Commit | Line | Data |
---|---|---|
bd5635a1 | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
b9e58503 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 |
65ce5df4 | 3 | Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
c3a21801 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
c3a21801 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
c3a21801 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
c3a21801 JG |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
9404978d MT |
20 | |
21 | /* This module provides three functions: dbx_symfile_init, | |
22 | which initializes to read a symbol file; dbx_new_init, which | |
23 | discards existing cached information when all symbols are being | |
24 | discarded; and dbx_symfile_read, which reads a symbol table | |
25 | from a file. | |
26 | ||
27 | dbx_symfile_read only does the minimum work necessary for letting the | |
28 | user "name" things symbolically; it does not read the entire symtab. | |
29 | Instead, it reads the external and static symbols and puts them in partial | |
30 | symbol tables. When more extensive information is requested of a | |
31 | file, the corresponding partial symbol table is mutated into a full | |
32 | fledged symbol table by going back and reading the symbols | |
33 | for real. dbx_psymtab_to_symtab() is the function that does this */ | |
bd5635a1 | 34 | |
bd5635a1 | 35 | #include "defs.h" |
318bf84f | 36 | #include <string.h> |
bd5635a1 | 37 | |
9342ecb9 | 38 | #if defined(USG) || defined(__CYGNUSCLIB__) |
bd5635a1 RP |
39 | #include <sys/types.h> |
40 | #include <fcntl.h> | |
bd5635a1 RP |
41 | #endif |
42 | ||
afe4ca15 JG |
43 | #include <obstack.h> |
44 | #include <sys/param.h> | |
021959e2 | 45 | #ifndef NO_SYS_FILE |
afe4ca15 | 46 | #include <sys/file.h> |
021959e2 | 47 | #endif |
afe4ca15 | 48 | #include <sys/stat.h> |
bd5635a1 | 49 | #include <ctype.h> |
afe4ca15 JG |
50 | #include "symtab.h" |
51 | #include "breakpoint.h" | |
52 | #include "command.h" | |
53 | #include "target.h" | |
54 | #include "gdbcore.h" /* for bfd stuff */ | |
55 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ | |
56 | #include "symfile.h" | |
3624c875 | 57 | #include "objfiles.h" |
c0302457 | 58 | #include "buildsym.h" |
3416d90b | 59 | #include "stabsread.h" |
2af231b8 | 60 | #include "gdb-stabs.h" |
3416d90b | 61 | #include "demangle.h" |
51b80b00 FF |
62 | #include "language.h" /* Needed inside partial-stab.h */ |
63 | #include "complaints.h" | |
afe4ca15 | 64 | |
7e258d18 PB |
65 | #include "aout/aout64.h" |
66 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */ | |
bd5635a1 | 67 | |
2c7ab4ca JK |
68 | #if !defined (SEEK_SET) |
69 | #define SEEK_SET 0 | |
70 | #define SEEK_CUR 1 | |
71 | #endif | |
989d9cba | 72 | \f |
4a35d6e9 | 73 | /* Each partial symbol table entry contains a pointer to private data for the |
989d9cba JK |
74 | sym_read function to use when expanding a partial symbol table entry |
75 | to a full symbol table entry. */ | |
4a35d6e9 | 76 | |
989d9cba | 77 | struct symloc { |
4a35d6e9 | 78 | |
989d9cba JK |
79 | /* Offset within the file symbol table of first local symbol for this |
80 | file. */ | |
4a35d6e9 | 81 | |
4a35d6e9 | 82 | int ldsymoff; |
989d9cba JK |
83 | |
84 | /* Length (in bytes) of the section of the symbol table devoted to | |
85 | this file's symbols (actually, the section bracketed may contain | |
86 | more than just this file's symbols). If ldsymlen is 0, the only | |
87 | reason for this thing's existence is the dependency list. Nothing | |
88 | else will happen when it is read in. */ | |
89 | ||
4a35d6e9 | 90 | int ldsymlen; |
989d9cba JK |
91 | |
92 | /* The size of each symbol in the symbol file (in external form). */ | |
93 | ||
9342ecb9 | 94 | int symbol_size; |
989d9cba JK |
95 | |
96 | /* Further information needed to locate the symbols if they are in | |
97 | an ELF file. */ | |
98 | ||
9342ecb9 JG |
99 | int symbol_offset; |
100 | int string_offset; | |
101 | int file_string_offset; | |
4a35d6e9 FF |
102 | }; |
103 | ||
989d9cba JK |
104 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) |
105 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
106 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) | |
107 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
108 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
109 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
110 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
111 | ||
112 | \f | |
bd5635a1 RP |
113 | /* Macro to determine which symbols to ignore when reading the first symbol |
114 | of a file. Some machines override this definition. */ | |
115 | #ifndef IGNORE_SYMBOL | |
116 | /* This code is used on Ultrix systems. Ignore it */ | |
117 | #define IGNORE_SYMBOL(type) (type == (int)N_NSYMS) | |
118 | #endif | |
119 | ||
2e4964ad FF |
120 | /* Remember what we deduced to be the source language of this psymtab. */ |
121 | ||
122 | static enum language psymtab_language = language_unknown; | |
123 | ||
bd5635a1 RP |
124 | /* Nonzero means give verbose info on gdb action. From main.c. */ |
125 | extern int info_verbose; | |
126 | ||
7d9884b9 | 127 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
bd5635a1 | 128 | |
c0302457 | 129 | static bfd *symfile_bfd; |
bd5635a1 | 130 | |
afe4ca15 JG |
131 | /* The size of each symbol in the symbol file (in external form). |
132 | This is set by dbx_symfile_read when building psymtabs, and by | |
133 | dbx_psymtab_to_symtab when building symtabs. */ | |
134 | ||
135 | static unsigned symbol_size; | |
136 | ||
9342ecb9 JG |
137 | /* This is the offset of the symbol table in the executable file */ |
138 | static unsigned symbol_table_offset; | |
139 | ||
140 | /* This is the offset of the string table in the executable file */ | |
141 | static unsigned string_table_offset; | |
142 | ||
143 | /* For elf+stab executables, the n_strx field is not a simple index | |
144 | into the string table. Instead, each .o file has a base offset | |
145 | in the string table, and the associated symbols contain offsets | |
146 | from this base. The following two variables contain the base | |
147 | offset for the current and next .o files. */ | |
148 | static unsigned int file_string_table_offset; | |
149 | static unsigned int next_file_string_table_offset; | |
a66e8382 SG |
150 | |
151 | /* .o and NLM files contain unrelocated addresses which are based at 0. When | |
152 | non-zero, this flag disables some of the special cases for Solaris elf+stab | |
153 | text addresses at location 0. */ | |
154 | ||
155 | static int symfile_relocatable = 0; | |
bfe2f12b JL |
156 | |
157 | /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are relative | |
158 | to the function start address. */ | |
159 | ||
160 | static int block_address_function_relative = 0; | |
9d2b8d50 | 161 | \f |
ab52cc44 JK |
162 | /* The lowest text address we have yet encountered. This is needed |
163 | because in an a.out file, there is no header field which tells us | |
164 | what address the program is actually going to be loaded at, so we | |
165 | need to make guesses based on the symbols (which *are* relocated to | |
166 | reflect the address it will be loaded at). */ | |
9d2b8d50 | 167 | static CORE_ADDR lowest_text_address; |
9342ecb9 | 168 | |
bd5635a1 RP |
169 | /* Complaints about the symbols we have encountered. */ |
170 | ||
bd5635a1 RP |
171 | struct complaint lbrac_complaint = |
172 | {"bad block start address patched", 0, 0}; | |
173 | ||
bd5635a1 RP |
174 | struct complaint string_table_offset_complaint = |
175 | {"bad string table offset in symbol %d", 0, 0}; | |
176 | ||
177 | struct complaint unknown_symtype_complaint = | |
0c4d2cc2 | 178 | {"unknown symbol type %s", 0, 0}; |
bd5635a1 | 179 | |
65ce5df4 | 180 | struct complaint unknown_symchar_complaint = |
b30c81b6 | 181 | {"unknown symbol descriptor `%c'", 0, 0}; |
65ce5df4 | 182 | |
bd5635a1 RP |
183 | struct complaint lbrac_rbrac_complaint = |
184 | {"block start larger than block end", 0, 0}; | |
7d9884b9 JG |
185 | |
186 | struct complaint lbrac_unmatched_complaint = | |
187 | {"unmatched N_LBRAC before symtab pos %d", 0, 0}; | |
188 | ||
189 | struct complaint lbrac_mismatch_complaint = | |
190 | {"N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", 0, 0}; | |
9342ecb9 JG |
191 | |
192 | struct complaint repeated_header_complaint = | |
26a859ec | 193 | {"\"repeated\" header file %s not previously seen, at symtab pos %d", 0, 0}; |
bd5635a1 | 194 | \f |
bd5635a1 RP |
195 | /* During initial symbol readin, we need to have a structure to keep |
196 | track of which psymtabs have which bincls in them. This structure | |
197 | is used during readin to setup the list of dependencies within each | |
198 | partial symbol table. */ | |
199 | ||
200 | struct header_file_location | |
201 | { | |
202 | char *name; /* Name of header file */ | |
203 | int instance; /* See above */ | |
204 | struct partial_symtab *pst; /* Partial symtab that has the | |
205 | BINCL/EINCL defs for this file */ | |
206 | }; | |
207 | ||
208 | /* The actual list and controling variables */ | |
209 | static struct header_file_location *bincl_list, *next_bincl; | |
210 | static int bincls_allocated; | |
211 | ||
021959e2 JG |
212 | /* Local function prototypes */ |
213 | ||
214 | static void | |
80d68b1d FF |
215 | free_header_files PARAMS ((void)); |
216 | ||
217 | static void | |
218 | init_header_files PARAMS ((void)); | |
021959e2 | 219 | |
574dac8e JK |
220 | static void |
221 | read_ofile_symtab PARAMS ((struct partial_symtab *)); | |
021959e2 JG |
222 | |
223 | static void | |
224 | dbx_psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
225 | ||
226 | static void | |
4c07f28d | 227 | dbx_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *)); |
021959e2 | 228 | |
5801f348 JK |
229 | static void |
230 | read_dbx_dynamic_symtab PARAMS ((struct section_offsets *, | |
231 | struct objfile *objfile)); | |
232 | ||
021959e2 | 233 | static void |
2af231b8 JG |
234 | read_dbx_symtab PARAMS ((struct section_offsets *, struct objfile *, |
235 | CORE_ADDR, int)); | |
021959e2 JG |
236 | |
237 | static void | |
238 | free_bincl_list PARAMS ((struct objfile *)); | |
239 | ||
240 | static struct partial_symtab * | |
241 | find_corresponding_bincl_psymtab PARAMS ((char *, int)); | |
242 | ||
243 | static void | |
244 | add_bincl_to_list PARAMS ((struct partial_symtab *, char *, int)); | |
245 | ||
246 | static void | |
247 | init_bincl_list PARAMS ((int, struct objfile *)); | |
248 | ||
249 | static void | |
3624c875 | 250 | init_psymbol_list PARAMS ((struct objfile *)); |
021959e2 JG |
251 | |
252 | static char * | |
253 | dbx_next_symbol_text PARAMS ((void)); | |
254 | ||
255 | static void | |
256 | fill_symbuf PARAMS ((bfd *)); | |
257 | ||
258 | static void | |
80d68b1d FF |
259 | dbx_symfile_init PARAMS ((struct objfile *)); |
260 | ||
261 | static void | |
262 | dbx_new_init PARAMS ((struct objfile *)); | |
021959e2 JG |
263 | |
264 | static void | |
2af231b8 | 265 | dbx_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); |
021959e2 JG |
266 | |
267 | static void | |
80d68b1d | 268 | dbx_symfile_finish PARAMS ((struct objfile *)); |
021959e2 JG |
269 | |
270 | static void | |
271 | record_minimal_symbol PARAMS ((char *, CORE_ADDR, int, struct objfile *)); | |
272 | ||
273 | static void | |
274 | add_new_header_file PARAMS ((char *, int)); | |
275 | ||
276 | static void | |
277 | add_old_header_file PARAMS ((char *, int)); | |
278 | ||
279 | static void | |
280 | add_this_object_header_file PARAMS ((int)); | |
281 | ||
80d68b1d | 282 | /* Free up old header file tables */ |
bd5635a1 | 283 | |
021959e2 | 284 | static void |
80d68b1d | 285 | free_header_files () |
bd5635a1 RP |
286 | { |
287 | register int i; | |
bd5635a1 | 288 | |
80d68b1d FF |
289 | if (header_files != NULL) |
290 | { | |
291 | for (i = 0; i < n_header_files; i++) | |
292 | { | |
293 | free (header_files[i].name); | |
294 | } | |
ac88ca20 | 295 | free ((PTR)header_files); |
80d68b1d FF |
296 | header_files = NULL; |
297 | n_header_files = 0; | |
298 | } | |
299 | if (this_object_header_files) | |
300 | { | |
ac88ca20 | 301 | free ((PTR)this_object_header_files); |
80d68b1d FF |
302 | this_object_header_files = NULL; |
303 | } | |
304 | n_allocated_header_files = 0; | |
305 | n_allocated_this_object_header_files = 0; | |
306 | } | |
307 | ||
308 | /* Allocate new header file tables */ | |
309 | ||
310 | static void | |
311 | init_header_files () | |
312 | { | |
bd5635a1 | 313 | n_header_files = 0; |
80d68b1d FF |
314 | n_allocated_header_files = 10; |
315 | header_files = (struct header_file *) | |
316 | xmalloc (10 * sizeof (struct header_file)); | |
bd5635a1 RP |
317 | |
318 | n_allocated_this_object_header_files = 10; | |
319 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); | |
320 | } | |
321 | ||
bd5635a1 RP |
322 | /* Add header file number I for this object file |
323 | at the next successive FILENUM. */ | |
324 | ||
325 | static void | |
326 | add_this_object_header_file (i) | |
327 | int i; | |
328 | { | |
329 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
330 | { | |
331 | n_allocated_this_object_header_files *= 2; | |
332 | this_object_header_files | |
021959e2 | 333 | = (int *) xrealloc ((char *) this_object_header_files, |
bd5635a1 RP |
334 | n_allocated_this_object_header_files * sizeof (int)); |
335 | } | |
336 | ||
337 | this_object_header_files[n_this_object_header_files++] = i; | |
338 | } | |
339 | ||
340 | /* Add to this file an "old" header file, one already seen in | |
341 | a previous object file. NAME is the header file's name. | |
342 | INSTANCE is its instance code, to select among multiple | |
343 | symbol tables for the same header file. */ | |
344 | ||
345 | static void | |
346 | add_old_header_file (name, instance) | |
347 | char *name; | |
348 | int instance; | |
349 | { | |
350 | register struct header_file *p = header_files; | |
351 | register int i; | |
352 | ||
353 | for (i = 0; i < n_header_files; i++) | |
2e4964ad | 354 | if (STREQ (p[i].name, name) && instance == p[i].instance) |
bd5635a1 RP |
355 | { |
356 | add_this_object_header_file (i); | |
357 | return; | |
358 | } | |
26a859ec | 359 | complain (&repeated_header_complaint, name, symnum); |
bd5635a1 RP |
360 | } |
361 | ||
362 | /* Add to this file a "new" header file: definitions for its types follow. | |
363 | NAME is the header file's name. | |
364 | Most often this happens only once for each distinct header file, | |
365 | but not necessarily. If it happens more than once, INSTANCE has | |
366 | a different value each time, and references to the header file | |
367 | use INSTANCE values to select among them. | |
368 | ||
369 | dbx output contains "begin" and "end" markers for each new header file, | |
370 | but at this level we just need to know which files there have been; | |
371 | so we record the file when its "begin" is seen and ignore the "end". */ | |
372 | ||
373 | static void | |
374 | add_new_header_file (name, instance) | |
375 | char *name; | |
376 | int instance; | |
377 | { | |
378 | register int i; | |
bd5635a1 RP |
379 | |
380 | /* Make sure there is room for one more header file. */ | |
381 | ||
382 | if (n_header_files == n_allocated_header_files) | |
383 | { | |
384 | n_allocated_header_files *= 2; | |
385 | header_files = (struct header_file *) | |
021959e2 JG |
386 | xrealloc ((char *) header_files, |
387 | (n_allocated_header_files * sizeof (struct header_file))); | |
bd5635a1 RP |
388 | } |
389 | ||
390 | /* Create an entry for this header file. */ | |
391 | ||
392 | i = n_header_files++; | |
393 | header_files[i].name = savestring (name, strlen(name)); | |
394 | header_files[i].instance = instance; | |
395 | header_files[i].length = 10; | |
396 | header_files[i].vector | |
397 | = (struct type **) xmalloc (10 * sizeof (struct type *)); | |
4ed3a9ea | 398 | memset (header_files[i].vector, 0, 10 * sizeof (struct type *)); |
bd5635a1 RP |
399 | |
400 | add_this_object_header_file (i); | |
401 | } | |
402 | ||
bd5635a1 RP |
403 | #if 0 |
404 | static struct type ** | |
405 | explicit_lookup_type (real_filenum, index) | |
406 | int real_filenum, index; | |
407 | { | |
408 | register struct header_file *f = &header_files[real_filenum]; | |
409 | ||
410 | if (index >= f->length) | |
411 | { | |
412 | f->length *= 2; | |
413 | f->vector = (struct type **) | |
414 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
4ed97c9a RP |
415 | memset (&f->vector[f->length / 2], |
416 | '\0', f->length * sizeof (struct type *) / 2); | |
bd5635a1 RP |
417 | } |
418 | return &f->vector[index]; | |
419 | } | |
420 | #endif | |
421 | \f | |
9bba3334 | 422 | static void |
021959e2 | 423 | record_minimal_symbol (name, address, type, objfile) |
bd5635a1 RP |
424 | char *name; |
425 | CORE_ADDR address; | |
426 | int type; | |
021959e2 | 427 | struct objfile *objfile; |
bd5635a1 | 428 | { |
021959e2 | 429 | enum minimal_symbol_type ms_type; |
a66e8382 | 430 | int section; |
0c4d2cc2 | 431 | |
b8ec9a79 JK |
432 | switch (type) |
433 | { | |
a66e8382 SG |
434 | case N_TEXT | N_EXT: |
435 | ms_type = mst_text; | |
436 | section = SECT_OFF_TEXT; | |
437 | break; | |
438 | case N_DATA | N_EXT: | |
439 | ms_type = mst_data; | |
440 | section = SECT_OFF_DATA; | |
441 | break; | |
442 | case N_BSS | N_EXT: | |
443 | ms_type = mst_bss; | |
444 | section = SECT_OFF_BSS; | |
445 | break; | |
446 | case N_ABS | N_EXT: | |
447 | ms_type = mst_abs; | |
448 | section = -1; | |
449 | break; | |
0c4d2cc2 | 450 | #ifdef N_SETV |
a66e8382 SG |
451 | case N_SETV | N_EXT: |
452 | ms_type = mst_data; | |
453 | section = SECT_OFF_DATA; | |
454 | break; | |
b8ec9a79 JK |
455 | case N_SETV: |
456 | /* I don't think this type actually exists; since a N_SETV is the result | |
457 | of going over many .o files, it doesn't make sense to have one | |
458 | file local. */ | |
459 | ms_type = mst_file_data; | |
a66e8382 | 460 | section = SECT_OFF_DATA; |
b8ec9a79 | 461 | break; |
0c4d2cc2 | 462 | #endif |
05c81f45 | 463 | case N_TEXT: |
b8ec9a79 JK |
464 | case N_NBTEXT: |
465 | case N_FN: | |
466 | case N_FN_SEQ: | |
b8ec9a79 | 467 | ms_type = mst_file_text; |
a66e8382 | 468 | section = SECT_OFF_TEXT; |
b8ec9a79 | 469 | break; |
b8ec9a79 JK |
470 | case N_DATA: |
471 | ms_type = mst_file_data; | |
472 | ||
473 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
474 | Record it as global even if it's local, not global, so | |
05c81f45 SEF |
475 | lookup_minimal_symbol can find it. We don't check symbol_leading_char |
476 | because for SunOS4 it always is '_'. */ | |
b8ec9a79 JK |
477 | if (name[8] == 'C' && STREQ ("__DYNAMIC", name)) |
478 | ms_type = mst_data; | |
479 | ||
480 | /* Same with virtual function tables, both global and static. */ | |
481 | { | |
482 | char *tempstring = name; | |
483 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) | |
484 | ++tempstring; | |
485 | if (VTBL_PREFIX_P ((tempstring))) | |
486 | ms_type = mst_data; | |
487 | } | |
a66e8382 | 488 | section = SECT_OFF_DATA; |
b8ec9a79 | 489 | break; |
b8ec9a79 JK |
490 | case N_BSS: |
491 | ms_type = mst_file_bss; | |
a66e8382 SG |
492 | section = SECT_OFF_BSS; |
493 | break; | |
494 | default: | |
495 | ms_type = mst_unknown; | |
496 | section = -1; | |
b8ec9a79 | 497 | break; |
0c4d2cc2 | 498 | } |
bd5635a1 | 499 | |
bfe2f12b | 500 | if ((ms_type == mst_file_text || ms_type == mst_text) |
9d2b8d50 JK |
501 | && address < lowest_text_address) |
502 | lowest_text_address = address; | |
503 | ||
a66e8382 | 504 | prim_record_minimal_symbol_and_info |
b8ec9a79 JK |
505 | (obsavestring (name, strlen (name), &objfile -> symbol_obstack), |
506 | address, | |
6545c6a0 | 507 | ms_type, |
a66e8382 SG |
508 | NULL, |
509 | section, | |
6545c6a0 | 510 | objfile); |
bd5635a1 RP |
511 | } |
512 | \f | |
513 | /* Scan and build partial symbols for a symbol file. | |
514 | We have been initialized by a call to dbx_symfile_init, which | |
3624c875 FF |
515 | put all the relevant info into a "struct dbx_symfile_info", |
516 | hung off the objfile structure. | |
bd5635a1 | 517 | |
2af231b8 JG |
518 | SECTION_OFFSETS contains offsets relative to which the symbols in the |
519 | various sections are (depending where the sections were actually loaded). | |
bd5635a1 RP |
520 | MAINLINE is true if we are reading the main symbol |
521 | table (as opposed to a shared lib or dynamically loaded file). */ | |
522 | ||
9bba3334 | 523 | static void |
2af231b8 | 524 | dbx_symfile_read (objfile, section_offsets, mainline) |
80d68b1d | 525 | struct objfile *objfile; |
2af231b8 | 526 | struct section_offsets *section_offsets; |
bd5635a1 RP |
527 | int mainline; /* FIXME comments above */ |
528 | { | |
80d68b1d | 529 | bfd *sym_bfd; |
bd5635a1 | 530 | int val; |
0eb22669 | 531 | struct cleanup *back_to; |
bd5635a1 | 532 | |
a66e8382 SG |
533 | val = strlen (objfile->name); |
534 | ||
535 | /* .o and .nlm files are relocatables with text, data and bss segs based at | |
536 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for | |
537 | symbols with a value of 0. XXX - This is a Krock. Solaris stabs-in-elf | |
538 | should be fixed to determine pst->textlow without using this text seg of | |
539 | 0 fixup crap. */ | |
540 | ||
541 | if (strcmp (&objfile->name[val-2], ".o") == 0 | |
542 | || strcmp (&objfile->name[val-4], ".nlm") == 0) | |
543 | symfile_relocatable = 1; | |
544 | ||
bfe2f12b JL |
545 | /* This is true for Solaris (and all other systems which put stabs |
546 | in sections, hopefully, since it would be silly to do things | |
547 | differently from Solaris), and false for SunOS4 and other a.out | |
548 | file formats. */ | |
549 | block_address_function_relative = | |
550 | ((0 == strncmp (bfd_get_target (objfile->obfd), "elf", 3)) | |
551 | || (0 == strncmp (bfd_get_target (objfile->obfd), "som", 3)) | |
552 | || (0 == strncmp (bfd_get_target (objfile->obfd), "coff", 4)) | |
553 | || (0 == strncmp (bfd_get_target (objfile->obfd), "nlm", 3))); | |
554 | ||
80d68b1d | 555 | sym_bfd = objfile->obfd; |
2c7ab4ca | 556 | val = bfd_seek (objfile->obfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); |
bd5635a1 | 557 | if (val < 0) |
80d68b1d | 558 | perror_with_name (objfile->name); |
bd5635a1 | 559 | |
66eeea27 | 560 | /* If we are reinitializing, or if we have never loaded syms yet, init */ |
80d68b1d | 561 | if (mainline || objfile->global_psymbols.size == 0 || objfile->static_psymbols.size == 0) |
3624c875 | 562 | init_psymbol_list (objfile); |
66eeea27 | 563 | |
9342ecb9 JG |
564 | symbol_size = DBX_SYMBOL_SIZE (objfile); |
565 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
afe4ca15 | 566 | |
bd5635a1 | 567 | pending_blocks = 0; |
0eb22669 | 568 | back_to = make_cleanup (really_free_pendings, 0); |
bd5635a1 | 569 | |
021959e2 JG |
570 | init_minimal_symbol_collection (); |
571 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
572 | |
573 | /* Now that the symbol table data of the executable file are all in core, | |
574 | process them and define symbols accordingly. */ | |
575 | ||
2af231b8 | 576 | read_dbx_symtab (section_offsets, objfile, |
3624c875 FF |
577 | bfd_section_vma (sym_bfd, DBX_TEXT_SECT (objfile)), |
578 | bfd_section_size (sym_bfd, DBX_TEXT_SECT (objfile))); | |
bd5635a1 | 579 | |
26a859ec | 580 | /* Add the dynamic symbols. */ |
5801f348 | 581 | |
26a859ec | 582 | read_dbx_dynamic_symtab (section_offsets, objfile); |
5801f348 | 583 | |
021959e2 JG |
584 | /* Install any minimal symbols that have been collected as the current |
585 | minimal symbols for this objfile. */ | |
bd5635a1 | 586 | |
80d68b1d | 587 | install_minimal_symbols (objfile); |
bd5635a1 | 588 | |
0eb22669 | 589 | do_cleanups (back_to); |
bd5635a1 RP |
590 | } |
591 | ||
9404978d MT |
592 | /* Initialize anything that needs initializing when a completely new |
593 | symbol file is specified (not just adding some symbols from another | |
594 | file, e.g. a shared library). */ | |
bd5635a1 | 595 | |
9bba3334 | 596 | static void |
ac88ca20 JG |
597 | dbx_new_init (ignore) |
598 | struct objfile *ignore; | |
bd5635a1 | 599 | { |
3416d90b | 600 | stabsread_new_init (); |
c0302457 | 601 | buildsym_new_init (); |
80d68b1d | 602 | init_header_files (); |
bd5635a1 RP |
603 | } |
604 | ||
605 | ||
606 | /* dbx_symfile_init () | |
607 | is the dbx-specific initialization routine for reading symbols. | |
80d68b1d | 608 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
609 | the BFD for the file whose symbols are being read, and a slot for a pointer |
610 | to "private data" which we fill with goodies. | |
611 | ||
612 | We read the string table into malloc'd space and stash a pointer to it. | |
613 | ||
614 | Since BFD doesn't know how to read debug symbols in a format-independent | |
615 | way (and may never do so...), we have to do it ourselves. We will never | |
616 | be called unless this is an a.out (or very similar) file. | |
617 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
618 | ||
69a272c4 FF |
619 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
620 | ||
9bba3334 | 621 | static void |
80d68b1d FF |
622 | dbx_symfile_init (objfile) |
623 | struct objfile *objfile; | |
bd5635a1 RP |
624 | { |
625 | int val; | |
80d68b1d | 626 | bfd *sym_bfd = objfile->obfd; |
bd5635a1 | 627 | char *name = bfd_get_filename (sym_bfd); |
69a272c4 | 628 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; |
bd5635a1 RP |
629 | |
630 | /* Allocate struct to keep track of the symfile */ | |
965a5c32 | 631 | objfile->sym_stab_info = (PTR) |
3624c875 | 632 | xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info)); |
bd5635a1 RP |
633 | |
634 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
bd5635a1 RP |
635 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
636 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
040b9597 | 637 | |
bd5635a1 RP |
638 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
639 | ||
784fd92b | 640 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; |
3624c875 FF |
641 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); |
642 | if (!DBX_TEXT_SECT (objfile)) | |
9342ecb9 JG |
643 | error ("Can't find .text section in symbol file"); |
644 | ||
bf18ac80 | 645 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); |
7da1e27d | 646 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); |
9342ecb9 | 647 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; |
3624c875 FF |
648 | |
649 | /* Read the string table and stash it away in the psymbol_obstack. It is | |
650 | only needed as long as we need to expand psymbols into full symbols, | |
651 | so when we blow away the psymbol the string table goes away as well. | |
652 | Note that gdb used to use the results of attempting to malloc the | |
653 | string table, based on the size it read, as a form of sanity check | |
654 | for botched byte swapping, on the theory that a byte swapped string | |
655 | table size would be so totally bogus that the malloc would fail. Now | |
656 | that we put in on the psymbol_obstack, we can't do this since gdb gets | |
657 | a fatal error (out of virtual memory) if the size is bogus. We can | |
69a272c4 FF |
658 | however at least check to see if the size is less than the size of |
659 | the size field itself, or larger than the size of the entire file. | |
660 | Note that all valid string tables have a size greater than zero, since | |
661 | the bytes used to hold the size are included in the count. */ | |
3624c875 | 662 | |
69a272c4 FF |
663 | if (STRING_TABLE_OFFSET == 0) |
664 | { | |
65ce5df4 JG |
665 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET |
666 | will never be zero, even when there is no string table. This | |
667 | would appear to be a bug in bfd. */ | |
69a272c4 FF |
668 | DBX_STRINGTAB_SIZE (objfile) = 0; |
669 | DBX_STRINGTAB (objfile) = NULL; | |
670 | } | |
671 | else | |
672 | { | |
2c7ab4ca | 673 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
69a272c4 FF |
674 | if (val < 0) |
675 | perror_with_name (name); | |
676 | ||
677 | memset ((PTR) size_temp, 0, sizeof (size_temp)); | |
678 | val = bfd_read ((PTR) size_temp, sizeof (size_temp), 1, sym_bfd); | |
679 | if (val < 0) | |
65ce5df4 JG |
680 | { |
681 | perror_with_name (name); | |
682 | } | |
683 | else if (val == 0) | |
684 | { | |
685 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
686 | EOF if there is no string table, and attempting to read the size | |
687 | from EOF will read zero bytes. */ | |
688 | DBX_STRINGTAB_SIZE (objfile) = 0; | |
689 | DBX_STRINGTAB (objfile) = NULL; | |
690 | } | |
691 | else | |
692 | { | |
693 | /* Read some data that would appear to be the string table size. | |
694 | If there really is a string table, then it is probably the right | |
695 | size. Byteswap if necessary and validate the size. Note that | |
696 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
697 | random data that happened to be at STRING_TABLE_OFFSET, because | |
698 | bfd can't tell us there is no string table, the sanity checks may | |
699 | or may not catch this. */ | |
700 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); | |
701 | ||
702 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) | |
703 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
704 | error ("ridiculous string table size (%d bytes).", | |
705 | DBX_STRINGTAB_SIZE (objfile)); | |
706 | ||
707 | DBX_STRINGTAB (objfile) = | |
708 | (char *) obstack_alloc (&objfile -> psymbol_obstack, | |
709 | DBX_STRINGTAB_SIZE (objfile)); | |
710 | ||
711 | /* Now read in the string table in one big gulp. */ | |
712 | ||
2c7ab4ca | 713 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
65ce5df4 JG |
714 | if (val < 0) |
715 | perror_with_name (name); | |
716 | val = bfd_read (DBX_STRINGTAB (objfile), DBX_STRINGTAB_SIZE (objfile), 1, | |
717 | sym_bfd); | |
718 | if (val != DBX_STRINGTAB_SIZE (objfile)) | |
719 | perror_with_name (name); | |
720 | } | |
69a272c4 | 721 | } |
bd5635a1 | 722 | } |
80d68b1d FF |
723 | |
724 | /* Perform any local cleanups required when we are done with a particular | |
725 | objfile. I.E, we are in the process of discarding all symbol information | |
726 | for an objfile, freeing up all memory held for it, and unlinking the | |
727 | objfile struct from the global list of known objfiles. */ | |
728 | ||
729 | static void | |
730 | dbx_symfile_finish (objfile) | |
731 | struct objfile *objfile; | |
732 | { | |
965a5c32 | 733 | if (objfile->sym_stab_info != NULL) |
80d68b1d | 734 | { |
965a5c32 | 735 | mfree (objfile -> md, objfile->sym_stab_info); |
80d68b1d FF |
736 | } |
737 | free_header_files (); | |
738 | } | |
739 | ||
bd5635a1 RP |
740 | \f |
741 | /* Buffer for reading the symbol table entries. */ | |
afe4ca15 | 742 | static struct internal_nlist symbuf[4096]; |
bd5635a1 RP |
743 | static int symbuf_idx; |
744 | static int symbuf_end; | |
745 | ||
9342ecb9 JG |
746 | /* Name of last function encountered. Used in Solaris to approximate |
747 | object file boundaries. */ | |
748 | static char *last_function_name; | |
749 | ||
bd5635a1 RP |
750 | /* The address in memory of the string table of the object file we are |
751 | reading (which might not be the "main" object file, but might be a | |
752 | shared library or some other dynamically loaded thing). This is set | |
753 | by read_dbx_symtab when building psymtabs, and by read_ofile_symtab | |
754 | when building symtabs, and is used only by next_symbol_text. */ | |
755 | static char *stringtab_global; | |
756 | ||
757 | /* Refill the symbol table input buffer | |
758 | and set the variables that control fetching entries from it. | |
759 | Reports an error if no data available. | |
760 | This function can read past the end of the symbol table | |
761 | (into the string table) but this does no harm. */ | |
762 | ||
7d9884b9 JG |
763 | static void |
764 | fill_symbuf (sym_bfd) | |
765 | bfd *sym_bfd; | |
bd5635a1 | 766 | { |
ac88ca20 | 767 | int nbytes = bfd_read ((PTR)symbuf, sizeof (symbuf), 1, sym_bfd); |
bd5635a1 | 768 | if (nbytes < 0) |
7d9884b9 | 769 | perror_with_name (bfd_get_filename (sym_bfd)); |
bd5635a1 RP |
770 | else if (nbytes == 0) |
771 | error ("Premature end of file reading symbol table"); | |
afe4ca15 | 772 | symbuf_end = nbytes / symbol_size; |
bd5635a1 | 773 | symbuf_idx = 0; |
bd5635a1 RP |
774 | } |
775 | ||
7d9884b9 | 776 | #define SWAP_SYMBOL(symp, abfd) \ |
bd5635a1 | 777 | { \ |
7d9884b9 | 778 | (symp)->n_strx = bfd_h_get_32(abfd, \ |
afe4ca15 | 779 | (unsigned char *)&(symp)->n_strx); \ |
7d9884b9 | 780 | (symp)->n_desc = bfd_h_get_16 (abfd, \ |
bd5635a1 | 781 | (unsigned char *)&(symp)->n_desc); \ |
7d9884b9 | 782 | (symp)->n_value = bfd_h_get_32 (abfd, \ |
bd5635a1 RP |
783 | (unsigned char *)&(symp)->n_value); \ |
784 | } | |
785 | ||
786 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
787 | that hasn't been swapped. Swap the symbol at the same time | |
788 | that symbuf_idx is incremented. */ | |
789 | ||
790 | /* dbx allows the text of a symbol name to be continued into the | |
791 | next symbol name! When such a continuation is encountered | |
792 | (a \ at the end of the text of a name) | |
793 | call this function to get the continuation. */ | |
794 | ||
021959e2 | 795 | static char * |
aab77d5f | 796 | dbx_next_symbol_text () |
bd5635a1 RP |
797 | { |
798 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 799 | fill_symbuf (symfile_bfd); |
bd5635a1 | 800 | symnum++; |
7d9884b9 | 801 | SWAP_SYMBOL(&symbuf[symbuf_idx], symfile_bfd); |
9342ecb9 JG |
802 | return symbuf[symbuf_idx++].n_strx + stringtab_global |
803 | + file_string_table_offset; | |
bd5635a1 RP |
804 | } |
805 | \f | |
806 | /* Initializes storage for all of the partial symbols that will be | |
807 | created by read_dbx_symtab and subsidiaries. */ | |
808 | ||
809 | static void | |
3624c875 | 810 | init_psymbol_list (objfile) |
021959e2 | 811 | struct objfile *objfile; |
bd5635a1 RP |
812 | { |
813 | /* Free any previously allocated psymbol lists. */ | |
021959e2 | 814 | if (objfile -> global_psymbols.list) |
ac88ca20 | 815 | mfree (objfile -> md, (PTR)objfile -> global_psymbols.list); |
021959e2 | 816 | if (objfile -> static_psymbols.list) |
ac88ca20 | 817 | mfree (objfile -> md, (PTR)objfile -> static_psymbols.list); |
bd5635a1 RP |
818 | |
819 | /* Current best guess is that there are approximately a twentieth | |
820 | of the total symbols (in a debugging file) are global or static | |
821 | oriented symbols */ | |
3624c875 FF |
822 | objfile -> global_psymbols.size = DBX_SYMCOUNT (objfile) / 10; |
823 | objfile -> static_psymbols.size = DBX_SYMCOUNT (objfile) / 10; | |
021959e2 | 824 | objfile -> global_psymbols.next = objfile -> global_psymbols.list = (struct partial_symbol *) |
318bf84f | 825 | xmmalloc (objfile -> md, objfile -> global_psymbols.size * sizeof (struct partial_symbol)); |
021959e2 | 826 | objfile -> static_psymbols.next = objfile -> static_psymbols.list = (struct partial_symbol *) |
318bf84f | 827 | xmmalloc (objfile -> md, objfile -> static_psymbols.size * sizeof (struct partial_symbol)); |
bd5635a1 RP |
828 | } |
829 | ||
830 | /* Initialize the list of bincls to contain none and have some | |
831 | allocated. */ | |
832 | ||
833 | static void | |
021959e2 | 834 | init_bincl_list (number, objfile) |
bd5635a1 | 835 | int number; |
021959e2 | 836 | struct objfile *objfile; |
bd5635a1 RP |
837 | { |
838 | bincls_allocated = number; | |
839 | next_bincl = bincl_list = (struct header_file_location *) | |
318bf84f | 840 | xmmalloc (objfile -> md, bincls_allocated * sizeof(struct header_file_location)); |
bd5635a1 RP |
841 | } |
842 | ||
843 | /* Add a bincl to the list. */ | |
844 | ||
845 | static void | |
846 | add_bincl_to_list (pst, name, instance) | |
847 | struct partial_symtab *pst; | |
848 | char *name; | |
849 | int instance; | |
850 | { | |
851 | if (next_bincl >= bincl_list + bincls_allocated) | |
852 | { | |
853 | int offset = next_bincl - bincl_list; | |
854 | bincls_allocated *= 2; | |
855 | bincl_list = (struct header_file_location *) | |
318bf84f | 856 | xmrealloc (pst->objfile->md, (char *)bincl_list, |
bd5635a1 RP |
857 | bincls_allocated * sizeof (struct header_file_location)); |
858 | next_bincl = bincl_list + offset; | |
859 | } | |
860 | next_bincl->pst = pst; | |
861 | next_bincl->instance = instance; | |
862 | next_bincl++->name = name; | |
863 | } | |
864 | ||
865 | /* Given a name, value pair, find the corresponding | |
866 | bincl in the list. Return the partial symtab associated | |
867 | with that header_file_location. */ | |
868 | ||
9bba3334 | 869 | static struct partial_symtab * |
bd5635a1 RP |
870 | find_corresponding_bincl_psymtab (name, instance) |
871 | char *name; | |
872 | int instance; | |
873 | { | |
874 | struct header_file_location *bincl; | |
875 | ||
876 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
877 | if (bincl->instance == instance | |
2e4964ad | 878 | && STREQ (name, bincl->name)) |
bd5635a1 RP |
879 | return bincl->pst; |
880 | ||
26a859ec | 881 | complain (&repeated_header_complaint, name, symnum); |
bd5635a1 RP |
882 | return (struct partial_symtab *) 0; |
883 | } | |
884 | ||
885 | /* Free the storage allocated for the bincl list. */ | |
886 | ||
887 | static void | |
021959e2 JG |
888 | free_bincl_list (objfile) |
889 | struct objfile *objfile; | |
bd5635a1 | 890 | { |
ac88ca20 | 891 | mfree (objfile -> md, (PTR)bincl_list); |
bd5635a1 RP |
892 | bincls_allocated = 0; |
893 | } | |
894 | ||
5801f348 JK |
895 | /* Scan a SunOs dynamic symbol table for symbols of interest and |
896 | add them to the minimal symbol table. */ | |
897 | ||
898 | static void | |
899 | read_dbx_dynamic_symtab (section_offsets, objfile) | |
900 | struct section_offsets *section_offsets; | |
901 | struct objfile *objfile; | |
902 | { | |
903 | bfd *abfd = objfile->obfd; | |
192b64e7 | 904 | struct cleanup *back_to; |
5801f348 | 905 | int counter; |
192b64e7 ILT |
906 | long dynsym_size; |
907 | long dynsym_count; | |
908 | asymbol **dynsyms; | |
909 | asymbol **symptr; | |
910 | arelent **relptr; | |
911 | long dynrel_size; | |
912 | long dynrel_count; | |
913 | arelent **dynrels; | |
5801f348 | 914 | CORE_ADDR sym_value; |
f69ecb9c | 915 | char *name; |
5801f348 JK |
916 | |
917 | /* Check that the symbol file has dynamic symbols that we know about. | |
918 | bfd_arch_unknown can happen if we are reading a sun3 symbol file | |
919 | on a sun4 host (and vice versa) and bfd is not configured | |
920 | --with-target=all. This would trigger an assertion in bfd/sunos.c, | |
921 | so we ignore the dynamic symbols in this case. */ | |
922 | if (bfd_get_flavour (abfd) != bfd_target_aout_flavour | |
923 | || (bfd_get_file_flags (abfd) & DYNAMIC) == 0 | |
192b64e7 | 924 | || bfd_get_arch (abfd) == bfd_arch_unknown) |
5801f348 JK |
925 | return; |
926 | ||
192b64e7 ILT |
927 | dynsym_size = bfd_get_dynamic_symtab_upper_bound (abfd); |
928 | if (dynsym_size < 0) | |
5801f348 JK |
929 | return; |
930 | ||
192b64e7 ILT |
931 | dynsyms = (asymbol **) xmalloc (dynsym_size); |
932 | back_to = make_cleanup (free, dynsyms); | |
933 | ||
934 | dynsym_count = bfd_canonicalize_dynamic_symtab (abfd, dynsyms); | |
935 | if (dynsym_count < 0) | |
936 | { | |
937 | do_cleanups (back_to); | |
938 | return; | |
939 | } | |
940 | ||
5801f348 JK |
941 | /* Enter dynamic symbols into the minimal symbol table |
942 | if this is a stripped executable. */ | |
943 | if (bfd_get_symcount (abfd) <= 0) | |
944 | { | |
192b64e7 ILT |
945 | symptr = dynsyms; |
946 | for (counter = 0; counter < dynsym_count; counter++, symptr++) | |
5801f348 | 947 | { |
192b64e7 ILT |
948 | asymbol *sym = *symptr; |
949 | asection *sec; | |
950 | int type; | |
951 | ||
192b64e7 | 952 | sec = bfd_get_section (sym); |
be78eb1a PS |
953 | |
954 | /* BFD symbols are section relative. */ | |
0683ac4b PS |
955 | sym_value = sym->value + sec->vma; |
956 | ||
192b64e7 | 957 | if (bfd_get_section_flags (abfd, sec) & SEC_CODE) |
5801f348 | 958 | { |
192b64e7 ILT |
959 | sym_value += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
960 | type = N_TEXT; | |
5801f348 | 961 | } |
192b64e7 ILT |
962 | else if (bfd_get_section_flags (abfd, sec) & SEC_DATA) |
963 | { | |
964 | sym_value += ANOFFSET (section_offsets, SECT_OFF_DATA); | |
965 | type = N_DATA; | |
966 | } | |
967 | else if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) | |
5801f348 | 968 | { |
192b64e7 ILT |
969 | sym_value += ANOFFSET (section_offsets, SECT_OFF_BSS); |
970 | type = N_BSS; | |
5801f348 JK |
971 | } |
972 | else | |
192b64e7 ILT |
973 | continue; |
974 | ||
975 | if (sym->flags & BSF_GLOBAL) | |
976 | type |= N_EXT; | |
977 | ||
b9e58503 PS |
978 | record_minimal_symbol ((char *) bfd_asymbol_name (sym), sym_value, |
979 | type, objfile); | |
5801f348 JK |
980 | } |
981 | } | |
982 | ||
983 | /* Symbols from shared libraries have a dynamic relocation entry | |
984 | that points to the associated slot in the procedure linkage table. | |
985 | We make a mininal symbol table entry with type mst_solib_trampoline | |
986 | at the address in the procedure linkage table. */ | |
192b64e7 ILT |
987 | dynrel_size = bfd_get_dynamic_reloc_upper_bound (abfd); |
988 | if (dynrel_size < 0) | |
989 | { | |
990 | do_cleanups (back_to); | |
991 | return; | |
992 | } | |
993 | ||
994 | dynrels = (arelent **) xmalloc (dynrel_size); | |
995 | make_cleanup (free, dynrels); | |
5801f348 | 996 | |
192b64e7 ILT |
997 | dynrel_count = bfd_canonicalize_dynamic_reloc (abfd, dynrels, dynsyms); |
998 | if (dynrel_count < 0) | |
999 | { | |
1000 | do_cleanups (back_to); | |
1001 | return; | |
1002 | } | |
5801f348 | 1003 | |
192b64e7 | 1004 | for (counter = 0, relptr = dynrels; |
5801f348 | 1005 | counter < dynrel_count; |
192b64e7 | 1006 | counter++, relptr++) |
5801f348 | 1007 | { |
0683ac4b | 1008 | arelent *rel = *relptr; |
26a859ec PS |
1009 | CORE_ADDR address = |
1010 | rel->address + ANOFFSET (section_offsets, SECT_OFF_DATA); | |
5801f348 | 1011 | |
0683ac4b PS |
1012 | switch (bfd_get_arch (abfd)) |
1013 | { | |
1014 | case bfd_arch_sparc: | |
1015 | if (rel->howto->type != RELOC_JMP_SLOT) | |
1016 | continue; | |
1017 | break; | |
1018 | case bfd_arch_m68k: | |
1019 | /* `16' is the type BFD produces for a jump table relocation. */ | |
1020 | if (rel->howto->type != 16) | |
1021 | continue; | |
5801f348 | 1022 | |
0683ac4b PS |
1023 | /* Adjust address in the jump table to point to |
1024 | the start of the bsr instruction. */ | |
1025 | address -= 2; | |
1026 | break; | |
1027 | default: | |
1028 | continue; | |
1029 | } | |
5801f348 | 1030 | |
b9e58503 | 1031 | name = (char *) bfd_asymbol_name (*rel->sym_ptr_ptr); |
f69ecb9c JK |
1032 | prim_record_minimal_symbol |
1033 | (obsavestring (name, strlen (name), &objfile -> symbol_obstack), | |
1034 | address, | |
1035 | mst_solib_trampoline, | |
1036 | objfile); | |
5801f348 | 1037 | } |
192b64e7 ILT |
1038 | |
1039 | do_cleanups (back_to); | |
5801f348 JK |
1040 | } |
1041 | ||
bd5635a1 RP |
1042 | /* Given pointers to an a.out symbol table in core containing dbx |
1043 | style data, setup partial_symtab's describing each source file for | |
3624c875 FF |
1044 | which debugging information is available. |
1045 | SYMFILE_NAME is the name of the file we are reading from | |
2af231b8 JG |
1046 | and SECTION_OFFSETS is the set of offsets for the various sections |
1047 | of the file (a set of zeros if the mainline program). */ | |
bd5635a1 RP |
1048 | |
1049 | static void | |
2af231b8 JG |
1050 | read_dbx_symtab (section_offsets, objfile, text_addr, text_size) |
1051 | struct section_offsets *section_offsets; | |
7d9884b9 | 1052 | struct objfile *objfile; |
bd5635a1 RP |
1053 | CORE_ADDR text_addr; |
1054 | int text_size; | |
1055 | { | |
ac88ca20 | 1056 | register struct internal_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
bd5635a1 | 1057 | register char *namestring; |
bd5635a1 RP |
1058 | int nsl; |
1059 | int past_first_source_file = 0; | |
1060 | CORE_ADDR last_o_file_start = 0; | |
0eb22669 | 1061 | struct cleanup *back_to; |
7d9884b9 | 1062 | bfd *abfd; |
bd5635a1 | 1063 | |
bd5635a1 RP |
1064 | /* Current partial symtab */ |
1065 | struct partial_symtab *pst; | |
1066 | ||
1067 | /* List of current psymtab's include files */ | |
1068 | char **psymtab_include_list; | |
1069 | int includes_allocated; | |
1070 | int includes_used; | |
1071 | ||
1072 | /* Index within current psymtab dependency list */ | |
1073 | struct partial_symtab **dependency_list; | |
1074 | int dependencies_used, dependencies_allocated; | |
1075 | ||
9342ecb9 JG |
1076 | /* FIXME. We probably want to change stringtab_global rather than add this |
1077 | while processing every symbol entry. FIXME. */ | |
1078 | file_string_table_offset = 0; | |
1079 | next_file_string_table_offset = 0; | |
1080 | ||
3624c875 | 1081 | stringtab_global = DBX_STRINGTAB (objfile); |
bd5635a1 RP |
1082 | |
1083 | pst = (struct partial_symtab *) 0; | |
1084 | ||
1085 | includes_allocated = 30; | |
1086 | includes_used = 0; | |
1087 | psymtab_include_list = (char **) alloca (includes_allocated * | |
1088 | sizeof (char *)); | |
1089 | ||
1090 | dependencies_allocated = 30; | |
1091 | dependencies_used = 0; | |
1092 | dependency_list = | |
1093 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1094 | sizeof (struct partial_symtab *)); | |
1095 | ||
bd5635a1 | 1096 | /* Init bincl list */ |
021959e2 | 1097 | init_bincl_list (20, objfile); |
0eb22669 | 1098 | back_to = make_cleanup (free_bincl_list, objfile); |
bd5635a1 | 1099 | |
3416d90b | 1100 | last_source_file = NULL; |
bd5635a1 | 1101 | |
9d2b8d50 | 1102 | lowest_text_address = (CORE_ADDR)-1; |
bd5635a1 | 1103 | |
7d9884b9 JG |
1104 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ |
1105 | abfd = objfile->obfd; | |
bd5635a1 | 1106 | symbuf_end = symbuf_idx = 0; |
aab77d5f | 1107 | next_symbol_text_func = dbx_next_symbol_text; |
bd5635a1 | 1108 | |
3624c875 | 1109 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
bd5635a1 RP |
1110 | { |
1111 | /* Get the symbol for this run and pull out some info */ | |
1112 | QUIT; /* allow this to be interruptable */ | |
1113 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1114 | fill_symbuf (abfd); |
bd5635a1 RP |
1115 | bufp = &symbuf[symbuf_idx++]; |
1116 | ||
1117 | /* | |
1118 | * Special case to speed up readin. | |
1119 | */ | |
1120 | if (bufp->n_type == (unsigned char)N_SLINE) continue; | |
1121 | ||
7d9884b9 | 1122 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 RP |
1123 | |
1124 | /* Ok. There is a lot of code duplicated in the rest of this | |
1125 | switch statement (for efficiency reasons). Since I don't | |
1126 | like duplicating code, I will do my penance here, and | |
1127 | describe the code which is duplicated: | |
1128 | ||
1129 | *) The assignment to namestring. | |
1130 | *) The call to strchr. | |
1131 | *) The addition of a partial symbol the the two partial | |
1132 | symbol lists. This last is a large section of code, so | |
1133 | I've imbedded it in the following macro. | |
1134 | */ | |
1135 | ||
1136 | /* Set namestring based on bufp. If the string table index is invalid, | |
1137 | give a fake name, and print a single error message per symbol file read, | |
1138 | rather than abort the symbol reading or flood the user with messages. */ | |
9342ecb9 JG |
1139 | |
1140 | /*FIXME: Too many adds and indirections in here for the inner loop. */ | |
bd5635a1 | 1141 | #define SET_NAMESTRING()\ |
9342ecb9 JG |
1142 | if (((unsigned)bufp->n_strx + file_string_table_offset) >= \ |
1143 | DBX_STRINGTAB_SIZE (objfile)) { \ | |
51b80b00 | 1144 | complain (&string_table_offset_complaint, symnum); \ |
5801f348 | 1145 | namestring = "<bad string table offset>"; \ |
bd5635a1 | 1146 | } else \ |
9342ecb9 JG |
1147 | namestring = bufp->n_strx + file_string_table_offset + \ |
1148 | DBX_STRINGTAB (objfile) | |
bd5635a1 | 1149 | |
7e258d18 PB |
1150 | #define CUR_SYMBOL_TYPE bufp->n_type |
1151 | #define CUR_SYMBOL_VALUE bufp->n_value | |
1152 | #define DBXREAD_ONLY | |
2af231b8 JG |
1153 | #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\ |
1154 | start_psymtab(ofile, secoff, fname, low, symoff, global_syms, static_syms) | |
7e258d18 PB |
1155 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)\ |
1156 | end_psymtab(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) | |
aab77d5f | 1157 | |
7e258d18 | 1158 | #include "partial-stab.h" |
bd5635a1 RP |
1159 | } |
1160 | ||
1161 | /* If there's stuff to be cleaned up, clean it up. */ | |
3624c875 | 1162 | if (DBX_SYMCOUNT (objfile) > 0 /* We have some syms */ |
9342ecb9 JG |
1163 | /*FIXME, does this have a bug at start address 0? */ |
1164 | && last_o_file_start | |
3624c875 FF |
1165 | && objfile -> ei.entry_point < bufp->n_value |
1166 | && objfile -> ei.entry_point >= last_o_file_start) | |
bd5635a1 | 1167 | { |
3624c875 FF |
1168 | objfile -> ei.entry_file_lowpc = last_o_file_start; |
1169 | objfile -> ei.entry_file_highpc = bufp->n_value; | |
bd5635a1 RP |
1170 | } |
1171 | ||
1172 | if (pst) | |
1173 | { | |
1174 | end_psymtab (pst, psymtab_include_list, includes_used, | |
9d2b8d50 JK |
1175 | symnum * symbol_size, |
1176 | (lowest_text_address == (CORE_ADDR)-1 | |
2fe3b329 PS |
1177 | ? (text_addr + section_offsets->offsets[SECT_OFF_TEXT]) |
1178 | : lowest_text_address) | |
9d2b8d50 | 1179 | + text_size, |
7e258d18 | 1180 | dependency_list, dependencies_used); |
bd5635a1 RP |
1181 | } |
1182 | ||
0eb22669 | 1183 | do_cleanups (back_to); |
bd5635a1 RP |
1184 | } |
1185 | ||
4a35d6e9 FF |
1186 | /* Allocate and partially fill a partial symtab. It will be |
1187 | completely filled at the end of the symbol list. | |
1188 | ||
1189 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1190 | is the address relative to which its symbols are (incremental) or 0 | |
1191 | (normal). */ | |
1192 | ||
bd5635a1 | 1193 | |
7e258d18 | 1194 | struct partial_symtab * |
2af231b8 | 1195 | start_psymtab (objfile, section_offsets, |
bd5635a1 | 1196 | filename, textlow, ldsymoff, global_syms, static_syms) |
7d9884b9 | 1197 | struct objfile *objfile; |
2af231b8 | 1198 | struct section_offsets *section_offsets; |
bd5635a1 RP |
1199 | char *filename; |
1200 | CORE_ADDR textlow; | |
1201 | int ldsymoff; | |
1202 | struct partial_symbol *global_syms; | |
1203 | struct partial_symbol *static_syms; | |
1204 | { | |
1205 | struct partial_symtab *result = | |
2af231b8 | 1206 | start_psymtab_common(objfile, section_offsets, |
021959e2 | 1207 | filename, textlow, global_syms, static_syms); |
bd5635a1 | 1208 | |
021959e2 JG |
1209 | result->read_symtab_private = (char *) |
1210 | obstack_alloc (&objfile -> psymbol_obstack, sizeof (struct symloc)); | |
1211 | LDSYMOFF(result) = ldsymoff; | |
bd5635a1 | 1212 | result->read_symtab = dbx_psymtab_to_symtab; |
9342ecb9 JG |
1213 | SYMBOL_SIZE(result) = symbol_size; |
1214 | SYMBOL_OFFSET(result) = symbol_table_offset; | |
1215 | STRING_OFFSET(result) = string_table_offset; | |
1216 | FILE_STRING_OFFSET(result) = file_string_table_offset; | |
bd5635a1 | 1217 | |
2af231b8 JG |
1218 | /* If we're handling an ELF file, drag some section-relocation info |
1219 | for this source file out of the ELF symbol table, to compensate for | |
1220 | Sun brain death. This replaces the section_offsets in this psymtab, | |
1221 | if successful. */ | |
1222 | elfstab_offset_sections (objfile, result); | |
1223 | ||
2e4964ad FF |
1224 | /* Deduce the source language from the filename for this psymtab. */ |
1225 | psymtab_language = deduce_language_from_filename (filename); | |
1226 | ||
bd5635a1 RP |
1227 | return result; |
1228 | } | |
1229 | ||
cbba020f PS |
1230 | /* Close off the current usage of PST. |
1231 | Returns PST or NULL if the partial symtab was empty and thrown away. | |
bd5635a1 | 1232 | |
cbba020f | 1233 | FIXME: List variables and peculiarities of same. */ |
bd5635a1 | 1234 | |
cbba020f | 1235 | struct partial_symtab * |
bd5635a1 | 1236 | end_psymtab (pst, include_list, num_includes, capping_symbol_offset, |
7e258d18 | 1237 | capping_text, dependency_list, number_dependencies) |
bd5635a1 RP |
1238 | struct partial_symtab *pst; |
1239 | char **include_list; | |
1240 | int num_includes; | |
1241 | int capping_symbol_offset; | |
1242 | CORE_ADDR capping_text; | |
1243 | struct partial_symtab **dependency_list; | |
1244 | int number_dependencies; | |
bd5635a1 RP |
1245 | { |
1246 | int i; | |
021959e2 | 1247 | struct objfile *objfile = pst -> objfile; |
bd5635a1 | 1248 | |
7e258d18 PB |
1249 | if (capping_symbol_offset != -1) |
1250 | LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst); | |
bd5635a1 RP |
1251 | pst->texthigh = capping_text; |
1252 | ||
b9e58503 | 1253 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
9342ecb9 JG |
1254 | /* Under Solaris, the N_SO symbols always have a value of 0, |
1255 | instead of the usual address of the .o file. Therefore, | |
1256 | we have to do some tricks to fill in texthigh and textlow. | |
1257 | The first trick is in partial-stab.h: if we see a static | |
1258 | or global function, and the textlow for the current pst | |
1259 | is still 0, then we use that function's address for | |
b9e58503 | 1260 | the textlow of the pst. */ |
9342ecb9 | 1261 | |
b9e58503 | 1262 | /* Now, to fill in texthigh, we remember the last function seen |
9342ecb9 JG |
1263 | in the .o file (also in partial-stab.h). Also, there's a hack in |
1264 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field | |
1265 | to here via the misc_info field. Therefore, we can fill in | |
1266 | a reliable texthigh by taking the address plus size of the | |
b9e58503 | 1267 | last function in the file. */ |
9342ecb9 | 1268 | |
bcbf9559 | 1269 | if (pst->texthigh == 0 && last_function_name) { |
9342ecb9 JG |
1270 | char *p; |
1271 | int n; | |
1272 | struct minimal_symbol *minsym; | |
1273 | ||
1274 | p = strchr (last_function_name, ':'); | |
1275 | if (p == NULL) | |
1276 | p = last_function_name; | |
1277 | n = p - last_function_name; | |
1278 | p = alloca (n + 1); | |
1279 | strncpy (p, last_function_name, n); | |
1280 | p[n] = 0; | |
1281 | ||
b9e58503 | 1282 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
9342ecb9 | 1283 | |
b9e58503 | 1284 | if (minsym) |
2e4964ad | 1285 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + |
5573d7d4 | 1286 | (long) MSYMBOL_INFO (minsym); |
b9e58503 | 1287 | |
9342ecb9 JG |
1288 | last_function_name = NULL; |
1289 | } | |
1290 | ||
1291 | /* this test will be true if the last .o file is only data */ | |
1292 | if (pst->textlow == 0) | |
6545c6a0 JK |
1293 | /* This loses if the text section really starts at address zero |
1294 | (generally true when we are debugging a .o file, for example). | |
b9e58503 | 1295 | That is why this whole thing is inside SOFUN_ADDRESS_MAYBE_MISSING. */ |
9342ecb9 JG |
1296 | pst->textlow = pst->texthigh; |
1297 | ||
bcbf9559 JG |
1298 | /* If we know our own starting text address, then walk through all other |
1299 | psymtabs for this objfile, and if any didn't know their ending text | |
1300 | address, set it to our starting address. Take care to not set our | |
1301 | own ending address to our starting address, nor to set addresses on | |
1302 | `dependency' files that have both textlow and texthigh zero. */ | |
9342ecb9 | 1303 | if (pst->textlow) { |
bfe2f12b JL |
1304 | struct partial_symtab *p1; |
1305 | ||
9342ecb9 | 1306 | ALL_OBJFILE_PSYMTABS (objfile, p1) { |
bcbf9559 | 1307 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) { |
9342ecb9 JG |
1308 | p1->texthigh = pst->textlow; |
1309 | /* if this file has only data, then make textlow match texthigh */ | |
1310 | if (p1->textlow == 0) | |
1311 | p1->textlow = p1->texthigh; | |
1312 | } | |
1313 | } | |
1314 | } | |
1315 | ||
1316 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
b9e58503 | 1317 | #endif /* SOFUN_ADDRESS_MAYBE_MISSING. */ |
9342ecb9 | 1318 | |
bd5635a1 | 1319 | pst->n_global_syms = |
021959e2 | 1320 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); |
bd5635a1 | 1321 | pst->n_static_syms = |
021959e2 | 1322 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); |
bd5635a1 RP |
1323 | |
1324 | pst->number_of_dependencies = number_dependencies; | |
1325 | if (number_dependencies) | |
1326 | { | |
1327 | pst->dependencies = (struct partial_symtab **) | |
021959e2 | 1328 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 | 1329 | number_dependencies * sizeof (struct partial_symtab *)); |
7e258d18 | 1330 | memcpy (pst->dependencies, dependency_list, |
bd5635a1 RP |
1331 | number_dependencies * sizeof (struct partial_symtab *)); |
1332 | } | |
1333 | else | |
1334 | pst->dependencies = 0; | |
1335 | ||
1336 | for (i = 0; i < num_includes; i++) | |
1337 | { | |
bd5635a1 | 1338 | struct partial_symtab *subpst = |
021959e2 | 1339 | allocate_psymtab (include_list[i], objfile); |
7d9884b9 | 1340 | |
2af231b8 | 1341 | subpst->section_offsets = pst->section_offsets; |
021959e2 JG |
1342 | subpst->read_symtab_private = |
1343 | (char *) obstack_alloc (&objfile->psymbol_obstack, | |
1344 | sizeof (struct symloc)); | |
4a35d6e9 FF |
1345 | LDSYMOFF(subpst) = |
1346 | LDSYMLEN(subpst) = | |
bd5635a1 RP |
1347 | subpst->textlow = |
1348 | subpst->texthigh = 0; | |
1349 | ||
3f83182d JG |
1350 | /* We could save slight bits of space by only making one of these, |
1351 | shared by the entire set of include files. FIXME-someday. */ | |
bd5635a1 | 1352 | subpst->dependencies = (struct partial_symtab **) |
021959e2 | 1353 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 RP |
1354 | sizeof (struct partial_symtab *)); |
1355 | subpst->dependencies[0] = pst; | |
1356 | subpst->number_of_dependencies = 1; | |
1357 | ||
1358 | subpst->globals_offset = | |
1359 | subpst->n_global_syms = | |
1360 | subpst->statics_offset = | |
1361 | subpst->n_static_syms = 0; | |
1362 | ||
1363 | subpst->readin = 0; | |
9a822037 | 1364 | subpst->symtab = 0; |
2707b48a | 1365 | subpst->read_symtab = pst->read_symtab; |
bd5635a1 RP |
1366 | } |
1367 | ||
021959e2 | 1368 | sort_pst_symbols (pst); |
bd5635a1 | 1369 | |
f9623881 JG |
1370 | /* If there is already a psymtab or symtab for a file of this name, remove it. |
1371 | (If there is a symtab, more drastic things also happen.) | |
1372 | This happens in VxWorks. */ | |
1373 | free_named_symtabs (pst->filename); | |
1374 | ||
7d9884b9 | 1375 | if (num_includes == 0 |
5801f348 JK |
1376 | && number_dependencies == 0 |
1377 | && pst->n_global_syms == 0 | |
1378 | && pst->n_static_syms == 0) | |
1379 | { | |
1380 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
1381 | it is on the obstack, but we can forget to chain it on the list. */ | |
1382 | /* Empty psymtabs happen as a result of header files which don't have | |
1383 | any symbols in them. There can be a lot of them. But this check | |
1384 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
1385 | is not empty, but we don't realize that. Fixing that without slowing | |
1386 | things down might be tricky. */ | |
1387 | struct partial_symtab *prev_pst; | |
1388 | ||
1389 | /* First, snip it out of the psymtab chain */ | |
1390 | ||
1391 | if (pst->objfile->psymtabs == pst) | |
1392 | pst->objfile->psymtabs = pst->next; | |
1393 | else | |
1394 | for (prev_pst = pst->objfile->psymtabs; prev_pst; prev_pst = pst->next) | |
1395 | if (prev_pst->next == pst) | |
1396 | prev_pst->next = pst->next; | |
318bf84f | 1397 | |
5801f348 | 1398 | /* Next, put it on a free list for recycling */ |
318bf84f | 1399 | |
5801f348 JK |
1400 | pst->next = pst->objfile->free_psymtabs; |
1401 | pst->objfile->free_psymtabs = pst; | |
cbba020f | 1402 | |
5801f348 JK |
1403 | /* Indicate that psymtab was thrown away. */ |
1404 | pst = (struct partial_symtab *)NULL; | |
1405 | } | |
cbba020f | 1406 | return pst; |
bd5635a1 RP |
1407 | } |
1408 | \f | |
1409 | static void | |
4c07f28d | 1410 | dbx_psymtab_to_symtab_1 (pst) |
bd5635a1 | 1411 | struct partial_symtab *pst; |
bd5635a1 RP |
1412 | { |
1413 | struct cleanup *old_chain; | |
1414 | int i; | |
1415 | ||
1416 | if (!pst) | |
1417 | return; | |
1418 | ||
1419 | if (pst->readin) | |
1420 | { | |
199b2450 | 1421 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
bd5635a1 RP |
1422 | pst->filename); |
1423 | return; | |
1424 | } | |
1425 | ||
afe4ca15 | 1426 | /* Read in all partial symtabs on which this one is dependent */ |
bd5635a1 RP |
1427 | for (i = 0; i < pst->number_of_dependencies; i++) |
1428 | if (!pst->dependencies[i]->readin) | |
1429 | { | |
1430 | /* Inform about additional files that need to be read in. */ | |
1431 | if (info_verbose) | |
1432 | { | |
199b2450 | 1433 | fputs_filtered (" ", gdb_stdout); |
bd5635a1 | 1434 | wrap_here (""); |
199b2450 | 1435 | fputs_filtered ("and ", gdb_stdout); |
bd5635a1 RP |
1436 | wrap_here (""); |
1437 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
1438 | wrap_here (""); /* Flush output */ | |
199b2450 | 1439 | gdb_flush (gdb_stdout); |
bd5635a1 | 1440 | } |
4c07f28d | 1441 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); |
bd5635a1 RP |
1442 | } |
1443 | ||
4a35d6e9 | 1444 | if (LDSYMLEN(pst)) /* Otherwise it's a dummy */ |
bd5635a1 RP |
1445 | { |
1446 | /* Init stuff necessary for reading in symbols */ | |
3416d90b | 1447 | stabsread_init (); |
c0302457 | 1448 | buildsym_init (); |
bd5635a1 | 1449 | old_chain = make_cleanup (really_free_pendings, 0); |
9342ecb9 | 1450 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
4c07f28d FF |
1451 | symbol_size = SYMBOL_SIZE (pst); |
1452 | ||
1453 | /* Read in this file's symbols */ | |
2c7ab4ca | 1454 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); |
574dac8e | 1455 | read_ofile_symtab (pst); |
9404978d | 1456 | sort_symtab_syms (pst->symtab); |
bd5635a1 RP |
1457 | |
1458 | do_cleanups (old_chain); | |
1459 | } | |
1460 | ||
1461 | pst->readin = 1; | |
1462 | } | |
1463 | ||
ac88ca20 JG |
1464 | /* Read in all of the symbols for a given psymtab for real. |
1465 | Be verbose about it if the user wants that. */ | |
1466 | ||
bd5635a1 RP |
1467 | static void |
1468 | dbx_psymtab_to_symtab (pst) | |
1469 | struct partial_symtab *pst; | |
1470 | { | |
bd5635a1 | 1471 | bfd *sym_bfd; |
bd5635a1 RP |
1472 | |
1473 | if (!pst) | |
1474 | return; | |
1475 | ||
1476 | if (pst->readin) | |
1477 | { | |
199b2450 | 1478 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
bd5635a1 RP |
1479 | pst->filename); |
1480 | return; | |
1481 | } | |
1482 | ||
4a35d6e9 | 1483 | if (LDSYMLEN(pst) || pst->number_of_dependencies) |
bd5635a1 RP |
1484 | { |
1485 | /* Print the message now, before reading the string table, | |
1486 | to avoid disconcerting pauses. */ | |
1487 | if (info_verbose) | |
1488 | { | |
1489 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
199b2450 | 1490 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
1491 | } |
1492 | ||
7d9884b9 | 1493 | sym_bfd = pst->objfile->obfd; |
bd5635a1 | 1494 | |
aab77d5f PB |
1495 | next_symbol_text_func = dbx_next_symbol_text; |
1496 | ||
4c07f28d | 1497 | dbx_psymtab_to_symtab_1 (pst); |
bd5635a1 RP |
1498 | |
1499 | /* Match with global symbols. This only needs to be done once, | |
1500 | after all of the symtabs and dependencies have been read in. */ | |
021959e2 | 1501 | scan_file_globals (pst->objfile); |
bd5635a1 | 1502 | |
bd5635a1 RP |
1503 | /* Finish up the debug error message. */ |
1504 | if (info_verbose) | |
1505 | printf_filtered ("done.\n"); | |
1506 | } | |
1507 | } | |
1508 | ||
574dac8e | 1509 | /* Read in a defined section of a specific object file's symbols. */ |
9342ecb9 | 1510 | |
574dac8e JK |
1511 | static void |
1512 | read_ofile_symtab (pst) | |
1513 | struct partial_symtab *pst; | |
bd5635a1 RP |
1514 | { |
1515 | register char *namestring; | |
7d9884b9 | 1516 | register struct internal_nlist *bufp; |
bd5635a1 | 1517 | unsigned char type; |
afe4ca15 | 1518 | unsigned max_symnum; |
7d9884b9 | 1519 | register bfd *abfd; |
574dac8e JK |
1520 | struct objfile *objfile; |
1521 | int sym_offset; /* Offset to start of symbols to read */ | |
1522 | int sym_size; /* Size of symbols to read */ | |
1523 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
1524 | int text_size; /* Size of text segment for symbols */ | |
1525 | struct section_offsets *section_offsets; | |
1526 | ||
1527 | objfile = pst->objfile; | |
1528 | sym_offset = LDSYMOFF(pst); | |
1529 | sym_size = LDSYMLEN(pst); | |
1530 | text_offset = pst->textlow; | |
1531 | text_size = pst->texthigh - pst->textlow; | |
1532 | section_offsets = pst->section_offsets; | |
7d9884b9 | 1533 | |
021959e2 | 1534 | current_objfile = objfile; |
3416d90b | 1535 | subfile_stack = NULL; |
bd5635a1 | 1536 | |
3624c875 | 1537 | stringtab_global = DBX_STRINGTAB (objfile); |
3416d90b | 1538 | last_source_file = NULL; |
bd5635a1 | 1539 | |
7d9884b9 JG |
1540 | abfd = objfile->obfd; |
1541 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ | |
bd5635a1 RP |
1542 | symbuf_end = symbuf_idx = 0; |
1543 | ||
1544 | /* It is necessary to actually read one symbol *before* the start | |
1545 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
1546 | occurs before the N_SO symbol. | |
1547 | ||
1548 | Detecting this in read_dbx_symtab | |
1549 | would slow down initial readin, so we look for it here instead. */ | |
9342ecb9 | 1550 | if (!processing_acc_compilation && sym_offset >= (int)symbol_size) |
bd5635a1 | 1551 | { |
2c7ab4ca | 1552 | bfd_seek (symfile_bfd, sym_offset - symbol_size, SEEK_CUR); |
7d9884b9 | 1553 | fill_symbuf (abfd); |
bd5635a1 | 1554 | bufp = &symbuf[symbuf_idx++]; |
7d9884b9 | 1555 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 | 1556 | |
afe4ca15 | 1557 | SET_NAMESTRING (); |
bd5635a1 | 1558 | |
1aed6766 SG |
1559 | processing_gcc_compilation = 0; |
1560 | if (bufp->n_type == N_TEXT) | |
1561 | { | |
db2302cb PS |
1562 | const char *tempstring = namestring; |
1563 | ||
2e4964ad | 1564 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1565 | processing_gcc_compilation = 1; |
2e4964ad | 1566 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1567 | processing_gcc_compilation = 2; |
db2302cb PS |
1568 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) |
1569 | ++tempstring; | |
1570 | if (STREQN (tempstring, "__gnu_compiled", 14)) | |
1571 | processing_gcc_compilation = 2; | |
1aed6766 | 1572 | } |
3416d90b FF |
1573 | |
1574 | /* Try to select a C++ demangling based on the compilation unit | |
1575 | producer. */ | |
1576 | ||
1577 | if (processing_gcc_compilation) | |
1578 | { | |
1aed6766 | 1579 | if (AUTO_DEMANGLING) |
3416d90b FF |
1580 | { |
1581 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1582 | } | |
3416d90b | 1583 | } |
bd5635a1 RP |
1584 | } |
1585 | else | |
1586 | { | |
1587 | /* The N_SO starting this symtab is the first symbol, so we | |
1588 | better not check the symbol before it. I'm not this can | |
1589 | happen, but it doesn't hurt to check for it. */ | |
2c7ab4ca | 1590 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); |
bd5635a1 RP |
1591 | processing_gcc_compilation = 0; |
1592 | } | |
1593 | ||
1594 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1595 | fill_symbuf (abfd); |
bd5635a1 RP |
1596 | bufp = &symbuf[symbuf_idx]; |
1597 | if (bufp->n_type != (unsigned char)N_SO) | |
1598 | error("First symbol in segment of executable not a source symbol"); | |
1599 | ||
afe4ca15 JG |
1600 | max_symnum = sym_size / symbol_size; |
1601 | ||
bd5635a1 | 1602 | for (symnum = 0; |
afe4ca15 | 1603 | symnum < max_symnum; |
bd5635a1 RP |
1604 | symnum++) |
1605 | { | |
1606 | QUIT; /* Allow this to be interruptable */ | |
1607 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1608 | fill_symbuf(abfd); |
bd5635a1 | 1609 | bufp = &symbuf[symbuf_idx++]; |
7d9884b9 | 1610 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 | 1611 | |
c0302457 | 1612 | type = bufp->n_type; |
bd5635a1 | 1613 | |
afe4ca15 | 1614 | SET_NAMESTRING (); |
bd5635a1 | 1615 | |
7d9884b9 | 1616 | if (type & N_STAB) { |
c55e6167 | 1617 | process_one_symbol (type, bufp->n_desc, bufp->n_value, |
2af231b8 | 1618 | namestring, section_offsets, objfile); |
7d9884b9 | 1619 | } |
bd5635a1 RP |
1620 | /* We skip checking for a new .o or -l file; that should never |
1621 | happen in this routine. */ | |
1aed6766 | 1622 | else if (type == N_TEXT) |
3416d90b FF |
1623 | { |
1624 | /* I don't think this code will ever be executed, because | |
1625 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
1626 | the N_SO symbol which starts this source file. | |
1627 | However, there is no reason not to accept | |
1628 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
1aed6766 | 1629 | |
2e4964ad | 1630 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1631 | processing_gcc_compilation = 1; |
2e4964ad | 1632 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 SG |
1633 | processing_gcc_compilation = 2; |
1634 | ||
1aed6766 | 1635 | if (AUTO_DEMANGLING) |
3416d90b FF |
1636 | { |
1637 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1638 | } | |
3416d90b | 1639 | } |
bd5635a1 RP |
1640 | else if (type & N_EXT || type == (unsigned char)N_TEXT |
1641 | || type == (unsigned char)N_NBTEXT | |
0c4d2cc2 | 1642 | ) { |
bd5635a1 RP |
1643 | /* Global symbol: see if we came across a dbx defintion for |
1644 | a corresponding symbol. If so, store the value. Remove | |
1645 | syms from the chain when their values are stored, but | |
1646 | search the whole chain, as there may be several syms from | |
1647 | different files with the same name. */ | |
1648 | /* This is probably not true. Since the files will be read | |
1649 | in one at a time, each reference to a global symbol will | |
1650 | be satisfied in each file as it appears. So we skip this | |
1651 | section. */ | |
1652 | ; | |
0c4d2cc2 | 1653 | } |
bd5635a1 | 1654 | } |
9404978d | 1655 | |
021959e2 | 1656 | current_objfile = NULL; |
9342ecb9 JG |
1657 | |
1658 | /* In a Solaris elf file, this variable, which comes from the | |
1659 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
1660 | which comes from pst->textlow is correct. */ | |
1661 | if (last_source_start_addr == 0) | |
1662 | last_source_start_addr = text_offset; | |
1663 | ||
574dac8e JK |
1664 | pst->symtab = end_symtab (text_offset + text_size, 0, 0, objfile, |
1665 | SECT_OFF_TEXT); | |
3416d90b | 1666 | end_stabs (); |
bd5635a1 | 1667 | } |
574dac8e | 1668 | |
bd5635a1 | 1669 | \f |
c55e6167 JG |
1670 | /* This handles a single symbol from the symbol-file, building symbols |
1671 | into a GDB symtab. It takes these arguments and an implicit argument. | |
1672 | ||
1673 | TYPE is the type field of the ".stab" symbol entry. | |
1674 | DESC is the desc field of the ".stab" entry. | |
1675 | VALU is the value field of the ".stab" entry. | |
1676 | NAME is the symbol name, in our address space. | |
2af231b8 JG |
1677 | SECTION_OFFSETS is a set of amounts by which the sections of this object |
1678 | file were relocated when it was loaded into memory. | |
1679 | All symbols that refer | |
1680 | to memory locations need to be offset by these amounts. | |
9342ecb9 | 1681 | OBJFILE is the object file from which we are reading symbols. |
c55e6167 JG |
1682 | It is used in end_symtab. */ |
1683 | ||
7e258d18 | 1684 | void |
2af231b8 | 1685 | process_one_symbol (type, desc, valu, name, section_offsets, objfile) |
bd5635a1 RP |
1686 | int type, desc; |
1687 | CORE_ADDR valu; | |
1688 | char *name; | |
2af231b8 | 1689 | struct section_offsets *section_offsets; |
9342ecb9 | 1690 | struct objfile *objfile; |
bd5635a1 | 1691 | { |
a5e6391b JK |
1692 | #ifdef SUN_FIXED_LBRAC_BUG |
1693 | /* If SUN_FIXED_LBRAC_BUG is defined, then it tells us whether we need | |
1694 | to correct the address of N_LBRAC's. If it is not defined, then | |
1695 | we never need to correct the addresses. */ | |
1696 | ||
0cf9329b | 1697 | /* This records the last pc address we've seen. We depend on there being |
bd5635a1 RP |
1698 | an SLINE or FUN or SO before the first LBRAC, since the variable does |
1699 | not get reset in between reads of different symbol files. */ | |
1700 | static CORE_ADDR last_pc_address; | |
a5e6391b | 1701 | #endif |
8357834f | 1702 | |
bd5635a1 | 1703 | register struct context_stack *new; |
9342ecb9 JG |
1704 | /* This remembers the address of the start of a function. It is used |
1705 | because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries are | |
1706 | relative to the current function's start address. On systems | |
2af231b8 JG |
1707 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, and is |
1708 | used to relocate these symbol types rather than SECTION_OFFSETS. */ | |
9342ecb9 | 1709 | static CORE_ADDR function_start_offset; |
bd5635a1 | 1710 | |
8357834f | 1711 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this source |
b8ec9a79 | 1712 | file. Used to detect the SunPRO solaris compiler. */ |
4d57c599 | 1713 | static int n_opt_found; |
8357834f | 1714 | |
b8ec9a79 JK |
1715 | /* The stab type used for the definition of the last function. |
1716 | N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */ | |
1717 | static int function_stab_type = 0; | |
1718 | ||
574dac8e JK |
1719 | if (!block_address_function_relative) |
1720 | /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the | |
1721 | function start address, so just use the text offset. */ | |
1722 | function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
51b80b00 | 1723 | |
bd5635a1 RP |
1724 | /* Something is wrong if we see real data before |
1725 | seeing a source file name. */ | |
1726 | ||
3416d90b | 1727 | if (last_source_file == NULL && type != (unsigned char)N_SO) |
bd5635a1 | 1728 | { |
a5e6391b JK |
1729 | /* Ignore any symbols which appear before an N_SO symbol. Currently |
1730 | no one puts symbols there, but we should deal gracefully with the | |
1731 | case. A complain()t might be in order (if !IGNORE_SYMBOL (type)), | |
1732 | but this should not be an error (). */ | |
1733 | return; | |
bd5635a1 RP |
1734 | } |
1735 | ||
1736 | switch (type) | |
1737 | { | |
1738 | case N_FUN: | |
1739 | case N_FNAME: | |
2af231b8 JG |
1740 | /* Relocate for dynamic loading */ |
1741 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
b8ec9a79 | 1742 | goto define_a_symbol; |
bd5635a1 | 1743 | |
bd5635a1 RP |
1744 | case N_LBRAC: |
1745 | /* This "symbol" just indicates the start of an inner lexical | |
1746 | context within a function. */ | |
1747 | ||
b9e58503 PS |
1748 | /* Ignore extra outermost context from SunPRO cc and acc. */ |
1749 | if (n_opt_found && desc == 1) | |
1750 | break; | |
1751 | ||
574dac8e JK |
1752 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1753 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1754 | valu += function_start_offset; |
c55e6167 | 1755 | #else |
574dac8e JK |
1756 | if (block_address_function_relative) |
1757 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1758 | valu += function_start_offset; | |
1759 | else | |
1760 | /* On most machines, the block addresses are relative to the | |
1761 | N_SO, the linker did not relocate them (sigh). */ | |
1762 | valu += last_source_start_addr; | |
bd5635a1 RP |
1763 | #endif |
1764 | ||
a5e6391b | 1765 | #ifdef SUN_FIXED_LBRAC_BUG |
8357834f | 1766 | if (!SUN_FIXED_LBRAC_BUG && valu < last_pc_address) { |
bd5635a1 | 1767 | /* Patch current LBRAC pc value to match last handy pc value */ |
51b80b00 | 1768 | complain (&lbrac_complaint); |
bd5635a1 RP |
1769 | valu = last_pc_address; |
1770 | } | |
a5e6391b | 1771 | #endif |
7d9884b9 | 1772 | new = push_context (desc, valu); |
bd5635a1 RP |
1773 | break; |
1774 | ||
1775 | case N_RBRAC: | |
1776 | /* This "symbol" just indicates the end of an inner lexical | |
1777 | context that was started with N_LBRAC. */ | |
1778 | ||
b9e58503 PS |
1779 | /* Ignore extra outermost context from SunPRO cc and acc. */ |
1780 | if (n_opt_found && desc == 1) | |
1781 | break; | |
1782 | ||
574dac8e JK |
1783 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1784 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1785 | valu += function_start_offset; |
c55e6167 | 1786 | #else |
574dac8e JK |
1787 | if (block_address_function_relative) |
1788 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1789 | valu += function_start_offset; | |
1790 | else | |
1791 | /* On most machines, the block addresses are relative to the | |
1792 | N_SO, the linker did not relocate them (sigh). */ | |
1793 | valu += last_source_start_addr; | |
bd5635a1 RP |
1794 | #endif |
1795 | ||
7d9884b9 | 1796 | new = pop_context(); |
bd5635a1 | 1797 | if (desc != new->depth) |
51b80b00 | 1798 | complain (&lbrac_mismatch_complaint, symnum); |
bd5635a1 RP |
1799 | |
1800 | /* Some compilers put the variable decls inside of an | |
1801 | LBRAC/RBRAC block. This macro should be nonzero if this | |
1802 | is true. DESC is N_DESC from the N_RBRAC symbol. | |
0cf9329b PB |
1803 | GCC_P is true if we've detected the GCC_COMPILED_SYMBOL |
1804 | or the GCC2_COMPILED_SYMBOL. */ | |
bd5635a1 RP |
1805 | #if !defined (VARIABLES_INSIDE_BLOCK) |
1806 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 0 | |
1807 | #endif | |
1808 | ||
1809 | /* Can only use new->locals as local symbols here if we're in | |
1810 | gcc or on a machine that puts them before the lbrack. */ | |
1811 | if (!VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
1812 | local_symbols = new->locals; | |
1813 | ||
2f8c3639 JL |
1814 | if (context_stack_depth |
1815 | > !VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
bd5635a1 | 1816 | { |
2f8c3639 JL |
1817 | /* This is not the outermost LBRAC...RBRAC pair in the function, |
1818 | its local symbols preceded it, and are the ones just recovered | |
1819 | from the context stack. Define the block for them (but don't | |
1820 | bother if the block contains no symbols. Should we complain | |
1821 | on blocks without symbols? I can't think of any useful purpose | |
1822 | for them). */ | |
1823 | if (local_symbols != NULL) | |
bd5635a1 | 1824 | { |
2f8c3639 JL |
1825 | /* Muzzle a compiler bug that makes end < start. (which |
1826 | compilers? Is this ever harmful?). */ | |
1827 | if (new->start_addr > valu) | |
1828 | { | |
1829 | complain (&lbrac_rbrac_complaint); | |
1830 | new->start_addr = valu; | |
1831 | } | |
1832 | /* Make a block for the local symbols within. */ | |
1833 | finish_block (0, &local_symbols, new->old_blocks, | |
1834 | new->start_addr, valu, objfile); | |
bd5635a1 | 1835 | } |
bd5635a1 RP |
1836 | } |
1837 | else | |
1838 | { | |
2f8c3639 JL |
1839 | /* This is the outermost LBRAC...RBRAC pair. There is no |
1840 | need to do anything; leave the symbols that preceded it | |
1841 | to be attached to the function's own block. We need to | |
1842 | indicate that we just moved outside of the function. */ | |
bd5635a1 RP |
1843 | within_function = 0; |
1844 | } | |
2f8c3639 | 1845 | |
bd5635a1 RP |
1846 | if (VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) |
1847 | /* Now pop locals of block just finished. */ | |
1848 | local_symbols = new->locals; | |
1849 | break; | |
1850 | ||
9bb30452 | 1851 | case N_FN: |
6150cc73 | 1852 | case N_FN_SEQ: |
9bb30452 | 1853 | /* This kind of symbol indicates the start of an object file. */ |
2af231b8 JG |
1854 | /* Relocate for dynamic loading */ |
1855 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
bd5635a1 RP |
1856 | break; |
1857 | ||
1858 | case N_SO: | |
1859 | /* This type of symbol indicates the start of data | |
1860 | for one source file. | |
1861 | Finish the symbol table of the previous source file | |
1862 | (if any) and start accumulating a new symbol table. */ | |
2af231b8 JG |
1863 | /* Relocate for dynamic loading */ |
1864 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c55e6167 | 1865 | |
8357834f JK |
1866 | n_opt_found = 0; |
1867 | ||
a5e6391b | 1868 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 1869 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 1870 | #endif |
8357834f | 1871 | |
bd5635a1 RP |
1872 | #ifdef PCC_SOL_BROKEN |
1873 | /* pcc bug, occasionally puts out SO for SOL. */ | |
1874 | if (context_stack_depth > 0) | |
1875 | { | |
1876 | start_subfile (name, NULL); | |
1877 | break; | |
1878 | } | |
1879 | #endif | |
1880 | if (last_source_file) | |
7e258d18 PB |
1881 | { |
1882 | /* Check if previous symbol was also an N_SO (with some | |
1883 | sanity checks). If so, that one was actually the directory | |
1884 | name, and the current one is the real file name. | |
1885 | Patch things up. */ | |
6985bc54 | 1886 | if (previous_stab_code == (unsigned char) N_SO) |
7e258d18 | 1887 | { |
3416d90b | 1888 | patch_subfile_names (current_subfile, name); |
c72af089 | 1889 | break; /* Ignore repeated SOs */ |
7e258d18 | 1890 | } |
65ce5df4 | 1891 | end_symtab (valu, 0, 0, objfile, SECT_OFF_TEXT); |
3416d90b | 1892 | end_stabs (); |
7e258d18 | 1893 | } |
320f93f7 SG |
1894 | |
1895 | /* Null name means this just marks the end of text for this .o file. | |
1896 | Don't start a new symtab in this case. */ | |
1897 | if (*name == '\000') | |
1898 | break; | |
1899 | ||
3416d90b | 1900 | start_stabs (); |
bd5635a1 RP |
1901 | start_symtab (name, NULL, valu); |
1902 | break; | |
1903 | ||
1904 | case N_SOL: | |
1905 | /* This type of symbol indicates the start of data for | |
1906 | a sub-source-file, one whose contents were copied or | |
1907 | included in the compilation of the main source file | |
1908 | (whose name was given in the N_SO symbol.) */ | |
2af231b8 JG |
1909 | /* Relocate for dynamic loading */ |
1910 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
784fd92b | 1911 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
1912 | break; |
1913 | ||
1914 | case N_BINCL: | |
1915 | push_subfile (); | |
1916 | add_new_header_file (name, valu); | |
784fd92b | 1917 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
1918 | break; |
1919 | ||
1920 | case N_EINCL: | |
784fd92b | 1921 | start_subfile (pop_subfile (), current_subfile->dirname); |
bd5635a1 RP |
1922 | break; |
1923 | ||
1924 | case N_EXCL: | |
1925 | add_old_header_file (name, valu); | |
1926 | break; | |
1927 | ||
1928 | case N_SLINE: | |
1929 | /* This type of "symbol" really just records | |
1930 | one line-number -- core-address correspondence. | |
1931 | Enter it in the line list for this symbol table. */ | |
9342ecb9 JG |
1932 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
1933 | valu += function_start_offset; | |
a5e6391b | 1934 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 1935 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 1936 | #endif |
4137c5fc | 1937 | record_line (current_subfile, desc, valu); |
bd5635a1 RP |
1938 | break; |
1939 | ||
1940 | case N_BCOMM: | |
4d57c599 | 1941 | common_block_start (name, objfile); |
bd5635a1 RP |
1942 | break; |
1943 | ||
1944 | case N_ECOMM: | |
4d57c599 JK |
1945 | common_block_end (objfile); |
1946 | break; | |
bd5635a1 | 1947 | |
2af231b8 JG |
1948 | /* The following symbol types need to have the appropriate offset added |
1949 | to their value; then we process symbol definitions in the name. */ | |
1950 | ||
1951 | case N_STSYM: /* Static symbol in data seg */ | |
1952 | case N_LCSYM: /* Static symbol in BSS seg */ | |
1953 | case N_ROSYM: /* Static symbol in Read-only data seg */ | |
4d57c599 JK |
1954 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
1955 | Solaris2's stabs-in-elf makes *most* symbols relative | |
1956 | but leaves a few absolute (at least for Solaris 2.1 and version | |
1957 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on the fence. | |
2af231b8 JG |
1958 | .stab "foo:S...",N_STSYM is absolute (ld relocates it) |
1959 | .stab "foo:V...",N_STSYM is relative (section base subtracted). | |
1960 | This leaves us no choice but to search for the 'S' or 'V'... | |
1961 | (or pass the whole section_offsets stuff down ONE MORE function | |
4d57c599 | 1962 | call level, which we really don't want to do). */ |
2af231b8 JG |
1963 | { |
1964 | char *p; | |
a66e8382 SG |
1965 | |
1966 | /* .o files and NLMs have non-zero text seg offsets, but don't need | |
1967 | their static syms offset in this fashion. XXX - This is really a | |
1968 | crock that should be fixed in the solib handling code so that I | |
1969 | don't have to work around it here. */ | |
1970 | ||
1971 | if (!symfile_relocatable) | |
2af231b8 | 1972 | { |
a66e8382 SG |
1973 | p = strchr (name, ':'); |
1974 | if (p != 0 && p[1] == 'S') | |
1975 | { | |
1976 | /* The linker relocated it. We don't want to add an | |
1977 | elfstab_offset_sections-type offset, but we *do* want | |
1978 | to add whatever solib.c passed to symbol_file_add as | |
1979 | addr (this is known to affect SunOS4, and I suspect ELF | |
1980 | too). Since elfstab_offset_sections currently does not | |
1981 | muck with the text offset (there is no Ttext.text | |
1982 | symbol), we can get addr from the text offset. If | |
1983 | elfstab_offset_sections ever starts dealing with the | |
1984 | text offset, and we still need to do this, we need to | |
1985 | invent a SECT_OFF_ADDR_KLUDGE or something. */ | |
1986 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1987 | goto define_a_symbol; | |
1988 | } | |
2af231b8 JG |
1989 | } |
1990 | /* Since it's not the kludge case, re-dispatch to the right handler. */ | |
1991 | switch (type) { | |
1992 | case N_STSYM: goto case_N_STSYM; | |
1993 | case N_LCSYM: goto case_N_LCSYM; | |
1994 | case N_ROSYM: goto case_N_ROSYM; | |
1995 | default: abort(); | |
1996 | } | |
1997 | } | |
1998 | ||
1999 | case_N_STSYM: /* Static symbol in data seg */ | |
c55e6167 | 2000 | case N_DSLINE: /* Source line number, data seg */ |
2af231b8 JG |
2001 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA); |
2002 | goto define_a_symbol; | |
2003 | ||
2004 | case_N_LCSYM: /* Static symbol in BSS seg */ | |
c55e6167 JG |
2005 | case N_BSLINE: /* Source line number, bss seg */ |
2006 | /* N_BROWS: overlaps with N_BSLINE */ | |
2af231b8 JG |
2007 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS); |
2008 | goto define_a_symbol; | |
2009 | ||
2010 | case_N_ROSYM: /* Static symbol in Read-only data seg */ | |
2011 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA); | |
2012 | goto define_a_symbol; | |
2013 | ||
c55e6167 | 2014 | case N_ENTRY: /* Alternate entry point */ |
2af231b8 JG |
2015 | /* Relocate for dynamic loading */ |
2016 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2017 | goto define_a_symbol; | |
c55e6167 | 2018 | |
4f470205 JK |
2019 | /* The following symbol types we don't know how to process. Handle |
2020 | them in a "default" way, but complain to people who care. */ | |
2021 | default: | |
2022 | case N_CATCH: /* Exception handler catcher */ | |
2023 | case N_EHDECL: /* Exception handler name */ | |
2024 | case N_PC: /* Global symbol in Pascal */ | |
2025 | case N_M2C: /* Modula-2 compilation unit */ | |
2026 | /* N_MOD2: overlaps with N_EHDECL */ | |
2027 | case N_SCOPE: /* Modula-2 scope information */ | |
2028 | case N_ECOML: /* End common (local name) */ | |
2029 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
2030 | case N_NBDATA: | |
2031 | case N_NBBSS: | |
2032 | case N_NBSTS: | |
2033 | case N_NBLCS: | |
9d2b8d50 | 2034 | complain (&unknown_symtype_complaint, local_hex_string (type)); |
4f470205 JK |
2035 | /* FALLTHROUGH */ |
2036 | ||
c55e6167 JG |
2037 | /* The following symbol types don't need the address field relocated, |
2038 | since it is either unused, or is absolute. */ | |
2af231b8 | 2039 | define_a_symbol: |
c55e6167 JG |
2040 | case N_GSYM: /* Global variable */ |
2041 | case N_NSYMS: /* Number of symbols (ultrix) */ | |
2042 | case N_NOMAP: /* No map? (ultrix) */ | |
2043 | case N_RSYM: /* Register variable */ | |
2044 | case N_DEFD: /* Modula-2 GNU module dependency */ | |
2045 | case N_SSYM: /* Struct or union element */ | |
2046 | case N_LSYM: /* Local symbol in stack */ | |
2047 | case N_PSYM: /* Parameter variable */ | |
2048 | case N_LENG: /* Length of preceding symbol type */ | |
2049 | if (name) | |
4f470205 | 2050 | { |
b8ec9a79 JK |
2051 | int deftype; |
2052 | char *colon_pos = strchr (name, ':'); | |
2053 | if (colon_pos == NULL) | |
2054 | deftype = '\0'; | |
2055 | else | |
2056 | deftype = colon_pos[1]; | |
2057 | ||
2058 | switch (deftype) | |
4f470205 | 2059 | { |
b8ec9a79 JK |
2060 | case 'f': |
2061 | case 'F': | |
2062 | function_stab_type = type; | |
2063 | ||
b9e58503 PS |
2064 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
2065 | /* Deal with the SunPRO 3.0 compiler which omits the address | |
2066 | from N_FUN symbols. */ | |
989d9cba JK |
2067 | if (type == N_FUN |
2068 | && valu == ANOFFSET (section_offsets, SECT_OFF_TEXT)) | |
b9e58503 PS |
2069 | { |
2070 | struct minimal_symbol *msym; | |
2071 | char *p; | |
2072 | int n; | |
2073 | ||
2074 | p = strchr (name, ':'); | |
2075 | if (p == NULL) | |
2076 | p = name; | |
2077 | n = p - name; | |
2078 | p = alloca (n + 1); | |
2079 | strncpy (p, name, n); | |
2080 | p[n] = 0; | |
2081 | ||
2082 | msym = lookup_minimal_symbol (p, last_source_file, | |
2083 | objfile); | |
2084 | if (msym) | |
2085 | valu = SYMBOL_VALUE_ADDRESS (msym); | |
2086 | } | |
2087 | #endif | |
2088 | ||
3ef0fc8c | 2089 | #ifdef SUN_FIXED_LBRAC_BUG |
b8ec9a79 JK |
2090 | /* The Sun acc compiler, under SunOS4, puts out |
2091 | functions with N_GSYM or N_STSYM. The problem is | |
2092 | that the address of the symbol is no good (for N_GSYM | |
2093 | it doesn't even attept an address; for N_STSYM it | |
2094 | puts out an address but then it gets relocated | |
2095 | relative to the data segment, not the text segment). | |
2096 | Currently we can't fix this up later as we do for | |
2097 | some types of symbol in scan_file_globals. | |
2098 | Fortunately we do have a way of finding the address - | |
2099 | we know that the value in last_pc_address is either | |
2100 | the one we want (if we're dealing with the first | |
2101 | function in an object file), or somewhere in the | |
2102 | previous function. This means that we can use the | |
2103 | minimal symbol table to get the address. */ | |
2104 | ||
b9e58503 PS |
2105 | /* Starting with release 3.0, the Sun acc compiler, |
2106 | under SunOS4, puts out functions with N_FUN and a value | |
2107 | of zero. This gets relocated to the start of the text | |
2108 | segment of the module, which is no good either. | |
2109 | Under SunOS4 we can deal with this as N_SLINE and N_SO | |
2110 | entries contain valid absolute addresses. | |
2111 | Release 3.0 acc also puts out N_OPT entries, which makes | |
2112 | it possible to discern acc from cc or gcc. */ | |
2113 | ||
2114 | if (type == N_GSYM || type == N_STSYM | |
2115 | || (type == N_FUN | |
2116 | && n_opt_found && !block_address_function_relative)) | |
b8ec9a79 JK |
2117 | { |
2118 | struct minimal_symbol *m; | |
2119 | int l = colon_pos - name; | |
2120 | ||
2121 | m = lookup_minimal_symbol_by_pc (last_pc_address); | |
2122 | if (m && STREQN (SYMBOL_NAME (m), name, l)) | |
2123 | /* last_pc_address was in this function */ | |
2124 | valu = SYMBOL_VALUE (m); | |
3c7d3064 JK |
2125 | else if (m && STREQN (SYMBOL_NAME (m+1), name, l)) |
2126 | /* last_pc_address was in last function */ | |
2127 | valu = SYMBOL_VALUE (m+1); | |
b8ec9a79 | 2128 | else |
3c7d3064 JK |
2129 | /* Not found - use last_pc_address (for finish_block) */ |
2130 | valu = last_pc_address; | |
b8ec9a79 JK |
2131 | } |
2132 | ||
b8ec9a79 JK |
2133 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
2134 | #endif | |
2135 | ||
2136 | if (block_address_function_relative) | |
2137 | /* For Solaris 2.0 compilers, the block addresses and | |
2138 | N_SLINE's are relative to the start of the | |
2139 | function. On normal systems, and when using gcc on | |
2140 | Solaris 2.0, these addresses are just absolute, or | |
2141 | relative to the N_SO, depending on | |
2142 | BLOCK_ADDRESS_ABSOLUTE. */ | |
2143 | function_start_offset = valu; | |
2144 | ||
2145 | within_function = 1; | |
2146 | if (context_stack_depth > 0) | |
2147 | { | |
2148 | new = pop_context (); | |
2149 | /* Make a block for the local symbols within. */ | |
2150 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2151 | new->start_addr, valu, objfile); | |
2152 | } | |
2153 | /* Stack must be empty now. */ | |
2154 | if (context_stack_depth != 0) | |
2155 | complain (&lbrac_unmatched_complaint, symnum); | |
2156 | ||
2157 | new = push_context (0, valu); | |
2158 | new->name = define_symbol (valu, name, desc, type, objfile); | |
2159 | break; | |
2160 | ||
2161 | default: | |
2162 | define_symbol (valu, name, desc, type, objfile); | |
2163 | break; | |
4f470205 JK |
2164 | } |
2165 | } | |
bd5635a1 RP |
2166 | break; |
2167 | ||
ec8ceca3 JG |
2168 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
2169 | for a bunch of other flags, too. Someday we may parse their | |
2170 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
2171 | case N_OPT: /* Solaris 2: Compiler options */ | |
2172 | if (name) | |
2173 | { | |
2e4964ad | 2174 | if (STREQ (name, GCC2_COMPILED_FLAG_SYMBOL)) |
3416d90b | 2175 | { |
1aed6766 | 2176 | processing_gcc_compilation = 2; |
3416d90b | 2177 | #if 1 /* Works, but is experimental. -fnf */ |
1aed6766 | 2178 | if (AUTO_DEMANGLING) |
3416d90b FF |
2179 | { |
2180 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
2181 | } | |
2182 | #endif | |
2183 | } | |
8357834f JK |
2184 | else |
2185 | n_opt_found = 1; | |
ec8ceca3 JG |
2186 | } |
2187 | break; | |
2188 | ||
bcbf9559 JG |
2189 | /* The following symbol types can be ignored. */ |
2190 | case N_OBJ: /* Solaris 2: Object file dir and name */ | |
bcbf9559 JG |
2191 | /* N_UNDF: Solaris 2: file separator mark */ |
2192 | /* N_UNDF: -- we will never encounter it, since we only process one | |
2193 | file's symbols at once. */ | |
4c7c6bab JG |
2194 | case N_ENDM: /* Solaris 2: End of module */ |
2195 | case N_MAIN: /* Name of main routine. */ | |
9342ecb9 | 2196 | break; |
bd5635a1 | 2197 | } |
7e258d18 PB |
2198 | |
2199 | previous_stab_code = type; | |
bd5635a1 RP |
2200 | } |
2201 | \f | |
965a5c32 SS |
2202 | /* FIXME: The only difference between this and elfstab_build_psymtabs is |
2203 | the call to install_minimal_symbols for elf. If the differences are | |
2204 | really that small, the code should be shared. */ | |
2205 | ||
b5b186a2 SS |
2206 | /* Scan and build partial symbols for an coff symbol file. |
2207 | The coff file has already been processed to get its minimal symbols. | |
2208 | ||
2209 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2210 | rolled into one. | |
2211 | ||
2212 | OBJFILE is the object file we are reading symbols from. | |
2213 | ADDR is the address relative to which the symbols are (e.g. | |
2214 | the base address of the text segment). | |
2215 | MAINLINE is true if we are reading the main symbol | |
2216 | table (as opposed to a shared lib or dynamically loaded file). | |
2217 | STABOFFSET and STABSIZE define the location in OBJFILE where the .stab | |
2218 | section exists. | |
2219 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
2220 | .stabstr section exists. | |
2221 | ||
2222 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
2223 | adjusted for coff details. */ | |
2224 | ||
2225 | void | |
2226 | coffstab_build_psymtabs (objfile, section_offsets, mainline, | |
2227 | staboffset, stabsize, | |
2228 | stabstroffset, stabstrsize) | |
2229 | struct objfile *objfile; | |
2230 | struct section_offsets *section_offsets; | |
2231 | int mainline; | |
2232 | file_ptr staboffset; | |
2233 | unsigned int stabsize; | |
2234 | file_ptr stabstroffset; | |
2235 | unsigned int stabstrsize; | |
2236 | { | |
2237 | int val; | |
2238 | bfd *sym_bfd = objfile->obfd; | |
2239 | char *name = bfd_get_filename (sym_bfd); | |
2240 | struct dbx_symfile_info *info; | |
2241 | ||
2242 | /* There is already a dbx_symfile_info allocated by our caller. | |
2243 | It might even contain some info from the coff symtab to help us. */ | |
965a5c32 | 2244 | info = (struct dbx_symfile_info *) objfile->sym_stab_info; |
b5b186a2 SS |
2245 | |
2246 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
2247 | if (!DBX_TEXT_SECT (objfile)) | |
2248 | error ("Can't find .text section in symbol file"); | |
2249 | ||
2250 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
2251 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; | |
2252 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
2253 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; | |
2254 | DBX_SYMTAB_OFFSET (objfile) = staboffset; | |
2255 | ||
2256 | if (stabstrsize > bfd_get_size (sym_bfd)) | |
2257 | error ("ridiculous string table size: %d bytes", stabstrsize); | |
2258 | DBX_STRINGTAB (objfile) = (char *) | |
2259 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
2260 | ||
2261 | /* Now read in the string table in one big gulp. */ | |
2262 | ||
2263 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
2264 | if (val < 0) | |
2265 | perror_with_name (name); | |
2266 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
2267 | if (val != stabstrsize) | |
2268 | perror_with_name (name); | |
2269 | ||
2270 | stabsread_new_init (); | |
2271 | buildsym_new_init (); | |
2272 | free_header_files (); | |
2273 | init_header_files (); | |
2274 | ||
2275 | processing_acc_compilation = 1; | |
2276 | ||
2277 | /* In a coff file, we've already installed the minimal symbols that came | |
2278 | from the coff (non-stab) symbol table, so always act like an | |
2279 | incremental load here. */ | |
2280 | dbx_symfile_read (objfile, section_offsets, 0); | |
2281 | } | |
2282 | \f | |
9342ecb9 JG |
2283 | /* Scan and build partial symbols for an ELF symbol file. |
2284 | This ELF file has already been processed to get its minimal symbols, | |
2285 | and any DWARF symbols that were in it. | |
2286 | ||
2287 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2288 | rolled into one. | |
2289 | ||
2290 | OBJFILE is the object file we are reading symbols from. | |
2291 | ADDR is the address relative to which the symbols are (e.g. | |
2292 | the base address of the text segment). | |
2293 | MAINLINE is true if we are reading the main symbol | |
2294 | table (as opposed to a shared lib or dynamically loaded file). | |
2295 | STABOFFSET and STABSIZE define the location in OBJFILE where the .stab | |
2296 | section exists. | |
2297 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
2298 | .stabstr section exists. | |
2299 | ||
2300 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
2301 | adjusted for elf details. */ | |
2302 | ||
2303 | void | |
1aed6766 | 2304 | elfstab_build_psymtabs (objfile, section_offsets, mainline, |
9342ecb9 | 2305 | staboffset, stabsize, |
1aed6766 SG |
2306 | stabstroffset, stabstrsize) |
2307 | struct objfile *objfile; | |
2308 | struct section_offsets *section_offsets; | |
2309 | int mainline; | |
51b80b00 | 2310 | file_ptr staboffset; |
1aed6766 | 2311 | unsigned int stabsize; |
51b80b00 | 2312 | file_ptr stabstroffset; |
1aed6766 | 2313 | unsigned int stabstrsize; |
9342ecb9 JG |
2314 | { |
2315 | int val; | |
2316 | bfd *sym_bfd = objfile->obfd; | |
2317 | char *name = bfd_get_filename (sym_bfd); | |
2318 | struct dbx_symfile_info *info; | |
2319 | ||
2af231b8 JG |
2320 | /* There is already a dbx_symfile_info allocated by our caller. |
2321 | It might even contain some info from the ELF symtab to help us. */ | |
965a5c32 | 2322 | info = (struct dbx_symfile_info *) objfile->sym_stab_info; |
9342ecb9 JG |
2323 | |
2324 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
2325 | if (!DBX_TEXT_SECT (objfile)) | |
2326 | error ("Can't find .text section in symbol file"); | |
2327 | ||
2328 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
2329 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; | |
2330 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
2331 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; | |
2332 | DBX_SYMTAB_OFFSET (objfile) = staboffset; | |
2333 | ||
996ccb30 | 2334 | if (stabstrsize > bfd_get_size (sym_bfd)) |
9342ecb9 JG |
2335 | error ("ridiculous string table size: %d bytes", stabstrsize); |
2336 | DBX_STRINGTAB (objfile) = (char *) | |
2337 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
2338 | ||
2339 | /* Now read in the string table in one big gulp. */ | |
2340 | ||
2c7ab4ca | 2341 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); |
9342ecb9 JG |
2342 | if (val < 0) |
2343 | perror_with_name (name); | |
2344 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
2345 | if (val != stabstrsize) | |
2346 | perror_with_name (name); | |
2347 | ||
3416d90b | 2348 | stabsread_new_init (); |
9342ecb9 JG |
2349 | buildsym_new_init (); |
2350 | free_header_files (); | |
2351 | init_header_files (); | |
2352 | install_minimal_symbols (objfile); | |
2353 | ||
2354 | processing_acc_compilation = 1; | |
2355 | ||
2356 | /* In an elf file, we've already installed the minimal symbols that came | |
2357 | from the elf (non-stab) symbol table, so always act like an | |
2358 | incremental load here. */ | |
2af231b8 JG |
2359 | dbx_symfile_read (objfile, section_offsets, 0); |
2360 | } | |
2361 | \f | |
a66e8382 SG |
2362 | /* Scan and build partial symbols for a file with special sections for stabs |
2363 | and stabstrings. The file has already been processed to get its minimal | |
2364 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
2365 | ||
2366 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2367 | rolled into one. | |
2368 | ||
2369 | OBJFILE is the object file we are reading symbols from. | |
2370 | ADDR is the address relative to which the symbols are (e.g. the base address | |
2371 | of the text segment). | |
2372 | MAINLINE is true if we are reading the main symbol table (as opposed to a | |
2373 | shared lib or dynamically loaded file). | |
2374 | STAB_NAME is the name of the section that contains the stabs. | |
2375 | STABSTR_NAME is the name of the section that contains the stab strings. | |
2376 | ||
2377 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read. */ | |
2378 | ||
2379 | void | |
2380 | stabsect_build_psymtabs (objfile, section_offsets, mainline, stab_name, | |
320f93f7 | 2381 | stabstr_name, text_name) |
a66e8382 SG |
2382 | struct objfile *objfile; |
2383 | struct section_offsets *section_offsets; | |
2384 | int mainline; | |
2385 | char *stab_name; | |
2386 | char *stabstr_name; | |
320f93f7 | 2387 | char *text_name; |
a66e8382 SG |
2388 | { |
2389 | int val; | |
2390 | bfd *sym_bfd = objfile->obfd; | |
2391 | char *name = bfd_get_filename (sym_bfd); | |
2392 | asection *stabsect; | |
2393 | asection *stabstrsect; | |
2394 | ||
2395 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
2396 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
2397 | ||
2398 | if (!stabsect) | |
2399 | return; | |
2400 | ||
2401 | if (!stabstrsect) | |
2402 | error ("stabsect_build_psymtabs: Found stabs (%s), but not string section (%s)", | |
2403 | stab_name, stabstr_name); | |
2404 | ||
bfe2f12b | 2405 | objfile->sym_stab_info = (PTR) xmalloc (sizeof (struct dbx_symfile_info)); |
a66e8382 SG |
2406 | memset (DBX_SYMFILE_INFO (objfile), 0, sizeof (struct dbx_symfile_info)); |
2407 | ||
320f93f7 | 2408 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, text_name); |
a66e8382 | 2409 | if (!DBX_TEXT_SECT (objfile)) |
320f93f7 | 2410 | error ("Can't find %s section in symbol file", text_name); |
a66e8382 SG |
2411 | |
2412 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); | |
2413 | DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect) | |
2414 | / DBX_SYMBOL_SIZE (objfile); | |
2415 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect); | |
2416 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING INSIDE BFD DATA STRUCTURES */ | |
2417 | ||
2418 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
2419 | error ("ridiculous string table size: %d bytes", DBX_STRINGTAB_SIZE (objfile)); | |
2420 | DBX_STRINGTAB (objfile) = (char *) | |
2421 | obstack_alloc (&objfile->psymbol_obstack, DBX_STRINGTAB_SIZE (objfile) + 1); | |
2422 | ||
2423 | /* Now read in the string table in one big gulp. */ | |
2424 | ||
2425 | val = bfd_get_section_contents (sym_bfd, /* bfd */ | |
2426 | stabstrsect, /* bfd section */ | |
2427 | DBX_STRINGTAB (objfile), /* input buffer */ | |
2428 | 0, /* offset into section */ | |
2429 | DBX_STRINGTAB_SIZE (objfile)); /* amount to read */ | |
2430 | ||
2431 | if (!val) | |
2432 | perror_with_name (name); | |
2433 | ||
2434 | stabsread_new_init (); | |
2435 | buildsym_new_init (); | |
2436 | free_header_files (); | |
2437 | init_header_files (); | |
2438 | install_minimal_symbols (objfile); | |
2439 | ||
2440 | /* Now, do an incremental load */ | |
2441 | ||
2442 | processing_acc_compilation = 1; | |
2443 | dbx_symfile_read (objfile, section_offsets, 0); | |
2444 | } | |
2445 | \f | |
2af231b8 JG |
2446 | /* Parse the user's idea of an offset for dynamic linking, into our idea |
2447 | of how to represent it for fast symbol reading. */ | |
2448 | ||
040b9597 | 2449 | static struct section_offsets * |
2af231b8 JG |
2450 | dbx_symfile_offsets (objfile, addr) |
2451 | struct objfile *objfile; | |
2452 | CORE_ADDR addr; | |
2453 | { | |
2454 | struct section_offsets *section_offsets; | |
2455 | int i; | |
4d57c599 JK |
2456 | |
2457 | objfile->num_sections = SECT_OFF_MAX; | |
2af231b8 JG |
2458 | section_offsets = (struct section_offsets *) |
2459 | obstack_alloc (&objfile -> psymbol_obstack, | |
4d57c599 JK |
2460 | sizeof (struct section_offsets) |
2461 | + sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1)); | |
2af231b8 JG |
2462 | |
2463 | for (i = 0; i < SECT_OFF_MAX; i++) | |
2464 | ANOFFSET (section_offsets, i) = addr; | |
2465 | ||
2466 | return section_offsets; | |
9342ecb9 JG |
2467 | } |
2468 | \f | |
80d68b1d FF |
2469 | static struct sym_fns aout_sym_fns = |
2470 | { | |
0eed42de | 2471 | bfd_target_aout_flavour, |
80d68b1d FF |
2472 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2473 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2474 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2475 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2af231b8 | 2476 | dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
80d68b1d FF |
2477 | NULL /* next: pointer to next struct sym_fns */ |
2478 | }; | |
bd5635a1 RP |
2479 | |
2480 | void | |
2481 | _initialize_dbxread () | |
2482 | { | |
bd5635a1 | 2483 | add_symtab_fns(&aout_sym_fns); |
bd5635a1 | 2484 | } |