Commit | Line | Data |
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c906108c | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
42a4f53d | 2 | Copyright (C) 1986-2019 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 | 47 | #include "objfiles.h" |
0baae8db | 48 | #include "buildsym-legacy.h" |
c906108c SS |
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 *, |
939652a5 | 301 | CORE_ADDR, int); |
d4f3574e | 302 | |
0963b4bd | 303 | /* Free up old header file tables. */ |
c906108c | 304 | |
d3d55eeb | 305 | void |
fba45db2 | 306 | free_header_files (void) |
c906108c SS |
307 | { |
308 | if (this_object_header_files) | |
309 | { | |
b8c9b27d | 310 | xfree (this_object_header_files); |
c906108c SS |
311 | this_object_header_files = NULL; |
312 | } | |
313 | n_allocated_this_object_header_files = 0; | |
314 | } | |
315 | ||
0963b4bd | 316 | /* Allocate new header file tables. */ |
c906108c | 317 | |
d3d55eeb | 318 | void |
fba45db2 | 319 | init_header_files (void) |
c906108c SS |
320 | { |
321 | n_allocated_this_object_header_files = 10; | |
8d749320 | 322 | this_object_header_files = XNEWVEC (int, 10); |
c906108c SS |
323 | } |
324 | ||
325 | /* Add header file number I for this object file | |
326 | at the next successive FILENUM. */ | |
327 | ||
328 | static void | |
fba45db2 | 329 | add_this_object_header_file (int i) |
c906108c SS |
330 | { |
331 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
332 | { | |
333 | n_allocated_this_object_header_files *= 2; | |
334 | this_object_header_files | |
335 | = (int *) xrealloc ((char *) this_object_header_files, | |
c5aa993b | 336 | n_allocated_this_object_header_files * sizeof (int)); |
c906108c SS |
337 | } |
338 | ||
339 | this_object_header_files[n_this_object_header_files++] = i; | |
340 | } | |
341 | ||
342 | /* Add to this file an "old" header file, one already seen in | |
343 | a previous object file. NAME is the header file's name. | |
344 | INSTANCE is its instance code, to select among multiple | |
345 | symbol tables for the same header file. */ | |
346 | ||
347 | static void | |
a121b7c1 | 348 | add_old_header_file (const char *name, int instance) |
c906108c | 349 | { |
dd707e8e | 350 | struct header_file *p = HEADER_FILES (dbxread_objfile); |
52f0bd74 | 351 | int i; |
c906108c | 352 | |
dd707e8e | 353 | for (i = 0; i < N_HEADER_FILES (dbxread_objfile); i++) |
0ba1096a | 354 | if (filename_cmp (p[i].name, name) == 0 && instance == p[i].instance) |
c906108c SS |
355 | { |
356 | add_this_object_header_file (i); | |
357 | return; | |
358 | } | |
23136709 | 359 | repeated_header_complaint (name, symnum); |
c906108c SS |
360 | } |
361 | ||
362 | /* Add to this file a "new" header file: definitions for its types follow. | |
363 | NAME is the header file's name. | |
364 | Most often this happens only once for each distinct header file, | |
365 | but not necessarily. If it happens more than once, INSTANCE has | |
366 | a different value each time, and references to the header file | |
367 | use INSTANCE values to select among them. | |
368 | ||
369 | dbx output contains "begin" and "end" markers for each new header file, | |
370 | but at this level we just need to know which files there have been; | |
371 | so we record the file when its "begin" is seen and ignore the "end". */ | |
372 | ||
373 | static void | |
a121b7c1 | 374 | add_new_header_file (const char *name, int instance) |
c906108c | 375 | { |
52f0bd74 AC |
376 | int i; |
377 | struct header_file *hfile; | |
c906108c SS |
378 | |
379 | /* Make sure there is room for one more header file. */ | |
380 | ||
dd707e8e | 381 | i = N_ALLOCATED_HEADER_FILES (dbxread_objfile); |
c906108c | 382 | |
dd707e8e | 383 | if (N_HEADER_FILES (dbxread_objfile) == i) |
c906108c SS |
384 | { |
385 | if (i == 0) | |
386 | { | |
dd707e8e TT |
387 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = 10; |
388 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
c906108c SS |
389 | xmalloc (10 * sizeof (struct header_file)); |
390 | } | |
391 | else | |
392 | { | |
393 | i *= 2; | |
dd707e8e TT |
394 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = i; |
395 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
396 | xrealloc ((char *) HEADER_FILES (dbxread_objfile), | |
c906108c SS |
397 | (i * sizeof (struct header_file))); |
398 | } | |
399 | } | |
400 | ||
401 | /* Create an entry for this header file. */ | |
402 | ||
dd707e8e TT |
403 | i = N_HEADER_FILES (dbxread_objfile)++; |
404 | hfile = HEADER_FILES (dbxread_objfile) + i; | |
1b36a34b | 405 | hfile->name = xstrdup (name); |
c906108c SS |
406 | hfile->instance = instance; |
407 | hfile->length = 10; | |
8d749320 | 408 | hfile->vector = XCNEWVEC (struct type *, 10); |
c906108c SS |
409 | |
410 | add_this_object_header_file (i); | |
411 | } | |
412 | ||
413 | #if 0 | |
414 | static struct type ** | |
fba45db2 | 415 | explicit_lookup_type (int real_filenum, int index) |
c906108c | 416 | { |
dd707e8e | 417 | struct header_file *f = &HEADER_FILES (dbxread_objfile)[real_filenum]; |
c906108c SS |
418 | |
419 | if (index >= f->length) | |
420 | { | |
421 | f->length *= 2; | |
422 | f->vector = (struct type **) | |
423 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
424 | memset (&f->vector[f->length / 2], | |
c5aa993b | 425 | '\0', f->length * sizeof (struct type *) / 2); |
c906108c SS |
426 | } |
427 | return &f->vector[index]; | |
428 | } | |
429 | #endif | |
430 | \f | |
431 | static void | |
8dddcb8f TT |
432 | record_minimal_symbol (minimal_symbol_reader &reader, |
433 | const char *name, CORE_ADDR address, int type, | |
fba45db2 | 434 | struct objfile *objfile) |
c906108c SS |
435 | { |
436 | enum minimal_symbol_type ms_type; | |
437 | int section; | |
c906108c SS |
438 | |
439 | switch (type) | |
440 | { | |
441 | case N_TEXT | N_EXT: | |
442 | ms_type = mst_text; | |
b8fbeb18 | 443 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
444 | break; |
445 | case N_DATA | N_EXT: | |
446 | ms_type = mst_data; | |
b8fbeb18 | 447 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
448 | break; |
449 | case N_BSS | N_EXT: | |
450 | ms_type = mst_bss; | |
b8fbeb18 | 451 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
452 | break; |
453 | case N_ABS | N_EXT: | |
454 | ms_type = mst_abs; | |
455 | section = -1; | |
c906108c SS |
456 | break; |
457 | #ifdef N_SETV | |
458 | case N_SETV | N_EXT: | |
459 | ms_type = mst_data; | |
b8fbeb18 | 460 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
461 | break; |
462 | case N_SETV: | |
463 | /* I don't think this type actually exists; since a N_SETV is the result | |
c5aa993b JM |
464 | of going over many .o files, it doesn't make sense to have one |
465 | file local. */ | |
c906108c | 466 | ms_type = mst_file_data; |
b8fbeb18 | 467 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
468 | break; |
469 | #endif | |
470 | case N_TEXT: | |
471 | case N_NBTEXT: | |
472 | case N_FN: | |
473 | case N_FN_SEQ: | |
474 | ms_type = mst_file_text; | |
b8fbeb18 | 475 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
476 | break; |
477 | case N_DATA: | |
478 | ms_type = mst_file_data; | |
479 | ||
480 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
c5aa993b JM |
481 | Record it as global even if it's local, not global, so |
482 | lookup_minimal_symbol can find it. We don't check symbol_leading_char | |
483 | because for SunOS4 it always is '_'. */ | |
91f54576 | 484 | if (name[8] == 'C' && strcmp ("__DYNAMIC", name) == 0) |
c906108c SS |
485 | ms_type = mst_data; |
486 | ||
487 | /* Same with virtual function tables, both global and static. */ | |
488 | { | |
bec71544 | 489 | const char *tempstring = name; |
9a619af0 | 490 | |
c906108c SS |
491 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) |
492 | ++tempstring; | |
015a42b4 | 493 | if (is_vtable_name (tempstring)) |
c906108c SS |
494 | ms_type = mst_data; |
495 | } | |
b8fbeb18 | 496 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
497 | break; |
498 | case N_BSS: | |
499 | ms_type = mst_file_bss; | |
b8fbeb18 | 500 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
501 | break; |
502 | default: | |
503 | ms_type = mst_unknown; | |
504 | section = -1; | |
c906108c | 505 | break; |
c5aa993b | 506 | } |
c906108c SS |
507 | |
508 | if ((ms_type == mst_file_text || ms_type == mst_text) | |
509 | && address < lowest_text_address) | |
510 | lowest_text_address = address; | |
511 | ||
8dddcb8f | 512 | reader.record_with_info (name, address, ms_type, section); |
c906108c SS |
513 | } |
514 | \f | |
515 | /* Scan and build partial symbols for a symbol file. | |
516 | We have been initialized by a call to dbx_symfile_init, which | |
517 | put all the relevant info into a "struct dbx_symfile_info", | |
f4352531 | 518 | hung off the objfile structure. */ |
c906108c SS |
519 | |
520 | static void | |
b15cc25c | 521 | dbx_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
522 | { |
523 | bfd *sym_bfd; | |
524 | int val; | |
c906108c | 525 | |
c906108c SS |
526 | sym_bfd = objfile->obfd; |
527 | ||
528 | /* .o and .nlm files are relocatables with text, data and bss segs based at | |
529 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for | |
530 | symbols with a value of 0. */ | |
531 | ||
532 | symfile_relocatable = bfd_get_file_flags (sym_bfd) & HAS_RELOC; | |
533 | ||
c906108c SS |
534 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); |
535 | if (val < 0) | |
4262abfb | 536 | perror_with_name (objfile_name (objfile)); |
c906108c | 537 | |
de1d8fb9 | 538 | /* Size the symbol table. */ |
6eee24ce | 539 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)); |
c906108c SS |
540 | |
541 | symbol_size = DBX_SYMBOL_SIZE (objfile); | |
542 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
543 | ||
33c7c59d | 544 | scoped_free_pendings free_pending; |
c906108c | 545 | |
d25e8719 | 546 | minimal_symbol_reader reader (objfile); |
c906108c | 547 | |
0963b4bd | 548 | /* Read stabs data from executable file and define symbols. */ |
c906108c | 549 | |
8dddcb8f | 550 | read_dbx_symtab (reader, objfile); |
c906108c | 551 | |
c906108c | 552 | /* Install any minimal symbols that have been collected as the current |
0963b4bd | 553 | minimal symbols for this objfile. */ |
c906108c | 554 | |
d25e8719 | 555 | reader.install (); |
c906108c SS |
556 | } |
557 | ||
558 | /* Initialize anything that needs initializing when a completely new | |
559 | symbol file is specified (not just adding some symbols from another | |
560 | file, e.g. a shared library). */ | |
561 | ||
562 | static void | |
fba45db2 | 563 | dbx_new_init (struct objfile *ignore) |
c906108c SS |
564 | { |
565 | stabsread_new_init (); | |
c906108c SS |
566 | init_header_files (); |
567 | } | |
568 | ||
569 | ||
570 | /* dbx_symfile_init () | |
571 | is the dbx-specific initialization routine for reading symbols. | |
572 | It is passed a struct objfile which contains, among other things, | |
573 | the BFD for the file whose symbols are being read, and a slot for a pointer | |
574 | to "private data" which we fill with goodies. | |
575 | ||
576 | We read the string table into malloc'd space and stash a pointer to it. | |
577 | ||
578 | Since BFD doesn't know how to read debug symbols in a format-independent | |
579 | way (and may never do so...), we have to do it ourselves. We will never | |
0963b4bd | 580 | be called unless this is an a.out (or very similar) file. |
c906108c SS |
581 | FIXME, there should be a cleaner peephole into the BFD environment here. */ |
582 | ||
c5aa993b | 583 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
c906108c SS |
584 | |
585 | static void | |
fba45db2 | 586 | dbx_symfile_init (struct objfile *objfile) |
c906108c SS |
587 | { |
588 | int val; | |
589 | bfd *sym_bfd = objfile->obfd; | |
590 | char *name = bfd_get_filename (sym_bfd); | |
591 | asection *text_sect; | |
592 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; | |
d2f4b8fe | 593 | struct dbx_symfile_info *dbx; |
c906108c | 594 | |
0963b4bd | 595 | /* Allocate struct to keep track of the symfile. */ |
d2f4b8fe TT |
596 | dbx = XCNEW (struct dbx_symfile_info); |
597 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c SS |
598 | |
599 | DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
600 | DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data"); | |
601 | DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss"); | |
602 | ||
0963b4bd | 603 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c SS |
604 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
605 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
606 | ||
0963b4bd | 607 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c | 608 | |
c906108c SS |
609 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
610 | if (!text_sect) | |
8a3fe4f8 | 611 | error (_("Can't find .text section in symbol file")); |
c906108c SS |
612 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
613 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
614 | ||
615 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); | |
616 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); | |
617 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; | |
618 | ||
8b92e4d5 EZ |
619 | /* Read the string table and stash it away in the objfile_obstack. |
620 | When we blow away the objfile the string table goes away as well. | |
c906108c SS |
621 | Note that gdb used to use the results of attempting to malloc the |
622 | string table, based on the size it read, as a form of sanity check | |
623 | for botched byte swapping, on the theory that a byte swapped string | |
624 | table size would be so totally bogus that the malloc would fail. Now | |
8b92e4d5 | 625 | that we put in on the objfile_obstack, we can't do this since gdb gets |
c906108c SS |
626 | a fatal error (out of virtual memory) if the size is bogus. We can |
627 | however at least check to see if the size is less than the size of | |
628 | the size field itself, or larger than the size of the entire file. | |
629 | Note that all valid string tables have a size greater than zero, since | |
0963b4bd | 630 | the bytes used to hold the size are included in the count. */ |
c906108c SS |
631 | |
632 | if (STRING_TABLE_OFFSET == 0) | |
633 | { | |
634 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET | |
c5aa993b | 635 | will never be zero, even when there is no string table. This |
0963b4bd | 636 | would appear to be a bug in bfd. */ |
c906108c SS |
637 | DBX_STRINGTAB_SIZE (objfile) = 0; |
638 | DBX_STRINGTAB (objfile) = NULL; | |
639 | } | |
640 | else | |
641 | { | |
642 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); | |
643 | if (val < 0) | |
644 | perror_with_name (name); | |
c5aa993b | 645 | |
4efb68b1 AC |
646 | memset (size_temp, 0, sizeof (size_temp)); |
647 | val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd); | |
c906108c SS |
648 | if (val < 0) |
649 | { | |
650 | perror_with_name (name); | |
651 | } | |
652 | else if (val == 0) | |
653 | { | |
654 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
655 | EOF if there is no string table, and attempting to read the size | |
0963b4bd | 656 | from EOF will read zero bytes. */ |
c906108c SS |
657 | DBX_STRINGTAB_SIZE (objfile) = 0; |
658 | DBX_STRINGTAB (objfile) = NULL; | |
659 | } | |
660 | else | |
661 | { | |
662 | /* Read some data that would appear to be the string table size. | |
663 | If there really is a string table, then it is probably the right | |
664 | size. Byteswap if necessary and validate the size. Note that | |
665 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
666 | random data that happened to be at STRING_TABLE_OFFSET, because | |
667 | bfd can't tell us there is no string table, the sanity checks may | |
0963b4bd | 668 | or may not catch this. */ |
c906108c | 669 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); |
c5aa993b | 670 | |
c906108c SS |
671 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) |
672 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
8a3fe4f8 | 673 | error (_("ridiculous string table size (%d bytes)."), |
c906108c | 674 | DBX_STRINGTAB_SIZE (objfile)); |
c5aa993b | 675 | |
c906108c | 676 | DBX_STRINGTAB (objfile) = |
8b92e4d5 | 677 | (char *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
678 | DBX_STRINGTAB_SIZE (objfile)); |
679 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); | |
c5aa993b | 680 | |
c906108c | 681 | /* Now read in the string table in one big gulp. */ |
c5aa993b | 682 | |
c906108c SS |
683 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
684 | if (val < 0) | |
685 | perror_with_name (name); | |
3a42e9d0 AM |
686 | val = bfd_bread (DBX_STRINGTAB (objfile), |
687 | DBX_STRINGTAB_SIZE (objfile), | |
688 | sym_bfd); | |
c906108c SS |
689 | if (val != DBX_STRINGTAB_SIZE (objfile)) |
690 | perror_with_name (name); | |
691 | } | |
692 | } | |
693 | } | |
694 | ||
695 | /* Perform any local cleanups required when we are done with a particular | |
696 | objfile. I.E, we are in the process of discarding all symbol information | |
697 | for an objfile, freeing up all memory held for it, and unlinking the | |
0963b4bd | 698 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
699 | |
700 | static void | |
fba45db2 | 701 | dbx_symfile_finish (struct objfile *objfile) |
c906108c | 702 | { |
d2f4b8fe TT |
703 | free_header_files (); |
704 | } | |
705 | ||
706 | static void | |
707 | dbx_free_symfile_info (struct objfile *objfile, void *arg) | |
708 | { | |
9a3c8263 | 709 | struct dbx_symfile_info *dbx = (struct dbx_symfile_info *) arg; |
d2f4b8fe TT |
710 | |
711 | if (dbx->header_files != NULL) | |
c906108c | 712 | { |
d2f4b8fe TT |
713 | int i = dbx->n_header_files; |
714 | struct header_file *hfiles = dbx->header_files; | |
c906108c | 715 | |
d2f4b8fe TT |
716 | while (--i >= 0) |
717 | { | |
718 | xfree (hfiles[i].name); | |
719 | xfree (hfiles[i].vector); | |
c906108c | 720 | } |
d2f4b8fe | 721 | xfree (hfiles); |
c906108c | 722 | } |
d2f4b8fe TT |
723 | |
724 | xfree (dbx); | |
c906108c | 725 | } |
d2f4b8fe | 726 | |
c906108c | 727 | \f |
c5aa993b | 728 | |
c906108c SS |
729 | /* Buffer for reading the symbol table entries. */ |
730 | static struct external_nlist symbuf[4096]; | |
731 | static int symbuf_idx; | |
732 | static int symbuf_end; | |
733 | ||
c906108c SS |
734 | /* Name of last function encountered. Used in Solaris to approximate |
735 | object file boundaries. */ | |
a121b7c1 | 736 | static const char *last_function_name; |
c906108c SS |
737 | |
738 | /* The address in memory of the string table of the object file we are | |
739 | reading (which might not be the "main" object file, but might be a | |
740 | shared library or some other dynamically loaded thing). This is | |
741 | set by read_dbx_symtab when building psymtabs, and by | |
742 | read_ofile_symtab when building symtabs, and is used only by | |
743 | next_symbol_text. FIXME: If that is true, we don't need it when | |
744 | building psymtabs, right? */ | |
745 | static char *stringtab_global; | |
746 | ||
747 | /* These variables are used to control fill_symbuf when the stabs | |
748 | symbols are not contiguous (as may be the case when a COFF file is | |
749 | linked using --split-by-reloc). */ | |
750 | static struct stab_section_list *symbuf_sections; | |
751 | static unsigned int symbuf_left; | |
752 | static unsigned int symbuf_read; | |
753 | ||
086df311 DJ |
754 | /* This variable stores a global stabs buffer, if we read stabs into |
755 | memory in one chunk in order to process relocations. */ | |
756 | static bfd_byte *stabs_data; | |
757 | ||
c906108c SS |
758 | /* Refill the symbol table input buffer |
759 | and set the variables that control fetching entries from it. | |
760 | Reports an error if no data available. | |
761 | This function can read past the end of the symbol table | |
762 | (into the string table) but this does no harm. */ | |
763 | ||
764 | static void | |
fba45db2 | 765 | fill_symbuf (bfd *sym_bfd) |
c906108c SS |
766 | { |
767 | unsigned int count; | |
768 | int nbytes; | |
769 | ||
086df311 DJ |
770 | if (stabs_data) |
771 | { | |
772 | nbytes = sizeof (symbuf); | |
773 | if (nbytes > symbuf_left) | |
774 | nbytes = symbuf_left; | |
775 | memcpy (symbuf, stabs_data + symbuf_read, nbytes); | |
776 | } | |
777 | else if (symbuf_sections == NULL) | |
778 | { | |
779 | count = sizeof (symbuf); | |
780 | nbytes = bfd_bread (symbuf, count, sym_bfd); | |
781 | } | |
c906108c SS |
782 | else |
783 | { | |
784 | if (symbuf_left <= 0) | |
785 | { | |
786 | file_ptr filepos = symbuf_sections->section->filepos; | |
9a619af0 | 787 | |
c906108c SS |
788 | if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0) |
789 | perror_with_name (bfd_get_filename (sym_bfd)); | |
790 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section); | |
791 | symbol_table_offset = filepos - symbuf_read; | |
792 | symbuf_sections = symbuf_sections->next; | |
793 | } | |
794 | ||
795 | count = symbuf_left; | |
796 | if (count > sizeof (symbuf)) | |
797 | count = sizeof (symbuf); | |
086df311 | 798 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
c906108c SS |
799 | } |
800 | ||
c906108c SS |
801 | if (nbytes < 0) |
802 | perror_with_name (bfd_get_filename (sym_bfd)); | |
803 | else if (nbytes == 0) | |
8a3fe4f8 | 804 | error (_("Premature end of file reading symbol table")); |
c906108c SS |
805 | symbuf_end = nbytes / symbol_size; |
806 | symbuf_idx = 0; | |
807 | symbuf_left -= nbytes; | |
808 | symbuf_read += nbytes; | |
809 | } | |
810 | ||
086df311 DJ |
811 | static void |
812 | stabs_seek (int sym_offset) | |
813 | { | |
814 | if (stabs_data) | |
815 | { | |
816 | symbuf_read += sym_offset; | |
817 | symbuf_left -= sym_offset; | |
818 | } | |
819 | else | |
820 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); | |
821 | } | |
822 | ||
c906108c SS |
823 | #define INTERNALIZE_SYMBOL(intern, extern, abfd) \ |
824 | { \ | |
c906108c | 825 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \ |
83b94be5 AM |
826 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \ |
827 | (intern).n_other = 0; \ | |
c906108c | 828 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \ |
40b3352b L |
829 | if (bfd_get_sign_extend_vma (abfd)) \ |
830 | (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \ | |
831 | else \ | |
832 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \ | |
c906108c SS |
833 | } |
834 | ||
835 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
836 | that hasn't been swapped. Swap the symbol at the same time | |
837 | that symbuf_idx is incremented. */ | |
838 | ||
839 | /* dbx allows the text of a symbol name to be continued into the | |
840 | next symbol name! When such a continuation is encountered | |
841 | (a \ at the end of the text of a name) | |
842 | call this function to get the continuation. */ | |
843 | ||
a121b7c1 | 844 | static const char * |
fba45db2 | 845 | dbx_next_symbol_text (struct objfile *objfile) |
c906108c SS |
846 | { |
847 | struct internal_nlist nlist; | |
848 | ||
849 | if (symbuf_idx == symbuf_end) | |
850 | fill_symbuf (symfile_bfd); | |
851 | ||
852 | symnum++; | |
c5aa993b | 853 | INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], symfile_bfd); |
c906108c SS |
854 | OBJSTAT (objfile, n_stabs++); |
855 | ||
856 | symbuf_idx++; | |
857 | ||
858 | return nlist.n_strx + stringtab_global + file_string_table_offset; | |
859 | } | |
860 | \f | |
c906108c SS |
861 | |
862 | /* Given a name, value pair, find the corresponding | |
863 | bincl in the list. Return the partial symtab associated | |
864 | with that header_file_location. */ | |
865 | ||
866 | static struct partial_symtab * | |
a121b7c1 | 867 | find_corresponding_bincl_psymtab (const char *name, int instance) |
c906108c | 868 | { |
52941706 | 869 | for (const header_file_location &bincl : *bincl_list) |
bf259e25 TT |
870 | if (bincl.instance == instance |
871 | && strcmp (name, bincl.name) == 0) | |
872 | return bincl.pst; | |
c906108c | 873 | |
23136709 | 874 | repeated_header_complaint (name, symnum); |
c906108c SS |
875 | return (struct partial_symtab *) 0; |
876 | } | |
877 | ||
6a34fd2f EZ |
878 | /* Set namestring based on nlist. If the string table index is invalid, |
879 | give a fake name, and print a single error message per symbol file read, | |
880 | rather than abort the symbol reading or flood the user with messages. */ | |
881 | ||
a121b7c1 | 882 | static const char * |
83b94be5 | 883 | set_namestring (struct objfile *objfile, const struct internal_nlist *nlist) |
6a34fd2f | 884 | { |
a121b7c1 | 885 | const char *namestring; |
6a34fd2f | 886 | |
5409dacf JK |
887 | if (nlist->n_strx + file_string_table_offset |
888 | >= DBX_STRINGTAB_SIZE (objfile) | |
889 | || nlist->n_strx + file_string_table_offset < nlist->n_strx) | |
6a34fd2f | 890 | { |
b98664d3 | 891 | complaint (_("bad string table offset in symbol %d"), |
23136709 | 892 | symnum); |
6a34fd2f EZ |
893 | namestring = "<bad string table offset>"; |
894 | } | |
895 | else | |
83b94be5 AM |
896 | namestring = (nlist->n_strx + file_string_table_offset |
897 | + DBX_STRINGTAB (objfile)); | |
6a34fd2f EZ |
898 | return namestring; |
899 | } | |
900 | ||
79748972 TT |
901 | static struct bound_minimal_symbol |
902 | find_stab_function (const char *namestring, const char *filename, | |
903 | struct objfile *objfile) | |
4867e41e | 904 | { |
3b7344d5 | 905 | struct bound_minimal_symbol msym; |
4867e41e DM |
906 | int n; |
907 | ||
a121b7c1 PA |
908 | const char *colon = strchr (namestring, ':'); |
909 | if (colon == NULL) | |
910 | n = 0; | |
911 | else | |
912 | n = colon - namestring; | |
913 | ||
914 | char *p = (char *) alloca (n + 2); | |
4867e41e DM |
915 | strncpy (p, namestring, n); |
916 | p[n] = 0; | |
917 | ||
918 | msym = lookup_minimal_symbol (p, filename, objfile); | |
3b7344d5 | 919 | if (msym.minsym == NULL) |
4867e41e DM |
920 | { |
921 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
922 | try again with an appended underscore if the minimal symbol | |
923 | was not found. */ | |
924 | p[n] = '_'; | |
925 | p[n + 1] = 0; | |
926 | msym = lookup_minimal_symbol (p, filename, objfile); | |
927 | } | |
928 | ||
3b7344d5 | 929 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 930 | { |
0963b4bd | 931 | /* Try again without the filename. */ |
4867e41e DM |
932 | p[n] = 0; |
933 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
934 | } | |
3b7344d5 | 935 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 936 | { |
0963b4bd | 937 | /* And try again for Sun Fortran, but without the filename. */ |
4867e41e DM |
938 | p[n] = '_'; |
939 | p[n + 1] = 0; | |
940 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
941 | } | |
942 | ||
79748972 | 943 | return msym; |
4867e41e | 944 | } |
4867e41e | 945 | |
23136709 KB |
946 | static void |
947 | function_outside_compilation_unit_complaint (const char *arg1) | |
948 | { | |
b98664d3 | 949 | complaint (_("function `%s' appears to be defined " |
3e43a32a | 950 | "outside of all compilation units"), |
23136709 KB |
951 | arg1); |
952 | } | |
953 | ||
d4f3574e | 954 | /* Setup partial_symtab's describing each source file for which |
0963b4bd | 955 | debugging information is available. */ |
c906108c SS |
956 | |
957 | static void | |
8dddcb8f | 958 | read_dbx_symtab (minimal_symbol_reader &reader, struct objfile *objfile) |
c906108c | 959 | { |
5e2b427d | 960 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0963b4bd | 961 | struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch. */ |
c906108c | 962 | struct internal_nlist nlist; |
d4f3574e SS |
963 | CORE_ADDR text_addr; |
964 | int text_size; | |
a121b7c1 | 965 | const char *sym_name; |
71c25dea | 966 | int sym_len; |
c906108c | 967 | |
a121b7c1 | 968 | const char *namestring; |
c906108c SS |
969 | int nsl; |
970 | int past_first_source_file = 0; | |
c906108c | 971 | CORE_ADDR last_function_start = 0; |
c906108c SS |
972 | bfd *abfd; |
973 | int textlow_not_set; | |
7c8a5605 | 974 | int data_sect_index; |
c906108c | 975 | |
0963b4bd | 976 | /* Current partial symtab. */ |
c906108c SS |
977 | struct partial_symtab *pst; |
978 | ||
0963b4bd | 979 | /* List of current psymtab's include files. */ |
0d5cff50 | 980 | const char **psymtab_include_list; |
c906108c SS |
981 | int includes_allocated; |
982 | int includes_used; | |
983 | ||
0963b4bd | 984 | /* Index within current psymtab dependency list. */ |
c906108c SS |
985 | struct partial_symtab **dependency_list; |
986 | int dependencies_used, dependencies_allocated; | |
987 | ||
d4f3574e SS |
988 | text_addr = DBX_TEXT_ADDR (objfile); |
989 | text_size = DBX_TEXT_SIZE (objfile); | |
990 | ||
c906108c SS |
991 | /* FIXME. We probably want to change stringtab_global rather than add this |
992 | while processing every symbol entry. FIXME. */ | |
993 | file_string_table_offset = 0; | |
994 | next_file_string_table_offset = 0; | |
995 | ||
996 | stringtab_global = DBX_STRINGTAB (objfile); | |
c5aa993b | 997 | |
c906108c SS |
998 | pst = (struct partial_symtab *) 0; |
999 | ||
1000 | includes_allocated = 30; | |
1001 | includes_used = 0; | |
0d5cff50 DE |
1002 | psymtab_include_list = (const char **) alloca (includes_allocated * |
1003 | sizeof (const char *)); | |
c906108c SS |
1004 | |
1005 | dependencies_allocated = 30; | |
1006 | dependencies_used = 0; | |
1007 | dependency_list = | |
1008 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1009 | sizeof (struct partial_symtab *)); | |
1010 | ||
1011 | /* Init bincl list */ | |
bf259e25 TT |
1012 | std::vector<struct header_file_location> bincl_storage; |
1013 | scoped_restore restore_bincl_global | |
1014 | = make_scoped_restore (&bincl_list, &bincl_storage); | |
c906108c | 1015 | |
46212e0b | 1016 | set_last_source_file (NULL); |
c906108c | 1017 | |
96baa820 | 1018 | lowest_text_address = (CORE_ADDR) -1; |
c906108c | 1019 | |
0963b4bd | 1020 | symfile_bfd = objfile->obfd; /* For next_text_symbol. */ |
c906108c SS |
1021 | abfd = objfile->obfd; |
1022 | symbuf_end = symbuf_idx = 0; | |
1023 | next_symbol_text_func = dbx_next_symbol_text; | |
1024 | textlow_not_set = 1; | |
1025 | has_line_numbers = 0; | |
1026 | ||
4f49b26b JB |
1027 | /* FIXME: jimb/2003-09-12: We don't apply the right section's offset |
1028 | to global and static variables. The stab for a global or static | |
1029 | variable doesn't give us any indication of which section it's in, | |
1030 | so we can't tell immediately which offset in | |
1031 | objfile->section_offsets we should apply to the variable's | |
1032 | address. | |
1033 | ||
1034 | We could certainly find out which section contains the variable | |
1035 | by looking up the variable's unrelocated address with | |
1036 | find_pc_section, but that would be expensive; this is the | |
1037 | function that constructs the partial symbol tables by examining | |
1038 | every symbol in the entire executable, and it's | |
1039 | performance-critical. So that expense would not be welcome. I'm | |
1040 | not sure what to do about this at the moment. | |
1041 | ||
1042 | What we have done for years is to simply assume that the .data | |
1043 | section's offset is appropriate for all global and static | |
1044 | variables. Recently, this was expanded to fall back to the .bss | |
1045 | section's offset if there is no .data section, and then to the | |
1046 | .rodata section's offset. */ | |
7c8a5605 JB |
1047 | data_sect_index = objfile->sect_index_data; |
1048 | if (data_sect_index == -1) | |
1049 | data_sect_index = SECT_OFF_BSS (objfile); | |
2a13f9bc JB |
1050 | if (data_sect_index == -1) |
1051 | data_sect_index = SECT_OFF_RODATA (objfile); | |
d646061f JB |
1052 | |
1053 | /* If data_sect_index is still -1, that's okay. It's perfectly fine | |
1054 | for the file to have no .data, no .bss, and no .text at all, if | |
1055 | it also has no global or static variables. If it does, we will | |
1056 | get an internal error from an ANOFFSET macro below when we try to | |
1057 | use data_sect_index. */ | |
7c8a5605 | 1058 | |
c906108c SS |
1059 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
1060 | { | |
0963b4bd MS |
1061 | /* Get the symbol for this run and pull out some info. */ |
1062 | QUIT; /* Allow this to be interruptable. */ | |
c906108c SS |
1063 | if (symbuf_idx == symbuf_end) |
1064 | fill_symbuf (abfd); | |
1065 | bufp = &symbuf[symbuf_idx++]; | |
1066 | ||
1067 | /* | |
1068 | * Special case to speed up readin. | |
1069 | */ | |
1070 | if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE) | |
1071 | { | |
1072 | has_line_numbers = 1; | |
1073 | continue; | |
1074 | } | |
1075 | ||
1076 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
1077 | OBJSTAT (objfile, n_stabs++); | |
1078 | ||
1079 | /* Ok. There is a lot of code duplicated in the rest of this | |
1080 | switch statement (for efficiency reasons). Since I don't | |
1081 | like duplicating code, I will do my penance here, and | |
1082 | describe the code which is duplicated: | |
1083 | ||
c5aa993b JM |
1084 | *) The assignment to namestring. |
1085 | *) The call to strchr. | |
b021a221 | 1086 | *) The addition of a partial symbol the two partial |
c5aa993b | 1087 | symbol lists. This last is a large section of code, so |
0963b4bd | 1088 | I've imbedded it in the following macro. */ |
c5aa993b | 1089 | |
6a34fd2f EZ |
1090 | switch (nlist.n_type) |
1091 | { | |
6a34fd2f EZ |
1092 | /* |
1093 | * Standard, external, non-debugger, symbols | |
1094 | */ | |
1095 | ||
9ce5d3bb DE |
1096 | case N_TEXT | N_EXT: |
1097 | case N_NBTEXT | N_EXT: | |
6a34fd2f EZ |
1098 | goto record_it; |
1099 | ||
9ce5d3bb DE |
1100 | case N_DATA | N_EXT: |
1101 | case N_NBDATA | N_EXT: | |
6a34fd2f EZ |
1102 | goto record_it; |
1103 | ||
9ce5d3bb DE |
1104 | case N_BSS: |
1105 | case N_BSS | N_EXT: | |
1106 | case N_NBBSS | N_EXT: | |
1107 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
6a34fd2f EZ |
1108 | goto record_it; |
1109 | ||
9ce5d3bb | 1110 | case N_ABS | N_EXT: |
6a34fd2f | 1111 | record_it: |
83b94be5 | 1112 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1113 | |
8dddcb8f | 1114 | record_minimal_symbol (reader, namestring, nlist.n_value, |
6a34fd2f EZ |
1115 | nlist.n_type, objfile); /* Always */ |
1116 | continue; | |
1117 | ||
0963b4bd | 1118 | /* Standard, local, non-debugger, symbols. */ |
6a34fd2f | 1119 | |
9ce5d3bb | 1120 | case N_NBTEXT: |
6a34fd2f EZ |
1121 | |
1122 | /* We need to be able to deal with both N_FN or N_TEXT, | |
1123 | because we have no way of knowing whether the sys-supplied ld | |
1124 | or GNU ld was used to make the executable. Sequents throw | |
1125 | in another wrinkle -- they renumbered N_FN. */ | |
1126 | ||
9ce5d3bb DE |
1127 | case N_FN: |
1128 | case N_FN_SEQ: | |
1129 | case N_TEXT: | |
83b94be5 | 1130 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1131 | |
1132 | if ((namestring[0] == '-' && namestring[1] == 'l') | |
1133 | || (namestring[(nsl = strlen (namestring)) - 1] == 'o' | |
1134 | && namestring[nsl - 2] == '.')) | |
9ce5d3bb DE |
1135 | { |
1136 | if (past_first_source_file && pst | |
1137 | /* The gould NP1 uses low values for .o and -l symbols | |
1138 | which are not the address. */ | |
79748972 | 1139 | && nlist.n_value >= pst->raw_text_low ()) |
9ce5d3bb | 1140 | { |
8763cede DE |
1141 | dbx_end_psymtab (objfile, pst, psymtab_include_list, |
1142 | includes_used, symnum * symbol_size, | |
79748972 TT |
1143 | nlist.n_value > pst->raw_text_high () |
1144 | ? nlist.n_value : pst->raw_text_high (), | |
8763cede DE |
1145 | dependency_list, dependencies_used, |
1146 | textlow_not_set); | |
9ce5d3bb DE |
1147 | pst = (struct partial_symtab *) 0; |
1148 | includes_used = 0; | |
1149 | dependencies_used = 0; | |
578933ab | 1150 | has_line_numbers = 0; |
9ce5d3bb DE |
1151 | } |
1152 | else | |
1153 | past_first_source_file = 1; | |
9ce5d3bb | 1154 | } |
6a34fd2f | 1155 | else |
9ce5d3bb | 1156 | goto record_it; |
6a34fd2f EZ |
1157 | continue; |
1158 | ||
9ce5d3bb | 1159 | case N_DATA: |
6a34fd2f EZ |
1160 | goto record_it; |
1161 | ||
9ce5d3bb | 1162 | case N_UNDF | N_EXT: |
d4862372 JB |
1163 | /* The case (nlist.n_value != 0) is a "Fortran COMMON" symbol. |
1164 | We used to rely on the target to tell us whether it knows | |
1165 | where the symbol has been relocated to, but none of the | |
1166 | target implementations actually provided that operation. | |
1167 | So we just ignore the symbol, the same way we would do if | |
1168 | we had a target-side symbol lookup which returned no match. | |
1169 | ||
1170 | All other symbols (with nlist.n_value == 0), are really | |
1171 | undefined, and so we ignore them too. */ | |
1172 | continue; | |
6a34fd2f | 1173 | |
9ce5d3bb | 1174 | case N_UNDF: |
6a34fd2f | 1175 | if (processing_acc_compilation && nlist.n_strx == 1) |
9ce5d3bb DE |
1176 | { |
1177 | /* Deal with relative offsets in the string table | |
1178 | used in ELF+STAB under Solaris. If we want to use the | |
1179 | n_strx field, which contains the name of the file, | |
1180 | we must adjust file_string_table_offset *before* calling | |
1181 | set_namestring(). */ | |
1182 | past_first_source_file = 1; | |
1183 | file_string_table_offset = next_file_string_table_offset; | |
1184 | next_file_string_table_offset = | |
1185 | file_string_table_offset + nlist.n_value; | |
1186 | if (next_file_string_table_offset < file_string_table_offset) | |
1187 | error (_("string table offset backs up at %d"), symnum); | |
1188 | /* FIXME -- replace error() with complaint. */ | |
1189 | continue; | |
1190 | } | |
6a34fd2f EZ |
1191 | continue; |
1192 | ||
1193 | /* Lots of symbol types we can just ignore. */ | |
1194 | ||
9ce5d3bb DE |
1195 | case N_ABS: |
1196 | case N_NBDATA: | |
1197 | case N_NBBSS: | |
6a34fd2f EZ |
1198 | continue; |
1199 | ||
0963b4bd | 1200 | /* Keep going . . . */ |
6a34fd2f EZ |
1201 | |
1202 | /* | |
1203 | * Special symbol types for GNU | |
1204 | */ | |
9ce5d3bb DE |
1205 | case N_INDR: |
1206 | case N_INDR | N_EXT: | |
1207 | case N_SETA: | |
1208 | case N_SETA | N_EXT: | |
1209 | case N_SETT: | |
1210 | case N_SETT | N_EXT: | |
1211 | case N_SETD: | |
1212 | case N_SETD | N_EXT: | |
1213 | case N_SETB: | |
1214 | case N_SETB | N_EXT: | |
1215 | case N_SETV: | |
6a34fd2f EZ |
1216 | continue; |
1217 | ||
1218 | /* | |
1219 | * Debugger symbols | |
1220 | */ | |
1221 | ||
9ce5d3bb | 1222 | case N_SO: |
6a34fd2f EZ |
1223 | { |
1224 | CORE_ADDR valu; | |
1225 | static int prev_so_symnum = -10; | |
1226 | static int first_so_symnum; | |
0ba1096a | 1227 | const char *p; |
a121b7c1 | 1228 | static const char *dirname_nso; |
6a34fd2f EZ |
1229 | int prev_textlow_not_set; |
1230 | ||
79748972 | 1231 | valu = nlist.n_value; |
6a34fd2f EZ |
1232 | |
1233 | prev_textlow_not_set = textlow_not_set; | |
1234 | ||
6a34fd2f | 1235 | /* A zero value is probably an indication for the SunPRO 3.0 |
8763cede | 1236 | compiler. dbx_end_psymtab explicitly tests for zero, so |
6a34fd2f EZ |
1237 | don't relocate it. */ |
1238 | ||
203c3895 | 1239 | if (nlist.n_value == 0 |
5e2b427d | 1240 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
6a34fd2f EZ |
1241 | { |
1242 | textlow_not_set = 1; | |
1243 | valu = 0; | |
1244 | } | |
1245 | else | |
1246 | textlow_not_set = 0; | |
203c3895 | 1247 | |
6a34fd2f EZ |
1248 | past_first_source_file = 1; |
1249 | ||
1250 | if (prev_so_symnum != symnum - 1) | |
0963b4bd | 1251 | { /* Here if prev stab wasn't N_SO. */ |
6a34fd2f EZ |
1252 | first_so_symnum = symnum; |
1253 | ||
1254 | if (pst) | |
1255 | { | |
8763cede DE |
1256 | dbx_end_psymtab (objfile, pst, psymtab_include_list, |
1257 | includes_used, symnum * symbol_size, | |
79748972 TT |
1258 | (valu > pst->raw_text_high () |
1259 | ? valu : pst->raw_text_high ()), | |
8763cede DE |
1260 | dependency_list, dependencies_used, |
1261 | prev_textlow_not_set); | |
6a34fd2f EZ |
1262 | pst = (struct partial_symtab *) 0; |
1263 | includes_used = 0; | |
1264 | dependencies_used = 0; | |
578933ab | 1265 | has_line_numbers = 0; |
6a34fd2f EZ |
1266 | } |
1267 | } | |
1268 | ||
1269 | prev_so_symnum = symnum; | |
1270 | ||
0963b4bd | 1271 | /* End the current partial symtab and start a new one. */ |
6a34fd2f | 1272 | |
83b94be5 | 1273 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1274 | |
0963b4bd | 1275 | /* Null name means end of .o file. Don't start a new one. */ |
6a34fd2f EZ |
1276 | if (*namestring == '\000') |
1277 | continue; | |
1278 | ||
1279 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
1280 | The first one is a directory name; the second the file name. | |
1281 | If pst exists, is empty, and has a filename ending in '/', | |
0963b4bd | 1282 | we assume the previous N_SO was a directory name. */ |
6a34fd2f | 1283 | |
0ba1096a KT |
1284 | p = lbasename (namestring); |
1285 | if (p != namestring && *p == '\000') | |
57c22c6c BR |
1286 | { |
1287 | /* Save the directory name SOs locally, then save it into | |
0963b4bd | 1288 | the psymtab when it's created below. */ |
57c22c6c BR |
1289 | dirname_nso = namestring; |
1290 | continue; | |
1291 | } | |
6a34fd2f EZ |
1292 | |
1293 | /* Some other compilers (C++ ones in particular) emit useless | |
131fe1bb DE |
1294 | SOs for non-existant .c files. We ignore all subsequent SOs |
1295 | that immediately follow the first. */ | |
6a34fd2f EZ |
1296 | |
1297 | if (!pst) | |
57c22c6c | 1298 | { |
9ce5d3bb DE |
1299 | pst = start_psymtab (objfile, |
1300 | namestring, valu, | |
939652a5 | 1301 | first_so_symnum * symbol_size); |
57c22c6c BR |
1302 | pst->dirname = dirname_nso; |
1303 | dirname_nso = NULL; | |
1304 | } | |
6a34fd2f EZ |
1305 | continue; |
1306 | } | |
1307 | ||
9ce5d3bb | 1308 | case N_BINCL: |
6a34fd2f EZ |
1309 | { |
1310 | enum language tmp_language; | |
9a619af0 | 1311 | |
6a34fd2f EZ |
1312 | /* Add this bincl to the bincl_list for future EXCLs. No |
1313 | need to save the string; it'll be around until | |
0963b4bd | 1314 | read_dbx_symtab function returns. */ |
6a34fd2f | 1315 | |
83b94be5 | 1316 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1317 | tmp_language = deduce_language_from_filename (namestring); |
1318 | ||
1319 | /* Only change the psymtab's language if we've learned | |
1320 | something useful (eg. tmp_language is not language_unknown). | |
1321 | In addition, to match what start_subfile does, never change | |
1322 | from C++ to C. */ | |
1323 | if (tmp_language != language_unknown | |
1324 | && (tmp_language != language_c | |
1325 | || psymtab_language != language_cplus)) | |
d7f98cce | 1326 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1327 | |
1328 | if (pst == NULL) | |
9ce5d3bb DE |
1329 | { |
1330 | /* FIXME: we should not get here without a PST to work on. | |
1331 | Attempt to recover. */ | |
b98664d3 | 1332 | complaint (_("N_BINCL %s not in entries for " |
3e43a32a | 1333 | "any file, at symtab pos %d"), |
9ce5d3bb DE |
1334 | namestring, symnum); |
1335 | continue; | |
1336 | } | |
bf259e25 | 1337 | bincl_list->emplace_back (namestring, nlist.n_value, pst); |
6a34fd2f | 1338 | |
0963b4bd | 1339 | /* Mark down an include file in the current psymtab. */ |
6a34fd2f EZ |
1340 | |
1341 | goto record_include_file; | |
1342 | } | |
1343 | ||
9ce5d3bb | 1344 | case N_SOL: |
6a34fd2f EZ |
1345 | { |
1346 | enum language tmp_language; | |
6a34fd2f | 1347 | |
0963b4bd | 1348 | /* Mark down an include file in the current psymtab. */ |
83b94be5 | 1349 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1350 | tmp_language = deduce_language_from_filename (namestring); |
1351 | ||
1352 | /* Only change the psymtab's language if we've learned | |
1353 | something useful (eg. tmp_language is not language_unknown). | |
1354 | In addition, to match what start_subfile does, never change | |
1355 | from C++ to C. */ | |
1356 | if (tmp_language != language_unknown | |
1357 | && (tmp_language != language_c | |
1358 | || psymtab_language != language_cplus)) | |
d7f98cce | 1359 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1360 | |
1361 | /* In C++, one may expect the same filename to come round many | |
1362 | times, when code is coming alternately from the main file | |
0963b4bd | 1363 | and from inline functions in other files. So I check to see |
6a34fd2f EZ |
1364 | if this is a file we've seen before -- either the main |
1365 | source file, or a previously included file. | |
1366 | ||
1367 | This seems to be a lot of time to be spending on N_SOL, but | |
1368 | things like "break c-exp.y:435" need to work (I | |
1369 | suppose the psymtab_include_list could be hashed or put | |
1370 | in a binary tree, if profiling shows this is a major hog). */ | |
0ba1096a | 1371 | if (pst && filename_cmp (namestring, pst->filename) == 0) |
9ce5d3bb | 1372 | continue; |
6a34fd2f | 1373 | { |
aa1ee363 | 1374 | int i; |
9a619af0 | 1375 | |
6a34fd2f | 1376 | for (i = 0; i < includes_used; i++) |
0ba1096a | 1377 | if (filename_cmp (namestring, psymtab_include_list[i]) == 0) |
6a34fd2f EZ |
1378 | { |
1379 | i = -1; | |
1380 | break; | |
1381 | } | |
1382 | if (i == -1) | |
1383 | continue; | |
1384 | } | |
1385 | ||
9ce5d3bb | 1386 | record_include_file: |
6a34fd2f EZ |
1387 | |
1388 | psymtab_include_list[includes_used++] = namestring; | |
1389 | if (includes_used >= includes_allocated) | |
9ce5d3bb | 1390 | { |
0d5cff50 | 1391 | const char **orig = psymtab_include_list; |
6a34fd2f | 1392 | |
0d5cff50 DE |
1393 | psymtab_include_list = (const char **) |
1394 | alloca ((includes_allocated *= 2) * sizeof (const char *)); | |
9ce5d3bb | 1395 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 1396 | includes_used * sizeof (const char *)); |
9ce5d3bb | 1397 | } |
6a34fd2f EZ |
1398 | continue; |
1399 | } | |
0963b4bd MS |
1400 | case N_LSYM: /* Typedef or automatic variable. */ |
1401 | case N_STSYM: /* Data seg var -- static. */ | |
9ce5d3bb DE |
1402 | case N_LCSYM: /* BSS " */ |
1403 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
1404 | case N_NBSTS: /* Gould nobase. */ | |
1405 | case N_NBLCS: /* symbols. */ | |
1406 | case N_FUN: | |
1407 | case N_GSYM: /* Global (extern) variable; can be | |
063e58ba | 1408 | data or bss (sigh FIXME). */ |
6a34fd2f EZ |
1409 | |
1410 | /* Following may probably be ignored; I'll leave them here | |
1411 | for now (until I do Pascal and Modula 2 extensions). */ | |
1412 | ||
9ce5d3bb | 1413 | case N_PC: /* I may or may not need this; I |
063e58ba | 1414 | suspect not. */ |
0963b4bd | 1415 | case N_M2C: /* I suspect that I can ignore this here. */ |
9ce5d3bb | 1416 | case N_SCOPE: /* Same. */ |
131fe1bb | 1417 | { |
a121b7c1 | 1418 | const char *p; |
6a34fd2f | 1419 | |
83b94be5 | 1420 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1421 | |
1422 | /* See if this is an end of function stab. */ | |
1423 | if (pst && nlist.n_type == N_FUN && *namestring == '\000') | |
9ce5d3bb DE |
1424 | { |
1425 | CORE_ADDR valu; | |
1426 | ||
1427 | /* It's value is the size (in bytes) of the function for | |
1428 | function relative stabs, or the address of the function's | |
1429 | end for old style stabs. */ | |
1430 | valu = nlist.n_value + last_function_start; | |
79748972 | 1431 | if (pst->raw_text_high () == 0 || valu > pst->raw_text_high ()) |
4ae976d1 | 1432 | pst->set_text_high (valu); |
9ce5d3bb DE |
1433 | break; |
1434 | } | |
6a34fd2f EZ |
1435 | |
1436 | p = (char *) strchr (namestring, ':'); | |
1437 | if (!p) | |
0963b4bd | 1438 | continue; /* Not a debugging symbol. */ |
6a34fd2f | 1439 | |
71c25dea | 1440 | sym_len = 0; |
87bc73ea | 1441 | sym_name = NULL; /* pacify "gcc -Werror" */ |
71c25dea TT |
1442 | if (psymtab_language == language_cplus) |
1443 | { | |
2f408ecb PA |
1444 | std::string name (namestring, p - namestring); |
1445 | std::string new_name = cp_canonicalize_string (name.c_str ()); | |
1446 | if (!new_name.empty ()) | |
1447 | { | |
1448 | sym_len = new_name.length (); | |
224c3ddb | 1449 | sym_name = (char *) obstack_copy0 (&objfile->objfile_obstack, |
2f408ecb PA |
1450 | new_name.c_str (), |
1451 | sym_len); | |
1452 | } | |
1453 | } | |
71c25dea TT |
1454 | |
1455 | if (sym_len == 0) | |
1456 | { | |
1457 | sym_name = namestring; | |
1458 | sym_len = p - namestring; | |
1459 | } | |
1460 | ||
6a34fd2f EZ |
1461 | /* Main processing section for debugging symbols which |
1462 | the initial read through the symbol tables needs to worry | |
1463 | about. If we reach this point, the symbol which we are | |
1464 | considering is definitely one we are interested in. | |
1465 | p must also contain the (valid) index into the namestring | |
1466 | which indicates the debugging type symbol. */ | |
1467 | ||
1468 | switch (p[1]) | |
9ce5d3bb DE |
1469 | { |
1470 | case 'S': | |
5e2b427d | 1471 | if (gdbarch_static_transform_name_p (gdbarch)) |
e81cff30 | 1472 | gdbarch_static_transform_name (gdbarch, namestring); |
9ce5d3bb | 1473 | |
04a679b8 | 1474 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb | 1475 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 1476 | data_sect_index, |
75aedd27 | 1477 | psymbol_placement::STATIC, |
1762568f | 1478 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1479 | continue; |
131fe1bb | 1480 | |
9ce5d3bb | 1481 | case 'G': |
9ce5d3bb | 1482 | /* The addresses in these entries are reported to be |
0963b4bd | 1483 | wrong. See the code that reads 'G's for symtabs. */ |
04a679b8 | 1484 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb | 1485 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 1486 | data_sect_index, |
75aedd27 | 1487 | psymbol_placement::GLOBAL, |
1762568f | 1488 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1489 | continue; |
6a34fd2f | 1490 | |
9ce5d3bb DE |
1491 | case 'T': |
1492 | /* When a 'T' entry is defining an anonymous enum, it | |
1493 | may have a name which is the empty string, or a | |
1494 | single space. Since they're not really defining a | |
1495 | symbol, those shouldn't go in the partial symbol | |
1496 | table. We do pick up the elements of such enums at | |
1497 | 'check_enum:', below. */ | |
1498 | if (p >= namestring + 2 | |
1499 | || (p == namestring + 1 | |
1500 | && namestring[0] != ' ')) | |
1501 | { | |
04a679b8 | 1502 | add_psymbol_to_list (sym_name, sym_len, 1, |
79748972 | 1503 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 1504 | psymbol_placement::STATIC, |
1762568f | 1505 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1506 | if (p[2] == 't') |
1507 | { | |
1508 | /* Also a typedef with the same name. */ | |
04a679b8 | 1509 | add_psymbol_to_list (sym_name, sym_len, 1, |
79748972 | 1510 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 1511 | psymbol_placement::STATIC, |
1762568f | 1512 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1513 | p += 1; |
1514 | } | |
1515 | } | |
1516 | goto check_enum; | |
131fe1bb | 1517 | |
9ce5d3bb | 1518 | case 't': |
0963b4bd | 1519 | if (p != namestring) /* a name is there, not just :T... */ |
9ce5d3bb | 1520 | { |
04a679b8 | 1521 | add_psymbol_to_list (sym_name, sym_len, 1, |
79748972 | 1522 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 1523 | psymbol_placement::STATIC, |
1762568f | 1524 | 0, psymtab_language, objfile); |
9ce5d3bb DE |
1525 | } |
1526 | check_enum: | |
1527 | /* If this is an enumerated type, we need to | |
1528 | add all the enum constants to the partial symbol | |
1529 | table. This does not cover enums without names, e.g. | |
1530 | "enum {a, b} c;" in C, but fortunately those are | |
1531 | rare. There is no way for GDB to find those from the | |
1532 | enum type without spending too much time on it. Thus | |
1533 | to solve this problem, the compiler needs to put out the | |
1534 | enum in a nameless type. GCC2 does this. */ | |
1535 | ||
1536 | /* We are looking for something of the form | |
1537 | <name> ":" ("t" | "T") [<number> "="] "e" | |
1538 | {<constant> ":" <value> ","} ";". */ | |
1539 | ||
1540 | /* Skip over the colon and the 't' or 'T'. */ | |
1541 | p += 2; | |
1542 | /* This type may be given a number. Also, numbers can come | |
1543 | in pairs like (0,26). Skip over it. */ | |
1544 | while ((*p >= '0' && *p <= '9') | |
1545 | || *p == '(' || *p == ',' || *p == ')' | |
1546 | || *p == '=') | |
1547 | p++; | |
1548 | ||
1549 | if (*p++ == 'e') | |
1550 | { | |
1551 | /* The aix4 compiler emits extra crud before the members. */ | |
1552 | if (*p == '-') | |
1553 | { | |
1554 | /* Skip over the type (?). */ | |
1555 | while (*p != ':') | |
1556 | p++; | |
6a34fd2f | 1557 | |
9ce5d3bb | 1558 | /* Skip over the colon. */ |
6a34fd2f | 1559 | p++; |
9ce5d3bb | 1560 | } |
6a34fd2f | 1561 | |
9ce5d3bb DE |
1562 | /* We have found an enumerated type. */ |
1563 | /* According to comments in read_enum_type | |
1564 | a comma could end it instead of a semicolon. | |
1565 | I don't know where that happens. | |
1566 | Accept either. */ | |
1567 | while (*p && *p != ';' && *p != ',') | |
1568 | { | |
a121b7c1 | 1569 | const char *q; |
9ce5d3bb DE |
1570 | |
1571 | /* Check for and handle cretinous dbx symbol name | |
1572 | continuation! */ | |
1573 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
1574 | p = next_symbol_text (objfile); | |
1575 | ||
1576 | /* Point to the character after the name | |
1577 | of the enum constant. */ | |
1578 | for (q = p; *q && *q != ':'; q++) | |
1579 | ; | |
1580 | /* Note that the value doesn't matter for | |
1581 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 1582 | add_psymbol_to_list (p, q - p, 1, |
79748972 | 1583 | VAR_DOMAIN, LOC_CONST, -1, |
75aedd27 | 1584 | psymbol_placement::STATIC, 0, |
1762568f | 1585 | psymtab_language, objfile); |
9ce5d3bb DE |
1586 | /* Point past the name. */ |
1587 | p = q; | |
1588 | /* Skip over the value. */ | |
1589 | while (*p && *p != ',') | |
1590 | p++; | |
1591 | /* Advance past the comma. */ | |
1592 | if (*p) | |
1593 | p++; | |
1594 | } | |
1595 | } | |
1596 | continue; | |
131fe1bb | 1597 | |
9ce5d3bb DE |
1598 | case 'c': |
1599 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 1600 | add_psymbol_to_list (sym_name, sym_len, 1, |
79748972 | 1601 | VAR_DOMAIN, LOC_CONST, -1, |
75aedd27 | 1602 | psymbol_placement::STATIC, 0, |
1762568f | 1603 | psymtab_language, objfile); |
9ce5d3bb | 1604 | continue; |
6a34fd2f | 1605 | |
9ce5d3bb DE |
1606 | case 'f': |
1607 | if (! pst) | |
1608 | { | |
1609 | int name_len = p - namestring; | |
224c3ddb | 1610 | char *name = (char *) xmalloc (name_len + 1); |
9a619af0 | 1611 | |
9ce5d3bb DE |
1612 | memcpy (name, namestring, name_len); |
1613 | name[name_len] = '\0'; | |
1614 | function_outside_compilation_unit_complaint (name); | |
1615 | xfree (name); | |
1616 | } | |
0963b4bd | 1617 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1618 | last_function_name = namestring; |
1619 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1620 | value for the bottom of the text seg in those cases. */ |
79748972 | 1621 | if (nlist.n_value == 0 |
5e2b427d | 1622 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1623 | { |
79748972 TT |
1624 | struct bound_minimal_symbol minsym |
1625 | = find_stab_function (namestring, | |
1626 | pst ? pst->filename : NULL, | |
1627 | objfile); | |
1628 | if (minsym.minsym != NULL) | |
1629 | nlist.n_value = MSYMBOL_VALUE_RAW_ADDRESS (minsym.minsym); | |
9ce5d3bb DE |
1630 | } |
1631 | if (pst && textlow_not_set | |
5e2b427d | 1632 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1633 | { |
4ae976d1 | 1634 | pst->set_text_low (nlist.n_value); |
9ce5d3bb DE |
1635 | textlow_not_set = 0; |
1636 | } | |
1637 | /* End kludge. */ | |
1638 | ||
1639 | /* Keep track of the start of the last function so we | |
1640 | can handle end of function symbols. */ | |
1641 | last_function_start = nlist.n_value; | |
1642 | ||
1643 | /* In reordered executables this function may lie outside | |
1644 | the bounds created by N_SO symbols. If that's the case | |
1645 | use the address of this function as the low bound for | |
1646 | the partial symbol table. */ | |
1647 | if (pst | |
1648 | && (textlow_not_set | |
79748972 TT |
1649 | || (nlist.n_value < pst->raw_text_low () |
1650 | && (nlist.n_value != 0)))) | |
9ce5d3bb | 1651 | { |
4ae976d1 | 1652 | pst->set_text_low (nlist.n_value); |
9ce5d3bb DE |
1653 | textlow_not_set = 0; |
1654 | } | |
04a679b8 | 1655 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb | 1656 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 1657 | SECT_OFF_TEXT (objfile), |
75aedd27 | 1658 | psymbol_placement::STATIC, |
1762568f | 1659 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1660 | continue; |
6a34fd2f | 1661 | |
9ce5d3bb DE |
1662 | /* Global functions were ignored here, but now they |
1663 | are put into the global psymtab like one would expect. | |
1664 | They're also in the minimal symbol table. */ | |
1665 | case 'F': | |
1666 | if (! pst) | |
1667 | { | |
1668 | int name_len = p - namestring; | |
224c3ddb | 1669 | char *name = (char *) xmalloc (name_len + 1); |
9a619af0 | 1670 | |
9ce5d3bb DE |
1671 | memcpy (name, namestring, name_len); |
1672 | name[name_len] = '\0'; | |
1673 | function_outside_compilation_unit_complaint (name); | |
1674 | xfree (name); | |
1675 | } | |
0963b4bd | 1676 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1677 | last_function_name = namestring; |
1678 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1679 | value for the bottom of the text seg in those cases. */ |
79748972 | 1680 | if (nlist.n_value == 0 |
5e2b427d | 1681 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1682 | { |
79748972 TT |
1683 | struct bound_minimal_symbol minsym |
1684 | = find_stab_function (namestring, | |
1685 | pst ? pst->filename : NULL, | |
1686 | objfile); | |
1687 | if (minsym.minsym != NULL) | |
1688 | nlist.n_value = MSYMBOL_VALUE_RAW_ADDRESS (minsym.minsym); | |
9ce5d3bb DE |
1689 | } |
1690 | if (pst && textlow_not_set | |
5e2b427d | 1691 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1692 | { |
4ae976d1 | 1693 | pst->set_text_low (nlist.n_value); |
9ce5d3bb DE |
1694 | textlow_not_set = 0; |
1695 | } | |
1696 | /* End kludge. */ | |
1697 | ||
1698 | /* Keep track of the start of the last function so we | |
1699 | can handle end of function symbols. */ | |
1700 | last_function_start = nlist.n_value; | |
1701 | ||
1702 | /* In reordered executables this function may lie outside | |
1703 | the bounds created by N_SO symbols. If that's the case | |
1704 | use the address of this function as the low bound for | |
1705 | the partial symbol table. */ | |
1706 | if (pst | |
1707 | && (textlow_not_set | |
79748972 TT |
1708 | || (nlist.n_value < pst->raw_text_low () |
1709 | && (nlist.n_value != 0)))) | |
9ce5d3bb | 1710 | { |
4ae976d1 | 1711 | pst->set_text_low (nlist.n_value); |
9ce5d3bb DE |
1712 | textlow_not_set = 0; |
1713 | } | |
04a679b8 | 1714 | add_psymbol_to_list (sym_name, sym_len, 1, |
9ce5d3bb | 1715 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 1716 | SECT_OFF_TEXT (objfile), |
75aedd27 | 1717 | psymbol_placement::GLOBAL, |
1762568f | 1718 | nlist.n_value, psymtab_language, objfile); |
9ce5d3bb | 1719 | continue; |
6a34fd2f | 1720 | |
9ce5d3bb DE |
1721 | /* Two things show up here (hopefully); static symbols of |
1722 | local scope (static used inside braces) or extensions | |
1723 | of structure symbols. We can ignore both. */ | |
1724 | case 'V': | |
1725 | case '(': | |
1726 | case '0': | |
1727 | case '1': | |
1728 | case '2': | |
1729 | case '3': | |
1730 | case '4': | |
1731 | case '5': | |
1732 | case '6': | |
1733 | case '7': | |
1734 | case '8': | |
1735 | case '9': | |
1736 | case '-': | |
0963b4bd | 1737 | case '#': /* For symbol identification (used in live ranges). */ |
9ce5d3bb | 1738 | continue; |
6a34fd2f | 1739 | |
9ce5d3bb DE |
1740 | case ':': |
1741 | /* It is a C++ nested symbol. We don't need to record it | |
1742 | (I don't think); if we try to look up foo::bar::baz, | |
1743 | then symbols for the symtab containing foo should get | |
1744 | read in, I think. */ | |
1745 | /* Someone says sun cc puts out symbols like | |
1746 | /foo/baz/maclib::/usr/local/bin/maclib, | |
1747 | which would get here with a symbol type of ':'. */ | |
1748 | continue; | |
6a34fd2f | 1749 | |
9ce5d3bb DE |
1750 | default: |
1751 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
1752 | of a continued stab can show up here. The question is | |
1753 | whether they ever can mimic a normal stab--it would be | |
1754 | nice if not, since we certainly don't want to spend the | |
1755 | time searching to the end of every string looking for | |
1756 | a backslash. */ | |
6a34fd2f | 1757 | |
b98664d3 | 1758 | complaint (_("unknown symbol descriptor `%c'"), |
9ce5d3bb DE |
1759 | p[1]); |
1760 | ||
1761 | /* Ignore it; perhaps it is an extension that we don't | |
1762 | know about. */ | |
1763 | continue; | |
1764 | } | |
131fe1bb | 1765 | } |
6a34fd2f | 1766 | |
9ce5d3bb | 1767 | case N_EXCL: |
6a34fd2f | 1768 | |
83b94be5 | 1769 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1770 | |
1771 | /* Find the corresponding bincl and mark that psymtab on the | |
0963b4bd | 1772 | psymtab dependency list. */ |
6a34fd2f EZ |
1773 | { |
1774 | struct partial_symtab *needed_pst = | |
1775 | find_corresponding_bincl_psymtab (namestring, nlist.n_value); | |
1776 | ||
1777 | /* If this include file was defined earlier in this file, | |
1778 | leave it alone. */ | |
1779 | if (needed_pst == pst) | |
1780 | continue; | |
1781 | ||
1782 | if (needed_pst) | |
1783 | { | |
1784 | int i; | |
1785 | int found = 0; | |
1786 | ||
1787 | for (i = 0; i < dependencies_used; i++) | |
1788 | if (dependency_list[i] == needed_pst) | |
1789 | { | |
1790 | found = 1; | |
1791 | break; | |
1792 | } | |
1793 | ||
1794 | /* If it's already in the list, skip the rest. */ | |
1795 | if (found) | |
1796 | continue; | |
1797 | ||
1798 | dependency_list[dependencies_used++] = needed_pst; | |
1799 | if (dependencies_used >= dependencies_allocated) | |
1800 | { | |
1801 | struct partial_symtab **orig = dependency_list; | |
9a619af0 | 1802 | |
6a34fd2f EZ |
1803 | dependency_list = |
1804 | (struct partial_symtab **) | |
1805 | alloca ((dependencies_allocated *= 2) | |
1806 | * sizeof (struct partial_symtab *)); | |
4efb68b1 | 1807 | memcpy (dependency_list, orig, |
6a34fd2f EZ |
1808 | (dependencies_used |
1809 | * sizeof (struct partial_symtab *))); | |
1810 | #ifdef DEBUG_INFO | |
063e58ba | 1811 | fprintf_unfiltered (gdb_stderr, |
3e43a32a MS |
1812 | "Had to reallocate " |
1813 | "dependency list.\n"); | |
063e58ba MD |
1814 | fprintf_unfiltered (gdb_stderr, |
1815 | "New dependencies allocated: %d\n", | |
6a34fd2f EZ |
1816 | dependencies_allocated); |
1817 | #endif | |
1818 | } | |
1819 | } | |
1820 | } | |
1821 | continue; | |
1822 | ||
9ce5d3bb | 1823 | case N_ENDM: |
4ae976d1 TT |
1824 | /* Solaris 2 end of module, finish current partial symbol |
1825 | table. dbx_end_psymtab will set the high text address of | |
1826 | PST to the proper value, which is necessary if a module | |
1827 | compiled without debugging info follows this module. */ | |
5e2b427d | 1828 | if (pst && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1829 | { |
8763cede DE |
1830 | dbx_end_psymtab (objfile, pst, |
1831 | psymtab_include_list, includes_used, | |
1832 | symnum * symbol_size, | |
1833 | (CORE_ADDR) 0, dependency_list, | |
1834 | dependencies_used, textlow_not_set); | |
9ce5d3bb DE |
1835 | pst = (struct partial_symtab *) 0; |
1836 | includes_used = 0; | |
1837 | dependencies_used = 0; | |
578933ab | 1838 | has_line_numbers = 0; |
9ce5d3bb | 1839 | } |
6a34fd2f | 1840 | continue; |
c906108c | 1841 | |
9ce5d3bb | 1842 | case N_RBRAC: |
6a34fd2f EZ |
1843 | #ifdef HANDLE_RBRAC |
1844 | HANDLE_RBRAC (nlist.n_value); | |
1845 | continue; | |
1846 | #endif | |
9ce5d3bb DE |
1847 | case N_EINCL: |
1848 | case N_DSLINE: | |
1849 | case N_BSLINE: | |
1850 | case N_SSYM: /* Claim: Structure or union element. | |
063e58ba | 1851 | Hopefully, I can ignore this. */ |
0963b4bd | 1852 | case N_ENTRY: /* Alternate entry point; can ignore. */ |
9ce5d3bb DE |
1853 | case N_MAIN: /* Can definitely ignore this. */ |
1854 | case N_CATCH: /* These are GNU C++ extensions */ | |
0963b4bd | 1855 | case N_EHDECL: /* that can safely be ignored here. */ |
9ce5d3bb DE |
1856 | case N_LENG: |
1857 | case N_BCOMM: | |
1858 | case N_ECOMM: | |
1859 | case N_ECOML: | |
1860 | case N_FNAME: | |
1861 | case N_SLINE: | |
1862 | case N_RSYM: | |
1863 | case N_PSYM: | |
ec48dc8b PM |
1864 | case N_BNSYM: |
1865 | case N_ENSYM: | |
9ce5d3bb DE |
1866 | case N_LBRAC: |
1867 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
1868 | case N_DEFD: /* GNU Modula-2 */ | |
1869 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
1870 | ||
0963b4bd | 1871 | case N_OBJ: /* Useless types from Solaris. */ |
9ce5d3bb DE |
1872 | case N_OPT: |
1873 | case N_PATCH: | |
0963b4bd | 1874 | /* These symbols aren't interesting; don't worry about them. */ |
6a34fd2f EZ |
1875 | continue; |
1876 | ||
9ce5d3bb | 1877 | default: |
6a34fd2f EZ |
1878 | /* If we haven't found it yet, ignore it. It's probably some |
1879 | new type we don't know about yet. */ | |
bb599908 | 1880 | unknown_symtype_complaint (hex_string (nlist.n_type)); |
6a34fd2f EZ |
1881 | continue; |
1882 | } | |
c906108c SS |
1883 | } |
1884 | ||
1885 | /* If there's stuff to be cleaned up, clean it up. */ | |
c906108c SS |
1886 | if (pst) |
1887 | { | |
4ae976d1 TT |
1888 | /* Don't set high text address of PST lower than it already |
1889 | is. */ | |
c906108c | 1890 | CORE_ADDR text_end = |
6a34fd2f | 1891 | (lowest_text_address == (CORE_ADDR) -1 |
79748972 | 1892 | ? text_addr |
6a34fd2f EZ |
1893 | : lowest_text_address) |
1894 | + text_size; | |
c906108c | 1895 | |
8763cede DE |
1896 | dbx_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
1897 | symnum * symbol_size, | |
79748972 TT |
1898 | (text_end > pst->raw_text_high () |
1899 | ? text_end : pst->raw_text_high ()), | |
8763cede | 1900 | dependency_list, dependencies_used, textlow_not_set); |
c906108c | 1901 | } |
c906108c SS |
1902 | } |
1903 | ||
1904 | /* Allocate and partially fill a partial symtab. It will be | |
1905 | completely filled at the end of the symbol list. | |
1906 | ||
1907 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1908 | is the address relative to which its symbols are (incremental) or 0 | |
0963b4bd | 1909 | (normal). */ |
c906108c | 1910 | |
d4f3574e | 1911 | static struct partial_symtab * |
a121b7c1 | 1912 | start_psymtab (struct objfile *objfile, const char *filename, CORE_ADDR textlow, |
939652a5 | 1913 | int ldsymoff) |
c906108c SS |
1914 | { |
1915 | struct partial_symtab *result = | |
939652a5 | 1916 | start_psymtab_common (objfile, filename, textlow); |
c906108c | 1917 | |
8d749320 SM |
1918 | result->read_symtab_private = |
1919 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 1920 | LDSYMOFF (result) = ldsymoff; |
257e7a09 | 1921 | result->read_symtab = dbx_read_symtab; |
c5aa993b JM |
1922 | SYMBOL_SIZE (result) = symbol_size; |
1923 | SYMBOL_OFFSET (result) = symbol_table_offset; | |
1924 | STRING_OFFSET (result) = string_table_offset; | |
1925 | FILE_STRING_OFFSET (result) = file_string_table_offset; | |
c906108c | 1926 | |
0963b4bd | 1927 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c | 1928 | psymtab_language = deduce_language_from_filename (filename); |
5ffa0793 | 1929 | PST_LANGUAGE (result) = psymtab_language; |
c906108c SS |
1930 | |
1931 | return result; | |
1932 | } | |
1933 | ||
0963b4bd | 1934 | /* Close off the current usage of PST. |
c906108c SS |
1935 | Returns PST or NULL if the partial symtab was empty and thrown away. |
1936 | ||
1937 | FIXME: List variables and peculiarities of same. */ | |
1938 | ||
1939 | struct partial_symtab * | |
8763cede DE |
1940 | dbx_end_psymtab (struct objfile *objfile, struct partial_symtab *pst, |
1941 | const char **include_list, int num_includes, | |
1942 | int capping_symbol_offset, CORE_ADDR capping_text, | |
1943 | struct partial_symtab **dependency_list, | |
1944 | int number_dependencies, | |
1945 | int textlow_not_set) | |
c906108c SS |
1946 | { |
1947 | int i; | |
5e2b427d | 1948 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
1949 | |
1950 | if (capping_symbol_offset != -1) | |
c5aa993b | 1951 | LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst); |
4ae976d1 | 1952 | pst->set_text_high (capping_text); |
c906108c | 1953 | |
c906108c SS |
1954 | /* Under Solaris, the N_SO symbols always have a value of 0, |
1955 | instead of the usual address of the .o file. Therefore, | |
1956 | we have to do some tricks to fill in texthigh and textlow. | |
6a34fd2f | 1957 | The first trick is: if we see a static |
c906108c SS |
1958 | or global function, and the textlow for the current pst |
1959 | is not set (ie: textlow_not_set), then we use that function's | |
1960 | address for the textlow of the pst. */ | |
1961 | ||
1962 | /* Now, to fill in texthigh, we remember the last function seen | |
6a34fd2f | 1963 | in the .o file. Also, there's a hack in |
c906108c SS |
1964 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field |
1965 | to here via the misc_info field. Therefore, we can fill in | |
1966 | a reliable texthigh by taking the address plus size of the | |
1967 | last function in the file. */ | |
1968 | ||
52948f01 | 1969 | if (!pst->text_high_valid && last_function_name |
5e2b427d | 1970 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
c906108c | 1971 | { |
c906108c | 1972 | int n; |
3b7344d5 | 1973 | struct bound_minimal_symbol minsym; |
c906108c | 1974 | |
a121b7c1 PA |
1975 | const char *colon = strchr (last_function_name, ':'); |
1976 | if (colon == NULL) | |
1977 | n = 0; | |
1978 | else | |
1979 | n = colon - last_function_name; | |
1980 | char *p = (char *) alloca (n + 2); | |
c906108c SS |
1981 | strncpy (p, last_function_name, n); |
1982 | p[n] = 0; | |
c5aa993b | 1983 | |
c906108c | 1984 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
3b7344d5 | 1985 | if (minsym.minsym == NULL) |
c906108c SS |
1986 | { |
1987 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
1988 | try again with an appended underscore if the minimal symbol | |
1989 | was not found. */ | |
1990 | p[n] = '_'; | |
1991 | p[n + 1] = 0; | |
1992 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); | |
1993 | } | |
1994 | ||
3b7344d5 | 1995 | if (minsym.minsym) |
79748972 | 1996 | pst->set_text_high (MSYMBOL_VALUE_RAW_ADDRESS (minsym.minsym) |
4ae976d1 | 1997 | + MSYMBOL_SIZE (minsym.minsym)); |
c906108c SS |
1998 | |
1999 | last_function_name = NULL; | |
2000 | } | |
2001 | ||
5e2b427d | 2002 | if (!gdbarch_sofun_address_maybe_missing (gdbarch)) |
203c3895 | 2003 | ; |
0963b4bd | 2004 | /* This test will be true if the last .o file is only data. */ |
203c3895 | 2005 | else if (textlow_not_set) |
79748972 | 2006 | pst->set_text_low (pst->raw_text_high ()); |
c906108c SS |
2007 | else |
2008 | { | |
c906108c | 2009 | /* If we know our own starting text address, then walk through all other |
c5aa993b JM |
2010 | psymtabs for this objfile, and if any didn't know their ending text |
2011 | address, set it to our starting address. Take care to not set our | |
52948f01 | 2012 | own ending address to our starting address. */ |
c906108c | 2013 | |
b22a7c6a | 2014 | for (partial_symtab *p1 : objfile_psymtabs (objfile)) |
52948f01 | 2015 | if (!p1->text_high_valid && p1->text_low_valid && p1 != pst) |
79748972 | 2016 | p1->set_text_high (pst->raw_text_low ()); |
c906108c SS |
2017 | } |
2018 | ||
2019 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
c906108c | 2020 | |
8763cede | 2021 | end_psymtab_common (objfile, pst); |
c906108c SS |
2022 | |
2023 | pst->number_of_dependencies = number_dependencies; | |
2024 | if (number_dependencies) | |
2025 | { | |
a9342b62 TT |
2026 | pst->dependencies |
2027 | = objfile->partial_symtabs->allocate_dependencies (number_dependencies); | |
c906108c | 2028 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2029 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2030 | } |
2031 | else | |
2032 | pst->dependencies = 0; | |
2033 | ||
2034 | for (i = 0; i < num_includes; i++) | |
2035 | { | |
2036 | struct partial_symtab *subpst = | |
9a619af0 | 2037 | allocate_psymtab (include_list[i], objfile); |
c906108c | 2038 | |
c906108c | 2039 | subpst->read_symtab_private = |
8d749320 | 2040 | XOBNEW (&objfile->objfile_obstack, struct symloc); |
c5aa993b | 2041 | LDSYMOFF (subpst) = |
4ae976d1 | 2042 | LDSYMLEN (subpst) = 0; |
c906108c SS |
2043 | |
2044 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2045 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 | 2046 | subpst->dependencies = |
a9342b62 | 2047 | objfile->partial_symtabs->allocate_dependencies (1); |
c906108c SS |
2048 | subpst->dependencies[0] = pst; |
2049 | subpst->number_of_dependencies = 1; | |
2050 | ||
c906108c SS |
2051 | subpst->read_symtab = pst->read_symtab; |
2052 | } | |
2053 | ||
c906108c SS |
2054 | if (num_includes == 0 |
2055 | && number_dependencies == 0 | |
2056 | && pst->n_global_syms == 0 | |
2057 | && pst->n_static_syms == 0 | |
2058 | && has_line_numbers == 0) | |
2059 | { | |
2060 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2061 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2062 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b JM |
2063 | any symbols in them. There can be a lot of them. But this check |
2064 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
2065 | is not empty, but we don't realize that. Fixing that without slowing | |
2066 | things down might be tricky. */ | |
c906108c | 2067 | |
5c80ed9d | 2068 | discard_psymtab (objfile, pst); |
c906108c SS |
2069 | |
2070 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2071 | pst = NULL; |
c906108c SS |
2072 | } |
2073 | return pst; | |
2074 | } | |
2075 | \f | |
2076 | static void | |
5c80ed9d | 2077 | dbx_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 2078 | { |
c906108c | 2079 | int i; |
c5aa993b | 2080 | |
c906108c SS |
2081 | if (pst->readin) |
2082 | { | |
0963b4bd MS |
2083 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. " |
2084 | "Shouldn't happen.\n", | |
c5aa993b | 2085 | pst->filename); |
c906108c SS |
2086 | return; |
2087 | } | |
2088 | ||
0963b4bd | 2089 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
2090 | for (i = 0; i < pst->number_of_dependencies; i++) |
2091 | if (!pst->dependencies[i]->readin) | |
2092 | { | |
2093 | /* Inform about additional files that need to be read in. */ | |
2094 | if (info_verbose) | |
2095 | { | |
2096 | fputs_filtered (" ", gdb_stdout); | |
2097 | wrap_here (""); | |
2098 | fputs_filtered ("and ", gdb_stdout); | |
2099 | wrap_here (""); | |
2100 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 2101 | wrap_here (""); /* Flush output. */ |
c906108c SS |
2102 | gdb_flush (gdb_stdout); |
2103 | } | |
5c80ed9d | 2104 | dbx_psymtab_to_symtab_1 (objfile, pst->dependencies[i]); |
c906108c SS |
2105 | } |
2106 | ||
0963b4bd | 2107 | if (LDSYMLEN (pst)) /* Otherwise it's a dummy. */ |
c906108c SS |
2108 | { |
2109 | /* Init stuff necessary for reading in symbols */ | |
2110 | stabsread_init (); | |
33c7c59d | 2111 | scoped_free_pendings free_pending; |
c906108c SS |
2112 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
2113 | symbol_size = SYMBOL_SIZE (pst); | |
2114 | ||
0963b4bd | 2115 | /* Read in this file's symbols. */ |
5c80ed9d TT |
2116 | bfd_seek (objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); |
2117 | read_ofile_symtab (objfile, pst); | |
c906108c SS |
2118 | } |
2119 | ||
2120 | pst->readin = 1; | |
2121 | } | |
2122 | ||
2123 | /* Read in all of the symbols for a given psymtab for real. | |
257e7a09 | 2124 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
2125 | |
2126 | static void | |
257e7a09 | 2127 | dbx_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 2128 | { |
257e7a09 | 2129 | if (self->readin) |
c906108c | 2130 | { |
0963b4bd MS |
2131 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. " |
2132 | "Shouldn't happen.\n", | |
257e7a09 | 2133 | self->filename); |
c906108c SS |
2134 | return; |
2135 | } | |
2136 | ||
257e7a09 | 2137 | if (LDSYMLEN (self) || self->number_of_dependencies) |
c906108c SS |
2138 | { |
2139 | /* Print the message now, before reading the string table, | |
c5aa993b | 2140 | to avoid disconcerting pauses. */ |
c906108c SS |
2141 | if (info_verbose) |
2142 | { | |
257e7a09 | 2143 | printf_filtered ("Reading in symbols for %s...", self->filename); |
c906108c SS |
2144 | gdb_flush (gdb_stdout); |
2145 | } | |
2146 | ||
c906108c SS |
2147 | next_symbol_text_func = dbx_next_symbol_text; |
2148 | ||
bf259e25 TT |
2149 | { |
2150 | scoped_restore restore_stabs_data = make_scoped_restore (&stabs_data); | |
2151 | gdb::unique_xmalloc_ptr<gdb_byte> data_holder; | |
2152 | if (DBX_STAB_SECTION (objfile)) | |
2153 | { | |
2154 | stabs_data | |
2155 | = symfile_relocate_debug_section (objfile, | |
2156 | DBX_STAB_SECTION (objfile), | |
2157 | NULL); | |
2158 | data_holder.reset (stabs_data); | |
2159 | } | |
c906108c | 2160 | |
bf259e25 TT |
2161 | dbx_psymtab_to_symtab_1 (objfile, self); |
2162 | } | |
086df311 | 2163 | |
c906108c SS |
2164 | /* Match with global symbols. This only needs to be done once, |
2165 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 2166 | scan_file_globals (objfile); |
c906108c SS |
2167 | |
2168 | /* Finish up the debug error message. */ | |
2169 | if (info_verbose) | |
2170 | printf_filtered ("done.\n"); | |
2171 | } | |
2172 | } | |
2173 | ||
0963b4bd | 2174 | /* Read in a defined section of a specific object file's symbols. */ |
c5aa993b | 2175 | |
c906108c | 2176 | static void |
5c80ed9d | 2177 | read_ofile_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 2178 | { |
a121b7c1 | 2179 | const char *namestring; |
52f0bd74 | 2180 | struct external_nlist *bufp; |
c906108c SS |
2181 | struct internal_nlist nlist; |
2182 | unsigned char type; | |
2183 | unsigned max_symnum; | |
52f0bd74 | 2184 | bfd *abfd; |
c906108c SS |
2185 | int sym_offset; /* Offset to start of symbols to read */ |
2186 | int sym_size; /* Size of symbols to read */ | |
2187 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
2188 | int text_size; /* Size of text segment for symbols */ | |
2189 | struct section_offsets *section_offsets; | |
2190 | ||
c5aa993b JM |
2191 | sym_offset = LDSYMOFF (pst); |
2192 | sym_size = LDSYMLEN (pst); | |
79748972 TT |
2193 | text_offset = pst->text_low (objfile); |
2194 | text_size = pst->text_high (objfile) - pst->text_low (objfile); | |
18a94d75 | 2195 | section_offsets = objfile->section_offsets; |
c906108c | 2196 | |
dd707e8e | 2197 | dbxread_objfile = objfile; |
c906108c SS |
2198 | |
2199 | stringtab_global = DBX_STRINGTAB (objfile); | |
46212e0b | 2200 | set_last_source_file (NULL); |
c906108c SS |
2201 | |
2202 | abfd = objfile->obfd; | |
0963b4bd | 2203 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol. */ |
c906108c | 2204 | symbuf_end = symbuf_idx = 0; |
086df311 DJ |
2205 | symbuf_read = 0; |
2206 | symbuf_left = sym_offset + sym_size; | |
c906108c SS |
2207 | |
2208 | /* It is necessary to actually read one symbol *before* the start | |
2209 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
2210 | occurs before the N_SO symbol. | |
2211 | ||
2212 | Detecting this in read_dbx_symtab | |
2213 | would slow down initial readin, so we look for it here instead. */ | |
c5aa993b | 2214 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c | 2215 | { |
086df311 | 2216 | stabs_seek (sym_offset - symbol_size); |
c906108c SS |
2217 | fill_symbuf (abfd); |
2218 | bufp = &symbuf[symbuf_idx++]; | |
2219 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2220 | OBJSTAT (objfile, n_stabs++); | |
2221 | ||
83b94be5 | 2222 | namestring = set_namestring (objfile, &nlist); |
c906108c SS |
2223 | |
2224 | processing_gcc_compilation = 0; | |
2225 | if (nlist.n_type == N_TEXT) | |
2226 | { | |
2227 | const char *tempstring = namestring; | |
2228 | ||
91f54576 | 2229 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2230 | processing_gcc_compilation = 1; |
91f54576 | 2231 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2232 | processing_gcc_compilation = 2; |
2233 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) | |
2234 | ++tempstring; | |
61012eef | 2235 | if (startswith (tempstring, "__gnu_compiled")) |
c906108c SS |
2236 | processing_gcc_compilation = 2; |
2237 | } | |
c906108c SS |
2238 | } |
2239 | else | |
2240 | { | |
2241 | /* The N_SO starting this symtab is the first symbol, so we | |
c5aa993b JM |
2242 | better not check the symbol before it. I'm not this can |
2243 | happen, but it doesn't hurt to check for it. */ | |
086df311 | 2244 | stabs_seek (sym_offset); |
c906108c SS |
2245 | processing_gcc_compilation = 0; |
2246 | } | |
2247 | ||
2248 | if (symbuf_idx == symbuf_end) | |
2249 | fill_symbuf (abfd); | |
2250 | bufp = &symbuf[symbuf_idx]; | |
2251 | if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO) | |
8a3fe4f8 | 2252 | error (_("First symbol in segment of executable not a source symbol")); |
c906108c SS |
2253 | |
2254 | max_symnum = sym_size / symbol_size; | |
2255 | ||
2256 | for (symnum = 0; | |
2257 | symnum < max_symnum; | |
2258 | symnum++) | |
2259 | { | |
0963b4bd | 2260 | QUIT; /* Allow this to be interruptable. */ |
c906108c | 2261 | if (symbuf_idx == symbuf_end) |
c5aa993b | 2262 | fill_symbuf (abfd); |
c906108c SS |
2263 | bufp = &symbuf[symbuf_idx++]; |
2264 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2265 | OBJSTAT (objfile, n_stabs++); | |
2266 | ||
2267 | type = bfd_h_get_8 (abfd, bufp->e_type); | |
2268 | ||
83b94be5 | 2269 | namestring = set_namestring (objfile, &nlist); |
c906108c | 2270 | |
c5aa993b JM |
2271 | if (type & N_STAB) |
2272 | { | |
7b1f21e5 PP |
2273 | if (sizeof (nlist.n_value) > 4 |
2274 | /* We are a 64-bit debugger debugging a 32-bit program. */ | |
2275 | && (type == N_LSYM || type == N_PSYM)) | |
2276 | /* We have to be careful with the n_value in the case of N_LSYM | |
2277 | and N_PSYM entries, because they are signed offsets from frame | |
2278 | pointer, but we actually read them as unsigned 32-bit values. | |
2279 | This is not a problem for 32-bit debuggers, for which negative | |
2280 | values end up being interpreted correctly (as negative | |
2281 | offsets) due to integer overflow. | |
2282 | But we need to sign-extend the value for 64-bit debuggers, | |
2283 | or we'll end up interpreting negative values as very large | |
2284 | positive offsets. */ | |
2285 | nlist.n_value = (nlist.n_value ^ 0x80000000) - 0x80000000; | |
c906108c | 2286 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
5ffa0793 PA |
2287 | namestring, section_offsets, objfile, |
2288 | PST_LANGUAGE (pst)); | |
c5aa993b | 2289 | } |
c906108c | 2290 | /* We skip checking for a new .o or -l file; that should never |
0963b4bd | 2291 | happen in this routine. */ |
c906108c SS |
2292 | else if (type == N_TEXT) |
2293 | { | |
2294 | /* I don't think this code will ever be executed, because | |
2295 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
2296 | the N_SO symbol which starts this source file. | |
2297 | However, there is no reason not to accept | |
2298 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
2299 | ||
91f54576 | 2300 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2301 | processing_gcc_compilation = 1; |
91f54576 | 2302 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2303 | processing_gcc_compilation = 2; |
c906108c | 2304 | } |
c5aa993b | 2305 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
9a619af0 | 2306 | || type == (unsigned char) N_NBTEXT) |
c5aa993b | 2307 | { |
c906108c SS |
2308 | /* Global symbol: see if we came across a dbx defintion for |
2309 | a corresponding symbol. If so, store the value. Remove | |
2310 | syms from the chain when their values are stored, but | |
2311 | search the whole chain, as there may be several syms from | |
0963b4bd | 2312 | different files with the same name. */ |
c906108c SS |
2313 | /* This is probably not true. Since the files will be read |
2314 | in one at a time, each reference to a global symbol will | |
0963b4bd MS |
2315 | be satisfied in each file as it appears. So we skip this |
2316 | section. */ | |
c906108c | 2317 | ; |
c5aa993b | 2318 | } |
c906108c SS |
2319 | } |
2320 | ||
4ae976d1 TT |
2321 | /* In a Solaris elf file, this variable, which comes from the value |
2322 | of the N_SO symbol, will still be 0. Luckily, text_offset, which | |
2323 | comes from low text address of PST, is correct. */ | |
2c99ee5c TT |
2324 | if (get_last_source_start_addr () == 0) |
2325 | set_last_source_start_addr (text_offset); | |
c906108c SS |
2326 | |
2327 | /* In reordered executables last_source_start_addr may not be the | |
2328 | lower bound for this symtab, instead use text_offset which comes | |
4ae976d1 | 2329 | from the low text address of PST, which is correct. */ |
2c99ee5c TT |
2330 | if (get_last_source_start_addr () > text_offset) |
2331 | set_last_source_start_addr (text_offset); | |
c906108c | 2332 | |
43f3e411 DE |
2333 | pst->compunit_symtab = end_symtab (text_offset + text_size, |
2334 | SECT_OFF_TEXT (objfile)); | |
c906108c | 2335 | |
c906108c | 2336 | end_stabs (); |
e9112110 | 2337 | |
dd707e8e | 2338 | dbxread_objfile = NULL; |
c906108c | 2339 | } |
c906108c | 2340 | \f |
c5aa993b | 2341 | |
195a3f6c TT |
2342 | /* Record the namespace that the function defined by SYMBOL was |
2343 | defined in, if necessary. BLOCK is the associated block; use | |
2344 | OBSTACK for allocation. */ | |
2345 | ||
2346 | static void | |
2347 | cp_set_block_scope (const struct symbol *symbol, | |
2348 | struct block *block, | |
2349 | struct obstack *obstack) | |
2350 | { | |
2351 | if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) | |
2352 | { | |
2353 | /* Try to figure out the appropriate namespace from the | |
2354 | demangled name. */ | |
2355 | ||
2356 | /* FIXME: carlton/2003-04-15: If the function in question is | |
2357 | a method of a class, the name will actually include the | |
2358 | name of the class as well. This should be harmless, but | |
2359 | is a little unfortunate. */ | |
2360 | ||
2361 | const char *name = SYMBOL_DEMANGLED_NAME (symbol); | |
2362 | unsigned int prefix_len = cp_entire_prefix_len (name); | |
2363 | ||
2364 | block_set_scope (block, | |
224c3ddb | 2365 | (const char *) obstack_copy0 (obstack, name, prefix_len), |
195a3f6c TT |
2366 | obstack); |
2367 | } | |
2368 | } | |
2369 | ||
c906108c SS |
2370 | /* This handles a single symbol from the symbol-file, building symbols |
2371 | into a GDB symtab. It takes these arguments and an implicit argument. | |
2372 | ||
2373 | TYPE is the type field of the ".stab" symbol entry. | |
2374 | DESC is the desc field of the ".stab" entry. | |
2375 | VALU is the value field of the ".stab" entry. | |
2376 | NAME is the symbol name, in our address space. | |
e31272c3 MK |
2377 | SECTION_OFFSETS is a set of amounts by which the sections of this |
2378 | object file were relocated when it was loaded into memory. Note | |
2379 | that these section_offsets are not the objfile->section_offsets but | |
2380 | the pst->section_offsets. All symbols that refer to memory | |
2381 | locations need to be offset by these amounts. | |
2382 | OBJFILE is the object file from which we are reading symbols. It | |
5ffa0793 PA |
2383 | is used in end_symtab. |
2384 | LANGUAGE is the language of the symtab. | |
2385 | */ | |
c906108c SS |
2386 | |
2387 | void | |
a121b7c1 | 2388 | process_one_symbol (int type, int desc, CORE_ADDR valu, const char *name, |
3189cb12 | 2389 | const struct section_offsets *section_offsets, |
5ffa0793 | 2390 | struct objfile *objfile, enum language language) |
c906108c | 2391 | { |
5e2b427d | 2392 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 2393 | struct context_stack *newobj; |
a60f3166 | 2394 | struct context_stack cstk; |
e31272c3 MK |
2395 | /* This remembers the address of the start of a function. It is |
2396 | used because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries | |
2397 | are relative to the current function's start address. On systems | |
2398 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, | |
2399 | and is used to relocate these symbol types rather than | |
2400 | SECTION_OFFSETS. */ | |
c906108c SS |
2401 | static CORE_ADDR function_start_offset; |
2402 | ||
e31272c3 MK |
2403 | /* This holds the address of the start of a function, without the |
2404 | system peculiarities of function_start_offset. */ | |
a1b9830c DJ |
2405 | static CORE_ADDR last_function_start; |
2406 | ||
54c7009d EZ |
2407 | /* If this is nonzero, we've seen an N_SLINE since the start of the |
2408 | current function. We use this to tell us to move the first sline | |
2409 | to the beginning of the function regardless of what its given | |
0963b4bd | 2410 | value is. */ |
a1b9830c DJ |
2411 | static int sline_found_in_function = 1; |
2412 | ||
e31272c3 MK |
2413 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this |
2414 | source file. Used to detect the SunPRO solaris compiler. */ | |
c906108c SS |
2415 | static int n_opt_found; |
2416 | ||
e31272c3 MK |
2417 | /* Something is wrong if we see real data before seeing a source |
2418 | file name. */ | |
c906108c | 2419 | |
46212e0b | 2420 | if (get_last_source_file () == NULL && type != (unsigned char) N_SO) |
c906108c SS |
2421 | { |
2422 | /* Ignore any symbols which appear before an N_SO symbol. | |
c5aa993b JM |
2423 | Currently no one puts symbols there, but we should deal |
2424 | gracefully with the case. A complain()t might be in order, | |
2425 | but this should not be an error (). */ | |
c906108c SS |
2426 | return; |
2427 | } | |
2428 | ||
2429 | switch (type) | |
2430 | { | |
2431 | case N_FUN: | |
2432 | case N_FNAME: | |
2433 | ||
2434 | if (*name == '\000') | |
2435 | { | |
e31272c3 MK |
2436 | /* This N_FUN marks the end of a function. This closes off |
2437 | the current block. */ | |
df8a16a1 | 2438 | struct block *block; |
0c5e171a | 2439 | |
edb0470b | 2440 | if (outermost_context_p ()) |
0c5e171a | 2441 | { |
23136709 | 2442 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2443 | break; |
2444 | } | |
2445 | ||
6b37567a JJ |
2446 | /* The following check is added before recording line 0 at |
2447 | end of function so as to handle hand-generated stabs | |
e31272c3 MK |
2448 | which may have an N_FUN stabs at the end of the function, |
2449 | but no N_SLINE stabs. */ | |
6b37567a | 2450 | if (sline_found_in_function) |
fbf65064 UW |
2451 | { |
2452 | CORE_ADDR addr = last_function_start + valu; | |
9a619af0 | 2453 | |
3c65e5b3 | 2454 | record_line (get_current_subfile (), 0, |
fbf65064 UW |
2455 | gdbarch_addr_bits_remove (gdbarch, addr)); |
2456 | } | |
6b37567a | 2457 | |
c906108c | 2458 | within_function = 0; |
a60f3166 | 2459 | cstk = pop_context (); |
c906108c SS |
2460 | |
2461 | /* Make a block for the local symbols within. */ | |
c233e9c6 | 2462 | block = finish_block (cstk.name, |
a60f3166 TT |
2463 | cstk.old_blocks, NULL, |
2464 | cstk.start_addr, cstk.start_addr + valu); | |
df8a16a1 DJ |
2465 | |
2466 | /* For C++, set the block's scope. */ | |
a60f3166 TT |
2467 | if (SYMBOL_LANGUAGE (cstk.name) == language_cplus) |
2468 | cp_set_block_scope (cstk.name, block, &objfile->objfile_obstack); | |
c906108c SS |
2469 | |
2470 | /* May be switching to an assembler file which may not be using | |
2471 | block relative stabs, so reset the offset. */ | |
1736a7bd | 2472 | function_start_offset = 0; |
c906108c SS |
2473 | |
2474 | break; | |
2475 | } | |
2476 | ||
a1b9830c DJ |
2477 | sline_found_in_function = 0; |
2478 | ||
e31272c3 | 2479 | /* Relocate for dynamic loading. */ |
b8fbeb18 | 2480 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
85ddcc70 | 2481 | valu = gdbarch_addr_bits_remove (gdbarch, valu); |
a1b9830c DJ |
2482 | last_function_start = valu; |
2483 | ||
c906108c SS |
2484 | goto define_a_symbol; |
2485 | ||
2486 | case N_LBRAC: | |
2487 | /* This "symbol" just indicates the start of an inner lexical | |
c5aa993b | 2488 | context within a function. */ |
c906108c SS |
2489 | |
2490 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2491 | if (n_opt_found && desc == 1) | |
2492 | break; | |
2493 | ||
1736a7bd | 2494 | valu += function_start_offset; |
c906108c | 2495 | |
ab8b8aca | 2496 | push_context (desc, valu); |
c906108c SS |
2497 | break; |
2498 | ||
2499 | case N_RBRAC: | |
2500 | /* This "symbol" just indicates the end of an inner lexical | |
c5aa993b | 2501 | context that was started with N_LBRAC. */ |
c906108c SS |
2502 | |
2503 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2504 | if (n_opt_found && desc == 1) | |
2505 | break; | |
2506 | ||
1736a7bd | 2507 | valu += function_start_offset; |
c906108c | 2508 | |
edb0470b | 2509 | if (outermost_context_p ()) |
0c5e171a | 2510 | { |
23136709 | 2511 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2512 | break; |
2513 | } | |
2514 | ||
a60f3166 TT |
2515 | cstk = pop_context (); |
2516 | if (desc != cstk.depth) | |
23136709 | 2517 | lbrac_mismatch_complaint (symnum); |
c906108c | 2518 | |
e148f09d | 2519 | if (*get_local_symbols () != NULL) |
1f077a3e | 2520 | { |
35156bae DJ |
2521 | /* GCC development snapshots from March to December of |
2522 | 2000 would output N_LSYM entries after N_LBRAC | |
2523 | entries. As a consequence, these symbols are simply | |
2524 | discarded. Complain if this is the case. */ | |
b98664d3 | 2525 | complaint (_("misplaced N_LBRAC entry; discarding local " |
3e43a32a | 2526 | "symbols which have no enclosing block")); |
1f077a3e | 2527 | } |
e148f09d | 2528 | *get_local_symbols () = cstk.locals; |
c906108c | 2529 | |
a60f3166 | 2530 | if (get_context_stack_depth () > 1) |
c906108c | 2531 | { |
e31272c3 MK |
2532 | /* This is not the outermost LBRAC...RBRAC pair in the |
2533 | function, its local symbols preceded it, and are the ones | |
2534 | just recovered from the context stack. Define the block | |
2535 | for them (but don't bother if the block contains no | |
2536 | symbols. Should we complain on blocks without symbols? | |
2537 | I can't think of any useful purpose for them). */ | |
e148f09d | 2538 | if (*get_local_symbols () != NULL) |
c906108c | 2539 | { |
e31272c3 MK |
2540 | /* Muzzle a compiler bug that makes end < start. |
2541 | ||
2542 | ??? Which compilers? Is this ever harmful?. */ | |
a60f3166 | 2543 | if (cstk.start_addr > valu) |
c906108c | 2544 | { |
b98664d3 | 2545 | complaint (_("block start larger than block end")); |
a60f3166 | 2546 | cstk.start_addr = valu; |
c906108c SS |
2547 | } |
2548 | /* Make a block for the local symbols within. */ | |
c233e9c6 | 2549 | finish_block (0, cstk.old_blocks, NULL, |
a60f3166 | 2550 | cstk.start_addr, valu); |
c906108c SS |
2551 | } |
2552 | } | |
2553 | else | |
2554 | { | |
2555 | /* This is the outermost LBRAC...RBRAC pair. There is no | |
2556 | need to do anything; leave the symbols that preceded it | |
2557 | to be attached to the function's own block. We need to | |
2558 | indicate that we just moved outside of the function. */ | |
2559 | within_function = 0; | |
2560 | } | |
2561 | ||
c906108c SS |
2562 | break; |
2563 | ||
2564 | case N_FN: | |
2565 | case N_FN_SEQ: | |
e31272c3 MK |
2566 | /* This kind of symbol indicates the start of an object file. |
2567 | Relocate for dynamic loading. */ | |
b8fbeb18 | 2568 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2569 | break; |
2570 | ||
2571 | case N_SO: | |
e31272c3 MK |
2572 | /* This type of symbol indicates the start of data for one |
2573 | source file. Finish the symbol table of the previous source | |
2574 | file (if any) and start accumulating a new symbol table. | |
2575 | Relocate for dynamic loading. */ | |
b8fbeb18 | 2576 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2577 | |
2578 | n_opt_found = 0; | |
2579 | ||
46212e0b | 2580 | if (get_last_source_file ()) |
c906108c SS |
2581 | { |
2582 | /* Check if previous symbol was also an N_SO (with some | |
e31272c3 MK |
2583 | sanity checks). If so, that one was actually the |
2584 | directory name, and the current one is the real file | |
0963b4bd | 2585 | name. Patch things up. */ |
c906108c SS |
2586 | if (previous_stab_code == (unsigned char) N_SO) |
2587 | { | |
3c65e5b3 | 2588 | patch_subfile_names (get_current_subfile (), name); |
0963b4bd | 2589 | break; /* Ignore repeated SOs. */ |
c906108c | 2590 | } |
4d663531 | 2591 | end_symtab (valu, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2592 | end_stabs (); |
2593 | } | |
2594 | ||
e31272c3 MK |
2595 | /* Null name means this just marks the end of text for this .o |
2596 | file. Don't start a new symtab in this case. */ | |
c906108c SS |
2597 | if (*name == '\000') |
2598 | break; | |
2599 | ||
1736a7bd | 2600 | function_start_offset = 0; |
c906108c SS |
2601 | |
2602 | start_stabs (); | |
5ffa0793 | 2603 | start_symtab (objfile, name, NULL, valu, language); |
c906108c SS |
2604 | record_debugformat ("stabs"); |
2605 | break; | |
2606 | ||
2607 | case N_SOL: | |
e31272c3 MK |
2608 | /* This type of symbol indicates the start of data for a |
2609 | sub-source-file, one whose contents were copied or included | |
2610 | in the compilation of the main source file (whose name was | |
2611 | given in the N_SO symbol). Relocate for dynamic loading. */ | |
b8fbeb18 | 2612 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
4d663531 | 2613 | start_subfile (name); |
c906108c SS |
2614 | break; |
2615 | ||
2616 | case N_BINCL: | |
2617 | push_subfile (); | |
2618 | add_new_header_file (name, valu); | |
4d663531 | 2619 | start_subfile (name); |
c906108c SS |
2620 | break; |
2621 | ||
2622 | case N_EINCL: | |
4d663531 | 2623 | start_subfile (pop_subfile ()); |
c906108c SS |
2624 | break; |
2625 | ||
2626 | case N_EXCL: | |
2627 | add_old_header_file (name, valu); | |
2628 | break; | |
2629 | ||
2630 | case N_SLINE: | |
e31272c3 MK |
2631 | /* This type of "symbol" really just records one line-number -- |
2632 | core-address correspondence. Enter it in the line list for | |
2633 | this symbol table. */ | |
c906108c | 2634 | |
e31272c3 MK |
2635 | /* Relocate for dynamic loading and for ELF acc |
2636 | function-relative symbols. */ | |
c906108c SS |
2637 | valu += function_start_offset; |
2638 | ||
ceddaf06 MK |
2639 | /* GCC 2.95.3 emits the first N_SLINE stab somwehere in the |
2640 | middle of the prologue instead of right at the start of the | |
2641 | function. To deal with this we record the address for the | |
2642 | first N_SLINE stab to be the start of the function instead of | |
2643 | the listed location. We really shouldn't to this. When | |
2644 | compiling with optimization, this first N_SLINE stab might be | |
2645 | optimized away. Other (non-GCC) compilers don't emit this | |
2646 | stab at all. There is no real harm in having an extra | |
2647 | numbered line, although it can be a bit annoying for the | |
2648 | user. However, it totally screws up our testsuite. | |
2649 | ||
2650 | So for now, keep adjusting the address of the first N_SLINE | |
2651 | stab, but only for code compiled with GCC. */ | |
2652 | ||
a1b9830c DJ |
2653 | if (within_function && sline_found_in_function == 0) |
2654 | { | |
fbf65064 UW |
2655 | CORE_ADDR addr = processing_gcc_compilation == 2 ? |
2656 | last_function_start : valu; | |
9a619af0 | 2657 | |
3c65e5b3 | 2658 | record_line (get_current_subfile (), desc, |
fbf65064 | 2659 | gdbarch_addr_bits_remove (gdbarch, addr)); |
a1b9830c DJ |
2660 | sline_found_in_function = 1; |
2661 | } | |
2662 | else | |
3c65e5b3 | 2663 | record_line (get_current_subfile (), desc, |
fbf65064 | 2664 | gdbarch_addr_bits_remove (gdbarch, valu)); |
c906108c SS |
2665 | break; |
2666 | ||
2667 | case N_BCOMM: | |
2668 | common_block_start (name, objfile); | |
2669 | break; | |
2670 | ||
2671 | case N_ECOMM: | |
2672 | common_block_end (objfile); | |
2673 | break; | |
2674 | ||
e31272c3 MK |
2675 | /* The following symbol types need to have the appropriate |
2676 | offset added to their value; then we process symbol | |
2677 | definitions in the name. */ | |
c906108c | 2678 | |
e31272c3 MK |
2679 | case N_STSYM: /* Static symbol in data segment. */ |
2680 | case N_LCSYM: /* Static symbol in BSS segment. */ | |
2681 | case N_ROSYM: /* Static symbol in read-only data segment. */ | |
c5aa993b | 2682 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
e31272c3 MK |
2683 | Solaris 2's stabs-in-elf makes *most* symbols relative but |
2684 | leaves a few absolute (at least for Solaris 2.1 and version | |
2685 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on | |
2686 | the fence. .stab "foo:S...",N_STSYM is absolute (ld | |
2687 | relocates it) .stab "foo:V...",N_STSYM is relative (section | |
2688 | base subtracted). This leaves us no choice but to search for | |
2689 | the 'S' or 'V'... (or pass the whole section_offsets stuff | |
2690 | down ONE MORE function call level, which we really don't want | |
2691 | to do). */ | |
c906108c | 2692 | { |
a121b7c1 | 2693 | const char *p; |
c906108c | 2694 | |
e31272c3 MK |
2695 | /* Normal object file and NLMs have non-zero text seg offsets, |
2696 | but don't need their static syms offset in this fashion. | |
2697 | XXX - This is really a crock that should be fixed in the | |
2698 | solib handling code so that I don't have to work around it | |
2699 | here. */ | |
c906108c SS |
2700 | |
2701 | if (!symfile_relocatable) | |
2702 | { | |
2703 | p = strchr (name, ':'); | |
2704 | if (p != 0 && p[1] == 'S') | |
2705 | { | |
18a94d75 DE |
2706 | /* The linker relocated it. We don't want to add a |
2707 | Sun-stabs Tfoo.foo-like offset, but we *do* | |
e31272c3 MK |
2708 | want to add whatever solib.c passed to |
2709 | symbol_file_add as addr (this is known to affect | |
18a94d75 DE |
2710 | SunOS 4, and I suspect ELF too). Since there is no |
2711 | Ttext.text symbol, we can get addr from the text offset. */ | |
b8fbeb18 | 2712 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2713 | goto define_a_symbol; |
2714 | } | |
2715 | } | |
e31272c3 MK |
2716 | /* Since it's not the kludge case, re-dispatch to the right |
2717 | handler. */ | |
c5aa993b JM |
2718 | switch (type) |
2719 | { | |
2720 | case N_STSYM: | |
2721 | goto case_N_STSYM; | |
2722 | case N_LCSYM: | |
2723 | goto case_N_LCSYM; | |
2724 | case N_ROSYM: | |
2725 | goto case_N_ROSYM; | |
2726 | default: | |
e31272c3 | 2727 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2728 | _("failed internal consistency check")); |
c5aa993b | 2729 | } |
c906108c SS |
2730 | } |
2731 | ||
e31272c3 MK |
2732 | case_N_STSYM: /* Static symbol in data segment. */ |
2733 | case N_DSLINE: /* Source line number, data segment. */ | |
b8fbeb18 | 2734 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile)); |
c906108c SS |
2735 | goto define_a_symbol; |
2736 | ||
e31272c3 MK |
2737 | case_N_LCSYM: /* Static symbol in BSS segment. */ |
2738 | case N_BSLINE: /* Source line number, BSS segment. */ | |
2739 | /* N_BROWS: overlaps with N_BSLINE. */ | |
b8fbeb18 | 2740 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile)); |
c906108c SS |
2741 | goto define_a_symbol; |
2742 | ||
e31272c3 | 2743 | case_N_ROSYM: /* Static symbol in read-only data segment. */ |
b8fbeb18 | 2744 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA (objfile)); |
c906108c SS |
2745 | goto define_a_symbol; |
2746 | ||
e31272c3 MK |
2747 | case N_ENTRY: /* Alternate entry point. */ |
2748 | /* Relocate for dynamic loading. */ | |
b8fbeb18 | 2749 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2750 | goto define_a_symbol; |
2751 | ||
e31272c3 MK |
2752 | /* The following symbol types we don't know how to process. |
2753 | Handle them in a "default" way, but complain to people who | |
2754 | care. */ | |
c906108c | 2755 | default: |
e31272c3 MK |
2756 | case N_CATCH: /* Exception handler catcher. */ |
2757 | case N_EHDECL: /* Exception handler name. */ | |
2758 | case N_PC: /* Global symbol in Pascal. */ | |
2759 | case N_M2C: /* Modula-2 compilation unit. */ | |
2760 | /* N_MOD2: overlaps with N_EHDECL. */ | |
2761 | case N_SCOPE: /* Modula-2 scope information. */ | |
2762 | case N_ECOML: /* End common (local name). */ | |
2763 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
c906108c SS |
2764 | case N_NBDATA: |
2765 | case N_NBBSS: | |
2766 | case N_NBSTS: | |
2767 | case N_NBLCS: | |
bb599908 | 2768 | unknown_symtype_complaint (hex_string (type)); |
c906108c SS |
2769 | /* FALLTHROUGH */ |
2770 | ||
c906108c | 2771 | define_a_symbol: |
86a73007 TT |
2772 | /* These symbol types don't need the address field relocated, |
2773 | since it is either unused, or is absolute. */ | |
e31272c3 MK |
2774 | case N_GSYM: /* Global variable. */ |
2775 | case N_NSYMS: /* Number of symbols (Ultrix). */ | |
2776 | case N_NOMAP: /* No map? (Ultrix). */ | |
2777 | case N_RSYM: /* Register variable. */ | |
2778 | case N_DEFD: /* Modula-2 GNU module dependency. */ | |
2779 | case N_SSYM: /* Struct or union element. */ | |
2780 | case N_LSYM: /* Local symbol in stack. */ | |
2781 | case N_PSYM: /* Parameter variable. */ | |
2782 | case N_LENG: /* Length of preceding symbol type. */ | |
c906108c SS |
2783 | if (name) |
2784 | { | |
2785 | int deftype; | |
a121b7c1 | 2786 | const char *colon_pos = strchr (name, ':'); |
9a619af0 | 2787 | |
c906108c SS |
2788 | if (colon_pos == NULL) |
2789 | deftype = '\0'; | |
2790 | else | |
2791 | deftype = colon_pos[1]; | |
2792 | ||
2793 | switch (deftype) | |
2794 | { | |
2795 | case 'f': | |
2796 | case 'F': | |
e31272c3 MK |
2797 | /* Deal with the SunPRO 3.0 compiler which omits the |
2798 | address from N_FUN symbols. */ | |
c906108c | 2799 | if (type == N_FUN |
e31272c3 | 2800 | && valu == ANOFFSET (section_offsets, |
203c3895 | 2801 | SECT_OFF_TEXT (objfile)) |
5e2b427d | 2802 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9a058a09 | 2803 | { |
79748972 TT |
2804 | struct bound_minimal_symbol minsym |
2805 | = find_stab_function (name, get_last_source_file (), | |
2806 | objfile); | |
2807 | if (minsym.minsym != NULL) | |
2808 | valu = BMSYMBOL_VALUE_ADDRESS (minsym); | |
9a058a09 | 2809 | } |
c906108c | 2810 | |
1736a7bd PA |
2811 | /* These addresses are absolute. */ |
2812 | function_start_offset = valu; | |
c906108c SS |
2813 | |
2814 | within_function = 1; | |
c3f6f71d | 2815 | |
a60f3166 | 2816 | if (get_context_stack_depth () > 1) |
c3f6f71d | 2817 | { |
b98664d3 | 2818 | complaint (_("unmatched N_LBRAC before symtab pos %d"), |
063e58ba | 2819 | symnum); |
c3f6f71d JM |
2820 | break; |
2821 | } | |
2822 | ||
edb0470b | 2823 | if (!outermost_context_p ()) |
c906108c | 2824 | { |
df8a16a1 DJ |
2825 | struct block *block; |
2826 | ||
a60f3166 | 2827 | cstk = pop_context (); |
c906108c | 2828 | /* Make a block for the local symbols within. */ |
c233e9c6 | 2829 | block = finish_block (cstk.name, |
a60f3166 TT |
2830 | cstk.old_blocks, NULL, |
2831 | cstk.start_addr, valu); | |
df8a16a1 DJ |
2832 | |
2833 | /* For C++, set the block's scope. */ | |
a60f3166 TT |
2834 | if (SYMBOL_LANGUAGE (cstk.name) == language_cplus) |
2835 | cp_set_block_scope (cstk.name, block, | |
195a3f6c | 2836 | &objfile->objfile_obstack); |
c906108c | 2837 | } |
c906108c | 2838 | |
fe978cb0 PA |
2839 | newobj = push_context (0, valu); |
2840 | newobj->name = define_symbol (valu, name, desc, type, objfile); | |
c906108c SS |
2841 | break; |
2842 | ||
2843 | default: | |
2844 | define_symbol (valu, name, desc, type, objfile); | |
2845 | break; | |
2846 | } | |
2847 | } | |
2848 | break; | |
2849 | ||
c5aa993b JM |
2850 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
2851 | for a bunch of other flags, too. Someday we may parse their | |
2852 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
e31272c3 | 2853 | case N_OPT: /* Solaris 2: Compiler options. */ |
c906108c SS |
2854 | if (name) |
2855 | { | |
6314a349 | 2856 | if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2857 | { |
2858 | processing_gcc_compilation = 2; | |
c906108c SS |
2859 | } |
2860 | else | |
2861 | n_opt_found = 1; | |
2862 | } | |
2863 | break; | |
2864 | ||
51cc5b07 AC |
2865 | case N_MAIN: /* Name of main routine. */ |
2866 | /* FIXME: If one has a symbol file with N_MAIN and then replaces | |
2867 | it with a symbol file with "main" and without N_MAIN. I'm | |
2868 | not sure exactly what rule to follow but probably something | |
2869 | like: N_MAIN takes precedence over "main" no matter what | |
2870 | objfile it is in; If there is more than one N_MAIN, choose | |
2871 | the one in the symfile_objfile; If there is more than one | |
2872 | N_MAIN within a given objfile, complain() and choose | |
0963b4bd | 2873 | arbitrarily. (kingdon) */ |
51cc5b07 | 2874 | if (name != NULL) |
3d548a53 | 2875 | set_objfile_main_name (objfile, name, language_unknown); |
51cc5b07 AC |
2876 | break; |
2877 | ||
c5aa993b | 2878 | /* The following symbol types can be ignored. */ |
e31272c3 MK |
2879 | case N_OBJ: /* Solaris 2: Object file dir and name. */ |
2880 | case N_PATCH: /* Solaris 2: Patch Run Time Checker. */ | |
2881 | /* N_UNDF: Solaris 2: File separator mark. */ | |
2882 | /* N_UNDF: -- we will never encounter it, since we only process | |
2883 | one file's symbols at once. */ | |
2884 | case N_ENDM: /* Solaris 2: End of module. */ | |
c906108c SS |
2885 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
2886 | break; | |
2887 | } | |
2888 | ||
2889 | /* '#' is a GNU C extension to allow one symbol to refer to another | |
2890 | related symbol. | |
2891 | ||
2892 | Generally this is used so that an alias can refer to its main | |
c5aa993b | 2893 | symbol. */ |
13f6513c | 2894 | gdb_assert (name); |
c906108c SS |
2895 | if (name[0] == '#') |
2896 | { | |
e31272c3 MK |
2897 | /* Initialize symbol reference names and determine if this is a |
2898 | definition. If a symbol reference is being defined, go ahead | |
2899 | and add it. Otherwise, just return. */ | |
c906108c | 2900 | |
a121b7c1 | 2901 | const char *s = name; |
c906108c SS |
2902 | int refnum; |
2903 | ||
2904 | /* If this stab defines a new reference ID that is not on the | |
c5aa993b | 2905 | reference list, then put it on the reference list. |
c906108c | 2906 | |
c5aa993b JM |
2907 | We go ahead and advance NAME past the reference, even though |
2908 | it is not strictly necessary at this time. */ | |
c906108c SS |
2909 | refnum = symbol_reference_defined (&s); |
2910 | if (refnum >= 0) | |
2911 | if (!ref_search (refnum)) | |
2912 | ref_add (refnum, 0, name, valu); | |
2913 | name = s; | |
2914 | } | |
2915 | ||
c906108c SS |
2916 | previous_stab_code = type; |
2917 | } | |
2918 | \f | |
2919 | /* FIXME: The only difference between this and elfstab_build_psymtabs | |
2920 | is the call to install_minimal_symbols for elf, and the support for | |
2921 | split sections. If the differences are really that small, the code | |
2922 | should be shared. */ | |
2923 | ||
2924 | /* Scan and build partial symbols for an coff symbol file. | |
2925 | The coff file has already been processed to get its minimal symbols. | |
2926 | ||
2927 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2928 | rolled into one. | |
2929 | ||
2930 | OBJFILE is the object file we are reading symbols from. | |
2931 | ADDR is the address relative to which the symbols are (e.g. | |
2932 | the base address of the text segment). | |
c906108c SS |
2933 | TEXTADDR is the address of the text section. |
2934 | TEXTSIZE is the size of the text section. | |
2935 | STABSECTS is the list of .stab sections in OBJFILE. | |
2936 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
2937 | .stabstr section exists. | |
2938 | ||
2939 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 2940 | adjusted for coff details. */ |
c906108c SS |
2941 | |
2942 | void | |
c67a9c90 | 2943 | coffstab_build_psymtabs (struct objfile *objfile, |
fba45db2 KB |
2944 | CORE_ADDR textaddr, unsigned int textsize, |
2945 | struct stab_section_list *stabsects, | |
2946 | file_ptr stabstroffset, unsigned int stabstrsize) | |
c906108c SS |
2947 | { |
2948 | int val; | |
2949 | bfd *sym_bfd = objfile->obfd; | |
2950 | char *name = bfd_get_filename (sym_bfd); | |
c906108c SS |
2951 | unsigned int stabsize; |
2952 | ||
c906108c SS |
2953 | DBX_TEXT_ADDR (objfile) = textaddr; |
2954 | DBX_TEXT_SIZE (objfile) = textsize; | |
2955 | ||
2956 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 2957 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; |
c906108c | 2958 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
c5aa993b | 2959 | |
c906108c | 2960 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 2961 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 2962 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 2963 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 2964 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
2965 | |
2966 | /* Now read in the string table in one big gulp. */ | |
2967 | ||
2968 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
2969 | if (val < 0) | |
2970 | perror_with_name (name); | |
3a42e9d0 | 2971 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
2972 | if (val != stabstrsize) |
2973 | perror_with_name (name); | |
2974 | ||
2975 | stabsread_new_init (); | |
c906108c SS |
2976 | free_header_files (); |
2977 | init_header_files (); | |
2978 | ||
2979 | processing_acc_compilation = 1; | |
2980 | ||
2981 | /* In a coff file, we've already installed the minimal symbols that came | |
2982 | from the coff (non-stab) symbol table, so always act like an | |
0963b4bd | 2983 | incremental load here. */ |
c906108c SS |
2984 | if (stabsects->next == NULL) |
2985 | { | |
2986 | stabsize = bfd_section_size (sym_bfd, stabsects->section); | |
2987 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); | |
2988 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
2989 | } | |
2990 | else | |
2991 | { | |
2992 | struct stab_section_list *stabsect; | |
2993 | ||
2994 | DBX_SYMCOUNT (objfile) = 0; | |
2995 | for (stabsect = stabsects; stabsect != NULL; stabsect = stabsect->next) | |
2996 | { | |
2997 | stabsize = bfd_section_size (sym_bfd, stabsect->section); | |
2998 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); | |
2999 | } | |
3000 | ||
3001 | DBX_SYMTAB_OFFSET (objfile) = stabsects->section->filepos; | |
3002 | ||
3003 | symbuf_sections = stabsects->next; | |
3004 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section); | |
3005 | symbuf_read = 0; | |
3006 | } | |
3007 | ||
96baa820 | 3008 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3009 | } |
3010 | \f | |
3011 | /* Scan and build partial symbols for an ELF symbol file. | |
fea25152 | 3012 | This ELF file has already been processed to get its minimal symbols. |
c906108c SS |
3013 | |
3014 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3015 | rolled into one. | |
3016 | ||
3017 | OBJFILE is the object file we are reading symbols from. | |
3018 | ADDR is the address relative to which the symbols are (e.g. | |
3019 | the base address of the text segment). | |
086df311 | 3020 | STABSECT is the BFD section information for the .stab section. |
c906108c SS |
3021 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
3022 | .stabstr section exists. | |
3023 | ||
3024 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 3025 | adjusted for elf details. */ |
c906108c SS |
3026 | |
3027 | void | |
c67a9c90 | 3028 | elfstab_build_psymtabs (struct objfile *objfile, asection *stabsect, |
fba45db2 | 3029 | file_ptr stabstroffset, unsigned int stabstrsize) |
c906108c SS |
3030 | { |
3031 | int val; | |
3032 | bfd *sym_bfd = objfile->obfd; | |
3033 | char *name = bfd_get_filename (sym_bfd); | |
c906108c | 3034 | |
7a292a7a SS |
3035 | /* Find the first and last text address. dbx_symfile_read seems to |
3036 | want this. */ | |
3037 | find_text_range (sym_bfd, objfile); | |
c906108c SS |
3038 | |
3039 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3040 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; |
086df311 DJ |
3041 | DBX_SYMCOUNT (objfile) |
3042 | = bfd_section_size (objfile->obfd, stabsect) / DBX_SYMBOL_SIZE (objfile); | |
c906108c | 3043 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
086df311 DJ |
3044 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; |
3045 | DBX_STAB_SECTION (objfile) = stabsect; | |
c5aa993b | 3046 | |
c906108c | 3047 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3048 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3049 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3050 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3051 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3052 | |
3053 | /* Now read in the string table in one big gulp. */ | |
3054 | ||
3055 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3056 | if (val < 0) | |
3057 | perror_with_name (name); | |
3a42e9d0 | 3058 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3059 | if (val != stabstrsize) |
3060 | perror_with_name (name); | |
3061 | ||
3062 | stabsread_new_init (); | |
c906108c SS |
3063 | free_header_files (); |
3064 | init_header_files (); | |
c906108c SS |
3065 | |
3066 | processing_acc_compilation = 1; | |
3067 | ||
086df311 DJ |
3068 | symbuf_read = 0; |
3069 | symbuf_left = bfd_section_size (objfile->obfd, stabsect); | |
bf259e25 TT |
3070 | |
3071 | scoped_restore restore_stabs_data = make_scoped_restore (&stabs_data); | |
3072 | gdb::unique_xmalloc_ptr<gdb_byte> data_holder; | |
3073 | ||
ac8035ab | 3074 | stabs_data = symfile_relocate_debug_section (objfile, stabsect, NULL); |
086df311 | 3075 | if (stabs_data) |
bf259e25 | 3076 | data_holder.reset (stabs_data); |
086df311 | 3077 | |
c906108c SS |
3078 | /* In an elf file, we've already installed the minimal symbols that came |
3079 | from the elf (non-stab) symbol table, so always act like an | |
7134143f DJ |
3080 | incremental load here. dbx_symfile_read should not generate any new |
3081 | minimal symbols, since we will have already read the ELF dynamic symbol | |
3082 | table and normal symbol entries won't be in the ".stab" section; but in | |
3083 | case it does, it will install them itself. */ | |
96baa820 | 3084 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3085 | } |
3086 | \f | |
3087 | /* Scan and build partial symbols for a file with special sections for stabs | |
3088 | and stabstrings. The file has already been processed to get its minimal | |
3089 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
3090 | ||
3091 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3092 | rolled into one. | |
3093 | ||
3094 | OBJFILE is the object file we are reading symbols from. | |
3095 | ADDR is the address relative to which the symbols are (e.g. the base address | |
c5aa993b | 3096 | of the text segment). |
c906108c SS |
3097 | STAB_NAME is the name of the section that contains the stabs. |
3098 | STABSTR_NAME is the name of the section that contains the stab strings. | |
3099 | ||
0963b4bd MS |
3100 | This routine is mostly copied from dbx_symfile_init and |
3101 | dbx_symfile_read. */ | |
c906108c SS |
3102 | |
3103 | void | |
c67a9c90 | 3104 | stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, |
fba45db2 | 3105 | char *stabstr_name, char *text_name) |
c906108c SS |
3106 | { |
3107 | int val; | |
3108 | bfd *sym_bfd = objfile->obfd; | |
3109 | char *name = bfd_get_filename (sym_bfd); | |
3110 | asection *stabsect; | |
3111 | asection *stabstrsect; | |
3112 | asection *text_sect; | |
d2f4b8fe | 3113 | struct dbx_symfile_info *dbx; |
c906108c SS |
3114 | |
3115 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
3116 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
3117 | ||
3118 | if (!stabsect) | |
3119 | return; | |
3120 | ||
3121 | if (!stabstrsect) | |
0963b4bd MS |
3122 | error (_("stabsect_build_psymtabs: Found stabs (%s), " |
3123 | "but not string section (%s)"), | |
c906108c SS |
3124 | stab_name, stabstr_name); |
3125 | ||
d2f4b8fe TT |
3126 | dbx = XCNEW (struct dbx_symfile_info); |
3127 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c SS |
3128 | |
3129 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); | |
3130 | if (!text_sect) | |
8a3fe4f8 | 3131 | error (_("Can't find %s section in symbol file"), text_name); |
c906108c SS |
3132 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (sym_bfd, text_sect); |
3133 | DBX_TEXT_SIZE (objfile) = bfd_section_size (sym_bfd, text_sect); | |
3134 | ||
c5aa993b JM |
3135 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); |
3136 | DBX_SYMCOUNT (objfile) = bfd_section_size (sym_bfd, stabsect) | |
c906108c SS |
3137 | / DBX_SYMBOL_SIZE (objfile); |
3138 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (sym_bfd, stabstrsect); | |
3e43a32a MS |
3139 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING |
3140 | INSIDE BFD DATA | |
3141 | STRUCTURES */ | |
c5aa993b | 3142 | |
c906108c | 3143 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) |
063e58ba MD |
3144 | error (_("ridiculous string table size: %d bytes"), |
3145 | DBX_STRINGTAB_SIZE (objfile)); | |
c906108c | 3146 | DBX_STRINGTAB (objfile) = (char *) |
3e43a32a MS |
3147 | obstack_alloc (&objfile->objfile_obstack, |
3148 | DBX_STRINGTAB_SIZE (objfile) + 1); | |
c906108c SS |
3149 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); |
3150 | ||
3151 | /* Now read in the string table in one big gulp. */ | |
3152 | ||
c5aa993b JM |
3153 | val = bfd_get_section_contents (sym_bfd, /* bfd */ |
3154 | stabstrsect, /* bfd section */ | |
063e58ba | 3155 | DBX_STRINGTAB (objfile), /* input buffer */ |
3e43a32a MS |
3156 | 0, /* offset into section */ |
3157 | DBX_STRINGTAB_SIZE (objfile)); /* amount to | |
3158 | read */ | |
c906108c SS |
3159 | |
3160 | if (!val) | |
3161 | perror_with_name (name); | |
3162 | ||
3163 | stabsread_new_init (); | |
c906108c SS |
3164 | free_header_files (); |
3165 | init_header_files (); | |
c906108c | 3166 | |
0963b4bd | 3167 | /* Now, do an incremental load. */ |
c906108c SS |
3168 | |
3169 | processing_acc_compilation = 1; | |
96baa820 | 3170 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3171 | } |
3172 | \f | |
00b5771c | 3173 | static const struct sym_fns aout_sym_fns = |
c906108c | 3174 | { |
0963b4bd MS |
3175 | dbx_new_init, /* init anything gbl to entire symtab */ |
3176 | dbx_symfile_init, /* read initial info, setup for sym_read() */ | |
3177 | dbx_symfile_read, /* read a symbol file into symtab */ | |
b11896a5 | 3178 | NULL, /* sym_read_psymbols */ |
0963b4bd MS |
3179 | dbx_symfile_finish, /* finished with file, cleanup */ |
3180 | default_symfile_offsets, /* parse user's offsets to internal form */ | |
3181 | default_symfile_segments, /* Get segment information from a file. */ | |
3182 | NULL, | |
3183 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3184 | NULL, /* sym_probe_fns */ |
00b5771c | 3185 | &psym_functions |
c906108c SS |
3186 | }; |
3187 | ||
3188 | void | |
fba45db2 | 3189 | _initialize_dbxread (void) |
c906108c | 3190 | { |
c256e171 | 3191 | add_symtab_fns (bfd_target_aout_flavour, &aout_sym_fns); |
d2f4b8fe TT |
3192 | |
3193 | dbx_objfile_data_key | |
3194 | = register_objfile_data_with_cleanup (NULL, dbx_free_symfile_info); | |
c906108c | 3195 | } |