Commit | Line | Data |
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bd5635a1 | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
c55e6167 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991 Free Software Foundation, Inc. |
bd5635a1 RP |
3 | |
4 | This file is part of GDB. | |
5 | ||
c3a21801 | 6 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 7 | it under the terms of the GNU General Public License as published by |
c3a21801 JG |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | (at your option) any later version. | |
bd5635a1 | 10 | |
c3a21801 | 11 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
c3a21801 JG |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
9404978d MT |
19 | |
20 | /* This module provides three functions: dbx_symfile_init, | |
21 | which initializes to read a symbol file; dbx_new_init, which | |
22 | discards existing cached information when all symbols are being | |
23 | discarded; and dbx_symfile_read, which reads a symbol table | |
24 | from a file. | |
25 | ||
26 | dbx_symfile_read only does the minimum work necessary for letting the | |
27 | user "name" things symbolically; it does not read the entire symtab. | |
28 | Instead, it reads the external and static symbols and puts them in partial | |
29 | symbol tables. When more extensive information is requested of a | |
30 | file, the corresponding partial symbol table is mutated into a full | |
31 | fledged symbol table by going back and reading the symbols | |
32 | for real. dbx_psymtab_to_symtab() is the function that does this */ | |
bd5635a1 | 33 | |
bd5635a1 | 34 | #include "defs.h" |
318bf84f | 35 | #include <string.h> |
bd5635a1 | 36 | |
9342ecb9 | 37 | #if defined(USG) || defined(__CYGNUSCLIB__) |
bd5635a1 RP |
38 | #include <sys/types.h> |
39 | #include <fcntl.h> | |
40 | #define L_SET 0 | |
41 | #define L_INCR 1 | |
42 | #endif | |
43 | ||
7da1e27d SG |
44 | #ifdef hp9000s800 |
45 | /* We don't want to use HP-UX's nlists. */ | |
46 | #define _NLIST_INCLUDED | |
47 | #endif | |
48 | ||
afe4ca15 JG |
49 | #include <obstack.h> |
50 | #include <sys/param.h> | |
021959e2 | 51 | #ifndef NO_SYS_FILE |
afe4ca15 | 52 | #include <sys/file.h> |
021959e2 | 53 | #endif |
afe4ca15 | 54 | #include <sys/stat.h> |
bd5635a1 | 55 | #include <ctype.h> |
afe4ca15 JG |
56 | #include "symtab.h" |
57 | #include "breakpoint.h" | |
58 | #include "command.h" | |
59 | #include "target.h" | |
60 | #include "gdbcore.h" /* for bfd stuff */ | |
ac88ca20 | 61 | #include "libbfd.h" /* FIXME Secret internal BFD stuff (bfd_read) */ |
7da1e27d SG |
62 | #ifdef hp9000s800 |
63 | #include "libhppa.h" | |
64 | #include "syms.h" | |
65 | #else | |
afe4ca15 | 66 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
7da1e27d | 67 | #endif |
afe4ca15 | 68 | #include "symfile.h" |
3624c875 | 69 | #include "objfiles.h" |
c0302457 | 70 | #include "buildsym.h" |
2af231b8 | 71 | #include "gdb-stabs.h" |
afe4ca15 | 72 | |
7e258d18 PB |
73 | #include "aout/aout64.h" |
74 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */ | |
bd5635a1 | 75 | |
4a35d6e9 FF |
76 | /* Each partial symbol table entry contains a pointer to private data for the |
77 | read_symtab() function to use when expanding a partial symbol table entry | |
78 | to a full symbol table entry. | |
79 | ||
80 | For dbxread this structure contains the offset within the file symbol table | |
81 | of first local symbol for this file, and length (in bytes) of the section | |
82 | of the symbol table devoted to this file's symbols (actually, the section | |
9342ecb9 JG |
83 | bracketed may contain more than just this file's symbols). It also contains |
84 | further information needed to locate the symbols if they are in an ELF file. | |
85 | ||
86 | If ldsymlen is 0, the only reason for this thing's existence is the | |
87 | dependency list. Nothing else will happen when it is read in. */ | |
4a35d6e9 FF |
88 | |
89 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) | |
90 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
9342ecb9 JG |
91 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) |
92 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
93 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
94 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
95 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
4a35d6e9 FF |
96 | |
97 | struct symloc { | |
98 | int ldsymoff; | |
99 | int ldsymlen; | |
9342ecb9 JG |
100 | int symbol_size; |
101 | int symbol_offset; | |
102 | int string_offset; | |
103 | int file_string_offset; | |
4a35d6e9 FF |
104 | }; |
105 | ||
bd5635a1 RP |
106 | /* Macro to determine which symbols to ignore when reading the first symbol |
107 | of a file. Some machines override this definition. */ | |
108 | #ifndef IGNORE_SYMBOL | |
109 | /* This code is used on Ultrix systems. Ignore it */ | |
110 | #define IGNORE_SYMBOL(type) (type == (int)N_NSYMS) | |
111 | #endif | |
112 | ||
113 | /* Macro for name of symbol to indicate a file compiled with gcc. */ | |
114 | #ifndef GCC_COMPILED_FLAG_SYMBOL | |
115 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." | |
116 | #endif | |
117 | ||
0cf9329b PB |
118 | /* Macro for name of symbol to indicate a file compiled with gcc2. */ |
119 | #ifndef GCC2_COMPILED_FLAG_SYMBOL | |
120 | #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled." | |
121 | #endif | |
122 | ||
bd5635a1 RP |
123 | /* Define this as 1 if a pcc declaration of a char or short argument |
124 | gives the correct address. Otherwise assume pcc gives the | |
125 | address of the corresponding int, which is not the same on a | |
126 | big-endian machine. */ | |
127 | ||
128 | #ifndef BELIEVE_PCC_PROMOTION | |
129 | #define BELIEVE_PCC_PROMOTION 0 | |
130 | #endif | |
c0302457 | 131 | |
bd5635a1 RP |
132 | /* Nonzero means give verbose info on gdb action. From main.c. */ |
133 | extern int info_verbose; | |
134 | ||
7d9884b9 | 135 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
bd5635a1 | 136 | |
c0302457 | 137 | static bfd *symfile_bfd; |
bd5635a1 | 138 | |
afe4ca15 JG |
139 | /* The size of each symbol in the symbol file (in external form). |
140 | This is set by dbx_symfile_read when building psymtabs, and by | |
141 | dbx_psymtab_to_symtab when building symtabs. */ | |
142 | ||
143 | static unsigned symbol_size; | |
144 | ||
9342ecb9 JG |
145 | /* This is the offset of the symbol table in the executable file */ |
146 | static unsigned symbol_table_offset; | |
147 | ||
148 | /* This is the offset of the string table in the executable file */ | |
149 | static unsigned string_table_offset; | |
150 | ||
151 | /* For elf+stab executables, the n_strx field is not a simple index | |
152 | into the string table. Instead, each .o file has a base offset | |
153 | in the string table, and the associated symbols contain offsets | |
154 | from this base. The following two variables contain the base | |
155 | offset for the current and next .o files. */ | |
156 | static unsigned int file_string_table_offset; | |
157 | static unsigned int next_file_string_table_offset; | |
158 | ||
bd5635a1 RP |
159 | /* Complaints about the symbols we have encountered. */ |
160 | ||
bd5635a1 RP |
161 | struct complaint lbrac_complaint = |
162 | {"bad block start address patched", 0, 0}; | |
163 | ||
bd5635a1 RP |
164 | struct complaint string_table_offset_complaint = |
165 | {"bad string table offset in symbol %d", 0, 0}; | |
166 | ||
167 | struct complaint unknown_symtype_complaint = | |
0c4d2cc2 | 168 | {"unknown symbol type %s", 0, 0}; |
bd5635a1 RP |
169 | |
170 | struct complaint lbrac_rbrac_complaint = | |
171 | {"block start larger than block end", 0, 0}; | |
7d9884b9 JG |
172 | |
173 | struct complaint lbrac_unmatched_complaint = | |
174 | {"unmatched N_LBRAC before symtab pos %d", 0, 0}; | |
175 | ||
176 | struct complaint lbrac_mismatch_complaint = | |
177 | {"N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", 0, 0}; | |
9342ecb9 JG |
178 | |
179 | struct complaint repeated_header_complaint = | |
180 | {"\"repeated\" header file not previously seen, at symtab pos %d", 0, 0}; | |
181 | ||
182 | struct complaint repeated_header_name_complaint = | |
183 | {"\"repeated\" header file not previously seen, named %s", 0, 0}; | |
bd5635a1 | 184 | \f |
bd5635a1 RP |
185 | /* During initial symbol readin, we need to have a structure to keep |
186 | track of which psymtabs have which bincls in them. This structure | |
187 | is used during readin to setup the list of dependencies within each | |
188 | partial symbol table. */ | |
189 | ||
190 | struct header_file_location | |
191 | { | |
192 | char *name; /* Name of header file */ | |
193 | int instance; /* See above */ | |
194 | struct partial_symtab *pst; /* Partial symtab that has the | |
195 | BINCL/EINCL defs for this file */ | |
196 | }; | |
197 | ||
198 | /* The actual list and controling variables */ | |
199 | static struct header_file_location *bincl_list, *next_bincl; | |
200 | static int bincls_allocated; | |
201 | ||
021959e2 JG |
202 | /* Local function prototypes */ |
203 | ||
204 | static void | |
80d68b1d FF |
205 | free_header_files PARAMS ((void)); |
206 | ||
207 | static void | |
208 | init_header_files PARAMS ((void)); | |
021959e2 JG |
209 | |
210 | static struct pending * | |
211 | copy_pending PARAMS ((struct pending *, int, struct pending *)); | |
212 | ||
213 | static struct symtab * | |
2af231b8 JG |
214 | read_ofile_symtab PARAMS ((struct objfile *, int, int, CORE_ADDR, int, |
215 | struct section_offsets *)); | |
021959e2 JG |
216 | |
217 | static void | |
218 | dbx_psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
219 | ||
220 | static void | |
4c07f28d | 221 | dbx_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *)); |
021959e2 JG |
222 | |
223 | static void | |
2af231b8 JG |
224 | read_dbx_symtab PARAMS ((struct section_offsets *, struct objfile *, |
225 | CORE_ADDR, int)); | |
021959e2 JG |
226 | |
227 | static void | |
228 | free_bincl_list PARAMS ((struct objfile *)); | |
229 | ||
230 | static struct partial_symtab * | |
231 | find_corresponding_bincl_psymtab PARAMS ((char *, int)); | |
232 | ||
233 | static void | |
234 | add_bincl_to_list PARAMS ((struct partial_symtab *, char *, int)); | |
235 | ||
236 | static void | |
237 | init_bincl_list PARAMS ((int, struct objfile *)); | |
238 | ||
239 | static void | |
3624c875 | 240 | init_psymbol_list PARAMS ((struct objfile *)); |
021959e2 JG |
241 | |
242 | static char * | |
243 | dbx_next_symbol_text PARAMS ((void)); | |
244 | ||
245 | static void | |
246 | fill_symbuf PARAMS ((bfd *)); | |
247 | ||
248 | static void | |
80d68b1d FF |
249 | dbx_symfile_init PARAMS ((struct objfile *)); |
250 | ||
251 | static void | |
252 | dbx_new_init PARAMS ((struct objfile *)); | |
021959e2 JG |
253 | |
254 | static void | |
2af231b8 | 255 | dbx_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); |
021959e2 JG |
256 | |
257 | static void | |
80d68b1d | 258 | dbx_symfile_finish PARAMS ((struct objfile *)); |
021959e2 JG |
259 | |
260 | static void | |
261 | record_minimal_symbol PARAMS ((char *, CORE_ADDR, int, struct objfile *)); | |
262 | ||
263 | static void | |
264 | add_new_header_file PARAMS ((char *, int)); | |
265 | ||
266 | static void | |
267 | add_old_header_file PARAMS ((char *, int)); | |
268 | ||
269 | static void | |
270 | add_this_object_header_file PARAMS ((int)); | |
271 | ||
80d68b1d | 272 | /* Free up old header file tables */ |
bd5635a1 | 273 | |
021959e2 | 274 | static void |
80d68b1d | 275 | free_header_files () |
bd5635a1 RP |
276 | { |
277 | register int i; | |
bd5635a1 | 278 | |
80d68b1d FF |
279 | if (header_files != NULL) |
280 | { | |
281 | for (i = 0; i < n_header_files; i++) | |
282 | { | |
283 | free (header_files[i].name); | |
284 | } | |
ac88ca20 | 285 | free ((PTR)header_files); |
80d68b1d FF |
286 | header_files = NULL; |
287 | n_header_files = 0; | |
288 | } | |
289 | if (this_object_header_files) | |
290 | { | |
ac88ca20 | 291 | free ((PTR)this_object_header_files); |
80d68b1d FF |
292 | this_object_header_files = NULL; |
293 | } | |
294 | n_allocated_header_files = 0; | |
295 | n_allocated_this_object_header_files = 0; | |
296 | } | |
297 | ||
298 | /* Allocate new header file tables */ | |
299 | ||
300 | static void | |
301 | init_header_files () | |
302 | { | |
bd5635a1 | 303 | n_header_files = 0; |
80d68b1d FF |
304 | n_allocated_header_files = 10; |
305 | header_files = (struct header_file *) | |
306 | xmalloc (10 * sizeof (struct header_file)); | |
bd5635a1 RP |
307 | |
308 | n_allocated_this_object_header_files = 10; | |
309 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); | |
310 | } | |
311 | ||
bd5635a1 RP |
312 | /* Add header file number I for this object file |
313 | at the next successive FILENUM. */ | |
314 | ||
315 | static void | |
316 | add_this_object_header_file (i) | |
317 | int i; | |
318 | { | |
319 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
320 | { | |
321 | n_allocated_this_object_header_files *= 2; | |
322 | this_object_header_files | |
021959e2 | 323 | = (int *) xrealloc ((char *) this_object_header_files, |
bd5635a1 RP |
324 | n_allocated_this_object_header_files * sizeof (int)); |
325 | } | |
326 | ||
327 | this_object_header_files[n_this_object_header_files++] = i; | |
328 | } | |
329 | ||
330 | /* Add to this file an "old" header file, one already seen in | |
331 | a previous object file. NAME is the header file's name. | |
332 | INSTANCE is its instance code, to select among multiple | |
333 | symbol tables for the same header file. */ | |
334 | ||
335 | static void | |
336 | add_old_header_file (name, instance) | |
337 | char *name; | |
338 | int instance; | |
339 | { | |
340 | register struct header_file *p = header_files; | |
341 | register int i; | |
342 | ||
343 | for (i = 0; i < n_header_files; i++) | |
344 | if (!strcmp (p[i].name, name) && instance == p[i].instance) | |
345 | { | |
346 | add_this_object_header_file (i); | |
347 | return; | |
348 | } | |
9342ecb9 JG |
349 | complain (&repeated_header_complaint, (char *)symnum); |
350 | complain (&repeated_header_name_complaint, name); | |
bd5635a1 RP |
351 | } |
352 | ||
353 | /* Add to this file a "new" header file: definitions for its types follow. | |
354 | NAME is the header file's name. | |
355 | Most often this happens only once for each distinct header file, | |
356 | but not necessarily. If it happens more than once, INSTANCE has | |
357 | a different value each time, and references to the header file | |
358 | use INSTANCE values to select among them. | |
359 | ||
360 | dbx output contains "begin" and "end" markers for each new header file, | |
361 | but at this level we just need to know which files there have been; | |
362 | so we record the file when its "begin" is seen and ignore the "end". */ | |
363 | ||
364 | static void | |
365 | add_new_header_file (name, instance) | |
366 | char *name; | |
367 | int instance; | |
368 | { | |
369 | register int i; | |
bd5635a1 RP |
370 | |
371 | /* Make sure there is room for one more header file. */ | |
372 | ||
373 | if (n_header_files == n_allocated_header_files) | |
374 | { | |
375 | n_allocated_header_files *= 2; | |
376 | header_files = (struct header_file *) | |
021959e2 JG |
377 | xrealloc ((char *) header_files, |
378 | (n_allocated_header_files * sizeof (struct header_file))); | |
bd5635a1 RP |
379 | } |
380 | ||
381 | /* Create an entry for this header file. */ | |
382 | ||
383 | i = n_header_files++; | |
384 | header_files[i].name = savestring (name, strlen(name)); | |
385 | header_files[i].instance = instance; | |
386 | header_files[i].length = 10; | |
387 | header_files[i].vector | |
388 | = (struct type **) xmalloc (10 * sizeof (struct type *)); | |
4ed3a9ea | 389 | memset (header_files[i].vector, 0, 10 * sizeof (struct type *)); |
bd5635a1 RP |
390 | |
391 | add_this_object_header_file (i); | |
392 | } | |
393 | ||
bd5635a1 RP |
394 | #if 0 |
395 | static struct type ** | |
396 | explicit_lookup_type (real_filenum, index) | |
397 | int real_filenum, index; | |
398 | { | |
399 | register struct header_file *f = &header_files[real_filenum]; | |
400 | ||
401 | if (index >= f->length) | |
402 | { | |
403 | f->length *= 2; | |
404 | f->vector = (struct type **) | |
405 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
406 | bzero (&f->vector[f->length / 2], | |
407 | f->length * sizeof (struct type *) / 2); | |
408 | } | |
409 | return &f->vector[index]; | |
410 | } | |
411 | #endif | |
412 | \f | |
9bba3334 | 413 | static void |
021959e2 | 414 | record_minimal_symbol (name, address, type, objfile) |
bd5635a1 RP |
415 | char *name; |
416 | CORE_ADDR address; | |
417 | int type; | |
021959e2 | 418 | struct objfile *objfile; |
bd5635a1 | 419 | { |
021959e2 | 420 | enum minimal_symbol_type ms_type; |
0c4d2cc2 JG |
421 | |
422 | switch (type &~ N_EXT) { | |
021959e2 JG |
423 | case N_TEXT: ms_type = mst_text; break; |
424 | case N_DATA: ms_type = mst_data; break; | |
425 | case N_BSS: ms_type = mst_bss; break; | |
426 | case N_ABS: ms_type = mst_abs; break; | |
0c4d2cc2 | 427 | #ifdef N_SETV |
021959e2 | 428 | case N_SETV: ms_type = mst_data; break; |
0c4d2cc2 | 429 | #endif |
021959e2 | 430 | default: ms_type = mst_unknown; break; |
0c4d2cc2 | 431 | } |
bd5635a1 | 432 | |
021959e2 JG |
433 | prim_record_minimal_symbol (obsavestring (name, strlen (name), &objfile -> symbol_obstack), |
434 | address, ms_type); | |
bd5635a1 RP |
435 | } |
436 | \f | |
437 | /* Scan and build partial symbols for a symbol file. | |
438 | We have been initialized by a call to dbx_symfile_init, which | |
3624c875 FF |
439 | put all the relevant info into a "struct dbx_symfile_info", |
440 | hung off the objfile structure. | |
bd5635a1 | 441 | |
2af231b8 JG |
442 | SECTION_OFFSETS contains offsets relative to which the symbols in the |
443 | various sections are (depending where the sections were actually loaded). | |
bd5635a1 RP |
444 | MAINLINE is true if we are reading the main symbol |
445 | table (as opposed to a shared lib or dynamically loaded file). */ | |
446 | ||
9bba3334 | 447 | static void |
2af231b8 | 448 | dbx_symfile_read (objfile, section_offsets, mainline) |
80d68b1d | 449 | struct objfile *objfile; |
2af231b8 | 450 | struct section_offsets *section_offsets; |
bd5635a1 RP |
451 | int mainline; /* FIXME comments above */ |
452 | { | |
80d68b1d | 453 | bfd *sym_bfd; |
bd5635a1 | 454 | int val; |
bd5635a1 | 455 | |
80d68b1d | 456 | sym_bfd = objfile->obfd; |
3624c875 | 457 | val = bfd_seek (objfile->obfd, DBX_SYMTAB_OFFSET (objfile), L_SET); |
bd5635a1 | 458 | if (val < 0) |
80d68b1d | 459 | perror_with_name (objfile->name); |
bd5635a1 | 460 | |
66eeea27 | 461 | /* If we are reinitializing, or if we have never loaded syms yet, init */ |
80d68b1d | 462 | if (mainline || objfile->global_psymbols.size == 0 || objfile->static_psymbols.size == 0) |
3624c875 | 463 | init_psymbol_list (objfile); |
66eeea27 | 464 | |
7da1e27d SG |
465 | #ifdef hp9000s800 |
466 | symbol_size = obj_dbx_symbol_entry_size (sym_bfd); | |
467 | #else | |
9342ecb9 | 468 | symbol_size = DBX_SYMBOL_SIZE (objfile); |
7da1e27d | 469 | #endif |
9342ecb9 | 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 | { |
c0302457 | 505 | buildsym_new_init (); |
80d68b1d | 506 | init_header_files (); |
bd5635a1 RP |
507 | } |
508 | ||
509 | ||
510 | /* dbx_symfile_init () | |
511 | is the dbx-specific initialization routine for reading symbols. | |
80d68b1d | 512 | It is passed a struct objfile which contains, among other things, |
bd5635a1 RP |
513 | the BFD for the file whose symbols are being read, and a slot for a pointer |
514 | to "private data" which we fill with goodies. | |
515 | ||
516 | We read the string table into malloc'd space and stash a pointer to it. | |
517 | ||
518 | Since BFD doesn't know how to read debug symbols in a format-independent | |
519 | way (and may never do so...), we have to do it ourselves. We will never | |
520 | be called unless this is an a.out (or very similar) file. | |
521 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
522 | ||
9bba3334 | 523 | static void |
80d68b1d FF |
524 | dbx_symfile_init (objfile) |
525 | struct objfile *objfile; | |
bd5635a1 RP |
526 | { |
527 | int val; | |
80d68b1d | 528 | bfd *sym_bfd = objfile->obfd; |
bd5635a1 | 529 | char *name = bfd_get_filename (sym_bfd); |
bd5635a1 RP |
530 | unsigned char size_temp[4]; |
531 | ||
532 | /* Allocate struct to keep track of the symfile */ | |
ac88ca20 | 533 | objfile->sym_private = (PTR) |
3624c875 | 534 | xmmalloc (objfile -> md, sizeof (struct dbx_symfile_info)); |
bd5635a1 RP |
535 | |
536 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
7da1e27d SG |
537 | #ifdef hp9000s800 |
538 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_dbx_str_filepos (sym_bfd)) | |
539 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_dbx_sym_filepos (sym_bfd)) | |
540 | #define HP_STRING_TABLE_OFFSET (sym_bfd->origin + obj_hp_str_filepos (sym_bfd)) | |
541 | #define HP_SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_hp_sym_filepos (sym_bfd)) | |
542 | #else | |
bd5635a1 RP |
543 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
544 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
7da1e27d | 545 | #endif |
bd5635a1 RP |
546 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
547 | ||
784fd92b | 548 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; |
3624c875 FF |
549 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); |
550 | if (!DBX_TEXT_SECT (objfile)) | |
9342ecb9 JG |
551 | error ("Can't find .text section in symbol file"); |
552 | ||
7da1e27d SG |
553 | #ifdef hp9000s800 |
554 | HP_SYMCOUNT (objfile) = obj_hp_sym_count (sym_bfd); | |
555 | DBX_SYMCOUNT (objfile) = obj_dbx_sym_count (sym_bfd); | |
556 | #else | |
bf18ac80 | 557 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); |
7da1e27d SG |
558 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); |
559 | #endif | |
9342ecb9 | 560 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; |
3624c875 FF |
561 | |
562 | /* Read the string table and stash it away in the psymbol_obstack. It is | |
563 | only needed as long as we need to expand psymbols into full symbols, | |
564 | so when we blow away the psymbol the string table goes away as well. | |
565 | Note that gdb used to use the results of attempting to malloc the | |
566 | string table, based on the size it read, as a form of sanity check | |
567 | for botched byte swapping, on the theory that a byte swapped string | |
568 | table size would be so totally bogus that the malloc would fail. Now | |
569 | that we put in on the psymbol_obstack, we can't do this since gdb gets | |
570 | a fatal error (out of virtual memory) if the size is bogus. We can | |
571 | however at least check to see if the size is zero or some negative | |
572 | value. */ | |
bd5635a1 | 573 | |
7da1e27d SG |
574 | #ifdef hp9000s800 |
575 | DBX_STRINGTAB_SIZE (objfile) = obj_dbx_stringtab_size (sym_bfd); | |
576 | HP_STRINGTAB_SIZE (objfile) = obj_hp_stringtab_size (sym_bfd); | |
577 | #else | |
7d9884b9 | 578 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, L_SET); |
bd5635a1 | 579 | if (val < 0) |
3624c875 | 580 | perror_with_name (name); |
bd5635a1 | 581 | |
ac88ca20 | 582 | val = bfd_read ((PTR)size_temp, sizeof (long), 1, sym_bfd); |
bd5635a1 | 583 | if (val < 0) |
3624c875 FF |
584 | perror_with_name (name); |
585 | ||
586 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); | |
7da1e27d SG |
587 | #endif |
588 | ||
3624c875 FF |
589 | if (DBX_STRINGTAB_SIZE (objfile) <= 0) |
590 | error ("ridiculous string table size (%d bytes).", | |
591 | DBX_STRINGTAB_SIZE (objfile)); | |
592 | ||
593 | DBX_STRINGTAB (objfile) = | |
594 | (char *) obstack_alloc (&objfile -> psymbol_obstack, | |
595 | DBX_STRINGTAB_SIZE (objfile)); | |
7da1e27d SG |
596 | #ifdef hp9000s800 |
597 | if (HP_STRINGTAB_SIZE (objfile) <= 0) | |
598 | error ("ridiculous string table size (%d bytes).", | |
599 | HP_STRINGTAB_SIZE (objfile)); | |
600 | ||
601 | HP_STRINGTAB (objfile) = | |
602 | (char *) obstack_alloc (&objfile -> psymbol_obstack, | |
603 | HP_STRINGTAB_SIZE (objfile)); | |
604 | #endif | |
bd5635a1 RP |
605 | |
606 | /* Now read in the string table in one big gulp. */ | |
607 | ||
7d9884b9 | 608 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, L_SET); |
bd5635a1 RP |
609 | if (val < 0) |
610 | perror_with_name (name); | |
3624c875 FF |
611 | val = bfd_read (DBX_STRINGTAB (objfile), DBX_STRINGTAB_SIZE (objfile), 1, |
612 | sym_bfd); | |
613 | if (val != DBX_STRINGTAB_SIZE (objfile)) | |
bd5635a1 | 614 | perror_with_name (name); |
7da1e27d SG |
615 | #ifdef hp9000s800 |
616 | val = bfd_seek (sym_bfd, HP_STRING_TABLE_OFFSET, L_SET); | |
617 | if (val < 0) | |
618 | perror_with_name (name); | |
619 | val = bfd_read (HP_STRINGTAB (objfile), HP_STRINGTAB_SIZE (objfile), 1, | |
620 | sym_bfd); | |
621 | if (val != HP_STRINGTAB_SIZE (objfile)) | |
622 | perror_with_name (name); | |
623 | #endif | |
624 | #ifdef hp9000s800 | |
625 | HP_SYMTAB_OFFSET (objfile) = HP_SYMBOL_TABLE_OFFSET; | |
626 | #endif | |
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 | 679 | } |
7da1e27d SG |
680 | #ifdef hp9000s800 |
681 | /* same as above for the HP symbol table */ | |
682 | ||
683 | static struct symbol_dictionary_record hp_symbuf[4096]; | |
684 | static int hp_symbuf_idx; | |
685 | static int hp_symbuf_end; | |
686 | ||
687 | static int | |
688 | fill_hp_symbuf (sym_bfd) | |
689 | bfd *sym_bfd; | |
690 | { | |
691 | int nbytes = bfd_read ((PTR)hp_symbuf, sizeof (hp_symbuf), 1, sym_bfd); | |
692 | if (nbytes <= 0) | |
693 | error ("error or end of file reading symbol table"); | |
694 | hp_symbuf_end = nbytes / sizeof (struct symbol_dictionary_record); | |
695 | hp_symbuf_idx = 0; | |
696 | return 1; | |
697 | } | |
698 | #endif | |
bd5635a1 | 699 | |
7d9884b9 | 700 | #define SWAP_SYMBOL(symp, abfd) \ |
bd5635a1 | 701 | { \ |
7d9884b9 | 702 | (symp)->n_strx = bfd_h_get_32(abfd, \ |
afe4ca15 | 703 | (unsigned char *)&(symp)->n_strx); \ |
7d9884b9 | 704 | (symp)->n_desc = bfd_h_get_16 (abfd, \ |
bd5635a1 | 705 | (unsigned char *)&(symp)->n_desc); \ |
7d9884b9 | 706 | (symp)->n_value = bfd_h_get_32 (abfd, \ |
bd5635a1 RP |
707 | (unsigned char *)&(symp)->n_value); \ |
708 | } | |
709 | ||
710 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
711 | that hasn't been swapped. Swap the symbol at the same time | |
712 | that symbuf_idx is incremented. */ | |
713 | ||
714 | /* dbx allows the text of a symbol name to be continued into the | |
715 | next symbol name! When such a continuation is encountered | |
716 | (a \ at the end of the text of a name) | |
717 | call this function to get the continuation. */ | |
718 | ||
021959e2 | 719 | static char * |
aab77d5f | 720 | dbx_next_symbol_text () |
bd5635a1 RP |
721 | { |
722 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 723 | fill_symbuf (symfile_bfd); |
bd5635a1 | 724 | symnum++; |
7d9884b9 | 725 | SWAP_SYMBOL(&symbuf[symbuf_idx], symfile_bfd); |
9342ecb9 JG |
726 | return symbuf[symbuf_idx++].n_strx + stringtab_global |
727 | + file_string_table_offset; | |
bd5635a1 RP |
728 | } |
729 | \f | |
730 | /* Initializes storage for all of the partial symbols that will be | |
731 | created by read_dbx_symtab and subsidiaries. */ | |
732 | ||
733 | static void | |
3624c875 | 734 | init_psymbol_list (objfile) |
021959e2 | 735 | struct objfile *objfile; |
bd5635a1 RP |
736 | { |
737 | /* Free any previously allocated psymbol lists. */ | |
021959e2 | 738 | if (objfile -> global_psymbols.list) |
ac88ca20 | 739 | mfree (objfile -> md, (PTR)objfile -> global_psymbols.list); |
021959e2 | 740 | if (objfile -> static_psymbols.list) |
ac88ca20 | 741 | mfree (objfile -> md, (PTR)objfile -> static_psymbols.list); |
bd5635a1 RP |
742 | |
743 | /* Current best guess is that there are approximately a twentieth | |
744 | of the total symbols (in a debugging file) are global or static | |
745 | oriented symbols */ | |
7da1e27d SG |
746 | #ifdef hp9000s800 |
747 | objfile -> global_psymbols.size = (DBX_SYMCOUNT (objfile) + | |
748 | HP_SYMCOUNT (objfile)) / 10; | |
749 | objfile -> static_psymbols.size = (DBX_SYMCOUNT (objfile) + | |
750 | HP_SYMCOUNT (objfile)) / 10; | |
751 | #else | |
3624c875 FF |
752 | objfile -> global_psymbols.size = DBX_SYMCOUNT (objfile) / 10; |
753 | objfile -> static_psymbols.size = DBX_SYMCOUNT (objfile) / 10; | |
7da1e27d | 754 | #endif |
021959e2 | 755 | objfile -> global_psymbols.next = objfile -> global_psymbols.list = (struct partial_symbol *) |
318bf84f | 756 | xmmalloc (objfile -> md, objfile -> global_psymbols.size * sizeof (struct partial_symbol)); |
021959e2 | 757 | objfile -> static_psymbols.next = objfile -> static_psymbols.list = (struct partial_symbol *) |
318bf84f | 758 | xmmalloc (objfile -> md, objfile -> static_psymbols.size * sizeof (struct partial_symbol)); |
bd5635a1 RP |
759 | } |
760 | ||
761 | /* Initialize the list of bincls to contain none and have some | |
762 | allocated. */ | |
763 | ||
764 | static void | |
021959e2 | 765 | init_bincl_list (number, objfile) |
bd5635a1 | 766 | int number; |
021959e2 | 767 | struct objfile *objfile; |
bd5635a1 RP |
768 | { |
769 | bincls_allocated = number; | |
770 | next_bincl = bincl_list = (struct header_file_location *) | |
318bf84f | 771 | xmmalloc (objfile -> md, bincls_allocated * sizeof(struct header_file_location)); |
bd5635a1 RP |
772 | } |
773 | ||
774 | /* Add a bincl to the list. */ | |
775 | ||
776 | static void | |
777 | add_bincl_to_list (pst, name, instance) | |
778 | struct partial_symtab *pst; | |
779 | char *name; | |
780 | int instance; | |
781 | { | |
782 | if (next_bincl >= bincl_list + bincls_allocated) | |
783 | { | |
784 | int offset = next_bincl - bincl_list; | |
785 | bincls_allocated *= 2; | |
786 | bincl_list = (struct header_file_location *) | |
318bf84f | 787 | xmrealloc (pst->objfile->md, (char *)bincl_list, |
bd5635a1 RP |
788 | bincls_allocated * sizeof (struct header_file_location)); |
789 | next_bincl = bincl_list + offset; | |
790 | } | |
791 | next_bincl->pst = pst; | |
792 | next_bincl->instance = instance; | |
793 | next_bincl++->name = name; | |
794 | } | |
795 | ||
796 | /* Given a name, value pair, find the corresponding | |
797 | bincl in the list. Return the partial symtab associated | |
798 | with that header_file_location. */ | |
799 | ||
9bba3334 | 800 | static struct partial_symtab * |
bd5635a1 RP |
801 | find_corresponding_bincl_psymtab (name, instance) |
802 | char *name; | |
803 | int instance; | |
804 | { | |
805 | struct header_file_location *bincl; | |
806 | ||
807 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
808 | if (bincl->instance == instance | |
809 | && !strcmp (name, bincl->name)) | |
810 | return bincl->pst; | |
811 | ||
812 | return (struct partial_symtab *) 0; | |
813 | } | |
814 | ||
815 | /* Free the storage allocated for the bincl list. */ | |
816 | ||
817 | static void | |
021959e2 JG |
818 | free_bincl_list (objfile) |
819 | struct objfile *objfile; | |
bd5635a1 | 820 | { |
ac88ca20 | 821 | mfree (objfile -> md, (PTR)bincl_list); |
bd5635a1 RP |
822 | bincls_allocated = 0; |
823 | } | |
824 | ||
bd5635a1 RP |
825 | /* Given pointers to an a.out symbol table in core containing dbx |
826 | style data, setup partial_symtab's describing each source file for | |
3624c875 FF |
827 | which debugging information is available. |
828 | SYMFILE_NAME is the name of the file we are reading from | |
2af231b8 JG |
829 | and SECTION_OFFSETS is the set of offsets for the various sections |
830 | of the file (a set of zeros if the mainline program). */ | |
bd5635a1 RP |
831 | |
832 | static void | |
2af231b8 JG |
833 | read_dbx_symtab (section_offsets, objfile, text_addr, text_size) |
834 | struct section_offsets *section_offsets; | |
7d9884b9 | 835 | struct objfile *objfile; |
bd5635a1 RP |
836 | CORE_ADDR text_addr; |
837 | int text_size; | |
838 | { | |
ac88ca20 | 839 | register struct internal_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
bd5635a1 | 840 | register char *namestring; |
bd5635a1 RP |
841 | int nsl; |
842 | int past_first_source_file = 0; | |
843 | CORE_ADDR last_o_file_start = 0; | |
844 | struct cleanup *old_chain; | |
7d9884b9 | 845 | bfd *abfd; |
7da1e27d SG |
846 | #ifdef hp9000s800 |
847 | /* HP stuff */ | |
848 | struct symbol_dictionary_record *hp_bufp; | |
849 | int hp_symnum; | |
850 | /* A hack: the first text symbol in the debugging library */ | |
851 | int dbsubc_addr = 0; | |
852 | #endif | |
853 | ||
bd5635a1 RP |
854 | |
855 | /* End of the text segment of the executable file. */ | |
856 | CORE_ADDR end_of_text_addr; | |
857 | ||
858 | /* Current partial symtab */ | |
859 | struct partial_symtab *pst; | |
860 | ||
861 | /* List of current psymtab's include files */ | |
862 | char **psymtab_include_list; | |
863 | int includes_allocated; | |
864 | int includes_used; | |
865 | ||
866 | /* Index within current psymtab dependency list */ | |
867 | struct partial_symtab **dependency_list; | |
868 | int dependencies_used, dependencies_allocated; | |
869 | ||
9342ecb9 JG |
870 | /* FIXME. We probably want to change stringtab_global rather than add this |
871 | while processing every symbol entry. FIXME. */ | |
872 | file_string_table_offset = 0; | |
873 | next_file_string_table_offset = 0; | |
874 | ||
7da1e27d SG |
875 | #ifdef hp9000s800 |
876 | stringtab_global = HP_STRINGTAB (objfile); | |
877 | #else | |
3624c875 | 878 | stringtab_global = DBX_STRINGTAB (objfile); |
7da1e27d | 879 | #endif |
bd5635a1 RP |
880 | |
881 | pst = (struct partial_symtab *) 0; | |
882 | ||
883 | includes_allocated = 30; | |
884 | includes_used = 0; | |
885 | psymtab_include_list = (char **) alloca (includes_allocated * | |
886 | sizeof (char *)); | |
887 | ||
888 | dependencies_allocated = 30; | |
889 | dependencies_used = 0; | |
890 | dependency_list = | |
891 | (struct partial_symtab **) alloca (dependencies_allocated * | |
892 | sizeof (struct partial_symtab *)); | |
893 | ||
7d9884b9 | 894 | old_chain = make_cleanup (free_objfile, objfile); |
bd5635a1 RP |
895 | |
896 | /* Init bincl list */ | |
021959e2 JG |
897 | init_bincl_list (20, objfile); |
898 | make_cleanup (free_bincl_list, objfile); | |
bd5635a1 RP |
899 | |
900 | last_source_file = 0; | |
901 | ||
902 | #ifdef END_OF_TEXT_DEFAULT | |
903 | end_of_text_addr = END_OF_TEXT_DEFAULT; | |
904 | #else | |
2af231b8 JG |
905 | end_of_text_addr = text_addr + section_offsets->offsets[SECT_OFF_TEXT] |
906 | + text_size; /* Relocate */ | |
bd5635a1 RP |
907 | #endif |
908 | ||
7d9884b9 JG |
909 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ |
910 | abfd = objfile->obfd; | |
bd5635a1 | 911 | symbuf_end = symbuf_idx = 0; |
aab77d5f | 912 | next_symbol_text_func = dbx_next_symbol_text; |
bd5635a1 | 913 | |
7da1e27d SG |
914 | #ifdef hp9000s800 |
915 | /* On pa machines, the global symbols are all in the regular HP-UX | |
916 | symbol table. Read them in first. */ | |
917 | ||
918 | hp_symbuf_end = hp_symbuf_idx = 0; | |
919 | bfd_seek (abfd, HP_SYMTAB_OFFSET (objfile), 0); | |
920 | ||
921 | for (hp_symnum = 0; hp_symnum < HP_SYMCOUNT (objfile); hp_symnum++) | |
922 | { | |
923 | int dbx_type; | |
924 | ||
925 | QUIT; | |
926 | if (hp_symbuf_idx == hp_symbuf_end) | |
927 | fill_hp_symbuf (abfd); | |
928 | hp_bufp = &hp_symbuf[hp_symbuf_idx++]; | |
929 | switch (hp_bufp->symbol_type) | |
930 | { | |
931 | case ST_SYM_EXT: | |
932 | case ST_ARG_EXT: | |
933 | continue; | |
934 | case ST_CODE: | |
935 | case ST_PRI_PROG: | |
936 | case ST_SEC_PROG: | |
937 | case ST_ENTRY: | |
938 | case ST_MILLICODE: | |
939 | dbx_type = N_TEXT; | |
940 | hp_bufp->symbol_value &= ~3; /* clear out permission bits */ | |
941 | break; | |
942 | case ST_DATA: | |
943 | dbx_type = N_DATA; | |
944 | break; | |
945 | #ifdef KERNELDEBUG | |
946 | case ST_ABSOLUTE: | |
947 | { | |
948 | extern int kernel_debugging; | |
949 | if (!kernel_debugging) | |
950 | continue; | |
951 | dbx_type = N_ABS; | |
952 | break; | |
953 | } | |
954 | #endif | |
955 | default: | |
956 | continue; | |
957 | } | |
958 | /* Use the address of dbsubc to finish the last psymtab. */ | |
959 | if (hp_bufp->symbol_type == ST_CODE && | |
960 | HP_STRINGTAB (objfile)[hp_bufp->name.n_strx] == '_' && | |
961 | !strcmp (HP_STRINGTAB (objfile) + hp_bufp->name.n_strx, "_dbsubc")) | |
962 | dbsubc_addr = hp_bufp->symbol_value; | |
963 | if (hp_bufp->symbol_scope == SS_UNIVERSAL) | |
964 | { | |
965 | if (hp_bufp->name.n_strx > HP_STRINGTAB_SIZE (objfile)) | |
966 | error ("Invalid symbol data; bad HP string table offset: %d", | |
967 | hp_bufp->name.n_strx); | |
968 | /* A hack, but gets the job done. */ | |
969 | if (!strcmp (hp_bufp->name.n_strx + HP_STRINGTAB (objfile), | |
970 | "$START$")) | |
971 | objfile -> ei.entry_file_lowpc = hp_bufp->symbol_value; | |
972 | if (!strcmp (hp_bufp->name.n_strx + HP_STRINGTAB (objfile), | |
973 | "_sr4export")) | |
974 | objfile -> ei.entry_file_highpc = hp_bufp->symbol_value; | |
975 | record_minimal_symbol (hp_bufp->name.n_strx + HP_STRINGTAB (objfile), | |
976 | hp_bufp->symbol_value, dbx_type | N_EXT, | |
977 | objfile); | |
978 | } | |
979 | } | |
980 | bfd_seek (abfd, DBX_SYMTAB_OFFSET (objfile), 0); | |
981 | #endif | |
982 | ||
3624c875 | 983 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
bd5635a1 RP |
984 | { |
985 | /* Get the symbol for this run and pull out some info */ | |
986 | QUIT; /* allow this to be interruptable */ | |
987 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 988 | fill_symbuf (abfd); |
bd5635a1 RP |
989 | bufp = &symbuf[symbuf_idx++]; |
990 | ||
991 | /* | |
992 | * Special case to speed up readin. | |
993 | */ | |
994 | if (bufp->n_type == (unsigned char)N_SLINE) continue; | |
995 | ||
7d9884b9 | 996 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 RP |
997 | |
998 | /* Ok. There is a lot of code duplicated in the rest of this | |
999 | switch statement (for efficiency reasons). Since I don't | |
1000 | like duplicating code, I will do my penance here, and | |
1001 | describe the code which is duplicated: | |
1002 | ||
1003 | *) The assignment to namestring. | |
1004 | *) The call to strchr. | |
1005 | *) The addition of a partial symbol the the two partial | |
1006 | symbol lists. This last is a large section of code, so | |
1007 | I've imbedded it in the following macro. | |
1008 | */ | |
1009 | ||
1010 | /* Set namestring based on bufp. If the string table index is invalid, | |
1011 | give a fake name, and print a single error message per symbol file read, | |
1012 | rather than abort the symbol reading or flood the user with messages. */ | |
9342ecb9 JG |
1013 | |
1014 | /*FIXME: Too many adds and indirections in here for the inner loop. */ | |
bd5635a1 | 1015 | #define SET_NAMESTRING()\ |
9342ecb9 JG |
1016 | if (((unsigned)bufp->n_strx + file_string_table_offset) >= \ |
1017 | DBX_STRINGTAB_SIZE (objfile)) { \ | |
021959e2 | 1018 | complain (&string_table_offset_complaint, (char *) symnum); \ |
bd5635a1 RP |
1019 | namestring = "foo"; \ |
1020 | } else \ | |
9342ecb9 JG |
1021 | namestring = bufp->n_strx + file_string_table_offset + \ |
1022 | DBX_STRINGTAB (objfile) | |
bd5635a1 | 1023 | |
7e258d18 PB |
1024 | #define CUR_SYMBOL_TYPE bufp->n_type |
1025 | #define CUR_SYMBOL_VALUE bufp->n_value | |
1026 | #define DBXREAD_ONLY | |
2af231b8 JG |
1027 | #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\ |
1028 | start_psymtab(ofile, secoff, fname, low, symoff, global_syms, static_syms) | |
7e258d18 PB |
1029 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps)\ |
1030 | end_psymtab(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) | |
aab77d5f | 1031 | |
7e258d18 | 1032 | #include "partial-stab.h" |
bd5635a1 RP |
1033 | } |
1034 | ||
1035 | /* If there's stuff to be cleaned up, clean it up. */ | |
7da1e27d | 1036 | #ifndef hp9000s800 |
3624c875 | 1037 | if (DBX_SYMCOUNT (objfile) > 0 /* We have some syms */ |
9342ecb9 JG |
1038 | /*FIXME, does this have a bug at start address 0? */ |
1039 | && last_o_file_start | |
3624c875 FF |
1040 | && objfile -> ei.entry_point < bufp->n_value |
1041 | && objfile -> ei.entry_point >= last_o_file_start) | |
bd5635a1 | 1042 | { |
3624c875 FF |
1043 | objfile -> ei.entry_file_lowpc = last_o_file_start; |
1044 | objfile -> ei.entry_file_highpc = bufp->n_value; | |
bd5635a1 | 1045 | } |
7da1e27d | 1046 | #endif |
bd5635a1 RP |
1047 | |
1048 | if (pst) | |
1049 | { | |
7da1e27d SG |
1050 | #ifdef hp9000s800 |
1051 | end_psymtab (pst, psymtab_include_list, includes_used, | |
1052 | symnum * symbol_size, dbsubc_addr, | |
1053 | dependency_list, dependencies_used); | |
1054 | #else | |
bd5635a1 | 1055 | end_psymtab (pst, psymtab_include_list, includes_used, |
afe4ca15 | 1056 | symnum * symbol_size, end_of_text_addr, |
7e258d18 | 1057 | dependency_list, dependencies_used); |
7da1e27d | 1058 | #endif |
bd5635a1 RP |
1059 | } |
1060 | ||
021959e2 | 1061 | free_bincl_list (objfile); |
bd5635a1 RP |
1062 | discard_cleanups (old_chain); |
1063 | } | |
1064 | ||
4a35d6e9 FF |
1065 | /* Allocate and partially fill a partial symtab. It will be |
1066 | completely filled at the end of the symbol list. | |
1067 | ||
1068 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1069 | is the address relative to which its symbols are (incremental) or 0 | |
1070 | (normal). */ | |
1071 | ||
bd5635a1 | 1072 | |
7e258d18 | 1073 | struct partial_symtab * |
2af231b8 | 1074 | start_psymtab (objfile, section_offsets, |
bd5635a1 | 1075 | filename, textlow, ldsymoff, global_syms, static_syms) |
7d9884b9 | 1076 | struct objfile *objfile; |
2af231b8 | 1077 | struct section_offsets *section_offsets; |
bd5635a1 RP |
1078 | char *filename; |
1079 | CORE_ADDR textlow; | |
1080 | int ldsymoff; | |
1081 | struct partial_symbol *global_syms; | |
1082 | struct partial_symbol *static_syms; | |
1083 | { | |
1084 | struct partial_symtab *result = | |
2af231b8 | 1085 | start_psymtab_common(objfile, section_offsets, |
021959e2 | 1086 | filename, textlow, global_syms, static_syms); |
bd5635a1 | 1087 | |
021959e2 JG |
1088 | result->read_symtab_private = (char *) |
1089 | obstack_alloc (&objfile -> psymbol_obstack, sizeof (struct symloc)); | |
1090 | LDSYMOFF(result) = ldsymoff; | |
bd5635a1 | 1091 | result->read_symtab = dbx_psymtab_to_symtab; |
9342ecb9 JG |
1092 | SYMBOL_SIZE(result) = symbol_size; |
1093 | SYMBOL_OFFSET(result) = symbol_table_offset; | |
1094 | STRING_OFFSET(result) = string_table_offset; | |
1095 | FILE_STRING_OFFSET(result) = file_string_table_offset; | |
bd5635a1 | 1096 | |
2af231b8 JG |
1097 | /* If we're handling an ELF file, drag some section-relocation info |
1098 | for this source file out of the ELF symbol table, to compensate for | |
1099 | Sun brain death. This replaces the section_offsets in this psymtab, | |
1100 | if successful. */ | |
1101 | elfstab_offset_sections (objfile, result); | |
1102 | ||
bd5635a1 RP |
1103 | return result; |
1104 | } | |
1105 | ||
bd5635a1 RP |
1106 | /* Close off the current usage of a partial_symbol table entry. This |
1107 | involves setting the correct number of includes (with a realloc), | |
1108 | setting the high text mark, setting the symbol length in the | |
1109 | executable, and setting the length of the global and static lists | |
1110 | of psymbols. | |
1111 | ||
1112 | The global symbols and static symbols are then seperately sorted. | |
1113 | ||
1114 | Then the partial symtab is put on the global list. | |
1115 | *** List variables and peculiarities of same. *** | |
1116 | */ | |
021959e2 | 1117 | |
7e258d18 | 1118 | void |
bd5635a1 | 1119 | end_psymtab (pst, include_list, num_includes, capping_symbol_offset, |
7e258d18 | 1120 | capping_text, dependency_list, number_dependencies) |
bd5635a1 RP |
1121 | struct partial_symtab *pst; |
1122 | char **include_list; | |
1123 | int num_includes; | |
1124 | int capping_symbol_offset; | |
1125 | CORE_ADDR capping_text; | |
1126 | struct partial_symtab **dependency_list; | |
1127 | int number_dependencies; | |
7e258d18 | 1128 | /* struct partial_symbol *capping_global, *capping_static;*/ |
bd5635a1 RP |
1129 | { |
1130 | int i; | |
9342ecb9 | 1131 | struct partial_symtab *p1; |
021959e2 | 1132 | struct objfile *objfile = pst -> objfile; |
bd5635a1 | 1133 | |
7e258d18 PB |
1134 | if (capping_symbol_offset != -1) |
1135 | LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst); | |
bd5635a1 RP |
1136 | pst->texthigh = capping_text; |
1137 | ||
9342ecb9 JG |
1138 | /* Under Solaris, the N_SO symbols always have a value of 0, |
1139 | instead of the usual address of the .o file. Therefore, | |
1140 | we have to do some tricks to fill in texthigh and textlow. | |
1141 | The first trick is in partial-stab.h: if we see a static | |
1142 | or global function, and the textlow for the current pst | |
1143 | is still 0, then we use that function's address for | |
1144 | the textlow of the pst. | |
1145 | ||
1146 | Now, to fill in texthigh, we remember the last function seen | |
1147 | in the .o file (also in partial-stab.h). Also, there's a hack in | |
1148 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field | |
1149 | to here via the misc_info field. Therefore, we can fill in | |
1150 | a reliable texthigh by taking the address plus size of the | |
1151 | last function in the file. | |
1152 | ||
1153 | Unfortunately, that does not cover the case where the last function | |
1154 | in the file is static. See the paragraph below for more comments | |
1155 | on this situation. | |
1156 | ||
1157 | Finally, if we have a valid textlow for the current file, we run | |
1158 | down the partial_symtab_list filling in previous texthighs that | |
1159 | are still unknown. */ | |
1160 | ||
bcbf9559 | 1161 | if (pst->texthigh == 0 && last_function_name) { |
9342ecb9 JG |
1162 | char *p; |
1163 | int n; | |
1164 | struct minimal_symbol *minsym; | |
1165 | ||
1166 | p = strchr (last_function_name, ':'); | |
1167 | if (p == NULL) | |
1168 | p = last_function_name; | |
1169 | n = p - last_function_name; | |
1170 | p = alloca (n + 1); | |
1171 | strncpy (p, last_function_name, n); | |
1172 | p[n] = 0; | |
1173 | ||
1174 | minsym = lookup_minimal_symbol (p, objfile); | |
1175 | ||
1176 | if (minsym) { | |
1177 | pst->texthigh = minsym->address + (int)minsym->info; | |
1178 | } else { | |
1179 | /* This file ends with a static function, and it's | |
1180 | difficult to imagine how hard it would be to track down | |
1181 | the elf symbol. Luckily, most of the time no one will notice, | |
1182 | since the next file will likely be compiled with -g, so | |
1183 | the code below will copy the first fuction's start address | |
1184 | back to our texthigh variable. (Also, if this file is the | |
1185 | last one in a dynamically linked program, texthigh already | |
1186 | has the right value.) If the next file isn't compiled | |
1187 | with -g, then the last function in this file winds up owning | |
1188 | all of the text space up to the next -g file, or the end (minus | |
1189 | shared libraries). This only matters for single stepping, | |
1190 | and even then it will still work, except that it will single | |
1191 | step through all of the covered functions, instead of setting | |
1192 | breakpoints around them as it usualy does. This makes it | |
1193 | pretty slow, but at least it doesn't fail. | |
1194 | ||
1195 | We can fix this with a fairly big change to bfd, but we need | |
1196 | to coordinate better with Cygnus if we want to do that. FIXME. */ | |
1197 | } | |
1198 | last_function_name = NULL; | |
1199 | } | |
1200 | ||
1201 | /* this test will be true if the last .o file is only data */ | |
1202 | if (pst->textlow == 0) | |
1203 | pst->textlow = pst->texthigh; | |
1204 | ||
bcbf9559 JG |
1205 | /* If we know our own starting text address, then walk through all other |
1206 | psymtabs for this objfile, and if any didn't know their ending text | |
1207 | address, set it to our starting address. Take care to not set our | |
1208 | own ending address to our starting address, nor to set addresses on | |
1209 | `dependency' files that have both textlow and texthigh zero. */ | |
9342ecb9 JG |
1210 | if (pst->textlow) { |
1211 | ALL_OBJFILE_PSYMTABS (objfile, p1) { | |
bcbf9559 | 1212 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) { |
9342ecb9 JG |
1213 | p1->texthigh = pst->textlow; |
1214 | /* if this file has only data, then make textlow match texthigh */ | |
1215 | if (p1->textlow == 0) | |
1216 | p1->textlow = p1->texthigh; | |
1217 | } | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
1222 | ||
1223 | ||
bd5635a1 | 1224 | pst->n_global_syms = |
021959e2 | 1225 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); |
bd5635a1 | 1226 | pst->n_static_syms = |
021959e2 | 1227 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); |
bd5635a1 RP |
1228 | |
1229 | pst->number_of_dependencies = number_dependencies; | |
1230 | if (number_dependencies) | |
1231 | { | |
1232 | pst->dependencies = (struct partial_symtab **) | |
021959e2 | 1233 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 | 1234 | number_dependencies * sizeof (struct partial_symtab *)); |
7e258d18 | 1235 | memcpy (pst->dependencies, dependency_list, |
bd5635a1 RP |
1236 | number_dependencies * sizeof (struct partial_symtab *)); |
1237 | } | |
1238 | else | |
1239 | pst->dependencies = 0; | |
1240 | ||
1241 | for (i = 0; i < num_includes; i++) | |
1242 | { | |
bd5635a1 | 1243 | struct partial_symtab *subpst = |
021959e2 | 1244 | allocate_psymtab (include_list[i], objfile); |
7d9884b9 | 1245 | |
2af231b8 | 1246 | subpst->section_offsets = pst->section_offsets; |
021959e2 JG |
1247 | subpst->read_symtab_private = |
1248 | (char *) obstack_alloc (&objfile->psymbol_obstack, | |
1249 | sizeof (struct symloc)); | |
4a35d6e9 FF |
1250 | LDSYMOFF(subpst) = |
1251 | LDSYMLEN(subpst) = | |
bd5635a1 RP |
1252 | subpst->textlow = |
1253 | subpst->texthigh = 0; | |
1254 | ||
3f83182d JG |
1255 | /* We could save slight bits of space by only making one of these, |
1256 | shared by the entire set of include files. FIXME-someday. */ | |
bd5635a1 | 1257 | subpst->dependencies = (struct partial_symtab **) |
021959e2 | 1258 | obstack_alloc (&objfile->psymbol_obstack, |
bd5635a1 RP |
1259 | sizeof (struct partial_symtab *)); |
1260 | subpst->dependencies[0] = pst; | |
1261 | subpst->number_of_dependencies = 1; | |
1262 | ||
1263 | subpst->globals_offset = | |
1264 | subpst->n_global_syms = | |
1265 | subpst->statics_offset = | |
1266 | subpst->n_static_syms = 0; | |
1267 | ||
1268 | subpst->readin = 0; | |
9a822037 | 1269 | subpst->symtab = 0; |
bd5635a1 | 1270 | subpst->read_symtab = dbx_psymtab_to_symtab; |
bd5635a1 RP |
1271 | } |
1272 | ||
021959e2 | 1273 | sort_pst_symbols (pst); |
bd5635a1 | 1274 | |
f9623881 JG |
1275 | /* If there is already a psymtab or symtab for a file of this name, remove it. |
1276 | (If there is a symtab, more drastic things also happen.) | |
1277 | This happens in VxWorks. */ | |
1278 | free_named_symtabs (pst->filename); | |
1279 | ||
7d9884b9 JG |
1280 | if (num_includes == 0 |
1281 | && number_dependencies == 0 | |
1282 | && pst->n_global_syms == 0 | |
1283 | && pst->n_static_syms == 0) { | |
1284 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
1285 | it is on the obstack, but we can forget to chain it on the list. */ | |
318bf84f FF |
1286 | struct partial_symtab *prev_pst; |
1287 | ||
1288 | /* First, snip it out of the psymtab chain */ | |
1289 | ||
1290 | if (pst->objfile->psymtabs == pst) | |
1291 | pst->objfile->psymtabs = pst->next; | |
1292 | else | |
1293 | for (prev_pst = pst->objfile->psymtabs; prev_pst; prev_pst = pst->next) | |
1294 | if (prev_pst->next == pst) | |
1295 | prev_pst->next = pst->next; | |
1296 | ||
1297 | /* Next, put it on a free list for recycling */ | |
1298 | ||
1299 | pst->next = pst->objfile->free_psymtabs; | |
1300 | pst->objfile->free_psymtabs = pst; | |
7d9884b9 | 1301 | } |
bd5635a1 RP |
1302 | } |
1303 | \f | |
1304 | static void | |
4c07f28d | 1305 | dbx_psymtab_to_symtab_1 (pst) |
bd5635a1 | 1306 | struct partial_symtab *pst; |
bd5635a1 RP |
1307 | { |
1308 | struct cleanup *old_chain; | |
1309 | int i; | |
1310 | ||
1311 | if (!pst) | |
1312 | return; | |
1313 | ||
1314 | if (pst->readin) | |
1315 | { | |
1316 | fprintf (stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1317 | pst->filename); | |
1318 | return; | |
1319 | } | |
1320 | ||
afe4ca15 | 1321 | /* Read in all partial symtabs on which this one is dependent */ |
bd5635a1 RP |
1322 | for (i = 0; i < pst->number_of_dependencies; i++) |
1323 | if (!pst->dependencies[i]->readin) | |
1324 | { | |
1325 | /* Inform about additional files that need to be read in. */ | |
1326 | if (info_verbose) | |
1327 | { | |
1328 | fputs_filtered (" ", stdout); | |
1329 | wrap_here (""); | |
1330 | fputs_filtered ("and ", stdout); | |
1331 | wrap_here (""); | |
1332 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
1333 | wrap_here (""); /* Flush output */ | |
1334 | fflush (stdout); | |
1335 | } | |
4c07f28d | 1336 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); |
bd5635a1 RP |
1337 | } |
1338 | ||
4a35d6e9 | 1339 | if (LDSYMLEN(pst)) /* Otherwise it's a dummy */ |
bd5635a1 RP |
1340 | { |
1341 | /* Init stuff necessary for reading in symbols */ | |
c0302457 | 1342 | buildsym_init (); |
bd5635a1 | 1343 | old_chain = make_cleanup (really_free_pendings, 0); |
9342ecb9 | 1344 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
7da1e27d SG |
1345 | #ifdef hp9000s800 |
1346 | symbol_size = obj_dbx_symbol_entry_size (sym_bfd); | |
1347 | #else | |
4c07f28d | 1348 | symbol_size = SYMBOL_SIZE (pst); |
7da1e27d | 1349 | #endif |
4c07f28d FF |
1350 | |
1351 | /* Read in this file's symbols */ | |
1352 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst), L_SET); | |
9404978d | 1353 | pst->symtab = |
3624c875 FF |
1354 | read_ofile_symtab (pst->objfile, LDSYMOFF(pst), LDSYMLEN(pst), |
1355 | pst->textlow, pst->texthigh - pst->textlow, | |
2af231b8 | 1356 | pst->section_offsets); |
9404978d | 1357 | sort_symtab_syms (pst->symtab); |
bd5635a1 RP |
1358 | |
1359 | do_cleanups (old_chain); | |
1360 | } | |
1361 | ||
1362 | pst->readin = 1; | |
1363 | } | |
1364 | ||
ac88ca20 JG |
1365 | /* Read in all of the symbols for a given psymtab for real. |
1366 | Be verbose about it if the user wants that. */ | |
1367 | ||
bd5635a1 RP |
1368 | static void |
1369 | dbx_psymtab_to_symtab (pst) | |
1370 | struct partial_symtab *pst; | |
1371 | { | |
bd5635a1 | 1372 | bfd *sym_bfd; |
bd5635a1 RP |
1373 | |
1374 | if (!pst) | |
1375 | return; | |
1376 | ||
1377 | if (pst->readin) | |
1378 | { | |
1379 | fprintf (stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1380 | pst->filename); | |
1381 | return; | |
1382 | } | |
1383 | ||
4a35d6e9 | 1384 | if (LDSYMLEN(pst) || pst->number_of_dependencies) |
bd5635a1 RP |
1385 | { |
1386 | /* Print the message now, before reading the string table, | |
1387 | to avoid disconcerting pauses. */ | |
1388 | if (info_verbose) | |
1389 | { | |
1390 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1391 | fflush (stdout); | |
1392 | } | |
1393 | ||
7d9884b9 | 1394 | sym_bfd = pst->objfile->obfd; |
bd5635a1 | 1395 | |
aab77d5f PB |
1396 | next_symbol_text_func = dbx_next_symbol_text; |
1397 | ||
4c07f28d | 1398 | dbx_psymtab_to_symtab_1 (pst); |
bd5635a1 RP |
1399 | |
1400 | /* Match with global symbols. This only needs to be done once, | |
1401 | after all of the symtabs and dependencies have been read in. */ | |
021959e2 | 1402 | scan_file_globals (pst->objfile); |
bd5635a1 | 1403 | |
bd5635a1 RP |
1404 | /* Finish up the debug error message. */ |
1405 | if (info_verbose) | |
1406 | printf_filtered ("done.\n"); | |
1407 | } | |
1408 | } | |
1409 | ||
9342ecb9 JG |
1410 | /* Read in a defined section of a specific object file's symbols. |
1411 | ||
1412 | DESC is the file descriptor for the file, positioned at the | |
1413 | beginning of the symtab | |
1414 | SYM_OFFSET is the offset within the file of | |
1415 | the beginning of the symbols we want to read | |
1416 | SYM_SIZE is the size of the symbol info to read in. | |
1417 | TEXT_OFFSET is the beginning of the text segment we are reading symbols for | |
1418 | TEXT_SIZE is the size of the text segment read in. | |
2af231b8 | 1419 | SECTION_OFFSETS are the relocation offsets which get added to each symbol. */ |
bd5635a1 | 1420 | |
9404978d | 1421 | static struct symtab * |
3624c875 | 1422 | read_ofile_symtab (objfile, sym_offset, sym_size, text_offset, text_size, |
2af231b8 | 1423 | section_offsets) |
7d9884b9 | 1424 | struct objfile *objfile; |
bd5635a1 RP |
1425 | int sym_offset; |
1426 | int sym_size; | |
1427 | CORE_ADDR text_offset; | |
1428 | int text_size; | |
2af231b8 | 1429 | struct section_offsets *section_offsets; |
bd5635a1 RP |
1430 | { |
1431 | register char *namestring; | |
7d9884b9 | 1432 | register struct internal_nlist *bufp; |
bd5635a1 | 1433 | unsigned char type; |
afe4ca15 | 1434 | unsigned max_symnum; |
7d9884b9 JG |
1435 | register bfd *abfd; |
1436 | ||
021959e2 | 1437 | current_objfile = objfile; |
bd5635a1 RP |
1438 | subfile_stack = 0; |
1439 | ||
7da1e27d SG |
1440 | #ifdef hp9000s800 |
1441 | stringtab_global = HP_STRINGTAB (objfile); | |
1442 | #else | |
3624c875 | 1443 | stringtab_global = DBX_STRINGTAB (objfile); |
7da1e27d | 1444 | #endif |
bd5635a1 RP |
1445 | last_source_file = 0; |
1446 | ||
7d9884b9 JG |
1447 | abfd = objfile->obfd; |
1448 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ | |
bd5635a1 RP |
1449 | symbuf_end = symbuf_idx = 0; |
1450 | ||
1451 | /* It is necessary to actually read one symbol *before* the start | |
1452 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
1453 | occurs before the N_SO symbol. | |
1454 | ||
1455 | Detecting this in read_dbx_symtab | |
1456 | would slow down initial readin, so we look for it here instead. */ | |
9342ecb9 | 1457 | if (!processing_acc_compilation && sym_offset >= (int)symbol_size) |
bd5635a1 | 1458 | { |
7d9884b9 JG |
1459 | bfd_seek (symfile_bfd, sym_offset - symbol_size, L_INCR); |
1460 | fill_symbuf (abfd); | |
bd5635a1 | 1461 | bufp = &symbuf[symbuf_idx++]; |
7d9884b9 | 1462 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 | 1463 | |
afe4ca15 | 1464 | SET_NAMESTRING (); |
bd5635a1 RP |
1465 | |
1466 | processing_gcc_compilation = | |
1467 | (bufp->n_type == N_TEXT | |
0cf9329b PB |
1468 | && (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0 |
1469 | || strcmp(namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0)); | |
bd5635a1 RP |
1470 | } |
1471 | else | |
1472 | { | |
1473 | /* The N_SO starting this symtab is the first symbol, so we | |
1474 | better not check the symbol before it. I'm not this can | |
1475 | happen, but it doesn't hurt to check for it. */ | |
7d9884b9 | 1476 | bfd_seek (symfile_bfd, sym_offset, L_INCR); |
bd5635a1 RP |
1477 | processing_gcc_compilation = 0; |
1478 | } | |
1479 | ||
1480 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1481 | fill_symbuf (abfd); |
bd5635a1 RP |
1482 | bufp = &symbuf[symbuf_idx]; |
1483 | if (bufp->n_type != (unsigned char)N_SO) | |
1484 | error("First symbol in segment of executable not a source symbol"); | |
1485 | ||
afe4ca15 JG |
1486 | max_symnum = sym_size / symbol_size; |
1487 | ||
bd5635a1 | 1488 | for (symnum = 0; |
afe4ca15 | 1489 | symnum < max_symnum; |
bd5635a1 RP |
1490 | symnum++) |
1491 | { | |
1492 | QUIT; /* Allow this to be interruptable */ | |
1493 | if (symbuf_idx == symbuf_end) | |
7d9884b9 | 1494 | fill_symbuf(abfd); |
bd5635a1 | 1495 | bufp = &symbuf[symbuf_idx++]; |
7d9884b9 | 1496 | SWAP_SYMBOL (bufp, abfd); |
bd5635a1 | 1497 | |
c0302457 | 1498 | type = bufp->n_type; |
bd5635a1 | 1499 | |
afe4ca15 | 1500 | SET_NAMESTRING (); |
bd5635a1 | 1501 | |
7d9884b9 | 1502 | if (type & N_STAB) { |
c55e6167 | 1503 | process_one_symbol (type, bufp->n_desc, bufp->n_value, |
2af231b8 | 1504 | namestring, section_offsets, objfile); |
7d9884b9 | 1505 | } |
bd5635a1 RP |
1506 | /* We skip checking for a new .o or -l file; that should never |
1507 | happen in this routine. */ | |
1508 | else if (type == N_TEXT | |
0cf9329b PB |
1509 | && (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0 |
1510 | || strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0)) | |
bd5635a1 RP |
1511 | /* I don't think this code will ever be executed, because |
1512 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
1513 | the N_SO symbol which starts this source file. | |
1514 | However, there is no reason not to accept | |
1515 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
1516 | processing_gcc_compilation = 1; | |
1517 | else if (type & N_EXT || type == (unsigned char)N_TEXT | |
1518 | || type == (unsigned char)N_NBTEXT | |
0c4d2cc2 | 1519 | ) { |
bd5635a1 RP |
1520 | /* Global symbol: see if we came across a dbx defintion for |
1521 | a corresponding symbol. If so, store the value. Remove | |
1522 | syms from the chain when their values are stored, but | |
1523 | search the whole chain, as there may be several syms from | |
1524 | different files with the same name. */ | |
1525 | /* This is probably not true. Since the files will be read | |
1526 | in one at a time, each reference to a global symbol will | |
1527 | be satisfied in each file as it appears. So we skip this | |
1528 | section. */ | |
1529 | ; | |
0c4d2cc2 | 1530 | } |
bd5635a1 | 1531 | } |
9404978d | 1532 | |
021959e2 | 1533 | current_objfile = NULL; |
9342ecb9 JG |
1534 | |
1535 | /* In a Solaris elf file, this variable, which comes from the | |
1536 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
1537 | which comes from pst->textlow is correct. */ | |
1538 | if (last_source_start_addr == 0) | |
1539 | last_source_start_addr = text_offset; | |
1540 | ||
1541 | return end_symtab (text_offset + text_size, 0, 0, objfile); | |
bd5635a1 | 1542 | } |
bd5635a1 | 1543 | \f |
c55e6167 JG |
1544 | /* This handles a single symbol from the symbol-file, building symbols |
1545 | into a GDB symtab. It takes these arguments and an implicit argument. | |
1546 | ||
1547 | TYPE is the type field of the ".stab" symbol entry. | |
1548 | DESC is the desc field of the ".stab" entry. | |
1549 | VALU is the value field of the ".stab" entry. | |
1550 | NAME is the symbol name, in our address space. | |
2af231b8 JG |
1551 | SECTION_OFFSETS is a set of amounts by which the sections of this object |
1552 | file were relocated when it was loaded into memory. | |
1553 | All symbols that refer | |
1554 | to memory locations need to be offset by these amounts. | |
9342ecb9 | 1555 | OBJFILE is the object file from which we are reading symbols. |
c55e6167 JG |
1556 | It is used in end_symtab. */ |
1557 | ||
7e258d18 | 1558 | void |
2af231b8 | 1559 | process_one_symbol (type, desc, valu, name, section_offsets, objfile) |
bd5635a1 RP |
1560 | int type, desc; |
1561 | CORE_ADDR valu; | |
1562 | char *name; | |
2af231b8 | 1563 | struct section_offsets *section_offsets; |
9342ecb9 | 1564 | struct objfile *objfile; |
bd5635a1 RP |
1565 | { |
1566 | #ifndef SUN_FIXED_LBRAC_BUG | |
0cf9329b | 1567 | /* This records the last pc address we've seen. We depend on there being |
bd5635a1 RP |
1568 | an SLINE or FUN or SO before the first LBRAC, since the variable does |
1569 | not get reset in between reads of different symbol files. */ | |
1570 | static CORE_ADDR last_pc_address; | |
1571 | #endif | |
1572 | register struct context_stack *new; | |
9342ecb9 JG |
1573 | /* This remembers the address of the start of a function. It is used |
1574 | because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries are | |
1575 | relative to the current function's start address. On systems | |
2af231b8 JG |
1576 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, and is |
1577 | used to relocate these symbol types rather than SECTION_OFFSETS. */ | |
9342ecb9 | 1578 | static CORE_ADDR function_start_offset; |
bd5635a1 RP |
1579 | char *colon_pos; |
1580 | ||
1581 | /* Something is wrong if we see real data before | |
1582 | seeing a source file name. */ | |
1583 | ||
1584 | if (last_source_file == 0 && type != (unsigned char)N_SO) | |
1585 | { | |
1586 | /* Currently this ignores N_ENTRY on Gould machines, N_NSYM on machines | |
1587 | where that code is defined. */ | |
1588 | if (IGNORE_SYMBOL (type)) | |
1589 | return; | |
1590 | ||
1591 | /* FIXME, this should not be an error, since it precludes extending | |
1592 | the symbol table information in this way... */ | |
1593 | error ("Invalid symbol data: does not start by identifying a source file."); | |
1594 | } | |
1595 | ||
1596 | switch (type) | |
1597 | { | |
1598 | case N_FUN: | |
1599 | case N_FNAME: | |
0bd83fd7 | 1600 | #if 0 |
3c03b5de SG |
1601 | /* It seems that the Sun ANSI C compiler (acc) replaces N_FUN with N_GSYM and |
1602 | N_STSYM with a type code of f or F. Can't enable this until we get some | |
4c7c6bab | 1603 | stuff straightened out with psymtabs. FIXME. */ |
0bd83fd7 | 1604 | |
3c03b5de SG |
1605 | case N_GSYM: |
1606 | case N_STSYM: | |
0bd83fd7 | 1607 | #endif /* 0 */ |
3c03b5de | 1608 | |
2af231b8 JG |
1609 | /* Relocate for dynamic loading */ |
1610 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c55e6167 | 1611 | |
bd5635a1 RP |
1612 | /* Either of these types of symbols indicates the start of |
1613 | a new function. We must process its "name" normally for dbx, | |
1614 | but also record the start of a new lexical context, and possibly | |
1615 | also the end of the lexical context for the previous function. */ | |
1616 | /* This is not always true. This type of symbol may indicate a | |
1617 | text segment variable. */ | |
1618 | ||
bd5635a1 RP |
1619 | colon_pos = strchr (name, ':'); |
1620 | if (!colon_pos++ | |
1621 | || (*colon_pos != 'f' && *colon_pos != 'F')) | |
1622 | { | |
9342ecb9 | 1623 | define_symbol (valu, name, desc, type, objfile); |
bd5635a1 RP |
1624 | break; |
1625 | } | |
1626 | ||
3c03b5de SG |
1627 | #ifndef SUN_FIXED_LBRAC_BUG |
1628 | last_pc_address = valu; /* Save for SunOS bug circumcision */ | |
1629 | #endif | |
1630 | ||
9342ecb9 JG |
1631 | #ifdef BLOCK_ADDRESS_FUNCTION_RELATIVE |
1632 | /* On Solaris 2.0 compilers, the block addresses and N_SLINE's | |
1633 | are relative to the start of the function. On normal systems, | |
1634 | and when using gcc on Solaris 2.0, these addresses are just | |
1635 | absolute, or relative to the N_SO, depending on | |
1636 | BLOCK_ADDRESS_ABSOLUTE. */ | |
8f86a4e4 | 1637 | function_start_offset = valu; |
9342ecb9 | 1638 | #else |
2af231b8 JG |
1639 | /* Default on ordinary systems */ |
1640 | function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
9342ecb9 JG |
1641 | #endif |
1642 | ||
bd5635a1 RP |
1643 | within_function = 1; |
1644 | if (context_stack_depth > 0) | |
1645 | { | |
7d9884b9 | 1646 | new = pop_context (); |
bd5635a1 RP |
1647 | /* Make a block for the local symbols within. */ |
1648 | finish_block (new->name, &local_symbols, new->old_blocks, | |
9342ecb9 | 1649 | new->start_addr, valu, objfile); |
bd5635a1 RP |
1650 | } |
1651 | /* Stack must be empty now. */ | |
1652 | if (context_stack_depth != 0) | |
021959e2 | 1653 | complain (&lbrac_unmatched_complaint, (char *) symnum); |
bd5635a1 | 1654 | |
7d9884b9 | 1655 | new = push_context (0, valu); |
9342ecb9 | 1656 | new->name = define_symbol (valu, name, desc, type, objfile); |
bd5635a1 RP |
1657 | break; |
1658 | ||
bd5635a1 RP |
1659 | case N_LBRAC: |
1660 | /* This "symbol" just indicates the start of an inner lexical | |
1661 | context within a function. */ | |
1662 | ||
9342ecb9 JG |
1663 | #if defined(BLOCK_ADDRESS_ABSOLUTE) || defined(BLOCK_ADDRESS_FUNCTION_RELATIVE) |
1664 | /* Relocate for dynamic loading and Sun ELF acc fn-relative syms. */ | |
1665 | valu += function_start_offset; | |
c55e6167 | 1666 | #else |
bd5635a1 RP |
1667 | /* On most machines, the block addresses are relative to the |
1668 | N_SO, the linker did not relocate them (sigh). */ | |
1669 | valu += last_source_start_addr; | |
1670 | #endif | |
1671 | ||
1672 | #ifndef SUN_FIXED_LBRAC_BUG | |
1673 | if (valu < last_pc_address) { | |
1674 | /* Patch current LBRAC pc value to match last handy pc value */ | |
1675 | complain (&lbrac_complaint, 0); | |
1676 | valu = last_pc_address; | |
1677 | } | |
1678 | #endif | |
7d9884b9 | 1679 | new = push_context (desc, valu); |
bd5635a1 RP |
1680 | break; |
1681 | ||
1682 | case N_RBRAC: | |
1683 | /* This "symbol" just indicates the end of an inner lexical | |
1684 | context that was started with N_LBRAC. */ | |
1685 | ||
9342ecb9 JG |
1686 | #if defined(BLOCK_ADDRESS_ABSOLUTE) || defined(BLOCK_ADDRESS_FUNCTION_RELATIVE) |
1687 | /* Relocate for dynamic loading and Sun ELF acc fn-relative syms. */ | |
1688 | valu += function_start_offset; | |
c55e6167 | 1689 | #else |
bd5635a1 RP |
1690 | /* On most machines, the block addresses are relative to the |
1691 | N_SO, the linker did not relocate them (sigh). */ | |
1692 | valu += last_source_start_addr; | |
1693 | #endif | |
1694 | ||
7d9884b9 | 1695 | new = pop_context(); |
bd5635a1 | 1696 | if (desc != new->depth) |
021959e2 | 1697 | complain (&lbrac_mismatch_complaint, (char *) symnum); |
bd5635a1 RP |
1698 | |
1699 | /* Some compilers put the variable decls inside of an | |
1700 | LBRAC/RBRAC block. This macro should be nonzero if this | |
1701 | is true. DESC is N_DESC from the N_RBRAC symbol. | |
0cf9329b PB |
1702 | GCC_P is true if we've detected the GCC_COMPILED_SYMBOL |
1703 | or the GCC2_COMPILED_SYMBOL. */ | |
bd5635a1 RP |
1704 | #if !defined (VARIABLES_INSIDE_BLOCK) |
1705 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 0 | |
1706 | #endif | |
1707 | ||
1708 | /* Can only use new->locals as local symbols here if we're in | |
1709 | gcc or on a machine that puts them before the lbrack. */ | |
1710 | if (!VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
1711 | local_symbols = new->locals; | |
1712 | ||
1713 | /* If this is not the outermost LBRAC...RBRAC pair in the | |
1714 | function, its local symbols preceded it, and are the ones | |
1715 | just recovered from the context stack. Defined the block for them. | |
1716 | ||
1717 | If this is the outermost LBRAC...RBRAC pair, there is no | |
1718 | need to do anything; leave the symbols that preceded it | |
1719 | to be attached to the function's own block. However, if | |
1720 | it is so, we need to indicate that we just moved outside | |
1721 | of the function. */ | |
1722 | if (local_symbols | |
1723 | && (context_stack_depth | |
1724 | > !VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation))) | |
1725 | { | |
1726 | /* FIXME Muzzle a compiler bug that makes end < start. */ | |
1727 | if (new->start_addr > valu) | |
1728 | { | |
1729 | complain(&lbrac_rbrac_complaint, 0); | |
1730 | new->start_addr = valu; | |
1731 | } | |
1732 | /* Make a block for the local symbols within. */ | |
1733 | finish_block (0, &local_symbols, new->old_blocks, | |
9342ecb9 | 1734 | new->start_addr, valu, objfile); |
bd5635a1 RP |
1735 | } |
1736 | else | |
1737 | { | |
1738 | within_function = 0; | |
1739 | } | |
1740 | if (VARIABLES_INSIDE_BLOCK(desc, processing_gcc_compilation)) | |
1741 | /* Now pop locals of block just finished. */ | |
1742 | local_symbols = new->locals; | |
1743 | break; | |
1744 | ||
9bb30452 | 1745 | case N_FN: |
6150cc73 | 1746 | case N_FN_SEQ: |
9bb30452 | 1747 | /* This kind of symbol indicates the start of an object file. */ |
2af231b8 JG |
1748 | /* Relocate for dynamic loading */ |
1749 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
bd5635a1 RP |
1750 | break; |
1751 | ||
1752 | case N_SO: | |
1753 | /* This type of symbol indicates the start of data | |
1754 | for one source file. | |
1755 | Finish the symbol table of the previous source file | |
1756 | (if any) and start accumulating a new symbol table. */ | |
2af231b8 JG |
1757 | /* Relocate for dynamic loading */ |
1758 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
c55e6167 | 1759 | |
bd5635a1 RP |
1760 | #ifndef SUN_FIXED_LBRAC_BUG |
1761 | last_pc_address = valu; /* Save for SunOS bug circumcision */ | |
1762 | #endif | |
1763 | ||
1764 | #ifdef PCC_SOL_BROKEN | |
1765 | /* pcc bug, occasionally puts out SO for SOL. */ | |
1766 | if (context_stack_depth > 0) | |
1767 | { | |
1768 | start_subfile (name, NULL); | |
1769 | break; | |
1770 | } | |
1771 | #endif | |
1772 | if (last_source_file) | |
7e258d18 PB |
1773 | { |
1774 | /* Check if previous symbol was also an N_SO (with some | |
1775 | sanity checks). If so, that one was actually the directory | |
1776 | name, and the current one is the real file name. | |
1777 | Patch things up. */ | |
c72af089 | 1778 | if (previous_stab_code == N_SO) |
7e258d18 | 1779 | { |
c72af089 SG |
1780 | if (current_subfile && current_subfile->dirname == NULL |
1781 | && current_subfile->name != NULL | |
1782 | && current_subfile->name[strlen(current_subfile->name)-1] == '/') | |
1783 | { | |
1784 | current_subfile->dirname = current_subfile->name; | |
1785 | current_subfile->name = | |
1786 | obsavestring (name, strlen (name), | |
1787 | &objfile -> symbol_obstack); | |
1788 | } | |
1789 | break; /* Ignore repeated SOs */ | |
7e258d18 | 1790 | } |
4ed3a9ea | 1791 | end_symtab (valu, 0, 0, objfile); |
7e258d18 | 1792 | } |
bd5635a1 RP |
1793 | start_symtab (name, NULL, valu); |
1794 | break; | |
1795 | ||
c55e6167 | 1796 | |
bd5635a1 RP |
1797 | case N_SOL: |
1798 | /* This type of symbol indicates the start of data for | |
1799 | a sub-source-file, one whose contents were copied or | |
1800 | included in the compilation of the main source file | |
1801 | (whose name was given in the N_SO symbol.) */ | |
2af231b8 JG |
1802 | /* Relocate for dynamic loading */ |
1803 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
784fd92b | 1804 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
1805 | break; |
1806 | ||
1807 | case N_BINCL: | |
1808 | push_subfile (); | |
1809 | add_new_header_file (name, valu); | |
784fd92b | 1810 | start_subfile (name, current_subfile->dirname); |
bd5635a1 RP |
1811 | break; |
1812 | ||
1813 | case N_EINCL: | |
784fd92b | 1814 | start_subfile (pop_subfile (), current_subfile->dirname); |
bd5635a1 RP |
1815 | break; |
1816 | ||
1817 | case N_EXCL: | |
1818 | add_old_header_file (name, valu); | |
1819 | break; | |
1820 | ||
1821 | case N_SLINE: | |
1822 | /* This type of "symbol" really just records | |
1823 | one line-number -- core-address correspondence. | |
1824 | Enter it in the line list for this symbol table. */ | |
9342ecb9 JG |
1825 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
1826 | valu += function_start_offset; | |
bd5635a1 RP |
1827 | #ifndef SUN_FIXED_LBRAC_BUG |
1828 | last_pc_address = valu; /* Save for SunOS bug circumcision */ | |
1829 | #endif | |
4137c5fc | 1830 | record_line (current_subfile, desc, valu); |
bd5635a1 RP |
1831 | break; |
1832 | ||
1833 | case N_BCOMM: | |
1834 | if (common_block) | |
1835 | error ("Invalid symbol data: common within common at symtab pos %d", | |
1836 | symnum); | |
1837 | common_block = local_symbols; | |
1838 | common_block_i = local_symbols ? local_symbols->nsyms : 0; | |
1839 | break; | |
1840 | ||
1841 | case N_ECOMM: | |
1842 | /* Symbols declared since the BCOMM are to have the common block | |
1843 | start address added in when we know it. common_block points to | |
1844 | the first symbol after the BCOMM in the local_symbols list; | |
1845 | copy the list and hang it off the symbol for the common block name | |
1846 | for later fixup. */ | |
1847 | { | |
1848 | int i; | |
1849 | struct symbol *sym = | |
9342ecb9 | 1850 | (struct symbol *) xmmalloc (objfile -> md, sizeof (struct symbol)); |
4ed3a9ea | 1851 | memset (sym, 0, sizeof *sym); |
bd5635a1 RP |
1852 | SYMBOL_NAME (sym) = savestring (name, strlen (name)); |
1853 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1854 | SYMBOL_NAMESPACE (sym) = (enum namespace)((long) | |
1855 | copy_pending (local_symbols, common_block_i, common_block)); | |
1856 | i = hashname (SYMBOL_NAME (sym)); | |
1857 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; | |
1858 | global_sym_chain[i] = sym; | |
1859 | common_block = 0; | |
1860 | break; | |
1861 | } | |
1862 | ||
2af231b8 JG |
1863 | /* The following symbol types need to have the appropriate offset added |
1864 | to their value; then we process symbol definitions in the name. */ | |
1865 | ||
1866 | case N_STSYM: /* Static symbol in data seg */ | |
1867 | case N_LCSYM: /* Static symbol in BSS seg */ | |
1868 | case N_ROSYM: /* Static symbol in Read-only data seg */ | |
1869 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. FIXME. | |
1870 | Solaris2's stabs-in-coff makes *most* symbols relative | |
1871 | but leaves a few absolute. N_STSYM and friends sit on the fence. | |
1872 | .stab "foo:S...",N_STSYM is absolute (ld relocates it) | |
1873 | .stab "foo:V...",N_STSYM is relative (section base subtracted). | |
1874 | This leaves us no choice but to search for the 'S' or 'V'... | |
1875 | (or pass the whole section_offsets stuff down ONE MORE function | |
1876 | call level, which we really don't want to do). */ | |
1877 | { | |
1878 | char *p; | |
1879 | p = strchr (name, ':'); | |
1880 | if (p != 0 && p[1] == 'S') | |
1881 | { | |
1882 | /* FIXME! We relocate it by the TEXT offset, in case the | |
1883 | whole module moved in memory. But this is wrong, since | |
1884 | the sections can side around independently. */ | |
1885 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1886 | goto define_a_symbol; | |
1887 | } | |
1888 | /* Since it's not the kludge case, re-dispatch to the right handler. */ | |
1889 | switch (type) { | |
1890 | case N_STSYM: goto case_N_STSYM; | |
1891 | case N_LCSYM: goto case_N_LCSYM; | |
1892 | case N_ROSYM: goto case_N_ROSYM; | |
1893 | default: abort(); | |
1894 | } | |
1895 | } | |
1896 | ||
1897 | case_N_STSYM: /* Static symbol in data seg */ | |
c55e6167 | 1898 | case N_DSLINE: /* Source line number, data seg */ |
2af231b8 JG |
1899 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA); |
1900 | goto define_a_symbol; | |
1901 | ||
1902 | case_N_LCSYM: /* Static symbol in BSS seg */ | |
c55e6167 JG |
1903 | case N_BSLINE: /* Source line number, bss seg */ |
1904 | /* N_BROWS: overlaps with N_BSLINE */ | |
2af231b8 JG |
1905 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS); |
1906 | goto define_a_symbol; | |
1907 | ||
1908 | case_N_ROSYM: /* Static symbol in Read-only data seg */ | |
1909 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA); | |
1910 | goto define_a_symbol; | |
1911 | ||
c55e6167 | 1912 | case N_ENTRY: /* Alternate entry point */ |
2af231b8 JG |
1913 | /* Relocate for dynamic loading */ |
1914 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); | |
1915 | goto define_a_symbol; | |
c55e6167 JG |
1916 | |
1917 | /* The following symbol types don't need the address field relocated, | |
1918 | since it is either unused, or is absolute. */ | |
2af231b8 | 1919 | define_a_symbol: |
c55e6167 JG |
1920 | case N_GSYM: /* Global variable */ |
1921 | case N_NSYMS: /* Number of symbols (ultrix) */ | |
1922 | case N_NOMAP: /* No map? (ultrix) */ | |
1923 | case N_RSYM: /* Register variable */ | |
1924 | case N_DEFD: /* Modula-2 GNU module dependency */ | |
1925 | case N_SSYM: /* Struct or union element */ | |
1926 | case N_LSYM: /* Local symbol in stack */ | |
1927 | case N_PSYM: /* Parameter variable */ | |
1928 | case N_LENG: /* Length of preceding symbol type */ | |
1929 | if (name) | |
9342ecb9 | 1930 | define_symbol (valu, name, desc, type, objfile); |
bd5635a1 RP |
1931 | break; |
1932 | ||
ec8ceca3 JG |
1933 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
1934 | for a bunch of other flags, too. Someday we may parse their | |
1935 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
1936 | case N_OPT: /* Solaris 2: Compiler options */ | |
1937 | if (name) | |
1938 | { | |
1939 | if (!strcmp (name, GCC2_COMPILED_FLAG_SYMBOL)) | |
1940 | processing_gcc_compilation = 1; | |
1941 | } | |
1942 | break; | |
1943 | ||
bcbf9559 JG |
1944 | /* The following symbol types can be ignored. */ |
1945 | case N_OBJ: /* Solaris 2: Object file dir and name */ | |
bcbf9559 JG |
1946 | /* N_UNDF: Solaris 2: file separator mark */ |
1947 | /* N_UNDF: -- we will never encounter it, since we only process one | |
1948 | file's symbols at once. */ | |
4c7c6bab JG |
1949 | case N_ENDM: /* Solaris 2: End of module */ |
1950 | case N_MAIN: /* Name of main routine. */ | |
9342ecb9 JG |
1951 | break; |
1952 | ||
c55e6167 JG |
1953 | /* The following symbol types we don't know how to process. Handle |
1954 | them in a "default" way, but complain to people who care. */ | |
bd5635a1 | 1955 | default: |
2af231b8 | 1956 | case N_CATCH: /* Exception handler catcher */ |
c55e6167 | 1957 | case N_EHDECL: /* Exception handler name */ |
c55e6167 JG |
1958 | case N_PC: /* Global symbol in Pascal */ |
1959 | case N_M2C: /* Modula-2 compilation unit */ | |
1960 | /* N_MOD2: overlaps with N_EHDECL */ | |
1961 | case N_SCOPE: /* Modula-2 scope information */ | |
1962 | case N_ECOML: /* End common (local name) */ | |
1963 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
1964 | case N_NBDATA: | |
1965 | case N_NBBSS: | |
1966 | case N_NBSTS: | |
1967 | case N_NBLCS: | |
1968 | complain (&unknown_symtype_complaint, local_hex_string(type)); | |
bd5635a1 | 1969 | if (name) |
9342ecb9 | 1970 | define_symbol (valu, name, desc, type, objfile); |
bd5635a1 | 1971 | } |
7e258d18 PB |
1972 | |
1973 | previous_stab_code = type; | |
bd5635a1 RP |
1974 | } |
1975 | \f | |
bd5635a1 RP |
1976 | /* Copy a pending list, used to record the contents of a common |
1977 | block for later fixup. */ | |
1978 | static struct pending * | |
1979 | copy_pending (beg, begi, end) | |
021959e2 | 1980 | struct pending *beg; |
bd5635a1 | 1981 | int begi; |
021959e2 | 1982 | struct pending *end; |
bd5635a1 RP |
1983 | { |
1984 | struct pending *new = 0; | |
1985 | struct pending *next; | |
1986 | ||
1987 | for (next = beg; next != 0 && (next != end || begi < end->nsyms); | |
1988 | next = next->next, begi = 0) | |
1989 | { | |
1990 | register int j; | |
1991 | for (j = begi; j < next->nsyms; j++) | |
1992 | add_symbol_to_list (next->symbol[j], &new); | |
1993 | } | |
1994 | return new; | |
1995 | } | |
bd5635a1 | 1996 | \f |
9342ecb9 JG |
1997 | /* Scan and build partial symbols for an ELF symbol file. |
1998 | This ELF file has already been processed to get its minimal symbols, | |
1999 | and any DWARF symbols that were in it. | |
2000 | ||
2001 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2002 | rolled into one. | |
2003 | ||
2004 | OBJFILE is the object file we are reading symbols from. | |
2005 | ADDR is the address relative to which the symbols are (e.g. | |
2006 | the base address of the text segment). | |
2007 | MAINLINE is true if we are reading the main symbol | |
2008 | table (as opposed to a shared lib or dynamically loaded file). | |
2009 | STABOFFSET and STABSIZE define the location in OBJFILE where the .stab | |
2010 | section exists. | |
2011 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
2012 | .stabstr section exists. | |
2013 | ||
2014 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
2015 | adjusted for elf details. */ | |
2016 | ||
2017 | void | |
2af231b8 | 2018 | DEFUN(elfstab_build_psymtabs, (objfile, section_offsets, mainline, |
9342ecb9 JG |
2019 | staboffset, stabsize, |
2020 | stabstroffset, stabstrsize), | |
2021 | struct objfile *objfile AND | |
2af231b8 | 2022 | struct section_offsets *section_offsets AND |
9342ecb9 JG |
2023 | int mainline AND |
2024 | unsigned int staboffset AND | |
2025 | unsigned int stabsize AND | |
2026 | unsigned int stabstroffset AND | |
2027 | unsigned int stabstrsize) | |
2028 | { | |
2029 | int val; | |
2030 | bfd *sym_bfd = objfile->obfd; | |
2031 | char *name = bfd_get_filename (sym_bfd); | |
2032 | struct dbx_symfile_info *info; | |
2033 | ||
2af231b8 JG |
2034 | /* There is already a dbx_symfile_info allocated by our caller. |
2035 | It might even contain some info from the ELF symtab to help us. */ | |
2036 | info = (struct dbx_symfile_info *) objfile->sym_private; | |
9342ecb9 JG |
2037 | |
2038 | DBX_TEXT_SECT (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
2039 | if (!DBX_TEXT_SECT (objfile)) | |
2040 | error ("Can't find .text section in symbol file"); | |
2041 | ||
2042 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
2043 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; | |
2044 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
2045 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; | |
2046 | DBX_SYMTAB_OFFSET (objfile) = staboffset; | |
2047 | ||
51b57ded | 2048 | if (stabstrsize < 0) /* FIXME: stabstrsize is unsigned; never true! */ |
9342ecb9 JG |
2049 | error ("ridiculous string table size: %d bytes", stabstrsize); |
2050 | DBX_STRINGTAB (objfile) = (char *) | |
2051 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize+1); | |
2052 | ||
2053 | /* Now read in the string table in one big gulp. */ | |
2054 | ||
2055 | val = bfd_seek (sym_bfd, stabstroffset, L_SET); | |
2056 | if (val < 0) | |
2057 | perror_with_name (name); | |
2058 | val = bfd_read (DBX_STRINGTAB (objfile), stabstrsize, 1, sym_bfd); | |
2059 | if (val != stabstrsize) | |
2060 | perror_with_name (name); | |
2061 | ||
2062 | buildsym_new_init (); | |
2063 | free_header_files (); | |
2064 | init_header_files (); | |
2065 | install_minimal_symbols (objfile); | |
2066 | ||
2067 | processing_acc_compilation = 1; | |
2068 | ||
2069 | /* In an elf file, we've already installed the minimal symbols that came | |
2070 | from the elf (non-stab) symbol table, so always act like an | |
2071 | incremental load here. */ | |
2af231b8 JG |
2072 | dbx_symfile_read (objfile, section_offsets, 0); |
2073 | } | |
2074 | \f | |
2075 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
2076 | of how to represent it for fast symbol reading. */ | |
2077 | ||
2078 | struct section_offsets * | |
2079 | dbx_symfile_offsets (objfile, addr) | |
2080 | struct objfile *objfile; | |
2081 | CORE_ADDR addr; | |
2082 | { | |
2083 | struct section_offsets *section_offsets; | |
2084 | int i; | |
2085 | ||
2086 | section_offsets = (struct section_offsets *) | |
2087 | obstack_alloc (&objfile -> psymbol_obstack, | |
2088 | sizeof (struct section_offsets) + | |
2089 | sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1)); | |
2090 | ||
2091 | for (i = 0; i < SECT_OFF_MAX; i++) | |
2092 | ANOFFSET (section_offsets, i) = addr; | |
2093 | ||
2094 | return section_offsets; | |
9342ecb9 JG |
2095 | } |
2096 | \f | |
bd5635a1 RP |
2097 | /* Register our willingness to decode symbols for SunOS and a.out and |
2098 | b.out files handled by BFD... */ | |
80d68b1d FF |
2099 | static struct sym_fns sunos_sym_fns = |
2100 | { | |
2101 | "sunOs", /* sym_name: name or name prefix of BFD target type */ | |
2102 | 6, /* 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 | 2110 | |
80d68b1d FF |
2111 | static struct sym_fns aout_sym_fns = |
2112 | { | |
2113 | "a.out", /* sym_name: name or name prefix of BFD target type */ | |
2114 | 5, /* sym_namelen: number of significant sym_name chars */ | |
2115 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ | |
2116 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2117 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2118 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2af231b8 | 2119 | dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
80d68b1d FF |
2120 | NULL /* next: pointer to next struct sym_fns */ |
2121 | }; | |
bd5635a1 | 2122 | |
80d68b1d FF |
2123 | static struct sym_fns bout_sym_fns = |
2124 | { | |
2125 | "b.out", /* sym_name: name or name prefix of BFD target type */ | |
2126 | 5, /* sym_namelen: number of significant sym_name chars */ | |
2127 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ | |
2128 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2129 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2130 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2af231b8 | 2131 | dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
80d68b1d FF |
2132 | NULL /* next: pointer to next struct sym_fns */ |
2133 | }; | |
bd5635a1 | 2134 | |
2af231b8 JG |
2135 | /* This is probably a mistake. FIXME. Why can't the HP's use an ordinary |
2136 | file format name with an -hppa suffix? */ | |
7da1e27d SG |
2137 | static struct sym_fns hppa_sym_fns = |
2138 | { | |
2139 | "hppa", /* sym_name: name or name prefix of BFD target type */ | |
2140 | 4, /* sym_namelen: number of significant sym_name chars */ | |
2141 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ | |
2142 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
2143 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
2144 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
2af231b8 | 2145 | dbx_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
7da1e27d SG |
2146 | NULL /* next: pointer to next struct sym_fns */ |
2147 | }; | |
2148 | ||
bd5635a1 RP |
2149 | void |
2150 | _initialize_dbxread () | |
2151 | { | |
2152 | add_symtab_fns(&sunos_sym_fns); | |
2153 | add_symtab_fns(&aout_sym_fns); | |
2154 | add_symtab_fns(&bout_sym_fns); | |
7da1e27d | 2155 | add_symtab_fns(&hppa_sym_fns); |
bd5635a1 | 2156 | } |