Commit | Line | Data |
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c906108c | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
8acc9f48 | 2 | Copyright (C) 1986-2013 Free Software Foundation, Inc. |
c906108c SS |
3 | Derived from coffread.c, dbxread.c, and a lot of hacking. |
4 | Contributed by IBM Corporation. | |
5 | ||
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | #include "defs.h" | |
22 | #include "bfd.h" | |
23 | ||
24 | #include <sys/types.h> | |
25 | #include <fcntl.h> | |
26 | #include <ctype.h> | |
27 | #include "gdb_string.h" | |
28 | ||
29 | #include <sys/param.h> | |
c0ccb908 | 30 | #ifdef HAVE_SYS_FILE_H |
c906108c SS |
31 | #include <sys/file.h> |
32 | #endif | |
33 | #include "gdb_stat.h" | |
34 | ||
35 | #include "coff/internal.h" | |
36 | #include "libcoff.h" /* FIXME, internal data from BFD */ | |
11ed25ac KB |
37 | #include "coff/xcoff.h" |
38 | #include "libxcoff.h" | |
c906108c | 39 | #include "coff/rs6000.h" |
63807e1d | 40 | #include "xcoffread.h" |
c906108c SS |
41 | |
42 | #include "symtab.h" | |
43 | #include "gdbtypes.h" | |
9ab9195f | 44 | /* FIXME: ezannoni/2004-02-13 Verify if the include below is really needed. */ |
c906108c SS |
45 | #include "symfile.h" |
46 | #include "objfiles.h" | |
47 | #include "buildsym.h" | |
48 | #include "stabsread.h" | |
49 | #include "expression.h" | |
c906108c | 50 | #include "complaints.h" |
ccefe4c4 | 51 | #include "psympriv.h" |
c906108c SS |
52 | |
53 | #include "gdb-stabs.h" | |
54 | ||
55 | /* For interface with stabsread.c. */ | |
56 | #include "aout/stab_gnu.h" | |
57 | ||
c906108c | 58 | \f |
b8b98ad1 TT |
59 | /* Key for XCOFF-associated data. */ |
60 | ||
61 | static const struct objfile_data *xcoff_objfile_data_key; | |
62 | ||
c906108c SS |
63 | /* We put a pointer to this structure in the read_symtab_private field |
64 | of the psymtab. */ | |
65 | ||
c5aa993b JM |
66 | struct symloc |
67 | { | |
c906108c | 68 | |
c5aa993b | 69 | /* First symbol number for this file. */ |
c906108c | 70 | |
c5aa993b | 71 | int first_symnum; |
c906108c | 72 | |
c5aa993b JM |
73 | /* Number of symbols in the section of the symbol table devoted to |
74 | this file's symbols (actually, the section bracketed may contain | |
75 | more than just this file's symbols). If numsyms is 0, the only | |
76 | reason for this thing's existence is the dependency list. Nothing | |
77 | else will happen when it is read in. */ | |
c906108c | 78 | |
c5aa993b | 79 | int numsyms; |
c906108c | 80 | |
3e43a32a MS |
81 | /* Position of the start of the line number information for this |
82 | psymtab. */ | |
c5aa993b JM |
83 | unsigned int lineno_off; |
84 | }; | |
c906108c | 85 | |
581e13c1 | 86 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
87 | |
88 | static enum language psymtab_language = language_unknown; | |
c906108c | 89 | \f |
c5aa993b | 90 | |
581e13c1 | 91 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 92 | |
c5aa993b JM |
93 | struct coff_symbol |
94 | { | |
95 | char *c_name; | |
581e13c1 MS |
96 | int c_symnum; /* Symbol number of this entry. */ |
97 | int c_naux; /* 0 if syment only, 1 if syment + auxent. */ | |
c5aa993b JM |
98 | long c_value; |
99 | unsigned char c_sclass; | |
100 | int c_secnum; | |
101 | unsigned int c_type; | |
102 | }; | |
c906108c | 103 | |
581e13c1 | 104 | /* Last function's saved coff symbol `cs'. */ |
c906108c SS |
105 | |
106 | static struct coff_symbol fcn_cs_saved; | |
107 | ||
108 | static bfd *symfile_bfd; | |
109 | ||
110 | /* Core address of start and end of text of current source file. | |
111 | This is calculated from the first function seen after a C_FILE | |
581e13c1 | 112 | symbol. */ |
c906108c SS |
113 | |
114 | ||
115 | static CORE_ADDR cur_src_end_addr; | |
116 | ||
117 | /* Core address of the end of the first object file. */ | |
118 | ||
119 | static CORE_ADDR first_object_file_end; | |
120 | ||
581e13c1 | 121 | /* Initial symbol-table-debug-string vector length. */ |
c906108c SS |
122 | |
123 | #define INITIAL_STABVECTOR_LENGTH 40 | |
124 | ||
125 | /* Nonzero if within a function (so symbols should be local, | |
126 | if nothing says specifically). */ | |
127 | ||
128 | int within_function; | |
129 | ||
130 | /* Size of a COFF symbol. I think it is always 18, so I'm not sure | |
131 | there is any reason not to just use a #define, but might as well | |
132 | ask BFD for the size and store it here, I guess. */ | |
133 | ||
c5aa993b | 134 | static unsigned local_symesz; |
c906108c | 135 | |
c5aa993b JM |
136 | struct coff_symfile_info |
137 | { | |
581e13c1 MS |
138 | file_ptr min_lineno_offset; /* Where in file lowest line#s are. */ |
139 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */ | |
c906108c | 140 | |
c5aa993b JM |
141 | /* Pointer to the string table. */ |
142 | char *strtbl; | |
c906108c | 143 | |
c5aa993b JM |
144 | /* Pointer to debug section. */ |
145 | char *debugsec; | |
c906108c | 146 | |
c5aa993b JM |
147 | /* Pointer to the a.out symbol table. */ |
148 | char *symtbl; | |
c906108c | 149 | |
c5aa993b JM |
150 | /* Number of symbols in symtbl. */ |
151 | int symtbl_num_syms; | |
c906108c | 152 | |
c5aa993b JM |
153 | /* Offset in data section to TOC anchor. */ |
154 | CORE_ADDR toc_offset; | |
155 | }; | |
c906108c | 156 | |
b8b98ad1 TT |
157 | /* Convenience macro to access the per-objfile XCOFF data. */ |
158 | ||
159 | #define XCOFF_DATA(objfile) \ | |
160 | ((struct coff_symfile_info *) objfile_data ((objfile), \ | |
161 | xcoff_objfile_data_key)) | |
162 | ||
316a8b21 TG |
163 | /* XCOFF names for dwarf sections. There is no compressed sections. */ |
164 | ||
165 | static const struct dwarf2_debug_sections dwarf2_xcoff_names = { | |
166 | { ".dwinfo", NULL }, | |
167 | { ".dwabrev", NULL }, | |
168 | { ".dwline", NULL }, | |
169 | { ".dwloc", NULL }, | |
170 | { NULL, NULL }, /* debug_macinfo */ | |
24d3216f | 171 | { NULL, NULL }, /* debug_macro */ |
316a8b21 TG |
172 | { ".dwstr", NULL }, |
173 | { ".dwrnges", NULL }, | |
174 | { NULL, NULL }, /* debug_types */ | |
3019eac3 | 175 | { NULL, NULL }, /* debug_addr */ |
316a8b21 TG |
176 | { ".dwframe", NULL }, |
177 | { NULL, NULL }, /* eh_frame */ | |
24d3216f TT |
178 | { NULL, NULL }, /* gdb_index */ |
179 | 23 | |
316a8b21 TG |
180 | }; |
181 | ||
23136709 KB |
182 | static void |
183 | bf_notfound_complaint (void) | |
184 | { | |
3e43a32a MS |
185 | complaint (&symfile_complaints, |
186 | _("line numbers off, `.bf' symbol not found")); | |
23136709 | 187 | } |
c906108c | 188 | |
23136709 KB |
189 | static void |
190 | ef_complaint (int arg1) | |
191 | { | |
192 | complaint (&symfile_complaints, | |
e2e0b3e5 | 193 | _("Mismatched .ef symbol ignored starting at symnum %d"), arg1); |
23136709 | 194 | } |
c906108c | 195 | |
23136709 KB |
196 | static void |
197 | eb_complaint (int arg1) | |
198 | { | |
199 | complaint (&symfile_complaints, | |
e2e0b3e5 | 200 | _("Mismatched .eb symbol ignored starting at symnum %d"), arg1); |
23136709 | 201 | } |
c906108c | 202 | |
a14ed312 | 203 | static void xcoff_initial_scan (struct objfile *, int); |
c906108c | 204 | |
a14ed312 | 205 | static void scan_xcoff_symtab (struct objfile *); |
c906108c | 206 | |
a14ed312 | 207 | static char *xcoff_next_symbol_text (struct objfile *); |
c906108c | 208 | |
a14ed312 | 209 | static void record_include_begin (struct coff_symbol *); |
c906108c SS |
210 | |
211 | static void | |
a14ed312 KB |
212 | enter_line_range (struct subfile *, unsigned, unsigned, |
213 | CORE_ADDR, CORE_ADDR, unsigned *); | |
c906108c | 214 | |
a14ed312 | 215 | static void init_stringtab (bfd *, file_ptr, struct objfile *); |
c906108c | 216 | |
a14ed312 | 217 | static void xcoff_symfile_init (struct objfile *); |
c906108c | 218 | |
a14ed312 | 219 | static void xcoff_new_init (struct objfile *); |
c906108c | 220 | |
a14ed312 | 221 | static void xcoff_symfile_finish (struct objfile *); |
c906108c | 222 | |
570b8f7c AC |
223 | static void xcoff_symfile_offsets (struct objfile *, |
224 | struct section_addr_info *addrs); | |
c906108c | 225 | |
a14ed312 | 226 | static char *coff_getfilename (union internal_auxent *, struct objfile *); |
c906108c | 227 | |
a14ed312 | 228 | static void read_symbol (struct internal_syment *, int); |
c906108c | 229 | |
a14ed312 | 230 | static int read_symbol_lineno (int); |
c906108c | 231 | |
470d5666 | 232 | static CORE_ADDR read_symbol_nvalue (int); |
c906108c | 233 | |
a14ed312 KB |
234 | static struct symbol *process_xcoff_symbol (struct coff_symbol *, |
235 | struct objfile *); | |
c906108c | 236 | |
5c80ed9d | 237 | static void read_xcoff_symtab (struct objfile *, struct partial_symtab *); |
c906108c SS |
238 | |
239 | #if 0 | |
a14ed312 | 240 | static void add_stab_to_list (char *, struct pending_stabs **); |
c906108c SS |
241 | #endif |
242 | ||
a14ed312 | 243 | static int compare_lte (const void *, const void *); |
c906108c | 244 | |
a14ed312 | 245 | static struct linetable *arrange_linetable (struct linetable *); |
c906108c | 246 | |
a14ed312 | 247 | static void record_include_end (struct coff_symbol *); |
c906108c | 248 | |
a14ed312 | 249 | static void process_linenos (CORE_ADDR, CORE_ADDR); |
c906108c | 250 | \f |
c5aa993b | 251 | |
c906108c SS |
252 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
253 | code. */ | |
a14ed312 KB |
254 | static int secnum_to_section (int, struct objfile *); |
255 | static asection *secnum_to_bfd_section (int, struct objfile *); | |
c906108c | 256 | |
c5aa993b JM |
257 | struct find_targ_sec_arg |
258 | { | |
259 | int targ_index; | |
260 | int *resultp; | |
261 | asection **bfd_sect; | |
b8fbeb18 | 262 | struct objfile *objfile; |
c5aa993b | 263 | }; |
c906108c | 264 | |
a14ed312 | 265 | static void find_targ_sec (bfd *, asection *, void *); |
c906108c | 266 | |
c5aa993b | 267 | static void |
4efb68b1 | 268 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 269 | { |
c5aa993b | 270 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
b8fbeb18 | 271 | struct objfile *objfile = args->objfile; |
a109c7c1 | 272 | |
c906108c SS |
273 | if (sect->target_index == args->targ_index) |
274 | { | |
275 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
276 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
b8fbeb18 | 277 | *args->resultp = SECT_OFF_TEXT (objfile); |
c906108c | 278 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) |
b8fbeb18 | 279 | *args->resultp = SECT_OFF_DATA (objfile); |
c906108c | 280 | else |
44af9391 | 281 | *args->resultp = sect->index; |
c906108c SS |
282 | *args->bfd_sect = sect; |
283 | } | |
284 | } | |
285 | ||
ec92004f JB |
286 | /* Search all BFD sections for the section whose target_index is |
287 | equal to N_SCNUM. Set *BFD_SECT to that section. The section's | |
288 | associated index in the objfile's section_offset table is also | |
289 | stored in *SECNUM. | |
290 | ||
291 | If no match is found, *BFD_SECT is set to NULL, and *SECNUM | |
292 | is set to the text section's number. */ | |
a109c7c1 | 293 | |
ec92004f JB |
294 | static void |
295 | xcoff_secnum_to_sections (int n_scnum, struct objfile *objfile, | |
296 | asection **bfd_sect, int *secnum) | |
297 | { | |
c906108c | 298 | struct find_targ_sec_arg args; |
ec92004f JB |
299 | |
300 | args.targ_index = n_scnum; | |
301 | args.resultp = secnum; | |
302 | args.bfd_sect = bfd_sect; | |
b8fbeb18 | 303 | args.objfile = objfile; |
ec92004f JB |
304 | |
305 | *bfd_sect = NULL; | |
306 | *secnum = SECT_OFF_TEXT (objfile); | |
307 | ||
c906108c | 308 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
c906108c SS |
309 | } |
310 | ||
ec92004f JB |
311 | /* Return the section number (SECT_OFF_*) that N_SCNUM points to. */ |
312 | ||
313 | static int | |
314 | secnum_to_section (int n_scnum, struct objfile *objfile) | |
315 | { | |
316 | int secnum; | |
317 | asection *ignored; | |
318 | ||
319 | xcoff_secnum_to_sections (n_scnum, objfile, &ignored, &secnum); | |
320 | return secnum; | |
321 | } | |
322 | ||
323 | /* Return the BFD section that N_SCNUM points to. */ | |
324 | ||
c906108c | 325 | static asection * |
ec92004f | 326 | secnum_to_bfd_section (int n_scnum, struct objfile *objfile) |
c906108c | 327 | { |
ec92004f JB |
328 | int ignored; |
329 | asection *bfd_sect; | |
a109c7c1 | 330 | |
ec92004f JB |
331 | xcoff_secnum_to_sections (n_scnum, objfile, &bfd_sect, &ignored); |
332 | return bfd_sect; | |
c906108c SS |
333 | } |
334 | \f | |
581e13c1 | 335 | /* add a given stab string into given stab vector. */ |
c906108c SS |
336 | |
337 | #if 0 | |
338 | ||
339 | static void | |
fba45db2 | 340 | add_stab_to_list (char *stabname, struct pending_stabs **stabvector) |
c906108c | 341 | { |
c5aa993b JM |
342 | if (*stabvector == NULL) |
343 | { | |
344 | *stabvector = (struct pending_stabs *) | |
345 | xmalloc (sizeof (struct pending_stabs) + | |
346 | INITIAL_STABVECTOR_LENGTH * sizeof (char *)); | |
347 | (*stabvector)->count = 0; | |
348 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
349 | } | |
350 | else if ((*stabvector)->count >= (*stabvector)->length) | |
351 | { | |
352 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
353 | *stabvector = (struct pending_stabs *) | |
354 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + | |
3e43a32a | 355 | (*stabvector)->length * sizeof (char *)); |
c5aa993b JM |
356 | } |
357 | (*stabvector)->stab[(*stabvector)->count++] = stabname; | |
c906108c SS |
358 | } |
359 | ||
360 | #endif | |
c5aa993b | 361 | \f/* *INDENT-OFF* */ |
c906108c SS |
362 | /* Linenos are processed on a file-by-file basis. |
363 | ||
364 | Two reasons: | |
365 | ||
c5aa993b | 366 | 1) xlc (IBM's native c compiler) postpones static function code |
581e13c1 | 367 | emission to the end of a compilation unit. This way it can |
c5aa993b | 368 | determine if those functions (statics) are needed or not, and |
581e13c1 | 369 | can do some garbage collection (I think). This makes line |
c5aa993b JM |
370 | numbers and corresponding addresses unordered, and we end up |
371 | with a line table like: | |
372 | ||
373 | ||
374 | lineno addr | |
375 | foo() 10 0x100 | |
376 | 20 0x200 | |
377 | 30 0x300 | |
378 | ||
379 | foo3() 70 0x400 | |
380 | 80 0x500 | |
381 | 90 0x600 | |
382 | ||
383 | static foo2() | |
384 | 40 0x700 | |
385 | 50 0x800 | |
386 | 60 0x900 | |
387 | ||
388 | and that breaks gdb's binary search on line numbers, if the | |
581e13c1 | 389 | above table is not sorted on line numbers. And that sort |
c5aa993b JM |
390 | should be on function based, since gcc can emit line numbers |
391 | like: | |
392 | ||
393 | 10 0x100 - for the init/test part of a for stmt. | |
394 | 20 0x200 | |
395 | 30 0x300 | |
396 | 10 0x400 - for the increment part of a for stmt. | |
397 | ||
581e13c1 | 398 | arrange_linetable() will do this sorting. |
c5aa993b JM |
399 | |
400 | 2) aix symbol table might look like: | |
401 | ||
402 | c_file // beginning of a new file | |
403 | .bi // beginning of include file | |
404 | .ei // end of include file | |
405 | .bi | |
406 | .ei | |
407 | ||
408 | basically, .bi/.ei pairs do not necessarily encapsulate | |
581e13c1 | 409 | their scope. They need to be recorded, and processed later |
c5aa993b JM |
410 | on when we come the end of the compilation unit. |
411 | Include table (inclTable) and process_linenos() handle | |
412 | that. */ | |
9846de1b | 413 | /* *INDENT-ON* */ |
c906108c | 414 | |
c5aa993b JM |
415 | |
416 | ||
581e13c1 | 417 | /* compare line table entry addresses. */ |
c906108c SS |
418 | |
419 | static int | |
fba45db2 | 420 | compare_lte (const void *lte1p, const void *lte2p) |
c906108c SS |
421 | { |
422 | struct linetable_entry *lte1 = (struct linetable_entry *) lte1p; | |
423 | struct linetable_entry *lte2 = (struct linetable_entry *) lte2p; | |
a109c7c1 | 424 | |
c906108c SS |
425 | return lte1->pc - lte2->pc; |
426 | } | |
427 | ||
581e13c1 MS |
428 | /* Given a line table with function entries are marked, arrange its |
429 | functions in ascending order and strip off function entry markers | |
430 | and return it in a newly created table. If the old one is good | |
431 | enough, return the old one. */ | |
c906108c SS |
432 | /* FIXME: I think all this stuff can be replaced by just passing |
433 | sort_linevec = 1 to end_symtab. */ | |
434 | ||
435 | static struct linetable * | |
b095261a | 436 | arrange_linetable (struct linetable *oldLineTb) |
c906108c | 437 | { |
c5aa993b JM |
438 | int ii, jj, newline, /* new line count */ |
439 | function_count; /* # of functions */ | |
c906108c | 440 | |
c5aa993b JM |
441 | struct linetable_entry *fentry; /* function entry vector */ |
442 | int fentry_size; /* # of function entries */ | |
443 | struct linetable *newLineTb; /* new line table */ | |
c906108c SS |
444 | |
445 | #define NUM_OF_FUNCTIONS 20 | |
446 | ||
447 | fentry_size = NUM_OF_FUNCTIONS; | |
c5aa993b | 448 | fentry = (struct linetable_entry *) |
c906108c SS |
449 | xmalloc (fentry_size * sizeof (struct linetable_entry)); |
450 | ||
c5aa993b JM |
451 | for (function_count = 0, ii = 0; ii < oldLineTb->nitems; ++ii) |
452 | { | |
c5aa993b | 453 | if (oldLineTb->item[ii].line == 0) |
581e13c1 | 454 | { /* Function entry found. */ |
c5aa993b | 455 | if (function_count >= fentry_size) |
581e13c1 | 456 | { /* Make sure you have room. */ |
c5aa993b JM |
457 | fentry_size *= 2; |
458 | fentry = (struct linetable_entry *) | |
3e43a32a MS |
459 | xrealloc (fentry, |
460 | fentry_size * sizeof (struct linetable_entry)); | |
c5aa993b JM |
461 | } |
462 | fentry[function_count].line = ii; | |
463 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
464 | ++function_count; | |
465 | } | |
c906108c | 466 | } |
c906108c | 467 | |
c5aa993b JM |
468 | if (function_count == 0) |
469 | { | |
b8c9b27d | 470 | xfree (fentry); |
c5aa993b JM |
471 | return oldLineTb; |
472 | } | |
c906108c | 473 | else if (function_count > 1) |
3e43a32a MS |
474 | qsort (fentry, function_count, |
475 | sizeof (struct linetable_entry), compare_lte); | |
c906108c | 476 | |
581e13c1 | 477 | /* Allocate a new line table. */ |
c906108c SS |
478 | newLineTb = (struct linetable *) |
479 | xmalloc | |
c5aa993b JM |
480 | (sizeof (struct linetable) + |
481 | (oldLineTb->nitems - function_count) * sizeof (struct linetable_entry)); | |
c906108c | 482 | |
581e13c1 MS |
483 | /* If line table does not start with a function beginning, copy up until |
484 | a function begin. */ | |
c906108c SS |
485 | |
486 | newline = 0; | |
487 | if (oldLineTb->item[0].line != 0) | |
c5aa993b JM |
488 | for (newline = 0; |
489 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
c906108c SS |
490 | newLineTb->item[newline] = oldLineTb->item[newline]; |
491 | ||
581e13c1 | 492 | /* Now copy function lines one by one. */ |
c906108c | 493 | |
c5aa993b JM |
494 | for (ii = 0; ii < function_count; ++ii) |
495 | { | |
496 | for (jj = fentry[ii].line + 1; | |
497 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
498 | ++jj, ++newline) | |
499 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
500 | } | |
b8c9b27d | 501 | xfree (fentry); |
c906108c | 502 | newLineTb->nitems = oldLineTb->nitems - function_count; |
c5aa993b JM |
503 | return newLineTb; |
504 | } | |
c906108c SS |
505 | |
506 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
581e13c1 | 507 | following `IncludeChain'. At the end of each symtab (end_symtab), |
c906108c | 508 | we will determine if we should create additional symtab's to |
581e13c1 | 509 | represent if (the include files. */ |
c906108c SS |
510 | |
511 | ||
c5aa993b JM |
512 | typedef struct _inclTable |
513 | { | |
514 | char *name; /* include filename */ | |
c906108c SS |
515 | |
516 | /* Offsets to the line table. end points to the last entry which is | |
517 | part of this include file. */ | |
c5aa993b JM |
518 | int begin, end; |
519 | ||
c906108c | 520 | struct subfile *subfile; |
581e13c1 | 521 | unsigned funStartLine; /* Start line # of its function. */ |
c5aa993b JM |
522 | } |
523 | InclTable; | |
c906108c SS |
524 | |
525 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
c5aa993b JM |
526 | static InclTable *inclTable; /* global include table */ |
527 | static int inclIndx; /* last entry to table */ | |
528 | static int inclLength; /* table length */ | |
529 | static int inclDepth; /* nested include depth */ | |
c906108c | 530 | |
a14ed312 | 531 | static void allocate_include_entry (void); |
c906108c SS |
532 | |
533 | static void | |
fba45db2 | 534 | record_include_begin (struct coff_symbol *cs) |
c906108c SS |
535 | { |
536 | if (inclDepth) | |
537 | { | |
538 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
c5aa993b | 539 | of course, but in corresponding .s files.). */ |
c906108c SS |
540 | |
541 | /* This can happen with old versions of GCC. | |
c5aa993b JM |
542 | GCC 2.3.3-930426 does not exhibit this on a test case which |
543 | a user said produced the message for him. */ | |
e2e0b3e5 | 544 | complaint (&symfile_complaints, _("Nested C_BINCL symbols")); |
c906108c SS |
545 | } |
546 | ++inclDepth; | |
547 | ||
548 | allocate_include_entry (); | |
549 | ||
c5aa993b JM |
550 | inclTable[inclIndx].name = cs->c_name; |
551 | inclTable[inclIndx].begin = cs->c_value; | |
c906108c SS |
552 | } |
553 | ||
554 | static void | |
fba45db2 | 555 | record_include_end (struct coff_symbol *cs) |
c906108c | 556 | { |
c5aa993b | 557 | InclTable *pTbl; |
c906108c SS |
558 | |
559 | if (inclDepth == 0) | |
560 | { | |
e2e0b3e5 | 561 | complaint (&symfile_complaints, _("Mismatched C_BINCL/C_EINCL pair")); |
c906108c SS |
562 | } |
563 | ||
564 | allocate_include_entry (); | |
565 | ||
c5aa993b | 566 | pTbl = &inclTable[inclIndx]; |
c906108c SS |
567 | pTbl->end = cs->c_value; |
568 | ||
569 | --inclDepth; | |
570 | ++inclIndx; | |
571 | } | |
572 | ||
573 | static void | |
fba45db2 | 574 | allocate_include_entry (void) |
c906108c SS |
575 | { |
576 | if (inclTable == NULL) | |
577 | { | |
c5aa993b | 578 | inclTable = (InclTable *) |
c906108c SS |
579 | xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); |
580 | memset (inclTable, | |
581 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
582 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; | |
583 | inclIndx = 0; | |
584 | } | |
585 | else if (inclIndx >= inclLength) | |
586 | { | |
587 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
c5aa993b | 588 | inclTable = (InclTable *) |
c906108c | 589 | xrealloc (inclTable, sizeof (InclTable) * inclLength); |
c5aa993b JM |
590 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, |
591 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
c906108c SS |
592 | } |
593 | } | |
594 | ||
595 | /* Global variable to pass the psymtab down to all the routines involved | |
596 | in psymtab to symtab processing. */ | |
597 | static struct partial_symtab *this_symtab_psymtab; | |
598 | ||
5c80ed9d TT |
599 | /* Objfile related to this_symtab_psymtab; set at the same time. */ |
600 | static struct objfile *this_symtab_objfile; | |
601 | ||
c906108c | 602 | /* given the start and end addresses of a compilation unit (or a csect, |
581e13c1 | 603 | at times) process its lines and create appropriate line vectors. */ |
c906108c SS |
604 | |
605 | static void | |
fba45db2 | 606 | process_linenos (CORE_ADDR start, CORE_ADDR end) |
c906108c SS |
607 | { |
608 | int offset, ii; | |
b8b98ad1 | 609 | file_ptr max_offset |
5c80ed9d | 610 | = XCOFF_DATA (this_symtab_objfile)->max_lineno_offset; |
c906108c SS |
611 | |
612 | /* subfile structure for the main compilation unit. */ | |
613 | struct subfile main_subfile; | |
614 | ||
615 | /* In the main source file, any time we see a function entry, we | |
616 | reset this variable to function's absolute starting line number. | |
617 | All the following line numbers in the function are relative to | |
618 | this, and we record absolute line numbers in record_line(). */ | |
619 | ||
620 | unsigned int main_source_baseline = 0; | |
621 | ||
622 | unsigned *firstLine; | |
623 | ||
624 | offset = | |
c5aa993b | 625 | ((struct symloc *) this_symtab_psymtab->read_symtab_private)->lineno_off; |
c906108c SS |
626 | if (offset == 0) |
627 | goto return_after_cleanup; | |
628 | ||
629 | memset (&main_subfile, '\0', sizeof (main_subfile)); | |
630 | ||
631 | if (inclIndx == 0) | |
581e13c1 MS |
632 | /* All source lines were in the main source file. None in include |
633 | files. */ | |
c906108c | 634 | |
c5aa993b JM |
635 | enter_line_range (&main_subfile, offset, 0, start, end, |
636 | &main_source_baseline); | |
c906108c SS |
637 | |
638 | else | |
639 | { | |
640 | /* There was source with line numbers in include files. */ | |
7a78ae4e ND |
641 | |
642 | int linesz = | |
5c80ed9d | 643 | coff_data (this_symtab_objfile->obfd)->local_linesz; |
c906108c | 644 | main_source_baseline = 0; |
7a78ae4e | 645 | |
c5aa993b | 646 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c SS |
647 | { |
648 | struct subfile *tmpSubfile; | |
649 | ||
650 | /* If there is main file source before include file, enter it. */ | |
651 | if (offset < inclTable[ii].begin) | |
652 | { | |
653 | enter_line_range | |
7a78ae4e | 654 | (&main_subfile, offset, inclTable[ii].begin - linesz, |
c906108c SS |
655 | start, 0, &main_source_baseline); |
656 | } | |
657 | ||
c5933f6d JB |
658 | if (strcmp (inclTable[ii].name, last_source_file) == 0) |
659 | { | |
660 | /* The entry in the include table refers to the main source | |
581e13c1 | 661 | file. Add the lines to the main subfile. */ |
c5933f6d JB |
662 | |
663 | main_source_baseline = inclTable[ii].funStartLine; | |
664 | enter_line_range | |
665 | (&main_subfile, inclTable[ii].begin, inclTable[ii].end, | |
666 | start, 0, &main_source_baseline); | |
667 | inclTable[ii].subfile = &main_subfile; | |
668 | } | |
669 | else | |
670 | { | |
c5933f6d | 671 | /* Have a new subfile for the include file. */ |
c906108c | 672 | |
c5933f6d JB |
673 | tmpSubfile = inclTable[ii].subfile = |
674 | (struct subfile *) xmalloc (sizeof (struct subfile)); | |
c906108c | 675 | |
c5933f6d JB |
676 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
677 | firstLine = &(inclTable[ii].funStartLine); | |
678 | ||
679 | /* Enter include file's lines now. */ | |
680 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
681 | inclTable[ii].end, start, 0, firstLine); | |
682 | } | |
c906108c SS |
683 | |
684 | if (offset <= inclTable[ii].end) | |
7a78ae4e | 685 | offset = inclTable[ii].end + linesz; |
c906108c SS |
686 | } |
687 | ||
688 | /* All the include files' line have been processed at this point. Now, | |
c5aa993b | 689 | enter remaining lines of the main file, if any left. */ |
7a78ae4e | 690 | if (offset < max_offset + 1 - linesz) |
c906108c | 691 | { |
c5aa993b | 692 | enter_line_range (&main_subfile, offset, 0, start, end, |
c906108c SS |
693 | &main_source_baseline); |
694 | } | |
695 | } | |
696 | ||
697 | /* Process main file's line numbers. */ | |
698 | if (main_subfile.line_vector) | |
699 | { | |
700 | struct linetable *lineTb, *lv; | |
701 | ||
702 | lv = main_subfile.line_vector; | |
703 | ||
581e13c1 MS |
704 | /* Line numbers are not necessarily ordered. xlc compilation will |
705 | put static function to the end. */ | |
c906108c SS |
706 | |
707 | lineTb = arrange_linetable (lv); | |
708 | if (lv == lineTb) | |
709 | { | |
710 | current_subfile->line_vector = (struct linetable *) | |
711 | xrealloc (lv, (sizeof (struct linetable) | |
712 | + lv->nitems * sizeof (struct linetable_entry))); | |
713 | } | |
714 | else | |
715 | { | |
b8c9b27d | 716 | xfree (lv); |
c906108c SS |
717 | current_subfile->line_vector = lineTb; |
718 | } | |
719 | ||
c5aa993b | 720 | current_subfile->line_vector_length = |
c906108c SS |
721 | current_subfile->line_vector->nitems; |
722 | } | |
723 | ||
724 | /* Now, process included files' line numbers. */ | |
725 | ||
c5aa993b | 726 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c | 727 | { |
c5933f6d | 728 | if (inclTable[ii].subfile != ((struct subfile *) &main_subfile) |
3e43a32a MS |
729 | && (inclTable[ii].subfile)->line_vector) /* Useless if!!! |
730 | FIXMEmgo */ | |
c906108c SS |
731 | { |
732 | struct linetable *lineTb, *lv; | |
733 | ||
734 | lv = (inclTable[ii].subfile)->line_vector; | |
735 | ||
581e13c1 MS |
736 | /* Line numbers are not necessarily ordered. xlc compilation will |
737 | put static function to the end. */ | |
c906108c SS |
738 | |
739 | lineTb = arrange_linetable (lv); | |
740 | ||
741 | push_subfile (); | |
742 | ||
743 | /* For the same include file, we might want to have more than one | |
744 | subfile. This happens if we have something like: | |
745 | ||
c5aa993b JM |
746 | ...... |
747 | #include "foo.h" | |
748 | ...... | |
749 | #include "foo.h" | |
750 | ...... | |
c906108c | 751 | |
581e13c1 | 752 | while foo.h including code in it. (stupid but possible) |
c906108c SS |
753 | Since start_subfile() looks at the name and uses an |
754 | existing one if finds, we need to provide a fake name and | |
755 | fool it. */ | |
756 | ||
757 | #if 0 | |
c5aa993b | 758 | start_subfile (inclTable[ii].name, (char *) 0); |
c906108c SS |
759 | #else |
760 | { | |
761 | /* Pick a fake name that will produce the same results as this | |
762 | one when passed to deduce_language_from_filename. Kludge on | |
763 | top of kludge. */ | |
764 | char *fakename = strrchr (inclTable[ii].name, '.'); | |
a109c7c1 | 765 | |
c906108c SS |
766 | if (fakename == NULL) |
767 | fakename = " ?"; | |
c5aa993b | 768 | start_subfile (fakename, (char *) 0); |
b8c9b27d | 769 | xfree (current_subfile->name); |
c906108c | 770 | } |
c2d11a7d | 771 | current_subfile->name = xstrdup (inclTable[ii].name); |
c906108c SS |
772 | #endif |
773 | ||
774 | if (lv == lineTb) | |
775 | { | |
776 | current_subfile->line_vector = | |
777 | (struct linetable *) xrealloc | |
c5aa993b JM |
778 | (lv, (sizeof (struct linetable) |
779 | + lv->nitems * sizeof (struct linetable_entry))); | |
c906108c SS |
780 | |
781 | } | |
782 | else | |
783 | { | |
b8c9b27d | 784 | xfree (lv); |
c906108c SS |
785 | current_subfile->line_vector = lineTb; |
786 | } | |
787 | ||
c5aa993b | 788 | current_subfile->line_vector_length = |
c906108c | 789 | current_subfile->line_vector->nitems; |
c5aa993b | 790 | start_subfile (pop_subfile (), (char *) 0); |
c906108c SS |
791 | } |
792 | } | |
793 | ||
c5aa993b | 794 | return_after_cleanup: |
c906108c SS |
795 | |
796 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
797 | inclIndx = 0; | |
798 | ||
799 | /* Start with a fresh subfile structure for the next file. */ | |
800 | memset (&main_subfile, '\0', sizeof (struct subfile)); | |
801 | } | |
802 | ||
c295b2e5 | 803 | static void |
fba45db2 | 804 | aix_process_linenos (void) |
c906108c | 805 | { |
316a8b21 TG |
806 | /* There is no linenos to read if there are only dwarf info. */ |
807 | if (this_symtab_psymtab == NULL) | |
808 | return; | |
809 | ||
581e13c1 | 810 | /* Process line numbers and enter them into line vector. */ |
c906108c SS |
811 | process_linenos (last_source_start_addr, cur_src_end_addr); |
812 | } | |
813 | ||
814 | ||
815 | /* Enter a given range of lines into the line vector. | |
816 | can be called in the following two ways: | |
3e43a32a MS |
817 | enter_line_range (subfile, beginoffset, endoffset, |
818 | startaddr, 0, firstLine) or | |
819 | enter_line_range (subfile, beginoffset, 0, | |
820 | startaddr, endaddr, firstLine) | |
c906108c SS |
821 | |
822 | endoffset points to the last line table entry that we should pay | |
823 | attention to. */ | |
824 | ||
825 | static void | |
3e43a32a MS |
826 | enter_line_range (struct subfile *subfile, unsigned beginoffset, |
827 | unsigned endoffset, /* offsets to line table */ | |
fba45db2 KB |
828 | CORE_ADDR startaddr, /* offsets to line table */ |
829 | CORE_ADDR endaddr, unsigned *firstLine) | |
c906108c | 830 | { |
5c80ed9d | 831 | struct objfile *objfile = this_symtab_objfile; |
fbf65064 | 832 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
833 | unsigned int curoffset; |
834 | CORE_ADDR addr; | |
7a78ae4e | 835 | void *ext_lnno; |
c906108c SS |
836 | struct internal_lineno int_lnno; |
837 | unsigned int limit_offset; | |
838 | bfd *abfd; | |
7a78ae4e | 839 | int linesz; |
c906108c SS |
840 | |
841 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) | |
842 | return; | |
843 | curoffset = beginoffset; | |
b8b98ad1 | 844 | limit_offset = XCOFF_DATA (objfile)->max_lineno_offset; |
c906108c SS |
845 | |
846 | if (endoffset != 0) | |
847 | { | |
848 | if (endoffset >= limit_offset) | |
849 | { | |
23136709 | 850 | complaint (&symfile_complaints, |
e2e0b3e5 | 851 | _("Bad line table offset in C_EINCL directive")); |
c906108c SS |
852 | return; |
853 | } | |
854 | limit_offset = endoffset; | |
855 | } | |
856 | else | |
857 | limit_offset -= 1; | |
7a78ae4e | 858 | |
fbf65064 | 859 | abfd = objfile->obfd; |
7a78ae4e ND |
860 | linesz = coff_data (abfd)->local_linesz; |
861 | ext_lnno = alloca (linesz); | |
c906108c SS |
862 | |
863 | while (curoffset <= limit_offset) | |
864 | { | |
865 | bfd_seek (abfd, curoffset, SEEK_SET); | |
3a42e9d0 | 866 | bfd_bread (ext_lnno, linesz, abfd); |
7a78ae4e | 867 | bfd_coff_swap_lineno_in (abfd, ext_lnno, &int_lnno); |
c906108c SS |
868 | |
869 | /* Find the address this line represents. */ | |
870 | addr = (int_lnno.l_lnno | |
871 | ? int_lnno.l_addr.l_paddr | |
872 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
fbf65064 | 873 | addr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
874 | |
875 | if (addr < startaddr || (endaddr && addr >= endaddr)) | |
876 | return; | |
877 | ||
878 | if (int_lnno.l_lnno == 0) | |
879 | { | |
880 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
fbf65064 | 881 | record_line (subfile, 0, gdbarch_addr_bits_remove (gdbarch, addr)); |
c906108c SS |
882 | --(*firstLine); |
883 | } | |
884 | else | |
fbf65064 UW |
885 | record_line (subfile, *firstLine + int_lnno.l_lnno, |
886 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
7a78ae4e | 887 | curoffset += linesz; |
c906108c SS |
888 | } |
889 | } | |
890 | ||
891 | ||
892 | /* Save the vital information for use when closing off the current file. | |
893 | NAME is the file name the symbols came from, START_ADDR is the first | |
894 | text address for the file, and SIZE is the number of bytes of text. */ | |
895 | ||
896 | #define complete_symtab(name, start_addr) { \ | |
1b36a34b JK |
897 | last_source_file = xstrdup (name); \ |
898 | last_source_start_addr = start_addr; \ | |
c906108c SS |
899 | } |
900 | ||
901 | ||
902 | /* Refill the symbol table input buffer | |
903 | and set the variables that control fetching entries from it. | |
904 | Reports an error if no data available. | |
905 | This function can read past the end of the symbol table | |
906 | (into the string table) but this does no harm. */ | |
907 | ||
ec92004f JB |
908 | /* Create a new minimal symbol (using prim_record_minimal_symbol_and_info). |
909 | ||
910 | Arguments are: | |
911 | ||
912 | NAME - the symbol's name (but if NAME starts with a period, that | |
913 | leading period is discarded). | |
914 | ADDRESS - the symbol's address. | |
915 | MS_TYPE - the symbol's type. | |
916 | N_SCNUM - the symbol's XCOFF section number. | |
917 | OBJFILE - the objfile associated with the minimal symbol. */ | |
c906108c | 918 | |
ec92004f JB |
919 | static void |
920 | record_minimal_symbol (const char *name, CORE_ADDR address, | |
921 | enum minimal_symbol_type ms_type, | |
922 | int n_scnum, | |
923 | struct objfile *objfile) | |
924 | { | |
ec92004f JB |
925 | int secnum; |
926 | asection *bfd_sect; | |
927 | ||
928 | if (name[0] == '.') | |
929 | ++name; | |
930 | ||
931 | xcoff_secnum_to_sections (n_scnum, objfile, &bfd_sect, &secnum); | |
932 | prim_record_minimal_symbol_and_info (name, address, ms_type, | |
933 | secnum, bfd_sect, objfile); | |
934 | } | |
c906108c | 935 | |
581e13c1 MS |
936 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
937 | nested. At any given time, a symbol can only be in one static block. | |
938 | This is the base address of current static block, zero if non exists. */ | |
c5aa993b | 939 | |
c906108c SS |
940 | static int static_block_base = 0; |
941 | ||
942 | /* Section number for the current static block. */ | |
943 | ||
944 | static int static_block_section = -1; | |
945 | ||
581e13c1 | 946 | /* true if space for symbol name has been allocated. */ |
c906108c SS |
947 | |
948 | static int symname_alloced = 0; | |
949 | ||
950 | /* Next symbol to read. Pointer into raw seething symbol table. */ | |
951 | ||
952 | static char *raw_symbol; | |
953 | ||
954 | /* This is the function which stabsread.c calls to get symbol | |
955 | continuations. */ | |
956 | ||
957 | static char * | |
fba45db2 | 958 | xcoff_next_symbol_text (struct objfile *objfile) |
c906108c SS |
959 | { |
960 | struct internal_syment symbol; | |
c906108c | 961 | char *retval; |
a109c7c1 | 962 | |
581e13c1 | 963 | /* FIXME: is this the same as the passed arg? */ |
5c80ed9d TT |
964 | if (this_symtab_objfile) |
965 | objfile = this_symtab_objfile; | |
c906108c SS |
966 | |
967 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); | |
968 | if (symbol.n_zeroes) | |
969 | { | |
e2e0b3e5 | 970 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
971 | |
972 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 973 | code does something reasonable. */ |
c906108c SS |
974 | retval = ""; |
975 | } | |
976 | else if (symbol.n_sclass & 0x80) | |
977 | { | |
b8b98ad1 | 978 | retval = XCOFF_DATA (objfile)->debugsec + symbol.n_offset; |
3e43a32a | 979 | raw_symbol += coff_data (objfile->obfd)->local_symesz; |
c906108c SS |
980 | ++symnum; |
981 | } | |
982 | else | |
983 | { | |
e2e0b3e5 | 984 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
985 | |
986 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 987 | code does something reasonable. */ |
c906108c SS |
988 | retval = ""; |
989 | } | |
990 | return retval; | |
991 | } | |
992 | ||
993 | /* Read symbols for a given partial symbol table. */ | |
994 | ||
995 | static void | |
5c80ed9d | 996 | read_xcoff_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 997 | { |
c906108c | 998 | bfd *abfd = objfile->obfd; |
581e13c1 | 999 | char *raw_auxptr; /* Pointer to first raw aux entry for sym. */ |
b8b98ad1 TT |
1000 | struct coff_symfile_info *xcoff = XCOFF_DATA (objfile); |
1001 | char *strtbl = xcoff->strtbl; | |
1002 | char *debugsec = xcoff->debugsec; | |
554d387d | 1003 | const char *debugfmt = bfd_xcoff_is_xcoff64 (abfd) ? "XCOFF64" : "XCOFF"; |
c906108c SS |
1004 | |
1005 | struct internal_syment symbol[1]; | |
1006 | union internal_auxent main_aux; | |
1007 | struct coff_symbol cs[1]; | |
1008 | CORE_ADDR file_start_addr = 0; | |
1009 | CORE_ADDR file_end_addr = 0; | |
1010 | ||
1011 | int next_file_symnum = -1; | |
1012 | unsigned int max_symnum; | |
1013 | int just_started = 1; | |
1014 | int depth = 0; | |
1015 | int fcn_start_addr = 0; | |
1016 | ||
238ae9af | 1017 | struct coff_symbol fcn_stab_saved = { 0 }; |
c906108c | 1018 | |
581e13c1 | 1019 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
3672b1be | 1020 | union internal_auxent fcn_aux_saved = main_aux; |
c906108c SS |
1021 | struct context_stack *new; |
1022 | ||
581e13c1 | 1023 | char *filestring = " _start_ "; /* Name of the current file. */ |
c906108c | 1024 | |
40301fb7 | 1025 | const char *last_csect_name; /* Last seen csect's name. */ |
c906108c SS |
1026 | |
1027 | this_symtab_psymtab = pst; | |
5c80ed9d | 1028 | this_symtab_objfile = objfile; |
c906108c SS |
1029 | |
1030 | /* Get the appropriate COFF "constants" related to the file we're | |
581e13c1 | 1031 | handling. */ |
c906108c SS |
1032 | local_symesz = coff_data (abfd)->local_symesz; |
1033 | ||
1034 | last_source_file = NULL; | |
1035 | last_csect_name = 0; | |
c906108c SS |
1036 | |
1037 | start_stabs (); | |
c5aa993b | 1038 | start_symtab (filestring, (char *) NULL, file_start_addr); |
7a78ae4e | 1039 | record_debugformat (debugfmt); |
c5aa993b | 1040 | symnum = ((struct symloc *) pst->read_symtab_private)->first_symnum; |
c906108c | 1041 | max_symnum = |
c5aa993b | 1042 | symnum + ((struct symloc *) pst->read_symtab_private)->numsyms; |
c906108c SS |
1043 | first_object_file_end = 0; |
1044 | ||
b8b98ad1 | 1045 | raw_symbol = xcoff->symtbl + symnum * local_symesz; |
c906108c SS |
1046 | |
1047 | while (symnum < max_symnum) | |
1048 | { | |
c906108c SS |
1049 | QUIT; /* make this command interruptable. */ |
1050 | ||
1051 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
581e13c1 | 1052 | /* read one symbol into `cs' structure. After processing the |
c5aa993b | 1053 | whole symbol table, only string table will be kept in memory, |
581e13c1 | 1054 | symbol table and debug section of xcoff will be freed. Thus |
c5aa993b | 1055 | we can mark symbols with names in string table as |
581e13c1 | 1056 | `alloced'. */ |
c906108c SS |
1057 | { |
1058 | int ii; | |
1059 | ||
1060 | /* Swap and align the symbol into a reasonable C structure. */ | |
1061 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1062 | ||
1063 | cs->c_symnum = symnum; | |
1064 | cs->c_naux = symbol->n_numaux; | |
1065 | if (symbol->n_zeroes) | |
1066 | { | |
1067 | symname_alloced = 0; | |
1068 | /* We must use the original, unswapped, name here so the name field | |
1069 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1070 | we use the new field, it gets overwritten for each symbol. */ | |
c5aa993b | 1071 | cs->c_name = ((struct external_syment *) raw_symbol)->e.e_name; |
c906108c SS |
1072 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1073 | '\0'-terminated. */ | |
1074 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1075 | { | |
1076 | char *p; | |
a109c7c1 | 1077 | |
4a146b47 | 1078 | p = obstack_alloc (&objfile->objfile_obstack, E_SYMNMLEN + 1); |
c906108c SS |
1079 | strncpy (p, cs->c_name, E_SYMNMLEN); |
1080 | p[E_SYMNMLEN] = '\0'; | |
1081 | cs->c_name = p; | |
1082 | symname_alloced = 1; | |
1083 | } | |
1084 | } | |
1085 | else if (symbol->n_sclass & 0x80) | |
1086 | { | |
1087 | cs->c_name = debugsec + symbol->n_offset; | |
1088 | symname_alloced = 0; | |
1089 | } | |
1090 | else | |
1091 | { | |
1092 | /* in string table */ | |
c5aa993b | 1093 | cs->c_name = strtbl + (int) symbol->n_offset; |
c906108c SS |
1094 | symname_alloced = 1; |
1095 | } | |
1096 | cs->c_value = symbol->n_value; | |
1097 | cs->c_sclass = symbol->n_sclass; | |
1098 | cs->c_secnum = symbol->n_scnum; | |
c5aa993b | 1099 | cs->c_type = (unsigned) symbol->n_type; |
c906108c | 1100 | |
7a78ae4e | 1101 | raw_symbol += local_symesz; |
c906108c SS |
1102 | ++symnum; |
1103 | ||
1104 | /* Save addr of first aux entry. */ | |
1105 | raw_auxptr = raw_symbol; | |
1106 | ||
1107 | /* Skip all the auxents associated with this symbol. */ | |
1108 | for (ii = symbol->n_numaux; ii; --ii) | |
1109 | { | |
1110 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1111 | ++symnum; | |
1112 | } | |
1113 | } | |
1114 | ||
581e13c1 | 1115 | /* if symbol name starts with ".$" or "$", ignore it. */ |
c906108c SS |
1116 | if (cs->c_name[0] == '$' |
1117 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1118 | continue; | |
1119 | ||
1120 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
1121 | { | |
1122 | if (last_source_file) | |
1123 | { | |
3e43a32a MS |
1124 | pst->symtab = end_symtab (cur_src_end_addr, objfile, |
1125 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1126 | end_stabs (); |
1127 | } | |
1128 | ||
1129 | start_stabs (); | |
c5aa993b | 1130 | start_symtab ("_globals_", (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1131 | record_debugformat (debugfmt); |
c906108c | 1132 | cur_src_end_addr = first_object_file_end; |
581e13c1 | 1133 | /* Done with all files, everything from here on is globals. */ |
c906108c SS |
1134 | } |
1135 | ||
c906108c SS |
1136 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) |
1137 | && cs->c_naux == 1) | |
1138 | { | |
1139 | /* Dealing with a symbol with a csect entry. */ | |
1140 | ||
1141 | #define CSECT(PP) ((PP)->x_csect) | |
1142 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1143 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1144 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1145 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1146 | ||
1147 | /* Convert the auxent to something we can access. */ | |
1148 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1149 | 0, cs->c_naux, &main_aux); | |
1150 | ||
1151 | switch (CSECT_SMTYP (&main_aux)) | |
1152 | { | |
1153 | ||
1154 | case XTY_ER: | |
1155 | /* Ignore all external references. */ | |
1156 | continue; | |
1157 | ||
1158 | case XTY_SD: | |
1159 | /* A section description. */ | |
1160 | { | |
1161 | switch (CSECT_SCLAS (&main_aux)) | |
1162 | { | |
1163 | ||
1164 | case XMC_PR: | |
1165 | { | |
1166 | ||
1167 | /* A program csect is seen. We have to allocate one | |
c5aa993b JM |
1168 | symbol table for each program csect. Normally gdb |
1169 | prefers one symtab for each source file. In case | |
1170 | of AIX, one source file might include more than one | |
1171 | [PR] csect, and they don't have to be adjacent in | |
581e13c1 | 1172 | terms of the space they occupy in memory. Thus, one |
c5aa993b JM |
1173 | single source file might get fragmented in the |
1174 | memory and gdb's file start and end address | |
1175 | approach does not work! GCC (and I think xlc) seem | |
1176 | to put all the code in the unnamed program csect. */ | |
c906108c SS |
1177 | |
1178 | if (last_csect_name) | |
1179 | { | |
1180 | complete_symtab (filestring, file_start_addr); | |
1181 | cur_src_end_addr = file_end_addr; | |
3e43a32a MS |
1182 | end_symtab (file_end_addr, objfile, |
1183 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1184 | end_stabs (); |
1185 | start_stabs (); | |
1186 | /* Give all csects for this source file the same | |
1187 | name. */ | |
c5aa993b | 1188 | start_symtab (filestring, NULL, (CORE_ADDR) 0); |
7a78ae4e | 1189 | record_debugformat (debugfmt); |
c906108c SS |
1190 | } |
1191 | ||
1192 | /* If this is the very first csect seen, | |
581e13c1 | 1193 | basically `__start'. */ |
c906108c SS |
1194 | if (just_started) |
1195 | { | |
1196 | first_object_file_end | |
1197 | = cs->c_value + CSECT_LEN (&main_aux); | |
1198 | just_started = 0; | |
1199 | } | |
1200 | ||
1201 | file_start_addr = | |
1202 | cs->c_value + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1203 | SECT_OFF_TEXT (objfile)); |
c906108c SS |
1204 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); |
1205 | ||
40301fb7 JB |
1206 | if (cs->c_name && (cs->c_name[0] == '.' || cs->c_name[0] == '@')) |
1207 | last_csect_name = cs->c_name; | |
c906108c SS |
1208 | } |
1209 | continue; | |
1210 | ||
1211 | /* All other symbols are put into the minimal symbol | |
1212 | table only. */ | |
1213 | ||
1214 | case XMC_RW: | |
1215 | continue; | |
1216 | ||
1217 | case XMC_TC0: | |
1218 | continue; | |
1219 | ||
1220 | case XMC_TC: | |
1221 | continue; | |
1222 | ||
1223 | default: | |
1224 | /* Ignore the symbol. */ | |
1225 | continue; | |
1226 | } | |
1227 | } | |
1228 | break; | |
1229 | ||
1230 | case XTY_LD: | |
1231 | ||
1232 | switch (CSECT_SCLAS (&main_aux)) | |
1233 | { | |
1234 | case XMC_PR: | |
581e13c1 | 1235 | /* a function entry point. */ |
c906108c SS |
1236 | function_entry_point: |
1237 | ||
1238 | fcn_start_addr = cs->c_value; | |
1239 | ||
1240 | /* save the function header info, which will be used | |
581e13c1 | 1241 | when `.bf' is seen. */ |
c906108c SS |
1242 | fcn_cs_saved = *cs; |
1243 | fcn_aux_saved = main_aux; | |
1244 | continue; | |
1245 | ||
1246 | case XMC_GL: | |
581e13c1 | 1247 | /* shared library function trampoline code entry point. */ |
c906108c SS |
1248 | continue; |
1249 | ||
1250 | case XMC_DS: | |
1251 | /* The symbols often have the same names as debug symbols for | |
1252 | functions, and confuse lookup_symbol. */ | |
1253 | continue; | |
1254 | ||
1255 | default: | |
1256 | /* xlc puts each variable in a separate csect, so we get | |
1257 | an XTY_SD for each variable. But gcc puts several | |
1258 | variables in a csect, so that each variable only gets | |
581e13c1 | 1259 | an XTY_LD. This will typically be XMC_RW; I suspect |
c906108c SS |
1260 | XMC_RO and XMC_BS might be possible too. |
1261 | These variables are put in the minimal symbol table | |
1262 | only. */ | |
1263 | continue; | |
1264 | } | |
1265 | break; | |
1266 | ||
1267 | case XTY_CM: | |
1268 | /* Common symbols are put into the minimal symbol table only. */ | |
1269 | continue; | |
1270 | ||
1271 | default: | |
1272 | break; | |
1273 | } | |
1274 | } | |
1275 | ||
977adac5 ND |
1276 | /* If explicitly specified as a function, treat is as one. This check |
1277 | evaluates to true for @FIX* bigtoc CSECT symbols, so it must occur | |
1278 | after the above CSECT check. */ | |
1279 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
1280 | { | |
1281 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1282 | 0, cs->c_naux, &main_aux); | |
1283 | goto function_entry_point; | |
1284 | } | |
1285 | ||
c906108c SS |
1286 | switch (cs->c_sclass) |
1287 | { | |
c906108c SS |
1288 | case C_FILE: |
1289 | ||
1290 | /* c_value field contains symnum of next .file entry in table | |
581e13c1 | 1291 | or symnum of first global after last .file. */ |
c906108c SS |
1292 | |
1293 | next_file_symnum = cs->c_value; | |
1294 | ||
1295 | /* Complete symbol table for last object file containing | |
581e13c1 | 1296 | debugging information. */ |
c906108c SS |
1297 | |
1298 | /* Whether or not there was a csect in the previous file, we | |
1299 | have to call `end_stabs' and `start_stabs' to reset | |
1300 | type_vector, line_vector, etc. structures. */ | |
1301 | ||
1302 | complete_symtab (filestring, file_start_addr); | |
1303 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1304 | end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1305 | end_stabs (); |
1306 | ||
3e43a32a MS |
1307 | /* XCOFF, according to the AIX 3.2 documentation, puts the |
1308 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
1309 | do things the standard COFF way and put it in the auxent. | |
1310 | We use the auxent if the symbol is ".file" and an auxent | |
1311 | exists, otherwise use the symbol itself. Simple | |
1312 | enough. */ | |
c906108c SS |
1313 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) |
1314 | { | |
1315 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1316 | 0, cs->c_naux, &main_aux); | |
1317 | filestring = coff_getfilename (&main_aux, objfile); | |
1318 | } | |
1319 | else | |
1320 | filestring = cs->c_name; | |
1321 | ||
1322 | start_stabs (); | |
c5aa993b | 1323 | start_symtab (filestring, (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1324 | record_debugformat (debugfmt); |
c906108c SS |
1325 | last_csect_name = 0; |
1326 | ||
581e13c1 | 1327 | /* reset file start and end addresses. A compilation unit |
3e43a32a | 1328 | with no text (only data) should have zero file |
581e13c1 | 1329 | boundaries. */ |
c906108c SS |
1330 | file_start_addr = file_end_addr = 0; |
1331 | break; | |
1332 | ||
1333 | case C_FUN: | |
1334 | fcn_stab_saved = *cs; | |
1335 | break; | |
1336 | ||
1337 | case C_FCN: | |
7ecb6532 | 1338 | if (strcmp (cs->c_name, ".bf") == 0) |
c906108c SS |
1339 | { |
1340 | CORE_ADDR off = ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1341 | SECT_OFF_TEXT (objfile)); |
a109c7c1 | 1342 | |
c906108c SS |
1343 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1344 | 0, cs->c_naux, &main_aux); | |
1345 | ||
1346 | within_function = 1; | |
1347 | ||
1348 | new = push_context (0, fcn_start_addr + off); | |
1349 | ||
c5aa993b | 1350 | new->name = define_symbol |
c906108c SS |
1351 | (fcn_cs_saved.c_value + off, |
1352 | fcn_stab_saved.c_name, 0, 0, objfile); | |
1353 | if (new->name != NULL) | |
b8fbeb18 | 1354 | SYMBOL_SECTION (new->name) = SECT_OFF_TEXT (objfile); |
c906108c | 1355 | } |
7ecb6532 | 1356 | else if (strcmp (cs->c_name, ".ef") == 0) |
c906108c | 1357 | { |
c906108c SS |
1358 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1359 | 0, cs->c_naux, &main_aux); | |
1360 | ||
1361 | /* The value of .ef is the address of epilogue code; | |
c5aa993b | 1362 | not useful for gdb. */ |
c906108c | 1363 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
c5aa993b | 1364 | contains number of lines to '}' */ |
c906108c SS |
1365 | |
1366 | if (context_stack_depth <= 0) | |
581e13c1 | 1367 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1368 | ef_complaint (cs->c_symnum); |
c906108c SS |
1369 | within_function = 0; |
1370 | break; | |
1371 | } | |
1372 | new = pop_context (); | |
1373 | /* Stack must be empty now. */ | |
1374 | if (context_stack_depth > 0 || new == NULL) | |
1375 | { | |
23136709 | 1376 | ef_complaint (cs->c_symnum); |
c906108c SS |
1377 | within_function = 0; |
1378 | break; | |
1379 | } | |
1380 | ||
1381 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1382 | new->start_addr, | |
1383 | (fcn_cs_saved.c_value | |
1384 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1385 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1386 | SECT_OFF_TEXT (objfile))), |
c906108c SS |
1387 | objfile); |
1388 | within_function = 0; | |
1389 | } | |
1390 | break; | |
1391 | ||
1392 | case C_BSTAT: | |
1393 | /* Begin static block. */ | |
1394 | { | |
1395 | struct internal_syment symbol; | |
1396 | ||
1397 | read_symbol (&symbol, cs->c_value); | |
1398 | static_block_base = symbol.n_value; | |
1399 | static_block_section = | |
1400 | secnum_to_section (symbol.n_scnum, objfile); | |
1401 | } | |
1402 | break; | |
1403 | ||
1404 | case C_ESTAT: | |
1405 | /* End of static block. */ | |
1406 | static_block_base = 0; | |
1407 | static_block_section = -1; | |
1408 | break; | |
1409 | ||
1410 | case C_ARG: | |
1411 | case C_REGPARM: | |
1412 | case C_REG: | |
1413 | case C_TPDEF: | |
1414 | case C_STRTAG: | |
1415 | case C_UNTAG: | |
1416 | case C_ENTAG: | |
1417 | { | |
3e43a32a MS |
1418 | complaint (&symfile_complaints, |
1419 | _("Unrecognized storage class %d."), | |
23136709 | 1420 | cs->c_sclass); |
c906108c SS |
1421 | } |
1422 | break; | |
1423 | ||
1424 | case C_LABEL: | |
1425 | case C_NULL: | |
1426 | /* Ignore these. */ | |
1427 | break; | |
1428 | ||
1429 | case C_HIDEXT: | |
1430 | case C_STAT: | |
1431 | break; | |
1432 | ||
1433 | case C_BINCL: | |
1434 | /* beginning of include file */ | |
1435 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
581e13c1 MS |
1436 | order. Thus, when wee see them, we might not know enough info |
1437 | to process them. Thus, we'll be saving them into a table | |
1438 | (inclTable) and postpone their processing. */ | |
c906108c SS |
1439 | |
1440 | record_include_begin (cs); | |
1441 | break; | |
1442 | ||
1443 | case C_EINCL: | |
1444 | /* End of include file. */ | |
1445 | /* See the comment after case C_BINCL. */ | |
1446 | record_include_end (cs); | |
1447 | break; | |
1448 | ||
1449 | case C_BLOCK: | |
7ecb6532 | 1450 | if (strcmp (cs->c_name, ".bb") == 0) |
c906108c SS |
1451 | { |
1452 | depth++; | |
1453 | new = push_context (depth, | |
1454 | (cs->c_value | |
1455 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1456 | SECT_OFF_TEXT (objfile)))); |
c906108c | 1457 | } |
7ecb6532 | 1458 | else if (strcmp (cs->c_name, ".eb") == 0) |
c906108c SS |
1459 | { |
1460 | if (context_stack_depth <= 0) | |
581e13c1 | 1461 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1462 | eb_complaint (cs->c_symnum); |
c906108c SS |
1463 | break; |
1464 | } | |
1465 | new = pop_context (); | |
1466 | if (depth-- != new->depth) | |
1467 | { | |
23136709 | 1468 | eb_complaint (cs->c_symnum); |
c906108c SS |
1469 | break; |
1470 | } | |
1471 | if (local_symbols && context_stack_depth > 0) | |
1472 | { | |
1473 | /* Make a block for the local symbols within. */ | |
1474 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1475 | new->start_addr, | |
1476 | (cs->c_value | |
1477 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1478 | SECT_OFF_TEXT (objfile))), |
c906108c SS |
1479 | objfile); |
1480 | } | |
1481 | local_symbols = new->locals; | |
1482 | } | |
1483 | break; | |
1484 | ||
1485 | default: | |
1486 | process_xcoff_symbol (cs, objfile); | |
1487 | break; | |
1488 | } | |
1489 | } | |
1490 | ||
1491 | if (last_source_file) | |
1492 | { | |
1493 | struct symtab *s; | |
1494 | ||
1495 | complete_symtab (filestring, file_start_addr); | |
1496 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1497 | s = end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1498 | /* When reading symbols for the last C_FILE of the objfile, try |
1499 | to make sure that we set pst->symtab to the symtab for the | |
1500 | file, not to the _globals_ symtab. I'm not sure whether this | |
1501 | actually works right or when/if it comes up. */ | |
1502 | if (pst->symtab == NULL) | |
1503 | pst->symtab = s; | |
1504 | end_stabs (); | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
1509 | (SYMBOL2) = (struct symbol *) \ | |
4a146b47 | 1510 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); \ |
c906108c | 1511 | *(SYMBOL2) = *(SYMBOL1); |
c5aa993b JM |
1512 | |
1513 | ||
c906108c | 1514 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ |
3e43a32a MS |
1515 | ((ALLOCED) ? (NAME) : obsavestring ((NAME), strlen (NAME), \ |
1516 | &objfile->objfile_obstack)) | |
c906108c SS |
1517 | |
1518 | ||
581e13c1 | 1519 | /* process one xcoff symbol. */ |
c906108c SS |
1520 | |
1521 | static struct symbol * | |
aa1ee363 | 1522 | process_xcoff_symbol (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
1523 | { |
1524 | struct symbol onesymbol; | |
52f0bd74 | 1525 | struct symbol *sym = &onesymbol; |
c906108c SS |
1526 | struct symbol *sym2 = NULL; |
1527 | char *name, *pp; | |
1528 | ||
1529 | int sec; | |
1530 | CORE_ADDR off; | |
1531 | ||
1532 | if (cs->c_secnum < 0) | |
1533 | { | |
1534 | /* The value is a register number, offset within a frame, etc., | |
c5aa993b | 1535 | and does not get relocated. */ |
c906108c SS |
1536 | off = 0; |
1537 | sec = -1; | |
1538 | } | |
1539 | else | |
1540 | { | |
1541 | sec = secnum_to_section (cs->c_secnum, objfile); | |
1542 | off = ANOFFSET (objfile->section_offsets, sec); | |
1543 | } | |
1544 | ||
1545 | name = cs->c_name; | |
1546 | if (name[0] == '.') | |
1547 | ++name; | |
1548 | ||
1549 | memset (sym, '\0', sizeof (struct symbol)); | |
1550 | ||
1551 | /* default assumptions */ | |
7a78ae4e | 1552 | SYMBOL_VALUE_ADDRESS (sym) = cs->c_value + off; |
176620f1 | 1553 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1554 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); |
1555 | ||
1556 | if (ISFCN (cs->c_type)) | |
1557 | { | |
1558 | /* At this point, we don't know the type of the function. This | |
c5aa993b JM |
1559 | will be patched with the type from its stab entry later on in |
1560 | patch_block_stabs (), unless the file was compiled without -g. */ | |
c906108c | 1561 | |
3567439c | 1562 | SYMBOL_SET_LINKAGE_NAME (sym, SYMNAME_ALLOC (name, symname_alloced)); |
46bf5051 | 1563 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_text_symbol; |
c906108c SS |
1564 | |
1565 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1566 | SYMBOL_DUP (sym, sym2); | |
1567 | ||
1568 | if (cs->c_sclass == C_EXT) | |
1569 | add_symbol_to_list (sym2, &global_symbols); | |
1570 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1571 | add_symbol_to_list (sym2, &file_symbols); | |
1572 | } | |
1573 | else | |
1574 | { | |
581e13c1 | 1575 | /* In case we can't figure out the type, provide default. */ |
46bf5051 | 1576 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
1577 | |
1578 | switch (cs->c_sclass) | |
1579 | { | |
1580 | #if 0 | |
c5aa993b JM |
1581 | /* The values of functions and global symbols are now resolved |
1582 | via the global_sym_chain in stabsread.c. */ | |
c906108c SS |
1583 | case C_FUN: |
1584 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1585 | add_stab_to_list (name, &global_stabs); | |
1586 | else | |
1587 | add_stab_to_list (name, &file_stabs); | |
1588 | break; | |
1589 | ||
1590 | case C_GSYM: | |
1591 | add_stab_to_list (name, &global_stabs); | |
1592 | break; | |
1593 | #endif | |
1594 | ||
1595 | case C_BCOMM: | |
1596 | common_block_start (cs->c_name, objfile); | |
1597 | break; | |
1598 | ||
1599 | case C_ECOMM: | |
1600 | common_block_end (objfile); | |
1601 | break; | |
1602 | ||
1603 | default: | |
e2e0b3e5 | 1604 | complaint (&symfile_complaints, _("Unexpected storage class: %d"), |
23136709 | 1605 | cs->c_sclass); |
c906108c SS |
1606 | /* FALLTHROUGH */ |
1607 | ||
1608 | case C_DECL: | |
1609 | case C_PSYM: | |
1610 | case C_RPSYM: | |
1611 | case C_ECOML: | |
1612 | case C_LSYM: | |
1613 | case C_RSYM: | |
1614 | case C_GSYM: | |
1615 | ||
1616 | { | |
1617 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1618 | if (sym != NULL) | |
1619 | { | |
1620 | SYMBOL_SECTION (sym) = sec; | |
1621 | } | |
1622 | return sym; | |
1623 | } | |
1624 | ||
1625 | case C_STSYM: | |
1626 | ||
1627 | /* For xlc (not GCC), the 'V' symbol descriptor is used for | |
1628 | all statics and we need to distinguish file-scope versus | |
1629 | function-scope using within_function. We do this by | |
1630 | changing the string we pass to define_symbol to use 'S' | |
1631 | where we need to, which is not necessarily super-clean, | |
1632 | but seems workable enough. */ | |
1633 | ||
9b13a2db PM |
1634 | if (*name == ':') |
1635 | return NULL; | |
1636 | ||
ed4b0e6a | 1637 | pp = strchr (name, ':'); |
9b13a2db | 1638 | if (pp == NULL) |
c906108c SS |
1639 | return NULL; |
1640 | ||
1641 | ++pp; | |
1642 | if (*pp == 'V' && !within_function) | |
1643 | *pp = 'S'; | |
1644 | sym = define_symbol ((cs->c_value | |
1645 | + ANOFFSET (objfile->section_offsets, | |
1646 | static_block_section)), | |
1647 | cs->c_name, 0, 0, objfile); | |
1648 | if (sym != NULL) | |
1649 | { | |
7a78ae4e | 1650 | SYMBOL_VALUE_ADDRESS (sym) += static_block_base; |
c906108c SS |
1651 | SYMBOL_SECTION (sym) = static_block_section; |
1652 | } | |
1653 | return sym; | |
1654 | ||
1655 | } | |
1656 | } | |
1657 | return sym2; | |
1658 | } | |
1659 | ||
1660 | /* Extract the file name from the aux entry of a C_FILE symbol. | |
1661 | Result is in static storage and is only good for temporary use. */ | |
1662 | ||
1663 | static char * | |
fba45db2 | 1664 | coff_getfilename (union internal_auxent *aux_entry, struct objfile *objfile) |
c906108c SS |
1665 | { |
1666 | static char buffer[BUFSIZ]; | |
1667 | ||
1668 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
b8b98ad1 TT |
1669 | strcpy (buffer, (XCOFF_DATA (objfile)->strtbl |
1670 | + aux_entry->x_file.x_n.x_offset)); | |
c906108c SS |
1671 | else |
1672 | { | |
1673 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1674 | buffer[FILNMLEN] = '\0'; | |
1675 | } | |
1676 | return (buffer); | |
1677 | } | |
1678 | ||
1679 | /* Set *SYMBOL to symbol number symno in symtbl. */ | |
1680 | static void | |
fba45db2 | 1681 | read_symbol (struct internal_syment *symbol, int symno) |
c906108c | 1682 | { |
5c80ed9d | 1683 | struct coff_symfile_info *xcoff = XCOFF_DATA (this_symtab_objfile); |
b8b98ad1 TT |
1684 | int nsyms = xcoff->symtbl_num_syms; |
1685 | char *stbl = xcoff->symtbl; | |
a109c7c1 | 1686 | |
c906108c SS |
1687 | if (symno < 0 || symno >= nsyms) |
1688 | { | |
e2e0b3e5 | 1689 | complaint (&symfile_complaints, _("Invalid symbol offset")); |
c906108c SS |
1690 | symbol->n_value = 0; |
1691 | symbol->n_scnum = -1; | |
1692 | return; | |
1693 | } | |
5c80ed9d | 1694 | bfd_coff_swap_sym_in (this_symtab_objfile->obfd, |
c5aa993b | 1695 | stbl + (symno * local_symesz), |
c906108c SS |
1696 | symbol); |
1697 | } | |
c5aa993b | 1698 | |
c906108c SS |
1699 | /* Get value corresponding to symbol number symno in symtbl. */ |
1700 | ||
470d5666 | 1701 | static CORE_ADDR |
fba45db2 | 1702 | read_symbol_nvalue (int symno) |
c906108c SS |
1703 | { |
1704 | struct internal_syment symbol[1]; | |
1705 | ||
1706 | read_symbol (symbol, symno); | |
c5aa993b | 1707 | return symbol->n_value; |
c906108c SS |
1708 | } |
1709 | ||
1710 | ||
1711 | /* Find the address of the function corresponding to symno, where | |
1712 | symno is the symbol pointed to by the linetable. */ | |
1713 | ||
1714 | static int | |
fba45db2 | 1715 | read_symbol_lineno (int symno) |
c906108c | 1716 | { |
5c80ed9d | 1717 | struct objfile *objfile = this_symtab_objfile; |
7af35dad | 1718 | int xcoff64 = bfd_xcoff_is_xcoff64 (objfile->obfd); |
7a78ae4e | 1719 | |
b8b98ad1 | 1720 | struct coff_symfile_info *info = XCOFF_DATA (objfile); |
7a78ae4e ND |
1721 | int nsyms = info->symtbl_num_syms; |
1722 | char *stbl = info->symtbl; | |
1723 | char *strtbl = info->strtbl; | |
1724 | ||
c906108c SS |
1725 | struct internal_syment symbol[1]; |
1726 | union internal_auxent main_aux[1]; | |
1727 | ||
1728 | if (symno < 0) | |
1729 | { | |
23136709 | 1730 | bf_notfound_complaint (); |
c906108c SS |
1731 | return 0; |
1732 | } | |
1733 | ||
1734 | /* Note that just searching for a short distance (e.g. 50 symbols) | |
1735 | is not enough, at least in the following case. | |
1736 | ||
1737 | .extern foo | |
1738 | [many .stabx entries] | |
1739 | [a few functions, referring to foo] | |
1740 | .globl foo | |
1741 | .bf | |
1742 | ||
1743 | What happens here is that the assembler moves the .stabx entries | |
1744 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1745 | all the stabx entries. See PR gdb/2222. */ | |
1746 | ||
1747 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1748 | If I understand things correctly it would need to be done only for | |
1749 | the duration of a single psymtab to symtab conversion. */ | |
1750 | while (symno < nsyms) | |
1751 | { | |
1752 | bfd_coff_swap_sym_in (symfile_bfd, | |
1753 | stbl + (symno * local_symesz), symbol); | |
7a78ae4e ND |
1754 | if (symbol->n_sclass == C_FCN) |
1755 | { | |
1756 | char *name = xcoff64 ? strtbl + symbol->n_offset : symbol->n_name; | |
a109c7c1 | 1757 | |
7ecb6532 | 1758 | if (strcmp (name, ".bf") == 0) |
7a78ae4e ND |
1759 | goto gotit; |
1760 | } | |
c906108c SS |
1761 | symno += symbol->n_numaux + 1; |
1762 | } | |
1763 | ||
23136709 | 1764 | bf_notfound_complaint (); |
c906108c SS |
1765 | return 0; |
1766 | ||
1767 | gotit: | |
581e13c1 | 1768 | /* Take aux entry and return its lineno. */ |
c906108c | 1769 | symno++; |
7a78ae4e | 1770 | bfd_coff_swap_aux_in (objfile->obfd, stbl + symno * local_symesz, |
c906108c SS |
1771 | symbol->n_type, symbol->n_sclass, |
1772 | 0, symbol->n_numaux, main_aux); | |
1773 | ||
1774 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1775 | } | |
1776 | ||
581e13c1 | 1777 | /* Support for line number handling. */ |
c906108c SS |
1778 | |
1779 | /* This function is called for every section; it finds the outer limits | |
1780 | * of the line table (minimum and maximum file offset) so that the | |
1781 | * mainline code can read the whole thing for efficiency. | |
1782 | */ | |
1783 | static void | |
7be0c536 | 1784 | find_linenos (struct bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
1785 | { |
1786 | struct coff_symfile_info *info; | |
1787 | int size, count; | |
1788 | file_ptr offset, maxoff; | |
1789 | ||
1790 | count = asect->lineno_count; | |
1791 | ||
7ecb6532 | 1792 | if (strcmp (asect->name, ".text") != 0 || count == 0) |
c906108c SS |
1793 | return; |
1794 | ||
1795 | size = count * coff_data (abfd)->local_linesz; | |
c5aa993b | 1796 | info = (struct coff_symfile_info *) vpinfo; |
c906108c SS |
1797 | offset = asect->line_filepos; |
1798 | maxoff = offset + size; | |
1799 | ||
1800 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1801 | info->min_lineno_offset = offset; | |
1802 | ||
1803 | if (maxoff > info->max_lineno_offset) | |
1804 | info->max_lineno_offset = maxoff; | |
1805 | } | |
1806 | \f | |
c906108c | 1807 | static void |
5c80ed9d | 1808 | xcoff_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst) |
c906108c SS |
1809 | { |
1810 | struct cleanup *old_chain; | |
1811 | int i; | |
c5aa993b | 1812 | |
c906108c SS |
1813 | if (!pst) |
1814 | return; | |
1815 | ||
1816 | if (pst->readin) | |
1817 | { | |
1818 | fprintf_unfiltered | |
1819 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1820 | pst->filename); | |
1821 | return; | |
1822 | } | |
1823 | ||
581e13c1 | 1824 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
1825 | for (i = 0; i < pst->number_of_dependencies; i++) |
1826 | if (!pst->dependencies[i]->readin) | |
1827 | { | |
1828 | /* Inform about additional files that need to be read in. */ | |
1829 | if (info_verbose) | |
1830 | { | |
1831 | fputs_filtered (" ", gdb_stdout); | |
1832 | wrap_here (""); | |
1833 | fputs_filtered ("and ", gdb_stdout); | |
1834 | wrap_here (""); | |
1835 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1836 | wrap_here (""); /* Flush output */ |
c906108c SS |
1837 | gdb_flush (gdb_stdout); |
1838 | } | |
5c80ed9d | 1839 | xcoff_psymtab_to_symtab_1 (objfile, pst->dependencies[i]); |
c906108c SS |
1840 | } |
1841 | ||
c5aa993b | 1842 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0) |
c906108c SS |
1843 | { |
1844 | /* Init stuff necessary for reading in symbols. */ | |
1845 | stabsread_init (); | |
1846 | buildsym_init (); | |
a0b3c4fd | 1847 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c | 1848 | |
5c80ed9d | 1849 | read_xcoff_symtab (objfile, pst); |
c906108c SS |
1850 | |
1851 | do_cleanups (old_chain); | |
1852 | } | |
1853 | ||
1854 | pst->readin = 1; | |
1855 | } | |
1856 | ||
c906108c | 1857 | /* Read in all of the symbols for a given psymtab for real. |
442e4d9c | 1858 | Be verbose about it if the user wants that. PST is not NULL. */ |
c906108c SS |
1859 | |
1860 | static void | |
5c80ed9d | 1861 | xcoff_psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 1862 | { |
c906108c SS |
1863 | if (pst->readin) |
1864 | { | |
1865 | fprintf_unfiltered | |
1866 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1867 | pst->filename); | |
1868 | return; | |
1869 | } | |
1870 | ||
c5aa993b | 1871 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0 |
c906108c SS |
1872 | || pst->number_of_dependencies) |
1873 | { | |
1874 | /* Print the message now, before reading the string table, | |
c5aa993b | 1875 | to avoid disconcerting pauses. */ |
c906108c SS |
1876 | if (info_verbose) |
1877 | { | |
1878 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1879 | gdb_flush (gdb_stdout); | |
1880 | } | |
1881 | ||
c906108c SS |
1882 | next_symbol_text_func = xcoff_next_symbol_text; |
1883 | ||
5c80ed9d | 1884 | xcoff_psymtab_to_symtab_1 (objfile, pst); |
c906108c SS |
1885 | |
1886 | /* Match with global symbols. This only needs to be done once, | |
1887 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 1888 | scan_file_globals (objfile); |
c906108c SS |
1889 | |
1890 | /* Finish up the debug error message. */ | |
1891 | if (info_verbose) | |
1892 | printf_filtered ("done.\n"); | |
1893 | } | |
1894 | } | |
1895 | \f | |
1896 | static void | |
fba45db2 | 1897 | xcoff_new_init (struct objfile *objfile) |
c906108c SS |
1898 | { |
1899 | stabsread_new_init (); | |
1900 | buildsym_new_init (); | |
1901 | } | |
1902 | ||
1903 | /* Do initialization in preparation for reading symbols from OBJFILE. | |
c5aa993b | 1904 | |
c906108c SS |
1905 | We will only be called if this is an XCOFF or XCOFF-like file. |
1906 | BFD handles figuring out the format of the file, and code in symfile.c | |
1907 | uses BFD's determination to vector to us. */ | |
1908 | ||
1909 | static void | |
fba45db2 | 1910 | xcoff_symfile_init (struct objfile *objfile) |
c906108c | 1911 | { |
b8b98ad1 TT |
1912 | struct coff_symfile_info *xcoff; |
1913 | ||
581e13c1 | 1914 | /* Allocate struct to keep track of the symfile. */ |
b8b98ad1 TT |
1915 | xcoff = XNEW (struct coff_symfile_info); |
1916 | set_objfile_data (objfile, xcoff_objfile_data_key, xcoff); | |
c906108c SS |
1917 | |
1918 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1919 | find this causes a significant slowdown in gdb then we could | |
1920 | set it in the debug symbol readers only when necessary. */ | |
1921 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
1922 | } |
1923 | ||
1924 | /* Perform any local cleanups required when we are done with a particular | |
1925 | objfile. I.E, we are in the process of discarding all symbol information | |
1926 | for an objfile, freeing up all memory held for it, and unlinking the | |
581e13c1 | 1927 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
1928 | |
1929 | static void | |
fba45db2 | 1930 | xcoff_symfile_finish (struct objfile *objfile) |
c906108c | 1931 | { |
c906108c SS |
1932 | /* Start with a fresh include table for the next objfile. */ |
1933 | if (inclTable) | |
1934 | { | |
b8c9b27d | 1935 | xfree (inclTable); |
c906108c SS |
1936 | inclTable = NULL; |
1937 | } | |
1938 | inclIndx = inclLength = inclDepth = 0; | |
316a8b21 TG |
1939 | |
1940 | dwarf2_free_objfile (objfile); | |
c906108c SS |
1941 | } |
1942 | ||
1943 | ||
1944 | static void | |
fba45db2 | 1945 | init_stringtab (bfd *abfd, file_ptr offset, struct objfile *objfile) |
c906108c SS |
1946 | { |
1947 | long length; | |
1948 | int val; | |
1949 | unsigned char lengthbuf[4]; | |
1950 | char *strtbl; | |
b8b98ad1 | 1951 | struct coff_symfile_info *xcoff = XCOFF_DATA (objfile); |
c906108c | 1952 | |
b8b98ad1 | 1953 | xcoff->strtbl = NULL; |
c906108c SS |
1954 | |
1955 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) | |
8a3fe4f8 | 1956 | error (_("cannot seek to string table in %s: %s"), |
c906108c SS |
1957 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1958 | ||
3a42e9d0 | 1959 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c SS |
1960 | length = bfd_h_get_32 (abfd, lengthbuf); |
1961 | ||
1962 | /* If no string table is needed, then the file may end immediately | |
1963 | after the symbols. Just return with `strtbl' set to NULL. */ | |
1964 | ||
1965 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1966 | return; | |
1967 | ||
581e13c1 MS |
1968 | /* Allocate string table from objfile_obstack. We will need this table |
1969 | as long as we have its symbol table around. */ | |
c906108c | 1970 | |
4a146b47 | 1971 | strtbl = (char *) obstack_alloc (&objfile->objfile_obstack, length); |
b8b98ad1 | 1972 | xcoff->strtbl = strtbl; |
c906108c SS |
1973 | |
1974 | /* Copy length buffer, the first byte is usually zero and is | |
1975 | used for stabs with a name length of zero. */ | |
1976 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
1977 | if (length == sizeof lengthbuf) | |
1978 | return; | |
1979 | ||
3a42e9d0 | 1980 | val = bfd_bread (strtbl + sizeof lengthbuf, length - sizeof lengthbuf, abfd); |
c906108c SS |
1981 | |
1982 | if (val != length - sizeof lengthbuf) | |
8a3fe4f8 | 1983 | error (_("cannot read string table from %s: %s"), |
c906108c SS |
1984 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1985 | if (strtbl[length - 1] != '\0') | |
3e43a32a MS |
1986 | error (_("bad symbol file: string table " |
1987 | "does not end with null character")); | |
c906108c SS |
1988 | |
1989 | return; | |
1990 | } | |
1991 | \f | |
1992 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
1993 | have seen one, it is the offset in the line numbers of the line numbers | |
1994 | for the psymtab. */ | |
1995 | static unsigned int first_fun_line_offset; | |
1996 | ||
c906108c SS |
1997 | /* Allocate and partially fill a partial symtab. It will be |
1998 | completely filled at the end of the symbol list. | |
1999 | ||
2000 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2001 | is the address relative to which its symbols are (incremental) or 0 | |
581e13c1 | 2002 | (normal). */ |
c906108c SS |
2003 | |
2004 | static struct partial_symtab * | |
0d5cff50 DE |
2005 | xcoff_start_psymtab (struct objfile *objfile, |
2006 | const char *filename, int first_symnum, | |
fba45db2 KB |
2007 | struct partial_symbol **global_syms, |
2008 | struct partial_symbol **static_syms) | |
c906108c SS |
2009 | { |
2010 | struct partial_symtab *result = | |
a109c7c1 MS |
2011 | start_psymtab_common (objfile, objfile->section_offsets, |
2012 | filename, | |
2013 | /* We fill in textlow later. */ | |
2014 | 0, | |
2015 | global_syms, static_syms); | |
c906108c | 2016 | |
e38df1d0 TT |
2017 | result->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2018 | sizeof (struct symloc)); | |
c5aa993b | 2019 | ((struct symloc *) result->read_symtab_private)->first_symnum = first_symnum; |
c906108c SS |
2020 | result->read_symtab = xcoff_psymtab_to_symtab; |
2021 | ||
581e13c1 | 2022 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
2023 | psymtab_language = deduce_language_from_filename (filename); |
2024 | ||
2025 | return result; | |
2026 | } | |
2027 | ||
581e13c1 | 2028 | /* Close off the current usage of PST. |
c906108c SS |
2029 | Returns PST, or NULL if the partial symtab was empty and thrown away. |
2030 | ||
2031 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). | |
2032 | ||
2033 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES | |
2034 | are the information for includes and dependencies. */ | |
2035 | ||
2036 | static struct partial_symtab * | |
5c80ed9d TT |
2037 | xcoff_end_psymtab (struct objfile *objfile, struct partial_symtab *pst, |
2038 | const char **include_list, int num_includes, | |
2039 | int capping_symbol_number, | |
fba45db2 KB |
2040 | struct partial_symtab **dependency_list, |
2041 | int number_dependencies, int textlow_not_set) | |
c906108c SS |
2042 | { |
2043 | int i; | |
c906108c SS |
2044 | |
2045 | if (capping_symbol_number != -1) | |
c5aa993b | 2046 | ((struct symloc *) pst->read_symtab_private)->numsyms = |
c906108c | 2047 | capping_symbol_number |
c5aa993b JM |
2048 | - ((struct symloc *) pst->read_symtab_private)->first_symnum; |
2049 | ((struct symloc *) pst->read_symtab_private)->lineno_off = | |
c906108c SS |
2050 | first_fun_line_offset; |
2051 | first_fun_line_offset = 0; | |
3e43a32a MS |
2052 | pst->n_global_syms = objfile->global_psymbols.next |
2053 | - (objfile->global_psymbols.list + pst->globals_offset); | |
2054 | pst->n_static_syms = objfile->static_psymbols.next | |
2055 | - (objfile->static_psymbols.list + pst->statics_offset); | |
c906108c SS |
2056 | |
2057 | pst->number_of_dependencies = number_dependencies; | |
2058 | if (number_dependencies) | |
2059 | { | |
2060 | pst->dependencies = (struct partial_symtab **) | |
8b92e4d5 | 2061 | obstack_alloc (&objfile->objfile_obstack, |
c5aa993b | 2062 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c | 2063 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2064 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2065 | } |
2066 | else | |
2067 | pst->dependencies = 0; | |
2068 | ||
2069 | for (i = 0; i < num_includes; i++) | |
2070 | { | |
2071 | struct partial_symtab *subpst = | |
a109c7c1 | 2072 | allocate_psymtab (include_list[i], objfile); |
c906108c SS |
2073 | |
2074 | subpst->section_offsets = pst->section_offsets; | |
e38df1d0 TT |
2075 | subpst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2076 | sizeof (struct symloc)); | |
c5aa993b JM |
2077 | ((struct symloc *) subpst->read_symtab_private)->first_symnum = 0; |
2078 | ((struct symloc *) subpst->read_symtab_private)->numsyms = 0; | |
c906108c SS |
2079 | subpst->textlow = 0; |
2080 | subpst->texthigh = 0; | |
2081 | ||
2082 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2083 | shared by the entire set of include files. FIXME-someday. */ |
c906108c | 2084 | subpst->dependencies = (struct partial_symtab **) |
8b92e4d5 | 2085 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2086 | sizeof (struct partial_symtab *)); |
2087 | subpst->dependencies[0] = pst; | |
2088 | subpst->number_of_dependencies = 1; | |
2089 | ||
2090 | subpst->globals_offset = | |
2091 | subpst->n_global_syms = | |
c5aa993b JM |
2092 | subpst->statics_offset = |
2093 | subpst->n_static_syms = 0; | |
c906108c SS |
2094 | |
2095 | subpst->readin = 0; | |
2096 | subpst->symtab = 0; | |
2097 | subpst->read_symtab = pst->read_symtab; | |
2098 | } | |
2099 | ||
5c80ed9d | 2100 | sort_pst_symbols (objfile, pst); |
c906108c | 2101 | |
c906108c SS |
2102 | if (num_includes == 0 |
2103 | && number_dependencies == 0 | |
2104 | && pst->n_global_syms == 0 | |
2105 | && pst->n_static_syms == 0) | |
2106 | { | |
2107 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2108 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2109 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b | 2110 | any symbols in them. There can be a lot of them. */ |
c906108c | 2111 | |
5c80ed9d | 2112 | discard_psymtab (objfile, pst); |
c906108c SS |
2113 | |
2114 | /* Indicate that psymtab was thrown away. */ | |
c5aa993b | 2115 | pst = (struct partial_symtab *) NULL; |
c906108c SS |
2116 | } |
2117 | return pst; | |
2118 | } | |
2119 | ||
c906108c SS |
2120 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in |
2121 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2122 | the symbol and its auxents. */ | |
2123 | ||
2124 | static void | |
fba45db2 | 2125 | swap_sym (struct internal_syment *symbol, union internal_auxent *aux, |
0d5cff50 | 2126 | const char **name, char **raw, unsigned int *symnump, |
fba45db2 | 2127 | struct objfile *objfile) |
c906108c SS |
2128 | { |
2129 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2130 | if (symbol->n_zeroes) | |
2131 | { | |
2132 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
c5aa993b | 2133 | '\0'-terminated. */ |
c906108c SS |
2134 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') |
2135 | { | |
2136 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2137 | into the minimal symbols. */ | |
2138 | char *p; | |
a109c7c1 | 2139 | |
8b92e4d5 | 2140 | p = obstack_alloc (&objfile->objfile_obstack, E_SYMNMLEN + 1); |
c906108c SS |
2141 | strncpy (p, symbol->n_name, E_SYMNMLEN); |
2142 | p[E_SYMNMLEN] = '\0'; | |
2143 | *name = p; | |
2144 | } | |
2145 | else | |
2146 | /* Point to the unswapped name as that persists as long as the | |
2147 | objfile does. */ | |
c5aa993b | 2148 | *name = ((struct external_syment *) *raw)->e.e_name; |
c906108c SS |
2149 | } |
2150 | else if (symbol->n_sclass & 0x80) | |
2151 | { | |
b8b98ad1 | 2152 | *name = XCOFF_DATA (objfile)->debugsec + symbol->n_offset; |
c906108c SS |
2153 | } |
2154 | else | |
2155 | { | |
b8b98ad1 | 2156 | *name = XCOFF_DATA (objfile)->strtbl + symbol->n_offset; |
c906108c SS |
2157 | } |
2158 | ++*symnump; | |
2159 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2160 | if (symbol->n_numaux > 0) | |
2161 | { | |
2162 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2163 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2164 | ||
2165 | *symnump += symbol->n_numaux; | |
2166 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2167 | } | |
2168 | } | |
2169 | ||
23136709 KB |
2170 | static void |
2171 | function_outside_compilation_unit_complaint (const char *arg1) | |
2172 | { | |
2173 | complaint (&symfile_complaints, | |
3e43a32a MS |
2174 | _("function `%s' appears to be defined " |
2175 | "outside of all compilation units"), | |
23136709 KB |
2176 | arg1); |
2177 | } | |
2178 | ||
c906108c | 2179 | static void |
fba45db2 | 2180 | scan_xcoff_symtab (struct objfile *objfile) |
c906108c | 2181 | { |
40c58d95 | 2182 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
581e13c1 | 2183 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
0d5cff50 | 2184 | const char *filestring = NULL; |
c906108c | 2185 | |
0d5cff50 | 2186 | const char *namestring; |
c906108c SS |
2187 | int past_first_source_file = 0; |
2188 | bfd *abfd; | |
2189 | asection *bfd_sect; | |
2190 | unsigned int nsyms; | |
2191 | ||
2192 | /* Current partial symtab */ | |
2193 | struct partial_symtab *pst; | |
2194 | ||
581e13c1 | 2195 | /* List of current psymtab's include files. */ |
0d5cff50 | 2196 | const char **psymtab_include_list; |
c906108c SS |
2197 | int includes_allocated; |
2198 | int includes_used; | |
2199 | ||
581e13c1 | 2200 | /* Index within current psymtab dependency list. */ |
c906108c SS |
2201 | struct partial_symtab **dependency_list; |
2202 | int dependencies_used, dependencies_allocated; | |
2203 | ||
2204 | char *sraw_symbol; | |
2205 | struct internal_syment symbol; | |
96baa820 | 2206 | union internal_auxent main_aux[5]; |
c906108c SS |
2207 | unsigned int ssymnum; |
2208 | ||
0d5cff50 | 2209 | const char *last_csect_name = NULL; /* Last seen csect's name and value. */ |
c906108c SS |
2210 | CORE_ADDR last_csect_val = 0; |
2211 | int last_csect_sec = 0; | |
581e13c1 | 2212 | int misc_func_recorded = 0; /* true if any misc. function. */ |
c906108c SS |
2213 | int textlow_not_set = 1; |
2214 | ||
2215 | pst = (struct partial_symtab *) 0; | |
2216 | ||
2217 | includes_allocated = 30; | |
2218 | includes_used = 0; | |
0d5cff50 DE |
2219 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2220 | sizeof (const char *)); | |
c906108c SS |
2221 | |
2222 | dependencies_allocated = 30; | |
2223 | dependencies_used = 0; | |
2224 | dependency_list = | |
2225 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2226 | sizeof (struct partial_symtab *)); | |
2227 | ||
2228 | last_source_file = NULL; | |
2229 | ||
2230 | abfd = objfile->obfd; | |
13c763f4 | 2231 | next_symbol_text_func = xcoff_next_symbol_text; |
c906108c | 2232 | |
b8b98ad1 TT |
2233 | sraw_symbol = XCOFF_DATA (objfile)->symtbl; |
2234 | nsyms = XCOFF_DATA (objfile)->symtbl_num_syms; | |
c906108c SS |
2235 | ssymnum = 0; |
2236 | while (ssymnum < nsyms) | |
2237 | { | |
7a78ae4e | 2238 | int sclass; |
c906108c SS |
2239 | |
2240 | QUIT; | |
2241 | ||
7a78ae4e ND |
2242 | bfd_coff_swap_sym_in (abfd, sraw_symbol, &symbol); |
2243 | sclass = symbol.n_sclass; | |
2244 | ||
c906108c SS |
2245 | switch (sclass) |
2246 | { | |
2247 | case C_EXT: | |
2248 | case C_HIDEXT: | |
2249 | { | |
2250 | /* The CSECT auxent--always the last auxent. */ | |
2251 | union internal_auxent csect_aux; | |
2252 | unsigned int symnum_before = ssymnum; | |
2253 | ||
96baa820 | 2254 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2255 | &ssymnum, objfile); |
2256 | if (symbol.n_numaux > 1) | |
2257 | { | |
2258 | bfd_coff_swap_aux_in | |
2259 | (objfile->obfd, | |
c5aa993b | 2260 | sraw_symbol - coff_data (abfd)->local_symesz, |
c906108c SS |
2261 | symbol.n_type, |
2262 | symbol.n_sclass, | |
2263 | symbol.n_numaux - 1, | |
2264 | symbol.n_numaux, | |
2265 | &csect_aux); | |
2266 | } | |
2267 | else | |
96baa820 | 2268 | csect_aux = main_aux[0]; |
c906108c | 2269 | |
977adac5 ND |
2270 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2271 | if (namestring[0] == '$' | |
c906108c SS |
2272 | || (namestring[0] == '.' && namestring[1] == '$')) |
2273 | break; | |
2274 | ||
2275 | switch (csect_aux.x_csect.x_smtyp & 0x7) | |
2276 | { | |
2277 | case XTY_SD: | |
2278 | switch (csect_aux.x_csect.x_smclas) | |
2279 | { | |
2280 | case XMC_PR: | |
2281 | if (last_csect_name) | |
2282 | { | |
2283 | /* If no misc. function recorded in the last | |
581e13c1 | 2284 | seen csect, enter it as a function. This |
c906108c SS |
2285 | will take care of functions like strcmp() |
2286 | compiled by xlc. */ | |
2287 | ||
2288 | if (!misc_func_recorded) | |
2289 | { | |
ec92004f | 2290 | record_minimal_symbol |
c906108c | 2291 | (last_csect_name, last_csect_val, |
ec92004f JB |
2292 | mst_text, last_csect_sec, objfile); |
2293 | misc_func_recorded = 1; | |
c906108c SS |
2294 | } |
2295 | ||
2296 | if (pst != NULL) | |
2297 | { | |
2298 | /* We have to allocate one psymtab for | |
2299 | each program csect, because their text | |
2300 | sections need not be adjacent. */ | |
2301 | xcoff_end_psymtab | |
5c80ed9d TT |
2302 | (objfile, pst, psymtab_include_list, |
2303 | includes_used, symnum_before, dependency_list, | |
c906108c SS |
2304 | dependencies_used, textlow_not_set); |
2305 | includes_used = 0; | |
2306 | dependencies_used = 0; | |
2307 | /* Give all psymtabs for this source file the same | |
2308 | name. */ | |
2309 | pst = xcoff_start_psymtab | |
d4f3574e | 2310 | (objfile, |
c906108c SS |
2311 | filestring, |
2312 | symnum_before, | |
2313 | objfile->global_psymbols.next, | |
2314 | objfile->static_psymbols.next); | |
2315 | } | |
2316 | } | |
977adac5 ND |
2317 | /* Activate the misc_func_recorded mechanism for |
2318 | compiler- and linker-generated CSECTs like ".strcmp" | |
2319 | and "@FIX1". */ | |
2320 | if (namestring && (namestring[0] == '.' | |
2321 | || namestring[0] == '@')) | |
c906108c SS |
2322 | { |
2323 | last_csect_name = namestring; | |
2324 | last_csect_val = symbol.n_value; | |
ec92004f | 2325 | last_csect_sec = symbol.n_scnum; |
c906108c SS |
2326 | } |
2327 | if (pst != NULL) | |
2328 | { | |
2329 | CORE_ADDR highval = | |
a109c7c1 MS |
2330 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; |
2331 | ||
c906108c SS |
2332 | if (highval > pst->texthigh) |
2333 | pst->texthigh = highval; | |
2334 | if (pst->textlow == 0 || symbol.n_value < pst->textlow) | |
2335 | pst->textlow = symbol.n_value; | |
2336 | } | |
2337 | misc_func_recorded = 0; | |
2338 | break; | |
2339 | ||
2340 | case XMC_RW: | |
6904b546 | 2341 | case XMC_TD: |
c906108c SS |
2342 | /* Data variables are recorded in the minimal symbol |
2343 | table, except for section symbols. */ | |
2344 | if (*namestring != '.') | |
2345 | prim_record_minimal_symbol_and_info | |
2346 | (namestring, symbol.n_value, | |
2347 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
b887350f | 2348 | secnum_to_section (symbol.n_scnum, objfile), |
ec92004f JB |
2349 | secnum_to_bfd_section (symbol.n_scnum, objfile), |
2350 | objfile); | |
c906108c SS |
2351 | break; |
2352 | ||
2353 | case XMC_TC0: | |
2354 | if (toc_offset) | |
8a3fe4f8 | 2355 | warning (_("More than one XMC_TC0 symbol found.")); |
c906108c SS |
2356 | toc_offset = symbol.n_value; |
2357 | ||
3e43a32a MS |
2358 | /* Make TOC offset relative to start address of |
2359 | section. */ | |
c906108c SS |
2360 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); |
2361 | if (bfd_sect) | |
2362 | toc_offset -= bfd_section_vma (objfile->obfd, bfd_sect); | |
2363 | break; | |
2364 | ||
2365 | case XMC_TC: | |
2366 | /* These symbols tell us where the TOC entry for a | |
2367 | variable is, not the variable itself. */ | |
2368 | break; | |
2369 | ||
2370 | default: | |
2371 | break; | |
2372 | } | |
2373 | break; | |
2374 | ||
2375 | case XTY_LD: | |
2376 | switch (csect_aux.x_csect.x_smclas) | |
2377 | { | |
2378 | case XMC_PR: | |
2379 | /* A function entry point. */ | |
2380 | ||
2381 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2382 | first_fun_line_offset = | |
96baa820 | 2383 | main_aux[0].x_sym.x_fcnary.x_fcn.x_lnnoptr; |
ec92004f JB |
2384 | { |
2385 | record_minimal_symbol | |
2386 | (namestring, symbol.n_value, | |
2387 | sclass == C_HIDEXT ? mst_file_text : mst_text, | |
2388 | symbol.n_scnum, objfile); | |
2389 | misc_func_recorded = 1; | |
2390 | } | |
c906108c SS |
2391 | break; |
2392 | ||
2393 | case XMC_GL: | |
2394 | /* shared library function trampoline code entry | |
581e13c1 | 2395 | point. */ |
c906108c SS |
2396 | |
2397 | /* record trampoline code entries as | |
2398 | mst_solib_trampoline symbol. When we lookup mst | |
2399 | symbols, we will choose mst_text over | |
581e13c1 | 2400 | mst_solib_trampoline. */ |
ec92004f | 2401 | record_minimal_symbol |
c906108c | 2402 | (namestring, symbol.n_value, |
ec92004f JB |
2403 | mst_solib_trampoline, symbol.n_scnum, objfile); |
2404 | misc_func_recorded = 1; | |
c906108c SS |
2405 | break; |
2406 | ||
2407 | case XMC_DS: | |
2408 | /* The symbols often have the same names as | |
2409 | debug symbols for functions, and confuse | |
2410 | lookup_symbol. */ | |
2411 | break; | |
2412 | ||
2413 | default: | |
2414 | ||
2415 | /* xlc puts each variable in a separate csect, | |
2416 | so we get an XTY_SD for each variable. But | |
2417 | gcc puts several variables in a csect, so | |
2418 | that each variable only gets an XTY_LD. We | |
2419 | still need to record them. This will | |
2420 | typically be XMC_RW; I suspect XMC_RO and | |
2421 | XMC_BS might be possible too. */ | |
2422 | if (*namestring != '.') | |
2423 | prim_record_minimal_symbol_and_info | |
2424 | (namestring, symbol.n_value, | |
2425 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
b887350f | 2426 | secnum_to_section (symbol.n_scnum, objfile), |
ec92004f JB |
2427 | secnum_to_bfd_section (symbol.n_scnum, objfile), |
2428 | objfile); | |
c906108c SS |
2429 | break; |
2430 | } | |
2431 | break; | |
2432 | ||
2433 | case XTY_CM: | |
2434 | switch (csect_aux.x_csect.x_smclas) | |
2435 | { | |
2436 | case XMC_RW: | |
2437 | case XMC_BS: | |
2438 | /* Common variables are recorded in the minimal symbol | |
2439 | table, except for section symbols. */ | |
2440 | if (*namestring != '.') | |
2441 | prim_record_minimal_symbol_and_info | |
2442 | (namestring, symbol.n_value, | |
2443 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, | |
b887350f | 2444 | secnum_to_section (symbol.n_scnum, objfile), |
ec92004f JB |
2445 | secnum_to_bfd_section (symbol.n_scnum, objfile), |
2446 | objfile); | |
c906108c SS |
2447 | break; |
2448 | } | |
2449 | break; | |
2450 | ||
2451 | default: | |
2452 | break; | |
2453 | } | |
2454 | } | |
2455 | break; | |
2456 | case C_FILE: | |
2457 | { | |
2458 | unsigned int symnum_before; | |
2459 | ||
2460 | symnum_before = ssymnum; | |
96baa820 | 2461 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2462 | &ssymnum, objfile); |
2463 | ||
2464 | /* See if the last csect needs to be recorded. */ | |
2465 | ||
2466 | if (last_csect_name && !misc_func_recorded) | |
2467 | { | |
c906108c SS |
2468 | /* If no misc. function recorded in the last seen csect, enter |
2469 | it as a function. This will take care of functions like | |
2470 | strcmp() compiled by xlc. */ | |
2471 | ||
ec92004f JB |
2472 | record_minimal_symbol (last_csect_name, last_csect_val, |
2473 | mst_text, last_csect_sec, objfile); | |
2474 | misc_func_recorded = 1; | |
c906108c SS |
2475 | } |
2476 | ||
2477 | if (pst) | |
2478 | { | |
5c80ed9d TT |
2479 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, |
2480 | includes_used, symnum_before, | |
2481 | dependency_list, dependencies_used, | |
2482 | textlow_not_set); | |
c906108c SS |
2483 | includes_used = 0; |
2484 | dependencies_used = 0; | |
2485 | } | |
2486 | first_fun_line_offset = 0; | |
2487 | ||
2488 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2489 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2490 | do things the standard COFF way and put it in the auxent. | |
2491 | We use the auxent if the symbol is ".file" and an auxent | |
2492 | exists, otherwise use the symbol itself. */ | |
2493 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2494 | { | |
96baa820 | 2495 | filestring = coff_getfilename (&main_aux[0], objfile); |
c906108c SS |
2496 | } |
2497 | else | |
2498 | filestring = namestring; | |
2499 | ||
d4f3574e | 2500 | pst = xcoff_start_psymtab (objfile, |
c906108c SS |
2501 | filestring, |
2502 | symnum_before, | |
2503 | objfile->global_psymbols.next, | |
2504 | objfile->static_psymbols.next); | |
2505 | last_csect_name = NULL; | |
2506 | } | |
2507 | break; | |
2508 | ||
2509 | default: | |
2510 | { | |
23136709 | 2511 | complaint (&symfile_complaints, |
3e43a32a MS |
2512 | _("Storage class %d not recognized during scan"), |
2513 | sclass); | |
c906108c SS |
2514 | } |
2515 | /* FALLTHROUGH */ | |
2516 | ||
2517 | /* C_FCN is .bf and .ef symbols. I think it is sufficient | |
2518 | to handle only the C_FUN and C_EXT. */ | |
2519 | case C_FCN: | |
2520 | ||
2521 | case C_BSTAT: | |
2522 | case C_ESTAT: | |
2523 | case C_ARG: | |
2524 | case C_REGPARM: | |
2525 | case C_REG: | |
2526 | case C_TPDEF: | |
2527 | case C_STRTAG: | |
2528 | case C_UNTAG: | |
2529 | case C_ENTAG: | |
2530 | case C_LABEL: | |
2531 | case C_NULL: | |
2532 | ||
2533 | /* C_EINCL means we are switching back to the main file. But there | |
2534 | is no reason to care; the only thing we want to know about | |
2535 | includes is the names of all the included (.h) files. */ | |
2536 | case C_EINCL: | |
2537 | ||
2538 | case C_BLOCK: | |
2539 | ||
2540 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2541 | used instead. */ | |
2542 | case C_STAT: | |
2543 | ||
2544 | /* I don't think the name of the common block (as opposed to the | |
2545 | variables within it) is something which is user visible | |
2546 | currently. */ | |
2547 | case C_BCOMM: | |
2548 | case C_ECOMM: | |
2549 | ||
2550 | case C_PSYM: | |
2551 | case C_RPSYM: | |
2552 | ||
2553 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2554 | so C_LSYM would appear to be only for locals. */ | |
2555 | case C_LSYM: | |
2556 | ||
2557 | case C_AUTO: | |
2558 | case C_RSYM: | |
2559 | { | |
2560 | /* We probably could save a few instructions by assuming that | |
2561 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
7a78ae4e | 2562 | int naux1 = symbol.n_numaux + 1; |
a109c7c1 | 2563 | |
c906108c | 2564 | ssymnum += naux1; |
7a78ae4e | 2565 | sraw_symbol += bfd_coff_symesz (abfd) * naux1; |
c906108c SS |
2566 | } |
2567 | break; | |
2568 | ||
2569 | case C_BINCL: | |
d5d0a62f | 2570 | { |
581e13c1 | 2571 | /* Mark down an include file in the current psymtab. */ |
d5d0a62f | 2572 | enum language tmp_language; |
a109c7c1 | 2573 | |
d5d0a62f EZ |
2574 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2575 | &ssymnum, objfile); | |
2576 | ||
2577 | tmp_language = deduce_language_from_filename (namestring); | |
2578 | ||
2579 | /* Only change the psymtab's language if we've learned | |
2580 | something useful (eg. tmp_language is not language_unknown). | |
2581 | In addition, to match what start_subfile does, never change | |
2582 | from C++ to C. */ | |
2583 | if (tmp_language != language_unknown | |
2584 | && (tmp_language != language_c | |
2585 | || psymtab_language != language_cplus)) | |
2586 | psymtab_language = tmp_language; | |
2587 | ||
2588 | /* In C++, one may expect the same filename to come round many | |
2589 | times, when code is coming alternately from the main file | |
581e13c1 | 2590 | and from inline functions in other files. So I check to see |
d5d0a62f EZ |
2591 | if this is a file we've seen before -- either the main |
2592 | source file, or a previously included file. | |
2593 | ||
2594 | This seems to be a lot of time to be spending on N_SOL, but | |
2595 | things like "break c-exp.y:435" need to work (I | |
2596 | suppose the psymtab_include_list could be hashed or put | |
2597 | in a binary tree, if profiling shows this is a major hog). */ | |
7ecb6532 | 2598 | if (pst && strcmp (namestring, pst->filename) == 0) |
d5d0a62f | 2599 | continue; |
a109c7c1 | 2600 | |
d5d0a62f | 2601 | { |
aa1ee363 | 2602 | int i; |
a109c7c1 | 2603 | |
d5d0a62f | 2604 | for (i = 0; i < includes_used; i++) |
7ecb6532 | 2605 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
d5d0a62f EZ |
2606 | { |
2607 | i = -1; | |
2608 | break; | |
2609 | } | |
2610 | if (i == -1) | |
2611 | continue; | |
2612 | } | |
2613 | psymtab_include_list[includes_used++] = namestring; | |
2614 | if (includes_used >= includes_allocated) | |
2615 | { | |
0d5cff50 | 2616 | const char **orig = psymtab_include_list; |
c906108c | 2617 | |
0d5cff50 | 2618 | psymtab_include_list = (const char **) |
d5d0a62f | 2619 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 2620 | sizeof (const char *)); |
4efb68b1 | 2621 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 2622 | includes_used * sizeof (const char *)); |
d5d0a62f EZ |
2623 | } |
2624 | continue; | |
2625 | } | |
c906108c SS |
2626 | case C_FUN: |
2627 | /* The value of the C_FUN is not the address of the function (it | |
2628 | appears to be the address before linking), but as long as it | |
2629 | is smaller than the actual address, then find_pc_partial_function | |
2630 | will use the minimal symbols instead. I hope. */ | |
2631 | ||
2632 | case C_GSYM: | |
2633 | case C_ECOML: | |
2634 | case C_DECL: | |
2635 | case C_STSYM: | |
d5d0a62f | 2636 | { |
d5d0a62f | 2637 | char *p; |
a109c7c1 | 2638 | |
d5d0a62f EZ |
2639 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2640 | &ssymnum, objfile); | |
2641 | ||
ed4b0e6a | 2642 | p = strchr (namestring, ':'); |
d5d0a62f EZ |
2643 | if (!p) |
2644 | continue; /* Not a debugging symbol. */ | |
2645 | ||
2646 | /* Main processing section for debugging symbols which | |
2647 | the initial read through the symbol tables needs to worry | |
2648 | about. If we reach this point, the symbol which we are | |
2649 | considering is definitely one we are interested in. | |
2650 | p must also contain the (valid) index into the namestring | |
2651 | which indicates the debugging type symbol. */ | |
2652 | ||
2653 | switch (p[1]) | |
2654 | { | |
2655 | case 'S': | |
3e43a32a MS |
2656 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2657 | SECT_OFF_DATA (objfile)); | |
149ad273 | 2658 | |
5e2b427d | 2659 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 2660 | namestring = gdbarch_static_transform_name |
5e2b427d | 2661 | (gdbarch, namestring); |
149ad273 | 2662 | |
04a679b8 | 2663 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2664 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f EZ |
2665 | &objfile->static_psymbols, |
2666 | 0, symbol.n_value, | |
2667 | psymtab_language, objfile); | |
2668 | continue; | |
2669 | ||
2670 | case 'G': | |
3e43a32a MS |
2671 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2672 | SECT_OFF_DATA (objfile)); | |
d5d0a62f | 2673 | /* The addresses in these entries are reported to be |
581e13c1 | 2674 | wrong. See the code that reads 'G's for symtabs. */ |
04a679b8 | 2675 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2676 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f EZ |
2677 | &objfile->global_psymbols, |
2678 | 0, symbol.n_value, | |
2679 | psymtab_language, objfile); | |
2680 | continue; | |
2681 | ||
2682 | case 'T': | |
2683 | /* When a 'T' entry is defining an anonymous enum, it | |
2684 | may have a name which is the empty string, or a | |
2685 | single space. Since they're not really defining a | |
2686 | symbol, those shouldn't go in the partial symbol | |
2687 | table. We do pick up the elements of such enums at | |
2688 | 'check_enum:', below. */ | |
2689 | if (p >= namestring + 2 | |
2690 | || (p == namestring + 1 | |
2691 | && namestring[0] != ' ')) | |
2692 | { | |
04a679b8 | 2693 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2694 | STRUCT_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2695 | &objfile->static_psymbols, |
2696 | symbol.n_value, 0, | |
2697 | psymtab_language, objfile); | |
2698 | if (p[2] == 't') | |
2699 | { | |
2700 | /* Also a typedef with the same name. */ | |
04a679b8 | 2701 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2702 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2703 | &objfile->static_psymbols, |
2704 | symbol.n_value, 0, | |
2705 | psymtab_language, objfile); | |
2706 | p += 1; | |
2707 | } | |
d5d0a62f EZ |
2708 | } |
2709 | goto check_enum; | |
2710 | ||
2711 | case 't': | |
581e13c1 | 2712 | if (p != namestring) /* a name is there, not just :T... */ |
d5d0a62f | 2713 | { |
04a679b8 | 2714 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2715 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2716 | &objfile->static_psymbols, |
2717 | symbol.n_value, 0, | |
2718 | psymtab_language, objfile); | |
2719 | } | |
2720 | check_enum: | |
2721 | /* If this is an enumerated type, we need to | |
2722 | add all the enum constants to the partial symbol | |
2723 | table. This does not cover enums without names, e.g. | |
2724 | "enum {a, b} c;" in C, but fortunately those are | |
2725 | rare. There is no way for GDB to find those from the | |
2726 | enum type without spending too much time on it. Thus | |
2727 | to solve this problem, the compiler needs to put out the | |
2728 | enum in a nameless type. GCC2 does this. */ | |
2729 | ||
2730 | /* We are looking for something of the form | |
2731 | <name> ":" ("t" | "T") [<number> "="] "e" | |
2732 | {<constant> ":" <value> ","} ";". */ | |
2733 | ||
2734 | /* Skip over the colon and the 't' or 'T'. */ | |
2735 | p += 2; | |
2736 | /* This type may be given a number. Also, numbers can come | |
2737 | in pairs like (0,26). Skip over it. */ | |
2738 | while ((*p >= '0' && *p <= '9') | |
2739 | || *p == '(' || *p == ',' || *p == ')' | |
2740 | || *p == '=') | |
2741 | p++; | |
2742 | ||
2743 | if (*p++ == 'e') | |
2744 | { | |
3e43a32a MS |
2745 | /* The aix4 compiler emits extra crud before the |
2746 | members. */ | |
d5d0a62f EZ |
2747 | if (*p == '-') |
2748 | { | |
2749 | /* Skip over the type (?). */ | |
2750 | while (*p != ':') | |
2751 | p++; | |
2752 | ||
2753 | /* Skip over the colon. */ | |
2754 | p++; | |
2755 | } | |
2756 | ||
2757 | /* We have found an enumerated type. */ | |
2758 | /* According to comments in read_enum_type | |
2759 | a comma could end it instead of a semicolon. | |
2760 | I don't know where that happens. | |
2761 | Accept either. */ | |
2762 | while (*p && *p != ';' && *p != ',') | |
2763 | { | |
2764 | char *q; | |
2765 | ||
2766 | /* Check for and handle cretinous dbx symbol name | |
2767 | continuation! */ | |
2768 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
2769 | p = next_symbol_text (objfile); | |
2770 | ||
2771 | /* Point to the character after the name | |
2772 | of the enum constant. */ | |
2773 | for (q = p; *q && *q != ':'; q++) | |
2774 | ; | |
2775 | /* Note that the value doesn't matter for | |
2776 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 2777 | add_psymbol_to_list (p, q - p, 1, |
176620f1 | 2778 | VAR_DOMAIN, LOC_CONST, |
d5d0a62f EZ |
2779 | &objfile->static_psymbols, 0, |
2780 | 0, psymtab_language, objfile); | |
2781 | /* Point past the name. */ | |
2782 | p = q; | |
2783 | /* Skip over the value. */ | |
2784 | while (*p && *p != ',') | |
2785 | p++; | |
2786 | /* Advance past the comma. */ | |
2787 | if (*p) | |
2788 | p++; | |
2789 | } | |
2790 | } | |
2791 | continue; | |
2792 | ||
2793 | case 'c': | |
2794 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 2795 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2796 | VAR_DOMAIN, LOC_CONST, |
d5d0a62f EZ |
2797 | &objfile->static_psymbols, symbol.n_value, |
2798 | 0, psymtab_language, objfile); | |
2799 | continue; | |
2800 | ||
2801 | case 'f': | |
2802 | if (! pst) | |
2803 | { | |
2804 | int name_len = p - namestring; | |
2805 | char *name = xmalloc (name_len + 1); | |
a109c7c1 | 2806 | |
d5d0a62f EZ |
2807 | memcpy (name, namestring, name_len); |
2808 | name[name_len] = '\0'; | |
23136709 | 2809 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2810 | xfree (name); |
2811 | } | |
3e43a32a MS |
2812 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2813 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2814 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2815 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f EZ |
2816 | &objfile->static_psymbols, |
2817 | 0, symbol.n_value, | |
2818 | psymtab_language, objfile); | |
2819 | continue; | |
2820 | ||
2821 | /* Global functions were ignored here, but now they | |
2822 | are put into the global psymtab like one would expect. | |
2823 | They're also in the minimal symbol table. */ | |
2824 | case 'F': | |
2825 | if (! pst) | |
2826 | { | |
2827 | int name_len = p - namestring; | |
2828 | char *name = xmalloc (name_len + 1); | |
a109c7c1 | 2829 | |
d5d0a62f EZ |
2830 | memcpy (name, namestring, name_len); |
2831 | name[name_len] = '\0'; | |
23136709 | 2832 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2833 | xfree (name); |
2834 | } | |
9f1d5432 PH |
2835 | |
2836 | /* We need only the minimal symbols for these | |
581e13c1 | 2837 | loader-generated definitions. Keeping the global |
9f1d5432 | 2838 | symbols leads to "in psymbols but not in symbols" |
581e13c1 | 2839 | errors. */ |
9f1d5432 PH |
2840 | if (strncmp (namestring, "@FIX", 4) == 0) |
2841 | continue; | |
2842 | ||
3e43a32a MS |
2843 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2844 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2845 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2846 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f EZ |
2847 | &objfile->global_psymbols, |
2848 | 0, symbol.n_value, | |
2849 | psymtab_language, objfile); | |
2850 | continue; | |
2851 | ||
2852 | /* Two things show up here (hopefully); static symbols of | |
2853 | local scope (static used inside braces) or extensions | |
2854 | of structure symbols. We can ignore both. */ | |
2855 | case 'V': | |
2856 | case '(': | |
2857 | case '0': | |
2858 | case '1': | |
2859 | case '2': | |
2860 | case '3': | |
2861 | case '4': | |
2862 | case '5': | |
2863 | case '6': | |
2864 | case '7': | |
2865 | case '8': | |
2866 | case '9': | |
2867 | case '-': | |
3e43a32a MS |
2868 | case '#': /* For symbol identification (used in |
2869 | live ranges). */ | |
d5d0a62f EZ |
2870 | continue; |
2871 | ||
2872 | case ':': | |
2873 | /* It is a C++ nested symbol. We don't need to record it | |
2874 | (I don't think); if we try to look up foo::bar::baz, | |
2875 | then symbols for the symtab containing foo should get | |
2876 | read in, I think. */ | |
2877 | /* Someone says sun cc puts out symbols like | |
2878 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2879 | which would get here with a symbol type of ':'. */ | |
2880 | continue; | |
2881 | ||
2882 | default: | |
3e43a32a MS |
2883 | /* Unexpected symbol descriptor. The second and |
2884 | subsequent stabs of a continued stab can show up | |
2885 | here. The question is whether they ever can mimic | |
2886 | a normal stab--it would be nice if not, since we | |
2887 | certainly don't want to spend the time searching to | |
2888 | the end of every string looking for a | |
2889 | backslash. */ | |
d5d0a62f | 2890 | |
23136709 | 2891 | complaint (&symfile_complaints, |
e2e0b3e5 | 2892 | _("unknown symbol descriptor `%c'"), p[1]); |
d5d0a62f EZ |
2893 | |
2894 | /* Ignore it; perhaps it is an extension that we don't | |
2895 | know about. */ | |
2896 | continue; | |
2897 | } | |
2898 | } | |
c906108c SS |
2899 | } |
2900 | } | |
2901 | ||
2902 | if (pst) | |
2903 | { | |
5c80ed9d | 2904 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
c906108c SS |
2905 | ssymnum, dependency_list, |
2906 | dependencies_used, textlow_not_set); | |
2907 | } | |
2908 | ||
581e13c1 MS |
2909 | /* Record the toc offset value of this symbol table into objfile |
2910 | structure. If no XMC_TC0 is found, toc_offset should be zero. | |
2911 | Another place to obtain this information would be file auxiliary | |
2912 | header. */ | |
c906108c | 2913 | |
b8b98ad1 | 2914 | XCOFF_DATA (objfile)->toc_offset = toc_offset; |
c906108c SS |
2915 | } |
2916 | ||
2917 | /* Return the toc offset value for a given objfile. */ | |
2918 | ||
2919 | CORE_ADDR | |
63807e1d | 2920 | xcoff_get_toc_offset (struct objfile *objfile) |
c906108c SS |
2921 | { |
2922 | if (objfile) | |
b8b98ad1 | 2923 | return XCOFF_DATA (objfile)->toc_offset; |
c906108c SS |
2924 | return 0; |
2925 | } | |
2926 | ||
2927 | /* Scan and build partial symbols for a symbol file. | |
2928 | We have been initialized by a call to dbx_symfile_init, which | |
2929 | put all the relevant info into a "struct dbx_symfile_info", | |
2930 | hung off the objfile structure. | |
2931 | ||
2932 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
581e13c1 MS |
2933 | various sections are (depending where the sections were actually |
2934 | loaded). */ | |
c906108c SS |
2935 | |
2936 | static void | |
f4352531 | 2937 | xcoff_initial_scan (struct objfile *objfile, int symfile_flags) |
c906108c SS |
2938 | { |
2939 | bfd *abfd; | |
2940 | int val; | |
2941 | struct cleanup *back_to; | |
c5aa993b JM |
2942 | int num_symbols; /* # of symbols */ |
2943 | file_ptr symtab_offset; /* symbol table and */ | |
2944 | file_ptr stringtab_offset; /* string table file offsets */ | |
c906108c SS |
2945 | struct coff_symfile_info *info; |
2946 | char *name; | |
2947 | unsigned int size; | |
2948 | ||
b8b98ad1 | 2949 | info = XCOFF_DATA (objfile); |
c906108c SS |
2950 | symfile_bfd = abfd = objfile->obfd; |
2951 | name = objfile->name; | |
2952 | ||
2953 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2954 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2955 | stringtab_offset = symtab_offset + | |
c5aa993b | 2956 | num_symbols * coff_data (abfd)->local_symesz; |
c906108c SS |
2957 | |
2958 | info->min_lineno_offset = 0; | |
2959 | info->max_lineno_offset = 0; | |
2960 | bfd_map_over_sections (abfd, find_linenos, info); | |
2961 | ||
2962 | if (num_symbols > 0) | |
2963 | { | |
2964 | /* Read the string table. */ | |
2965 | init_stringtab (abfd, stringtab_offset, objfile); | |
2966 | ||
2967 | /* Read the .debug section, if present. */ | |
2968 | { | |
7be0c536 | 2969 | struct bfd_section *secp; |
c906108c | 2970 | bfd_size_type length; |
ea9f10bb | 2971 | bfd_byte *debugsec = NULL; |
c906108c SS |
2972 | |
2973 | secp = bfd_get_section_by_name (abfd, ".debug"); | |
2974 | if (secp) | |
2975 | { | |
2976 | length = bfd_section_size (abfd, secp); | |
2977 | if (length) | |
2978 | { | |
ea9f10bb | 2979 | debugsec = obstack_alloc (&objfile->objfile_obstack, length); |
c906108c | 2980 | |
ea9f10bb | 2981 | if (!bfd_get_full_section_contents (abfd, secp, &debugsec)) |
c906108c | 2982 | { |
8a3fe4f8 | 2983 | error (_("Error reading .debug section of `%s': %s"), |
c906108c SS |
2984 | name, bfd_errmsg (bfd_get_error ())); |
2985 | } | |
2986 | } | |
2987 | } | |
b8b98ad1 | 2988 | info->debugsec = debugsec; |
c906108c SS |
2989 | } |
2990 | } | |
2991 | ||
2992 | /* Read the symbols. We keep them in core because we will want to | |
2993 | access them randomly in read_symbol*. */ | |
2994 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); | |
2995 | if (val < 0) | |
8a3fe4f8 | 2996 | error (_("Error reading symbols from %s: %s"), |
c906108c SS |
2997 | name, bfd_errmsg (bfd_get_error ())); |
2998 | size = coff_data (abfd)->local_symesz * num_symbols; | |
b8b98ad1 TT |
2999 | info->symtbl = obstack_alloc (&objfile->objfile_obstack, size); |
3000 | info->symtbl_num_syms = num_symbols; | |
3001 | ||
3002 | val = bfd_bread (info->symtbl, size, abfd); | |
c906108c | 3003 | if (val != size) |
e2e0b3e5 | 3004 | perror_with_name (_("reading symbol table")); |
c906108c | 3005 | |
581e13c1 | 3006 | /* If we are reinitializing, or if we have never loaded syms yet, init. */ |
de1d8fb9 | 3007 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3008 | /* I'm not sure how how good num_symbols is; the rule of thumb in |
3009 | init_psymbol_list was developed for a.out. On the one hand, | |
3010 | num_symbols includes auxents. On the other hand, it doesn't | |
3011 | include N_SLINE. */ | |
3012 | init_psymbol_list (objfile, num_symbols); | |
3013 | ||
3014 | free_pending_blocks (); | |
a0b3c4fd | 3015 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c SS |
3016 | |
3017 | init_minimal_symbol_collection (); | |
56e290f4 | 3018 | make_cleanup_discard_minimal_symbols (); |
c906108c SS |
3019 | |
3020 | /* Now that the symbol table data of the executable file are all in core, | |
3021 | process them and define symbols accordingly. */ | |
3022 | ||
d4f3574e | 3023 | scan_xcoff_symtab (objfile); |
c906108c SS |
3024 | |
3025 | /* Install any minimal symbols that have been collected as the current | |
581e13c1 | 3026 | minimal symbols for this objfile. */ |
c906108c SS |
3027 | |
3028 | install_minimal_symbols (objfile); | |
3029 | ||
316a8b21 TG |
3030 | /* DWARF2 sections. */ |
3031 | ||
3032 | if (dwarf2_has_info (objfile, &dwarf2_xcoff_names)) | |
3033 | dwarf2_build_psymtabs (objfile); | |
3034 | ||
3035 | dwarf2_build_frame_info (objfile); | |
3036 | ||
c906108c SS |
3037 | do_cleanups (back_to); |
3038 | } | |
3039 | \f | |
d4f3574e | 3040 | static void |
3e43a32a MS |
3041 | xcoff_symfile_offsets (struct objfile *objfile, |
3042 | struct section_addr_info *addrs) | |
c906108c | 3043 | { |
b8fbeb18 | 3044 | asection *sect = NULL; |
c906108c SS |
3045 | int i; |
3046 | ||
a39a16c4 | 3047 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
d4f3574e | 3048 | objfile->section_offsets = (struct section_offsets *) |
8b92e4d5 | 3049 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 3050 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
c906108c | 3051 | |
581e13c1 | 3052 | /* Initialize the section indexes for future use. */ |
b8fbeb18 EZ |
3053 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
3054 | if (sect) | |
3055 | objfile->sect_index_text = sect->index; | |
3056 | ||
3057 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
3058 | if (sect) | |
3059 | objfile->sect_index_data = sect->index; | |
3060 | ||
3061 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
3062 | if (sect) | |
3063 | objfile->sect_index_bss = sect->index; | |
3064 | ||
3065 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
3066 | if (sect) | |
3067 | objfile->sect_index_rodata = sect->index; | |
3068 | ||
c906108c | 3069 | for (i = 0; i < objfile->num_sections; ++i) |
b8fbeb18 EZ |
3070 | { |
3071 | /* syms_from_objfile kindly subtracts from addr the | |
3072 | bfd_section_vma of the .text section. This strikes me as | |
3073 | wrong--whether the offset to be applied to symbol reading is | |
3074 | relative to the start address of the section depends on the | |
3075 | symbol format. In any event, this whole "addr" concept is | |
3076 | pretty broken (it doesn't handle any section but .text | |
3077 | sensibly), so just ignore the addr parameter and use 0. | |
3078 | rs6000-nat.c will set the correct section offsets via | |
3079 | objfile_relocate. */ | |
f0a58b0b | 3080 | (objfile->section_offsets)->offsets[i] = 0; |
b8fbeb18 | 3081 | } |
c906108c SS |
3082 | } |
3083 | ||
3084 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
3085 | ||
00b5771c | 3086 | static const struct sym_fns xcoff_sym_fns = |
c906108c SS |
3087 | { |
3088 | ||
7a78ae4e | 3089 | /* It is possible that coff and xcoff should be merged as |
c906108c SS |
3090 | they do have fundamental similarities (for example, the extra storage |
3091 | classes used for stabs could presumably be recognized in any COFF file). | |
3092 | However, in addition to obvious things like all the csect hair, there are | |
3093 | some subtler differences between xcoffread.c and coffread.c, notably | |
3094 | the fact that coffread.c has no need to read in all the symbols, but | |
3095 | xcoffread.c reads all the symbols and does in fact randomly access them | |
3096 | (in C_BSTAT and line number processing). */ | |
3097 | ||
7a78ae4e | 3098 | bfd_target_xcoff_flavour, |
c906108c | 3099 | |
3e43a32a MS |
3100 | xcoff_new_init, /* init anything gbl to entire symtab */ |
3101 | xcoff_symfile_init, /* read initial info, setup for sym_read() */ | |
3102 | xcoff_initial_scan, /* read a symbol file into symtab */ | |
b11896a5 | 3103 | NULL, /* sym_read_psymbols */ |
3e43a32a MS |
3104 | xcoff_symfile_finish, /* finished with file, cleanup */ |
3105 | xcoff_symfile_offsets, /* xlate offsets ext->int form */ | |
3106 | default_symfile_segments, /* Get segment information from a file. */ | |
3107 | aix_process_linenos, | |
3108 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3109 | NULL, /* sym_probe_fns */ |
00b5771c | 3110 | &psym_functions |
c906108c SS |
3111 | }; |
3112 | ||
d5367fe1 JB |
3113 | /* Same as xcoff_get_n_import_files, but for core files. */ |
3114 | ||
3115 | static int | |
3116 | xcoff_get_core_n_import_files (bfd *abfd) | |
3117 | { | |
3118 | asection *sect = bfd_get_section_by_name (abfd, ".ldinfo"); | |
3119 | gdb_byte buf[4]; | |
3120 | file_ptr offset = 0; | |
3121 | int n_entries = 0; | |
3122 | ||
3123 | if (sect == NULL) | |
3124 | return -1; /* Not a core file. */ | |
3125 | ||
3126 | for (offset = 0; offset < bfd_get_section_size (sect);) | |
3127 | { | |
3128 | int next; | |
3129 | ||
3130 | n_entries++; | |
3131 | ||
3132 | if (!bfd_get_section_contents (abfd, sect, buf, offset, 4)) | |
3133 | return -1; | |
3134 | next = bfd_get_32 (abfd, buf); | |
3135 | if (next == 0) | |
3136 | break; /* This is the last entry. */ | |
3137 | offset += next; | |
3138 | } | |
3139 | ||
3140 | /* Return the number of entries, excluding the first one, which is | |
3141 | the path to the executable that produced this core file. */ | |
3142 | return n_entries - 1; | |
3143 | } | |
3144 | ||
3145 | /* Return the number of import files (shared libraries) that the given | |
3146 | BFD depends on. Return -1 if this number could not be computed. */ | |
3147 | ||
3148 | int | |
3149 | xcoff_get_n_import_files (bfd *abfd) | |
3150 | { | |
3151 | asection *sect = bfd_get_section_by_name (abfd, ".loader"); | |
3152 | gdb_byte buf[4]; | |
3153 | int l_nimpid; | |
3154 | ||
3155 | /* If the ".loader" section does not exist, the objfile is probably | |
3156 | not an executable. Might be a core file... */ | |
3157 | if (sect == NULL) | |
3158 | return xcoff_get_core_n_import_files (abfd); | |
3159 | ||
3160 | /* The number of entries in the Import Files Table is stored in | |
3161 | field l_nimpid. This field is always at offset 16, and is | |
3162 | always 4 bytes long. Read those 4 bytes. */ | |
3163 | ||
3164 | if (!bfd_get_section_contents (abfd, sect, buf, 16, 4)) | |
3165 | return -1; | |
3166 | l_nimpid = bfd_get_32 (abfd, buf); | |
3167 | ||
3168 | /* By convention, the first entry is the default LIBPATH value | |
3169 | to be used by the system loader, so it does not count towards | |
3170 | the number of import files. */ | |
3171 | return l_nimpid - 1; | |
3172 | } | |
3173 | ||
b8b98ad1 TT |
3174 | /* Free the per-objfile xcoff data. */ |
3175 | ||
3176 | static void | |
3177 | xcoff_free_info (struct objfile *objfile, void *arg) | |
3178 | { | |
3179 | xfree (arg); | |
3180 | } | |
3181 | ||
63807e1d PA |
3182 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
3183 | extern initialize_file_ftype _initialize_xcoffread; | |
3184 | ||
c906108c | 3185 | void |
fba45db2 | 3186 | _initialize_xcoffread (void) |
c906108c | 3187 | { |
c5aa993b | 3188 | add_symtab_fns (&xcoff_sym_fns); |
b8b98ad1 TT |
3189 | |
3190 | xcoff_objfile_data_key = register_objfile_data_with_cleanup (NULL, | |
3191 | xcoff_free_info); | |
c906108c | 3192 | } |