Commit | Line | Data |
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c906108c | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
618f726f | 2 | Copyright (C) 1986-2016 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | /* This module provides three functions: dbx_symfile_init, | |
20 | which initializes to read a symbol file; dbx_new_init, which | |
21 | discards existing cached information when all symbols are being | |
22 | discarded; and dbx_symfile_read, which reads a symbol table | |
23 | from a file. | |
24 | ||
25 | dbx_symfile_read only does the minimum work necessary for letting the | |
26 | user "name" things symbolically; it does not read the entire symtab. | |
27 | Instead, it reads the external and static symbols and puts them in partial | |
28 | symbol tables. When more extensive information is requested of a | |
29 | file, the corresponding partial symbol table is mutated into a full | |
30 | fledged symbol table by going back and reading the symbols | |
31 | for real. dbx_psymtab_to_symtab() is the function that does this */ | |
32 | ||
33 | #include "defs.h" | |
1f04aa62 | 34 | #if defined(__CYGNUSCLIB__) |
c906108c SS |
35 | #include <sys/types.h> |
36 | #include <fcntl.h> | |
37 | #endif | |
38 | ||
04ea0df1 | 39 | #include "gdb_obstack.h" |
53ce3c39 | 40 | #include <sys/stat.h> |
c906108c SS |
41 | #include "symtab.h" |
42 | #include "breakpoint.h" | |
c906108c SS |
43 | #include "target.h" |
44 | #include "gdbcore.h" /* for bfd stuff */ | |
c5aa993b | 45 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
0ba1096a | 46 | #include "filenames.h" |
c906108c SS |
47 | #include "objfiles.h" |
48 | #include "buildsym.h" | |
49 | #include "stabsread.h" | |
50 | #include "gdb-stabs.h" | |
51 | #include "demangle.h" | |
c906108c | 52 | #include "complaints.h" |
015a42b4 | 53 | #include "cp-abi.h" |
df8a16a1 | 54 | #include "cp-support.h" |
ccefe4c4 | 55 | #include "psympriv.h" |
195a3f6c | 56 | #include "block.h" |
91f54576 | 57 | |
c906108c | 58 | #include "aout/aout64.h" |
0963b4bd MS |
59 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not |
60 | native, now. */ | |
c906108c | 61 | \f |
c5aa993b | 62 | |
d2f4b8fe TT |
63 | /* Key for dbx-associated data. */ |
64 | ||
65 | const struct objfile_data *dbx_objfile_data_key; | |
66 | ||
c906108c SS |
67 | /* We put a pointer to this structure in the read_symtab_private field |
68 | of the psymtab. */ | |
69 | ||
c5aa993b JM |
70 | struct symloc |
71 | { | |
c5aa993b JM |
72 | /* Offset within the file symbol table of first local symbol for this |
73 | file. */ | |
c906108c | 74 | |
c5aa993b | 75 | int ldsymoff; |
c906108c | 76 | |
c5aa993b JM |
77 | /* Length (in bytes) of the section of the symbol table devoted to |
78 | this file's symbols (actually, the section bracketed may contain | |
79 | more than just this file's symbols). If ldsymlen is 0, the only | |
80 | reason for this thing's existence is the dependency list. Nothing | |
81 | else will happen when it is read in. */ | |
c906108c | 82 | |
c5aa993b | 83 | int ldsymlen; |
c906108c | 84 | |
c5aa993b | 85 | /* The size of each symbol in the symbol file (in external form). */ |
c906108c | 86 | |
c5aa993b | 87 | int symbol_size; |
c906108c | 88 | |
c5aa993b JM |
89 | /* Further information needed to locate the symbols if they are in |
90 | an ELF file. */ | |
c906108c | 91 | |
c5aa993b JM |
92 | int symbol_offset; |
93 | int string_offset; | |
94 | int file_string_offset; | |
95 | }; | |
c906108c SS |
96 | |
97 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) | |
98 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
99 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) | |
100 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
101 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
102 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
103 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
c906108c | 104 | \f |
c5aa993b | 105 | |
91a81f69 TT |
106 | /* The objfile we are currently reading. */ |
107 | ||
dd707e8e | 108 | static struct objfile *dbxread_objfile; |
91a81f69 | 109 | |
0963b4bd | 110 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
111 | |
112 | static enum language psymtab_language = language_unknown; | |
113 | ||
c906108c SS |
114 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
115 | ||
116 | static bfd *symfile_bfd; | |
117 | ||
118 | /* The size of each symbol in the symbol file (in external form). | |
119 | This is set by dbx_symfile_read when building psymtabs, and by | |
120 | dbx_psymtab_to_symtab when building symtabs. */ | |
121 | ||
122 | static unsigned symbol_size; | |
123 | ||
0963b4bd | 124 | /* This is the offset of the symbol table in the executable file. */ |
c906108c SS |
125 | |
126 | static unsigned symbol_table_offset; | |
127 | ||
0963b4bd | 128 | /* This is the offset of the string table in the executable file. */ |
c906108c SS |
129 | |
130 | static unsigned string_table_offset; | |
131 | ||
132 | /* For elf+stab executables, the n_strx field is not a simple index | |
133 | into the string table. Instead, each .o file has a base offset in | |
134 | the string table, and the associated symbols contain offsets from | |
135 | this base. The following two variables contain the base offset for | |
0963b4bd | 136 | the current and next .o files. */ |
c906108c SS |
137 | |
138 | static unsigned int file_string_table_offset; | |
139 | static unsigned int next_file_string_table_offset; | |
140 | ||
141 | /* .o and NLM files contain unrelocated addresses which are based at | |
142 | 0. When non-zero, this flag disables some of the special cases for | |
0963b4bd | 143 | Solaris elf+stab text addresses at location 0. */ |
c906108c SS |
144 | |
145 | static int symfile_relocatable = 0; | |
146 | ||
147 | /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are | |
148 | relative to the function start address. */ | |
149 | ||
150 | static int block_address_function_relative = 0; | |
151 | \f | |
152 | /* The lowest text address we have yet encountered. This is needed | |
153 | because in an a.out file, there is no header field which tells us | |
154 | what address the program is actually going to be loaded at, so we | |
155 | need to make guesses based on the symbols (which *are* relocated to | |
156 | reflect the address it will be loaded at). */ | |
157 | ||
158 | static CORE_ADDR lowest_text_address; | |
159 | ||
160 | /* Non-zero if there is any line number info in the objfile. Prevents | |
8763cede | 161 | dbx_end_psymtab from discarding an otherwise empty psymtab. */ |
c906108c SS |
162 | |
163 | static int has_line_numbers; | |
164 | ||
165 | /* Complaints about the symbols we have encountered. */ | |
166 | ||
23136709 KB |
167 | static void |
168 | unknown_symtype_complaint (const char *arg1) | |
169 | { | |
e2e0b3e5 | 170 | complaint (&symfile_complaints, _("unknown symbol type %s"), arg1); |
23136709 | 171 | } |
c906108c | 172 | |
23136709 KB |
173 | static void |
174 | lbrac_mismatch_complaint (int arg1) | |
175 | { | |
176 | complaint (&symfile_complaints, | |
e2e0b3e5 | 177 | _("N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d"), arg1); |
23136709 | 178 | } |
c906108c | 179 | |
23136709 KB |
180 | static void |
181 | repeated_header_complaint (const char *arg1, int arg2) | |
182 | { | |
183 | complaint (&symfile_complaints, | |
3e43a32a MS |
184 | _("\"repeated\" header file %s not " |
185 | "previously seen, at symtab pos %d"), | |
23136709 KB |
186 | arg1, arg2); |
187 | } | |
1f077a3e | 188 | |
7a292a7a SS |
189 | /* find_text_range --- find start and end of loadable code sections |
190 | ||
191 | The find_text_range function finds the shortest address range that | |
192 | encloses all sections containing executable code, and stores it in | |
193 | objfile's text_addr and text_size members. | |
194 | ||
195 | dbx_symfile_read will use this to finish off the partial symbol | |
196 | table, in some cases. */ | |
197 | ||
198 | static void | |
c5aa993b | 199 | find_text_range (bfd * sym_bfd, struct objfile *objfile) |
7a292a7a SS |
200 | { |
201 | asection *sec; | |
202 | int found_any = 0; | |
b9179dbc EZ |
203 | CORE_ADDR start = 0; |
204 | CORE_ADDR end = 0; | |
c5aa993b | 205 | |
7a292a7a SS |
206 | for (sec = sym_bfd->sections; sec; sec = sec->next) |
207 | if (bfd_get_section_flags (sym_bfd, sec) & SEC_CODE) | |
208 | { | |
209 | CORE_ADDR sec_start = bfd_section_vma (sym_bfd, sec); | |
210 | CORE_ADDR sec_end = sec_start + bfd_section_size (sym_bfd, sec); | |
211 | ||
212 | if (found_any) | |
213 | { | |
c5aa993b JM |
214 | if (sec_start < start) |
215 | start = sec_start; | |
216 | if (sec_end > end) | |
217 | end = sec_end; | |
7a292a7a SS |
218 | } |
219 | else | |
220 | { | |
221 | start = sec_start; | |
222 | end = sec_end; | |
223 | } | |
224 | ||
225 | found_any = 1; | |
226 | } | |
227 | ||
c5aa993b | 228 | if (!found_any) |
8a3fe4f8 | 229 | error (_("Can't find any code sections in symbol file")); |
7a292a7a SS |
230 | |
231 | DBX_TEXT_ADDR (objfile) = start; | |
232 | DBX_TEXT_SIZE (objfile) = end - start; | |
233 | } | |
c5aa993b | 234 | \f |
7a292a7a SS |
235 | |
236 | ||
c906108c SS |
237 | /* During initial symbol readin, we need to have a structure to keep |
238 | track of which psymtabs have which bincls in them. This structure | |
239 | is used during readin to setup the list of dependencies within each | |
0963b4bd | 240 | partial symbol table. */ |
c906108c SS |
241 | |
242 | struct header_file_location | |
243 | { | |
244 | char *name; /* Name of header file */ | |
245 | int instance; /* See above */ | |
246 | struct partial_symtab *pst; /* Partial symtab that has the | |
0963b4bd | 247 | BINCL/EINCL defs for this file. */ |
c906108c SS |
248 | }; |
249 | ||
0963b4bd | 250 | /* The actual list and controling variables. */ |
c906108c SS |
251 | static struct header_file_location *bincl_list, *next_bincl; |
252 | static int bincls_allocated; | |
253 | ||
0963b4bd | 254 | /* Local function prototypes. */ |
c906108c | 255 | |
a14ed312 | 256 | extern void _initialize_dbxread (void); |
392a587b | 257 | |
5c80ed9d | 258 | static void read_ofile_symtab (struct objfile *, struct partial_symtab *); |
c906108c | 259 | |
257e7a09 YQ |
260 | static void dbx_read_symtab (struct partial_symtab *self, |
261 | struct objfile *objfile); | |
c906108c | 262 | |
5c80ed9d | 263 | static void dbx_psymtab_to_symtab_1 (struct objfile *, struct partial_symtab *); |
c906108c | 264 | |
8dddcb8f TT |
265 | static void read_dbx_dynamic_symtab (minimal_symbol_reader &reader, |
266 | struct objfile *objfile); | |
c906108c | 267 | |
8dddcb8f | 268 | static void read_dbx_symtab (minimal_symbol_reader &, struct objfile *); |
c906108c | 269 | |
a14ed312 | 270 | static void free_bincl_list (struct objfile *); |
c906108c | 271 | |
a14ed312 | 272 | static struct partial_symtab *find_corresponding_bincl_psymtab (char *, int); |
c906108c | 273 | |
a14ed312 | 274 | static void add_bincl_to_list (struct partial_symtab *, char *, int); |
c906108c | 275 | |
a14ed312 | 276 | static void init_bincl_list (int, struct objfile *); |
c906108c | 277 | |
a14ed312 | 278 | static char *dbx_next_symbol_text (struct objfile *); |
c906108c | 279 | |
a14ed312 | 280 | static void fill_symbuf (bfd *); |
c906108c | 281 | |
a14ed312 | 282 | static void dbx_symfile_init (struct objfile *); |
c906108c | 283 | |
a14ed312 | 284 | static void dbx_new_init (struct objfile *); |
c906108c | 285 | |
b15cc25c | 286 | static void dbx_symfile_read (struct objfile *, symfile_add_flags); |
c906108c | 287 | |
a14ed312 | 288 | static void dbx_symfile_finish (struct objfile *); |
c906108c | 289 | |
8dddcb8f TT |
290 | static void record_minimal_symbol (minimal_symbol_reader &, |
291 | const char *, CORE_ADDR, int, | |
bec71544 | 292 | struct objfile *); |
c906108c | 293 | |
a14ed312 | 294 | static void add_new_header_file (char *, int); |
c906108c | 295 | |
a14ed312 | 296 | static void add_old_header_file (char *, int); |
c906108c | 297 | |
a14ed312 | 298 | static void add_this_object_header_file (int); |
c906108c | 299 | |
a14ed312 KB |
300 | static struct partial_symtab *start_psymtab (struct objfile *, char *, |
301 | CORE_ADDR, int, | |
302 | struct partial_symbol **, | |
303 | struct partial_symbol **); | |
d4f3574e | 304 | |
0963b4bd | 305 | /* Free up old header file tables. */ |
c906108c | 306 | |
d3d55eeb | 307 | void |
fba45db2 | 308 | free_header_files (void) |
c906108c SS |
309 | { |
310 | if (this_object_header_files) | |
311 | { | |
b8c9b27d | 312 | xfree (this_object_header_files); |
c906108c SS |
313 | this_object_header_files = NULL; |
314 | } | |
315 | n_allocated_this_object_header_files = 0; | |
316 | } | |
317 | ||
0963b4bd | 318 | /* Allocate new header file tables. */ |
c906108c | 319 | |
d3d55eeb | 320 | void |
fba45db2 | 321 | init_header_files (void) |
c906108c SS |
322 | { |
323 | n_allocated_this_object_header_files = 10; | |
8d749320 | 324 | this_object_header_files = XNEWVEC (int, 10); |
c906108c SS |
325 | } |
326 | ||
327 | /* Add header file number I for this object file | |
328 | at the next successive FILENUM. */ | |
329 | ||
330 | static void | |
fba45db2 | 331 | add_this_object_header_file (int i) |
c906108c SS |
332 | { |
333 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
334 | { | |
335 | n_allocated_this_object_header_files *= 2; | |
336 | this_object_header_files | |
337 | = (int *) xrealloc ((char *) this_object_header_files, | |
c5aa993b | 338 | n_allocated_this_object_header_files * sizeof (int)); |
c906108c SS |
339 | } |
340 | ||
341 | this_object_header_files[n_this_object_header_files++] = i; | |
342 | } | |
343 | ||
344 | /* Add to this file an "old" header file, one already seen in | |
345 | a previous object file. NAME is the header file's name. | |
346 | INSTANCE is its instance code, to select among multiple | |
347 | symbol tables for the same header file. */ | |
348 | ||
349 | static void | |
fba45db2 | 350 | add_old_header_file (char *name, int instance) |
c906108c | 351 | { |
dd707e8e | 352 | struct header_file *p = HEADER_FILES (dbxread_objfile); |
52f0bd74 | 353 | int i; |
c906108c | 354 | |
dd707e8e | 355 | for (i = 0; i < N_HEADER_FILES (dbxread_objfile); i++) |
0ba1096a | 356 | if (filename_cmp (p[i].name, name) == 0 && instance == p[i].instance) |
c906108c SS |
357 | { |
358 | add_this_object_header_file (i); | |
359 | return; | |
360 | } | |
23136709 | 361 | repeated_header_complaint (name, symnum); |
c906108c SS |
362 | } |
363 | ||
364 | /* Add to this file a "new" header file: definitions for its types follow. | |
365 | NAME is the header file's name. | |
366 | Most often this happens only once for each distinct header file, | |
367 | but not necessarily. If it happens more than once, INSTANCE has | |
368 | a different value each time, and references to the header file | |
369 | use INSTANCE values to select among them. | |
370 | ||
371 | dbx output contains "begin" and "end" markers for each new header file, | |
372 | but at this level we just need to know which files there have been; | |
373 | so we record the file when its "begin" is seen and ignore the "end". */ | |
374 | ||
375 | static void | |
fba45db2 | 376 | add_new_header_file (char *name, int instance) |
c906108c | 377 | { |
52f0bd74 AC |
378 | int i; |
379 | struct header_file *hfile; | |
c906108c SS |
380 | |
381 | /* Make sure there is room for one more header file. */ | |
382 | ||
dd707e8e | 383 | i = N_ALLOCATED_HEADER_FILES (dbxread_objfile); |
c906108c | 384 | |
dd707e8e | 385 | if (N_HEADER_FILES (dbxread_objfile) == i) |
c906108c SS |
386 | { |
387 | if (i == 0) | |
388 | { | |
dd707e8e TT |
389 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = 10; |
390 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
c906108c SS |
391 | xmalloc (10 * sizeof (struct header_file)); |
392 | } | |
393 | else | |
394 | { | |
395 | i *= 2; | |
dd707e8e TT |
396 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = i; |
397 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
398 | xrealloc ((char *) HEADER_FILES (dbxread_objfile), | |
c906108c SS |
399 | (i * sizeof (struct header_file))); |
400 | } | |
401 | } | |
402 | ||
403 | /* Create an entry for this header file. */ | |
404 | ||
dd707e8e TT |
405 | i = N_HEADER_FILES (dbxread_objfile)++; |
406 | hfile = HEADER_FILES (dbxread_objfile) + i; | |
1b36a34b | 407 | hfile->name = xstrdup (name); |
c906108c SS |
408 | hfile->instance = instance; |
409 | hfile->length = 10; | |
8d749320 | 410 | hfile->vector = XCNEWVEC (struct type *, 10); |
c906108c SS |
411 | |
412 | add_this_object_header_file (i); | |
413 | } | |
414 | ||
415 | #if 0 | |
416 | static struct type ** | |
fba45db2 | 417 | explicit_lookup_type (int real_filenum, int index) |
c906108c | 418 | { |
dd707e8e | 419 | struct header_file *f = &HEADER_FILES (dbxread_objfile)[real_filenum]; |
c906108c SS |
420 | |
421 | if (index >= f->length) | |
422 | { | |
423 | f->length *= 2; | |
424 | f->vector = (struct type **) | |
425 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
426 | memset (&f->vector[f->length / 2], | |
c5aa993b | 427 | '\0', f->length * sizeof (struct type *) / 2); |
c906108c SS |
428 | } |
429 | return &f->vector[index]; | |
430 | } | |
431 | #endif | |
432 | \f | |
433 | static void | |
8dddcb8f TT |
434 | record_minimal_symbol (minimal_symbol_reader &reader, |
435 | const char *name, CORE_ADDR address, int type, | |
fba45db2 | 436 | struct objfile *objfile) |
c906108c SS |
437 | { |
438 | enum minimal_symbol_type ms_type; | |
439 | int section; | |
c906108c SS |
440 | |
441 | switch (type) | |
442 | { | |
443 | case N_TEXT | N_EXT: | |
444 | ms_type = mst_text; | |
b8fbeb18 | 445 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
446 | break; |
447 | case N_DATA | N_EXT: | |
448 | ms_type = mst_data; | |
b8fbeb18 | 449 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
450 | break; |
451 | case N_BSS | N_EXT: | |
452 | ms_type = mst_bss; | |
b8fbeb18 | 453 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
454 | break; |
455 | case N_ABS | N_EXT: | |
456 | ms_type = mst_abs; | |
457 | section = -1; | |
c906108c SS |
458 | break; |
459 | #ifdef N_SETV | |
460 | case N_SETV | N_EXT: | |
461 | ms_type = mst_data; | |
b8fbeb18 | 462 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
463 | break; |
464 | case N_SETV: | |
465 | /* I don't think this type actually exists; since a N_SETV is the result | |
c5aa993b JM |
466 | of going over many .o files, it doesn't make sense to have one |
467 | file local. */ | |
c906108c | 468 | ms_type = mst_file_data; |
b8fbeb18 | 469 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
470 | break; |
471 | #endif | |
472 | case N_TEXT: | |
473 | case N_NBTEXT: | |
474 | case N_FN: | |
475 | case N_FN_SEQ: | |
476 | ms_type = mst_file_text; | |
b8fbeb18 | 477 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
478 | break; |
479 | case N_DATA: | |
480 | ms_type = mst_file_data; | |
481 | ||
482 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
c5aa993b JM |
483 | Record it as global even if it's local, not global, so |
484 | lookup_minimal_symbol can find it. We don't check symbol_leading_char | |
485 | because for SunOS4 it always is '_'. */ | |
91f54576 | 486 | if (name[8] == 'C' && strcmp ("__DYNAMIC", name) == 0) |
c906108c SS |
487 | ms_type = mst_data; |
488 | ||
489 | /* Same with virtual function tables, both global and static. */ | |
490 | { | |
bec71544 | 491 | const char *tempstring = name; |
9a619af0 | 492 | |
c906108c SS |
493 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) |
494 | ++tempstring; | |
015a42b4 | 495 | if (is_vtable_name (tempstring)) |
c906108c SS |
496 | ms_type = mst_data; |
497 | } | |
b8fbeb18 | 498 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
499 | break; |
500 | case N_BSS: | |
501 | ms_type = mst_file_bss; | |
b8fbeb18 | 502 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
503 | break; |
504 | default: | |
505 | ms_type = mst_unknown; | |
506 | section = -1; | |
c906108c | 507 | break; |
c5aa993b | 508 | } |
c906108c SS |
509 | |
510 | if ((ms_type == mst_file_text || ms_type == mst_text) | |
511 | && address < lowest_text_address) | |
512 | lowest_text_address = address; | |
513 | ||
8dddcb8f | 514 | reader.record_with_info (name, address, ms_type, section); |
c906108c SS |
515 | } |
516 | \f | |
517 | /* Scan and build partial symbols for a symbol file. | |
518 | We have been initialized by a call to dbx_symfile_init, which | |
519 | put all the relevant info into a "struct dbx_symfile_info", | |
f4352531 | 520 | hung off the objfile structure. */ |
c906108c SS |
521 | |
522 | static void | |
b15cc25c | 523 | dbx_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
524 | { |
525 | bfd *sym_bfd; | |
526 | int val; | |
527 | struct cleanup *back_to; | |
528 | ||
c906108c SS |
529 | sym_bfd = objfile->obfd; |
530 | ||
531 | /* .o and .nlm files are relocatables with text, data and bss segs based at | |
532 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for | |
533 | symbols with a value of 0. */ | |
534 | ||
535 | symfile_relocatable = bfd_get_file_flags (sym_bfd) & HAS_RELOC; | |
536 | ||
537 | /* This is true for Solaris (and all other systems which put stabs | |
538 | in sections, hopefully, since it would be silly to do things | |
539 | differently from Solaris), and false for SunOS4 and other a.out | |
540 | file formats. */ | |
541 | block_address_function_relative = | |
61012eef GB |
542 | ((startswith (bfd_get_target (sym_bfd), "elf")) |
543 | || (startswith (bfd_get_target (sym_bfd), "som")) | |
544 | || (startswith (bfd_get_target (sym_bfd), "coff")) | |
545 | || (startswith (bfd_get_target (sym_bfd), "pe")) | |
546 | || (startswith (bfd_get_target (sym_bfd), "epoc-pe")) | |
547 | || (startswith (bfd_get_target (sym_bfd), "nlm"))); | |
c906108c SS |
548 | |
549 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); | |
550 | if (val < 0) | |
4262abfb | 551 | perror_with_name (objfile_name (objfile)); |
c906108c | 552 | |
de1d8fb9 TG |
553 | /* Size the symbol table. */ |
554 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) | |
c906108c SS |
555 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); |
556 | ||
557 | symbol_size = DBX_SYMBOL_SIZE (objfile); | |
558 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
559 | ||
560 | free_pending_blocks (); | |
a0b3c4fd | 561 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c | 562 | |
d25e8719 | 563 | minimal_symbol_reader reader (objfile); |
c906108c | 564 | |
0963b4bd | 565 | /* Read stabs data from executable file and define symbols. */ |
c906108c | 566 | |
8dddcb8f | 567 | read_dbx_symtab (reader, objfile); |
c906108c SS |
568 | |
569 | /* Add the dynamic symbols. */ | |
570 | ||
8dddcb8f | 571 | read_dbx_dynamic_symtab (reader, objfile); |
c906108c SS |
572 | |
573 | /* Install any minimal symbols that have been collected as the current | |
0963b4bd | 574 | minimal symbols for this objfile. */ |
c906108c | 575 | |
d25e8719 | 576 | reader.install (); |
c906108c SS |
577 | |
578 | do_cleanups (back_to); | |
579 | } | |
580 | ||
581 | /* Initialize anything that needs initializing when a completely new | |
582 | symbol file is specified (not just adding some symbols from another | |
583 | file, e.g. a shared library). */ | |
584 | ||
585 | static void | |
fba45db2 | 586 | dbx_new_init (struct objfile *ignore) |
c906108c SS |
587 | { |
588 | stabsread_new_init (); | |
589 | buildsym_new_init (); | |
590 | init_header_files (); | |
591 | } | |
592 | ||
593 | ||
594 | /* dbx_symfile_init () | |
595 | is the dbx-specific initialization routine for reading symbols. | |
596 | It is passed a struct objfile which contains, among other things, | |
597 | the BFD for the file whose symbols are being read, and a slot for a pointer | |
598 | to "private data" which we fill with goodies. | |
599 | ||
600 | We read the string table into malloc'd space and stash a pointer to it. | |
601 | ||
602 | Since BFD doesn't know how to read debug symbols in a format-independent | |
603 | way (and may never do so...), we have to do it ourselves. We will never | |
0963b4bd | 604 | be called unless this is an a.out (or very similar) file. |
c906108c SS |
605 | FIXME, there should be a cleaner peephole into the BFD environment here. */ |
606 | ||
c5aa993b | 607 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
c906108c SS |
608 | |
609 | static void | |
fba45db2 | 610 | dbx_symfile_init (struct objfile *objfile) |
c906108c SS |
611 | { |
612 | int val; | |
613 | bfd *sym_bfd = objfile->obfd; | |
614 | char *name = bfd_get_filename (sym_bfd); | |
615 | asection *text_sect; | |
616 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; | |
d2f4b8fe | 617 | struct dbx_symfile_info *dbx; |
c906108c | 618 | |
0963b4bd | 619 | /* Allocate struct to keep track of the symfile. */ |
d2f4b8fe TT |
620 | dbx = XCNEW (struct dbx_symfile_info); |
621 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c SS |
622 | |
623 | DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
624 | DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data"); | |
625 | DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss"); | |
626 | ||
0963b4bd | 627 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c SS |
628 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
629 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
630 | ||
0963b4bd | 631 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c | 632 | |
c906108c SS |
633 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
634 | if (!text_sect) | |
8a3fe4f8 | 635 | error (_("Can't find .text section in symbol file")); |
c906108c SS |
636 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
637 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
638 | ||
639 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); | |
640 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); | |
641 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; | |
642 | ||
8b92e4d5 EZ |
643 | /* Read the string table and stash it away in the objfile_obstack. |
644 | When we blow away the objfile the string table goes away as well. | |
c906108c SS |
645 | Note that gdb used to use the results of attempting to malloc the |
646 | string table, based on the size it read, as a form of sanity check | |
647 | for botched byte swapping, on the theory that a byte swapped string | |
648 | table size would be so totally bogus that the malloc would fail. Now | |
8b92e4d5 | 649 | that we put in on the objfile_obstack, we can't do this since gdb gets |
c906108c SS |
650 | a fatal error (out of virtual memory) if the size is bogus. We can |
651 | however at least check to see if the size is less than the size of | |
652 | the size field itself, or larger than the size of the entire file. | |
653 | Note that all valid string tables have a size greater than zero, since | |
0963b4bd | 654 | the bytes used to hold the size are included in the count. */ |
c906108c SS |
655 | |
656 | if (STRING_TABLE_OFFSET == 0) | |
657 | { | |
658 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET | |
c5aa993b | 659 | will never be zero, even when there is no string table. This |
0963b4bd | 660 | would appear to be a bug in bfd. */ |
c906108c SS |
661 | DBX_STRINGTAB_SIZE (objfile) = 0; |
662 | DBX_STRINGTAB (objfile) = NULL; | |
663 | } | |
664 | else | |
665 | { | |
666 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); | |
667 | if (val < 0) | |
668 | perror_with_name (name); | |
c5aa993b | 669 | |
4efb68b1 AC |
670 | memset (size_temp, 0, sizeof (size_temp)); |
671 | val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd); | |
c906108c SS |
672 | if (val < 0) |
673 | { | |
674 | perror_with_name (name); | |
675 | } | |
676 | else if (val == 0) | |
677 | { | |
678 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
679 | EOF if there is no string table, and attempting to read the size | |
0963b4bd | 680 | from EOF will read zero bytes. */ |
c906108c SS |
681 | DBX_STRINGTAB_SIZE (objfile) = 0; |
682 | DBX_STRINGTAB (objfile) = NULL; | |
683 | } | |
684 | else | |
685 | { | |
686 | /* Read some data that would appear to be the string table size. | |
687 | If there really is a string table, then it is probably the right | |
688 | size. Byteswap if necessary and validate the size. Note that | |
689 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
690 | random data that happened to be at STRING_TABLE_OFFSET, because | |
691 | bfd can't tell us there is no string table, the sanity checks may | |
0963b4bd | 692 | or may not catch this. */ |
c906108c | 693 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); |
c5aa993b | 694 | |
c906108c SS |
695 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) |
696 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
8a3fe4f8 | 697 | error (_("ridiculous string table size (%d bytes)."), |
c906108c | 698 | DBX_STRINGTAB_SIZE (objfile)); |
c5aa993b | 699 | |
c906108c | 700 | DBX_STRINGTAB (objfile) = |
8b92e4d5 | 701 | (char *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
702 | DBX_STRINGTAB_SIZE (objfile)); |
703 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); | |
c5aa993b | 704 | |
c906108c | 705 | /* Now read in the string table in one big gulp. */ |
c5aa993b | 706 | |
c906108c SS |
707 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
708 | if (val < 0) | |
709 | perror_with_name (name); | |
3a42e9d0 AM |
710 | val = bfd_bread (DBX_STRINGTAB (objfile), |
711 | DBX_STRINGTAB_SIZE (objfile), | |
712 | sym_bfd); | |
c906108c SS |
713 | if (val != DBX_STRINGTAB_SIZE (objfile)) |
714 | perror_with_name (name); | |
715 | } | |
716 | } | |
717 | } | |
718 | ||
719 | /* Perform any local cleanups required when we are done with a particular | |
720 | objfile. I.E, we are in the process of discarding all symbol information | |
721 | for an objfile, freeing up all memory held for it, and unlinking the | |
0963b4bd | 722 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
723 | |
724 | static void | |
fba45db2 | 725 | dbx_symfile_finish (struct objfile *objfile) |
c906108c | 726 | { |
d2f4b8fe TT |
727 | free_header_files (); |
728 | } | |
729 | ||
730 | static void | |
731 | dbx_free_symfile_info (struct objfile *objfile, void *arg) | |
732 | { | |
9a3c8263 | 733 | struct dbx_symfile_info *dbx = (struct dbx_symfile_info *) arg; |
d2f4b8fe TT |
734 | |
735 | if (dbx->header_files != NULL) | |
c906108c | 736 | { |
d2f4b8fe TT |
737 | int i = dbx->n_header_files; |
738 | struct header_file *hfiles = dbx->header_files; | |
c906108c | 739 | |
d2f4b8fe TT |
740 | while (--i >= 0) |
741 | { | |
742 | xfree (hfiles[i].name); | |
743 | xfree (hfiles[i].vector); | |
c906108c | 744 | } |
d2f4b8fe | 745 | xfree (hfiles); |
c906108c | 746 | } |
d2f4b8fe TT |
747 | |
748 | xfree (dbx); | |
c906108c | 749 | } |
d2f4b8fe | 750 | |
c906108c | 751 | \f |
c5aa993b | 752 | |
c906108c SS |
753 | /* Buffer for reading the symbol table entries. */ |
754 | static struct external_nlist symbuf[4096]; | |
755 | static int symbuf_idx; | |
756 | static int symbuf_end; | |
757 | ||
c906108c SS |
758 | /* Name of last function encountered. Used in Solaris to approximate |
759 | object file boundaries. */ | |
760 | static char *last_function_name; | |
761 | ||
762 | /* The address in memory of the string table of the object file we are | |
763 | reading (which might not be the "main" object file, but might be a | |
764 | shared library or some other dynamically loaded thing). This is | |
765 | set by read_dbx_symtab when building psymtabs, and by | |
766 | read_ofile_symtab when building symtabs, and is used only by | |
767 | next_symbol_text. FIXME: If that is true, we don't need it when | |
768 | building psymtabs, right? */ | |
769 | static char *stringtab_global; | |
770 | ||
771 | /* These variables are used to control fill_symbuf when the stabs | |
772 | symbols are not contiguous (as may be the case when a COFF file is | |
773 | linked using --split-by-reloc). */ | |
774 | static struct stab_section_list *symbuf_sections; | |
775 | static unsigned int symbuf_left; | |
776 | static unsigned int symbuf_read; | |
777 | ||
086df311 DJ |
778 | /* This variable stores a global stabs buffer, if we read stabs into |
779 | memory in one chunk in order to process relocations. */ | |
780 | static bfd_byte *stabs_data; | |
781 | ||
c906108c SS |
782 | /* Refill the symbol table input buffer |
783 | and set the variables that control fetching entries from it. | |
784 | Reports an error if no data available. | |
785 | This function can read past the end of the symbol table | |
786 | (into the string table) but this does no harm. */ | |
787 | ||
788 | static void | |
fba45db2 | 789 | fill_symbuf (bfd *sym_bfd) |
c906108c SS |
790 | { |
791 | unsigned int count; | |
792 | int nbytes; | |
793 | ||
086df311 DJ |
794 | if (stabs_data) |
795 | { | |
796 | nbytes = sizeof (symbuf); | |
797 | if (nbytes > symbuf_left) | |
798 | nbytes = symbuf_left; | |
799 | memcpy (symbuf, stabs_data + symbuf_read, nbytes); | |
800 | } | |
801 | else if (symbuf_sections == NULL) | |
802 | { | |
803 | count = sizeof (symbuf); | |
804 | nbytes = bfd_bread (symbuf, count, sym_bfd); | |
805 | } | |
c906108c SS |
806 | else |
807 | { | |
808 | if (symbuf_left <= 0) | |
809 | { | |
810 | file_ptr filepos = symbuf_sections->section->filepos; | |
9a619af0 | 811 | |
c906108c SS |
812 | if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0) |
813 | perror_with_name (bfd_get_filename (sym_bfd)); | |
814 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section); | |
815 | symbol_table_offset = filepos - symbuf_read; | |
816 | symbuf_sections = symbuf_sections->next; | |
817 | } | |
818 | ||
819 | count = symbuf_left; | |
820 | if (count > sizeof (symbuf)) | |
821 | count = sizeof (symbuf); | |
086df311 | 822 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
c906108c SS |
823 | } |
824 | ||
c906108c SS |
825 | if (nbytes < 0) |
826 | perror_with_name (bfd_get_filename (sym_bfd)); | |
827 | else if (nbytes == 0) | |
8a3fe4f8 | 828 | error (_("Premature end of file reading symbol table")); |
c906108c SS |
829 | symbuf_end = nbytes / symbol_size; |
830 | symbuf_idx = 0; | |
831 | symbuf_left -= nbytes; | |
832 | symbuf_read += nbytes; | |
833 | } | |
834 | ||
086df311 DJ |
835 | static void |
836 | stabs_seek (int sym_offset) | |
837 | { | |
838 | if (stabs_data) | |
839 | { | |
840 | symbuf_read += sym_offset; | |
841 | symbuf_left -= sym_offset; | |
842 | } | |
843 | else | |
844 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); | |
845 | } | |
846 | ||
c906108c SS |
847 | #define INTERNALIZE_SYMBOL(intern, extern, abfd) \ |
848 | { \ | |
c906108c | 849 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \ |
83b94be5 AM |
850 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \ |
851 | (intern).n_other = 0; \ | |
c906108c | 852 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \ |
40b3352b L |
853 | if (bfd_get_sign_extend_vma (abfd)) \ |
854 | (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \ | |
855 | else \ | |
856 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \ | |
c906108c SS |
857 | } |
858 | ||
859 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
860 | that hasn't been swapped. Swap the symbol at the same time | |
861 | that symbuf_idx is incremented. */ | |
862 | ||
863 | /* dbx allows the text of a symbol name to be continued into the | |
864 | next symbol name! When such a continuation is encountered | |
865 | (a \ at the end of the text of a name) | |
866 | call this function to get the continuation. */ | |
867 | ||
868 | static char * | |
fba45db2 | 869 | dbx_next_symbol_text (struct objfile *objfile) |
c906108c SS |
870 | { |
871 | struct internal_nlist nlist; | |
872 | ||
873 | if (symbuf_idx == symbuf_end) | |
874 | fill_symbuf (symfile_bfd); | |
875 | ||
876 | symnum++; | |
c5aa993b | 877 | INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], symfile_bfd); |
c906108c SS |
878 | OBJSTAT (objfile, n_stabs++); |
879 | ||
880 | symbuf_idx++; | |
881 | ||
882 | return nlist.n_strx + stringtab_global + file_string_table_offset; | |
883 | } | |
884 | \f | |
885 | /* Initialize the list of bincls to contain none and have some | |
886 | allocated. */ | |
887 | ||
888 | static void | |
fba45db2 | 889 | init_bincl_list (int number, struct objfile *objfile) |
c906108c SS |
890 | { |
891 | bincls_allocated = number; | |
8d749320 SM |
892 | next_bincl = bincl_list = XNEWVEC (struct header_file_location, |
893 | bincls_allocated); | |
c906108c SS |
894 | } |
895 | ||
896 | /* Add a bincl to the list. */ | |
897 | ||
898 | static void | |
fba45db2 | 899 | add_bincl_to_list (struct partial_symtab *pst, char *name, int instance) |
c906108c SS |
900 | { |
901 | if (next_bincl >= bincl_list + bincls_allocated) | |
902 | { | |
903 | int offset = next_bincl - bincl_list; | |
9a619af0 | 904 | |
c906108c SS |
905 | bincls_allocated *= 2; |
906 | bincl_list = (struct header_file_location *) | |
0efffb96 AC |
907 | xrealloc ((char *) bincl_list, |
908 | bincls_allocated * sizeof (struct header_file_location)); | |
c906108c SS |
909 | next_bincl = bincl_list + offset; |
910 | } | |
911 | next_bincl->pst = pst; | |
912 | next_bincl->instance = instance; | |
913 | next_bincl++->name = name; | |
914 | } | |
915 | ||
916 | /* Given a name, value pair, find the corresponding | |
917 | bincl in the list. Return the partial symtab associated | |
918 | with that header_file_location. */ | |
919 | ||
920 | static struct partial_symtab * | |
fba45db2 | 921 | find_corresponding_bincl_psymtab (char *name, int instance) |
c906108c SS |
922 | { |
923 | struct header_file_location *bincl; | |
924 | ||
925 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
926 | if (bincl->instance == instance | |
6314a349 | 927 | && strcmp (name, bincl->name) == 0) |
c906108c SS |
928 | return bincl->pst; |
929 | ||
23136709 | 930 | repeated_header_complaint (name, symnum); |
c906108c SS |
931 | return (struct partial_symtab *) 0; |
932 | } | |
933 | ||
934 | /* Free the storage allocated for the bincl list. */ | |
935 | ||
936 | static void | |
fba45db2 | 937 | free_bincl_list (struct objfile *objfile) |
c906108c | 938 | { |
2dc74dc1 | 939 | xfree (bincl_list); |
c906108c SS |
940 | bincls_allocated = 0; |
941 | } | |
942 | ||
74b7792f AC |
943 | static void |
944 | do_free_bincl_list_cleanup (void *objfile) | |
945 | { | |
9a3c8263 | 946 | free_bincl_list ((struct objfile *) objfile); |
74b7792f AC |
947 | } |
948 | ||
949 | static struct cleanup * | |
950 | make_cleanup_free_bincl_list (struct objfile *objfile) | |
951 | { | |
952 | return make_cleanup (do_free_bincl_list_cleanup, objfile); | |
953 | } | |
954 | ||
6a34fd2f EZ |
955 | /* Set namestring based on nlist. If the string table index is invalid, |
956 | give a fake name, and print a single error message per symbol file read, | |
957 | rather than abort the symbol reading or flood the user with messages. */ | |
958 | ||
959 | static char * | |
83b94be5 | 960 | set_namestring (struct objfile *objfile, const struct internal_nlist *nlist) |
6a34fd2f EZ |
961 | { |
962 | char *namestring; | |
963 | ||
5409dacf JK |
964 | if (nlist->n_strx + file_string_table_offset |
965 | >= DBX_STRINGTAB_SIZE (objfile) | |
966 | || nlist->n_strx + file_string_table_offset < nlist->n_strx) | |
6a34fd2f | 967 | { |
3e43a32a MS |
968 | complaint (&symfile_complaints, |
969 | _("bad string table offset in symbol %d"), | |
23136709 | 970 | symnum); |
6a34fd2f EZ |
971 | namestring = "<bad string table offset>"; |
972 | } | |
973 | else | |
83b94be5 AM |
974 | namestring = (nlist->n_strx + file_string_table_offset |
975 | + DBX_STRINGTAB (objfile)); | |
6a34fd2f EZ |
976 | return namestring; |
977 | } | |
978 | ||
c906108c SS |
979 | /* Scan a SunOs dynamic symbol table for symbols of interest and |
980 | add them to the minimal symbol table. */ | |
981 | ||
982 | static void | |
8dddcb8f TT |
983 | read_dbx_dynamic_symtab (minimal_symbol_reader &reader, |
984 | struct objfile *objfile) | |
c906108c SS |
985 | { |
986 | bfd *abfd = objfile->obfd; | |
987 | struct cleanup *back_to; | |
988 | int counter; | |
989 | long dynsym_size; | |
990 | long dynsym_count; | |
991 | asymbol **dynsyms; | |
992 | asymbol **symptr; | |
993 | arelent **relptr; | |
994 | long dynrel_size; | |
995 | long dynrel_count; | |
996 | arelent **dynrels; | |
997 | CORE_ADDR sym_value; | |
bec71544 | 998 | const char *name; |
c906108c SS |
999 | |
1000 | /* Check that the symbol file has dynamic symbols that we know about. | |
1001 | bfd_arch_unknown can happen if we are reading a sun3 symbol file | |
1002 | on a sun4 host (and vice versa) and bfd is not configured | |
1003 | --with-target=all. This would trigger an assertion in bfd/sunos.c, | |
1004 | so we ignore the dynamic symbols in this case. */ | |
1005 | if (bfd_get_flavour (abfd) != bfd_target_aout_flavour | |
1006 | || (bfd_get_file_flags (abfd) & DYNAMIC) == 0 | |
1007 | || bfd_get_arch (abfd) == bfd_arch_unknown) | |
1008 | return; | |
1009 | ||
1010 | dynsym_size = bfd_get_dynamic_symtab_upper_bound (abfd); | |
1011 | if (dynsym_size < 0) | |
1012 | return; | |
1013 | ||
1014 | dynsyms = (asymbol **) xmalloc (dynsym_size); | |
b8c9b27d | 1015 | back_to = make_cleanup (xfree, dynsyms); |
c906108c SS |
1016 | |
1017 | dynsym_count = bfd_canonicalize_dynamic_symtab (abfd, dynsyms); | |
1018 | if (dynsym_count < 0) | |
1019 | { | |
1020 | do_cleanups (back_to); | |
1021 | return; | |
1022 | } | |
1023 | ||
1024 | /* Enter dynamic symbols into the minimal symbol table | |
1025 | if this is a stripped executable. */ | |
1026 | if (bfd_get_symcount (abfd) <= 0) | |
1027 | { | |
1028 | symptr = dynsyms; | |
1029 | for (counter = 0; counter < dynsym_count; counter++, symptr++) | |
1030 | { | |
1031 | asymbol *sym = *symptr; | |
1032 | asection *sec; | |
1033 | int type; | |
1034 | ||
1035 | sec = bfd_get_section (sym); | |
1036 | ||
1037 | /* BFD symbols are section relative. */ | |
1038 | sym_value = sym->value + sec->vma; | |
1039 | ||
1040 | if (bfd_get_section_flags (abfd, sec) & SEC_CODE) | |
1041 | { | |
c906108c SS |
1042 | type = N_TEXT; |
1043 | } | |
1044 | else if (bfd_get_section_flags (abfd, sec) & SEC_DATA) | |
1045 | { | |
c906108c SS |
1046 | type = N_DATA; |
1047 | } | |
1048 | else if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) | |
1049 | { | |
c906108c SS |
1050 | type = N_BSS; |
1051 | } | |
1052 | else | |
1053 | continue; | |
1054 | ||
1055 | if (sym->flags & BSF_GLOBAL) | |
1056 | type |= N_EXT; | |
1057 | ||
8dddcb8f | 1058 | record_minimal_symbol (reader, bfd_asymbol_name (sym), sym_value, |
c906108c SS |
1059 | type, objfile); |
1060 | } | |
1061 | } | |
1062 | ||
1063 | /* Symbols from shared libraries have a dynamic relocation entry | |
1064 | that points to the associated slot in the procedure linkage table. | |
1065 | We make a mininal symbol table entry with type mst_solib_trampoline | |
1066 | at the address in the procedure linkage table. */ | |
1067 | dynrel_size = bfd_get_dynamic_reloc_upper_bound (abfd); | |
1068 | if (dynrel_size < 0) | |
1069 | { | |
1070 | do_cleanups (back_to); | |
1071 | return; | |
1072 | } | |
c5aa993b | 1073 | |
c906108c | 1074 | dynrels = (arelent **) xmalloc (dynrel_size); |
b8c9b27d | 1075 | make_cleanup (xfree, dynrels); |
c906108c SS |
1076 | |
1077 | dynrel_count = bfd_canonicalize_dynamic_reloc (abfd, dynrels, dynsyms); | |
1078 | if (dynrel_count < 0) | |
1079 | { | |
1080 | do_cleanups (back_to); | |
1081 | return; | |
1082 | } | |
1083 | ||
1084 | for (counter = 0, relptr = dynrels; | |
1085 | counter < dynrel_count; | |
1086 | counter++, relptr++) | |
1087 | { | |
1088 | arelent *rel = *relptr; | |
2273f0ac | 1089 | CORE_ADDR address = rel->address; |
c906108c SS |
1090 | |
1091 | switch (bfd_get_arch (abfd)) | |
1092 | { | |
1093 | case bfd_arch_sparc: | |
1094 | if (rel->howto->type != RELOC_JMP_SLOT) | |
1095 | continue; | |
1096 | break; | |
1097 | case bfd_arch_m68k: | |
1098 | /* `16' is the type BFD produces for a jump table relocation. */ | |
1099 | if (rel->howto->type != 16) | |
1100 | continue; | |
1101 | ||
1102 | /* Adjust address in the jump table to point to | |
1103 | the start of the bsr instruction. */ | |
1104 | address -= 2; | |
1105 | break; | |
1106 | default: | |
1107 | continue; | |
1108 | } | |
1109 | ||
bec71544 | 1110 | name = bfd_asymbol_name (*rel->sym_ptr_ptr); |
8dddcb8f | 1111 | reader.record (name, address, mst_solib_trampoline); |
c906108c SS |
1112 | } |
1113 | ||
1114 | do_cleanups (back_to); | |
1115 | } | |
1116 | ||
a78f21af | 1117 | static CORE_ADDR |
72b9f47f | 1118 | find_stab_function_addr (char *namestring, const char *filename, |
4867e41e DM |
1119 | struct objfile *objfile) |
1120 | { | |
3b7344d5 | 1121 | struct bound_minimal_symbol msym; |
4867e41e DM |
1122 | char *p; |
1123 | int n; | |
1124 | ||
1125 | p = strchr (namestring, ':'); | |
1126 | if (p == NULL) | |
1127 | p = namestring; | |
1128 | n = p - namestring; | |
224c3ddb | 1129 | p = (char *) alloca (n + 2); |
4867e41e DM |
1130 | strncpy (p, namestring, n); |
1131 | p[n] = 0; | |
1132 | ||
1133 | msym = lookup_minimal_symbol (p, filename, objfile); | |
3b7344d5 | 1134 | if (msym.minsym == NULL) |
4867e41e DM |
1135 | { |
1136 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
1137 | try again with an appended underscore if the minimal symbol | |
1138 | was not found. */ | |
1139 | p[n] = '_'; | |
1140 | p[n + 1] = 0; | |
1141 | msym = lookup_minimal_symbol (p, filename, objfile); | |
1142 | } | |
1143 | ||
3b7344d5 | 1144 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 1145 | { |
0963b4bd | 1146 | /* Try again without the filename. */ |
4867e41e DM |
1147 | p[n] = 0; |
1148 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
1149 | } | |
3b7344d5 | 1150 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 1151 | { |
0963b4bd | 1152 | /* And try again for Sun Fortran, but without the filename. */ |
4867e41e DM |
1153 | p[n] = '_'; |
1154 | p[n + 1] = 0; | |
1155 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
1156 | } | |
1157 | ||
77e371c0 | 1158 | return msym.minsym == NULL ? 0 : BMSYMBOL_VALUE_ADDRESS (msym); |
4867e41e | 1159 | } |
4867e41e | 1160 | |
23136709 KB |
1161 | static void |
1162 | function_outside_compilation_unit_complaint (const char *arg1) | |
1163 | { | |
1164 | complaint (&symfile_complaints, | |
3e43a32a MS |
1165 | _("function `%s' appears to be defined " |
1166 | "outside of all compilation units"), | |
23136709 KB |
1167 | arg1); |
1168 | } | |
1169 | ||
d4f3574e | 1170 | /* Setup partial_symtab's describing each source file for which |
0963b4bd | 1171 | debugging information is available. */ |
c906108c SS |
1172 | |
1173 | static void | |
8dddcb8f | 1174 | read_dbx_symtab (minimal_symbol_reader &reader, struct objfile *objfile) |
c906108c | 1175 | { |
5e2b427d | 1176 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0963b4bd | 1177 | struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch. */ |
c906108c | 1178 | struct internal_nlist nlist; |
d4f3574e SS |
1179 | CORE_ADDR text_addr; |
1180 | int text_size; | |
71c25dea TT |
1181 | char *sym_name; |
1182 | int sym_len; | |
c906108c | 1183 | |
52f0bd74 | 1184 | char *namestring; |
c906108c SS |
1185 | int nsl; |
1186 | int past_first_source_file = 0; | |
c906108c SS |
1187 | CORE_ADDR last_function_start = 0; |
1188 | struct cleanup *back_to; | |
1189 | bfd *abfd; | |
1190 | int textlow_not_set; | |
7c8a5605 | 1191 | int data_sect_index; |
c906108c | 1192 | |
0963b4bd | 1193 | /* Current partial symtab. */ |
c906108c SS |
1194 | struct partial_symtab *pst; |
1195 | ||
0963b4bd | 1196 | /* List of current psymtab's include files. */ |
0d5cff50 | 1197 | const char **psymtab_include_list; |
c906108c SS |
1198 | int includes_allocated; |
1199 | int includes_used; | |
1200 | ||
0963b4bd | 1201 | /* Index within current psymtab dependency list. */ |
c906108c SS |
1202 | struct partial_symtab **dependency_list; |
1203 | int dependencies_used, dependencies_allocated; | |
1204 | ||
d4f3574e SS |
1205 | text_addr = DBX_TEXT_ADDR (objfile); |
1206 | text_size = DBX_TEXT_SIZE (objfile); | |
1207 | ||
c906108c SS |
1208 | /* FIXME. We probably want to change stringtab_global rather than add this |
1209 | while processing every symbol entry. FIXME. */ | |
1210 | file_string_table_offset = 0; | |
1211 | next_file_string_table_offset = 0; | |
1212 | ||
1213 | stringtab_global = DBX_STRINGTAB (objfile); | |
c5aa993b | 1214 | |
c906108c SS |
1215 | pst = (struct partial_symtab *) 0; |
1216 | ||
1217 | includes_allocated = 30; | |
1218 | includes_used = 0; | |
0d5cff50 DE |
1219 | psymtab_include_list = (const char **) alloca (includes_allocated * |
1220 | sizeof (const char *)); | |
c906108c SS |
1221 | |
1222 | dependencies_allocated = 30; | |
1223 | dependencies_used = 0; | |
1224 | dependency_list = | |
1225 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1226 | sizeof (struct partial_symtab *)); | |
1227 | ||
1228 | /* Init bincl list */ | |
1229 | init_bincl_list (20, objfile); | |
74b7792f | 1230 | back_to = make_cleanup_free_bincl_list (objfile); |
c906108c | 1231 | |
46212e0b | 1232 | set_last_source_file (NULL); |
c906108c | 1233 | |
96baa820 | 1234 | lowest_text_address = (CORE_ADDR) -1; |
c906108c | 1235 | |
0963b4bd | 1236 | symfile_bfd = objfile->obfd; /* For next_text_symbol. */ |
c906108c SS |
1237 | abfd = objfile->obfd; |
1238 | symbuf_end = symbuf_idx = 0; | |
1239 | next_symbol_text_func = dbx_next_symbol_text; | |
1240 | textlow_not_set = 1; | |
1241 | has_line_numbers = 0; | |
1242 | ||
4f49b26b JB |
1243 | /* FIXME: jimb/2003-09-12: We don't apply the right section's offset |
1244 | to global and static variables. The stab for a global or static | |
1245 | variable doesn't give us any indication of which section it's in, | |
1246 | so we can't tell immediately which offset in | |
1247 | objfile->section_offsets we should apply to the variable's | |
1248 | address. | |
1249 | ||
1250 | We could certainly find out which section contains the variable | |
1251 | by looking up the variable's unrelocated address with | |
1252 | find_pc_section, but that would be expensive; this is the | |
1253 | function that constructs the partial symbol tables by examining | |
1254 | every symbol in the entire executable, and it's | |
1255 | performance-critical. So that expense would not be welcome. I'm | |
1256 | not sure what to do about this at the moment. | |
1257 | ||
1258 | What we have done for years is to simply assume that the .data | |
1259 | section's offset is appropriate for all global and static | |
1260 | variables. Recently, this was expanded to fall back to the .bss | |
1261 | section's offset if there is no .data section, and then to the | |
1262 | .rodata section's offset. */ | |
7c8a5605 JB |
1263 | data_sect_index = objfile->sect_index_data; |
1264 | if (data_sect_index == -1) | |
1265 | data_sect_index = SECT_OFF_BSS (objfile); | |
2a13f9bc JB |
1266 | if (data_sect_index == -1) |
1267 | data_sect_index = SECT_OFF_RODATA (objfile); | |
d646061f JB |
1268 | |
1269 | /* If data_sect_index is still -1, that's okay. It's perfectly fine | |
1270 | for the file to have no .data, no .bss, and no .text at all, if | |
1271 | it also has no global or static variables. If it does, we will | |
1272 | get an internal error from an ANOFFSET macro below when we try to | |
1273 | use data_sect_index. */ | |
7c8a5605 | 1274 | |
c906108c SS |
1275 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
1276 | { | |
0963b4bd MS |
1277 | /* Get the symbol for this run and pull out some info. */ |
1278 | QUIT; /* Allow this to be interruptable. */ | |
c906108c SS |
1279 | if (symbuf_idx == symbuf_end) |
1280 | fill_symbuf (abfd); | |
1281 | bufp = &symbuf[symbuf_idx++]; | |
1282 | ||
1283 | /* | |
1284 | * Special case to speed up readin. | |
1285 | */ | |
1286 | if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE) | |
1287 | { | |
1288 | has_line_numbers = 1; | |
1289 | continue; | |
1290 | } | |
1291 | ||
1292 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
1293 | OBJSTAT (objfile, n_stabs++); | |
1294 | ||
1295 | /* Ok. There is a lot of code duplicated in the rest of this | |
1296 | switch statement (for efficiency reasons). Since I don't | |
1297 | like duplicating code, I will do my penance here, and | |
1298 | describe the code which is duplicated: | |
1299 | ||
c5aa993b JM |
1300 | *) The assignment to namestring. |
1301 | *) The call to strchr. | |
b021a221 | 1302 | *) The addition of a partial symbol the two partial |
c5aa993b | 1303 | symbol lists. This last is a large section of code, so |
0963b4bd | 1304 | I've imbedded it in the following macro. */ |
c5aa993b | 1305 | |
6a34fd2f EZ |
1306 | switch (nlist.n_type) |
1307 | { | |
6a34fd2f EZ |
1308 | /* |
1309 | * Standard, external, non-debugger, symbols | |
1310 | */ | |
1311 | ||
9ce5d3bb DE |
1312 | case N_TEXT | N_EXT: |
1313 | case N_NBTEXT | N_EXT: | |
6a34fd2f EZ |
1314 | goto record_it; |
1315 | ||
9ce5d3bb DE |
1316 | case N_DATA | N_EXT: |
1317 | case N_NBDATA | N_EXT: | |
6a34fd2f EZ |
1318 | goto record_it; |
1319 | ||
9ce5d3bb DE |
1320 | case N_BSS: |
1321 | case N_BSS | N_EXT: | |
1322 | case N_NBBSS | N_EXT: | |
1323 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
6a34fd2f EZ |
1324 | goto record_it; |
1325 | ||
9ce5d3bb | 1326 | case N_ABS | N_EXT: |
6a34fd2f | 1327 | record_it: |
83b94be5 | 1328 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1329 | |
8dddcb8f | 1330 | record_minimal_symbol (reader, namestring, nlist.n_value, |
6a34fd2f EZ |
1331 | nlist.n_type, objfile); /* Always */ |
1332 | continue; | |
1333 | ||
0963b4bd | 1334 | /* Standard, local, non-debugger, symbols. */ |
6a34fd2f | 1335 | |
9ce5d3bb | 1336 | case N_NBTEXT: |
6a34fd2f EZ |
1337 | |
1338 | /* We need to be able to deal with both N_FN or N_TEXT, | |
1339 | because we have no way of knowing whether the sys-supplied ld | |
1340 | or GNU ld was used to make the executable. Sequents throw | |
1341 | in another wrinkle -- they renumbered N_FN. */ | |
1342 | ||
9ce5d3bb DE |
1343 | case N_FN: |
1344 | case N_FN_SEQ: | |
1345 | case N_TEXT: | |
83b94be5 | 1346 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1347 | |
1348 | if ((namestring[0] == '-' && namestring[1] == 'l') | |
1349 | || (namestring[(nsl = strlen (namestring)) - 1] == 'o' | |
1350 | && namestring[nsl - 2] == '.')) | |
9ce5d3bb | 1351 | { |
2273f0ac TT |
1352 | nlist.n_value += ANOFFSET (objfile->section_offsets, |
1353 | SECT_OFF_TEXT (objfile)); | |
1354 | ||
9ce5d3bb DE |
1355 | if (past_first_source_file && pst |
1356 | /* The gould NP1 uses low values for .o and -l symbols | |
1357 | which are not the address. */ | |
1358 | && nlist.n_value >= pst->textlow) | |
1359 | { | |
8763cede DE |
1360 | dbx_end_psymtab (objfile, pst, psymtab_include_list, |
1361 | includes_used, symnum * symbol_size, | |
1362 | nlist.n_value > pst->texthigh | |
1363 | ? nlist.n_value : pst->texthigh, | |
1364 | dependency_list, dependencies_used, | |
1365 | textlow_not_set); | |
9ce5d3bb DE |
1366 | pst = (struct partial_symtab *) 0; |
1367 | includes_used = 0; | |
1368 | dependencies_used = 0; | |
578933ab | 1369 | has_line_numbers = 0; |
9ce5d3bb DE |
1370 | } |
1371 | else | |
1372 | past_first_source_file = 1; | |
9ce5d3bb | 1373 | } |
6a34fd2f | 1374 | else |
9ce5d3bb | 1375 | goto record_it; |
6a34fd2f EZ |
1376 | continue; |
1377 | ||
9ce5d3bb | 1378 | case N_DATA: |
6a34fd2f EZ |
1379 | goto record_it; |
1380 | ||
9ce5d3bb | 1381 | case N_UNDF | N_EXT: |
d4862372 JB |
1382 | /* The case (nlist.n_value != 0) is a "Fortran COMMON" symbol. |
1383 | We used to rely on the target to tell us whether it knows | |
1384 | where the symbol has been relocated to, but none of the | |
1385 | target implementations actually provided that operation. | |
1386 | So we just ignore the symbol, the same way we would do if | |
1387 | we had a target-side symbol lookup which returned no match. | |
1388 | ||
1389 | All other symbols (with nlist.n_value == 0), are really | |
1390 | undefined, and so we ignore them too. */ | |
1391 | continue; | |
6a34fd2f | 1392 | |
9ce5d3bb | 1393 | case N_UNDF: |
6a34fd2f | 1394 | if (processing_acc_compilation && nlist.n_strx == 1) |
9ce5d3bb DE |
1395 | { |
1396 | /* Deal with relative offsets in the string table | |
1397 | used in ELF+STAB under Solaris. If we want to use the | |
1398 | n_strx field, which contains the name of the file, | |
1399 | we must adjust file_string_table_offset *before* calling | |
1400 | set_namestring(). */ | |
1401 | past_first_source_file = 1; | |
1402 | file_string_table_offset = next_file_string_table_offset; | |
1403 | next_file_string_table_offset = | |
1404 | file_string_table_offset + nlist.n_value; | |
1405 | if (next_file_string_table_offset < file_string_table_offset) | |
1406 | error (_("string table offset backs up at %d"), symnum); | |
1407 | /* FIXME -- replace error() with complaint. */ | |
1408 | continue; | |
1409 | } | |
6a34fd2f EZ |
1410 | continue; |
1411 | ||
1412 | /* Lots of symbol types we can just ignore. */ | |
1413 | ||
9ce5d3bb DE |
1414 | case N_ABS: |
1415 | case N_NBDATA: | |
1416 | case N_NBBSS: | |
6a34fd2f EZ |
1417 | continue; |
1418 | ||
0963b4bd | 1419 | /* Keep going . . . */ |
6a34fd2f EZ |
1420 | |
1421 | /* | |
1422 | * Special symbol types for GNU | |
1423 | */ | |
9ce5d3bb DE |
1424 | case N_INDR: |
1425 | case N_INDR | N_EXT: | |
1426 | case N_SETA: | |
1427 | case N_SETA | N_EXT: | |
1428 | case N_SETT: | |
1429 | case N_SETT | N_EXT: | |
1430 | case N_SETD: | |
1431 | case N_SETD | N_EXT: | |
1432 | case N_SETB: | |
1433 | case N_SETB | N_EXT: | |
1434 | case N_SETV: | |
6a34fd2f EZ |
1435 | continue; |
1436 | ||
1437 | /* | |
1438 | * Debugger symbols | |
1439 | */ | |
1440 | ||
9ce5d3bb | 1441 | case N_SO: |
6a34fd2f EZ |
1442 | { |
1443 | CORE_ADDR valu; | |
1444 | static int prev_so_symnum = -10; | |
1445 | static int first_so_symnum; | |
0ba1096a | 1446 | const char *p; |
57c22c6c | 1447 | static char *dirname_nso; |
6a34fd2f EZ |
1448 | int prev_textlow_not_set; |
1449 | ||
063e58ba MD |
1450 | valu = nlist.n_value + ANOFFSET (objfile->section_offsets, |
1451 | SECT_OFF_TEXT (objfile)); | |
6a34fd2f EZ |
1452 | |
1453 | prev_textlow_not_set = textlow_not_set; | |
1454 | ||
6a34fd2f | 1455 | /* A zero value is probably an indication for the SunPRO 3.0 |
8763cede | 1456 | compiler. dbx_end_psymtab explicitly tests for zero, so |
6a34fd2f EZ |
1457 | don't relocate it. */ |
1458 | ||
203c3895 | 1459 | if (nlist.n_value == 0 |
5e2b427d | 1460 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
6a34fd2f EZ |
1461 | { |
1462 | textlow_not_set = 1; | |
1463 | valu = 0; | |
1464 | } | |
1465 | else | |
1466 | textlow_not_set = 0; | |
203c3895 | 1467 | |
6a34fd2f EZ |
1468 | past_first_source_file = 1; |
1469 | ||
1470 | if (prev_so_symnum != symnum - 1) | |
0963b4bd | 1471 | { /* Here if prev stab wasn't N_SO. */ |
6a34fd2f EZ |
1472 | first_so_symnum = symnum; |
1473 | ||
1474 | if (pst) | |
1475 | { | |
8763cede DE |
1476 | dbx_end_psymtab (objfile, pst, psymtab_include_list, |
1477 | includes_used, symnum * symbol_size, | |
1478 | valu > pst->texthigh | |
1479 | ? valu : pst->texthigh, | |
1480 | dependency_list, dependencies_used, | |
1481 | prev_textlow_not_set); | |
6a34fd2f EZ |
1482 | pst = (struct partial_symtab *) 0; |
1483 | includes_used = 0; | |
1484 | dependencies_used = 0; | |
578933ab | 1485 | has_line_numbers = 0; |
6a34fd2f EZ |
1486 | } |
1487 | } | |
1488 | ||
1489 | prev_so_symnum = symnum; | |
1490 | ||
0963b4bd | 1491 | /* End the current partial symtab and start a new one. */ |
6a34fd2f | 1492 | |
83b94be5 | 1493 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1494 | |
0963b4bd | 1495 | /* Null name means end of .o file. Don't start a new one. */ |
6a34fd2f EZ |
1496 | if (*namestring == '\000') |
1497 | continue; | |
1498 | ||
1499 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
1500 | The first one is a directory name; the second the file name. | |
1501 | If pst exists, is empty, and has a filename ending in '/', | |
0963b4bd | 1502 | we assume the previous N_SO was a directory name. */ |
6a34fd2f | 1503 | |
0ba1096a KT |
1504 | p = lbasename (namestring); |
1505 | if (p != namestring && *p == '\000') | |
57c22c6c BR |
1506 | { |
1507 | /* Save the directory name SOs locally, then save it into | |
0963b4bd | 1508 | the psymtab when it's created below. */ |
57c22c6c BR |
1509 | dirname_nso = namestring; |
1510 | continue; | |
1511 | } | |
6a34fd2f EZ |
1512 | |
1513 | /* Some other compilers (C++ ones in particular) emit useless | |
131fe1bb DE |
1514 | SOs for non-existant .c files. We ignore all subsequent SOs |
1515 | that immediately follow the first. */ | |
6a34fd2f EZ |
1516 | |
1517 | if (!pst) | |
57c22c6c | 1518 | { |
9ce5d3bb DE |
1519 | pst = start_psymtab (objfile, |
1520 | namestring, valu, | |
1521 | first_so_symnum * symbol_size, | |
1522 | objfile->global_psymbols.next, | |
1523 | objfile->static_psymbols.next); | |
57c22c6c BR |
1524 | pst->dirname = dirname_nso; |
1525 | dirname_nso = NULL; | |
1526 | } | |
6a34fd2f EZ |
1527 | continue; |
1528 | } | |
1529 | ||
9ce5d3bb | 1530 | case N_BINCL: |
6a34fd2f EZ |
1531 | { |
1532 | enum language tmp_language; | |
9a619af0 | 1533 | |
6a34fd2f EZ |
1534 | /* Add this bincl to the bincl_list for future EXCLs. No |
1535 | need to save the string; it'll be around until | |
0963b4bd | 1536 | read_dbx_symtab function returns. */ |
6a34fd2f | 1537 | |
83b94be5 | 1538 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1539 | tmp_language = deduce_language_from_filename (namestring); |
1540 | ||
1541 | /* Only change the psymtab's language if we've learned | |
1542 | something useful (eg. tmp_language is not language_unknown). | |
1543 | In addition, to match what start_subfile does, never change | |
1544 | from C++ to C. */ | |
1545 | if (tmp_language != language_unknown | |
1546 | && (tmp_language != language_c | |
1547 | || psymtab_language != language_cplus)) | |
d7f98cce | 1548 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1549 | |
1550 | if (pst == NULL) | |
9ce5d3bb DE |
1551 | { |
1552 | /* FIXME: we should not get here without a PST to work on. | |
1553 | Attempt to recover. */ | |
1554 | complaint (&symfile_complaints, | |
3e43a32a MS |
1555 | _("N_BINCL %s not in entries for " |
1556 | "any file, at symtab pos %d"), | |
9ce5d3bb DE |
1557 | namestring, symnum); |
1558 | continue; | |
1559 | } | |
6a34fd2f EZ |
1560 | add_bincl_to_list (pst, namestring, nlist.n_value); |
1561 | ||
0963b4bd | 1562 | /* Mark down an include file in the current psymtab. */ |
6a34fd2f EZ |
1563 | |
1564 | goto record_include_file; | |
1565 | } | |
1566 | ||
9ce5d3bb | 1567 | case N_SOL: |
6a34fd2f EZ |
1568 | { |
1569 | enum language tmp_language; | |
6a34fd2f | 1570 | |
0963b4bd | 1571 | /* Mark down an include file in the current psymtab. */ |
83b94be5 | 1572 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1573 | tmp_language = deduce_language_from_filename (namestring); |
1574 | ||
1575 | /* Only change the psymtab's language if we've learned | |
1576 | something useful (eg. tmp_language is not language_unknown). | |
1577 | In addition, to match what start_subfile does, never change | |
1578 | from C++ to C. */ | |
1579 | if (tmp_language != language_unknown | |
1580 | && (tmp_language != language_c | |
1581 | || psymtab_language != language_cplus)) | |
d7f98cce | 1582 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1583 | |
1584 | /* In C++, one may expect the same filename to come round many | |
1585 | times, when code is coming alternately from the main file | |
0963b4bd | 1586 | and from inline functions in other files. So I check to see |
6a34fd2f EZ |
1587 | if this is a file we've seen before -- either the main |
1588 | source file, or a previously included file. | |
1589 | ||
1590 | This seems to be a lot of time to be spending on N_SOL, but | |
1591 | things like "break c-exp.y:435" need to work (I | |
1592 | suppose the psymtab_include_list could be hashed or put | |
1593 | in a binary tree, if profiling shows this is a major hog). */ | |
0ba1096a | 1594 | if (pst && filename_cmp (namestring, pst->filename) == 0) |
9ce5d3bb | 1595 | continue; |
6a34fd2f | 1596 | { |
aa1ee363 | 1597 | int i; |
9a619af0 | 1598 | |
6a34fd2f | 1599 | for (i = 0; i < includes_used; i++) |
0ba1096a | 1600 | if (filename_cmp (namestring, psymtab_include_list[i]) == 0) |
6a34fd2f EZ |
1601 | { |
1602 | i = -1; | |
1603 | break; | |
1604 | } | |
1605 | if (i == -1) | |
1606 | continue; | |
1607 | } | |
1608 | ||
9ce5d3bb | 1609 | record_include_file: |
6a34fd2f EZ |
1610 | |
1611 | psymtab_include_list[includes_used++] = namestring; | |
1612 | if (includes_used >= includes_allocated) | |
9ce5d3bb | 1613 | { |
0d5cff50 | 1614 | const char **orig = psymtab_include_list; |
6a34fd2f | 1615 | |
0d5cff50 DE |
1616 | psymtab_include_list = (const char **) |
1617 | alloca ((includes_allocated *= 2) * sizeof (const char *)); | |
9ce5d3bb | 1618 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 1619 | includes_used * sizeof (const char *)); |
9ce5d3bb | 1620 | } |
6a34fd2f EZ |
1621 | continue; |
1622 | } | |
0963b4bd MS |
1623 | case N_LSYM: /* Typedef or automatic variable. */ |
1624 | case N_STSYM: /* Data seg var -- static. */ | |
9ce5d3bb DE |
1625 | case N_LCSYM: /* BSS " */ |
1626 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
1627 | case N_NBSTS: /* Gould nobase. */ | |
1628 | case N_NBLCS: /* symbols. */ | |
1629 | case N_FUN: | |
1630 | case N_GSYM: /* Global (extern) variable; can be | |
063e58ba | 1631 | data or bss (sigh FIXME). */ |
6a34fd2f EZ |
1632 | |
1633 | /* Following may probably be ignored; I'll leave them here | |
1634 | for now (until I do Pascal and Modula 2 extensions). */ | |
1635 | ||
9ce5d3bb | 1636 | case N_PC: /* I may or may not need this; I |
063e58ba | 1637 | suspect not. */ |
0963b4bd | 1638 | case N_M2C: /* I suspect that I can ignore this here. */ |
9ce5d3bb | 1639 | case N_SCOPE: /* Same. */ |
131fe1bb DE |
1640 | { |
1641 | char *p; | |
6a34fd2f | 1642 | |
83b94be5 | 1643 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1644 | |
1645 | /* See if this is an end of function stab. */ | |
1646 | if (pst && nlist.n_type == N_FUN && *namestring == '\000') | |
9ce5d3bb DE |
1647 | { |
1648 | CORE_ADDR valu; | |
1649 | ||
1650 | /* It's value is the size (in bytes) of the function for | |
1651 | function relative stabs, or the address of the function's | |
1652 | end for old style stabs. */ | |
1653 | valu = nlist.n_value + last_function_start; | |
1654 | if (pst->texthigh == 0 || valu > pst->texthigh) | |
1655 | pst->texthigh = valu; | |
1656 | break; | |
1657 | } | |
6a34fd2f EZ |
1658 | |
1659 | p = (char *) strchr (namestring, ':'); | |
1660 | if (!p) | |
0963b4bd | 1661 | continue; /* Not a debugging symbol. */ |
6a34fd2f | 1662 | |
71c25dea | 1663 | sym_len = 0; |
87bc73ea | 1664 | sym_name = NULL; /* pacify "gcc -Werror" */ |
71c25dea TT |
1665 | if (psymtab_language == language_cplus) |
1666 | { | |
2f408ecb PA |
1667 | std::string name (namestring, p - namestring); |
1668 | std::string new_name = cp_canonicalize_string (name.c_str ()); | |
1669 | if (!new_name.empty ()) | |
1670 | { | |
1671 | sym_len = new_name.length (); | |
224c3ddb | 1672 | sym_name = (char *) obstack_copy0 (&objfile->objfile_obstack, |
2f408ecb PA |
1673 | new_name.c_str (), |
1674 | sym_len); | |
1675 | } | |
1676 | } | |
71c25dea TT |
1677 | |
1678 | if (sym_len == 0) | |
1679 | { | |
1680 | sym_name = namestring; | |
1681 | sym_len = p - namestring; | |
1682 | } | |
1683 | ||
6a34fd2f EZ |
1684 | /* Main processing section for debugging symbols which |
1685 | the initial read through the symbol tables needs to worry | |
1686 | about. If we reach this point, the symbol which we are | |
1687 | considering is definitely one we are interested in. | |
1688 | p must also contain the (valid) index into the namestring | |
1689 | which indicates the debugging type symbol. */ | |
1690 | ||
1691 | switch (p[1]) | |
9ce5d3bb DE |
1692 | { |
1693 | case 'S': | |
1694 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1695 | data_sect_index); | |
1696 | ||
5e2b427d | 1697 | if (gdbarch_static_transform_name_p (gdbarch)) |
e81cff30 | 1698 | gdbarch_static_transform_name (gdbarch, namestring); |
9ce5d3bb | 1699 | |
04a679b8 | 1700 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1701 | VAR_DOMAIN, LOC_STATIC, |
1702 | &objfile->static_psymbols, | |
1762568f | 1703 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1704 | continue; |
131fe1bb | 1705 | |
9ce5d3bb DE |
1706 | case 'G': |
1707 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1708 | data_sect_index); | |
1709 | /* The addresses in these entries are reported to be | |
0963b4bd | 1710 | wrong. See the code that reads 'G's for symtabs. */ |
04a679b8 | 1711 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1712 | VAR_DOMAIN, LOC_STATIC, |
1713 | &objfile->global_psymbols, | |
1762568f | 1714 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1715 | continue; |
6a34fd2f | 1716 | |
9ce5d3bb DE |
1717 | case 'T': |
1718 | /* When a 'T' entry is defining an anonymous enum, it | |
1719 | may have a name which is the empty string, or a | |
1720 | single space. Since they're not really defining a | |
1721 | symbol, those shouldn't go in the partial symbol | |
1722 | table. We do pick up the elements of such enums at | |
1723 | 'check_enum:', below. */ | |
1724 | if (p >= namestring + 2 | |
1725 | || (p == namestring + 1 | |
1726 | && namestring[0] != ' ')) | |
1727 | { | |
04a679b8 | 1728 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1729 | STRUCT_DOMAIN, LOC_TYPEDEF, |
1730 | &objfile->static_psymbols, | |
1762568f | 1731 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1732 | if (p[2] == 't') |
1733 | { | |
1734 | /* Also a typedef with the same name. */ | |
04a679b8 | 1735 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1736 | VAR_DOMAIN, LOC_TYPEDEF, |
1737 | &objfile->static_psymbols, | |
1762568f | 1738 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1739 | p += 1; |
1740 | } | |
1741 | } | |
1742 | goto check_enum; | |
131fe1bb | 1743 | |
9ce5d3bb | 1744 | case 't': |
0963b4bd | 1745 | if (p != namestring) /* a name is there, not just :T... */ |
9ce5d3bb | 1746 | { |
04a679b8 | 1747 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1748 | VAR_DOMAIN, LOC_TYPEDEF, |
1749 | &objfile->static_psymbols, | |
1762568f | 1750 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1751 | } |
1752 | check_enum: | |
1753 | /* If this is an enumerated type, we need to | |
1754 | add all the enum constants to the partial symbol | |
1755 | table. This does not cover enums without names, e.g. | |
1756 | "enum {a, b} c;" in C, but fortunately those are | |
1757 | rare. There is no way for GDB to find those from the | |
1758 | enum type without spending too much time on it. Thus | |
1759 | to solve this problem, the compiler needs to put out the | |
1760 | enum in a nameless type. GCC2 does this. */ | |
1761 | ||
1762 | /* We are looking for something of the form | |
1763 | <name> ":" ("t" | "T") [<number> "="] "e" | |
1764 | {<constant> ":" <value> ","} ";". */ | |
1765 | ||
1766 | /* Skip over the colon and the 't' or 'T'. */ | |
1767 | p += 2; | |
1768 | /* This type may be given a number. Also, numbers can come | |
1769 | in pairs like (0,26). Skip over it. */ | |
1770 | while ((*p >= '0' && *p <= '9') | |
1771 | || *p == '(' || *p == ',' || *p == ')' | |
1772 | || *p == '=') | |
1773 | p++; | |
1774 | ||
1775 | if (*p++ == 'e') | |
1776 | { | |
1777 | /* The aix4 compiler emits extra crud before the members. */ | |
1778 | if (*p == '-') | |
1779 | { | |
1780 | /* Skip over the type (?). */ | |
1781 | while (*p != ':') | |
1782 | p++; | |
6a34fd2f | 1783 | |
9ce5d3bb | 1784 | /* Skip over the colon. */ |
6a34fd2f | 1785 | p++; |
9ce5d3bb | 1786 | } |
6a34fd2f | 1787 | |
9ce5d3bb DE |
1788 | /* We have found an enumerated type. */ |
1789 | /* According to comments in read_enum_type | |
1790 | a comma could end it instead of a semicolon. | |
1791 | I don't know where that happens. | |
1792 | Accept either. */ | |
1793 | while (*p && *p != ';' && *p != ',') | |
1794 | { | |
1795 | char *q; | |
1796 | ||
1797 | /* Check for and handle cretinous dbx symbol name | |
1798 | continuation! */ | |
1799 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
1800 | p = next_symbol_text (objfile); | |
1801 | ||
1802 | /* Point to the character after the name | |
1803 | of the enum constant. */ | |
1804 | for (q = p; *q && *q != ':'; q++) | |
1805 | ; | |
1806 | /* Note that the value doesn't matter for | |
1807 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 1808 | add_psymbol_to_list (p, q - p, 1, |
9ce5d3bb DE |
1809 | VAR_DOMAIN, LOC_CONST, |
1810 | &objfile->static_psymbols, 0, | |
1762568f | 1811 | psymtab_language, objfile); |
9ce5d3bb DE |
1812 | /* Point past the name. */ |
1813 | p = q; | |
1814 | /* Skip over the value. */ | |
1815 | while (*p && *p != ',') | |
1816 | p++; | |
1817 | /* Advance past the comma. */ | |
1818 | if (*p) | |
1819 | p++; | |
1820 | } | |
1821 | } | |
1822 | continue; | |
131fe1bb | 1823 | |
9ce5d3bb DE |
1824 | case 'c': |
1825 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 1826 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb | 1827 | VAR_DOMAIN, LOC_CONST, |
1762568f DE |
1828 | &objfile->static_psymbols, 0, |
1829 | psymtab_language, objfile); | |
9ce5d3bb | 1830 | continue; |
6a34fd2f | 1831 | |
9ce5d3bb DE |
1832 | case 'f': |
1833 | if (! pst) | |
1834 | { | |
1835 | int name_len = p - namestring; | |
224c3ddb | 1836 | char *name = (char *) xmalloc (name_len + 1); |
9a619af0 | 1837 | |
9ce5d3bb DE |
1838 | memcpy (name, namestring, name_len); |
1839 | name[name_len] = '\0'; | |
1840 | function_outside_compilation_unit_complaint (name); | |
1841 | xfree (name); | |
1842 | } | |
1843 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1844 | SECT_OFF_TEXT (objfile)); | |
0963b4bd | 1845 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1846 | last_function_name = namestring; |
1847 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1848 | value for the bottom of the text seg in those cases. */ |
9ce5d3bb DE |
1849 | if (nlist.n_value == ANOFFSET (objfile->section_offsets, |
1850 | SECT_OFF_TEXT (objfile)) | |
5e2b427d | 1851 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1852 | { |
1853 | CORE_ADDR minsym_valu = | |
1854 | find_stab_function_addr (namestring, | |
1855 | pst ? pst->filename : NULL, | |
1856 | objfile); | |
9a619af0 | 1857 | |
9ce5d3bb DE |
1858 | /* find_stab_function_addr will return 0 if the minimal |
1859 | symbol wasn't found. (Unfortunately, this might also | |
1860 | be a valid address.) Anyway, if it *does* return 0, | |
1861 | it is likely that the value was set correctly to begin | |
0963b4bd | 1862 | with... */ |
9ce5d3bb DE |
1863 | if (minsym_valu != 0) |
1864 | nlist.n_value = minsym_valu; | |
1865 | } | |
1866 | if (pst && textlow_not_set | |
5e2b427d | 1867 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1868 | { |
1869 | pst->textlow = nlist.n_value; | |
1870 | textlow_not_set = 0; | |
1871 | } | |
1872 | /* End kludge. */ | |
1873 | ||
1874 | /* Keep track of the start of the last function so we | |
1875 | can handle end of function symbols. */ | |
1876 | last_function_start = nlist.n_value; | |
1877 | ||
1878 | /* In reordered executables this function may lie outside | |
1879 | the bounds created by N_SO symbols. If that's the case | |
1880 | use the address of this function as the low bound for | |
1881 | the partial symbol table. */ | |
1882 | if (pst | |
1883 | && (textlow_not_set | |
1884 | || (nlist.n_value < pst->textlow | |
1885 | && (nlist.n_value | |
1886 | != ANOFFSET (objfile->section_offsets, | |
1887 | SECT_OFF_TEXT (objfile)))))) | |
1888 | { | |
1889 | pst->textlow = nlist.n_value; | |
1890 | textlow_not_set = 0; | |
1891 | } | |
04a679b8 | 1892 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1893 | VAR_DOMAIN, LOC_BLOCK, |
1894 | &objfile->static_psymbols, | |
1762568f | 1895 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1896 | continue; |
6a34fd2f | 1897 | |
9ce5d3bb DE |
1898 | /* Global functions were ignored here, but now they |
1899 | are put into the global psymtab like one would expect. | |
1900 | They're also in the minimal symbol table. */ | |
1901 | case 'F': | |
1902 | if (! pst) | |
1903 | { | |
1904 | int name_len = p - namestring; | |
224c3ddb | 1905 | char *name = (char *) xmalloc (name_len + 1); |
9a619af0 | 1906 | |
9ce5d3bb DE |
1907 | memcpy (name, namestring, name_len); |
1908 | name[name_len] = '\0'; | |
1909 | function_outside_compilation_unit_complaint (name); | |
1910 | xfree (name); | |
1911 | } | |
1912 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1913 | SECT_OFF_TEXT (objfile)); | |
0963b4bd | 1914 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1915 | last_function_name = namestring; |
1916 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1917 | value for the bottom of the text seg in those cases. */ |
9ce5d3bb DE |
1918 | if (nlist.n_value == ANOFFSET (objfile->section_offsets, |
1919 | SECT_OFF_TEXT (objfile)) | |
5e2b427d | 1920 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1921 | { |
1922 | CORE_ADDR minsym_valu = | |
1923 | find_stab_function_addr (namestring, | |
1924 | pst ? pst->filename : NULL, | |
1925 | objfile); | |
9a619af0 | 1926 | |
9ce5d3bb DE |
1927 | /* find_stab_function_addr will return 0 if the minimal |
1928 | symbol wasn't found. (Unfortunately, this might also | |
1929 | be a valid address.) Anyway, if it *does* return 0, | |
1930 | it is likely that the value was set correctly to begin | |
0963b4bd | 1931 | with... */ |
9ce5d3bb DE |
1932 | if (minsym_valu != 0) |
1933 | nlist.n_value = minsym_valu; | |
1934 | } | |
1935 | if (pst && textlow_not_set | |
5e2b427d | 1936 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1937 | { |
1938 | pst->textlow = nlist.n_value; | |
1939 | textlow_not_set = 0; | |
1940 | } | |
1941 | /* End kludge. */ | |
1942 | ||
1943 | /* Keep track of the start of the last function so we | |
1944 | can handle end of function symbols. */ | |
1945 | last_function_start = nlist.n_value; | |
1946 | ||
1947 | /* In reordered executables this function may lie outside | |
1948 | the bounds created by N_SO symbols. If that's the case | |
1949 | use the address of this function as the low bound for | |
1950 | the partial symbol table. */ | |
1951 | if (pst | |
1952 | && (textlow_not_set | |
1953 | || (nlist.n_value < pst->textlow | |
1954 | && (nlist.n_value | |
1955 | != ANOFFSET (objfile->section_offsets, | |
1956 | SECT_OFF_TEXT (objfile)))))) | |
1957 | { | |
1958 | pst->textlow = nlist.n_value; | |
1959 | textlow_not_set = 0; | |
1960 | } | |
04a679b8 | 1961 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1962 | VAR_DOMAIN, LOC_BLOCK, |
1963 | &objfile->global_psymbols, | |
1762568f | 1964 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1965 | continue; |
6a34fd2f | 1966 | |
9ce5d3bb DE |
1967 | /* Two things show up here (hopefully); static symbols of |
1968 | local scope (static used inside braces) or extensions | |
1969 | of structure symbols. We can ignore both. */ | |
1970 | case 'V': | |
1971 | case '(': | |
1972 | case '0': | |
1973 | case '1': | |
1974 | case '2': | |
1975 | case '3': | |
1976 | case '4': | |
1977 | case '5': | |
1978 | case '6': | |
1979 | case '7': | |
1980 | case '8': | |
1981 | case '9': | |
1982 | case '-': | |
0963b4bd | 1983 | case '#': /* For symbol identification (used in live ranges). */ |
9ce5d3bb | 1984 | continue; |
6a34fd2f | 1985 | |
9ce5d3bb DE |
1986 | case ':': |
1987 | /* It is a C++ nested symbol. We don't need to record it | |
1988 | (I don't think); if we try to look up foo::bar::baz, | |
1989 | then symbols for the symtab containing foo should get | |
1990 | read in, I think. */ | |
1991 | /* Someone says sun cc puts out symbols like | |
1992 | /foo/baz/maclib::/usr/local/bin/maclib, | |
1993 | which would get here with a symbol type of ':'. */ | |
1994 | continue; | |
6a34fd2f | 1995 | |
9ce5d3bb DE |
1996 | default: |
1997 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
1998 | of a continued stab can show up here. The question is | |
1999 | whether they ever can mimic a normal stab--it would be | |
2000 | nice if not, since we certainly don't want to spend the | |
2001 | time searching to the end of every string looking for | |
2002 | a backslash. */ | |
6a34fd2f | 2003 | |
3e43a32a MS |
2004 | complaint (&symfile_complaints, |
2005 | _("unknown symbol descriptor `%c'"), | |
9ce5d3bb DE |
2006 | p[1]); |
2007 | ||
2008 | /* Ignore it; perhaps it is an extension that we don't | |
2009 | know about. */ | |
2010 | continue; | |
2011 | } | |
131fe1bb | 2012 | } |
6a34fd2f | 2013 | |
9ce5d3bb | 2014 | case N_EXCL: |
6a34fd2f | 2015 | |
83b94be5 | 2016 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
2017 | |
2018 | /* Find the corresponding bincl and mark that psymtab on the | |
0963b4bd | 2019 | psymtab dependency list. */ |
6a34fd2f EZ |
2020 | { |
2021 | struct partial_symtab *needed_pst = | |
2022 | find_corresponding_bincl_psymtab (namestring, nlist.n_value); | |
2023 | ||
2024 | /* If this include file was defined earlier in this file, | |
2025 | leave it alone. */ | |
2026 | if (needed_pst == pst) | |
2027 | continue; | |
2028 | ||
2029 | if (needed_pst) | |
2030 | { | |
2031 | int i; | |
2032 | int found = 0; | |
2033 | ||
2034 | for (i = 0; i < dependencies_used; i++) | |
2035 | if (dependency_list[i] == needed_pst) | |
2036 | { | |
2037 | found = 1; | |
2038 | break; | |
2039 | } | |
2040 | ||
2041 | /* If it's already in the list, skip the rest. */ | |
2042 | if (found) | |
2043 | continue; | |
2044 | ||
2045 | dependency_list[dependencies_used++] = needed_pst; | |
2046 | if (dependencies_used >= dependencies_allocated) | |
2047 | { | |
2048 | struct partial_symtab **orig = dependency_list; | |
9a619af0 | 2049 | |
6a34fd2f EZ |
2050 | dependency_list = |
2051 | (struct partial_symtab **) | |
2052 | alloca ((dependencies_allocated *= 2) | |
2053 | * sizeof (struct partial_symtab *)); | |
4efb68b1 | 2054 | memcpy (dependency_list, orig, |
6a34fd2f EZ |
2055 | (dependencies_used |
2056 | * sizeof (struct partial_symtab *))); | |
2057 | #ifdef DEBUG_INFO | |
063e58ba | 2058 | fprintf_unfiltered (gdb_stderr, |
3e43a32a MS |
2059 | "Had to reallocate " |
2060 | "dependency list.\n"); | |
063e58ba MD |
2061 | fprintf_unfiltered (gdb_stderr, |
2062 | "New dependencies allocated: %d\n", | |
6a34fd2f EZ |
2063 | dependencies_allocated); |
2064 | #endif | |
2065 | } | |
2066 | } | |
2067 | } | |
2068 | continue; | |
2069 | ||
9ce5d3bb | 2070 | case N_ENDM: |
6a34fd2f | 2071 | /* Solaris 2 end of module, finish current partial symbol table. |
8763cede | 2072 | dbx_end_psymtab will set pst->texthigh to the proper value, which |
6a34fd2f EZ |
2073 | is necessary if a module compiled without debugging info |
2074 | follows this module. */ | |
5e2b427d | 2075 | if (pst && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 2076 | { |
8763cede DE |
2077 | dbx_end_psymtab (objfile, pst, |
2078 | psymtab_include_list, includes_used, | |
2079 | symnum * symbol_size, | |
2080 | (CORE_ADDR) 0, dependency_list, | |
2081 | dependencies_used, textlow_not_set); | |
9ce5d3bb DE |
2082 | pst = (struct partial_symtab *) 0; |
2083 | includes_used = 0; | |
2084 | dependencies_used = 0; | |
578933ab | 2085 | has_line_numbers = 0; |
9ce5d3bb | 2086 | } |
6a34fd2f | 2087 | continue; |
c906108c | 2088 | |
9ce5d3bb | 2089 | case N_RBRAC: |
6a34fd2f EZ |
2090 | #ifdef HANDLE_RBRAC |
2091 | HANDLE_RBRAC (nlist.n_value); | |
2092 | continue; | |
2093 | #endif | |
9ce5d3bb DE |
2094 | case N_EINCL: |
2095 | case N_DSLINE: | |
2096 | case N_BSLINE: | |
2097 | case N_SSYM: /* Claim: Structure or union element. | |
063e58ba | 2098 | Hopefully, I can ignore this. */ |
0963b4bd | 2099 | case N_ENTRY: /* Alternate entry point; can ignore. */ |
9ce5d3bb DE |
2100 | case N_MAIN: /* Can definitely ignore this. */ |
2101 | case N_CATCH: /* These are GNU C++ extensions */ | |
0963b4bd | 2102 | case N_EHDECL: /* that can safely be ignored here. */ |
9ce5d3bb DE |
2103 | case N_LENG: |
2104 | case N_BCOMM: | |
2105 | case N_ECOMM: | |
2106 | case N_ECOML: | |
2107 | case N_FNAME: | |
2108 | case N_SLINE: | |
2109 | case N_RSYM: | |
2110 | case N_PSYM: | |
ec48dc8b PM |
2111 | case N_BNSYM: |
2112 | case N_ENSYM: | |
9ce5d3bb DE |
2113 | case N_LBRAC: |
2114 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
2115 | case N_DEFD: /* GNU Modula-2 */ | |
2116 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
2117 | ||
0963b4bd | 2118 | case N_OBJ: /* Useless types from Solaris. */ |
9ce5d3bb DE |
2119 | case N_OPT: |
2120 | case N_PATCH: | |
0963b4bd | 2121 | /* These symbols aren't interesting; don't worry about them. */ |
6a34fd2f EZ |
2122 | continue; |
2123 | ||
9ce5d3bb | 2124 | default: |
6a34fd2f EZ |
2125 | /* If we haven't found it yet, ignore it. It's probably some |
2126 | new type we don't know about yet. */ | |
bb599908 | 2127 | unknown_symtype_complaint (hex_string (nlist.n_type)); |
6a34fd2f EZ |
2128 | continue; |
2129 | } | |
c906108c SS |
2130 | } |
2131 | ||
2132 | /* If there's stuff to be cleaned up, clean it up. */ | |
c906108c SS |
2133 | if (pst) |
2134 | { | |
2135 | /* Don't set pst->texthigh lower than it already is. */ | |
2136 | CORE_ADDR text_end = | |
6a34fd2f | 2137 | (lowest_text_address == (CORE_ADDR) -1 |
063e58ba MD |
2138 | ? (text_addr + ANOFFSET (objfile->section_offsets, |
2139 | SECT_OFF_TEXT (objfile))) | |
6a34fd2f EZ |
2140 | : lowest_text_address) |
2141 | + text_size; | |
c906108c | 2142 | |
8763cede DE |
2143 | dbx_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
2144 | symnum * symbol_size, | |
2145 | text_end > pst->texthigh ? text_end : pst->texthigh, | |
2146 | dependency_list, dependencies_used, textlow_not_set); | |
c906108c SS |
2147 | } |
2148 | ||
2149 | do_cleanups (back_to); | |
2150 | } | |
2151 | ||
2152 | /* Allocate and partially fill a partial symtab. It will be | |
2153 | completely filled at the end of the symbol list. | |
2154 | ||
2155 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2156 | is the address relative to which its symbols are (incremental) or 0 | |
0963b4bd | 2157 | (normal). */ |
c906108c | 2158 | |
d4f3574e | 2159 | static struct partial_symtab * |
fba45db2 KB |
2160 | start_psymtab (struct objfile *objfile, char *filename, CORE_ADDR textlow, |
2161 | int ldsymoff, struct partial_symbol **global_syms, | |
2162 | struct partial_symbol **static_syms) | |
c906108c SS |
2163 | { |
2164 | struct partial_symtab *result = | |
18a94d75 DE |
2165 | start_psymtab_common (objfile, filename, textlow, |
2166 | global_syms, static_syms); | |
c906108c | 2167 | |
8d749320 SM |
2168 | result->read_symtab_private = |
2169 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 2170 | LDSYMOFF (result) = ldsymoff; |
257e7a09 | 2171 | result->read_symtab = dbx_read_symtab; |
c5aa993b JM |
2172 | SYMBOL_SIZE (result) = symbol_size; |
2173 | SYMBOL_OFFSET (result) = symbol_table_offset; | |
2174 | STRING_OFFSET (result) = string_table_offset; | |
2175 | FILE_STRING_OFFSET (result) = file_string_table_offset; | |
c906108c | 2176 | |
0963b4bd | 2177 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
2178 | psymtab_language = deduce_language_from_filename (filename); |
2179 | ||
2180 | return result; | |
2181 | } | |
2182 | ||
0963b4bd | 2183 | /* Close off the current usage of PST. |
c906108c SS |
2184 | Returns PST or NULL if the partial symtab was empty and thrown away. |
2185 | ||
2186 | FIXME: List variables and peculiarities of same. */ | |
2187 | ||
2188 | struct partial_symtab * | |
8763cede DE |
2189 | dbx_end_psymtab (struct objfile *objfile, struct partial_symtab *pst, |
2190 | const char **include_list, int num_includes, | |
2191 | int capping_symbol_offset, CORE_ADDR capping_text, | |
2192 | struct partial_symtab **dependency_list, | |
2193 | int number_dependencies, | |
2194 | int textlow_not_set) | |
c906108c SS |
2195 | { |
2196 | int i; | |
5e2b427d | 2197 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
2198 | |
2199 | if (capping_symbol_offset != -1) | |
c5aa993b | 2200 | LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst); |
5afc051b | 2201 | pst->texthigh = capping_text; |
c906108c | 2202 | |
c906108c SS |
2203 | /* Under Solaris, the N_SO symbols always have a value of 0, |
2204 | instead of the usual address of the .o file. Therefore, | |
2205 | we have to do some tricks to fill in texthigh and textlow. | |
6a34fd2f | 2206 | The first trick is: if we see a static |
c906108c SS |
2207 | or global function, and the textlow for the current pst |
2208 | is not set (ie: textlow_not_set), then we use that function's | |
2209 | address for the textlow of the pst. */ | |
2210 | ||
2211 | /* Now, to fill in texthigh, we remember the last function seen | |
6a34fd2f | 2212 | in the .o file. Also, there's a hack in |
c906108c SS |
2213 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field |
2214 | to here via the misc_info field. Therefore, we can fill in | |
2215 | a reliable texthigh by taking the address plus size of the | |
2216 | last function in the file. */ | |
2217 | ||
203c3895 | 2218 | if (pst->texthigh == 0 && last_function_name |
5e2b427d | 2219 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
c906108c SS |
2220 | { |
2221 | char *p; | |
2222 | int n; | |
3b7344d5 | 2223 | struct bound_minimal_symbol minsym; |
c906108c SS |
2224 | |
2225 | p = strchr (last_function_name, ':'); | |
2226 | if (p == NULL) | |
2227 | p = last_function_name; | |
2228 | n = p - last_function_name; | |
224c3ddb | 2229 | p = (char *) alloca (n + 2); |
c906108c SS |
2230 | strncpy (p, last_function_name, n); |
2231 | p[n] = 0; | |
c5aa993b | 2232 | |
c906108c | 2233 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
3b7344d5 | 2234 | if (minsym.minsym == NULL) |
c906108c SS |
2235 | { |
2236 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
2237 | try again with an appended underscore if the minimal symbol | |
2238 | was not found. */ | |
2239 | p[n] = '_'; | |
2240 | p[n + 1] = 0; | |
2241 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); | |
2242 | } | |
2243 | ||
3b7344d5 | 2244 | if (minsym.minsym) |
77e371c0 | 2245 | pst->texthigh = (BMSYMBOL_VALUE_ADDRESS (minsym) |
3b7344d5 | 2246 | + MSYMBOL_SIZE (minsym.minsym)); |
c906108c SS |
2247 | |
2248 | last_function_name = NULL; | |
2249 | } | |
2250 | ||
5e2b427d | 2251 | if (!gdbarch_sofun_address_maybe_missing (gdbarch)) |
203c3895 | 2252 | ; |
0963b4bd | 2253 | /* This test will be true if the last .o file is only data. */ |
203c3895 | 2254 | else if (textlow_not_set) |
5afc051b | 2255 | pst->textlow = pst->texthigh; |
c906108c SS |
2256 | else |
2257 | { | |
2258 | struct partial_symtab *p1; | |
2259 | ||
2260 | /* If we know our own starting text address, then walk through all other | |
c5aa993b JM |
2261 | psymtabs for this objfile, and if any didn't know their ending text |
2262 | address, set it to our starting address. Take care to not set our | |
2263 | own ending address to our starting address, nor to set addresses on | |
2264 | `dependency' files that have both textlow and texthigh zero. */ | |
c906108c SS |
2265 | |
2266 | ALL_OBJFILE_PSYMTABS (objfile, p1) | |
c5aa993b | 2267 | { |
5afc051b | 2268 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) |
c5aa993b | 2269 | { |
5afc051b | 2270 | p1->texthigh = pst->textlow; |
0963b4bd MS |
2271 | /* If this file has only data, then make textlow match |
2272 | texthigh. */ | |
5afc051b JB |
2273 | if (p1->textlow == 0) |
2274 | p1->textlow = p1->texthigh; | |
c5aa993b JM |
2275 | } |
2276 | } | |
c906108c SS |
2277 | } |
2278 | ||
2279 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
c906108c | 2280 | |
8763cede | 2281 | end_psymtab_common (objfile, pst); |
c906108c SS |
2282 | |
2283 | pst->number_of_dependencies = number_dependencies; | |
2284 | if (number_dependencies) | |
2285 | { | |
8d749320 SM |
2286 | pst->dependencies = XOBNEWVEC (&objfile->objfile_obstack, |
2287 | struct partial_symtab *, | |
2288 | number_dependencies); | |
c906108c | 2289 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2290 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2291 | } |
2292 | else | |
2293 | pst->dependencies = 0; | |
2294 | ||
2295 | for (i = 0; i < num_includes; i++) | |
2296 | { | |
2297 | struct partial_symtab *subpst = | |
9a619af0 | 2298 | allocate_psymtab (include_list[i], objfile); |
c906108c | 2299 | |
c906108c | 2300 | subpst->read_symtab_private = |
8d749320 | 2301 | XOBNEW (&objfile->objfile_obstack, struct symloc); |
c5aa993b JM |
2302 | LDSYMOFF (subpst) = |
2303 | LDSYMLEN (subpst) = | |
5afc051b JB |
2304 | subpst->textlow = |
2305 | subpst->texthigh = 0; | |
c906108c SS |
2306 | |
2307 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2308 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 SM |
2309 | subpst->dependencies = |
2310 | XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
c906108c SS |
2311 | subpst->dependencies[0] = pst; |
2312 | subpst->number_of_dependencies = 1; | |
2313 | ||
2314 | subpst->globals_offset = | |
2315 | subpst->n_global_syms = | |
c5aa993b JM |
2316 | subpst->statics_offset = |
2317 | subpst->n_static_syms = 0; | |
c906108c SS |
2318 | |
2319 | subpst->readin = 0; | |
43f3e411 | 2320 | subpst->compunit_symtab = 0; |
c906108c SS |
2321 | subpst->read_symtab = pst->read_symtab; |
2322 | } | |
2323 | ||
c906108c SS |
2324 | if (num_includes == 0 |
2325 | && number_dependencies == 0 | |
2326 | && pst->n_global_syms == 0 | |
2327 | && pst->n_static_syms == 0 | |
2328 | && has_line_numbers == 0) | |
2329 | { | |
2330 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2331 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2332 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b JM |
2333 | any symbols in them. There can be a lot of them. But this check |
2334 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
2335 | is not empty, but we don't realize that. Fixing that without slowing | |
2336 | things down might be tricky. */ | |
c906108c | 2337 | |
5c80ed9d | 2338 | discard_psymtab (objfile, pst); |
c906108c SS |
2339 | |
2340 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2341 | pst = NULL; |
c906108c SS |
2342 | } |
2343 | return pst; | |
2344 | } | |
2345 | \f | |
2346 | static void | |
5c80ed9d | 2347 | dbx_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst) |
c906108c SS |
2348 | { |
2349 | struct cleanup *old_chain; | |
2350 | int i; | |
c5aa993b | 2351 | |
c906108c SS |
2352 | if (pst->readin) |
2353 | { | |
0963b4bd MS |
2354 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. " |
2355 | "Shouldn't happen.\n", | |
c5aa993b | 2356 | pst->filename); |
c906108c SS |
2357 | return; |
2358 | } | |
2359 | ||
0963b4bd | 2360 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
2361 | for (i = 0; i < pst->number_of_dependencies; i++) |
2362 | if (!pst->dependencies[i]->readin) | |
2363 | { | |
2364 | /* Inform about additional files that need to be read in. */ | |
2365 | if (info_verbose) | |
2366 | { | |
2367 | fputs_filtered (" ", gdb_stdout); | |
2368 | wrap_here (""); | |
2369 | fputs_filtered ("and ", gdb_stdout); | |
2370 | wrap_here (""); | |
2371 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 2372 | wrap_here (""); /* Flush output. */ |
c906108c SS |
2373 | gdb_flush (gdb_stdout); |
2374 | } | |
5c80ed9d | 2375 | dbx_psymtab_to_symtab_1 (objfile, pst->dependencies[i]); |
c906108c SS |
2376 | } |
2377 | ||
0963b4bd | 2378 | if (LDSYMLEN (pst)) /* Otherwise it's a dummy. */ |
c906108c SS |
2379 | { |
2380 | /* Init stuff necessary for reading in symbols */ | |
2381 | stabsread_init (); | |
2382 | buildsym_init (); | |
a0b3c4fd | 2383 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c SS |
2384 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
2385 | symbol_size = SYMBOL_SIZE (pst); | |
2386 | ||
0963b4bd | 2387 | /* Read in this file's symbols. */ |
5c80ed9d TT |
2388 | bfd_seek (objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); |
2389 | read_ofile_symtab (objfile, pst); | |
c906108c SS |
2390 | |
2391 | do_cleanups (old_chain); | |
2392 | } | |
2393 | ||
2394 | pst->readin = 1; | |
2395 | } | |
2396 | ||
2397 | /* Read in all of the symbols for a given psymtab for real. | |
257e7a09 | 2398 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
2399 | |
2400 | static void | |
257e7a09 | 2401 | dbx_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 2402 | { |
257e7a09 | 2403 | if (self->readin) |
c906108c | 2404 | { |
0963b4bd MS |
2405 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. " |
2406 | "Shouldn't happen.\n", | |
257e7a09 | 2407 | self->filename); |
c906108c SS |
2408 | return; |
2409 | } | |
2410 | ||
257e7a09 | 2411 | if (LDSYMLEN (self) || self->number_of_dependencies) |
c906108c | 2412 | { |
57cee33a TT |
2413 | struct cleanup *back_to; |
2414 | ||
c906108c | 2415 | /* Print the message now, before reading the string table, |
c5aa993b | 2416 | to avoid disconcerting pauses. */ |
c906108c SS |
2417 | if (info_verbose) |
2418 | { | |
257e7a09 | 2419 | printf_filtered ("Reading in symbols for %s...", self->filename); |
c906108c SS |
2420 | gdb_flush (gdb_stdout); |
2421 | } | |
2422 | ||
c906108c SS |
2423 | next_symbol_text_func = dbx_next_symbol_text; |
2424 | ||
57cee33a TT |
2425 | back_to = make_cleanup (null_cleanup, NULL); |
2426 | ||
5c80ed9d | 2427 | if (DBX_STAB_SECTION (objfile)) |
086df311 DJ |
2428 | { |
2429 | stabs_data | |
5c80ed9d TT |
2430 | = symfile_relocate_debug_section (objfile, |
2431 | DBX_STAB_SECTION (objfile), | |
086df311 | 2432 | NULL); |
9a619af0 | 2433 | |
086df311 | 2434 | if (stabs_data) |
57cee33a | 2435 | make_cleanup (free_current_contents, (void *) &stabs_data); |
086df311 DJ |
2436 | } |
2437 | ||
257e7a09 | 2438 | dbx_psymtab_to_symtab_1 (objfile, self); |
c906108c | 2439 | |
57cee33a | 2440 | do_cleanups (back_to); |
086df311 | 2441 | |
c906108c SS |
2442 | /* Match with global symbols. This only needs to be done once, |
2443 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 2444 | scan_file_globals (objfile); |
c906108c SS |
2445 | |
2446 | /* Finish up the debug error message. */ | |
2447 | if (info_verbose) | |
2448 | printf_filtered ("done.\n"); | |
2449 | } | |
2450 | } | |
2451 | ||
0963b4bd | 2452 | /* Read in a defined section of a specific object file's symbols. */ |
c5aa993b | 2453 | |
c906108c | 2454 | static void |
5c80ed9d | 2455 | read_ofile_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 2456 | { |
52f0bd74 AC |
2457 | char *namestring; |
2458 | struct external_nlist *bufp; | |
c906108c SS |
2459 | struct internal_nlist nlist; |
2460 | unsigned char type; | |
2461 | unsigned max_symnum; | |
52f0bd74 | 2462 | bfd *abfd; |
c906108c SS |
2463 | int sym_offset; /* Offset to start of symbols to read */ |
2464 | int sym_size; /* Size of symbols to read */ | |
2465 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
2466 | int text_size; /* Size of text segment for symbols */ | |
2467 | struct section_offsets *section_offsets; | |
2468 | ||
c5aa993b JM |
2469 | sym_offset = LDSYMOFF (pst); |
2470 | sym_size = LDSYMLEN (pst); | |
5afc051b JB |
2471 | text_offset = pst->textlow; |
2472 | text_size = pst->texthigh - pst->textlow; | |
18a94d75 | 2473 | section_offsets = objfile->section_offsets; |
c906108c | 2474 | |
dd707e8e | 2475 | dbxread_objfile = objfile; |
c906108c SS |
2476 | |
2477 | stringtab_global = DBX_STRINGTAB (objfile); | |
46212e0b | 2478 | set_last_source_file (NULL); |
c906108c SS |
2479 | |
2480 | abfd = objfile->obfd; | |
0963b4bd | 2481 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol. */ |
c906108c | 2482 | symbuf_end = symbuf_idx = 0; |
086df311 DJ |
2483 | symbuf_read = 0; |
2484 | symbuf_left = sym_offset + sym_size; | |
c906108c SS |
2485 | |
2486 | /* It is necessary to actually read one symbol *before* the start | |
2487 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
2488 | occurs before the N_SO symbol. | |
2489 | ||
2490 | Detecting this in read_dbx_symtab | |
2491 | would slow down initial readin, so we look for it here instead. */ | |
c5aa993b | 2492 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c | 2493 | { |
086df311 | 2494 | stabs_seek (sym_offset - symbol_size); |
c906108c SS |
2495 | fill_symbuf (abfd); |
2496 | bufp = &symbuf[symbuf_idx++]; | |
2497 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2498 | OBJSTAT (objfile, n_stabs++); | |
2499 | ||
83b94be5 | 2500 | namestring = set_namestring (objfile, &nlist); |
c906108c SS |
2501 | |
2502 | processing_gcc_compilation = 0; | |
2503 | if (nlist.n_type == N_TEXT) | |
2504 | { | |
2505 | const char *tempstring = namestring; | |
2506 | ||
91f54576 | 2507 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2508 | processing_gcc_compilation = 1; |
91f54576 | 2509 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2510 | processing_gcc_compilation = 2; |
2511 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) | |
2512 | ++tempstring; | |
61012eef | 2513 | if (startswith (tempstring, "__gnu_compiled")) |
c906108c SS |
2514 | processing_gcc_compilation = 2; |
2515 | } | |
c906108c SS |
2516 | } |
2517 | else | |
2518 | { | |
2519 | /* The N_SO starting this symtab is the first symbol, so we | |
c5aa993b JM |
2520 | better not check the symbol before it. I'm not this can |
2521 | happen, but it doesn't hurt to check for it. */ | |
086df311 | 2522 | stabs_seek (sym_offset); |
c906108c SS |
2523 | processing_gcc_compilation = 0; |
2524 | } | |
2525 | ||
2526 | if (symbuf_idx == symbuf_end) | |
2527 | fill_symbuf (abfd); | |
2528 | bufp = &symbuf[symbuf_idx]; | |
2529 | if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO) | |
8a3fe4f8 | 2530 | error (_("First symbol in segment of executable not a source symbol")); |
c906108c SS |
2531 | |
2532 | max_symnum = sym_size / symbol_size; | |
2533 | ||
2534 | for (symnum = 0; | |
2535 | symnum < max_symnum; | |
2536 | symnum++) | |
2537 | { | |
0963b4bd | 2538 | QUIT; /* Allow this to be interruptable. */ |
c906108c | 2539 | if (symbuf_idx == symbuf_end) |
c5aa993b | 2540 | fill_symbuf (abfd); |
c906108c SS |
2541 | bufp = &symbuf[symbuf_idx++]; |
2542 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2543 | OBJSTAT (objfile, n_stabs++); | |
2544 | ||
2545 | type = bfd_h_get_8 (abfd, bufp->e_type); | |
2546 | ||
83b94be5 | 2547 | namestring = set_namestring (objfile, &nlist); |
c906108c | 2548 | |
c5aa993b JM |
2549 | if (type & N_STAB) |
2550 | { | |
7b1f21e5 PP |
2551 | if (sizeof (nlist.n_value) > 4 |
2552 | /* We are a 64-bit debugger debugging a 32-bit program. */ | |
2553 | && (type == N_LSYM || type == N_PSYM)) | |
2554 | /* We have to be careful with the n_value in the case of N_LSYM | |
2555 | and N_PSYM entries, because they are signed offsets from frame | |
2556 | pointer, but we actually read them as unsigned 32-bit values. | |
2557 | This is not a problem for 32-bit debuggers, for which negative | |
2558 | values end up being interpreted correctly (as negative | |
2559 | offsets) due to integer overflow. | |
2560 | But we need to sign-extend the value for 64-bit debuggers, | |
2561 | or we'll end up interpreting negative values as very large | |
2562 | positive offsets. */ | |
2563 | nlist.n_value = (nlist.n_value ^ 0x80000000) - 0x80000000; | |
c906108c SS |
2564 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
2565 | namestring, section_offsets, objfile); | |
c5aa993b | 2566 | } |
c906108c | 2567 | /* We skip checking for a new .o or -l file; that should never |
0963b4bd | 2568 | happen in this routine. */ |
c906108c SS |
2569 | else if (type == N_TEXT) |
2570 | { | |
2571 | /* I don't think this code will ever be executed, because | |
2572 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
2573 | the N_SO symbol which starts this source file. | |
2574 | However, there is no reason not to accept | |
2575 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
2576 | ||
91f54576 | 2577 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2578 | processing_gcc_compilation = 1; |
91f54576 | 2579 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2580 | processing_gcc_compilation = 2; |
c906108c | 2581 | } |
c5aa993b | 2582 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
9a619af0 | 2583 | || type == (unsigned char) N_NBTEXT) |
c5aa993b | 2584 | { |
c906108c SS |
2585 | /* Global symbol: see if we came across a dbx defintion for |
2586 | a corresponding symbol. If so, store the value. Remove | |
2587 | syms from the chain when their values are stored, but | |
2588 | search the whole chain, as there may be several syms from | |
0963b4bd | 2589 | different files with the same name. */ |
c906108c SS |
2590 | /* This is probably not true. Since the files will be read |
2591 | in one at a time, each reference to a global symbol will | |
0963b4bd MS |
2592 | be satisfied in each file as it appears. So we skip this |
2593 | section. */ | |
c906108c | 2594 | ; |
c5aa993b | 2595 | } |
c906108c SS |
2596 | } |
2597 | ||
c906108c SS |
2598 | /* In a Solaris elf file, this variable, which comes from the |
2599 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
0963b4bd | 2600 | which comes from pst->textlow is correct. */ |
c906108c SS |
2601 | if (last_source_start_addr == 0) |
2602 | last_source_start_addr = text_offset; | |
2603 | ||
2604 | /* In reordered executables last_source_start_addr may not be the | |
2605 | lower bound for this symtab, instead use text_offset which comes | |
5afc051b | 2606 | from pst->textlow which is correct. */ |
c906108c SS |
2607 | if (last_source_start_addr > text_offset) |
2608 | last_source_start_addr = text_offset; | |
2609 | ||
43f3e411 DE |
2610 | pst->compunit_symtab = end_symtab (text_offset + text_size, |
2611 | SECT_OFF_TEXT (objfile)); | |
c906108c | 2612 | |
c906108c | 2613 | end_stabs (); |
e9112110 | 2614 | |
dd707e8e | 2615 | dbxread_objfile = NULL; |
c906108c | 2616 | } |
c906108c | 2617 | \f |
c5aa993b | 2618 | |
195a3f6c TT |
2619 | /* Record the namespace that the function defined by SYMBOL was |
2620 | defined in, if necessary. BLOCK is the associated block; use | |
2621 | OBSTACK for allocation. */ | |
2622 | ||
2623 | static void | |
2624 | cp_set_block_scope (const struct symbol *symbol, | |
2625 | struct block *block, | |
2626 | struct obstack *obstack) | |
2627 | { | |
2628 | if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) | |
2629 | { | |
2630 | /* Try to figure out the appropriate namespace from the | |
2631 | demangled name. */ | |
2632 | ||
2633 | /* FIXME: carlton/2003-04-15: If the function in question is | |
2634 | a method of a class, the name will actually include the | |
2635 | name of the class as well. This should be harmless, but | |
2636 | is a little unfortunate. */ | |
2637 | ||
2638 | const char *name = SYMBOL_DEMANGLED_NAME (symbol); | |
2639 | unsigned int prefix_len = cp_entire_prefix_len (name); | |
2640 | ||
2641 | block_set_scope (block, | |
224c3ddb | 2642 | (const char *) obstack_copy0 (obstack, name, prefix_len), |
195a3f6c TT |
2643 | obstack); |
2644 | } | |
2645 | } | |
2646 | ||
c906108c SS |
2647 | /* This handles a single symbol from the symbol-file, building symbols |
2648 | into a GDB symtab. It takes these arguments and an implicit argument. | |
2649 | ||
2650 | TYPE is the type field of the ".stab" symbol entry. | |
2651 | DESC is the desc field of the ".stab" entry. | |
2652 | VALU is the value field of the ".stab" entry. | |
2653 | NAME is the symbol name, in our address space. | |
e31272c3 MK |
2654 | SECTION_OFFSETS is a set of amounts by which the sections of this |
2655 | object file were relocated when it was loaded into memory. Note | |
2656 | that these section_offsets are not the objfile->section_offsets but | |
2657 | the pst->section_offsets. All symbols that refer to memory | |
2658 | locations need to be offset by these amounts. | |
2659 | OBJFILE is the object file from which we are reading symbols. It | |
2660 | is used in end_symtab. */ | |
c906108c SS |
2661 | |
2662 | void | |
fba45db2 | 2663 | process_one_symbol (int type, int desc, CORE_ADDR valu, char *name, |
3189cb12 | 2664 | const struct section_offsets *section_offsets, |
fba45db2 | 2665 | struct objfile *objfile) |
c906108c | 2666 | { |
5e2b427d | 2667 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 2668 | struct context_stack *newobj; |
e31272c3 MK |
2669 | /* This remembers the address of the start of a function. It is |
2670 | used because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries | |
2671 | are relative to the current function's start address. On systems | |
2672 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, | |
2673 | and is used to relocate these symbol types rather than | |
2674 | SECTION_OFFSETS. */ | |
c906108c SS |
2675 | static CORE_ADDR function_start_offset; |
2676 | ||
e31272c3 MK |
2677 | /* This holds the address of the start of a function, without the |
2678 | system peculiarities of function_start_offset. */ | |
a1b9830c DJ |
2679 | static CORE_ADDR last_function_start; |
2680 | ||
54c7009d EZ |
2681 | /* If this is nonzero, we've seen an N_SLINE since the start of the |
2682 | current function. We use this to tell us to move the first sline | |
2683 | to the beginning of the function regardless of what its given | |
0963b4bd | 2684 | value is. */ |
a1b9830c DJ |
2685 | static int sline_found_in_function = 1; |
2686 | ||
e31272c3 MK |
2687 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this |
2688 | source file. Used to detect the SunPRO solaris compiler. */ | |
c906108c SS |
2689 | static int n_opt_found; |
2690 | ||
c906108c | 2691 | if (!block_address_function_relative) |
e31272c3 MK |
2692 | { |
2693 | /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the | |
2694 | function start address, so just use the text offset. */ | |
2695 | function_start_offset = | |
2696 | ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); | |
2697 | } | |
c906108c | 2698 | |
e31272c3 MK |
2699 | /* Something is wrong if we see real data before seeing a source |
2700 | file name. */ | |
c906108c | 2701 | |
46212e0b | 2702 | if (get_last_source_file () == NULL && type != (unsigned char) N_SO) |
c906108c SS |
2703 | { |
2704 | /* Ignore any symbols which appear before an N_SO symbol. | |
c5aa993b JM |
2705 | Currently no one puts symbols there, but we should deal |
2706 | gracefully with the case. A complain()t might be in order, | |
2707 | but this should not be an error (). */ | |
c906108c SS |
2708 | return; |
2709 | } | |
2710 | ||
2711 | switch (type) | |
2712 | { | |
2713 | case N_FUN: | |
2714 | case N_FNAME: | |
2715 | ||
2716 | if (*name == '\000') | |
2717 | { | |
e31272c3 MK |
2718 | /* This N_FUN marks the end of a function. This closes off |
2719 | the current block. */ | |
df8a16a1 | 2720 | struct block *block; |
0c5e171a KD |
2721 | |
2722 | if (context_stack_depth <= 0) | |
2723 | { | |
23136709 | 2724 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2725 | break; |
2726 | } | |
2727 | ||
6b37567a JJ |
2728 | /* The following check is added before recording line 0 at |
2729 | end of function so as to handle hand-generated stabs | |
e31272c3 MK |
2730 | which may have an N_FUN stabs at the end of the function, |
2731 | but no N_SLINE stabs. */ | |
6b37567a | 2732 | if (sline_found_in_function) |
fbf65064 UW |
2733 | { |
2734 | CORE_ADDR addr = last_function_start + valu; | |
9a619af0 | 2735 | |
fbf65064 UW |
2736 | record_line (current_subfile, 0, |
2737 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
2738 | } | |
6b37567a | 2739 | |
c906108c | 2740 | within_function = 0; |
fe978cb0 | 2741 | newobj = pop_context (); |
c906108c SS |
2742 | |
2743 | /* Make a block for the local symbols within. */ | |
fe978cb0 | 2744 | block = finish_block (newobj->name, &local_symbols, |
63e43d3a | 2745 | newobj->old_blocks, NULL, |
fe978cb0 | 2746 | newobj->start_addr, newobj->start_addr + valu); |
df8a16a1 DJ |
2747 | |
2748 | /* For C++, set the block's scope. */ | |
fe978cb0 PA |
2749 | if (SYMBOL_LANGUAGE (newobj->name) == language_cplus) |
2750 | cp_set_block_scope (newobj->name, block, &objfile->objfile_obstack); | |
c906108c SS |
2751 | |
2752 | /* May be switching to an assembler file which may not be using | |
2753 | block relative stabs, so reset the offset. */ | |
2754 | if (block_address_function_relative) | |
2755 | function_start_offset = 0; | |
2756 | ||
2757 | break; | |
2758 | } | |
2759 | ||
a1b9830c DJ |
2760 | sline_found_in_function = 0; |
2761 | ||
e31272c3 | 2762 | /* Relocate for dynamic loading. */ |
b8fbeb18 | 2763 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
85ddcc70 | 2764 | valu = gdbarch_addr_bits_remove (gdbarch, valu); |
a1b9830c DJ |
2765 | last_function_start = valu; |
2766 | ||
c906108c SS |
2767 | goto define_a_symbol; |
2768 | ||
2769 | case N_LBRAC: | |
2770 | /* This "symbol" just indicates the start of an inner lexical | |
c5aa993b | 2771 | context within a function. */ |
c906108c SS |
2772 | |
2773 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2774 | if (n_opt_found && desc == 1) | |
2775 | break; | |
2776 | ||
2777 | if (block_address_function_relative) | |
2778 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
2779 | valu += function_start_offset; | |
2780 | else | |
2781 | /* On most machines, the block addresses are relative to the | |
2782 | N_SO, the linker did not relocate them (sigh). */ | |
2783 | valu += last_source_start_addr; | |
2784 | ||
ab8b8aca | 2785 | push_context (desc, valu); |
c906108c SS |
2786 | break; |
2787 | ||
2788 | case N_RBRAC: | |
2789 | /* This "symbol" just indicates the end of an inner lexical | |
c5aa993b | 2790 | context that was started with N_LBRAC. */ |
c906108c SS |
2791 | |
2792 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2793 | if (n_opt_found && desc == 1) | |
2794 | break; | |
2795 | ||
2796 | if (block_address_function_relative) | |
2797 | /* Relocate for Sun ELF acc fn-relative syms. */ | |
2798 | valu += function_start_offset; | |
2799 | else | |
2800 | /* On most machines, the block addresses are relative to the | |
2801 | N_SO, the linker did not relocate them (sigh). */ | |
2802 | valu += last_source_start_addr; | |
2803 | ||
0c5e171a KD |
2804 | if (context_stack_depth <= 0) |
2805 | { | |
23136709 | 2806 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2807 | break; |
2808 | } | |
2809 | ||
fe978cb0 PA |
2810 | newobj = pop_context (); |
2811 | if (desc != newobj->depth) | |
23136709 | 2812 | lbrac_mismatch_complaint (symnum); |
c906108c | 2813 | |
35156bae | 2814 | if (local_symbols != NULL) |
1f077a3e | 2815 | { |
35156bae DJ |
2816 | /* GCC development snapshots from March to December of |
2817 | 2000 would output N_LSYM entries after N_LBRAC | |
2818 | entries. As a consequence, these symbols are simply | |
2819 | discarded. Complain if this is the case. */ | |
3e43a32a MS |
2820 | complaint (&symfile_complaints, |
2821 | _("misplaced N_LBRAC entry; discarding local " | |
2822 | "symbols which have no enclosing block")); | |
1f077a3e | 2823 | } |
fe978cb0 | 2824 | local_symbols = newobj->locals; |
c906108c | 2825 | |
35156bae | 2826 | if (context_stack_depth > 1) |
c906108c | 2827 | { |
e31272c3 MK |
2828 | /* This is not the outermost LBRAC...RBRAC pair in the |
2829 | function, its local symbols preceded it, and are the ones | |
2830 | just recovered from the context stack. Define the block | |
2831 | for them (but don't bother if the block contains no | |
2832 | symbols. Should we complain on blocks without symbols? | |
2833 | I can't think of any useful purpose for them). */ | |
c906108c SS |
2834 | if (local_symbols != NULL) |
2835 | { | |
e31272c3 MK |
2836 | /* Muzzle a compiler bug that makes end < start. |
2837 | ||
2838 | ??? Which compilers? Is this ever harmful?. */ | |
fe978cb0 | 2839 | if (newobj->start_addr > valu) |
c906108c | 2840 | { |
23136709 | 2841 | complaint (&symfile_complaints, |
e2e0b3e5 | 2842 | _("block start larger than block end")); |
fe978cb0 | 2843 | newobj->start_addr = valu; |
c906108c SS |
2844 | } |
2845 | /* Make a block for the local symbols within. */ | |
63e43d3a | 2846 | finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 2847 | newobj->start_addr, valu); |
c906108c SS |
2848 | } |
2849 | } | |
2850 | else | |
2851 | { | |
2852 | /* This is the outermost LBRAC...RBRAC pair. There is no | |
2853 | need to do anything; leave the symbols that preceded it | |
2854 | to be attached to the function's own block. We need to | |
2855 | indicate that we just moved outside of the function. */ | |
2856 | within_function = 0; | |
2857 | } | |
2858 | ||
c906108c SS |
2859 | break; |
2860 | ||
2861 | case N_FN: | |
2862 | case N_FN_SEQ: | |
e31272c3 MK |
2863 | /* This kind of symbol indicates the start of an object file. |
2864 | Relocate for dynamic loading. */ | |
b8fbeb18 | 2865 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2866 | break; |
2867 | ||
2868 | case N_SO: | |
e31272c3 MK |
2869 | /* This type of symbol indicates the start of data for one |
2870 | source file. Finish the symbol table of the previous source | |
2871 | file (if any) and start accumulating a new symbol table. | |
2872 | Relocate for dynamic loading. */ | |
b8fbeb18 | 2873 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2874 | |
2875 | n_opt_found = 0; | |
2876 | ||
46212e0b | 2877 | if (get_last_source_file ()) |
c906108c SS |
2878 | { |
2879 | /* Check if previous symbol was also an N_SO (with some | |
e31272c3 MK |
2880 | sanity checks). If so, that one was actually the |
2881 | directory name, and the current one is the real file | |
0963b4bd | 2882 | name. Patch things up. */ |
c906108c SS |
2883 | if (previous_stab_code == (unsigned char) N_SO) |
2884 | { | |
2885 | patch_subfile_names (current_subfile, name); | |
0963b4bd | 2886 | break; /* Ignore repeated SOs. */ |
c906108c | 2887 | } |
4d663531 | 2888 | end_symtab (valu, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2889 | end_stabs (); |
2890 | } | |
2891 | ||
e31272c3 MK |
2892 | /* Null name means this just marks the end of text for this .o |
2893 | file. Don't start a new symtab in this case. */ | |
c906108c SS |
2894 | if (*name == '\000') |
2895 | break; | |
2896 | ||
2897 | if (block_address_function_relative) | |
c5aa993b | 2898 | function_start_offset = 0; |
c906108c SS |
2899 | |
2900 | start_stabs (); | |
4d663531 | 2901 | start_symtab (objfile, name, NULL, valu); |
c906108c SS |
2902 | record_debugformat ("stabs"); |
2903 | break; | |
2904 | ||
2905 | case N_SOL: | |
e31272c3 MK |
2906 | /* This type of symbol indicates the start of data for a |
2907 | sub-source-file, one whose contents were copied or included | |
2908 | in the compilation of the main source file (whose name was | |
2909 | given in the N_SO symbol). Relocate for dynamic loading. */ | |
b8fbeb18 | 2910 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
4d663531 | 2911 | start_subfile (name); |
c906108c SS |
2912 | break; |
2913 | ||
2914 | case N_BINCL: | |
2915 | push_subfile (); | |
2916 | add_new_header_file (name, valu); | |
4d663531 | 2917 | start_subfile (name); |
c906108c SS |
2918 | break; |
2919 | ||
2920 | case N_EINCL: | |
4d663531 | 2921 | start_subfile (pop_subfile ()); |
c906108c SS |
2922 | break; |
2923 | ||
2924 | case N_EXCL: | |
2925 | add_old_header_file (name, valu); | |
2926 | break; | |
2927 | ||
2928 | case N_SLINE: | |
e31272c3 MK |
2929 | /* This type of "symbol" really just records one line-number -- |
2930 | core-address correspondence. Enter it in the line list for | |
2931 | this symbol table. */ | |
c906108c | 2932 | |
e31272c3 MK |
2933 | /* Relocate for dynamic loading and for ELF acc |
2934 | function-relative symbols. */ | |
c906108c SS |
2935 | valu += function_start_offset; |
2936 | ||
ceddaf06 MK |
2937 | /* GCC 2.95.3 emits the first N_SLINE stab somwehere in the |
2938 | middle of the prologue instead of right at the start of the | |
2939 | function. To deal with this we record the address for the | |
2940 | first N_SLINE stab to be the start of the function instead of | |
2941 | the listed location. We really shouldn't to this. When | |
2942 | compiling with optimization, this first N_SLINE stab might be | |
2943 | optimized away. Other (non-GCC) compilers don't emit this | |
2944 | stab at all. There is no real harm in having an extra | |
2945 | numbered line, although it can be a bit annoying for the | |
2946 | user. However, it totally screws up our testsuite. | |
2947 | ||
2948 | So for now, keep adjusting the address of the first N_SLINE | |
2949 | stab, but only for code compiled with GCC. */ | |
2950 | ||
a1b9830c DJ |
2951 | if (within_function && sline_found_in_function == 0) |
2952 | { | |
fbf65064 UW |
2953 | CORE_ADDR addr = processing_gcc_compilation == 2 ? |
2954 | last_function_start : valu; | |
9a619af0 | 2955 | |
fbf65064 UW |
2956 | record_line (current_subfile, desc, |
2957 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
a1b9830c DJ |
2958 | sline_found_in_function = 1; |
2959 | } | |
2960 | else | |
fbf65064 UW |
2961 | record_line (current_subfile, desc, |
2962 | gdbarch_addr_bits_remove (gdbarch, valu)); | |
c906108c SS |
2963 | break; |
2964 | ||
2965 | case N_BCOMM: | |
2966 | common_block_start (name, objfile); | |
2967 | break; | |
2968 | ||
2969 | case N_ECOMM: | |
2970 | common_block_end (objfile); | |
2971 | break; | |
2972 | ||
e31272c3 MK |
2973 | /* The following symbol types need to have the appropriate |
2974 | offset added to their value; then we process symbol | |
2975 | definitions in the name. */ | |
c906108c | 2976 | |
e31272c3 MK |
2977 | case N_STSYM: /* Static symbol in data segment. */ |
2978 | case N_LCSYM: /* Static symbol in BSS segment. */ | |
2979 | case N_ROSYM: /* Static symbol in read-only data segment. */ | |
c5aa993b | 2980 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
e31272c3 MK |
2981 | Solaris 2's stabs-in-elf makes *most* symbols relative but |
2982 | leaves a few absolute (at least for Solaris 2.1 and version | |
2983 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on | |
2984 | the fence. .stab "foo:S...",N_STSYM is absolute (ld | |
2985 | relocates it) .stab "foo:V...",N_STSYM is relative (section | |
2986 | base subtracted). This leaves us no choice but to search for | |
2987 | the 'S' or 'V'... (or pass the whole section_offsets stuff | |
2988 | down ONE MORE function call level, which we really don't want | |
2989 | to do). */ | |
c906108c SS |
2990 | { |
2991 | char *p; | |
2992 | ||
e31272c3 MK |
2993 | /* Normal object file and NLMs have non-zero text seg offsets, |
2994 | but don't need their static syms offset in this fashion. | |
2995 | XXX - This is really a crock that should be fixed in the | |
2996 | solib handling code so that I don't have to work around it | |
2997 | here. */ | |
c906108c SS |
2998 | |
2999 | if (!symfile_relocatable) | |
3000 | { | |
3001 | p = strchr (name, ':'); | |
3002 | if (p != 0 && p[1] == 'S') | |
3003 | { | |
18a94d75 DE |
3004 | /* The linker relocated it. We don't want to add a |
3005 | Sun-stabs Tfoo.foo-like offset, but we *do* | |
e31272c3 MK |
3006 | want to add whatever solib.c passed to |
3007 | symbol_file_add as addr (this is known to affect | |
18a94d75 DE |
3008 | SunOS 4, and I suspect ELF too). Since there is no |
3009 | Ttext.text symbol, we can get addr from the text offset. */ | |
b8fbeb18 | 3010 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3011 | goto define_a_symbol; |
3012 | } | |
3013 | } | |
e31272c3 MK |
3014 | /* Since it's not the kludge case, re-dispatch to the right |
3015 | handler. */ | |
c5aa993b JM |
3016 | switch (type) |
3017 | { | |
3018 | case N_STSYM: | |
3019 | goto case_N_STSYM; | |
3020 | case N_LCSYM: | |
3021 | goto case_N_LCSYM; | |
3022 | case N_ROSYM: | |
3023 | goto case_N_ROSYM; | |
3024 | default: | |
e31272c3 | 3025 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3026 | _("failed internal consistency check")); |
c5aa993b | 3027 | } |
c906108c SS |
3028 | } |
3029 | ||
e31272c3 MK |
3030 | case_N_STSYM: /* Static symbol in data segment. */ |
3031 | case N_DSLINE: /* Source line number, data segment. */ | |
b8fbeb18 | 3032 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
3033 | goto define_a_symbol; |
3034 | ||
e31272c3 MK |
3035 | case_N_LCSYM: /* Static symbol in BSS segment. */ |
3036 | case N_BSLINE: /* Source line number, BSS segment. */ | |
3037 | /* N_BROWS: overlaps with N_BSLINE. */ | |
b8fbeb18 | 3038 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
3039 | goto define_a_symbol; |
3040 | ||
e31272c3 | 3041 | case_N_ROSYM: /* Static symbol in read-only data segment. */ |
b8fbeb18 | 3042 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA (objfile)); |
c906108c SS |
3043 | goto define_a_symbol; |
3044 | ||
e31272c3 MK |
3045 | case N_ENTRY: /* Alternate entry point. */ |
3046 | /* Relocate for dynamic loading. */ | |
b8fbeb18 | 3047 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3048 | goto define_a_symbol; |
3049 | ||
e31272c3 MK |
3050 | /* The following symbol types we don't know how to process. |
3051 | Handle them in a "default" way, but complain to people who | |
3052 | care. */ | |
c906108c | 3053 | default: |
e31272c3 MK |
3054 | case N_CATCH: /* Exception handler catcher. */ |
3055 | case N_EHDECL: /* Exception handler name. */ | |
3056 | case N_PC: /* Global symbol in Pascal. */ | |
3057 | case N_M2C: /* Modula-2 compilation unit. */ | |
3058 | /* N_MOD2: overlaps with N_EHDECL. */ | |
3059 | case N_SCOPE: /* Modula-2 scope information. */ | |
3060 | case N_ECOML: /* End common (local name). */ | |
3061 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
c906108c SS |
3062 | case N_NBDATA: |
3063 | case N_NBBSS: | |
3064 | case N_NBSTS: | |
3065 | case N_NBLCS: | |
bb599908 | 3066 | unknown_symtype_complaint (hex_string (type)); |
c906108c SS |
3067 | /* FALLTHROUGH */ |
3068 | ||
e31272c3 MK |
3069 | /* The following symbol types don't need the address field |
3070 | relocated, since it is either unused, or is absolute. */ | |
c906108c | 3071 | define_a_symbol: |
e31272c3 MK |
3072 | case N_GSYM: /* Global variable. */ |
3073 | case N_NSYMS: /* Number of symbols (Ultrix). */ | |
3074 | case N_NOMAP: /* No map? (Ultrix). */ | |
3075 | case N_RSYM: /* Register variable. */ | |
3076 | case N_DEFD: /* Modula-2 GNU module dependency. */ | |
3077 | case N_SSYM: /* Struct or union element. */ | |
3078 | case N_LSYM: /* Local symbol in stack. */ | |
3079 | case N_PSYM: /* Parameter variable. */ | |
3080 | case N_LENG: /* Length of preceding symbol type. */ | |
c906108c SS |
3081 | if (name) |
3082 | { | |
3083 | int deftype; | |
3084 | char *colon_pos = strchr (name, ':'); | |
9a619af0 | 3085 | |
c906108c SS |
3086 | if (colon_pos == NULL) |
3087 | deftype = '\0'; | |
3088 | else | |
3089 | deftype = colon_pos[1]; | |
3090 | ||
3091 | switch (deftype) | |
3092 | { | |
3093 | case 'f': | |
3094 | case 'F': | |
e31272c3 MK |
3095 | /* Deal with the SunPRO 3.0 compiler which omits the |
3096 | address from N_FUN symbols. */ | |
c906108c | 3097 | if (type == N_FUN |
e31272c3 | 3098 | && valu == ANOFFSET (section_offsets, |
203c3895 | 3099 | SECT_OFF_TEXT (objfile)) |
5e2b427d | 3100 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9a058a09 KB |
3101 | { |
3102 | CORE_ADDR minsym_valu = | |
46212e0b TT |
3103 | find_stab_function_addr (name, get_last_source_file (), |
3104 | objfile); | |
9a058a09 | 3105 | |
e31272c3 MK |
3106 | /* The function find_stab_function_addr will return |
3107 | 0 if the minimal symbol wasn't found. | |
3108 | (Unfortunately, this might also be a valid | |
3109 | address.) Anyway, if it *does* return 0, it is | |
3110 | likely that the value was set correctly to begin | |
3111 | with... */ | |
9a058a09 KB |
3112 | if (minsym_valu != 0) |
3113 | valu = minsym_valu; | |
3114 | } | |
c906108c | 3115 | |
c906108c | 3116 | if (block_address_function_relative) |
e31272c3 | 3117 | /* For Solaris 2 compilers, the block addresses and |
c906108c | 3118 | N_SLINE's are relative to the start of the |
e31272c3 MK |
3119 | function. On normal systems, and when using GCC on |
3120 | Solaris 2, these addresses are just absolute, or | |
c906108c SS |
3121 | relative to the N_SO, depending on |
3122 | BLOCK_ADDRESS_ABSOLUTE. */ | |
c5aa993b | 3123 | function_start_offset = valu; |
c906108c SS |
3124 | |
3125 | within_function = 1; | |
c3f6f71d JM |
3126 | |
3127 | if (context_stack_depth > 1) | |
3128 | { | |
23136709 | 3129 | complaint (&symfile_complaints, |
063e58ba MD |
3130 | _("unmatched N_LBRAC before symtab pos %d"), |
3131 | symnum); | |
c3f6f71d JM |
3132 | break; |
3133 | } | |
3134 | ||
c906108c SS |
3135 | if (context_stack_depth > 0) |
3136 | { | |
df8a16a1 DJ |
3137 | struct block *block; |
3138 | ||
fe978cb0 | 3139 | newobj = pop_context (); |
c906108c | 3140 | /* Make a block for the local symbols within. */ |
fe978cb0 | 3141 | block = finish_block (newobj->name, &local_symbols, |
63e43d3a PMR |
3142 | newobj->old_blocks, NULL, |
3143 | newobj->start_addr, valu); | |
df8a16a1 DJ |
3144 | |
3145 | /* For C++, set the block's scope. */ | |
fe978cb0 PA |
3146 | if (SYMBOL_LANGUAGE (newobj->name) == language_cplus) |
3147 | cp_set_block_scope (newobj->name, block, | |
195a3f6c | 3148 | &objfile->objfile_obstack); |
c906108c | 3149 | } |
c906108c | 3150 | |
fe978cb0 PA |
3151 | newobj = push_context (0, valu); |
3152 | newobj->name = define_symbol (valu, name, desc, type, objfile); | |
c906108c SS |
3153 | break; |
3154 | ||
3155 | default: | |
3156 | define_symbol (valu, name, desc, type, objfile); | |
3157 | break; | |
3158 | } | |
3159 | } | |
3160 | break; | |
3161 | ||
c5aa993b JM |
3162 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
3163 | for a bunch of other flags, too. Someday we may parse their | |
3164 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
e31272c3 | 3165 | case N_OPT: /* Solaris 2: Compiler options. */ |
c906108c SS |
3166 | if (name) |
3167 | { | |
6314a349 | 3168 | if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
3169 | { |
3170 | processing_gcc_compilation = 2; | |
c906108c SS |
3171 | } |
3172 | else | |
3173 | n_opt_found = 1; | |
3174 | } | |
3175 | break; | |
3176 | ||
51cc5b07 AC |
3177 | case N_MAIN: /* Name of main routine. */ |
3178 | /* FIXME: If one has a symbol file with N_MAIN and then replaces | |
3179 | it with a symbol file with "main" and without N_MAIN. I'm | |
3180 | not sure exactly what rule to follow but probably something | |
3181 | like: N_MAIN takes precedence over "main" no matter what | |
3182 | objfile it is in; If there is more than one N_MAIN, choose | |
3183 | the one in the symfile_objfile; If there is more than one | |
3184 | N_MAIN within a given objfile, complain() and choose | |
0963b4bd | 3185 | arbitrarily. (kingdon) */ |
51cc5b07 | 3186 | if (name != NULL) |
3d548a53 | 3187 | set_objfile_main_name (objfile, name, language_unknown); |
51cc5b07 AC |
3188 | break; |
3189 | ||
c5aa993b | 3190 | /* The following symbol types can be ignored. */ |
e31272c3 MK |
3191 | case N_OBJ: /* Solaris 2: Object file dir and name. */ |
3192 | case N_PATCH: /* Solaris 2: Patch Run Time Checker. */ | |
3193 | /* N_UNDF: Solaris 2: File separator mark. */ | |
3194 | /* N_UNDF: -- we will never encounter it, since we only process | |
3195 | one file's symbols at once. */ | |
3196 | case N_ENDM: /* Solaris 2: End of module. */ | |
c906108c SS |
3197 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
3198 | break; | |
3199 | } | |
3200 | ||
3201 | /* '#' is a GNU C extension to allow one symbol to refer to another | |
3202 | related symbol. | |
3203 | ||
3204 | Generally this is used so that an alias can refer to its main | |
c5aa993b | 3205 | symbol. */ |
13f6513c | 3206 | gdb_assert (name); |
c906108c SS |
3207 | if (name[0] == '#') |
3208 | { | |
e31272c3 MK |
3209 | /* Initialize symbol reference names and determine if this is a |
3210 | definition. If a symbol reference is being defined, go ahead | |
3211 | and add it. Otherwise, just return. */ | |
c906108c SS |
3212 | |
3213 | char *s = name; | |
3214 | int refnum; | |
3215 | ||
3216 | /* If this stab defines a new reference ID that is not on the | |
c5aa993b | 3217 | reference list, then put it on the reference list. |
c906108c | 3218 | |
c5aa993b JM |
3219 | We go ahead and advance NAME past the reference, even though |
3220 | it is not strictly necessary at this time. */ | |
c906108c SS |
3221 | refnum = symbol_reference_defined (&s); |
3222 | if (refnum >= 0) | |
3223 | if (!ref_search (refnum)) | |
3224 | ref_add (refnum, 0, name, valu); | |
3225 | name = s; | |
3226 | } | |
3227 | ||
c906108c SS |
3228 | previous_stab_code = type; |
3229 | } | |
3230 | \f | |
3231 | /* FIXME: The only difference between this and elfstab_build_psymtabs | |
3232 | is the call to install_minimal_symbols for elf, and the support for | |
3233 | split sections. If the differences are really that small, the code | |
3234 | should be shared. */ | |
3235 | ||
3236 | /* Scan and build partial symbols for an coff symbol file. | |
3237 | The coff file has already been processed to get its minimal symbols. | |
3238 | ||
3239 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3240 | rolled into one. | |
3241 | ||
3242 | OBJFILE is the object file we are reading symbols from. | |
3243 | ADDR is the address relative to which the symbols are (e.g. | |
3244 | the base address of the text segment). | |
c906108c SS |
3245 | TEXTADDR is the address of the text section. |
3246 | TEXTSIZE is the size of the text section. | |
3247 | STABSECTS is the list of .stab sections in OBJFILE. | |
3248 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
3249 | .stabstr section exists. | |
3250 | ||
3251 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 3252 | adjusted for coff details. */ |
c906108c SS |
3253 | |
3254 | void | |
c67a9c90 | 3255 | coffstab_build_psymtabs (struct objfile *objfile, |
fba45db2 KB |
3256 | CORE_ADDR textaddr, unsigned int textsize, |
3257 | struct stab_section_list *stabsects, | |
3258 | file_ptr stabstroffset, unsigned int stabstrsize) | |
c906108c SS |
3259 | { |
3260 | int val; | |
3261 | bfd *sym_bfd = objfile->obfd; | |
3262 | char *name = bfd_get_filename (sym_bfd); | |
c906108c SS |
3263 | unsigned int stabsize; |
3264 | ||
c906108c SS |
3265 | DBX_TEXT_ADDR (objfile) = textaddr; |
3266 | DBX_TEXT_SIZE (objfile) = textsize; | |
3267 | ||
3268 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3269 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; |
c906108c | 3270 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
c5aa993b | 3271 | |
c906108c | 3272 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3273 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3274 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3275 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3276 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3277 | |
3278 | /* Now read in the string table in one big gulp. */ | |
3279 | ||
3280 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3281 | if (val < 0) | |
3282 | perror_with_name (name); | |
3a42e9d0 | 3283 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3284 | if (val != stabstrsize) |
3285 | perror_with_name (name); | |
3286 | ||
3287 | stabsread_new_init (); | |
3288 | buildsym_new_init (); | |
3289 | free_header_files (); | |
3290 | init_header_files (); | |
3291 | ||
3292 | processing_acc_compilation = 1; | |
3293 | ||
3294 | /* In a coff file, we've already installed the minimal symbols that came | |
3295 | from the coff (non-stab) symbol table, so always act like an | |
0963b4bd | 3296 | incremental load here. */ |
c906108c SS |
3297 | if (stabsects->next == NULL) |
3298 | { | |
3299 | stabsize = bfd_section_size (sym_bfd, stabsects->section); | |
3300 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
3301 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3302 | } | |
3303 | else | |
3304 | { | |
3305 | struct stab_section_list *stabsect; | |
3306 | ||
3307 | DBX_SYMCOUNT (objfile) = 0; | |
3308 | for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next) | |
3309 | { | |
3310 | stabsize = bfd_section_size (sym_bfd, stabsect->section); | |
3311 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); | |
3312 | } | |
3313 | ||
3314 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3315 | ||
3316 | symbuf_sections = stabsects->next; | |
3317 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section); | |
3318 | symbuf_read = 0; | |
3319 | } | |
3320 | ||
96baa820 | 3321 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3322 | } |
3323 | \f | |
3324 | /* Scan and build partial symbols for an ELF symbol file. | |
fea25152 | 3325 | This ELF file has already been processed to get its minimal symbols. |
c906108c SS |
3326 | |
3327 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3328 | rolled into one. | |
3329 | ||
3330 | OBJFILE is the object file we are reading symbols from. | |
3331 | ADDR is the address relative to which the symbols are (e.g. | |
3332 | the base address of the text segment). | |
086df311 | 3333 | STABSECT is the BFD section information for the .stab section. |
c906108c SS |
3334 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
3335 | .stabstr section exists. | |
3336 | ||
3337 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 3338 | adjusted for elf details. */ |
c906108c SS |
3339 | |
3340 | void | |
c67a9c90 | 3341 | elfstab_build_psymtabs (struct objfile *objfile, asection *stabsect, |
fba45db2 | 3342 | file_ptr stabstroffset, unsigned int stabstrsize) |
c906108c SS |
3343 | { |
3344 | int val; | |
3345 | bfd *sym_bfd = objfile->obfd; | |
3346 | char *name = bfd_get_filename (sym_bfd); | |
5fe41fbf | 3347 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
c906108c | 3348 | |
7a292a7a SS |
3349 | /* Find the first and last text address. dbx_symfile_read seems to |
3350 | want this. */ | |
3351 | find_text_range (sym_bfd, objfile); | |
c906108c SS |
3352 | |
3353 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3354 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; |
086df311 DJ |
3355 | DBX_SYMCOUNT (objfile) |
3356 | = bfd_section_size (objfile->obfd, stabsect) / DBX_SYMBOL_SIZE (objfile); | |
c906108c | 3357 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
086df311 DJ |
3358 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; |
3359 | DBX_STAB_SECTION (objfile) = stabsect; | |
c5aa993b | 3360 | |
c906108c | 3361 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3362 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3363 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3364 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3365 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3366 | |
3367 | /* Now read in the string table in one big gulp. */ | |
3368 | ||
3369 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3370 | if (val < 0) | |
3371 | perror_with_name (name); | |
3a42e9d0 | 3372 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3373 | if (val != stabstrsize) |
3374 | perror_with_name (name); | |
3375 | ||
3376 | stabsread_new_init (); | |
3377 | buildsym_new_init (); | |
3378 | free_header_files (); | |
3379 | init_header_files (); | |
c906108c SS |
3380 | |
3381 | processing_acc_compilation = 1; | |
3382 | ||
086df311 DJ |
3383 | symbuf_read = 0; |
3384 | symbuf_left = bfd_section_size (objfile->obfd, stabsect); | |
ac8035ab | 3385 | stabs_data = symfile_relocate_debug_section (objfile, stabsect, NULL); |
086df311 | 3386 | if (stabs_data) |
5fe41fbf | 3387 | make_cleanup (free_current_contents, (void *) &stabs_data); |
086df311 | 3388 | |
c906108c SS |
3389 | /* In an elf file, we've already installed the minimal symbols that came |
3390 | from the elf (non-stab) symbol table, so always act like an | |
7134143f DJ |
3391 | incremental load here. dbx_symfile_read should not generate any new |
3392 | minimal symbols, since we will have already read the ELF dynamic symbol | |
3393 | table and normal symbol entries won't be in the ".stab" section; but in | |
3394 | case it does, it will install them itself. */ | |
96baa820 | 3395 | dbx_symfile_read (objfile, 0); |
086df311 | 3396 | |
5fe41fbf | 3397 | do_cleanups (back_to); |
c906108c SS |
3398 | } |
3399 | \f | |
3400 | /* Scan and build partial symbols for a file with special sections for stabs | |
3401 | and stabstrings. The file has already been processed to get its minimal | |
3402 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
3403 | ||
3404 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3405 | rolled into one. | |
3406 | ||
3407 | OBJFILE is the object file we are reading symbols from. | |
3408 | ADDR is the address relative to which the symbols are (e.g. the base address | |
c5aa993b | 3409 | of the text segment). |
c906108c SS |
3410 | STAB_NAME is the name of the section that contains the stabs. |
3411 | STABSTR_NAME is the name of the section that contains the stab strings. | |
3412 | ||
0963b4bd MS |
3413 | This routine is mostly copied from dbx_symfile_init and |
3414 | dbx_symfile_read. */ | |
c906108c SS |
3415 | |
3416 | void | |
c67a9c90 | 3417 | stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, |
fba45db2 | 3418 | char *stabstr_name, char *text_name) |
c906108c SS |
3419 | { |
3420 | int val; | |
3421 | bfd *sym_bfd = objfile->obfd; | |
3422 | char *name = bfd_get_filename (sym_bfd); | |
3423 | asection *stabsect; | |
3424 | asection *stabstrsect; | |
3425 | asection *text_sect; | |
d2f4b8fe | 3426 | struct dbx_symfile_info *dbx; |
c906108c SS |
3427 | |
3428 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
3429 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
3430 | ||
3431 | if (!stabsect) | |
3432 | return; | |
3433 | ||
3434 | if (!stabstrsect) | |
0963b4bd MS |
3435 | error (_("stabsect_build_psymtabs: Found stabs (%s), " |
3436 | "but not string section (%s)"), | |
c906108c SS |
3437 | stab_name, stabstr_name); |
3438 | ||
d2f4b8fe TT |
3439 | dbx = XCNEW (struct dbx_symfile_info); |
3440 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c SS |
3441 | |
3442 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); | |
3443 | if (!text_sect) | |
8a3fe4f8 | 3444 | error (_("Can't find %s section in symbol file"), text_name); |
c906108c SS |
3445 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
3446 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
3447 | ||
c5aa993b JM |
3448 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); |
3449 | DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect) | |
c906108c SS |
3450 | / DBX_SYMBOL_SIZE (objfile); |
3451 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect); | |
3e43a32a MS |
3452 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING |
3453 | INSIDE BFD DATA | |
3454 | STRUCTURES */ | |
c5aa993b | 3455 | |
c906108c | 3456 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) |
063e58ba MD |
3457 | error (_("ridiculous string table size: %d bytes"), |
3458 | DBX_STRINGTAB_SIZE (objfile)); | |
c906108c | 3459 | DBX_STRINGTAB (objfile) = (char *) |
3e43a32a MS |
3460 | obstack_alloc (&objfile->objfile_obstack, |
3461 | DBX_STRINGTAB_SIZE (objfile) + 1); | |
c906108c SS |
3462 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); |
3463 | ||
3464 | /* Now read in the string table in one big gulp. */ | |
3465 | ||
c5aa993b JM |
3466 | val = bfd_get_section_contents (sym_bfd, /* bfd */ |
3467 | stabstrsect, /* bfd section */ | |
063e58ba | 3468 | DBX_STRINGTAB (objfile), /* input buffer */ |
3e43a32a MS |
3469 | 0, /* offset into section */ |
3470 | DBX_STRINGTAB_SIZE (objfile)); /* amount to | |
3471 | read */ | |
c906108c SS |
3472 | |
3473 | if (!val) | |
3474 | perror_with_name (name); | |
3475 | ||
3476 | stabsread_new_init (); | |
3477 | buildsym_new_init (); | |
3478 | free_header_files (); | |
3479 | init_header_files (); | |
c906108c | 3480 | |
0963b4bd | 3481 | /* Now, do an incremental load. */ |
c906108c SS |
3482 | |
3483 | processing_acc_compilation = 1; | |
96baa820 | 3484 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3485 | } |
3486 | \f | |
00b5771c | 3487 | static const struct sym_fns aout_sym_fns = |
c906108c | 3488 | { |
0963b4bd MS |
3489 | dbx_new_init, /* init anything gbl to entire symtab */ |
3490 | dbx_symfile_init, /* read initial info, setup for sym_read() */ | |
3491 | dbx_symfile_read, /* read a symbol file into symtab */ | |
b11896a5 | 3492 | NULL, /* sym_read_psymbols */ |
0963b4bd MS |
3493 | dbx_symfile_finish, /* finished with file, cleanup */ |
3494 | default_symfile_offsets, /* parse user's offsets to internal form */ | |
3495 | default_symfile_segments, /* Get segment information from a file. */ | |
3496 | NULL, | |
3497 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3498 | NULL, /* sym_probe_fns */ |
00b5771c | 3499 | &psym_functions |
c906108c SS |
3500 | }; |
3501 | ||
3502 | void | |
fba45db2 | 3503 | _initialize_dbxread (void) |
c906108c | 3504 | { |
c256e171 | 3505 | add_symtab_fns (bfd_target_aout_flavour, &aout_sym_fns); |
d2f4b8fe TT |
3506 | |
3507 | dbx_objfile_data_key | |
3508 | = register_objfile_data_with_cleanup (NULL, dbx_free_symfile_info); | |
c906108c | 3509 | } |