Commit | Line | Data |
---|---|---|
bd5635a1 | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
94f5a25f | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996 |
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 | 18 | along with this program; if not, write to the Free Software |
45886199 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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" |
2b576293 | 36 | #include "gdb_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 | ||
f309ad95 | 43 | #include "obstack.h" |
afe4ca15 | 44 | #include <sys/param.h> |
021959e2 | 45 | #ifndef NO_SYS_FILE |
afe4ca15 | 46 | #include <sys/file.h> |
021959e2 | 47 | #endif |
2b576293 | 48 | #include "gdb_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 | |
94f5a25f DP |
68 | /* defined in stabsread.c; used for completing cfront stabs strings */ |
69 | extern void resolve_cont PARAMS((struct objfile * objfile, struct symbol * sym, char * p)); | |
70 | ||
989d9cba | 71 | \f |
2b576293 C |
72 | /* We put a pointer to this structure in the read_symtab_private field |
73 | of the psymtab. */ | |
4a35d6e9 | 74 | |
989d9cba | 75 | struct symloc { |
4a35d6e9 | 76 | |
989d9cba JK |
77 | /* Offset within the file symbol table of first local symbol for this |
78 | file. */ | |
4a35d6e9 | 79 | |
4a35d6e9 | 80 | int ldsymoff; |
989d9cba JK |
81 | |
82 | /* Length (in bytes) of the section of the symbol table devoted to | |
83 | this file's symbols (actually, the section bracketed may contain | |
84 | more than just this file's symbols). If ldsymlen is 0, the only | |
85 | reason for this thing's existence is the dependency list. Nothing | |
86 | else will happen when it is read in. */ | |
87 | ||
4a35d6e9 | 88 | int ldsymlen; |
989d9cba JK |
89 | |
90 | /* The size of each symbol in the symbol file (in external form). */ | |
91 | ||
9342ecb9 | 92 | int symbol_size; |
989d9cba JK |
93 | |
94 | /* Further information needed to locate the symbols if they are in | |
95 | an ELF file. */ | |
96 | ||
9342ecb9 JG |
97 | int symbol_offset; |
98 | int string_offset; | |
99 | int file_string_offset; | |
4a35d6e9 FF |
100 | }; |
101 | ||
989d9cba JK |
102 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) |
103 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
104 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) | |
105 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
106 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
107 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
108 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
109 | ||
110 | \f | |
bd5635a1 RP |
111 | /* Macro to determine which symbols to ignore when reading the first symbol |
112 | of a file. Some machines override this definition. */ | |
113 | #ifndef IGNORE_SYMBOL | |
114 | /* This code is used on Ultrix systems. Ignore it */ | |
115 | #define IGNORE_SYMBOL(type) (type == (int)N_NSYMS) | |
116 | #endif | |
117 | ||
2e4964ad FF |
118 | /* Remember what we deduced to be the source language of this psymtab. */ |
119 | ||
120 | static enum language psymtab_language = language_unknown; | |
121 | ||
bd5635a1 RP |
122 | /* Nonzero means give verbose info on gdb action. From main.c. */ |
123 | extern int info_verbose; | |
124 | ||
7d9884b9 | 125 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
bd5635a1 | 126 | |
c0302457 | 127 | static bfd *symfile_bfd; |
bd5635a1 | 128 | |
afe4ca15 JG |
129 | /* The size of each symbol in the symbol file (in external form). |
130 | This is set by dbx_symfile_read when building psymtabs, and by | |
131 | dbx_psymtab_to_symtab when building symtabs. */ | |
132 | ||
133 | static unsigned symbol_size; | |
134 | ||
9342ecb9 JG |
135 | /* This is the offset of the symbol table in the executable file */ |
136 | static unsigned symbol_table_offset; | |
137 | ||
138 | /* This is the offset of the string table in the executable file */ | |
139 | static unsigned string_table_offset; | |
140 | ||
141 | /* For elf+stab executables, the n_strx field is not a simple index | |
142 | into the string table. Instead, each .o file has a base offset | |
143 | in the string table, and the associated symbols contain offsets | |
144 | from this base. The following two variables contain the base | |
145 | offset for the current and next .o files. */ | |
146 | static unsigned int file_string_table_offset; | |
147 | static unsigned int next_file_string_table_offset; | |
a66e8382 SG |
148 | |
149 | /* .o and NLM files contain unrelocated addresses which are based at 0. When | |
150 | non-zero, this flag disables some of the special cases for Solaris elf+stab | |
151 | text addresses at location 0. */ | |
152 | ||
153 | static int symfile_relocatable = 0; | |
bfe2f12b JL |
154 | |
155 | /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are relative | |
156 | to the function start address. */ | |
157 | ||
158 | static int block_address_function_relative = 0; | |
9d2b8d50 | 159 | \f |
ab52cc44 JK |
160 | /* The lowest text address we have yet encountered. This is needed |
161 | because in an a.out file, there is no header field which tells us | |
162 | what address the program is actually going to be loaded at, so we | |
163 | need to make guesses based on the symbols (which *are* relocated to | |
164 | reflect the address it will be loaded at). */ | |
9d2b8d50 | 165 | static CORE_ADDR lowest_text_address; |
9342ecb9 | 166 | |
bd5635a1 RP |
167 | /* Complaints about the symbols we have encountered. */ |
168 | ||
bd5635a1 RP |
169 | struct complaint lbrac_complaint = |
170 | {"bad block start address patched", 0, 0}; | |
171 | ||
bd5635a1 RP |
172 | struct complaint string_table_offset_complaint = |
173 | {"bad string table offset in symbol %d", 0, 0}; | |
174 | ||
175 | struct complaint unknown_symtype_complaint = | |
0c4d2cc2 | 176 | {"unknown symbol type %s", 0, 0}; |
bd5635a1 | 177 | |
65ce5df4 | 178 | struct complaint unknown_symchar_complaint = |
b30c81b6 | 179 | {"unknown symbol descriptor `%c'", 0, 0}; |
65ce5df4 | 180 | |
bd5635a1 RP |
181 | struct complaint lbrac_rbrac_complaint = |
182 | {"block start larger than block end", 0, 0}; | |
7d9884b9 JG |
183 | |
184 | struct complaint lbrac_unmatched_complaint = | |
185 | {"unmatched N_LBRAC before symtab pos %d", 0, 0}; | |
186 | ||
187 | struct complaint lbrac_mismatch_complaint = | |
188 | {"N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", 0, 0}; | |
9342ecb9 JG |
189 | |
190 | struct complaint repeated_header_complaint = | |
26a859ec | 191 | {"\"repeated\" header file %s not previously seen, at symtab pos %d", 0, 0}; |
bd5635a1 | 192 | \f |
bd5635a1 RP |
193 | /* During initial symbol readin, we need to have a structure to keep |
194 | track of which psymtabs have which bincls in them. This structure | |
195 | is used during readin to setup the list of dependencies within each | |
196 | partial symbol table. */ | |
197 | ||
198 | struct header_file_location | |
199 | { | |
200 | char *name; /* Name of header file */ | |
201 | int instance; /* See above */ | |
202 | struct partial_symtab *pst; /* Partial symtab that has the | |
203 | BINCL/EINCL defs for this file */ | |
204 | }; | |
205 | ||
206 | /* The actual list and controling variables */ | |
207 | static struct header_file_location *bincl_list, *next_bincl; | |
208 | static int bincls_allocated; | |
209 | ||
021959e2 JG |
210 | /* Local function prototypes */ |
211 | ||
212 | static void | |
80d68b1d FF |
213 | free_header_files PARAMS ((void)); |
214 | ||
215 | static void | |
216 | init_header_files PARAMS ((void)); | |
021959e2 | 217 | |
574dac8e JK |
218 | static void |
219 | read_ofile_symtab PARAMS ((struct partial_symtab *)); | |
021959e2 JG |
220 | |
221 | static void | |
222 | dbx_psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
223 | ||
224 | static void | |
4c07f28d | 225 | dbx_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *)); |
021959e2 | 226 | |
5801f348 JK |
227 | static void |
228 | read_dbx_dynamic_symtab PARAMS ((struct section_offsets *, | |
229 | struct objfile *objfile)); | |
230 | ||
021959e2 | 231 | static void |
2af231b8 JG |
232 | read_dbx_symtab PARAMS ((struct section_offsets *, struct objfile *, |
233 | CORE_ADDR, int)); | |
021959e2 JG |
234 | |
235 | static void | |
236 | free_bincl_list PARAMS ((struct objfile *)); | |
237 | ||
238 | static struct partial_symtab * | |
239 | find_corresponding_bincl_psymtab PARAMS ((char *, int)); | |
240 | ||
241 | static void | |
242 | add_bincl_to_list PARAMS ((struct partial_symtab *, char *, int)); | |
243 | ||
244 | static void | |
245 | init_bincl_list PARAMS ((int, struct objfile *)); | |
246 | ||
021959e2 | 247 | static char * |
94f5a25f | 248 | dbx_next_symbol_text PARAMS ((struct objfile *)); |
021959e2 JG |
249 | |
250 | static void | |
251 | fill_symbuf PARAMS ((bfd *)); | |
252 | ||
253 | static void | |
80d68b1d FF |
254 | dbx_symfile_init PARAMS ((struct objfile *)); |
255 | ||
256 | static void | |
257 | dbx_new_init PARAMS ((struct objfile *)); | |
021959e2 JG |
258 | |
259 | static void | |
2af231b8 | 260 | dbx_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); |
021959e2 JG |
261 | |
262 | static void | |
80d68b1d | 263 | dbx_symfile_finish PARAMS ((struct objfile *)); |
021959e2 JG |
264 | |
265 | static void | |
266 | record_minimal_symbol PARAMS ((char *, CORE_ADDR, int, struct objfile *)); | |
267 | ||
268 | static void | |
269 | add_new_header_file PARAMS ((char *, int)); | |
270 | ||
271 | static void | |
272 | add_old_header_file PARAMS ((char *, int)); | |
273 | ||
274 | static void | |
275 | add_this_object_header_file PARAMS ((int)); | |
276 | ||
80d68b1d | 277 | /* Free up old header file tables */ |
bd5635a1 | 278 | |
021959e2 | 279 | static void |
80d68b1d | 280 | free_header_files () |
bd5635a1 RP |
281 | { |
282 | register int i; | |
bd5635a1 | 283 | |
80d68b1d FF |
284 | if (header_files != NULL) |
285 | { | |
286 | for (i = 0; i < n_header_files; i++) | |
287 | { | |
288 | free (header_files[i].name); | |
289 | } | |
ac88ca20 | 290 | free ((PTR)header_files); |
80d68b1d FF |
291 | header_files = NULL; |
292 | n_header_files = 0; | |
293 | } | |
294 | if (this_object_header_files) | |
295 | { | |
ac88ca20 | 296 | free ((PTR)this_object_header_files); |
80d68b1d FF |
297 | this_object_header_files = NULL; |
298 | } | |
299 | n_allocated_header_files = 0; | |
300 | n_allocated_this_object_header_files = 0; | |
301 | } | |
302 | ||
303 | /* Allocate new header file tables */ | |
304 | ||
305 | static void | |
306 | init_header_files () | |
307 | { | |
bd5635a1 | 308 | n_header_files = 0; |
80d68b1d FF |
309 | n_allocated_header_files = 10; |
310 | header_files = (struct header_file *) | |
311 | xmalloc (10 * sizeof (struct header_file)); | |
bd5635a1 RP |
312 | |
313 | n_allocated_this_object_header_files = 10; | |
314 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); | |
315 | } | |
316 | ||
bd5635a1 RP |
317 | /* Add header file number I for this object file |
318 | at the next successive FILENUM. */ | |
319 | ||
320 | static void | |
321 | add_this_object_header_file (i) | |
322 | int i; | |
323 | { | |
324 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
325 | { | |
326 | n_allocated_this_object_header_files *= 2; | |
327 | this_object_header_files | |
021959e2 | 328 | = (int *) xrealloc ((char *) this_object_header_files, |
bd5635a1 RP |
329 | n_allocated_this_object_header_files * sizeof (int)); |
330 | } | |
331 | ||
332 | this_object_header_files[n_this_object_header_files++] = i; | |
333 | } | |
334 | ||
335 | /* Add to this file an "old" header file, one already seen in | |
336 | a previous object file. NAME is the header file's name. | |
337 | INSTANCE is its instance code, to select among multiple | |
338 | symbol tables for the same header file. */ | |
339 | ||
340 | static void | |
341 | add_old_header_file (name, instance) | |
342 | char *name; | |
343 | int instance; | |
344 | { | |
345 | register struct header_file *p = header_files; | |
346 | register int i; | |
347 | ||
348 | for (i = 0; i < n_header_files; i++) | |
2e4964ad | 349 | if (STREQ (p[i].name, name) && instance == p[i].instance) |
bd5635a1 RP |
350 | { |
351 | add_this_object_header_file (i); | |
352 | return; | |
353 | } | |
26a859ec | 354 | complain (&repeated_header_complaint, name, symnum); |
bd5635a1 RP |
355 | } |
356 | ||
357 | /* Add to this file a "new" header file: definitions for its types follow. | |
358 | NAME is the header file's name. | |
359 | Most often this happens only once for each distinct header file, | |
360 | but not necessarily. If it happens more than once, INSTANCE has | |
361 | a different value each time, and references to the header file | |
362 | use INSTANCE values to select among them. | |
363 | ||
364 | dbx output contains "begin" and "end" markers for each new header file, | |
365 | but at this level we just need to know which files there have been; | |
366 | so we record the file when its "begin" is seen and ignore the "end". */ | |
367 | ||
368 | static void | |
369 | add_new_header_file (name, instance) | |
370 | char *name; | |
371 | int instance; | |
372 | { | |
373 | register int i; | |
bd5635a1 RP |
374 | |
375 | /* Make sure there is room for one more header file. */ | |
376 | ||
377 | if (n_header_files == n_allocated_header_files) | |
378 | { | |
379 | n_allocated_header_files *= 2; | |
380 | header_files = (struct header_file *) | |
021959e2 JG |
381 | xrealloc ((char *) header_files, |
382 | (n_allocated_header_files * sizeof (struct header_file))); | |
bd5635a1 RP |
383 | } |
384 | ||
385 | /* Create an entry for this header file. */ | |
386 | ||
387 | i = n_header_files++; | |
388 | header_files[i].name = savestring (name, strlen(name)); | |
389 | header_files[i].instance = instance; | |
390 | header_files[i].length = 10; | |
391 | header_files[i].vector | |
392 | = (struct type **) xmalloc (10 * sizeof (struct type *)); | |
4ed3a9ea | 393 | memset (header_files[i].vector, 0, 10 * sizeof (struct type *)); |
bd5635a1 RP |
394 | |
395 | add_this_object_header_file (i); | |
396 | } | |
397 | ||
bd5635a1 RP |
398 | #if 0 |
399 | static struct type ** | |
400 | explicit_lookup_type (real_filenum, index) | |
401 | int real_filenum, index; | |
402 | { | |
403 | register struct header_file *f = &header_files[real_filenum]; | |
404 | ||
405 | if (index >= f->length) | |
406 | { | |
407 | f->length *= 2; | |
408 | f->vector = (struct type **) | |
409 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
4ed97c9a RP |
410 | memset (&f->vector[f->length / 2], |
411 | '\0', f->length * sizeof (struct type *) / 2); | |
bd5635a1 RP |
412 | } |
413 | return &f->vector[index]; | |
414 | } | |
415 | #endif | |
416 | \f | |
9bba3334 | 417 | static void |
021959e2 | 418 | record_minimal_symbol (name, address, type, objfile) |
bd5635a1 RP |
419 | char *name; |
420 | CORE_ADDR address; | |
421 | int type; | |
021959e2 | 422 | struct objfile *objfile; |
bd5635a1 | 423 | { |
021959e2 | 424 | enum minimal_symbol_type ms_type; |
a66e8382 | 425 | int section; |
0c4d2cc2 | 426 | |
b8ec9a79 JK |
427 | switch (type) |
428 | { | |
a66e8382 SG |
429 | case N_TEXT | N_EXT: |
430 | ms_type = mst_text; | |
431 | section = SECT_OFF_TEXT; | |
432 | break; | |
433 | case N_DATA | N_EXT: | |
434 | ms_type = mst_data; | |
435 | section = SECT_OFF_DATA; | |
436 | break; | |
437 | case N_BSS | N_EXT: | |
438 | ms_type = mst_bss; | |
439 | section = SECT_OFF_BSS; | |
440 | break; | |
441 | case N_ABS | N_EXT: | |
442 | ms_type = mst_abs; | |
443 | section = -1; | |
444 | break; | |
0c4d2cc2 | 445 | #ifdef N_SETV |
a66e8382 SG |
446 | case N_SETV | N_EXT: |
447 | ms_type = mst_data; | |
448 | section = SECT_OFF_DATA; | |
449 | break; | |
b8ec9a79 JK |
450 | case N_SETV: |
451 | /* I don't think this type actually exists; since a N_SETV is the result | |
452 | of going over many .o files, it doesn't make sense to have one | |
453 | file local. */ | |
454 | ms_type = mst_file_data; | |
a66e8382 | 455 | section = SECT_OFF_DATA; |
b8ec9a79 | 456 | break; |
0c4d2cc2 | 457 | #endif |
05c81f45 | 458 | case N_TEXT: |
b8ec9a79 JK |
459 | case N_NBTEXT: |
460 | case N_FN: | |
461 | case N_FN_SEQ: | |
b8ec9a79 | 462 | ms_type = mst_file_text; |
a66e8382 | 463 | section = SECT_OFF_TEXT; |
b8ec9a79 | 464 | break; |
b8ec9a79 JK |
465 | case N_DATA: |
466 | ms_type = mst_file_data; | |
467 | ||
468 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
469 | Record it as global even if it's local, not global, so | |
05c81f45 SEF |
470 | lookup_minimal_symbol can find it. We don't check symbol_leading_char |
471 | because for SunOS4 it always is '_'. */ | |
b8ec9a79 JK |
472 | if (name[8] == 'C' && STREQ ("__DYNAMIC", name)) |
473 | ms_type = mst_data; | |
474 | ||
475 | /* Same with virtual function tables, both global and static. */ | |
476 | { | |
477 | char *tempstring = name; | |
478 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) | |
479 | ++tempstring; | |
480 | if (VTBL_PREFIX_P ((tempstring))) | |
481 | ms_type = mst_data; | |
482 | } | |
a66e8382 | 483 | section = SECT_OFF_DATA; |
b8ec9a79 | 484 | break; |
b8ec9a79 JK |
485 | case N_BSS: |
486 | ms_type = mst_file_bss; | |
a66e8382 SG |
487 | section = SECT_OFF_BSS; |
488 | break; | |
489 | default: | |
490 | ms_type = mst_unknown; | |
491 | section = -1; | |
b8ec9a79 | 492 | break; |
0c4d2cc2 | 493 | } |
bd5635a1 | 494 | |
bfe2f12b | 495 | if ((ms_type == mst_file_text || ms_type == mst_text) |
9d2b8d50 JK |
496 | && address < lowest_text_address) |
497 | lowest_text_address = address; | |
498 | ||
a66e8382 | 499 | prim_record_minimal_symbol_and_info |
b8ec9a79 JK |
500 | (obsavestring (name, strlen (name), &objfile -> symbol_obstack), |
501 | address, | |
6545c6a0 | 502 | ms_type, |
a66e8382 SG |
503 | NULL, |
504 | section, | |
6545c6a0 | 505 | objfile); |
bd5635a1 RP |
506 | } |
507 | \f | |
508 | /* Scan and build partial symbols for a symbol file. | |
509 | We have been initialized by a call to dbx_symfile_init, which | |
3624c875 FF |
510 | put all the relevant info into a "struct dbx_symfile_info", |
511 | hung off the objfile structure. | |
bd5635a1 | 512 | |
2af231b8 JG |
513 | SECTION_OFFSETS contains offsets relative to which the symbols in the |
514 | various sections are (depending where the sections were actually loaded). | |
bd5635a1 RP |
515 | MAINLINE is true if we are reading the main symbol |
516 | table (as opposed to a shared lib or dynamically loaded file). */ | |
517 | ||
9bba3334 | 518 | static void |
2af231b8 | 519 | dbx_symfile_read (objfile, section_offsets, mainline) |
80d68b1d | 520 | struct objfile *objfile; |
2af231b8 | 521 | struct section_offsets *section_offsets; |
bd5635a1 RP |
522 | int mainline; /* FIXME comments above */ |
523 | { | |
80d68b1d | 524 | bfd *sym_bfd; |
bd5635a1 | 525 | int val; |
0eb22669 | 526 | struct cleanup *back_to; |
bd5635a1 | 527 | |
a66e8382 SG |
528 | val = strlen (objfile->name); |
529 | ||
530 | /* .o and .nlm files are relocatables with text, data and bss segs based at | |
531 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for | |
532 | symbols with a value of 0. XXX - This is a Krock. Solaris stabs-in-elf | |
533 | should be fixed to determine pst->textlow without using this text seg of | |
534 | 0 fixup crap. */ | |
535 | ||
536 | if (strcmp (&objfile->name[val-2], ".o") == 0 | |
537 | || strcmp (&objfile->name[val-4], ".nlm") == 0) | |
538 | symfile_relocatable = 1; | |
539 | ||
bfe2f12b JL |
540 | /* This is true for Solaris (and all other systems which put stabs |
541 | in sections, hopefully, since it would be silly to do things | |
542 | differently from Solaris), and false for SunOS4 and other a.out | |
543 | file formats. */ | |
544 | block_address_function_relative = | |
545 | ((0 == strncmp (bfd_get_target (objfile->obfd), "elf", 3)) | |
546 | || (0 == strncmp (bfd_get_target (objfile->obfd), "som", 3)) | |
547 | || (0 == strncmp (bfd_get_target (objfile->obfd), "coff", 4)) | |
45886199 | 548 | || (0 == strncmp (bfd_get_target (objfile->obfd), "pe", 2)) |
bfe2f12b JL |
549 | || (0 == strncmp (bfd_get_target (objfile->obfd), "nlm", 3))); |
550 | ||
80d68b1d | 551 | sym_bfd = objfile->obfd; |
2c7ab4ca | 552 | val = bfd_seek (objfile->obfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); |
bd5635a1 | 553 | if (val < 0) |
80d68b1d | 554 | perror_with_name (objfile->name); |
bd5635a1 | 555 | |
66eeea27 | 556 | /* If we are reinitializing, or if we have never loaded syms yet, init */ |
a367db89 JK |
557 | if (mainline |
558 | || objfile->global_psymbols.size == 0 | |
559 | || objfile->static_psymbols.size == 0) | |
560 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); | |
66eeea27 | 561 | |
9342ecb9 JG |
562 | symbol_size = DBX_SYMBOL_SIZE (objfile); |
563 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
afe4ca15 | 564 | |
bd5635a1 | 565 | pending_blocks = 0; |
0eb22669 | 566 | back_to = make_cleanup (really_free_pendings, 0); |
bd5635a1 | 567 | |
021959e2 JG |
568 | init_minimal_symbol_collection (); |
569 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
570 | |
571 | /* Now that the symbol table data of the executable file are all in core, | |
572 | process them and define symbols accordingly. */ | |
573 | ||
2af231b8 | 574 | read_dbx_symtab (section_offsets, objfile, |
2b576293 C |
575 | DBX_TEXT_ADDR (objfile), |
576 | DBX_TEXT_SIZE (objfile)); | |
bd5635a1 | 577 | |
26a859ec | 578 | /* Add the dynamic symbols. */ |
5801f348 | 579 | |
26a859ec | 580 | read_dbx_dynamic_symtab (section_offsets, objfile); |
5801f348 | 581 | |
021959e2 JG |
582 | /* Install any minimal symbols that have been collected as the current |
583 | minimal symbols for this objfile. */ | |
bd5635a1 | 584 | |
80d68b1d | 585 | install_minimal_symbols (objfile); |
bd5635a1 | 586 | |
0eb22669 | 587 | do_cleanups (back_to); |
bd5635a1 RP |
588 | } |
589 | ||
9404978d MT |
590 | /* Initialize anything that needs initializing when a completely new |
591 | symbol file is specified (not just adding some symbols from another | |
592 | file, e.g. a shared library). */ | |
bd5635a1 | 593 | |
9bba3334 | 594 | static void |
ac88ca20 JG |
595 | dbx_new_init (ignore) |
596 | struct objfile *ignore; | |
bd5635a1 | 597 | { |
3416d90b | 598 | stabsread_new_init (); |
c0302457 | 599 | buildsym_new_init (); |
80d68b1d | 600 | init_header_files (); |
bd5635a1 RP |
601 | } |
602 | ||
603 | ||
604 | /* dbx_symfile_init () | |
605 | is the dbx-specific initialization routine for reading symbols. | |
80d68b1d | 606 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
607 | the BFD for the file whose symbols are being read, and a slot for a pointer |
608 | to "private data" which we fill with goodies. | |
609 | ||
610 | We read the string table into malloc'd space and stash a pointer to it. | |
611 | ||
612 | Since BFD doesn't know how to read debug symbols in a format-independent | |
613 | way (and may never do so...), we have to do it ourselves. We will never | |
614 | be called unless this is an a.out (or very similar) file. | |
615 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
616 | ||
69a272c4 FF |
617 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
618 | ||
9bba3334 | 619 | static void |
80d68b1d FF |
620 | dbx_symfile_init (objfile) |
621 | struct objfile *objfile; | |
bd5635a1 RP |
622 | { |
623 | int val; | |
80d68b1d | 624 | bfd *sym_bfd = objfile->obfd; |
bd5635a1 | 625 | char *name = bfd_get_filename (sym_bfd); |
2b576293 | 626 | asection *text_sect; |
69a272c4 | 627 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; |
bd5635a1 RP |
628 | |
629 | /* Allocate struct to keep track of the symfile */ | |
965a5c32 | 630 | objfile->sym_stab_info = (PTR) |
3624c875 | 631 | xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info)); |
bd5635a1 RP |
632 | |
633 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
bd5635a1 RP |
634 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
635 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
040b9597 | 636 | |
bd5635a1 RP |
637 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
638 | ||
784fd92b | 639 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; |
2b576293 C |
640 | |
641 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); | |
642 | if (!text_sect) | |
9342ecb9 | 643 | error ("Can't find .text section in symbol file"); |
2b576293 C |
644 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
645 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
9342ecb9 | 646 | |
bf18ac80 | 647 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); |
7da1e27d | 648 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); |
9342ecb9 | 649 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; |
3624c875 FF |
650 | |
651 | /* Read the string table and stash it away in the psymbol_obstack. It is | |
652 | only needed as long as we need to expand psymbols into full symbols, | |
653 | so when we blow away the psymbol the string table goes away as well. | |
654 | Note that gdb used to use the results of attempting to malloc the | |
655 | string table, based on the size it read, as a form of sanity check | |
656 | for botched byte swapping, on the theory that a byte swapped string | |
657 | table size would be so totally bogus that the malloc would fail. Now | |
658 | that we put in on the psymbol_obstack, we can't do this since gdb gets | |
659 | a fatal error (out of virtual memory) if the size is bogus. We can | |
69a272c4 FF |
660 | however at least check to see if the size is less than the size of |
661 | the size field itself, or larger than the size of the entire file. | |
662 | Note that all valid string tables have a size greater than zero, since | |
663 | the bytes used to hold the size are included in the count. */ | |
3624c875 | 664 | |
69a272c4 FF |
665 | if (STRING_TABLE_OFFSET == 0) |
666 | { | |
65ce5df4 JG |
667 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET |
668 | will never be zero, even when there is no string table. This | |
669 | would appear to be a bug in bfd. */ | |
69a272c4 FF |
670 | DBX_STRINGTAB_SIZE (objfile) = 0; |
671 | DBX_STRINGTAB (objfile) = NULL; | |
672 | } | |
673 | else | |
674 | { | |
2c7ab4ca | 675 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
69a272c4 FF |
676 | if (val < 0) |
677 | perror_with_name (name); | |
678 | ||
679 | memset ((PTR) size_temp, 0, sizeof (size_temp)); | |
680 | val = bfd_read ((PTR) size_temp, sizeof (size_temp), 1, sym_bfd); | |
681 | if (val < 0) | |
65ce5df4 JG |
682 | { |
683 | perror_with_name (name); | |
684 | } | |
685 | else if (val == 0) | |
686 | { | |
687 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
688 | EOF if there is no string table, and attempting to read the size | |
689 | from EOF will read zero bytes. */ | |
690 | DBX_STRINGTAB_SIZE (objfile) = 0; | |
691 | DBX_STRINGTAB (objfile) = NULL; | |
692 | } | |
693 | else | |
694 | { | |
695 | /* Read some data that would appear to be the string table size. | |
696 | If there really is a string table, then it is probably the right | |
697 | size. Byteswap if necessary and validate the size. Note that | |
698 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
699 | random data that happened to be at STRING_TABLE_OFFSET, because | |
700 | bfd can't tell us there is no string table, the sanity checks may | |
701 | or may not catch this. */ | |
702 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); | |
703 | ||
704 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) | |
705 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
706 | error ("ridiculous string table size (%d bytes).", | |
707 | DBX_STRINGTAB_SIZE (objfile)); | |
708 | ||
709 | DBX_STRINGTAB (objfile) = | |
710 | (char *) obstack_alloc (&objfile -> psymbol_obstack, | |
711 | DBX_STRINGTAB_SIZE (objfile)); | |
94f5a25f | 712 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); |
65ce5df4 JG |
713 | |
714 | /* Now read in the string table in one big gulp. */ | |
715 | ||
2c7ab4ca | 716 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
65ce5df4 JG |
717 | if (val < 0) |
718 | perror_with_name (name); | |
719 | val = bfd_read (DBX_STRINGTAB (objfile), DBX_STRINGTAB_SIZE (objfile), 1, | |
720 | sym_bfd); | |
721 | if (val != DBX_STRINGTAB_SIZE (objfile)) | |
722 | perror_with_name (name); | |
723 | } | |
69a272c4 | 724 | } |
bd5635a1 | 725 | } |
80d68b1d FF |
726 | |
727 | /* Perform any local cleanups required when we are done with a particular | |
728 | objfile. I.E, we are in the process of discarding all symbol information | |
729 | for an objfile, freeing up all memory held for it, and unlinking the | |
730 | objfile struct from the global list of known objfiles. */ | |
731 | ||
732 | static void | |
733 | dbx_symfile_finish (objfile) | |
734 | struct objfile *objfile; | |
735 | { | |
965a5c32 | 736 | if (objfile->sym_stab_info != NULL) |
80d68b1d | 737 | { |
965a5c32 | 738 | mfree (objfile -> md, objfile->sym_stab_info); |
80d68b1d FF |
739 | } |
740 | free_header_files (); | |
741 | } | |
742 | ||
bd5635a1 RP |
743 | \f |
744 | /* Buffer for reading the symbol table entries. */ | |
afe4ca15 | 745 | static struct internal_nlist symbuf[4096]; |
bd5635a1 RP |
746 | static int symbuf_idx; |
747 | static int symbuf_end; | |
748 | ||
94f5a25f DP |
749 | /* cont_elem is used for continuing information in cfront. |
750 | It saves information about which types need to be fixed up and | |
751 | completed after all the stabs are read. */ | |
752 | struct cont_elem | |
753 | { | |
754 | /* sym and stabsstring for continuing information in cfront */ | |
755 | struct symbol * sym; | |
756 | char * stabs; | |
757 | /* state dependancies (statics that must be preserved) */ | |
758 | int sym_idx; | |
759 | int sym_end; | |
760 | int symnum; | |
761 | /* other state dependancies include: | |
762 | (assumption is that these will not change since process_now FIXME!!) | |
763 | stringtab_global | |
764 | n_stabs | |
765 | objfile | |
766 | symfile_bfd */ | |
767 | }; | |
768 | static struct cont_elem cont_list[100]; | |
769 | static int cont_count = 0; | |
770 | ||
771 | void | |
772 | process_later(sym,p) | |
773 | struct symbol * sym; | |
774 | char * p; | |
775 | { | |
776 | /* save state so we can process these stabs later */ | |
777 | cont_list[cont_count].sym_idx = symbuf_idx; | |
778 | cont_list[cont_count].sym_end = symbuf_end; | |
779 | cont_list[cont_count].symnum = symnum; | |
780 | cont_list[cont_count].sym = sym; | |
781 | cont_list[cont_count].stabs = p; | |
782 | cont_count++; | |
783 | } | |
784 | ||
785 | void | |
786 | process_now(objfile) | |
787 | struct objfile * objfile; | |
788 | { | |
789 | int i; | |
790 | /* save original state */ | |
791 | int save_symbuf_idx = symbuf_idx; | |
792 | int save_symbuf_end = symbuf_end; | |
793 | int save_symnum = symnum; | |
794 | for (i=0; i<cont_count; i++) | |
795 | { | |
796 | /* set state as if we were parsing stabs strings | |
797 | for this symbol */ | |
798 | symbuf_idx = cont_list[i].sym_idx; /* statics used by gdb */ | |
799 | symbuf_end = cont_list[i].sym_end; | |
800 | symnum = cont_list[i].symnum; | |
801 | resolve_cont(objfile,cont_list[i].sym,cont_list[i].stabs); | |
802 | } | |
803 | /* restore original state */ | |
804 | symbuf_idx = save_symbuf_idx; | |
805 | symbuf_end = save_symbuf_end; | |
806 | symnum = save_symnum; | |
807 | cont_count=0; /* reset for next run */ | |
808 | } | |
809 | ||
810 | ||
9342ecb9 JG |
811 | /* Name of last function encountered. Used in Solaris to approximate |
812 | object file boundaries. */ | |
813 | static char *last_function_name; | |
814 | ||
bd5635a1 RP |
815 | /* The address in memory of the string table of the object file we are |
816 | reading (which might not be the "main" object file, but might be a | |
a367db89 JK |
817 | shared library or some other dynamically loaded thing). This is |
818 | set by read_dbx_symtab when building psymtabs, and by | |
819 | read_ofile_symtab when building symtabs, and is used only by | |
820 | next_symbol_text. FIXME: If that is true, we don't need it when | |
821 | building psymtabs, right? */ | |
bd5635a1 RP |
822 | static char *stringtab_global; |
823 | ||
2b576293 C |
824 | /* These variables are used to control fill_symbuf when the stabs |
825 | symbols are not contiguous (as may be the case when a COFF file is | |
826 | linked using --split-by-reloc). */ | |
827 | static struct stab_section_list *symbuf_sections; | |
828 | static unsigned int symbuf_left; | |
829 | static unsigned int symbuf_read; | |
830 | ||
bd5635a1 RP |
831 | /* Refill the symbol table input buffer |
832 | and set the variables that control fetching entries from it. | |
833 | Reports an error if no data available. | |
834 | This function can read past the end of the symbol table | |
835 | (into the string table) but this does no harm. */ | |
836 | ||
7d9884b9 JG |
837 | static void |
838 | fill_symbuf (sym_bfd) | |
839 | bfd *sym_bfd; | |
bd5635a1 | 840 | { |
2b576293 C |
841 | unsigned int count; |
842 | int nbytes; | |
843 | ||
844 | if (symbuf_sections == NULL) | |
845 | count = sizeof (symbuf); | |
846 | else | |
847 | { | |
848 | if (symbuf_left <= 0) | |
849 | { | |
850 | file_ptr filepos = symbuf_sections->section->filepos; | |
851 | if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0) | |
852 | perror_with_name (bfd_get_filename (sym_bfd)); | |
853 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section); | |
854 | symbol_table_offset = filepos - symbuf_read; | |
855 | symbuf_sections = symbuf_sections->next; | |
856 | } | |
857 | ||
858 | count = symbuf_left; | |
859 | if (count > sizeof (symbuf)) | |
860 | count = sizeof (symbuf); | |
861 | } | |
862 | ||
863 | nbytes = bfd_read ((PTR)symbuf, count, 1, sym_bfd); | |
bd5635a1 | 864 | if (nbytes < 0) |
7d9884b9 | 865 | perror_with_name (bfd_get_filename (sym_bfd)); |
bd5635a1 RP |
866 | else if (nbytes == 0) |
867 | error ("Premature end of file reading symbol table"); | |
afe4ca15 | 868 | symbuf_end = nbytes / symbol_size; |
bd5635a1 | 869 | symbuf_idx = 0; |
2b576293 C |
870 | symbuf_left -= nbytes; |
871 | symbuf_read += nbytes; | |
bd5635a1 RP |
872 | } |
873 | ||
7d9884b9 | 874 | #define SWAP_SYMBOL(symp, abfd) \ |
bd5635a1 | 875 | { \ |
7d9884b9 | 876 | (symp)->n_strx = bfd_h_get_32(abfd, \ |
afe4ca15 | 877 | (unsigned char *)&(symp)->n_strx); \ |
7d9884b9 | 878 | (symp)->n_desc = bfd_h_get_16 (abfd, \ |
bd5635a1 | 879 | (unsigned char *)&(symp)->n_desc); \ |
7d9884b9 | 880 | (symp)->n_value = bfd_h_get_32 (abfd, \ |
bd5635a1 RP |
881 | (unsigned char *)&(symp)->n_value); \ |
882 | } | |
883 | ||
884 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
885 | that hasn't been swapped. Swap the symbol at the same time | |
886 | that symbuf_idx is incremented. */ | |
887 | ||
888 | /* dbx allows the text of a symbol name to be continued into the | |
889 | next symbol name! When such a continuation is encountered | |
890 | (a \ at the end of the text of a name) | |
891 | call this function to get the continuation. */ | |
892 | ||
021959e2 | 893 | static char * |
94f5a25f DP |
894 | dbx_next_symbol_text (objfile) |
895 | struct objfile *objfile; | |
bd5635a1 RP |
896 | { |
897 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 898 | fill_symbuf (symfile_bfd); |
bd5635a1 | 899 | symnum++; |
7d9884b9 | 900 | SWAP_SYMBOL(&symbuf[symbuf_idx], symfile_bfd); |
94f5a25f | 901 | OBJSTAT (objfile, n_stabs++); |
9342ecb9 JG |
902 | return symbuf[symbuf_idx++].n_strx + stringtab_global |
903 | + file_string_table_offset; | |
bd5635a1 RP |
904 | } |
905 | \f | |
bd5635a1 RP |
906 | /* Initialize the list of bincls to contain none and have some |
907 | allocated. */ | |
908 | ||
909 | static void | |
021959e2 | 910 | init_bincl_list (number, objfile) |
bd5635a1 | 911 | int number; |
021959e2 | 912 | struct objfile *objfile; |
bd5635a1 RP |
913 | { |
914 | bincls_allocated = number; | |
915 | next_bincl = bincl_list = (struct header_file_location *) | |
318bf84f | 916 | xmmalloc (objfile -> md, bincls_allocated * sizeof(struct header_file_location)); |
bd5635a1 RP |
917 | } |
918 | ||
919 | /* Add a bincl to the list. */ | |
920 | ||
921 | static void | |
922 | add_bincl_to_list (pst, name, instance) | |
923 | struct partial_symtab *pst; | |
924 | char *name; | |
925 | int instance; | |
926 | { | |
927 | if (next_bincl >= bincl_list + bincls_allocated) | |
928 | { | |
929 | int offset = next_bincl - bincl_list; | |
930 | bincls_allocated *= 2; | |
931 | bincl_list = (struct header_file_location *) | |
318bf84f | 932 | xmrealloc (pst->objfile->md, (char *)bincl_list, |
bd5635a1 RP |
933 | bincls_allocated * sizeof (struct header_file_location)); |
934 | next_bincl = bincl_list + offset; | |
935 | } | |
936 | next_bincl->pst = pst; | |
937 | next_bincl->instance = instance; | |
938 | next_bincl++->name = name; | |
939 | } | |
940 | ||
941 | /* Given a name, value pair, find the corresponding | |
942 | bincl in the list. Return the partial symtab associated | |
943 | with that header_file_location. */ | |
944 | ||
9bba3334 | 945 | static struct partial_symtab * |
bd5635a1 RP |
946 | find_corresponding_bincl_psymtab (name, instance) |
947 | char *name; | |
948 | int instance; | |
949 | { | |
950 | struct header_file_location *bincl; | |
951 | ||
952 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
953 | if (bincl->instance == instance | |
2e4964ad | 954 | && STREQ (name, bincl->name)) |
bd5635a1 RP |
955 | return bincl->pst; |
956 | ||
26a859ec | 957 | complain (&repeated_header_complaint, name, symnum); |
bd5635a1 RP |
958 | return (struct partial_symtab *) 0; |
959 | } | |
960 | ||
961 | /* Free the storage allocated for the bincl list. */ | |
962 | ||
963 | static void | |
021959e2 JG |
964 | free_bincl_list (objfile) |
965 | struct objfile *objfile; | |
bd5635a1 | 966 | { |
ac88ca20 | 967 | mfree (objfile -> md, (PTR)bincl_list); |
bd5635a1 RP |
968 | bincls_allocated = 0; |
969 | } | |
970 | ||
5801f348 JK |
971 | /* Scan a SunOs dynamic symbol table for symbols of interest and |
972 | add them to the minimal symbol table. */ | |
973 | ||
974 | static void | |
975 | read_dbx_dynamic_symtab (section_offsets, objfile) | |
976 | struct section_offsets *section_offsets; | |
977 | struct objfile *objfile; | |
978 | { | |
979 | bfd *abfd = objfile->obfd; | |
192b64e7 | 980 | struct cleanup *back_to; |
5801f348 | 981 | int counter; |
192b64e7 ILT |
982 | long dynsym_size; |
983 | long dynsym_count; | |
984 | asymbol **dynsyms; | |
985 | asymbol **symptr; | |
986 | arelent **relptr; | |
987 | long dynrel_size; | |
988 | long dynrel_count; | |
989 | arelent **dynrels; | |
5801f348 | 990 | CORE_ADDR sym_value; |
f69ecb9c | 991 | char *name; |
5801f348 JK |
992 | |
993 | /* Check that the symbol file has dynamic symbols that we know about. | |
994 | bfd_arch_unknown can happen if we are reading a sun3 symbol file | |
995 | on a sun4 host (and vice versa) and bfd is not configured | |
996 | --with-target=all. This would trigger an assertion in bfd/sunos.c, | |
997 | so we ignore the dynamic symbols in this case. */ | |
998 | if (bfd_get_flavour (abfd) != bfd_target_aout_flavour | |
999 | || (bfd_get_file_flags (abfd) & DYNAMIC) == 0 | |
192b64e7 | 1000 | || bfd_get_arch (abfd) == bfd_arch_unknown) |
5801f348 JK |
1001 | return; |
1002 | ||
192b64e7 ILT |
1003 | dynsym_size = bfd_get_dynamic_symtab_upper_bound (abfd); |
1004 | if (dynsym_size < 0) | |
5801f348 JK |
1005 | return; |
1006 | ||
192b64e7 ILT |
1007 | dynsyms = (asymbol **) xmalloc (dynsym_size); |
1008 | back_to = make_cleanup (free, dynsyms); | |
1009 | ||
1010 | dynsym_count = bfd_canonicalize_dynamic_symtab (abfd, dynsyms); | |
1011 | if (dynsym_count < 0) | |
1012 | { | |
1013 | do_cleanups (back_to); | |
1014 | return; | |
1015 | } | |
1016 | ||
5801f348 JK |
1017 | /* Enter dynamic symbols into the minimal symbol table |
1018 | if this is a stripped executable. */ | |
1019 | if (bfd_get_symcount (abfd) <= 0) | |
1020 | { | |
192b64e7 ILT |
1021 | symptr = dynsyms; |
1022 | for (counter = 0; counter < dynsym_count; counter++, symptr++) | |
5801f348 | 1023 | { |
192b64e7 ILT |
1024 | asymbol *sym = *symptr; |
1025 | asection *sec; | |
1026 | int type; | |
1027 | ||
192b64e7 | 1028 | sec = bfd_get_section (sym); |
be78eb1a PS |
1029 | |
1030 | /* BFD symbols are section relative. */ | |
0683ac4b PS |
1031 | sym_value = sym->value + sec->vma; |
1032 | ||
192b64e7 | 1033 | if (bfd_get_section_flags (abfd, sec) & SEC_CODE) |
5801f348 | 1034 | { |
192b64e7 ILT |
1035 | sym_value += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
1036 | type = N_TEXT; | |
5801f348 | 1037 | } |
192b64e7 ILT |
1038 | else if (bfd_get_section_flags (abfd, sec) & SEC_DATA) |
1039 | { | |
1040 | sym_value += ANOFFSET (section_offsets, SECT_OFF_DATA); | |
1041 | type = N_DATA; | |
1042 | } | |
1043 | else if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) | |
5801f348 | 1044 | { |
192b64e7 ILT |
1045 | sym_value += ANOFFSET (section_offsets, SECT_OFF_BSS); |
1046 | type = N_BSS; | |
5801f348 JK |
1047 | } |
1048 | else | |
192b64e7 ILT |
1049 | continue; |
1050 | ||
1051 | if (sym->flags & BSF_GLOBAL) | |
1052 | type |= N_EXT; | |
1053 | ||
b9e58503 PS |
1054 | record_minimal_symbol ((char *) bfd_asymbol_name (sym), sym_value, |
1055 | type, objfile); | |
5801f348 JK |
1056 | } |
1057 | } | |
1058 | ||
1059 | /* Symbols from shared libraries have a dynamic relocation entry | |
1060 | that points to the associated slot in the procedure linkage table. | |
1061 | We make a mininal symbol table entry with type mst_solib_trampoline | |
1062 | at the address in the procedure linkage table. */ | |
192b64e7 ILT |
1063 | dynrel_size = bfd_get_dynamic_reloc_upper_bound (abfd); |
1064 | if (dynrel_size < 0) | |
1065 | { | |
1066 | do_cleanups (back_to); | |
1067 | return; | |
1068 | } | |
1069 | ||
1070 | dynrels = (arelent **) xmalloc (dynrel_size); | |
1071 | make_cleanup (free, dynrels); | |
5801f348 | 1072 | |
192b64e7 ILT |
1073 | dynrel_count = bfd_canonicalize_dynamic_reloc (abfd, dynrels, dynsyms); |
1074 | if (dynrel_count < 0) | |
1075 | { | |
1076 | do_cleanups (back_to); | |
1077 | return; | |
1078 | } | |
5801f348 | 1079 | |
192b64e7 | 1080 | for (counter = 0, relptr = dynrels; |
5801f348 | 1081 | counter < dynrel_count; |
192b64e7 | 1082 | counter++, relptr++) |
5801f348 | 1083 | { |
0683ac4b | 1084 | arelent *rel = *relptr; |
26a859ec PS |
1085 | CORE_ADDR address = |
1086 | rel->address + ANOFFSET (section_offsets, SECT_OFF_DATA); | |
5801f348 | 1087 | |
0683ac4b PS |
1088 | switch (bfd_get_arch (abfd)) |
1089 | { | |
1090 | case bfd_arch_sparc: | |
1091 | if (rel->howto->type != RELOC_JMP_SLOT) | |
1092 | continue; | |
1093 | break; | |
1094 | case bfd_arch_m68k: | |
1095 | /* `16' is the type BFD produces for a jump table relocation. */ | |
1096 | if (rel->howto->type != 16) | |
1097 | continue; | |
5801f348 | 1098 | |
0683ac4b PS |
1099 | /* Adjust address in the jump table to point to |
1100 | the start of the bsr instruction. */ | |
1101 | address -= 2; | |
1102 | break; | |
1103 | default: | |
1104 | continue; | |
1105 | } | |
5801f348 | 1106 | |
b9e58503 | 1107 | name = (char *) bfd_asymbol_name (*rel->sym_ptr_ptr); |
f69ecb9c JK |
1108 | prim_record_minimal_symbol |
1109 | (obsavestring (name, strlen (name), &objfile -> symbol_obstack), | |
1110 | address, | |
1111 | mst_solib_trampoline, | |
1112 | objfile); | |
5801f348 | 1113 | } |
192b64e7 ILT |
1114 | |
1115 | do_cleanups (back_to); | |
5801f348 JK |
1116 | } |
1117 | ||
bd5635a1 RP |
1118 | /* Given pointers to an a.out symbol table in core containing dbx |
1119 | style data, setup partial_symtab's describing each source file for | |
3624c875 FF |
1120 | which debugging information is available. |
1121 | SYMFILE_NAME is the name of the file we are reading from | |
2af231b8 JG |
1122 | and SECTION_OFFSETS is the set of offsets for the various sections |
1123 | of the file (a set of zeros if the mainline program). */ | |
bd5635a1 RP |
1124 | |
1125 | static void | |
2af231b8 JG |
1126 | read_dbx_symtab (section_offsets, objfile, text_addr, text_size) |
1127 | struct section_offsets *section_offsets; | |
7d9884b9 | 1128 | struct objfile *objfile; |
bd5635a1 RP |
1129 | CORE_ADDR text_addr; |
1130 | int text_size; | |
1131 | { | |
ac88ca20 | 1132 | register struct internal_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
bd5635a1 | 1133 | register char *namestring; |
bd5635a1 RP |
1134 | int nsl; |
1135 | int past_first_source_file = 0; | |
1136 | CORE_ADDR last_o_file_start = 0; | |
94f5a25f | 1137 | CORE_ADDR last_function_start = 0; |
0eb22669 | 1138 | struct cleanup *back_to; |
7d9884b9 | 1139 | bfd *abfd; |
bd5635a1 | 1140 | |
bd5635a1 RP |
1141 | /* Current partial symtab */ |
1142 | struct partial_symtab *pst; | |
1143 | ||
1144 | /* List of current psymtab's include files */ | |
1145 | char **psymtab_include_list; | |
1146 | int includes_allocated; | |
1147 | int includes_used; | |
1148 | ||
1149 | /* Index within current psymtab dependency list */ | |
1150 | struct partial_symtab **dependency_list; | |
1151 | int dependencies_used, dependencies_allocated; | |
1152 | ||
9342ecb9 JG |
1153 | /* FIXME. We probably want to change stringtab_global rather than add this |
1154 | while processing every symbol entry. FIXME. */ | |
1155 | file_string_table_offset = 0; | |
1156 | next_file_string_table_offset = 0; | |
1157 | ||
3624c875 | 1158 | stringtab_global = DBX_STRINGTAB (objfile); |
bd5635a1 RP |
1159 | |
1160 | pst = (struct partial_symtab *) 0; | |
1161 | ||
1162 | includes_allocated = 30; | |
1163 | includes_used = 0; | |
1164 | psymtab_include_list = (char **) alloca (includes_allocated * | |
1165 | sizeof (char *)); | |
1166 | ||
1167 | dependencies_allocated = 30; | |
1168 | dependencies_used = 0; | |
1169 | dependency_list = | |
1170 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1171 | sizeof (struct partial_symtab *)); | |
1172 | ||
bd5635a1 | 1173 | /* Init bincl list */ |
021959e2 | 1174 | init_bincl_list (20, objfile); |
0eb22669 | 1175 | back_to = make_cleanup (free_bincl_list, objfile); |
bd5635a1 | 1176 | |
3416d90b | 1177 | last_source_file = NULL; |
bd5635a1 | 1178 | |
9d2b8d50 | 1179 | lowest_text_address = (CORE_ADDR)-1; |
bd5635a1 | 1180 | |
7d9884b9 JG |
1181 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ |
1182 | abfd = objfile->obfd; | |
bd5635a1 | 1183 | symbuf_end = symbuf_idx = 0; |
aab77d5f | 1184 | next_symbol_text_func = dbx_next_symbol_text; |
bd5635a1 | 1185 | |
3624c875 | 1186 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
bd5635a1 RP |
1187 | { |
1188 | /* Get the symbol for this run and pull out some info */ | |
1189 | QUIT; /* allow this to be interruptable */ | |
1190 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1191 | fill_symbuf (abfd); |
bd5635a1 RP |
1192 | bufp = &symbuf[symbuf_idx++]; |
1193 | ||
1194 | /* | |
1195 | * Special case to speed up readin. | |
1196 | */ | |
1197 | if (bufp->n_type == (unsigned char)N_SLINE) continue; | |
1198 | ||
7d9884b9 | 1199 | SWAP_SYMBOL (bufp, abfd); |
94f5a25f | 1200 | OBJSTAT (objfile, n_stabs++); |
bd5635a1 RP |
1201 | |
1202 | /* Ok. There is a lot of code duplicated in the rest of this | |
1203 | switch statement (for efficiency reasons). Since I don't | |
1204 | like duplicating code, I will do my penance here, and | |
1205 | describe the code which is duplicated: | |
1206 | ||
1207 | *) The assignment to namestring. | |
1208 | *) The call to strchr. | |
1209 | *) The addition of a partial symbol the the two partial | |
1210 | symbol lists. This last is a large section of code, so | |
1211 | I've imbedded it in the following macro. | |
1212 | */ | |
1213 | ||
1214 | /* Set namestring based on bufp. If the string table index is invalid, | |
1215 | give a fake name, and print a single error message per symbol file read, | |
1216 | rather than abort the symbol reading or flood the user with messages. */ | |
9342ecb9 JG |
1217 | |
1218 | /*FIXME: Too many adds and indirections in here for the inner loop. */ | |
bd5635a1 | 1219 | #define SET_NAMESTRING()\ |
9342ecb9 JG |
1220 | if (((unsigned)bufp->n_strx + file_string_table_offset) >= \ |
1221 | DBX_STRINGTAB_SIZE (objfile)) { \ | |
51b80b00 | 1222 | complain (&string_table_offset_complaint, symnum); \ |
5801f348 | 1223 | namestring = "<bad string table offset>"; \ |
bd5635a1 | 1224 | } else \ |
9342ecb9 JG |
1225 | namestring = bufp->n_strx + file_string_table_offset + \ |
1226 | DBX_STRINGTAB (objfile) | |
bd5635a1 | 1227 | |
7e258d18 PB |
1228 | #define CUR_SYMBOL_TYPE bufp->n_type |
1229 | #define CUR_SYMBOL_VALUE bufp->n_value | |
1230 | #define DBXREAD_ONLY | |
2af231b8 JG |
1231 | #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\ |
1232 | start_psymtab(ofile, secoff, fname, low, symoff, global_syms, static_syms) | |
7e258d18 PB |
1233 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)\ |
1234 | end_psymtab(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) | |
aab77d5f | 1235 | |
7e258d18 | 1236 | #include "partial-stab.h" |
bd5635a1 RP |
1237 | } |
1238 | ||
1239 | /* If there's stuff to be cleaned up, clean it up. */ | |
3624c875 | 1240 | if (DBX_SYMCOUNT (objfile) > 0 /* We have some syms */ |
9342ecb9 JG |
1241 | /*FIXME, does this have a bug at start address 0? */ |
1242 | && last_o_file_start | |
3624c875 FF |
1243 | && objfile -> ei.entry_point < bufp->n_value |
1244 | && objfile -> ei.entry_point >= last_o_file_start) | |
bd5635a1 | 1245 | { |
3624c875 FF |
1246 | objfile -> ei.entry_file_lowpc = last_o_file_start; |
1247 | objfile -> ei.entry_file_highpc = bufp->n_value; | |
bd5635a1 RP |
1248 | } |
1249 | ||
1250 | if (pst) | |
1251 | { | |
1252 | end_psymtab (pst, psymtab_include_list, includes_used, | |
9d2b8d50 JK |
1253 | symnum * symbol_size, |
1254 | (lowest_text_address == (CORE_ADDR)-1 | |
2fe3b329 PS |
1255 | ? (text_addr + section_offsets->offsets[SECT_OFF_TEXT]) |
1256 | : lowest_text_address) | |
9d2b8d50 | 1257 | + text_size, |
7e258d18 | 1258 | dependency_list, dependencies_used); |
bd5635a1 RP |
1259 | } |
1260 | ||
0eb22669 | 1261 | do_cleanups (back_to); |
bd5635a1 RP |
1262 | } |
1263 | ||
4a35d6e9 FF |
1264 | /* Allocate and partially fill a partial symtab. It will be |
1265 | completely filled at the end of the symbol list. | |
1266 | ||
1267 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1268 | is the address relative to which its symbols are (incremental) or 0 | |
1269 | (normal). */ | |
1270 | ||
bd5635a1 | 1271 | |
7e258d18 | 1272 | struct partial_symtab * |
2af231b8 | 1273 | start_psymtab (objfile, section_offsets, |
bd5635a1 | 1274 | filename, textlow, ldsymoff, global_syms, static_syms) |
7d9884b9 | 1275 | struct objfile *objfile; |
2af231b8 | 1276 | struct section_offsets *section_offsets; |
bd5635a1 RP |
1277 | char *filename; |
1278 | CORE_ADDR textlow; | |
1279 | int ldsymoff; | |
94f5a25f DP |
1280 | struct partial_symbol **global_syms; |
1281 | struct partial_symbol **static_syms; | |
bd5635a1 RP |
1282 | { |
1283 | struct partial_symtab *result = | |
2af231b8 | 1284 | start_psymtab_common(objfile, section_offsets, |
021959e2 | 1285 | filename, textlow, global_syms, static_syms); |
bd5635a1 | 1286 | |
021959e2 JG |
1287 | result->read_symtab_private = (char *) |
1288 | obstack_alloc (&objfile -> psymbol_obstack, sizeof (struct symloc)); | |
1289 | LDSYMOFF(result) = ldsymoff; | |
bd5635a1 | 1290 | result->read_symtab = dbx_psymtab_to_symtab; |
9342ecb9 JG |
1291 | SYMBOL_SIZE(result) = symbol_size; |
1292 | SYMBOL_OFFSET(result) = symbol_table_offset; | |
1293 | STRING_OFFSET(result) = string_table_offset; | |
1294 | FILE_STRING_OFFSET(result) = file_string_table_offset; | |
bd5635a1 | 1295 | |
2af231b8 JG |
1296 | /* If we're handling an ELF file, drag some section-relocation info |
1297 | for this source file out of the ELF symbol table, to compensate for | |
1298 | Sun brain death. This replaces the section_offsets in this psymtab, | |
1299 | if successful. */ | |
1300 | elfstab_offset_sections (objfile, result); | |
1301 | ||
2e4964ad FF |
1302 | /* Deduce the source language from the filename for this psymtab. */ |
1303 | psymtab_language = deduce_language_from_filename (filename); | |
1304 | ||
bd5635a1 RP |
1305 | return result; |
1306 | } | |
1307 | ||
cbba020f PS |
1308 | /* Close off the current usage of PST. |
1309 | Returns PST or NULL if the partial symtab was empty and thrown away. | |
bd5635a1 | 1310 | |
cbba020f | 1311 | FIXME: List variables and peculiarities of same. */ |
bd5635a1 | 1312 | |
cbba020f | 1313 | struct partial_symtab * |
bd5635a1 | 1314 | end_psymtab (pst, include_list, num_includes, capping_symbol_offset, |
7e258d18 | 1315 | capping_text, dependency_list, number_dependencies) |
bd5635a1 RP |
1316 | struct partial_symtab *pst; |
1317 | char **include_list; | |
1318 | int num_includes; | |
1319 | int capping_symbol_offset; | |
1320 | CORE_ADDR capping_text; | |
1321 | struct partial_symtab **dependency_list; | |
1322 | int number_dependencies; | |
bd5635a1 RP |
1323 | { |
1324 | int i; | |
021959e2 | 1325 | struct objfile *objfile = pst -> objfile; |
bd5635a1 | 1326 | |
7e258d18 PB |
1327 | if (capping_symbol_offset != -1) |
1328 | LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst); | |
bd5635a1 RP |
1329 | pst->texthigh = capping_text; |
1330 | ||
b9e58503 | 1331 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
9342ecb9 JG |
1332 | /* Under Solaris, the N_SO symbols always have a value of 0, |
1333 | instead of the usual address of the .o file. Therefore, | |
1334 | we have to do some tricks to fill in texthigh and textlow. | |
1335 | The first trick is in partial-stab.h: if we see a static | |
1336 | or global function, and the textlow for the current pst | |
1337 | is still 0, then we use that function's address for | |
b9e58503 | 1338 | the textlow of the pst. */ |
9342ecb9 | 1339 | |
b9e58503 | 1340 | /* Now, to fill in texthigh, we remember the last function seen |
9342ecb9 JG |
1341 | in the .o file (also in partial-stab.h). Also, there's a hack in |
1342 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field | |
1343 | to here via the misc_info field. Therefore, we can fill in | |
1344 | a reliable texthigh by taking the address plus size of the | |
b9e58503 | 1345 | last function in the file. */ |
9342ecb9 | 1346 | |
bcbf9559 | 1347 | if (pst->texthigh == 0 && last_function_name) { |
9342ecb9 JG |
1348 | char *p; |
1349 | int n; | |
1350 | struct minimal_symbol *minsym; | |
1351 | ||
1352 | p = strchr (last_function_name, ':'); | |
1353 | if (p == NULL) | |
1354 | p = last_function_name; | |
1355 | n = p - last_function_name; | |
1356 | p = alloca (n + 1); | |
1357 | strncpy (p, last_function_name, n); | |
1358 | p[n] = 0; | |
1359 | ||
b9e58503 | 1360 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
9342ecb9 | 1361 | |
b9e58503 | 1362 | if (minsym) |
2e4964ad | 1363 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + |
5573d7d4 | 1364 | (long) MSYMBOL_INFO (minsym); |
b9e58503 | 1365 | |
9342ecb9 JG |
1366 | last_function_name = NULL; |
1367 | } | |
1368 | ||
1369 | /* this test will be true if the last .o file is only data */ | |
1370 | if (pst->textlow == 0) | |
6545c6a0 JK |
1371 | /* This loses if the text section really starts at address zero |
1372 | (generally true when we are debugging a .o file, for example). | |
b9e58503 | 1373 | That is why this whole thing is inside SOFUN_ADDRESS_MAYBE_MISSING. */ |
9342ecb9 JG |
1374 | pst->textlow = pst->texthigh; |
1375 | ||
bcbf9559 JG |
1376 | /* If we know our own starting text address, then walk through all other |
1377 | psymtabs for this objfile, and if any didn't know their ending text | |
1378 | address, set it to our starting address. Take care to not set our | |
1379 | own ending address to our starting address, nor to set addresses on | |
1380 | `dependency' files that have both textlow and texthigh zero. */ | |
9342ecb9 | 1381 | if (pst->textlow) { |
bfe2f12b JL |
1382 | struct partial_symtab *p1; |
1383 | ||
9342ecb9 | 1384 | ALL_OBJFILE_PSYMTABS (objfile, p1) { |
bcbf9559 | 1385 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) { |
9342ecb9 JG |
1386 | p1->texthigh = pst->textlow; |
1387 | /* if this file has only data, then make textlow match texthigh */ | |
1388 | if (p1->textlow == 0) | |
1389 | p1->textlow = p1->texthigh; | |
1390 | } | |
1391 | } | |
1392 | } | |
1393 | ||
1394 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
b9e58503 | 1395 | #endif /* SOFUN_ADDRESS_MAYBE_MISSING. */ |
9342ecb9 | 1396 | |
bd5635a1 | 1397 | pst->n_global_syms = |
021959e2 | 1398 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); |
bd5635a1 | 1399 | pst->n_static_syms = |
021959e2 | 1400 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); |
bd5635a1 RP |
1401 | |
1402 | pst->number_of_dependencies = number_dependencies; | |
1403 | if (number_dependencies) | |
1404 | { | |
1405 | pst->dependencies = (struct partial_symtab **) | |
021959e2 | 1406 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 | 1407 | number_dependencies * sizeof (struct partial_symtab *)); |
7e258d18 | 1408 | memcpy (pst->dependencies, dependency_list, |
bd5635a1 RP |
1409 | number_dependencies * sizeof (struct partial_symtab *)); |
1410 | } | |
1411 | else | |
1412 | pst->dependencies = 0; | |
1413 | ||
1414 | for (i = 0; i < num_includes; i++) | |
1415 | { | |
bd5635a1 | 1416 | struct partial_symtab *subpst = |
021959e2 | 1417 | allocate_psymtab (include_list[i], objfile); |
7d9884b9 | 1418 | |
2af231b8 | 1419 | subpst->section_offsets = pst->section_offsets; |
021959e2 JG |
1420 | subpst->read_symtab_private = |
1421 | (char *) obstack_alloc (&objfile->psymbol_obstack, | |
1422 | sizeof (struct symloc)); | |
4a35d6e9 FF |
1423 | LDSYMOFF(subpst) = |
1424 | LDSYMLEN(subpst) = | |
bd5635a1 RP |
1425 | subpst->textlow = |
1426 | subpst->texthigh = 0; | |
1427 | ||
3f83182d JG |
1428 | /* We could save slight bits of space by only making one of these, |
1429 | shared by the entire set of include files. FIXME-someday. */ | |
bd5635a1 | 1430 | subpst->dependencies = (struct partial_symtab **) |
021959e2 | 1431 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 RP |
1432 | sizeof (struct partial_symtab *)); |
1433 | subpst->dependencies[0] = pst; | |
1434 | subpst->number_of_dependencies = 1; | |
1435 | ||
1436 | subpst->globals_offset = | |
1437 | subpst->n_global_syms = | |
1438 | subpst->statics_offset = | |
1439 | subpst->n_static_syms = 0; | |
1440 | ||
1441 | subpst->readin = 0; | |
9a822037 | 1442 | subpst->symtab = 0; |
2707b48a | 1443 | subpst->read_symtab = pst->read_symtab; |
bd5635a1 RP |
1444 | } |
1445 | ||
021959e2 | 1446 | sort_pst_symbols (pst); |
bd5635a1 | 1447 | |
f9623881 JG |
1448 | /* If there is already a psymtab or symtab for a file of this name, remove it. |
1449 | (If there is a symtab, more drastic things also happen.) | |
1450 | This happens in VxWorks. */ | |
1451 | free_named_symtabs (pst->filename); | |
1452 | ||
7d9884b9 | 1453 | if (num_includes == 0 |
5801f348 JK |
1454 | && number_dependencies == 0 |
1455 | && pst->n_global_syms == 0 | |
1456 | && pst->n_static_syms == 0) | |
1457 | { | |
1458 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
1459 | it is on the obstack, but we can forget to chain it on the list. */ | |
1460 | /* Empty psymtabs happen as a result of header files which don't have | |
1461 | any symbols in them. There can be a lot of them. But this check | |
1462 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
1463 | is not empty, but we don't realize that. Fixing that without slowing | |
1464 | things down might be tricky. */ | |
1465 | struct partial_symtab *prev_pst; | |
1466 | ||
1467 | /* First, snip it out of the psymtab chain */ | |
1468 | ||
1469 | if (pst->objfile->psymtabs == pst) | |
1470 | pst->objfile->psymtabs = pst->next; | |
1471 | else | |
1472 | for (prev_pst = pst->objfile->psymtabs; prev_pst; prev_pst = pst->next) | |
1473 | if (prev_pst->next == pst) | |
1474 | prev_pst->next = pst->next; | |
318bf84f | 1475 | |
5801f348 | 1476 | /* Next, put it on a free list for recycling */ |
318bf84f | 1477 | |
5801f348 JK |
1478 | pst->next = pst->objfile->free_psymtabs; |
1479 | pst->objfile->free_psymtabs = pst; | |
cbba020f | 1480 | |
5801f348 JK |
1481 | /* Indicate that psymtab was thrown away. */ |
1482 | pst = (struct partial_symtab *)NULL; | |
1483 | } | |
cbba020f | 1484 | return pst; |
bd5635a1 RP |
1485 | } |
1486 | \f | |
1487 | static void | |
4c07f28d | 1488 | dbx_psymtab_to_symtab_1 (pst) |
bd5635a1 | 1489 | struct partial_symtab *pst; |
bd5635a1 RP |
1490 | { |
1491 | struct cleanup *old_chain; | |
1492 | int i; | |
1493 | ||
1494 | if (!pst) | |
1495 | return; | |
1496 | ||
1497 | if (pst->readin) | |
1498 | { | |
199b2450 | 1499 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
bd5635a1 RP |
1500 | pst->filename); |
1501 | return; | |
1502 | } | |
1503 | ||
afe4ca15 | 1504 | /* Read in all partial symtabs on which this one is dependent */ |
bd5635a1 RP |
1505 | for (i = 0; i < pst->number_of_dependencies; i++) |
1506 | if (!pst->dependencies[i]->readin) | |
1507 | { | |
1508 | /* Inform about additional files that need to be read in. */ | |
1509 | if (info_verbose) | |
1510 | { | |
199b2450 | 1511 | fputs_filtered (" ", gdb_stdout); |
bd5635a1 | 1512 | wrap_here (""); |
199b2450 | 1513 | fputs_filtered ("and ", gdb_stdout); |
bd5635a1 RP |
1514 | wrap_here (""); |
1515 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
1516 | wrap_here (""); /* Flush output */ | |
199b2450 | 1517 | gdb_flush (gdb_stdout); |
bd5635a1 | 1518 | } |
4c07f28d | 1519 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); |
bd5635a1 RP |
1520 | } |
1521 | ||
4a35d6e9 | 1522 | if (LDSYMLEN(pst)) /* Otherwise it's a dummy */ |
bd5635a1 RP |
1523 | { |
1524 | /* Init stuff necessary for reading in symbols */ | |
3416d90b | 1525 | stabsread_init (); |
c0302457 | 1526 | buildsym_init (); |
bd5635a1 | 1527 | old_chain = make_cleanup (really_free_pendings, 0); |
9342ecb9 | 1528 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
4c07f28d FF |
1529 | symbol_size = SYMBOL_SIZE (pst); |
1530 | ||
1531 | /* Read in this file's symbols */ | |
2c7ab4ca | 1532 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); |
574dac8e | 1533 | read_ofile_symtab (pst); |
9404978d | 1534 | sort_symtab_syms (pst->symtab); |
bd5635a1 RP |
1535 | |
1536 | do_cleanups (old_chain); | |
1537 | } | |
1538 | ||
1539 | pst->readin = 1; | |
1540 | } | |
1541 | ||
ac88ca20 JG |
1542 | /* Read in all of the symbols for a given psymtab for real. |
1543 | Be verbose about it if the user wants that. */ | |
1544 | ||
bd5635a1 RP |
1545 | static void |
1546 | dbx_psymtab_to_symtab (pst) | |
1547 | struct partial_symtab *pst; | |
1548 | { | |
bd5635a1 | 1549 | bfd *sym_bfd; |
bd5635a1 RP |
1550 | |
1551 | if (!pst) | |
1552 | return; | |
1553 | ||
1554 | if (pst->readin) | |
1555 | { | |
199b2450 | 1556 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
bd5635a1 RP |
1557 | pst->filename); |
1558 | return; | |
1559 | } | |
1560 | ||
4a35d6e9 | 1561 | if (LDSYMLEN(pst) || pst->number_of_dependencies) |
bd5635a1 RP |
1562 | { |
1563 | /* Print the message now, before reading the string table, | |
1564 | to avoid disconcerting pauses. */ | |
1565 | if (info_verbose) | |
1566 | { | |
1567 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
199b2450 | 1568 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
1569 | } |
1570 | ||
7d9884b9 | 1571 | sym_bfd = pst->objfile->obfd; |
bd5635a1 | 1572 | |
aab77d5f PB |
1573 | next_symbol_text_func = dbx_next_symbol_text; |
1574 | ||
4c07f28d | 1575 | dbx_psymtab_to_symtab_1 (pst); |
bd5635a1 RP |
1576 | |
1577 | /* Match with global symbols. This only needs to be done once, | |
1578 | after all of the symtabs and dependencies have been read in. */ | |
021959e2 | 1579 | scan_file_globals (pst->objfile); |
bd5635a1 | 1580 | |
bd5635a1 RP |
1581 | /* Finish up the debug error message. */ |
1582 | if (info_verbose) | |
1583 | printf_filtered ("done.\n"); | |
1584 | } | |
1585 | } | |
1586 | ||
574dac8e | 1587 | /* Read in a defined section of a specific object file's symbols. */ |
9342ecb9 | 1588 | |
574dac8e JK |
1589 | static void |
1590 | read_ofile_symtab (pst) | |
1591 | struct partial_symtab *pst; | |
bd5635a1 RP |
1592 | { |
1593 | register char *namestring; | |
7d9884b9 | 1594 | register struct internal_nlist *bufp; |
bd5635a1 | 1595 | unsigned char type; |
afe4ca15 | 1596 | unsigned max_symnum; |
7d9884b9 | 1597 | register bfd *abfd; |
574dac8e JK |
1598 | struct objfile *objfile; |
1599 | int sym_offset; /* Offset to start of symbols to read */ | |
1600 | int sym_size; /* Size of symbols to read */ | |
1601 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
1602 | int text_size; /* Size of text segment for symbols */ | |
1603 | struct section_offsets *section_offsets; | |
1604 | ||
1605 | objfile = pst->objfile; | |
1606 | sym_offset = LDSYMOFF(pst); | |
1607 | sym_size = LDSYMLEN(pst); | |
1608 | text_offset = pst->textlow; | |
1609 | text_size = pst->texthigh - pst->textlow; | |
1610 | section_offsets = pst->section_offsets; | |
7d9884b9 | 1611 | |
021959e2 | 1612 | current_objfile = objfile; |
3416d90b | 1613 | subfile_stack = NULL; |
bd5635a1 | 1614 | |
3624c875 | 1615 | stringtab_global = DBX_STRINGTAB (objfile); |
3416d90b | 1616 | last_source_file = NULL; |
bd5635a1 | 1617 | |
7d9884b9 JG |
1618 | abfd = objfile->obfd; |
1619 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ | |
bd5635a1 RP |
1620 | symbuf_end = symbuf_idx = 0; |
1621 | ||
1622 | /* It is necessary to actually read one symbol *before* the start | |
1623 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
1624 | occurs before the N_SO symbol. | |
1625 | ||
1626 | Detecting this in read_dbx_symtab | |
1627 | would slow down initial readin, so we look for it here instead. */ | |
9342ecb9 | 1628 | if (!processing_acc_compilation && sym_offset >= (int)symbol_size) |
bd5635a1 | 1629 | { |
2c7ab4ca | 1630 | bfd_seek (symfile_bfd, sym_offset - symbol_size, SEEK_CUR); |
7d9884b9 | 1631 | fill_symbuf (abfd); |
bd5635a1 | 1632 | bufp = &symbuf[symbuf_idx++]; |
7d9884b9 | 1633 | SWAP_SYMBOL (bufp, abfd); |
94f5a25f | 1634 | OBJSTAT (objfile, n_stabs++); |
bd5635a1 | 1635 | |
afe4ca15 | 1636 | SET_NAMESTRING (); |
bd5635a1 | 1637 | |
1aed6766 SG |
1638 | processing_gcc_compilation = 0; |
1639 | if (bufp->n_type == N_TEXT) | |
1640 | { | |
db2302cb PS |
1641 | const char *tempstring = namestring; |
1642 | ||
2e4964ad | 1643 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1644 | processing_gcc_compilation = 1; |
2e4964ad | 1645 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1646 | processing_gcc_compilation = 2; |
db2302cb PS |
1647 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) |
1648 | ++tempstring; | |
1649 | if (STREQN (tempstring, "__gnu_compiled", 14)) | |
1650 | processing_gcc_compilation = 2; | |
1aed6766 | 1651 | } |
3416d90b FF |
1652 | |
1653 | /* Try to select a C++ demangling based on the compilation unit | |
1654 | producer. */ | |
1655 | ||
1656 | if (processing_gcc_compilation) | |
1657 | { | |
1aed6766 | 1658 | if (AUTO_DEMANGLING) |
3416d90b FF |
1659 | { |
1660 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1661 | } | |
3416d90b | 1662 | } |
bd5635a1 RP |
1663 | } |
1664 | else | |
1665 | { | |
1666 | /* The N_SO starting this symtab is the first symbol, so we | |
1667 | better not check the symbol before it. I'm not this can | |
1668 | happen, but it doesn't hurt to check for it. */ | |
2c7ab4ca | 1669 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); |
bd5635a1 RP |
1670 | processing_gcc_compilation = 0; |
1671 | } | |
1672 | ||
1673 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1674 | fill_symbuf (abfd); |
bd5635a1 RP |
1675 | bufp = &symbuf[symbuf_idx]; |
1676 | if (bufp->n_type != (unsigned char)N_SO) | |
1677 | error("First symbol in segment of executable not a source symbol"); | |
1678 | ||
afe4ca15 JG |
1679 | max_symnum = sym_size / symbol_size; |
1680 | ||
bd5635a1 | 1681 | for (symnum = 0; |
afe4ca15 | 1682 | symnum < max_symnum; |
bd5635a1 RP |
1683 | symnum++) |
1684 | { | |
1685 | QUIT; /* Allow this to be interruptable */ | |
1686 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1687 | fill_symbuf(abfd); |
bd5635a1 | 1688 | bufp = &symbuf[symbuf_idx++]; |
7d9884b9 | 1689 | SWAP_SYMBOL (bufp, abfd); |
94f5a25f | 1690 | OBJSTAT (objfile, n_stabs++); |
bd5635a1 | 1691 | |
c0302457 | 1692 | type = bufp->n_type; |
bd5635a1 | 1693 | |
afe4ca15 | 1694 | SET_NAMESTRING (); |
bd5635a1 | 1695 | |
7d9884b9 | 1696 | if (type & N_STAB) { |
c55e6167 | 1697 | process_one_symbol (type, bufp->n_desc, bufp->n_value, |
2af231b8 | 1698 | namestring, section_offsets, objfile); |
7d9884b9 | 1699 | } |
bd5635a1 RP |
1700 | /* We skip checking for a new .o or -l file; that should never |
1701 | happen in this routine. */ | |
1aed6766 | 1702 | else if (type == N_TEXT) |
3416d90b FF |
1703 | { |
1704 | /* I don't think this code will ever be executed, because | |
1705 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
1706 | the N_SO symbol which starts this source file. | |
1707 | However, there is no reason not to accept | |
1708 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
1aed6766 | 1709 | |
2e4964ad | 1710 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1711 | processing_gcc_compilation = 1; |
2e4964ad | 1712 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 SG |
1713 | processing_gcc_compilation = 2; |
1714 | ||
1aed6766 | 1715 | if (AUTO_DEMANGLING) |
3416d90b FF |
1716 | { |
1717 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1718 | } | |
3416d90b | 1719 | } |
bd5635a1 RP |
1720 | else if (type & N_EXT || type == (unsigned char)N_TEXT |
1721 | || type == (unsigned char)N_NBTEXT | |
0c4d2cc2 | 1722 | ) { |
bd5635a1 RP |
1723 | /* Global symbol: see if we came across a dbx defintion for |
1724 | a corresponding symbol. If so, store the value. Remove | |
1725 | syms from the chain when their values are stored, but | |
1726 | search the whole chain, as there may be several syms from | |
1727 | different files with the same name. */ | |
1728 | /* This is probably not true. Since the files will be read | |
1729 | in one at a time, each reference to a global symbol will | |
1730 | be satisfied in each file as it appears. So we skip this | |
1731 | section. */ | |
1732 | ; | |
0c4d2cc2 | 1733 | } |
bd5635a1 | 1734 | } |
9404978d | 1735 | |
021959e2 | 1736 | current_objfile = NULL; |
9342ecb9 JG |
1737 | |
1738 | /* In a Solaris elf file, this variable, which comes from the | |
1739 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
1740 | which comes from pst->textlow is correct. */ | |
1741 | if (last_source_start_addr == 0) | |
1742 | last_source_start_addr = text_offset; | |
1743 | ||
94f5a25f DP |
1744 | /* In reordered executables last_source_start_addr may not be the |
1745 | lower bound for this symtab, instead use text_offset which comes | |
1746 | from pst->textlow which is correct. */ | |
1747 | if (last_source_start_addr > text_offset) | |
1748 | last_source_start_addr = text_offset; | |
1749 | ||
1750 | pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT); | |
1751 | ||
1752 | if (ARM_DEMANGLING) /* process incomplete C++ types now */ | |
1753 | process_now(objfile); | |
1754 | ||
3416d90b | 1755 | end_stabs (); |
bd5635a1 | 1756 | } |
574dac8e | 1757 | |
bd5635a1 | 1758 | \f |
c55e6167 JG |
1759 | /* This handles a single symbol from the symbol-file, building symbols |
1760 | into a GDB symtab. It takes these arguments and an implicit argument. | |
1761 | ||
1762 | TYPE is the type field of the ".stab" symbol entry. | |
1763 | DESC is the desc field of the ".stab" entry. | |
1764 | VALU is the value field of the ".stab" entry. | |
1765 | NAME is the symbol name, in our address space. | |
2af231b8 JG |
1766 | SECTION_OFFSETS is a set of amounts by which the sections of this object |
1767 | file were relocated when it was loaded into memory. | |
1768 | All symbols that refer | |
1769 | to memory locations need to be offset by these amounts. | |
9342ecb9 | 1770 | OBJFILE is the object file from which we are reading symbols. |
c55e6167 JG |
1771 | It is used in end_symtab. */ |
1772 | ||
7e258d18 | 1773 | void |
2af231b8 | 1774 | process_one_symbol (type, desc, valu, name, section_offsets, objfile) |
bd5635a1 RP |
1775 | int type, desc; |
1776 | CORE_ADDR valu; | |
1777 | char *name; | |
2af231b8 | 1778 | struct section_offsets *section_offsets; |
9342ecb9 | 1779 | struct objfile *objfile; |
bd5635a1 | 1780 | { |
a5e6391b JK |
1781 | #ifdef SUN_FIXED_LBRAC_BUG |
1782 | /* If SUN_FIXED_LBRAC_BUG is defined, then it tells us whether we need | |
1783 | to correct the address of N_LBRAC's. If it is not defined, then | |
1784 | we never need to correct the addresses. */ | |
1785 | ||
0cf9329b | 1786 | /* This records the last pc address we've seen. We depend on there being |
bd5635a1 RP |
1787 | an SLINE or FUN or SO before the first LBRAC, since the variable does |
1788 | not get reset in between reads of different symbol files. */ | |
1789 | static CORE_ADDR last_pc_address; | |
a5e6391b | 1790 | #endif |
8357834f | 1791 | |
bd5635a1 | 1792 | register struct context_stack *new; |
9342ecb9 JG |
1793 | /* This remembers the address of the start of a function. It is used |
1794 | because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries are | |
1795 | relative to the current function's start address. On systems | |
2af231b8 JG |
1796 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, and is |
1797 | used to relocate these symbol types rather than SECTION_OFFSETS. */ | |
9342ecb9 | 1798 | static CORE_ADDR function_start_offset; |
bd5635a1 | 1799 | |
8357834f | 1800 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this source |
b8ec9a79 | 1801 | file. Used to detect the SunPRO solaris compiler. */ |
4d57c599 | 1802 | static int n_opt_found; |
8357834f | 1803 | |
b8ec9a79 JK |
1804 | /* The stab type used for the definition of the last function. |
1805 | N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */ | |
1806 | static int function_stab_type = 0; | |
1807 | ||
574dac8e JK |
1808 | if (!block_address_function_relative) |
1809 | /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the | |
1810 | function start address, so just use the text offset. */ | |
1811 | function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
51b80b00 | 1812 | |
bd5635a1 RP |
1813 | /* Something is wrong if we see real data before |
1814 | seeing a source file name. */ | |
1815 | ||
3416d90b | 1816 | if (last_source_file == NULL && type != (unsigned char)N_SO) |
bd5635a1 | 1817 | { |
a5e6391b JK |
1818 | /* Ignore any symbols which appear before an N_SO symbol. Currently |
1819 | no one puts symbols there, but we should deal gracefully with the | |
1820 | case. A complain()t might be in order (if !IGNORE_SYMBOL (type)), | |
1821 | but this should not be an error (). */ | |
1822 | return; | |
bd5635a1 RP |
1823 | } |
1824 | ||
1825 | switch (type) | |
1826 | { | |
1827 | case N_FUN: | |
1828 | case N_FNAME: | |
94f5a25f DP |
1829 | |
1830 | if (! strcmp (name, "")) | |
1831 | { | |
1832 | /* This N_FUN marks the end of a function. This closes off the | |
1833 | current block. */ | |
1834 | within_function = 0; | |
1835 | new = pop_context (); | |
1836 | ||
1837 | /* Make a block for the local symbols within. */ | |
1838 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1839 | function_start_offset, function_start_offset + valu, | |
1840 | objfile); | |
1841 | break; | |
1842 | } | |
1843 | ||
2af231b8 JG |
1844 | /* Relocate for dynamic loading */ |
1845 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
b8ec9a79 | 1846 | goto define_a_symbol; |
bd5635a1 | 1847 | |
bd5635a1 RP |
1848 | case N_LBRAC: |
1849 | /* This "symbol" just indicates the start of an inner lexical | |
1850 | context within a function. */ | |
1851 | ||
b9e58503 PS |
1852 | /* Ignore extra outermost context from SunPRO cc and acc. */ |
1853 | if (n_opt_found && desc == 1) | |
1854 | break; | |
1855 | ||
574dac8e JK |
1856 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1857 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1858 | valu += function_start_offset; |
c55e6167 | 1859 | #else |
574dac8e JK |
1860 | if (block_address_function_relative) |
1861 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1862 | valu += function_start_offset; | |
1863 | else | |
1864 | /* On most machines, the block addresses are relative to the | |
1865 | N_SO, the linker did not relocate them (sigh). */ | |
1866 | valu += last_source_start_addr; | |
bd5635a1 RP |
1867 | #endif |
1868 | ||
a5e6391b | 1869 | #ifdef SUN_FIXED_LBRAC_BUG |
8357834f | 1870 | if (!SUN_FIXED_LBRAC_BUG && valu < last_pc_address) { |
bd5635a1 | 1871 | /* Patch current LBRAC pc value to match last handy pc value */ |
51b80b00 | 1872 | complain (&lbrac_complaint); |
bd5635a1 RP |
1873 | valu = last_pc_address; |
1874 | } | |
a5e6391b | 1875 | #endif |
7d9884b9 | 1876 | new = push_context (desc, valu); |
bd5635a1 RP |
1877 | break; |
1878 | ||
1879 | case N_RBRAC: | |
1880 | /* This "symbol" just indicates the end of an inner lexical | |
1881 | context that was started with N_LBRAC. */ | |
1882 | ||
b9e58503 PS |
1883 | /* Ignore extra outermost context from SunPRO cc and acc. */ |
1884 | if (n_opt_found && desc == 1) | |
1885 | break; | |
1886 | ||
574dac8e JK |
1887 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1888 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1889 | valu += function_start_offset; |
c55e6167 | 1890 | #else |
574dac8e JK |
1891 | if (block_address_function_relative) |
1892 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1893 | valu += function_start_offset; | |
1894 | else | |
1895 | /* On most machines, the block addresses are relative to the | |
1896 | N_SO, the linker did not relocate them (sigh). */ | |
1897 | valu += last_source_start_addr; | |
bd5635a1 RP |
1898 | #endif |
1899 | ||
7d9884b9 | 1900 | new = pop_context(); |
bd5635a1 | 1901 | if (desc != new->depth) |
51b80b00 | 1902 | complain (&lbrac_mismatch_complaint, symnum); |
bd5635a1 RP |
1903 | |
1904 | /* Some compilers put the variable decls inside of an | |
1905 | LBRAC/RBRAC block. This macro should be nonzero if this | |
1906 | is true. DESC is N_DESC from the N_RBRAC symbol. | |
0cf9329b PB |
1907 | GCC_P is true if we've detected the GCC_COMPILED_SYMBOL |
1908 | or the GCC2_COMPILED_SYMBOL. */ | |
bd5635a1 RP |
1909 | #if !defined (VARIABLES_INSIDE_BLOCK) |
1910 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 0 | |
1911 | #endif | |
1912 | ||
1913 | /* Can only use new->locals as local symbols here if we're in | |
1914 | gcc or on a machine that puts them before the lbrack. */ | |
1915 | if (!VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
1916 | local_symbols = new->locals; | |
1917 | ||
2f8c3639 JL |
1918 | if (context_stack_depth |
1919 | > !VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
bd5635a1 | 1920 | { |
2f8c3639 JL |
1921 | /* This is not the outermost LBRAC...RBRAC pair in the function, |
1922 | its local symbols preceded it, and are the ones just recovered | |
1923 | from the context stack. Define the block for them (but don't | |
1924 | bother if the block contains no symbols. Should we complain | |
1925 | on blocks without symbols? I can't think of any useful purpose | |
1926 | for them). */ | |
1927 | if (local_symbols != NULL) | |
bd5635a1 | 1928 | { |
2f8c3639 JL |
1929 | /* Muzzle a compiler bug that makes end < start. (which |
1930 | compilers? Is this ever harmful?). */ | |
1931 | if (new->start_addr > valu) | |
1932 | { | |
1933 | complain (&lbrac_rbrac_complaint); | |
1934 | new->start_addr = valu; | |
1935 | } | |
1936 | /* Make a block for the local symbols within. */ | |
1937 | finish_block (0, &local_symbols, new->old_blocks, | |
1938 | new->start_addr, valu, objfile); | |
bd5635a1 | 1939 | } |
bd5635a1 RP |
1940 | } |
1941 | else | |
1942 | { | |
2f8c3639 JL |
1943 | /* This is the outermost LBRAC...RBRAC pair. There is no |
1944 | need to do anything; leave the symbols that preceded it | |
1945 | to be attached to the function's own block. We need to | |
1946 | indicate that we just moved outside of the function. */ | |
bd5635a1 RP |
1947 | within_function = 0; |
1948 | } | |
2f8c3639 | 1949 | |
bd5635a1 RP |
1950 | if (VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) |
1951 | /* Now pop locals of block just finished. */ | |
1952 | local_symbols = new->locals; | |
1953 | break; | |
1954 | ||
9bb30452 | 1955 | case N_FN: |
6150cc73 | 1956 | case N_FN_SEQ: |
9bb30452 | 1957 | /* This kind of symbol indicates the start of an object file. */ |
2af231b8 JG |
1958 | /* Relocate for dynamic loading */ |
1959 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
bd5635a1 RP |
1960 | break; |
1961 | ||
1962 | case N_SO: | |
1963 | /* This type of symbol indicates the start of data | |
1964 | for one source file. | |
1965 | Finish the symbol table of the previous source file | |
1966 | (if any) and start accumulating a new symbol table. */ | |
2af231b8 JG |
1967 | /* Relocate for dynamic loading */ |
1968 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c55e6167 | 1969 | |
8357834f JK |
1970 | n_opt_found = 0; |
1971 | ||
a5e6391b | 1972 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 1973 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 1974 | #endif |
8357834f | 1975 | |
bd5635a1 RP |
1976 | #ifdef PCC_SOL_BROKEN |
1977 | /* pcc bug, occasionally puts out SO for SOL. */ | |
1978 | if (context_stack_depth > 0) | |
1979 | { | |
1980 | start_subfile (name, NULL); | |
1981 | break; | |
1982 | } | |
1983 | #endif | |
1984 | if (last_source_file) | |
7e258d18 PB |
1985 | { |
1986 | /* Check if previous symbol was also an N_SO (with some | |
1987 | sanity checks). If so, that one was actually the directory | |
1988 | name, and the current one is the real file name. | |
1989 | Patch things up. */ | |
6985bc54 | 1990 | if (previous_stab_code == (unsigned char) N_SO) |
7e258d18 | 1991 | { |
3416d90b | 1992 | patch_subfile_names (current_subfile, name); |
c72af089 | 1993 | break; /* Ignore repeated SOs */ |
7e258d18 | 1994 | } |
94f5a25f | 1995 | end_symtab (valu, objfile, SECT_OFF_TEXT); |
3416d90b | 1996 | end_stabs (); |
7e258d18 | 1997 | } |
320f93f7 SG |
1998 | |
1999 | /* Null name means this just marks the end of text for this .o file. | |
2000 | Don't start a new symtab in this case. */ | |
2001 | if (*name == '\000') | |
2002 | break; | |
2003 | ||
3416d90b | 2004 | start_stabs (); |
bd5635a1 RP |
2005 | start_symtab (name, NULL, valu); |
2006 | break; | |
2007 | ||
2008 | case N_SOL: | |
2009 | /* This type of symbol indicates the start of data for | |
2010 | a sub-source-file, one whose contents were copied or | |
2011 | included in the compilation of the main source file | |
2012 | (whose name was given in the N_SO symbol.) */ | |
2af231b8 JG |
2013 | /* Relocate for dynamic loading */ |
2014 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
784fd92b | 2015 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
2016 | break; |
2017 | ||
2018 | case N_BINCL: | |
2019 | push_subfile (); | |
2020 | add_new_header_file (name, valu); | |
784fd92b | 2021 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
2022 | break; |
2023 | ||
2024 | case N_EINCL: | |
784fd92b | 2025 | start_subfile (pop_subfile (), current_subfile->dirname); |
bd5635a1 RP |
2026 | break; |
2027 | ||
2028 | case N_EXCL: | |
2029 | add_old_header_file (name, valu); | |
2030 | break; | |
2031 | ||
2032 | case N_SLINE: | |
2033 | /* This type of "symbol" really just records | |
2034 | one line-number -- core-address correspondence. | |
2035 | Enter it in the line list for this symbol table. */ | |
9342ecb9 JG |
2036 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
2037 | valu += function_start_offset; | |
a5e6391b | 2038 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 2039 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 2040 | #endif |
4137c5fc | 2041 | record_line (current_subfile, desc, valu); |
bd5635a1 RP |
2042 | break; |
2043 | ||
2044 | case N_BCOMM: | |
4d57c599 | 2045 | common_block_start (name, objfile); |
bd5635a1 RP |
2046 | break; |
2047 | ||
2048 | case N_ECOMM: | |
4d57c599 JK |
2049 | common_block_end (objfile); |
2050 | break; | |
bd5635a1 | 2051 | |
2af231b8 JG |
2052 | /* The following symbol types need to have the appropriate offset added |
2053 | to their value; then we process symbol definitions in the name. */ | |
2054 | ||
2055 | case N_STSYM: /* Static symbol in data seg */ | |
2056 | case N_LCSYM: /* Static symbol in BSS seg */ | |
2057 | case N_ROSYM: /* Static symbol in Read-only data seg */ | |
4d57c599 JK |
2058 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
2059 | Solaris2's stabs-in-elf makes *most* symbols relative | |
2060 | but leaves a few absolute (at least for Solaris 2.1 and version | |
2061 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on the fence. | |
2af231b8 JG |
2062 | .stab "foo:S...",N_STSYM is absolute (ld relocates it) |
2063 | .stab "foo:V...",N_STSYM is relative (section base subtracted). | |
2064 | This leaves us no choice but to search for the 'S' or 'V'... | |
2065 | (or pass the whole section_offsets stuff down ONE MORE function | |
4d57c599 | 2066 | call level, which we really don't want to do). */ |
2af231b8 JG |
2067 | { |
2068 | char *p; | |
a66e8382 SG |
2069 | |
2070 | /* .o files and NLMs have non-zero text seg offsets, but don't need | |
2071 | their static syms offset in this fashion. XXX - This is really a | |
2072 | crock that should be fixed in the solib handling code so that I | |
2073 | don't have to work around it here. */ | |
2074 | ||
2075 | if (!symfile_relocatable) | |
2af231b8 | 2076 | { |
a66e8382 SG |
2077 | p = strchr (name, ':'); |
2078 | if (p != 0 && p[1] == 'S') | |
2079 | { | |
2080 | /* The linker relocated it. We don't want to add an | |
2081 | elfstab_offset_sections-type offset, but we *do* want | |
2082 | to add whatever solib.c passed to symbol_file_add as | |
2083 | addr (this is known to affect SunOS4, and I suspect ELF | |
2084 | too). Since elfstab_offset_sections currently does not | |
2085 | muck with the text offset (there is no Ttext.text | |
2086 | symbol), we can get addr from the text offset. If | |
2087 | elfstab_offset_sections ever starts dealing with the | |
2088 | text offset, and we still need to do this, we need to | |
2089 | invent a SECT_OFF_ADDR_KLUDGE or something. */ | |
2090 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2091 | goto define_a_symbol; | |
2092 | } | |
2af231b8 JG |
2093 | } |
2094 | /* Since it's not the kludge case, re-dispatch to the right handler. */ | |
2095 | switch (type) { | |
2096 | case N_STSYM: goto case_N_STSYM; | |
2097 | case N_LCSYM: goto case_N_LCSYM; | |
2098 | case N_ROSYM: goto case_N_ROSYM; | |
2099 | default: abort(); | |
2100 | } | |
2101 | } | |
2102 | ||
2103 | case_N_STSYM: /* Static symbol in data seg */ | |
c55e6167 | 2104 | case N_DSLINE: /* Source line number, data seg */ |
2af231b8 JG |
2105 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA); |
2106 | goto define_a_symbol; | |
2107 | ||
2108 | case_N_LCSYM: /* Static symbol in BSS seg */ | |
c55e6167 JG |
2109 | case N_BSLINE: /* Source line number, bss seg */ |
2110 | /* N_BROWS: overlaps with N_BSLINE */ | |
2af231b8 JG |
2111 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS); |
2112 | goto define_a_symbol; | |
2113 | ||
2114 | case_N_ROSYM: /* Static symbol in Read-only data seg */ | |
2115 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA); | |
2116 | goto define_a_symbol; | |
2117 | ||
c55e6167 | 2118 | case N_ENTRY: /* Alternate entry point */ |
2af231b8 JG |
2119 | /* Relocate for dynamic loading */ |
2120 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2121 | goto define_a_symbol; | |
c55e6167 | 2122 | |
4f470205 JK |
2123 | /* The following symbol types we don't know how to process. Handle |
2124 | them in a "default" way, but complain to people who care. */ | |
2125 | default: | |
2126 | case N_CATCH: /* Exception handler catcher */ | |
2127 | case N_EHDECL: /* Exception handler name */ | |
2128 | case N_PC: /* Global symbol in Pascal */ | |
2129 | case N_M2C: /* Modula-2 compilation unit */ | |
2130 | /* N_MOD2: overlaps with N_EHDECL */ | |
2131 | case N_SCOPE: /* Modula-2 scope information */ | |
2132 | case N_ECOML: /* End common (local name) */ | |
2133 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
2134 | case N_NBDATA: | |
2135 | case N_NBBSS: | |
2136 | case N_NBSTS: | |
2137 | case N_NBLCS: | |
9d2b8d50 | 2138 | complain (&unknown_symtype_complaint, local_hex_string (type)); |
4f470205 JK |
2139 | /* FALLTHROUGH */ |
2140 | ||
c55e6167 JG |
2141 | /* The following symbol types don't need the address field relocated, |
2142 | since it is either unused, or is absolute. */ | |
2af231b8 | 2143 | define_a_symbol: |
c55e6167 JG |
2144 | case N_GSYM: /* Global variable */ |
2145 | case N_NSYMS: /* Number of symbols (ultrix) */ | |
2146 | case N_NOMAP: /* No map? (ultrix) */ | |
2147 | case N_RSYM: /* Register variable */ | |
2148 | case N_DEFD: /* Modula-2 GNU module dependency */ | |
2149 | case N_SSYM: /* Struct or union element */ | |
2150 | case N_LSYM: /* Local symbol in stack */ | |
2151 | case N_PSYM: /* Parameter variable */ | |
2152 | case N_LENG: /* Length of preceding symbol type */ | |
2153 | if (name) | |
4f470205 | 2154 | { |
b8ec9a79 JK |
2155 | int deftype; |
2156 | char *colon_pos = strchr (name, ':'); | |
2157 | if (colon_pos == NULL) | |
2158 | deftype = '\0'; | |
2159 | else | |
2160 | deftype = colon_pos[1]; | |
2161 | ||
2162 | switch (deftype) | |
4f470205 | 2163 | { |
b8ec9a79 JK |
2164 | case 'f': |
2165 | case 'F': | |
2166 | function_stab_type = type; | |
2167 | ||
b9e58503 PS |
2168 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
2169 | /* Deal with the SunPRO 3.0 compiler which omits the address | |
2170 | from N_FUN symbols. */ | |
989d9cba JK |
2171 | if (type == N_FUN |
2172 | && valu == ANOFFSET (section_offsets, SECT_OFF_TEXT)) | |
b9e58503 PS |
2173 | { |
2174 | struct minimal_symbol *msym; | |
2175 | char *p; | |
2176 | int n; | |
2177 | ||
2178 | p = strchr (name, ':'); | |
2179 | if (p == NULL) | |
2180 | p = name; | |
2181 | n = p - name; | |
2182 | p = alloca (n + 1); | |
2183 | strncpy (p, name, n); | |
2184 | p[n] = 0; | |
2185 | ||
2186 | msym = lookup_minimal_symbol (p, last_source_file, | |
2187 | objfile); | |
2188 | if (msym) | |
2189 | valu = SYMBOL_VALUE_ADDRESS (msym); | |
2190 | } | |
2191 | #endif | |
2192 | ||
3ef0fc8c | 2193 | #ifdef SUN_FIXED_LBRAC_BUG |
b8ec9a79 JK |
2194 | /* The Sun acc compiler, under SunOS4, puts out |
2195 | functions with N_GSYM or N_STSYM. The problem is | |
2196 | that the address of the symbol is no good (for N_GSYM | |
2197 | it doesn't even attept an address; for N_STSYM it | |
2198 | puts out an address but then it gets relocated | |
2199 | relative to the data segment, not the text segment). | |
2200 | Currently we can't fix this up later as we do for | |
2201 | some types of symbol in scan_file_globals. | |
2202 | Fortunately we do have a way of finding the address - | |
2203 | we know that the value in last_pc_address is either | |
2204 | the one we want (if we're dealing with the first | |
2205 | function in an object file), or somewhere in the | |
2206 | previous function. This means that we can use the | |
2207 | minimal symbol table to get the address. */ | |
2208 | ||
b9e58503 PS |
2209 | /* Starting with release 3.0, the Sun acc compiler, |
2210 | under SunOS4, puts out functions with N_FUN and a value | |
2211 | of zero. This gets relocated to the start of the text | |
2212 | segment of the module, which is no good either. | |
2213 | Under SunOS4 we can deal with this as N_SLINE and N_SO | |
2214 | entries contain valid absolute addresses. | |
2215 | Release 3.0 acc also puts out N_OPT entries, which makes | |
2216 | it possible to discern acc from cc or gcc. */ | |
2217 | ||
2218 | if (type == N_GSYM || type == N_STSYM | |
2219 | || (type == N_FUN | |
2220 | && n_opt_found && !block_address_function_relative)) | |
b8ec9a79 JK |
2221 | { |
2222 | struct minimal_symbol *m; | |
2223 | int l = colon_pos - name; | |
2224 | ||
2225 | m = lookup_minimal_symbol_by_pc (last_pc_address); | |
2b576293 C |
2226 | if (m && STREQN (SYMBOL_NAME (m), name, l) |
2227 | && SYMBOL_NAME (m) [l] == '\0') | |
b8ec9a79 JK |
2228 | /* last_pc_address was in this function */ |
2229 | valu = SYMBOL_VALUE (m); | |
94f5a25f DP |
2230 | else if (m && SYMBOL_NAME (m+1) |
2231 | && STREQN (SYMBOL_NAME (m+1), name, l) | |
2b576293 | 2232 | && SYMBOL_NAME (m+1) [l] == '\0') |
3c7d3064 JK |
2233 | /* last_pc_address was in last function */ |
2234 | valu = SYMBOL_VALUE (m+1); | |
b8ec9a79 | 2235 | else |
3c7d3064 JK |
2236 | /* Not found - use last_pc_address (for finish_block) */ |
2237 | valu = last_pc_address; | |
b8ec9a79 JK |
2238 | } |
2239 | ||
b8ec9a79 JK |
2240 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
2241 | #endif | |
2242 | ||
2243 | if (block_address_function_relative) | |
2244 | /* For Solaris 2.0 compilers, the block addresses and | |
2245 | N_SLINE's are relative to the start of the | |
2246 | function. On normal systems, and when using gcc on | |
2247 | Solaris 2.0, these addresses are just absolute, or | |
2248 | relative to the N_SO, depending on | |
2249 | BLOCK_ADDRESS_ABSOLUTE. */ | |
2250 | function_start_offset = valu; | |
2251 | ||
2252 | within_function = 1; | |
2253 | if (context_stack_depth > 0) | |
2254 | { | |
2255 | new = pop_context (); | |
2256 | /* Make a block for the local symbols within. */ | |
2257 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2258 | new->start_addr, valu, objfile); | |
2259 | } | |
2260 | /* Stack must be empty now. */ | |
2261 | if (context_stack_depth != 0) | |
2262 | complain (&lbrac_unmatched_complaint, symnum); | |
2263 | ||
2264 | new = push_context (0, valu); | |
2265 | new->name = define_symbol (valu, name, desc, type, objfile); | |
2266 | break; | |
2267 | ||
2268 | default: | |
2269 | define_symbol (valu, name, desc, type, objfile); | |
2270 | break; | |
4f470205 JK |
2271 | } |
2272 | } | |
bd5635a1 RP |
2273 | break; |
2274 | ||
ec8ceca3 JG |
2275 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
2276 | for a bunch of other flags, too. Someday we may parse their | |
2277 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
2278 | case N_OPT: /* Solaris 2: Compiler options */ | |
2279 | if (name) | |
2280 | { | |
2e4964ad | 2281 | if (STREQ (name, GCC2_COMPILED_FLAG_SYMBOL)) |
3416d90b | 2282 | { |
1aed6766 | 2283 | processing_gcc_compilation = 2; |
3416d90b | 2284 | #if 1 /* Works, but is experimental. -fnf */ |
1aed6766 | 2285 | if (AUTO_DEMANGLING) |
3416d90b FF |
2286 | { |
2287 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
2288 | } | |
2289 | #endif | |
2290 | } | |
8357834f JK |
2291 | else |
2292 | n_opt_found = 1; | |
ec8ceca3 JG |
2293 | } |
2294 | break; | |
2295 | ||
bcbf9559 JG |
2296 | /* The following symbol types can be ignored. */ |
2297 | case N_OBJ: /* Solaris 2: Object file dir and name */ | |
bcbf9559 JG |
2298 | /* N_UNDF: Solaris 2: file separator mark */ |
2299 | /* N_UNDF: -- we will never encounter it, since we only process one | |
2300 | file's symbols at once. */ | |
4c7c6bab JG |
2301 | case N_ENDM: /* Solaris 2: End of module */ |
2302 | case N_MAIN: /* Name of main routine. */ | |
9342ecb9 | 2303 | break; |
bd5635a1 | 2304 | } |
7e258d18 PB |
2305 | |
2306 | previous_stab_code = type; | |
bd5635a1 RP |
2307 | } |
2308 | \f | |
2b576293 C |
2309 | /* FIXME: The only difference between this and elfstab_build_psymtabs |
2310 | is the call to install_minimal_symbols for elf, and the support for | |
2311 | split sections. If the differences are really that small, the code | |
2312 | should be shared. */ | |
965a5c32 | 2313 | |
b5b186a2 SS |
2314 | /* Scan and build partial symbols for an coff symbol file. |
2315 | The coff file has already been processed to get its minimal symbols. | |
2316 | ||
2317 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2318 | rolled into one. | |
2319 | ||
2320 | OBJFILE is the object file we are reading symbols from. | |
2321 | ADDR is the address relative to which the symbols are (e.g. | |
2322 | the base address of the text segment). | |
2323 | MAINLINE is true if we are reading the main symbol | |
2324 | table (as opposed to a shared lib or dynamically loaded file). | |
2b576293 C |
2325 | TEXTADDR is the address of the text section. |
2326 | TEXTSIZE is the size of the text section. | |
2327 | STABSECTS is the list of .stab sections in OBJFILE. | |
b5b186a2 SS |
2328 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
2329 | .stabstr section exists. | |
2330 | ||
2331 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
2332 | adjusted for coff details. */ | |
2333 | ||
2334 | void | |
2335 | coffstab_build_psymtabs (objfile, section_offsets, mainline, | |
2b576293 | 2336 | textaddr, textsize, stabsects, |
b5b186a2 SS |
2337 | stabstroffset, stabstrsize) |
2338 | struct objfile *objfile; | |
2339 | struct section_offsets *section_offsets; | |
2340 | int mainline; | |
2b576293 C |
2341 | CORE_ADDR textaddr; |
2342 | unsigned int textsize; | |
2343 | struct stab_section_list *stabsects; | |
b5b186a2 SS |
2344 | file_ptr stabstroffset; |
2345 | unsigned int stabstrsize; | |
2346 | { | |
2347 | int val; | |
2348 | bfd *sym_bfd = objfile->obfd; | |
2349 | char *name = bfd_get_filename (sym_bfd); | |
2350 | struct dbx_symfile_info *info; | |
2b576293 | 2351 | unsigned int stabsize; |
b5b186a2 SS |
2352 | |
2353 | /* There is already a dbx_symfile_info allocated by our caller. | |
2354 | It might even contain some info from the coff symtab to help us. */ | |
965a5c32 | 2355 | info = (struct dbx_symfile_info *) objfile->sym_stab_info; |
b5b186a2 | 2356 | |
2b576293 C |
2357 | DBX_TEXT_ADDR (objfile) = textaddr; |
2358 | DBX_TEXT_SIZE (objfile) = textsize; | |
b5b186a2 SS |
2359 | |
2360 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
2361 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; | |
b5b186a2 | 2362 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
b5b186a2 SS |
2363 | |
2364 | if (stabstrsize > bfd_get_size (sym_bfd)) | |
2365 | error ("ridiculous string table size: %d bytes", stabstrsize); | |
2366 | DBX_STRINGTAB (objfile) = (char *) | |
2367 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
94f5a25f | 2368 | OBJSTAT (objfile, sz_strtab += stabstrsize+1); |
b5b186a2 SS |
2369 | |
2370 | /* Now read in the string table in one big gulp. */ | |
2371 | ||
2372 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
2373 | if (val < 0) | |
2374 | perror_with_name (name); | |
2375 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
2376 | if (val != stabstrsize) | |
2377 | perror_with_name (name); | |
2378 | ||
2379 | stabsread_new_init (); | |
2380 | buildsym_new_init (); | |
2381 | free_header_files (); | |
2382 | init_header_files (); | |
2383 | ||
2384 | processing_acc_compilation = 1; | |
2385 | ||
2386 | /* In a coff file, we've already installed the minimal symbols that came | |
2387 | from the coff (non-stab) symbol table, so always act like an | |
2388 | incremental load here. */ | |
2b576293 C |
2389 | if (stabsects->next == NULL) |
2390 | { | |
2391 | stabsize = bfd_section_size (sym_bfd, stabsects->section); | |
2392 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
2393 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
2394 | } | |
2395 | else | |
2396 | { | |
2397 | struct stab_section_list *stabsect; | |
2398 | ||
2399 | DBX_SYMCOUNT (objfile) = 0; | |
2400 | for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next) | |
2401 | { | |
2402 | stabsize = bfd_section_size (sym_bfd, stabsect->section); | |
2403 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); | |
2404 | } | |
2405 | ||
2406 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
2407 | ||
2408 | symbuf_sections = stabsects->next; | |
2409 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section); | |
2410 | symbuf_read = 0; | |
2411 | } | |
2412 | ||
b5b186a2 SS |
2413 | dbx_symfile_read (objfile, section_offsets, 0); |
2414 | } | |
2415 | \f | |
9342ecb9 JG |
2416 | /* Scan and build partial symbols for an ELF symbol file. |
2417 | This ELF file has already been processed to get its minimal symbols, | |
2418 | and any DWARF symbols that were in it. | |
2419 | ||
2420 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2421 | rolled into one. | |
2422 | ||
2423 | OBJFILE is the object file we are reading symbols from. | |
2424 | ADDR is the address relative to which the symbols are (e.g. | |
2425 | the base address of the text segment). | |
2426 | MAINLINE is true if we are reading the main symbol | |
2427 | table (as opposed to a shared lib or dynamically loaded file). | |
2428 | STABOFFSET and STABSIZE define the location in OBJFILE where the .stab | |
2429 | section exists. | |
2430 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
2431 | .stabstr section exists. | |
2432 | ||
2433 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
2434 | adjusted for elf details. */ | |
2435 | ||
2436 | void | |
1aed6766 | 2437 | elfstab_build_psymtabs (objfile, section_offsets, mainline, |
9342ecb9 | 2438 | staboffset, stabsize, |
1aed6766 SG |
2439 | stabstroffset, stabstrsize) |
2440 | struct objfile *objfile; | |
2441 | struct section_offsets *section_offsets; | |
2442 | int mainline; | |
51b80b00 | 2443 | file_ptr staboffset; |
1aed6766 | 2444 | unsigned int stabsize; |
51b80b00 | 2445 | file_ptr stabstroffset; |
1aed6766 | 2446 | unsigned int stabstrsize; |
9342ecb9 JG |
2447 | { |
2448 | int val; | |
2449 | bfd *sym_bfd = objfile->obfd; | |
2450 | char *name = bfd_get_filename (sym_bfd); | |
2451 | struct dbx_symfile_info *info; | |
2b576293 | 2452 | asection *text_sect; |
9342ecb9 | 2453 | |
2af231b8 JG |
2454 | /* There is already a dbx_symfile_info allocated by our caller. |
2455 | It might even contain some info from the ELF symtab to help us. */ | |
965a5c32 | 2456 | info = (struct dbx_symfile_info *) objfile->sym_stab_info; |
9342ecb9 | 2457 | |
2b576293 C |
2458 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
2459 | if (!text_sect) | |
9342ecb9 | 2460 | error ("Can't find .text section in symbol file"); |
2b576293 C |
2461 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
2462 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
9342ecb9 JG |
2463 | |
2464 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
2465 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; | |
2466 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
2467 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; | |
2468 | DBX_SYMTAB_OFFSET (objfile) = staboffset; | |
2469 | ||
996ccb30 | 2470 | if (stabstrsize > bfd_get_size (sym_bfd)) |
9342ecb9 JG |
2471 | error ("ridiculous string table size: %d bytes", stabstrsize); |
2472 | DBX_STRINGTAB (objfile) = (char *) | |
2473 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
94f5a25f | 2474 | OBJSTAT (objfile, sz_strtab += stabstrsize+1); |
9342ecb9 JG |
2475 | |
2476 | /* Now read in the string table in one big gulp. */ | |
2477 | ||
2c7ab4ca | 2478 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); |
9342ecb9 JG |
2479 | if (val < 0) |
2480 | perror_with_name (name); | |
2481 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
2482 | if (val != stabstrsize) | |
2483 | perror_with_name (name); | |
2484 | ||
3416d90b | 2485 | stabsread_new_init (); |
9342ecb9 JG |
2486 | buildsym_new_init (); |
2487 | free_header_files (); | |
2488 | init_header_files (); | |
2489 | install_minimal_symbols (objfile); | |
2490 | ||
2491 | processing_acc_compilation = 1; | |
2492 | ||
2493 | /* In an elf file, we've already installed the minimal symbols that came | |
2494 | from the elf (non-stab) symbol table, so always act like an | |
2495 | incremental load here. */ | |
2af231b8 JG |
2496 | dbx_symfile_read (objfile, section_offsets, 0); |
2497 | } | |
2498 | \f | |
a66e8382 SG |
2499 | /* Scan and build partial symbols for a file with special sections for stabs |
2500 | and stabstrings. The file has already been processed to get its minimal | |
2501 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
2502 | ||
2503 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2504 | rolled into one. | |
2505 | ||
2506 | OBJFILE is the object file we are reading symbols from. | |
2507 | ADDR is the address relative to which the symbols are (e.g. the base address | |
2508 | of the text segment). | |
2509 | MAINLINE is true if we are reading the main symbol table (as opposed to a | |
2510 | shared lib or dynamically loaded file). | |
2511 | STAB_NAME is the name of the section that contains the stabs. | |
2512 | STABSTR_NAME is the name of the section that contains the stab strings. | |
2513 | ||
2514 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read. */ | |
2515 | ||
2516 | void | |
2517 | stabsect_build_psymtabs (objfile, section_offsets, mainline, stab_name, | |
320f93f7 | 2518 | stabstr_name, text_name) |
a66e8382 SG |
2519 | struct objfile *objfile; |
2520 | struct section_offsets *section_offsets; | |
2521 | int mainline; | |
2522 | char *stab_name; | |
2523 | char *stabstr_name; | |
320f93f7 | 2524 | char *text_name; |
a66e8382 SG |
2525 | { |
2526 | int val; | |
2527 | bfd *sym_bfd = objfile->obfd; | |
2528 | char *name = bfd_get_filename (sym_bfd); | |
2529 | asection *stabsect; | |
2530 | asection *stabstrsect; | |
2b576293 | 2531 | asection *text_sect; |
a66e8382 SG |
2532 | |
2533 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
2534 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
2535 | ||
2536 | if (!stabsect) | |
2537 | return; | |
2538 | ||
2539 | if (!stabstrsect) | |
2540 | error ("stabsect_build_psymtabs: Found stabs (%s), but not string section (%s)", | |
2541 | stab_name, stabstr_name); | |
2542 | ||
bfe2f12b | 2543 | objfile->sym_stab_info = (PTR) xmalloc (sizeof (struct dbx_symfile_info)); |
a66e8382 SG |
2544 | memset (DBX_SYMFILE_INFO (objfile), 0, sizeof (struct dbx_symfile_info)); |
2545 | ||
2b576293 C |
2546 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); |
2547 | if (!text_sect) | |
320f93f7 | 2548 | error ("Can't find %s section in symbol file", text_name); |
2b576293 C |
2549 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
2550 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
a66e8382 SG |
2551 | |
2552 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); | |
2553 | DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect) | |
2554 | / DBX_SYMBOL_SIZE (objfile); | |
2555 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect); | |
2556 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING INSIDE BFD DATA STRUCTURES */ | |
2557 | ||
2558 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
2559 | error ("ridiculous string table size: %d bytes", DBX_STRINGTAB_SIZE (objfile)); | |
2560 | DBX_STRINGTAB (objfile) = (char *) | |
2561 | obstack_alloc (&objfile->psymbol_obstack, DBX_STRINGTAB_SIZE (objfile) + 1); | |
94f5a25f | 2562 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); |
a66e8382 SG |
2563 | |
2564 | /* Now read in the string table in one big gulp. */ | |
2565 | ||
2566 | val = bfd_get_section_contents (sym_bfd, /* bfd */ | |
2567 | stabstrsect, /* bfd section */ | |
2568 | DBX_STRINGTAB (objfile), /* input buffer */ | |
2569 | 0, /* offset into section */ | |
2570 | DBX_STRINGTAB_SIZE (objfile)); /* amount to read */ | |
2571 | ||
2572 | if (!val) | |
2573 | perror_with_name (name); | |
2574 | ||
2575 | stabsread_new_init (); | |
2576 | buildsym_new_init (); | |
2577 | free_header_files (); | |
2578 | init_header_files (); | |
2579 | install_minimal_symbols (objfile); | |
2580 | ||
2581 | /* Now, do an incremental load */ | |
2582 | ||
2583 | processing_acc_compilation = 1; | |
2584 | dbx_symfile_read (objfile, section_offsets, 0); | |
2585 | } | |
2586 | \f | |
2af231b8 JG |
2587 | /* Parse the user's idea of an offset for dynamic linking, into our idea |
2588 | of how to represent it for fast symbol reading. */ | |
2589 | ||
040b9597 | 2590 | static struct section_offsets * |
2af231b8 JG |
2591 | dbx_symfile_offsets (objfile, addr) |
2592 | struct objfile *objfile; | |
2593 | CORE_ADDR addr; | |
2594 | { | |
2595 | struct section_offsets *section_offsets; | |
2596 | int i; | |
4d57c599 JK |
2597 | |
2598 | objfile->num_sections = SECT_OFF_MAX; | |
2af231b8 JG |
2599 | section_offsets = (struct section_offsets *) |
2600 | obstack_alloc (&objfile -> psymbol_obstack, | |
4d57c599 JK |
2601 | sizeof (struct section_offsets) |
2602 | + sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1)); | |
2af231b8 JG |
2603 | |
2604 | for (i = 0; i < SECT_OFF_MAX; i++) | |
2605 | ANOFFSET (section_offsets, i) = addr; | |
2606 | ||
2607 | return section_offsets; | |
9342ecb9 JG |
2608 | } |
2609 | \f | |
80d68b1d FF |
2610 | static struct sym_fns aout_sym_fns = |
2611 | { | |
0eed42de | 2612 | bfd_target_aout_flavour, |
80d68b1d FF |
2613 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2614 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2615 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2616 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2af231b8 | 2617 | dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
80d68b1d FF |
2618 | NULL /* next: pointer to next struct sym_fns */ |
2619 | }; | |
bd5635a1 RP |
2620 | |
2621 | void | |
2622 | _initialize_dbxread () | |
2623 | { | |
bd5635a1 | 2624 | add_symtab_fns(&aout_sym_fns); |
bd5635a1 | 2625 | } |