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Commit | Line | Data |
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c906108c | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
b6ba6518 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
25caa7a8 | 3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003. |
c906108c SS |
4 | Free Software Foundation, Inc. |
5 | ||
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | /* This module provides three functions: dbx_symfile_init, | |
24 | which initializes to read a symbol file; dbx_new_init, which | |
25 | discards existing cached information when all symbols are being | |
26 | discarded; and dbx_symfile_read, which reads a symbol table | |
27 | from a file. | |
28 | ||
29 | dbx_symfile_read only does the minimum work necessary for letting the | |
30 | user "name" things symbolically; it does not read the entire symtab. | |
31 | Instead, it reads the external and static symbols and puts them in partial | |
32 | symbol tables. When more extensive information is requested of a | |
33 | file, the corresponding partial symbol table is mutated into a full | |
34 | fledged symbol table by going back and reading the symbols | |
35 | for real. dbx_psymtab_to_symtab() is the function that does this */ | |
36 | ||
37 | #include "defs.h" | |
38 | #include "gdb_string.h" | |
39 | ||
40 | #if defined(USG) || defined(__CYGNUSCLIB__) | |
41 | #include <sys/types.h> | |
42 | #include <fcntl.h> | |
43 | #endif | |
44 | ||
04ea0df1 | 45 | #include "gdb_obstack.h" |
c906108c | 46 | #include "gdb_stat.h" |
c906108c SS |
47 | #include "symtab.h" |
48 | #include "breakpoint.h" | |
c906108c SS |
49 | #include "target.h" |
50 | #include "gdbcore.h" /* for bfd stuff */ | |
c5aa993b | 51 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
c906108c SS |
52 | #include "symfile.h" |
53 | #include "objfiles.h" | |
54 | #include "buildsym.h" | |
55 | #include "stabsread.h" | |
56 | #include "gdb-stabs.h" | |
57 | #include "demangle.h" | |
6a34fd2f | 58 | #include "language.h" /* Needed for local_hex_string */ |
c906108c | 59 | #include "complaints.h" |
015a42b4 | 60 | #include "cp-abi.h" |
7c8a5605 | 61 | #include "gdb_assert.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 | /* This macro returns the size field of a minimal symbol, which is normally |
68 | stored in the "info" field. The macro can be overridden for specific | |
69 | targets (e.g. MIPS16) that use the info field for other purposes. */ | |
70 | #ifndef MSYMBOL_SIZE | |
71 | #define MSYMBOL_SIZE(msym) ((long) MSYMBOL_INFO (msym)) | |
72 | #endif | |
73 | ||
74 | ||
75 | /* We put a pointer to this structure in the read_symtab_private field | |
76 | of the psymtab. */ | |
77 | ||
c5aa993b JM |
78 | struct symloc |
79 | { | |
c5aa993b JM |
80 | /* Offset within the file symbol table of first local symbol for this |
81 | file. */ | |
c906108c | 82 | |
c5aa993b | 83 | int ldsymoff; |
c906108c | 84 | |
c5aa993b JM |
85 | /* Length (in bytes) of the section of the symbol table devoted to |
86 | this file's symbols (actually, the section bracketed may contain | |
87 | more than just this file's symbols). If ldsymlen is 0, the only | |
88 | reason for this thing's existence is the dependency list. Nothing | |
89 | else will happen when it is read in. */ | |
c906108c | 90 | |
c5aa993b | 91 | int ldsymlen; |
c906108c | 92 | |
c5aa993b | 93 | /* The size of each symbol in the symbol file (in external form). */ |
c906108c | 94 | |
c5aa993b | 95 | int symbol_size; |
c906108c | 96 | |
c5aa993b JM |
97 | /* Further information needed to locate the symbols if they are in |
98 | an ELF file. */ | |
c906108c | 99 | |
c5aa993b JM |
100 | int symbol_offset; |
101 | int string_offset; | |
102 | int file_string_offset; | |
103 | }; | |
c906108c SS |
104 | |
105 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) | |
106 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
107 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) | |
108 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
109 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
110 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
111 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
c906108c | 112 | \f |
c5aa993b | 113 | |
c906108c SS |
114 | /* Remember what we deduced to be the source language of this psymtab. */ |
115 | ||
116 | static enum language psymtab_language = language_unknown; | |
117 | ||
c906108c SS |
118 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
119 | ||
120 | static bfd *symfile_bfd; | |
121 | ||
122 | /* The size of each symbol in the symbol file (in external form). | |
123 | This is set by dbx_symfile_read when building psymtabs, and by | |
124 | dbx_psymtab_to_symtab when building symtabs. */ | |
125 | ||
126 | static unsigned symbol_size; | |
127 | ||
128 | /* This is the offset of the symbol table in the executable file. */ | |
129 | ||
130 | static unsigned symbol_table_offset; | |
131 | ||
132 | /* This is the offset of the string table in the executable file. */ | |
133 | ||
134 | static unsigned string_table_offset; | |
135 | ||
136 | /* For elf+stab executables, the n_strx field is not a simple index | |
137 | into the string table. Instead, each .o file has a base offset in | |
138 | the string table, and the associated symbols contain offsets from | |
139 | this base. The following two variables contain the base offset for | |
140 | the current and next .o files. */ | |
141 | ||
142 | static unsigned int file_string_table_offset; | |
143 | static unsigned int next_file_string_table_offset; | |
144 | ||
145 | /* .o and NLM files contain unrelocated addresses which are based at | |
146 | 0. When non-zero, this flag disables some of the special cases for | |
147 | Solaris elf+stab text addresses at location 0. */ | |
148 | ||
149 | static int symfile_relocatable = 0; | |
150 | ||
151 | /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are | |
152 | relative to the function start address. */ | |
153 | ||
154 | static int block_address_function_relative = 0; | |
155 | \f | |
156 | /* The lowest text address we have yet encountered. This is needed | |
157 | because in an a.out file, there is no header field which tells us | |
158 | what address the program is actually going to be loaded at, so we | |
159 | need to make guesses based on the symbols (which *are* relocated to | |
160 | reflect the address it will be loaded at). */ | |
161 | ||
162 | static CORE_ADDR lowest_text_address; | |
163 | ||
164 | /* Non-zero if there is any line number info in the objfile. Prevents | |
165 | end_psymtab from discarding an otherwise empty psymtab. */ | |
166 | ||
167 | static int has_line_numbers; | |
168 | ||
169 | /* Complaints about the symbols we have encountered. */ | |
170 | ||
23136709 KB |
171 | static void |
172 | unknown_symtype_complaint (const char *arg1) | |
173 | { | |
174 | complaint (&symfile_complaints, "unknown symbol type %s", arg1); | |
175 | } | |
c906108c | 176 | |
23136709 KB |
177 | static void |
178 | lbrac_mismatch_complaint (int arg1) | |
179 | { | |
180 | complaint (&symfile_complaints, | |
181 | "N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", arg1); | |
182 | } | |
c906108c | 183 | |
23136709 KB |
184 | static void |
185 | repeated_header_complaint (const char *arg1, int arg2) | |
186 | { | |
187 | complaint (&symfile_complaints, | |
188 | "\"repeated\" header file %s not previously seen, at symtab pos %d", | |
189 | arg1, arg2); | |
190 | } | |
1f077a3e | 191 | |
7a292a7a SS |
192 | /* find_text_range --- find start and end of loadable code sections |
193 | ||
194 | The find_text_range function finds the shortest address range that | |
195 | encloses all sections containing executable code, and stores it in | |
196 | objfile's text_addr and text_size members. | |
197 | ||
198 | dbx_symfile_read will use this to finish off the partial symbol | |
199 | table, in some cases. */ | |
200 | ||
201 | static void | |
c5aa993b | 202 | find_text_range (bfd * sym_bfd, struct objfile *objfile) |
7a292a7a SS |
203 | { |
204 | asection *sec; | |
205 | int found_any = 0; | |
b9179dbc EZ |
206 | CORE_ADDR start = 0; |
207 | CORE_ADDR end = 0; | |
c5aa993b | 208 | |
7a292a7a SS |
209 | for (sec = sym_bfd->sections; sec; sec = sec->next) |
210 | if (bfd_get_section_flags (sym_bfd, sec) & SEC_CODE) | |
211 | { | |
212 | CORE_ADDR sec_start = bfd_section_vma (sym_bfd, sec); | |
213 | CORE_ADDR sec_end = sec_start + bfd_section_size (sym_bfd, sec); | |
214 | ||
215 | if (found_any) | |
216 | { | |
c5aa993b JM |
217 | if (sec_start < start) |
218 | start = sec_start; | |
219 | if (sec_end > end) | |
220 | end = sec_end; | |
7a292a7a SS |
221 | } |
222 | else | |
223 | { | |
224 | start = sec_start; | |
225 | end = sec_end; | |
226 | } | |
227 | ||
228 | found_any = 1; | |
229 | } | |
230 | ||
c5aa993b | 231 | if (!found_any) |
7a292a7a SS |
232 | error ("Can't find any code sections in symbol file"); |
233 | ||
234 | DBX_TEXT_ADDR (objfile) = start; | |
235 | DBX_TEXT_SIZE (objfile) = end - start; | |
236 | } | |
c5aa993b | 237 | \f |
7a292a7a SS |
238 | |
239 | ||
c906108c SS |
240 | /* During initial symbol readin, we need to have a structure to keep |
241 | track of which psymtabs have which bincls in them. This structure | |
242 | is used during readin to setup the list of dependencies within each | |
243 | partial symbol table. */ | |
244 | ||
245 | struct header_file_location | |
246 | { | |
247 | char *name; /* Name of header file */ | |
248 | int instance; /* See above */ | |
249 | struct partial_symtab *pst; /* Partial symtab that has the | |
250 | BINCL/EINCL defs for this file */ | |
251 | }; | |
252 | ||
253 | /* The actual list and controling variables */ | |
254 | static struct header_file_location *bincl_list, *next_bincl; | |
255 | static int bincls_allocated; | |
256 | ||
257 | /* Local function prototypes */ | |
258 | ||
a14ed312 | 259 | extern void _initialize_dbxread (void); |
392a587b | 260 | |
25caa7a8 EZ |
261 | #if 0 /* OBSOLETE CFront */ |
262 | // OBSOLETE static void process_now (struct objfile *); | |
263 | #endif /* OBSOLETE CFront */ | |
c906108c | 264 | |
a14ed312 | 265 | static void read_ofile_symtab (struct partial_symtab *); |
c906108c | 266 | |
a14ed312 | 267 | static void dbx_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 268 | |
a14ed312 | 269 | static void dbx_psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 270 | |
a14ed312 | 271 | static void read_dbx_dynamic_symtab (struct objfile *objfile); |
c906108c | 272 | |
a14ed312 | 273 | static void read_dbx_symtab (struct objfile *); |
c906108c | 274 | |
a14ed312 | 275 | static void free_bincl_list (struct objfile *); |
c906108c | 276 | |
a14ed312 | 277 | static struct partial_symtab *find_corresponding_bincl_psymtab (char *, int); |
c906108c | 278 | |
a14ed312 | 279 | static void add_bincl_to_list (struct partial_symtab *, char *, int); |
c906108c | 280 | |
a14ed312 | 281 | static void init_bincl_list (int, struct objfile *); |
c906108c | 282 | |
a14ed312 | 283 | static char *dbx_next_symbol_text (struct objfile *); |
c906108c | 284 | |
a14ed312 | 285 | static void fill_symbuf (bfd *); |
c906108c | 286 | |
a14ed312 | 287 | static void dbx_symfile_init (struct objfile *); |
c906108c | 288 | |
a14ed312 | 289 | static void dbx_new_init (struct objfile *); |
c906108c | 290 | |
a14ed312 | 291 | static void dbx_symfile_read (struct objfile *, int); |
c906108c | 292 | |
a14ed312 | 293 | static void dbx_symfile_finish (struct objfile *); |
c906108c | 294 | |
a14ed312 | 295 | static void record_minimal_symbol (char *, CORE_ADDR, int, struct objfile *); |
c906108c | 296 | |
a14ed312 | 297 | static void add_new_header_file (char *, int); |
c906108c | 298 | |
a14ed312 | 299 | static void add_old_header_file (char *, int); |
c906108c | 300 | |
a14ed312 | 301 | static void add_this_object_header_file (int); |
c906108c | 302 | |
a14ed312 KB |
303 | static struct partial_symtab *start_psymtab (struct objfile *, char *, |
304 | CORE_ADDR, int, | |
305 | struct partial_symbol **, | |
306 | struct partial_symbol **); | |
d4f3574e | 307 | |
c906108c SS |
308 | /* Free up old header file tables */ |
309 | ||
d3d55eeb | 310 | void |
fba45db2 | 311 | free_header_files (void) |
c906108c SS |
312 | { |
313 | if (this_object_header_files) | |
314 | { | |
b8c9b27d | 315 | xfree (this_object_header_files); |
c906108c SS |
316 | this_object_header_files = NULL; |
317 | } | |
318 | n_allocated_this_object_header_files = 0; | |
319 | } | |
320 | ||
321 | /* Allocate new header file tables */ | |
322 | ||
d3d55eeb | 323 | void |
fba45db2 | 324 | init_header_files (void) |
c906108c SS |
325 | { |
326 | n_allocated_this_object_header_files = 10; | |
327 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); | |
328 | } | |
329 | ||
330 | /* Add header file number I for this object file | |
331 | at the next successive FILENUM. */ | |
332 | ||
333 | static void | |
fba45db2 | 334 | add_this_object_header_file (int i) |
c906108c SS |
335 | { |
336 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
337 | { | |
338 | n_allocated_this_object_header_files *= 2; | |
339 | this_object_header_files | |
340 | = (int *) xrealloc ((char *) this_object_header_files, | |
c5aa993b | 341 | n_allocated_this_object_header_files * sizeof (int)); |
c906108c SS |
342 | } |
343 | ||
344 | this_object_header_files[n_this_object_header_files++] = i; | |
345 | } | |
346 | ||
347 | /* Add to this file an "old" header file, one already seen in | |
348 | a previous object file. NAME is the header file's name. | |
349 | INSTANCE is its instance code, to select among multiple | |
350 | symbol tables for the same header file. */ | |
351 | ||
352 | static void | |
fba45db2 | 353 | add_old_header_file (char *name, int instance) |
c906108c | 354 | { |
52f0bd74 AC |
355 | struct header_file *p = HEADER_FILES (current_objfile); |
356 | int i; | |
c906108c SS |
357 | |
358 | for (i = 0; i < N_HEADER_FILES (current_objfile); i++) | |
359 | if (STREQ (p[i].name, name) && instance == p[i].instance) | |
360 | { | |
361 | add_this_object_header_file (i); | |
362 | return; | |
363 | } | |
23136709 | 364 | repeated_header_complaint (name, symnum); |
c906108c SS |
365 | } |
366 | ||
367 | /* Add to this file a "new" header file: definitions for its types follow. | |
368 | NAME is the header file's name. | |
369 | Most often this happens only once for each distinct header file, | |
370 | but not necessarily. If it happens more than once, INSTANCE has | |
371 | a different value each time, and references to the header file | |
372 | use INSTANCE values to select among them. | |
373 | ||
374 | dbx output contains "begin" and "end" markers for each new header file, | |
375 | but at this level we just need to know which files there have been; | |
376 | so we record the file when its "begin" is seen and ignore the "end". */ | |
377 | ||
378 | static void | |
fba45db2 | 379 | add_new_header_file (char *name, int instance) |
c906108c | 380 | { |
52f0bd74 AC |
381 | int i; |
382 | struct header_file *hfile; | |
c906108c SS |
383 | |
384 | /* Make sure there is room for one more header file. */ | |
385 | ||
386 | i = N_ALLOCATED_HEADER_FILES (current_objfile); | |
387 | ||
388 | if (N_HEADER_FILES (current_objfile) == i) | |
389 | { | |
390 | if (i == 0) | |
391 | { | |
392 | N_ALLOCATED_HEADER_FILES (current_objfile) = 10; | |
393 | HEADER_FILES (current_objfile) = (struct header_file *) | |
394 | xmalloc (10 * sizeof (struct header_file)); | |
395 | } | |
396 | else | |
397 | { | |
398 | i *= 2; | |
399 | N_ALLOCATED_HEADER_FILES (current_objfile) = i; | |
400 | HEADER_FILES (current_objfile) = (struct header_file *) | |
401 | xrealloc ((char *) HEADER_FILES (current_objfile), | |
402 | (i * sizeof (struct header_file))); | |
403 | } | |
404 | } | |
405 | ||
406 | /* Create an entry for this header file. */ | |
407 | ||
408 | i = N_HEADER_FILES (current_objfile)++; | |
409 | hfile = HEADER_FILES (current_objfile) + i; | |
c5aa993b | 410 | hfile->name = savestring (name, strlen (name)); |
c906108c SS |
411 | hfile->instance = instance; |
412 | hfile->length = 10; | |
413 | hfile->vector | |
414 | = (struct type **) xmalloc (10 * sizeof (struct type *)); | |
415 | memset (hfile->vector, 0, 10 * sizeof (struct type *)); | |
416 | ||
417 | add_this_object_header_file (i); | |
418 | } | |
419 | ||
420 | #if 0 | |
421 | static struct type ** | |
fba45db2 | 422 | explicit_lookup_type (int real_filenum, int index) |
c906108c | 423 | { |
52f0bd74 | 424 | struct header_file *f = &HEADER_FILES (current_objfile)[real_filenum]; |
c906108c SS |
425 | |
426 | if (index >= f->length) | |
427 | { | |
428 | f->length *= 2; | |
429 | f->vector = (struct type **) | |
430 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
431 | memset (&f->vector[f->length / 2], | |
c5aa993b | 432 | '\0', f->length * sizeof (struct type *) / 2); |
c906108c SS |
433 | } |
434 | return &f->vector[index]; | |
435 | } | |
436 | #endif | |
437 | \f | |
438 | static void | |
fba45db2 KB |
439 | record_minimal_symbol (char *name, CORE_ADDR address, int type, |
440 | struct objfile *objfile) | |
c906108c SS |
441 | { |
442 | enum minimal_symbol_type ms_type; | |
443 | int section; | |
444 | asection *bfd_section; | |
445 | ||
446 | switch (type) | |
447 | { | |
448 | case N_TEXT | N_EXT: | |
449 | ms_type = mst_text; | |
b8fbeb18 | 450 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
451 | bfd_section = DBX_TEXT_SECTION (objfile); |
452 | break; | |
453 | case N_DATA | N_EXT: | |
454 | ms_type = mst_data; | |
b8fbeb18 | 455 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
456 | bfd_section = DBX_DATA_SECTION (objfile); |
457 | break; | |
458 | case N_BSS | N_EXT: | |
459 | ms_type = mst_bss; | |
b8fbeb18 | 460 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
461 | bfd_section = DBX_BSS_SECTION (objfile); |
462 | break; | |
463 | case N_ABS | N_EXT: | |
464 | ms_type = mst_abs; | |
465 | section = -1; | |
466 | bfd_section = NULL; | |
467 | break; | |
468 | #ifdef N_SETV | |
469 | case N_SETV | N_EXT: | |
470 | ms_type = mst_data; | |
b8fbeb18 | 471 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
472 | bfd_section = DBX_DATA_SECTION (objfile); |
473 | break; | |
474 | case N_SETV: | |
475 | /* I don't think this type actually exists; since a N_SETV is the result | |
c5aa993b JM |
476 | of going over many .o files, it doesn't make sense to have one |
477 | file local. */ | |
c906108c | 478 | ms_type = mst_file_data; |
b8fbeb18 | 479 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
480 | bfd_section = DBX_DATA_SECTION (objfile); |
481 | break; | |
482 | #endif | |
483 | case N_TEXT: | |
484 | case N_NBTEXT: | |
485 | case N_FN: | |
486 | case N_FN_SEQ: | |
487 | ms_type = mst_file_text; | |
b8fbeb18 | 488 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
489 | bfd_section = DBX_TEXT_SECTION (objfile); |
490 | break; | |
491 | case N_DATA: | |
492 | ms_type = mst_file_data; | |
493 | ||
494 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
c5aa993b JM |
495 | Record it as global even if it's local, not global, so |
496 | lookup_minimal_symbol can find it. We don't check symbol_leading_char | |
497 | because for SunOS4 it always is '_'. */ | |
c906108c SS |
498 | if (name[8] == 'C' && STREQ ("__DYNAMIC", name)) |
499 | ms_type = mst_data; | |
500 | ||
501 | /* Same with virtual function tables, both global and static. */ | |
502 | { | |
503 | char *tempstring = name; | |
504 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) | |
505 | ++tempstring; | |
015a42b4 | 506 | if (is_vtable_name (tempstring)) |
c906108c SS |
507 | ms_type = mst_data; |
508 | } | |
b8fbeb18 | 509 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
510 | bfd_section = DBX_DATA_SECTION (objfile); |
511 | break; | |
512 | case N_BSS: | |
513 | ms_type = mst_file_bss; | |
b8fbeb18 | 514 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
515 | bfd_section = DBX_BSS_SECTION (objfile); |
516 | break; | |
517 | default: | |
518 | ms_type = mst_unknown; | |
519 | section = -1; | |
520 | bfd_section = NULL; | |
521 | break; | |
c5aa993b | 522 | } |
c906108c SS |
523 | |
524 | if ((ms_type == mst_file_text || ms_type == mst_text) | |
525 | && address < lowest_text_address) | |
526 | lowest_text_address = address; | |
527 | ||
528 | prim_record_minimal_symbol_and_info | |
529 | (name, address, ms_type, NULL, section, bfd_section, objfile); | |
530 | } | |
531 | \f | |
532 | /* Scan and build partial symbols for a symbol file. | |
533 | We have been initialized by a call to dbx_symfile_init, which | |
534 | put all the relevant info into a "struct dbx_symfile_info", | |
535 | hung off the objfile structure. | |
536 | ||
c906108c SS |
537 | MAINLINE is true if we are reading the main symbol |
538 | table (as opposed to a shared lib or dynamically loaded file). */ | |
539 | ||
540 | static void | |
9df3df99 | 541 | dbx_symfile_read (struct objfile *objfile, int mainline) |
c906108c SS |
542 | { |
543 | bfd *sym_bfd; | |
544 | int val; | |
545 | struct cleanup *back_to; | |
546 | ||
c906108c SS |
547 | sym_bfd = objfile->obfd; |
548 | ||
549 | /* .o and .nlm files are relocatables with text, data and bss segs based at | |
550 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for | |
551 | symbols with a value of 0. */ | |
552 | ||
553 | symfile_relocatable = bfd_get_file_flags (sym_bfd) & HAS_RELOC; | |
554 | ||
555 | /* This is true for Solaris (and all other systems which put stabs | |
556 | in sections, hopefully, since it would be silly to do things | |
557 | differently from Solaris), and false for SunOS4 and other a.out | |
558 | file formats. */ | |
559 | block_address_function_relative = | |
560 | ((0 == strncmp (bfd_get_target (sym_bfd), "elf", 3)) | |
561 | || (0 == strncmp (bfd_get_target (sym_bfd), "som", 3)) | |
562 | || (0 == strncmp (bfd_get_target (sym_bfd), "coff", 4)) | |
563 | || (0 == strncmp (bfd_get_target (sym_bfd), "pe", 2)) | |
c2d11a7d | 564 | || (0 == strncmp (bfd_get_target (sym_bfd), "epoc-pe", 7)) |
c906108c SS |
565 | || (0 == strncmp (bfd_get_target (sym_bfd), "nlm", 3))); |
566 | ||
567 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); | |
568 | if (val < 0) | |
569 | perror_with_name (objfile->name); | |
570 | ||
571 | /* If we are reinitializing, or if we have never loaded syms yet, init */ | |
572 | if (mainline | |
ef96bde8 EZ |
573 | || (objfile->global_psymbols.size == 0 |
574 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
575 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); |
576 | ||
577 | symbol_size = DBX_SYMBOL_SIZE (objfile); | |
578 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
579 | ||
580 | free_pending_blocks (); | |
a0b3c4fd | 581 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c SS |
582 | |
583 | init_minimal_symbol_collection (); | |
56e290f4 | 584 | make_cleanup_discard_minimal_symbols (); |
c906108c | 585 | |
d4f3574e | 586 | /* Read stabs data from executable file and define symbols. */ |
c906108c | 587 | |
d4f3574e | 588 | read_dbx_symtab (objfile); |
c906108c SS |
589 | |
590 | /* Add the dynamic symbols. */ | |
591 | ||
96baa820 | 592 | read_dbx_dynamic_symtab (objfile); |
c906108c SS |
593 | |
594 | /* Install any minimal symbols that have been collected as the current | |
595 | minimal symbols for this objfile. */ | |
596 | ||
597 | install_minimal_symbols (objfile); | |
598 | ||
599 | do_cleanups (back_to); | |
600 | } | |
601 | ||
602 | /* Initialize anything that needs initializing when a completely new | |
603 | symbol file is specified (not just adding some symbols from another | |
604 | file, e.g. a shared library). */ | |
605 | ||
606 | static void | |
fba45db2 | 607 | dbx_new_init (struct objfile *ignore) |
c906108c SS |
608 | { |
609 | stabsread_new_init (); | |
610 | buildsym_new_init (); | |
611 | init_header_files (); | |
612 | } | |
613 | ||
614 | ||
615 | /* dbx_symfile_init () | |
616 | is the dbx-specific initialization routine for reading symbols. | |
617 | It is passed a struct objfile which contains, among other things, | |
618 | the BFD for the file whose symbols are being read, and a slot for a pointer | |
619 | to "private data" which we fill with goodies. | |
620 | ||
621 | We read the string table into malloc'd space and stash a pointer to it. | |
622 | ||
623 | Since BFD doesn't know how to read debug symbols in a format-independent | |
624 | way (and may never do so...), we have to do it ourselves. We will never | |
625 | be called unless this is an a.out (or very similar) file. | |
626 | FIXME, there should be a cleaner peephole into the BFD environment here. */ | |
627 | ||
c5aa993b | 628 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
c906108c SS |
629 | |
630 | static void | |
fba45db2 | 631 | dbx_symfile_init (struct objfile *objfile) |
c906108c SS |
632 | { |
633 | int val; | |
634 | bfd *sym_bfd = objfile->obfd; | |
635 | char *name = bfd_get_filename (sym_bfd); | |
636 | asection *text_sect; | |
637 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; | |
638 | ||
639 | /* Allocate struct to keep track of the symfile */ | |
640 | objfile->sym_stab_info = (struct dbx_symfile_info *) | |
c5aa993b | 641 | xmmalloc (objfile->md, sizeof (struct dbx_symfile_info)); |
4efb68b1 | 642 | memset (objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); |
c906108c SS |
643 | |
644 | DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
645 | DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data"); | |
646 | DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss"); | |
647 | ||
648 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
649 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) | |
650 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
651 | ||
652 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ | |
653 | ||
654 | DBX_SYMFILE_INFO (objfile)->stab_section_info = NULL; | |
c5aa993b | 655 | |
c906108c SS |
656 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
657 | if (!text_sect) | |
658 | error ("Can't find .text section in symbol file"); | |
659 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); | |
660 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
661 | ||
662 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); | |
663 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); | |
664 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; | |
665 | ||
666 | /* Read the string table and stash it away in the psymbol_obstack. It is | |
667 | only needed as long as we need to expand psymbols into full symbols, | |
668 | so when we blow away the psymbol the string table goes away as well. | |
669 | Note that gdb used to use the results of attempting to malloc the | |
670 | string table, based on the size it read, as a form of sanity check | |
671 | for botched byte swapping, on the theory that a byte swapped string | |
672 | table size would be so totally bogus that the malloc would fail. Now | |
673 | that we put in on the psymbol_obstack, we can't do this since gdb gets | |
674 | a fatal error (out of virtual memory) if the size is bogus. We can | |
675 | however at least check to see if the size is less than the size of | |
676 | the size field itself, or larger than the size of the entire file. | |
677 | Note that all valid string tables have a size greater than zero, since | |
678 | the bytes used to hold the size are included in the count. */ | |
679 | ||
680 | if (STRING_TABLE_OFFSET == 0) | |
681 | { | |
682 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET | |
c5aa993b JM |
683 | will never be zero, even when there is no string table. This |
684 | would appear to be a bug in bfd. */ | |
c906108c SS |
685 | DBX_STRINGTAB_SIZE (objfile) = 0; |
686 | DBX_STRINGTAB (objfile) = NULL; | |
687 | } | |
688 | else | |
689 | { | |
690 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); | |
691 | if (val < 0) | |
692 | perror_with_name (name); | |
c5aa993b | 693 | |
4efb68b1 AC |
694 | memset (size_temp, 0, sizeof (size_temp)); |
695 | val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd); | |
c906108c SS |
696 | if (val < 0) |
697 | { | |
698 | perror_with_name (name); | |
699 | } | |
700 | else if (val == 0) | |
701 | { | |
702 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
703 | EOF if there is no string table, and attempting to read the size | |
704 | from EOF will read zero bytes. */ | |
705 | DBX_STRINGTAB_SIZE (objfile) = 0; | |
706 | DBX_STRINGTAB (objfile) = NULL; | |
707 | } | |
708 | else | |
709 | { | |
710 | /* Read some data that would appear to be the string table size. | |
711 | If there really is a string table, then it is probably the right | |
712 | size. Byteswap if necessary and validate the size. Note that | |
713 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
714 | random data that happened to be at STRING_TABLE_OFFSET, because | |
715 | bfd can't tell us there is no string table, the sanity checks may | |
716 | or may not catch this. */ | |
717 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); | |
c5aa993b | 718 | |
c906108c SS |
719 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) |
720 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
721 | error ("ridiculous string table size (%d bytes).", | |
722 | DBX_STRINGTAB_SIZE (objfile)); | |
c5aa993b | 723 | |
c906108c | 724 | DBX_STRINGTAB (objfile) = |
c5aa993b | 725 | (char *) obstack_alloc (&objfile->psymbol_obstack, |
c906108c SS |
726 | DBX_STRINGTAB_SIZE (objfile)); |
727 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); | |
c5aa993b | 728 | |
c906108c | 729 | /* Now read in the string table in one big gulp. */ |
c5aa993b | 730 | |
c906108c SS |
731 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
732 | if (val < 0) | |
733 | perror_with_name (name); | |
3a42e9d0 AM |
734 | val = bfd_bread (DBX_STRINGTAB (objfile), |
735 | DBX_STRINGTAB_SIZE (objfile), | |
736 | sym_bfd); | |
c906108c SS |
737 | if (val != DBX_STRINGTAB_SIZE (objfile)) |
738 | perror_with_name (name); | |
739 | } | |
740 | } | |
741 | } | |
742 | ||
743 | /* Perform any local cleanups required when we are done with a particular | |
744 | objfile. I.E, we are in the process of discarding all symbol information | |
745 | for an objfile, freeing up all memory held for it, and unlinking the | |
746 | objfile struct from the global list of known objfiles. */ | |
747 | ||
748 | static void | |
fba45db2 | 749 | dbx_symfile_finish (struct objfile *objfile) |
c906108c SS |
750 | { |
751 | if (objfile->sym_stab_info != NULL) | |
752 | { | |
753 | if (HEADER_FILES (objfile) != NULL) | |
754 | { | |
755 | register int i = N_HEADER_FILES (objfile); | |
756 | register struct header_file *hfiles = HEADER_FILES (objfile); | |
757 | ||
758 | while (--i >= 0) | |
759 | { | |
b8c9b27d KB |
760 | xfree (hfiles[i].name); |
761 | xfree (hfiles[i].vector); | |
c906108c | 762 | } |
b8c9b27d | 763 | xfree (hfiles); |
c906108c | 764 | } |
aac7f4ea | 765 | xmfree (objfile->md, objfile->sym_stab_info); |
c906108c SS |
766 | } |
767 | free_header_files (); | |
768 | } | |
c906108c | 769 | \f |
c5aa993b | 770 | |
c906108c SS |
771 | /* Buffer for reading the symbol table entries. */ |
772 | static struct external_nlist symbuf[4096]; | |
773 | static int symbuf_idx; | |
774 | static int symbuf_end; | |
775 | ||
25caa7a8 EZ |
776 | #if 0 /* OBSOLETE CFront */ |
777 | // OBSOLETE /* cont_elem is used for continuing information in cfront. | |
778 | // OBSOLETE It saves information about which types need to be fixed up and | |
779 | // OBSOLETE completed after all the stabs are read. */ | |
780 | // OBSOLETE struct cont_elem | |
781 | // OBSOLETE { | |
782 | // OBSOLETE /* sym and stabstring for continuing information in cfront */ | |
783 | // OBSOLETE struct symbol *sym; | |
784 | // OBSOLETE char *stabs; | |
785 | // OBSOLETE /* state dependencies (statics that must be preserved) */ | |
786 | // OBSOLETE int sym_idx; | |
787 | // OBSOLETE int sym_end; | |
788 | // OBSOLETE int symnum; | |
789 | // OBSOLETE int (*func) (struct objfile *, struct symbol *, char *); | |
790 | // OBSOLETE /* other state dependencies include: | |
791 | // OBSOLETE (assumption is that these will not change since process_now FIXME!!) | |
792 | // OBSOLETE stringtab_global | |
793 | // OBSOLETE n_stabs | |
794 | // OBSOLETE objfile | |
795 | // OBSOLETE symfile_bfd */ | |
796 | // OBSOLETE }; | |
797 | ||
798 | // OBSOLETE static struct cont_elem *cont_list = 0; | |
799 | // OBSOLETE static int cont_limit = 0; | |
800 | // OBSOLETE static int cont_count = 0; | |
801 | ||
802 | // OBSOLETE /* Arrange for function F to be called with arguments SYM and P later | |
803 | // OBSOLETE in the stabs reading process. */ | |
804 | // OBSOLETE void | |
805 | // OBSOLETE process_later (struct symbol *sym, char *p, | |
806 | // OBSOLETE int (*f) (struct objfile *, struct symbol *, char *)) | |
807 | // OBSOLETE { | |
808 | ||
809 | // OBSOLETE /* Allocate more space for the deferred list. */ | |
810 | // OBSOLETE if (cont_count >= cont_limit - 1) | |
811 | // OBSOLETE { | |
812 | // OBSOLETE cont_limit += 32; /* chunk size */ | |
813 | ||
814 | // OBSOLETE cont_list | |
815 | // OBSOLETE = (struct cont_elem *) xrealloc (cont_list, | |
816 | // OBSOLETE (cont_limit | |
817 | // OBSOLETE * sizeof (struct cont_elem))); | |
818 | // OBSOLETE if (!cont_list) | |
819 | // OBSOLETE error ("Virtual memory exhausted\n"); | |
820 | // OBSOLETE } | |
821 | ||
822 | // OBSOLETE /* Save state variables so we can process these stabs later. */ | |
823 | // OBSOLETE cont_list[cont_count].sym_idx = symbuf_idx; | |
824 | // OBSOLETE cont_list[cont_count].sym_end = symbuf_end; | |
825 | // OBSOLETE cont_list[cont_count].symnum = symnum; | |
826 | // OBSOLETE cont_list[cont_count].sym = sym; | |
827 | // OBSOLETE cont_list[cont_count].stabs = p; | |
828 | // OBSOLETE cont_list[cont_count].func = f; | |
829 | // OBSOLETE cont_count++; | |
830 | // OBSOLETE } | |
831 | ||
832 | // OBSOLETE /* Call deferred funtions in CONT_LIST. */ | |
833 | ||
834 | // OBSOLETE static void | |
835 | // OBSOLETE process_now (struct objfile *objfile) | |
836 | // OBSOLETE { | |
837 | // OBSOLETE int i; | |
838 | // OBSOLETE int save_symbuf_idx; | |
839 | // OBSOLETE int save_symbuf_end; | |
840 | // OBSOLETE int save_symnum; | |
841 | // OBSOLETE struct symbol *sym; | |
842 | // OBSOLETE char *stabs; | |
843 | // OBSOLETE int err; | |
844 | // OBSOLETE int (*func) (struct objfile *, struct symbol *, char *); | |
845 | ||
846 | // OBSOLETE /* Save the state of our caller, we'll want to restore it before | |
847 | // OBSOLETE returning. */ | |
848 | // OBSOLETE save_symbuf_idx = symbuf_idx; | |
849 | // OBSOLETE save_symbuf_end = symbuf_end; | |
850 | // OBSOLETE save_symnum = symnum; | |
851 | ||
852 | // OBSOLETE /* Iterate over all the deferred stabs. */ | |
853 | // OBSOLETE for (i = 0; i < cont_count; i++) | |
854 | // OBSOLETE { | |
855 | // OBSOLETE /* Restore the state for this deferred stab. */ | |
856 | // OBSOLETE symbuf_idx = cont_list[i].sym_idx; | |
857 | // OBSOLETE symbuf_end = cont_list[i].sym_end; | |
858 | // OBSOLETE symnum = cont_list[i].symnum; | |
859 | // OBSOLETE sym = cont_list[i].sym; | |
860 | // OBSOLETE stabs = cont_list[i].stabs; | |
861 | // OBSOLETE func = cont_list[i].func; | |
862 | ||
863 | // OBSOLETE /* Call the function to handle this deferrd stab. */ | |
864 | // OBSOLETE err = (*func) (objfile, sym, stabs); | |
865 | // OBSOLETE if (err) | |
866 | // OBSOLETE error ("Internal error: unable to resolve stab.\n"); | |
867 | // OBSOLETE } | |
868 | ||
869 | // OBSOLETE /* Restore our caller's state. */ | |
870 | // OBSOLETE symbuf_idx = save_symbuf_idx; | |
871 | // OBSOLETE symbuf_end = save_symbuf_end; | |
872 | // OBSOLETE symnum = save_symnum; | |
873 | // OBSOLETE cont_count = 0; | |
874 | // OBSOLETE } | |
875 | #endif /* OBSOLETE CFront */ | |
c906108c SS |
876 | |
877 | /* Name of last function encountered. Used in Solaris to approximate | |
878 | object file boundaries. */ | |
879 | static char *last_function_name; | |
880 | ||
881 | /* The address in memory of the string table of the object file we are | |
882 | reading (which might not be the "main" object file, but might be a | |
883 | shared library or some other dynamically loaded thing). This is | |
884 | set by read_dbx_symtab when building psymtabs, and by | |
885 | read_ofile_symtab when building symtabs, and is used only by | |
886 | next_symbol_text. FIXME: If that is true, we don't need it when | |
887 | building psymtabs, right? */ | |
888 | static char *stringtab_global; | |
889 | ||
890 | /* These variables are used to control fill_symbuf when the stabs | |
891 | symbols are not contiguous (as may be the case when a COFF file is | |
892 | linked using --split-by-reloc). */ | |
893 | static struct stab_section_list *symbuf_sections; | |
894 | static unsigned int symbuf_left; | |
895 | static unsigned int symbuf_read; | |
896 | ||
086df311 DJ |
897 | /* This variable stores a global stabs buffer, if we read stabs into |
898 | memory in one chunk in order to process relocations. */ | |
899 | static bfd_byte *stabs_data; | |
900 | ||
c906108c SS |
901 | /* Refill the symbol table input buffer |
902 | and set the variables that control fetching entries from it. | |
903 | Reports an error if no data available. | |
904 | This function can read past the end of the symbol table | |
905 | (into the string table) but this does no harm. */ | |
906 | ||
907 | static void | |
fba45db2 | 908 | fill_symbuf (bfd *sym_bfd) |
c906108c SS |
909 | { |
910 | unsigned int count; | |
911 | int nbytes; | |
912 | ||
086df311 DJ |
913 | if (stabs_data) |
914 | { | |
915 | nbytes = sizeof (symbuf); | |
916 | if (nbytes > symbuf_left) | |
917 | nbytes = symbuf_left; | |
918 | memcpy (symbuf, stabs_data + symbuf_read, nbytes); | |
919 | } | |
920 | else if (symbuf_sections == NULL) | |
921 | { | |
922 | count = sizeof (symbuf); | |
923 | nbytes = bfd_bread (symbuf, count, sym_bfd); | |
924 | } | |
c906108c SS |
925 | else |
926 | { | |
927 | if (symbuf_left <= 0) | |
928 | { | |
929 | file_ptr filepos = symbuf_sections->section->filepos; | |
930 | if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0) | |
931 | perror_with_name (bfd_get_filename (sym_bfd)); | |
932 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section); | |
933 | symbol_table_offset = filepos - symbuf_read; | |
934 | symbuf_sections = symbuf_sections->next; | |
935 | } | |
936 | ||
937 | count = symbuf_left; | |
938 | if (count > sizeof (symbuf)) | |
939 | count = sizeof (symbuf); | |
086df311 | 940 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
c906108c SS |
941 | } |
942 | ||
c906108c SS |
943 | if (nbytes < 0) |
944 | perror_with_name (bfd_get_filename (sym_bfd)); | |
945 | else if (nbytes == 0) | |
946 | error ("Premature end of file reading symbol table"); | |
947 | symbuf_end = nbytes / symbol_size; | |
948 | symbuf_idx = 0; | |
949 | symbuf_left -= nbytes; | |
950 | symbuf_read += nbytes; | |
951 | } | |
952 | ||
086df311 DJ |
953 | static void |
954 | stabs_seek (int sym_offset) | |
955 | { | |
956 | if (stabs_data) | |
957 | { | |
958 | symbuf_read += sym_offset; | |
959 | symbuf_left -= sym_offset; | |
960 | } | |
961 | else | |
962 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); | |
963 | } | |
964 | ||
c906108c SS |
965 | #define INTERNALIZE_SYMBOL(intern, extern, abfd) \ |
966 | { \ | |
967 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \ | |
968 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \ | |
969 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \ | |
40b3352b L |
970 | if (bfd_get_sign_extend_vma (abfd)) \ |
971 | (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \ | |
972 | else \ | |
973 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \ | |
c906108c SS |
974 | } |
975 | ||
976 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
977 | that hasn't been swapped. Swap the symbol at the same time | |
978 | that symbuf_idx is incremented. */ | |
979 | ||
980 | /* dbx allows the text of a symbol name to be continued into the | |
981 | next symbol name! When such a continuation is encountered | |
982 | (a \ at the end of the text of a name) | |
983 | call this function to get the continuation. */ | |
984 | ||
985 | static char * | |
fba45db2 | 986 | dbx_next_symbol_text (struct objfile *objfile) |
c906108c SS |
987 | { |
988 | struct internal_nlist nlist; | |
989 | ||
990 | if (symbuf_idx == symbuf_end) | |
991 | fill_symbuf (symfile_bfd); | |
992 | ||
993 | symnum++; | |
c5aa993b | 994 | INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], symfile_bfd); |
c906108c SS |
995 | OBJSTAT (objfile, n_stabs++); |
996 | ||
997 | symbuf_idx++; | |
998 | ||
999 | return nlist.n_strx + stringtab_global + file_string_table_offset; | |
1000 | } | |
1001 | \f | |
1002 | /* Initialize the list of bincls to contain none and have some | |
1003 | allocated. */ | |
1004 | ||
1005 | static void | |
fba45db2 | 1006 | init_bincl_list (int number, struct objfile *objfile) |
c906108c SS |
1007 | { |
1008 | bincls_allocated = number; | |
1009 | next_bincl = bincl_list = (struct header_file_location *) | |
c5aa993b | 1010 | xmmalloc (objfile->md, bincls_allocated * sizeof (struct header_file_location)); |
c906108c SS |
1011 | } |
1012 | ||
1013 | /* Add a bincl to the list. */ | |
1014 | ||
1015 | static void | |
fba45db2 | 1016 | add_bincl_to_list (struct partial_symtab *pst, char *name, int instance) |
c906108c SS |
1017 | { |
1018 | if (next_bincl >= bincl_list + bincls_allocated) | |
1019 | { | |
1020 | int offset = next_bincl - bincl_list; | |
1021 | bincls_allocated *= 2; | |
1022 | bincl_list = (struct header_file_location *) | |
c5aa993b JM |
1023 | xmrealloc (pst->objfile->md, (char *) bincl_list, |
1024 | bincls_allocated * sizeof (struct header_file_location)); | |
c906108c SS |
1025 | next_bincl = bincl_list + offset; |
1026 | } | |
1027 | next_bincl->pst = pst; | |
1028 | next_bincl->instance = instance; | |
1029 | next_bincl++->name = name; | |
1030 | } | |
1031 | ||
1032 | /* Given a name, value pair, find the corresponding | |
1033 | bincl in the list. Return the partial symtab associated | |
1034 | with that header_file_location. */ | |
1035 | ||
1036 | static struct partial_symtab * | |
fba45db2 | 1037 | find_corresponding_bincl_psymtab (char *name, int instance) |
c906108c SS |
1038 | { |
1039 | struct header_file_location *bincl; | |
1040 | ||
1041 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
1042 | if (bincl->instance == instance | |
1043 | && STREQ (name, bincl->name)) | |
1044 | return bincl->pst; | |
1045 | ||
23136709 | 1046 | repeated_header_complaint (name, symnum); |
c906108c SS |
1047 | return (struct partial_symtab *) 0; |
1048 | } | |
1049 | ||
1050 | /* Free the storage allocated for the bincl list. */ | |
1051 | ||
1052 | static void | |
fba45db2 | 1053 | free_bincl_list (struct objfile *objfile) |
c906108c | 1054 | { |
4efb68b1 | 1055 | xmfree (objfile->md, bincl_list); |
c906108c SS |
1056 | bincls_allocated = 0; |
1057 | } | |
1058 | ||
74b7792f AC |
1059 | static void |
1060 | do_free_bincl_list_cleanup (void *objfile) | |
1061 | { | |
1062 | free_bincl_list (objfile); | |
1063 | } | |
1064 | ||
1065 | static struct cleanup * | |
1066 | make_cleanup_free_bincl_list (struct objfile *objfile) | |
1067 | { | |
1068 | return make_cleanup (do_free_bincl_list_cleanup, objfile); | |
1069 | } | |
1070 | ||
6a34fd2f EZ |
1071 | /* Set namestring based on nlist. If the string table index is invalid, |
1072 | give a fake name, and print a single error message per symbol file read, | |
1073 | rather than abort the symbol reading or flood the user with messages. */ | |
1074 | ||
1075 | static char * | |
1076 | set_namestring (struct objfile *objfile, struct internal_nlist nlist) | |
1077 | { | |
1078 | char *namestring; | |
1079 | ||
1080 | if (((unsigned) nlist.n_strx + file_string_table_offset) >= | |
1081 | DBX_STRINGTAB_SIZE (objfile)) | |
1082 | { | |
23136709 KB |
1083 | complaint (&symfile_complaints, "bad string table offset in symbol %d", |
1084 | symnum); | |
6a34fd2f EZ |
1085 | namestring = "<bad string table offset>"; |
1086 | } | |
1087 | else | |
1088 | namestring = nlist.n_strx + file_string_table_offset + | |
1089 | DBX_STRINGTAB (objfile); | |
1090 | return namestring; | |
1091 | } | |
1092 | ||
c906108c SS |
1093 | /* Scan a SunOs dynamic symbol table for symbols of interest and |
1094 | add them to the minimal symbol table. */ | |
1095 | ||
1096 | static void | |
fba45db2 | 1097 | read_dbx_dynamic_symtab (struct objfile *objfile) |
c906108c SS |
1098 | { |
1099 | bfd *abfd = objfile->obfd; | |
1100 | struct cleanup *back_to; | |
1101 | int counter; | |
1102 | long dynsym_size; | |
1103 | long dynsym_count; | |
1104 | asymbol **dynsyms; | |
1105 | asymbol **symptr; | |
1106 | arelent **relptr; | |
1107 | long dynrel_size; | |
1108 | long dynrel_count; | |
1109 | arelent **dynrels; | |
1110 | CORE_ADDR sym_value; | |
1111 | char *name; | |
1112 | ||
1113 | /* Check that the symbol file has dynamic symbols that we know about. | |
1114 | bfd_arch_unknown can happen if we are reading a sun3 symbol file | |
1115 | on a sun4 host (and vice versa) and bfd is not configured | |
1116 | --with-target=all. This would trigger an assertion in bfd/sunos.c, | |
1117 | so we ignore the dynamic symbols in this case. */ | |
1118 | if (bfd_get_flavour (abfd) != bfd_target_aout_flavour | |
1119 | || (bfd_get_file_flags (abfd) & DYNAMIC) == 0 | |
1120 | || bfd_get_arch (abfd) == bfd_arch_unknown) | |
1121 | return; | |
1122 | ||
1123 | dynsym_size = bfd_get_dynamic_symtab_upper_bound (abfd); | |
1124 | if (dynsym_size < 0) | |
1125 | return; | |
1126 | ||
1127 | dynsyms = (asymbol **) xmalloc (dynsym_size); | |
b8c9b27d | 1128 | back_to = make_cleanup (xfree, dynsyms); |
c906108c SS |
1129 | |
1130 | dynsym_count = bfd_canonicalize_dynamic_symtab (abfd, dynsyms); | |
1131 | if (dynsym_count < 0) | |
1132 | { | |
1133 | do_cleanups (back_to); | |
1134 | return; | |
1135 | } | |
1136 | ||
1137 | /* Enter dynamic symbols into the minimal symbol table | |
1138 | if this is a stripped executable. */ | |
1139 | if (bfd_get_symcount (abfd) <= 0) | |
1140 | { | |
1141 | symptr = dynsyms; | |
1142 | for (counter = 0; counter < dynsym_count; counter++, symptr++) | |
1143 | { | |
1144 | asymbol *sym = *symptr; | |
1145 | asection *sec; | |
1146 | int type; | |
1147 | ||
1148 | sec = bfd_get_section (sym); | |
1149 | ||
1150 | /* BFD symbols are section relative. */ | |
1151 | sym_value = sym->value + sec->vma; | |
1152 | ||
1153 | if (bfd_get_section_flags (abfd, sec) & SEC_CODE) | |
1154 | { | |
b8fbeb18 | 1155 | sym_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1156 | type = N_TEXT; |
1157 | } | |
1158 | else if (bfd_get_section_flags (abfd, sec) & SEC_DATA) | |
1159 | { | |
b8fbeb18 | 1160 | sym_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
1161 | type = N_DATA; |
1162 | } | |
1163 | else if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) | |
1164 | { | |
b8fbeb18 | 1165 | sym_value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
1166 | type = N_BSS; |
1167 | } | |
1168 | else | |
1169 | continue; | |
1170 | ||
1171 | if (sym->flags & BSF_GLOBAL) | |
1172 | type |= N_EXT; | |
1173 | ||
1174 | record_minimal_symbol ((char *) bfd_asymbol_name (sym), sym_value, | |
1175 | type, objfile); | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | /* Symbols from shared libraries have a dynamic relocation entry | |
1180 | that points to the associated slot in the procedure linkage table. | |
1181 | We make a mininal symbol table entry with type mst_solib_trampoline | |
1182 | at the address in the procedure linkage table. */ | |
1183 | dynrel_size = bfd_get_dynamic_reloc_upper_bound (abfd); | |
1184 | if (dynrel_size < 0) | |
1185 | { | |
1186 | do_cleanups (back_to); | |
1187 | return; | |
1188 | } | |
c5aa993b | 1189 | |
c906108c | 1190 | dynrels = (arelent **) xmalloc (dynrel_size); |
b8c9b27d | 1191 | make_cleanup (xfree, dynrels); |
c906108c SS |
1192 | |
1193 | dynrel_count = bfd_canonicalize_dynamic_reloc (abfd, dynrels, dynsyms); | |
1194 | if (dynrel_count < 0) | |
1195 | { | |
1196 | do_cleanups (back_to); | |
1197 | return; | |
1198 | } | |
1199 | ||
1200 | for (counter = 0, relptr = dynrels; | |
1201 | counter < dynrel_count; | |
1202 | counter++, relptr++) | |
1203 | { | |
1204 | arelent *rel = *relptr; | |
1205 | CORE_ADDR address = | |
b8fbeb18 | 1206 | rel->address + ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
1207 | |
1208 | switch (bfd_get_arch (abfd)) | |
1209 | { | |
1210 | case bfd_arch_sparc: | |
1211 | if (rel->howto->type != RELOC_JMP_SLOT) | |
1212 | continue; | |
1213 | break; | |
1214 | case bfd_arch_m68k: | |
1215 | /* `16' is the type BFD produces for a jump table relocation. */ | |
1216 | if (rel->howto->type != 16) | |
1217 | continue; | |
1218 | ||
1219 | /* Adjust address in the jump table to point to | |
1220 | the start of the bsr instruction. */ | |
1221 | address -= 2; | |
1222 | break; | |
1223 | default: | |
1224 | continue; | |
1225 | } | |
1226 | ||
1227 | name = (char *) bfd_asymbol_name (*rel->sym_ptr_ptr); | |
1228 | prim_record_minimal_symbol (name, address, mst_solib_trampoline, | |
1229 | objfile); | |
1230 | } | |
1231 | ||
1232 | do_cleanups (back_to); | |
1233 | } | |
1234 | ||
4867e41e | 1235 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
a78f21af | 1236 | static CORE_ADDR |
4867e41e DM |
1237 | find_stab_function_addr (char *namestring, char *filename, |
1238 | struct objfile *objfile) | |
1239 | { | |
1240 | struct minimal_symbol *msym; | |
1241 | char *p; | |
1242 | int n; | |
1243 | ||
1244 | p = strchr (namestring, ':'); | |
1245 | if (p == NULL) | |
1246 | p = namestring; | |
1247 | n = p - namestring; | |
1248 | p = alloca (n + 2); | |
1249 | strncpy (p, namestring, n); | |
1250 | p[n] = 0; | |
1251 | ||
1252 | msym = lookup_minimal_symbol (p, filename, objfile); | |
1253 | if (msym == NULL) | |
1254 | { | |
1255 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
1256 | try again with an appended underscore if the minimal symbol | |
1257 | was not found. */ | |
1258 | p[n] = '_'; | |
1259 | p[n + 1] = 0; | |
1260 | msym = lookup_minimal_symbol (p, filename, objfile); | |
1261 | } | |
1262 | ||
1263 | if (msym == NULL && filename != NULL) | |
1264 | { | |
1265 | /* Try again without the filename. */ | |
1266 | p[n] = 0; | |
1267 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
1268 | } | |
1269 | if (msym == NULL && filename != NULL) | |
1270 | { | |
1271 | /* And try again for Sun Fortran, but without the filename. */ | |
1272 | p[n] = '_'; | |
1273 | p[n + 1] = 0; | |
1274 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
1275 | } | |
1276 | ||
1277 | return msym == NULL ? 0 : SYMBOL_VALUE_ADDRESS (msym); | |
1278 | } | |
1279 | #endif /* SOFUN_ADDRESS_MAYBE_MISSING */ | |
1280 | ||
23136709 KB |
1281 | static void |
1282 | function_outside_compilation_unit_complaint (const char *arg1) | |
1283 | { | |
1284 | complaint (&symfile_complaints, | |
1285 | "function `%s' appears to be defined outside of all compilation units", | |
1286 | arg1); | |
1287 | } | |
1288 | ||
d4f3574e SS |
1289 | /* Setup partial_symtab's describing each source file for which |
1290 | debugging information is available. */ | |
c906108c SS |
1291 | |
1292 | static void | |
fba45db2 | 1293 | read_dbx_symtab (struct objfile *objfile) |
c906108c | 1294 | { |
52f0bd74 | 1295 | struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
c906108c | 1296 | struct internal_nlist nlist; |
d4f3574e SS |
1297 | CORE_ADDR text_addr; |
1298 | int text_size; | |
c906108c | 1299 | |
52f0bd74 | 1300 | char *namestring; |
c906108c SS |
1301 | int nsl; |
1302 | int past_first_source_file = 0; | |
1303 | CORE_ADDR last_o_file_start = 0; | |
1304 | CORE_ADDR last_function_start = 0; | |
1305 | struct cleanup *back_to; | |
1306 | bfd *abfd; | |
1307 | int textlow_not_set; | |
7c8a5605 | 1308 | int data_sect_index; |
c906108c SS |
1309 | |
1310 | /* Current partial symtab */ | |
1311 | struct partial_symtab *pst; | |
1312 | ||
1313 | /* List of current psymtab's include files */ | |
1314 | char **psymtab_include_list; | |
1315 | int includes_allocated; | |
1316 | int includes_used; | |
1317 | ||
1318 | /* Index within current psymtab dependency list */ | |
1319 | struct partial_symtab **dependency_list; | |
1320 | int dependencies_used, dependencies_allocated; | |
1321 | ||
d4f3574e SS |
1322 | text_addr = DBX_TEXT_ADDR (objfile); |
1323 | text_size = DBX_TEXT_SIZE (objfile); | |
1324 | ||
c906108c SS |
1325 | /* FIXME. We probably want to change stringtab_global rather than add this |
1326 | while processing every symbol entry. FIXME. */ | |
1327 | file_string_table_offset = 0; | |
1328 | next_file_string_table_offset = 0; | |
1329 | ||
1330 | stringtab_global = DBX_STRINGTAB (objfile); | |
c5aa993b | 1331 | |
c906108c SS |
1332 | pst = (struct partial_symtab *) 0; |
1333 | ||
1334 | includes_allocated = 30; | |
1335 | includes_used = 0; | |
1336 | psymtab_include_list = (char **) alloca (includes_allocated * | |
1337 | sizeof (char *)); | |
1338 | ||
1339 | dependencies_allocated = 30; | |
1340 | dependencies_used = 0; | |
1341 | dependency_list = | |
1342 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1343 | sizeof (struct partial_symtab *)); | |
1344 | ||
1345 | /* Init bincl list */ | |
1346 | init_bincl_list (20, objfile); | |
74b7792f | 1347 | back_to = make_cleanup_free_bincl_list (objfile); |
c906108c SS |
1348 | |
1349 | last_source_file = NULL; | |
1350 | ||
96baa820 | 1351 | lowest_text_address = (CORE_ADDR) -1; |
c906108c SS |
1352 | |
1353 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ | |
1354 | abfd = objfile->obfd; | |
1355 | symbuf_end = symbuf_idx = 0; | |
1356 | next_symbol_text_func = dbx_next_symbol_text; | |
1357 | textlow_not_set = 1; | |
1358 | has_line_numbers = 0; | |
1359 | ||
4f49b26b JB |
1360 | /* FIXME: jimb/2003-09-12: We don't apply the right section's offset |
1361 | to global and static variables. The stab for a global or static | |
1362 | variable doesn't give us any indication of which section it's in, | |
1363 | so we can't tell immediately which offset in | |
1364 | objfile->section_offsets we should apply to the variable's | |
1365 | address. | |
1366 | ||
1367 | We could certainly find out which section contains the variable | |
1368 | by looking up the variable's unrelocated address with | |
1369 | find_pc_section, but that would be expensive; this is the | |
1370 | function that constructs the partial symbol tables by examining | |
1371 | every symbol in the entire executable, and it's | |
1372 | performance-critical. So that expense would not be welcome. I'm | |
1373 | not sure what to do about this at the moment. | |
1374 | ||
1375 | What we have done for years is to simply assume that the .data | |
1376 | section's offset is appropriate for all global and static | |
1377 | variables. Recently, this was expanded to fall back to the .bss | |
1378 | section's offset if there is no .data section, and then to the | |
1379 | .rodata section's offset. */ | |
7c8a5605 JB |
1380 | data_sect_index = objfile->sect_index_data; |
1381 | if (data_sect_index == -1) | |
1382 | data_sect_index = SECT_OFF_BSS (objfile); | |
2a13f9bc JB |
1383 | if (data_sect_index == -1) |
1384 | data_sect_index = SECT_OFF_RODATA (objfile); | |
d646061f JB |
1385 | |
1386 | /* If data_sect_index is still -1, that's okay. It's perfectly fine | |
1387 | for the file to have no .data, no .bss, and no .text at all, if | |
1388 | it also has no global or static variables. If it does, we will | |
1389 | get an internal error from an ANOFFSET macro below when we try to | |
1390 | use data_sect_index. */ | |
7c8a5605 | 1391 | |
c906108c SS |
1392 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
1393 | { | |
1394 | /* Get the symbol for this run and pull out some info */ | |
c5aa993b | 1395 | QUIT; /* allow this to be interruptable */ |
c906108c SS |
1396 | if (symbuf_idx == symbuf_end) |
1397 | fill_symbuf (abfd); | |
1398 | bufp = &symbuf[symbuf_idx++]; | |
1399 | ||
1400 | /* | |
1401 | * Special case to speed up readin. | |
1402 | */ | |
1403 | if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE) | |
1404 | { | |
1405 | has_line_numbers = 1; | |
1406 | continue; | |
1407 | } | |
1408 | ||
1409 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
1410 | OBJSTAT (objfile, n_stabs++); | |
1411 | ||
1412 | /* Ok. There is a lot of code duplicated in the rest of this | |
1413 | switch statement (for efficiency reasons). Since I don't | |
1414 | like duplicating code, I will do my penance here, and | |
1415 | describe the code which is duplicated: | |
1416 | ||
c5aa993b JM |
1417 | *) The assignment to namestring. |
1418 | *) The call to strchr. | |
1419 | *) The addition of a partial symbol the the two partial | |
1420 | symbol lists. This last is a large section of code, so | |
1421 | I've imbedded it in the following macro. | |
6a34fd2f | 1422 | */ |
c5aa993b | 1423 | |
6a34fd2f EZ |
1424 | switch (nlist.n_type) |
1425 | { | |
6a34fd2f EZ |
1426 | char *p; |
1427 | /* | |
1428 | * Standard, external, non-debugger, symbols | |
1429 | */ | |
1430 | ||
1431 | case N_TEXT | N_EXT: | |
1432 | case N_NBTEXT | N_EXT: | |
1433 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1434 | goto record_it; | |
1435 | ||
1436 | case N_DATA | N_EXT: | |
1437 | case N_NBDATA | N_EXT: | |
14f75137 | 1438 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
6a34fd2f EZ |
1439 | goto record_it; |
1440 | ||
1441 | case N_BSS: | |
1442 | case N_BSS | N_EXT: | |
1443 | case N_NBBSS | N_EXT: | |
1444 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
1445 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile)); | |
1446 | goto record_it; | |
1447 | ||
1448 | case N_ABS | N_EXT: | |
1449 | record_it: | |
1450 | namestring = set_namestring (objfile, nlist); | |
1451 | ||
1452 | bss_ext_symbol: | |
1453 | record_minimal_symbol (namestring, nlist.n_value, | |
1454 | nlist.n_type, objfile); /* Always */ | |
1455 | continue; | |
1456 | ||
1457 | /* Standard, local, non-debugger, symbols */ | |
1458 | ||
1459 | case N_NBTEXT: | |
1460 | ||
1461 | /* We need to be able to deal with both N_FN or N_TEXT, | |
1462 | because we have no way of knowing whether the sys-supplied ld | |
1463 | or GNU ld was used to make the executable. Sequents throw | |
1464 | in another wrinkle -- they renumbered N_FN. */ | |
1465 | ||
1466 | case N_FN: | |
1467 | case N_FN_SEQ: | |
1468 | case N_TEXT: | |
1469 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1470 | namestring = set_namestring (objfile, nlist); | |
1471 | ||
1472 | if ((namestring[0] == '-' && namestring[1] == 'l') | |
1473 | || (namestring[(nsl = strlen (namestring)) - 1] == 'o' | |
1474 | && namestring[nsl - 2] == '.')) | |
1475 | { | |
1476 | if (objfile->ei.entry_point < nlist.n_value && | |
1477 | objfile->ei.entry_point >= last_o_file_start) | |
1478 | { | |
627b3ba2 AC |
1479 | objfile->ei.deprecated_entry_file_lowpc = last_o_file_start; |
1480 | objfile->ei.deprecated_entry_file_highpc = nlist.n_value; | |
6a34fd2f EZ |
1481 | } |
1482 | if (past_first_source_file && pst | |
1483 | /* The gould NP1 uses low values for .o and -l symbols | |
1484 | which are not the address. */ | |
5afc051b | 1485 | && nlist.n_value >= pst->textlow) |
6a34fd2f EZ |
1486 | { |
1487 | end_psymtab (pst, psymtab_include_list, includes_used, | |
1488 | symnum * symbol_size, | |
5afc051b JB |
1489 | nlist.n_value > pst->texthigh |
1490 | ? nlist.n_value : pst->texthigh, | |
6a34fd2f EZ |
1491 | dependency_list, dependencies_used, textlow_not_set); |
1492 | pst = (struct partial_symtab *) 0; | |
1493 | includes_used = 0; | |
1494 | dependencies_used = 0; | |
1495 | } | |
1496 | else | |
1497 | past_first_source_file = 1; | |
1498 | last_o_file_start = nlist.n_value; | |
1499 | } | |
1500 | else | |
1501 | goto record_it; | |
1502 | continue; | |
1503 | ||
1504 | case N_DATA: | |
14f75137 | 1505 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile)); |
6a34fd2f EZ |
1506 | goto record_it; |
1507 | ||
1508 | case N_UNDF | N_EXT: | |
1509 | if (nlist.n_value != 0) | |
1510 | { | |
1511 | /* This is a "Fortran COMMON" symbol. See if the target | |
1512 | environment knows where it has been relocated to. */ | |
1513 | ||
1514 | CORE_ADDR reladdr; | |
1515 | ||
1516 | namestring = set_namestring (objfile, nlist); | |
1517 | if (target_lookup_symbol (namestring, &reladdr)) | |
1518 | { | |
1519 | continue; /* Error in lookup; ignore symbol for now. */ | |
1520 | } | |
1521 | nlist.n_type ^= (N_BSS ^ N_UNDF); /* Define it as a bss-symbol */ | |
1522 | nlist.n_value = reladdr; | |
1523 | goto bss_ext_symbol; | |
1524 | } | |
1525 | continue; /* Just undefined, not COMMON */ | |
1526 | ||
1527 | case N_UNDF: | |
1528 | if (processing_acc_compilation && nlist.n_strx == 1) | |
1529 | { | |
1530 | /* Deal with relative offsets in the string table | |
1531 | used in ELF+STAB under Solaris. If we want to use the | |
1532 | n_strx field, which contains the name of the file, | |
1533 | we must adjust file_string_table_offset *before* calling | |
1534 | set_namestring(). */ | |
1535 | past_first_source_file = 1; | |
1536 | file_string_table_offset = next_file_string_table_offset; | |
1537 | next_file_string_table_offset = | |
1538 | file_string_table_offset + nlist.n_value; | |
1539 | if (next_file_string_table_offset < file_string_table_offset) | |
1540 | error ("string table offset backs up at %d", symnum); | |
1541 | /* FIXME -- replace error() with complaint. */ | |
1542 | continue; | |
1543 | } | |
1544 | continue; | |
1545 | ||
1546 | /* Lots of symbol types we can just ignore. */ | |
1547 | ||
1548 | case N_ABS: | |
1549 | case N_NBDATA: | |
1550 | case N_NBBSS: | |
1551 | continue; | |
1552 | ||
1553 | /* Keep going . . . */ | |
1554 | ||
1555 | /* | |
1556 | * Special symbol types for GNU | |
1557 | */ | |
1558 | case N_INDR: | |
1559 | case N_INDR | N_EXT: | |
1560 | case N_SETA: | |
1561 | case N_SETA | N_EXT: | |
1562 | case N_SETT: | |
1563 | case N_SETT | N_EXT: | |
1564 | case N_SETD: | |
1565 | case N_SETD | N_EXT: | |
1566 | case N_SETB: | |
1567 | case N_SETB | N_EXT: | |
1568 | case N_SETV: | |
1569 | continue; | |
1570 | ||
1571 | /* | |
1572 | * Debugger symbols | |
1573 | */ | |
1574 | ||
1575 | case N_SO: | |
1576 | { | |
1577 | CORE_ADDR valu; | |
1578 | static int prev_so_symnum = -10; | |
1579 | static int first_so_symnum; | |
1580 | char *p; | |
1581 | int prev_textlow_not_set; | |
1582 | ||
1583 | valu = nlist.n_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1584 | ||
1585 | prev_textlow_not_set = textlow_not_set; | |
1586 | ||
1587 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
1588 | /* A zero value is probably an indication for the SunPRO 3.0 | |
1589 | compiler. end_psymtab explicitly tests for zero, so | |
1590 | don't relocate it. */ | |
1591 | ||
1592 | if (nlist.n_value == 0) | |
1593 | { | |
1594 | textlow_not_set = 1; | |
1595 | valu = 0; | |
1596 | } | |
1597 | else | |
1598 | textlow_not_set = 0; | |
1599 | #else | |
1600 | textlow_not_set = 0; | |
1601 | #endif | |
1602 | past_first_source_file = 1; | |
1603 | ||
1604 | if (prev_so_symnum != symnum - 1) | |
1605 | { /* Here if prev stab wasn't N_SO */ | |
1606 | first_so_symnum = symnum; | |
1607 | ||
1608 | if (pst) | |
1609 | { | |
1610 | end_psymtab (pst, psymtab_include_list, includes_used, | |
1611 | symnum * symbol_size, | |
5afc051b | 1612 | valu > pst->texthigh ? valu : pst->texthigh, |
6a34fd2f EZ |
1613 | dependency_list, dependencies_used, |
1614 | prev_textlow_not_set); | |
1615 | pst = (struct partial_symtab *) 0; | |
1616 | includes_used = 0; | |
1617 | dependencies_used = 0; | |
1618 | } | |
1619 | } | |
1620 | ||
1621 | prev_so_symnum = symnum; | |
1622 | ||
1623 | /* End the current partial symtab and start a new one */ | |
1624 | ||
1625 | namestring = set_namestring (objfile, nlist); | |
1626 | ||
1627 | /* Null name means end of .o file. Don't start a new one. */ | |
1628 | if (*namestring == '\000') | |
1629 | continue; | |
1630 | ||
1631 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
1632 | The first one is a directory name; the second the file name. | |
1633 | If pst exists, is empty, and has a filename ending in '/', | |
1634 | we assume the previous N_SO was a directory name. */ | |
1635 | ||
1636 | p = strrchr (namestring, '/'); | |
1637 | if (p && *(p + 1) == '\000') | |
1638 | continue; /* Simply ignore directory name SOs */ | |
1639 | ||
1640 | /* Some other compilers (C++ ones in particular) emit useless | |
1641 | SOs for non-existant .c files. We ignore all subsequent SOs that | |
1642 | immediately follow the first. */ | |
1643 | ||
1644 | if (!pst) | |
1645 | pst = start_psymtab (objfile, | |
1646 | namestring, valu, | |
1647 | first_so_symnum * symbol_size, | |
1648 | objfile->global_psymbols.next, | |
1649 | objfile->static_psymbols.next); | |
1650 | continue; | |
1651 | } | |
1652 | ||
1653 | case N_BINCL: | |
1654 | { | |
1655 | enum language tmp_language; | |
1656 | /* Add this bincl to the bincl_list for future EXCLs. No | |
1657 | need to save the string; it'll be around until | |
1658 | read_dbx_symtab function returns */ | |
1659 | ||
1660 | namestring = set_namestring (objfile, nlist); | |
1661 | tmp_language = deduce_language_from_filename (namestring); | |
1662 | ||
1663 | /* Only change the psymtab's language if we've learned | |
1664 | something useful (eg. tmp_language is not language_unknown). | |
1665 | In addition, to match what start_subfile does, never change | |
1666 | from C++ to C. */ | |
1667 | if (tmp_language != language_unknown | |
1668 | && (tmp_language != language_c | |
1669 | || psymtab_language != language_cplus)) | |
1670 | psymtab_language = tmp_language; | |
1671 | ||
1672 | if (pst == NULL) | |
1673 | { | |
1674 | /* FIXME: we should not get here without a PST to work on. | |
1675 | Attempt to recover. */ | |
23136709 KB |
1676 | complaint (&symfile_complaints, |
1677 | "N_BINCL %s not in entries for any file, at symtab pos %d", | |
1678 | namestring, symnum); | |
6a34fd2f EZ |
1679 | continue; |
1680 | } | |
1681 | add_bincl_to_list (pst, namestring, nlist.n_value); | |
1682 | ||
1683 | /* Mark down an include file in the current psymtab */ | |
1684 | ||
1685 | goto record_include_file; | |
1686 | } | |
1687 | ||
1688 | case N_SOL: | |
1689 | { | |
1690 | enum language tmp_language; | |
1691 | /* Mark down an include file in the current psymtab */ | |
1692 | ||
1693 | namestring = set_namestring (objfile, nlist); | |
1694 | tmp_language = deduce_language_from_filename (namestring); | |
1695 | ||
1696 | /* Only change the psymtab's language if we've learned | |
1697 | something useful (eg. tmp_language is not language_unknown). | |
1698 | In addition, to match what start_subfile does, never change | |
1699 | from C++ to C. */ | |
1700 | if (tmp_language != language_unknown | |
1701 | && (tmp_language != language_c | |
1702 | || psymtab_language != language_cplus)) | |
1703 | psymtab_language = tmp_language; | |
1704 | ||
1705 | /* In C++, one may expect the same filename to come round many | |
1706 | times, when code is coming alternately from the main file | |
1707 | and from inline functions in other files. So I check to see | |
1708 | if this is a file we've seen before -- either the main | |
1709 | source file, or a previously included file. | |
1710 | ||
1711 | This seems to be a lot of time to be spending on N_SOL, but | |
1712 | things like "break c-exp.y:435" need to work (I | |
1713 | suppose the psymtab_include_list could be hashed or put | |
1714 | in a binary tree, if profiling shows this is a major hog). */ | |
1715 | if (pst && STREQ (namestring, pst->filename)) | |
1716 | continue; | |
1717 | { | |
1718 | register int i; | |
1719 | for (i = 0; i < includes_used; i++) | |
1720 | if (STREQ (namestring, psymtab_include_list[i])) | |
1721 | { | |
1722 | i = -1; | |
1723 | break; | |
1724 | } | |
1725 | if (i == -1) | |
1726 | continue; | |
1727 | } | |
1728 | ||
1729 | record_include_file: | |
1730 | ||
1731 | psymtab_include_list[includes_used++] = namestring; | |
1732 | if (includes_used >= includes_allocated) | |
1733 | { | |
1734 | char **orig = psymtab_include_list; | |
1735 | ||
1736 | psymtab_include_list = (char **) | |
1737 | alloca ((includes_allocated *= 2) * | |
1738 | sizeof (char *)); | |
4efb68b1 | 1739 | memcpy (psymtab_include_list, orig, |
6a34fd2f EZ |
1740 | includes_used * sizeof (char *)); |
1741 | } | |
1742 | continue; | |
1743 | } | |
1744 | case N_LSYM: /* Typedef or automatic variable. */ | |
1745 | case N_STSYM: /* Data seg var -- static */ | |
1746 | case N_LCSYM: /* BSS " */ | |
1747 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
1748 | case N_NBSTS: /* Gould nobase. */ | |
1749 | case N_NBLCS: /* symbols. */ | |
1750 | case N_FUN: | |
1751 | case N_GSYM: /* Global (extern) variable; can be | |
1752 | data or bss (sigh FIXME). */ | |
1753 | ||
1754 | /* Following may probably be ignored; I'll leave them here | |
1755 | for now (until I do Pascal and Modula 2 extensions). */ | |
1756 | ||
1757 | case N_PC: /* I may or may not need this; I | |
1758 | suspect not. */ | |
1759 | case N_M2C: /* I suspect that I can ignore this here. */ | |
1760 | case N_SCOPE: /* Same. */ | |
1761 | ||
1762 | namestring = set_namestring (objfile, nlist); | |
1763 | ||
1764 | /* See if this is an end of function stab. */ | |
1765 | if (pst && nlist.n_type == N_FUN && *namestring == '\000') | |
1766 | { | |
1767 | CORE_ADDR valu; | |
1768 | ||
1769 | /* It's value is the size (in bytes) of the function for | |
1770 | function relative stabs, or the address of the function's | |
1771 | end for old style stabs. */ | |
1772 | valu = nlist.n_value + last_function_start; | |
5afc051b JB |
1773 | if (pst->texthigh == 0 || valu > pst->texthigh) |
1774 | pst->texthigh = valu; | |
6a34fd2f EZ |
1775 | break; |
1776 | } | |
1777 | ||
1778 | p = (char *) strchr (namestring, ':'); | |
1779 | if (!p) | |
1780 | continue; /* Not a debugging symbol. */ | |
1781 | ||
1782 | ||
1783 | ||
1784 | /* Main processing section for debugging symbols which | |
1785 | the initial read through the symbol tables needs to worry | |
1786 | about. If we reach this point, the symbol which we are | |
1787 | considering is definitely one we are interested in. | |
1788 | p must also contain the (valid) index into the namestring | |
1789 | which indicates the debugging type symbol. */ | |
1790 | ||
1791 | switch (p[1]) | |
1792 | { | |
1793 | case 'S': | |
7c8a5605 | 1794 | nlist.n_value += ANOFFSET (objfile->section_offsets, data_sect_index); |
6a34fd2f EZ |
1795 | #ifdef STATIC_TRANSFORM_NAME |
1796 | namestring = STATIC_TRANSFORM_NAME (namestring); | |
1797 | #endif | |
1798 | add_psymbol_to_list (namestring, p - namestring, | |
176620f1 | 1799 | VAR_DOMAIN, LOC_STATIC, |
6a34fd2f EZ |
1800 | &objfile->static_psymbols, |
1801 | 0, nlist.n_value, | |
1802 | psymtab_language, objfile); | |
1803 | continue; | |
1804 | case 'G': | |
7c8a5605 | 1805 | nlist.n_value += ANOFFSET (objfile->section_offsets, data_sect_index); |
6a34fd2f EZ |
1806 | /* The addresses in these entries are reported to be |
1807 | wrong. See the code that reads 'G's for symtabs. */ | |
1808 | add_psymbol_to_list (namestring, p - namestring, | |
176620f1 | 1809 | VAR_DOMAIN, LOC_STATIC, |
6a34fd2f EZ |
1810 | &objfile->global_psymbols, |
1811 | 0, nlist.n_value, | |
1812 | psymtab_language, objfile); | |
1813 | continue; | |
1814 | ||
1815 | case 'T': | |
1816 | /* When a 'T' entry is defining an anonymous enum, it | |
1817 | may have a name which is the empty string, or a | |
1818 | single space. Since they're not really defining a | |
1819 | symbol, those shouldn't go in the partial symbol | |
1820 | table. We do pick up the elements of such enums at | |
1821 | 'check_enum:', below. */ | |
1822 | if (p >= namestring + 2 | |
1823 | || (p == namestring + 1 | |
1824 | && namestring[0] != ' ')) | |
1825 | { | |
1826 | add_psymbol_to_list (namestring, p - namestring, | |
176620f1 | 1827 | STRUCT_DOMAIN, LOC_TYPEDEF, |
6a34fd2f EZ |
1828 | &objfile->static_psymbols, |
1829 | nlist.n_value, 0, | |
1830 | psymtab_language, objfile); | |
1831 | if (p[2] == 't') | |
1832 | { | |
1833 | /* Also a typedef with the same name. */ | |
1834 | add_psymbol_to_list (namestring, p - namestring, | |
176620f1 | 1835 | VAR_DOMAIN, LOC_TYPEDEF, |
6a34fd2f EZ |
1836 | &objfile->static_psymbols, |
1837 | nlist.n_value, 0, | |
1838 | psymtab_language, objfile); | |
1839 | p += 1; | |
1840 | } | |
25caa7a8 EZ |
1841 | #if 0 /* OBSOLETE CFront */ |
1842 | // OBSOLETE /* The semantics of C++ state that "struct foo { ... }" | |
1843 | // OBSOLETE also defines a typedef for "foo". Unfortuantely, cfront | |
1844 | // OBSOLETE never makes the typedef when translating from C++ to C. | |
1845 | // OBSOLETE We make the typedef here so that "ptype foo" works as | |
1846 | // OBSOLETE expected for cfront translated code. */ | |
1847 | // OBSOLETE else if (psymtab_language == language_cplus) | |
1848 | // OBSOLETE { | |
1849 | // OBSOLETE /* Also a typedef with the same name. */ | |
1850 | // OBSOLETE add_psymbol_to_list (namestring, p - namestring, | |
176620f1 | 1851 | // OBSOLETE VAR_DOMAIN, LOC_TYPEDEF, |
25caa7a8 EZ |
1852 | // OBSOLETE &objfile->static_psymbols, |
1853 | // OBSOLETE nlist.n_value, 0, | |
1854 | // OBSOLETE psymtab_language, objfile); | |
1855 | // OBSOLETE } | |
1856 | #endif /* OBSOLETE CFront */ | |
6a34fd2f EZ |
1857 | } |
1858 | goto check_enum; | |
1859 | case 't': | |
1860 | if (p != namestring) /* a name is there, not just :T... */ | |
1861 | { | |
1862 | add_psymbol_to_list (namestring, p - namestring, | |
176620f1 | 1863 | VAR_DOMAIN, LOC_TYPEDEF, |
6a34fd2f EZ |
1864 | &objfile->static_psymbols, |
1865 | nlist.n_value, 0, | |
1866 | psymtab_language, objfile); | |
1867 | } | |
1868 | check_enum: | |
1869 | /* If this is an enumerated type, we need to | |
1870 | add all the enum constants to the partial symbol | |
1871 | table. This does not cover enums without names, e.g. | |
1872 | "enum {a, b} c;" in C, but fortunately those are | |
1873 | rare. There is no way for GDB to find those from the | |
1874 | enum type without spending too much time on it. Thus | |
1875 | to solve this problem, the compiler needs to put out the | |
1876 | enum in a nameless type. GCC2 does this. */ | |
1877 | ||
1878 | /* We are looking for something of the form | |
1879 | <name> ":" ("t" | "T") [<number> "="] "e" | |
1880 | {<constant> ":" <value> ","} ";". */ | |
1881 | ||
1882 | /* Skip over the colon and the 't' or 'T'. */ | |
1883 | p += 2; | |
1884 | /* This type may be given a number. Also, numbers can come | |
1885 | in pairs like (0,26). Skip over it. */ | |
1886 | while ((*p >= '0' && *p <= '9') | |
1887 | || *p == '(' || *p == ',' || *p == ')' | |
1888 | || *p == '=') | |
1889 | p++; | |
1890 | ||
1891 | if (*p++ == 'e') | |
1892 | { | |
1893 | /* The aix4 compiler emits extra crud before the members. */ | |
1894 | if (*p == '-') | |
1895 | { | |
1896 | /* Skip over the type (?). */ | |
1897 | while (*p != ':') | |
1898 | p++; | |
1899 | ||
1900 | /* Skip over the colon. */ | |
1901 | p++; | |
1902 | } | |
1903 | ||
1904 | /* We have found an enumerated type. */ | |
1905 | /* According to comments in read_enum_type | |
1906 | a comma could end it instead of a semicolon. | |
1907 | I don't know where that happens. | |
1908 | Accept either. */ | |
1909 | while (*p && *p != ';' && *p != ',') | |
1910 | { | |
1911 | char *q; | |
1912 | ||
1913 | /* Check for and handle cretinous dbx symbol name | |
1914 | continuation! */ | |
1915 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
1916 | p = next_symbol_text (objfile); | |
1917 | ||
1918 | /* Point to the character after the name | |
1919 | of the enum constant. */ | |
1920 | for (q = p; *q && *q != ':'; q++) | |
1921 | ; | |
1922 | /* Note that the value doesn't matter for | |
1923 | enum constants in psymtabs, just in symtabs. */ | |
1924 | add_psymbol_to_list (p, q - p, | |
176620f1 | 1925 | VAR_DOMAIN, LOC_CONST, |
6a34fd2f EZ |
1926 | &objfile->static_psymbols, 0, |
1927 | 0, psymtab_language, objfile); | |
1928 | /* Point past the name. */ | |
1929 | p = q; | |
1930 | /* Skip over the value. */ | |
1931 | while (*p && *p != ',') | |
1932 | p++; | |
1933 | /* Advance past the comma. */ | |
1934 | if (*p) | |
1935 | p++; | |
1936 | } | |
1937 | } | |
1938 | continue; | |
1939 | case 'c': | |
1940 | /* Constant, e.g. from "const" in Pascal. */ | |
1941 | add_psymbol_to_list (namestring, p - namestring, | |
176620f1 | 1942 | VAR_DOMAIN, LOC_CONST, |
6a34fd2f EZ |
1943 | &objfile->static_psymbols, nlist.n_value, |
1944 | 0, psymtab_language, objfile); | |
1945 | continue; | |
1946 | ||
1947 | case 'f': | |
1948 | if (! pst) | |
1949 | { | |
1950 | int name_len = p - namestring; | |
1951 | char *name = xmalloc (name_len + 1); | |
1952 | memcpy (name, namestring, name_len); | |
1953 | name[name_len] = '\0'; | |
23136709 | 1954 | function_outside_compilation_unit_complaint (name); |
6a34fd2f EZ |
1955 | xfree (name); |
1956 | } | |
1957 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1958 | /* Kludges for ELF/STABS with Sun ACC */ | |
1959 | last_function_name = namestring; | |
1960 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
1961 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
1962 | value for the bottom of the text seg in those cases. */ | |
1963 | if (nlist.n_value == ANOFFSET (objfile->section_offsets, | |
1964 | SECT_OFF_TEXT (objfile))) | |
1965 | { | |
1966 | CORE_ADDR minsym_valu = | |
1967 | find_stab_function_addr (namestring, pst->filename, objfile); | |
1968 | /* find_stab_function_addr will return 0 if the minimal | |
1969 | symbol wasn't found. (Unfortunately, this might also | |
1970 | be a valid address.) Anyway, if it *does* return 0, | |
1971 | it is likely that the value was set correctly to begin | |
1972 | with... */ | |
1973 | if (minsym_valu != 0) | |
1974 | nlist.n_value = minsym_valu; | |
1975 | } | |
1976 | if (pst && textlow_not_set) | |
1977 | { | |
5afc051b | 1978 | pst->textlow = nlist.n_value; |
6a34fd2f EZ |
1979 | textlow_not_set = 0; |
1980 | } | |
1981 | #endif | |
1982 | /* End kludge. */ | |
1983 | ||
1984 | /* Keep track of the start of the last function so we | |
1985 | can handle end of function symbols. */ | |
1986 | last_function_start = nlist.n_value; | |
1987 | ||
1988 | /* In reordered executables this function may lie outside | |
1989 | the bounds created by N_SO symbols. If that's the case | |
1990 | use the address of this function as the low bound for | |
1991 | the partial symbol table. */ | |
1992 | if (pst | |
1993 | && (textlow_not_set | |
5afc051b | 1994 | || (nlist.n_value < pst->textlow |
6a34fd2f EZ |
1995 | && (nlist.n_value |
1996 | != ANOFFSET (objfile->section_offsets, | |
1997 | SECT_OFF_TEXT (objfile)))))) | |
1998 | { | |
5afc051b | 1999 | pst->textlow = nlist.n_value; |
6a34fd2f EZ |
2000 | textlow_not_set = 0; |
2001 | } | |
2002 | add_psymbol_to_list (namestring, p - namestring, | |
176620f1 | 2003 | VAR_DOMAIN, LOC_BLOCK, |
6a34fd2f EZ |
2004 | &objfile->static_psymbols, |
2005 | 0, nlist.n_value, | |
2006 | psymtab_language, objfile); | |
2007 | continue; | |
2008 | ||
2009 | /* Global functions were ignored here, but now they | |
2010 | are put into the global psymtab like one would expect. | |
2011 | They're also in the minimal symbol table. */ | |
2012 | case 'F': | |
2013 | if (! pst) | |
2014 | { | |
2015 | int name_len = p - namestring; | |
2016 | char *name = xmalloc (name_len + 1); | |
2017 | memcpy (name, namestring, name_len); | |
2018 | name[name_len] = '\0'; | |
23136709 | 2019 | function_outside_compilation_unit_complaint (name); |
6a34fd2f EZ |
2020 | xfree (name); |
2021 | } | |
2022 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2023 | /* Kludges for ELF/STABS with Sun ACC */ | |
2024 | last_function_name = namestring; | |
2025 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
2026 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
2027 | value for the bottom of the text seg in those cases. */ | |
2028 | if (nlist.n_value == ANOFFSET (objfile->section_offsets, | |
2029 | SECT_OFF_TEXT (objfile))) | |
2030 | { | |
2031 | CORE_ADDR minsym_valu = | |
2032 | find_stab_function_addr (namestring, pst->filename, objfile); | |
2033 | /* find_stab_function_addr will return 0 if the minimal | |
2034 | symbol wasn't found. (Unfortunately, this might also | |
2035 | be a valid address.) Anyway, if it *does* return 0, | |
2036 | it is likely that the value was set correctly to begin | |
2037 | with... */ | |
2038 | if (minsym_valu != 0) | |
2039 | nlist.n_value = minsym_valu; | |
2040 | } | |
2041 | if (pst && textlow_not_set) | |
2042 | { | |
5afc051b | 2043 | pst->textlow = nlist.n_value; |
6a34fd2f EZ |
2044 | textlow_not_set = 0; |
2045 | } | |
2046 | #endif | |
2047 | /* End kludge. */ | |
2048 | ||
2049 | /* Keep track of the start of the last function so we | |
2050 | can handle end of function symbols. */ | |
2051 | last_function_start = nlist.n_value; | |
2052 | ||
2053 | /* In reordered executables this function may lie outside | |
2054 | the bounds created by N_SO symbols. If that's the case | |
2055 | use the address of this function as the low bound for | |
2056 | the partial symbol table. */ | |
2057 | if (pst | |
2058 | && (textlow_not_set | |
5afc051b | 2059 | || (nlist.n_value < pst->textlow |
6a34fd2f EZ |
2060 | && (nlist.n_value |
2061 | != ANOFFSET (objfile->section_offsets, | |
2062 | SECT_OFF_TEXT (objfile)))))) | |
2063 | { | |
5afc051b | 2064 | pst->textlow = nlist.n_value; |
6a34fd2f EZ |
2065 | textlow_not_set = 0; |
2066 | } | |
2067 | add_psymbol_to_list (namestring, p - namestring, | |
176620f1 | 2068 | VAR_DOMAIN, LOC_BLOCK, |
6a34fd2f EZ |
2069 | &objfile->global_psymbols, |
2070 | 0, nlist.n_value, | |
2071 | psymtab_language, objfile); | |
2072 | continue; | |
2073 | ||
2074 | /* Two things show up here (hopefully); static symbols of | |
2075 | local scope (static used inside braces) or extensions | |
2076 | of structure symbols. We can ignore both. */ | |
2077 | case 'V': | |
2078 | case '(': | |
2079 | case '0': | |
2080 | case '1': | |
2081 | case '2': | |
2082 | case '3': | |
2083 | case '4': | |
2084 | case '5': | |
2085 | case '6': | |
2086 | case '7': | |
2087 | case '8': | |
2088 | case '9': | |
2089 | case '-': | |
2090 | case '#': /* for symbol identification (used in live ranges) */ | |
25caa7a8 EZ |
2091 | #if 0 /* OBSOLETE CFront */ |
2092 | // OBSOLETE /* added to support cfront stabs strings */ | |
2093 | // OBSOLETE case 'Z': /* for definition continuations */ | |
2094 | // OBSOLETE case 'P': /* for prototypes */ | |
2095 | #endif /* OBSOLETE CFront */ | |
6a34fd2f EZ |
2096 | continue; |
2097 | ||
2098 | case ':': | |
2099 | /* It is a C++ nested symbol. We don't need to record it | |
2100 | (I don't think); if we try to look up foo::bar::baz, | |
2101 | then symbols for the symtab containing foo should get | |
2102 | read in, I think. */ | |
2103 | /* Someone says sun cc puts out symbols like | |
2104 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2105 | which would get here with a symbol type of ':'. */ | |
2106 | continue; | |
2107 | ||
2108 | default: | |
2109 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
2110 | of a continued stab can show up here. The question is | |
2111 | whether they ever can mimic a normal stab--it would be | |
2112 | nice if not, since we certainly don't want to spend the | |
2113 | time searching to the end of every string looking for | |
2114 | a backslash. */ | |
2115 | ||
23136709 KB |
2116 | complaint (&symfile_complaints, "unknown symbol descriptor `%c'", |
2117 | p[1]); | |
6a34fd2f EZ |
2118 | |
2119 | /* Ignore it; perhaps it is an extension that we don't | |
2120 | know about. */ | |
2121 | continue; | |
2122 | } | |
2123 | ||
2124 | case N_EXCL: | |
2125 | ||
2126 | namestring = set_namestring (objfile, nlist); | |
2127 | ||
2128 | /* Find the corresponding bincl and mark that psymtab on the | |
2129 | psymtab dependency list */ | |
2130 | { | |
2131 | struct partial_symtab *needed_pst = | |
2132 | find_corresponding_bincl_psymtab (namestring, nlist.n_value); | |
2133 | ||
2134 | /* If this include file was defined earlier in this file, | |
2135 | leave it alone. */ | |
2136 | if (needed_pst == pst) | |
2137 | continue; | |
2138 | ||
2139 | if (needed_pst) | |
2140 | { | |
2141 | int i; | |
2142 | int found = 0; | |
2143 | ||
2144 | for (i = 0; i < dependencies_used; i++) | |
2145 | if (dependency_list[i] == needed_pst) | |
2146 | { | |
2147 | found = 1; | |
2148 | break; | |
2149 | } | |
2150 | ||
2151 | /* If it's already in the list, skip the rest. */ | |
2152 | if (found) | |
2153 | continue; | |
2154 | ||
2155 | dependency_list[dependencies_used++] = needed_pst; | |
2156 | if (dependencies_used >= dependencies_allocated) | |
2157 | { | |
2158 | struct partial_symtab **orig = dependency_list; | |
2159 | dependency_list = | |
2160 | (struct partial_symtab **) | |
2161 | alloca ((dependencies_allocated *= 2) | |
2162 | * sizeof (struct partial_symtab *)); | |
4efb68b1 | 2163 | memcpy (dependency_list, orig, |
6a34fd2f EZ |
2164 | (dependencies_used |
2165 | * sizeof (struct partial_symtab *))); | |
2166 | #ifdef DEBUG_INFO | |
2167 | fprintf_unfiltered (gdb_stderr, "Had to reallocate dependency list.\n"); | |
2168 | fprintf_unfiltered (gdb_stderr, "New dependencies allocated: %d\n", | |
2169 | dependencies_allocated); | |
2170 | #endif | |
2171 | } | |
2172 | } | |
2173 | } | |
2174 | continue; | |
2175 | ||
2176 | case N_ENDM: | |
2177 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
2178 | /* Solaris 2 end of module, finish current partial symbol table. | |
5afc051b | 2179 | end_psymtab will set pst->texthigh to the proper value, which |
6a34fd2f EZ |
2180 | is necessary if a module compiled without debugging info |
2181 | follows this module. */ | |
2182 | if (pst) | |
2183 | { | |
2184 | end_psymtab (pst, psymtab_include_list, includes_used, | |
2185 | symnum * symbol_size, | |
2186 | (CORE_ADDR) 0, | |
2187 | dependency_list, dependencies_used, textlow_not_set); | |
2188 | pst = (struct partial_symtab *) 0; | |
2189 | includes_used = 0; | |
2190 | dependencies_used = 0; | |
2191 | } | |
2192 | #endif | |
2193 | continue; | |
c906108c | 2194 | |
6a34fd2f EZ |
2195 | case N_RBRAC: |
2196 | #ifdef HANDLE_RBRAC | |
2197 | HANDLE_RBRAC (nlist.n_value); | |
2198 | continue; | |
2199 | #endif | |
2200 | case N_EINCL: | |
2201 | case N_DSLINE: | |
2202 | case N_BSLINE: | |
2203 | case N_SSYM: /* Claim: Structure or union element. | |
2204 | Hopefully, I can ignore this. */ | |
2205 | case N_ENTRY: /* Alternate entry point; can ignore. */ | |
2206 | case N_MAIN: /* Can definitely ignore this. */ | |
2207 | case N_CATCH: /* These are GNU C++ extensions */ | |
2208 | case N_EHDECL: /* that can safely be ignored here. */ | |
2209 | case N_LENG: | |
2210 | case N_BCOMM: | |
2211 | case N_ECOMM: | |
2212 | case N_ECOML: | |
2213 | case N_FNAME: | |
2214 | case N_SLINE: | |
2215 | case N_RSYM: | |
2216 | case N_PSYM: | |
2217 | case N_LBRAC: | |
2218 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
2219 | case N_DEFD: /* GNU Modula-2 */ | |
2220 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
2221 | ||
2222 | case N_OBJ: /* useless types from Solaris */ | |
2223 | case N_OPT: | |
2224 | /* These symbols aren't interesting; don't worry about them */ | |
2225 | ||
2226 | continue; | |
2227 | ||
2228 | default: | |
2229 | /* If we haven't found it yet, ignore it. It's probably some | |
2230 | new type we don't know about yet. */ | |
23136709 | 2231 | unknown_symtype_complaint (local_hex_string (nlist.n_type)); |
6a34fd2f EZ |
2232 | continue; |
2233 | } | |
c906108c SS |
2234 | } |
2235 | ||
2236 | /* If there's stuff to be cleaned up, clean it up. */ | |
c5aa993b | 2237 | if (DBX_SYMCOUNT (objfile) > 0 /* We have some syms */ |
6a34fd2f | 2238 | /*FIXME, does this have a bug at start address 0? */ |
c906108c | 2239 | && last_o_file_start |
c5aa993b JM |
2240 | && objfile->ei.entry_point < nlist.n_value |
2241 | && objfile->ei.entry_point >= last_o_file_start) | |
c906108c | 2242 | { |
627b3ba2 AC |
2243 | objfile->ei.deprecated_entry_file_lowpc = last_o_file_start; |
2244 | objfile->ei.deprecated_entry_file_highpc = nlist.n_value; | |
c906108c SS |
2245 | } |
2246 | ||
2247 | if (pst) | |
2248 | { | |
2249 | /* Don't set pst->texthigh lower than it already is. */ | |
2250 | CORE_ADDR text_end = | |
6a34fd2f EZ |
2251 | (lowest_text_address == (CORE_ADDR) -1 |
2252 | ? (text_addr + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))) | |
2253 | : lowest_text_address) | |
2254 | + text_size; | |
c906108c SS |
2255 | |
2256 | end_psymtab (pst, psymtab_include_list, includes_used, | |
2257 | symnum * symbol_size, | |
5afc051b | 2258 | text_end > pst->texthigh ? text_end : pst->texthigh, |
c906108c SS |
2259 | dependency_list, dependencies_used, textlow_not_set); |
2260 | } | |
2261 | ||
2262 | do_cleanups (back_to); | |
2263 | } | |
2264 | ||
2265 | /* Allocate and partially fill a partial symtab. It will be | |
2266 | completely filled at the end of the symbol list. | |
2267 | ||
2268 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2269 | is the address relative to which its symbols are (incremental) or 0 | |
2270 | (normal). */ | |
2271 | ||
2272 | ||
d4f3574e | 2273 | static struct partial_symtab * |
fba45db2 KB |
2274 | start_psymtab (struct objfile *objfile, char *filename, CORE_ADDR textlow, |
2275 | int ldsymoff, struct partial_symbol **global_syms, | |
2276 | struct partial_symbol **static_syms) | |
c906108c SS |
2277 | { |
2278 | struct partial_symtab *result = | |
d4f3574e | 2279 | start_psymtab_common (objfile, objfile->section_offsets, |
c5aa993b | 2280 | filename, textlow, global_syms, static_syms); |
c906108c SS |
2281 | |
2282 | result->read_symtab_private = (char *) | |
c5aa993b JM |
2283 | obstack_alloc (&objfile->psymbol_obstack, sizeof (struct symloc)); |
2284 | LDSYMOFF (result) = ldsymoff; | |
c906108c | 2285 | result->read_symtab = dbx_psymtab_to_symtab; |
c5aa993b JM |
2286 | SYMBOL_SIZE (result) = symbol_size; |
2287 | SYMBOL_OFFSET (result) = symbol_table_offset; | |
2288 | STRING_OFFSET (result) = string_table_offset; | |
2289 | FILE_STRING_OFFSET (result) = file_string_table_offset; | |
c906108c SS |
2290 | |
2291 | /* If we're handling an ELF file, drag some section-relocation info | |
2292 | for this source file out of the ELF symbol table, to compensate for | |
2293 | Sun brain death. This replaces the section_offsets in this psymtab, | |
2294 | if successful. */ | |
2295 | elfstab_offset_sections (objfile, result); | |
2296 | ||
2297 | /* Deduce the source language from the filename for this psymtab. */ | |
2298 | psymtab_language = deduce_language_from_filename (filename); | |
2299 | ||
2300 | return result; | |
2301 | } | |
2302 | ||
2303 | /* Close off the current usage of PST. | |
2304 | Returns PST or NULL if the partial symtab was empty and thrown away. | |
2305 | ||
2306 | FIXME: List variables and peculiarities of same. */ | |
2307 | ||
2308 | struct partial_symtab * | |
fba45db2 KB |
2309 | end_psymtab (struct partial_symtab *pst, char **include_list, int num_includes, |
2310 | int capping_symbol_offset, CORE_ADDR capping_text, | |
2311 | struct partial_symtab **dependency_list, int number_dependencies, | |
2312 | int textlow_not_set) | |
c906108c SS |
2313 | { |
2314 | int i; | |
c5aa993b | 2315 | struct objfile *objfile = pst->objfile; |
c906108c SS |
2316 | |
2317 | if (capping_symbol_offset != -1) | |
c5aa993b | 2318 | LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst); |
5afc051b | 2319 | pst->texthigh = capping_text; |
c906108c SS |
2320 | |
2321 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
2322 | /* Under Solaris, the N_SO symbols always have a value of 0, | |
2323 | instead of the usual address of the .o file. Therefore, | |
2324 | we have to do some tricks to fill in texthigh and textlow. | |
6a34fd2f | 2325 | The first trick is: if we see a static |
c906108c SS |
2326 | or global function, and the textlow for the current pst |
2327 | is not set (ie: textlow_not_set), then we use that function's | |
2328 | address for the textlow of the pst. */ | |
2329 | ||
2330 | /* Now, to fill in texthigh, we remember the last function seen | |
6a34fd2f | 2331 | in the .o file. Also, there's a hack in |
c906108c SS |
2332 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field |
2333 | to here via the misc_info field. Therefore, we can fill in | |
2334 | a reliable texthigh by taking the address plus size of the | |
2335 | last function in the file. */ | |
2336 | ||
5afc051b | 2337 | if (pst->texthigh == 0 && last_function_name) |
c906108c SS |
2338 | { |
2339 | char *p; | |
2340 | int n; | |
2341 | struct minimal_symbol *minsym; | |
2342 | ||
2343 | p = strchr (last_function_name, ':'); | |
2344 | if (p == NULL) | |
2345 | p = last_function_name; | |
2346 | n = p - last_function_name; | |
2347 | p = alloca (n + 2); | |
2348 | strncpy (p, last_function_name, n); | |
2349 | p[n] = 0; | |
c5aa993b | 2350 | |
c906108c SS |
2351 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
2352 | if (minsym == NULL) | |
2353 | { | |
2354 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
2355 | try again with an appended underscore if the minimal symbol | |
2356 | was not found. */ | |
2357 | p[n] = '_'; | |
2358 | p[n + 1] = 0; | |
2359 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); | |
2360 | } | |
2361 | ||
2362 | if (minsym) | |
5afc051b | 2363 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym) + MSYMBOL_SIZE (minsym); |
c906108c SS |
2364 | |
2365 | last_function_name = NULL; | |
2366 | } | |
2367 | ||
2368 | /* this test will be true if the last .o file is only data */ | |
2369 | if (textlow_not_set) | |
5afc051b | 2370 | pst->textlow = pst->texthigh; |
c906108c SS |
2371 | else |
2372 | { | |
2373 | struct partial_symtab *p1; | |
2374 | ||
2375 | /* If we know our own starting text address, then walk through all other | |
c5aa993b JM |
2376 | psymtabs for this objfile, and if any didn't know their ending text |
2377 | address, set it to our starting address. Take care to not set our | |
2378 | own ending address to our starting address, nor to set addresses on | |
2379 | `dependency' files that have both textlow and texthigh zero. */ | |
c906108c SS |
2380 | |
2381 | ALL_OBJFILE_PSYMTABS (objfile, p1) | |
c5aa993b | 2382 | { |
5afc051b | 2383 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) |
c5aa993b | 2384 | { |
5afc051b | 2385 | p1->texthigh = pst->textlow; |
c5aa993b | 2386 | /* if this file has only data, then make textlow match texthigh */ |
5afc051b JB |
2387 | if (p1->textlow == 0) |
2388 | p1->textlow = p1->texthigh; | |
c5aa993b JM |
2389 | } |
2390 | } | |
c906108c SS |
2391 | } |
2392 | ||
2393 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
2394 | #endif /* SOFUN_ADDRESS_MAYBE_MISSING. */ | |
2395 | ||
2396 | pst->n_global_syms = | |
2397 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); | |
2398 | pst->n_static_syms = | |
2399 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); | |
2400 | ||
2401 | pst->number_of_dependencies = number_dependencies; | |
2402 | if (number_dependencies) | |
2403 | { | |
2404 | pst->dependencies = (struct partial_symtab **) | |
2405 | obstack_alloc (&objfile->psymbol_obstack, | |
c5aa993b | 2406 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c | 2407 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2408 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2409 | } |
2410 | else | |
2411 | pst->dependencies = 0; | |
2412 | ||
2413 | for (i = 0; i < num_includes; i++) | |
2414 | { | |
2415 | struct partial_symtab *subpst = | |
c5aa993b | 2416 | allocate_psymtab (include_list[i], objfile); |
c906108c | 2417 | |
b8fbeb18 | 2418 | /* Copy the sesction_offsets array from the main psymtab. */ |
c906108c SS |
2419 | subpst->section_offsets = pst->section_offsets; |
2420 | subpst->read_symtab_private = | |
c5aa993b JM |
2421 | (char *) obstack_alloc (&objfile->psymbol_obstack, |
2422 | sizeof (struct symloc)); | |
2423 | LDSYMOFF (subpst) = | |
2424 | LDSYMLEN (subpst) = | |
5afc051b JB |
2425 | subpst->textlow = |
2426 | subpst->texthigh = 0; | |
c906108c SS |
2427 | |
2428 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2429 | shared by the entire set of include files. FIXME-someday. */ |
c906108c SS |
2430 | subpst->dependencies = (struct partial_symtab **) |
2431 | obstack_alloc (&objfile->psymbol_obstack, | |
2432 | sizeof (struct partial_symtab *)); | |
2433 | subpst->dependencies[0] = pst; | |
2434 | subpst->number_of_dependencies = 1; | |
2435 | ||
2436 | subpst->globals_offset = | |
2437 | subpst->n_global_syms = | |
c5aa993b JM |
2438 | subpst->statics_offset = |
2439 | subpst->n_static_syms = 0; | |
c906108c SS |
2440 | |
2441 | subpst->readin = 0; | |
2442 | subpst->symtab = 0; | |
2443 | subpst->read_symtab = pst->read_symtab; | |
2444 | } | |
2445 | ||
2446 | sort_pst_symbols (pst); | |
2447 | ||
2448 | /* If there is already a psymtab or symtab for a file of this name, remove it. | |
2449 | (If there is a symtab, more drastic things also happen.) | |
2450 | This happens in VxWorks. */ | |
2451 | free_named_symtabs (pst->filename); | |
2452 | ||
2453 | if (num_includes == 0 | |
2454 | && number_dependencies == 0 | |
2455 | && pst->n_global_syms == 0 | |
2456 | && pst->n_static_syms == 0 | |
2457 | && has_line_numbers == 0) | |
2458 | { | |
2459 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2460 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2461 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b JM |
2462 | any symbols in them. There can be a lot of them. But this check |
2463 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
2464 | is not empty, but we don't realize that. Fixing that without slowing | |
2465 | things down might be tricky. */ | |
c906108c SS |
2466 | |
2467 | discard_psymtab (pst); | |
2468 | ||
2469 | /* Indicate that psymtab was thrown away. */ | |
c5aa993b | 2470 | pst = (struct partial_symtab *) NULL; |
c906108c SS |
2471 | } |
2472 | return pst; | |
2473 | } | |
2474 | \f | |
2475 | static void | |
fba45db2 | 2476 | dbx_psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c SS |
2477 | { |
2478 | struct cleanup *old_chain; | |
2479 | int i; | |
c5aa993b | 2480 | |
c906108c SS |
2481 | if (!pst) |
2482 | return; | |
2483 | ||
2484 | if (pst->readin) | |
2485 | { | |
2486 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
c5aa993b | 2487 | pst->filename); |
c906108c SS |
2488 | return; |
2489 | } | |
2490 | ||
2491 | /* Read in all partial symtabs on which this one is dependent */ | |
2492 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2493 | if (!pst->dependencies[i]->readin) | |
2494 | { | |
2495 | /* Inform about additional files that need to be read in. */ | |
2496 | if (info_verbose) | |
2497 | { | |
2498 | fputs_filtered (" ", gdb_stdout); | |
2499 | wrap_here (""); | |
2500 | fputs_filtered ("and ", gdb_stdout); | |
2501 | wrap_here (""); | |
2502 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 2503 | wrap_here (""); /* Flush output */ |
c906108c SS |
2504 | gdb_flush (gdb_stdout); |
2505 | } | |
2506 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); | |
2507 | } | |
2508 | ||
c5aa993b | 2509 | if (LDSYMLEN (pst)) /* Otherwise it's a dummy */ |
c906108c SS |
2510 | { |
2511 | /* Init stuff necessary for reading in symbols */ | |
2512 | stabsread_init (); | |
2513 | buildsym_init (); | |
a0b3c4fd | 2514 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c SS |
2515 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
2516 | symbol_size = SYMBOL_SIZE (pst); | |
2517 | ||
2518 | /* Read in this file's symbols */ | |
2519 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); | |
2520 | read_ofile_symtab (pst); | |
c906108c SS |
2521 | |
2522 | do_cleanups (old_chain); | |
2523 | } | |
2524 | ||
2525 | pst->readin = 1; | |
2526 | } | |
2527 | ||
2528 | /* Read in all of the symbols for a given psymtab for real. | |
2529 | Be verbose about it if the user wants that. */ | |
2530 | ||
2531 | static void | |
fba45db2 | 2532 | dbx_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2533 | { |
2534 | bfd *sym_bfd; | |
086df311 | 2535 | struct cleanup *back_to = NULL; |
c906108c SS |
2536 | |
2537 | if (!pst) | |
2538 | return; | |
2539 | ||
2540 | if (pst->readin) | |
2541 | { | |
2542 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
c5aa993b | 2543 | pst->filename); |
c906108c SS |
2544 | return; |
2545 | } | |
2546 | ||
c5aa993b | 2547 | if (LDSYMLEN (pst) || pst->number_of_dependencies) |
c906108c SS |
2548 | { |
2549 | /* Print the message now, before reading the string table, | |
c5aa993b | 2550 | to avoid disconcerting pauses. */ |
c906108c SS |
2551 | if (info_verbose) |
2552 | { | |
2553 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
2554 | gdb_flush (gdb_stdout); | |
2555 | } | |
2556 | ||
2557 | sym_bfd = pst->objfile->obfd; | |
2558 | ||
2559 | next_symbol_text_func = dbx_next_symbol_text; | |
2560 | ||
086df311 DJ |
2561 | if (DBX_STAB_SECTION (pst->objfile)) |
2562 | { | |
2563 | stabs_data | |
2564 | = symfile_relocate_debug_section (pst->objfile->obfd, | |
2565 | DBX_STAB_SECTION (pst->objfile), | |
2566 | NULL); | |
2567 | if (stabs_data) | |
2568 | back_to = make_cleanup (free_current_contents, (void *) &stabs_data); | |
2569 | } | |
2570 | ||
c906108c SS |
2571 | dbx_psymtab_to_symtab_1 (pst); |
2572 | ||
086df311 DJ |
2573 | if (back_to) |
2574 | do_cleanups (back_to); | |
2575 | ||
c906108c SS |
2576 | /* Match with global symbols. This only needs to be done once, |
2577 | after all of the symtabs and dependencies have been read in. */ | |
2578 | scan_file_globals (pst->objfile); | |
2579 | ||
2580 | /* Finish up the debug error message. */ | |
2581 | if (info_verbose) | |
2582 | printf_filtered ("done.\n"); | |
2583 | } | |
2584 | } | |
2585 | ||
2586 | /* Read in a defined section of a specific object file's symbols. */ | |
c5aa993b | 2587 | |
c906108c | 2588 | static void |
fba45db2 | 2589 | read_ofile_symtab (struct partial_symtab *pst) |
c906108c | 2590 | { |
52f0bd74 AC |
2591 | char *namestring; |
2592 | struct external_nlist *bufp; | |
c906108c SS |
2593 | struct internal_nlist nlist; |
2594 | unsigned char type; | |
2595 | unsigned max_symnum; | |
52f0bd74 | 2596 | bfd *abfd; |
c906108c SS |
2597 | struct objfile *objfile; |
2598 | int sym_offset; /* Offset to start of symbols to read */ | |
2599 | int sym_size; /* Size of symbols to read */ | |
2600 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
2601 | int text_size; /* Size of text segment for symbols */ | |
2602 | struct section_offsets *section_offsets; | |
2603 | ||
2604 | objfile = pst->objfile; | |
c5aa993b JM |
2605 | sym_offset = LDSYMOFF (pst); |
2606 | sym_size = LDSYMLEN (pst); | |
5afc051b JB |
2607 | text_offset = pst->textlow; |
2608 | text_size = pst->texthigh - pst->textlow; | |
b8fbeb18 EZ |
2609 | /* This cannot be simply objfile->section_offsets because of |
2610 | elfstab_offset_sections() which initializes the psymtab section | |
2611 | offsets information in a special way, and that is different from | |
2612 | objfile->section_offsets. */ | |
c906108c SS |
2613 | section_offsets = pst->section_offsets; |
2614 | ||
2615 | current_objfile = objfile; | |
2616 | subfile_stack = NULL; | |
2617 | ||
2618 | stringtab_global = DBX_STRINGTAB (objfile); | |
2619 | last_source_file = NULL; | |
2620 | ||
2621 | abfd = objfile->obfd; | |
2622 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ | |
2623 | symbuf_end = symbuf_idx = 0; | |
086df311 DJ |
2624 | symbuf_read = 0; |
2625 | symbuf_left = sym_offset + sym_size; | |
c906108c SS |
2626 | |
2627 | /* It is necessary to actually read one symbol *before* the start | |
2628 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
2629 | occurs before the N_SO symbol. | |
2630 | ||
2631 | Detecting this in read_dbx_symtab | |
2632 | would slow down initial readin, so we look for it here instead. */ | |
c5aa993b | 2633 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c | 2634 | { |
086df311 | 2635 | stabs_seek (sym_offset - symbol_size); |
c906108c SS |
2636 | fill_symbuf (abfd); |
2637 | bufp = &symbuf[symbuf_idx++]; | |
2638 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2639 | OBJSTAT (objfile, n_stabs++); | |
2640 | ||
6a34fd2f | 2641 | namestring = set_namestring (objfile, nlist); |
c906108c SS |
2642 | |
2643 | processing_gcc_compilation = 0; | |
2644 | if (nlist.n_type == N_TEXT) | |
2645 | { | |
2646 | const char *tempstring = namestring; | |
2647 | ||
2648 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) | |
2649 | processing_gcc_compilation = 1; | |
2650 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) | |
2651 | processing_gcc_compilation = 2; | |
2652 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) | |
2653 | ++tempstring; | |
2654 | if (STREQN (tempstring, "__gnu_compiled", 14)) | |
2655 | processing_gcc_compilation = 2; | |
2656 | } | |
2657 | ||
2658 | /* Try to select a C++ demangling based on the compilation unit | |
c5aa993b | 2659 | producer. */ |
c906108c | 2660 | |
8052a17a JM |
2661 | #if 0 |
2662 | /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't | |
2663 | know whether it will use the old style or v3 mangling. */ | |
c906108c SS |
2664 | if (processing_gcc_compilation) |
2665 | { | |
2666 | if (AUTO_DEMANGLING) | |
2667 | { | |
2668 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
2669 | } | |
2670 | } | |
8052a17a | 2671 | #endif |
c906108c SS |
2672 | } |
2673 | else | |
2674 | { | |
2675 | /* The N_SO starting this symtab is the first symbol, so we | |
c5aa993b JM |
2676 | better not check the symbol before it. I'm not this can |
2677 | happen, but it doesn't hurt to check for it. */ | |
086df311 | 2678 | stabs_seek (sym_offset); |
c906108c SS |
2679 | processing_gcc_compilation = 0; |
2680 | } | |
2681 | ||
2682 | if (symbuf_idx == symbuf_end) | |
2683 | fill_symbuf (abfd); | |
2684 | bufp = &symbuf[symbuf_idx]; | |
2685 | if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO) | |
c5aa993b | 2686 | error ("First symbol in segment of executable not a source symbol"); |
c906108c SS |
2687 | |
2688 | max_symnum = sym_size / symbol_size; | |
2689 | ||
2690 | for (symnum = 0; | |
2691 | symnum < max_symnum; | |
2692 | symnum++) | |
2693 | { | |
2694 | QUIT; /* Allow this to be interruptable */ | |
2695 | if (symbuf_idx == symbuf_end) | |
c5aa993b | 2696 | fill_symbuf (abfd); |
c906108c SS |
2697 | bufp = &symbuf[symbuf_idx++]; |
2698 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2699 | OBJSTAT (objfile, n_stabs++); | |
2700 | ||
2701 | type = bfd_h_get_8 (abfd, bufp->e_type); | |
2702 | ||
6a34fd2f | 2703 | namestring = set_namestring (objfile, nlist); |
c906108c | 2704 | |
c5aa993b JM |
2705 | if (type & N_STAB) |
2706 | { | |
c906108c SS |
2707 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
2708 | namestring, section_offsets, objfile); | |
c5aa993b | 2709 | } |
c906108c SS |
2710 | /* We skip checking for a new .o or -l file; that should never |
2711 | happen in this routine. */ | |
2712 | else if (type == N_TEXT) | |
2713 | { | |
2714 | /* I don't think this code will ever be executed, because | |
2715 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
2716 | the N_SO symbol which starts this source file. | |
2717 | However, there is no reason not to accept | |
2718 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
2719 | ||
2720 | if (STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)) | |
2721 | processing_gcc_compilation = 1; | |
2722 | else if (STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)) | |
2723 | processing_gcc_compilation = 2; | |
2724 | ||
8052a17a JM |
2725 | #if 0 |
2726 | /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't | |
2727 | know whether it will use the old style or v3 mangling. */ | |
c906108c SS |
2728 | if (AUTO_DEMANGLING) |
2729 | { | |
2730 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
2731 | } | |
8052a17a | 2732 | #endif |
c906108c | 2733 | } |
c5aa993b JM |
2734 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
2735 | || type == (unsigned char) N_NBTEXT | |
2736 | ) | |
2737 | { | |
c906108c SS |
2738 | /* Global symbol: see if we came across a dbx defintion for |
2739 | a corresponding symbol. If so, store the value. Remove | |
2740 | syms from the chain when their values are stored, but | |
2741 | search the whole chain, as there may be several syms from | |
2742 | different files with the same name. */ | |
2743 | /* This is probably not true. Since the files will be read | |
2744 | in one at a time, each reference to a global symbol will | |
2745 | be satisfied in each file as it appears. So we skip this | |
2746 | section. */ | |
2747 | ; | |
c5aa993b | 2748 | } |
c906108c SS |
2749 | } |
2750 | ||
2751 | current_objfile = NULL; | |
2752 | ||
2753 | /* In a Solaris elf file, this variable, which comes from the | |
2754 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
5afc051b | 2755 | which comes from pst->textlow is correct. */ |
c906108c SS |
2756 | if (last_source_start_addr == 0) |
2757 | last_source_start_addr = text_offset; | |
2758 | ||
2759 | /* In reordered executables last_source_start_addr may not be the | |
2760 | lower bound for this symtab, instead use text_offset which comes | |
5afc051b | 2761 | from pst->textlow which is correct. */ |
c906108c SS |
2762 | if (last_source_start_addr > text_offset) |
2763 | last_source_start_addr = text_offset; | |
2764 | ||
b8fbeb18 | 2765 | pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT (objfile)); |
c906108c | 2766 | |
25caa7a8 EZ |
2767 | #if 0 /* OBSOLETE CFront */ |
2768 | // OBSOLETE /* Process items which we had to "process_later" due to dependencies | |
2769 | // OBSOLETE on other stabs. */ | |
2770 | // OBSOLETE process_now (objfile); | |
2771 | #endif /* OBSOLETE CFront */ | |
c906108c SS |
2772 | end_stabs (); |
2773 | } | |
c906108c | 2774 | \f |
c5aa993b | 2775 | |
c906108c SS |
2776 | /* This handles a single symbol from the symbol-file, building symbols |
2777 | into a GDB symtab. It takes these arguments and an implicit argument. | |
2778 | ||
2779 | TYPE is the type field of the ".stab" symbol entry. | |
2780 | DESC is the desc field of the ".stab" entry. | |
2781 | VALU is the value field of the ".stab" entry. | |
2782 | NAME is the symbol name, in our address space. | |
2783 | SECTION_OFFSETS is a set of amounts by which the sections of this object | |
c5aa993b | 2784 | file were relocated when it was loaded into memory. |
b8fbeb18 EZ |
2785 | Note that these section_offsets are not the |
2786 | objfile->section_offsets but the pst->section_offsets. | |
c5aa993b JM |
2787 | All symbols that refer |
2788 | to memory locations need to be offset by these amounts. | |
c906108c | 2789 | OBJFILE is the object file from which we are reading symbols. |
c5aa993b | 2790 | It is used in end_symtab. */ |
c906108c SS |
2791 | |
2792 | void | |
fba45db2 KB |
2793 | process_one_symbol (int type, int desc, CORE_ADDR valu, char *name, |
2794 | struct section_offsets *section_offsets, | |
2795 | struct objfile *objfile) | |
c906108c SS |
2796 | { |
2797 | #ifdef SUN_FIXED_LBRAC_BUG | |
2798 | /* If SUN_FIXED_LBRAC_BUG is defined, then it tells us whether we need | |
2799 | to correct the address of N_LBRAC's. If it is not defined, then | |
2800 | we never need to correct the addresses. */ | |
2801 | ||
2802 | /* This records the last pc address we've seen. We depend on there being | |
2803 | an SLINE or FUN or SO before the first LBRAC, since the variable does | |
2804 | not get reset in between reads of different symbol files. */ | |
2805 | static CORE_ADDR last_pc_address; | |
2806 | #endif | |
2807 | ||
52f0bd74 | 2808 | struct context_stack *new; |
c906108c SS |
2809 | /* This remembers the address of the start of a function. It is used |
2810 | because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries are | |
2811 | relative to the current function's start address. On systems | |
2812 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, and is | |
2813 | used to relocate these symbol types rather than SECTION_OFFSETS. */ | |
2814 | static CORE_ADDR function_start_offset; | |
2815 | ||
a1b9830c DJ |
2816 | /* This holds the address of the start of a function, without the system |
2817 | peculiarities of function_start_offset. */ | |
2818 | static CORE_ADDR last_function_start; | |
2819 | ||
54c7009d EZ |
2820 | /* If this is nonzero, we've seen an N_SLINE since the start of the |
2821 | current function. We use this to tell us to move the first sline | |
2822 | to the beginning of the function regardless of what its given | |
2823 | value is. */ | |
a1b9830c DJ |
2824 | static int sline_found_in_function = 1; |
2825 | ||
c906108c SS |
2826 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this source |
2827 | file. Used to detect the SunPRO solaris compiler. */ | |
2828 | static int n_opt_found; | |
2829 | ||
2830 | /* The stab type used for the definition of the last function. | |
2831 | N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */ | |
2832 | static int function_stab_type = 0; | |
2833 | ||
2834 | if (!block_address_function_relative) | |
2835 | /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the | |
2836 | function start address, so just use the text offset. */ | |
b8fbeb18 | 2837 | function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2838 | |
2839 | /* Something is wrong if we see real data before | |
2840 | seeing a source file name. */ | |
2841 | ||
c5aa993b | 2842 | if (last_source_file == NULL && type != (unsigned char) N_SO) |
c906108c SS |
2843 | { |
2844 | /* Ignore any symbols which appear before an N_SO symbol. | |
c5aa993b JM |
2845 | Currently no one puts symbols there, but we should deal |
2846 | gracefully with the case. A complain()t might be in order, | |
2847 | but this should not be an error (). */ | |
c906108c SS |
2848 | return; |
2849 | } | |
2850 | ||
2851 | switch (type) | |
2852 | { | |
2853 | case N_FUN: | |
2854 | case N_FNAME: | |
2855 | ||
2856 | if (*name == '\000') | |
2857 | { | |
2858 | /* This N_FUN marks the end of a function. This closes off the | |
2859 | current block. */ | |
0c5e171a KD |
2860 | |
2861 | if (context_stack_depth <= 0) | |
2862 | { | |
23136709 | 2863 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2864 | break; |
2865 | } | |
2866 | ||
6b37567a JJ |
2867 | /* The following check is added before recording line 0 at |
2868 | end of function so as to handle hand-generated stabs | |
2869 | which may have an N_FUN stabs at the end of the function, but | |
2870 | no N_SLINE stabs. */ | |
2871 | if (sline_found_in_function) | |
2872 | record_line (current_subfile, 0, last_function_start + valu); | |
2873 | ||
c906108c SS |
2874 | within_function = 0; |
2875 | new = pop_context (); | |
2876 | ||
2877 | /* Make a block for the local symbols within. */ | |
2878 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2879 | new->start_addr, new->start_addr + valu, | |
2880 | objfile); | |
2881 | ||
2882 | /* May be switching to an assembler file which may not be using | |
2883 | block relative stabs, so reset the offset. */ | |
2884 | if (block_address_function_relative) | |
2885 | function_start_offset = 0; | |
2886 | ||
2887 | break; | |
2888 | } | |
2889 | ||
a1b9830c DJ |
2890 | sline_found_in_function = 0; |
2891 | ||
c906108c | 2892 | /* Relocate for dynamic loading */ |
b8fbeb18 | 2893 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
181c1381 | 2894 | valu = SMASH_TEXT_ADDRESS (valu); |
a1b9830c DJ |
2895 | last_function_start = valu; |
2896 | ||
c906108c SS |
2897 | goto define_a_symbol; |
2898 | ||
2899 | case N_LBRAC: | |
2900 | /* This "symbol" just indicates the start of an inner lexical | |
c5aa993b | 2901 | context within a function. */ |
c906108c SS |
2902 | |
2903 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2904 | if (n_opt_found && desc == 1) | |
2905 | break; | |
2906 | ||
2907 | if (block_address_function_relative) | |
2908 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
2909 | valu += function_start_offset; | |
2910 | else | |
2911 | /* On most machines, the block addresses are relative to the | |
2912 | N_SO, the linker did not relocate them (sigh). */ | |
2913 | valu += last_source_start_addr; | |
2914 | ||
2915 | #ifdef SUN_FIXED_LBRAC_BUG | |
c5aa993b JM |
2916 | if (!SUN_FIXED_LBRAC_BUG && valu < last_pc_address) |
2917 | { | |
2918 | /* Patch current LBRAC pc value to match last handy pc value */ | |
23136709 | 2919 | complaint (&symfile_complaints, "bad block start address patched"); |
c5aa993b JM |
2920 | valu = last_pc_address; |
2921 | } | |
c906108c SS |
2922 | #endif |
2923 | new = push_context (desc, valu); | |
2924 | break; | |
2925 | ||
2926 | case N_RBRAC: | |
2927 | /* This "symbol" just indicates the end of an inner lexical | |
c5aa993b | 2928 | context that was started with N_LBRAC. */ |
c906108c SS |
2929 | |
2930 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2931 | if (n_opt_found && desc == 1) | |
2932 | break; | |
2933 | ||
2934 | if (block_address_function_relative) | |
2935 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
2936 | valu += function_start_offset; | |
2937 | else | |
2938 | /* On most machines, the block addresses are relative to the | |
2939 | N_SO, the linker did not relocate them (sigh). */ | |
2940 | valu += last_source_start_addr; | |
2941 | ||
0c5e171a KD |
2942 | if (context_stack_depth <= 0) |
2943 | { | |
23136709 | 2944 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2945 | break; |
2946 | } | |
2947 | ||
c5aa993b | 2948 | new = pop_context (); |
c906108c | 2949 | if (desc != new->depth) |
23136709 | 2950 | lbrac_mismatch_complaint (symnum); |
c906108c SS |
2951 | |
2952 | /* Some compilers put the variable decls inside of an | |
2953 | LBRAC/RBRAC block. This macro should be nonzero if this | |
c5aa993b JM |
2954 | is true. DESC is N_DESC from the N_RBRAC symbol. |
2955 | GCC_P is true if we've detected the GCC_COMPILED_SYMBOL | |
2956 | or the GCC2_COMPILED_SYMBOL. */ | |
c906108c SS |
2957 | #if !defined (VARIABLES_INSIDE_BLOCK) |
2958 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 0 | |
2959 | #endif | |
2960 | ||
2961 | /* Can only use new->locals as local symbols here if we're in | |
2962 | gcc or on a machine that puts them before the lbrack. */ | |
c5aa993b | 2963 | if (!VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)) |
1f077a3e KB |
2964 | { |
2965 | if (local_symbols != NULL) | |
2966 | { | |
2967 | /* GCC development snapshots from March to December of | |
2968 | 2000 would output N_LSYM entries after N_LBRAC | |
2969 | entries. As a consequence, these symbols are simply | |
2970 | discarded. Complain if this is the case. Note that | |
2971 | there are some compilers which legitimately put local | |
2972 | symbols within an LBRAC/RBRAC block; this complaint | |
2973 | might also help sort out problems in which | |
2974 | VARIABLES_INSIDE_BLOCK is incorrectly defined. */ | |
23136709 KB |
2975 | complaint (&symfile_complaints, |
2976 | "misplaced N_LBRAC entry; discarding local symbols which have no enclosing block"); | |
1f077a3e KB |
2977 | } |
2978 | local_symbols = new->locals; | |
2979 | } | |
c906108c SS |
2980 | |
2981 | if (context_stack_depth | |
c5aa993b | 2982 | > !VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)) |
c906108c SS |
2983 | { |
2984 | /* This is not the outermost LBRAC...RBRAC pair in the function, | |
2985 | its local symbols preceded it, and are the ones just recovered | |
2986 | from the context stack. Define the block for them (but don't | |
2987 | bother if the block contains no symbols. Should we complain | |
2988 | on blocks without symbols? I can't think of any useful purpose | |
2989 | for them). */ | |
2990 | if (local_symbols != NULL) | |
2991 | { | |
2992 | /* Muzzle a compiler bug that makes end < start. (which | |
c5aa993b | 2993 | compilers? Is this ever harmful?). */ |
c906108c SS |
2994 | if (new->start_addr > valu) |
2995 | { | |
23136709 KB |
2996 | complaint (&symfile_complaints, |
2997 | "block start larger than block end"); | |
c906108c SS |
2998 | new->start_addr = valu; |
2999 | } | |
3000 | /* Make a block for the local symbols within. */ | |
3001 | finish_block (0, &local_symbols, new->old_blocks, | |
3002 | new->start_addr, valu, objfile); | |
3003 | } | |
3004 | } | |
3005 | else | |
3006 | { | |
3007 | /* This is the outermost LBRAC...RBRAC pair. There is no | |
3008 | need to do anything; leave the symbols that preceded it | |
3009 | to be attached to the function's own block. We need to | |
3010 | indicate that we just moved outside of the function. */ | |
3011 | within_function = 0; | |
3012 | } | |
3013 | ||
c5aa993b | 3014 | if (VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)) |
c906108c SS |
3015 | /* Now pop locals of block just finished. */ |
3016 | local_symbols = new->locals; | |
3017 | break; | |
3018 | ||
3019 | case N_FN: | |
3020 | case N_FN_SEQ: | |
3021 | /* This kind of symbol indicates the start of an object file. */ | |
3022 | /* Relocate for dynamic loading */ | |
b8fbeb18 | 3023 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3024 | break; |
3025 | ||
3026 | case N_SO: | |
3027 | /* This type of symbol indicates the start of data | |
c5aa993b JM |
3028 | for one source file. |
3029 | Finish the symbol table of the previous source file | |
3030 | (if any) and start accumulating a new symbol table. */ | |
c906108c | 3031 | /* Relocate for dynamic loading */ |
b8fbeb18 | 3032 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3033 | |
3034 | n_opt_found = 0; | |
3035 | ||
3036 | #ifdef SUN_FIXED_LBRAC_BUG | |
3037 | last_pc_address = valu; /* Save for SunOS bug circumcision */ | |
3038 | #endif | |
3039 | ||
3040 | #ifdef PCC_SOL_BROKEN | |
3041 | /* pcc bug, occasionally puts out SO for SOL. */ | |
3042 | if (context_stack_depth > 0) | |
3043 | { | |
3044 | start_subfile (name, NULL); | |
3045 | break; | |
3046 | } | |
3047 | #endif | |
3048 | if (last_source_file) | |
3049 | { | |
3050 | /* Check if previous symbol was also an N_SO (with some | |
3051 | sanity checks). If so, that one was actually the directory | |
3052 | name, and the current one is the real file name. | |
c5aa993b | 3053 | Patch things up. */ |
c906108c SS |
3054 | if (previous_stab_code == (unsigned char) N_SO) |
3055 | { | |
3056 | patch_subfile_names (current_subfile, name); | |
3057 | break; /* Ignore repeated SOs */ | |
3058 | } | |
b8fbeb18 | 3059 | end_symtab (valu, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3060 | end_stabs (); |
3061 | } | |
3062 | ||
3063 | /* Null name means this just marks the end of text for this .o file. | |
c5aa993b | 3064 | Don't start a new symtab in this case. */ |
c906108c SS |
3065 | if (*name == '\000') |
3066 | break; | |
3067 | ||
3068 | if (block_address_function_relative) | |
c5aa993b | 3069 | function_start_offset = 0; |
c906108c SS |
3070 | |
3071 | start_stabs (); | |
3072 | start_symtab (name, NULL, valu); | |
3073 | record_debugformat ("stabs"); | |
3074 | break; | |
3075 | ||
3076 | case N_SOL: | |
3077 | /* This type of symbol indicates the start of data for | |
c5aa993b JM |
3078 | a sub-source-file, one whose contents were copied or |
3079 | included in the compilation of the main source file | |
3080 | (whose name was given in the N_SO symbol.) */ | |
c906108c | 3081 | /* Relocate for dynamic loading */ |
b8fbeb18 | 3082 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3083 | start_subfile (name, current_subfile->dirname); |
3084 | break; | |
3085 | ||
3086 | case N_BINCL: | |
3087 | push_subfile (); | |
3088 | add_new_header_file (name, valu); | |
3089 | start_subfile (name, current_subfile->dirname); | |
3090 | break; | |
3091 | ||
3092 | case N_EINCL: | |
3093 | start_subfile (pop_subfile (), current_subfile->dirname); | |
3094 | break; | |
3095 | ||
3096 | case N_EXCL: | |
3097 | add_old_header_file (name, valu); | |
3098 | break; | |
3099 | ||
3100 | case N_SLINE: | |
3101 | /* This type of "symbol" really just records | |
c5aa993b JM |
3102 | one line-number -- core-address correspondence. |
3103 | Enter it in the line list for this symbol table. */ | |
c906108c SS |
3104 | |
3105 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ | |
3106 | valu += function_start_offset; | |
3107 | ||
3108 | #ifdef SUN_FIXED_LBRAC_BUG | |
3109 | last_pc_address = valu; /* Save for SunOS bug circumcision */ | |
3110 | #endif | |
a1b9830c DJ |
3111 | /* If this is the first SLINE note in the function, record it at |
3112 | the start of the function instead of at the listed location. */ | |
3113 | if (within_function && sline_found_in_function == 0) | |
3114 | { | |
3115 | record_line (current_subfile, desc, last_function_start); | |
3116 | sline_found_in_function = 1; | |
3117 | } | |
3118 | else | |
3119 | record_line (current_subfile, desc, valu); | |
c906108c SS |
3120 | break; |
3121 | ||
3122 | case N_BCOMM: | |
3123 | common_block_start (name, objfile); | |
3124 | break; | |
3125 | ||
3126 | case N_ECOMM: | |
3127 | common_block_end (objfile); | |
3128 | break; | |
3129 | ||
c5aa993b JM |
3130 | /* The following symbol types need to have the appropriate offset added |
3131 | to their value; then we process symbol definitions in the name. */ | |
c906108c SS |
3132 | |
3133 | case N_STSYM: /* Static symbol in data seg */ | |
3134 | case N_LCSYM: /* Static symbol in BSS seg */ | |
3135 | case N_ROSYM: /* Static symbol in Read-only data seg */ | |
c5aa993b JM |
3136 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
3137 | Solaris2's stabs-in-elf makes *most* symbols relative | |
3138 | but leaves a few absolute (at least for Solaris 2.1 and version | |
3139 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on the fence. | |
3140 | .stab "foo:S...",N_STSYM is absolute (ld relocates it) | |
3141 | .stab "foo:V...",N_STSYM is relative (section base subtracted). | |
3142 | This leaves us no choice but to search for the 'S' or 'V'... | |
3143 | (or pass the whole section_offsets stuff down ONE MORE function | |
3144 | call level, which we really don't want to do). */ | |
c906108c SS |
3145 | { |
3146 | char *p; | |
3147 | ||
3148 | /* .o files and NLMs have non-zero text seg offsets, but don't need | |
3149 | their static syms offset in this fashion. XXX - This is really a | |
3150 | crock that should be fixed in the solib handling code so that I | |
3151 | don't have to work around it here. */ | |
3152 | ||
3153 | if (!symfile_relocatable) | |
3154 | { | |
3155 | p = strchr (name, ':'); | |
3156 | if (p != 0 && p[1] == 'S') | |
3157 | { | |
3158 | /* The linker relocated it. We don't want to add an | |
3159 | elfstab_offset_sections-type offset, but we *do* want | |
3160 | to add whatever solib.c passed to symbol_file_add as | |
3161 | addr (this is known to affect SunOS4, and I suspect ELF | |
3162 | too). Since elfstab_offset_sections currently does not | |
3163 | muck with the text offset (there is no Ttext.text | |
3164 | symbol), we can get addr from the text offset. If | |
3165 | elfstab_offset_sections ever starts dealing with the | |
3166 | text offset, and we still need to do this, we need to | |
3167 | invent a SECT_OFF_ADDR_KLUDGE or something. */ | |
b8fbeb18 | 3168 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3169 | goto define_a_symbol; |
3170 | } | |
3171 | } | |
3172 | /* Since it's not the kludge case, re-dispatch to the right handler. */ | |
c5aa993b JM |
3173 | switch (type) |
3174 | { | |
3175 | case N_STSYM: | |
3176 | goto case_N_STSYM; | |
3177 | case N_LCSYM: | |
3178 | goto case_N_LCSYM; | |
3179 | case N_ROSYM: | |
3180 | goto case_N_ROSYM; | |
3181 | default: | |
e1e9e218 | 3182 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c5aa993b | 3183 | } |
c906108c SS |
3184 | } |
3185 | ||
3186 | case_N_STSYM: /* Static symbol in data seg */ | |
3187 | case N_DSLINE: /* Source line number, data seg */ | |
b8fbeb18 | 3188 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3189 | goto define_a_symbol; |
3190 | ||
3191 | case_N_LCSYM: /* Static symbol in BSS seg */ | |
3192 | case N_BSLINE: /* Source line number, bss seg */ | |
c5aa993b | 3193 | /* N_BROWS: overlaps with N_BSLINE */ |
b8fbeb18 | 3194 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3195 | goto define_a_symbol; |
3196 | ||
3197 | case_N_ROSYM: /* Static symbol in Read-only data seg */ | |
b8fbeb18 | 3198 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA (objfile)); |
c906108c SS |
3199 | goto define_a_symbol; |
3200 | ||
3201 | case N_ENTRY: /* Alternate entry point */ | |
3202 | /* Relocate for dynamic loading */ | |
b8fbeb18 | 3203 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3204 | goto define_a_symbol; |
3205 | ||
c5aa993b JM |
3206 | /* The following symbol types we don't know how to process. Handle |
3207 | them in a "default" way, but complain to people who care. */ | |
c906108c SS |
3208 | default: |
3209 | case N_CATCH: /* Exception handler catcher */ | |
3210 | case N_EHDECL: /* Exception handler name */ | |
3211 | case N_PC: /* Global symbol in Pascal */ | |
c5aa993b JM |
3212 | case N_M2C: /* Modula-2 compilation unit */ |
3213 | /* N_MOD2: overlaps with N_EHDECL */ | |
c906108c SS |
3214 | case N_SCOPE: /* Modula-2 scope information */ |
3215 | case N_ECOML: /* End common (local name) */ | |
3216 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
3217 | case N_NBDATA: | |
3218 | case N_NBBSS: | |
3219 | case N_NBSTS: | |
3220 | case N_NBLCS: | |
23136709 | 3221 | unknown_symtype_complaint (local_hex_string (type)); |
c906108c SS |
3222 | /* FALLTHROUGH */ |
3223 | ||
c5aa993b JM |
3224 | /* The following symbol types don't need the address field relocated, |
3225 | since it is either unused, or is absolute. */ | |
c906108c SS |
3226 | define_a_symbol: |
3227 | case N_GSYM: /* Global variable */ | |
3228 | case N_NSYMS: /* Number of symbols (ultrix) */ | |
3229 | case N_NOMAP: /* No map? (ultrix) */ | |
3230 | case N_RSYM: /* Register variable */ | |
3231 | case N_DEFD: /* Modula-2 GNU module dependency */ | |
3232 | case N_SSYM: /* Struct or union element */ | |
3233 | case N_LSYM: /* Local symbol in stack */ | |
3234 | case N_PSYM: /* Parameter variable */ | |
3235 | case N_LENG: /* Length of preceding symbol type */ | |
3236 | if (name) | |
3237 | { | |
3238 | int deftype; | |
3239 | char *colon_pos = strchr (name, ':'); | |
3240 | if (colon_pos == NULL) | |
3241 | deftype = '\0'; | |
3242 | else | |
3243 | deftype = colon_pos[1]; | |
3244 | ||
3245 | switch (deftype) | |
3246 | { | |
3247 | case 'f': | |
3248 | case 'F': | |
3249 | function_stab_type = type; | |
3250 | ||
3251 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
3252 | /* Deal with the SunPRO 3.0 compiler which omits the address | |
c5aa993b | 3253 | from N_FUN symbols. */ |
c906108c | 3254 | if (type == N_FUN |
b8fbeb18 | 3255 | && valu == ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))) |
9a058a09 KB |
3256 | { |
3257 | CORE_ADDR minsym_valu = | |
3258 | find_stab_function_addr (name, last_source_file, objfile); | |
3259 | ||
3260 | /* find_stab_function_addr will return 0 if the minimal | |
3261 | symbol wasn't found. (Unfortunately, this might also | |
3262 | be a valid address.) Anyway, if it *does* return 0, | |
3263 | it is likely that the value was set correctly to begin | |
3264 | with... */ | |
3265 | if (minsym_valu != 0) | |
3266 | valu = minsym_valu; | |
3267 | } | |
c906108c SS |
3268 | #endif |
3269 | ||
3270 | #ifdef SUN_FIXED_LBRAC_BUG | |
3271 | /* The Sun acc compiler, under SunOS4, puts out | |
c5aa993b JM |
3272 | functions with N_GSYM or N_STSYM. The problem is |
3273 | that the address of the symbol is no good (for N_GSYM | |
3274 | it doesn't even attept an address; for N_STSYM it | |
3275 | puts out an address but then it gets relocated | |
3276 | relative to the data segment, not the text segment). | |
3277 | Currently we can't fix this up later as we do for | |
3278 | some types of symbol in scan_file_globals. | |
3279 | Fortunately we do have a way of finding the address - | |
3280 | we know that the value in last_pc_address is either | |
3281 | the one we want (if we're dealing with the first | |
3282 | function in an object file), or somewhere in the | |
3283 | previous function. This means that we can use the | |
3284 | minimal symbol table to get the address. */ | |
c906108c SS |
3285 | |
3286 | /* Starting with release 3.0, the Sun acc compiler, | |
c5aa993b JM |
3287 | under SunOS4, puts out functions with N_FUN and a value |
3288 | of zero. This gets relocated to the start of the text | |
3289 | segment of the module, which is no good either. | |
3290 | Under SunOS4 we can deal with this as N_SLINE and N_SO | |
3291 | entries contain valid absolute addresses. | |
3292 | Release 3.0 acc also puts out N_OPT entries, which makes | |
3293 | it possible to discern acc from cc or gcc. */ | |
c906108c SS |
3294 | |
3295 | if (type == N_GSYM || type == N_STSYM | |
3296 | || (type == N_FUN | |
3297 | && n_opt_found && !block_address_function_relative)) | |
3298 | { | |
3299 | struct minimal_symbol *m; | |
3300 | int l = colon_pos - name; | |
3301 | ||
3302 | m = lookup_minimal_symbol_by_pc (last_pc_address); | |
22abf04a DC |
3303 | if (m && STREQN (DEPRECATED_SYMBOL_NAME (m), name, l) |
3304 | && DEPRECATED_SYMBOL_NAME (m)[l] == '\0') | |
c906108c SS |
3305 | /* last_pc_address was in this function */ |
3306 | valu = SYMBOL_VALUE (m); | |
22abf04a DC |
3307 | else if (m && DEPRECATED_SYMBOL_NAME (m + 1) |
3308 | && STREQN (DEPRECATED_SYMBOL_NAME (m + 1), name, l) | |
3309 | && DEPRECATED_SYMBOL_NAME (m + 1)[l] == '\0') | |
c906108c | 3310 | /* last_pc_address was in last function */ |
c5aa993b | 3311 | valu = SYMBOL_VALUE (m + 1); |
c906108c SS |
3312 | else |
3313 | /* Not found - use last_pc_address (for finish_block) */ | |
3314 | valu = last_pc_address; | |
3315 | } | |
3316 | ||
3317 | last_pc_address = valu; /* Save for SunOS bug circumcision */ | |
3318 | #endif | |
3319 | ||
3320 | if (block_address_function_relative) | |
3321 | /* For Solaris 2.0 compilers, the block addresses and | |
3322 | N_SLINE's are relative to the start of the | |
3323 | function. On normal systems, and when using gcc on | |
3324 | Solaris 2.0, these addresses are just absolute, or | |
3325 | relative to the N_SO, depending on | |
3326 | BLOCK_ADDRESS_ABSOLUTE. */ | |
c5aa993b | 3327 | function_start_offset = valu; |
c906108c SS |
3328 | |
3329 | within_function = 1; | |
c3f6f71d JM |
3330 | |
3331 | if (context_stack_depth > 1) | |
3332 | { | |
23136709 KB |
3333 | complaint (&symfile_complaints, |
3334 | "unmatched N_LBRAC before symtab pos %d", symnum); | |
c3f6f71d JM |
3335 | break; |
3336 | } | |
3337 | ||
c906108c SS |
3338 | if (context_stack_depth > 0) |
3339 | { | |
3340 | new = pop_context (); | |
3341 | /* Make a block for the local symbols within. */ | |
3342 | finish_block (new->name, &local_symbols, new->old_blocks, | |
3343 | new->start_addr, valu, objfile); | |
3344 | } | |
c906108c SS |
3345 | |
3346 | new = push_context (0, valu); | |
3347 | new->name = define_symbol (valu, name, desc, type, objfile); | |
3348 | break; | |
3349 | ||
3350 | default: | |
3351 | define_symbol (valu, name, desc, type, objfile); | |
3352 | break; | |
3353 | } | |
3354 | } | |
3355 | break; | |
3356 | ||
c5aa993b JM |
3357 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
3358 | for a bunch of other flags, too. Someday we may parse their | |
3359 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
3360 | case N_OPT: /* Solaris 2: Compiler options */ | |
c906108c SS |
3361 | if (name) |
3362 | { | |
3363 | if (STREQ (name, GCC2_COMPILED_FLAG_SYMBOL)) | |
3364 | { | |
3365 | processing_gcc_compilation = 2; | |
8052a17a JM |
3366 | #if 0 /* Works, but is experimental. -fnf */ |
3367 | /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't | |
3368 | know whether it will use the old style or v3 mangling. */ | |
c906108c SS |
3369 | if (AUTO_DEMANGLING) |
3370 | { | |
3371 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING); | |
3372 | } | |
3373 | #endif | |
3374 | } | |
3375 | else | |
3376 | n_opt_found = 1; | |
3377 | } | |
3378 | break; | |
3379 | ||
51cc5b07 AC |
3380 | case N_MAIN: /* Name of main routine. */ |
3381 | /* FIXME: If one has a symbol file with N_MAIN and then replaces | |
3382 | it with a symbol file with "main" and without N_MAIN. I'm | |
3383 | not sure exactly what rule to follow but probably something | |
3384 | like: N_MAIN takes precedence over "main" no matter what | |
3385 | objfile it is in; If there is more than one N_MAIN, choose | |
3386 | the one in the symfile_objfile; If there is more than one | |
3387 | N_MAIN within a given objfile, complain() and choose | |
3388 | arbitrarily. (kingdon) */ | |
3389 | if (name != NULL) | |
3390 | set_main_name (name); | |
3391 | break; | |
3392 | ||
c5aa993b JM |
3393 | /* The following symbol types can be ignored. */ |
3394 | case N_OBJ: /* Solaris 2: Object file dir and name */ | |
3395 | /* N_UNDF: Solaris 2: file separator mark */ | |
3396 | /* N_UNDF: -- we will never encounter it, since we only process one | |
3397 | file's symbols at once. */ | |
c906108c | 3398 | case N_ENDM: /* Solaris 2: End of module */ |
c906108c SS |
3399 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
3400 | break; | |
3401 | } | |
3402 | ||
3403 | /* '#' is a GNU C extension to allow one symbol to refer to another | |
3404 | related symbol. | |
3405 | ||
3406 | Generally this is used so that an alias can refer to its main | |
c5aa993b | 3407 | symbol. */ |
c906108c SS |
3408 | if (name[0] == '#') |
3409 | { | |
3410 | /* Initialize symbol reference names and determine if this is | |
3411 | a definition. If symbol reference is being defined, go | |
3412 | ahead and add it. Otherwise, just return sym. */ | |
3413 | ||
3414 | char *s = name; | |
3415 | int refnum; | |
3416 | ||
3417 | /* If this stab defines a new reference ID that is not on the | |
c5aa993b | 3418 | reference list, then put it on the reference list. |
c906108c | 3419 | |
c5aa993b JM |
3420 | We go ahead and advance NAME past the reference, even though |
3421 | it is not strictly necessary at this time. */ | |
c906108c SS |
3422 | refnum = symbol_reference_defined (&s); |
3423 | if (refnum >= 0) | |
3424 | if (!ref_search (refnum)) | |
3425 | ref_add (refnum, 0, name, valu); | |
3426 | name = s; | |
3427 | } | |
3428 | ||
3429 | ||
3430 | previous_stab_code = type; | |
3431 | } | |
3432 | \f | |
3433 | /* FIXME: The only difference between this and elfstab_build_psymtabs | |
3434 | is the call to install_minimal_symbols for elf, and the support for | |
3435 | split sections. If the differences are really that small, the code | |
3436 | should be shared. */ | |
3437 | ||
3438 | /* Scan and build partial symbols for an coff symbol file. | |
3439 | The coff file has already been processed to get its minimal symbols. | |
3440 | ||
3441 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3442 | rolled into one. | |
3443 | ||
3444 | OBJFILE is the object file we are reading symbols from. | |
3445 | ADDR is the address relative to which the symbols are (e.g. | |
3446 | the base address of the text segment). | |
3447 | MAINLINE is true if we are reading the main symbol | |
3448 | table (as opposed to a shared lib or dynamically loaded file). | |
3449 | TEXTADDR is the address of the text section. | |
3450 | TEXTSIZE is the size of the text section. | |
3451 | STABSECTS is the list of .stab sections in OBJFILE. | |
3452 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
3453 | .stabstr section exists. | |
3454 | ||
3455 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
3456 | adjusted for coff details. */ | |
3457 | ||
3458 | void | |
fba45db2 KB |
3459 | coffstab_build_psymtabs (struct objfile *objfile, int mainline, |
3460 | CORE_ADDR textaddr, unsigned int textsize, | |
3461 | struct stab_section_list *stabsects, | |
3462 | file_ptr stabstroffset, unsigned int stabstrsize) | |
c906108c SS |
3463 | { |
3464 | int val; | |
3465 | bfd *sym_bfd = objfile->obfd; | |
3466 | char *name = bfd_get_filename (sym_bfd); | |
3467 | struct dbx_symfile_info *info; | |
3468 | unsigned int stabsize; | |
3469 | ||
3470 | /* There is already a dbx_symfile_info allocated by our caller. | |
3471 | It might even contain some info from the coff symtab to help us. */ | |
3472 | info = objfile->sym_stab_info; | |
3473 | ||
3474 | DBX_TEXT_ADDR (objfile) = textaddr; | |
3475 | DBX_TEXT_SIZE (objfile) = textsize; | |
3476 | ||
3477 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3478 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; |
c906108c | 3479 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
c5aa993b | 3480 | |
c906108c SS |
3481 | if (stabstrsize > bfd_get_size (sym_bfd)) |
3482 | error ("ridiculous string table size: %d bytes", stabstrsize); | |
3483 | DBX_STRINGTAB (objfile) = (char *) | |
c5aa993b JM |
3484 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize + 1); |
3485 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); | |
c906108c SS |
3486 | |
3487 | /* Now read in the string table in one big gulp. */ | |
3488 | ||
3489 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3490 | if (val < 0) | |
3491 | perror_with_name (name); | |
3a42e9d0 | 3492 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3493 | if (val != stabstrsize) |
3494 | perror_with_name (name); | |
3495 | ||
3496 | stabsread_new_init (); | |
3497 | buildsym_new_init (); | |
3498 | free_header_files (); | |
3499 | init_header_files (); | |
3500 | ||
3501 | processing_acc_compilation = 1; | |
3502 | ||
3503 | /* In a coff file, we've already installed the minimal symbols that came | |
3504 | from the coff (non-stab) symbol table, so always act like an | |
3505 | incremental load here. */ | |
3506 | if (stabsects->next == NULL) | |
3507 | { | |
3508 | stabsize = bfd_section_size (sym_bfd, stabsects->section); | |
3509 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
3510 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3511 | } | |
3512 | else | |
3513 | { | |
3514 | struct stab_section_list *stabsect; | |
3515 | ||
3516 | DBX_SYMCOUNT (objfile) = 0; | |
3517 | for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next) | |
3518 | { | |
3519 | stabsize = bfd_section_size (sym_bfd, stabsect->section); | |
3520 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); | |
3521 | } | |
3522 | ||
3523 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3524 | ||
3525 | symbuf_sections = stabsects->next; | |
3526 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section); | |
3527 | symbuf_read = 0; | |
3528 | } | |
3529 | ||
96baa820 | 3530 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3531 | } |
3532 | \f | |
3533 | /* Scan and build partial symbols for an ELF symbol file. | |
3534 | This ELF file has already been processed to get its minimal symbols, | |
3535 | and any DWARF symbols that were in it. | |
3536 | ||
3537 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3538 | rolled into one. | |
3539 | ||
3540 | OBJFILE is the object file we are reading symbols from. | |
3541 | ADDR is the address relative to which the symbols are (e.g. | |
3542 | the base address of the text segment). | |
3543 | MAINLINE is true if we are reading the main symbol | |
3544 | table (as opposed to a shared lib or dynamically loaded file). | |
086df311 | 3545 | STABSECT is the BFD section information for the .stab section. |
c906108c SS |
3546 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
3547 | .stabstr section exists. | |
3548 | ||
3549 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
3550 | adjusted for elf details. */ | |
3551 | ||
3552 | void | |
fba45db2 | 3553 | elfstab_build_psymtabs (struct objfile *objfile, int mainline, |
086df311 | 3554 | asection *stabsect, |
fba45db2 | 3555 | file_ptr stabstroffset, unsigned int stabstrsize) |
c906108c SS |
3556 | { |
3557 | int val; | |
3558 | bfd *sym_bfd = objfile->obfd; | |
3559 | char *name = bfd_get_filename (sym_bfd); | |
3560 | struct dbx_symfile_info *info; | |
086df311 | 3561 | struct cleanup *back_to = NULL; |
c906108c SS |
3562 | |
3563 | /* There is already a dbx_symfile_info allocated by our caller. | |
3564 | It might even contain some info from the ELF symtab to help us. */ | |
3565 | info = objfile->sym_stab_info; | |
3566 | ||
7a292a7a SS |
3567 | /* Find the first and last text address. dbx_symfile_read seems to |
3568 | want this. */ | |
3569 | find_text_range (sym_bfd, objfile); | |
c906108c SS |
3570 | |
3571 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3572 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; |
086df311 DJ |
3573 | DBX_SYMCOUNT (objfile) |
3574 | = bfd_section_size (objfile->obfd, stabsect) / DBX_SYMBOL_SIZE (objfile); | |
c906108c | 3575 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
086df311 DJ |
3576 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; |
3577 | DBX_STAB_SECTION (objfile) = stabsect; | |
c5aa993b | 3578 | |
c906108c SS |
3579 | if (stabstrsize > bfd_get_size (sym_bfd)) |
3580 | error ("ridiculous string table size: %d bytes", stabstrsize); | |
3581 | DBX_STRINGTAB (objfile) = (char *) | |
c5aa993b JM |
3582 | obstack_alloc (&objfile->psymbol_obstack, stabstrsize + 1); |
3583 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); | |
c906108c SS |
3584 | |
3585 | /* Now read in the string table in one big gulp. */ | |
3586 | ||
3587 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3588 | if (val < 0) | |
3589 | perror_with_name (name); | |
3a42e9d0 | 3590 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3591 | if (val != stabstrsize) |
3592 | perror_with_name (name); | |
3593 | ||
3594 | stabsread_new_init (); | |
3595 | buildsym_new_init (); | |
3596 | free_header_files (); | |
3597 | init_header_files (); | |
c906108c SS |
3598 | |
3599 | processing_acc_compilation = 1; | |
3600 | ||
086df311 DJ |
3601 | symbuf_read = 0; |
3602 | symbuf_left = bfd_section_size (objfile->obfd, stabsect); | |
3603 | stabs_data = symfile_relocate_debug_section (objfile->obfd, stabsect, NULL); | |
3604 | if (stabs_data) | |
3605 | back_to = make_cleanup (free_current_contents, (void *) &stabs_data); | |
3606 | ||
c906108c SS |
3607 | /* In an elf file, we've already installed the minimal symbols that came |
3608 | from the elf (non-stab) symbol table, so always act like an | |
7134143f DJ |
3609 | incremental load here. dbx_symfile_read should not generate any new |
3610 | minimal symbols, since we will have already read the ELF dynamic symbol | |
3611 | table and normal symbol entries won't be in the ".stab" section; but in | |
3612 | case it does, it will install them itself. */ | |
96baa820 | 3613 | dbx_symfile_read (objfile, 0); |
086df311 DJ |
3614 | |
3615 | if (back_to) | |
3616 | do_cleanups (back_to); | |
c906108c SS |
3617 | } |
3618 | \f | |
3619 | /* Scan and build partial symbols for a file with special sections for stabs | |
3620 | and stabstrings. The file has already been processed to get its minimal | |
3621 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
3622 | ||
3623 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3624 | rolled into one. | |
3625 | ||
3626 | OBJFILE is the object file we are reading symbols from. | |
3627 | ADDR is the address relative to which the symbols are (e.g. the base address | |
c5aa993b | 3628 | of the text segment). |
c906108c | 3629 | MAINLINE is true if we are reading the main symbol table (as opposed to a |
c5aa993b | 3630 | shared lib or dynamically loaded file). |
c906108c SS |
3631 | STAB_NAME is the name of the section that contains the stabs. |
3632 | STABSTR_NAME is the name of the section that contains the stab strings. | |
3633 | ||
3634 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read. */ | |
3635 | ||
3636 | void | |
fba45db2 KB |
3637 | stabsect_build_psymtabs (struct objfile *objfile, int mainline, char *stab_name, |
3638 | char *stabstr_name, char *text_name) | |
c906108c SS |
3639 | { |
3640 | int val; | |
3641 | bfd *sym_bfd = objfile->obfd; | |
3642 | char *name = bfd_get_filename (sym_bfd); | |
3643 | asection *stabsect; | |
3644 | asection *stabstrsect; | |
3645 | asection *text_sect; | |
3646 | ||
3647 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
3648 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
3649 | ||
3650 | if (!stabsect) | |
3651 | return; | |
3652 | ||
3653 | if (!stabstrsect) | |
3654 | error ("stabsect_build_psymtabs: Found stabs (%s), but not string section (%s)", | |
3655 | stab_name, stabstr_name); | |
3656 | ||
3657 | objfile->sym_stab_info = (struct dbx_symfile_info *) | |
3658 | xmalloc (sizeof (struct dbx_symfile_info)); | |
3659 | memset (objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); | |
3660 | ||
3661 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); | |
3662 | if (!text_sect) | |
3663 | error ("Can't find %s section in symbol file", text_name); | |
3664 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); | |
3665 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
3666 | ||
c5aa993b JM |
3667 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); |
3668 | DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect) | |
c906108c SS |
3669 | / DBX_SYMBOL_SIZE (objfile); |
3670 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect); | |
c5aa993b JM |
3671 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING INSIDE BFD DATA STRUCTURES */ |
3672 | ||
c906108c SS |
3673 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) |
3674 | error ("ridiculous string table size: %d bytes", DBX_STRINGTAB_SIZE (objfile)); | |
3675 | DBX_STRINGTAB (objfile) = (char *) | |
3676 | obstack_alloc (&objfile->psymbol_obstack, DBX_STRINGTAB_SIZE (objfile) + 1); | |
3677 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); | |
3678 | ||
3679 | /* Now read in the string table in one big gulp. */ | |
3680 | ||
c5aa993b JM |
3681 | val = bfd_get_section_contents (sym_bfd, /* bfd */ |
3682 | stabstrsect, /* bfd section */ | |
3683 | DBX_STRINGTAB (objfile), /* input buffer */ | |
3684 | 0, /* offset into section */ | |
3685 | DBX_STRINGTAB_SIZE (objfile)); /* amount to read */ | |
c906108c SS |
3686 | |
3687 | if (!val) | |
3688 | perror_with_name (name); | |
3689 | ||
3690 | stabsread_new_init (); | |
3691 | buildsym_new_init (); | |
3692 | free_header_files (); | |
3693 | init_header_files (); | |
c906108c SS |
3694 | |
3695 | /* Now, do an incremental load */ | |
3696 | ||
3697 | processing_acc_compilation = 1; | |
96baa820 | 3698 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3699 | } |
3700 | \f | |
3701 | static struct sym_fns aout_sym_fns = | |
3702 | { | |
3703 | bfd_target_aout_flavour, | |
c5aa993b JM |
3704 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
3705 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
3706 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ | |
3707 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ | |
96baa820 | 3708 | default_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
c5aa993b | 3709 | NULL /* next: pointer to next struct sym_fns */ |
c906108c SS |
3710 | }; |
3711 | ||
3712 | void | |
fba45db2 | 3713 | _initialize_dbxread (void) |
c906108c | 3714 | { |
c5aa993b | 3715 | add_symtab_fns (&aout_sym_fns); |
c906108c | 3716 | } |