, rf); | |
4253 | xref_fd = fh - debug_info->fdr; | |
4254 | ||
4255 | if (rn->index >= fh->csym) | |
4256 | { | |
4257 | /* File indirect entry is corrupt. */ | |
4258 | *pname = "<illegal>"; | |
23136709 | 4259 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4260 | return result; |
4261 | } | |
4262 | ||
4263 | /* If we have processed this symbol then we left a forwarding | |
4264 | pointer to the type in the pending list. If not, we`ll put | |
4265 | it in a list of pending types, to be processed later when | |
4266 | the file will be. In any event, we collect the name for the | |
4267 | type here. */ | |
4268 | ||
4269 | esh = ((char *) debug_info->external_sym | |
4270 | + ((fh->isymBase + rn->index) | |
4271 | * debug_swap->external_sym_size)); | |
4272 | (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh); | |
4273 | ||
4274 | /* Make sure that this type of cross reference can be handled. */ | |
4275 | if ((sh.sc != scInfo | |
4276 | || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect | |
4277 | && sh.st != stStruct && sh.st != stUnion | |
4278 | && sh.st != stEnum)) | |
c5aa993b | 4279 | && (sh.st != stBlock || !SC_IS_COMMON (sh.sc))) |
c906108c SS |
4280 | { |
4281 | /* File indirect entry is corrupt. */ | |
4282 | *pname = "<illegal>"; | |
23136709 | 4283 | bad_rfd_entry_complaint (sym_name, xref_fd, rn->index); |
c906108c SS |
4284 | return result; |
4285 | } | |
4286 | ||
4287 | *pname = debug_info->ss + fh->issBase + sh.iss; | |
4288 | ||
4289 | pend = is_pending_symbol (fh, esh); | |
4290 | if (pend) | |
4291 | *tpp = pend->t; | |
4292 | else | |
4293 | { | |
4294 | /* We have not yet seen this type. */ | |
4295 | ||
4296 | if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect) | |
4297 | { | |
4298 | TIR tir; | |
4299 | ||
4300 | /* alpha cc puts out a stTypedef with a sh.iss of zero for | |
4301 | two cases: | |
4302 | a) forward declarations of structs/unions/enums which are not | |
c5aa993b JM |
4303 | defined in this compilation unit. |
4304 | For these the type will be void. This is a bad design decision | |
4305 | as cross referencing across compilation units is impossible | |
4306 | due to the missing name. | |
c906108c | 4307 | b) forward declarations of structs/unions/enums/typedefs which |
c5aa993b JM |
4308 | are defined later in this file or in another file in the same |
4309 | compilation unit. Irix5 cc uses a stIndirect symbol for this. | |
4310 | Simply cross reference those again to get the true type. | |
c906108c SS |
4311 | The forward references are not entered in the pending list and |
4312 | in the symbol table. */ | |
4313 | ||
4314 | (*debug_swap->swap_tir_in) (bigend, | |
4315 | &(debug_info->external_aux | |
4316 | + fh->iauxBase + sh.index)->a_ti, | |
4317 | &tir); | |
4318 | if (tir.tq0 != tqNil) | |
23136709 KB |
4319 | complaint (&symfile_complaints, |
4320 | "illegal tq0 in forward typedef for %s", sym_name); | |
c906108c SS |
4321 | switch (tir.bt) |
4322 | { | |
4323 | case btVoid: | |
4324 | *tpp = init_type (type_code, 0, 0, (char *) NULL, | |
4325 | current_objfile); | |
c5aa993b | 4326 | *pname = "<undefined>"; |
c906108c SS |
4327 | break; |
4328 | ||
4329 | case btStruct: | |
4330 | case btUnion: | |
4331 | case btEnum: | |
4332 | cross_ref (xref_fd, | |
4333 | (debug_info->external_aux | |
4334 | + fh->iauxBase + sh.index + 1), | |
4335 | tpp, type_code, pname, | |
4336 | fh->fBigendian, sym_name); | |
4337 | break; | |
4338 | ||
4339 | case btTypedef: | |
4340 | /* Follow a forward typedef. This might recursively | |
c5aa993b JM |
4341 | call cross_ref till we get a non typedef'ed type. |
4342 | FIXME: This is not correct behaviour, but gdb currently | |
4343 | cannot handle typedefs without type copying. Type | |
4344 | copying is impossible as we might have mutual forward | |
4345 | references between two files and the copied type would not | |
4346 | get filled in when we later parse its definition. */ | |
c906108c SS |
4347 | *tpp = parse_type (xref_fd, |
4348 | debug_info->external_aux + fh->iauxBase, | |
4349 | sh.index, | |
c5aa993b | 4350 | (int *) NULL, |
c906108c SS |
4351 | fh->fBigendian, |
4352 | debug_info->ss + fh->issBase + sh.iss); | |
4353 | add_pending (fh, esh, *tpp); | |
4354 | break; | |
4355 | ||
4356 | default: | |
23136709 KB |
4357 | complaint (&symfile_complaints, |
4358 | "illegal bt %d in forward typedef for %s", tir.bt, | |
4359 | sym_name); | |
c906108c SS |
4360 | *tpp = init_type (type_code, 0, 0, (char *) NULL, |
4361 | current_objfile); | |
4362 | break; | |
4363 | } | |
4364 | return result; | |
4365 | } | |
4366 | else if (sh.st == stTypedef) | |
4367 | { | |
4368 | /* Parse the type for a normal typedef. This might recursively call | |
4369 | cross_ref till we get a non typedef'ed type. | |
4370 | FIXME: This is not correct behaviour, but gdb currently | |
4371 | cannot handle typedefs without type copying. But type copying is | |
4372 | impossible as we might have mutual forward references between | |
4373 | two files and the copied type would not get filled in when | |
4374 | we later parse its definition. */ | |
4375 | *tpp = parse_type (xref_fd, | |
4376 | debug_info->external_aux + fh->iauxBase, | |
4377 | sh.index, | |
c5aa993b | 4378 | (int *) NULL, |
c906108c SS |
4379 | fh->fBigendian, |
4380 | debug_info->ss + fh->issBase + sh.iss); | |
4381 | } | |
4382 | else | |
4383 | { | |
4384 | /* Cross reference to a struct/union/enum which is defined | |
4385 | in another file in the same compilation unit but that file | |
4386 | has not been parsed yet. | |
4387 | Initialize the type only, it will be filled in when | |
4388 | it's definition is parsed. */ | |
4389 | *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); | |
4390 | } | |
4391 | add_pending (fh, esh, *tpp); | |
4392 | } | |
4393 | ||
4394 | /* We used one auxent normally, two if we got a "next one" rf. */ | |
4395 | return result; | |
4396 | } | |
4397 | ||
4398 | ||
4399 | /* Quick&dirty lookup procedure, to avoid the MI ones that require | |
4400 | keeping the symtab sorted */ | |
4401 | ||
4402 | static struct symbol * | |
fba45db2 KB |
4403 | mylookup_symbol (char *name, register struct block *block, |
4404 | namespace_enum namespace, enum address_class class) | |
c906108c | 4405 | { |
e88c90f2 DJ |
4406 | int i, inc; |
4407 | struct symbol *sym; | |
c906108c | 4408 | |
c906108c | 4409 | inc = name[0]; |
e88c90f2 | 4410 | ALL_BLOCK_SYMBOLS (block, i, sym) |
c906108c | 4411 | { |
c906108c SS |
4412 | if (SYMBOL_NAME (sym)[0] == inc |
4413 | && SYMBOL_NAMESPACE (sym) == namespace | |
4414 | && SYMBOL_CLASS (sym) == class | |
4415 | && strcmp (SYMBOL_NAME (sym), name) == 0) | |
4416 | return sym; | |
c906108c | 4417 | } |
e88c90f2 | 4418 | |
c906108c SS |
4419 | block = BLOCK_SUPERBLOCK (block); |
4420 | if (block) | |
4421 | return mylookup_symbol (name, block, namespace, class); | |
4422 | return 0; | |
4423 | } | |
4424 | ||
4425 | ||
4426 | /* Add a new symbol S to a block B. | |
4427 | Infrequently, we will need to reallocate the block to make it bigger. | |
4428 | We only detect this case when adding to top_stack->cur_block, since | |
4429 | that's the only time we know how big the block is. FIXME. */ | |
4430 | ||
4431 | static void | |
fba45db2 | 4432 | add_symbol (struct symbol *s, struct block *b) |
c906108c SS |
4433 | { |
4434 | int nsyms = BLOCK_NSYMS (b)++; | |
4435 | struct block *origb; | |
4436 | struct parse_stack *stackp; | |
4437 | ||
4438 | if (b == top_stack->cur_block && | |
4439 | nsyms >= top_stack->maxsyms) | |
4440 | { | |
23136709 KB |
4441 | complaint (&symfile_complaints, "block containing %s overfilled", |
4442 | SYMBOL_NAME (s)); | |
c906108c | 4443 | /* In this case shrink_block is actually grow_block, since |
c5aa993b | 4444 | BLOCK_NSYMS(b) is larger than its current size. */ |
c906108c SS |
4445 | origb = b; |
4446 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); | |
4447 | ||
4448 | /* Now run through the stack replacing pointers to the | |
c5aa993b JM |
4449 | original block. shrink_block has already done this |
4450 | for the blockvector and BLOCK_FUNCTION. */ | |
c906108c SS |
4451 | for (stackp = top_stack; stackp; stackp = stackp->next) |
4452 | { | |
4453 | if (stackp->cur_block == origb) | |
4454 | { | |
4455 | stackp->cur_block = b; | |
4456 | stackp->maxsyms = BLOCK_NSYMS (b); | |
4457 | } | |
4458 | } | |
4459 | } | |
4460 | BLOCK_SYM (b, nsyms) = s; | |
4461 | } | |
4462 | ||
4463 | /* Add a new block B to a symtab S */ | |
4464 | ||
4465 | static void | |
fba45db2 | 4466 | add_block (struct block *b, struct symtab *s) |
c906108c SS |
4467 | { |
4468 | struct blockvector *bv = BLOCKVECTOR (s); | |
4469 | ||
12b9c64f | 4470 | bv = (struct blockvector *) xrealloc ((void *) bv, |
c906108c SS |
4471 | (sizeof (struct blockvector) |
4472 | + BLOCKVECTOR_NBLOCKS (bv) | |
4473 | * sizeof (bv->block))); | |
4474 | if (bv != BLOCKVECTOR (s)) | |
4475 | BLOCKVECTOR (s) = bv; | |
4476 | ||
4477 | BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b; | |
4478 | } | |
4479 | ||
4480 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. | |
4481 | MIPS' linenumber encoding might need more than one byte | |
4482 | to describe it, LAST is used to detect these continuation lines. | |
4483 | ||
4484 | Combining lines with the same line number seems like a bad idea. | |
4485 | E.g: There could be a line number entry with the same line number after the | |
4486 | prologue and GDB should not ignore it (this is a better way to find | |
4487 | a prologue than mips_skip_prologue). | |
4488 | But due to the compressed line table format there are line number entries | |
4489 | for the same line which are needed to bridge the gap to the next | |
4490 | line number entry. These entries have a bogus address info with them | |
4491 | and we are unable to tell them from intended duplicate line number | |
4492 | entries. | |
4493 | This is another reason why -ggdb debugging format is preferable. */ | |
4494 | ||
4495 | static int | |
fba45db2 | 4496 | add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last) |
c906108c SS |
4497 | { |
4498 | /* DEC c89 sometimes produces zero linenos which confuse gdb. | |
4499 | Change them to something sensible. */ | |
4500 | if (lineno == 0) | |
4501 | lineno = 1; | |
4502 | if (last == 0) | |
4503 | last = -2; /* make sure we record first line */ | |
4504 | ||
4505 | if (last == lineno) /* skip continuation lines */ | |
4506 | return lineno; | |
4507 | ||
4508 | lt->item[lt->nitems].line = lineno; | |
4509 | lt->item[lt->nitems++].pc = adr << 2; | |
4510 | return lineno; | |
4511 | } | |
4512 | \f | |
4513 | /* Sorting and reordering procedures */ | |
4514 | ||
4515 | /* Blocks with a smaller low bound should come first */ | |
4516 | ||
4517 | static int | |
12b9c64f | 4518 | compare_blocks (const void *arg1, const void *arg2) |
c906108c SS |
4519 | { |
4520 | register int addr_diff; | |
4521 | struct block **b1 = (struct block **) arg1; | |
4522 | struct block **b2 = (struct block **) arg2; | |
4523 | ||
4524 | addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2))); | |
4525 | if (addr_diff == 0) | |
4526 | return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1))); | |
4527 | return addr_diff; | |
4528 | } | |
4529 | ||
4530 | /* Sort the blocks of a symtab S. | |
4531 | Reorder the blocks in the blockvector by code-address, | |
4532 | as required by some MI search routines */ | |
4533 | ||
4534 | static void | |
fba45db2 | 4535 | sort_blocks (struct symtab *s) |
c906108c SS |
4536 | { |
4537 | struct blockvector *bv = BLOCKVECTOR (s); | |
4538 | ||
4539 | if (BLOCKVECTOR_NBLOCKS (bv) <= 2) | |
4540 | { | |
4541 | /* Cosmetic */ | |
4542 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0) | |
4543 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0; | |
4544 | if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0) | |
4545 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0; | |
4546 | return; | |
4547 | } | |
4548 | /* | |
4549 | * This is very unfortunate: normally all functions are compiled in | |
4550 | * the order they are found, but if the file is compiled -O3 things | |
4551 | * are very different. It would be nice to find a reliable test | |
4552 | * to detect -O3 images in advance. | |
4553 | */ | |
4554 | if (BLOCKVECTOR_NBLOCKS (bv) > 3) | |
4555 | qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK), | |
4556 | BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK, | |
4557 | sizeof (struct block *), | |
4558 | compare_blocks); | |
4559 | ||
4560 | { | |
4561 | register CORE_ADDR high = 0; | |
4562 | register int i, j = BLOCKVECTOR_NBLOCKS (bv); | |
4563 | ||
4564 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) | |
4565 | if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i))) | |
4566 | high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)); | |
4567 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high; | |
4568 | } | |
4569 | ||
4570 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = | |
4571 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK)); | |
4572 | ||
4573 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4574 | BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4575 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = | |
4576 | BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
4577 | } | |
4578 | \f | |
4579 | ||
4580 | /* Constructor/restructor/destructor procedures */ | |
4581 | ||
4582 | /* Allocate a new symtab for NAME. Needs an estimate of how many symbols | |
4583 | MAXSYMS and linenumbers MAXLINES we'll put in it */ | |
4584 | ||
4585 | static struct symtab * | |
fba45db2 | 4586 | new_symtab (char *name, int maxsyms, int maxlines, struct objfile *objfile) |
c906108c SS |
4587 | { |
4588 | struct symtab *s = allocate_symtab (name, objfile); | |
4589 | ||
4590 | LINETABLE (s) = new_linetable (maxlines); | |
4591 | ||
4592 | /* All symtabs must have at least two blocks */ | |
4593 | BLOCKVECTOR (s) = new_bvect (2); | |
4594 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms); | |
4595 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms); | |
4596 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) = | |
4597 | BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
4598 | ||
4599 | s->free_code = free_linetable; | |
4600 | s->debugformat = obsavestring ("ECOFF", 5, | |
c5aa993b | 4601 | &objfile->symbol_obstack); |
c906108c SS |
4602 | return (s); |
4603 | } | |
4604 | ||
4605 | /* Allocate a new partial_symtab NAME */ | |
4606 | ||
4607 | static struct partial_symtab * | |
fba45db2 | 4608 | new_psymtab (char *name, struct objfile *objfile) |
c906108c SS |
4609 | { |
4610 | struct partial_symtab *psymtab; | |
4611 | ||
4612 | psymtab = allocate_psymtab (name, objfile); | |
d4f3574e | 4613 | psymtab->section_offsets = objfile->section_offsets; |
c906108c SS |
4614 | |
4615 | /* Keep a backpointer to the file's symbols */ | |
4616 | ||
4617 | psymtab->read_symtab_private = ((char *) | |
4618 | obstack_alloc (&objfile->psymbol_obstack, | |
4619 | sizeof (struct symloc))); | |
12b9c64f | 4620 | memset (psymtab->read_symtab_private, 0, sizeof (struct symloc)); |
c906108c SS |
4621 | CUR_BFD (psymtab) = cur_bfd; |
4622 | DEBUG_SWAP (psymtab) = debug_swap; | |
4623 | DEBUG_INFO (psymtab) = debug_info; | |
4624 | PENDING_LIST (psymtab) = pending_list; | |
4625 | ||
4626 | /* The way to turn this into a symtab is to call... */ | |
4627 | psymtab->read_symtab = mdebug_psymtab_to_symtab; | |
4628 | return (psymtab); | |
4629 | } | |
4630 | ||
4631 | ||
4632 | /* Allocate a linetable array of the given SIZE. Since the struct | |
4633 | already includes one item, we subtract one when calculating the | |
4634 | proper size to allocate. */ | |
4635 | ||
4636 | static struct linetable * | |
fba45db2 | 4637 | new_linetable (int size) |
c906108c SS |
4638 | { |
4639 | struct linetable *l; | |
4640 | ||
4641 | size = (size - 1) * sizeof (l->item) + sizeof (struct linetable); | |
4642 | l = (struct linetable *) xmalloc (size); | |
4643 | l->nitems = 0; | |
4644 | return l; | |
4645 | } | |
4646 | ||
4647 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, | |
4648 | I am not so sure about the 3.4 ones. | |
4649 | ||
4650 | Since the struct linetable already includes one item, we subtract one when | |
4651 | calculating the proper size to allocate. */ | |
4652 | ||
4653 | static struct linetable * | |
fba45db2 | 4654 | shrink_linetable (struct linetable *lt) |
c906108c SS |
4655 | { |
4656 | ||
12b9c64f | 4657 | return (struct linetable *) xrealloc ((void *) lt, |
c906108c SS |
4658 | (sizeof (struct linetable) |
4659 | + ((lt->nitems - 1) | |
4660 | * sizeof (lt->item)))); | |
4661 | } | |
4662 | ||
4663 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ | |
4664 | ||
4665 | static struct blockvector * | |
fba45db2 | 4666 | new_bvect (int nblocks) |
c906108c SS |
4667 | { |
4668 | struct blockvector *bv; | |
4669 | int size; | |
4670 | ||
4671 | size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); | |
4672 | bv = (struct blockvector *) xzalloc (size); | |
4673 | ||
4674 | BLOCKVECTOR_NBLOCKS (bv) = nblocks; | |
4675 | ||
4676 | return bv; | |
4677 | } | |
4678 | ||
4679 | /* Allocate and zero a new block of MAXSYMS symbols */ | |
4680 | ||
4681 | static struct block * | |
fba45db2 | 4682 | new_block (int maxsyms) |
c906108c SS |
4683 | { |
4684 | int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *); | |
4685 | ||
4686 | return (struct block *) xzalloc (size); | |
4687 | } | |
4688 | ||
4689 | /* Ooops, too big. Shrink block B in symtab S to its minimal size. | |
4690 | Shrink_block can also be used by add_symbol to grow a block. */ | |
4691 | ||
4692 | static struct block * | |
fba45db2 | 4693 | shrink_block (struct block *b, struct symtab *s) |
c906108c SS |
4694 | { |
4695 | struct block *new; | |
4696 | struct blockvector *bv = BLOCKVECTOR (s); | |
4697 | int i; | |
4698 | ||
4699 | /* Just reallocate it and fix references to the old one */ | |
4700 | ||
12b9c64f | 4701 | new = (struct block *) xrealloc ((void *) b, |
c906108c SS |
4702 | (sizeof (struct block) |
4703 | + ((BLOCK_NSYMS (b) - 1) | |
4704 | * sizeof (struct symbol *)))); | |
4705 | ||
261397f8 DJ |
4706 | /* FIXME: Not worth hashing this block as it's built. */ |
4707 | /* All callers should have created the block with new_block (), which | |
4708 | would mean it was not previously hashed. Make sure. */ | |
4709 | gdb_assert (BLOCK_HASHTABLE (new) == 0); | |
4710 | ||
c906108c | 4711 | /* Should chase pointers to old one. Fortunately, that`s just |
c5aa993b | 4712 | the block`s function and inferior blocks */ |
c906108c SS |
4713 | if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b) |
4714 | SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new; | |
4715 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) | |
4716 | if (BLOCKVECTOR_BLOCK (bv, i) == b) | |
4717 | BLOCKVECTOR_BLOCK (bv, i) = new; | |
4718 | else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b) | |
4719 | BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new; | |
4720 | return new; | |
4721 | } | |
4722 | ||
4723 | /* Create a new symbol with printname NAME */ | |
4724 | ||
4725 | static struct symbol * | |
fba45db2 | 4726 | new_symbol (char *name) |
c906108c SS |
4727 | { |
4728 | struct symbol *s = ((struct symbol *) | |
4729 | obstack_alloc (¤t_objfile->symbol_obstack, | |
4730 | sizeof (struct symbol))); | |
4731 | ||
12b9c64f | 4732 | memset (s, 0, sizeof (*s)); |
c906108c SS |
4733 | SYMBOL_NAME (s) = obsavestring (name, strlen (name), |
4734 | ¤t_objfile->symbol_obstack); | |
4735 | SYMBOL_LANGUAGE (s) = psymtab_language; | |
4736 | SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack); | |
4737 | return s; | |
4738 | } | |
4739 | ||
4740 | /* Create a new type with printname NAME */ | |
4741 | ||
4742 | static struct type * | |
fba45db2 | 4743 | new_type (char *name) |
c906108c SS |
4744 | { |
4745 | struct type *t; | |
4746 | ||
4747 | t = alloc_type (current_objfile); | |
4748 | TYPE_NAME (t) = name; | |
4749 | TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default; | |
4750 | return t; | |
4751 | } | |
4752 | \f | |
4753 | /* Read ECOFF debugging information from a BFD section. This is | |
4754 | called from elfread.c. It parses the section into a | |
4755 | ecoff_debug_info struct, and then lets the rest of the file handle | |
4756 | it as normal. */ | |
4757 | ||
4758 | void | |
fba45db2 KB |
4759 | elfmdebug_build_psymtabs (struct objfile *objfile, |
4760 | const struct ecoff_debug_swap *swap, asection *sec) | |
c906108c SS |
4761 | { |
4762 | bfd *abfd = objfile->obfd; | |
4763 | struct ecoff_debug_info *info; | |
4764 | ||
4765 | info = ((struct ecoff_debug_info *) | |
4766 | obstack_alloc (&objfile->psymbol_obstack, | |
4767 | sizeof (struct ecoff_debug_info))); | |
4768 | ||
4769 | if (!(*swap->read_debug_info) (abfd, sec, info)) | |
4770 | error ("Error reading ECOFF debugging information: %s", | |
4771 | bfd_errmsg (bfd_get_error ())); | |
4772 | ||
d4f3574e | 4773 | mdebug_build_psymtabs (objfile, swap, info); |
c906108c SS |
4774 | } |
4775 | \f | |
4776 | ||
4777 | /* Things used for calling functions in the inferior. | |
4778 | These functions are exported to our companion | |
4779 | mips-tdep.c file and are here because they play | |
4780 | with the symbol-table explicitly. */ | |
4781 | ||
4782 | /* Sigtramp: make sure we have all the necessary information | |
4783 | about the signal trampoline code. Since the official code | |
4784 | from MIPS does not do so, we make up that information ourselves. | |
4785 | If they fix the library (unlikely) this code will neutralize itself. */ | |
4786 | ||
4787 | /* FIXME: This function is called only by mips-tdep.c. It needs to be | |
4788 | here because it calls functions defined in this file, but perhaps | |
4789 | this could be handled in a better way. Only compile it in when | |
4790 | tm-mips.h is included. */ | |
4791 | ||
4792 | #ifdef TM_MIPS_H | |
4793 | ||
4794 | void | |
fba45db2 | 4795 | fixup_sigtramp (void) |
c906108c SS |
4796 | { |
4797 | struct symbol *s; | |
4798 | struct symtab *st; | |
4799 | struct block *b, *b0 = NULL; | |
4800 | ||
4801 | sigtramp_address = -1; | |
4802 | ||
4803 | /* We have to handle the following cases here: | |
4804 | a) The Mips library has a sigtramp label within sigvec. | |
4805 | b) Irix has a _sigtramp which we want to use, but it also has sigvec. */ | |
4806 | s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL); | |
4807 | if (s != 0) | |
4808 | { | |
4809 | b0 = SYMBOL_BLOCK_VALUE (s); | |
4810 | s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL); | |
4811 | } | |
4812 | if (s == 0) | |
4813 | { | |
4814 | /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */ | |
4815 | s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL); | |
4816 | } | |
4817 | ||
4818 | /* But maybe this program uses its own version of sigvec */ | |
4819 | if (s == 0) | |
4820 | return; | |
4821 | ||
4822 | /* Did we or MIPSco fix the library ? */ | |
4823 | if (SYMBOL_CLASS (s) == LOC_BLOCK) | |
4824 | { | |
4825 | sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s)); | |
4826 | sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s)); | |
4827 | return; | |
4828 | } | |
4829 | ||
4830 | sigtramp_address = SYMBOL_VALUE (s); | |
4831 | sigtramp_end = sigtramp_address + 0x88; /* black magic */ | |
4832 | ||
4833 | /* But what symtab does it live in ? */ | |
4834 | st = find_pc_symtab (SYMBOL_VALUE (s)); | |
4835 | ||
4836 | /* | |
4837 | * Ok, there goes the fix: turn it into a procedure, with all the | |
4838 | * needed info. Note we make it a nested procedure of sigvec, | |
4839 | * which is the way the (assembly) code is actually written. | |
4840 | */ | |
4841 | SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; | |
4842 | SYMBOL_CLASS (s) = LOC_BLOCK; | |
4843 | SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL, | |
4844 | st->objfile); | |
4845 | TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = mdebug_type_void; | |
4846 | ||
4847 | /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */ | |
4848 | b = new_block (1); | |
4849 | SYMBOL_BLOCK_VALUE (s) = b; | |
4850 | BLOCK_START (b) = sigtramp_address; | |
4851 | BLOCK_END (b) = sigtramp_end; | |
4852 | BLOCK_FUNCTION (b) = s; | |
4853 | BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0); | |
4854 | add_block (b, st); | |
4855 | sort_blocks (st); | |
4856 | ||
4857 | /* Make a MIPS_EFI_SYMBOL_NAME entry for it */ | |
4858 | { | |
4859 | struct mips_extra_func_info *e = | |
c5aa993b JM |
4860 | ((struct mips_extra_func_info *) |
4861 | xzalloc (sizeof (struct mips_extra_func_info))); | |
c906108c SS |
4862 | |
4863 | e->numargs = 0; /* the kernel thinks otherwise */ | |
4864 | e->pdr.frameoffset = 32; | |
4865 | e->pdr.framereg = SP_REGNUM; | |
4866 | /* Note that setting pcreg is no longer strictly necessary as | |
4867 | mips_frame_saved_pc is now aware of signal handler frames. */ | |
4868 | e->pdr.pcreg = PC_REGNUM; | |
4869 | e->pdr.regmask = -2; | |
4870 | /* Offset to saved r31, in the sigtramp case the saved registers | |
4871 | are above the frame in the sigcontext. | |
4872 | We have 4 alignment bytes, 12 bytes for onstack, mask and pc, | |
4873 | 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp | |
4874 | and 32 * 4 bytes for the floating point registers. */ | |
4875 | e->pdr.regoffset = 4 + 12 + 31 * 4; | |
4876 | e->pdr.fregmask = -1; | |
4877 | /* Offset to saved f30 (first saved *double* register). */ | |
4878 | e->pdr.fregoffset = 4 + 12 + 32 * 4 + 12 + 30 * 4; | |
4879 | e->pdr.isym = (long) s; | |
4880 | e->pdr.adr = sigtramp_address; | |
4881 | ||
4882 | current_objfile = st->objfile; /* Keep new_symbol happy */ | |
4883 | s = new_symbol (MIPS_EFI_SYMBOL_NAME); | |
4884 | SYMBOL_VALUE (s) = (long) e; | |
4885 | SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; | |
4886 | SYMBOL_CLASS (s) = LOC_CONST; | |
4887 | SYMBOL_TYPE (s) = mdebug_type_void; | |
4888 | current_objfile = NULL; | |
4889 | } | |
4890 | ||
4891 | BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s; | |
4892 | } | |
4893 | ||
c5aa993b | 4894 | #endif /* TM_MIPS_H */ |
c906108c SS |
4895 | |
4896 | void | |
fba45db2 | 4897 | _initialize_mdebugread (void) |
c906108c SS |
4898 | { |
4899 | mdebug_type_void = | |
4900 | init_type (TYPE_CODE_VOID, 1, | |
4901 | 0, | |
4902 | "void", (struct objfile *) NULL); | |
4903 | mdebug_type_char = | |
4904 | init_type (TYPE_CODE_INT, 1, | |
4905 | 0, | |
4906 | "char", (struct objfile *) NULL); | |
4907 | mdebug_type_unsigned_char = | |
4908 | init_type (TYPE_CODE_INT, 1, | |
4909 | TYPE_FLAG_UNSIGNED, | |
4910 | "unsigned char", (struct objfile *) NULL); | |
4911 | mdebug_type_short = | |
4912 | init_type (TYPE_CODE_INT, 2, | |
4913 | 0, | |
4914 | "short", (struct objfile *) NULL); | |
4915 | mdebug_type_unsigned_short = | |
4916 | init_type (TYPE_CODE_INT, 2, | |
4917 | TYPE_FLAG_UNSIGNED, | |
4918 | "unsigned short", (struct objfile *) NULL); | |
4919 | mdebug_type_int_32 = | |
4920 | init_type (TYPE_CODE_INT, 4, | |
4921 | 0, | |
4922 | "int", (struct objfile *) NULL); | |
4923 | mdebug_type_unsigned_int_32 = | |
4924 | init_type (TYPE_CODE_INT, 4, | |
4925 | TYPE_FLAG_UNSIGNED, | |
4926 | "unsigned int", (struct objfile *) NULL); | |
4927 | mdebug_type_int_64 = | |
4928 | init_type (TYPE_CODE_INT, 8, | |
4929 | 0, | |
4930 | "int", (struct objfile *) NULL); | |
4931 | mdebug_type_unsigned_int_64 = | |
4932 | init_type (TYPE_CODE_INT, 8, | |
4933 | TYPE_FLAG_UNSIGNED, | |
4934 | "unsigned int", (struct objfile *) NULL); | |
4935 | mdebug_type_long_32 = | |
4936 | init_type (TYPE_CODE_INT, 4, | |
4937 | 0, | |
4938 | "long", (struct objfile *) NULL); | |
4939 | mdebug_type_unsigned_long_32 = | |
4940 | init_type (TYPE_CODE_INT, 4, | |
4941 | TYPE_FLAG_UNSIGNED, | |
4942 | "unsigned long", (struct objfile *) NULL); | |
4943 | mdebug_type_long_64 = | |
4944 | init_type (TYPE_CODE_INT, 8, | |
4945 | 0, | |
4946 | "long", (struct objfile *) NULL); | |
4947 | mdebug_type_unsigned_long_64 = | |
4948 | init_type (TYPE_CODE_INT, 8, | |
4949 | TYPE_FLAG_UNSIGNED, | |
4950 | "unsigned long", (struct objfile *) NULL); | |
4951 | mdebug_type_long_long_64 = | |
4952 | init_type (TYPE_CODE_INT, 8, | |
4953 | 0, | |
4954 | "long long", (struct objfile *) NULL); | |
c5aa993b | 4955 | mdebug_type_unsigned_long_long_64 = |
c906108c SS |
4956 | init_type (TYPE_CODE_INT, 8, |
4957 | TYPE_FLAG_UNSIGNED, | |
4958 | "unsigned long long", (struct objfile *) NULL); | |
4959 | mdebug_type_adr_32 = | |
4960 | init_type (TYPE_CODE_PTR, 4, | |
4961 | TYPE_FLAG_UNSIGNED, | |
4962 | "adr_32", (struct objfile *) NULL); | |
4963 | TYPE_TARGET_TYPE (mdebug_type_adr_32) = mdebug_type_void; | |
4964 | mdebug_type_adr_64 = | |
4965 | init_type (TYPE_CODE_PTR, 8, | |
4966 | TYPE_FLAG_UNSIGNED, | |
4967 | "adr_64", (struct objfile *) NULL); | |
4968 | TYPE_TARGET_TYPE (mdebug_type_adr_64) = mdebug_type_void; | |
4969 | mdebug_type_float = | |
4970 | init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
4971 | 0, | |
4972 | "float", (struct objfile *) NULL); | |
4973 | mdebug_type_double = | |
4974 | init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
4975 | 0, | |
4976 | "double", (struct objfile *) NULL); | |
4977 | mdebug_type_complex = | |
4978 | init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
4979 | 0, | |
4980 | "complex", (struct objfile *) NULL); | |
4981 | TYPE_TARGET_TYPE (mdebug_type_complex) = mdebug_type_float; | |
4982 | mdebug_type_double_complex = | |
4983 | init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
4984 | 0, | |
4985 | "double complex", (struct objfile *) NULL); | |
4986 | TYPE_TARGET_TYPE (mdebug_type_double_complex) = mdebug_type_double; | |
4987 | ||
4988 | /* Is a "string" the way btString means it the same as TYPE_CODE_STRING? | |
4989 | FIXME. */ | |
4990 | mdebug_type_string = | |
4991 | init_type (TYPE_CODE_STRING, | |
4992 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
4993 | 0, "string", | |
4994 | (struct objfile *) NULL); | |
4995 | ||
4996 | /* We use TYPE_CODE_INT to print these as integers. Does this do any | |
4997 | good? Would we be better off with TYPE_CODE_ERROR? Should | |
4998 | TYPE_CODE_ERROR print things in hex if it knows the size? */ | |
4999 | mdebug_type_fixed_dec = | |
5000 | init_type (TYPE_CODE_INT, | |
5001 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
5002 | 0, "fixed decimal", | |
5003 | (struct objfile *) NULL); | |
5004 | ||
5005 | mdebug_type_float_dec = | |
5006 | init_type (TYPE_CODE_ERROR, | |
5007 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
5008 | 0, "floating decimal", | |
5009 | (struct objfile *) NULL); | |
5010 | ||
5011 | nodebug_func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0, | |
5012 | "<function, no debug info>", NULL); | |
5013 | TYPE_TARGET_TYPE (nodebug_func_symbol_type) = mdebug_type_int; | |
5014 | nodebug_var_symbol_type = | |
5015 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
5016 | "<variable, no debug info>", NULL); | |
5017 | } |