Commit | Line | Data |
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c906108c | 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
3666a048 | 2 | Copyright (C) 1986-2021 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | /* This module provides three functions: dbx_symfile_init, | |
20 | which initializes to read a symbol file; dbx_new_init, which | |
21 | discards existing cached information when all symbols are being | |
22 | discarded; and dbx_symfile_read, which reads a symbol table | |
23 | from a file. | |
24 | ||
25 | dbx_symfile_read only does the minimum work necessary for letting the | |
26 | user "name" things symbolically; it does not read the entire symtab. | |
27 | Instead, it reads the external and static symbols and puts them in partial | |
28 | symbol tables. When more extensive information is requested of a | |
29 | file, the corresponding partial symbol table is mutated into a full | |
30 | fledged symbol table by going back and reading the symbols | |
31 | for real. dbx_psymtab_to_symtab() is the function that does this */ | |
32 | ||
33 | #include "defs.h" | |
1f04aa62 | 34 | #if defined(__CYGNUSCLIB__) |
c906108c SS |
35 | #include <sys/types.h> |
36 | #include <fcntl.h> | |
37 | #endif | |
38 | ||
04ea0df1 | 39 | #include "gdb_obstack.h" |
53ce3c39 | 40 | #include <sys/stat.h> |
c906108c SS |
41 | #include "symtab.h" |
42 | #include "breakpoint.h" | |
c906108c SS |
43 | #include "target.h" |
44 | #include "gdbcore.h" /* for bfd stuff */ | |
c5aa993b | 45 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
0ba1096a | 46 | #include "filenames.h" |
c906108c | 47 | #include "objfiles.h" |
0baae8db | 48 | #include "buildsym-legacy.h" |
c906108c SS |
49 | #include "stabsread.h" |
50 | #include "gdb-stabs.h" | |
51 | #include "demangle.h" | |
c906108c | 52 | #include "complaints.h" |
015a42b4 | 53 | #include "cp-abi.h" |
df8a16a1 | 54 | #include "cp-support.h" |
ccefe4c4 | 55 | #include "psympriv.h" |
195a3f6c | 56 | #include "block.h" |
c906108c | 57 | #include "aout/aout64.h" |
0963b4bd MS |
58 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not |
59 | native, now. */ | |
c906108c | 60 | \f |
c5aa993b | 61 | |
d2f4b8fe TT |
62 | /* Key for dbx-associated data. */ |
63 | ||
22a20dca | 64 | objfile_key<dbx_symfile_info> dbx_objfile_data_key; |
d2f4b8fe | 65 | |
c906108c SS |
66 | /* We put a pointer to this structure in the read_symtab_private field |
67 | of the psymtab. */ | |
68 | ||
c5aa993b JM |
69 | struct symloc |
70 | { | |
c5aa993b JM |
71 | /* Offset within the file symbol table of first local symbol for this |
72 | file. */ | |
c906108c | 73 | |
c5aa993b | 74 | int ldsymoff; |
c906108c | 75 | |
c5aa993b JM |
76 | /* Length (in bytes) of the section of the symbol table devoted to |
77 | this file's symbols (actually, the section bracketed may contain | |
78 | more than just this file's symbols). If ldsymlen is 0, the only | |
79 | reason for this thing's existence is the dependency list. Nothing | |
80 | else will happen when it is read in. */ | |
c906108c | 81 | |
c5aa993b | 82 | int ldsymlen; |
c906108c | 83 | |
c5aa993b | 84 | /* The size of each symbol in the symbol file (in external form). */ |
c906108c | 85 | |
c5aa993b | 86 | int symbol_size; |
c906108c | 87 | |
c5aa993b JM |
88 | /* Further information needed to locate the symbols if they are in |
89 | an ELF file. */ | |
c906108c | 90 | |
c5aa993b JM |
91 | int symbol_offset; |
92 | int string_offset; | |
93 | int file_string_offset; | |
5ffa0793 | 94 | enum language pst_language; |
c5aa993b | 95 | }; |
c906108c SS |
96 | |
97 | #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) | |
98 | #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) | |
99 | #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private)) | |
100 | #define SYMBOL_SIZE(p) (SYMLOC(p)->symbol_size) | |
101 | #define SYMBOL_OFFSET(p) (SYMLOC(p)->symbol_offset) | |
102 | #define STRING_OFFSET(p) (SYMLOC(p)->string_offset) | |
103 | #define FILE_STRING_OFFSET(p) (SYMLOC(p)->file_string_offset) | |
5ffa0793 | 104 | #define PST_LANGUAGE(p) (SYMLOC(p)->pst_language) |
c906108c | 105 | \f |
c5aa993b | 106 | |
91a81f69 TT |
107 | /* The objfile we are currently reading. */ |
108 | ||
dd707e8e | 109 | static struct objfile *dbxread_objfile; |
91a81f69 | 110 | |
0963b4bd | 111 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
112 | |
113 | static enum language psymtab_language = language_unknown; | |
114 | ||
c906108c SS |
115 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
116 | ||
117 | static bfd *symfile_bfd; | |
118 | ||
119 | /* The size of each symbol in the symbol file (in external form). | |
120 | This is set by dbx_symfile_read when building psymtabs, and by | |
121 | dbx_psymtab_to_symtab when building symtabs. */ | |
122 | ||
123 | static unsigned symbol_size; | |
124 | ||
0963b4bd | 125 | /* This is the offset of the symbol table in the executable file. */ |
c906108c SS |
126 | |
127 | static unsigned symbol_table_offset; | |
128 | ||
0963b4bd | 129 | /* This is the offset of the string table in the executable file. */ |
c906108c SS |
130 | |
131 | static unsigned string_table_offset; | |
132 | ||
133 | /* For elf+stab executables, the n_strx field is not a simple index | |
134 | into the string table. Instead, each .o file has a base offset in | |
135 | the string table, and the associated symbols contain offsets from | |
136 | this base. The following two variables contain the base offset for | |
0963b4bd | 137 | the current and next .o files. */ |
c906108c SS |
138 | |
139 | static unsigned int file_string_table_offset; | |
140 | static unsigned int next_file_string_table_offset; | |
141 | ||
142 | /* .o and NLM files contain unrelocated addresses which are based at | |
143 | 0. When non-zero, this flag disables some of the special cases for | |
0963b4bd | 144 | Solaris elf+stab text addresses at location 0. */ |
c906108c SS |
145 | |
146 | static int symfile_relocatable = 0; | |
147 | ||
81cc346d TT |
148 | /* When set, we are processing a .o file compiled by sun acc. This is |
149 | misnamed; it refers to all stabs-in-elf implementations which use | |
150 | N_UNDF the way Sun does, including Solaris gcc. Hopefully all | |
151 | stabs-in-elf implementations ever invented will choose to be | |
152 | compatible. */ | |
153 | ||
154 | static unsigned char processing_acc_compilation; | |
155 | ||
c906108c SS |
156 | \f |
157 | /* The lowest text address we have yet encountered. This is needed | |
158 | because in an a.out file, there is no header field which tells us | |
159 | what address the program is actually going to be loaded at, so we | |
160 | need to make guesses based on the symbols (which *are* relocated to | |
161 | reflect the address it will be loaded at). */ | |
162 | ||
163 | static CORE_ADDR lowest_text_address; | |
164 | ||
165 | /* Non-zero if there is any line number info in the objfile. Prevents | |
8763cede | 166 | dbx_end_psymtab from discarding an otherwise empty psymtab. */ |
c906108c SS |
167 | |
168 | static int has_line_numbers; | |
169 | ||
170 | /* Complaints about the symbols we have encountered. */ | |
171 | ||
23136709 KB |
172 | static void |
173 | unknown_symtype_complaint (const char *arg1) | |
174 | { | |
b98664d3 | 175 | complaint (_("unknown symbol type %s"), arg1); |
23136709 | 176 | } |
c906108c | 177 | |
23136709 KB |
178 | static void |
179 | lbrac_mismatch_complaint (int arg1) | |
180 | { | |
b98664d3 | 181 | complaint (_("N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d"), arg1); |
23136709 | 182 | } |
c906108c | 183 | |
23136709 KB |
184 | static void |
185 | repeated_header_complaint (const char *arg1, int arg2) | |
186 | { | |
b98664d3 | 187 | complaint (_("\"repeated\" header file %s not " |
3e43a32a | 188 | "previously seen, at symtab pos %d"), |
23136709 KB |
189 | arg1, arg2); |
190 | } | |
1f077a3e | 191 | |
7a292a7a SS |
192 | /* find_text_range --- find start and end of loadable code sections |
193 | ||
194 | The find_text_range function finds the shortest address range that | |
195 | encloses all sections containing executable code, and stores it in | |
196 | objfile's text_addr and text_size members. | |
197 | ||
198 | dbx_symfile_read will use this to finish off the partial symbol | |
199 | table, in some cases. */ | |
200 | ||
201 | static void | |
c5aa993b | 202 | find_text_range (bfd * sym_bfd, struct objfile *objfile) |
7a292a7a SS |
203 | { |
204 | asection *sec; | |
205 | int found_any = 0; | |
b9179dbc EZ |
206 | CORE_ADDR start = 0; |
207 | CORE_ADDR end = 0; | |
c5aa993b | 208 | |
7a292a7a | 209 | for (sec = sym_bfd->sections; sec; sec = sec->next) |
fd361982 | 210 | if (bfd_section_flags (sec) & SEC_CODE) |
7a292a7a | 211 | { |
fd361982 AM |
212 | CORE_ADDR sec_start = bfd_section_vma (sec); |
213 | CORE_ADDR sec_end = sec_start + bfd_section_size (sec); | |
7a292a7a SS |
214 | |
215 | if (found_any) | |
216 | { | |
c5aa993b JM |
217 | if (sec_start < start) |
218 | start = sec_start; | |
219 | if (sec_end > end) | |
220 | end = sec_end; | |
7a292a7a SS |
221 | } |
222 | else | |
223 | { | |
224 | start = sec_start; | |
225 | end = sec_end; | |
226 | } | |
227 | ||
228 | found_any = 1; | |
229 | } | |
230 | ||
c5aa993b | 231 | if (!found_any) |
8a3fe4f8 | 232 | error (_("Can't find any code sections in symbol file")); |
7a292a7a SS |
233 | |
234 | DBX_TEXT_ADDR (objfile) = start; | |
235 | DBX_TEXT_SIZE (objfile) = end - start; | |
236 | } | |
c5aa993b | 237 | \f |
7a292a7a SS |
238 | |
239 | ||
c906108c SS |
240 | /* During initial symbol readin, we need to have a structure to keep |
241 | track of which psymtabs have which bincls in them. This structure | |
242 | is used during readin to setup the list of dependencies within each | |
0963b4bd | 243 | partial symbol table. */ |
c906108c SS |
244 | |
245 | struct header_file_location | |
246 | { | |
bf259e25 | 247 | header_file_location (const char *name_, int instance_, |
891813be | 248 | legacy_psymtab *pst_) |
bf259e25 TT |
249 | : name (name_), |
250 | instance (instance_), | |
251 | pst (pst_) | |
252 | { | |
253 | } | |
254 | ||
a121b7c1 | 255 | const char *name; /* Name of header file */ |
c906108c | 256 | int instance; /* See above */ |
891813be | 257 | legacy_psymtab *pst; /* Partial symtab that has the |
0963b4bd | 258 | BINCL/EINCL defs for this file. */ |
c906108c SS |
259 | }; |
260 | ||
bf259e25 TT |
261 | /* The list of bincls. */ |
262 | static std::vector<struct header_file_location> *bincl_list; | |
c906108c | 263 | |
0963b4bd | 264 | /* Local function prototypes. */ |
c906108c | 265 | |
891813be | 266 | static void read_ofile_symtab (struct objfile *, legacy_psymtab *); |
c906108c | 267 | |
891813be | 268 | static void dbx_read_symtab (legacy_psymtab *self, |
257e7a09 | 269 | struct objfile *objfile); |
c906108c | 270 | |
69b037c3 | 271 | static void dbx_expand_psymtab (legacy_psymtab *, struct objfile *); |
c906108c | 272 | |
7e9c0476 TT |
273 | static void read_dbx_symtab (minimal_symbol_reader &, psymtab_storage *, |
274 | struct objfile *); | |
c906108c | 275 | |
891813be | 276 | static legacy_psymtab *find_corresponding_bincl_psymtab (const char *, |
a121b7c1 | 277 | int); |
c906108c | 278 | |
a121b7c1 | 279 | static const char *dbx_next_symbol_text (struct objfile *); |
c906108c | 280 | |
a14ed312 | 281 | static void fill_symbuf (bfd *); |
c906108c | 282 | |
a14ed312 | 283 | static void dbx_symfile_init (struct objfile *); |
c906108c | 284 | |
a14ed312 | 285 | static void dbx_new_init (struct objfile *); |
c906108c | 286 | |
b15cc25c | 287 | static void dbx_symfile_read (struct objfile *, symfile_add_flags); |
c906108c | 288 | |
a14ed312 | 289 | static void dbx_symfile_finish (struct objfile *); |
c906108c | 290 | |
8dddcb8f TT |
291 | static void record_minimal_symbol (minimal_symbol_reader &, |
292 | const char *, CORE_ADDR, int, | |
bec71544 | 293 | struct objfile *); |
c906108c | 294 | |
a121b7c1 | 295 | static void add_new_header_file (const char *, int); |
c906108c | 296 | |
a121b7c1 | 297 | static void add_old_header_file (const char *, int); |
c906108c | 298 | |
a14ed312 | 299 | static void add_this_object_header_file (int); |
c906108c | 300 | |
7b249e47 TT |
301 | static legacy_psymtab *start_psymtab (psymtab_storage *, struct objfile *, |
302 | const char *, CORE_ADDR, int); | |
d4f3574e | 303 | |
0963b4bd | 304 | /* Free up old header file tables. */ |
c906108c | 305 | |
d3d55eeb | 306 | void |
fba45db2 | 307 | free_header_files (void) |
c906108c SS |
308 | { |
309 | if (this_object_header_files) | |
310 | { | |
b8c9b27d | 311 | xfree (this_object_header_files); |
c906108c SS |
312 | this_object_header_files = NULL; |
313 | } | |
314 | n_allocated_this_object_header_files = 0; | |
315 | } | |
316 | ||
0963b4bd | 317 | /* Allocate new header file tables. */ |
c906108c | 318 | |
d3d55eeb | 319 | void |
fba45db2 | 320 | init_header_files (void) |
c906108c SS |
321 | { |
322 | n_allocated_this_object_header_files = 10; | |
8d749320 | 323 | this_object_header_files = XNEWVEC (int, 10); |
c906108c SS |
324 | } |
325 | ||
326 | /* Add header file number I for this object file | |
327 | at the next successive FILENUM. */ | |
328 | ||
329 | static void | |
fba45db2 | 330 | add_this_object_header_file (int i) |
c906108c SS |
331 | { |
332 | if (n_this_object_header_files == n_allocated_this_object_header_files) | |
333 | { | |
334 | n_allocated_this_object_header_files *= 2; | |
335 | this_object_header_files | |
336 | = (int *) xrealloc ((char *) this_object_header_files, | |
c5aa993b | 337 | n_allocated_this_object_header_files * sizeof (int)); |
c906108c SS |
338 | } |
339 | ||
340 | this_object_header_files[n_this_object_header_files++] = i; | |
341 | } | |
342 | ||
343 | /* Add to this file an "old" header file, one already seen in | |
344 | a previous object file. NAME is the header file's name. | |
345 | INSTANCE is its instance code, to select among multiple | |
346 | symbol tables for the same header file. */ | |
347 | ||
348 | static void | |
a121b7c1 | 349 | add_old_header_file (const char *name, int instance) |
c906108c | 350 | { |
dd707e8e | 351 | struct header_file *p = HEADER_FILES (dbxread_objfile); |
52f0bd74 | 352 | int i; |
c906108c | 353 | |
dd707e8e | 354 | for (i = 0; i < N_HEADER_FILES (dbxread_objfile); i++) |
0ba1096a | 355 | if (filename_cmp (p[i].name, name) == 0 && instance == p[i].instance) |
c906108c SS |
356 | { |
357 | add_this_object_header_file (i); | |
358 | return; | |
359 | } | |
23136709 | 360 | repeated_header_complaint (name, symnum); |
c906108c SS |
361 | } |
362 | ||
363 | /* Add to this file a "new" header file: definitions for its types follow. | |
364 | NAME is the header file's name. | |
365 | Most often this happens only once for each distinct header file, | |
366 | but not necessarily. If it happens more than once, INSTANCE has | |
367 | a different value each time, and references to the header file | |
368 | use INSTANCE values to select among them. | |
369 | ||
370 | dbx output contains "begin" and "end" markers for each new header file, | |
371 | but at this level we just need to know which files there have been; | |
372 | so we record the file when its "begin" is seen and ignore the "end". */ | |
373 | ||
374 | static void | |
a121b7c1 | 375 | add_new_header_file (const char *name, int instance) |
c906108c | 376 | { |
52f0bd74 AC |
377 | int i; |
378 | struct header_file *hfile; | |
c906108c SS |
379 | |
380 | /* Make sure there is room for one more header file. */ | |
381 | ||
dd707e8e | 382 | i = N_ALLOCATED_HEADER_FILES (dbxread_objfile); |
c906108c | 383 | |
dd707e8e | 384 | if (N_HEADER_FILES (dbxread_objfile) == i) |
c906108c SS |
385 | { |
386 | if (i == 0) | |
387 | { | |
dd707e8e TT |
388 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = 10; |
389 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
c906108c SS |
390 | xmalloc (10 * sizeof (struct header_file)); |
391 | } | |
392 | else | |
393 | { | |
394 | i *= 2; | |
dd707e8e TT |
395 | N_ALLOCATED_HEADER_FILES (dbxread_objfile) = i; |
396 | HEADER_FILES (dbxread_objfile) = (struct header_file *) | |
397 | xrealloc ((char *) HEADER_FILES (dbxread_objfile), | |
c906108c SS |
398 | (i * sizeof (struct header_file))); |
399 | } | |
400 | } | |
401 | ||
402 | /* Create an entry for this header file. */ | |
403 | ||
dd707e8e TT |
404 | i = N_HEADER_FILES (dbxread_objfile)++; |
405 | hfile = HEADER_FILES (dbxread_objfile) + i; | |
1b36a34b | 406 | hfile->name = xstrdup (name); |
c906108c SS |
407 | hfile->instance = instance; |
408 | hfile->length = 10; | |
8d749320 | 409 | hfile->vector = XCNEWVEC (struct type *, 10); |
c906108c SS |
410 | |
411 | add_this_object_header_file (i); | |
412 | } | |
413 | ||
414 | #if 0 | |
415 | static struct type ** | |
fba45db2 | 416 | explicit_lookup_type (int real_filenum, int index) |
c906108c | 417 | { |
dd707e8e | 418 | struct header_file *f = &HEADER_FILES (dbxread_objfile)[real_filenum]; |
c906108c SS |
419 | |
420 | if (index >= f->length) | |
421 | { | |
422 | f->length *= 2; | |
423 | f->vector = (struct type **) | |
424 | xrealloc (f->vector, f->length * sizeof (struct type *)); | |
425 | memset (&f->vector[f->length / 2], | |
c5aa993b | 426 | '\0', f->length * sizeof (struct type *) / 2); |
c906108c SS |
427 | } |
428 | return &f->vector[index]; | |
429 | } | |
430 | #endif | |
431 | \f | |
432 | static void | |
8dddcb8f TT |
433 | record_minimal_symbol (minimal_symbol_reader &reader, |
434 | const char *name, CORE_ADDR address, int type, | |
fba45db2 | 435 | struct objfile *objfile) |
c906108c SS |
436 | { |
437 | enum minimal_symbol_type ms_type; | |
438 | int section; | |
c906108c SS |
439 | |
440 | switch (type) | |
441 | { | |
442 | case N_TEXT | N_EXT: | |
443 | ms_type = mst_text; | |
b8fbeb18 | 444 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
445 | break; |
446 | case N_DATA | N_EXT: | |
447 | ms_type = mst_data; | |
b8fbeb18 | 448 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
449 | break; |
450 | case N_BSS | N_EXT: | |
451 | ms_type = mst_bss; | |
b8fbeb18 | 452 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
453 | break; |
454 | case N_ABS | N_EXT: | |
455 | ms_type = mst_abs; | |
456 | section = -1; | |
c906108c SS |
457 | break; |
458 | #ifdef N_SETV | |
459 | case N_SETV | N_EXT: | |
460 | ms_type = mst_data; | |
b8fbeb18 | 461 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
462 | break; |
463 | case N_SETV: | |
464 | /* I don't think this type actually exists; since a N_SETV is the result | |
dda83cd7 SM |
465 | of going over many .o files, it doesn't make sense to have one |
466 | file local. */ | |
c906108c | 467 | ms_type = mst_file_data; |
b8fbeb18 | 468 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
469 | break; |
470 | #endif | |
471 | case N_TEXT: | |
472 | case N_NBTEXT: | |
473 | case N_FN: | |
474 | case N_FN_SEQ: | |
475 | ms_type = mst_file_text; | |
b8fbeb18 | 476 | section = SECT_OFF_TEXT (objfile); |
c906108c SS |
477 | break; |
478 | case N_DATA: | |
479 | ms_type = mst_file_data; | |
480 | ||
481 | /* Check for __DYNAMIC, which is used by Sun shared libraries. | |
dda83cd7 SM |
482 | Record it as global even if it's local, not global, so |
483 | lookup_minimal_symbol can find it. We don't check symbol_leading_char | |
484 | because for SunOS4 it always is '_'. */ | |
91f54576 | 485 | if (name[8] == 'C' && strcmp ("__DYNAMIC", name) == 0) |
c906108c SS |
486 | ms_type = mst_data; |
487 | ||
488 | /* Same with virtual function tables, both global and static. */ | |
489 | { | |
bec71544 | 490 | const char *tempstring = name; |
9a619af0 | 491 | |
c906108c SS |
492 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)) |
493 | ++tempstring; | |
015a42b4 | 494 | if (is_vtable_name (tempstring)) |
c906108c SS |
495 | ms_type = mst_data; |
496 | } | |
b8fbeb18 | 497 | section = SECT_OFF_DATA (objfile); |
c906108c SS |
498 | break; |
499 | case N_BSS: | |
500 | ms_type = mst_file_bss; | |
b8fbeb18 | 501 | section = SECT_OFF_BSS (objfile); |
c906108c SS |
502 | break; |
503 | default: | |
504 | ms_type = mst_unknown; | |
505 | section = -1; | |
c906108c | 506 | break; |
c5aa993b | 507 | } |
c906108c SS |
508 | |
509 | if ((ms_type == mst_file_text || ms_type == mst_text) | |
510 | && address < lowest_text_address) | |
511 | lowest_text_address = address; | |
512 | ||
8dddcb8f | 513 | reader.record_with_info (name, address, ms_type, section); |
c906108c SS |
514 | } |
515 | \f | |
516 | /* Scan and build partial symbols for a symbol file. | |
517 | We have been initialized by a call to dbx_symfile_init, which | |
518 | put all the relevant info into a "struct dbx_symfile_info", | |
f4352531 | 519 | hung off the objfile structure. */ |
c906108c SS |
520 | |
521 | static void | |
b15cc25c | 522 | dbx_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
523 | { |
524 | bfd *sym_bfd; | |
525 | int val; | |
c906108c | 526 | |
c906108c SS |
527 | sym_bfd = objfile->obfd; |
528 | ||
529 | /* .o and .nlm files are relocatables with text, data and bss segs based at | |
530 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for | |
531 | symbols with a value of 0. */ | |
532 | ||
533 | symfile_relocatable = bfd_get_file_flags (sym_bfd) & HAS_RELOC; | |
534 | ||
c906108c SS |
535 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile), SEEK_SET); |
536 | if (val < 0) | |
4262abfb | 537 | perror_with_name (objfile_name (objfile)); |
c906108c | 538 | |
c906108c SS |
539 | symbol_size = DBX_SYMBOL_SIZE (objfile); |
540 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile); | |
541 | ||
33c7c59d | 542 | scoped_free_pendings free_pending; |
c906108c | 543 | |
d25e8719 | 544 | minimal_symbol_reader reader (objfile); |
c906108c | 545 | |
0963b4bd | 546 | /* Read stabs data from executable file and define symbols. */ |
c906108c | 547 | |
eb36a3eb TT |
548 | psymbol_functions *psf = new psymbol_functions (); |
549 | psymtab_storage *partial_symtabs = psf->get_partial_symtabs ().get (); | |
550 | objfile->qf.emplace_front (psf); | |
7e9c0476 | 551 | read_dbx_symtab (reader, partial_symtabs, objfile); |
c906108c | 552 | |
c906108c | 553 | /* Install any minimal symbols that have been collected as the current |
0963b4bd | 554 | minimal symbols for this objfile. */ |
c906108c | 555 | |
d25e8719 | 556 | reader.install (); |
c906108c SS |
557 | } |
558 | ||
559 | /* Initialize anything that needs initializing when a completely new | |
560 | symbol file is specified (not just adding some symbols from another | |
561 | file, e.g. a shared library). */ | |
562 | ||
563 | static void | |
fba45db2 | 564 | dbx_new_init (struct objfile *ignore) |
c906108c SS |
565 | { |
566 | stabsread_new_init (); | |
c906108c SS |
567 | init_header_files (); |
568 | } | |
569 | ||
570 | ||
571 | /* dbx_symfile_init () | |
572 | is the dbx-specific initialization routine for reading symbols. | |
573 | It is passed a struct objfile which contains, among other things, | |
574 | the BFD for the file whose symbols are being read, and a slot for a pointer | |
575 | to "private data" which we fill with goodies. | |
576 | ||
577 | We read the string table into malloc'd space and stash a pointer to it. | |
578 | ||
579 | Since BFD doesn't know how to read debug symbols in a format-independent | |
580 | way (and may never do so...), we have to do it ourselves. We will never | |
0963b4bd | 581 | be called unless this is an a.out (or very similar) file. |
c906108c SS |
582 | FIXME, there should be a cleaner peephole into the BFD environment here. */ |
583 | ||
c5aa993b | 584 | #define DBX_STRINGTAB_SIZE_SIZE sizeof(long) /* FIXME */ |
c906108c SS |
585 | |
586 | static void | |
fba45db2 | 587 | dbx_symfile_init (struct objfile *objfile) |
c906108c SS |
588 | { |
589 | int val; | |
590 | bfd *sym_bfd = objfile->obfd; | |
b16c44de | 591 | const char *name = bfd_get_filename (sym_bfd); |
c906108c SS |
592 | asection *text_sect; |
593 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZE]; | |
594 | ||
0963b4bd | 595 | /* Allocate struct to keep track of the symfile. */ |
22a20dca | 596 | dbx_objfile_data_key.emplace (objfile); |
c906108c SS |
597 | |
598 | DBX_TEXT_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".text"); | |
599 | DBX_DATA_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".data"); | |
600 | DBX_BSS_SECTION (objfile) = bfd_get_section_by_name (sym_bfd, ".bss"); | |
601 | ||
0963b4bd | 602 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c SS |
603 | #define STRING_TABLE_OFFSET (sym_bfd->origin + obj_str_filepos (sym_bfd)) |
604 | #define SYMBOL_TABLE_OFFSET (sym_bfd->origin + obj_sym_filepos (sym_bfd)) | |
605 | ||
0963b4bd | 606 | /* FIXME POKING INSIDE BFD DATA STRUCTURES. */ |
c906108c | 607 | |
c906108c SS |
608 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
609 | if (!text_sect) | |
8a3fe4f8 | 610 | error (_("Can't find .text section in symbol file")); |
fd361982 AM |
611 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (text_sect); |
612 | DBX_TEXT_SIZE (objfile) = bfd_section_size (text_sect); | |
c906108c SS |
613 | |
614 | DBX_SYMBOL_SIZE (objfile) = obj_symbol_entry_size (sym_bfd); | |
615 | DBX_SYMCOUNT (objfile) = bfd_get_symcount (sym_bfd); | |
616 | DBX_SYMTAB_OFFSET (objfile) = SYMBOL_TABLE_OFFSET; | |
617 | ||
8b92e4d5 EZ |
618 | /* Read the string table and stash it away in the objfile_obstack. |
619 | When we blow away the objfile the string table goes away as well. | |
c906108c SS |
620 | Note that gdb used to use the results of attempting to malloc the |
621 | string table, based on the size it read, as a form of sanity check | |
622 | for botched byte swapping, on the theory that a byte swapped string | |
623 | table size would be so totally bogus that the malloc would fail. Now | |
8b92e4d5 | 624 | that we put in on the objfile_obstack, we can't do this since gdb gets |
c906108c SS |
625 | a fatal error (out of virtual memory) if the size is bogus. We can |
626 | however at least check to see if the size is less than the size of | |
627 | the size field itself, or larger than the size of the entire file. | |
628 | Note that all valid string tables have a size greater than zero, since | |
0963b4bd | 629 | the bytes used to hold the size are included in the count. */ |
c906108c SS |
630 | |
631 | if (STRING_TABLE_OFFSET == 0) | |
632 | { | |
633 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET | |
dda83cd7 SM |
634 | will never be zero, even when there is no string table. This |
635 | would appear to be a bug in bfd. */ | |
c906108c SS |
636 | DBX_STRINGTAB_SIZE (objfile) = 0; |
637 | DBX_STRINGTAB (objfile) = NULL; | |
638 | } | |
639 | else | |
640 | { | |
641 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); | |
642 | if (val < 0) | |
643 | perror_with_name (name); | |
c5aa993b | 644 | |
4efb68b1 AC |
645 | memset (size_temp, 0, sizeof (size_temp)); |
646 | val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd); | |
c906108c SS |
647 | if (val < 0) |
648 | { | |
649 | perror_with_name (name); | |
650 | } | |
651 | else if (val == 0) | |
652 | { | |
653 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to | |
654 | EOF if there is no string table, and attempting to read the size | |
0963b4bd | 655 | from EOF will read zero bytes. */ |
c906108c SS |
656 | DBX_STRINGTAB_SIZE (objfile) = 0; |
657 | DBX_STRINGTAB (objfile) = NULL; | |
658 | } | |
659 | else | |
660 | { | |
661 | /* Read some data that would appear to be the string table size. | |
662 | If there really is a string table, then it is probably the right | |
663 | size. Byteswap if necessary and validate the size. Note that | |
664 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some | |
665 | random data that happened to be at STRING_TABLE_OFFSET, because | |
666 | bfd can't tell us there is no string table, the sanity checks may | |
0963b4bd | 667 | or may not catch this. */ |
c906108c | 668 | DBX_STRINGTAB_SIZE (objfile) = bfd_h_get_32 (sym_bfd, size_temp); |
c5aa993b | 669 | |
c906108c SS |
670 | if (DBX_STRINGTAB_SIZE (objfile) < sizeof (size_temp) |
671 | || DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) | |
8a3fe4f8 | 672 | error (_("ridiculous string table size (%d bytes)."), |
c906108c | 673 | DBX_STRINGTAB_SIZE (objfile)); |
c5aa993b | 674 | |
c906108c | 675 | DBX_STRINGTAB (objfile) = |
8b92e4d5 | 676 | (char *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
677 | DBX_STRINGTAB_SIZE (objfile)); |
678 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile)); | |
c5aa993b | 679 | |
c906108c | 680 | /* Now read in the string table in one big gulp. */ |
c5aa993b | 681 | |
c906108c SS |
682 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET, SEEK_SET); |
683 | if (val < 0) | |
684 | perror_with_name (name); | |
3a42e9d0 AM |
685 | val = bfd_bread (DBX_STRINGTAB (objfile), |
686 | DBX_STRINGTAB_SIZE (objfile), | |
687 | sym_bfd); | |
c906108c SS |
688 | if (val != DBX_STRINGTAB_SIZE (objfile)) |
689 | perror_with_name (name); | |
690 | } | |
691 | } | |
692 | } | |
693 | ||
694 | /* Perform any local cleanups required when we are done with a particular | |
695 | objfile. I.E, we are in the process of discarding all symbol information | |
696 | for an objfile, freeing up all memory held for it, and unlinking the | |
0963b4bd | 697 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
698 | |
699 | static void | |
fba45db2 | 700 | dbx_symfile_finish (struct objfile *objfile) |
c906108c | 701 | { |
d2f4b8fe TT |
702 | free_header_files (); |
703 | } | |
704 | ||
22a20dca | 705 | dbx_symfile_info::~dbx_symfile_info () |
d2f4b8fe | 706 | { |
22a20dca | 707 | if (header_files != NULL) |
c906108c | 708 | { |
22a20dca TT |
709 | int i = n_header_files; |
710 | struct header_file *hfiles = header_files; | |
c906108c | 711 | |
d2f4b8fe TT |
712 | while (--i >= 0) |
713 | { | |
714 | xfree (hfiles[i].name); | |
715 | xfree (hfiles[i].vector); | |
c906108c | 716 | } |
d2f4b8fe | 717 | xfree (hfiles); |
c906108c | 718 | } |
c906108c | 719 | } |
d2f4b8fe | 720 | |
c906108c | 721 | \f |
c5aa993b | 722 | |
c906108c SS |
723 | /* Buffer for reading the symbol table entries. */ |
724 | static struct external_nlist symbuf[4096]; | |
725 | static int symbuf_idx; | |
726 | static int symbuf_end; | |
727 | ||
c906108c SS |
728 | /* Name of last function encountered. Used in Solaris to approximate |
729 | object file boundaries. */ | |
a121b7c1 | 730 | static const char *last_function_name; |
c906108c SS |
731 | |
732 | /* The address in memory of the string table of the object file we are | |
733 | reading (which might not be the "main" object file, but might be a | |
734 | shared library or some other dynamically loaded thing). This is | |
735 | set by read_dbx_symtab when building psymtabs, and by | |
736 | read_ofile_symtab when building symtabs, and is used only by | |
737 | next_symbol_text. FIXME: If that is true, we don't need it when | |
738 | building psymtabs, right? */ | |
739 | static char *stringtab_global; | |
740 | ||
741 | /* These variables are used to control fill_symbuf when the stabs | |
742 | symbols are not contiguous (as may be the case when a COFF file is | |
743 | linked using --split-by-reloc). */ | |
e2a03548 TT |
744 | static const std::vector<asection *> *symbuf_sections; |
745 | static size_t sect_idx; | |
c906108c SS |
746 | static unsigned int symbuf_left; |
747 | static unsigned int symbuf_read; | |
748 | ||
086df311 DJ |
749 | /* This variable stores a global stabs buffer, if we read stabs into |
750 | memory in one chunk in order to process relocations. */ | |
751 | static bfd_byte *stabs_data; | |
752 | ||
c906108c SS |
753 | /* Refill the symbol table input buffer |
754 | and set the variables that control fetching entries from it. | |
755 | Reports an error if no data available. | |
756 | This function can read past the end of the symbol table | |
757 | (into the string table) but this does no harm. */ | |
758 | ||
759 | static void | |
fba45db2 | 760 | fill_symbuf (bfd *sym_bfd) |
c906108c SS |
761 | { |
762 | unsigned int count; | |
763 | int nbytes; | |
764 | ||
086df311 DJ |
765 | if (stabs_data) |
766 | { | |
767 | nbytes = sizeof (symbuf); | |
768 | if (nbytes > symbuf_left) | |
dda83cd7 | 769 | nbytes = symbuf_left; |
086df311 DJ |
770 | memcpy (symbuf, stabs_data + symbuf_read, nbytes); |
771 | } | |
772 | else if (symbuf_sections == NULL) | |
773 | { | |
774 | count = sizeof (symbuf); | |
775 | nbytes = bfd_bread (symbuf, count, sym_bfd); | |
776 | } | |
c906108c SS |
777 | else |
778 | { | |
779 | if (symbuf_left <= 0) | |
780 | { | |
e2a03548 | 781 | file_ptr filepos = (*symbuf_sections)[sect_idx]->filepos; |
9a619af0 | 782 | |
c906108c SS |
783 | if (bfd_seek (sym_bfd, filepos, SEEK_SET) != 0) |
784 | perror_with_name (bfd_get_filename (sym_bfd)); | |
fd361982 | 785 | symbuf_left = bfd_section_size ((*symbuf_sections)[sect_idx]); |
c906108c | 786 | symbol_table_offset = filepos - symbuf_read; |
e2a03548 | 787 | ++sect_idx; |
c906108c SS |
788 | } |
789 | ||
790 | count = symbuf_left; | |
791 | if (count > sizeof (symbuf)) | |
792 | count = sizeof (symbuf); | |
086df311 | 793 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
c906108c SS |
794 | } |
795 | ||
c906108c SS |
796 | if (nbytes < 0) |
797 | perror_with_name (bfd_get_filename (sym_bfd)); | |
798 | else if (nbytes == 0) | |
8a3fe4f8 | 799 | error (_("Premature end of file reading symbol table")); |
c906108c SS |
800 | symbuf_end = nbytes / symbol_size; |
801 | symbuf_idx = 0; | |
802 | symbuf_left -= nbytes; | |
803 | symbuf_read += nbytes; | |
804 | } | |
805 | ||
086df311 DJ |
806 | static void |
807 | stabs_seek (int sym_offset) | |
808 | { | |
809 | if (stabs_data) | |
810 | { | |
811 | symbuf_read += sym_offset; | |
812 | symbuf_left -= sym_offset; | |
813 | } | |
814 | else | |
815 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR); | |
816 | } | |
817 | ||
c906108c SS |
818 | #define INTERNALIZE_SYMBOL(intern, extern, abfd) \ |
819 | { \ | |
c906108c | 820 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx); \ |
83b94be5 AM |
821 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type); \ |
822 | (intern).n_other = 0; \ | |
c906108c | 823 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc); \ |
40b3352b L |
824 | if (bfd_get_sign_extend_vma (abfd)) \ |
825 | (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value); \ | |
826 | else \ | |
827 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value); \ | |
c906108c SS |
828 | } |
829 | ||
830 | /* Invariant: The symbol pointed to by symbuf_idx is the first one | |
831 | that hasn't been swapped. Swap the symbol at the same time | |
832 | that symbuf_idx is incremented. */ | |
833 | ||
834 | /* dbx allows the text of a symbol name to be continued into the | |
835 | next symbol name! When such a continuation is encountered | |
836 | (a \ at the end of the text of a name) | |
837 | call this function to get the continuation. */ | |
838 | ||
a121b7c1 | 839 | static const char * |
fba45db2 | 840 | dbx_next_symbol_text (struct objfile *objfile) |
c906108c SS |
841 | { |
842 | struct internal_nlist nlist; | |
843 | ||
844 | if (symbuf_idx == symbuf_end) | |
845 | fill_symbuf (symfile_bfd); | |
846 | ||
847 | symnum++; | |
c5aa993b | 848 | INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], symfile_bfd); |
c906108c SS |
849 | OBJSTAT (objfile, n_stabs++); |
850 | ||
851 | symbuf_idx++; | |
852 | ||
853 | return nlist.n_strx + stringtab_global + file_string_table_offset; | |
854 | } | |
855 | \f | |
c906108c SS |
856 | |
857 | /* Given a name, value pair, find the corresponding | |
858 | bincl in the list. Return the partial symtab associated | |
859 | with that header_file_location. */ | |
860 | ||
891813be | 861 | static legacy_psymtab * |
a121b7c1 | 862 | find_corresponding_bincl_psymtab (const char *name, int instance) |
c906108c | 863 | { |
52941706 | 864 | for (const header_file_location &bincl : *bincl_list) |
bf259e25 TT |
865 | if (bincl.instance == instance |
866 | && strcmp (name, bincl.name) == 0) | |
867 | return bincl.pst; | |
c906108c | 868 | |
23136709 | 869 | repeated_header_complaint (name, symnum); |
891813be | 870 | return (legacy_psymtab *) 0; |
c906108c SS |
871 | } |
872 | ||
6a34fd2f EZ |
873 | /* Set namestring based on nlist. If the string table index is invalid, |
874 | give a fake name, and print a single error message per symbol file read, | |
875 | rather than abort the symbol reading or flood the user with messages. */ | |
876 | ||
a121b7c1 | 877 | static const char * |
83b94be5 | 878 | set_namestring (struct objfile *objfile, const struct internal_nlist *nlist) |
6a34fd2f | 879 | { |
a121b7c1 | 880 | const char *namestring; |
6a34fd2f | 881 | |
5409dacf JK |
882 | if (nlist->n_strx + file_string_table_offset |
883 | >= DBX_STRINGTAB_SIZE (objfile) | |
884 | || nlist->n_strx + file_string_table_offset < nlist->n_strx) | |
6a34fd2f | 885 | { |
b98664d3 | 886 | complaint (_("bad string table offset in symbol %d"), |
23136709 | 887 | symnum); |
6a34fd2f EZ |
888 | namestring = "<bad string table offset>"; |
889 | } | |
890 | else | |
83b94be5 AM |
891 | namestring = (nlist->n_strx + file_string_table_offset |
892 | + DBX_STRINGTAB (objfile)); | |
6a34fd2f EZ |
893 | return namestring; |
894 | } | |
895 | ||
79748972 TT |
896 | static struct bound_minimal_symbol |
897 | find_stab_function (const char *namestring, const char *filename, | |
898 | struct objfile *objfile) | |
4867e41e | 899 | { |
3b7344d5 | 900 | struct bound_minimal_symbol msym; |
4867e41e DM |
901 | int n; |
902 | ||
a121b7c1 PA |
903 | const char *colon = strchr (namestring, ':'); |
904 | if (colon == NULL) | |
905 | n = 0; | |
906 | else | |
907 | n = colon - namestring; | |
908 | ||
909 | char *p = (char *) alloca (n + 2); | |
4867e41e DM |
910 | strncpy (p, namestring, n); |
911 | p[n] = 0; | |
912 | ||
913 | msym = lookup_minimal_symbol (p, filename, objfile); | |
3b7344d5 | 914 | if (msym.minsym == NULL) |
4867e41e DM |
915 | { |
916 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
dda83cd7 SM |
917 | try again with an appended underscore if the minimal symbol |
918 | was not found. */ | |
4867e41e DM |
919 | p[n] = '_'; |
920 | p[n + 1] = 0; | |
921 | msym = lookup_minimal_symbol (p, filename, objfile); | |
922 | } | |
923 | ||
3b7344d5 | 924 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 925 | { |
0963b4bd | 926 | /* Try again without the filename. */ |
4867e41e DM |
927 | p[n] = 0; |
928 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
929 | } | |
3b7344d5 | 930 | if (msym.minsym == NULL && filename != NULL) |
4867e41e | 931 | { |
0963b4bd | 932 | /* And try again for Sun Fortran, but without the filename. */ |
4867e41e DM |
933 | p[n] = '_'; |
934 | p[n + 1] = 0; | |
935 | msym = lookup_minimal_symbol (p, NULL, objfile); | |
936 | } | |
937 | ||
79748972 | 938 | return msym; |
4867e41e | 939 | } |
4867e41e | 940 | |
23136709 KB |
941 | static void |
942 | function_outside_compilation_unit_complaint (const char *arg1) | |
943 | { | |
b98664d3 | 944 | complaint (_("function `%s' appears to be defined " |
3e43a32a | 945 | "outside of all compilation units"), |
23136709 KB |
946 | arg1); |
947 | } | |
948 | ||
d4f3574e | 949 | /* Setup partial_symtab's describing each source file for which |
0963b4bd | 950 | debugging information is available. */ |
c906108c SS |
951 | |
952 | static void | |
7e9c0476 TT |
953 | read_dbx_symtab (minimal_symbol_reader &reader, |
954 | psymtab_storage *partial_symtabs, | |
955 | struct objfile *objfile) | |
c906108c | 956 | { |
08feed99 | 957 | struct gdbarch *gdbarch = objfile->arch (); |
0963b4bd | 958 | struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch. */ |
c906108c | 959 | struct internal_nlist nlist; |
d4f3574e SS |
960 | CORE_ADDR text_addr; |
961 | int text_size; | |
a121b7c1 | 962 | const char *sym_name; |
71c25dea | 963 | int sym_len; |
c906108c | 964 | |
a121b7c1 | 965 | const char *namestring; |
c906108c SS |
966 | int nsl; |
967 | int past_first_source_file = 0; | |
c906108c | 968 | CORE_ADDR last_function_start = 0; |
c906108c SS |
969 | bfd *abfd; |
970 | int textlow_not_set; | |
7c8a5605 | 971 | int data_sect_index; |
c906108c | 972 | |
0963b4bd | 973 | /* Current partial symtab. */ |
891813be | 974 | legacy_psymtab *pst; |
c906108c | 975 | |
0963b4bd | 976 | /* List of current psymtab's include files. */ |
0d5cff50 | 977 | const char **psymtab_include_list; |
c906108c SS |
978 | int includes_allocated; |
979 | int includes_used; | |
980 | ||
0963b4bd | 981 | /* Index within current psymtab dependency list. */ |
891813be | 982 | legacy_psymtab **dependency_list; |
c906108c SS |
983 | int dependencies_used, dependencies_allocated; |
984 | ||
d4f3574e SS |
985 | text_addr = DBX_TEXT_ADDR (objfile); |
986 | text_size = DBX_TEXT_SIZE (objfile); | |
987 | ||
c906108c SS |
988 | /* FIXME. We probably want to change stringtab_global rather than add this |
989 | while processing every symbol entry. FIXME. */ | |
990 | file_string_table_offset = 0; | |
991 | next_file_string_table_offset = 0; | |
992 | ||
993 | stringtab_global = DBX_STRINGTAB (objfile); | |
c5aa993b | 994 | |
891813be | 995 | pst = (legacy_psymtab *) 0; |
c906108c SS |
996 | |
997 | includes_allocated = 30; | |
998 | includes_used = 0; | |
0d5cff50 DE |
999 | psymtab_include_list = (const char **) alloca (includes_allocated * |
1000 | sizeof (const char *)); | |
c906108c SS |
1001 | |
1002 | dependencies_allocated = 30; | |
1003 | dependencies_used = 0; | |
1004 | dependency_list = | |
891813be TT |
1005 | (legacy_psymtab **) alloca (dependencies_allocated * |
1006 | sizeof (legacy_psymtab *)); | |
c906108c SS |
1007 | |
1008 | /* Init bincl list */ | |
bf259e25 TT |
1009 | std::vector<struct header_file_location> bincl_storage; |
1010 | scoped_restore restore_bincl_global | |
1011 | = make_scoped_restore (&bincl_list, &bincl_storage); | |
c906108c | 1012 | |
46212e0b | 1013 | set_last_source_file (NULL); |
c906108c | 1014 | |
96baa820 | 1015 | lowest_text_address = (CORE_ADDR) -1; |
c906108c | 1016 | |
0963b4bd | 1017 | symfile_bfd = objfile->obfd; /* For next_text_symbol. */ |
c906108c SS |
1018 | abfd = objfile->obfd; |
1019 | symbuf_end = symbuf_idx = 0; | |
1020 | next_symbol_text_func = dbx_next_symbol_text; | |
1021 | textlow_not_set = 1; | |
1022 | has_line_numbers = 0; | |
1023 | ||
4f49b26b JB |
1024 | /* FIXME: jimb/2003-09-12: We don't apply the right section's offset |
1025 | to global and static variables. The stab for a global or static | |
1026 | variable doesn't give us any indication of which section it's in, | |
1027 | so we can't tell immediately which offset in | |
1028 | objfile->section_offsets we should apply to the variable's | |
1029 | address. | |
1030 | ||
1031 | We could certainly find out which section contains the variable | |
1032 | by looking up the variable's unrelocated address with | |
1033 | find_pc_section, but that would be expensive; this is the | |
1034 | function that constructs the partial symbol tables by examining | |
1035 | every symbol in the entire executable, and it's | |
1036 | performance-critical. So that expense would not be welcome. I'm | |
1037 | not sure what to do about this at the moment. | |
1038 | ||
1039 | What we have done for years is to simply assume that the .data | |
1040 | section's offset is appropriate for all global and static | |
1041 | variables. Recently, this was expanded to fall back to the .bss | |
1042 | section's offset if there is no .data section, and then to the | |
1043 | .rodata section's offset. */ | |
7c8a5605 JB |
1044 | data_sect_index = objfile->sect_index_data; |
1045 | if (data_sect_index == -1) | |
1046 | data_sect_index = SECT_OFF_BSS (objfile); | |
2a13f9bc JB |
1047 | if (data_sect_index == -1) |
1048 | data_sect_index = SECT_OFF_RODATA (objfile); | |
d646061f JB |
1049 | |
1050 | /* If data_sect_index is still -1, that's okay. It's perfectly fine | |
1051 | for the file to have no .data, no .bss, and no .text at all, if | |
6a053cb1 | 1052 | it also has no global or static variables. */ |
7c8a5605 | 1053 | |
c906108c SS |
1054 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile); symnum++) |
1055 | { | |
0963b4bd MS |
1056 | /* Get the symbol for this run and pull out some info. */ |
1057 | QUIT; /* Allow this to be interruptable. */ | |
c906108c SS |
1058 | if (symbuf_idx == symbuf_end) |
1059 | fill_symbuf (abfd); | |
1060 | bufp = &symbuf[symbuf_idx++]; | |
1061 | ||
1062 | /* | |
1063 | * Special case to speed up readin. | |
1064 | */ | |
1065 | if (bfd_h_get_8 (abfd, bufp->e_type) == N_SLINE) | |
1066 | { | |
1067 | has_line_numbers = 1; | |
1068 | continue; | |
1069 | } | |
1070 | ||
1071 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
1072 | OBJSTAT (objfile, n_stabs++); | |
1073 | ||
1074 | /* Ok. There is a lot of code duplicated in the rest of this | |
dda83cd7 SM |
1075 | switch statement (for efficiency reasons). Since I don't |
1076 | like duplicating code, I will do my penance here, and | |
1077 | describe the code which is duplicated: | |
c906108c | 1078 | |
dda83cd7 SM |
1079 | *) The assignment to namestring. |
1080 | *) The call to strchr. | |
1081 | *) The addition of a partial symbol the two partial | |
1082 | symbol lists. This last is a large section of code, so | |
1083 | I've imbedded it in the following macro. */ | |
c5aa993b | 1084 | |
6a34fd2f EZ |
1085 | switch (nlist.n_type) |
1086 | { | |
6a34fd2f EZ |
1087 | /* |
1088 | * Standard, external, non-debugger, symbols | |
1089 | */ | |
1090 | ||
9ce5d3bb DE |
1091 | case N_TEXT | N_EXT: |
1092 | case N_NBTEXT | N_EXT: | |
6a34fd2f EZ |
1093 | goto record_it; |
1094 | ||
9ce5d3bb DE |
1095 | case N_DATA | N_EXT: |
1096 | case N_NBDATA | N_EXT: | |
6a34fd2f EZ |
1097 | goto record_it; |
1098 | ||
9ce5d3bb DE |
1099 | case N_BSS: |
1100 | case N_BSS | N_EXT: | |
1101 | case N_NBBSS | N_EXT: | |
1102 | case N_SETV | N_EXT: /* FIXME, is this in BSS? */ | |
6a34fd2f EZ |
1103 | goto record_it; |
1104 | ||
9ce5d3bb | 1105 | case N_ABS | N_EXT: |
6a34fd2f | 1106 | record_it: |
83b94be5 | 1107 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1108 | |
8dddcb8f | 1109 | record_minimal_symbol (reader, namestring, nlist.n_value, |
6a34fd2f EZ |
1110 | nlist.n_type, objfile); /* Always */ |
1111 | continue; | |
1112 | ||
0963b4bd | 1113 | /* Standard, local, non-debugger, symbols. */ |
6a34fd2f | 1114 | |
9ce5d3bb | 1115 | case N_NBTEXT: |
6a34fd2f EZ |
1116 | |
1117 | /* We need to be able to deal with both N_FN or N_TEXT, | |
1118 | because we have no way of knowing whether the sys-supplied ld | |
1119 | or GNU ld was used to make the executable. Sequents throw | |
1120 | in another wrinkle -- they renumbered N_FN. */ | |
1121 | ||
9ce5d3bb DE |
1122 | case N_FN: |
1123 | case N_FN_SEQ: | |
1124 | case N_TEXT: | |
83b94be5 | 1125 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1126 | |
1127 | if ((namestring[0] == '-' && namestring[1] == 'l') | |
1128 | || (namestring[(nsl = strlen (namestring)) - 1] == 'o' | |
1129 | && namestring[nsl - 2] == '.')) | |
9ce5d3bb DE |
1130 | { |
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. */ | |
79748972 | 1134 | && nlist.n_value >= 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, |
79748972 TT |
1139 | nlist.n_value > pst->raw_text_high () |
1140 | ? nlist.n_value : 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 | { | |
7e9c0476 TT |
1252 | dbx_end_psymtab (objfile, partial_symtabs, |
1253 | pst, psymtab_include_list, | |
8763cede | 1254 | includes_used, symnum * symbol_size, |
79748972 TT |
1255 | (valu > pst->raw_text_high () |
1256 | ? valu : pst->raw_text_high ()), | |
8763cede DE |
1257 | dependency_list, dependencies_used, |
1258 | prev_textlow_not_set); | |
891813be | 1259 | pst = (legacy_psymtab *) 0; |
6a34fd2f EZ |
1260 | includes_used = 0; |
1261 | dependencies_used = 0; | |
578933ab | 1262 | has_line_numbers = 0; |
6a34fd2f EZ |
1263 | } |
1264 | } | |
1265 | ||
1266 | prev_so_symnum = symnum; | |
1267 | ||
0963b4bd | 1268 | /* End the current partial symtab and start a new one. */ |
6a34fd2f | 1269 | |
83b94be5 | 1270 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f | 1271 | |
0963b4bd | 1272 | /* Null name means end of .o file. Don't start a new one. */ |
6a34fd2f EZ |
1273 | if (*namestring == '\000') |
1274 | continue; | |
1275 | ||
1276 | /* Some compilers (including gcc) emit a pair of initial N_SOs. | |
1277 | The first one is a directory name; the second the file name. | |
1278 | If pst exists, is empty, and has a filename ending in '/', | |
0963b4bd | 1279 | we assume the previous N_SO was a directory name. */ |
6a34fd2f | 1280 | |
0ba1096a KT |
1281 | p = lbasename (namestring); |
1282 | if (p != namestring && *p == '\000') | |
57c22c6c BR |
1283 | { |
1284 | /* Save the directory name SOs locally, then save it into | |
0963b4bd | 1285 | the psymtab when it's created below. */ |
dda83cd7 SM |
1286 | dirname_nso = namestring; |
1287 | continue; | |
57c22c6c | 1288 | } |
6a34fd2f EZ |
1289 | |
1290 | /* Some other compilers (C++ ones in particular) emit useless | |
131fe1bb DE |
1291 | SOs for non-existant .c files. We ignore all subsequent SOs |
1292 | that immediately follow the first. */ | |
6a34fd2f EZ |
1293 | |
1294 | if (!pst) | |
57c22c6c | 1295 | { |
7b249e47 | 1296 | pst = start_psymtab (partial_symtabs, objfile, |
9ce5d3bb | 1297 | namestring, valu, |
939652a5 | 1298 | first_so_symnum * symbol_size); |
57c22c6c BR |
1299 | pst->dirname = dirname_nso; |
1300 | dirname_nso = NULL; | |
1301 | } | |
6a34fd2f EZ |
1302 | continue; |
1303 | } | |
1304 | ||
9ce5d3bb | 1305 | case N_BINCL: |
6a34fd2f EZ |
1306 | { |
1307 | enum language tmp_language; | |
9a619af0 | 1308 | |
6a34fd2f EZ |
1309 | /* Add this bincl to the bincl_list for future EXCLs. No |
1310 | need to save the string; it'll be around until | |
0963b4bd | 1311 | read_dbx_symtab function returns. */ |
6a34fd2f | 1312 | |
83b94be5 | 1313 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1314 | tmp_language = deduce_language_from_filename (namestring); |
1315 | ||
1316 | /* Only change the psymtab's language if we've learned | |
1317 | something useful (eg. tmp_language is not language_unknown). | |
1318 | In addition, to match what start_subfile does, never change | |
1319 | from C++ to C. */ | |
1320 | if (tmp_language != language_unknown | |
1321 | && (tmp_language != language_c | |
1322 | || psymtab_language != language_cplus)) | |
d7f98cce | 1323 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1324 | |
1325 | if (pst == NULL) | |
9ce5d3bb DE |
1326 | { |
1327 | /* FIXME: we should not get here without a PST to work on. | |
1328 | Attempt to recover. */ | |
b98664d3 | 1329 | complaint (_("N_BINCL %s not in entries for " |
3e43a32a | 1330 | "any file, at symtab pos %d"), |
9ce5d3bb DE |
1331 | namestring, symnum); |
1332 | continue; | |
1333 | } | |
bf259e25 | 1334 | bincl_list->emplace_back (namestring, nlist.n_value, pst); |
6a34fd2f | 1335 | |
0963b4bd | 1336 | /* Mark down an include file in the current psymtab. */ |
6a34fd2f EZ |
1337 | |
1338 | goto record_include_file; | |
1339 | } | |
1340 | ||
9ce5d3bb | 1341 | case N_SOL: |
6a34fd2f EZ |
1342 | { |
1343 | enum language tmp_language; | |
6a34fd2f | 1344 | |
0963b4bd | 1345 | /* Mark down an include file in the current psymtab. */ |
83b94be5 | 1346 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1347 | tmp_language = deduce_language_from_filename (namestring); |
1348 | ||
1349 | /* Only change the psymtab's language if we've learned | |
1350 | something useful (eg. tmp_language is not language_unknown). | |
1351 | In addition, to match what start_subfile does, never change | |
1352 | from C++ to C. */ | |
1353 | if (tmp_language != language_unknown | |
1354 | && (tmp_language != language_c | |
1355 | || psymtab_language != language_cplus)) | |
d7f98cce | 1356 | psymtab_language = tmp_language; |
6a34fd2f EZ |
1357 | |
1358 | /* In C++, one may expect the same filename to come round many | |
1359 | times, when code is coming alternately from the main file | |
0963b4bd | 1360 | and from inline functions in other files. So I check to see |
6a34fd2f EZ |
1361 | if this is a file we've seen before -- either the main |
1362 | source file, or a previously included file. | |
1363 | ||
1364 | This seems to be a lot of time to be spending on N_SOL, but | |
1365 | things like "break c-exp.y:435" need to work (I | |
1366 | suppose the psymtab_include_list could be hashed or put | |
1367 | in a binary tree, if profiling shows this is a major hog). */ | |
0ba1096a | 1368 | if (pst && filename_cmp (namestring, pst->filename) == 0) |
9ce5d3bb | 1369 | continue; |
6a34fd2f | 1370 | { |
aa1ee363 | 1371 | int i; |
9a619af0 | 1372 | |
6a34fd2f | 1373 | for (i = 0; i < includes_used; i++) |
0ba1096a | 1374 | if (filename_cmp (namestring, psymtab_include_list[i]) == 0) |
6a34fd2f EZ |
1375 | { |
1376 | i = -1; | |
1377 | break; | |
1378 | } | |
1379 | if (i == -1) | |
1380 | continue; | |
1381 | } | |
1382 | ||
9ce5d3bb | 1383 | record_include_file: |
6a34fd2f EZ |
1384 | |
1385 | psymtab_include_list[includes_used++] = namestring; | |
1386 | if (includes_used >= includes_allocated) | |
9ce5d3bb | 1387 | { |
0d5cff50 | 1388 | const char **orig = psymtab_include_list; |
6a34fd2f | 1389 | |
0d5cff50 DE |
1390 | psymtab_include_list = (const char **) |
1391 | alloca ((includes_allocated *= 2) * sizeof (const char *)); | |
9ce5d3bb | 1392 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 1393 | includes_used * sizeof (const char *)); |
9ce5d3bb | 1394 | } |
6a34fd2f EZ |
1395 | continue; |
1396 | } | |
0963b4bd MS |
1397 | case N_LSYM: /* Typedef or automatic variable. */ |
1398 | case N_STSYM: /* Data seg var -- static. */ | |
9ce5d3bb DE |
1399 | case N_LCSYM: /* BSS " */ |
1400 | case N_ROSYM: /* Read-only data seg var -- static. */ | |
1401 | case N_NBSTS: /* Gould nobase. */ | |
1402 | case N_NBLCS: /* symbols. */ | |
1403 | case N_FUN: | |
1404 | case N_GSYM: /* Global (extern) variable; can be | |
063e58ba | 1405 | data or bss (sigh FIXME). */ |
6a34fd2f EZ |
1406 | |
1407 | /* Following may probably be ignored; I'll leave them here | |
1408 | for now (until I do Pascal and Modula 2 extensions). */ | |
1409 | ||
9ce5d3bb | 1410 | case N_PC: /* I may or may not need this; I |
063e58ba | 1411 | suspect not. */ |
0963b4bd | 1412 | case N_M2C: /* I suspect that I can ignore this here. */ |
9ce5d3bb | 1413 | case N_SCOPE: /* Same. */ |
131fe1bb | 1414 | { |
a121b7c1 | 1415 | const char *p; |
6a34fd2f | 1416 | |
83b94be5 | 1417 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1418 | |
1419 | /* See if this is an end of function stab. */ | |
1420 | if (pst && nlist.n_type == N_FUN && *namestring == '\000') | |
9ce5d3bb DE |
1421 | { |
1422 | CORE_ADDR valu; | |
1423 | ||
1424 | /* It's value is the size (in bytes) of the function for | |
1425 | function relative stabs, or the address of the function's | |
1426 | end for old style stabs. */ | |
1427 | valu = nlist.n_value + last_function_start; | |
79748972 | 1428 | if (pst->raw_text_high () == 0 || valu > pst->raw_text_high ()) |
4ae976d1 | 1429 | pst->set_text_high (valu); |
9ce5d3bb DE |
1430 | break; |
1431 | } | |
6a34fd2f EZ |
1432 | |
1433 | p = (char *) strchr (namestring, ':'); | |
1434 | if (!p) | |
0963b4bd | 1435 | continue; /* Not a debugging symbol. */ |
6a34fd2f | 1436 | |
71c25dea | 1437 | sym_len = 0; |
87bc73ea | 1438 | sym_name = NULL; /* pacify "gcc -Werror" */ |
71c25dea TT |
1439 | if (psymtab_language == language_cplus) |
1440 | { | |
2f408ecb | 1441 | std::string name (namestring, p - namestring); |
596dc4ad TT |
1442 | gdb::unique_xmalloc_ptr<char> new_name |
1443 | = cp_canonicalize_string (name.c_str ()); | |
1444 | if (new_name != nullptr) | |
2f408ecb | 1445 | { |
596dc4ad | 1446 | sym_len = strlen (new_name.get ()); |
efba19b0 | 1447 | sym_name = obstack_strdup (&objfile->objfile_obstack, |
596dc4ad | 1448 | new_name.get ()); |
2f408ecb PA |
1449 | } |
1450 | } | |
71c25dea TT |
1451 | |
1452 | if (sym_len == 0) | |
1453 | { | |
1454 | sym_name = namestring; | |
1455 | sym_len = p - namestring; | |
1456 | } | |
1457 | ||
6a34fd2f EZ |
1458 | /* Main processing section for debugging symbols which |
1459 | the initial read through the symbol tables needs to worry | |
1460 | about. If we reach this point, the symbol which we are | |
1461 | considering is definitely one we are interested in. | |
1462 | p must also contain the (valid) index into the namestring | |
1463 | which indicates the debugging type symbol. */ | |
1464 | ||
1465 | switch (p[1]) | |
9ce5d3bb DE |
1466 | { |
1467 | case 'S': | |
932539d7 TT |
1468 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), true, |
1469 | VAR_DOMAIN, LOC_STATIC, | |
1470 | data_sect_index, | |
1471 | psymbol_placement::STATIC, | |
7b249e47 TT |
1472 | nlist.n_value, psymtab_language, |
1473 | partial_symtabs, objfile); | |
9ce5d3bb | 1474 | continue; |
131fe1bb | 1475 | |
9ce5d3bb | 1476 | case 'G': |
9ce5d3bb | 1477 | /* The addresses in these entries are reported to be |
0963b4bd | 1478 | wrong. See the code that reads 'G's for symtabs. */ |
932539d7 TT |
1479 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), true, |
1480 | VAR_DOMAIN, LOC_STATIC, | |
1481 | data_sect_index, | |
1482 | psymbol_placement::GLOBAL, | |
7b249e47 TT |
1483 | nlist.n_value, psymtab_language, |
1484 | partial_symtabs, objfile); | |
9ce5d3bb | 1485 | continue; |
6a34fd2f | 1486 | |
9ce5d3bb DE |
1487 | case 'T': |
1488 | /* When a 'T' entry is defining an anonymous enum, it | |
1489 | may have a name which is the empty string, or a | |
1490 | single space. Since they're not really defining a | |
1491 | symbol, those shouldn't go in the partial symbol | |
1492 | table. We do pick up the elements of such enums at | |
1493 | 'check_enum:', below. */ | |
1494 | if (p >= namestring + 2 | |
1495 | || (p == namestring + 1 | |
1496 | && namestring[0] != ' ')) | |
1497 | { | |
932539d7 TT |
1498 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), |
1499 | true, STRUCT_DOMAIN, LOC_TYPEDEF, -1, | |
1500 | psymbol_placement::STATIC, | |
7b249e47 TT |
1501 | 0, psymtab_language, |
1502 | partial_symtabs, objfile); | |
9ce5d3bb DE |
1503 | if (p[2] == 't') |
1504 | { | |
1505 | /* Also a typedef with the same name. */ | |
932539d7 TT |
1506 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), |
1507 | true, VAR_DOMAIN, LOC_TYPEDEF, -1, | |
1508 | psymbol_placement::STATIC, | |
7b249e47 TT |
1509 | 0, psymtab_language, |
1510 | partial_symtabs, objfile); | |
9ce5d3bb DE |
1511 | p += 1; |
1512 | } | |
1513 | } | |
1514 | goto check_enum; | |
131fe1bb | 1515 | |
9ce5d3bb | 1516 | case 't': |
0963b4bd | 1517 | if (p != namestring) /* a name is there, not just :T... */ |
9ce5d3bb | 1518 | { |
932539d7 TT |
1519 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), |
1520 | true, VAR_DOMAIN, LOC_TYPEDEF, -1, | |
1521 | psymbol_placement::STATIC, | |
7b249e47 TT |
1522 | 0, psymtab_language, |
1523 | partial_symtabs, objfile); | |
9ce5d3bb DE |
1524 | } |
1525 | check_enum: | |
1526 | /* If this is an enumerated type, we need to | |
1527 | add all the enum constants to the partial symbol | |
1528 | table. This does not cover enums without names, e.g. | |
1529 | "enum {a, b} c;" in C, but fortunately those are | |
1530 | rare. There is no way for GDB to find those from the | |
1531 | enum type without spending too much time on it. Thus | |
1532 | to solve this problem, the compiler needs to put out the | |
1533 | enum in a nameless type. GCC2 does this. */ | |
1534 | ||
1535 | /* We are looking for something of the form | |
1536 | <name> ":" ("t" | "T") [<number> "="] "e" | |
1537 | {<constant> ":" <value> ","} ";". */ | |
1538 | ||
1539 | /* Skip over the colon and the 't' or 'T'. */ | |
1540 | p += 2; | |
1541 | /* This type may be given a number. Also, numbers can come | |
1542 | in pairs like (0,26). Skip over it. */ | |
1543 | while ((*p >= '0' && *p <= '9') | |
1544 | || *p == '(' || *p == ',' || *p == ')' | |
1545 | || *p == '=') | |
1546 | p++; | |
1547 | ||
1548 | if (*p++ == 'e') | |
1549 | { | |
1550 | /* The aix4 compiler emits extra crud before the members. */ | |
1551 | if (*p == '-') | |
1552 | { | |
1553 | /* Skip over the type (?). */ | |
1554 | while (*p != ':') | |
1555 | p++; | |
6a34fd2f | 1556 | |
9ce5d3bb | 1557 | /* Skip over the colon. */ |
6a34fd2f | 1558 | p++; |
9ce5d3bb | 1559 | } |
6a34fd2f | 1560 | |
9ce5d3bb DE |
1561 | /* We have found an enumerated type. */ |
1562 | /* According to comments in read_enum_type | |
1563 | a comma could end it instead of a semicolon. | |
1564 | I don't know where that happens. | |
1565 | Accept either. */ | |
1566 | while (*p && *p != ';' && *p != ',') | |
1567 | { | |
a121b7c1 | 1568 | const char *q; |
9ce5d3bb DE |
1569 | |
1570 | /* Check for and handle cretinous dbx symbol name | |
1571 | continuation! */ | |
1572 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
1573 | p = next_symbol_text (objfile); | |
1574 | ||
1575 | /* Point to the character after the name | |
1576 | of the enum constant. */ | |
1577 | for (q = p; *q && *q != ':'; q++) | |
1578 | ; | |
1579 | /* Note that the value doesn't matter for | |
1580 | enum constants in psymtabs, just in symtabs. */ | |
932539d7 TT |
1581 | pst->add_psymbol (gdb::string_view (p, q - p), true, |
1582 | VAR_DOMAIN, LOC_CONST, -1, | |
1583 | psymbol_placement::STATIC, 0, | |
7b249e47 TT |
1584 | psymtab_language, |
1585 | partial_symtabs, objfile); | |
9ce5d3bb DE |
1586 | /* Point past the name. */ |
1587 | p = q; | |
1588 | /* Skip over the value. */ | |
1589 | while (*p && *p != ',') | |
1590 | p++; | |
1591 | /* Advance past the comma. */ | |
1592 | if (*p) | |
1593 | p++; | |
1594 | } | |
1595 | } | |
1596 | continue; | |
131fe1bb | 1597 | |
9ce5d3bb DE |
1598 | case 'c': |
1599 | /* Constant, e.g. from "const" in Pascal. */ | |
932539d7 TT |
1600 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), true, |
1601 | VAR_DOMAIN, LOC_CONST, -1, | |
1602 | psymbol_placement::STATIC, 0, | |
7b249e47 TT |
1603 | psymtab_language, |
1604 | partial_symtabs, objfile); | |
9ce5d3bb | 1605 | continue; |
6a34fd2f | 1606 | |
9ce5d3bb DE |
1607 | case 'f': |
1608 | if (! pst) | |
1609 | { | |
1610 | int name_len = p - namestring; | |
224c3ddb | 1611 | char *name = (char *) xmalloc (name_len + 1); |
9a619af0 | 1612 | |
9ce5d3bb DE |
1613 | memcpy (name, namestring, name_len); |
1614 | name[name_len] = '\0'; | |
1615 | function_outside_compilation_unit_complaint (name); | |
1616 | xfree (name); | |
1617 | } | |
0963b4bd | 1618 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1619 | last_function_name = namestring; |
1620 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1621 | value for the bottom of the text seg in those cases. */ |
79748972 | 1622 | if (nlist.n_value == 0 |
5e2b427d | 1623 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1624 | { |
79748972 TT |
1625 | struct bound_minimal_symbol minsym |
1626 | = find_stab_function (namestring, | |
1627 | pst ? pst->filename : NULL, | |
1628 | objfile); | |
1629 | if (minsym.minsym != NULL) | |
1630 | nlist.n_value = MSYMBOL_VALUE_RAW_ADDRESS (minsym.minsym); | |
9ce5d3bb DE |
1631 | } |
1632 | if (pst && textlow_not_set | |
5e2b427d | 1633 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1634 | { |
4ae976d1 | 1635 | pst->set_text_low (nlist.n_value); |
9ce5d3bb DE |
1636 | textlow_not_set = 0; |
1637 | } | |
1638 | /* End kludge. */ | |
1639 | ||
1640 | /* Keep track of the start of the last function so we | |
1641 | can handle end of function symbols. */ | |
1642 | last_function_start = nlist.n_value; | |
1643 | ||
1644 | /* In reordered executables this function may lie outside | |
1645 | the bounds created by N_SO symbols. If that's the case | |
1646 | use the address of this function as the low bound for | |
1647 | the partial symbol table. */ | |
1648 | if (pst | |
1649 | && (textlow_not_set | |
79748972 TT |
1650 | || (nlist.n_value < pst->raw_text_low () |
1651 | && (nlist.n_value != 0)))) | |
9ce5d3bb | 1652 | { |
4ae976d1 | 1653 | pst->set_text_low (nlist.n_value); |
9ce5d3bb DE |
1654 | textlow_not_set = 0; |
1655 | } | |
932539d7 TT |
1656 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), true, |
1657 | VAR_DOMAIN, LOC_BLOCK, | |
1658 | SECT_OFF_TEXT (objfile), | |
1659 | psymbol_placement::STATIC, | |
7b249e47 TT |
1660 | nlist.n_value, psymtab_language, |
1661 | partial_symtabs, objfile); | |
9ce5d3bb | 1662 | continue; |
6a34fd2f | 1663 | |
9ce5d3bb DE |
1664 | /* Global functions were ignored here, but now they |
1665 | are put into the global psymtab like one would expect. | |
1666 | They're also in the minimal symbol table. */ | |
1667 | case 'F': | |
1668 | if (! pst) | |
1669 | { | |
1670 | int name_len = p - namestring; | |
224c3ddb | 1671 | char *name = (char *) xmalloc (name_len + 1); |
9a619af0 | 1672 | |
9ce5d3bb DE |
1673 | memcpy (name, namestring, name_len); |
1674 | name[name_len] = '\0'; | |
1675 | function_outside_compilation_unit_complaint (name); | |
1676 | xfree (name); | |
1677 | } | |
0963b4bd | 1678 | /* Kludges for ELF/STABS with Sun ACC. */ |
9ce5d3bb DE |
1679 | last_function_name = namestring; |
1680 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit | |
0963b4bd | 1681 | value for the bottom of the text seg in those cases. */ |
79748972 | 1682 | if (nlist.n_value == 0 |
5e2b427d | 1683 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1684 | { |
79748972 TT |
1685 | struct bound_minimal_symbol minsym |
1686 | = find_stab_function (namestring, | |
1687 | pst ? pst->filename : NULL, | |
1688 | objfile); | |
1689 | if (minsym.minsym != NULL) | |
1690 | nlist.n_value = MSYMBOL_VALUE_RAW_ADDRESS (minsym.minsym); | |
9ce5d3bb DE |
1691 | } |
1692 | if (pst && textlow_not_set | |
5e2b427d | 1693 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1694 | { |
4ae976d1 | 1695 | pst->set_text_low (nlist.n_value); |
9ce5d3bb DE |
1696 | textlow_not_set = 0; |
1697 | } | |
1698 | /* End kludge. */ | |
1699 | ||
1700 | /* Keep track of the start of the last function so we | |
1701 | can handle end of function symbols. */ | |
1702 | last_function_start = nlist.n_value; | |
1703 | ||
1704 | /* In reordered executables this function may lie outside | |
1705 | the bounds created by N_SO symbols. If that's the case | |
1706 | use the address of this function as the low bound for | |
1707 | the partial symbol table. */ | |
1708 | if (pst | |
1709 | && (textlow_not_set | |
79748972 TT |
1710 | || (nlist.n_value < pst->raw_text_low () |
1711 | && (nlist.n_value != 0)))) | |
9ce5d3bb | 1712 | { |
4ae976d1 | 1713 | pst->set_text_low (nlist.n_value); |
9ce5d3bb DE |
1714 | textlow_not_set = 0; |
1715 | } | |
932539d7 TT |
1716 | pst->add_psymbol (gdb::string_view (sym_name, sym_len), true, |
1717 | VAR_DOMAIN, LOC_BLOCK, | |
1718 | SECT_OFF_TEXT (objfile), | |
1719 | psymbol_placement::GLOBAL, | |
7b249e47 TT |
1720 | nlist.n_value, psymtab_language, |
1721 | partial_symtabs, objfile); | |
9ce5d3bb | 1722 | continue; |
6a34fd2f | 1723 | |
9ce5d3bb DE |
1724 | /* Two things show up here (hopefully); static symbols of |
1725 | local scope (static used inside braces) or extensions | |
1726 | of structure symbols. We can ignore both. */ | |
1727 | case 'V': | |
1728 | case '(': | |
1729 | case '0': | |
1730 | case '1': | |
1731 | case '2': | |
1732 | case '3': | |
1733 | case '4': | |
1734 | case '5': | |
1735 | case '6': | |
1736 | case '7': | |
1737 | case '8': | |
1738 | case '9': | |
1739 | case '-': | |
0963b4bd | 1740 | case '#': /* For symbol identification (used in live ranges). */ |
9ce5d3bb | 1741 | continue; |
6a34fd2f | 1742 | |
9ce5d3bb DE |
1743 | case ':': |
1744 | /* It is a C++ nested symbol. We don't need to record it | |
1745 | (I don't think); if we try to look up foo::bar::baz, | |
1746 | then symbols for the symtab containing foo should get | |
1747 | read in, I think. */ | |
1748 | /* Someone says sun cc puts out symbols like | |
1749 | /foo/baz/maclib::/usr/local/bin/maclib, | |
1750 | which would get here with a symbol type of ':'. */ | |
1751 | continue; | |
6a34fd2f | 1752 | |
9ce5d3bb DE |
1753 | default: |
1754 | /* Unexpected symbol descriptor. The second and subsequent stabs | |
1755 | of a continued stab can show up here. The question is | |
1756 | whether they ever can mimic a normal stab--it would be | |
1757 | nice if not, since we certainly don't want to spend the | |
1758 | time searching to the end of every string looking for | |
1759 | a backslash. */ | |
6a34fd2f | 1760 | |
b98664d3 | 1761 | complaint (_("unknown symbol descriptor `%c'"), |
9ce5d3bb DE |
1762 | p[1]); |
1763 | ||
1764 | /* Ignore it; perhaps it is an extension that we don't | |
1765 | know about. */ | |
1766 | continue; | |
1767 | } | |
131fe1bb | 1768 | } |
6a34fd2f | 1769 | |
9ce5d3bb | 1770 | case N_EXCL: |
6a34fd2f | 1771 | |
83b94be5 | 1772 | namestring = set_namestring (objfile, &nlist); |
6a34fd2f EZ |
1773 | |
1774 | /* Find the corresponding bincl and mark that psymtab on the | |
0963b4bd | 1775 | psymtab dependency list. */ |
6a34fd2f | 1776 | { |
891813be | 1777 | legacy_psymtab *needed_pst = |
6a34fd2f EZ |
1778 | find_corresponding_bincl_psymtab (namestring, nlist.n_value); |
1779 | ||
1780 | /* If this include file was defined earlier in this file, | |
1781 | leave it alone. */ | |
1782 | if (needed_pst == pst) | |
1783 | continue; | |
1784 | ||
1785 | if (needed_pst) | |
1786 | { | |
1787 | int i; | |
1788 | int found = 0; | |
1789 | ||
1790 | for (i = 0; i < dependencies_used; i++) | |
1791 | if (dependency_list[i] == needed_pst) | |
1792 | { | |
1793 | found = 1; | |
1794 | break; | |
1795 | } | |
1796 | ||
1797 | /* If it's already in the list, skip the rest. */ | |
1798 | if (found) | |
1799 | continue; | |
1800 | ||
1801 | dependency_list[dependencies_used++] = needed_pst; | |
1802 | if (dependencies_used >= dependencies_allocated) | |
1803 | { | |
891813be | 1804 | legacy_psymtab **orig = dependency_list; |
9a619af0 | 1805 | |
6a34fd2f | 1806 | dependency_list = |
891813be | 1807 | (legacy_psymtab **) |
6a34fd2f | 1808 | alloca ((dependencies_allocated *= 2) |
891813be | 1809 | * sizeof (legacy_psymtab *)); |
4efb68b1 | 1810 | memcpy (dependency_list, orig, |
6a34fd2f | 1811 | (dependencies_used |
891813be | 1812 | * sizeof (legacy_psymtab *))); |
6a34fd2f | 1813 | #ifdef DEBUG_INFO |
063e58ba | 1814 | fprintf_unfiltered (gdb_stderr, |
3e43a32a MS |
1815 | "Had to reallocate " |
1816 | "dependency list.\n"); | |
063e58ba MD |
1817 | fprintf_unfiltered (gdb_stderr, |
1818 | "New dependencies allocated: %d\n", | |
6a34fd2f EZ |
1819 | dependencies_allocated); |
1820 | #endif | |
1821 | } | |
1822 | } | |
1823 | } | |
1824 | continue; | |
1825 | ||
9ce5d3bb | 1826 | case N_ENDM: |
4ae976d1 TT |
1827 | /* Solaris 2 end of module, finish current partial symbol |
1828 | table. dbx_end_psymtab will set the high text address of | |
1829 | PST to the proper value, which is necessary if a module | |
1830 | compiled without debugging info follows this module. */ | |
5e2b427d | 1831 | if (pst && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9ce5d3bb | 1832 | { |
7e9c0476 | 1833 | dbx_end_psymtab (objfile, partial_symtabs, pst, |
8763cede DE |
1834 | psymtab_include_list, includes_used, |
1835 | symnum * symbol_size, | |
1836 | (CORE_ADDR) 0, dependency_list, | |
1837 | dependencies_used, textlow_not_set); | |
891813be | 1838 | pst = (legacy_psymtab *) 0; |
9ce5d3bb DE |
1839 | includes_used = 0; |
1840 | dependencies_used = 0; | |
578933ab | 1841 | has_line_numbers = 0; |
9ce5d3bb | 1842 | } |
6a34fd2f | 1843 | continue; |
c906108c | 1844 | |
9ce5d3bb | 1845 | case N_RBRAC: |
6a34fd2f EZ |
1846 | #ifdef HANDLE_RBRAC |
1847 | HANDLE_RBRAC (nlist.n_value); | |
1848 | continue; | |
1849 | #endif | |
9ce5d3bb DE |
1850 | case N_EINCL: |
1851 | case N_DSLINE: | |
1852 | case N_BSLINE: | |
1853 | case N_SSYM: /* Claim: Structure or union element. | |
063e58ba | 1854 | Hopefully, I can ignore this. */ |
0963b4bd | 1855 | case N_ENTRY: /* Alternate entry point; can ignore. */ |
9ce5d3bb DE |
1856 | case N_MAIN: /* Can definitely ignore this. */ |
1857 | case N_CATCH: /* These are GNU C++ extensions */ | |
0963b4bd | 1858 | case N_EHDECL: /* that can safely be ignored here. */ |
9ce5d3bb DE |
1859 | case N_LENG: |
1860 | case N_BCOMM: | |
1861 | case N_ECOMM: | |
1862 | case N_ECOML: | |
1863 | case N_FNAME: | |
1864 | case N_SLINE: | |
1865 | case N_RSYM: | |
1866 | case N_PSYM: | |
ec48dc8b PM |
1867 | case N_BNSYM: |
1868 | case N_ENSYM: | |
9ce5d3bb DE |
1869 | case N_LBRAC: |
1870 | case N_NSYMS: /* Ultrix 4.0: symbol count */ | |
1871 | case N_DEFD: /* GNU Modula-2 */ | |
1872 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ | |
1873 | ||
0963b4bd | 1874 | case N_OBJ: /* Useless types from Solaris. */ |
9ce5d3bb DE |
1875 | case N_OPT: |
1876 | case N_PATCH: | |
0963b4bd | 1877 | /* These symbols aren't interesting; don't worry about them. */ |
6a34fd2f EZ |
1878 | continue; |
1879 | ||
9ce5d3bb | 1880 | default: |
6a34fd2f EZ |
1881 | /* If we haven't found it yet, ignore it. It's probably some |
1882 | new type we don't know about yet. */ | |
bb599908 | 1883 | unknown_symtype_complaint (hex_string (nlist.n_type)); |
6a34fd2f EZ |
1884 | continue; |
1885 | } | |
c906108c SS |
1886 | } |
1887 | ||
1888 | /* If there's stuff to be cleaned up, clean it up. */ | |
c906108c SS |
1889 | if (pst) |
1890 | { | |
4ae976d1 TT |
1891 | /* Don't set high text address of PST lower than it already |
1892 | is. */ | |
c906108c | 1893 | CORE_ADDR text_end = |
6a34fd2f | 1894 | (lowest_text_address == (CORE_ADDR) -1 |
79748972 | 1895 | ? text_addr |
6a34fd2f EZ |
1896 | : lowest_text_address) |
1897 | + text_size; | |
c906108c | 1898 | |
7e9c0476 TT |
1899 | dbx_end_psymtab (objfile, partial_symtabs, |
1900 | pst, psymtab_include_list, includes_used, | |
8763cede | 1901 | symnum * symbol_size, |
79748972 TT |
1902 | (text_end > pst->raw_text_high () |
1903 | ? text_end : pst->raw_text_high ()), | |
8763cede | 1904 | dependency_list, dependencies_used, textlow_not_set); |
c906108c | 1905 | } |
c906108c SS |
1906 | } |
1907 | ||
1908 | /* Allocate and partially fill a partial symtab. It will be | |
1909 | completely filled at the end of the symbol list. | |
1910 | ||
1911 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1912 | is the address relative to which its symbols are (incremental) or 0 | |
0963b4bd | 1913 | (normal). */ |
c906108c | 1914 | |
891813be | 1915 | static legacy_psymtab * |
7b249e47 TT |
1916 | start_psymtab (psymtab_storage *partial_symtabs, struct objfile *objfile, |
1917 | const char *filename, CORE_ADDR textlow, int ldsymoff) | |
c906108c | 1918 | { |
7b249e47 | 1919 | legacy_psymtab *result = new legacy_psymtab (filename, partial_symtabs, |
0072c873 | 1920 | objfile->per_bfd, textlow); |
c906108c | 1921 | |
8d749320 SM |
1922 | result->read_symtab_private = |
1923 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 1924 | LDSYMOFF (result) = ldsymoff; |
891813be | 1925 | result->legacy_read_symtab = dbx_read_symtab; |
69b037c3 | 1926 | result->legacy_expand_psymtab = dbx_expand_psymtab; |
c5aa993b JM |
1927 | SYMBOL_SIZE (result) = symbol_size; |
1928 | SYMBOL_OFFSET (result) = symbol_table_offset; | |
1929 | STRING_OFFSET (result) = string_table_offset; | |
1930 | FILE_STRING_OFFSET (result) = file_string_table_offset; | |
c906108c | 1931 | |
0963b4bd | 1932 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c | 1933 | psymtab_language = deduce_language_from_filename (filename); |
5ffa0793 | 1934 | PST_LANGUAGE (result) = psymtab_language; |
c906108c SS |
1935 | |
1936 | return result; | |
1937 | } | |
1938 | ||
0963b4bd | 1939 | /* Close off the current usage of PST. |
c906108c SS |
1940 | Returns PST or NULL if the partial symtab was empty and thrown away. |
1941 | ||
1942 | FIXME: List variables and peculiarities of same. */ | |
1943 | ||
891813be | 1944 | legacy_psymtab * |
7e9c0476 TT |
1945 | dbx_end_psymtab (struct objfile *objfile, psymtab_storage *partial_symtabs, |
1946 | legacy_psymtab *pst, | |
8763cede DE |
1947 | const char **include_list, int num_includes, |
1948 | int capping_symbol_offset, CORE_ADDR capping_text, | |
891813be | 1949 | legacy_psymtab **dependency_list, |
8763cede DE |
1950 | int number_dependencies, |
1951 | int textlow_not_set) | |
c906108c SS |
1952 | { |
1953 | int i; | |
08feed99 | 1954 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
1955 | |
1956 | if (capping_symbol_offset != -1) | |
c5aa993b | 1957 | LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst); |
4ae976d1 | 1958 | pst->set_text_high (capping_text); |
c906108c | 1959 | |
c906108c SS |
1960 | /* Under Solaris, the N_SO symbols always have a value of 0, |
1961 | instead of the usual address of the .o file. Therefore, | |
1962 | we have to do some tricks to fill in texthigh and textlow. | |
6a34fd2f | 1963 | The first trick is: if we see a static |
c906108c SS |
1964 | or global function, and the textlow for the current pst |
1965 | is not set (ie: textlow_not_set), then we use that function's | |
1966 | address for the textlow of the pst. */ | |
1967 | ||
1968 | /* Now, to fill in texthigh, we remember the last function seen | |
6a34fd2f | 1969 | in the .o file. Also, there's a hack in |
c906108c SS |
1970 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field |
1971 | to here via the misc_info field. Therefore, we can fill in | |
1972 | a reliable texthigh by taking the address plus size of the | |
1973 | last function in the file. */ | |
1974 | ||
52948f01 | 1975 | if (!pst->text_high_valid && last_function_name |
5e2b427d | 1976 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
c906108c | 1977 | { |
c906108c | 1978 | int n; |
3b7344d5 | 1979 | struct bound_minimal_symbol minsym; |
c906108c | 1980 | |
a121b7c1 PA |
1981 | const char *colon = strchr (last_function_name, ':'); |
1982 | if (colon == NULL) | |
1983 | n = 0; | |
1984 | else | |
1985 | n = colon - last_function_name; | |
1986 | char *p = (char *) alloca (n + 2); | |
c906108c SS |
1987 | strncpy (p, last_function_name, n); |
1988 | p[n] = 0; | |
c5aa993b | 1989 | |
c906108c | 1990 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
3b7344d5 | 1991 | if (minsym.minsym == NULL) |
c906108c SS |
1992 | { |
1993 | /* Sun Fortran appends an underscore to the minimal symbol name, | |
1994 | try again with an appended underscore if the minimal symbol | |
1995 | was not found. */ | |
1996 | p[n] = '_'; | |
1997 | p[n + 1] = 0; | |
1998 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); | |
1999 | } | |
2000 | ||
3b7344d5 | 2001 | if (minsym.minsym) |
79748972 | 2002 | pst->set_text_high (MSYMBOL_VALUE_RAW_ADDRESS (minsym.minsym) |
4ae976d1 | 2003 | + MSYMBOL_SIZE (minsym.minsym)); |
c906108c SS |
2004 | |
2005 | last_function_name = NULL; | |
2006 | } | |
2007 | ||
5e2b427d | 2008 | if (!gdbarch_sofun_address_maybe_missing (gdbarch)) |
203c3895 | 2009 | ; |
0963b4bd | 2010 | /* This test will be true if the last .o file is only data. */ |
203c3895 | 2011 | else if (textlow_not_set) |
79748972 | 2012 | pst->set_text_low (pst->raw_text_high ()); |
c906108c SS |
2013 | else |
2014 | { | |
c906108c | 2015 | /* If we know our own starting text address, then walk through all other |
dda83cd7 SM |
2016 | psymtabs for this objfile, and if any didn't know their ending text |
2017 | address, set it to our starting address. Take care to not set our | |
2018 | own ending address to our starting address. */ | |
c906108c | 2019 | |
7e9c0476 | 2020 | for (partial_symtab *p1 : partial_symtabs->range ()) |
52948f01 | 2021 | if (!p1->text_high_valid && p1->text_low_valid && p1 != pst) |
79748972 | 2022 | p1->set_text_high (pst->raw_text_low ()); |
c906108c SS |
2023 | } |
2024 | ||
2025 | /* End of kludge for patching Solaris textlow and texthigh. */ | |
c906108c | 2026 | |
ae7754b2 | 2027 | pst->end (); |
c906108c SS |
2028 | |
2029 | pst->number_of_dependencies = number_dependencies; | |
2030 | if (number_dependencies) | |
2031 | { | |
a9342b62 | 2032 | pst->dependencies |
7e9c0476 | 2033 | = partial_symtabs->allocate_dependencies (number_dependencies); |
c906108c | 2034 | memcpy (pst->dependencies, dependency_list, |
891813be | 2035 | number_dependencies * sizeof (legacy_psymtab *)); |
c906108c SS |
2036 | } |
2037 | else | |
2038 | pst->dependencies = 0; | |
2039 | ||
2040 | for (i = 0; i < num_includes; i++) | |
2041 | { | |
891813be | 2042 | legacy_psymtab *subpst = |
0072c873 | 2043 | new legacy_psymtab (include_list[i], partial_symtabs, objfile->per_bfd); |
c906108c | 2044 | |
c906108c | 2045 | subpst->read_symtab_private = |
8d749320 | 2046 | XOBNEW (&objfile->objfile_obstack, struct symloc); |
c5aa993b | 2047 | LDSYMOFF (subpst) = |
4ae976d1 | 2048 | LDSYMLEN (subpst) = 0; |
c906108c SS |
2049 | |
2050 | /* We could save slight bits of space by only making one of these, | |
dda83cd7 | 2051 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 | 2052 | subpst->dependencies = |
7e9c0476 | 2053 | partial_symtabs->allocate_dependencies (1); |
c906108c SS |
2054 | subpst->dependencies[0] = pst; |
2055 | subpst->number_of_dependencies = 1; | |
2056 | ||
891813be | 2057 | subpst->legacy_read_symtab = pst->legacy_read_symtab; |
8566b89b | 2058 | subpst->legacy_expand_psymtab = pst->legacy_expand_psymtab; |
c906108c SS |
2059 | } |
2060 | ||
c906108c SS |
2061 | if (num_includes == 0 |
2062 | && number_dependencies == 0 | |
932539d7 | 2063 | && pst->empty () |
c906108c SS |
2064 | && has_line_numbers == 0) |
2065 | { | |
e0814aae | 2066 | /* Throw away this psymtab, it's empty. */ |
c906108c | 2067 | /* Empty psymtabs happen as a result of header files which don't have |
dda83cd7 SM |
2068 | any symbols in them. There can be a lot of them. But this check |
2069 | is wrong, in that a psymtab with N_SLINE entries but nothing else | |
2070 | is not empty, but we don't realize that. Fixing that without slowing | |
2071 | things down might be tricky. */ | |
c906108c | 2072 | |
7e9c0476 | 2073 | partial_symtabs->discard_psymtab (pst); |
c906108c SS |
2074 | |
2075 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2076 | pst = NULL; |
c906108c SS |
2077 | } |
2078 | return pst; | |
2079 | } | |
2080 | \f | |
2081 | static void | |
69b037c3 | 2082 | dbx_expand_psymtab (legacy_psymtab *pst, struct objfile *objfile) |
c906108c | 2083 | { |
0494dbec | 2084 | gdb_assert (!pst->readin); |
c906108c | 2085 | |
0963b4bd | 2086 | /* Read in all partial symtabs on which this one is dependent. */ |
48993951 | 2087 | pst->expand_dependencies (objfile); |
c906108c | 2088 | |
0963b4bd | 2089 | if (LDSYMLEN (pst)) /* Otherwise it's a dummy. */ |
c906108c SS |
2090 | { |
2091 | /* Init stuff necessary for reading in symbols */ | |
2092 | stabsread_init (); | |
33c7c59d | 2093 | scoped_free_pendings free_pending; |
c906108c SS |
2094 | file_string_table_offset = FILE_STRING_OFFSET (pst); |
2095 | symbol_size = SYMBOL_SIZE (pst); | |
2096 | ||
0963b4bd | 2097 | /* Read in this file's symbols. */ |
5c80ed9d TT |
2098 | bfd_seek (objfile->obfd, SYMBOL_OFFSET (pst), SEEK_SET); |
2099 | read_ofile_symtab (objfile, pst); | |
c906108c SS |
2100 | } |
2101 | ||
6d94535f | 2102 | pst->readin = true; |
c906108c SS |
2103 | } |
2104 | ||
2105 | /* Read in all of the symbols for a given psymtab for real. | |
257e7a09 | 2106 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
2107 | |
2108 | static void | |
891813be | 2109 | dbx_read_symtab (legacy_psymtab *self, struct objfile *objfile) |
c906108c | 2110 | { |
077cbab2 | 2111 | gdb_assert (!self->readin); |
c906108c | 2112 | |
257e7a09 | 2113 | if (LDSYMLEN (self) || self->number_of_dependencies) |
c906108c | 2114 | { |
c906108c SS |
2115 | next_symbol_text_func = dbx_next_symbol_text; |
2116 | ||
bf259e25 TT |
2117 | { |
2118 | scoped_restore restore_stabs_data = make_scoped_restore (&stabs_data); | |
2119 | gdb::unique_xmalloc_ptr<gdb_byte> data_holder; | |
2120 | if (DBX_STAB_SECTION (objfile)) | |
2121 | { | |
2122 | stabs_data | |
2123 | = symfile_relocate_debug_section (objfile, | |
2124 | DBX_STAB_SECTION (objfile), | |
2125 | NULL); | |
2126 | data_holder.reset (stabs_data); | |
2127 | } | |
c906108c | 2128 | |
8566b89b | 2129 | self->expand_psymtab (objfile); |
bf259e25 | 2130 | } |
086df311 | 2131 | |
c906108c | 2132 | /* Match with global symbols. This only needs to be done once, |
dda83cd7 | 2133 | after all of the symtabs and dependencies have been read in. */ |
5c80ed9d | 2134 | scan_file_globals (objfile); |
c906108c SS |
2135 | } |
2136 | } | |
2137 | ||
0963b4bd | 2138 | /* Read in a defined section of a specific object file's symbols. */ |
c5aa993b | 2139 | |
c906108c | 2140 | static void |
891813be | 2141 | read_ofile_symtab (struct objfile *objfile, legacy_psymtab *pst) |
c906108c | 2142 | { |
a121b7c1 | 2143 | const char *namestring; |
52f0bd74 | 2144 | struct external_nlist *bufp; |
c906108c SS |
2145 | struct internal_nlist nlist; |
2146 | unsigned char type; | |
2147 | unsigned max_symnum; | |
52f0bd74 | 2148 | bfd *abfd; |
c906108c SS |
2149 | int sym_offset; /* Offset to start of symbols to read */ |
2150 | int sym_size; /* Size of symbols to read */ | |
2151 | CORE_ADDR text_offset; /* Start of text segment for symbols */ | |
2152 | int text_size; /* Size of text segment for symbols */ | |
c906108c | 2153 | |
c5aa993b JM |
2154 | sym_offset = LDSYMOFF (pst); |
2155 | sym_size = LDSYMLEN (pst); | |
79748972 TT |
2156 | text_offset = pst->text_low (objfile); |
2157 | text_size = pst->text_high (objfile) - pst->text_low (objfile); | |
6a053cb1 | 2158 | const section_offsets §ion_offsets = objfile->section_offsets; |
c906108c | 2159 | |
dd707e8e | 2160 | dbxread_objfile = objfile; |
c906108c SS |
2161 | |
2162 | stringtab_global = DBX_STRINGTAB (objfile); | |
46212e0b | 2163 | set_last_source_file (NULL); |
c906108c SS |
2164 | |
2165 | abfd = objfile->obfd; | |
0963b4bd | 2166 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol. */ |
c906108c | 2167 | symbuf_end = symbuf_idx = 0; |
086df311 DJ |
2168 | symbuf_read = 0; |
2169 | symbuf_left = sym_offset + sym_size; | |
c906108c SS |
2170 | |
2171 | /* It is necessary to actually read one symbol *before* the start | |
2172 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL | |
2173 | occurs before the N_SO symbol. | |
2174 | ||
2175 | Detecting this in read_dbx_symtab | |
2176 | would slow down initial readin, so we look for it here instead. */ | |
c5aa993b | 2177 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
c906108c | 2178 | { |
086df311 | 2179 | stabs_seek (sym_offset - symbol_size); |
c906108c SS |
2180 | fill_symbuf (abfd); |
2181 | bufp = &symbuf[symbuf_idx++]; | |
2182 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2183 | OBJSTAT (objfile, n_stabs++); | |
2184 | ||
83b94be5 | 2185 | namestring = set_namestring (objfile, &nlist); |
c906108c SS |
2186 | |
2187 | processing_gcc_compilation = 0; | |
2188 | if (nlist.n_type == N_TEXT) | |
2189 | { | |
2190 | const char *tempstring = namestring; | |
2191 | ||
91f54576 | 2192 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2193 | processing_gcc_compilation = 1; |
91f54576 | 2194 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2195 | processing_gcc_compilation = 2; |
2196 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)) | |
2197 | ++tempstring; | |
61012eef | 2198 | if (startswith (tempstring, "__gnu_compiled")) |
c906108c SS |
2199 | processing_gcc_compilation = 2; |
2200 | } | |
c906108c SS |
2201 | } |
2202 | else | |
2203 | { | |
2204 | /* The N_SO starting this symtab is the first symbol, so we | |
dda83cd7 SM |
2205 | better not check the symbol before it. I'm not this can |
2206 | happen, but it doesn't hurt to check for it. */ | |
086df311 | 2207 | stabs_seek (sym_offset); |
c906108c SS |
2208 | processing_gcc_compilation = 0; |
2209 | } | |
2210 | ||
2211 | if (symbuf_idx == symbuf_end) | |
2212 | fill_symbuf (abfd); | |
2213 | bufp = &symbuf[symbuf_idx]; | |
2214 | if (bfd_h_get_8 (abfd, bufp->e_type) != N_SO) | |
8a3fe4f8 | 2215 | error (_("First symbol in segment of executable not a source symbol")); |
c906108c SS |
2216 | |
2217 | max_symnum = sym_size / symbol_size; | |
2218 | ||
2219 | for (symnum = 0; | |
2220 | symnum < max_symnum; | |
2221 | symnum++) | |
2222 | { | |
0963b4bd | 2223 | QUIT; /* Allow this to be interruptable. */ |
c906108c | 2224 | if (symbuf_idx == symbuf_end) |
c5aa993b | 2225 | fill_symbuf (abfd); |
c906108c SS |
2226 | bufp = &symbuf[symbuf_idx++]; |
2227 | INTERNALIZE_SYMBOL (nlist, bufp, abfd); | |
2228 | OBJSTAT (objfile, n_stabs++); | |
2229 | ||
2230 | type = bfd_h_get_8 (abfd, bufp->e_type); | |
2231 | ||
83b94be5 | 2232 | namestring = set_namestring (objfile, &nlist); |
c906108c | 2233 | |
c5aa993b JM |
2234 | if (type & N_STAB) |
2235 | { | |
7b1f21e5 PP |
2236 | if (sizeof (nlist.n_value) > 4 |
2237 | /* We are a 64-bit debugger debugging a 32-bit program. */ | |
2238 | && (type == N_LSYM || type == N_PSYM)) | |
2239 | /* We have to be careful with the n_value in the case of N_LSYM | |
2240 | and N_PSYM entries, because they are signed offsets from frame | |
2241 | pointer, but we actually read them as unsigned 32-bit values. | |
2242 | This is not a problem for 32-bit debuggers, for which negative | |
2243 | values end up being interpreted correctly (as negative | |
2244 | offsets) due to integer overflow. | |
2245 | But we need to sign-extend the value for 64-bit debuggers, | |
2246 | or we'll end up interpreting negative values as very large | |
2247 | positive offsets. */ | |
2248 | nlist.n_value = (nlist.n_value ^ 0x80000000) - 0x80000000; | |
c906108c | 2249 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
5ffa0793 PA |
2250 | namestring, section_offsets, objfile, |
2251 | PST_LANGUAGE (pst)); | |
c5aa993b | 2252 | } |
c906108c | 2253 | /* We skip checking for a new .o or -l file; that should never |
dda83cd7 | 2254 | happen in this routine. */ |
c906108c SS |
2255 | else if (type == N_TEXT) |
2256 | { | |
2257 | /* I don't think this code will ever be executed, because | |
2258 | the GCC_COMPILED_FLAG_SYMBOL usually is right before | |
2259 | the N_SO symbol which starts this source file. | |
2260 | However, there is no reason not to accept | |
2261 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ | |
2262 | ||
91f54576 | 2263 | if (strcmp (namestring, GCC_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2264 | processing_gcc_compilation = 1; |
91f54576 | 2265 | else if (strcmp (namestring, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c | 2266 | processing_gcc_compilation = 2; |
c906108c | 2267 | } |
c5aa993b | 2268 | else if (type & N_EXT || type == (unsigned char) N_TEXT |
9a619af0 | 2269 | || type == (unsigned char) N_NBTEXT) |
c5aa993b | 2270 | { |
85102364 | 2271 | /* Global symbol: see if we came across a dbx definition for |
c906108c SS |
2272 | a corresponding symbol. If so, store the value. Remove |
2273 | syms from the chain when their values are stored, but | |
2274 | search the whole chain, as there may be several syms from | |
0963b4bd | 2275 | different files with the same name. */ |
c906108c SS |
2276 | /* This is probably not true. Since the files will be read |
2277 | in one at a time, each reference to a global symbol will | |
0963b4bd MS |
2278 | be satisfied in each file as it appears. So we skip this |
2279 | section. */ | |
c906108c | 2280 | ; |
c5aa993b | 2281 | } |
c906108c SS |
2282 | } |
2283 | ||
4ae976d1 TT |
2284 | /* In a Solaris elf file, this variable, which comes from the value |
2285 | of the N_SO symbol, will still be 0. Luckily, text_offset, which | |
2286 | comes from low text address of PST, is correct. */ | |
2c99ee5c TT |
2287 | if (get_last_source_start_addr () == 0) |
2288 | set_last_source_start_addr (text_offset); | |
c906108c SS |
2289 | |
2290 | /* In reordered executables last_source_start_addr may not be the | |
2291 | lower bound for this symtab, instead use text_offset which comes | |
4ae976d1 | 2292 | from the low text address of PST, which is correct. */ |
2c99ee5c TT |
2293 | if (get_last_source_start_addr () > text_offset) |
2294 | set_last_source_start_addr (text_offset); | |
c906108c | 2295 | |
43f3e411 DE |
2296 | pst->compunit_symtab = end_symtab (text_offset + text_size, |
2297 | SECT_OFF_TEXT (objfile)); | |
c906108c | 2298 | |
c906108c | 2299 | end_stabs (); |
e9112110 | 2300 | |
dd707e8e | 2301 | dbxread_objfile = NULL; |
c906108c | 2302 | } |
c906108c | 2303 | \f |
c5aa993b | 2304 | |
195a3f6c TT |
2305 | /* Record the namespace that the function defined by SYMBOL was |
2306 | defined in, if necessary. BLOCK is the associated block; use | |
2307 | OBSTACK for allocation. */ | |
2308 | ||
2309 | static void | |
2310 | cp_set_block_scope (const struct symbol *symbol, | |
2311 | struct block *block, | |
2312 | struct obstack *obstack) | |
2313 | { | |
987012b8 | 2314 | if (symbol->demangled_name () != NULL) |
195a3f6c TT |
2315 | { |
2316 | /* Try to figure out the appropriate namespace from the | |
2317 | demangled name. */ | |
2318 | ||
2319 | /* FIXME: carlton/2003-04-15: If the function in question is | |
2320 | a method of a class, the name will actually include the | |
2321 | name of the class as well. This should be harmless, but | |
2322 | is a little unfortunate. */ | |
2323 | ||
987012b8 | 2324 | const char *name = symbol->demangled_name (); |
195a3f6c TT |
2325 | unsigned int prefix_len = cp_entire_prefix_len (name); |
2326 | ||
0cf9feb9 | 2327 | block_set_scope (block, obstack_strndup (obstack, name, prefix_len), |
195a3f6c TT |
2328 | obstack); |
2329 | } | |
2330 | } | |
2331 | ||
c906108c SS |
2332 | /* This handles a single symbol from the symbol-file, building symbols |
2333 | into a GDB symtab. It takes these arguments and an implicit argument. | |
2334 | ||
2335 | TYPE is the type field of the ".stab" symbol entry. | |
2336 | DESC is the desc field of the ".stab" entry. | |
2337 | VALU is the value field of the ".stab" entry. | |
2338 | NAME is the symbol name, in our address space. | |
e31272c3 MK |
2339 | SECTION_OFFSETS is a set of amounts by which the sections of this |
2340 | object file were relocated when it was loaded into memory. Note | |
2341 | that these section_offsets are not the objfile->section_offsets but | |
2342 | the pst->section_offsets. All symbols that refer to memory | |
2343 | locations need to be offset by these amounts. | |
2344 | OBJFILE is the object file from which we are reading symbols. It | |
5ffa0793 PA |
2345 | is used in end_symtab. |
2346 | LANGUAGE is the language of the symtab. | |
2347 | */ | |
c906108c SS |
2348 | |
2349 | void | |
a121b7c1 | 2350 | process_one_symbol (int type, int desc, CORE_ADDR valu, const char *name, |
6a053cb1 | 2351 | const section_offsets §ion_offsets, |
5ffa0793 | 2352 | struct objfile *objfile, enum language language) |
c906108c | 2353 | { |
08feed99 | 2354 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 2355 | struct context_stack *newobj; |
a60f3166 | 2356 | struct context_stack cstk; |
e31272c3 MK |
2357 | /* This remembers the address of the start of a function. It is |
2358 | used because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries | |
2359 | are relative to the current function's start address. On systems | |
2360 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, | |
2361 | and is used to relocate these symbol types rather than | |
2362 | SECTION_OFFSETS. */ | |
c906108c SS |
2363 | static CORE_ADDR function_start_offset; |
2364 | ||
e31272c3 MK |
2365 | /* This holds the address of the start of a function, without the |
2366 | system peculiarities of function_start_offset. */ | |
a1b9830c DJ |
2367 | static CORE_ADDR last_function_start; |
2368 | ||
54c7009d EZ |
2369 | /* If this is nonzero, we've seen an N_SLINE since the start of the |
2370 | current function. We use this to tell us to move the first sline | |
2371 | to the beginning of the function regardless of what its given | |
0963b4bd | 2372 | value is. */ |
a1b9830c DJ |
2373 | static int sline_found_in_function = 1; |
2374 | ||
e31272c3 MK |
2375 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this |
2376 | source file. Used to detect the SunPRO solaris compiler. */ | |
c906108c SS |
2377 | static int n_opt_found; |
2378 | ||
e31272c3 MK |
2379 | /* Something is wrong if we see real data before seeing a source |
2380 | file name. */ | |
c906108c | 2381 | |
46212e0b | 2382 | if (get_last_source_file () == NULL && type != (unsigned char) N_SO) |
c906108c SS |
2383 | { |
2384 | /* Ignore any symbols which appear before an N_SO symbol. | |
dda83cd7 SM |
2385 | Currently no one puts symbols there, but we should deal |
2386 | gracefully with the case. A complain()t might be in order, | |
2387 | but this should not be an error (). */ | |
c906108c SS |
2388 | return; |
2389 | } | |
2390 | ||
2391 | switch (type) | |
2392 | { | |
2393 | case N_FUN: | |
2394 | case N_FNAME: | |
2395 | ||
2396 | if (*name == '\000') | |
2397 | { | |
e31272c3 MK |
2398 | /* This N_FUN marks the end of a function. This closes off |
2399 | the current block. */ | |
df8a16a1 | 2400 | struct block *block; |
0c5e171a | 2401 | |
edb0470b | 2402 | if (outermost_context_p ()) |
0c5e171a | 2403 | { |
23136709 | 2404 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2405 | break; |
2406 | } | |
2407 | ||
6b37567a JJ |
2408 | /* The following check is added before recording line 0 at |
2409 | end of function so as to handle hand-generated stabs | |
e31272c3 MK |
2410 | which may have an N_FUN stabs at the end of the function, |
2411 | but no N_SLINE stabs. */ | |
6b37567a | 2412 | if (sline_found_in_function) |
fbf65064 UW |
2413 | { |
2414 | CORE_ADDR addr = last_function_start + valu; | |
9a619af0 | 2415 | |
3c65e5b3 | 2416 | record_line (get_current_subfile (), 0, |
fbf65064 UW |
2417 | gdbarch_addr_bits_remove (gdbarch, addr)); |
2418 | } | |
6b37567a | 2419 | |
c906108c | 2420 | within_function = 0; |
a60f3166 | 2421 | cstk = pop_context (); |
c906108c SS |
2422 | |
2423 | /* Make a block for the local symbols within. */ | |
c233e9c6 | 2424 | block = finish_block (cstk.name, |
a60f3166 TT |
2425 | cstk.old_blocks, NULL, |
2426 | cstk.start_addr, cstk.start_addr + valu); | |
df8a16a1 DJ |
2427 | |
2428 | /* For C++, set the block's scope. */ | |
c1b5c1eb | 2429 | if (cstk.name->language () == language_cplus) |
a60f3166 | 2430 | cp_set_block_scope (cstk.name, block, &objfile->objfile_obstack); |
c906108c SS |
2431 | |
2432 | /* May be switching to an assembler file which may not be using | |
2433 | block relative stabs, so reset the offset. */ | |
1736a7bd | 2434 | function_start_offset = 0; |
c906108c SS |
2435 | |
2436 | break; | |
2437 | } | |
2438 | ||
a1b9830c DJ |
2439 | sline_found_in_function = 0; |
2440 | ||
e31272c3 | 2441 | /* Relocate for dynamic loading. */ |
6a053cb1 | 2442 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
85ddcc70 | 2443 | valu = gdbarch_addr_bits_remove (gdbarch, valu); |
a1b9830c DJ |
2444 | last_function_start = valu; |
2445 | ||
c906108c SS |
2446 | goto define_a_symbol; |
2447 | ||
2448 | case N_LBRAC: | |
2449 | /* This "symbol" just indicates the start of an inner lexical | |
dda83cd7 | 2450 | context within a function. */ |
c906108c SS |
2451 | |
2452 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2453 | if (n_opt_found && desc == 1) | |
2454 | break; | |
2455 | ||
1736a7bd | 2456 | valu += function_start_offset; |
c906108c | 2457 | |
ab8b8aca | 2458 | push_context (desc, valu); |
c906108c SS |
2459 | break; |
2460 | ||
2461 | case N_RBRAC: | |
2462 | /* This "symbol" just indicates the end of an inner lexical | |
dda83cd7 | 2463 | context that was started with N_LBRAC. */ |
c906108c SS |
2464 | |
2465 | /* Ignore extra outermost context from SunPRO cc and acc. */ | |
2466 | if (n_opt_found && desc == 1) | |
2467 | break; | |
2468 | ||
1736a7bd | 2469 | valu += function_start_offset; |
c906108c | 2470 | |
edb0470b | 2471 | if (outermost_context_p ()) |
0c5e171a | 2472 | { |
23136709 | 2473 | lbrac_mismatch_complaint (symnum); |
0c5e171a KD |
2474 | break; |
2475 | } | |
2476 | ||
a60f3166 TT |
2477 | cstk = pop_context (); |
2478 | if (desc != cstk.depth) | |
23136709 | 2479 | lbrac_mismatch_complaint (symnum); |
c906108c | 2480 | |
e148f09d | 2481 | if (*get_local_symbols () != NULL) |
1f077a3e | 2482 | { |
35156bae DJ |
2483 | /* GCC development snapshots from March to December of |
2484 | 2000 would output N_LSYM entries after N_LBRAC | |
2485 | entries. As a consequence, these symbols are simply | |
2486 | discarded. Complain if this is the case. */ | |
b98664d3 | 2487 | complaint (_("misplaced N_LBRAC entry; discarding local " |
3e43a32a | 2488 | "symbols which have no enclosing block")); |
1f077a3e | 2489 | } |
e148f09d | 2490 | *get_local_symbols () = cstk.locals; |
c906108c | 2491 | |
a60f3166 | 2492 | if (get_context_stack_depth () > 1) |
c906108c | 2493 | { |
e31272c3 MK |
2494 | /* This is not the outermost LBRAC...RBRAC pair in the |
2495 | function, its local symbols preceded it, and are the ones | |
2496 | just recovered from the context stack. Define the block | |
2497 | for them (but don't bother if the block contains no | |
2498 | symbols. Should we complain on blocks without symbols? | |
2499 | I can't think of any useful purpose for them). */ | |
e148f09d | 2500 | if (*get_local_symbols () != NULL) |
c906108c | 2501 | { |
e31272c3 MK |
2502 | /* Muzzle a compiler bug that makes end < start. |
2503 | ||
2504 | ??? Which compilers? Is this ever harmful?. */ | |
a60f3166 | 2505 | if (cstk.start_addr > valu) |
c906108c | 2506 | { |
b98664d3 | 2507 | complaint (_("block start larger than block end")); |
a60f3166 | 2508 | cstk.start_addr = valu; |
c906108c SS |
2509 | } |
2510 | /* Make a block for the local symbols within. */ | |
c233e9c6 | 2511 | finish_block (0, cstk.old_blocks, NULL, |
a60f3166 | 2512 | cstk.start_addr, valu); |
c906108c SS |
2513 | } |
2514 | } | |
2515 | else | |
2516 | { | |
2517 | /* This is the outermost LBRAC...RBRAC pair. There is no | |
2518 | need to do anything; leave the symbols that preceded it | |
2519 | to be attached to the function's own block. We need to | |
2520 | indicate that we just moved outside of the function. */ | |
2521 | within_function = 0; | |
2522 | } | |
2523 | ||
c906108c SS |
2524 | break; |
2525 | ||
2526 | case N_FN: | |
2527 | case N_FN_SEQ: | |
e31272c3 | 2528 | /* This kind of symbol indicates the start of an object file. |
dda83cd7 | 2529 | Relocate for dynamic loading. */ |
6a053cb1 | 2530 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
c906108c SS |
2531 | break; |
2532 | ||
2533 | case N_SO: | |
e31272c3 | 2534 | /* This type of symbol indicates the start of data for one |
dda83cd7 SM |
2535 | source file. Finish the symbol table of the previous source |
2536 | file (if any) and start accumulating a new symbol table. | |
2537 | Relocate for dynamic loading. */ | |
6a053cb1 | 2538 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
c906108c SS |
2539 | |
2540 | n_opt_found = 0; | |
2541 | ||
46212e0b | 2542 | if (get_last_source_file ()) |
c906108c SS |
2543 | { |
2544 | /* Check if previous symbol was also an N_SO (with some | |
e31272c3 MK |
2545 | sanity checks). If so, that one was actually the |
2546 | directory name, and the current one is the real file | |
0963b4bd | 2547 | name. Patch things up. */ |
c906108c SS |
2548 | if (previous_stab_code == (unsigned char) N_SO) |
2549 | { | |
3c65e5b3 | 2550 | patch_subfile_names (get_current_subfile (), name); |
0963b4bd | 2551 | break; /* Ignore repeated SOs. */ |
c906108c | 2552 | } |
4d663531 | 2553 | end_symtab (valu, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2554 | end_stabs (); |
2555 | } | |
2556 | ||
e31272c3 | 2557 | /* Null name means this just marks the end of text for this .o |
dda83cd7 | 2558 | file. Don't start a new symtab in this case. */ |
c906108c SS |
2559 | if (*name == '\000') |
2560 | break; | |
2561 | ||
1736a7bd | 2562 | function_start_offset = 0; |
c906108c SS |
2563 | |
2564 | start_stabs (); | |
5ffa0793 | 2565 | start_symtab (objfile, name, NULL, valu, language); |
c906108c SS |
2566 | record_debugformat ("stabs"); |
2567 | break; | |
2568 | ||
2569 | case N_SOL: | |
e31272c3 | 2570 | /* This type of symbol indicates the start of data for a |
dda83cd7 SM |
2571 | sub-source-file, one whose contents were copied or included |
2572 | in the compilation of the main source file (whose name was | |
2573 | given in the N_SO symbol). Relocate for dynamic loading. */ | |
6a053cb1 | 2574 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
4d663531 | 2575 | start_subfile (name); |
c906108c SS |
2576 | break; |
2577 | ||
2578 | case N_BINCL: | |
2579 | push_subfile (); | |
2580 | add_new_header_file (name, valu); | |
4d663531 | 2581 | start_subfile (name); |
c906108c SS |
2582 | break; |
2583 | ||
2584 | case N_EINCL: | |
4d663531 | 2585 | start_subfile (pop_subfile ()); |
c906108c SS |
2586 | break; |
2587 | ||
2588 | case N_EXCL: | |
2589 | add_old_header_file (name, valu); | |
2590 | break; | |
2591 | ||
2592 | case N_SLINE: | |
e31272c3 | 2593 | /* This type of "symbol" really just records one line-number -- |
dda83cd7 SM |
2594 | core-address correspondence. Enter it in the line list for |
2595 | this symbol table. */ | |
c906108c | 2596 | |
e31272c3 | 2597 | /* Relocate for dynamic loading and for ELF acc |
dda83cd7 | 2598 | function-relative symbols. */ |
c906108c SS |
2599 | valu += function_start_offset; |
2600 | ||
85102364 | 2601 | /* GCC 2.95.3 emits the first N_SLINE stab somewhere in the |
ceddaf06 MK |
2602 | middle of the prologue instead of right at the start of the |
2603 | function. To deal with this we record the address for the | |
2604 | first N_SLINE stab to be the start of the function instead of | |
2605 | the listed location. We really shouldn't to this. When | |
2606 | compiling with optimization, this first N_SLINE stab might be | |
2607 | optimized away. Other (non-GCC) compilers don't emit this | |
2608 | stab at all. There is no real harm in having an extra | |
2609 | numbered line, although it can be a bit annoying for the | |
2610 | user. However, it totally screws up our testsuite. | |
2611 | ||
2612 | So for now, keep adjusting the address of the first N_SLINE | |
2613 | stab, but only for code compiled with GCC. */ | |
2614 | ||
a1b9830c DJ |
2615 | if (within_function && sline_found_in_function == 0) |
2616 | { | |
fbf65064 UW |
2617 | CORE_ADDR addr = processing_gcc_compilation == 2 ? |
2618 | last_function_start : valu; | |
9a619af0 | 2619 | |
3c65e5b3 | 2620 | record_line (get_current_subfile (), desc, |
fbf65064 | 2621 | gdbarch_addr_bits_remove (gdbarch, addr)); |
a1b9830c DJ |
2622 | sline_found_in_function = 1; |
2623 | } | |
2624 | else | |
3c65e5b3 | 2625 | record_line (get_current_subfile (), desc, |
fbf65064 | 2626 | gdbarch_addr_bits_remove (gdbarch, valu)); |
c906108c SS |
2627 | break; |
2628 | ||
2629 | case N_BCOMM: | |
2630 | common_block_start (name, objfile); | |
2631 | break; | |
2632 | ||
2633 | case N_ECOMM: | |
2634 | common_block_end (objfile); | |
2635 | break; | |
2636 | ||
e31272c3 | 2637 | /* The following symbol types need to have the appropriate |
dda83cd7 SM |
2638 | offset added to their value; then we process symbol |
2639 | definitions in the name. */ | |
c906108c | 2640 | |
e31272c3 MK |
2641 | case N_STSYM: /* Static symbol in data segment. */ |
2642 | case N_LCSYM: /* Static symbol in BSS segment. */ | |
2643 | case N_ROSYM: /* Static symbol in read-only data segment. */ | |
c5aa993b | 2644 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
dda83cd7 SM |
2645 | Solaris 2's stabs-in-elf makes *most* symbols relative but |
2646 | leaves a few absolute (at least for Solaris 2.1 and version | |
2647 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on | |
2648 | the fence. .stab "foo:S...",N_STSYM is absolute (ld | |
2649 | relocates it) .stab "foo:V...",N_STSYM is relative (section | |
2650 | base subtracted). This leaves us no choice but to search for | |
2651 | the 'S' or 'V'... (or pass the whole section_offsets stuff | |
2652 | down ONE MORE function call level, which we really don't want | |
2653 | to do). */ | |
c906108c | 2654 | { |
a121b7c1 | 2655 | const char *p; |
c906108c | 2656 | |
e31272c3 MK |
2657 | /* Normal object file and NLMs have non-zero text seg offsets, |
2658 | but don't need their static syms offset in this fashion. | |
2659 | XXX - This is really a crock that should be fixed in the | |
2660 | solib handling code so that I don't have to work around it | |
2661 | here. */ | |
c906108c SS |
2662 | |
2663 | if (!symfile_relocatable) | |
2664 | { | |
2665 | p = strchr (name, ':'); | |
2666 | if (p != 0 && p[1] == 'S') | |
2667 | { | |
18a94d75 DE |
2668 | /* The linker relocated it. We don't want to add a |
2669 | Sun-stabs Tfoo.foo-like offset, but we *do* | |
e31272c3 MK |
2670 | want to add whatever solib.c passed to |
2671 | symbol_file_add as addr (this is known to affect | |
18a94d75 DE |
2672 | SunOS 4, and I suspect ELF too). Since there is no |
2673 | Ttext.text symbol, we can get addr from the text offset. */ | |
6a053cb1 | 2674 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
c906108c SS |
2675 | goto define_a_symbol; |
2676 | } | |
2677 | } | |
e31272c3 | 2678 | /* Since it's not the kludge case, re-dispatch to the right |
dda83cd7 | 2679 | handler. */ |
c5aa993b JM |
2680 | switch (type) |
2681 | { | |
2682 | case N_STSYM: | |
2683 | goto case_N_STSYM; | |
2684 | case N_LCSYM: | |
2685 | goto case_N_LCSYM; | |
2686 | case N_ROSYM: | |
2687 | goto case_N_ROSYM; | |
2688 | default: | |
e31272c3 | 2689 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2690 | _("failed internal consistency check")); |
c5aa993b | 2691 | } |
c906108c SS |
2692 | } |
2693 | ||
e31272c3 MK |
2694 | case_N_STSYM: /* Static symbol in data segment. */ |
2695 | case N_DSLINE: /* Source line number, data segment. */ | |
6a053cb1 | 2696 | valu += section_offsets[SECT_OFF_DATA (objfile)]; |
c906108c SS |
2697 | goto define_a_symbol; |
2698 | ||
e31272c3 MK |
2699 | case_N_LCSYM: /* Static symbol in BSS segment. */ |
2700 | case N_BSLINE: /* Source line number, BSS segment. */ | |
2701 | /* N_BROWS: overlaps with N_BSLINE. */ | |
6a053cb1 | 2702 | valu += section_offsets[SECT_OFF_BSS (objfile)]; |
c906108c SS |
2703 | goto define_a_symbol; |
2704 | ||
e31272c3 | 2705 | case_N_ROSYM: /* Static symbol in read-only data segment. */ |
6a053cb1 | 2706 | valu += section_offsets[SECT_OFF_RODATA (objfile)]; |
c906108c SS |
2707 | goto define_a_symbol; |
2708 | ||
e31272c3 MK |
2709 | case N_ENTRY: /* Alternate entry point. */ |
2710 | /* Relocate for dynamic loading. */ | |
6a053cb1 | 2711 | valu += section_offsets[SECT_OFF_TEXT (objfile)]; |
c906108c SS |
2712 | goto define_a_symbol; |
2713 | ||
e31272c3 | 2714 | /* The following symbol types we don't know how to process. |
dda83cd7 SM |
2715 | Handle them in a "default" way, but complain to people who |
2716 | care. */ | |
c906108c | 2717 | default: |
e31272c3 MK |
2718 | case N_CATCH: /* Exception handler catcher. */ |
2719 | case N_EHDECL: /* Exception handler name. */ | |
2720 | case N_PC: /* Global symbol in Pascal. */ | |
2721 | case N_M2C: /* Modula-2 compilation unit. */ | |
2722 | /* N_MOD2: overlaps with N_EHDECL. */ | |
2723 | case N_SCOPE: /* Modula-2 scope information. */ | |
2724 | case N_ECOML: /* End common (local name). */ | |
2725 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ | |
c906108c SS |
2726 | case N_NBDATA: |
2727 | case N_NBBSS: | |
2728 | case N_NBSTS: | |
2729 | case N_NBLCS: | |
bb599908 | 2730 | unknown_symtype_complaint (hex_string (type)); |
c906108c SS |
2731 | /* FALLTHROUGH */ |
2732 | ||
c906108c | 2733 | define_a_symbol: |
86a73007 | 2734 | /* These symbol types don't need the address field relocated, |
dda83cd7 | 2735 | since it is either unused, or is absolute. */ |
e31272c3 MK |
2736 | case N_GSYM: /* Global variable. */ |
2737 | case N_NSYMS: /* Number of symbols (Ultrix). */ | |
2738 | case N_NOMAP: /* No map? (Ultrix). */ | |
2739 | case N_RSYM: /* Register variable. */ | |
2740 | case N_DEFD: /* Modula-2 GNU module dependency. */ | |
2741 | case N_SSYM: /* Struct or union element. */ | |
2742 | case N_LSYM: /* Local symbol in stack. */ | |
2743 | case N_PSYM: /* Parameter variable. */ | |
2744 | case N_LENG: /* Length of preceding symbol type. */ | |
c906108c SS |
2745 | if (name) |
2746 | { | |
2747 | int deftype; | |
a121b7c1 | 2748 | const char *colon_pos = strchr (name, ':'); |
9a619af0 | 2749 | |
c906108c SS |
2750 | if (colon_pos == NULL) |
2751 | deftype = '\0'; | |
2752 | else | |
2753 | deftype = colon_pos[1]; | |
2754 | ||
2755 | switch (deftype) | |
2756 | { | |
2757 | case 'f': | |
2758 | case 'F': | |
e31272c3 | 2759 | /* Deal with the SunPRO 3.0 compiler which omits the |
dda83cd7 | 2760 | address from N_FUN symbols. */ |
c906108c | 2761 | if (type == N_FUN |
6a053cb1 | 2762 | && valu == section_offsets[SECT_OFF_TEXT (objfile)] |
5e2b427d | 2763 | && gdbarch_sofun_address_maybe_missing (gdbarch)) |
9a058a09 | 2764 | { |
79748972 TT |
2765 | struct bound_minimal_symbol minsym |
2766 | = find_stab_function (name, get_last_source_file (), | |
2767 | objfile); | |
2768 | if (minsym.minsym != NULL) | |
2769 | valu = BMSYMBOL_VALUE_ADDRESS (minsym); | |
9a058a09 | 2770 | } |
c906108c | 2771 | |
1736a7bd PA |
2772 | /* These addresses are absolute. */ |
2773 | function_start_offset = valu; | |
c906108c SS |
2774 | |
2775 | within_function = 1; | |
c3f6f71d | 2776 | |
a60f3166 | 2777 | if (get_context_stack_depth () > 1) |
c3f6f71d | 2778 | { |
b98664d3 | 2779 | complaint (_("unmatched N_LBRAC before symtab pos %d"), |
063e58ba | 2780 | symnum); |
c3f6f71d JM |
2781 | break; |
2782 | } | |
2783 | ||
edb0470b | 2784 | if (!outermost_context_p ()) |
c906108c | 2785 | { |
df8a16a1 DJ |
2786 | struct block *block; |
2787 | ||
a60f3166 | 2788 | cstk = pop_context (); |
c906108c | 2789 | /* Make a block for the local symbols within. */ |
c233e9c6 | 2790 | block = finish_block (cstk.name, |
a60f3166 TT |
2791 | cstk.old_blocks, NULL, |
2792 | cstk.start_addr, valu); | |
df8a16a1 DJ |
2793 | |
2794 | /* For C++, set the block's scope. */ | |
c1b5c1eb | 2795 | if (cstk.name->language () == language_cplus) |
a60f3166 | 2796 | cp_set_block_scope (cstk.name, block, |
195a3f6c | 2797 | &objfile->objfile_obstack); |
c906108c | 2798 | } |
c906108c | 2799 | |
fe978cb0 PA |
2800 | newobj = push_context (0, valu); |
2801 | newobj->name = define_symbol (valu, name, desc, type, objfile); | |
c906108c SS |
2802 | break; |
2803 | ||
2804 | default: | |
2805 | define_symbol (valu, name, desc, type, objfile); | |
2806 | break; | |
2807 | } | |
2808 | } | |
2809 | break; | |
2810 | ||
c5aa993b | 2811 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
dda83cd7 SM |
2812 | for a bunch of other flags, too. Someday we may parse their |
2813 | flags; for now we ignore theirs and hope they'll ignore ours. */ | |
e31272c3 | 2814 | case N_OPT: /* Solaris 2: Compiler options. */ |
c906108c SS |
2815 | if (name) |
2816 | { | |
6314a349 | 2817 | if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL) == 0) |
c906108c SS |
2818 | { |
2819 | processing_gcc_compilation = 2; | |
c906108c SS |
2820 | } |
2821 | else | |
2822 | n_opt_found = 1; | |
2823 | } | |
2824 | break; | |
2825 | ||
51cc5b07 AC |
2826 | case N_MAIN: /* Name of main routine. */ |
2827 | /* FIXME: If one has a symbol file with N_MAIN and then replaces | |
2828 | it with a symbol file with "main" and without N_MAIN. I'm | |
2829 | not sure exactly what rule to follow but probably something | |
2830 | like: N_MAIN takes precedence over "main" no matter what | |
2831 | objfile it is in; If there is more than one N_MAIN, choose | |
2832 | the one in the symfile_objfile; If there is more than one | |
2833 | N_MAIN within a given objfile, complain() and choose | |
0963b4bd | 2834 | arbitrarily. (kingdon) */ |
51cc5b07 | 2835 | if (name != NULL) |
3d548a53 | 2836 | set_objfile_main_name (objfile, name, language_unknown); |
51cc5b07 AC |
2837 | break; |
2838 | ||
c5aa993b | 2839 | /* The following symbol types can be ignored. */ |
e31272c3 MK |
2840 | case N_OBJ: /* Solaris 2: Object file dir and name. */ |
2841 | case N_PATCH: /* Solaris 2: Patch Run Time Checker. */ | |
2842 | /* N_UNDF: Solaris 2: File separator mark. */ | |
2843 | /* N_UNDF: -- we will never encounter it, since we only process | |
dda83cd7 | 2844 | one file's symbols at once. */ |
e31272c3 | 2845 | case N_ENDM: /* Solaris 2: End of module. */ |
c906108c SS |
2846 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
2847 | break; | |
2848 | } | |
2849 | ||
2850 | /* '#' is a GNU C extension to allow one symbol to refer to another | |
2851 | related symbol. | |
2852 | ||
2853 | Generally this is used so that an alias can refer to its main | |
c5aa993b | 2854 | symbol. */ |
13f6513c | 2855 | gdb_assert (name); |
c906108c SS |
2856 | if (name[0] == '#') |
2857 | { | |
e31272c3 | 2858 | /* Initialize symbol reference names and determine if this is a |
dda83cd7 SM |
2859 | definition. If a symbol reference is being defined, go ahead |
2860 | and add it. Otherwise, just return. */ | |
c906108c | 2861 | |
a121b7c1 | 2862 | const char *s = name; |
c906108c SS |
2863 | int refnum; |
2864 | ||
2865 | /* If this stab defines a new reference ID that is not on the | |
dda83cd7 | 2866 | reference list, then put it on the reference list. |
c906108c | 2867 | |
dda83cd7 SM |
2868 | We go ahead and advance NAME past the reference, even though |
2869 | it is not strictly necessary at this time. */ | |
c906108c SS |
2870 | refnum = symbol_reference_defined (&s); |
2871 | if (refnum >= 0) | |
2872 | if (!ref_search (refnum)) | |
2873 | ref_add (refnum, 0, name, valu); | |
2874 | name = s; | |
2875 | } | |
2876 | ||
c906108c SS |
2877 | previous_stab_code = type; |
2878 | } | |
2879 | \f | |
2880 | /* FIXME: The only difference between this and elfstab_build_psymtabs | |
2881 | is the call to install_minimal_symbols for elf, and the support for | |
2882 | split sections. If the differences are really that small, the code | |
2883 | should be shared. */ | |
2884 | ||
2885 | /* Scan and build partial symbols for an coff symbol file. | |
2886 | The coff file has already been processed to get its minimal symbols. | |
2887 | ||
2888 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2889 | rolled into one. | |
2890 | ||
2891 | OBJFILE is the object file we are reading symbols from. | |
2892 | ADDR is the address relative to which the symbols are (e.g. | |
2893 | the base address of the text segment). | |
c906108c SS |
2894 | TEXTADDR is the address of the text section. |
2895 | TEXTSIZE is the size of the text section. | |
2896 | STABSECTS is the list of .stab sections in OBJFILE. | |
2897 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the | |
2898 | .stabstr section exists. | |
2899 | ||
2900 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 2901 | adjusted for coff details. */ |
c906108c SS |
2902 | |
2903 | void | |
c67a9c90 | 2904 | coffstab_build_psymtabs (struct objfile *objfile, |
fba45db2 | 2905 | CORE_ADDR textaddr, unsigned int textsize, |
e2a03548 | 2906 | const std::vector<asection *> &stabsects, |
fba45db2 | 2907 | file_ptr stabstroffset, unsigned int stabstrsize) |
c906108c SS |
2908 | { |
2909 | int val; | |
2910 | bfd *sym_bfd = objfile->obfd; | |
b16c44de | 2911 | const char *name = bfd_get_filename (sym_bfd); |
c906108c SS |
2912 | unsigned int stabsize; |
2913 | ||
caa429d8 | 2914 | /* Allocate struct to keep track of stab reading. */ |
22a20dca | 2915 | dbx_objfile_data_key.emplace (objfile); |
caa429d8 | 2916 | |
c906108c SS |
2917 | DBX_TEXT_ADDR (objfile) = textaddr; |
2918 | DBX_TEXT_SIZE (objfile) = textsize; | |
2919 | ||
2920 | #define COFF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 2921 | DBX_SYMBOL_SIZE (objfile) = COFF_STABS_SYMBOL_SIZE; |
c906108c | 2922 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
c5aa993b | 2923 | |
c906108c | 2924 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 2925 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 2926 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 2927 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 2928 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
2929 | |
2930 | /* Now read in the string table in one big gulp. */ | |
2931 | ||
2932 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
2933 | if (val < 0) | |
2934 | perror_with_name (name); | |
3a42e9d0 | 2935 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
2936 | if (val != stabstrsize) |
2937 | perror_with_name (name); | |
2938 | ||
2939 | stabsread_new_init (); | |
c906108c SS |
2940 | free_header_files (); |
2941 | init_header_files (); | |
2942 | ||
2943 | processing_acc_compilation = 1; | |
2944 | ||
2945 | /* In a coff file, we've already installed the minimal symbols that came | |
2946 | from the coff (non-stab) symbol table, so always act like an | |
0963b4bd | 2947 | incremental load here. */ |
e2a03548 TT |
2948 | scoped_restore save_symbuf_sections |
2949 | = make_scoped_restore (&symbuf_sections); | |
2950 | if (stabsects.size () == 1) | |
c906108c | 2951 | { |
fd361982 | 2952 | stabsize = bfd_section_size (stabsects[0]); |
c906108c | 2953 | DBX_SYMCOUNT (objfile) = stabsize / DBX_SYMBOL_SIZE (objfile); |
e2a03548 | 2954 | DBX_SYMTAB_OFFSET (objfile) = stabsects[0]->filepos; |
c906108c SS |
2955 | } |
2956 | else | |
2957 | { | |
c906108c | 2958 | DBX_SYMCOUNT (objfile) = 0; |
e2a03548 | 2959 | for (asection *section : stabsects) |
c906108c | 2960 | { |
fd361982 | 2961 | stabsize = bfd_section_size (section); |
c906108c SS |
2962 | DBX_SYMCOUNT (objfile) += stabsize / DBX_SYMBOL_SIZE (objfile); |
2963 | } | |
2964 | ||
e2a03548 | 2965 | DBX_SYMTAB_OFFSET (objfile) = stabsects[0]->filepos; |
c906108c | 2966 | |
e2a03548 TT |
2967 | sect_idx = 1; |
2968 | symbuf_sections = &stabsects; | |
fd361982 | 2969 | symbuf_left = bfd_section_size (stabsects[0]); |
c906108c SS |
2970 | symbuf_read = 0; |
2971 | } | |
2972 | ||
96baa820 | 2973 | dbx_symfile_read (objfile, 0); |
c906108c SS |
2974 | } |
2975 | \f | |
2976 | /* Scan and build partial symbols for an ELF symbol file. | |
fea25152 | 2977 | This ELF file has already been processed to get its minimal symbols. |
c906108c SS |
2978 | |
2979 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read | |
2980 | rolled into one. | |
2981 | ||
2982 | OBJFILE is the object file we are reading symbols from. | |
2983 | ADDR is the address relative to which the symbols are (e.g. | |
2984 | the base address of the text segment). | |
086df311 | 2985 | STABSECT is the BFD section information for the .stab section. |
c906108c SS |
2986 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
2987 | .stabstr section exists. | |
2988 | ||
2989 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, | |
0963b4bd | 2990 | adjusted for elf details. */ |
c906108c SS |
2991 | |
2992 | void | |
c67a9c90 | 2993 | elfstab_build_psymtabs (struct objfile *objfile, asection *stabsect, |
fba45db2 | 2994 | file_ptr stabstroffset, unsigned int stabstrsize) |
c906108c SS |
2995 | { |
2996 | int val; | |
2997 | bfd *sym_bfd = objfile->obfd; | |
b16c44de | 2998 | const char *name = bfd_get_filename (sym_bfd); |
c906108c | 2999 | |
caa429d8 TT |
3000 | stabsread_new_init (); |
3001 | ||
3002 | /* Allocate struct to keep track of stab reading. */ | |
22a20dca | 3003 | dbx_objfile_data_key.emplace (objfile); |
caa429d8 | 3004 | |
7a292a7a SS |
3005 | /* Find the first and last text address. dbx_symfile_read seems to |
3006 | want this. */ | |
3007 | find_text_range (sym_bfd, objfile); | |
c906108c SS |
3008 | |
3009 | #define ELF_STABS_SYMBOL_SIZE 12 /* XXX FIXME XXX */ | |
c5aa993b | 3010 | DBX_SYMBOL_SIZE (objfile) = ELF_STABS_SYMBOL_SIZE; |
086df311 | 3011 | DBX_SYMCOUNT (objfile) |
fd361982 | 3012 | = bfd_section_size (stabsect) / DBX_SYMBOL_SIZE (objfile); |
c906108c | 3013 | DBX_STRINGTAB_SIZE (objfile) = stabstrsize; |
086df311 DJ |
3014 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; |
3015 | DBX_STAB_SECTION (objfile) = stabsect; | |
c5aa993b | 3016 | |
c906108c | 3017 | if (stabstrsize > bfd_get_size (sym_bfd)) |
8a3fe4f8 | 3018 | error (_("ridiculous string table size: %d bytes"), stabstrsize); |
c906108c | 3019 | DBX_STRINGTAB (objfile) = (char *) |
8b92e4d5 | 3020 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1); |
c5aa993b | 3021 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1); |
c906108c SS |
3022 | |
3023 | /* Now read in the string table in one big gulp. */ | |
3024 | ||
3025 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET); | |
3026 | if (val < 0) | |
3027 | perror_with_name (name); | |
3a42e9d0 | 3028 | val = bfd_bread (DBX_STRINGTAB (objfile), stabstrsize, sym_bfd); |
c906108c SS |
3029 | if (val != stabstrsize) |
3030 | perror_with_name (name); | |
3031 | ||
3032 | stabsread_new_init (); | |
c906108c SS |
3033 | free_header_files (); |
3034 | init_header_files (); | |
c906108c SS |
3035 | |
3036 | processing_acc_compilation = 1; | |
3037 | ||
086df311 | 3038 | symbuf_read = 0; |
fd361982 | 3039 | symbuf_left = bfd_section_size (stabsect); |
bf259e25 TT |
3040 | |
3041 | scoped_restore restore_stabs_data = make_scoped_restore (&stabs_data); | |
3042 | gdb::unique_xmalloc_ptr<gdb_byte> data_holder; | |
3043 | ||
ac8035ab | 3044 | stabs_data = symfile_relocate_debug_section (objfile, stabsect, NULL); |
086df311 | 3045 | if (stabs_data) |
bf259e25 | 3046 | data_holder.reset (stabs_data); |
086df311 | 3047 | |
c906108c SS |
3048 | /* In an elf file, we've already installed the minimal symbols that came |
3049 | from the elf (non-stab) symbol table, so always act like an | |
7134143f DJ |
3050 | incremental load here. dbx_symfile_read should not generate any new |
3051 | minimal symbols, since we will have already read the ELF dynamic symbol | |
3052 | table and normal symbol entries won't be in the ".stab" section; but in | |
3053 | case it does, it will install them itself. */ | |
96baa820 | 3054 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3055 | } |
3056 | \f | |
3057 | /* Scan and build partial symbols for a file with special sections for stabs | |
3058 | and stabstrings. The file has already been processed to get its minimal | |
3059 | symbols, and any other symbols that might be necessary to resolve GSYMs. | |
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. the base address | |
c5aa993b | 3066 | of the text segment). |
c906108c SS |
3067 | STAB_NAME is the name of the section that contains the stabs. |
3068 | STABSTR_NAME is the name of the section that contains the stab strings. | |
3069 | ||
0963b4bd MS |
3070 | This routine is mostly copied from dbx_symfile_init and |
3071 | dbx_symfile_read. */ | |
c906108c SS |
3072 | |
3073 | void | |
c67a9c90 | 3074 | stabsect_build_psymtabs (struct objfile *objfile, char *stab_name, |
fba45db2 | 3075 | char *stabstr_name, char *text_name) |
c906108c SS |
3076 | { |
3077 | int val; | |
3078 | bfd *sym_bfd = objfile->obfd; | |
b16c44de | 3079 | const char *name = bfd_get_filename (sym_bfd); |
c906108c SS |
3080 | asection *stabsect; |
3081 | asection *stabstrsect; | |
3082 | asection *text_sect; | |
3083 | ||
3084 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); | |
3085 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); | |
3086 | ||
3087 | if (!stabsect) | |
3088 | return; | |
3089 | ||
3090 | if (!stabstrsect) | |
0963b4bd MS |
3091 | error (_("stabsect_build_psymtabs: Found stabs (%s), " |
3092 | "but not string section (%s)"), | |
c906108c SS |
3093 | stab_name, stabstr_name); |
3094 | ||
22a20dca | 3095 | dbx_objfile_data_key.emplace (objfile); |
c906108c SS |
3096 | |
3097 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); | |
3098 | if (!text_sect) | |
8a3fe4f8 | 3099 | error (_("Can't find %s section in symbol file"), text_name); |
fd361982 AM |
3100 | DBX_TEXT_ADDR (objfile) = bfd_section_vma (text_sect); |
3101 | DBX_TEXT_SIZE (objfile) = bfd_section_size (text_sect); | |
c906108c | 3102 | |
c5aa993b | 3103 | DBX_SYMBOL_SIZE (objfile) = sizeof (struct external_nlist); |
fd361982 | 3104 | DBX_SYMCOUNT (objfile) = bfd_section_size (stabsect) |
c906108c | 3105 | / DBX_SYMBOL_SIZE (objfile); |
fd361982 | 3106 | DBX_STRINGTAB_SIZE (objfile) = bfd_section_size (stabstrsect); |
3e43a32a MS |
3107 | DBX_SYMTAB_OFFSET (objfile) = stabsect->filepos; /* XXX - FIXME: POKING |
3108 | INSIDE BFD DATA | |
3109 | STRUCTURES */ | |
c5aa993b | 3110 | |
c906108c | 3111 | if (DBX_STRINGTAB_SIZE (objfile) > bfd_get_size (sym_bfd)) |
063e58ba MD |
3112 | error (_("ridiculous string table size: %d bytes"), |
3113 | DBX_STRINGTAB_SIZE (objfile)); | |
c906108c | 3114 | DBX_STRINGTAB (objfile) = (char *) |
3e43a32a MS |
3115 | obstack_alloc (&objfile->objfile_obstack, |
3116 | DBX_STRINGTAB_SIZE (objfile) + 1); | |
c906108c SS |
3117 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1); |
3118 | ||
3119 | /* Now read in the string table in one big gulp. */ | |
3120 | ||
c5aa993b JM |
3121 | val = bfd_get_section_contents (sym_bfd, /* bfd */ |
3122 | stabstrsect, /* bfd section */ | |
063e58ba | 3123 | DBX_STRINGTAB (objfile), /* input buffer */ |
3e43a32a MS |
3124 | 0, /* offset into section */ |
3125 | DBX_STRINGTAB_SIZE (objfile)); /* amount to | |
3126 | read */ | |
c906108c SS |
3127 | |
3128 | if (!val) | |
3129 | perror_with_name (name); | |
3130 | ||
3131 | stabsread_new_init (); | |
c906108c SS |
3132 | free_header_files (); |
3133 | init_header_files (); | |
c906108c | 3134 | |
0963b4bd | 3135 | /* Now, do an incremental load. */ |
c906108c SS |
3136 | |
3137 | processing_acc_compilation = 1; | |
96baa820 | 3138 | dbx_symfile_read (objfile, 0); |
c906108c SS |
3139 | } |
3140 | \f | |
00b5771c | 3141 | static const struct sym_fns aout_sym_fns = |
c906108c | 3142 | { |
0963b4bd MS |
3143 | dbx_new_init, /* init anything gbl to entire symtab */ |
3144 | dbx_symfile_init, /* read initial info, setup for sym_read() */ | |
3145 | dbx_symfile_read, /* read a symbol file into symtab */ | |
3146 | dbx_symfile_finish, /* finished with file, cleanup */ | |
3147 | default_symfile_offsets, /* parse user's offsets to internal form */ | |
3148 | default_symfile_segments, /* Get segment information from a file. */ | |
3149 | NULL, | |
3150 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3151 | NULL, /* sym_probe_fns */ |
c906108c SS |
3152 | }; |
3153 | ||
6c265988 | 3154 | void _initialize_dbxread (); |
c906108c | 3155 | void |
6c265988 | 3156 | _initialize_dbxread () |
c906108c | 3157 | { |
c256e171 | 3158 | add_symtab_fns (bfd_target_aout_flavour, &aout_sym_fns); |
c906108c | 3159 | } |