Commit | Line | Data |
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bd5635a1 | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
2fe3b329 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994 |
65ce5df4 | 3 | Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
c3a21801 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
c3a21801 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
c3a21801 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
c3a21801 JG |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
9404978d MT |
20 | |
21 | /* This module provides three functions: dbx_symfile_init, | |
22 | which initializes to read a symbol file; dbx_new_init, which | |
23 | discards existing cached information when all symbols are being | |
24 | discarded; and dbx_symfile_read, which reads a symbol table | |
25 | from a file. | |
26 | ||
27 | dbx_symfile_read only does the minimum work necessary for letting the | |
28 | user "name" things symbolically; it does not read the entire symtab. | |
29 | Instead, it reads the external and static symbols and puts them in partial | |
30 | symbol tables. When more extensive information is requested of a | |
31 | file, the corresponding partial symbol table is mutated into a full | |
32 | fledged symbol table by going back and reading the symbols | |
33 | for real. dbx_psymtab_to_symtab() is the function that does this */ | |
bd5635a1 | 34 | |
bd5635a1 | 35 | #include "defs.h" |
318bf84f | 36 | #include <string.h> |
bd5635a1 | 37 | |
9342ecb9 | 38 | #if defined(USG) || defined(__CYGNUSCLIB__) |
bd5635a1 RP |
39 | #include <sys/types.h> |
40 | #include <fcntl.h> | |
bd5635a1 RP |
41 | #endif |
42 | ||
afe4ca15 JG |
43 | #include <obstack.h> |
44 | #include <sys/param.h> | |
021959e2 | 45 | #ifndef NO_SYS_FILE |
afe4ca15 | 46 | #include <sys/file.h> |
021959e2 | 47 | #endif |
afe4ca15 | 48 | #include <sys/stat.h> |
bd5635a1 | 49 | #include <ctype.h> |
afe4ca15 JG |
50 | #include "symtab.h" |
51 | #include "breakpoint.h" | |
52 | #include "command.h" | |
53 | #include "target.h" | |
54 | #include "gdbcore.h" /* for bfd stuff */ | |
ac88ca20 | 55 | #include "libbfd.h" /* FIXME Secret internal BFD stuff (bfd_read) */ |
afe4ca15 JG |
56 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
57 | #include "symfile.h" | |
3624c875 | 58 | #include "objfiles.h" |
c0302457 | 59 | #include "buildsym.h" |
3416d90b | 60 | #include "stabsread.h" |
2af231b8 | 61 | #include "gdb-stabs.h" |
3416d90b | 62 | #include "demangle.h" |
51b80b00 FF |
63 | #include "language.h" /* Needed inside partial-stab.h */ |
64 | #include "complaints.h" | |
afe4ca15 | 65 | |
7e258d18 PB |
66 | #include "aout/aout64.h" |
67 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */ | |
bd5635a1 | 68 | |
2c7ab4ca JK |
69 | #if !defined (SEEK_SET) |
70 | #define SEEK_SET 0 | |
71 | #define SEEK_CUR 1 | |
72 | #endif | |
73 | ||
4a35d6e9 FF |
74 | /* Each partial symbol table entry contains a pointer to private data for the |
75 | read_symtab() function to use when expanding a partial symbol table entry | |
76 | to a full symbol table entry. | |
77 | ||
78 | For dbxread this structure contains the offset within the file symbol table | |
79 | of first local symbol for this file, and length (in bytes) of the section | |
80 | of the symbol table devoted to this file's symbols (actually, the section | |
9342ecb9 JG |
81 | bracketed may contain more than just this file's symbols). It also contains |
82 | further information needed to locate the symbols if they are in an ELF file. | |
83 | ||
84 | If ldsymlen is 0, the only reason for this thing's existence is the | |
85 | dependency list. Nothing else will happen when it is read in. */ | |
4a35d6e9 FF |
86 | |
87 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) | |
88 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
9342ecb9 JG |
89 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) |
90 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
91 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
92 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
93 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
4a35d6e9 FF |
94 | |
95 | struct symloc { | |
96 | int ldsymoff; | |
97 | int ldsymlen; | |
9342ecb9 JG |
98 | int symbol_size; |
99 | int symbol_offset; | |
100 | int string_offset; | |
101 | int file_string_offset; | |
4a35d6e9 FF |
102 | }; |
103 | ||
bd5635a1 RP |
104 | /* Macro to determine which symbols to ignore when reading the first symbol |
105 | of a file. Some machines override this definition. */ | |
106 | #ifndef IGNORE_SYMBOL | |
107 | /* This code is used on Ultrix systems. Ignore it */ | |
108 | #define IGNORE_SYMBOL(type) (type == (int)N_NSYMS) | |
109 | #endif | |
110 | ||
2e4964ad FF |
111 | /* Remember what we deduced to be the source language of this psymtab. */ |
112 | ||
113 | static enum language psymtab_language = language_unknown; | |
114 | ||
bd5635a1 RP |
115 | /* Nonzero means give verbose info on gdb action. From main.c. */ |
116 | extern int info_verbose; | |
117 | ||
7d9884b9 | 118 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
bd5635a1 | 119 | |
c0302457 | 120 | static bfd *symfile_bfd; |
bd5635a1 | 121 | |
afe4ca15 JG |
122 | /* The size of each symbol in the symbol file (in external form). |
123 | This is set by dbx_symfile_read when building psymtabs, and by | |
124 | dbx_psymtab_to_symtab when building symtabs. */ | |
125 | ||
126 | static unsigned symbol_size; | |
127 | ||
9342ecb9 JG |
128 | /* This is the offset of the symbol table in the executable file */ |
129 | static unsigned symbol_table_offset; | |
130 | ||
131 | /* This is the offset of the string table in the executable file */ | |
132 | static unsigned string_table_offset; | |
133 | ||
134 | /* For elf+stab executables, the n_strx field is not a simple index | |
135 | into the string table. Instead, each .o file has a base offset | |
136 | in the string table, and the associated symbols contain offsets | |
137 | from this base. The following two variables contain the base | |
138 | offset for the current and next .o files. */ | |
139 | static unsigned int file_string_table_offset; | |
140 | static unsigned int next_file_string_table_offset; | |
9d2b8d50 JK |
141 | \f |
142 | /* This is the lowest text address we have yet encountered. */ | |
143 | static CORE_ADDR lowest_text_address; | |
9342ecb9 | 144 | |
bd5635a1 RP |
145 | /* Complaints about the symbols we have encountered. */ |
146 | ||
bd5635a1 RP |
147 | struct complaint lbrac_complaint = |
148 | {"bad block start address patched", 0, 0}; | |
149 | ||
bd5635a1 RP |
150 | struct complaint string_table_offset_complaint = |
151 | {"bad string table offset in symbol %d", 0, 0}; | |
152 | ||
153 | struct complaint unknown_symtype_complaint = | |
0c4d2cc2 | 154 | {"unknown symbol type %s", 0, 0}; |
bd5635a1 | 155 | |
65ce5df4 | 156 | struct complaint unknown_symchar_complaint = |
b30c81b6 | 157 | {"unknown symbol descriptor `%c'", 0, 0}; |
65ce5df4 | 158 | |
bd5635a1 RP |
159 | struct complaint lbrac_rbrac_complaint = |
160 | {"block start larger than block end", 0, 0}; | |
7d9884b9 JG |
161 | |
162 | struct complaint lbrac_unmatched_complaint = | |
163 | {"unmatched N_LBRAC before symtab pos %d", 0, 0}; | |
164 | ||
165 | struct complaint lbrac_mismatch_complaint = | |
166 | {"N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", 0, 0}; | |
9342ecb9 JG |
167 | |
168 | struct complaint repeated_header_complaint = | |
169 | {"\"repeated\" header file not previously seen, at symtab pos %d", 0, 0}; | |
170 | ||
171 | struct complaint repeated_header_name_complaint = | |
172 | {"\"repeated\" header file not previously seen, named %s", 0, 0}; | |
bd5635a1 | 173 | \f |
bd5635a1 RP |
174 | /* During initial symbol readin, we need to have a structure to keep |
175 | track of which psymtabs have which bincls in them. This structure | |
176 | is used during readin to setup the list of dependencies within each | |
177 | partial symbol table. */ | |
178 | ||
179 | struct header_file_location | |
180 | { | |
181 | char *name; /* Name of header file */ | |
182 | int instance; /* See above */ | |
183 | struct partial_symtab *pst; /* Partial symtab that has the | |
184 | BINCL/EINCL defs for this file */ | |
185 | }; | |
186 | ||
187 | /* The actual list and controling variables */ | |
188 | static struct header_file_location *bincl_list, *next_bincl; | |
189 | static int bincls_allocated; | |
190 | ||
021959e2 JG |
191 | /* Local function prototypes */ |
192 | ||
193 | static void | |
80d68b1d FF |
194 | free_header_files PARAMS ((void)); |
195 | ||
196 | static void | |
197 | init_header_files PARAMS ((void)); | |
021959e2 | 198 | |
574dac8e JK |
199 | static void |
200 | read_ofile_symtab PARAMS ((struct partial_symtab *)); | |
021959e2 JG |
201 | |
202 | static void | |
203 | dbx_psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
204 | ||
205 | static void | |
4c07f28d | 206 | dbx_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *)); |
021959e2 | 207 | |
5801f348 JK |
208 | static void |
209 | read_dbx_dynamic_symtab PARAMS ((struct section_offsets *, | |
210 | struct objfile *objfile)); | |
211 | ||
021959e2 | 212 | static void |
2af231b8 JG |
213 | read_dbx_symtab PARAMS ((struct section_offsets *, struct objfile *, |
214 | CORE_ADDR, int)); | |
021959e2 JG |
215 | |
216 | static void | |
217 | free_bincl_list PARAMS ((struct objfile *)); | |
218 | ||
219 | static struct partial_symtab * | |
220 | find_corresponding_bincl_psymtab PARAMS ((char *, int)); | |
221 | ||
222 | static void | |
223 | add_bincl_to_list PARAMS ((struct partial_symtab *, char *, int)); | |
224 | ||
225 | static void | |
226 | init_bincl_list PARAMS ((int, struct objfile *)); | |
227 | ||
228 | static void | |
3624c875 | 229 | init_psymbol_list PARAMS ((struct objfile *)); |
021959e2 JG |
230 | |
231 | static char * | |
232 | dbx_next_symbol_text PARAMS ((void)); | |
233 | ||
234 | static void | |
235 | fill_symbuf PARAMS ((bfd *)); | |
236 | ||
237 | static void | |
80d68b1d FF |
238 | dbx_symfile_init PARAMS ((struct objfile *)); |
239 | ||
240 | static void | |
241 | dbx_new_init PARAMS ((struct objfile *)); | |
021959e2 JG |
242 | |
243 | static void | |
2af231b8 | 244 | dbx_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); |
021959e2 JG |
245 | |
246 | static void | |
80d68b1d | 247 | dbx_symfile_finish PARAMS ((struct objfile *)); |
021959e2 JG |
248 | |
249 | static void | |
250 | record_minimal_symbol PARAMS ((char *, CORE_ADDR, int, struct objfile *)); | |
251 | ||
252 | static void | |
253 | add_new_header_file PARAMS ((char *, int)); | |
254 | ||
255 | static void | |
256 | add_old_header_file PARAMS ((char *, int)); | |
257 | ||
258 | static void | |
259 | add_this_object_header_file PARAMS ((int)); | |
260 | ||
80d68b1d | 261 | /* Free up old header file tables */ |
bd5635a1 | 262 | |
021959e2 | 263 | static void |
80d68b1d | 264 | free_header_files () |
bd5635a1 RP |
265 | { |
266 | register int i; | |
bd5635a1 | 267 | |
80d68b1d FF |
268 | if (header_files != NULL) |
269 | { | |
270 | for (i = 0; i < n_header_files; i++) | |
271 | { | |
272 | free (header_files[i].name); | |
273 | } | |
ac88ca20 | 274 | free ((PTR)header_files); |
80d68b1d FF |
275 | header_files = NULL; |
276 | n_header_files = 0; | |
277 | } | |
278 | if (this_object_header_files) | |
279 | { | |
ac88ca20 | 280 | free ((PTR)this_object_header_files); |
80d68b1d FF |
281 | this_object_header_files = NULL; |
282 | } | |
283 | n_allocated_header_files = 0; | |
284 | n_allocated_this_object_header_files = 0; | |
285 | } | |
286 | ||
287 | /* Allocate new header file tables */ | |
288 | ||
289 | static void | |
290 | init_header_files () | |
291 | { | |
bd5635a1 | 292 | n_header_files = 0; |
80d68b1d FF |
293 | n_allocated_header_files = 10; |
294 | header_files = (struct header_file *) | |
295 | xmalloc (10 * sizeof (struct header_file)); | |
bd5635a1 RP |
296 | |
297 | n_allocated_this_object_header_files = 10; | |
298 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); | |
299 | } | |
300 | ||
bd5635a1 RP |
301 | /* Add header file number I for this object file |
302 | at the next successive FILENUM. */ | |
303 | ||
304 | static void | |
305 | add_this_object_header_file (i) | |
306 | int i; | |
307 | { | |
308 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
309 | { | |
310 | n_allocated_this_object_header_files *= 2; | |
311 | this_object_header_files | |
021959e2 | 312 | = (int *) xrealloc ((char *) this_object_header_files, |
bd5635a1 RP |
313 | n_allocated_this_object_header_files * sizeof (int)); |
314 | } | |
315 | ||
316 | this_object_header_files[n_this_object_header_files++] = i; | |
317 | } | |
318 | ||
319 | /* Add to this file an "old" header file, one already seen in | |
320 | a previous object file. NAME is the header file's name. | |
321 | INSTANCE is its instance code, to select among multiple | |
322 | symbol tables for the same header file. */ | |
323 | ||
324 | static void | |
325 | add_old_header_file (name, instance) | |
326 | char *name; | |
327 | int instance; | |
328 | { | |
329 | register struct header_file *p = header_files; | |
330 | register int i; | |
331 | ||
332 | for (i = 0; i < n_header_files; i++) | |
2e4964ad | 333 | if (STREQ (p[i].name, name) && instance == p[i].instance) |
bd5635a1 RP |
334 | { |
335 | add_this_object_header_file (i); | |
336 | return; | |
337 | } | |
51b80b00 | 338 | complain (&repeated_header_complaint, symnum); |
9342ecb9 | 339 | complain (&repeated_header_name_complaint, name); |
bd5635a1 RP |
340 | } |
341 | ||
342 | /* Add to this file a "new" header file: definitions for its types follow. | |
343 | NAME is the header file's name. | |
344 | Most often this happens only once for each distinct header file, | |
345 | but not necessarily. If it happens more than once, INSTANCE has | |
346 | a different value each time, and references to the header file | |
347 | use INSTANCE values to select among them. | |
348 | ||
349 | dbx output contains "begin" and "end" markers for each new header file, | |
350 | but at this level we just need to know which files there have been; | |
351 | so we record the file when its "begin" is seen and ignore the "end". */ | |
352 | ||
353 | static void | |
354 | add_new_header_file (name, instance) | |
355 | char *name; | |
356 | int instance; | |
357 | { | |
358 | register int i; | |
bd5635a1 RP |
359 | |
360 | /* Make sure there is room for one more header file. */ | |
361 | ||
362 | if (n_header_files == n_allocated_header_files) | |
363 | { | |
364 | n_allocated_header_files *= 2; | |
365 | header_files = (struct header_file *) | |
021959e2 JG |
366 | xrealloc ((char *) header_files, |
367 | (n_allocated_header_files * sizeof (struct header_file))); | |
bd5635a1 RP |
368 | } |
369 | ||
370 | /* Create an entry for this header file. */ | |
371 | ||
372 | i = n_header_files++; | |
373 | header_files[i].name = savestring (name, strlen(name)); | |
374 | header_files[i].instance = instance; | |
375 | header_files[i].length = 10; | |
376 | header_files[i].vector | |
377 | = (struct type **) xmalloc (10 * sizeof (struct type *)); | |
4ed3a9ea | 378 | memset (header_files[i].vector, 0, 10 * sizeof (struct type *)); |
bd5635a1 RP |
379 | |
380 | add_this_object_header_file (i); | |
381 | } | |
382 | ||
bd5635a1 RP |
383 | #if 0 |
384 | static struct type ** | |
385 | explicit_lookup_type (real_filenum, index) | |
386 | int real_filenum, index; | |
387 | { | |
388 | register struct header_file *f = &header_files[real_filenum]; | |
389 | ||
390 | if (index >= f->length) | |
391 | { | |
392 | f->length *= 2; | |
393 | f->vector = (struct type **) | |
394 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
4ed97c9a RP |
395 | memset (&f->vector[f->length / 2], |
396 | '\0', f->length * sizeof (struct type *) / 2); | |
bd5635a1 RP |
397 | } |
398 | return &f->vector[index]; | |
399 | } | |
400 | #endif | |
401 | \f | |
9bba3334 | 402 | static void |
021959e2 | 403 | record_minimal_symbol (name, address, type, objfile) |
bd5635a1 RP |
404 | char *name; |
405 | CORE_ADDR address; | |
406 | int type; | |
021959e2 | 407 | struct objfile *objfile; |
bd5635a1 | 408 | { |
021959e2 | 409 | enum minimal_symbol_type ms_type; |
0c4d2cc2 | 410 | |
b8ec9a79 JK |
411 | switch (type) |
412 | { | |
413 | case N_TEXT | N_EXT: ms_type = mst_text; break; | |
414 | case N_DATA | N_EXT: ms_type = mst_data; break; | |
415 | case N_BSS | N_EXT: ms_type = mst_bss; break; | |
416 | case N_ABS | N_EXT: ms_type = mst_abs; break; | |
0c4d2cc2 | 417 | #ifdef N_SETV |
b8ec9a79 JK |
418 | case N_SETV | N_EXT: ms_type = mst_data; break; |
419 | case N_SETV: | |
420 | /* I don't think this type actually exists; since a N_SETV is the result | |
421 | of going over many .o files, it doesn't make sense to have one | |
422 | file local. */ | |
423 | ms_type = mst_file_data; | |
424 | break; | |
0c4d2cc2 | 425 | #endif |
05c81f45 | 426 | case N_TEXT: |
b8ec9a79 JK |
427 | case N_NBTEXT: |
428 | case N_FN: | |
429 | case N_FN_SEQ: | |
b8ec9a79 JK |
430 | ms_type = mst_file_text; |
431 | break; | |
432 | ||
433 | case N_DATA: | |
434 | ms_type = mst_file_data; | |
435 | ||
436 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
437 | Record it as global even if it's local, not global, so | |
05c81f45 SEF |
438 | lookup_minimal_symbol can find it. We don't check symbol_leading_char |
439 | because for SunOS4 it always is '_'. */ | |
b8ec9a79 JK |
440 | if (name[8] == 'C' && STREQ ("__DYNAMIC", name)) |
441 | ms_type = mst_data; | |
442 | ||
443 | /* Same with virtual function tables, both global and static. */ | |
444 | { | |
445 | char *tempstring = name; | |
446 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) | |
447 | ++tempstring; | |
448 | if (VTBL_PREFIX_P ((tempstring))) | |
449 | ms_type = mst_data; | |
450 | } | |
451 | break; | |
452 | ||
453 | case N_BSS: | |
454 | ms_type = mst_file_bss; | |
455 | break; | |
456 | ||
021959e2 | 457 | default: ms_type = mst_unknown; break; |
0c4d2cc2 | 458 | } |
bd5635a1 | 459 | |
9d2b8d50 JK |
460 | if (ms_type == mst_file_text || ms_type == mst_text |
461 | && address < lowest_text_address) | |
462 | lowest_text_address = address; | |
463 | ||
b8ec9a79 JK |
464 | prim_record_minimal_symbol |
465 | (obsavestring (name, strlen (name), &objfile -> symbol_obstack), | |
466 | address, | |
6545c6a0 JK |
467 | ms_type, |
468 | objfile); | |
bd5635a1 RP |
469 | } |
470 | \f | |
471 | /* Scan and build partial symbols for a symbol file. | |
472 | We have been initialized by a call to dbx_symfile_init, which | |
3624c875 FF |
473 | put all the relevant info into a "struct dbx_symfile_info", |
474 | hung off the objfile structure. | |
bd5635a1 | 475 | |
2af231b8 JG |
476 | SECTION_OFFSETS contains offsets relative to which the symbols in the |
477 | various sections are (depending where the sections were actually loaded). | |
bd5635a1 RP |
478 | MAINLINE is true if we are reading the main symbol |
479 | table (as opposed to a shared lib or dynamically loaded file). */ | |
480 | ||
9bba3334 | 481 | static void |
2af231b8 | 482 | dbx_symfile_read (objfile, section_offsets, mainline) |
80d68b1d | 483 | struct objfile *objfile; |
2af231b8 | 484 | struct section_offsets *section_offsets; |
bd5635a1 RP |
485 | int mainline; /* FIXME comments above */ |
486 | { | |
80d68b1d | 487 | bfd *sym_bfd; |
bd5635a1 | 488 | int val; |
0eb22669 | 489 | struct cleanup *back_to; |
bd5635a1 | 490 | |
80d68b1d | 491 | sym_bfd = objfile->obfd; |
2c7ab4ca | 492 | val = bfd_seek (objfile->obfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); |
bd5635a1 | 493 | if (val < 0) |
80d68b1d | 494 | perror_with_name (objfile->name); |
bd5635a1 | 495 | |
66eeea27 | 496 | /* If we are reinitializing, or if we have never loaded syms yet, init */ |
80d68b1d | 497 | if (mainline || objfile->global_psymbols.size == 0 || objfile->static_psymbols.size == 0) |
3624c875 | 498 | init_psymbol_list (objfile); |
66eeea27 | 499 | |
9342ecb9 JG |
500 | symbol_size = DBX_SYMBOL_SIZE (objfile); |
501 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
afe4ca15 | 502 | |
bd5635a1 | 503 | pending_blocks = 0; |
0eb22669 | 504 | back_to = make_cleanup (really_free_pendings, 0); |
bd5635a1 | 505 | |
021959e2 JG |
506 | init_minimal_symbol_collection (); |
507 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
508 | |
509 | /* Now that the symbol table data of the executable file are all in core, | |
510 | process them and define symbols accordingly. */ | |
511 | ||
2af231b8 | 512 | read_dbx_symtab (section_offsets, objfile, |
3624c875 FF |
513 | bfd_section_vma (sym_bfd, DBX_TEXT_SECT (objfile)), |
514 | bfd_section_size (sym_bfd, DBX_TEXT_SECT (objfile))); | |
bd5635a1 | 515 | |
5801f348 JK |
516 | /* Add the dynamic symbols if we are reading the main symbol table. */ |
517 | ||
518 | if (mainline) | |
519 | read_dbx_dynamic_symtab (section_offsets, objfile); | |
520 | ||
021959e2 JG |
521 | /* Install any minimal symbols that have been collected as the current |
522 | minimal symbols for this objfile. */ | |
bd5635a1 | 523 | |
80d68b1d | 524 | install_minimal_symbols (objfile); |
bd5635a1 | 525 | |
021959e2 | 526 | if (!have_partial_symbols ()) { |
9404978d MT |
527 | wrap_here (""); |
528 | printf_filtered ("(no debugging symbols found)..."); | |
529 | wrap_here (""); | |
530 | } | |
0eb22669 PS |
531 | |
532 | do_cleanups (back_to); | |
bd5635a1 RP |
533 | } |
534 | ||
9404978d MT |
535 | /* Initialize anything that needs initializing when a completely new |
536 | symbol file is specified (not just adding some symbols from another | |
537 | file, e.g. a shared library). */ | |
bd5635a1 | 538 | |
9bba3334 | 539 | static void |
ac88ca20 JG |
540 | dbx_new_init (ignore) |
541 | struct objfile *ignore; | |
bd5635a1 | 542 | { |
3416d90b | 543 | stabsread_new_init (); |
c0302457 | 544 | buildsym_new_init (); |
80d68b1d | 545 | init_header_files (); |
bd5635a1 RP |
546 | } |
547 | ||
548 | ||
549 | /* dbx_symfile_init () | |
550 | is the dbx-specific initialization routine for reading symbols. | |
80d68b1d | 551 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
552 | the BFD for the file whose symbols are being read, and a slot for a pointer |
553 | to "private data" which we fill with goodies. | |
554 | ||
555 | We read the string table into malloc'd space and stash a pointer to it. | |
556 | ||
557 | Since BFD doesn't know how to read debug symbols in a format-independent | |
558 | way (and may never do so...), we have to do it ourselves. We will never | |
559 | be called unless this is an a.out (or very similar) file. | |
560 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
561 | ||
69a272c4 FF |
562 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
563 | ||
9bba3334 | 564 | static void |
80d68b1d FF |
565 | dbx_symfile_init (objfile) |
566 | struct objfile *objfile; | |
bd5635a1 RP |
567 | { |
568 | int val; | |
80d68b1d | 569 | bfd *sym_bfd = objfile->obfd; |
bd5635a1 | 570 | char *name = bfd_get_filename (sym_bfd); |
69a272c4 | 571 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; |
bd5635a1 RP |
572 | |
573 | /* Allocate struct to keep track of the symfile */ | |
965a5c32 | 574 | objfile->sym_stab_info = (PTR) |
3624c875 | 575 | xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info)); |
bd5635a1 RP |
576 | |
577 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
bd5635a1 RP |
578 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
579 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
040b9597 | 580 | |
bd5635a1 RP |
581 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
582 | ||
784fd92b | 583 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; |
3624c875 FF |
584 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); |
585 | if (!DBX_TEXT_SECT (objfile)) | |
9342ecb9 JG |
586 | error ("Can't find .text section in symbol file"); |
587 | ||
bf18ac80 | 588 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); |
7da1e27d | 589 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); |
9342ecb9 | 590 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; |
3624c875 FF |
591 | |
592 | /* Read the string table and stash it away in the psymbol_obstack. It is | |
593 | only needed as long as we need to expand psymbols into full symbols, | |
594 | so when we blow away the psymbol the string table goes away as well. | |
595 | Note that gdb used to use the results of attempting to malloc the | |
596 | string table, based on the size it read, as a form of sanity check | |
597 | for botched byte swapping, on the theory that a byte swapped string | |
598 | table size would be so totally bogus that the malloc would fail. Now | |
599 | that we put in on the psymbol_obstack, we can't do this since gdb gets | |
600 | a fatal error (out of virtual memory) if the size is bogus. We can | |
69a272c4 FF |
601 | however at least check to see if the size is less than the size of |
602 | the size field itself, or larger than the size of the entire file. | |
603 | Note that all valid string tables have a size greater than zero, since | |
604 | the bytes used to hold the size are included in the count. */ | |
3624c875 | 605 | |
69a272c4 FF |
606 | if (STRING_TABLE_OFFSET == 0) |
607 | { | |
65ce5df4 JG |
608 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET |
609 | will never be zero, even when there is no string table. This | |
610 | would appear to be a bug in bfd. */ | |
69a272c4 FF |
611 | DBX_STRINGTAB_SIZE (objfile) = 0; |
612 | DBX_STRINGTAB (objfile) = NULL; | |
613 | } | |
614 | else | |
615 | { | |
2c7ab4ca | 616 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
69a272c4 FF |
617 | if (val < 0) |
618 | perror_with_name (name); | |
619 | ||
620 | memset ((PTR) size_temp, 0, sizeof (size_temp)); | |
621 | val = bfd_read ((PTR) size_temp, sizeof (size_temp), 1, sym_bfd); | |
622 | if (val < 0) | |
65ce5df4 JG |
623 | { |
624 | perror_with_name (name); | |
625 | } | |
626 | else if (val == 0) | |
627 | { | |
628 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
629 | EOF if there is no string table, and attempting to read the size | |
630 | from EOF will read zero bytes. */ | |
631 | DBX_STRINGTAB_SIZE (objfile) = 0; | |
632 | DBX_STRINGTAB (objfile) = NULL; | |
633 | } | |
634 | else | |
635 | { | |
636 | /* Read some data that would appear to be the string table size. | |
637 | If there really is a string table, then it is probably the right | |
638 | size. Byteswap if necessary and validate the size. Note that | |
639 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
640 | random data that happened to be at STRING_TABLE_OFFSET, because | |
641 | bfd can't tell us there is no string table, the sanity checks may | |
642 | or may not catch this. */ | |
643 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); | |
644 | ||
645 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) | |
646 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
647 | error ("ridiculous string table size (%d bytes).", | |
648 | DBX_STRINGTAB_SIZE (objfile)); | |
649 | ||
650 | DBX_STRINGTAB (objfile) = | |
651 | (char *) obstack_alloc (&objfile -> psymbol_obstack, | |
652 | DBX_STRINGTAB_SIZE (objfile)); | |
653 | ||
654 | /* Now read in the string table in one big gulp. */ | |
655 | ||
2c7ab4ca | 656 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
65ce5df4 JG |
657 | if (val < 0) |
658 | perror_with_name (name); | |
659 | val = bfd_read (DBX_STRINGTAB (objfile), DBX_STRINGTAB_SIZE (objfile), 1, | |
660 | sym_bfd); | |
661 | if (val != DBX_STRINGTAB_SIZE (objfile)) | |
662 | perror_with_name (name); | |
663 | } | |
69a272c4 | 664 | } |
bd5635a1 | 665 | } |
80d68b1d FF |
666 | |
667 | /* Perform any local cleanups required when we are done with a particular | |
668 | objfile. I.E, we are in the process of discarding all symbol information | |
669 | for an objfile, freeing up all memory held for it, and unlinking the | |
670 | objfile struct from the global list of known objfiles. */ | |
671 | ||
672 | static void | |
673 | dbx_symfile_finish (objfile) | |
674 | struct objfile *objfile; | |
675 | { | |
965a5c32 | 676 | if (objfile->sym_stab_info != NULL) |
80d68b1d | 677 | { |
965a5c32 | 678 | mfree (objfile -> md, objfile->sym_stab_info); |
80d68b1d FF |
679 | } |
680 | free_header_files (); | |
681 | } | |
682 | ||
bd5635a1 RP |
683 | \f |
684 | /* Buffer for reading the symbol table entries. */ | |
afe4ca15 | 685 | static struct internal_nlist symbuf[4096]; |
bd5635a1 RP |
686 | static int symbuf_idx; |
687 | static int symbuf_end; | |
688 | ||
9342ecb9 JG |
689 | /* Name of last function encountered. Used in Solaris to approximate |
690 | object file boundaries. */ | |
691 | static char *last_function_name; | |
692 | ||
bd5635a1 RP |
693 | /* The address in memory of the string table of the object file we are |
694 | reading (which might not be the "main" object file, but might be a | |
695 | shared library or some other dynamically loaded thing). This is set | |
696 | by read_dbx_symtab when building psymtabs, and by read_ofile_symtab | |
697 | when building symtabs, and is used only by next_symbol_text. */ | |
698 | static char *stringtab_global; | |
699 | ||
700 | /* Refill the symbol table input buffer | |
701 | and set the variables that control fetching entries from it. | |
702 | Reports an error if no data available. | |
703 | This function can read past the end of the symbol table | |
704 | (into the string table) but this does no harm. */ | |
705 | ||
7d9884b9 JG |
706 | static void |
707 | fill_symbuf (sym_bfd) | |
708 | bfd *sym_bfd; | |
bd5635a1 | 709 | { |
ac88ca20 | 710 | int nbytes = bfd_read ((PTR)symbuf, sizeof (symbuf), 1, sym_bfd); |
bd5635a1 | 711 | if (nbytes < 0) |
7d9884b9 | 712 | perror_with_name (bfd_get_filename (sym_bfd)); |
bd5635a1 RP |
713 | else if (nbytes == 0) |
714 | error ("Premature end of file reading symbol table"); | |
afe4ca15 | 715 | symbuf_end = nbytes / symbol_size; |
bd5635a1 | 716 | symbuf_idx = 0; |
bd5635a1 RP |
717 | } |
718 | ||
7d9884b9 | 719 | #define SWAP_SYMBOL(symp, abfd) \ |
bd5635a1 | 720 | { \ |
7d9884b9 | 721 | (symp)->n_strx = bfd_h_get_32(abfd, \ |
afe4ca15 | 722 | (unsigned char *)&(symp)->n_strx); \ |
7d9884b9 | 723 | (symp)->n_desc = bfd_h_get_16 (abfd, \ |
bd5635a1 | 724 | (unsigned char *)&(symp)->n_desc); \ |
7d9884b9 | 725 | (symp)->n_value = bfd_h_get_32 (abfd, \ |
bd5635a1 RP |
726 | (unsigned char *)&(symp)->n_value); \ |
727 | } | |
728 | ||
729 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
730 | that hasn't been swapped. Swap the symbol at the same time | |
731 | that symbuf_idx is incremented. */ | |
732 | ||
733 | /* dbx allows the text of a symbol name to be continued into the | |
734 | next symbol name! When such a continuation is encountered | |
735 | (a \ at the end of the text of a name) | |
736 | call this function to get the continuation. */ | |
737 | ||
021959e2 | 738 | static char * |
aab77d5f | 739 | dbx_next_symbol_text () |
bd5635a1 RP |
740 | { |
741 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 742 | fill_symbuf (symfile_bfd); |
bd5635a1 | 743 | symnum++; |
7d9884b9 | 744 | SWAP_SYMBOL(&symbuf[symbuf_idx], symfile_bfd); |
9342ecb9 JG |
745 | return symbuf[symbuf_idx++].n_strx + stringtab_global |
746 | + file_string_table_offset; | |
bd5635a1 RP |
747 | } |
748 | \f | |
749 | /* Initializes storage for all of the partial symbols that will be | |
750 | created by read_dbx_symtab and subsidiaries. */ | |
751 | ||
752 | static void | |
3624c875 | 753 | init_psymbol_list (objfile) |
021959e2 | 754 | struct objfile *objfile; |
bd5635a1 RP |
755 | { |
756 | /* Free any previously allocated psymbol lists. */ | |
021959e2 | 757 | if (objfile -> global_psymbols.list) |
ac88ca20 | 758 | mfree (objfile -> md, (PTR)objfile -> global_psymbols.list); |
021959e2 | 759 | if (objfile -> static_psymbols.list) |
ac88ca20 | 760 | mfree (objfile -> md, (PTR)objfile -> static_psymbols.list); |
bd5635a1 RP |
761 | |
762 | /* Current best guess is that there are approximately a twentieth | |
763 | of the total symbols (in a debugging file) are global or static | |
764 | oriented symbols */ | |
3624c875 FF |
765 | objfile -> global_psymbols.size = DBX_SYMCOUNT (objfile) / 10; |
766 | objfile -> static_psymbols.size = DBX_SYMCOUNT (objfile) / 10; | |
021959e2 | 767 | objfile -> global_psymbols.next = objfile -> global_psymbols.list = (struct partial_symbol *) |
318bf84f | 768 | xmmalloc (objfile -> md, objfile -> global_psymbols.size * sizeof (struct partial_symbol)); |
021959e2 | 769 | objfile -> static_psymbols.next = objfile -> static_psymbols.list = (struct partial_symbol *) |
318bf84f | 770 | xmmalloc (objfile -> md, objfile -> static_psymbols.size * sizeof (struct partial_symbol)); |
bd5635a1 RP |
771 | } |
772 | ||
773 | /* Initialize the list of bincls to contain none and have some | |
774 | allocated. */ | |
775 | ||
776 | static void | |
021959e2 | 777 | init_bincl_list (number, objfile) |
bd5635a1 | 778 | int number; |
021959e2 | 779 | struct objfile *objfile; |
bd5635a1 RP |
780 | { |
781 | bincls_allocated = number; | |
782 | next_bincl = bincl_list = (struct header_file_location *) | |
318bf84f | 783 | xmmalloc (objfile -> md, bincls_allocated * sizeof(struct header_file_location)); |
bd5635a1 RP |
784 | } |
785 | ||
786 | /* Add a bincl to the list. */ | |
787 | ||
788 | static void | |
789 | add_bincl_to_list (pst, name, instance) | |
790 | struct partial_symtab *pst; | |
791 | char *name; | |
792 | int instance; | |
793 | { | |
794 | if (next_bincl >= bincl_list + bincls_allocated) | |
795 | { | |
796 | int offset = next_bincl - bincl_list; | |
797 | bincls_allocated *= 2; | |
798 | bincl_list = (struct header_file_location *) | |
318bf84f | 799 | xmrealloc (pst->objfile->md, (char *)bincl_list, |
bd5635a1 RP |
800 | bincls_allocated * sizeof (struct header_file_location)); |
801 | next_bincl = bincl_list + offset; | |
802 | } | |
803 | next_bincl->pst = pst; | |
804 | next_bincl->instance = instance; | |
805 | next_bincl++->name = name; | |
806 | } | |
807 | ||
808 | /* Given a name, value pair, find the corresponding | |
809 | bincl in the list. Return the partial symtab associated | |
810 | with that header_file_location. */ | |
811 | ||
9bba3334 | 812 | static struct partial_symtab * |
bd5635a1 RP |
813 | find_corresponding_bincl_psymtab (name, instance) |
814 | char *name; | |
815 | int instance; | |
816 | { | |
817 | struct header_file_location *bincl; | |
818 | ||
819 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
820 | if (bincl->instance == instance | |
2e4964ad | 821 | && STREQ (name, bincl->name)) |
bd5635a1 RP |
822 | return bincl->pst; |
823 | ||
824 | return (struct partial_symtab *) 0; | |
825 | } | |
826 | ||
827 | /* Free the storage allocated for the bincl list. */ | |
828 | ||
829 | static void | |
021959e2 JG |
830 | free_bincl_list (objfile) |
831 | struct objfile *objfile; | |
bd5635a1 | 832 | { |
ac88ca20 | 833 | mfree (objfile -> md, (PTR)bincl_list); |
bd5635a1 RP |
834 | bincls_allocated = 0; |
835 | } | |
836 | ||
5801f348 JK |
837 | /* Scan a SunOs dynamic symbol table for symbols of interest and |
838 | add them to the minimal symbol table. */ | |
839 | ||
840 | static void | |
841 | read_dbx_dynamic_symtab (section_offsets, objfile) | |
842 | struct section_offsets *section_offsets; | |
843 | struct objfile *objfile; | |
844 | { | |
845 | bfd *abfd = objfile->obfd; | |
192b64e7 | 846 | struct cleanup *back_to; |
5801f348 | 847 | int counter; |
192b64e7 ILT |
848 | long dynsym_size; |
849 | long dynsym_count; | |
850 | asymbol **dynsyms; | |
851 | asymbol **symptr; | |
852 | arelent **relptr; | |
853 | long dynrel_size; | |
854 | long dynrel_count; | |
855 | arelent **dynrels; | |
5801f348 | 856 | CORE_ADDR sym_value; |
5801f348 JK |
857 | |
858 | /* Check that the symbol file has dynamic symbols that we know about. | |
859 | bfd_arch_unknown can happen if we are reading a sun3 symbol file | |
860 | on a sun4 host (and vice versa) and bfd is not configured | |
861 | --with-target=all. This would trigger an assertion in bfd/sunos.c, | |
862 | so we ignore the dynamic symbols in this case. */ | |
863 | if (bfd_get_flavour (abfd) != bfd_target_aout_flavour | |
864 | || (bfd_get_file_flags (abfd) & DYNAMIC) == 0 | |
192b64e7 | 865 | || bfd_get_arch (abfd) == bfd_arch_unknown) |
5801f348 JK |
866 | return; |
867 | ||
192b64e7 ILT |
868 | dynsym_size = bfd_get_dynamic_symtab_upper_bound (abfd); |
869 | if (dynsym_size < 0) | |
5801f348 JK |
870 | return; |
871 | ||
192b64e7 ILT |
872 | dynsyms = (asymbol **) xmalloc (dynsym_size); |
873 | back_to = make_cleanup (free, dynsyms); | |
874 | ||
875 | dynsym_count = bfd_canonicalize_dynamic_symtab (abfd, dynsyms); | |
876 | if (dynsym_count < 0) | |
877 | { | |
878 | do_cleanups (back_to); | |
879 | return; | |
880 | } | |
881 | ||
5801f348 JK |
882 | /* Enter dynamic symbols into the minimal symbol table |
883 | if this is a stripped executable. */ | |
884 | if (bfd_get_symcount (abfd) <= 0) | |
885 | { | |
192b64e7 ILT |
886 | symptr = dynsyms; |
887 | for (counter = 0; counter < dynsym_count; counter++, symptr++) | |
5801f348 | 888 | { |
192b64e7 ILT |
889 | asymbol *sym = *symptr; |
890 | asection *sec; | |
891 | int type; | |
892 | ||
893 | sym = *symptr; | |
894 | sym_value = sym->value; | |
5801f348 | 895 | |
192b64e7 ILT |
896 | sec = bfd_get_section (sym); |
897 | if (bfd_get_section_flags (abfd, sec) & SEC_CODE) | |
5801f348 | 898 | { |
192b64e7 ILT |
899 | sym_value += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
900 | type = N_TEXT; | |
5801f348 | 901 | } |
192b64e7 ILT |
902 | else if (bfd_get_section_flags (abfd, sec) & SEC_DATA) |
903 | { | |
904 | sym_value += ANOFFSET (section_offsets, SECT_OFF_DATA); | |
905 | type = N_DATA; | |
906 | } | |
907 | else if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) | |
5801f348 | 908 | { |
192b64e7 ILT |
909 | sym_value += ANOFFSET (section_offsets, SECT_OFF_BSS); |
910 | type = N_BSS; | |
5801f348 JK |
911 | } |
912 | else | |
192b64e7 ILT |
913 | continue; |
914 | ||
915 | if (sym->flags & BSF_GLOBAL) | |
916 | type |= N_EXT; | |
917 | ||
918 | record_minimal_symbol (bfd_asymbol_name (sym), sym_value, | |
919 | type, objfile); | |
5801f348 JK |
920 | } |
921 | } | |
922 | ||
923 | /* Symbols from shared libraries have a dynamic relocation entry | |
924 | that points to the associated slot in the procedure linkage table. | |
925 | We make a mininal symbol table entry with type mst_solib_trampoline | |
926 | at the address in the procedure linkage table. */ | |
192b64e7 ILT |
927 | dynrel_size = bfd_get_dynamic_reloc_upper_bound (abfd); |
928 | if (dynrel_size < 0) | |
929 | { | |
930 | do_cleanups (back_to); | |
931 | return; | |
932 | } | |
933 | ||
934 | dynrels = (arelent **) xmalloc (dynrel_size); | |
935 | make_cleanup (free, dynrels); | |
5801f348 | 936 | |
192b64e7 ILT |
937 | dynrel_count = bfd_canonicalize_dynamic_reloc (abfd, dynrels, dynsyms); |
938 | if (dynrel_count < 0) | |
939 | { | |
940 | do_cleanups (back_to); | |
941 | return; | |
942 | } | |
5801f348 | 943 | |
192b64e7 | 944 | for (counter = 0, relptr = dynrels; |
5801f348 | 945 | counter < dynrel_count; |
192b64e7 | 946 | counter++, relptr++) |
5801f348 | 947 | { |
192b64e7 | 948 | arelent *rel; |
5801f348 | 949 | |
192b64e7 | 950 | /* FIXME: This probably doesn't work on a Sun3. */ |
5801f348 | 951 | |
192b64e7 ILT |
952 | rel = *relptr; |
953 | if (rel->howto->type != RELOC_JMP_SLOT) | |
5801f348 | 954 | continue; |
5801f348 | 955 | |
192b64e7 ILT |
956 | prim_record_minimal_symbol (bfd_asymbol_name (*rel->sym_ptr_ptr), |
957 | rel->address, | |
5801f348 JK |
958 | mst_solib_trampoline, |
959 | objfile); | |
960 | } | |
192b64e7 ILT |
961 | |
962 | do_cleanups (back_to); | |
5801f348 JK |
963 | } |
964 | ||
bd5635a1 RP |
965 | /* Given pointers to an a.out symbol table in core containing dbx |
966 | style data, setup partial_symtab's describing each source file for | |
3624c875 FF |
967 | which debugging information is available. |
968 | SYMFILE_NAME is the name of the file we are reading from | |
2af231b8 JG |
969 | and SECTION_OFFSETS is the set of offsets for the various sections |
970 | of the file (a set of zeros if the mainline program). */ | |
bd5635a1 RP |
971 | |
972 | static void | |
2af231b8 JG |
973 | read_dbx_symtab (section_offsets, objfile, text_addr, text_size) |
974 | struct section_offsets *section_offsets; | |
7d9884b9 | 975 | struct objfile *objfile; |
bd5635a1 RP |
976 | CORE_ADDR text_addr; |
977 | int text_size; | |
978 | { | |
ac88ca20 | 979 | register struct internal_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
bd5635a1 | 980 | register char *namestring; |
bd5635a1 RP |
981 | int nsl; |
982 | int past_first_source_file = 0; | |
983 | CORE_ADDR last_o_file_start = 0; | |
0eb22669 | 984 | struct cleanup *back_to; |
7d9884b9 | 985 | bfd *abfd; |
bd5635a1 | 986 | |
bd5635a1 RP |
987 | /* Current partial symtab */ |
988 | struct partial_symtab *pst; | |
989 | ||
990 | /* List of current psymtab's include files */ | |
991 | char **psymtab_include_list; | |
992 | int includes_allocated; | |
993 | int includes_used; | |
994 | ||
995 | /* Index within current psymtab dependency list */ | |
996 | struct partial_symtab **dependency_list; | |
997 | int dependencies_used, dependencies_allocated; | |
998 | ||
9342ecb9 JG |
999 | /* FIXME. We probably want to change stringtab_global rather than add this |
1000 | while processing every symbol entry. FIXME. */ | |
1001 | file_string_table_offset = 0; | |
1002 | next_file_string_table_offset = 0; | |
1003 | ||
3624c875 | 1004 | stringtab_global = DBX_STRINGTAB (objfile); |
bd5635a1 RP |
1005 | |
1006 | pst = (struct partial_symtab *) 0; | |
1007 | ||
1008 | includes_allocated = 30; | |
1009 | includes_used = 0; | |
1010 | psymtab_include_list = (char **) alloca (includes_allocated * | |
1011 | sizeof (char *)); | |
1012 | ||
1013 | dependencies_allocated = 30; | |
1014 | dependencies_used = 0; | |
1015 | dependency_list = | |
1016 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1017 | sizeof (struct partial_symtab *)); | |
1018 | ||
bd5635a1 | 1019 | /* Init bincl list */ |
021959e2 | 1020 | init_bincl_list (20, objfile); |
0eb22669 | 1021 | back_to = make_cleanup (free_bincl_list, objfile); |
bd5635a1 | 1022 | |
3416d90b | 1023 | last_source_file = NULL; |
bd5635a1 | 1024 | |
9d2b8d50 | 1025 | lowest_text_address = (CORE_ADDR)-1; |
bd5635a1 | 1026 | |
7d9884b9 JG |
1027 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ |
1028 | abfd = objfile->obfd; | |
bd5635a1 | 1029 | symbuf_end = symbuf_idx = 0; |
aab77d5f | 1030 | next_symbol_text_func = dbx_next_symbol_text; |
bd5635a1 | 1031 | |
3624c875 | 1032 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
bd5635a1 RP |
1033 | { |
1034 | /* Get the symbol for this run and pull out some info */ | |
1035 | QUIT; /* allow this to be interruptable */ | |
1036 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1037 | fill_symbuf (abfd); |
bd5635a1 RP |
1038 | bufp = &symbuf[symbuf_idx++]; |
1039 | ||
1040 | /* | |
1041 | * Special case to speed up readin. | |
1042 | */ | |
1043 | if (bufp->n_type == (unsigned char)N_SLINE) continue; | |
1044 | ||
7d9884b9 | 1045 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 RP |
1046 | |
1047 | /* Ok. There is a lot of code duplicated in the rest of this | |
1048 | switch statement (for efficiency reasons). Since I don't | |
1049 | like duplicating code, I will do my penance here, and | |
1050 | describe the code which is duplicated: | |
1051 | ||
1052 | *) The assignment to namestring. | |
1053 | *) The call to strchr. | |
1054 | *) The addition of a partial symbol the the two partial | |
1055 | symbol lists. This last is a large section of code, so | |
1056 | I've imbedded it in the following macro. | |
1057 | */ | |
1058 | ||
1059 | /* Set namestring based on bufp. If the string table index is invalid, | |
1060 | give a fake name, and print a single error message per symbol file read, | |
1061 | rather than abort the symbol reading or flood the user with messages. */ | |
9342ecb9 JG |
1062 | |
1063 | /*FIXME: Too many adds and indirections in here for the inner loop. */ | |
bd5635a1 | 1064 | #define SET_NAMESTRING()\ |
9342ecb9 JG |
1065 | if (((unsigned)bufp->n_strx + file_string_table_offset) >= \ |
1066 | DBX_STRINGTAB_SIZE (objfile)) { \ | |
51b80b00 | 1067 | complain (&string_table_offset_complaint, symnum); \ |
5801f348 | 1068 | namestring = "<bad string table offset>"; \ |
bd5635a1 | 1069 | } else \ |
9342ecb9 JG |
1070 | namestring = bufp->n_strx + file_string_table_offset + \ |
1071 | DBX_STRINGTAB (objfile) | |
bd5635a1 | 1072 | |
7e258d18 PB |
1073 | #define CUR_SYMBOL_TYPE bufp->n_type |
1074 | #define CUR_SYMBOL_VALUE bufp->n_value | |
1075 | #define DBXREAD_ONLY | |
2af231b8 JG |
1076 | #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\ |
1077 | start_psymtab(ofile, secoff, fname, low, symoff, global_syms, static_syms) | |
7e258d18 PB |
1078 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)\ |
1079 | end_psymtab(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) | |
aab77d5f | 1080 | |
7e258d18 | 1081 | #include "partial-stab.h" |
bd5635a1 RP |
1082 | } |
1083 | ||
1084 | /* If there's stuff to be cleaned up, clean it up. */ | |
3624c875 | 1085 | if (DBX_SYMCOUNT (objfile) > 0 /* We have some syms */ |
9342ecb9 JG |
1086 | /*FIXME, does this have a bug at start address 0? */ |
1087 | && last_o_file_start | |
3624c875 FF |
1088 | && objfile -> ei.entry_point < bufp->n_value |
1089 | && objfile -> ei.entry_point >= last_o_file_start) | |
bd5635a1 | 1090 | { |
3624c875 FF |
1091 | objfile -> ei.entry_file_lowpc = last_o_file_start; |
1092 | objfile -> ei.entry_file_highpc = bufp->n_value; | |
bd5635a1 RP |
1093 | } |
1094 | ||
1095 | if (pst) | |
1096 | { | |
1097 | end_psymtab (pst, psymtab_include_list, includes_used, | |
9d2b8d50 JK |
1098 | symnum * symbol_size, |
1099 | (lowest_text_address == (CORE_ADDR)-1 | |
2fe3b329 PS |
1100 | ? (text_addr + section_offsets->offsets[SECT_OFF_TEXT]) |
1101 | : lowest_text_address) | |
9d2b8d50 | 1102 | + text_size, |
7e258d18 | 1103 | dependency_list, dependencies_used); |
bd5635a1 RP |
1104 | } |
1105 | ||
0eb22669 | 1106 | do_cleanups (back_to); |
bd5635a1 RP |
1107 | } |
1108 | ||
4a35d6e9 FF |
1109 | /* Allocate and partially fill a partial symtab. It will be |
1110 | completely filled at the end of the symbol list. | |
1111 | ||
1112 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1113 | is the address relative to which its symbols are (incremental) or 0 | |
1114 | (normal). */ | |
1115 | ||
bd5635a1 | 1116 | |
7e258d18 | 1117 | struct partial_symtab * |
2af231b8 | 1118 | start_psymtab (objfile, section_offsets, |
bd5635a1 | 1119 | filename, textlow, ldsymoff, global_syms, static_syms) |
7d9884b9 | 1120 | struct objfile *objfile; |
2af231b8 | 1121 | struct section_offsets *section_offsets; |
bd5635a1 RP |
1122 | char *filename; |
1123 | CORE_ADDR textlow; | |
1124 | int ldsymoff; | |
1125 | struct partial_symbol *global_syms; | |
1126 | struct partial_symbol *static_syms; | |
1127 | { | |
1128 | struct partial_symtab *result = | |
2af231b8 | 1129 | start_psymtab_common(objfile, section_offsets, |
021959e2 | 1130 | filename, textlow, global_syms, static_syms); |
bd5635a1 | 1131 | |
021959e2 JG |
1132 | result->read_symtab_private = (char *) |
1133 | obstack_alloc (&objfile -> psymbol_obstack, sizeof (struct symloc)); | |
1134 | LDSYMOFF(result) = ldsymoff; | |
bd5635a1 | 1135 | result->read_symtab = dbx_psymtab_to_symtab; |
9342ecb9 JG |
1136 | SYMBOL_SIZE(result) = symbol_size; |
1137 | SYMBOL_OFFSET(result) = symbol_table_offset; | |
1138 | STRING_OFFSET(result) = string_table_offset; | |
1139 | FILE_STRING_OFFSET(result) = file_string_table_offset; | |
bd5635a1 | 1140 | |
2af231b8 JG |
1141 | /* If we're handling an ELF file, drag some section-relocation info |
1142 | for this source file out of the ELF symbol table, to compensate for | |
1143 | Sun brain death. This replaces the section_offsets in this psymtab, | |
1144 | if successful. */ | |
1145 | elfstab_offset_sections (objfile, result); | |
1146 | ||
2e4964ad FF |
1147 | /* Deduce the source language from the filename for this psymtab. */ |
1148 | psymtab_language = deduce_language_from_filename (filename); | |
1149 | ||
bd5635a1 RP |
1150 | return result; |
1151 | } | |
1152 | ||
cbba020f PS |
1153 | /* Close off the current usage of PST. |
1154 | Returns PST or NULL if the partial symtab was empty and thrown away. | |
bd5635a1 | 1155 | |
cbba020f | 1156 | FIXME: List variables and peculiarities of same. */ |
bd5635a1 | 1157 | |
cbba020f | 1158 | struct partial_symtab * |
bd5635a1 | 1159 | end_psymtab (pst, include_list, num_includes, capping_symbol_offset, |
7e258d18 | 1160 | capping_text, dependency_list, number_dependencies) |
bd5635a1 RP |
1161 | struct partial_symtab *pst; |
1162 | char **include_list; | |
1163 | int num_includes; | |
1164 | int capping_symbol_offset; | |
1165 | CORE_ADDR capping_text; | |
1166 | struct partial_symtab **dependency_list; | |
1167 | int number_dependencies; | |
bd5635a1 RP |
1168 | { |
1169 | int i; | |
9342ecb9 | 1170 | struct partial_symtab *p1; |
021959e2 | 1171 | struct objfile *objfile = pst -> objfile; |
bd5635a1 | 1172 | |
7e258d18 PB |
1173 | if (capping_symbol_offset != -1) |
1174 | LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst); | |
bd5635a1 RP |
1175 | pst->texthigh = capping_text; |
1176 | ||
6545c6a0 | 1177 | #ifdef N_SO_ADDRESS_MAYBE_MISSING |
9342ecb9 JG |
1178 | /* Under Solaris, the N_SO symbols always have a value of 0, |
1179 | instead of the usual address of the .o file. Therefore, | |
1180 | we have to do some tricks to fill in texthigh and textlow. | |
1181 | The first trick is in partial-stab.h: if we see a static | |
1182 | or global function, and the textlow for the current pst | |
1183 | is still 0, then we use that function's address for | |
1184 | the textlow of the pst. | |
1185 | ||
1186 | Now, to fill in texthigh, we remember the last function seen | |
1187 | in the .o file (also in partial-stab.h). Also, there's a hack in | |
1188 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field | |
1189 | to here via the misc_info field. Therefore, we can fill in | |
1190 | a reliable texthigh by taking the address plus size of the | |
1191 | last function in the file. | |
1192 | ||
1193 | Unfortunately, that does not cover the case where the last function | |
1194 | in the file is static. See the paragraph below for more comments | |
1195 | on this situation. | |
1196 | ||
1197 | Finally, if we have a valid textlow for the current file, we run | |
1198 | down the partial_symtab_list filling in previous texthighs that | |
1199 | are still unknown. */ | |
1200 | ||
bcbf9559 | 1201 | if (pst->texthigh == 0 && last_function_name) { |
9342ecb9 JG |
1202 | char *p; |
1203 | int n; | |
1204 | struct minimal_symbol *minsym; | |
1205 | ||
1206 | p = strchr (last_function_name, ':'); | |
1207 | if (p == NULL) | |
1208 | p = last_function_name; | |
1209 | n = p - last_function_name; | |
1210 | p = alloca (n + 1); | |
1211 | strncpy (p, last_function_name, n); | |
1212 | p[n] = 0; | |
1213 | ||
1214 | minsym = lookup_minimal_symbol (p, objfile); | |
1215 | ||
1216 | if (minsym) { | |
2e4964ad | 1217 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + |
5573d7d4 | 1218 | (long) MSYMBOL_INFO (minsym); |
9342ecb9 JG |
1219 | } else { |
1220 | /* This file ends with a static function, and it's | |
1221 | difficult to imagine how hard it would be to track down | |
1222 | the elf symbol. Luckily, most of the time no one will notice, | |
1223 | since the next file will likely be compiled with -g, so | |
1224 | the code below will copy the first fuction's start address | |
1225 | back to our texthigh variable. (Also, if this file is the | |
1226 | last one in a dynamically linked program, texthigh already | |
1227 | has the right value.) If the next file isn't compiled | |
1228 | with -g, then the last function in this file winds up owning | |
1229 | all of the text space up to the next -g file, or the end (minus | |
1230 | shared libraries). This only matters for single stepping, | |
1231 | and even then it will still work, except that it will single | |
1232 | step through all of the covered functions, instead of setting | |
1233 | breakpoints around them as it usualy does. This makes it | |
1234 | pretty slow, but at least it doesn't fail. | |
1235 | ||
1236 | We can fix this with a fairly big change to bfd, but we need | |
1237 | to coordinate better with Cygnus if we want to do that. FIXME. */ | |
1238 | } | |
1239 | last_function_name = NULL; | |
1240 | } | |
1241 | ||
1242 | /* this test will be true if the last .o file is only data */ | |
1243 | if (pst->textlow == 0) | |
6545c6a0 JK |
1244 | /* This loses if the text section really starts at address zero |
1245 | (generally true when we are debugging a .o file, for example). | |
9d2b8d50 | 1246 | That is why this whole thing is inside N_SO_ADDRESS_MAYBE_MISSING. */ |
9342ecb9 JG |
1247 | pst->textlow = pst->texthigh; |
1248 | ||
bcbf9559 JG |
1249 | /* If we know our own starting text address, then walk through all other |
1250 | psymtabs for this objfile, and if any didn't know their ending text | |
1251 | address, set it to our starting address. Take care to not set our | |
1252 | own ending address to our starting address, nor to set addresses on | |
1253 | `dependency' files that have both textlow and texthigh zero. */ | |
9342ecb9 JG |
1254 | if (pst->textlow) { |
1255 | ALL_OBJFILE_PSYMTABS (objfile, p1) { | |
bcbf9559 | 1256 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) { |
9342ecb9 JG |
1257 | p1->texthigh = pst->textlow; |
1258 | /* if this file has only data, then make textlow match texthigh */ | |
1259 | if (p1->textlow == 0) | |
1260 | p1->textlow = p1->texthigh; | |
1261 | } | |
1262 | } | |
1263 | } | |
1264 | ||
1265 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
9d2b8d50 | 1266 | #endif /* N_SO_ADDRESS_MAYBE_MISSING. */ |
9342ecb9 | 1267 | |
bd5635a1 | 1268 | pst->n_global_syms = |
021959e2 | 1269 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); |
bd5635a1 | 1270 | pst->n_static_syms = |
021959e2 | 1271 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); |
bd5635a1 RP |
1272 | |
1273 | pst->number_of_dependencies = number_dependencies; | |
1274 | if (number_dependencies) | |
1275 | { | |
1276 | pst->dependencies = (struct partial_symtab **) | |
021959e2 | 1277 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 | 1278 | number_dependencies * sizeof (struct partial_symtab *)); |
7e258d18 | 1279 | memcpy (pst->dependencies, dependency_list, |
bd5635a1 RP |
1280 | number_dependencies * sizeof (struct partial_symtab *)); |
1281 | } | |
1282 | else | |
1283 | pst->dependencies = 0; | |
1284 | ||
1285 | for (i = 0; i < num_includes; i++) | |
1286 | { | |
bd5635a1 | 1287 | struct partial_symtab *subpst = |
021959e2 | 1288 | allocate_psymtab (include_list[i], objfile); |
7d9884b9 | 1289 | |
2af231b8 | 1290 | subpst->section_offsets = pst->section_offsets; |
021959e2 JG |
1291 | subpst->read_symtab_private = |
1292 | (char *) obstack_alloc (&objfile->psymbol_obstack, | |
1293 | sizeof (struct symloc)); | |
4a35d6e9 FF |
1294 | LDSYMOFF(subpst) = |
1295 | LDSYMLEN(subpst) = | |
bd5635a1 RP |
1296 | subpst->textlow = |
1297 | subpst->texthigh = 0; | |
1298 | ||
3f83182d JG |
1299 | /* We could save slight bits of space by only making one of these, |
1300 | shared by the entire set of include files. FIXME-someday. */ | |
bd5635a1 | 1301 | subpst->dependencies = (struct partial_symtab **) |
021959e2 | 1302 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 RP |
1303 | sizeof (struct partial_symtab *)); |
1304 | subpst->dependencies[0] = pst; | |
1305 | subpst->number_of_dependencies = 1; | |
1306 | ||
1307 | subpst->globals_offset = | |
1308 | subpst->n_global_syms = | |
1309 | subpst->statics_offset = | |
1310 | subpst->n_static_syms = 0; | |
1311 | ||
1312 | subpst->readin = 0; | |
9a822037 | 1313 | subpst->symtab = 0; |
2707b48a | 1314 | subpst->read_symtab = pst->read_symtab; |
bd5635a1 RP |
1315 | } |
1316 | ||
021959e2 | 1317 | sort_pst_symbols (pst); |
bd5635a1 | 1318 | |
f9623881 JG |
1319 | /* If there is already a psymtab or symtab for a file of this name, remove it. |
1320 | (If there is a symtab, more drastic things also happen.) | |
1321 | This happens in VxWorks. */ | |
1322 | free_named_symtabs (pst->filename); | |
1323 | ||
7d9884b9 | 1324 | if (num_includes == 0 |
5801f348 JK |
1325 | && number_dependencies == 0 |
1326 | && pst->n_global_syms == 0 | |
1327 | && pst->n_static_syms == 0) | |
1328 | { | |
1329 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
1330 | it is on the obstack, but we can forget to chain it on the list. */ | |
1331 | /* Empty psymtabs happen as a result of header files which don't have | |
1332 | any symbols in them. There can be a lot of them. But this check | |
1333 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
1334 | is not empty, but we don't realize that. Fixing that without slowing | |
1335 | things down might be tricky. */ | |
1336 | struct partial_symtab *prev_pst; | |
1337 | ||
1338 | /* First, snip it out of the psymtab chain */ | |
1339 | ||
1340 | if (pst->objfile->psymtabs == pst) | |
1341 | pst->objfile->psymtabs = pst->next; | |
1342 | else | |
1343 | for (prev_pst = pst->objfile->psymtabs; prev_pst; prev_pst = pst->next) | |
1344 | if (prev_pst->next == pst) | |
1345 | prev_pst->next = pst->next; | |
318bf84f | 1346 | |
5801f348 | 1347 | /* Next, put it on a free list for recycling */ |
318bf84f | 1348 | |
5801f348 JK |
1349 | pst->next = pst->objfile->free_psymtabs; |
1350 | pst->objfile->free_psymtabs = pst; | |
cbba020f | 1351 | |
5801f348 JK |
1352 | /* Indicate that psymtab was thrown away. */ |
1353 | pst = (struct partial_symtab *)NULL; | |
1354 | } | |
cbba020f | 1355 | return pst; |
bd5635a1 RP |
1356 | } |
1357 | \f | |
1358 | static void | |
4c07f28d | 1359 | dbx_psymtab_to_symtab_1 (pst) |
bd5635a1 | 1360 | struct partial_symtab *pst; |
bd5635a1 RP |
1361 | { |
1362 | struct cleanup *old_chain; | |
1363 | int i; | |
1364 | ||
1365 | if (!pst) | |
1366 | return; | |
1367 | ||
1368 | if (pst->readin) | |
1369 | { | |
199b2450 | 1370 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
bd5635a1 RP |
1371 | pst->filename); |
1372 | return; | |
1373 | } | |
1374 | ||
afe4ca15 | 1375 | /* Read in all partial symtabs on which this one is dependent */ |
bd5635a1 RP |
1376 | for (i = 0; i < pst->number_of_dependencies; i++) |
1377 | if (!pst->dependencies[i]->readin) | |
1378 | { | |
1379 | /* Inform about additional files that need to be read in. */ | |
1380 | if (info_verbose) | |
1381 | { | |
199b2450 | 1382 | fputs_filtered (" ", gdb_stdout); |
bd5635a1 | 1383 | wrap_here (""); |
199b2450 | 1384 | fputs_filtered ("and ", gdb_stdout); |
bd5635a1 RP |
1385 | wrap_here (""); |
1386 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
1387 | wrap_here (""); /* Flush output */ | |
199b2450 | 1388 | gdb_flush (gdb_stdout); |
bd5635a1 | 1389 | } |
4c07f28d | 1390 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); |
bd5635a1 RP |
1391 | } |
1392 | ||
4a35d6e9 | 1393 | if (LDSYMLEN(pst)) /* Otherwise it's a dummy */ |
bd5635a1 RP |
1394 | { |
1395 | /* Init stuff necessary for reading in symbols */ | |
3416d90b | 1396 | stabsread_init (); |
c0302457 | 1397 | buildsym_init (); |
bd5635a1 | 1398 | old_chain = make_cleanup (really_free_pendings, 0); |
9342ecb9 | 1399 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
4c07f28d FF |
1400 | symbol_size = SYMBOL_SIZE (pst); |
1401 | ||
1402 | /* Read in this file's symbols */ | |
2c7ab4ca | 1403 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); |
574dac8e | 1404 | read_ofile_symtab (pst); |
9404978d | 1405 | sort_symtab_syms (pst->symtab); |
bd5635a1 RP |
1406 | |
1407 | do_cleanups (old_chain); | |
1408 | } | |
1409 | ||
1410 | pst->readin = 1; | |
1411 | } | |
1412 | ||
ac88ca20 JG |
1413 | /* Read in all of the symbols for a given psymtab for real. |
1414 | Be verbose about it if the user wants that. */ | |
1415 | ||
bd5635a1 RP |
1416 | static void |
1417 | dbx_psymtab_to_symtab (pst) | |
1418 | struct partial_symtab *pst; | |
1419 | { | |
bd5635a1 | 1420 | bfd *sym_bfd; |
bd5635a1 RP |
1421 | |
1422 | if (!pst) | |
1423 | return; | |
1424 | ||
1425 | if (pst->readin) | |
1426 | { | |
199b2450 | 1427 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
bd5635a1 RP |
1428 | pst->filename); |
1429 | return; | |
1430 | } | |
1431 | ||
4a35d6e9 | 1432 | if (LDSYMLEN(pst) || pst->number_of_dependencies) |
bd5635a1 RP |
1433 | { |
1434 | /* Print the message now, before reading the string table, | |
1435 | to avoid disconcerting pauses. */ | |
1436 | if (info_verbose) | |
1437 | { | |
1438 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
199b2450 | 1439 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
1440 | } |
1441 | ||
7d9884b9 | 1442 | sym_bfd = pst->objfile->obfd; |
bd5635a1 | 1443 | |
aab77d5f PB |
1444 | next_symbol_text_func = dbx_next_symbol_text; |
1445 | ||
4c07f28d | 1446 | dbx_psymtab_to_symtab_1 (pst); |
bd5635a1 RP |
1447 | |
1448 | /* Match with global symbols. This only needs to be done once, | |
1449 | after all of the symtabs and dependencies have been read in. */ | |
021959e2 | 1450 | scan_file_globals (pst->objfile); |
bd5635a1 | 1451 | |
bd5635a1 RP |
1452 | /* Finish up the debug error message. */ |
1453 | if (info_verbose) | |
1454 | printf_filtered ("done.\n"); | |
1455 | } | |
1456 | } | |
1457 | ||
574dac8e | 1458 | /* Read in a defined section of a specific object file's symbols. */ |
9342ecb9 | 1459 | |
574dac8e JK |
1460 | static void |
1461 | read_ofile_symtab (pst) | |
1462 | struct partial_symtab *pst; | |
bd5635a1 RP |
1463 | { |
1464 | register char *namestring; | |
7d9884b9 | 1465 | register struct internal_nlist *bufp; |
bd5635a1 | 1466 | unsigned char type; |
afe4ca15 | 1467 | unsigned max_symnum; |
7d9884b9 | 1468 | register bfd *abfd; |
574dac8e JK |
1469 | struct objfile *objfile; |
1470 | int sym_offset; /* Offset to start of symbols to read */ | |
1471 | int sym_size; /* Size of symbols to read */ | |
1472 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
1473 | int text_size; /* Size of text segment for symbols */ | |
1474 | struct section_offsets *section_offsets; | |
1475 | ||
1476 | objfile = pst->objfile; | |
1477 | sym_offset = LDSYMOFF(pst); | |
1478 | sym_size = LDSYMLEN(pst); | |
1479 | text_offset = pst->textlow; | |
1480 | text_size = pst->texthigh - pst->textlow; | |
1481 | section_offsets = pst->section_offsets; | |
7d9884b9 | 1482 | |
021959e2 | 1483 | current_objfile = objfile; |
3416d90b | 1484 | subfile_stack = NULL; |
bd5635a1 | 1485 | |
3624c875 | 1486 | stringtab_global = DBX_STRINGTAB (objfile); |
3416d90b | 1487 | last_source_file = NULL; |
bd5635a1 | 1488 | |
7d9884b9 JG |
1489 | abfd = objfile->obfd; |
1490 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ | |
bd5635a1 RP |
1491 | symbuf_end = symbuf_idx = 0; |
1492 | ||
1493 | /* It is necessary to actually read one symbol *before* the start | |
1494 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
1495 | occurs before the N_SO symbol. | |
1496 | ||
1497 | Detecting this in read_dbx_symtab | |
1498 | would slow down initial readin, so we look for it here instead. */ | |
9342ecb9 | 1499 | if (!processing_acc_compilation && sym_offset >= (int)symbol_size) |
bd5635a1 | 1500 | { |
2c7ab4ca | 1501 | bfd_seek (symfile_bfd, sym_offset - symbol_size, SEEK_CUR); |
7d9884b9 | 1502 | fill_symbuf (abfd); |
bd5635a1 | 1503 | bufp = &symbuf[symbuf_idx++]; |
7d9884b9 | 1504 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 | 1505 | |
afe4ca15 | 1506 | SET_NAMESTRING (); |
bd5635a1 | 1507 | |
1aed6766 SG |
1508 | processing_gcc_compilation = 0; |
1509 | if (bufp->n_type == N_TEXT) | |
1510 | { | |
db2302cb PS |
1511 | const char *tempstring = namestring; |
1512 | ||
2e4964ad | 1513 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1514 | processing_gcc_compilation = 1; |
2e4964ad | 1515 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1516 | processing_gcc_compilation = 2; |
db2302cb PS |
1517 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) |
1518 | ++tempstring; | |
1519 | if (STREQN (tempstring, "__gnu_compiled", 14)) | |
1520 | processing_gcc_compilation = 2; | |
1aed6766 | 1521 | } |
3416d90b FF |
1522 | |
1523 | /* Try to select a C++ demangling based on the compilation unit | |
1524 | producer. */ | |
1525 | ||
1526 | if (processing_gcc_compilation) | |
1527 | { | |
1aed6766 | 1528 | if (AUTO_DEMANGLING) |
3416d90b FF |
1529 | { |
1530 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1531 | } | |
3416d90b | 1532 | } |
bd5635a1 RP |
1533 | } |
1534 | else | |
1535 | { | |
1536 | /* The N_SO starting this symtab is the first symbol, so we | |
1537 | better not check the symbol before it. I'm not this can | |
1538 | happen, but it doesn't hurt to check for it. */ | |
2c7ab4ca | 1539 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); |
bd5635a1 RP |
1540 | processing_gcc_compilation = 0; |
1541 | } | |
1542 | ||
1543 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1544 | fill_symbuf (abfd); |
bd5635a1 RP |
1545 | bufp = &symbuf[symbuf_idx]; |
1546 | if (bufp->n_type != (unsigned char)N_SO) | |
1547 | error("First symbol in segment of executable not a source symbol"); | |
1548 | ||
afe4ca15 JG |
1549 | max_symnum = sym_size / symbol_size; |
1550 | ||
bd5635a1 | 1551 | for (symnum = 0; |
afe4ca15 | 1552 | symnum < max_symnum; |
bd5635a1 RP |
1553 | symnum++) |
1554 | { | |
1555 | QUIT; /* Allow this to be interruptable */ | |
1556 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1557 | fill_symbuf(abfd); |
bd5635a1 | 1558 | bufp = &symbuf[symbuf_idx++]; |
7d9884b9 | 1559 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 | 1560 | |
c0302457 | 1561 | type = bufp->n_type; |
bd5635a1 | 1562 | |
afe4ca15 | 1563 | SET_NAMESTRING (); |
bd5635a1 | 1564 | |
7d9884b9 | 1565 | if (type & N_STAB) { |
c55e6167 | 1566 | process_one_symbol (type, bufp->n_desc, bufp->n_value, |
2af231b8 | 1567 | namestring, section_offsets, objfile); |
7d9884b9 | 1568 | } |
bd5635a1 RP |
1569 | /* We skip checking for a new .o or -l file; that should never |
1570 | happen in this routine. */ | |
1aed6766 | 1571 | else if (type == N_TEXT) |
3416d90b FF |
1572 | { |
1573 | /* I don't think this code will ever be executed, because | |
1574 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
1575 | the N_SO symbol which starts this source file. | |
1576 | However, there is no reason not to accept | |
1577 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
1aed6766 | 1578 | |
2e4964ad | 1579 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1580 | processing_gcc_compilation = 1; |
2e4964ad | 1581 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 SG |
1582 | processing_gcc_compilation = 2; |
1583 | ||
1aed6766 | 1584 | if (AUTO_DEMANGLING) |
3416d90b FF |
1585 | { |
1586 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1587 | } | |
3416d90b | 1588 | } |
bd5635a1 RP |
1589 | else if (type & N_EXT || type == (unsigned char)N_TEXT |
1590 | || type == (unsigned char)N_NBTEXT | |
0c4d2cc2 | 1591 | ) { |
bd5635a1 RP |
1592 | /* Global symbol: see if we came across a dbx defintion for |
1593 | a corresponding symbol. If so, store the value. Remove | |
1594 | syms from the chain when their values are stored, but | |
1595 | search the whole chain, as there may be several syms from | |
1596 | different files with the same name. */ | |
1597 | /* This is probably not true. Since the files will be read | |
1598 | in one at a time, each reference to a global symbol will | |
1599 | be satisfied in each file as it appears. So we skip this | |
1600 | section. */ | |
1601 | ; | |
0c4d2cc2 | 1602 | } |
bd5635a1 | 1603 | } |
9404978d | 1604 | |
021959e2 | 1605 | current_objfile = NULL; |
9342ecb9 JG |
1606 | |
1607 | /* In a Solaris elf file, this variable, which comes from the | |
1608 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
1609 | which comes from pst->textlow is correct. */ | |
1610 | if (last_source_start_addr == 0) | |
1611 | last_source_start_addr = text_offset; | |
1612 | ||
574dac8e JK |
1613 | pst->symtab = end_symtab (text_offset + text_size, 0, 0, objfile, |
1614 | SECT_OFF_TEXT); | |
3416d90b | 1615 | end_stabs (); |
bd5635a1 | 1616 | } |
574dac8e | 1617 | |
bd5635a1 | 1618 | \f |
c55e6167 JG |
1619 | /* This handles a single symbol from the symbol-file, building symbols |
1620 | into a GDB symtab. It takes these arguments and an implicit argument. | |
1621 | ||
1622 | TYPE is the type field of the ".stab" symbol entry. | |
1623 | DESC is the desc field of the ".stab" entry. | |
1624 | VALU is the value field of the ".stab" entry. | |
1625 | NAME is the symbol name, in our address space. | |
2af231b8 JG |
1626 | SECTION_OFFSETS is a set of amounts by which the sections of this object |
1627 | file were relocated when it was loaded into memory. | |
1628 | All symbols that refer | |
1629 | to memory locations need to be offset by these amounts. | |
9342ecb9 | 1630 | OBJFILE is the object file from which we are reading symbols. |
c55e6167 JG |
1631 | It is used in end_symtab. */ |
1632 | ||
7e258d18 | 1633 | void |
2af231b8 | 1634 | process_one_symbol (type, desc, valu, name, section_offsets, objfile) |
bd5635a1 RP |
1635 | int type, desc; |
1636 | CORE_ADDR valu; | |
1637 | char *name; | |
2af231b8 | 1638 | struct section_offsets *section_offsets; |
9342ecb9 | 1639 | struct objfile *objfile; |
bd5635a1 | 1640 | { |
a5e6391b JK |
1641 | #ifdef SUN_FIXED_LBRAC_BUG |
1642 | /* If SUN_FIXED_LBRAC_BUG is defined, then it tells us whether we need | |
1643 | to correct the address of N_LBRAC's. If it is not defined, then | |
1644 | we never need to correct the addresses. */ | |
1645 | ||
0cf9329b | 1646 | /* This records the last pc address we've seen. We depend on there being |
bd5635a1 RP |
1647 | an SLINE or FUN or SO before the first LBRAC, since the variable does |
1648 | not get reset in between reads of different symbol files. */ | |
1649 | static CORE_ADDR last_pc_address; | |
a5e6391b | 1650 | #endif |
8357834f | 1651 | |
bd5635a1 | 1652 | register struct context_stack *new; |
9342ecb9 JG |
1653 | /* This remembers the address of the start of a function. It is used |
1654 | because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries are | |
1655 | relative to the current function's start address. On systems | |
2af231b8 JG |
1656 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, and is |
1657 | used to relocate these symbol types rather than SECTION_OFFSETS. */ | |
9342ecb9 | 1658 | static CORE_ADDR function_start_offset; |
bd5635a1 | 1659 | |
574dac8e JK |
1660 | /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are relative |
1661 | to the function start address. */ | |
1662 | int block_address_function_relative; | |
1663 | ||
8357834f | 1664 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this source |
b8ec9a79 | 1665 | file. Used to detect the SunPRO solaris compiler. */ |
4d57c599 | 1666 | static int n_opt_found; |
8357834f | 1667 | |
b8ec9a79 JK |
1668 | /* The stab type used for the definition of the last function. |
1669 | N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */ | |
1670 | static int function_stab_type = 0; | |
1671 | ||
9d2b8d50 JK |
1672 | /* This is true for Solaris (and all other systems which put stabs |
1673 | in sections, hopefully, since it would be silly to do things | |
1674 | differently from Solaris), and false for SunOS4 and other a.out | |
1675 | file formats. */ | |
574dac8e | 1676 | block_address_function_relative = |
9d2b8d50 JK |
1677 | ((0 == strncmp (bfd_get_target (objfile->obfd), "elf", 3)) |
1678 | || (0 == strncmp (bfd_get_target (objfile->obfd), "som", 3)) | |
1679 | || (0 == strncmp (bfd_get_target (objfile->obfd), "coff", 4))); | |
574dac8e JK |
1680 | |
1681 | if (!block_address_function_relative) | |
1682 | /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the | |
1683 | function start address, so just use the text offset. */ | |
1684 | function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
51b80b00 | 1685 | |
bd5635a1 RP |
1686 | /* Something is wrong if we see real data before |
1687 | seeing a source file name. */ | |
1688 | ||
3416d90b | 1689 | if (last_source_file == NULL && type != (unsigned char)N_SO) |
bd5635a1 | 1690 | { |
a5e6391b JK |
1691 | /* Ignore any symbols which appear before an N_SO symbol. Currently |
1692 | no one puts symbols there, but we should deal gracefully with the | |
1693 | case. A complain()t might be in order (if !IGNORE_SYMBOL (type)), | |
1694 | but this should not be an error (). */ | |
1695 | return; | |
bd5635a1 RP |
1696 | } |
1697 | ||
1698 | switch (type) | |
1699 | { | |
1700 | case N_FUN: | |
1701 | case N_FNAME: | |
2af231b8 JG |
1702 | /* Relocate for dynamic loading */ |
1703 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
b8ec9a79 | 1704 | goto define_a_symbol; |
bd5635a1 | 1705 | |
bd5635a1 RP |
1706 | case N_LBRAC: |
1707 | /* This "symbol" just indicates the start of an inner lexical | |
1708 | context within a function. */ | |
1709 | ||
574dac8e JK |
1710 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1711 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1712 | valu += function_start_offset; |
c55e6167 | 1713 | #else |
574dac8e JK |
1714 | if (block_address_function_relative) |
1715 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1716 | valu += function_start_offset; | |
1717 | else | |
1718 | /* On most machines, the block addresses are relative to the | |
1719 | N_SO, the linker did not relocate them (sigh). */ | |
1720 | valu += last_source_start_addr; | |
bd5635a1 RP |
1721 | #endif |
1722 | ||
a5e6391b | 1723 | #ifdef SUN_FIXED_LBRAC_BUG |
8357834f | 1724 | if (!SUN_FIXED_LBRAC_BUG && valu < last_pc_address) { |
bd5635a1 | 1725 | /* Patch current LBRAC pc value to match last handy pc value */ |
51b80b00 | 1726 | complain (&lbrac_complaint); |
bd5635a1 RP |
1727 | valu = last_pc_address; |
1728 | } | |
a5e6391b | 1729 | #endif |
7d9884b9 | 1730 | new = push_context (desc, valu); |
bd5635a1 RP |
1731 | break; |
1732 | ||
1733 | case N_RBRAC: | |
1734 | /* This "symbol" just indicates the end of an inner lexical | |
1735 | context that was started with N_LBRAC. */ | |
1736 | ||
574dac8e JK |
1737 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1738 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1739 | valu += function_start_offset; |
c55e6167 | 1740 | #else |
574dac8e JK |
1741 | if (block_address_function_relative) |
1742 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1743 | valu += function_start_offset; | |
1744 | else | |
1745 | /* On most machines, the block addresses are relative to the | |
1746 | N_SO, the linker did not relocate them (sigh). */ | |
1747 | valu += last_source_start_addr; | |
bd5635a1 RP |
1748 | #endif |
1749 | ||
7d9884b9 | 1750 | new = pop_context(); |
bd5635a1 | 1751 | if (desc != new->depth) |
51b80b00 | 1752 | complain (&lbrac_mismatch_complaint, symnum); |
bd5635a1 RP |
1753 | |
1754 | /* Some compilers put the variable decls inside of an | |
1755 | LBRAC/RBRAC block. This macro should be nonzero if this | |
1756 | is true. DESC is N_DESC from the N_RBRAC symbol. | |
0cf9329b PB |
1757 | GCC_P is true if we've detected the GCC_COMPILED_SYMBOL |
1758 | or the GCC2_COMPILED_SYMBOL. */ | |
bd5635a1 RP |
1759 | #if !defined (VARIABLES_INSIDE_BLOCK) |
1760 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 0 | |
1761 | #endif | |
1762 | ||
1763 | /* Can only use new->locals as local symbols here if we're in | |
1764 | gcc or on a machine that puts them before the lbrack. */ | |
1765 | if (!VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
1766 | local_symbols = new->locals; | |
1767 | ||
2f8c3639 JL |
1768 | if (context_stack_depth |
1769 | > !VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
bd5635a1 | 1770 | { |
2f8c3639 JL |
1771 | /* This is not the outermost LBRAC...RBRAC pair in the function, |
1772 | its local symbols preceded it, and are the ones just recovered | |
1773 | from the context stack. Define the block for them (but don't | |
1774 | bother if the block contains no symbols. Should we complain | |
1775 | on blocks without symbols? I can't think of any useful purpose | |
1776 | for them). */ | |
1777 | if (local_symbols != NULL) | |
bd5635a1 | 1778 | { |
2f8c3639 JL |
1779 | /* Muzzle a compiler bug that makes end < start. (which |
1780 | compilers? Is this ever harmful?). */ | |
1781 | if (new->start_addr > valu) | |
1782 | { | |
1783 | complain (&lbrac_rbrac_complaint); | |
1784 | new->start_addr = valu; | |
1785 | } | |
1786 | /* Make a block for the local symbols within. */ | |
1787 | finish_block (0, &local_symbols, new->old_blocks, | |
1788 | new->start_addr, valu, objfile); | |
bd5635a1 | 1789 | } |
bd5635a1 RP |
1790 | } |
1791 | else | |
1792 | { | |
2f8c3639 JL |
1793 | /* This is the outermost LBRAC...RBRAC pair. There is no |
1794 | need to do anything; leave the symbols that preceded it | |
1795 | to be attached to the function's own block. We need to | |
1796 | indicate that we just moved outside of the function. */ | |
bd5635a1 RP |
1797 | within_function = 0; |
1798 | } | |
2f8c3639 | 1799 | |
bd5635a1 RP |
1800 | if (VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) |
1801 | /* Now pop locals of block just finished. */ | |
1802 | local_symbols = new->locals; | |
1803 | break; | |
1804 | ||
9bb30452 | 1805 | case N_FN: |
6150cc73 | 1806 | case N_FN_SEQ: |
9bb30452 | 1807 | /* This kind of symbol indicates the start of an object file. */ |
2af231b8 JG |
1808 | /* Relocate for dynamic loading */ |
1809 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
bd5635a1 RP |
1810 | break; |
1811 | ||
1812 | case N_SO: | |
1813 | /* This type of symbol indicates the start of data | |
1814 | for one source file. | |
1815 | Finish the symbol table of the previous source file | |
1816 | (if any) and start accumulating a new symbol table. */ | |
2af231b8 JG |
1817 | /* Relocate for dynamic loading */ |
1818 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c55e6167 | 1819 | |
8357834f JK |
1820 | n_opt_found = 0; |
1821 | ||
a5e6391b | 1822 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 1823 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 1824 | #endif |
8357834f | 1825 | |
bd5635a1 RP |
1826 | #ifdef PCC_SOL_BROKEN |
1827 | /* pcc bug, occasionally puts out SO for SOL. */ | |
1828 | if (context_stack_depth > 0) | |
1829 | { | |
1830 | start_subfile (name, NULL); | |
1831 | break; | |
1832 | } | |
1833 | #endif | |
1834 | if (last_source_file) | |
7e258d18 PB |
1835 | { |
1836 | /* Check if previous symbol was also an N_SO (with some | |
1837 | sanity checks). If so, that one was actually the directory | |
1838 | name, and the current one is the real file name. | |
1839 | Patch things up. */ | |
6985bc54 | 1840 | if (previous_stab_code == (unsigned char) N_SO) |
7e258d18 | 1841 | { |
3416d90b | 1842 | patch_subfile_names (current_subfile, name); |
c72af089 | 1843 | break; /* Ignore repeated SOs */ |
7e258d18 | 1844 | } |
65ce5df4 | 1845 | end_symtab (valu, 0, 0, objfile, SECT_OFF_TEXT); |
3416d90b | 1846 | end_stabs (); |
7e258d18 | 1847 | } |
3416d90b | 1848 | start_stabs (); |
bd5635a1 RP |
1849 | start_symtab (name, NULL, valu); |
1850 | break; | |
1851 | ||
c55e6167 | 1852 | |
bd5635a1 RP |
1853 | case N_SOL: |
1854 | /* This type of symbol indicates the start of data for | |
1855 | a sub-source-file, one whose contents were copied or | |
1856 | included in the compilation of the main source file | |
1857 | (whose name was given in the N_SO symbol.) */ | |
2af231b8 JG |
1858 | /* Relocate for dynamic loading */ |
1859 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
784fd92b | 1860 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
1861 | break; |
1862 | ||
1863 | case N_BINCL: | |
1864 | push_subfile (); | |
1865 | add_new_header_file (name, valu); | |
784fd92b | 1866 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
1867 | break; |
1868 | ||
1869 | case N_EINCL: | |
784fd92b | 1870 | start_subfile (pop_subfile (), current_subfile->dirname); |
bd5635a1 RP |
1871 | break; |
1872 | ||
1873 | case N_EXCL: | |
1874 | add_old_header_file (name, valu); | |
1875 | break; | |
1876 | ||
1877 | case N_SLINE: | |
1878 | /* This type of "symbol" really just records | |
1879 | one line-number -- core-address correspondence. | |
1880 | Enter it in the line list for this symbol table. */ | |
9342ecb9 JG |
1881 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
1882 | valu += function_start_offset; | |
a5e6391b | 1883 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 1884 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 1885 | #endif |
4137c5fc | 1886 | record_line (current_subfile, desc, valu); |
bd5635a1 RP |
1887 | break; |
1888 | ||
1889 | case N_BCOMM: | |
4d57c599 | 1890 | common_block_start (name, objfile); |
bd5635a1 RP |
1891 | break; |
1892 | ||
1893 | case N_ECOMM: | |
4d57c599 JK |
1894 | common_block_end (objfile); |
1895 | break; | |
bd5635a1 | 1896 | |
2af231b8 JG |
1897 | /* The following symbol types need to have the appropriate offset added |
1898 | to their value; then we process symbol definitions in the name. */ | |
1899 | ||
1900 | case N_STSYM: /* Static symbol in data seg */ | |
1901 | case N_LCSYM: /* Static symbol in BSS seg */ | |
1902 | case N_ROSYM: /* Static symbol in Read-only data seg */ | |
4d57c599 JK |
1903 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
1904 | Solaris2's stabs-in-elf makes *most* symbols relative | |
1905 | but leaves a few absolute (at least for Solaris 2.1 and version | |
1906 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on the fence. | |
2af231b8 JG |
1907 | .stab "foo:S...",N_STSYM is absolute (ld relocates it) |
1908 | .stab "foo:V...",N_STSYM is relative (section base subtracted). | |
1909 | This leaves us no choice but to search for the 'S' or 'V'... | |
1910 | (or pass the whole section_offsets stuff down ONE MORE function | |
4d57c599 | 1911 | call level, which we really don't want to do). */ |
2af231b8 JG |
1912 | { |
1913 | char *p; | |
1914 | p = strchr (name, ':'); | |
1915 | if (p != 0 && p[1] == 'S') | |
1916 | { | |
c7d4c4c8 JK |
1917 | /* The linker relocated it. We don't want to add an |
1918 | elfstab_offset_sections-type offset, but we *do* want | |
1919 | to add whatever solib.c passed to symbol_file_add as | |
1920 | addr (this is known to affect SunOS4, and I suspect ELF | |
1921 | too). Since elfstab_offset_sections currently does not | |
1922 | muck with the text offset (there is no Ttext.text | |
1923 | symbol), we can get addr from the text offset. If | |
1924 | elfstab_offset_sections ever starts dealing with the | |
1925 | text offset, and we still need to do this, we need to | |
1926 | invent a SECT_OFF_ADDR_KLUDGE or something. */ | |
1927 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2af231b8 JG |
1928 | goto define_a_symbol; |
1929 | } | |
1930 | /* Since it's not the kludge case, re-dispatch to the right handler. */ | |
1931 | switch (type) { | |
1932 | case N_STSYM: goto case_N_STSYM; | |
1933 | case N_LCSYM: goto case_N_LCSYM; | |
1934 | case N_ROSYM: goto case_N_ROSYM; | |
1935 | default: abort(); | |
1936 | } | |
1937 | } | |
1938 | ||
1939 | case_N_STSYM: /* Static symbol in data seg */ | |
c55e6167 | 1940 | case N_DSLINE: /* Source line number, data seg */ |
2af231b8 JG |
1941 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA); |
1942 | goto define_a_symbol; | |
1943 | ||
1944 | case_N_LCSYM: /* Static symbol in BSS seg */ | |
c55e6167 JG |
1945 | case N_BSLINE: /* Source line number, bss seg */ |
1946 | /* N_BROWS: overlaps with N_BSLINE */ | |
2af231b8 JG |
1947 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS); |
1948 | goto define_a_symbol; | |
1949 | ||
1950 | case_N_ROSYM: /* Static symbol in Read-only data seg */ | |
1951 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA); | |
1952 | goto define_a_symbol; | |
1953 | ||
c55e6167 | 1954 | case N_ENTRY: /* Alternate entry point */ |
2af231b8 JG |
1955 | /* Relocate for dynamic loading */ |
1956 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1957 | goto define_a_symbol; | |
c55e6167 | 1958 | |
4f470205 JK |
1959 | /* The following symbol types we don't know how to process. Handle |
1960 | them in a "default" way, but complain to people who care. */ | |
1961 | default: | |
1962 | case N_CATCH: /* Exception handler catcher */ | |
1963 | case N_EHDECL: /* Exception handler name */ | |
1964 | case N_PC: /* Global symbol in Pascal */ | |
1965 | case N_M2C: /* Modula-2 compilation unit */ | |
1966 | /* N_MOD2: overlaps with N_EHDECL */ | |
1967 | case N_SCOPE: /* Modula-2 scope information */ | |
1968 | case N_ECOML: /* End common (local name) */ | |
1969 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
1970 | case N_NBDATA: | |
1971 | case N_NBBSS: | |
1972 | case N_NBSTS: | |
1973 | case N_NBLCS: | |
9d2b8d50 | 1974 | complain (&unknown_symtype_complaint, local_hex_string (type)); |
4f470205 JK |
1975 | /* FALLTHROUGH */ |
1976 | ||
c55e6167 JG |
1977 | /* The following symbol types don't need the address field relocated, |
1978 | since it is either unused, or is absolute. */ | |
2af231b8 | 1979 | define_a_symbol: |
c55e6167 JG |
1980 | case N_GSYM: /* Global variable */ |
1981 | case N_NSYMS: /* Number of symbols (ultrix) */ | |
1982 | case N_NOMAP: /* No map? (ultrix) */ | |
1983 | case N_RSYM: /* Register variable */ | |
1984 | case N_DEFD: /* Modula-2 GNU module dependency */ | |
1985 | case N_SSYM: /* Struct or union element */ | |
1986 | case N_LSYM: /* Local symbol in stack */ | |
1987 | case N_PSYM: /* Parameter variable */ | |
1988 | case N_LENG: /* Length of preceding symbol type */ | |
1989 | if (name) | |
4f470205 | 1990 | { |
b8ec9a79 JK |
1991 | int deftype; |
1992 | char *colon_pos = strchr (name, ':'); | |
1993 | if (colon_pos == NULL) | |
1994 | deftype = '\0'; | |
1995 | else | |
1996 | deftype = colon_pos[1]; | |
1997 | ||
1998 | switch (deftype) | |
4f470205 | 1999 | { |
b8ec9a79 JK |
2000 | case 'f': |
2001 | case 'F': | |
2002 | function_stab_type = type; | |
2003 | ||
3ef0fc8c | 2004 | #ifdef SUN_FIXED_LBRAC_BUG |
b8ec9a79 JK |
2005 | /* The Sun acc compiler, under SunOS4, puts out |
2006 | functions with N_GSYM or N_STSYM. The problem is | |
2007 | that the address of the symbol is no good (for N_GSYM | |
2008 | it doesn't even attept an address; for N_STSYM it | |
2009 | puts out an address but then it gets relocated | |
2010 | relative to the data segment, not the text segment). | |
2011 | Currently we can't fix this up later as we do for | |
2012 | some types of symbol in scan_file_globals. | |
2013 | Fortunately we do have a way of finding the address - | |
2014 | we know that the value in last_pc_address is either | |
2015 | the one we want (if we're dealing with the first | |
2016 | function in an object file), or somewhere in the | |
2017 | previous function. This means that we can use the | |
2018 | minimal symbol table to get the address. */ | |
2019 | ||
8adcfb97 JK |
2020 | /* On solaris up to 2.2, the N_FUN stab gets relocated. |
2021 | On Solaris 2.3, ld no longer relocates stabs (which | |
2022 | is good), and the N_FUN's value is now always zero. | |
5573d7d4 JK |
2023 | The following code can't deal with this, because |
2024 | last_pc_address depends on getting the address from a | |
2025 | N_SLINE or some such and in Solaris those are function | |
2026 | relative. Best fix is probably to create a Ttext.text symbol | |
2027 | and handle this like Ddata.data and so on. */ | |
8adcfb97 | 2028 | |
5573d7d4 | 2029 | if (type == N_GSYM || type == N_STSYM) |
b8ec9a79 JK |
2030 | { |
2031 | struct minimal_symbol *m; | |
2032 | int l = colon_pos - name; | |
2033 | ||
2034 | m = lookup_minimal_symbol_by_pc (last_pc_address); | |
2035 | if (m && STREQN (SYMBOL_NAME (m), name, l)) | |
2036 | /* last_pc_address was in this function */ | |
2037 | valu = SYMBOL_VALUE (m); | |
3c7d3064 JK |
2038 | else if (m && STREQN (SYMBOL_NAME (m+1), name, l)) |
2039 | /* last_pc_address was in last function */ | |
2040 | valu = SYMBOL_VALUE (m+1); | |
b8ec9a79 | 2041 | else |
3c7d3064 JK |
2042 | /* Not found - use last_pc_address (for finish_block) */ |
2043 | valu = last_pc_address; | |
b8ec9a79 JK |
2044 | } |
2045 | ||
b8ec9a79 JK |
2046 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
2047 | #endif | |
2048 | ||
2049 | if (block_address_function_relative) | |
2050 | /* For Solaris 2.0 compilers, the block addresses and | |
2051 | N_SLINE's are relative to the start of the | |
2052 | function. On normal systems, and when using gcc on | |
2053 | Solaris 2.0, these addresses are just absolute, or | |
2054 | relative to the N_SO, depending on | |
2055 | BLOCK_ADDRESS_ABSOLUTE. */ | |
2056 | function_start_offset = valu; | |
2057 | ||
2058 | within_function = 1; | |
2059 | if (context_stack_depth > 0) | |
2060 | { | |
2061 | new = pop_context (); | |
2062 | /* Make a block for the local symbols within. */ | |
2063 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2064 | new->start_addr, valu, objfile); | |
2065 | } | |
2066 | /* Stack must be empty now. */ | |
2067 | if (context_stack_depth != 0) | |
2068 | complain (&lbrac_unmatched_complaint, symnum); | |
2069 | ||
2070 | new = push_context (0, valu); | |
2071 | new->name = define_symbol (valu, name, desc, type, objfile); | |
2072 | break; | |
2073 | ||
2074 | default: | |
2075 | define_symbol (valu, name, desc, type, objfile); | |
2076 | break; | |
4f470205 JK |
2077 | } |
2078 | } | |
bd5635a1 RP |
2079 | break; |
2080 | ||
ec8ceca3 JG |
2081 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
2082 | for a bunch of other flags, too. Someday we may parse their | |
2083 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
2084 | case N_OPT: /* Solaris 2: Compiler options */ | |
2085 | if (name) | |
2086 | { | |
2e4964ad | 2087 | if (STREQ (name, GCC2_COMPILED_FLAG_SYMBOL)) |
3416d90b | 2088 | { |
1aed6766 | 2089 | processing_gcc_compilation = 2; |
3416d90b | 2090 | #if 1 /* Works, but is experimental. -fnf */ |
1aed6766 | 2091 | if (AUTO_DEMANGLING) |
3416d90b FF |
2092 | { |
2093 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
2094 | } | |
2095 | #endif | |
2096 | } | |
8357834f JK |
2097 | else |
2098 | n_opt_found = 1; | |
ec8ceca3 JG |
2099 | } |
2100 | break; | |
2101 | ||
bcbf9559 JG |
2102 | /* The following symbol types can be ignored. */ |
2103 | case N_OBJ: /* Solaris 2: Object file dir and name */ | |
bcbf9559 JG |
2104 | /* N_UNDF: Solaris 2: file separator mark */ |
2105 | /* N_UNDF: -- we will never encounter it, since we only process one | |
2106 | file's symbols at once. */ | |
4c7c6bab JG |
2107 | case N_ENDM: /* Solaris 2: End of module */ |
2108 | case N_MAIN: /* Name of main routine. */ | |
9342ecb9 | 2109 | break; |
bd5635a1 | 2110 | } |
7e258d18 PB |
2111 | |
2112 | previous_stab_code = type; | |
bd5635a1 RP |
2113 | } |
2114 | \f | |
965a5c32 SS |
2115 | /* FIXME: The only difference between this and elfstab_build_psymtabs is |
2116 | the call to install_minimal_symbols for elf. If the differences are | |
2117 | really that small, the code should be shared. */ | |
2118 | ||
b5b186a2 SS |
2119 | /* Scan and build partial symbols for an coff symbol file. |
2120 | The coff file has already been processed to get its minimal symbols. | |
2121 | ||
2122 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2123 | rolled into one. | |
2124 | ||
2125 | OBJFILE is the object file we are reading symbols from. | |
2126 | ADDR is the address relative to which the symbols are (e.g. | |
2127 | the base address of the text segment). | |
2128 | MAINLINE is true if we are reading the main symbol | |
2129 | table (as opposed to a shared lib or dynamically loaded file). | |
2130 | STABOFFSET and STABSIZE define the location in OBJFILE where the .stab | |
2131 | section exists. | |
2132 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
2133 | .stabstr section exists. | |
2134 | ||
2135 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
2136 | adjusted for coff details. */ | |
2137 | ||
2138 | void | |
2139 | coffstab_build_psymtabs (objfile, section_offsets, mainline, | |
2140 | staboffset, stabsize, | |
2141 | stabstroffset, stabstrsize) | |
2142 | struct objfile *objfile; | |
2143 | struct section_offsets *section_offsets; | |
2144 | int mainline; | |
2145 | file_ptr staboffset; | |
2146 | unsigned int stabsize; | |
2147 | file_ptr stabstroffset; | |
2148 | unsigned int stabstrsize; | |
2149 | { | |
2150 | int val; | |
2151 | bfd *sym_bfd = objfile->obfd; | |
2152 | char *name = bfd_get_filename (sym_bfd); | |
2153 | struct dbx_symfile_info *info; | |
2154 | ||
2155 | /* There is already a dbx_symfile_info allocated by our caller. | |
2156 | It might even contain some info from the coff symtab to help us. */ | |
965a5c32 | 2157 | info = (struct dbx_symfile_info *) objfile->sym_stab_info; |
b5b186a2 SS |
2158 | |
2159 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
2160 | if (!DBX_TEXT_SECT (objfile)) | |
2161 | error ("Can't find .text section in symbol file"); | |
2162 | ||
2163 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
2164 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; | |
2165 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
2166 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; | |
2167 | DBX_SYMTAB_OFFSET (objfile) = staboffset; | |
2168 | ||
2169 | if (stabstrsize > bfd_get_size (sym_bfd)) | |
2170 | error ("ridiculous string table size: %d bytes", stabstrsize); | |
2171 | DBX_STRINGTAB (objfile) = (char *) | |
2172 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
2173 | ||
2174 | /* Now read in the string table in one big gulp. */ | |
2175 | ||
2176 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
2177 | if (val < 0) | |
2178 | perror_with_name (name); | |
2179 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
2180 | if (val != stabstrsize) | |
2181 | perror_with_name (name); | |
2182 | ||
2183 | stabsread_new_init (); | |
2184 | buildsym_new_init (); | |
2185 | free_header_files (); | |
2186 | init_header_files (); | |
2187 | ||
2188 | processing_acc_compilation = 1; | |
2189 | ||
2190 | /* In a coff file, we've already installed the minimal symbols that came | |
2191 | from the coff (non-stab) symbol table, so always act like an | |
2192 | incremental load here. */ | |
2193 | dbx_symfile_read (objfile, section_offsets, 0); | |
2194 | } | |
2195 | \f | |
9342ecb9 JG |
2196 | /* Scan and build partial symbols for an ELF symbol file. |
2197 | This ELF file has already been processed to get its minimal symbols, | |
2198 | and any DWARF symbols that were in it. | |
2199 | ||
2200 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2201 | rolled into one. | |
2202 | ||
2203 | OBJFILE is the object file we are reading symbols from. | |
2204 | ADDR is the address relative to which the symbols are (e.g. | |
2205 | the base address of the text segment). | |
2206 | MAINLINE is true if we are reading the main symbol | |
2207 | table (as opposed to a shared lib or dynamically loaded file). | |
2208 | STABOFFSET and STABSIZE define the location in OBJFILE where the .stab | |
2209 | section exists. | |
2210 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
2211 | .stabstr section exists. | |
2212 | ||
2213 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
2214 | adjusted for elf details. */ | |
2215 | ||
2216 | void | |
1aed6766 | 2217 | elfstab_build_psymtabs (objfile, section_offsets, mainline, |
9342ecb9 | 2218 | staboffset, stabsize, |
1aed6766 SG |
2219 | stabstroffset, stabstrsize) |
2220 | struct objfile *objfile; | |
2221 | struct section_offsets *section_offsets; | |
2222 | int mainline; | |
51b80b00 | 2223 | file_ptr staboffset; |
1aed6766 | 2224 | unsigned int stabsize; |
51b80b00 | 2225 | file_ptr stabstroffset; |
1aed6766 | 2226 | unsigned int stabstrsize; |
9342ecb9 JG |
2227 | { |
2228 | int val; | |
2229 | bfd *sym_bfd = objfile->obfd; | |
2230 | char *name = bfd_get_filename (sym_bfd); | |
2231 | struct dbx_symfile_info *info; | |
2232 | ||
2af231b8 JG |
2233 | /* There is already a dbx_symfile_info allocated by our caller. |
2234 | It might even contain some info from the ELF symtab to help us. */ | |
965a5c32 | 2235 | info = (struct dbx_symfile_info *) objfile->sym_stab_info; |
9342ecb9 JG |
2236 | |
2237 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
2238 | if (!DBX_TEXT_SECT (objfile)) | |
2239 | error ("Can't find .text section in symbol file"); | |
2240 | ||
2241 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
2242 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; | |
2243 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
2244 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; | |
2245 | DBX_SYMTAB_OFFSET (objfile) = staboffset; | |
2246 | ||
996ccb30 | 2247 | if (stabstrsize > bfd_get_size (sym_bfd)) |
9342ecb9 JG |
2248 | error ("ridiculous string table size: %d bytes", stabstrsize); |
2249 | DBX_STRINGTAB (objfile) = (char *) | |
2250 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
2251 | ||
2252 | /* Now read in the string table in one big gulp. */ | |
2253 | ||
2c7ab4ca | 2254 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); |
9342ecb9 JG |
2255 | if (val < 0) |
2256 | perror_with_name (name); | |
2257 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
2258 | if (val != stabstrsize) | |
2259 | perror_with_name (name); | |
2260 | ||
3416d90b | 2261 | stabsread_new_init (); |
9342ecb9 JG |
2262 | buildsym_new_init (); |
2263 | free_header_files (); | |
2264 | init_header_files (); | |
2265 | install_minimal_symbols (objfile); | |
2266 | ||
2267 | processing_acc_compilation = 1; | |
2268 | ||
2269 | /* In an elf file, we've already installed the minimal symbols that came | |
2270 | from the elf (non-stab) symbol table, so always act like an | |
2271 | incremental load here. */ | |
2af231b8 JG |
2272 | dbx_symfile_read (objfile, section_offsets, 0); |
2273 | } | |
2274 | \f | |
040b9597 RP |
2275 | /* Scan and build partial symbols for a PA symbol file. |
2276 | This PA file has already been processed to get its minimal symbols. | |
2277 | ||
2278 | OBJFILE is the object file we are reading symbols from. | |
2279 | ADDR is the address relative to which the symbols are (e.g. | |
2280 | the base address of the text segment). | |
2281 | MAINLINE is true if we are reading the main symbol | |
2282 | table (as opposed to a shared lib or dynamically loaded file). | |
2283 | ||
2284 | */ | |
2285 | ||
2286 | void | |
2287 | pastab_build_psymtabs (objfile, section_offsets, mainline) | |
2288 | struct objfile *objfile; | |
2289 | struct section_offsets *section_offsets; | |
2290 | int mainline; | |
2291 | { | |
2292 | free_header_files (); | |
2293 | init_header_files (); | |
2294 | ||
2f8c3639 JL |
2295 | /* This is needed to debug objects assembled with gas2. */ |
2296 | processing_acc_compilation = 1; | |
2297 | ||
040b9597 RP |
2298 | /* In a PA file, we've already installed the minimal symbols that came |
2299 | from the PA (non-stab) symbol table, so always act like an | |
2300 | incremental load here. */ | |
2301 | ||
2302 | dbx_symfile_read (objfile, section_offsets, mainline); | |
2303 | } | |
2304 | \f | |
2af231b8 JG |
2305 | /* Parse the user's idea of an offset for dynamic linking, into our idea |
2306 | of how to represent it for fast symbol reading. */ | |
2307 | ||
040b9597 | 2308 | static struct section_offsets * |
2af231b8 JG |
2309 | dbx_symfile_offsets (objfile, addr) |
2310 | struct objfile *objfile; | |
2311 | CORE_ADDR addr; | |
2312 | { | |
2313 | struct section_offsets *section_offsets; | |
2314 | int i; | |
4d57c599 JK |
2315 | |
2316 | objfile->num_sections = SECT_OFF_MAX; | |
2af231b8 JG |
2317 | section_offsets = (struct section_offsets *) |
2318 | obstack_alloc (&objfile -> psymbol_obstack, | |
4d57c599 JK |
2319 | sizeof (struct section_offsets) |
2320 | + sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1)); | |
2af231b8 JG |
2321 | |
2322 | for (i = 0; i < SECT_OFF_MAX; i++) | |
2323 | ANOFFSET (section_offsets, i) = addr; | |
2324 | ||
2325 | return section_offsets; | |
9342ecb9 JG |
2326 | } |
2327 | \f | |
80d68b1d FF |
2328 | static struct sym_fns aout_sym_fns = |
2329 | { | |
0eed42de | 2330 | bfd_target_aout_flavour, |
80d68b1d FF |
2331 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2332 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2333 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2334 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2af231b8 | 2335 | dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
80d68b1d FF |
2336 | NULL /* next: pointer to next struct sym_fns */ |
2337 | }; | |
bd5635a1 RP |
2338 | |
2339 | void | |
2340 | _initialize_dbxread () | |
2341 | { | |
bd5635a1 | 2342 | add_symtab_fns(&aout_sym_fns); |
bd5635a1 | 2343 | } |