Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
b6ba6518 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9ab9195f | 3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004. |
c906108c SS |
4 | Free Software Foundation, Inc. |
5 | ||
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
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. | |
c906108c | 12 | |
c5aa993b JM |
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. | |
c906108c | 17 | |
c5aa993b JM |
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. */ | |
c906108c SS |
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 | ||
1f04aa62 | 40 | #if defined(__CYGNUSCLIB__) |
c906108c SS |
41 | #include <sys/types.h> |
42 | #include <fcntl.h> | |
43 | #endif | |
44 | ||
04ea0df1 | 45 | #include "gdb_obstack.h" |
c906108c | 46 | #include "gdb_stat.h" |
c906108c SS |
47 | #include "symtab.h" |
48 | #include "breakpoint.h" | |
c906108c SS |
49 | #include "target.h" |
50 | #include "gdbcore.h" /* for bfd stuff */ | |
c5aa993b | 51 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
c906108c SS |
52 | #include "objfiles.h" |
53 | #include "buildsym.h" | |
54 | #include "stabsread.h" | |
55 | #include "gdb-stabs.h" | |
56 | #include "demangle.h" | |
c906108c | 57 | #include "complaints.h" |
015a42b4 | 58 | #include "cp-abi.h" |
7c8a5605 | 59 | #include "gdb_assert.h" |
c906108c SS |
60 | |
61 | #include "aout/aout64.h" | |
62 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */ | |
c906108c | 63 | \f |
c5aa993b | 64 | |
c906108c SS |
65 | /* We put a pointer to this structure in the read_symtab_private field |
66 | of the psymtab. */ | |
67 | ||
c5aa993b JM |
68 | struct symloc |
69 | { | |
c5aa993b JM |
70 | /* Offset within the file symbol table of first local symbol for this |
71 | file. */ | |
c906108c | 72 | |
c5aa993b | 73 | int ldsymoff; |
c906108c | 74 | |
c5aa993b JM |
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. */ | |
c906108c | 80 | |
c5aa993b | 81 | int ldsymlen; |
c906108c | 82 | |
c5aa993b | 83 | /* The size of each symbol in the symbol file (in external form). */ |
c906108c | 84 | |
c5aa993b | 85 | int symbol_size; |
c906108c | 86 | |
c5aa993b JM |
87 | /* Further information needed to locate the symbols if they are in |
88 | an ELF file. */ | |
c906108c | 89 | |
c5aa993b JM |
90 | int symbol_offset; |
91 | int string_offset; | |
92 | int file_string_offset; | |
93 | }; | |
c906108c SS |
94 | |
95 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) | |
96 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
97 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) | |
98 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
99 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
100 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
101 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
c906108c | 102 | \f |
c5aa993b | 103 | |
c906108c SS |
104 | /* Remember what we deduced to be the source language of this psymtab. */ |
105 | ||
106 | static enum language psymtab_language = language_unknown; | |
107 | ||
c906108c SS |
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 | \f | |
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 | ||
23136709 KB |
161 | static void |
162 | unknown_symtype_complaint (const char *arg1) | |
163 | { | |
164 | complaint (&symfile_complaints, "unknown symbol type %s", arg1); | |
165 | } | |
c906108c | 166 | |
23136709 KB |
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 | } | |
c906108c | 173 | |
23136709 KB |
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 | } | |
1f077a3e | 181 | |
7a292a7a SS |
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 | |
c5aa993b | 192 | find_text_range (bfd * sym_bfd, struct objfile *objfile) |
7a292a7a SS |
193 | { |
194 | asection *sec; | |
195 | int found_any = 0; | |
b9179dbc EZ |
196 | CORE_ADDR start = 0; |
197 | CORE_ADDR end = 0; | |
c5aa993b | 198 | |
7a292a7a SS |
199 | for (sec = sym_bfd->sections; sec; sec = sec->next) |
200 | if (bfd_get_section_flags (sym_bfd, sec) & SEC_CODE) | |
201 | { | |
202 | CORE_ADDR sec_start = bfd_section_vma (sym_bfd, sec); | |
203 | CORE_ADDR sec_end = sec_start + bfd_section_size (sym_bfd, sec); | |
204 | ||
205 | if (found_any) | |
206 | { | |
c5aa993b JM |
207 | if (sec_start < start) |
208 | start = sec_start; | |
209 | if (sec_end > end) | |
210 | end = sec_end; | |
7a292a7a SS |
211 | } |
212 | else | |
213 | { | |
214 | start = sec_start; | |
215 | end = sec_end; | |
216 | } | |
217 | ||
218 | found_any = 1; | |
219 | } | |
220 | ||
c5aa993b | 221 | if (!found_any) |
7a292a7a SS |
222 | error ("Can't find any code sections in symbol file"); |
223 | ||
224 | DBX_TEXT_ADDR (objfile) = start; | |
225 | DBX_TEXT_SIZE (objfile) = end - start; | |
226 | } | |
c5aa993b | 227 | \f |
7a292a7a SS |
228 | |
229 | ||
c906108c SS |
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 | ||
a14ed312 | 249 | extern void _initialize_dbxread (void); |
392a587b | 250 | |
a14ed312 | 251 | static void read_ofile_symtab (struct partial_symtab *); |
c906108c | 252 | |
a14ed312 | 253 | static void dbx_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 254 | |
a14ed312 | 255 | static void dbx_psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 256 | |
a14ed312 | 257 | static void read_dbx_dynamic_symtab (struct objfile *objfile); |
c906108c | 258 | |
a14ed312 | 259 | static void read_dbx_symtab (struct objfile *); |
c906108c | 260 | |
a14ed312 | 261 | static void free_bincl_list (struct objfile *); |
c906108c | 262 | |
a14ed312 | 263 | static struct partial_symtab *find_corresponding_bincl_psymtab (char *, int); |
c906108c | 264 | |
a14ed312 | 265 | static void add_bincl_to_list (struct partial_symtab *, char *, int); |
c906108c | 266 | |
a14ed312 | 267 | static void init_bincl_list (int, struct objfile *); |
c906108c | 268 | |
a14ed312 | 269 | static char *dbx_next_symbol_text (struct objfile *); |
c906108c | 270 | |
a14ed312 | 271 | static void fill_symbuf (bfd *); |
c906108c | 272 | |
a14ed312 | 273 | static void dbx_symfile_init (struct objfile *); |
c906108c | 274 | |
a14ed312 | 275 | static void dbx_new_init (struct objfile *); |
c906108c | 276 | |
a14ed312 | 277 | static void dbx_symfile_read (struct objfile *, int); |
c906108c | 278 | |
a14ed312 | 279 | static void dbx_symfile_finish (struct objfile *); |
c906108c | 280 | |
a14ed312 | 281 | static void record_minimal_symbol (char *, CORE_ADDR, int, struct objfile *); |
c906108c | 282 | |
a14ed312 | 283 | static void add_new_header_file (char *, int); |
c906108c | 284 | |
a14ed312 | 285 | static void add_old_header_file (char *, int); |
c906108c | 286 | |
a14ed312 | 287 | static void add_this_object_header_file (int); |
c906108c | 288 | |
a14ed312 KB |
289 | static struct partial_symtab *start_psymtab (struct objfile *, char *, |
290 | CORE_ADDR, int, | |
291 | struct partial_symbol **, | |
292 | struct partial_symbol **); | |
d4f3574e | 293 | |
c906108c SS |
294 | /* Free up old header file tables */ |
295 | ||
d3d55eeb | 296 | void |
fba45db2 | 297 | free_header_files (void) |
c906108c SS |
298 | { |
299 | if (this_object_header_files) | |
300 | { | |
b8c9b27d | 301 | xfree (this_object_header_files); |
c906108c SS |
302 | this_object_header_files = NULL; |
303 | } | |
304 | n_allocated_this_object_header_files = 0; | |
305 | } | |
306 | ||
307 | /* Allocate new header file tables */ | |
308 | ||
d3d55eeb | 309 | void |
fba45db2 | 310 | init_header_files (void) |
c906108c SS |
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 | |
fba45db2 | 320 | add_this_object_header_file (int i) |
c906108c SS |
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, | |
c5aa993b | 327 | n_allocated_this_object_header_files * sizeof (int)); |
c906108c SS |
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 | |
fba45db2 | 339 | add_old_header_file (char *name, int instance) |
c906108c | 340 | { |
52f0bd74 AC |
341 | struct header_file *p = HEADER_FILES (current_objfile); |
342 | int i; | |
c906108c SS |
343 | |
344 | for (i = 0; i < N_HEADER_FILES (current_objfile); i++) | |
6314a349 | 345 | if (strcmp (p[i].name, name) == 0 && instance == p[i].instance) |
c906108c SS |
346 | { |
347 | add_this_object_header_file (i); | |
348 | return; | |
349 | } | |
23136709 | 350 | repeated_header_complaint (name, symnum); |
c906108c SS |
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 | |
fba45db2 | 365 | add_new_header_file (char *name, int instance) |
c906108c | 366 | { |
52f0bd74 AC |
367 | int i; |
368 | struct header_file *hfile; | |
c906108c SS |
369 | |
370 | /* Make sure there is room for one more header file. */ | |
371 | ||
372 | i = N_ALLOCATED_HEADER_FILES (current_objfile); | |
373 | ||
374 | if (N_HEADER_FILES (current_objfile) == i) | |
375 | { | |
376 | if (i == 0) | |
377 | { | |
378 | N_ALLOCATED_HEADER_FILES (current_objfile) = 10; | |
379 | HEADER_FILES (current_objfile) = (struct header_file *) | |
380 | xmalloc (10 * sizeof (struct header_file)); | |
381 | } | |
382 | else | |
383 | { | |
384 | i *= 2; | |
385 | N_ALLOCATED_HEADER_FILES (current_objfile) = i; | |
386 | HEADER_FILES (current_objfile) = (struct header_file *) | |
387 | xrealloc ((char *) HEADER_FILES (current_objfile), | |
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)++; | |
395 | hfile = HEADER_FILES (current_objfile) + i; | |
c5aa993b | 396 | hfile->name = savestring (name, strlen (name)); |
c906108c SS |
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 ** | |
fba45db2 | 408 | explicit_lookup_type (int real_filenum, int index) |
c906108c | 409 | { |
52f0bd74 | 410 | struct header_file *f = &HEADER_FILES (current_objfile)[real_filenum]; |
c906108c SS |
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], | |
c5aa993b | 418 | '\0', f->length * sizeof (struct type *) / 2); |
c906108c SS |
419 | } |
420 | return &f->vector[index]; | |
421 | } | |
422 | #endif | |
423 | \f | |
424 | static void | |
fba45db2 KB |
425 | record_minimal_symbol (char *name, CORE_ADDR address, int type, |
426 | struct objfile *objfile) | |
c906108c SS |
427 | { |
428 | enum minimal_symbol_type ms_type; | |
429 | int section; | |
430 | asection *bfd_section; | |
431 | ||
432 | switch (type) | |
433 | { | |
434 | case N_TEXT | N_EXT: | |
435 | ms_type = mst_text; | |
b8fbeb18 | 436 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
437 | bfd_section = DBX_TEXT_SECTION (objfile); |
438 | break; | |
439 | case N_DATA | N_EXT: | |
440 | ms_type = mst_data; | |
b8fbeb18 | 441 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
442 | bfd_section = DBX_DATA_SECTION (objfile); |
443 | break; | |
444 | case N_BSS | N_EXT: | |
445 | ms_type = mst_bss; | |
b8fbeb18 | 446 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
447 | bfd_section = DBX_BSS_SECTION (objfile); |
448 | break; | |
449 | case N_ABS | N_EXT: | |
450 | ms_type = mst_abs; | |
451 | section = -1; | |
452 | bfd_section = NULL; | |
453 | break; | |
454 | #ifdef N_SETV | |
455 | case N_SETV | N_EXT: | |
456 | ms_type = mst_data; | |
b8fbeb18 | 457 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
458 | bfd_section = DBX_DATA_SECTION (objfile); |
459 | break; | |
460 | case N_SETV: | |
461 | /* I don't think this type actually exists; since a N_SETV is the result | |
c5aa993b JM |
462 | of going over many .o files, it doesn't make sense to have one |
463 | file local. */ | |
c906108c | 464 | ms_type = mst_file_data; |
b8fbeb18 | 465 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
466 | bfd_section = DBX_DATA_SECTION (objfile); |
467 | break; | |
468 | #endif | |
469 | case N_TEXT: | |
470 | case N_NBTEXT: | |
471 | case N_FN: | |
472 | case N_FN_SEQ: | |
473 | ms_type = mst_file_text; | |
b8fbeb18 | 474 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
475 | bfd_section = DBX_TEXT_SECTION (objfile); |
476 | break; | |
477 | case N_DATA: | |
478 | ms_type = mst_file_data; | |
479 | ||
480 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
c5aa993b JM |
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 '_'. */ | |
cb137aa5 | 484 | if (name[8] == 'C' && DEPRECATED_STREQ ("__DYNAMIC", name)) |
c906108c SS |
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)) | |
491 | ++tempstring; | |
015a42b4 | 492 | if (is_vtable_name (tempstring)) |
c906108c SS |
493 | ms_type = mst_data; |
494 | } | |
b8fbeb18 | 495 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
496 | bfd_section = DBX_DATA_SECTION (objfile); |
497 | break; | |
498 | case N_BSS: | |
499 | ms_type = mst_file_bss; | |
b8fbeb18 | 500 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
501 | bfd_section = DBX_BSS_SECTION (objfile); |
502 | break; | |
503 | default: | |
504 | ms_type = mst_unknown; | |
505 | section = -1; | |
506 | bfd_section = NULL; | |
507 | break; | |
c5aa993b | 508 | } |
c906108c SS |
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, section, bfd_section, objfile); | |
516 | } | |
517 | \f | |
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 | ||
c906108c SS |
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 | |
9df3df99 | 527 | dbx_symfile_read (struct objfile *objfile, int mainline) |
c906108c SS |
528 | { |
529 | bfd *sym_bfd; | |
530 | int val; | |
531 | struct cleanup *back_to; | |
532 | ||
c906108c SS |
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) & HAS_RELOC; | |
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), "elf", 3)) | |
547 | || (0 == strncmp (bfd_get_target (sym_bfd), "som", 3)) | |
548 | || (0 == strncmp (bfd_get_target (sym_bfd), "coff", 4)) | |
549 | || (0 == strncmp (bfd_get_target (sym_bfd), "pe", 2)) | |
c2d11a7d | 550 | || (0 == strncmp (bfd_get_target (sym_bfd), "epoc-pe", 7)) |
c906108c SS |
551 | || (0 == strncmp (bfd_get_target (sym_bfd), "nlm", 3))); |
552 | ||
553 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); | |
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 | |
ef96bde8 EZ |
559 | || (objfile->global_psymbols.size == 0 |
560 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
561 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); |
562 | ||
563 | symbol_size = DBX_SYMBOL_SIZE (objfile); | |
564 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
565 | ||
566 | free_pending_blocks (); | |
a0b3c4fd | 567 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c SS |
568 | |
569 | init_minimal_symbol_collection (); | |
56e290f4 | 570 | make_cleanup_discard_minimal_symbols (); |
c906108c | 571 | |
d4f3574e | 572 | /* Read stabs data from executable file and define symbols. */ |
c906108c | 573 | |
d4f3574e | 574 | read_dbx_symtab (objfile); |
c906108c SS |
575 | |
576 | /* Add the dynamic symbols. */ | |
577 | ||
96baa820 | 578 | read_dbx_dynamic_symtab (objfile); |
c906108c SS |
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 | |
fba45db2 | 593 | dbx_new_init (struct objfile *ignore) |
c906108c SS |
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 | ||
c5aa993b | 614 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
c906108c SS |
615 | |
616 | static void | |
fba45db2 | 617 | dbx_symfile_init (struct objfile *objfile) |
c906108c SS |
618 | { |
619 | int val; | |
620 | bfd *sym_bfd = objfile->obfd; | |
621 | char *name = bfd_get_filename (sym_bfd); | |
622 | asection *text_sect; | |
623 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; | |
624 | ||
625 | /* Allocate struct to keep track of the symfile */ | |
0a6ddd08 | 626 | objfile->deprecated_sym_stab_info = (struct dbx_symfile_info *) |
7936743b | 627 | xmalloc (sizeof (struct dbx_symfile_info)); |
0a6ddd08 | 628 | memset (objfile->deprecated_sym_stab_info, 0, sizeof (struct dbx_symfile_info)); |
c906108c SS |
629 | |
630 | DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
631 | DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data"); | |
632 | DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss"); | |
633 | ||
634 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
635 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) | |
636 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
637 | ||
638 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
639 | ||
640 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; | |
c5aa993b | 641 | |
c906108c SS |
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) = bfd_section_vma (sym_bfd, text_sect); | |
646 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
647 | ||
648 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); | |
649 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); | |
650 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; | |
651 | ||
8b92e4d5 EZ |
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. | |
c906108c SS |
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 | |
8b92e4d5 | 658 | that we put in on the objfile_obstack, we can't do this since gdb gets |
c906108c SS |
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 == 0) | |
666 | { | |
667 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET | |
c5aa993b JM |
668 | will never be zero, even when there is no string table. This |
669 | would appear to be a bug in bfd. */ | |
c906108c SS |
670 | DBX_STRINGTAB_SIZE (objfile) = 0; |
671 | DBX_STRINGTAB (objfile) = NULL; | |
672 | } | |
673 | else | |
674 | { | |
675 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); | |
676 | if (val < 0) | |
677 | perror_with_name (name); | |
c5aa993b | 678 | |
4efb68b1 AC |
679 | memset (size_temp, 0, sizeof (size_temp)); |
680 | val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd); | |
c906108c SS |
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) = 0; | |
691 | DBX_STRINGTAB (objfile) = NULL; | |
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) = bfd_h_get_32 (sym_bfd, size_temp); | |
c5aa993b | 703 | |
c906108c SS |
704 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) |
705 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
706 | error ("ridiculous string table size (%d bytes).", | |
707 | DBX_STRINGTAB_SIZE (objfile)); | |
c5aa993b | 708 | |
c906108c | 709 | DBX_STRINGTAB (objfile) = |
8b92e4d5 | 710 | (char *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
711 | DBX_STRINGTAB_SIZE (objfile)); |
712 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); | |
c5aa993b | 713 | |
c906108c | 714 | /* Now read in the string table in one big gulp. */ |
c5aa993b | 715 | |
c906108c SS |
716 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
717 | if (val < 0) | |
718 | perror_with_name (name); | |
3a42e9d0 AM |
719 | val = bfd_bread (DBX_STRINGTAB (objfile), |
720 | DBX_STRINGTAB_SIZE (objfile), | |
721 | sym_bfd); | |
c906108c SS |
722 | if (val != DBX_STRINGTAB_SIZE (objfile)) |
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 | |
fba45db2 | 734 | dbx_symfile_finish (struct objfile *objfile) |
c906108c | 735 | { |
0a6ddd08 | 736 | if (objfile->deprecated_sym_stab_info != NULL) |
c906108c SS |
737 | { |
738 | if (HEADER_FILES (objfile) != NULL) | |
739 | { | |
aa1ee363 AC |
740 | int i = N_HEADER_FILES (objfile); |
741 | struct header_file *hfiles = HEADER_FILES (objfile); | |
c906108c SS |
742 | |
743 | while (--i >= 0) | |
744 | { | |
b8c9b27d KB |
745 | xfree (hfiles[i].name); |
746 | xfree (hfiles[i].vector); | |
c906108c | 747 | } |
b8c9b27d | 748 | xfree (hfiles); |
c906108c | 749 | } |
0a6ddd08 | 750 | xfree (objfile->deprecated_sym_stab_info); |
c906108c SS |
751 | } |
752 | free_header_files (); | |
753 | } | |
c906108c | 754 | \f |
c5aa993b | 755 | |
c906108c SS |
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 | ||
c906108c SS |
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 | ||
086df311 DJ |
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 | ||
c906108c SS |
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 | |
fba45db2 | 792 | fill_symbuf (bfd *sym_bfd) |
c906108c SS |
793 | { |
794 | unsigned int count; | |
795 | int nbytes; | |
796 | ||
086df311 DJ |
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) | |
805 | { | |
806 | count = sizeof (symbuf); | |
807 | nbytes = bfd_bread (symbuf, count, sym_bfd); | |
808 | } | |
c906108c SS |
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_SET) != 0) | |
815 | perror_with_name (bfd_get_filename (sym_bfd)); | |
816 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section); | |
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); | |
086df311 | 824 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
c906108c SS |
825 | } |
826 | ||
c906108c SS |
827 | if (nbytes < 0) |
828 | perror_with_name (bfd_get_filename (sym_bfd)); | |
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 | ||
086df311 DJ |
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_CUR); | |
847 | } | |
848 | ||
c906108c SS |
849 | #define INTERNALIZE_SYMBOL(intern, extern, abfd) \ |
850 | { \ | |
851 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \ | |
852 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \ | |
853 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \ | |
40b3352b L |
854 | if (bfd_get_sign_extend_vma (abfd)) \ |
855 | (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \ | |
856 | else \ | |
857 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \ | |
c906108c SS |
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 * | |
fba45db2 | 870 | dbx_next_symbol_text (struct objfile *objfile) |
c906108c SS |
871 | { |
872 | struct internal_nlist nlist; | |
873 | ||
874 | if (symbuf_idx == symbuf_end) | |
875 | fill_symbuf (symfile_bfd); | |
876 | ||
877 | symnum++; | |
c5aa993b | 878 | INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], symfile_bfd); |
c906108c SS |
879 | OBJSTAT (objfile, n_stabs++); |
880 | ||
881 | symbuf_idx++; | |
882 | ||
883 | return nlist.n_strx + stringtab_global + file_string_table_offset; | |
884 | } | |
885 | \f | |
886 | /* Initialize the list of bincls to contain none and have some | |
887 | allocated. */ | |
888 | ||
889 | static void | |
fba45db2 | 890 | init_bincl_list (int number, struct objfile *objfile) |
c906108c SS |
891 | { |
892 | bincls_allocated = number; | |
893 | next_bincl = bincl_list = (struct header_file_location *) | |
7936743b | 894 | xmalloc (bincls_allocated * sizeof (struct header_file_location)); |
c906108c SS |
895 | } |
896 | ||
897 | /* Add a bincl to the list. */ | |
898 | ||
899 | static void | |
fba45db2 | 900 | add_bincl_to_list (struct partial_symtab *pst, char *name, int instance) |
c906108c SS |
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 *) | |
0efffb96 AC |
907 | xrealloc ((char *) bincl_list, |
908 | bincls_allocated * sizeof (struct header_file_location)); | |
c906108c SS |
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 * | |
fba45db2 | 921 | find_corresponding_bincl_psymtab (char *name, int instance) |
c906108c SS |
922 | { |
923 | struct header_file_location *bincl; | |
924 | ||
925 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
926 | if (bincl->instance == instance | |
6314a349 | 927 | && strcmp (name, bincl->name) == 0) |
c906108c SS |
928 | return bincl->pst; |
929 | ||
23136709 | 930 | repeated_header_complaint (name, symnum); |
c906108c SS |
931 | return (struct partial_symtab *) 0; |
932 | } | |
933 | ||
934 | /* Free the storage allocated for the bincl list. */ | |
935 | ||
936 | static void | |
fba45db2 | 937 | free_bincl_list (struct objfile *objfile) |
c906108c | 938 | { |
2dc74dc1 | 939 | xfree (bincl_list); |
c906108c SS |
940 | bincls_allocated = 0; |
941 | } | |
942 | ||
74b7792f AC |
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 | ||
6a34fd2f EZ |
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)) | |
966 | { | |
23136709 KB |
967 | complaint (&symfile_complaints, "bad string table offset in symbol %d", |
968 | symnum); | |
6a34fd2f EZ |
969 | namestring = "<bad string table offset>"; |
970 | } | |
971 | else | |
972 | namestring = nlist.n_strx + file_string_table_offset + | |
973 | DBX_STRINGTAB (objfile); | |
974 | return namestring; | |
975 | } | |
976 | ||
c906108c SS |
977 | /* Scan a SunOs dynamic symbol table for symbols of interest and |
978 | add them to the minimal symbol table. */ | |
979 | ||
980 | static void | |
fba45db2 | 981 | read_dbx_dynamic_symtab (struct objfile *objfile) |
c906108c SS |
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) != bfd_target_aout_flavour | |
1003 | || (bfd_get_file_flags (abfd) & DYNAMIC) == 0 | |
1004 | || bfd_get_arch (abfd) == bfd_arch_unknown) | |
1005 | return; | |
1006 | ||
1007 | dynsym_size = bfd_get_dynamic_symtab_upper_bound (abfd); | |
1008 | if (dynsym_size < 0) | |
1009 | return; | |
1010 | ||
1011 | dynsyms = (asymbol **) xmalloc (dynsym_size); | |
b8c9b27d | 1012 | back_to = make_cleanup (xfree, dynsyms); |
c906108c SS |
1013 | |
1014 | dynsym_count = 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) <= 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); | |
1033 | ||
1034 | /* BFD symbols are section relative. */ | |
1035 | sym_value = sym->value + sec->vma; | |
1036 | ||
1037 | if (bfd_get_section_flags (abfd, sec) & SEC_CODE) | |
1038 | { | |
b8fbeb18 | 1039 | sym_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1040 | type = N_TEXT; |
1041 | } | |
1042 | else if (bfd_get_section_flags (abfd, sec) & SEC_DATA) | |
1043 | { | |
b8fbeb18 | 1044 | sym_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
1045 | type = N_DATA; |
1046 | } | |
1047 | else if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) | |
1048 | { | |
b8fbeb18 | 1049 | sym_value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
1050 | type = N_BSS; |
1051 | } | |
1052 | else | |
1053 | continue; | |
1054 | ||
1055 | if (sym->flags & BSF_GLOBAL) | |
1056 | type |= N_EXT; | |
1057 | ||
1058 | record_minimal_symbol ((char *) bfd_asymbol_name (sym), 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); | |
1068 | if (dynrel_size < 0) | |
1069 | { | |
1070 | do_cleanups (back_to); | |
1071 | return; | |
1072 | } | |
c5aa993b | 1073 | |
c906108c | 1074 | dynrels = (arelent **) xmalloc (dynrel_size); |
b8c9b27d | 1075 | make_cleanup (xfree, dynrels); |
c906108c SS |
1076 | |
1077 | dynrel_count = 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 = | |
b8fbeb18 | 1090 | rel->address + ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
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); | |
1112 | prim_record_minimal_symbol (name, address, mst_solib_trampoline, | |
1113 | objfile); | |
1114 | } | |
1115 | ||
1116 | do_cleanups (back_to); | |
1117 | } | |
1118 | ||
4867e41e | 1119 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
a78f21af | 1120 | static CORE_ADDR |
4867e41e DM |
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) | |
1130 | p = namestring; | |
1131 | n = p - namestring; | |
1132 | p = 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) | |
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 && filename != NULL) | |
1148 | { | |
1149 | /* Try again without the filename. */ | |
1150 | p[n] = 0; | |
1151 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
1152 | } | |
1153 | if (msym == NULL && filename != NULL) | |
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, objfile); | |
1159 | } | |
1160 | ||
1161 | return msym == NULL ? 0 : SYMBOL_VALUE_ADDRESS (msym); | |
1162 | } | |
1163 | #endif /* SOFUN_ADDRESS_MAYBE_MISSING */ | |
1164 | ||
23136709 KB |
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 | ||
d4f3574e SS |
1173 | /* Setup partial_symtab's describing each source file for which |
1174 | debugging information is available. */ | |
c906108c SS |
1175 | |
1176 | static void | |
fba45db2 | 1177 | read_dbx_symtab (struct objfile *objfile) |
c906108c | 1178 | { |
52f0bd74 | 1179 | struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
c906108c | 1180 | struct internal_nlist nlist; |
d4f3574e SS |
1181 | CORE_ADDR text_addr; |
1182 | int text_size; | |
c906108c | 1183 | |
52f0bd74 | 1184 | char *namestring; |
c906108c SS |
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; | |
7c8a5605 | 1192 | int data_sect_index; |
c906108c SS |
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 | ||
d4f3574e SS |
1206 | text_addr = DBX_TEXT_ADDR (objfile); |
1207 | text_size = DBX_TEXT_SIZE (objfile); | |
1208 | ||
c906108c SS |
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); | |
c5aa993b | 1215 | |
c906108c SS |
1216 | pst = (struct partial_symtab *) 0; |
1217 | ||
1218 | includes_allocated = 30; | |
1219 | includes_used = 0; | |
1220 | psymtab_include_list = (char **) alloca (includes_allocated * | |
1221 | sizeof (char *)); | |
1222 | ||
1223 | dependencies_allocated = 30; | |
1224 | dependencies_used = 0; | |
1225 | dependency_list = | |
1226 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1227 | sizeof (struct partial_symtab *)); | |
1228 | ||
1229 | /* Init bincl list */ | |
1230 | init_bincl_list (20, objfile); | |
74b7792f | 1231 | back_to = make_cleanup_free_bincl_list (objfile); |
c906108c SS |
1232 | |
1233 | last_source_file = NULL; | |
1234 | ||
96baa820 | 1235 | lowest_text_address = (CORE_ADDR) -1; |
c906108c SS |
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 | ||
4f49b26b JB |
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. */ | |
7c8a5605 JB |
1264 | data_sect_index = objfile->sect_index_data; |
1265 | if (data_sect_index == -1) | |
1266 | data_sect_index = SECT_OFF_BSS (objfile); | |
2a13f9bc JB |
1267 | if (data_sect_index == -1) |
1268 | data_sect_index = SECT_OFF_RODATA (objfile); | |
d646061f JB |
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. */ | |
7c8a5605 | 1275 | |
c906108c SS |
1276 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
1277 | { | |
1278 | /* Get the symbol for this run and pull out some info */ | |
c5aa993b | 1279 | QUIT; /* allow this to be interruptable */ |
c906108c SS |
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) == N_SLINE) | |
1288 | { | |
1289 | has_line_numbers = 1; | |
1290 | continue; | |
1291 | } | |
1292 | ||
1293 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
1294 | OBJSTAT (objfile, 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 | ||
c5aa993b JM |
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. | |
6a34fd2f | 1306 | */ |
c5aa993b | 1307 | |
6a34fd2f EZ |
1308 | switch (nlist.n_type) |
1309 | { | |
6a34fd2f EZ |
1310 | char *p; |
1311 | /* | |
1312 | * Standard, external, non-debugger, symbols | |
1313 | */ | |
1314 | ||
1315 | case N_TEXT | N_EXT: | |
1316 | case N_NBTEXT | N_EXT: | |
1317 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1318 | goto record_it; | |
1319 | ||
1320 | case N_DATA | N_EXT: | |
1321 | case N_NBDATA | N_EXT: | |
14f75137 | 1322 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
6a34fd2f EZ |
1323 | goto record_it; |
1324 | ||
1325 | case N_BSS: | |
1326 | case N_BSS | N_EXT: | |
1327 | case N_NBBSS | N_EXT: | |
1328 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
1329 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); | |
1330 | goto record_it; | |
1331 | ||
1332 | case N_ABS | N_EXT: | |
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_FN: | |
1351 | case N_FN_SEQ: | |
1352 | case N_TEXT: | |
1353 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
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 | { | |
6a34fd2f EZ |
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. */ | |
5afc051b | 1363 | && nlist.n_value >= pst->textlow) |
6a34fd2f EZ |
1364 | { |
1365 | end_psymtab (pst, psymtab_include_list, includes_used, | |
1366 | symnum * symbol_size, | |
5afc051b JB |
1367 | nlist.n_value > pst->texthigh |
1368 | ? nlist.n_value : pst->texthigh, | |
6a34fd2f EZ |
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_DATA: | |
14f75137 | 1383 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
6a34fd2f EZ |
1384 | goto record_it; |
1385 | ||
1386 | case N_UNDF | N_EXT: | |
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)) | |
1396 | { | |
1397 | continue; /* Error in lookup; ignore symbol for now. */ | |
1398 | } | |
1399 | nlist.n_type ^= (N_BSS ^ N_UNDF); /* 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_UNDF: | |
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_ABS: | |
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_INDR: | |
1437 | case N_INDR | N_EXT: | |
1438 | case N_SETA: | |
1439 | case N_SETA | N_EXT: | |
1440 | case N_SETT: | |
1441 | case N_SETT | N_EXT: | |
1442 | case N_SETD: | |
1443 | case N_SETD | N_EXT: | |
1444 | case N_SETB: | |
1445 | case N_SETB | N_EXT: | |
1446 | case N_SETV: | |
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; | |
57c22c6c | 1459 | static char *dirname_nso; |
6a34fd2f EZ |
1460 | int prev_textlow_not_set; |
1461 | ||
1462 | valu = nlist.n_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
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, | |
5afc051b | 1491 | valu > pst->texthigh ? valu : pst->texthigh, |
6a34fd2f EZ |
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') | |
57c22c6c BR |
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 | } | |
6a34fd2f EZ |
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) | |
57c22c6c | 1529 | { |
6a34fd2f EZ |
1530 | pst = start_psymtab (objfile, |
1531 | namestring, valu, | |
1532 | first_so_symnum * symbol_size, | |
1533 | objfile->global_psymbols.next, | |
1534 | objfile->static_psymbols.next); | |
57c22c6c BR |
1535 | pst->dirname = dirname_nso; |
1536 | dirname_nso = NULL; | |
1537 | } | |
6a34fd2f EZ |
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) | |
1561 | { | |
1562 | /* FIXME: we should not get here without a PST to work on. | |
1563 | Attempt to recover. */ | |
23136709 KB |
1564 | complaint (&symfile_complaints, |
1565 | "N_BINCL %s not in entries for any file, at symtab pos %d", | |
1566 | namestring, symnum); | |
6a34fd2f EZ |
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). */ | |
6314a349 | 1603 | if (pst && strcmp (namestring, pst->filename) == 0) |
6a34fd2f EZ |
1604 | continue; |
1605 | { | |
aa1ee363 | 1606 | int i; |
6a34fd2f | 1607 | for (i = 0; i < includes_used; i++) |
6314a349 | 1608 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
6a34fd2f EZ |
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) * | |
1626 | sizeof (char *)); | |
4efb68b1 | 1627 | memcpy (psymtab_include_list, orig, |
6a34fd2f EZ |
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; | |
5afc051b JB |
1661 | if (pst->texthigh == 0 || valu > pst->texthigh) |
1662 | pst->texthigh = valu; | |
6a34fd2f EZ |
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': | |
7c8a5605 | 1682 | nlist.n_value += ANOFFSET (objfile->section_offsets, data_sect_index); |
6a34fd2f EZ |
1683 | #ifdef STATIC_TRANSFORM_NAME |
1684 | namestring = STATIC_TRANSFORM_NAME (namestring); | |
1685 | #endif | |
1686 | add_psymbol_to_list (namestring, p - namestring, | |
176620f1 | 1687 | VAR_DOMAIN, LOC_STATIC, |
6a34fd2f EZ |
1688 | &objfile->static_psymbols, |
1689 | 0, nlist.n_value, | |
1690 | psymtab_language, objfile); | |
1691 | continue; | |
1692 | case 'G': | |
7c8a5605 | 1693 | nlist.n_value += ANOFFSET (objfile->section_offsets, data_sect_index); |
6a34fd2f EZ |
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, | |
176620f1 | 1697 | VAR_DOMAIN, LOC_STATIC, |
6a34fd2f EZ |
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, | |
176620f1 | 1715 | STRUCT_DOMAIN, LOC_TYPEDEF, |
6a34fd2f EZ |
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, | |
176620f1 | 1723 | VAR_DOMAIN, LOC_TYPEDEF, |
6a34fd2f EZ |
1724 | &objfile->static_psymbols, |
1725 | nlist.n_value, 0, | |
1726 | psymtab_language, objfile); | |
1727 | p += 1; | |
1728 | } | |
6a34fd2f EZ |
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, | |
176620f1 | 1735 | VAR_DOMAIN, LOC_TYPEDEF, |
6a34fd2f EZ |
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); | |
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, | |
176620f1 | 1797 | VAR_DOMAIN, LOC_CONST, |
6a34fd2f EZ |
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, | |
176620f1 | 1814 | VAR_DOMAIN, LOC_CONST, |
6a34fd2f EZ |
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'; | |
23136709 | 1826 | function_outside_compilation_unit_complaint (name); |
6a34fd2f EZ |
1827 | xfree (name); |
1828 | } | |
1829 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
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, | |
1836 | SECT_OFF_TEXT (objfile))) | |
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 | { | |
5afc051b | 1850 | pst->textlow = nlist.n_value; |
6a34fd2f EZ |
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 | |
5afc051b | 1866 | || (nlist.n_value < pst->textlow |
6a34fd2f EZ |
1867 | && (nlist.n_value |
1868 | != ANOFFSET (objfile->section_offsets, | |
1869 | SECT_OFF_TEXT (objfile)))))) | |
1870 | { | |
5afc051b | 1871 | pst->textlow = nlist.n_value; |
6a34fd2f EZ |
1872 | textlow_not_set = 0; |
1873 | } | |
1874 | add_psymbol_to_list (namestring, p - namestring, | |
176620f1 | 1875 | VAR_DOMAIN, LOC_BLOCK, |
6a34fd2f EZ |
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'; | |
23136709 | 1891 | function_outside_compilation_unit_complaint (name); |
6a34fd2f EZ |
1892 | xfree (name); |
1893 | } | |
1894 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
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, | |
1901 | SECT_OFF_TEXT (objfile))) | |
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 | { | |
5afc051b | 1915 | pst->textlow = nlist.n_value; |
6a34fd2f EZ |
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 | |
5afc051b | 1931 | || (nlist.n_value < pst->textlow |
6a34fd2f EZ |
1932 | && (nlist.n_value |
1933 | != ANOFFSET (objfile->section_offsets, | |
1934 | SECT_OFF_TEXT (objfile)))))) | |
1935 | { | |
5afc051b | 1936 | pst->textlow = nlist.n_value; |
6a34fd2f EZ |
1937 | textlow_not_set = 0; |
1938 | } | |
1939 | add_psymbol_to_list (namestring, p - namestring, | |
176620f1 | 1940 | VAR_DOMAIN, LOC_BLOCK, |
6a34fd2f EZ |
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) */ | |
6a34fd2f EZ |
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 | ||
23136709 KB |
1983 | complaint (&symfile_complaints, "unknown symbol descriptor `%c'", |
1984 | p[1]); | |
6a34fd2f EZ |
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) | |
2029 | * sizeof (struct partial_symtab *)); | |
4efb68b1 | 2030 | memcpy (dependency_list, orig, |
6a34fd2f EZ |
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. | |
5afc051b | 2046 | end_psymtab will set pst->texthigh to the proper value, which |
6a34fd2f EZ |
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; | |
c906108c | 2061 | |
6a34fd2f EZ |
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: | |
c77c642a | 2091 | case N_PATCH: |
6a34fd2f EZ |
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. */ | |
bb599908 | 2099 | unknown_symtype_complaint (hex_string (nlist.n_type)); |
6a34fd2f EZ |
2100 | continue; |
2101 | } | |
c906108c SS |
2102 | } |
2103 | ||
2104 | /* If there's stuff to be cleaned up, clean it up. */ | |
c906108c SS |
2105 | if (pst) |
2106 | { | |
2107 | /* Don't set pst->texthigh lower than it already is. */ | |
2108 | CORE_ADDR text_end = | |
6a34fd2f EZ |
2109 | (lowest_text_address == (CORE_ADDR) -1 |
2110 | ? (text_addr + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))) | |
2111 | : lowest_text_address) | |
2112 | + text_size; | |
c906108c SS |
2113 | |
2114 | end_psymtab (pst, psymtab_include_list, includes_used, | |
2115 | symnum * symbol_size, | |
5afc051b | 2116 | text_end > pst->texthigh ? text_end : pst->texthigh, |
c906108c SS |
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 | ||
d4f3574e | 2131 | static struct partial_symtab * |
fba45db2 KB |
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) | |
c906108c SS |
2135 | { |
2136 | struct partial_symtab *result = | |
d4f3574e | 2137 | start_psymtab_common (objfile, objfile->section_offsets, |
c5aa993b | 2138 | filename, textlow, global_syms, static_syms); |
c906108c SS |
2139 | |
2140 | result->read_symtab_private = (char *) | |
8b92e4d5 | 2141 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symloc)); |
c5aa993b | 2142 | LDSYMOFF (result) = ldsymoff; |
c906108c | 2143 | result->read_symtab = dbx_psymtab_to_symtab; |
c5aa993b JM |
2144 | SYMBOL_SIZE (result) = symbol_size; |
2145 | SYMBOL_OFFSET (result) = symbol_table_offset; | |
2146 | STRING_OFFSET (result) = string_table_offset; | |
2147 | FILE_STRING_OFFSET (result) = file_string_table_offset; | |
c906108c SS |
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 * | |
fba45db2 KB |
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) | |
c906108c SS |
2171 | { |
2172 | int i; | |
c5aa993b | 2173 | struct objfile *objfile = pst->objfile; |
c906108c SS |
2174 | |
2175 | if (capping_symbol_offset != -1) | |
c5aa993b | 2176 | LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst); |
5afc051b | 2177 | pst->texthigh = capping_text; |
c906108c SS |
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. | |
6a34fd2f | 2183 | The first trick is: if we see a static |
c906108c SS |
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 | |
6a34fd2f | 2189 | in the .o file. Also, there's a hack in |
c906108c SS |
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 | ||
5afc051b | 2195 | if (pst->texthigh == 0 && last_function_name) |
c906108c SS |
2196 | { |
2197 | char *p; | |
2198 | int n; | |
2199 | struct minimal_symbol *minsym; | |
2200 | ||
2201 | p = strchr (last_function_name, ':'); | |
2202 | if (p == NULL) | |
2203 | p = last_function_name; | |
2204 | n = p - last_function_name; | |
2205 | p = alloca (n + 2); | |
2206 | strncpy (p, last_function_name, n); | |
2207 | p[n] = 0; | |
c5aa993b | 2208 | |
c906108c SS |
2209 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
2210 | if (minsym == NULL) | |
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) | |
5afc051b | 2221 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + MSYMBOL_SIZE (minsym); |
c906108c SS |
2222 | |
2223 | last_function_name = NULL; | |
2224 | } | |
2225 | ||
2226 | /* this test will be true if the last .o file is only data */ | |
2227 | if (textlow_not_set) | |
5afc051b | 2228 | pst->textlow = pst->texthigh; |
c906108c SS |
2229 | else |
2230 | { | |
2231 | struct partial_symtab *p1; | |
2232 | ||
2233 | /* If we know our own starting text address, then walk through all other | |
c5aa993b JM |
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. */ | |
c906108c SS |
2238 | |
2239 | ALL_OBJFILE_PSYMTABS (objfile, p1) | |
c5aa993b | 2240 | { |
5afc051b | 2241 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) |
c5aa993b | 2242 | { |
5afc051b | 2243 | p1->texthigh = pst->textlow; |
c5aa993b | 2244 | /* if this file has only data, then make textlow match texthigh */ |
5afc051b JB |
2245 | if (p1->textlow == 0) |
2246 | p1->textlow = p1->texthigh; | |
c5aa993b JM |
2247 | } |
2248 | } | |
c906108c SS |
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 **) | |
8b92e4d5 | 2263 | obstack_alloc (&objfile->objfile_obstack, |
c5aa993b | 2264 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c | 2265 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2266 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2267 | } |
2268 | else | |
2269 | pst->dependencies = 0; | |
2270 | ||
2271 | for (i = 0; i < num_includes; i++) | |
2272 | { | |
2273 | struct partial_symtab *subpst = | |
c5aa993b | 2274 | allocate_psymtab (include_list[i], objfile); |
c906108c | 2275 | |
b8fbeb18 | 2276 | /* Copy the sesction_offsets array from the main psymtab. */ |
c906108c SS |
2277 | subpst->section_offsets = pst->section_offsets; |
2278 | subpst->read_symtab_private = | |
8b92e4d5 | 2279 | (char *) obstack_alloc (&objfile->objfile_obstack, |
c5aa993b JM |
2280 | sizeof (struct symloc)); |
2281 | LDSYMOFF (subpst) = | |
2282 | LDSYMLEN (subpst) = | |
5afc051b JB |
2283 | subpst->textlow = |
2284 | subpst->texthigh = 0; | |
c906108c SS |
2285 | |
2286 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2287 | shared by the entire set of include files. FIXME-someday. */ |
c906108c | 2288 | subpst->dependencies = (struct partial_symtab **) |
8b92e4d5 | 2289 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2290 | sizeof (struct partial_symtab *)); |
2291 | subpst->dependencies[0] = pst; | |
2292 | subpst->number_of_dependencies = 1; | |
2293 | ||
2294 | subpst->globals_offset = | |
2295 | subpst->n_global_syms = | |
c5aa993b JM |
2296 | subpst->statics_offset = |
2297 | subpst->n_static_syms = 0; | |
c906108c SS |
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 | |
c5aa993b | 2318 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2319 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b JM |
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. */ | |
c906108c SS |
2324 | |
2325 | discard_psymtab (pst); | |
2326 | ||
2327 | /* Indicate that psymtab was thrown away. */ | |
c5aa993b | 2328 | pst = (struct partial_symtab *) NULL; |
c906108c SS |
2329 | } |
2330 | return pst; | |
2331 | } | |
2332 | \f | |
2333 | static void | |
fba45db2 | 2334 | dbx_psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c SS |
2335 | { |
2336 | struct cleanup *old_chain; | |
2337 | int i; | |
c5aa993b | 2338 | |
c906108c SS |
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", | |
c5aa993b | 2345 | pst->filename); |
c906108c SS |
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); | |
c5aa993b | 2361 | wrap_here (""); /* Flush output */ |
c906108c SS |
2362 | gdb_flush (gdb_stdout); |
2363 | } | |
2364 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); | |
2365 | } | |
2366 | ||
c5aa993b | 2367 | if (LDSYMLEN (pst)) /* Otherwise it's a dummy */ |
c906108c SS |
2368 | { |
2369 | /* Init stuff necessary for reading in symbols */ | |
2370 | stabsread_init (); | |
2371 | buildsym_init (); | |
a0b3c4fd | 2372 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c SS |
2373 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
2374 | symbol_size = SYMBOL_SIZE (pst); | |
2375 | ||
2376 | /* Read in this file's symbols */ | |
2377 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); | |
2378 | read_ofile_symtab (pst); | |
c906108c SS |
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 | |
fba45db2 | 2390 | dbx_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2391 | { |
2392 | bfd *sym_bfd; | |
086df311 | 2393 | struct cleanup *back_to = NULL; |
c906108c SS |
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", | |
c5aa993b | 2401 | pst->filename); |
c906108c SS |
2402 | return; |
2403 | } | |
2404 | ||
c5aa993b | 2405 | if (LDSYMLEN (pst) || pst->number_of_dependencies) |
c906108c SS |
2406 | { |
2407 | /* Print the message now, before reading the string table, | |
c5aa993b | 2408 | to avoid disconcerting pauses. */ |
c906108c SS |
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 | ||
086df311 DJ |
2419 | if (DBX_STAB_SECTION (pst->objfile)) |
2420 | { | |
2421 | stabs_data | |
2422 | = symfile_relocate_debug_section (pst->objfile->obfd, | |
2423 | DBX_STAB_SECTION (pst->objfile), | |
2424 | NULL); | |
2425 | if (stabs_data) | |
2426 | back_to = make_cleanup (free_current_contents, (void *) &stabs_data); | |
2427 | } | |
2428 | ||
c906108c SS |
2429 | dbx_psymtab_to_symtab_1 (pst); |
2430 | ||
086df311 DJ |
2431 | if (back_to) |
2432 | do_cleanups (back_to); | |
2433 | ||
c906108c SS |
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. */ | |
c5aa993b | 2445 | |
c906108c | 2446 | static void |
fba45db2 | 2447 | read_ofile_symtab (struct partial_symtab *pst) |
c906108c | 2448 | { |
52f0bd74 AC |
2449 | char *namestring; |
2450 | struct external_nlist *bufp; | |
c906108c SS |
2451 | struct internal_nlist nlist; |
2452 | unsigned char type; | |
2453 | unsigned max_symnum; | |
52f0bd74 | 2454 | bfd *abfd; |
c906108c SS |
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; | |
c5aa993b JM |
2463 | sym_offset = LDSYMOFF (pst); |
2464 | sym_size = LDSYMLEN (pst); | |
5afc051b JB |
2465 | text_offset = pst->textlow; |
2466 | text_size = pst->texthigh - pst->textlow; | |
b8fbeb18 EZ |
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. */ | |
c906108c SS |
2471 | section_offsets = pst->section_offsets; |
2472 | ||
2473 | current_objfile = objfile; | |
2474 | subfile_stack = NULL; | |
2475 | ||
2476 | stringtab_global = DBX_STRINGTAB (objfile); | |
2477 | last_source_file = NULL; | |
2478 | ||
2479 | abfd = objfile->obfd; | |
2480 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ | |
2481 | symbuf_end = symbuf_idx = 0; | |
086df311 DJ |
2482 | symbuf_read = 0; |
2483 | symbuf_left = sym_offset + sym_size; | |
c906108c SS |
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. */ | |
c5aa993b | 2491 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c | 2492 | { |
086df311 | 2493 | stabs_seek (sym_offset - symbol_size); |
c906108c SS |
2494 | fill_symbuf (abfd); |
2495 | bufp = &symbuf[symbuf_idx++]; | |
2496 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2497 | OBJSTAT (objfile, n_stabs++); | |
2498 | ||
6a34fd2f | 2499 | namestring = set_namestring (objfile, nlist); |
c906108c SS |
2500 | |
2501 | processing_gcc_compilation = 0; | |
2502 | if (nlist.n_type == N_TEXT) | |
2503 | { | |
2504 | const char *tempstring = namestring; | |
2505 | ||
cb137aa5 | 2506 | if (DEPRECATED_STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
c906108c | 2507 | processing_gcc_compilation = 1; |
cb137aa5 | 2508 | else if (DEPRECATED_STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
c906108c SS |
2509 | processing_gcc_compilation = 2; |
2510 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) | |
2511 | ++tempstring; | |
cb137aa5 | 2512 | if (DEPRECATED_STREQN (tempstring, "__gnu_compiled", 14)) |
c906108c SS |
2513 | processing_gcc_compilation = 2; |
2514 | } | |
2515 | ||
2516 | /* Try to select a C++ demangling based on the compilation unit | |
c5aa993b | 2517 | producer. */ |
c906108c | 2518 | |
8052a17a JM |
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. */ | |
c906108c SS |
2522 | if (processing_gcc_compilation) |
2523 | { | |
2524 | if (AUTO_DEMANGLING) | |
2525 | { | |
2526 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
2527 | } | |
2528 | } | |
8052a17a | 2529 | #endif |
c906108c SS |
2530 | } |
2531 | else | |
2532 | { | |
2533 | /* The N_SO starting this symtab is the first symbol, so we | |
c5aa993b JM |
2534 | better not check the symbol before it. I'm not this can |
2535 | happen, but it doesn't hurt to check for it. */ | |
086df311 | 2536 | stabs_seek (sym_offset); |
c906108c SS |
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) != N_SO) | |
c5aa993b | 2544 | error ("First symbol in segment of executable not a source symbol"); |
c906108c SS |
2545 | |
2546 | max_symnum = sym_size / symbol_size; | |
2547 | ||
2548 | for (symnum = 0; | |
2549 | symnum < max_symnum; | |
2550 | symnum++) | |
2551 | { | |
2552 | QUIT; /* Allow this to be interruptable */ | |
2553 | if (symbuf_idx == symbuf_end) | |
c5aa993b | 2554 | fill_symbuf (abfd); |
c906108c SS |
2555 | bufp = &symbuf[symbuf_idx++]; |
2556 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2557 | OBJSTAT (objfile, n_stabs++); | |
2558 | ||
2559 | type = bfd_h_get_8 (abfd, bufp->e_type); | |
2560 | ||
6a34fd2f | 2561 | namestring = set_namestring (objfile, nlist); |
c906108c | 2562 | |
c5aa993b JM |
2563 | if (type & N_STAB) |
2564 | { | |
c906108c SS |
2565 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
2566 | namestring, section_offsets, objfile); | |
c5aa993b | 2567 | } |
c906108c SS |
2568 | /* We skip checking for a new .o or -l file; that should never |
2569 | happen in this routine. */ | |
2570 | else if (type == N_TEXT) | |
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 | ||
cb137aa5 | 2578 | if (DEPRECATED_STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) |
c906108c | 2579 | processing_gcc_compilation = 1; |
cb137aa5 | 2580 | else if (DEPRECATED_STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) |
c906108c SS |
2581 | processing_gcc_compilation = 2; |
2582 | ||
8052a17a JM |
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. */ | |
c906108c SS |
2586 | if (AUTO_DEMANGLING) |
2587 | { | |
2588 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
2589 | } | |
8052a17a | 2590 | #endif |
c906108c | 2591 | } |
c5aa993b JM |
2592 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
2593 | || type == (unsigned char) N_NBTEXT | |
2594 | ) | |
2595 | { | |
c906108c SS |
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 | ; | |
c5aa993b | 2606 | } |
c906108c SS |
2607 | } |
2608 | ||
2609 | current_objfile = NULL; | |
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, | |
5afc051b | 2613 | which comes from pst->textlow is correct. */ |
c906108c SS |
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 | |
5afc051b | 2619 | from pst->textlow which is correct. */ |
c906108c SS |
2620 | if (last_source_start_addr > text_offset) |
2621 | last_source_start_addr = text_offset; | |
2622 | ||
b8fbeb18 | 2623 | pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT (objfile)); |
c906108c | 2624 | |
c906108c SS |
2625 | end_stabs (); |
2626 | } | |
c906108c | 2627 | \f |
c5aa993b | 2628 | |
c906108c SS |
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 | |
c5aa993b | 2637 | file were relocated when it was loaded into memory. |
b8fbeb18 EZ |
2638 | Note that these section_offsets are not the |
2639 | objfile->section_offsets but the pst->section_offsets. | |
c5aa993b JM |
2640 | All symbols that refer |
2641 | to memory locations need to be offset by these amounts. | |
c906108c | 2642 | OBJFILE is the object file from which we are reading symbols. |
c5aa993b | 2643 | It is used in end_symtab. */ |
c906108c SS |
2644 | |
2645 | void | |
fba45db2 KB |
2646 | process_one_symbol (int type, int desc, CORE_ADDR valu, char *name, |
2647 | struct section_offsets *section_offsets, | |
2648 | struct objfile *objfile) | |
c906108c | 2649 | { |
52f0bd74 | 2650 | struct context_stack *new; |
c906108c SS |
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 | ||
a1b9830c DJ |
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 | ||
54c7009d EZ |
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. */ | |
a1b9830c DJ |
2666 | static int sline_found_in_function = 1; |
2667 | ||
c906108c SS |
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. */ | |
b8fbeb18 | 2679 | function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2680 | |
2681 | /* Something is wrong if we see real data before | |
2682 | seeing a source file name. */ | |
2683 | ||
c5aa993b | 2684 | if (last_source_file == NULL && type != (unsigned char) N_SO) |
c906108c SS |
2685 | { |
2686 | /* Ignore any symbols which appear before an N_SO symbol. | |
c5aa993b JM |
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 (). */ | |
c906108c SS |
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. */ | |
0c5e171a KD |
2702 | |
2703 | if (context_stack_depth <= 0) | |
2704 | { | |
23136709 | 2705 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2706 | break; |
2707 | } | |
2708 | ||
6b37567a JJ |
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 | ||
c906108c SS |
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 | ||
a1b9830c DJ |
2732 | sline_found_in_function = 0; |
2733 | ||
c906108c | 2734 | /* Relocate for dynamic loading */ |
b8fbeb18 | 2735 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
181c1381 | 2736 | valu = SMASH_TEXT_ADDRESS (valu); |
a1b9830c DJ |
2737 | last_function_start = valu; |
2738 | ||
c906108c SS |
2739 | goto define_a_symbol; |
2740 | ||
2741 | case N_LBRAC: | |
2742 | /* This "symbol" just indicates the start of an inner lexical | |
c5aa993b | 2743 | context within a function. */ |
c906108c SS |
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 | ||
c906108c SS |
2757 | new = push_context (desc, valu); |
2758 | break; | |
2759 | ||
2760 | case N_RBRAC: | |
2761 | /* This "symbol" just indicates the end of an inner lexical | |
c5aa993b | 2762 | context that was started with N_LBRAC. */ |
c906108c SS |
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 | ||
0c5e171a KD |
2776 | if (context_stack_depth <= 0) |
2777 | { | |
23136709 | 2778 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2779 | break; |
2780 | } | |
2781 | ||
c5aa993b | 2782 | new = pop_context (); |
c906108c | 2783 | if (desc != new->depth) |
23136709 | 2784 | lbrac_mismatch_complaint (symnum); |
c906108c SS |
2785 | |
2786 | /* Some compilers put the variable decls inside of an | |
2787 | LBRAC/RBRAC block. This macro should be nonzero if this | |
c5aa993b JM |
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. */ | |
c906108c SS |
2791 | #if !defined (VARIABLES_INSIDE_BLOCK) |
2792 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 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. */ | |
c5aa993b | 2797 | if (!VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)) |
1f077a3e KB |
2798 | { |
2799 | if (local_symbols != NULL) | |
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. */ | |
23136709 KB |
2809 | complaint (&symfile_complaints, |
2810 | "misplaced N_LBRAC entry; discarding local symbols which have no enclosing block"); | |
1f077a3e KB |
2811 | } |
2812 | local_symbols = new->locals; | |
2813 | } | |
c906108c SS |
2814 | |
2815 | if (context_stack_depth | |
c5aa993b | 2816 | > !VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)) |
c906108c SS |
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) | |
2825 | { | |
2826 | /* Muzzle a compiler bug that makes end < start. (which | |
c5aa993b | 2827 | compilers? Is this ever harmful?). */ |
c906108c SS |
2828 | if (new->start_addr > valu) |
2829 | { | |
23136709 KB |
2830 | complaint (&symfile_complaints, |
2831 | "block start larger than block end"); | |
c906108c SS |
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 | ||
c5aa993b | 2848 | if (VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)) |
c906108c SS |
2849 | /* Now pop locals of block just finished. */ |
2850 | local_symbols = new->locals; | |
2851 | break; | |
2852 | ||
2853 | case N_FN: | |
2854 | case N_FN_SEQ: | |
2855 | /* This kind of symbol indicates the start of an object file. */ | |
2856 | /* Relocate for dynamic loading */ | |
b8fbeb18 | 2857 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2858 | break; |
2859 | ||
2860 | case N_SO: | |
2861 | /* This type of symbol indicates the start of data | |
c5aa993b JM |
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. */ | |
c906108c | 2865 | /* Relocate for dynamic loading */ |
b8fbeb18 | 2866 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2867 | |
2868 | n_opt_found = 0; | |
2869 | ||
c906108c SS |
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. | |
c5aa993b | 2875 | Patch things up. */ |
c906108c SS |
2876 | if (previous_stab_code == (unsigned char) N_SO) |
2877 | { | |
2878 | patch_subfile_names (current_subfile, name); | |
2879 | break; /* Ignore repeated SOs */ | |
2880 | } | |
b8fbeb18 | 2881 | end_symtab (valu, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2882 | end_stabs (); |
2883 | } | |
2884 | ||
2885 | /* Null name means this just marks the end of text for this .o file. | |
c5aa993b | 2886 | Don't start a new symtab in this case. */ |
c906108c SS |
2887 | if (*name == '\000') |
2888 | break; | |
2889 | ||
2890 | if (block_address_function_relative) | |
c5aa993b | 2891 | function_start_offset = 0; |
c906108c SS |
2892 | |
2893 | start_stabs (); | |
2894 | start_symtab (name, NULL, valu); | |
2895 | record_debugformat ("stabs"); | |
2896 | break; | |
2897 | ||
2898 | case N_SOL: | |
2899 | /* This type of symbol indicates the start of data for | |
c5aa993b JM |
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.) */ | |
c906108c | 2903 | /* Relocate for dynamic loading */ |
b8fbeb18 | 2904 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
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 | |
c5aa993b JM |
2924 | one line-number -- core-address correspondence. |
2925 | Enter it in the line list for this symbol table. */ | |
c906108c SS |
2926 | |
2927 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ | |
2928 | valu += function_start_offset; | |
2929 | ||
a1b9830c DJ |
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); | |
c906108c SS |
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 | ||
c5aa993b JM |
2949 | /* The following symbol types need to have the appropriate offset added |
2950 | to their value; then we process symbol definitions in the name. */ | |
c906108c SS |
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 */ | |
c5aa993b JM |
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). */ | |
c906108c SS |
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. */ | |
b8fbeb18 | 2987 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2988 | goto define_a_symbol; |
2989 | } | |
2990 | } | |
2991 | /* Since it's not the kludge case, re-dispatch to the right handler. */ | |
c5aa993b JM |
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: | |
e1e9e218 | 3001 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c5aa993b | 3002 | } |
c906108c SS |
3003 | } |
3004 | ||
3005 | case_N_STSYM: /* Static symbol in data seg */ | |
3006 | case N_DSLINE: /* Source line number, data seg */ | |
b8fbeb18 | 3007 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3008 | goto define_a_symbol; |
3009 | ||
3010 | case_N_LCSYM: /* Static symbol in BSS seg */ | |
3011 | case N_BSLINE: /* Source line number, bss seg */ | |
c5aa993b | 3012 | /* N_BROWS: overlaps with N_BSLINE */ |
b8fbeb18 | 3013 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3014 | goto define_a_symbol; |
3015 | ||
3016 | case_N_ROSYM: /* Static symbol in Read-only data seg */ | |
b8fbeb18 | 3017 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA (objfile)); |
c906108c SS |
3018 | goto define_a_symbol; |
3019 | ||
3020 | case N_ENTRY: /* Alternate entry point */ | |
3021 | /* Relocate for dynamic loading */ | |
b8fbeb18 | 3022 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3023 | goto define_a_symbol; |
3024 | ||
c5aa993b JM |
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. */ | |
c906108c SS |
3027 | default: |
3028 | case N_CATCH: /* Exception handler catcher */ | |
3029 | case N_EHDECL: /* Exception handler name */ | |
3030 | case N_PC: /* Global symbol in Pascal */ | |
c5aa993b JM |
3031 | case N_M2C: /* Modula-2 compilation unit */ |
3032 | /* N_MOD2: overlaps with N_EHDECL */ | |
c906108c SS |
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: | |
bb599908 | 3040 | unknown_symtype_complaint (hex_string (type)); |
c906108c SS |
3041 | /* FALLTHROUGH */ |
3042 | ||
c5aa993b JM |
3043 | /* The following symbol types don't need the address field relocated, |
3044 | since it is either unused, or is absolute. */ | |
c906108c SS |
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) | |
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 | |
c5aa993b | 3072 | from N_FUN symbols. */ |
c906108c | 3073 | if (type == N_FUN |
b8fbeb18 | 3074 | && valu == ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))) |
9a058a09 KB |
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 | } | |
c906108c SS |
3087 | #endif |
3088 | ||
c906108c SS |
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. */ | |
c5aa993b | 3096 | function_start_offset = valu; |
c906108c SS |
3097 | |
3098 | within_function = 1; | |
c3f6f71d JM |
3099 | |
3100 | if (context_stack_depth > 1) | |
3101 | { | |
23136709 KB |
3102 | complaint (&symfile_complaints, |
3103 | "unmatched N_LBRAC before symtab pos %d", symnum); | |
c3f6f71d JM |
3104 | break; |
3105 | } | |
3106 | ||
c906108c SS |
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 | } | |
c906108c SS |
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 | ||
c5aa993b JM |
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 */ | |
c906108c SS |
3130 | if (name) |
3131 | { | |
6314a349 | 3132 | if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
3133 | { |
3134 | processing_gcc_compilation = 2; | |
8052a17a JM |
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. */ | |
c906108c SS |
3138 | if (AUTO_DEMANGLING) |
3139 | { | |
3140 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
3141 | } | |
3142 | #endif | |
3143 | } | |
3144 | else | |
3145 | n_opt_found = 1; | |
3146 | } | |
3147 | break; | |
3148 | ||
51cc5b07 AC |
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) | |
3159 | set_main_name (name); | |
3160 | break; | |
3161 | ||
c5aa993b JM |
3162 | /* The following symbol types can be ignored. */ |
3163 | case N_OBJ: /* Solaris 2: Object file dir and name */ | |
c77c642a | 3164 | case N_PATCH: /* Solaris2: Patch Run Time Checker. */ |
c5aa993b JM |
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. */ | |
c906108c | 3168 | case N_ENDM: /* Solaris 2: End of module */ |
c906108c SS |
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 | |
c5aa993b | 3177 | symbol. */ |
c906108c SS |
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 | |
c5aa993b | 3188 | reference list, then put it on the reference list. |
c906108c | 3189 | |
c5aa993b JM |
3190 | We go ahead and advance NAME past the reference, even though |
3191 | it is not strictly necessary at this time. */ | |
c906108c SS |
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 | \f | |
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 | |
fba45db2 KB |
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) | |
c906108c SS |
3233 | { |
3234 | int val; | |
3235 | bfd *sym_bfd = objfile->obfd; | |
3236 | char *name = bfd_get_filename (sym_bfd); | |
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. */ | |
0a6ddd08 | 3242 | info = objfile->deprecated_sym_stab_info; |
c906108c SS |
3243 | |
3244 | DBX_TEXT_ADDR (objfile) = textaddr; | |
3245 | DBX_TEXT_SIZE (objfile) = textsize; | |
3246 | ||
3247 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3248 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; |
c906108c | 3249 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
c5aa993b | 3250 | |
c906108c SS |
3251 | if (stabstrsize > bfd_get_size (sym_bfd)) |
3252 | error ("ridiculous string table size: %d bytes", stabstrsize); | |
3253 | DBX_STRINGTAB (objfile) = (char *) | |
8b92e4d5 | 3254 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3255 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3256 | |
3257 | /* Now read in the string table in one big gulp. */ | |
3258 | ||
3259 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3260 | if (val < 0) | |
3261 | perror_with_name (name); | |
3a42e9d0 | 3262 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
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) | |
3277 | { | |
3278 | stabsize = bfd_section_size (sym_bfd, stabsects->section); | |
3279 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
3280 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3281 | } | |
3282 | else | |
3283 | { | |
3284 | struct stab_section_list *stabsect; | |
3285 | ||
3286 | DBX_SYMCOUNT (objfile) = 0; | |
3287 | for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next) | |
3288 | { | |
3289 | stabsize = bfd_section_size (sym_bfd, stabsect->section); | |
3290 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); | |
3291 | } | |
3292 | ||
3293 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3294 | ||
3295 | symbuf_sections = stabsects->next; | |
3296 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section); | |
3297 | symbuf_read = 0; | |
3298 | } | |
3299 | ||
96baa820 | 3300 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3301 | } |
3302 | \f | |
3303 | /* Scan and build partial symbols for an ELF symbol file. | |
fea25152 | 3304 | This ELF file has already been processed to get its minimal symbols. |
c906108c SS |
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). | |
086df311 | 3314 | STABSECT is the BFD section information for the .stab section. |
c906108c SS |
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 | |
fba45db2 | 3322 | elfstab_build_psymtabs (struct objfile *objfile, int mainline, |
086df311 | 3323 | asection *stabsect, |
fba45db2 | 3324 | file_ptr stabstroffset, unsigned int stabstrsize) |
c906108c SS |
3325 | { |
3326 | int val; | |
3327 | bfd *sym_bfd = objfile->obfd; | |
3328 | char *name = bfd_get_filename (sym_bfd); | |
3329 | struct dbx_symfile_info *info; | |
086df311 | 3330 | struct cleanup *back_to = NULL; |
c906108c SS |
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. */ | |
0a6ddd08 | 3334 | info = objfile->deprecated_sym_stab_info; |
c906108c | 3335 | |
7a292a7a SS |
3336 | /* Find the first and last text address. dbx_symfile_read seems to |
3337 | want this. */ | |
3338 | find_text_range (sym_bfd, objfile); | |
c906108c SS |
3339 | |
3340 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3341 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; |
086df311 DJ |
3342 | DBX_SYMCOUNT (objfile) |
3343 | = bfd_section_size (objfile->obfd, stabsect) / DBX_SYMBOL_SIZE (objfile); | |
c906108c | 3344 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
086df311 DJ |
3345 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; |
3346 | DBX_STAB_SECTION (objfile) = stabsect; | |
c5aa993b | 3347 | |
c906108c SS |
3348 | if (stabstrsize > bfd_get_size (sym_bfd)) |
3349 | error ("ridiculous string table size: %d bytes", stabstrsize); | |
3350 | DBX_STRINGTAB (objfile) = (char *) | |
8b92e4d5 | 3351 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3352 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3353 | |
3354 | /* Now read in the string table in one big gulp. */ | |
3355 | ||
3356 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3357 | if (val < 0) | |
3358 | perror_with_name (name); | |
3a42e9d0 | 3359 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
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 (); | |
c906108c SS |
3367 | |
3368 | processing_acc_compilation = 1; | |
3369 | ||
086df311 DJ |
3370 | symbuf_read = 0; |
3371 | symbuf_left = bfd_section_size (objfile->obfd, stabsect); | |
3372 | stabs_data = symfile_relocate_debug_section (objfile->obfd, stabsect, NULL); | |
3373 | if (stabs_data) | |
3374 | back_to = make_cleanup (free_current_contents, (void *) &stabs_data); | |
3375 | ||
c906108c SS |
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 | |
7134143f DJ |
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. */ | |
96baa820 | 3382 | dbx_symfile_read (objfile, 0); |
086df311 DJ |
3383 | |
3384 | if (back_to) | |
3385 | do_cleanups (back_to); | |
c906108c SS |
3386 | } |
3387 | \f | |
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 | |
c5aa993b | 3397 | of the text segment). |
c906108c | 3398 | MAINLINE is true if we are reading the main symbol table (as opposed to a |
c5aa993b | 3399 | shared lib or dynamically loaded file). |
c906108c SS |
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 | |
fba45db2 KB |
3406 | stabsect_build_psymtabs (struct objfile *objfile, int mainline, char *stab_name, |
3407 | char *stabstr_name, char *text_name) | |
c906108c SS |
3408 | { |
3409 | int val; | |
3410 | bfd *sym_bfd = objfile->obfd; | |
3411 | char *name = bfd_get_filename (sym_bfd); | |
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 | ||
0a6ddd08 | 3426 | objfile->deprecated_sym_stab_info = (struct dbx_symfile_info *) |
c906108c | 3427 | xmalloc (sizeof (struct dbx_symfile_info)); |
0a6ddd08 | 3428 | memset (objfile->deprecated_sym_stab_info, 0, sizeof (struct dbx_symfile_info)); |
c906108c SS |
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) = bfd_section_vma (sym_bfd, text_sect); | |
3434 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
3435 | ||
c5aa993b JM |
3436 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); |
3437 | DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect) | |
c906108c SS |
3438 | / DBX_SYMBOL_SIZE (objfile); |
3439 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect); | |
c5aa993b JM |
3440 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING INSIDE BFD DATA STRUCTURES */ |
3441 | ||
c906108c SS |
3442 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) |
3443 | error ("ridiculous string table size: %d bytes", DBX_STRINGTAB_SIZE (objfile)); | |
3444 | DBX_STRINGTAB (objfile) = (char *) | |
8b92e4d5 | 3445 | obstack_alloc (&objfile->objfile_obstack, DBX_STRINGTAB_SIZE (objfile) + 1); |
c906108c SS |
3446 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); |
3447 | ||
3448 | /* Now read in the string table in one big gulp. */ | |
3449 | ||
c5aa993b JM |
3450 | val = bfd_get_section_contents (sym_bfd, /* bfd */ |
3451 | stabstrsect, /* bfd section */ | |
3452 | DBX_STRINGTAB (objfile), /* input buffer */ | |
3453 | 0, /* offset into section */ | |
3454 | DBX_STRINGTAB_SIZE (objfile)); /* amount to read */ | |
c906108c SS |
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 (); | |
c906108c SS |
3463 | |
3464 | /* Now, do an incremental load */ | |
3465 | ||
3466 | processing_acc_compilation = 1; | |
96baa820 | 3467 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3468 | } |
3469 | \f | |
3470 | static struct sym_fns aout_sym_fns = | |
3471 | { | |
3472 | bfd_target_aout_flavour, | |
c5aa993b JM |
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 */ | |
96baa820 | 3477 | default_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
c5aa993b | 3478 | NULL /* next: pointer to next struct sym_fns */ |
c906108c SS |
3479 | }; |
3480 | ||
3481 | void | |
fba45db2 | 3482 | _initialize_dbxread (void) |
c906108c | 3483 | { |
c5aa993b | 3484 | add_symtab_fns (&aout_sym_fns); |
c906108c | 3485 | } |