Commit | Line | Data |
---|---|---|
bd5635a1 | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
94f5a25f | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996 |
65ce5df4 | 3 | Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
c3a21801 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
c3a21801 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
c3a21801 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
c3a21801 | 18 | along with this program; if not, write to the Free Software |
45886199 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
9404978d MT |
20 | |
21 | /* This module provides three functions: dbx_symfile_init, | |
22 | which initializes to read a symbol file; dbx_new_init, which | |
23 | discards existing cached information when all symbols are being | |
24 | discarded; and dbx_symfile_read, which reads a symbol table | |
25 | from a file. | |
26 | ||
27 | dbx_symfile_read only does the minimum work necessary for letting the | |
28 | user "name" things symbolically; it does not read the entire symtab. | |
29 | Instead, it reads the external and static symbols and puts them in partial | |
30 | symbol tables. When more extensive information is requested of a | |
31 | file, the corresponding partial symbol table is mutated into a full | |
32 | fledged symbol table by going back and reading the symbols | |
33 | for real. dbx_psymtab_to_symtab() is the function that does this */ | |
bd5635a1 | 34 | |
bd5635a1 | 35 | #include "defs.h" |
2b576293 | 36 | #include "gdb_string.h" |
bd5635a1 | 37 | |
9342ecb9 | 38 | #if defined(USG) || defined(__CYGNUSCLIB__) |
bd5635a1 RP |
39 | #include <sys/types.h> |
40 | #include <fcntl.h> | |
bd5635a1 RP |
41 | #endif |
42 | ||
f309ad95 | 43 | #include "obstack.h" |
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 |
899c4021 MA |
65 | /* This macro returns the size field of a minimal symbol, which is normally |
66 | stored in the "info" field. The macro can be overridden for specific | |
67 | targets (e.g. MIPS16) that use the info field for other purposes. */ | |
68 | #ifndef MSYMBOL_SIZE | |
69 | #define MSYMBOL_SIZE(msym) ((long) MSYMBOL_INFO (msym)) | |
70 | #endif | |
71 | ||
72 | ||
2b576293 C |
73 | /* We put a pointer to this structure in the read_symtab_private field |
74 | of the psymtab. */ | |
4a35d6e9 | 75 | |
989d9cba | 76 | struct symloc { |
4a35d6e9 | 77 | |
989d9cba JK |
78 | /* Offset within the file symbol table of first local symbol for this |
79 | file. */ | |
4a35d6e9 | 80 | |
4a35d6e9 | 81 | int ldsymoff; |
989d9cba JK |
82 | |
83 | /* Length (in bytes) of the section of the symbol table devoted to | |
84 | this file's symbols (actually, the section bracketed may contain | |
85 | more than just this file's symbols). If ldsymlen is 0, the only | |
86 | reason for this thing's existence is the dependency list. Nothing | |
87 | else will happen when it is read in. */ | |
88 | ||
4a35d6e9 | 89 | int ldsymlen; |
989d9cba JK |
90 | |
91 | /* The size of each symbol in the symbol file (in external form). */ | |
92 | ||
9342ecb9 | 93 | int symbol_size; |
989d9cba JK |
94 | |
95 | /* Further information needed to locate the symbols if they are in | |
96 | an ELF file. */ | |
97 | ||
9342ecb9 JG |
98 | int symbol_offset; |
99 | int string_offset; | |
100 | int file_string_offset; | |
4a35d6e9 FF |
101 | }; |
102 | ||
989d9cba JK |
103 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) |
104 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
105 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) | |
106 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
107 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
108 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
109 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
110 | ||
111 | \f | |
bd5635a1 RP |
112 | /* Macro to determine which symbols to ignore when reading the first symbol |
113 | of a file. Some machines override this definition. */ | |
114 | #ifndef IGNORE_SYMBOL | |
115 | /* This code is used on Ultrix systems. Ignore it */ | |
116 | #define IGNORE_SYMBOL(type) (type == (int)N_NSYMS) | |
117 | #endif | |
118 | ||
2e4964ad FF |
119 | /* Remember what we deduced to be the source language of this psymtab. */ |
120 | ||
121 | static enum language psymtab_language = language_unknown; | |
122 | ||
bd5635a1 RP |
123 | /* Nonzero means give verbose info on gdb action. From main.c. */ |
124 | extern int info_verbose; | |
125 | ||
7d9884b9 | 126 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
bd5635a1 | 127 | |
c0302457 | 128 | static bfd *symfile_bfd; |
bd5635a1 | 129 | |
afe4ca15 JG |
130 | /* The size of each symbol in the symbol file (in external form). |
131 | This is set by dbx_symfile_read when building psymtabs, and by | |
132 | dbx_psymtab_to_symtab when building symtabs. */ | |
133 | ||
134 | static unsigned symbol_size; | |
135 | ||
9342ecb9 JG |
136 | /* This is the offset of the symbol table in the executable file */ |
137 | static unsigned symbol_table_offset; | |
138 | ||
139 | /* This is the offset of the string table in the executable file */ | |
140 | static unsigned string_table_offset; | |
141 | ||
142 | /* For elf+stab executables, the n_strx field is not a simple index | |
143 | into the string table. Instead, each .o file has a base offset | |
144 | in the string table, and the associated symbols contain offsets | |
145 | from this base. The following two variables contain the base | |
146 | offset for the current and next .o files. */ | |
147 | static unsigned int file_string_table_offset; | |
148 | static unsigned int next_file_string_table_offset; | |
a66e8382 SG |
149 | |
150 | /* .o and NLM files contain unrelocated addresses which are based at 0. When | |
151 | non-zero, this flag disables some of the special cases for Solaris elf+stab | |
152 | text addresses at location 0. */ | |
153 | ||
154 | static int symfile_relocatable = 0; | |
bfe2f12b JL |
155 | |
156 | /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are relative | |
157 | to the function start address. */ | |
158 | ||
159 | static int block_address_function_relative = 0; | |
9d2b8d50 | 160 | \f |
ab52cc44 JK |
161 | /* The lowest text address we have yet encountered. This is needed |
162 | because in an a.out file, there is no header field which tells us | |
163 | what address the program is actually going to be loaded at, so we | |
164 | need to make guesses based on the symbols (which *are* relocated to | |
165 | reflect the address it will be loaded at). */ | |
9d2b8d50 | 166 | static CORE_ADDR lowest_text_address; |
9342ecb9 | 167 | |
bd5635a1 RP |
168 | /* Complaints about the symbols we have encountered. */ |
169 | ||
bd5635a1 RP |
170 | struct complaint lbrac_complaint = |
171 | {"bad block start address patched", 0, 0}; | |
172 | ||
bd5635a1 RP |
173 | struct complaint string_table_offset_complaint = |
174 | {"bad string table offset in symbol %d", 0, 0}; | |
175 | ||
176 | struct complaint unknown_symtype_complaint = | |
0c4d2cc2 | 177 | {"unknown symbol type %s", 0, 0}; |
bd5635a1 | 178 | |
65ce5df4 | 179 | struct complaint unknown_symchar_complaint = |
b30c81b6 | 180 | {"unknown symbol descriptor `%c'", 0, 0}; |
65ce5df4 | 181 | |
bd5635a1 RP |
182 | struct complaint lbrac_rbrac_complaint = |
183 | {"block start larger than block end", 0, 0}; | |
7d9884b9 JG |
184 | |
185 | struct complaint lbrac_unmatched_complaint = | |
186 | {"unmatched N_LBRAC before symtab pos %d", 0, 0}; | |
187 | ||
188 | struct complaint lbrac_mismatch_complaint = | |
189 | {"N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", 0, 0}; | |
9342ecb9 JG |
190 | |
191 | struct complaint repeated_header_complaint = | |
26a859ec | 192 | {"\"repeated\" header file %s not previously seen, at symtab pos %d", 0, 0}; |
d719efc6 DP |
193 | |
194 | struct complaint unclaimed_bincl_complaint = | |
195 | {"N_BINCL %s not in entries for any file, at symtab pos %d", 0, 0}; | |
bd5635a1 | 196 | \f |
bd5635a1 RP |
197 | /* During initial symbol readin, we need to have a structure to keep |
198 | track of which psymtabs have which bincls in them. This structure | |
199 | is used during readin to setup the list of dependencies within each | |
200 | partial symbol table. */ | |
201 | ||
202 | struct header_file_location | |
203 | { | |
204 | char *name; /* Name of header file */ | |
205 | int instance; /* See above */ | |
206 | struct partial_symtab *pst; /* Partial symtab that has the | |
207 | BINCL/EINCL defs for this file */ | |
208 | }; | |
209 | ||
210 | /* The actual list and controling variables */ | |
211 | static struct header_file_location *bincl_list, *next_bincl; | |
212 | static int bincls_allocated; | |
213 | ||
021959e2 JG |
214 | /* Local function prototypes */ |
215 | ||
b607efe7 FF |
216 | static void |
217 | process_now PARAMS ((struct objfile *)); | |
218 | ||
021959e2 | 219 | static void |
80d68b1d FF |
220 | free_header_files PARAMS ((void)); |
221 | ||
222 | static void | |
223 | init_header_files PARAMS ((void)); | |
021959e2 | 224 | |
574dac8e JK |
225 | static void |
226 | read_ofile_symtab PARAMS ((struct partial_symtab *)); | |
021959e2 JG |
227 | |
228 | static void | |
229 | dbx_psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
230 | ||
231 | static void | |
4c07f28d | 232 | dbx_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *)); |
021959e2 | 233 | |
5801f348 JK |
234 | static void |
235 | read_dbx_dynamic_symtab PARAMS ((struct section_offsets *, | |
236 | struct objfile *objfile)); | |
237 | ||
021959e2 | 238 | static void |
2af231b8 JG |
239 | read_dbx_symtab PARAMS ((struct section_offsets *, struct objfile *, |
240 | CORE_ADDR, int)); | |
021959e2 JG |
241 | |
242 | static void | |
243 | free_bincl_list PARAMS ((struct objfile *)); | |
244 | ||
245 | static struct partial_symtab * | |
246 | find_corresponding_bincl_psymtab PARAMS ((char *, int)); | |
247 | ||
248 | static void | |
249 | add_bincl_to_list PARAMS ((struct partial_symtab *, char *, int)); | |
250 | ||
251 | static void | |
252 | init_bincl_list PARAMS ((int, struct objfile *)); | |
253 | ||
021959e2 | 254 | static char * |
94f5a25f | 255 | dbx_next_symbol_text PARAMS ((struct objfile *)); |
021959e2 JG |
256 | |
257 | static void | |
258 | fill_symbuf PARAMS ((bfd *)); | |
259 | ||
260 | static void | |
80d68b1d FF |
261 | dbx_symfile_init PARAMS ((struct objfile *)); |
262 | ||
263 | static void | |
264 | dbx_new_init PARAMS ((struct objfile *)); | |
021959e2 JG |
265 | |
266 | static void | |
2af231b8 | 267 | dbx_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); |
021959e2 JG |
268 | |
269 | static void | |
80d68b1d | 270 | dbx_symfile_finish PARAMS ((struct objfile *)); |
021959e2 JG |
271 | |
272 | static void | |
273 | record_minimal_symbol PARAMS ((char *, CORE_ADDR, int, struct objfile *)); | |
274 | ||
275 | static void | |
276 | add_new_header_file PARAMS ((char *, int)); | |
277 | ||
278 | static void | |
279 | add_old_header_file PARAMS ((char *, int)); | |
280 | ||
281 | static void | |
282 | add_this_object_header_file PARAMS ((int)); | |
283 | ||
80d68b1d | 284 | /* Free up old header file tables */ |
bd5635a1 | 285 | |
021959e2 | 286 | static void |
80d68b1d | 287 | free_header_files () |
bd5635a1 | 288 | { |
80d68b1d FF |
289 | if (this_object_header_files) |
290 | { | |
ac88ca20 | 291 | free ((PTR)this_object_header_files); |
80d68b1d FF |
292 | this_object_header_files = NULL; |
293 | } | |
80d68b1d FF |
294 | n_allocated_this_object_header_files = 0; |
295 | } | |
296 | ||
297 | /* Allocate new header file tables */ | |
298 | ||
299 | static void | |
300 | init_header_files () | |
301 | { | |
bd5635a1 RP |
302 | n_allocated_this_object_header_files = 10; |
303 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); | |
304 | } | |
305 | ||
bd5635a1 RP |
306 | /* Add header file number I for this object file |
307 | at the next successive FILENUM. */ | |
308 | ||
309 | static void | |
310 | add_this_object_header_file (i) | |
311 | int i; | |
312 | { | |
313 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
314 | { | |
315 | n_allocated_this_object_header_files *= 2; | |
316 | this_object_header_files | |
021959e2 | 317 | = (int *) xrealloc ((char *) this_object_header_files, |
bd5635a1 RP |
318 | n_allocated_this_object_header_files * sizeof (int)); |
319 | } | |
320 | ||
321 | this_object_header_files[n_this_object_header_files++] = i; | |
322 | } | |
323 | ||
324 | /* Add to this file an "old" header file, one already seen in | |
325 | a previous object file. NAME is the header file's name. | |
326 | INSTANCE is its instance code, to select among multiple | |
327 | symbol tables for the same header file. */ | |
328 | ||
329 | static void | |
330 | add_old_header_file (name, instance) | |
331 | char *name; | |
332 | int instance; | |
333 | { | |
7f8da359 | 334 | register struct header_file *p = HEADER_FILES (current_objfile); |
bd5635a1 RP |
335 | register int i; |
336 | ||
7f8da359 | 337 | for (i = 0; i < N_HEADER_FILES (current_objfile); i++) |
2e4964ad | 338 | if (STREQ (p[i].name, name) && instance == p[i].instance) |
bd5635a1 RP |
339 | { |
340 | add_this_object_header_file (i); | |
341 | return; | |
342 | } | |
26a859ec | 343 | complain (&repeated_header_complaint, name, symnum); |
bd5635a1 RP |
344 | } |
345 | ||
346 | /* Add to this file a "new" header file: definitions for its types follow. | |
347 | NAME is the header file's name. | |
348 | Most often this happens only once for each distinct header file, | |
349 | but not necessarily. If it happens more than once, INSTANCE has | |
350 | a different value each time, and references to the header file | |
351 | use INSTANCE values to select among them. | |
352 | ||
353 | dbx output contains "begin" and "end" markers for each new header file, | |
354 | but at this level we just need to know which files there have been; | |
355 | so we record the file when its "begin" is seen and ignore the "end". */ | |
356 | ||
357 | static void | |
358 | add_new_header_file (name, instance) | |
359 | char *name; | |
360 | int instance; | |
361 | { | |
362 | register int i; | |
7f8da359 | 363 | register struct header_file *hfile; |
bd5635a1 RP |
364 | |
365 | /* Make sure there is room for one more header file. */ | |
366 | ||
7f8da359 PB |
367 | i = N_ALLOCATED_HEADER_FILES (current_objfile); |
368 | ||
369 | if (N_HEADER_FILES (current_objfile) == i) | |
bd5635a1 | 370 | { |
7f8da359 PB |
371 | if (i == 0) |
372 | { | |
373 | N_ALLOCATED_HEADER_FILES (current_objfile) = 10; | |
374 | HEADER_FILES (current_objfile) = (struct header_file *) | |
375 | xmalloc (10 * sizeof (struct header_file)); | |
376 | } | |
377 | else | |
378 | { | |
379 | i *= 2; | |
380 | N_ALLOCATED_HEADER_FILES (current_objfile) = i; | |
381 | HEADER_FILES (current_objfile) = (struct header_file *) | |
382 | xrealloc ((char *) HEADER_FILES (current_objfile), | |
383 | (i * sizeof (struct header_file))); | |
384 | } | |
bd5635a1 RP |
385 | } |
386 | ||
387 | /* Create an entry for this header file. */ | |
388 | ||
7f8da359 PB |
389 | i = N_HEADER_FILES (current_objfile)++; |
390 | hfile = HEADER_FILES (current_objfile) + i; | |
391 | hfile->name = savestring (name, strlen(name)); | |
392 | hfile->instance = instance; | |
393 | hfile->length = 10; | |
394 | hfile->vector | |
bd5635a1 | 395 | = (struct type **) xmalloc (10 * sizeof (struct type *)); |
7f8da359 | 396 | memset (hfile->vector, 0, 10 * sizeof (struct type *)); |
bd5635a1 RP |
397 | |
398 | add_this_object_header_file (i); | |
399 | } | |
400 | ||
bd5635a1 RP |
401 | #if 0 |
402 | static struct type ** | |
403 | explicit_lookup_type (real_filenum, index) | |
404 | int real_filenum, index; | |
405 | { | |
7f8da359 | 406 | register struct header_file *f = &HEADER_FILES (current_objfile)[real_filenum]; |
bd5635a1 RP |
407 | |
408 | if (index >= f->length) | |
409 | { | |
410 | f->length *= 2; | |
411 | f->vector = (struct type **) | |
412 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
4ed97c9a RP |
413 | memset (&f->vector[f->length / 2], |
414 | '\0', f->length * sizeof (struct type *) / 2); | |
bd5635a1 RP |
415 | } |
416 | return &f->vector[index]; | |
417 | } | |
418 | #endif | |
419 | \f | |
9bba3334 | 420 | static void |
021959e2 | 421 | record_minimal_symbol (name, address, type, objfile) |
bd5635a1 RP |
422 | char *name; |
423 | CORE_ADDR address; | |
424 | int type; | |
021959e2 | 425 | struct objfile *objfile; |
bd5635a1 | 426 | { |
021959e2 | 427 | enum minimal_symbol_type ms_type; |
a66e8382 | 428 | int section; |
609fd033 | 429 | asection *bfd_section; |
0c4d2cc2 | 430 | |
b8ec9a79 JK |
431 | switch (type) |
432 | { | |
a66e8382 SG |
433 | case N_TEXT | N_EXT: |
434 | ms_type = mst_text; | |
435 | section = SECT_OFF_TEXT; | |
609fd033 | 436 | bfd_section = DBX_TEXT_SECTION (objfile); |
a66e8382 SG |
437 | break; |
438 | case N_DATA | N_EXT: | |
439 | ms_type = mst_data; | |
440 | section = SECT_OFF_DATA; | |
609fd033 | 441 | bfd_section = DBX_DATA_SECTION (objfile); |
a66e8382 SG |
442 | break; |
443 | case N_BSS | N_EXT: | |
444 | ms_type = mst_bss; | |
445 | section = SECT_OFF_BSS; | |
609fd033 | 446 | bfd_section = DBX_BSS_SECTION (objfile); |
a66e8382 SG |
447 | break; |
448 | case N_ABS | N_EXT: | |
449 | ms_type = mst_abs; | |
450 | section = -1; | |
609fd033 | 451 | bfd_section = NULL; |
a66e8382 | 452 | break; |
0c4d2cc2 | 453 | #ifdef N_SETV |
a66e8382 SG |
454 | case N_SETV | N_EXT: |
455 | ms_type = mst_data; | |
456 | section = SECT_OFF_DATA; | |
609fd033 | 457 | bfd_section = DBX_DATA_SECTION (objfile); |
a66e8382 | 458 | break; |
b8ec9a79 JK |
459 | case N_SETV: |
460 | /* I don't think this type actually exists; since a N_SETV is the result | |
461 | of going over many .o files, it doesn't make sense to have one | |
462 | file local. */ | |
463 | ms_type = mst_file_data; | |
a66e8382 | 464 | section = SECT_OFF_DATA; |
609fd033 | 465 | bfd_section = DBX_DATA_SECTION (objfile); |
b8ec9a79 | 466 | break; |
0c4d2cc2 | 467 | #endif |
05c81f45 | 468 | case N_TEXT: |
b8ec9a79 JK |
469 | case N_NBTEXT: |
470 | case N_FN: | |
471 | case N_FN_SEQ: | |
b8ec9a79 | 472 | ms_type = mst_file_text; |
a66e8382 | 473 | section = SECT_OFF_TEXT; |
609fd033 | 474 | bfd_section = DBX_TEXT_SECTION (objfile); |
b8ec9a79 | 475 | break; |
b8ec9a79 JK |
476 | case N_DATA: |
477 | ms_type = mst_file_data; | |
478 | ||
479 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
480 | Record it as global even if it's local, not global, so | |
05c81f45 SEF |
481 | lookup_minimal_symbol can find it. We don't check symbol_leading_char |
482 | because for SunOS4 it always is '_'. */ | |
b8ec9a79 JK |
483 | if (name[8] == 'C' && STREQ ("__DYNAMIC", name)) |
484 | ms_type = mst_data; | |
485 | ||
486 | /* Same with virtual function tables, both global and static. */ | |
487 | { | |
488 | char *tempstring = name; | |
489 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) | |
490 | ++tempstring; | |
491 | if (VTBL_PREFIX_P ((tempstring))) | |
492 | ms_type = mst_data; | |
493 | } | |
a66e8382 | 494 | section = SECT_OFF_DATA; |
609fd033 | 495 | bfd_section = DBX_DATA_SECTION (objfile); |
b8ec9a79 | 496 | break; |
b8ec9a79 JK |
497 | case N_BSS: |
498 | ms_type = mst_file_bss; | |
a66e8382 | 499 | section = SECT_OFF_BSS; |
609fd033 | 500 | bfd_section = DBX_BSS_SECTION (objfile); |
a66e8382 SG |
501 | break; |
502 | default: | |
503 | ms_type = mst_unknown; | |
504 | section = -1; | |
609fd033 | 505 | bfd_section = NULL; |
b8ec9a79 | 506 | break; |
0c4d2cc2 | 507 | } |
bd5635a1 | 508 | |
bfe2f12b | 509 | if ((ms_type == mst_file_text || ms_type == mst_text) |
9d2b8d50 JK |
510 | && address < lowest_text_address) |
511 | lowest_text_address = address; | |
512 | ||
a66e8382 | 513 | prim_record_minimal_symbol_and_info |
609fd033 | 514 | (name, address, ms_type, NULL, section, bfd_section, objfile); |
bd5635a1 RP |
515 | } |
516 | \f | |
517 | /* Scan and build partial symbols for a symbol file. | |
518 | We have been initialized by a call to dbx_symfile_init, which | |
3624c875 FF |
519 | put all the relevant info into a "struct dbx_symfile_info", |
520 | hung off the objfile structure. | |
bd5635a1 | 521 | |
2af231b8 JG |
522 | SECTION_OFFSETS contains offsets relative to which the symbols in the |
523 | various sections are (depending where the sections were actually loaded). | |
bd5635a1 RP |
524 | MAINLINE is true if we are reading the main symbol |
525 | table (as opposed to a shared lib or dynamically loaded file). */ | |
526 | ||
9bba3334 | 527 | static void |
2af231b8 | 528 | dbx_symfile_read (objfile, section_offsets, mainline) |
80d68b1d | 529 | struct objfile *objfile; |
2af231b8 | 530 | struct section_offsets *section_offsets; |
bd5635a1 RP |
531 | int mainline; /* FIXME comments above */ |
532 | { | |
80d68b1d | 533 | bfd *sym_bfd; |
bd5635a1 | 534 | int val; |
0eb22669 | 535 | struct cleanup *back_to; |
bd5635a1 | 536 | |
a66e8382 SG |
537 | val = strlen (objfile->name); |
538 | ||
7f8da359 PB |
539 | sym_bfd = objfile->obfd; |
540 | ||
a66e8382 SG |
541 | /* .o and .nlm files are relocatables with text, data and bss segs based at |
542 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for | |
7f8da359 | 543 | symbols with a value of 0. */ |
a66e8382 | 544 | |
7f8da359 | 545 | symfile_relocatable = bfd_get_file_flags (sym_bfd) & HAS_RELOC; |
a66e8382 | 546 | |
bfe2f12b JL |
547 | /* This is true for Solaris (and all other systems which put stabs |
548 | in sections, hopefully, since it would be silly to do things | |
549 | differently from Solaris), and false for SunOS4 and other a.out | |
550 | file formats. */ | |
551 | block_address_function_relative = | |
7f8da359 PB |
552 | ((0 == strncmp (bfd_get_target (sym_bfd), "elf", 3)) |
553 | || (0 == strncmp (bfd_get_target (sym_bfd), "som", 3)) | |
554 | || (0 == strncmp (bfd_get_target (sym_bfd), "coff", 4)) | |
555 | || (0 == strncmp (bfd_get_target (sym_bfd), "pe", 2)) | |
556 | || (0 == strncmp (bfd_get_target (sym_bfd), "nlm", 3))); | |
bfe2f12b | 557 | |
7f8da359 | 558 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); |
bd5635a1 | 559 | if (val < 0) |
80d68b1d | 560 | perror_with_name (objfile->name); |
bd5635a1 | 561 | |
66eeea27 | 562 | /* If we are reinitializing, or if we have never loaded syms yet, init */ |
a367db89 JK |
563 | if (mainline |
564 | || objfile->global_psymbols.size == 0 | |
565 | || objfile->static_psymbols.size == 0) | |
566 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); | |
66eeea27 | 567 | |
9342ecb9 JG |
568 | symbol_size = DBX_SYMBOL_SIZE (objfile); |
569 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
afe4ca15 | 570 | |
a7f56d5a | 571 | free_pending_blocks (); |
0eb22669 | 572 | back_to = make_cleanup (really_free_pendings, 0); |
bd5635a1 | 573 | |
021959e2 JG |
574 | init_minimal_symbol_collection (); |
575 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
576 | |
577 | /* Now that the symbol table data of the executable file are all in core, | |
578 | process them and define symbols accordingly. */ | |
579 | ||
2af231b8 | 580 | read_dbx_symtab (section_offsets, objfile, |
2b576293 C |
581 | DBX_TEXT_ADDR (objfile), |
582 | DBX_TEXT_SIZE (objfile)); | |
bd5635a1 | 583 | |
26a859ec | 584 | /* Add the dynamic symbols. */ |
5801f348 | 585 | |
26a859ec | 586 | read_dbx_dynamic_symtab (section_offsets, objfile); |
5801f348 | 587 | |
021959e2 JG |
588 | /* Install any minimal symbols that have been collected as the current |
589 | minimal symbols for this objfile. */ | |
bd5635a1 | 590 | |
80d68b1d | 591 | install_minimal_symbols (objfile); |
bd5635a1 | 592 | |
0eb22669 | 593 | do_cleanups (back_to); |
bd5635a1 RP |
594 | } |
595 | ||
9404978d MT |
596 | /* Initialize anything that needs initializing when a completely new |
597 | symbol file is specified (not just adding some symbols from another | |
598 | file, e.g. a shared library). */ | |
bd5635a1 | 599 | |
9bba3334 | 600 | static void |
ac88ca20 JG |
601 | dbx_new_init (ignore) |
602 | struct objfile *ignore; | |
bd5635a1 | 603 | { |
3416d90b | 604 | stabsread_new_init (); |
c0302457 | 605 | buildsym_new_init (); |
80d68b1d | 606 | init_header_files (); |
bd5635a1 RP |
607 | } |
608 | ||
609 | ||
610 | /* dbx_symfile_init () | |
611 | is the dbx-specific initialization routine for reading symbols. | |
80d68b1d | 612 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
613 | the BFD for the file whose symbols are being read, and a slot for a pointer |
614 | to "private data" which we fill with goodies. | |
615 | ||
616 | We read the string table into malloc'd space and stash a pointer to it. | |
617 | ||
618 | Since BFD doesn't know how to read debug symbols in a format-independent | |
619 | way (and may never do so...), we have to do it ourselves. We will never | |
620 | be called unless this is an a.out (or very similar) file. | |
621 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
622 | ||
69a272c4 FF |
623 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
624 | ||
9bba3334 | 625 | static void |
80d68b1d FF |
626 | dbx_symfile_init (objfile) |
627 | struct objfile *objfile; | |
bd5635a1 RP |
628 | { |
629 | int val; | |
80d68b1d | 630 | bfd *sym_bfd = objfile->obfd; |
bd5635a1 | 631 | char *name = bfd_get_filename (sym_bfd); |
2b576293 | 632 | asection *text_sect; |
69a272c4 | 633 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; |
bd5635a1 RP |
634 | |
635 | /* Allocate struct to keep track of the symfile */ | |
965a5c32 | 636 | objfile->sym_stab_info = (PTR) |
3624c875 | 637 | xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info)); |
609fd033 FF |
638 | memset ((PTR) objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); |
639 | ||
640 | DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
641 | DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data"); | |
642 | DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss"); | |
bd5635a1 RP |
643 | |
644 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
bd5635a1 RP |
645 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
646 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
040b9597 | 647 | |
bd5635a1 RP |
648 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
649 | ||
784fd92b | 650 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; |
2b576293 C |
651 | |
652 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); | |
653 | if (!text_sect) | |
9342ecb9 | 654 | error ("Can't find .text section in symbol file"); |
2b576293 C |
655 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
656 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
9342ecb9 | 657 | |
bf18ac80 | 658 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); |
7da1e27d | 659 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); |
9342ecb9 | 660 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; |
3624c875 FF |
661 | |
662 | /* Read the string table and stash it away in the psymbol_obstack. It is | |
663 | only needed as long as we need to expand psymbols into full symbols, | |
664 | so when we blow away the psymbol the string table goes away as well. | |
665 | Note that gdb used to use the results of attempting to malloc the | |
666 | string table, based on the size it read, as a form of sanity check | |
667 | for botched byte swapping, on the theory that a byte swapped string | |
668 | table size would be so totally bogus that the malloc would fail. Now | |
669 | that we put in on the psymbol_obstack, we can't do this since gdb gets | |
670 | a fatal error (out of virtual memory) if the size is bogus. We can | |
69a272c4 FF |
671 | however at least check to see if the size is less than the size of |
672 | the size field itself, or larger than the size of the entire file. | |
673 | Note that all valid string tables have a size greater than zero, since | |
674 | the bytes used to hold the size are included in the count. */ | |
3624c875 | 675 | |
69a272c4 FF |
676 | if (STRING_TABLE_OFFSET == 0) |
677 | { | |
65ce5df4 JG |
678 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET |
679 | will never be zero, even when there is no string table. This | |
680 | would appear to be a bug in bfd. */ | |
69a272c4 FF |
681 | DBX_STRINGTAB_SIZE (objfile) = 0; |
682 | DBX_STRINGTAB (objfile) = NULL; | |
683 | } | |
684 | else | |
685 | { | |
2c7ab4ca | 686 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
69a272c4 FF |
687 | if (val < 0) |
688 | perror_with_name (name); | |
689 | ||
690 | memset ((PTR) size_temp, 0, sizeof (size_temp)); | |
691 | val = bfd_read ((PTR) size_temp, sizeof (size_temp), 1, sym_bfd); | |
692 | if (val < 0) | |
65ce5df4 JG |
693 | { |
694 | perror_with_name (name); | |
695 | } | |
696 | else if (val == 0) | |
697 | { | |
698 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
699 | EOF if there is no string table, and attempting to read the size | |
700 | from EOF will read zero bytes. */ | |
701 | DBX_STRINGTAB_SIZE (objfile) = 0; | |
702 | DBX_STRINGTAB (objfile) = NULL; | |
703 | } | |
704 | else | |
705 | { | |
706 | /* Read some data that would appear to be the string table size. | |
707 | If there really is a string table, then it is probably the right | |
708 | size. Byteswap if necessary and validate the size. Note that | |
709 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
710 | random data that happened to be at STRING_TABLE_OFFSET, because | |
711 | bfd can't tell us there is no string table, the sanity checks may | |
712 | or may not catch this. */ | |
713 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); | |
714 | ||
715 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) | |
716 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
717 | error ("ridiculous string table size (%d bytes).", | |
718 | DBX_STRINGTAB_SIZE (objfile)); | |
719 | ||
720 | DBX_STRINGTAB (objfile) = | |
721 | (char *) obstack_alloc (&objfile -> psymbol_obstack, | |
722 | DBX_STRINGTAB_SIZE (objfile)); | |
94f5a25f | 723 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); |
65ce5df4 JG |
724 | |
725 | /* Now read in the string table in one big gulp. */ | |
726 | ||
2c7ab4ca | 727 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
65ce5df4 JG |
728 | if (val < 0) |
729 | perror_with_name (name); | |
730 | val = bfd_read (DBX_STRINGTAB (objfile), DBX_STRINGTAB_SIZE (objfile), 1, | |
731 | sym_bfd); | |
732 | if (val != DBX_STRINGTAB_SIZE (objfile)) | |
733 | perror_with_name (name); | |
734 | } | |
69a272c4 | 735 | } |
bd5635a1 | 736 | } |
80d68b1d FF |
737 | |
738 | /* Perform any local cleanups required when we are done with a particular | |
739 | objfile. I.E, we are in the process of discarding all symbol information | |
740 | for an objfile, freeing up all memory held for it, and unlinking the | |
741 | objfile struct from the global list of known objfiles. */ | |
742 | ||
743 | static void | |
744 | dbx_symfile_finish (objfile) | |
745 | struct objfile *objfile; | |
746 | { | |
965a5c32 | 747 | if (objfile->sym_stab_info != NULL) |
80d68b1d | 748 | { |
7f8da359 PB |
749 | if (HEADER_FILES (objfile) != NULL) |
750 | { | |
751 | register int i = N_HEADER_FILES (objfile); | |
752 | register struct header_file *hfiles = HEADER_FILES (objfile); | |
753 | ||
754 | while (--i >= 0) | |
755 | { | |
756 | free (hfiles [i].name); | |
609fd033 | 757 | free (hfiles [i].vector); |
7f8da359 PB |
758 | } |
759 | free ((PTR) hfiles); | |
760 | } | |
965a5c32 | 761 | mfree (objfile -> md, objfile->sym_stab_info); |
80d68b1d FF |
762 | } |
763 | free_header_files (); | |
764 | } | |
765 | ||
bd5635a1 RP |
766 | \f |
767 | /* Buffer for reading the symbol table entries. */ | |
139e2c0f | 768 | static struct external_nlist symbuf[4096]; |
bd5635a1 RP |
769 | static int symbuf_idx; |
770 | static int symbuf_end; | |
771 | ||
94f5a25f DP |
772 | /* cont_elem is used for continuing information in cfront. |
773 | It saves information about which types need to be fixed up and | |
774 | completed after all the stabs are read. */ | |
775 | struct cont_elem | |
776 | { | |
777 | /* sym and stabsstring for continuing information in cfront */ | |
778 | struct symbol * sym; | |
779 | char * stabs; | |
780 | /* state dependancies (statics that must be preserved) */ | |
781 | int sym_idx; | |
782 | int sym_end; | |
783 | int symnum; | |
b303e105 | 784 | int (*func) PARAMS ((struct objfile *, struct symbol *, char *)); |
94f5a25f DP |
785 | /* other state dependancies include: |
786 | (assumption is that these will not change since process_now FIXME!!) | |
787 | stringtab_global | |
788 | n_stabs | |
789 | objfile | |
790 | symfile_bfd */ | |
791 | }; | |
d719efc6 DP |
792 | |
793 | static struct cont_elem *cont_list = 0; | |
794 | static int cont_limit = 0; | |
94f5a25f DP |
795 | static int cont_count = 0; |
796 | ||
797 | void | |
d719efc6 | 798 | process_later (sym, p, f) |
94f5a25f DP |
799 | struct symbol * sym; |
800 | char * p; | |
b303e105 | 801 | int (*f) PARAMS ((struct objfile *, struct symbol *, char *)); |
94f5a25f | 802 | { |
d719efc6 DP |
803 | if (cont_count >= cont_limit - 1) |
804 | { | |
805 | cont_limit += 32; /* chunk size */ | |
806 | cont_list = (struct cont_elem *) realloc (cont_list, | |
807 | cont_limit * sizeof (struct cont_elem)); | |
808 | if (!cont_list) | |
809 | error ("Virtual memory exhausted\n"); | |
810 | } | |
94f5a25f DP |
811 | /* save state so we can process these stabs later */ |
812 | cont_list[cont_count].sym_idx = symbuf_idx; | |
813 | cont_list[cont_count].sym_end = symbuf_end; | |
814 | cont_list[cont_count].symnum = symnum; | |
815 | cont_list[cont_count].sym = sym; | |
816 | cont_list[cont_count].stabs = p; | |
d719efc6 | 817 | cont_list[cont_count].func = f; |
94f5a25f DP |
818 | cont_count++; |
819 | } | |
820 | ||
b607efe7 | 821 | static void |
d719efc6 | 822 | process_now (objfile) |
94f5a25f DP |
823 | struct objfile * objfile; |
824 | { | |
825 | int i; | |
826 | /* save original state */ | |
827 | int save_symbuf_idx = symbuf_idx; | |
828 | int save_symbuf_end = symbuf_end; | |
829 | int save_symnum = symnum; | |
d719efc6 DP |
830 | struct symbol *sym; |
831 | char *stabs; | |
832 | int err; | |
b303e105 | 833 | int (*func) PARAMS ((struct objfile *, struct symbol *, char *)); |
d719efc6 | 834 | |
94f5a25f DP |
835 | for (i=0; i<cont_count; i++) |
836 | { | |
d719efc6 | 837 | /* Set state as if we were parsing stabs strings |
94f5a25f DP |
838 | for this symbol */ |
839 | symbuf_idx = cont_list[i].sym_idx; /* statics used by gdb */ | |
840 | symbuf_end = cont_list[i].sym_end; | |
841 | symnum = cont_list[i].symnum; | |
d719efc6 DP |
842 | sym = cont_list[i].sym; |
843 | stabs = cont_list[i].stabs; | |
844 | func = cont_list[i].func; | |
845 | ||
846 | err = (*func) (objfile, sym, stabs); | |
847 | if (err) | |
848 | error ("Internal error: unable to resolve stab.\n"); | |
94f5a25f DP |
849 | } |
850 | /* restore original state */ | |
851 | symbuf_idx = save_symbuf_idx; | |
852 | symbuf_end = save_symbuf_end; | |
853 | symnum = save_symnum; | |
854 | cont_count=0; /* reset for next run */ | |
855 | } | |
856 | ||
857 | ||
9342ecb9 JG |
858 | /* Name of last function encountered. Used in Solaris to approximate |
859 | object file boundaries. */ | |
860 | static char *last_function_name; | |
861 | ||
bd5635a1 RP |
862 | /* The address in memory of the string table of the object file we are |
863 | reading (which might not be the "main" object file, but might be a | |
a367db89 JK |
864 | shared library or some other dynamically loaded thing). This is |
865 | set by read_dbx_symtab when building psymtabs, and by | |
866 | read_ofile_symtab when building symtabs, and is used only by | |
867 | next_symbol_text. FIXME: If that is true, we don't need it when | |
868 | building psymtabs, right? */ | |
bd5635a1 RP |
869 | static char *stringtab_global; |
870 | ||
2b576293 C |
871 | /* These variables are used to control fill_symbuf when the stabs |
872 | symbols are not contiguous (as may be the case when a COFF file is | |
873 | linked using --split-by-reloc). */ | |
874 | static struct stab_section_list *symbuf_sections; | |
875 | static unsigned int symbuf_left; | |
876 | static unsigned int symbuf_read; | |
877 | ||
bd5635a1 RP |
878 | /* Refill the symbol table input buffer |
879 | and set the variables that control fetching entries from it. | |
880 | Reports an error if no data available. | |
881 | This function can read past the end of the symbol table | |
882 | (into the string table) but this does no harm. */ | |
883 | ||
7d9884b9 JG |
884 | static void |
885 | fill_symbuf (sym_bfd) | |
886 | bfd *sym_bfd; | |
bd5635a1 | 887 | { |
2b576293 C |
888 | unsigned int count; |
889 | int nbytes; | |
890 | ||
891 | if (symbuf_sections == NULL) | |
892 | count = sizeof (symbuf); | |
893 | else | |
894 | { | |
895 | if (symbuf_left <= 0) | |
896 | { | |
897 | file_ptr filepos = symbuf_sections->section->filepos; | |
898 | if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0) | |
899 | perror_with_name (bfd_get_filename (sym_bfd)); | |
900 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section); | |
901 | symbol_table_offset = filepos - symbuf_read; | |
902 | symbuf_sections = symbuf_sections->next; | |
903 | } | |
904 | ||
905 | count = symbuf_left; | |
906 | if (count > sizeof (symbuf)) | |
907 | count = sizeof (symbuf); | |
908 | } | |
909 | ||
910 | nbytes = bfd_read ((PTR)symbuf, count, 1, sym_bfd); | |
bd5635a1 | 911 | if (nbytes < 0) |
7d9884b9 | 912 | perror_with_name (bfd_get_filename (sym_bfd)); |
bd5635a1 RP |
913 | else if (nbytes == 0) |
914 | error ("Premature end of file reading symbol table"); | |
afe4ca15 | 915 | symbuf_end = nbytes / symbol_size; |
bd5635a1 | 916 | symbuf_idx = 0; |
2b576293 C |
917 | symbuf_left -= nbytes; |
918 | symbuf_read += nbytes; | |
bd5635a1 RP |
919 | } |
920 | ||
7d9884b9 | 921 | #define SWAP_SYMBOL(symp, abfd) \ |
bd5635a1 | 922 | { \ |
7d9884b9 | 923 | (symp)->n_strx = bfd_h_get_32(abfd, \ |
afe4ca15 | 924 | (unsigned char *)&(symp)->n_strx); \ |
7d9884b9 | 925 | (symp)->n_desc = bfd_h_get_16 (abfd, \ |
bd5635a1 | 926 | (unsigned char *)&(symp)->n_desc); \ |
7d9884b9 | 927 | (symp)->n_value = bfd_h_get_32 (abfd, \ |
bd5635a1 RP |
928 | (unsigned char *)&(symp)->n_value); \ |
929 | } | |
930 | ||
139e2c0f SG |
931 | #define INTERNALIZE_SYMBOL(intern, extern, abfd) \ |
932 | { \ | |
933 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \ | |
934 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \ | |
935 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \ | |
936 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \ | |
937 | } | |
938 | ||
bd5635a1 RP |
939 | /* Invariant: The symbol pointed to by symbuf_idx is the first one |
940 | that hasn't been swapped. Swap the symbol at the same time | |
941 | that symbuf_idx is incremented. */ | |
942 | ||
943 | /* dbx allows the text of a symbol name to be continued into the | |
944 | next symbol name! When such a continuation is encountered | |
945 | (a \ at the end of the text of a name) | |
946 | call this function to get the continuation. */ | |
947 | ||
021959e2 | 948 | static char * |
94f5a25f DP |
949 | dbx_next_symbol_text (objfile) |
950 | struct objfile *objfile; | |
bd5635a1 | 951 | { |
139e2c0f SG |
952 | struct internal_nlist nlist; |
953 | ||
bd5635a1 | 954 | if (symbuf_idx == symbuf_end) |
7d9884b9 | 955 | fill_symbuf (symfile_bfd); |
139e2c0f | 956 | |
bd5635a1 | 957 | symnum++; |
139e2c0f | 958 | INTERNALIZE_SYMBOL(nlist, &symbuf[symbuf_idx], symfile_bfd); |
94f5a25f | 959 | OBJSTAT (objfile, n_stabs++); |
139e2c0f SG |
960 | |
961 | symbuf_idx++; | |
962 | ||
963 | return nlist.n_strx + stringtab_global + file_string_table_offset; | |
bd5635a1 RP |
964 | } |
965 | \f | |
bd5635a1 RP |
966 | /* Initialize the list of bincls to contain none and have some |
967 | allocated. */ | |
968 | ||
969 | static void | |
021959e2 | 970 | init_bincl_list (number, objfile) |
bd5635a1 | 971 | int number; |
021959e2 | 972 | struct objfile *objfile; |
bd5635a1 RP |
973 | { |
974 | bincls_allocated = number; | |
975 | next_bincl = bincl_list = (struct header_file_location *) | |
318bf84f | 976 | xmmalloc (objfile -> md, bincls_allocated * sizeof(struct header_file_location)); |
bd5635a1 RP |
977 | } |
978 | ||
979 | /* Add a bincl to the list. */ | |
980 | ||
981 | static void | |
982 | add_bincl_to_list (pst, name, instance) | |
983 | struct partial_symtab *pst; | |
984 | char *name; | |
985 | int instance; | |
986 | { | |
987 | if (next_bincl >= bincl_list + bincls_allocated) | |
988 | { | |
989 | int offset = next_bincl - bincl_list; | |
990 | bincls_allocated *= 2; | |
991 | bincl_list = (struct header_file_location *) | |
318bf84f | 992 | xmrealloc (pst->objfile->md, (char *)bincl_list, |
bd5635a1 RP |
993 | bincls_allocated * sizeof (struct header_file_location)); |
994 | next_bincl = bincl_list + offset; | |
995 | } | |
996 | next_bincl->pst = pst; | |
997 | next_bincl->instance = instance; | |
998 | next_bincl++->name = name; | |
999 | } | |
1000 | ||
1001 | /* Given a name, value pair, find the corresponding | |
1002 | bincl in the list. Return the partial symtab associated | |
1003 | with that header_file_location. */ | |
1004 | ||
9bba3334 | 1005 | static struct partial_symtab * |
bd5635a1 RP |
1006 | find_corresponding_bincl_psymtab (name, instance) |
1007 | char *name; | |
1008 | int instance; | |
1009 | { | |
1010 | struct header_file_location *bincl; | |
1011 | ||
1012 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
1013 | if (bincl->instance == instance | |
2e4964ad | 1014 | && STREQ (name, bincl->name)) |
bd5635a1 RP |
1015 | return bincl->pst; |
1016 | ||
26a859ec | 1017 | complain (&repeated_header_complaint, name, symnum); |
bd5635a1 RP |
1018 | return (struct partial_symtab *) 0; |
1019 | } | |
1020 | ||
1021 | /* Free the storage allocated for the bincl list. */ | |
1022 | ||
1023 | static void | |
021959e2 JG |
1024 | free_bincl_list (objfile) |
1025 | struct objfile *objfile; | |
bd5635a1 | 1026 | { |
ac88ca20 | 1027 | mfree (objfile -> md, (PTR)bincl_list); |
bd5635a1 RP |
1028 | bincls_allocated = 0; |
1029 | } | |
1030 | ||
5801f348 JK |
1031 | /* Scan a SunOs dynamic symbol table for symbols of interest and |
1032 | add them to the minimal symbol table. */ | |
1033 | ||
1034 | static void | |
1035 | read_dbx_dynamic_symtab (section_offsets, objfile) | |
1036 | struct section_offsets *section_offsets; | |
1037 | struct objfile *objfile; | |
1038 | { | |
1039 | bfd *abfd = objfile->obfd; | |
192b64e7 | 1040 | struct cleanup *back_to; |
5801f348 | 1041 | int counter; |
192b64e7 ILT |
1042 | long dynsym_size; |
1043 | long dynsym_count; | |
1044 | asymbol **dynsyms; | |
1045 | asymbol **symptr; | |
1046 | arelent **relptr; | |
1047 | long dynrel_size; | |
1048 | long dynrel_count; | |
1049 | arelent **dynrels; | |
5801f348 | 1050 | CORE_ADDR sym_value; |
f69ecb9c | 1051 | char *name; |
5801f348 JK |
1052 | |
1053 | /* Check that the symbol file has dynamic symbols that we know about. | |
1054 | bfd_arch_unknown can happen if we are reading a sun3 symbol file | |
1055 | on a sun4 host (and vice versa) and bfd is not configured | |
1056 | --with-target=all. This would trigger an assertion in bfd/sunos.c, | |
1057 | so we ignore the dynamic symbols in this case. */ | |
1058 | if (bfd_get_flavour (abfd) != bfd_target_aout_flavour | |
1059 | || (bfd_get_file_flags (abfd) & DYNAMIC) == 0 | |
192b64e7 | 1060 | || bfd_get_arch (abfd) == bfd_arch_unknown) |
5801f348 JK |
1061 | return; |
1062 | ||
192b64e7 ILT |
1063 | dynsym_size = bfd_get_dynamic_symtab_upper_bound (abfd); |
1064 | if (dynsym_size < 0) | |
5801f348 JK |
1065 | return; |
1066 | ||
192b64e7 ILT |
1067 | dynsyms = (asymbol **) xmalloc (dynsym_size); |
1068 | back_to = make_cleanup (free, dynsyms); | |
1069 | ||
1070 | dynsym_count = bfd_canonicalize_dynamic_symtab (abfd, dynsyms); | |
1071 | if (dynsym_count < 0) | |
1072 | { | |
1073 | do_cleanups (back_to); | |
1074 | return; | |
1075 | } | |
1076 | ||
5801f348 JK |
1077 | /* Enter dynamic symbols into the minimal symbol table |
1078 | if this is a stripped executable. */ | |
1079 | if (bfd_get_symcount (abfd) <= 0) | |
1080 | { | |
192b64e7 ILT |
1081 | symptr = dynsyms; |
1082 | for (counter = 0; counter < dynsym_count; counter++, symptr++) | |
5801f348 | 1083 | { |
192b64e7 ILT |
1084 | asymbol *sym = *symptr; |
1085 | asection *sec; | |
1086 | int type; | |
1087 | ||
192b64e7 | 1088 | sec = bfd_get_section (sym); |
be78eb1a PS |
1089 | |
1090 | /* BFD symbols are section relative. */ | |
0683ac4b PS |
1091 | sym_value = sym->value + sec->vma; |
1092 | ||
192b64e7 | 1093 | if (bfd_get_section_flags (abfd, sec) & SEC_CODE) |
5801f348 | 1094 | { |
192b64e7 ILT |
1095 | sym_value += ANOFFSET (section_offsets, SECT_OFF_TEXT); |
1096 | type = N_TEXT; | |
5801f348 | 1097 | } |
192b64e7 ILT |
1098 | else if (bfd_get_section_flags (abfd, sec) & SEC_DATA) |
1099 | { | |
1100 | sym_value += ANOFFSET (section_offsets, SECT_OFF_DATA); | |
1101 | type = N_DATA; | |
1102 | } | |
1103 | else if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) | |
5801f348 | 1104 | { |
192b64e7 ILT |
1105 | sym_value += ANOFFSET (section_offsets, SECT_OFF_BSS); |
1106 | type = N_BSS; | |
5801f348 JK |
1107 | } |
1108 | else | |
192b64e7 ILT |
1109 | continue; |
1110 | ||
1111 | if (sym->flags & BSF_GLOBAL) | |
1112 | type |= N_EXT; | |
1113 | ||
b9e58503 PS |
1114 | record_minimal_symbol ((char *) bfd_asymbol_name (sym), sym_value, |
1115 | type, objfile); | |
5801f348 JK |
1116 | } |
1117 | } | |
1118 | ||
1119 | /* Symbols from shared libraries have a dynamic relocation entry | |
1120 | that points to the associated slot in the procedure linkage table. | |
1121 | We make a mininal symbol table entry with type mst_solib_trampoline | |
1122 | at the address in the procedure linkage table. */ | |
192b64e7 ILT |
1123 | dynrel_size = bfd_get_dynamic_reloc_upper_bound (abfd); |
1124 | if (dynrel_size < 0) | |
1125 | { | |
1126 | do_cleanups (back_to); | |
1127 | return; | |
1128 | } | |
1129 | ||
1130 | dynrels = (arelent **) xmalloc (dynrel_size); | |
1131 | make_cleanup (free, dynrels); | |
5801f348 | 1132 | |
192b64e7 ILT |
1133 | dynrel_count = bfd_canonicalize_dynamic_reloc (abfd, dynrels, dynsyms); |
1134 | if (dynrel_count < 0) | |
1135 | { | |
1136 | do_cleanups (back_to); | |
1137 | return; | |
1138 | } | |
5801f348 | 1139 | |
192b64e7 | 1140 | for (counter = 0, relptr = dynrels; |
5801f348 | 1141 | counter < dynrel_count; |
192b64e7 | 1142 | counter++, relptr++) |
5801f348 | 1143 | { |
0683ac4b | 1144 | arelent *rel = *relptr; |
26a859ec PS |
1145 | CORE_ADDR address = |
1146 | rel->address + ANOFFSET (section_offsets, SECT_OFF_DATA); | |
5801f348 | 1147 | |
0683ac4b PS |
1148 | switch (bfd_get_arch (abfd)) |
1149 | { | |
1150 | case bfd_arch_sparc: | |
1151 | if (rel->howto->type != RELOC_JMP_SLOT) | |
1152 | continue; | |
1153 | break; | |
1154 | case bfd_arch_m68k: | |
1155 | /* `16' is the type BFD produces for a jump table relocation. */ | |
1156 | if (rel->howto->type != 16) | |
1157 | continue; | |
5801f348 | 1158 | |
0683ac4b PS |
1159 | /* Adjust address in the jump table to point to |
1160 | the start of the bsr instruction. */ | |
1161 | address -= 2; | |
1162 | break; | |
1163 | default: | |
1164 | continue; | |
1165 | } | |
5801f348 | 1166 | |
b9e58503 | 1167 | name = (char *) bfd_asymbol_name (*rel->sym_ptr_ptr); |
ace4b8d7 FF |
1168 | prim_record_minimal_symbol (name, address, mst_solib_trampoline, |
1169 | objfile); | |
5801f348 | 1170 | } |
192b64e7 ILT |
1171 | |
1172 | do_cleanups (back_to); | |
5801f348 JK |
1173 | } |
1174 | ||
bd5635a1 RP |
1175 | /* Given pointers to an a.out symbol table in core containing dbx |
1176 | style data, setup partial_symtab's describing each source file for | |
3624c875 FF |
1177 | which debugging information is available. |
1178 | SYMFILE_NAME is the name of the file we are reading from | |
2af231b8 JG |
1179 | and SECTION_OFFSETS is the set of offsets for the various sections |
1180 | of the file (a set of zeros if the mainline program). */ | |
bd5635a1 RP |
1181 | |
1182 | static void | |
2af231b8 JG |
1183 | read_dbx_symtab (section_offsets, objfile, text_addr, text_size) |
1184 | struct section_offsets *section_offsets; | |
7d9884b9 | 1185 | struct objfile *objfile; |
bd5635a1 RP |
1186 | CORE_ADDR text_addr; |
1187 | int text_size; | |
1188 | { | |
139e2c0f SG |
1189 | register struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
1190 | struct internal_nlist nlist; | |
1191 | ||
bd5635a1 | 1192 | register char *namestring; |
bd5635a1 RP |
1193 | int nsl; |
1194 | int past_first_source_file = 0; | |
1195 | CORE_ADDR last_o_file_start = 0; | |
94f5a25f | 1196 | CORE_ADDR last_function_start = 0; |
0eb22669 | 1197 | struct cleanup *back_to; |
7d9884b9 | 1198 | bfd *abfd; |
3a179be1 | 1199 | int textlow_not_set; |
bd5635a1 | 1200 | |
bd5635a1 RP |
1201 | /* Current partial symtab */ |
1202 | struct partial_symtab *pst; | |
1203 | ||
1204 | /* List of current psymtab's include files */ | |
1205 | char **psymtab_include_list; | |
1206 | int includes_allocated; | |
1207 | int includes_used; | |
1208 | ||
1209 | /* Index within current psymtab dependency list */ | |
1210 | struct partial_symtab **dependency_list; | |
1211 | int dependencies_used, dependencies_allocated; | |
1212 | ||
9342ecb9 JG |
1213 | /* FIXME. We probably want to change stringtab_global rather than add this |
1214 | while processing every symbol entry. FIXME. */ | |
1215 | file_string_table_offset = 0; | |
1216 | next_file_string_table_offset = 0; | |
1217 | ||
3624c875 | 1218 | stringtab_global = DBX_STRINGTAB (objfile); |
bd5635a1 RP |
1219 | |
1220 | pst = (struct partial_symtab *) 0; | |
1221 | ||
1222 | includes_allocated = 30; | |
1223 | includes_used = 0; | |
1224 | psymtab_include_list = (char **) alloca (includes_allocated * | |
1225 | sizeof (char *)); | |
1226 | ||
1227 | dependencies_allocated = 30; | |
1228 | dependencies_used = 0; | |
1229 | dependency_list = | |
1230 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1231 | sizeof (struct partial_symtab *)); | |
1232 | ||
bd5635a1 | 1233 | /* Init bincl list */ |
021959e2 | 1234 | init_bincl_list (20, objfile); |
0eb22669 | 1235 | back_to = make_cleanup (free_bincl_list, objfile); |
bd5635a1 | 1236 | |
3416d90b | 1237 | last_source_file = NULL; |
bd5635a1 | 1238 | |
9d2b8d50 | 1239 | lowest_text_address = (CORE_ADDR)-1; |
bd5635a1 | 1240 | |
7d9884b9 JG |
1241 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ |
1242 | abfd = objfile->obfd; | |
bd5635a1 | 1243 | symbuf_end = symbuf_idx = 0; |
aab77d5f | 1244 | next_symbol_text_func = dbx_next_symbol_text; |
3a179be1 | 1245 | textlow_not_set = 1; |
bd5635a1 | 1246 | |
3624c875 | 1247 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
bd5635a1 RP |
1248 | { |
1249 | /* Get the symbol for this run and pull out some info */ | |
1250 | QUIT; /* allow this to be interruptable */ | |
1251 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1252 | fill_symbuf (abfd); |
bd5635a1 RP |
1253 | bufp = &symbuf[symbuf_idx++]; |
1254 | ||
1255 | /* | |
1256 | * Special case to speed up readin. | |
1257 | */ | |
139e2c0f SG |
1258 | if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE) |
1259 | continue; | |
bd5635a1 | 1260 | |
139e2c0f | 1261 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); |
94f5a25f | 1262 | OBJSTAT (objfile, n_stabs++); |
bd5635a1 RP |
1263 | |
1264 | /* Ok. There is a lot of code duplicated in the rest of this | |
1265 | switch statement (for efficiency reasons). Since I don't | |
1266 | like duplicating code, I will do my penance here, and | |
1267 | describe the code which is duplicated: | |
1268 | ||
1269 | *) The assignment to namestring. | |
1270 | *) The call to strchr. | |
1271 | *) The addition of a partial symbol the the two partial | |
1272 | symbol lists. This last is a large section of code, so | |
1273 | I've imbedded it in the following macro. | |
1274 | */ | |
1275 | ||
139e2c0f | 1276 | /* Set namestring based on nlist. If the string table index is invalid, |
bd5635a1 RP |
1277 | give a fake name, and print a single error message per symbol file read, |
1278 | rather than abort the symbol reading or flood the user with messages. */ | |
9342ecb9 JG |
1279 | |
1280 | /*FIXME: Too many adds and indirections in here for the inner loop. */ | |
bd5635a1 | 1281 | #define SET_NAMESTRING()\ |
139e2c0f | 1282 | if (((unsigned)CUR_SYMBOL_STRX + file_string_table_offset) >= \ |
9342ecb9 | 1283 | DBX_STRINGTAB_SIZE (objfile)) { \ |
51b80b00 | 1284 | complain (&string_table_offset_complaint, symnum); \ |
5801f348 | 1285 | namestring = "<bad string table offset>"; \ |
bd5635a1 | 1286 | } else \ |
139e2c0f | 1287 | namestring = CUR_SYMBOL_STRX + file_string_table_offset + \ |
9342ecb9 | 1288 | DBX_STRINGTAB (objfile) |
bd5635a1 | 1289 | |
139e2c0f SG |
1290 | #define CUR_SYMBOL_TYPE nlist.n_type |
1291 | #define CUR_SYMBOL_VALUE nlist.n_value | |
1292 | #define CUR_SYMBOL_STRX nlist.n_strx | |
7e258d18 | 1293 | #define DBXREAD_ONLY |
2af231b8 JG |
1294 | #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\ |
1295 | start_psymtab(ofile, secoff, fname, low, symoff, global_syms, static_syms) | |
3a179be1 SG |
1296 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set)\ |
1297 | end_psymtab(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set) | |
aab77d5f | 1298 | |
7e258d18 | 1299 | #include "partial-stab.h" |
bd5635a1 RP |
1300 | } |
1301 | ||
1302 | /* If there's stuff to be cleaned up, clean it up. */ | |
3624c875 | 1303 | if (DBX_SYMCOUNT (objfile) > 0 /* We have some syms */ |
9342ecb9 JG |
1304 | /*FIXME, does this have a bug at start address 0? */ |
1305 | && last_o_file_start | |
139e2c0f | 1306 | && objfile -> ei.entry_point < nlist.n_value |
3624c875 | 1307 | && objfile -> ei.entry_point >= last_o_file_start) |
bd5635a1 | 1308 | { |
3624c875 | 1309 | objfile -> ei.entry_file_lowpc = last_o_file_start; |
139e2c0f | 1310 | objfile -> ei.entry_file_highpc = nlist.n_value; |
bd5635a1 RP |
1311 | } |
1312 | ||
1313 | if (pst) | |
1314 | { | |
1315 | end_psymtab (pst, psymtab_include_list, includes_used, | |
9d2b8d50 JK |
1316 | symnum * symbol_size, |
1317 | (lowest_text_address == (CORE_ADDR)-1 | |
2fe3b329 PS |
1318 | ? (text_addr + section_offsets->offsets[SECT_OFF_TEXT]) |
1319 | : lowest_text_address) | |
9d2b8d50 | 1320 | + text_size, |
3a179be1 | 1321 | dependency_list, dependencies_used, textlow_not_set); |
bd5635a1 RP |
1322 | } |
1323 | ||
0eb22669 | 1324 | do_cleanups (back_to); |
bd5635a1 RP |
1325 | } |
1326 | ||
4a35d6e9 FF |
1327 | /* Allocate and partially fill a partial symtab. It will be |
1328 | completely filled at the end of the symbol list. | |
1329 | ||
1330 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1331 | is the address relative to which its symbols are (incremental) or 0 | |
1332 | (normal). */ | |
1333 | ||
bd5635a1 | 1334 | |
7e258d18 | 1335 | struct partial_symtab * |
2af231b8 | 1336 | start_psymtab (objfile, section_offsets, |
bd5635a1 | 1337 | filename, textlow, ldsymoff, global_syms, static_syms) |
7d9884b9 | 1338 | struct objfile *objfile; |
2af231b8 | 1339 | struct section_offsets *section_offsets; |
bd5635a1 RP |
1340 | char *filename; |
1341 | CORE_ADDR textlow; | |
1342 | int ldsymoff; | |
94f5a25f DP |
1343 | struct partial_symbol **global_syms; |
1344 | struct partial_symbol **static_syms; | |
bd5635a1 RP |
1345 | { |
1346 | struct partial_symtab *result = | |
2af231b8 | 1347 | start_psymtab_common(objfile, section_offsets, |
021959e2 | 1348 | filename, textlow, global_syms, static_syms); |
bd5635a1 | 1349 | |
021959e2 JG |
1350 | result->read_symtab_private = (char *) |
1351 | obstack_alloc (&objfile -> psymbol_obstack, sizeof (struct symloc)); | |
1352 | LDSYMOFF(result) = ldsymoff; | |
bd5635a1 | 1353 | result->read_symtab = dbx_psymtab_to_symtab; |
9342ecb9 JG |
1354 | SYMBOL_SIZE(result) = symbol_size; |
1355 | SYMBOL_OFFSET(result) = symbol_table_offset; | |
1356 | STRING_OFFSET(result) = string_table_offset; | |
1357 | FILE_STRING_OFFSET(result) = file_string_table_offset; | |
bd5635a1 | 1358 | |
2af231b8 JG |
1359 | /* If we're handling an ELF file, drag some section-relocation info |
1360 | for this source file out of the ELF symbol table, to compensate for | |
1361 | Sun brain death. This replaces the section_offsets in this psymtab, | |
1362 | if successful. */ | |
1363 | elfstab_offset_sections (objfile, result); | |
1364 | ||
2e4964ad FF |
1365 | /* Deduce the source language from the filename for this psymtab. */ |
1366 | psymtab_language = deduce_language_from_filename (filename); | |
1367 | ||
bd5635a1 RP |
1368 | return result; |
1369 | } | |
1370 | ||
cbba020f PS |
1371 | /* Close off the current usage of PST. |
1372 | Returns PST or NULL if the partial symtab was empty and thrown away. | |
bd5635a1 | 1373 | |
cbba020f | 1374 | FIXME: List variables and peculiarities of same. */ |
bd5635a1 | 1375 | |
cbba020f | 1376 | struct partial_symtab * |
bd5635a1 | 1377 | end_psymtab (pst, include_list, num_includes, capping_symbol_offset, |
3a179be1 | 1378 | capping_text, dependency_list, number_dependencies, textlow_not_set) |
bd5635a1 RP |
1379 | struct partial_symtab *pst; |
1380 | char **include_list; | |
1381 | int num_includes; | |
1382 | int capping_symbol_offset; | |
1383 | CORE_ADDR capping_text; | |
1384 | struct partial_symtab **dependency_list; | |
1385 | int number_dependencies; | |
3a179be1 | 1386 | int textlow_not_set; |
bd5635a1 RP |
1387 | { |
1388 | int i; | |
021959e2 | 1389 | struct objfile *objfile = pst -> objfile; |
bd5635a1 | 1390 | |
7e258d18 | 1391 | if (capping_symbol_offset != -1) |
3a179be1 | 1392 | LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst); |
bd5635a1 RP |
1393 | pst->texthigh = capping_text; |
1394 | ||
b9e58503 | 1395 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
9342ecb9 JG |
1396 | /* Under Solaris, the N_SO symbols always have a value of 0, |
1397 | instead of the usual address of the .o file. Therefore, | |
1398 | we have to do some tricks to fill in texthigh and textlow. | |
1399 | The first trick is in partial-stab.h: if we see a static | |
1400 | or global function, and the textlow for the current pst | |
3a179be1 SG |
1401 | is not set (ie: textlow_not_set), then we use that function's |
1402 | address for the textlow of the pst. */ | |
9342ecb9 | 1403 | |
b9e58503 | 1404 | /* Now, to fill in texthigh, we remember the last function seen |
9342ecb9 JG |
1405 | in the .o file (also in partial-stab.h). Also, there's a hack in |
1406 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field | |
1407 | to here via the misc_info field. Therefore, we can fill in | |
1408 | a reliable texthigh by taking the address plus size of the | |
b9e58503 | 1409 | last function in the file. */ |
9342ecb9 | 1410 | |
3a179be1 SG |
1411 | if (pst->texthigh == 0 && last_function_name) |
1412 | { | |
1413 | char *p; | |
1414 | int n; | |
1415 | struct minimal_symbol *minsym; | |
1416 | ||
1417 | p = strchr (last_function_name, ':'); | |
1418 | if (p == NULL) | |
1419 | p = last_function_name; | |
1420 | n = p - last_function_name; | |
1421 | p = alloca (n + 1); | |
1422 | strncpy (p, last_function_name, n); | |
1423 | p[n] = 0; | |
9342ecb9 | 1424 | |
3a179be1 | 1425 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
9342ecb9 | 1426 | |
3a179be1 | 1427 | if (minsym) |
899c4021 | 1428 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + MSYMBOL_SIZE (minsym); |
b9e58503 | 1429 | |
3a179be1 SG |
1430 | last_function_name = NULL; |
1431 | } | |
9342ecb9 JG |
1432 | |
1433 | /* this test will be true if the last .o file is only data */ | |
3a179be1 | 1434 | if (textlow_not_set) |
9342ecb9 | 1435 | pst->textlow = pst->texthigh; |
3a179be1 SG |
1436 | else |
1437 | { | |
1438 | struct partial_symtab *p1; | |
9342ecb9 | 1439 | |
3a179be1 SG |
1440 | /* If we know our own starting text address, then walk through all other |
1441 | psymtabs for this objfile, and if any didn't know their ending text | |
1442 | address, set it to our starting address. Take care to not set our | |
1443 | own ending address to our starting address, nor to set addresses on | |
1444 | `dependency' files that have both textlow and texthigh zero. */ | |
1445 | ||
1446 | ALL_OBJFILE_PSYMTABS (objfile, p1) | |
1447 | { | |
1448 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) | |
1449 | { | |
1450 | p1->texthigh = pst->textlow; | |
1451 | /* if this file has only data, then make textlow match texthigh */ | |
1452 | if (p1->textlow == 0) | |
1453 | p1->textlow = p1->texthigh; | |
1454 | } | |
1455 | } | |
9342ecb9 | 1456 | } |
9342ecb9 JG |
1457 | |
1458 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
b9e58503 | 1459 | #endif /* SOFUN_ADDRESS_MAYBE_MISSING. */ |
9342ecb9 | 1460 | |
bd5635a1 | 1461 | pst->n_global_syms = |
021959e2 | 1462 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); |
bd5635a1 | 1463 | pst->n_static_syms = |
021959e2 | 1464 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); |
bd5635a1 RP |
1465 | |
1466 | pst->number_of_dependencies = number_dependencies; | |
1467 | if (number_dependencies) | |
1468 | { | |
1469 | pst->dependencies = (struct partial_symtab **) | |
021959e2 | 1470 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 | 1471 | number_dependencies * sizeof (struct partial_symtab *)); |
7e258d18 | 1472 | memcpy (pst->dependencies, dependency_list, |
bd5635a1 RP |
1473 | number_dependencies * sizeof (struct partial_symtab *)); |
1474 | } | |
1475 | else | |
1476 | pst->dependencies = 0; | |
1477 | ||
1478 | for (i = 0; i < num_includes; i++) | |
1479 | { | |
bd5635a1 | 1480 | struct partial_symtab *subpst = |
021959e2 | 1481 | allocate_psymtab (include_list[i], objfile); |
7d9884b9 | 1482 | |
2af231b8 | 1483 | subpst->section_offsets = pst->section_offsets; |
021959e2 JG |
1484 | subpst->read_symtab_private = |
1485 | (char *) obstack_alloc (&objfile->psymbol_obstack, | |
1486 | sizeof (struct symloc)); | |
4a35d6e9 FF |
1487 | LDSYMOFF(subpst) = |
1488 | LDSYMLEN(subpst) = | |
bd5635a1 RP |
1489 | subpst->textlow = |
1490 | subpst->texthigh = 0; | |
1491 | ||
3f83182d JG |
1492 | /* We could save slight bits of space by only making one of these, |
1493 | shared by the entire set of include files. FIXME-someday. */ | |
bd5635a1 | 1494 | subpst->dependencies = (struct partial_symtab **) |
021959e2 | 1495 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 RP |
1496 | sizeof (struct partial_symtab *)); |
1497 | subpst->dependencies[0] = pst; | |
1498 | subpst->number_of_dependencies = 1; | |
1499 | ||
1500 | subpst->globals_offset = | |
1501 | subpst->n_global_syms = | |
1502 | subpst->statics_offset = | |
1503 | subpst->n_static_syms = 0; | |
1504 | ||
1505 | subpst->readin = 0; | |
9a822037 | 1506 | subpst->symtab = 0; |
2707b48a | 1507 | subpst->read_symtab = pst->read_symtab; |
bd5635a1 RP |
1508 | } |
1509 | ||
021959e2 | 1510 | sort_pst_symbols (pst); |
bd5635a1 | 1511 | |
f9623881 JG |
1512 | /* If there is already a psymtab or symtab for a file of this name, remove it. |
1513 | (If there is a symtab, more drastic things also happen.) | |
1514 | This happens in VxWorks. */ | |
1515 | free_named_symtabs (pst->filename); | |
1516 | ||
7d9884b9 | 1517 | if (num_includes == 0 |
5801f348 JK |
1518 | && number_dependencies == 0 |
1519 | && pst->n_global_syms == 0 | |
1520 | && pst->n_static_syms == 0) | |
1521 | { | |
1522 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
1523 | it is on the obstack, but we can forget to chain it on the list. */ | |
1524 | /* Empty psymtabs happen as a result of header files which don't have | |
1525 | any symbols in them. There can be a lot of them. But this check | |
1526 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
1527 | is not empty, but we don't realize that. Fixing that without slowing | |
1528 | things down might be tricky. */ | |
1529 | struct partial_symtab *prev_pst; | |
1530 | ||
1531 | /* First, snip it out of the psymtab chain */ | |
1532 | ||
1533 | if (pst->objfile->psymtabs == pst) | |
1534 | pst->objfile->psymtabs = pst->next; | |
1535 | else | |
1536 | for (prev_pst = pst->objfile->psymtabs; prev_pst; prev_pst = pst->next) | |
1537 | if (prev_pst->next == pst) | |
1538 | prev_pst->next = pst->next; | |
318bf84f | 1539 | |
5801f348 | 1540 | /* Next, put it on a free list for recycling */ |
318bf84f | 1541 | |
5801f348 JK |
1542 | pst->next = pst->objfile->free_psymtabs; |
1543 | pst->objfile->free_psymtabs = pst; | |
cbba020f | 1544 | |
5801f348 JK |
1545 | /* Indicate that psymtab was thrown away. */ |
1546 | pst = (struct partial_symtab *)NULL; | |
1547 | } | |
cbba020f | 1548 | return pst; |
bd5635a1 RP |
1549 | } |
1550 | \f | |
1551 | static void | |
4c07f28d | 1552 | dbx_psymtab_to_symtab_1 (pst) |
bd5635a1 | 1553 | struct partial_symtab *pst; |
bd5635a1 RP |
1554 | { |
1555 | struct cleanup *old_chain; | |
1556 | int i; | |
1557 | ||
1558 | if (!pst) | |
1559 | return; | |
1560 | ||
1561 | if (pst->readin) | |
1562 | { | |
199b2450 | 1563 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
bd5635a1 RP |
1564 | pst->filename); |
1565 | return; | |
1566 | } | |
1567 | ||
afe4ca15 | 1568 | /* Read in all partial symtabs on which this one is dependent */ |
bd5635a1 RP |
1569 | for (i = 0; i < pst->number_of_dependencies; i++) |
1570 | if (!pst->dependencies[i]->readin) | |
1571 | { | |
1572 | /* Inform about additional files that need to be read in. */ | |
1573 | if (info_verbose) | |
1574 | { | |
199b2450 | 1575 | fputs_filtered (" ", gdb_stdout); |
bd5635a1 | 1576 | wrap_here (""); |
199b2450 | 1577 | fputs_filtered ("and ", gdb_stdout); |
bd5635a1 RP |
1578 | wrap_here (""); |
1579 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
1580 | wrap_here (""); /* Flush output */ | |
199b2450 | 1581 | gdb_flush (gdb_stdout); |
bd5635a1 | 1582 | } |
4c07f28d | 1583 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); |
bd5635a1 RP |
1584 | } |
1585 | ||
4a35d6e9 | 1586 | if (LDSYMLEN(pst)) /* Otherwise it's a dummy */ |
bd5635a1 RP |
1587 | { |
1588 | /* Init stuff necessary for reading in symbols */ | |
3416d90b | 1589 | stabsread_init (); |
c0302457 | 1590 | buildsym_init (); |
bd5635a1 | 1591 | old_chain = make_cleanup (really_free_pendings, 0); |
9342ecb9 | 1592 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
4c07f28d FF |
1593 | symbol_size = SYMBOL_SIZE (pst); |
1594 | ||
1595 | /* Read in this file's symbols */ | |
2c7ab4ca | 1596 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); |
574dac8e | 1597 | read_ofile_symtab (pst); |
9404978d | 1598 | sort_symtab_syms (pst->symtab); |
bd5635a1 RP |
1599 | |
1600 | do_cleanups (old_chain); | |
1601 | } | |
1602 | ||
1603 | pst->readin = 1; | |
1604 | } | |
1605 | ||
ac88ca20 JG |
1606 | /* Read in all of the symbols for a given psymtab for real. |
1607 | Be verbose about it if the user wants that. */ | |
1608 | ||
bd5635a1 RP |
1609 | static void |
1610 | dbx_psymtab_to_symtab (pst) | |
1611 | struct partial_symtab *pst; | |
1612 | { | |
bd5635a1 | 1613 | bfd *sym_bfd; |
bd5635a1 RP |
1614 | |
1615 | if (!pst) | |
1616 | return; | |
1617 | ||
1618 | if (pst->readin) | |
1619 | { | |
199b2450 | 1620 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
bd5635a1 RP |
1621 | pst->filename); |
1622 | return; | |
1623 | } | |
1624 | ||
4a35d6e9 | 1625 | if (LDSYMLEN(pst) || pst->number_of_dependencies) |
bd5635a1 RP |
1626 | { |
1627 | /* Print the message now, before reading the string table, | |
1628 | to avoid disconcerting pauses. */ | |
1629 | if (info_verbose) | |
1630 | { | |
1631 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
199b2450 | 1632 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
1633 | } |
1634 | ||
7d9884b9 | 1635 | sym_bfd = pst->objfile->obfd; |
bd5635a1 | 1636 | |
aab77d5f PB |
1637 | next_symbol_text_func = dbx_next_symbol_text; |
1638 | ||
4c07f28d | 1639 | dbx_psymtab_to_symtab_1 (pst); |
bd5635a1 RP |
1640 | |
1641 | /* Match with global symbols. This only needs to be done once, | |
1642 | after all of the symtabs and dependencies have been read in. */ | |
021959e2 | 1643 | scan_file_globals (pst->objfile); |
bd5635a1 | 1644 | |
bd5635a1 RP |
1645 | /* Finish up the debug error message. */ |
1646 | if (info_verbose) | |
1647 | printf_filtered ("done.\n"); | |
1648 | } | |
1649 | } | |
1650 | ||
574dac8e | 1651 | /* Read in a defined section of a specific object file's symbols. */ |
9342ecb9 | 1652 | |
574dac8e JK |
1653 | static void |
1654 | read_ofile_symtab (pst) | |
1655 | struct partial_symtab *pst; | |
bd5635a1 RP |
1656 | { |
1657 | register char *namestring; | |
139e2c0f SG |
1658 | register struct external_nlist *bufp; |
1659 | struct internal_nlist nlist; | |
bd5635a1 | 1660 | unsigned char type; |
afe4ca15 | 1661 | unsigned max_symnum; |
7d9884b9 | 1662 | register bfd *abfd; |
574dac8e JK |
1663 | struct objfile *objfile; |
1664 | int sym_offset; /* Offset to start of symbols to read */ | |
1665 | int sym_size; /* Size of symbols to read */ | |
1666 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
1667 | int text_size; /* Size of text segment for symbols */ | |
1668 | struct section_offsets *section_offsets; | |
1669 | ||
1670 | objfile = pst->objfile; | |
1671 | sym_offset = LDSYMOFF(pst); | |
1672 | sym_size = LDSYMLEN(pst); | |
1673 | text_offset = pst->textlow; | |
1674 | text_size = pst->texthigh - pst->textlow; | |
1675 | section_offsets = pst->section_offsets; | |
7d9884b9 | 1676 | |
021959e2 | 1677 | current_objfile = objfile; |
3416d90b | 1678 | subfile_stack = NULL; |
bd5635a1 | 1679 | |
3624c875 | 1680 | stringtab_global = DBX_STRINGTAB (objfile); |
3416d90b | 1681 | last_source_file = NULL; |
bd5635a1 | 1682 | |
7d9884b9 JG |
1683 | abfd = objfile->obfd; |
1684 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ | |
bd5635a1 RP |
1685 | symbuf_end = symbuf_idx = 0; |
1686 | ||
1687 | /* It is necessary to actually read one symbol *before* the start | |
1688 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
1689 | occurs before the N_SO symbol. | |
1690 | ||
1691 | Detecting this in read_dbx_symtab | |
1692 | would slow down initial readin, so we look for it here instead. */ | |
9342ecb9 | 1693 | if (!processing_acc_compilation && sym_offset >= (int)symbol_size) |
bd5635a1 | 1694 | { |
2c7ab4ca | 1695 | bfd_seek (symfile_bfd, sym_offset - symbol_size, SEEK_CUR); |
7d9884b9 | 1696 | fill_symbuf (abfd); |
bd5635a1 | 1697 | bufp = &symbuf[symbuf_idx++]; |
139e2c0f | 1698 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); |
94f5a25f | 1699 | OBJSTAT (objfile, n_stabs++); |
bd5635a1 | 1700 | |
afe4ca15 | 1701 | SET_NAMESTRING (); |
bd5635a1 | 1702 | |
1aed6766 | 1703 | processing_gcc_compilation = 0; |
139e2c0f | 1704 | if (nlist.n_type == N_TEXT) |
1aed6766 | 1705 | { |
db2302cb PS |
1706 | const char *tempstring = namestring; |
1707 | ||
2e4964ad | 1708 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1709 | processing_gcc_compilation = 1; |
2e4964ad | 1710 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1711 | processing_gcc_compilation = 2; |
db2302cb PS |
1712 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) |
1713 | ++tempstring; | |
1714 | if (STREQN (tempstring, "__gnu_compiled", 14)) | |
1715 | processing_gcc_compilation = 2; | |
1aed6766 | 1716 | } |
3416d90b FF |
1717 | |
1718 | /* Try to select a C++ demangling based on the compilation unit | |
1719 | producer. */ | |
1720 | ||
1721 | if (processing_gcc_compilation) | |
1722 | { | |
1aed6766 | 1723 | if (AUTO_DEMANGLING) |
3416d90b FF |
1724 | { |
1725 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1726 | } | |
3416d90b | 1727 | } |
bd5635a1 RP |
1728 | } |
1729 | else | |
1730 | { | |
1731 | /* The N_SO starting this symtab is the first symbol, so we | |
1732 | better not check the symbol before it. I'm not this can | |
1733 | happen, but it doesn't hurt to check for it. */ | |
2c7ab4ca | 1734 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); |
bd5635a1 RP |
1735 | processing_gcc_compilation = 0; |
1736 | } | |
1737 | ||
1738 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1739 | fill_symbuf (abfd); |
bd5635a1 | 1740 | bufp = &symbuf[symbuf_idx]; |
139e2c0f | 1741 | if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO) |
bd5635a1 RP |
1742 | error("First symbol in segment of executable not a source symbol"); |
1743 | ||
afe4ca15 JG |
1744 | max_symnum = sym_size / symbol_size; |
1745 | ||
bd5635a1 | 1746 | for (symnum = 0; |
afe4ca15 | 1747 | symnum < max_symnum; |
bd5635a1 RP |
1748 | symnum++) |
1749 | { | |
1750 | QUIT; /* Allow this to be interruptable */ | |
1751 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1752 | fill_symbuf(abfd); |
bd5635a1 | 1753 | bufp = &symbuf[symbuf_idx++]; |
139e2c0f | 1754 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); |
94f5a25f | 1755 | OBJSTAT (objfile, n_stabs++); |
bd5635a1 | 1756 | |
139e2c0f | 1757 | type = bfd_h_get_8 (abfd, bufp->e_type); |
bd5635a1 | 1758 | |
afe4ca15 | 1759 | SET_NAMESTRING (); |
bd5635a1 | 1760 | |
7d9884b9 | 1761 | if (type & N_STAB) { |
139e2c0f | 1762 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
2af231b8 | 1763 | namestring, section_offsets, objfile); |
7d9884b9 | 1764 | } |
bd5635a1 RP |
1765 | /* We skip checking for a new .o or -l file; that should never |
1766 | happen in this routine. */ | |
1aed6766 | 1767 | else if (type == N_TEXT) |
3416d90b FF |
1768 | { |
1769 | /* I don't think this code will ever be executed, because | |
1770 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
1771 | the N_SO symbol which starts this source file. | |
1772 | However, there is no reason not to accept | |
1773 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
1aed6766 | 1774 | |
2e4964ad | 1775 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1776 | processing_gcc_compilation = 1; |
2e4964ad | 1777 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 SG |
1778 | processing_gcc_compilation = 2; |
1779 | ||
1aed6766 | 1780 | if (AUTO_DEMANGLING) |
3416d90b FF |
1781 | { |
1782 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1783 | } | |
3416d90b | 1784 | } |
bd5635a1 RP |
1785 | else if (type & N_EXT || type == (unsigned char)N_TEXT |
1786 | || type == (unsigned char)N_NBTEXT | |
0c4d2cc2 | 1787 | ) { |
bd5635a1 RP |
1788 | /* Global symbol: see if we came across a dbx defintion for |
1789 | a corresponding symbol. If so, store the value. Remove | |
1790 | syms from the chain when their values are stored, but | |
1791 | search the whole chain, as there may be several syms from | |
1792 | different files with the same name. */ | |
1793 | /* This is probably not true. Since the files will be read | |
1794 | in one at a time, each reference to a global symbol will | |
1795 | be satisfied in each file as it appears. So we skip this | |
1796 | section. */ | |
1797 | ; | |
0c4d2cc2 | 1798 | } |
bd5635a1 | 1799 | } |
9404978d | 1800 | |
021959e2 | 1801 | current_objfile = NULL; |
9342ecb9 JG |
1802 | |
1803 | /* In a Solaris elf file, this variable, which comes from the | |
1804 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
1805 | which comes from pst->textlow is correct. */ | |
1806 | if (last_source_start_addr == 0) | |
1807 | last_source_start_addr = text_offset; | |
1808 | ||
94f5a25f DP |
1809 | /* In reordered executables last_source_start_addr may not be the |
1810 | lower bound for this symtab, instead use text_offset which comes | |
1811 | from pst->textlow which is correct. */ | |
1812 | if (last_source_start_addr > text_offset) | |
1813 | last_source_start_addr = text_offset; | |
1814 | ||
1815 | pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT); | |
1816 | ||
d719efc6 DP |
1817 | /* Process items which we had to "process_later" due to dependancies |
1818 | on other stabs. */ | |
1819 | process_now (objfile); | |
94f5a25f | 1820 | |
3416d90b | 1821 | end_stabs (); |
bd5635a1 | 1822 | } |
574dac8e | 1823 | |
bd5635a1 | 1824 | \f |
c55e6167 JG |
1825 | /* This handles a single symbol from the symbol-file, building symbols |
1826 | into a GDB symtab. It takes these arguments and an implicit argument. | |
1827 | ||
1828 | TYPE is the type field of the ".stab" symbol entry. | |
1829 | DESC is the desc field of the ".stab" entry. | |
1830 | VALU is the value field of the ".stab" entry. | |
1831 | NAME is the symbol name, in our address space. | |
2af231b8 JG |
1832 | SECTION_OFFSETS is a set of amounts by which the sections of this object |
1833 | file were relocated when it was loaded into memory. | |
1834 | All symbols that refer | |
1835 | to memory locations need to be offset by these amounts. | |
9342ecb9 | 1836 | OBJFILE is the object file from which we are reading symbols. |
c55e6167 JG |
1837 | It is used in end_symtab. */ |
1838 | ||
7e258d18 | 1839 | void |
2af231b8 | 1840 | process_one_symbol (type, desc, valu, name, section_offsets, objfile) |
bd5635a1 RP |
1841 | int type, desc; |
1842 | CORE_ADDR valu; | |
1843 | char *name; | |
2af231b8 | 1844 | struct section_offsets *section_offsets; |
9342ecb9 | 1845 | struct objfile *objfile; |
bd5635a1 | 1846 | { |
a5e6391b JK |
1847 | #ifdef SUN_FIXED_LBRAC_BUG |
1848 | /* If SUN_FIXED_LBRAC_BUG is defined, then it tells us whether we need | |
1849 | to correct the address of N_LBRAC's. If it is not defined, then | |
1850 | we never need to correct the addresses. */ | |
1851 | ||
0cf9329b | 1852 | /* This records the last pc address we've seen. We depend on there being |
bd5635a1 RP |
1853 | an SLINE or FUN or SO before the first LBRAC, since the variable does |
1854 | not get reset in between reads of different symbol files. */ | |
1855 | static CORE_ADDR last_pc_address; | |
a5e6391b | 1856 | #endif |
8357834f | 1857 | |
bd5635a1 | 1858 | register struct context_stack *new; |
9342ecb9 JG |
1859 | /* This remembers the address of the start of a function. It is used |
1860 | because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries are | |
1861 | relative to the current function's start address. On systems | |
2af231b8 JG |
1862 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, and is |
1863 | used to relocate these symbol types rather than SECTION_OFFSETS. */ | |
9342ecb9 | 1864 | static CORE_ADDR function_start_offset; |
bd5635a1 | 1865 | |
8357834f | 1866 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this source |
b8ec9a79 | 1867 | file. Used to detect the SunPRO solaris compiler. */ |
4d57c599 | 1868 | static int n_opt_found; |
8357834f | 1869 | |
b8ec9a79 JK |
1870 | /* The stab type used for the definition of the last function. |
1871 | N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */ | |
1872 | static int function_stab_type = 0; | |
1873 | ||
574dac8e JK |
1874 | if (!block_address_function_relative) |
1875 | /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the | |
1876 | function start address, so just use the text offset. */ | |
1877 | function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
51b80b00 | 1878 | |
bd5635a1 RP |
1879 | /* Something is wrong if we see real data before |
1880 | seeing a source file name. */ | |
1881 | ||
3416d90b | 1882 | if (last_source_file == NULL && type != (unsigned char)N_SO) |
bd5635a1 | 1883 | { |
a5e6391b JK |
1884 | /* Ignore any symbols which appear before an N_SO symbol. Currently |
1885 | no one puts symbols there, but we should deal gracefully with the | |
1886 | case. A complain()t might be in order (if !IGNORE_SYMBOL (type)), | |
1887 | but this should not be an error (). */ | |
1888 | return; | |
bd5635a1 RP |
1889 | } |
1890 | ||
1891 | switch (type) | |
1892 | { | |
1893 | case N_FUN: | |
1894 | case N_FNAME: | |
94f5a25f | 1895 | |
139e2c0f | 1896 | if (*name == '\000') |
94f5a25f DP |
1897 | { |
1898 | /* This N_FUN marks the end of a function. This closes off the | |
1899 | current block. */ | |
1900 | within_function = 0; | |
1901 | new = pop_context (); | |
1902 | ||
1903 | /* Make a block for the local symbols within. */ | |
1904 | finish_block (new->name, &local_symbols, new->old_blocks, | |
609fd033 | 1905 | new->start_addr, new->start_addr + valu, |
94f5a25f DP |
1906 | objfile); |
1907 | break; | |
1908 | } | |
1909 | ||
2af231b8 JG |
1910 | /* Relocate for dynamic loading */ |
1911 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
b8ec9a79 | 1912 | goto define_a_symbol; |
bd5635a1 | 1913 | |
bd5635a1 RP |
1914 | case N_LBRAC: |
1915 | /* This "symbol" just indicates the start of an inner lexical | |
1916 | context within a function. */ | |
1917 | ||
b9e58503 PS |
1918 | /* Ignore extra outermost context from SunPRO cc and acc. */ |
1919 | if (n_opt_found && desc == 1) | |
1920 | break; | |
1921 | ||
574dac8e JK |
1922 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1923 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1924 | valu += function_start_offset; |
c55e6167 | 1925 | #else |
574dac8e JK |
1926 | if (block_address_function_relative) |
1927 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1928 | valu += function_start_offset; | |
1929 | else | |
1930 | /* On most machines, the block addresses are relative to the | |
1931 | N_SO, the linker did not relocate them (sigh). */ | |
1932 | valu += last_source_start_addr; | |
bd5635a1 RP |
1933 | #endif |
1934 | ||
a5e6391b | 1935 | #ifdef SUN_FIXED_LBRAC_BUG |
8357834f | 1936 | if (!SUN_FIXED_LBRAC_BUG && valu < last_pc_address) { |
bd5635a1 | 1937 | /* Patch current LBRAC pc value to match last handy pc value */ |
51b80b00 | 1938 | complain (&lbrac_complaint); |
bd5635a1 RP |
1939 | valu = last_pc_address; |
1940 | } | |
a5e6391b | 1941 | #endif |
7d9884b9 | 1942 | new = push_context (desc, valu); |
bd5635a1 RP |
1943 | break; |
1944 | ||
1945 | case N_RBRAC: | |
1946 | /* This "symbol" just indicates the end of an inner lexical | |
1947 | context that was started with N_LBRAC. */ | |
1948 | ||
b9e58503 PS |
1949 | /* Ignore extra outermost context from SunPRO cc and acc. */ |
1950 | if (n_opt_found && desc == 1) | |
1951 | break; | |
1952 | ||
574dac8e JK |
1953 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1954 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1955 | valu += function_start_offset; |
c55e6167 | 1956 | #else |
574dac8e JK |
1957 | if (block_address_function_relative) |
1958 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1959 | valu += function_start_offset; | |
1960 | else | |
1961 | /* On most machines, the block addresses are relative to the | |
1962 | N_SO, the linker did not relocate them (sigh). */ | |
1963 | valu += last_source_start_addr; | |
bd5635a1 RP |
1964 | #endif |
1965 | ||
7d9884b9 | 1966 | new = pop_context(); |
bd5635a1 | 1967 | if (desc != new->depth) |
51b80b00 | 1968 | complain (&lbrac_mismatch_complaint, symnum); |
bd5635a1 RP |
1969 | |
1970 | /* Some compilers put the variable decls inside of an | |
1971 | LBRAC/RBRAC block. This macro should be nonzero if this | |
1972 | is true. DESC is N_DESC from the N_RBRAC symbol. | |
0cf9329b PB |
1973 | GCC_P is true if we've detected the GCC_COMPILED_SYMBOL |
1974 | or the GCC2_COMPILED_SYMBOL. */ | |
bd5635a1 RP |
1975 | #if !defined (VARIABLES_INSIDE_BLOCK) |
1976 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 0 | |
1977 | #endif | |
1978 | ||
1979 | /* Can only use new->locals as local symbols here if we're in | |
1980 | gcc or on a machine that puts them before the lbrack. */ | |
1981 | if (!VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
1982 | local_symbols = new->locals; | |
1983 | ||
2f8c3639 JL |
1984 | if (context_stack_depth |
1985 | > !VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
bd5635a1 | 1986 | { |
2f8c3639 JL |
1987 | /* This is not the outermost LBRAC...RBRAC pair in the function, |
1988 | its local symbols preceded it, and are the ones just recovered | |
1989 | from the context stack. Define the block for them (but don't | |
1990 | bother if the block contains no symbols. Should we complain | |
1991 | on blocks without symbols? I can't think of any useful purpose | |
1992 | for them). */ | |
1993 | if (local_symbols != NULL) | |
bd5635a1 | 1994 | { |
2f8c3639 JL |
1995 | /* Muzzle a compiler bug that makes end < start. (which |
1996 | compilers? Is this ever harmful?). */ | |
1997 | if (new->start_addr > valu) | |
1998 | { | |
1999 | complain (&lbrac_rbrac_complaint); | |
2000 | new->start_addr = valu; | |
2001 | } | |
2002 | /* Make a block for the local symbols within. */ | |
2003 | finish_block (0, &local_symbols, new->old_blocks, | |
2004 | new->start_addr, valu, objfile); | |
bd5635a1 | 2005 | } |
bd5635a1 RP |
2006 | } |
2007 | else | |
2008 | { | |
2f8c3639 JL |
2009 | /* This is the outermost LBRAC...RBRAC pair. There is no |
2010 | need to do anything; leave the symbols that preceded it | |
2011 | to be attached to the function's own block. We need to | |
2012 | indicate that we just moved outside of the function. */ | |
bd5635a1 RP |
2013 | within_function = 0; |
2014 | } | |
2f8c3639 | 2015 | |
bd5635a1 RP |
2016 | if (VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) |
2017 | /* Now pop locals of block just finished. */ | |
2018 | local_symbols = new->locals; | |
2019 | break; | |
2020 | ||
9bb30452 | 2021 | case N_FN: |
6150cc73 | 2022 | case N_FN_SEQ: |
9bb30452 | 2023 | /* This kind of symbol indicates the start of an object file. */ |
2af231b8 JG |
2024 | /* Relocate for dynamic loading */ |
2025 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
bd5635a1 RP |
2026 | break; |
2027 | ||
2028 | case N_SO: | |
2029 | /* This type of symbol indicates the start of data | |
2030 | for one source file. | |
2031 | Finish the symbol table of the previous source file | |
2032 | (if any) and start accumulating a new symbol table. */ | |
2af231b8 JG |
2033 | /* Relocate for dynamic loading */ |
2034 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c55e6167 | 2035 | |
8357834f JK |
2036 | n_opt_found = 0; |
2037 | ||
a5e6391b | 2038 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 2039 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 2040 | #endif |
8357834f | 2041 | |
bd5635a1 RP |
2042 | #ifdef PCC_SOL_BROKEN |
2043 | /* pcc bug, occasionally puts out SO for SOL. */ | |
2044 | if (context_stack_depth > 0) | |
2045 | { | |
2046 | start_subfile (name, NULL); | |
2047 | break; | |
2048 | } | |
2049 | #endif | |
2050 | if (last_source_file) | |
7e258d18 PB |
2051 | { |
2052 | /* Check if previous symbol was also an N_SO (with some | |
2053 | sanity checks). If so, that one was actually the directory | |
2054 | name, and the current one is the real file name. | |
2055 | Patch things up. */ | |
6985bc54 | 2056 | if (previous_stab_code == (unsigned char) N_SO) |
7e258d18 | 2057 | { |
3416d90b | 2058 | patch_subfile_names (current_subfile, name); |
c72af089 | 2059 | break; /* Ignore repeated SOs */ |
7e258d18 | 2060 | } |
94f5a25f | 2061 | end_symtab (valu, objfile, SECT_OFF_TEXT); |
3416d90b | 2062 | end_stabs (); |
7e258d18 | 2063 | } |
320f93f7 SG |
2064 | |
2065 | /* Null name means this just marks the end of text for this .o file. | |
2066 | Don't start a new symtab in this case. */ | |
2067 | if (*name == '\000') | |
2068 | break; | |
2069 | ||
3416d90b | 2070 | start_stabs (); |
bd5635a1 | 2071 | start_symtab (name, NULL, valu); |
609fd033 | 2072 | record_debugformat ("stabs"); |
bd5635a1 RP |
2073 | break; |
2074 | ||
2075 | case N_SOL: | |
2076 | /* This type of symbol indicates the start of data for | |
2077 | a sub-source-file, one whose contents were copied or | |
2078 | included in the compilation of the main source file | |
2079 | (whose name was given in the N_SO symbol.) */ | |
2af231b8 JG |
2080 | /* Relocate for dynamic loading */ |
2081 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
784fd92b | 2082 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
2083 | break; |
2084 | ||
2085 | case N_BINCL: | |
2086 | push_subfile (); | |
2087 | add_new_header_file (name, valu); | |
784fd92b | 2088 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
2089 | break; |
2090 | ||
2091 | case N_EINCL: | |
784fd92b | 2092 | start_subfile (pop_subfile (), current_subfile->dirname); |
bd5635a1 RP |
2093 | break; |
2094 | ||
2095 | case N_EXCL: | |
2096 | add_old_header_file (name, valu); | |
2097 | break; | |
2098 | ||
2099 | case N_SLINE: | |
2100 | /* This type of "symbol" really just records | |
2101 | one line-number -- core-address correspondence. | |
2102 | Enter it in the line list for this symbol table. */ | |
9342ecb9 JG |
2103 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
2104 | valu += function_start_offset; | |
a5e6391b | 2105 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 2106 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 2107 | #endif |
4137c5fc | 2108 | record_line (current_subfile, desc, valu); |
bd5635a1 RP |
2109 | break; |
2110 | ||
2111 | case N_BCOMM: | |
4d57c599 | 2112 | common_block_start (name, objfile); |
bd5635a1 RP |
2113 | break; |
2114 | ||
2115 | case N_ECOMM: | |
4d57c599 JK |
2116 | common_block_end (objfile); |
2117 | break; | |
bd5635a1 | 2118 | |
2af231b8 JG |
2119 | /* The following symbol types need to have the appropriate offset added |
2120 | to their value; then we process symbol definitions in the name. */ | |
2121 | ||
2122 | case N_STSYM: /* Static symbol in data seg */ | |
2123 | case N_LCSYM: /* Static symbol in BSS seg */ | |
2124 | case N_ROSYM: /* Static symbol in Read-only data seg */ | |
4d57c599 JK |
2125 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
2126 | Solaris2's stabs-in-elf makes *most* symbols relative | |
2127 | but leaves a few absolute (at least for Solaris 2.1 and version | |
2128 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on the fence. | |
2af231b8 JG |
2129 | .stab "foo:S...",N_STSYM is absolute (ld relocates it) |
2130 | .stab "foo:V...",N_STSYM is relative (section base subtracted). | |
2131 | This leaves us no choice but to search for the 'S' or 'V'... | |
2132 | (or pass the whole section_offsets stuff down ONE MORE function | |
4d57c599 | 2133 | call level, which we really don't want to do). */ |
2af231b8 JG |
2134 | { |
2135 | char *p; | |
a66e8382 SG |
2136 | |
2137 | /* .o files and NLMs have non-zero text seg offsets, but don't need | |
2138 | their static syms offset in this fashion. XXX - This is really a | |
2139 | crock that should be fixed in the solib handling code so that I | |
2140 | don't have to work around it here. */ | |
2141 | ||
2142 | if (!symfile_relocatable) | |
2af231b8 | 2143 | { |
a66e8382 SG |
2144 | p = strchr (name, ':'); |
2145 | if (p != 0 && p[1] == 'S') | |
2146 | { | |
2147 | /* The linker relocated it. We don't want to add an | |
2148 | elfstab_offset_sections-type offset, but we *do* want | |
2149 | to add whatever solib.c passed to symbol_file_add as | |
2150 | addr (this is known to affect SunOS4, and I suspect ELF | |
2151 | too). Since elfstab_offset_sections currently does not | |
2152 | muck with the text offset (there is no Ttext.text | |
2153 | symbol), we can get addr from the text offset. If | |
2154 | elfstab_offset_sections ever starts dealing with the | |
2155 | text offset, and we still need to do this, we need to | |
2156 | invent a SECT_OFF_ADDR_KLUDGE or something. */ | |
2157 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2158 | goto define_a_symbol; | |
2159 | } | |
2af231b8 JG |
2160 | } |
2161 | /* Since it's not the kludge case, re-dispatch to the right handler. */ | |
2162 | switch (type) { | |
2163 | case N_STSYM: goto case_N_STSYM; | |
2164 | case N_LCSYM: goto case_N_LCSYM; | |
2165 | case N_ROSYM: goto case_N_ROSYM; | |
2166 | default: abort(); | |
2167 | } | |
2168 | } | |
2169 | ||
2170 | case_N_STSYM: /* Static symbol in data seg */ | |
c55e6167 | 2171 | case N_DSLINE: /* Source line number, data seg */ |
2af231b8 JG |
2172 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA); |
2173 | goto define_a_symbol; | |
2174 | ||
2175 | case_N_LCSYM: /* Static symbol in BSS seg */ | |
c55e6167 JG |
2176 | case N_BSLINE: /* Source line number, bss seg */ |
2177 | /* N_BROWS: overlaps with N_BSLINE */ | |
2af231b8 JG |
2178 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS); |
2179 | goto define_a_symbol; | |
2180 | ||
2181 | case_N_ROSYM: /* Static symbol in Read-only data seg */ | |
2182 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA); | |
2183 | goto define_a_symbol; | |
2184 | ||
c55e6167 | 2185 | case N_ENTRY: /* Alternate entry point */ |
2af231b8 JG |
2186 | /* Relocate for dynamic loading */ |
2187 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
2188 | goto define_a_symbol; | |
c55e6167 | 2189 | |
4f470205 JK |
2190 | /* The following symbol types we don't know how to process. Handle |
2191 | them in a "default" way, but complain to people who care. */ | |
2192 | default: | |
2193 | case N_CATCH: /* Exception handler catcher */ | |
2194 | case N_EHDECL: /* Exception handler name */ | |
2195 | case N_PC: /* Global symbol in Pascal */ | |
2196 | case N_M2C: /* Modula-2 compilation unit */ | |
2197 | /* N_MOD2: overlaps with N_EHDECL */ | |
2198 | case N_SCOPE: /* Modula-2 scope information */ | |
2199 | case N_ECOML: /* End common (local name) */ | |
2200 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
2201 | case N_NBDATA: | |
2202 | case N_NBBSS: | |
2203 | case N_NBSTS: | |
2204 | case N_NBLCS: | |
9d2b8d50 | 2205 | complain (&unknown_symtype_complaint, local_hex_string (type)); |
4f470205 JK |
2206 | /* FALLTHROUGH */ |
2207 | ||
c55e6167 JG |
2208 | /* The following symbol types don't need the address field relocated, |
2209 | since it is either unused, or is absolute. */ | |
2af231b8 | 2210 | define_a_symbol: |
c55e6167 JG |
2211 | case N_GSYM: /* Global variable */ |
2212 | case N_NSYMS: /* Number of symbols (ultrix) */ | |
2213 | case N_NOMAP: /* No map? (ultrix) */ | |
2214 | case N_RSYM: /* Register variable */ | |
2215 | case N_DEFD: /* Modula-2 GNU module dependency */ | |
2216 | case N_SSYM: /* Struct or union element */ | |
2217 | case N_LSYM: /* Local symbol in stack */ | |
2218 | case N_PSYM: /* Parameter variable */ | |
2219 | case N_LENG: /* Length of preceding symbol type */ | |
2220 | if (name) | |
4f470205 | 2221 | { |
b8ec9a79 JK |
2222 | int deftype; |
2223 | char *colon_pos = strchr (name, ':'); | |
2224 | if (colon_pos == NULL) | |
2225 | deftype = '\0'; | |
2226 | else | |
2227 | deftype = colon_pos[1]; | |
2228 | ||
2229 | switch (deftype) | |
4f470205 | 2230 | { |
b8ec9a79 JK |
2231 | case 'f': |
2232 | case 'F': | |
2233 | function_stab_type = type; | |
2234 | ||
b9e58503 PS |
2235 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
2236 | /* Deal with the SunPRO 3.0 compiler which omits the address | |
2237 | from N_FUN symbols. */ | |
989d9cba JK |
2238 | if (type == N_FUN |
2239 | && valu == ANOFFSET (section_offsets, SECT_OFF_TEXT)) | |
b9e58503 PS |
2240 | { |
2241 | struct minimal_symbol *msym; | |
2242 | char *p; | |
2243 | int n; | |
2244 | ||
2245 | p = strchr (name, ':'); | |
2246 | if (p == NULL) | |
2247 | p = name; | |
2248 | n = p - name; | |
2249 | p = alloca (n + 1); | |
2250 | strncpy (p, name, n); | |
2251 | p[n] = 0; | |
2252 | ||
2253 | msym = lookup_minimal_symbol (p, last_source_file, | |
2254 | objfile); | |
2255 | if (msym) | |
2256 | valu = SYMBOL_VALUE_ADDRESS (msym); | |
2257 | } | |
2258 | #endif | |
2259 | ||
3ef0fc8c | 2260 | #ifdef SUN_FIXED_LBRAC_BUG |
b8ec9a79 JK |
2261 | /* The Sun acc compiler, under SunOS4, puts out |
2262 | functions with N_GSYM or N_STSYM. The problem is | |
2263 | that the address of the symbol is no good (for N_GSYM | |
2264 | it doesn't even attept an address; for N_STSYM it | |
2265 | puts out an address but then it gets relocated | |
2266 | relative to the data segment, not the text segment). | |
2267 | Currently we can't fix this up later as we do for | |
2268 | some types of symbol in scan_file_globals. | |
2269 | Fortunately we do have a way of finding the address - | |
2270 | we know that the value in last_pc_address is either | |
2271 | the one we want (if we're dealing with the first | |
2272 | function in an object file), or somewhere in the | |
2273 | previous function. This means that we can use the | |
2274 | minimal symbol table to get the address. */ | |
2275 | ||
b9e58503 PS |
2276 | /* Starting with release 3.0, the Sun acc compiler, |
2277 | under SunOS4, puts out functions with N_FUN and a value | |
2278 | of zero. This gets relocated to the start of the text | |
2279 | segment of the module, which is no good either. | |
2280 | Under SunOS4 we can deal with this as N_SLINE and N_SO | |
2281 | entries contain valid absolute addresses. | |
2282 | Release 3.0 acc also puts out N_OPT entries, which makes | |
2283 | it possible to discern acc from cc or gcc. */ | |
2284 | ||
2285 | if (type == N_GSYM || type == N_STSYM | |
2286 | || (type == N_FUN | |
2287 | && n_opt_found && !block_address_function_relative)) | |
b8ec9a79 JK |
2288 | { |
2289 | struct minimal_symbol *m; | |
2290 | int l = colon_pos - name; | |
2291 | ||
2292 | m = lookup_minimal_symbol_by_pc (last_pc_address); | |
2b576293 C |
2293 | if (m && STREQN (SYMBOL_NAME (m), name, l) |
2294 | && SYMBOL_NAME (m) [l] == '\0') | |
b8ec9a79 JK |
2295 | /* last_pc_address was in this function */ |
2296 | valu = SYMBOL_VALUE (m); | |
94f5a25f DP |
2297 | else if (m && SYMBOL_NAME (m+1) |
2298 | && STREQN (SYMBOL_NAME (m+1), name, l) | |
2b576293 | 2299 | && SYMBOL_NAME (m+1) [l] == '\0') |
3c7d3064 JK |
2300 | /* last_pc_address was in last function */ |
2301 | valu = SYMBOL_VALUE (m+1); | |
b8ec9a79 | 2302 | else |
3c7d3064 JK |
2303 | /* Not found - use last_pc_address (for finish_block) */ |
2304 | valu = last_pc_address; | |
b8ec9a79 JK |
2305 | } |
2306 | ||
b8ec9a79 JK |
2307 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
2308 | #endif | |
2309 | ||
2310 | if (block_address_function_relative) | |
2311 | /* For Solaris 2.0 compilers, the block addresses and | |
2312 | N_SLINE's are relative to the start of the | |
2313 | function. On normal systems, and when using gcc on | |
2314 | Solaris 2.0, these addresses are just absolute, or | |
2315 | relative to the N_SO, depending on | |
2316 | BLOCK_ADDRESS_ABSOLUTE. */ | |
2317 | function_start_offset = valu; | |
2318 | ||
2319 | within_function = 1; | |
2320 | if (context_stack_depth > 0) | |
2321 | { | |
2322 | new = pop_context (); | |
2323 | /* Make a block for the local symbols within. */ | |
2324 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2325 | new->start_addr, valu, objfile); | |
2326 | } | |
2327 | /* Stack must be empty now. */ | |
2328 | if (context_stack_depth != 0) | |
2329 | complain (&lbrac_unmatched_complaint, symnum); | |
2330 | ||
2331 | new = push_context (0, valu); | |
2332 | new->name = define_symbol (valu, name, desc, type, objfile); | |
2333 | break; | |
2334 | ||
2335 | default: | |
2336 | define_symbol (valu, name, desc, type, objfile); | |
2337 | break; | |
4f470205 JK |
2338 | } |
2339 | } | |
bd5635a1 RP |
2340 | break; |
2341 | ||
ec8ceca3 JG |
2342 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
2343 | for a bunch of other flags, too. Someday we may parse their | |
2344 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
2345 | case N_OPT: /* Solaris 2: Compiler options */ | |
2346 | if (name) | |
2347 | { | |
2e4964ad | 2348 | if (STREQ (name, GCC2_COMPILED_FLAG_SYMBOL)) |
3416d90b | 2349 | { |
1aed6766 | 2350 | processing_gcc_compilation = 2; |
3416d90b | 2351 | #if 1 /* Works, but is experimental. -fnf */ |
1aed6766 | 2352 | if (AUTO_DEMANGLING) |
3416d90b FF |
2353 | { |
2354 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
2355 | } | |
2356 | #endif | |
2357 | } | |
8357834f JK |
2358 | else |
2359 | n_opt_found = 1; | |
ec8ceca3 JG |
2360 | } |
2361 | break; | |
2362 | ||
bcbf9559 JG |
2363 | /* The following symbol types can be ignored. */ |
2364 | case N_OBJ: /* Solaris 2: Object file dir and name */ | |
bcbf9559 JG |
2365 | /* N_UNDF: Solaris 2: file separator mark */ |
2366 | /* N_UNDF: -- we will never encounter it, since we only process one | |
2367 | file's symbols at once. */ | |
4c7c6bab JG |
2368 | case N_ENDM: /* Solaris 2: End of module */ |
2369 | case N_MAIN: /* Name of main routine. */ | |
9342ecb9 | 2370 | break; |
bd5635a1 | 2371 | } |
7e258d18 | 2372 | |
d719efc6 DP |
2373 | /* Special GNU C extension for referencing names. */ |
2374 | if (name[0] == '#') | |
2375 | { | |
2376 | /* Initialize symbol reference names and determine if this is | |
2377 | a definition. If symbol reference is being defined, go | |
2378 | ahead and add it. Otherwise, just return sym. */ | |
2379 | char *s; | |
2380 | int refnum; | |
b303e105 JL |
2381 | extern int symbol_reference_defined PARAMS ((char **)); |
2382 | extern void ref_add PARAMS ((int, struct symbol *, char *, CORE_ADDR)); | |
2383 | extern struct symbol * ref_search PARAMS ((int)); | |
d719efc6 DP |
2384 | |
2385 | /* If defined, store away a pointer to the symbol; | |
2386 | we'll use it later when we resolve references in | |
2387 | "resolve_symbol_reference". */ | |
2388 | s = name; | |
2389 | if (refnum = symbol_reference_defined (&s), refnum) | |
2390 | if (!ref_search (refnum)) | |
2391 | ref_add (refnum, 0, name, valu); | |
2392 | name = s; /* Advance past refid. */ | |
2393 | } | |
2394 | ||
2395 | ||
7e258d18 | 2396 | previous_stab_code = type; |
bd5635a1 RP |
2397 | } |
2398 | \f | |
2b576293 C |
2399 | /* FIXME: The only difference between this and elfstab_build_psymtabs |
2400 | is the call to install_minimal_symbols for elf, and the support for | |
2401 | split sections. If the differences are really that small, the code | |
2402 | should be shared. */ | |
965a5c32 | 2403 | |
b5b186a2 SS |
2404 | /* Scan and build partial symbols for an coff symbol file. |
2405 | The coff file has already been processed to get its minimal symbols. | |
2406 | ||
2407 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2408 | rolled into one. | |
2409 | ||
2410 | OBJFILE is the object file we are reading symbols from. | |
2411 | ADDR is the address relative to which the symbols are (e.g. | |
2412 | the base address of the text segment). | |
2413 | MAINLINE is true if we are reading the main symbol | |
2414 | table (as opposed to a shared lib or dynamically loaded file). | |
2b576293 C |
2415 | TEXTADDR is the address of the text section. |
2416 | TEXTSIZE is the size of the text section. | |
2417 | STABSECTS is the list of .stab sections in OBJFILE. | |
b5b186a2 SS |
2418 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
2419 | .stabstr section exists. | |
2420 | ||
2421 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
2422 | adjusted for coff details. */ | |
2423 | ||
2424 | void | |
2425 | coffstab_build_psymtabs (objfile, section_offsets, mainline, | |
2b576293 | 2426 | textaddr, textsize, stabsects, |
b5b186a2 SS |
2427 | stabstroffset, stabstrsize) |
2428 | struct objfile *objfile; | |
2429 | struct section_offsets *section_offsets; | |
2430 | int mainline; | |
2b576293 C |
2431 | CORE_ADDR textaddr; |
2432 | unsigned int textsize; | |
2433 | struct stab_section_list *stabsects; | |
b5b186a2 SS |
2434 | file_ptr stabstroffset; |
2435 | unsigned int stabstrsize; | |
2436 | { | |
2437 | int val; | |
2438 | bfd *sym_bfd = objfile->obfd; | |
2439 | char *name = bfd_get_filename (sym_bfd); | |
2440 | struct dbx_symfile_info *info; | |
2b576293 | 2441 | unsigned int stabsize; |
b5b186a2 SS |
2442 | |
2443 | /* There is already a dbx_symfile_info allocated by our caller. | |
2444 | It might even contain some info from the coff symtab to help us. */ | |
609fd033 | 2445 | info = objfile->sym_stab_info; |
b5b186a2 | 2446 | |
2b576293 C |
2447 | DBX_TEXT_ADDR (objfile) = textaddr; |
2448 | DBX_TEXT_SIZE (objfile) = textsize; | |
b5b186a2 SS |
2449 | |
2450 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
2451 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; | |
b5b186a2 | 2452 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
b5b186a2 SS |
2453 | |
2454 | if (stabstrsize > bfd_get_size (sym_bfd)) | |
2455 | error ("ridiculous string table size: %d bytes", stabstrsize); | |
2456 | DBX_STRINGTAB (objfile) = (char *) | |
2457 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
94f5a25f | 2458 | OBJSTAT (objfile, sz_strtab += stabstrsize+1); |
b5b186a2 SS |
2459 | |
2460 | /* Now read in the string table in one big gulp. */ | |
2461 | ||
2462 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
2463 | if (val < 0) | |
2464 | perror_with_name (name); | |
2465 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
2466 | if (val != stabstrsize) | |
2467 | perror_with_name (name); | |
2468 | ||
2469 | stabsread_new_init (); | |
2470 | buildsym_new_init (); | |
2471 | free_header_files (); | |
2472 | init_header_files (); | |
2473 | ||
2474 | processing_acc_compilation = 1; | |
2475 | ||
2476 | /* In a coff file, we've already installed the minimal symbols that came | |
2477 | from the coff (non-stab) symbol table, so always act like an | |
2478 | incremental load here. */ | |
2b576293 C |
2479 | if (stabsects->next == NULL) |
2480 | { | |
2481 | stabsize = bfd_section_size (sym_bfd, stabsects->section); | |
2482 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
2483 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
2484 | } | |
2485 | else | |
2486 | { | |
2487 | struct stab_section_list *stabsect; | |
2488 | ||
2489 | DBX_SYMCOUNT (objfile) = 0; | |
2490 | for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next) | |
2491 | { | |
2492 | stabsize = bfd_section_size (sym_bfd, stabsect->section); | |
2493 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); | |
2494 | } | |
2495 | ||
2496 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
2497 | ||
2498 | symbuf_sections = stabsects->next; | |
2499 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section); | |
2500 | symbuf_read = 0; | |
2501 | } | |
2502 | ||
b5b186a2 SS |
2503 | dbx_symfile_read (objfile, section_offsets, 0); |
2504 | } | |
2505 | \f | |
9342ecb9 JG |
2506 | /* Scan and build partial symbols for an ELF symbol file. |
2507 | This ELF file has already been processed to get its minimal symbols, | |
2508 | and any DWARF symbols that were in it. | |
2509 | ||
2510 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2511 | rolled into one. | |
2512 | ||
2513 | OBJFILE is the object file we are reading symbols from. | |
2514 | ADDR is the address relative to which the symbols are (e.g. | |
2515 | the base address of the text segment). | |
2516 | MAINLINE is true if we are reading the main symbol | |
2517 | table (as opposed to a shared lib or dynamically loaded file). | |
2518 | STABOFFSET and STABSIZE define the location in OBJFILE where the .stab | |
2519 | section exists. | |
2520 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
2521 | .stabstr section exists. | |
2522 | ||
2523 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
2524 | adjusted for elf details. */ | |
2525 | ||
2526 | void | |
1aed6766 | 2527 | elfstab_build_psymtabs (objfile, section_offsets, mainline, |
9342ecb9 | 2528 | staboffset, stabsize, |
1aed6766 SG |
2529 | stabstroffset, stabstrsize) |
2530 | struct objfile *objfile; | |
2531 | struct section_offsets *section_offsets; | |
2532 | int mainline; | |
51b80b00 | 2533 | file_ptr staboffset; |
1aed6766 | 2534 | unsigned int stabsize; |
51b80b00 | 2535 | file_ptr stabstroffset; |
1aed6766 | 2536 | unsigned int stabstrsize; |
9342ecb9 JG |
2537 | { |
2538 | int val; | |
2539 | bfd *sym_bfd = objfile->obfd; | |
2540 | char *name = bfd_get_filename (sym_bfd); | |
2541 | struct dbx_symfile_info *info; | |
2b576293 | 2542 | asection *text_sect; |
9342ecb9 | 2543 | |
2af231b8 JG |
2544 | /* There is already a dbx_symfile_info allocated by our caller. |
2545 | It might even contain some info from the ELF symtab to help us. */ | |
609fd033 | 2546 | info = objfile->sym_stab_info; |
9342ecb9 | 2547 | |
2b576293 C |
2548 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
2549 | if (!text_sect) | |
9342ecb9 | 2550 | error ("Can't find .text section in symbol file"); |
2b576293 C |
2551 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
2552 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
9342ecb9 JG |
2553 | |
2554 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
2555 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; | |
2556 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
2557 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; | |
2558 | DBX_SYMTAB_OFFSET (objfile) = staboffset; | |
2559 | ||
996ccb30 | 2560 | if (stabstrsize > bfd_get_size (sym_bfd)) |
9342ecb9 JG |
2561 | error ("ridiculous string table size: %d bytes", stabstrsize); |
2562 | DBX_STRINGTAB (objfile) = (char *) | |
2563 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
94f5a25f | 2564 | OBJSTAT (objfile, sz_strtab += stabstrsize+1); |
9342ecb9 JG |
2565 | |
2566 | /* Now read in the string table in one big gulp. */ | |
2567 | ||
2c7ab4ca | 2568 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); |
9342ecb9 JG |
2569 | if (val < 0) |
2570 | perror_with_name (name); | |
2571 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
2572 | if (val != stabstrsize) | |
2573 | perror_with_name (name); | |
2574 | ||
3416d90b | 2575 | stabsread_new_init (); |
9342ecb9 JG |
2576 | buildsym_new_init (); |
2577 | free_header_files (); | |
2578 | init_header_files (); | |
2579 | install_minimal_symbols (objfile); | |
2580 | ||
2581 | processing_acc_compilation = 1; | |
2582 | ||
2583 | /* In an elf file, we've already installed the minimal symbols that came | |
2584 | from the elf (non-stab) symbol table, so always act like an | |
2585 | incremental load here. */ | |
2af231b8 JG |
2586 | dbx_symfile_read (objfile, section_offsets, 0); |
2587 | } | |
2588 | \f | |
a66e8382 SG |
2589 | /* Scan and build partial symbols for a file with special sections for stabs |
2590 | and stabstrings. The file has already been processed to get its minimal | |
2591 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
2592 | ||
2593 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2594 | rolled into one. | |
2595 | ||
2596 | OBJFILE is the object file we are reading symbols from. | |
2597 | ADDR is the address relative to which the symbols are (e.g. the base address | |
2598 | of the text segment). | |
2599 | MAINLINE is true if we are reading the main symbol table (as opposed to a | |
2600 | shared lib or dynamically loaded file). | |
2601 | STAB_NAME is the name of the section that contains the stabs. | |
2602 | STABSTR_NAME is the name of the section that contains the stab strings. | |
2603 | ||
2604 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read. */ | |
2605 | ||
2606 | void | |
2607 | stabsect_build_psymtabs (objfile, section_offsets, mainline, stab_name, | |
320f93f7 | 2608 | stabstr_name, text_name) |
a66e8382 SG |
2609 | struct objfile *objfile; |
2610 | struct section_offsets *section_offsets; | |
2611 | int mainline; | |
2612 | char *stab_name; | |
2613 | char *stabstr_name; | |
320f93f7 | 2614 | char *text_name; |
a66e8382 SG |
2615 | { |
2616 | int val; | |
2617 | bfd *sym_bfd = objfile->obfd; | |
2618 | char *name = bfd_get_filename (sym_bfd); | |
2619 | asection *stabsect; | |
2620 | asection *stabstrsect; | |
2b576293 | 2621 | asection *text_sect; |
a66e8382 SG |
2622 | |
2623 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
2624 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
2625 | ||
2626 | if (!stabsect) | |
2627 | return; | |
2628 | ||
2629 | if (!stabstrsect) | |
2630 | error ("stabsect_build_psymtabs: Found stabs (%s), but not string section (%s)", | |
2631 | stab_name, stabstr_name); | |
2632 | ||
bfe2f12b | 2633 | objfile->sym_stab_info = (PTR) xmalloc (sizeof (struct dbx_symfile_info)); |
609fd033 | 2634 | memset (objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); |
a66e8382 | 2635 | |
2b576293 C |
2636 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); |
2637 | if (!text_sect) | |
320f93f7 | 2638 | error ("Can't find %s section in symbol file", text_name); |
2b576293 C |
2639 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
2640 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
a66e8382 SG |
2641 | |
2642 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); | |
2643 | DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect) | |
2644 | / DBX_SYMBOL_SIZE (objfile); | |
2645 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect); | |
2646 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING INSIDE BFD DATA STRUCTURES */ | |
2647 | ||
2648 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
2649 | error ("ridiculous string table size: %d bytes", DBX_STRINGTAB_SIZE (objfile)); | |
2650 | DBX_STRINGTAB (objfile) = (char *) | |
2651 | obstack_alloc (&objfile->psymbol_obstack, DBX_STRINGTAB_SIZE (objfile) + 1); | |
94f5a25f | 2652 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); |
a66e8382 SG |
2653 | |
2654 | /* Now read in the string table in one big gulp. */ | |
2655 | ||
2656 | val = bfd_get_section_contents (sym_bfd, /* bfd */ | |
2657 | stabstrsect, /* bfd section */ | |
2658 | DBX_STRINGTAB (objfile), /* input buffer */ | |
2659 | 0, /* offset into section */ | |
2660 | DBX_STRINGTAB_SIZE (objfile)); /* amount to read */ | |
2661 | ||
2662 | if (!val) | |
2663 | perror_with_name (name); | |
2664 | ||
2665 | stabsread_new_init (); | |
2666 | buildsym_new_init (); | |
2667 | free_header_files (); | |
2668 | init_header_files (); | |
2669 | install_minimal_symbols (objfile); | |
2670 | ||
2671 | /* Now, do an incremental load */ | |
2672 | ||
2673 | processing_acc_compilation = 1; | |
2674 | dbx_symfile_read (objfile, section_offsets, 0); | |
2675 | } | |
2676 | \f | |
80d68b1d FF |
2677 | static struct sym_fns aout_sym_fns = |
2678 | { | |
0eed42de | 2679 | bfd_target_aout_flavour, |
80d68b1d FF |
2680 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2681 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2682 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2683 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
e74acce4 MA |
2684 | default_symfile_offsets, |
2685 | /* sym_offsets: parse user's offsets to internal form */ | |
80d68b1d FF |
2686 | NULL /* next: pointer to next struct sym_fns */ |
2687 | }; | |
bd5635a1 RP |
2688 | |
2689 | void | |
2690 | _initialize_dbxread () | |
2691 | { | |
bd5635a1 | 2692 | add_symtab_fns(&aout_sym_fns); |
bd5635a1 | 2693 | } |