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 | { | |
a121b7c1 | 240 | const char *name; /* Name of header file */ |
c906108c SS |
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 | |
5c80ed9d | 252 | static void read_ofile_symtab (struct objfile *, struct partial_symtab *); |
c906108c | 253 | |
257e7a09 YQ |
254 | static void dbx_read_symtab (struct partial_symtab *self, |
255 | struct objfile *objfile); | |
c906108c | 256 | |
5c80ed9d | 257 | static void dbx_psymtab_to_symtab_1 (struct objfile *, struct partial_symtab *); |
c906108c | 258 | |
8dddcb8f | 259 | static void read_dbx_symtab (minimal_symbol_reader &, struct objfile *); |
c906108c | 260 | |
a14ed312 | 261 | static void free_bincl_list (struct objfile *); |
c906108c | 262 | |
a121b7c1 PA |
263 | static struct partial_symtab *find_corresponding_bincl_psymtab (const char *, |
264 | int); | |
c906108c | 265 | |
a121b7c1 | 266 | static void add_bincl_to_list (struct partial_symtab *, const char *, int); |
c906108c | 267 | |
a14ed312 | 268 | static void init_bincl_list (int, struct objfile *); |
c906108c | 269 | |
a121b7c1 | 270 | static const char *dbx_next_symbol_text (struct objfile *); |
c906108c | 271 | |
a14ed312 | 272 | static void fill_symbuf (bfd *); |
c906108c | 273 | |
a14ed312 | 274 | static void dbx_symfile_init (struct objfile *); |
c906108c | 275 | |
a14ed312 | 276 | static void dbx_new_init (struct objfile *); |
c906108c | 277 | |
b15cc25c | 278 | static void dbx_symfile_read (struct objfile *, symfile_add_flags); |
c906108c | 279 | |
a14ed312 | 280 | static void dbx_symfile_finish (struct objfile *); |
c906108c | 281 | |
8dddcb8f TT |
282 | static void record_minimal_symbol (minimal_symbol_reader &, |
283 | const char *, CORE_ADDR, int, | |
bec71544 | 284 | struct objfile *); |
c906108c | 285 | |
a121b7c1 | 286 | static void add_new_header_file (const char *, int); |
c906108c | 287 | |
a121b7c1 | 288 | static void add_old_header_file (const char *, int); |
c906108c | 289 | |
a14ed312 | 290 | static void add_this_object_header_file (int); |
c906108c | 291 | |
a121b7c1 | 292 | static struct partial_symtab *start_psymtab (struct objfile *, const char *, |
a14ed312 | 293 | CORE_ADDR, int, |
af5bf4ad SM |
294 | std::vector<partial_symbol *> &, |
295 | std::vector<partial_symbol *> &); | |
d4f3574e | 296 | |
0963b4bd | 297 | /* Free up old header file tables. */ |
c906108c | 298 | |
d3d55eeb | 299 | void |
fba45db2 | 300 | free_header_files (void) |
c906108c SS |
301 | { |
302 | if (this_object_header_files) | |
303 | { | |
b8c9b27d | 304 | xfree (this_object_header_files); |
c906108c SS |
305 | this_object_header_files = NULL; |
306 | } | |
307 | n_allocated_this_object_header_files = 0; | |
308 | } | |
309 | ||
0963b4bd | 310 | /* Allocate new header file tables. */ |
c906108c | 311 | |
d3d55eeb | 312 | void |
fba45db2 | 313 | init_header_files (void) |
c906108c SS |
314 | { |
315 | n_allocated_this_object_header_files = 10; | |
8d749320 | 316 | this_object_header_files = XNEWVEC (int, 10); |
c906108c SS |
317 | } |
318 | ||
319 | /* Add header file number I for this object file | |
320 | at the next successive FILENUM. */ | |
321 | ||
322 | static void | |
fba45db2 | 323 | add_this_object_header_file (int i) |
c906108c SS |
324 | { |
325 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
326 | { | |
327 | n_allocated_this_object_header_files *= 2; | |
328 | this_object_header_files | |
329 | = (int *) xrealloc ((char *) this_object_header_files, | |
c5aa993b | 330 | n_allocated_this_object_header_files * sizeof (int)); |
c906108c SS |
331 | } |
332 | ||
333 | this_object_header_files[n_this_object_header_files++] = i; | |
334 | } | |
335 | ||
336 | /* Add to this file an "old" header file, one already seen in | |
337 | a previous object file. NAME is the header file's name. | |
338 | INSTANCE is its instance code, to select among multiple | |
339 | symbol tables for the same header file. */ | |
340 | ||
341 | static void | |
a121b7c1 | 342 | add_old_header_file (const char *name, int instance) |
c906108c | 343 | { |
dd707e8e | 344 | struct header_file *p = HEADER_FILES (dbxread_objfile); |
52f0bd74 | 345 | int i; |
c906108c | 346 | |
dd707e8e | 347 | for (i = 0; i < N_HEADER_FILES (dbxread_objfile); i++) |
0ba1096a | 348 | if (filename_cmp (p[i].name, name) == 0 && instance == p[i].instance) |
c906108c SS |
349 | { |
350 | add_this_object_header_file (i); | |
351 | return; | |
352 | } | |
23136709 | 353 | repeated_header_complaint (name, symnum); |
c906108c SS |
354 | } |
355 | ||
356 | /* Add to this file a "new" header file: definitions for its types follow. | |
357 | NAME is the header file's name. | |
358 | Most often this happens only once for each distinct header file, | |
359 | but not necessarily. If it happens more than once, INSTANCE has | |
360 | a different value each time, and references to the header file | |
361 | use INSTANCE values to select among them. | |
362 | ||
363 | dbx output contains "begin" and "end" markers for each new header file, | |
364 | but at this level we just need to know which files there have been; | |
365 | so we record the file when its "begin" is seen and ignore the "end". */ | |
366 | ||
367 | static void | |
a121b7c1 | 368 | add_new_header_file (const char *name, int instance) |
c906108c | 369 | { |
52f0bd74 AC |
370 | int i; |
371 | struct header_file *hfile; | |
c906108c SS |
372 | |
373 | /* Make sure there is room for one more header file. */ | |
374 | ||
dd707e8e | 375 | i = N_ALLOCATED_HEADER_FILES (dbxread_objfile); |
c906108c | 376 | |
dd707e8e | 377 | if (N_HEADER_FILES (dbxread_objfile) == i) |
c906108c SS |
378 | { |
379 | if (i == 0) | |
380 | { | |
dd707e8e TT |
381 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = 10; |
382 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
c906108c SS |
383 | xmalloc (10 * sizeof (struct header_file)); |
384 | } | |
385 | else | |
386 | { | |
387 | i *= 2; | |
dd707e8e TT |
388 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = i; |
389 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
390 | xrealloc ((char *) HEADER_FILES (dbxread_objfile), | |
c906108c SS |
391 | (i * sizeof (struct header_file))); |
392 | } | |
393 | } | |
394 | ||
395 | /* Create an entry for this header file. */ | |
396 | ||
dd707e8e TT |
397 | i = N_HEADER_FILES (dbxread_objfile)++; |
398 | hfile = HEADER_FILES (dbxread_objfile) + i; | |
1b36a34b | 399 | hfile->name = xstrdup (name); |
c906108c SS |
400 | hfile->instance = instance; |
401 | hfile->length = 10; | |
8d749320 | 402 | hfile->vector = XCNEWVEC (struct type *, 10); |
c906108c SS |
403 | |
404 | add_this_object_header_file (i); | |
405 | } | |
406 | ||
407 | #if 0 | |
408 | static struct type ** | |
fba45db2 | 409 | explicit_lookup_type (int real_filenum, int index) |
c906108c | 410 | { |
dd707e8e | 411 | struct header_file *f = &HEADER_FILES (dbxread_objfile)[real_filenum]; |
c906108c SS |
412 | |
413 | if (index >= f->length) | |
414 | { | |
415 | f->length *= 2; | |
416 | f->vector = (struct type **) | |
417 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
418 | memset (&f->vector[f->length / 2], | |
c5aa993b | 419 | '\0', f->length * sizeof (struct type *) / 2); |
c906108c SS |
420 | } |
421 | return &f->vector[index]; | |
422 | } | |
423 | #endif | |
424 | \f | |
425 | static void | |
8dddcb8f TT |
426 | record_minimal_symbol (minimal_symbol_reader &reader, |
427 | const char *name, CORE_ADDR address, int type, | |
fba45db2 | 428 | struct objfile *objfile) |
c906108c SS |
429 | { |
430 | enum minimal_symbol_type ms_type; | |
431 | int section; | |
c906108c SS |
432 | |
433 | switch (type) | |
434 | { | |
435 | case N_TEXT | N_EXT: | |
436 | ms_type = mst_text; | |
b8fbeb18 | 437 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
438 | break; |
439 | case N_DATA | N_EXT: | |
440 | ms_type = mst_data; | |
b8fbeb18 | 441 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
442 | break; |
443 | case N_BSS | N_EXT: | |
444 | ms_type = mst_bss; | |
b8fbeb18 | 445 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
446 | break; |
447 | case N_ABS | N_EXT: | |
448 | ms_type = mst_abs; | |
449 | section = -1; | |
c906108c SS |
450 | break; |
451 | #ifdef N_SETV | |
452 | case N_SETV | N_EXT: | |
453 | ms_type = mst_data; | |
b8fbeb18 | 454 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
455 | break; |
456 | case N_SETV: | |
457 | /* I don't think this type actually exists; since a N_SETV is the result | |
c5aa993b JM |
458 | of going over many .o files, it doesn't make sense to have one |
459 | file local. */ | |
c906108c | 460 | ms_type = mst_file_data; |
b8fbeb18 | 461 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
462 | break; |
463 | #endif | |
464 | case N_TEXT: | |
465 | case N_NBTEXT: | |
466 | case N_FN: | |
467 | case N_FN_SEQ: | |
468 | ms_type = mst_file_text; | |
b8fbeb18 | 469 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
470 | break; |
471 | case N_DATA: | |
472 | ms_type = mst_file_data; | |
473 | ||
474 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
c5aa993b JM |
475 | Record it as global even if it's local, not global, so |
476 | lookup_minimal_symbol can find it. We don't check symbol_leading_char | |
477 | because for SunOS4 it always is '_'. */ | |
91f54576 | 478 | if (name[8] == 'C' && strcmp ("__DYNAMIC", name) == 0) |
c906108c SS |
479 | ms_type = mst_data; |
480 | ||
481 | /* Same with virtual function tables, both global and static. */ | |
482 | { | |
bec71544 | 483 | const char *tempstring = name; |
9a619af0 | 484 | |
c906108c SS |
485 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) |
486 | ++tempstring; | |
015a42b4 | 487 | if (is_vtable_name (tempstring)) |
c906108c SS |
488 | ms_type = mst_data; |
489 | } | |
b8fbeb18 | 490 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
491 | break; |
492 | case N_BSS: | |
493 | ms_type = mst_file_bss; | |
b8fbeb18 | 494 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
495 | break; |
496 | default: | |
497 | ms_type = mst_unknown; | |
498 | section = -1; | |
c906108c | 499 | break; |
c5aa993b | 500 | } |
c906108c SS |
501 | |
502 | if ((ms_type == mst_file_text || ms_type == mst_text) | |
503 | && address < lowest_text_address) | |
504 | lowest_text_address = address; | |
505 | ||
8dddcb8f | 506 | reader.record_with_info (name, address, ms_type, section); |
c906108c SS |
507 | } |
508 | \f | |
509 | /* Scan and build partial symbols for a symbol file. | |
510 | We have been initialized by a call to dbx_symfile_init, which | |
511 | put all the relevant info into a "struct dbx_symfile_info", | |
f4352531 | 512 | hung off the objfile structure. */ |
c906108c SS |
513 | |
514 | static void | |
b15cc25c | 515 | dbx_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
516 | { |
517 | bfd *sym_bfd; | |
518 | int val; | |
c906108c | 519 | |
c906108c SS |
520 | sym_bfd = objfile->obfd; |
521 | ||
522 | /* .o and .nlm files are relocatables with text, data and bss segs based at | |
523 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for | |
524 | symbols with a value of 0. */ | |
525 | ||
526 | symfile_relocatable = bfd_get_file_flags (sym_bfd) & HAS_RELOC; | |
527 | ||
c906108c SS |
528 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); |
529 | if (val < 0) | |
4262abfb | 530 | perror_with_name (objfile_name (objfile)); |
c906108c | 531 | |
de1d8fb9 | 532 | /* Size the symbol table. */ |
af5bf4ad SM |
533 | if (objfile->global_psymbols.capacity () == 0 |
534 | && objfile->static_psymbols.capacity () == 0) | |
c906108c SS |
535 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); |
536 | ||
537 | symbol_size = DBX_SYMBOL_SIZE (objfile); | |
538 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
539 | ||
540 | free_pending_blocks (); | |
33c7c59d | 541 | scoped_free_pendings free_pending; |
c906108c | 542 | |
d25e8719 | 543 | minimal_symbol_reader reader (objfile); |
c906108c | 544 | |
0963b4bd | 545 | /* Read stabs data from executable file and define symbols. */ |
c906108c | 546 | |
8dddcb8f | 547 | read_dbx_symtab (reader, objfile); |
c906108c | 548 | |
c906108c | 549 | /* Install any minimal symbols that have been collected as the current |
0963b4bd | 550 | minimal symbols for this objfile. */ |
c906108c | 551 | |
d25e8719 | 552 | reader.install (); |
c906108c SS |
553 | } |
554 | ||
555 | /* Initialize anything that needs initializing when a completely new | |
556 | symbol file is specified (not just adding some symbols from another | |
557 | file, e.g. a shared library). */ | |
558 | ||
559 | static void | |
fba45db2 | 560 | dbx_new_init (struct objfile *ignore) |
c906108c SS |
561 | { |
562 | stabsread_new_init (); | |
563 | buildsym_new_init (); | |
564 | init_header_files (); | |
565 | } | |
566 | ||
567 | ||
568 | /* dbx_symfile_init () | |
569 | is the dbx-specific initialization routine for reading symbols. | |
570 | It is passed a struct objfile which contains, among other things, | |
571 | the BFD for the file whose symbols are being read, and a slot for a pointer | |
572 | to "private data" which we fill with goodies. | |
573 | ||
574 | We read the string table into malloc'd space and stash a pointer to it. | |
575 | ||
576 | Since BFD doesn't know how to read debug symbols in a format-independent | |
577 | way (and may never do so...), we have to do it ourselves. We will never | |
0963b4bd | 578 | be called unless this is an a.out (or very similar) file. |
c906108c SS |
579 | FIXME, there should be a cleaner peephole into the BFD environment here. */ |
580 | ||
c5aa993b | 581 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
c906108c SS |
582 | |
583 | static void | |
fba45db2 | 584 | dbx_symfile_init (struct objfile *objfile) |
c906108c SS |
585 | { |
586 | int val; | |
587 | bfd *sym_bfd = objfile->obfd; | |
588 | char *name = bfd_get_filename (sym_bfd); | |
589 | asection *text_sect; | |
590 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; | |
d2f4b8fe | 591 | struct dbx_symfile_info *dbx; |
c906108c | 592 | |
0963b4bd | 593 | /* Allocate struct to keep track of the symfile. */ |
d2f4b8fe TT |
594 | dbx = XCNEW (struct dbx_symfile_info); |
595 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c SS |
596 | |
597 | DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
598 | DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data"); | |
599 | DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss"); | |
600 | ||
0963b4bd | 601 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c SS |
602 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
603 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
604 | ||
0963b4bd | 605 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c | 606 | |
c906108c SS |
607 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
608 | if (!text_sect) | |
8a3fe4f8 | 609 | error (_("Can't find .text section in symbol file")); |
c906108c SS |
610 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
611 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
612 | ||
613 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); | |
614 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); | |
615 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; | |
616 | ||
8b92e4d5 EZ |
617 | /* Read the string table and stash it away in the objfile_obstack. |
618 | When we blow away the objfile the string table goes away as well. | |
c906108c SS |
619 | Note that gdb used to use the results of attempting to malloc the |
620 | string table, based on the size it read, as a form of sanity check | |
621 | for botched byte swapping, on the theory that a byte swapped string | |
622 | table size would be so totally bogus that the malloc would fail. Now | |
8b92e4d5 | 623 | that we put in on the objfile_obstack, we can't do this since gdb gets |
c906108c SS |
624 | a fatal error (out of virtual memory) if the size is bogus. We can |
625 | however at least check to see if the size is less than the size of | |
626 | the size field itself, or larger than the size of the entire file. | |
627 | Note that all valid string tables have a size greater than zero, since | |
0963b4bd | 628 | the bytes used to hold the size are included in the count. */ |
c906108c SS |
629 | |
630 | if (STRING_TABLE_OFFSET == 0) | |
631 | { | |
632 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET | |
c5aa993b | 633 | will never be zero, even when there is no string table. This |
0963b4bd | 634 | would appear to be a bug in bfd. */ |
c906108c SS |
635 | DBX_STRINGTAB_SIZE (objfile) = 0; |
636 | DBX_STRINGTAB (objfile) = NULL; | |
637 | } | |
638 | else | |
639 | { | |
640 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); | |
641 | if (val < 0) | |
642 | perror_with_name (name); | |
c5aa993b | 643 | |
4efb68b1 AC |
644 | memset (size_temp, 0, sizeof (size_temp)); |
645 | val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd); | |
c906108c SS |
646 | if (val < 0) |
647 | { | |
648 | perror_with_name (name); | |
649 | } | |
650 | else if (val == 0) | |
651 | { | |
652 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
653 | EOF if there is no string table, and attempting to read the size | |
0963b4bd | 654 | from EOF will read zero bytes. */ |
c906108c SS |
655 | DBX_STRINGTAB_SIZE (objfile) = 0; |
656 | DBX_STRINGTAB (objfile) = NULL; | |
657 | } | |
658 | else | |
659 | { | |
660 | /* Read some data that would appear to be the string table size. | |
661 | If there really is a string table, then it is probably the right | |
662 | size. Byteswap if necessary and validate the size. Note that | |
663 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
664 | random data that happened to be at STRING_TABLE_OFFSET, because | |
665 | bfd can't tell us there is no string table, the sanity checks may | |
0963b4bd | 666 | or may not catch this. */ |
c906108c | 667 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); |
c5aa993b | 668 | |
c906108c SS |
669 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) |
670 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
8a3fe4f8 | 671 | error (_("ridiculous string table size (%d bytes)."), |
c906108c | 672 | DBX_STRINGTAB_SIZE (objfile)); |
c5aa993b | 673 | |
c906108c | 674 | DBX_STRINGTAB (objfile) = |
8b92e4d5 | 675 | (char *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
676 | DBX_STRINGTAB_SIZE (objfile)); |
677 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); | |
c5aa993b | 678 | |
c906108c | 679 | /* Now read in the string table in one big gulp. */ |
c5aa993b | 680 | |
c906108c SS |
681 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
682 | if (val < 0) | |
683 | perror_with_name (name); | |
3a42e9d0 AM |
684 | val = bfd_bread (DBX_STRINGTAB (objfile), |
685 | DBX_STRINGTAB_SIZE (objfile), | |
686 | sym_bfd); | |
c906108c SS |
687 | if (val != DBX_STRINGTAB_SIZE (objfile)) |
688 | perror_with_name (name); | |
689 | } | |
690 | } | |
691 | } | |
692 | ||
693 | /* Perform any local cleanups required when we are done with a particular | |
694 | objfile. I.E, we are in the process of discarding all symbol information | |
695 | for an objfile, freeing up all memory held for it, and unlinking the | |
0963b4bd | 696 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
697 | |
698 | static void | |
fba45db2 | 699 | dbx_symfile_finish (struct objfile *objfile) |
c906108c | 700 | { |
d2f4b8fe TT |
701 | free_header_files (); |
702 | } | |
703 | ||
704 | static void | |
705 | dbx_free_symfile_info (struct objfile *objfile, void *arg) | |
706 | { | |
9a3c8263 | 707 | struct dbx_symfile_info *dbx = (struct dbx_symfile_info *) arg; |
d2f4b8fe TT |
708 | |
709 | if (dbx->header_files != NULL) | |
c906108c | 710 | { |
d2f4b8fe TT |
711 | int i = dbx->n_header_files; |
712 | struct header_file *hfiles = dbx->header_files; | |
c906108c | 713 | |
d2f4b8fe TT |
714 | while (--i >= 0) |
715 | { | |
716 | xfree (hfiles[i].name); | |
717 | xfree (hfiles[i].vector); | |
c906108c | 718 | } |
d2f4b8fe | 719 | xfree (hfiles); |
c906108c | 720 | } |
d2f4b8fe TT |
721 | |
722 | xfree (dbx); | |
c906108c | 723 | } |
d2f4b8fe | 724 | |
c906108c | 725 | \f |
c5aa993b | 726 | |
c906108c SS |
727 | /* Buffer for reading the symbol table entries. */ |
728 | static struct external_nlist symbuf[4096]; | |
729 | static int symbuf_idx; | |
730 | static int symbuf_end; | |
731 | ||
c906108c SS |
732 | /* Name of last function encountered. Used in Solaris to approximate |
733 | object file boundaries. */ | |
a121b7c1 | 734 | static const char *last_function_name; |
c906108c SS |
735 | |
736 | /* The address in memory of the string table of the object file we are | |
737 | reading (which might not be the "main" object file, but might be a | |
738 | shared library or some other dynamically loaded thing). This is | |
739 | set by read_dbx_symtab when building psymtabs, and by | |
740 | read_ofile_symtab when building symtabs, and is used only by | |
741 | next_symbol_text. FIXME: If that is true, we don't need it when | |
742 | building psymtabs, right? */ | |
743 | static char *stringtab_global; | |
744 | ||
745 | /* These variables are used to control fill_symbuf when the stabs | |
746 | symbols are not contiguous (as may be the case when a COFF file is | |
747 | linked using --split-by-reloc). */ | |
748 | static struct stab_section_list *symbuf_sections; | |
749 | static unsigned int symbuf_left; | |
750 | static unsigned int symbuf_read; | |
751 | ||
086df311 DJ |
752 | /* This variable stores a global stabs buffer, if we read stabs into |
753 | memory in one chunk in order to process relocations. */ | |
754 | static bfd_byte *stabs_data; | |
755 | ||
c906108c SS |
756 | /* Refill the symbol table input buffer |
757 | and set the variables that control fetching entries from it. | |
758 | Reports an error if no data available. | |
759 | This function can read past the end of the symbol table | |
760 | (into the string table) but this does no harm. */ | |
761 | ||
762 | static void | |
fba45db2 | 763 | fill_symbuf (bfd *sym_bfd) |
c906108c SS |
764 | { |
765 | unsigned int count; | |
766 | int nbytes; | |
767 | ||
086df311 DJ |
768 | if (stabs_data) |
769 | { | |
770 | nbytes = sizeof (symbuf); | |
771 | if (nbytes > symbuf_left) | |
772 | nbytes = symbuf_left; | |
773 | memcpy (symbuf, stabs_data + symbuf_read, nbytes); | |
774 | } | |
775 | else if (symbuf_sections == NULL) | |
776 | { | |
777 | count = sizeof (symbuf); | |
778 | nbytes = bfd_bread (symbuf, count, sym_bfd); | |
779 | } | |
c906108c SS |
780 | else |
781 | { | |
782 | if (symbuf_left <= 0) | |
783 | { | |
784 | file_ptr filepos = symbuf_sections->section->filepos; | |
9a619af0 | 785 | |
c906108c SS |
786 | if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0) |
787 | perror_with_name (bfd_get_filename (sym_bfd)); | |
788 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section); | |
789 | symbol_table_offset = filepos - symbuf_read; | |
790 | symbuf_sections = symbuf_sections->next; | |
791 | } | |
792 | ||
793 | count = symbuf_left; | |
794 | if (count > sizeof (symbuf)) | |
795 | count = sizeof (symbuf); | |
086df311 | 796 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
c906108c SS |
797 | } |
798 | ||
c906108c SS |
799 | if (nbytes < 0) |
800 | perror_with_name (bfd_get_filename (sym_bfd)); | |
801 | else if (nbytes == 0) | |
8a3fe4f8 | 802 | error (_("Premature end of file reading symbol table")); |
c906108c SS |
803 | symbuf_end = nbytes / symbol_size; |
804 | symbuf_idx = 0; | |
805 | symbuf_left -= nbytes; | |
806 | symbuf_read += nbytes; | |
807 | } | |
808 | ||
086df311 DJ |
809 | static void |
810 | stabs_seek (int sym_offset) | |
811 | { | |
812 | if (stabs_data) | |
813 | { | |
814 | symbuf_read += sym_offset; | |
815 | symbuf_left -= sym_offset; | |
816 | } | |
817 | else | |
818 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); | |
819 | } | |
820 | ||
c906108c SS |
821 | #define INTERNALIZE_SYMBOL(intern, extern, abfd) \ |
822 | { \ | |
c906108c | 823 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \ |
83b94be5 AM |
824 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \ |
825 | (intern).n_other = 0; \ | |
c906108c | 826 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \ |
40b3352b L |
827 | if (bfd_get_sign_extend_vma (abfd)) \ |
828 | (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \ | |
829 | else \ | |
830 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \ | |
c906108c SS |
831 | } |
832 | ||
833 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
834 | that hasn't been swapped. Swap the symbol at the same time | |
835 | that symbuf_idx is incremented. */ | |
836 | ||
837 | /* dbx allows the text of a symbol name to be continued into the | |
838 | next symbol name! When such a continuation is encountered | |
839 | (a \ at the end of the text of a name) | |
840 | call this function to get the continuation. */ | |
841 | ||
a121b7c1 | 842 | static const char * |
fba45db2 | 843 | dbx_next_symbol_text (struct objfile *objfile) |
c906108c SS |
844 | { |
845 | struct internal_nlist nlist; | |
846 | ||
847 | if (symbuf_idx == symbuf_end) | |
848 | fill_symbuf (symfile_bfd); | |
849 | ||
850 | symnum++; | |
c5aa993b | 851 | INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], symfile_bfd); |
c906108c SS |
852 | OBJSTAT (objfile, n_stabs++); |
853 | ||
854 | symbuf_idx++; | |
855 | ||
856 | return nlist.n_strx + stringtab_global + file_string_table_offset; | |
857 | } | |
858 | \f | |
859 | /* Initialize the list of bincls to contain none and have some | |
860 | allocated. */ | |
861 | ||
862 | static void | |
fba45db2 | 863 | init_bincl_list (int number, struct objfile *objfile) |
c906108c SS |
864 | { |
865 | bincls_allocated = number; | |
8d749320 SM |
866 | next_bincl = bincl_list = XNEWVEC (struct header_file_location, |
867 | bincls_allocated); | |
c906108c SS |
868 | } |
869 | ||
870 | /* Add a bincl to the list. */ | |
871 | ||
872 | static void | |
a121b7c1 | 873 | add_bincl_to_list (struct partial_symtab *pst, const char *name, int instance) |
c906108c SS |
874 | { |
875 | if (next_bincl >= bincl_list + bincls_allocated) | |
876 | { | |
877 | int offset = next_bincl - bincl_list; | |
9a619af0 | 878 | |
c906108c SS |
879 | bincls_allocated *= 2; |
880 | bincl_list = (struct header_file_location *) | |
0efffb96 AC |
881 | xrealloc ((char *) bincl_list, |
882 | bincls_allocated * sizeof (struct header_file_location)); | |
c906108c SS |
883 | next_bincl = bincl_list + offset; |
884 | } | |
885 | next_bincl->pst = pst; | |
886 | next_bincl->instance = instance; | |
887 | next_bincl++->name = name; | |
888 | } | |
889 | ||
890 | /* Given a name, value pair, find the corresponding | |
891 | bincl in the list. Return the partial symtab associated | |
892 | with that header_file_location. */ | |
893 | ||
894 | static struct partial_symtab * | |
a121b7c1 | 895 | find_corresponding_bincl_psymtab (const char *name, int instance) |
c906108c SS |
896 | { |
897 | struct header_file_location *bincl; | |
898 | ||
899 | for (bincl = bincl_list; bincl < next_bincl; bincl++) | |
900 | if (bincl->instance == instance | |
6314a349 | 901 | && strcmp (name, bincl->name) == 0) |
c906108c SS |
902 | return bincl->pst; |
903 | ||
23136709 | 904 | repeated_header_complaint (name, symnum); |
c906108c SS |
905 | return (struct partial_symtab *) 0; |
906 | } | |
907 | ||
908 | /* Free the storage allocated for the bincl list. */ | |
909 | ||
910 | static void | |
fba45db2 | 911 | free_bincl_list (struct objfile *objfile) |
c906108c | 912 | { |
2dc74dc1 | 913 | xfree (bincl_list); |
c906108c SS |
914 | bincls_allocated = 0; |
915 | } | |
916 | ||
74b7792f AC |
917 | static void |
918 | do_free_bincl_list_cleanup (void *objfile) | |
919 | { | |
9a3c8263 | 920 | free_bincl_list ((struct objfile *) objfile); |
74b7792f AC |
921 | } |
922 | ||
923 | static struct cleanup * | |
924 | make_cleanup_free_bincl_list (struct objfile *objfile) | |
925 | { | |
926 | return make_cleanup (do_free_bincl_list_cleanup, objfile); | |
927 | } | |
928 | ||
6a34fd2f EZ |
929 | /* Set namestring based on nlist. If the string table index is invalid, |
930 | give a fake name, and print a single error message per symbol file read, | |
931 | rather than abort the symbol reading or flood the user with messages. */ | |
932 | ||
a121b7c1 | 933 | static const char * |
83b94be5 | 934 | set_namestring (struct objfile *objfile, const struct internal_nlist *nlist) |
6a34fd2f | 935 | { |
a121b7c1 | 936 | const char *namestring; |
6a34fd2f | 937 | |
5409dacf JK |
938 | if (nlist->n_strx + file_string_table_offset |
939 | >= DBX_STRINGTAB_SIZE (objfile) | |
940 | || nlist->n_strx + file_string_table_offset < nlist->n_strx) | |
6a34fd2f | 941 | { |
3e43a32a MS |
942 | complaint (&symfile_complaints, |
943 | _("bad string table offset in symbol %d"), | |
23136709 | 944 | symnum); |
6a34fd2f EZ |
945 | namestring = "<bad string table offset>"; |
946 | } | |
947 | else | |
83b94be5 AM |
948 | namestring = (nlist->n_strx + file_string_table_offset |
949 | + DBX_STRINGTAB (objfile)); | |
6a34fd2f EZ |
950 | return namestring; |
951 | } | |
952 | ||
a78f21af | 953 | static CORE_ADDR |
a121b7c1 | 954 | find_stab_function_addr (const char *namestring, const char *filename, |
4867e41e DM |
955 | struct objfile *objfile) |
956 | { | |
3b7344d5 | 957 | struct bound_minimal_symbol msym; |
4867e41e DM |
958 | int n; |
959 | ||
a121b7c1 PA |
960 | const char *colon = strchr (namestring, ':'); |
961 | if (colon == NULL) | |
962 | n = 0; | |
963 | else | |
964 | n = colon - namestring; | |
965 | ||
966 | char *p = (char *) alloca (n + 2); | |
4867e41e DM |
967 | strncpy (p, namestring, n); |
968 | p[n] = 0; | |
969 | ||
970 | msym = lookup_minimal_symbol (p, filename, objfile); | |
3b7344d5 | 971 | if (msym.minsym == NULL) |
4867e41e DM |
972 | { |
973 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
974 | try again with an appended underscore if the minimal symbol | |
975 | was not found. */ | |
976 | p[n] = '_'; | |
977 | p[n + 1] = 0; | |
978 | msym = lookup_minimal_symbol (p, filename, objfile); | |
979 | } | |
980 | ||
3b7344d5 | 981 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 982 | { |
0963b4bd | 983 | /* Try again without the filename. */ |
4867e41e DM |
984 | p[n] = 0; |
985 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
986 | } | |
3b7344d5 | 987 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 988 | { |
0963b4bd | 989 | /* And try again for Sun Fortran, but without the filename. */ |
4867e41e DM |
990 | p[n] = '_'; |
991 | p[n + 1] = 0; | |
992 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
993 | } | |
994 | ||
77e371c0 | 995 | return msym.minsym == NULL ? 0 : BMSYMBOL_VALUE_ADDRESS (msym); |
4867e41e | 996 | } |
4867e41e | 997 | |
23136709 KB |
998 | static void |
999 | function_outside_compilation_unit_complaint (const char *arg1) | |
1000 | { | |
1001 | complaint (&symfile_complaints, | |
3e43a32a MS |
1002 | _("function `%s' appears to be defined " |
1003 | "outside of all compilation units"), | |
23136709 KB |
1004 | arg1); |
1005 | } | |
1006 | ||
d4f3574e | 1007 | /* Setup partial_symtab's describing each source file for which |
0963b4bd | 1008 | debugging information is available. */ |
c906108c SS |
1009 | |
1010 | static void | |
8dddcb8f | 1011 | read_dbx_symtab (minimal_symbol_reader &reader, struct objfile *objfile) |
c906108c | 1012 | { |
5e2b427d | 1013 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0963b4bd | 1014 | struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch. */ |
c906108c | 1015 | struct internal_nlist nlist; |
d4f3574e SS |
1016 | CORE_ADDR text_addr; |
1017 | int text_size; | |
a121b7c1 | 1018 | const char *sym_name; |
71c25dea | 1019 | int sym_len; |
c906108c | 1020 | |
a121b7c1 | 1021 | const char *namestring; |
c906108c SS |
1022 | int nsl; |
1023 | int past_first_source_file = 0; | |
c906108c SS |
1024 | CORE_ADDR last_function_start = 0; |
1025 | struct cleanup *back_to; | |
1026 | bfd *abfd; | |
1027 | int textlow_not_set; | |
7c8a5605 | 1028 | int data_sect_index; |
c906108c | 1029 | |
0963b4bd | 1030 | /* Current partial symtab. */ |
c906108c SS |
1031 | struct partial_symtab *pst; |
1032 | ||
0963b4bd | 1033 | /* List of current psymtab's include files. */ |
0d5cff50 | 1034 | const char **psymtab_include_list; |
c906108c SS |
1035 | int includes_allocated; |
1036 | int includes_used; | |
1037 | ||
0963b4bd | 1038 | /* Index within current psymtab dependency list. */ |
c906108c SS |
1039 | struct partial_symtab **dependency_list; |
1040 | int dependencies_used, dependencies_allocated; | |
1041 | ||
d4f3574e SS |
1042 | text_addr = DBX_TEXT_ADDR (objfile); |
1043 | text_size = DBX_TEXT_SIZE (objfile); | |
1044 | ||
c906108c SS |
1045 | /* FIXME. We probably want to change stringtab_global rather than add this |
1046 | while processing every symbol entry. FIXME. */ | |
1047 | file_string_table_offset = 0; | |
1048 | next_file_string_table_offset = 0; | |
1049 | ||
1050 | stringtab_global = DBX_STRINGTAB (objfile); | |
c5aa993b | 1051 | |
c906108c SS |
1052 | pst = (struct partial_symtab *) 0; |
1053 | ||
1054 | includes_allocated = 30; | |
1055 | includes_used = 0; | |
0d5cff50 DE |
1056 | psymtab_include_list = (const char **) alloca (includes_allocated * |
1057 | sizeof (const char *)); | |
c906108c SS |
1058 | |
1059 | dependencies_allocated = 30; | |
1060 | dependencies_used = 0; | |
1061 | dependency_list = | |
1062 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1063 | sizeof (struct partial_symtab *)); | |
1064 | ||
1065 | /* Init bincl list */ | |
1066 | init_bincl_list (20, objfile); | |
74b7792f | 1067 | back_to = make_cleanup_free_bincl_list (objfile); |
c906108c | 1068 | |
46212e0b | 1069 | set_last_source_file (NULL); |
c906108c | 1070 | |
96baa820 | 1071 | lowest_text_address = (CORE_ADDR) -1; |
c906108c | 1072 | |
0963b4bd | 1073 | symfile_bfd = objfile->obfd; /* For next_text_symbol. */ |
c906108c SS |
1074 | abfd = objfile->obfd; |
1075 | symbuf_end = symbuf_idx = 0; | |
1076 | next_symbol_text_func = dbx_next_symbol_text; | |
1077 | textlow_not_set = 1; | |
1078 | has_line_numbers = 0; | |
1079 | ||
4f49b26b JB |
1080 | /* FIXME: jimb/2003-09-12: We don't apply the right section's offset |
1081 | to global and static variables. The stab for a global or static | |
1082 | variable doesn't give us any indication of which section it's in, | |
1083 | so we can't tell immediately which offset in | |
1084 | objfile->section_offsets we should apply to the variable's | |
1085 | address. | |
1086 | ||
1087 | We could certainly find out which section contains the variable | |
1088 | by looking up the variable's unrelocated address with | |
1089 | find_pc_section, but that would be expensive; this is the | |
1090 | function that constructs the partial symbol tables by examining | |
1091 | every symbol in the entire executable, and it's | |
1092 | performance-critical. So that expense would not be welcome. I'm | |
1093 | not sure what to do about this at the moment. | |
1094 | ||
1095 | What we have done for years is to simply assume that the .data | |
1096 | section's offset is appropriate for all global and static | |
1097 | variables. Recently, this was expanded to fall back to the .bss | |
1098 | section's offset if there is no .data section, and then to the | |
1099 | .rodata section's offset. */ | |
7c8a5605 JB |
1100 | data_sect_index = objfile->sect_index_data; |
1101 | if (data_sect_index == -1) | |
1102 | data_sect_index = SECT_OFF_BSS (objfile); | |
2a13f9bc JB |
1103 | if (data_sect_index == -1) |
1104 | data_sect_index = SECT_OFF_RODATA (objfile); | |
d646061f JB |
1105 | |
1106 | /* If data_sect_index is still -1, that's okay. It's perfectly fine | |
1107 | for the file to have no .data, no .bss, and no .text at all, if | |
1108 | it also has no global or static variables. If it does, we will | |
1109 | get an internal error from an ANOFFSET macro below when we try to | |
1110 | use data_sect_index. */ | |
7c8a5605 | 1111 | |
c906108c SS |
1112 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
1113 | { | |
0963b4bd MS |
1114 | /* Get the symbol for this run and pull out some info. */ |
1115 | QUIT; /* Allow this to be interruptable. */ | |
c906108c SS |
1116 | if (symbuf_idx == symbuf_end) |
1117 | fill_symbuf (abfd); | |
1118 | bufp = &symbuf[symbuf_idx++]; | |
1119 | ||
1120 | /* | |
1121 | * Special case to speed up readin. | |
1122 | */ | |
1123 | if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE) | |
1124 | { | |
1125 | has_line_numbers = 1; | |
1126 | continue; | |
1127 | } | |
1128 | ||
1129 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
1130 | OBJSTAT (objfile, n_stabs++); | |
1131 | ||
1132 | /* Ok. There is a lot of code duplicated in the rest of this | |
1133 | switch statement (for efficiency reasons). Since I don't | |
1134 | like duplicating code, I will do my penance here, and | |
1135 | describe the code which is duplicated: | |
1136 | ||
c5aa993b JM |
1137 | *) The assignment to namestring. |
1138 | *) The call to strchr. | |
b021a221 | 1139 | *) The addition of a partial symbol the two partial |
c5aa993b | 1140 | symbol lists. This last is a large section of code, so |
0963b4bd | 1141 | I've imbedded it in the following macro. */ |
c5aa993b | 1142 | |
6a34fd2f EZ |
1143 | switch (nlist.n_type) |
1144 | { | |
6a34fd2f EZ |
1145 | /* |
1146 | * Standard, external, non-debugger, symbols | |
1147 | */ | |
1148 | ||
9ce5d3bb DE |
1149 | case N_TEXT | N_EXT: |
1150 | case N_NBTEXT | N_EXT: | |
6a34fd2f EZ |
1151 | goto record_it; |
1152 | ||
9ce5d3bb DE |
1153 | case N_DATA | N_EXT: |
1154 | case N_NBDATA | N_EXT: | |
6a34fd2f EZ |
1155 | goto record_it; |
1156 | ||
9ce5d3bb DE |
1157 | case N_BSS: |
1158 | case N_BSS | N_EXT: | |
1159 | case N_NBBSS | N_EXT: | |
1160 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
6a34fd2f EZ |
1161 | goto record_it; |
1162 | ||
9ce5d3bb | 1163 | case N_ABS | N_EXT: |
6a34fd2f | 1164 | record_it: |
83b94be5 | 1165 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1166 | |
8dddcb8f | 1167 | record_minimal_symbol (reader, namestring, nlist.n_value, |
6a34fd2f EZ |
1168 | nlist.n_type, objfile); /* Always */ |
1169 | continue; | |
1170 | ||
0963b4bd | 1171 | /* Standard, local, non-debugger, symbols. */ |
6a34fd2f | 1172 | |
9ce5d3bb | 1173 | case N_NBTEXT: |
6a34fd2f EZ |
1174 | |
1175 | /* We need to be able to deal with both N_FN or N_TEXT, | |
1176 | because we have no way of knowing whether the sys-supplied ld | |
1177 | or GNU ld was used to make the executable. Sequents throw | |
1178 | in another wrinkle -- they renumbered N_FN. */ | |
1179 | ||
9ce5d3bb DE |
1180 | case N_FN: |
1181 | case N_FN_SEQ: | |
1182 | case N_TEXT: | |
83b94be5 | 1183 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1184 | |
1185 | if ((namestring[0] == '-' && namestring[1] == 'l') | |
1186 | || (namestring[(nsl = strlen (namestring)) - 1] == 'o' | |
1187 | && namestring[nsl - 2] == '.')) | |
9ce5d3bb | 1188 | { |
2273f0ac TT |
1189 | nlist.n_value += ANOFFSET (objfile->section_offsets, |
1190 | SECT_OFF_TEXT (objfile)); | |
1191 | ||
9ce5d3bb DE |
1192 | if (past_first_source_file && pst |
1193 | /* The gould NP1 uses low values for .o and -l symbols | |
1194 | which are not the address. */ | |
1195 | && nlist.n_value >= pst->textlow) | |
1196 | { | |
8763cede DE |
1197 | dbx_end_psymtab (objfile, pst, psymtab_include_list, |
1198 | includes_used, symnum * symbol_size, | |
1199 | nlist.n_value > pst->texthigh | |
1200 | ? nlist.n_value : pst->texthigh, | |
1201 | dependency_list, dependencies_used, | |
1202 | textlow_not_set); | |
9ce5d3bb DE |
1203 | pst = (struct partial_symtab *) 0; |
1204 | includes_used = 0; | |
1205 | dependencies_used = 0; | |
578933ab | 1206 | has_line_numbers = 0; |
9ce5d3bb DE |
1207 | } |
1208 | else | |
1209 | past_first_source_file = 1; | |
9ce5d3bb | 1210 | } |
6a34fd2f | 1211 | else |
9ce5d3bb | 1212 | goto record_it; |
6a34fd2f EZ |
1213 | continue; |
1214 | ||
9ce5d3bb | 1215 | case N_DATA: |
6a34fd2f EZ |
1216 | goto record_it; |
1217 | ||
9ce5d3bb | 1218 | case N_UNDF | N_EXT: |
d4862372 JB |
1219 | /* The case (nlist.n_value != 0) is a "Fortran COMMON" symbol. |
1220 | We used to rely on the target to tell us whether it knows | |
1221 | where the symbol has been relocated to, but none of the | |
1222 | target implementations actually provided that operation. | |
1223 | So we just ignore the symbol, the same way we would do if | |
1224 | we had a target-side symbol lookup which returned no match. | |
1225 | ||
1226 | All other symbols (with nlist.n_value == 0), are really | |
1227 | undefined, and so we ignore them too. */ | |
1228 | continue; | |
6a34fd2f | 1229 | |
9ce5d3bb | 1230 | case N_UNDF: |
6a34fd2f | 1231 | if (processing_acc_compilation && nlist.n_strx == 1) |
9ce5d3bb DE |
1232 | { |
1233 | /* Deal with relative offsets in the string table | |
1234 | used in ELF+STAB under Solaris. If we want to use the | |
1235 | n_strx field, which contains the name of the file, | |
1236 | we must adjust file_string_table_offset *before* calling | |
1237 | set_namestring(). */ | |
1238 | past_first_source_file = 1; | |
1239 | file_string_table_offset = next_file_string_table_offset; | |
1240 | next_file_string_table_offset = | |
1241 | file_string_table_offset + nlist.n_value; | |
1242 | if (next_file_string_table_offset < file_string_table_offset) | |
1243 | error (_("string table offset backs up at %d"), symnum); | |
1244 | /* FIXME -- replace error() with complaint. */ | |
1245 | continue; | |
1246 | } | |
6a34fd2f EZ |
1247 | continue; |
1248 | ||
1249 | /* Lots of symbol types we can just ignore. */ | |
1250 | ||
9ce5d3bb DE |
1251 | case N_ABS: |
1252 | case N_NBDATA: | |
1253 | case N_NBBSS: | |
6a34fd2f EZ |
1254 | continue; |
1255 | ||
0963b4bd | 1256 | /* Keep going . . . */ |
6a34fd2f EZ |
1257 | |
1258 | /* | |
1259 | * Special symbol types for GNU | |
1260 | */ | |
9ce5d3bb DE |
1261 | case N_INDR: |
1262 | case N_INDR | N_EXT: | |
1263 | case N_SETA: | |
1264 | case N_SETA | N_EXT: | |
1265 | case N_SETT: | |
1266 | case N_SETT | N_EXT: | |
1267 | case N_SETD: | |
1268 | case N_SETD | N_EXT: | |
1269 | case N_SETB: | |
1270 | case N_SETB | N_EXT: | |
1271 | case N_SETV: | |
6a34fd2f EZ |
1272 | continue; |
1273 | ||
1274 | /* | |
1275 | * Debugger symbols | |
1276 | */ | |
1277 | ||
9ce5d3bb | 1278 | case N_SO: |
6a34fd2f EZ |
1279 | { |
1280 | CORE_ADDR valu; | |
1281 | static int prev_so_symnum = -10; | |
1282 | static int first_so_symnum; | |
0ba1096a | 1283 | const char *p; |
a121b7c1 | 1284 | static const char *dirname_nso; |
6a34fd2f EZ |
1285 | int prev_textlow_not_set; |
1286 | ||
063e58ba MD |
1287 | valu = nlist.n_value + ANOFFSET (objfile->section_offsets, |
1288 | SECT_OFF_TEXT (objfile)); | |
6a34fd2f EZ |
1289 | |
1290 | prev_textlow_not_set = textlow_not_set; | |
1291 | ||
6a34fd2f | 1292 | /* A zero value is probably an indication for the SunPRO 3.0 |
8763cede | 1293 | compiler. dbx_end_psymtab explicitly tests for zero, so |
6a34fd2f EZ |
1294 | don't relocate it. */ |
1295 | ||
203c3895 | 1296 | if (nlist.n_value == 0 |
5e2b427d | 1297 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
6a34fd2f EZ |
1298 | { |
1299 | textlow_not_set = 1; | |
1300 | valu = 0; | |
1301 | } | |
1302 | else | |
1303 | textlow_not_set = 0; | |
203c3895 | 1304 | |
6a34fd2f EZ |
1305 | past_first_source_file = 1; |
1306 | ||
1307 | if (prev_so_symnum != symnum - 1) | |
0963b4bd | 1308 | { /* Here if prev stab wasn't N_SO. */ |
6a34fd2f EZ |
1309 | first_so_symnum = symnum; |
1310 | ||
1311 | if (pst) | |
1312 | { | |
8763cede DE |
1313 | dbx_end_psymtab (objfile, pst, psymtab_include_list, |
1314 | includes_used, symnum * symbol_size, | |
1315 | valu > pst->texthigh | |
1316 | ? valu : pst->texthigh, | |
1317 | dependency_list, dependencies_used, | |
1318 | prev_textlow_not_set); | |
6a34fd2f EZ |
1319 | pst = (struct partial_symtab *) 0; |
1320 | includes_used = 0; | |
1321 | dependencies_used = 0; | |
578933ab | 1322 | has_line_numbers = 0; |
6a34fd2f EZ |
1323 | } |
1324 | } | |
1325 | ||
1326 | prev_so_symnum = symnum; | |
1327 | ||
0963b4bd | 1328 | /* End the current partial symtab and start a new one. */ |
6a34fd2f | 1329 | |
83b94be5 | 1330 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1331 | |
0963b4bd | 1332 | /* Null name means end of .o file. Don't start a new one. */ |
6a34fd2f EZ |
1333 | if (*namestring == '\000') |
1334 | continue; | |
1335 | ||
1336 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
1337 | The first one is a directory name; the second the file name. | |
1338 | If pst exists, is empty, and has a filename ending in '/', | |
0963b4bd | 1339 | we assume the previous N_SO was a directory name. */ |
6a34fd2f | 1340 | |
0ba1096a KT |
1341 | p = lbasename (namestring); |
1342 | if (p != namestring && *p == '\000') | |
57c22c6c BR |
1343 | { |
1344 | /* Save the directory name SOs locally, then save it into | |
0963b4bd | 1345 | the psymtab when it's created below. */ |
57c22c6c BR |
1346 | dirname_nso = namestring; |
1347 | continue; | |
1348 | } | |
6a34fd2f EZ |
1349 | |
1350 | /* Some other compilers (C++ ones in particular) emit useless | |
131fe1bb DE |
1351 | SOs for non-existant .c files. We ignore all subsequent SOs |
1352 | that immediately follow the first. */ | |
6a34fd2f EZ |
1353 | |
1354 | if (!pst) | |
57c22c6c | 1355 | { |
9ce5d3bb DE |
1356 | pst = start_psymtab (objfile, |
1357 | namestring, valu, | |
1358 | first_so_symnum * symbol_size, | |
af5bf4ad SM |
1359 | objfile->global_psymbols, |
1360 | objfile->static_psymbols); | |
57c22c6c BR |
1361 | pst->dirname = dirname_nso; |
1362 | dirname_nso = NULL; | |
1363 | } | |
6a34fd2f EZ |
1364 | continue; |
1365 | } | |
1366 | ||
9ce5d3bb | 1367 | case N_BINCL: |
6a34fd2f EZ |
1368 | { |
1369 | enum language tmp_language; | |
9a619af0 | 1370 | |
6a34fd2f EZ |
1371 | /* Add this bincl to the bincl_list for future EXCLs. No |
1372 | need to save the string; it'll be around until | |
0963b4bd | 1373 | read_dbx_symtab function returns. */ |
6a34fd2f | 1374 | |
83b94be5 | 1375 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1376 | tmp_language = deduce_language_from_filename (namestring); |
1377 | ||
1378 | /* Only change the psymtab's language if we've learned | |
1379 | something useful (eg. tmp_language is not language_unknown). | |
1380 | In addition, to match what start_subfile does, never change | |
1381 | from C++ to C. */ | |
1382 | if (tmp_language != language_unknown | |
1383 | && (tmp_language != language_c | |
1384 | || psymtab_language != language_cplus)) | |
d7f98cce | 1385 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1386 | |
1387 | if (pst == NULL) | |
9ce5d3bb DE |
1388 | { |
1389 | /* FIXME: we should not get here without a PST to work on. | |
1390 | Attempt to recover. */ | |
1391 | complaint (&symfile_complaints, | |
3e43a32a MS |
1392 | _("N_BINCL %s not in entries for " |
1393 | "any file, at symtab pos %d"), | |
9ce5d3bb DE |
1394 | namestring, symnum); |
1395 | continue; | |
1396 | } | |
6a34fd2f EZ |
1397 | add_bincl_to_list (pst, namestring, nlist.n_value); |
1398 | ||
0963b4bd | 1399 | /* Mark down an include file in the current psymtab. */ |
6a34fd2f EZ |
1400 | |
1401 | goto record_include_file; | |
1402 | } | |
1403 | ||
9ce5d3bb | 1404 | case N_SOL: |
6a34fd2f EZ |
1405 | { |
1406 | enum language tmp_language; | |
6a34fd2f | 1407 | |
0963b4bd | 1408 | /* Mark down an include file in the current psymtab. */ |
83b94be5 | 1409 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1410 | tmp_language = deduce_language_from_filename (namestring); |
1411 | ||
1412 | /* Only change the psymtab's language if we've learned | |
1413 | something useful (eg. tmp_language is not language_unknown). | |
1414 | In addition, to match what start_subfile does, never change | |
1415 | from C++ to C. */ | |
1416 | if (tmp_language != language_unknown | |
1417 | && (tmp_language != language_c | |
1418 | || psymtab_language != language_cplus)) | |
d7f98cce | 1419 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1420 | |
1421 | /* In C++, one may expect the same filename to come round many | |
1422 | times, when code is coming alternately from the main file | |
0963b4bd | 1423 | and from inline functions in other files. So I check to see |
6a34fd2f EZ |
1424 | if this is a file we've seen before -- either the main |
1425 | source file, or a previously included file. | |
1426 | ||
1427 | This seems to be a lot of time to be spending on N_SOL, but | |
1428 | things like "break c-exp.y:435" need to work (I | |
1429 | suppose the psymtab_include_list could be hashed or put | |
1430 | in a binary tree, if profiling shows this is a major hog). */ | |
0ba1096a | 1431 | if (pst && filename_cmp (namestring, pst->filename) == 0) |
9ce5d3bb | 1432 | continue; |
6a34fd2f | 1433 | { |
aa1ee363 | 1434 | int i; |
9a619af0 | 1435 | |
6a34fd2f | 1436 | for (i = 0; i < includes_used; i++) |
0ba1096a | 1437 | if (filename_cmp (namestring, psymtab_include_list[i]) == 0) |
6a34fd2f EZ |
1438 | { |
1439 | i = -1; | |
1440 | break; | |
1441 | } | |
1442 | if (i == -1) | |
1443 | continue; | |
1444 | } | |
1445 | ||
9ce5d3bb | 1446 | record_include_file: |
6a34fd2f EZ |
1447 | |
1448 | psymtab_include_list[includes_used++] = namestring; | |
1449 | if (includes_used >= includes_allocated) | |
9ce5d3bb | 1450 | { |
0d5cff50 | 1451 | const char **orig = psymtab_include_list; |
6a34fd2f | 1452 | |
0d5cff50 DE |
1453 | psymtab_include_list = (const char **) |
1454 | alloca ((includes_allocated *= 2) * sizeof (const char *)); | |
9ce5d3bb | 1455 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 1456 | includes_used * sizeof (const char *)); |
9ce5d3bb | 1457 | } |
6a34fd2f EZ |
1458 | continue; |
1459 | } | |
0963b4bd MS |
1460 | case N_LSYM: /* Typedef or automatic variable. */ |
1461 | case N_STSYM: /* Data seg var -- static. */ | |
9ce5d3bb DE |
1462 | case N_LCSYM: /* BSS " */ |
1463 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
1464 | case N_NBSTS: /* Gould nobase. */ | |
1465 | case N_NBLCS: /* symbols. */ | |
1466 | case N_FUN: | |
1467 | case N_GSYM: /* Global (extern) variable; can be | |
063e58ba | 1468 | data or bss (sigh FIXME). */ |
6a34fd2f EZ |
1469 | |
1470 | /* Following may probably be ignored; I'll leave them here | |
1471 | for now (until I do Pascal and Modula 2 extensions). */ | |
1472 | ||
9ce5d3bb | 1473 | case N_PC: /* I may or may not need this; I |
063e58ba | 1474 | suspect not. */ |
0963b4bd | 1475 | case N_M2C: /* I suspect that I can ignore this here. */ |
9ce5d3bb | 1476 | case N_SCOPE: /* Same. */ |
131fe1bb | 1477 | { |
a121b7c1 | 1478 | const char *p; |
6a34fd2f | 1479 | |
83b94be5 | 1480 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1481 | |
1482 | /* See if this is an end of function stab. */ | |
1483 | if (pst && nlist.n_type == N_FUN && *namestring == '\000') | |
9ce5d3bb DE |
1484 | { |
1485 | CORE_ADDR valu; | |
1486 | ||
1487 | /* It's value is the size (in bytes) of the function for | |
1488 | function relative stabs, or the address of the function's | |
1489 | end for old style stabs. */ | |
1490 | valu = nlist.n_value + last_function_start; | |
1491 | if (pst->texthigh == 0 || valu > pst->texthigh) | |
1492 | pst->texthigh = valu; | |
1493 | break; | |
1494 | } | |
6a34fd2f EZ |
1495 | |
1496 | p = (char *) strchr (namestring, ':'); | |
1497 | if (!p) | |
0963b4bd | 1498 | continue; /* Not a debugging symbol. */ |
6a34fd2f | 1499 | |
71c25dea | 1500 | sym_len = 0; |
87bc73ea | 1501 | sym_name = NULL; /* pacify "gcc -Werror" */ |
71c25dea TT |
1502 | if (psymtab_language == language_cplus) |
1503 | { | |
2f408ecb PA |
1504 | std::string name (namestring, p - namestring); |
1505 | std::string new_name = cp_canonicalize_string (name.c_str ()); | |
1506 | if (!new_name.empty ()) | |
1507 | { | |
1508 | sym_len = new_name.length (); | |
224c3ddb | 1509 | sym_name = (char *) obstack_copy0 (&objfile->objfile_obstack, |
2f408ecb PA |
1510 | new_name.c_str (), |
1511 | sym_len); | |
1512 | } | |
1513 | } | |
71c25dea TT |
1514 | |
1515 | if (sym_len == 0) | |
1516 | { | |
1517 | sym_name = namestring; | |
1518 | sym_len = p - namestring; | |
1519 | } | |
1520 | ||
6a34fd2f EZ |
1521 | /* Main processing section for debugging symbols which |
1522 | the initial read through the symbol tables needs to worry | |
1523 | about. If we reach this point, the symbol which we are | |
1524 | considering is definitely one we are interested in. | |
1525 | p must also contain the (valid) index into the namestring | |
1526 | which indicates the debugging type symbol. */ | |
1527 | ||
1528 | switch (p[1]) | |
9ce5d3bb DE |
1529 | { |
1530 | case 'S': | |
1531 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1532 | data_sect_index); | |
1533 | ||
5e2b427d | 1534 | if (gdbarch_static_transform_name_p (gdbarch)) |
e81cff30 | 1535 | gdbarch_static_transform_name (gdbarch, namestring); |
9ce5d3bb | 1536 | |
04a679b8 | 1537 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1538 | VAR_DOMAIN, LOC_STATIC, |
1539 | &objfile->static_psymbols, | |
1762568f | 1540 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1541 | continue; |
131fe1bb | 1542 | |
9ce5d3bb DE |
1543 | case 'G': |
1544 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1545 | data_sect_index); | |
1546 | /* The addresses in these entries are reported to be | |
0963b4bd | 1547 | wrong. See the code that reads 'G's for symtabs. */ |
04a679b8 | 1548 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1549 | VAR_DOMAIN, LOC_STATIC, |
1550 | &objfile->global_psymbols, | |
1762568f | 1551 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1552 | continue; |
6a34fd2f | 1553 | |
9ce5d3bb DE |
1554 | case 'T': |
1555 | /* When a 'T' entry is defining an anonymous enum, it | |
1556 | may have a name which is the empty string, or a | |
1557 | single space. Since they're not really defining a | |
1558 | symbol, those shouldn't go in the partial symbol | |
1559 | table. We do pick up the elements of such enums at | |
1560 | 'check_enum:', below. */ | |
1561 | if (p >= namestring + 2 | |
1562 | || (p == namestring + 1 | |
1563 | && namestring[0] != ' ')) | |
1564 | { | |
04a679b8 | 1565 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1566 | STRUCT_DOMAIN, LOC_TYPEDEF, |
1567 | &objfile->static_psymbols, | |
1762568f | 1568 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1569 | if (p[2] == 't') |
1570 | { | |
1571 | /* Also a typedef with the same name. */ | |
04a679b8 | 1572 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1573 | VAR_DOMAIN, LOC_TYPEDEF, |
1574 | &objfile->static_psymbols, | |
1762568f | 1575 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1576 | p += 1; |
1577 | } | |
1578 | } | |
1579 | goto check_enum; | |
131fe1bb | 1580 | |
9ce5d3bb | 1581 | case 't': |
0963b4bd | 1582 | if (p != namestring) /* a name is there, not just :T... */ |
9ce5d3bb | 1583 | { |
04a679b8 | 1584 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1585 | VAR_DOMAIN, LOC_TYPEDEF, |
1586 | &objfile->static_psymbols, | |
1762568f | 1587 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1588 | } |
1589 | check_enum: | |
1590 | /* If this is an enumerated type, we need to | |
1591 | add all the enum constants to the partial symbol | |
1592 | table. This does not cover enums without names, e.g. | |
1593 | "enum {a, b} c;" in C, but fortunately those are | |
1594 | rare. There is no way for GDB to find those from the | |
1595 | enum type without spending too much time on it. Thus | |
1596 | to solve this problem, the compiler needs to put out the | |
1597 | enum in a nameless type. GCC2 does this. */ | |
1598 | ||
1599 | /* We are looking for something of the form | |
1600 | <name> ":" ("t" | "T") [<number> "="] "e" | |
1601 | {<constant> ":" <value> ","} ";". */ | |
1602 | ||
1603 | /* Skip over the colon and the 't' or 'T'. */ | |
1604 | p += 2; | |
1605 | /* This type may be given a number. Also, numbers can come | |
1606 | in pairs like (0,26). Skip over it. */ | |
1607 | while ((*p >= '0' && *p <= '9') | |
1608 | || *p == '(' || *p == ',' || *p == ')' | |
1609 | || *p == '=') | |
1610 | p++; | |
1611 | ||
1612 | if (*p++ == 'e') | |
1613 | { | |
1614 | /* The aix4 compiler emits extra crud before the members. */ | |
1615 | if (*p == '-') | |
1616 | { | |
1617 | /* Skip over the type (?). */ | |
1618 | while (*p != ':') | |
1619 | p++; | |
6a34fd2f | 1620 | |
9ce5d3bb | 1621 | /* Skip over the colon. */ |
6a34fd2f | 1622 | p++; |
9ce5d3bb | 1623 | } |
6a34fd2f | 1624 | |
9ce5d3bb DE |
1625 | /* We have found an enumerated type. */ |
1626 | /* According to comments in read_enum_type | |
1627 | a comma could end it instead of a semicolon. | |
1628 | I don't know where that happens. | |
1629 | Accept either. */ | |
1630 | while (*p && *p != ';' && *p != ',') | |
1631 | { | |
a121b7c1 | 1632 | const char *q; |
9ce5d3bb DE |
1633 | |
1634 | /* Check for and handle cretinous dbx symbol name | |
1635 | continuation! */ | |
1636 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
1637 | p = next_symbol_text (objfile); | |
1638 | ||
1639 | /* Point to the character after the name | |
1640 | of the enum constant. */ | |
1641 | for (q = p; *q && *q != ':'; q++) | |
1642 | ; | |
1643 | /* Note that the value doesn't matter for | |
1644 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 1645 | add_psymbol_to_list (p, q - p, 1, |
9ce5d3bb DE |
1646 | VAR_DOMAIN, LOC_CONST, |
1647 | &objfile->static_psymbols, 0, | |
1762568f | 1648 | psymtab_language, objfile); |
9ce5d3bb DE |
1649 | /* Point past the name. */ |
1650 | p = q; | |
1651 | /* Skip over the value. */ | |
1652 | while (*p && *p != ',') | |
1653 | p++; | |
1654 | /* Advance past the comma. */ | |
1655 | if (*p) | |
1656 | p++; | |
1657 | } | |
1658 | } | |
1659 | continue; | |
131fe1bb | 1660 | |
9ce5d3bb DE |
1661 | case 'c': |
1662 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 1663 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb | 1664 | VAR_DOMAIN, LOC_CONST, |
1762568f DE |
1665 | &objfile->static_psymbols, 0, |
1666 | psymtab_language, objfile); | |
9ce5d3bb | 1667 | continue; |
6a34fd2f | 1668 | |
9ce5d3bb DE |
1669 | case 'f': |
1670 | if (! pst) | |
1671 | { | |
1672 | int name_len = p - namestring; | |
224c3ddb | 1673 | char *name = (char *) xmalloc (name_len + 1); |
9a619af0 | 1674 | |
9ce5d3bb DE |
1675 | memcpy (name, namestring, name_len); |
1676 | name[name_len] = '\0'; | |
1677 | function_outside_compilation_unit_complaint (name); | |
1678 | xfree (name); | |
1679 | } | |
1680 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1681 | SECT_OFF_TEXT (objfile)); | |
0963b4bd | 1682 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1683 | last_function_name = namestring; |
1684 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1685 | value for the bottom of the text seg in those cases. */ |
9ce5d3bb DE |
1686 | if (nlist.n_value == ANOFFSET (objfile->section_offsets, |
1687 | SECT_OFF_TEXT (objfile)) | |
5e2b427d | 1688 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1689 | { |
1690 | CORE_ADDR minsym_valu = | |
1691 | find_stab_function_addr (namestring, | |
1692 | pst ? pst->filename : NULL, | |
1693 | objfile); | |
9a619af0 | 1694 | |
9ce5d3bb DE |
1695 | /* find_stab_function_addr will return 0 if the minimal |
1696 | symbol wasn't found. (Unfortunately, this might also | |
1697 | be a valid address.) Anyway, if it *does* return 0, | |
1698 | it is likely that the value was set correctly to begin | |
0963b4bd | 1699 | with... */ |
9ce5d3bb DE |
1700 | if (minsym_valu != 0) |
1701 | nlist.n_value = minsym_valu; | |
1702 | } | |
1703 | if (pst && textlow_not_set | |
5e2b427d | 1704 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1705 | { |
1706 | pst->textlow = nlist.n_value; | |
1707 | textlow_not_set = 0; | |
1708 | } | |
1709 | /* End kludge. */ | |
1710 | ||
1711 | /* Keep track of the start of the last function so we | |
1712 | can handle end of function symbols. */ | |
1713 | last_function_start = nlist.n_value; | |
1714 | ||
1715 | /* In reordered executables this function may lie outside | |
1716 | the bounds created by N_SO symbols. If that's the case | |
1717 | use the address of this function as the low bound for | |
1718 | the partial symbol table. */ | |
1719 | if (pst | |
1720 | && (textlow_not_set | |
1721 | || (nlist.n_value < pst->textlow | |
1722 | && (nlist.n_value | |
1723 | != ANOFFSET (objfile->section_offsets, | |
1724 | SECT_OFF_TEXT (objfile)))))) | |
1725 | { | |
1726 | pst->textlow = nlist.n_value; | |
1727 | textlow_not_set = 0; | |
1728 | } | |
04a679b8 | 1729 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1730 | VAR_DOMAIN, LOC_BLOCK, |
1731 | &objfile->static_psymbols, | |
1762568f | 1732 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1733 | continue; |
6a34fd2f | 1734 | |
9ce5d3bb DE |
1735 | /* Global functions were ignored here, but now they |
1736 | are put into the global psymtab like one would expect. | |
1737 | They're also in the minimal symbol table. */ | |
1738 | case 'F': | |
1739 | if (! pst) | |
1740 | { | |
1741 | int name_len = p - namestring; | |
224c3ddb | 1742 | char *name = (char *) xmalloc (name_len + 1); |
9a619af0 | 1743 | |
9ce5d3bb DE |
1744 | memcpy (name, namestring, name_len); |
1745 | name[name_len] = '\0'; | |
1746 | function_outside_compilation_unit_complaint (name); | |
1747 | xfree (name); | |
1748 | } | |
1749 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1750 | SECT_OFF_TEXT (objfile)); | |
0963b4bd | 1751 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1752 | last_function_name = namestring; |
1753 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1754 | value for the bottom of the text seg in those cases. */ |
9ce5d3bb DE |
1755 | if (nlist.n_value == ANOFFSET (objfile->section_offsets, |
1756 | SECT_OFF_TEXT (objfile)) | |
5e2b427d | 1757 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1758 | { |
1759 | CORE_ADDR minsym_valu = | |
1760 | find_stab_function_addr (namestring, | |
1761 | pst ? pst->filename : NULL, | |
1762 | objfile); | |
9a619af0 | 1763 | |
9ce5d3bb DE |
1764 | /* find_stab_function_addr will return 0 if the minimal |
1765 | symbol wasn't found. (Unfortunately, this might also | |
1766 | be a valid address.) Anyway, if it *does* return 0, | |
1767 | it is likely that the value was set correctly to begin | |
0963b4bd | 1768 | with... */ |
9ce5d3bb DE |
1769 | if (minsym_valu != 0) |
1770 | nlist.n_value = minsym_valu; | |
1771 | } | |
1772 | if (pst && textlow_not_set | |
5e2b427d | 1773 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1774 | { |
1775 | pst->textlow = nlist.n_value; | |
1776 | textlow_not_set = 0; | |
1777 | } | |
1778 | /* End kludge. */ | |
1779 | ||
1780 | /* Keep track of the start of the last function so we | |
1781 | can handle end of function symbols. */ | |
1782 | last_function_start = nlist.n_value; | |
1783 | ||
1784 | /* In reordered executables this function may lie outside | |
1785 | the bounds created by N_SO symbols. If that's the case | |
1786 | use the address of this function as the low bound for | |
1787 | the partial symbol table. */ | |
1788 | if (pst | |
1789 | && (textlow_not_set | |
1790 | || (nlist.n_value < pst->textlow | |
1791 | && (nlist.n_value | |
1792 | != ANOFFSET (objfile->section_offsets, | |
1793 | SECT_OFF_TEXT (objfile)))))) | |
1794 | { | |
1795 | pst->textlow = nlist.n_value; | |
1796 | textlow_not_set = 0; | |
1797 | } | |
04a679b8 | 1798 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1799 | VAR_DOMAIN, LOC_BLOCK, |
1800 | &objfile->global_psymbols, | |
1762568f | 1801 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1802 | continue; |
6a34fd2f | 1803 | |
9ce5d3bb DE |
1804 | /* Two things show up here (hopefully); static symbols of |
1805 | local scope (static used inside braces) or extensions | |
1806 | of structure symbols. We can ignore both. */ | |
1807 | case 'V': | |
1808 | case '(': | |
1809 | case '0': | |
1810 | case '1': | |
1811 | case '2': | |
1812 | case '3': | |
1813 | case '4': | |
1814 | case '5': | |
1815 | case '6': | |
1816 | case '7': | |
1817 | case '8': | |
1818 | case '9': | |
1819 | case '-': | |
0963b4bd | 1820 | case '#': /* For symbol identification (used in live ranges). */ |
9ce5d3bb | 1821 | continue; |
6a34fd2f | 1822 | |
9ce5d3bb DE |
1823 | case ':': |
1824 | /* It is a C++ nested symbol. We don't need to record it | |
1825 | (I don't think); if we try to look up foo::bar::baz, | |
1826 | then symbols for the symtab containing foo should get | |
1827 | read in, I think. */ | |
1828 | /* Someone says sun cc puts out symbols like | |
1829 | /foo/baz/maclib::/usr/local/bin/maclib, | |
1830 | which would get here with a symbol type of ':'. */ | |
1831 | continue; | |
6a34fd2f | 1832 | |
9ce5d3bb DE |
1833 | default: |
1834 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
1835 | of a continued stab can show up here. The question is | |
1836 | whether they ever can mimic a normal stab--it would be | |
1837 | nice if not, since we certainly don't want to spend the | |
1838 | time searching to the end of every string looking for | |
1839 | a backslash. */ | |
6a34fd2f | 1840 | |
3e43a32a MS |
1841 | complaint (&symfile_complaints, |
1842 | _("unknown symbol descriptor `%c'"), | |
9ce5d3bb DE |
1843 | p[1]); |
1844 | ||
1845 | /* Ignore it; perhaps it is an extension that we don't | |
1846 | know about. */ | |
1847 | continue; | |
1848 | } | |
131fe1bb | 1849 | } |
6a34fd2f | 1850 | |
9ce5d3bb | 1851 | case N_EXCL: |
6a34fd2f | 1852 | |
83b94be5 | 1853 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1854 | |
1855 | /* Find the corresponding bincl and mark that psymtab on the | |
0963b4bd | 1856 | psymtab dependency list. */ |
6a34fd2f EZ |
1857 | { |
1858 | struct partial_symtab *needed_pst = | |
1859 | find_corresponding_bincl_psymtab (namestring, nlist.n_value); | |
1860 | ||
1861 | /* If this include file was defined earlier in this file, | |
1862 | leave it alone. */ | |
1863 | if (needed_pst == pst) | |
1864 | continue; | |
1865 | ||
1866 | if (needed_pst) | |
1867 | { | |
1868 | int i; | |
1869 | int found = 0; | |
1870 | ||
1871 | for (i = 0; i < dependencies_used; i++) | |
1872 | if (dependency_list[i] == needed_pst) | |
1873 | { | |
1874 | found = 1; | |
1875 | break; | |
1876 | } | |
1877 | ||
1878 | /* If it's already in the list, skip the rest. */ | |
1879 | if (found) | |
1880 | continue; | |
1881 | ||
1882 | dependency_list[dependencies_used++] = needed_pst; | |
1883 | if (dependencies_used >= dependencies_allocated) | |
1884 | { | |
1885 | struct partial_symtab **orig = dependency_list; | |
9a619af0 | 1886 | |
6a34fd2f EZ |
1887 | dependency_list = |
1888 | (struct partial_symtab **) | |
1889 | alloca ((dependencies_allocated *= 2) | |
1890 | * sizeof (struct partial_symtab *)); | |
4efb68b1 | 1891 | memcpy (dependency_list, orig, |
6a34fd2f EZ |
1892 | (dependencies_used |
1893 | * sizeof (struct partial_symtab *))); | |
1894 | #ifdef DEBUG_INFO | |
063e58ba | 1895 | fprintf_unfiltered (gdb_stderr, |
3e43a32a MS |
1896 | "Had to reallocate " |
1897 | "dependency list.\n"); | |
063e58ba MD |
1898 | fprintf_unfiltered (gdb_stderr, |
1899 | "New dependencies allocated: %d\n", | |
6a34fd2f EZ |
1900 | dependencies_allocated); |
1901 | #endif | |
1902 | } | |
1903 | } | |
1904 | } | |
1905 | continue; | |
1906 | ||
9ce5d3bb | 1907 | case N_ENDM: |
6a34fd2f | 1908 | /* Solaris 2 end of module, finish current partial symbol table. |
8763cede | 1909 | dbx_end_psymtab will set pst->texthigh to the proper value, which |
6a34fd2f EZ |
1910 | is necessary if a module compiled without debugging info |
1911 | follows this module. */ | |
5e2b427d | 1912 | if (pst && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1913 | { |
8763cede DE |
1914 | dbx_end_psymtab (objfile, pst, |
1915 | psymtab_include_list, includes_used, | |
1916 | symnum * symbol_size, | |
1917 | (CORE_ADDR) 0, dependency_list, | |
1918 | dependencies_used, textlow_not_set); | |
9ce5d3bb DE |
1919 | pst = (struct partial_symtab *) 0; |
1920 | includes_used = 0; | |
1921 | dependencies_used = 0; | |
578933ab | 1922 | has_line_numbers = 0; |
9ce5d3bb | 1923 | } |
6a34fd2f | 1924 | continue; |
c906108c | 1925 | |
9ce5d3bb | 1926 | case N_RBRAC: |
6a34fd2f EZ |
1927 | #ifdef HANDLE_RBRAC |
1928 | HANDLE_RBRAC (nlist.n_value); | |
1929 | continue; | |
1930 | #endif | |
9ce5d3bb DE |
1931 | case N_EINCL: |
1932 | case N_DSLINE: | |
1933 | case N_BSLINE: | |
1934 | case N_SSYM: /* Claim: Structure or union element. | |
063e58ba | 1935 | Hopefully, I can ignore this. */ |
0963b4bd | 1936 | case N_ENTRY: /* Alternate entry point; can ignore. */ |
9ce5d3bb DE |
1937 | case N_MAIN: /* Can definitely ignore this. */ |
1938 | case N_CATCH: /* These are GNU C++ extensions */ | |
0963b4bd | 1939 | case N_EHDECL: /* that can safely be ignored here. */ |
9ce5d3bb DE |
1940 | case N_LENG: |
1941 | case N_BCOMM: | |
1942 | case N_ECOMM: | |
1943 | case N_ECOML: | |
1944 | case N_FNAME: | |
1945 | case N_SLINE: | |
1946 | case N_RSYM: | |
1947 | case N_PSYM: | |
ec48dc8b PM |
1948 | case N_BNSYM: |
1949 | case N_ENSYM: | |
9ce5d3bb DE |
1950 | case N_LBRAC: |
1951 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
1952 | case N_DEFD: /* GNU Modula-2 */ | |
1953 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
1954 | ||
0963b4bd | 1955 | case N_OBJ: /* Useless types from Solaris. */ |
9ce5d3bb DE |
1956 | case N_OPT: |
1957 | case N_PATCH: | |
0963b4bd | 1958 | /* These symbols aren't interesting; don't worry about them. */ |
6a34fd2f EZ |
1959 | continue; |
1960 | ||
9ce5d3bb | 1961 | default: |
6a34fd2f EZ |
1962 | /* If we haven't found it yet, ignore it. It's probably some |
1963 | new type we don't know about yet. */ | |
bb599908 | 1964 | unknown_symtype_complaint (hex_string (nlist.n_type)); |
6a34fd2f EZ |
1965 | continue; |
1966 | } | |
c906108c SS |
1967 | } |
1968 | ||
1969 | /* If there's stuff to be cleaned up, clean it up. */ | |
c906108c SS |
1970 | if (pst) |
1971 | { | |
1972 | /* Don't set pst->texthigh lower than it already is. */ | |
1973 | CORE_ADDR text_end = | |
6a34fd2f | 1974 | (lowest_text_address == (CORE_ADDR) -1 |
063e58ba MD |
1975 | ? (text_addr + ANOFFSET (objfile->section_offsets, |
1976 | SECT_OFF_TEXT (objfile))) | |
6a34fd2f EZ |
1977 | : lowest_text_address) |
1978 | + text_size; | |
c906108c | 1979 | |
8763cede DE |
1980 | dbx_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
1981 | symnum * symbol_size, | |
1982 | text_end > pst->texthigh ? text_end : pst->texthigh, | |
1983 | dependency_list, dependencies_used, textlow_not_set); | |
c906108c SS |
1984 | } |
1985 | ||
1986 | do_cleanups (back_to); | |
1987 | } | |
1988 | ||
1989 | /* Allocate and partially fill a partial symtab. It will be | |
1990 | completely filled at the end of the symbol list. | |
1991 | ||
1992 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1993 | is the address relative to which its symbols are (incremental) or 0 | |
0963b4bd | 1994 | (normal). */ |
c906108c | 1995 | |
d4f3574e | 1996 | static struct partial_symtab * |
a121b7c1 | 1997 | start_psymtab (struct objfile *objfile, const char *filename, CORE_ADDR textlow, |
af5bf4ad SM |
1998 | int ldsymoff, std::vector<partial_symbol *> &global_psymbols, |
1999 | std::vector<partial_symbol *> &static_psymbols) | |
c906108c SS |
2000 | { |
2001 | struct partial_symtab *result = | |
18a94d75 | 2002 | start_psymtab_common (objfile, filename, textlow, |
af5bf4ad | 2003 | global_psymbols, static_psymbols); |
c906108c | 2004 | |
8d749320 SM |
2005 | result->read_symtab_private = |
2006 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 2007 | LDSYMOFF (result) = ldsymoff; |
257e7a09 | 2008 | result->read_symtab = dbx_read_symtab; |
c5aa993b JM |
2009 | SYMBOL_SIZE (result) = symbol_size; |
2010 | SYMBOL_OFFSET (result) = symbol_table_offset; | |
2011 | STRING_OFFSET (result) = string_table_offset; | |
2012 | FILE_STRING_OFFSET (result) = file_string_table_offset; | |
c906108c | 2013 | |
0963b4bd | 2014 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
2015 | psymtab_language = deduce_language_from_filename (filename); |
2016 | ||
2017 | return result; | |
2018 | } | |
2019 | ||
0963b4bd | 2020 | /* Close off the current usage of PST. |
c906108c SS |
2021 | Returns PST or NULL if the partial symtab was empty and thrown away. |
2022 | ||
2023 | FIXME: List variables and peculiarities of same. */ | |
2024 | ||
2025 | struct partial_symtab * | |
8763cede DE |
2026 | dbx_end_psymtab (struct objfile *objfile, struct partial_symtab *pst, |
2027 | const char **include_list, int num_includes, | |
2028 | int capping_symbol_offset, CORE_ADDR capping_text, | |
2029 | struct partial_symtab **dependency_list, | |
2030 | int number_dependencies, | |
2031 | int textlow_not_set) | |
c906108c SS |
2032 | { |
2033 | int i; | |
5e2b427d | 2034 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
2035 | |
2036 | if (capping_symbol_offset != -1) | |
c5aa993b | 2037 | LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst); |
5afc051b | 2038 | pst->texthigh = capping_text; |
c906108c | 2039 | |
c906108c SS |
2040 | /* Under Solaris, the N_SO symbols always have a value of 0, |
2041 | instead of the usual address of the .o file. Therefore, | |
2042 | we have to do some tricks to fill in texthigh and textlow. | |
6a34fd2f | 2043 | The first trick is: if we see a static |
c906108c SS |
2044 | or global function, and the textlow for the current pst |
2045 | is not set (ie: textlow_not_set), then we use that function's | |
2046 | address for the textlow of the pst. */ | |
2047 | ||
2048 | /* Now, to fill in texthigh, we remember the last function seen | |
6a34fd2f | 2049 | in the .o file. Also, there's a hack in |
c906108c SS |
2050 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field |
2051 | to here via the misc_info field. Therefore, we can fill in | |
2052 | a reliable texthigh by taking the address plus size of the | |
2053 | last function in the file. */ | |
2054 | ||
203c3895 | 2055 | if (pst->texthigh == 0 && last_function_name |
5e2b427d | 2056 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
c906108c | 2057 | { |
c906108c | 2058 | int n; |
3b7344d5 | 2059 | struct bound_minimal_symbol minsym; |
c906108c | 2060 | |
a121b7c1 PA |
2061 | const char *colon = strchr (last_function_name, ':'); |
2062 | if (colon == NULL) | |
2063 | n = 0; | |
2064 | else | |
2065 | n = colon - last_function_name; | |
2066 | char *p = (char *) alloca (n + 2); | |
c906108c SS |
2067 | strncpy (p, last_function_name, n); |
2068 | p[n] = 0; | |
c5aa993b | 2069 | |
c906108c | 2070 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
3b7344d5 | 2071 | if (minsym.minsym == NULL) |
c906108c SS |
2072 | { |
2073 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
2074 | try again with an appended underscore if the minimal symbol | |
2075 | was not found. */ | |
2076 | p[n] = '_'; | |
2077 | p[n + 1] = 0; | |
2078 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); | |
2079 | } | |
2080 | ||
3b7344d5 | 2081 | if (minsym.minsym) |
77e371c0 | 2082 | pst->texthigh = (BMSYMBOL_VALUE_ADDRESS (minsym) |
3b7344d5 | 2083 | + MSYMBOL_SIZE (minsym.minsym)); |
c906108c SS |
2084 | |
2085 | last_function_name = NULL; | |
2086 | } | |
2087 | ||
5e2b427d | 2088 | if (!gdbarch_sofun_address_maybe_missing (gdbarch)) |
203c3895 | 2089 | ; |
0963b4bd | 2090 | /* This test will be true if the last .o file is only data. */ |
203c3895 | 2091 | else if (textlow_not_set) |
5afc051b | 2092 | pst->textlow = pst->texthigh; |
c906108c SS |
2093 | else |
2094 | { | |
2095 | struct partial_symtab *p1; | |
2096 | ||
2097 | /* If we know our own starting text address, then walk through all other | |
c5aa993b JM |
2098 | psymtabs for this objfile, and if any didn't know their ending text |
2099 | address, set it to our starting address. Take care to not set our | |
2100 | own ending address to our starting address, nor to set addresses on | |
2101 | `dependency' files that have both textlow and texthigh zero. */ | |
c906108c SS |
2102 | |
2103 | ALL_OBJFILE_PSYMTABS (objfile, p1) | |
c5aa993b | 2104 | { |
5afc051b | 2105 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) |
c5aa993b | 2106 | { |
5afc051b | 2107 | p1->texthigh = pst->textlow; |
0963b4bd MS |
2108 | /* If this file has only data, then make textlow match |
2109 | texthigh. */ | |
5afc051b JB |
2110 | if (p1->textlow == 0) |
2111 | p1->textlow = p1->texthigh; | |
c5aa993b JM |
2112 | } |
2113 | } | |
c906108c SS |
2114 | } |
2115 | ||
2116 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
c906108c | 2117 | |
8763cede | 2118 | end_psymtab_common (objfile, pst); |
c906108c SS |
2119 | |
2120 | pst->number_of_dependencies = number_dependencies; | |
2121 | if (number_dependencies) | |
2122 | { | |
8d749320 SM |
2123 | pst->dependencies = XOBNEWVEC (&objfile->objfile_obstack, |
2124 | struct partial_symtab *, | |
2125 | number_dependencies); | |
c906108c | 2126 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2127 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2128 | } |
2129 | else | |
2130 | pst->dependencies = 0; | |
2131 | ||
2132 | for (i = 0; i < num_includes; i++) | |
2133 | { | |
2134 | struct partial_symtab *subpst = | |
9a619af0 | 2135 | allocate_psymtab (include_list[i], objfile); |
c906108c | 2136 | |
c906108c | 2137 | subpst->read_symtab_private = |
8d749320 | 2138 | XOBNEW (&objfile->objfile_obstack, struct symloc); |
c5aa993b JM |
2139 | LDSYMOFF (subpst) = |
2140 | LDSYMLEN (subpst) = | |
5afc051b JB |
2141 | subpst->textlow = |
2142 | subpst->texthigh = 0; | |
c906108c SS |
2143 | |
2144 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2145 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 SM |
2146 | subpst->dependencies = |
2147 | XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
c906108c SS |
2148 | subpst->dependencies[0] = pst; |
2149 | subpst->number_of_dependencies = 1; | |
2150 | ||
2151 | subpst->globals_offset = | |
2152 | subpst->n_global_syms = | |
c5aa993b JM |
2153 | subpst->statics_offset = |
2154 | subpst->n_static_syms = 0; | |
c906108c SS |
2155 | |
2156 | subpst->readin = 0; | |
43f3e411 | 2157 | subpst->compunit_symtab = 0; |
c906108c SS |
2158 | subpst->read_symtab = pst->read_symtab; |
2159 | } | |
2160 | ||
c906108c SS |
2161 | if (num_includes == 0 |
2162 | && number_dependencies == 0 | |
2163 | && pst->n_global_syms == 0 | |
2164 | && pst->n_static_syms == 0 | |
2165 | && has_line_numbers == 0) | |
2166 | { | |
2167 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2168 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2169 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b JM |
2170 | any symbols in them. There can be a lot of them. But this check |
2171 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
2172 | is not empty, but we don't realize that. Fixing that without slowing | |
2173 | things down might be tricky. */ | |
c906108c | 2174 | |
5c80ed9d | 2175 | discard_psymtab (objfile, pst); |
c906108c SS |
2176 | |
2177 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2178 | pst = NULL; |
c906108c SS |
2179 | } |
2180 | return pst; | |
2181 | } | |
2182 | \f | |
2183 | static void | |
5c80ed9d | 2184 | dbx_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 2185 | { |
c906108c | 2186 | int i; |
c5aa993b | 2187 | |
c906108c SS |
2188 | if (pst->readin) |
2189 | { | |
0963b4bd MS |
2190 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. " |
2191 | "Shouldn't happen.\n", | |
c5aa993b | 2192 | pst->filename); |
c906108c SS |
2193 | return; |
2194 | } | |
2195 | ||
0963b4bd | 2196 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
2197 | for (i = 0; i < pst->number_of_dependencies; i++) |
2198 | if (!pst->dependencies[i]->readin) | |
2199 | { | |
2200 | /* Inform about additional files that need to be read in. */ | |
2201 | if (info_verbose) | |
2202 | { | |
2203 | fputs_filtered (" ", gdb_stdout); | |
2204 | wrap_here (""); | |
2205 | fputs_filtered ("and ", gdb_stdout); | |
2206 | wrap_here (""); | |
2207 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 2208 | wrap_here (""); /* Flush output. */ |
c906108c SS |
2209 | gdb_flush (gdb_stdout); |
2210 | } | |
5c80ed9d | 2211 | dbx_psymtab_to_symtab_1 (objfile, pst->dependencies[i]); |
c906108c SS |
2212 | } |
2213 | ||
0963b4bd | 2214 | if (LDSYMLEN (pst)) /* Otherwise it's a dummy. */ |
c906108c SS |
2215 | { |
2216 | /* Init stuff necessary for reading in symbols */ | |
2217 | stabsread_init (); | |
2218 | buildsym_init (); | |
33c7c59d | 2219 | scoped_free_pendings free_pending; |
c906108c SS |
2220 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
2221 | symbol_size = SYMBOL_SIZE (pst); | |
2222 | ||
0963b4bd | 2223 | /* Read in this file's symbols. */ |
5c80ed9d TT |
2224 | bfd_seek (objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); |
2225 | read_ofile_symtab (objfile, pst); | |
c906108c SS |
2226 | } |
2227 | ||
2228 | pst->readin = 1; | |
2229 | } | |
2230 | ||
2231 | /* Read in all of the symbols for a given psymtab for real. | |
257e7a09 | 2232 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
2233 | |
2234 | static void | |
257e7a09 | 2235 | dbx_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 2236 | { |
257e7a09 | 2237 | if (self->readin) |
c906108c | 2238 | { |
0963b4bd MS |
2239 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. " |
2240 | "Shouldn't happen.\n", | |
257e7a09 | 2241 | self->filename); |
c906108c SS |
2242 | return; |
2243 | } | |
2244 | ||
257e7a09 | 2245 | if (LDSYMLEN (self) || self->number_of_dependencies) |
c906108c | 2246 | { |
57cee33a TT |
2247 | struct cleanup *back_to; |
2248 | ||
c906108c | 2249 | /* Print the message now, before reading the string table, |
c5aa993b | 2250 | to avoid disconcerting pauses. */ |
c906108c SS |
2251 | if (info_verbose) |
2252 | { | |
257e7a09 | 2253 | printf_filtered ("Reading in symbols for %s...", self->filename); |
c906108c SS |
2254 | gdb_flush (gdb_stdout); |
2255 | } | |
2256 | ||
c906108c SS |
2257 | next_symbol_text_func = dbx_next_symbol_text; |
2258 | ||
57cee33a TT |
2259 | back_to = make_cleanup (null_cleanup, NULL); |
2260 | ||
5c80ed9d | 2261 | if (DBX_STAB_SECTION (objfile)) |
086df311 DJ |
2262 | { |
2263 | stabs_data | |
5c80ed9d TT |
2264 | = symfile_relocate_debug_section (objfile, |
2265 | DBX_STAB_SECTION (objfile), | |
086df311 | 2266 | NULL); |
9a619af0 | 2267 | |
086df311 | 2268 | if (stabs_data) |
57cee33a | 2269 | make_cleanup (free_current_contents, (void *) &stabs_data); |
086df311 DJ |
2270 | } |
2271 | ||
257e7a09 | 2272 | dbx_psymtab_to_symtab_1 (objfile, self); |
c906108c | 2273 | |
57cee33a | 2274 | do_cleanups (back_to); |
086df311 | 2275 | |
c906108c SS |
2276 | /* Match with global symbols. This only needs to be done once, |
2277 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 2278 | scan_file_globals (objfile); |
c906108c SS |
2279 | |
2280 | /* Finish up the debug error message. */ | |
2281 | if (info_verbose) | |
2282 | printf_filtered ("done.\n"); | |
2283 | } | |
2284 | } | |
2285 | ||
0963b4bd | 2286 | /* Read in a defined section of a specific object file's symbols. */ |
c5aa993b | 2287 | |
c906108c | 2288 | static void |
5c80ed9d | 2289 | read_ofile_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 2290 | { |
a121b7c1 | 2291 | const char *namestring; |
52f0bd74 | 2292 | struct external_nlist *bufp; |
c906108c SS |
2293 | struct internal_nlist nlist; |
2294 | unsigned char type; | |
2295 | unsigned max_symnum; | |
52f0bd74 | 2296 | bfd *abfd; |
c906108c SS |
2297 | int sym_offset; /* Offset to start of symbols to read */ |
2298 | int sym_size; /* Size of symbols to read */ | |
2299 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
2300 | int text_size; /* Size of text segment for symbols */ | |
2301 | struct section_offsets *section_offsets; | |
2302 | ||
c5aa993b JM |
2303 | sym_offset = LDSYMOFF (pst); |
2304 | sym_size = LDSYMLEN (pst); | |
5afc051b JB |
2305 | text_offset = pst->textlow; |
2306 | text_size = pst->texthigh - pst->textlow; | |
18a94d75 | 2307 | section_offsets = objfile->section_offsets; |
c906108c | 2308 | |
dd707e8e | 2309 | dbxread_objfile = objfile; |
c906108c SS |
2310 | |
2311 | stringtab_global = DBX_STRINGTAB (objfile); | |
46212e0b | 2312 | set_last_source_file (NULL); |
c906108c SS |
2313 | |
2314 | abfd = objfile->obfd; | |
0963b4bd | 2315 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol. */ |
c906108c | 2316 | symbuf_end = symbuf_idx = 0; |
086df311 DJ |
2317 | symbuf_read = 0; |
2318 | symbuf_left = sym_offset + sym_size; | |
c906108c SS |
2319 | |
2320 | /* It is necessary to actually read one symbol *before* the start | |
2321 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
2322 | occurs before the N_SO symbol. | |
2323 | ||
2324 | Detecting this in read_dbx_symtab | |
2325 | would slow down initial readin, so we look for it here instead. */ | |
c5aa993b | 2326 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c | 2327 | { |
086df311 | 2328 | stabs_seek (sym_offset - symbol_size); |
c906108c SS |
2329 | fill_symbuf (abfd); |
2330 | bufp = &symbuf[symbuf_idx++]; | |
2331 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2332 | OBJSTAT (objfile, n_stabs++); | |
2333 | ||
83b94be5 | 2334 | namestring = set_namestring (objfile, &nlist); |
c906108c SS |
2335 | |
2336 | processing_gcc_compilation = 0; | |
2337 | if (nlist.n_type == N_TEXT) | |
2338 | { | |
2339 | const char *tempstring = namestring; | |
2340 | ||
91f54576 | 2341 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2342 | processing_gcc_compilation = 1; |
91f54576 | 2343 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2344 | processing_gcc_compilation = 2; |
2345 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) | |
2346 | ++tempstring; | |
61012eef | 2347 | if (startswith (tempstring, "__gnu_compiled")) |
c906108c SS |
2348 | processing_gcc_compilation = 2; |
2349 | } | |
c906108c SS |
2350 | } |
2351 | else | |
2352 | { | |
2353 | /* The N_SO starting this symtab is the first symbol, so we | |
c5aa993b JM |
2354 | better not check the symbol before it. I'm not this can |
2355 | happen, but it doesn't hurt to check for it. */ | |
086df311 | 2356 | stabs_seek (sym_offset); |
c906108c SS |
2357 | processing_gcc_compilation = 0; |
2358 | } | |
2359 | ||
2360 | if (symbuf_idx == symbuf_end) | |
2361 | fill_symbuf (abfd); | |
2362 | bufp = &symbuf[symbuf_idx]; | |
2363 | if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO) | |
8a3fe4f8 | 2364 | error (_("First symbol in segment of executable not a source symbol")); |
c906108c SS |
2365 | |
2366 | max_symnum = sym_size / symbol_size; | |
2367 | ||
2368 | for (symnum = 0; | |
2369 | symnum < max_symnum; | |
2370 | symnum++) | |
2371 | { | |
0963b4bd | 2372 | QUIT; /* Allow this to be interruptable. */ |
c906108c | 2373 | if (symbuf_idx == symbuf_end) |
c5aa993b | 2374 | fill_symbuf (abfd); |
c906108c SS |
2375 | bufp = &symbuf[symbuf_idx++]; |
2376 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2377 | OBJSTAT (objfile, n_stabs++); | |
2378 | ||
2379 | type = bfd_h_get_8 (abfd, bufp->e_type); | |
2380 | ||
83b94be5 | 2381 | namestring = set_namestring (objfile, &nlist); |
c906108c | 2382 | |
c5aa993b JM |
2383 | if (type & N_STAB) |
2384 | { | |
7b1f21e5 PP |
2385 | if (sizeof (nlist.n_value) > 4 |
2386 | /* We are a 64-bit debugger debugging a 32-bit program. */ | |
2387 | && (type == N_LSYM || type == N_PSYM)) | |
2388 | /* We have to be careful with the n_value in the case of N_LSYM | |
2389 | and N_PSYM entries, because they are signed offsets from frame | |
2390 | pointer, but we actually read them as unsigned 32-bit values. | |
2391 | This is not a problem for 32-bit debuggers, for which negative | |
2392 | values end up being interpreted correctly (as negative | |
2393 | offsets) due to integer overflow. | |
2394 | But we need to sign-extend the value for 64-bit debuggers, | |
2395 | or we'll end up interpreting negative values as very large | |
2396 | positive offsets. */ | |
2397 | nlist.n_value = (nlist.n_value ^ 0x80000000) - 0x80000000; | |
c906108c SS |
2398 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
2399 | namestring, section_offsets, objfile); | |
c5aa993b | 2400 | } |
c906108c | 2401 | /* We skip checking for a new .o or -l file; that should never |
0963b4bd | 2402 | happen in this routine. */ |
c906108c SS |
2403 | else if (type == N_TEXT) |
2404 | { | |
2405 | /* I don't think this code will ever be executed, because | |
2406 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
2407 | the N_SO symbol which starts this source file. | |
2408 | However, there is no reason not to accept | |
2409 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
2410 | ||
91f54576 | 2411 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2412 | processing_gcc_compilation = 1; |
91f54576 | 2413 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2414 | processing_gcc_compilation = 2; |
c906108c | 2415 | } |
c5aa993b | 2416 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
9a619af0 | 2417 | || type == (unsigned char) N_NBTEXT) |
c5aa993b | 2418 | { |
c906108c SS |
2419 | /* Global symbol: see if we came across a dbx defintion for |
2420 | a corresponding symbol. If so, store the value. Remove | |
2421 | syms from the chain when their values are stored, but | |
2422 | search the whole chain, as there may be several syms from | |
0963b4bd | 2423 | different files with the same name. */ |
c906108c SS |
2424 | /* This is probably not true. Since the files will be read |
2425 | in one at a time, each reference to a global symbol will | |
0963b4bd MS |
2426 | be satisfied in each file as it appears. So we skip this |
2427 | section. */ | |
c906108c | 2428 | ; |
c5aa993b | 2429 | } |
c906108c SS |
2430 | } |
2431 | ||
c906108c SS |
2432 | /* In a Solaris elf file, this variable, which comes from the |
2433 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
0963b4bd | 2434 | which comes from pst->textlow is correct. */ |
c906108c SS |
2435 | if (last_source_start_addr == 0) |
2436 | last_source_start_addr = text_offset; | |
2437 | ||
2438 | /* In reordered executables last_source_start_addr may not be the | |
2439 | lower bound for this symtab, instead use text_offset which comes | |
5afc051b | 2440 | from pst->textlow which is correct. */ |
c906108c SS |
2441 | if (last_source_start_addr > text_offset) |
2442 | last_source_start_addr = text_offset; | |
2443 | ||
43f3e411 DE |
2444 | pst->compunit_symtab = end_symtab (text_offset + text_size, |
2445 | SECT_OFF_TEXT (objfile)); | |
c906108c | 2446 | |
c906108c | 2447 | end_stabs (); |
e9112110 | 2448 | |
dd707e8e | 2449 | dbxread_objfile = NULL; |
c906108c | 2450 | } |
c906108c | 2451 | \f |
c5aa993b | 2452 | |
195a3f6c TT |
2453 | /* Record the namespace that the function defined by SYMBOL was |
2454 | defined in, if necessary. BLOCK is the associated block; use | |
2455 | OBSTACK for allocation. */ | |
2456 | ||
2457 | static void | |
2458 | cp_set_block_scope (const struct symbol *symbol, | |
2459 | struct block *block, | |
2460 | struct obstack *obstack) | |
2461 | { | |
2462 | if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) | |
2463 | { | |
2464 | /* Try to figure out the appropriate namespace from the | |
2465 | demangled name. */ | |
2466 | ||
2467 | /* FIXME: carlton/2003-04-15: If the function in question is | |
2468 | a method of a class, the name will actually include the | |
2469 | name of the class as well. This should be harmless, but | |
2470 | is a little unfortunate. */ | |
2471 | ||
2472 | const char *name = SYMBOL_DEMANGLED_NAME (symbol); | |
2473 | unsigned int prefix_len = cp_entire_prefix_len (name); | |
2474 | ||
2475 | block_set_scope (block, | |
224c3ddb | 2476 | (const char *) obstack_copy0 (obstack, name, prefix_len), |
195a3f6c TT |
2477 | obstack); |
2478 | } | |
2479 | } | |
2480 | ||
c906108c SS |
2481 | /* This handles a single symbol from the symbol-file, building symbols |
2482 | into a GDB symtab. It takes these arguments and an implicit argument. | |
2483 | ||
2484 | TYPE is the type field of the ".stab" symbol entry. | |
2485 | DESC is the desc field of the ".stab" entry. | |
2486 | VALU is the value field of the ".stab" entry. | |
2487 | NAME is the symbol name, in our address space. | |
e31272c3 MK |
2488 | SECTION_OFFSETS is a set of amounts by which the sections of this |
2489 | object file were relocated when it was loaded into memory. Note | |
2490 | that these section_offsets are not the objfile->section_offsets but | |
2491 | the pst->section_offsets. All symbols that refer to memory | |
2492 | locations need to be offset by these amounts. | |
2493 | OBJFILE is the object file from which we are reading symbols. It | |
2494 | is used in end_symtab. */ | |
c906108c SS |
2495 | |
2496 | void | |
a121b7c1 | 2497 | process_one_symbol (int type, int desc, CORE_ADDR valu, const char *name, |
3189cb12 | 2498 | const struct section_offsets *section_offsets, |
fba45db2 | 2499 | struct objfile *objfile) |
c906108c | 2500 | { |
5e2b427d | 2501 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 2502 | struct context_stack *newobj; |
e31272c3 MK |
2503 | /* This remembers the address of the start of a function. It is |
2504 | used because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries | |
2505 | are relative to the current function's start address. On systems | |
2506 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, | |
2507 | and is used to relocate these symbol types rather than | |
2508 | SECTION_OFFSETS. */ | |
c906108c SS |
2509 | static CORE_ADDR function_start_offset; |
2510 | ||
e31272c3 MK |
2511 | /* This holds the address of the start of a function, without the |
2512 | system peculiarities of function_start_offset. */ | |
a1b9830c DJ |
2513 | static CORE_ADDR last_function_start; |
2514 | ||
54c7009d EZ |
2515 | /* If this is nonzero, we've seen an N_SLINE since the start of the |
2516 | current function. We use this to tell us to move the first sline | |
2517 | to the beginning of the function regardless of what its given | |
0963b4bd | 2518 | value is. */ |
a1b9830c DJ |
2519 | static int sline_found_in_function = 1; |
2520 | ||
e31272c3 MK |
2521 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this |
2522 | source file. Used to detect the SunPRO solaris compiler. */ | |
c906108c SS |
2523 | static int n_opt_found; |
2524 | ||
e31272c3 MK |
2525 | /* Something is wrong if we see real data before seeing a source |
2526 | file name. */ | |
c906108c | 2527 | |
46212e0b | 2528 | if (get_last_source_file () == NULL && type != (unsigned char) N_SO) |
c906108c SS |
2529 | { |
2530 | /* Ignore any symbols which appear before an N_SO symbol. | |
c5aa993b JM |
2531 | Currently no one puts symbols there, but we should deal |
2532 | gracefully with the case. A complain()t might be in order, | |
2533 | but this should not be an error (). */ | |
c906108c SS |
2534 | return; |
2535 | } | |
2536 | ||
2537 | switch (type) | |
2538 | { | |
2539 | case N_FUN: | |
2540 | case N_FNAME: | |
2541 | ||
2542 | if (*name == '\000') | |
2543 | { | |
e31272c3 MK |
2544 | /* This N_FUN marks the end of a function. This closes off |
2545 | the current block. */ | |
df8a16a1 | 2546 | struct block *block; |
0c5e171a KD |
2547 | |
2548 | if (context_stack_depth <= 0) | |
2549 | { | |
23136709 | 2550 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2551 | break; |
2552 | } | |
2553 | ||
6b37567a JJ |
2554 | /* The following check is added before recording line 0 at |
2555 | end of function so as to handle hand-generated stabs | |
e31272c3 MK |
2556 | which may have an N_FUN stabs at the end of the function, |
2557 | but no N_SLINE stabs. */ | |
6b37567a | 2558 | if (sline_found_in_function) |
fbf65064 UW |
2559 | { |
2560 | CORE_ADDR addr = last_function_start + valu; | |
9a619af0 | 2561 | |
fbf65064 UW |
2562 | record_line (current_subfile, 0, |
2563 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
2564 | } | |
6b37567a | 2565 | |
c906108c | 2566 | within_function = 0; |
fe978cb0 | 2567 | newobj = pop_context (); |
c906108c SS |
2568 | |
2569 | /* Make a block for the local symbols within. */ | |
fe978cb0 | 2570 | block = finish_block (newobj->name, &local_symbols, |
63e43d3a | 2571 | newobj->old_blocks, NULL, |
fe978cb0 | 2572 | newobj->start_addr, newobj->start_addr + valu); |
df8a16a1 DJ |
2573 | |
2574 | /* For C++, set the block's scope. */ | |
fe978cb0 PA |
2575 | if (SYMBOL_LANGUAGE (newobj->name) == language_cplus) |
2576 | cp_set_block_scope (newobj->name, block, &objfile->objfile_obstack); | |
c906108c SS |
2577 | |
2578 | /* May be switching to an assembler file which may not be using | |
2579 | block relative stabs, so reset the offset. */ | |
1736a7bd | 2580 | function_start_offset = 0; |
c906108c SS |
2581 | |
2582 | break; | |
2583 | } | |
2584 | ||
a1b9830c DJ |
2585 | sline_found_in_function = 0; |
2586 | ||
e31272c3 | 2587 | /* Relocate for dynamic loading. */ |
b8fbeb18 | 2588 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
85ddcc70 | 2589 | valu = gdbarch_addr_bits_remove (gdbarch, valu); |
a1b9830c DJ |
2590 | last_function_start = valu; |
2591 | ||
c906108c SS |
2592 | goto define_a_symbol; |
2593 | ||
2594 | case N_LBRAC: | |
2595 | /* This "symbol" just indicates the start of an inner lexical | |
c5aa993b | 2596 | context within a function. */ |
c906108c SS |
2597 | |
2598 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2599 | if (n_opt_found && desc == 1) | |
2600 | break; | |
2601 | ||
1736a7bd | 2602 | valu += function_start_offset; |
c906108c | 2603 | |
ab8b8aca | 2604 | push_context (desc, valu); |
c906108c SS |
2605 | break; |
2606 | ||
2607 | case N_RBRAC: | |
2608 | /* This "symbol" just indicates the end of an inner lexical | |
c5aa993b | 2609 | context that was started with N_LBRAC. */ |
c906108c SS |
2610 | |
2611 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2612 | if (n_opt_found && desc == 1) | |
2613 | break; | |
2614 | ||
1736a7bd | 2615 | valu += function_start_offset; |
c906108c | 2616 | |
0c5e171a KD |
2617 | if (context_stack_depth <= 0) |
2618 | { | |
23136709 | 2619 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2620 | break; |
2621 | } | |
2622 | ||
fe978cb0 PA |
2623 | newobj = pop_context (); |
2624 | if (desc != newobj->depth) | |
23136709 | 2625 | lbrac_mismatch_complaint (symnum); |
c906108c | 2626 | |
35156bae | 2627 | if (local_symbols != NULL) |
1f077a3e | 2628 | { |
35156bae DJ |
2629 | /* GCC development snapshots from March to December of |
2630 | 2000 would output N_LSYM entries after N_LBRAC | |
2631 | entries. As a consequence, these symbols are simply | |
2632 | discarded. Complain if this is the case. */ | |
3e43a32a MS |
2633 | complaint (&symfile_complaints, |
2634 | _("misplaced N_LBRAC entry; discarding local " | |
2635 | "symbols which have no enclosing block")); | |
1f077a3e | 2636 | } |
fe978cb0 | 2637 | local_symbols = newobj->locals; |
c906108c | 2638 | |
35156bae | 2639 | if (context_stack_depth > 1) |
c906108c | 2640 | { |
e31272c3 MK |
2641 | /* This is not the outermost LBRAC...RBRAC pair in the |
2642 | function, its local symbols preceded it, and are the ones | |
2643 | just recovered from the context stack. Define the block | |
2644 | for them (but don't bother if the block contains no | |
2645 | symbols. Should we complain on blocks without symbols? | |
2646 | I can't think of any useful purpose for them). */ | |
c906108c SS |
2647 | if (local_symbols != NULL) |
2648 | { | |
e31272c3 MK |
2649 | /* Muzzle a compiler bug that makes end < start. |
2650 | ||
2651 | ??? Which compilers? Is this ever harmful?. */ | |
fe978cb0 | 2652 | if (newobj->start_addr > valu) |
c906108c | 2653 | { |
23136709 | 2654 | complaint (&symfile_complaints, |
e2e0b3e5 | 2655 | _("block start larger than block end")); |
fe978cb0 | 2656 | newobj->start_addr = valu; |
c906108c SS |
2657 | } |
2658 | /* Make a block for the local symbols within. */ | |
63e43d3a | 2659 | finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 2660 | newobj->start_addr, valu); |
c906108c SS |
2661 | } |
2662 | } | |
2663 | else | |
2664 | { | |
2665 | /* This is the outermost LBRAC...RBRAC pair. There is no | |
2666 | need to do anything; leave the symbols that preceded it | |
2667 | to be attached to the function's own block. We need to | |
2668 | indicate that we just moved outside of the function. */ | |
2669 | within_function = 0; | |
2670 | } | |
2671 | ||
c906108c SS |
2672 | break; |
2673 | ||
2674 | case N_FN: | |
2675 | case N_FN_SEQ: | |
e31272c3 MK |
2676 | /* This kind of symbol indicates the start of an object file. |
2677 | Relocate for dynamic loading. */ | |
b8fbeb18 | 2678 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2679 | break; |
2680 | ||
2681 | case N_SO: | |
e31272c3 MK |
2682 | /* This type of symbol indicates the start of data for one |
2683 | source file. Finish the symbol table of the previous source | |
2684 | file (if any) and start accumulating a new symbol table. | |
2685 | Relocate for dynamic loading. */ | |
b8fbeb18 | 2686 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2687 | |
2688 | n_opt_found = 0; | |
2689 | ||
46212e0b | 2690 | if (get_last_source_file ()) |
c906108c SS |
2691 | { |
2692 | /* Check if previous symbol was also an N_SO (with some | |
e31272c3 MK |
2693 | sanity checks). If so, that one was actually the |
2694 | directory name, and the current one is the real file | |
0963b4bd | 2695 | name. Patch things up. */ |
c906108c SS |
2696 | if (previous_stab_code == (unsigned char) N_SO) |
2697 | { | |
2698 | patch_subfile_names (current_subfile, name); | |
0963b4bd | 2699 | break; /* Ignore repeated SOs. */ |
c906108c | 2700 | } |
4d663531 | 2701 | end_symtab (valu, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2702 | end_stabs (); |
2703 | } | |
2704 | ||
e31272c3 MK |
2705 | /* Null name means this just marks the end of text for this .o |
2706 | file. Don't start a new symtab in this case. */ | |
c906108c SS |
2707 | if (*name == '\000') |
2708 | break; | |
2709 | ||
1736a7bd | 2710 | function_start_offset = 0; |
c906108c SS |
2711 | |
2712 | start_stabs (); | |
4d663531 | 2713 | start_symtab (objfile, name, NULL, valu); |
c906108c SS |
2714 | record_debugformat ("stabs"); |
2715 | break; | |
2716 | ||
2717 | case N_SOL: | |
e31272c3 MK |
2718 | /* This type of symbol indicates the start of data for a |
2719 | sub-source-file, one whose contents were copied or included | |
2720 | in the compilation of the main source file (whose name was | |
2721 | given in the N_SO symbol). Relocate for dynamic loading. */ | |
b8fbeb18 | 2722 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
4d663531 | 2723 | start_subfile (name); |
c906108c SS |
2724 | break; |
2725 | ||
2726 | case N_BINCL: | |
2727 | push_subfile (); | |
2728 | add_new_header_file (name, valu); | |
4d663531 | 2729 | start_subfile (name); |
c906108c SS |
2730 | break; |
2731 | ||
2732 | case N_EINCL: | |
4d663531 | 2733 | start_subfile (pop_subfile ()); |
c906108c SS |
2734 | break; |
2735 | ||
2736 | case N_EXCL: | |
2737 | add_old_header_file (name, valu); | |
2738 | break; | |
2739 | ||
2740 | case N_SLINE: | |
e31272c3 MK |
2741 | /* This type of "symbol" really just records one line-number -- |
2742 | core-address correspondence. Enter it in the line list for | |
2743 | this symbol table. */ | |
c906108c | 2744 | |
e31272c3 MK |
2745 | /* Relocate for dynamic loading and for ELF acc |
2746 | function-relative symbols. */ | |
c906108c SS |
2747 | valu += function_start_offset; |
2748 | ||
ceddaf06 MK |
2749 | /* GCC 2.95.3 emits the first N_SLINE stab somwehere in the |
2750 | middle of the prologue instead of right at the start of the | |
2751 | function. To deal with this we record the address for the | |
2752 | first N_SLINE stab to be the start of the function instead of | |
2753 | the listed location. We really shouldn't to this. When | |
2754 | compiling with optimization, this first N_SLINE stab might be | |
2755 | optimized away. Other (non-GCC) compilers don't emit this | |
2756 | stab at all. There is no real harm in having an extra | |
2757 | numbered line, although it can be a bit annoying for the | |
2758 | user. However, it totally screws up our testsuite. | |
2759 | ||
2760 | So for now, keep adjusting the address of the first N_SLINE | |
2761 | stab, but only for code compiled with GCC. */ | |
2762 | ||
a1b9830c DJ |
2763 | if (within_function && sline_found_in_function == 0) |
2764 | { | |
fbf65064 UW |
2765 | CORE_ADDR addr = processing_gcc_compilation == 2 ? |
2766 | last_function_start : valu; | |
9a619af0 | 2767 | |
fbf65064 UW |
2768 | record_line (current_subfile, desc, |
2769 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
a1b9830c DJ |
2770 | sline_found_in_function = 1; |
2771 | } | |
2772 | else | |
fbf65064 UW |
2773 | record_line (current_subfile, desc, |
2774 | gdbarch_addr_bits_remove (gdbarch, valu)); | |
c906108c SS |
2775 | break; |
2776 | ||
2777 | case N_BCOMM: | |
2778 | common_block_start (name, objfile); | |
2779 | break; | |
2780 | ||
2781 | case N_ECOMM: | |
2782 | common_block_end (objfile); | |
2783 | break; | |
2784 | ||
e31272c3 MK |
2785 | /* The following symbol types need to have the appropriate |
2786 | offset added to their value; then we process symbol | |
2787 | definitions in the name. */ | |
c906108c | 2788 | |
e31272c3 MK |
2789 | case N_STSYM: /* Static symbol in data segment. */ |
2790 | case N_LCSYM: /* Static symbol in BSS segment. */ | |
2791 | case N_ROSYM: /* Static symbol in read-only data segment. */ | |
c5aa993b | 2792 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
e31272c3 MK |
2793 | Solaris 2's stabs-in-elf makes *most* symbols relative but |
2794 | leaves a few absolute (at least for Solaris 2.1 and version | |
2795 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on | |
2796 | the fence. .stab "foo:S...",N_STSYM is absolute (ld | |
2797 | relocates it) .stab "foo:V...",N_STSYM is relative (section | |
2798 | base subtracted). This leaves us no choice but to search for | |
2799 | the 'S' or 'V'... (or pass the whole section_offsets stuff | |
2800 | down ONE MORE function call level, which we really don't want | |
2801 | to do). */ | |
c906108c | 2802 | { |
a121b7c1 | 2803 | const char *p; |
c906108c | 2804 | |
e31272c3 MK |
2805 | /* Normal object file and NLMs have non-zero text seg offsets, |
2806 | but don't need their static syms offset in this fashion. | |
2807 | XXX - This is really a crock that should be fixed in the | |
2808 | solib handling code so that I don't have to work around it | |
2809 | here. */ | |
c906108c SS |
2810 | |
2811 | if (!symfile_relocatable) | |
2812 | { | |
2813 | p = strchr (name, ':'); | |
2814 | if (p != 0 && p[1] == 'S') | |
2815 | { | |
18a94d75 DE |
2816 | /* The linker relocated it. We don't want to add a |
2817 | Sun-stabs Tfoo.foo-like offset, but we *do* | |
e31272c3 MK |
2818 | want to add whatever solib.c passed to |
2819 | symbol_file_add as addr (this is known to affect | |
18a94d75 DE |
2820 | SunOS 4, and I suspect ELF too). Since there is no |
2821 | Ttext.text symbol, we can get addr from the text offset. */ | |
b8fbeb18 | 2822 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2823 | goto define_a_symbol; |
2824 | } | |
2825 | } | |
e31272c3 MK |
2826 | /* Since it's not the kludge case, re-dispatch to the right |
2827 | handler. */ | |
c5aa993b JM |
2828 | switch (type) |
2829 | { | |
2830 | case N_STSYM: | |
2831 | goto case_N_STSYM; | |
2832 | case N_LCSYM: | |
2833 | goto case_N_LCSYM; | |
2834 | case N_ROSYM: | |
2835 | goto case_N_ROSYM; | |
2836 | default: | |
e31272c3 | 2837 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2838 | _("failed internal consistency check")); |
c5aa993b | 2839 | } |
c906108c SS |
2840 | } |
2841 | ||
e31272c3 MK |
2842 | case_N_STSYM: /* Static symbol in data segment. */ |
2843 | case N_DSLINE: /* Source line number, data segment. */ | |
b8fbeb18 | 2844 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
2845 | goto define_a_symbol; |
2846 | ||
e31272c3 MK |
2847 | case_N_LCSYM: /* Static symbol in BSS segment. */ |
2848 | case N_BSLINE: /* Source line number, BSS segment. */ | |
2849 | /* N_BROWS: overlaps with N_BSLINE. */ | |
b8fbeb18 | 2850 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
2851 | goto define_a_symbol; |
2852 | ||
e31272c3 | 2853 | case_N_ROSYM: /* Static symbol in read-only data segment. */ |
b8fbeb18 | 2854 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA (objfile)); |
c906108c SS |
2855 | goto define_a_symbol; |
2856 | ||
e31272c3 MK |
2857 | case N_ENTRY: /* Alternate entry point. */ |
2858 | /* Relocate for dynamic loading. */ | |
b8fbeb18 | 2859 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2860 | goto define_a_symbol; |
2861 | ||
e31272c3 MK |
2862 | /* The following symbol types we don't know how to process. |
2863 | Handle them in a "default" way, but complain to people who | |
2864 | care. */ | |
c906108c | 2865 | default: |
e31272c3 MK |
2866 | case N_CATCH: /* Exception handler catcher. */ |
2867 | case N_EHDECL: /* Exception handler name. */ | |
2868 | case N_PC: /* Global symbol in Pascal. */ | |
2869 | case N_M2C: /* Modula-2 compilation unit. */ | |
2870 | /* N_MOD2: overlaps with N_EHDECL. */ | |
2871 | case N_SCOPE: /* Modula-2 scope information. */ | |
2872 | case N_ECOML: /* End common (local name). */ | |
2873 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
c906108c SS |
2874 | case N_NBDATA: |
2875 | case N_NBBSS: | |
2876 | case N_NBSTS: | |
2877 | case N_NBLCS: | |
bb599908 | 2878 | unknown_symtype_complaint (hex_string (type)); |
c906108c SS |
2879 | /* FALLTHROUGH */ |
2880 | ||
e31272c3 MK |
2881 | /* The following symbol types don't need the address field |
2882 | relocated, since it is either unused, or is absolute. */ | |
c906108c | 2883 | define_a_symbol: |
e31272c3 MK |
2884 | case N_GSYM: /* Global variable. */ |
2885 | case N_NSYMS: /* Number of symbols (Ultrix). */ | |
2886 | case N_NOMAP: /* No map? (Ultrix). */ | |
2887 | case N_RSYM: /* Register variable. */ | |
2888 | case N_DEFD: /* Modula-2 GNU module dependency. */ | |
2889 | case N_SSYM: /* Struct or union element. */ | |
2890 | case N_LSYM: /* Local symbol in stack. */ | |
2891 | case N_PSYM: /* Parameter variable. */ | |
2892 | case N_LENG: /* Length of preceding symbol type. */ | |
c906108c SS |
2893 | if (name) |
2894 | { | |
2895 | int deftype; | |
a121b7c1 | 2896 | const char *colon_pos = strchr (name, ':'); |
9a619af0 | 2897 | |
c906108c SS |
2898 | if (colon_pos == NULL) |
2899 | deftype = '\0'; | |
2900 | else | |
2901 | deftype = colon_pos[1]; | |
2902 | ||
2903 | switch (deftype) | |
2904 | { | |
2905 | case 'f': | |
2906 | case 'F': | |
e31272c3 MK |
2907 | /* Deal with the SunPRO 3.0 compiler which omits the |
2908 | address from N_FUN symbols. */ | |
c906108c | 2909 | if (type == N_FUN |
e31272c3 | 2910 | && valu == ANOFFSET (section_offsets, |
203c3895 | 2911 | SECT_OFF_TEXT (objfile)) |
5e2b427d | 2912 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9a058a09 KB |
2913 | { |
2914 | CORE_ADDR minsym_valu = | |
46212e0b TT |
2915 | find_stab_function_addr (name, get_last_source_file (), |
2916 | objfile); | |
9a058a09 | 2917 | |
e31272c3 MK |
2918 | /* The function find_stab_function_addr will return |
2919 | 0 if the minimal symbol wasn't found. | |
2920 | (Unfortunately, this might also be a valid | |
2921 | address.) Anyway, if it *does* return 0, it is | |
2922 | likely that the value was set correctly to begin | |
2923 | with... */ | |
9a058a09 KB |
2924 | if (minsym_valu != 0) |
2925 | valu = minsym_valu; | |
2926 | } | |
c906108c | 2927 | |
1736a7bd PA |
2928 | /* These addresses are absolute. */ |
2929 | function_start_offset = valu; | |
c906108c SS |
2930 | |
2931 | within_function = 1; | |
c3f6f71d JM |
2932 | |
2933 | if (context_stack_depth > 1) | |
2934 | { | |
23136709 | 2935 | complaint (&symfile_complaints, |
063e58ba MD |
2936 | _("unmatched N_LBRAC before symtab pos %d"), |
2937 | symnum); | |
c3f6f71d JM |
2938 | break; |
2939 | } | |
2940 | ||
c906108c SS |
2941 | if (context_stack_depth > 0) |
2942 | { | |
df8a16a1 DJ |
2943 | struct block *block; |
2944 | ||
fe978cb0 | 2945 | newobj = pop_context (); |
c906108c | 2946 | /* Make a block for the local symbols within. */ |
fe978cb0 | 2947 | block = finish_block (newobj->name, &local_symbols, |
63e43d3a PMR |
2948 | newobj->old_blocks, NULL, |
2949 | newobj->start_addr, valu); | |
df8a16a1 DJ |
2950 | |
2951 | /* For C++, set the block's scope. */ | |
fe978cb0 PA |
2952 | if (SYMBOL_LANGUAGE (newobj->name) == language_cplus) |
2953 | cp_set_block_scope (newobj->name, block, | |
195a3f6c | 2954 | &objfile->objfile_obstack); |
c906108c | 2955 | } |
c906108c | 2956 | |
fe978cb0 PA |
2957 | newobj = push_context (0, valu); |
2958 | newobj->name = define_symbol (valu, name, desc, type, objfile); | |
c906108c SS |
2959 | break; |
2960 | ||
2961 | default: | |
2962 | define_symbol (valu, name, desc, type, objfile); | |
2963 | break; | |
2964 | } | |
2965 | } | |
2966 | break; | |
2967 | ||
c5aa993b JM |
2968 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
2969 | for a bunch of other flags, too. Someday we may parse their | |
2970 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
e31272c3 | 2971 | case N_OPT: /* Solaris 2: Compiler options. */ |
c906108c SS |
2972 | if (name) |
2973 | { | |
6314a349 | 2974 | if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2975 | { |
2976 | processing_gcc_compilation = 2; | |
c906108c SS |
2977 | } |
2978 | else | |
2979 | n_opt_found = 1; | |
2980 | } | |
2981 | break; | |
2982 | ||
51cc5b07 AC |
2983 | case N_MAIN: /* Name of main routine. */ |
2984 | /* FIXME: If one has a symbol file with N_MAIN and then replaces | |
2985 | it with a symbol file with "main" and without N_MAIN. I'm | |
2986 | not sure exactly what rule to follow but probably something | |
2987 | like: N_MAIN takes precedence over "main" no matter what | |
2988 | objfile it is in; If there is more than one N_MAIN, choose | |
2989 | the one in the symfile_objfile; If there is more than one | |
2990 | N_MAIN within a given objfile, complain() and choose | |
0963b4bd | 2991 | arbitrarily. (kingdon) */ |
51cc5b07 | 2992 | if (name != NULL) |
3d548a53 | 2993 | set_objfile_main_name (objfile, name, language_unknown); |
51cc5b07 AC |
2994 | break; |
2995 | ||
c5aa993b | 2996 | /* The following symbol types can be ignored. */ |
e31272c3 MK |
2997 | case N_OBJ: /* Solaris 2: Object file dir and name. */ |
2998 | case N_PATCH: /* Solaris 2: Patch Run Time Checker. */ | |
2999 | /* N_UNDF: Solaris 2: File separator mark. */ | |
3000 | /* N_UNDF: -- we will never encounter it, since we only process | |
3001 | one file's symbols at once. */ | |
3002 | case N_ENDM: /* Solaris 2: End of module. */ | |
c906108c SS |
3003 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
3004 | break; | |
3005 | } | |
3006 | ||
3007 | /* '#' is a GNU C extension to allow one symbol to refer to another | |
3008 | related symbol. | |
3009 | ||
3010 | Generally this is used so that an alias can refer to its main | |
c5aa993b | 3011 | symbol. */ |
13f6513c | 3012 | gdb_assert (name); |
c906108c SS |
3013 | if (name[0] == '#') |
3014 | { | |
e31272c3 MK |
3015 | /* Initialize symbol reference names and determine if this is a |
3016 | definition. If a symbol reference is being defined, go ahead | |
3017 | and add it. Otherwise, just return. */ | |
c906108c | 3018 | |
a121b7c1 | 3019 | const char *s = name; |
c906108c SS |
3020 | int refnum; |
3021 | ||
3022 | /* If this stab defines a new reference ID that is not on the | |
c5aa993b | 3023 | reference list, then put it on the reference list. |
c906108c | 3024 | |
c5aa993b JM |
3025 | We go ahead and advance NAME past the reference, even though |
3026 | it is not strictly necessary at this time. */ | |
c906108c SS |
3027 | refnum = symbol_reference_defined (&s); |
3028 | if (refnum >= 0) | |
3029 | if (!ref_search (refnum)) | |
3030 | ref_add (refnum, 0, name, valu); | |
3031 | name = s; | |
3032 | } | |
3033 | ||
c906108c SS |
3034 | previous_stab_code = type; |
3035 | } | |
3036 | \f | |
3037 | /* FIXME: The only difference between this and elfstab_build_psymtabs | |
3038 | is the call to install_minimal_symbols for elf, and the support for | |
3039 | split sections. If the differences are really that small, the code | |
3040 | should be shared. */ | |
3041 | ||
3042 | /* Scan and build partial symbols for an coff symbol file. | |
3043 | The coff file has already been processed to get its minimal symbols. | |
3044 | ||
3045 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3046 | rolled into one. | |
3047 | ||
3048 | OBJFILE is the object file we are reading symbols from. | |
3049 | ADDR is the address relative to which the symbols are (e.g. | |
3050 | the base address of the text segment). | |
c906108c SS |
3051 | TEXTADDR is the address of the text section. |
3052 | TEXTSIZE is the size of the text section. | |
3053 | STABSECTS is the list of .stab sections in OBJFILE. | |
3054 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
3055 | .stabstr section exists. | |
3056 | ||
3057 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 3058 | adjusted for coff details. */ |
c906108c SS |
3059 | |
3060 | void | |
c67a9c90 | 3061 | coffstab_build_psymtabs (struct objfile *objfile, |
fba45db2 KB |
3062 | CORE_ADDR textaddr, unsigned int textsize, |
3063 | struct stab_section_list *stabsects, | |
3064 | file_ptr stabstroffset, unsigned int stabstrsize) | |
c906108c SS |
3065 | { |
3066 | int val; | |
3067 | bfd *sym_bfd = objfile->obfd; | |
3068 | char *name = bfd_get_filename (sym_bfd); | |
c906108c SS |
3069 | unsigned int stabsize; |
3070 | ||
c906108c SS |
3071 | DBX_TEXT_ADDR (objfile) = textaddr; |
3072 | DBX_TEXT_SIZE (objfile) = textsize; | |
3073 | ||
3074 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3075 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; |
c906108c | 3076 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
c5aa993b | 3077 | |
c906108c | 3078 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3079 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3080 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3081 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3082 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3083 | |
3084 | /* Now read in the string table in one big gulp. */ | |
3085 | ||
3086 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3087 | if (val < 0) | |
3088 | perror_with_name (name); | |
3a42e9d0 | 3089 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3090 | if (val != stabstrsize) |
3091 | perror_with_name (name); | |
3092 | ||
3093 | stabsread_new_init (); | |
3094 | buildsym_new_init (); | |
3095 | free_header_files (); | |
3096 | init_header_files (); | |
3097 | ||
3098 | processing_acc_compilation = 1; | |
3099 | ||
3100 | /* In a coff file, we've already installed the minimal symbols that came | |
3101 | from the coff (non-stab) symbol table, so always act like an | |
0963b4bd | 3102 | incremental load here. */ |
c906108c SS |
3103 | if (stabsects->next == NULL) |
3104 | { | |
3105 | stabsize = bfd_section_size (sym_bfd, stabsects->section); | |
3106 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
3107 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3108 | } | |
3109 | else | |
3110 | { | |
3111 | struct stab_section_list *stabsect; | |
3112 | ||
3113 | DBX_SYMCOUNT (objfile) = 0; | |
3114 | for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next) | |
3115 | { | |
3116 | stabsize = bfd_section_size (sym_bfd, stabsect->section); | |
3117 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); | |
3118 | } | |
3119 | ||
3120 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3121 | ||
3122 | symbuf_sections = stabsects->next; | |
3123 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section); | |
3124 | symbuf_read = 0; | |
3125 | } | |
3126 | ||
96baa820 | 3127 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3128 | } |
3129 | \f | |
3130 | /* Scan and build partial symbols for an ELF symbol file. | |
fea25152 | 3131 | This ELF file has already been processed to get its minimal symbols. |
c906108c SS |
3132 | |
3133 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3134 | rolled into one. | |
3135 | ||
3136 | OBJFILE is the object file we are reading symbols from. | |
3137 | ADDR is the address relative to which the symbols are (e.g. | |
3138 | the base address of the text segment). | |
086df311 | 3139 | STABSECT is the BFD section information for the .stab section. |
c906108c SS |
3140 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
3141 | .stabstr section exists. | |
3142 | ||
3143 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 3144 | adjusted for elf details. */ |
c906108c SS |
3145 | |
3146 | void | |
c67a9c90 | 3147 | elfstab_build_psymtabs (struct objfile *objfile, asection *stabsect, |
fba45db2 | 3148 | file_ptr stabstroffset, unsigned int stabstrsize) |
c906108c SS |
3149 | { |
3150 | int val; | |
3151 | bfd *sym_bfd = objfile->obfd; | |
3152 | char *name = bfd_get_filename (sym_bfd); | |
5fe41fbf | 3153 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
c906108c | 3154 | |
7a292a7a SS |
3155 | /* Find the first and last text address. dbx_symfile_read seems to |
3156 | want this. */ | |
3157 | find_text_range (sym_bfd, objfile); | |
c906108c SS |
3158 | |
3159 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3160 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; |
086df311 DJ |
3161 | DBX_SYMCOUNT (objfile) |
3162 | = bfd_section_size (objfile->obfd, stabsect) / DBX_SYMBOL_SIZE (objfile); | |
c906108c | 3163 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
086df311 DJ |
3164 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; |
3165 | DBX_STAB_SECTION (objfile) = stabsect; | |
c5aa993b | 3166 | |
c906108c | 3167 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3168 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3169 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3170 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3171 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3172 | |
3173 | /* Now read in the string table in one big gulp. */ | |
3174 | ||
3175 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3176 | if (val < 0) | |
3177 | perror_with_name (name); | |
3a42e9d0 | 3178 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3179 | if (val != stabstrsize) |
3180 | perror_with_name (name); | |
3181 | ||
3182 | stabsread_new_init (); | |
3183 | buildsym_new_init (); | |
3184 | free_header_files (); | |
3185 | init_header_files (); | |
c906108c SS |
3186 | |
3187 | processing_acc_compilation = 1; | |
3188 | ||
086df311 DJ |
3189 | symbuf_read = 0; |
3190 | symbuf_left = bfd_section_size (objfile->obfd, stabsect); | |
ac8035ab | 3191 | stabs_data = symfile_relocate_debug_section (objfile, stabsect, NULL); |
086df311 | 3192 | if (stabs_data) |
5fe41fbf | 3193 | make_cleanup (free_current_contents, (void *) &stabs_data); |
086df311 | 3194 | |
c906108c SS |
3195 | /* In an elf file, we've already installed the minimal symbols that came |
3196 | from the elf (non-stab) symbol table, so always act like an | |
7134143f DJ |
3197 | incremental load here. dbx_symfile_read should not generate any new |
3198 | minimal symbols, since we will have already read the ELF dynamic symbol | |
3199 | table and normal symbol entries won't be in the ".stab" section; but in | |
3200 | case it does, it will install them itself. */ | |
96baa820 | 3201 | dbx_symfile_read (objfile, 0); |
086df311 | 3202 | |
5fe41fbf | 3203 | do_cleanups (back_to); |
c906108c SS |
3204 | } |
3205 | \f | |
3206 | /* Scan and build partial symbols for a file with special sections for stabs | |
3207 | and stabstrings. The file has already been processed to get its minimal | |
3208 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
3209 | ||
3210 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3211 | rolled into one. | |
3212 | ||
3213 | OBJFILE is the object file we are reading symbols from. | |
3214 | ADDR is the address relative to which the symbols are (e.g. the base address | |
c5aa993b | 3215 | of the text segment). |
c906108c SS |
3216 | STAB_NAME is the name of the section that contains the stabs. |
3217 | STABSTR_NAME is the name of the section that contains the stab strings. | |
3218 | ||
0963b4bd MS |
3219 | This routine is mostly copied from dbx_symfile_init and |
3220 | dbx_symfile_read. */ | |
c906108c SS |
3221 | |
3222 | void | |
c67a9c90 | 3223 | stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, |
fba45db2 | 3224 | char *stabstr_name, char *text_name) |
c906108c SS |
3225 | { |
3226 | int val; | |
3227 | bfd *sym_bfd = objfile->obfd; | |
3228 | char *name = bfd_get_filename (sym_bfd); | |
3229 | asection *stabsect; | |
3230 | asection *stabstrsect; | |
3231 | asection *text_sect; | |
d2f4b8fe | 3232 | struct dbx_symfile_info *dbx; |
c906108c SS |
3233 | |
3234 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
3235 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
3236 | ||
3237 | if (!stabsect) | |
3238 | return; | |
3239 | ||
3240 | if (!stabstrsect) | |
0963b4bd MS |
3241 | error (_("stabsect_build_psymtabs: Found stabs (%s), " |
3242 | "but not string section (%s)"), | |
c906108c SS |
3243 | stab_name, stabstr_name); |
3244 | ||
d2f4b8fe TT |
3245 | dbx = XCNEW (struct dbx_symfile_info); |
3246 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c SS |
3247 | |
3248 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); | |
3249 | if (!text_sect) | |
8a3fe4f8 | 3250 | error (_("Can't find %s section in symbol file"), text_name); |
c906108c SS |
3251 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
3252 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
3253 | ||
c5aa993b JM |
3254 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); |
3255 | DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect) | |
c906108c SS |
3256 | / DBX_SYMBOL_SIZE (objfile); |
3257 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect); | |
3e43a32a MS |
3258 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING |
3259 | INSIDE BFD DATA | |
3260 | STRUCTURES */ | |
c5aa993b | 3261 | |
c906108c | 3262 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) |
063e58ba MD |
3263 | error (_("ridiculous string table size: %d bytes"), |
3264 | DBX_STRINGTAB_SIZE (objfile)); | |
c906108c | 3265 | DBX_STRINGTAB (objfile) = (char *) |
3e43a32a MS |
3266 | obstack_alloc (&objfile->objfile_obstack, |
3267 | DBX_STRINGTAB_SIZE (objfile) + 1); | |
c906108c SS |
3268 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); |
3269 | ||
3270 | /* Now read in the string table in one big gulp. */ | |
3271 | ||
c5aa993b JM |
3272 | val = bfd_get_section_contents (sym_bfd, /* bfd */ |
3273 | stabstrsect, /* bfd section */ | |
063e58ba | 3274 | DBX_STRINGTAB (objfile), /* input buffer */ |
3e43a32a MS |
3275 | 0, /* offset into section */ |
3276 | DBX_STRINGTAB_SIZE (objfile)); /* amount to | |
3277 | read */ | |
c906108c SS |
3278 | |
3279 | if (!val) | |
3280 | perror_with_name (name); | |
3281 | ||
3282 | stabsread_new_init (); | |
3283 | buildsym_new_init (); | |
3284 | free_header_files (); | |
3285 | init_header_files (); | |
c906108c | 3286 | |
0963b4bd | 3287 | /* Now, do an incremental load. */ |
c906108c SS |
3288 | |
3289 | processing_acc_compilation = 1; | |
96baa820 | 3290 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3291 | } |
3292 | \f | |
00b5771c | 3293 | static const struct sym_fns aout_sym_fns = |
c906108c | 3294 | { |
0963b4bd MS |
3295 | dbx_new_init, /* init anything gbl to entire symtab */ |
3296 | dbx_symfile_init, /* read initial info, setup for sym_read() */ | |
3297 | dbx_symfile_read, /* read a symbol file into symtab */ | |
b11896a5 | 3298 | NULL, /* sym_read_psymbols */ |
0963b4bd MS |
3299 | dbx_symfile_finish, /* finished with file, cleanup */ |
3300 | default_symfile_offsets, /* parse user's offsets to internal form */ | |
3301 | default_symfile_segments, /* Get segment information from a file. */ | |
3302 | NULL, | |
3303 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3304 | NULL, /* sym_probe_fns */ |
00b5771c | 3305 | &psym_functions |
c906108c SS |
3306 | }; |
3307 | ||
3308 | void | |
fba45db2 | 3309 | _initialize_dbxread (void) |
c906108c | 3310 | { |
c256e171 | 3311 | add_symtab_fns (bfd_target_aout_flavour, &aout_sym_fns); |
d2f4b8fe TT |
3312 | |
3313 | dbx_objfile_data_key | |
3314 | = register_objfile_data_with_cleanup (NULL, dbx_free_symfile_info); | |
c906108c | 3315 | } |