File: | src/gnu/usr.bin/binutils/gdb/dbxread.c |
Warning: | line 3334, column 3 Value stored to 'info' is never read |
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1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004. |
4 | Free Software Foundation, Inc. |
5 | |
6 | This file is part of GDB. |
7 | |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by |
10 | the Free Software Foundation; either version 2 of the License, or |
11 | (at your option) any later version. |
12 | |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | GNU General Public License for more details. |
17 | |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software |
20 | Foundation, Inc., 59 Temple Place - Suite 330, |
21 | Boston, MA 02111-1307, USA. */ |
22 | |
23 | /* This module provides three functions: dbx_symfile_init, |
24 | which initializes to read a symbol file; dbx_new_init, which |
25 | discards existing cached information when all symbols are being |
26 | discarded; and dbx_symfile_read, which reads a symbol table |
27 | from a file. |
28 | |
29 | dbx_symfile_read only does the minimum work necessary for letting the |
30 | user "name" things symbolically; it does not read the entire symtab. |
31 | Instead, it reads the external and static symbols and puts them in partial |
32 | symbol tables. When more extensive information is requested of a |
33 | file, the corresponding partial symbol table is mutated into a full |
34 | fledged symbol table by going back and reading the symbols |
35 | for real. dbx_psymtab_to_symtab() is the function that does this */ |
36 | |
37 | #include "defs.h" |
38 | #include "gdb_string.h" |
39 | |
40 | #if defined(__CYGNUSCLIB__) |
41 | #include <sys/types.h> |
42 | #include <fcntl.h> |
43 | #endif |
44 | |
45 | #include "gdb_obstack.h" |
46 | #include "gdb_stat.h" |
47 | #include "symtab.h" |
48 | #include "breakpoint.h" |
49 | #include "target.h" |
50 | #include "gdbcore.h" /* for bfd stuff */ |
51 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
52 | #include "objfiles.h" |
53 | #include "buildsym.h" |
54 | #include "stabsread.h" |
55 | #include "gdb-stabs.h" |
56 | #include "demangle.h" |
57 | #include "complaints.h" |
58 | #include "cp-abi.h" |
59 | #include "gdb_assert.h" |
60 | |
61 | #include "aout/aout64.h" |
62 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */ |
63 | |
64 | |
65 | /* We put a pointer to this structure in the read_symtab_private field |
66 | of the psymtab. */ |
67 | |
68 | struct symloc |
69 | { |
70 | /* Offset within the file symbol table of first local symbol for this |
71 | file. */ |
72 | |
73 | int ldsymoff; |
74 | |
75 | /* Length (in bytes) of the section of the symbol table devoted to |
76 | this file's symbols (actually, the section bracketed may contain |
77 | more than just this file's symbols). If ldsymlen is 0, the only |
78 | reason for this thing's existence is the dependency list. Nothing |
79 | else will happen when it is read in. */ |
80 | |
81 | int ldsymlen; |
82 | |
83 | /* The size of each symbol in the symbol file (in external form). */ |
84 | |
85 | int symbol_size; |
86 | |
87 | /* Further information needed to locate the symbols if they are in |
88 | an ELF file. */ |
89 | |
90 | int symbol_offset; |
91 | int string_offset; |
92 | int file_string_offset; |
93 | }; |
94 | |
95 | #define LDSYMOFF(p)(((struct symloc *)((p)->read_symtab_private))->ldsymoff ) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) |
96 | #define LDSYMLEN(p)(((struct symloc *)((p)->read_symtab_private))->ldsymlen ) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) |
97 | #define SYMLOC(p)((struct symloc *)((p)->read_symtab_private)) ((struct symloc *)((p)->read_symtab_private)) |
98 | #define SYMBOL_SIZE(p)(((struct symloc *)((p)->read_symtab_private))->symbol_size ) (SYMLOC(p)((struct symloc *)((p)->read_symtab_private))->symbol_size) |
99 | #define SYMBOL_OFFSET(p)(((struct symloc *)((p)->read_symtab_private))->symbol_offset ) (SYMLOC(p)((struct symloc *)((p)->read_symtab_private))->symbol_offset) |
100 | #define STRING_OFFSET(p)(((struct symloc *)((p)->read_symtab_private))->string_offset ) (SYMLOC(p)((struct symloc *)((p)->read_symtab_private))->string_offset) |
101 | #define FILE_STRING_OFFSET(p)(((struct symloc *)((p)->read_symtab_private))->file_string_offset ) (SYMLOC(p)((struct symloc *)((p)->read_symtab_private))->file_string_offset) |
102 | |
103 | |
104 | /* Remember what we deduced to be the source language of this psymtab. */ |
105 | |
106 | static enum language psymtab_language = language_unknown; |
107 | |
108 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
109 | |
110 | static bfd *symfile_bfd; |
111 | |
112 | /* The size of each symbol in the symbol file (in external form). |
113 | This is set by dbx_symfile_read when building psymtabs, and by |
114 | dbx_psymtab_to_symtab when building symtabs. */ |
115 | |
116 | static unsigned symbol_size; |
117 | |
118 | /* This is the offset of the symbol table in the executable file. */ |
119 | |
120 | static unsigned symbol_table_offset; |
121 | |
122 | /* This is the offset of the string table in the executable file. */ |
123 | |
124 | static unsigned string_table_offset; |
125 | |
126 | /* For elf+stab executables, the n_strx field is not a simple index |
127 | into the string table. Instead, each .o file has a base offset in |
128 | the string table, and the associated symbols contain offsets from |
129 | this base. The following two variables contain the base offset for |
130 | the current and next .o files. */ |
131 | |
132 | static unsigned int file_string_table_offset; |
133 | static unsigned int next_file_string_table_offset; |
134 | |
135 | /* .o and NLM files contain unrelocated addresses which are based at |
136 | 0. When non-zero, this flag disables some of the special cases for |
137 | Solaris elf+stab text addresses at location 0. */ |
138 | |
139 | static int symfile_relocatable = 0; |
140 | |
141 | /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are |
142 | relative to the function start address. */ |
143 | |
144 | static int block_address_function_relative = 0; |
145 | |
146 | /* The lowest text address we have yet encountered. This is needed |
147 | because in an a.out file, there is no header field which tells us |
148 | what address the program is actually going to be loaded at, so we |
149 | need to make guesses based on the symbols (which *are* relocated to |
150 | reflect the address it will be loaded at). */ |
151 | |
152 | static CORE_ADDR lowest_text_address; |
153 | |
154 | /* Non-zero if there is any line number info in the objfile. Prevents |
155 | end_psymtab from discarding an otherwise empty psymtab. */ |
156 | |
157 | static int has_line_numbers; |
158 | |
159 | /* Complaints about the symbols we have encountered. */ |
160 | |
161 | static void |
162 | unknown_symtype_complaint (const char *arg1) |
163 | { |
164 | complaint (&symfile_complaints, "unknown symbol type %s", arg1); |
165 | } |
166 | |
167 | static void |
168 | lbrac_mismatch_complaint (int arg1) |
169 | { |
170 | complaint (&symfile_complaints, |
171 | "N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", arg1); |
172 | } |
173 | |
174 | static void |
175 | repeated_header_complaint (const char *arg1, int arg2) |
176 | { |
177 | complaint (&symfile_complaints, |
178 | "\"repeated\" header file %s not previously seen, at symtab pos %d", |
179 | arg1, arg2); |
180 | } |
181 | |
182 | /* find_text_range --- find start and end of loadable code sections |
183 | |
184 | The find_text_range function finds the shortest address range that |
185 | encloses all sections containing executable code, and stores it in |
186 | objfile's text_addr and text_size members. |
187 | |
188 | dbx_symfile_read will use this to finish off the partial symbol |
189 | table, in some cases. */ |
190 | |
191 | static void |
192 | find_text_range (bfd * sym_bfd, struct objfile *objfile) |
193 | { |
194 | asection *sec; |
195 | int found_any = 0; |
196 | CORE_ADDR start = 0; |
197 | CORE_ADDR end = 0; |
198 | |
199 | for (sec = sym_bfd->sections; sec; sec = sec->next) |
200 | if (bfd_get_section_flags (sym_bfd, sec)((sec)->flags + 0) & SEC_CODE0x020) |
201 | { |
202 | CORE_ADDR sec_start = bfd_section_vma (sym_bfd, sec)((sec)->vma); |
203 | CORE_ADDR sec_end = sec_start + bfd_section_size (sym_bfd, sec)((sec)->_raw_size); |
204 | |
205 | if (found_any) |
206 | { |
207 | if (sec_start < start) |
208 | start = sec_start; |
209 | if (sec_end > end) |
210 | end = sec_end; |
211 | } |
212 | else |
213 | { |
214 | start = sec_start; |
215 | end = sec_end; |
216 | } |
217 | |
218 | found_any = 1; |
219 | } |
220 | |
221 | if (!found_any) |
222 | error ("Can't find any code sections in symbol file"); |
223 | |
224 | DBX_TEXT_ADDR (objfile)(((objfile)->sym_stab_info)->text_addr) = start; |
225 | DBX_TEXT_SIZE (objfile)(((objfile)->sym_stab_info)->text_size) = end - start; |
226 | } |
227 | |
228 | |
229 | |
230 | /* During initial symbol readin, we need to have a structure to keep |
231 | track of which psymtabs have which bincls in them. This structure |
232 | is used during readin to setup the list of dependencies within each |
233 | partial symbol table. */ |
234 | |
235 | struct header_file_location |
236 | { |
237 | char *name; /* Name of header file */ |
238 | int instance; /* See above */ |
239 | struct partial_symtab *pst; /* Partial symtab that has the |
240 | BINCL/EINCL defs for this file */ |
241 | }; |
242 | |
243 | /* The actual list and controling variables */ |
244 | static struct header_file_location *bincl_list, *next_bincl; |
245 | static int bincls_allocated; |
246 | |
247 | /* Local function prototypes */ |
248 | |
249 | extern void _initialize_dbxread (void); |
250 | |
251 | static void read_ofile_symtab (struct partial_symtab *); |
252 | |
253 | static void dbx_psymtab_to_symtab (struct partial_symtab *); |
254 | |
255 | static void dbx_psymtab_to_symtab_1 (struct partial_symtab *); |
256 | |
257 | static void read_dbx_dynamic_symtab (struct objfile *objfile); |
258 | |
259 | static void read_dbx_symtab (struct objfile *); |
260 | |
261 | static void free_bincl_list (struct objfile *); |
262 | |
263 | static struct partial_symtab *find_corresponding_bincl_psymtab (char *, int); |
264 | |
265 | static void add_bincl_to_list (struct partial_symtab *, char *, int); |
266 | |
267 | static void init_bincl_list (int, struct objfile *); |
268 | |
269 | static char *dbx_next_symbol_text (struct objfile *); |
270 | |
271 | static void fill_symbuf (bfd *); |
272 | |
273 | static void dbx_symfile_init (struct objfile *); |
274 | |
275 | static void dbx_new_init (struct objfile *); |
276 | |
277 | static void dbx_symfile_read (struct objfile *, int); |
278 | |
279 | static void dbx_symfile_finish (struct objfile *); |
280 | |
281 | static void record_minimal_symbol (char *, CORE_ADDR, int, struct objfile *); |
282 | |
283 | static void add_new_header_file (char *, int); |
284 | |
285 | static void add_old_header_file (char *, int); |
286 | |
287 | static void add_this_object_header_file (int); |
288 | |
289 | static struct partial_symtab *start_psymtab (struct objfile *, char *, |
290 | CORE_ADDR, int, |
291 | struct partial_symbol **, |
292 | struct partial_symbol **); |
293 | |
294 | /* Free up old header file tables */ |
295 | |
296 | void |
297 | free_header_files (void) |
298 | { |
299 | if (this_object_header_files) |
300 | { |
301 | xfree (this_object_header_files); |
302 | this_object_header_files = NULL((void*)0); |
303 | } |
304 | n_allocated_this_object_header_files = 0; |
305 | } |
306 | |
307 | /* Allocate new header file tables */ |
308 | |
309 | void |
310 | init_header_files (void) |
311 | { |
312 | n_allocated_this_object_header_files = 10; |
313 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); |
314 | } |
315 | |
316 | /* Add header file number I for this object file |
317 | at the next successive FILENUM. */ |
318 | |
319 | static void |
320 | add_this_object_header_file (int i) |
321 | { |
322 | if (n_this_object_header_files == n_allocated_this_object_header_files) |
323 | { |
324 | n_allocated_this_object_header_files *= 2; |
325 | this_object_header_files |
326 | = (int *) xrealloc ((char *) this_object_header_files, |
327 | n_allocated_this_object_header_files * sizeof (int)); |
328 | } |
329 | |
330 | this_object_header_files[n_this_object_header_files++] = i; |
331 | } |
332 | |
333 | /* Add to this file an "old" header file, one already seen in |
334 | a previous object file. NAME is the header file's name. |
335 | INSTANCE is its instance code, to select among multiple |
336 | symbol tables for the same header file. */ |
337 | |
338 | static void |
339 | add_old_header_file (char *name, int instance) |
340 | { |
341 | struct header_file *p = HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->header_files); |
342 | int i; |
343 | |
344 | for (i = 0; i < N_HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->n_header_files); i++) |
345 | if (strcmp (p[i].name, name) == 0 && instance == p[i].instance) |
346 | { |
347 | add_this_object_header_file (i); |
348 | return; |
349 | } |
350 | repeated_header_complaint (name, symnum); |
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 (char *name, int instance) |
366 | { |
367 | int i; |
368 | struct header_file *hfile; |
369 | |
370 | /* Make sure there is room for one more header file. */ |
371 | |
372 | i = N_ALLOCATED_HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->n_allocated_header_files ); |
373 | |
374 | if (N_HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->n_header_files) == i) |
375 | { |
376 | if (i == 0) |
377 | { |
378 | N_ALLOCATED_HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->n_allocated_header_files ) = 10; |
379 | HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->header_files) = (struct header_file *) |
380 | xmalloc (10 * sizeof (struct header_file)); |
381 | } |
382 | else |
383 | { |
384 | i *= 2; |
385 | N_ALLOCATED_HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->n_allocated_header_files ) = i; |
386 | HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->header_files) = (struct header_file *) |
387 | xrealloc ((char *) HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->header_files), |
388 | (i * sizeof (struct header_file))); |
389 | } |
390 | } |
391 | |
392 | /* Create an entry for this header file. */ |
393 | |
394 | i = N_HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->n_header_files)++; |
395 | hfile = HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->header_files) + i; |
396 | hfile->name = savestring (name, strlen (name)); |
397 | hfile->instance = instance; |
398 | hfile->length = 10; |
399 | hfile->vector |
400 | = (struct type **) xmalloc (10 * sizeof (struct type *)); |
401 | memset (hfile->vector, 0, 10 * sizeof (struct type *)); |
402 | |
403 | add_this_object_header_file (i); |
404 | } |
405 | |
406 | #if 0 |
407 | static struct type ** |
408 | explicit_lookup_type (int real_filenum, int index) |
409 | { |
410 | struct header_file *f = &HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->header_files)[real_filenum]; |
411 | |
412 | if (index >= f->length) |
413 | { |
414 | f->length *= 2; |
415 | f->vector = (struct type **) |
416 | xrealloc (f->vector, f->length * sizeof (struct type *)); |
417 | memset (&f->vector[f->length / 2], |
418 | '\0', f->length * sizeof (struct type *) / 2); |
419 | } |
420 | return &f->vector[index]; |
421 | } |
422 | #endif |
423 | |
424 | static void |
425 | record_minimal_symbol (char *name, CORE_ADDR address, int type, |
426 | struct objfile *objfile) |
427 | { |
428 | enum minimal_symbol_type ms_type; |
429 | int section; |
430 | asection *bfd_section; |
431 | |
432 | switch (type) |
433 | { |
434 | case N_TEXT4 | N_EXT1: |
435 | ms_type = mst_text; |
436 | section = SECT_OFF_TEXT (objfile)((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 436, "sect_index_text not initialized"), -1) : objfile-> sect_index_text); |
437 | bfd_section = DBX_TEXT_SECTION (objfile)(((objfile)->sym_stab_info)->text_section); |
438 | break; |
439 | case N_DATA6 | N_EXT1: |
440 | ms_type = mst_data; |
441 | section = SECT_OFF_DATA (objfile)((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 441, "sect_index_data not initialized"), -1) : objfile-> sect_index_data); |
442 | bfd_section = DBX_DATA_SECTION (objfile)(((objfile)->sym_stab_info)->data_section); |
443 | break; |
444 | case N_BSS8 | N_EXT1: |
445 | ms_type = mst_bss; |
446 | section = SECT_OFF_BSS (objfile)(objfile)->sect_index_bss; |
447 | bfd_section = DBX_BSS_SECTION (objfile)(((objfile)->sym_stab_info)->bss_section); |
448 | break; |
449 | case N_ABS2 | N_EXT1: |
450 | ms_type = mst_abs; |
451 | section = -1; |
452 | bfd_section = NULL((void*)0); |
453 | break; |
454 | #ifdef N_SETV0x1C |
455 | case N_SETV0x1C | N_EXT1: |
456 | ms_type = mst_data; |
457 | section = SECT_OFF_DATA (objfile)((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 457, "sect_index_data not initialized"), -1) : objfile-> sect_index_data); |
458 | bfd_section = DBX_DATA_SECTION (objfile)(((objfile)->sym_stab_info)->data_section); |
459 | break; |
460 | case N_SETV0x1C: |
461 | /* I don't think this type actually exists; since a N_SETV is the result |
462 | of going over many .o files, it doesn't make sense to have one |
463 | file local. */ |
464 | ms_type = mst_file_data; |
465 | section = SECT_OFF_DATA (objfile)((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 465, "sect_index_data not initialized"), -1) : objfile-> sect_index_data); |
466 | bfd_section = DBX_DATA_SECTION (objfile)(((objfile)->sym_stab_info)->data_section); |
467 | break; |
468 | #endif |
469 | case N_TEXT4: |
470 | case N_NBTEXT: |
471 | case N_FN0x1f: |
472 | case N_FN_SEQ0x0C: |
473 | ms_type = mst_file_text; |
474 | section = SECT_OFF_TEXT (objfile)((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 474, "sect_index_text not initialized"), -1) : objfile-> sect_index_text); |
475 | bfd_section = DBX_TEXT_SECTION (objfile)(((objfile)->sym_stab_info)->text_section); |
476 | break; |
477 | case N_DATA6: |
478 | ms_type = mst_file_data; |
479 | |
480 | /* Check for __DYNAMIC, which is used by Sun shared libraries. |
481 | Record it as global even if it's local, not global, so |
482 | lookup_minimal_symbol can find it. We don't check symbol_leading_char |
483 | because for SunOS4 it always is '_'. */ |
484 | if (name[8] == 'C' && DEPRECATED_STREQ ("__DYNAMIC", name)(strcmp (("__DYNAMIC"), (name)) == 0)) |
485 | ms_type = mst_data; |
486 | |
487 | /* Same with virtual function tables, both global and static. */ |
488 | { |
489 | char *tempstring = name; |
490 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)((objfile->obfd)->xvec->symbol_leading_char)) |
491 | ++tempstring; |
492 | if (is_vtable_name (tempstring)) |
493 | ms_type = mst_data; |
494 | } |
495 | section = SECT_OFF_DATA (objfile)((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 495, "sect_index_data not initialized"), -1) : objfile-> sect_index_data); |
496 | bfd_section = DBX_DATA_SECTION (objfile)(((objfile)->sym_stab_info)->data_section); |
497 | break; |
498 | case N_BSS8: |
499 | ms_type = mst_file_bss; |
500 | section = SECT_OFF_BSS (objfile)(objfile)->sect_index_bss; |
501 | bfd_section = DBX_BSS_SECTION (objfile)(((objfile)->sym_stab_info)->bss_section); |
502 | break; |
503 | default: |
504 | ms_type = mst_unknown; |
505 | section = -1; |
506 | bfd_section = NULL((void*)0); |
507 | break; |
508 | } |
509 | |
510 | if ((ms_type == mst_file_text || ms_type == mst_text) |
511 | && address < lowest_text_address) |
512 | lowest_text_address = address; |
513 | |
514 | prim_record_minimal_symbol_and_info |
515 | (name, address, ms_type, NULL((void*)0), section, bfd_section, objfile); |
516 | } |
517 | |
518 | /* Scan and build partial symbols for a symbol file. |
519 | We have been initialized by a call to dbx_symfile_init, which |
520 | put all the relevant info into a "struct dbx_symfile_info", |
521 | hung off the objfile structure. |
522 | |
523 | MAINLINE is true if we are reading the main symbol |
524 | table (as opposed to a shared lib or dynamically loaded file). */ |
525 | |
526 | static void |
527 | dbx_symfile_read (struct objfile *objfile, int mainline) |
528 | { |
529 | bfd *sym_bfd; |
530 | int val; |
531 | struct cleanup *back_to; |
532 | |
533 | sym_bfd = objfile->obfd; |
534 | |
535 | /* .o and .nlm files are relocatables with text, data and bss segs based at |
536 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for |
537 | symbols with a value of 0. */ |
538 | |
539 | symfile_relocatable = bfd_get_file_flags (sym_bfd)((sym_bfd)->flags) & HAS_RELOC0x01; |
540 | |
541 | /* This is true for Solaris (and all other systems which put stabs |
542 | in sections, hopefully, since it would be silly to do things |
543 | differently from Solaris), and false for SunOS4 and other a.out |
544 | file formats. */ |
545 | block_address_function_relative = |
546 | ((0 == strncmp (bfd_get_target (sym_bfd)((sym_bfd)->xvec->name), "elf", 3)) |
547 | || (0 == strncmp (bfd_get_target (sym_bfd)((sym_bfd)->xvec->name), "som", 3)) |
548 | || (0 == strncmp (bfd_get_target (sym_bfd)((sym_bfd)->xvec->name), "coff", 4)) |
549 | || (0 == strncmp (bfd_get_target (sym_bfd)((sym_bfd)->xvec->name), "pe", 2)) |
550 | || (0 == strncmp (bfd_get_target (sym_bfd)((sym_bfd)->xvec->name), "epoc-pe", 7)) |
551 | || (0 == strncmp (bfd_get_target (sym_bfd)((sym_bfd)->xvec->name), "nlm", 3))); |
552 | |
553 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset), SEEK_SET0); |
554 | if (val < 0) |
555 | perror_with_name (objfile->name); |
556 | |
557 | /* If we are reinitializing, or if we have never loaded syms yet, init */ |
558 | if (mainline |
559 | || (objfile->global_psymbols.size == 0 |
560 | && objfile->static_psymbols.size == 0)) |
561 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount)); |
562 | |
563 | symbol_size = DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size); |
564 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset); |
565 | |
566 | free_pending_blocks (); |
567 | back_to = make_cleanup (really_free_pendings, 0); |
568 | |
569 | init_minimal_symbol_collection (); |
570 | make_cleanup_discard_minimal_symbols (); |
571 | |
572 | /* Read stabs data from executable file and define symbols. */ |
573 | |
574 | read_dbx_symtab (objfile); |
575 | |
576 | /* Add the dynamic symbols. */ |
577 | |
578 | read_dbx_dynamic_symtab (objfile); |
579 | |
580 | /* Install any minimal symbols that have been collected as the current |
581 | minimal symbols for this objfile. */ |
582 | |
583 | install_minimal_symbols (objfile); |
584 | |
585 | do_cleanups (back_to); |
586 | } |
587 | |
588 | /* Initialize anything that needs initializing when a completely new |
589 | symbol file is specified (not just adding some symbols from another |
590 | file, e.g. a shared library). */ |
591 | |
592 | static void |
593 | dbx_new_init (struct objfile *ignore) |
594 | { |
595 | stabsread_new_init (); |
596 | buildsym_new_init (); |
597 | init_header_files (); |
598 | } |
599 | |
600 | |
601 | /* dbx_symfile_init () |
602 | is the dbx-specific initialization routine for reading symbols. |
603 | It is passed a struct objfile which contains, among other things, |
604 | the BFD for the file whose symbols are being read, and a slot for a pointer |
605 | to "private data" which we fill with goodies. |
606 | |
607 | We read the string table into malloc'd space and stash a pointer to it. |
608 | |
609 | Since BFD doesn't know how to read debug symbols in a format-independent |
610 | way (and may never do so...), we have to do it ourselves. We will never |
611 | be called unless this is an a.out (or very similar) file. |
612 | FIXME, there should be a cleaner peephole into the BFD environment here. */ |
613 | |
614 | #define DBX_STRINGTAB_SIZE_SIZEsizeof(long) sizeof(long) /* FIXME */ |
615 | |
616 | static void |
617 | dbx_symfile_init (struct objfile *objfile) |
618 | { |
619 | int val; |
620 | bfd *sym_bfd = objfile->obfd; |
621 | char *name = bfd_get_filename (sym_bfd)((char *) (sym_bfd)->filename); |
622 | asection *text_sect; |
623 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZEsizeof(long)]; |
624 | |
625 | /* Allocate struct to keep track of the symfile */ |
626 | objfile->sym_stab_info = (struct dbx_symfile_info *) |
627 | xmalloc (sizeof (struct dbx_symfile_info)); |
628 | memset (objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); |
629 | |
630 | DBX_TEXT_SECTION (objfile)(((objfile)->sym_stab_info)->text_section) = bfd_get_section_by_name (sym_bfd, ".text"); |
631 | DBX_DATA_SECTION (objfile)(((objfile)->sym_stab_info)->data_section) = bfd_get_section_by_name (sym_bfd, ".data"); |
632 | DBX_BSS_SECTION (objfile)(((objfile)->sym_stab_info)->bss_section) = bfd_get_section_by_name (sym_bfd, ".bss"); |
633 | |
634 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
635 | #define STRING_TABLE_OFFSET(sym_bfd->origin + (((sym_bfd)->tdata.aout_data->a). str_filepos)) (sym_bfd->origin + obj_str_filepos (sym_bfd)(((sym_bfd)->tdata.aout_data->a).str_filepos)) |
636 | #define SYMBOL_TABLE_OFFSET(sym_bfd->origin + (((sym_bfd)->tdata.aout_data->a). sym_filepos)) (sym_bfd->origin + obj_sym_filepos (sym_bfd)(((sym_bfd)->tdata.aout_data->a).sym_filepos)) |
637 | |
638 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
639 | |
640 | DBX_SYMFILE_INFO (objfile)((objfile)->sym_stab_info)->stab_section_info = NULL((void*)0); |
641 | |
642 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
643 | if (!text_sect) |
644 | error ("Can't find .text section in symbol file"); |
645 | DBX_TEXT_ADDR (objfile)(((objfile)->sym_stab_info)->text_addr) = bfd_section_vma (sym_bfd, text_sect)((text_sect)->vma); |
646 | DBX_TEXT_SIZE (objfile)(((objfile)->sym_stab_info)->text_size) = bfd_section_size (sym_bfd, text_sect)((text_sect)->_raw_size); |
647 | |
648 | DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size) = obj_symbol_entry_size (sym_bfd)(((sym_bfd)->tdata.aout_data->a).symbol_entry_size); |
649 | DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount) = bfd_get_symcount (sym_bfd)((sym_bfd)->symcount); |
650 | DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset) = SYMBOL_TABLE_OFFSET(sym_bfd->origin + (((sym_bfd)->tdata.aout_data->a). sym_filepos)); |
651 | |
652 | /* Read the string table and stash it away in the objfile_obstack. |
653 | When we blow away the objfile the string table goes away as well. |
654 | Note that gdb used to use the results of attempting to malloc the |
655 | string table, based on the size it read, as a form of sanity check |
656 | for botched byte swapping, on the theory that a byte swapped string |
657 | table size would be so totally bogus that the malloc would fail. Now |
658 | that we put in on the objfile_obstack, we can't do this since gdb gets |
659 | a fatal error (out of virtual memory) if the size is bogus. We can |
660 | however at least check to see if the size is less than the size of |
661 | the size field itself, or larger than the size of the entire file. |
662 | Note that all valid string tables have a size greater than zero, since |
663 | the bytes used to hold the size are included in the count. */ |
664 | |
665 | if (STRING_TABLE_OFFSET(sym_bfd->origin + (((sym_bfd)->tdata.aout_data->a). str_filepos)) == 0) |
666 | { |
667 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET |
668 | will never be zero, even when there is no string table. This |
669 | would appear to be a bug in bfd. */ |
670 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) = 0; |
671 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab) = NULL((void*)0); |
672 | } |
673 | else |
674 | { |
675 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET(sym_bfd->origin + (((sym_bfd)->tdata.aout_data->a). str_filepos)), SEEK_SET0); |
676 | if (val < 0) |
677 | perror_with_name (name); |
678 | |
679 | memset (size_temp, 0, sizeof (size_temp)); |
680 | val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd); |
681 | if (val < 0) |
682 | { |
683 | perror_with_name (name); |
684 | } |
685 | else if (val == 0) |
686 | { |
687 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to |
688 | EOF if there is no string table, and attempting to read the size |
689 | from EOF will read zero bytes. */ |
690 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) = 0; |
691 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab) = NULL((void*)0); |
692 | } |
693 | else |
694 | { |
695 | /* Read some data that would appear to be the string table size. |
696 | If there really is a string table, then it is probably the right |
697 | size. Byteswap if necessary and validate the size. Note that |
698 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some |
699 | random data that happened to be at STRING_TABLE_OFFSET, because |
700 | bfd can't tell us there is no string table, the sanity checks may |
701 | or may not catch this. */ |
702 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) = bfd_h_get_32 (sym_bfd, size_temp)((*((sym_bfd)->xvec->bfd_h_getx32)) (size_temp)); |
703 | |
704 | if (DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) < sizeof (size_temp) |
705 | || DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) > bfd_get_size (sym_bfd)) |
706 | error ("ridiculous string table size (%d bytes).", |
707 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size)); |
708 | |
709 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab) = |
710 | (char *) obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( ((((objfile)->sym_stab_info)->stringtab_size))); if (__o ->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }) ; __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); }) |
711 | DBX_STRINGTAB_SIZE (objfile))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( ((((objfile)->sym_stab_info)->stringtab_size))); if (__o ->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }) ; __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); }); |
712 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile))(objfile -> stats.sz_strtab += (((objfile)->sym_stab_info )->stringtab_size)); |
713 | |
714 | /* Now read in the string table in one big gulp. */ |
715 | |
716 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET(sym_bfd->origin + (((sym_bfd)->tdata.aout_data->a). str_filepos)), SEEK_SET0); |
717 | if (val < 0) |
718 | perror_with_name (name); |
719 | val = bfd_bread (DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab), |
720 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size), |
721 | sym_bfd); |
722 | if (val != DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size)) |
723 | perror_with_name (name); |
724 | } |
725 | } |
726 | } |
727 | |
728 | /* Perform any local cleanups required when we are done with a particular |
729 | objfile. I.E, we are in the process of discarding all symbol information |
730 | for an objfile, freeing up all memory held for it, and unlinking the |
731 | objfile struct from the global list of known objfiles. */ |
732 | |
733 | static void |
734 | dbx_symfile_finish (struct objfile *objfile) |
735 | { |
736 | if (objfile->sym_stab_info != NULL((void*)0)) |
737 | { |
738 | if (HEADER_FILES (objfile)(((objfile)->sym_stab_info)->header_files) != NULL((void*)0)) |
739 | { |
740 | int i = N_HEADER_FILES (objfile)(((objfile)->sym_stab_info)->n_header_files); |
741 | struct header_file *hfiles = HEADER_FILES (objfile)(((objfile)->sym_stab_info)->header_files); |
742 | |
743 | while (--i >= 0) |
744 | { |
745 | xfree (hfiles[i].name); |
746 | xfree (hfiles[i].vector); |
747 | } |
748 | xfree (hfiles); |
749 | } |
750 | xfree (objfile->sym_stab_info); |
751 | } |
752 | free_header_files (); |
753 | } |
754 | |
755 | |
756 | /* Buffer for reading the symbol table entries. */ |
757 | static struct external_nlist symbuf[4096]; |
758 | static int symbuf_idx; |
759 | static int symbuf_end; |
760 | |
761 | /* Name of last function encountered. Used in Solaris to approximate |
762 | object file boundaries. */ |
763 | static char *last_function_name; |
764 | |
765 | /* The address in memory of the string table of the object file we are |
766 | reading (which might not be the "main" object file, but might be a |
767 | shared library or some other dynamically loaded thing). This is |
768 | set by read_dbx_symtab when building psymtabs, and by |
769 | read_ofile_symtab when building symtabs, and is used only by |
770 | next_symbol_text. FIXME: If that is true, we don't need it when |
771 | building psymtabs, right? */ |
772 | static char *stringtab_global; |
773 | |
774 | /* These variables are used to control fill_symbuf when the stabs |
775 | symbols are not contiguous (as may be the case when a COFF file is |
776 | linked using --split-by-reloc). */ |
777 | static struct stab_section_list *symbuf_sections; |
778 | static unsigned int symbuf_left; |
779 | static unsigned int symbuf_read; |
780 | |
781 | /* This variable stores a global stabs buffer, if we read stabs into |
782 | memory in one chunk in order to process relocations. */ |
783 | static bfd_byte *stabs_data; |
784 | |
785 | /* Refill the symbol table input buffer |
786 | and set the variables that control fetching entries from it. |
787 | Reports an error if no data available. |
788 | This function can read past the end of the symbol table |
789 | (into the string table) but this does no harm. */ |
790 | |
791 | static void |
792 | fill_symbuf (bfd *sym_bfd) |
793 | { |
794 | unsigned int count; |
795 | int nbytes; |
796 | |
797 | if (stabs_data) |
798 | { |
799 | nbytes = sizeof (symbuf); |
800 | if (nbytes > symbuf_left) |
801 | nbytes = symbuf_left; |
802 | memcpy (symbuf, stabs_data + symbuf_read, nbytes); |
803 | } |
804 | else if (symbuf_sections == NULL((void*)0)) |
805 | { |
806 | count = sizeof (symbuf); |
807 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
808 | } |
809 | else |
810 | { |
811 | if (symbuf_left <= 0) |
812 | { |
813 | file_ptr filepos = symbuf_sections->section->filepos; |
814 | if (bfd_seek (sym_bfd, filepos, SEEK_SET0) != 0) |
815 | perror_with_name (bfd_get_filename (sym_bfd)((char *) (sym_bfd)->filename)); |
816 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section)((symbuf_sections->section)->_raw_size); |
817 | symbol_table_offset = filepos - symbuf_read; |
818 | symbuf_sections = symbuf_sections->next; |
819 | } |
820 | |
821 | count = symbuf_left; |
822 | if (count > sizeof (symbuf)) |
823 | count = sizeof (symbuf); |
824 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
825 | } |
826 | |
827 | if (nbytes < 0) |
828 | perror_with_name (bfd_get_filename (sym_bfd)((char *) (sym_bfd)->filename)); |
829 | else if (nbytes == 0) |
830 | error ("Premature end of file reading symbol table"); |
831 | symbuf_end = nbytes / symbol_size; |
832 | symbuf_idx = 0; |
833 | symbuf_left -= nbytes; |
834 | symbuf_read += nbytes; |
835 | } |
836 | |
837 | static void |
838 | stabs_seek (int sym_offset) |
839 | { |
840 | if (stabs_data) |
841 | { |
842 | symbuf_read += sym_offset; |
843 | symbuf_left -= sym_offset; |
844 | } |
845 | else |
846 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR1); |
847 | } |
848 | |
849 | #define INTERNALIZE_SYMBOL(intern, extern, abfd){ (intern).n_type = (*(unsigned char *) ((extern)->e_type) & 0xff); (intern).n_strx = ((*((abfd)->xvec->bfd_h_getx32 )) ((extern)->e_strx)); (intern).n_desc = ((*((abfd)->xvec ->bfd_h_getx16)) ((extern)->e_desc)); if (bfd_get_sign_extend_vma (abfd)) (intern).n_value = ((*((abfd)->xvec->bfd_h_getx_signed_32 )) ((extern)->e_value)); else (intern).n_value = ((*((abfd )->xvec->bfd_h_getx32)) ((extern)->e_value)); } \ |
850 | { \ |
851 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type)(*(unsigned char *) ((extern)->e_type) & 0xff); \ |
852 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx)((*((abfd)->xvec->bfd_h_getx32)) ((extern)->e_strx)); \ |
853 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc)((*((abfd)->xvec->bfd_h_getx16)) ((extern)->e_desc)); \ |
854 | if (bfd_get_sign_extend_vma (abfd)) \ |
855 | (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value)((*((abfd)->xvec->bfd_h_getx_signed_32)) ((extern)-> e_value)); \ |
856 | else \ |
857 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value)((*((abfd)->xvec->bfd_h_getx32)) ((extern)->e_value) ); \ |
858 | } |
859 | |
860 | /* Invariant: The symbol pointed to by symbuf_idx is the first one |
861 | that hasn't been swapped. Swap the symbol at the same time |
862 | that symbuf_idx is incremented. */ |
863 | |
864 | /* dbx allows the text of a symbol name to be continued into the |
865 | next symbol name! When such a continuation is encountered |
866 | (a \ at the end of the text of a name) |
867 | call this function to get the continuation. */ |
868 | |
869 | static char * |
870 | dbx_next_symbol_text (struct objfile *objfile) |
871 | { |
872 | struct internal_nlist nlist; |
873 | |
874 | if (symbuf_idx == symbuf_end) |
875 | fill_symbuf (symfile_bfd); |
876 | |
877 | symnum++; |
878 | INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], symfile_bfd){ (nlist).n_type = (*(unsigned char *) ((&symbuf[symbuf_idx ])->e_type) & 0xff); (nlist).n_strx = ((*((symfile_bfd )->xvec->bfd_h_getx32)) ((&symbuf[symbuf_idx])-> e_strx)); (nlist).n_desc = ((*((symfile_bfd)->xvec->bfd_h_getx16 )) ((&symbuf[symbuf_idx])->e_desc)); if (bfd_get_sign_extend_vma (symfile_bfd)) (nlist).n_value = ((*((symfile_bfd)->xvec-> bfd_h_getx_signed_32)) ((&symbuf[symbuf_idx])->e_value )); else (nlist).n_value = ((*((symfile_bfd)->xvec->bfd_h_getx32 )) ((&symbuf[symbuf_idx])->e_value)); }; |
879 | OBJSTAT (objfile, n_stabs++)(objfile -> stats.n_stabs++); |
880 | |
881 | symbuf_idx++; |
882 | |
883 | return nlist.n_strx + stringtab_global + file_string_table_offset; |
884 | } |
885 | |
886 | /* Initialize the list of bincls to contain none and have some |
887 | allocated. */ |
888 | |
889 | static void |
890 | init_bincl_list (int number, struct objfile *objfile) |
891 | { |
892 | bincls_allocated = number; |
893 | next_bincl = bincl_list = (struct header_file_location *) |
894 | xmalloc (bincls_allocated * sizeof (struct header_file_location)); |
895 | } |
896 | |
897 | /* Add a bincl to the list. */ |
898 | |
899 | static void |
900 | add_bincl_to_list (struct partial_symtab *pst, char *name, int instance) |
901 | { |
902 | if (next_bincl >= bincl_list + bincls_allocated) |
903 | { |
904 | int offset = next_bincl - bincl_list; |
905 | bincls_allocated *= 2; |
906 | bincl_list = (struct header_file_location *) |
907 | xrealloc ((char *) bincl_list, |
908 | bincls_allocated * sizeof (struct header_file_location)); |
909 | next_bincl = bincl_list + offset; |
910 | } |
911 | next_bincl->pst = pst; |
912 | next_bincl->instance = instance; |
913 | next_bincl++->name = name; |
914 | } |
915 | |
916 | /* Given a name, value pair, find the corresponding |
917 | bincl in the list. Return the partial symtab associated |
918 | with that header_file_location. */ |
919 | |
920 | static struct partial_symtab * |
921 | find_corresponding_bincl_psymtab (char *name, int instance) |
922 | { |
923 | struct header_file_location *bincl; |
924 | |
925 | for (bincl = bincl_list; bincl < next_bincl; bincl++) |
926 | if (bincl->instance == instance |
927 | && strcmp (name, bincl->name) == 0) |
928 | return bincl->pst; |
929 | |
930 | repeated_header_complaint (name, symnum); |
931 | return (struct partial_symtab *) 0; |
932 | } |
933 | |
934 | /* Free the storage allocated for the bincl list. */ |
935 | |
936 | static void |
937 | free_bincl_list (struct objfile *objfile) |
938 | { |
939 | xfree (bincl_list); |
940 | bincls_allocated = 0; |
941 | } |
942 | |
943 | static void |
944 | do_free_bincl_list_cleanup (void *objfile) |
945 | { |
946 | free_bincl_list (objfile); |
947 | } |
948 | |
949 | static struct cleanup * |
950 | make_cleanup_free_bincl_list (struct objfile *objfile) |
951 | { |
952 | return make_cleanup (do_free_bincl_list_cleanup, objfile); |
953 | } |
954 | |
955 | /* Set namestring based on nlist. If the string table index is invalid, |
956 | give a fake name, and print a single error message per symbol file read, |
957 | rather than abort the symbol reading or flood the user with messages. */ |
958 | |
959 | static char * |
960 | set_namestring (struct objfile *objfile, struct internal_nlist nlist) |
961 | { |
962 | char *namestring; |
963 | |
964 | if (((unsigned) nlist.n_strx + file_string_table_offset) >= |
965 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size)) |
966 | { |
967 | complaint (&symfile_complaints, "bad string table offset in symbol %d", |
968 | symnum); |
969 | namestring = "<bad string table offset>"; |
970 | } |
971 | else |
972 | namestring = nlist.n_strx + file_string_table_offset + |
973 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab); |
974 | return namestring; |
975 | } |
976 | |
977 | /* Scan a SunOs dynamic symbol table for symbols of interest and |
978 | add them to the minimal symbol table. */ |
979 | |
980 | static void |
981 | read_dbx_dynamic_symtab (struct objfile *objfile) |
982 | { |
983 | bfd *abfd = objfile->obfd; |
984 | struct cleanup *back_to; |
985 | int counter; |
986 | long dynsym_size; |
987 | long dynsym_count; |
988 | asymbol **dynsyms; |
989 | asymbol **symptr; |
990 | arelent **relptr; |
991 | long dynrel_size; |
992 | long dynrel_count; |
993 | arelent **dynrels; |
994 | CORE_ADDR sym_value; |
995 | char *name; |
996 | |
997 | /* Check that the symbol file has dynamic symbols that we know about. |
998 | bfd_arch_unknown can happen if we are reading a sun3 symbol file |
999 | on a sun4 host (and vice versa) and bfd is not configured |
1000 | --with-target=all. This would trigger an assertion in bfd/sunos.c, |
1001 | so we ignore the dynamic symbols in this case. */ |
1002 | if (bfd_get_flavour (abfd)((abfd)->xvec->flavour) != bfd_target_aout_flavour |
1003 | || (bfd_get_file_flags (abfd)((abfd)->flags) & DYNAMIC0x40) == 0 |
1004 | || bfd_get_arch (abfd) == bfd_arch_unknown) |
1005 | return; |
1006 | |
1007 | dynsym_size = bfd_get_dynamic_symtab_upper_bound (abfd)((*((abfd)->xvec->_bfd_get_dynamic_symtab_upper_bound)) (abfd)); |
1008 | if (dynsym_size < 0) |
1009 | return; |
1010 | |
1011 | dynsyms = (asymbol **) xmalloc (dynsym_size); |
1012 | back_to = make_cleanup (xfree, dynsyms); |
1013 | |
1014 | dynsym_count = bfd_canonicalize_dynamic_symtab (abfd, dynsyms)((*((abfd)->xvec->_bfd_canonicalize_dynamic_symtab)) (abfd , dynsyms)); |
1015 | if (dynsym_count < 0) |
1016 | { |
1017 | do_cleanups (back_to); |
1018 | return; |
1019 | } |
1020 | |
1021 | /* Enter dynamic symbols into the minimal symbol table |
1022 | if this is a stripped executable. */ |
1023 | if (bfd_get_symcount (abfd)((abfd)->symcount) <= 0) |
1024 | { |
1025 | symptr = dynsyms; |
1026 | for (counter = 0; counter < dynsym_count; counter++, symptr++) |
1027 | { |
1028 | asymbol *sym = *symptr; |
1029 | asection *sec; |
1030 | int type; |
1031 | |
1032 | sec = bfd_get_section (sym)((sym)->section); |
1033 | |
1034 | /* BFD symbols are section relative. */ |
1035 | sym_value = sym->value + sec->vma; |
1036 | |
1037 | if (bfd_get_section_flags (abfd, sec)((sec)->flags + 0) & SEC_CODE0x020) |
1038 | { |
1039 | sym_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1039, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1039, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1039, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
1040 | type = N_TEXT4; |
1041 | } |
1042 | else if (bfd_get_section_flags (abfd, sec)((sec)->flags + 0) & SEC_DATA0x040) |
1043 | { |
1044 | sym_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile))((((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1044, "sect_index_data not initialized"), -1) : objfile-> sect_index_data) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1044, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_data == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1044, "sect_index_data not initialized"), -1) : objfile-> sect_index_data)]); |
1045 | type = N_DATA6; |
1046 | } |
1047 | else if (bfd_get_section_flags (abfd, sec)((sec)->flags + 0) & SEC_ALLOC0x001) |
1048 | { |
1049 | sym_value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile))(((objfile)->sect_index_bss == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1049, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[(objfile)->sect_index_bss]); |
1050 | type = N_BSS8; |
1051 | } |
1052 | else |
1053 | continue; |
1054 | |
1055 | if (sym->flags & BSF_GLOBAL0x02) |
1056 | type |= N_EXT1; |
1057 | |
1058 | record_minimal_symbol ((char *) bfd_asymbol_name (sym)((sym)->name), sym_value, |
1059 | type, objfile); |
1060 | } |
1061 | } |
1062 | |
1063 | /* Symbols from shared libraries have a dynamic relocation entry |
1064 | that points to the associated slot in the procedure linkage table. |
1065 | We make a mininal symbol table entry with type mst_solib_trampoline |
1066 | at the address in the procedure linkage table. */ |
1067 | dynrel_size = bfd_get_dynamic_reloc_upper_bound (abfd)((*((abfd)->xvec->_bfd_get_dynamic_reloc_upper_bound)) ( abfd)); |
1068 | if (dynrel_size < 0) |
1069 | { |
1070 | do_cleanups (back_to); |
1071 | return; |
1072 | } |
1073 | |
1074 | dynrels = (arelent **) xmalloc (dynrel_size); |
1075 | make_cleanup (xfree, dynrels); |
1076 | |
1077 | dynrel_count = bfd_canonicalize_dynamic_reloc (abfd, dynrels, dynsyms)((*((abfd)->xvec->_bfd_canonicalize_dynamic_reloc)) (abfd , dynrels, dynsyms)); |
1078 | if (dynrel_count < 0) |
1079 | { |
1080 | do_cleanups (back_to); |
1081 | return; |
1082 | } |
1083 | |
1084 | for (counter = 0, relptr = dynrels; |
1085 | counter < dynrel_count; |
1086 | counter++, relptr++) |
1087 | { |
1088 | arelent *rel = *relptr; |
1089 | CORE_ADDR address = |
1090 | rel->address + ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile))((((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1090, "sect_index_data not initialized"), -1) : objfile-> sect_index_data) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1090, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_data == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1090, "sect_index_data not initialized"), -1) : objfile-> sect_index_data)]); |
1091 | |
1092 | switch (bfd_get_arch (abfd)) |
1093 | { |
1094 | case bfd_arch_sparc: |
1095 | if (rel->howto->type != RELOC_JMP_SLOT) |
1096 | continue; |
1097 | break; |
1098 | case bfd_arch_m68k: |
1099 | /* `16' is the type BFD produces for a jump table relocation. */ |
1100 | if (rel->howto->type != 16) |
1101 | continue; |
1102 | |
1103 | /* Adjust address in the jump table to point to |
1104 | the start of the bsr instruction. */ |
1105 | address -= 2; |
1106 | break; |
1107 | default: |
1108 | continue; |
1109 | } |
1110 | |
1111 | name = (char *) bfd_asymbol_name (*rel->sym_ptr_ptr)((*rel->sym_ptr_ptr)->name); |
1112 | prim_record_minimal_symbol (name, address, mst_solib_trampoline, |
1113 | objfile); |
1114 | } |
1115 | |
1116 | do_cleanups (back_to); |
1117 | } |
1118 | |
1119 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
1120 | static CORE_ADDR |
1121 | find_stab_function_addr (char *namestring, char *filename, |
1122 | struct objfile *objfile) |
1123 | { |
1124 | struct minimal_symbol *msym; |
1125 | char *p; |
1126 | int n; |
1127 | |
1128 | p = strchr (namestring, ':'); |
1129 | if (p == NULL((void*)0)) |
1130 | p = namestring; |
1131 | n = p - namestring; |
1132 | p = alloca (n + 2)__builtin_alloca(n + 2); |
1133 | strncpy (p, namestring, n); |
1134 | p[n] = 0; |
1135 | |
1136 | msym = lookup_minimal_symbol (p, filename, objfile); |
1137 | if (msym == NULL((void*)0)) |
1138 | { |
1139 | /* Sun Fortran appends an underscore to the minimal symbol name, |
1140 | try again with an appended underscore if the minimal symbol |
1141 | was not found. */ |
1142 | p[n] = '_'; |
1143 | p[n + 1] = 0; |
1144 | msym = lookup_minimal_symbol (p, filename, objfile); |
1145 | } |
1146 | |
1147 | if (msym == NULL((void*)0) && filename != NULL((void*)0)) |
1148 | { |
1149 | /* Try again without the filename. */ |
1150 | p[n] = 0; |
1151 | msym = lookup_minimal_symbol (p, NULL((void*)0), objfile); |
1152 | } |
1153 | if (msym == NULL((void*)0) && filename != NULL((void*)0)) |
1154 | { |
1155 | /* And try again for Sun Fortran, but without the filename. */ |
1156 | p[n] = '_'; |
1157 | p[n + 1] = 0; |
1158 | msym = lookup_minimal_symbol (p, NULL((void*)0), objfile); |
1159 | } |
1160 | |
1161 | return msym == NULL((void*)0) ? 0 : SYMBOL_VALUE_ADDRESS (msym)(msym)->ginfo.value.address; |
1162 | } |
1163 | #endif /* SOFUN_ADDRESS_MAYBE_MISSING */ |
1164 | |
1165 | static void |
1166 | function_outside_compilation_unit_complaint (const char *arg1) |
1167 | { |
1168 | complaint (&symfile_complaints, |
1169 | "function `%s' appears to be defined outside of all compilation units", |
1170 | arg1); |
1171 | } |
1172 | |
1173 | /* Setup partial_symtab's describing each source file for which |
1174 | debugging information is available. */ |
1175 | |
1176 | static void |
1177 | read_dbx_symtab (struct objfile *objfile) |
1178 | { |
1179 | struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
1180 | struct internal_nlist nlist; |
1181 | CORE_ADDR text_addr; |
1182 | int text_size; |
1183 | |
1184 | char *namestring; |
1185 | int nsl; |
1186 | int past_first_source_file = 0; |
1187 | CORE_ADDR last_o_file_start = 0; |
1188 | CORE_ADDR last_function_start = 0; |
1189 | struct cleanup *back_to; |
1190 | bfd *abfd; |
1191 | int textlow_not_set; |
1192 | int data_sect_index; |
1193 | |
1194 | /* Current partial symtab */ |
1195 | struct partial_symtab *pst; |
1196 | |
1197 | /* List of current psymtab's include files */ |
1198 | char **psymtab_include_list; |
1199 | int includes_allocated; |
1200 | int includes_used; |
1201 | |
1202 | /* Index within current psymtab dependency list */ |
1203 | struct partial_symtab **dependency_list; |
1204 | int dependencies_used, dependencies_allocated; |
1205 | |
1206 | text_addr = DBX_TEXT_ADDR (objfile)(((objfile)->sym_stab_info)->text_addr); |
1207 | text_size = DBX_TEXT_SIZE (objfile)(((objfile)->sym_stab_info)->text_size); |
1208 | |
1209 | /* FIXME. We probably want to change stringtab_global rather than add this |
1210 | while processing every symbol entry. FIXME. */ |
1211 | file_string_table_offset = 0; |
1212 | next_file_string_table_offset = 0; |
1213 | |
1214 | stringtab_global = DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab); |
1215 | |
1216 | pst = (struct partial_symtab *) 0; |
1217 | |
1218 | includes_allocated = 30; |
1219 | includes_used = 0; |
1220 | psymtab_include_list = (char **) alloca (includes_allocated *__builtin_alloca(includes_allocated * sizeof (char *)) |
1221 | sizeof (char *))__builtin_alloca(includes_allocated * sizeof (char *)); |
1222 | |
1223 | dependencies_allocated = 30; |
1224 | dependencies_used = 0; |
1225 | dependency_list = |
1226 | (struct partial_symtab **) alloca (dependencies_allocated *__builtin_alloca(dependencies_allocated * sizeof (struct partial_symtab *)) |
1227 | sizeof (struct partial_symtab *))__builtin_alloca(dependencies_allocated * sizeof (struct partial_symtab *)); |
1228 | |
1229 | /* Init bincl list */ |
1230 | init_bincl_list (20, objfile); |
1231 | back_to = make_cleanup_free_bincl_list (objfile); |
1232 | |
1233 | last_source_file = NULL((void*)0); |
1234 | |
1235 | lowest_text_address = (CORE_ADDR) -1; |
1236 | |
1237 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ |
1238 | abfd = objfile->obfd; |
1239 | symbuf_end = symbuf_idx = 0; |
1240 | next_symbol_text_func = dbx_next_symbol_text; |
1241 | textlow_not_set = 1; |
1242 | has_line_numbers = 0; |
1243 | |
1244 | /* FIXME: jimb/2003-09-12: We don't apply the right section's offset |
1245 | to global and static variables. The stab for a global or static |
1246 | variable doesn't give us any indication of which section it's in, |
1247 | so we can't tell immediately which offset in |
1248 | objfile->section_offsets we should apply to the variable's |
1249 | address. |
1250 | |
1251 | We could certainly find out which section contains the variable |
1252 | by looking up the variable's unrelocated address with |
1253 | find_pc_section, but that would be expensive; this is the |
1254 | function that constructs the partial symbol tables by examining |
1255 | every symbol in the entire executable, and it's |
1256 | performance-critical. So that expense would not be welcome. I'm |
1257 | not sure what to do about this at the moment. |
1258 | |
1259 | What we have done for years is to simply assume that the .data |
1260 | section's offset is appropriate for all global and static |
1261 | variables. Recently, this was expanded to fall back to the .bss |
1262 | section's offset if there is no .data section, and then to the |
1263 | .rodata section's offset. */ |
1264 | data_sect_index = objfile->sect_index_data; |
1265 | if (data_sect_index == -1) |
1266 | data_sect_index = SECT_OFF_BSS (objfile)(objfile)->sect_index_bss; |
1267 | if (data_sect_index == -1) |
1268 | data_sect_index = SECT_OFF_RODATA (objfile)((objfile->sect_index_rodata == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1268, "sect_index_rodata not initialized"), -1) : objfile-> sect_index_rodata); |
1269 | |
1270 | /* If data_sect_index is still -1, that's okay. It's perfectly fine |
1271 | for the file to have no .data, no .bss, and no .text at all, if |
1272 | it also has no global or static variables. If it does, we will |
1273 | get an internal error from an ANOFFSET macro below when we try to |
1274 | use data_sect_index. */ |
1275 | |
1276 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount); symnum++) |
1277 | { |
1278 | /* Get the symbol for this run and pull out some info */ |
1279 | QUIT{ if (quit_flag) quit (); if (deprecated_interactive_hook) deprecated_interactive_hook (); }; /* allow this to be interruptable */ |
1280 | if (symbuf_idx == symbuf_end) |
1281 | fill_symbuf (abfd); |
1282 | bufp = &symbuf[symbuf_idx++]; |
1283 | |
1284 | /* |
1285 | * Special case to speed up readin. |
1286 | */ |
1287 | if (bfd_h_get_8 (abfd, bufp->e_type)(*(unsigned char *) (bufp->e_type) & 0xff) == N_SLINE) |
1288 | { |
1289 | has_line_numbers = 1; |
1290 | continue; |
1291 | } |
1292 | |
1293 | INTERNALIZE_SYMBOL (nlist, bufp, abfd){ (nlist).n_type = (*(unsigned char *) ((bufp)->e_type) & 0xff); (nlist).n_strx = ((*((abfd)->xvec->bfd_h_getx32 )) ((bufp)->e_strx)); (nlist).n_desc = ((*((abfd)->xvec ->bfd_h_getx16)) ((bufp)->e_desc)); if (bfd_get_sign_extend_vma (abfd)) (nlist).n_value = ((*((abfd)->xvec->bfd_h_getx_signed_32 )) ((bufp)->e_value)); else (nlist).n_value = ((*((abfd)-> xvec->bfd_h_getx32)) ((bufp)->e_value)); }; |
1294 | OBJSTAT (objfile, n_stabs++)(objfile -> stats.n_stabs++); |
1295 | |
1296 | /* Ok. There is a lot of code duplicated in the rest of this |
1297 | switch statement (for efficiency reasons). Since I don't |
1298 | like duplicating code, I will do my penance here, and |
1299 | describe the code which is duplicated: |
1300 | |
1301 | *) The assignment to namestring. |
1302 | *) The call to strchr. |
1303 | *) The addition of a partial symbol the the two partial |
1304 | symbol lists. This last is a large section of code, so |
1305 | I've imbedded it in the following macro. |
1306 | */ |
1307 | |
1308 | switch (nlist.n_type) |
1309 | { |
1310 | char *p; |
1311 | /* |
1312 | * Standard, external, non-debugger, symbols |
1313 | */ |
1314 | |
1315 | case N_TEXT4 | N_EXT1: |
1316 | case N_NBTEXT | N_EXT1: |
1317 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1317, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1317, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1317, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
1318 | goto record_it; |
1319 | |
1320 | case N_DATA6 | N_EXT1: |
1321 | case N_NBDATA | N_EXT1: |
1322 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile))((((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1322, "sect_index_data not initialized"), -1) : objfile-> sect_index_data) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1322, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_data == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1322, "sect_index_data not initialized"), -1) : objfile-> sect_index_data)]); |
1323 | goto record_it; |
1324 | |
1325 | case N_BSS8: |
1326 | case N_BSS8 | N_EXT1: |
1327 | case N_NBBSS | N_EXT1: |
1328 | case N_SETV0x1C | N_EXT1: /* FIXME, is this in BSS? */ |
1329 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile))(((objfile)->sect_index_bss == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1329, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[(objfile)->sect_index_bss]); |
1330 | goto record_it; |
1331 | |
1332 | case N_ABS2 | N_EXT1: |
1333 | record_it: |
1334 | namestring = set_namestring (objfile, nlist); |
1335 | |
1336 | bss_ext_symbol: |
1337 | record_minimal_symbol (namestring, nlist.n_value, |
1338 | nlist.n_type, objfile); /* Always */ |
1339 | continue; |
1340 | |
1341 | /* Standard, local, non-debugger, symbols */ |
1342 | |
1343 | case N_NBTEXT: |
1344 | |
1345 | /* We need to be able to deal with both N_FN or N_TEXT, |
1346 | because we have no way of knowing whether the sys-supplied ld |
1347 | or GNU ld was used to make the executable. Sequents throw |
1348 | in another wrinkle -- they renumbered N_FN. */ |
1349 | |
1350 | case N_FN0x1f: |
1351 | case N_FN_SEQ0x0C: |
1352 | case N_TEXT4: |
1353 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1353, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1353, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1353, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
1354 | namestring = set_namestring (objfile, nlist); |
1355 | |
1356 | if ((namestring[0] == '-' && namestring[1] == 'l') |
1357 | || (namestring[(nsl = strlen (namestring)) - 1] == 'o' |
1358 | && namestring[nsl - 2] == '.')) |
1359 | { |
1360 | if (past_first_source_file && pst |
1361 | /* The gould NP1 uses low values for .o and -l symbols |
1362 | which are not the address. */ |
1363 | && nlist.n_value >= pst->textlow) |
1364 | { |
1365 | end_psymtab (pst, psymtab_include_list, includes_used, |
1366 | symnum * symbol_size, |
1367 | nlist.n_value > pst->texthigh |
1368 | ? nlist.n_value : pst->texthigh, |
1369 | dependency_list, dependencies_used, textlow_not_set); |
1370 | pst = (struct partial_symtab *) 0; |
1371 | includes_used = 0; |
1372 | dependencies_used = 0; |
1373 | } |
1374 | else |
1375 | past_first_source_file = 1; |
1376 | last_o_file_start = nlist.n_value; |
1377 | } |
1378 | else |
1379 | goto record_it; |
1380 | continue; |
1381 | |
1382 | case N_DATA6: |
1383 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile))((((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1383, "sect_index_data not initialized"), -1) : objfile-> sect_index_data) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1383, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_data == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1383, "sect_index_data not initialized"), -1) : objfile-> sect_index_data)]); |
1384 | goto record_it; |
1385 | |
1386 | case N_UNDF0 | N_EXT1: |
1387 | if (nlist.n_value != 0) |
1388 | { |
1389 | /* This is a "Fortran COMMON" symbol. See if the target |
1390 | environment knows where it has been relocated to. */ |
1391 | |
1392 | CORE_ADDR reladdr; |
1393 | |
1394 | namestring = set_namestring (objfile, nlist); |
1395 | if (target_lookup_symbol (namestring, &reladdr)(*current_target.to_lookup_symbol) (namestring, &reladdr)) |
1396 | { |
1397 | continue; /* Error in lookup; ignore symbol for now. */ |
1398 | } |
1399 | nlist.n_type ^= (N_BSS8 ^ N_UNDF0); /* Define it as a bss-symbol */ |
1400 | nlist.n_value = reladdr; |
1401 | goto bss_ext_symbol; |
1402 | } |
1403 | continue; /* Just undefined, not COMMON */ |
1404 | |
1405 | case N_UNDF0: |
1406 | if (processing_acc_compilation && nlist.n_strx == 1) |
1407 | { |
1408 | /* Deal with relative offsets in the string table |
1409 | used in ELF+STAB under Solaris. If we want to use the |
1410 | n_strx field, which contains the name of the file, |
1411 | we must adjust file_string_table_offset *before* calling |
1412 | set_namestring(). */ |
1413 | past_first_source_file = 1; |
1414 | file_string_table_offset = next_file_string_table_offset; |
1415 | next_file_string_table_offset = |
1416 | file_string_table_offset + nlist.n_value; |
1417 | if (next_file_string_table_offset < file_string_table_offset) |
1418 | error ("string table offset backs up at %d", symnum); |
1419 | /* FIXME -- replace error() with complaint. */ |
1420 | continue; |
1421 | } |
1422 | continue; |
1423 | |
1424 | /* Lots of symbol types we can just ignore. */ |
1425 | |
1426 | case N_ABS2: |
1427 | case N_NBDATA: |
1428 | case N_NBBSS: |
1429 | continue; |
1430 | |
1431 | /* Keep going . . . */ |
1432 | |
1433 | /* |
1434 | * Special symbol types for GNU |
1435 | */ |
1436 | case N_INDR0x0a: |
1437 | case N_INDR0x0a | N_EXT1: |
1438 | case N_SETA0x14: |
1439 | case N_SETA0x14 | N_EXT1: |
1440 | case N_SETT0x16: |
1441 | case N_SETT0x16 | N_EXT1: |
1442 | case N_SETD0x18: |
1443 | case N_SETD0x18 | N_EXT1: |
1444 | case N_SETB0x1A: |
1445 | case N_SETB0x1A | N_EXT1: |
1446 | case N_SETV0x1C: |
1447 | continue; |
1448 | |
1449 | /* |
1450 | * Debugger symbols |
1451 | */ |
1452 | |
1453 | case N_SO: |
1454 | { |
1455 | CORE_ADDR valu; |
1456 | static int prev_so_symnum = -10; |
1457 | static int first_so_symnum; |
1458 | char *p; |
1459 | static char *dirname_nso; |
1460 | int prev_textlow_not_set; |
1461 | |
1462 | valu = nlist.n_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1462, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1462, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1462, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
1463 | |
1464 | prev_textlow_not_set = textlow_not_set; |
1465 | |
1466 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
1467 | /* A zero value is probably an indication for the SunPRO 3.0 |
1468 | compiler. end_psymtab explicitly tests for zero, so |
1469 | don't relocate it. */ |
1470 | |
1471 | if (nlist.n_value == 0) |
1472 | { |
1473 | textlow_not_set = 1; |
1474 | valu = 0; |
1475 | } |
1476 | else |
1477 | textlow_not_set = 0; |
1478 | #else |
1479 | textlow_not_set = 0; |
1480 | #endif |
1481 | past_first_source_file = 1; |
1482 | |
1483 | if (prev_so_symnum != symnum - 1) |
1484 | { /* Here if prev stab wasn't N_SO */ |
1485 | first_so_symnum = symnum; |
1486 | |
1487 | if (pst) |
1488 | { |
1489 | end_psymtab (pst, psymtab_include_list, includes_used, |
1490 | symnum * symbol_size, |
1491 | valu > pst->texthigh ? valu : pst->texthigh, |
1492 | dependency_list, dependencies_used, |
1493 | prev_textlow_not_set); |
1494 | pst = (struct partial_symtab *) 0; |
1495 | includes_used = 0; |
1496 | dependencies_used = 0; |
1497 | } |
1498 | } |
1499 | |
1500 | prev_so_symnum = symnum; |
1501 | |
1502 | /* End the current partial symtab and start a new one */ |
1503 | |
1504 | namestring = set_namestring (objfile, nlist); |
1505 | |
1506 | /* Null name means end of .o file. Don't start a new one. */ |
1507 | if (*namestring == '\000') |
1508 | continue; |
1509 | |
1510 | /* Some compilers (including gcc) emit a pair of initial N_SOs. |
1511 | The first one is a directory name; the second the file name. |
1512 | If pst exists, is empty, and has a filename ending in '/', |
1513 | we assume the previous N_SO was a directory name. */ |
1514 | |
1515 | p = strrchr (namestring, '/'); |
1516 | if (p && *(p + 1) == '\000') |
1517 | { |
1518 | /* Save the directory name SOs locally, then save it into |
1519 | the psymtab when it's created below. */ |
1520 | dirname_nso = namestring; |
1521 | continue; |
1522 | } |
1523 | |
1524 | /* Some other compilers (C++ ones in particular) emit useless |
1525 | SOs for non-existant .c files. We ignore all subsequent SOs that |
1526 | immediately follow the first. */ |
1527 | |
1528 | if (!pst) |
1529 | { |
1530 | pst = start_psymtab (objfile, |
1531 | namestring, valu, |
1532 | first_so_symnum * symbol_size, |
1533 | objfile->global_psymbols.next, |
1534 | objfile->static_psymbols.next); |
1535 | pst->dirname = dirname_nso; |
1536 | dirname_nso = NULL((void*)0); |
1537 | } |
1538 | continue; |
1539 | } |
1540 | |
1541 | case N_BINCL: |
1542 | { |
1543 | enum language tmp_language; |
1544 | /* Add this bincl to the bincl_list for future EXCLs. No |
1545 | need to save the string; it'll be around until |
1546 | read_dbx_symtab function returns */ |
1547 | |
1548 | namestring = set_namestring (objfile, nlist); |
1549 | tmp_language = deduce_language_from_filename (namestring); |
1550 | |
1551 | /* Only change the psymtab's language if we've learned |
1552 | something useful (eg. tmp_language is not language_unknown). |
1553 | In addition, to match what start_subfile does, never change |
1554 | from C++ to C. */ |
1555 | if (tmp_language != language_unknown |
1556 | && (tmp_language != language_c |
1557 | || psymtab_language != language_cplus)) |
1558 | psymtab_language = tmp_language; |
1559 | |
1560 | if (pst == NULL((void*)0)) |
1561 | { |
1562 | /* FIXME: we should not get here without a PST to work on. |
1563 | Attempt to recover. */ |
1564 | complaint (&symfile_complaints, |
1565 | "N_BINCL %s not in entries for any file, at symtab pos %d", |
1566 | namestring, symnum); |
1567 | continue; |
1568 | } |
1569 | add_bincl_to_list (pst, namestring, nlist.n_value); |
1570 | |
1571 | /* Mark down an include file in the current psymtab */ |
1572 | |
1573 | goto record_include_file; |
1574 | } |
1575 | |
1576 | case N_SOL: |
1577 | { |
1578 | enum language tmp_language; |
1579 | /* Mark down an include file in the current psymtab */ |
1580 | |
1581 | namestring = set_namestring (objfile, nlist); |
1582 | tmp_language = deduce_language_from_filename (namestring); |
1583 | |
1584 | /* Only change the psymtab's language if we've learned |
1585 | something useful (eg. tmp_language is not language_unknown). |
1586 | In addition, to match what start_subfile does, never change |
1587 | from C++ to C. */ |
1588 | if (tmp_language != language_unknown |
1589 | && (tmp_language != language_c |
1590 | || psymtab_language != language_cplus)) |
1591 | psymtab_language = tmp_language; |
1592 | |
1593 | /* In C++, one may expect the same filename to come round many |
1594 | times, when code is coming alternately from the main file |
1595 | and from inline functions in other files. So I check to see |
1596 | if this is a file we've seen before -- either the main |
1597 | source file, or a previously included file. |
1598 | |
1599 | This seems to be a lot of time to be spending on N_SOL, but |
1600 | things like "break c-exp.y:435" need to work (I |
1601 | suppose the psymtab_include_list could be hashed or put |
1602 | in a binary tree, if profiling shows this is a major hog). */ |
1603 | if (pst && strcmp (namestring, pst->filename) == 0) |
1604 | continue; |
1605 | { |
1606 | int i; |
1607 | for (i = 0; i < includes_used; i++) |
1608 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
1609 | { |
1610 | i = -1; |
1611 | break; |
1612 | } |
1613 | if (i == -1) |
1614 | continue; |
1615 | } |
1616 | |
1617 | record_include_file: |
1618 | |
1619 | psymtab_include_list[includes_used++] = namestring; |
1620 | if (includes_used >= includes_allocated) |
1621 | { |
1622 | char **orig = psymtab_include_list; |
1623 | |
1624 | psymtab_include_list = (char **) |
1625 | alloca ((includes_allocated *= 2) *__builtin_alloca((includes_allocated *= 2) * sizeof (char *)) |
1626 | sizeof (char *))__builtin_alloca((includes_allocated *= 2) * sizeof (char *)); |
1627 | memcpy (psymtab_include_list, orig, |
1628 | includes_used * sizeof (char *)); |
1629 | } |
1630 | continue; |
1631 | } |
1632 | case N_LSYM: /* Typedef or automatic variable. */ |
1633 | case N_STSYM: /* Data seg var -- static */ |
1634 | case N_LCSYM: /* BSS " */ |
1635 | case N_ROSYM: /* Read-only data seg var -- static. */ |
1636 | case N_NBSTS: /* Gould nobase. */ |
1637 | case N_NBLCS: /* symbols. */ |
1638 | case N_FUN: |
1639 | case N_GSYM: /* Global (extern) variable; can be |
1640 | data or bss (sigh FIXME). */ |
1641 | |
1642 | /* Following may probably be ignored; I'll leave them here |
1643 | for now (until I do Pascal and Modula 2 extensions). */ |
1644 | |
1645 | case N_PC: /* I may or may not need this; I |
1646 | suspect not. */ |
1647 | case N_M2C: /* I suspect that I can ignore this here. */ |
1648 | case N_SCOPE: /* Same. */ |
1649 | |
1650 | namestring = set_namestring (objfile, nlist); |
1651 | |
1652 | /* See if this is an end of function stab. */ |
1653 | if (pst && nlist.n_type == N_FUN && *namestring == '\000') |
1654 | { |
1655 | CORE_ADDR valu; |
1656 | |
1657 | /* It's value is the size (in bytes) of the function for |
1658 | function relative stabs, or the address of the function's |
1659 | end for old style stabs. */ |
1660 | valu = nlist.n_value + last_function_start; |
1661 | if (pst->texthigh == 0 || valu > pst->texthigh) |
1662 | pst->texthigh = valu; |
1663 | break; |
1664 | } |
1665 | |
1666 | p = (char *) strchr (namestring, ':'); |
1667 | if (!p) |
1668 | continue; /* Not a debugging symbol. */ |
1669 | |
1670 | |
1671 | |
1672 | /* Main processing section for debugging symbols which |
1673 | the initial read through the symbol tables needs to worry |
1674 | about. If we reach this point, the symbol which we are |
1675 | considering is definitely one we are interested in. |
1676 | p must also contain the (valid) index into the namestring |
1677 | which indicates the debugging type symbol. */ |
1678 | |
1679 | switch (p[1]) |
1680 | { |
1681 | case 'S': |
1682 | nlist.n_value += ANOFFSET (objfile->section_offsets, data_sect_index)((data_sect_index == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1682, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[data_sect_index]); |
1683 | #ifdef STATIC_TRANSFORM_NAME |
1684 | namestring = STATIC_TRANSFORM_NAME (namestring); |
1685 | #endif |
1686 | add_psymbol_to_list (namestring, p - namestring, |
1687 | VAR_DOMAIN, LOC_STATIC, |
1688 | &objfile->static_psymbols, |
1689 | 0, nlist.n_value, |
1690 | psymtab_language, objfile); |
1691 | continue; |
1692 | case 'G': |
1693 | nlist.n_value += ANOFFSET (objfile->section_offsets, data_sect_index)((data_sect_index == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1693, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[data_sect_index]); |
1694 | /* The addresses in these entries are reported to be |
1695 | wrong. See the code that reads 'G's for symtabs. */ |
1696 | add_psymbol_to_list (namestring, p - namestring, |
1697 | VAR_DOMAIN, LOC_STATIC, |
1698 | &objfile->global_psymbols, |
1699 | 0, nlist.n_value, |
1700 | psymtab_language, objfile); |
1701 | continue; |
1702 | |
1703 | case 'T': |
1704 | /* When a 'T' entry is defining an anonymous enum, it |
1705 | may have a name which is the empty string, or a |
1706 | single space. Since they're not really defining a |
1707 | symbol, those shouldn't go in the partial symbol |
1708 | table. We do pick up the elements of such enums at |
1709 | 'check_enum:', below. */ |
1710 | if (p >= namestring + 2 |
1711 | || (p == namestring + 1 |
1712 | && namestring[0] != ' ')) |
1713 | { |
1714 | add_psymbol_to_list (namestring, p - namestring, |
1715 | STRUCT_DOMAIN, LOC_TYPEDEF, |
1716 | &objfile->static_psymbols, |
1717 | nlist.n_value, 0, |
1718 | psymtab_language, objfile); |
1719 | if (p[2] == 't') |
1720 | { |
1721 | /* Also a typedef with the same name. */ |
1722 | add_psymbol_to_list (namestring, p - namestring, |
1723 | VAR_DOMAIN, LOC_TYPEDEF, |
1724 | &objfile->static_psymbols, |
1725 | nlist.n_value, 0, |
1726 | psymtab_language, objfile); |
1727 | p += 1; |
1728 | } |
1729 | } |
1730 | goto check_enum; |
1731 | case 't': |
1732 | if (p != namestring) /* a name is there, not just :T... */ |
1733 | { |
1734 | add_psymbol_to_list (namestring, p - namestring, |
1735 | VAR_DOMAIN, LOC_TYPEDEF, |
1736 | &objfile->static_psymbols, |
1737 | nlist.n_value, 0, |
1738 | psymtab_language, objfile); |
1739 | } |
1740 | check_enum: |
1741 | /* If this is an enumerated type, we need to |
1742 | add all the enum constants to the partial symbol |
1743 | table. This does not cover enums without names, e.g. |
1744 | "enum {a, b} c;" in C, but fortunately those are |
1745 | rare. There is no way for GDB to find those from the |
1746 | enum type without spending too much time on it. Thus |
1747 | to solve this problem, the compiler needs to put out the |
1748 | enum in a nameless type. GCC2 does this. */ |
1749 | |
1750 | /* We are looking for something of the form |
1751 | <name> ":" ("t" | "T") [<number> "="] "e" |
1752 | {<constant> ":" <value> ","} ";". */ |
1753 | |
1754 | /* Skip over the colon and the 't' or 'T'. */ |
1755 | p += 2; |
1756 | /* This type may be given a number. Also, numbers can come |
1757 | in pairs like (0,26). Skip over it. */ |
1758 | while ((*p >= '0' && *p <= '9') |
1759 | || *p == '(' || *p == ',' || *p == ')' |
1760 | || *p == '=') |
1761 | p++; |
1762 | |
1763 | if (*p++ == 'e') |
1764 | { |
1765 | /* The aix4 compiler emits extra crud before the members. */ |
1766 | if (*p == '-') |
1767 | { |
1768 | /* Skip over the type (?). */ |
1769 | while (*p != ':') |
1770 | p++; |
1771 | |
1772 | /* Skip over the colon. */ |
1773 | p++; |
1774 | } |
1775 | |
1776 | /* We have found an enumerated type. */ |
1777 | /* According to comments in read_enum_type |
1778 | a comma could end it instead of a semicolon. |
1779 | I don't know where that happens. |
1780 | Accept either. */ |
1781 | while (*p && *p != ';' && *p != ',') |
1782 | { |
1783 | char *q; |
1784 | |
1785 | /* Check for and handle cretinous dbx symbol name |
1786 | continuation! */ |
1787 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) |
1788 | p = next_symbol_text (objfile)(*next_symbol_text_func)(objfile); |
1789 | |
1790 | /* Point to the character after the name |
1791 | of the enum constant. */ |
1792 | for (q = p; *q && *q != ':'; q++) |
1793 | ; |
1794 | /* Note that the value doesn't matter for |
1795 | enum constants in psymtabs, just in symtabs. */ |
1796 | add_psymbol_to_list (p, q - p, |
1797 | VAR_DOMAIN, LOC_CONST, |
1798 | &objfile->static_psymbols, 0, |
1799 | 0, psymtab_language, objfile); |
1800 | /* Point past the name. */ |
1801 | p = q; |
1802 | /* Skip over the value. */ |
1803 | while (*p && *p != ',') |
1804 | p++; |
1805 | /* Advance past the comma. */ |
1806 | if (*p) |
1807 | p++; |
1808 | } |
1809 | } |
1810 | continue; |
1811 | case 'c': |
1812 | /* Constant, e.g. from "const" in Pascal. */ |
1813 | add_psymbol_to_list (namestring, p - namestring, |
1814 | VAR_DOMAIN, LOC_CONST, |
1815 | &objfile->static_psymbols, nlist.n_value, |
1816 | 0, psymtab_language, objfile); |
1817 | continue; |
1818 | |
1819 | case 'f': |
1820 | if (! pst) |
1821 | { |
1822 | int name_len = p - namestring; |
1823 | char *name = xmalloc (name_len + 1); |
1824 | memcpy (name, namestring, name_len); |
1825 | name[name_len] = '\0'; |
1826 | function_outside_compilation_unit_complaint (name); |
1827 | xfree (name); |
1828 | } |
1829 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1829, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1829, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1829, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
1830 | /* Kludges for ELF/STABS with Sun ACC */ |
1831 | last_function_name = namestring; |
1832 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
1833 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit |
1834 | value for the bottom of the text seg in those cases. */ |
1835 | if (nlist.n_value == ANOFFSET (objfile->section_offsets,((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1836, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1836, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1836, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]) |
1836 | SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1836, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1836, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1836, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)])) |
1837 | { |
1838 | CORE_ADDR minsym_valu = |
1839 | find_stab_function_addr (namestring, pst->filename, objfile); |
1840 | /* find_stab_function_addr will return 0 if the minimal |
1841 | symbol wasn't found. (Unfortunately, this might also |
1842 | be a valid address.) Anyway, if it *does* return 0, |
1843 | it is likely that the value was set correctly to begin |
1844 | with... */ |
1845 | if (minsym_valu != 0) |
1846 | nlist.n_value = minsym_valu; |
1847 | } |
1848 | if (pst && textlow_not_set) |
1849 | { |
1850 | pst->textlow = nlist.n_value; |
1851 | textlow_not_set = 0; |
1852 | } |
1853 | #endif |
1854 | /* End kludge. */ |
1855 | |
1856 | /* Keep track of the start of the last function so we |
1857 | can handle end of function symbols. */ |
1858 | last_function_start = nlist.n_value; |
1859 | |
1860 | /* In reordered executables this function may lie outside |
1861 | the bounds created by N_SO symbols. If that's the case |
1862 | use the address of this function as the low bound for |
1863 | the partial symbol table. */ |
1864 | if (pst |
1865 | && (textlow_not_set |
1866 | || (nlist.n_value < pst->textlow |
1867 | && (nlist.n_value |
1868 | != ANOFFSET (objfile->section_offsets,((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1869, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1869, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1869, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]) |
1869 | SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1869, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1869, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1869, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]))))) |
1870 | { |
1871 | pst->textlow = nlist.n_value; |
1872 | textlow_not_set = 0; |
1873 | } |
1874 | add_psymbol_to_list (namestring, p - namestring, |
1875 | VAR_DOMAIN, LOC_BLOCK, |
1876 | &objfile->static_psymbols, |
1877 | 0, nlist.n_value, |
1878 | psymtab_language, objfile); |
1879 | continue; |
1880 | |
1881 | /* Global functions were ignored here, but now they |
1882 | are put into the global psymtab like one would expect. |
1883 | They're also in the minimal symbol table. */ |
1884 | case 'F': |
1885 | if (! pst) |
1886 | { |
1887 | int name_len = p - namestring; |
1888 | char *name = xmalloc (name_len + 1); |
1889 | memcpy (name, namestring, name_len); |
1890 | name[name_len] = '\0'; |
1891 | function_outside_compilation_unit_complaint (name); |
1892 | xfree (name); |
1893 | } |
1894 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1894, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1894, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1894, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
1895 | /* Kludges for ELF/STABS with Sun ACC */ |
1896 | last_function_name = namestring; |
1897 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
1898 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit |
1899 | value for the bottom of the text seg in those cases. */ |
1900 | if (nlist.n_value == ANOFFSET (objfile->section_offsets,((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1901, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1901, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1901, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]) |
1901 | SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1901, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1901, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1901, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)])) |
1902 | { |
1903 | CORE_ADDR minsym_valu = |
1904 | find_stab_function_addr (namestring, pst->filename, objfile); |
1905 | /* find_stab_function_addr will return 0 if the minimal |
1906 | symbol wasn't found. (Unfortunately, this might also |
1907 | be a valid address.) Anyway, if it *does* return 0, |
1908 | it is likely that the value was set correctly to begin |
1909 | with... */ |
1910 | if (minsym_valu != 0) |
1911 | nlist.n_value = minsym_valu; |
1912 | } |
1913 | if (pst && textlow_not_set) |
1914 | { |
1915 | pst->textlow = nlist.n_value; |
1916 | textlow_not_set = 0; |
1917 | } |
1918 | #endif |
1919 | /* End kludge. */ |
1920 | |
1921 | /* Keep track of the start of the last function so we |
1922 | can handle end of function symbols. */ |
1923 | last_function_start = nlist.n_value; |
1924 | |
1925 | /* In reordered executables this function may lie outside |
1926 | the bounds created by N_SO symbols. If that's the case |
1927 | use the address of this function as the low bound for |
1928 | the partial symbol table. */ |
1929 | if (pst |
1930 | && (textlow_not_set |
1931 | || (nlist.n_value < pst->textlow |
1932 | && (nlist.n_value |
1933 | != ANOFFSET (objfile->section_offsets,((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1934, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1934, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1934, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]) |
1934 | SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1934, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1934, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1934, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]))))) |
1935 | { |
1936 | pst->textlow = nlist.n_value; |
1937 | textlow_not_set = 0; |
1938 | } |
1939 | add_psymbol_to_list (namestring, p - namestring, |
1940 | VAR_DOMAIN, LOC_BLOCK, |
1941 | &objfile->global_psymbols, |
1942 | 0, nlist.n_value, |
1943 | psymtab_language, objfile); |
1944 | continue; |
1945 | |
1946 | /* Two things show up here (hopefully); static symbols of |
1947 | local scope (static used inside braces) or extensions |
1948 | of structure symbols. We can ignore both. */ |
1949 | case 'V': |
1950 | case '(': |
1951 | case '0': |
1952 | case '1': |
1953 | case '2': |
1954 | case '3': |
1955 | case '4': |
1956 | case '5': |
1957 | case '6': |
1958 | case '7': |
1959 | case '8': |
1960 | case '9': |
1961 | case '-': |
1962 | case '#': /* for symbol identification (used in live ranges) */ |
1963 | continue; |
1964 | |
1965 | case ':': |
1966 | /* It is a C++ nested symbol. We don't need to record it |
1967 | (I don't think); if we try to look up foo::bar::baz, |
1968 | then symbols for the symtab containing foo should get |
1969 | read in, I think. */ |
1970 | /* Someone says sun cc puts out symbols like |
1971 | /foo/baz/maclib::/usr/local/bin/maclib, |
1972 | which would get here with a symbol type of ':'. */ |
1973 | continue; |
1974 | |
1975 | default: |
1976 | /* Unexpected symbol descriptor. The second and subsequent stabs |
1977 | of a continued stab can show up here. The question is |
1978 | whether they ever can mimic a normal stab--it would be |
1979 | nice if not, since we certainly don't want to spend the |
1980 | time searching to the end of every string looking for |
1981 | a backslash. */ |
1982 | |
1983 | complaint (&symfile_complaints, "unknown symbol descriptor `%c'", |
1984 | p[1]); |
1985 | |
1986 | /* Ignore it; perhaps it is an extension that we don't |
1987 | know about. */ |
1988 | continue; |
1989 | } |
1990 | |
1991 | case N_EXCL: |
1992 | |
1993 | namestring = set_namestring (objfile, nlist); |
1994 | |
1995 | /* Find the corresponding bincl and mark that psymtab on the |
1996 | psymtab dependency list */ |
1997 | { |
1998 | struct partial_symtab *needed_pst = |
1999 | find_corresponding_bincl_psymtab (namestring, nlist.n_value); |
2000 | |
2001 | /* If this include file was defined earlier in this file, |
2002 | leave it alone. */ |
2003 | if (needed_pst == pst) |
2004 | continue; |
2005 | |
2006 | if (needed_pst) |
2007 | { |
2008 | int i; |
2009 | int found = 0; |
2010 | |
2011 | for (i = 0; i < dependencies_used; i++) |
2012 | if (dependency_list[i] == needed_pst) |
2013 | { |
2014 | found = 1; |
2015 | break; |
2016 | } |
2017 | |
2018 | /* If it's already in the list, skip the rest. */ |
2019 | if (found) |
2020 | continue; |
2021 | |
2022 | dependency_list[dependencies_used++] = needed_pst; |
2023 | if (dependencies_used >= dependencies_allocated) |
2024 | { |
2025 | struct partial_symtab **orig = dependency_list; |
2026 | dependency_list = |
2027 | (struct partial_symtab **) |
2028 | alloca ((dependencies_allocated *= 2)__builtin_alloca((dependencies_allocated *= 2) * sizeof (struct partial_symtab *)) |
2029 | * sizeof (struct partial_symtab *))__builtin_alloca((dependencies_allocated *= 2) * sizeof (struct partial_symtab *)); |
2030 | memcpy (dependency_list, orig, |
2031 | (dependencies_used |
2032 | * sizeof (struct partial_symtab *))); |
2033 | #ifdef DEBUG_INFO |
2034 | fprintf_unfiltered (gdb_stderr, "Had to reallocate dependency list.\n"); |
2035 | fprintf_unfiltered (gdb_stderr, "New dependencies allocated: %d\n", |
2036 | dependencies_allocated); |
2037 | #endif |
2038 | } |
2039 | } |
2040 | } |
2041 | continue; |
2042 | |
2043 | case N_ENDM: |
2044 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
2045 | /* Solaris 2 end of module, finish current partial symbol table. |
2046 | end_psymtab will set pst->texthigh to the proper value, which |
2047 | is necessary if a module compiled without debugging info |
2048 | follows this module. */ |
2049 | if (pst) |
2050 | { |
2051 | end_psymtab (pst, psymtab_include_list, includes_used, |
2052 | symnum * symbol_size, |
2053 | (CORE_ADDR) 0, |
2054 | dependency_list, dependencies_used, textlow_not_set); |
2055 | pst = (struct partial_symtab *) 0; |
2056 | includes_used = 0; |
2057 | dependencies_used = 0; |
2058 | } |
2059 | #endif |
2060 | continue; |
2061 | |
2062 | case N_RBRAC: |
2063 | #ifdef HANDLE_RBRAC |
2064 | HANDLE_RBRAC (nlist.n_value); |
2065 | continue; |
2066 | #endif |
2067 | case N_EINCL: |
2068 | case N_DSLINE: |
2069 | case N_BSLINE: |
2070 | case N_SSYM: /* Claim: Structure or union element. |
2071 | Hopefully, I can ignore this. */ |
2072 | case N_ENTRY: /* Alternate entry point; can ignore. */ |
2073 | case N_MAIN: /* Can definitely ignore this. */ |
2074 | case N_CATCH: /* These are GNU C++ extensions */ |
2075 | case N_EHDECL: /* that can safely be ignored here. */ |
2076 | case N_LENG: |
2077 | case N_BCOMM: |
2078 | case N_ECOMM: |
2079 | case N_ECOML: |
2080 | case N_FNAME: |
2081 | case N_SLINE: |
2082 | case N_RSYM: |
2083 | case N_PSYM: |
2084 | case N_LBRAC: |
2085 | case N_NSYMS: /* Ultrix 4.0: symbol count */ |
2086 | case N_DEFD: /* GNU Modula-2 */ |
2087 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
2088 | |
2089 | case N_OBJ: /* useless types from Solaris */ |
2090 | case N_OPT: |
2091 | case N_PATCH: |
2092 | /* These symbols aren't interesting; don't worry about them */ |
2093 | |
2094 | continue; |
2095 | |
2096 | default: |
2097 | /* If we haven't found it yet, ignore it. It's probably some |
2098 | new type we don't know about yet. */ |
2099 | unknown_symtype_complaint (hex_string (nlist.n_type)); |
2100 | continue; |
2101 | } |
2102 | } |
2103 | |
2104 | /* If there's stuff to be cleaned up, clean it up. */ |
2105 | if (pst) |
2106 | { |
2107 | /* Don't set pst->texthigh lower than it already is. */ |
2108 | CORE_ADDR text_end = |
2109 | (lowest_text_address == (CORE_ADDR) -1 |
2110 | ? (text_addr + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2110, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2110, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2110, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)])) |
2111 | : lowest_text_address) |
2112 | + text_size; |
2113 | |
2114 | end_psymtab (pst, psymtab_include_list, includes_used, |
2115 | symnum * symbol_size, |
2116 | text_end > pst->texthigh ? text_end : pst->texthigh, |
2117 | dependency_list, dependencies_used, textlow_not_set); |
2118 | } |
2119 | |
2120 | do_cleanups (back_to); |
2121 | } |
2122 | |
2123 | /* Allocate and partially fill a partial symtab. It will be |
2124 | completely filled at the end of the symbol list. |
2125 | |
2126 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR |
2127 | is the address relative to which its symbols are (incremental) or 0 |
2128 | (normal). */ |
2129 | |
2130 | |
2131 | static struct partial_symtab * |
2132 | start_psymtab (struct objfile *objfile, char *filename, CORE_ADDR textlow, |
2133 | int ldsymoff, struct partial_symbol **global_syms, |
2134 | struct partial_symbol **static_syms) |
2135 | { |
2136 | struct partial_symtab *result = |
2137 | start_psymtab_common (objfile, objfile->section_offsets, |
2138 | filename, textlow, global_syms, static_syms); |
2139 | |
2140 | result->read_symtab_private = (char *) |
2141 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symloc))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct symloc))); if (__o->chunk_limit - __o-> next_free < __len) _obstack_newchunk (__o, __len); ((__o)-> next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base ; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char * ) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask )) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1-> next_free = __o1->chunk_limit; __o1->object_base = __o1 ->next_free; value; }); }); |
2142 | LDSYMOFF (result)(((struct symloc *)((result)->read_symtab_private))->ldsymoff ) = ldsymoff; |
2143 | result->read_symtab = dbx_psymtab_to_symtab; |
2144 | SYMBOL_SIZE (result)(((struct symloc *)((result)->read_symtab_private))->symbol_size ) = symbol_size; |
2145 | SYMBOL_OFFSET (result)(((struct symloc *)((result)->read_symtab_private))->symbol_offset ) = symbol_table_offset; |
2146 | STRING_OFFSET (result)(((struct symloc *)((result)->read_symtab_private))->string_offset ) = string_table_offset; |
2147 | FILE_STRING_OFFSET (result)(((struct symloc *)((result)->read_symtab_private))->file_string_offset ) = file_string_table_offset; |
2148 | |
2149 | /* If we're handling an ELF file, drag some section-relocation info |
2150 | for this source file out of the ELF symbol table, to compensate for |
2151 | Sun brain death. This replaces the section_offsets in this psymtab, |
2152 | if successful. */ |
2153 | elfstab_offset_sections (objfile, result); |
2154 | |
2155 | /* Deduce the source language from the filename for this psymtab. */ |
2156 | psymtab_language = deduce_language_from_filename (filename); |
2157 | |
2158 | return result; |
2159 | } |
2160 | |
2161 | /* Close off the current usage of PST. |
2162 | Returns PST or NULL if the partial symtab was empty and thrown away. |
2163 | |
2164 | FIXME: List variables and peculiarities of same. */ |
2165 | |
2166 | struct partial_symtab * |
2167 | end_psymtab (struct partial_symtab *pst, char **include_list, int num_includes, |
2168 | int capping_symbol_offset, CORE_ADDR capping_text, |
2169 | struct partial_symtab **dependency_list, int number_dependencies, |
2170 | int textlow_not_set) |
2171 | { |
2172 | int i; |
2173 | struct objfile *objfile = pst->objfile; |
2174 | |
2175 | if (capping_symbol_offset != -1) |
2176 | LDSYMLEN (pst)(((struct symloc *)((pst)->read_symtab_private))->ldsymlen ) = capping_symbol_offset - LDSYMOFF (pst)(((struct symloc *)((pst)->read_symtab_private))->ldsymoff ); |
2177 | pst->texthigh = capping_text; |
2178 | |
2179 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
2180 | /* Under Solaris, the N_SO symbols always have a value of 0, |
2181 | instead of the usual address of the .o file. Therefore, |
2182 | we have to do some tricks to fill in texthigh and textlow. |
2183 | The first trick is: if we see a static |
2184 | or global function, and the textlow for the current pst |
2185 | is not set (ie: textlow_not_set), then we use that function's |
2186 | address for the textlow of the pst. */ |
2187 | |
2188 | /* Now, to fill in texthigh, we remember the last function seen |
2189 | in the .o file. Also, there's a hack in |
2190 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field |
2191 | to here via the misc_info field. Therefore, we can fill in |
2192 | a reliable texthigh by taking the address plus size of the |
2193 | last function in the file. */ |
2194 | |
2195 | if (pst->texthigh == 0 && last_function_name) |
2196 | { |
2197 | char *p; |
2198 | int n; |
2199 | struct minimal_symbol *minsym; |
2200 | |
2201 | p = strchr (last_function_name, ':'); |
2202 | if (p == NULL((void*)0)) |
2203 | p = last_function_name; |
2204 | n = p - last_function_name; |
2205 | p = alloca (n + 2)__builtin_alloca(n + 2); |
2206 | strncpy (p, last_function_name, n); |
2207 | p[n] = 0; |
2208 | |
2209 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
2210 | if (minsym == NULL((void*)0)) |
2211 | { |
2212 | /* Sun Fortran appends an underscore to the minimal symbol name, |
2213 | try again with an appended underscore if the minimal symbol |
2214 | was not found. */ |
2215 | p[n] = '_'; |
2216 | p[n + 1] = 0; |
2217 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
2218 | } |
2219 | |
2220 | if (minsym) |
2221 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym)(minsym)->ginfo.value.address + MSYMBOL_SIZE (minsym)(minsym)->size; |
2222 | |
2223 | last_function_name = NULL((void*)0); |
2224 | } |
2225 | |
2226 | /* this test will be true if the last .o file is only data */ |
2227 | if (textlow_not_set) |
2228 | pst->textlow = pst->texthigh; |
2229 | else |
2230 | { |
2231 | struct partial_symtab *p1; |
2232 | |
2233 | /* If we know our own starting text address, then walk through all other |
2234 | psymtabs for this objfile, and if any didn't know their ending text |
2235 | address, set it to our starting address. Take care to not set our |
2236 | own ending address to our starting address, nor to set addresses on |
2237 | `dependency' files that have both textlow and texthigh zero. */ |
2238 | |
2239 | ALL_OBJFILE_PSYMTABS (objfile, p1)for ((p1) = (objfile) -> psymtabs; (p1) != ((void*)0); (p1 ) = (p1) -> next) |
2240 | { |
2241 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) |
2242 | { |
2243 | p1->texthigh = pst->textlow; |
2244 | /* if this file has only data, then make textlow match texthigh */ |
2245 | if (p1->textlow == 0) |
2246 | p1->textlow = p1->texthigh; |
2247 | } |
2248 | } |
2249 | } |
2250 | |
2251 | /* End of kludge for patching Solaris textlow and texthigh. */ |
2252 | #endif /* SOFUN_ADDRESS_MAYBE_MISSING. */ |
2253 | |
2254 | pst->n_global_syms = |
2255 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); |
2256 | pst->n_static_syms = |
2257 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); |
2258 | |
2259 | pst->number_of_dependencies = number_dependencies; |
2260 | if (number_dependencies) |
2261 | { |
2262 | pst->dependencies = (struct partial_symtab **) |
2263 | obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (number_dependencies * sizeof (struct partial_symtab *))); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }) ; __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); }) |
2264 | number_dependencies * sizeof (struct partial_symtab *))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (number_dependencies * sizeof (struct partial_symtab *))); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }) ; __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); }); |
2265 | memcpy (pst->dependencies, dependency_list, |
2266 | number_dependencies * sizeof (struct partial_symtab *)); |
2267 | } |
2268 | else |
2269 | pst->dependencies = 0; |
2270 | |
2271 | for (i = 0; i < num_includes; i++) |
2272 | { |
2273 | struct partial_symtab *subpst = |
2274 | allocate_psymtab (include_list[i], objfile); |
2275 | |
2276 | /* Copy the sesction_offsets array from the main psymtab. */ |
2277 | subpst->section_offsets = pst->section_offsets; |
2278 | subpst->read_symtab_private = |
2279 | (char *) obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct symloc))); if (__o->chunk_limit - __o-> next_free < __len) _obstack_newchunk (__o, __len); ((__o)-> next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base ; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char * ) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask )) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1-> next_free = __o1->chunk_limit; __o1->object_base = __o1 ->next_free; value; }); }) |
2280 | sizeof (struct symloc))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct symloc))); if (__o->chunk_limit - __o-> next_free < __len) _obstack_newchunk (__o, __len); ((__o)-> next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base ; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char * ) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask )) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1-> next_free = __o1->chunk_limit; __o1->object_base = __o1 ->next_free; value; }); }); |
2281 | LDSYMOFF (subpst)(((struct symloc *)((subpst)->read_symtab_private))->ldsymoff ) = |
2282 | LDSYMLEN (subpst)(((struct symloc *)((subpst)->read_symtab_private))->ldsymlen ) = |
2283 | subpst->textlow = |
2284 | subpst->texthigh = 0; |
2285 | |
2286 | /* We could save slight bits of space by only making one of these, |
2287 | shared by the entire set of include files. FIXME-someday. */ |
2288 | subpst->dependencies = (struct partial_symtab **) |
2289 | obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct partial_symtab *))); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len) ; ((__o)->next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void * ) __o1->object_base; if (__o1->next_free == value) __o1 ->maybe_empty_object = 1; __o1->next_free = (((((__o1-> next_free) - (char *) 0)+__o1->alignment_mask) & ~ (__o1 ->alignment_mask)) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1 ->chunk) __o1->next_free = __o1->chunk_limit; __o1-> object_base = __o1->next_free; value; }); }) |
2290 | sizeof (struct partial_symtab *))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct partial_symtab *))); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len) ; ((__o)->next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void * ) __o1->object_base; if (__o1->next_free == value) __o1 ->maybe_empty_object = 1; __o1->next_free = (((((__o1-> next_free) - (char *) 0)+__o1->alignment_mask) & ~ (__o1 ->alignment_mask)) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1 ->chunk) __o1->next_free = __o1->chunk_limit; __o1-> object_base = __o1->next_free; value; }); }); |
2291 | subpst->dependencies[0] = pst; |
2292 | subpst->number_of_dependencies = 1; |
2293 | |
2294 | subpst->globals_offset = |
2295 | subpst->n_global_syms = |
2296 | subpst->statics_offset = |
2297 | subpst->n_static_syms = 0; |
2298 | |
2299 | subpst->readin = 0; |
2300 | subpst->symtab = 0; |
2301 | subpst->read_symtab = pst->read_symtab; |
2302 | } |
2303 | |
2304 | sort_pst_symbols (pst); |
2305 | |
2306 | /* If there is already a psymtab or symtab for a file of this name, remove it. |
2307 | (If there is a symtab, more drastic things also happen.) |
2308 | This happens in VxWorks. */ |
2309 | free_named_symtabs (pst->filename); |
2310 | |
2311 | if (num_includes == 0 |
2312 | && number_dependencies == 0 |
2313 | && pst->n_global_syms == 0 |
2314 | && pst->n_static_syms == 0 |
2315 | && has_line_numbers == 0) |
2316 | { |
2317 | /* Throw away this psymtab, it's empty. We can't deallocate it, since |
2318 | it is on the obstack, but we can forget to chain it on the list. */ |
2319 | /* Empty psymtabs happen as a result of header files which don't have |
2320 | any symbols in them. There can be a lot of them. But this check |
2321 | is wrong, in that a psymtab with N_SLINE entries but nothing else |
2322 | is not empty, but we don't realize that. Fixing that without slowing |
2323 | things down might be tricky. */ |
2324 | |
2325 | discard_psymtab (pst); |
2326 | |
2327 | /* Indicate that psymtab was thrown away. */ |
2328 | pst = (struct partial_symtab *) NULL((void*)0); |
2329 | } |
2330 | return pst; |
2331 | } |
2332 | |
2333 | static void |
2334 | dbx_psymtab_to_symtab_1 (struct partial_symtab *pst) |
2335 | { |
2336 | struct cleanup *old_chain; |
2337 | int i; |
2338 | |
2339 | if (!pst) |
2340 | return; |
2341 | |
2342 | if (pst->readin) |
2343 | { |
2344 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
2345 | pst->filename); |
2346 | return; |
2347 | } |
2348 | |
2349 | /* Read in all partial symtabs on which this one is dependent */ |
2350 | for (i = 0; i < pst->number_of_dependencies; i++) |
2351 | if (!pst->dependencies[i]->readin) |
2352 | { |
2353 | /* Inform about additional files that need to be read in. */ |
2354 | if (info_verbose) |
2355 | { |
2356 | fputs_filtered (" ", gdb_stdout); |
2357 | wrap_here (""); |
2358 | fputs_filtered ("and ", gdb_stdout); |
2359 | wrap_here (""); |
2360 | printf_filtered ("%s...", pst->dependencies[i]->filename); |
2361 | wrap_here (""); /* Flush output */ |
2362 | gdb_flush (gdb_stdout); |
2363 | } |
2364 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); |
2365 | } |
2366 | |
2367 | if (LDSYMLEN (pst)(((struct symloc *)((pst)->read_symtab_private))->ldsymlen )) /* Otherwise it's a dummy */ |
2368 | { |
2369 | /* Init stuff necessary for reading in symbols */ |
2370 | stabsread_init (); |
2371 | buildsym_init (); |
2372 | old_chain = make_cleanup (really_free_pendings, 0); |
2373 | file_string_table_offset = FILE_STRING_OFFSET (pst)(((struct symloc *)((pst)->read_symtab_private))->file_string_offset ); |
2374 | symbol_size = SYMBOL_SIZE (pst)(((struct symloc *)((pst)->read_symtab_private))->symbol_size ); |
2375 | |
2376 | /* Read in this file's symbols */ |
2377 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst)(((struct symloc *)((pst)->read_symtab_private))->symbol_offset ), SEEK_SET0); |
2378 | read_ofile_symtab (pst); |
2379 | |
2380 | do_cleanups (old_chain); |
2381 | } |
2382 | |
2383 | pst->readin = 1; |
2384 | } |
2385 | |
2386 | /* Read in all of the symbols for a given psymtab for real. |
2387 | Be verbose about it if the user wants that. */ |
2388 | |
2389 | static void |
2390 | dbx_psymtab_to_symtab (struct partial_symtab *pst) |
2391 | { |
2392 | bfd *sym_bfd; |
2393 | struct cleanup *back_to = NULL((void*)0); |
2394 | |
2395 | if (!pst) |
2396 | return; |
2397 | |
2398 | if (pst->readin) |
2399 | { |
2400 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
2401 | pst->filename); |
2402 | return; |
2403 | } |
2404 | |
2405 | if (LDSYMLEN (pst)(((struct symloc *)((pst)->read_symtab_private))->ldsymlen ) || pst->number_of_dependencies) |
2406 | { |
2407 | /* Print the message now, before reading the string table, |
2408 | to avoid disconcerting pauses. */ |
2409 | if (info_verbose) |
2410 | { |
2411 | printf_filtered ("Reading in symbols for %s...", pst->filename); |
2412 | gdb_flush (gdb_stdout); |
2413 | } |
2414 | |
2415 | sym_bfd = pst->objfile->obfd; |
2416 | |
2417 | next_symbol_text_func = dbx_next_symbol_text; |
2418 | |
2419 | if (DBX_STAB_SECTION (pst->objfile)(((pst->objfile)->sym_stab_info)->stab_section)) |
2420 | { |
2421 | stabs_data |
2422 | = symfile_relocate_debug_section (pst->objfile->obfd, |
2423 | DBX_STAB_SECTION (pst->objfile)(((pst->objfile)->sym_stab_info)->stab_section), |
2424 | NULL((void*)0)); |
2425 | if (stabs_data) |
2426 | back_to = make_cleanup (free_current_contents, (void *) &stabs_data); |
2427 | } |
2428 | |
2429 | dbx_psymtab_to_symtab_1 (pst); |
2430 | |
2431 | if (back_to) |
2432 | do_cleanups (back_to); |
2433 | |
2434 | /* Match with global symbols. This only needs to be done once, |
2435 | after all of the symtabs and dependencies have been read in. */ |
2436 | scan_file_globals (pst->objfile); |
2437 | |
2438 | /* Finish up the debug error message. */ |
2439 | if (info_verbose) |
2440 | printf_filtered ("done.\n"); |
2441 | } |
2442 | } |
2443 | |
2444 | /* Read in a defined section of a specific object file's symbols. */ |
2445 | |
2446 | static void |
2447 | read_ofile_symtab (struct partial_symtab *pst) |
2448 | { |
2449 | char *namestring; |
2450 | struct external_nlist *bufp; |
2451 | struct internal_nlist nlist; |
2452 | unsigned char type; |
2453 | unsigned max_symnum; |
2454 | bfd *abfd; |
2455 | struct objfile *objfile; |
2456 | int sym_offset; /* Offset to start of symbols to read */ |
2457 | int sym_size; /* Size of symbols to read */ |
2458 | CORE_ADDR text_offset; /* Start of text segment for symbols */ |
2459 | int text_size; /* Size of text segment for symbols */ |
2460 | struct section_offsets *section_offsets; |
2461 | |
2462 | objfile = pst->objfile; |
2463 | sym_offset = LDSYMOFF (pst)(((struct symloc *)((pst)->read_symtab_private))->ldsymoff ); |
2464 | sym_size = LDSYMLEN (pst)(((struct symloc *)((pst)->read_symtab_private))->ldsymlen ); |
2465 | text_offset = pst->textlow; |
2466 | text_size = pst->texthigh - pst->textlow; |
2467 | /* This cannot be simply objfile->section_offsets because of |
2468 | elfstab_offset_sections() which initializes the psymtab section |
2469 | offsets information in a special way, and that is different from |
2470 | objfile->section_offsets. */ |
2471 | section_offsets = pst->section_offsets; |
2472 | |
2473 | current_objfile = objfile; |
2474 | subfile_stack = NULL((void*)0); |
2475 | |
2476 | stringtab_global = DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab); |
2477 | last_source_file = NULL((void*)0); |
2478 | |
2479 | abfd = objfile->obfd; |
2480 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ |
2481 | symbuf_end = symbuf_idx = 0; |
2482 | symbuf_read = 0; |
2483 | symbuf_left = sym_offset + sym_size; |
2484 | |
2485 | /* It is necessary to actually read one symbol *before* the start |
2486 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL |
2487 | occurs before the N_SO symbol. |
2488 | |
2489 | Detecting this in read_dbx_symtab |
2490 | would slow down initial readin, so we look for it here instead. */ |
2491 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
2492 | { |
2493 | stabs_seek (sym_offset - symbol_size); |
2494 | fill_symbuf (abfd); |
2495 | bufp = &symbuf[symbuf_idx++]; |
2496 | INTERNALIZE_SYMBOL (nlist, bufp, abfd){ (nlist).n_type = (*(unsigned char *) ((bufp)->e_type) & 0xff); (nlist).n_strx = ((*((abfd)->xvec->bfd_h_getx32 )) ((bufp)->e_strx)); (nlist).n_desc = ((*((abfd)->xvec ->bfd_h_getx16)) ((bufp)->e_desc)); if (bfd_get_sign_extend_vma (abfd)) (nlist).n_value = ((*((abfd)->xvec->bfd_h_getx_signed_32 )) ((bufp)->e_value)); else (nlist).n_value = ((*((abfd)-> xvec->bfd_h_getx32)) ((bufp)->e_value)); }; |
2497 | OBJSTAT (objfile, n_stabs++)(objfile -> stats.n_stabs++); |
2498 | |
2499 | namestring = set_namestring (objfile, nlist); |
2500 | |
2501 | processing_gcc_compilation = 0; |
2502 | if (nlist.n_type == N_TEXT4) |
2503 | { |
2504 | const char *tempstring = namestring; |
2505 | |
2506 | if (DEPRECATED_STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)(strcmp ((namestring), ("gcc_compiled.")) == 0)) |
2507 | processing_gcc_compilation = 1; |
2508 | else if (DEPRECATED_STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)(strcmp ((namestring), ("gcc2_compiled.")) == 0)) |
2509 | processing_gcc_compilation = 2; |
2510 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)((symfile_bfd)->xvec->symbol_leading_char)) |
2511 | ++tempstring; |
2512 | if (DEPRECATED_STREQN (tempstring, "__gnu_compiled", 14)(strncmp ((tempstring), ("__gnu_compiled"), (14)) == 0)) |
2513 | processing_gcc_compilation = 2; |
2514 | } |
2515 | |
2516 | /* Try to select a C++ demangling based on the compilation unit |
2517 | producer. */ |
2518 | |
2519 | #if 0 |
2520 | /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't |
2521 | know whether it will use the old style or v3 mangling. */ |
2522 | if (processing_gcc_compilation) |
2523 | { |
2524 | if (AUTO_DEMANGLING(((int) current_demangling_style) & (1 << 8))) |
2525 | { |
2526 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING"gnu"); |
2527 | } |
2528 | } |
2529 | #endif |
2530 | } |
2531 | else |
2532 | { |
2533 | /* The N_SO starting this symtab is the first symbol, so we |
2534 | better not check the symbol before it. I'm not this can |
2535 | happen, but it doesn't hurt to check for it. */ |
2536 | stabs_seek (sym_offset); |
2537 | processing_gcc_compilation = 0; |
2538 | } |
2539 | |
2540 | if (symbuf_idx == symbuf_end) |
2541 | fill_symbuf (abfd); |
2542 | bufp = &symbuf[symbuf_idx]; |
2543 | if (bfd_h_get_8 (abfd, bufp->e_type)(*(unsigned char *) (bufp->e_type) & 0xff) != N_SO) |
2544 | error ("First symbol in segment of executable not a source symbol"); |
2545 | |
2546 | max_symnum = sym_size / symbol_size; |
2547 | |
2548 | for (symnum = 0; |
2549 | symnum < max_symnum; |
2550 | symnum++) |
2551 | { |
2552 | QUIT{ if (quit_flag) quit (); if (deprecated_interactive_hook) deprecated_interactive_hook (); }; /* Allow this to be interruptable */ |
2553 | if (symbuf_idx == symbuf_end) |
2554 | fill_symbuf (abfd); |
2555 | bufp = &symbuf[symbuf_idx++]; |
2556 | INTERNALIZE_SYMBOL (nlist, bufp, abfd){ (nlist).n_type = (*(unsigned char *) ((bufp)->e_type) & 0xff); (nlist).n_strx = ((*((abfd)->xvec->bfd_h_getx32 )) ((bufp)->e_strx)); (nlist).n_desc = ((*((abfd)->xvec ->bfd_h_getx16)) ((bufp)->e_desc)); if (bfd_get_sign_extend_vma (abfd)) (nlist).n_value = ((*((abfd)->xvec->bfd_h_getx_signed_32 )) ((bufp)->e_value)); else (nlist).n_value = ((*((abfd)-> xvec->bfd_h_getx32)) ((bufp)->e_value)); }; |
2557 | OBJSTAT (objfile, n_stabs++)(objfile -> stats.n_stabs++); |
2558 | |
2559 | type = bfd_h_get_8 (abfd, bufp->e_type)(*(unsigned char *) (bufp->e_type) & 0xff); |
2560 | |
2561 | namestring = set_namestring (objfile, nlist); |
2562 | |
2563 | if (type & N_STAB0xe0) |
2564 | { |
2565 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
2566 | namestring, section_offsets, objfile); |
2567 | } |
2568 | /* We skip checking for a new .o or -l file; that should never |
2569 | happen in this routine. */ |
2570 | else if (type == N_TEXT4) |
2571 | { |
2572 | /* I don't think this code will ever be executed, because |
2573 | the GCC_COMPILED_FLAG_SYMBOL usually is right before |
2574 | the N_SO symbol which starts this source file. |
2575 | However, there is no reason not to accept |
2576 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ |
2577 | |
2578 | if (DEPRECATED_STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)(strcmp ((namestring), ("gcc_compiled.")) == 0)) |
2579 | processing_gcc_compilation = 1; |
2580 | else if (DEPRECATED_STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)(strcmp ((namestring), ("gcc2_compiled.")) == 0)) |
2581 | processing_gcc_compilation = 2; |
2582 | |
2583 | #if 0 |
2584 | /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't |
2585 | know whether it will use the old style or v3 mangling. */ |
2586 | if (AUTO_DEMANGLING(((int) current_demangling_style) & (1 << 8))) |
2587 | { |
2588 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING"gnu"); |
2589 | } |
2590 | #endif |
2591 | } |
2592 | else if (type & N_EXT1 || type == (unsigned char) N_TEXT4 |
2593 | || type == (unsigned char) N_NBTEXT |
2594 | ) |
2595 | { |
2596 | /* Global symbol: see if we came across a dbx defintion for |
2597 | a corresponding symbol. If so, store the value. Remove |
2598 | syms from the chain when their values are stored, but |
2599 | search the whole chain, as there may be several syms from |
2600 | different files with the same name. */ |
2601 | /* This is probably not true. Since the files will be read |
2602 | in one at a time, each reference to a global symbol will |
2603 | be satisfied in each file as it appears. So we skip this |
2604 | section. */ |
2605 | ; |
2606 | } |
2607 | } |
2608 | |
2609 | current_objfile = NULL((void*)0); |
2610 | |
2611 | /* In a Solaris elf file, this variable, which comes from the |
2612 | value of the N_SO symbol, will still be 0. Luckily, text_offset, |
2613 | which comes from pst->textlow is correct. */ |
2614 | if (last_source_start_addr == 0) |
2615 | last_source_start_addr = text_offset; |
2616 | |
2617 | /* In reordered executables last_source_start_addr may not be the |
2618 | lower bound for this symtab, instead use text_offset which comes |
2619 | from pst->textlow which is correct. */ |
2620 | if (last_source_start_addr > text_offset) |
2621 | last_source_start_addr = text_offset; |
2622 | |
2623 | pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT (objfile)((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2623, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)); |
2624 | |
2625 | end_stabs (); |
2626 | } |
2627 | |
2628 | |
2629 | /* This handles a single symbol from the symbol-file, building symbols |
2630 | into a GDB symtab. It takes these arguments and an implicit argument. |
2631 | |
2632 | TYPE is the type field of the ".stab" symbol entry. |
2633 | DESC is the desc field of the ".stab" entry. |
2634 | VALU is the value field of the ".stab" entry. |
2635 | NAME is the symbol name, in our address space. |
2636 | SECTION_OFFSETS is a set of amounts by which the sections of this object |
2637 | file were relocated when it was loaded into memory. |
2638 | Note that these section_offsets are not the |
2639 | objfile->section_offsets but the pst->section_offsets. |
2640 | All symbols that refer |
2641 | to memory locations need to be offset by these amounts. |
2642 | OBJFILE is the object file from which we are reading symbols. |
2643 | It is used in end_symtab. */ |
2644 | |
2645 | void |
2646 | process_one_symbol (int type, int desc, CORE_ADDR valu, char *name, |
2647 | struct section_offsets *section_offsets, |
2648 | struct objfile *objfile) |
2649 | { |
2650 | struct context_stack *new; |
2651 | /* This remembers the address of the start of a function. It is used |
2652 | because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries are |
2653 | relative to the current function's start address. On systems |
2654 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, and is |
2655 | used to relocate these symbol types rather than SECTION_OFFSETS. */ |
2656 | static CORE_ADDR function_start_offset; |
2657 | |
2658 | /* This holds the address of the start of a function, without the system |
2659 | peculiarities of function_start_offset. */ |
2660 | static CORE_ADDR last_function_start; |
2661 | |
2662 | /* If this is nonzero, we've seen an N_SLINE since the start of the |
2663 | current function. We use this to tell us to move the first sline |
2664 | to the beginning of the function regardless of what its given |
2665 | value is. */ |
2666 | static int sline_found_in_function = 1; |
2667 | |
2668 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this source |
2669 | file. Used to detect the SunPRO solaris compiler. */ |
2670 | static int n_opt_found; |
2671 | |
2672 | /* The stab type used for the definition of the last function. |
2673 | N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */ |
2674 | static int function_stab_type = 0; |
2675 | |
2676 | if (!block_address_function_relative) |
2677 | /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the |
2678 | function start address, so just use the text offset. */ |
2679 | function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2679, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2679, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 2679, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
2680 | |
2681 | /* Something is wrong if we see real data before |
2682 | seeing a source file name. */ |
2683 | |
2684 | if (last_source_file == NULL((void*)0) && type != (unsigned char) N_SO) |
2685 | { |
2686 | /* Ignore any symbols which appear before an N_SO symbol. |
2687 | Currently no one puts symbols there, but we should deal |
2688 | gracefully with the case. A complain()t might be in order, |
2689 | but this should not be an error (). */ |
2690 | return; |
2691 | } |
2692 | |
2693 | switch (type) |
2694 | { |
2695 | case N_FUN: |
2696 | case N_FNAME: |
2697 | |
2698 | if (*name == '\000') |
2699 | { |
2700 | /* This N_FUN marks the end of a function. This closes off the |
2701 | current block. */ |
2702 | |
2703 | if (context_stack_depth <= 0) |
2704 | { |
2705 | lbrac_mismatch_complaint (symnum); |
2706 | break; |
2707 | } |
2708 | |
2709 | /* The following check is added before recording line 0 at |
2710 | end of function so as to handle hand-generated stabs |
2711 | which may have an N_FUN stabs at the end of the function, but |
2712 | no N_SLINE stabs. */ |
2713 | if (sline_found_in_function) |
2714 | record_line (current_subfile, 0, last_function_start + valu); |
2715 | |
2716 | within_function = 0; |
2717 | new = pop_context (); |
2718 | |
2719 | /* Make a block for the local symbols within. */ |
2720 | finish_block (new->name, &local_symbols, new->old_blocks, |
2721 | new->start_addr, new->start_addr + valu, |
2722 | objfile); |
2723 | |
2724 | /* May be switching to an assembler file which may not be using |
2725 | block relative stabs, so reset the offset. */ |
2726 | if (block_address_function_relative) |
2727 | function_start_offset = 0; |
2728 | |
2729 | break; |
2730 | } |
2731 | |
2732 | sline_found_in_function = 0; |
2733 | |
2734 | /* Relocate for dynamic loading */ |
2735 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2735, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2735, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 2735, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
2736 | valu = SMASH_TEXT_ADDRESS (valu)(gdbarch_smash_text_address (current_gdbarch, valu)); |
2737 | last_function_start = valu; |
2738 | |
2739 | goto define_a_symbol; |
2740 | |
2741 | case N_LBRAC: |
2742 | /* This "symbol" just indicates the start of an inner lexical |
2743 | context within a function. */ |
2744 | |
2745 | /* Ignore extra outermost context from SunPRO cc and acc. */ |
2746 | if (n_opt_found && desc == 1) |
2747 | break; |
2748 | |
2749 | if (block_address_function_relative) |
2750 | /* Relocate for Sun ELF acc fn-relative syms. */ |
2751 | valu += function_start_offset; |
2752 | else |
2753 | /* On most machines, the block addresses are relative to the |
2754 | N_SO, the linker did not relocate them (sigh). */ |
2755 | valu += last_source_start_addr; |
2756 | |
2757 | new = push_context (desc, valu); |
2758 | break; |
2759 | |
2760 | case N_RBRAC: |
2761 | /* This "symbol" just indicates the end of an inner lexical |
2762 | context that was started with N_LBRAC. */ |
2763 | |
2764 | /* Ignore extra outermost context from SunPRO cc and acc. */ |
2765 | if (n_opt_found && desc == 1) |
2766 | break; |
2767 | |
2768 | if (block_address_function_relative) |
2769 | /* Relocate for Sun ELF acc fn-relative syms. */ |
2770 | valu += function_start_offset; |
2771 | else |
2772 | /* On most machines, the block addresses are relative to the |
2773 | N_SO, the linker did not relocate them (sigh). */ |
2774 | valu += last_source_start_addr; |
2775 | |
2776 | if (context_stack_depth <= 0) |
2777 | { |
2778 | lbrac_mismatch_complaint (symnum); |
2779 | break; |
2780 | } |
2781 | |
2782 | new = pop_context (); |
2783 | if (desc != new->depth) |
2784 | lbrac_mismatch_complaint (symnum); |
2785 | |
2786 | /* Some compilers put the variable decls inside of an |
2787 | LBRAC/RBRAC block. This macro should be nonzero if this |
2788 | is true. DESC is N_DESC from the N_RBRAC symbol. |
2789 | GCC_P is true if we've detected the GCC_COMPILED_SYMBOL |
2790 | or the GCC2_COMPILED_SYMBOL. */ |
2791 | #if !defined (VARIABLES_INSIDE_BLOCK) |
2792 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p)0 0 |
2793 | #endif |
2794 | |
2795 | /* Can only use new->locals as local symbols here if we're in |
2796 | gcc or on a machine that puts them before the lbrack. */ |
2797 | if (!VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)0) |
2798 | { |
2799 | if (local_symbols != NULL((void*)0)) |
2800 | { |
2801 | /* GCC development snapshots from March to December of |
2802 | 2000 would output N_LSYM entries after N_LBRAC |
2803 | entries. As a consequence, these symbols are simply |
2804 | discarded. Complain if this is the case. Note that |
2805 | there are some compilers which legitimately put local |
2806 | symbols within an LBRAC/RBRAC block; this complaint |
2807 | might also help sort out problems in which |
2808 | VARIABLES_INSIDE_BLOCK is incorrectly defined. */ |
2809 | complaint (&symfile_complaints, |
2810 | "misplaced N_LBRAC entry; discarding local symbols which have no enclosing block"); |
2811 | } |
2812 | local_symbols = new->locals; |
2813 | } |
2814 | |
2815 | if (context_stack_depth |
2816 | > !VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)0) |
2817 | { |
2818 | /* This is not the outermost LBRAC...RBRAC pair in the function, |
2819 | its local symbols preceded it, and are the ones just recovered |
2820 | from the context stack. Define the block for them (but don't |
2821 | bother if the block contains no symbols. Should we complain |
2822 | on blocks without symbols? I can't think of any useful purpose |
2823 | for them). */ |
2824 | if (local_symbols != NULL((void*)0)) |
2825 | { |
2826 | /* Muzzle a compiler bug that makes end < start. (which |
2827 | compilers? Is this ever harmful?). */ |
2828 | if (new->start_addr > valu) |
2829 | { |
2830 | complaint (&symfile_complaints, |
2831 | "block start larger than block end"); |
2832 | new->start_addr = valu; |
2833 | } |
2834 | /* Make a block for the local symbols within. */ |
2835 | finish_block (0, &local_symbols, new->old_blocks, |
2836 | new->start_addr, valu, objfile); |
2837 | } |
2838 | } |
2839 | else |
2840 | { |
2841 | /* This is the outermost LBRAC...RBRAC pair. There is no |
2842 | need to do anything; leave the symbols that preceded it |
2843 | to be attached to the function's own block. We need to |
2844 | indicate that we just moved outside of the function. */ |
2845 | within_function = 0; |
2846 | } |
2847 | |
2848 | if (VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)0) |
2849 | /* Now pop locals of block just finished. */ |
2850 | local_symbols = new->locals; |
2851 | break; |
2852 | |
2853 | case N_FN0x1f: |
2854 | case N_FN_SEQ0x0C: |
2855 | /* This kind of symbol indicates the start of an object file. */ |
2856 | /* Relocate for dynamic loading */ |
2857 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2857, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2857, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 2857, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
2858 | break; |
2859 | |
2860 | case N_SO: |
2861 | /* This type of symbol indicates the start of data |
2862 | for one source file. |
2863 | Finish the symbol table of the previous source file |
2864 | (if any) and start accumulating a new symbol table. */ |
2865 | /* Relocate for dynamic loading */ |
2866 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2866, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2866, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 2866, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
2867 | |
2868 | n_opt_found = 0; |
2869 | |
2870 | if (last_source_file) |
2871 | { |
2872 | /* Check if previous symbol was also an N_SO (with some |
2873 | sanity checks). If so, that one was actually the directory |
2874 | name, and the current one is the real file name. |
2875 | Patch things up. */ |
2876 | if (previous_stab_code == (unsigned char) N_SO) |
2877 | { |
2878 | patch_subfile_names (current_subfile, name); |
2879 | break; /* Ignore repeated SOs */ |
2880 | } |
2881 | end_symtab (valu, objfile, SECT_OFF_TEXT (objfile)((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2881, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)); |
2882 | end_stabs (); |
2883 | } |
2884 | |
2885 | /* Null name means this just marks the end of text for this .o file. |
2886 | Don't start a new symtab in this case. */ |
2887 | if (*name == '\000') |
2888 | break; |
2889 | |
2890 | if (block_address_function_relative) |
2891 | function_start_offset = 0; |
2892 | |
2893 | start_stabs (); |
2894 | start_symtab (name, NULL((void*)0), valu); |
2895 | record_debugformat ("stabs"); |
2896 | break; |
2897 | |
2898 | case N_SOL: |
2899 | /* This type of symbol indicates the start of data for |
2900 | a sub-source-file, one whose contents were copied or |
2901 | included in the compilation of the main source file |
2902 | (whose name was given in the N_SO symbol.) */ |
2903 | /* Relocate for dynamic loading */ |
2904 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2904, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2904, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 2904, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
2905 | start_subfile (name, current_subfile->dirname); |
2906 | break; |
2907 | |
2908 | case N_BINCL: |
2909 | push_subfile (); |
2910 | add_new_header_file (name, valu); |
2911 | start_subfile (name, current_subfile->dirname); |
2912 | break; |
2913 | |
2914 | case N_EINCL: |
2915 | start_subfile (pop_subfile (), current_subfile->dirname); |
2916 | break; |
2917 | |
2918 | case N_EXCL: |
2919 | add_old_header_file (name, valu); |
2920 | break; |
2921 | |
2922 | case N_SLINE: |
2923 | /* This type of "symbol" really just records |
2924 | one line-number -- core-address correspondence. |
2925 | Enter it in the line list for this symbol table. */ |
2926 | |
2927 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
2928 | valu += function_start_offset; |
2929 | |
2930 | /* If this is the first SLINE note in the function, record it at |
2931 | the start of the function instead of at the listed location. */ |
2932 | if (within_function && sline_found_in_function == 0) |
2933 | { |
2934 | record_line (current_subfile, desc, last_function_start); |
2935 | sline_found_in_function = 1; |
2936 | } |
2937 | else |
2938 | record_line (current_subfile, desc, valu); |
2939 | break; |
2940 | |
2941 | case N_BCOMM: |
2942 | common_block_start (name, objfile); |
2943 | break; |
2944 | |
2945 | case N_ECOMM: |
2946 | common_block_end (objfile); |
2947 | break; |
2948 | |
2949 | /* The following symbol types need to have the appropriate offset added |
2950 | to their value; then we process symbol definitions in the name. */ |
2951 | |
2952 | case N_STSYM: /* Static symbol in data seg */ |
2953 | case N_LCSYM: /* Static symbol in BSS seg */ |
2954 | case N_ROSYM: /* Static symbol in Read-only data seg */ |
2955 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
2956 | Solaris2's stabs-in-elf makes *most* symbols relative |
2957 | but leaves a few absolute (at least for Solaris 2.1 and version |
2958 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on the fence. |
2959 | .stab "foo:S...",N_STSYM is absolute (ld relocates it) |
2960 | .stab "foo:V...",N_STSYM is relative (section base subtracted). |
2961 | This leaves us no choice but to search for the 'S' or 'V'... |
2962 | (or pass the whole section_offsets stuff down ONE MORE function |
2963 | call level, which we really don't want to do). */ |
2964 | { |
2965 | char *p; |
2966 | |
2967 | /* .o files and NLMs have non-zero text seg offsets, but don't need |
2968 | their static syms offset in this fashion. XXX - This is really a |
2969 | crock that should be fixed in the solib handling code so that I |
2970 | don't have to work around it here. */ |
2971 | |
2972 | if (!symfile_relocatable) |
2973 | { |
2974 | p = strchr (name, ':'); |
2975 | if (p != 0 && p[1] == 'S') |
2976 | { |
2977 | /* The linker relocated it. We don't want to add an |
2978 | elfstab_offset_sections-type offset, but we *do* want |
2979 | to add whatever solib.c passed to symbol_file_add as |
2980 | addr (this is known to affect SunOS4, and I suspect ELF |
2981 | too). Since elfstab_offset_sections currently does not |
2982 | muck with the text offset (there is no Ttext.text |
2983 | symbol), we can get addr from the text offset. If |
2984 | elfstab_offset_sections ever starts dealing with the |
2985 | text offset, and we still need to do this, we need to |
2986 | invent a SECT_OFF_ADDR_KLUDGE or something. */ |
2987 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2987, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2987, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 2987, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
2988 | goto define_a_symbol; |
2989 | } |
2990 | } |
2991 | /* Since it's not the kludge case, re-dispatch to the right handler. */ |
2992 | switch (type) |
2993 | { |
2994 | case N_STSYM: |
2995 | goto case_N_STSYM; |
2996 | case N_LCSYM: |
2997 | goto case_N_LCSYM; |
2998 | case N_ROSYM: |
2999 | goto case_N_ROSYM; |
3000 | default: |
3001 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", __LINE__3001, "failed internal consistency check"); |
3002 | } |
3003 | } |
3004 | |
3005 | case_N_STSYM: /* Static symbol in data seg */ |
3006 | case N_DSLINE: /* Source line number, data seg */ |
3007 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile))((((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3007, "sect_index_data not initialized"), -1) : objfile-> sect_index_data) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3007, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 3007, "sect_index_data not initialized" ), -1) : objfile->sect_index_data)]); |
3008 | goto define_a_symbol; |
3009 | |
3010 | case_N_LCSYM: /* Static symbol in BSS seg */ |
3011 | case N_BSLINE: /* Source line number, bss seg */ |
3012 | /* N_BROWS: overlaps with N_BSLINE */ |
3013 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile))(((objfile)->sect_index_bss == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3013, "Section index is uninitialized"), -1) : section_offsets ->offsets[(objfile)->sect_index_bss]); |
3014 | goto define_a_symbol; |
3015 | |
3016 | case_N_ROSYM: /* Static symbol in Read-only data seg */ |
3017 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA (objfile))((((objfile->sect_index_rodata == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3017, "sect_index_rodata not initialized"), -1) : objfile-> sect_index_rodata) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3017, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_rodata == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 3017, "sect_index_rodata not initialized" ), -1) : objfile->sect_index_rodata)]); |
3018 | goto define_a_symbol; |
3019 | |
3020 | case N_ENTRY: /* Alternate entry point */ |
3021 | /* Relocate for dynamic loading */ |
3022 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3022, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3022, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 3022, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
3023 | goto define_a_symbol; |
3024 | |
3025 | /* The following symbol types we don't know how to process. Handle |
3026 | them in a "default" way, but complain to people who care. */ |
3027 | default: |
3028 | case N_CATCH: /* Exception handler catcher */ |
3029 | case N_EHDECL: /* Exception handler name */ |
3030 | case N_PC: /* Global symbol in Pascal */ |
3031 | case N_M2C: /* Modula-2 compilation unit */ |
3032 | /* N_MOD2: overlaps with N_EHDECL */ |
3033 | case N_SCOPE: /* Modula-2 scope information */ |
3034 | case N_ECOML: /* End common (local name) */ |
3035 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ |
3036 | case N_NBDATA: |
3037 | case N_NBBSS: |
3038 | case N_NBSTS: |
3039 | case N_NBLCS: |
3040 | unknown_symtype_complaint (hex_string (type)); |
3041 | /* FALLTHROUGH */ |
3042 | |
3043 | /* The following symbol types don't need the address field relocated, |
3044 | since it is either unused, or is absolute. */ |
3045 | define_a_symbol: |
3046 | case N_GSYM: /* Global variable */ |
3047 | case N_NSYMS: /* Number of symbols (ultrix) */ |
3048 | case N_NOMAP: /* No map? (ultrix) */ |
3049 | case N_RSYM: /* Register variable */ |
3050 | case N_DEFD: /* Modula-2 GNU module dependency */ |
3051 | case N_SSYM: /* Struct or union element */ |
3052 | case N_LSYM: /* Local symbol in stack */ |
3053 | case N_PSYM: /* Parameter variable */ |
3054 | case N_LENG: /* Length of preceding symbol type */ |
3055 | if (name) |
3056 | { |
3057 | int deftype; |
3058 | char *colon_pos = strchr (name, ':'); |
3059 | if (colon_pos == NULL((void*)0)) |
3060 | deftype = '\0'; |
3061 | else |
3062 | deftype = colon_pos[1]; |
3063 | |
3064 | switch (deftype) |
3065 | { |
3066 | case 'f': |
3067 | case 'F': |
3068 | function_stab_type = type; |
3069 | |
3070 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
3071 | /* Deal with the SunPRO 3.0 compiler which omits the address |
3072 | from N_FUN symbols. */ |
3073 | if (type == N_FUN |
3074 | && valu == ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3074, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3074, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 3074, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)])) |
3075 | { |
3076 | CORE_ADDR minsym_valu = |
3077 | find_stab_function_addr (name, last_source_file, objfile); |
3078 | |
3079 | /* find_stab_function_addr will return 0 if the minimal |
3080 | symbol wasn't found. (Unfortunately, this might also |
3081 | be a valid address.) Anyway, if it *does* return 0, |
3082 | it is likely that the value was set correctly to begin |
3083 | with... */ |
3084 | if (minsym_valu != 0) |
3085 | valu = minsym_valu; |
3086 | } |
3087 | #endif |
3088 | |
3089 | if (block_address_function_relative) |
3090 | /* For Solaris 2.0 compilers, the block addresses and |
3091 | N_SLINE's are relative to the start of the |
3092 | function. On normal systems, and when using gcc on |
3093 | Solaris 2.0, these addresses are just absolute, or |
3094 | relative to the N_SO, depending on |
3095 | BLOCK_ADDRESS_ABSOLUTE. */ |
3096 | function_start_offset = valu; |
3097 | |
3098 | within_function = 1; |
3099 | |
3100 | if (context_stack_depth > 1) |
3101 | { |
3102 | complaint (&symfile_complaints, |
3103 | "unmatched N_LBRAC before symtab pos %d", symnum); |
3104 | break; |
3105 | } |
3106 | |
3107 | if (context_stack_depth > 0) |
3108 | { |
3109 | new = pop_context (); |
3110 | /* Make a block for the local symbols within. */ |
3111 | finish_block (new->name, &local_symbols, new->old_blocks, |
3112 | new->start_addr, valu, objfile); |
3113 | } |
3114 | |
3115 | new = push_context (0, valu); |
3116 | new->name = define_symbol (valu, name, desc, type, objfile); |
3117 | break; |
3118 | |
3119 | default: |
3120 | define_symbol (valu, name, desc, type, objfile); |
3121 | break; |
3122 | } |
3123 | } |
3124 | break; |
3125 | |
3126 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
3127 | for a bunch of other flags, too. Someday we may parse their |
3128 | flags; for now we ignore theirs and hope they'll ignore ours. */ |
3129 | case N_OPT: /* Solaris 2: Compiler options */ |
3130 | if (name) |
3131 | { |
3132 | if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL"gcc2_compiled.") == 0) |
3133 | { |
3134 | processing_gcc_compilation = 2; |
3135 | #if 0 /* Works, but is experimental. -fnf */ |
3136 | /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't |
3137 | know whether it will use the old style or v3 mangling. */ |
3138 | if (AUTO_DEMANGLING(((int) current_demangling_style) & (1 << 8))) |
3139 | { |
3140 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING"gnu"); |
3141 | } |
3142 | #endif |
3143 | } |
3144 | else |
3145 | n_opt_found = 1; |
3146 | } |
3147 | break; |
3148 | |
3149 | case N_MAIN: /* Name of main routine. */ |
3150 | /* FIXME: If one has a symbol file with N_MAIN and then replaces |
3151 | it with a symbol file with "main" and without N_MAIN. I'm |
3152 | not sure exactly what rule to follow but probably something |
3153 | like: N_MAIN takes precedence over "main" no matter what |
3154 | objfile it is in; If there is more than one N_MAIN, choose |
3155 | the one in the symfile_objfile; If there is more than one |
3156 | N_MAIN within a given objfile, complain() and choose |
3157 | arbitrarily. (kingdon) */ |
3158 | if (name != NULL((void*)0)) |
3159 | set_main_name (name); |
3160 | break; |
3161 | |
3162 | /* The following symbol types can be ignored. */ |
3163 | case N_OBJ: /* Solaris 2: Object file dir and name */ |
3164 | case N_PATCH: /* Solaris2: Patch Run Time Checker. */ |
3165 | /* N_UNDF: Solaris 2: file separator mark */ |
3166 | /* N_UNDF: -- we will never encounter it, since we only process one |
3167 | file's symbols at once. */ |
3168 | case N_ENDM: /* Solaris 2: End of module */ |
3169 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
3170 | break; |
3171 | } |
3172 | |
3173 | /* '#' is a GNU C extension to allow one symbol to refer to another |
3174 | related symbol. |
3175 | |
3176 | Generally this is used so that an alias can refer to its main |
3177 | symbol. */ |
3178 | if (name[0] == '#') |
3179 | { |
3180 | /* Initialize symbol reference names and determine if this is |
3181 | a definition. If symbol reference is being defined, go |
3182 | ahead and add it. Otherwise, just return sym. */ |
3183 | |
3184 | char *s = name; |
3185 | int refnum; |
3186 | |
3187 | /* If this stab defines a new reference ID that is not on the |
3188 | reference list, then put it on the reference list. |
3189 | |
3190 | We go ahead and advance NAME past the reference, even though |
3191 | it is not strictly necessary at this time. */ |
3192 | refnum = symbol_reference_defined (&s); |
3193 | if (refnum >= 0) |
3194 | if (!ref_search (refnum)) |
3195 | ref_add (refnum, 0, name, valu); |
3196 | name = s; |
3197 | } |
3198 | |
3199 | |
3200 | previous_stab_code = type; |
3201 | } |
3202 | |
3203 | /* FIXME: The only difference between this and elfstab_build_psymtabs |
3204 | is the call to install_minimal_symbols for elf, and the support for |
3205 | split sections. If the differences are really that small, the code |
3206 | should be shared. */ |
3207 | |
3208 | /* Scan and build partial symbols for an coff symbol file. |
3209 | The coff file has already been processed to get its minimal symbols. |
3210 | |
3211 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read |
3212 | rolled into one. |
3213 | |
3214 | OBJFILE is the object file we are reading symbols from. |
3215 | ADDR is the address relative to which the symbols are (e.g. |
3216 | the base address of the text segment). |
3217 | MAINLINE is true if we are reading the main symbol |
3218 | table (as opposed to a shared lib or dynamically loaded file). |
3219 | TEXTADDR is the address of the text section. |
3220 | TEXTSIZE is the size of the text section. |
3221 | STABSECTS is the list of .stab sections in OBJFILE. |
3222 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
3223 | .stabstr section exists. |
3224 | |
3225 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, |
3226 | adjusted for coff details. */ |
3227 | |
3228 | void |
3229 | coffstab_build_psymtabs (struct objfile *objfile, int mainline, |
3230 | CORE_ADDR textaddr, unsigned int textsize, |
3231 | struct stab_section_list *stabsects, |
3232 | file_ptr stabstroffset, unsigned int stabstrsize) |
3233 | { |
3234 | int val; |
3235 | bfd *sym_bfd = objfile->obfd; |
3236 | char *name = bfd_get_filename (sym_bfd)((char *) (sym_bfd)->filename); |
3237 | struct dbx_symfile_info *info; |
3238 | unsigned int stabsize; |
3239 | |
3240 | /* There is already a dbx_symfile_info allocated by our caller. |
3241 | It might even contain some info from the coff symtab to help us. */ |
3242 | info = objfile->sym_stab_info; |
3243 | |
3244 | DBX_TEXT_ADDR (objfile)(((objfile)->sym_stab_info)->text_addr) = textaddr; |
3245 | DBX_TEXT_SIZE (objfile)(((objfile)->sym_stab_info)->text_size) = textsize; |
3246 | |
3247 | #define COFF_STABS_SYMBOL_SIZE12 12 /* XXX FIXME XXX */ |
3248 | DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size) = COFF_STABS_SYMBOL_SIZE12; |
3249 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) = stabstrsize; |
3250 | |
3251 | if (stabstrsize > bfd_get_size (sym_bfd)) |
3252 | error ("ridiculous string table size: %d bytes", stabstrsize); |
3253 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab) = (char *) |
3254 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1)__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (stabstrsize + 1)); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack * __o1 = (__h); void *value; value = (void *) __o1->object_base ; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char * ) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask )) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1-> next_free = __o1->chunk_limit; __o1->object_base = __o1 ->next_free; value; }); }); |
3255 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1)(objfile -> stats.sz_strtab += stabstrsize + 1); |
3256 | |
3257 | /* Now read in the string table in one big gulp. */ |
3258 | |
3259 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET0); |
3260 | if (val < 0) |
3261 | perror_with_name (name); |
3262 | val = bfd_bread (DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab), stabstrsize, sym_bfd); |
3263 | if (val != stabstrsize) |
3264 | perror_with_name (name); |
3265 | |
3266 | stabsread_new_init (); |
3267 | buildsym_new_init (); |
3268 | free_header_files (); |
3269 | init_header_files (); |
3270 | |
3271 | processing_acc_compilation = 1; |
3272 | |
3273 | /* In a coff file, we've already installed the minimal symbols that came |
3274 | from the coff (non-stab) symbol table, so always act like an |
3275 | incremental load here. */ |
3276 | if (stabsects->next == NULL((void*)0)) |
3277 | { |
3278 | stabsize = bfd_section_size (sym_bfd, stabsects->section)((stabsects->section)->_raw_size); |
3279 | DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount) = stabsize / DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size); |
3280 | DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset) = stabsects->section->filepos; |
3281 | } |
3282 | else |
3283 | { |
3284 | struct stab_section_list *stabsect; |
3285 | |
3286 | DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount) = 0; |
3287 | for (stabsect = stabsects; stabsect != NULL((void*)0); stabsect = stabsect->next) |
3288 | { |
3289 | stabsize = bfd_section_size (sym_bfd, stabsect->section)((stabsect->section)->_raw_size); |
3290 | DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount) += stabsize / DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size); |
3291 | } |
3292 | |
3293 | DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset) = stabsects->section->filepos; |
3294 | |
3295 | symbuf_sections = stabsects->next; |
3296 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section)((stabsects->section)->_raw_size); |
3297 | symbuf_read = 0; |
3298 | } |
3299 | |
3300 | dbx_symfile_read (objfile, 0); |
3301 | } |
3302 | |
3303 | /* Scan and build partial symbols for an ELF symbol file. |
3304 | This ELF file has already been processed to get its minimal symbols. |
3305 | |
3306 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read |
3307 | rolled into one. |
3308 | |
3309 | OBJFILE is the object file we are reading symbols from. |
3310 | ADDR is the address relative to which the symbols are (e.g. |
3311 | the base address of the text segment). |
3312 | MAINLINE is true if we are reading the main symbol |
3313 | table (as opposed to a shared lib or dynamically loaded file). |
3314 | STABSECT is the BFD section information for the .stab section. |
3315 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
3316 | .stabstr section exists. |
3317 | |
3318 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, |
3319 | adjusted for elf details. */ |
3320 | |
3321 | void |
3322 | elfstab_build_psymtabs (struct objfile *objfile, int mainline, |
3323 | asection *stabsect, |
3324 | file_ptr stabstroffset, unsigned int stabstrsize) |
3325 | { |
3326 | int val; |
3327 | bfd *sym_bfd = objfile->obfd; |
3328 | char *name = bfd_get_filename (sym_bfd)((char *) (sym_bfd)->filename); |
3329 | struct dbx_symfile_info *info; |
3330 | struct cleanup *back_to = NULL((void*)0); |
3331 | |
3332 | /* There is already a dbx_symfile_info allocated by our caller. |
3333 | It might even contain some info from the ELF symtab to help us. */ |
3334 | info = objfile->sym_stab_info; |
Value stored to 'info' is never read | |
3335 | |
3336 | /* Find the first and last text address. dbx_symfile_read seems to |
3337 | want this. */ |
3338 | find_text_range (sym_bfd, objfile); |
3339 | |
3340 | #define ELF_STABS_SYMBOL_SIZE12 12 /* XXX FIXME XXX */ |
3341 | DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size) = ELF_STABS_SYMBOL_SIZE12; |
3342 | DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount) |
3343 | = bfd_section_size (objfile->obfd, stabsect)((stabsect)->_raw_size) / DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size); |
3344 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) = stabstrsize; |
3345 | DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset) = stabsect->filepos; |
3346 | DBX_STAB_SECTION (objfile)(((objfile)->sym_stab_info)->stab_section) = stabsect; |
3347 | |
3348 | if (stabstrsize > bfd_get_size (sym_bfd)) |
3349 | error ("ridiculous string table size: %d bytes", stabstrsize); |
3350 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab) = (char *) |
3351 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1)__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (stabstrsize + 1)); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack * __o1 = (__h); void *value; value = (void *) __o1->object_base ; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char * ) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask )) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1-> next_free = __o1->chunk_limit; __o1->object_base = __o1 ->next_free; value; }); }); |
3352 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1)(objfile -> stats.sz_strtab += stabstrsize + 1); |
3353 | |
3354 | /* Now read in the string table in one big gulp. */ |
3355 | |
3356 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET0); |
3357 | if (val < 0) |
3358 | perror_with_name (name); |
3359 | val = bfd_bread (DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab), stabstrsize, sym_bfd); |
3360 | if (val != stabstrsize) |
3361 | perror_with_name (name); |
3362 | |
3363 | stabsread_new_init (); |
3364 | buildsym_new_init (); |
3365 | free_header_files (); |
3366 | init_header_files (); |
3367 | |
3368 | processing_acc_compilation = 1; |
3369 | |
3370 | symbuf_read = 0; |
3371 | symbuf_left = bfd_section_size (objfile->obfd, stabsect)((stabsect)->_raw_size); |
3372 | stabs_data = symfile_relocate_debug_section (objfile->obfd, stabsect, NULL((void*)0)); |
3373 | if (stabs_data) |
3374 | back_to = make_cleanup (free_current_contents, (void *) &stabs_data); |
3375 | |
3376 | /* In an elf file, we've already installed the minimal symbols that came |
3377 | from the elf (non-stab) symbol table, so always act like an |
3378 | incremental load here. dbx_symfile_read should not generate any new |
3379 | minimal symbols, since we will have already read the ELF dynamic symbol |
3380 | table and normal symbol entries won't be in the ".stab" section; but in |
3381 | case it does, it will install them itself. */ |
3382 | dbx_symfile_read (objfile, 0); |
3383 | |
3384 | if (back_to) |
3385 | do_cleanups (back_to); |
3386 | } |
3387 | |
3388 | /* Scan and build partial symbols for a file with special sections for stabs |
3389 | and stabstrings. The file has already been processed to get its minimal |
3390 | symbols, and any other symbols that might be necessary to resolve GSYMs. |
3391 | |
3392 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read |
3393 | rolled into one. |
3394 | |
3395 | OBJFILE is the object file we are reading symbols from. |
3396 | ADDR is the address relative to which the symbols are (e.g. the base address |
3397 | of the text segment). |
3398 | MAINLINE is true if we are reading the main symbol table (as opposed to a |
3399 | shared lib or dynamically loaded file). |
3400 | STAB_NAME is the name of the section that contains the stabs. |
3401 | STABSTR_NAME is the name of the section that contains the stab strings. |
3402 | |
3403 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read. */ |
3404 | |
3405 | void |
3406 | stabsect_build_psymtabs (struct objfile *objfile, int mainline, char *stab_name, |
3407 | char *stabstr_name, char *text_name) |
3408 | { |
3409 | int val; |
3410 | bfd *sym_bfd = objfile->obfd; |
3411 | char *name = bfd_get_filename (sym_bfd)((char *) (sym_bfd)->filename); |
3412 | asection *stabsect; |
3413 | asection *stabstrsect; |
3414 | asection *text_sect; |
3415 | |
3416 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); |
3417 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); |
3418 | |
3419 | if (!stabsect) |
3420 | return; |
3421 | |
3422 | if (!stabstrsect) |
3423 | error ("stabsect_build_psymtabs: Found stabs (%s), but not string section (%s)", |
3424 | stab_name, stabstr_name); |
3425 | |
3426 | objfile->sym_stab_info = (struct dbx_symfile_info *) |
3427 | xmalloc (sizeof (struct dbx_symfile_info)); |
3428 | memset (objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); |
3429 | |
3430 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); |
3431 | if (!text_sect) |
3432 | error ("Can't find %s section in symbol file", text_name); |
3433 | DBX_TEXT_ADDR (objfile)(((objfile)->sym_stab_info)->text_addr) = bfd_section_vma (sym_bfd, text_sect)((text_sect)->vma); |
3434 | DBX_TEXT_SIZE (objfile)(((objfile)->sym_stab_info)->text_size) = bfd_section_size (sym_bfd, text_sect)((text_sect)->_raw_size); |
3435 | |
3436 | DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size) = sizeof (struct external_nlist); |
3437 | DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount) = bfd_section_size (sym_bfd, stabsect)((stabsect)->_raw_size) |
3438 | / DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size); |
3439 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) = bfd_section_size (sym_bfd, stabstrsect)((stabstrsect)->_raw_size); |
3440 | DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset) = stabsect->filepos; /* XXX - FIXME: POKING INSIDE BFD DATA STRUCTURES */ |
3441 | |
3442 | if (DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) > bfd_get_size (sym_bfd)) |
3443 | error ("ridiculous string table size: %d bytes", DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size)); |
3444 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab) = (char *) |
3445 | obstack_alloc (&objfile->objfile_obstack, DBX_STRINGTAB_SIZE (objfile) + 1)__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( ((((objfile)->sym_stab_info)->stringtab_size) + 1)); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }) ; __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); }); |
3446 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1)(objfile -> stats.sz_strtab += (((objfile)->sym_stab_info )->stringtab_size) + 1); |
3447 | |
3448 | /* Now read in the string table in one big gulp. */ |
3449 | |
3450 | val = bfd_get_section_contents (sym_bfd, /* bfd */ |
3451 | stabstrsect, /* bfd section */ |
3452 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab), /* input buffer */ |
3453 | 0, /* offset into section */ |
3454 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size)); /* amount to read */ |
3455 | |
3456 | if (!val) |
3457 | perror_with_name (name); |
3458 | |
3459 | stabsread_new_init (); |
3460 | buildsym_new_init (); |
3461 | free_header_files (); |
3462 | init_header_files (); |
3463 | |
3464 | /* Now, do an incremental load */ |
3465 | |
3466 | processing_acc_compilation = 1; |
3467 | dbx_symfile_read (objfile, 0); |
3468 | } |
3469 | |
3470 | static struct sym_fns aout_sym_fns = |
3471 | { |
3472 | bfd_target_aout_flavour, |
3473 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
3474 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ |
3475 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ |
3476 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ |
3477 | default_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
3478 | NULL((void*)0) /* next: pointer to next struct sym_fns */ |
3479 | }; |
3480 | |
3481 | void |
3482 | _initialize_dbxread (void) |
3483 | { |
3484 | add_symtab_fns (&aout_sym_fns); |
3485 | } |