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Commit | Line | Data |
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bd5635a1 | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
94f5a25f | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996 |
65ce5df4 | 3 | Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
c3a21801 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
c3a21801 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
c3a21801 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
c3a21801 | 18 | along with this program; if not, write to the Free Software |
45886199 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
9404978d MT |
20 | |
21 | /* This module provides three functions: dbx_symfile_init, | |
22 | which initializes to read a symbol file; dbx_new_init, which | |
23 | discards existing cached information when all symbols are being | |
24 | discarded; and dbx_symfile_read, which reads a symbol table | |
25 | from a file. | |
26 | ||
27 | dbx_symfile_read only does the minimum work necessary for letting the | |
28 | user "name" things symbolically; it does not read the entire symtab. | |
29 | Instead, it reads the external and static symbols and puts them in partial | |
30 | symbol tables. When more extensive information is requested of a | |
31 | file, the corresponding partial symbol table is mutated into a full | |
32 | fledged symbol table by going back and reading the symbols | |
33 | for real. dbx_psymtab_to_symtab() is the function that does this */ | |
bd5635a1 | 34 | |
bd5635a1 | 35 | #include "defs.h" |
2b576293 | 36 | #include "gdb_string.h" |
bd5635a1 | 37 | |
9342ecb9 | 38 | #if defined(USG) || defined(__CYGNUSCLIB__) |
bd5635a1 RP |
39 | #include <sys/types.h> |
40 | #include <fcntl.h> | |
bd5635a1 RP |
41 | #endif |
42 | ||
f309ad95 | 43 | #include "obstack.h" |
2b576293 | 44 | #include "gdb_stat.h" |
bd5635a1 | 45 | #include <ctype.h> |
afe4ca15 JG |
46 | #include "symtab.h" |
47 | #include "breakpoint.h" | |
48 | #include "command.h" | |
49 | #include "target.h" | |
50 | #include "gdbcore.h" /* for bfd stuff */ | |
51 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ | |
52 | #include "symfile.h" | |
3624c875 | 53 | #include "objfiles.h" |
c0302457 | 54 | #include "buildsym.h" |
3416d90b | 55 | #include "stabsread.h" |
2af231b8 | 56 | #include "gdb-stabs.h" |
3416d90b | 57 | #include "demangle.h" |
51b80b00 FF |
58 | #include "language.h" /* Needed inside partial-stab.h */ |
59 | #include "complaints.h" | |
afe4ca15 | 60 | |
7e258d18 PB |
61 | #include "aout/aout64.h" |
62 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */ | |
bd5635a1 | 63 | |
989d9cba | 64 | \f |
2b576293 C |
65 | /* We put a pointer to this structure in the read_symtab_private field |
66 | of the psymtab. */ | |
4a35d6e9 | 67 | |
989d9cba | 68 | struct symloc { |
4a35d6e9 | 69 | |
989d9cba JK |
70 | /* Offset within the file symbol table of first local symbol for this |
71 | file. */ | |
4a35d6e9 | 72 | |
4a35d6e9 | 73 | int ldsymoff; |
989d9cba JK |
74 | |
75 | /* Length (in bytes) of the section of the symbol table devoted to | |
76 | this file's symbols (actually, the section bracketed may contain | |
77 | more than just this file's symbols). If ldsymlen is 0, the only | |
78 | reason for this thing's existence is the dependency list. Nothing | |
79 | else will happen when it is read in. */ | |
80 | ||
4a35d6e9 | 81 | int ldsymlen; |
989d9cba JK |
82 | |
83 | /* The size of each symbol in the symbol file (in external form). */ | |
84 | ||
9342ecb9 | 85 | int symbol_size; |
989d9cba JK |
86 | |
87 | /* Further information needed to locate the symbols if they are in | |
88 | an ELF file. */ | |
89 | ||
9342ecb9 JG |
90 | int symbol_offset; |
91 | int string_offset; | |
92 | int file_string_offset; | |
4a35d6e9 FF |
93 | }; |
94 | ||
989d9cba JK |
95 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) |
96 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
97 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) | |
98 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
99 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
100 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
101 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
102 | ||
103 | \f | |
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; | |
a66e8382 SG |
141 | |
142 | /* .o and NLM files contain unrelocated addresses which are based at 0. When | |
143 | non-zero, this flag disables some of the special cases for Solaris elf+stab | |
144 | text addresses at location 0. */ | |
145 | ||
146 | static int symfile_relocatable = 0; | |
bfe2f12b JL |
147 | |
148 | /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are relative | |
149 | to the function start address. */ | |
150 | ||
151 | static int block_address_function_relative = 0; | |
9d2b8d50 | 152 | \f |
ab52cc44 JK |
153 | /* The lowest text address we have yet encountered. This is needed |
154 | because in an a.out file, there is no header field which tells us | |
155 | what address the program is actually going to be loaded at, so we | |
156 | need to make guesses based on the symbols (which *are* relocated to | |
157 | reflect the address it will be loaded at). */ | |
9d2b8d50 | 158 | static CORE_ADDR lowest_text_address; |
9342ecb9 | 159 | |
bd5635a1 RP |
160 | /* Complaints about the symbols we have encountered. */ |
161 | ||
bd5635a1 RP |
162 | struct complaint lbrac_complaint = |
163 | {"bad block start address patched", 0, 0}; | |
164 | ||
bd5635a1 RP |
165 | struct complaint string_table_offset_complaint = |
166 | {"bad string table offset in symbol %d", 0, 0}; | |
167 | ||
168 | struct complaint unknown_symtype_complaint = | |
0c4d2cc2 | 169 | {"unknown symbol type %s", 0, 0}; |
bd5635a1 | 170 | |
65ce5df4 | 171 | struct complaint unknown_symchar_complaint = |
b30c81b6 | 172 | {"unknown symbol descriptor `%c'", 0, 0}; |
65ce5df4 | 173 | |
bd5635a1 RP |
174 | struct complaint lbrac_rbrac_complaint = |
175 | {"block start larger than block end", 0, 0}; | |
7d9884b9 JG |
176 | |
177 | struct complaint lbrac_unmatched_complaint = | |
178 | {"unmatched N_LBRAC before symtab pos %d", 0, 0}; | |
179 | ||
180 | struct complaint lbrac_mismatch_complaint = | |
181 | {"N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", 0, 0}; | |
9342ecb9 JG |
182 | |
183 | struct complaint repeated_header_complaint = | |
26a859ec | 184 | {"\"repeated\" header file %s not previously seen, at symtab pos %d", 0, 0}; |
d719efc6 DP |
185 | |
186 | struct complaint unclaimed_bincl_complaint = | |
187 | {"N_BINCL %s not in entries for any file, at symtab pos %d", 0, 0}; | |
bd5635a1 | 188 | \f |
bd5635a1 RP |
189 | /* During initial symbol readin, we need to have a structure to keep |
190 | track of which psymtabs have which bincls in them. This structure | |
191 | is used during readin to setup the list of dependencies within each | |
192 | partial symbol table. */ | |
193 | ||
194 | struct header_file_location | |
195 | { | |
196 | char *name; /* Name of header file */ | |
197 | int instance; /* See above */ | |
198 | struct partial_symtab *pst; /* Partial symtab that has the | |
199 | BINCL/EINCL defs for this file */ | |
200 | }; | |
201 | ||
202 | /* The actual list and controling variables */ | |
203 | static struct header_file_location *bincl_list, *next_bincl; | |
204 | static int bincls_allocated; | |
205 | ||
021959e2 JG |
206 | /* Local function prototypes */ |
207 | ||
b607efe7 FF |
208 | static void |
209 | process_now PARAMS ((struct objfile *)); | |
210 | ||
021959e2 | 211 | static void |
80d68b1d FF |
212 | free_header_files PARAMS ((void)); |
213 | ||
214 | static void | |
215 | init_header_files PARAMS ((void)); | |
021959e2 | 216 | |
574dac8e JK |
217 | static void |
218 | read_ofile_symtab PARAMS ((struct partial_symtab *)); | |
021959e2 JG |
219 | |
220 | static void | |
221 | dbx_psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
222 | ||
223 | static void | |
4c07f28d | 224 | dbx_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *)); |
021959e2 | 225 | |
5801f348 JK |
226 | static void |
227 | read_dbx_dynamic_symtab PARAMS ((struct section_offsets *, | |
228 | struct objfile *objfile)); | |
229 | ||
021959e2 | 230 | static void |
2af231b8 JG |
231 | read_dbx_symtab PARAMS ((struct section_offsets *, struct objfile *, |
232 | CORE_ADDR, int)); | |
021959e2 JG |
233 | |
234 | static void | |
235 | free_bincl_list PARAMS ((struct objfile *)); | |
236 | ||
237 | static struct partial_symtab * | |
238 | find_corresponding_bincl_psymtab PARAMS ((char *, int)); | |
239 | ||
240 | static void | |
241 | add_bincl_to_list PARAMS ((struct partial_symtab *, char *, int)); | |
242 | ||
243 | static void | |
244 | init_bincl_list PARAMS ((int, struct objfile *)); | |
245 | ||
021959e2 | 246 | static char * |
94f5a25f | 247 | dbx_next_symbol_text PARAMS ((struct objfile *)); |
021959e2 JG |
248 | |
249 | static void | |
250 | fill_symbuf PARAMS ((bfd *)); | |
251 | ||
252 | static void | |
80d68b1d FF |
253 | dbx_symfile_init PARAMS ((struct objfile *)); |
254 | ||
255 | static void | |
256 | dbx_new_init PARAMS ((struct objfile *)); | |
021959e2 JG |
257 | |
258 | static void | |
2af231b8 | 259 | dbx_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); |
021959e2 JG |
260 | |
261 | static void | |
80d68b1d | 262 | dbx_symfile_finish PARAMS ((struct objfile *)); |
021959e2 JG |
263 | |
264 | static void | |
265 | record_minimal_symbol PARAMS ((char *, CORE_ADDR, int, struct objfile *)); | |
266 | ||
267 | static void | |
268 | add_new_header_file PARAMS ((char *, int)); | |
269 | ||
270 | static void | |
271 | add_old_header_file PARAMS ((char *, int)); | |
272 | ||
273 | static void | |
274 | add_this_object_header_file PARAMS ((int)); | |
275 | ||
80d68b1d | 276 | /* Free up old header file tables */ |
bd5635a1 | 277 | |
021959e2 | 278 | static void |
80d68b1d | 279 | free_header_files () |
bd5635a1 | 280 | { |
80d68b1d FF |
281 | if (this_object_header_files) |
282 | { | |
ac88ca20 | 283 | free ((PTR)this_object_header_files); |
80d68b1d FF |
284 | this_object_header_files = NULL; |
285 | } | |
80d68b1d FF |
286 | n_allocated_this_object_header_files = 0; |
287 | } | |
288 | ||
289 | /* Allocate new header file tables */ | |
290 | ||
291 | static void | |
292 | init_header_files () | |
293 | { | |
bd5635a1 RP |
294 | n_allocated_this_object_header_files = 10; |
295 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); | |
296 | } | |
297 | ||
bd5635a1 RP |
298 | /* Add header file number I for this object file |
299 | at the next successive FILENUM. */ | |
300 | ||
301 | static void | |
302 | add_this_object_header_file (i) | |
303 | int i; | |
304 | { | |
305 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
306 | { | |
307 | n_allocated_this_object_header_files *= 2; | |
308 | this_object_header_files | |
021959e2 | 309 | = (int *) xrealloc ((char *) this_object_header_files, |
bd5635a1 RP |
310 | n_allocated_this_object_header_files * sizeof (int)); |
311 | } | |
312 | ||
313 | this_object_header_files[n_this_object_header_files++] = i; | |
314 | } | |
315 | ||
316 | /* Add to this file an "old" header file, one already seen in | |
317 | a previous object file. NAME is the header file's name. | |
318 | INSTANCE is its instance code, to select among multiple | |
319 | symbol tables for the same header file. */ | |
320 | ||
321 | static void | |
322 | add_old_header_file (name, instance) | |
323 | char *name; | |
324 | int instance; | |
325 | { | |
7f8da359 | 326 | register struct header_file *p = HEADER_FILES (current_objfile); |
bd5635a1 RP |
327 | register int i; |
328 | ||
7f8da359 | 329 | for (i = 0; i < N_HEADER_FILES (current_objfile); i++) |
2e4964ad | 330 | if (STREQ (p[i].name, name) && instance == p[i].instance) |
bd5635a1 RP |
331 | { |
332 | add_this_object_header_file (i); | |
333 | return; | |
334 | } | |
26a859ec | 335 | complain (&repeated_header_complaint, name, symnum); |
bd5635a1 RP |
336 | } |
337 | ||
338 | /* Add to this file a "new" header file: definitions for its types follow. | |
339 | NAME is the header file's name. | |
340 | Most often this happens only once for each distinct header file, | |
341 | but not necessarily. If it happens more than once, INSTANCE has | |
342 | a different value each time, and references to the header file | |
343 | use INSTANCE values to select among them. | |
344 | ||
345 | dbx output contains "begin" and "end" markers for each new header file, | |
346 | but at this level we just need to know which files there have been; | |
347 | so we record the file when its "begin" is seen and ignore the "end". */ | |
348 | ||
349 | static void | |
350 | add_new_header_file (name, instance) | |
351 | char *name; | |
352 | int instance; | |
353 | { | |
354 | register int i; | |
7f8da359 | 355 | register struct header_file *hfile; |
bd5635a1 RP |
356 | |
357 | /* Make sure there is room for one more header file. */ | |
358 | ||
7f8da359 PB |
359 | i = N_ALLOCATED_HEADER_FILES (current_objfile); |
360 | ||
361 | if (N_HEADER_FILES (current_objfile) == i) | |
bd5635a1 | 362 | { |
7f8da359 PB |
363 | if (i == 0) |
364 | { | |
365 | N_ALLOCATED_HEADER_FILES (current_objfile) = 10; | |
366 | HEADER_FILES (current_objfile) = (struct header_file *) | |
367 | xmalloc (10 * sizeof (struct header_file)); | |
368 | } | |
369 | else | |
370 | { | |
371 | i *= 2; | |
372 | N_ALLOCATED_HEADER_FILES (current_objfile) = i; | |
373 | HEADER_FILES (current_objfile) = (struct header_file *) | |
374 | xrealloc ((char *) HEADER_FILES (current_objfile), | |
375 | (i * sizeof (struct header_file))); | |
376 | } | |
bd5635a1 RP |
377 | } |
378 | ||
379 | /* Create an entry for this header file. */ | |
380 | ||
7f8da359 PB |
381 | i = N_HEADER_FILES (current_objfile)++; |
382 | hfile = HEADER_FILES (current_objfile) + i; | |
383 | hfile->name = savestring (name, strlen(name)); | |
384 | hfile->instance = instance; | |
385 | hfile->length = 10; | |
386 | hfile->vector | |
bd5635a1 | 387 | = (struct type **) xmalloc (10 * sizeof (struct type *)); |
7f8da359 | 388 | memset (hfile->vector, 0, 10 * sizeof (struct type *)); |
bd5635a1 RP |
389 | |
390 | add_this_object_header_file (i); | |
391 | } | |
392 | ||
bd5635a1 RP |
393 | #if 0 |
394 | static struct type ** | |
395 | explicit_lookup_type (real_filenum, index) | |
396 | int real_filenum, index; | |
397 | { | |
7f8da359 | 398 | register struct header_file *f = &HEADER_FILES (current_objfile)[real_filenum]; |
bd5635a1 RP |
399 | |
400 | if (index >= f->length) | |
401 | { | |
402 | f->length *= 2; | |
403 | f->vector = (struct type **) | |
404 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
4ed97c9a RP |
405 | memset (&f->vector[f->length / 2], |
406 | '\0', f->length * sizeof (struct type *) / 2); | |
bd5635a1 RP |
407 | } |
408 | return &f->vector[index]; | |
409 | } | |
410 | #endif | |
411 | \f | |
9bba3334 | 412 | static void |
021959e2 | 413 | record_minimal_symbol (name, address, type, objfile) |
bd5635a1 RP |
414 | char *name; |
415 | CORE_ADDR address; | |
416 | int type; | |
021959e2 | 417 | struct objfile *objfile; |
bd5635a1 | 418 | { |
021959e2 | 419 | enum minimal_symbol_type ms_type; |
a66e8382 | 420 | int section; |
609fd033 | 421 | asection *bfd_section; |
0c4d2cc2 | 422 | |
b8ec9a79 JK |
423 | switch (type) |
424 | { | |
a66e8382 SG |
425 | case N_TEXT | N_EXT: |
426 | ms_type = mst_text; | |
427 | section = SECT_OFF_TEXT; | |
609fd033 | 428 | bfd_section = DBX_TEXT_SECTION (objfile); |
a66e8382 SG |
429 | break; |
430 | case N_DATA | N_EXT: | |
431 | ms_type = mst_data; | |
432 | section = SECT_OFF_DATA; | |
609fd033 | 433 | bfd_section = DBX_DATA_SECTION (objfile); |
a66e8382 SG |
434 | break; |
435 | case N_BSS | N_EXT: | |
436 | ms_type = mst_bss; | |
437 | section = SECT_OFF_BSS; | |
609fd033 | 438 | bfd_section = DBX_BSS_SECTION (objfile); |
a66e8382 SG |
439 | break; |
440 | case N_ABS | N_EXT: | |
441 | ms_type = mst_abs; | |
442 | section = -1; | |
609fd033 | 443 | bfd_section = NULL; |
a66e8382 | 444 | break; |
0c4d2cc2 | 445 | #ifdef N_SETV |
a66e8382 SG |
446 | case N_SETV | N_EXT: |
447 | ms_type = mst_data; | |
448 | section = SECT_OFF_DATA; | |
609fd033 | 449 | bfd_section = DBX_DATA_SECTION (objfile); |
a66e8382 | 450 | break; |
b8ec9a79 JK |
451 | case N_SETV: |
452 | /* I don't think this type actually exists; since a N_SETV is the result | |
453 | of going over many .o files, it doesn't make sense to have one | |
454 | file local. */ | |
455 | ms_type = mst_file_data; | |
a66e8382 | 456 | section = SECT_OFF_DATA; |
609fd033 | 457 | bfd_section = DBX_DATA_SECTION (objfile); |
b8ec9a79 | 458 | break; |
0c4d2cc2 | 459 | #endif |
05c81f45 | 460 | case N_TEXT: |
b8ec9a79 JK |
461 | case N_NBTEXT: |
462 | case N_FN: | |
463 | case N_FN_SEQ: | |
b8ec9a79 | 464 | ms_type = mst_file_text; |
a66e8382 | 465 | section = SECT_OFF_TEXT; |
609fd033 | 466 | bfd_section = DBX_TEXT_SECTION (objfile); |
b8ec9a79 | 467 | break; |
b8ec9a79 JK |
468 | case N_DATA: |
469 | ms_type = mst_file_data; | |
470 | ||
471 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
472 | Record it as global even if it's local, not global, so | |
05c81f45 SEF |
473 | lookup_minimal_symbol can find it. We don't check symbol_leading_char |
474 | because for SunOS4 it always is '_'. */ | |
b8ec9a79 JK |
475 | if (name[8] == 'C' && STREQ ("__DYNAMIC", name)) |
476 | ms_type = mst_data; | |
477 | ||
478 | /* Same with virtual function tables, both global and static. */ | |
479 | { | |
480 | char *tempstring = name; | |
481 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) | |
482 | ++tempstring; | |
483 | if (VTBL_PREFIX_P ((tempstring))) | |
484 | ms_type = mst_data; | |
485 | } | |
a66e8382 | 486 | section = SECT_OFF_DATA; |
609fd033 | 487 | bfd_section = DBX_DATA_SECTION (objfile); |
b8ec9a79 | 488 | break; |
b8ec9a79 JK |
489 | case N_BSS: |
490 | ms_type = mst_file_bss; | |
a66e8382 | 491 | section = SECT_OFF_BSS; |
609fd033 | 492 | bfd_section = DBX_BSS_SECTION (objfile); |
a66e8382 SG |
493 | break; |
494 | default: | |
495 | ms_type = mst_unknown; | |
496 | section = -1; | |
609fd033 | 497 | bfd_section = NULL; |
b8ec9a79 | 498 | break; |
0c4d2cc2 | 499 | } |
bd5635a1 | 500 | |
bfe2f12b | 501 | if ((ms_type == mst_file_text || ms_type == mst_text) |
9d2b8d50 JK |
502 | && address < lowest_text_address) |
503 | lowest_text_address = address; | |
504 | ||
a66e8382 | 505 | prim_record_minimal_symbol_and_info |
609fd033 | 506 | (name, address, ms_type, NULL, section, bfd_section, objfile); |
bd5635a1 RP |
507 | } |
508 | \f | |
509 | /* Scan and build partial symbols for a symbol file. | |
510 | We have been initialized by a call to dbx_symfile_init, which | |
3624c875 FF |
511 | put all the relevant info into a "struct dbx_symfile_info", |
512 | hung off the objfile structure. | |
bd5635a1 | 513 | |
2af231b8 JG |
514 | SECTION_OFFSETS contains offsets relative to which the symbols in the |
515 | various sections are (depending where the sections were actually loaded). | |
bd5635a1 RP |
516 | MAINLINE is true if we are reading the main symbol |
517 | table (as opposed to a shared lib or dynamically loaded file). */ | |
518 | ||
9bba3334 | 519 | static void |
2af231b8 | 520 | dbx_symfile_read (objfile, section_offsets, mainline) |
80d68b1d | 521 | struct objfile *objfile; |
2af231b8 | 522 | struct section_offsets *section_offsets; |
bd5635a1 RP |
523 | int mainline; /* FIXME comments above */ |
524 | { | |
80d68b1d | 525 | bfd *sym_bfd; |
bd5635a1 | 526 | int val; |
0eb22669 | 527 | struct cleanup *back_to; |
bd5635a1 | 528 | |
a66e8382 SG |
529 | val = strlen (objfile->name); |
530 | ||
7f8da359 PB |
531 | sym_bfd = objfile->obfd; |
532 | ||
a66e8382 SG |
533 | /* .o and .nlm files are relocatables with text, data and bss segs based at |
534 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for | |
7f8da359 | 535 | symbols with a value of 0. */ |
a66e8382 | 536 | |
7f8da359 | 537 | symfile_relocatable = bfd_get_file_flags (sym_bfd) & HAS_RELOC; |
a66e8382 | 538 | |
bfe2f12b JL |
539 | /* This is true for Solaris (and all other systems which put stabs |
540 | in sections, hopefully, since it would be silly to do things | |
541 | differently from Solaris), and false for SunOS4 and other a.out | |
542 | file formats. */ | |
543 | block_address_function_relative = | |
7f8da359 PB |
544 | ((0 == strncmp (bfd_get_target (sym_bfd), "elf", 3)) |
545 | || (0 == strncmp (bfd_get_target (sym_bfd), "som", 3)) | |
546 | || (0 == strncmp (bfd_get_target (sym_bfd), "coff", 4)) | |
547 | || (0 == strncmp (bfd_get_target (sym_bfd), "pe", 2)) | |
548 | || (0 == strncmp (bfd_get_target (sym_bfd), "nlm", 3))); | |
bfe2f12b | 549 | |
7f8da359 | 550 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); |
bd5635a1 | 551 | if (val < 0) |
80d68b1d | 552 | perror_with_name (objfile->name); |
bd5635a1 | 553 | |
66eeea27 | 554 | /* If we are reinitializing, or if we have never loaded syms yet, init */ |
a367db89 JK |
555 | if (mainline |
556 | || objfile->global_psymbols.size == 0 | |
557 | || objfile->static_psymbols.size == 0) | |
558 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); | |
66eeea27 | 559 | |
9342ecb9 JG |
560 | symbol_size = DBX_SYMBOL_SIZE (objfile); |
561 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
afe4ca15 | 562 | |
a7f56d5a | 563 | free_pending_blocks (); |
0eb22669 | 564 | back_to = make_cleanup (really_free_pendings, 0); |
bd5635a1 | 565 | |
021959e2 JG |
566 | init_minimal_symbol_collection (); |
567 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
568 | |
569 | /* Now that the symbol table data of the executable file are all in core, | |
570 | process them and define symbols accordingly. */ | |
571 | ||
2af231b8 | 572 | read_dbx_symtab (section_offsets, objfile, |
2b576293 C |
573 | DBX_TEXT_ADDR (objfile), |
574 | DBX_TEXT_SIZE (objfile)); | |
bd5635a1 | 575 | |
26a859ec | 576 | /* Add the dynamic symbols. */ |
5801f348 | 577 | |
26a859ec | 578 | read_dbx_dynamic_symtab (section_offsets, objfile); |
5801f348 | 579 | |
021959e2 JG |
580 | /* Install any minimal symbols that have been collected as the current |
581 | minimal symbols for this objfile. */ | |
bd5635a1 | 582 | |
80d68b1d | 583 | install_minimal_symbols (objfile); |
bd5635a1 | 584 | |
0eb22669 | 585 | do_cleanups (back_to); |
bd5635a1 RP |
586 | } |
587 | ||
9404978d MT |
588 | /* Initialize anything that needs initializing when a completely new |
589 | symbol file is specified (not just adding some symbols from another | |
590 | file, e.g. a shared library). */ | |
bd5635a1 | 591 | |
9bba3334 | 592 | static void |
ac88ca20 JG |
593 | dbx_new_init (ignore) |
594 | struct objfile *ignore; | |
bd5635a1 | 595 | { |
3416d90b | 596 | stabsread_new_init (); |
c0302457 | 597 | buildsym_new_init (); |
80d68b1d | 598 | init_header_files (); |
bd5635a1 RP |
599 | } |
600 | ||
601 | ||
602 | /* dbx_symfile_init () | |
603 | is the dbx-specific initialization routine for reading symbols. | |
80d68b1d | 604 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
605 | the BFD for the file whose symbols are being read, and a slot for a pointer |
606 | to "private data" which we fill with goodies. | |
607 | ||
608 | We read the string table into malloc'd space and stash a pointer to it. | |
609 | ||
610 | Since BFD doesn't know how to read debug symbols in a format-independent | |
611 | way (and may never do so...), we have to do it ourselves. We will never | |
612 | be called unless this is an a.out (or very similar) file. | |
613 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
614 | ||
69a272c4 FF |
615 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
616 | ||
9bba3334 | 617 | static void |
80d68b1d FF |
618 | dbx_symfile_init (objfile) |
619 | struct objfile *objfile; | |
bd5635a1 RP |
620 | { |
621 | int val; | |
80d68b1d | 622 | bfd *sym_bfd = objfile->obfd; |
bd5635a1 | 623 | char *name = bfd_get_filename (sym_bfd); |
2b576293 | 624 | asection *text_sect; |
69a272c4 | 625 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; |
bd5635a1 RP |
626 | |
627 | /* Allocate struct to keep track of the symfile */ | |
965a5c32 | 628 | objfile->sym_stab_info = (PTR) |
3624c875 | 629 | xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info)); |
609fd033 FF |
630 | memset ((PTR) objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); |
631 | ||
632 | DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
633 | DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data"); | |
634 | DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss"); | |
bd5635a1 RP |
635 | |
636 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
bd5635a1 RP |
637 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
638 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
040b9597 | 639 | |
bd5635a1 RP |
640 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
641 | ||
784fd92b | 642 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; |
2b576293 C |
643 | |
644 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); | |
645 | if (!text_sect) | |
9342ecb9 | 646 | error ("Can't find .text section in symbol file"); |
2b576293 C |
647 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
648 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
9342ecb9 | 649 | |
bf18ac80 | 650 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); |
7da1e27d | 651 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); |
9342ecb9 | 652 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; |
3624c875 FF |
653 | |
654 | /* Read the string table and stash it away in the psymbol_obstack. It is | |
655 | only needed as long as we need to expand psymbols into full symbols, | |
656 | so when we blow away the psymbol the string table goes away as well. | |
657 | Note that gdb used to use the results of attempting to malloc the | |
658 | string table, based on the size it read, as a form of sanity check | |
659 | for botched byte swapping, on the theory that a byte swapped string | |
660 | table size would be so totally bogus that the malloc would fail. Now | |
661 | that we put in on the psymbol_obstack, we can't do this since gdb gets | |
662 | a fatal error (out of virtual memory) if the size is bogus. We can | |
69a272c4 FF |
663 | however at least check to see if the size is less than the size of |
664 | the size field itself, or larger than the size of the entire file. | |
665 | Note that all valid string tables have a size greater than zero, since | |
666 | the bytes used to hold the size are included in the count. */ | |
3624c875 | 667 | |
69a272c4 FF |
668 | if (STRING_TABLE_OFFSET == 0) |
669 | { | |
65ce5df4 JG |
670 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET |
671 | will never be zero, even when there is no string table. This | |
672 | would appear to be a bug in bfd. */ | |
69a272c4 FF |
673 | DBX_STRINGTAB_SIZE (objfile) = 0; |
674 | DBX_STRINGTAB (objfile) = NULL; | |
675 | } | |
676 | else | |
677 | { | |
2c7ab4ca | 678 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
69a272c4 FF |
679 | if (val < 0) |
680 | perror_with_name (name); | |
681 | ||
682 | memset ((PTR) size_temp, 0, sizeof (size_temp)); | |
683 | val = bfd_read ((PTR) size_temp, sizeof (size_temp), 1, sym_bfd); | |
684 | if (val < 0) | |
65ce5df4 JG |
685 | { |
686 | perror_with_name (name); | |
687 | } | |
688 | else if (val == 0) | |
689 | { | |
690 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
691 | EOF if there is no string table, and attempting to read the size | |
692 | from EOF will read zero bytes. */ | |
693 | DBX_STRINGTAB_SIZE (objfile) = 0; | |
694 | DBX_STRINGTAB (objfile) = NULL; | |
695 | } | |
696 | else | |
697 | { | |
698 | /* Read some data that would appear to be the string table size. | |
699 | If there really is a string table, then it is probably the right | |
700 | size. Byteswap if necessary and validate the size. Note that | |
701 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
702 | random data that happened to be at STRING_TABLE_OFFSET, because | |
703 | bfd can't tell us there is no string table, the sanity checks may | |
704 | or may not catch this. */ | |
705 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); | |
706 | ||
707 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) | |
708 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
709 | error ("ridiculous string table size (%d bytes).", | |
710 | DBX_STRINGTAB_SIZE (objfile)); | |
711 | ||
712 | DBX_STRINGTAB (objfile) = | |
713 | (char *) obstack_alloc (&objfile -> psymbol_obstack, | |
714 | DBX_STRINGTAB_SIZE (objfile)); | |
94f5a25f | 715 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); |
65ce5df4 JG |
716 | |
717 | /* Now read in the string table in one big gulp. */ | |
718 | ||
2c7ab4ca | 719 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
65ce5df4 JG |
720 | if (val < 0) |
721 | perror_with_name (name); | |
722 | val = bfd_read (DBX_STRINGTAB (objfile), DBX_STRINGTAB_SIZE (objfile), 1, | |
723 | sym_bfd); | |
724 | if (val != DBX_STRINGTAB_SIZE (objfile)) | |
725 | perror_with_name (name); | |
726 | } | |
69a272c4 | 727 | } |
bd5635a1 | 728 | } |
80d68b1d FF |
729 | |
730 | /* Perform any local cleanups required when we are done with a particular | |
731 | objfile. I.E, we are in the process of discarding all symbol information | |
732 | for an objfile, freeing up all memory held for it, and unlinking the | |
733 | objfile struct from the global list of known objfiles. */ | |
734 | ||
735 | static void | |
736 | dbx_symfile_finish (objfile) | |
737 | struct objfile *objfile; | |
738 | { | |
965a5c32 | 739 | if (objfile->sym_stab_info != NULL) |
80d68b1d | 740 | { |
7f8da359 PB |
741 | if (HEADER_FILES (objfile) != NULL) |
742 | { | |
743 | register int i = N_HEADER_FILES (objfile); | |
744 | register struct header_file *hfiles = HEADER_FILES (objfile); | |
745 | ||
746 | while (--i >= 0) | |
747 | { | |
748 | free (hfiles [i].name); | |
609fd033 | 749 | free (hfiles [i].vector); |
7f8da359 PB |
750 | } |
751 | free ((PTR) hfiles); | |
752 | } | |
965a5c32 | 753 | mfree (objfile -> md, objfile->sym_stab_info); |
80d68b1d FF |
754 | } |
755 | free_header_files (); | |
756 | } | |
757 | ||
bd5635a1 RP |
758 | \f |
759 | /* Buffer for reading the symbol table entries. */ | |
139e2c0f | 760 | static struct external_nlist symbuf[4096]; |
bd5635a1 RP |
761 | static int symbuf_idx; |
762 | static int symbuf_end; | |
763 | ||
94f5a25f DP |
764 | /* cont_elem is used for continuing information in cfront. |
765 | It saves information about which types need to be fixed up and | |
766 | completed after all the stabs are read. */ | |
767 | struct cont_elem | |
768 | { | |
769 | /* sym and stabsstring for continuing information in cfront */ | |
770 | struct symbol * sym; | |
771 | char * stabs; | |
772 | /* state dependancies (statics that must be preserved) */ | |
773 | int sym_idx; | |
774 | int sym_end; | |
775 | int symnum; | |
b303e105 | 776 | int (*func) PARAMS ((struct objfile *, struct symbol *, char *)); |
94f5a25f DP |
777 | /* other state dependancies include: |
778 | (assumption is that these will not change since process_now FIXME!!) | |
779 | stringtab_global | |
780 | n_stabs | |
781 | objfile | |
782 | symfile_bfd */ | |
783 | }; | |
d719efc6 DP |
784 | |
785 | static struct cont_elem *cont_list = 0; | |
786 | static int cont_limit = 0; | |
94f5a25f DP |
787 | static int cont_count = 0; |
788 | ||
789 | void | |
d719efc6 | 790 | process_later (sym, p, f) |
94f5a25f DP |
791 | struct symbol * sym; |
792 | char * p; | |
b303e105 | 793 | int (*f) PARAMS ((struct objfile *, struct symbol *, char *)); |
94f5a25f | 794 | { |
d719efc6 DP |
795 | if (cont_count >= cont_limit - 1) |
796 | { | |
797 | cont_limit += 32; /* chunk size */ | |
798 | cont_list = (struct cont_elem *) realloc (cont_list, | |
799 | cont_limit * sizeof (struct cont_elem)); | |
800 | if (!cont_list) | |
801 | error ("Virtual memory exhausted\n"); | |
802 | } | |
94f5a25f DP |
803 | /* save state so we can process these stabs later */ |
804 | cont_list[cont_count].sym_idx = symbuf_idx; | |
805 | cont_list[cont_count].sym_end = symbuf_end; | |
806 | cont_list[cont_count].symnum = symnum; | |
807 | cont_list[cont_count].sym = sym; | |
808 | cont_list[cont_count].stabs = p; | |
d719efc6 | 809 | cont_list[cont_count].func = f; |
94f5a25f DP |
810 | cont_count++; |
811 | } | |
812 | ||
b607efe7 | 813 | static void |
d719efc6 | 814 | process_now (objfile) |
94f5a25f DP |
815 | struct objfile * objfile; |
816 | { | |
817 | int i; | |
818 | /* save original state */ | |
819 | int save_symbuf_idx = symbuf_idx; | |
820 | int save_symbuf_end = symbuf_end; | |
821 | int save_symnum = symnum; | |
d719efc6 DP |
822 | struct symbol *sym; |
823 | char *stabs; | |
824 | int err; | |
b303e105 | 825 | int (*func) PARAMS ((struct objfile *, struct symbol *, char *)); |
d719efc6 | 826 | |
94f5a25f DP |
827 | for (i=0; i<cont_count; i++) |
828 | { | |
d719efc6 | 829 | /* Set state as if we were parsing stabs strings |
94f5a25f DP |
830 | for this symbol */ |
831 | symbuf_idx = cont_list[i].sym_idx; /* statics used by gdb */ | |
832 | symbuf_end = cont_list[i].sym_end; | |
833 | symnum = cont_list[i].symnum; | |
d719efc6 DP |
834 | sym = cont_list[i].sym; |
835 | stabs = cont_list[i].stabs; | |
836 | func = cont_list[i].func; | |
837 | ||
838 | err = (*func) (objfile, sym, stabs); | |
839 | if (err) | |
840 | error ("Internal error: unable to resolve stab.\n"); | |
94f5a25f DP |
841 | } |
842 | /* restore original state */ | |
843 | symbuf_idx = save_symbuf_idx; | |
844 | symbuf_end = save_symbuf_end; | |
845 | symnum = save_symnum; | |
846 | cont_count=0; /* reset for next run */ | |
847 | } | |
848 | ||
849 | ||
9342ecb9 JG |
850 | /* Name of last function encountered. Used in Solaris to approximate |
851 | object file boundaries. */ | |
852 | static char *last_function_name; | |
853 | ||
bd5635a1 RP |
854 | /* The address in memory of the string table of the object file we are |
855 | reading (which might not be the "main" object file, but might be a | |
a367db89 JK |
856 | shared library or some other dynamically loaded thing). This is |
857 | set by read_dbx_symtab when building psymtabs, and by | |
858 | read_ofile_symtab when building symtabs, and is used only by | |
859 | next_symbol_text. FIXME: If that is true, we don't need it when | |
860 | building psymtabs, right? */ | |
bd5635a1 RP |
861 | static char *stringtab_global; |
862 | ||
2b576293 C |
863 | /* These variables are used to control fill_symbuf when the stabs |
864 | symbols are not contiguous (as may be the case when a COFF file is | |
865 | linked using --split-by-reloc). */ | |
866 | static struct stab_section_list *symbuf_sections; | |
867 | static unsigned int symbuf_left; | |
868 | static unsigned int symbuf_read; | |
869 | ||
bd5635a1 RP |
870 | /* Refill the symbol table input buffer |
871 | and set the variables that control fetching entries from it. | |
872 | Reports an error if no data available. | |
873 | This function can read past the end of the symbol table | |
874 | (into the string table) but this does no harm. */ | |
875 | ||
7d9884b9 JG |
876 | static void |
877 | fill_symbuf (sym_bfd) | |
878 | bfd *sym_bfd; | |
bd5635a1 | 879 | { |
2b576293 C |
880 | unsigned int count; |
881 | int nbytes; | |
882 | ||
883 | if (symbuf_sections == NULL) | |
884 | count = sizeof (symbuf); | |
885 | else | |
886 | { | |
887 | if (symbuf_left <= 0) | |
888 | { | |
889 | file_ptr filepos = symbuf_sections->section->filepos; | |
890 | if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0) | |
891 | perror_with_name (bfd_get_filename (sym_bfd)); | |
892 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section); | |
893 | symbol_table_offset = filepos - symbuf_read; | |
894 | symbuf_sections = symbuf_sections->next; | |
895 | } | |
896 | ||
897 | count = symbuf_left; | |
898 | if (count > sizeof (symbuf)) | |
899 | count = sizeof (symbuf); | |
900 | } | |
901 | ||
902 | nbytes = bfd_read ((PTR)symbuf, count, 1, sym_bfd); | |
bd5635a1 | 903 | if (nbytes < 0) |
7d9884b9 | 904 | perror_with_name (bfd_get_filename (sym_bfd)); |
bd5635a1 RP |
905 | else if (nbytes == 0) |
906 | error ("Premature end of file reading symbol table"); | |
afe4ca15 | 907 | symbuf_end = nbytes / symbol_size; |
bd5635a1 | 908 | symbuf_idx = 0; |
2b576293 C |
909 | symbuf_left -= nbytes; |
910 | symbuf_read += nbytes; | |
bd5635a1 RP |
911 | } |
912 | ||
7d9884b9 | 913 | #define SWAP_SYMBOL(symp, abfd) \ |
bd5635a1 | 914 | { \ |
7d9884b9 | 915 | (symp)->n_strx = bfd_h_get_32(abfd, \ |
afe4ca15 | 916 | (unsigned char *)&(symp)->n_strx); \ |
7d9884b9 | 917 | (symp)->n_desc = bfd_h_get_16 (abfd, \ |
bd5635a1 | 918 | (unsigned char *)&(symp)->n_desc); \ |
7d9884b9 | 919 | (symp)->n_value = bfd_h_get_32 (abfd, \ |
bd5635a1 RP |
920 | (unsigned char *)&(symp)->n_value); \ |
921 | } | |
922 | ||
139e2c0f SG |
923 | #define INTERNALIZE_SYMBOL(intern, extern, abfd) \ |
924 | { \ | |
925 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \ | |
926 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \ | |
927 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \ | |
928 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \ | |
929 | } | |
930 | ||
bd5635a1 RP |
931 | /* Invariant: The symbol pointed to by symbuf_idx is the first one |
932 | that hasn't been swapped. Swap the symbol at the same time | |
933 | that symbuf_idx is incremented. */ | |
934 | ||
935 | /* dbx allows the text of a symbol name to be continued into the | |
936 | next symbol name! When such a continuation is encountered | |
937 | (a \ at the end of the text of a name) | |
938 | call this function to get the continuation. */ | |
939 | ||
021959e2 | 940 | static char * |
94f5a25f DP |
941 | dbx_next_symbol_text (objfile) |
942 | struct objfile *objfile; | |
bd5635a1 | 943 | { |
139e2c0f SG |
944 | struct internal_nlist nlist; |
945 | ||
bd5635a1 | 946 | if (symbuf_idx == symbuf_end) |
7d9884b9 | 947 | fill_symbuf (symfile_bfd); |
139e2c0f | 948 | |
bd5635a1 | 949 | symnum++; |
139e2c0f | 950 | INTERNALIZE_SYMBOL(nlist, &symbuf[symbuf_idx], symfile_bfd); |
94f5a25f | 951 | OBJSTAT (objfile, n_stabs++); |
139e2c0f SG |
952 | |
953 | symbuf_idx++; | |
954 | ||
955 | return nlist.n_strx + stringtab_global + file_string_table_offset; | |
bd5635a1 RP |
956 | } |
957 | \f | |
bd5635a1 RP |
958 | /* Initialize the list of bincls to contain none and have some |
959 | allocated. */ | |
960 | ||
961 | static void | |
021959e2 | 962 | init_bincl_list (number, objfile) |
bd5635a1 | 963 | int number; |
021959e2 | 964 | struct objfile *objfile; |
bd5635a1 RP |
965 | { |
966 | bincls_allocated = number; | |
967 | next_bincl = bincl_list = (struct header_file_location *) | |
318bf84f | 968 | xmmalloc (objfile -> md, bincls_allocated * sizeof(struct header_file_location)); |
bd5635a1 RP |
969 | } |
970 | ||
971 | /* Add a bincl to the list. */ | |
972 | ||
973 | static void | |
974 | add_bincl_to_list (pst, name, instance) | |
975 | struct partial_symtab *pst; | |
976 | char *name; | |
977 | int instance; | |
978 | { | |
979 | if (next_bincl >= bincl_list + bincls_allocated) | |
980 | { | |
981 | int offset = next_bincl - bincl_list; | |
982 | bincls_allocated *= 2; | |
983 | bincl_list = (struct header_file_location *) | |
318bf84f | 984 | xmrealloc (pst->objfile->md, (char *)bincl_list, |
bd5635a1 RP |
985 | bincls_allocated * sizeof (struct header_file_location)); |
986 | next_bincl = bincl_list + offset; | |
987 | } | |
988 | next_bincl->pst = pst; | |
989 | next_bincl->instance = instance; | |
990 | next_bincl++->name = name; | |
991 | } | |
992 | ||
993 | /* Given a name, value pair, find the corresponding | |
994 | bincl in the list. Return the partial symtab associated | |
995 | with that header_file_location. */ | |
996 | ||
9bba3334 | 997 | static struct partial_symtab * |
bd5635a1 RP |
998 | find_corresponding_bincl_psymtab (name, instance) |
999 | char *name; | |
1000 | int instance; | |
1001 | { | |
1002 | struct header_file_location *bincl; | |
1003 | ||
1004 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
1005 | if (bincl->instance == instance | |
2e4964ad | 1006 | && STREQ (name, bincl->name)) |
bd5635a1 RP |
1007 | return bincl->pst; |
1008 | ||
26a859ec | 1009 | complain (&repeated_header_complaint, name, symnum); |
bd5635a1 RP |
1010 | return (struct partial_symtab *) 0; |
1011 | } | |
1012 | ||
1013 | /* Free the storage allocated for the bincl list. */ | |
1014 | ||
1015 | static void | |
021959e2 JG |
1016 | free_bincl_list (objfile) |
1017 | struct objfile *objfile; | |
bd5635a1 | 1018 | { |
ac88ca20 | 1019 | mfree (objfile -> md, (PTR)bincl_list); |
bd5635a1 RP |
1020 | bincls_allocated = 0; |
1021 | } | |
1022 | ||
5801f348 JK |
1023 | /* Scan a SunOs dynamic symbol table for symbols of interest and |
1024 | add them to the minimal symbol table. */ | |
1025 | ||
1026 | static void | |
1027 | read_dbx_dynamic_symtab (section_offsets, objfile) | |
1028 | struct section_offsets *section_offsets; | |
1029 | struct objfile *objfile; | |
1030 | { | |
1031 | bfd *abfd = objfile->obfd; | |
192b64e7 | 1032 | struct cleanup *back_to; |
5801f348 | 1033 | int counter; |
192b64e7 ILT |
1034 | long dynsym_size; |
1035 | long dynsym_count; | |
1036 | asymbol **dynsyms; | |
1037 | asymbol **symptr; | |
1038 | arelent **relptr; | |
1039 | long dynrel_size; | |
1040 | long dynrel_count; | |
1041 | arelent **dynrels; | |
5801f348 | 1042 | CORE_ADDR sym_value; |
f69ecb9c | 1043 | char *name; |
5801f348 JK |
1044 | |
1045 | /* Check that the symbol file has dynamic symbols that we know about. | |
1046 | bfd_arch_unknown can happen if we are reading a sun3 symbol file | |
1047 | on a sun4 host (and vice versa) and bfd is not configured | |
1048 | --with-target=all. This would trigger an assertion in bfd/sunos.c, | |
1049 | so we ignore the dynamic symbols in this case. */ | |
1050 | if (bfd_get_flavour (abfd) != bfd_target_aout_flavour | |
1051 | || (bfd_get_file_flags (abfd) & DYNAMIC) == 0 | |
192b64e7 | 1052 | || bfd_get_arch (abfd) == bfd_arch_unknown) |
5801f348 JK |
1053 | return; |
1054 | ||
192b64e7 ILT |
1055 | dynsym_size = bfd_get_dynamic_symtab_upper_bound (abfd); |
1056 | if (dynsym_size < 0) | |
5801f348 JK |
1057 | return; |
1058 | ||
192b64e7 ILT |
1059 | dynsyms = (asymbol **) xmalloc (dynsym_size); |
1060 | back_to = make_cleanup (free, dynsyms); | |
1061 | ||
1062 | dynsym_count = bfd_canonicalize_dynamic_symtab (abfd, dynsyms); | |
1063 | if (dynsym_count < 0) | |
1064 | { | |
1065 | do_cleanups (back_to); | |
1066 | return; | |
1067 | } | |
1068 | ||
5801f348 JK |
1069 | /* Enter dynamic symbols into the minimal symbol table |
1070 | if this is a stripped executable. */ | |
1071 | if (bfd_get_symcount (abfd) <= 0) | |
1072 | { | |
192b64e7 ILT |
1073 | symptr = dynsyms; |
1074 | for (counter = 0; counter < dynsym_count; counter++, symptr++) | |
5801f348 | 1075 | { |
192b64e7 ILT |
1076 | asymbol *sym = *symptr; |
1077 | asection *sec; | |
1078 | int type; | |
1079 | ||
192b64e7 | 1080 | sec = bfd_get_section (sym); |
be78eb1a PS |
1081 | |
1082 | /* BFD symbols are section relative. */ | |
0683ac4b PS |
1083 | sym_value = sym->value + sec->vma; |
1084 | ||
192b64e7 | 1085 | if (bfd_get_section_flags (abfd, sec) & SEC_CODE) |
5801f348 | 1086 | { |
192b64e7 ILT |
1087 | sym_value += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
1088 | type = N_TEXT; | |
5801f348 | 1089 | } |
192b64e7 ILT |
1090 | else if (bfd_get_section_flags (abfd, sec) & SEC_DATA) |
1091 | { | |
1092 | sym_value += ANOFFSET (section_offsets, SECT_OFF_DATA); | |
1093 | type = N_DATA; | |
1094 | } | |
1095 | else if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) | |
5801f348 | 1096 | { |
192b64e7 ILT |
1097 | sym_value += ANOFFSET (section_offsets, SECT_OFF_BSS); |
1098 | type = N_BSS; | |
5801f348 JK |
1099 | } |
1100 | else | |
192b64e7 ILT |
1101 | continue; |
1102 | ||
1103 | if (sym->flags & BSF_GLOBAL) | |
1104 | type |= N_EXT; | |
1105 | ||
b9e58503 PS |
1106 | record_minimal_symbol ((char *) bfd_asymbol_name (sym), sym_value, |
1107 | type, objfile); | |
5801f348 JK |
1108 | } |
1109 | } | |
1110 | ||
1111 | /* Symbols from shared libraries have a dynamic relocation entry | |
1112 | that points to the associated slot in the procedure linkage table. | |
1113 | We make a mininal symbol table entry with type mst_solib_trampoline | |
1114 | at the address in the procedure linkage table. */ | |
192b64e7 ILT |
1115 | dynrel_size = bfd_get_dynamic_reloc_upper_bound (abfd); |
1116 | if (dynrel_size < 0) | |
1117 | { | |
1118 | do_cleanups (back_to); | |
1119 | return; | |
1120 | } | |
1121 | ||
1122 | dynrels = (arelent **) xmalloc (dynrel_size); | |
1123 | make_cleanup (free, dynrels); | |
5801f348 | 1124 | |
192b64e7 ILT |
1125 | dynrel_count = bfd_canonicalize_dynamic_reloc (abfd, dynrels, dynsyms); |
1126 | if (dynrel_count < 0) | |
1127 | { | |
1128 | do_cleanups (back_to); | |
1129 | return; | |
1130 | } | |
5801f348 | 1131 | |
192b64e7 | 1132 | for (counter = 0, relptr = dynrels; |
5801f348 | 1133 | counter < dynrel_count; |
192b64e7 | 1134 | counter++, relptr++) |
5801f348 | 1135 | { |
0683ac4b | 1136 | arelent *rel = *relptr; |
26a859ec PS |
1137 | CORE_ADDR address = |
1138 | rel->address + ANOFFSET (section_offsets, SECT_OFF_DATA); | |
5801f348 | 1139 | |
0683ac4b PS |
1140 | switch (bfd_get_arch (abfd)) |
1141 | { | |
1142 | case bfd_arch_sparc: | |
1143 | if (rel->howto->type != RELOC_JMP_SLOT) | |
1144 | continue; | |
1145 | break; | |
1146 | case bfd_arch_m68k: | |
1147 | /* `16' is the type BFD produces for a jump table relocation. */ | |
1148 | if (rel->howto->type != 16) | |
1149 | continue; | |
5801f348 | 1150 | |
0683ac4b PS |
1151 | /* Adjust address in the jump table to point to |
1152 | the start of the bsr instruction. */ | |
1153 | address -= 2; | |
1154 | break; | |
1155 | default: | |
1156 | continue; | |
1157 | } | |
5801f348 | 1158 | |
b9e58503 | 1159 | name = (char *) bfd_asymbol_name (*rel->sym_ptr_ptr); |
ace4b8d7 FF |
1160 | prim_record_minimal_symbol (name, address, mst_solib_trampoline, |
1161 | objfile); | |
5801f348 | 1162 | } |
192b64e7 ILT |
1163 | |
1164 | do_cleanups (back_to); | |
5801f348 JK |
1165 | } |
1166 | ||
bd5635a1 RP |
1167 | /* Given pointers to an a.out symbol table in core containing dbx |
1168 | style data, setup partial_symtab's describing each source file for | |
3624c875 FF |
1169 | which debugging information is available. |
1170 | SYMFILE_NAME is the name of the file we are reading from | |
2af231b8 JG |
1171 | and SECTION_OFFSETS is the set of offsets for the various sections |
1172 | of the file (a set of zeros if the mainline program). */ | |
bd5635a1 RP |
1173 | |
1174 | static void | |
2af231b8 JG |
1175 | read_dbx_symtab (section_offsets, objfile, text_addr, text_size) |
1176 | struct section_offsets *section_offsets; | |
7d9884b9 | 1177 | struct objfile *objfile; |
bd5635a1 RP |
1178 | CORE_ADDR text_addr; |
1179 | int text_size; | |
1180 | { | |
139e2c0f SG |
1181 | register struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
1182 | struct internal_nlist nlist; | |
1183 | ||
bd5635a1 | 1184 | register char *namestring; |
bd5635a1 RP |
1185 | int nsl; |
1186 | int past_first_source_file = 0; | |
1187 | CORE_ADDR last_o_file_start = 0; | |
94f5a25f | 1188 | CORE_ADDR last_function_start = 0; |
0eb22669 | 1189 | struct cleanup *back_to; |
7d9884b9 | 1190 | bfd *abfd; |
3a179be1 | 1191 | int textlow_not_set; |
bd5635a1 | 1192 | |
bd5635a1 RP |
1193 | /* Current partial symtab */ |
1194 | struct partial_symtab *pst; | |
1195 | ||
1196 | /* List of current psymtab's include files */ | |
1197 | char **psymtab_include_list; | |
1198 | int includes_allocated; | |
1199 | int includes_used; | |
1200 | ||
1201 | /* Index within current psymtab dependency list */ | |
1202 | struct partial_symtab **dependency_list; | |
1203 | int dependencies_used, dependencies_allocated; | |
1204 | ||
9342ecb9 JG |
1205 | /* FIXME. We probably want to change stringtab_global rather than add this |
1206 | while processing every symbol entry. FIXME. */ | |
1207 | file_string_table_offset = 0; | |
1208 | next_file_string_table_offset = 0; | |
1209 | ||
3624c875 | 1210 | stringtab_global = DBX_STRINGTAB (objfile); |
bd5635a1 RP |
1211 | |
1212 | pst = (struct partial_symtab *) 0; | |
1213 | ||
1214 | includes_allocated = 30; | |
1215 | includes_used = 0; | |
1216 | psymtab_include_list = (char **) alloca (includes_allocated * | |
1217 | sizeof (char *)); | |
1218 | ||
1219 | dependencies_allocated = 30; | |
1220 | dependencies_used = 0; | |
1221 | dependency_list = | |
1222 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1223 | sizeof (struct partial_symtab *)); | |
1224 | ||
bd5635a1 | 1225 | /* Init bincl list */ |
021959e2 | 1226 | init_bincl_list (20, objfile); |
0eb22669 | 1227 | back_to = make_cleanup (free_bincl_list, objfile); |
bd5635a1 | 1228 | |
3416d90b | 1229 | last_source_file = NULL; |
bd5635a1 | 1230 | |
9d2b8d50 | 1231 | lowest_text_address = (CORE_ADDR)-1; |
bd5635a1 | 1232 | |
7d9884b9 JG |
1233 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ |
1234 | abfd = objfile->obfd; | |
bd5635a1 | 1235 | symbuf_end = symbuf_idx = 0; |
aab77d5f | 1236 | next_symbol_text_func = dbx_next_symbol_text; |
3a179be1 | 1237 | textlow_not_set = 1; |
bd5635a1 | 1238 | |
3624c875 | 1239 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
bd5635a1 RP |
1240 | { |
1241 | /* Get the symbol for this run and pull out some info */ | |
1242 | QUIT; /* allow this to be interruptable */ | |
1243 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1244 | fill_symbuf (abfd); |
bd5635a1 RP |
1245 | bufp = &symbuf[symbuf_idx++]; |
1246 | ||
1247 | /* | |
1248 | * Special case to speed up readin. | |
1249 | */ | |
139e2c0f SG |
1250 | if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE) |
1251 | continue; | |
bd5635a1 | 1252 | |
139e2c0f | 1253 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); |
94f5a25f | 1254 | OBJSTAT (objfile, n_stabs++); |
bd5635a1 RP |
1255 | |
1256 | /* Ok. There is a lot of code duplicated in the rest of this | |
1257 | switch statement (for efficiency reasons). Since I don't | |
1258 | like duplicating code, I will do my penance here, and | |
1259 | describe the code which is duplicated: | |
1260 | ||
1261 | *) The assignment to namestring. | |
1262 | *) The call to strchr. | |
1263 | *) The addition of a partial symbol the the two partial | |
1264 | symbol lists. This last is a large section of code, so | |
1265 | I've imbedded it in the following macro. | |
1266 | */ | |
1267 | ||
139e2c0f | 1268 | /* Set namestring based on nlist. If the string table index is invalid, |
bd5635a1 RP |
1269 | give a fake name, and print a single error message per symbol file read, |
1270 | rather than abort the symbol reading or flood the user with messages. */ | |
9342ecb9 JG |
1271 | |
1272 | /*FIXME: Too many adds and indirections in here for the inner loop. */ | |
bd5635a1 | 1273 | #define SET_NAMESTRING()\ |
139e2c0f | 1274 | if (((unsigned)CUR_SYMBOL_STRX + file_string_table_offset) >= \ |
9342ecb9 | 1275 | DBX_STRINGTAB_SIZE (objfile)) { \ |
51b80b00 | 1276 | complain (&string_table_offset_complaint, symnum); \ |
5801f348 | 1277 | namestring = "<bad string table offset>"; \ |
bd5635a1 | 1278 | } else \ |
139e2c0f | 1279 | namestring = CUR_SYMBOL_STRX + file_string_table_offset + \ |
9342ecb9 | 1280 | DBX_STRINGTAB (objfile) |
bd5635a1 | 1281 | |
139e2c0f SG |
1282 | #define CUR_SYMBOL_TYPE nlist.n_type |
1283 | #define CUR_SYMBOL_VALUE nlist.n_value | |
1284 | #define CUR_SYMBOL_STRX nlist.n_strx | |
7e258d18 | 1285 | #define DBXREAD_ONLY |
2af231b8 JG |
1286 | #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\ |
1287 | start_psymtab(ofile, secoff, fname, low, symoff, global_syms, static_syms) | |
3a179be1 SG |
1288 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set)\ |
1289 | end_psymtab(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set) | |
aab77d5f | 1290 | |
7e258d18 | 1291 | #include "partial-stab.h" |
bd5635a1 RP |
1292 | } |
1293 | ||
1294 | /* If there's stuff to be cleaned up, clean it up. */ | |
3624c875 | 1295 | if (DBX_SYMCOUNT (objfile) > 0 /* We have some syms */ |
9342ecb9 JG |
1296 | /*FIXME, does this have a bug at start address 0? */ |
1297 | && last_o_file_start | |
139e2c0f | 1298 | && objfile -> ei.entry_point < nlist.n_value |
3624c875 | 1299 | && objfile -> ei.entry_point >= last_o_file_start) |
bd5635a1 | 1300 | { |
3624c875 | 1301 | objfile -> ei.entry_file_lowpc = last_o_file_start; |
139e2c0f | 1302 | objfile -> ei.entry_file_highpc = nlist.n_value; |
bd5635a1 RP |
1303 | } |
1304 | ||
1305 | if (pst) | |
1306 | { | |
1307 | end_psymtab (pst, psymtab_include_list, includes_used, | |
9d2b8d50 JK |
1308 | symnum * symbol_size, |
1309 | (lowest_text_address == (CORE_ADDR)-1 | |
2fe3b329 PS |
1310 | ? (text_addr + section_offsets->offsets[SECT_OFF_TEXT]) |
1311 | : lowest_text_address) | |
9d2b8d50 | 1312 | + text_size, |
3a179be1 | 1313 | dependency_list, dependencies_used, textlow_not_set); |
bd5635a1 RP |
1314 | } |
1315 | ||
0eb22669 | 1316 | do_cleanups (back_to); |
bd5635a1 RP |
1317 | } |
1318 | ||
4a35d6e9 FF |
1319 | /* Allocate and partially fill a partial symtab. It will be |
1320 | completely filled at the end of the symbol list. | |
1321 | ||
1322 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1323 | is the address relative to which its symbols are (incremental) or 0 | |
1324 | (normal). */ | |
1325 | ||
bd5635a1 | 1326 | |
7e258d18 | 1327 | struct partial_symtab * |
2af231b8 | 1328 | start_psymtab (objfile, section_offsets, |
bd5635a1 | 1329 | filename, textlow, ldsymoff, global_syms, static_syms) |
7d9884b9 | 1330 | struct objfile *objfile; |
2af231b8 | 1331 | struct section_offsets *section_offsets; |
bd5635a1 RP |
1332 | char *filename; |
1333 | CORE_ADDR textlow; | |
1334 | int ldsymoff; | |
94f5a25f DP |
1335 | struct partial_symbol **global_syms; |
1336 | struct partial_symbol **static_syms; | |
bd5635a1 RP |
1337 | { |
1338 | struct partial_symtab *result = | |
2af231b8 | 1339 | start_psymtab_common(objfile, section_offsets, |
021959e2 | 1340 | filename, textlow, global_syms, static_syms); |
bd5635a1 | 1341 | |
021959e2 JG |
1342 | result->read_symtab_private = (char *) |
1343 | obstack_alloc (&objfile -> psymbol_obstack, sizeof (struct symloc)); | |
1344 | LDSYMOFF(result) = ldsymoff; | |
bd5635a1 | 1345 | result->read_symtab = dbx_psymtab_to_symtab; |
9342ecb9 JG |
1346 | SYMBOL_SIZE(result) = symbol_size; |
1347 | SYMBOL_OFFSET(result) = symbol_table_offset; | |
1348 | STRING_OFFSET(result) = string_table_offset; | |
1349 | FILE_STRING_OFFSET(result) = file_string_table_offset; | |
bd5635a1 | 1350 | |
2af231b8 JG |
1351 | /* If we're handling an ELF file, drag some section-relocation info |
1352 | for this source file out of the ELF symbol table, to compensate for | |
1353 | Sun brain death. This replaces the section_offsets in this psymtab, | |
1354 | if successful. */ | |
1355 | elfstab_offset_sections (objfile, result); | |
1356 | ||
2e4964ad FF |
1357 | /* Deduce the source language from the filename for this psymtab. */ |
1358 | psymtab_language = deduce_language_from_filename (filename); | |
1359 | ||
bd5635a1 RP |
1360 | return result; |
1361 | } | |
1362 | ||
cbba020f PS |
1363 | /* Close off the current usage of PST. |
1364 | Returns PST or NULL if the partial symtab was empty and thrown away. | |
bd5635a1 | 1365 | |
cbba020f | 1366 | FIXME: List variables and peculiarities of same. */ |
bd5635a1 | 1367 | |
cbba020f | 1368 | struct partial_symtab * |
bd5635a1 | 1369 | end_psymtab (pst, include_list, num_includes, capping_symbol_offset, |
3a179be1 | 1370 | capping_text, dependency_list, number_dependencies, textlow_not_set) |
bd5635a1 RP |
1371 | struct partial_symtab *pst; |
1372 | char **include_list; | |
1373 | int num_includes; | |
1374 | int capping_symbol_offset; | |
1375 | CORE_ADDR capping_text; | |
1376 | struct partial_symtab **dependency_list; | |
1377 | int number_dependencies; | |
3a179be1 | 1378 | int textlow_not_set; |
bd5635a1 RP |
1379 | { |
1380 | int i; | |
021959e2 | 1381 | struct objfile *objfile = pst -> objfile; |
bd5635a1 | 1382 | |
7e258d18 | 1383 | if (capping_symbol_offset != -1) |
3a179be1 | 1384 | LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst); |
bd5635a1 RP |
1385 | pst->texthigh = capping_text; |
1386 | ||
b9e58503 | 1387 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
9342ecb9 JG |
1388 | /* Under Solaris, the N_SO symbols always have a value of 0, |
1389 | instead of the usual address of the .o file. Therefore, | |
1390 | we have to do some tricks to fill in texthigh and textlow. | |
1391 | The first trick is in partial-stab.h: if we see a static | |
1392 | or global function, and the textlow for the current pst | |
3a179be1 SG |
1393 | is not set (ie: textlow_not_set), then we use that function's |
1394 | address for the textlow of the pst. */ | |
9342ecb9 | 1395 | |
b9e58503 | 1396 | /* Now, to fill in texthigh, we remember the last function seen |
9342ecb9 JG |
1397 | in the .o file (also in partial-stab.h). Also, there's a hack in |
1398 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field | |
1399 | to here via the misc_info field. Therefore, we can fill in | |
1400 | a reliable texthigh by taking the address plus size of the | |
b9e58503 | 1401 | last function in the file. */ |
9342ecb9 | 1402 | |
3a179be1 SG |
1403 | if (pst->texthigh == 0 && last_function_name) |
1404 | { | |
1405 | char *p; | |
1406 | int n; | |
1407 | struct minimal_symbol *minsym; | |
1408 | ||
1409 | p = strchr (last_function_name, ':'); | |
1410 | if (p == NULL) | |
1411 | p = last_function_name; | |
1412 | n = p - last_function_name; | |
1413 | p = alloca (n + 1); | |
1414 | strncpy (p, last_function_name, n); | |
1415 | p[n] = 0; | |
9342ecb9 | 1416 | |
3a179be1 | 1417 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
9342ecb9 | 1418 | |
3a179be1 SG |
1419 | if (minsym) |
1420 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) | |
1421 | + (long) MSYMBOL_INFO (minsym); | |
b9e58503 | 1422 | |
3a179be1 SG |
1423 | last_function_name = NULL; |
1424 | } | |
9342ecb9 JG |
1425 | |
1426 | /* this test will be true if the last .o file is only data */ | |
3a179be1 | 1427 | if (textlow_not_set) |
9342ecb9 | 1428 | pst->textlow = pst->texthigh; |
3a179be1 SG |
1429 | else |
1430 | { | |
1431 | struct partial_symtab *p1; | |
9342ecb9 | 1432 | |
3a179be1 SG |
1433 | /* If we know our own starting text address, then walk through all other |
1434 | psymtabs for this objfile, and if any didn't know their ending text | |
1435 | address, set it to our starting address. Take care to not set our | |
1436 | own ending address to our starting address, nor to set addresses on | |
1437 | `dependency' files that have both textlow and texthigh zero. */ | |
1438 | ||
1439 | ALL_OBJFILE_PSYMTABS (objfile, p1) | |
1440 | { | |
1441 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) | |
1442 | { | |
1443 | p1->texthigh = pst->textlow; | |
1444 | /* if this file has only data, then make textlow match texthigh */ | |
1445 | if (p1->textlow == 0) | |
1446 | p1->textlow = p1->texthigh; | |
1447 | } | |
1448 | } | |
9342ecb9 | 1449 | } |
9342ecb9 JG |
1450 | |
1451 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
b9e58503 | 1452 | #endif /* SOFUN_ADDRESS_MAYBE_MISSING. */ |
9342ecb9 | 1453 | |
bd5635a1 | 1454 | pst->n_global_syms = |
021959e2 | 1455 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); |
bd5635a1 | 1456 | pst->n_static_syms = |
021959e2 | 1457 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); |
bd5635a1 RP |
1458 | |
1459 | pst->number_of_dependencies = number_dependencies; | |
1460 | if (number_dependencies) | |
1461 | { | |
1462 | pst->dependencies = (struct partial_symtab **) | |
021959e2 | 1463 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 | 1464 | number_dependencies * sizeof (struct partial_symtab *)); |
7e258d18 | 1465 | memcpy (pst->dependencies, dependency_list, |
bd5635a1 RP |
1466 | number_dependencies * sizeof (struct partial_symtab *)); |
1467 | } | |
1468 | else | |
1469 | pst->dependencies = 0; | |
1470 | ||
1471 | for (i = 0; i < num_includes; i++) | |
1472 | { | |
bd5635a1 | 1473 | struct partial_symtab *subpst = |
021959e2 | 1474 | allocate_psymtab (include_list[i], objfile); |
7d9884b9 | 1475 | |
2af231b8 | 1476 | subpst->section_offsets = pst->section_offsets; |
021959e2 JG |
1477 | subpst->read_symtab_private = |
1478 | (char *) obstack_alloc (&objfile->psymbol_obstack, | |
1479 | sizeof (struct symloc)); | |
4a35d6e9 FF |
1480 | LDSYMOFF(subpst) = |
1481 | LDSYMLEN(subpst) = | |
bd5635a1 RP |
1482 | subpst->textlow = |
1483 | subpst->texthigh = 0; | |
1484 | ||
3f83182d JG |
1485 | /* We could save slight bits of space by only making one of these, |
1486 | shared by the entire set of include files. FIXME-someday. */ | |
bd5635a1 | 1487 | subpst->dependencies = (struct partial_symtab **) |
021959e2 | 1488 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 RP |
1489 | sizeof (struct partial_symtab *)); |
1490 | subpst->dependencies[0] = pst; | |
1491 | subpst->number_of_dependencies = 1; | |
1492 | ||
1493 | subpst->globals_offset = | |
1494 | subpst->n_global_syms = | |
1495 | subpst->statics_offset = | |
1496 | subpst->n_static_syms = 0; | |
1497 | ||
1498 | subpst->readin = 0; | |
9a822037 | 1499 | subpst->symtab = 0; |
2707b48a | 1500 | subpst->read_symtab = pst->read_symtab; |
bd5635a1 RP |
1501 | } |
1502 | ||
021959e2 | 1503 | sort_pst_symbols (pst); |
bd5635a1 | 1504 | |
f9623881 JG |
1505 | /* If there is already a psymtab or symtab for a file of this name, remove it. |
1506 | (If there is a symtab, more drastic things also happen.) | |
1507 | This happens in VxWorks. */ | |
1508 | free_named_symtabs (pst->filename); | |
1509 | ||
7d9884b9 | 1510 | if (num_includes == 0 |
5801f348 JK |
1511 | && number_dependencies == 0 |
1512 | && pst->n_global_syms == 0 | |
1513 | && pst->n_static_syms == 0) | |
1514 | { | |
1515 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
1516 | it is on the obstack, but we can forget to chain it on the list. */ | |
1517 | /* Empty psymtabs happen as a result of header files which don't have | |
1518 | any symbols in them. There can be a lot of them. But this check | |
1519 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
1520 | is not empty, but we don't realize that. Fixing that without slowing | |
1521 | things down might be tricky. */ | |
1522 | struct partial_symtab *prev_pst; | |
1523 | ||
1524 | /* First, snip it out of the psymtab chain */ | |
1525 | ||
1526 | if (pst->objfile->psymtabs == pst) | |
1527 | pst->objfile->psymtabs = pst->next; | |
1528 | else | |
1529 | for (prev_pst = pst->objfile->psymtabs; prev_pst; prev_pst = pst->next) | |
1530 | if (prev_pst->next == pst) | |
1531 | prev_pst->next = pst->next; | |
318bf84f | 1532 | |
5801f348 | 1533 | /* Next, put it on a free list for recycling */ |
318bf84f | 1534 | |
5801f348 JK |
1535 | pst->next = pst->objfile->free_psymtabs; |
1536 | pst->objfile->free_psymtabs = pst; | |
cbba020f | 1537 | |
5801f348 JK |
1538 | /* Indicate that psymtab was thrown away. */ |
1539 | pst = (struct partial_symtab *)NULL; | |
1540 | } | |
cbba020f | 1541 | return pst; |
bd5635a1 RP |
1542 | } |
1543 | \f | |
1544 | static void | |
4c07f28d | 1545 | dbx_psymtab_to_symtab_1 (pst) |
bd5635a1 | 1546 | struct partial_symtab *pst; |
bd5635a1 RP |
1547 | { |
1548 | struct cleanup *old_chain; | |
1549 | int i; | |
1550 | ||
1551 | if (!pst) | |
1552 | return; | |
1553 | ||
1554 | if (pst->readin) | |
1555 | { | |
199b2450 | 1556 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
bd5635a1 RP |
1557 | pst->filename); |
1558 | return; | |
1559 | } | |
1560 | ||
afe4ca15 | 1561 | /* Read in all partial symtabs on which this one is dependent */ |
bd5635a1 RP |
1562 | for (i = 0; i < pst->number_of_dependencies; i++) |
1563 | if (!pst->dependencies[i]->readin) | |
1564 | { | |
1565 | /* Inform about additional files that need to be read in. */ | |
1566 | if (info_verbose) | |
1567 | { | |
199b2450 | 1568 | fputs_filtered (" ", gdb_stdout); |
bd5635a1 | 1569 | wrap_here (""); |
199b2450 | 1570 | fputs_filtered ("and ", gdb_stdout); |
bd5635a1 RP |
1571 | wrap_here (""); |
1572 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
1573 | wrap_here (""); /* Flush output */ | |
199b2450 | 1574 | gdb_flush (gdb_stdout); |
bd5635a1 | 1575 | } |
4c07f28d | 1576 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); |
bd5635a1 RP |
1577 | } |
1578 | ||
4a35d6e9 | 1579 | if (LDSYMLEN(pst)) /* Otherwise it's a dummy */ |
bd5635a1 RP |
1580 | { |
1581 | /* Init stuff necessary for reading in symbols */ | |
3416d90b | 1582 | stabsread_init (); |
c0302457 | 1583 | buildsym_init (); |
bd5635a1 | 1584 | old_chain = make_cleanup (really_free_pendings, 0); |
9342ecb9 | 1585 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
4c07f28d FF |
1586 | symbol_size = SYMBOL_SIZE (pst); |
1587 | ||
1588 | /* Read in this file's symbols */ | |
2c7ab4ca | 1589 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); |
574dac8e | 1590 | read_ofile_symtab (pst); |
9404978d | 1591 | sort_symtab_syms (pst->symtab); |
bd5635a1 RP |
1592 | |
1593 | do_cleanups (old_chain); | |
1594 | } | |
1595 | ||
1596 | pst->readin = 1; | |
1597 | } | |
1598 | ||
ac88ca20 JG |
1599 | /* Read in all of the symbols for a given psymtab for real. |
1600 | Be verbose about it if the user wants that. */ | |
1601 | ||
bd5635a1 RP |
1602 | static void |
1603 | dbx_psymtab_to_symtab (pst) | |
1604 | struct partial_symtab *pst; | |
1605 | { | |
bd5635a1 | 1606 | bfd *sym_bfd; |
bd5635a1 RP |
1607 | |
1608 | if (!pst) | |
1609 | return; | |
1610 | ||
1611 | if (pst->readin) | |
1612 | { | |
199b2450 | 1613 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
bd5635a1 RP |
1614 | pst->filename); |
1615 | return; | |
1616 | } | |
1617 | ||
4a35d6e9 | 1618 | if (LDSYMLEN(pst) || pst->number_of_dependencies) |
bd5635a1 RP |
1619 | { |
1620 | /* Print the message now, before reading the string table, | |
1621 | to avoid disconcerting pauses. */ | |
1622 | if (info_verbose) | |
1623 | { | |
1624 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
199b2450 | 1625 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
1626 | } |
1627 | ||
7d9884b9 | 1628 | sym_bfd = pst->objfile->obfd; |
bd5635a1 | 1629 | |
aab77d5f PB |
1630 | next_symbol_text_func = dbx_next_symbol_text; |
1631 | ||
4c07f28d | 1632 | dbx_psymtab_to_symtab_1 (pst); |
bd5635a1 RP |
1633 | |
1634 | /* Match with global symbols. This only needs to be done once, | |
1635 | after all of the symtabs and dependencies have been read in. */ | |
021959e2 | 1636 | scan_file_globals (pst->objfile); |
bd5635a1 | 1637 | |
bd5635a1 RP |
1638 | /* Finish up the debug error message. */ |
1639 | if (info_verbose) | |
1640 | printf_filtered ("done.\n"); | |
1641 | } | |
1642 | } | |
1643 | ||
574dac8e | 1644 | /* Read in a defined section of a specific object file's symbols. */ |
9342ecb9 | 1645 | |
574dac8e JK |
1646 | static void |
1647 | read_ofile_symtab (pst) | |
1648 | struct partial_symtab *pst; | |
bd5635a1 RP |
1649 | { |
1650 | register char *namestring; | |
139e2c0f SG |
1651 | register struct external_nlist *bufp; |
1652 | struct internal_nlist nlist; | |
bd5635a1 | 1653 | unsigned char type; |
afe4ca15 | 1654 | unsigned max_symnum; |
7d9884b9 | 1655 | register bfd *abfd; |
574dac8e JK |
1656 | struct objfile *objfile; |
1657 | int sym_offset; /* Offset to start of symbols to read */ | |
1658 | int sym_size; /* Size of symbols to read */ | |
1659 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
1660 | int text_size; /* Size of text segment for symbols */ | |
1661 | struct section_offsets *section_offsets; | |
1662 | ||
1663 | objfile = pst->objfile; | |
1664 | sym_offset = LDSYMOFF(pst); | |
1665 | sym_size = LDSYMLEN(pst); | |
1666 | text_offset = pst->textlow; | |
1667 | text_size = pst->texthigh - pst->textlow; | |
1668 | section_offsets = pst->section_offsets; | |
7d9884b9 | 1669 | |
021959e2 | 1670 | current_objfile = objfile; |
3416d90b | 1671 | subfile_stack = NULL; |
bd5635a1 | 1672 | |
3624c875 | 1673 | stringtab_global = DBX_STRINGTAB (objfile); |
3416d90b | 1674 | last_source_file = NULL; |
bd5635a1 | 1675 | |
7d9884b9 JG |
1676 | abfd = objfile->obfd; |
1677 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ | |
bd5635a1 RP |
1678 | symbuf_end = symbuf_idx = 0; |
1679 | ||
1680 | /* It is necessary to actually read one symbol *before* the start | |
1681 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
1682 | occurs before the N_SO symbol. | |
1683 | ||
1684 | Detecting this in read_dbx_symtab | |
1685 | would slow down initial readin, so we look for it here instead. */ | |
9342ecb9 | 1686 | if (!processing_acc_compilation && sym_offset >= (int)symbol_size) |
bd5635a1 | 1687 | { |
2c7ab4ca | 1688 | bfd_seek (symfile_bfd, sym_offset - symbol_size, SEEK_CUR); |
7d9884b9 | 1689 | fill_symbuf (abfd); |
bd5635a1 | 1690 | bufp = &symbuf[symbuf_idx++]; |
139e2c0f | 1691 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); |
94f5a25f | 1692 | OBJSTAT (objfile, n_stabs++); |
bd5635a1 | 1693 | |
afe4ca15 | 1694 | SET_NAMESTRING (); |
bd5635a1 | 1695 | |
1aed6766 | 1696 | processing_gcc_compilation = 0; |
139e2c0f | 1697 | if (nlist.n_type == N_TEXT) |
1aed6766 | 1698 | { |
db2302cb PS |
1699 | const char *tempstring = namestring; |
1700 | ||
2e4964ad | 1701 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1702 | processing_gcc_compilation = 1; |
2e4964ad | 1703 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1704 | processing_gcc_compilation = 2; |
db2302cb PS |
1705 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) |
1706 | ++tempstring; | |
1707 | if (STREQN (tempstring, "__gnu_compiled", 14)) | |
1708 | processing_gcc_compilation = 2; | |
1aed6766 | 1709 | } |
3416d90b FF |
1710 | |
1711 | /* Try to select a C++ demangling based on the compilation unit | |
1712 | producer. */ | |
1713 | ||
1714 | if (processing_gcc_compilation) | |
1715 | { | |
1aed6766 | 1716 | if (AUTO_DEMANGLING) |
3416d90b FF |
1717 | { |
1718 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1719 | } | |
3416d90b | 1720 | } |
bd5635a1 RP |
1721 | } |
1722 | else | |
1723 | { | |
1724 | /* The N_SO starting this symtab is the first symbol, so we | |
1725 | better not check the symbol before it. I'm not this can | |
1726 | happen, but it doesn't hurt to check for it. */ | |
2c7ab4ca | 1727 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); |
bd5635a1 RP |
1728 | processing_gcc_compilation = 0; |
1729 | } | |
1730 | ||
1731 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1732 | fill_symbuf (abfd); |
bd5635a1 | 1733 | bufp = &symbuf[symbuf_idx]; |
139e2c0f | 1734 | if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO) |
bd5635a1 RP |
1735 | error("First symbol in segment of executable not a source symbol"); |
1736 | ||
afe4ca15 JG |
1737 | max_symnum = sym_size / symbol_size; |
1738 | ||
bd5635a1 | 1739 | for (symnum = 0; |
afe4ca15 | 1740 | symnum < max_symnum; |
bd5635a1 RP |
1741 | symnum++) |
1742 | { | |
1743 | QUIT; /* Allow this to be interruptable */ | |
1744 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1745 | fill_symbuf(abfd); |
bd5635a1 | 1746 | bufp = &symbuf[symbuf_idx++]; |
139e2c0f | 1747 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); |
94f5a25f | 1748 | OBJSTAT (objfile, n_stabs++); |
bd5635a1 | 1749 | |
139e2c0f | 1750 | type = bfd_h_get_8 (abfd, bufp->e_type); |
bd5635a1 | 1751 | |
afe4ca15 | 1752 | SET_NAMESTRING (); |
bd5635a1 | 1753 | |
7d9884b9 | 1754 | if (type & N_STAB) { |
139e2c0f | 1755 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
2af231b8 | 1756 | namestring, section_offsets, objfile); |
7d9884b9 | 1757 | } |
bd5635a1 RP |
1758 | /* We skip checking for a new .o or -l file; that should never |
1759 | happen in this routine. */ | |
1aed6766 | 1760 | else if (type == N_TEXT) |
3416d90b FF |
1761 | { |
1762 | /* I don't think this code will ever be executed, because | |
1763 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
1764 | the N_SO symbol which starts this source file. | |
1765 | However, there is no reason not to accept | |
1766 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
1aed6766 | 1767 | |
2e4964ad | 1768 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1769 | processing_gcc_compilation = 1; |
2e4964ad | 1770 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 SG |
1771 | processing_gcc_compilation = 2; |
1772 | ||
1aed6766 | 1773 | if (AUTO_DEMANGLING) |
3416d90b FF |
1774 | { |
1775 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1776 | } | |
3416d90b | 1777 | } |
bd5635a1 RP |
1778 | else if (type & N_EXT || type == (unsigned char)N_TEXT |
1779 | || type == (unsigned char)N_NBTEXT | |
0c4d2cc2 | 1780 | ) { |
bd5635a1 RP |
1781 | /* Global symbol: see if we came across a dbx defintion for |
1782 | a corresponding symbol. If so, store the value. Remove | |
1783 | syms from the chain when their values are stored, but | |
1784 | search the whole chain, as there may be several syms from | |
1785 | different files with the same name. */ | |
1786 | /* This is probably not true. Since the files will be read | |
1787 | in one at a time, each reference to a global symbol will | |
1788 | be satisfied in each file as it appears. So we skip this | |
1789 | section. */ | |
1790 | ; | |
0c4d2cc2 | 1791 | } |
bd5635a1 | 1792 | } |
9404978d | 1793 | |
021959e2 | 1794 | current_objfile = NULL; |
9342ecb9 JG |
1795 | |
1796 | /* In a Solaris elf file, this variable, which comes from the | |
1797 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
1798 | which comes from pst->textlow is correct. */ | |
1799 | if (last_source_start_addr == 0) | |
1800 | last_source_start_addr = text_offset; | |
1801 | ||
94f5a25f DP |
1802 | /* In reordered executables last_source_start_addr may not be the |
1803 | lower bound for this symtab, instead use text_offset which comes | |
1804 | from pst->textlow which is correct. */ | |
1805 | if (last_source_start_addr > text_offset) | |
1806 | last_source_start_addr = text_offset; | |
1807 | ||
1808 | pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT); | |
1809 | ||
d719efc6 DP |
1810 | /* Process items which we had to "process_later" due to dependancies |
1811 | on other stabs. */ | |
1812 | process_now (objfile); | |
94f5a25f | 1813 | |
3416d90b | 1814 | end_stabs (); |
bd5635a1 | 1815 | } |
574dac8e | 1816 | |
bd5635a1 | 1817 | \f |
c55e6167 JG |
1818 | /* This handles a single symbol from the symbol-file, building symbols |
1819 | into a GDB symtab. It takes these arguments and an implicit argument. | |
1820 | ||
1821 | TYPE is the type field of the ".stab" symbol entry. | |
1822 | DESC is the desc field of the ".stab" entry. | |
1823 | VALU is the value field of the ".stab" entry. | |
1824 | NAME is the symbol name, in our address space. | |
2af231b8 JG |
1825 | SECTION_OFFSETS is a set of amounts by which the sections of this object |
1826 | file were relocated when it was loaded into memory. | |
1827 | All symbols that refer | |
1828 | to memory locations need to be offset by these amounts. | |
9342ecb9 | 1829 | OBJFILE is the object file from which we are reading symbols. |
c55e6167 JG |
1830 | It is used in end_symtab. */ |
1831 | ||
7e258d18 | 1832 | void |
2af231b8 | 1833 | process_one_symbol (type, desc, valu, name, section_offsets, objfile) |
bd5635a1 RP |
1834 | int type, desc; |
1835 | CORE_ADDR valu; | |
1836 | char *name; | |
2af231b8 | 1837 | struct section_offsets *section_offsets; |
9342ecb9 | 1838 | struct objfile *objfile; |
bd5635a1 | 1839 | { |
a5e6391b JK |
1840 | #ifdef SUN_FIXED_LBRAC_BUG |
1841 | /* If SUN_FIXED_LBRAC_BUG is defined, then it tells us whether we need | |
1842 | to correct the address of N_LBRAC's. If it is not defined, then | |
1843 | we never need to correct the addresses. */ | |
1844 | ||
0cf9329b | 1845 | /* This records the last pc address we've seen. We depend on there being |
bd5635a1 RP |
1846 | an SLINE or FUN or SO before the first LBRAC, since the variable does |
1847 | not get reset in between reads of different symbol files. */ | |
1848 | static CORE_ADDR last_pc_address; | |
a5e6391b | 1849 | #endif |
8357834f | 1850 | |
bd5635a1 | 1851 | register struct context_stack *new; |
9342ecb9 JG |
1852 | /* This remembers the address of the start of a function. It is used |
1853 | because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries are | |
1854 | relative to the current function's start address. On systems | |
2af231b8 JG |
1855 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, and is |
1856 | used to relocate these symbol types rather than SECTION_OFFSETS. */ | |
9342ecb9 | 1857 | static CORE_ADDR function_start_offset; |
bd5635a1 | 1858 | |
8357834f | 1859 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this source |
b8ec9a79 | 1860 | file. Used to detect the SunPRO solaris compiler. */ |
4d57c599 | 1861 | static int n_opt_found; |
8357834f | 1862 | |
b8ec9a79 JK |
1863 | /* The stab type used for the definition of the last function. |
1864 | N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */ | |
1865 | static int function_stab_type = 0; | |
1866 | ||
574dac8e JK |
1867 | if (!block_address_function_relative) |
1868 | /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the | |
1869 | function start address, so just use the text offset. */ | |
1870 | function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
51b80b00 | 1871 | |
bd5635a1 RP |
1872 | /* Something is wrong if we see real data before |
1873 | seeing a source file name. */ | |
1874 | ||
3416d90b | 1875 | if (last_source_file == NULL && type != (unsigned char)N_SO) |
bd5635a1 | 1876 | { |
a5e6391b JK |
1877 | /* Ignore any symbols which appear before an N_SO symbol. Currently |
1878 | no one puts symbols there, but we should deal gracefully with the | |
1879 | case. A complain()t might be in order (if !IGNORE_SYMBOL (type)), | |
1880 | but this should not be an error (). */ | |
1881 | return; | |
bd5635a1 RP |
1882 | } |
1883 | ||
1884 | switch (type) | |
1885 | { | |
1886 | case N_FUN: | |
1887 | case N_FNAME: | |
94f5a25f | 1888 | |
139e2c0f | 1889 | if (*name == '\000') |
94f5a25f DP |
1890 | { |
1891 | /* This N_FUN marks the end of a function. This closes off the | |
1892 | current block. */ | |
1893 | within_function = 0; | |
1894 | new = pop_context (); | |
1895 | ||
1896 | /* Make a block for the local symbols within. */ | |
1897 | finish_block (new->name, &local_symbols, new->old_blocks, | |
609fd033 | 1898 | new->start_addr, new->start_addr + valu, |
94f5a25f DP |
1899 | objfile); |
1900 | break; | |
1901 | } | |
1902 | ||
2af231b8 JG |
1903 | /* Relocate for dynamic loading */ |
1904 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
b8ec9a79 | 1905 | goto define_a_symbol; |
bd5635a1 | 1906 | |
bd5635a1 RP |
1907 | case N_LBRAC: |
1908 | /* This "symbol" just indicates the start of an inner lexical | |
1909 | context within a function. */ | |
1910 | ||
b9e58503 PS |
1911 | /* Ignore extra outermost context from SunPRO cc and acc. */ |
1912 | if (n_opt_found && desc == 1) | |
1913 | break; | |
1914 | ||
574dac8e JK |
1915 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1916 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1917 | valu += function_start_offset; |
c55e6167 | 1918 | #else |
574dac8e JK |
1919 | if (block_address_function_relative) |
1920 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1921 | valu += function_start_offset; | |
1922 | else | |
1923 | /* On most machines, the block addresses are relative to the | |
1924 | N_SO, the linker did not relocate them (sigh). */ | |
1925 | valu += last_source_start_addr; | |
bd5635a1 RP |
1926 | #endif |
1927 | ||
a5e6391b | 1928 | #ifdef SUN_FIXED_LBRAC_BUG |
8357834f | 1929 | if (!SUN_FIXED_LBRAC_BUG && valu < last_pc_address) { |
bd5635a1 | 1930 | /* Patch current LBRAC pc value to match last handy pc value */ |
51b80b00 | 1931 | complain (&lbrac_complaint); |
bd5635a1 RP |
1932 | valu = last_pc_address; |
1933 | } | |
a5e6391b | 1934 | #endif |
7d9884b9 | 1935 | new = push_context (desc, valu); |
bd5635a1 RP |
1936 | break; |
1937 | ||
1938 | case N_RBRAC: | |
1939 | /* This "symbol" just indicates the end of an inner lexical | |
1940 | context that was started with N_LBRAC. */ | |
1941 | ||
b9e58503 PS |
1942 | /* Ignore extra outermost context from SunPRO cc and acc. */ |
1943 | if (n_opt_found && desc == 1) | |
1944 | break; | |
1945 | ||
574dac8e JK |
1946 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1947 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1948 | valu += function_start_offset; |
c55e6167 | 1949 | #else |
574dac8e JK |
1950 | if (block_address_function_relative) |
1951 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1952 | valu += function_start_offset; | |
1953 | else | |
1954 | /* On most machines, the block addresses are relative to the | |
1955 | N_SO, the linker did not relocate them (sigh). */ | |
1956 | valu += last_source_start_addr; | |
bd5635a1 RP |
1957 | #endif |
1958 | ||
7d9884b9 | 1959 | new = pop_context(); |
bd5635a1 | 1960 | if (desc != new->depth) |
51b80b00 | 1961 | complain (&lbrac_mismatch_complaint, symnum); |
bd5635a1 RP |
1962 | |
1963 | /* Some compilers put the variable decls inside of an | |
1964 | LBRAC/RBRAC block. This macro should be nonzero if this | |
1965 | is true. DESC is N_DESC from the N_RBRAC symbol. | |
0cf9329b PB |
1966 | GCC_P is true if we've detected the GCC_COMPILED_SYMBOL |
1967 | or the GCC2_COMPILED_SYMBOL. */ | |
bd5635a1 RP |
1968 | #if !defined (VARIABLES_INSIDE_BLOCK) |
1969 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 0 | |
1970 | #endif | |
1971 | ||
1972 | /* Can only use new->locals as local symbols here if we're in | |
1973 | gcc or on a machine that puts them before the lbrack. */ | |
1974 | if (!VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
1975 | local_symbols = new->locals; | |
1976 | ||
2f8c3639 JL |
1977 | if (context_stack_depth |
1978 | > !VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
bd5635a1 | 1979 | { |
2f8c3639 JL |
1980 | /* This is not the outermost LBRAC...RBRAC pair in the function, |
1981 | its local symbols preceded it, and are the ones just recovered | |
1982 | from the context stack. Define the block for them (but don't | |
1983 | bother if the block contains no symbols. Should we complain | |
1984 | on blocks without symbols? I can't think of any useful purpose | |
1985 | for them). */ | |
1986 | if (local_symbols != NULL) | |
bd5635a1 | 1987 | { |
2f8c3639 JL |
1988 | /* Muzzle a compiler bug that makes end < start. (which |
1989 | compilers? Is this ever harmful?). */ | |
1990 | if (new->start_addr > valu) | |
1991 | { | |
1992 | complain (&lbrac_rbrac_complaint); | |
1993 | new->start_addr = valu; | |
1994 | } | |
1995 | /* Make a block for the local symbols within. */ | |
1996 | finish_block (0, &local_symbols, new->old_blocks, | |
1997 | new->start_addr, valu, objfile); | |
bd5635a1 | 1998 | } |
bd5635a1 RP |
1999 | } |
2000 | else | |
2001 | { | |
2f8c3639 JL |
2002 | /* This is the outermost LBRAC...RBRAC pair. There is no |
2003 | need to do anything; leave the symbols that preceded it | |
2004 | to be attached to the function's own block. We need to | |
2005 | indicate that we just moved outside of the function. */ | |
bd5635a1 RP |
2006 | within_function = 0; |
2007 | } | |
2f8c3639 | 2008 | |
bd5635a1 RP |
2009 | if (VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) |
2010 | /* Now pop locals of block just finished. */ | |
2011 | local_symbols = new->locals; | |
2012 | break; | |
2013 | ||
9bb30452 | 2014 | case N_FN: |
6150cc73 | 2015 | case N_FN_SEQ: |
9bb30452 | 2016 | /* This kind of symbol indicates the start of an object file. */ |
2af231b8 JG |
2017 | /* Relocate for dynamic loading */ |
2018 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
bd5635a1 RP |
2019 | break; |
2020 | ||
2021 | case N_SO: | |
2022 | /* This type of symbol indicates the start of data | |
2023 | for one source file. | |
2024 | Finish the symbol table of the previous source file | |
2025 | (if any) and start accumulating a new symbol table. */ | |
2af231b8 JG |
2026 | /* Relocate for dynamic loading */ |
2027 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c55e6167 | 2028 | |
8357834f JK |
2029 | n_opt_found = 0; |
2030 | ||
a5e6391b | 2031 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 2032 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 2033 | #endif |
8357834f | 2034 | |
bd5635a1 RP |
2035 | #ifdef PCC_SOL_BROKEN |
2036 | /* pcc bug, occasionally puts out SO for SOL. */ | |
2037 | if (context_stack_depth > 0) | |
2038 | { | |
2039 | start_subfile (name, NULL); | |
2040 | break; | |
2041 | } | |
2042 | #endif | |
2043 | if (last_source_file) | |
7e258d18 PB |
2044 | { |
2045 | /* Check if previous symbol was also an N_SO (with some | |
2046 | sanity checks). If so, that one was actually the directory | |
2047 | name, and the current one is the real file name. | |
2048 | Patch things up. */ | |
6985bc54 | 2049 | if (previous_stab_code == (unsigned char) N_SO) |
7e258d18 | 2050 | { |
3416d90b | 2051 | patch_subfile_names (current_subfile, name); |
c72af089 | 2052 | break; /* Ignore repeated SOs */ |
7e258d18 | 2053 | } |
94f5a25f | 2054 | end_symtab (valu, objfile, SECT_OFF_TEXT); |
3416d90b | 2055 | end_stabs (); |
7e258d18 | 2056 | } |
320f93f7 SG |
2057 | |
2058 | /* Null name means this just marks the end of text for this .o file. | |
2059 | Don't start a new symtab in this case. */ | |
2060 | if (*name == '\000') | |
2061 | break; | |
2062 | ||
3416d90b | 2063 | start_stabs (); |
bd5635a1 | 2064 | start_symtab (name, NULL, valu); |
609fd033 | 2065 | record_debugformat ("stabs"); |
bd5635a1 RP |
2066 | break; |
2067 | ||
2068 | case N_SOL: | |
2069 | /* This type of symbol indicates the start of data for | |
2070 | a sub-source-file, one whose contents were copied or | |
2071 | included in the compilation of the main source file | |
2072 | (whose name was given in the N_SO symbol.) */ | |
2af231b8 JG |
2073 | /* Relocate for dynamic loading */ |
2074 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
784fd92b | 2075 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
2076 | break; |
2077 | ||
2078 | case N_BINCL: | |
2079 | push_subfile (); | |
2080 | add_new_header_file (name, valu); | |
784fd92b | 2081 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
2082 | break; |
2083 | ||
2084 | case N_EINCL: | |
784fd92b | 2085 | start_subfile (pop_subfile (), current_subfile->dirname); |
bd5635a1 RP |
2086 | break; |
2087 | ||
2088 | case N_EXCL: | |
2089 | add_old_header_file (name, valu); | |
2090 | break; | |
2091 | ||
2092 | case N_SLINE: | |
2093 | /* This type of "symbol" really just records | |
2094 | one line-number -- core-address correspondence. | |
2095 | Enter it in the line list for this symbol table. */ | |
9342ecb9 JG |
2096 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
2097 | valu += function_start_offset; | |
a5e6391b | 2098 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 2099 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 2100 | #endif |
4137c5fc | 2101 | record_line (current_subfile, desc, valu); |
bd5635a1 RP |
2102 | break; |
2103 | ||
2104 | case N_BCOMM: | |
4d57c599 | 2105 | common_block_start (name, objfile); |
bd5635a1 RP |
2106 | break; |
2107 | ||
2108 | case N_ECOMM: | |
4d57c599 JK |
2109 | common_block_end (objfile); |
2110 | break; | |
bd5635a1 | 2111 | |
2af231b8 JG |
2112 | /* The following symbol types need to have the appropriate offset added |
2113 | to their value; then we process symbol definitions in the name. */ | |
2114 | ||
2115 | case N_STSYM: /* Static symbol in data seg */ | |
2116 | case N_LCSYM: /* Static symbol in BSS seg */ | |
2117 | case N_ROSYM: /* Static symbol in Read-only data seg */ | |
4d57c599 JK |
2118 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
2119 | Solaris2's stabs-in-elf makes *most* symbols relative | |
2120 | but leaves a few absolute (at least for Solaris 2.1 and version | |
2121 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on the fence. | |
2af231b8 JG |
2122 | .stab "foo:S...",N_STSYM is absolute (ld relocates it) |
2123 | .stab "foo:V...",N_STSYM is relative (section base subtracted). | |
2124 | This leaves us no choice but to search for the 'S' or 'V'... | |
2125 | (or pass the whole section_offsets stuff down ONE MORE function | |
4d57c599 | 2126 | call level, which we really don't want to do). */ |
2af231b8 JG |
2127 | { |
2128 | char *p; | |
a66e8382 SG |
2129 | |
2130 | /* .o files and NLMs have non-zero text seg offsets, but don't need | |
2131 | their static syms offset in this fashion. XXX - This is really a | |
2132 | crock that should be fixed in the solib handling code so that I | |
2133 | don't have to work around it here. */ | |
2134 | ||
2135 | if (!symfile_relocatable) | |
2af231b8 | 2136 | { |
a66e8382 SG |
2137 | p = strchr (name, ':'); |
2138 | if (p != 0 && p[1] == 'S') | |
2139 | { | |
2140 | /* The linker relocated it. We don't want to add an | |
2141 | elfstab_offset_sections-type offset, but we *do* want | |
2142 | to add whatever solib.c passed to symbol_file_add as | |
2143 | addr (this is known to affect SunOS4, and I suspect ELF | |
2144 | too). Since elfstab_offset_sections currently does not | |
2145 | muck with the text offset (there is no Ttext.text | |
2146 | symbol), we can get addr from the text offset. If | |
2147 | elfstab_offset_sections ever starts dealing with the | |
2148 | text offset, and we still need to do this, we need to | |
2149 | invent a SECT_OFF_ADDR_KLUDGE or something. */ | |
2150 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2151 | goto define_a_symbol; | |
2152 | } | |
2af231b8 JG |
2153 | } |
2154 | /* Since it's not the kludge case, re-dispatch to the right handler. */ | |
2155 | switch (type) { | |
2156 | case N_STSYM: goto case_N_STSYM; | |
2157 | case N_LCSYM: goto case_N_LCSYM; | |
2158 | case N_ROSYM: goto case_N_ROSYM; | |
2159 | default: abort(); | |
2160 | } | |
2161 | } | |
2162 | ||
2163 | case_N_STSYM: /* Static symbol in data seg */ | |
c55e6167 | 2164 | case N_DSLINE: /* Source line number, data seg */ |
2af231b8 JG |
2165 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA); |
2166 | goto define_a_symbol; | |
2167 | ||
2168 | case_N_LCSYM: /* Static symbol in BSS seg */ | |
c55e6167 JG |
2169 | case N_BSLINE: /* Source line number, bss seg */ |
2170 | /* N_BROWS: overlaps with N_BSLINE */ | |
2af231b8 JG |
2171 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS); |
2172 | goto define_a_symbol; | |
2173 | ||
2174 | case_N_ROSYM: /* Static symbol in Read-only data seg */ | |
2175 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA); | |
2176 | goto define_a_symbol; | |
2177 | ||
c55e6167 | 2178 | case N_ENTRY: /* Alternate entry point */ |
2af231b8 JG |
2179 | /* Relocate for dynamic loading */ |
2180 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2181 | goto define_a_symbol; | |
c55e6167 | 2182 | |
4f470205 JK |
2183 | /* The following symbol types we don't know how to process. Handle |
2184 | them in a "default" way, but complain to people who care. */ | |
2185 | default: | |
2186 | case N_CATCH: /* Exception handler catcher */ | |
2187 | case N_EHDECL: /* Exception handler name */ | |
2188 | case N_PC: /* Global symbol in Pascal */ | |
2189 | case N_M2C: /* Modula-2 compilation unit */ | |
2190 | /* N_MOD2: overlaps with N_EHDECL */ | |
2191 | case N_SCOPE: /* Modula-2 scope information */ | |
2192 | case N_ECOML: /* End common (local name) */ | |
2193 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
2194 | case N_NBDATA: | |
2195 | case N_NBBSS: | |
2196 | case N_NBSTS: | |
2197 | case N_NBLCS: | |
9d2b8d50 | 2198 | complain (&unknown_symtype_complaint, local_hex_string (type)); |
4f470205 JK |
2199 | /* FALLTHROUGH */ |
2200 | ||
c55e6167 JG |
2201 | /* The following symbol types don't need the address field relocated, |
2202 | since it is either unused, or is absolute. */ | |
2af231b8 | 2203 | define_a_symbol: |
c55e6167 JG |
2204 | case N_GSYM: /* Global variable */ |
2205 | case N_NSYMS: /* Number of symbols (ultrix) */ | |
2206 | case N_NOMAP: /* No map? (ultrix) */ | |
2207 | case N_RSYM: /* Register variable */ | |
2208 | case N_DEFD: /* Modula-2 GNU module dependency */ | |
2209 | case N_SSYM: /* Struct or union element */ | |
2210 | case N_LSYM: /* Local symbol in stack */ | |
2211 | case N_PSYM: /* Parameter variable */ | |
2212 | case N_LENG: /* Length of preceding symbol type */ | |
2213 | if (name) | |
4f470205 | 2214 | { |
b8ec9a79 JK |
2215 | int deftype; |
2216 | char *colon_pos = strchr (name, ':'); | |
2217 | if (colon_pos == NULL) | |
2218 | deftype = '\0'; | |
2219 | else | |
2220 | deftype = colon_pos[1]; | |
2221 | ||
2222 | switch (deftype) | |
4f470205 | 2223 | { |
b8ec9a79 JK |
2224 | case 'f': |
2225 | case 'F': | |
2226 | function_stab_type = type; | |
2227 | ||
b9e58503 PS |
2228 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
2229 | /* Deal with the SunPRO 3.0 compiler which omits the address | |
2230 | from N_FUN symbols. */ | |
989d9cba JK |
2231 | if (type == N_FUN |
2232 | && valu == ANOFFSET (section_offsets, SECT_OFF_TEXT)) | |
b9e58503 PS |
2233 | { |
2234 | struct minimal_symbol *msym; | |
2235 | char *p; | |
2236 | int n; | |
2237 | ||
2238 | p = strchr (name, ':'); | |
2239 | if (p == NULL) | |
2240 | p = name; | |
2241 | n = p - name; | |
2242 | p = alloca (n + 1); | |
2243 | strncpy (p, name, n); | |
2244 | p[n] = 0; | |
2245 | ||
2246 | msym = lookup_minimal_symbol (p, last_source_file, | |
2247 | objfile); | |
2248 | if (msym) | |
2249 | valu = SYMBOL_VALUE_ADDRESS (msym); | |
2250 | } | |
2251 | #endif | |
2252 | ||
3ef0fc8c | 2253 | #ifdef SUN_FIXED_LBRAC_BUG |
b8ec9a79 JK |
2254 | /* The Sun acc compiler, under SunOS4, puts out |
2255 | functions with N_GSYM or N_STSYM. The problem is | |
2256 | that the address of the symbol is no good (for N_GSYM | |
2257 | it doesn't even attept an address; for N_STSYM it | |
2258 | puts out an address but then it gets relocated | |
2259 | relative to the data segment, not the text segment). | |
2260 | Currently we can't fix this up later as we do for | |
2261 | some types of symbol in scan_file_globals. | |
2262 | Fortunately we do have a way of finding the address - | |
2263 | we know that the value in last_pc_address is either | |
2264 | the one we want (if we're dealing with the first | |
2265 | function in an object file), or somewhere in the | |
2266 | previous function. This means that we can use the | |
2267 | minimal symbol table to get the address. */ | |
2268 | ||
b9e58503 PS |
2269 | /* Starting with release 3.0, the Sun acc compiler, |
2270 | under SunOS4, puts out functions with N_FUN and a value | |
2271 | of zero. This gets relocated to the start of the text | |
2272 | segment of the module, which is no good either. | |
2273 | Under SunOS4 we can deal with this as N_SLINE and N_SO | |
2274 | entries contain valid absolute addresses. | |
2275 | Release 3.0 acc also puts out N_OPT entries, which makes | |
2276 | it possible to discern acc from cc or gcc. */ | |
2277 | ||
2278 | if (type == N_GSYM || type == N_STSYM | |
2279 | || (type == N_FUN | |
2280 | && n_opt_found && !block_address_function_relative)) | |
b8ec9a79 JK |
2281 | { |
2282 | struct minimal_symbol *m; | |
2283 | int l = colon_pos - name; | |
2284 | ||
2285 | m = lookup_minimal_symbol_by_pc (last_pc_address); | |
2b576293 C |
2286 | if (m && STREQN (SYMBOL_NAME (m), name, l) |
2287 | && SYMBOL_NAME (m) [l] == '\0') | |
b8ec9a79 JK |
2288 | /* last_pc_address was in this function */ |
2289 | valu = SYMBOL_VALUE (m); | |
94f5a25f DP |
2290 | else if (m && SYMBOL_NAME (m+1) |
2291 | && STREQN (SYMBOL_NAME (m+1), name, l) | |
2b576293 | 2292 | && SYMBOL_NAME (m+1) [l] == '\0') |
3c7d3064 JK |
2293 | /* last_pc_address was in last function */ |
2294 | valu = SYMBOL_VALUE (m+1); | |
b8ec9a79 | 2295 | else |
3c7d3064 JK |
2296 | /* Not found - use last_pc_address (for finish_block) */ |
2297 | valu = last_pc_address; | |
b8ec9a79 JK |
2298 | } |
2299 | ||
b8ec9a79 JK |
2300 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
2301 | #endif | |
2302 | ||
2303 | if (block_address_function_relative) | |
2304 | /* For Solaris 2.0 compilers, the block addresses and | |
2305 | N_SLINE's are relative to the start of the | |
2306 | function. On normal systems, and when using gcc on | |
2307 | Solaris 2.0, these addresses are just absolute, or | |
2308 | relative to the N_SO, depending on | |
2309 | BLOCK_ADDRESS_ABSOLUTE. */ | |
2310 | function_start_offset = valu; | |
2311 | ||
2312 | within_function = 1; | |
2313 | if (context_stack_depth > 0) | |
2314 | { | |
2315 | new = pop_context (); | |
2316 | /* Make a block for the local symbols within. */ | |
2317 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2318 | new->start_addr, valu, objfile); | |
2319 | } | |
2320 | /* Stack must be empty now. */ | |
2321 | if (context_stack_depth != 0) | |
2322 | complain (&lbrac_unmatched_complaint, symnum); | |
2323 | ||
2324 | new = push_context (0, valu); | |
2325 | new->name = define_symbol (valu, name, desc, type, objfile); | |
2326 | break; | |
2327 | ||
2328 | default: | |
2329 | define_symbol (valu, name, desc, type, objfile); | |
2330 | break; | |
4f470205 JK |
2331 | } |
2332 | } | |
bd5635a1 RP |
2333 | break; |
2334 | ||
ec8ceca3 JG |
2335 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
2336 | for a bunch of other flags, too. Someday we may parse their | |
2337 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
2338 | case N_OPT: /* Solaris 2: Compiler options */ | |
2339 | if (name) | |
2340 | { | |
2e4964ad | 2341 | if (STREQ (name, GCC2_COMPILED_FLAG_SYMBOL)) |
3416d90b | 2342 | { |
1aed6766 | 2343 | processing_gcc_compilation = 2; |
3416d90b | 2344 | #if 1 /* Works, but is experimental. -fnf */ |
1aed6766 | 2345 | if (AUTO_DEMANGLING) |
3416d90b FF |
2346 | { |
2347 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
2348 | } | |
2349 | #endif | |
2350 | } | |
8357834f JK |
2351 | else |
2352 | n_opt_found = 1; | |
ec8ceca3 JG |
2353 | } |
2354 | break; | |
2355 | ||
bcbf9559 JG |
2356 | /* The following symbol types can be ignored. */ |
2357 | case N_OBJ: /* Solaris 2: Object file dir and name */ | |
bcbf9559 JG |
2358 | /* N_UNDF: Solaris 2: file separator mark */ |
2359 | /* N_UNDF: -- we will never encounter it, since we only process one | |
2360 | file's symbols at once. */ | |
4c7c6bab JG |
2361 | case N_ENDM: /* Solaris 2: End of module */ |
2362 | case N_MAIN: /* Name of main routine. */ | |
9342ecb9 | 2363 | break; |
bd5635a1 | 2364 | } |
7e258d18 | 2365 | |
d719efc6 DP |
2366 | /* Special GNU C extension for referencing names. */ |
2367 | if (name[0] == '#') | |
2368 | { | |
2369 | /* Initialize symbol reference names and determine if this is | |
2370 | a definition. If symbol reference is being defined, go | |
2371 | ahead and add it. Otherwise, just return sym. */ | |
2372 | char *s; | |
2373 | int refnum; | |
b303e105 JL |
2374 | extern int symbol_reference_defined PARAMS ((char **)); |
2375 | extern void ref_add PARAMS ((int, struct symbol *, char *, CORE_ADDR)); | |
2376 | extern struct symbol * ref_search PARAMS ((int)); | |
d719efc6 DP |
2377 | |
2378 | /* If defined, store away a pointer to the symbol; | |
2379 | we'll use it later when we resolve references in | |
2380 | "resolve_symbol_reference". */ | |
2381 | s = name; | |
2382 | if (refnum = symbol_reference_defined (&s), refnum) | |
2383 | if (!ref_search (refnum)) | |
2384 | ref_add (refnum, 0, name, valu); | |
2385 | name = s; /* Advance past refid. */ | |
2386 | } | |
2387 | ||
2388 | ||
7e258d18 | 2389 | previous_stab_code = type; |
bd5635a1 RP |
2390 | } |
2391 | \f | |
2b576293 C |
2392 | /* FIXME: The only difference between this and elfstab_build_psymtabs |
2393 | is the call to install_minimal_symbols for elf, and the support for | |
2394 | split sections. If the differences are really that small, the code | |
2395 | should be shared. */ | |
965a5c32 | 2396 | |
b5b186a2 SS |
2397 | /* Scan and build partial symbols for an coff symbol file. |
2398 | The coff file has already been processed to get its minimal symbols. | |
2399 | ||
2400 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2401 | rolled into one. | |
2402 | ||
2403 | OBJFILE is the object file we are reading symbols from. | |
2404 | ADDR is the address relative to which the symbols are (e.g. | |
2405 | the base address of the text segment). | |
2406 | MAINLINE is true if we are reading the main symbol | |
2407 | table (as opposed to a shared lib or dynamically loaded file). | |
2b576293 C |
2408 | TEXTADDR is the address of the text section. |
2409 | TEXTSIZE is the size of the text section. | |
2410 | STABSECTS is the list of .stab sections in OBJFILE. | |
b5b186a2 SS |
2411 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
2412 | .stabstr section exists. | |
2413 | ||
2414 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
2415 | adjusted for coff details. */ | |
2416 | ||
2417 | void | |
2418 | coffstab_build_psymtabs (objfile, section_offsets, mainline, | |
2b576293 | 2419 | textaddr, textsize, stabsects, |
b5b186a2 SS |
2420 | stabstroffset, stabstrsize) |
2421 | struct objfile *objfile; | |
2422 | struct section_offsets *section_offsets; | |
2423 | int mainline; | |
2b576293 C |
2424 | CORE_ADDR textaddr; |
2425 | unsigned int textsize; | |
2426 | struct stab_section_list *stabsects; | |
b5b186a2 SS |
2427 | file_ptr stabstroffset; |
2428 | unsigned int stabstrsize; | |
2429 | { | |
2430 | int val; | |
2431 | bfd *sym_bfd = objfile->obfd; | |
2432 | char *name = bfd_get_filename (sym_bfd); | |
2433 | struct dbx_symfile_info *info; | |
2b576293 | 2434 | unsigned int stabsize; |
b5b186a2 SS |
2435 | |
2436 | /* There is already a dbx_symfile_info allocated by our caller. | |
2437 | It might even contain some info from the coff symtab to help us. */ | |
609fd033 | 2438 | info = objfile->sym_stab_info; |
b5b186a2 | 2439 | |
2b576293 C |
2440 | DBX_TEXT_ADDR (objfile) = textaddr; |
2441 | DBX_TEXT_SIZE (objfile) = textsize; | |
b5b186a2 SS |
2442 | |
2443 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
2444 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; | |
b5b186a2 | 2445 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
b5b186a2 SS |
2446 | |
2447 | if (stabstrsize > bfd_get_size (sym_bfd)) | |
2448 | error ("ridiculous string table size: %d bytes", stabstrsize); | |
2449 | DBX_STRINGTAB (objfile) = (char *) | |
2450 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
94f5a25f | 2451 | OBJSTAT (objfile, sz_strtab += stabstrsize+1); |
b5b186a2 SS |
2452 | |
2453 | /* Now read in the string table in one big gulp. */ | |
2454 | ||
2455 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
2456 | if (val < 0) | |
2457 | perror_with_name (name); | |
2458 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
2459 | if (val != stabstrsize) | |
2460 | perror_with_name (name); | |
2461 | ||
2462 | stabsread_new_init (); | |
2463 | buildsym_new_init (); | |
2464 | free_header_files (); | |
2465 | init_header_files (); | |
2466 | ||
2467 | processing_acc_compilation = 1; | |
2468 | ||
2469 | /* In a coff file, we've already installed the minimal symbols that came | |
2470 | from the coff (non-stab) symbol table, so always act like an | |
2471 | incremental load here. */ | |
2b576293 C |
2472 | if (stabsects->next == NULL) |
2473 | { | |
2474 | stabsize = bfd_section_size (sym_bfd, stabsects->section); | |
2475 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
2476 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
2477 | } | |
2478 | else | |
2479 | { | |
2480 | struct stab_section_list *stabsect; | |
2481 | ||
2482 | DBX_SYMCOUNT (objfile) = 0; | |
2483 | for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next) | |
2484 | { | |
2485 | stabsize = bfd_section_size (sym_bfd, stabsect->section); | |
2486 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); | |
2487 | } | |
2488 | ||
2489 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
2490 | ||
2491 | symbuf_sections = stabsects->next; | |
2492 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section); | |
2493 | symbuf_read = 0; | |
2494 | } | |
2495 | ||
b5b186a2 SS |
2496 | dbx_symfile_read (objfile, section_offsets, 0); |
2497 | } | |
2498 | \f | |
9342ecb9 JG |
2499 | /* Scan and build partial symbols for an ELF symbol file. |
2500 | This ELF file has already been processed to get its minimal symbols, | |
2501 | and any DWARF symbols that were in it. | |
2502 | ||
2503 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2504 | rolled into one. | |
2505 | ||
2506 | OBJFILE is the object file we are reading symbols from. | |
2507 | ADDR is the address relative to which the symbols are (e.g. | |
2508 | the base address of the text segment). | |
2509 | MAINLINE is true if we are reading the main symbol | |
2510 | table (as opposed to a shared lib or dynamically loaded file). | |
2511 | STABOFFSET and STABSIZE define the location in OBJFILE where the .stab | |
2512 | section exists. | |
2513 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
2514 | .stabstr section exists. | |
2515 | ||
2516 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
2517 | adjusted for elf details. */ | |
2518 | ||
2519 | void | |
1aed6766 | 2520 | elfstab_build_psymtabs (objfile, section_offsets, mainline, |
9342ecb9 | 2521 | staboffset, stabsize, |
1aed6766 SG |
2522 | stabstroffset, stabstrsize) |
2523 | struct objfile *objfile; | |
2524 | struct section_offsets *section_offsets; | |
2525 | int mainline; | |
51b80b00 | 2526 | file_ptr staboffset; |
1aed6766 | 2527 | unsigned int stabsize; |
51b80b00 | 2528 | file_ptr stabstroffset; |
1aed6766 | 2529 | unsigned int stabstrsize; |
9342ecb9 JG |
2530 | { |
2531 | int val; | |
2532 | bfd *sym_bfd = objfile->obfd; | |
2533 | char *name = bfd_get_filename (sym_bfd); | |
2534 | struct dbx_symfile_info *info; | |
2b576293 | 2535 | asection *text_sect; |
9342ecb9 | 2536 | |
2af231b8 JG |
2537 | /* There is already a dbx_symfile_info allocated by our caller. |
2538 | It might even contain some info from the ELF symtab to help us. */ | |
609fd033 | 2539 | info = objfile->sym_stab_info; |
9342ecb9 | 2540 | |
2b576293 C |
2541 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
2542 | if (!text_sect) | |
9342ecb9 | 2543 | error ("Can't find .text section in symbol file"); |
2b576293 C |
2544 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
2545 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
9342ecb9 JG |
2546 | |
2547 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
2548 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; | |
2549 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
2550 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; | |
2551 | DBX_SYMTAB_OFFSET (objfile) = staboffset; | |
2552 | ||
996ccb30 | 2553 | if (stabstrsize > bfd_get_size (sym_bfd)) |
9342ecb9 JG |
2554 | error ("ridiculous string table size: %d bytes", stabstrsize); |
2555 | DBX_STRINGTAB (objfile) = (char *) | |
2556 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
94f5a25f | 2557 | OBJSTAT (objfile, sz_strtab += stabstrsize+1); |
9342ecb9 JG |
2558 | |
2559 | /* Now read in the string table in one big gulp. */ | |
2560 | ||
2c7ab4ca | 2561 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); |
9342ecb9 JG |
2562 | if (val < 0) |
2563 | perror_with_name (name); | |
2564 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
2565 | if (val != stabstrsize) | |
2566 | perror_with_name (name); | |
2567 | ||
3416d90b | 2568 | stabsread_new_init (); |
9342ecb9 JG |
2569 | buildsym_new_init (); |
2570 | free_header_files (); | |
2571 | init_header_files (); | |
2572 | install_minimal_symbols (objfile); | |
2573 | ||
2574 | processing_acc_compilation = 1; | |
2575 | ||
2576 | /* In an elf file, we've already installed the minimal symbols that came | |
2577 | from the elf (non-stab) symbol table, so always act like an | |
2578 | incremental load here. */ | |
2af231b8 JG |
2579 | dbx_symfile_read (objfile, section_offsets, 0); |
2580 | } | |
2581 | \f | |
a66e8382 SG |
2582 | /* Scan and build partial symbols for a file with special sections for stabs |
2583 | and stabstrings. The file has already been processed to get its minimal | |
2584 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
2585 | ||
2586 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2587 | rolled into one. | |
2588 | ||
2589 | OBJFILE is the object file we are reading symbols from. | |
2590 | ADDR is the address relative to which the symbols are (e.g. the base address | |
2591 | of the text segment). | |
2592 | MAINLINE is true if we are reading the main symbol table (as opposed to a | |
2593 | shared lib or dynamically loaded file). | |
2594 | STAB_NAME is the name of the section that contains the stabs. | |
2595 | STABSTR_NAME is the name of the section that contains the stab strings. | |
2596 | ||
2597 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read. */ | |
2598 | ||
2599 | void | |
2600 | stabsect_build_psymtabs (objfile, section_offsets, mainline, stab_name, | |
320f93f7 | 2601 | stabstr_name, text_name) |
a66e8382 SG |
2602 | struct objfile *objfile; |
2603 | struct section_offsets *section_offsets; | |
2604 | int mainline; | |
2605 | char *stab_name; | |
2606 | char *stabstr_name; | |
320f93f7 | 2607 | char *text_name; |
a66e8382 SG |
2608 | { |
2609 | int val; | |
2610 | bfd *sym_bfd = objfile->obfd; | |
2611 | char *name = bfd_get_filename (sym_bfd); | |
2612 | asection *stabsect; | |
2613 | asection *stabstrsect; | |
2b576293 | 2614 | asection *text_sect; |
a66e8382 SG |
2615 | |
2616 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
2617 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
2618 | ||
2619 | if (!stabsect) | |
2620 | return; | |
2621 | ||
2622 | if (!stabstrsect) | |
2623 | error ("stabsect_build_psymtabs: Found stabs (%s), but not string section (%s)", | |
2624 | stab_name, stabstr_name); | |
2625 | ||
bfe2f12b | 2626 | objfile->sym_stab_info = (PTR) xmalloc (sizeof (struct dbx_symfile_info)); |
609fd033 | 2627 | memset (objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); |
a66e8382 | 2628 | |
2b576293 C |
2629 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); |
2630 | if (!text_sect) | |
320f93f7 | 2631 | error ("Can't find %s section in symbol file", text_name); |
2b576293 C |
2632 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
2633 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
a66e8382 SG |
2634 | |
2635 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); | |
2636 | DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect) | |
2637 | / DBX_SYMBOL_SIZE (objfile); | |
2638 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect); | |
2639 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING INSIDE BFD DATA STRUCTURES */ | |
2640 | ||
2641 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
2642 | error ("ridiculous string table size: %d bytes", DBX_STRINGTAB_SIZE (objfile)); | |
2643 | DBX_STRINGTAB (objfile) = (char *) | |
2644 | obstack_alloc (&objfile->psymbol_obstack, DBX_STRINGTAB_SIZE (objfile) + 1); | |
94f5a25f | 2645 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); |
a66e8382 SG |
2646 | |
2647 | /* Now read in the string table in one big gulp. */ | |
2648 | ||
2649 | val = bfd_get_section_contents (sym_bfd, /* bfd */ | |
2650 | stabstrsect, /* bfd section */ | |
2651 | DBX_STRINGTAB (objfile), /* input buffer */ | |
2652 | 0, /* offset into section */ | |
2653 | DBX_STRINGTAB_SIZE (objfile)); /* amount to read */ | |
2654 | ||
2655 | if (!val) | |
2656 | perror_with_name (name); | |
2657 | ||
2658 | stabsread_new_init (); | |
2659 | buildsym_new_init (); | |
2660 | free_header_files (); | |
2661 | init_header_files (); | |
2662 | install_minimal_symbols (objfile); | |
2663 | ||
2664 | /* Now, do an incremental load */ | |
2665 | ||
2666 | processing_acc_compilation = 1; | |
2667 | dbx_symfile_read (objfile, section_offsets, 0); | |
2668 | } | |
2669 | \f | |
80d68b1d FF |
2670 | static struct sym_fns aout_sym_fns = |
2671 | { | |
0eed42de | 2672 | bfd_target_aout_flavour, |
80d68b1d FF |
2673 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2674 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2675 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2676 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
e74acce4 MA |
2677 | default_symfile_offsets, |
2678 | /* sym_offsets: parse user's offsets to internal form */ | |
80d68b1d FF |
2679 | NULL /* next: pointer to next struct sym_fns */ |
2680 | }; | |
bd5635a1 RP |
2681 | |
2682 | void | |
2683 | _initialize_dbxread () | |
2684 | { | |
bd5635a1 | 2685 | add_symtab_fns(&aout_sym_fns); |
bd5635a1 | 2686 | } |