Commit | Line | Data |
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c906108c | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
197e01b6 | 2 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
ccefe4c4 | 3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2008, 2009, 2010. |
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 | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 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 | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | /* This module provides three functions: dbx_symfile_init, | |
22 | which initializes to read a symbol file; dbx_new_init, which | |
23 | discards existing cached information when all symbols are being | |
24 | discarded; and dbx_symfile_read, which reads a symbol table | |
25 | from a file. | |
26 | ||
27 | dbx_symfile_read only does the minimum work necessary for letting the | |
28 | user "name" things symbolically; it does not read the entire symtab. | |
29 | Instead, it reads the external and static symbols and puts them in partial | |
30 | symbol tables. When more extensive information is requested of a | |
31 | file, the corresponding partial symbol table is mutated into a full | |
32 | fledged symbol table by going back and reading the symbols | |
33 | for real. dbx_psymtab_to_symtab() is the function that does this */ | |
34 | ||
35 | #include "defs.h" | |
36 | #include "gdb_string.h" | |
37 | ||
1f04aa62 | 38 | #if defined(__CYGNUSCLIB__) |
c906108c SS |
39 | #include <sys/types.h> |
40 | #include <fcntl.h> | |
41 | #endif | |
42 | ||
04ea0df1 | 43 | #include "gdb_obstack.h" |
c906108c | 44 | #include "gdb_stat.h" |
c906108c SS |
45 | #include "symtab.h" |
46 | #include "breakpoint.h" | |
c906108c SS |
47 | #include "target.h" |
48 | #include "gdbcore.h" /* for bfd stuff */ | |
c5aa993b | 49 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
c906108c SS |
50 | #include "objfiles.h" |
51 | #include "buildsym.h" | |
52 | #include "stabsread.h" | |
53 | #include "gdb-stabs.h" | |
54 | #include "demangle.h" | |
c906108c | 55 | #include "complaints.h" |
015a42b4 | 56 | #include "cp-abi.h" |
df8a16a1 | 57 | #include "cp-support.h" |
ccefe4c4 | 58 | #include "psympriv.h" |
91f54576 | 59 | |
7c8a5605 | 60 | #include "gdb_assert.h" |
91f54576 | 61 | #include "gdb_string.h" |
c906108c SS |
62 | |
63 | #include "aout/aout64.h" | |
64 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */ | |
c906108c | 65 | \f |
c5aa993b | 66 | |
c906108c SS |
67 | /* We put a pointer to this structure in the read_symtab_private field |
68 | of the psymtab. */ | |
69 | ||
c5aa993b JM |
70 | struct symloc |
71 | { | |
c5aa993b JM |
72 | /* Offset within the file symbol table of first local symbol for this |
73 | file. */ | |
c906108c | 74 | |
c5aa993b | 75 | int ldsymoff; |
c906108c | 76 | |
c5aa993b JM |
77 | /* Length (in bytes) of the section of the symbol table devoted to |
78 | this file's symbols (actually, the section bracketed may contain | |
79 | more than just this file's symbols). If ldsymlen is 0, the only | |
80 | reason for this thing's existence is the dependency list. Nothing | |
81 | else will happen when it is read in. */ | |
c906108c | 82 | |
c5aa993b | 83 | int ldsymlen; |
c906108c | 84 | |
c5aa993b | 85 | /* The size of each symbol in the symbol file (in external form). */ |
c906108c | 86 | |
c5aa993b | 87 | int symbol_size; |
c906108c | 88 | |
c5aa993b JM |
89 | /* Further information needed to locate the symbols if they are in |
90 | an ELF file. */ | |
c906108c | 91 | |
c5aa993b JM |
92 | int symbol_offset; |
93 | int string_offset; | |
94 | int file_string_offset; | |
95 | }; | |
c906108c SS |
96 | |
97 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) | |
98 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
99 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) | |
100 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
101 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
102 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
103 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
c906108c | 104 | \f |
c5aa993b | 105 | |
c906108c SS |
106 | /* Remember what we deduced to be the source language of this psymtab. */ |
107 | ||
108 | static enum language psymtab_language = language_unknown; | |
109 | ||
c906108c SS |
110 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
111 | ||
112 | static bfd *symfile_bfd; | |
113 | ||
114 | /* The size of each symbol in the symbol file (in external form). | |
115 | This is set by dbx_symfile_read when building psymtabs, and by | |
116 | dbx_psymtab_to_symtab when building symtabs. */ | |
117 | ||
118 | static unsigned symbol_size; | |
119 | ||
120 | /* This is the offset of the symbol table in the executable file. */ | |
121 | ||
122 | static unsigned symbol_table_offset; | |
123 | ||
124 | /* This is the offset of the string table in the executable file. */ | |
125 | ||
126 | static unsigned string_table_offset; | |
127 | ||
128 | /* For elf+stab executables, the n_strx field is not a simple index | |
129 | into the string table. Instead, each .o file has a base offset in | |
130 | the string table, and the associated symbols contain offsets from | |
131 | this base. The following two variables contain the base offset for | |
132 | the current and next .o files. */ | |
133 | ||
134 | static unsigned int file_string_table_offset; | |
135 | static unsigned int next_file_string_table_offset; | |
136 | ||
137 | /* .o and NLM files contain unrelocated addresses which are based at | |
138 | 0. When non-zero, this flag disables some of the special cases for | |
139 | Solaris elf+stab text addresses at location 0. */ | |
140 | ||
141 | static int symfile_relocatable = 0; | |
142 | ||
143 | /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are | |
144 | relative to the function start address. */ | |
145 | ||
146 | static int block_address_function_relative = 0; | |
147 | \f | |
148 | /* The lowest text address we have yet encountered. This is needed | |
149 | because in an a.out file, there is no header field which tells us | |
150 | what address the program is actually going to be loaded at, so we | |
151 | need to make guesses based on the symbols (which *are* relocated to | |
152 | reflect the address it will be loaded at). */ | |
153 | ||
154 | static CORE_ADDR lowest_text_address; | |
155 | ||
156 | /* Non-zero if there is any line number info in the objfile. Prevents | |
157 | end_psymtab from discarding an otherwise empty psymtab. */ | |
158 | ||
159 | static int has_line_numbers; | |
160 | ||
161 | /* Complaints about the symbols we have encountered. */ | |
162 | ||
23136709 KB |
163 | static void |
164 | unknown_symtype_complaint (const char *arg1) | |
165 | { | |
e2e0b3e5 | 166 | complaint (&symfile_complaints, _("unknown symbol type %s"), arg1); |
23136709 | 167 | } |
c906108c | 168 | |
23136709 KB |
169 | static void |
170 | lbrac_mismatch_complaint (int arg1) | |
171 | { | |
172 | complaint (&symfile_complaints, | |
e2e0b3e5 | 173 | _("N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d"), arg1); |
23136709 | 174 | } |
c906108c | 175 | |
23136709 KB |
176 | static void |
177 | repeated_header_complaint (const char *arg1, int arg2) | |
178 | { | |
179 | complaint (&symfile_complaints, | |
063e58ba MD |
180 | _("\"repeated\" header file %s not previously seen, at symtab \ |
181 | pos %d"), | |
23136709 KB |
182 | arg1, arg2); |
183 | } | |
1f077a3e | 184 | |
7a292a7a SS |
185 | /* find_text_range --- find start and end of loadable code sections |
186 | ||
187 | The find_text_range function finds the shortest address range that | |
188 | encloses all sections containing executable code, and stores it in | |
189 | objfile's text_addr and text_size members. | |
190 | ||
191 | dbx_symfile_read will use this to finish off the partial symbol | |
192 | table, in some cases. */ | |
193 | ||
194 | static void | |
c5aa993b | 195 | find_text_range (bfd * sym_bfd, struct objfile *objfile) |
7a292a7a SS |
196 | { |
197 | asection *sec; | |
198 | int found_any = 0; | |
b9179dbc EZ |
199 | CORE_ADDR start = 0; |
200 | CORE_ADDR end = 0; | |
c5aa993b | 201 | |
7a292a7a SS |
202 | for (sec = sym_bfd->sections; sec; sec = sec->next) |
203 | if (bfd_get_section_flags (sym_bfd, sec) & SEC_CODE) | |
204 | { | |
205 | CORE_ADDR sec_start = bfd_section_vma (sym_bfd, sec); | |
206 | CORE_ADDR sec_end = sec_start + bfd_section_size (sym_bfd, sec); | |
207 | ||
208 | if (found_any) | |
209 | { | |
c5aa993b JM |
210 | if (sec_start < start) |
211 | start = sec_start; | |
212 | if (sec_end > end) | |
213 | end = sec_end; | |
7a292a7a SS |
214 | } |
215 | else | |
216 | { | |
217 | start = sec_start; | |
218 | end = sec_end; | |
219 | } | |
220 | ||
221 | found_any = 1; | |
222 | } | |
223 | ||
c5aa993b | 224 | if (!found_any) |
8a3fe4f8 | 225 | error (_("Can't find any code sections in symbol file")); |
7a292a7a SS |
226 | |
227 | DBX_TEXT_ADDR (objfile) = start; | |
228 | DBX_TEXT_SIZE (objfile) = end - start; | |
229 | } | |
c5aa993b | 230 | \f |
7a292a7a SS |
231 | |
232 | ||
c906108c SS |
233 | /* During initial symbol readin, we need to have a structure to keep |
234 | track of which psymtabs have which bincls in them. This structure | |
235 | is used during readin to setup the list of dependencies within each | |
236 | partial symbol table. */ | |
237 | ||
238 | struct header_file_location | |
239 | { | |
240 | char *name; /* Name of header file */ | |
241 | int instance; /* See above */ | |
242 | struct partial_symtab *pst; /* Partial symtab that has the | |
243 | BINCL/EINCL defs for this file */ | |
244 | }; | |
245 | ||
246 | /* The actual list and controling variables */ | |
247 | static struct header_file_location *bincl_list, *next_bincl; | |
248 | static int bincls_allocated; | |
249 | ||
250 | /* Local function prototypes */ | |
251 | ||
a14ed312 | 252 | extern void _initialize_dbxread (void); |
392a587b | 253 | |
a14ed312 | 254 | static void read_ofile_symtab (struct partial_symtab *); |
c906108c | 255 | |
a14ed312 | 256 | static void dbx_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 257 | |
a14ed312 | 258 | static void dbx_psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 259 | |
a14ed312 | 260 | static void read_dbx_dynamic_symtab (struct objfile *objfile); |
c906108c | 261 | |
a14ed312 | 262 | static void read_dbx_symtab (struct objfile *); |
c906108c | 263 | |
a14ed312 | 264 | static void free_bincl_list (struct objfile *); |
c906108c | 265 | |
a14ed312 | 266 | static struct partial_symtab *find_corresponding_bincl_psymtab (char *, int); |
c906108c | 267 | |
a14ed312 | 268 | static void add_bincl_to_list (struct partial_symtab *, char *, int); |
c906108c | 269 | |
a14ed312 | 270 | static void init_bincl_list (int, struct objfile *); |
c906108c | 271 | |
a14ed312 | 272 | static char *dbx_next_symbol_text (struct objfile *); |
c906108c | 273 | |
a14ed312 | 274 | static void fill_symbuf (bfd *); |
c906108c | 275 | |
a14ed312 | 276 | static void dbx_symfile_init (struct objfile *); |
c906108c | 277 | |
a14ed312 | 278 | static void dbx_new_init (struct objfile *); |
c906108c | 279 | |
a14ed312 | 280 | static void dbx_symfile_read (struct objfile *, int); |
c906108c | 281 | |
a14ed312 | 282 | static void dbx_symfile_finish (struct objfile *); |
c906108c | 283 | |
a14ed312 | 284 | static void record_minimal_symbol (char *, CORE_ADDR, int, struct objfile *); |
c906108c | 285 | |
a14ed312 | 286 | static void add_new_header_file (char *, int); |
c906108c | 287 | |
a14ed312 | 288 | static void add_old_header_file (char *, int); |
c906108c | 289 | |
a14ed312 | 290 | static void add_this_object_header_file (int); |
c906108c | 291 | |
a14ed312 KB |
292 | static struct partial_symtab *start_psymtab (struct objfile *, char *, |
293 | CORE_ADDR, int, | |
294 | struct partial_symbol **, | |
295 | struct partial_symbol **); | |
d4f3574e | 296 | |
c906108c SS |
297 | /* Free up old header file tables */ |
298 | ||
d3d55eeb | 299 | void |
fba45db2 | 300 | free_header_files (void) |
c906108c SS |
301 | { |
302 | if (this_object_header_files) | |
303 | { | |
b8c9b27d | 304 | xfree (this_object_header_files); |
c906108c SS |
305 | this_object_header_files = NULL; |
306 | } | |
307 | n_allocated_this_object_header_files = 0; | |
308 | } | |
309 | ||
310 | /* Allocate new header file tables */ | |
311 | ||
d3d55eeb | 312 | void |
fba45db2 | 313 | init_header_files (void) |
c906108c SS |
314 | { |
315 | n_allocated_this_object_header_files = 10; | |
316 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); | |
317 | } | |
318 | ||
319 | /* Add header file number I for this object file | |
320 | at the next successive FILENUM. */ | |
321 | ||
322 | static void | |
fba45db2 | 323 | add_this_object_header_file (int i) |
c906108c SS |
324 | { |
325 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
326 | { | |
327 | n_allocated_this_object_header_files *= 2; | |
328 | this_object_header_files | |
329 | = (int *) xrealloc ((char *) this_object_header_files, | |
c5aa993b | 330 | n_allocated_this_object_header_files * sizeof (int)); |
c906108c SS |
331 | } |
332 | ||
333 | this_object_header_files[n_this_object_header_files++] = i; | |
334 | } | |
335 | ||
336 | /* Add to this file an "old" header file, one already seen in | |
337 | a previous object file. NAME is the header file's name. | |
338 | INSTANCE is its instance code, to select among multiple | |
339 | symbol tables for the same header file. */ | |
340 | ||
341 | static void | |
fba45db2 | 342 | add_old_header_file (char *name, int instance) |
c906108c | 343 | { |
52f0bd74 AC |
344 | struct header_file *p = HEADER_FILES (current_objfile); |
345 | int i; | |
c906108c SS |
346 | |
347 | for (i = 0; i < N_HEADER_FILES (current_objfile); i++) | |
6314a349 | 348 | if (strcmp (p[i].name, name) == 0 && instance == p[i].instance) |
c906108c SS |
349 | { |
350 | add_this_object_header_file (i); | |
351 | return; | |
352 | } | |
23136709 | 353 | repeated_header_complaint (name, symnum); |
c906108c SS |
354 | } |
355 | ||
356 | /* Add to this file a "new" header file: definitions for its types follow. | |
357 | NAME is the header file's name. | |
358 | Most often this happens only once for each distinct header file, | |
359 | but not necessarily. If it happens more than once, INSTANCE has | |
360 | a different value each time, and references to the header file | |
361 | use INSTANCE values to select among them. | |
362 | ||
363 | dbx output contains "begin" and "end" markers for each new header file, | |
364 | but at this level we just need to know which files there have been; | |
365 | so we record the file when its "begin" is seen and ignore the "end". */ | |
366 | ||
367 | static void | |
fba45db2 | 368 | add_new_header_file (char *name, int instance) |
c906108c | 369 | { |
52f0bd74 AC |
370 | int i; |
371 | struct header_file *hfile; | |
c906108c SS |
372 | |
373 | /* Make sure there is room for one more header file. */ | |
374 | ||
375 | i = N_ALLOCATED_HEADER_FILES (current_objfile); | |
376 | ||
377 | if (N_HEADER_FILES (current_objfile) == i) | |
378 | { | |
379 | if (i == 0) | |
380 | { | |
381 | N_ALLOCATED_HEADER_FILES (current_objfile) = 10; | |
382 | HEADER_FILES (current_objfile) = (struct header_file *) | |
383 | xmalloc (10 * sizeof (struct header_file)); | |
384 | } | |
385 | else | |
386 | { | |
387 | i *= 2; | |
388 | N_ALLOCATED_HEADER_FILES (current_objfile) = i; | |
389 | HEADER_FILES (current_objfile) = (struct header_file *) | |
390 | xrealloc ((char *) HEADER_FILES (current_objfile), | |
391 | (i * sizeof (struct header_file))); | |
392 | } | |
393 | } | |
394 | ||
395 | /* Create an entry for this header file. */ | |
396 | ||
397 | i = N_HEADER_FILES (current_objfile)++; | |
398 | hfile = HEADER_FILES (current_objfile) + i; | |
1b36a34b | 399 | hfile->name = xstrdup (name); |
c906108c SS |
400 | hfile->instance = instance; |
401 | hfile->length = 10; | |
402 | hfile->vector | |
403 | = (struct type **) xmalloc (10 * sizeof (struct type *)); | |
404 | memset (hfile->vector, 0, 10 * sizeof (struct type *)); | |
405 | ||
406 | add_this_object_header_file (i); | |
407 | } | |
408 | ||
409 | #if 0 | |
410 | static struct type ** | |
fba45db2 | 411 | explicit_lookup_type (int real_filenum, int index) |
c906108c | 412 | { |
52f0bd74 | 413 | struct header_file *f = &HEADER_FILES (current_objfile)[real_filenum]; |
c906108c SS |
414 | |
415 | if (index >= f->length) | |
416 | { | |
417 | f->length *= 2; | |
418 | f->vector = (struct type **) | |
419 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
420 | memset (&f->vector[f->length / 2], | |
c5aa993b | 421 | '\0', f->length * sizeof (struct type *) / 2); |
c906108c SS |
422 | } |
423 | return &f->vector[index]; | |
424 | } | |
425 | #endif | |
426 | \f | |
427 | static void | |
fba45db2 KB |
428 | record_minimal_symbol (char *name, CORE_ADDR address, int type, |
429 | struct objfile *objfile) | |
c906108c SS |
430 | { |
431 | enum minimal_symbol_type ms_type; | |
432 | int section; | |
433 | asection *bfd_section; | |
434 | ||
435 | switch (type) | |
436 | { | |
437 | case N_TEXT | N_EXT: | |
438 | ms_type = mst_text; | |
b8fbeb18 | 439 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
440 | bfd_section = DBX_TEXT_SECTION (objfile); |
441 | break; | |
442 | case N_DATA | N_EXT: | |
443 | ms_type = mst_data; | |
b8fbeb18 | 444 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
445 | bfd_section = DBX_DATA_SECTION (objfile); |
446 | break; | |
447 | case N_BSS | N_EXT: | |
448 | ms_type = mst_bss; | |
b8fbeb18 | 449 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
450 | bfd_section = DBX_BSS_SECTION (objfile); |
451 | break; | |
452 | case N_ABS | N_EXT: | |
453 | ms_type = mst_abs; | |
454 | section = -1; | |
455 | bfd_section = NULL; | |
456 | break; | |
457 | #ifdef N_SETV | |
458 | case N_SETV | N_EXT: | |
459 | ms_type = mst_data; | |
b8fbeb18 | 460 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
461 | bfd_section = DBX_DATA_SECTION (objfile); |
462 | break; | |
463 | case N_SETV: | |
464 | /* I don't think this type actually exists; since a N_SETV is the result | |
c5aa993b JM |
465 | of going over many .o files, it doesn't make sense to have one |
466 | file local. */ | |
c906108c | 467 | ms_type = mst_file_data; |
b8fbeb18 | 468 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
469 | bfd_section = DBX_DATA_SECTION (objfile); |
470 | break; | |
471 | #endif | |
472 | case N_TEXT: | |
473 | case N_NBTEXT: | |
474 | case N_FN: | |
475 | case N_FN_SEQ: | |
476 | ms_type = mst_file_text; | |
b8fbeb18 | 477 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
478 | bfd_section = DBX_TEXT_SECTION (objfile); |
479 | break; | |
480 | case N_DATA: | |
481 | ms_type = mst_file_data; | |
482 | ||
483 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
c5aa993b JM |
484 | Record it as global even if it's local, not global, so |
485 | lookup_minimal_symbol can find it. We don't check symbol_leading_char | |
486 | because for SunOS4 it always is '_'. */ | |
91f54576 | 487 | if (name[8] == 'C' && strcmp ("__DYNAMIC", name) == 0) |
c906108c SS |
488 | ms_type = mst_data; |
489 | ||
490 | /* Same with virtual function tables, both global and static. */ | |
491 | { | |
492 | char *tempstring = name; | |
493 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) | |
494 | ++tempstring; | |
015a42b4 | 495 | if (is_vtable_name (tempstring)) |
c906108c SS |
496 | ms_type = mst_data; |
497 | } | |
b8fbeb18 | 498 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
499 | bfd_section = DBX_DATA_SECTION (objfile); |
500 | break; | |
501 | case N_BSS: | |
502 | ms_type = mst_file_bss; | |
b8fbeb18 | 503 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
504 | bfd_section = DBX_BSS_SECTION (objfile); |
505 | break; | |
506 | default: | |
507 | ms_type = mst_unknown; | |
508 | section = -1; | |
509 | bfd_section = NULL; | |
510 | break; | |
c5aa993b | 511 | } |
c906108c SS |
512 | |
513 | if ((ms_type == mst_file_text || ms_type == mst_text) | |
514 | && address < lowest_text_address) | |
515 | lowest_text_address = address; | |
516 | ||
517 | prim_record_minimal_symbol_and_info | |
b887350f | 518 | (name, address, ms_type, section, bfd_section, objfile); |
c906108c SS |
519 | } |
520 | \f | |
521 | /* Scan and build partial symbols for a symbol file. | |
522 | We have been initialized by a call to dbx_symfile_init, which | |
523 | put all the relevant info into a "struct dbx_symfile_info", | |
f4352531 | 524 | hung off the objfile structure. */ |
c906108c SS |
525 | |
526 | static void | |
f4352531 | 527 | dbx_symfile_read (struct objfile *objfile, int symfile_flags) |
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 | ||
de1d8fb9 TG |
557 | /* Size the symbol table. */ |
558 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) | |
c906108c SS |
559 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); |
560 | ||
561 | symbol_size = DBX_SYMBOL_SIZE (objfile); | |
562 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
563 | ||
564 | free_pending_blocks (); | |
a0b3c4fd | 565 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c SS |
566 | |
567 | init_minimal_symbol_collection (); | |
56e290f4 | 568 | make_cleanup_discard_minimal_symbols (); |
c906108c | 569 | |
d4f3574e | 570 | /* Read stabs data from executable file and define symbols. */ |
c906108c | 571 | |
d4f3574e | 572 | read_dbx_symtab (objfile); |
c906108c SS |
573 | |
574 | /* Add the dynamic symbols. */ | |
575 | ||
96baa820 | 576 | read_dbx_dynamic_symtab (objfile); |
c906108c SS |
577 | |
578 | /* Install any minimal symbols that have been collected as the current | |
579 | minimal symbols for this objfile. */ | |
580 | ||
581 | install_minimal_symbols (objfile); | |
582 | ||
583 | do_cleanups (back_to); | |
584 | } | |
585 | ||
586 | /* Initialize anything that needs initializing when a completely new | |
587 | symbol file is specified (not just adding some symbols from another | |
588 | file, e.g. a shared library). */ | |
589 | ||
590 | static void | |
fba45db2 | 591 | dbx_new_init (struct objfile *ignore) |
c906108c SS |
592 | { |
593 | stabsread_new_init (); | |
594 | buildsym_new_init (); | |
595 | init_header_files (); | |
596 | } | |
597 | ||
598 | ||
599 | /* dbx_symfile_init () | |
600 | is the dbx-specific initialization routine for reading symbols. | |
601 | It is passed a struct objfile which contains, among other things, | |
602 | the BFD for the file whose symbols are being read, and a slot for a pointer | |
603 | to "private data" which we fill with goodies. | |
604 | ||
605 | We read the string table into malloc'd space and stash a pointer to it. | |
606 | ||
607 | Since BFD doesn't know how to read debug symbols in a format-independent | |
608 | way (and may never do so...), we have to do it ourselves. We will never | |
609 | be called unless this is an a.out (or very similar) file. | |
610 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
611 | ||
c5aa993b | 612 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
c906108c SS |
613 | |
614 | static void | |
fba45db2 | 615 | dbx_symfile_init (struct objfile *objfile) |
c906108c SS |
616 | { |
617 | int val; | |
618 | bfd *sym_bfd = objfile->obfd; | |
619 | char *name = bfd_get_filename (sym_bfd); | |
620 | asection *text_sect; | |
621 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; | |
622 | ||
623 | /* Allocate struct to keep track of the symfile */ | |
0a6ddd08 | 624 | objfile->deprecated_sym_stab_info = (struct dbx_symfile_info *) |
7936743b | 625 | xmalloc (sizeof (struct dbx_symfile_info)); |
063e58ba MD |
626 | memset (objfile->deprecated_sym_stab_info, 0, |
627 | sizeof (struct dbx_symfile_info)); | |
c906108c SS |
628 | |
629 | DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
630 | DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data"); | |
631 | DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss"); | |
632 | ||
633 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
634 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) | |
635 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
636 | ||
637 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
638 | ||
639 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; | |
c5aa993b | 640 | |
c906108c SS |
641 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
642 | if (!text_sect) | |
8a3fe4f8 | 643 | error (_("Can't find .text section in symbol file")); |
c906108c SS |
644 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
645 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
646 | ||
647 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); | |
648 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); | |
649 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; | |
650 | ||
8b92e4d5 EZ |
651 | /* Read the string table and stash it away in the objfile_obstack. |
652 | When we blow away the objfile the string table goes away as well. | |
c906108c SS |
653 | Note that gdb used to use the results of attempting to malloc the |
654 | string table, based on the size it read, as a form of sanity check | |
655 | for botched byte swapping, on the theory that a byte swapped string | |
656 | table size would be so totally bogus that the malloc would fail. Now | |
8b92e4d5 | 657 | that we put in on the objfile_obstack, we can't do this since gdb gets |
c906108c SS |
658 | a fatal error (out of virtual memory) if the size is bogus. We can |
659 | however at least check to see if the size is less than the size of | |
660 | the size field itself, or larger than the size of the entire file. | |
661 | Note that all valid string tables have a size greater than zero, since | |
662 | the bytes used to hold the size are included in the count. */ | |
663 | ||
664 | if (STRING_TABLE_OFFSET == 0) | |
665 | { | |
666 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET | |
c5aa993b JM |
667 | will never be zero, even when there is no string table. This |
668 | would appear to be a bug in bfd. */ | |
c906108c SS |
669 | DBX_STRINGTAB_SIZE (objfile) = 0; |
670 | DBX_STRINGTAB (objfile) = NULL; | |
671 | } | |
672 | else | |
673 | { | |
674 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); | |
675 | if (val < 0) | |
676 | perror_with_name (name); | |
c5aa993b | 677 | |
4efb68b1 AC |
678 | memset (size_temp, 0, sizeof (size_temp)); |
679 | val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd); | |
c906108c SS |
680 | if (val < 0) |
681 | { | |
682 | perror_with_name (name); | |
683 | } | |
684 | else if (val == 0) | |
685 | { | |
686 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
687 | EOF if there is no string table, and attempting to read the size | |
688 | from EOF will read zero bytes. */ | |
689 | DBX_STRINGTAB_SIZE (objfile) = 0; | |
690 | DBX_STRINGTAB (objfile) = NULL; | |
691 | } | |
692 | else | |
693 | { | |
694 | /* Read some data that would appear to be the string table size. | |
695 | If there really is a string table, then it is probably the right | |
696 | size. Byteswap if necessary and validate the size. Note that | |
697 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
698 | random data that happened to be at STRING_TABLE_OFFSET, because | |
699 | bfd can't tell us there is no string table, the sanity checks may | |
700 | or may not catch this. */ | |
701 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); | |
c5aa993b | 702 | |
c906108c SS |
703 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) |
704 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
8a3fe4f8 | 705 | error (_("ridiculous string table size (%d bytes)."), |
c906108c | 706 | DBX_STRINGTAB_SIZE (objfile)); |
c5aa993b | 707 | |
c906108c | 708 | DBX_STRINGTAB (objfile) = |
8b92e4d5 | 709 | (char *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
710 | DBX_STRINGTAB_SIZE (objfile)); |
711 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); | |
c5aa993b | 712 | |
c906108c | 713 | /* Now read in the string table in one big gulp. */ |
c5aa993b | 714 | |
c906108c SS |
715 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
716 | if (val < 0) | |
717 | perror_with_name (name); | |
3a42e9d0 AM |
718 | val = bfd_bread (DBX_STRINGTAB (objfile), |
719 | DBX_STRINGTAB_SIZE (objfile), | |
720 | sym_bfd); | |
c906108c SS |
721 | if (val != DBX_STRINGTAB_SIZE (objfile)) |
722 | perror_with_name (name); | |
723 | } | |
724 | } | |
725 | } | |
726 | ||
727 | /* Perform any local cleanups required when we are done with a particular | |
728 | objfile. I.E, we are in the process of discarding all symbol information | |
729 | for an objfile, freeing up all memory held for it, and unlinking the | |
730 | objfile struct from the global list of known objfiles. */ | |
731 | ||
732 | static void | |
fba45db2 | 733 | dbx_symfile_finish (struct objfile *objfile) |
c906108c | 734 | { |
0a6ddd08 | 735 | if (objfile->deprecated_sym_stab_info != NULL) |
c906108c SS |
736 | { |
737 | if (HEADER_FILES (objfile) != NULL) | |
738 | { | |
aa1ee363 AC |
739 | int i = N_HEADER_FILES (objfile); |
740 | struct header_file *hfiles = HEADER_FILES (objfile); | |
c906108c SS |
741 | |
742 | while (--i >= 0) | |
743 | { | |
b8c9b27d KB |
744 | xfree (hfiles[i].name); |
745 | xfree (hfiles[i].vector); | |
c906108c | 746 | } |
b8c9b27d | 747 | xfree (hfiles); |
c906108c | 748 | } |
0a6ddd08 | 749 | xfree (objfile->deprecated_sym_stab_info); |
c906108c SS |
750 | } |
751 | free_header_files (); | |
752 | } | |
c906108c | 753 | \f |
c5aa993b | 754 | |
c906108c SS |
755 | /* Buffer for reading the symbol table entries. */ |
756 | static struct external_nlist symbuf[4096]; | |
757 | static int symbuf_idx; | |
758 | static int symbuf_end; | |
759 | ||
c906108c SS |
760 | /* Name of last function encountered. Used in Solaris to approximate |
761 | object file boundaries. */ | |
762 | static char *last_function_name; | |
763 | ||
764 | /* The address in memory of the string table of the object file we are | |
765 | reading (which might not be the "main" object file, but might be a | |
766 | shared library or some other dynamically loaded thing). This is | |
767 | set by read_dbx_symtab when building psymtabs, and by | |
768 | read_ofile_symtab when building symtabs, and is used only by | |
769 | next_symbol_text. FIXME: If that is true, we don't need it when | |
770 | building psymtabs, right? */ | |
771 | static char *stringtab_global; | |
772 | ||
773 | /* These variables are used to control fill_symbuf when the stabs | |
774 | symbols are not contiguous (as may be the case when a COFF file is | |
775 | linked using --split-by-reloc). */ | |
776 | static struct stab_section_list *symbuf_sections; | |
777 | static unsigned int symbuf_left; | |
778 | static unsigned int symbuf_read; | |
779 | ||
086df311 DJ |
780 | /* This variable stores a global stabs buffer, if we read stabs into |
781 | memory in one chunk in order to process relocations. */ | |
782 | static bfd_byte *stabs_data; | |
783 | ||
c906108c SS |
784 | /* Refill the symbol table input buffer |
785 | and set the variables that control fetching entries from it. | |
786 | Reports an error if no data available. | |
787 | This function can read past the end of the symbol table | |
788 | (into the string table) but this does no harm. */ | |
789 | ||
790 | static void | |
fba45db2 | 791 | fill_symbuf (bfd *sym_bfd) |
c906108c SS |
792 | { |
793 | unsigned int count; | |
794 | int nbytes; | |
795 | ||
086df311 DJ |
796 | if (stabs_data) |
797 | { | |
798 | nbytes = sizeof (symbuf); | |
799 | if (nbytes > symbuf_left) | |
800 | nbytes = symbuf_left; | |
801 | memcpy (symbuf, stabs_data + symbuf_read, nbytes); | |
802 | } | |
803 | else if (symbuf_sections == NULL) | |
804 | { | |
805 | count = sizeof (symbuf); | |
806 | nbytes = bfd_bread (symbuf, count, sym_bfd); | |
807 | } | |
c906108c SS |
808 | else |
809 | { | |
810 | if (symbuf_left <= 0) | |
811 | { | |
812 | file_ptr filepos = symbuf_sections->section->filepos; | |
813 | if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0) | |
814 | perror_with_name (bfd_get_filename (sym_bfd)); | |
815 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section); | |
816 | symbol_table_offset = filepos - symbuf_read; | |
817 | symbuf_sections = symbuf_sections->next; | |
818 | } | |
819 | ||
820 | count = symbuf_left; | |
821 | if (count > sizeof (symbuf)) | |
822 | count = sizeof (symbuf); | |
086df311 | 823 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
c906108c SS |
824 | } |
825 | ||
c906108c SS |
826 | if (nbytes < 0) |
827 | perror_with_name (bfd_get_filename (sym_bfd)); | |
828 | else if (nbytes == 0) | |
8a3fe4f8 | 829 | error (_("Premature end of file reading symbol table")); |
c906108c SS |
830 | symbuf_end = nbytes / symbol_size; |
831 | symbuf_idx = 0; | |
832 | symbuf_left -= nbytes; | |
833 | symbuf_read += nbytes; | |
834 | } | |
835 | ||
086df311 DJ |
836 | static void |
837 | stabs_seek (int sym_offset) | |
838 | { | |
839 | if (stabs_data) | |
840 | { | |
841 | symbuf_read += sym_offset; | |
842 | symbuf_left -= sym_offset; | |
843 | } | |
844 | else | |
845 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); | |
846 | } | |
847 | ||
c906108c SS |
848 | #define INTERNALIZE_SYMBOL(intern, extern, abfd) \ |
849 | { \ | |
c906108c | 850 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \ |
83b94be5 AM |
851 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \ |
852 | (intern).n_other = 0; \ | |
c906108c | 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 * | |
83b94be5 | 960 | set_namestring (struct objfile *objfile, const struct internal_nlist *nlist) |
6a34fd2f EZ |
961 | { |
962 | char *namestring; | |
963 | ||
5409dacf JK |
964 | if (nlist->n_strx + file_string_table_offset |
965 | >= DBX_STRINGTAB_SIZE (objfile) | |
966 | || nlist->n_strx + file_string_table_offset < nlist->n_strx) | |
6a34fd2f | 967 | { |
e2e0b3e5 | 968 | complaint (&symfile_complaints, _("bad string table offset in symbol %d"), |
23136709 | 969 | symnum); |
6a34fd2f EZ |
970 | namestring = "<bad string table offset>"; |
971 | } | |
972 | else | |
83b94be5 AM |
973 | namestring = (nlist->n_strx + file_string_table_offset |
974 | + DBX_STRINGTAB (objfile)); | |
6a34fd2f EZ |
975 | return namestring; |
976 | } | |
977 | ||
c906108c SS |
978 | /* Scan a SunOs dynamic symbol table for symbols of interest and |
979 | add them to the minimal symbol table. */ | |
980 | ||
981 | static void | |
fba45db2 | 982 | read_dbx_dynamic_symtab (struct objfile *objfile) |
c906108c SS |
983 | { |
984 | bfd *abfd = objfile->obfd; | |
985 | struct cleanup *back_to; | |
986 | int counter; | |
987 | long dynsym_size; | |
988 | long dynsym_count; | |
989 | asymbol **dynsyms; | |
990 | asymbol **symptr; | |
991 | arelent **relptr; | |
992 | long dynrel_size; | |
993 | long dynrel_count; | |
994 | arelent **dynrels; | |
995 | CORE_ADDR sym_value; | |
996 | char *name; | |
997 | ||
998 | /* Check that the symbol file has dynamic symbols that we know about. | |
999 | bfd_arch_unknown can happen if we are reading a sun3 symbol file | |
1000 | on a sun4 host (and vice versa) and bfd is not configured | |
1001 | --with-target=all. This would trigger an assertion in bfd/sunos.c, | |
1002 | so we ignore the dynamic symbols in this case. */ | |
1003 | if (bfd_get_flavour (abfd) != bfd_target_aout_flavour | |
1004 | || (bfd_get_file_flags (abfd) & DYNAMIC) == 0 | |
1005 | || bfd_get_arch (abfd) == bfd_arch_unknown) | |
1006 | return; | |
1007 | ||
1008 | dynsym_size = bfd_get_dynamic_symtab_upper_bound (abfd); | |
1009 | if (dynsym_size < 0) | |
1010 | return; | |
1011 | ||
1012 | dynsyms = (asymbol **) xmalloc (dynsym_size); | |
b8c9b27d | 1013 | back_to = make_cleanup (xfree, dynsyms); |
c906108c SS |
1014 | |
1015 | dynsym_count = bfd_canonicalize_dynamic_symtab (abfd, dynsyms); | |
1016 | if (dynsym_count < 0) | |
1017 | { | |
1018 | do_cleanups (back_to); | |
1019 | return; | |
1020 | } | |
1021 | ||
1022 | /* Enter dynamic symbols into the minimal symbol table | |
1023 | if this is a stripped executable. */ | |
1024 | if (bfd_get_symcount (abfd) <= 0) | |
1025 | { | |
1026 | symptr = dynsyms; | |
1027 | for (counter = 0; counter < dynsym_count; counter++, symptr++) | |
1028 | { | |
1029 | asymbol *sym = *symptr; | |
1030 | asection *sec; | |
1031 | int type; | |
1032 | ||
1033 | sec = bfd_get_section (sym); | |
1034 | ||
1035 | /* BFD symbols are section relative. */ | |
1036 | sym_value = sym->value + sec->vma; | |
1037 | ||
1038 | if (bfd_get_section_flags (abfd, sec) & SEC_CODE) | |
1039 | { | |
063e58ba MD |
1040 | sym_value += ANOFFSET (objfile->section_offsets, |
1041 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1042 | type = N_TEXT; |
1043 | } | |
1044 | else if (bfd_get_section_flags (abfd, sec) & SEC_DATA) | |
1045 | { | |
063e58ba MD |
1046 | sym_value += ANOFFSET (objfile->section_offsets, |
1047 | SECT_OFF_DATA (objfile)); | |
c906108c SS |
1048 | type = N_DATA; |
1049 | } | |
1050 | else if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) | |
1051 | { | |
063e58ba MD |
1052 | sym_value += ANOFFSET (objfile->section_offsets, |
1053 | SECT_OFF_BSS (objfile)); | |
c906108c SS |
1054 | type = N_BSS; |
1055 | } | |
1056 | else | |
1057 | continue; | |
1058 | ||
1059 | if (sym->flags & BSF_GLOBAL) | |
1060 | type |= N_EXT; | |
1061 | ||
1062 | record_minimal_symbol ((char *) bfd_asymbol_name (sym), sym_value, | |
1063 | type, objfile); | |
1064 | } | |
1065 | } | |
1066 | ||
1067 | /* Symbols from shared libraries have a dynamic relocation entry | |
1068 | that points to the associated slot in the procedure linkage table. | |
1069 | We make a mininal symbol table entry with type mst_solib_trampoline | |
1070 | at the address in the procedure linkage table. */ | |
1071 | dynrel_size = bfd_get_dynamic_reloc_upper_bound (abfd); | |
1072 | if (dynrel_size < 0) | |
1073 | { | |
1074 | do_cleanups (back_to); | |
1075 | return; | |
1076 | } | |
c5aa993b | 1077 | |
c906108c | 1078 | dynrels = (arelent **) xmalloc (dynrel_size); |
b8c9b27d | 1079 | make_cleanup (xfree, dynrels); |
c906108c SS |
1080 | |
1081 | dynrel_count = bfd_canonicalize_dynamic_reloc (abfd, dynrels, dynsyms); | |
1082 | if (dynrel_count < 0) | |
1083 | { | |
1084 | do_cleanups (back_to); | |
1085 | return; | |
1086 | } | |
1087 | ||
1088 | for (counter = 0, relptr = dynrels; | |
1089 | counter < dynrel_count; | |
1090 | counter++, relptr++) | |
1091 | { | |
1092 | arelent *rel = *relptr; | |
1093 | CORE_ADDR address = | |
063e58ba MD |
1094 | rel->address + ANOFFSET (objfile->section_offsets, |
1095 | SECT_OFF_DATA (objfile)); | |
c906108c SS |
1096 | |
1097 | switch (bfd_get_arch (abfd)) | |
1098 | { | |
1099 | case bfd_arch_sparc: | |
1100 | if (rel->howto->type != RELOC_JMP_SLOT) | |
1101 | continue; | |
1102 | break; | |
1103 | case bfd_arch_m68k: | |
1104 | /* `16' is the type BFD produces for a jump table relocation. */ | |
1105 | if (rel->howto->type != 16) | |
1106 | continue; | |
1107 | ||
1108 | /* Adjust address in the jump table to point to | |
1109 | the start of the bsr instruction. */ | |
1110 | address -= 2; | |
1111 | break; | |
1112 | default: | |
1113 | continue; | |
1114 | } | |
1115 | ||
1116 | name = (char *) bfd_asymbol_name (*rel->sym_ptr_ptr); | |
1117 | prim_record_minimal_symbol (name, address, mst_solib_trampoline, | |
1118 | objfile); | |
1119 | } | |
1120 | ||
1121 | do_cleanups (back_to); | |
1122 | } | |
1123 | ||
a78f21af | 1124 | static CORE_ADDR |
4867e41e DM |
1125 | find_stab_function_addr (char *namestring, char *filename, |
1126 | struct objfile *objfile) | |
1127 | { | |
1128 | struct minimal_symbol *msym; | |
1129 | char *p; | |
1130 | int n; | |
1131 | ||
1132 | p = strchr (namestring, ':'); | |
1133 | if (p == NULL) | |
1134 | p = namestring; | |
1135 | n = p - namestring; | |
1136 | p = alloca (n + 2); | |
1137 | strncpy (p, namestring, n); | |
1138 | p[n] = 0; | |
1139 | ||
1140 | msym = lookup_minimal_symbol (p, filename, objfile); | |
1141 | if (msym == NULL) | |
1142 | { | |
1143 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
1144 | try again with an appended underscore if the minimal symbol | |
1145 | was not found. */ | |
1146 | p[n] = '_'; | |
1147 | p[n + 1] = 0; | |
1148 | msym = lookup_minimal_symbol (p, filename, objfile); | |
1149 | } | |
1150 | ||
1151 | if (msym == NULL && filename != NULL) | |
1152 | { | |
1153 | /* Try again without the filename. */ | |
1154 | p[n] = 0; | |
1155 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
1156 | } | |
1157 | if (msym == NULL && filename != NULL) | |
1158 | { | |
1159 | /* And try again for Sun Fortran, but without the filename. */ | |
1160 | p[n] = '_'; | |
1161 | p[n + 1] = 0; | |
1162 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
1163 | } | |
1164 | ||
1165 | return msym == NULL ? 0 : SYMBOL_VALUE_ADDRESS (msym); | |
1166 | } | |
4867e41e | 1167 | |
23136709 KB |
1168 | static void |
1169 | function_outside_compilation_unit_complaint (const char *arg1) | |
1170 | { | |
1171 | complaint (&symfile_complaints, | |
063e58ba MD |
1172 | _("function `%s' appears to be defined outside of all compilation \ |
1173 | units"), | |
23136709 KB |
1174 | arg1); |
1175 | } | |
1176 | ||
d4f3574e SS |
1177 | /* Setup partial_symtab's describing each source file for which |
1178 | debugging information is available. */ | |
c906108c SS |
1179 | |
1180 | static void | |
fba45db2 | 1181 | read_dbx_symtab (struct objfile *objfile) |
c906108c | 1182 | { |
5e2b427d | 1183 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 1184 | struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
c906108c | 1185 | struct internal_nlist nlist; |
d4f3574e SS |
1186 | CORE_ADDR text_addr; |
1187 | int text_size; | |
71c25dea TT |
1188 | char *sym_name; |
1189 | int sym_len; | |
c906108c | 1190 | |
52f0bd74 | 1191 | char *namestring; |
c906108c SS |
1192 | int nsl; |
1193 | int past_first_source_file = 0; | |
1194 | CORE_ADDR last_o_file_start = 0; | |
1195 | CORE_ADDR last_function_start = 0; | |
1196 | struct cleanup *back_to; | |
1197 | bfd *abfd; | |
1198 | int textlow_not_set; | |
7c8a5605 | 1199 | int data_sect_index; |
c906108c SS |
1200 | |
1201 | /* Current partial symtab */ | |
1202 | struct partial_symtab *pst; | |
1203 | ||
1204 | /* List of current psymtab's include files */ | |
1205 | char **psymtab_include_list; | |
1206 | int includes_allocated; | |
1207 | int includes_used; | |
1208 | ||
1209 | /* Index within current psymtab dependency list */ | |
1210 | struct partial_symtab **dependency_list; | |
1211 | int dependencies_used, dependencies_allocated; | |
1212 | ||
d4f3574e SS |
1213 | text_addr = DBX_TEXT_ADDR (objfile); |
1214 | text_size = DBX_TEXT_SIZE (objfile); | |
1215 | ||
c906108c SS |
1216 | /* FIXME. We probably want to change stringtab_global rather than add this |
1217 | while processing every symbol entry. FIXME. */ | |
1218 | file_string_table_offset = 0; | |
1219 | next_file_string_table_offset = 0; | |
1220 | ||
1221 | stringtab_global = DBX_STRINGTAB (objfile); | |
c5aa993b | 1222 | |
c906108c SS |
1223 | pst = (struct partial_symtab *) 0; |
1224 | ||
1225 | includes_allocated = 30; | |
1226 | includes_used = 0; | |
1227 | psymtab_include_list = (char **) alloca (includes_allocated * | |
1228 | sizeof (char *)); | |
1229 | ||
1230 | dependencies_allocated = 30; | |
1231 | dependencies_used = 0; | |
1232 | dependency_list = | |
1233 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1234 | sizeof (struct partial_symtab *)); | |
1235 | ||
1236 | /* Init bincl list */ | |
1237 | init_bincl_list (20, objfile); | |
74b7792f | 1238 | back_to = make_cleanup_free_bincl_list (objfile); |
c906108c SS |
1239 | |
1240 | last_source_file = NULL; | |
1241 | ||
96baa820 | 1242 | lowest_text_address = (CORE_ADDR) -1; |
c906108c SS |
1243 | |
1244 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ | |
1245 | abfd = objfile->obfd; | |
1246 | symbuf_end = symbuf_idx = 0; | |
1247 | next_symbol_text_func = dbx_next_symbol_text; | |
1248 | textlow_not_set = 1; | |
1249 | has_line_numbers = 0; | |
1250 | ||
4f49b26b JB |
1251 | /* FIXME: jimb/2003-09-12: We don't apply the right section's offset |
1252 | to global and static variables. The stab for a global or static | |
1253 | variable doesn't give us any indication of which section it's in, | |
1254 | so we can't tell immediately which offset in | |
1255 | objfile->section_offsets we should apply to the variable's | |
1256 | address. | |
1257 | ||
1258 | We could certainly find out which section contains the variable | |
1259 | by looking up the variable's unrelocated address with | |
1260 | find_pc_section, but that would be expensive; this is the | |
1261 | function that constructs the partial symbol tables by examining | |
1262 | every symbol in the entire executable, and it's | |
1263 | performance-critical. So that expense would not be welcome. I'm | |
1264 | not sure what to do about this at the moment. | |
1265 | ||
1266 | What we have done for years is to simply assume that the .data | |
1267 | section's offset is appropriate for all global and static | |
1268 | variables. Recently, this was expanded to fall back to the .bss | |
1269 | section's offset if there is no .data section, and then to the | |
1270 | .rodata section's offset. */ | |
7c8a5605 JB |
1271 | data_sect_index = objfile->sect_index_data; |
1272 | if (data_sect_index == -1) | |
1273 | data_sect_index = SECT_OFF_BSS (objfile); | |
2a13f9bc JB |
1274 | if (data_sect_index == -1) |
1275 | data_sect_index = SECT_OFF_RODATA (objfile); | |
d646061f JB |
1276 | |
1277 | /* If data_sect_index is still -1, that's okay. It's perfectly fine | |
1278 | for the file to have no .data, no .bss, and no .text at all, if | |
1279 | it also has no global or static variables. If it does, we will | |
1280 | get an internal error from an ANOFFSET macro below when we try to | |
1281 | use data_sect_index. */ | |
7c8a5605 | 1282 | |
c906108c SS |
1283 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
1284 | { | |
1285 | /* Get the symbol for this run and pull out some info */ | |
c5aa993b | 1286 | QUIT; /* allow this to be interruptable */ |
c906108c SS |
1287 | if (symbuf_idx == symbuf_end) |
1288 | fill_symbuf (abfd); | |
1289 | bufp = &symbuf[symbuf_idx++]; | |
1290 | ||
1291 | /* | |
1292 | * Special case to speed up readin. | |
1293 | */ | |
1294 | if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE) | |
1295 | { | |
1296 | has_line_numbers = 1; | |
1297 | continue; | |
1298 | } | |
1299 | ||
1300 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
1301 | OBJSTAT (objfile, n_stabs++); | |
1302 | ||
1303 | /* Ok. There is a lot of code duplicated in the rest of this | |
1304 | switch statement (for efficiency reasons). Since I don't | |
1305 | like duplicating code, I will do my penance here, and | |
1306 | describe the code which is duplicated: | |
1307 | ||
c5aa993b JM |
1308 | *) The assignment to namestring. |
1309 | *) The call to strchr. | |
1310 | *) The addition of a partial symbol the the two partial | |
1311 | symbol lists. This last is a large section of code, so | |
1312 | I've imbedded it in the following macro. | |
6a34fd2f | 1313 | */ |
c5aa993b | 1314 | |
6a34fd2f EZ |
1315 | switch (nlist.n_type) |
1316 | { | |
6a34fd2f EZ |
1317 | /* |
1318 | * Standard, external, non-debugger, symbols | |
1319 | */ | |
1320 | ||
9ce5d3bb DE |
1321 | case N_TEXT | N_EXT: |
1322 | case N_NBTEXT | N_EXT: | |
063e58ba MD |
1323 | nlist.n_value += ANOFFSET (objfile->section_offsets, |
1324 | SECT_OFF_TEXT (objfile)); | |
6a34fd2f EZ |
1325 | goto record_it; |
1326 | ||
9ce5d3bb DE |
1327 | case N_DATA | N_EXT: |
1328 | case N_NBDATA | N_EXT: | |
063e58ba MD |
1329 | nlist.n_value += ANOFFSET (objfile->section_offsets, |
1330 | SECT_OFF_DATA (objfile)); | |
6a34fd2f EZ |
1331 | goto record_it; |
1332 | ||
9ce5d3bb DE |
1333 | case N_BSS: |
1334 | case N_BSS | N_EXT: | |
1335 | case N_NBBSS | N_EXT: | |
1336 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
063e58ba MD |
1337 | nlist.n_value += ANOFFSET (objfile->section_offsets, |
1338 | SECT_OFF_BSS (objfile)); | |
6a34fd2f EZ |
1339 | goto record_it; |
1340 | ||
9ce5d3bb | 1341 | case N_ABS | N_EXT: |
6a34fd2f | 1342 | record_it: |
83b94be5 | 1343 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1344 | |
9ce5d3bb | 1345 | bss_ext_symbol: |
6a34fd2f EZ |
1346 | record_minimal_symbol (namestring, nlist.n_value, |
1347 | nlist.n_type, objfile); /* Always */ | |
1348 | continue; | |
1349 | ||
1350 | /* Standard, local, non-debugger, symbols */ | |
1351 | ||
9ce5d3bb | 1352 | case N_NBTEXT: |
6a34fd2f EZ |
1353 | |
1354 | /* We need to be able to deal with both N_FN or N_TEXT, | |
1355 | because we have no way of knowing whether the sys-supplied ld | |
1356 | or GNU ld was used to make the executable. Sequents throw | |
1357 | in another wrinkle -- they renumbered N_FN. */ | |
1358 | ||
9ce5d3bb DE |
1359 | case N_FN: |
1360 | case N_FN_SEQ: | |
1361 | case N_TEXT: | |
063e58ba MD |
1362 | nlist.n_value += ANOFFSET (objfile->section_offsets, |
1363 | SECT_OFF_TEXT (objfile)); | |
83b94be5 | 1364 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1365 | |
1366 | if ((namestring[0] == '-' && namestring[1] == 'l') | |
1367 | || (namestring[(nsl = strlen (namestring)) - 1] == 'o' | |
1368 | && namestring[nsl - 2] == '.')) | |
9ce5d3bb DE |
1369 | { |
1370 | if (past_first_source_file && pst | |
1371 | /* The gould NP1 uses low values for .o and -l symbols | |
1372 | which are not the address. */ | |
1373 | && nlist.n_value >= pst->textlow) | |
1374 | { | |
1375 | end_psymtab (pst, psymtab_include_list, includes_used, | |
1376 | symnum * symbol_size, | |
1377 | nlist.n_value > pst->texthigh | |
1378 | ? nlist.n_value : pst->texthigh, | |
1379 | dependency_list, dependencies_used, | |
1380 | textlow_not_set); | |
1381 | pst = (struct partial_symtab *) 0; | |
1382 | includes_used = 0; | |
1383 | dependencies_used = 0; | |
578933ab | 1384 | has_line_numbers = 0; |
9ce5d3bb DE |
1385 | } |
1386 | else | |
1387 | past_first_source_file = 1; | |
1388 | last_o_file_start = nlist.n_value; | |
1389 | } | |
6a34fd2f | 1390 | else |
9ce5d3bb | 1391 | goto record_it; |
6a34fd2f EZ |
1392 | continue; |
1393 | ||
9ce5d3bb | 1394 | case N_DATA: |
063e58ba MD |
1395 | nlist.n_value += ANOFFSET (objfile->section_offsets, |
1396 | SECT_OFF_DATA (objfile)); | |
6a34fd2f EZ |
1397 | goto record_it; |
1398 | ||
9ce5d3bb | 1399 | case N_UNDF | N_EXT: |
6a34fd2f | 1400 | if (nlist.n_value != 0) |
9ce5d3bb DE |
1401 | { |
1402 | /* This is a "Fortran COMMON" symbol. See if the target | |
1403 | environment knows where it has been relocated to. */ | |
1404 | ||
1405 | CORE_ADDR reladdr; | |
1406 | ||
83b94be5 | 1407 | namestring = set_namestring (objfile, &nlist); |
9ce5d3bb DE |
1408 | if (target_lookup_symbol (namestring, &reladdr)) |
1409 | { | |
1410 | continue; /* Error in lookup; ignore symbol for now. */ | |
1411 | } | |
1412 | nlist.n_type ^= (N_BSS ^ N_UNDF); /* Define it as a bss-symbol */ | |
1413 | nlist.n_value = reladdr; | |
1414 | goto bss_ext_symbol; | |
1415 | } | |
6a34fd2f EZ |
1416 | continue; /* Just undefined, not COMMON */ |
1417 | ||
9ce5d3bb | 1418 | case N_UNDF: |
6a34fd2f | 1419 | if (processing_acc_compilation && nlist.n_strx == 1) |
9ce5d3bb DE |
1420 | { |
1421 | /* Deal with relative offsets in the string table | |
1422 | used in ELF+STAB under Solaris. If we want to use the | |
1423 | n_strx field, which contains the name of the file, | |
1424 | we must adjust file_string_table_offset *before* calling | |
1425 | set_namestring(). */ | |
1426 | past_first_source_file = 1; | |
1427 | file_string_table_offset = next_file_string_table_offset; | |
1428 | next_file_string_table_offset = | |
1429 | file_string_table_offset + nlist.n_value; | |
1430 | if (next_file_string_table_offset < file_string_table_offset) | |
1431 | error (_("string table offset backs up at %d"), symnum); | |
1432 | /* FIXME -- replace error() with complaint. */ | |
1433 | continue; | |
1434 | } | |
6a34fd2f EZ |
1435 | continue; |
1436 | ||
1437 | /* Lots of symbol types we can just ignore. */ | |
1438 | ||
9ce5d3bb DE |
1439 | case N_ABS: |
1440 | case N_NBDATA: | |
1441 | case N_NBBSS: | |
6a34fd2f EZ |
1442 | continue; |
1443 | ||
1444 | /* Keep going . . . */ | |
1445 | ||
1446 | /* | |
1447 | * Special symbol types for GNU | |
1448 | */ | |
9ce5d3bb DE |
1449 | case N_INDR: |
1450 | case N_INDR | N_EXT: | |
1451 | case N_SETA: | |
1452 | case N_SETA | N_EXT: | |
1453 | case N_SETT: | |
1454 | case N_SETT | N_EXT: | |
1455 | case N_SETD: | |
1456 | case N_SETD | N_EXT: | |
1457 | case N_SETB: | |
1458 | case N_SETB | N_EXT: | |
1459 | case N_SETV: | |
6a34fd2f EZ |
1460 | continue; |
1461 | ||
1462 | /* | |
1463 | * Debugger symbols | |
1464 | */ | |
1465 | ||
9ce5d3bb | 1466 | case N_SO: |
6a34fd2f EZ |
1467 | { |
1468 | CORE_ADDR valu; | |
1469 | static int prev_so_symnum = -10; | |
1470 | static int first_so_symnum; | |
1471 | char *p; | |
57c22c6c | 1472 | static char *dirname_nso; |
6a34fd2f EZ |
1473 | int prev_textlow_not_set; |
1474 | ||
063e58ba MD |
1475 | valu = nlist.n_value + ANOFFSET (objfile->section_offsets, |
1476 | SECT_OFF_TEXT (objfile)); | |
6a34fd2f EZ |
1477 | |
1478 | prev_textlow_not_set = textlow_not_set; | |
1479 | ||
6a34fd2f EZ |
1480 | /* A zero value is probably an indication for the SunPRO 3.0 |
1481 | compiler. end_psymtab explicitly tests for zero, so | |
1482 | don't relocate it. */ | |
1483 | ||
203c3895 | 1484 | if (nlist.n_value == 0 |
5e2b427d | 1485 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
6a34fd2f EZ |
1486 | { |
1487 | textlow_not_set = 1; | |
1488 | valu = 0; | |
1489 | } | |
1490 | else | |
1491 | textlow_not_set = 0; | |
203c3895 | 1492 | |
6a34fd2f EZ |
1493 | past_first_source_file = 1; |
1494 | ||
1495 | if (prev_so_symnum != symnum - 1) | |
1496 | { /* Here if prev stab wasn't N_SO */ | |
1497 | first_so_symnum = symnum; | |
1498 | ||
1499 | if (pst) | |
1500 | { | |
1501 | end_psymtab (pst, psymtab_include_list, includes_used, | |
1502 | symnum * symbol_size, | |
5afc051b | 1503 | valu > pst->texthigh ? valu : pst->texthigh, |
6a34fd2f EZ |
1504 | dependency_list, dependencies_used, |
1505 | prev_textlow_not_set); | |
1506 | pst = (struct partial_symtab *) 0; | |
1507 | includes_used = 0; | |
1508 | dependencies_used = 0; | |
578933ab | 1509 | has_line_numbers = 0; |
6a34fd2f EZ |
1510 | } |
1511 | } | |
1512 | ||
1513 | prev_so_symnum = symnum; | |
1514 | ||
1515 | /* End the current partial symtab and start a new one */ | |
1516 | ||
83b94be5 | 1517 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1518 | |
1519 | /* Null name means end of .o file. Don't start a new one. */ | |
1520 | if (*namestring == '\000') | |
1521 | continue; | |
1522 | ||
1523 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
1524 | The first one is a directory name; the second the file name. | |
1525 | If pst exists, is empty, and has a filename ending in '/', | |
1526 | we assume the previous N_SO was a directory name. */ | |
1527 | ||
1528 | p = strrchr (namestring, '/'); | |
1529 | if (p && *(p + 1) == '\000') | |
57c22c6c BR |
1530 | { |
1531 | /* Save the directory name SOs locally, then save it into | |
1532 | the psymtab when it's created below. */ | |
1533 | dirname_nso = namestring; | |
1534 | continue; | |
1535 | } | |
6a34fd2f EZ |
1536 | |
1537 | /* Some other compilers (C++ ones in particular) emit useless | |
131fe1bb DE |
1538 | SOs for non-existant .c files. We ignore all subsequent SOs |
1539 | that immediately follow the first. */ | |
6a34fd2f EZ |
1540 | |
1541 | if (!pst) | |
57c22c6c | 1542 | { |
9ce5d3bb DE |
1543 | pst = start_psymtab (objfile, |
1544 | namestring, valu, | |
1545 | first_so_symnum * symbol_size, | |
1546 | objfile->global_psymbols.next, | |
1547 | objfile->static_psymbols.next); | |
57c22c6c BR |
1548 | pst->dirname = dirname_nso; |
1549 | dirname_nso = NULL; | |
1550 | } | |
6a34fd2f EZ |
1551 | continue; |
1552 | } | |
1553 | ||
9ce5d3bb | 1554 | case N_BINCL: |
6a34fd2f EZ |
1555 | { |
1556 | enum language tmp_language; | |
1557 | /* Add this bincl to the bincl_list for future EXCLs. No | |
1558 | need to save the string; it'll be around until | |
1559 | read_dbx_symtab function returns */ | |
1560 | ||
83b94be5 | 1561 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1562 | tmp_language = deduce_language_from_filename (namestring); |
1563 | ||
1564 | /* Only change the psymtab's language if we've learned | |
1565 | something useful (eg. tmp_language is not language_unknown). | |
1566 | In addition, to match what start_subfile does, never change | |
1567 | from C++ to C. */ | |
1568 | if (tmp_language != language_unknown | |
1569 | && (tmp_language != language_c | |
1570 | || psymtab_language != language_cplus)) | |
d7f98cce | 1571 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1572 | |
1573 | if (pst == NULL) | |
9ce5d3bb DE |
1574 | { |
1575 | /* FIXME: we should not get here without a PST to work on. | |
1576 | Attempt to recover. */ | |
1577 | complaint (&symfile_complaints, | |
1578 | _("N_BINCL %s not in entries for any file, at symtab \ | |
063e58ba | 1579 | pos %d"), |
9ce5d3bb DE |
1580 | namestring, symnum); |
1581 | continue; | |
1582 | } | |
6a34fd2f EZ |
1583 | add_bincl_to_list (pst, namestring, nlist.n_value); |
1584 | ||
1585 | /* Mark down an include file in the current psymtab */ | |
1586 | ||
1587 | goto record_include_file; | |
1588 | } | |
1589 | ||
9ce5d3bb | 1590 | case N_SOL: |
6a34fd2f EZ |
1591 | { |
1592 | enum language tmp_language; | |
1593 | /* Mark down an include file in the current psymtab */ | |
1594 | ||
83b94be5 | 1595 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1596 | tmp_language = deduce_language_from_filename (namestring); |
1597 | ||
1598 | /* Only change the psymtab's language if we've learned | |
1599 | something useful (eg. tmp_language is not language_unknown). | |
1600 | In addition, to match what start_subfile does, never change | |
1601 | from C++ to C. */ | |
1602 | if (tmp_language != language_unknown | |
1603 | && (tmp_language != language_c | |
1604 | || psymtab_language != language_cplus)) | |
d7f98cce | 1605 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1606 | |
1607 | /* In C++, one may expect the same filename to come round many | |
1608 | times, when code is coming alternately from the main file | |
1609 | and from inline functions in other files. So I check to see | |
1610 | if this is a file we've seen before -- either the main | |
1611 | source file, or a previously included file. | |
1612 | ||
1613 | This seems to be a lot of time to be spending on N_SOL, but | |
1614 | things like "break c-exp.y:435" need to work (I | |
1615 | suppose the psymtab_include_list could be hashed or put | |
1616 | in a binary tree, if profiling shows this is a major hog). */ | |
6314a349 | 1617 | if (pst && strcmp (namestring, pst->filename) == 0) |
9ce5d3bb | 1618 | continue; |
6a34fd2f | 1619 | { |
aa1ee363 | 1620 | int i; |
6a34fd2f | 1621 | for (i = 0; i < includes_used; i++) |
6314a349 | 1622 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
6a34fd2f EZ |
1623 | { |
1624 | i = -1; | |
1625 | break; | |
1626 | } | |
1627 | if (i == -1) | |
1628 | continue; | |
1629 | } | |
1630 | ||
9ce5d3bb | 1631 | record_include_file: |
6a34fd2f EZ |
1632 | |
1633 | psymtab_include_list[includes_used++] = namestring; | |
1634 | if (includes_used >= includes_allocated) | |
9ce5d3bb DE |
1635 | { |
1636 | char **orig = psymtab_include_list; | |
6a34fd2f | 1637 | |
9ce5d3bb | 1638 | psymtab_include_list = (char **) |
83b94be5 | 1639 | alloca ((includes_allocated *= 2) * sizeof (char *)); |
9ce5d3bb DE |
1640 | memcpy (psymtab_include_list, orig, |
1641 | includes_used * sizeof (char *)); | |
1642 | } | |
6a34fd2f EZ |
1643 | continue; |
1644 | } | |
9ce5d3bb DE |
1645 | case N_LSYM: /* Typedef or automatic variable. */ |
1646 | case N_STSYM: /* Data seg var -- static */ | |
1647 | case N_LCSYM: /* BSS " */ | |
1648 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
1649 | case N_NBSTS: /* Gould nobase. */ | |
1650 | case N_NBLCS: /* symbols. */ | |
1651 | case N_FUN: | |
1652 | case N_GSYM: /* Global (extern) variable; can be | |
063e58ba | 1653 | data or bss (sigh FIXME). */ |
6a34fd2f EZ |
1654 | |
1655 | /* Following may probably be ignored; I'll leave them here | |
1656 | for now (until I do Pascal and Modula 2 extensions). */ | |
1657 | ||
9ce5d3bb | 1658 | case N_PC: /* I may or may not need this; I |
063e58ba | 1659 | suspect not. */ |
9ce5d3bb DE |
1660 | case N_M2C: /* I suspect that I can ignore this here. */ |
1661 | case N_SCOPE: /* Same. */ | |
131fe1bb DE |
1662 | { |
1663 | char *p; | |
6a34fd2f | 1664 | |
83b94be5 | 1665 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1666 | |
1667 | /* See if this is an end of function stab. */ | |
1668 | if (pst && nlist.n_type == N_FUN && *namestring == '\000') | |
9ce5d3bb DE |
1669 | { |
1670 | CORE_ADDR valu; | |
1671 | ||
1672 | /* It's value is the size (in bytes) of the function for | |
1673 | function relative stabs, or the address of the function's | |
1674 | end for old style stabs. */ | |
1675 | valu = nlist.n_value + last_function_start; | |
1676 | if (pst->texthigh == 0 || valu > pst->texthigh) | |
1677 | pst->texthigh = valu; | |
1678 | break; | |
1679 | } | |
6a34fd2f EZ |
1680 | |
1681 | p = (char *) strchr (namestring, ':'); | |
1682 | if (!p) | |
9ce5d3bb | 1683 | continue; /* Not a debugging symbol. */ |
6a34fd2f | 1684 | |
71c25dea | 1685 | sym_len = 0; |
87bc73ea | 1686 | sym_name = NULL; /* pacify "gcc -Werror" */ |
71c25dea TT |
1687 | if (psymtab_language == language_cplus) |
1688 | { | |
60f25dfd | 1689 | char *new_name, *name = xmalloc (p - namestring + 1); |
71c25dea TT |
1690 | memcpy (name, namestring, p - namestring); |
1691 | name[p - namestring] = '\0'; | |
1692 | new_name = cp_canonicalize_string (name); | |
1693 | if (new_name != NULL) | |
1694 | { | |
1695 | sym_len = strlen (new_name); | |
1696 | sym_name = obsavestring (new_name, sym_len, | |
1697 | &objfile->objfile_obstack); | |
1698 | xfree (new_name); | |
1699 | } | |
60f25dfd | 1700 | xfree (name); |
71c25dea TT |
1701 | } |
1702 | ||
1703 | if (sym_len == 0) | |
1704 | { | |
1705 | sym_name = namestring; | |
1706 | sym_len = p - namestring; | |
1707 | } | |
1708 | ||
6a34fd2f EZ |
1709 | /* Main processing section for debugging symbols which |
1710 | the initial read through the symbol tables needs to worry | |
1711 | about. If we reach this point, the symbol which we are | |
1712 | considering is definitely one we are interested in. | |
1713 | p must also contain the (valid) index into the namestring | |
1714 | which indicates the debugging type symbol. */ | |
1715 | ||
1716 | switch (p[1]) | |
9ce5d3bb DE |
1717 | { |
1718 | case 'S': | |
1719 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1720 | data_sect_index); | |
1721 | ||
5e2b427d UW |
1722 | if (gdbarch_static_transform_name_p (gdbarch)) |
1723 | namestring = gdbarch_static_transform_name (gdbarch, | |
1724 | namestring); | |
9ce5d3bb | 1725 | |
04a679b8 | 1726 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1727 | VAR_DOMAIN, LOC_STATIC, |
1728 | &objfile->static_psymbols, | |
1729 | 0, nlist.n_value, | |
1730 | psymtab_language, objfile); | |
1731 | continue; | |
131fe1bb | 1732 | |
9ce5d3bb DE |
1733 | case 'G': |
1734 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1735 | data_sect_index); | |
1736 | /* The addresses in these entries are reported to be | |
1737 | wrong. See the code that reads 'G's for symtabs. */ | |
04a679b8 | 1738 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1739 | VAR_DOMAIN, LOC_STATIC, |
1740 | &objfile->global_psymbols, | |
1741 | 0, nlist.n_value, | |
1742 | psymtab_language, objfile); | |
1743 | continue; | |
6a34fd2f | 1744 | |
9ce5d3bb DE |
1745 | case 'T': |
1746 | /* When a 'T' entry is defining an anonymous enum, it | |
1747 | may have a name which is the empty string, or a | |
1748 | single space. Since they're not really defining a | |
1749 | symbol, those shouldn't go in the partial symbol | |
1750 | table. We do pick up the elements of such enums at | |
1751 | 'check_enum:', below. */ | |
1752 | if (p >= namestring + 2 | |
1753 | || (p == namestring + 1 | |
1754 | && namestring[0] != ' ')) | |
1755 | { | |
04a679b8 | 1756 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1757 | STRUCT_DOMAIN, LOC_TYPEDEF, |
1758 | &objfile->static_psymbols, | |
1759 | nlist.n_value, 0, | |
1760 | psymtab_language, objfile); | |
1761 | if (p[2] == 't') | |
1762 | { | |
1763 | /* Also a typedef with the same name. */ | |
04a679b8 | 1764 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1765 | VAR_DOMAIN, LOC_TYPEDEF, |
1766 | &objfile->static_psymbols, | |
1767 | nlist.n_value, 0, | |
1768 | psymtab_language, objfile); | |
1769 | p += 1; | |
1770 | } | |
1771 | } | |
1772 | goto check_enum; | |
131fe1bb | 1773 | |
9ce5d3bb DE |
1774 | case 't': |
1775 | if (p != namestring) /* a name is there, not just :T... */ | |
1776 | { | |
04a679b8 | 1777 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1778 | VAR_DOMAIN, LOC_TYPEDEF, |
1779 | &objfile->static_psymbols, | |
1780 | nlist.n_value, 0, | |
1781 | psymtab_language, objfile); | |
1782 | } | |
1783 | check_enum: | |
1784 | /* If this is an enumerated type, we need to | |
1785 | add all the enum constants to the partial symbol | |
1786 | table. This does not cover enums without names, e.g. | |
1787 | "enum {a, b} c;" in C, but fortunately those are | |
1788 | rare. There is no way for GDB to find those from the | |
1789 | enum type without spending too much time on it. Thus | |
1790 | to solve this problem, the compiler needs to put out the | |
1791 | enum in a nameless type. GCC2 does this. */ | |
1792 | ||
1793 | /* We are looking for something of the form | |
1794 | <name> ":" ("t" | "T") [<number> "="] "e" | |
1795 | {<constant> ":" <value> ","} ";". */ | |
1796 | ||
1797 | /* Skip over the colon and the 't' or 'T'. */ | |
1798 | p += 2; | |
1799 | /* This type may be given a number. Also, numbers can come | |
1800 | in pairs like (0,26). Skip over it. */ | |
1801 | while ((*p >= '0' && *p <= '9') | |
1802 | || *p == '(' || *p == ',' || *p == ')' | |
1803 | || *p == '=') | |
1804 | p++; | |
1805 | ||
1806 | if (*p++ == 'e') | |
1807 | { | |
1808 | /* The aix4 compiler emits extra crud before the members. */ | |
1809 | if (*p == '-') | |
1810 | { | |
1811 | /* Skip over the type (?). */ | |
1812 | while (*p != ':') | |
1813 | p++; | |
6a34fd2f | 1814 | |
9ce5d3bb | 1815 | /* Skip over the colon. */ |
6a34fd2f | 1816 | p++; |
9ce5d3bb | 1817 | } |
6a34fd2f | 1818 | |
9ce5d3bb DE |
1819 | /* We have found an enumerated type. */ |
1820 | /* According to comments in read_enum_type | |
1821 | a comma could end it instead of a semicolon. | |
1822 | I don't know where that happens. | |
1823 | Accept either. */ | |
1824 | while (*p && *p != ';' && *p != ',') | |
1825 | { | |
1826 | char *q; | |
1827 | ||
1828 | /* Check for and handle cretinous dbx symbol name | |
1829 | continuation! */ | |
1830 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
1831 | p = next_symbol_text (objfile); | |
1832 | ||
1833 | /* Point to the character after the name | |
1834 | of the enum constant. */ | |
1835 | for (q = p; *q && *q != ':'; q++) | |
1836 | ; | |
1837 | /* Note that the value doesn't matter for | |
1838 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 1839 | add_psymbol_to_list (p, q - p, 1, |
9ce5d3bb DE |
1840 | VAR_DOMAIN, LOC_CONST, |
1841 | &objfile->static_psymbols, 0, | |
1842 | 0, psymtab_language, objfile); | |
1843 | /* Point past the name. */ | |
1844 | p = q; | |
1845 | /* Skip over the value. */ | |
1846 | while (*p && *p != ',') | |
1847 | p++; | |
1848 | /* Advance past the comma. */ | |
1849 | if (*p) | |
1850 | p++; | |
1851 | } | |
1852 | } | |
1853 | continue; | |
131fe1bb | 1854 | |
9ce5d3bb DE |
1855 | case 'c': |
1856 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 1857 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1858 | VAR_DOMAIN, LOC_CONST, |
1859 | &objfile->static_psymbols, nlist.n_value, | |
1860 | 0, psymtab_language, objfile); | |
1861 | continue; | |
6a34fd2f | 1862 | |
9ce5d3bb DE |
1863 | case 'f': |
1864 | if (! pst) | |
1865 | { | |
1866 | int name_len = p - namestring; | |
1867 | char *name = xmalloc (name_len + 1); | |
1868 | memcpy (name, namestring, name_len); | |
1869 | name[name_len] = '\0'; | |
1870 | function_outside_compilation_unit_complaint (name); | |
1871 | xfree (name); | |
1872 | } | |
1873 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1874 | SECT_OFF_TEXT (objfile)); | |
1875 | /* Kludges for ELF/STABS with Sun ACC */ | |
1876 | last_function_name = namestring; | |
1877 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
1878 | value for the bottom of the text seg in those cases. */ | |
1879 | if (nlist.n_value == ANOFFSET (objfile->section_offsets, | |
1880 | SECT_OFF_TEXT (objfile)) | |
5e2b427d | 1881 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1882 | { |
1883 | CORE_ADDR minsym_valu = | |
1884 | find_stab_function_addr (namestring, | |
1885 | pst ? pst->filename : NULL, | |
1886 | objfile); | |
1887 | /* find_stab_function_addr will return 0 if the minimal | |
1888 | symbol wasn't found. (Unfortunately, this might also | |
1889 | be a valid address.) Anyway, if it *does* return 0, | |
1890 | it is likely that the value was set correctly to begin | |
1891 | with... */ | |
1892 | if (minsym_valu != 0) | |
1893 | nlist.n_value = minsym_valu; | |
1894 | } | |
1895 | if (pst && textlow_not_set | |
5e2b427d | 1896 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1897 | { |
1898 | pst->textlow = nlist.n_value; | |
1899 | textlow_not_set = 0; | |
1900 | } | |
1901 | /* End kludge. */ | |
1902 | ||
1903 | /* Keep track of the start of the last function so we | |
1904 | can handle end of function symbols. */ | |
1905 | last_function_start = nlist.n_value; | |
1906 | ||
1907 | /* In reordered executables this function may lie outside | |
1908 | the bounds created by N_SO symbols. If that's the case | |
1909 | use the address of this function as the low bound for | |
1910 | the partial symbol table. */ | |
1911 | if (pst | |
1912 | && (textlow_not_set | |
1913 | || (nlist.n_value < pst->textlow | |
1914 | && (nlist.n_value | |
1915 | != ANOFFSET (objfile->section_offsets, | |
1916 | SECT_OFF_TEXT (objfile)))))) | |
1917 | { | |
1918 | pst->textlow = nlist.n_value; | |
1919 | textlow_not_set = 0; | |
1920 | } | |
04a679b8 | 1921 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1922 | VAR_DOMAIN, LOC_BLOCK, |
1923 | &objfile->static_psymbols, | |
1924 | 0, nlist.n_value, | |
1925 | psymtab_language, objfile); | |
1926 | continue; | |
6a34fd2f | 1927 | |
9ce5d3bb DE |
1928 | /* Global functions were ignored here, but now they |
1929 | are put into the global psymtab like one would expect. | |
1930 | They're also in the minimal symbol table. */ | |
1931 | case 'F': | |
1932 | if (! pst) | |
1933 | { | |
1934 | int name_len = p - namestring; | |
1935 | char *name = xmalloc (name_len + 1); | |
1936 | memcpy (name, namestring, name_len); | |
1937 | name[name_len] = '\0'; | |
1938 | function_outside_compilation_unit_complaint (name); | |
1939 | xfree (name); | |
1940 | } | |
1941 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1942 | SECT_OFF_TEXT (objfile)); | |
1943 | /* Kludges for ELF/STABS with Sun ACC */ | |
1944 | last_function_name = namestring; | |
1945 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
1946 | value for the bottom of the text seg in those cases. */ | |
1947 | if (nlist.n_value == ANOFFSET (objfile->section_offsets, | |
1948 | SECT_OFF_TEXT (objfile)) | |
5e2b427d | 1949 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1950 | { |
1951 | CORE_ADDR minsym_valu = | |
1952 | find_stab_function_addr (namestring, | |
1953 | pst ? pst->filename : NULL, | |
1954 | objfile); | |
1955 | /* find_stab_function_addr will return 0 if the minimal | |
1956 | symbol wasn't found. (Unfortunately, this might also | |
1957 | be a valid address.) Anyway, if it *does* return 0, | |
1958 | it is likely that the value was set correctly to begin | |
1959 | with... */ | |
1960 | if (minsym_valu != 0) | |
1961 | nlist.n_value = minsym_valu; | |
1962 | } | |
1963 | if (pst && textlow_not_set | |
5e2b427d | 1964 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1965 | { |
1966 | pst->textlow = nlist.n_value; | |
1967 | textlow_not_set = 0; | |
1968 | } | |
1969 | /* End kludge. */ | |
1970 | ||
1971 | /* Keep track of the start of the last function so we | |
1972 | can handle end of function symbols. */ | |
1973 | last_function_start = nlist.n_value; | |
1974 | ||
1975 | /* In reordered executables this function may lie outside | |
1976 | the bounds created by N_SO symbols. If that's the case | |
1977 | use the address of this function as the low bound for | |
1978 | the partial symbol table. */ | |
1979 | if (pst | |
1980 | && (textlow_not_set | |
1981 | || (nlist.n_value < pst->textlow | |
1982 | && (nlist.n_value | |
1983 | != ANOFFSET (objfile->section_offsets, | |
1984 | SECT_OFF_TEXT (objfile)))))) | |
1985 | { | |
1986 | pst->textlow = nlist.n_value; | |
1987 | textlow_not_set = 0; | |
1988 | } | |
04a679b8 | 1989 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1990 | VAR_DOMAIN, LOC_BLOCK, |
1991 | &objfile->global_psymbols, | |
1992 | 0, nlist.n_value, | |
1993 | psymtab_language, objfile); | |
1994 | continue; | |
6a34fd2f | 1995 | |
9ce5d3bb DE |
1996 | /* Two things show up here (hopefully); static symbols of |
1997 | local scope (static used inside braces) or extensions | |
1998 | of structure symbols. We can ignore both. */ | |
1999 | case 'V': | |
2000 | case '(': | |
2001 | case '0': | |
2002 | case '1': | |
2003 | case '2': | |
2004 | case '3': | |
2005 | case '4': | |
2006 | case '5': | |
2007 | case '6': | |
2008 | case '7': | |
2009 | case '8': | |
2010 | case '9': | |
2011 | case '-': | |
2012 | case '#': /* for symbol identification (used in live ranges) */ | |
2013 | continue; | |
6a34fd2f | 2014 | |
9ce5d3bb DE |
2015 | case ':': |
2016 | /* It is a C++ nested symbol. We don't need to record it | |
2017 | (I don't think); if we try to look up foo::bar::baz, | |
2018 | then symbols for the symtab containing foo should get | |
2019 | read in, I think. */ | |
2020 | /* Someone says sun cc puts out symbols like | |
2021 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2022 | which would get here with a symbol type of ':'. */ | |
2023 | continue; | |
6a34fd2f | 2024 | |
9ce5d3bb DE |
2025 | default: |
2026 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
2027 | of a continued stab can show up here. The question is | |
2028 | whether they ever can mimic a normal stab--it would be | |
2029 | nice if not, since we certainly don't want to spend the | |
2030 | time searching to the end of every string looking for | |
2031 | a backslash. */ | |
6a34fd2f | 2032 | |
9ce5d3bb DE |
2033 | complaint (&symfile_complaints, _("unknown symbol descriptor `%c'"), |
2034 | p[1]); | |
2035 | ||
2036 | /* Ignore it; perhaps it is an extension that we don't | |
2037 | know about. */ | |
2038 | continue; | |
2039 | } | |
131fe1bb | 2040 | } |
6a34fd2f | 2041 | |
9ce5d3bb | 2042 | case N_EXCL: |
6a34fd2f | 2043 | |
83b94be5 | 2044 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
2045 | |
2046 | /* Find the corresponding bincl and mark that psymtab on the | |
2047 | psymtab dependency list */ | |
2048 | { | |
2049 | struct partial_symtab *needed_pst = | |
2050 | find_corresponding_bincl_psymtab (namestring, nlist.n_value); | |
2051 | ||
2052 | /* If this include file was defined earlier in this file, | |
2053 | leave it alone. */ | |
2054 | if (needed_pst == pst) | |
2055 | continue; | |
2056 | ||
2057 | if (needed_pst) | |
2058 | { | |
2059 | int i; | |
2060 | int found = 0; | |
2061 | ||
2062 | for (i = 0; i < dependencies_used; i++) | |
2063 | if (dependency_list[i] == needed_pst) | |
2064 | { | |
2065 | found = 1; | |
2066 | break; | |
2067 | } | |
2068 | ||
2069 | /* If it's already in the list, skip the rest. */ | |
2070 | if (found) | |
2071 | continue; | |
2072 | ||
2073 | dependency_list[dependencies_used++] = needed_pst; | |
2074 | if (dependencies_used >= dependencies_allocated) | |
2075 | { | |
2076 | struct partial_symtab **orig = dependency_list; | |
2077 | dependency_list = | |
2078 | (struct partial_symtab **) | |
2079 | alloca ((dependencies_allocated *= 2) | |
2080 | * sizeof (struct partial_symtab *)); | |
4efb68b1 | 2081 | memcpy (dependency_list, orig, |
6a34fd2f EZ |
2082 | (dependencies_used |
2083 | * sizeof (struct partial_symtab *))); | |
2084 | #ifdef DEBUG_INFO | |
063e58ba MD |
2085 | fprintf_unfiltered (gdb_stderr, |
2086 | "Had to reallocate dependency list.\n"); | |
2087 | fprintf_unfiltered (gdb_stderr, | |
2088 | "New dependencies allocated: %d\n", | |
6a34fd2f EZ |
2089 | dependencies_allocated); |
2090 | #endif | |
2091 | } | |
2092 | } | |
2093 | } | |
2094 | continue; | |
2095 | ||
9ce5d3bb | 2096 | case N_ENDM: |
6a34fd2f | 2097 | /* Solaris 2 end of module, finish current partial symbol table. |
5afc051b | 2098 | end_psymtab will set pst->texthigh to the proper value, which |
6a34fd2f EZ |
2099 | is necessary if a module compiled without debugging info |
2100 | follows this module. */ | |
5e2b427d | 2101 | if (pst && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
2102 | { |
2103 | end_psymtab (pst, psymtab_include_list, includes_used, | |
2104 | symnum * symbol_size, | |
2105 | (CORE_ADDR) 0, | |
2106 | dependency_list, dependencies_used, textlow_not_set); | |
2107 | pst = (struct partial_symtab *) 0; | |
2108 | includes_used = 0; | |
2109 | dependencies_used = 0; | |
578933ab | 2110 | has_line_numbers = 0; |
9ce5d3bb | 2111 | } |
6a34fd2f | 2112 | continue; |
c906108c | 2113 | |
9ce5d3bb | 2114 | case N_RBRAC: |
6a34fd2f EZ |
2115 | #ifdef HANDLE_RBRAC |
2116 | HANDLE_RBRAC (nlist.n_value); | |
2117 | continue; | |
2118 | #endif | |
9ce5d3bb DE |
2119 | case N_EINCL: |
2120 | case N_DSLINE: | |
2121 | case N_BSLINE: | |
2122 | case N_SSYM: /* Claim: Structure or union element. | |
063e58ba | 2123 | Hopefully, I can ignore this. */ |
9ce5d3bb DE |
2124 | case N_ENTRY: /* Alternate entry point; can ignore. */ |
2125 | case N_MAIN: /* Can definitely ignore this. */ | |
2126 | case N_CATCH: /* These are GNU C++ extensions */ | |
2127 | case N_EHDECL: /* that can safely be ignored here. */ | |
2128 | case N_LENG: | |
2129 | case N_BCOMM: | |
2130 | case N_ECOMM: | |
2131 | case N_ECOML: | |
2132 | case N_FNAME: | |
2133 | case N_SLINE: | |
2134 | case N_RSYM: | |
2135 | case N_PSYM: | |
2136 | case N_LBRAC: | |
2137 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
2138 | case N_DEFD: /* GNU Modula-2 */ | |
2139 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
2140 | ||
2141 | case N_OBJ: /* useless types from Solaris */ | |
2142 | case N_OPT: | |
2143 | case N_PATCH: | |
6a34fd2f EZ |
2144 | /* These symbols aren't interesting; don't worry about them */ |
2145 | ||
2146 | continue; | |
2147 | ||
9ce5d3bb | 2148 | default: |
6a34fd2f EZ |
2149 | /* If we haven't found it yet, ignore it. It's probably some |
2150 | new type we don't know about yet. */ | |
bb599908 | 2151 | unknown_symtype_complaint (hex_string (nlist.n_type)); |
6a34fd2f EZ |
2152 | continue; |
2153 | } | |
c906108c SS |
2154 | } |
2155 | ||
2156 | /* If there's stuff to be cleaned up, clean it up. */ | |
c906108c SS |
2157 | if (pst) |
2158 | { | |
2159 | /* Don't set pst->texthigh lower than it already is. */ | |
2160 | CORE_ADDR text_end = | |
6a34fd2f | 2161 | (lowest_text_address == (CORE_ADDR) -1 |
063e58ba MD |
2162 | ? (text_addr + ANOFFSET (objfile->section_offsets, |
2163 | SECT_OFF_TEXT (objfile))) | |
6a34fd2f EZ |
2164 | : lowest_text_address) |
2165 | + text_size; | |
c906108c SS |
2166 | |
2167 | end_psymtab (pst, psymtab_include_list, includes_used, | |
2168 | symnum * symbol_size, | |
5afc051b | 2169 | text_end > pst->texthigh ? text_end : pst->texthigh, |
c906108c SS |
2170 | dependency_list, dependencies_used, textlow_not_set); |
2171 | } | |
2172 | ||
2173 | do_cleanups (back_to); | |
2174 | } | |
2175 | ||
2176 | /* Allocate and partially fill a partial symtab. It will be | |
2177 | completely filled at the end of the symbol list. | |
2178 | ||
2179 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2180 | is the address relative to which its symbols are (incremental) or 0 | |
2181 | (normal). */ | |
2182 | ||
d4f3574e | 2183 | static struct partial_symtab * |
fba45db2 KB |
2184 | start_psymtab (struct objfile *objfile, char *filename, CORE_ADDR textlow, |
2185 | int ldsymoff, struct partial_symbol **global_syms, | |
2186 | struct partial_symbol **static_syms) | |
c906108c SS |
2187 | { |
2188 | struct partial_symtab *result = | |
d4f3574e | 2189 | start_psymtab_common (objfile, objfile->section_offsets, |
c5aa993b | 2190 | filename, textlow, global_syms, static_syms); |
c906108c | 2191 | |
e38df1d0 TT |
2192 | result->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2193 | sizeof (struct symloc)); | |
c5aa993b | 2194 | LDSYMOFF (result) = ldsymoff; |
c906108c | 2195 | result->read_symtab = dbx_psymtab_to_symtab; |
c5aa993b JM |
2196 | SYMBOL_SIZE (result) = symbol_size; |
2197 | SYMBOL_OFFSET (result) = symbol_table_offset; | |
2198 | STRING_OFFSET (result) = string_table_offset; | |
2199 | FILE_STRING_OFFSET (result) = file_string_table_offset; | |
c906108c | 2200 | |
31d99776 | 2201 | #ifdef HAVE_ELF |
c906108c SS |
2202 | /* If we're handling an ELF file, drag some section-relocation info |
2203 | for this source file out of the ELF symbol table, to compensate for | |
2204 | Sun brain death. This replaces the section_offsets in this psymtab, | |
2205 | if successful. */ | |
2206 | elfstab_offset_sections (objfile, result); | |
31d99776 | 2207 | #endif |
c906108c SS |
2208 | |
2209 | /* Deduce the source language from the filename for this psymtab. */ | |
2210 | psymtab_language = deduce_language_from_filename (filename); | |
2211 | ||
2212 | return result; | |
2213 | } | |
2214 | ||
2215 | /* Close off the current usage of PST. | |
2216 | Returns PST or NULL if the partial symtab was empty and thrown away. | |
2217 | ||
2218 | FIXME: List variables and peculiarities of same. */ | |
2219 | ||
2220 | struct partial_symtab * | |
fba45db2 KB |
2221 | end_psymtab (struct partial_symtab *pst, char **include_list, int num_includes, |
2222 | int capping_symbol_offset, CORE_ADDR capping_text, | |
2223 | struct partial_symtab **dependency_list, int number_dependencies, | |
2224 | int textlow_not_set) | |
c906108c SS |
2225 | { |
2226 | int i; | |
c5aa993b | 2227 | struct objfile *objfile = pst->objfile; |
5e2b427d | 2228 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
2229 | |
2230 | if (capping_symbol_offset != -1) | |
c5aa993b | 2231 | LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst); |
5afc051b | 2232 | pst->texthigh = capping_text; |
c906108c | 2233 | |
c906108c SS |
2234 | /* Under Solaris, the N_SO symbols always have a value of 0, |
2235 | instead of the usual address of the .o file. Therefore, | |
2236 | we have to do some tricks to fill in texthigh and textlow. | |
6a34fd2f | 2237 | The first trick is: if we see a static |
c906108c SS |
2238 | or global function, and the textlow for the current pst |
2239 | is not set (ie: textlow_not_set), then we use that function's | |
2240 | address for the textlow of the pst. */ | |
2241 | ||
2242 | /* Now, to fill in texthigh, we remember the last function seen | |
6a34fd2f | 2243 | in the .o file. Also, there's a hack in |
c906108c SS |
2244 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field |
2245 | to here via the misc_info field. Therefore, we can fill in | |
2246 | a reliable texthigh by taking the address plus size of the | |
2247 | last function in the file. */ | |
2248 | ||
203c3895 | 2249 | if (pst->texthigh == 0 && last_function_name |
5e2b427d | 2250 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
c906108c SS |
2251 | { |
2252 | char *p; | |
2253 | int n; | |
2254 | struct minimal_symbol *minsym; | |
2255 | ||
2256 | p = strchr (last_function_name, ':'); | |
2257 | if (p == NULL) | |
2258 | p = last_function_name; | |
2259 | n = p - last_function_name; | |
2260 | p = alloca (n + 2); | |
2261 | strncpy (p, last_function_name, n); | |
2262 | p[n] = 0; | |
c5aa993b | 2263 | |
c906108c SS |
2264 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
2265 | if (minsym == NULL) | |
2266 | { | |
2267 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
2268 | try again with an appended underscore if the minimal symbol | |
2269 | was not found. */ | |
2270 | p[n] = '_'; | |
2271 | p[n + 1] = 0; | |
2272 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); | |
2273 | } | |
2274 | ||
2275 | if (minsym) | |
5afc051b | 2276 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + MSYMBOL_SIZE (minsym); |
c906108c SS |
2277 | |
2278 | last_function_name = NULL; | |
2279 | } | |
2280 | ||
5e2b427d | 2281 | if (!gdbarch_sofun_address_maybe_missing (gdbarch)) |
203c3895 | 2282 | ; |
c906108c | 2283 | /* this test will be true if the last .o file is only data */ |
203c3895 | 2284 | else if (textlow_not_set) |
5afc051b | 2285 | pst->textlow = pst->texthigh; |
c906108c SS |
2286 | else |
2287 | { | |
2288 | struct partial_symtab *p1; | |
2289 | ||
2290 | /* If we know our own starting text address, then walk through all other | |
c5aa993b JM |
2291 | psymtabs for this objfile, and if any didn't know their ending text |
2292 | address, set it to our starting address. Take care to not set our | |
2293 | own ending address to our starting address, nor to set addresses on | |
2294 | `dependency' files that have both textlow and texthigh zero. */ | |
c906108c SS |
2295 | |
2296 | ALL_OBJFILE_PSYMTABS (objfile, p1) | |
c5aa993b | 2297 | { |
5afc051b | 2298 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) |
c5aa993b | 2299 | { |
5afc051b | 2300 | p1->texthigh = pst->textlow; |
c5aa993b | 2301 | /* if this file has only data, then make textlow match texthigh */ |
5afc051b JB |
2302 | if (p1->textlow == 0) |
2303 | p1->textlow = p1->texthigh; | |
c5aa993b JM |
2304 | } |
2305 | } | |
c906108c SS |
2306 | } |
2307 | ||
2308 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
c906108c SS |
2309 | |
2310 | pst->n_global_syms = | |
063e58ba MD |
2311 | objfile->global_psymbols.next - (objfile->global_psymbols.list |
2312 | + pst->globals_offset); | |
c906108c | 2313 | pst->n_static_syms = |
063e58ba MD |
2314 | objfile->static_psymbols.next - (objfile->static_psymbols.list |
2315 | + pst->statics_offset); | |
c906108c SS |
2316 | |
2317 | pst->number_of_dependencies = number_dependencies; | |
2318 | if (number_dependencies) | |
2319 | { | |
2320 | pst->dependencies = (struct partial_symtab **) | |
8b92e4d5 | 2321 | obstack_alloc (&objfile->objfile_obstack, |
83b94be5 | 2322 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c | 2323 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2324 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2325 | } |
2326 | else | |
2327 | pst->dependencies = 0; | |
2328 | ||
2329 | for (i = 0; i < num_includes; i++) | |
2330 | { | |
2331 | struct partial_symtab *subpst = | |
c5aa993b | 2332 | allocate_psymtab (include_list[i], objfile); |
c906108c | 2333 | |
b8fbeb18 | 2334 | /* Copy the sesction_offsets array from the main psymtab. */ |
c906108c SS |
2335 | subpst->section_offsets = pst->section_offsets; |
2336 | subpst->read_symtab_private = | |
e38df1d0 | 2337 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symloc)); |
c5aa993b JM |
2338 | LDSYMOFF (subpst) = |
2339 | LDSYMLEN (subpst) = | |
5afc051b JB |
2340 | subpst->textlow = |
2341 | subpst->texthigh = 0; | |
c906108c SS |
2342 | |
2343 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2344 | shared by the entire set of include files. FIXME-someday. */ |
c906108c | 2345 | subpst->dependencies = (struct partial_symtab **) |
8b92e4d5 | 2346 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2347 | sizeof (struct partial_symtab *)); |
2348 | subpst->dependencies[0] = pst; | |
2349 | subpst->number_of_dependencies = 1; | |
2350 | ||
2351 | subpst->globals_offset = | |
2352 | subpst->n_global_syms = | |
c5aa993b JM |
2353 | subpst->statics_offset = |
2354 | subpst->n_static_syms = 0; | |
c906108c SS |
2355 | |
2356 | subpst->readin = 0; | |
2357 | subpst->symtab = 0; | |
2358 | subpst->read_symtab = pst->read_symtab; | |
2359 | } | |
2360 | ||
2361 | sort_pst_symbols (pst); | |
2362 | ||
c906108c SS |
2363 | if (num_includes == 0 |
2364 | && number_dependencies == 0 | |
2365 | && pst->n_global_syms == 0 | |
2366 | && pst->n_static_syms == 0 | |
2367 | && has_line_numbers == 0) | |
2368 | { | |
2369 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2370 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2371 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b JM |
2372 | any symbols in them. There can be a lot of them. But this check |
2373 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
2374 | is not empty, but we don't realize that. Fixing that without slowing | |
2375 | things down might be tricky. */ | |
c906108c SS |
2376 | |
2377 | discard_psymtab (pst); | |
2378 | ||
2379 | /* Indicate that psymtab was thrown away. */ | |
c5aa993b | 2380 | pst = (struct partial_symtab *) NULL; |
c906108c SS |
2381 | } |
2382 | return pst; | |
2383 | } | |
2384 | \f | |
2385 | static void | |
fba45db2 | 2386 | dbx_psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c SS |
2387 | { |
2388 | struct cleanup *old_chain; | |
2389 | int i; | |
c5aa993b | 2390 | |
c906108c SS |
2391 | if (!pst) |
2392 | return; | |
2393 | ||
2394 | if (pst->readin) | |
2395 | { | |
063e58ba MD |
2396 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. \ |
2397 | Shouldn't happen.\n", | |
c5aa993b | 2398 | pst->filename); |
c906108c SS |
2399 | return; |
2400 | } | |
2401 | ||
2402 | /* Read in all partial symtabs on which this one is dependent */ | |
2403 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2404 | if (!pst->dependencies[i]->readin) | |
2405 | { | |
2406 | /* Inform about additional files that need to be read in. */ | |
2407 | if (info_verbose) | |
2408 | { | |
2409 | fputs_filtered (" ", gdb_stdout); | |
2410 | wrap_here (""); | |
2411 | fputs_filtered ("and ", gdb_stdout); | |
2412 | wrap_here (""); | |
2413 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 2414 | wrap_here (""); /* Flush output */ |
c906108c SS |
2415 | gdb_flush (gdb_stdout); |
2416 | } | |
2417 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); | |
2418 | } | |
2419 | ||
c5aa993b | 2420 | if (LDSYMLEN (pst)) /* Otherwise it's a dummy */ |
c906108c SS |
2421 | { |
2422 | /* Init stuff necessary for reading in symbols */ | |
2423 | stabsread_init (); | |
2424 | buildsym_init (); | |
a0b3c4fd | 2425 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c SS |
2426 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
2427 | symbol_size = SYMBOL_SIZE (pst); | |
2428 | ||
2429 | /* Read in this file's symbols */ | |
2430 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); | |
2431 | read_ofile_symtab (pst); | |
c906108c SS |
2432 | |
2433 | do_cleanups (old_chain); | |
2434 | } | |
2435 | ||
2436 | pst->readin = 1; | |
2437 | } | |
2438 | ||
2439 | /* Read in all of the symbols for a given psymtab for real. | |
2440 | Be verbose about it if the user wants that. */ | |
2441 | ||
2442 | static void | |
fba45db2 | 2443 | dbx_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2444 | { |
2445 | bfd *sym_bfd; | |
086df311 | 2446 | struct cleanup *back_to = NULL; |
c906108c SS |
2447 | |
2448 | if (!pst) | |
2449 | return; | |
2450 | ||
2451 | if (pst->readin) | |
2452 | { | |
063e58ba MD |
2453 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. \ |
2454 | Shouldn't happen.\n", | |
c5aa993b | 2455 | pst->filename); |
c906108c SS |
2456 | return; |
2457 | } | |
2458 | ||
c5aa993b | 2459 | if (LDSYMLEN (pst) || pst->number_of_dependencies) |
c906108c SS |
2460 | { |
2461 | /* Print the message now, before reading the string table, | |
c5aa993b | 2462 | to avoid disconcerting pauses. */ |
c906108c SS |
2463 | if (info_verbose) |
2464 | { | |
2465 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
2466 | gdb_flush (gdb_stdout); | |
2467 | } | |
2468 | ||
2469 | sym_bfd = pst->objfile->obfd; | |
2470 | ||
2471 | next_symbol_text_func = dbx_next_symbol_text; | |
2472 | ||
086df311 DJ |
2473 | if (DBX_STAB_SECTION (pst->objfile)) |
2474 | { | |
2475 | stabs_data | |
ac8035ab | 2476 | = symfile_relocate_debug_section (pst->objfile, |
086df311 DJ |
2477 | DBX_STAB_SECTION (pst->objfile), |
2478 | NULL); | |
2479 | if (stabs_data) | |
063e58ba MD |
2480 | back_to = make_cleanup (free_current_contents, |
2481 | (void *) &stabs_data); | |
086df311 DJ |
2482 | } |
2483 | ||
c906108c SS |
2484 | dbx_psymtab_to_symtab_1 (pst); |
2485 | ||
086df311 DJ |
2486 | if (back_to) |
2487 | do_cleanups (back_to); | |
2488 | ||
c906108c SS |
2489 | /* Match with global symbols. This only needs to be done once, |
2490 | after all of the symtabs and dependencies have been read in. */ | |
2491 | scan_file_globals (pst->objfile); | |
2492 | ||
2493 | /* Finish up the debug error message. */ | |
2494 | if (info_verbose) | |
2495 | printf_filtered ("done.\n"); | |
2496 | } | |
2497 | } | |
2498 | ||
2499 | /* Read in a defined section of a specific object file's symbols. */ | |
c5aa993b | 2500 | |
c906108c | 2501 | static void |
fba45db2 | 2502 | read_ofile_symtab (struct partial_symtab *pst) |
c906108c | 2503 | { |
52f0bd74 AC |
2504 | char *namestring; |
2505 | struct external_nlist *bufp; | |
c906108c SS |
2506 | struct internal_nlist nlist; |
2507 | unsigned char type; | |
2508 | unsigned max_symnum; | |
52f0bd74 | 2509 | bfd *abfd; |
c906108c SS |
2510 | struct objfile *objfile; |
2511 | int sym_offset; /* Offset to start of symbols to read */ | |
2512 | int sym_size; /* Size of symbols to read */ | |
2513 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
2514 | int text_size; /* Size of text segment for symbols */ | |
2515 | struct section_offsets *section_offsets; | |
2516 | ||
2517 | objfile = pst->objfile; | |
c5aa993b JM |
2518 | sym_offset = LDSYMOFF (pst); |
2519 | sym_size = LDSYMLEN (pst); | |
5afc051b JB |
2520 | text_offset = pst->textlow; |
2521 | text_size = pst->texthigh - pst->textlow; | |
b8fbeb18 EZ |
2522 | /* This cannot be simply objfile->section_offsets because of |
2523 | elfstab_offset_sections() which initializes the psymtab section | |
2524 | offsets information in a special way, and that is different from | |
2525 | objfile->section_offsets. */ | |
c906108c SS |
2526 | section_offsets = pst->section_offsets; |
2527 | ||
2528 | current_objfile = objfile; | |
2529 | subfile_stack = NULL; | |
2530 | ||
2531 | stringtab_global = DBX_STRINGTAB (objfile); | |
2532 | last_source_file = NULL; | |
2533 | ||
2534 | abfd = objfile->obfd; | |
2535 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ | |
2536 | symbuf_end = symbuf_idx = 0; | |
086df311 DJ |
2537 | symbuf_read = 0; |
2538 | symbuf_left = sym_offset + sym_size; | |
c906108c SS |
2539 | |
2540 | /* It is necessary to actually read one symbol *before* the start | |
2541 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
2542 | occurs before the N_SO symbol. | |
2543 | ||
2544 | Detecting this in read_dbx_symtab | |
2545 | would slow down initial readin, so we look for it here instead. */ | |
c5aa993b | 2546 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c | 2547 | { |
086df311 | 2548 | stabs_seek (sym_offset - symbol_size); |
c906108c SS |
2549 | fill_symbuf (abfd); |
2550 | bufp = &symbuf[symbuf_idx++]; | |
2551 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2552 | OBJSTAT (objfile, n_stabs++); | |
2553 | ||
83b94be5 | 2554 | namestring = set_namestring (objfile, &nlist); |
c906108c SS |
2555 | |
2556 | processing_gcc_compilation = 0; | |
2557 | if (nlist.n_type == N_TEXT) | |
2558 | { | |
2559 | const char *tempstring = namestring; | |
2560 | ||
91f54576 | 2561 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2562 | processing_gcc_compilation = 1; |
91f54576 | 2563 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2564 | processing_gcc_compilation = 2; |
2565 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) | |
2566 | ++tempstring; | |
91f54576 | 2567 | if (strncmp (tempstring, "__gnu_compiled", 14) == 0) |
c906108c SS |
2568 | processing_gcc_compilation = 2; |
2569 | } | |
2570 | ||
2571 | /* Try to select a C++ demangling based on the compilation unit | |
c5aa993b | 2572 | producer. */ |
c906108c | 2573 | |
8052a17a JM |
2574 | #if 0 |
2575 | /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't | |
2576 | know whether it will use the old style or v3 mangling. */ | |
c906108c SS |
2577 | if (processing_gcc_compilation) |
2578 | { | |
2579 | if (AUTO_DEMANGLING) | |
2580 | { | |
2581 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
2582 | } | |
2583 | } | |
8052a17a | 2584 | #endif |
c906108c SS |
2585 | } |
2586 | else | |
2587 | { | |
2588 | /* The N_SO starting this symtab is the first symbol, so we | |
c5aa993b JM |
2589 | better not check the symbol before it. I'm not this can |
2590 | happen, but it doesn't hurt to check for it. */ | |
086df311 | 2591 | stabs_seek (sym_offset); |
c906108c SS |
2592 | processing_gcc_compilation = 0; |
2593 | } | |
2594 | ||
2595 | if (symbuf_idx == symbuf_end) | |
2596 | fill_symbuf (abfd); | |
2597 | bufp = &symbuf[symbuf_idx]; | |
2598 | if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO) | |
8a3fe4f8 | 2599 | error (_("First symbol in segment of executable not a source symbol")); |
c906108c SS |
2600 | |
2601 | max_symnum = sym_size / symbol_size; | |
2602 | ||
2603 | for (symnum = 0; | |
2604 | symnum < max_symnum; | |
2605 | symnum++) | |
2606 | { | |
2607 | QUIT; /* Allow this to be interruptable */ | |
2608 | if (symbuf_idx == symbuf_end) | |
c5aa993b | 2609 | fill_symbuf (abfd); |
c906108c SS |
2610 | bufp = &symbuf[symbuf_idx++]; |
2611 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2612 | OBJSTAT (objfile, n_stabs++); | |
2613 | ||
2614 | type = bfd_h_get_8 (abfd, bufp->e_type); | |
2615 | ||
83b94be5 | 2616 | namestring = set_namestring (objfile, &nlist); |
c906108c | 2617 | |
c5aa993b JM |
2618 | if (type & N_STAB) |
2619 | { | |
7b1f21e5 PP |
2620 | if (sizeof (nlist.n_value) > 4 |
2621 | /* We are a 64-bit debugger debugging a 32-bit program. */ | |
2622 | && (type == N_LSYM || type == N_PSYM)) | |
2623 | /* We have to be careful with the n_value in the case of N_LSYM | |
2624 | and N_PSYM entries, because they are signed offsets from frame | |
2625 | pointer, but we actually read them as unsigned 32-bit values. | |
2626 | This is not a problem for 32-bit debuggers, for which negative | |
2627 | values end up being interpreted correctly (as negative | |
2628 | offsets) due to integer overflow. | |
2629 | But we need to sign-extend the value for 64-bit debuggers, | |
2630 | or we'll end up interpreting negative values as very large | |
2631 | positive offsets. */ | |
2632 | nlist.n_value = (nlist.n_value ^ 0x80000000) - 0x80000000; | |
c906108c SS |
2633 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
2634 | namestring, section_offsets, objfile); | |
c5aa993b | 2635 | } |
c906108c SS |
2636 | /* We skip checking for a new .o or -l file; that should never |
2637 | happen in this routine. */ | |
2638 | else if (type == N_TEXT) | |
2639 | { | |
2640 | /* I don't think this code will ever be executed, because | |
2641 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
2642 | the N_SO symbol which starts this source file. | |
2643 | However, there is no reason not to accept | |
2644 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
2645 | ||
91f54576 | 2646 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2647 | processing_gcc_compilation = 1; |
91f54576 | 2648 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2649 | processing_gcc_compilation = 2; |
2650 | ||
8052a17a JM |
2651 | #if 0 |
2652 | /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't | |
2653 | know whether it will use the old style or v3 mangling. */ | |
c906108c SS |
2654 | if (AUTO_DEMANGLING) |
2655 | { | |
2656 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
2657 | } | |
8052a17a | 2658 | #endif |
c906108c | 2659 | } |
c5aa993b JM |
2660 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
2661 | || type == (unsigned char) N_NBTEXT | |
2662 | ) | |
2663 | { | |
c906108c SS |
2664 | /* Global symbol: see if we came across a dbx defintion for |
2665 | a corresponding symbol. If so, store the value. Remove | |
2666 | syms from the chain when their values are stored, but | |
2667 | search the whole chain, as there may be several syms from | |
2668 | different files with the same name. */ | |
2669 | /* This is probably not true. Since the files will be read | |
2670 | in one at a time, each reference to a global symbol will | |
2671 | be satisfied in each file as it appears. So we skip this | |
2672 | section. */ | |
2673 | ; | |
c5aa993b | 2674 | } |
c906108c SS |
2675 | } |
2676 | ||
c906108c SS |
2677 | /* In a Solaris elf file, this variable, which comes from the |
2678 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
5afc051b | 2679 | which comes from pst->textlow is correct. */ |
c906108c SS |
2680 | if (last_source_start_addr == 0) |
2681 | last_source_start_addr = text_offset; | |
2682 | ||
2683 | /* In reordered executables last_source_start_addr may not be the | |
2684 | lower bound for this symtab, instead use text_offset which comes | |
5afc051b | 2685 | from pst->textlow which is correct. */ |
c906108c SS |
2686 | if (last_source_start_addr > text_offset) |
2687 | last_source_start_addr = text_offset; | |
2688 | ||
063e58ba MD |
2689 | pst->symtab = end_symtab (text_offset + text_size, objfile, |
2690 | SECT_OFF_TEXT (objfile)); | |
c906108c | 2691 | |
c906108c | 2692 | end_stabs (); |
e9112110 PA |
2693 | |
2694 | current_objfile = NULL; | |
c906108c | 2695 | } |
c906108c | 2696 | \f |
c5aa993b | 2697 | |
c906108c SS |
2698 | /* This handles a single symbol from the symbol-file, building symbols |
2699 | into a GDB symtab. It takes these arguments and an implicit argument. | |
2700 | ||
2701 | TYPE is the type field of the ".stab" symbol entry. | |
2702 | DESC is the desc field of the ".stab" entry. | |
2703 | VALU is the value field of the ".stab" entry. | |
2704 | NAME is the symbol name, in our address space. | |
e31272c3 MK |
2705 | SECTION_OFFSETS is a set of amounts by which the sections of this |
2706 | object file were relocated when it was loaded into memory. Note | |
2707 | that these section_offsets are not the objfile->section_offsets but | |
2708 | the pst->section_offsets. All symbols that refer to memory | |
2709 | locations need to be offset by these amounts. | |
2710 | OBJFILE is the object file from which we are reading symbols. It | |
2711 | is used in end_symtab. */ | |
c906108c SS |
2712 | |
2713 | void | |
fba45db2 KB |
2714 | process_one_symbol (int type, int desc, CORE_ADDR valu, char *name, |
2715 | struct section_offsets *section_offsets, | |
2716 | struct objfile *objfile) | |
c906108c | 2717 | { |
5e2b427d | 2718 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 2719 | struct context_stack *new; |
e31272c3 MK |
2720 | /* This remembers the address of the start of a function. It is |
2721 | used because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries | |
2722 | are relative to the current function's start address. On systems | |
2723 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, | |
2724 | and is used to relocate these symbol types rather than | |
2725 | SECTION_OFFSETS. */ | |
c906108c SS |
2726 | static CORE_ADDR function_start_offset; |
2727 | ||
e31272c3 MK |
2728 | /* This holds the address of the start of a function, without the |
2729 | system peculiarities of function_start_offset. */ | |
a1b9830c DJ |
2730 | static CORE_ADDR last_function_start; |
2731 | ||
54c7009d EZ |
2732 | /* If this is nonzero, we've seen an N_SLINE since the start of the |
2733 | current function. We use this to tell us to move the first sline | |
2734 | to the beginning of the function regardless of what its given | |
2735 | value is. */ | |
a1b9830c DJ |
2736 | static int sline_found_in_function = 1; |
2737 | ||
e31272c3 MK |
2738 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this |
2739 | source file. Used to detect the SunPRO solaris compiler. */ | |
c906108c SS |
2740 | static int n_opt_found; |
2741 | ||
2742 | /* The stab type used for the definition of the last function. | |
2743 | N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */ | |
2744 | static int function_stab_type = 0; | |
2745 | ||
2746 | if (!block_address_function_relative) | |
e31272c3 MK |
2747 | { |
2748 | /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the | |
2749 | function start address, so just use the text offset. */ | |
2750 | function_start_offset = | |
2751 | ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); | |
2752 | } | |
c906108c | 2753 | |
e31272c3 MK |
2754 | /* Something is wrong if we see real data before seeing a source |
2755 | file name. */ | |
c906108c | 2756 | |
c5aa993b | 2757 | if (last_source_file == NULL && type != (unsigned char) N_SO) |
c906108c SS |
2758 | { |
2759 | /* Ignore any symbols which appear before an N_SO symbol. | |
c5aa993b JM |
2760 | Currently no one puts symbols there, but we should deal |
2761 | gracefully with the case. A complain()t might be in order, | |
2762 | but this should not be an error (). */ | |
c906108c SS |
2763 | return; |
2764 | } | |
2765 | ||
2766 | switch (type) | |
2767 | { | |
2768 | case N_FUN: | |
2769 | case N_FNAME: | |
2770 | ||
2771 | if (*name == '\000') | |
2772 | { | |
e31272c3 MK |
2773 | /* This N_FUN marks the end of a function. This closes off |
2774 | the current block. */ | |
df8a16a1 | 2775 | struct block *block; |
0c5e171a KD |
2776 | |
2777 | if (context_stack_depth <= 0) | |
2778 | { | |
23136709 | 2779 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2780 | break; |
2781 | } | |
2782 | ||
6b37567a JJ |
2783 | /* The following check is added before recording line 0 at |
2784 | end of function so as to handle hand-generated stabs | |
e31272c3 MK |
2785 | which may have an N_FUN stabs at the end of the function, |
2786 | but no N_SLINE stabs. */ | |
6b37567a | 2787 | if (sline_found_in_function) |
fbf65064 UW |
2788 | { |
2789 | CORE_ADDR addr = last_function_start + valu; | |
2790 | record_line (current_subfile, 0, | |
2791 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
2792 | } | |
6b37567a | 2793 | |
c906108c SS |
2794 | within_function = 0; |
2795 | new = pop_context (); | |
2796 | ||
2797 | /* Make a block for the local symbols within. */ | |
df8a16a1 DJ |
2798 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
2799 | new->start_addr, new->start_addr + valu, | |
2800 | objfile); | |
2801 | ||
2802 | /* For C++, set the block's scope. */ | |
2803 | if (SYMBOL_LANGUAGE (new->name) == language_cplus) | |
2804 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, | |
2805 | "", 0); | |
c906108c SS |
2806 | |
2807 | /* May be switching to an assembler file which may not be using | |
2808 | block relative stabs, so reset the offset. */ | |
2809 | if (block_address_function_relative) | |
2810 | function_start_offset = 0; | |
2811 | ||
2812 | break; | |
2813 | } | |
2814 | ||
a1b9830c DJ |
2815 | sline_found_in_function = 0; |
2816 | ||
e31272c3 | 2817 | /* Relocate for dynamic loading. */ |
b8fbeb18 | 2818 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
5e2b427d | 2819 | valu = gdbarch_smash_text_address (gdbarch, valu); |
a1b9830c DJ |
2820 | last_function_start = valu; |
2821 | ||
c906108c SS |
2822 | goto define_a_symbol; |
2823 | ||
2824 | case N_LBRAC: | |
2825 | /* This "symbol" just indicates the start of an inner lexical | |
c5aa993b | 2826 | context within a function. */ |
c906108c SS |
2827 | |
2828 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2829 | if (n_opt_found && desc == 1) | |
2830 | break; | |
2831 | ||
2832 | if (block_address_function_relative) | |
2833 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
2834 | valu += function_start_offset; | |
2835 | else | |
2836 | /* On most machines, the block addresses are relative to the | |
2837 | N_SO, the linker did not relocate them (sigh). */ | |
2838 | valu += last_source_start_addr; | |
2839 | ||
c906108c SS |
2840 | new = push_context (desc, valu); |
2841 | break; | |
2842 | ||
2843 | case N_RBRAC: | |
2844 | /* This "symbol" just indicates the end of an inner lexical | |
c5aa993b | 2845 | context that was started with N_LBRAC. */ |
c906108c SS |
2846 | |
2847 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2848 | if (n_opt_found && desc == 1) | |
2849 | break; | |
2850 | ||
2851 | if (block_address_function_relative) | |
2852 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
2853 | valu += function_start_offset; | |
2854 | else | |
2855 | /* On most machines, the block addresses are relative to the | |
2856 | N_SO, the linker did not relocate them (sigh). */ | |
2857 | valu += last_source_start_addr; | |
2858 | ||
0c5e171a KD |
2859 | if (context_stack_depth <= 0) |
2860 | { | |
23136709 | 2861 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2862 | break; |
2863 | } | |
2864 | ||
c5aa993b | 2865 | new = pop_context (); |
c906108c | 2866 | if (desc != new->depth) |
23136709 | 2867 | lbrac_mismatch_complaint (symnum); |
c906108c | 2868 | |
35156bae | 2869 | if (local_symbols != NULL) |
1f077a3e | 2870 | { |
35156bae DJ |
2871 | /* GCC development snapshots from March to December of |
2872 | 2000 would output N_LSYM entries after N_LBRAC | |
2873 | entries. As a consequence, these symbols are simply | |
2874 | discarded. Complain if this is the case. */ | |
2875 | complaint (&symfile_complaints, _("\ | |
e31272c3 | 2876 | misplaced N_LBRAC entry; discarding local symbols which have \ |
e2e0b3e5 | 2877 | no enclosing block")); |
1f077a3e | 2878 | } |
35156bae | 2879 | local_symbols = new->locals; |
c906108c | 2880 | |
35156bae | 2881 | if (context_stack_depth > 1) |
c906108c | 2882 | { |
e31272c3 MK |
2883 | /* This is not the outermost LBRAC...RBRAC pair in the |
2884 | function, its local symbols preceded it, and are the ones | |
2885 | just recovered from the context stack. Define the block | |
2886 | for them (but don't bother if the block contains no | |
2887 | symbols. Should we complain on blocks without symbols? | |
2888 | I can't think of any useful purpose for them). */ | |
c906108c SS |
2889 | if (local_symbols != NULL) |
2890 | { | |
e31272c3 MK |
2891 | /* Muzzle a compiler bug that makes end < start. |
2892 | ||
2893 | ??? Which compilers? Is this ever harmful?. */ | |
c906108c SS |
2894 | if (new->start_addr > valu) |
2895 | { | |
23136709 | 2896 | complaint (&symfile_complaints, |
e2e0b3e5 | 2897 | _("block start larger than block end")); |
c906108c SS |
2898 | new->start_addr = valu; |
2899 | } | |
2900 | /* Make a block for the local symbols within. */ | |
2901 | finish_block (0, &local_symbols, new->old_blocks, | |
2902 | new->start_addr, valu, objfile); | |
2903 | } | |
2904 | } | |
2905 | else | |
2906 | { | |
2907 | /* This is the outermost LBRAC...RBRAC pair. There is no | |
2908 | need to do anything; leave the symbols that preceded it | |
2909 | to be attached to the function's own block. We need to | |
2910 | indicate that we just moved outside of the function. */ | |
2911 | within_function = 0; | |
2912 | } | |
2913 | ||
c906108c SS |
2914 | break; |
2915 | ||
2916 | case N_FN: | |
2917 | case N_FN_SEQ: | |
e31272c3 MK |
2918 | /* This kind of symbol indicates the start of an object file. |
2919 | Relocate for dynamic loading. */ | |
b8fbeb18 | 2920 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2921 | break; |
2922 | ||
2923 | case N_SO: | |
e31272c3 MK |
2924 | /* This type of symbol indicates the start of data for one |
2925 | source file. Finish the symbol table of the previous source | |
2926 | file (if any) and start accumulating a new symbol table. | |
2927 | Relocate for dynamic loading. */ | |
b8fbeb18 | 2928 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2929 | |
2930 | n_opt_found = 0; | |
2931 | ||
c906108c SS |
2932 | if (last_source_file) |
2933 | { | |
2934 | /* Check if previous symbol was also an N_SO (with some | |
e31272c3 MK |
2935 | sanity checks). If so, that one was actually the |
2936 | directory name, and the current one is the real file | |
2937 | name. Patch things up. */ | |
c906108c SS |
2938 | if (previous_stab_code == (unsigned char) N_SO) |
2939 | { | |
2940 | patch_subfile_names (current_subfile, name); | |
2941 | break; /* Ignore repeated SOs */ | |
2942 | } | |
b8fbeb18 | 2943 | end_symtab (valu, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2944 | end_stabs (); |
2945 | } | |
2946 | ||
e31272c3 MK |
2947 | /* Null name means this just marks the end of text for this .o |
2948 | file. Don't start a new symtab in this case. */ | |
c906108c SS |
2949 | if (*name == '\000') |
2950 | break; | |
2951 | ||
2952 | if (block_address_function_relative) | |
c5aa993b | 2953 | function_start_offset = 0; |
c906108c SS |
2954 | |
2955 | start_stabs (); | |
2956 | start_symtab (name, NULL, valu); | |
2957 | record_debugformat ("stabs"); | |
2958 | break; | |
2959 | ||
2960 | case N_SOL: | |
e31272c3 MK |
2961 | /* This type of symbol indicates the start of data for a |
2962 | sub-source-file, one whose contents were copied or included | |
2963 | in the compilation of the main source file (whose name was | |
2964 | given in the N_SO symbol). Relocate for dynamic loading. */ | |
b8fbeb18 | 2965 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2966 | start_subfile (name, current_subfile->dirname); |
2967 | break; | |
2968 | ||
2969 | case N_BINCL: | |
2970 | push_subfile (); | |
2971 | add_new_header_file (name, valu); | |
2972 | start_subfile (name, current_subfile->dirname); | |
2973 | break; | |
2974 | ||
2975 | case N_EINCL: | |
2976 | start_subfile (pop_subfile (), current_subfile->dirname); | |
2977 | break; | |
2978 | ||
2979 | case N_EXCL: | |
2980 | add_old_header_file (name, valu); | |
2981 | break; | |
2982 | ||
2983 | case N_SLINE: | |
e31272c3 MK |
2984 | /* This type of "symbol" really just records one line-number -- |
2985 | core-address correspondence. Enter it in the line list for | |
2986 | this symbol table. */ | |
c906108c | 2987 | |
e31272c3 MK |
2988 | /* Relocate for dynamic loading and for ELF acc |
2989 | function-relative symbols. */ | |
c906108c SS |
2990 | valu += function_start_offset; |
2991 | ||
ceddaf06 MK |
2992 | /* GCC 2.95.3 emits the first N_SLINE stab somwehere in the |
2993 | middle of the prologue instead of right at the start of the | |
2994 | function. To deal with this we record the address for the | |
2995 | first N_SLINE stab to be the start of the function instead of | |
2996 | the listed location. We really shouldn't to this. When | |
2997 | compiling with optimization, this first N_SLINE stab might be | |
2998 | optimized away. Other (non-GCC) compilers don't emit this | |
2999 | stab at all. There is no real harm in having an extra | |
3000 | numbered line, although it can be a bit annoying for the | |
3001 | user. However, it totally screws up our testsuite. | |
3002 | ||
3003 | So for now, keep adjusting the address of the first N_SLINE | |
3004 | stab, but only for code compiled with GCC. */ | |
3005 | ||
a1b9830c DJ |
3006 | if (within_function && sline_found_in_function == 0) |
3007 | { | |
fbf65064 UW |
3008 | CORE_ADDR addr = processing_gcc_compilation == 2 ? |
3009 | last_function_start : valu; | |
3010 | record_line (current_subfile, desc, | |
3011 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
a1b9830c DJ |
3012 | sline_found_in_function = 1; |
3013 | } | |
3014 | else | |
fbf65064 UW |
3015 | record_line (current_subfile, desc, |
3016 | gdbarch_addr_bits_remove (gdbarch, valu)); | |
c906108c SS |
3017 | break; |
3018 | ||
3019 | case N_BCOMM: | |
3020 | common_block_start (name, objfile); | |
3021 | break; | |
3022 | ||
3023 | case N_ECOMM: | |
3024 | common_block_end (objfile); | |
3025 | break; | |
3026 | ||
e31272c3 MK |
3027 | /* The following symbol types need to have the appropriate |
3028 | offset added to their value; then we process symbol | |
3029 | definitions in the name. */ | |
c906108c | 3030 | |
e31272c3 MK |
3031 | case N_STSYM: /* Static symbol in data segment. */ |
3032 | case N_LCSYM: /* Static symbol in BSS segment. */ | |
3033 | case N_ROSYM: /* Static symbol in read-only data segment. */ | |
c5aa993b | 3034 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
e31272c3 MK |
3035 | Solaris 2's stabs-in-elf makes *most* symbols relative but |
3036 | leaves a few absolute (at least for Solaris 2.1 and version | |
3037 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on | |
3038 | the fence. .stab "foo:S...",N_STSYM is absolute (ld | |
3039 | relocates it) .stab "foo:V...",N_STSYM is relative (section | |
3040 | base subtracted). This leaves us no choice but to search for | |
3041 | the 'S' or 'V'... (or pass the whole section_offsets stuff | |
3042 | down ONE MORE function call level, which we really don't want | |
3043 | to do). */ | |
c906108c SS |
3044 | { |
3045 | char *p; | |
3046 | ||
e31272c3 MK |
3047 | /* Normal object file and NLMs have non-zero text seg offsets, |
3048 | but don't need their static syms offset in this fashion. | |
3049 | XXX - This is really a crock that should be fixed in the | |
3050 | solib handling code so that I don't have to work around it | |
3051 | here. */ | |
c906108c SS |
3052 | |
3053 | if (!symfile_relocatable) | |
3054 | { | |
3055 | p = strchr (name, ':'); | |
3056 | if (p != 0 && p[1] == 'S') | |
3057 | { | |
3058 | /* The linker relocated it. We don't want to add an | |
e31272c3 MK |
3059 | elfstab_offset_sections-type offset, but we *do* |
3060 | want to add whatever solib.c passed to | |
3061 | symbol_file_add as addr (this is known to affect | |
3062 | SunOS 4, and I suspect ELF too). Since | |
3063 | elfstab_offset_sections currently does not muck | |
3064 | with the text offset (there is no Ttext.text | |
c906108c | 3065 | symbol), we can get addr from the text offset. If |
e31272c3 MK |
3066 | elfstab_offset_sections ever starts dealing with |
3067 | the text offset, and we still need to do this, we | |
3068 | need to invent a SECT_OFF_ADDR_KLUDGE or something. */ | |
b8fbeb18 | 3069 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3070 | goto define_a_symbol; |
3071 | } | |
3072 | } | |
e31272c3 MK |
3073 | /* Since it's not the kludge case, re-dispatch to the right |
3074 | handler. */ | |
c5aa993b JM |
3075 | switch (type) |
3076 | { | |
3077 | case N_STSYM: | |
3078 | goto case_N_STSYM; | |
3079 | case N_LCSYM: | |
3080 | goto case_N_LCSYM; | |
3081 | case N_ROSYM: | |
3082 | goto case_N_ROSYM; | |
3083 | default: | |
e31272c3 | 3084 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3085 | _("failed internal consistency check")); |
c5aa993b | 3086 | } |
c906108c SS |
3087 | } |
3088 | ||
e31272c3 MK |
3089 | case_N_STSYM: /* Static symbol in data segment. */ |
3090 | case N_DSLINE: /* Source line number, data segment. */ | |
b8fbeb18 | 3091 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3092 | goto define_a_symbol; |
3093 | ||
e31272c3 MK |
3094 | case_N_LCSYM: /* Static symbol in BSS segment. */ |
3095 | case N_BSLINE: /* Source line number, BSS segment. */ | |
3096 | /* N_BROWS: overlaps with N_BSLINE. */ | |
b8fbeb18 | 3097 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3098 | goto define_a_symbol; |
3099 | ||
e31272c3 | 3100 | case_N_ROSYM: /* Static symbol in read-only data segment. */ |
b8fbeb18 | 3101 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA (objfile)); |
c906108c SS |
3102 | goto define_a_symbol; |
3103 | ||
e31272c3 MK |
3104 | case N_ENTRY: /* Alternate entry point. */ |
3105 | /* Relocate for dynamic loading. */ | |
b8fbeb18 | 3106 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3107 | goto define_a_symbol; |
3108 | ||
e31272c3 MK |
3109 | /* The following symbol types we don't know how to process. |
3110 | Handle them in a "default" way, but complain to people who | |
3111 | care. */ | |
c906108c | 3112 | default: |
e31272c3 MK |
3113 | case N_CATCH: /* Exception handler catcher. */ |
3114 | case N_EHDECL: /* Exception handler name. */ | |
3115 | case N_PC: /* Global symbol in Pascal. */ | |
3116 | case N_M2C: /* Modula-2 compilation unit. */ | |
3117 | /* N_MOD2: overlaps with N_EHDECL. */ | |
3118 | case N_SCOPE: /* Modula-2 scope information. */ | |
3119 | case N_ECOML: /* End common (local name). */ | |
3120 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
c906108c SS |
3121 | case N_NBDATA: |
3122 | case N_NBBSS: | |
3123 | case N_NBSTS: | |
3124 | case N_NBLCS: | |
bb599908 | 3125 | unknown_symtype_complaint (hex_string (type)); |
c906108c SS |
3126 | /* FALLTHROUGH */ |
3127 | ||
e31272c3 MK |
3128 | /* The following symbol types don't need the address field |
3129 | relocated, since it is either unused, or is absolute. */ | |
c906108c | 3130 | define_a_symbol: |
e31272c3 MK |
3131 | case N_GSYM: /* Global variable. */ |
3132 | case N_NSYMS: /* Number of symbols (Ultrix). */ | |
3133 | case N_NOMAP: /* No map? (Ultrix). */ | |
3134 | case N_RSYM: /* Register variable. */ | |
3135 | case N_DEFD: /* Modula-2 GNU module dependency. */ | |
3136 | case N_SSYM: /* Struct or union element. */ | |
3137 | case N_LSYM: /* Local symbol in stack. */ | |
3138 | case N_PSYM: /* Parameter variable. */ | |
3139 | case N_LENG: /* Length of preceding symbol type. */ | |
c906108c SS |
3140 | if (name) |
3141 | { | |
3142 | int deftype; | |
3143 | char *colon_pos = strchr (name, ':'); | |
3144 | if (colon_pos == NULL) | |
3145 | deftype = '\0'; | |
3146 | else | |
3147 | deftype = colon_pos[1]; | |
3148 | ||
3149 | switch (deftype) | |
3150 | { | |
3151 | case 'f': | |
3152 | case 'F': | |
3153 | function_stab_type = type; | |
3154 | ||
e31272c3 MK |
3155 | /* Deal with the SunPRO 3.0 compiler which omits the |
3156 | address from N_FUN symbols. */ | |
c906108c | 3157 | if (type == N_FUN |
e31272c3 | 3158 | && valu == ANOFFSET (section_offsets, |
203c3895 | 3159 | SECT_OFF_TEXT (objfile)) |
5e2b427d | 3160 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9a058a09 KB |
3161 | { |
3162 | CORE_ADDR minsym_valu = | |
3163 | find_stab_function_addr (name, last_source_file, objfile); | |
3164 | ||
e31272c3 MK |
3165 | /* The function find_stab_function_addr will return |
3166 | 0 if the minimal symbol wasn't found. | |
3167 | (Unfortunately, this might also be a valid | |
3168 | address.) Anyway, if it *does* return 0, it is | |
3169 | likely that the value was set correctly to begin | |
3170 | with... */ | |
9a058a09 KB |
3171 | if (minsym_valu != 0) |
3172 | valu = minsym_valu; | |
3173 | } | |
c906108c | 3174 | |
c906108c | 3175 | if (block_address_function_relative) |
e31272c3 | 3176 | /* For Solaris 2 compilers, the block addresses and |
c906108c | 3177 | N_SLINE's are relative to the start of the |
e31272c3 MK |
3178 | function. On normal systems, and when using GCC on |
3179 | Solaris 2, these addresses are just absolute, or | |
c906108c SS |
3180 | relative to the N_SO, depending on |
3181 | BLOCK_ADDRESS_ABSOLUTE. */ | |
c5aa993b | 3182 | function_start_offset = valu; |
c906108c SS |
3183 | |
3184 | within_function = 1; | |
c3f6f71d JM |
3185 | |
3186 | if (context_stack_depth > 1) | |
3187 | { | |
23136709 | 3188 | complaint (&symfile_complaints, |
063e58ba MD |
3189 | _("unmatched N_LBRAC before symtab pos %d"), |
3190 | symnum); | |
c3f6f71d JM |
3191 | break; |
3192 | } | |
3193 | ||
c906108c SS |
3194 | if (context_stack_depth > 0) |
3195 | { | |
df8a16a1 DJ |
3196 | struct block *block; |
3197 | ||
c906108c SS |
3198 | new = pop_context (); |
3199 | /* Make a block for the local symbols within. */ | |
df8a16a1 DJ |
3200 | block = finish_block (new->name, &local_symbols, |
3201 | new->old_blocks, new->start_addr, | |
3202 | valu, objfile); | |
3203 | ||
3204 | /* For C++, set the block's scope. */ | |
3205 | if (SYMBOL_LANGUAGE (new->name) == language_cplus) | |
3206 | cp_set_block_scope (new->name, block, | |
3207 | &objfile->objfile_obstack, | |
3208 | "", 0); | |
c906108c | 3209 | } |
c906108c SS |
3210 | |
3211 | new = push_context (0, valu); | |
3212 | new->name = define_symbol (valu, name, desc, type, objfile); | |
3213 | break; | |
3214 | ||
3215 | default: | |
3216 | define_symbol (valu, name, desc, type, objfile); | |
3217 | break; | |
3218 | } | |
3219 | } | |
3220 | break; | |
3221 | ||
c5aa993b JM |
3222 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
3223 | for a bunch of other flags, too. Someday we may parse their | |
3224 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
e31272c3 | 3225 | case N_OPT: /* Solaris 2: Compiler options. */ |
c906108c SS |
3226 | if (name) |
3227 | { | |
6314a349 | 3228 | if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
3229 | { |
3230 | processing_gcc_compilation = 2; | |
8052a17a | 3231 | #if 0 /* Works, but is experimental. -fnf */ |
e31272c3 MK |
3232 | /* For now, stay with AUTO_DEMANGLING for g++ output, as |
3233 | we don't know whether it will use the old style or v3 | |
3234 | mangling. */ | |
c906108c SS |
3235 | if (AUTO_DEMANGLING) |
3236 | { | |
3237 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
3238 | } | |
3239 | #endif | |
3240 | } | |
3241 | else | |
3242 | n_opt_found = 1; | |
3243 | } | |
3244 | break; | |
3245 | ||
51cc5b07 AC |
3246 | case N_MAIN: /* Name of main routine. */ |
3247 | /* FIXME: If one has a symbol file with N_MAIN and then replaces | |
3248 | it with a symbol file with "main" and without N_MAIN. I'm | |
3249 | not sure exactly what rule to follow but probably something | |
3250 | like: N_MAIN takes precedence over "main" no matter what | |
3251 | objfile it is in; If there is more than one N_MAIN, choose | |
3252 | the one in the symfile_objfile; If there is more than one | |
3253 | N_MAIN within a given objfile, complain() and choose | |
3254 | arbitrarily. (kingdon) */ | |
3255 | if (name != NULL) | |
3256 | set_main_name (name); | |
3257 | break; | |
3258 | ||
c5aa993b | 3259 | /* The following symbol types can be ignored. */ |
e31272c3 MK |
3260 | case N_OBJ: /* Solaris 2: Object file dir and name. */ |
3261 | case N_PATCH: /* Solaris 2: Patch Run Time Checker. */ | |
3262 | /* N_UNDF: Solaris 2: File separator mark. */ | |
3263 | /* N_UNDF: -- we will never encounter it, since we only process | |
3264 | one file's symbols at once. */ | |
3265 | case N_ENDM: /* Solaris 2: End of module. */ | |
c906108c SS |
3266 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
3267 | break; | |
3268 | } | |
3269 | ||
3270 | /* '#' is a GNU C extension to allow one symbol to refer to another | |
3271 | related symbol. | |
3272 | ||
3273 | Generally this is used so that an alias can refer to its main | |
c5aa993b | 3274 | symbol. */ |
c906108c SS |
3275 | if (name[0] == '#') |
3276 | { | |
e31272c3 MK |
3277 | /* Initialize symbol reference names and determine if this is a |
3278 | definition. If a symbol reference is being defined, go ahead | |
3279 | and add it. Otherwise, just return. */ | |
c906108c SS |
3280 | |
3281 | char *s = name; | |
3282 | int refnum; | |
3283 | ||
3284 | /* If this stab defines a new reference ID that is not on the | |
c5aa993b | 3285 | reference list, then put it on the reference list. |
c906108c | 3286 | |
c5aa993b JM |
3287 | We go ahead and advance NAME past the reference, even though |
3288 | it is not strictly necessary at this time. */ | |
c906108c SS |
3289 | refnum = symbol_reference_defined (&s); |
3290 | if (refnum >= 0) | |
3291 | if (!ref_search (refnum)) | |
3292 | ref_add (refnum, 0, name, valu); | |
3293 | name = s; | |
3294 | } | |
3295 | ||
c906108c SS |
3296 | previous_stab_code = type; |
3297 | } | |
3298 | \f | |
3299 | /* FIXME: The only difference between this and elfstab_build_psymtabs | |
3300 | is the call to install_minimal_symbols for elf, and the support for | |
3301 | split sections. If the differences are really that small, the code | |
3302 | should be shared. */ | |
3303 | ||
3304 | /* Scan and build partial symbols for an coff symbol file. | |
3305 | The coff file has already been processed to get its minimal symbols. | |
3306 | ||
3307 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3308 | rolled into one. | |
3309 | ||
3310 | OBJFILE is the object file we are reading symbols from. | |
3311 | ADDR is the address relative to which the symbols are (e.g. | |
3312 | the base address of the text segment). | |
c906108c SS |
3313 | TEXTADDR is the address of the text section. |
3314 | TEXTSIZE is the size of the text section. | |
3315 | STABSECTS is the list of .stab sections in OBJFILE. | |
3316 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
3317 | .stabstr section exists. | |
3318 | ||
3319 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
3320 | adjusted for coff details. */ | |
3321 | ||
3322 | void | |
c67a9c90 | 3323 | coffstab_build_psymtabs (struct objfile *objfile, |
fba45db2 KB |
3324 | CORE_ADDR textaddr, unsigned int textsize, |
3325 | struct stab_section_list *stabsects, | |
3326 | file_ptr stabstroffset, unsigned int stabstrsize) | |
c906108c SS |
3327 | { |
3328 | int val; | |
3329 | bfd *sym_bfd = objfile->obfd; | |
3330 | char *name = bfd_get_filename (sym_bfd); | |
3331 | struct dbx_symfile_info *info; | |
3332 | unsigned int stabsize; | |
3333 | ||
3334 | /* There is already a dbx_symfile_info allocated by our caller. | |
3335 | It might even contain some info from the coff symtab to help us. */ | |
0a6ddd08 | 3336 | info = objfile->deprecated_sym_stab_info; |
c906108c SS |
3337 | |
3338 | DBX_TEXT_ADDR (objfile) = textaddr; | |
3339 | DBX_TEXT_SIZE (objfile) = textsize; | |
3340 | ||
3341 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3342 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; |
c906108c | 3343 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
c5aa993b | 3344 | |
c906108c | 3345 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3346 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3347 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3348 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3349 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3350 | |
3351 | /* Now read in the string table in one big gulp. */ | |
3352 | ||
3353 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3354 | if (val < 0) | |
3355 | perror_with_name (name); | |
3a42e9d0 | 3356 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3357 | if (val != stabstrsize) |
3358 | perror_with_name (name); | |
3359 | ||
3360 | stabsread_new_init (); | |
3361 | buildsym_new_init (); | |
3362 | free_header_files (); | |
3363 | init_header_files (); | |
3364 | ||
3365 | processing_acc_compilation = 1; | |
3366 | ||
3367 | /* In a coff file, we've already installed the minimal symbols that came | |
3368 | from the coff (non-stab) symbol table, so always act like an | |
3369 | incremental load here. */ | |
3370 | if (stabsects->next == NULL) | |
3371 | { | |
3372 | stabsize = bfd_section_size (sym_bfd, stabsects->section); | |
3373 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
3374 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3375 | } | |
3376 | else | |
3377 | { | |
3378 | struct stab_section_list *stabsect; | |
3379 | ||
3380 | DBX_SYMCOUNT (objfile) = 0; | |
3381 | for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next) | |
3382 | { | |
3383 | stabsize = bfd_section_size (sym_bfd, stabsect->section); | |
3384 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); | |
3385 | } | |
3386 | ||
3387 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3388 | ||
3389 | symbuf_sections = stabsects->next; | |
3390 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section); | |
3391 | symbuf_read = 0; | |
3392 | } | |
3393 | ||
96baa820 | 3394 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3395 | } |
3396 | \f | |
3397 | /* Scan and build partial symbols for an ELF symbol file. | |
fea25152 | 3398 | This ELF file has already been processed to get its minimal symbols. |
c906108c SS |
3399 | |
3400 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3401 | rolled into one. | |
3402 | ||
3403 | OBJFILE is the object file we are reading symbols from. | |
3404 | ADDR is the address relative to which the symbols are (e.g. | |
3405 | the base address of the text segment). | |
086df311 | 3406 | STABSECT is the BFD section information for the .stab section. |
c906108c SS |
3407 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
3408 | .stabstr section exists. | |
3409 | ||
3410 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
3411 | adjusted for elf details. */ | |
3412 | ||
3413 | void | |
c67a9c90 | 3414 | elfstab_build_psymtabs (struct objfile *objfile, asection *stabsect, |
fba45db2 | 3415 | file_ptr stabstroffset, unsigned int stabstrsize) |
c906108c SS |
3416 | { |
3417 | int val; | |
3418 | bfd *sym_bfd = objfile->obfd; | |
3419 | char *name = bfd_get_filename (sym_bfd); | |
3420 | struct dbx_symfile_info *info; | |
086df311 | 3421 | struct cleanup *back_to = NULL; |
c906108c SS |
3422 | |
3423 | /* There is already a dbx_symfile_info allocated by our caller. | |
3424 | It might even contain some info from the ELF symtab to help us. */ | |
0a6ddd08 | 3425 | info = objfile->deprecated_sym_stab_info; |
c906108c | 3426 | |
7a292a7a SS |
3427 | /* Find the first and last text address. dbx_symfile_read seems to |
3428 | want this. */ | |
3429 | find_text_range (sym_bfd, objfile); | |
c906108c SS |
3430 | |
3431 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3432 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; |
086df311 DJ |
3433 | DBX_SYMCOUNT (objfile) |
3434 | = bfd_section_size (objfile->obfd, stabsect) / DBX_SYMBOL_SIZE (objfile); | |
c906108c | 3435 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
086df311 DJ |
3436 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; |
3437 | DBX_STAB_SECTION (objfile) = stabsect; | |
c5aa993b | 3438 | |
c906108c | 3439 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3440 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3441 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3442 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3443 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3444 | |
3445 | /* Now read in the string table in one big gulp. */ | |
3446 | ||
3447 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3448 | if (val < 0) | |
3449 | perror_with_name (name); | |
3a42e9d0 | 3450 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3451 | if (val != stabstrsize) |
3452 | perror_with_name (name); | |
3453 | ||
3454 | stabsread_new_init (); | |
3455 | buildsym_new_init (); | |
3456 | free_header_files (); | |
3457 | init_header_files (); | |
c906108c SS |
3458 | |
3459 | processing_acc_compilation = 1; | |
3460 | ||
086df311 DJ |
3461 | symbuf_read = 0; |
3462 | symbuf_left = bfd_section_size (objfile->obfd, stabsect); | |
ac8035ab | 3463 | stabs_data = symfile_relocate_debug_section (objfile, stabsect, NULL); |
086df311 DJ |
3464 | if (stabs_data) |
3465 | back_to = make_cleanup (free_current_contents, (void *) &stabs_data); | |
3466 | ||
c906108c SS |
3467 | /* In an elf file, we've already installed the minimal symbols that came |
3468 | from the elf (non-stab) symbol table, so always act like an | |
7134143f DJ |
3469 | incremental load here. dbx_symfile_read should not generate any new |
3470 | minimal symbols, since we will have already read the ELF dynamic symbol | |
3471 | table and normal symbol entries won't be in the ".stab" section; but in | |
3472 | case it does, it will install them itself. */ | |
96baa820 | 3473 | dbx_symfile_read (objfile, 0); |
086df311 DJ |
3474 | |
3475 | if (back_to) | |
3476 | do_cleanups (back_to); | |
c906108c SS |
3477 | } |
3478 | \f | |
3479 | /* Scan and build partial symbols for a file with special sections for stabs | |
3480 | and stabstrings. The file has already been processed to get its minimal | |
3481 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
3482 | ||
3483 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3484 | rolled into one. | |
3485 | ||
3486 | OBJFILE is the object file we are reading symbols from. | |
3487 | ADDR is the address relative to which the symbols are (e.g. the base address | |
c5aa993b | 3488 | of the text segment). |
c906108c SS |
3489 | STAB_NAME is the name of the section that contains the stabs. |
3490 | STABSTR_NAME is the name of the section that contains the stab strings. | |
3491 | ||
3492 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read. */ | |
3493 | ||
3494 | void | |
c67a9c90 | 3495 | stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, |
fba45db2 | 3496 | char *stabstr_name, char *text_name) |
c906108c SS |
3497 | { |
3498 | int val; | |
3499 | bfd *sym_bfd = objfile->obfd; | |
3500 | char *name = bfd_get_filename (sym_bfd); | |
3501 | asection *stabsect; | |
3502 | asection *stabstrsect; | |
3503 | asection *text_sect; | |
3504 | ||
3505 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
3506 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
3507 | ||
3508 | if (!stabsect) | |
3509 | return; | |
3510 | ||
3511 | if (!stabstrsect) | |
063e58ba MD |
3512 | error (_("stabsect_build_psymtabs: Found stabs (%s), but not string \ |
3513 | section (%s)"), | |
c906108c SS |
3514 | stab_name, stabstr_name); |
3515 | ||
0a6ddd08 | 3516 | objfile->deprecated_sym_stab_info = (struct dbx_symfile_info *) |
c906108c | 3517 | xmalloc (sizeof (struct dbx_symfile_info)); |
063e58ba MD |
3518 | memset (objfile->deprecated_sym_stab_info, 0, |
3519 | sizeof (struct dbx_symfile_info)); | |
c906108c SS |
3520 | |
3521 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); | |
3522 | if (!text_sect) | |
8a3fe4f8 | 3523 | error (_("Can't find %s section in symbol file"), text_name); |
c906108c SS |
3524 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
3525 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
3526 | ||
c5aa993b JM |
3527 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); |
3528 | DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect) | |
c906108c SS |
3529 | / DBX_SYMBOL_SIZE (objfile); |
3530 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect); | |
c5aa993b JM |
3531 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING INSIDE BFD DATA STRUCTURES */ |
3532 | ||
c906108c | 3533 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) |
063e58ba MD |
3534 | error (_("ridiculous string table size: %d bytes"), |
3535 | DBX_STRINGTAB_SIZE (objfile)); | |
c906108c | 3536 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3537 | obstack_alloc (&objfile->objfile_obstack, DBX_STRINGTAB_SIZE (objfile) + 1); |
c906108c SS |
3538 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); |
3539 | ||
3540 | /* Now read in the string table in one big gulp. */ | |
3541 | ||
c5aa993b JM |
3542 | val = bfd_get_section_contents (sym_bfd, /* bfd */ |
3543 | stabstrsect, /* bfd section */ | |
063e58ba | 3544 | DBX_STRINGTAB (objfile), /* input buffer */ |
c5aa993b | 3545 | 0, /* offset into section */ |
063e58ba | 3546 | DBX_STRINGTAB_SIZE (objfile)); /* amount to read */ |
c906108c SS |
3547 | |
3548 | if (!val) | |
3549 | perror_with_name (name); | |
3550 | ||
3551 | stabsread_new_init (); | |
3552 | buildsym_new_init (); | |
3553 | free_header_files (); | |
3554 | init_header_files (); | |
c906108c SS |
3555 | |
3556 | /* Now, do an incremental load */ | |
3557 | ||
3558 | processing_acc_compilation = 1; | |
96baa820 | 3559 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3560 | } |
3561 | \f | |
3562 | static struct sym_fns aout_sym_fns = | |
3563 | { | |
3564 | bfd_target_aout_flavour, | |
063e58ba MD |
3565 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
3566 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
c5aa993b JM |
3567 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ |
3568 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
063e58ba MD |
3569 | default_symfile_offsets, /* sym_offsets: parse user's offsets to |
3570 | internal form */ | |
31d99776 DJ |
3571 | default_symfile_segments, /* sym_segments: Get segment information from |
3572 | a file. */ | |
c295b2e5 | 3573 | NULL, /* sym_read_linetable */ |
ac8035ab | 3574 | default_symfile_relocate, /* sym_relocate: Relocate a debug section. */ |
ccefe4c4 | 3575 | &psym_functions, |
c5aa993b | 3576 | NULL /* next: pointer to next struct sym_fns */ |
c906108c SS |
3577 | }; |
3578 | ||
3579 | void | |
fba45db2 | 3580 | _initialize_dbxread (void) |
c906108c | 3581 | { |
c5aa993b | 3582 | add_symtab_fns (&aout_sym_fns); |
c906108c | 3583 | } |