Commit | Line | Data |
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c906108c | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
61baf725 | 2 | Copyright (C) 1986-2017 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 | ||
c906108c SS |
147 | \f |
148 | /* The lowest text address we have yet encountered. This is needed | |
149 | because in an a.out file, there is no header field which tells us | |
150 | what address the program is actually going to be loaded at, so we | |
151 | need to make guesses based on the symbols (which *are* relocated to | |
152 | reflect the address it will be loaded at). */ | |
153 | ||
154 | static CORE_ADDR lowest_text_address; | |
155 | ||
156 | /* Non-zero if there is any line number info in the objfile. Prevents | |
8763cede | 157 | dbx_end_psymtab from discarding an otherwise empty psymtab. */ |
c906108c SS |
158 | |
159 | static int has_line_numbers; | |
160 | ||
161 | /* Complaints about the symbols we have encountered. */ | |
162 | ||
23136709 KB |
163 | static void |
164 | unknown_symtype_complaint (const char *arg1) | |
165 | { | |
e2e0b3e5 | 166 | complaint (&symfile_complaints, _("unknown symbol type %s"), arg1); |
23136709 | 167 | } |
c906108c | 168 | |
23136709 KB |
169 | static void |
170 | lbrac_mismatch_complaint (int arg1) | |
171 | { | |
172 | complaint (&symfile_complaints, | |
e2e0b3e5 | 173 | _("N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d"), arg1); |
23136709 | 174 | } |
c906108c | 175 | |
23136709 KB |
176 | static void |
177 | repeated_header_complaint (const char *arg1, int arg2) | |
178 | { | |
179 | complaint (&symfile_complaints, | |
3e43a32a MS |
180 | _("\"repeated\" header file %s not " |
181 | "previously seen, at symtab pos %d"), | |
23136709 KB |
182 | arg1, arg2); |
183 | } | |
1f077a3e | 184 | |
7a292a7a SS |
185 | /* find_text_range --- find start and end of loadable code sections |
186 | ||
187 | The find_text_range function finds the shortest address range that | |
188 | encloses all sections containing executable code, and stores it in | |
189 | objfile's text_addr and text_size members. | |
190 | ||
191 | dbx_symfile_read will use this to finish off the partial symbol | |
192 | table, in some cases. */ | |
193 | ||
194 | static void | |
c5aa993b | 195 | find_text_range (bfd * sym_bfd, struct objfile *objfile) |
7a292a7a SS |
196 | { |
197 | asection *sec; | |
198 | int found_any = 0; | |
b9179dbc EZ |
199 | CORE_ADDR start = 0; |
200 | CORE_ADDR end = 0; | |
c5aa993b | 201 | |
7a292a7a SS |
202 | for (sec = sym_bfd->sections; sec; sec = sec->next) |
203 | if (bfd_get_section_flags (sym_bfd, sec) & SEC_CODE) | |
204 | { | |
205 | CORE_ADDR sec_start = bfd_section_vma (sym_bfd, sec); | |
206 | CORE_ADDR sec_end = sec_start + bfd_section_size (sym_bfd, sec); | |
207 | ||
208 | if (found_any) | |
209 | { | |
c5aa993b JM |
210 | if (sec_start < start) |
211 | start = sec_start; | |
212 | if (sec_end > end) | |
213 | end = sec_end; | |
7a292a7a SS |
214 | } |
215 | else | |
216 | { | |
217 | start = sec_start; | |
218 | end = sec_end; | |
219 | } | |
220 | ||
221 | found_any = 1; | |
222 | } | |
223 | ||
c5aa993b | 224 | if (!found_any) |
8a3fe4f8 | 225 | error (_("Can't find any code sections in symbol file")); |
7a292a7a SS |
226 | |
227 | DBX_TEXT_ADDR (objfile) = start; | |
228 | DBX_TEXT_SIZE (objfile) = end - start; | |
229 | } | |
c5aa993b | 230 | \f |
7a292a7a SS |
231 | |
232 | ||
c906108c SS |
233 | /* During initial symbol readin, we need to have a structure to keep |
234 | track of which psymtabs have which bincls in them. This structure | |
235 | is used during readin to setup the list of dependencies within each | |
0963b4bd | 236 | partial symbol table. */ |
c906108c SS |
237 | |
238 | struct header_file_location | |
239 | { | |
240 | char *name; /* Name of header file */ | |
241 | int instance; /* See above */ | |
242 | struct partial_symtab *pst; /* Partial symtab that has the | |
0963b4bd | 243 | BINCL/EINCL defs for this file. */ |
c906108c SS |
244 | }; |
245 | ||
0963b4bd | 246 | /* The actual list and controling variables. */ |
c906108c SS |
247 | static struct header_file_location *bincl_list, *next_bincl; |
248 | static int bincls_allocated; | |
249 | ||
0963b4bd | 250 | /* Local function prototypes. */ |
c906108c | 251 | |
a14ed312 | 252 | extern void _initialize_dbxread (void); |
392a587b | 253 | |
5c80ed9d | 254 | static void read_ofile_symtab (struct objfile *, struct partial_symtab *); |
c906108c | 255 | |
257e7a09 YQ |
256 | static void dbx_read_symtab (struct partial_symtab *self, |
257 | struct objfile *objfile); | |
c906108c | 258 | |
5c80ed9d | 259 | static void dbx_psymtab_to_symtab_1 (struct objfile *, struct partial_symtab *); |
c906108c | 260 | |
8dddcb8f | 261 | static void read_dbx_symtab (minimal_symbol_reader &, struct objfile *); |
c906108c | 262 | |
a14ed312 | 263 | static void free_bincl_list (struct objfile *); |
c906108c | 264 | |
a14ed312 | 265 | static struct partial_symtab *find_corresponding_bincl_psymtab (char *, int); |
c906108c | 266 | |
a14ed312 | 267 | static void add_bincl_to_list (struct partial_symtab *, char *, int); |
c906108c | 268 | |
a14ed312 | 269 | static void init_bincl_list (int, struct objfile *); |
c906108c | 270 | |
a14ed312 | 271 | static char *dbx_next_symbol_text (struct objfile *); |
c906108c | 272 | |
a14ed312 | 273 | static void fill_symbuf (bfd *); |
c906108c | 274 | |
a14ed312 | 275 | static void dbx_symfile_init (struct objfile *); |
c906108c | 276 | |
a14ed312 | 277 | static void dbx_new_init (struct objfile *); |
c906108c | 278 | |
b15cc25c | 279 | static void dbx_symfile_read (struct objfile *, symfile_add_flags); |
c906108c | 280 | |
a14ed312 | 281 | static void dbx_symfile_finish (struct objfile *); |
c906108c | 282 | |
8dddcb8f TT |
283 | static void record_minimal_symbol (minimal_symbol_reader &, |
284 | const char *, CORE_ADDR, int, | |
bec71544 | 285 | struct objfile *); |
c906108c | 286 | |
a14ed312 | 287 | static void add_new_header_file (char *, int); |
c906108c | 288 | |
a14ed312 | 289 | static void add_old_header_file (char *, int); |
c906108c | 290 | |
a14ed312 | 291 | static void add_this_object_header_file (int); |
c906108c | 292 | |
a14ed312 KB |
293 | static struct partial_symtab *start_psymtab (struct objfile *, char *, |
294 | CORE_ADDR, int, | |
295 | struct partial_symbol **, | |
296 | struct partial_symbol **); | |
d4f3574e | 297 | |
0963b4bd | 298 | /* Free up old header file tables. */ |
c906108c | 299 | |
d3d55eeb | 300 | void |
fba45db2 | 301 | free_header_files (void) |
c906108c SS |
302 | { |
303 | if (this_object_header_files) | |
304 | { | |
b8c9b27d | 305 | xfree (this_object_header_files); |
c906108c SS |
306 | this_object_header_files = NULL; |
307 | } | |
308 | n_allocated_this_object_header_files = 0; | |
309 | } | |
310 | ||
0963b4bd | 311 | /* Allocate new header file tables. */ |
c906108c | 312 | |
d3d55eeb | 313 | void |
fba45db2 | 314 | init_header_files (void) |
c906108c SS |
315 | { |
316 | n_allocated_this_object_header_files = 10; | |
8d749320 | 317 | this_object_header_files = XNEWVEC (int, 10); |
c906108c SS |
318 | } |
319 | ||
320 | /* Add header file number I for this object file | |
321 | at the next successive FILENUM. */ | |
322 | ||
323 | static void | |
fba45db2 | 324 | add_this_object_header_file (int i) |
c906108c SS |
325 | { |
326 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
327 | { | |
328 | n_allocated_this_object_header_files *= 2; | |
329 | this_object_header_files | |
330 | = (int *) xrealloc ((char *) this_object_header_files, | |
c5aa993b | 331 | n_allocated_this_object_header_files * sizeof (int)); |
c906108c SS |
332 | } |
333 | ||
334 | this_object_header_files[n_this_object_header_files++] = i; | |
335 | } | |
336 | ||
337 | /* Add to this file an "old" header file, one already seen in | |
338 | a previous object file. NAME is the header file's name. | |
339 | INSTANCE is its instance code, to select among multiple | |
340 | symbol tables for the same header file. */ | |
341 | ||
342 | static void | |
fba45db2 | 343 | add_old_header_file (char *name, int instance) |
c906108c | 344 | { |
dd707e8e | 345 | struct header_file *p = HEADER_FILES (dbxread_objfile); |
52f0bd74 | 346 | int i; |
c906108c | 347 | |
dd707e8e | 348 | for (i = 0; i < N_HEADER_FILES (dbxread_objfile); i++) |
0ba1096a | 349 | if (filename_cmp (p[i].name, name) == 0 && instance == p[i].instance) |
c906108c SS |
350 | { |
351 | add_this_object_header_file (i); | |
352 | return; | |
353 | } | |
23136709 | 354 | repeated_header_complaint (name, symnum); |
c906108c SS |
355 | } |
356 | ||
357 | /* Add to this file a "new" header file: definitions for its types follow. | |
358 | NAME is the header file's name. | |
359 | Most often this happens only once for each distinct header file, | |
360 | but not necessarily. If it happens more than once, INSTANCE has | |
361 | a different value each time, and references to the header file | |
362 | use INSTANCE values to select among them. | |
363 | ||
364 | dbx output contains "begin" and "end" markers for each new header file, | |
365 | but at this level we just need to know which files there have been; | |
366 | so we record the file when its "begin" is seen and ignore the "end". */ | |
367 | ||
368 | static void | |
fba45db2 | 369 | add_new_header_file (char *name, int instance) |
c906108c | 370 | { |
52f0bd74 AC |
371 | int i; |
372 | struct header_file *hfile; | |
c906108c SS |
373 | |
374 | /* Make sure there is room for one more header file. */ | |
375 | ||
dd707e8e | 376 | i = N_ALLOCATED_HEADER_FILES (dbxread_objfile); |
c906108c | 377 | |
dd707e8e | 378 | if (N_HEADER_FILES (dbxread_objfile) == i) |
c906108c SS |
379 | { |
380 | if (i == 0) | |
381 | { | |
dd707e8e TT |
382 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = 10; |
383 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
c906108c SS |
384 | xmalloc (10 * sizeof (struct header_file)); |
385 | } | |
386 | else | |
387 | { | |
388 | i *= 2; | |
dd707e8e TT |
389 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = i; |
390 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
391 | xrealloc ((char *) HEADER_FILES (dbxread_objfile), | |
c906108c SS |
392 | (i * sizeof (struct header_file))); |
393 | } | |
394 | } | |
395 | ||
396 | /* Create an entry for this header file. */ | |
397 | ||
dd707e8e TT |
398 | i = N_HEADER_FILES (dbxread_objfile)++; |
399 | hfile = HEADER_FILES (dbxread_objfile) + i; | |
1b36a34b | 400 | hfile->name = xstrdup (name); |
c906108c SS |
401 | hfile->instance = instance; |
402 | hfile->length = 10; | |
8d749320 | 403 | hfile->vector = XCNEWVEC (struct type *, 10); |
c906108c SS |
404 | |
405 | add_this_object_header_file (i); | |
406 | } | |
407 | ||
408 | #if 0 | |
409 | static struct type ** | |
fba45db2 | 410 | explicit_lookup_type (int real_filenum, int index) |
c906108c | 411 | { |
dd707e8e | 412 | struct header_file *f = &HEADER_FILES (dbxread_objfile)[real_filenum]; |
c906108c SS |
413 | |
414 | if (index >= f->length) | |
415 | { | |
416 | f->length *= 2; | |
417 | f->vector = (struct type **) | |
418 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
419 | memset (&f->vector[f->length / 2], | |
c5aa993b | 420 | '\0', f->length * sizeof (struct type *) / 2); |
c906108c SS |
421 | } |
422 | return &f->vector[index]; | |
423 | } | |
424 | #endif | |
425 | \f | |
426 | static void | |
8dddcb8f TT |
427 | record_minimal_symbol (minimal_symbol_reader &reader, |
428 | const char *name, CORE_ADDR address, int type, | |
fba45db2 | 429 | struct objfile *objfile) |
c906108c SS |
430 | { |
431 | enum minimal_symbol_type ms_type; | |
432 | int section; | |
c906108c SS |
433 | |
434 | switch (type) | |
435 | { | |
436 | case N_TEXT | N_EXT: | |
437 | ms_type = mst_text; | |
b8fbeb18 | 438 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
439 | break; |
440 | case N_DATA | N_EXT: | |
441 | ms_type = mst_data; | |
b8fbeb18 | 442 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
443 | break; |
444 | case N_BSS | N_EXT: | |
445 | ms_type = mst_bss; | |
b8fbeb18 | 446 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
447 | break; |
448 | case N_ABS | N_EXT: | |
449 | ms_type = mst_abs; | |
450 | section = -1; | |
c906108c SS |
451 | break; |
452 | #ifdef N_SETV | |
453 | case N_SETV | N_EXT: | |
454 | ms_type = mst_data; | |
b8fbeb18 | 455 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
456 | break; |
457 | case N_SETV: | |
458 | /* I don't think this type actually exists; since a N_SETV is the result | |
c5aa993b JM |
459 | of going over many .o files, it doesn't make sense to have one |
460 | file local. */ | |
c906108c | 461 | ms_type = mst_file_data; |
b8fbeb18 | 462 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
463 | break; |
464 | #endif | |
465 | case N_TEXT: | |
466 | case N_NBTEXT: | |
467 | case N_FN: | |
468 | case N_FN_SEQ: | |
469 | ms_type = mst_file_text; | |
b8fbeb18 | 470 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
471 | break; |
472 | case N_DATA: | |
473 | ms_type = mst_file_data; | |
474 | ||
475 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
c5aa993b JM |
476 | Record it as global even if it's local, not global, so |
477 | lookup_minimal_symbol can find it. We don't check symbol_leading_char | |
478 | because for SunOS4 it always is '_'. */ | |
91f54576 | 479 | if (name[8] == 'C' && strcmp ("__DYNAMIC", name) == 0) |
c906108c SS |
480 | ms_type = mst_data; |
481 | ||
482 | /* Same with virtual function tables, both global and static. */ | |
483 | { | |
bec71544 | 484 | const char *tempstring = name; |
9a619af0 | 485 | |
c906108c SS |
486 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) |
487 | ++tempstring; | |
015a42b4 | 488 | if (is_vtable_name (tempstring)) |
c906108c SS |
489 | ms_type = mst_data; |
490 | } | |
b8fbeb18 | 491 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
492 | break; |
493 | case N_BSS: | |
494 | ms_type = mst_file_bss; | |
b8fbeb18 | 495 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
496 | break; |
497 | default: | |
498 | ms_type = mst_unknown; | |
499 | section = -1; | |
c906108c | 500 | break; |
c5aa993b | 501 | } |
c906108c SS |
502 | |
503 | if ((ms_type == mst_file_text || ms_type == mst_text) | |
504 | && address < lowest_text_address) | |
505 | lowest_text_address = address; | |
506 | ||
8dddcb8f | 507 | reader.record_with_info (name, address, ms_type, section); |
c906108c SS |
508 | } |
509 | \f | |
510 | /* Scan and build partial symbols for a symbol file. | |
511 | We have been initialized by a call to dbx_symfile_init, which | |
512 | put all the relevant info into a "struct dbx_symfile_info", | |
f4352531 | 513 | hung off the objfile structure. */ |
c906108c SS |
514 | |
515 | static void | |
b15cc25c | 516 | dbx_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
517 | { |
518 | bfd *sym_bfd; | |
519 | int val; | |
520 | struct cleanup *back_to; | |
521 | ||
c906108c SS |
522 | sym_bfd = objfile->obfd; |
523 | ||
524 | /* .o and .nlm files are relocatables with text, data and bss segs based at | |
525 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for | |
526 | symbols with a value of 0. */ | |
527 | ||
528 | symfile_relocatable = bfd_get_file_flags (sym_bfd) & HAS_RELOC; | |
529 | ||
c906108c SS |
530 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); |
531 | if (val < 0) | |
4262abfb | 532 | perror_with_name (objfile_name (objfile)); |
c906108c | 533 | |
de1d8fb9 TG |
534 | /* Size the symbol table. */ |
535 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) | |
c906108c SS |
536 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); |
537 | ||
538 | symbol_size = DBX_SYMBOL_SIZE (objfile); | |
539 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
540 | ||
541 | free_pending_blocks (); | |
a0b3c4fd | 542 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c | 543 | |
d25e8719 | 544 | minimal_symbol_reader reader (objfile); |
c906108c | 545 | |
0963b4bd | 546 | /* Read stabs data from executable file and define symbols. */ |
c906108c | 547 | |
8dddcb8f | 548 | read_dbx_symtab (reader, objfile); |
c906108c | 549 | |
c906108c | 550 | /* Install any minimal symbols that have been collected as the current |
0963b4bd | 551 | minimal symbols for this objfile. */ |
c906108c | 552 | |
d25e8719 | 553 | reader.install (); |
c906108c SS |
554 | |
555 | do_cleanups (back_to); | |
556 | } | |
557 | ||
558 | /* Initialize anything that needs initializing when a completely new | |
559 | symbol file is specified (not just adding some symbols from another | |
560 | file, e.g. a shared library). */ | |
561 | ||
562 | static void | |
fba45db2 | 563 | dbx_new_init (struct objfile *ignore) |
c906108c SS |
564 | { |
565 | stabsread_new_init (); | |
566 | buildsym_new_init (); | |
567 | init_header_files (); | |
568 | } | |
569 | ||
570 | ||
571 | /* dbx_symfile_init () | |
572 | is the dbx-specific initialization routine for reading symbols. | |
573 | It is passed a struct objfile which contains, among other things, | |
574 | the BFD for the file whose symbols are being read, and a slot for a pointer | |
575 | to "private data" which we fill with goodies. | |
576 | ||
577 | We read the string table into malloc'd space and stash a pointer to it. | |
578 | ||
579 | Since BFD doesn't know how to read debug symbols in a format-independent | |
580 | way (and may never do so...), we have to do it ourselves. We will never | |
0963b4bd | 581 | be called unless this is an a.out (or very similar) file. |
c906108c SS |
582 | FIXME, there should be a cleaner peephole into the BFD environment here. */ |
583 | ||
c5aa993b | 584 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
c906108c SS |
585 | |
586 | static void | |
fba45db2 | 587 | dbx_symfile_init (struct objfile *objfile) |
c906108c SS |
588 | { |
589 | int val; | |
590 | bfd *sym_bfd = objfile->obfd; | |
591 | char *name = bfd_get_filename (sym_bfd); | |
592 | asection *text_sect; | |
593 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; | |
d2f4b8fe | 594 | struct dbx_symfile_info *dbx; |
c906108c | 595 | |
0963b4bd | 596 | /* Allocate struct to keep track of the symfile. */ |
d2f4b8fe TT |
597 | dbx = XCNEW (struct dbx_symfile_info); |
598 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c SS |
599 | |
600 | DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
601 | DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data"); | |
602 | DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss"); | |
603 | ||
0963b4bd | 604 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c SS |
605 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
606 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
607 | ||
0963b4bd | 608 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c | 609 | |
c906108c SS |
610 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
611 | if (!text_sect) | |
8a3fe4f8 | 612 | error (_("Can't find .text section in symbol file")); |
c906108c SS |
613 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
614 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
615 | ||
616 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); | |
617 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); | |
618 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; | |
619 | ||
8b92e4d5 EZ |
620 | /* Read the string table and stash it away in the objfile_obstack. |
621 | When we blow away the objfile the string table goes away as well. | |
c906108c SS |
622 | Note that gdb used to use the results of attempting to malloc the |
623 | string table, based on the size it read, as a form of sanity check | |
624 | for botched byte swapping, on the theory that a byte swapped string | |
625 | table size would be so totally bogus that the malloc would fail. Now | |
8b92e4d5 | 626 | that we put in on the objfile_obstack, we can't do this since gdb gets |
c906108c SS |
627 | a fatal error (out of virtual memory) if the size is bogus. We can |
628 | however at least check to see if the size is less than the size of | |
629 | the size field itself, or larger than the size of the entire file. | |
630 | Note that all valid string tables have a size greater than zero, since | |
0963b4bd | 631 | the bytes used to hold the size are included in the count. */ |
c906108c SS |
632 | |
633 | if (STRING_TABLE_OFFSET == 0) | |
634 | { | |
635 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET | |
c5aa993b | 636 | will never be zero, even when there is no string table. This |
0963b4bd | 637 | would appear to be a bug in bfd. */ |
c906108c SS |
638 | DBX_STRINGTAB_SIZE (objfile) = 0; |
639 | DBX_STRINGTAB (objfile) = NULL; | |
640 | } | |
641 | else | |
642 | { | |
643 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); | |
644 | if (val < 0) | |
645 | perror_with_name (name); | |
c5aa993b | 646 | |
4efb68b1 AC |
647 | memset (size_temp, 0, sizeof (size_temp)); |
648 | val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd); | |
c906108c SS |
649 | if (val < 0) |
650 | { | |
651 | perror_with_name (name); | |
652 | } | |
653 | else if (val == 0) | |
654 | { | |
655 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
656 | EOF if there is no string table, and attempting to read the size | |
0963b4bd | 657 | from EOF will read zero bytes. */ |
c906108c SS |
658 | DBX_STRINGTAB_SIZE (objfile) = 0; |
659 | DBX_STRINGTAB (objfile) = NULL; | |
660 | } | |
661 | else | |
662 | { | |
663 | /* Read some data that would appear to be the string table size. | |
664 | If there really is a string table, then it is probably the right | |
665 | size. Byteswap if necessary and validate the size. Note that | |
666 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
667 | random data that happened to be at STRING_TABLE_OFFSET, because | |
668 | bfd can't tell us there is no string table, the sanity checks may | |
0963b4bd | 669 | or may not catch this. */ |
c906108c | 670 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); |
c5aa993b | 671 | |
c906108c SS |
672 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) |
673 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
8a3fe4f8 | 674 | error (_("ridiculous string table size (%d bytes)."), |
c906108c | 675 | DBX_STRINGTAB_SIZE (objfile)); |
c5aa993b | 676 | |
c906108c | 677 | DBX_STRINGTAB (objfile) = |
8b92e4d5 | 678 | (char *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
679 | DBX_STRINGTAB_SIZE (objfile)); |
680 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); | |
c5aa993b | 681 | |
c906108c | 682 | /* Now read in the string table in one big gulp. */ |
c5aa993b | 683 | |
c906108c SS |
684 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
685 | if (val < 0) | |
686 | perror_with_name (name); | |
3a42e9d0 AM |
687 | val = bfd_bread (DBX_STRINGTAB (objfile), |
688 | DBX_STRINGTAB_SIZE (objfile), | |
689 | sym_bfd); | |
c906108c SS |
690 | if (val != DBX_STRINGTAB_SIZE (objfile)) |
691 | perror_with_name (name); | |
692 | } | |
693 | } | |
694 | } | |
695 | ||
696 | /* Perform any local cleanups required when we are done with a particular | |
697 | objfile. I.E, we are in the process of discarding all symbol information | |
698 | for an objfile, freeing up all memory held for it, and unlinking the | |
0963b4bd | 699 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
700 | |
701 | static void | |
fba45db2 | 702 | dbx_symfile_finish (struct objfile *objfile) |
c906108c | 703 | { |
d2f4b8fe TT |
704 | free_header_files (); |
705 | } | |
706 | ||
707 | static void | |
708 | dbx_free_symfile_info (struct objfile *objfile, void *arg) | |
709 | { | |
9a3c8263 | 710 | struct dbx_symfile_info *dbx = (struct dbx_symfile_info *) arg; |
d2f4b8fe TT |
711 | |
712 | if (dbx->header_files != NULL) | |
c906108c | 713 | { |
d2f4b8fe TT |
714 | int i = dbx->n_header_files; |
715 | struct header_file *hfiles = dbx->header_files; | |
c906108c | 716 | |
d2f4b8fe TT |
717 | while (--i >= 0) |
718 | { | |
719 | xfree (hfiles[i].name); | |
720 | xfree (hfiles[i].vector); | |
c906108c | 721 | } |
d2f4b8fe | 722 | xfree (hfiles); |
c906108c | 723 | } |
d2f4b8fe TT |
724 | |
725 | xfree (dbx); | |
c906108c | 726 | } |
d2f4b8fe | 727 | |
c906108c | 728 | \f |
c5aa993b | 729 | |
c906108c SS |
730 | /* Buffer for reading the symbol table entries. */ |
731 | static struct external_nlist symbuf[4096]; | |
732 | static int symbuf_idx; | |
733 | static int symbuf_end; | |
734 | ||
c906108c SS |
735 | /* Name of last function encountered. Used in Solaris to approximate |
736 | object file boundaries. */ | |
737 | static char *last_function_name; | |
738 | ||
739 | /* The address in memory of the string table of the object file we are | |
740 | reading (which might not be the "main" object file, but might be a | |
741 | shared library or some other dynamically loaded thing). This is | |
742 | set by read_dbx_symtab when building psymtabs, and by | |
743 | read_ofile_symtab when building symtabs, and is used only by | |
744 | next_symbol_text. FIXME: If that is true, we don't need it when | |
745 | building psymtabs, right? */ | |
746 | static char *stringtab_global; | |
747 | ||
748 | /* These variables are used to control fill_symbuf when the stabs | |
749 | symbols are not contiguous (as may be the case when a COFF file is | |
750 | linked using --split-by-reloc). */ | |
751 | static struct stab_section_list *symbuf_sections; | |
752 | static unsigned int symbuf_left; | |
753 | static unsigned int symbuf_read; | |
754 | ||
086df311 DJ |
755 | /* This variable stores a global stabs buffer, if we read stabs into |
756 | memory in one chunk in order to process relocations. */ | |
757 | static bfd_byte *stabs_data; | |
758 | ||
c906108c SS |
759 | /* Refill the symbol table input buffer |
760 | and set the variables that control fetching entries from it. | |
761 | Reports an error if no data available. | |
762 | This function can read past the end of the symbol table | |
763 | (into the string table) but this does no harm. */ | |
764 | ||
765 | static void | |
fba45db2 | 766 | fill_symbuf (bfd *sym_bfd) |
c906108c SS |
767 | { |
768 | unsigned int count; | |
769 | int nbytes; | |
770 | ||
086df311 DJ |
771 | if (stabs_data) |
772 | { | |
773 | nbytes = sizeof (symbuf); | |
774 | if (nbytes > symbuf_left) | |
775 | nbytes = symbuf_left; | |
776 | memcpy (symbuf, stabs_data + symbuf_read, nbytes); | |
777 | } | |
778 | else if (symbuf_sections == NULL) | |
779 | { | |
780 | count = sizeof (symbuf); | |
781 | nbytes = bfd_bread (symbuf, count, sym_bfd); | |
782 | } | |
c906108c SS |
783 | else |
784 | { | |
785 | if (symbuf_left <= 0) | |
786 | { | |
787 | file_ptr filepos = symbuf_sections->section->filepos; | |
9a619af0 | 788 | |
c906108c SS |
789 | if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0) |
790 | perror_with_name (bfd_get_filename (sym_bfd)); | |
791 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section); | |
792 | symbol_table_offset = filepos - symbuf_read; | |
793 | symbuf_sections = symbuf_sections->next; | |
794 | } | |
795 | ||
796 | count = symbuf_left; | |
797 | if (count > sizeof (symbuf)) | |
798 | count = sizeof (symbuf); | |
086df311 | 799 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
c906108c SS |
800 | } |
801 | ||
c906108c SS |
802 | if (nbytes < 0) |
803 | perror_with_name (bfd_get_filename (sym_bfd)); | |
804 | else if (nbytes == 0) | |
8a3fe4f8 | 805 | error (_("Premature end of file reading symbol table")); |
c906108c SS |
806 | symbuf_end = nbytes / symbol_size; |
807 | symbuf_idx = 0; | |
808 | symbuf_left -= nbytes; | |
809 | symbuf_read += nbytes; | |
810 | } | |
811 | ||
086df311 DJ |
812 | static void |
813 | stabs_seek (int sym_offset) | |
814 | { | |
815 | if (stabs_data) | |
816 | { | |
817 | symbuf_read += sym_offset; | |
818 | symbuf_left -= sym_offset; | |
819 | } | |
820 | else | |
821 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); | |
822 | } | |
823 | ||
c906108c SS |
824 | #define INTERNALIZE_SYMBOL(intern, extern, abfd) \ |
825 | { \ | |
c906108c | 826 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \ |
83b94be5 AM |
827 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \ |
828 | (intern).n_other = 0; \ | |
c906108c | 829 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \ |
40b3352b L |
830 | if (bfd_get_sign_extend_vma (abfd)) \ |
831 | (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \ | |
832 | else \ | |
833 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \ | |
c906108c SS |
834 | } |
835 | ||
836 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
837 | that hasn't been swapped. Swap the symbol at the same time | |
838 | that symbuf_idx is incremented. */ | |
839 | ||
840 | /* dbx allows the text of a symbol name to be continued into the | |
841 | next symbol name! When such a continuation is encountered | |
842 | (a \ at the end of the text of a name) | |
843 | call this function to get the continuation. */ | |
844 | ||
845 | static char * | |
fba45db2 | 846 | dbx_next_symbol_text (struct objfile *objfile) |
c906108c SS |
847 | { |
848 | struct internal_nlist nlist; | |
849 | ||
850 | if (symbuf_idx == symbuf_end) | |
851 | fill_symbuf (symfile_bfd); | |
852 | ||
853 | symnum++; | |
c5aa993b | 854 | INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], symfile_bfd); |
c906108c SS |
855 | OBJSTAT (objfile, n_stabs++); |
856 | ||
857 | symbuf_idx++; | |
858 | ||
859 | return nlist.n_strx + stringtab_global + file_string_table_offset; | |
860 | } | |
861 | \f | |
862 | /* Initialize the list of bincls to contain none and have some | |
863 | allocated. */ | |
864 | ||
865 | static void | |
fba45db2 | 866 | init_bincl_list (int number, struct objfile *objfile) |
c906108c SS |
867 | { |
868 | bincls_allocated = number; | |
8d749320 SM |
869 | next_bincl = bincl_list = XNEWVEC (struct header_file_location, |
870 | bincls_allocated); | |
c906108c SS |
871 | } |
872 | ||
873 | /* Add a bincl to the list. */ | |
874 | ||
875 | static void | |
fba45db2 | 876 | add_bincl_to_list (struct partial_symtab *pst, char *name, int instance) |
c906108c SS |
877 | { |
878 | if (next_bincl >= bincl_list + bincls_allocated) | |
879 | { | |
880 | int offset = next_bincl - bincl_list; | |
9a619af0 | 881 | |
c906108c SS |
882 | bincls_allocated *= 2; |
883 | bincl_list = (struct header_file_location *) | |
0efffb96 AC |
884 | xrealloc ((char *) bincl_list, |
885 | bincls_allocated * sizeof (struct header_file_location)); | |
c906108c SS |
886 | next_bincl = bincl_list + offset; |
887 | } | |
888 | next_bincl->pst = pst; | |
889 | next_bincl->instance = instance; | |
890 | next_bincl++->name = name; | |
891 | } | |
892 | ||
893 | /* Given a name, value pair, find the corresponding | |
894 | bincl in the list. Return the partial symtab associated | |
895 | with that header_file_location. */ | |
896 | ||
897 | static struct partial_symtab * | |
fba45db2 | 898 | find_corresponding_bincl_psymtab (char *name, int instance) |
c906108c SS |
899 | { |
900 | struct header_file_location *bincl; | |
901 | ||
902 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
903 | if (bincl->instance == instance | |
6314a349 | 904 | && strcmp (name, bincl->name) == 0) |
c906108c SS |
905 | return bincl->pst; |
906 | ||
23136709 | 907 | repeated_header_complaint (name, symnum); |
c906108c SS |
908 | return (struct partial_symtab *) 0; |
909 | } | |
910 | ||
911 | /* Free the storage allocated for the bincl list. */ | |
912 | ||
913 | static void | |
fba45db2 | 914 | free_bincl_list (struct objfile *objfile) |
c906108c | 915 | { |
2dc74dc1 | 916 | xfree (bincl_list); |
c906108c SS |
917 | bincls_allocated = 0; |
918 | } | |
919 | ||
74b7792f AC |
920 | static void |
921 | do_free_bincl_list_cleanup (void *objfile) | |
922 | { | |
9a3c8263 | 923 | free_bincl_list ((struct objfile *) objfile); |
74b7792f AC |
924 | } |
925 | ||
926 | static struct cleanup * | |
927 | make_cleanup_free_bincl_list (struct objfile *objfile) | |
928 | { | |
929 | return make_cleanup (do_free_bincl_list_cleanup, objfile); | |
930 | } | |
931 | ||
6a34fd2f EZ |
932 | /* Set namestring based on nlist. If the string table index is invalid, |
933 | give a fake name, and print a single error message per symbol file read, | |
934 | rather than abort the symbol reading or flood the user with messages. */ | |
935 | ||
936 | static char * | |
83b94be5 | 937 | set_namestring (struct objfile *objfile, const struct internal_nlist *nlist) |
6a34fd2f EZ |
938 | { |
939 | char *namestring; | |
940 | ||
5409dacf JK |
941 | if (nlist->n_strx + file_string_table_offset |
942 | >= DBX_STRINGTAB_SIZE (objfile) | |
943 | || nlist->n_strx + file_string_table_offset < nlist->n_strx) | |
6a34fd2f | 944 | { |
3e43a32a MS |
945 | complaint (&symfile_complaints, |
946 | _("bad string table offset in symbol %d"), | |
23136709 | 947 | symnum); |
6a34fd2f EZ |
948 | namestring = "<bad string table offset>"; |
949 | } | |
950 | else | |
83b94be5 AM |
951 | namestring = (nlist->n_strx + file_string_table_offset |
952 | + DBX_STRINGTAB (objfile)); | |
6a34fd2f EZ |
953 | return namestring; |
954 | } | |
955 | ||
a78f21af | 956 | static CORE_ADDR |
72b9f47f | 957 | find_stab_function_addr (char *namestring, const char *filename, |
4867e41e DM |
958 | struct objfile *objfile) |
959 | { | |
3b7344d5 | 960 | struct bound_minimal_symbol msym; |
4867e41e DM |
961 | char *p; |
962 | int n; | |
963 | ||
964 | p = strchr (namestring, ':'); | |
965 | if (p == NULL) | |
966 | p = namestring; | |
967 | n = p - namestring; | |
224c3ddb | 968 | p = (char *) alloca (n + 2); |
4867e41e DM |
969 | strncpy (p, namestring, n); |
970 | p[n] = 0; | |
971 | ||
972 | msym = lookup_minimal_symbol (p, filename, objfile); | |
3b7344d5 | 973 | if (msym.minsym == NULL) |
4867e41e DM |
974 | { |
975 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
976 | try again with an appended underscore if the minimal symbol | |
977 | was not found. */ | |
978 | p[n] = '_'; | |
979 | p[n + 1] = 0; | |
980 | msym = lookup_minimal_symbol (p, filename, objfile); | |
981 | } | |
982 | ||
3b7344d5 | 983 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 984 | { |
0963b4bd | 985 | /* Try again without the filename. */ |
4867e41e DM |
986 | p[n] = 0; |
987 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
988 | } | |
3b7344d5 | 989 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 990 | { |
0963b4bd | 991 | /* And try again for Sun Fortran, but without the filename. */ |
4867e41e DM |
992 | p[n] = '_'; |
993 | p[n + 1] = 0; | |
994 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
995 | } | |
996 | ||
77e371c0 | 997 | return msym.minsym == NULL ? 0 : BMSYMBOL_VALUE_ADDRESS (msym); |
4867e41e | 998 | } |
4867e41e | 999 | |
23136709 KB |
1000 | static void |
1001 | function_outside_compilation_unit_complaint (const char *arg1) | |
1002 | { | |
1003 | complaint (&symfile_complaints, | |
3e43a32a MS |
1004 | _("function `%s' appears to be defined " |
1005 | "outside of all compilation units"), | |
23136709 KB |
1006 | arg1); |
1007 | } | |
1008 | ||
d4f3574e | 1009 | /* Setup partial_symtab's describing each source file for which |
0963b4bd | 1010 | debugging information is available. */ |
c906108c SS |
1011 | |
1012 | static void | |
8dddcb8f | 1013 | read_dbx_symtab (minimal_symbol_reader &reader, struct objfile *objfile) |
c906108c | 1014 | { |
5e2b427d | 1015 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0963b4bd | 1016 | struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch. */ |
c906108c | 1017 | struct internal_nlist nlist; |
d4f3574e SS |
1018 | CORE_ADDR text_addr; |
1019 | int text_size; | |
71c25dea TT |
1020 | char *sym_name; |
1021 | int sym_len; | |
c906108c | 1022 | |
52f0bd74 | 1023 | char *namestring; |
c906108c SS |
1024 | int nsl; |
1025 | int past_first_source_file = 0; | |
c906108c SS |
1026 | CORE_ADDR last_function_start = 0; |
1027 | struct cleanup *back_to; | |
1028 | bfd *abfd; | |
1029 | int textlow_not_set; | |
7c8a5605 | 1030 | int data_sect_index; |
c906108c | 1031 | |
0963b4bd | 1032 | /* Current partial symtab. */ |
c906108c SS |
1033 | struct partial_symtab *pst; |
1034 | ||
0963b4bd | 1035 | /* List of current psymtab's include files. */ |
0d5cff50 | 1036 | const char **psymtab_include_list; |
c906108c SS |
1037 | int includes_allocated; |
1038 | int includes_used; | |
1039 | ||
0963b4bd | 1040 | /* Index within current psymtab dependency list. */ |
c906108c SS |
1041 | struct partial_symtab **dependency_list; |
1042 | int dependencies_used, dependencies_allocated; | |
1043 | ||
d4f3574e SS |
1044 | text_addr = DBX_TEXT_ADDR (objfile); |
1045 | text_size = DBX_TEXT_SIZE (objfile); | |
1046 | ||
c906108c SS |
1047 | /* FIXME. We probably want to change stringtab_global rather than add this |
1048 | while processing every symbol entry. FIXME. */ | |
1049 | file_string_table_offset = 0; | |
1050 | next_file_string_table_offset = 0; | |
1051 | ||
1052 | stringtab_global = DBX_STRINGTAB (objfile); | |
c5aa993b | 1053 | |
c906108c SS |
1054 | pst = (struct partial_symtab *) 0; |
1055 | ||
1056 | includes_allocated = 30; | |
1057 | includes_used = 0; | |
0d5cff50 DE |
1058 | psymtab_include_list = (const char **) alloca (includes_allocated * |
1059 | sizeof (const char *)); | |
c906108c SS |
1060 | |
1061 | dependencies_allocated = 30; | |
1062 | dependencies_used = 0; | |
1063 | dependency_list = | |
1064 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1065 | sizeof (struct partial_symtab *)); | |
1066 | ||
1067 | /* Init bincl list */ | |
1068 | init_bincl_list (20, objfile); | |
74b7792f | 1069 | back_to = make_cleanup_free_bincl_list (objfile); |
c906108c | 1070 | |
46212e0b | 1071 | set_last_source_file (NULL); |
c906108c | 1072 | |
96baa820 | 1073 | lowest_text_address = (CORE_ADDR) -1; |
c906108c | 1074 | |
0963b4bd | 1075 | symfile_bfd = objfile->obfd; /* For next_text_symbol. */ |
c906108c SS |
1076 | abfd = objfile->obfd; |
1077 | symbuf_end = symbuf_idx = 0; | |
1078 | next_symbol_text_func = dbx_next_symbol_text; | |
1079 | textlow_not_set = 1; | |
1080 | has_line_numbers = 0; | |
1081 | ||
4f49b26b JB |
1082 | /* FIXME: jimb/2003-09-12: We don't apply the right section's offset |
1083 | to global and static variables. The stab for a global or static | |
1084 | variable doesn't give us any indication of which section it's in, | |
1085 | so we can't tell immediately which offset in | |
1086 | objfile->section_offsets we should apply to the variable's | |
1087 | address. | |
1088 | ||
1089 | We could certainly find out which section contains the variable | |
1090 | by looking up the variable's unrelocated address with | |
1091 | find_pc_section, but that would be expensive; this is the | |
1092 | function that constructs the partial symbol tables by examining | |
1093 | every symbol in the entire executable, and it's | |
1094 | performance-critical. So that expense would not be welcome. I'm | |
1095 | not sure what to do about this at the moment. | |
1096 | ||
1097 | What we have done for years is to simply assume that the .data | |
1098 | section's offset is appropriate for all global and static | |
1099 | variables. Recently, this was expanded to fall back to the .bss | |
1100 | section's offset if there is no .data section, and then to the | |
1101 | .rodata section's offset. */ | |
7c8a5605 JB |
1102 | data_sect_index = objfile->sect_index_data; |
1103 | if (data_sect_index == -1) | |
1104 | data_sect_index = SECT_OFF_BSS (objfile); | |
2a13f9bc JB |
1105 | if (data_sect_index == -1) |
1106 | data_sect_index = SECT_OFF_RODATA (objfile); | |
d646061f JB |
1107 | |
1108 | /* If data_sect_index is still -1, that's okay. It's perfectly fine | |
1109 | for the file to have no .data, no .bss, and no .text at all, if | |
1110 | it also has no global or static variables. If it does, we will | |
1111 | get an internal error from an ANOFFSET macro below when we try to | |
1112 | use data_sect_index. */ | |
7c8a5605 | 1113 | |
c906108c SS |
1114 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
1115 | { | |
0963b4bd MS |
1116 | /* Get the symbol for this run and pull out some info. */ |
1117 | QUIT; /* Allow this to be interruptable. */ | |
c906108c SS |
1118 | if (symbuf_idx == symbuf_end) |
1119 | fill_symbuf (abfd); | |
1120 | bufp = &symbuf[symbuf_idx++]; | |
1121 | ||
1122 | /* | |
1123 | * Special case to speed up readin. | |
1124 | */ | |
1125 | if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE) | |
1126 | { | |
1127 | has_line_numbers = 1; | |
1128 | continue; | |
1129 | } | |
1130 | ||
1131 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
1132 | OBJSTAT (objfile, n_stabs++); | |
1133 | ||
1134 | /* Ok. There is a lot of code duplicated in the rest of this | |
1135 | switch statement (for efficiency reasons). Since I don't | |
1136 | like duplicating code, I will do my penance here, and | |
1137 | describe the code which is duplicated: | |
1138 | ||
c5aa993b JM |
1139 | *) The assignment to namestring. |
1140 | *) The call to strchr. | |
b021a221 | 1141 | *) The addition of a partial symbol the two partial |
c5aa993b | 1142 | symbol lists. This last is a large section of code, so |
0963b4bd | 1143 | I've imbedded it in the following macro. */ |
c5aa993b | 1144 | |
6a34fd2f EZ |
1145 | switch (nlist.n_type) |
1146 | { | |
6a34fd2f EZ |
1147 | /* |
1148 | * Standard, external, non-debugger, symbols | |
1149 | */ | |
1150 | ||
9ce5d3bb DE |
1151 | case N_TEXT | N_EXT: |
1152 | case N_NBTEXT | N_EXT: | |
6a34fd2f EZ |
1153 | goto record_it; |
1154 | ||
9ce5d3bb DE |
1155 | case N_DATA | N_EXT: |
1156 | case N_NBDATA | N_EXT: | |
6a34fd2f EZ |
1157 | goto record_it; |
1158 | ||
9ce5d3bb DE |
1159 | case N_BSS: |
1160 | case N_BSS | N_EXT: | |
1161 | case N_NBBSS | N_EXT: | |
1162 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
6a34fd2f EZ |
1163 | goto record_it; |
1164 | ||
9ce5d3bb | 1165 | case N_ABS | N_EXT: |
6a34fd2f | 1166 | record_it: |
83b94be5 | 1167 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1168 | |
8dddcb8f | 1169 | record_minimal_symbol (reader, namestring, nlist.n_value, |
6a34fd2f EZ |
1170 | nlist.n_type, objfile); /* Always */ |
1171 | continue; | |
1172 | ||
0963b4bd | 1173 | /* Standard, local, non-debugger, symbols. */ |
6a34fd2f | 1174 | |
9ce5d3bb | 1175 | case N_NBTEXT: |
6a34fd2f EZ |
1176 | |
1177 | /* We need to be able to deal with both N_FN or N_TEXT, | |
1178 | because we have no way of knowing whether the sys-supplied ld | |
1179 | or GNU ld was used to make the executable. Sequents throw | |
1180 | in another wrinkle -- they renumbered N_FN. */ | |
1181 | ||
9ce5d3bb DE |
1182 | case N_FN: |
1183 | case N_FN_SEQ: | |
1184 | case N_TEXT: | |
83b94be5 | 1185 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1186 | |
1187 | if ((namestring[0] == '-' && namestring[1] == 'l') | |
1188 | || (namestring[(nsl = strlen (namestring)) - 1] == 'o' | |
1189 | && namestring[nsl - 2] == '.')) | |
9ce5d3bb | 1190 | { |
2273f0ac TT |
1191 | nlist.n_value += ANOFFSET (objfile->section_offsets, |
1192 | SECT_OFF_TEXT (objfile)); | |
1193 | ||
9ce5d3bb DE |
1194 | if (past_first_source_file && pst |
1195 | /* The gould NP1 uses low values for .o and -l symbols | |
1196 | which are not the address. */ | |
1197 | && nlist.n_value >= pst->textlow) | |
1198 | { | |
8763cede DE |
1199 | dbx_end_psymtab (objfile, pst, psymtab_include_list, |
1200 | includes_used, symnum * symbol_size, | |
1201 | nlist.n_value > pst->texthigh | |
1202 | ? nlist.n_value : pst->texthigh, | |
1203 | dependency_list, dependencies_used, | |
1204 | textlow_not_set); | |
9ce5d3bb DE |
1205 | pst = (struct partial_symtab *) 0; |
1206 | includes_used = 0; | |
1207 | dependencies_used = 0; | |
578933ab | 1208 | has_line_numbers = 0; |
9ce5d3bb DE |
1209 | } |
1210 | else | |
1211 | past_first_source_file = 1; | |
9ce5d3bb | 1212 | } |
6a34fd2f | 1213 | else |
9ce5d3bb | 1214 | goto record_it; |
6a34fd2f EZ |
1215 | continue; |
1216 | ||
9ce5d3bb | 1217 | case N_DATA: |
6a34fd2f EZ |
1218 | goto record_it; |
1219 | ||
9ce5d3bb | 1220 | case N_UNDF | N_EXT: |
d4862372 JB |
1221 | /* The case (nlist.n_value != 0) is a "Fortran COMMON" symbol. |
1222 | We used to rely on the target to tell us whether it knows | |
1223 | where the symbol has been relocated to, but none of the | |
1224 | target implementations actually provided that operation. | |
1225 | So we just ignore the symbol, the same way we would do if | |
1226 | we had a target-side symbol lookup which returned no match. | |
1227 | ||
1228 | All other symbols (with nlist.n_value == 0), are really | |
1229 | undefined, and so we ignore them too. */ | |
1230 | continue; | |
6a34fd2f | 1231 | |
9ce5d3bb | 1232 | case N_UNDF: |
6a34fd2f | 1233 | if (processing_acc_compilation && nlist.n_strx == 1) |
9ce5d3bb DE |
1234 | { |
1235 | /* Deal with relative offsets in the string table | |
1236 | used in ELF+STAB under Solaris. If we want to use the | |
1237 | n_strx field, which contains the name of the file, | |
1238 | we must adjust file_string_table_offset *before* calling | |
1239 | set_namestring(). */ | |
1240 | past_first_source_file = 1; | |
1241 | file_string_table_offset = next_file_string_table_offset; | |
1242 | next_file_string_table_offset = | |
1243 | file_string_table_offset + nlist.n_value; | |
1244 | if (next_file_string_table_offset < file_string_table_offset) | |
1245 | error (_("string table offset backs up at %d"), symnum); | |
1246 | /* FIXME -- replace error() with complaint. */ | |
1247 | continue; | |
1248 | } | |
6a34fd2f EZ |
1249 | continue; |
1250 | ||
1251 | /* Lots of symbol types we can just ignore. */ | |
1252 | ||
9ce5d3bb DE |
1253 | case N_ABS: |
1254 | case N_NBDATA: | |
1255 | case N_NBBSS: | |
6a34fd2f EZ |
1256 | continue; |
1257 | ||
0963b4bd | 1258 | /* Keep going . . . */ |
6a34fd2f EZ |
1259 | |
1260 | /* | |
1261 | * Special symbol types for GNU | |
1262 | */ | |
9ce5d3bb DE |
1263 | case N_INDR: |
1264 | case N_INDR | N_EXT: | |
1265 | case N_SETA: | |
1266 | case N_SETA | N_EXT: | |
1267 | case N_SETT: | |
1268 | case N_SETT | N_EXT: | |
1269 | case N_SETD: | |
1270 | case N_SETD | N_EXT: | |
1271 | case N_SETB: | |
1272 | case N_SETB | N_EXT: | |
1273 | case N_SETV: | |
6a34fd2f EZ |
1274 | continue; |
1275 | ||
1276 | /* | |
1277 | * Debugger symbols | |
1278 | */ | |
1279 | ||
9ce5d3bb | 1280 | case N_SO: |
6a34fd2f EZ |
1281 | { |
1282 | CORE_ADDR valu; | |
1283 | static int prev_so_symnum = -10; | |
1284 | static int first_so_symnum; | |
0ba1096a | 1285 | const char *p; |
57c22c6c | 1286 | static char *dirname_nso; |
6a34fd2f EZ |
1287 | int prev_textlow_not_set; |
1288 | ||
063e58ba MD |
1289 | valu = nlist.n_value + ANOFFSET (objfile->section_offsets, |
1290 | SECT_OFF_TEXT (objfile)); | |
6a34fd2f EZ |
1291 | |
1292 | prev_textlow_not_set = textlow_not_set; | |
1293 | ||
6a34fd2f | 1294 | /* A zero value is probably an indication for the SunPRO 3.0 |
8763cede | 1295 | compiler. dbx_end_psymtab explicitly tests for zero, so |
6a34fd2f EZ |
1296 | don't relocate it. */ |
1297 | ||
203c3895 | 1298 | if (nlist.n_value == 0 |
5e2b427d | 1299 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
6a34fd2f EZ |
1300 | { |
1301 | textlow_not_set = 1; | |
1302 | valu = 0; | |
1303 | } | |
1304 | else | |
1305 | textlow_not_set = 0; | |
203c3895 | 1306 | |
6a34fd2f EZ |
1307 | past_first_source_file = 1; |
1308 | ||
1309 | if (prev_so_symnum != symnum - 1) | |
0963b4bd | 1310 | { /* Here if prev stab wasn't N_SO. */ |
6a34fd2f EZ |
1311 | first_so_symnum = symnum; |
1312 | ||
1313 | if (pst) | |
1314 | { | |
8763cede DE |
1315 | dbx_end_psymtab (objfile, pst, psymtab_include_list, |
1316 | includes_used, symnum * symbol_size, | |
1317 | valu > pst->texthigh | |
1318 | ? valu : pst->texthigh, | |
1319 | dependency_list, dependencies_used, | |
1320 | prev_textlow_not_set); | |
6a34fd2f EZ |
1321 | pst = (struct partial_symtab *) 0; |
1322 | includes_used = 0; | |
1323 | dependencies_used = 0; | |
578933ab | 1324 | has_line_numbers = 0; |
6a34fd2f EZ |
1325 | } |
1326 | } | |
1327 | ||
1328 | prev_so_symnum = symnum; | |
1329 | ||
0963b4bd | 1330 | /* End the current partial symtab and start a new one. */ |
6a34fd2f | 1331 | |
83b94be5 | 1332 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1333 | |
0963b4bd | 1334 | /* Null name means end of .o file. Don't start a new one. */ |
6a34fd2f EZ |
1335 | if (*namestring == '\000') |
1336 | continue; | |
1337 | ||
1338 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
1339 | The first one is a directory name; the second the file name. | |
1340 | If pst exists, is empty, and has a filename ending in '/', | |
0963b4bd | 1341 | we assume the previous N_SO was a directory name. */ |
6a34fd2f | 1342 | |
0ba1096a KT |
1343 | p = lbasename (namestring); |
1344 | if (p != namestring && *p == '\000') | |
57c22c6c BR |
1345 | { |
1346 | /* Save the directory name SOs locally, then save it into | |
0963b4bd | 1347 | the psymtab when it's created below. */ |
57c22c6c BR |
1348 | dirname_nso = namestring; |
1349 | continue; | |
1350 | } | |
6a34fd2f EZ |
1351 | |
1352 | /* Some other compilers (C++ ones in particular) emit useless | |
131fe1bb DE |
1353 | SOs for non-existant .c files. We ignore all subsequent SOs |
1354 | that immediately follow the first. */ | |
6a34fd2f EZ |
1355 | |
1356 | if (!pst) | |
57c22c6c | 1357 | { |
9ce5d3bb DE |
1358 | pst = start_psymtab (objfile, |
1359 | namestring, valu, | |
1360 | first_so_symnum * symbol_size, | |
1361 | objfile->global_psymbols.next, | |
1362 | objfile->static_psymbols.next); | |
57c22c6c BR |
1363 | pst->dirname = dirname_nso; |
1364 | dirname_nso = NULL; | |
1365 | } | |
6a34fd2f EZ |
1366 | continue; |
1367 | } | |
1368 | ||
9ce5d3bb | 1369 | case N_BINCL: |
6a34fd2f EZ |
1370 | { |
1371 | enum language tmp_language; | |
9a619af0 | 1372 | |
6a34fd2f EZ |
1373 | /* Add this bincl to the bincl_list for future EXCLs. No |
1374 | need to save the string; it'll be around until | |
0963b4bd | 1375 | read_dbx_symtab function returns. */ |
6a34fd2f | 1376 | |
83b94be5 | 1377 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1378 | tmp_language = deduce_language_from_filename (namestring); |
1379 | ||
1380 | /* Only change the psymtab's language if we've learned | |
1381 | something useful (eg. tmp_language is not language_unknown). | |
1382 | In addition, to match what start_subfile does, never change | |
1383 | from C++ to C. */ | |
1384 | if (tmp_language != language_unknown | |
1385 | && (tmp_language != language_c | |
1386 | || psymtab_language != language_cplus)) | |
d7f98cce | 1387 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1388 | |
1389 | if (pst == NULL) | |
9ce5d3bb DE |
1390 | { |
1391 | /* FIXME: we should not get here without a PST to work on. | |
1392 | Attempt to recover. */ | |
1393 | complaint (&symfile_complaints, | |
3e43a32a MS |
1394 | _("N_BINCL %s not in entries for " |
1395 | "any file, at symtab pos %d"), | |
9ce5d3bb DE |
1396 | namestring, symnum); |
1397 | continue; | |
1398 | } | |
6a34fd2f EZ |
1399 | add_bincl_to_list (pst, namestring, nlist.n_value); |
1400 | ||
0963b4bd | 1401 | /* Mark down an include file in the current psymtab. */ |
6a34fd2f EZ |
1402 | |
1403 | goto record_include_file; | |
1404 | } | |
1405 | ||
9ce5d3bb | 1406 | case N_SOL: |
6a34fd2f EZ |
1407 | { |
1408 | enum language tmp_language; | |
6a34fd2f | 1409 | |
0963b4bd | 1410 | /* Mark down an include file in the current psymtab. */ |
83b94be5 | 1411 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1412 | tmp_language = deduce_language_from_filename (namestring); |
1413 | ||
1414 | /* Only change the psymtab's language if we've learned | |
1415 | something useful (eg. tmp_language is not language_unknown). | |
1416 | In addition, to match what start_subfile does, never change | |
1417 | from C++ to C. */ | |
1418 | if (tmp_language != language_unknown | |
1419 | && (tmp_language != language_c | |
1420 | || psymtab_language != language_cplus)) | |
d7f98cce | 1421 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1422 | |
1423 | /* In C++, one may expect the same filename to come round many | |
1424 | times, when code is coming alternately from the main file | |
0963b4bd | 1425 | and from inline functions in other files. So I check to see |
6a34fd2f EZ |
1426 | if this is a file we've seen before -- either the main |
1427 | source file, or a previously included file. | |
1428 | ||
1429 | This seems to be a lot of time to be spending on N_SOL, but | |
1430 | things like "break c-exp.y:435" need to work (I | |
1431 | suppose the psymtab_include_list could be hashed or put | |
1432 | in a binary tree, if profiling shows this is a major hog). */ | |
0ba1096a | 1433 | if (pst && filename_cmp (namestring, pst->filename) == 0) |
9ce5d3bb | 1434 | continue; |
6a34fd2f | 1435 | { |
aa1ee363 | 1436 | int i; |
9a619af0 | 1437 | |
6a34fd2f | 1438 | for (i = 0; i < includes_used; i++) |
0ba1096a | 1439 | if (filename_cmp (namestring, psymtab_include_list[i]) == 0) |
6a34fd2f EZ |
1440 | { |
1441 | i = -1; | |
1442 | break; | |
1443 | } | |
1444 | if (i == -1) | |
1445 | continue; | |
1446 | } | |
1447 | ||
9ce5d3bb | 1448 | record_include_file: |
6a34fd2f EZ |
1449 | |
1450 | psymtab_include_list[includes_used++] = namestring; | |
1451 | if (includes_used >= includes_allocated) | |
9ce5d3bb | 1452 | { |
0d5cff50 | 1453 | const char **orig = psymtab_include_list; |
6a34fd2f | 1454 | |
0d5cff50 DE |
1455 | psymtab_include_list = (const char **) |
1456 | alloca ((includes_allocated *= 2) * sizeof (const char *)); | |
9ce5d3bb | 1457 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 1458 | includes_used * sizeof (const char *)); |
9ce5d3bb | 1459 | } |
6a34fd2f EZ |
1460 | continue; |
1461 | } | |
0963b4bd MS |
1462 | case N_LSYM: /* Typedef or automatic variable. */ |
1463 | case N_STSYM: /* Data seg var -- static. */ | |
9ce5d3bb DE |
1464 | case N_LCSYM: /* BSS " */ |
1465 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
1466 | case N_NBSTS: /* Gould nobase. */ | |
1467 | case N_NBLCS: /* symbols. */ | |
1468 | case N_FUN: | |
1469 | case N_GSYM: /* Global (extern) variable; can be | |
063e58ba | 1470 | data or bss (sigh FIXME). */ |
6a34fd2f EZ |
1471 | |
1472 | /* Following may probably be ignored; I'll leave them here | |
1473 | for now (until I do Pascal and Modula 2 extensions). */ | |
1474 | ||
9ce5d3bb | 1475 | case N_PC: /* I may or may not need this; I |
063e58ba | 1476 | suspect not. */ |
0963b4bd | 1477 | case N_M2C: /* I suspect that I can ignore this here. */ |
9ce5d3bb | 1478 | case N_SCOPE: /* Same. */ |
131fe1bb DE |
1479 | { |
1480 | char *p; | |
6a34fd2f | 1481 | |
83b94be5 | 1482 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1483 | |
1484 | /* See if this is an end of function stab. */ | |
1485 | if (pst && nlist.n_type == N_FUN && *namestring == '\000') | |
9ce5d3bb DE |
1486 | { |
1487 | CORE_ADDR valu; | |
1488 | ||
1489 | /* It's value is the size (in bytes) of the function for | |
1490 | function relative stabs, or the address of the function's | |
1491 | end for old style stabs. */ | |
1492 | valu = nlist.n_value + last_function_start; | |
1493 | if (pst->texthigh == 0 || valu > pst->texthigh) | |
1494 | pst->texthigh = valu; | |
1495 | break; | |
1496 | } | |
6a34fd2f EZ |
1497 | |
1498 | p = (char *) strchr (namestring, ':'); | |
1499 | if (!p) | |
0963b4bd | 1500 | continue; /* Not a debugging symbol. */ |
6a34fd2f | 1501 | |
71c25dea | 1502 | sym_len = 0; |
87bc73ea | 1503 | sym_name = NULL; /* pacify "gcc -Werror" */ |
71c25dea TT |
1504 | if (psymtab_language == language_cplus) |
1505 | { | |
2f408ecb PA |
1506 | std::string name (namestring, p - namestring); |
1507 | std::string new_name = cp_canonicalize_string (name.c_str ()); | |
1508 | if (!new_name.empty ()) | |
1509 | { | |
1510 | sym_len = new_name.length (); | |
224c3ddb | 1511 | sym_name = (char *) obstack_copy0 (&objfile->objfile_obstack, |
2f408ecb PA |
1512 | new_name.c_str (), |
1513 | sym_len); | |
1514 | } | |
1515 | } | |
71c25dea TT |
1516 | |
1517 | if (sym_len == 0) | |
1518 | { | |
1519 | sym_name = namestring; | |
1520 | sym_len = p - namestring; | |
1521 | } | |
1522 | ||
6a34fd2f EZ |
1523 | /* Main processing section for debugging symbols which |
1524 | the initial read through the symbol tables needs to worry | |
1525 | about. If we reach this point, the symbol which we are | |
1526 | considering is definitely one we are interested in. | |
1527 | p must also contain the (valid) index into the namestring | |
1528 | which indicates the debugging type symbol. */ | |
1529 | ||
1530 | switch (p[1]) | |
9ce5d3bb DE |
1531 | { |
1532 | case 'S': | |
1533 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1534 | data_sect_index); | |
1535 | ||
5e2b427d | 1536 | if (gdbarch_static_transform_name_p (gdbarch)) |
e81cff30 | 1537 | gdbarch_static_transform_name (gdbarch, namestring); |
9ce5d3bb | 1538 | |
04a679b8 | 1539 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1540 | VAR_DOMAIN, LOC_STATIC, |
1541 | &objfile->static_psymbols, | |
1762568f | 1542 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1543 | continue; |
131fe1bb | 1544 | |
9ce5d3bb DE |
1545 | case 'G': |
1546 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1547 | data_sect_index); | |
1548 | /* The addresses in these entries are reported to be | |
0963b4bd | 1549 | wrong. See the code that reads 'G's for symtabs. */ |
04a679b8 | 1550 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1551 | VAR_DOMAIN, LOC_STATIC, |
1552 | &objfile->global_psymbols, | |
1762568f | 1553 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1554 | continue; |
6a34fd2f | 1555 | |
9ce5d3bb DE |
1556 | case 'T': |
1557 | /* When a 'T' entry is defining an anonymous enum, it | |
1558 | may have a name which is the empty string, or a | |
1559 | single space. Since they're not really defining a | |
1560 | symbol, those shouldn't go in the partial symbol | |
1561 | table. We do pick up the elements of such enums at | |
1562 | 'check_enum:', below. */ | |
1563 | if (p >= namestring + 2 | |
1564 | || (p == namestring + 1 | |
1565 | && namestring[0] != ' ')) | |
1566 | { | |
04a679b8 | 1567 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1568 | STRUCT_DOMAIN, LOC_TYPEDEF, |
1569 | &objfile->static_psymbols, | |
1762568f | 1570 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1571 | if (p[2] == 't') |
1572 | { | |
1573 | /* Also a typedef with the same name. */ | |
04a679b8 | 1574 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1575 | VAR_DOMAIN, LOC_TYPEDEF, |
1576 | &objfile->static_psymbols, | |
1762568f | 1577 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1578 | p += 1; |
1579 | } | |
1580 | } | |
1581 | goto check_enum; | |
131fe1bb | 1582 | |
9ce5d3bb | 1583 | case 't': |
0963b4bd | 1584 | if (p != namestring) /* a name is there, not just :T... */ |
9ce5d3bb | 1585 | { |
04a679b8 | 1586 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1587 | VAR_DOMAIN, LOC_TYPEDEF, |
1588 | &objfile->static_psymbols, | |
1762568f | 1589 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1590 | } |
1591 | check_enum: | |
1592 | /* If this is an enumerated type, we need to | |
1593 | add all the enum constants to the partial symbol | |
1594 | table. This does not cover enums without names, e.g. | |
1595 | "enum {a, b} c;" in C, but fortunately those are | |
1596 | rare. There is no way for GDB to find those from the | |
1597 | enum type without spending too much time on it. Thus | |
1598 | to solve this problem, the compiler needs to put out the | |
1599 | enum in a nameless type. GCC2 does this. */ | |
1600 | ||
1601 | /* We are looking for something of the form | |
1602 | <name> ":" ("t" | "T") [<number> "="] "e" | |
1603 | {<constant> ":" <value> ","} ";". */ | |
1604 | ||
1605 | /* Skip over the colon and the 't' or 'T'. */ | |
1606 | p += 2; | |
1607 | /* This type may be given a number. Also, numbers can come | |
1608 | in pairs like (0,26). Skip over it. */ | |
1609 | while ((*p >= '0' && *p <= '9') | |
1610 | || *p == '(' || *p == ',' || *p == ')' | |
1611 | || *p == '=') | |
1612 | p++; | |
1613 | ||
1614 | if (*p++ == 'e') | |
1615 | { | |
1616 | /* The aix4 compiler emits extra crud before the members. */ | |
1617 | if (*p == '-') | |
1618 | { | |
1619 | /* Skip over the type (?). */ | |
1620 | while (*p != ':') | |
1621 | p++; | |
6a34fd2f | 1622 | |
9ce5d3bb | 1623 | /* Skip over the colon. */ |
6a34fd2f | 1624 | p++; |
9ce5d3bb | 1625 | } |
6a34fd2f | 1626 | |
9ce5d3bb DE |
1627 | /* We have found an enumerated type. */ |
1628 | /* According to comments in read_enum_type | |
1629 | a comma could end it instead of a semicolon. | |
1630 | I don't know where that happens. | |
1631 | Accept either. */ | |
1632 | while (*p && *p != ';' && *p != ',') | |
1633 | { | |
1634 | char *q; | |
1635 | ||
1636 | /* Check for and handle cretinous dbx symbol name | |
1637 | continuation! */ | |
1638 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
1639 | p = next_symbol_text (objfile); | |
1640 | ||
1641 | /* Point to the character after the name | |
1642 | of the enum constant. */ | |
1643 | for (q = p; *q && *q != ':'; q++) | |
1644 | ; | |
1645 | /* Note that the value doesn't matter for | |
1646 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 1647 | add_psymbol_to_list (p, q - p, 1, |
9ce5d3bb DE |
1648 | VAR_DOMAIN, LOC_CONST, |
1649 | &objfile->static_psymbols, 0, | |
1762568f | 1650 | psymtab_language, objfile); |
9ce5d3bb DE |
1651 | /* Point past the name. */ |
1652 | p = q; | |
1653 | /* Skip over the value. */ | |
1654 | while (*p && *p != ',') | |
1655 | p++; | |
1656 | /* Advance past the comma. */ | |
1657 | if (*p) | |
1658 | p++; | |
1659 | } | |
1660 | } | |
1661 | continue; | |
131fe1bb | 1662 | |
9ce5d3bb DE |
1663 | case 'c': |
1664 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 1665 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb | 1666 | VAR_DOMAIN, LOC_CONST, |
1762568f DE |
1667 | &objfile->static_psymbols, 0, |
1668 | psymtab_language, objfile); | |
9ce5d3bb | 1669 | continue; |
6a34fd2f | 1670 | |
9ce5d3bb DE |
1671 | case 'f': |
1672 | if (! pst) | |
1673 | { | |
1674 | int name_len = p - namestring; | |
224c3ddb | 1675 | char *name = (char *) xmalloc (name_len + 1); |
9a619af0 | 1676 | |
9ce5d3bb DE |
1677 | memcpy (name, namestring, name_len); |
1678 | name[name_len] = '\0'; | |
1679 | function_outside_compilation_unit_complaint (name); | |
1680 | xfree (name); | |
1681 | } | |
1682 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1683 | SECT_OFF_TEXT (objfile)); | |
0963b4bd | 1684 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1685 | last_function_name = namestring; |
1686 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1687 | value for the bottom of the text seg in those cases. */ |
9ce5d3bb DE |
1688 | if (nlist.n_value == ANOFFSET (objfile->section_offsets, |
1689 | SECT_OFF_TEXT (objfile)) | |
5e2b427d | 1690 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1691 | { |
1692 | CORE_ADDR minsym_valu = | |
1693 | find_stab_function_addr (namestring, | |
1694 | pst ? pst->filename : NULL, | |
1695 | objfile); | |
9a619af0 | 1696 | |
9ce5d3bb DE |
1697 | /* find_stab_function_addr will return 0 if the minimal |
1698 | symbol wasn't found. (Unfortunately, this might also | |
1699 | be a valid address.) Anyway, if it *does* return 0, | |
1700 | it is likely that the value was set correctly to begin | |
0963b4bd | 1701 | with... */ |
9ce5d3bb DE |
1702 | if (minsym_valu != 0) |
1703 | nlist.n_value = minsym_valu; | |
1704 | } | |
1705 | if (pst && textlow_not_set | |
5e2b427d | 1706 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1707 | { |
1708 | pst->textlow = nlist.n_value; | |
1709 | textlow_not_set = 0; | |
1710 | } | |
1711 | /* End kludge. */ | |
1712 | ||
1713 | /* Keep track of the start of the last function so we | |
1714 | can handle end of function symbols. */ | |
1715 | last_function_start = nlist.n_value; | |
1716 | ||
1717 | /* In reordered executables this function may lie outside | |
1718 | the bounds created by N_SO symbols. If that's the case | |
1719 | use the address of this function as the low bound for | |
1720 | the partial symbol table. */ | |
1721 | if (pst | |
1722 | && (textlow_not_set | |
1723 | || (nlist.n_value < pst->textlow | |
1724 | && (nlist.n_value | |
1725 | != ANOFFSET (objfile->section_offsets, | |
1726 | SECT_OFF_TEXT (objfile)))))) | |
1727 | { | |
1728 | pst->textlow = nlist.n_value; | |
1729 | textlow_not_set = 0; | |
1730 | } | |
04a679b8 | 1731 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1732 | VAR_DOMAIN, LOC_BLOCK, |
1733 | &objfile->static_psymbols, | |
1762568f | 1734 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1735 | continue; |
6a34fd2f | 1736 | |
9ce5d3bb DE |
1737 | /* Global functions were ignored here, but now they |
1738 | are put into the global psymtab like one would expect. | |
1739 | They're also in the minimal symbol table. */ | |
1740 | case 'F': | |
1741 | if (! pst) | |
1742 | { | |
1743 | int name_len = p - namestring; | |
224c3ddb | 1744 | char *name = (char *) xmalloc (name_len + 1); |
9a619af0 | 1745 | |
9ce5d3bb DE |
1746 | memcpy (name, namestring, name_len); |
1747 | name[name_len] = '\0'; | |
1748 | function_outside_compilation_unit_complaint (name); | |
1749 | xfree (name); | |
1750 | } | |
1751 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1752 | SECT_OFF_TEXT (objfile)); | |
0963b4bd | 1753 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1754 | last_function_name = namestring; |
1755 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1756 | value for the bottom of the text seg in those cases. */ |
9ce5d3bb DE |
1757 | if (nlist.n_value == ANOFFSET (objfile->section_offsets, |
1758 | SECT_OFF_TEXT (objfile)) | |
5e2b427d | 1759 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1760 | { |
1761 | CORE_ADDR minsym_valu = | |
1762 | find_stab_function_addr (namestring, | |
1763 | pst ? pst->filename : NULL, | |
1764 | objfile); | |
9a619af0 | 1765 | |
9ce5d3bb DE |
1766 | /* find_stab_function_addr will return 0 if the minimal |
1767 | symbol wasn't found. (Unfortunately, this might also | |
1768 | be a valid address.) Anyway, if it *does* return 0, | |
1769 | it is likely that the value was set correctly to begin | |
0963b4bd | 1770 | with... */ |
9ce5d3bb DE |
1771 | if (minsym_valu != 0) |
1772 | nlist.n_value = minsym_valu; | |
1773 | } | |
1774 | if (pst && textlow_not_set | |
5e2b427d | 1775 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1776 | { |
1777 | pst->textlow = nlist.n_value; | |
1778 | textlow_not_set = 0; | |
1779 | } | |
1780 | /* End kludge. */ | |
1781 | ||
1782 | /* Keep track of the start of the last function so we | |
1783 | can handle end of function symbols. */ | |
1784 | last_function_start = nlist.n_value; | |
1785 | ||
1786 | /* In reordered executables this function may lie outside | |
1787 | the bounds created by N_SO symbols. If that's the case | |
1788 | use the address of this function as the low bound for | |
1789 | the partial symbol table. */ | |
1790 | if (pst | |
1791 | && (textlow_not_set | |
1792 | || (nlist.n_value < pst->textlow | |
1793 | && (nlist.n_value | |
1794 | != ANOFFSET (objfile->section_offsets, | |
1795 | SECT_OFF_TEXT (objfile)))))) | |
1796 | { | |
1797 | pst->textlow = nlist.n_value; | |
1798 | textlow_not_set = 0; | |
1799 | } | |
04a679b8 | 1800 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1801 | VAR_DOMAIN, LOC_BLOCK, |
1802 | &objfile->global_psymbols, | |
1762568f | 1803 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1804 | continue; |
6a34fd2f | 1805 | |
9ce5d3bb DE |
1806 | /* Two things show up here (hopefully); static symbols of |
1807 | local scope (static used inside braces) or extensions | |
1808 | of structure symbols. We can ignore both. */ | |
1809 | case 'V': | |
1810 | case '(': | |
1811 | case '0': | |
1812 | case '1': | |
1813 | case '2': | |
1814 | case '3': | |
1815 | case '4': | |
1816 | case '5': | |
1817 | case '6': | |
1818 | case '7': | |
1819 | case '8': | |
1820 | case '9': | |
1821 | case '-': | |
0963b4bd | 1822 | case '#': /* For symbol identification (used in live ranges). */ |
9ce5d3bb | 1823 | continue; |
6a34fd2f | 1824 | |
9ce5d3bb DE |
1825 | case ':': |
1826 | /* It is a C++ nested symbol. We don't need to record it | |
1827 | (I don't think); if we try to look up foo::bar::baz, | |
1828 | then symbols for the symtab containing foo should get | |
1829 | read in, I think. */ | |
1830 | /* Someone says sun cc puts out symbols like | |
1831 | /foo/baz/maclib::/usr/local/bin/maclib, | |
1832 | which would get here with a symbol type of ':'. */ | |
1833 | continue; | |
6a34fd2f | 1834 | |
9ce5d3bb DE |
1835 | default: |
1836 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
1837 | of a continued stab can show up here. The question is | |
1838 | whether they ever can mimic a normal stab--it would be | |
1839 | nice if not, since we certainly don't want to spend the | |
1840 | time searching to the end of every string looking for | |
1841 | a backslash. */ | |
6a34fd2f | 1842 | |
3e43a32a MS |
1843 | complaint (&symfile_complaints, |
1844 | _("unknown symbol descriptor `%c'"), | |
9ce5d3bb DE |
1845 | p[1]); |
1846 | ||
1847 | /* Ignore it; perhaps it is an extension that we don't | |
1848 | know about. */ | |
1849 | continue; | |
1850 | } | |
131fe1bb | 1851 | } |
6a34fd2f | 1852 | |
9ce5d3bb | 1853 | case N_EXCL: |
6a34fd2f | 1854 | |
83b94be5 | 1855 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1856 | |
1857 | /* Find the corresponding bincl and mark that psymtab on the | |
0963b4bd | 1858 | psymtab dependency list. */ |
6a34fd2f EZ |
1859 | { |
1860 | struct partial_symtab *needed_pst = | |
1861 | find_corresponding_bincl_psymtab (namestring, nlist.n_value); | |
1862 | ||
1863 | /* If this include file was defined earlier in this file, | |
1864 | leave it alone. */ | |
1865 | if (needed_pst == pst) | |
1866 | continue; | |
1867 | ||
1868 | if (needed_pst) | |
1869 | { | |
1870 | int i; | |
1871 | int found = 0; | |
1872 | ||
1873 | for (i = 0; i < dependencies_used; i++) | |
1874 | if (dependency_list[i] == needed_pst) | |
1875 | { | |
1876 | found = 1; | |
1877 | break; | |
1878 | } | |
1879 | ||
1880 | /* If it's already in the list, skip the rest. */ | |
1881 | if (found) | |
1882 | continue; | |
1883 | ||
1884 | dependency_list[dependencies_used++] = needed_pst; | |
1885 | if (dependencies_used >= dependencies_allocated) | |
1886 | { | |
1887 | struct partial_symtab **orig = dependency_list; | |
9a619af0 | 1888 | |
6a34fd2f EZ |
1889 | dependency_list = |
1890 | (struct partial_symtab **) | |
1891 | alloca ((dependencies_allocated *= 2) | |
1892 | * sizeof (struct partial_symtab *)); | |
4efb68b1 | 1893 | memcpy (dependency_list, orig, |
6a34fd2f EZ |
1894 | (dependencies_used |
1895 | * sizeof (struct partial_symtab *))); | |
1896 | #ifdef DEBUG_INFO | |
063e58ba | 1897 | fprintf_unfiltered (gdb_stderr, |
3e43a32a MS |
1898 | "Had to reallocate " |
1899 | "dependency list.\n"); | |
063e58ba MD |
1900 | fprintf_unfiltered (gdb_stderr, |
1901 | "New dependencies allocated: %d\n", | |
6a34fd2f EZ |
1902 | dependencies_allocated); |
1903 | #endif | |
1904 | } | |
1905 | } | |
1906 | } | |
1907 | continue; | |
1908 | ||
9ce5d3bb | 1909 | case N_ENDM: |
6a34fd2f | 1910 | /* Solaris 2 end of module, finish current partial symbol table. |
8763cede | 1911 | dbx_end_psymtab will set pst->texthigh to the proper value, which |
6a34fd2f EZ |
1912 | is necessary if a module compiled without debugging info |
1913 | follows this module. */ | |
5e2b427d | 1914 | if (pst && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1915 | { |
8763cede DE |
1916 | dbx_end_psymtab (objfile, pst, |
1917 | psymtab_include_list, includes_used, | |
1918 | symnum * symbol_size, | |
1919 | (CORE_ADDR) 0, dependency_list, | |
1920 | dependencies_used, textlow_not_set); | |
9ce5d3bb DE |
1921 | pst = (struct partial_symtab *) 0; |
1922 | includes_used = 0; | |
1923 | dependencies_used = 0; | |
578933ab | 1924 | has_line_numbers = 0; |
9ce5d3bb | 1925 | } |
6a34fd2f | 1926 | continue; |
c906108c | 1927 | |
9ce5d3bb | 1928 | case N_RBRAC: |
6a34fd2f EZ |
1929 | #ifdef HANDLE_RBRAC |
1930 | HANDLE_RBRAC (nlist.n_value); | |
1931 | continue; | |
1932 | #endif | |
9ce5d3bb DE |
1933 | case N_EINCL: |
1934 | case N_DSLINE: | |
1935 | case N_BSLINE: | |
1936 | case N_SSYM: /* Claim: Structure or union element. | |
063e58ba | 1937 | Hopefully, I can ignore this. */ |
0963b4bd | 1938 | case N_ENTRY: /* Alternate entry point; can ignore. */ |
9ce5d3bb DE |
1939 | case N_MAIN: /* Can definitely ignore this. */ |
1940 | case N_CATCH: /* These are GNU C++ extensions */ | |
0963b4bd | 1941 | case N_EHDECL: /* that can safely be ignored here. */ |
9ce5d3bb DE |
1942 | case N_LENG: |
1943 | case N_BCOMM: | |
1944 | case N_ECOMM: | |
1945 | case N_ECOML: | |
1946 | case N_FNAME: | |
1947 | case N_SLINE: | |
1948 | case N_RSYM: | |
1949 | case N_PSYM: | |
ec48dc8b PM |
1950 | case N_BNSYM: |
1951 | case N_ENSYM: | |
9ce5d3bb DE |
1952 | case N_LBRAC: |
1953 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
1954 | case N_DEFD: /* GNU Modula-2 */ | |
1955 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
1956 | ||
0963b4bd | 1957 | case N_OBJ: /* Useless types from Solaris. */ |
9ce5d3bb DE |
1958 | case N_OPT: |
1959 | case N_PATCH: | |
0963b4bd | 1960 | /* These symbols aren't interesting; don't worry about them. */ |
6a34fd2f EZ |
1961 | continue; |
1962 | ||
9ce5d3bb | 1963 | default: |
6a34fd2f EZ |
1964 | /* If we haven't found it yet, ignore it. It's probably some |
1965 | new type we don't know about yet. */ | |
bb599908 | 1966 | unknown_symtype_complaint (hex_string (nlist.n_type)); |
6a34fd2f EZ |
1967 | continue; |
1968 | } | |
c906108c SS |
1969 | } |
1970 | ||
1971 | /* If there's stuff to be cleaned up, clean it up. */ | |
c906108c SS |
1972 | if (pst) |
1973 | { | |
1974 | /* Don't set pst->texthigh lower than it already is. */ | |
1975 | CORE_ADDR text_end = | |
6a34fd2f | 1976 | (lowest_text_address == (CORE_ADDR) -1 |
063e58ba MD |
1977 | ? (text_addr + ANOFFSET (objfile->section_offsets, |
1978 | SECT_OFF_TEXT (objfile))) | |
6a34fd2f EZ |
1979 | : lowest_text_address) |
1980 | + text_size; | |
c906108c | 1981 | |
8763cede DE |
1982 | dbx_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
1983 | symnum * symbol_size, | |
1984 | text_end > pst->texthigh ? text_end : pst->texthigh, | |
1985 | dependency_list, dependencies_used, textlow_not_set); | |
c906108c SS |
1986 | } |
1987 | ||
1988 | do_cleanups (back_to); | |
1989 | } | |
1990 | ||
1991 | /* Allocate and partially fill a partial symtab. It will be | |
1992 | completely filled at the end of the symbol list. | |
1993 | ||
1994 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1995 | is the address relative to which its symbols are (incremental) or 0 | |
0963b4bd | 1996 | (normal). */ |
c906108c | 1997 | |
d4f3574e | 1998 | static struct partial_symtab * |
fba45db2 KB |
1999 | start_psymtab (struct objfile *objfile, char *filename, CORE_ADDR textlow, |
2000 | int ldsymoff, struct partial_symbol **global_syms, | |
2001 | struct partial_symbol **static_syms) | |
c906108c SS |
2002 | { |
2003 | struct partial_symtab *result = | |
18a94d75 DE |
2004 | start_psymtab_common (objfile, filename, textlow, |
2005 | global_syms, static_syms); | |
c906108c | 2006 | |
8d749320 SM |
2007 | result->read_symtab_private = |
2008 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 2009 | LDSYMOFF (result) = ldsymoff; |
257e7a09 | 2010 | result->read_symtab = dbx_read_symtab; |
c5aa993b JM |
2011 | SYMBOL_SIZE (result) = symbol_size; |
2012 | SYMBOL_OFFSET (result) = symbol_table_offset; | |
2013 | STRING_OFFSET (result) = string_table_offset; | |
2014 | FILE_STRING_OFFSET (result) = file_string_table_offset; | |
c906108c | 2015 | |
0963b4bd | 2016 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
2017 | psymtab_language = deduce_language_from_filename (filename); |
2018 | ||
2019 | return result; | |
2020 | } | |
2021 | ||
0963b4bd | 2022 | /* Close off the current usage of PST. |
c906108c SS |
2023 | Returns PST or NULL if the partial symtab was empty and thrown away. |
2024 | ||
2025 | FIXME: List variables and peculiarities of same. */ | |
2026 | ||
2027 | struct partial_symtab * | |
8763cede DE |
2028 | dbx_end_psymtab (struct objfile *objfile, struct partial_symtab *pst, |
2029 | const char **include_list, int num_includes, | |
2030 | int capping_symbol_offset, CORE_ADDR capping_text, | |
2031 | struct partial_symtab **dependency_list, | |
2032 | int number_dependencies, | |
2033 | int textlow_not_set) | |
c906108c SS |
2034 | { |
2035 | int i; | |
5e2b427d | 2036 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
2037 | |
2038 | if (capping_symbol_offset != -1) | |
c5aa993b | 2039 | LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst); |
5afc051b | 2040 | pst->texthigh = capping_text; |
c906108c | 2041 | |
c906108c SS |
2042 | /* Under Solaris, the N_SO symbols always have a value of 0, |
2043 | instead of the usual address of the .o file. Therefore, | |
2044 | we have to do some tricks to fill in texthigh and textlow. | |
6a34fd2f | 2045 | The first trick is: if we see a static |
c906108c SS |
2046 | or global function, and the textlow for the current pst |
2047 | is not set (ie: textlow_not_set), then we use that function's | |
2048 | address for the textlow of the pst. */ | |
2049 | ||
2050 | /* Now, to fill in texthigh, we remember the last function seen | |
6a34fd2f | 2051 | in the .o file. Also, there's a hack in |
c906108c SS |
2052 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field |
2053 | to here via the misc_info field. Therefore, we can fill in | |
2054 | a reliable texthigh by taking the address plus size of the | |
2055 | last function in the file. */ | |
2056 | ||
203c3895 | 2057 | if (pst->texthigh == 0 && last_function_name |
5e2b427d | 2058 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
c906108c SS |
2059 | { |
2060 | char *p; | |
2061 | int n; | |
3b7344d5 | 2062 | struct bound_minimal_symbol minsym; |
c906108c SS |
2063 | |
2064 | p = strchr (last_function_name, ':'); | |
2065 | if (p == NULL) | |
2066 | p = last_function_name; | |
2067 | n = p - last_function_name; | |
224c3ddb | 2068 | p = (char *) alloca (n + 2); |
c906108c SS |
2069 | strncpy (p, last_function_name, n); |
2070 | p[n] = 0; | |
c5aa993b | 2071 | |
c906108c | 2072 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
3b7344d5 | 2073 | if (minsym.minsym == NULL) |
c906108c SS |
2074 | { |
2075 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
2076 | try again with an appended underscore if the minimal symbol | |
2077 | was not found. */ | |
2078 | p[n] = '_'; | |
2079 | p[n + 1] = 0; | |
2080 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); | |
2081 | } | |
2082 | ||
3b7344d5 | 2083 | if (minsym.minsym) |
77e371c0 | 2084 | pst->texthigh = (BMSYMBOL_VALUE_ADDRESS (minsym) |
3b7344d5 | 2085 | + MSYMBOL_SIZE (minsym.minsym)); |
c906108c SS |
2086 | |
2087 | last_function_name = NULL; | |
2088 | } | |
2089 | ||
5e2b427d | 2090 | if (!gdbarch_sofun_address_maybe_missing (gdbarch)) |
203c3895 | 2091 | ; |
0963b4bd | 2092 | /* This test will be true if the last .o file is only data. */ |
203c3895 | 2093 | else if (textlow_not_set) |
5afc051b | 2094 | pst->textlow = pst->texthigh; |
c906108c SS |
2095 | else |
2096 | { | |
2097 | struct partial_symtab *p1; | |
2098 | ||
2099 | /* If we know our own starting text address, then walk through all other | |
c5aa993b JM |
2100 | psymtabs for this objfile, and if any didn't know their ending text |
2101 | address, set it to our starting address. Take care to not set our | |
2102 | own ending address to our starting address, nor to set addresses on | |
2103 | `dependency' files that have both textlow and texthigh zero. */ | |
c906108c SS |
2104 | |
2105 | ALL_OBJFILE_PSYMTABS (objfile, p1) | |
c5aa993b | 2106 | { |
5afc051b | 2107 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) |
c5aa993b | 2108 | { |
5afc051b | 2109 | p1->texthigh = pst->textlow; |
0963b4bd MS |
2110 | /* If this file has only data, then make textlow match |
2111 | texthigh. */ | |
5afc051b JB |
2112 | if (p1->textlow == 0) |
2113 | p1->textlow = p1->texthigh; | |
c5aa993b JM |
2114 | } |
2115 | } | |
c906108c SS |
2116 | } |
2117 | ||
2118 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
c906108c | 2119 | |
8763cede | 2120 | end_psymtab_common (objfile, pst); |
c906108c SS |
2121 | |
2122 | pst->number_of_dependencies = number_dependencies; | |
2123 | if (number_dependencies) | |
2124 | { | |
8d749320 SM |
2125 | pst->dependencies = XOBNEWVEC (&objfile->objfile_obstack, |
2126 | struct partial_symtab *, | |
2127 | number_dependencies); | |
c906108c | 2128 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2129 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2130 | } |
2131 | else | |
2132 | pst->dependencies = 0; | |
2133 | ||
2134 | for (i = 0; i < num_includes; i++) | |
2135 | { | |
2136 | struct partial_symtab *subpst = | |
9a619af0 | 2137 | allocate_psymtab (include_list[i], objfile); |
c906108c | 2138 | |
c906108c | 2139 | subpst->read_symtab_private = |
8d749320 | 2140 | XOBNEW (&objfile->objfile_obstack, struct symloc); |
c5aa993b JM |
2141 | LDSYMOFF (subpst) = |
2142 | LDSYMLEN (subpst) = | |
5afc051b JB |
2143 | subpst->textlow = |
2144 | subpst->texthigh = 0; | |
c906108c SS |
2145 | |
2146 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2147 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 SM |
2148 | subpst->dependencies = |
2149 | XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
c906108c SS |
2150 | subpst->dependencies[0] = pst; |
2151 | subpst->number_of_dependencies = 1; | |
2152 | ||
2153 | subpst->globals_offset = | |
2154 | subpst->n_global_syms = | |
c5aa993b JM |
2155 | subpst->statics_offset = |
2156 | subpst->n_static_syms = 0; | |
c906108c SS |
2157 | |
2158 | subpst->readin = 0; | |
43f3e411 | 2159 | subpst->compunit_symtab = 0; |
c906108c SS |
2160 | subpst->read_symtab = pst->read_symtab; |
2161 | } | |
2162 | ||
c906108c SS |
2163 | if (num_includes == 0 |
2164 | && number_dependencies == 0 | |
2165 | && pst->n_global_syms == 0 | |
2166 | && pst->n_static_syms == 0 | |
2167 | && has_line_numbers == 0) | |
2168 | { | |
2169 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2170 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2171 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b JM |
2172 | any symbols in them. There can be a lot of them. But this check |
2173 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
2174 | is not empty, but we don't realize that. Fixing that without slowing | |
2175 | things down might be tricky. */ | |
c906108c | 2176 | |
5c80ed9d | 2177 | discard_psymtab (objfile, pst); |
c906108c SS |
2178 | |
2179 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2180 | pst = NULL; |
c906108c SS |
2181 | } |
2182 | return pst; | |
2183 | } | |
2184 | \f | |
2185 | static void | |
5c80ed9d | 2186 | dbx_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst) |
c906108c SS |
2187 | { |
2188 | struct cleanup *old_chain; | |
2189 | int i; | |
c5aa993b | 2190 | |
c906108c SS |
2191 | if (pst->readin) |
2192 | { | |
0963b4bd MS |
2193 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. " |
2194 | "Shouldn't happen.\n", | |
c5aa993b | 2195 | pst->filename); |
c906108c SS |
2196 | return; |
2197 | } | |
2198 | ||
0963b4bd | 2199 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
2200 | for (i = 0; i < pst->number_of_dependencies; i++) |
2201 | if (!pst->dependencies[i]->readin) | |
2202 | { | |
2203 | /* Inform about additional files that need to be read in. */ | |
2204 | if (info_verbose) | |
2205 | { | |
2206 | fputs_filtered (" ", gdb_stdout); | |
2207 | wrap_here (""); | |
2208 | fputs_filtered ("and ", gdb_stdout); | |
2209 | wrap_here (""); | |
2210 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 2211 | wrap_here (""); /* Flush output. */ |
c906108c SS |
2212 | gdb_flush (gdb_stdout); |
2213 | } | |
5c80ed9d | 2214 | dbx_psymtab_to_symtab_1 (objfile, pst->dependencies[i]); |
c906108c SS |
2215 | } |
2216 | ||
0963b4bd | 2217 | if (LDSYMLEN (pst)) /* Otherwise it's a dummy. */ |
c906108c SS |
2218 | { |
2219 | /* Init stuff necessary for reading in symbols */ | |
2220 | stabsread_init (); | |
2221 | buildsym_init (); | |
a0b3c4fd | 2222 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c SS |
2223 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
2224 | symbol_size = SYMBOL_SIZE (pst); | |
2225 | ||
0963b4bd | 2226 | /* Read in this file's symbols. */ |
5c80ed9d TT |
2227 | bfd_seek (objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); |
2228 | read_ofile_symtab (objfile, pst); | |
c906108c SS |
2229 | |
2230 | do_cleanups (old_chain); | |
2231 | } | |
2232 | ||
2233 | pst->readin = 1; | |
2234 | } | |
2235 | ||
2236 | /* Read in all of the symbols for a given psymtab for real. | |
257e7a09 | 2237 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
2238 | |
2239 | static void | |
257e7a09 | 2240 | dbx_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 2241 | { |
257e7a09 | 2242 | if (self->readin) |
c906108c | 2243 | { |
0963b4bd MS |
2244 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. " |
2245 | "Shouldn't happen.\n", | |
257e7a09 | 2246 | self->filename); |
c906108c SS |
2247 | return; |
2248 | } | |
2249 | ||
257e7a09 | 2250 | if (LDSYMLEN (self) || self->number_of_dependencies) |
c906108c | 2251 | { |
57cee33a TT |
2252 | struct cleanup *back_to; |
2253 | ||
c906108c | 2254 | /* Print the message now, before reading the string table, |
c5aa993b | 2255 | to avoid disconcerting pauses. */ |
c906108c SS |
2256 | if (info_verbose) |
2257 | { | |
257e7a09 | 2258 | printf_filtered ("Reading in symbols for %s...", self->filename); |
c906108c SS |
2259 | gdb_flush (gdb_stdout); |
2260 | } | |
2261 | ||
c906108c SS |
2262 | next_symbol_text_func = dbx_next_symbol_text; |
2263 | ||
57cee33a TT |
2264 | back_to = make_cleanup (null_cleanup, NULL); |
2265 | ||
5c80ed9d | 2266 | if (DBX_STAB_SECTION (objfile)) |
086df311 DJ |
2267 | { |
2268 | stabs_data | |
5c80ed9d TT |
2269 | = symfile_relocate_debug_section (objfile, |
2270 | DBX_STAB_SECTION (objfile), | |
086df311 | 2271 | NULL); |
9a619af0 | 2272 | |
086df311 | 2273 | if (stabs_data) |
57cee33a | 2274 | make_cleanup (free_current_contents, (void *) &stabs_data); |
086df311 DJ |
2275 | } |
2276 | ||
257e7a09 | 2277 | dbx_psymtab_to_symtab_1 (objfile, self); |
c906108c | 2278 | |
57cee33a | 2279 | do_cleanups (back_to); |
086df311 | 2280 | |
c906108c SS |
2281 | /* Match with global symbols. This only needs to be done once, |
2282 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 2283 | scan_file_globals (objfile); |
c906108c SS |
2284 | |
2285 | /* Finish up the debug error message. */ | |
2286 | if (info_verbose) | |
2287 | printf_filtered ("done.\n"); | |
2288 | } | |
2289 | } | |
2290 | ||
0963b4bd | 2291 | /* Read in a defined section of a specific object file's symbols. */ |
c5aa993b | 2292 | |
c906108c | 2293 | static void |
5c80ed9d | 2294 | read_ofile_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 2295 | { |
52f0bd74 AC |
2296 | char *namestring; |
2297 | struct external_nlist *bufp; | |
c906108c SS |
2298 | struct internal_nlist nlist; |
2299 | unsigned char type; | |
2300 | unsigned max_symnum; | |
52f0bd74 | 2301 | bfd *abfd; |
c906108c SS |
2302 | int sym_offset; /* Offset to start of symbols to read */ |
2303 | int sym_size; /* Size of symbols to read */ | |
2304 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
2305 | int text_size; /* Size of text segment for symbols */ | |
2306 | struct section_offsets *section_offsets; | |
2307 | ||
c5aa993b JM |
2308 | sym_offset = LDSYMOFF (pst); |
2309 | sym_size = LDSYMLEN (pst); | |
5afc051b JB |
2310 | text_offset = pst->textlow; |
2311 | text_size = pst->texthigh - pst->textlow; | |
18a94d75 | 2312 | section_offsets = objfile->section_offsets; |
c906108c | 2313 | |
dd707e8e | 2314 | dbxread_objfile = objfile; |
c906108c SS |
2315 | |
2316 | stringtab_global = DBX_STRINGTAB (objfile); | |
46212e0b | 2317 | set_last_source_file (NULL); |
c906108c SS |
2318 | |
2319 | abfd = objfile->obfd; | |
0963b4bd | 2320 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol. */ |
c906108c | 2321 | symbuf_end = symbuf_idx = 0; |
086df311 DJ |
2322 | symbuf_read = 0; |
2323 | symbuf_left = sym_offset + sym_size; | |
c906108c SS |
2324 | |
2325 | /* It is necessary to actually read one symbol *before* the start | |
2326 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
2327 | occurs before the N_SO symbol. | |
2328 | ||
2329 | Detecting this in read_dbx_symtab | |
2330 | would slow down initial readin, so we look for it here instead. */ | |
c5aa993b | 2331 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c | 2332 | { |
086df311 | 2333 | stabs_seek (sym_offset - symbol_size); |
c906108c SS |
2334 | fill_symbuf (abfd); |
2335 | bufp = &symbuf[symbuf_idx++]; | |
2336 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2337 | OBJSTAT (objfile, n_stabs++); | |
2338 | ||
83b94be5 | 2339 | namestring = set_namestring (objfile, &nlist); |
c906108c SS |
2340 | |
2341 | processing_gcc_compilation = 0; | |
2342 | if (nlist.n_type == N_TEXT) | |
2343 | { | |
2344 | const char *tempstring = namestring; | |
2345 | ||
91f54576 | 2346 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2347 | processing_gcc_compilation = 1; |
91f54576 | 2348 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2349 | processing_gcc_compilation = 2; |
2350 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) | |
2351 | ++tempstring; | |
61012eef | 2352 | if (startswith (tempstring, "__gnu_compiled")) |
c906108c SS |
2353 | processing_gcc_compilation = 2; |
2354 | } | |
c906108c SS |
2355 | } |
2356 | else | |
2357 | { | |
2358 | /* The N_SO starting this symtab is the first symbol, so we | |
c5aa993b JM |
2359 | better not check the symbol before it. I'm not this can |
2360 | happen, but it doesn't hurt to check for it. */ | |
086df311 | 2361 | stabs_seek (sym_offset); |
c906108c SS |
2362 | processing_gcc_compilation = 0; |
2363 | } | |
2364 | ||
2365 | if (symbuf_idx == symbuf_end) | |
2366 | fill_symbuf (abfd); | |
2367 | bufp = &symbuf[symbuf_idx]; | |
2368 | if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO) | |
8a3fe4f8 | 2369 | error (_("First symbol in segment of executable not a source symbol")); |
c906108c SS |
2370 | |
2371 | max_symnum = sym_size / symbol_size; | |
2372 | ||
2373 | for (symnum = 0; | |
2374 | symnum < max_symnum; | |
2375 | symnum++) | |
2376 | { | |
0963b4bd | 2377 | QUIT; /* Allow this to be interruptable. */ |
c906108c | 2378 | if (symbuf_idx == symbuf_end) |
c5aa993b | 2379 | fill_symbuf (abfd); |
c906108c SS |
2380 | bufp = &symbuf[symbuf_idx++]; |
2381 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2382 | OBJSTAT (objfile, n_stabs++); | |
2383 | ||
2384 | type = bfd_h_get_8 (abfd, bufp->e_type); | |
2385 | ||
83b94be5 | 2386 | namestring = set_namestring (objfile, &nlist); |
c906108c | 2387 | |
c5aa993b JM |
2388 | if (type & N_STAB) |
2389 | { | |
7b1f21e5 PP |
2390 | if (sizeof (nlist.n_value) > 4 |
2391 | /* We are a 64-bit debugger debugging a 32-bit program. */ | |
2392 | && (type == N_LSYM || type == N_PSYM)) | |
2393 | /* We have to be careful with the n_value in the case of N_LSYM | |
2394 | and N_PSYM entries, because they are signed offsets from frame | |
2395 | pointer, but we actually read them as unsigned 32-bit values. | |
2396 | This is not a problem for 32-bit debuggers, for which negative | |
2397 | values end up being interpreted correctly (as negative | |
2398 | offsets) due to integer overflow. | |
2399 | But we need to sign-extend the value for 64-bit debuggers, | |
2400 | or we'll end up interpreting negative values as very large | |
2401 | positive offsets. */ | |
2402 | nlist.n_value = (nlist.n_value ^ 0x80000000) - 0x80000000; | |
c906108c SS |
2403 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
2404 | namestring, section_offsets, objfile); | |
c5aa993b | 2405 | } |
c906108c | 2406 | /* We skip checking for a new .o or -l file; that should never |
0963b4bd | 2407 | happen in this routine. */ |
c906108c SS |
2408 | else if (type == N_TEXT) |
2409 | { | |
2410 | /* I don't think this code will ever be executed, because | |
2411 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
2412 | the N_SO symbol which starts this source file. | |
2413 | However, there is no reason not to accept | |
2414 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
2415 | ||
91f54576 | 2416 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2417 | processing_gcc_compilation = 1; |
91f54576 | 2418 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2419 | processing_gcc_compilation = 2; |
c906108c | 2420 | } |
c5aa993b | 2421 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
9a619af0 | 2422 | || type == (unsigned char) N_NBTEXT) |
c5aa993b | 2423 | { |
c906108c SS |
2424 | /* Global symbol: see if we came across a dbx defintion for |
2425 | a corresponding symbol. If so, store the value. Remove | |
2426 | syms from the chain when their values are stored, but | |
2427 | search the whole chain, as there may be several syms from | |
0963b4bd | 2428 | different files with the same name. */ |
c906108c SS |
2429 | /* This is probably not true. Since the files will be read |
2430 | in one at a time, each reference to a global symbol will | |
0963b4bd MS |
2431 | be satisfied in each file as it appears. So we skip this |
2432 | section. */ | |
c906108c | 2433 | ; |
c5aa993b | 2434 | } |
c906108c SS |
2435 | } |
2436 | ||
c906108c SS |
2437 | /* In a Solaris elf file, this variable, which comes from the |
2438 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
0963b4bd | 2439 | which comes from pst->textlow is correct. */ |
c906108c SS |
2440 | if (last_source_start_addr == 0) |
2441 | last_source_start_addr = text_offset; | |
2442 | ||
2443 | /* In reordered executables last_source_start_addr may not be the | |
2444 | lower bound for this symtab, instead use text_offset which comes | |
5afc051b | 2445 | from pst->textlow which is correct. */ |
c906108c SS |
2446 | if (last_source_start_addr > text_offset) |
2447 | last_source_start_addr = text_offset; | |
2448 | ||
43f3e411 DE |
2449 | pst->compunit_symtab = end_symtab (text_offset + text_size, |
2450 | SECT_OFF_TEXT (objfile)); | |
c906108c | 2451 | |
c906108c | 2452 | end_stabs (); |
e9112110 | 2453 | |
dd707e8e | 2454 | dbxread_objfile = NULL; |
c906108c | 2455 | } |
c906108c | 2456 | \f |
c5aa993b | 2457 | |
195a3f6c TT |
2458 | /* Record the namespace that the function defined by SYMBOL was |
2459 | defined in, if necessary. BLOCK is the associated block; use | |
2460 | OBSTACK for allocation. */ | |
2461 | ||
2462 | static void | |
2463 | cp_set_block_scope (const struct symbol *symbol, | |
2464 | struct block *block, | |
2465 | struct obstack *obstack) | |
2466 | { | |
2467 | if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) | |
2468 | { | |
2469 | /* Try to figure out the appropriate namespace from the | |
2470 | demangled name. */ | |
2471 | ||
2472 | /* FIXME: carlton/2003-04-15: If the function in question is | |
2473 | a method of a class, the name will actually include the | |
2474 | name of the class as well. This should be harmless, but | |
2475 | is a little unfortunate. */ | |
2476 | ||
2477 | const char *name = SYMBOL_DEMANGLED_NAME (symbol); | |
2478 | unsigned int prefix_len = cp_entire_prefix_len (name); | |
2479 | ||
2480 | block_set_scope (block, | |
224c3ddb | 2481 | (const char *) obstack_copy0 (obstack, name, prefix_len), |
195a3f6c TT |
2482 | obstack); |
2483 | } | |
2484 | } | |
2485 | ||
c906108c SS |
2486 | /* This handles a single symbol from the symbol-file, building symbols |
2487 | into a GDB symtab. It takes these arguments and an implicit argument. | |
2488 | ||
2489 | TYPE is the type field of the ".stab" symbol entry. | |
2490 | DESC is the desc field of the ".stab" entry. | |
2491 | VALU is the value field of the ".stab" entry. | |
2492 | NAME is the symbol name, in our address space. | |
e31272c3 MK |
2493 | SECTION_OFFSETS is a set of amounts by which the sections of this |
2494 | object file were relocated when it was loaded into memory. Note | |
2495 | that these section_offsets are not the objfile->section_offsets but | |
2496 | the pst->section_offsets. All symbols that refer to memory | |
2497 | locations need to be offset by these amounts. | |
2498 | OBJFILE is the object file from which we are reading symbols. It | |
2499 | is used in end_symtab. */ | |
c906108c SS |
2500 | |
2501 | void | |
fba45db2 | 2502 | process_one_symbol (int type, int desc, CORE_ADDR valu, char *name, |
3189cb12 | 2503 | const struct section_offsets *section_offsets, |
fba45db2 | 2504 | struct objfile *objfile) |
c906108c | 2505 | { |
5e2b427d | 2506 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 2507 | struct context_stack *newobj; |
e31272c3 MK |
2508 | /* This remembers the address of the start of a function. It is |
2509 | used because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries | |
2510 | are relative to the current function's start address. On systems | |
2511 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, | |
2512 | and is used to relocate these symbol types rather than | |
2513 | SECTION_OFFSETS. */ | |
c906108c SS |
2514 | static CORE_ADDR function_start_offset; |
2515 | ||
e31272c3 MK |
2516 | /* This holds the address of the start of a function, without the |
2517 | system peculiarities of function_start_offset. */ | |
a1b9830c DJ |
2518 | static CORE_ADDR last_function_start; |
2519 | ||
54c7009d EZ |
2520 | /* If this is nonzero, we've seen an N_SLINE since the start of the |
2521 | current function. We use this to tell us to move the first sline | |
2522 | to the beginning of the function regardless of what its given | |
0963b4bd | 2523 | value is. */ |
a1b9830c DJ |
2524 | static int sline_found_in_function = 1; |
2525 | ||
e31272c3 MK |
2526 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this |
2527 | source file. Used to detect the SunPRO solaris compiler. */ | |
c906108c SS |
2528 | static int n_opt_found; |
2529 | ||
e31272c3 MK |
2530 | /* Something is wrong if we see real data before seeing a source |
2531 | file name. */ | |
c906108c | 2532 | |
46212e0b | 2533 | if (get_last_source_file () == NULL && type != (unsigned char) N_SO) |
c906108c SS |
2534 | { |
2535 | /* Ignore any symbols which appear before an N_SO symbol. | |
c5aa993b JM |
2536 | Currently no one puts symbols there, but we should deal |
2537 | gracefully with the case. A complain()t might be in order, | |
2538 | but this should not be an error (). */ | |
c906108c SS |
2539 | return; |
2540 | } | |
2541 | ||
2542 | switch (type) | |
2543 | { | |
2544 | case N_FUN: | |
2545 | case N_FNAME: | |
2546 | ||
2547 | if (*name == '\000') | |
2548 | { | |
e31272c3 MK |
2549 | /* This N_FUN marks the end of a function. This closes off |
2550 | the current block. */ | |
df8a16a1 | 2551 | struct block *block; |
0c5e171a KD |
2552 | |
2553 | if (context_stack_depth <= 0) | |
2554 | { | |
23136709 | 2555 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2556 | break; |
2557 | } | |
2558 | ||
6b37567a JJ |
2559 | /* The following check is added before recording line 0 at |
2560 | end of function so as to handle hand-generated stabs | |
e31272c3 MK |
2561 | which may have an N_FUN stabs at the end of the function, |
2562 | but no N_SLINE stabs. */ | |
6b37567a | 2563 | if (sline_found_in_function) |
fbf65064 UW |
2564 | { |
2565 | CORE_ADDR addr = last_function_start + valu; | |
9a619af0 | 2566 | |
fbf65064 UW |
2567 | record_line (current_subfile, 0, |
2568 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
2569 | } | |
6b37567a | 2570 | |
c906108c | 2571 | within_function = 0; |
fe978cb0 | 2572 | newobj = pop_context (); |
c906108c SS |
2573 | |
2574 | /* Make a block for the local symbols within. */ | |
fe978cb0 | 2575 | block = finish_block (newobj->name, &local_symbols, |
63e43d3a | 2576 | newobj->old_blocks, NULL, |
fe978cb0 | 2577 | newobj->start_addr, newobj->start_addr + valu); |
df8a16a1 DJ |
2578 | |
2579 | /* For C++, set the block's scope. */ | |
fe978cb0 PA |
2580 | if (SYMBOL_LANGUAGE (newobj->name) == language_cplus) |
2581 | cp_set_block_scope (newobj->name, block, &objfile->objfile_obstack); | |
c906108c SS |
2582 | |
2583 | /* May be switching to an assembler file which may not be using | |
2584 | block relative stabs, so reset the offset. */ | |
1736a7bd | 2585 | function_start_offset = 0; |
c906108c SS |
2586 | |
2587 | break; | |
2588 | } | |
2589 | ||
a1b9830c DJ |
2590 | sline_found_in_function = 0; |
2591 | ||
e31272c3 | 2592 | /* Relocate for dynamic loading. */ |
b8fbeb18 | 2593 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
85ddcc70 | 2594 | valu = gdbarch_addr_bits_remove (gdbarch, valu); |
a1b9830c DJ |
2595 | last_function_start = valu; |
2596 | ||
c906108c SS |
2597 | goto define_a_symbol; |
2598 | ||
2599 | case N_LBRAC: | |
2600 | /* This "symbol" just indicates the start of an inner lexical | |
c5aa993b | 2601 | context within a function. */ |
c906108c SS |
2602 | |
2603 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2604 | if (n_opt_found && desc == 1) | |
2605 | break; | |
2606 | ||
1736a7bd | 2607 | valu += function_start_offset; |
c906108c | 2608 | |
ab8b8aca | 2609 | push_context (desc, valu); |
c906108c SS |
2610 | break; |
2611 | ||
2612 | case N_RBRAC: | |
2613 | /* This "symbol" just indicates the end of an inner lexical | |
c5aa993b | 2614 | context that was started with N_LBRAC. */ |
c906108c SS |
2615 | |
2616 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2617 | if (n_opt_found && desc == 1) | |
2618 | break; | |
2619 | ||
1736a7bd | 2620 | valu += function_start_offset; |
c906108c | 2621 | |
0c5e171a KD |
2622 | if (context_stack_depth <= 0) |
2623 | { | |
23136709 | 2624 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2625 | break; |
2626 | } | |
2627 | ||
fe978cb0 PA |
2628 | newobj = pop_context (); |
2629 | if (desc != newobj->depth) | |
23136709 | 2630 | lbrac_mismatch_complaint (symnum); |
c906108c | 2631 | |
35156bae | 2632 | if (local_symbols != NULL) |
1f077a3e | 2633 | { |
35156bae DJ |
2634 | /* GCC development snapshots from March to December of |
2635 | 2000 would output N_LSYM entries after N_LBRAC | |
2636 | entries. As a consequence, these symbols are simply | |
2637 | discarded. Complain if this is the case. */ | |
3e43a32a MS |
2638 | complaint (&symfile_complaints, |
2639 | _("misplaced N_LBRAC entry; discarding local " | |
2640 | "symbols which have no enclosing block")); | |
1f077a3e | 2641 | } |
fe978cb0 | 2642 | local_symbols = newobj->locals; |
c906108c | 2643 | |
35156bae | 2644 | if (context_stack_depth > 1) |
c906108c | 2645 | { |
e31272c3 MK |
2646 | /* This is not the outermost LBRAC...RBRAC pair in the |
2647 | function, its local symbols preceded it, and are the ones | |
2648 | just recovered from the context stack. Define the block | |
2649 | for them (but don't bother if the block contains no | |
2650 | symbols. Should we complain on blocks without symbols? | |
2651 | I can't think of any useful purpose for them). */ | |
c906108c SS |
2652 | if (local_symbols != NULL) |
2653 | { | |
e31272c3 MK |
2654 | /* Muzzle a compiler bug that makes end < start. |
2655 | ||
2656 | ??? Which compilers? Is this ever harmful?. */ | |
fe978cb0 | 2657 | if (newobj->start_addr > valu) |
c906108c | 2658 | { |
23136709 | 2659 | complaint (&symfile_complaints, |
e2e0b3e5 | 2660 | _("block start larger than block end")); |
fe978cb0 | 2661 | newobj->start_addr = valu; |
c906108c SS |
2662 | } |
2663 | /* Make a block for the local symbols within. */ | |
63e43d3a | 2664 | finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 2665 | newobj->start_addr, valu); |
c906108c SS |
2666 | } |
2667 | } | |
2668 | else | |
2669 | { | |
2670 | /* This is the outermost LBRAC...RBRAC pair. There is no | |
2671 | need to do anything; leave the symbols that preceded it | |
2672 | to be attached to the function's own block. We need to | |
2673 | indicate that we just moved outside of the function. */ | |
2674 | within_function = 0; | |
2675 | } | |
2676 | ||
c906108c SS |
2677 | break; |
2678 | ||
2679 | case N_FN: | |
2680 | case N_FN_SEQ: | |
e31272c3 MK |
2681 | /* This kind of symbol indicates the start of an object file. |
2682 | Relocate for dynamic loading. */ | |
b8fbeb18 | 2683 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2684 | break; |
2685 | ||
2686 | case N_SO: | |
e31272c3 MK |
2687 | /* This type of symbol indicates the start of data for one |
2688 | source file. Finish the symbol table of the previous source | |
2689 | file (if any) and start accumulating a new symbol table. | |
2690 | Relocate for dynamic loading. */ | |
b8fbeb18 | 2691 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2692 | |
2693 | n_opt_found = 0; | |
2694 | ||
46212e0b | 2695 | if (get_last_source_file ()) |
c906108c SS |
2696 | { |
2697 | /* Check if previous symbol was also an N_SO (with some | |
e31272c3 MK |
2698 | sanity checks). If so, that one was actually the |
2699 | directory name, and the current one is the real file | |
0963b4bd | 2700 | name. Patch things up. */ |
c906108c SS |
2701 | if (previous_stab_code == (unsigned char) N_SO) |
2702 | { | |
2703 | patch_subfile_names (current_subfile, name); | |
0963b4bd | 2704 | break; /* Ignore repeated SOs. */ |
c906108c | 2705 | } |
4d663531 | 2706 | end_symtab (valu, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2707 | end_stabs (); |
2708 | } | |
2709 | ||
e31272c3 MK |
2710 | /* Null name means this just marks the end of text for this .o |
2711 | file. Don't start a new symtab in this case. */ | |
c906108c SS |
2712 | if (*name == '\000') |
2713 | break; | |
2714 | ||
1736a7bd | 2715 | function_start_offset = 0; |
c906108c SS |
2716 | |
2717 | start_stabs (); | |
4d663531 | 2718 | start_symtab (objfile, name, NULL, valu); |
c906108c SS |
2719 | record_debugformat ("stabs"); |
2720 | break; | |
2721 | ||
2722 | case N_SOL: | |
e31272c3 MK |
2723 | /* This type of symbol indicates the start of data for a |
2724 | sub-source-file, one whose contents were copied or included | |
2725 | in the compilation of the main source file (whose name was | |
2726 | given in the N_SO symbol). Relocate for dynamic loading. */ | |
b8fbeb18 | 2727 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
4d663531 | 2728 | start_subfile (name); |
c906108c SS |
2729 | break; |
2730 | ||
2731 | case N_BINCL: | |
2732 | push_subfile (); | |
2733 | add_new_header_file (name, valu); | |
4d663531 | 2734 | start_subfile (name); |
c906108c SS |
2735 | break; |
2736 | ||
2737 | case N_EINCL: | |
4d663531 | 2738 | start_subfile (pop_subfile ()); |
c906108c SS |
2739 | break; |
2740 | ||
2741 | case N_EXCL: | |
2742 | add_old_header_file (name, valu); | |
2743 | break; | |
2744 | ||
2745 | case N_SLINE: | |
e31272c3 MK |
2746 | /* This type of "symbol" really just records one line-number -- |
2747 | core-address correspondence. Enter it in the line list for | |
2748 | this symbol table. */ | |
c906108c | 2749 | |
e31272c3 MK |
2750 | /* Relocate for dynamic loading and for ELF acc |
2751 | function-relative symbols. */ | |
c906108c SS |
2752 | valu += function_start_offset; |
2753 | ||
ceddaf06 MK |
2754 | /* GCC 2.95.3 emits the first N_SLINE stab somwehere in the |
2755 | middle of the prologue instead of right at the start of the | |
2756 | function. To deal with this we record the address for the | |
2757 | first N_SLINE stab to be the start of the function instead of | |
2758 | the listed location. We really shouldn't to this. When | |
2759 | compiling with optimization, this first N_SLINE stab might be | |
2760 | optimized away. Other (non-GCC) compilers don't emit this | |
2761 | stab at all. There is no real harm in having an extra | |
2762 | numbered line, although it can be a bit annoying for the | |
2763 | user. However, it totally screws up our testsuite. | |
2764 | ||
2765 | So for now, keep adjusting the address of the first N_SLINE | |
2766 | stab, but only for code compiled with GCC. */ | |
2767 | ||
a1b9830c DJ |
2768 | if (within_function && sline_found_in_function == 0) |
2769 | { | |
fbf65064 UW |
2770 | CORE_ADDR addr = processing_gcc_compilation == 2 ? |
2771 | last_function_start : valu; | |
9a619af0 | 2772 | |
fbf65064 UW |
2773 | record_line (current_subfile, desc, |
2774 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
a1b9830c DJ |
2775 | sline_found_in_function = 1; |
2776 | } | |
2777 | else | |
fbf65064 UW |
2778 | record_line (current_subfile, desc, |
2779 | gdbarch_addr_bits_remove (gdbarch, valu)); | |
c906108c SS |
2780 | break; |
2781 | ||
2782 | case N_BCOMM: | |
2783 | common_block_start (name, objfile); | |
2784 | break; | |
2785 | ||
2786 | case N_ECOMM: | |
2787 | common_block_end (objfile); | |
2788 | break; | |
2789 | ||
e31272c3 MK |
2790 | /* The following symbol types need to have the appropriate |
2791 | offset added to their value; then we process symbol | |
2792 | definitions in the name. */ | |
c906108c | 2793 | |
e31272c3 MK |
2794 | case N_STSYM: /* Static symbol in data segment. */ |
2795 | case N_LCSYM: /* Static symbol in BSS segment. */ | |
2796 | case N_ROSYM: /* Static symbol in read-only data segment. */ | |
c5aa993b | 2797 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
e31272c3 MK |
2798 | Solaris 2's stabs-in-elf makes *most* symbols relative but |
2799 | leaves a few absolute (at least for Solaris 2.1 and version | |
2800 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on | |
2801 | the fence. .stab "foo:S...",N_STSYM is absolute (ld | |
2802 | relocates it) .stab "foo:V...",N_STSYM is relative (section | |
2803 | base subtracted). This leaves us no choice but to search for | |
2804 | the 'S' or 'V'... (or pass the whole section_offsets stuff | |
2805 | down ONE MORE function call level, which we really don't want | |
2806 | to do). */ | |
c906108c SS |
2807 | { |
2808 | char *p; | |
2809 | ||
e31272c3 MK |
2810 | /* Normal object file and NLMs have non-zero text seg offsets, |
2811 | but don't need their static syms offset in this fashion. | |
2812 | XXX - This is really a crock that should be fixed in the | |
2813 | solib handling code so that I don't have to work around it | |
2814 | here. */ | |
c906108c SS |
2815 | |
2816 | if (!symfile_relocatable) | |
2817 | { | |
2818 | p = strchr (name, ':'); | |
2819 | if (p != 0 && p[1] == 'S') | |
2820 | { | |
18a94d75 DE |
2821 | /* The linker relocated it. We don't want to add a |
2822 | Sun-stabs Tfoo.foo-like offset, but we *do* | |
e31272c3 MK |
2823 | want to add whatever solib.c passed to |
2824 | symbol_file_add as addr (this is known to affect | |
18a94d75 DE |
2825 | SunOS 4, and I suspect ELF too). Since there is no |
2826 | Ttext.text symbol, we can get addr from the text offset. */ | |
b8fbeb18 | 2827 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2828 | goto define_a_symbol; |
2829 | } | |
2830 | } | |
e31272c3 MK |
2831 | /* Since it's not the kludge case, re-dispatch to the right |
2832 | handler. */ | |
c5aa993b JM |
2833 | switch (type) |
2834 | { | |
2835 | case N_STSYM: | |
2836 | goto case_N_STSYM; | |
2837 | case N_LCSYM: | |
2838 | goto case_N_LCSYM; | |
2839 | case N_ROSYM: | |
2840 | goto case_N_ROSYM; | |
2841 | default: | |
e31272c3 | 2842 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2843 | _("failed internal consistency check")); |
c5aa993b | 2844 | } |
c906108c SS |
2845 | } |
2846 | ||
e31272c3 MK |
2847 | case_N_STSYM: /* Static symbol in data segment. */ |
2848 | case N_DSLINE: /* Source line number, data segment. */ | |
b8fbeb18 | 2849 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
2850 | goto define_a_symbol; |
2851 | ||
e31272c3 MK |
2852 | case_N_LCSYM: /* Static symbol in BSS segment. */ |
2853 | case N_BSLINE: /* Source line number, BSS segment. */ | |
2854 | /* N_BROWS: overlaps with N_BSLINE. */ | |
b8fbeb18 | 2855 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
2856 | goto define_a_symbol; |
2857 | ||
e31272c3 | 2858 | case_N_ROSYM: /* Static symbol in read-only data segment. */ |
b8fbeb18 | 2859 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA (objfile)); |
c906108c SS |
2860 | goto define_a_symbol; |
2861 | ||
e31272c3 MK |
2862 | case N_ENTRY: /* Alternate entry point. */ |
2863 | /* Relocate for dynamic loading. */ | |
b8fbeb18 | 2864 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2865 | goto define_a_symbol; |
2866 | ||
e31272c3 MK |
2867 | /* The following symbol types we don't know how to process. |
2868 | Handle them in a "default" way, but complain to people who | |
2869 | care. */ | |
c906108c | 2870 | default: |
e31272c3 MK |
2871 | case N_CATCH: /* Exception handler catcher. */ |
2872 | case N_EHDECL: /* Exception handler name. */ | |
2873 | case N_PC: /* Global symbol in Pascal. */ | |
2874 | case N_M2C: /* Modula-2 compilation unit. */ | |
2875 | /* N_MOD2: overlaps with N_EHDECL. */ | |
2876 | case N_SCOPE: /* Modula-2 scope information. */ | |
2877 | case N_ECOML: /* End common (local name). */ | |
2878 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
c906108c SS |
2879 | case N_NBDATA: |
2880 | case N_NBBSS: | |
2881 | case N_NBSTS: | |
2882 | case N_NBLCS: | |
bb599908 | 2883 | unknown_symtype_complaint (hex_string (type)); |
c906108c SS |
2884 | /* FALLTHROUGH */ |
2885 | ||
e31272c3 MK |
2886 | /* The following symbol types don't need the address field |
2887 | relocated, since it is either unused, or is absolute. */ | |
c906108c | 2888 | define_a_symbol: |
e31272c3 MK |
2889 | case N_GSYM: /* Global variable. */ |
2890 | case N_NSYMS: /* Number of symbols (Ultrix). */ | |
2891 | case N_NOMAP: /* No map? (Ultrix). */ | |
2892 | case N_RSYM: /* Register variable. */ | |
2893 | case N_DEFD: /* Modula-2 GNU module dependency. */ | |
2894 | case N_SSYM: /* Struct or union element. */ | |
2895 | case N_LSYM: /* Local symbol in stack. */ | |
2896 | case N_PSYM: /* Parameter variable. */ | |
2897 | case N_LENG: /* Length of preceding symbol type. */ | |
c906108c SS |
2898 | if (name) |
2899 | { | |
2900 | int deftype; | |
2901 | char *colon_pos = strchr (name, ':'); | |
9a619af0 | 2902 | |
c906108c SS |
2903 | if (colon_pos == NULL) |
2904 | deftype = '\0'; | |
2905 | else | |
2906 | deftype = colon_pos[1]; | |
2907 | ||
2908 | switch (deftype) | |
2909 | { | |
2910 | case 'f': | |
2911 | case 'F': | |
e31272c3 MK |
2912 | /* Deal with the SunPRO 3.0 compiler which omits the |
2913 | address from N_FUN symbols. */ | |
c906108c | 2914 | if (type == N_FUN |
e31272c3 | 2915 | && valu == ANOFFSET (section_offsets, |
203c3895 | 2916 | SECT_OFF_TEXT (objfile)) |
5e2b427d | 2917 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9a058a09 KB |
2918 | { |
2919 | CORE_ADDR minsym_valu = | |
46212e0b TT |
2920 | find_stab_function_addr (name, get_last_source_file (), |
2921 | objfile); | |
9a058a09 | 2922 | |
e31272c3 MK |
2923 | /* The function find_stab_function_addr will return |
2924 | 0 if the minimal symbol wasn't found. | |
2925 | (Unfortunately, this might also be a valid | |
2926 | address.) Anyway, if it *does* return 0, it is | |
2927 | likely that the value was set correctly to begin | |
2928 | with... */ | |
9a058a09 KB |
2929 | if (minsym_valu != 0) |
2930 | valu = minsym_valu; | |
2931 | } | |
c906108c | 2932 | |
1736a7bd PA |
2933 | /* These addresses are absolute. */ |
2934 | function_start_offset = valu; | |
c906108c SS |
2935 | |
2936 | within_function = 1; | |
c3f6f71d JM |
2937 | |
2938 | if (context_stack_depth > 1) | |
2939 | { | |
23136709 | 2940 | complaint (&symfile_complaints, |
063e58ba MD |
2941 | _("unmatched N_LBRAC before symtab pos %d"), |
2942 | symnum); | |
c3f6f71d JM |
2943 | break; |
2944 | } | |
2945 | ||
c906108c SS |
2946 | if (context_stack_depth > 0) |
2947 | { | |
df8a16a1 DJ |
2948 | struct block *block; |
2949 | ||
fe978cb0 | 2950 | newobj = pop_context (); |
c906108c | 2951 | /* Make a block for the local symbols within. */ |
fe978cb0 | 2952 | block = finish_block (newobj->name, &local_symbols, |
63e43d3a PMR |
2953 | newobj->old_blocks, NULL, |
2954 | newobj->start_addr, valu); | |
df8a16a1 DJ |
2955 | |
2956 | /* For C++, set the block's scope. */ | |
fe978cb0 PA |
2957 | if (SYMBOL_LANGUAGE (newobj->name) == language_cplus) |
2958 | cp_set_block_scope (newobj->name, block, | |
195a3f6c | 2959 | &objfile->objfile_obstack); |
c906108c | 2960 | } |
c906108c | 2961 | |
fe978cb0 PA |
2962 | newobj = push_context (0, valu); |
2963 | newobj->name = define_symbol (valu, name, desc, type, objfile); | |
c906108c SS |
2964 | break; |
2965 | ||
2966 | default: | |
2967 | define_symbol (valu, name, desc, type, objfile); | |
2968 | break; | |
2969 | } | |
2970 | } | |
2971 | break; | |
2972 | ||
c5aa993b JM |
2973 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
2974 | for a bunch of other flags, too. Someday we may parse their | |
2975 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
e31272c3 | 2976 | case N_OPT: /* Solaris 2: Compiler options. */ |
c906108c SS |
2977 | if (name) |
2978 | { | |
6314a349 | 2979 | if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2980 | { |
2981 | processing_gcc_compilation = 2; | |
c906108c SS |
2982 | } |
2983 | else | |
2984 | n_opt_found = 1; | |
2985 | } | |
2986 | break; | |
2987 | ||
51cc5b07 AC |
2988 | case N_MAIN: /* Name of main routine. */ |
2989 | /* FIXME: If one has a symbol file with N_MAIN and then replaces | |
2990 | it with a symbol file with "main" and without N_MAIN. I'm | |
2991 | not sure exactly what rule to follow but probably something | |
2992 | like: N_MAIN takes precedence over "main" no matter what | |
2993 | objfile it is in; If there is more than one N_MAIN, choose | |
2994 | the one in the symfile_objfile; If there is more than one | |
2995 | N_MAIN within a given objfile, complain() and choose | |
0963b4bd | 2996 | arbitrarily. (kingdon) */ |
51cc5b07 | 2997 | if (name != NULL) |
3d548a53 | 2998 | set_objfile_main_name (objfile, name, language_unknown); |
51cc5b07 AC |
2999 | break; |
3000 | ||
c5aa993b | 3001 | /* The following symbol types can be ignored. */ |
e31272c3 MK |
3002 | case N_OBJ: /* Solaris 2: Object file dir and name. */ |
3003 | case N_PATCH: /* Solaris 2: Patch Run Time Checker. */ | |
3004 | /* N_UNDF: Solaris 2: File separator mark. */ | |
3005 | /* N_UNDF: -- we will never encounter it, since we only process | |
3006 | one file's symbols at once. */ | |
3007 | case N_ENDM: /* Solaris 2: End of module. */ | |
c906108c SS |
3008 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
3009 | break; | |
3010 | } | |
3011 | ||
3012 | /* '#' is a GNU C extension to allow one symbol to refer to another | |
3013 | related symbol. | |
3014 | ||
3015 | Generally this is used so that an alias can refer to its main | |
c5aa993b | 3016 | symbol. */ |
13f6513c | 3017 | gdb_assert (name); |
c906108c SS |
3018 | if (name[0] == '#') |
3019 | { | |
e31272c3 MK |
3020 | /* Initialize symbol reference names and determine if this is a |
3021 | definition. If a symbol reference is being defined, go ahead | |
3022 | and add it. Otherwise, just return. */ | |
c906108c SS |
3023 | |
3024 | char *s = name; | |
3025 | int refnum; | |
3026 | ||
3027 | /* If this stab defines a new reference ID that is not on the | |
c5aa993b | 3028 | reference list, then put it on the reference list. |
c906108c | 3029 | |
c5aa993b JM |
3030 | We go ahead and advance NAME past the reference, even though |
3031 | it is not strictly necessary at this time. */ | |
c906108c SS |
3032 | refnum = symbol_reference_defined (&s); |
3033 | if (refnum >= 0) | |
3034 | if (!ref_search (refnum)) | |
3035 | ref_add (refnum, 0, name, valu); | |
3036 | name = s; | |
3037 | } | |
3038 | ||
c906108c SS |
3039 | previous_stab_code = type; |
3040 | } | |
3041 | \f | |
3042 | /* FIXME: The only difference between this and elfstab_build_psymtabs | |
3043 | is the call to install_minimal_symbols for elf, and the support for | |
3044 | split sections. If the differences are really that small, the code | |
3045 | should be shared. */ | |
3046 | ||
3047 | /* Scan and build partial symbols for an coff symbol file. | |
3048 | The coff file has already been processed to get its minimal symbols. | |
3049 | ||
3050 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3051 | rolled into one. | |
3052 | ||
3053 | OBJFILE is the object file we are reading symbols from. | |
3054 | ADDR is the address relative to which the symbols are (e.g. | |
3055 | the base address of the text segment). | |
c906108c SS |
3056 | TEXTADDR is the address of the text section. |
3057 | TEXTSIZE is the size of the text section. | |
3058 | STABSECTS is the list of .stab sections in OBJFILE. | |
3059 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
3060 | .stabstr section exists. | |
3061 | ||
3062 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 3063 | adjusted for coff details. */ |
c906108c SS |
3064 | |
3065 | void | |
c67a9c90 | 3066 | coffstab_build_psymtabs (struct objfile *objfile, |
fba45db2 KB |
3067 | CORE_ADDR textaddr, unsigned int textsize, |
3068 | struct stab_section_list *stabsects, | |
3069 | file_ptr stabstroffset, unsigned int stabstrsize) | |
c906108c SS |
3070 | { |
3071 | int val; | |
3072 | bfd *sym_bfd = objfile->obfd; | |
3073 | char *name = bfd_get_filename (sym_bfd); | |
c906108c SS |
3074 | unsigned int stabsize; |
3075 | ||
c906108c SS |
3076 | DBX_TEXT_ADDR (objfile) = textaddr; |
3077 | DBX_TEXT_SIZE (objfile) = textsize; | |
3078 | ||
3079 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3080 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; |
c906108c | 3081 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
c5aa993b | 3082 | |
c906108c | 3083 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3084 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3085 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3086 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3087 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3088 | |
3089 | /* Now read in the string table in one big gulp. */ | |
3090 | ||
3091 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3092 | if (val < 0) | |
3093 | perror_with_name (name); | |
3a42e9d0 | 3094 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3095 | if (val != stabstrsize) |
3096 | perror_with_name (name); | |
3097 | ||
3098 | stabsread_new_init (); | |
3099 | buildsym_new_init (); | |
3100 | free_header_files (); | |
3101 | init_header_files (); | |
3102 | ||
3103 | processing_acc_compilation = 1; | |
3104 | ||
3105 | /* In a coff file, we've already installed the minimal symbols that came | |
3106 | from the coff (non-stab) symbol table, so always act like an | |
0963b4bd | 3107 | incremental load here. */ |
c906108c SS |
3108 | if (stabsects->next == NULL) |
3109 | { | |
3110 | stabsize = bfd_section_size (sym_bfd, stabsects->section); | |
3111 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
3112 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3113 | } | |
3114 | else | |
3115 | { | |
3116 | struct stab_section_list *stabsect; | |
3117 | ||
3118 | DBX_SYMCOUNT (objfile) = 0; | |
3119 | for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next) | |
3120 | { | |
3121 | stabsize = bfd_section_size (sym_bfd, stabsect->section); | |
3122 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); | |
3123 | } | |
3124 | ||
3125 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3126 | ||
3127 | symbuf_sections = stabsects->next; | |
3128 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section); | |
3129 | symbuf_read = 0; | |
3130 | } | |
3131 | ||
96baa820 | 3132 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3133 | } |
3134 | \f | |
3135 | /* Scan and build partial symbols for an ELF symbol file. | |
fea25152 | 3136 | This ELF file has already been processed to get its minimal symbols. |
c906108c SS |
3137 | |
3138 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3139 | rolled into one. | |
3140 | ||
3141 | OBJFILE is the object file we are reading symbols from. | |
3142 | ADDR is the address relative to which the symbols are (e.g. | |
3143 | the base address of the text segment). | |
086df311 | 3144 | STABSECT is the BFD section information for the .stab section. |
c906108c SS |
3145 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
3146 | .stabstr section exists. | |
3147 | ||
3148 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 3149 | adjusted for elf details. */ |
c906108c SS |
3150 | |
3151 | void | |
c67a9c90 | 3152 | elfstab_build_psymtabs (struct objfile *objfile, asection *stabsect, |
fba45db2 | 3153 | file_ptr stabstroffset, unsigned int stabstrsize) |
c906108c SS |
3154 | { |
3155 | int val; | |
3156 | bfd *sym_bfd = objfile->obfd; | |
3157 | char *name = bfd_get_filename (sym_bfd); | |
5fe41fbf | 3158 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
c906108c | 3159 | |
7a292a7a SS |
3160 | /* Find the first and last text address. dbx_symfile_read seems to |
3161 | want this. */ | |
3162 | find_text_range (sym_bfd, objfile); | |
c906108c SS |
3163 | |
3164 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3165 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; |
086df311 DJ |
3166 | DBX_SYMCOUNT (objfile) |
3167 | = bfd_section_size (objfile->obfd, stabsect) / DBX_SYMBOL_SIZE (objfile); | |
c906108c | 3168 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
086df311 DJ |
3169 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; |
3170 | DBX_STAB_SECTION (objfile) = stabsect; | |
c5aa993b | 3171 | |
c906108c | 3172 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3173 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3174 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3175 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3176 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3177 | |
3178 | /* Now read in the string table in one big gulp. */ | |
3179 | ||
3180 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3181 | if (val < 0) | |
3182 | perror_with_name (name); | |
3a42e9d0 | 3183 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3184 | if (val != stabstrsize) |
3185 | perror_with_name (name); | |
3186 | ||
3187 | stabsread_new_init (); | |
3188 | buildsym_new_init (); | |
3189 | free_header_files (); | |
3190 | init_header_files (); | |
c906108c SS |
3191 | |
3192 | processing_acc_compilation = 1; | |
3193 | ||
086df311 DJ |
3194 | symbuf_read = 0; |
3195 | symbuf_left = bfd_section_size (objfile->obfd, stabsect); | |
ac8035ab | 3196 | stabs_data = symfile_relocate_debug_section (objfile, stabsect, NULL); |
086df311 | 3197 | if (stabs_data) |
5fe41fbf | 3198 | make_cleanup (free_current_contents, (void *) &stabs_data); |
086df311 | 3199 | |
c906108c SS |
3200 | /* In an elf file, we've already installed the minimal symbols that came |
3201 | from the elf (non-stab) symbol table, so always act like an | |
7134143f DJ |
3202 | incremental load here. dbx_symfile_read should not generate any new |
3203 | minimal symbols, since we will have already read the ELF dynamic symbol | |
3204 | table and normal symbol entries won't be in the ".stab" section; but in | |
3205 | case it does, it will install them itself. */ | |
96baa820 | 3206 | dbx_symfile_read (objfile, 0); |
086df311 | 3207 | |
5fe41fbf | 3208 | do_cleanups (back_to); |
c906108c SS |
3209 | } |
3210 | \f | |
3211 | /* Scan and build partial symbols for a file with special sections for stabs | |
3212 | and stabstrings. The file has already been processed to get its minimal | |
3213 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
3214 | ||
3215 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3216 | rolled into one. | |
3217 | ||
3218 | OBJFILE is the object file we are reading symbols from. | |
3219 | ADDR is the address relative to which the symbols are (e.g. the base address | |
c5aa993b | 3220 | of the text segment). |
c906108c SS |
3221 | STAB_NAME is the name of the section that contains the stabs. |
3222 | STABSTR_NAME is the name of the section that contains the stab strings. | |
3223 | ||
0963b4bd MS |
3224 | This routine is mostly copied from dbx_symfile_init and |
3225 | dbx_symfile_read. */ | |
c906108c SS |
3226 | |
3227 | void | |
c67a9c90 | 3228 | stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, |
fba45db2 | 3229 | char *stabstr_name, char *text_name) |
c906108c SS |
3230 | { |
3231 | int val; | |
3232 | bfd *sym_bfd = objfile->obfd; | |
3233 | char *name = bfd_get_filename (sym_bfd); | |
3234 | asection *stabsect; | |
3235 | asection *stabstrsect; | |
3236 | asection *text_sect; | |
d2f4b8fe | 3237 | struct dbx_symfile_info *dbx; |
c906108c SS |
3238 | |
3239 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
3240 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
3241 | ||
3242 | if (!stabsect) | |
3243 | return; | |
3244 | ||
3245 | if (!stabstrsect) | |
0963b4bd MS |
3246 | error (_("stabsect_build_psymtabs: Found stabs (%s), " |
3247 | "but not string section (%s)"), | |
c906108c SS |
3248 | stab_name, stabstr_name); |
3249 | ||
d2f4b8fe TT |
3250 | dbx = XCNEW (struct dbx_symfile_info); |
3251 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c SS |
3252 | |
3253 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); | |
3254 | if (!text_sect) | |
8a3fe4f8 | 3255 | error (_("Can't find %s section in symbol file"), text_name); |
c906108c SS |
3256 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
3257 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
3258 | ||
c5aa993b JM |
3259 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); |
3260 | DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect) | |
c906108c SS |
3261 | / DBX_SYMBOL_SIZE (objfile); |
3262 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect); | |
3e43a32a MS |
3263 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING |
3264 | INSIDE BFD DATA | |
3265 | STRUCTURES */ | |
c5aa993b | 3266 | |
c906108c | 3267 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) |
063e58ba MD |
3268 | error (_("ridiculous string table size: %d bytes"), |
3269 | DBX_STRINGTAB_SIZE (objfile)); | |
c906108c | 3270 | DBX_STRINGTAB (objfile) = (char *) |
3e43a32a MS |
3271 | obstack_alloc (&objfile->objfile_obstack, |
3272 | DBX_STRINGTAB_SIZE (objfile) + 1); | |
c906108c SS |
3273 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); |
3274 | ||
3275 | /* Now read in the string table in one big gulp. */ | |
3276 | ||
c5aa993b JM |
3277 | val = bfd_get_section_contents (sym_bfd, /* bfd */ |
3278 | stabstrsect, /* bfd section */ | |
063e58ba | 3279 | DBX_STRINGTAB (objfile), /* input buffer */ |
3e43a32a MS |
3280 | 0, /* offset into section */ |
3281 | DBX_STRINGTAB_SIZE (objfile)); /* amount to | |
3282 | read */ | |
c906108c SS |
3283 | |
3284 | if (!val) | |
3285 | perror_with_name (name); | |
3286 | ||
3287 | stabsread_new_init (); | |
3288 | buildsym_new_init (); | |
3289 | free_header_files (); | |
3290 | init_header_files (); | |
c906108c | 3291 | |
0963b4bd | 3292 | /* Now, do an incremental load. */ |
c906108c SS |
3293 | |
3294 | processing_acc_compilation = 1; | |
96baa820 | 3295 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3296 | } |
3297 | \f | |
00b5771c | 3298 | static const struct sym_fns aout_sym_fns = |
c906108c | 3299 | { |
0963b4bd MS |
3300 | dbx_new_init, /* init anything gbl to entire symtab */ |
3301 | dbx_symfile_init, /* read initial info, setup for sym_read() */ | |
3302 | dbx_symfile_read, /* read a symbol file into symtab */ | |
b11896a5 | 3303 | NULL, /* sym_read_psymbols */ |
0963b4bd MS |
3304 | dbx_symfile_finish, /* finished with file, cleanup */ |
3305 | default_symfile_offsets, /* parse user's offsets to internal form */ | |
3306 | default_symfile_segments, /* Get segment information from a file. */ | |
3307 | NULL, | |
3308 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3309 | NULL, /* sym_probe_fns */ |
00b5771c | 3310 | &psym_functions |
c906108c SS |
3311 | }; |
3312 | ||
3313 | void | |
fba45db2 | 3314 | _initialize_dbxread (void) |
c906108c | 3315 | { |
c256e171 | 3316 | add_symtab_fns (bfd_target_aout_flavour, &aout_sym_fns); |
d2f4b8fe TT |
3317 | |
3318 | dbx_objfile_data_key | |
3319 | = register_objfile_data_with_cleanup (NULL, dbx_free_symfile_info); | |
c906108c | 3320 | } |