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 |
65cf3563 | 281 | *args->resultp = gdb_bfd_section_index (abfd, sect); |
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 | ||
46212e0b | 658 | if (strcmp (inclTable[ii].name, get_last_source_file ()) == 0) |
c5933f6d JB |
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) { \ | |
46212e0b | 897 | set_last_source_file (name); \ |
1b36a34b | 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 | if (name[0] == '.') |
926 | ++name; | |
927 | ||
ec92004f | 928 | prim_record_minimal_symbol_and_info (name, address, ms_type, |
e6dc44a8 TT |
929 | secnum_to_section (n_scnum, objfile), |
930 | objfile); | |
ec92004f | 931 | } |
c906108c | 932 | |
581e13c1 MS |
933 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
934 | nested. At any given time, a symbol can only be in one static block. | |
935 | This is the base address of current static block, zero if non exists. */ | |
c5aa993b | 936 | |
c906108c SS |
937 | static int static_block_base = 0; |
938 | ||
939 | /* Section number for the current static block. */ | |
940 | ||
941 | static int static_block_section = -1; | |
942 | ||
581e13c1 | 943 | /* true if space for symbol name has been allocated. */ |
c906108c SS |
944 | |
945 | static int symname_alloced = 0; | |
946 | ||
947 | /* Next symbol to read. Pointer into raw seething symbol table. */ | |
948 | ||
949 | static char *raw_symbol; | |
950 | ||
951 | /* This is the function which stabsread.c calls to get symbol | |
952 | continuations. */ | |
953 | ||
954 | static char * | |
fba45db2 | 955 | xcoff_next_symbol_text (struct objfile *objfile) |
c906108c SS |
956 | { |
957 | struct internal_syment symbol; | |
c906108c | 958 | char *retval; |
a109c7c1 | 959 | |
581e13c1 | 960 | /* FIXME: is this the same as the passed arg? */ |
5c80ed9d TT |
961 | if (this_symtab_objfile) |
962 | objfile = this_symtab_objfile; | |
c906108c SS |
963 | |
964 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); | |
965 | if (symbol.n_zeroes) | |
966 | { | |
e2e0b3e5 | 967 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
968 | |
969 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 970 | code does something reasonable. */ |
c906108c SS |
971 | retval = ""; |
972 | } | |
973 | else if (symbol.n_sclass & 0x80) | |
974 | { | |
b8b98ad1 | 975 | retval = XCOFF_DATA (objfile)->debugsec + symbol.n_offset; |
3e43a32a | 976 | raw_symbol += coff_data (objfile->obfd)->local_symesz; |
c906108c SS |
977 | ++symnum; |
978 | } | |
979 | else | |
980 | { | |
e2e0b3e5 | 981 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
982 | |
983 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 984 | code does something reasonable. */ |
c906108c SS |
985 | retval = ""; |
986 | } | |
987 | return retval; | |
988 | } | |
989 | ||
990 | /* Read symbols for a given partial symbol table. */ | |
991 | ||
992 | static void | |
5c80ed9d | 993 | read_xcoff_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 994 | { |
c906108c | 995 | bfd *abfd = objfile->obfd; |
581e13c1 | 996 | char *raw_auxptr; /* Pointer to first raw aux entry for sym. */ |
b8b98ad1 TT |
997 | struct coff_symfile_info *xcoff = XCOFF_DATA (objfile); |
998 | char *strtbl = xcoff->strtbl; | |
999 | char *debugsec = xcoff->debugsec; | |
554d387d | 1000 | const char *debugfmt = bfd_xcoff_is_xcoff64 (abfd) ? "XCOFF64" : "XCOFF"; |
c906108c SS |
1001 | |
1002 | struct internal_syment symbol[1]; | |
1003 | union internal_auxent main_aux; | |
1004 | struct coff_symbol cs[1]; | |
1005 | CORE_ADDR file_start_addr = 0; | |
1006 | CORE_ADDR file_end_addr = 0; | |
1007 | ||
1008 | int next_file_symnum = -1; | |
1009 | unsigned int max_symnum; | |
1010 | int just_started = 1; | |
1011 | int depth = 0; | |
1012 | int fcn_start_addr = 0; | |
1013 | ||
238ae9af | 1014 | struct coff_symbol fcn_stab_saved = { 0 }; |
c906108c | 1015 | |
581e13c1 | 1016 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
3672b1be | 1017 | union internal_auxent fcn_aux_saved = main_aux; |
c906108c SS |
1018 | struct context_stack *new; |
1019 | ||
581e13c1 | 1020 | char *filestring = " _start_ "; /* Name of the current file. */ |
c906108c | 1021 | |
40301fb7 | 1022 | const char *last_csect_name; /* Last seen csect's name. */ |
c906108c SS |
1023 | |
1024 | this_symtab_psymtab = pst; | |
5c80ed9d | 1025 | this_symtab_objfile = objfile; |
c906108c SS |
1026 | |
1027 | /* Get the appropriate COFF "constants" related to the file we're | |
581e13c1 | 1028 | handling. */ |
c906108c SS |
1029 | local_symesz = coff_data (abfd)->local_symesz; |
1030 | ||
46212e0b | 1031 | set_last_source_file (NULL); |
c906108c | 1032 | last_csect_name = 0; |
c906108c SS |
1033 | |
1034 | start_stabs (); | |
c5aa993b | 1035 | start_symtab (filestring, (char *) NULL, file_start_addr); |
7a78ae4e | 1036 | record_debugformat (debugfmt); |
c5aa993b | 1037 | symnum = ((struct symloc *) pst->read_symtab_private)->first_symnum; |
c906108c | 1038 | max_symnum = |
c5aa993b | 1039 | symnum + ((struct symloc *) pst->read_symtab_private)->numsyms; |
c906108c SS |
1040 | first_object_file_end = 0; |
1041 | ||
b8b98ad1 | 1042 | raw_symbol = xcoff->symtbl + symnum * local_symesz; |
c906108c SS |
1043 | |
1044 | while (symnum < max_symnum) | |
1045 | { | |
c906108c SS |
1046 | QUIT; /* make this command interruptable. */ |
1047 | ||
1048 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
581e13c1 | 1049 | /* read one symbol into `cs' structure. After processing the |
c5aa993b | 1050 | whole symbol table, only string table will be kept in memory, |
581e13c1 | 1051 | symbol table and debug section of xcoff will be freed. Thus |
c5aa993b | 1052 | we can mark symbols with names in string table as |
581e13c1 | 1053 | `alloced'. */ |
c906108c SS |
1054 | { |
1055 | int ii; | |
1056 | ||
1057 | /* Swap and align the symbol into a reasonable C structure. */ | |
1058 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1059 | ||
1060 | cs->c_symnum = symnum; | |
1061 | cs->c_naux = symbol->n_numaux; | |
1062 | if (symbol->n_zeroes) | |
1063 | { | |
1064 | symname_alloced = 0; | |
1065 | /* We must use the original, unswapped, name here so the name field | |
1066 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1067 | we use the new field, it gets overwritten for each symbol. */ | |
c5aa993b | 1068 | cs->c_name = ((struct external_syment *) raw_symbol)->e.e_name; |
c906108c SS |
1069 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1070 | '\0'-terminated. */ | |
1071 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1072 | { | |
1073 | char *p; | |
a109c7c1 | 1074 | |
4a146b47 | 1075 | p = obstack_alloc (&objfile->objfile_obstack, E_SYMNMLEN + 1); |
c906108c SS |
1076 | strncpy (p, cs->c_name, E_SYMNMLEN); |
1077 | p[E_SYMNMLEN] = '\0'; | |
1078 | cs->c_name = p; | |
1079 | symname_alloced = 1; | |
1080 | } | |
1081 | } | |
1082 | else if (symbol->n_sclass & 0x80) | |
1083 | { | |
1084 | cs->c_name = debugsec + symbol->n_offset; | |
1085 | symname_alloced = 0; | |
1086 | } | |
1087 | else | |
1088 | { | |
1089 | /* in string table */ | |
c5aa993b | 1090 | cs->c_name = strtbl + (int) symbol->n_offset; |
c906108c SS |
1091 | symname_alloced = 1; |
1092 | } | |
1093 | cs->c_value = symbol->n_value; | |
1094 | cs->c_sclass = symbol->n_sclass; | |
1095 | cs->c_secnum = symbol->n_scnum; | |
c5aa993b | 1096 | cs->c_type = (unsigned) symbol->n_type; |
c906108c | 1097 | |
7a78ae4e | 1098 | raw_symbol += local_symesz; |
c906108c SS |
1099 | ++symnum; |
1100 | ||
1101 | /* Save addr of first aux entry. */ | |
1102 | raw_auxptr = raw_symbol; | |
1103 | ||
1104 | /* Skip all the auxents associated with this symbol. */ | |
1105 | for (ii = symbol->n_numaux; ii; --ii) | |
1106 | { | |
1107 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1108 | ++symnum; | |
1109 | } | |
1110 | } | |
1111 | ||
581e13c1 | 1112 | /* if symbol name starts with ".$" or "$", ignore it. */ |
c906108c SS |
1113 | if (cs->c_name[0] == '$' |
1114 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1115 | continue; | |
1116 | ||
1117 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
1118 | { | |
46212e0b | 1119 | if (get_last_source_file ()) |
c906108c | 1120 | { |
3e43a32a MS |
1121 | pst->symtab = end_symtab (cur_src_end_addr, objfile, |
1122 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1123 | end_stabs (); |
1124 | } | |
1125 | ||
1126 | start_stabs (); | |
c5aa993b | 1127 | start_symtab ("_globals_", (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1128 | record_debugformat (debugfmt); |
c906108c | 1129 | cur_src_end_addr = first_object_file_end; |
581e13c1 | 1130 | /* Done with all files, everything from here on is globals. */ |
c906108c SS |
1131 | } |
1132 | ||
c906108c SS |
1133 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) |
1134 | && cs->c_naux == 1) | |
1135 | { | |
1136 | /* Dealing with a symbol with a csect entry. */ | |
1137 | ||
1138 | #define CSECT(PP) ((PP)->x_csect) | |
1139 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1140 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1141 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1142 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1143 | ||
1144 | /* Convert the auxent to something we can access. */ | |
1145 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1146 | 0, cs->c_naux, &main_aux); | |
1147 | ||
1148 | switch (CSECT_SMTYP (&main_aux)) | |
1149 | { | |
1150 | ||
1151 | case XTY_ER: | |
1152 | /* Ignore all external references. */ | |
1153 | continue; | |
1154 | ||
1155 | case XTY_SD: | |
1156 | /* A section description. */ | |
1157 | { | |
1158 | switch (CSECT_SCLAS (&main_aux)) | |
1159 | { | |
1160 | ||
1161 | case XMC_PR: | |
1162 | { | |
1163 | ||
1164 | /* A program csect is seen. We have to allocate one | |
c5aa993b JM |
1165 | symbol table for each program csect. Normally gdb |
1166 | prefers one symtab for each source file. In case | |
1167 | of AIX, one source file might include more than one | |
1168 | [PR] csect, and they don't have to be adjacent in | |
581e13c1 | 1169 | terms of the space they occupy in memory. Thus, one |
c5aa993b JM |
1170 | single source file might get fragmented in the |
1171 | memory and gdb's file start and end address | |
1172 | approach does not work! GCC (and I think xlc) seem | |
1173 | to put all the code in the unnamed program csect. */ | |
c906108c SS |
1174 | |
1175 | if (last_csect_name) | |
1176 | { | |
1177 | complete_symtab (filestring, file_start_addr); | |
1178 | cur_src_end_addr = file_end_addr; | |
3e43a32a MS |
1179 | end_symtab (file_end_addr, objfile, |
1180 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1181 | end_stabs (); |
1182 | start_stabs (); | |
1183 | /* Give all csects for this source file the same | |
1184 | name. */ | |
c5aa993b | 1185 | start_symtab (filestring, NULL, (CORE_ADDR) 0); |
7a78ae4e | 1186 | record_debugformat (debugfmt); |
c906108c SS |
1187 | } |
1188 | ||
1189 | /* If this is the very first csect seen, | |
581e13c1 | 1190 | basically `__start'. */ |
c906108c SS |
1191 | if (just_started) |
1192 | { | |
1193 | first_object_file_end | |
1194 | = cs->c_value + CSECT_LEN (&main_aux); | |
1195 | just_started = 0; | |
1196 | } | |
1197 | ||
1198 | file_start_addr = | |
1199 | cs->c_value + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1200 | SECT_OFF_TEXT (objfile)); |
c906108c SS |
1201 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); |
1202 | ||
40301fb7 JB |
1203 | if (cs->c_name && (cs->c_name[0] == '.' || cs->c_name[0] == '@')) |
1204 | last_csect_name = cs->c_name; | |
c906108c SS |
1205 | } |
1206 | continue; | |
1207 | ||
1208 | /* All other symbols are put into the minimal symbol | |
1209 | table only. */ | |
1210 | ||
1211 | case XMC_RW: | |
1212 | continue; | |
1213 | ||
1214 | case XMC_TC0: | |
1215 | continue; | |
1216 | ||
1217 | case XMC_TC: | |
1218 | continue; | |
1219 | ||
1220 | default: | |
1221 | /* Ignore the symbol. */ | |
1222 | continue; | |
1223 | } | |
1224 | } | |
1225 | break; | |
1226 | ||
1227 | case XTY_LD: | |
1228 | ||
1229 | switch (CSECT_SCLAS (&main_aux)) | |
1230 | { | |
1231 | case XMC_PR: | |
581e13c1 | 1232 | /* a function entry point. */ |
c906108c SS |
1233 | function_entry_point: |
1234 | ||
1235 | fcn_start_addr = cs->c_value; | |
1236 | ||
1237 | /* save the function header info, which will be used | |
581e13c1 | 1238 | when `.bf' is seen. */ |
c906108c SS |
1239 | fcn_cs_saved = *cs; |
1240 | fcn_aux_saved = main_aux; | |
1241 | continue; | |
1242 | ||
1243 | case XMC_GL: | |
581e13c1 | 1244 | /* shared library function trampoline code entry point. */ |
c906108c SS |
1245 | continue; |
1246 | ||
1247 | case XMC_DS: | |
1248 | /* The symbols often have the same names as debug symbols for | |
1249 | functions, and confuse lookup_symbol. */ | |
1250 | continue; | |
1251 | ||
1252 | default: | |
1253 | /* xlc puts each variable in a separate csect, so we get | |
1254 | an XTY_SD for each variable. But gcc puts several | |
1255 | variables in a csect, so that each variable only gets | |
581e13c1 | 1256 | an XTY_LD. This will typically be XMC_RW; I suspect |
c906108c SS |
1257 | XMC_RO and XMC_BS might be possible too. |
1258 | These variables are put in the minimal symbol table | |
1259 | only. */ | |
1260 | continue; | |
1261 | } | |
1262 | break; | |
1263 | ||
1264 | case XTY_CM: | |
1265 | /* Common symbols are put into the minimal symbol table only. */ | |
1266 | continue; | |
1267 | ||
1268 | default: | |
1269 | break; | |
1270 | } | |
1271 | } | |
1272 | ||
977adac5 ND |
1273 | /* If explicitly specified as a function, treat is as one. This check |
1274 | evaluates to true for @FIX* bigtoc CSECT symbols, so it must occur | |
1275 | after the above CSECT check. */ | |
1276 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
1277 | { | |
1278 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1279 | 0, cs->c_naux, &main_aux); | |
1280 | goto function_entry_point; | |
1281 | } | |
1282 | ||
c906108c SS |
1283 | switch (cs->c_sclass) |
1284 | { | |
c906108c SS |
1285 | case C_FILE: |
1286 | ||
1287 | /* c_value field contains symnum of next .file entry in table | |
581e13c1 | 1288 | or symnum of first global after last .file. */ |
c906108c SS |
1289 | |
1290 | next_file_symnum = cs->c_value; | |
1291 | ||
1292 | /* Complete symbol table for last object file containing | |
581e13c1 | 1293 | debugging information. */ |
c906108c SS |
1294 | |
1295 | /* Whether or not there was a csect in the previous file, we | |
1296 | have to call `end_stabs' and `start_stabs' to reset | |
1297 | type_vector, line_vector, etc. structures. */ | |
1298 | ||
1299 | complete_symtab (filestring, file_start_addr); | |
1300 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1301 | end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1302 | end_stabs (); |
1303 | ||
3e43a32a MS |
1304 | /* XCOFF, according to the AIX 3.2 documentation, puts the |
1305 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
1306 | do things the standard COFF way and put it in the auxent. | |
1307 | We use the auxent if the symbol is ".file" and an auxent | |
1308 | exists, otherwise use the symbol itself. Simple | |
1309 | enough. */ | |
c906108c SS |
1310 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) |
1311 | { | |
1312 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1313 | 0, cs->c_naux, &main_aux); | |
1314 | filestring = coff_getfilename (&main_aux, objfile); | |
1315 | } | |
1316 | else | |
1317 | filestring = cs->c_name; | |
1318 | ||
1319 | start_stabs (); | |
c5aa993b | 1320 | start_symtab (filestring, (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1321 | record_debugformat (debugfmt); |
c906108c SS |
1322 | last_csect_name = 0; |
1323 | ||
581e13c1 | 1324 | /* reset file start and end addresses. A compilation unit |
3e43a32a | 1325 | with no text (only data) should have zero file |
581e13c1 | 1326 | boundaries. */ |
c906108c SS |
1327 | file_start_addr = file_end_addr = 0; |
1328 | break; | |
1329 | ||
1330 | case C_FUN: | |
1331 | fcn_stab_saved = *cs; | |
1332 | break; | |
1333 | ||
1334 | case C_FCN: | |
7ecb6532 | 1335 | if (strcmp (cs->c_name, ".bf") == 0) |
c906108c SS |
1336 | { |
1337 | CORE_ADDR off = ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1338 | SECT_OFF_TEXT (objfile)); |
a109c7c1 | 1339 | |
c906108c SS |
1340 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1341 | 0, cs->c_naux, &main_aux); | |
1342 | ||
1343 | within_function = 1; | |
1344 | ||
1345 | new = push_context (0, fcn_start_addr + off); | |
1346 | ||
c5aa993b | 1347 | new->name = define_symbol |
c906108c SS |
1348 | (fcn_cs_saved.c_value + off, |
1349 | fcn_stab_saved.c_name, 0, 0, objfile); | |
1350 | if (new->name != NULL) | |
b8fbeb18 | 1351 | SYMBOL_SECTION (new->name) = SECT_OFF_TEXT (objfile); |
c906108c | 1352 | } |
7ecb6532 | 1353 | else if (strcmp (cs->c_name, ".ef") == 0) |
c906108c | 1354 | { |
c906108c SS |
1355 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1356 | 0, cs->c_naux, &main_aux); | |
1357 | ||
1358 | /* The value of .ef is the address of epilogue code; | |
c5aa993b | 1359 | not useful for gdb. */ |
c906108c | 1360 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
c5aa993b | 1361 | contains number of lines to '}' */ |
c906108c SS |
1362 | |
1363 | if (context_stack_depth <= 0) | |
581e13c1 | 1364 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1365 | ef_complaint (cs->c_symnum); |
c906108c SS |
1366 | within_function = 0; |
1367 | break; | |
1368 | } | |
1369 | new = pop_context (); | |
1370 | /* Stack must be empty now. */ | |
1371 | if (context_stack_depth > 0 || new == NULL) | |
1372 | { | |
23136709 | 1373 | ef_complaint (cs->c_symnum); |
c906108c SS |
1374 | within_function = 0; |
1375 | break; | |
1376 | } | |
1377 | ||
1378 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1379 | new->start_addr, | |
1380 | (fcn_cs_saved.c_value | |
1381 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1382 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1383 | SECT_OFF_TEXT (objfile))), |
c906108c SS |
1384 | objfile); |
1385 | within_function = 0; | |
1386 | } | |
1387 | break; | |
1388 | ||
1389 | case C_BSTAT: | |
1390 | /* Begin static block. */ | |
1391 | { | |
1392 | struct internal_syment symbol; | |
1393 | ||
1394 | read_symbol (&symbol, cs->c_value); | |
1395 | static_block_base = symbol.n_value; | |
1396 | static_block_section = | |
1397 | secnum_to_section (symbol.n_scnum, objfile); | |
1398 | } | |
1399 | break; | |
1400 | ||
1401 | case C_ESTAT: | |
1402 | /* End of static block. */ | |
1403 | static_block_base = 0; | |
1404 | static_block_section = -1; | |
1405 | break; | |
1406 | ||
1407 | case C_ARG: | |
1408 | case C_REGPARM: | |
1409 | case C_REG: | |
1410 | case C_TPDEF: | |
1411 | case C_STRTAG: | |
1412 | case C_UNTAG: | |
1413 | case C_ENTAG: | |
1414 | { | |
3e43a32a MS |
1415 | complaint (&symfile_complaints, |
1416 | _("Unrecognized storage class %d."), | |
23136709 | 1417 | cs->c_sclass); |
c906108c SS |
1418 | } |
1419 | break; | |
1420 | ||
1421 | case C_LABEL: | |
1422 | case C_NULL: | |
1423 | /* Ignore these. */ | |
1424 | break; | |
1425 | ||
1426 | case C_HIDEXT: | |
1427 | case C_STAT: | |
1428 | break; | |
1429 | ||
1430 | case C_BINCL: | |
1431 | /* beginning of include file */ | |
1432 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
581e13c1 MS |
1433 | order. Thus, when wee see them, we might not know enough info |
1434 | to process them. Thus, we'll be saving them into a table | |
1435 | (inclTable) and postpone their processing. */ | |
c906108c SS |
1436 | |
1437 | record_include_begin (cs); | |
1438 | break; | |
1439 | ||
1440 | case C_EINCL: | |
1441 | /* End of include file. */ | |
1442 | /* See the comment after case C_BINCL. */ | |
1443 | record_include_end (cs); | |
1444 | break; | |
1445 | ||
1446 | case C_BLOCK: | |
7ecb6532 | 1447 | if (strcmp (cs->c_name, ".bb") == 0) |
c906108c SS |
1448 | { |
1449 | depth++; | |
1450 | new = push_context (depth, | |
1451 | (cs->c_value | |
1452 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1453 | SECT_OFF_TEXT (objfile)))); |
c906108c | 1454 | } |
7ecb6532 | 1455 | else if (strcmp (cs->c_name, ".eb") == 0) |
c906108c SS |
1456 | { |
1457 | if (context_stack_depth <= 0) | |
581e13c1 | 1458 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1459 | eb_complaint (cs->c_symnum); |
c906108c SS |
1460 | break; |
1461 | } | |
1462 | new = pop_context (); | |
1463 | if (depth-- != new->depth) | |
1464 | { | |
23136709 | 1465 | eb_complaint (cs->c_symnum); |
c906108c SS |
1466 | break; |
1467 | } | |
1468 | if (local_symbols && context_stack_depth > 0) | |
1469 | { | |
1470 | /* Make a block for the local symbols within. */ | |
1471 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1472 | new->start_addr, | |
1473 | (cs->c_value | |
1474 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1475 | SECT_OFF_TEXT (objfile))), |
c906108c SS |
1476 | objfile); |
1477 | } | |
1478 | local_symbols = new->locals; | |
1479 | } | |
1480 | break; | |
1481 | ||
1482 | default: | |
1483 | process_xcoff_symbol (cs, objfile); | |
1484 | break; | |
1485 | } | |
1486 | } | |
1487 | ||
46212e0b | 1488 | if (get_last_source_file ()) |
c906108c SS |
1489 | { |
1490 | struct symtab *s; | |
1491 | ||
1492 | complete_symtab (filestring, file_start_addr); | |
1493 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1494 | s = end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1495 | /* When reading symbols for the last C_FILE of the objfile, try |
1496 | to make sure that we set pst->symtab to the symtab for the | |
1497 | file, not to the _globals_ symtab. I'm not sure whether this | |
1498 | actually works right or when/if it comes up. */ | |
1499 | if (pst->symtab == NULL) | |
1500 | pst->symtab = s; | |
1501 | end_stabs (); | |
1502 | } | |
1503 | } | |
1504 | ||
1505 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
1506 | (SYMBOL2) = (struct symbol *) \ | |
4a146b47 | 1507 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); \ |
c906108c | 1508 | *(SYMBOL2) = *(SYMBOL1); |
c5aa993b JM |
1509 | |
1510 | ||
c906108c | 1511 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ |
10f0c4bb TT |
1512 | ((ALLOCED) ? (NAME) : obstack_copy0 (&objfile->objfile_obstack, \ |
1513 | (NAME), strlen (NAME))) | |
c906108c SS |
1514 | |
1515 | ||
581e13c1 | 1516 | /* process one xcoff symbol. */ |
c906108c SS |
1517 | |
1518 | static struct symbol * | |
aa1ee363 | 1519 | process_xcoff_symbol (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
1520 | { |
1521 | struct symbol onesymbol; | |
52f0bd74 | 1522 | struct symbol *sym = &onesymbol; |
c906108c SS |
1523 | struct symbol *sym2 = NULL; |
1524 | char *name, *pp; | |
1525 | ||
1526 | int sec; | |
1527 | CORE_ADDR off; | |
1528 | ||
1529 | if (cs->c_secnum < 0) | |
1530 | { | |
1531 | /* The value is a register number, offset within a frame, etc., | |
c5aa993b | 1532 | and does not get relocated. */ |
c906108c SS |
1533 | off = 0; |
1534 | sec = -1; | |
1535 | } | |
1536 | else | |
1537 | { | |
1538 | sec = secnum_to_section (cs->c_secnum, objfile); | |
1539 | off = ANOFFSET (objfile->section_offsets, sec); | |
1540 | } | |
1541 | ||
1542 | name = cs->c_name; | |
1543 | if (name[0] == '.') | |
1544 | ++name; | |
1545 | ||
e623cf5d | 1546 | initialize_symbol (sym); |
c906108c SS |
1547 | |
1548 | /* default assumptions */ | |
7a78ae4e | 1549 | SYMBOL_VALUE_ADDRESS (sym) = cs->c_value + off; |
176620f1 | 1550 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1551 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); |
1552 | ||
1553 | if (ISFCN (cs->c_type)) | |
1554 | { | |
1555 | /* At this point, we don't know the type of the function. This | |
c5aa993b JM |
1556 | will be patched with the type from its stab entry later on in |
1557 | patch_block_stabs (), unless the file was compiled without -g. */ | |
c906108c | 1558 | |
3567439c | 1559 | SYMBOL_SET_LINKAGE_NAME (sym, SYMNAME_ALLOC (name, symname_alloced)); |
46bf5051 | 1560 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_text_symbol; |
c906108c | 1561 | |
f1e6e072 | 1562 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1563 | SYMBOL_DUP (sym, sym2); |
1564 | ||
1565 | if (cs->c_sclass == C_EXT) | |
1566 | add_symbol_to_list (sym2, &global_symbols); | |
1567 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1568 | add_symbol_to_list (sym2, &file_symbols); | |
1569 | } | |
1570 | else | |
1571 | { | |
581e13c1 | 1572 | /* In case we can't figure out the type, provide default. */ |
46bf5051 | 1573 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
1574 | |
1575 | switch (cs->c_sclass) | |
1576 | { | |
1577 | #if 0 | |
c5aa993b JM |
1578 | /* The values of functions and global symbols are now resolved |
1579 | via the global_sym_chain in stabsread.c. */ | |
c906108c SS |
1580 | case C_FUN: |
1581 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1582 | add_stab_to_list (name, &global_stabs); | |
1583 | else | |
1584 | add_stab_to_list (name, &file_stabs); | |
1585 | break; | |
1586 | ||
1587 | case C_GSYM: | |
1588 | add_stab_to_list (name, &global_stabs); | |
1589 | break; | |
1590 | #endif | |
1591 | ||
1592 | case C_BCOMM: | |
1593 | common_block_start (cs->c_name, objfile); | |
1594 | break; | |
1595 | ||
1596 | case C_ECOMM: | |
1597 | common_block_end (objfile); | |
1598 | break; | |
1599 | ||
1600 | default: | |
e2e0b3e5 | 1601 | complaint (&symfile_complaints, _("Unexpected storage class: %d"), |
23136709 | 1602 | cs->c_sclass); |
c906108c SS |
1603 | /* FALLTHROUGH */ |
1604 | ||
1605 | case C_DECL: | |
1606 | case C_PSYM: | |
1607 | case C_RPSYM: | |
1608 | case C_ECOML: | |
1609 | case C_LSYM: | |
1610 | case C_RSYM: | |
1611 | case C_GSYM: | |
1612 | ||
1613 | { | |
1614 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1615 | if (sym != NULL) | |
1616 | { | |
1617 | SYMBOL_SECTION (sym) = sec; | |
1618 | } | |
1619 | return sym; | |
1620 | } | |
1621 | ||
1622 | case C_STSYM: | |
1623 | ||
1624 | /* For xlc (not GCC), the 'V' symbol descriptor is used for | |
1625 | all statics and we need to distinguish file-scope versus | |
1626 | function-scope using within_function. We do this by | |
1627 | changing the string we pass to define_symbol to use 'S' | |
1628 | where we need to, which is not necessarily super-clean, | |
1629 | but seems workable enough. */ | |
1630 | ||
9b13a2db PM |
1631 | if (*name == ':') |
1632 | return NULL; | |
1633 | ||
ed4b0e6a | 1634 | pp = strchr (name, ':'); |
9b13a2db | 1635 | if (pp == NULL) |
c906108c SS |
1636 | return NULL; |
1637 | ||
1638 | ++pp; | |
1639 | if (*pp == 'V' && !within_function) | |
1640 | *pp = 'S'; | |
1641 | sym = define_symbol ((cs->c_value | |
1642 | + ANOFFSET (objfile->section_offsets, | |
1643 | static_block_section)), | |
1644 | cs->c_name, 0, 0, objfile); | |
1645 | if (sym != NULL) | |
1646 | { | |
7a78ae4e | 1647 | SYMBOL_VALUE_ADDRESS (sym) += static_block_base; |
c906108c SS |
1648 | SYMBOL_SECTION (sym) = static_block_section; |
1649 | } | |
1650 | return sym; | |
1651 | ||
1652 | } | |
1653 | } | |
1654 | return sym2; | |
1655 | } | |
1656 | ||
1657 | /* Extract the file name from the aux entry of a C_FILE symbol. | |
1658 | Result is in static storage and is only good for temporary use. */ | |
1659 | ||
1660 | static char * | |
fba45db2 | 1661 | coff_getfilename (union internal_auxent *aux_entry, struct objfile *objfile) |
c906108c SS |
1662 | { |
1663 | static char buffer[BUFSIZ]; | |
1664 | ||
1665 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
b8b98ad1 TT |
1666 | strcpy (buffer, (XCOFF_DATA (objfile)->strtbl |
1667 | + aux_entry->x_file.x_n.x_offset)); | |
c906108c SS |
1668 | else |
1669 | { | |
1670 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1671 | buffer[FILNMLEN] = '\0'; | |
1672 | } | |
1673 | return (buffer); | |
1674 | } | |
1675 | ||
1676 | /* Set *SYMBOL to symbol number symno in symtbl. */ | |
1677 | static void | |
fba45db2 | 1678 | read_symbol (struct internal_syment *symbol, int symno) |
c906108c | 1679 | { |
5c80ed9d | 1680 | struct coff_symfile_info *xcoff = XCOFF_DATA (this_symtab_objfile); |
b8b98ad1 TT |
1681 | int nsyms = xcoff->symtbl_num_syms; |
1682 | char *stbl = xcoff->symtbl; | |
a109c7c1 | 1683 | |
c906108c SS |
1684 | if (symno < 0 || symno >= nsyms) |
1685 | { | |
e2e0b3e5 | 1686 | complaint (&symfile_complaints, _("Invalid symbol offset")); |
c906108c SS |
1687 | symbol->n_value = 0; |
1688 | symbol->n_scnum = -1; | |
1689 | return; | |
1690 | } | |
5c80ed9d | 1691 | bfd_coff_swap_sym_in (this_symtab_objfile->obfd, |
c5aa993b | 1692 | stbl + (symno * local_symesz), |
c906108c SS |
1693 | symbol); |
1694 | } | |
c5aa993b | 1695 | |
c906108c SS |
1696 | /* Get value corresponding to symbol number symno in symtbl. */ |
1697 | ||
470d5666 | 1698 | static CORE_ADDR |
fba45db2 | 1699 | read_symbol_nvalue (int symno) |
c906108c SS |
1700 | { |
1701 | struct internal_syment symbol[1]; | |
1702 | ||
1703 | read_symbol (symbol, symno); | |
c5aa993b | 1704 | return symbol->n_value; |
c906108c SS |
1705 | } |
1706 | ||
1707 | ||
1708 | /* Find the address of the function corresponding to symno, where | |
1709 | symno is the symbol pointed to by the linetable. */ | |
1710 | ||
1711 | static int | |
fba45db2 | 1712 | read_symbol_lineno (int symno) |
c906108c | 1713 | { |
5c80ed9d | 1714 | struct objfile *objfile = this_symtab_objfile; |
7af35dad | 1715 | int xcoff64 = bfd_xcoff_is_xcoff64 (objfile->obfd); |
7a78ae4e | 1716 | |
b8b98ad1 | 1717 | struct coff_symfile_info *info = XCOFF_DATA (objfile); |
7a78ae4e ND |
1718 | int nsyms = info->symtbl_num_syms; |
1719 | char *stbl = info->symtbl; | |
1720 | char *strtbl = info->strtbl; | |
1721 | ||
c906108c SS |
1722 | struct internal_syment symbol[1]; |
1723 | union internal_auxent main_aux[1]; | |
1724 | ||
1725 | if (symno < 0) | |
1726 | { | |
23136709 | 1727 | bf_notfound_complaint (); |
c906108c SS |
1728 | return 0; |
1729 | } | |
1730 | ||
1731 | /* Note that just searching for a short distance (e.g. 50 symbols) | |
1732 | is not enough, at least in the following case. | |
1733 | ||
1734 | .extern foo | |
1735 | [many .stabx entries] | |
1736 | [a few functions, referring to foo] | |
1737 | .globl foo | |
1738 | .bf | |
1739 | ||
1740 | What happens here is that the assembler moves the .stabx entries | |
1741 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1742 | all the stabx entries. See PR gdb/2222. */ | |
1743 | ||
1744 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1745 | If I understand things correctly it would need to be done only for | |
1746 | the duration of a single psymtab to symtab conversion. */ | |
1747 | while (symno < nsyms) | |
1748 | { | |
1749 | bfd_coff_swap_sym_in (symfile_bfd, | |
1750 | stbl + (symno * local_symesz), symbol); | |
7a78ae4e ND |
1751 | if (symbol->n_sclass == C_FCN) |
1752 | { | |
1753 | char *name = xcoff64 ? strtbl + symbol->n_offset : symbol->n_name; | |
a109c7c1 | 1754 | |
7ecb6532 | 1755 | if (strcmp (name, ".bf") == 0) |
7a78ae4e ND |
1756 | goto gotit; |
1757 | } | |
c906108c SS |
1758 | symno += symbol->n_numaux + 1; |
1759 | } | |
1760 | ||
23136709 | 1761 | bf_notfound_complaint (); |
c906108c SS |
1762 | return 0; |
1763 | ||
1764 | gotit: | |
581e13c1 | 1765 | /* Take aux entry and return its lineno. */ |
c906108c | 1766 | symno++; |
7a78ae4e | 1767 | bfd_coff_swap_aux_in (objfile->obfd, stbl + symno * local_symesz, |
c906108c SS |
1768 | symbol->n_type, symbol->n_sclass, |
1769 | 0, symbol->n_numaux, main_aux); | |
1770 | ||
1771 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1772 | } | |
1773 | ||
581e13c1 | 1774 | /* Support for line number handling. */ |
c906108c SS |
1775 | |
1776 | /* This function is called for every section; it finds the outer limits | |
1777 | * of the line table (minimum and maximum file offset) so that the | |
1778 | * mainline code can read the whole thing for efficiency. | |
1779 | */ | |
1780 | static void | |
7be0c536 | 1781 | find_linenos (struct bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
1782 | { |
1783 | struct coff_symfile_info *info; | |
1784 | int size, count; | |
1785 | file_ptr offset, maxoff; | |
1786 | ||
1787 | count = asect->lineno_count; | |
1788 | ||
7ecb6532 | 1789 | if (strcmp (asect->name, ".text") != 0 || count == 0) |
c906108c SS |
1790 | return; |
1791 | ||
1792 | size = count * coff_data (abfd)->local_linesz; | |
c5aa993b | 1793 | info = (struct coff_symfile_info *) vpinfo; |
c906108c SS |
1794 | offset = asect->line_filepos; |
1795 | maxoff = offset + size; | |
1796 | ||
1797 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1798 | info->min_lineno_offset = offset; | |
1799 | ||
1800 | if (maxoff > info->max_lineno_offset) | |
1801 | info->max_lineno_offset = maxoff; | |
1802 | } | |
1803 | \f | |
c906108c | 1804 | static void |
5c80ed9d | 1805 | xcoff_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst) |
c906108c SS |
1806 | { |
1807 | struct cleanup *old_chain; | |
1808 | int i; | |
c5aa993b | 1809 | |
c906108c SS |
1810 | if (!pst) |
1811 | return; | |
1812 | ||
1813 | if (pst->readin) | |
1814 | { | |
1815 | fprintf_unfiltered | |
1816 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1817 | pst->filename); | |
1818 | return; | |
1819 | } | |
1820 | ||
581e13c1 | 1821 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
1822 | for (i = 0; i < pst->number_of_dependencies; i++) |
1823 | if (!pst->dependencies[i]->readin) | |
1824 | { | |
1825 | /* Inform about additional files that need to be read in. */ | |
1826 | if (info_verbose) | |
1827 | { | |
1828 | fputs_filtered (" ", gdb_stdout); | |
1829 | wrap_here (""); | |
1830 | fputs_filtered ("and ", gdb_stdout); | |
1831 | wrap_here (""); | |
1832 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1833 | wrap_here (""); /* Flush output */ |
c906108c SS |
1834 | gdb_flush (gdb_stdout); |
1835 | } | |
5c80ed9d | 1836 | xcoff_psymtab_to_symtab_1 (objfile, pst->dependencies[i]); |
c906108c SS |
1837 | } |
1838 | ||
c5aa993b | 1839 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0) |
c906108c SS |
1840 | { |
1841 | /* Init stuff necessary for reading in symbols. */ | |
1842 | stabsread_init (); | |
1843 | buildsym_init (); | |
a0b3c4fd | 1844 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c | 1845 | |
5c80ed9d | 1846 | read_xcoff_symtab (objfile, pst); |
c906108c SS |
1847 | |
1848 | do_cleanups (old_chain); | |
1849 | } | |
1850 | ||
1851 | pst->readin = 1; | |
1852 | } | |
1853 | ||
c906108c | 1854 | /* Read in all of the symbols for a given psymtab for real. |
257e7a09 | 1855 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
1856 | |
1857 | static void | |
257e7a09 | 1858 | xcoff_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 1859 | { |
257e7a09 | 1860 | if (self->readin) |
c906108c SS |
1861 | { |
1862 | fprintf_unfiltered | |
1863 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
257e7a09 | 1864 | self->filename); |
c906108c SS |
1865 | return; |
1866 | } | |
1867 | ||
257e7a09 YQ |
1868 | if (((struct symloc *) self->read_symtab_private)->numsyms != 0 |
1869 | || self->number_of_dependencies) | |
c906108c SS |
1870 | { |
1871 | /* Print the message now, before reading the string table, | |
c5aa993b | 1872 | to avoid disconcerting pauses. */ |
c906108c SS |
1873 | if (info_verbose) |
1874 | { | |
257e7a09 | 1875 | printf_filtered ("Reading in symbols for %s...", self->filename); |
c906108c SS |
1876 | gdb_flush (gdb_stdout); |
1877 | } | |
1878 | ||
c906108c SS |
1879 | next_symbol_text_func = xcoff_next_symbol_text; |
1880 | ||
257e7a09 | 1881 | xcoff_psymtab_to_symtab_1 (objfile, self); |
c906108c SS |
1882 | |
1883 | /* Match with global symbols. This only needs to be done once, | |
1884 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 1885 | scan_file_globals (objfile); |
c906108c SS |
1886 | |
1887 | /* Finish up the debug error message. */ | |
1888 | if (info_verbose) | |
1889 | printf_filtered ("done.\n"); | |
1890 | } | |
1891 | } | |
1892 | \f | |
1893 | static void | |
fba45db2 | 1894 | xcoff_new_init (struct objfile *objfile) |
c906108c SS |
1895 | { |
1896 | stabsread_new_init (); | |
1897 | buildsym_new_init (); | |
1898 | } | |
1899 | ||
1900 | /* Do initialization in preparation for reading symbols from OBJFILE. | |
c5aa993b | 1901 | |
c906108c SS |
1902 | We will only be called if this is an XCOFF or XCOFF-like file. |
1903 | BFD handles figuring out the format of the file, and code in symfile.c | |
1904 | uses BFD's determination to vector to us. */ | |
1905 | ||
1906 | static void | |
fba45db2 | 1907 | xcoff_symfile_init (struct objfile *objfile) |
c906108c | 1908 | { |
b8b98ad1 TT |
1909 | struct coff_symfile_info *xcoff; |
1910 | ||
581e13c1 | 1911 | /* Allocate struct to keep track of the symfile. */ |
b8b98ad1 TT |
1912 | xcoff = XNEW (struct coff_symfile_info); |
1913 | set_objfile_data (objfile, xcoff_objfile_data_key, xcoff); | |
c906108c SS |
1914 | |
1915 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1916 | find this causes a significant slowdown in gdb then we could | |
1917 | set it in the debug symbol readers only when necessary. */ | |
1918 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
1919 | } |
1920 | ||
1921 | /* Perform any local cleanups required when we are done with a particular | |
1922 | objfile. I.E, we are in the process of discarding all symbol information | |
1923 | for an objfile, freeing up all memory held for it, and unlinking the | |
581e13c1 | 1924 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
1925 | |
1926 | static void | |
fba45db2 | 1927 | xcoff_symfile_finish (struct objfile *objfile) |
c906108c | 1928 | { |
c906108c SS |
1929 | /* Start with a fresh include table for the next objfile. */ |
1930 | if (inclTable) | |
1931 | { | |
b8c9b27d | 1932 | xfree (inclTable); |
c906108c SS |
1933 | inclTable = NULL; |
1934 | } | |
1935 | inclIndx = inclLength = inclDepth = 0; | |
316a8b21 TG |
1936 | |
1937 | dwarf2_free_objfile (objfile); | |
c906108c SS |
1938 | } |
1939 | ||
1940 | ||
1941 | static void | |
fba45db2 | 1942 | init_stringtab (bfd *abfd, file_ptr offset, struct objfile *objfile) |
c906108c SS |
1943 | { |
1944 | long length; | |
1945 | int val; | |
1946 | unsigned char lengthbuf[4]; | |
1947 | char *strtbl; | |
b8b98ad1 | 1948 | struct coff_symfile_info *xcoff = XCOFF_DATA (objfile); |
c906108c | 1949 | |
b8b98ad1 | 1950 | xcoff->strtbl = NULL; |
c906108c SS |
1951 | |
1952 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) | |
8a3fe4f8 | 1953 | error (_("cannot seek to string table in %s: %s"), |
c906108c SS |
1954 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1955 | ||
3a42e9d0 | 1956 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c SS |
1957 | length = bfd_h_get_32 (abfd, lengthbuf); |
1958 | ||
1959 | /* If no string table is needed, then the file may end immediately | |
1960 | after the symbols. Just return with `strtbl' set to NULL. */ | |
1961 | ||
1962 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1963 | return; | |
1964 | ||
581e13c1 MS |
1965 | /* Allocate string table from objfile_obstack. We will need this table |
1966 | as long as we have its symbol table around. */ | |
c906108c | 1967 | |
4a146b47 | 1968 | strtbl = (char *) obstack_alloc (&objfile->objfile_obstack, length); |
b8b98ad1 | 1969 | xcoff->strtbl = strtbl; |
c906108c SS |
1970 | |
1971 | /* Copy length buffer, the first byte is usually zero and is | |
1972 | used for stabs with a name length of zero. */ | |
1973 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
1974 | if (length == sizeof lengthbuf) | |
1975 | return; | |
1976 | ||
3a42e9d0 | 1977 | val = bfd_bread (strtbl + sizeof lengthbuf, length - sizeof lengthbuf, abfd); |
c906108c SS |
1978 | |
1979 | if (val != length - sizeof lengthbuf) | |
8a3fe4f8 | 1980 | error (_("cannot read string table from %s: %s"), |
c906108c SS |
1981 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1982 | if (strtbl[length - 1] != '\0') | |
3e43a32a MS |
1983 | error (_("bad symbol file: string table " |
1984 | "does not end with null character")); | |
c906108c SS |
1985 | |
1986 | return; | |
1987 | } | |
1988 | \f | |
1989 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
1990 | have seen one, it is the offset in the line numbers of the line numbers | |
1991 | for the psymtab. */ | |
1992 | static unsigned int first_fun_line_offset; | |
1993 | ||
c906108c SS |
1994 | /* Allocate and partially fill a partial symtab. It will be |
1995 | completely filled at the end of the symbol list. | |
1996 | ||
1997 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1998 | is the address relative to which its symbols are (incremental) or 0 | |
581e13c1 | 1999 | (normal). */ |
c906108c SS |
2000 | |
2001 | static struct partial_symtab * | |
0d5cff50 DE |
2002 | xcoff_start_psymtab (struct objfile *objfile, |
2003 | const char *filename, int first_symnum, | |
fba45db2 KB |
2004 | struct partial_symbol **global_syms, |
2005 | struct partial_symbol **static_syms) | |
c906108c SS |
2006 | { |
2007 | struct partial_symtab *result = | |
a109c7c1 MS |
2008 | start_psymtab_common (objfile, objfile->section_offsets, |
2009 | filename, | |
2010 | /* We fill in textlow later. */ | |
2011 | 0, | |
2012 | global_syms, static_syms); | |
c906108c | 2013 | |
e38df1d0 TT |
2014 | result->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2015 | sizeof (struct symloc)); | |
c5aa993b | 2016 | ((struct symloc *) result->read_symtab_private)->first_symnum = first_symnum; |
257e7a09 | 2017 | result->read_symtab = xcoff_read_symtab; |
c906108c | 2018 | |
581e13c1 | 2019 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
2020 | psymtab_language = deduce_language_from_filename (filename); |
2021 | ||
2022 | return result; | |
2023 | } | |
2024 | ||
581e13c1 | 2025 | /* Close off the current usage of PST. |
c906108c SS |
2026 | Returns PST, or NULL if the partial symtab was empty and thrown away. |
2027 | ||
2028 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). | |
2029 | ||
2030 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES | |
2031 | are the information for includes and dependencies. */ | |
2032 | ||
2033 | static struct partial_symtab * | |
5c80ed9d TT |
2034 | xcoff_end_psymtab (struct objfile *objfile, struct partial_symtab *pst, |
2035 | const char **include_list, int num_includes, | |
2036 | int capping_symbol_number, | |
fba45db2 KB |
2037 | struct partial_symtab **dependency_list, |
2038 | int number_dependencies, int textlow_not_set) | |
c906108c SS |
2039 | { |
2040 | int i; | |
c906108c SS |
2041 | |
2042 | if (capping_symbol_number != -1) | |
c5aa993b | 2043 | ((struct symloc *) pst->read_symtab_private)->numsyms = |
c906108c | 2044 | capping_symbol_number |
c5aa993b JM |
2045 | - ((struct symloc *) pst->read_symtab_private)->first_symnum; |
2046 | ((struct symloc *) pst->read_symtab_private)->lineno_off = | |
c906108c SS |
2047 | first_fun_line_offset; |
2048 | first_fun_line_offset = 0; | |
3e43a32a MS |
2049 | pst->n_global_syms = objfile->global_psymbols.next |
2050 | - (objfile->global_psymbols.list + pst->globals_offset); | |
2051 | pst->n_static_syms = objfile->static_psymbols.next | |
2052 | - (objfile->static_psymbols.list + pst->statics_offset); | |
c906108c SS |
2053 | |
2054 | pst->number_of_dependencies = number_dependencies; | |
2055 | if (number_dependencies) | |
2056 | { | |
2057 | pst->dependencies = (struct partial_symtab **) | |
8b92e4d5 | 2058 | obstack_alloc (&objfile->objfile_obstack, |
c5aa993b | 2059 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c | 2060 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2061 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2062 | } |
2063 | else | |
2064 | pst->dependencies = 0; | |
2065 | ||
2066 | for (i = 0; i < num_includes; i++) | |
2067 | { | |
2068 | struct partial_symtab *subpst = | |
a109c7c1 | 2069 | allocate_psymtab (include_list[i], objfile); |
c906108c SS |
2070 | |
2071 | subpst->section_offsets = pst->section_offsets; | |
e38df1d0 TT |
2072 | subpst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2073 | sizeof (struct symloc)); | |
c5aa993b JM |
2074 | ((struct symloc *) subpst->read_symtab_private)->first_symnum = 0; |
2075 | ((struct symloc *) subpst->read_symtab_private)->numsyms = 0; | |
c906108c SS |
2076 | subpst->textlow = 0; |
2077 | subpst->texthigh = 0; | |
2078 | ||
2079 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2080 | shared by the entire set of include files. FIXME-someday. */ |
c906108c | 2081 | subpst->dependencies = (struct partial_symtab **) |
8b92e4d5 | 2082 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2083 | sizeof (struct partial_symtab *)); |
2084 | subpst->dependencies[0] = pst; | |
2085 | subpst->number_of_dependencies = 1; | |
2086 | ||
2087 | subpst->globals_offset = | |
2088 | subpst->n_global_syms = | |
c5aa993b JM |
2089 | subpst->statics_offset = |
2090 | subpst->n_static_syms = 0; | |
c906108c SS |
2091 | |
2092 | subpst->readin = 0; | |
2093 | subpst->symtab = 0; | |
2094 | subpst->read_symtab = pst->read_symtab; | |
2095 | } | |
2096 | ||
5c80ed9d | 2097 | sort_pst_symbols (objfile, pst); |
c906108c | 2098 | |
c906108c SS |
2099 | if (num_includes == 0 |
2100 | && number_dependencies == 0 | |
2101 | && pst->n_global_syms == 0 | |
2102 | && pst->n_static_syms == 0) | |
2103 | { | |
2104 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2105 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2106 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b | 2107 | any symbols in them. There can be a lot of them. */ |
c906108c | 2108 | |
5c80ed9d | 2109 | discard_psymtab (objfile, pst); |
c906108c SS |
2110 | |
2111 | /* Indicate that psymtab was thrown away. */ | |
c5aa993b | 2112 | pst = (struct partial_symtab *) NULL; |
c906108c SS |
2113 | } |
2114 | return pst; | |
2115 | } | |
2116 | ||
c906108c SS |
2117 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in |
2118 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2119 | the symbol and its auxents. */ | |
2120 | ||
2121 | static void | |
fba45db2 | 2122 | swap_sym (struct internal_syment *symbol, union internal_auxent *aux, |
0d5cff50 | 2123 | const char **name, char **raw, unsigned int *symnump, |
fba45db2 | 2124 | struct objfile *objfile) |
c906108c SS |
2125 | { |
2126 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2127 | if (symbol->n_zeroes) | |
2128 | { | |
2129 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
c5aa993b | 2130 | '\0'-terminated. */ |
c906108c SS |
2131 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') |
2132 | { | |
2133 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2134 | into the minimal symbols. */ | |
2135 | char *p; | |
a109c7c1 | 2136 | |
8b92e4d5 | 2137 | p = obstack_alloc (&objfile->objfile_obstack, E_SYMNMLEN + 1); |
c906108c SS |
2138 | strncpy (p, symbol->n_name, E_SYMNMLEN); |
2139 | p[E_SYMNMLEN] = '\0'; | |
2140 | *name = p; | |
2141 | } | |
2142 | else | |
2143 | /* Point to the unswapped name as that persists as long as the | |
2144 | objfile does. */ | |
c5aa993b | 2145 | *name = ((struct external_syment *) *raw)->e.e_name; |
c906108c SS |
2146 | } |
2147 | else if (symbol->n_sclass & 0x80) | |
2148 | { | |
b8b98ad1 | 2149 | *name = XCOFF_DATA (objfile)->debugsec + symbol->n_offset; |
c906108c SS |
2150 | } |
2151 | else | |
2152 | { | |
b8b98ad1 | 2153 | *name = XCOFF_DATA (objfile)->strtbl + symbol->n_offset; |
c906108c SS |
2154 | } |
2155 | ++*symnump; | |
2156 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2157 | if (symbol->n_numaux > 0) | |
2158 | { | |
2159 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2160 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2161 | ||
2162 | *symnump += symbol->n_numaux; | |
2163 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2164 | } | |
2165 | } | |
2166 | ||
23136709 KB |
2167 | static void |
2168 | function_outside_compilation_unit_complaint (const char *arg1) | |
2169 | { | |
2170 | complaint (&symfile_complaints, | |
3e43a32a MS |
2171 | _("function `%s' appears to be defined " |
2172 | "outside of all compilation units"), | |
23136709 KB |
2173 | arg1); |
2174 | } | |
2175 | ||
c906108c | 2176 | static void |
fba45db2 | 2177 | scan_xcoff_symtab (struct objfile *objfile) |
c906108c | 2178 | { |
40c58d95 | 2179 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
581e13c1 | 2180 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
0d5cff50 | 2181 | const char *filestring = NULL; |
c906108c | 2182 | |
0d5cff50 | 2183 | const char *namestring; |
c906108c SS |
2184 | int past_first_source_file = 0; |
2185 | bfd *abfd; | |
2186 | asection *bfd_sect; | |
2187 | unsigned int nsyms; | |
2188 | ||
2189 | /* Current partial symtab */ | |
2190 | struct partial_symtab *pst; | |
2191 | ||
581e13c1 | 2192 | /* List of current psymtab's include files. */ |
0d5cff50 | 2193 | const char **psymtab_include_list; |
c906108c SS |
2194 | int includes_allocated; |
2195 | int includes_used; | |
2196 | ||
581e13c1 | 2197 | /* Index within current psymtab dependency list. */ |
c906108c SS |
2198 | struct partial_symtab **dependency_list; |
2199 | int dependencies_used, dependencies_allocated; | |
2200 | ||
2201 | char *sraw_symbol; | |
2202 | struct internal_syment symbol; | |
96baa820 | 2203 | union internal_auxent main_aux[5]; |
c906108c SS |
2204 | unsigned int ssymnum; |
2205 | ||
0d5cff50 | 2206 | const char *last_csect_name = NULL; /* Last seen csect's name and value. */ |
c906108c SS |
2207 | CORE_ADDR last_csect_val = 0; |
2208 | int last_csect_sec = 0; | |
581e13c1 | 2209 | int misc_func_recorded = 0; /* true if any misc. function. */ |
c906108c SS |
2210 | int textlow_not_set = 1; |
2211 | ||
2212 | pst = (struct partial_symtab *) 0; | |
2213 | ||
2214 | includes_allocated = 30; | |
2215 | includes_used = 0; | |
0d5cff50 DE |
2216 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2217 | sizeof (const char *)); | |
c906108c SS |
2218 | |
2219 | dependencies_allocated = 30; | |
2220 | dependencies_used = 0; | |
2221 | dependency_list = | |
2222 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2223 | sizeof (struct partial_symtab *)); | |
2224 | ||
46212e0b | 2225 | set_last_source_file (NULL); |
c906108c SS |
2226 | |
2227 | abfd = objfile->obfd; | |
13c763f4 | 2228 | next_symbol_text_func = xcoff_next_symbol_text; |
c906108c | 2229 | |
b8b98ad1 TT |
2230 | sraw_symbol = XCOFF_DATA (objfile)->symtbl; |
2231 | nsyms = XCOFF_DATA (objfile)->symtbl_num_syms; | |
c906108c SS |
2232 | ssymnum = 0; |
2233 | while (ssymnum < nsyms) | |
2234 | { | |
7a78ae4e | 2235 | int sclass; |
c906108c SS |
2236 | |
2237 | QUIT; | |
2238 | ||
7a78ae4e ND |
2239 | bfd_coff_swap_sym_in (abfd, sraw_symbol, &symbol); |
2240 | sclass = symbol.n_sclass; | |
2241 | ||
c906108c SS |
2242 | switch (sclass) |
2243 | { | |
2244 | case C_EXT: | |
2245 | case C_HIDEXT: | |
2246 | { | |
2247 | /* The CSECT auxent--always the last auxent. */ | |
2248 | union internal_auxent csect_aux; | |
2249 | unsigned int symnum_before = ssymnum; | |
2250 | ||
96baa820 | 2251 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2252 | &ssymnum, objfile); |
2253 | if (symbol.n_numaux > 1) | |
2254 | { | |
2255 | bfd_coff_swap_aux_in | |
2256 | (objfile->obfd, | |
c5aa993b | 2257 | sraw_symbol - coff_data (abfd)->local_symesz, |
c906108c SS |
2258 | symbol.n_type, |
2259 | symbol.n_sclass, | |
2260 | symbol.n_numaux - 1, | |
2261 | symbol.n_numaux, | |
2262 | &csect_aux); | |
2263 | } | |
2264 | else | |
96baa820 | 2265 | csect_aux = main_aux[0]; |
c906108c | 2266 | |
977adac5 ND |
2267 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2268 | if (namestring[0] == '$' | |
c906108c SS |
2269 | || (namestring[0] == '.' && namestring[1] == '$')) |
2270 | break; | |
2271 | ||
2272 | switch (csect_aux.x_csect.x_smtyp & 0x7) | |
2273 | { | |
2274 | case XTY_SD: | |
2275 | switch (csect_aux.x_csect.x_smclas) | |
2276 | { | |
2277 | case XMC_PR: | |
2278 | if (last_csect_name) | |
2279 | { | |
2280 | /* If no misc. function recorded in the last | |
581e13c1 | 2281 | seen csect, enter it as a function. This |
c906108c SS |
2282 | will take care of functions like strcmp() |
2283 | compiled by xlc. */ | |
2284 | ||
2285 | if (!misc_func_recorded) | |
2286 | { | |
ec92004f | 2287 | record_minimal_symbol |
c906108c | 2288 | (last_csect_name, last_csect_val, |
ec92004f JB |
2289 | mst_text, last_csect_sec, objfile); |
2290 | misc_func_recorded = 1; | |
c906108c SS |
2291 | } |
2292 | ||
2293 | if (pst != NULL) | |
2294 | { | |
2295 | /* We have to allocate one psymtab for | |
2296 | each program csect, because their text | |
2297 | sections need not be adjacent. */ | |
2298 | xcoff_end_psymtab | |
5c80ed9d TT |
2299 | (objfile, pst, psymtab_include_list, |
2300 | includes_used, symnum_before, dependency_list, | |
c906108c SS |
2301 | dependencies_used, textlow_not_set); |
2302 | includes_used = 0; | |
2303 | dependencies_used = 0; | |
2304 | /* Give all psymtabs for this source file the same | |
2305 | name. */ | |
2306 | pst = xcoff_start_psymtab | |
d4f3574e | 2307 | (objfile, |
c906108c SS |
2308 | filestring, |
2309 | symnum_before, | |
2310 | objfile->global_psymbols.next, | |
2311 | objfile->static_psymbols.next); | |
2312 | } | |
2313 | } | |
977adac5 ND |
2314 | /* Activate the misc_func_recorded mechanism for |
2315 | compiler- and linker-generated CSECTs like ".strcmp" | |
2316 | and "@FIX1". */ | |
2317 | if (namestring && (namestring[0] == '.' | |
2318 | || namestring[0] == '@')) | |
c906108c SS |
2319 | { |
2320 | last_csect_name = namestring; | |
2321 | last_csect_val = symbol.n_value; | |
ec92004f | 2322 | last_csect_sec = symbol.n_scnum; |
c906108c SS |
2323 | } |
2324 | if (pst != NULL) | |
2325 | { | |
2326 | CORE_ADDR highval = | |
a109c7c1 MS |
2327 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; |
2328 | ||
c906108c SS |
2329 | if (highval > pst->texthigh) |
2330 | pst->texthigh = highval; | |
2331 | if (pst->textlow == 0 || symbol.n_value < pst->textlow) | |
2332 | pst->textlow = symbol.n_value; | |
2333 | } | |
2334 | misc_func_recorded = 0; | |
2335 | break; | |
2336 | ||
2337 | case XMC_RW: | |
6904b546 | 2338 | case XMC_TD: |
c906108c SS |
2339 | /* Data variables are recorded in the minimal symbol |
2340 | table, except for section symbols. */ | |
2341 | if (*namestring != '.') | |
2342 | prim_record_minimal_symbol_and_info | |
2343 | (namestring, symbol.n_value, | |
2344 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
b887350f | 2345 | secnum_to_section (symbol.n_scnum, objfile), |
ec92004f | 2346 | objfile); |
c906108c SS |
2347 | break; |
2348 | ||
2349 | case XMC_TC0: | |
2350 | if (toc_offset) | |
8a3fe4f8 | 2351 | warning (_("More than one XMC_TC0 symbol found.")); |
c906108c SS |
2352 | toc_offset = symbol.n_value; |
2353 | ||
3e43a32a MS |
2354 | /* Make TOC offset relative to start address of |
2355 | section. */ | |
c906108c SS |
2356 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); |
2357 | if (bfd_sect) | |
2358 | toc_offset -= bfd_section_vma (objfile->obfd, bfd_sect); | |
2359 | break; | |
2360 | ||
2361 | case XMC_TC: | |
2362 | /* These symbols tell us where the TOC entry for a | |
2363 | variable is, not the variable itself. */ | |
2364 | break; | |
2365 | ||
2366 | default: | |
2367 | break; | |
2368 | } | |
2369 | break; | |
2370 | ||
2371 | case XTY_LD: | |
2372 | switch (csect_aux.x_csect.x_smclas) | |
2373 | { | |
2374 | case XMC_PR: | |
2375 | /* A function entry point. */ | |
2376 | ||
2377 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2378 | first_fun_line_offset = | |
96baa820 | 2379 | main_aux[0].x_sym.x_fcnary.x_fcn.x_lnnoptr; |
ec92004f JB |
2380 | { |
2381 | record_minimal_symbol | |
2382 | (namestring, symbol.n_value, | |
2383 | sclass == C_HIDEXT ? mst_file_text : mst_text, | |
2384 | symbol.n_scnum, objfile); | |
2385 | misc_func_recorded = 1; | |
2386 | } | |
c906108c SS |
2387 | break; |
2388 | ||
2389 | case XMC_GL: | |
2390 | /* shared library function trampoline code entry | |
581e13c1 | 2391 | point. */ |
c906108c SS |
2392 | |
2393 | /* record trampoline code entries as | |
2394 | mst_solib_trampoline symbol. When we lookup mst | |
2395 | symbols, we will choose mst_text over | |
581e13c1 | 2396 | mst_solib_trampoline. */ |
ec92004f | 2397 | record_minimal_symbol |
c906108c | 2398 | (namestring, symbol.n_value, |
ec92004f JB |
2399 | mst_solib_trampoline, symbol.n_scnum, objfile); |
2400 | misc_func_recorded = 1; | |
c906108c SS |
2401 | break; |
2402 | ||
2403 | case XMC_DS: | |
2404 | /* The symbols often have the same names as | |
2405 | debug symbols for functions, and confuse | |
2406 | lookup_symbol. */ | |
2407 | break; | |
2408 | ||
2409 | default: | |
2410 | ||
2411 | /* xlc puts each variable in a separate csect, | |
2412 | so we get an XTY_SD for each variable. But | |
2413 | gcc puts several variables in a csect, so | |
2414 | that each variable only gets an XTY_LD. We | |
2415 | still need to record them. This will | |
2416 | typically be XMC_RW; I suspect XMC_RO and | |
2417 | XMC_BS might be possible too. */ | |
2418 | if (*namestring != '.') | |
2419 | prim_record_minimal_symbol_and_info | |
2420 | (namestring, symbol.n_value, | |
2421 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
b887350f | 2422 | secnum_to_section (symbol.n_scnum, objfile), |
ec92004f | 2423 | objfile); |
c906108c SS |
2424 | break; |
2425 | } | |
2426 | break; | |
2427 | ||
2428 | case XTY_CM: | |
2429 | switch (csect_aux.x_csect.x_smclas) | |
2430 | { | |
2431 | case XMC_RW: | |
2432 | case XMC_BS: | |
2433 | /* Common variables are recorded in the minimal symbol | |
2434 | table, except for section symbols. */ | |
2435 | if (*namestring != '.') | |
2436 | prim_record_minimal_symbol_and_info | |
2437 | (namestring, symbol.n_value, | |
2438 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, | |
b887350f | 2439 | secnum_to_section (symbol.n_scnum, objfile), |
ec92004f | 2440 | objfile); |
c906108c SS |
2441 | break; |
2442 | } | |
2443 | break; | |
2444 | ||
2445 | default: | |
2446 | break; | |
2447 | } | |
2448 | } | |
2449 | break; | |
2450 | case C_FILE: | |
2451 | { | |
2452 | unsigned int symnum_before; | |
2453 | ||
2454 | symnum_before = ssymnum; | |
96baa820 | 2455 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2456 | &ssymnum, objfile); |
2457 | ||
2458 | /* See if the last csect needs to be recorded. */ | |
2459 | ||
2460 | if (last_csect_name && !misc_func_recorded) | |
2461 | { | |
c906108c SS |
2462 | /* If no misc. function recorded in the last seen csect, enter |
2463 | it as a function. This will take care of functions like | |
2464 | strcmp() compiled by xlc. */ | |
2465 | ||
ec92004f JB |
2466 | record_minimal_symbol (last_csect_name, last_csect_val, |
2467 | mst_text, last_csect_sec, objfile); | |
2468 | misc_func_recorded = 1; | |
c906108c SS |
2469 | } |
2470 | ||
2471 | if (pst) | |
2472 | { | |
5c80ed9d TT |
2473 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, |
2474 | includes_used, symnum_before, | |
2475 | dependency_list, dependencies_used, | |
2476 | textlow_not_set); | |
c906108c SS |
2477 | includes_used = 0; |
2478 | dependencies_used = 0; | |
2479 | } | |
2480 | first_fun_line_offset = 0; | |
2481 | ||
2482 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2483 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2484 | do things the standard COFF way and put it in the auxent. | |
2485 | We use the auxent if the symbol is ".file" and an auxent | |
2486 | exists, otherwise use the symbol itself. */ | |
2487 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2488 | { | |
96baa820 | 2489 | filestring = coff_getfilename (&main_aux[0], objfile); |
c906108c SS |
2490 | } |
2491 | else | |
2492 | filestring = namestring; | |
2493 | ||
d4f3574e | 2494 | pst = xcoff_start_psymtab (objfile, |
c906108c SS |
2495 | filestring, |
2496 | symnum_before, | |
2497 | objfile->global_psymbols.next, | |
2498 | objfile->static_psymbols.next); | |
2499 | last_csect_name = NULL; | |
2500 | } | |
2501 | break; | |
2502 | ||
2503 | default: | |
2504 | { | |
23136709 | 2505 | complaint (&symfile_complaints, |
3e43a32a MS |
2506 | _("Storage class %d not recognized during scan"), |
2507 | sclass); | |
c906108c SS |
2508 | } |
2509 | /* FALLTHROUGH */ | |
2510 | ||
2511 | /* C_FCN is .bf and .ef symbols. I think it is sufficient | |
2512 | to handle only the C_FUN and C_EXT. */ | |
2513 | case C_FCN: | |
2514 | ||
2515 | case C_BSTAT: | |
2516 | case C_ESTAT: | |
2517 | case C_ARG: | |
2518 | case C_REGPARM: | |
2519 | case C_REG: | |
2520 | case C_TPDEF: | |
2521 | case C_STRTAG: | |
2522 | case C_UNTAG: | |
2523 | case C_ENTAG: | |
2524 | case C_LABEL: | |
2525 | case C_NULL: | |
2526 | ||
2527 | /* C_EINCL means we are switching back to the main file. But there | |
2528 | is no reason to care; the only thing we want to know about | |
2529 | includes is the names of all the included (.h) files. */ | |
2530 | case C_EINCL: | |
2531 | ||
2532 | case C_BLOCK: | |
2533 | ||
2534 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2535 | used instead. */ | |
2536 | case C_STAT: | |
2537 | ||
2538 | /* I don't think the name of the common block (as opposed to the | |
2539 | variables within it) is something which is user visible | |
2540 | currently. */ | |
2541 | case C_BCOMM: | |
2542 | case C_ECOMM: | |
2543 | ||
2544 | case C_PSYM: | |
2545 | case C_RPSYM: | |
2546 | ||
2547 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2548 | so C_LSYM would appear to be only for locals. */ | |
2549 | case C_LSYM: | |
2550 | ||
2551 | case C_AUTO: | |
2552 | case C_RSYM: | |
2553 | { | |
2554 | /* We probably could save a few instructions by assuming that | |
2555 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
7a78ae4e | 2556 | int naux1 = symbol.n_numaux + 1; |
a109c7c1 | 2557 | |
c906108c | 2558 | ssymnum += naux1; |
7a78ae4e | 2559 | sraw_symbol += bfd_coff_symesz (abfd) * naux1; |
c906108c SS |
2560 | } |
2561 | break; | |
2562 | ||
2563 | case C_BINCL: | |
d5d0a62f | 2564 | { |
581e13c1 | 2565 | /* Mark down an include file in the current psymtab. */ |
d5d0a62f | 2566 | enum language tmp_language; |
a109c7c1 | 2567 | |
d5d0a62f EZ |
2568 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2569 | &ssymnum, objfile); | |
2570 | ||
2571 | tmp_language = deduce_language_from_filename (namestring); | |
2572 | ||
2573 | /* Only change the psymtab's language if we've learned | |
2574 | something useful (eg. tmp_language is not language_unknown). | |
2575 | In addition, to match what start_subfile does, never change | |
2576 | from C++ to C. */ | |
2577 | if (tmp_language != language_unknown | |
2578 | && (tmp_language != language_c | |
2579 | || psymtab_language != language_cplus)) | |
2580 | psymtab_language = tmp_language; | |
2581 | ||
2582 | /* In C++, one may expect the same filename to come round many | |
2583 | times, when code is coming alternately from the main file | |
581e13c1 | 2584 | and from inline functions in other files. So I check to see |
d5d0a62f EZ |
2585 | if this is a file we've seen before -- either the main |
2586 | source file, or a previously included file. | |
2587 | ||
2588 | This seems to be a lot of time to be spending on N_SOL, but | |
2589 | things like "break c-exp.y:435" need to work (I | |
2590 | suppose the psymtab_include_list could be hashed or put | |
2591 | in a binary tree, if profiling shows this is a major hog). */ | |
7ecb6532 | 2592 | if (pst && strcmp (namestring, pst->filename) == 0) |
d5d0a62f | 2593 | continue; |
a109c7c1 | 2594 | |
d5d0a62f | 2595 | { |
aa1ee363 | 2596 | int i; |
a109c7c1 | 2597 | |
d5d0a62f | 2598 | for (i = 0; i < includes_used; i++) |
7ecb6532 | 2599 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
d5d0a62f EZ |
2600 | { |
2601 | i = -1; | |
2602 | break; | |
2603 | } | |
2604 | if (i == -1) | |
2605 | continue; | |
2606 | } | |
2607 | psymtab_include_list[includes_used++] = namestring; | |
2608 | if (includes_used >= includes_allocated) | |
2609 | { | |
0d5cff50 | 2610 | const char **orig = psymtab_include_list; |
c906108c | 2611 | |
0d5cff50 | 2612 | psymtab_include_list = (const char **) |
d5d0a62f | 2613 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 2614 | sizeof (const char *)); |
4efb68b1 | 2615 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 2616 | includes_used * sizeof (const char *)); |
d5d0a62f EZ |
2617 | } |
2618 | continue; | |
2619 | } | |
c906108c SS |
2620 | case C_FUN: |
2621 | /* The value of the C_FUN is not the address of the function (it | |
2622 | appears to be the address before linking), but as long as it | |
2623 | is smaller than the actual address, then find_pc_partial_function | |
2624 | will use the minimal symbols instead. I hope. */ | |
2625 | ||
2626 | case C_GSYM: | |
2627 | case C_ECOML: | |
2628 | case C_DECL: | |
2629 | case C_STSYM: | |
d5d0a62f | 2630 | { |
d5d0a62f | 2631 | char *p; |
a109c7c1 | 2632 | |
d5d0a62f EZ |
2633 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2634 | &ssymnum, objfile); | |
2635 | ||
ed4b0e6a | 2636 | p = strchr (namestring, ':'); |
d5d0a62f EZ |
2637 | if (!p) |
2638 | continue; /* Not a debugging symbol. */ | |
2639 | ||
2640 | /* Main processing section for debugging symbols which | |
2641 | the initial read through the symbol tables needs to worry | |
2642 | about. If we reach this point, the symbol which we are | |
2643 | considering is definitely one we are interested in. | |
2644 | p must also contain the (valid) index into the namestring | |
2645 | which indicates the debugging type symbol. */ | |
2646 | ||
2647 | switch (p[1]) | |
2648 | { | |
2649 | case 'S': | |
3e43a32a MS |
2650 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2651 | SECT_OFF_DATA (objfile)); | |
149ad273 | 2652 | |
5e2b427d | 2653 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 2654 | namestring = gdbarch_static_transform_name |
5e2b427d | 2655 | (gdbarch, namestring); |
149ad273 | 2656 | |
04a679b8 | 2657 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2658 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f EZ |
2659 | &objfile->static_psymbols, |
2660 | 0, symbol.n_value, | |
2661 | psymtab_language, objfile); | |
2662 | continue; | |
2663 | ||
2664 | case 'G': | |
3e43a32a MS |
2665 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2666 | SECT_OFF_DATA (objfile)); | |
d5d0a62f | 2667 | /* The addresses in these entries are reported to be |
581e13c1 | 2668 | wrong. See the code that reads 'G's for symtabs. */ |
04a679b8 | 2669 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2670 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f EZ |
2671 | &objfile->global_psymbols, |
2672 | 0, symbol.n_value, | |
2673 | psymtab_language, objfile); | |
2674 | continue; | |
2675 | ||
2676 | case 'T': | |
2677 | /* When a 'T' entry is defining an anonymous enum, it | |
2678 | may have a name which is the empty string, or a | |
2679 | single space. Since they're not really defining a | |
2680 | symbol, those shouldn't go in the partial symbol | |
2681 | table. We do pick up the elements of such enums at | |
2682 | 'check_enum:', below. */ | |
2683 | if (p >= namestring + 2 | |
2684 | || (p == namestring + 1 | |
2685 | && namestring[0] != ' ')) | |
2686 | { | |
04a679b8 | 2687 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2688 | STRUCT_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2689 | &objfile->static_psymbols, |
2690 | symbol.n_value, 0, | |
2691 | psymtab_language, objfile); | |
2692 | if (p[2] == 't') | |
2693 | { | |
2694 | /* Also a typedef with the same name. */ | |
04a679b8 | 2695 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2696 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2697 | &objfile->static_psymbols, |
2698 | symbol.n_value, 0, | |
2699 | psymtab_language, objfile); | |
2700 | p += 1; | |
2701 | } | |
d5d0a62f EZ |
2702 | } |
2703 | goto check_enum; | |
2704 | ||
2705 | case 't': | |
581e13c1 | 2706 | if (p != namestring) /* a name is there, not just :T... */ |
d5d0a62f | 2707 | { |
04a679b8 | 2708 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2709 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2710 | &objfile->static_psymbols, |
2711 | symbol.n_value, 0, | |
2712 | psymtab_language, objfile); | |
2713 | } | |
2714 | check_enum: | |
2715 | /* If this is an enumerated type, we need to | |
2716 | add all the enum constants to the partial symbol | |
2717 | table. This does not cover enums without names, e.g. | |
2718 | "enum {a, b} c;" in C, but fortunately those are | |
2719 | rare. There is no way for GDB to find those from the | |
2720 | enum type without spending too much time on it. Thus | |
2721 | to solve this problem, the compiler needs to put out the | |
2722 | enum in a nameless type. GCC2 does this. */ | |
2723 | ||
2724 | /* We are looking for something of the form | |
2725 | <name> ":" ("t" | "T") [<number> "="] "e" | |
2726 | {<constant> ":" <value> ","} ";". */ | |
2727 | ||
2728 | /* Skip over the colon and the 't' or 'T'. */ | |
2729 | p += 2; | |
2730 | /* This type may be given a number. Also, numbers can come | |
2731 | in pairs like (0,26). Skip over it. */ | |
2732 | while ((*p >= '0' && *p <= '9') | |
2733 | || *p == '(' || *p == ',' || *p == ')' | |
2734 | || *p == '=') | |
2735 | p++; | |
2736 | ||
2737 | if (*p++ == 'e') | |
2738 | { | |
3e43a32a MS |
2739 | /* The aix4 compiler emits extra crud before the |
2740 | members. */ | |
d5d0a62f EZ |
2741 | if (*p == '-') |
2742 | { | |
2743 | /* Skip over the type (?). */ | |
2744 | while (*p != ':') | |
2745 | p++; | |
2746 | ||
2747 | /* Skip over the colon. */ | |
2748 | p++; | |
2749 | } | |
2750 | ||
2751 | /* We have found an enumerated type. */ | |
2752 | /* According to comments in read_enum_type | |
2753 | a comma could end it instead of a semicolon. | |
2754 | I don't know where that happens. | |
2755 | Accept either. */ | |
2756 | while (*p && *p != ';' && *p != ',') | |
2757 | { | |
2758 | char *q; | |
2759 | ||
2760 | /* Check for and handle cretinous dbx symbol name | |
2761 | continuation! */ | |
2762 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
2763 | p = next_symbol_text (objfile); | |
2764 | ||
2765 | /* Point to the character after the name | |
2766 | of the enum constant. */ | |
2767 | for (q = p; *q && *q != ':'; q++) | |
2768 | ; | |
2769 | /* Note that the value doesn't matter for | |
2770 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 2771 | add_psymbol_to_list (p, q - p, 1, |
176620f1 | 2772 | VAR_DOMAIN, LOC_CONST, |
d5d0a62f EZ |
2773 | &objfile->static_psymbols, 0, |
2774 | 0, psymtab_language, objfile); | |
2775 | /* Point past the name. */ | |
2776 | p = q; | |
2777 | /* Skip over the value. */ | |
2778 | while (*p && *p != ',') | |
2779 | p++; | |
2780 | /* Advance past the comma. */ | |
2781 | if (*p) | |
2782 | p++; | |
2783 | } | |
2784 | } | |
2785 | continue; | |
2786 | ||
2787 | case 'c': | |
2788 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 2789 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2790 | VAR_DOMAIN, LOC_CONST, |
d5d0a62f EZ |
2791 | &objfile->static_psymbols, symbol.n_value, |
2792 | 0, psymtab_language, objfile); | |
2793 | continue; | |
2794 | ||
2795 | case 'f': | |
2796 | if (! pst) | |
2797 | { | |
2798 | int name_len = p - namestring; | |
2799 | char *name = xmalloc (name_len + 1); | |
a109c7c1 | 2800 | |
d5d0a62f EZ |
2801 | memcpy (name, namestring, name_len); |
2802 | name[name_len] = '\0'; | |
23136709 | 2803 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2804 | xfree (name); |
2805 | } | |
3e43a32a MS |
2806 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2807 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2808 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2809 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f EZ |
2810 | &objfile->static_psymbols, |
2811 | 0, symbol.n_value, | |
2812 | psymtab_language, objfile); | |
2813 | continue; | |
2814 | ||
2815 | /* Global functions were ignored here, but now they | |
2816 | are put into the global psymtab like one would expect. | |
2817 | They're also in the minimal symbol table. */ | |
2818 | case 'F': | |
2819 | if (! pst) | |
2820 | { | |
2821 | int name_len = p - namestring; | |
2822 | char *name = xmalloc (name_len + 1); | |
a109c7c1 | 2823 | |
d5d0a62f EZ |
2824 | memcpy (name, namestring, name_len); |
2825 | name[name_len] = '\0'; | |
23136709 | 2826 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2827 | xfree (name); |
2828 | } | |
9f1d5432 PH |
2829 | |
2830 | /* We need only the minimal symbols for these | |
581e13c1 | 2831 | loader-generated definitions. Keeping the global |
9f1d5432 | 2832 | symbols leads to "in psymbols but not in symbols" |
581e13c1 | 2833 | errors. */ |
9f1d5432 PH |
2834 | if (strncmp (namestring, "@FIX", 4) == 0) |
2835 | continue; | |
2836 | ||
3e43a32a MS |
2837 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2838 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2839 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2840 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f EZ |
2841 | &objfile->global_psymbols, |
2842 | 0, symbol.n_value, | |
2843 | psymtab_language, objfile); | |
2844 | continue; | |
2845 | ||
2846 | /* Two things show up here (hopefully); static symbols of | |
2847 | local scope (static used inside braces) or extensions | |
2848 | of structure symbols. We can ignore both. */ | |
2849 | case 'V': | |
2850 | case '(': | |
2851 | case '0': | |
2852 | case '1': | |
2853 | case '2': | |
2854 | case '3': | |
2855 | case '4': | |
2856 | case '5': | |
2857 | case '6': | |
2858 | case '7': | |
2859 | case '8': | |
2860 | case '9': | |
2861 | case '-': | |
3e43a32a MS |
2862 | case '#': /* For symbol identification (used in |
2863 | live ranges). */ | |
d5d0a62f EZ |
2864 | continue; |
2865 | ||
2866 | case ':': | |
2867 | /* It is a C++ nested symbol. We don't need to record it | |
2868 | (I don't think); if we try to look up foo::bar::baz, | |
2869 | then symbols for the symtab containing foo should get | |
2870 | read in, I think. */ | |
2871 | /* Someone says sun cc puts out symbols like | |
2872 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2873 | which would get here with a symbol type of ':'. */ | |
2874 | continue; | |
2875 | ||
2876 | default: | |
3e43a32a MS |
2877 | /* Unexpected symbol descriptor. The second and |
2878 | subsequent stabs of a continued stab can show up | |
2879 | here. The question is whether they ever can mimic | |
2880 | a normal stab--it would be nice if not, since we | |
2881 | certainly don't want to spend the time searching to | |
2882 | the end of every string looking for a | |
2883 | backslash. */ | |
d5d0a62f | 2884 | |
23136709 | 2885 | complaint (&symfile_complaints, |
e2e0b3e5 | 2886 | _("unknown symbol descriptor `%c'"), p[1]); |
d5d0a62f EZ |
2887 | |
2888 | /* Ignore it; perhaps it is an extension that we don't | |
2889 | know about. */ | |
2890 | continue; | |
2891 | } | |
2892 | } | |
c906108c SS |
2893 | } |
2894 | } | |
2895 | ||
2896 | if (pst) | |
2897 | { | |
5c80ed9d | 2898 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
c906108c SS |
2899 | ssymnum, dependency_list, |
2900 | dependencies_used, textlow_not_set); | |
2901 | } | |
2902 | ||
581e13c1 MS |
2903 | /* Record the toc offset value of this symbol table into objfile |
2904 | structure. If no XMC_TC0 is found, toc_offset should be zero. | |
2905 | Another place to obtain this information would be file auxiliary | |
2906 | header. */ | |
c906108c | 2907 | |
b8b98ad1 | 2908 | XCOFF_DATA (objfile)->toc_offset = toc_offset; |
c906108c SS |
2909 | } |
2910 | ||
2911 | /* Return the toc offset value for a given objfile. */ | |
2912 | ||
2913 | CORE_ADDR | |
63807e1d | 2914 | xcoff_get_toc_offset (struct objfile *objfile) |
c906108c SS |
2915 | { |
2916 | if (objfile) | |
b8b98ad1 | 2917 | return XCOFF_DATA (objfile)->toc_offset; |
c906108c SS |
2918 | return 0; |
2919 | } | |
2920 | ||
2921 | /* Scan and build partial symbols for a symbol file. | |
2922 | We have been initialized by a call to dbx_symfile_init, which | |
2923 | put all the relevant info into a "struct dbx_symfile_info", | |
2924 | hung off the objfile structure. | |
2925 | ||
2926 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
581e13c1 MS |
2927 | various sections are (depending where the sections were actually |
2928 | loaded). */ | |
c906108c SS |
2929 | |
2930 | static void | |
f4352531 | 2931 | xcoff_initial_scan (struct objfile *objfile, int symfile_flags) |
c906108c SS |
2932 | { |
2933 | bfd *abfd; | |
2934 | int val; | |
2935 | struct cleanup *back_to; | |
c5aa993b JM |
2936 | int num_symbols; /* # of symbols */ |
2937 | file_ptr symtab_offset; /* symbol table and */ | |
2938 | file_ptr stringtab_offset; /* string table file offsets */ | |
c906108c SS |
2939 | struct coff_symfile_info *info; |
2940 | char *name; | |
2941 | unsigned int size; | |
2942 | ||
b8b98ad1 | 2943 | info = XCOFF_DATA (objfile); |
c906108c SS |
2944 | symfile_bfd = abfd = objfile->obfd; |
2945 | name = objfile->name; | |
2946 | ||
2947 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2948 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2949 | stringtab_offset = symtab_offset + | |
c5aa993b | 2950 | num_symbols * coff_data (abfd)->local_symesz; |
c906108c SS |
2951 | |
2952 | info->min_lineno_offset = 0; | |
2953 | info->max_lineno_offset = 0; | |
2954 | bfd_map_over_sections (abfd, find_linenos, info); | |
2955 | ||
2956 | if (num_symbols > 0) | |
2957 | { | |
2958 | /* Read the string table. */ | |
2959 | init_stringtab (abfd, stringtab_offset, objfile); | |
2960 | ||
2961 | /* Read the .debug section, if present. */ | |
2962 | { | |
7be0c536 | 2963 | struct bfd_section *secp; |
c906108c | 2964 | bfd_size_type length; |
ea9f10bb | 2965 | bfd_byte *debugsec = NULL; |
c906108c SS |
2966 | |
2967 | secp = bfd_get_section_by_name (abfd, ".debug"); | |
2968 | if (secp) | |
2969 | { | |
2970 | length = bfd_section_size (abfd, secp); | |
2971 | if (length) | |
2972 | { | |
ea9f10bb | 2973 | debugsec = obstack_alloc (&objfile->objfile_obstack, length); |
c906108c | 2974 | |
ea9f10bb | 2975 | if (!bfd_get_full_section_contents (abfd, secp, &debugsec)) |
c906108c | 2976 | { |
8a3fe4f8 | 2977 | error (_("Error reading .debug section of `%s': %s"), |
c906108c SS |
2978 | name, bfd_errmsg (bfd_get_error ())); |
2979 | } | |
2980 | } | |
2981 | } | |
b8b98ad1 | 2982 | info->debugsec = debugsec; |
c906108c SS |
2983 | } |
2984 | } | |
2985 | ||
2986 | /* Read the symbols. We keep them in core because we will want to | |
2987 | access them randomly in read_symbol*. */ | |
2988 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); | |
2989 | if (val < 0) | |
8a3fe4f8 | 2990 | error (_("Error reading symbols from %s: %s"), |
c906108c SS |
2991 | name, bfd_errmsg (bfd_get_error ())); |
2992 | size = coff_data (abfd)->local_symesz * num_symbols; | |
b8b98ad1 TT |
2993 | info->symtbl = obstack_alloc (&objfile->objfile_obstack, size); |
2994 | info->symtbl_num_syms = num_symbols; | |
2995 | ||
2996 | val = bfd_bread (info->symtbl, size, abfd); | |
c906108c | 2997 | if (val != size) |
e2e0b3e5 | 2998 | perror_with_name (_("reading symbol table")); |
c906108c | 2999 | |
581e13c1 | 3000 | /* If we are reinitializing, or if we have never loaded syms yet, init. */ |
de1d8fb9 | 3001 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3002 | /* I'm not sure how how good num_symbols is; the rule of thumb in |
3003 | init_psymbol_list was developed for a.out. On the one hand, | |
3004 | num_symbols includes auxents. On the other hand, it doesn't | |
3005 | include N_SLINE. */ | |
3006 | init_psymbol_list (objfile, num_symbols); | |
3007 | ||
3008 | free_pending_blocks (); | |
a0b3c4fd | 3009 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c SS |
3010 | |
3011 | init_minimal_symbol_collection (); | |
56e290f4 | 3012 | make_cleanup_discard_minimal_symbols (); |
c906108c SS |
3013 | |
3014 | /* Now that the symbol table data of the executable file are all in core, | |
3015 | process them and define symbols accordingly. */ | |
3016 | ||
d4f3574e | 3017 | scan_xcoff_symtab (objfile); |
c906108c SS |
3018 | |
3019 | /* Install any minimal symbols that have been collected as the current | |
581e13c1 | 3020 | minimal symbols for this objfile. */ |
c906108c SS |
3021 | |
3022 | install_minimal_symbols (objfile); | |
3023 | ||
316a8b21 TG |
3024 | /* DWARF2 sections. */ |
3025 | ||
3026 | if (dwarf2_has_info (objfile, &dwarf2_xcoff_names)) | |
3027 | dwarf2_build_psymtabs (objfile); | |
3028 | ||
3029 | dwarf2_build_frame_info (objfile); | |
3030 | ||
c906108c SS |
3031 | do_cleanups (back_to); |
3032 | } | |
3033 | \f | |
d4f3574e | 3034 | static void |
3e43a32a MS |
3035 | xcoff_symfile_offsets (struct objfile *objfile, |
3036 | struct section_addr_info *addrs) | |
c906108c | 3037 | { |
b8fbeb18 | 3038 | asection *sect = NULL; |
c906108c SS |
3039 | int i; |
3040 | ||
a39a16c4 | 3041 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
d4f3574e | 3042 | objfile->section_offsets = (struct section_offsets *) |
8b92e4d5 | 3043 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 3044 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
c906108c | 3045 | |
581e13c1 | 3046 | /* Initialize the section indexes for future use. */ |
b8fbeb18 EZ |
3047 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
3048 | if (sect) | |
3049 | objfile->sect_index_text = sect->index; | |
3050 | ||
3051 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
3052 | if (sect) | |
3053 | objfile->sect_index_data = sect->index; | |
3054 | ||
3055 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
3056 | if (sect) | |
3057 | objfile->sect_index_bss = sect->index; | |
3058 | ||
3059 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
3060 | if (sect) | |
3061 | objfile->sect_index_rodata = sect->index; | |
3062 | ||
c906108c | 3063 | for (i = 0; i < objfile->num_sections; ++i) |
b8fbeb18 EZ |
3064 | { |
3065 | /* syms_from_objfile kindly subtracts from addr the | |
3066 | bfd_section_vma of the .text section. This strikes me as | |
3067 | wrong--whether the offset to be applied to symbol reading is | |
3068 | relative to the start address of the section depends on the | |
3069 | symbol format. In any event, this whole "addr" concept is | |
3070 | pretty broken (it doesn't handle any section but .text | |
3071 | sensibly), so just ignore the addr parameter and use 0. | |
3072 | rs6000-nat.c will set the correct section offsets via | |
3073 | objfile_relocate. */ | |
f0a58b0b | 3074 | (objfile->section_offsets)->offsets[i] = 0; |
b8fbeb18 | 3075 | } |
c906108c SS |
3076 | } |
3077 | ||
3078 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
3079 | ||
00b5771c | 3080 | static const struct sym_fns xcoff_sym_fns = |
c906108c SS |
3081 | { |
3082 | ||
7a78ae4e | 3083 | /* It is possible that coff and xcoff should be merged as |
c906108c SS |
3084 | they do have fundamental similarities (for example, the extra storage |
3085 | classes used for stabs could presumably be recognized in any COFF file). | |
3086 | However, in addition to obvious things like all the csect hair, there are | |
3087 | some subtler differences between xcoffread.c and coffread.c, notably | |
3088 | the fact that coffread.c has no need to read in all the symbols, but | |
3089 | xcoffread.c reads all the symbols and does in fact randomly access them | |
3090 | (in C_BSTAT and line number processing). */ | |
3091 | ||
7a78ae4e | 3092 | bfd_target_xcoff_flavour, |
c906108c | 3093 | |
3e43a32a MS |
3094 | xcoff_new_init, /* init anything gbl to entire symtab */ |
3095 | xcoff_symfile_init, /* read initial info, setup for sym_read() */ | |
3096 | xcoff_initial_scan, /* read a symbol file into symtab */ | |
b11896a5 | 3097 | NULL, /* sym_read_psymbols */ |
3e43a32a MS |
3098 | xcoff_symfile_finish, /* finished with file, cleanup */ |
3099 | xcoff_symfile_offsets, /* xlate offsets ext->int form */ | |
3100 | default_symfile_segments, /* Get segment information from a file. */ | |
3101 | aix_process_linenos, | |
3102 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3103 | NULL, /* sym_probe_fns */ |
00b5771c | 3104 | &psym_functions |
c906108c SS |
3105 | }; |
3106 | ||
d5367fe1 JB |
3107 | /* Same as xcoff_get_n_import_files, but for core files. */ |
3108 | ||
3109 | static int | |
3110 | xcoff_get_core_n_import_files (bfd *abfd) | |
3111 | { | |
3112 | asection *sect = bfd_get_section_by_name (abfd, ".ldinfo"); | |
3113 | gdb_byte buf[4]; | |
3114 | file_ptr offset = 0; | |
3115 | int n_entries = 0; | |
3116 | ||
3117 | if (sect == NULL) | |
3118 | return -1; /* Not a core file. */ | |
3119 | ||
3120 | for (offset = 0; offset < bfd_get_section_size (sect);) | |
3121 | { | |
3122 | int next; | |
3123 | ||
3124 | n_entries++; | |
3125 | ||
3126 | if (!bfd_get_section_contents (abfd, sect, buf, offset, 4)) | |
3127 | return -1; | |
3128 | next = bfd_get_32 (abfd, buf); | |
3129 | if (next == 0) | |
3130 | break; /* This is the last entry. */ | |
3131 | offset += next; | |
3132 | } | |
3133 | ||
3134 | /* Return the number of entries, excluding the first one, which is | |
3135 | the path to the executable that produced this core file. */ | |
3136 | return n_entries - 1; | |
3137 | } | |
3138 | ||
3139 | /* Return the number of import files (shared libraries) that the given | |
3140 | BFD depends on. Return -1 if this number could not be computed. */ | |
3141 | ||
3142 | int | |
3143 | xcoff_get_n_import_files (bfd *abfd) | |
3144 | { | |
3145 | asection *sect = bfd_get_section_by_name (abfd, ".loader"); | |
3146 | gdb_byte buf[4]; | |
3147 | int l_nimpid; | |
3148 | ||
3149 | /* If the ".loader" section does not exist, the objfile is probably | |
3150 | not an executable. Might be a core file... */ | |
3151 | if (sect == NULL) | |
3152 | return xcoff_get_core_n_import_files (abfd); | |
3153 | ||
3154 | /* The number of entries in the Import Files Table is stored in | |
3155 | field l_nimpid. This field is always at offset 16, and is | |
3156 | always 4 bytes long. Read those 4 bytes. */ | |
3157 | ||
3158 | if (!bfd_get_section_contents (abfd, sect, buf, 16, 4)) | |
3159 | return -1; | |
3160 | l_nimpid = bfd_get_32 (abfd, buf); | |
3161 | ||
3162 | /* By convention, the first entry is the default LIBPATH value | |
3163 | to be used by the system loader, so it does not count towards | |
3164 | the number of import files. */ | |
3165 | return l_nimpid - 1; | |
3166 | } | |
3167 | ||
b8b98ad1 TT |
3168 | /* Free the per-objfile xcoff data. */ |
3169 | ||
3170 | static void | |
3171 | xcoff_free_info (struct objfile *objfile, void *arg) | |
3172 | { | |
3173 | xfree (arg); | |
3174 | } | |
3175 | ||
63807e1d PA |
3176 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
3177 | extern initialize_file_ftype _initialize_xcoffread; | |
3178 | ||
c906108c | 3179 | void |
fba45db2 | 3180 | _initialize_xcoffread (void) |
c906108c | 3181 | { |
c5aa993b | 3182 | add_symtab_fns (&xcoff_sym_fns); |
b8b98ad1 TT |
3183 | |
3184 | xcoff_objfile_data_key = register_objfile_data_with_cleanup (NULL, | |
3185 | xcoff_free_info); | |
c906108c | 3186 | } |