Commit | Line | Data |
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c906108c | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
e2882c85 | 2 | Copyright (C) 1986-2018 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" |
c906108c | 57 | #include "aout/aout64.h" |
0963b4bd MS |
58 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not |
59 | native, now. */ | |
c906108c | 60 | \f |
c5aa993b | 61 | |
d2f4b8fe TT |
62 | /* Key for dbx-associated data. */ |
63 | ||
64 | const struct objfile_data *dbx_objfile_data_key; | |
65 | ||
c906108c SS |
66 | /* We put a pointer to this structure in the read_symtab_private field |
67 | of the psymtab. */ | |
68 | ||
c5aa993b JM |
69 | struct symloc |
70 | { | |
c5aa993b JM |
71 | /* Offset within the file symbol table of first local symbol for this |
72 | file. */ | |
c906108c | 73 | |
c5aa993b | 74 | int ldsymoff; |
c906108c | 75 | |
c5aa993b JM |
76 | /* Length (in bytes) of the section of the symbol table devoted to |
77 | this file's symbols (actually, the section bracketed may contain | |
78 | more than just this file's symbols). If ldsymlen is 0, the only | |
79 | reason for this thing's existence is the dependency list. Nothing | |
80 | else will happen when it is read in. */ | |
c906108c | 81 | |
c5aa993b | 82 | int ldsymlen; |
c906108c | 83 | |
c5aa993b | 84 | /* The size of each symbol in the symbol file (in external form). */ |
c906108c | 85 | |
c5aa993b | 86 | int symbol_size; |
c906108c | 87 | |
c5aa993b JM |
88 | /* Further information needed to locate the symbols if they are in |
89 | an ELF file. */ | |
c906108c | 90 | |
c5aa993b JM |
91 | int symbol_offset; |
92 | int string_offset; | |
93 | int file_string_offset; | |
5ffa0793 | 94 | enum language pst_language; |
c5aa993b | 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) | |
5ffa0793 | 104 | #define PST_LANGUAGE(p) (SYMLOC(p)->pst_language) |
c906108c | 105 | \f |
c5aa993b | 106 | |
91a81f69 TT |
107 | /* The objfile we are currently reading. */ |
108 | ||
dd707e8e | 109 | static struct objfile *dbxread_objfile; |
91a81f69 | 110 | |
0963b4bd | 111 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
112 | |
113 | static enum language psymtab_language = language_unknown; | |
114 | ||
c906108c SS |
115 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
116 | ||
117 | static bfd *symfile_bfd; | |
118 | ||
119 | /* The size of each symbol in the symbol file (in external form). | |
120 | This is set by dbx_symfile_read when building psymtabs, and by | |
121 | dbx_psymtab_to_symtab when building symtabs. */ | |
122 | ||
123 | static unsigned symbol_size; | |
124 | ||
0963b4bd | 125 | /* This is the offset of the symbol table in the executable file. */ |
c906108c SS |
126 | |
127 | static unsigned symbol_table_offset; | |
128 | ||
0963b4bd | 129 | /* This is the offset of the string table in the executable file. */ |
c906108c SS |
130 | |
131 | static unsigned string_table_offset; | |
132 | ||
133 | /* For elf+stab executables, the n_strx field is not a simple index | |
134 | into the string table. Instead, each .o file has a base offset in | |
135 | the string table, and the associated symbols contain offsets from | |
136 | this base. The following two variables contain the base offset for | |
0963b4bd | 137 | the current and next .o files. */ |
c906108c SS |
138 | |
139 | static unsigned int file_string_table_offset; | |
140 | static unsigned int next_file_string_table_offset; | |
141 | ||
142 | /* .o and NLM files contain unrelocated addresses which are based at | |
143 | 0. When non-zero, this flag disables some of the special cases for | |
0963b4bd | 144 | Solaris elf+stab text addresses at location 0. */ |
c906108c SS |
145 | |
146 | static int symfile_relocatable = 0; | |
147 | ||
81cc346d TT |
148 | /* When set, we are processing a .o file compiled by sun acc. This is |
149 | misnamed; it refers to all stabs-in-elf implementations which use | |
150 | N_UNDF the way Sun does, including Solaris gcc. Hopefully all | |
151 | stabs-in-elf implementations ever invented will choose to be | |
152 | compatible. */ | |
153 | ||
154 | static unsigned char processing_acc_compilation; | |
155 | ||
c906108c SS |
156 | \f |
157 | /* The lowest text address we have yet encountered. This is needed | |
158 | because in an a.out file, there is no header field which tells us | |
159 | what address the program is actually going to be loaded at, so we | |
160 | need to make guesses based on the symbols (which *are* relocated to | |
161 | reflect the address it will be loaded at). */ | |
162 | ||
163 | static CORE_ADDR lowest_text_address; | |
164 | ||
165 | /* Non-zero if there is any line number info in the objfile. Prevents | |
8763cede | 166 | dbx_end_psymtab from discarding an otherwise empty psymtab. */ |
c906108c SS |
167 | |
168 | static int has_line_numbers; | |
169 | ||
170 | /* Complaints about the symbols we have encountered. */ | |
171 | ||
23136709 KB |
172 | static void |
173 | unknown_symtype_complaint (const char *arg1) | |
174 | { | |
b98664d3 | 175 | complaint (_("unknown symbol type %s"), arg1); |
23136709 | 176 | } |
c906108c | 177 | |
23136709 KB |
178 | static void |
179 | lbrac_mismatch_complaint (int arg1) | |
180 | { | |
b98664d3 | 181 | complaint (_("N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d"), arg1); |
23136709 | 182 | } |
c906108c | 183 | |
23136709 KB |
184 | static void |
185 | repeated_header_complaint (const char *arg1, int arg2) | |
186 | { | |
b98664d3 | 187 | complaint (_("\"repeated\" header file %s not " |
3e43a32a | 188 | "previously seen, at symtab pos %d"), |
23136709 KB |
189 | arg1, arg2); |
190 | } | |
1f077a3e | 191 | |
7a292a7a SS |
192 | /* find_text_range --- find start and end of loadable code sections |
193 | ||
194 | The find_text_range function finds the shortest address range that | |
195 | encloses all sections containing executable code, and stores it in | |
196 | objfile's text_addr and text_size members. | |
197 | ||
198 | dbx_symfile_read will use this to finish off the partial symbol | |
199 | table, in some cases. */ | |
200 | ||
201 | static void | |
c5aa993b | 202 | find_text_range (bfd * sym_bfd, struct objfile *objfile) |
7a292a7a SS |
203 | { |
204 | asection *sec; | |
205 | int found_any = 0; | |
b9179dbc EZ |
206 | CORE_ADDR start = 0; |
207 | CORE_ADDR end = 0; | |
c5aa993b | 208 | |
7a292a7a SS |
209 | for (sec = sym_bfd->sections; sec; sec = sec->next) |
210 | if (bfd_get_section_flags (sym_bfd, sec) & SEC_CODE) | |
211 | { | |
212 | CORE_ADDR sec_start = bfd_section_vma (sym_bfd, sec); | |
213 | CORE_ADDR sec_end = sec_start + bfd_section_size (sym_bfd, sec); | |
214 | ||
215 | if (found_any) | |
216 | { | |
c5aa993b JM |
217 | if (sec_start < start) |
218 | start = sec_start; | |
219 | if (sec_end > end) | |
220 | end = sec_end; | |
7a292a7a SS |
221 | } |
222 | else | |
223 | { | |
224 | start = sec_start; | |
225 | end = sec_end; | |
226 | } | |
227 | ||
228 | found_any = 1; | |
229 | } | |
230 | ||
c5aa993b | 231 | if (!found_any) |
8a3fe4f8 | 232 | error (_("Can't find any code sections in symbol file")); |
7a292a7a SS |
233 | |
234 | DBX_TEXT_ADDR (objfile) = start; | |
235 | DBX_TEXT_SIZE (objfile) = end - start; | |
236 | } | |
c5aa993b | 237 | \f |
7a292a7a SS |
238 | |
239 | ||
c906108c SS |
240 | /* During initial symbol readin, we need to have a structure to keep |
241 | track of which psymtabs have which bincls in them. This structure | |
242 | is used during readin to setup the list of dependencies within each | |
0963b4bd | 243 | partial symbol table. */ |
c906108c SS |
244 | |
245 | struct header_file_location | |
246 | { | |
bf259e25 TT |
247 | header_file_location (const char *name_, int instance_, |
248 | struct partial_symtab *pst_) | |
249 | : name (name_), | |
250 | instance (instance_), | |
251 | pst (pst_) | |
252 | { | |
253 | } | |
254 | ||
a121b7c1 | 255 | const char *name; /* Name of header file */ |
c906108c SS |
256 | int instance; /* See above */ |
257 | struct partial_symtab *pst; /* Partial symtab that has the | |
0963b4bd | 258 | BINCL/EINCL defs for this file. */ |
c906108c SS |
259 | }; |
260 | ||
bf259e25 TT |
261 | /* The list of bincls. */ |
262 | static std::vector<struct header_file_location> *bincl_list; | |
c906108c | 263 | |
0963b4bd | 264 | /* Local function prototypes. */ |
c906108c | 265 | |
5c80ed9d | 266 | static void read_ofile_symtab (struct objfile *, struct partial_symtab *); |
c906108c | 267 | |
257e7a09 YQ |
268 | static void dbx_read_symtab (struct partial_symtab *self, |
269 | struct objfile *objfile); | |
c906108c | 270 | |
5c80ed9d | 271 | static void dbx_psymtab_to_symtab_1 (struct objfile *, struct partial_symtab *); |
c906108c | 272 | |
8dddcb8f | 273 | static void read_dbx_symtab (minimal_symbol_reader &, struct objfile *); |
c906108c | 274 | |
a121b7c1 PA |
275 | static struct partial_symtab *find_corresponding_bincl_psymtab (const char *, |
276 | int); | |
c906108c | 277 | |
a121b7c1 | 278 | static const char *dbx_next_symbol_text (struct objfile *); |
c906108c | 279 | |
a14ed312 | 280 | static void fill_symbuf (bfd *); |
c906108c | 281 | |
a14ed312 | 282 | static void dbx_symfile_init (struct objfile *); |
c906108c | 283 | |
a14ed312 | 284 | static void dbx_new_init (struct objfile *); |
c906108c | 285 | |
b15cc25c | 286 | static void dbx_symfile_read (struct objfile *, symfile_add_flags); |
c906108c | 287 | |
a14ed312 | 288 | static void dbx_symfile_finish (struct objfile *); |
c906108c | 289 | |
8dddcb8f TT |
290 | static void record_minimal_symbol (minimal_symbol_reader &, |
291 | const char *, CORE_ADDR, int, | |
bec71544 | 292 | struct objfile *); |
c906108c | 293 | |
a121b7c1 | 294 | static void add_new_header_file (const char *, int); |
c906108c | 295 | |
a121b7c1 | 296 | static void add_old_header_file (const char *, int); |
c906108c | 297 | |
a14ed312 | 298 | static void add_this_object_header_file (int); |
c906108c | 299 | |
a121b7c1 | 300 | static struct partial_symtab *start_psymtab (struct objfile *, const char *, |
a14ed312 | 301 | CORE_ADDR, int, |
af5bf4ad SM |
302 | std::vector<partial_symbol *> &, |
303 | std::vector<partial_symbol *> &); | |
d4f3574e | 304 | |
0963b4bd | 305 | /* Free up old header file tables. */ |
c906108c | 306 | |
d3d55eeb | 307 | void |
fba45db2 | 308 | free_header_files (void) |
c906108c SS |
309 | { |
310 | if (this_object_header_files) | |
311 | { | |
b8c9b27d | 312 | xfree (this_object_header_files); |
c906108c SS |
313 | this_object_header_files = NULL; |
314 | } | |
315 | n_allocated_this_object_header_files = 0; | |
316 | } | |
317 | ||
0963b4bd | 318 | /* Allocate new header file tables. */ |
c906108c | 319 | |
d3d55eeb | 320 | void |
fba45db2 | 321 | init_header_files (void) |
c906108c SS |
322 | { |
323 | n_allocated_this_object_header_files = 10; | |
8d749320 | 324 | this_object_header_files = XNEWVEC (int, 10); |
c906108c SS |
325 | } |
326 | ||
327 | /* Add header file number I for this object file | |
328 | at the next successive FILENUM. */ | |
329 | ||
330 | static void | |
fba45db2 | 331 | add_this_object_header_file (int i) |
c906108c SS |
332 | { |
333 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
334 | { | |
335 | n_allocated_this_object_header_files *= 2; | |
336 | this_object_header_files | |
337 | = (int *) xrealloc ((char *) this_object_header_files, | |
c5aa993b | 338 | n_allocated_this_object_header_files * sizeof (int)); |
c906108c SS |
339 | } |
340 | ||
341 | this_object_header_files[n_this_object_header_files++] = i; | |
342 | } | |
343 | ||
344 | /* Add to this file an "old" header file, one already seen in | |
345 | a previous object file. NAME is the header file's name. | |
346 | INSTANCE is its instance code, to select among multiple | |
347 | symbol tables for the same header file. */ | |
348 | ||
349 | static void | |
a121b7c1 | 350 | add_old_header_file (const char *name, int instance) |
c906108c | 351 | { |
dd707e8e | 352 | struct header_file *p = HEADER_FILES (dbxread_objfile); |
52f0bd74 | 353 | int i; |
c906108c | 354 | |
dd707e8e | 355 | for (i = 0; i < N_HEADER_FILES (dbxread_objfile); i++) |
0ba1096a | 356 | if (filename_cmp (p[i].name, name) == 0 && instance == p[i].instance) |
c906108c SS |
357 | { |
358 | add_this_object_header_file (i); | |
359 | return; | |
360 | } | |
23136709 | 361 | repeated_header_complaint (name, symnum); |
c906108c SS |
362 | } |
363 | ||
364 | /* Add to this file a "new" header file: definitions for its types follow. | |
365 | NAME is the header file's name. | |
366 | Most often this happens only once for each distinct header file, | |
367 | but not necessarily. If it happens more than once, INSTANCE has | |
368 | a different value each time, and references to the header file | |
369 | use INSTANCE values to select among them. | |
370 | ||
371 | dbx output contains "begin" and "end" markers for each new header file, | |
372 | but at this level we just need to know which files there have been; | |
373 | so we record the file when its "begin" is seen and ignore the "end". */ | |
374 | ||
375 | static void | |
a121b7c1 | 376 | add_new_header_file (const char *name, int instance) |
c906108c | 377 | { |
52f0bd74 AC |
378 | int i; |
379 | struct header_file *hfile; | |
c906108c SS |
380 | |
381 | /* Make sure there is room for one more header file. */ | |
382 | ||
dd707e8e | 383 | i = N_ALLOCATED_HEADER_FILES (dbxread_objfile); |
c906108c | 384 | |
dd707e8e | 385 | if (N_HEADER_FILES (dbxread_objfile) == i) |
c906108c SS |
386 | { |
387 | if (i == 0) | |
388 | { | |
dd707e8e TT |
389 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = 10; |
390 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
c906108c SS |
391 | xmalloc (10 * sizeof (struct header_file)); |
392 | } | |
393 | else | |
394 | { | |
395 | i *= 2; | |
dd707e8e TT |
396 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = i; |
397 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
398 | xrealloc ((char *) HEADER_FILES (dbxread_objfile), | |
c906108c SS |
399 | (i * sizeof (struct header_file))); |
400 | } | |
401 | } | |
402 | ||
403 | /* Create an entry for this header file. */ | |
404 | ||
dd707e8e TT |
405 | i = N_HEADER_FILES (dbxread_objfile)++; |
406 | hfile = HEADER_FILES (dbxread_objfile) + i; | |
1b36a34b | 407 | hfile->name = xstrdup (name); |
c906108c SS |
408 | hfile->instance = instance; |
409 | hfile->length = 10; | |
8d749320 | 410 | hfile->vector = XCNEWVEC (struct type *, 10); |
c906108c SS |
411 | |
412 | add_this_object_header_file (i); | |
413 | } | |
414 | ||
415 | #if 0 | |
416 | static struct type ** | |
fba45db2 | 417 | explicit_lookup_type (int real_filenum, int index) |
c906108c | 418 | { |
dd707e8e | 419 | struct header_file *f = &HEADER_FILES (dbxread_objfile)[real_filenum]; |
c906108c SS |
420 | |
421 | if (index >= f->length) | |
422 | { | |
423 | f->length *= 2; | |
424 | f->vector = (struct type **) | |
425 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
426 | memset (&f->vector[f->length / 2], | |
c5aa993b | 427 | '\0', f->length * sizeof (struct type *) / 2); |
c906108c SS |
428 | } |
429 | return &f->vector[index]; | |
430 | } | |
431 | #endif | |
432 | \f | |
433 | static void | |
8dddcb8f TT |
434 | record_minimal_symbol (minimal_symbol_reader &reader, |
435 | const char *name, CORE_ADDR address, int type, | |
fba45db2 | 436 | struct objfile *objfile) |
c906108c SS |
437 | { |
438 | enum minimal_symbol_type ms_type; | |
439 | int section; | |
c906108c SS |
440 | |
441 | switch (type) | |
442 | { | |
443 | case N_TEXT | N_EXT: | |
444 | ms_type = mst_text; | |
b8fbeb18 | 445 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
446 | break; |
447 | case N_DATA | N_EXT: | |
448 | ms_type = mst_data; | |
b8fbeb18 | 449 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
450 | break; |
451 | case N_BSS | N_EXT: | |
452 | ms_type = mst_bss; | |
b8fbeb18 | 453 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
454 | break; |
455 | case N_ABS | N_EXT: | |
456 | ms_type = mst_abs; | |
457 | section = -1; | |
c906108c SS |
458 | break; |
459 | #ifdef N_SETV | |
460 | case N_SETV | N_EXT: | |
461 | ms_type = mst_data; | |
b8fbeb18 | 462 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
463 | break; |
464 | case N_SETV: | |
465 | /* I don't think this type actually exists; since a N_SETV is the result | |
c5aa993b JM |
466 | of going over many .o files, it doesn't make sense to have one |
467 | file local. */ | |
c906108c | 468 | ms_type = mst_file_data; |
b8fbeb18 | 469 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
470 | break; |
471 | #endif | |
472 | case N_TEXT: | |
473 | case N_NBTEXT: | |
474 | case N_FN: | |
475 | case N_FN_SEQ: | |
476 | ms_type = mst_file_text; | |
b8fbeb18 | 477 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
478 | break; |
479 | case N_DATA: | |
480 | ms_type = mst_file_data; | |
481 | ||
482 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
c5aa993b JM |
483 | Record it as global even if it's local, not global, so |
484 | lookup_minimal_symbol can find it. We don't check symbol_leading_char | |
485 | because for SunOS4 it always is '_'. */ | |
91f54576 | 486 | if (name[8] == 'C' && strcmp ("__DYNAMIC", name) == 0) |
c906108c SS |
487 | ms_type = mst_data; |
488 | ||
489 | /* Same with virtual function tables, both global and static. */ | |
490 | { | |
bec71544 | 491 | const char *tempstring = name; |
9a619af0 | 492 | |
c906108c SS |
493 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) |
494 | ++tempstring; | |
015a42b4 | 495 | if (is_vtable_name (tempstring)) |
c906108c SS |
496 | ms_type = mst_data; |
497 | } | |
b8fbeb18 | 498 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
499 | break; |
500 | case N_BSS: | |
501 | ms_type = mst_file_bss; | |
b8fbeb18 | 502 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
503 | break; |
504 | default: | |
505 | ms_type = mst_unknown; | |
506 | section = -1; | |
c906108c | 507 | break; |
c5aa993b | 508 | } |
c906108c SS |
509 | |
510 | if ((ms_type == mst_file_text || ms_type == mst_text) | |
511 | && address < lowest_text_address) | |
512 | lowest_text_address = address; | |
513 | ||
8dddcb8f | 514 | reader.record_with_info (name, address, ms_type, section); |
c906108c SS |
515 | } |
516 | \f | |
517 | /* Scan and build partial symbols for a symbol file. | |
518 | We have been initialized by a call to dbx_symfile_init, which | |
519 | put all the relevant info into a "struct dbx_symfile_info", | |
f4352531 | 520 | hung off the objfile structure. */ |
c906108c SS |
521 | |
522 | static void | |
b15cc25c | 523 | dbx_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
524 | { |
525 | bfd *sym_bfd; | |
526 | int val; | |
c906108c | 527 | |
c906108c SS |
528 | sym_bfd = objfile->obfd; |
529 | ||
530 | /* .o and .nlm files are relocatables with text, data and bss segs based at | |
531 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for | |
532 | symbols with a value of 0. */ | |
533 | ||
534 | symfile_relocatable = bfd_get_file_flags (sym_bfd) & HAS_RELOC; | |
535 | ||
c906108c SS |
536 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); |
537 | if (val < 0) | |
4262abfb | 538 | perror_with_name (objfile_name (objfile)); |
c906108c | 539 | |
de1d8fb9 | 540 | /* Size the symbol table. */ |
af5bf4ad SM |
541 | if (objfile->global_psymbols.capacity () == 0 |
542 | && objfile->static_psymbols.capacity () == 0) | |
c906108c SS |
543 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); |
544 | ||
545 | symbol_size = DBX_SYMBOL_SIZE (objfile); | |
546 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
547 | ||
33c7c59d | 548 | scoped_free_pendings free_pending; |
c906108c | 549 | |
d25e8719 | 550 | minimal_symbol_reader reader (objfile); |
c906108c | 551 | |
0963b4bd | 552 | /* Read stabs data from executable file and define symbols. */ |
c906108c | 553 | |
8dddcb8f | 554 | read_dbx_symtab (reader, objfile); |
c906108c | 555 | |
c906108c | 556 | /* Install any minimal symbols that have been collected as the current |
0963b4bd | 557 | minimal symbols for this objfile. */ |
c906108c | 558 | |
d25e8719 | 559 | reader.install (); |
c906108c SS |
560 | } |
561 | ||
562 | /* Initialize anything that needs initializing when a completely new | |
563 | symbol file is specified (not just adding some symbols from another | |
564 | file, e.g. a shared library). */ | |
565 | ||
566 | static void | |
fba45db2 | 567 | dbx_new_init (struct objfile *ignore) |
c906108c SS |
568 | { |
569 | stabsread_new_init (); | |
2c722d18 | 570 | buildsym_init (); |
c906108c SS |
571 | init_header_files (); |
572 | } | |
573 | ||
574 | ||
575 | /* dbx_symfile_init () | |
576 | is the dbx-specific initialization routine for reading symbols. | |
577 | It is passed a struct objfile which contains, among other things, | |
578 | the BFD for the file whose symbols are being read, and a slot for a pointer | |
579 | to "private data" which we fill with goodies. | |
580 | ||
581 | We read the string table into malloc'd space and stash a pointer to it. | |
582 | ||
583 | Since BFD doesn't know how to read debug symbols in a format-independent | |
584 | way (and may never do so...), we have to do it ourselves. We will never | |
0963b4bd | 585 | be called unless this is an a.out (or very similar) file. |
c906108c SS |
586 | FIXME, there should be a cleaner peephole into the BFD environment here. */ |
587 | ||
c5aa993b | 588 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
c906108c SS |
589 | |
590 | static void | |
fba45db2 | 591 | dbx_symfile_init (struct objfile *objfile) |
c906108c SS |
592 | { |
593 | int val; | |
594 | bfd *sym_bfd = objfile->obfd; | |
595 | char *name = bfd_get_filename (sym_bfd); | |
596 | asection *text_sect; | |
597 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; | |
d2f4b8fe | 598 | struct dbx_symfile_info *dbx; |
c906108c | 599 | |
0963b4bd | 600 | /* Allocate struct to keep track of the symfile. */ |
d2f4b8fe TT |
601 | dbx = XCNEW (struct dbx_symfile_info); |
602 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c SS |
603 | |
604 | DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
605 | DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data"); | |
606 | DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss"); | |
607 | ||
0963b4bd | 608 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c SS |
609 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
610 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
611 | ||
0963b4bd | 612 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c | 613 | |
c906108c SS |
614 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
615 | if (!text_sect) | |
8a3fe4f8 | 616 | error (_("Can't find .text section in symbol file")); |
c906108c SS |
617 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
618 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
619 | ||
620 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); | |
621 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); | |
622 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; | |
623 | ||
8b92e4d5 EZ |
624 | /* Read the string table and stash it away in the objfile_obstack. |
625 | When we blow away the objfile the string table goes away as well. | |
c906108c SS |
626 | Note that gdb used to use the results of attempting to malloc the |
627 | string table, based on the size it read, as a form of sanity check | |
628 | for botched byte swapping, on the theory that a byte swapped string | |
629 | table size would be so totally bogus that the malloc would fail. Now | |
8b92e4d5 | 630 | that we put in on the objfile_obstack, we can't do this since gdb gets |
c906108c SS |
631 | a fatal error (out of virtual memory) if the size is bogus. We can |
632 | however at least check to see if the size is less than the size of | |
633 | the size field itself, or larger than the size of the entire file. | |
634 | Note that all valid string tables have a size greater than zero, since | |
0963b4bd | 635 | the bytes used to hold the size are included in the count. */ |
c906108c SS |
636 | |
637 | if (STRING_TABLE_OFFSET == 0) | |
638 | { | |
639 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET | |
c5aa993b | 640 | will never be zero, even when there is no string table. This |
0963b4bd | 641 | would appear to be a bug in bfd. */ |
c906108c SS |
642 | DBX_STRINGTAB_SIZE (objfile) = 0; |
643 | DBX_STRINGTAB (objfile) = NULL; | |
644 | } | |
645 | else | |
646 | { | |
647 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); | |
648 | if (val < 0) | |
649 | perror_with_name (name); | |
c5aa993b | 650 | |
4efb68b1 AC |
651 | memset (size_temp, 0, sizeof (size_temp)); |
652 | val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd); | |
c906108c SS |
653 | if (val < 0) |
654 | { | |
655 | perror_with_name (name); | |
656 | } | |
657 | else if (val == 0) | |
658 | { | |
659 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
660 | EOF if there is no string table, and attempting to read the size | |
0963b4bd | 661 | from EOF will read zero bytes. */ |
c906108c SS |
662 | DBX_STRINGTAB_SIZE (objfile) = 0; |
663 | DBX_STRINGTAB (objfile) = NULL; | |
664 | } | |
665 | else | |
666 | { | |
667 | /* Read some data that would appear to be the string table size. | |
668 | If there really is a string table, then it is probably the right | |
669 | size. Byteswap if necessary and validate the size. Note that | |
670 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
671 | random data that happened to be at STRING_TABLE_OFFSET, because | |
672 | bfd can't tell us there is no string table, the sanity checks may | |
0963b4bd | 673 | or may not catch this. */ |
c906108c | 674 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); |
c5aa993b | 675 | |
c906108c SS |
676 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) |
677 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
8a3fe4f8 | 678 | error (_("ridiculous string table size (%d bytes)."), |
c906108c | 679 | DBX_STRINGTAB_SIZE (objfile)); |
c5aa993b | 680 | |
c906108c | 681 | DBX_STRINGTAB (objfile) = |
8b92e4d5 | 682 | (char *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
683 | DBX_STRINGTAB_SIZE (objfile)); |
684 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); | |
c5aa993b | 685 | |
c906108c | 686 | /* Now read in the string table in one big gulp. */ |
c5aa993b | 687 | |
c906108c SS |
688 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
689 | if (val < 0) | |
690 | perror_with_name (name); | |
3a42e9d0 AM |
691 | val = bfd_bread (DBX_STRINGTAB (objfile), |
692 | DBX_STRINGTAB_SIZE (objfile), | |
693 | sym_bfd); | |
c906108c SS |
694 | if (val != DBX_STRINGTAB_SIZE (objfile)) |
695 | perror_with_name (name); | |
696 | } | |
697 | } | |
698 | } | |
699 | ||
700 | /* Perform any local cleanups required when we are done with a particular | |
701 | objfile. I.E, we are in the process of discarding all symbol information | |
702 | for an objfile, freeing up all memory held for it, and unlinking the | |
0963b4bd | 703 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
704 | |
705 | static void | |
fba45db2 | 706 | dbx_symfile_finish (struct objfile *objfile) |
c906108c | 707 | { |
d2f4b8fe TT |
708 | free_header_files (); |
709 | } | |
710 | ||
711 | static void | |
712 | dbx_free_symfile_info (struct objfile *objfile, void *arg) | |
713 | { | |
9a3c8263 | 714 | struct dbx_symfile_info *dbx = (struct dbx_symfile_info *) arg; |
d2f4b8fe TT |
715 | |
716 | if (dbx->header_files != NULL) | |
c906108c | 717 | { |
d2f4b8fe TT |
718 | int i = dbx->n_header_files; |
719 | struct header_file *hfiles = dbx->header_files; | |
c906108c | 720 | |
d2f4b8fe TT |
721 | while (--i >= 0) |
722 | { | |
723 | xfree (hfiles[i].name); | |
724 | xfree (hfiles[i].vector); | |
c906108c | 725 | } |
d2f4b8fe | 726 | xfree (hfiles); |
c906108c | 727 | } |
d2f4b8fe TT |
728 | |
729 | xfree (dbx); | |
c906108c | 730 | } |
d2f4b8fe | 731 | |
c906108c | 732 | \f |
c5aa993b | 733 | |
c906108c SS |
734 | /* Buffer for reading the symbol table entries. */ |
735 | static struct external_nlist symbuf[4096]; | |
736 | static int symbuf_idx; | |
737 | static int symbuf_end; | |
738 | ||
c906108c SS |
739 | /* Name of last function encountered. Used in Solaris to approximate |
740 | object file boundaries. */ | |
a121b7c1 | 741 | static const char *last_function_name; |
c906108c SS |
742 | |
743 | /* The address in memory of the string table of the object file we are | |
744 | reading (which might not be the "main" object file, but might be a | |
745 | shared library or some other dynamically loaded thing). This is | |
746 | set by read_dbx_symtab when building psymtabs, and by | |
747 | read_ofile_symtab when building symtabs, and is used only by | |
748 | next_symbol_text. FIXME: If that is true, we don't need it when | |
749 | building psymtabs, right? */ | |
750 | static char *stringtab_global; | |
751 | ||
752 | /* These variables are used to control fill_symbuf when the stabs | |
753 | symbols are not contiguous (as may be the case when a COFF file is | |
754 | linked using --split-by-reloc). */ | |
755 | static struct stab_section_list *symbuf_sections; | |
756 | static unsigned int symbuf_left; | |
757 | static unsigned int symbuf_read; | |
758 | ||
086df311 DJ |
759 | /* This variable stores a global stabs buffer, if we read stabs into |
760 | memory in one chunk in order to process relocations. */ | |
761 | static bfd_byte *stabs_data; | |
762 | ||
c906108c SS |
763 | /* Refill the symbol table input buffer |
764 | and set the variables that control fetching entries from it. | |
765 | Reports an error if no data available. | |
766 | This function can read past the end of the symbol table | |
767 | (into the string table) but this does no harm. */ | |
768 | ||
769 | static void | |
fba45db2 | 770 | fill_symbuf (bfd *sym_bfd) |
c906108c SS |
771 | { |
772 | unsigned int count; | |
773 | int nbytes; | |
774 | ||
086df311 DJ |
775 | if (stabs_data) |
776 | { | |
777 | nbytes = sizeof (symbuf); | |
778 | if (nbytes > symbuf_left) | |
779 | nbytes = symbuf_left; | |
780 | memcpy (symbuf, stabs_data + symbuf_read, nbytes); | |
781 | } | |
782 | else if (symbuf_sections == NULL) | |
783 | { | |
784 | count = sizeof (symbuf); | |
785 | nbytes = bfd_bread (symbuf, count, sym_bfd); | |
786 | } | |
c906108c SS |
787 | else |
788 | { | |
789 | if (symbuf_left <= 0) | |
790 | { | |
791 | file_ptr filepos = symbuf_sections->section->filepos; | |
9a619af0 | 792 | |
c906108c SS |
793 | if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0) |
794 | perror_with_name (bfd_get_filename (sym_bfd)); | |
795 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section); | |
796 | symbol_table_offset = filepos - symbuf_read; | |
797 | symbuf_sections = symbuf_sections->next; | |
798 | } | |
799 | ||
800 | count = symbuf_left; | |
801 | if (count > sizeof (symbuf)) | |
802 | count = sizeof (symbuf); | |
086df311 | 803 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
c906108c SS |
804 | } |
805 | ||
c906108c SS |
806 | if (nbytes < 0) |
807 | perror_with_name (bfd_get_filename (sym_bfd)); | |
808 | else if (nbytes == 0) | |
8a3fe4f8 | 809 | error (_("Premature end of file reading symbol table")); |
c906108c SS |
810 | symbuf_end = nbytes / symbol_size; |
811 | symbuf_idx = 0; | |
812 | symbuf_left -= nbytes; | |
813 | symbuf_read += nbytes; | |
814 | } | |
815 | ||
086df311 DJ |
816 | static void |
817 | stabs_seek (int sym_offset) | |
818 | { | |
819 | if (stabs_data) | |
820 | { | |
821 | symbuf_read += sym_offset; | |
822 | symbuf_left -= sym_offset; | |
823 | } | |
824 | else | |
825 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); | |
826 | } | |
827 | ||
c906108c SS |
828 | #define INTERNALIZE_SYMBOL(intern, extern, abfd) \ |
829 | { \ | |
c906108c | 830 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \ |
83b94be5 AM |
831 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \ |
832 | (intern).n_other = 0; \ | |
c906108c | 833 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \ |
40b3352b L |
834 | if (bfd_get_sign_extend_vma (abfd)) \ |
835 | (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \ | |
836 | else \ | |
837 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \ | |
c906108c SS |
838 | } |
839 | ||
840 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
841 | that hasn't been swapped. Swap the symbol at the same time | |
842 | that symbuf_idx is incremented. */ | |
843 | ||
844 | /* dbx allows the text of a symbol name to be continued into the | |
845 | next symbol name! When such a continuation is encountered | |
846 | (a \ at the end of the text of a name) | |
847 | call this function to get the continuation. */ | |
848 | ||
a121b7c1 | 849 | static const char * |
fba45db2 | 850 | dbx_next_symbol_text (struct objfile *objfile) |
c906108c SS |
851 | { |
852 | struct internal_nlist nlist; | |
853 | ||
854 | if (symbuf_idx == symbuf_end) | |
855 | fill_symbuf (symfile_bfd); | |
856 | ||
857 | symnum++; | |
c5aa993b | 858 | INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], symfile_bfd); |
c906108c SS |
859 | OBJSTAT (objfile, n_stabs++); |
860 | ||
861 | symbuf_idx++; | |
862 | ||
863 | return nlist.n_strx + stringtab_global + file_string_table_offset; | |
864 | } | |
865 | \f | |
c906108c SS |
866 | |
867 | /* Given a name, value pair, find the corresponding | |
868 | bincl in the list. Return the partial symtab associated | |
869 | with that header_file_location. */ | |
870 | ||
871 | static struct partial_symtab * | |
a121b7c1 | 872 | find_corresponding_bincl_psymtab (const char *name, int instance) |
c906108c | 873 | { |
52941706 | 874 | for (const header_file_location &bincl : *bincl_list) |
bf259e25 TT |
875 | if (bincl.instance == instance |
876 | && strcmp (name, bincl.name) == 0) | |
877 | return bincl.pst; | |
c906108c | 878 | |
23136709 | 879 | repeated_header_complaint (name, symnum); |
c906108c SS |
880 | return (struct partial_symtab *) 0; |
881 | } | |
882 | ||
6a34fd2f EZ |
883 | /* Set namestring based on nlist. If the string table index is invalid, |
884 | give a fake name, and print a single error message per symbol file read, | |
885 | rather than abort the symbol reading or flood the user with messages. */ | |
886 | ||
a121b7c1 | 887 | static const char * |
83b94be5 | 888 | set_namestring (struct objfile *objfile, const struct internal_nlist *nlist) |
6a34fd2f | 889 | { |
a121b7c1 | 890 | const char *namestring; |
6a34fd2f | 891 | |
5409dacf JK |
892 | if (nlist->n_strx + file_string_table_offset |
893 | >= DBX_STRINGTAB_SIZE (objfile) | |
894 | || nlist->n_strx + file_string_table_offset < nlist->n_strx) | |
6a34fd2f | 895 | { |
b98664d3 | 896 | complaint (_("bad string table offset in symbol %d"), |
23136709 | 897 | symnum); |
6a34fd2f EZ |
898 | namestring = "<bad string table offset>"; |
899 | } | |
900 | else | |
83b94be5 AM |
901 | namestring = (nlist->n_strx + file_string_table_offset |
902 | + DBX_STRINGTAB (objfile)); | |
6a34fd2f EZ |
903 | return namestring; |
904 | } | |
905 | ||
a78f21af | 906 | static CORE_ADDR |
a121b7c1 | 907 | find_stab_function_addr (const char *namestring, const char *filename, |
4867e41e DM |
908 | struct objfile *objfile) |
909 | { | |
3b7344d5 | 910 | struct bound_minimal_symbol msym; |
4867e41e DM |
911 | int n; |
912 | ||
a121b7c1 PA |
913 | const char *colon = strchr (namestring, ':'); |
914 | if (colon == NULL) | |
915 | n = 0; | |
916 | else | |
917 | n = colon - namestring; | |
918 | ||
919 | char *p = (char *) alloca (n + 2); | |
4867e41e DM |
920 | strncpy (p, namestring, n); |
921 | p[n] = 0; | |
922 | ||
923 | msym = lookup_minimal_symbol (p, filename, objfile); | |
3b7344d5 | 924 | if (msym.minsym == NULL) |
4867e41e DM |
925 | { |
926 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
927 | try again with an appended underscore if the minimal symbol | |
928 | was not found. */ | |
929 | p[n] = '_'; | |
930 | p[n + 1] = 0; | |
931 | msym = lookup_minimal_symbol (p, filename, objfile); | |
932 | } | |
933 | ||
3b7344d5 | 934 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 935 | { |
0963b4bd | 936 | /* Try again without the filename. */ |
4867e41e DM |
937 | p[n] = 0; |
938 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
939 | } | |
3b7344d5 | 940 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 941 | { |
0963b4bd | 942 | /* And try again for Sun Fortran, but without the filename. */ |
4867e41e DM |
943 | p[n] = '_'; |
944 | p[n + 1] = 0; | |
945 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
946 | } | |
947 | ||
77e371c0 | 948 | return msym.minsym == NULL ? 0 : BMSYMBOL_VALUE_ADDRESS (msym); |
4867e41e | 949 | } |
4867e41e | 950 | |
23136709 KB |
951 | static void |
952 | function_outside_compilation_unit_complaint (const char *arg1) | |
953 | { | |
b98664d3 | 954 | complaint (_("function `%s' appears to be defined " |
3e43a32a | 955 | "outside of all compilation units"), |
23136709 KB |
956 | arg1); |
957 | } | |
958 | ||
d4f3574e | 959 | /* Setup partial_symtab's describing each source file for which |
0963b4bd | 960 | debugging information is available. */ |
c906108c SS |
961 | |
962 | static void | |
8dddcb8f | 963 | read_dbx_symtab (minimal_symbol_reader &reader, struct objfile *objfile) |
c906108c | 964 | { |
5e2b427d | 965 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0963b4bd | 966 | struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch. */ |
c906108c | 967 | struct internal_nlist nlist; |
d4f3574e SS |
968 | CORE_ADDR text_addr; |
969 | int text_size; | |
a121b7c1 | 970 | const char *sym_name; |
71c25dea | 971 | int sym_len; |
c906108c | 972 | |
a121b7c1 | 973 | const char *namestring; |
c906108c SS |
974 | int nsl; |
975 | int past_first_source_file = 0; | |
c906108c | 976 | CORE_ADDR last_function_start = 0; |
c906108c SS |
977 | bfd *abfd; |
978 | int textlow_not_set; | |
7c8a5605 | 979 | int data_sect_index; |
c906108c | 980 | |
0963b4bd | 981 | /* Current partial symtab. */ |
c906108c SS |
982 | struct partial_symtab *pst; |
983 | ||
0963b4bd | 984 | /* List of current psymtab's include files. */ |
0d5cff50 | 985 | const char **psymtab_include_list; |
c906108c SS |
986 | int includes_allocated; |
987 | int includes_used; | |
988 | ||
0963b4bd | 989 | /* Index within current psymtab dependency list. */ |
c906108c SS |
990 | struct partial_symtab **dependency_list; |
991 | int dependencies_used, dependencies_allocated; | |
992 | ||
d4f3574e SS |
993 | text_addr = DBX_TEXT_ADDR (objfile); |
994 | text_size = DBX_TEXT_SIZE (objfile); | |
995 | ||
c906108c SS |
996 | /* FIXME. We probably want to change stringtab_global rather than add this |
997 | while processing every symbol entry. FIXME. */ | |
998 | file_string_table_offset = 0; | |
999 | next_file_string_table_offset = 0; | |
1000 | ||
1001 | stringtab_global = DBX_STRINGTAB (objfile); | |
c5aa993b | 1002 | |
c906108c SS |
1003 | pst = (struct partial_symtab *) 0; |
1004 | ||
1005 | includes_allocated = 30; | |
1006 | includes_used = 0; | |
0d5cff50 DE |
1007 | psymtab_include_list = (const char **) alloca (includes_allocated * |
1008 | sizeof (const char *)); | |
c906108c SS |
1009 | |
1010 | dependencies_allocated = 30; | |
1011 | dependencies_used = 0; | |
1012 | dependency_list = | |
1013 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1014 | sizeof (struct partial_symtab *)); | |
1015 | ||
1016 | /* Init bincl list */ | |
bf259e25 TT |
1017 | std::vector<struct header_file_location> bincl_storage; |
1018 | scoped_restore restore_bincl_global | |
1019 | = make_scoped_restore (&bincl_list, &bincl_storage); | |
c906108c | 1020 | |
46212e0b | 1021 | set_last_source_file (NULL); |
c906108c | 1022 | |
96baa820 | 1023 | lowest_text_address = (CORE_ADDR) -1; |
c906108c | 1024 | |
0963b4bd | 1025 | symfile_bfd = objfile->obfd; /* For next_text_symbol. */ |
c906108c SS |
1026 | abfd = objfile->obfd; |
1027 | symbuf_end = symbuf_idx = 0; | |
1028 | next_symbol_text_func = dbx_next_symbol_text; | |
1029 | textlow_not_set = 1; | |
1030 | has_line_numbers = 0; | |
1031 | ||
4f49b26b JB |
1032 | /* FIXME: jimb/2003-09-12: We don't apply the right section's offset |
1033 | to global and static variables. The stab for a global or static | |
1034 | variable doesn't give us any indication of which section it's in, | |
1035 | so we can't tell immediately which offset in | |
1036 | objfile->section_offsets we should apply to the variable's | |
1037 | address. | |
1038 | ||
1039 | We could certainly find out which section contains the variable | |
1040 | by looking up the variable's unrelocated address with | |
1041 | find_pc_section, but that would be expensive; this is the | |
1042 | function that constructs the partial symbol tables by examining | |
1043 | every symbol in the entire executable, and it's | |
1044 | performance-critical. So that expense would not be welcome. I'm | |
1045 | not sure what to do about this at the moment. | |
1046 | ||
1047 | What we have done for years is to simply assume that the .data | |
1048 | section's offset is appropriate for all global and static | |
1049 | variables. Recently, this was expanded to fall back to the .bss | |
1050 | section's offset if there is no .data section, and then to the | |
1051 | .rodata section's offset. */ | |
7c8a5605 JB |
1052 | data_sect_index = objfile->sect_index_data; |
1053 | if (data_sect_index == -1) | |
1054 | data_sect_index = SECT_OFF_BSS (objfile); | |
2a13f9bc JB |
1055 | if (data_sect_index == -1) |
1056 | data_sect_index = SECT_OFF_RODATA (objfile); | |
d646061f JB |
1057 | |
1058 | /* If data_sect_index is still -1, that's okay. It's perfectly fine | |
1059 | for the file to have no .data, no .bss, and no .text at all, if | |
1060 | it also has no global or static variables. If it does, we will | |
1061 | get an internal error from an ANOFFSET macro below when we try to | |
1062 | use data_sect_index. */ | |
7c8a5605 | 1063 | |
c906108c SS |
1064 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
1065 | { | |
0963b4bd MS |
1066 | /* Get the symbol for this run and pull out some info. */ |
1067 | QUIT; /* Allow this to be interruptable. */ | |
c906108c SS |
1068 | if (symbuf_idx == symbuf_end) |
1069 | fill_symbuf (abfd); | |
1070 | bufp = &symbuf[symbuf_idx++]; | |
1071 | ||
1072 | /* | |
1073 | * Special case to speed up readin. | |
1074 | */ | |
1075 | if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE) | |
1076 | { | |
1077 | has_line_numbers = 1; | |
1078 | continue; | |
1079 | } | |
1080 | ||
1081 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
1082 | OBJSTAT (objfile, n_stabs++); | |
1083 | ||
1084 | /* Ok. There is a lot of code duplicated in the rest of this | |
1085 | switch statement (for efficiency reasons). Since I don't | |
1086 | like duplicating code, I will do my penance here, and | |
1087 | describe the code which is duplicated: | |
1088 | ||
c5aa993b JM |
1089 | *) The assignment to namestring. |
1090 | *) The call to strchr. | |
b021a221 | 1091 | *) The addition of a partial symbol the two partial |
c5aa993b | 1092 | symbol lists. This last is a large section of code, so |
0963b4bd | 1093 | I've imbedded it in the following macro. */ |
c5aa993b | 1094 | |
6a34fd2f EZ |
1095 | switch (nlist.n_type) |
1096 | { | |
6a34fd2f EZ |
1097 | /* |
1098 | * Standard, external, non-debugger, symbols | |
1099 | */ | |
1100 | ||
9ce5d3bb DE |
1101 | case N_TEXT | N_EXT: |
1102 | case N_NBTEXT | N_EXT: | |
6a34fd2f EZ |
1103 | goto record_it; |
1104 | ||
9ce5d3bb DE |
1105 | case N_DATA | N_EXT: |
1106 | case N_NBDATA | N_EXT: | |
6a34fd2f EZ |
1107 | goto record_it; |
1108 | ||
9ce5d3bb DE |
1109 | case N_BSS: |
1110 | case N_BSS | N_EXT: | |
1111 | case N_NBBSS | N_EXT: | |
1112 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
6a34fd2f EZ |
1113 | goto record_it; |
1114 | ||
9ce5d3bb | 1115 | case N_ABS | N_EXT: |
6a34fd2f | 1116 | record_it: |
83b94be5 | 1117 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1118 | |
8dddcb8f | 1119 | record_minimal_symbol (reader, namestring, nlist.n_value, |
6a34fd2f EZ |
1120 | nlist.n_type, objfile); /* Always */ |
1121 | continue; | |
1122 | ||
0963b4bd | 1123 | /* Standard, local, non-debugger, symbols. */ |
6a34fd2f | 1124 | |
9ce5d3bb | 1125 | case N_NBTEXT: |
6a34fd2f EZ |
1126 | |
1127 | /* We need to be able to deal with both N_FN or N_TEXT, | |
1128 | because we have no way of knowing whether the sys-supplied ld | |
1129 | or GNU ld was used to make the executable. Sequents throw | |
1130 | in another wrinkle -- they renumbered N_FN. */ | |
1131 | ||
9ce5d3bb DE |
1132 | case N_FN: |
1133 | case N_FN_SEQ: | |
1134 | case N_TEXT: | |
83b94be5 | 1135 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1136 | |
1137 | if ((namestring[0] == '-' && namestring[1] == 'l') | |
1138 | || (namestring[(nsl = strlen (namestring)) - 1] == 'o' | |
1139 | && namestring[nsl - 2] == '.')) | |
9ce5d3bb | 1140 | { |
2273f0ac TT |
1141 | nlist.n_value += ANOFFSET (objfile->section_offsets, |
1142 | SECT_OFF_TEXT (objfile)); | |
1143 | ||
9ce5d3bb DE |
1144 | if (past_first_source_file && pst |
1145 | /* The gould NP1 uses low values for .o and -l symbols | |
1146 | which are not the address. */ | |
1147 | && nlist.n_value >= pst->textlow) | |
1148 | { | |
8763cede DE |
1149 | dbx_end_psymtab (objfile, pst, psymtab_include_list, |
1150 | includes_used, symnum * symbol_size, | |
1151 | nlist.n_value > pst->texthigh | |
1152 | ? nlist.n_value : pst->texthigh, | |
1153 | dependency_list, dependencies_used, | |
1154 | textlow_not_set); | |
9ce5d3bb DE |
1155 | pst = (struct partial_symtab *) 0; |
1156 | includes_used = 0; | |
1157 | dependencies_used = 0; | |
578933ab | 1158 | has_line_numbers = 0; |
9ce5d3bb DE |
1159 | } |
1160 | else | |
1161 | past_first_source_file = 1; | |
9ce5d3bb | 1162 | } |
6a34fd2f | 1163 | else |
9ce5d3bb | 1164 | goto record_it; |
6a34fd2f EZ |
1165 | continue; |
1166 | ||
9ce5d3bb | 1167 | case N_DATA: |
6a34fd2f EZ |
1168 | goto record_it; |
1169 | ||
9ce5d3bb | 1170 | case N_UNDF | N_EXT: |
d4862372 JB |
1171 | /* The case (nlist.n_value != 0) is a "Fortran COMMON" symbol. |
1172 | We used to rely on the target to tell us whether it knows | |
1173 | where the symbol has been relocated to, but none of the | |
1174 | target implementations actually provided that operation. | |
1175 | So we just ignore the symbol, the same way we would do if | |
1176 | we had a target-side symbol lookup which returned no match. | |
1177 | ||
1178 | All other symbols (with nlist.n_value == 0), are really | |
1179 | undefined, and so we ignore them too. */ | |
1180 | continue; | |
6a34fd2f | 1181 | |
9ce5d3bb | 1182 | case N_UNDF: |
6a34fd2f | 1183 | if (processing_acc_compilation && nlist.n_strx == 1) |
9ce5d3bb DE |
1184 | { |
1185 | /* Deal with relative offsets in the string table | |
1186 | used in ELF+STAB under Solaris. If we want to use the | |
1187 | n_strx field, which contains the name of the file, | |
1188 | we must adjust file_string_table_offset *before* calling | |
1189 | set_namestring(). */ | |
1190 | past_first_source_file = 1; | |
1191 | file_string_table_offset = next_file_string_table_offset; | |
1192 | next_file_string_table_offset = | |
1193 | file_string_table_offset + nlist.n_value; | |
1194 | if (next_file_string_table_offset < file_string_table_offset) | |
1195 | error (_("string table offset backs up at %d"), symnum); | |
1196 | /* FIXME -- replace error() with complaint. */ | |
1197 | continue; | |
1198 | } | |
6a34fd2f EZ |
1199 | continue; |
1200 | ||
1201 | /* Lots of symbol types we can just ignore. */ | |
1202 | ||
9ce5d3bb DE |
1203 | case N_ABS: |
1204 | case N_NBDATA: | |
1205 | case N_NBBSS: | |
6a34fd2f EZ |
1206 | continue; |
1207 | ||
0963b4bd | 1208 | /* Keep going . . . */ |
6a34fd2f EZ |
1209 | |
1210 | /* | |
1211 | * Special symbol types for GNU | |
1212 | */ | |
9ce5d3bb DE |
1213 | case N_INDR: |
1214 | case N_INDR | N_EXT: | |
1215 | case N_SETA: | |
1216 | case N_SETA | N_EXT: | |
1217 | case N_SETT: | |
1218 | case N_SETT | N_EXT: | |
1219 | case N_SETD: | |
1220 | case N_SETD | N_EXT: | |
1221 | case N_SETB: | |
1222 | case N_SETB | N_EXT: | |
1223 | case N_SETV: | |
6a34fd2f EZ |
1224 | continue; |
1225 | ||
1226 | /* | |
1227 | * Debugger symbols | |
1228 | */ | |
1229 | ||
9ce5d3bb | 1230 | case N_SO: |
6a34fd2f EZ |
1231 | { |
1232 | CORE_ADDR valu; | |
1233 | static int prev_so_symnum = -10; | |
1234 | static int first_so_symnum; | |
0ba1096a | 1235 | const char *p; |
a121b7c1 | 1236 | static const char *dirname_nso; |
6a34fd2f EZ |
1237 | int prev_textlow_not_set; |
1238 | ||
063e58ba MD |
1239 | valu = nlist.n_value + ANOFFSET (objfile->section_offsets, |
1240 | SECT_OFF_TEXT (objfile)); | |
6a34fd2f EZ |
1241 | |
1242 | prev_textlow_not_set = textlow_not_set; | |
1243 | ||
6a34fd2f | 1244 | /* A zero value is probably an indication for the SunPRO 3.0 |
8763cede | 1245 | compiler. dbx_end_psymtab explicitly tests for zero, so |
6a34fd2f EZ |
1246 | don't relocate it. */ |
1247 | ||
203c3895 | 1248 | if (nlist.n_value == 0 |
5e2b427d | 1249 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
6a34fd2f EZ |
1250 | { |
1251 | textlow_not_set = 1; | |
1252 | valu = 0; | |
1253 | } | |
1254 | else | |
1255 | textlow_not_set = 0; | |
203c3895 | 1256 | |
6a34fd2f EZ |
1257 | past_first_source_file = 1; |
1258 | ||
1259 | if (prev_so_symnum != symnum - 1) | |
0963b4bd | 1260 | { /* Here if prev stab wasn't N_SO. */ |
6a34fd2f EZ |
1261 | first_so_symnum = symnum; |
1262 | ||
1263 | if (pst) | |
1264 | { | |
8763cede DE |
1265 | dbx_end_psymtab (objfile, pst, psymtab_include_list, |
1266 | includes_used, symnum * symbol_size, | |
1267 | valu > pst->texthigh | |
1268 | ? valu : pst->texthigh, | |
1269 | dependency_list, dependencies_used, | |
1270 | prev_textlow_not_set); | |
6a34fd2f EZ |
1271 | pst = (struct partial_symtab *) 0; |
1272 | includes_used = 0; | |
1273 | dependencies_used = 0; | |
578933ab | 1274 | has_line_numbers = 0; |
6a34fd2f EZ |
1275 | } |
1276 | } | |
1277 | ||
1278 | prev_so_symnum = symnum; | |
1279 | ||
0963b4bd | 1280 | /* End the current partial symtab and start a new one. */ |
6a34fd2f | 1281 | |
83b94be5 | 1282 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1283 | |
0963b4bd | 1284 | /* Null name means end of .o file. Don't start a new one. */ |
6a34fd2f EZ |
1285 | if (*namestring == '\000') |
1286 | continue; | |
1287 | ||
1288 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
1289 | The first one is a directory name; the second the file name. | |
1290 | If pst exists, is empty, and has a filename ending in '/', | |
0963b4bd | 1291 | we assume the previous N_SO was a directory name. */ |
6a34fd2f | 1292 | |
0ba1096a KT |
1293 | p = lbasename (namestring); |
1294 | if (p != namestring && *p == '\000') | |
57c22c6c BR |
1295 | { |
1296 | /* Save the directory name SOs locally, then save it into | |
0963b4bd | 1297 | the psymtab when it's created below. */ |
57c22c6c BR |
1298 | dirname_nso = namestring; |
1299 | continue; | |
1300 | } | |
6a34fd2f EZ |
1301 | |
1302 | /* Some other compilers (C++ ones in particular) emit useless | |
131fe1bb DE |
1303 | SOs for non-existant .c files. We ignore all subsequent SOs |
1304 | that immediately follow the first. */ | |
6a34fd2f EZ |
1305 | |
1306 | if (!pst) | |
57c22c6c | 1307 | { |
9ce5d3bb DE |
1308 | pst = start_psymtab (objfile, |
1309 | namestring, valu, | |
1310 | first_so_symnum * symbol_size, | |
af5bf4ad SM |
1311 | objfile->global_psymbols, |
1312 | objfile->static_psymbols); | |
57c22c6c BR |
1313 | pst->dirname = dirname_nso; |
1314 | dirname_nso = NULL; | |
1315 | } | |
6a34fd2f EZ |
1316 | continue; |
1317 | } | |
1318 | ||
9ce5d3bb | 1319 | case N_BINCL: |
6a34fd2f EZ |
1320 | { |
1321 | enum language tmp_language; | |
9a619af0 | 1322 | |
6a34fd2f EZ |
1323 | /* Add this bincl to the bincl_list for future EXCLs. No |
1324 | need to save the string; it'll be around until | |
0963b4bd | 1325 | read_dbx_symtab function returns. */ |
6a34fd2f | 1326 | |
83b94be5 | 1327 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1328 | tmp_language = deduce_language_from_filename (namestring); |
1329 | ||
1330 | /* Only change the psymtab's language if we've learned | |
1331 | something useful (eg. tmp_language is not language_unknown). | |
1332 | In addition, to match what start_subfile does, never change | |
1333 | from C++ to C. */ | |
1334 | if (tmp_language != language_unknown | |
1335 | && (tmp_language != language_c | |
1336 | || psymtab_language != language_cplus)) | |
d7f98cce | 1337 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1338 | |
1339 | if (pst == NULL) | |
9ce5d3bb DE |
1340 | { |
1341 | /* FIXME: we should not get here without a PST to work on. | |
1342 | Attempt to recover. */ | |
b98664d3 | 1343 | complaint (_("N_BINCL %s not in entries for " |
3e43a32a | 1344 | "any file, at symtab pos %d"), |
9ce5d3bb DE |
1345 | namestring, symnum); |
1346 | continue; | |
1347 | } | |
bf259e25 | 1348 | bincl_list->emplace_back (namestring, nlist.n_value, pst); |
6a34fd2f | 1349 | |
0963b4bd | 1350 | /* Mark down an include file in the current psymtab. */ |
6a34fd2f EZ |
1351 | |
1352 | goto record_include_file; | |
1353 | } | |
1354 | ||
9ce5d3bb | 1355 | case N_SOL: |
6a34fd2f EZ |
1356 | { |
1357 | enum language tmp_language; | |
6a34fd2f | 1358 | |
0963b4bd | 1359 | /* Mark down an include file in the current psymtab. */ |
83b94be5 | 1360 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1361 | tmp_language = deduce_language_from_filename (namestring); |
1362 | ||
1363 | /* Only change the psymtab's language if we've learned | |
1364 | something useful (eg. tmp_language is not language_unknown). | |
1365 | In addition, to match what start_subfile does, never change | |
1366 | from C++ to C. */ | |
1367 | if (tmp_language != language_unknown | |
1368 | && (tmp_language != language_c | |
1369 | || psymtab_language != language_cplus)) | |
d7f98cce | 1370 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1371 | |
1372 | /* In C++, one may expect the same filename to come round many | |
1373 | times, when code is coming alternately from the main file | |
0963b4bd | 1374 | and from inline functions in other files. So I check to see |
6a34fd2f EZ |
1375 | if this is a file we've seen before -- either the main |
1376 | source file, or a previously included file. | |
1377 | ||
1378 | This seems to be a lot of time to be spending on N_SOL, but | |
1379 | things like "break c-exp.y:435" need to work (I | |
1380 | suppose the psymtab_include_list could be hashed or put | |
1381 | in a binary tree, if profiling shows this is a major hog). */ | |
0ba1096a | 1382 | if (pst && filename_cmp (namestring, pst->filename) == 0) |
9ce5d3bb | 1383 | continue; |
6a34fd2f | 1384 | { |
aa1ee363 | 1385 | int i; |
9a619af0 | 1386 | |
6a34fd2f | 1387 | for (i = 0; i < includes_used; i++) |
0ba1096a | 1388 | if (filename_cmp (namestring, psymtab_include_list[i]) == 0) |
6a34fd2f EZ |
1389 | { |
1390 | i = -1; | |
1391 | break; | |
1392 | } | |
1393 | if (i == -1) | |
1394 | continue; | |
1395 | } | |
1396 | ||
9ce5d3bb | 1397 | record_include_file: |
6a34fd2f EZ |
1398 | |
1399 | psymtab_include_list[includes_used++] = namestring; | |
1400 | if (includes_used >= includes_allocated) | |
9ce5d3bb | 1401 | { |
0d5cff50 | 1402 | const char **orig = psymtab_include_list; |
6a34fd2f | 1403 | |
0d5cff50 DE |
1404 | psymtab_include_list = (const char **) |
1405 | alloca ((includes_allocated *= 2) * sizeof (const char *)); | |
9ce5d3bb | 1406 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 1407 | includes_used * sizeof (const char *)); |
9ce5d3bb | 1408 | } |
6a34fd2f EZ |
1409 | continue; |
1410 | } | |
0963b4bd MS |
1411 | case N_LSYM: /* Typedef or automatic variable. */ |
1412 | case N_STSYM: /* Data seg var -- static. */ | |
9ce5d3bb DE |
1413 | case N_LCSYM: /* BSS " */ |
1414 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
1415 | case N_NBSTS: /* Gould nobase. */ | |
1416 | case N_NBLCS: /* symbols. */ | |
1417 | case N_FUN: | |
1418 | case N_GSYM: /* Global (extern) variable; can be | |
063e58ba | 1419 | data or bss (sigh FIXME). */ |
6a34fd2f EZ |
1420 | |
1421 | /* Following may probably be ignored; I'll leave them here | |
1422 | for now (until I do Pascal and Modula 2 extensions). */ | |
1423 | ||
9ce5d3bb | 1424 | case N_PC: /* I may or may not need this; I |
063e58ba | 1425 | suspect not. */ |
0963b4bd | 1426 | case N_M2C: /* I suspect that I can ignore this here. */ |
9ce5d3bb | 1427 | case N_SCOPE: /* Same. */ |
131fe1bb | 1428 | { |
a121b7c1 | 1429 | const char *p; |
6a34fd2f | 1430 | |
83b94be5 | 1431 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1432 | |
1433 | /* See if this is an end of function stab. */ | |
1434 | if (pst && nlist.n_type == N_FUN && *namestring == '\000') | |
9ce5d3bb DE |
1435 | { |
1436 | CORE_ADDR valu; | |
1437 | ||
1438 | /* It's value is the size (in bytes) of the function for | |
1439 | function relative stabs, or the address of the function's | |
1440 | end for old style stabs. */ | |
1441 | valu = nlist.n_value + last_function_start; | |
1442 | if (pst->texthigh == 0 || valu > pst->texthigh) | |
1443 | pst->texthigh = valu; | |
1444 | break; | |
1445 | } | |
6a34fd2f EZ |
1446 | |
1447 | p = (char *) strchr (namestring, ':'); | |
1448 | if (!p) | |
0963b4bd | 1449 | continue; /* Not a debugging symbol. */ |
6a34fd2f | 1450 | |
71c25dea | 1451 | sym_len = 0; |
87bc73ea | 1452 | sym_name = NULL; /* pacify "gcc -Werror" */ |
71c25dea TT |
1453 | if (psymtab_language == language_cplus) |
1454 | { | |
2f408ecb PA |
1455 | std::string name (namestring, p - namestring); |
1456 | std::string new_name = cp_canonicalize_string (name.c_str ()); | |
1457 | if (!new_name.empty ()) | |
1458 | { | |
1459 | sym_len = new_name.length (); | |
224c3ddb | 1460 | sym_name = (char *) obstack_copy0 (&objfile->objfile_obstack, |
2f408ecb PA |
1461 | new_name.c_str (), |
1462 | sym_len); | |
1463 | } | |
1464 | } | |
71c25dea TT |
1465 | |
1466 | if (sym_len == 0) | |
1467 | { | |
1468 | sym_name = namestring; | |
1469 | sym_len = p - namestring; | |
1470 | } | |
1471 | ||
6a34fd2f EZ |
1472 | /* Main processing section for debugging symbols which |
1473 | the initial read through the symbol tables needs to worry | |
1474 | about. If we reach this point, the symbol which we are | |
1475 | considering is definitely one we are interested in. | |
1476 | p must also contain the (valid) index into the namestring | |
1477 | which indicates the debugging type symbol. */ | |
1478 | ||
1479 | switch (p[1]) | |
9ce5d3bb DE |
1480 | { |
1481 | case 'S': | |
1482 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1483 | data_sect_index); | |
1484 | ||
5e2b427d | 1485 | if (gdbarch_static_transform_name_p (gdbarch)) |
e81cff30 | 1486 | gdbarch_static_transform_name (gdbarch, namestring); |
9ce5d3bb | 1487 | |
04a679b8 | 1488 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1489 | VAR_DOMAIN, LOC_STATIC, |
1490 | &objfile->static_psymbols, | |
1762568f | 1491 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1492 | continue; |
131fe1bb | 1493 | |
9ce5d3bb DE |
1494 | case 'G': |
1495 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1496 | data_sect_index); | |
1497 | /* The addresses in these entries are reported to be | |
0963b4bd | 1498 | wrong. See the code that reads 'G's for symtabs. */ |
04a679b8 | 1499 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1500 | VAR_DOMAIN, LOC_STATIC, |
1501 | &objfile->global_psymbols, | |
1762568f | 1502 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1503 | continue; |
6a34fd2f | 1504 | |
9ce5d3bb DE |
1505 | case 'T': |
1506 | /* When a 'T' entry is defining an anonymous enum, it | |
1507 | may have a name which is the empty string, or a | |
1508 | single space. Since they're not really defining a | |
1509 | symbol, those shouldn't go in the partial symbol | |
1510 | table. We do pick up the elements of such enums at | |
1511 | 'check_enum:', below. */ | |
1512 | if (p >= namestring + 2 | |
1513 | || (p == namestring + 1 | |
1514 | && namestring[0] != ' ')) | |
1515 | { | |
04a679b8 | 1516 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1517 | STRUCT_DOMAIN, LOC_TYPEDEF, |
1518 | &objfile->static_psymbols, | |
1762568f | 1519 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1520 | if (p[2] == 't') |
1521 | { | |
1522 | /* Also a typedef with the same name. */ | |
04a679b8 | 1523 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1524 | VAR_DOMAIN, LOC_TYPEDEF, |
1525 | &objfile->static_psymbols, | |
1762568f | 1526 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1527 | p += 1; |
1528 | } | |
1529 | } | |
1530 | goto check_enum; | |
131fe1bb | 1531 | |
9ce5d3bb | 1532 | case 't': |
0963b4bd | 1533 | if (p != namestring) /* a name is there, not just :T... */ |
9ce5d3bb | 1534 | { |
04a679b8 | 1535 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1536 | VAR_DOMAIN, LOC_TYPEDEF, |
1537 | &objfile->static_psymbols, | |
1762568f | 1538 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1539 | } |
1540 | check_enum: | |
1541 | /* If this is an enumerated type, we need to | |
1542 | add all the enum constants to the partial symbol | |
1543 | table. This does not cover enums without names, e.g. | |
1544 | "enum {a, b} c;" in C, but fortunately those are | |
1545 | rare. There is no way for GDB to find those from the | |
1546 | enum type without spending too much time on it. Thus | |
1547 | to solve this problem, the compiler needs to put out the | |
1548 | enum in a nameless type. GCC2 does this. */ | |
1549 | ||
1550 | /* We are looking for something of the form | |
1551 | <name> ":" ("t" | "T") [<number> "="] "e" | |
1552 | {<constant> ":" <value> ","} ";". */ | |
1553 | ||
1554 | /* Skip over the colon and the 't' or 'T'. */ | |
1555 | p += 2; | |
1556 | /* This type may be given a number. Also, numbers can come | |
1557 | in pairs like (0,26). Skip over it. */ | |
1558 | while ((*p >= '0' && *p <= '9') | |
1559 | || *p == '(' || *p == ',' || *p == ')' | |
1560 | || *p == '=') | |
1561 | p++; | |
1562 | ||
1563 | if (*p++ == 'e') | |
1564 | { | |
1565 | /* The aix4 compiler emits extra crud before the members. */ | |
1566 | if (*p == '-') | |
1567 | { | |
1568 | /* Skip over the type (?). */ | |
1569 | while (*p != ':') | |
1570 | p++; | |
6a34fd2f | 1571 | |
9ce5d3bb | 1572 | /* Skip over the colon. */ |
6a34fd2f | 1573 | p++; |
9ce5d3bb | 1574 | } |
6a34fd2f | 1575 | |
9ce5d3bb DE |
1576 | /* We have found an enumerated type. */ |
1577 | /* According to comments in read_enum_type | |
1578 | a comma could end it instead of a semicolon. | |
1579 | I don't know where that happens. | |
1580 | Accept either. */ | |
1581 | while (*p && *p != ';' && *p != ',') | |
1582 | { | |
a121b7c1 | 1583 | const char *q; |
9ce5d3bb DE |
1584 | |
1585 | /* Check for and handle cretinous dbx symbol name | |
1586 | continuation! */ | |
1587 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
1588 | p = next_symbol_text (objfile); | |
1589 | ||
1590 | /* Point to the character after the name | |
1591 | of the enum constant. */ | |
1592 | for (q = p; *q && *q != ':'; q++) | |
1593 | ; | |
1594 | /* Note that the value doesn't matter for | |
1595 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 1596 | add_psymbol_to_list (p, q - p, 1, |
9ce5d3bb DE |
1597 | VAR_DOMAIN, LOC_CONST, |
1598 | &objfile->static_psymbols, 0, | |
1762568f | 1599 | psymtab_language, objfile); |
9ce5d3bb DE |
1600 | /* Point past the name. */ |
1601 | p = q; | |
1602 | /* Skip over the value. */ | |
1603 | while (*p && *p != ',') | |
1604 | p++; | |
1605 | /* Advance past the comma. */ | |
1606 | if (*p) | |
1607 | p++; | |
1608 | } | |
1609 | } | |
1610 | continue; | |
131fe1bb | 1611 | |
9ce5d3bb DE |
1612 | case 'c': |
1613 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 1614 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb | 1615 | VAR_DOMAIN, LOC_CONST, |
1762568f DE |
1616 | &objfile->static_psymbols, 0, |
1617 | psymtab_language, objfile); | |
9ce5d3bb | 1618 | continue; |
6a34fd2f | 1619 | |
9ce5d3bb DE |
1620 | case 'f': |
1621 | if (! pst) | |
1622 | { | |
1623 | int name_len = p - namestring; | |
224c3ddb | 1624 | char *name = (char *) xmalloc (name_len + 1); |
9a619af0 | 1625 | |
9ce5d3bb DE |
1626 | memcpy (name, namestring, name_len); |
1627 | name[name_len] = '\0'; | |
1628 | function_outside_compilation_unit_complaint (name); | |
1629 | xfree (name); | |
1630 | } | |
1631 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1632 | SECT_OFF_TEXT (objfile)); | |
0963b4bd | 1633 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1634 | last_function_name = namestring; |
1635 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1636 | value for the bottom of the text seg in those cases. */ |
9ce5d3bb DE |
1637 | if (nlist.n_value == ANOFFSET (objfile->section_offsets, |
1638 | SECT_OFF_TEXT (objfile)) | |
5e2b427d | 1639 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1640 | { |
1641 | CORE_ADDR minsym_valu = | |
1642 | find_stab_function_addr (namestring, | |
1643 | pst ? pst->filename : NULL, | |
1644 | objfile); | |
9a619af0 | 1645 | |
9ce5d3bb DE |
1646 | /* find_stab_function_addr will return 0 if the minimal |
1647 | symbol wasn't found. (Unfortunately, this might also | |
1648 | be a valid address.) Anyway, if it *does* return 0, | |
1649 | it is likely that the value was set correctly to begin | |
0963b4bd | 1650 | with... */ |
9ce5d3bb DE |
1651 | if (minsym_valu != 0) |
1652 | nlist.n_value = minsym_valu; | |
1653 | } | |
1654 | if (pst && textlow_not_set | |
5e2b427d | 1655 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1656 | { |
1657 | pst->textlow = nlist.n_value; | |
1658 | textlow_not_set = 0; | |
1659 | } | |
1660 | /* End kludge. */ | |
1661 | ||
1662 | /* Keep track of the start of the last function so we | |
1663 | can handle end of function symbols. */ | |
1664 | last_function_start = nlist.n_value; | |
1665 | ||
1666 | /* In reordered executables this function may lie outside | |
1667 | the bounds created by N_SO symbols. If that's the case | |
1668 | use the address of this function as the low bound for | |
1669 | the partial symbol table. */ | |
1670 | if (pst | |
1671 | && (textlow_not_set | |
1672 | || (nlist.n_value < pst->textlow | |
1673 | && (nlist.n_value | |
1674 | != ANOFFSET (objfile->section_offsets, | |
1675 | SECT_OFF_TEXT (objfile)))))) | |
1676 | { | |
1677 | pst->textlow = nlist.n_value; | |
1678 | textlow_not_set = 0; | |
1679 | } | |
04a679b8 | 1680 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1681 | VAR_DOMAIN, LOC_BLOCK, |
1682 | &objfile->static_psymbols, | |
1762568f | 1683 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1684 | continue; |
6a34fd2f | 1685 | |
9ce5d3bb DE |
1686 | /* Global functions were ignored here, but now they |
1687 | are put into the global psymtab like one would expect. | |
1688 | They're also in the minimal symbol table. */ | |
1689 | case 'F': | |
1690 | if (! pst) | |
1691 | { | |
1692 | int name_len = p - namestring; | |
224c3ddb | 1693 | char *name = (char *) xmalloc (name_len + 1); |
9a619af0 | 1694 | |
9ce5d3bb DE |
1695 | memcpy (name, namestring, name_len); |
1696 | name[name_len] = '\0'; | |
1697 | function_outside_compilation_unit_complaint (name); | |
1698 | xfree (name); | |
1699 | } | |
1700 | nlist.n_value += ANOFFSET (objfile->section_offsets, | |
1701 | SECT_OFF_TEXT (objfile)); | |
0963b4bd | 1702 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1703 | last_function_name = namestring; |
1704 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1705 | value for the bottom of the text seg in those cases. */ |
9ce5d3bb DE |
1706 | if (nlist.n_value == ANOFFSET (objfile->section_offsets, |
1707 | SECT_OFF_TEXT (objfile)) | |
5e2b427d | 1708 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1709 | { |
1710 | CORE_ADDR minsym_valu = | |
1711 | find_stab_function_addr (namestring, | |
1712 | pst ? pst->filename : NULL, | |
1713 | objfile); | |
9a619af0 | 1714 | |
9ce5d3bb DE |
1715 | /* find_stab_function_addr will return 0 if the minimal |
1716 | symbol wasn't found. (Unfortunately, this might also | |
1717 | be a valid address.) Anyway, if it *does* return 0, | |
1718 | it is likely that the value was set correctly to begin | |
0963b4bd | 1719 | with... */ |
9ce5d3bb DE |
1720 | if (minsym_valu != 0) |
1721 | nlist.n_value = minsym_valu; | |
1722 | } | |
1723 | if (pst && textlow_not_set | |
5e2b427d | 1724 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb DE |
1725 | { |
1726 | pst->textlow = nlist.n_value; | |
1727 | textlow_not_set = 0; | |
1728 | } | |
1729 | /* End kludge. */ | |
1730 | ||
1731 | /* Keep track of the start of the last function so we | |
1732 | can handle end of function symbols. */ | |
1733 | last_function_start = nlist.n_value; | |
1734 | ||
1735 | /* In reordered executables this function may lie outside | |
1736 | the bounds created by N_SO symbols. If that's the case | |
1737 | use the address of this function as the low bound for | |
1738 | the partial symbol table. */ | |
1739 | if (pst | |
1740 | && (textlow_not_set | |
1741 | || (nlist.n_value < pst->textlow | |
1742 | && (nlist.n_value | |
1743 | != ANOFFSET (objfile->section_offsets, | |
1744 | SECT_OFF_TEXT (objfile)))))) | |
1745 | { | |
1746 | pst->textlow = nlist.n_value; | |
1747 | textlow_not_set = 0; | |
1748 | } | |
04a679b8 | 1749 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb DE |
1750 | VAR_DOMAIN, LOC_BLOCK, |
1751 | &objfile->global_psymbols, | |
1762568f | 1752 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1753 | continue; |
6a34fd2f | 1754 | |
9ce5d3bb DE |
1755 | /* Two things show up here (hopefully); static symbols of |
1756 | local scope (static used inside braces) or extensions | |
1757 | of structure symbols. We can ignore both. */ | |
1758 | case 'V': | |
1759 | case '(': | |
1760 | case '0': | |
1761 | case '1': | |
1762 | case '2': | |
1763 | case '3': | |
1764 | case '4': | |
1765 | case '5': | |
1766 | case '6': | |
1767 | case '7': | |
1768 | case '8': | |
1769 | case '9': | |
1770 | case '-': | |
0963b4bd | 1771 | case '#': /* For symbol identification (used in live ranges). */ |
9ce5d3bb | 1772 | continue; |
6a34fd2f | 1773 | |
9ce5d3bb DE |
1774 | case ':': |
1775 | /* It is a C++ nested symbol. We don't need to record it | |
1776 | (I don't think); if we try to look up foo::bar::baz, | |
1777 | then symbols for the symtab containing foo should get | |
1778 | read in, I think. */ | |
1779 | /* Someone says sun cc puts out symbols like | |
1780 | /foo/baz/maclib::/usr/local/bin/maclib, | |
1781 | which would get here with a symbol type of ':'. */ | |
1782 | continue; | |
6a34fd2f | 1783 | |
9ce5d3bb DE |
1784 | default: |
1785 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
1786 | of a continued stab can show up here. The question is | |
1787 | whether they ever can mimic a normal stab--it would be | |
1788 | nice if not, since we certainly don't want to spend the | |
1789 | time searching to the end of every string looking for | |
1790 | a backslash. */ | |
6a34fd2f | 1791 | |
b98664d3 | 1792 | complaint (_("unknown symbol descriptor `%c'"), |
9ce5d3bb DE |
1793 | p[1]); |
1794 | ||
1795 | /* Ignore it; perhaps it is an extension that we don't | |
1796 | know about. */ | |
1797 | continue; | |
1798 | } | |
131fe1bb | 1799 | } |
6a34fd2f | 1800 | |
9ce5d3bb | 1801 | case N_EXCL: |
6a34fd2f | 1802 | |
83b94be5 | 1803 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1804 | |
1805 | /* Find the corresponding bincl and mark that psymtab on the | |
0963b4bd | 1806 | psymtab dependency list. */ |
6a34fd2f EZ |
1807 | { |
1808 | struct partial_symtab *needed_pst = | |
1809 | find_corresponding_bincl_psymtab (namestring, nlist.n_value); | |
1810 | ||
1811 | /* If this include file was defined earlier in this file, | |
1812 | leave it alone. */ | |
1813 | if (needed_pst == pst) | |
1814 | continue; | |
1815 | ||
1816 | if (needed_pst) | |
1817 | { | |
1818 | int i; | |
1819 | int found = 0; | |
1820 | ||
1821 | for (i = 0; i < dependencies_used; i++) | |
1822 | if (dependency_list[i] == needed_pst) | |
1823 | { | |
1824 | found = 1; | |
1825 | break; | |
1826 | } | |
1827 | ||
1828 | /* If it's already in the list, skip the rest. */ | |
1829 | if (found) | |
1830 | continue; | |
1831 | ||
1832 | dependency_list[dependencies_used++] = needed_pst; | |
1833 | if (dependencies_used >= dependencies_allocated) | |
1834 | { | |
1835 | struct partial_symtab **orig = dependency_list; | |
9a619af0 | 1836 | |
6a34fd2f EZ |
1837 | dependency_list = |
1838 | (struct partial_symtab **) | |
1839 | alloca ((dependencies_allocated *= 2) | |
1840 | * sizeof (struct partial_symtab *)); | |
4efb68b1 | 1841 | memcpy (dependency_list, orig, |
6a34fd2f EZ |
1842 | (dependencies_used |
1843 | * sizeof (struct partial_symtab *))); | |
1844 | #ifdef DEBUG_INFO | |
063e58ba | 1845 | fprintf_unfiltered (gdb_stderr, |
3e43a32a MS |
1846 | "Had to reallocate " |
1847 | "dependency list.\n"); | |
063e58ba MD |
1848 | fprintf_unfiltered (gdb_stderr, |
1849 | "New dependencies allocated: %d\n", | |
6a34fd2f EZ |
1850 | dependencies_allocated); |
1851 | #endif | |
1852 | } | |
1853 | } | |
1854 | } | |
1855 | continue; | |
1856 | ||
9ce5d3bb | 1857 | case N_ENDM: |
6a34fd2f | 1858 | /* Solaris 2 end of module, finish current partial symbol table. |
8763cede | 1859 | dbx_end_psymtab will set pst->texthigh to the proper value, which |
6a34fd2f EZ |
1860 | is necessary if a module compiled without debugging info |
1861 | follows this module. */ | |
5e2b427d | 1862 | if (pst && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1863 | { |
8763cede DE |
1864 | dbx_end_psymtab (objfile, pst, |
1865 | psymtab_include_list, includes_used, | |
1866 | symnum * symbol_size, | |
1867 | (CORE_ADDR) 0, dependency_list, | |
1868 | dependencies_used, textlow_not_set); | |
9ce5d3bb DE |
1869 | pst = (struct partial_symtab *) 0; |
1870 | includes_used = 0; | |
1871 | dependencies_used = 0; | |
578933ab | 1872 | has_line_numbers = 0; |
9ce5d3bb | 1873 | } |
6a34fd2f | 1874 | continue; |
c906108c | 1875 | |
9ce5d3bb | 1876 | case N_RBRAC: |
6a34fd2f EZ |
1877 | #ifdef HANDLE_RBRAC |
1878 | HANDLE_RBRAC (nlist.n_value); | |
1879 | continue; | |
1880 | #endif | |
9ce5d3bb DE |
1881 | case N_EINCL: |
1882 | case N_DSLINE: | |
1883 | case N_BSLINE: | |
1884 | case N_SSYM: /* Claim: Structure or union element. | |
063e58ba | 1885 | Hopefully, I can ignore this. */ |
0963b4bd | 1886 | case N_ENTRY: /* Alternate entry point; can ignore. */ |
9ce5d3bb DE |
1887 | case N_MAIN: /* Can definitely ignore this. */ |
1888 | case N_CATCH: /* These are GNU C++ extensions */ | |
0963b4bd | 1889 | case N_EHDECL: /* that can safely be ignored here. */ |
9ce5d3bb DE |
1890 | case N_LENG: |
1891 | case N_BCOMM: | |
1892 | case N_ECOMM: | |
1893 | case N_ECOML: | |
1894 | case N_FNAME: | |
1895 | case N_SLINE: | |
1896 | case N_RSYM: | |
1897 | case N_PSYM: | |
ec48dc8b PM |
1898 | case N_BNSYM: |
1899 | case N_ENSYM: | |
9ce5d3bb DE |
1900 | case N_LBRAC: |
1901 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
1902 | case N_DEFD: /* GNU Modula-2 */ | |
1903 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
1904 | ||
0963b4bd | 1905 | case N_OBJ: /* Useless types from Solaris. */ |
9ce5d3bb DE |
1906 | case N_OPT: |
1907 | case N_PATCH: | |
0963b4bd | 1908 | /* These symbols aren't interesting; don't worry about them. */ |
6a34fd2f EZ |
1909 | continue; |
1910 | ||
9ce5d3bb | 1911 | default: |
6a34fd2f EZ |
1912 | /* If we haven't found it yet, ignore it. It's probably some |
1913 | new type we don't know about yet. */ | |
bb599908 | 1914 | unknown_symtype_complaint (hex_string (nlist.n_type)); |
6a34fd2f EZ |
1915 | continue; |
1916 | } | |
c906108c SS |
1917 | } |
1918 | ||
1919 | /* If there's stuff to be cleaned up, clean it up. */ | |
c906108c SS |
1920 | if (pst) |
1921 | { | |
1922 | /* Don't set pst->texthigh lower than it already is. */ | |
1923 | CORE_ADDR text_end = | |
6a34fd2f | 1924 | (lowest_text_address == (CORE_ADDR) -1 |
063e58ba MD |
1925 | ? (text_addr + ANOFFSET (objfile->section_offsets, |
1926 | SECT_OFF_TEXT (objfile))) | |
6a34fd2f EZ |
1927 | : lowest_text_address) |
1928 | + text_size; | |
c906108c | 1929 | |
8763cede DE |
1930 | dbx_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
1931 | symnum * symbol_size, | |
1932 | text_end > pst->texthigh ? text_end : pst->texthigh, | |
1933 | dependency_list, dependencies_used, textlow_not_set); | |
c906108c | 1934 | } |
c906108c SS |
1935 | } |
1936 | ||
1937 | /* Allocate and partially fill a partial symtab. It will be | |
1938 | completely filled at the end of the symbol list. | |
1939 | ||
1940 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1941 | is the address relative to which its symbols are (incremental) or 0 | |
0963b4bd | 1942 | (normal). */ |
c906108c | 1943 | |
d4f3574e | 1944 | static struct partial_symtab * |
a121b7c1 | 1945 | start_psymtab (struct objfile *objfile, const char *filename, CORE_ADDR textlow, |
af5bf4ad SM |
1946 | int ldsymoff, std::vector<partial_symbol *> &global_psymbols, |
1947 | std::vector<partial_symbol *> &static_psymbols) | |
c906108c SS |
1948 | { |
1949 | struct partial_symtab *result = | |
18a94d75 | 1950 | start_psymtab_common (objfile, filename, textlow, |
af5bf4ad | 1951 | global_psymbols, static_psymbols); |
c906108c | 1952 | |
8d749320 SM |
1953 | result->read_symtab_private = |
1954 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 1955 | LDSYMOFF (result) = ldsymoff; |
257e7a09 | 1956 | result->read_symtab = dbx_read_symtab; |
c5aa993b JM |
1957 | SYMBOL_SIZE (result) = symbol_size; |
1958 | SYMBOL_OFFSET (result) = symbol_table_offset; | |
1959 | STRING_OFFSET (result) = string_table_offset; | |
1960 | FILE_STRING_OFFSET (result) = file_string_table_offset; | |
c906108c | 1961 | |
0963b4bd | 1962 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c | 1963 | psymtab_language = deduce_language_from_filename (filename); |
5ffa0793 | 1964 | PST_LANGUAGE (result) = psymtab_language; |
c906108c SS |
1965 | |
1966 | return result; | |
1967 | } | |
1968 | ||
0963b4bd | 1969 | /* Close off the current usage of PST. |
c906108c SS |
1970 | Returns PST or NULL if the partial symtab was empty and thrown away. |
1971 | ||
1972 | FIXME: List variables and peculiarities of same. */ | |
1973 | ||
1974 | struct partial_symtab * | |
8763cede DE |
1975 | dbx_end_psymtab (struct objfile *objfile, struct partial_symtab *pst, |
1976 | const char **include_list, int num_includes, | |
1977 | int capping_symbol_offset, CORE_ADDR capping_text, | |
1978 | struct partial_symtab **dependency_list, | |
1979 | int number_dependencies, | |
1980 | int textlow_not_set) | |
c906108c SS |
1981 | { |
1982 | int i; | |
5e2b427d | 1983 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
1984 | |
1985 | if (capping_symbol_offset != -1) | |
c5aa993b | 1986 | LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst); |
5afc051b | 1987 | pst->texthigh = capping_text; |
c906108c | 1988 | |
c906108c SS |
1989 | /* Under Solaris, the N_SO symbols always have a value of 0, |
1990 | instead of the usual address of the .o file. Therefore, | |
1991 | we have to do some tricks to fill in texthigh and textlow. | |
6a34fd2f | 1992 | The first trick is: if we see a static |
c906108c SS |
1993 | or global function, and the textlow for the current pst |
1994 | is not set (ie: textlow_not_set), then we use that function's | |
1995 | address for the textlow of the pst. */ | |
1996 | ||
1997 | /* Now, to fill in texthigh, we remember the last function seen | |
6a34fd2f | 1998 | in the .o file. Also, there's a hack in |
c906108c SS |
1999 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field |
2000 | to here via the misc_info field. Therefore, we can fill in | |
2001 | a reliable texthigh by taking the address plus size of the | |
2002 | last function in the file. */ | |
2003 | ||
203c3895 | 2004 | if (pst->texthigh == 0 && last_function_name |
5e2b427d | 2005 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
c906108c | 2006 | { |
c906108c | 2007 | int n; |
3b7344d5 | 2008 | struct bound_minimal_symbol minsym; |
c906108c | 2009 | |
a121b7c1 PA |
2010 | const char *colon = strchr (last_function_name, ':'); |
2011 | if (colon == NULL) | |
2012 | n = 0; | |
2013 | else | |
2014 | n = colon - last_function_name; | |
2015 | char *p = (char *) alloca (n + 2); | |
c906108c SS |
2016 | strncpy (p, last_function_name, n); |
2017 | p[n] = 0; | |
c5aa993b | 2018 | |
c906108c | 2019 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
3b7344d5 | 2020 | if (minsym.minsym == NULL) |
c906108c SS |
2021 | { |
2022 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
2023 | try again with an appended underscore if the minimal symbol | |
2024 | was not found. */ | |
2025 | p[n] = '_'; | |
2026 | p[n + 1] = 0; | |
2027 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); | |
2028 | } | |
2029 | ||
3b7344d5 | 2030 | if (minsym.minsym) |
77e371c0 | 2031 | pst->texthigh = (BMSYMBOL_VALUE_ADDRESS (minsym) |
3b7344d5 | 2032 | + MSYMBOL_SIZE (minsym.minsym)); |
c906108c SS |
2033 | |
2034 | last_function_name = NULL; | |
2035 | } | |
2036 | ||
5e2b427d | 2037 | if (!gdbarch_sofun_address_maybe_missing (gdbarch)) |
203c3895 | 2038 | ; |
0963b4bd | 2039 | /* This test will be true if the last .o file is only data. */ |
203c3895 | 2040 | else if (textlow_not_set) |
5afc051b | 2041 | pst->textlow = pst->texthigh; |
c906108c SS |
2042 | else |
2043 | { | |
2044 | struct partial_symtab *p1; | |
2045 | ||
2046 | /* If we know our own starting text address, then walk through all other | |
c5aa993b JM |
2047 | psymtabs for this objfile, and if any didn't know their ending text |
2048 | address, set it to our starting address. Take care to not set our | |
2049 | own ending address to our starting address, nor to set addresses on | |
2050 | `dependency' files that have both textlow and texthigh zero. */ | |
c906108c SS |
2051 | |
2052 | ALL_OBJFILE_PSYMTABS (objfile, p1) | |
c5aa993b | 2053 | { |
5afc051b | 2054 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) |
c5aa993b | 2055 | { |
5afc051b | 2056 | p1->texthigh = pst->textlow; |
0963b4bd MS |
2057 | /* If this file has only data, then make textlow match |
2058 | texthigh. */ | |
5afc051b JB |
2059 | if (p1->textlow == 0) |
2060 | p1->textlow = p1->texthigh; | |
c5aa993b JM |
2061 | } |
2062 | } | |
c906108c SS |
2063 | } |
2064 | ||
2065 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
c906108c | 2066 | |
8763cede | 2067 | end_psymtab_common (objfile, pst); |
c906108c SS |
2068 | |
2069 | pst->number_of_dependencies = number_dependencies; | |
2070 | if (number_dependencies) | |
2071 | { | |
8d749320 SM |
2072 | pst->dependencies = XOBNEWVEC (&objfile->objfile_obstack, |
2073 | struct partial_symtab *, | |
2074 | number_dependencies); | |
c906108c | 2075 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2076 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2077 | } |
2078 | else | |
2079 | pst->dependencies = 0; | |
2080 | ||
2081 | for (i = 0; i < num_includes; i++) | |
2082 | { | |
2083 | struct partial_symtab *subpst = | |
9a619af0 | 2084 | allocate_psymtab (include_list[i], objfile); |
c906108c | 2085 | |
c906108c | 2086 | subpst->read_symtab_private = |
8d749320 | 2087 | XOBNEW (&objfile->objfile_obstack, struct symloc); |
c5aa993b JM |
2088 | LDSYMOFF (subpst) = |
2089 | LDSYMLEN (subpst) = | |
5afc051b JB |
2090 | subpst->textlow = |
2091 | subpst->texthigh = 0; | |
c906108c SS |
2092 | |
2093 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2094 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 SM |
2095 | subpst->dependencies = |
2096 | XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
c906108c SS |
2097 | subpst->dependencies[0] = pst; |
2098 | subpst->number_of_dependencies = 1; | |
2099 | ||
2100 | subpst->globals_offset = | |
2101 | subpst->n_global_syms = | |
c5aa993b JM |
2102 | subpst->statics_offset = |
2103 | subpst->n_static_syms = 0; | |
c906108c SS |
2104 | |
2105 | subpst->readin = 0; | |
43f3e411 | 2106 | subpst->compunit_symtab = 0; |
c906108c SS |
2107 | subpst->read_symtab = pst->read_symtab; |
2108 | } | |
2109 | ||
c906108c SS |
2110 | if (num_includes == 0 |
2111 | && number_dependencies == 0 | |
2112 | && pst->n_global_syms == 0 | |
2113 | && pst->n_static_syms == 0 | |
2114 | && has_line_numbers == 0) | |
2115 | { | |
2116 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2117 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2118 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b JM |
2119 | any symbols in them. There can be a lot of them. But this check |
2120 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
2121 | is not empty, but we don't realize that. Fixing that without slowing | |
2122 | things down might be tricky. */ | |
c906108c | 2123 | |
5c80ed9d | 2124 | discard_psymtab (objfile, pst); |
c906108c SS |
2125 | |
2126 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2127 | pst = NULL; |
c906108c SS |
2128 | } |
2129 | return pst; | |
2130 | } | |
2131 | \f | |
2132 | static void | |
5c80ed9d | 2133 | dbx_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 2134 | { |
c906108c | 2135 | int i; |
c5aa993b | 2136 | |
c906108c SS |
2137 | if (pst->readin) |
2138 | { | |
0963b4bd MS |
2139 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. " |
2140 | "Shouldn't happen.\n", | |
c5aa993b | 2141 | pst->filename); |
c906108c SS |
2142 | return; |
2143 | } | |
2144 | ||
0963b4bd | 2145 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
2146 | for (i = 0; i < pst->number_of_dependencies; i++) |
2147 | if (!pst->dependencies[i]->readin) | |
2148 | { | |
2149 | /* Inform about additional files that need to be read in. */ | |
2150 | if (info_verbose) | |
2151 | { | |
2152 | fputs_filtered (" ", gdb_stdout); | |
2153 | wrap_here (""); | |
2154 | fputs_filtered ("and ", gdb_stdout); | |
2155 | wrap_here (""); | |
2156 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 2157 | wrap_here (""); /* Flush output. */ |
c906108c SS |
2158 | gdb_flush (gdb_stdout); |
2159 | } | |
5c80ed9d | 2160 | dbx_psymtab_to_symtab_1 (objfile, pst->dependencies[i]); |
c906108c SS |
2161 | } |
2162 | ||
0963b4bd | 2163 | if (LDSYMLEN (pst)) /* Otherwise it's a dummy. */ |
c906108c SS |
2164 | { |
2165 | /* Init stuff necessary for reading in symbols */ | |
2166 | stabsread_init (); | |
2167 | buildsym_init (); | |
33c7c59d | 2168 | scoped_free_pendings free_pending; |
c906108c SS |
2169 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
2170 | symbol_size = SYMBOL_SIZE (pst); | |
2171 | ||
0963b4bd | 2172 | /* Read in this file's symbols. */ |
5c80ed9d TT |
2173 | bfd_seek (objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); |
2174 | read_ofile_symtab (objfile, pst); | |
c906108c SS |
2175 | } |
2176 | ||
2177 | pst->readin = 1; | |
2178 | } | |
2179 | ||
2180 | /* Read in all of the symbols for a given psymtab for real. | |
257e7a09 | 2181 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
2182 | |
2183 | static void | |
257e7a09 | 2184 | dbx_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 2185 | { |
257e7a09 | 2186 | if (self->readin) |
c906108c | 2187 | { |
0963b4bd MS |
2188 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. " |
2189 | "Shouldn't happen.\n", | |
257e7a09 | 2190 | self->filename); |
c906108c SS |
2191 | return; |
2192 | } | |
2193 | ||
257e7a09 | 2194 | if (LDSYMLEN (self) || self->number_of_dependencies) |
c906108c SS |
2195 | { |
2196 | /* Print the message now, before reading the string table, | |
c5aa993b | 2197 | to avoid disconcerting pauses. */ |
c906108c SS |
2198 | if (info_verbose) |
2199 | { | |
257e7a09 | 2200 | printf_filtered ("Reading in symbols for %s...", self->filename); |
c906108c SS |
2201 | gdb_flush (gdb_stdout); |
2202 | } | |
2203 | ||
c906108c SS |
2204 | next_symbol_text_func = dbx_next_symbol_text; |
2205 | ||
bf259e25 TT |
2206 | { |
2207 | scoped_restore restore_stabs_data = make_scoped_restore (&stabs_data); | |
2208 | gdb::unique_xmalloc_ptr<gdb_byte> data_holder; | |
2209 | if (DBX_STAB_SECTION (objfile)) | |
2210 | { | |
2211 | stabs_data | |
2212 | = symfile_relocate_debug_section (objfile, | |
2213 | DBX_STAB_SECTION (objfile), | |
2214 | NULL); | |
2215 | data_holder.reset (stabs_data); | |
2216 | } | |
c906108c | 2217 | |
bf259e25 TT |
2218 | dbx_psymtab_to_symtab_1 (objfile, self); |
2219 | } | |
086df311 | 2220 | |
c906108c SS |
2221 | /* Match with global symbols. This only needs to be done once, |
2222 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 2223 | scan_file_globals (objfile); |
c906108c SS |
2224 | |
2225 | /* Finish up the debug error message. */ | |
2226 | if (info_verbose) | |
2227 | printf_filtered ("done.\n"); | |
2228 | } | |
2229 | } | |
2230 | ||
0963b4bd | 2231 | /* Read in a defined section of a specific object file's symbols. */ |
c5aa993b | 2232 | |
c906108c | 2233 | static void |
5c80ed9d | 2234 | read_ofile_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 2235 | { |
a121b7c1 | 2236 | const char *namestring; |
52f0bd74 | 2237 | struct external_nlist *bufp; |
c906108c SS |
2238 | struct internal_nlist nlist; |
2239 | unsigned char type; | |
2240 | unsigned max_symnum; | |
52f0bd74 | 2241 | bfd *abfd; |
c906108c SS |
2242 | int sym_offset; /* Offset to start of symbols to read */ |
2243 | int sym_size; /* Size of symbols to read */ | |
2244 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
2245 | int text_size; /* Size of text segment for symbols */ | |
2246 | struct section_offsets *section_offsets; | |
2247 | ||
c5aa993b JM |
2248 | sym_offset = LDSYMOFF (pst); |
2249 | sym_size = LDSYMLEN (pst); | |
5afc051b JB |
2250 | text_offset = pst->textlow; |
2251 | text_size = pst->texthigh - pst->textlow; | |
18a94d75 | 2252 | section_offsets = objfile->section_offsets; |
c906108c | 2253 | |
dd707e8e | 2254 | dbxread_objfile = objfile; |
c906108c SS |
2255 | |
2256 | stringtab_global = DBX_STRINGTAB (objfile); | |
46212e0b | 2257 | set_last_source_file (NULL); |
c906108c SS |
2258 | |
2259 | abfd = objfile->obfd; | |
0963b4bd | 2260 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol. */ |
c906108c | 2261 | symbuf_end = symbuf_idx = 0; |
086df311 DJ |
2262 | symbuf_read = 0; |
2263 | symbuf_left = sym_offset + sym_size; | |
c906108c SS |
2264 | |
2265 | /* It is necessary to actually read one symbol *before* the start | |
2266 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
2267 | occurs before the N_SO symbol. | |
2268 | ||
2269 | Detecting this in read_dbx_symtab | |
2270 | would slow down initial readin, so we look for it here instead. */ | |
c5aa993b | 2271 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c | 2272 | { |
086df311 | 2273 | stabs_seek (sym_offset - symbol_size); |
c906108c SS |
2274 | fill_symbuf (abfd); |
2275 | bufp = &symbuf[symbuf_idx++]; | |
2276 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2277 | OBJSTAT (objfile, n_stabs++); | |
2278 | ||
83b94be5 | 2279 | namestring = set_namestring (objfile, &nlist); |
c906108c SS |
2280 | |
2281 | processing_gcc_compilation = 0; | |
2282 | if (nlist.n_type == N_TEXT) | |
2283 | { | |
2284 | const char *tempstring = namestring; | |
2285 | ||
91f54576 | 2286 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2287 | processing_gcc_compilation = 1; |
91f54576 | 2288 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2289 | processing_gcc_compilation = 2; |
2290 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) | |
2291 | ++tempstring; | |
61012eef | 2292 | if (startswith (tempstring, "__gnu_compiled")) |
c906108c SS |
2293 | processing_gcc_compilation = 2; |
2294 | } | |
c906108c SS |
2295 | } |
2296 | else | |
2297 | { | |
2298 | /* The N_SO starting this symtab is the first symbol, so we | |
c5aa993b JM |
2299 | better not check the symbol before it. I'm not this can |
2300 | happen, but it doesn't hurt to check for it. */ | |
086df311 | 2301 | stabs_seek (sym_offset); |
c906108c SS |
2302 | processing_gcc_compilation = 0; |
2303 | } | |
2304 | ||
2305 | if (symbuf_idx == symbuf_end) | |
2306 | fill_symbuf (abfd); | |
2307 | bufp = &symbuf[symbuf_idx]; | |
2308 | if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO) | |
8a3fe4f8 | 2309 | error (_("First symbol in segment of executable not a source symbol")); |
c906108c SS |
2310 | |
2311 | max_symnum = sym_size / symbol_size; | |
2312 | ||
2313 | for (symnum = 0; | |
2314 | symnum < max_symnum; | |
2315 | symnum++) | |
2316 | { | |
0963b4bd | 2317 | QUIT; /* Allow this to be interruptable. */ |
c906108c | 2318 | if (symbuf_idx == symbuf_end) |
c5aa993b | 2319 | fill_symbuf (abfd); |
c906108c SS |
2320 | bufp = &symbuf[symbuf_idx++]; |
2321 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2322 | OBJSTAT (objfile, n_stabs++); | |
2323 | ||
2324 | type = bfd_h_get_8 (abfd, bufp->e_type); | |
2325 | ||
83b94be5 | 2326 | namestring = set_namestring (objfile, &nlist); |
c906108c | 2327 | |
c5aa993b JM |
2328 | if (type & N_STAB) |
2329 | { | |
7b1f21e5 PP |
2330 | if (sizeof (nlist.n_value) > 4 |
2331 | /* We are a 64-bit debugger debugging a 32-bit program. */ | |
2332 | && (type == N_LSYM || type == N_PSYM)) | |
2333 | /* We have to be careful with the n_value in the case of N_LSYM | |
2334 | and N_PSYM entries, because they are signed offsets from frame | |
2335 | pointer, but we actually read them as unsigned 32-bit values. | |
2336 | This is not a problem for 32-bit debuggers, for which negative | |
2337 | values end up being interpreted correctly (as negative | |
2338 | offsets) due to integer overflow. | |
2339 | But we need to sign-extend the value for 64-bit debuggers, | |
2340 | or we'll end up interpreting negative values as very large | |
2341 | positive offsets. */ | |
2342 | nlist.n_value = (nlist.n_value ^ 0x80000000) - 0x80000000; | |
c906108c | 2343 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
5ffa0793 PA |
2344 | namestring, section_offsets, objfile, |
2345 | PST_LANGUAGE (pst)); | |
c5aa993b | 2346 | } |
c906108c | 2347 | /* We skip checking for a new .o or -l file; that should never |
0963b4bd | 2348 | happen in this routine. */ |
c906108c SS |
2349 | else if (type == N_TEXT) |
2350 | { | |
2351 | /* I don't think this code will ever be executed, because | |
2352 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
2353 | the N_SO symbol which starts this source file. | |
2354 | However, there is no reason not to accept | |
2355 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
2356 | ||
91f54576 | 2357 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2358 | processing_gcc_compilation = 1; |
91f54576 | 2359 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2360 | processing_gcc_compilation = 2; |
c906108c | 2361 | } |
c5aa993b | 2362 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
9a619af0 | 2363 | || type == (unsigned char) N_NBTEXT) |
c5aa993b | 2364 | { |
c906108c SS |
2365 | /* Global symbol: see if we came across a dbx defintion for |
2366 | a corresponding symbol. If so, store the value. Remove | |
2367 | syms from the chain when their values are stored, but | |
2368 | search the whole chain, as there may be several syms from | |
0963b4bd | 2369 | different files with the same name. */ |
c906108c SS |
2370 | /* This is probably not true. Since the files will be read |
2371 | in one at a time, each reference to a global symbol will | |
0963b4bd MS |
2372 | be satisfied in each file as it appears. So we skip this |
2373 | section. */ | |
c906108c | 2374 | ; |
c5aa993b | 2375 | } |
c906108c SS |
2376 | } |
2377 | ||
c906108c SS |
2378 | /* In a Solaris elf file, this variable, which comes from the |
2379 | value of the N_SO symbol, will still be 0. Luckily, text_offset, | |
0963b4bd | 2380 | which comes from pst->textlow is correct. */ |
2c99ee5c TT |
2381 | if (get_last_source_start_addr () == 0) |
2382 | set_last_source_start_addr (text_offset); | |
c906108c SS |
2383 | |
2384 | /* In reordered executables last_source_start_addr may not be the | |
2385 | lower bound for this symtab, instead use text_offset which comes | |
5afc051b | 2386 | from pst->textlow which is correct. */ |
2c99ee5c TT |
2387 | if (get_last_source_start_addr () > text_offset) |
2388 | set_last_source_start_addr (text_offset); | |
c906108c | 2389 | |
43f3e411 DE |
2390 | pst->compunit_symtab = end_symtab (text_offset + text_size, |
2391 | SECT_OFF_TEXT (objfile)); | |
c906108c | 2392 | |
c906108c | 2393 | end_stabs (); |
e9112110 | 2394 | |
dd707e8e | 2395 | dbxread_objfile = NULL; |
c906108c | 2396 | } |
c906108c | 2397 | \f |
c5aa993b | 2398 | |
195a3f6c TT |
2399 | /* Record the namespace that the function defined by SYMBOL was |
2400 | defined in, if necessary. BLOCK is the associated block; use | |
2401 | OBSTACK for allocation. */ | |
2402 | ||
2403 | static void | |
2404 | cp_set_block_scope (const struct symbol *symbol, | |
2405 | struct block *block, | |
2406 | struct obstack *obstack) | |
2407 | { | |
2408 | if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) | |
2409 | { | |
2410 | /* Try to figure out the appropriate namespace from the | |
2411 | demangled name. */ | |
2412 | ||
2413 | /* FIXME: carlton/2003-04-15: If the function in question is | |
2414 | a method of a class, the name will actually include the | |
2415 | name of the class as well. This should be harmless, but | |
2416 | is a little unfortunate. */ | |
2417 | ||
2418 | const char *name = SYMBOL_DEMANGLED_NAME (symbol); | |
2419 | unsigned int prefix_len = cp_entire_prefix_len (name); | |
2420 | ||
2421 | block_set_scope (block, | |
224c3ddb | 2422 | (const char *) obstack_copy0 (obstack, name, prefix_len), |
195a3f6c TT |
2423 | obstack); |
2424 | } | |
2425 | } | |
2426 | ||
c906108c SS |
2427 | /* This handles a single symbol from the symbol-file, building symbols |
2428 | into a GDB symtab. It takes these arguments and an implicit argument. | |
2429 | ||
2430 | TYPE is the type field of the ".stab" symbol entry. | |
2431 | DESC is the desc field of the ".stab" entry. | |
2432 | VALU is the value field of the ".stab" entry. | |
2433 | NAME is the symbol name, in our address space. | |
e31272c3 MK |
2434 | SECTION_OFFSETS is a set of amounts by which the sections of this |
2435 | object file were relocated when it was loaded into memory. Note | |
2436 | that these section_offsets are not the objfile->section_offsets but | |
2437 | the pst->section_offsets. All symbols that refer to memory | |
2438 | locations need to be offset by these amounts. | |
2439 | OBJFILE is the object file from which we are reading symbols. It | |
5ffa0793 PA |
2440 | is used in end_symtab. |
2441 | LANGUAGE is the language of the symtab. | |
2442 | */ | |
c906108c SS |
2443 | |
2444 | void | |
a121b7c1 | 2445 | process_one_symbol (int type, int desc, CORE_ADDR valu, const char *name, |
3189cb12 | 2446 | const struct section_offsets *section_offsets, |
5ffa0793 | 2447 | struct objfile *objfile, enum language language) |
c906108c | 2448 | { |
5e2b427d | 2449 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 2450 | struct context_stack *newobj; |
a60f3166 | 2451 | struct context_stack cstk; |
e31272c3 MK |
2452 | /* This remembers the address of the start of a function. It is |
2453 | used because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries | |
2454 | are relative to the current function's start address. On systems | |
2455 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, | |
2456 | and is used to relocate these symbol types rather than | |
2457 | SECTION_OFFSETS. */ | |
c906108c SS |
2458 | static CORE_ADDR function_start_offset; |
2459 | ||
e31272c3 MK |
2460 | /* This holds the address of the start of a function, without the |
2461 | system peculiarities of function_start_offset. */ | |
a1b9830c DJ |
2462 | static CORE_ADDR last_function_start; |
2463 | ||
54c7009d EZ |
2464 | /* If this is nonzero, we've seen an N_SLINE since the start of the |
2465 | current function. We use this to tell us to move the first sline | |
2466 | to the beginning of the function regardless of what its given | |
0963b4bd | 2467 | value is. */ |
a1b9830c DJ |
2468 | static int sline_found_in_function = 1; |
2469 | ||
e31272c3 MK |
2470 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this |
2471 | source file. Used to detect the SunPRO solaris compiler. */ | |
c906108c SS |
2472 | static int n_opt_found; |
2473 | ||
e31272c3 MK |
2474 | /* Something is wrong if we see real data before seeing a source |
2475 | file name. */ | |
c906108c | 2476 | |
46212e0b | 2477 | if (get_last_source_file () == NULL && type != (unsigned char) N_SO) |
c906108c SS |
2478 | { |
2479 | /* Ignore any symbols which appear before an N_SO symbol. | |
c5aa993b JM |
2480 | Currently no one puts symbols there, but we should deal |
2481 | gracefully with the case. A complain()t might be in order, | |
2482 | but this should not be an error (). */ | |
c906108c SS |
2483 | return; |
2484 | } | |
2485 | ||
2486 | switch (type) | |
2487 | { | |
2488 | case N_FUN: | |
2489 | case N_FNAME: | |
2490 | ||
2491 | if (*name == '\000') | |
2492 | { | |
e31272c3 MK |
2493 | /* This N_FUN marks the end of a function. This closes off |
2494 | the current block. */ | |
df8a16a1 | 2495 | struct block *block; |
0c5e171a | 2496 | |
edb0470b | 2497 | if (outermost_context_p ()) |
0c5e171a | 2498 | { |
23136709 | 2499 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2500 | break; |
2501 | } | |
2502 | ||
6b37567a JJ |
2503 | /* The following check is added before recording line 0 at |
2504 | end of function so as to handle hand-generated stabs | |
e31272c3 MK |
2505 | which may have an N_FUN stabs at the end of the function, |
2506 | but no N_SLINE stabs. */ | |
6b37567a | 2507 | if (sline_found_in_function) |
fbf65064 UW |
2508 | { |
2509 | CORE_ADDR addr = last_function_start + valu; | |
9a619af0 | 2510 | |
3c65e5b3 | 2511 | record_line (get_current_subfile (), 0, |
fbf65064 UW |
2512 | gdbarch_addr_bits_remove (gdbarch, addr)); |
2513 | } | |
6b37567a | 2514 | |
c906108c | 2515 | within_function = 0; |
a60f3166 | 2516 | cstk = pop_context (); |
c906108c SS |
2517 | |
2518 | /* Make a block for the local symbols within. */ | |
c233e9c6 | 2519 | block = finish_block (cstk.name, |
a60f3166 TT |
2520 | cstk.old_blocks, NULL, |
2521 | cstk.start_addr, cstk.start_addr + valu); | |
df8a16a1 DJ |
2522 | |
2523 | /* For C++, set the block's scope. */ | |
a60f3166 TT |
2524 | if (SYMBOL_LANGUAGE (cstk.name) == language_cplus) |
2525 | cp_set_block_scope (cstk.name, block, &objfile->objfile_obstack); | |
c906108c SS |
2526 | |
2527 | /* May be switching to an assembler file which may not be using | |
2528 | block relative stabs, so reset the offset. */ | |
1736a7bd | 2529 | function_start_offset = 0; |
c906108c SS |
2530 | |
2531 | break; | |
2532 | } | |
2533 | ||
a1b9830c DJ |
2534 | sline_found_in_function = 0; |
2535 | ||
e31272c3 | 2536 | /* Relocate for dynamic loading. */ |
b8fbeb18 | 2537 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
85ddcc70 | 2538 | valu = gdbarch_addr_bits_remove (gdbarch, valu); |
a1b9830c DJ |
2539 | last_function_start = valu; |
2540 | ||
c906108c SS |
2541 | goto define_a_symbol; |
2542 | ||
2543 | case N_LBRAC: | |
2544 | /* This "symbol" just indicates the start of an inner lexical | |
c5aa993b | 2545 | context within a function. */ |
c906108c SS |
2546 | |
2547 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2548 | if (n_opt_found && desc == 1) | |
2549 | break; | |
2550 | ||
1736a7bd | 2551 | valu += function_start_offset; |
c906108c | 2552 | |
ab8b8aca | 2553 | push_context (desc, valu); |
c906108c SS |
2554 | break; |
2555 | ||
2556 | case N_RBRAC: | |
2557 | /* This "symbol" just indicates the end of an inner lexical | |
c5aa993b | 2558 | context that was started with N_LBRAC. */ |
c906108c SS |
2559 | |
2560 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2561 | if (n_opt_found && desc == 1) | |
2562 | break; | |
2563 | ||
1736a7bd | 2564 | valu += function_start_offset; |
c906108c | 2565 | |
edb0470b | 2566 | if (outermost_context_p ()) |
0c5e171a | 2567 | { |
23136709 | 2568 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2569 | break; |
2570 | } | |
2571 | ||
a60f3166 TT |
2572 | cstk = pop_context (); |
2573 | if (desc != cstk.depth) | |
23136709 | 2574 | lbrac_mismatch_complaint (symnum); |
c906108c | 2575 | |
35156bae | 2576 | if (local_symbols != NULL) |
1f077a3e | 2577 | { |
35156bae DJ |
2578 | /* GCC development snapshots from March to December of |
2579 | 2000 would output N_LSYM entries after N_LBRAC | |
2580 | entries. As a consequence, these symbols are simply | |
2581 | discarded. Complain if this is the case. */ | |
b98664d3 | 2582 | complaint (_("misplaced N_LBRAC entry; discarding local " |
3e43a32a | 2583 | "symbols which have no enclosing block")); |
1f077a3e | 2584 | } |
a60f3166 | 2585 | local_symbols = cstk.locals; |
c906108c | 2586 | |
a60f3166 | 2587 | if (get_context_stack_depth () > 1) |
c906108c | 2588 | { |
e31272c3 MK |
2589 | /* This is not the outermost LBRAC...RBRAC pair in the |
2590 | function, its local symbols preceded it, and are the ones | |
2591 | just recovered from the context stack. Define the block | |
2592 | for them (but don't bother if the block contains no | |
2593 | symbols. Should we complain on blocks without symbols? | |
2594 | I can't think of any useful purpose for them). */ | |
c906108c SS |
2595 | if (local_symbols != NULL) |
2596 | { | |
e31272c3 MK |
2597 | /* Muzzle a compiler bug that makes end < start. |
2598 | ||
2599 | ??? Which compilers? Is this ever harmful?. */ | |
a60f3166 | 2600 | if (cstk.start_addr > valu) |
c906108c | 2601 | { |
b98664d3 | 2602 | complaint (_("block start larger than block end")); |
a60f3166 | 2603 | cstk.start_addr = valu; |
c906108c SS |
2604 | } |
2605 | /* Make a block for the local symbols within. */ | |
c233e9c6 | 2606 | finish_block (0, cstk.old_blocks, NULL, |
a60f3166 | 2607 | cstk.start_addr, valu); |
c906108c SS |
2608 | } |
2609 | } | |
2610 | else | |
2611 | { | |
2612 | /* This is the outermost LBRAC...RBRAC pair. There is no | |
2613 | need to do anything; leave the symbols that preceded it | |
2614 | to be attached to the function's own block. We need to | |
2615 | indicate that we just moved outside of the function. */ | |
2616 | within_function = 0; | |
2617 | } | |
2618 | ||
c906108c SS |
2619 | break; |
2620 | ||
2621 | case N_FN: | |
2622 | case N_FN_SEQ: | |
e31272c3 MK |
2623 | /* This kind of symbol indicates the start of an object file. |
2624 | Relocate for dynamic loading. */ | |
b8fbeb18 | 2625 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2626 | break; |
2627 | ||
2628 | case N_SO: | |
e31272c3 MK |
2629 | /* This type of symbol indicates the start of data for one |
2630 | source file. Finish the symbol table of the previous source | |
2631 | file (if any) and start accumulating a new symbol table. | |
2632 | Relocate for dynamic loading. */ | |
b8fbeb18 | 2633 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2634 | |
2635 | n_opt_found = 0; | |
2636 | ||
46212e0b | 2637 | if (get_last_source_file ()) |
c906108c SS |
2638 | { |
2639 | /* Check if previous symbol was also an N_SO (with some | |
e31272c3 MK |
2640 | sanity checks). If so, that one was actually the |
2641 | directory name, and the current one is the real file | |
0963b4bd | 2642 | name. Patch things up. */ |
c906108c SS |
2643 | if (previous_stab_code == (unsigned char) N_SO) |
2644 | { | |
3c65e5b3 | 2645 | patch_subfile_names (get_current_subfile (), name); |
0963b4bd | 2646 | break; /* Ignore repeated SOs. */ |
c906108c | 2647 | } |
4d663531 | 2648 | end_symtab (valu, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2649 | end_stabs (); |
2650 | } | |
2651 | ||
e31272c3 MK |
2652 | /* Null name means this just marks the end of text for this .o |
2653 | file. Don't start a new symtab in this case. */ | |
c906108c SS |
2654 | if (*name == '\000') |
2655 | break; | |
2656 | ||
1736a7bd | 2657 | function_start_offset = 0; |
c906108c SS |
2658 | |
2659 | start_stabs (); | |
5ffa0793 | 2660 | start_symtab (objfile, name, NULL, valu, language); |
c906108c SS |
2661 | record_debugformat ("stabs"); |
2662 | break; | |
2663 | ||
2664 | case N_SOL: | |
e31272c3 MK |
2665 | /* This type of symbol indicates the start of data for a |
2666 | sub-source-file, one whose contents were copied or included | |
2667 | in the compilation of the main source file (whose name was | |
2668 | given in the N_SO symbol). Relocate for dynamic loading. */ | |
b8fbeb18 | 2669 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
4d663531 | 2670 | start_subfile (name); |
c906108c SS |
2671 | break; |
2672 | ||
2673 | case N_BINCL: | |
2674 | push_subfile (); | |
2675 | add_new_header_file (name, valu); | |
4d663531 | 2676 | start_subfile (name); |
c906108c SS |
2677 | break; |
2678 | ||
2679 | case N_EINCL: | |
4d663531 | 2680 | start_subfile (pop_subfile ()); |
c906108c SS |
2681 | break; |
2682 | ||
2683 | case N_EXCL: | |
2684 | add_old_header_file (name, valu); | |
2685 | break; | |
2686 | ||
2687 | case N_SLINE: | |
e31272c3 MK |
2688 | /* This type of "symbol" really just records one line-number -- |
2689 | core-address correspondence. Enter it in the line list for | |
2690 | this symbol table. */ | |
c906108c | 2691 | |
e31272c3 MK |
2692 | /* Relocate for dynamic loading and for ELF acc |
2693 | function-relative symbols. */ | |
c906108c SS |
2694 | valu += function_start_offset; |
2695 | ||
ceddaf06 MK |
2696 | /* GCC 2.95.3 emits the first N_SLINE stab somwehere in the |
2697 | middle of the prologue instead of right at the start of the | |
2698 | function. To deal with this we record the address for the | |
2699 | first N_SLINE stab to be the start of the function instead of | |
2700 | the listed location. We really shouldn't to this. When | |
2701 | compiling with optimization, this first N_SLINE stab might be | |
2702 | optimized away. Other (non-GCC) compilers don't emit this | |
2703 | stab at all. There is no real harm in having an extra | |
2704 | numbered line, although it can be a bit annoying for the | |
2705 | user. However, it totally screws up our testsuite. | |
2706 | ||
2707 | So for now, keep adjusting the address of the first N_SLINE | |
2708 | stab, but only for code compiled with GCC. */ | |
2709 | ||
a1b9830c DJ |
2710 | if (within_function && sline_found_in_function == 0) |
2711 | { | |
fbf65064 UW |
2712 | CORE_ADDR addr = processing_gcc_compilation == 2 ? |
2713 | last_function_start : valu; | |
9a619af0 | 2714 | |
3c65e5b3 | 2715 | record_line (get_current_subfile (), desc, |
fbf65064 | 2716 | gdbarch_addr_bits_remove (gdbarch, addr)); |
a1b9830c DJ |
2717 | sline_found_in_function = 1; |
2718 | } | |
2719 | else | |
3c65e5b3 | 2720 | record_line (get_current_subfile (), desc, |
fbf65064 | 2721 | gdbarch_addr_bits_remove (gdbarch, valu)); |
c906108c SS |
2722 | break; |
2723 | ||
2724 | case N_BCOMM: | |
2725 | common_block_start (name, objfile); | |
2726 | break; | |
2727 | ||
2728 | case N_ECOMM: | |
2729 | common_block_end (objfile); | |
2730 | break; | |
2731 | ||
e31272c3 MK |
2732 | /* The following symbol types need to have the appropriate |
2733 | offset added to their value; then we process symbol | |
2734 | definitions in the name. */ | |
c906108c | 2735 | |
e31272c3 MK |
2736 | case N_STSYM: /* Static symbol in data segment. */ |
2737 | case N_LCSYM: /* Static symbol in BSS segment. */ | |
2738 | case N_ROSYM: /* Static symbol in read-only data segment. */ | |
c5aa993b | 2739 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
e31272c3 MK |
2740 | Solaris 2's stabs-in-elf makes *most* symbols relative but |
2741 | leaves a few absolute (at least for Solaris 2.1 and version | |
2742 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on | |
2743 | the fence. .stab "foo:S...",N_STSYM is absolute (ld | |
2744 | relocates it) .stab "foo:V...",N_STSYM is relative (section | |
2745 | base subtracted). This leaves us no choice but to search for | |
2746 | the 'S' or 'V'... (or pass the whole section_offsets stuff | |
2747 | down ONE MORE function call level, which we really don't want | |
2748 | to do). */ | |
c906108c | 2749 | { |
a121b7c1 | 2750 | const char *p; |
c906108c | 2751 | |
e31272c3 MK |
2752 | /* Normal object file and NLMs have non-zero text seg offsets, |
2753 | but don't need their static syms offset in this fashion. | |
2754 | XXX - This is really a crock that should be fixed in the | |
2755 | solib handling code so that I don't have to work around it | |
2756 | here. */ | |
c906108c SS |
2757 | |
2758 | if (!symfile_relocatable) | |
2759 | { | |
2760 | p = strchr (name, ':'); | |
2761 | if (p != 0 && p[1] == 'S') | |
2762 | { | |
18a94d75 DE |
2763 | /* The linker relocated it. We don't want to add a |
2764 | Sun-stabs Tfoo.foo-like offset, but we *do* | |
e31272c3 MK |
2765 | want to add whatever solib.c passed to |
2766 | symbol_file_add as addr (this is known to affect | |
18a94d75 DE |
2767 | SunOS 4, and I suspect ELF too). Since there is no |
2768 | Ttext.text symbol, we can get addr from the text offset. */ | |
b8fbeb18 | 2769 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2770 | goto define_a_symbol; |
2771 | } | |
2772 | } | |
e31272c3 MK |
2773 | /* Since it's not the kludge case, re-dispatch to the right |
2774 | handler. */ | |
c5aa993b JM |
2775 | switch (type) |
2776 | { | |
2777 | case N_STSYM: | |
2778 | goto case_N_STSYM; | |
2779 | case N_LCSYM: | |
2780 | goto case_N_LCSYM; | |
2781 | case N_ROSYM: | |
2782 | goto case_N_ROSYM; | |
2783 | default: | |
e31272c3 | 2784 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2785 | _("failed internal consistency check")); |
c5aa993b | 2786 | } |
c906108c SS |
2787 | } |
2788 | ||
e31272c3 MK |
2789 | case_N_STSYM: /* Static symbol in data segment. */ |
2790 | case N_DSLINE: /* Source line number, data segment. */ | |
b8fbeb18 | 2791 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
2792 | goto define_a_symbol; |
2793 | ||
e31272c3 MK |
2794 | case_N_LCSYM: /* Static symbol in BSS segment. */ |
2795 | case N_BSLINE: /* Source line number, BSS segment. */ | |
2796 | /* N_BROWS: overlaps with N_BSLINE. */ | |
b8fbeb18 | 2797 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
2798 | goto define_a_symbol; |
2799 | ||
e31272c3 | 2800 | case_N_ROSYM: /* Static symbol in read-only data segment. */ |
b8fbeb18 | 2801 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA (objfile)); |
c906108c SS |
2802 | goto define_a_symbol; |
2803 | ||
e31272c3 MK |
2804 | case N_ENTRY: /* Alternate entry point. */ |
2805 | /* Relocate for dynamic loading. */ | |
b8fbeb18 | 2806 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2807 | goto define_a_symbol; |
2808 | ||
e31272c3 MK |
2809 | /* The following symbol types we don't know how to process. |
2810 | Handle them in a "default" way, but complain to people who | |
2811 | care. */ | |
c906108c | 2812 | default: |
e31272c3 MK |
2813 | case N_CATCH: /* Exception handler catcher. */ |
2814 | case N_EHDECL: /* Exception handler name. */ | |
2815 | case N_PC: /* Global symbol in Pascal. */ | |
2816 | case N_M2C: /* Modula-2 compilation unit. */ | |
2817 | /* N_MOD2: overlaps with N_EHDECL. */ | |
2818 | case N_SCOPE: /* Modula-2 scope information. */ | |
2819 | case N_ECOML: /* End common (local name). */ | |
2820 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
c906108c SS |
2821 | case N_NBDATA: |
2822 | case N_NBBSS: | |
2823 | case N_NBSTS: | |
2824 | case N_NBLCS: | |
bb599908 | 2825 | unknown_symtype_complaint (hex_string (type)); |
c906108c SS |
2826 | /* FALLTHROUGH */ |
2827 | ||
c906108c | 2828 | define_a_symbol: |
86a73007 TT |
2829 | /* These symbol types don't need the address field relocated, |
2830 | since it is either unused, or is absolute. */ | |
e31272c3 MK |
2831 | case N_GSYM: /* Global variable. */ |
2832 | case N_NSYMS: /* Number of symbols (Ultrix). */ | |
2833 | case N_NOMAP: /* No map? (Ultrix). */ | |
2834 | case N_RSYM: /* Register variable. */ | |
2835 | case N_DEFD: /* Modula-2 GNU module dependency. */ | |
2836 | case N_SSYM: /* Struct or union element. */ | |
2837 | case N_LSYM: /* Local symbol in stack. */ | |
2838 | case N_PSYM: /* Parameter variable. */ | |
2839 | case N_LENG: /* Length of preceding symbol type. */ | |
c906108c SS |
2840 | if (name) |
2841 | { | |
2842 | int deftype; | |
a121b7c1 | 2843 | const char *colon_pos = strchr (name, ':'); |
9a619af0 | 2844 | |
c906108c SS |
2845 | if (colon_pos == NULL) |
2846 | deftype = '\0'; | |
2847 | else | |
2848 | deftype = colon_pos[1]; | |
2849 | ||
2850 | switch (deftype) | |
2851 | { | |
2852 | case 'f': | |
2853 | case 'F': | |
e31272c3 MK |
2854 | /* Deal with the SunPRO 3.0 compiler which omits the |
2855 | address from N_FUN symbols. */ | |
c906108c | 2856 | if (type == N_FUN |
e31272c3 | 2857 | && valu == ANOFFSET (section_offsets, |
203c3895 | 2858 | SECT_OFF_TEXT (objfile)) |
5e2b427d | 2859 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9a058a09 KB |
2860 | { |
2861 | CORE_ADDR minsym_valu = | |
46212e0b TT |
2862 | find_stab_function_addr (name, get_last_source_file (), |
2863 | objfile); | |
9a058a09 | 2864 | |
e31272c3 MK |
2865 | /* The function find_stab_function_addr will return |
2866 | 0 if the minimal symbol wasn't found. | |
2867 | (Unfortunately, this might also be a valid | |
2868 | address.) Anyway, if it *does* return 0, it is | |
2869 | likely that the value was set correctly to begin | |
2870 | with... */ | |
9a058a09 KB |
2871 | if (minsym_valu != 0) |
2872 | valu = minsym_valu; | |
2873 | } | |
c906108c | 2874 | |
1736a7bd PA |
2875 | /* These addresses are absolute. */ |
2876 | function_start_offset = valu; | |
c906108c SS |
2877 | |
2878 | within_function = 1; | |
c3f6f71d | 2879 | |
a60f3166 | 2880 | if (get_context_stack_depth () > 1) |
c3f6f71d | 2881 | { |
b98664d3 | 2882 | complaint (_("unmatched N_LBRAC before symtab pos %d"), |
063e58ba | 2883 | symnum); |
c3f6f71d JM |
2884 | break; |
2885 | } | |
2886 | ||
edb0470b | 2887 | if (!outermost_context_p ()) |
c906108c | 2888 | { |
df8a16a1 DJ |
2889 | struct block *block; |
2890 | ||
a60f3166 | 2891 | cstk = pop_context (); |
c906108c | 2892 | /* Make a block for the local symbols within. */ |
c233e9c6 | 2893 | block = finish_block (cstk.name, |
a60f3166 TT |
2894 | cstk.old_blocks, NULL, |
2895 | cstk.start_addr, valu); | |
df8a16a1 DJ |
2896 | |
2897 | /* For C++, set the block's scope. */ | |
a60f3166 TT |
2898 | if (SYMBOL_LANGUAGE (cstk.name) == language_cplus) |
2899 | cp_set_block_scope (cstk.name, block, | |
195a3f6c | 2900 | &objfile->objfile_obstack); |
c906108c | 2901 | } |
c906108c | 2902 | |
fe978cb0 PA |
2903 | newobj = push_context (0, valu); |
2904 | newobj->name = define_symbol (valu, name, desc, type, objfile); | |
c906108c SS |
2905 | break; |
2906 | ||
2907 | default: | |
2908 | define_symbol (valu, name, desc, type, objfile); | |
2909 | break; | |
2910 | } | |
2911 | } | |
2912 | break; | |
2913 | ||
c5aa993b JM |
2914 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
2915 | for a bunch of other flags, too. Someday we may parse their | |
2916 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
e31272c3 | 2917 | case N_OPT: /* Solaris 2: Compiler options. */ |
c906108c SS |
2918 | if (name) |
2919 | { | |
6314a349 | 2920 | if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2921 | { |
2922 | processing_gcc_compilation = 2; | |
c906108c SS |
2923 | } |
2924 | else | |
2925 | n_opt_found = 1; | |
2926 | } | |
2927 | break; | |
2928 | ||
51cc5b07 AC |
2929 | case N_MAIN: /* Name of main routine. */ |
2930 | /* FIXME: If one has a symbol file with N_MAIN and then replaces | |
2931 | it with a symbol file with "main" and without N_MAIN. I'm | |
2932 | not sure exactly what rule to follow but probably something | |
2933 | like: N_MAIN takes precedence over "main" no matter what | |
2934 | objfile it is in; If there is more than one N_MAIN, choose | |
2935 | the one in the symfile_objfile; If there is more than one | |
2936 | N_MAIN within a given objfile, complain() and choose | |
0963b4bd | 2937 | arbitrarily. (kingdon) */ |
51cc5b07 | 2938 | if (name != NULL) |
3d548a53 | 2939 | set_objfile_main_name (objfile, name, language_unknown); |
51cc5b07 AC |
2940 | break; |
2941 | ||
c5aa993b | 2942 | /* The following symbol types can be ignored. */ |
e31272c3 MK |
2943 | case N_OBJ: /* Solaris 2: Object file dir and name. */ |
2944 | case N_PATCH: /* Solaris 2: Patch Run Time Checker. */ | |
2945 | /* N_UNDF: Solaris 2: File separator mark. */ | |
2946 | /* N_UNDF: -- we will never encounter it, since we only process | |
2947 | one file's symbols at once. */ | |
2948 | case N_ENDM: /* Solaris 2: End of module. */ | |
c906108c SS |
2949 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
2950 | break; | |
2951 | } | |
2952 | ||
2953 | /* '#' is a GNU C extension to allow one symbol to refer to another | |
2954 | related symbol. | |
2955 | ||
2956 | Generally this is used so that an alias can refer to its main | |
c5aa993b | 2957 | symbol. */ |
13f6513c | 2958 | gdb_assert (name); |
c906108c SS |
2959 | if (name[0] == '#') |
2960 | { | |
e31272c3 MK |
2961 | /* Initialize symbol reference names and determine if this is a |
2962 | definition. If a symbol reference is being defined, go ahead | |
2963 | and add it. Otherwise, just return. */ | |
c906108c | 2964 | |
a121b7c1 | 2965 | const char *s = name; |
c906108c SS |
2966 | int refnum; |
2967 | ||
2968 | /* If this stab defines a new reference ID that is not on the | |
c5aa993b | 2969 | reference list, then put it on the reference list. |
c906108c | 2970 | |
c5aa993b JM |
2971 | We go ahead and advance NAME past the reference, even though |
2972 | it is not strictly necessary at this time. */ | |
c906108c SS |
2973 | refnum = symbol_reference_defined (&s); |
2974 | if (refnum >= 0) | |
2975 | if (!ref_search (refnum)) | |
2976 | ref_add (refnum, 0, name, valu); | |
2977 | name = s; | |
2978 | } | |
2979 | ||
c906108c SS |
2980 | previous_stab_code = type; |
2981 | } | |
2982 | \f | |
2983 | /* FIXME: The only difference between this and elfstab_build_psymtabs | |
2984 | is the call to install_minimal_symbols for elf, and the support for | |
2985 | split sections. If the differences are really that small, the code | |
2986 | should be shared. */ | |
2987 | ||
2988 | /* Scan and build partial symbols for an coff symbol file. | |
2989 | The coff file has already been processed to get its minimal symbols. | |
2990 | ||
2991 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2992 | rolled into one. | |
2993 | ||
2994 | OBJFILE is the object file we are reading symbols from. | |
2995 | ADDR is the address relative to which the symbols are (e.g. | |
2996 | the base address of the text segment). | |
c906108c SS |
2997 | TEXTADDR is the address of the text section. |
2998 | TEXTSIZE is the size of the text section. | |
2999 | STABSECTS is the list of .stab sections in OBJFILE. | |
3000 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
3001 | .stabstr section exists. | |
3002 | ||
3003 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 3004 | adjusted for coff details. */ |
c906108c SS |
3005 | |
3006 | void | |
c67a9c90 | 3007 | coffstab_build_psymtabs (struct objfile *objfile, |
fba45db2 KB |
3008 | CORE_ADDR textaddr, unsigned int textsize, |
3009 | struct stab_section_list *stabsects, | |
3010 | file_ptr stabstroffset, unsigned int stabstrsize) | |
c906108c SS |
3011 | { |
3012 | int val; | |
3013 | bfd *sym_bfd = objfile->obfd; | |
3014 | char *name = bfd_get_filename (sym_bfd); | |
c906108c SS |
3015 | unsigned int stabsize; |
3016 | ||
c906108c SS |
3017 | DBX_TEXT_ADDR (objfile) = textaddr; |
3018 | DBX_TEXT_SIZE (objfile) = textsize; | |
3019 | ||
3020 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3021 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; |
c906108c | 3022 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
c5aa993b | 3023 | |
c906108c | 3024 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3025 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3026 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3027 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3028 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3029 | |
3030 | /* Now read in the string table in one big gulp. */ | |
3031 | ||
3032 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3033 | if (val < 0) | |
3034 | perror_with_name (name); | |
3a42e9d0 | 3035 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3036 | if (val != stabstrsize) |
3037 | perror_with_name (name); | |
3038 | ||
3039 | stabsread_new_init (); | |
2c722d18 | 3040 | buildsym_init (); |
c906108c SS |
3041 | free_header_files (); |
3042 | init_header_files (); | |
3043 | ||
3044 | processing_acc_compilation = 1; | |
3045 | ||
3046 | /* In a coff file, we've already installed the minimal symbols that came | |
3047 | from the coff (non-stab) symbol table, so always act like an | |
0963b4bd | 3048 | incremental load here. */ |
c906108c SS |
3049 | if (stabsects->next == NULL) |
3050 | { | |
3051 | stabsize = bfd_section_size (sym_bfd, stabsects->section); | |
3052 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
3053 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3054 | } | |
3055 | else | |
3056 | { | |
3057 | struct stab_section_list *stabsect; | |
3058 | ||
3059 | DBX_SYMCOUNT (objfile) = 0; | |
3060 | for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next) | |
3061 | { | |
3062 | stabsize = bfd_section_size (sym_bfd, stabsect->section); | |
3063 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); | |
3064 | } | |
3065 | ||
3066 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3067 | ||
3068 | symbuf_sections = stabsects->next; | |
3069 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section); | |
3070 | symbuf_read = 0; | |
3071 | } | |
3072 | ||
96baa820 | 3073 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3074 | } |
3075 | \f | |
3076 | /* Scan and build partial symbols for an ELF symbol file. | |
fea25152 | 3077 | This ELF file has already been processed to get its minimal symbols. |
c906108c SS |
3078 | |
3079 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3080 | rolled into one. | |
3081 | ||
3082 | OBJFILE is the object file we are reading symbols from. | |
3083 | ADDR is the address relative to which the symbols are (e.g. | |
3084 | the base address of the text segment). | |
086df311 | 3085 | STABSECT is the BFD section information for the .stab section. |
c906108c SS |
3086 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
3087 | .stabstr section exists. | |
3088 | ||
3089 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 3090 | adjusted for elf details. */ |
c906108c SS |
3091 | |
3092 | void | |
c67a9c90 | 3093 | elfstab_build_psymtabs (struct objfile *objfile, asection *stabsect, |
fba45db2 | 3094 | file_ptr stabstroffset, unsigned int stabstrsize) |
c906108c SS |
3095 | { |
3096 | int val; | |
3097 | bfd *sym_bfd = objfile->obfd; | |
3098 | char *name = bfd_get_filename (sym_bfd); | |
c906108c | 3099 | |
7a292a7a SS |
3100 | /* Find the first and last text address. dbx_symfile_read seems to |
3101 | want this. */ | |
3102 | find_text_range (sym_bfd, objfile); | |
c906108c SS |
3103 | |
3104 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3105 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; |
086df311 DJ |
3106 | DBX_SYMCOUNT (objfile) |
3107 | = bfd_section_size (objfile->obfd, stabsect) / DBX_SYMBOL_SIZE (objfile); | |
c906108c | 3108 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
086df311 DJ |
3109 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; |
3110 | DBX_STAB_SECTION (objfile) = stabsect; | |
c5aa993b | 3111 | |
c906108c | 3112 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3113 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3114 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3115 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3116 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3117 | |
3118 | /* Now read in the string table in one big gulp. */ | |
3119 | ||
3120 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3121 | if (val < 0) | |
3122 | perror_with_name (name); | |
3a42e9d0 | 3123 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3124 | if (val != stabstrsize) |
3125 | perror_with_name (name); | |
3126 | ||
3127 | stabsread_new_init (); | |
2c722d18 | 3128 | buildsym_init (); |
c906108c SS |
3129 | free_header_files (); |
3130 | init_header_files (); | |
c906108c SS |
3131 | |
3132 | processing_acc_compilation = 1; | |
3133 | ||
086df311 DJ |
3134 | symbuf_read = 0; |
3135 | symbuf_left = bfd_section_size (objfile->obfd, stabsect); | |
bf259e25 TT |
3136 | |
3137 | scoped_restore restore_stabs_data = make_scoped_restore (&stabs_data); | |
3138 | gdb::unique_xmalloc_ptr<gdb_byte> data_holder; | |
3139 | ||
ac8035ab | 3140 | stabs_data = symfile_relocate_debug_section (objfile, stabsect, NULL); |
086df311 | 3141 | if (stabs_data) |
bf259e25 | 3142 | data_holder.reset (stabs_data); |
086df311 | 3143 | |
c906108c SS |
3144 | /* In an elf file, we've already installed the minimal symbols that came |
3145 | from the elf (non-stab) symbol table, so always act like an | |
7134143f DJ |
3146 | incremental load here. dbx_symfile_read should not generate any new |
3147 | minimal symbols, since we will have already read the ELF dynamic symbol | |
3148 | table and normal symbol entries won't be in the ".stab" section; but in | |
3149 | case it does, it will install them itself. */ | |
96baa820 | 3150 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3151 | } |
3152 | \f | |
3153 | /* Scan and build partial symbols for a file with special sections for stabs | |
3154 | and stabstrings. The file has already been processed to get its minimal | |
3155 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
3156 | ||
3157 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3158 | rolled into one. | |
3159 | ||
3160 | OBJFILE is the object file we are reading symbols from. | |
3161 | ADDR is the address relative to which the symbols are (e.g. the base address | |
c5aa993b | 3162 | of the text segment). |
c906108c SS |
3163 | STAB_NAME is the name of the section that contains the stabs. |
3164 | STABSTR_NAME is the name of the section that contains the stab strings. | |
3165 | ||
0963b4bd MS |
3166 | This routine is mostly copied from dbx_symfile_init and |
3167 | dbx_symfile_read. */ | |
c906108c SS |
3168 | |
3169 | void | |
c67a9c90 | 3170 | stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, |
fba45db2 | 3171 | char *stabstr_name, char *text_name) |
c906108c SS |
3172 | { |
3173 | int val; | |
3174 | bfd *sym_bfd = objfile->obfd; | |
3175 | char *name = bfd_get_filename (sym_bfd); | |
3176 | asection *stabsect; | |
3177 | asection *stabstrsect; | |
3178 | asection *text_sect; | |
d2f4b8fe | 3179 | struct dbx_symfile_info *dbx; |
c906108c SS |
3180 | |
3181 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
3182 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
3183 | ||
3184 | if (!stabsect) | |
3185 | return; | |
3186 | ||
3187 | if (!stabstrsect) | |
0963b4bd MS |
3188 | error (_("stabsect_build_psymtabs: Found stabs (%s), " |
3189 | "but not string section (%s)"), | |
c906108c SS |
3190 | stab_name, stabstr_name); |
3191 | ||
d2f4b8fe TT |
3192 | dbx = XCNEW (struct dbx_symfile_info); |
3193 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c SS |
3194 | |
3195 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); | |
3196 | if (!text_sect) | |
8a3fe4f8 | 3197 | error (_("Can't find %s section in symbol file"), text_name); |
c906108c SS |
3198 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
3199 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
3200 | ||
c5aa993b JM |
3201 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); |
3202 | DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect) | |
c906108c SS |
3203 | / DBX_SYMBOL_SIZE (objfile); |
3204 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect); | |
3e43a32a MS |
3205 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING |
3206 | INSIDE BFD DATA | |
3207 | STRUCTURES */ | |
c5aa993b | 3208 | |
c906108c | 3209 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) |
063e58ba MD |
3210 | error (_("ridiculous string table size: %d bytes"), |
3211 | DBX_STRINGTAB_SIZE (objfile)); | |
c906108c | 3212 | DBX_STRINGTAB (objfile) = (char *) |
3e43a32a MS |
3213 | obstack_alloc (&objfile->objfile_obstack, |
3214 | DBX_STRINGTAB_SIZE (objfile) + 1); | |
c906108c SS |
3215 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); |
3216 | ||
3217 | /* Now read in the string table in one big gulp. */ | |
3218 | ||
c5aa993b JM |
3219 | val = bfd_get_section_contents (sym_bfd, /* bfd */ |
3220 | stabstrsect, /* bfd section */ | |
063e58ba | 3221 | DBX_STRINGTAB (objfile), /* input buffer */ |
3e43a32a MS |
3222 | 0, /* offset into section */ |
3223 | DBX_STRINGTAB_SIZE (objfile)); /* amount to | |
3224 | read */ | |
c906108c SS |
3225 | |
3226 | if (!val) | |
3227 | perror_with_name (name); | |
3228 | ||
3229 | stabsread_new_init (); | |
2c722d18 | 3230 | buildsym_init (); |
c906108c SS |
3231 | free_header_files (); |
3232 | init_header_files (); | |
c906108c | 3233 | |
0963b4bd | 3234 | /* Now, do an incremental load. */ |
c906108c SS |
3235 | |
3236 | processing_acc_compilation = 1; | |
96baa820 | 3237 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3238 | } |
3239 | \f | |
00b5771c | 3240 | static const struct sym_fns aout_sym_fns = |
c906108c | 3241 | { |
0963b4bd MS |
3242 | dbx_new_init, /* init anything gbl to entire symtab */ |
3243 | dbx_symfile_init, /* read initial info, setup for sym_read() */ | |
3244 | dbx_symfile_read, /* read a symbol file into symtab */ | |
b11896a5 | 3245 | NULL, /* sym_read_psymbols */ |
0963b4bd MS |
3246 | dbx_symfile_finish, /* finished with file, cleanup */ |
3247 | default_symfile_offsets, /* parse user's offsets to internal form */ | |
3248 | default_symfile_segments, /* Get segment information from a file. */ | |
3249 | NULL, | |
3250 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3251 | NULL, /* sym_probe_fns */ |
00b5771c | 3252 | &psym_functions |
c906108c SS |
3253 | }; |
3254 | ||
3255 | void | |
fba45db2 | 3256 | _initialize_dbxread (void) |
c906108c | 3257 | { |
c256e171 | 3258 | add_symtab_fns (bfd_target_aout_flavour, &aout_sym_fns); |
d2f4b8fe TT |
3259 | |
3260 | dbx_objfile_data_key | |
3261 | = register_objfile_data_with_cleanup (NULL, dbx_free_symfile_info); | |
c906108c | 3262 | } |