Commit | Line | Data |
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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> | |
bd5635a1 RP |
41 | #endif |
42 | ||
afe4ca15 JG |
43 | #include <obstack.h> |
44 | #include <sys/param.h> | |
021959e2 | 45 | #ifndef NO_SYS_FILE |
afe4ca15 | 46 | #include <sys/file.h> |
021959e2 | 47 | #endif |
afe4ca15 | 48 | #include <sys/stat.h> |
bd5635a1 | 49 | #include <ctype.h> |
afe4ca15 JG |
50 | #include "symtab.h" |
51 | #include "breakpoint.h" | |
52 | #include "command.h" | |
53 | #include "target.h" | |
54 | #include "gdbcore.h" /* for bfd stuff */ | |
ac88ca20 | 55 | #include "libbfd.h" /* FIXME Secret internal BFD stuff (bfd_read) */ |
afe4ca15 JG |
56 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
57 | #include "symfile.h" | |
3624c875 | 58 | #include "objfiles.h" |
c0302457 | 59 | #include "buildsym.h" |
3416d90b | 60 | #include "stabsread.h" |
2af231b8 | 61 | #include "gdb-stabs.h" |
3416d90b | 62 | #include "demangle.h" |
51b80b00 FF |
63 | #include "language.h" /* Needed inside partial-stab.h */ |
64 | #include "complaints.h" | |
afe4ca15 | 65 | |
7e258d18 PB |
66 | #include "aout/aout64.h" |
67 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */ | |
bd5635a1 | 68 | |
2c7ab4ca JK |
69 | #if !defined (SEEK_SET) |
70 | #define SEEK_SET 0 | |
71 | #define SEEK_CUR 1 | |
72 | #endif | |
73 | ||
4a35d6e9 FF |
74 | /* Each partial symbol table entry contains a pointer to private data for the |
75 | read_symtab() function to use when expanding a partial symbol table entry | |
76 | to a full symbol table entry. | |
77 | ||
78 | For dbxread this structure contains the offset within the file symbol table | |
79 | of first local symbol for this file, and length (in bytes) of the section | |
80 | of the symbol table devoted to this file's symbols (actually, the section | |
9342ecb9 JG |
81 | bracketed may contain more than just this file's symbols). It also contains |
82 | further information needed to locate the symbols if they are in an ELF file. | |
83 | ||
84 | If ldsymlen is 0, the only reason for this thing's existence is the | |
85 | dependency list. Nothing else will happen when it is read in. */ | |
4a35d6e9 FF |
86 | |
87 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) | |
88 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
9342ecb9 JG |
89 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) |
90 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
91 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
92 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
93 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
4a35d6e9 FF |
94 | |
95 | struct symloc { | |
96 | int ldsymoff; | |
97 | int ldsymlen; | |
9342ecb9 JG |
98 | int symbol_size; |
99 | int symbol_offset; | |
100 | int string_offset; | |
101 | int file_string_offset; | |
4a35d6e9 FF |
102 | }; |
103 | ||
bd5635a1 RP |
104 | /* Macro to determine which symbols to ignore when reading the first symbol |
105 | of a file. Some machines override this definition. */ | |
106 | #ifndef IGNORE_SYMBOL | |
107 | /* This code is used on Ultrix systems. Ignore it */ | |
108 | #define IGNORE_SYMBOL(type) (type == (int)N_NSYMS) | |
109 | #endif | |
110 | ||
111 | /* Macro for name of symbol to indicate a file compiled with gcc. */ | |
112 | #ifndef GCC_COMPILED_FLAG_SYMBOL | |
113 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." | |
114 | #endif | |
115 | ||
0cf9329b PB |
116 | /* Macro for name of symbol to indicate a file compiled with gcc2. */ |
117 | #ifndef GCC2_COMPILED_FLAG_SYMBOL | |
118 | #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled." | |
119 | #endif | |
120 | ||
bd5635a1 RP |
121 | /* Define this as 1 if a pcc declaration of a char or short argument |
122 | gives the correct address. Otherwise assume pcc gives the | |
123 | address of the corresponding int, which is not the same on a | |
124 | big-endian machine. */ | |
125 | ||
126 | #ifndef BELIEVE_PCC_PROMOTION | |
127 | #define BELIEVE_PCC_PROMOTION 0 | |
128 | #endif | |
c0302457 | 129 | |
2e4964ad FF |
130 | /* Remember what we deduced to be the source language of this psymtab. */ |
131 | ||
132 | static enum language psymtab_language = language_unknown; | |
133 | ||
bd5635a1 RP |
134 | /* Nonzero means give verbose info on gdb action. From main.c. */ |
135 | extern int info_verbose; | |
136 | ||
7d9884b9 | 137 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
bd5635a1 | 138 | |
c0302457 | 139 | static bfd *symfile_bfd; |
bd5635a1 | 140 | |
afe4ca15 JG |
141 | /* The size of each symbol in the symbol file (in external form). |
142 | This is set by dbx_symfile_read when building psymtabs, and by | |
143 | dbx_psymtab_to_symtab when building symtabs. */ | |
144 | ||
145 | static unsigned symbol_size; | |
146 | ||
9342ecb9 JG |
147 | /* This is the offset of the symbol table in the executable file */ |
148 | static unsigned symbol_table_offset; | |
149 | ||
150 | /* This is the offset of the string table in the executable file */ | |
151 | static unsigned string_table_offset; | |
152 | ||
153 | /* For elf+stab executables, the n_strx field is not a simple index | |
154 | into the string table. Instead, each .o file has a base offset | |
155 | in the string table, and the associated symbols contain offsets | |
156 | from this base. The following two variables contain the base | |
157 | offset for the current and next .o files. */ | |
158 | static unsigned int file_string_table_offset; | |
159 | static unsigned int next_file_string_table_offset; | |
160 | ||
bd5635a1 RP |
161 | /* Complaints about the symbols we have encountered. */ |
162 | ||
bd5635a1 RP |
163 | struct complaint lbrac_complaint = |
164 | {"bad block start address patched", 0, 0}; | |
165 | ||
bd5635a1 RP |
166 | struct complaint string_table_offset_complaint = |
167 | {"bad string table offset in symbol %d", 0, 0}; | |
168 | ||
169 | struct complaint unknown_symtype_complaint = | |
0c4d2cc2 | 170 | {"unknown symbol type %s", 0, 0}; |
bd5635a1 | 171 | |
65ce5df4 JG |
172 | struct complaint unknown_symchar_complaint = |
173 | {"unknown symbol type character `%c'", 0, 0}; | |
174 | ||
bd5635a1 RP |
175 | struct complaint lbrac_rbrac_complaint = |
176 | {"block start larger than block end", 0, 0}; | |
7d9884b9 JG |
177 | |
178 | struct complaint lbrac_unmatched_complaint = | |
179 | {"unmatched N_LBRAC before symtab pos %d", 0, 0}; | |
180 | ||
181 | struct complaint lbrac_mismatch_complaint = | |
182 | {"N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", 0, 0}; | |
9342ecb9 JG |
183 | |
184 | struct complaint repeated_header_complaint = | |
185 | {"\"repeated\" header file not previously seen, at symtab pos %d", 0, 0}; | |
186 | ||
187 | struct complaint repeated_header_name_complaint = | |
188 | {"\"repeated\" header file not previously seen, named %s", 0, 0}; | |
bd5635a1 | 189 | \f |
bd5635a1 RP |
190 | /* During initial symbol readin, we need to have a structure to keep |
191 | track of which psymtabs have which bincls in them. This structure | |
192 | is used during readin to setup the list of dependencies within each | |
193 | partial symbol table. */ | |
194 | ||
195 | struct header_file_location | |
196 | { | |
197 | char *name; /* Name of header file */ | |
198 | int instance; /* See above */ | |
199 | struct partial_symtab *pst; /* Partial symtab that has the | |
200 | BINCL/EINCL defs for this file */ | |
201 | }; | |
202 | ||
203 | /* The actual list and controling variables */ | |
204 | static struct header_file_location *bincl_list, *next_bincl; | |
205 | static int bincls_allocated; | |
206 | ||
021959e2 JG |
207 | /* Local function prototypes */ |
208 | ||
209 | static void | |
80d68b1d FF |
210 | free_header_files PARAMS ((void)); |
211 | ||
212 | static void | |
213 | init_header_files PARAMS ((void)); | |
021959e2 JG |
214 | |
215 | static struct pending * | |
216 | copy_pending PARAMS ((struct pending *, int, struct pending *)); | |
217 | ||
574dac8e JK |
218 | static void |
219 | read_ofile_symtab PARAMS ((struct partial_symtab *)); | |
021959e2 JG |
220 | |
221 | static void | |
222 | dbx_psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
223 | ||
224 | static void | |
4c07f28d | 225 | dbx_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *)); |
021959e2 JG |
226 | |
227 | static void | |
2af231b8 JG |
228 | read_dbx_symtab PARAMS ((struct section_offsets *, struct objfile *, |
229 | CORE_ADDR, int)); | |
021959e2 JG |
230 | |
231 | static void | |
232 | free_bincl_list PARAMS ((struct objfile *)); | |
233 | ||
234 | static struct partial_symtab * | |
235 | find_corresponding_bincl_psymtab PARAMS ((char *, int)); | |
236 | ||
237 | static void | |
238 | add_bincl_to_list PARAMS ((struct partial_symtab *, char *, int)); | |
239 | ||
240 | static void | |
241 | init_bincl_list PARAMS ((int, struct objfile *)); | |
242 | ||
243 | static void | |
3624c875 | 244 | init_psymbol_list PARAMS ((struct objfile *)); |
021959e2 JG |
245 | |
246 | static char * | |
247 | dbx_next_symbol_text PARAMS ((void)); | |
248 | ||
249 | static void | |
250 | fill_symbuf PARAMS ((bfd *)); | |
251 | ||
252 | static void | |
80d68b1d FF |
253 | dbx_symfile_init PARAMS ((struct objfile *)); |
254 | ||
255 | static void | |
256 | dbx_new_init PARAMS ((struct objfile *)); | |
021959e2 JG |
257 | |
258 | static void | |
2af231b8 | 259 | dbx_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); |
021959e2 JG |
260 | |
261 | static void | |
80d68b1d | 262 | dbx_symfile_finish PARAMS ((struct objfile *)); |
021959e2 JG |
263 | |
264 | static void | |
265 | record_minimal_symbol PARAMS ((char *, CORE_ADDR, int, struct objfile *)); | |
266 | ||
267 | static void | |
268 | add_new_header_file PARAMS ((char *, int)); | |
269 | ||
270 | static void | |
271 | add_old_header_file PARAMS ((char *, int)); | |
272 | ||
273 | static void | |
274 | add_this_object_header_file PARAMS ((int)); | |
275 | ||
80d68b1d | 276 | /* Free up old header file tables */ |
bd5635a1 | 277 | |
021959e2 | 278 | static void |
80d68b1d | 279 | free_header_files () |
bd5635a1 RP |
280 | { |
281 | register int i; | |
bd5635a1 | 282 | |
80d68b1d FF |
283 | if (header_files != NULL) |
284 | { | |
285 | for (i = 0; i < n_header_files; i++) | |
286 | { | |
287 | free (header_files[i].name); | |
288 | } | |
ac88ca20 | 289 | free ((PTR)header_files); |
80d68b1d FF |
290 | header_files = NULL; |
291 | n_header_files = 0; | |
292 | } | |
293 | if (this_object_header_files) | |
294 | { | |
ac88ca20 | 295 | free ((PTR)this_object_header_files); |
80d68b1d FF |
296 | this_object_header_files = NULL; |
297 | } | |
298 | n_allocated_header_files = 0; | |
299 | n_allocated_this_object_header_files = 0; | |
300 | } | |
301 | ||
302 | /* Allocate new header file tables */ | |
303 | ||
304 | static void | |
305 | init_header_files () | |
306 | { | |
bd5635a1 | 307 | n_header_files = 0; |
80d68b1d FF |
308 | n_allocated_header_files = 10; |
309 | header_files = (struct header_file *) | |
310 | xmalloc (10 * sizeof (struct header_file)); | |
bd5635a1 RP |
311 | |
312 | n_allocated_this_object_header_files = 10; | |
313 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); | |
314 | } | |
315 | ||
bd5635a1 RP |
316 | /* Add header file number I for this object file |
317 | at the next successive FILENUM. */ | |
318 | ||
319 | static void | |
320 | add_this_object_header_file (i) | |
321 | int i; | |
322 | { | |
323 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
324 | { | |
325 | n_allocated_this_object_header_files *= 2; | |
326 | this_object_header_files | |
021959e2 | 327 | = (int *) xrealloc ((char *) this_object_header_files, |
bd5635a1 RP |
328 | n_allocated_this_object_header_files * sizeof (int)); |
329 | } | |
330 | ||
331 | this_object_header_files[n_this_object_header_files++] = i; | |
332 | } | |
333 | ||
334 | /* Add to this file an "old" header file, one already seen in | |
335 | a previous object file. NAME is the header file's name. | |
336 | INSTANCE is its instance code, to select among multiple | |
337 | symbol tables for the same header file. */ | |
338 | ||
339 | static void | |
340 | add_old_header_file (name, instance) | |
341 | char *name; | |
342 | int instance; | |
343 | { | |
344 | register struct header_file *p = header_files; | |
345 | register int i; | |
346 | ||
347 | for (i = 0; i < n_header_files; i++) | |
2e4964ad | 348 | if (STREQ (p[i].name, name) && instance == p[i].instance) |
bd5635a1 RP |
349 | { |
350 | add_this_object_header_file (i); | |
351 | return; | |
352 | } | |
51b80b00 | 353 | complain (&repeated_header_complaint, symnum); |
9342ecb9 | 354 | complain (&repeated_header_name_complaint, name); |
bd5635a1 RP |
355 | } |
356 | ||
357 | /* Add to this file a "new" header file: definitions for its types follow. | |
358 | NAME is the header file's name. | |
359 | Most often this happens only once for each distinct header file, | |
360 | but not necessarily. If it happens more than once, INSTANCE has | |
361 | a different value each time, and references to the header file | |
362 | use INSTANCE values to select among them. | |
363 | ||
364 | dbx output contains "begin" and "end" markers for each new header file, | |
365 | but at this level we just need to know which files there have been; | |
366 | so we record the file when its "begin" is seen and ignore the "end". */ | |
367 | ||
368 | static void | |
369 | add_new_header_file (name, instance) | |
370 | char *name; | |
371 | int instance; | |
372 | { | |
373 | register int i; | |
bd5635a1 RP |
374 | |
375 | /* Make sure there is room for one more header file. */ | |
376 | ||
377 | if (n_header_files == n_allocated_header_files) | |
378 | { | |
379 | n_allocated_header_files *= 2; | |
380 | header_files = (struct header_file *) | |
021959e2 JG |
381 | xrealloc ((char *) header_files, |
382 | (n_allocated_header_files * sizeof (struct header_file))); | |
bd5635a1 RP |
383 | } |
384 | ||
385 | /* Create an entry for this header file. */ | |
386 | ||
387 | i = n_header_files++; | |
388 | header_files[i].name = savestring (name, strlen(name)); | |
389 | header_files[i].instance = instance; | |
390 | header_files[i].length = 10; | |
391 | header_files[i].vector | |
392 | = (struct type **) xmalloc (10 * sizeof (struct type *)); | |
4ed3a9ea | 393 | memset (header_files[i].vector, 0, 10 * sizeof (struct type *)); |
bd5635a1 RP |
394 | |
395 | add_this_object_header_file (i); | |
396 | } | |
397 | ||
bd5635a1 RP |
398 | #if 0 |
399 | static struct type ** | |
400 | explicit_lookup_type (real_filenum, index) | |
401 | int real_filenum, index; | |
402 | { | |
403 | register struct header_file *f = &header_files[real_filenum]; | |
404 | ||
405 | if (index >= f->length) | |
406 | { | |
407 | f->length *= 2; | |
408 | f->vector = (struct type **) | |
409 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
410 | bzero (&f->vector[f->length / 2], | |
411 | f->length * sizeof (struct type *) / 2); | |
412 | } | |
413 | return &f->vector[index]; | |
414 | } | |
415 | #endif | |
416 | \f | |
9bba3334 | 417 | static void |
021959e2 | 418 | record_minimal_symbol (name, address, type, objfile) |
bd5635a1 RP |
419 | char *name; |
420 | CORE_ADDR address; | |
421 | int type; | |
021959e2 | 422 | struct objfile *objfile; |
bd5635a1 | 423 | { |
021959e2 | 424 | enum minimal_symbol_type ms_type; |
0c4d2cc2 JG |
425 | |
426 | switch (type &~ N_EXT) { | |
021959e2 JG |
427 | case N_TEXT: ms_type = mst_text; break; |
428 | case N_DATA: ms_type = mst_data; break; | |
429 | case N_BSS: ms_type = mst_bss; break; | |
430 | case N_ABS: ms_type = mst_abs; break; | |
0c4d2cc2 | 431 | #ifdef N_SETV |
021959e2 | 432 | case N_SETV: ms_type = mst_data; break; |
0c4d2cc2 | 433 | #endif |
021959e2 | 434 | default: ms_type = mst_unknown; break; |
0c4d2cc2 | 435 | } |
bd5635a1 | 436 | |
021959e2 JG |
437 | prim_record_minimal_symbol (obsavestring (name, strlen (name), &objfile -> symbol_obstack), |
438 | address, ms_type); | |
bd5635a1 RP |
439 | } |
440 | \f | |
441 | /* Scan and build partial symbols for a symbol file. | |
442 | We have been initialized by a call to dbx_symfile_init, which | |
3624c875 FF |
443 | put all the relevant info into a "struct dbx_symfile_info", |
444 | hung off the objfile structure. | |
bd5635a1 | 445 | |
2af231b8 JG |
446 | SECTION_OFFSETS contains offsets relative to which the symbols in the |
447 | various sections are (depending where the sections were actually loaded). | |
bd5635a1 RP |
448 | MAINLINE is true if we are reading the main symbol |
449 | table (as opposed to a shared lib or dynamically loaded file). */ | |
450 | ||
9bba3334 | 451 | static void |
2af231b8 | 452 | dbx_symfile_read (objfile, section_offsets, mainline) |
80d68b1d | 453 | struct objfile *objfile; |
2af231b8 | 454 | struct section_offsets *section_offsets; |
bd5635a1 RP |
455 | int mainline; /* FIXME comments above */ |
456 | { | |
80d68b1d | 457 | bfd *sym_bfd; |
bd5635a1 | 458 | int val; |
bd5635a1 | 459 | |
80d68b1d | 460 | sym_bfd = objfile->obfd; |
2c7ab4ca | 461 | val = bfd_seek (objfile->obfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); |
bd5635a1 | 462 | if (val < 0) |
80d68b1d | 463 | perror_with_name (objfile->name); |
bd5635a1 | 464 | |
66eeea27 | 465 | /* If we are reinitializing, or if we have never loaded syms yet, init */ |
80d68b1d | 466 | if (mainline || objfile->global_psymbols.size == 0 || objfile->static_psymbols.size == 0) |
3624c875 | 467 | init_psymbol_list (objfile); |
66eeea27 | 468 | |
9342ecb9 JG |
469 | symbol_size = DBX_SYMBOL_SIZE (objfile); |
470 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
afe4ca15 | 471 | |
bd5635a1 RP |
472 | pending_blocks = 0; |
473 | make_cleanup (really_free_pendings, 0); | |
474 | ||
021959e2 JG |
475 | init_minimal_symbol_collection (); |
476 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
477 | |
478 | /* Now that the symbol table data of the executable file are all in core, | |
479 | process them and define symbols accordingly. */ | |
480 | ||
2af231b8 | 481 | read_dbx_symtab (section_offsets, objfile, |
3624c875 FF |
482 | bfd_section_vma (sym_bfd, DBX_TEXT_SECT (objfile)), |
483 | bfd_section_size (sym_bfd, DBX_TEXT_SECT (objfile))); | |
bd5635a1 | 484 | |
021959e2 JG |
485 | /* Install any minimal symbols that have been collected as the current |
486 | minimal symbols for this objfile. */ | |
bd5635a1 | 487 | |
80d68b1d | 488 | install_minimal_symbols (objfile); |
bd5635a1 | 489 | |
021959e2 | 490 | if (!have_partial_symbols ()) { |
9404978d MT |
491 | wrap_here (""); |
492 | printf_filtered ("(no debugging symbols found)..."); | |
493 | wrap_here (""); | |
494 | } | |
bd5635a1 RP |
495 | } |
496 | ||
9404978d MT |
497 | /* Initialize anything that needs initializing when a completely new |
498 | symbol file is specified (not just adding some symbols from another | |
499 | file, e.g. a shared library). */ | |
bd5635a1 | 500 | |
9bba3334 | 501 | static void |
ac88ca20 JG |
502 | dbx_new_init (ignore) |
503 | struct objfile *ignore; | |
bd5635a1 | 504 | { |
3416d90b | 505 | stabsread_new_init (); |
c0302457 | 506 | buildsym_new_init (); |
80d68b1d | 507 | init_header_files (); |
bd5635a1 RP |
508 | } |
509 | ||
510 | ||
511 | /* dbx_symfile_init () | |
512 | is the dbx-specific initialization routine for reading symbols. | |
80d68b1d | 513 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
514 | the BFD for the file whose symbols are being read, and a slot for a pointer |
515 | to "private data" which we fill with goodies. | |
516 | ||
517 | We read the string table into malloc'd space and stash a pointer to it. | |
518 | ||
519 | Since BFD doesn't know how to read debug symbols in a format-independent | |
520 | way (and may never do so...), we have to do it ourselves. We will never | |
521 | be called unless this is an a.out (or very similar) file. | |
522 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
523 | ||
69a272c4 FF |
524 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
525 | ||
9bba3334 | 526 | static void |
80d68b1d FF |
527 | dbx_symfile_init (objfile) |
528 | struct objfile *objfile; | |
bd5635a1 RP |
529 | { |
530 | int val; | |
80d68b1d | 531 | bfd *sym_bfd = objfile->obfd; |
bd5635a1 | 532 | char *name = bfd_get_filename (sym_bfd); |
69a272c4 | 533 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; |
bd5635a1 RP |
534 | |
535 | /* Allocate struct to keep track of the symfile */ | |
ac88ca20 | 536 | objfile->sym_private = (PTR) |
3624c875 | 537 | xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info)); |
bd5635a1 RP |
538 | |
539 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
bd5635a1 RP |
540 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
541 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
040b9597 | 542 | |
bd5635a1 RP |
543 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
544 | ||
784fd92b | 545 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; |
3624c875 FF |
546 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); |
547 | if (!DBX_TEXT_SECT (objfile)) | |
9342ecb9 JG |
548 | error ("Can't find .text section in symbol file"); |
549 | ||
bf18ac80 | 550 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); |
7da1e27d | 551 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); |
9342ecb9 | 552 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; |
3624c875 FF |
553 | |
554 | /* Read the string table and stash it away in the psymbol_obstack. It is | |
555 | only needed as long as we need to expand psymbols into full symbols, | |
556 | so when we blow away the psymbol the string table goes away as well. | |
557 | Note that gdb used to use the results of attempting to malloc the | |
558 | string table, based on the size it read, as a form of sanity check | |
559 | for botched byte swapping, on the theory that a byte swapped string | |
560 | table size would be so totally bogus that the malloc would fail. Now | |
561 | that we put in on the psymbol_obstack, we can't do this since gdb gets | |
562 | a fatal error (out of virtual memory) if the size is bogus. We can | |
69a272c4 FF |
563 | however at least check to see if the size is less than the size of |
564 | the size field itself, or larger than the size of the entire file. | |
565 | Note that all valid string tables have a size greater than zero, since | |
566 | the bytes used to hold the size are included in the count. */ | |
3624c875 | 567 | |
69a272c4 FF |
568 | if (STRING_TABLE_OFFSET == 0) |
569 | { | |
65ce5df4 JG |
570 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET |
571 | will never be zero, even when there is no string table. This | |
572 | would appear to be a bug in bfd. */ | |
69a272c4 FF |
573 | DBX_STRINGTAB_SIZE (objfile) = 0; |
574 | DBX_STRINGTAB (objfile) = NULL; | |
575 | } | |
576 | else | |
577 | { | |
2c7ab4ca | 578 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
69a272c4 FF |
579 | if (val < 0) |
580 | perror_with_name (name); | |
581 | ||
582 | memset ((PTR) size_temp, 0, sizeof (size_temp)); | |
583 | val = bfd_read ((PTR) size_temp, sizeof (size_temp), 1, sym_bfd); | |
584 | if (val < 0) | |
65ce5df4 JG |
585 | { |
586 | perror_with_name (name); | |
587 | } | |
588 | else if (val == 0) | |
589 | { | |
590 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
591 | EOF if there is no string table, and attempting to read the size | |
592 | from EOF will read zero bytes. */ | |
593 | DBX_STRINGTAB_SIZE (objfile) = 0; | |
594 | DBX_STRINGTAB (objfile) = NULL; | |
595 | } | |
596 | else | |
597 | { | |
598 | /* Read some data that would appear to be the string table size. | |
599 | If there really is a string table, then it is probably the right | |
600 | size. Byteswap if necessary and validate the size. Note that | |
601 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
602 | random data that happened to be at STRING_TABLE_OFFSET, because | |
603 | bfd can't tell us there is no string table, the sanity checks may | |
604 | or may not catch this. */ | |
605 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); | |
606 | ||
607 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) | |
608 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
609 | error ("ridiculous string table size (%d bytes).", | |
610 | DBX_STRINGTAB_SIZE (objfile)); | |
611 | ||
612 | DBX_STRINGTAB (objfile) = | |
613 | (char *) obstack_alloc (&objfile -> psymbol_obstack, | |
614 | DBX_STRINGTAB_SIZE (objfile)); | |
615 | ||
616 | /* Now read in the string table in one big gulp. */ | |
617 | ||
2c7ab4ca | 618 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
65ce5df4 JG |
619 | if (val < 0) |
620 | perror_with_name (name); | |
621 | val = bfd_read (DBX_STRINGTAB (objfile), DBX_STRINGTAB_SIZE (objfile), 1, | |
622 | sym_bfd); | |
623 | if (val != DBX_STRINGTAB_SIZE (objfile)) | |
624 | perror_with_name (name); | |
625 | } | |
69a272c4 | 626 | } |
bd5635a1 | 627 | } |
80d68b1d FF |
628 | |
629 | /* Perform any local cleanups required when we are done with a particular | |
630 | objfile. I.E, we are in the process of discarding all symbol information | |
631 | for an objfile, freeing up all memory held for it, and unlinking the | |
632 | objfile struct from the global list of known objfiles. */ | |
633 | ||
634 | static void | |
635 | dbx_symfile_finish (objfile) | |
636 | struct objfile *objfile; | |
637 | { | |
ac88ca20 | 638 | if (objfile->sym_private != NULL) |
80d68b1d | 639 | { |
ac88ca20 | 640 | mfree (objfile -> md, objfile->sym_private); |
80d68b1d FF |
641 | } |
642 | free_header_files (); | |
643 | } | |
644 | ||
bd5635a1 RP |
645 | \f |
646 | /* Buffer for reading the symbol table entries. */ | |
afe4ca15 | 647 | static struct internal_nlist symbuf[4096]; |
bd5635a1 RP |
648 | static int symbuf_idx; |
649 | static int symbuf_end; | |
650 | ||
9342ecb9 JG |
651 | /* Name of last function encountered. Used in Solaris to approximate |
652 | object file boundaries. */ | |
653 | static char *last_function_name; | |
654 | ||
bd5635a1 RP |
655 | /* The address in memory of the string table of the object file we are |
656 | reading (which might not be the "main" object file, but might be a | |
657 | shared library or some other dynamically loaded thing). This is set | |
658 | by read_dbx_symtab when building psymtabs, and by read_ofile_symtab | |
659 | when building symtabs, and is used only by next_symbol_text. */ | |
660 | static char *stringtab_global; | |
661 | ||
662 | /* Refill the symbol table input buffer | |
663 | and set the variables that control fetching entries from it. | |
664 | Reports an error if no data available. | |
665 | This function can read past the end of the symbol table | |
666 | (into the string table) but this does no harm. */ | |
667 | ||
7d9884b9 JG |
668 | static void |
669 | fill_symbuf (sym_bfd) | |
670 | bfd *sym_bfd; | |
bd5635a1 | 671 | { |
ac88ca20 | 672 | int nbytes = bfd_read ((PTR)symbuf, sizeof (symbuf), 1, sym_bfd); |
bd5635a1 | 673 | if (nbytes < 0) |
7d9884b9 | 674 | perror_with_name (bfd_get_filename (sym_bfd)); |
bd5635a1 RP |
675 | else if (nbytes == 0) |
676 | error ("Premature end of file reading symbol table"); | |
afe4ca15 | 677 | symbuf_end = nbytes / symbol_size; |
bd5635a1 | 678 | symbuf_idx = 0; |
bd5635a1 RP |
679 | } |
680 | ||
7d9884b9 | 681 | #define SWAP_SYMBOL(symp, abfd) \ |
bd5635a1 | 682 | { \ |
7d9884b9 | 683 | (symp)->n_strx = bfd_h_get_32(abfd, \ |
afe4ca15 | 684 | (unsigned char *)&(symp)->n_strx); \ |
7d9884b9 | 685 | (symp)->n_desc = bfd_h_get_16 (abfd, \ |
bd5635a1 | 686 | (unsigned char *)&(symp)->n_desc); \ |
7d9884b9 | 687 | (symp)->n_value = bfd_h_get_32 (abfd, \ |
bd5635a1 RP |
688 | (unsigned char *)&(symp)->n_value); \ |
689 | } | |
690 | ||
691 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
692 | that hasn't been swapped. Swap the symbol at the same time | |
693 | that symbuf_idx is incremented. */ | |
694 | ||
695 | /* dbx allows the text of a symbol name to be continued into the | |
696 | next symbol name! When such a continuation is encountered | |
697 | (a \ at the end of the text of a name) | |
698 | call this function to get the continuation. */ | |
699 | ||
021959e2 | 700 | static char * |
aab77d5f | 701 | dbx_next_symbol_text () |
bd5635a1 RP |
702 | { |
703 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 704 | fill_symbuf (symfile_bfd); |
bd5635a1 | 705 | symnum++; |
7d9884b9 | 706 | SWAP_SYMBOL(&symbuf[symbuf_idx], symfile_bfd); |
9342ecb9 JG |
707 | return symbuf[symbuf_idx++].n_strx + stringtab_global |
708 | + file_string_table_offset; | |
bd5635a1 RP |
709 | } |
710 | \f | |
711 | /* Initializes storage for all of the partial symbols that will be | |
712 | created by read_dbx_symtab and subsidiaries. */ | |
713 | ||
714 | static void | |
3624c875 | 715 | init_psymbol_list (objfile) |
021959e2 | 716 | struct objfile *objfile; |
bd5635a1 RP |
717 | { |
718 | /* Free any previously allocated psymbol lists. */ | |
021959e2 | 719 | if (objfile -> global_psymbols.list) |
ac88ca20 | 720 | mfree (objfile -> md, (PTR)objfile -> global_psymbols.list); |
021959e2 | 721 | if (objfile -> static_psymbols.list) |
ac88ca20 | 722 | mfree (objfile -> md, (PTR)objfile -> static_psymbols.list); |
bd5635a1 RP |
723 | |
724 | /* Current best guess is that there are approximately a twentieth | |
725 | of the total symbols (in a debugging file) are global or static | |
726 | oriented symbols */ | |
3624c875 FF |
727 | objfile -> global_psymbols.size = DBX_SYMCOUNT (objfile) / 10; |
728 | objfile -> static_psymbols.size = DBX_SYMCOUNT (objfile) / 10; | |
021959e2 | 729 | objfile -> global_psymbols.next = objfile -> global_psymbols.list = (struct partial_symbol *) |
318bf84f | 730 | xmmalloc (objfile -> md, objfile -> global_psymbols.size * sizeof (struct partial_symbol)); |
021959e2 | 731 | objfile -> static_psymbols.next = objfile -> static_psymbols.list = (struct partial_symbol *) |
318bf84f | 732 | xmmalloc (objfile -> md, objfile -> static_psymbols.size * sizeof (struct partial_symbol)); |
bd5635a1 RP |
733 | } |
734 | ||
735 | /* Initialize the list of bincls to contain none and have some | |
736 | allocated. */ | |
737 | ||
738 | static void | |
021959e2 | 739 | init_bincl_list (number, objfile) |
bd5635a1 | 740 | int number; |
021959e2 | 741 | struct objfile *objfile; |
bd5635a1 RP |
742 | { |
743 | bincls_allocated = number; | |
744 | next_bincl = bincl_list = (struct header_file_location *) | |
318bf84f | 745 | xmmalloc (objfile -> md, bincls_allocated * sizeof(struct header_file_location)); |
bd5635a1 RP |
746 | } |
747 | ||
748 | /* Add a bincl to the list. */ | |
749 | ||
750 | static void | |
751 | add_bincl_to_list (pst, name, instance) | |
752 | struct partial_symtab *pst; | |
753 | char *name; | |
754 | int instance; | |
755 | { | |
756 | if (next_bincl >= bincl_list + bincls_allocated) | |
757 | { | |
758 | int offset = next_bincl - bincl_list; | |
759 | bincls_allocated *= 2; | |
760 | bincl_list = (struct header_file_location *) | |
318bf84f | 761 | xmrealloc (pst->objfile->md, (char *)bincl_list, |
bd5635a1 RP |
762 | bincls_allocated * sizeof (struct header_file_location)); |
763 | next_bincl = bincl_list + offset; | |
764 | } | |
765 | next_bincl->pst = pst; | |
766 | next_bincl->instance = instance; | |
767 | next_bincl++->name = name; | |
768 | } | |
769 | ||
770 | /* Given a name, value pair, find the corresponding | |
771 | bincl in the list. Return the partial symtab associated | |
772 | with that header_file_location. */ | |
773 | ||
9bba3334 | 774 | static struct partial_symtab * |
bd5635a1 RP |
775 | find_corresponding_bincl_psymtab (name, instance) |
776 | char *name; | |
777 | int instance; | |
778 | { | |
779 | struct header_file_location *bincl; | |
780 | ||
781 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
782 | if (bincl->instance == instance | |
2e4964ad | 783 | && STREQ (name, bincl->name)) |
bd5635a1 RP |
784 | return bincl->pst; |
785 | ||
786 | return (struct partial_symtab *) 0; | |
787 | } | |
788 | ||
789 | /* Free the storage allocated for the bincl list. */ | |
790 | ||
791 | static void | |
021959e2 JG |
792 | free_bincl_list (objfile) |
793 | struct objfile *objfile; | |
bd5635a1 | 794 | { |
ac88ca20 | 795 | mfree (objfile -> md, (PTR)bincl_list); |
bd5635a1 RP |
796 | bincls_allocated = 0; |
797 | } | |
798 | ||
bd5635a1 RP |
799 | /* Given pointers to an a.out symbol table in core containing dbx |
800 | style data, setup partial_symtab's describing each source file for | |
3624c875 FF |
801 | which debugging information is available. |
802 | SYMFILE_NAME is the name of the file we are reading from | |
2af231b8 JG |
803 | and SECTION_OFFSETS is the set of offsets for the various sections |
804 | of the file (a set of zeros if the mainline program). */ | |
bd5635a1 RP |
805 | |
806 | static void | |
2af231b8 JG |
807 | read_dbx_symtab (section_offsets, objfile, text_addr, text_size) |
808 | struct section_offsets *section_offsets; | |
7d9884b9 | 809 | struct objfile *objfile; |
bd5635a1 RP |
810 | CORE_ADDR text_addr; |
811 | int text_size; | |
812 | { | |
ac88ca20 | 813 | register struct internal_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
bd5635a1 | 814 | register char *namestring; |
bd5635a1 RP |
815 | int nsl; |
816 | int past_first_source_file = 0; | |
817 | CORE_ADDR last_o_file_start = 0; | |
818 | struct cleanup *old_chain; | |
7d9884b9 | 819 | bfd *abfd; |
bd5635a1 RP |
820 | |
821 | /* End of the text segment of the executable file. */ | |
822 | CORE_ADDR end_of_text_addr; | |
823 | ||
824 | /* Current partial symtab */ | |
825 | struct partial_symtab *pst; | |
826 | ||
827 | /* List of current psymtab's include files */ | |
828 | char **psymtab_include_list; | |
829 | int includes_allocated; | |
830 | int includes_used; | |
831 | ||
832 | /* Index within current psymtab dependency list */ | |
833 | struct partial_symtab **dependency_list; | |
834 | int dependencies_used, dependencies_allocated; | |
835 | ||
9342ecb9 JG |
836 | /* FIXME. We probably want to change stringtab_global rather than add this |
837 | while processing every symbol entry. FIXME. */ | |
838 | file_string_table_offset = 0; | |
839 | next_file_string_table_offset = 0; | |
840 | ||
3624c875 | 841 | stringtab_global = DBX_STRINGTAB (objfile); |
bd5635a1 RP |
842 | |
843 | pst = (struct partial_symtab *) 0; | |
844 | ||
845 | includes_allocated = 30; | |
846 | includes_used = 0; | |
847 | psymtab_include_list = (char **) alloca (includes_allocated * | |
848 | sizeof (char *)); | |
849 | ||
850 | dependencies_allocated = 30; | |
851 | dependencies_used = 0; | |
852 | dependency_list = | |
853 | (struct partial_symtab **) alloca (dependencies_allocated * | |
854 | sizeof (struct partial_symtab *)); | |
855 | ||
7d9884b9 | 856 | old_chain = make_cleanup (free_objfile, objfile); |
bd5635a1 RP |
857 | |
858 | /* Init bincl list */ | |
021959e2 JG |
859 | init_bincl_list (20, objfile); |
860 | make_cleanup (free_bincl_list, objfile); | |
bd5635a1 | 861 | |
3416d90b | 862 | last_source_file = NULL; |
bd5635a1 RP |
863 | |
864 | #ifdef END_OF_TEXT_DEFAULT | |
865 | end_of_text_addr = END_OF_TEXT_DEFAULT; | |
866 | #else | |
2af231b8 JG |
867 | end_of_text_addr = text_addr + section_offsets->offsets[SECT_OFF_TEXT] |
868 | + text_size; /* Relocate */ | |
bd5635a1 RP |
869 | #endif |
870 | ||
7d9884b9 JG |
871 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ |
872 | abfd = objfile->obfd; | |
bd5635a1 | 873 | symbuf_end = symbuf_idx = 0; |
aab77d5f | 874 | next_symbol_text_func = dbx_next_symbol_text; |
bd5635a1 | 875 | |
3624c875 | 876 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
bd5635a1 RP |
877 | { |
878 | /* Get the symbol for this run and pull out some info */ | |
879 | QUIT; /* allow this to be interruptable */ | |
880 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 881 | fill_symbuf (abfd); |
bd5635a1 RP |
882 | bufp = &symbuf[symbuf_idx++]; |
883 | ||
884 | /* | |
885 | * Special case to speed up readin. | |
886 | */ | |
887 | if (bufp->n_type == (unsigned char)N_SLINE) continue; | |
888 | ||
7d9884b9 | 889 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 RP |
890 | |
891 | /* Ok. There is a lot of code duplicated in the rest of this | |
892 | switch statement (for efficiency reasons). Since I don't | |
893 | like duplicating code, I will do my penance here, and | |
894 | describe the code which is duplicated: | |
895 | ||
896 | *) The assignment to namestring. | |
897 | *) The call to strchr. | |
898 | *) The addition of a partial symbol the the two partial | |
899 | symbol lists. This last is a large section of code, so | |
900 | I've imbedded it in the following macro. | |
901 | */ | |
902 | ||
903 | /* Set namestring based on bufp. If the string table index is invalid, | |
904 | give a fake name, and print a single error message per symbol file read, | |
905 | rather than abort the symbol reading or flood the user with messages. */ | |
9342ecb9 JG |
906 | |
907 | /*FIXME: Too many adds and indirections in here for the inner loop. */ | |
bd5635a1 | 908 | #define SET_NAMESTRING()\ |
9342ecb9 JG |
909 | if (((unsigned)bufp->n_strx + file_string_table_offset) >= \ |
910 | DBX_STRINGTAB_SIZE (objfile)) { \ | |
51b80b00 | 911 | complain (&string_table_offset_complaint, symnum); \ |
bd5635a1 RP |
912 | namestring = "foo"; \ |
913 | } else \ | |
9342ecb9 JG |
914 | namestring = bufp->n_strx + file_string_table_offset + \ |
915 | DBX_STRINGTAB (objfile) | |
bd5635a1 | 916 | |
7e258d18 PB |
917 | #define CUR_SYMBOL_TYPE bufp->n_type |
918 | #define CUR_SYMBOL_VALUE bufp->n_value | |
919 | #define DBXREAD_ONLY | |
2af231b8 JG |
920 | #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\ |
921 | start_psymtab(ofile, secoff, fname, low, symoff, global_syms, static_syms) | |
7e258d18 PB |
922 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)\ |
923 | end_psymtab(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) | |
aab77d5f | 924 | |
7e258d18 | 925 | #include "partial-stab.h" |
bd5635a1 RP |
926 | } |
927 | ||
928 | /* If there's stuff to be cleaned up, clean it up. */ | |
3624c875 | 929 | if (DBX_SYMCOUNT (objfile) > 0 /* We have some syms */ |
9342ecb9 JG |
930 | /*FIXME, does this have a bug at start address 0? */ |
931 | && last_o_file_start | |
3624c875 FF |
932 | && objfile -> ei.entry_point < bufp->n_value |
933 | && objfile -> ei.entry_point >= last_o_file_start) | |
bd5635a1 | 934 | { |
3624c875 FF |
935 | objfile -> ei.entry_file_lowpc = last_o_file_start; |
936 | objfile -> ei.entry_file_highpc = bufp->n_value; | |
bd5635a1 RP |
937 | } |
938 | ||
939 | if (pst) | |
940 | { | |
941 | end_psymtab (pst, psymtab_include_list, includes_used, | |
afe4ca15 | 942 | symnum * symbol_size, end_of_text_addr, |
7e258d18 | 943 | dependency_list, dependencies_used); |
bd5635a1 RP |
944 | } |
945 | ||
021959e2 | 946 | free_bincl_list (objfile); |
bd5635a1 RP |
947 | discard_cleanups (old_chain); |
948 | } | |
949 | ||
4a35d6e9 FF |
950 | /* Allocate and partially fill a partial symtab. It will be |
951 | completely filled at the end of the symbol list. | |
952 | ||
953 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
954 | is the address relative to which its symbols are (incremental) or 0 | |
955 | (normal). */ | |
956 | ||
bd5635a1 | 957 | |
7e258d18 | 958 | struct partial_symtab * |
2af231b8 | 959 | start_psymtab (objfile, section_offsets, |
bd5635a1 | 960 | filename, textlow, ldsymoff, global_syms, static_syms) |
7d9884b9 | 961 | struct objfile *objfile; |
2af231b8 | 962 | struct section_offsets *section_offsets; |
bd5635a1 RP |
963 | char *filename; |
964 | CORE_ADDR textlow; | |
965 | int ldsymoff; | |
966 | struct partial_symbol *global_syms; | |
967 | struct partial_symbol *static_syms; | |
968 | { | |
969 | struct partial_symtab *result = | |
2af231b8 | 970 | start_psymtab_common(objfile, section_offsets, |
021959e2 | 971 | filename, textlow, global_syms, static_syms); |
bd5635a1 | 972 | |
021959e2 JG |
973 | result->read_symtab_private = (char *) |
974 | obstack_alloc (&objfile -> psymbol_obstack, sizeof (struct symloc)); | |
975 | LDSYMOFF(result) = ldsymoff; | |
bd5635a1 | 976 | result->read_symtab = dbx_psymtab_to_symtab; |
9342ecb9 JG |
977 | SYMBOL_SIZE(result) = symbol_size; |
978 | SYMBOL_OFFSET(result) = symbol_table_offset; | |
979 | STRING_OFFSET(result) = string_table_offset; | |
980 | FILE_STRING_OFFSET(result) = file_string_table_offset; | |
bd5635a1 | 981 | |
2af231b8 JG |
982 | /* If we're handling an ELF file, drag some section-relocation info |
983 | for this source file out of the ELF symbol table, to compensate for | |
984 | Sun brain death. This replaces the section_offsets in this psymtab, | |
985 | if successful. */ | |
986 | elfstab_offset_sections (objfile, result); | |
987 | ||
2e4964ad FF |
988 | /* Deduce the source language from the filename for this psymtab. */ |
989 | psymtab_language = deduce_language_from_filename (filename); | |
990 | ||
bd5635a1 RP |
991 | return result; |
992 | } | |
993 | ||
bd5635a1 RP |
994 | /* Close off the current usage of a partial_symbol table entry. This |
995 | involves setting the correct number of includes (with a realloc), | |
996 | setting the high text mark, setting the symbol length in the | |
997 | executable, and setting the length of the global and static lists | |
998 | of psymbols. | |
999 | ||
1000 | The global symbols and static symbols are then seperately sorted. | |
1001 | ||
1002 | Then the partial symtab is put on the global list. | |
1003 | *** List variables and peculiarities of same. *** | |
1004 | */ | |
021959e2 | 1005 | |
7e258d18 | 1006 | void |
bd5635a1 | 1007 | end_psymtab (pst, include_list, num_includes, capping_symbol_offset, |
7e258d18 | 1008 | capping_text, dependency_list, number_dependencies) |
bd5635a1 RP |
1009 | struct partial_symtab *pst; |
1010 | char **include_list; | |
1011 | int num_includes; | |
1012 | int capping_symbol_offset; | |
1013 | CORE_ADDR capping_text; | |
1014 | struct partial_symtab **dependency_list; | |
1015 | int number_dependencies; | |
7e258d18 | 1016 | /* struct partial_symbol *capping_global, *capping_static;*/ |
bd5635a1 RP |
1017 | { |
1018 | int i; | |
9342ecb9 | 1019 | struct partial_symtab *p1; |
021959e2 | 1020 | struct objfile *objfile = pst -> objfile; |
bd5635a1 | 1021 | |
7e258d18 PB |
1022 | if (capping_symbol_offset != -1) |
1023 | LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst); | |
bd5635a1 RP |
1024 | pst->texthigh = capping_text; |
1025 | ||
9342ecb9 JG |
1026 | /* Under Solaris, the N_SO symbols always have a value of 0, |
1027 | instead of the usual address of the .o file. Therefore, | |
1028 | we have to do some tricks to fill in texthigh and textlow. | |
1029 | The first trick is in partial-stab.h: if we see a static | |
1030 | or global function, and the textlow for the current pst | |
1031 | is still 0, then we use that function's address for | |
1032 | the textlow of the pst. | |
1033 | ||
1034 | Now, to fill in texthigh, we remember the last function seen | |
1035 | in the .o file (also in partial-stab.h). Also, there's a hack in | |
1036 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field | |
1037 | to here via the misc_info field. Therefore, we can fill in | |
1038 | a reliable texthigh by taking the address plus size of the | |
1039 | last function in the file. | |
1040 | ||
1041 | Unfortunately, that does not cover the case where the last function | |
1042 | in the file is static. See the paragraph below for more comments | |
1043 | on this situation. | |
1044 | ||
1045 | Finally, if we have a valid textlow for the current file, we run | |
1046 | down the partial_symtab_list filling in previous texthighs that | |
1047 | are still unknown. */ | |
1048 | ||
bcbf9559 | 1049 | if (pst->texthigh == 0 && last_function_name) { |
9342ecb9 JG |
1050 | char *p; |
1051 | int n; | |
1052 | struct minimal_symbol *minsym; | |
1053 | ||
1054 | p = strchr (last_function_name, ':'); | |
1055 | if (p == NULL) | |
1056 | p = last_function_name; | |
1057 | n = p - last_function_name; | |
1058 | p = alloca (n + 1); | |
1059 | strncpy (p, last_function_name, n); | |
1060 | p[n] = 0; | |
1061 | ||
1062 | minsym = lookup_minimal_symbol (p, objfile); | |
1063 | ||
1064 | if (minsym) { | |
2e4964ad FF |
1065 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + |
1066 | (int) MSYMBOL_INFO (minsym); | |
9342ecb9 JG |
1067 | } else { |
1068 | /* This file ends with a static function, and it's | |
1069 | difficult to imagine how hard it would be to track down | |
1070 | the elf symbol. Luckily, most of the time no one will notice, | |
1071 | since the next file will likely be compiled with -g, so | |
1072 | the code below will copy the first fuction's start address | |
1073 | back to our texthigh variable. (Also, if this file is the | |
1074 | last one in a dynamically linked program, texthigh already | |
1075 | has the right value.) If the next file isn't compiled | |
1076 | with -g, then the last function in this file winds up owning | |
1077 | all of the text space up to the next -g file, or the end (minus | |
1078 | shared libraries). This only matters for single stepping, | |
1079 | and even then it will still work, except that it will single | |
1080 | step through all of the covered functions, instead of setting | |
1081 | breakpoints around them as it usualy does. This makes it | |
1082 | pretty slow, but at least it doesn't fail. | |
1083 | ||
1084 | We can fix this with a fairly big change to bfd, but we need | |
1085 | to coordinate better with Cygnus if we want to do that. FIXME. */ | |
1086 | } | |
1087 | last_function_name = NULL; | |
1088 | } | |
1089 | ||
1090 | /* this test will be true if the last .o file is only data */ | |
1091 | if (pst->textlow == 0) | |
1092 | pst->textlow = pst->texthigh; | |
1093 | ||
bcbf9559 JG |
1094 | /* If we know our own starting text address, then walk through all other |
1095 | psymtabs for this objfile, and if any didn't know their ending text | |
1096 | address, set it to our starting address. Take care to not set our | |
1097 | own ending address to our starting address, nor to set addresses on | |
1098 | `dependency' files that have both textlow and texthigh zero. */ | |
9342ecb9 JG |
1099 | if (pst->textlow) { |
1100 | ALL_OBJFILE_PSYMTABS (objfile, p1) { | |
bcbf9559 | 1101 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) { |
9342ecb9 JG |
1102 | p1->texthigh = pst->textlow; |
1103 | /* if this file has only data, then make textlow match texthigh */ | |
1104 | if (p1->textlow == 0) | |
1105 | p1->textlow = p1->texthigh; | |
1106 | } | |
1107 | } | |
1108 | } | |
1109 | ||
1110 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
1111 | ||
1112 | ||
bd5635a1 | 1113 | pst->n_global_syms = |
021959e2 | 1114 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); |
bd5635a1 | 1115 | pst->n_static_syms = |
021959e2 | 1116 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); |
bd5635a1 RP |
1117 | |
1118 | pst->number_of_dependencies = number_dependencies; | |
1119 | if (number_dependencies) | |
1120 | { | |
1121 | pst->dependencies = (struct partial_symtab **) | |
021959e2 | 1122 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 | 1123 | number_dependencies * sizeof (struct partial_symtab *)); |
7e258d18 | 1124 | memcpy (pst->dependencies, dependency_list, |
bd5635a1 RP |
1125 | number_dependencies * sizeof (struct partial_symtab *)); |
1126 | } | |
1127 | else | |
1128 | pst->dependencies = 0; | |
1129 | ||
1130 | for (i = 0; i < num_includes; i++) | |
1131 | { | |
bd5635a1 | 1132 | struct partial_symtab *subpst = |
021959e2 | 1133 | allocate_psymtab (include_list[i], objfile); |
7d9884b9 | 1134 | |
2af231b8 | 1135 | subpst->section_offsets = pst->section_offsets; |
021959e2 JG |
1136 | subpst->read_symtab_private = |
1137 | (char *) obstack_alloc (&objfile->psymbol_obstack, | |
1138 | sizeof (struct symloc)); | |
4a35d6e9 FF |
1139 | LDSYMOFF(subpst) = |
1140 | LDSYMLEN(subpst) = | |
bd5635a1 RP |
1141 | subpst->textlow = |
1142 | subpst->texthigh = 0; | |
1143 | ||
3f83182d JG |
1144 | /* We could save slight bits of space by only making one of these, |
1145 | shared by the entire set of include files. FIXME-someday. */ | |
bd5635a1 | 1146 | subpst->dependencies = (struct partial_symtab **) |
021959e2 | 1147 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 RP |
1148 | sizeof (struct partial_symtab *)); |
1149 | subpst->dependencies[0] = pst; | |
1150 | subpst->number_of_dependencies = 1; | |
1151 | ||
1152 | subpst->globals_offset = | |
1153 | subpst->n_global_syms = | |
1154 | subpst->statics_offset = | |
1155 | subpst->n_static_syms = 0; | |
1156 | ||
1157 | subpst->readin = 0; | |
9a822037 | 1158 | subpst->symtab = 0; |
2707b48a | 1159 | subpst->read_symtab = pst->read_symtab; |
bd5635a1 RP |
1160 | } |
1161 | ||
021959e2 | 1162 | sort_pst_symbols (pst); |
bd5635a1 | 1163 | |
f9623881 JG |
1164 | /* If there is already a psymtab or symtab for a file of this name, remove it. |
1165 | (If there is a symtab, more drastic things also happen.) | |
1166 | This happens in VxWorks. */ | |
1167 | free_named_symtabs (pst->filename); | |
1168 | ||
7d9884b9 JG |
1169 | if (num_includes == 0 |
1170 | && number_dependencies == 0 | |
1171 | && pst->n_global_syms == 0 | |
1172 | && pst->n_static_syms == 0) { | |
1173 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
1174 | it is on the obstack, but we can forget to chain it on the list. */ | |
318bf84f FF |
1175 | struct partial_symtab *prev_pst; |
1176 | ||
1177 | /* First, snip it out of the psymtab chain */ | |
1178 | ||
1179 | if (pst->objfile->psymtabs == pst) | |
1180 | pst->objfile->psymtabs = pst->next; | |
1181 | else | |
1182 | for (prev_pst = pst->objfile->psymtabs; prev_pst; prev_pst = pst->next) | |
1183 | if (prev_pst->next == pst) | |
1184 | prev_pst->next = pst->next; | |
1185 | ||
1186 | /* Next, put it on a free list for recycling */ | |
1187 | ||
1188 | pst->next = pst->objfile->free_psymtabs; | |
1189 | pst->objfile->free_psymtabs = pst; | |
7d9884b9 | 1190 | } |
bd5635a1 RP |
1191 | } |
1192 | \f | |
1193 | static void | |
4c07f28d | 1194 | dbx_psymtab_to_symtab_1 (pst) |
bd5635a1 | 1195 | struct partial_symtab *pst; |
bd5635a1 RP |
1196 | { |
1197 | struct cleanup *old_chain; | |
1198 | int i; | |
1199 | ||
1200 | if (!pst) | |
1201 | return; | |
1202 | ||
1203 | if (pst->readin) | |
1204 | { | |
1205 | fprintf (stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1206 | pst->filename); | |
1207 | return; | |
1208 | } | |
1209 | ||
afe4ca15 | 1210 | /* Read in all partial symtabs on which this one is dependent */ |
bd5635a1 RP |
1211 | for (i = 0; i < pst->number_of_dependencies; i++) |
1212 | if (!pst->dependencies[i]->readin) | |
1213 | { | |
1214 | /* Inform about additional files that need to be read in. */ | |
1215 | if (info_verbose) | |
1216 | { | |
1217 | fputs_filtered (" ", stdout); | |
1218 | wrap_here (""); | |
1219 | fputs_filtered ("and ", stdout); | |
1220 | wrap_here (""); | |
1221 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
1222 | wrap_here (""); /* Flush output */ | |
1223 | fflush (stdout); | |
1224 | } | |
4c07f28d | 1225 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); |
bd5635a1 RP |
1226 | } |
1227 | ||
4a35d6e9 | 1228 | if (LDSYMLEN(pst)) /* Otherwise it's a dummy */ |
bd5635a1 RP |
1229 | { |
1230 | /* Init stuff necessary for reading in symbols */ | |
3416d90b | 1231 | stabsread_init (); |
c0302457 | 1232 | buildsym_init (); |
bd5635a1 | 1233 | old_chain = make_cleanup (really_free_pendings, 0); |
9342ecb9 | 1234 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
4c07f28d FF |
1235 | symbol_size = SYMBOL_SIZE (pst); |
1236 | ||
1237 | /* Read in this file's symbols */ | |
2c7ab4ca | 1238 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); |
574dac8e | 1239 | read_ofile_symtab (pst); |
9404978d | 1240 | sort_symtab_syms (pst->symtab); |
bd5635a1 RP |
1241 | |
1242 | do_cleanups (old_chain); | |
1243 | } | |
1244 | ||
1245 | pst->readin = 1; | |
1246 | } | |
1247 | ||
ac88ca20 JG |
1248 | /* Read in all of the symbols for a given psymtab for real. |
1249 | Be verbose about it if the user wants that. */ | |
1250 | ||
bd5635a1 RP |
1251 | static void |
1252 | dbx_psymtab_to_symtab (pst) | |
1253 | struct partial_symtab *pst; | |
1254 | { | |
bd5635a1 | 1255 | bfd *sym_bfd; |
bd5635a1 RP |
1256 | |
1257 | if (!pst) | |
1258 | return; | |
1259 | ||
1260 | if (pst->readin) | |
1261 | { | |
1262 | fprintf (stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1263 | pst->filename); | |
1264 | return; | |
1265 | } | |
1266 | ||
4a35d6e9 | 1267 | if (LDSYMLEN(pst) || pst->number_of_dependencies) |
bd5635a1 RP |
1268 | { |
1269 | /* Print the message now, before reading the string table, | |
1270 | to avoid disconcerting pauses. */ | |
1271 | if (info_verbose) | |
1272 | { | |
1273 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1274 | fflush (stdout); | |
1275 | } | |
1276 | ||
7d9884b9 | 1277 | sym_bfd = pst->objfile->obfd; |
bd5635a1 | 1278 | |
aab77d5f PB |
1279 | next_symbol_text_func = dbx_next_symbol_text; |
1280 | ||
4c07f28d | 1281 | dbx_psymtab_to_symtab_1 (pst); |
bd5635a1 RP |
1282 | |
1283 | /* Match with global symbols. This only needs to be done once, | |
1284 | after all of the symtabs and dependencies have been read in. */ | |
021959e2 | 1285 | scan_file_globals (pst->objfile); |
bd5635a1 | 1286 | |
bd5635a1 RP |
1287 | /* Finish up the debug error message. */ |
1288 | if (info_verbose) | |
1289 | printf_filtered ("done.\n"); | |
1290 | } | |
1291 | } | |
1292 | ||
574dac8e | 1293 | /* Read in a defined section of a specific object file's symbols. */ |
9342ecb9 | 1294 | |
574dac8e JK |
1295 | static void |
1296 | read_ofile_symtab (pst) | |
1297 | struct partial_symtab *pst; | |
bd5635a1 RP |
1298 | { |
1299 | register char *namestring; | |
7d9884b9 | 1300 | register struct internal_nlist *bufp; |
bd5635a1 | 1301 | unsigned char type; |
afe4ca15 | 1302 | unsigned max_symnum; |
7d9884b9 | 1303 | register bfd *abfd; |
3416d90b | 1304 | struct symtab *rtn; |
574dac8e JK |
1305 | struct objfile *objfile; |
1306 | int sym_offset; /* Offset to start of symbols to read */ | |
1307 | int sym_size; /* Size of symbols to read */ | |
1308 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
1309 | int text_size; /* Size of text segment for symbols */ | |
1310 | struct section_offsets *section_offsets; | |
1311 | ||
1312 | objfile = pst->objfile; | |
1313 | sym_offset = LDSYMOFF(pst); | |
1314 | sym_size = LDSYMLEN(pst); | |
1315 | text_offset = pst->textlow; | |
1316 | text_size = pst->texthigh - pst->textlow; | |
1317 | section_offsets = pst->section_offsets; | |
7d9884b9 | 1318 | |
021959e2 | 1319 | current_objfile = objfile; |
3416d90b | 1320 | subfile_stack = NULL; |
bd5635a1 | 1321 | |
3624c875 | 1322 | stringtab_global = DBX_STRINGTAB (objfile); |
3416d90b | 1323 | last_source_file = NULL; |
bd5635a1 | 1324 | |
7d9884b9 JG |
1325 | abfd = objfile->obfd; |
1326 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ | |
bd5635a1 RP |
1327 | symbuf_end = symbuf_idx = 0; |
1328 | ||
1329 | /* It is necessary to actually read one symbol *before* the start | |
1330 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
1331 | occurs before the N_SO symbol. | |
1332 | ||
1333 | Detecting this in read_dbx_symtab | |
1334 | would slow down initial readin, so we look for it here instead. */ | |
9342ecb9 | 1335 | if (!processing_acc_compilation && sym_offset >= (int)symbol_size) |
bd5635a1 | 1336 | { |
2c7ab4ca | 1337 | bfd_seek (symfile_bfd, sym_offset - symbol_size, SEEK_CUR); |
7d9884b9 | 1338 | fill_symbuf (abfd); |
bd5635a1 | 1339 | bufp = &symbuf[symbuf_idx++]; |
7d9884b9 | 1340 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 | 1341 | |
afe4ca15 | 1342 | SET_NAMESTRING (); |
bd5635a1 | 1343 | |
1aed6766 SG |
1344 | processing_gcc_compilation = 0; |
1345 | if (bufp->n_type == N_TEXT) | |
1346 | { | |
2e4964ad | 1347 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1348 | processing_gcc_compilation = 1; |
2e4964ad | 1349 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 SG |
1350 | processing_gcc_compilation = 2; |
1351 | } | |
3416d90b FF |
1352 | |
1353 | /* Try to select a C++ demangling based on the compilation unit | |
1354 | producer. */ | |
1355 | ||
1356 | if (processing_gcc_compilation) | |
1357 | { | |
1aed6766 | 1358 | if (AUTO_DEMANGLING) |
3416d90b FF |
1359 | { |
1360 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1361 | } | |
3416d90b | 1362 | } |
bd5635a1 RP |
1363 | } |
1364 | else | |
1365 | { | |
1366 | /* The N_SO starting this symtab is the first symbol, so we | |
1367 | better not check the symbol before it. I'm not this can | |
1368 | happen, but it doesn't hurt to check for it. */ | |
2c7ab4ca | 1369 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); |
bd5635a1 RP |
1370 | processing_gcc_compilation = 0; |
1371 | } | |
1372 | ||
1373 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1374 | fill_symbuf (abfd); |
bd5635a1 RP |
1375 | bufp = &symbuf[symbuf_idx]; |
1376 | if (bufp->n_type != (unsigned char)N_SO) | |
1377 | error("First symbol in segment of executable not a source symbol"); | |
1378 | ||
afe4ca15 JG |
1379 | max_symnum = sym_size / symbol_size; |
1380 | ||
bd5635a1 | 1381 | for (symnum = 0; |
afe4ca15 | 1382 | symnum < max_symnum; |
bd5635a1 RP |
1383 | symnum++) |
1384 | { | |
1385 | QUIT; /* Allow this to be interruptable */ | |
1386 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1387 | fill_symbuf(abfd); |
bd5635a1 | 1388 | bufp = &symbuf[symbuf_idx++]; |
7d9884b9 | 1389 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 | 1390 | |
c0302457 | 1391 | type = bufp->n_type; |
bd5635a1 | 1392 | |
afe4ca15 | 1393 | SET_NAMESTRING (); |
bd5635a1 | 1394 | |
7d9884b9 | 1395 | if (type & N_STAB) { |
c55e6167 | 1396 | process_one_symbol (type, bufp->n_desc, bufp->n_value, |
2af231b8 | 1397 | namestring, section_offsets, objfile); |
7d9884b9 | 1398 | } |
bd5635a1 RP |
1399 | /* We skip checking for a new .o or -l file; that should never |
1400 | happen in this routine. */ | |
1aed6766 | 1401 | else if (type == N_TEXT) |
3416d90b FF |
1402 | { |
1403 | /* I don't think this code will ever be executed, because | |
1404 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
1405 | the N_SO symbol which starts this source file. | |
1406 | However, there is no reason not to accept | |
1407 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
1aed6766 | 1408 | |
2e4964ad | 1409 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
1aed6766 | 1410 | processing_gcc_compilation = 1; |
2e4964ad | 1411 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
1aed6766 SG |
1412 | processing_gcc_compilation = 2; |
1413 | ||
1aed6766 | 1414 | if (AUTO_DEMANGLING) |
3416d90b FF |
1415 | { |
1416 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1417 | } | |
3416d90b | 1418 | } |
bd5635a1 RP |
1419 | else if (type & N_EXT || type == (unsigned char)N_TEXT |
1420 | || type == (unsigned char)N_NBTEXT | |
0c4d2cc2 | 1421 | ) { |
bd5635a1 RP |
1422 | /* Global symbol: see if we came across a dbx defintion for |
1423 | a corresponding symbol. If so, store the value. Remove | |
1424 | syms from the chain when their values are stored, but | |
1425 | search the whole chain, as there may be several syms from | |
1426 | different files with the same name. */ | |
1427 | /* This is probably not true. Since the files will be read | |
1428 | in one at a time, each reference to a global symbol will | |
1429 | be satisfied in each file as it appears. So we skip this | |
1430 | section. */ | |
1431 | ; | |
0c4d2cc2 | 1432 | } |
bd5635a1 | 1433 | } |
9404978d | 1434 | |
021959e2 | 1435 | current_objfile = NULL; |
9342ecb9 JG |
1436 | |
1437 | /* In a Solaris elf file, this variable, which comes from the | |
1438 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
1439 | which comes from pst->textlow is correct. */ | |
1440 | if (last_source_start_addr == 0) | |
1441 | last_source_start_addr = text_offset; | |
1442 | ||
574dac8e JK |
1443 | pst->symtab = end_symtab (text_offset + text_size, 0, 0, objfile, |
1444 | SECT_OFF_TEXT); | |
3416d90b | 1445 | end_stabs (); |
bd5635a1 | 1446 | } |
574dac8e | 1447 | |
bd5635a1 | 1448 | \f |
c55e6167 JG |
1449 | /* This handles a single symbol from the symbol-file, building symbols |
1450 | into a GDB symtab. It takes these arguments and an implicit argument. | |
1451 | ||
1452 | TYPE is the type field of the ".stab" symbol entry. | |
1453 | DESC is the desc field of the ".stab" entry. | |
1454 | VALU is the value field of the ".stab" entry. | |
1455 | NAME is the symbol name, in our address space. | |
2af231b8 JG |
1456 | SECTION_OFFSETS is a set of amounts by which the sections of this object |
1457 | file were relocated when it was loaded into memory. | |
1458 | All symbols that refer | |
1459 | to memory locations need to be offset by these amounts. | |
9342ecb9 | 1460 | OBJFILE is the object file from which we are reading symbols. |
c55e6167 JG |
1461 | It is used in end_symtab. */ |
1462 | ||
7e258d18 | 1463 | void |
2af231b8 | 1464 | process_one_symbol (type, desc, valu, name, section_offsets, objfile) |
bd5635a1 RP |
1465 | int type, desc; |
1466 | CORE_ADDR valu; | |
1467 | char *name; | |
2af231b8 | 1468 | struct section_offsets *section_offsets; |
9342ecb9 | 1469 | struct objfile *objfile; |
bd5635a1 | 1470 | { |
a5e6391b JK |
1471 | #ifdef SUN_FIXED_LBRAC_BUG |
1472 | /* If SUN_FIXED_LBRAC_BUG is defined, then it tells us whether we need | |
1473 | to correct the address of N_LBRAC's. If it is not defined, then | |
1474 | we never need to correct the addresses. */ | |
1475 | ||
0cf9329b | 1476 | /* This records the last pc address we've seen. We depend on there being |
bd5635a1 RP |
1477 | an SLINE or FUN or SO before the first LBRAC, since the variable does |
1478 | not get reset in between reads of different symbol files. */ | |
1479 | static CORE_ADDR last_pc_address; | |
a5e6391b | 1480 | #endif |
8357834f | 1481 | |
bd5635a1 | 1482 | register struct context_stack *new; |
9342ecb9 JG |
1483 | /* This remembers the address of the start of a function. It is used |
1484 | because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries are | |
1485 | relative to the current function's start address. On systems | |
2af231b8 JG |
1486 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, and is |
1487 | used to relocate these symbol types rather than SECTION_OFFSETS. */ | |
9342ecb9 | 1488 | static CORE_ADDR function_start_offset; |
bd5635a1 RP |
1489 | char *colon_pos; |
1490 | ||
574dac8e JK |
1491 | /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are relative |
1492 | to the function start address. */ | |
1493 | int block_address_function_relative; | |
1494 | ||
8357834f JK |
1495 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this source |
1496 | file. */ | |
1497 | int n_opt_found; | |
1498 | ||
574dac8e JK |
1499 | /* This is true for Solaris (and all other stabs-in-elf systems, hopefully, |
1500 | since it would be silly to do things differently from Solaris), and | |
1501 | false for SunOS4 and other a.out file formats. */ | |
1502 | block_address_function_relative = | |
1503 | 0 == strncmp (bfd_get_target (objfile->obfd), "elf", 3); | |
1504 | ||
1505 | if (!block_address_function_relative) | |
1506 | /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the | |
1507 | function start address, so just use the text offset. */ | |
1508 | function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
51b80b00 | 1509 | |
bd5635a1 RP |
1510 | /* Something is wrong if we see real data before |
1511 | seeing a source file name. */ | |
1512 | ||
3416d90b | 1513 | if (last_source_file == NULL && type != (unsigned char)N_SO) |
bd5635a1 | 1514 | { |
a5e6391b JK |
1515 | /* Ignore any symbols which appear before an N_SO symbol. Currently |
1516 | no one puts symbols there, but we should deal gracefully with the | |
1517 | case. A complain()t might be in order (if !IGNORE_SYMBOL (type)), | |
1518 | but this should not be an error (). */ | |
1519 | return; | |
bd5635a1 RP |
1520 | } |
1521 | ||
1522 | switch (type) | |
1523 | { | |
1524 | case N_FUN: | |
1525 | case N_FNAME: | |
0bd83fd7 | 1526 | #if 0 |
3c03b5de SG |
1527 | /* It seems that the Sun ANSI C compiler (acc) replaces N_FUN with N_GSYM and |
1528 | N_STSYM with a type code of f or F. Can't enable this until we get some | |
4c7c6bab | 1529 | stuff straightened out with psymtabs. FIXME. */ |
0bd83fd7 | 1530 | |
3c03b5de SG |
1531 | case N_GSYM: |
1532 | case N_STSYM: | |
0bd83fd7 | 1533 | #endif /* 0 */ |
3c03b5de | 1534 | |
2af231b8 JG |
1535 | /* Relocate for dynamic loading */ |
1536 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c55e6167 | 1537 | |
bd5635a1 RP |
1538 | /* Either of these types of symbols indicates the start of |
1539 | a new function. We must process its "name" normally for dbx, | |
1540 | but also record the start of a new lexical context, and possibly | |
1541 | also the end of the lexical context for the previous function. */ | |
1542 | /* This is not always true. This type of symbol may indicate a | |
1543 | text segment variable. */ | |
1544 | ||
bd5635a1 RP |
1545 | colon_pos = strchr (name, ':'); |
1546 | if (!colon_pos++ | |
1547 | || (*colon_pos != 'f' && *colon_pos != 'F')) | |
1548 | { | |
9342ecb9 | 1549 | define_symbol (valu, name, desc, type, objfile); |
bd5635a1 RP |
1550 | break; |
1551 | } | |
1552 | ||
a5e6391b | 1553 | #ifdef SUN_FIXED_LBRAC_BUG |
3c03b5de | 1554 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 1555 | #endif |
3c03b5de | 1556 | |
574dac8e JK |
1557 | if (block_address_function_relative) |
1558 | /* On Solaris 2.0 compilers, the block addresses and N_SLINE's | |
1559 | are relative to the start of the function. On normal systems, | |
1560 | and when using gcc on Solaris 2.0, these addresses are just | |
1561 | absolute, or relative to the N_SO, depending on | |
1562 | BLOCK_ADDRESS_ABSOLUTE. */ | |
1563 | function_start_offset = valu; | |
9342ecb9 | 1564 | |
bd5635a1 RP |
1565 | within_function = 1; |
1566 | if (context_stack_depth > 0) | |
1567 | { | |
7d9884b9 | 1568 | new = pop_context (); |
bd5635a1 RP |
1569 | /* Make a block for the local symbols within. */ |
1570 | finish_block (new->name, &local_symbols, new->old_blocks, | |
9342ecb9 | 1571 | new->start_addr, valu, objfile); |
bd5635a1 RP |
1572 | } |
1573 | /* Stack must be empty now. */ | |
1574 | if (context_stack_depth != 0) | |
51b80b00 | 1575 | complain (&lbrac_unmatched_complaint, symnum); |
bd5635a1 | 1576 | |
7d9884b9 | 1577 | new = push_context (0, valu); |
9342ecb9 | 1578 | new->name = define_symbol (valu, name, desc, type, objfile); |
bd5635a1 RP |
1579 | break; |
1580 | ||
bd5635a1 RP |
1581 | case N_LBRAC: |
1582 | /* This "symbol" just indicates the start of an inner lexical | |
1583 | context within a function. */ | |
1584 | ||
574dac8e JK |
1585 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1586 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1587 | valu += function_start_offset; |
c55e6167 | 1588 | #else |
574dac8e JK |
1589 | if (block_address_function_relative) |
1590 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1591 | valu += function_start_offset; | |
1592 | else | |
1593 | /* On most machines, the block addresses are relative to the | |
1594 | N_SO, the linker did not relocate them (sigh). */ | |
1595 | valu += last_source_start_addr; | |
bd5635a1 RP |
1596 | #endif |
1597 | ||
a5e6391b | 1598 | #ifdef SUN_FIXED_LBRAC_BUG |
8357834f | 1599 | if (!SUN_FIXED_LBRAC_BUG && valu < last_pc_address) { |
bd5635a1 | 1600 | /* Patch current LBRAC pc value to match last handy pc value */ |
51b80b00 | 1601 | complain (&lbrac_complaint); |
bd5635a1 RP |
1602 | valu = last_pc_address; |
1603 | } | |
a5e6391b | 1604 | #endif |
7d9884b9 | 1605 | new = push_context (desc, valu); |
bd5635a1 RP |
1606 | break; |
1607 | ||
1608 | case N_RBRAC: | |
1609 | /* This "symbol" just indicates the end of an inner lexical | |
1610 | context that was started with N_LBRAC. */ | |
1611 | ||
574dac8e JK |
1612 | #if defined(BLOCK_ADDRESS_ABSOLUTE) |
1613 | /* Relocate for dynamic loading (?). */ | |
9342ecb9 | 1614 | valu += function_start_offset; |
c55e6167 | 1615 | #else |
574dac8e JK |
1616 | if (block_address_function_relative) |
1617 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
1618 | valu += function_start_offset; | |
1619 | else | |
1620 | /* On most machines, the block addresses are relative to the | |
1621 | N_SO, the linker did not relocate them (sigh). */ | |
1622 | valu += last_source_start_addr; | |
bd5635a1 RP |
1623 | #endif |
1624 | ||
7d9884b9 | 1625 | new = pop_context(); |
bd5635a1 | 1626 | if (desc != new->depth) |
51b80b00 | 1627 | complain (&lbrac_mismatch_complaint, symnum); |
bd5635a1 RP |
1628 | |
1629 | /* Some compilers put the variable decls inside of an | |
1630 | LBRAC/RBRAC block. This macro should be nonzero if this | |
1631 | is true. DESC is N_DESC from the N_RBRAC symbol. | |
0cf9329b PB |
1632 | GCC_P is true if we've detected the GCC_COMPILED_SYMBOL |
1633 | or the GCC2_COMPILED_SYMBOL. */ | |
bd5635a1 RP |
1634 | #if !defined (VARIABLES_INSIDE_BLOCK) |
1635 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 0 | |
1636 | #endif | |
1637 | ||
1638 | /* Can only use new->locals as local symbols here if we're in | |
1639 | gcc or on a machine that puts them before the lbrack. */ | |
1640 | if (!VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
1641 | local_symbols = new->locals; | |
1642 | ||
1643 | /* If this is not the outermost LBRAC...RBRAC pair in the | |
1644 | function, its local symbols preceded it, and are the ones | |
1645 | just recovered from the context stack. Defined the block for them. | |
1646 | ||
1647 | If this is the outermost LBRAC...RBRAC pair, there is no | |
1648 | need to do anything; leave the symbols that preceded it | |
1649 | to be attached to the function's own block. However, if | |
1650 | it is so, we need to indicate that we just moved outside | |
1651 | of the function. */ | |
1652 | if (local_symbols | |
1653 | && (context_stack_depth | |
1654 | > !VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation))) | |
1655 | { | |
1656 | /* FIXME Muzzle a compiler bug that makes end < start. */ | |
1657 | if (new->start_addr > valu) | |
1658 | { | |
51b80b00 | 1659 | complain (&lbrac_rbrac_complaint); |
bd5635a1 RP |
1660 | new->start_addr = valu; |
1661 | } | |
1662 | /* Make a block for the local symbols within. */ | |
1663 | finish_block (0, &local_symbols, new->old_blocks, | |
9342ecb9 | 1664 | new->start_addr, valu, objfile); |
bd5635a1 RP |
1665 | } |
1666 | else | |
1667 | { | |
1668 | within_function = 0; | |
1669 | } | |
1670 | if (VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
1671 | /* Now pop locals of block just finished. */ | |
1672 | local_symbols = new->locals; | |
1673 | break; | |
1674 | ||
9bb30452 | 1675 | case N_FN: |
6150cc73 | 1676 | case N_FN_SEQ: |
9bb30452 | 1677 | /* This kind of symbol indicates the start of an object file. */ |
2af231b8 JG |
1678 | /* Relocate for dynamic loading */ |
1679 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
bd5635a1 RP |
1680 | break; |
1681 | ||
1682 | case N_SO: | |
1683 | /* This type of symbol indicates the start of data | |
1684 | for one source file. | |
1685 | Finish the symbol table of the previous source file | |
1686 | (if any) and start accumulating a new symbol table. */ | |
2af231b8 JG |
1687 | /* Relocate for dynamic loading */ |
1688 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c55e6167 | 1689 | |
8357834f JK |
1690 | n_opt_found = 0; |
1691 | ||
a5e6391b | 1692 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 1693 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 1694 | #endif |
8357834f | 1695 | |
bd5635a1 RP |
1696 | #ifdef PCC_SOL_BROKEN |
1697 | /* pcc bug, occasionally puts out SO for SOL. */ | |
1698 | if (context_stack_depth > 0) | |
1699 | { | |
1700 | start_subfile (name, NULL); | |
1701 | break; | |
1702 | } | |
1703 | #endif | |
1704 | if (last_source_file) | |
7e258d18 PB |
1705 | { |
1706 | /* Check if previous symbol was also an N_SO (with some | |
1707 | sanity checks). If so, that one was actually the directory | |
1708 | name, and the current one is the real file name. | |
1709 | Patch things up. */ | |
6985bc54 | 1710 | if (previous_stab_code == (unsigned char) N_SO) |
7e258d18 | 1711 | { |
3416d90b | 1712 | patch_subfile_names (current_subfile, name); |
c72af089 | 1713 | break; /* Ignore repeated SOs */ |
7e258d18 | 1714 | } |
65ce5df4 | 1715 | end_symtab (valu, 0, 0, objfile, SECT_OFF_TEXT); |
3416d90b | 1716 | end_stabs (); |
7e258d18 | 1717 | } |
3416d90b | 1718 | start_stabs (); |
bd5635a1 RP |
1719 | start_symtab (name, NULL, valu); |
1720 | break; | |
1721 | ||
c55e6167 | 1722 | |
bd5635a1 RP |
1723 | case N_SOL: |
1724 | /* This type of symbol indicates the start of data for | |
1725 | a sub-source-file, one whose contents were copied or | |
1726 | included in the compilation of the main source file | |
1727 | (whose name was given in the N_SO symbol.) */ | |
2af231b8 JG |
1728 | /* Relocate for dynamic loading */ |
1729 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
784fd92b | 1730 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
1731 | break; |
1732 | ||
1733 | case N_BINCL: | |
1734 | push_subfile (); | |
1735 | add_new_header_file (name, valu); | |
784fd92b | 1736 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
1737 | break; |
1738 | ||
1739 | case N_EINCL: | |
784fd92b | 1740 | start_subfile (pop_subfile (), current_subfile->dirname); |
bd5635a1 RP |
1741 | break; |
1742 | ||
1743 | case N_EXCL: | |
1744 | add_old_header_file (name, valu); | |
1745 | break; | |
1746 | ||
1747 | case N_SLINE: | |
1748 | /* This type of "symbol" really just records | |
1749 | one line-number -- core-address correspondence. | |
1750 | Enter it in the line list for this symbol table. */ | |
9342ecb9 JG |
1751 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
1752 | valu += function_start_offset; | |
a5e6391b | 1753 | #ifdef SUN_FIXED_LBRAC_BUG |
bd5635a1 | 1754 | last_pc_address = valu; /* Save for SunOS bug circumcision */ |
a5e6391b | 1755 | #endif |
4137c5fc | 1756 | record_line (current_subfile, desc, valu); |
bd5635a1 RP |
1757 | break; |
1758 | ||
1759 | case N_BCOMM: | |
1760 | if (common_block) | |
a5e6391b JK |
1761 | { |
1762 | static struct complaint msg = { | |
1763 | "Invalid symbol data: common within common at symtab pos %d", | |
1764 | 0, 0}; | |
1765 | complain (&msg, symnum); | |
1766 | } | |
bd5635a1 RP |
1767 | common_block = local_symbols; |
1768 | common_block_i = local_symbols ? local_symbols->nsyms : 0; | |
1769 | break; | |
1770 | ||
1771 | case N_ECOMM: | |
1772 | /* Symbols declared since the BCOMM are to have the common block | |
1773 | start address added in when we know it. common_block points to | |
1774 | the first symbol after the BCOMM in the local_symbols list; | |
1775 | copy the list and hang it off the symbol for the common block name | |
1776 | for later fixup. */ | |
1777 | { | |
1778 | int i; | |
1779 | struct symbol *sym = | |
9342ecb9 | 1780 | (struct symbol *) xmmalloc (objfile -> md, sizeof (struct symbol)); |
4ed3a9ea | 1781 | memset (sym, 0, sizeof *sym); |
bd5635a1 RP |
1782 | SYMBOL_NAME (sym) = savestring (name, strlen (name)); |
1783 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1784 | SYMBOL_NAMESPACE (sym) = (enum namespace)((long) | |
1785 | copy_pending (local_symbols, common_block_i, common_block)); | |
1786 | i = hashname (SYMBOL_NAME (sym)); | |
1787 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; | |
1788 | global_sym_chain[i] = sym; | |
1789 | common_block = 0; | |
1790 | break; | |
1791 | } | |
1792 | ||
2af231b8 JG |
1793 | /* The following symbol types need to have the appropriate offset added |
1794 | to their value; then we process symbol definitions in the name. */ | |
1795 | ||
1796 | case N_STSYM: /* Static symbol in data seg */ | |
1797 | case N_LCSYM: /* Static symbol in BSS seg */ | |
1798 | case N_ROSYM: /* Static symbol in Read-only data seg */ | |
1799 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. FIXME. | |
1800 | Solaris2's stabs-in-coff makes *most* symbols relative | |
1801 | but leaves a few absolute. N_STSYM and friends sit on the fence. | |
1802 | .stab "foo:S...",N_STSYM is absolute (ld relocates it) | |
1803 | .stab "foo:V...",N_STSYM is relative (section base subtracted). | |
1804 | This leaves us no choice but to search for the 'S' or 'V'... | |
1805 | (or pass the whole section_offsets stuff down ONE MORE function | |
1806 | call level, which we really don't want to do). */ | |
1807 | { | |
1808 | char *p; | |
1809 | p = strchr (name, ':'); | |
1810 | if (p != 0 && p[1] == 'S') | |
1811 | { | |
1812 | /* FIXME! We relocate it by the TEXT offset, in case the | |
1813 | whole module moved in memory. But this is wrong, since | |
1814 | the sections can side around independently. */ | |
1815 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1816 | goto define_a_symbol; | |
1817 | } | |
1818 | /* Since it's not the kludge case, re-dispatch to the right handler. */ | |
1819 | switch (type) { | |
1820 | case N_STSYM: goto case_N_STSYM; | |
1821 | case N_LCSYM: goto case_N_LCSYM; | |
1822 | case N_ROSYM: goto case_N_ROSYM; | |
1823 | default: abort(); | |
1824 | } | |
1825 | } | |
1826 | ||
1827 | case_N_STSYM: /* Static symbol in data seg */ | |
c55e6167 | 1828 | case N_DSLINE: /* Source line number, data seg */ |
2af231b8 JG |
1829 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA); |
1830 | goto define_a_symbol; | |
1831 | ||
1832 | case_N_LCSYM: /* Static symbol in BSS seg */ | |
c55e6167 JG |
1833 | case N_BSLINE: /* Source line number, bss seg */ |
1834 | /* N_BROWS: overlaps with N_BSLINE */ | |
2af231b8 JG |
1835 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS); |
1836 | goto define_a_symbol; | |
1837 | ||
1838 | case_N_ROSYM: /* Static symbol in Read-only data seg */ | |
1839 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA); | |
1840 | goto define_a_symbol; | |
1841 | ||
c55e6167 | 1842 | case N_ENTRY: /* Alternate entry point */ |
2af231b8 JG |
1843 | /* Relocate for dynamic loading */ |
1844 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1845 | goto define_a_symbol; | |
c55e6167 JG |
1846 | |
1847 | /* The following symbol types don't need the address field relocated, | |
1848 | since it is either unused, or is absolute. */ | |
2af231b8 | 1849 | define_a_symbol: |
c55e6167 JG |
1850 | case N_GSYM: /* Global variable */ |
1851 | case N_NSYMS: /* Number of symbols (ultrix) */ | |
1852 | case N_NOMAP: /* No map? (ultrix) */ | |
1853 | case N_RSYM: /* Register variable */ | |
1854 | case N_DEFD: /* Modula-2 GNU module dependency */ | |
1855 | case N_SSYM: /* Struct or union element */ | |
1856 | case N_LSYM: /* Local symbol in stack */ | |
1857 | case N_PSYM: /* Parameter variable */ | |
1858 | case N_LENG: /* Length of preceding symbol type */ | |
1859 | if (name) | |
9342ecb9 | 1860 | define_symbol (valu, name, desc, type, objfile); |
bd5635a1 RP |
1861 | break; |
1862 | ||
ec8ceca3 JG |
1863 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
1864 | for a bunch of other flags, too. Someday we may parse their | |
1865 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
1866 | case N_OPT: /* Solaris 2: Compiler options */ | |
1867 | if (name) | |
1868 | { | |
2e4964ad | 1869 | if (STREQ (name, GCC2_COMPILED_FLAG_SYMBOL)) |
3416d90b | 1870 | { |
1aed6766 | 1871 | processing_gcc_compilation = 2; |
3416d90b | 1872 | #if 1 /* Works, but is experimental. -fnf */ |
1aed6766 | 1873 | if (AUTO_DEMANGLING) |
3416d90b FF |
1874 | { |
1875 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
1876 | } | |
1877 | #endif | |
1878 | } | |
8357834f JK |
1879 | else |
1880 | n_opt_found = 1; | |
ec8ceca3 JG |
1881 | } |
1882 | break; | |
1883 | ||
bcbf9559 JG |
1884 | /* The following symbol types can be ignored. */ |
1885 | case N_OBJ: /* Solaris 2: Object file dir and name */ | |
bcbf9559 JG |
1886 | /* N_UNDF: Solaris 2: file separator mark */ |
1887 | /* N_UNDF: -- we will never encounter it, since we only process one | |
1888 | file's symbols at once. */ | |
4c7c6bab JG |
1889 | case N_ENDM: /* Solaris 2: End of module */ |
1890 | case N_MAIN: /* Name of main routine. */ | |
9342ecb9 JG |
1891 | break; |
1892 | ||
c55e6167 JG |
1893 | /* The following symbol types we don't know how to process. Handle |
1894 | them in a "default" way, but complain to people who care. */ | |
bd5635a1 | 1895 | default: |
2af231b8 | 1896 | case N_CATCH: /* Exception handler catcher */ |
c55e6167 | 1897 | case N_EHDECL: /* Exception handler name */ |
c55e6167 JG |
1898 | case N_PC: /* Global symbol in Pascal */ |
1899 | case N_M2C: /* Modula-2 compilation unit */ | |
1900 | /* N_MOD2: overlaps with N_EHDECL */ | |
1901 | case N_SCOPE: /* Modula-2 scope information */ | |
1902 | case N_ECOML: /* End common (local name) */ | |
1903 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
1904 | case N_NBDATA: | |
1905 | case N_NBBSS: | |
1906 | case N_NBSTS: | |
1907 | case N_NBLCS: | |
1908 | complain (&unknown_symtype_complaint, local_hex_string(type)); | |
bd5635a1 | 1909 | if (name) |
9342ecb9 | 1910 | define_symbol (valu, name, desc, type, objfile); |
bd5635a1 | 1911 | } |
7e258d18 PB |
1912 | |
1913 | previous_stab_code = type; | |
bd5635a1 RP |
1914 | } |
1915 | \f | |
bd5635a1 | 1916 | /* Copy a pending list, used to record the contents of a common |
ec06a3cb JK |
1917 | block for later fixup. We copy the symbols starting with all |
1918 | symbols in BEG, and ending with the symbols which are in | |
1919 | END at index ENDI. */ | |
bd5635a1 | 1920 | static struct pending * |
ec06a3cb | 1921 | copy_pending (beg, endi, end) |
021959e2 | 1922 | struct pending *beg; |
ec06a3cb | 1923 | int endi; |
021959e2 | 1924 | struct pending *end; |
bd5635a1 RP |
1925 | { |
1926 | struct pending *new = 0; | |
1927 | struct pending *next; | |
ec06a3cb | 1928 | int j; |
bd5635a1 | 1929 | |
ec06a3cb JK |
1930 | /* Copy all the struct pendings before end. */ |
1931 | for (next = beg; next != NULL && next != end; next = next->next) | |
bd5635a1 | 1932 | { |
ec06a3cb | 1933 | for (j = 0; j < next->nsyms; j++) |
bd5635a1 RP |
1934 | add_symbol_to_list (next->symbol[j], &new); |
1935 | } | |
ec06a3cb JK |
1936 | |
1937 | /* Copy however much of END we need. */ | |
1938 | for (j = endi; j < end->nsyms; j++) | |
1939 | add_symbol_to_list (end->symbol[j], &new); | |
1940 | ||
bd5635a1 RP |
1941 | return new; |
1942 | } | |
bd5635a1 | 1943 | \f |
9342ecb9 JG |
1944 | /* Scan and build partial symbols for an ELF symbol file. |
1945 | This ELF file has already been processed to get its minimal symbols, | |
1946 | and any DWARF symbols that were in it. | |
1947 | ||
1948 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
1949 | rolled into one. | |
1950 | ||
1951 | OBJFILE is the object file we are reading symbols from. | |
1952 | ADDR is the address relative to which the symbols are (e.g. | |
1953 | the base address of the text segment). | |
1954 | MAINLINE is true if we are reading the main symbol | |
1955 | table (as opposed to a shared lib or dynamically loaded file). | |
1956 | STABOFFSET and STABSIZE define the location in OBJFILE where the .stab | |
1957 | section exists. | |
1958 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
1959 | .stabstr section exists. | |
1960 | ||
1961 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
1962 | adjusted for elf details. */ | |
1963 | ||
1964 | void | |
1aed6766 | 1965 | elfstab_build_psymtabs (objfile, section_offsets, mainline, |
9342ecb9 | 1966 | staboffset, stabsize, |
1aed6766 SG |
1967 | stabstroffset, stabstrsize) |
1968 | struct objfile *objfile; | |
1969 | struct section_offsets *section_offsets; | |
1970 | int mainline; | |
51b80b00 | 1971 | file_ptr staboffset; |
1aed6766 | 1972 | unsigned int stabsize; |
51b80b00 | 1973 | file_ptr stabstroffset; |
1aed6766 | 1974 | unsigned int stabstrsize; |
9342ecb9 JG |
1975 | { |
1976 | int val; | |
1977 | bfd *sym_bfd = objfile->obfd; | |
1978 | char *name = bfd_get_filename (sym_bfd); | |
1979 | struct dbx_symfile_info *info; | |
1980 | ||
2af231b8 JG |
1981 | /* There is already a dbx_symfile_info allocated by our caller. |
1982 | It might even contain some info from the ELF symtab to help us. */ | |
1983 | info = (struct dbx_symfile_info *) objfile->sym_private; | |
9342ecb9 JG |
1984 | |
1985 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
1986 | if (!DBX_TEXT_SECT (objfile)) | |
1987 | error ("Can't find .text section in symbol file"); | |
1988 | ||
1989 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
1990 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; | |
1991 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
1992 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; | |
1993 | DBX_SYMTAB_OFFSET (objfile) = staboffset; | |
1994 | ||
51db2323 FF |
1995 | if (stabstrsize < 0 /* FIXME: stabstrsize is unsigned; never true! */ |
1996 | || stabstrsize > bfd_get_size (sym_bfd)) | |
9342ecb9 JG |
1997 | error ("ridiculous string table size: %d bytes", stabstrsize); |
1998 | DBX_STRINGTAB (objfile) = (char *) | |
1999 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
2000 | ||
2001 | /* Now read in the string table in one big gulp. */ | |
2002 | ||
2c7ab4ca | 2003 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); |
9342ecb9 JG |
2004 | if (val < 0) |
2005 | perror_with_name (name); | |
2006 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
2007 | if (val != stabstrsize) | |
2008 | perror_with_name (name); | |
2009 | ||
3416d90b | 2010 | stabsread_new_init (); |
9342ecb9 JG |
2011 | buildsym_new_init (); |
2012 | free_header_files (); | |
2013 | init_header_files (); | |
2014 | install_minimal_symbols (objfile); | |
2015 | ||
2016 | processing_acc_compilation = 1; | |
2017 | ||
2018 | /* In an elf file, we've already installed the minimal symbols that came | |
2019 | from the elf (non-stab) symbol table, so always act like an | |
2020 | incremental load here. */ | |
2af231b8 JG |
2021 | dbx_symfile_read (objfile, section_offsets, 0); |
2022 | } | |
2023 | \f | |
040b9597 RP |
2024 | /* Scan and build partial symbols for a PA symbol file. |
2025 | This PA file has already been processed to get its minimal symbols. | |
2026 | ||
2027 | OBJFILE is the object file we are reading symbols from. | |
2028 | ADDR is the address relative to which the symbols are (e.g. | |
2029 | the base address of the text segment). | |
2030 | MAINLINE is true if we are reading the main symbol | |
2031 | table (as opposed to a shared lib or dynamically loaded file). | |
2032 | ||
2033 | */ | |
2034 | ||
2035 | void | |
2036 | pastab_build_psymtabs (objfile, section_offsets, mainline) | |
2037 | struct objfile *objfile; | |
2038 | struct section_offsets *section_offsets; | |
2039 | int mainline; | |
2040 | { | |
2041 | free_header_files (); | |
2042 | init_header_files (); | |
2043 | ||
2044 | /* In a PA file, we've already installed the minimal symbols that came | |
2045 | from the PA (non-stab) symbol table, so always act like an | |
2046 | incremental load here. */ | |
2047 | ||
2048 | dbx_symfile_read (objfile, section_offsets, mainline); | |
2049 | } | |
2050 | \f | |
2af231b8 JG |
2051 | /* Parse the user's idea of an offset for dynamic linking, into our idea |
2052 | of how to represent it for fast symbol reading. */ | |
2053 | ||
040b9597 | 2054 | static struct section_offsets * |
2af231b8 JG |
2055 | dbx_symfile_offsets (objfile, addr) |
2056 | struct objfile *objfile; | |
2057 | CORE_ADDR addr; | |
2058 | { | |
2059 | struct section_offsets *section_offsets; | |
2060 | int i; | |
2061 | ||
2062 | section_offsets = (struct section_offsets *) | |
2063 | obstack_alloc (&objfile -> psymbol_obstack, | |
2064 | sizeof (struct section_offsets) + | |
2065 | sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1)); | |
2066 | ||
2067 | for (i = 0; i < SECT_OFF_MAX; i++) | |
2068 | ANOFFSET (section_offsets, i) = addr; | |
2069 | ||
2070 | return section_offsets; | |
9342ecb9 JG |
2071 | } |
2072 | \f | |
bd5635a1 RP |
2073 | /* Register our willingness to decode symbols for SunOS and a.out and |
2074 | b.out files handled by BFD... */ | |
80d68b1d FF |
2075 | static struct sym_fns sunos_sym_fns = |
2076 | { | |
2077 | "sunOs", /* sym_name: name or name prefix of BFD target type */ | |
2078 | 6, /* sym_namelen: number of significant sym_name chars */ | |
2079 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ | |
2080 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2081 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2082 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2af231b8 | 2083 | dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
80d68b1d FF |
2084 | NULL /* next: pointer to next struct sym_fns */ |
2085 | }; | |
bd5635a1 | 2086 | |
80d68b1d FF |
2087 | static struct sym_fns aout_sym_fns = |
2088 | { | |
2089 | "a.out", /* sym_name: name or name prefix of BFD target type */ | |
2090 | 5, /* sym_namelen: number of significant sym_name chars */ | |
2091 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ | |
2092 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2093 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2094 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2af231b8 | 2095 | dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
80d68b1d FF |
2096 | NULL /* next: pointer to next struct sym_fns */ |
2097 | }; | |
bd5635a1 | 2098 | |
80d68b1d FF |
2099 | static struct sym_fns bout_sym_fns = |
2100 | { | |
2101 | "b.out", /* sym_name: name or name prefix of BFD target type */ | |
2102 | 5, /* sym_namelen: number of significant sym_name chars */ | |
2103 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ | |
2104 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2105 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2106 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2af231b8 | 2107 | dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
80d68b1d FF |
2108 | NULL /* next: pointer to next struct sym_fns */ |
2109 | }; | |
bd5635a1 RP |
2110 | |
2111 | void | |
2112 | _initialize_dbxread () | |
2113 | { | |
2114 | add_symtab_fns(&sunos_sym_fns); | |
2115 | add_symtab_fns(&aout_sym_fns); | |
2116 | add_symtab_fns(&bout_sym_fns); | |
bd5635a1 | 2117 | } |