Commit | Line | Data |
---|---|---|
bd5635a1 | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
65ce5df4 JG |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993 |
3 | Free Software Foundation, Inc. | |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
c3a21801 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
c3a21801 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
c3a21801 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
c3a21801 JG |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
9404978d MT |
20 | |
21 | /* This module provides three functions: dbx_symfile_init, | |
22 | which initializes to read a symbol file; dbx_new_init, which | |
23 | discards existing cached information when all symbols are being | |
24 | discarded; and dbx_symfile_read, which reads a symbol table | |
25 | from a file. | |
26 | ||
27 | dbx_symfile_read only does the minimum work necessary for letting the | |
28 | user "name" things symbolically; it does not read the entire symtab. | |
29 | Instead, it reads the external and static symbols and puts them in partial | |
30 | symbol tables. When more extensive information is requested of a | |
31 | file, the corresponding partial symbol table is mutated into a full | |
32 | fledged symbol table by going back and reading the symbols | |
33 | for real. dbx_psymtab_to_symtab() is the function that does this */ | |
bd5635a1 | 34 | |
bd5635a1 | 35 | #include "defs.h" |
318bf84f | 36 | #include <string.h> |
bd5635a1 | 37 | |
9342ecb9 | 38 | #if defined(USG) || defined(__CYGNUSCLIB__) |
bd5635a1 RP |
39 | #include <sys/types.h> |
40 | #include <fcntl.h> | |
41 | #define L_SET 0 | |
42 | #define L_INCR 1 | |
43 | #endif | |
44 | ||
afe4ca15 JG |
45 | #include <obstack.h> |
46 | #include <sys/param.h> | |
021959e2 | 47 | #ifndef NO_SYS_FILE |
afe4ca15 | 48 | #include <sys/file.h> |
021959e2 | 49 | #endif |
afe4ca15 | 50 | #include <sys/stat.h> |
bd5635a1 | 51 | #include <ctype.h> |
afe4ca15 JG |
52 | #include "symtab.h" |
53 | #include "breakpoint.h" | |
54 | #include "command.h" | |
55 | #include "target.h" | |
56 | #include "gdbcore.h" /* for bfd stuff */ | |
ac88ca20 | 57 | #include "libbfd.h" /* FIXME Secret internal BFD stuff (bfd_read) */ |
afe4ca15 JG |
58 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
59 | #include "symfile.h" | |
3624c875 | 60 | #include "objfiles.h" |
c0302457 | 61 | #include "buildsym.h" |
3416d90b | 62 | #include "stabsread.h" |
2af231b8 | 63 | #include "gdb-stabs.h" |
3416d90b | 64 | #include "demangle.h" |
51b80b00 FF |
65 | #include "language.h" /* Needed inside partial-stab.h */ |
66 | #include "complaints.h" | |
afe4ca15 | 67 | |
7e258d18 PB |
68 | #include "aout/aout64.h" |
69 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */ | |
bd5635a1 | 70 | |
4a35d6e9 FF |
71 | /* Each partial symbol table entry contains a pointer to private data for the |
72 | read_symtab() function to use when expanding a partial symbol table entry | |
73 | to a full symbol table entry. | |
74 | ||
75 | For dbxread this structure contains the offset within the file symbol table | |
76 | of first local symbol for this file, and length (in bytes) of the section | |
77 | of the symbol table devoted to this file's symbols (actually, the section | |
9342ecb9 JG |
78 | bracketed may contain more than just this file's symbols). It also contains |
79 | further information needed to locate the symbols if they are in an ELF file. | |
80 | ||
81 | If ldsymlen is 0, the only reason for this thing's existence is the | |
82 | dependency list. Nothing else will happen when it is read in. */ | |
4a35d6e9 FF |
83 | |
84 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) | |
85 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
9342ecb9 JG |
86 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) |
87 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
88 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
89 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
90 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
4a35d6e9 FF |
91 | |
92 | struct symloc { | |
93 | int ldsymoff; | |
94 | int ldsymlen; | |
9342ecb9 JG |
95 | int symbol_size; |
96 | int symbol_offset; | |
97 | int string_offset; | |
98 | int file_string_offset; | |
4a35d6e9 FF |
99 | }; |
100 | ||
bd5635a1 RP |
101 | /* Macro to determine which symbols to ignore when reading the first symbol |
102 | of a file. Some machines override this definition. */ | |
103 | #ifndef IGNORE_SYMBOL | |
104 | /* This code is used on Ultrix systems. Ignore it */ | |
105 | #define IGNORE_SYMBOL(type) (type == (int)N_NSYMS) | |
106 | #endif | |
107 | ||
108 | /* Macro for name of symbol to indicate a file compiled with gcc. */ | |
109 | #ifndef GCC_COMPILED_FLAG_SYMBOL | |
110 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." | |
111 | #endif | |
112 | ||
0cf9329b PB |
113 | /* Macro for name of symbol to indicate a file compiled with gcc2. */ |
114 | #ifndef GCC2_COMPILED_FLAG_SYMBOL | |
115 | #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled." | |
116 | #endif | |
117 | ||
bd5635a1 RP |
118 | /* Define this as 1 if a pcc declaration of a char or short argument |
119 | gives the correct address. Otherwise assume pcc gives the | |
120 | address of the corresponding int, which is not the same on a | |
121 | big-endian machine. */ | |
122 | ||
123 | #ifndef BELIEVE_PCC_PROMOTION | |
124 | #define BELIEVE_PCC_PROMOTION 0 | |
125 | #endif | |
c0302457 | 126 | |
2e4964ad FF |
127 | /* Remember what we deduced to be the source language of this psymtab. */ |
128 | ||
129 | static enum language psymtab_language = language_unknown; | |
130 | ||
bd5635a1 RP |
131 | /* Nonzero means give verbose info on gdb action. From main.c. */ |
132 | extern int info_verbose; | |
133 | ||
7d9884b9 | 134 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
bd5635a1 | 135 | |
c0302457 | 136 | static bfd *symfile_bfd; |
bd5635a1 | 137 | |
afe4ca15 JG |
138 | /* The size of each symbol in the symbol file (in external form). |
139 | This is set by dbx_symfile_read when building psymtabs, and by | |
140 | dbx_psymtab_to_symtab when building symtabs. */ | |
141 | ||
142 | static unsigned symbol_size; | |
143 | ||
9342ecb9 JG |
144 | /* This is the offset of the symbol table in the executable file */ |
145 | static unsigned symbol_table_offset; | |
146 | ||
147 | /* This is the offset of the string table in the executable file */ | |
148 | static unsigned string_table_offset; | |
149 | ||
150 | /* For elf+stab executables, the n_strx field is not a simple index | |
151 | into the string table. Instead, each .o file has a base offset | |
152 | in the string table, and the associated symbols contain offsets | |
153 | from this base. The following two variables contain the base | |
154 | offset for the current and next .o files. */ | |
155 | static unsigned int file_string_table_offset; | |
156 | static unsigned int next_file_string_table_offset; | |
157 | ||
bd5635a1 RP |
158 | /* Complaints about the symbols we have encountered. */ |
159 | ||
bd5635a1 RP |
160 | struct complaint lbrac_complaint = |
161 | {"bad block start address patched", 0, 0}; | |
162 | ||
bd5635a1 RP |
163 | struct complaint string_table_offset_complaint = |
164 | {"bad string table offset in symbol %d", 0, 0}; | |
165 | ||
166 | struct complaint unknown_symtype_complaint = | |
0c4d2cc2 | 167 | {"unknown symbol type %s", 0, 0}; |
bd5635a1 | 168 | |
65ce5df4 JG |
169 | struct complaint unknown_symchar_complaint = |
170 | {"unknown symbol type character `%c'", 0, 0}; | |
171 | ||
bd5635a1 RP |
172 | struct complaint lbrac_rbrac_complaint = |
173 | {"block start larger than block end", 0, 0}; | |
7d9884b9 JG |
174 | |
175 | struct complaint lbrac_unmatched_complaint = | |
176 | {"unmatched N_LBRAC before symtab pos %d", 0, 0}; | |
177 | ||
178 | struct complaint lbrac_mismatch_complaint = | |
179 | {"N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", 0, 0}; | |
9342ecb9 JG |
180 | |
181 | struct complaint repeated_header_complaint = | |
182 | {"\"repeated\" header file not previously seen, at symtab pos %d", 0, 0}; | |
183 | ||
184 | struct complaint repeated_header_name_complaint = | |
185 | {"\"repeated\" header file not previously seen, named %s", 0, 0}; | |
bd5635a1 | 186 | \f |
bd5635a1 RP |
187 | /* During initial symbol readin, we need to have a structure to keep |
188 | track of which psymtabs have which bincls in them. This structure | |
189 | is used during readin to setup the list of dependencies within each | |
190 | partial symbol table. */ | |
191 | ||
192 | struct header_file_location | |
193 | { | |
194 | char *name; /* Name of header file */ | |
195 | int instance; /* See above */ | |
196 | struct partial_symtab *pst; /* Partial symtab that has the | |
197 | BINCL/EINCL defs for this file */ | |
198 | }; | |
199 | ||
200 | /* The actual list and controling variables */ | |
201 | static struct header_file_location *bincl_list, *next_bincl; | |
202 | static int bincls_allocated; | |
203 | ||
021959e2 JG |
204 | /* Local function prototypes */ |
205 | ||
206 | static void | |
80d68b1d FF |
207 | free_header_files PARAMS ((void)); |
208 | ||
209 | static void | |
210 | init_header_files PARAMS ((void)); | |
021959e2 JG |
211 | |
212 | static struct pending * | |
213 | copy_pending PARAMS ((struct pending *, int, struct pending *)); | |
214 | ||
574dac8e JK |
215 | static void |
216 | read_ofile_symtab PARAMS ((struct partial_symtab *)); | |
021959e2 JG |
217 | |
218 | static void | |
219 | dbx_psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
220 | ||
221 | static void | |
4c07f28d | 222 | dbx_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *)); |
021959e2 JG |
223 | |
224 | static void | |
2af231b8 JG |
225 | read_dbx_symtab PARAMS ((struct section_offsets *, struct objfile *, |
226 | CORE_ADDR, int)); | |
021959e2 JG |
227 | |
228 | static void | |
229 | free_bincl_list PARAMS ((struct objfile *)); | |
230 | ||
231 | static struct partial_symtab * | |
232 | find_corresponding_bincl_psymtab PARAMS ((char *, int)); | |
233 | ||
234 | static void | |
235 | add_bincl_to_list PARAMS ((struct partial_symtab *, char *, int)); | |
236 | ||
237 | static void | |
238 | init_bincl_list PARAMS ((int, struct objfile *)); | |
239 | ||
240 | static void | |
3624c875 | 241 | init_psymbol_list PARAMS ((struct objfile *)); |
021959e2 JG |
242 | |
243 | static char * | |
244 | dbx_next_symbol_text PARAMS ((void)); | |
245 | ||
246 | static void | |
247 | fill_symbuf PARAMS ((bfd *)); | |
248 | ||
249 | static void | |
80d68b1d FF |
250 | dbx_symfile_init PARAMS ((struct objfile *)); |
251 | ||
252 | static void | |
253 | dbx_new_init PARAMS ((struct objfile *)); | |
021959e2 JG |
254 | |
255 | static void | |
2af231b8 | 256 | dbx_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); |
021959e2 JG |
257 | |
258 | static void | |
80d68b1d | 259 | dbx_symfile_finish PARAMS ((struct objfile *)); |
021959e2 JG |
260 | |
261 | static void | |
262 | record_minimal_symbol PARAMS ((char *, CORE_ADDR, int, struct objfile *)); | |
263 | ||
264 | static void | |
265 | add_new_header_file PARAMS ((char *, int)); | |
266 | ||
267 | static void | |
268 | add_old_header_file PARAMS ((char *, int)); | |
269 | ||
270 | static void | |
271 | add_this_object_header_file PARAMS ((int)); | |
272 | ||
80d68b1d | 273 | /* Free up old header file tables */ |
bd5635a1 | 274 | |
021959e2 | 275 | static void |
80d68b1d | 276 | free_header_files () |
bd5635a1 RP |
277 | { |
278 | register int i; | |
bd5635a1 | 279 | |
80d68b1d FF |
280 | if (header_files != NULL) |
281 | { | |
282 | for (i = 0; i < n_header_files; i++) | |
283 | { | |
284 | free (header_files[i].name); | |
285 | } | |
ac88ca20 | 286 | free ((PTR)header_files); |
80d68b1d FF |
287 | header_files = NULL; |
288 | n_header_files = 0; | |
289 | } | |
290 | if (this_object_header_files) | |
291 | { | |
ac88ca20 | 292 | free ((PTR)this_object_header_files); |
80d68b1d FF |
293 | this_object_header_files = NULL; |
294 | } | |
295 | n_allocated_header_files = 0; | |
296 | n_allocated_this_object_header_files = 0; | |
297 | } | |
298 | ||
299 | /* Allocate new header file tables */ | |
300 | ||
301 | static void | |
302 | init_header_files () | |
303 | { | |
bd5635a1 | 304 | n_header_files = 0; |
80d68b1d FF |
305 | n_allocated_header_files = 10; |
306 | header_files = (struct header_file *) | |
307 | xmalloc (10 * sizeof (struct header_file)); | |
bd5635a1 RP |
308 | |
309 | n_allocated_this_object_header_files = 10; | |
310 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); | |
311 | } | |
312 | ||
bd5635a1 RP |
313 | /* Add header file number I for this object file |
314 | at the next successive FILENUM. */ | |
315 | ||
316 | static void | |
317 | add_this_object_header_file (i) | |
318 | int i; | |
319 | { | |
320 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
321 | { | |
322 | n_allocated_this_object_header_files *= 2; | |
323 | this_object_header_files | |
021959e2 | 324 | = (int *) xrealloc ((char *) this_object_header_files, |
bd5635a1 RP |
325 | n_allocated_this_object_header_files * sizeof (int)); |
326 | } | |
327 | ||
328 | this_object_header_files[n_this_object_header_files++] = i; | |
329 | } | |
330 | ||
331 | /* Add to this file an "old" header file, one already seen in | |
332 | a previous object file. NAME is the header file's name. | |
333 | INSTANCE is its instance code, to select among multiple | |
334 | symbol tables for the same header file. */ | |
335 | ||
336 | static void | |
337 | add_old_header_file (name, instance) | |
338 | char *name; | |
339 | int instance; | |
340 | { | |
341 | register struct header_file *p = header_files; | |
342 | register int i; | |
343 | ||
344 | for (i = 0; i < n_header_files; i++) | |
2e4964ad | 345 | if (STREQ (p[i].name, name) && instance == p[i].instance) |
bd5635a1 RP |
346 | { |
347 | add_this_object_header_file (i); | |
348 | return; | |
349 | } | |
51b80b00 | 350 | complain (&repeated_header_complaint, symnum); |
9342ecb9 | 351 | complain (&repeated_header_name_complaint, name); |
bd5635a1 RP |
352 | } |
353 | ||
354 | /* Add to this file a "new" header file: definitions for its types follow. | |
355 | NAME is the header file's name. | |
356 | Most often this happens only once for each distinct header file, | |
357 | but not necessarily. If it happens more than once, INSTANCE has | |
358 | a different value each time, and references to the header file | |
359 | use INSTANCE values to select among them. | |
360 | ||
361 | dbx output contains "begin" and "end" markers for each new header file, | |
362 | but at this level we just need to know which files there have been; | |
363 | so we record the file when its "begin" is seen and ignore the "end". */ | |
364 | ||
365 | static void | |
366 | add_new_header_file (name, instance) | |
367 | char *name; | |
368 | int instance; | |
369 | { | |
370 | register int i; | |
bd5635a1 RP |
371 | |
372 | /* Make sure there is room for one more header file. */ | |
373 | ||
374 | if (n_header_files == n_allocated_header_files) | |
375 | { | |
376 | n_allocated_header_files *= 2; | |
377 | header_files = (struct header_file *) | |
021959e2 JG |
378 | xrealloc ((char *) header_files, |
379 | (n_allocated_header_files * sizeof (struct header_file))); | |
bd5635a1 RP |
380 | } |
381 | ||
382 | /* Create an entry for this header file. */ | |
383 | ||
384 | i = n_header_files++; | |
385 | header_files[i].name = savestring (name, strlen(name)); | |
386 | header_files[i].instance = instance; | |
387 | header_files[i].length = 10; | |
388 | header_files[i].vector | |
389 | = (struct type **) xmalloc (10 * sizeof (struct type *)); | |
4ed3a9ea | 390 | memset (header_files[i].vector, 0, 10 * sizeof (struct type *)); |
bd5635a1 RP |
391 | |
392 | add_this_object_header_file (i); | |
393 | } | |
394 | ||
bd5635a1 RP |
395 | #if 0 |
396 | static struct type ** | |
397 | explicit_lookup_type (real_filenum, index) | |
398 | int real_filenum, index; | |
399 | { | |
400 | register struct header_file *f = &header_files[real_filenum]; | |
401 | ||
402 | if (index >= f->length) | |
403 | { | |
404 | f->length *= 2; | |
405 | f->vector = (struct type **) | |
406 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
407 | bzero (&f->vector[f->length / 2], | |
408 | f->length * sizeof (struct type *) / 2); | |
409 | } | |
410 | return &f->vector[index]; | |
411 | } | |
412 | #endif | |
413 | \f | |
9bba3334 | 414 | static void |
021959e2 | 415 | record_minimal_symbol (name, address, type, objfile) |
bd5635a1 RP |
416 | char *name; |
417 | CORE_ADDR address; | |
418 | int type; | |
021959e2 | 419 | struct objfile *objfile; |
bd5635a1 | 420 | { |
021959e2 | 421 | enum minimal_symbol_type ms_type; |
0c4d2cc2 JG |
422 | |
423 | switch (type &~ N_EXT) { | |
021959e2 JG |
424 | case N_TEXT: ms_type = mst_text; break; |
425 | case N_DATA: ms_type = mst_data; break; | |
426 | case N_BSS: ms_type = mst_bss; break; | |
427 | case N_ABS: ms_type = mst_abs; break; | |
0c4d2cc2 | 428 | #ifdef N_SETV |
021959e2 | 429 | case N_SETV: ms_type = mst_data; break; |
0c4d2cc2 | 430 | #endif |
021959e2 | 431 | default: ms_type = mst_unknown; break; |
0c4d2cc2 | 432 | } |
bd5635a1 | 433 | |
021959e2 JG |
434 | prim_record_minimal_symbol (obsavestring (name, strlen (name), &objfile -> symbol_obstack), |
435 | address, ms_type); | |
bd5635a1 RP |
436 | } |
437 | \f | |
438 | /* Scan and build partial symbols for a symbol file. | |
439 | We have been initialized by a call to dbx_symfile_init, which | |
3624c875 FF |
440 | put all the relevant info into a "struct dbx_symfile_info", |
441 | hung off the objfile structure. | |
bd5635a1 | 442 | |
2af231b8 JG |
443 | SECTION_OFFSETS contains offsets relative to which the symbols in the |
444 | various sections are (depending where the sections were actually loaded). | |
bd5635a1 RP |
445 | MAINLINE is true if we are reading the main symbol |
446 | table (as opposed to a shared lib or dynamically loaded file). */ | |
447 | ||
9bba3334 | 448 | static void |
2af231b8 | 449 | dbx_symfile_read (objfile, section_offsets, mainline) |
80d68b1d | 450 | struct objfile *objfile; |
2af231b8 | 451 | struct section_offsets *section_offsets; |
bd5635a1 RP |
452 | int mainline; /* FIXME comments above */ |
453 | { | |
80d68b1d | 454 | bfd *sym_bfd; |
bd5635a1 | 455 | int val; |
bd5635a1 | 456 | |
80d68b1d | 457 | sym_bfd = objfile->obfd; |
3624c875 | 458 | val = bfd_seek (objfile->obfd, DBX_SYMTAB_OFFSET (objfile), L_SET); |
bd5635a1 | 459 | if (val < 0) |
80d68b1d | 460 | perror_with_name (objfile->name); |
bd5635a1 | 461 | |
66eeea27 | 462 | /* If we are reinitializing, or if we have never loaded syms yet, init */ |
80d68b1d | 463 | if (mainline || objfile->global_psymbols.size == 0 || objfile->static_psymbols.size == 0) |
3624c875 | 464 | init_psymbol_list (objfile); |
66eeea27 | 465 | |
9342ecb9 JG |
466 | symbol_size = DBX_SYMBOL_SIZE (objfile); |
467 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
afe4ca15 | 468 | |
bd5635a1 RP |
469 | pending_blocks = 0; |
470 | make_cleanup (really_free_pendings, 0); | |
471 | ||
021959e2 JG |
472 | init_minimal_symbol_collection (); |
473 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
474 | |
475 | /* Now that the symbol table data of the executable file are all in core, | |
476 | process them and define symbols accordingly. */ | |
477 | ||
2af231b8 | 478 | read_dbx_symtab (section_offsets, objfile, |
3624c875 FF |
479 | bfd_section_vma (sym_bfd, DBX_TEXT_SECT (objfile)), |
480 | bfd_section_size (sym_bfd, DBX_TEXT_SECT (objfile))); | |
bd5635a1 | 481 | |
021959e2 JG |
482 | /* Install any minimal symbols that have been collected as the current |
483 | minimal symbols for this objfile. */ | |
bd5635a1 | 484 | |
80d68b1d | 485 | install_minimal_symbols (objfile); |
bd5635a1 | 486 | |
021959e2 | 487 | if (!have_partial_symbols ()) { |
9404978d MT |
488 | wrap_here (""); |
489 | printf_filtered ("(no debugging symbols found)..."); | |
490 | wrap_here (""); | |
491 | } | |
bd5635a1 RP |
492 | } |
493 | ||
9404978d MT |
494 | /* Initialize anything that needs initializing when a completely new |
495 | symbol file is specified (not just adding some symbols from another | |
496 | file, e.g. a shared library). */ | |
bd5635a1 | 497 | |
9bba3334 | 498 | static void |
ac88ca20 JG |
499 | dbx_new_init (ignore) |
500 | struct objfile *ignore; | |
bd5635a1 | 501 | { |
3416d90b | 502 | stabsread_new_init (); |
c0302457 | 503 | buildsym_new_init (); |
80d68b1d | 504 | init_header_files (); |
bd5635a1 RP |
505 | } |
506 | ||
507 | ||
508 | /* dbx_symfile_init () | |
509 | is the dbx-specific initialization routine for reading symbols. | |
80d68b1d | 510 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
511 | the BFD for the file whose symbols are being read, and a slot for a pointer |
512 | to "private data" which we fill with goodies. | |
513 | ||
514 | We read the string table into malloc'd space and stash a pointer to it. | |
515 | ||
516 | Since BFD doesn't know how to read debug symbols in a format-independent | |
517 | way (and may never do so...), we have to do it ourselves. We will never | |
518 | be called unless this is an a.out (or very similar) file. | |
519 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
520 | ||
69a272c4 FF |
521 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
522 | ||
9bba3334 | 523 | static void |
80d68b1d FF |
524 | dbx_symfile_init (objfile) |
525 | struct objfile *objfile; | |
bd5635a1 RP |
526 | { |
527 | int val; | |
80d68b1d | 528 | bfd *sym_bfd = objfile->obfd; |
bd5635a1 | 529 | char *name = bfd_get_filename (sym_bfd); |
69a272c4 | 530 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; |
bd5635a1 RP |
531 | |
532 | /* Allocate struct to keep track of the symfile */ | |
ac88ca20 | 533 | objfile->sym_private = (PTR) |
3624c875 | 534 | xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info)); |
bd5635a1 RP |
535 | |
536 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
bd5635a1 RP |
537 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
538 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
040b9597 | 539 | |
bd5635a1 RP |
540 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
541 | ||
784fd92b | 542 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; |
3624c875 FF |
543 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); |
544 | if (!DBX_TEXT_SECT (objfile)) | |
9342ecb9 JG |
545 | error ("Can't find .text section in symbol file"); |
546 | ||
bf18ac80 | 547 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); |
7da1e27d | 548 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); |
9342ecb9 | 549 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; |
3624c875 FF |
550 | |
551 | /* Read the string table and stash it away in the psymbol_obstack. It is | |
552 | only needed as long as we need to expand psymbols into full symbols, | |
553 | so when we blow away the psymbol the string table goes away as well. | |
554 | Note that gdb used to use the results of attempting to malloc the | |
555 | string table, based on the size it read, as a form of sanity check | |
556 | for botched byte swapping, on the theory that a byte swapped string | |
557 | table size would be so totally bogus that the malloc would fail. Now | |
558 | that we put in on the psymbol_obstack, we can't do this since gdb gets | |
559 | a fatal error (out of virtual memory) if the size is bogus. We can | |
69a272c4 FF |
560 | however at least check to see if the size is less than the size of |
561 | the size field itself, or larger than the size of the entire file. | |
562 | Note that all valid string tables have a size greater than zero, since | |
563 | the bytes used to hold the size are included in the count. */ | |
3624c875 | 564 | |
69a272c4 FF |
565 | if (STRING_TABLE_OFFSET == 0) |
566 | { | |
65ce5df4 JG |
567 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET |
568 | will never be zero, even when there is no string table. This | |
569 | would appear to be a bug in bfd. */ | |
69a272c4 FF |
570 | DBX_STRINGTAB_SIZE (objfile) = 0; |
571 | DBX_STRINGTAB (objfile) = NULL; | |
572 | } | |
573 | else | |
574 | { | |
575 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, L_SET); | |
576 | if (val < 0) | |
577 | perror_with_name (name); | |
578 | ||
579 | memset ((PTR) size_temp, 0, sizeof (size_temp)); | |
580 | val = bfd_read ((PTR) size_temp, sizeof (size_temp), 1, sym_bfd); | |
581 | if (val < 0) | |
65ce5df4 JG |
582 | { |
583 | perror_with_name (name); | |
584 | } | |
585 | else if (val == 0) | |
586 | { | |
587 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
588 | EOF if there is no string table, and attempting to read the size | |
589 | from EOF will read zero bytes. */ | |
590 | DBX_STRINGTAB_SIZE (objfile) = 0; | |
591 | DBX_STRINGTAB (objfile) = NULL; | |
592 | } | |
593 | else | |
594 | { | |
595 | /* Read some data that would appear to be the string table size. | |
596 | If there really is a string table, then it is probably the right | |
597 | size. Byteswap if necessary and validate the size. Note that | |
598 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
599 | random data that happened to be at STRING_TABLE_OFFSET, because | |
600 | bfd can't tell us there is no string table, the sanity checks may | |
601 | or may not catch this. */ | |
602 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); | |
603 | ||
604 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) | |
605 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
606 | error ("ridiculous string table size (%d bytes).", | |
607 | DBX_STRINGTAB_SIZE (objfile)); | |
608 | ||
609 | DBX_STRINGTAB (objfile) = | |
610 | (char *) obstack_alloc (&objfile -> psymbol_obstack, | |
611 | DBX_STRINGTAB_SIZE (objfile)); | |
612 | ||
613 | /* Now read in the string table in one big gulp. */ | |
614 | ||
615 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, L_SET); | |
616 | if (val < 0) | |
617 | perror_with_name (name); | |
618 | val = bfd_read (DBX_STRINGTAB (objfile), DBX_STRINGTAB_SIZE (objfile), 1, | |
619 | sym_bfd); | |
620 | if (val != DBX_STRINGTAB_SIZE (objfile)) | |
621 | perror_with_name (name); | |
622 | } | |
69a272c4 | 623 | } |
bd5635a1 | 624 | } |
80d68b1d FF |
625 | |
626 | /* Perform any local cleanups required when we are done with a particular | |
627 | objfile. I.E, we are in the process of discarding all symbol information | |
628 | for an objfile, freeing up all memory held for it, and unlinking the | |
629 | objfile struct from the global list of known objfiles. */ | |
630 | ||
631 | static void | |
632 | dbx_symfile_finish (objfile) | |
633 | struct objfile *objfile; | |
634 | { | |
ac88ca20 | 635 | if (objfile->sym_private != NULL) |
80d68b1d | 636 | { |
ac88ca20 | 637 | mfree (objfile -> md, objfile->sym_private); |
80d68b1d FF |
638 | } |
639 | free_header_files (); | |
640 | } | |
641 | ||
bd5635a1 RP |
642 | \f |
643 | /* Buffer for reading the symbol table entries. */ | |
afe4ca15 | 644 | static struct internal_nlist symbuf[4096]; |
bd5635a1 RP |
645 | static int symbuf_idx; |
646 | static int symbuf_end; | |
647 | ||
9342ecb9 JG |
648 | /* Name of last function encountered. Used in Solaris to approximate |
649 | object file boundaries. */ | |
650 | static char *last_function_name; | |
651 | ||
bd5635a1 RP |
652 | /* The address in memory of the string table of the object file we are |
653 | reading (which might not be the "main" object file, but might be a | |
654 | shared library or some other dynamically loaded thing). This is set | |
655 | by read_dbx_symtab when building psymtabs, and by read_ofile_symtab | |
656 | when building symtabs, and is used only by next_symbol_text. */ | |
657 | static char *stringtab_global; | |
658 | ||
659 | /* Refill the symbol table input buffer | |
660 | and set the variables that control fetching entries from it. | |
661 | Reports an error if no data available. | |
662 | This function can read past the end of the symbol table | |
663 | (into the string table) but this does no harm. */ | |
664 | ||
7d9884b9 JG |
665 | static void |
666 | fill_symbuf (sym_bfd) | |
667 | bfd *sym_bfd; | |
bd5635a1 | 668 | { |
ac88ca20 | 669 | int nbytes = bfd_read ((PTR)symbuf, sizeof (symbuf), 1, sym_bfd); |
bd5635a1 | 670 | if (nbytes < 0) |
7d9884b9 | 671 | perror_with_name (bfd_get_filename (sym_bfd)); |
bd5635a1 RP |
672 | else if (nbytes == 0) |
673 | error ("Premature end of file reading symbol table"); | |
afe4ca15 | 674 | symbuf_end = nbytes / symbol_size; |
bd5635a1 | 675 | symbuf_idx = 0; |
bd5635a1 RP |
676 | } |
677 | ||
7d9884b9 | 678 | #define SWAP_SYMBOL(symp, abfd) \ |
bd5635a1 | 679 | { \ |
7d9884b9 | 680 | (symp)->n_strx = bfd_h_get_32(abfd, \ |
afe4ca15 | 681 | (unsigned char *)&(symp)->n_strx); \ |
7d9884b9 | 682 | (symp)->n_desc = bfd_h_get_16 (abfd, \ |
bd5635a1 | 683 | (unsigned char *)&(symp)->n_desc); \ |
7d9884b9 | 684 | (symp)->n_value = bfd_h_get_32 (abfd, \ |
bd5635a1 RP |
685 | (unsigned char *)&(symp)->n_value); \ |
686 | } | |
687 | ||
688 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
689 | that hasn't been swapped. Swap the symbol at the same time | |
690 | that symbuf_idx is incremented. */ | |
691 | ||
692 | /* dbx allows the text of a symbol name to be continued into the | |
693 | next symbol name! When such a continuation is encountered | |
694 | (a \ at the end of the text of a name) | |
695 | call this function to get the continuation. */ | |
696 | ||
021959e2 | 697 | static char * |
aab77d5f | 698 | dbx_next_symbol_text () |
bd5635a1 RP |
699 | { |
700 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 701 | fill_symbuf (symfile_bfd); |
bd5635a1 | 702 | symnum++; |
7d9884b9 | 703 | SWAP_SYMBOL(&symbuf[symbuf_idx], symfile_bfd); |
9342ecb9 JG |
704 | return symbuf[symbuf_idx++].n_strx + stringtab_global |
705 | + file_string_table_offset; | |
bd5635a1 RP |
706 | } |
707 | \f | |
708 | /* Initializes storage for all of the partial symbols that will be | |
709 | created by read_dbx_symtab and subsidiaries. */ | |
710 | ||
711 | static void | |
3624c875 | 712 | init_psymbol_list (objfile) |
021959e2 | 713 | struct objfile *objfile; |
bd5635a1 RP |
714 | { |
715 | /* Free any previously allocated psymbol lists. */ | |
021959e2 | 716 | if (objfile -> global_psymbols.list) |
ac88ca20 | 717 | mfree (objfile -> md, (PTR)objfile -> global_psymbols.list); |
021959e2 | 718 | if (objfile -> static_psymbols.list) |
ac88ca20 | 719 | mfree (objfile -> md, (PTR)objfile -> static_psymbols.list); |
bd5635a1 RP |
720 | |
721 | /* Current best guess is that there are approximately a twentieth | |
722 | of the total symbols (in a debugging file) are global or static | |
723 | oriented symbols */ | |
3624c875 FF |
724 | objfile -> global_psymbols.size = DBX_SYMCOUNT (objfile) / 10; |
725 | objfile -> static_psymbols.size = DBX_SYMCOUNT (objfile) / 10; | |
021959e2 | 726 | objfile -> global_psymbols.next = objfile -> global_psymbols.list = (struct partial_symbol *) |
318bf84f | 727 | xmmalloc (objfile -> md, objfile -> global_psymbols.size * sizeof (struct partial_symbol)); |
021959e2 | 728 | objfile -> static_psymbols.next = objfile -> static_psymbols.list = (struct partial_symbol *) |
318bf84f | 729 | xmmalloc (objfile -> md, objfile -> static_psymbols.size * sizeof (struct partial_symbol)); |
bd5635a1 RP |
730 | } |
731 | ||
732 | /* Initialize the list of bincls to contain none and have some | |
733 | allocated. */ | |
734 | ||
735 | static void | |
021959e2 | 736 | init_bincl_list (number, objfile) |
bd5635a1 | 737 | int number; |
021959e2 | 738 | struct objfile *objfile; |
bd5635a1 RP |
739 | { |
740 | bincls_allocated = number; | |
741 | next_bincl = bincl_list = (struct header_file_location *) | |
318bf84f | 742 | xmmalloc (objfile -> md, bincls_allocated * sizeof(struct header_file_location)); |
bd5635a1 RP |
743 | } |
744 | ||
745 | /* Add a bincl to the list. */ | |
746 | ||
747 | static void | |
748 | add_bincl_to_list (pst, name, instance) | |
749 | struct partial_symtab *pst; | |
750 | char *name; | |
751 | int instance; | |
752 | { | |
753 | if (next_bincl >= bincl_list + bincls_allocated) | |
754 | { | |
755 | int offset = next_bincl - bincl_list; | |
756 | bincls_allocated *= 2; | |
757 | bincl_list = (struct header_file_location *) | |
318bf84f | 758 | xmrealloc (pst->objfile->md, (char *)bincl_list, |
bd5635a1 RP |
759 | bincls_allocated * sizeof (struct header_file_location)); |
760 | next_bincl = bincl_list + offset; | |
761 | } | |
762 | next_bincl->pst = pst; | |
763 | next_bincl->instance = instance; | |
764 | next_bincl++->name = name; | |
765 | } | |
766 | ||
767 | /* Given a name, value pair, find the corresponding | |
768 | bincl in the list. Return the partial symtab associated | |
769 | with that header_file_location. */ | |
770 | ||
9bba3334 | 771 | static struct partial_symtab * |
bd5635a1 RP |
772 | find_corresponding_bincl_psymtab (name, instance) |
773 | char *name; | |
774 | int instance; | |
775 | { | |
776 | struct header_file_location *bincl; | |
777 | ||
778 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
779 | if (bincl->instance == instance | |
2e4964ad | 780 | && STREQ (name, bincl->name)) |
bd5635a1 RP |
781 | return bincl->pst; |
782 | ||
783 | return (struct partial_symtab *) 0; | |
784 | } | |
785 | ||
786 | /* Free the storage allocated for the bincl list. */ | |
787 | ||
788 | static void | |
021959e2 JG |
789 | free_bincl_list (objfile) |
790 | struct objfile *objfile; | |
bd5635a1 | 791 | { |
ac88ca20 | 792 | mfree (objfile -> md, (PTR)bincl_list); |
bd5635a1 RP |
793 | bincls_allocated = 0; |
794 | } | |
795 | ||
bd5635a1 RP |
796 | /* Given pointers to an a.out symbol table in core containing dbx |
797 | style data, setup partial_symtab's describing each source file for | |
3624c875 FF |
798 | which debugging information is available. |
799 | SYMFILE_NAME is the name of the file we are reading from | |
2af231b8 JG |
800 | and SECTION_OFFSETS is the set of offsets for the various sections |
801 | of the file (a set of zeros if the mainline program). */ | |
bd5635a1 RP |
802 | |
803 | static void | |
2af231b8 JG |
804 | read_dbx_symtab (section_offsets, objfile, text_addr, text_size) |
805 | struct section_offsets *section_offsets; | |
7d9884b9 | 806 | struct objfile *objfile; |
bd5635a1 RP |
807 | CORE_ADDR text_addr; |
808 | int text_size; | |
809 | { | |
ac88ca20 | 810 | register struct internal_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
bd5635a1 | 811 | register char *namestring; |
bd5635a1 RP |
812 | int nsl; |
813 | int past_first_source_file = 0; | |
814 | CORE_ADDR last_o_file_start = 0; | |
815 | struct cleanup *old_chain; | |
7d9884b9 | 816 | bfd *abfd; |
bd5635a1 RP |
817 | |
818 | /* End of the text segment of the executable file. */ | |
819 | CORE_ADDR end_of_text_addr; | |
820 | ||
821 | /* Current partial symtab */ | |
822 | struct partial_symtab *pst; | |
823 | ||
824 | /* List of current psymtab's include files */ | |
825 | char **psymtab_include_list; | |
826 | int includes_allocated; | |
827 | int includes_used; | |
828 | ||
829 | /* Index within current psymtab dependency list */ | |
830 | struct partial_symtab **dependency_list; | |
831 | int dependencies_used, dependencies_allocated; | |
832 | ||
9342ecb9 JG |
833 | /* FIXME. We probably want to change stringtab_global rather than add this |
834 | while processing every symbol entry. FIXME. */ | |
835 | file_string_table_offset = 0; | |
836 | next_file_string_table_offset = 0; | |
837 | ||
3624c875 | 838 | stringtab_global = DBX_STRINGTAB (objfile); |
bd5635a1 RP |
839 | |
840 | pst = (struct partial_symtab *) 0; | |
841 | ||
842 | includes_allocated = 30; | |
843 | includes_used = 0; | |
844 | psymtab_include_list = (char **) alloca (includes_allocated * | |
845 | sizeof (char *)); | |
846 | ||
847 | dependencies_allocated = 30; | |
848 | dependencies_used = 0; | |
849 | dependency_list = | |
850 | (struct partial_symtab **) alloca (dependencies_allocated * | |
851 | sizeof (struct partial_symtab *)); | |
852 | ||
7d9884b9 | 853 | old_chain = make_cleanup (free_objfile, objfile); |
bd5635a1 RP |
854 | |
855 | /* Init bincl list */ | |
021959e2 JG |
856 | init_bincl_list (20, objfile); |
857 | make_cleanup (free_bincl_list, objfile); | |
bd5635a1 | 858 | |
3416d90b | 859 | last_source_file = NULL; |
bd5635a1 RP |
860 | |
861 | #ifdef END_OF_TEXT_DEFAULT | |
862 | end_of_text_addr = END_OF_TEXT_DEFAULT; | |
863 | #else | |
2af231b8 JG |
864 | end_of_text_addr = text_addr + section_offsets->offsets[SECT_OFF_TEXT] |
865 | + text_size; /* Relocate */ | |
bd5635a1 RP |
866 | #endif |
867 | ||
7d9884b9 JG |
868 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ |
869 | abfd = objfile->obfd; | |
bd5635a1 | 870 | symbuf_end = symbuf_idx = 0; |
aab77d5f | 871 | next_symbol_text_func = dbx_next_symbol_text; |
bd5635a1 | 872 | |
3624c875 | 873 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
bd5635a1 RP |
874 | { |
875 | /* Get the symbol for this run and pull out some info */ | |
876 | QUIT; /* allow this to be interruptable */ | |
877 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 878 | fill_symbuf (abfd); |
bd5635a1 RP |
879 | bufp = &symbuf[symbuf_idx++]; |
880 | ||
881 | /* | |
882 | * Special case to speed up readin. | |
883 | */ | |
884 | if (bufp->n_type == (unsigned char)N_SLINE) continue; | |
885 | ||
7d9884b9 | 886 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 RP |
887 | |
888 | /* Ok. There is a lot of code duplicated in the rest of this | |
889 | switch statement (for efficiency reasons). Since I don't | |
890 | like duplicating code, I will do my penance here, and | |
891 | describe the code which is duplicated: | |
892 | ||
893 | *) The assignment to namestring. | |
894 | *) The call to strchr. | |
895 | *) The addition of a partial symbol the the two partial | |
896 | symbol lists. This last is a large section of code, so | |
897 | I've imbedded it in the following macro. | |
898 | */ | |
899 | ||
900 | /* Set namestring based on bufp. If the string table index is invalid, | |
901 | give a fake name, and print a single error message per symbol file read, | |
902 | rather than abort the symbol reading or flood the user with messages. */ | |
9342ecb9 JG |
903 | |
904 | /*FIXME: Too many adds and indirections in here for the inner loop. */ | |
bd5635a1 | 905 | #define SET_NAMESTRING()\ |
9342ecb9 JG |
906 | if (((unsigned)bufp->n_strx + file_string_table_offset) >= \ |
907 | DBX_STRINGTAB_SIZE (objfile)) { \ | |
51b80b00 | 908 | complain (&string_table_offset_complaint, symnum); \ |
bd5635a1 RP |
909 | namestring = "foo"; \ |
910 | } else \ | |
9342ecb9 JG |
911 | namestring = bufp->n_strx + file_string_table_offset + \ |
912 | DBX_STRINGTAB (objfile) | |
bd5635a1 | 913 | |
7e258d18 PB |
914 | #define CUR_SYMBOL_TYPE bufp->n_type |
915 | #define CUR_SYMBOL_VALUE bufp->n_value | |
916 | #define DBXREAD_ONLY | |
2af231b8 JG |
917 | #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\ |
918 | start_psymtab(ofile, secoff, fname, low, symoff, global_syms, static_syms) | |
7e258d18 PB |
919 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)\ |
920 | end_psymtab(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) | |
aab77d5f | 921 | |
7e258d18 | 922 | #include "partial-stab.h" |
bd5635a1 RP |
923 | } |
924 | ||
925 | /* If there's stuff to be cleaned up, clean it up. */ | |
3624c875 | 926 | if (DBX_SYMCOUNT (objfile) > 0 /* We have some syms */ |
9342ecb9 JG |
927 | /*FIXME, does this have a bug at start address 0? */ |
928 | && last_o_file_start | |
3624c875 FF |
929 | && objfile -> ei.entry_point < bufp->n_value |
930 | && objfile -> ei.entry_point >= last_o_file_start) | |
bd5635a1 | 931 | { |
3624c875 FF |
932 | objfile -> ei.entry_file_lowpc = last_o_file_start; |
933 | objfile -> ei.entry_file_highpc = bufp->n_value; | |
bd5635a1 RP |
934 | } |
935 | ||
936 | if (pst) | |
937 | { | |
938 | end_psymtab (pst, psymtab_include_list, includes_used, | |
afe4ca15 | 939 | symnum * symbol_size, end_of_text_addr, |
7e258d18 | 940 | dependency_list, dependencies_used); |
bd5635a1 RP |
941 | } |
942 | ||
021959e2 | 943 | free_bincl_list (objfile); |
bd5635a1 RP |
944 | discard_cleanups (old_chain); |
945 | } | |
946 | ||
4a35d6e9 FF |
947 | /* Allocate and partially fill a partial symtab. It will be |
948 | completely filled at the end of the symbol list. | |
949 | ||
950 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
951 | is the address relative to which its symbols are (incremental) or 0 | |
952 | (normal). */ | |
953 | ||
bd5635a1 | 954 | |
7e258d18 | 955 | struct partial_symtab * |
2af231b8 | 956 | start_psymtab (objfile, section_offsets, |
bd5635a1 | 957 | filename, textlow, ldsymoff, global_syms, static_syms) |
7d9884b9 | 958 | struct objfile *objfile; |
2af231b8 | 959 | struct section_offsets *section_offsets; |
bd5635a1 RP |
960 | char *filename; |
961 | CORE_ADDR textlow; | |
962 | int ldsymoff; | |
963 | struct partial_symbol *global_syms; | |
964 | struct partial_symbol *static_syms; | |
965 | { | |
966 | struct partial_symtab *result = | |
2af231b8 | 967 | start_psymtab_common(objfile, section_offsets, |
021959e2 | 968 | filename, textlow, global_syms, static_syms); |
bd5635a1 | 969 | |
021959e2 JG |
970 | result->read_symtab_private = (char *) |
971 | obstack_alloc (&objfile -> psymbol_obstack, sizeof (struct symloc)); | |
972 | LDSYMOFF(result) = ldsymoff; | |
bd5635a1 | 973 | result->read_symtab = dbx_psymtab_to_symtab; |
9342ecb9 JG |
974 | SYMBOL_SIZE(result) = symbol_size; |
975 | SYMBOL_OFFSET(result) = symbol_table_offset; | |
976 | STRING_OFFSET(result) = string_table_offset; | |
977 | FILE_STRING_OFFSET(result) = file_string_table_offset; | |
bd5635a1 | 978 | |
2af231b8 JG |
979 | /* If we're handling an ELF file, drag some section-relocation info |
980 | for this source file out of the ELF symbol table, to compensate for | |
981 | Sun brain death. This replaces the section_offsets in this psymtab, | |
982 | if successful. */ | |
983 | elfstab_offset_sections (objfile, result); | |
984 | ||
2e4964ad FF |
985 | /* Deduce the source language from the filename for this psymtab. */ |
986 | psymtab_language = deduce_language_from_filename (filename); | |
987 | ||
bd5635a1 RP |
988 | return result; |
989 | } | |
990 | ||
bd5635a1 RP |
991 | /* Close off the current usage of a partial_symbol table entry. This |
992 | involves setting the correct number of includes (with a realloc), | |
993 | setting the high text mark, setting the symbol length in the | |
994 | executable, and setting the length of the global and static lists | |
995 | of psymbols. | |
996 | ||
997 | The global symbols and static symbols are then seperately sorted. | |
998 | ||
999 | Then the partial symtab is put on the global list. | |
1000 | *** List variables and peculiarities of same. *** | |
1001 | */ | |
021959e2 | 1002 | |
7e258d18 | 1003 | void |
bd5635a1 | 1004 | end_psymtab (pst, include_list, num_includes, capping_symbol_offset, |
7e258d18 | 1005 | capping_text, dependency_list, number_dependencies) |
bd5635a1 RP |
1006 | struct partial_symtab *pst; |
1007 | char **include_list; | |
1008 | int num_includes; | |
1009 | int capping_symbol_offset; | |
1010 | CORE_ADDR capping_text; | |
1011 | struct partial_symtab **dependency_list; | |
1012 | int number_dependencies; | |
7e258d18 | 1013 | /* struct partial_symbol *capping_global, *capping_static;*/ |
bd5635a1 RP |
1014 | { |
1015 | int i; | |
9342ecb9 | 1016 | struct partial_symtab *p1; |
021959e2 | 1017 | struct objfile *objfile = pst -> objfile; |
bd5635a1 | 1018 | |
7e258d18 PB |
1019 | if (capping_symbol_offset != -1) |
1020 | LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst); | |
bd5635a1 RP |
1021 | pst->texthigh = capping_text; |
1022 | ||
9342ecb9 JG |
1023 | /* Under Solaris, the N_SO symbols always have a value of 0, |
1024 | instead of the usual address of the .o file. Therefore, | |
1025 | we have to do some tricks to fill in texthigh and textlow. | |
1026 | The first trick is in partial-stab.h: if we see a static | |
1027 | or global function, and the textlow for the current pst | |
1028 | is still 0, then we use that function's address for | |
1029 | the textlow of the pst. | |
1030 | ||
1031 | Now, to fill in texthigh, we remember the last function seen | |
1032 | in the .o file (also in partial-stab.h). Also, there's a hack in | |
1033 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field | |
1034 | to here via the misc_info field. Therefore, we can fill in | |
1035 | a reliable texthigh by taking the address plus size of the | |
1036 | last function in the file. | |
1037 | ||
1038 | Unfortunately, that does not cover the case where the last function | |
1039 | in the file is static. See the paragraph below for more comments | |
1040 | on this situation. | |
1041 | ||
1042 | Finally, if we have a valid textlow for the current file, we run | |
1043 | down the partial_symtab_list filling in previous texthighs that | |
1044 | are still unknown. */ | |
1045 | ||
bcbf9559 | 1046 | if (pst->texthigh == 0 && last_function_name) { |
9342ecb9 JG |
1047 | char *p; |
1048 | int n; | |
1049 | struct minimal_symbol *minsym; | |
1050 | ||
1051 | p = strchr (last_function_name, ':'); | |
1052 | if (p == NULL) | |
1053 | p = last_function_name; | |
1054 | n = p - last_function_name; | |
1055 | p = alloca (n + 1); | |
1056 | strncpy (p, last_function_name, n); | |
1057 | p[n] = 0; | |
1058 | ||
1059 | minsym = lookup_minimal_symbol (p, objfile); | |
1060 | ||
1061 | if (minsym) { | |
2e4964ad FF |
1062 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + |
1063 | (int) MSYMBOL_INFO (minsym); | |
9342ecb9 JG |
1064 | } else { |
1065 | /* This file ends with a static function, and it's | |
1066 | difficult to imagine how hard it would be to track down | |
1067 | the elf symbol. Luckily, most of the time no one will notice, | |
1068 | since the next file will likely be compiled with -g, so | |
1069 | the code below will copy the first fuction's start address | |
1070 | back to our texthigh variable. (Also, if this file is the | |
1071 | last one in a dynamically linked program, texthigh already | |
1072 | has the right value.) If the next file isn't compiled | |
1073 | with -g, then the last function in this file winds up owning | |
1074 | all of the text space up to the next -g file, or the end (minus | |
1075 | shared libraries). This only matters for single stepping, | |
1076 | and even then it will still work, except that it will single | |
1077 | step through all of the covered functions, instead of setting | |
1078 | breakpoints around them as it usualy does. This makes it | |
1079 | pretty slow, but at least it doesn't fail. | |
1080 | ||
1081 | We can fix this with a fairly big change to bfd, but we need | |
1082 | to coordinate better with Cygnus if we want to do that. FIXME. */ | |
1083 | } | |
1084 | last_function_name = NULL; | |
1085 | } | |
1086 | ||
1087 | /* this test will be true if the last .o file is only data */ | |
1088 | if (pst->textlow == 0) | |
1089 | pst->textlow = pst->texthigh; | |
1090 | ||
bcbf9559 JG |
1091 | /* If we know our own starting text address, then walk through all other |
1092 | psymtabs for this objfile, and if any didn't know their ending text | |
1093 | address, set it to our starting address. Take care to not set our | |
1094 | own ending address to our starting address, nor to set addresses on | |
1095 | `dependency' files that have both textlow and texthigh zero. */ | |
9342ecb9 JG |
1096 | if (pst->textlow) { |
1097 | ALL_OBJFILE_PSYMTABS (objfile, p1) { | |
bcbf9559 | 1098 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) { |
9342ecb9 JG |
1099 | p1->texthigh = pst->textlow; |
1100 | /* if this file has only data, then make textlow match texthigh */ | |
1101 | if (p1->textlow == 0) | |
1102 | p1->textlow = p1->texthigh; | |
1103 | } | |
1104 | } | |
1105 | } | |
1106 | ||
1107 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
1108 | ||
1109 | ||
bd5635a1 | 1110 | pst->n_global_syms = |
021959e2 | 1111 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); |
bd5635a1 | 1112 | pst->n_static_syms = |
021959e2 | 1113 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); |
bd5635a1 RP |
1114 | |
1115 | pst->number_of_dependencies = number_dependencies; | |
1116 | if (number_dependencies) | |
1117 | { | |
1118 | pst->dependencies = (struct partial_symtab **) | |
021959e2 | 1119 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 | 1120 | number_dependencies * sizeof (struct partial_symtab *)); |
7e258d18 | 1121 | memcpy (pst->dependencies, dependency_list, |
bd5635a1 RP |
1122 | number_dependencies * sizeof (struct partial_symtab *)); |
1123 | } | |
1124 | else | |
1125 | pst->dependencies = 0; | |
1126 | ||
1127 | for (i = 0; i < num_includes; i++) | |
1128 | { | |
bd5635a1 | 1129 | struct partial_symtab *subpst = |
021959e2 | 1130 | allocate_psymtab (include_list[i], objfile); |
7d9884b9 | 1131 | |
2af231b8 | 1132 | subpst->section_offsets = pst->section_offsets; |
021959e2 JG |
1133 | subpst->read_symtab_private = |
1134 | (char *) obstack_alloc (&objfile->psymbol_obstack, | |
1135 | sizeof (struct symloc)); | |
4a35d6e9 FF |
1136 | LDSYMOFF(subpst) = |
1137 | LDSYMLEN(subpst) = | |
bd5635a1 RP |
1138 | subpst->textlow = |
1139 | subpst->texthigh = 0; | |
1140 | ||
3f83182d JG |
1141 | /* We could save slight bits of space by only making one of these, |
1142 | shared by the entire set of include files. FIXME-someday. */ | |
bd5635a1 | 1143 | subpst->dependencies = (struct partial_symtab **) |
021959e2 | 1144 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 RP |
1145 | sizeof (struct partial_symtab *)); |
1146 | subpst->dependencies[0] = pst; | |
1147 | subpst->number_of_dependencies = 1; | |
1148 | ||
1149 | subpst->globals_offset = | |
1150 | subpst->n_global_syms = | |
1151 | subpst->statics_offset = | |
1152 | subpst->n_static_syms = 0; | |
1153 | ||
1154 | subpst->readin = 0; | |
9a822037 | 1155 | subpst->symtab = 0; |
2707b48a | 1156 | subpst->read_symtab = pst->read_symtab; |
bd5635a1 RP |
1157 | } |
1158 | ||
021959e2 | 1159 | sort_pst_symbols (pst); |
bd5635a1 | 1160 | |
f9623881 JG |
1161 | /* If there is already a psymtab or symtab for a file of this name, remove it. |
1162 | (If there is a symtab, more drastic things also happen.) | |
1163 | This happens in VxWorks. */ | |
1164 | free_named_symtabs (pst->filename); | |
1165 | ||
7d9884b9 JG |
1166 | if (num_includes == 0 |
1167 | && number_dependencies == 0 | |
1168 | && pst->n_global_syms == 0 | |
1169 | && pst->n_static_syms == 0) { | |
1170 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
1171 | it is on the obstack, but we can forget to chain it on the list. */ | |
318bf84f FF |
1172 | struct partial_symtab *prev_pst; |
1173 | ||
1174 | /* First, snip it out of the psymtab chain */ | |
1175 | ||
1176 | if (pst->objfile->psymtabs == pst) | |
1177 | pst->objfile->psymtabs = pst->next; | |
1178 | else | |
1179 | for (prev_pst = pst->objfile->psymtabs; prev_pst; prev_pst = pst->next) | |
1180 | if (prev_pst->next == pst) | |
1181 | prev_pst->next = pst->next; | |
1182 | ||
1183 | /* Next, put it on a free list for recycling */ | |
1184 | ||
1185 | pst->next = pst->objfile->free_psymtabs; | |
1186 | pst->objfile->free_psymtabs = pst; | |
7d9884b9 | 1187 | } |
bd5635a1 RP |
1188 | } |
1189 | \f | |
1190 | static void | |
4c07f28d | 1191 | dbx_psymtab_to_symtab_1 (pst) |
bd5635a1 | 1192 | struct partial_symtab *pst; |
bd5635a1 RP |
1193 | { |
1194 | struct cleanup *old_chain; | |
1195 | int i; | |
1196 | ||
1197 | if (!pst) | |
1198 | return; | |
1199 | ||
1200 | if (pst->readin) | |
1201 | { | |
1202 | fprintf (stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1203 | pst->filename); | |
1204 | return; | |
1205 | } | |
1206 | ||
afe4ca15 | 1207 | /* Read in all partial symtabs on which this one is dependent */ |
bd5635a1 RP |
1208 | for (i = 0; i < pst->number_of_dependencies; i++) |
1209 | if (!pst->dependencies[i]->readin) | |
1210 | { | |
1211 | /* Inform about additional files that need to be read in. */ | |
1212 | if (info_verbose) | |
1213 | { | |
1214 | fputs_filtered (" ", stdout); | |
1215 | wrap_here (""); | |
1216 | fputs_filtered ("and ", stdout); | |
1217 | wrap_here (""); | |
1218 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
1219 | wrap_here (""); /* Flush output */ | |
1220 | fflush (stdout); | |
1221 | } | |
4c07f28d | 1222 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); |
bd5635a1 RP |
1223 | } |
1224 | ||
4a35d6e9 | 1225 | if (LDSYMLEN(pst)) /* Otherwise it's a dummy */ |
bd5635a1 RP |
1226 | { |
1227 | /* Init stuff necessary for reading in symbols */ | |
3416d90b | 1228 | stabsread_init (); |
c0302457 | 1229 | buildsym_init (); |
bd5635a1 | 1230 | old_chain = make_cleanup (really_free_pendings, 0); |
9342ecb9 | 1231 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
4c07f28d FF |
1232 | symbol_size = SYMBOL_SIZE (pst); |
1233 | ||
1234 | /* Read in this file's symbols */ | |
1235 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst), L_SET); | |
574dac8e | 1236 | read_ofile_symtab (pst); |
9404978d | 1237 | sort_symtab_syms (pst->symtab); |
bd5635a1 RP |
1238 | |
1239 | do_cleanups (old_chain); | |
1240 | } | |
1241 | ||
1242 | pst->readin = 1; | |
1243 | } | |
1244 | ||
ac88ca20 JG |
1245 | /* Read in all of the symbols for a given psymtab for real. |
1246 | Be verbose about it if the user wants that. */ | |
1247 | ||
bd5635a1 RP |
1248 | static void |
1249 | dbx_psymtab_to_symtab (pst) | |
1250 | struct partial_symtab *pst; | |
1251 | { | |
bd5635a1 | 1252 | bfd *sym_bfd; |
bd5635a1 RP |
1253 | |
1254 | if (!pst) | |
1255 | return; | |
1256 | ||
1257 | if (pst->readin) | |
1258 | { | |
1259 | fprintf (stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1260 | pst->filename); | |
1261 | return; | |
1262 | } | |
1263 | ||
4a35d6e9 | 1264 | if (LDSYMLEN(pst) || pst->number_of_dependencies) |
bd5635a1 RP |
1265 | { |
1266 | /* Print the message now, before reading the string table, | |
1267 | to avoid disconcerting pauses. */ | |
1268 | if (info_verbose) | |
1269 | { | |
1270 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1271 | fflush (stdout); | |
1272 | } | |
1273 | ||
7d9884b9 | 1274 | sym_bfd = pst->objfile->obfd; |
bd5635a1 | 1275 | |
aab77d5f PB |
1276 | next_symbol_text_func = dbx_next_symbol_text; |
1277 | ||
4c07f28d | 1278 | dbx_psymtab_to_symtab_1 (pst); |
bd5635a1 RP |
1279 | |
1280 | /* Match with global symbols. This only needs to be done once, | |
1281 | after all of the symtabs and dependencies have been read in. */ | |
021959e2 | 1282 | scan_file_globals (pst->objfile); |
bd5635a1 | 1283 | |
bd5635a1 RP |
1284 | /* Finish up the debug error message. */ |
1285 | if (info_verbose) | |
1286 | printf_filtered ("done.\n"); | |
1287 | } | |
1288 | } | |
1289 | ||
574dac8e | 1290 | /* Read in a defined section of a specific object file's symbols. */ |
9342ecb9 | 1291 | |
574dac8e JK |
1292 | static void |
1293 | read_ofile_symtab (pst) | |
1294 | struct partial_symtab *pst; | |
bd5635a1 RP |
1295 | { |
1296 | register char *namestring; | |
7d9884b9 | 1297 | register struct internal_nlist *bufp; |
bd5635a1 | 1298 | unsigned char type; |
afe4ca15 | 1299 | unsigned max_symnum; |
7d9884b9 | 1300 | register bfd *abfd; |
3416d90b | 1301 | struct symtab *rtn; |
574dac8e JK |
1302 | struct objfile *objfile; |
1303 | int sym_offset; /* Offset to start of symbols to read */ | |
1304 | int sym_size; /* Size of symbols to read */ | |
1305 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
1306 | int text_size; /* Size of text segment for symbols */ | |
1307 | struct section_offsets *section_offsets; | |
1308 | ||
1309 | objfile = pst->objfile; | |
1310 | sym_offset = LDSYMOFF(pst); | |
1311 | sym_size = LDSYMLEN(pst); | |
1312 | text_offset = pst->textlow; | |
1313 | text_size = pst->texthigh - pst->textlow; | |
1314 | section_offsets = pst->section_offsets; | |
7d9884b9 | 1315 | |
021959e2 | 1316 | current_objfile = objfile; |
3416d90b | 1317 | subfile_stack = NULL; |
bd5635a1 | 1318 | |
3624c875 | 1319 | stringtab_global = DBX_STRINGTAB (objfile); |
3416d90b | 1320 | last_source_file = NULL; |
bd5635a1 | 1321 | |
7d9884b9 JG |
1322 | abfd = objfile->obfd; |
1323 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ | |
bd5635a1 RP |
1324 | symbuf_end = symbuf_idx = 0; |
1325 | ||
1326 | /* It is necessary to actually read one symbol *before* the start | |
1327 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
1328 | occurs before the N_SO symbol. | |
1329 | ||
1330 | Detecting this in read_dbx_symtab | |
1331 | would slow down initial readin, so we look for it here instead. */ | |
9342ecb9 | 1332 | if (!processing_acc_compilation && sym_offset >= (int)symbol_size) |
bd5635a1 | 1333 | { |
7d9884b9 JG |
1334 | bfd_seek (symfile_bfd, sym_offset - symbol_size, L_INCR); |
1335 | fill_symbuf (abfd); | |
bd5635a1 | 1336 | bufp = &symbuf[symbuf_idx++]; |
7d9884b9 | 1337 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 | 1338 | |
afe4ca15 | 1339 | SET_NAMESTRING (); |
bd5635a1 | 1340 | |
1aed6766 SG |
1341 | processing_gcc_compilation = 0; |
1342 | if (bufp->n_type == N_TEXT) | |
1343 | { | |
2e4964ad | 1344 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1345 | processing_gcc_compilation = 1; |
2e4964ad | 1346 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 SG |
1347 | processing_gcc_compilation = 2; |
1348 | } | |
3416d90b FF |
1349 | |
1350 | /* Try to select a C++ demangling based on the compilation unit | |
1351 | producer. */ | |
1352 | ||
1353 | if (processing_gcc_compilation) | |
1354 | { | |
1aed6766 | 1355 | if (AUTO_DEMANGLING) |
3416d90b FF |
1356 | { |
1357 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1358 | } | |
3416d90b | 1359 | } |
bd5635a1 RP |
1360 | } |
1361 | else | |
1362 | { | |
1363 | /* The N_SO starting this symtab is the first symbol, so we | |
1364 | better not check the symbol before it. I'm not this can | |
1365 | happen, but it doesn't hurt to check for it. */ | |
7d9884b9 | 1366 | bfd_seek (symfile_bfd, sym_offset, L_INCR); |
bd5635a1 RP |
1367 | processing_gcc_compilation = 0; |
1368 | } | |
1369 | ||
1370 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1371 | fill_symbuf (abfd); |
bd5635a1 RP |
1372 | bufp = &symbuf[symbuf_idx]; |
1373 | if (bufp->n_type != (unsigned char)N_SO) | |
1374 | error("First symbol in segment of executable not a source symbol"); | |
1375 | ||
afe4ca15 JG |
1376 | max_symnum = sym_size / symbol_size; |
1377 | ||
bd5635a1 | 1378 | for (symnum = 0; |
afe4ca15 | 1379 | symnum < max_symnum; |
bd5635a1 RP |
1380 | symnum++) |
1381 | { | |
1382 | QUIT; /* Allow this to be interruptable */ | |
1383 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1384 | fill_symbuf(abfd); |
bd5635a1 | 1385 | bufp = &symbuf[symbuf_idx++]; |
7d9884b9 | 1386 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 | 1387 | |
c0302457 | 1388 | type = bufp->n_type; |
bd5635a1 | 1389 | |
afe4ca15 | 1390 | SET_NAMESTRING (); |
bd5635a1 | 1391 | |
7d9884b9 | 1392 | if (type & N_STAB) { |
c55e6167 | 1393 | process_one_symbol (type, bufp->n_desc, bufp->n_value, |
2af231b8 | 1394 | namestring, section_offsets, objfile); |
7d9884b9 | 1395 | } |
bd5635a1 RP |
1396 | /* We skip checking for a new .o or -l file; that should never |
1397 | happen in this routine. */ | |
1aed6766 | 1398 | else if (type == N_TEXT) |
3416d90b FF |
1399 | { |
1400 | /* I don't think this code will ever be executed, because | |
1401 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
1402 | the N_SO symbol which starts this source file. | |
1403 | However, there is no reason not to accept | |
1404 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
1aed6766 | 1405 | |
2e4964ad | 1406 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1407 | processing_gcc_compilation = 1; |
2e4964ad | 1408 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 SG |
1409 | processing_gcc_compilation = 2; |
1410 | ||
1aed6766 | 1411 | if (AUTO_DEMANGLING) |
3416d90b FF |
1412 | { |
1413 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1414 | } | |
3416d90b | 1415 | } |
bd5635a1 RP |
1416 | else if (type & N_EXT || type == (unsigned char)N_TEXT |
1417 | || type == (unsigned char)N_NBTEXT | |
0c4d2cc2 | 1418 | ) { |
bd5635a1 RP |
1419 | /* Global symbol: see if we came across a dbx defintion for |
1420 | a corresponding symbol. If so, store the value. Remove | |
1421 | syms from the chain when their values are stored, but | |
1422 | search the whole chain, as there may be several syms from | |
1423 | different files with the same name. */ | |
1424 | /* This is probably not true. Since the files will be read | |
1425 | in one at a time, each reference to a global symbol will | |
1426 | be satisfied in each file as it appears. So we skip this | |
1427 | section. */ | |
1428 | ; | |
0c4d2cc2 | 1429 | } |
bd5635a1 | 1430 | } |
9404978d | 1431 | |
021959e2 | 1432 | current_objfile = NULL; |
9342ecb9 JG |
1433 | |
1434 | /* In a Solaris elf file, this variable, which comes from the | |
1435 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
1436 | which comes from pst->textlow is correct. */ | |
1437 | if (last_source_start_addr == 0) | |
1438 | last_source_start_addr = text_offset; | |
1439 | ||
574dac8e JK |
1440 | pst->symtab = end_symtab (text_offset + text_size, 0, 0, objfile, |
1441 | SECT_OFF_TEXT); | |
3416d90b | 1442 | end_stabs (); |
bd5635a1 | 1443 | } |
574dac8e | 1444 | |
bd5635a1 | 1445 | \f |
c55e6167 JG |
1446 | /* This handles a single symbol from the symbol-file, building symbols |
1447 | into a GDB symtab. It takes these arguments and an implicit argument. | |
1448 | ||
1449 | TYPE is the type field of the ".stab" symbol entry. | |
1450 | DESC is the desc field of the ".stab" entry. | |
1451 | VALU is the value field of the ".stab" entry. | |
1452 | NAME is the symbol name, in our address space. | |
2af231b8 JG |
1453 | SECTION_OFFSETS is a set of amounts by which the sections of this object |
1454 | file were relocated when it was loaded into memory. | |
1455 | All symbols that refer | |
1456 | to memory locations need to be offset by these amounts. | |
9342ecb9 | 1457 | OBJFILE is the object file from which we are reading symbols. |
c55e6167 JG |
1458 | It is used in end_symtab. */ |
1459 | ||
7e258d18 | 1460 | void |
2af231b8 | 1461 | process_one_symbol (type, desc, valu, name, section_offsets, objfile) |
bd5635a1 RP |
1462 | int type, desc; |
1463 | CORE_ADDR valu; | |
1464 | char *name; | |
2af231b8 | 1465 | struct section_offsets *section_offsets; |
9342ecb9 | 1466 | struct objfile *objfile; |
bd5635a1 | 1467 | { |
a5e6391b JK |
1468 | #ifdef SUN_FIXED_LBRAC_BUG |
1469 | /* If SUN_FIXED_LBRAC_BUG is defined, then it tells us whether we need | |
1470 | to correct the address of N_LBRAC's. If it is not defined, then | |
1471 | we never need to correct the addresses. */ | |
1472 | ||
0cf9329b | 1473 | /* This records the last pc address we've seen. We depend on there being |
bd5635a1 RP |
1474 | an SLINE or FUN or SO before the first LBRAC, since the variable does |
1475 | not get reset in between reads of different symbol files. */ | |
1476 | static CORE_ADDR last_pc_address; | |
a5e6391b | 1477 | #endif |
8357834f | 1478 | |
bd5635a1 | 1479 | register struct context_stack *new; |
9342ecb9 JG |
1480 | /* This remembers the address of the start of a function. It is used |
1481 | because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries are | |
1482 | relative to the current function's start address. On systems | |
2af231b8 JG |
1483 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, and is |
1484 | used to relocate these symbol types rather than SECTION_OFFSETS. */ | |
9342ecb9 | 1485 | static CORE_ADDR function_start_offset; |
bd5635a1 RP |
1486 | char *colon_pos; |
1487 | ||
574dac8e JK |
1488 | /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are relative |
1489 | to the function start address. */ | |
1490 | int block_address_function_relative; | |
1491 | ||
8357834f JK |
1492 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this source |
1493 | file. */ | |
1494 | int n_opt_found; | |
1495 | ||
574dac8e JK |
1496 | /* This is true for Solaris (and all other stabs-in-elf systems, hopefully, |
1497 | since it would be silly to do things differently from Solaris), and | |
1498 | false for SunOS4 and other a.out file formats. */ | |
1499 | block_address_function_relative = | |
1500 | 0 == strncmp (bfd_get_target (objfile->obfd), "elf", 3); | |
1501 | ||
1502 | if (!block_address_function_relative) | |
1503 | /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the | |
1504 | function start address, so just use the text offset. */ | |
1505 | function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
51b80b00 | 1506 | |
bd5635a1 RP |
1507 | /* Something is wrong if we see real data before |
1508 | seeing a source file name. */ | |
1509 | ||
3416d90b | 1510 | if (last_source_file == NULL && type != (unsigned char)N_SO) |
bd5635a1 | 1511 | { |
a5e6391b JK |
1512 | /* Ignore any symbols which appear before an N_SO symbol. Currently |
1513 | no one puts symbols there, but we should deal gracefully with the | |
1514 | case. A complain()t might be in order (if !IGNORE_SYMBOL (type)), | |
1515 | but this should not be an error (). */ | |
1516 | return; | |
bd5635a1 RP |
1517 | } |
1518 | ||
1519 | switch (type) | |
1520 | { | |
1521 | case N_FUN: | |
1522 | case N_FNAME: | |
0bd83fd7 | 1523 | #if 0 |
3c03b5de SG |
1524 | /* It seems that the Sun ANSI C compiler (acc) replaces N_FUN with N_GSYM and |
1525 | N_STSYM with a type code of f or F. Can't enable this until we get some | |
4c7c6bab | 1526 | stuff straightened out with psymtabs. FIXME. */ |
0bd83fd7 | 1527 | |
3c03b5de SG |
1528 | case N_GSYM: |
1529 | case N_STSYM: | |
0bd83fd7 | 1530 | #endif /* 0 */ |
3c03b5de | 1531 | |
2af231b8 JG |
1532 | /* Relocate for dynamic loading */ |
1533 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c55e6167 | 1534 | |
bd5635a1 RP |
1535 | /* Either of these types of symbols indicates the start of |
1536 | a new function. We must process its "name" normally for dbx, | |
1537 | but also record the start of a new lexical context, and possibly | |
1538 | also the end of the lexical context for the previous function. */ | |
1539 | /* This is not always true. This type of symbol may indicate a | |
1540 | text segment variable. */ | |
1541 | ||
bd5635a1 RP |
1542 | colon_pos = strchr (name, ':'); |
1543 | if (!colon_pos++ | |
1544 | || (*colon_pos != 'f' && *colon_pos != 'F')) | |
1545 | { | |
9342ecb9 | 1546 | define_symbol (valu, name, desc, type, objfile); |
bd5635a1 RP |
1547 | break; |
1548 | } | |
1549 | ||
a5e6391b | 1550 | #ifdef SUN_FIXED_LBRAC_BUG |
3c03b5de | 1551 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 1552 | #endif |
3c03b5de | 1553 | |
574dac8e JK |
1554 | if (block_address_function_relative) |
1555 | /* On Solaris 2.0 compilers, the block addresses and N_SLINE's | |
1556 | are relative to the start of the function. On normal systems, | |
1557 | and when using gcc on Solaris 2.0, these addresses are just | |
1558 | absolute, or relative to the N_SO, depending on | |
1559 | BLOCK_ADDRESS_ABSOLUTE. */ | |
1560 | function_start_offset = valu; | |
9342ecb9 | 1561 | |
bd5635a1 RP |
1562 | within_function = 1; |
1563 | if (context_stack_depth > 0) | |
1564 | { | |
7d9884b9 | 1565 | new = pop_context (); |
bd5635a1 RP |
1566 | /* Make a block for the local symbols within. */ |
1567 | finish_block (new->name, &local_symbols, new->old_blocks, | |
9342ecb9 | 1568 | new->start_addr, valu, objfile); |
bd5635a1 RP |
1569 | } |
1570 | /* Stack must be empty now. */ | |
1571 | if (context_stack_depth != 0) | |
51b80b00 | 1572 | complain (&lbrac_unmatched_complaint, symnum); |
bd5635a1 | 1573 | |
7d9884b9 | 1574 | new = push_context (0, valu); |
9342ecb9 | 1575 | new->name = define_symbol (valu, name, desc, type, objfile); |
bd5635a1 RP |
1576 | break; |
1577 | ||
bd5635a1 RP |
1578 | case N_LBRAC: |
1579 | /* This "symbol" just indicates the start of an inner lexical | |
1580 | context within a function. */ | |
1581 | ||
574dac8e JK |
1582 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1583 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1584 | valu += function_start_offset; |
c55e6167 | 1585 | #else |
574dac8e JK |
1586 | if (block_address_function_relative) |
1587 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1588 | valu += function_start_offset; | |
1589 | else | |
1590 | /* On most machines, the block addresses are relative to the | |
1591 | N_SO, the linker did not relocate them (sigh). */ | |
1592 | valu += last_source_start_addr; | |
bd5635a1 RP |
1593 | #endif |
1594 | ||
a5e6391b | 1595 | #ifdef SUN_FIXED_LBRAC_BUG |
8357834f | 1596 | if (!SUN_FIXED_LBRAC_BUG && valu < last_pc_address) { |
bd5635a1 | 1597 | /* Patch current LBRAC pc value to match last handy pc value */ |
51b80b00 | 1598 | complain (&lbrac_complaint); |
bd5635a1 RP |
1599 | valu = last_pc_address; |
1600 | } | |
a5e6391b | 1601 | #endif |
7d9884b9 | 1602 | new = push_context (desc, valu); |
bd5635a1 RP |
1603 | break; |
1604 | ||
1605 | case N_RBRAC: | |
1606 | /* This "symbol" just indicates the end of an inner lexical | |
1607 | context that was started with N_LBRAC. */ | |
1608 | ||
574dac8e JK |
1609 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1610 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1611 | valu += function_start_offset; |
c55e6167 | 1612 | #else |
574dac8e JK |
1613 | if (block_address_function_relative) |
1614 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1615 | valu += function_start_offset; | |
1616 | else | |
1617 | /* On most machines, the block addresses are relative to the | |
1618 | N_SO, the linker did not relocate them (sigh). */ | |
1619 | valu += last_source_start_addr; | |
bd5635a1 RP |
1620 | #endif |
1621 | ||
7d9884b9 | 1622 | new = pop_context(); |
bd5635a1 | 1623 | if (desc != new->depth) |
51b80b00 | 1624 | complain (&lbrac_mismatch_complaint, symnum); |
bd5635a1 RP |
1625 | |
1626 | /* Some compilers put the variable decls inside of an | |
1627 | LBRAC/RBRAC block. This macro should be nonzero if this | |
1628 | is true. DESC is N_DESC from the N_RBRAC symbol. | |
0cf9329b PB |
1629 | GCC_P is true if we've detected the GCC_COMPILED_SYMBOL |
1630 | or the GCC2_COMPILED_SYMBOL. */ | |
bd5635a1 RP |
1631 | #if !defined (VARIABLES_INSIDE_BLOCK) |
1632 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 0 | |
1633 | #endif | |
1634 | ||
1635 | /* Can only use new->locals as local symbols here if we're in | |
1636 | gcc or on a machine that puts them before the lbrack. */ | |
1637 | if (!VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
1638 | local_symbols = new->locals; | |
1639 | ||
1640 | /* If this is not the outermost LBRAC...RBRAC pair in the | |
1641 | function, its local symbols preceded it, and are the ones | |
1642 | just recovered from the context stack. Defined the block for them. | |
1643 | ||
1644 | If this is the outermost LBRAC...RBRAC pair, there is no | |
1645 | need to do anything; leave the symbols that preceded it | |
1646 | to be attached to the function's own block. However, if | |
1647 | it is so, we need to indicate that we just moved outside | |
1648 | of the function. */ | |
1649 | if (local_symbols | |
1650 | && (context_stack_depth | |
1651 | > !VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation))) | |
1652 | { | |
1653 | /* FIXME Muzzle a compiler bug that makes end < start. */ | |
1654 | if (new->start_addr > valu) | |
1655 | { | |
51b80b00 | 1656 | complain (&lbrac_rbrac_complaint); |
bd5635a1 RP |
1657 | new->start_addr = valu; |
1658 | } | |
1659 | /* Make a block for the local symbols within. */ | |
1660 | finish_block (0, &local_symbols, new->old_blocks, | |
9342ecb9 | 1661 | new->start_addr, valu, objfile); |
bd5635a1 RP |
1662 | } |
1663 | else | |
1664 | { | |
1665 | within_function = 0; | |
1666 | } | |
1667 | if (VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
1668 | /* Now pop locals of block just finished. */ | |
1669 | local_symbols = new->locals; | |
1670 | break; | |
1671 | ||
9bb30452 | 1672 | case N_FN: |
6150cc73 | 1673 | case N_FN_SEQ: |
9bb30452 | 1674 | /* This kind of symbol indicates the start of an object file. */ |
2af231b8 JG |
1675 | /* Relocate for dynamic loading */ |
1676 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
bd5635a1 RP |
1677 | break; |
1678 | ||
1679 | case N_SO: | |
1680 | /* This type of symbol indicates the start of data | |
1681 | for one source file. | |
1682 | Finish the symbol table of the previous source file | |
1683 | (if any) and start accumulating a new symbol table. */ | |
2af231b8 JG |
1684 | /* Relocate for dynamic loading */ |
1685 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c55e6167 | 1686 | |
8357834f JK |
1687 | n_opt_found = 0; |
1688 | ||
a5e6391b | 1689 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 1690 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 1691 | #endif |
8357834f | 1692 | |
bd5635a1 RP |
1693 | #ifdef PCC_SOL_BROKEN |
1694 | /* pcc bug, occasionally puts out SO for SOL. */ | |
1695 | if (context_stack_depth > 0) | |
1696 | { | |
1697 | start_subfile (name, NULL); | |
1698 | break; | |
1699 | } | |
1700 | #endif | |
1701 | if (last_source_file) | |
7e258d18 PB |
1702 | { |
1703 | /* Check if previous symbol was also an N_SO (with some | |
1704 | sanity checks). If so, that one was actually the directory | |
1705 | name, and the current one is the real file name. | |
1706 | Patch things up. */ | |
6985bc54 | 1707 | if (previous_stab_code == (unsigned char) N_SO) |
7e258d18 | 1708 | { |
3416d90b | 1709 | patch_subfile_names (current_subfile, name); |
c72af089 | 1710 | break; /* Ignore repeated SOs */ |
7e258d18 | 1711 | } |
65ce5df4 | 1712 | end_symtab (valu, 0, 0, objfile, SECT_OFF_TEXT); |
3416d90b | 1713 | end_stabs (); |
7e258d18 | 1714 | } |
3416d90b | 1715 | start_stabs (); |
bd5635a1 RP |
1716 | start_symtab (name, NULL, valu); |
1717 | break; | |
1718 | ||
c55e6167 | 1719 | |
bd5635a1 RP |
1720 | case N_SOL: |
1721 | /* This type of symbol indicates the start of data for | |
1722 | a sub-source-file, one whose contents were copied or | |
1723 | included in the compilation of the main source file | |
1724 | (whose name was given in the N_SO symbol.) */ | |
2af231b8 JG |
1725 | /* Relocate for dynamic loading */ |
1726 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
784fd92b | 1727 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
1728 | break; |
1729 | ||
1730 | case N_BINCL: | |
1731 | push_subfile (); | |
1732 | add_new_header_file (name, valu); | |
784fd92b | 1733 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
1734 | break; |
1735 | ||
1736 | case N_EINCL: | |
784fd92b | 1737 | start_subfile (pop_subfile (), current_subfile->dirname); |
bd5635a1 RP |
1738 | break; |
1739 | ||
1740 | case N_EXCL: | |
1741 | add_old_header_file (name, valu); | |
1742 | break; | |
1743 | ||
1744 | case N_SLINE: | |
1745 | /* This type of "symbol" really just records | |
1746 | one line-number -- core-address correspondence. | |
1747 | Enter it in the line list for this symbol table. */ | |
9342ecb9 JG |
1748 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
1749 | valu += function_start_offset; | |
a5e6391b | 1750 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 1751 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 1752 | #endif |
4137c5fc | 1753 | record_line (current_subfile, desc, valu); |
bd5635a1 RP |
1754 | break; |
1755 | ||
1756 | case N_BCOMM: | |
1757 | if (common_block) | |
a5e6391b JK |
1758 | { |
1759 | static struct complaint msg = { | |
1760 | "Invalid symbol data: common within common at symtab pos %d", | |
1761 | 0, 0}; | |
1762 | complain (&msg, symnum); | |
1763 | } | |
bd5635a1 RP |
1764 | common_block = local_symbols; |
1765 | common_block_i = local_symbols ? local_symbols->nsyms : 0; | |
1766 | break; | |
1767 | ||
1768 | case N_ECOMM: | |
1769 | /* Symbols declared since the BCOMM are to have the common block | |
1770 | start address added in when we know it. common_block points to | |
1771 | the first symbol after the BCOMM in the local_symbols list; | |
1772 | copy the list and hang it off the symbol for the common block name | |
1773 | for later fixup. */ | |
1774 | { | |
1775 | int i; | |
1776 | struct symbol *sym = | |
9342ecb9 | 1777 | (struct symbol *) xmmalloc (objfile -> md, sizeof (struct symbol)); |
4ed3a9ea | 1778 | memset (sym, 0, sizeof *sym); |
bd5635a1 RP |
1779 | SYMBOL_NAME (sym) = savestring (name, strlen (name)); |
1780 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1781 | SYMBOL_NAMESPACE (sym) = (enum namespace)((long) | |
1782 | copy_pending (local_symbols, common_block_i, common_block)); | |
1783 | i = hashname (SYMBOL_NAME (sym)); | |
1784 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; | |
1785 | global_sym_chain[i] = sym; | |
1786 | common_block = 0; | |
1787 | break; | |
1788 | } | |
1789 | ||
2af231b8 JG |
1790 | /* The following symbol types need to have the appropriate offset added |
1791 | to their value; then we process symbol definitions in the name. */ | |
1792 | ||
1793 | case N_STSYM: /* Static symbol in data seg */ | |
1794 | case N_LCSYM: /* Static symbol in BSS seg */ | |
1795 | case N_ROSYM: /* Static symbol in Read-only data seg */ | |
1796 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. FIXME. | |
1797 | Solaris2's stabs-in-coff makes *most* symbols relative | |
1798 | but leaves a few absolute. N_STSYM and friends sit on the fence. | |
1799 | .stab "foo:S...",N_STSYM is absolute (ld relocates it) | |
1800 | .stab "foo:V...",N_STSYM is relative (section base subtracted). | |
1801 | This leaves us no choice but to search for the 'S' or 'V'... | |
1802 | (or pass the whole section_offsets stuff down ONE MORE function | |
1803 | call level, which we really don't want to do). */ | |
1804 | { | |
1805 | char *p; | |
1806 | p = strchr (name, ':'); | |
1807 | if (p != 0 && p[1] == 'S') | |
1808 | { | |
1809 | /* FIXME! We relocate it by the TEXT offset, in case the | |
1810 | whole module moved in memory. But this is wrong, since | |
1811 | the sections can side around independently. */ | |
1812 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1813 | goto define_a_symbol; | |
1814 | } | |
1815 | /* Since it's not the kludge case, re-dispatch to the right handler. */ | |
1816 | switch (type) { | |
1817 | case N_STSYM: goto case_N_STSYM; | |
1818 | case N_LCSYM: goto case_N_LCSYM; | |
1819 | case N_ROSYM: goto case_N_ROSYM; | |
1820 | default: abort(); | |
1821 | } | |
1822 | } | |
1823 | ||
1824 | case_N_STSYM: /* Static symbol in data seg */ | |
c55e6167 | 1825 | case N_DSLINE: /* Source line number, data seg */ |
2af231b8 JG |
1826 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA); |
1827 | goto define_a_symbol; | |
1828 | ||
1829 | case_N_LCSYM: /* Static symbol in BSS seg */ | |
c55e6167 JG |
1830 | case N_BSLINE: /* Source line number, bss seg */ |
1831 | /* N_BROWS: overlaps with N_BSLINE */ | |
2af231b8 JG |
1832 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS); |
1833 | goto define_a_symbol; | |
1834 | ||
1835 | case_N_ROSYM: /* Static symbol in Read-only data seg */ | |
1836 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA); | |
1837 | goto define_a_symbol; | |
1838 | ||
c55e6167 | 1839 | case N_ENTRY: /* Alternate entry point */ |
2af231b8 JG |
1840 | /* Relocate for dynamic loading */ |
1841 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1842 | goto define_a_symbol; | |
c55e6167 JG |
1843 | |
1844 | /* The following symbol types don't need the address field relocated, | |
1845 | since it is either unused, or is absolute. */ | |
2af231b8 | 1846 | define_a_symbol: |
c55e6167 JG |
1847 | case N_GSYM: /* Global variable */ |
1848 | case N_NSYMS: /* Number of symbols (ultrix) */ | |
1849 | case N_NOMAP: /* No map? (ultrix) */ | |
1850 | case N_RSYM: /* Register variable */ | |
1851 | case N_DEFD: /* Modula-2 GNU module dependency */ | |
1852 | case N_SSYM: /* Struct or union element */ | |
1853 | case N_LSYM: /* Local symbol in stack */ | |
1854 | case N_PSYM: /* Parameter variable */ | |
1855 | case N_LENG: /* Length of preceding symbol type */ | |
1856 | if (name) | |
9342ecb9 | 1857 | define_symbol (valu, name, desc, type, objfile); |
bd5635a1 RP |
1858 | break; |
1859 | ||
ec8ceca3 JG |
1860 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
1861 | for a bunch of other flags, too. Someday we may parse their | |
1862 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
1863 | case N_OPT: /* Solaris 2: Compiler options */ | |
1864 | if (name) | |
1865 | { | |
2e4964ad | 1866 | if (STREQ (name, GCC2_COMPILED_FLAG_SYMBOL)) |
3416d90b | 1867 | { |
1aed6766 | 1868 | processing_gcc_compilation = 2; |
3416d90b | 1869 | #if 1 /* Works, but is experimental. -fnf */ |
1aed6766 | 1870 | if (AUTO_DEMANGLING) |
3416d90b FF |
1871 | { |
1872 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1873 | } | |
1874 | #endif | |
1875 | } | |
8357834f JK |
1876 | else |
1877 | n_opt_found = 1; | |
ec8ceca3 JG |
1878 | } |
1879 | break; | |
1880 | ||
bcbf9559 JG |
1881 | /* The following symbol types can be ignored. */ |
1882 | case N_OBJ: /* Solaris 2: Object file dir and name */ | |
bcbf9559 JG |
1883 | /* N_UNDF: Solaris 2: file separator mark */ |
1884 | /* N_UNDF: -- we will never encounter it, since we only process one | |
1885 | file's symbols at once. */ | |
4c7c6bab JG |
1886 | case N_ENDM: /* Solaris 2: End of module */ |
1887 | case N_MAIN: /* Name of main routine. */ | |
9342ecb9 JG |
1888 | break; |
1889 | ||
c55e6167 JG |
1890 | /* The following symbol types we don't know how to process. Handle |
1891 | them in a "default" way, but complain to people who care. */ | |
bd5635a1 | 1892 | default: |
2af231b8 | 1893 | case N_CATCH: /* Exception handler catcher */ |
c55e6167 | 1894 | case N_EHDECL: /* Exception handler name */ |
c55e6167 JG |
1895 | case N_PC: /* Global symbol in Pascal */ |
1896 | case N_M2C: /* Modula-2 compilation unit */ | |
1897 | /* N_MOD2: overlaps with N_EHDECL */ | |
1898 | case N_SCOPE: /* Modula-2 scope information */ | |
1899 | case N_ECOML: /* End common (local name) */ | |
1900 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
1901 | case N_NBDATA: | |
1902 | case N_NBBSS: | |
1903 | case N_NBSTS: | |
1904 | case N_NBLCS: | |
1905 | complain (&unknown_symtype_complaint, local_hex_string(type)); | |
bd5635a1 | 1906 | if (name) |
9342ecb9 | 1907 | define_symbol (valu, name, desc, type, objfile); |
bd5635a1 | 1908 | } |
7e258d18 PB |
1909 | |
1910 | previous_stab_code = type; | |
bd5635a1 RP |
1911 | } |
1912 | \f | |
bd5635a1 RP |
1913 | /* Copy a pending list, used to record the contents of a common |
1914 | block for later fixup. */ | |
1915 | static struct pending * | |
1916 | copy_pending (beg, begi, end) | |
021959e2 | 1917 | struct pending *beg; |
bd5635a1 | 1918 | int begi; |
021959e2 | 1919 | struct pending *end; |
bd5635a1 RP |
1920 | { |
1921 | struct pending *new = 0; | |
1922 | struct pending *next; | |
1923 | ||
1924 | for (next = beg; next != 0 && (next != end || begi < end->nsyms); | |
1925 | next = next->next, begi = 0) | |
1926 | { | |
1927 | register int j; | |
1928 | for (j = begi; j < next->nsyms; j++) | |
1929 | add_symbol_to_list (next->symbol[j], &new); | |
1930 | } | |
1931 | return new; | |
1932 | } | |
bd5635a1 | 1933 | \f |
9342ecb9 JG |
1934 | /* Scan and build partial symbols for an ELF symbol file. |
1935 | This ELF file has already been processed to get its minimal symbols, | |
1936 | and any DWARF symbols that were in it. | |
1937 | ||
1938 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
1939 | rolled into one. | |
1940 | ||
1941 | OBJFILE is the object file we are reading symbols from. | |
1942 | ADDR is the address relative to which the symbols are (e.g. | |
1943 | the base address of the text segment). | |
1944 | MAINLINE is true if we are reading the main symbol | |
1945 | table (as opposed to a shared lib or dynamically loaded file). | |
1946 | STABOFFSET and STABSIZE define the location in OBJFILE where the .stab | |
1947 | section exists. | |
1948 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
1949 | .stabstr section exists. | |
1950 | ||
1951 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
1952 | adjusted for elf details. */ | |
1953 | ||
1954 | void | |
1aed6766 | 1955 | elfstab_build_psymtabs (objfile, section_offsets, mainline, |
9342ecb9 | 1956 | staboffset, stabsize, |
1aed6766 SG |
1957 | stabstroffset, stabstrsize) |
1958 | struct objfile *objfile; | |
1959 | struct section_offsets *section_offsets; | |
1960 | int mainline; | |
51b80b00 | 1961 | file_ptr staboffset; |
1aed6766 | 1962 | unsigned int stabsize; |
51b80b00 | 1963 | file_ptr stabstroffset; |
1aed6766 | 1964 | unsigned int stabstrsize; |
9342ecb9 JG |
1965 | { |
1966 | int val; | |
1967 | bfd *sym_bfd = objfile->obfd; | |
1968 | char *name = bfd_get_filename (sym_bfd); | |
1969 | struct dbx_symfile_info *info; | |
1970 | ||
2af231b8 JG |
1971 | /* There is already a dbx_symfile_info allocated by our caller. |
1972 | It might even contain some info from the ELF symtab to help us. */ | |
1973 | info = (struct dbx_symfile_info *) objfile->sym_private; | |
9342ecb9 JG |
1974 | |
1975 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
1976 | if (!DBX_TEXT_SECT (objfile)) | |
1977 | error ("Can't find .text section in symbol file"); | |
1978 | ||
1979 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
1980 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; | |
1981 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
1982 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; | |
1983 | DBX_SYMTAB_OFFSET (objfile) = staboffset; | |
1984 | ||
51db2323 FF |
1985 | if (stabstrsize < 0 /* FIXME: stabstrsize is unsigned; never true! */ |
1986 | || stabstrsize > bfd_get_size (sym_bfd)) | |
9342ecb9 JG |
1987 | error ("ridiculous string table size: %d bytes", stabstrsize); |
1988 | DBX_STRINGTAB (objfile) = (char *) | |
1989 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
1990 | ||
1991 | /* Now read in the string table in one big gulp. */ | |
1992 | ||
1993 | val = bfd_seek (sym_bfd, stabstroffset, L_SET); | |
1994 | if (val < 0) | |
1995 | perror_with_name (name); | |
1996 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
1997 | if (val != stabstrsize) | |
1998 | perror_with_name (name); | |
1999 | ||
3416d90b | 2000 | stabsread_new_init (); |
9342ecb9 JG |
2001 | buildsym_new_init (); |
2002 | free_header_files (); | |
2003 | init_header_files (); | |
2004 | install_minimal_symbols (objfile); | |
2005 | ||
2006 | processing_acc_compilation = 1; | |
2007 | ||
2008 | /* In an elf file, we've already installed the minimal symbols that came | |
2009 | from the elf (non-stab) symbol table, so always act like an | |
2010 | incremental load here. */ | |
2af231b8 JG |
2011 | dbx_symfile_read (objfile, section_offsets, 0); |
2012 | } | |
2013 | \f | |
040b9597 RP |
2014 | /* Scan and build partial symbols for a PA symbol file. |
2015 | This PA file has already been processed to get its minimal symbols. | |
2016 | ||
2017 | OBJFILE is the object file we are reading symbols from. | |
2018 | ADDR is the address relative to which the symbols are (e.g. | |
2019 | the base address of the text segment). | |
2020 | MAINLINE is true if we are reading the main symbol | |
2021 | table (as opposed to a shared lib or dynamically loaded file). | |
2022 | ||
2023 | */ | |
2024 | ||
2025 | void | |
2026 | pastab_build_psymtabs (objfile, section_offsets, mainline) | |
2027 | struct objfile *objfile; | |
2028 | struct section_offsets *section_offsets; | |
2029 | int mainline; | |
2030 | { | |
2031 | free_header_files (); | |
2032 | init_header_files (); | |
2033 | ||
2034 | /* In a PA file, we've already installed the minimal symbols that came | |
2035 | from the PA (non-stab) symbol table, so always act like an | |
2036 | incremental load here. */ | |
2037 | ||
2038 | dbx_symfile_read (objfile, section_offsets, mainline); | |
2039 | } | |
2040 | \f | |
2af231b8 JG |
2041 | /* Parse the user's idea of an offset for dynamic linking, into our idea |
2042 | of how to represent it for fast symbol reading. */ | |
2043 | ||
040b9597 | 2044 | static struct section_offsets * |
2af231b8 JG |
2045 | dbx_symfile_offsets (objfile, addr) |
2046 | struct objfile *objfile; | |
2047 | CORE_ADDR addr; | |
2048 | { | |
2049 | struct section_offsets *section_offsets; | |
2050 | int i; | |
2051 | ||
2052 | section_offsets = (struct section_offsets *) | |
2053 | obstack_alloc (&objfile -> psymbol_obstack, | |
2054 | sizeof (struct section_offsets) + | |
2055 | sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1)); | |
2056 | ||
2057 | for (i = 0; i < SECT_OFF_MAX; i++) | |
2058 | ANOFFSET (section_offsets, i) = addr; | |
2059 | ||
2060 | return section_offsets; | |
9342ecb9 JG |
2061 | } |
2062 | \f | |
bd5635a1 RP |
2063 | /* Register our willingness to decode symbols for SunOS and a.out and |
2064 | b.out files handled by BFD... */ | |
80d68b1d FF |
2065 | static struct sym_fns sunos_sym_fns = |
2066 | { | |
2067 | "sunOs", /* sym_name: name or name prefix of BFD target type */ | |
2068 | 6, /* sym_namelen: number of significant sym_name chars */ | |
2069 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ | |
2070 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2071 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2072 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2af231b8 | 2073 | dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
80d68b1d FF |
2074 | NULL /* next: pointer to next struct sym_fns */ |
2075 | }; | |
bd5635a1 | 2076 | |
80d68b1d FF |
2077 | static struct sym_fns aout_sym_fns = |
2078 | { | |
2079 | "a.out", /* sym_name: name or name prefix of BFD target type */ | |
2080 | 5, /* sym_namelen: number of significant sym_name chars */ | |
2081 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ | |
2082 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2083 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2084 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2af231b8 | 2085 | dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
80d68b1d FF |
2086 | NULL /* next: pointer to next struct sym_fns */ |
2087 | }; | |
bd5635a1 | 2088 | |
80d68b1d FF |
2089 | static struct sym_fns bout_sym_fns = |
2090 | { | |
2091 | "b.out", /* sym_name: name or name prefix of BFD target type */ | |
2092 | 5, /* sym_namelen: number of significant sym_name chars */ | |
2093 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ | |
2094 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2095 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2096 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2af231b8 | 2097 | dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
80d68b1d FF |
2098 | NULL /* next: pointer to next struct sym_fns */ |
2099 | }; | |
bd5635a1 RP |
2100 | |
2101 | void | |
2102 | _initialize_dbxread () | |
2103 | { | |
2104 | add_symtab_fns(&sunos_sym_fns); | |
2105 | add_symtab_fns(&aout_sym_fns); | |
2106 | add_symtab_fns(&bout_sym_fns); | |
bd5635a1 | 2107 | } |