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c906108c | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
213516ef | 2 | Copyright (C) 1986-2023 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" | |
c906108c | 34 | |
bf31fd38 | 35 | #include "gdbsupport/gdb_obstack.h" |
53ce3c39 | 36 | #include <sys/stat.h> |
c906108c SS |
37 | #include "symtab.h" |
38 | #include "breakpoint.h" | |
c906108c SS |
39 | #include "target.h" |
40 | #include "gdbcore.h" /* for bfd stuff */ | |
c5aa993b | 41 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
0ba1096a | 42 | #include "filenames.h" |
c906108c | 43 | #include "objfiles.h" |
0baae8db | 44 | #include "buildsym-legacy.h" |
c906108c SS |
45 | #include "stabsread.h" |
46 | #include "gdb-stabs.h" | |
47 | #include "demangle.h" | |
c906108c | 48 | #include "complaints.h" |
015a42b4 | 49 | #include "cp-abi.h" |
df8a16a1 | 50 | #include "cp-support.h" |
55fc1623 | 51 | #include "c-lang.h" |
ccefe4c4 | 52 | #include "psympriv.h" |
195a3f6c | 53 | #include "block.h" |
c906108c | 54 | #include "aout/aout64.h" |
0963b4bd MS |
55 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not |
56 | native, now. */ | |
c906108c | 57 | \f |
c5aa993b | 58 | |
d2f4b8fe TT |
59 | /* Key for dbx-associated data. */ |
60 | ||
08b8a139 | 61 | const registry<objfile>::key<dbx_symfile_info> dbx_objfile_data_key; |
d2f4b8fe | 62 | |
c906108c SS |
63 | /* We put a pointer to this structure in the read_symtab_private field |
64 | of the psymtab. */ | |
65 | ||
c5aa993b JM |
66 | struct symloc |
67 | { | |
c5aa993b JM |
68 | /* Offset within the file symbol table of first local symbol for this |
69 | file. */ | |
c906108c | 70 | |
c5aa993b | 71 | int ldsymoff; |
c906108c | 72 | |
c5aa993b JM |
73 | /* Length (in bytes) of the section of the symbol table devoted to |
74 | this file's symbols (actually, the section bracketed may contain | |
75 | more than just this file's symbols). If ldsymlen is 0, the only | |
76 | reason for this thing's existence is the dependency list. Nothing | |
77 | else will happen when it is read in. */ | |
c906108c | 78 | |
c5aa993b | 79 | int ldsymlen; |
c906108c | 80 | |
c5aa993b | 81 | /* The size of each symbol in the symbol file (in external form). */ |
c906108c | 82 | |
c5aa993b | 83 | int symbol_size; |
c906108c | 84 | |
c5aa993b JM |
85 | /* Further information needed to locate the symbols if they are in |
86 | an ELF file. */ | |
c906108c | 87 | |
c5aa993b JM |
88 | int symbol_offset; |
89 | int string_offset; | |
90 | int file_string_offset; | |
5ffa0793 | 91 | enum language pst_language; |
c5aa993b | 92 | }; |
c906108c SS |
93 | |
94 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) | |
95 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
96 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) | |
97 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
98 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
99 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
100 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
5ffa0793 | 101 | #define PST_LANGUAGE(p) (SYMLOC(p)->pst_language) |
c906108c | 102 | \f |
c5aa993b | 103 | |
91a81f69 TT |
104 | /* The objfile we are currently reading. */ |
105 | ||
dd707e8e | 106 | static struct objfile *dbxread_objfile; |
91a81f69 | 107 | |
0963b4bd | 108 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
109 | |
110 | static enum language psymtab_language = language_unknown; | |
111 | ||
c906108c SS |
112 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
113 | ||
114 | static bfd *symfile_bfd; | |
115 | ||
116 | /* The size of each symbol in the symbol file (in external form). | |
117 | This is set by dbx_symfile_read when building psymtabs, and by | |
118 | dbx_psymtab_to_symtab when building symtabs. */ | |
119 | ||
120 | static unsigned symbol_size; | |
121 | ||
0963b4bd | 122 | /* This is the offset of the symbol table in the executable file. */ |
c906108c SS |
123 | |
124 | static unsigned symbol_table_offset; | |
125 | ||
0963b4bd | 126 | /* This is the offset of the string table in the executable file. */ |
c906108c SS |
127 | |
128 | static unsigned string_table_offset; | |
129 | ||
130 | /* For elf+stab executables, the n_strx field is not a simple index | |
131 | into the string table. Instead, each .o file has a base offset in | |
132 | the string table, and the associated symbols contain offsets from | |
133 | this base. The following two variables contain the base offset for | |
0963b4bd | 134 | the current and next .o files. */ |
c906108c SS |
135 | |
136 | static unsigned int file_string_table_offset; | |
137 | static unsigned int next_file_string_table_offset; | |
138 | ||
139 | /* .o and NLM files contain unrelocated addresses which are based at | |
140 | 0. When non-zero, this flag disables some of the special cases for | |
0963b4bd | 141 | Solaris elf+stab text addresses at location 0. */ |
c906108c SS |
142 | |
143 | static int symfile_relocatable = 0; | |
144 | ||
81cc346d TT |
145 | /* When set, we are processing a .o file compiled by sun acc. This is |
146 | misnamed; it refers to all stabs-in-elf implementations which use | |
147 | N_UNDF the way Sun does, including Solaris gcc. Hopefully all | |
148 | stabs-in-elf implementations ever invented will choose to be | |
149 | compatible. */ | |
150 | ||
151 | static unsigned char processing_acc_compilation; | |
152 | ||
c906108c SS |
153 | \f |
154 | /* The lowest text address we have yet encountered. This is needed | |
155 | because in an a.out file, there is no header field which tells us | |
156 | what address the program is actually going to be loaded at, so we | |
157 | need to make guesses based on the symbols (which *are* relocated to | |
158 | reflect the address it will be loaded at). */ | |
159 | ||
9675da25 | 160 | static unrelocated_addr lowest_text_address; |
c906108c SS |
161 | |
162 | /* Non-zero if there is any line number info in the objfile. Prevents | |
8763cede | 163 | dbx_end_psymtab from discarding an otherwise empty psymtab. */ |
c906108c SS |
164 | |
165 | static int has_line_numbers; | |
166 | ||
167 | /* Complaints about the symbols we have encountered. */ | |
168 | ||
23136709 KB |
169 | static void |
170 | unknown_symtype_complaint (const char *arg1) | |
171 | { | |
b98664d3 | 172 | complaint (_("unknown symbol type %s"), arg1); |
23136709 | 173 | } |
c906108c | 174 | |
23136709 KB |
175 | static void |
176 | lbrac_mismatch_complaint (int arg1) | |
177 | { | |
b98664d3 | 178 | complaint (_("N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d"), arg1); |
23136709 | 179 | } |
c906108c | 180 | |
23136709 KB |
181 | static void |
182 | repeated_header_complaint (const char *arg1, int arg2) | |
183 | { | |
b98664d3 | 184 | complaint (_("\"repeated\" header file %s not " |
3e43a32a | 185 | "previously seen, at symtab pos %d"), |
23136709 KB |
186 | arg1, arg2); |
187 | } | |
1f077a3e | 188 | |
7a292a7a SS |
189 | /* find_text_range --- find start and end of loadable code sections |
190 | ||
191 | The find_text_range function finds the shortest address range that | |
192 | encloses all sections containing executable code, and stores it in | |
193 | objfile's text_addr and text_size members. | |
194 | ||
195 | dbx_symfile_read will use this to finish off the partial symbol | |
196 | table, in some cases. */ | |
197 | ||
198 | static void | |
c5aa993b | 199 | find_text_range (bfd * sym_bfd, struct objfile *objfile) |
7a292a7a SS |
200 | { |
201 | asection *sec; | |
202 | int found_any = 0; | |
b9179dbc EZ |
203 | CORE_ADDR start = 0; |
204 | CORE_ADDR end = 0; | |
c5aa993b | 205 | |
7a292a7a | 206 | for (sec = sym_bfd->sections; sec; sec = sec->next) |
fd361982 | 207 | if (bfd_section_flags (sec) & SEC_CODE) |
7a292a7a | 208 | { |
fd361982 AM |
209 | CORE_ADDR sec_start = bfd_section_vma (sec); |
210 | CORE_ADDR sec_end = sec_start + bfd_section_size (sec); | |
7a292a7a SS |
211 | |
212 | if (found_any) | |
213 | { | |
c5aa993b JM |
214 | if (sec_start < start) |
215 | start = sec_start; | |
216 | if (sec_end > end) | |
217 | end = sec_end; | |
7a292a7a SS |
218 | } |
219 | else | |
220 | { | |
221 | start = sec_start; | |
222 | end = sec_end; | |
223 | } | |
224 | ||
225 | found_any = 1; | |
226 | } | |
227 | ||
c5aa993b | 228 | if (!found_any) |
8a3fe4f8 | 229 | error (_("Can't find any code sections in symbol file")); |
7a292a7a SS |
230 | |
231 | DBX_TEXT_ADDR (objfile) = start; | |
232 | DBX_TEXT_SIZE (objfile) = end - start; | |
233 | } | |
c5aa993b | 234 | \f |
7a292a7a SS |
235 | |
236 | ||
c906108c SS |
237 | /* During initial symbol readin, we need to have a structure to keep |
238 | track of which psymtabs have which bincls in them. This structure | |
239 | is used during readin to setup the list of dependencies within each | |
0963b4bd | 240 | partial symbol table. */ |
c906108c SS |
241 | |
242 | struct header_file_location | |
243 | { | |
bf259e25 | 244 | header_file_location (const char *name_, int instance_, |
891813be | 245 | legacy_psymtab *pst_) |
bf259e25 TT |
246 | : name (name_), |
247 | instance (instance_), | |
248 | pst (pst_) | |
249 | { | |
250 | } | |
251 | ||
a121b7c1 | 252 | const char *name; /* Name of header file */ |
c906108c | 253 | int instance; /* See above */ |
891813be | 254 | legacy_psymtab *pst; /* Partial symtab that has the |
0963b4bd | 255 | BINCL/EINCL defs for this file. */ |
c906108c SS |
256 | }; |
257 | ||
bf259e25 TT |
258 | /* The list of bincls. */ |
259 | static std::vector<struct header_file_location> *bincl_list; | |
c906108c | 260 | |
0963b4bd | 261 | /* Local function prototypes. */ |
c906108c | 262 | |
891813be | 263 | static void read_ofile_symtab (struct objfile *, legacy_psymtab *); |
c906108c | 264 | |
891813be | 265 | static void dbx_read_symtab (legacy_psymtab *self, |
257e7a09 | 266 | struct objfile *objfile); |
c906108c | 267 | |
69b037c3 | 268 | static void dbx_expand_psymtab (legacy_psymtab *, struct objfile *); |
c906108c | 269 | |
7e9c0476 TT |
270 | static void read_dbx_symtab (minimal_symbol_reader &, psymtab_storage *, |
271 | struct objfile *); | |
c906108c | 272 | |
891813be | 273 | static legacy_psymtab *find_corresponding_bincl_psymtab (const char *, |
a121b7c1 | 274 | int); |
c906108c | 275 | |
a121b7c1 | 276 | static const char *dbx_next_symbol_text (struct objfile *); |
c906108c | 277 | |
a14ed312 | 278 | static void fill_symbuf (bfd *); |
c906108c | 279 | |
a14ed312 | 280 | static void dbx_symfile_init (struct objfile *); |
c906108c | 281 | |
a14ed312 | 282 | static void dbx_new_init (struct objfile *); |
c906108c | 283 | |
b15cc25c | 284 | static void dbx_symfile_read (struct objfile *, symfile_add_flags); |
c906108c | 285 | |
a14ed312 | 286 | static void dbx_symfile_finish (struct objfile *); |
c906108c | 287 | |
8dddcb8f | 288 | static void record_minimal_symbol (minimal_symbol_reader &, |
9675da25 | 289 | const char *, unrelocated_addr, int, |
bec71544 | 290 | struct objfile *); |
c906108c | 291 | |
a121b7c1 | 292 | static void add_new_header_file (const char *, int); |
c906108c | 293 | |
a121b7c1 | 294 | static void add_old_header_file (const char *, int); |
c906108c | 295 | |
a14ed312 | 296 | static void add_this_object_header_file (int); |
c906108c | 297 | |
7b249e47 | 298 | static legacy_psymtab *start_psymtab (psymtab_storage *, struct objfile *, |
584d0cda | 299 | const char *, unrelocated_addr, int); |
d4f3574e | 300 | |
0963b4bd | 301 | /* Free up old header file tables. */ |
c906108c | 302 | |
d3d55eeb | 303 | void |
fba45db2 | 304 | free_header_files (void) |
c906108c SS |
305 | { |
306 | if (this_object_header_files) | |
307 | { | |
b8c9b27d | 308 | xfree (this_object_header_files); |
c906108c SS |
309 | this_object_header_files = NULL; |
310 | } | |
311 | n_allocated_this_object_header_files = 0; | |
312 | } | |
313 | ||
0963b4bd | 314 | /* Allocate new header file tables. */ |
c906108c | 315 | |
d3d55eeb | 316 | void |
fba45db2 | 317 | init_header_files (void) |
c906108c SS |
318 | { |
319 | n_allocated_this_object_header_files = 10; | |
8d749320 | 320 | this_object_header_files = XNEWVEC (int, 10); |
c906108c SS |
321 | } |
322 | ||
323 | /* Add header file number I for this object file | |
324 | at the next successive FILENUM. */ | |
325 | ||
326 | static void | |
fba45db2 | 327 | add_this_object_header_file (int i) |
c906108c SS |
328 | { |
329 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
330 | { | |
331 | n_allocated_this_object_header_files *= 2; | |
332 | this_object_header_files | |
333 | = (int *) xrealloc ((char *) this_object_header_files, | |
c5aa993b | 334 | n_allocated_this_object_header_files * sizeof (int)); |
c906108c SS |
335 | } |
336 | ||
337 | this_object_header_files[n_this_object_header_files++] = i; | |
338 | } | |
339 | ||
340 | /* Add to this file an "old" header file, one already seen in | |
341 | a previous object file. NAME is the header file's name. | |
342 | INSTANCE is its instance code, to select among multiple | |
343 | symbol tables for the same header file. */ | |
344 | ||
345 | static void | |
a121b7c1 | 346 | add_old_header_file (const char *name, int instance) |
c906108c | 347 | { |
dd707e8e | 348 | struct header_file *p = HEADER_FILES (dbxread_objfile); |
52f0bd74 | 349 | int i; |
c906108c | 350 | |
dd707e8e | 351 | for (i = 0; i < N_HEADER_FILES (dbxread_objfile); i++) |
0ba1096a | 352 | if (filename_cmp (p[i].name, name) == 0 && instance == p[i].instance) |
c906108c SS |
353 | { |
354 | add_this_object_header_file (i); | |
355 | return; | |
356 | } | |
23136709 | 357 | repeated_header_complaint (name, symnum); |
c906108c SS |
358 | } |
359 | ||
360 | /* Add to this file a "new" header file: definitions for its types follow. | |
361 | NAME is the header file's name. | |
362 | Most often this happens only once for each distinct header file, | |
363 | but not necessarily. If it happens more than once, INSTANCE has | |
364 | a different value each time, and references to the header file | |
365 | use INSTANCE values to select among them. | |
366 | ||
367 | dbx output contains "begin" and "end" markers for each new header file, | |
368 | but at this level we just need to know which files there have been; | |
369 | so we record the file when its "begin" is seen and ignore the "end". */ | |
370 | ||
371 | static void | |
a121b7c1 | 372 | add_new_header_file (const char *name, int instance) |
c906108c | 373 | { |
52f0bd74 AC |
374 | int i; |
375 | struct header_file *hfile; | |
c906108c SS |
376 | |
377 | /* Make sure there is room for one more header file. */ | |
378 | ||
dd707e8e | 379 | i = N_ALLOCATED_HEADER_FILES (dbxread_objfile); |
c906108c | 380 | |
dd707e8e | 381 | if (N_HEADER_FILES (dbxread_objfile) == i) |
c906108c SS |
382 | { |
383 | if (i == 0) | |
384 | { | |
dd707e8e TT |
385 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = 10; |
386 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
c906108c SS |
387 | xmalloc (10 * sizeof (struct header_file)); |
388 | } | |
389 | else | |
390 | { | |
391 | i *= 2; | |
dd707e8e TT |
392 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = i; |
393 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
394 | xrealloc ((char *) HEADER_FILES (dbxread_objfile), | |
c906108c SS |
395 | (i * sizeof (struct header_file))); |
396 | } | |
397 | } | |
398 | ||
399 | /* Create an entry for this header file. */ | |
400 | ||
dd707e8e TT |
401 | i = N_HEADER_FILES (dbxread_objfile)++; |
402 | hfile = HEADER_FILES (dbxread_objfile) + i; | |
1b36a34b | 403 | hfile->name = xstrdup (name); |
c906108c SS |
404 | hfile->instance = instance; |
405 | hfile->length = 10; | |
8d749320 | 406 | hfile->vector = XCNEWVEC (struct type *, 10); |
c906108c SS |
407 | |
408 | add_this_object_header_file (i); | |
409 | } | |
410 | ||
411 | #if 0 | |
412 | static struct type ** | |
fba45db2 | 413 | explicit_lookup_type (int real_filenum, int index) |
c906108c | 414 | { |
dd707e8e | 415 | struct header_file *f = &HEADER_FILES (dbxread_objfile)[real_filenum]; |
c906108c SS |
416 | |
417 | if (index >= f->length) | |
418 | { | |
419 | f->length *= 2; | |
420 | f->vector = (struct type **) | |
421 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
422 | memset (&f->vector[f->length / 2], | |
c5aa993b | 423 | '\0', f->length * sizeof (struct type *) / 2); |
c906108c SS |
424 | } |
425 | return &f->vector[index]; | |
426 | } | |
427 | #endif | |
428 | \f | |
429 | static void | |
8dddcb8f | 430 | record_minimal_symbol (minimal_symbol_reader &reader, |
9675da25 | 431 | const char *name, unrelocated_addr address, int type, |
fba45db2 | 432 | struct objfile *objfile) |
c906108c SS |
433 | { |
434 | enum minimal_symbol_type ms_type; | |
435 | int section; | |
c906108c SS |
436 | |
437 | switch (type) | |
438 | { | |
439 | case N_TEXT | N_EXT: | |
440 | ms_type = mst_text; | |
b8fbeb18 | 441 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
442 | break; |
443 | case N_DATA | N_EXT: | |
444 | ms_type = mst_data; | |
b8fbeb18 | 445 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
446 | break; |
447 | case N_BSS | N_EXT: | |
448 | ms_type = mst_bss; | |
b8fbeb18 | 449 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
450 | break; |
451 | case N_ABS | N_EXT: | |
452 | ms_type = mst_abs; | |
453 | section = -1; | |
c906108c SS |
454 | break; |
455 | #ifdef N_SETV | |
456 | case N_SETV | N_EXT: | |
457 | ms_type = mst_data; | |
b8fbeb18 | 458 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
459 | break; |
460 | case N_SETV: | |
461 | /* I don't think this type actually exists; since a N_SETV is the result | |
dda83cd7 SM |
462 | of going over many .o files, it doesn't make sense to have one |
463 | file local. */ | |
c906108c | 464 | ms_type = mst_file_data; |
b8fbeb18 | 465 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
466 | break; |
467 | #endif | |
468 | case N_TEXT: | |
469 | case N_NBTEXT: | |
470 | case N_FN: | |
471 | case N_FN_SEQ: | |
472 | ms_type = mst_file_text; | |
b8fbeb18 | 473 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
474 | break; |
475 | case N_DATA: | |
476 | ms_type = mst_file_data; | |
477 | ||
478 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
dda83cd7 SM |
479 | Record it as global even if it's local, not global, so |
480 | lookup_minimal_symbol can find it. We don't check symbol_leading_char | |
481 | because for SunOS4 it always is '_'. */ | |
91f54576 | 482 | if (name[8] == 'C' && strcmp ("__DYNAMIC", name) == 0) |
c906108c SS |
483 | ms_type = mst_data; |
484 | ||
485 | /* Same with virtual function tables, both global and static. */ | |
486 | { | |
bec71544 | 487 | const char *tempstring = name; |
9a619af0 | 488 | |
98badbfd | 489 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd.get ())) |
c906108c | 490 | ++tempstring; |
015a42b4 | 491 | if (is_vtable_name (tempstring)) |
c906108c SS |
492 | ms_type = mst_data; |
493 | } | |
b8fbeb18 | 494 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
495 | break; |
496 | case N_BSS: | |
497 | ms_type = mst_file_bss; | |
b8fbeb18 | 498 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
499 | break; |
500 | default: | |
501 | ms_type = mst_unknown; | |
502 | section = -1; | |
c906108c | 503 | break; |
c5aa993b | 504 | } |
c906108c SS |
505 | |
506 | if ((ms_type == mst_file_text || ms_type == mst_text) | |
507 | && address < lowest_text_address) | |
508 | lowest_text_address = address; | |
509 | ||
8dddcb8f | 510 | reader.record_with_info (name, address, ms_type, section); |
c906108c SS |
511 | } |
512 | \f | |
513 | /* Scan and build partial symbols for a symbol file. | |
514 | We have been initialized by a call to dbx_symfile_init, which | |
515 | put all the relevant info into a "struct dbx_symfile_info", | |
f4352531 | 516 | hung off the objfile structure. */ |
c906108c SS |
517 | |
518 | static void | |
b15cc25c | 519 | dbx_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
520 | { |
521 | bfd *sym_bfd; | |
522 | int val; | |
c906108c | 523 | |
98badbfd | 524 | sym_bfd = objfile->obfd.get (); |
c906108c SS |
525 | |
526 | /* .o and .nlm files are relocatables with text, data and bss segs based at | |
527 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for | |
528 | symbols with a value of 0. */ | |
529 | ||
530 | symfile_relocatable = bfd_get_file_flags (sym_bfd) & HAS_RELOC; | |
531 | ||
c906108c SS |
532 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); |
533 | if (val < 0) | |
4262abfb | 534 | perror_with_name (objfile_name (objfile)); |
c906108c | 535 | |
c906108c SS |
536 | symbol_size = DBX_SYMBOL_SIZE (objfile); |
537 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
538 | ||
33c7c59d | 539 | scoped_free_pendings free_pending; |
c906108c | 540 | |
d25e8719 | 541 | minimal_symbol_reader reader (objfile); |
c906108c | 542 | |
0963b4bd | 543 | /* Read stabs data from executable file and define symbols. */ |
c906108c | 544 | |
eb36a3eb TT |
545 | psymbol_functions *psf = new psymbol_functions (); |
546 | psymtab_storage *partial_symtabs = psf->get_partial_symtabs ().get (); | |
547 | objfile->qf.emplace_front (psf); | |
7e9c0476 | 548 | read_dbx_symtab (reader, partial_symtabs, objfile); |
c906108c | 549 | |
c906108c | 550 | /* Install any minimal symbols that have been collected as the current |
0963b4bd | 551 | minimal symbols for this objfile. */ |
c906108c | 552 | |
d25e8719 | 553 | reader.install (); |
c906108c SS |
554 | } |
555 | ||
556 | /* Initialize anything that needs initializing when a completely new | |
557 | symbol file is specified (not just adding some symbols from another | |
558 | file, e.g. a shared library). */ | |
559 | ||
560 | static void | |
fba45db2 | 561 | dbx_new_init (struct objfile *ignore) |
c906108c SS |
562 | { |
563 | stabsread_new_init (); | |
c906108c SS |
564 | init_header_files (); |
565 | } | |
566 | ||
567 | ||
568 | /* dbx_symfile_init () | |
569 | is the dbx-specific initialization routine for reading symbols. | |
570 | It is passed a struct objfile which contains, among other things, | |
571 | the BFD for the file whose symbols are being read, and a slot for a pointer | |
572 | to "private data" which we fill with goodies. | |
573 | ||
574 | We read the string table into malloc'd space and stash a pointer to it. | |
575 | ||
576 | Since BFD doesn't know how to read debug symbols in a format-independent | |
577 | way (and may never do so...), we have to do it ourselves. We will never | |
0963b4bd | 578 | be called unless this is an a.out (or very similar) file. |
c906108c SS |
579 | FIXME, there should be a cleaner peephole into the BFD environment here. */ |
580 | ||
c5aa993b | 581 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
c906108c SS |
582 | |
583 | static void | |
fba45db2 | 584 | dbx_symfile_init (struct objfile *objfile) |
c906108c SS |
585 | { |
586 | int val; | |
98badbfd | 587 | bfd *sym_bfd = objfile->obfd.get (); |
b16c44de | 588 | const char *name = bfd_get_filename (sym_bfd); |
c906108c SS |
589 | asection *text_sect; |
590 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; | |
591 | ||
0963b4bd | 592 | /* Allocate struct to keep track of the symfile. */ |
22a20dca | 593 | dbx_objfile_data_key.emplace (objfile); |
c906108c SS |
594 | |
595 | DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
596 | DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data"); | |
597 | DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss"); | |
598 | ||
0963b4bd | 599 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c SS |
600 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
601 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
602 | ||
0963b4bd | 603 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c | 604 | |
c906108c SS |
605 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
606 | if (!text_sect) | |
8a3fe4f8 | 607 | error (_("Can't find .text section in symbol file")); |
fd361982 AM |
608 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (text_sect); |
609 | DBX_TEXT_SIZE (objfile) = bfd_section_size (text_sect); | |
c906108c SS |
610 | |
611 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); | |
612 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); | |
613 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; | |
614 | ||
8b92e4d5 EZ |
615 | /* Read the string table and stash it away in the objfile_obstack. |
616 | When we blow away the objfile the string table goes away as well. | |
c906108c SS |
617 | Note that gdb used to use the results of attempting to malloc the |
618 | string table, based on the size it read, as a form of sanity check | |
619 | for botched byte swapping, on the theory that a byte swapped string | |
620 | table size would be so totally bogus that the malloc would fail. Now | |
8b92e4d5 | 621 | that we put in on the objfile_obstack, we can't do this since gdb gets |
c906108c SS |
622 | a fatal error (out of virtual memory) if the size is bogus. We can |
623 | however at least check to see if the size is less than the size of | |
624 | the size field itself, or larger than the size of the entire file. | |
625 | Note that all valid string tables have a size greater than zero, since | |
0963b4bd | 626 | the bytes used to hold the size are included in the count. */ |
c906108c SS |
627 | |
628 | if (STRING_TABLE_OFFSET == 0) | |
629 | { | |
630 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET | |
dda83cd7 SM |
631 | will never be zero, even when there is no string table. This |
632 | would appear to be a bug in bfd. */ | |
c906108c SS |
633 | DBX_STRINGTAB_SIZE (objfile) = 0; |
634 | DBX_STRINGTAB (objfile) = NULL; | |
635 | } | |
636 | else | |
637 | { | |
638 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); | |
639 | if (val < 0) | |
640 | perror_with_name (name); | |
c5aa993b | 641 | |
4efb68b1 AC |
642 | memset (size_temp, 0, sizeof (size_temp)); |
643 | val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd); | |
c906108c SS |
644 | if (val < 0) |
645 | { | |
646 | perror_with_name (name); | |
647 | } | |
648 | else if (val == 0) | |
649 | { | |
650 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
651 | EOF if there is no string table, and attempting to read the size | |
0963b4bd | 652 | from EOF will read zero bytes. */ |
c906108c SS |
653 | DBX_STRINGTAB_SIZE (objfile) = 0; |
654 | DBX_STRINGTAB (objfile) = NULL; | |
655 | } | |
656 | else | |
657 | { | |
658 | /* Read some data that would appear to be the string table size. | |
659 | If there really is a string table, then it is probably the right | |
660 | size. Byteswap if necessary and validate the size. Note that | |
661 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
662 | random data that happened to be at STRING_TABLE_OFFSET, because | |
663 | bfd can't tell us there is no string table, the sanity checks may | |
0963b4bd | 664 | or may not catch this. */ |
c906108c | 665 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); |
c5aa993b | 666 | |
c906108c SS |
667 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) |
668 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
8a3fe4f8 | 669 | error (_("ridiculous string table size (%d bytes)."), |
c906108c | 670 | DBX_STRINGTAB_SIZE (objfile)); |
c5aa993b | 671 | |
c906108c | 672 | DBX_STRINGTAB (objfile) = |
8b92e4d5 | 673 | (char *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
674 | DBX_STRINGTAB_SIZE (objfile)); |
675 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); | |
c5aa993b | 676 | |
c906108c | 677 | /* Now read in the string table in one big gulp. */ |
c5aa993b | 678 | |
c906108c SS |
679 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
680 | if (val < 0) | |
681 | perror_with_name (name); | |
3a42e9d0 AM |
682 | val = bfd_bread (DBX_STRINGTAB (objfile), |
683 | DBX_STRINGTAB_SIZE (objfile), | |
684 | sym_bfd); | |
c906108c SS |
685 | if (val != DBX_STRINGTAB_SIZE (objfile)) |
686 | perror_with_name (name); | |
687 | } | |
688 | } | |
689 | } | |
690 | ||
691 | /* Perform any local cleanups required when we are done with a particular | |
692 | objfile. I.E, we are in the process of discarding all symbol information | |
693 | for an objfile, freeing up all memory held for it, and unlinking the | |
0963b4bd | 694 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
695 | |
696 | static void | |
fba45db2 | 697 | dbx_symfile_finish (struct objfile *objfile) |
c906108c | 698 | { |
d2f4b8fe TT |
699 | free_header_files (); |
700 | } | |
701 | ||
22a20dca | 702 | dbx_symfile_info::~dbx_symfile_info () |
d2f4b8fe | 703 | { |
22a20dca | 704 | if (header_files != NULL) |
c906108c | 705 | { |
22a20dca TT |
706 | int i = n_header_files; |
707 | struct header_file *hfiles = header_files; | |
c906108c | 708 | |
d2f4b8fe TT |
709 | while (--i >= 0) |
710 | { | |
711 | xfree (hfiles[i].name); | |
712 | xfree (hfiles[i].vector); | |
c906108c | 713 | } |
d2f4b8fe | 714 | xfree (hfiles); |
c906108c | 715 | } |
c906108c | 716 | } |
d2f4b8fe | 717 | |
c906108c | 718 | \f |
c5aa993b | 719 | |
c906108c SS |
720 | /* Buffer for reading the symbol table entries. */ |
721 | static struct external_nlist symbuf[4096]; | |
722 | static int symbuf_idx; | |
723 | static int symbuf_end; | |
724 | ||
c906108c SS |
725 | /* Name of last function encountered. Used in Solaris to approximate |
726 | object file boundaries. */ | |
a121b7c1 | 727 | static const char *last_function_name; |
c906108c SS |
728 | |
729 | /* The address in memory of the string table of the object file we are | |
730 | reading (which might not be the "main" object file, but might be a | |
731 | shared library or some other dynamically loaded thing). This is | |
732 | set by read_dbx_symtab when building psymtabs, and by | |
733 | read_ofile_symtab when building symtabs, and is used only by | |
734 | next_symbol_text. FIXME: If that is true, we don't need it when | |
735 | building psymtabs, right? */ | |
736 | static char *stringtab_global; | |
737 | ||
738 | /* These variables are used to control fill_symbuf when the stabs | |
739 | symbols are not contiguous (as may be the case when a COFF file is | |
740 | linked using --split-by-reloc). */ | |
e2a03548 TT |
741 | static const std::vector<asection *> *symbuf_sections; |
742 | static size_t sect_idx; | |
c906108c SS |
743 | static unsigned int symbuf_left; |
744 | static unsigned int symbuf_read; | |
745 | ||
086df311 DJ |
746 | /* This variable stores a global stabs buffer, if we read stabs into |
747 | memory in one chunk in order to process relocations. */ | |
748 | static bfd_byte *stabs_data; | |
749 | ||
c906108c SS |
750 | /* Refill the symbol table input buffer |
751 | and set the variables that control fetching entries from it. | |
752 | Reports an error if no data available. | |
753 | This function can read past the end of the symbol table | |
754 | (into the string table) but this does no harm. */ | |
755 | ||
756 | static void | |
fba45db2 | 757 | fill_symbuf (bfd *sym_bfd) |
c906108c SS |
758 | { |
759 | unsigned int count; | |
760 | int nbytes; | |
761 | ||
086df311 DJ |
762 | if (stabs_data) |
763 | { | |
764 | nbytes = sizeof (symbuf); | |
765 | if (nbytes > symbuf_left) | |
dda83cd7 | 766 | nbytes = symbuf_left; |
086df311 DJ |
767 | memcpy (symbuf, stabs_data + symbuf_read, nbytes); |
768 | } | |
769 | else if (symbuf_sections == NULL) | |
770 | { | |
771 | count = sizeof (symbuf); | |
772 | nbytes = bfd_bread (symbuf, count, sym_bfd); | |
773 | } | |
c906108c SS |
774 | else |
775 | { | |
776 | if (symbuf_left <= 0) | |
777 | { | |
e2a03548 | 778 | file_ptr filepos = (*symbuf_sections)[sect_idx]->filepos; |
9a619af0 | 779 | |
c906108c SS |
780 | if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0) |
781 | perror_with_name (bfd_get_filename (sym_bfd)); | |
fd361982 | 782 | symbuf_left = bfd_section_size ((*symbuf_sections)[sect_idx]); |
c906108c | 783 | symbol_table_offset = filepos - symbuf_read; |
e2a03548 | 784 | ++sect_idx; |
c906108c SS |
785 | } |
786 | ||
787 | count = symbuf_left; | |
788 | if (count > sizeof (symbuf)) | |
789 | count = sizeof (symbuf); | |
086df311 | 790 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
c906108c SS |
791 | } |
792 | ||
c906108c SS |
793 | if (nbytes < 0) |
794 | perror_with_name (bfd_get_filename (sym_bfd)); | |
795 | else if (nbytes == 0) | |
8a3fe4f8 | 796 | error (_("Premature end of file reading symbol table")); |
c906108c SS |
797 | symbuf_end = nbytes / symbol_size; |
798 | symbuf_idx = 0; | |
799 | symbuf_left -= nbytes; | |
800 | symbuf_read += nbytes; | |
801 | } | |
802 | ||
086df311 DJ |
803 | static void |
804 | stabs_seek (int sym_offset) | |
805 | { | |
806 | if (stabs_data) | |
807 | { | |
808 | symbuf_read += sym_offset; | |
809 | symbuf_left -= sym_offset; | |
810 | } | |
811 | else | |
812 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); | |
813 | } | |
814 | ||
c906108c SS |
815 | #define INTERNALIZE_SYMBOL(intern, extern, abfd) \ |
816 | { \ | |
c906108c | 817 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \ |
83b94be5 AM |
818 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \ |
819 | (intern).n_other = 0; \ | |
c906108c | 820 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \ |
40b3352b L |
821 | if (bfd_get_sign_extend_vma (abfd)) \ |
822 | (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \ | |
823 | else \ | |
824 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \ | |
c906108c SS |
825 | } |
826 | ||
827 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
828 | that hasn't been swapped. Swap the symbol at the same time | |
829 | that symbuf_idx is incremented. */ | |
830 | ||
831 | /* dbx allows the text of a symbol name to be continued into the | |
832 | next symbol name! When such a continuation is encountered | |
833 | (a \ at the end of the text of a name) | |
834 | call this function to get the continuation. */ | |
835 | ||
a121b7c1 | 836 | static const char * |
fba45db2 | 837 | dbx_next_symbol_text (struct objfile *objfile) |
c906108c SS |
838 | { |
839 | struct internal_nlist nlist; | |
840 | ||
841 | if (symbuf_idx == symbuf_end) | |
842 | fill_symbuf (symfile_bfd); | |
843 | ||
844 | symnum++; | |
c5aa993b | 845 | INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], symfile_bfd); |
c906108c SS |
846 | OBJSTAT (objfile, n_stabs++); |
847 | ||
848 | symbuf_idx++; | |
849 | ||
850 | return nlist.n_strx + stringtab_global + file_string_table_offset; | |
851 | } | |
852 | \f | |
c906108c SS |
853 | |
854 | /* Given a name, value pair, find the corresponding | |
855 | bincl in the list. Return the partial symtab associated | |
856 | with that header_file_location. */ | |
857 | ||
891813be | 858 | static legacy_psymtab * |
a121b7c1 | 859 | find_corresponding_bincl_psymtab (const char *name, int instance) |
c906108c | 860 | { |
52941706 | 861 | for (const header_file_location &bincl : *bincl_list) |
bf259e25 TT |
862 | if (bincl.instance == instance |
863 | && strcmp (name, bincl.name) == 0) | |
864 | return bincl.pst; | |
c906108c | 865 | |
23136709 | 866 | repeated_header_complaint (name, symnum); |
891813be | 867 | return (legacy_psymtab *) 0; |
c906108c SS |
868 | } |
869 | ||
6a34fd2f EZ |
870 | /* Set namestring based on nlist. If the string table index is invalid, |
871 | give a fake name, and print a single error message per symbol file read, | |
872 | rather than abort the symbol reading or flood the user with messages. */ | |
873 | ||
a121b7c1 | 874 | static const char * |
83b94be5 | 875 | set_namestring (struct objfile *objfile, const struct internal_nlist *nlist) |
6a34fd2f | 876 | { |
a121b7c1 | 877 | const char *namestring; |
6a34fd2f | 878 | |
5409dacf JK |
879 | if (nlist->n_strx + file_string_table_offset |
880 | >= DBX_STRINGTAB_SIZE (objfile) | |
881 | || nlist->n_strx + file_string_table_offset < nlist->n_strx) | |
6a34fd2f | 882 | { |
b98664d3 | 883 | complaint (_("bad string table offset in symbol %d"), |
23136709 | 884 | symnum); |
6a34fd2f EZ |
885 | namestring = "<bad string table offset>"; |
886 | } | |
887 | else | |
83b94be5 AM |
888 | namestring = (nlist->n_strx + file_string_table_offset |
889 | + DBX_STRINGTAB (objfile)); | |
6a34fd2f EZ |
890 | return namestring; |
891 | } | |
892 | ||
79748972 TT |
893 | static struct bound_minimal_symbol |
894 | find_stab_function (const char *namestring, const char *filename, | |
895 | struct objfile *objfile) | |
4867e41e | 896 | { |
3b7344d5 | 897 | struct bound_minimal_symbol msym; |
4867e41e DM |
898 | int n; |
899 | ||
a121b7c1 PA |
900 | const char *colon = strchr (namestring, ':'); |
901 | if (colon == NULL) | |
902 | n = 0; | |
903 | else | |
904 | n = colon - namestring; | |
905 | ||
906 | char *p = (char *) alloca (n + 2); | |
4867e41e DM |
907 | strncpy (p, namestring, n); |
908 | p[n] = 0; | |
909 | ||
910 | msym = lookup_minimal_symbol (p, filename, objfile); | |
3b7344d5 | 911 | if (msym.minsym == NULL) |
4867e41e DM |
912 | { |
913 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
dda83cd7 SM |
914 | try again with an appended underscore if the minimal symbol |
915 | was not found. */ | |
4867e41e DM |
916 | p[n] = '_'; |
917 | p[n + 1] = 0; | |
918 | msym = lookup_minimal_symbol (p, filename, objfile); | |
919 | } | |
920 | ||
3b7344d5 | 921 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 922 | { |
0963b4bd | 923 | /* Try again without the filename. */ |
4867e41e DM |
924 | p[n] = 0; |
925 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
926 | } | |
3b7344d5 | 927 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 928 | { |
0963b4bd | 929 | /* And try again for Sun Fortran, but without the filename. */ |
4867e41e DM |
930 | p[n] = '_'; |
931 | p[n + 1] = 0; | |
932 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
933 | } | |
934 | ||
79748972 | 935 | return msym; |
4867e41e | 936 | } |
4867e41e | 937 | |
23136709 KB |
938 | static void |
939 | function_outside_compilation_unit_complaint (const char *arg1) | |
940 | { | |
b98664d3 | 941 | complaint (_("function `%s' appears to be defined " |
3e43a32a | 942 | "outside of all compilation units"), |
23136709 KB |
943 | arg1); |
944 | } | |
945 | ||
d4f3574e | 946 | /* Setup partial_symtab's describing each source file for which |
0963b4bd | 947 | debugging information is available. */ |
c906108c SS |
948 | |
949 | static void | |
7e9c0476 TT |
950 | read_dbx_symtab (minimal_symbol_reader &reader, |
951 | psymtab_storage *partial_symtabs, | |
952 | struct objfile *objfile) | |
c906108c | 953 | { |
08feed99 | 954 | struct gdbarch *gdbarch = objfile->arch (); |
0963b4bd | 955 | struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch. */ |
c906108c | 956 | struct internal_nlist nlist; |
d4f3574e SS |
957 | CORE_ADDR text_addr; |
958 | int text_size; | |
a121b7c1 | 959 | const char *sym_name; |
71c25dea | 960 | int sym_len; |
c906108c | 961 | |
a121b7c1 | 962 | const char *namestring; |
c906108c SS |
963 | int nsl; |
964 | int past_first_source_file = 0; | |
c906108c | 965 | CORE_ADDR last_function_start = 0; |
c906108c SS |
966 | bfd *abfd; |
967 | int textlow_not_set; | |
7c8a5605 | 968 | int data_sect_index; |
c906108c | 969 | |
0963b4bd | 970 | /* Current partial symtab. */ |
891813be | 971 | legacy_psymtab *pst; |
c906108c | 972 | |
0963b4bd | 973 | /* List of current psymtab's include files. */ |
0d5cff50 | 974 | const char **psymtab_include_list; |
c906108c SS |
975 | int includes_allocated; |
976 | int includes_used; | |
977 | ||
0963b4bd | 978 | /* Index within current psymtab dependency list. */ |
891813be | 979 | legacy_psymtab **dependency_list; |
c906108c SS |
980 | int dependencies_used, dependencies_allocated; |
981 | ||
d4f3574e SS |
982 | text_addr = DBX_TEXT_ADDR (objfile); |
983 | text_size = DBX_TEXT_SIZE (objfile); | |
984 | ||
c906108c SS |
985 | /* FIXME. We probably want to change stringtab_global rather than add this |
986 | while processing every symbol entry. FIXME. */ | |
987 | file_string_table_offset = 0; | |
988 | next_file_string_table_offset = 0; | |
989 | ||
990 | stringtab_global = DBX_STRINGTAB (objfile); | |
c5aa993b | 991 | |
891813be | 992 | pst = (legacy_psymtab *) 0; |
c906108c SS |
993 | |
994 | includes_allocated = 30; | |
995 | includes_used = 0; | |
0d5cff50 DE |
996 | psymtab_include_list = (const char **) alloca (includes_allocated * |
997 | sizeof (const char *)); | |
c906108c SS |
998 | |
999 | dependencies_allocated = 30; | |
1000 | dependencies_used = 0; | |
1001 | dependency_list = | |
891813be TT |
1002 | (legacy_psymtab **) alloca (dependencies_allocated * |
1003 | sizeof (legacy_psymtab *)); | |
c906108c SS |
1004 | |
1005 | /* Init bincl list */ | |
bf259e25 TT |
1006 | std::vector<struct header_file_location> bincl_storage; |
1007 | scoped_restore restore_bincl_global | |
1008 | = make_scoped_restore (&bincl_list, &bincl_storage); | |
c906108c | 1009 | |
46212e0b | 1010 | set_last_source_file (NULL); |
c906108c | 1011 | |
9675da25 | 1012 | lowest_text_address = (unrelocated_addr) -1; |
c906108c | 1013 | |
98badbfd TT |
1014 | symfile_bfd = objfile->obfd.get (); /* For next_text_symbol. */ |
1015 | abfd = objfile->obfd.get (); | |
c906108c SS |
1016 | symbuf_end = symbuf_idx = 0; |
1017 | next_symbol_text_func = dbx_next_symbol_text; | |
1018 | textlow_not_set = 1; | |
1019 | has_line_numbers = 0; | |
1020 | ||
4f49b26b JB |
1021 | /* FIXME: jimb/2003-09-12: We don't apply the right section's offset |
1022 | to global and static variables. The stab for a global or static | |
1023 | variable doesn't give us any indication of which section it's in, | |
1024 | so we can't tell immediately which offset in | |
1025 | objfile->section_offsets we should apply to the variable's | |
1026 | address. | |
1027 | ||
1028 | We could certainly find out which section contains the variable | |
1029 | by looking up the variable's unrelocated address with | |
1030 | find_pc_section, but that would be expensive; this is the | |
1031 | function that constructs the partial symbol tables by examining | |
1032 | every symbol in the entire executable, and it's | |
1033 | performance-critical. So that expense would not be welcome. I'm | |
1034 | not sure what to do about this at the moment. | |
1035 | ||
1036 | What we have done for years is to simply assume that the .data | |
1037 | section's offset is appropriate for all global and static | |
1038 | variables. Recently, this was expanded to fall back to the .bss | |
1039 | section's offset if there is no .data section, and then to the | |
1040 | .rodata section's offset. */ | |
7c8a5605 JB |
1041 | data_sect_index = objfile->sect_index_data; |
1042 | if (data_sect_index == -1) | |
1043 | data_sect_index = SECT_OFF_BSS (objfile); | |
2a13f9bc JB |
1044 | if (data_sect_index == -1) |
1045 | data_sect_index = SECT_OFF_RODATA (objfile); | |
d646061f JB |
1046 | |
1047 | /* If data_sect_index is still -1, that's okay. It's perfectly fine | |
1048 | for the file to have no .data, no .bss, and no .text at all, if | |
6a053cb1 | 1049 | it also has no global or static variables. */ |
7c8a5605 | 1050 | |
c906108c SS |
1051 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
1052 | { | |
0963b4bd MS |
1053 | /* Get the symbol for this run and pull out some info. */ |
1054 | QUIT; /* Allow this to be interruptable. */ | |
c906108c SS |
1055 | if (symbuf_idx == symbuf_end) |
1056 | fill_symbuf (abfd); | |
1057 | bufp = &symbuf[symbuf_idx++]; | |
1058 | ||
1059 | /* | |
1060 | * Special case to speed up readin. | |
1061 | */ | |
1062 | if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE) | |
1063 | { | |
1064 | has_line_numbers = 1; | |
1065 | continue; | |
1066 | } | |
1067 | ||
1068 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
1069 | OBJSTAT (objfile, n_stabs++); | |
1070 | ||
1071 | /* Ok. There is a lot of code duplicated in the rest of this | |
dda83cd7 SM |
1072 | switch statement (for efficiency reasons). Since I don't |
1073 | like duplicating code, I will do my penance here, and | |
1074 | describe the code which is duplicated: | |
c906108c | 1075 | |
dda83cd7 SM |
1076 | *) The assignment to namestring. |
1077 | *) The call to strchr. | |
1078 | *) The addition of a partial symbol the two partial | |
1079 | symbol lists. This last is a large section of code, so | |
1080 | I've imbedded it in the following macro. */ | |
c5aa993b | 1081 | |
6a34fd2f EZ |
1082 | switch (nlist.n_type) |
1083 | { | |
6a34fd2f EZ |
1084 | /* |
1085 | * Standard, external, non-debugger, symbols | |
1086 | */ | |
1087 | ||
9ce5d3bb DE |
1088 | case N_TEXT | N_EXT: |
1089 | case N_NBTEXT | N_EXT: | |
6a34fd2f EZ |
1090 | goto record_it; |
1091 | ||
9ce5d3bb DE |
1092 | case N_DATA | N_EXT: |
1093 | case N_NBDATA | N_EXT: | |
6a34fd2f EZ |
1094 | goto record_it; |
1095 | ||
9ce5d3bb DE |
1096 | case N_BSS: |
1097 | case N_BSS | N_EXT: | |
1098 | case N_NBBSS | N_EXT: | |
1099 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
6a34fd2f EZ |
1100 | goto record_it; |
1101 | ||
9ce5d3bb | 1102 | case N_ABS | N_EXT: |
6a34fd2f | 1103 | record_it: |
83b94be5 | 1104 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1105 | |
9675da25 TT |
1106 | record_minimal_symbol (reader, namestring, |
1107 | unrelocated_addr (nlist.n_value), | |
6a34fd2f EZ |
1108 | nlist.n_type, objfile); /* Always */ |
1109 | continue; | |
1110 | ||
0963b4bd | 1111 | /* Standard, local, non-debugger, symbols. */ |
6a34fd2f | 1112 | |
9ce5d3bb | 1113 | case N_NBTEXT: |
6a34fd2f EZ |
1114 | |
1115 | /* We need to be able to deal with both N_FN or N_TEXT, | |
1116 | because we have no way of knowing whether the sys-supplied ld | |
1117 | or GNU ld was used to make the executable. Sequents throw | |
1118 | in another wrinkle -- they renumbered N_FN. */ | |
1119 | ||
9ce5d3bb DE |
1120 | case N_FN: |
1121 | case N_FN_SEQ: | |
1122 | case N_TEXT: | |
83b94be5 | 1123 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1124 | |
1125 | if ((namestring[0] == '-' && namestring[1] == 'l') | |
1126 | || (namestring[(nsl = strlen (namestring)) - 1] == 'o' | |
1127 | && namestring[nsl - 2] == '.')) | |
9ce5d3bb | 1128 | { |
584d0cda TT |
1129 | unrelocated_addr unrel_val = unrelocated_addr (nlist.n_value); |
1130 | ||
9ce5d3bb DE |
1131 | if (past_first_source_file && pst |
1132 | /* The gould NP1 uses low values for .o and -l symbols | |
1133 | which are not the address. */ | |
584d0cda | 1134 | && unrel_val >= pst->raw_text_low ()) |
9ce5d3bb | 1135 | { |
7e9c0476 TT |
1136 | dbx_end_psymtab (objfile, partial_symtabs, |
1137 | pst, psymtab_include_list, | |
8763cede | 1138 | includes_used, symnum * symbol_size, |
584d0cda TT |
1139 | unrel_val > pst->raw_text_high () |
1140 | ? unrel_val : pst->raw_text_high (), | |
8763cede DE |
1141 | dependency_list, dependencies_used, |
1142 | textlow_not_set); | |
891813be | 1143 | pst = (legacy_psymtab *) 0; |
9ce5d3bb DE |
1144 | includes_used = 0; |
1145 | dependencies_used = 0; | |
578933ab | 1146 | has_line_numbers = 0; |
9ce5d3bb DE |
1147 | } |
1148 | else | |
1149 | past_first_source_file = 1; | |
9ce5d3bb | 1150 | } |
6a34fd2f | 1151 | else |
9ce5d3bb | 1152 | goto record_it; |
6a34fd2f EZ |
1153 | continue; |
1154 | ||
9ce5d3bb | 1155 | case N_DATA: |
6a34fd2f EZ |
1156 | goto record_it; |
1157 | ||
9ce5d3bb | 1158 | case N_UNDF | N_EXT: |
d4862372 JB |
1159 | /* The case (nlist.n_value != 0) is a "Fortran COMMON" symbol. |
1160 | We used to rely on the target to tell us whether it knows | |
1161 | where the symbol has been relocated to, but none of the | |
1162 | target implementations actually provided that operation. | |
1163 | So we just ignore the symbol, the same way we would do if | |
1164 | we had a target-side symbol lookup which returned no match. | |
1165 | ||
1166 | All other symbols (with nlist.n_value == 0), are really | |
1167 | undefined, and so we ignore them too. */ | |
1168 | continue; | |
6a34fd2f | 1169 | |
9ce5d3bb | 1170 | case N_UNDF: |
6a34fd2f | 1171 | if (processing_acc_compilation && nlist.n_strx == 1) |
9ce5d3bb DE |
1172 | { |
1173 | /* Deal with relative offsets in the string table | |
1174 | used in ELF+STAB under Solaris. If we want to use the | |
1175 | n_strx field, which contains the name of the file, | |
1176 | we must adjust file_string_table_offset *before* calling | |
1177 | set_namestring(). */ | |
1178 | past_first_source_file = 1; | |
1179 | file_string_table_offset = next_file_string_table_offset; | |
1180 | next_file_string_table_offset = | |
1181 | file_string_table_offset + nlist.n_value; | |
1182 | if (next_file_string_table_offset < file_string_table_offset) | |
1183 | error (_("string table offset backs up at %d"), symnum); | |
1184 | /* FIXME -- replace error() with complaint. */ | |
1185 | continue; | |
1186 | } | |
6a34fd2f EZ |
1187 | continue; |
1188 | ||
1189 | /* Lots of symbol types we can just ignore. */ | |
1190 | ||
9ce5d3bb DE |
1191 | case N_ABS: |
1192 | case N_NBDATA: | |
1193 | case N_NBBSS: | |
6a34fd2f EZ |
1194 | continue; |
1195 | ||
0963b4bd | 1196 | /* Keep going . . . */ |
6a34fd2f EZ |
1197 | |
1198 | /* | |
1199 | * Special symbol types for GNU | |
1200 | */ | |
9ce5d3bb DE |
1201 | case N_INDR: |
1202 | case N_INDR | N_EXT: | |
1203 | case N_SETA: | |
1204 | case N_SETA | N_EXT: | |
1205 | case N_SETT: | |
1206 | case N_SETT | N_EXT: | |
1207 | case N_SETD: | |
1208 | case N_SETD | N_EXT: | |
1209 | case N_SETB: | |
1210 | case N_SETB | N_EXT: | |
1211 | case N_SETV: | |
6a34fd2f EZ |
1212 | continue; |
1213 | ||
1214 | /* | |
1215 | * Debugger symbols | |
1216 | */ | |
1217 | ||
9ce5d3bb | 1218 | case N_SO: |
6a34fd2f EZ |
1219 | { |
1220 | CORE_ADDR valu; | |
1221 | static int prev_so_symnum = -10; | |
1222 | static int first_so_symnum; | |
0ba1096a | 1223 | const char *p; |
a121b7c1 | 1224 | static const char *dirname_nso; |
6a34fd2f EZ |
1225 | int prev_textlow_not_set; |
1226 | ||
79748972 | 1227 | valu = nlist.n_value; |
6a34fd2f EZ |
1228 | |
1229 | prev_textlow_not_set = textlow_not_set; | |
1230 | ||
6a34fd2f | 1231 | /* A zero value is probably an indication for the SunPRO 3.0 |
8763cede | 1232 | compiler. dbx_end_psymtab explicitly tests for zero, so |
6a34fd2f EZ |
1233 | don't relocate it. */ |
1234 | ||
203c3895 | 1235 | if (nlist.n_value == 0 |
5e2b427d | 1236 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
6a34fd2f EZ |
1237 | { |
1238 | textlow_not_set = 1; | |
1239 | valu = 0; | |
1240 | } | |
1241 | else | |
1242 | textlow_not_set = 0; | |
203c3895 | 1243 | |
6a34fd2f EZ |
1244 | past_first_source_file = 1; |
1245 | ||
1246 | if (prev_so_symnum != symnum - 1) | |
0963b4bd | 1247 | { /* Here if prev stab wasn't N_SO. */ |
6a34fd2f EZ |
1248 | first_so_symnum = symnum; |
1249 | ||
1250 | if (pst) | |
1251 | { | |
584d0cda | 1252 | unrelocated_addr unrel_value = unrelocated_addr (valu); |
7e9c0476 TT |
1253 | dbx_end_psymtab (objfile, partial_symtabs, |
1254 | pst, psymtab_include_list, | |
8763cede | 1255 | includes_used, symnum * symbol_size, |
584d0cda TT |
1256 | (unrel_value > pst->raw_text_high () |
1257 | ? unrel_value : pst->raw_text_high ()), | |
8763cede DE |
1258 | dependency_list, dependencies_used, |
1259 | prev_textlow_not_set); | |
891813be | 1260 | pst = (legacy_psymtab *) 0; |
6a34fd2f EZ |
1261 | includes_used = 0; |
1262 | dependencies_used = 0; | |
578933ab | 1263 | has_line_numbers = 0; |
6a34fd2f EZ |
1264 | } |
1265 | } | |
1266 | ||
1267 | prev_so_symnum = symnum; | |
1268 | ||
0963b4bd | 1269 | /* End the current partial symtab and start a new one. */ |
6a34fd2f | 1270 | |
83b94be5 | 1271 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1272 | |
0963b4bd | 1273 | /* Null name means end of .o file. Don't start a new one. */ |
6a34fd2f EZ |
1274 | if (*namestring == '\000') |
1275 | continue; | |
1276 | ||
1277 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
1278 | The first one is a directory name; the second the file name. | |
1279 | If pst exists, is empty, and has a filename ending in '/', | |
0963b4bd | 1280 | we assume the previous N_SO was a directory name. */ |
6a34fd2f | 1281 | |
0ba1096a KT |
1282 | p = lbasename (namestring); |
1283 | if (p != namestring && *p == '\000') | |
57c22c6c BR |
1284 | { |
1285 | /* Save the directory name SOs locally, then save it into | |
0963b4bd | 1286 | the psymtab when it's created below. */ |
dda83cd7 SM |
1287 | dirname_nso = namestring; |
1288 | continue; | |
57c22c6c | 1289 | } |
6a34fd2f EZ |
1290 | |
1291 | /* Some other compilers (C++ ones in particular) emit useless | |
131fe1bb DE |
1292 | SOs for non-existant .c files. We ignore all subsequent SOs |
1293 | that immediately follow the first. */ | |
6a34fd2f EZ |
1294 | |
1295 | if (!pst) | |
57c22c6c | 1296 | { |
7b249e47 | 1297 | pst = start_psymtab (partial_symtabs, objfile, |
584d0cda TT |
1298 | namestring, |
1299 | unrelocated_addr (valu), | |
939652a5 | 1300 | first_so_symnum * symbol_size); |
57c22c6c BR |
1301 | pst->dirname = dirname_nso; |
1302 | dirname_nso = NULL; | |
1303 | } | |
6a34fd2f EZ |
1304 | continue; |
1305 | } | |
1306 | ||
9ce5d3bb | 1307 | case N_BINCL: |
6a34fd2f EZ |
1308 | { |
1309 | enum language tmp_language; | |
9a619af0 | 1310 | |
6a34fd2f EZ |
1311 | /* Add this bincl to the bincl_list for future EXCLs. No |
1312 | need to save the string; it'll be around until | |
0963b4bd | 1313 | read_dbx_symtab function returns. */ |
6a34fd2f | 1314 | |
83b94be5 | 1315 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1316 | tmp_language = deduce_language_from_filename (namestring); |
1317 | ||
1318 | /* Only change the psymtab's language if we've learned | |
1319 | something useful (eg. tmp_language is not language_unknown). | |
1320 | In addition, to match what start_subfile does, never change | |
1321 | from C++ to C. */ | |
1322 | if (tmp_language != language_unknown | |
1323 | && (tmp_language != language_c | |
1324 | || psymtab_language != language_cplus)) | |
d7f98cce | 1325 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1326 | |
1327 | if (pst == NULL) | |
9ce5d3bb DE |
1328 | { |
1329 | /* FIXME: we should not get here without a PST to work on. | |
1330 | Attempt to recover. */ | |
b98664d3 | 1331 | complaint (_("N_BINCL %s not in entries for " |
3e43a32a | 1332 | "any file, at symtab pos %d"), |
9ce5d3bb DE |
1333 | namestring, symnum); |
1334 | continue; | |
1335 | } | |
bf259e25 | 1336 | bincl_list->emplace_back (namestring, nlist.n_value, pst); |
6a34fd2f | 1337 | |
0963b4bd | 1338 | /* Mark down an include file in the current psymtab. */ |
6a34fd2f EZ |
1339 | |
1340 | goto record_include_file; | |
1341 | } | |
1342 | ||
9ce5d3bb | 1343 | case N_SOL: |
6a34fd2f EZ |
1344 | { |
1345 | enum language tmp_language; | |
6a34fd2f | 1346 | |
0963b4bd | 1347 | /* Mark down an include file in the current psymtab. */ |
83b94be5 | 1348 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1349 | tmp_language = deduce_language_from_filename (namestring); |
1350 | ||
1351 | /* Only change the psymtab's language if we've learned | |
1352 | something useful (eg. tmp_language is not language_unknown). | |
1353 | In addition, to match what start_subfile does, never change | |
1354 | from C++ to C. */ | |
1355 | if (tmp_language != language_unknown | |
1356 | && (tmp_language != language_c | |
1357 | || psymtab_language != language_cplus)) | |
d7f98cce | 1358 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1359 | |
1360 | /* In C++, one may expect the same filename to come round many | |
1361 | times, when code is coming alternately from the main file | |
0963b4bd | 1362 | and from inline functions in other files. So I check to see |
6a34fd2f EZ |
1363 | if this is a file we've seen before -- either the main |
1364 | source file, or a previously included file. | |
1365 | ||
1366 | This seems to be a lot of time to be spending on N_SOL, but | |
1367 | things like "break c-exp.y:435" need to work (I | |
1368 | suppose the psymtab_include_list could be hashed or put | |
1369 | in a binary tree, if profiling shows this is a major hog). */ | |
0ba1096a | 1370 | if (pst && filename_cmp (namestring, pst->filename) == 0) |
9ce5d3bb | 1371 | continue; |
6a34fd2f | 1372 | { |
aa1ee363 | 1373 | int i; |
9a619af0 | 1374 | |
6a34fd2f | 1375 | for (i = 0; i < includes_used; i++) |
0ba1096a | 1376 | if (filename_cmp (namestring, psymtab_include_list[i]) == 0) |
6a34fd2f EZ |
1377 | { |
1378 | i = -1; | |
1379 | break; | |
1380 | } | |
1381 | if (i == -1) | |
1382 | continue; | |
1383 | } | |
1384 | ||
9ce5d3bb | 1385 | record_include_file: |
6a34fd2f EZ |
1386 | |
1387 | psymtab_include_list[includes_used++] = namestring; | |
1388 | if (includes_used >= includes_allocated) | |
9ce5d3bb | 1389 | { |
0d5cff50 | 1390 | const char **orig = psymtab_include_list; |
6a34fd2f | 1391 | |
0d5cff50 DE |
1392 | psymtab_include_list = (const char **) |
1393 | alloca ((includes_allocated *= 2) * sizeof (const char *)); | |
9ce5d3bb | 1394 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 1395 | includes_used * sizeof (const char *)); |
9ce5d3bb | 1396 | } |
6a34fd2f EZ |
1397 | continue; |
1398 | } | |
0963b4bd MS |
1399 | case N_LSYM: /* Typedef or automatic variable. */ |
1400 | case N_STSYM: /* Data seg var -- static. */ | |
9ce5d3bb DE |
1401 | case N_LCSYM: /* BSS " */ |
1402 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
1403 | case N_NBSTS: /* Gould nobase. */ | |
1404 | case N_NBLCS: /* symbols. */ | |
1405 | case N_FUN: | |
1406 | case N_GSYM: /* Global (extern) variable; can be | |
063e58ba | 1407 | data or bss (sigh FIXME). */ |
6a34fd2f EZ |
1408 | |
1409 | /* Following may probably be ignored; I'll leave them here | |
1410 | for now (until I do Pascal and Modula 2 extensions). */ | |
1411 | ||
9ce5d3bb | 1412 | case N_PC: /* I may or may not need this; I |
063e58ba | 1413 | suspect not. */ |
0963b4bd | 1414 | case N_M2C: /* I suspect that I can ignore this here. */ |
9ce5d3bb | 1415 | case N_SCOPE: /* Same. */ |
131fe1bb | 1416 | { |
a121b7c1 | 1417 | const char *p; |
6a34fd2f | 1418 | |
83b94be5 | 1419 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1420 | |
1421 | /* See if this is an end of function stab. */ | |
1422 | if (pst && nlist.n_type == N_FUN && *namestring == '\000') | |
9ce5d3bb | 1423 | { |
584d0cda | 1424 | unrelocated_addr valu; |
9ce5d3bb DE |
1425 | |
1426 | /* It's value is the size (in bytes) of the function for | |
1427 | function relative stabs, or the address of the function's | |
1428 | end for old style stabs. */ | |
584d0cda TT |
1429 | valu = unrelocated_addr (nlist.n_value + last_function_start); |
1430 | if (pst->raw_text_high () == unrelocated_addr (0) | |
1431 | || 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 | |
24b21115 | 1440 | sym_len = 0; |
87bc73ea | 1441 | sym_name = NULL; /* pacify "gcc -Werror" */ |
24b21115 SM |
1442 | if (psymtab_language == language_cplus) |
1443 | { | |
2f408ecb | 1444 | std::string name (namestring, p - namestring); |
596dc4ad TT |
1445 | gdb::unique_xmalloc_ptr<char> new_name |
1446 | = cp_canonicalize_string (name.c_str ()); | |
1447 | if (new_name != nullptr) | |
2f408ecb | 1448 | { |
596dc4ad | 1449 | sym_len = strlen (new_name.get ()); |
efba19b0 | 1450 | sym_name = obstack_strdup (&objfile->objfile_obstack, |
596dc4ad | 1451 | new_name.get ()); |
2f408ecb PA |
1452 | } |
1453 | } | |
55fc1623 TT |
1454 | else if (psymtab_language == language_c) |
1455 | { | |
1456 | std::string name (namestring, p - namestring); | |
1457 | gdb::unique_xmalloc_ptr<char> new_name | |
1458 | = c_canonicalize_name (name.c_str ()); | |
1459 | if (new_name != nullptr) | |
1460 | { | |
1461 | sym_len = strlen (new_name.get ()); | |
1462 | sym_name = obstack_strdup (&objfile->objfile_obstack, | |
1463 | new_name.get ()); | |
1464 | } | |
1465 | } | |
71c25dea | 1466 | |
24b21115 SM |
1467 | if (sym_len == 0) |
1468 | { | |
1469 | sym_name = namestring; | |
1470 | sym_len = p - namestring; | |
1471 | } | |
71c25dea | 1472 | |
6a34fd2f EZ |
1473 | /* Main processing section for debugging symbols which |
1474 | the initial read through the symbol tables needs to worry | |
1475 | about. If we reach this point, the symbol which we are | |
1476 | considering is definitely one we are interested in. | |
1477 | p must also contain the (valid) index into the namestring | |
1478 | which indicates the debugging type symbol. */ | |
1479 | ||
1480 | switch (p[1]) | |
9ce5d3bb DE |
1481 | { |
1482 | case 'S': | |
33612571 AB |
1483 | if (pst != nullptr) |
1484 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), true, | |
1485 | VAR_DOMAIN, LOC_STATIC, | |
1486 | data_sect_index, | |
1487 | psymbol_placement::STATIC, | |
1ee8702d TT |
1488 | unrelocated_addr (nlist.n_value), |
1489 | psymtab_language, | |
33612571 AB |
1490 | partial_symtabs, objfile); |
1491 | else | |
1492 | complaint (_("static `%*s' appears to be defined " | |
1493 | "outside of all compilation units"), | |
1494 | sym_len, sym_name); | |
9ce5d3bb | 1495 | continue; |
131fe1bb | 1496 | |
9ce5d3bb | 1497 | case 'G': |
9ce5d3bb | 1498 | /* The addresses in these entries are reported to be |
0963b4bd | 1499 | wrong. See the code that reads 'G's for symtabs. */ |
33612571 AB |
1500 | if (pst != nullptr) |
1501 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), true, | |
1502 | VAR_DOMAIN, LOC_STATIC, | |
1503 | data_sect_index, | |
1504 | psymbol_placement::GLOBAL, | |
1ee8702d TT |
1505 | unrelocated_addr (nlist.n_value), |
1506 | psymtab_language, | |
33612571 AB |
1507 | partial_symtabs, objfile); |
1508 | else | |
1509 | complaint (_("global `%*s' appears to be defined " | |
1510 | "outside of all compilation units"), | |
1511 | sym_len, sym_name); | |
9ce5d3bb | 1512 | continue; |
6a34fd2f | 1513 | |
9ce5d3bb DE |
1514 | case 'T': |
1515 | /* When a 'T' entry is defining an anonymous enum, it | |
1516 | may have a name which is the empty string, or a | |
1517 | single space. Since they're not really defining a | |
1518 | symbol, those shouldn't go in the partial symbol | |
1519 | table. We do pick up the elements of such enums at | |
1520 | 'check_enum:', below. */ | |
1521 | if (p >= namestring + 2 | |
1522 | || (p == namestring + 1 | |
1523 | && namestring[0] != ' ')) | |
1524 | { | |
33612571 AB |
1525 | if (pst != nullptr) |
1526 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), | |
1527 | true, STRUCT_DOMAIN, LOC_TYPEDEF, -1, | |
1528 | psymbol_placement::STATIC, | |
1ee8702d TT |
1529 | unrelocated_addr (0), |
1530 | psymtab_language, | |
33612571 AB |
1531 | partial_symtabs, objfile); |
1532 | else | |
1533 | complaint (_("enum, struct, or union `%*s' appears " | |
1534 | "to be defined outside of all " | |
1535 | "compilation units"), | |
1536 | sym_len, sym_name); | |
9ce5d3bb DE |
1537 | if (p[2] == 't') |
1538 | { | |
1539 | /* Also a typedef with the same name. */ | |
33612571 AB |
1540 | if (pst != nullptr) |
1541 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), | |
1542 | true, VAR_DOMAIN, LOC_TYPEDEF, -1, | |
1543 | psymbol_placement::STATIC, | |
1ee8702d TT |
1544 | unrelocated_addr (0), |
1545 | psymtab_language, | |
33612571 AB |
1546 | partial_symtabs, objfile); |
1547 | else | |
1548 | complaint (_("typedef `%*s' appears to be defined " | |
1549 | "outside of all compilation units"), | |
1550 | sym_len, sym_name); | |
9ce5d3bb DE |
1551 | p += 1; |
1552 | } | |
1553 | } | |
1554 | goto check_enum; | |
131fe1bb | 1555 | |
9ce5d3bb | 1556 | case 't': |
0963b4bd | 1557 | if (p != namestring) /* a name is there, not just :T... */ |
9ce5d3bb | 1558 | { |
33612571 AB |
1559 | if (pst != nullptr) |
1560 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), | |
1561 | true, VAR_DOMAIN, LOC_TYPEDEF, -1, | |
1562 | psymbol_placement::STATIC, | |
1ee8702d TT |
1563 | unrelocated_addr (0), |
1564 | psymtab_language, | |
33612571 AB |
1565 | partial_symtabs, objfile); |
1566 | else | |
1567 | complaint (_("typename `%*s' appears to be defined " | |
1568 | "outside of all compilation units"), | |
1569 | sym_len, sym_name); | |
9ce5d3bb DE |
1570 | } |
1571 | check_enum: | |
1572 | /* If this is an enumerated type, we need to | |
1573 | add all the enum constants to the partial symbol | |
1574 | table. This does not cover enums without names, e.g. | |
1575 | "enum {a, b} c;" in C, but fortunately those are | |
1576 | rare. There is no way for GDB to find those from the | |
1577 | enum type without spending too much time on it. Thus | |
1578 | to solve this problem, the compiler needs to put out the | |
1579 | enum in a nameless type. GCC2 does this. */ | |
1580 | ||
1581 | /* We are looking for something of the form | |
1582 | <name> ":" ("t" | "T") [<number> "="] "e" | |
1583 | {<constant> ":" <value> ","} ";". */ | |
1584 | ||
1585 | /* Skip over the colon and the 't' or 'T'. */ | |
1586 | p += 2; | |
1587 | /* This type may be given a number. Also, numbers can come | |
1588 | in pairs like (0,26). Skip over it. */ | |
1589 | while ((*p >= '0' && *p <= '9') | |
1590 | || *p == '(' || *p == ',' || *p == ')' | |
1591 | || *p == '=') | |
1592 | p++; | |
1593 | ||
1594 | if (*p++ == 'e') | |
1595 | { | |
1596 | /* The aix4 compiler emits extra crud before the members. */ | |
1597 | if (*p == '-') | |
1598 | { | |
1599 | /* Skip over the type (?). */ | |
1600 | while (*p != ':') | |
1601 | p++; | |
6a34fd2f | 1602 | |
9ce5d3bb | 1603 | /* Skip over the colon. */ |
6a34fd2f | 1604 | p++; |
9ce5d3bb | 1605 | } |
6a34fd2f | 1606 | |
9ce5d3bb DE |
1607 | /* We have found an enumerated type. */ |
1608 | /* According to comments in read_enum_type | |
1609 | a comma could end it instead of a semicolon. | |
1610 | I don't know where that happens. | |
1611 | Accept either. */ | |
1612 | while (*p && *p != ';' && *p != ',') | |
1613 | { | |
a121b7c1 | 1614 | const char *q; |
9ce5d3bb DE |
1615 | |
1616 | /* Check for and handle cretinous dbx symbol name | |
1617 | continuation! */ | |
1618 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
1619 | p = next_symbol_text (objfile); | |
1620 | ||
1621 | /* Point to the character after the name | |
1622 | of the enum constant. */ | |
1623 | for (q = p; *q && *q != ':'; q++) | |
1624 | ; | |
1625 | /* Note that the value doesn't matter for | |
1626 | enum constants in psymtabs, just in symtabs. */ | |
33612571 AB |
1627 | if (pst != nullptr) |
1628 | pst->add_psymbol (gdb::string_view (p, q - p), true, | |
1629 | VAR_DOMAIN, LOC_CONST, -1, | |
1ee8702d TT |
1630 | psymbol_placement::STATIC, |
1631 | unrelocated_addr (0), | |
33612571 AB |
1632 | psymtab_language, |
1633 | partial_symtabs, objfile); | |
1634 | else | |
1635 | complaint (_("enum constant `%*s' appears to be defined " | |
1636 | "outside of all compilation units"), | |
1637 | ((int) (q - p)), p); | |
9ce5d3bb DE |
1638 | /* Point past the name. */ |
1639 | p = q; | |
1640 | /* Skip over the value. */ | |
1641 | while (*p && *p != ',') | |
1642 | p++; | |
1643 | /* Advance past the comma. */ | |
1644 | if (*p) | |
1645 | p++; | |
1646 | } | |
1647 | } | |
1648 | continue; | |
131fe1bb | 1649 | |
9ce5d3bb DE |
1650 | case 'c': |
1651 | /* Constant, e.g. from "const" in Pascal. */ | |
33612571 AB |
1652 | if (pst != nullptr) |
1653 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), true, | |
1654 | VAR_DOMAIN, LOC_CONST, -1, | |
1ee8702d TT |
1655 | psymbol_placement::STATIC, |
1656 | unrelocated_addr (0), | |
33612571 AB |
1657 | psymtab_language, |
1658 | partial_symtabs, objfile); | |
1659 | else | |
1660 | complaint (_("constant `%*s' appears to be defined " | |
1661 | "outside of all compilation units"), | |
1662 | sym_len, sym_name); | |
1663 | ||
9ce5d3bb | 1664 | continue; |
6a34fd2f | 1665 | |
9ce5d3bb DE |
1666 | case 'f': |
1667 | if (! pst) | |
1668 | { | |
9c6c4471 AB |
1669 | std::string name (namestring, (p - namestring)); |
1670 | function_outside_compilation_unit_complaint (name.c_str ()); | |
9ce5d3bb | 1671 | } |
0963b4bd | 1672 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1673 | last_function_name = namestring; |
1674 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1675 | value for the bottom of the text seg in those cases. */ |
79748972 | 1676 | if (nlist.n_value == 0 |
5e2b427d | 1677 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1678 | { |
79748972 TT |
1679 | struct bound_minimal_symbol minsym |
1680 | = find_stab_function (namestring, | |
1681 | pst ? pst->filename : NULL, | |
1682 | objfile); | |
1683 | if (minsym.minsym != NULL) | |
9675da25 TT |
1684 | nlist.n_value |
1685 | = CORE_ADDR (minsym.minsym->value_raw_address ()); | |
9ce5d3bb DE |
1686 | } |
1687 | if (pst && textlow_not_set | |
5e2b427d | 1688 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1689 | { |
584d0cda | 1690 | pst->set_text_low (unrelocated_addr (nlist.n_value)); |
9ce5d3bb DE |
1691 | textlow_not_set = 0; |
1692 | } | |
1693 | /* End kludge. */ | |
1694 | ||
1695 | /* Keep track of the start of the last function so we | |
1696 | can handle end of function symbols. */ | |
1697 | last_function_start = nlist.n_value; | |
1698 | ||
1699 | /* In reordered executables this function may lie outside | |
1700 | the bounds created by N_SO symbols. If that's the case | |
1701 | use the address of this function as the low bound for | |
1702 | the partial symbol table. */ | |
1703 | if (pst | |
1704 | && (textlow_not_set | |
584d0cda TT |
1705 | || (unrelocated_addr (nlist.n_value) |
1706 | < pst->raw_text_low () | |
79748972 | 1707 | && (nlist.n_value != 0)))) |
9ce5d3bb | 1708 | { |
584d0cda | 1709 | pst->set_text_low (unrelocated_addr (nlist.n_value)); |
9ce5d3bb DE |
1710 | textlow_not_set = 0; |
1711 | } | |
33612571 AB |
1712 | if (pst != nullptr) |
1713 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), true, | |
1714 | VAR_DOMAIN, LOC_BLOCK, | |
1715 | SECT_OFF_TEXT (objfile), | |
1716 | psymbol_placement::STATIC, | |
1ee8702d TT |
1717 | unrelocated_addr (nlist.n_value), |
1718 | psymtab_language, | |
33612571 | 1719 | partial_symtabs, objfile); |
9ce5d3bb | 1720 | continue; |
6a34fd2f | 1721 | |
9ce5d3bb DE |
1722 | /* Global functions were ignored here, but now they |
1723 | are put into the global psymtab like one would expect. | |
1724 | They're also in the minimal symbol table. */ | |
1725 | case 'F': | |
1726 | if (! pst) | |
1727 | { | |
9c6c4471 AB |
1728 | std::string name (namestring, (p - namestring)); |
1729 | function_outside_compilation_unit_complaint (name.c_str ()); | |
9ce5d3bb | 1730 | } |
0963b4bd | 1731 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1732 | last_function_name = namestring; |
1733 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1734 | value for the bottom of the text seg in those cases. */ |
79748972 | 1735 | if (nlist.n_value == 0 |
5e2b427d | 1736 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1737 | { |
79748972 TT |
1738 | struct bound_minimal_symbol minsym |
1739 | = find_stab_function (namestring, | |
1740 | pst ? pst->filename : NULL, | |
1741 | objfile); | |
1742 | if (minsym.minsym != NULL) | |
9675da25 TT |
1743 | nlist.n_value |
1744 | = CORE_ADDR (minsym.minsym->value_raw_address ()); | |
9ce5d3bb DE |
1745 | } |
1746 | if (pst && textlow_not_set | |
5e2b427d | 1747 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1748 | { |
584d0cda | 1749 | pst->set_text_low (unrelocated_addr (nlist.n_value)); |
9ce5d3bb DE |
1750 | textlow_not_set = 0; |
1751 | } | |
1752 | /* End kludge. */ | |
1753 | ||
1754 | /* Keep track of the start of the last function so we | |
1755 | can handle end of function symbols. */ | |
1756 | last_function_start = nlist.n_value; | |
1757 | ||
1758 | /* In reordered executables this function may lie outside | |
1759 | the bounds created by N_SO symbols. If that's the case | |
1760 | use the address of this function as the low bound for | |
1761 | the partial symbol table. */ | |
1762 | if (pst | |
1763 | && (textlow_not_set | |
584d0cda TT |
1764 | || (unrelocated_addr (nlist.n_value) |
1765 | < pst->raw_text_low () | |
79748972 | 1766 | && (nlist.n_value != 0)))) |
9ce5d3bb | 1767 | { |
584d0cda | 1768 | pst->set_text_low (unrelocated_addr (nlist.n_value)); |
9ce5d3bb DE |
1769 | textlow_not_set = 0; |
1770 | } | |
33612571 AB |
1771 | if (pst != nullptr) |
1772 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), true, | |
1773 | VAR_DOMAIN, LOC_BLOCK, | |
1774 | SECT_OFF_TEXT (objfile), | |
1775 | psymbol_placement::GLOBAL, | |
1ee8702d TT |
1776 | unrelocated_addr (nlist.n_value), |
1777 | psymtab_language, | |
33612571 | 1778 | partial_symtabs, objfile); |
9ce5d3bb | 1779 | continue; |
6a34fd2f | 1780 | |
9ce5d3bb DE |
1781 | /* Two things show up here (hopefully); static symbols of |
1782 | local scope (static used inside braces) or extensions | |
1783 | of structure symbols. We can ignore both. */ | |
1784 | case 'V': | |
1785 | case '(': | |
1786 | case '0': | |
1787 | case '1': | |
1788 | case '2': | |
1789 | case '3': | |
1790 | case '4': | |
1791 | case '5': | |
1792 | case '6': | |
1793 | case '7': | |
1794 | case '8': | |
1795 | case '9': | |
1796 | case '-': | |
0963b4bd | 1797 | case '#': /* For symbol identification (used in live ranges). */ |
9ce5d3bb | 1798 | continue; |
6a34fd2f | 1799 | |
9ce5d3bb DE |
1800 | case ':': |
1801 | /* It is a C++ nested symbol. We don't need to record it | |
1802 | (I don't think); if we try to look up foo::bar::baz, | |
1803 | then symbols for the symtab containing foo should get | |
1804 | read in, I think. */ | |
1805 | /* Someone says sun cc puts out symbols like | |
1806 | /foo/baz/maclib::/usr/local/bin/maclib, | |
1807 | which would get here with a symbol type of ':'. */ | |
1808 | continue; | |
6a34fd2f | 1809 | |
9ce5d3bb DE |
1810 | default: |
1811 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
1812 | of a continued stab can show up here. The question is | |
1813 | whether they ever can mimic a normal stab--it would be | |
1814 | nice if not, since we certainly don't want to spend the | |
1815 | time searching to the end of every string looking for | |
1816 | a backslash. */ | |
6a34fd2f | 1817 | |
b98664d3 | 1818 | complaint (_("unknown symbol descriptor `%c'"), |
9ce5d3bb DE |
1819 | p[1]); |
1820 | ||
1821 | /* Ignore it; perhaps it is an extension that we don't | |
1822 | know about. */ | |
1823 | continue; | |
1824 | } | |
131fe1bb | 1825 | } |
6a34fd2f | 1826 | |
9ce5d3bb | 1827 | case N_EXCL: |
6a34fd2f | 1828 | |
83b94be5 | 1829 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1830 | |
1831 | /* Find the corresponding bincl and mark that psymtab on the | |
0963b4bd | 1832 | psymtab dependency list. */ |
6a34fd2f | 1833 | { |
891813be | 1834 | legacy_psymtab *needed_pst = |
6a34fd2f EZ |
1835 | find_corresponding_bincl_psymtab (namestring, nlist.n_value); |
1836 | ||
1837 | /* If this include file was defined earlier in this file, | |
1838 | leave it alone. */ | |
1839 | if (needed_pst == pst) | |
1840 | continue; | |
1841 | ||
1842 | if (needed_pst) | |
1843 | { | |
1844 | int i; | |
1845 | int found = 0; | |
1846 | ||
1847 | for (i = 0; i < dependencies_used; i++) | |
1848 | if (dependency_list[i] == needed_pst) | |
1849 | { | |
1850 | found = 1; | |
1851 | break; | |
1852 | } | |
1853 | ||
1854 | /* If it's already in the list, skip the rest. */ | |
1855 | if (found) | |
1856 | continue; | |
1857 | ||
1858 | dependency_list[dependencies_used++] = needed_pst; | |
1859 | if (dependencies_used >= dependencies_allocated) | |
1860 | { | |
891813be | 1861 | legacy_psymtab **orig = dependency_list; |
9a619af0 | 1862 | |
6a34fd2f | 1863 | dependency_list = |
891813be | 1864 | (legacy_psymtab **) |
6a34fd2f | 1865 | alloca ((dependencies_allocated *= 2) |
891813be | 1866 | * sizeof (legacy_psymtab *)); |
4efb68b1 | 1867 | memcpy (dependency_list, orig, |
6a34fd2f | 1868 | (dependencies_used |
891813be | 1869 | * sizeof (legacy_psymtab *))); |
6a34fd2f | 1870 | #ifdef DEBUG_INFO |
6cb06a8c TT |
1871 | gdb_printf (gdb_stderr, |
1872 | "Had to reallocate " | |
1873 | "dependency list.\n"); | |
1874 | gdb_printf (gdb_stderr, | |
1875 | "New dependencies allocated: %d\n", | |
1876 | dependencies_allocated); | |
6a34fd2f EZ |
1877 | #endif |
1878 | } | |
1879 | } | |
1880 | } | |
1881 | continue; | |
1882 | ||
9ce5d3bb | 1883 | case N_ENDM: |
4ae976d1 TT |
1884 | /* Solaris 2 end of module, finish current partial symbol |
1885 | table. dbx_end_psymtab will set the high text address of | |
1886 | PST to the proper value, which is necessary if a module | |
1887 | compiled without debugging info follows this module. */ | |
5e2b427d | 1888 | if (pst && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1889 | { |
7e9c0476 | 1890 | dbx_end_psymtab (objfile, partial_symtabs, pst, |
8763cede DE |
1891 | psymtab_include_list, includes_used, |
1892 | symnum * symbol_size, | |
584d0cda | 1893 | (unrelocated_addr) 0, dependency_list, |
8763cede | 1894 | dependencies_used, textlow_not_set); |
891813be | 1895 | pst = (legacy_psymtab *) 0; |
9ce5d3bb DE |
1896 | includes_used = 0; |
1897 | dependencies_used = 0; | |
578933ab | 1898 | has_line_numbers = 0; |
9ce5d3bb | 1899 | } |
6a34fd2f | 1900 | continue; |
c906108c | 1901 | |
9ce5d3bb | 1902 | case N_RBRAC: |
6a34fd2f EZ |
1903 | #ifdef HANDLE_RBRAC |
1904 | HANDLE_RBRAC (nlist.n_value); | |
1905 | continue; | |
1906 | #endif | |
9ce5d3bb DE |
1907 | case N_EINCL: |
1908 | case N_DSLINE: | |
1909 | case N_BSLINE: | |
1910 | case N_SSYM: /* Claim: Structure or union element. | |
063e58ba | 1911 | Hopefully, I can ignore this. */ |
0963b4bd | 1912 | case N_ENTRY: /* Alternate entry point; can ignore. */ |
9ce5d3bb DE |
1913 | case N_MAIN: /* Can definitely ignore this. */ |
1914 | case N_CATCH: /* These are GNU C++ extensions */ | |
0963b4bd | 1915 | case N_EHDECL: /* that can safely be ignored here. */ |
9ce5d3bb DE |
1916 | case N_LENG: |
1917 | case N_BCOMM: | |
1918 | case N_ECOMM: | |
1919 | case N_ECOML: | |
1920 | case N_FNAME: | |
1921 | case N_SLINE: | |
1922 | case N_RSYM: | |
1923 | case N_PSYM: | |
ec48dc8b PM |
1924 | case N_BNSYM: |
1925 | case N_ENSYM: | |
9ce5d3bb DE |
1926 | case N_LBRAC: |
1927 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
1928 | case N_DEFD: /* GNU Modula-2 */ | |
1929 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
1930 | ||
0963b4bd | 1931 | case N_OBJ: /* Useless types from Solaris. */ |
9ce5d3bb DE |
1932 | case N_OPT: |
1933 | case N_PATCH: | |
0963b4bd | 1934 | /* These symbols aren't interesting; don't worry about them. */ |
6a34fd2f EZ |
1935 | continue; |
1936 | ||
9ce5d3bb | 1937 | default: |
6a34fd2f EZ |
1938 | /* If we haven't found it yet, ignore it. It's probably some |
1939 | new type we don't know about yet. */ | |
bb599908 | 1940 | unknown_symtype_complaint (hex_string (nlist.n_type)); |
6a34fd2f EZ |
1941 | continue; |
1942 | } | |
c906108c SS |
1943 | } |
1944 | ||
1945 | /* If there's stuff to be cleaned up, clean it up. */ | |
c906108c SS |
1946 | if (pst) |
1947 | { | |
4ae976d1 TT |
1948 | /* Don't set high text address of PST lower than it already |
1949 | is. */ | |
584d0cda | 1950 | unrelocated_addr text_end |
9675da25 TT |
1951 | = (unrelocated_addr |
1952 | (lowest_text_address == (unrelocated_addr) -1 | |
1953 | ? text_addr | |
1954 | : CORE_ADDR (lowest_text_address) | |
1955 | + text_size)); | |
c906108c | 1956 | |
7e9c0476 TT |
1957 | dbx_end_psymtab (objfile, partial_symtabs, |
1958 | pst, psymtab_include_list, includes_used, | |
8763cede | 1959 | symnum * symbol_size, |
79748972 TT |
1960 | (text_end > pst->raw_text_high () |
1961 | ? text_end : pst->raw_text_high ()), | |
8763cede | 1962 | dependency_list, dependencies_used, textlow_not_set); |
c906108c | 1963 | } |
c906108c SS |
1964 | } |
1965 | ||
1966 | /* Allocate and partially fill a partial symtab. It will be | |
1967 | completely filled at the end of the symbol list. | |
1968 | ||
1969 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1970 | is the address relative to which its symbols are (incremental) or 0 | |
0963b4bd | 1971 | (normal). */ |
c906108c | 1972 | |
891813be | 1973 | static legacy_psymtab * |
7b249e47 | 1974 | start_psymtab (psymtab_storage *partial_symtabs, struct objfile *objfile, |
584d0cda | 1975 | const char *filename, unrelocated_addr textlow, int ldsymoff) |
c906108c | 1976 | { |
7b249e47 | 1977 | legacy_psymtab *result = new legacy_psymtab (filename, partial_symtabs, |
0072c873 | 1978 | objfile->per_bfd, textlow); |
c906108c | 1979 | |
8d749320 SM |
1980 | result->read_symtab_private = |
1981 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 1982 | LDSYMOFF (result) = ldsymoff; |
891813be | 1983 | result->legacy_read_symtab = dbx_read_symtab; |
69b037c3 | 1984 | result->legacy_expand_psymtab = dbx_expand_psymtab; |
c5aa993b JM |
1985 | SYMBOL_SIZE (result) = symbol_size; |
1986 | SYMBOL_OFFSET (result) = symbol_table_offset; | |
1987 | STRING_OFFSET (result) = string_table_offset; | |
1988 | FILE_STRING_OFFSET (result) = file_string_table_offset; | |
c906108c | 1989 | |
0963b4bd | 1990 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c | 1991 | psymtab_language = deduce_language_from_filename (filename); |
5ffa0793 | 1992 | PST_LANGUAGE (result) = psymtab_language; |
c906108c SS |
1993 | |
1994 | return result; | |
1995 | } | |
1996 | ||
0963b4bd | 1997 | /* Close off the current usage of PST. |
c906108c SS |
1998 | Returns PST or NULL if the partial symtab was empty and thrown away. |
1999 | ||
2000 | FIXME: List variables and peculiarities of same. */ | |
2001 | ||
891813be | 2002 | legacy_psymtab * |
7e9c0476 TT |
2003 | dbx_end_psymtab (struct objfile *objfile, psymtab_storage *partial_symtabs, |
2004 | legacy_psymtab *pst, | |
8763cede | 2005 | const char **include_list, int num_includes, |
584d0cda | 2006 | int capping_symbol_offset, unrelocated_addr capping_text, |
891813be | 2007 | legacy_psymtab **dependency_list, |
8763cede DE |
2008 | int number_dependencies, |
2009 | int textlow_not_set) | |
c906108c SS |
2010 | { |
2011 | int i; | |
08feed99 | 2012 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
2013 | |
2014 | if (capping_symbol_offset != -1) | |
c5aa993b | 2015 | LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst); |
4ae976d1 | 2016 | pst->set_text_high (capping_text); |
c906108c | 2017 | |
c906108c SS |
2018 | /* Under Solaris, the N_SO symbols always have a value of 0, |
2019 | instead of the usual address of the .o file. Therefore, | |
2020 | we have to do some tricks to fill in texthigh and textlow. | |
6a34fd2f | 2021 | The first trick is: if we see a static |
c906108c SS |
2022 | or global function, and the textlow for the current pst |
2023 | is not set (ie: textlow_not_set), then we use that function's | |
2024 | address for the textlow of the pst. */ | |
2025 | ||
2026 | /* Now, to fill in texthigh, we remember the last function seen | |
6a34fd2f | 2027 | in the .o file. Also, there's a hack in |
c906108c SS |
2028 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field |
2029 | to here via the misc_info field. Therefore, we can fill in | |
2030 | a reliable texthigh by taking the address plus size of the | |
2031 | last function in the file. */ | |
2032 | ||
52948f01 | 2033 | if (!pst->text_high_valid && last_function_name |
5e2b427d | 2034 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
c906108c | 2035 | { |
c906108c | 2036 | int n; |
3b7344d5 | 2037 | struct bound_minimal_symbol minsym; |
c906108c | 2038 | |
a121b7c1 PA |
2039 | const char *colon = strchr (last_function_name, ':'); |
2040 | if (colon == NULL) | |
2041 | n = 0; | |
2042 | else | |
2043 | n = colon - last_function_name; | |
2044 | char *p = (char *) alloca (n + 2); | |
c906108c SS |
2045 | strncpy (p, last_function_name, n); |
2046 | p[n] = 0; | |
c5aa993b | 2047 | |
c906108c | 2048 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
3b7344d5 | 2049 | if (minsym.minsym == NULL) |
c906108c SS |
2050 | { |
2051 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
2052 | try again with an appended underscore if the minimal symbol | |
2053 | was not found. */ | |
2054 | p[n] = '_'; | |
2055 | p[n + 1] = 0; | |
2056 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); | |
2057 | } | |
2058 | ||
3b7344d5 | 2059 | if (minsym.minsym) |
584d0cda | 2060 | pst->set_text_high |
9675da25 | 2061 | (unrelocated_addr (CORE_ADDR (minsym.minsym->value_raw_address ()) |
584d0cda | 2062 | + minsym.minsym->size ())); |
c906108c SS |
2063 | |
2064 | last_function_name = NULL; | |
2065 | } | |
2066 | ||
5e2b427d | 2067 | if (!gdbarch_sofun_address_maybe_missing (gdbarch)) |
203c3895 | 2068 | ; |
0963b4bd | 2069 | /* This test will be true if the last .o file is only data. */ |
203c3895 | 2070 | else if (textlow_not_set) |
79748972 | 2071 | pst->set_text_low (pst->raw_text_high ()); |
c906108c SS |
2072 | else |
2073 | { | |
c906108c | 2074 | /* If we know our own starting text address, then walk through all other |
dda83cd7 SM |
2075 | psymtabs for this objfile, and if any didn't know their ending text |
2076 | address, set it to our starting address. Take care to not set our | |
2077 | own ending address to our starting address. */ | |
c906108c | 2078 | |
7e9c0476 | 2079 | for (partial_symtab *p1 : partial_symtabs->range ()) |
52948f01 | 2080 | if (!p1->text_high_valid && p1->text_low_valid && p1 != pst) |
79748972 | 2081 | p1->set_text_high (pst->raw_text_low ()); |
c906108c SS |
2082 | } |
2083 | ||
2084 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
c906108c | 2085 | |
ae7754b2 | 2086 | pst->end (); |
c906108c SS |
2087 | |
2088 | pst->number_of_dependencies = number_dependencies; | |
2089 | if (number_dependencies) | |
2090 | { | |
a9342b62 | 2091 | pst->dependencies |
7e9c0476 | 2092 | = partial_symtabs->allocate_dependencies (number_dependencies); |
c906108c | 2093 | memcpy (pst->dependencies, dependency_list, |
891813be | 2094 | number_dependencies * sizeof (legacy_psymtab *)); |
c906108c SS |
2095 | } |
2096 | else | |
2097 | pst->dependencies = 0; | |
2098 | ||
2099 | for (i = 0; i < num_includes; i++) | |
2100 | { | |
891813be | 2101 | legacy_psymtab *subpst = |
0072c873 | 2102 | new legacy_psymtab (include_list[i], partial_symtabs, objfile->per_bfd); |
c906108c | 2103 | |
c906108c | 2104 | subpst->read_symtab_private = |
8d749320 | 2105 | XOBNEW (&objfile->objfile_obstack, struct symloc); |
c5aa993b | 2106 | LDSYMOFF (subpst) = |
4ae976d1 | 2107 | LDSYMLEN (subpst) = 0; |
c906108c SS |
2108 | |
2109 | /* We could save slight bits of space by only making one of these, | |
dda83cd7 | 2110 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 | 2111 | subpst->dependencies = |
7e9c0476 | 2112 | partial_symtabs->allocate_dependencies (1); |
c906108c SS |
2113 | subpst->dependencies[0] = pst; |
2114 | subpst->number_of_dependencies = 1; | |
2115 | ||
891813be | 2116 | subpst->legacy_read_symtab = pst->legacy_read_symtab; |
8566b89b | 2117 | subpst->legacy_expand_psymtab = pst->legacy_expand_psymtab; |
c906108c SS |
2118 | } |
2119 | ||
c906108c SS |
2120 | if (num_includes == 0 |
2121 | && number_dependencies == 0 | |
932539d7 | 2122 | && pst->empty () |
c906108c SS |
2123 | && has_line_numbers == 0) |
2124 | { | |
e0814aae | 2125 | /* Throw away this psymtab, it's empty. */ |
c906108c | 2126 | /* Empty psymtabs happen as a result of header files which don't have |
dda83cd7 SM |
2127 | any symbols in them. There can be a lot of them. But this check |
2128 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
2129 | is not empty, but we don't realize that. Fixing that without slowing | |
2130 | things down might be tricky. */ | |
c906108c | 2131 | |
7e9c0476 | 2132 | partial_symtabs->discard_psymtab (pst); |
c906108c SS |
2133 | |
2134 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2135 | pst = NULL; |
c906108c SS |
2136 | } |
2137 | return pst; | |
2138 | } | |
2139 | \f | |
2140 | static void | |
69b037c3 | 2141 | dbx_expand_psymtab (legacy_psymtab *pst, struct objfile *objfile) |
c906108c | 2142 | { |
0494dbec | 2143 | gdb_assert (!pst->readin); |
c906108c | 2144 | |
0963b4bd | 2145 | /* Read in all partial symtabs on which this one is dependent. */ |
48993951 | 2146 | pst->expand_dependencies (objfile); |
c906108c | 2147 | |
0963b4bd | 2148 | if (LDSYMLEN (pst)) /* Otherwise it's a dummy. */ |
c906108c SS |
2149 | { |
2150 | /* Init stuff necessary for reading in symbols */ | |
2151 | stabsread_init (); | |
33c7c59d | 2152 | scoped_free_pendings free_pending; |
c906108c SS |
2153 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
2154 | symbol_size = SYMBOL_SIZE (pst); | |
2155 | ||
0963b4bd | 2156 | /* Read in this file's symbols. */ |
98badbfd | 2157 | bfd_seek (objfile->obfd.get (), SYMBOL_OFFSET (pst), SEEK_SET); |
5c80ed9d | 2158 | read_ofile_symtab (objfile, pst); |
c906108c SS |
2159 | } |
2160 | ||
6d94535f | 2161 | pst->readin = true; |
c906108c SS |
2162 | } |
2163 | ||
2164 | /* Read in all of the symbols for a given psymtab for real. | |
257e7a09 | 2165 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
2166 | |
2167 | static void | |
891813be | 2168 | dbx_read_symtab (legacy_psymtab *self, struct objfile *objfile) |
c906108c | 2169 | { |
077cbab2 | 2170 | gdb_assert (!self->readin); |
c906108c | 2171 | |
257e7a09 | 2172 | if (LDSYMLEN (self) || self->number_of_dependencies) |
c906108c | 2173 | { |
c906108c SS |
2174 | next_symbol_text_func = dbx_next_symbol_text; |
2175 | ||
bf259e25 TT |
2176 | { |
2177 | scoped_restore restore_stabs_data = make_scoped_restore (&stabs_data); | |
2178 | gdb::unique_xmalloc_ptr<gdb_byte> data_holder; | |
2179 | if (DBX_STAB_SECTION (objfile)) | |
2180 | { | |
2181 | stabs_data | |
2182 | = symfile_relocate_debug_section (objfile, | |
2183 | DBX_STAB_SECTION (objfile), | |
2184 | NULL); | |
2185 | data_holder.reset (stabs_data); | |
2186 | } | |
c906108c | 2187 | |
8566b89b | 2188 | self->expand_psymtab (objfile); |
bf259e25 | 2189 | } |
086df311 | 2190 | |
c906108c | 2191 | /* Match with global symbols. This only needs to be done once, |
dda83cd7 | 2192 | after all of the symtabs and dependencies have been read in. */ |
5c80ed9d | 2193 | scan_file_globals (objfile); |
c906108c SS |
2194 | } |
2195 | } | |
2196 | ||
0963b4bd | 2197 | /* Read in a defined section of a specific object file's symbols. */ |
c5aa993b | 2198 | |
c906108c | 2199 | static void |
891813be | 2200 | read_ofile_symtab (struct objfile *objfile, legacy_psymtab *pst) |
c906108c | 2201 | { |
a121b7c1 | 2202 | const char *namestring; |
52f0bd74 | 2203 | struct external_nlist *bufp; |
c906108c SS |
2204 | struct internal_nlist nlist; |
2205 | unsigned char type; | |
2206 | unsigned max_symnum; | |
52f0bd74 | 2207 | bfd *abfd; |
c906108c SS |
2208 | int sym_offset; /* Offset to start of symbols to read */ |
2209 | int sym_size; /* Size of symbols to read */ | |
2210 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
2211 | int text_size; /* Size of text segment for symbols */ | |
c906108c | 2212 | |
c5aa993b JM |
2213 | sym_offset = LDSYMOFF (pst); |
2214 | sym_size = LDSYMLEN (pst); | |
79748972 TT |
2215 | text_offset = pst->text_low (objfile); |
2216 | text_size = pst->text_high (objfile) - pst->text_low (objfile); | |
6a053cb1 | 2217 | const section_offsets §ion_offsets = objfile->section_offsets; |
c906108c | 2218 | |
dd707e8e | 2219 | dbxread_objfile = objfile; |
c906108c SS |
2220 | |
2221 | stringtab_global = DBX_STRINGTAB (objfile); | |
46212e0b | 2222 | set_last_source_file (NULL); |
c906108c | 2223 | |
98badbfd TT |
2224 | abfd = objfile->obfd.get (); |
2225 | symfile_bfd = objfile->obfd.get (); /* Implicit param to next_text_symbol. */ | |
c906108c | 2226 | symbuf_end = symbuf_idx = 0; |
086df311 DJ |
2227 | symbuf_read = 0; |
2228 | symbuf_left = sym_offset + sym_size; | |
c906108c SS |
2229 | |
2230 | /* It is necessary to actually read one symbol *before* the start | |
2231 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
2232 | occurs before the N_SO symbol. | |
2233 | ||
2234 | Detecting this in read_dbx_symtab | |
2235 | would slow down initial readin, so we look for it here instead. */ | |
c5aa993b | 2236 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c | 2237 | { |
086df311 | 2238 | stabs_seek (sym_offset - symbol_size); |
c906108c SS |
2239 | fill_symbuf (abfd); |
2240 | bufp = &symbuf[symbuf_idx++]; | |
2241 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2242 | OBJSTAT (objfile, n_stabs++); | |
2243 | ||
83b94be5 | 2244 | namestring = set_namestring (objfile, &nlist); |
c906108c SS |
2245 | |
2246 | processing_gcc_compilation = 0; | |
2247 | if (nlist.n_type == N_TEXT) | |
2248 | { | |
2249 | const char *tempstring = namestring; | |
2250 | ||
91f54576 | 2251 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2252 | processing_gcc_compilation = 1; |
91f54576 | 2253 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2254 | processing_gcc_compilation = 2; |
2255 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) | |
2256 | ++tempstring; | |
61012eef | 2257 | if (startswith (tempstring, "__gnu_compiled")) |
c906108c SS |
2258 | processing_gcc_compilation = 2; |
2259 | } | |
c906108c SS |
2260 | } |
2261 | else | |
2262 | { | |
2263 | /* The N_SO starting this symtab is the first symbol, so we | |
dda83cd7 SM |
2264 | better not check the symbol before it. I'm not this can |
2265 | happen, but it doesn't hurt to check for it. */ | |
086df311 | 2266 | stabs_seek (sym_offset); |
c906108c SS |
2267 | processing_gcc_compilation = 0; |
2268 | } | |
2269 | ||
2270 | if (symbuf_idx == symbuf_end) | |
2271 | fill_symbuf (abfd); | |
2272 | bufp = &symbuf[symbuf_idx]; | |
2273 | if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO) | |
8a3fe4f8 | 2274 | error (_("First symbol in segment of executable not a source symbol")); |
c906108c SS |
2275 | |
2276 | max_symnum = sym_size / symbol_size; | |
2277 | ||
2278 | for (symnum = 0; | |
2279 | symnum < max_symnum; | |
2280 | symnum++) | |
2281 | { | |
0963b4bd | 2282 | QUIT; /* Allow this to be interruptable. */ |
c906108c | 2283 | if (symbuf_idx == symbuf_end) |
c5aa993b | 2284 | fill_symbuf (abfd); |
c906108c SS |
2285 | bufp = &symbuf[symbuf_idx++]; |
2286 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2287 | OBJSTAT (objfile, n_stabs++); | |
2288 | ||
2289 | type = bfd_h_get_8 (abfd, bufp->e_type); | |
2290 | ||
83b94be5 | 2291 | namestring = set_namestring (objfile, &nlist); |
c906108c | 2292 | |
c5aa993b JM |
2293 | if (type & N_STAB) |
2294 | { | |
7b1f21e5 PP |
2295 | if (sizeof (nlist.n_value) > 4 |
2296 | /* We are a 64-bit debugger debugging a 32-bit program. */ | |
2297 | && (type == N_LSYM || type == N_PSYM)) | |
2298 | /* We have to be careful with the n_value in the case of N_LSYM | |
2299 | and N_PSYM entries, because they are signed offsets from frame | |
2300 | pointer, but we actually read them as unsigned 32-bit values. | |
2301 | This is not a problem for 32-bit debuggers, for which negative | |
2302 | values end up being interpreted correctly (as negative | |
2303 | offsets) due to integer overflow. | |
2304 | But we need to sign-extend the value for 64-bit debuggers, | |
2305 | or we'll end up interpreting negative values as very large | |
2306 | positive offsets. */ | |
2307 | nlist.n_value = (nlist.n_value ^ 0x80000000) - 0x80000000; | |
c906108c | 2308 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
5ffa0793 PA |
2309 | namestring, section_offsets, objfile, |
2310 | PST_LANGUAGE (pst)); | |
c5aa993b | 2311 | } |
c906108c | 2312 | /* We skip checking for a new .o or -l file; that should never |
dda83cd7 | 2313 | happen in this routine. */ |
c906108c SS |
2314 | else if (type == N_TEXT) |
2315 | { | |
2316 | /* I don't think this code will ever be executed, because | |
2317 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
2318 | the N_SO symbol which starts this source file. | |
2319 | However, there is no reason not to accept | |
2320 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
2321 | ||
91f54576 | 2322 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2323 | processing_gcc_compilation = 1; |
91f54576 | 2324 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2325 | processing_gcc_compilation = 2; |
c906108c | 2326 | } |
c5aa993b | 2327 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
9a619af0 | 2328 | || type == (unsigned char) N_NBTEXT) |
c5aa993b | 2329 | { |
85102364 | 2330 | /* Global symbol: see if we came across a dbx definition for |
c906108c SS |
2331 | a corresponding symbol. If so, store the value. Remove |
2332 | syms from the chain when their values are stored, but | |
2333 | search the whole chain, as there may be several syms from | |
0963b4bd | 2334 | different files with the same name. */ |
c906108c SS |
2335 | /* This is probably not true. Since the files will be read |
2336 | in one at a time, each reference to a global symbol will | |
0963b4bd MS |
2337 | be satisfied in each file as it appears. So we skip this |
2338 | section. */ | |
c906108c | 2339 | ; |
c5aa993b | 2340 | } |
c906108c SS |
2341 | } |
2342 | ||
4ae976d1 TT |
2343 | /* In a Solaris elf file, this variable, which comes from the value |
2344 | of the N_SO symbol, will still be 0. Luckily, text_offset, which | |
2345 | comes from low text address of PST, is correct. */ | |
2c99ee5c TT |
2346 | if (get_last_source_start_addr () == 0) |
2347 | set_last_source_start_addr (text_offset); | |
c906108c SS |
2348 | |
2349 | /* In reordered executables last_source_start_addr may not be the | |
2350 | lower bound for this symtab, instead use text_offset which comes | |
4ae976d1 | 2351 | from the low text address of PST, which is correct. */ |
2c99ee5c TT |
2352 | if (get_last_source_start_addr () > text_offset) |
2353 | set_last_source_start_addr (text_offset); | |
c906108c | 2354 | |
83bad316 | 2355 | pst->compunit_symtab = end_compunit_symtab (text_offset + text_size); |
c906108c | 2356 | |
c906108c | 2357 | end_stabs (); |
e9112110 | 2358 | |
dd707e8e | 2359 | dbxread_objfile = NULL; |
c906108c | 2360 | } |
c906108c | 2361 | \f |
c5aa993b | 2362 | |
195a3f6c TT |
2363 | /* Record the namespace that the function defined by SYMBOL was |
2364 | defined in, if necessary. BLOCK is the associated block; use | |
2365 | OBSTACK for allocation. */ | |
2366 | ||
2367 | static void | |
2368 | cp_set_block_scope (const struct symbol *symbol, | |
2369 | struct block *block, | |
2370 | struct obstack *obstack) | |
2371 | { | |
987012b8 | 2372 | if (symbol->demangled_name () != NULL) |
195a3f6c TT |
2373 | { |
2374 | /* Try to figure out the appropriate namespace from the | |
2375 | demangled name. */ | |
2376 | ||
2377 | /* FIXME: carlton/2003-04-15: If the function in question is | |
2378 | a method of a class, the name will actually include the | |
2379 | name of the class as well. This should be harmless, but | |
2380 | is a little unfortunate. */ | |
2381 | ||
987012b8 | 2382 | const char *name = symbol->demangled_name (); |
195a3f6c TT |
2383 | unsigned int prefix_len = cp_entire_prefix_len (name); |
2384 | ||
3c45e9f9 TT |
2385 | block->set_scope (obstack_strndup (obstack, name, prefix_len), |
2386 | obstack); | |
195a3f6c TT |
2387 | } |
2388 | } | |
2389 | ||
c906108c SS |
2390 | /* This handles a single symbol from the symbol-file, building symbols |
2391 | into a GDB symtab. It takes these arguments and an implicit argument. | |
2392 | ||
2393 | TYPE is the type field of the ".stab" symbol entry. | |
2394 | DESC is the desc field of the ".stab" entry. | |
2395 | VALU is the value field of the ".stab" entry. | |
2396 | NAME is the symbol name, in our address space. | |
e31272c3 MK |
2397 | SECTION_OFFSETS is a set of amounts by which the sections of this |
2398 | object file were relocated when it was loaded into memory. Note | |
2399 | that these section_offsets are not the objfile->section_offsets but | |
2400 | the pst->section_offsets. All symbols that refer to memory | |
2401 | locations need to be offset by these amounts. | |
2402 | OBJFILE is the object file from which we are reading symbols. It | |
59dfe8ad | 2403 | is used in end_compunit_symtab. |
5ffa0793 PA |
2404 | LANGUAGE is the language of the symtab. |
2405 | */ | |
c906108c SS |
2406 | |
2407 | void | |
a121b7c1 | 2408 | process_one_symbol (int type, int desc, CORE_ADDR valu, const char *name, |
6a053cb1 | 2409 | const section_offsets §ion_offsets, |
5ffa0793 | 2410 | struct objfile *objfile, enum language language) |
c906108c | 2411 | { |
08feed99 | 2412 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 2413 | struct context_stack *newobj; |
a60f3166 | 2414 | struct context_stack cstk; |
e31272c3 MK |
2415 | /* This remembers the address of the start of a function. It is |
2416 | used because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries | |
2417 | are relative to the current function's start address. On systems | |
2418 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, | |
2419 | and is used to relocate these symbol types rather than | |
2420 | SECTION_OFFSETS. */ | |
c906108c SS |
2421 | static CORE_ADDR function_start_offset; |
2422 | ||
e31272c3 MK |
2423 | /* This holds the address of the start of a function, without the |
2424 | system peculiarities of function_start_offset. */ | |
a1b9830c DJ |
2425 | static CORE_ADDR last_function_start; |
2426 | ||
54c7009d EZ |
2427 | /* If this is nonzero, we've seen an N_SLINE since the start of the |
2428 | current function. We use this to tell us to move the first sline | |
2429 | to the beginning of the function regardless of what its given | |
0963b4bd | 2430 | value is. */ |
a1b9830c DJ |
2431 | static int sline_found_in_function = 1; |
2432 | ||
e31272c3 MK |
2433 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this |
2434 | source file. Used to detect the SunPRO solaris compiler. */ | |
c906108c SS |
2435 | static int n_opt_found; |
2436 | ||
b8a6e987 TT |
2437 | /* The section index for this symbol. */ |
2438 | int section_index = -1; | |
2439 | ||
e31272c3 MK |
2440 | /* Something is wrong if we see real data before seeing a source |
2441 | file name. */ | |
c906108c | 2442 | |
46212e0b | 2443 | if (get_last_source_file () == NULL && type != (unsigned char) N_SO) |
c906108c SS |
2444 | { |
2445 | /* Ignore any symbols which appear before an N_SO symbol. | |
dda83cd7 SM |
2446 | Currently no one puts symbols there, but we should deal |
2447 | gracefully with the case. A complain()t might be in order, | |
2448 | but this should not be an error (). */ | |
c906108c SS |
2449 | return; |
2450 | } | |
2451 | ||
2452 | switch (type) | |
2453 | { | |
2454 | case N_FUN: | |
2455 | case N_FNAME: | |
2456 | ||
2457 | if (*name == '\000') | |
2458 | { | |
e31272c3 MK |
2459 | /* This N_FUN marks the end of a function. This closes off |
2460 | the current block. */ | |
df8a16a1 | 2461 | struct block *block; |
0c5e171a | 2462 | |
edb0470b | 2463 | if (outermost_context_p ()) |
24b21115 | 2464 | { |
23136709 | 2465 | lbrac_mismatch_complaint (symnum); |
24b21115 SM |
2466 | break; |
2467 | } | |
0c5e171a | 2468 | |
6b37567a JJ |
2469 | /* The following check is added before recording line 0 at |
2470 | end of function so as to handle hand-generated stabs | |
e31272c3 MK |
2471 | which may have an N_FUN stabs at the end of the function, |
2472 | but no N_SLINE stabs. */ | |
6b37567a | 2473 | if (sline_found_in_function) |
fbf65064 UW |
2474 | { |
2475 | CORE_ADDR addr = last_function_start + valu; | |
9a619af0 | 2476 | |
48e0f38c TT |
2477 | record_line |
2478 | (get_current_subfile (), 0, | |
2479 | unrelocated_addr (gdbarch_addr_bits_remove (gdbarch, addr) | |
2480 | - objfile->text_section_offset ())); | |
fbf65064 | 2481 | } |
6b37567a | 2482 | |
c906108c | 2483 | within_function = 0; |
a60f3166 | 2484 | cstk = pop_context (); |
c906108c SS |
2485 | |
2486 | /* Make a block for the local symbols within. */ | |
c233e9c6 | 2487 | block = finish_block (cstk.name, |
a60f3166 TT |
2488 | cstk.old_blocks, NULL, |
2489 | cstk.start_addr, cstk.start_addr + valu); | |
df8a16a1 DJ |
2490 | |
2491 | /* For C++, set the block's scope. */ | |
c1b5c1eb | 2492 | if (cstk.name->language () == language_cplus) |
a60f3166 | 2493 | cp_set_block_scope (cstk.name, block, &objfile->objfile_obstack); |
c906108c SS |
2494 | |
2495 | /* May be switching to an assembler file which may not be using | |
2496 | block relative stabs, so reset the offset. */ | |
1736a7bd | 2497 | function_start_offset = 0; |
c906108c SS |
2498 | |
2499 | break; | |
2500 | } | |
2501 | ||
a1b9830c DJ |
2502 | sline_found_in_function = 0; |
2503 | ||
e31272c3 | 2504 | /* Relocate for dynamic loading. */ |
b8a6e987 | 2505 | section_index = SECT_OFF_TEXT (objfile); |
6a053cb1 | 2506 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
85ddcc70 | 2507 | valu = gdbarch_addr_bits_remove (gdbarch, valu); |
a1b9830c DJ |
2508 | last_function_start = valu; |
2509 | ||
c906108c SS |
2510 | goto define_a_symbol; |
2511 | ||
2512 | case N_LBRAC: | |
2513 | /* This "symbol" just indicates the start of an inner lexical | |
dda83cd7 | 2514 | context within a function. */ |
c906108c SS |
2515 | |
2516 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2517 | if (n_opt_found && desc == 1) | |
2518 | break; | |
2519 | ||
1736a7bd | 2520 | valu += function_start_offset; |
c906108c | 2521 | |
ab8b8aca | 2522 | push_context (desc, valu); |
c906108c SS |
2523 | break; |
2524 | ||
2525 | case N_RBRAC: | |
2526 | /* This "symbol" just indicates the end of an inner lexical | |
dda83cd7 | 2527 | context that was started with N_LBRAC. */ |
c906108c SS |
2528 | |
2529 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2530 | if (n_opt_found && desc == 1) | |
2531 | break; | |
2532 | ||
1736a7bd | 2533 | valu += function_start_offset; |
c906108c | 2534 | |
edb0470b | 2535 | if (outermost_context_p ()) |
0c5e171a | 2536 | { |
23136709 | 2537 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2538 | break; |
2539 | } | |
2540 | ||
a60f3166 TT |
2541 | cstk = pop_context (); |
2542 | if (desc != cstk.depth) | |
23136709 | 2543 | lbrac_mismatch_complaint (symnum); |
c906108c | 2544 | |
e148f09d | 2545 | if (*get_local_symbols () != NULL) |
1f077a3e | 2546 | { |
35156bae DJ |
2547 | /* GCC development snapshots from March to December of |
2548 | 2000 would output N_LSYM entries after N_LBRAC | |
2549 | entries. As a consequence, these symbols are simply | |
2550 | discarded. Complain if this is the case. */ | |
b98664d3 | 2551 | complaint (_("misplaced N_LBRAC entry; discarding local " |
3e43a32a | 2552 | "symbols which have no enclosing block")); |
1f077a3e | 2553 | } |
e148f09d | 2554 | *get_local_symbols () = cstk.locals; |
c906108c | 2555 | |
a60f3166 | 2556 | if (get_context_stack_depth () > 1) |
c906108c | 2557 | { |
e31272c3 MK |
2558 | /* This is not the outermost LBRAC...RBRAC pair in the |
2559 | function, its local symbols preceded it, and are the ones | |
2560 | just recovered from the context stack. Define the block | |
2561 | for them (but don't bother if the block contains no | |
2562 | symbols. Should we complain on blocks without symbols? | |
2563 | I can't think of any useful purpose for them). */ | |
e148f09d | 2564 | if (*get_local_symbols () != NULL) |
c906108c | 2565 | { |
e31272c3 MK |
2566 | /* Muzzle a compiler bug that makes end < start. |
2567 | ||
2568 | ??? Which compilers? Is this ever harmful?. */ | |
a60f3166 | 2569 | if (cstk.start_addr > valu) |
c906108c | 2570 | { |
b98664d3 | 2571 | complaint (_("block start larger than block end")); |
a60f3166 | 2572 | cstk.start_addr = valu; |
c906108c SS |
2573 | } |
2574 | /* Make a block for the local symbols within. */ | |
c233e9c6 | 2575 | finish_block (0, cstk.old_blocks, NULL, |
a60f3166 | 2576 | cstk.start_addr, valu); |
c906108c SS |
2577 | } |
2578 | } | |
2579 | else | |
2580 | { | |
2581 | /* This is the outermost LBRAC...RBRAC pair. There is no | |
2582 | need to do anything; leave the symbols that preceded it | |
2583 | to be attached to the function's own block. We need to | |
2584 | indicate that we just moved outside of the function. */ | |
2585 | within_function = 0; | |
2586 | } | |
2587 | ||
c906108c SS |
2588 | break; |
2589 | ||
2590 | case N_FN: | |
2591 | case N_FN_SEQ: | |
e31272c3 | 2592 | /* This kind of symbol indicates the start of an object file. |
dda83cd7 | 2593 | Relocate for dynamic loading. */ |
b8a6e987 | 2594 | section_index = SECT_OFF_TEXT (objfile); |
6a053cb1 | 2595 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
c906108c SS |
2596 | break; |
2597 | ||
2598 | case N_SO: | |
e31272c3 | 2599 | /* This type of symbol indicates the start of data for one |
dda83cd7 SM |
2600 | source file. Finish the symbol table of the previous source |
2601 | file (if any) and start accumulating a new symbol table. | |
2602 | Relocate for dynamic loading. */ | |
b8a6e987 | 2603 | section_index = SECT_OFF_TEXT (objfile); |
6a053cb1 | 2604 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
c906108c SS |
2605 | |
2606 | n_opt_found = 0; | |
2607 | ||
46212e0b | 2608 | if (get_last_source_file ()) |
c906108c SS |
2609 | { |
2610 | /* Check if previous symbol was also an N_SO (with some | |
e31272c3 MK |
2611 | sanity checks). If so, that one was actually the |
2612 | directory name, and the current one is the real file | |
0963b4bd | 2613 | name. Patch things up. */ |
c906108c SS |
2614 | if (previous_stab_code == (unsigned char) N_SO) |
2615 | { | |
3c65e5b3 | 2616 | patch_subfile_names (get_current_subfile (), name); |
0963b4bd | 2617 | break; /* Ignore repeated SOs. */ |
c906108c | 2618 | } |
83bad316 | 2619 | end_compunit_symtab (valu); |
c906108c SS |
2620 | end_stabs (); |
2621 | } | |
2622 | ||
e31272c3 | 2623 | /* Null name means this just marks the end of text for this .o |
dda83cd7 | 2624 | file. Don't start a new symtab in this case. */ |
c906108c SS |
2625 | if (*name == '\000') |
2626 | break; | |
2627 | ||
1736a7bd | 2628 | function_start_offset = 0; |
c906108c SS |
2629 | |
2630 | start_stabs (); | |
59dfe8ad | 2631 | start_compunit_symtab (objfile, name, NULL, valu, language); |
c906108c SS |
2632 | record_debugformat ("stabs"); |
2633 | break; | |
2634 | ||
2635 | case N_SOL: | |
e31272c3 | 2636 | /* This type of symbol indicates the start of data for a |
dda83cd7 SM |
2637 | sub-source-file, one whose contents were copied or included |
2638 | in the compilation of the main source file (whose name was | |
2639 | given in the N_SO symbol). Relocate for dynamic loading. */ | |
b8a6e987 | 2640 | section_index = SECT_OFF_TEXT (objfile); |
6a053cb1 | 2641 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
4d663531 | 2642 | start_subfile (name); |
c906108c SS |
2643 | break; |
2644 | ||
2645 | case N_BINCL: | |
2646 | push_subfile (); | |
2647 | add_new_header_file (name, valu); | |
4d663531 | 2648 | start_subfile (name); |
c906108c SS |
2649 | break; |
2650 | ||
2651 | case N_EINCL: | |
4d663531 | 2652 | start_subfile (pop_subfile ()); |
c906108c SS |
2653 | break; |
2654 | ||
2655 | case N_EXCL: | |
2656 | add_old_header_file (name, valu); | |
2657 | break; | |
2658 | ||
2659 | case N_SLINE: | |
e31272c3 | 2660 | /* This type of "symbol" really just records one line-number -- |
dda83cd7 SM |
2661 | core-address correspondence. Enter it in the line list for |
2662 | this symbol table. */ | |
c906108c | 2663 | |
e31272c3 | 2664 | /* Relocate for dynamic loading and for ELF acc |
dda83cd7 | 2665 | function-relative symbols. */ |
c906108c SS |
2666 | valu += function_start_offset; |
2667 | ||
85102364 | 2668 | /* GCC 2.95.3 emits the first N_SLINE stab somewhere in the |
ceddaf06 MK |
2669 | middle of the prologue instead of right at the start of the |
2670 | function. To deal with this we record the address for the | |
2671 | first N_SLINE stab to be the start of the function instead of | |
2672 | the listed location. We really shouldn't to this. When | |
2673 | compiling with optimization, this first N_SLINE stab might be | |
2674 | optimized away. Other (non-GCC) compilers don't emit this | |
2675 | stab at all. There is no real harm in having an extra | |
2676 | numbered line, although it can be a bit annoying for the | |
2677 | user. However, it totally screws up our testsuite. | |
2678 | ||
2679 | So for now, keep adjusting the address of the first N_SLINE | |
2680 | stab, but only for code compiled with GCC. */ | |
2681 | ||
a1b9830c DJ |
2682 | if (within_function && sline_found_in_function == 0) |
2683 | { | |
fbf65064 UW |
2684 | CORE_ADDR addr = processing_gcc_compilation == 2 ? |
2685 | last_function_start : valu; | |
9a619af0 | 2686 | |
48e0f38c TT |
2687 | record_line |
2688 | (get_current_subfile (), desc, | |
2689 | unrelocated_addr (gdbarch_addr_bits_remove (gdbarch, addr) | |
2690 | - objfile->text_section_offset ())); | |
a1b9830c DJ |
2691 | sline_found_in_function = 1; |
2692 | } | |
2693 | else | |
48e0f38c TT |
2694 | record_line |
2695 | (get_current_subfile (), desc, | |
2696 | unrelocated_addr (gdbarch_addr_bits_remove (gdbarch, valu) | |
2697 | - objfile->text_section_offset ())); | |
c906108c SS |
2698 | break; |
2699 | ||
2700 | case N_BCOMM: | |
2701 | common_block_start (name, objfile); | |
2702 | break; | |
2703 | ||
2704 | case N_ECOMM: | |
2705 | common_block_end (objfile); | |
2706 | break; | |
2707 | ||
e31272c3 | 2708 | /* The following symbol types need to have the appropriate |
dda83cd7 SM |
2709 | offset added to their value; then we process symbol |
2710 | definitions in the name. */ | |
c906108c | 2711 | |
e31272c3 MK |
2712 | case N_STSYM: /* Static symbol in data segment. */ |
2713 | case N_LCSYM: /* Static symbol in BSS segment. */ | |
2714 | case N_ROSYM: /* Static symbol in read-only data segment. */ | |
c5aa993b | 2715 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
dda83cd7 SM |
2716 | Solaris 2's stabs-in-elf makes *most* symbols relative but |
2717 | leaves a few absolute (at least for Solaris 2.1 and version | |
2718 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on | |
2719 | the fence. .stab "foo:S...",N_STSYM is absolute (ld | |
2720 | relocates it) .stab "foo:V...",N_STSYM is relative (section | |
2721 | base subtracted). This leaves us no choice but to search for | |
2722 | the 'S' or 'V'... (or pass the whole section_offsets stuff | |
2723 | down ONE MORE function call level, which we really don't want | |
2724 | to do). */ | |
c906108c | 2725 | { |
a121b7c1 | 2726 | const char *p; |
c906108c | 2727 | |
e31272c3 MK |
2728 | /* Normal object file and NLMs have non-zero text seg offsets, |
2729 | but don't need their static syms offset in this fashion. | |
2730 | XXX - This is really a crock that should be fixed in the | |
2731 | solib handling code so that I don't have to work around it | |
2732 | here. */ | |
c906108c SS |
2733 | |
2734 | if (!symfile_relocatable) | |
2735 | { | |
2736 | p = strchr (name, ':'); | |
2737 | if (p != 0 && p[1] == 'S') | |
2738 | { | |
18a94d75 DE |
2739 | /* The linker relocated it. We don't want to add a |
2740 | Sun-stabs Tfoo.foo-like offset, but we *do* | |
e31272c3 MK |
2741 | want to add whatever solib.c passed to |
2742 | symbol_file_add as addr (this is known to affect | |
18a94d75 DE |
2743 | SunOS 4, and I suspect ELF too). Since there is no |
2744 | Ttext.text symbol, we can get addr from the text offset. */ | |
b8a6e987 | 2745 | section_index = SECT_OFF_TEXT (objfile); |
6a053cb1 | 2746 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
c906108c SS |
2747 | goto define_a_symbol; |
2748 | } | |
2749 | } | |
e31272c3 | 2750 | /* Since it's not the kludge case, re-dispatch to the right |
dda83cd7 | 2751 | handler. */ |
c5aa993b JM |
2752 | switch (type) |
2753 | { | |
2754 | case N_STSYM: | |
2755 | goto case_N_STSYM; | |
2756 | case N_LCSYM: | |
2757 | goto case_N_LCSYM; | |
2758 | case N_ROSYM: | |
2759 | goto case_N_ROSYM; | |
2760 | default: | |
f34652de | 2761 | internal_error (_("failed internal consistency check")); |
c5aa993b | 2762 | } |
c906108c SS |
2763 | } |
2764 | ||
e31272c3 MK |
2765 | case_N_STSYM: /* Static symbol in data segment. */ |
2766 | case N_DSLINE: /* Source line number, data segment. */ | |
b8a6e987 | 2767 | section_index = SECT_OFF_DATA (objfile); |
6a053cb1 | 2768 | valu += section_offsets[SECT_OFF_DATA (objfile)]; |
c906108c SS |
2769 | goto define_a_symbol; |
2770 | ||
e31272c3 MK |
2771 | case_N_LCSYM: /* Static symbol in BSS segment. */ |
2772 | case N_BSLINE: /* Source line number, BSS segment. */ | |
2773 | /* N_BROWS: overlaps with N_BSLINE. */ | |
b8a6e987 | 2774 | section_index = SECT_OFF_BSS (objfile); |
6a053cb1 | 2775 | valu += section_offsets[SECT_OFF_BSS (objfile)]; |
c906108c SS |
2776 | goto define_a_symbol; |
2777 | ||
e31272c3 | 2778 | case_N_ROSYM: /* Static symbol in read-only data segment. */ |
b8a6e987 | 2779 | section_index = SECT_OFF_RODATA (objfile); |
6a053cb1 | 2780 | valu += section_offsets[SECT_OFF_RODATA (objfile)]; |
c906108c SS |
2781 | goto define_a_symbol; |
2782 | ||
e31272c3 MK |
2783 | case N_ENTRY: /* Alternate entry point. */ |
2784 | /* Relocate for dynamic loading. */ | |
b8a6e987 | 2785 | section_index = SECT_OFF_TEXT (objfile); |
6a053cb1 | 2786 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
c906108c SS |
2787 | goto define_a_symbol; |
2788 | ||
e31272c3 | 2789 | /* The following symbol types we don't know how to process. |
dda83cd7 SM |
2790 | Handle them in a "default" way, but complain to people who |
2791 | care. */ | |
c906108c | 2792 | default: |
e31272c3 MK |
2793 | case N_CATCH: /* Exception handler catcher. */ |
2794 | case N_EHDECL: /* Exception handler name. */ | |
2795 | case N_PC: /* Global symbol in Pascal. */ | |
2796 | case N_M2C: /* Modula-2 compilation unit. */ | |
2797 | /* N_MOD2: overlaps with N_EHDECL. */ | |
2798 | case N_SCOPE: /* Modula-2 scope information. */ | |
2799 | case N_ECOML: /* End common (local name). */ | |
2800 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
c906108c SS |
2801 | case N_NBDATA: |
2802 | case N_NBBSS: | |
2803 | case N_NBSTS: | |
2804 | case N_NBLCS: | |
bb599908 | 2805 | unknown_symtype_complaint (hex_string (type)); |
c906108c SS |
2806 | /* FALLTHROUGH */ |
2807 | ||
c906108c | 2808 | define_a_symbol: |
86a73007 | 2809 | /* These symbol types don't need the address field relocated, |
dda83cd7 | 2810 | since it is either unused, or is absolute. */ |
e31272c3 MK |
2811 | case N_GSYM: /* Global variable. */ |
2812 | case N_NSYMS: /* Number of symbols (Ultrix). */ | |
2813 | case N_NOMAP: /* No map? (Ultrix). */ | |
2814 | case N_RSYM: /* Register variable. */ | |
2815 | case N_DEFD: /* Modula-2 GNU module dependency. */ | |
2816 | case N_SSYM: /* Struct or union element. */ | |
2817 | case N_LSYM: /* Local symbol in stack. */ | |
2818 | case N_PSYM: /* Parameter variable. */ | |
2819 | case N_LENG: /* Length of preceding symbol type. */ | |
c906108c SS |
2820 | if (name) |
2821 | { | |
2822 | int deftype; | |
a121b7c1 | 2823 | const char *colon_pos = strchr (name, ':'); |
9a619af0 | 2824 | |
c906108c SS |
2825 | if (colon_pos == NULL) |
2826 | deftype = '\0'; | |
2827 | else | |
2828 | deftype = colon_pos[1]; | |
2829 | ||
2830 | switch (deftype) | |
2831 | { | |
2832 | case 'f': | |
2833 | case 'F': | |
e31272c3 | 2834 | /* Deal with the SunPRO 3.0 compiler which omits the |
dda83cd7 | 2835 | address from N_FUN symbols. */ |
c906108c | 2836 | if (type == N_FUN |
6a053cb1 | 2837 | && valu == section_offsets[SECT_OFF_TEXT (objfile)] |
5e2b427d | 2838 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9a058a09 | 2839 | { |
79748972 TT |
2840 | struct bound_minimal_symbol minsym |
2841 | = find_stab_function (name, get_last_source_file (), | |
2842 | objfile); | |
2843 | if (minsym.minsym != NULL) | |
4aeddc50 | 2844 | valu = minsym.value_address (); |
9a058a09 | 2845 | } |
c906108c | 2846 | |
1736a7bd PA |
2847 | /* These addresses are absolute. */ |
2848 | function_start_offset = valu; | |
c906108c SS |
2849 | |
2850 | within_function = 1; | |
c3f6f71d | 2851 | |
a60f3166 | 2852 | if (get_context_stack_depth () > 1) |
c3f6f71d | 2853 | { |
b98664d3 | 2854 | complaint (_("unmatched N_LBRAC before symtab pos %d"), |
063e58ba | 2855 | symnum); |
c3f6f71d JM |
2856 | break; |
2857 | } | |
2858 | ||
edb0470b | 2859 | if (!outermost_context_p ()) |
c906108c | 2860 | { |
df8a16a1 DJ |
2861 | struct block *block; |
2862 | ||
a60f3166 | 2863 | cstk = pop_context (); |
c906108c | 2864 | /* Make a block for the local symbols within. */ |
c233e9c6 | 2865 | block = finish_block (cstk.name, |
a60f3166 TT |
2866 | cstk.old_blocks, NULL, |
2867 | cstk.start_addr, valu); | |
df8a16a1 DJ |
2868 | |
2869 | /* For C++, set the block's scope. */ | |
c1b5c1eb | 2870 | if (cstk.name->language () == language_cplus) |
a60f3166 | 2871 | cp_set_block_scope (cstk.name, block, |
195a3f6c | 2872 | &objfile->objfile_obstack); |
c906108c | 2873 | } |
c906108c | 2874 | |
fe978cb0 PA |
2875 | newobj = push_context (0, valu); |
2876 | newobj->name = define_symbol (valu, name, desc, type, objfile); | |
b8a6e987 TT |
2877 | if (newobj->name != nullptr) |
2878 | newobj->name->set_section_index (section_index); | |
c906108c SS |
2879 | break; |
2880 | ||
2881 | default: | |
b8a6e987 TT |
2882 | { |
2883 | struct symbol *sym = define_symbol (valu, name, desc, type, | |
2884 | objfile); | |
2885 | if (sym != nullptr) | |
2886 | sym->set_section_index (section_index); | |
2887 | } | |
c906108c SS |
2888 | break; |
2889 | } | |
2890 | } | |
2891 | break; | |
2892 | ||
c5aa993b | 2893 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
dda83cd7 SM |
2894 | for a bunch of other flags, too. Someday we may parse their |
2895 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
e31272c3 | 2896 | case N_OPT: /* Solaris 2: Compiler options. */ |
c906108c SS |
2897 | if (name) |
2898 | { | |
6314a349 | 2899 | if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2900 | { |
2901 | processing_gcc_compilation = 2; | |
c906108c SS |
2902 | } |
2903 | else | |
2904 | n_opt_found = 1; | |
2905 | } | |
2906 | break; | |
2907 | ||
51cc5b07 AC |
2908 | case N_MAIN: /* Name of main routine. */ |
2909 | /* FIXME: If one has a symbol file with N_MAIN and then replaces | |
2910 | it with a symbol file with "main" and without N_MAIN. I'm | |
2911 | not sure exactly what rule to follow but probably something | |
2912 | like: N_MAIN takes precedence over "main" no matter what | |
2913 | objfile it is in; If there is more than one N_MAIN, choose | |
2914 | the one in the symfile_objfile; If there is more than one | |
2915 | N_MAIN within a given objfile, complain() and choose | |
0963b4bd | 2916 | arbitrarily. (kingdon) */ |
51cc5b07 | 2917 | if (name != NULL) |
3d548a53 | 2918 | set_objfile_main_name (objfile, name, language_unknown); |
51cc5b07 AC |
2919 | break; |
2920 | ||
c5aa993b | 2921 | /* The following symbol types can be ignored. */ |
e31272c3 MK |
2922 | case N_OBJ: /* Solaris 2: Object file dir and name. */ |
2923 | case N_PATCH: /* Solaris 2: Patch Run Time Checker. */ | |
2924 | /* N_UNDF: Solaris 2: File separator mark. */ | |
2925 | /* N_UNDF: -- we will never encounter it, since we only process | |
dda83cd7 | 2926 | one file's symbols at once. */ |
e31272c3 | 2927 | case N_ENDM: /* Solaris 2: End of module. */ |
c906108c SS |
2928 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
2929 | break; | |
2930 | } | |
2931 | ||
2932 | /* '#' is a GNU C extension to allow one symbol to refer to another | |
2933 | related symbol. | |
2934 | ||
2935 | Generally this is used so that an alias can refer to its main | |
c5aa993b | 2936 | symbol. */ |
13f6513c | 2937 | gdb_assert (name); |
c906108c SS |
2938 | if (name[0] == '#') |
2939 | { | |
e31272c3 | 2940 | /* Initialize symbol reference names and determine if this is a |
dda83cd7 SM |
2941 | definition. If a symbol reference is being defined, go ahead |
2942 | and add it. Otherwise, just return. */ | |
c906108c | 2943 | |
a121b7c1 | 2944 | const char *s = name; |
c906108c SS |
2945 | int refnum; |
2946 | ||
2947 | /* If this stab defines a new reference ID that is not on the | |
dda83cd7 | 2948 | reference list, then put it on the reference list. |
c906108c | 2949 | |
dda83cd7 SM |
2950 | We go ahead and advance NAME past the reference, even though |
2951 | it is not strictly necessary at this time. */ | |
c906108c SS |
2952 | refnum = symbol_reference_defined (&s); |
2953 | if (refnum >= 0) | |
2954 | if (!ref_search (refnum)) | |
2955 | ref_add (refnum, 0, name, valu); | |
2956 | name = s; | |
2957 | } | |
2958 | ||
c906108c SS |
2959 | previous_stab_code = type; |
2960 | } | |
2961 | \f | |
2962 | /* FIXME: The only difference between this and elfstab_build_psymtabs | |
2963 | is the call to install_minimal_symbols for elf, and the support for | |
2964 | split sections. If the differences are really that small, the code | |
2965 | should be shared. */ | |
2966 | ||
2967 | /* Scan and build partial symbols for an coff symbol file. | |
2968 | The coff file has already been processed to get its minimal symbols. | |
2969 | ||
2970 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2971 | rolled into one. | |
2972 | ||
2973 | OBJFILE is the object file we are reading symbols from. | |
2974 | ADDR is the address relative to which the symbols are (e.g. | |
2975 | the base address of the text segment). | |
c906108c SS |
2976 | TEXTADDR is the address of the text section. |
2977 | TEXTSIZE is the size of the text section. | |
2978 | STABSECTS is the list of .stab sections in OBJFILE. | |
2979 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
2980 | .stabstr section exists. | |
2981 | ||
2982 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 2983 | adjusted for coff details. */ |
c906108c SS |
2984 | |
2985 | void | |
c67a9c90 | 2986 | coffstab_build_psymtabs (struct objfile *objfile, |
fba45db2 | 2987 | CORE_ADDR textaddr, unsigned int textsize, |
e2a03548 | 2988 | const std::vector<asection *> &stabsects, |
fba45db2 | 2989 | file_ptr stabstroffset, unsigned int stabstrsize) |
c906108c SS |
2990 | { |
2991 | int val; | |
98badbfd | 2992 | bfd *sym_bfd = objfile->obfd.get (); |
b16c44de | 2993 | const char *name = bfd_get_filename (sym_bfd); |
c906108c SS |
2994 | unsigned int stabsize; |
2995 | ||
caa429d8 | 2996 | /* Allocate struct to keep track of stab reading. */ |
22a20dca | 2997 | dbx_objfile_data_key.emplace (objfile); |
caa429d8 | 2998 | |
c906108c SS |
2999 | DBX_TEXT_ADDR (objfile) = textaddr; |
3000 | DBX_TEXT_SIZE (objfile) = textsize; | |
3001 | ||
3002 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3003 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; |
c906108c | 3004 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
c5aa993b | 3005 | |
c906108c | 3006 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3007 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3008 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3009 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3010 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3011 | |
3012 | /* Now read in the string table in one big gulp. */ | |
3013 | ||
3014 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3015 | if (val < 0) | |
3016 | perror_with_name (name); | |
3a42e9d0 | 3017 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3018 | if (val != stabstrsize) |
3019 | perror_with_name (name); | |
3020 | ||
3021 | stabsread_new_init (); | |
c906108c SS |
3022 | free_header_files (); |
3023 | init_header_files (); | |
3024 | ||
3025 | processing_acc_compilation = 1; | |
3026 | ||
3027 | /* In a coff file, we've already installed the minimal symbols that came | |
3028 | from the coff (non-stab) symbol table, so always act like an | |
0963b4bd | 3029 | incremental load here. */ |
e2a03548 TT |
3030 | scoped_restore save_symbuf_sections |
3031 | = make_scoped_restore (&symbuf_sections); | |
3032 | if (stabsects.size () == 1) | |
c906108c | 3033 | { |
fd361982 | 3034 | stabsize = bfd_section_size (stabsects[0]); |
c906108c | 3035 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); |
e2a03548 | 3036 | DBX_SYMTAB_OFFSET (objfile) = stabsects[0]->filepos; |
c906108c SS |
3037 | } |
3038 | else | |
3039 | { | |
c906108c | 3040 | DBX_SYMCOUNT (objfile) = 0; |
e2a03548 | 3041 | for (asection *section : stabsects) |
c906108c | 3042 | { |
fd361982 | 3043 | stabsize = bfd_section_size (section); |
c906108c SS |
3044 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); |
3045 | } | |
3046 | ||
e2a03548 | 3047 | DBX_SYMTAB_OFFSET (objfile) = stabsects[0]->filepos; |
c906108c | 3048 | |
e2a03548 TT |
3049 | sect_idx = 1; |
3050 | symbuf_sections = &stabsects; | |
fd361982 | 3051 | symbuf_left = bfd_section_size (stabsects[0]); |
c906108c SS |
3052 | symbuf_read = 0; |
3053 | } | |
3054 | ||
96baa820 | 3055 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3056 | } |
3057 | \f | |
3058 | /* Scan and build partial symbols for an ELF symbol file. | |
fea25152 | 3059 | This ELF file has already been processed to get its minimal symbols. |
c906108c SS |
3060 | |
3061 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3062 | rolled into one. | |
3063 | ||
3064 | OBJFILE is the object file we are reading symbols from. | |
3065 | ADDR is the address relative to which the symbols are (e.g. | |
3066 | the base address of the text segment). | |
086df311 | 3067 | STABSECT is the BFD section information for the .stab section. |
c906108c SS |
3068 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
3069 | .stabstr section exists. | |
3070 | ||
3071 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 3072 | adjusted for elf details. */ |
c906108c SS |
3073 | |
3074 | void | |
c67a9c90 | 3075 | elfstab_build_psymtabs (struct objfile *objfile, asection *stabsect, |
fba45db2 | 3076 | file_ptr stabstroffset, unsigned int stabstrsize) |
c906108c SS |
3077 | { |
3078 | int val; | |
98badbfd | 3079 | bfd *sym_bfd = objfile->obfd.get (); |
b16c44de | 3080 | const char *name = bfd_get_filename (sym_bfd); |
c906108c | 3081 | |
caa429d8 TT |
3082 | stabsread_new_init (); |
3083 | ||
3084 | /* Allocate struct to keep track of stab reading. */ | |
22a20dca | 3085 | dbx_objfile_data_key.emplace (objfile); |
caa429d8 | 3086 | |
7a292a7a SS |
3087 | /* Find the first and last text address. dbx_symfile_read seems to |
3088 | want this. */ | |
3089 | find_text_range (sym_bfd, objfile); | |
c906108c SS |
3090 | |
3091 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3092 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; |
086df311 | 3093 | DBX_SYMCOUNT (objfile) |
fd361982 | 3094 | = bfd_section_size (stabsect) / DBX_SYMBOL_SIZE (objfile); |
c906108c | 3095 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
086df311 DJ |
3096 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; |
3097 | DBX_STAB_SECTION (objfile) = stabsect; | |
c5aa993b | 3098 | |
c906108c | 3099 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3100 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3101 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3102 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3103 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3104 | |
3105 | /* Now read in the string table in one big gulp. */ | |
3106 | ||
3107 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3108 | if (val < 0) | |
3109 | perror_with_name (name); | |
3a42e9d0 | 3110 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3111 | if (val != stabstrsize) |
3112 | perror_with_name (name); | |
3113 | ||
3114 | stabsread_new_init (); | |
c906108c SS |
3115 | free_header_files (); |
3116 | init_header_files (); | |
c906108c SS |
3117 | |
3118 | processing_acc_compilation = 1; | |
3119 | ||
086df311 | 3120 | symbuf_read = 0; |
fd361982 | 3121 | symbuf_left = bfd_section_size (stabsect); |
bf259e25 TT |
3122 | |
3123 | scoped_restore restore_stabs_data = make_scoped_restore (&stabs_data); | |
3124 | gdb::unique_xmalloc_ptr<gdb_byte> data_holder; | |
3125 | ||
ac8035ab | 3126 | stabs_data = symfile_relocate_debug_section (objfile, stabsect, NULL); |
086df311 | 3127 | if (stabs_data) |
bf259e25 | 3128 | data_holder.reset (stabs_data); |
086df311 | 3129 | |
c906108c SS |
3130 | /* In an elf file, we've already installed the minimal symbols that came |
3131 | from the elf (non-stab) symbol table, so always act like an | |
7134143f DJ |
3132 | incremental load here. dbx_symfile_read should not generate any new |
3133 | minimal symbols, since we will have already read the ELF dynamic symbol | |
3134 | table and normal symbol entries won't be in the ".stab" section; but in | |
3135 | case it does, it will install them itself. */ | |
96baa820 | 3136 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3137 | } |
3138 | \f | |
3139 | /* Scan and build partial symbols for a file with special sections for stabs | |
3140 | and stabstrings. The file has already been processed to get its minimal | |
3141 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
3142 | ||
3143 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
3144 | rolled into one. | |
3145 | ||
3146 | OBJFILE is the object file we are reading symbols from. | |
3147 | ADDR is the address relative to which the symbols are (e.g. the base address | |
c5aa993b | 3148 | of the text segment). |
c906108c SS |
3149 | STAB_NAME is the name of the section that contains the stabs. |
3150 | STABSTR_NAME is the name of the section that contains the stab strings. | |
3151 | ||
0963b4bd MS |
3152 | This routine is mostly copied from dbx_symfile_init and |
3153 | dbx_symfile_read. */ | |
c906108c SS |
3154 | |
3155 | void | |
c67a9c90 | 3156 | stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, |
fba45db2 | 3157 | char *stabstr_name, char *text_name) |
c906108c SS |
3158 | { |
3159 | int val; | |
98badbfd | 3160 | bfd *sym_bfd = objfile->obfd.get (); |
b16c44de | 3161 | const char *name = bfd_get_filename (sym_bfd); |
c906108c SS |
3162 | asection *stabsect; |
3163 | asection *stabstrsect; | |
3164 | asection *text_sect; | |
3165 | ||
3166 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
3167 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
3168 | ||
3169 | if (!stabsect) | |
3170 | return; | |
3171 | ||
3172 | if (!stabstrsect) | |
0963b4bd MS |
3173 | error (_("stabsect_build_psymtabs: Found stabs (%s), " |
3174 | "but not string section (%s)"), | |
c906108c SS |
3175 | stab_name, stabstr_name); |
3176 | ||
22a20dca | 3177 | dbx_objfile_data_key.emplace (objfile); |
c906108c SS |
3178 | |
3179 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); | |
3180 | if (!text_sect) | |
8a3fe4f8 | 3181 | error (_("Can't find %s section in symbol file"), text_name); |
fd361982 AM |
3182 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (text_sect); |
3183 | DBX_TEXT_SIZE (objfile) = bfd_section_size (text_sect); | |
c906108c | 3184 | |
c5aa993b | 3185 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); |
fd361982 | 3186 | DBX_SYMCOUNT (objfile) = bfd_section_size (stabsect) |
c906108c | 3187 | / DBX_SYMBOL_SIZE (objfile); |
fd361982 | 3188 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (stabstrsect); |
3e43a32a MS |
3189 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING |
3190 | INSIDE BFD DATA | |
3191 | STRUCTURES */ | |
c5aa993b | 3192 | |
c906108c | 3193 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) |
063e58ba MD |
3194 | error (_("ridiculous string table size: %d bytes"), |
3195 | DBX_STRINGTAB_SIZE (objfile)); | |
c906108c | 3196 | DBX_STRINGTAB (objfile) = (char *) |
3e43a32a MS |
3197 | obstack_alloc (&objfile->objfile_obstack, |
3198 | DBX_STRINGTAB_SIZE (objfile) + 1); | |
c906108c SS |
3199 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); |
3200 | ||
3201 | /* Now read in the string table in one big gulp. */ | |
3202 | ||
c5aa993b JM |
3203 | val = bfd_get_section_contents (sym_bfd, /* bfd */ |
3204 | stabstrsect, /* bfd section */ | |
063e58ba | 3205 | DBX_STRINGTAB (objfile), /* input buffer */ |
3e43a32a MS |
3206 | 0, /* offset into section */ |
3207 | DBX_STRINGTAB_SIZE (objfile)); /* amount to | |
3208 | read */ | |
c906108c SS |
3209 | |
3210 | if (!val) | |
3211 | perror_with_name (name); | |
3212 | ||
3213 | stabsread_new_init (); | |
c906108c SS |
3214 | free_header_files (); |
3215 | init_header_files (); | |
c906108c | 3216 | |
0963b4bd | 3217 | /* Now, do an incremental load. */ |
c906108c SS |
3218 | |
3219 | processing_acc_compilation = 1; | |
96baa820 | 3220 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3221 | } |
3222 | \f | |
00b5771c | 3223 | static const struct sym_fns aout_sym_fns = |
c906108c | 3224 | { |
0963b4bd MS |
3225 | dbx_new_init, /* init anything gbl to entire symtab */ |
3226 | dbx_symfile_init, /* read initial info, setup for sym_read() */ | |
3227 | dbx_symfile_read, /* read a symbol file into symtab */ | |
3228 | dbx_symfile_finish, /* finished with file, cleanup */ | |
3229 | default_symfile_offsets, /* parse user's offsets to internal form */ | |
3230 | default_symfile_segments, /* Get segment information from a file. */ | |
3231 | NULL, | |
3232 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3233 | NULL, /* sym_probe_fns */ |
c906108c SS |
3234 | }; |
3235 | ||
6c265988 | 3236 | void _initialize_dbxread (); |
c906108c | 3237 | void |
6c265988 | 3238 | _initialize_dbxread () |
c906108c | 3239 | { |
c256e171 | 3240 | add_symtab_fns (bfd_target_aout_flavour, &aout_sym_fns); |
c906108c | 3241 | } |