Commit | Line | Data |
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c906108c | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
ecd75fc8 | 2 | Copyright (C) 1986-2014 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> | |
0e9f083f | 27 | #include <string.h> |
c906108c | 28 | |
c0ccb908 | 29 | #ifdef HAVE_SYS_FILE_H |
c906108c SS |
30 | #include <sys/file.h> |
31 | #endif | |
53ce3c39 | 32 | #include <sys/stat.h> |
c906108c SS |
33 | |
34 | #include "coff/internal.h" | |
35 | #include "libcoff.h" /* FIXME, internal data from BFD */ | |
11ed25ac KB |
36 | #include "coff/xcoff.h" |
37 | #include "libxcoff.h" | |
c906108c | 38 | #include "coff/rs6000.h" |
63807e1d | 39 | #include "xcoffread.h" |
c906108c SS |
40 | |
41 | #include "symtab.h" | |
42 | #include "gdbtypes.h" | |
9ab9195f | 43 | /* FIXME: ezannoni/2004-02-13 Verify if the include below is really needed. */ |
c906108c SS |
44 | #include "symfile.h" |
45 | #include "objfiles.h" | |
46 | #include "buildsym.h" | |
47 | #include "stabsread.h" | |
48 | #include "expression.h" | |
c906108c | 49 | #include "complaints.h" |
ccefe4c4 | 50 | #include "psympriv.h" |
c906108c SS |
51 | |
52 | #include "gdb-stabs.h" | |
53 | ||
54 | /* For interface with stabsread.c. */ | |
55 | #include "aout/stab_gnu.h" | |
56 | ||
c906108c | 57 | \f |
b8b98ad1 TT |
58 | /* Key for XCOFF-associated data. */ |
59 | ||
60 | static const struct objfile_data *xcoff_objfile_data_key; | |
61 | ||
c906108c SS |
62 | /* We put a pointer to this structure in the read_symtab_private field |
63 | of the psymtab. */ | |
64 | ||
c5aa993b JM |
65 | struct symloc |
66 | { | |
c906108c | 67 | |
c5aa993b | 68 | /* First symbol number for this file. */ |
c906108c | 69 | |
c5aa993b | 70 | int first_symnum; |
c906108c | 71 | |
c5aa993b JM |
72 | /* Number of symbols in the section of the symbol table devoted to |
73 | this file's symbols (actually, the section bracketed may contain | |
74 | more than just this file's symbols). If numsyms is 0, the only | |
75 | reason for this thing's existence is the dependency list. Nothing | |
76 | else will happen when it is read in. */ | |
c906108c | 77 | |
c5aa993b | 78 | int numsyms; |
c906108c | 79 | |
3e43a32a MS |
80 | /* Position of the start of the line number information for this |
81 | psymtab. */ | |
c5aa993b JM |
82 | unsigned int lineno_off; |
83 | }; | |
c906108c | 84 | |
581e13c1 | 85 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
86 | |
87 | static enum language psymtab_language = language_unknown; | |
c906108c | 88 | \f |
c5aa993b | 89 | |
581e13c1 | 90 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 91 | |
c5aa993b JM |
92 | struct coff_symbol |
93 | { | |
94 | char *c_name; | |
581e13c1 MS |
95 | int c_symnum; /* Symbol number of this entry. */ |
96 | int c_naux; /* 0 if syment only, 1 if syment + auxent. */ | |
086850b2 | 97 | CORE_ADDR c_value; |
c5aa993b JM |
98 | unsigned char c_sclass; |
99 | int c_secnum; | |
100 | unsigned int c_type; | |
101 | }; | |
c906108c | 102 | |
581e13c1 | 103 | /* Last function's saved coff symbol `cs'. */ |
c906108c SS |
104 | |
105 | static struct coff_symbol fcn_cs_saved; | |
106 | ||
107 | static bfd *symfile_bfd; | |
108 | ||
109 | /* Core address of start and end of text of current source file. | |
110 | This is calculated from the first function seen after a C_FILE | |
581e13c1 | 111 | symbol. */ |
c906108c SS |
112 | |
113 | ||
114 | static CORE_ADDR cur_src_end_addr; | |
115 | ||
116 | /* Core address of the end of the first object file. */ | |
117 | ||
118 | static CORE_ADDR first_object_file_end; | |
119 | ||
581e13c1 | 120 | /* Initial symbol-table-debug-string vector length. */ |
c906108c SS |
121 | |
122 | #define INITIAL_STABVECTOR_LENGTH 40 | |
123 | ||
124 | /* Nonzero if within a function (so symbols should be local, | |
125 | if nothing says specifically). */ | |
126 | ||
127 | int within_function; | |
128 | ||
129 | /* Size of a COFF symbol. I think it is always 18, so I'm not sure | |
130 | there is any reason not to just use a #define, but might as well | |
131 | ask BFD for the size and store it here, I guess. */ | |
132 | ||
c5aa993b | 133 | static unsigned local_symesz; |
c906108c | 134 | |
c5aa993b JM |
135 | struct coff_symfile_info |
136 | { | |
581e13c1 MS |
137 | file_ptr min_lineno_offset; /* Where in file lowest line#s are. */ |
138 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */ | |
c906108c | 139 | |
c5aa993b JM |
140 | /* Pointer to the string table. */ |
141 | char *strtbl; | |
c906108c | 142 | |
c5aa993b JM |
143 | /* Pointer to debug section. */ |
144 | char *debugsec; | |
c906108c | 145 | |
c5aa993b JM |
146 | /* Pointer to the a.out symbol table. */ |
147 | char *symtbl; | |
c906108c | 148 | |
c5aa993b JM |
149 | /* Number of symbols in symtbl. */ |
150 | int symtbl_num_syms; | |
c906108c | 151 | |
c5aa993b JM |
152 | /* Offset in data section to TOC anchor. */ |
153 | CORE_ADDR toc_offset; | |
154 | }; | |
c906108c | 155 | |
b8b98ad1 TT |
156 | /* Convenience macro to access the per-objfile XCOFF data. */ |
157 | ||
158 | #define XCOFF_DATA(objfile) \ | |
159 | ((struct coff_symfile_info *) objfile_data ((objfile), \ | |
160 | xcoff_objfile_data_key)) | |
161 | ||
316a8b21 TG |
162 | /* XCOFF names for dwarf sections. There is no compressed sections. */ |
163 | ||
164 | static const struct dwarf2_debug_sections dwarf2_xcoff_names = { | |
165 | { ".dwinfo", NULL }, | |
166 | { ".dwabrev", NULL }, | |
167 | { ".dwline", NULL }, | |
168 | { ".dwloc", NULL }, | |
169 | { NULL, NULL }, /* debug_macinfo */ | |
24d3216f | 170 | { NULL, NULL }, /* debug_macro */ |
316a8b21 TG |
171 | { ".dwstr", NULL }, |
172 | { ".dwrnges", NULL }, | |
173 | { NULL, NULL }, /* debug_types */ | |
3019eac3 | 174 | { NULL, NULL }, /* debug_addr */ |
316a8b21 TG |
175 | { ".dwframe", NULL }, |
176 | { NULL, NULL }, /* eh_frame */ | |
24d3216f TT |
177 | { NULL, NULL }, /* gdb_index */ |
178 | 23 | |
316a8b21 TG |
179 | }; |
180 | ||
23136709 KB |
181 | static void |
182 | bf_notfound_complaint (void) | |
183 | { | |
3e43a32a MS |
184 | complaint (&symfile_complaints, |
185 | _("line numbers off, `.bf' symbol not found")); | |
23136709 | 186 | } |
c906108c | 187 | |
23136709 KB |
188 | static void |
189 | ef_complaint (int arg1) | |
190 | { | |
191 | complaint (&symfile_complaints, | |
e2e0b3e5 | 192 | _("Mismatched .ef symbol ignored starting at symnum %d"), arg1); |
23136709 | 193 | } |
c906108c | 194 | |
23136709 KB |
195 | static void |
196 | eb_complaint (int arg1) | |
197 | { | |
198 | complaint (&symfile_complaints, | |
e2e0b3e5 | 199 | _("Mismatched .eb symbol ignored starting at symnum %d"), arg1); |
23136709 | 200 | } |
c906108c | 201 | |
a14ed312 | 202 | static void xcoff_initial_scan (struct objfile *, int); |
c906108c | 203 | |
a14ed312 | 204 | static void scan_xcoff_symtab (struct objfile *); |
c906108c | 205 | |
a14ed312 | 206 | static char *xcoff_next_symbol_text (struct objfile *); |
c906108c | 207 | |
a14ed312 | 208 | static void record_include_begin (struct coff_symbol *); |
c906108c SS |
209 | |
210 | static void | |
a14ed312 KB |
211 | enter_line_range (struct subfile *, unsigned, unsigned, |
212 | CORE_ADDR, CORE_ADDR, unsigned *); | |
c906108c | 213 | |
a14ed312 | 214 | static void init_stringtab (bfd *, file_ptr, struct objfile *); |
c906108c | 215 | |
a14ed312 | 216 | static void xcoff_symfile_init (struct objfile *); |
c906108c | 217 | |
a14ed312 | 218 | static void xcoff_new_init (struct objfile *); |
c906108c | 219 | |
a14ed312 | 220 | static void xcoff_symfile_finish (struct objfile *); |
c906108c | 221 | |
a14ed312 | 222 | static char *coff_getfilename (union internal_auxent *, struct objfile *); |
c906108c | 223 | |
a14ed312 | 224 | static void read_symbol (struct internal_syment *, int); |
c906108c | 225 | |
a14ed312 | 226 | static int read_symbol_lineno (int); |
c906108c | 227 | |
470d5666 | 228 | static CORE_ADDR read_symbol_nvalue (int); |
c906108c | 229 | |
a14ed312 KB |
230 | static struct symbol *process_xcoff_symbol (struct coff_symbol *, |
231 | struct objfile *); | |
c906108c | 232 | |
5c80ed9d | 233 | static void read_xcoff_symtab (struct objfile *, struct partial_symtab *); |
c906108c SS |
234 | |
235 | #if 0 | |
a14ed312 | 236 | static void add_stab_to_list (char *, struct pending_stabs **); |
c906108c SS |
237 | #endif |
238 | ||
a14ed312 | 239 | static int compare_lte (const void *, const void *); |
c906108c | 240 | |
a14ed312 | 241 | static struct linetable *arrange_linetable (struct linetable *); |
c906108c | 242 | |
a14ed312 | 243 | static void record_include_end (struct coff_symbol *); |
c906108c | 244 | |
a14ed312 | 245 | static void process_linenos (CORE_ADDR, CORE_ADDR); |
c906108c | 246 | \f |
c5aa993b | 247 | |
c906108c SS |
248 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
249 | code. */ | |
a14ed312 KB |
250 | static int secnum_to_section (int, struct objfile *); |
251 | static asection *secnum_to_bfd_section (int, struct objfile *); | |
c906108c | 252 | |
c5aa993b JM |
253 | struct find_targ_sec_arg |
254 | { | |
255 | int targ_index; | |
256 | int *resultp; | |
257 | asection **bfd_sect; | |
b8fbeb18 | 258 | struct objfile *objfile; |
c5aa993b | 259 | }; |
c906108c | 260 | |
a14ed312 | 261 | static void find_targ_sec (bfd *, asection *, void *); |
c906108c | 262 | |
c5aa993b | 263 | static void |
4efb68b1 | 264 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 265 | { |
c5aa993b | 266 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
b8fbeb18 | 267 | struct objfile *objfile = args->objfile; |
a109c7c1 | 268 | |
c906108c SS |
269 | if (sect->target_index == args->targ_index) |
270 | { | |
271 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
272 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
b8fbeb18 | 273 | *args->resultp = SECT_OFF_TEXT (objfile); |
c906108c | 274 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) |
b8fbeb18 | 275 | *args->resultp = SECT_OFF_DATA (objfile); |
c906108c | 276 | else |
65cf3563 | 277 | *args->resultp = gdb_bfd_section_index (abfd, sect); |
c906108c SS |
278 | *args->bfd_sect = sect; |
279 | } | |
280 | } | |
281 | ||
ec92004f JB |
282 | /* Search all BFD sections for the section whose target_index is |
283 | equal to N_SCNUM. Set *BFD_SECT to that section. The section's | |
284 | associated index in the objfile's section_offset table is also | |
285 | stored in *SECNUM. | |
286 | ||
287 | If no match is found, *BFD_SECT is set to NULL, and *SECNUM | |
288 | is set to the text section's number. */ | |
a109c7c1 | 289 | |
ec92004f JB |
290 | static void |
291 | xcoff_secnum_to_sections (int n_scnum, struct objfile *objfile, | |
292 | asection **bfd_sect, int *secnum) | |
293 | { | |
c906108c | 294 | struct find_targ_sec_arg args; |
ec92004f JB |
295 | |
296 | args.targ_index = n_scnum; | |
297 | args.resultp = secnum; | |
298 | args.bfd_sect = bfd_sect; | |
b8fbeb18 | 299 | args.objfile = objfile; |
ec92004f JB |
300 | |
301 | *bfd_sect = NULL; | |
302 | *secnum = SECT_OFF_TEXT (objfile); | |
303 | ||
c906108c | 304 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
c906108c SS |
305 | } |
306 | ||
ec92004f JB |
307 | /* Return the section number (SECT_OFF_*) that N_SCNUM points to. */ |
308 | ||
309 | static int | |
310 | secnum_to_section (int n_scnum, struct objfile *objfile) | |
311 | { | |
312 | int secnum; | |
313 | asection *ignored; | |
314 | ||
315 | xcoff_secnum_to_sections (n_scnum, objfile, &ignored, &secnum); | |
316 | return secnum; | |
317 | } | |
318 | ||
319 | /* Return the BFD section that N_SCNUM points to. */ | |
320 | ||
c906108c | 321 | static asection * |
ec92004f | 322 | secnum_to_bfd_section (int n_scnum, struct objfile *objfile) |
c906108c | 323 | { |
ec92004f JB |
324 | int ignored; |
325 | asection *bfd_sect; | |
a109c7c1 | 326 | |
ec92004f JB |
327 | xcoff_secnum_to_sections (n_scnum, objfile, &bfd_sect, &ignored); |
328 | return bfd_sect; | |
c906108c SS |
329 | } |
330 | \f | |
581e13c1 | 331 | /* add a given stab string into given stab vector. */ |
c906108c SS |
332 | |
333 | #if 0 | |
334 | ||
335 | static void | |
fba45db2 | 336 | add_stab_to_list (char *stabname, struct pending_stabs **stabvector) |
c906108c | 337 | { |
c5aa993b JM |
338 | if (*stabvector == NULL) |
339 | { | |
340 | *stabvector = (struct pending_stabs *) | |
341 | xmalloc (sizeof (struct pending_stabs) + | |
342 | INITIAL_STABVECTOR_LENGTH * sizeof (char *)); | |
343 | (*stabvector)->count = 0; | |
344 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
345 | } | |
346 | else if ((*stabvector)->count >= (*stabvector)->length) | |
347 | { | |
348 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
349 | *stabvector = (struct pending_stabs *) | |
350 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + | |
3e43a32a | 351 | (*stabvector)->length * sizeof (char *)); |
c5aa993b JM |
352 | } |
353 | (*stabvector)->stab[(*stabvector)->count++] = stabname; | |
c906108c SS |
354 | } |
355 | ||
356 | #endif | |
c5aa993b | 357 | \f/* *INDENT-OFF* */ |
c906108c SS |
358 | /* Linenos are processed on a file-by-file basis. |
359 | ||
360 | Two reasons: | |
361 | ||
c5aa993b | 362 | 1) xlc (IBM's native c compiler) postpones static function code |
581e13c1 | 363 | emission to the end of a compilation unit. This way it can |
c5aa993b | 364 | determine if those functions (statics) are needed or not, and |
581e13c1 | 365 | can do some garbage collection (I think). This makes line |
c5aa993b JM |
366 | numbers and corresponding addresses unordered, and we end up |
367 | with a line table like: | |
368 | ||
369 | ||
370 | lineno addr | |
371 | foo() 10 0x100 | |
372 | 20 0x200 | |
373 | 30 0x300 | |
374 | ||
375 | foo3() 70 0x400 | |
376 | 80 0x500 | |
377 | 90 0x600 | |
378 | ||
379 | static foo2() | |
380 | 40 0x700 | |
381 | 50 0x800 | |
382 | 60 0x900 | |
383 | ||
384 | and that breaks gdb's binary search on line numbers, if the | |
581e13c1 | 385 | above table is not sorted on line numbers. And that sort |
c5aa993b JM |
386 | should be on function based, since gcc can emit line numbers |
387 | like: | |
388 | ||
389 | 10 0x100 - for the init/test part of a for stmt. | |
390 | 20 0x200 | |
391 | 30 0x300 | |
392 | 10 0x400 - for the increment part of a for stmt. | |
393 | ||
581e13c1 | 394 | arrange_linetable() will do this sorting. |
c5aa993b JM |
395 | |
396 | 2) aix symbol table might look like: | |
397 | ||
398 | c_file // beginning of a new file | |
399 | .bi // beginning of include file | |
400 | .ei // end of include file | |
401 | .bi | |
402 | .ei | |
403 | ||
404 | basically, .bi/.ei pairs do not necessarily encapsulate | |
581e13c1 | 405 | their scope. They need to be recorded, and processed later |
c5aa993b JM |
406 | on when we come the end of the compilation unit. |
407 | Include table (inclTable) and process_linenos() handle | |
408 | that. */ | |
9846de1b | 409 | /* *INDENT-ON* */ |
c906108c | 410 | |
c5aa993b JM |
411 | |
412 | ||
581e13c1 | 413 | /* compare line table entry addresses. */ |
c906108c SS |
414 | |
415 | static int | |
fba45db2 | 416 | compare_lte (const void *lte1p, const void *lte2p) |
c906108c SS |
417 | { |
418 | struct linetable_entry *lte1 = (struct linetable_entry *) lte1p; | |
419 | struct linetable_entry *lte2 = (struct linetable_entry *) lte2p; | |
a109c7c1 | 420 | |
c906108c SS |
421 | return lte1->pc - lte2->pc; |
422 | } | |
423 | ||
581e13c1 MS |
424 | /* Given a line table with function entries are marked, arrange its |
425 | functions in ascending order and strip off function entry markers | |
426 | and return it in a newly created table. If the old one is good | |
427 | enough, return the old one. */ | |
c906108c SS |
428 | /* FIXME: I think all this stuff can be replaced by just passing |
429 | sort_linevec = 1 to end_symtab. */ | |
430 | ||
431 | static struct linetable * | |
b095261a | 432 | arrange_linetable (struct linetable *oldLineTb) |
c906108c | 433 | { |
c5aa993b JM |
434 | int ii, jj, newline, /* new line count */ |
435 | function_count; /* # of functions */ | |
c906108c | 436 | |
c5aa993b JM |
437 | struct linetable_entry *fentry; /* function entry vector */ |
438 | int fentry_size; /* # of function entries */ | |
439 | struct linetable *newLineTb; /* new line table */ | |
a85c52f2 | 440 | int extra_lines = 0; |
c906108c SS |
441 | |
442 | #define NUM_OF_FUNCTIONS 20 | |
443 | ||
444 | fentry_size = NUM_OF_FUNCTIONS; | |
c5aa993b | 445 | fentry = (struct linetable_entry *) |
c906108c SS |
446 | xmalloc (fentry_size * sizeof (struct linetable_entry)); |
447 | ||
c5aa993b JM |
448 | for (function_count = 0, ii = 0; ii < oldLineTb->nitems; ++ii) |
449 | { | |
c5aa993b | 450 | if (oldLineTb->item[ii].line == 0) |
581e13c1 | 451 | { /* Function entry found. */ |
c5aa993b | 452 | if (function_count >= fentry_size) |
581e13c1 | 453 | { /* Make sure you have room. */ |
c5aa993b JM |
454 | fentry_size *= 2; |
455 | fentry = (struct linetable_entry *) | |
3e43a32a MS |
456 | xrealloc (fentry, |
457 | fentry_size * sizeof (struct linetable_entry)); | |
c5aa993b JM |
458 | } |
459 | fentry[function_count].line = ii; | |
460 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
461 | ++function_count; | |
a85c52f2 UW |
462 | |
463 | /* If the function was compiled with XLC, we may have to add an | |
464 | extra line entry later. Reserve space for that. */ | |
465 | if (ii + 1 < oldLineTb->nitems | |
466 | && oldLineTb->item[ii].pc != oldLineTb->item[ii + 1].pc) | |
467 | extra_lines++; | |
c5aa993b | 468 | } |
c906108c | 469 | } |
c906108c | 470 | |
c5aa993b JM |
471 | if (function_count == 0) |
472 | { | |
b8c9b27d | 473 | xfree (fentry); |
c5aa993b JM |
474 | return oldLineTb; |
475 | } | |
c906108c | 476 | else if (function_count > 1) |
3e43a32a MS |
477 | qsort (fentry, function_count, |
478 | sizeof (struct linetable_entry), compare_lte); | |
c906108c | 479 | |
581e13c1 | 480 | /* Allocate a new line table. */ |
c906108c SS |
481 | newLineTb = (struct linetable *) |
482 | xmalloc | |
c5aa993b | 483 | (sizeof (struct linetable) + |
a85c52f2 | 484 | (oldLineTb->nitems - function_count + extra_lines) * sizeof (struct linetable_entry)); |
c906108c | 485 | |
581e13c1 MS |
486 | /* If line table does not start with a function beginning, copy up until |
487 | a function begin. */ | |
c906108c SS |
488 | |
489 | newline = 0; | |
490 | if (oldLineTb->item[0].line != 0) | |
c5aa993b JM |
491 | for (newline = 0; |
492 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
c906108c SS |
493 | newLineTb->item[newline] = oldLineTb->item[newline]; |
494 | ||
581e13c1 | 495 | /* Now copy function lines one by one. */ |
c906108c | 496 | |
c5aa993b JM |
497 | for (ii = 0; ii < function_count; ++ii) |
498 | { | |
a85c52f2 UW |
499 | /* If the function was compiled with XLC, we may have to add an |
500 | extra line to cover the function prologue. */ | |
501 | jj = fentry[ii].line; | |
502 | if (jj + 1 < oldLineTb->nitems | |
503 | && oldLineTb->item[jj].pc != oldLineTb->item[jj + 1].pc) | |
504 | { | |
505 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
506 | newLineTb->item[newline].line = oldLineTb->item[jj + 1].line; | |
507 | newline++; | |
508 | } | |
509 | ||
c5aa993b JM |
510 | for (jj = fentry[ii].line + 1; |
511 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
512 | ++jj, ++newline) | |
513 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
514 | } | |
b8c9b27d | 515 | xfree (fentry); |
a85c52f2 UW |
516 | /* The number of items in the line table must include these |
517 | extra lines which were added in case of XLC compiled functions. */ | |
518 | newLineTb->nitems = oldLineTb->nitems - function_count + extra_lines; | |
c5aa993b JM |
519 | return newLineTb; |
520 | } | |
c906108c SS |
521 | |
522 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
581e13c1 | 523 | following `IncludeChain'. At the end of each symtab (end_symtab), |
c906108c | 524 | we will determine if we should create additional symtab's to |
581e13c1 | 525 | represent if (the include files. */ |
c906108c SS |
526 | |
527 | ||
c5aa993b JM |
528 | typedef struct _inclTable |
529 | { | |
530 | char *name; /* include filename */ | |
c906108c SS |
531 | |
532 | /* Offsets to the line table. end points to the last entry which is | |
533 | part of this include file. */ | |
c5aa993b JM |
534 | int begin, end; |
535 | ||
c906108c | 536 | struct subfile *subfile; |
581e13c1 | 537 | unsigned funStartLine; /* Start line # of its function. */ |
c5aa993b JM |
538 | } |
539 | InclTable; | |
c906108c SS |
540 | |
541 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
c5aa993b JM |
542 | static InclTable *inclTable; /* global include table */ |
543 | static int inclIndx; /* last entry to table */ | |
544 | static int inclLength; /* table length */ | |
545 | static int inclDepth; /* nested include depth */ | |
c906108c | 546 | |
a14ed312 | 547 | static void allocate_include_entry (void); |
c906108c SS |
548 | |
549 | static void | |
fba45db2 | 550 | record_include_begin (struct coff_symbol *cs) |
c906108c SS |
551 | { |
552 | if (inclDepth) | |
553 | { | |
554 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
c5aa993b | 555 | of course, but in corresponding .s files.). */ |
c906108c SS |
556 | |
557 | /* This can happen with old versions of GCC. | |
c5aa993b JM |
558 | GCC 2.3.3-930426 does not exhibit this on a test case which |
559 | a user said produced the message for him. */ | |
e2e0b3e5 | 560 | complaint (&symfile_complaints, _("Nested C_BINCL symbols")); |
c906108c SS |
561 | } |
562 | ++inclDepth; | |
563 | ||
564 | allocate_include_entry (); | |
565 | ||
c5aa993b JM |
566 | inclTable[inclIndx].name = cs->c_name; |
567 | inclTable[inclIndx].begin = cs->c_value; | |
c906108c SS |
568 | } |
569 | ||
570 | static void | |
fba45db2 | 571 | record_include_end (struct coff_symbol *cs) |
c906108c | 572 | { |
c5aa993b | 573 | InclTable *pTbl; |
c906108c SS |
574 | |
575 | if (inclDepth == 0) | |
576 | { | |
e2e0b3e5 | 577 | complaint (&symfile_complaints, _("Mismatched C_BINCL/C_EINCL pair")); |
c906108c SS |
578 | } |
579 | ||
580 | allocate_include_entry (); | |
581 | ||
c5aa993b | 582 | pTbl = &inclTable[inclIndx]; |
c906108c SS |
583 | pTbl->end = cs->c_value; |
584 | ||
585 | --inclDepth; | |
586 | ++inclIndx; | |
587 | } | |
588 | ||
589 | static void | |
fba45db2 | 590 | allocate_include_entry (void) |
c906108c SS |
591 | { |
592 | if (inclTable == NULL) | |
593 | { | |
c5aa993b | 594 | inclTable = (InclTable *) |
c906108c SS |
595 | xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); |
596 | memset (inclTable, | |
597 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
598 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; | |
599 | inclIndx = 0; | |
600 | } | |
601 | else if (inclIndx >= inclLength) | |
602 | { | |
603 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
c5aa993b | 604 | inclTable = (InclTable *) |
c906108c | 605 | xrealloc (inclTable, sizeof (InclTable) * inclLength); |
c5aa993b JM |
606 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, |
607 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
c906108c SS |
608 | } |
609 | } | |
610 | ||
611 | /* Global variable to pass the psymtab down to all the routines involved | |
612 | in psymtab to symtab processing. */ | |
613 | static struct partial_symtab *this_symtab_psymtab; | |
614 | ||
5c80ed9d TT |
615 | /* Objfile related to this_symtab_psymtab; set at the same time. */ |
616 | static struct objfile *this_symtab_objfile; | |
617 | ||
c906108c | 618 | /* given the start and end addresses of a compilation unit (or a csect, |
581e13c1 | 619 | at times) process its lines and create appropriate line vectors. */ |
c906108c SS |
620 | |
621 | static void | |
fba45db2 | 622 | process_linenos (CORE_ADDR start, CORE_ADDR end) |
c906108c SS |
623 | { |
624 | int offset, ii; | |
b8b98ad1 | 625 | file_ptr max_offset |
5c80ed9d | 626 | = XCOFF_DATA (this_symtab_objfile)->max_lineno_offset; |
c906108c SS |
627 | |
628 | /* subfile structure for the main compilation unit. */ | |
629 | struct subfile main_subfile; | |
630 | ||
631 | /* In the main source file, any time we see a function entry, we | |
632 | reset this variable to function's absolute starting line number. | |
633 | All the following line numbers in the function are relative to | |
634 | this, and we record absolute line numbers in record_line(). */ | |
635 | ||
636 | unsigned int main_source_baseline = 0; | |
637 | ||
638 | unsigned *firstLine; | |
639 | ||
640 | offset = | |
c5aa993b | 641 | ((struct symloc *) this_symtab_psymtab->read_symtab_private)->lineno_off; |
c906108c SS |
642 | if (offset == 0) |
643 | goto return_after_cleanup; | |
644 | ||
645 | memset (&main_subfile, '\0', sizeof (main_subfile)); | |
646 | ||
647 | if (inclIndx == 0) | |
581e13c1 MS |
648 | /* All source lines were in the main source file. None in include |
649 | files. */ | |
c906108c | 650 | |
c5aa993b JM |
651 | enter_line_range (&main_subfile, offset, 0, start, end, |
652 | &main_source_baseline); | |
c906108c SS |
653 | |
654 | else | |
655 | { | |
656 | /* There was source with line numbers in include files. */ | |
7a78ae4e ND |
657 | |
658 | int linesz = | |
5c80ed9d | 659 | coff_data (this_symtab_objfile->obfd)->local_linesz; |
c906108c | 660 | main_source_baseline = 0; |
7a78ae4e | 661 | |
c5aa993b | 662 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c SS |
663 | { |
664 | struct subfile *tmpSubfile; | |
665 | ||
666 | /* If there is main file source before include file, enter it. */ | |
667 | if (offset < inclTable[ii].begin) | |
668 | { | |
669 | enter_line_range | |
7a78ae4e | 670 | (&main_subfile, offset, inclTable[ii].begin - linesz, |
c906108c SS |
671 | start, 0, &main_source_baseline); |
672 | } | |
673 | ||
46212e0b | 674 | if (strcmp (inclTable[ii].name, get_last_source_file ()) == 0) |
c5933f6d JB |
675 | { |
676 | /* The entry in the include table refers to the main source | |
581e13c1 | 677 | file. Add the lines to the main subfile. */ |
c5933f6d JB |
678 | |
679 | main_source_baseline = inclTable[ii].funStartLine; | |
680 | enter_line_range | |
681 | (&main_subfile, inclTable[ii].begin, inclTable[ii].end, | |
682 | start, 0, &main_source_baseline); | |
683 | inclTable[ii].subfile = &main_subfile; | |
684 | } | |
685 | else | |
686 | { | |
c5933f6d | 687 | /* Have a new subfile for the include file. */ |
c906108c | 688 | |
c5933f6d JB |
689 | tmpSubfile = inclTable[ii].subfile = |
690 | (struct subfile *) xmalloc (sizeof (struct subfile)); | |
c906108c | 691 | |
c5933f6d JB |
692 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
693 | firstLine = &(inclTable[ii].funStartLine); | |
694 | ||
695 | /* Enter include file's lines now. */ | |
696 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
697 | inclTable[ii].end, start, 0, firstLine); | |
698 | } | |
c906108c SS |
699 | |
700 | if (offset <= inclTable[ii].end) | |
7a78ae4e | 701 | offset = inclTable[ii].end + linesz; |
c906108c SS |
702 | } |
703 | ||
704 | /* All the include files' line have been processed at this point. Now, | |
c5aa993b | 705 | enter remaining lines of the main file, if any left. */ |
7a78ae4e | 706 | if (offset < max_offset + 1 - linesz) |
c906108c | 707 | { |
c5aa993b | 708 | enter_line_range (&main_subfile, offset, 0, start, end, |
c906108c SS |
709 | &main_source_baseline); |
710 | } | |
711 | } | |
712 | ||
713 | /* Process main file's line numbers. */ | |
714 | if (main_subfile.line_vector) | |
715 | { | |
716 | struct linetable *lineTb, *lv; | |
717 | ||
718 | lv = main_subfile.line_vector; | |
719 | ||
581e13c1 MS |
720 | /* Line numbers are not necessarily ordered. xlc compilation will |
721 | put static function to the end. */ | |
c906108c SS |
722 | |
723 | lineTb = arrange_linetable (lv); | |
724 | if (lv == lineTb) | |
725 | { | |
726 | current_subfile->line_vector = (struct linetable *) | |
727 | xrealloc (lv, (sizeof (struct linetable) | |
728 | + lv->nitems * sizeof (struct linetable_entry))); | |
729 | } | |
730 | else | |
731 | { | |
b8c9b27d | 732 | xfree (lv); |
c906108c SS |
733 | current_subfile->line_vector = lineTb; |
734 | } | |
735 | ||
c5aa993b | 736 | current_subfile->line_vector_length = |
c906108c SS |
737 | current_subfile->line_vector->nitems; |
738 | } | |
739 | ||
740 | /* Now, process included files' line numbers. */ | |
741 | ||
c5aa993b | 742 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c | 743 | { |
c5933f6d | 744 | if (inclTable[ii].subfile != ((struct subfile *) &main_subfile) |
3e43a32a MS |
745 | && (inclTable[ii].subfile)->line_vector) /* Useless if!!! |
746 | FIXMEmgo */ | |
c906108c SS |
747 | { |
748 | struct linetable *lineTb, *lv; | |
749 | ||
750 | lv = (inclTable[ii].subfile)->line_vector; | |
751 | ||
581e13c1 MS |
752 | /* Line numbers are not necessarily ordered. xlc compilation will |
753 | put static function to the end. */ | |
c906108c SS |
754 | |
755 | lineTb = arrange_linetable (lv); | |
756 | ||
757 | push_subfile (); | |
758 | ||
759 | /* For the same include file, we might want to have more than one | |
760 | subfile. This happens if we have something like: | |
761 | ||
c5aa993b JM |
762 | ...... |
763 | #include "foo.h" | |
764 | ...... | |
765 | #include "foo.h" | |
766 | ...... | |
c906108c | 767 | |
581e13c1 | 768 | while foo.h including code in it. (stupid but possible) |
c906108c SS |
769 | Since start_subfile() looks at the name and uses an |
770 | existing one if finds, we need to provide a fake name and | |
771 | fool it. */ | |
772 | ||
773 | #if 0 | |
c5aa993b | 774 | start_subfile (inclTable[ii].name, (char *) 0); |
c906108c SS |
775 | #else |
776 | { | |
777 | /* Pick a fake name that will produce the same results as this | |
778 | one when passed to deduce_language_from_filename. Kludge on | |
779 | top of kludge. */ | |
780 | char *fakename = strrchr (inclTable[ii].name, '.'); | |
a109c7c1 | 781 | |
c906108c SS |
782 | if (fakename == NULL) |
783 | fakename = " ?"; | |
c5aa993b | 784 | start_subfile (fakename, (char *) 0); |
b8c9b27d | 785 | xfree (current_subfile->name); |
c906108c | 786 | } |
c2d11a7d | 787 | current_subfile->name = xstrdup (inclTable[ii].name); |
c906108c SS |
788 | #endif |
789 | ||
790 | if (lv == lineTb) | |
791 | { | |
792 | current_subfile->line_vector = | |
793 | (struct linetable *) xrealloc | |
c5aa993b JM |
794 | (lv, (sizeof (struct linetable) |
795 | + lv->nitems * sizeof (struct linetable_entry))); | |
c906108c SS |
796 | |
797 | } | |
798 | else | |
799 | { | |
b8c9b27d | 800 | xfree (lv); |
c906108c SS |
801 | current_subfile->line_vector = lineTb; |
802 | } | |
803 | ||
c5aa993b | 804 | current_subfile->line_vector_length = |
c906108c | 805 | current_subfile->line_vector->nitems; |
c5aa993b | 806 | start_subfile (pop_subfile (), (char *) 0); |
c906108c SS |
807 | } |
808 | } | |
809 | ||
c5aa993b | 810 | return_after_cleanup: |
c906108c SS |
811 | |
812 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
813 | inclIndx = 0; | |
814 | ||
815 | /* Start with a fresh subfile structure for the next file. */ | |
816 | memset (&main_subfile, '\0', sizeof (struct subfile)); | |
817 | } | |
818 | ||
c295b2e5 | 819 | static void |
f56ce883 | 820 | aix_process_linenos (struct objfile *objfile) |
c906108c | 821 | { |
316a8b21 TG |
822 | /* There is no linenos to read if there are only dwarf info. */ |
823 | if (this_symtab_psymtab == NULL) | |
824 | return; | |
825 | ||
581e13c1 | 826 | /* Process line numbers and enter them into line vector. */ |
c906108c SS |
827 | process_linenos (last_source_start_addr, cur_src_end_addr); |
828 | } | |
829 | ||
830 | ||
831 | /* Enter a given range of lines into the line vector. | |
832 | can be called in the following two ways: | |
3e43a32a MS |
833 | enter_line_range (subfile, beginoffset, endoffset, |
834 | startaddr, 0, firstLine) or | |
835 | enter_line_range (subfile, beginoffset, 0, | |
836 | startaddr, endaddr, firstLine) | |
c906108c SS |
837 | |
838 | endoffset points to the last line table entry that we should pay | |
839 | attention to. */ | |
840 | ||
841 | static void | |
3e43a32a MS |
842 | enter_line_range (struct subfile *subfile, unsigned beginoffset, |
843 | unsigned endoffset, /* offsets to line table */ | |
fba45db2 KB |
844 | CORE_ADDR startaddr, /* offsets to line table */ |
845 | CORE_ADDR endaddr, unsigned *firstLine) | |
c906108c | 846 | { |
5c80ed9d | 847 | struct objfile *objfile = this_symtab_objfile; |
fbf65064 | 848 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
849 | unsigned int curoffset; |
850 | CORE_ADDR addr; | |
7a78ae4e | 851 | void *ext_lnno; |
c906108c SS |
852 | struct internal_lineno int_lnno; |
853 | unsigned int limit_offset; | |
854 | bfd *abfd; | |
7a78ae4e | 855 | int linesz; |
c906108c SS |
856 | |
857 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) | |
858 | return; | |
859 | curoffset = beginoffset; | |
b8b98ad1 | 860 | limit_offset = XCOFF_DATA (objfile)->max_lineno_offset; |
c906108c SS |
861 | |
862 | if (endoffset != 0) | |
863 | { | |
864 | if (endoffset >= limit_offset) | |
865 | { | |
23136709 | 866 | complaint (&symfile_complaints, |
e2e0b3e5 | 867 | _("Bad line table offset in C_EINCL directive")); |
c906108c SS |
868 | return; |
869 | } | |
870 | limit_offset = endoffset; | |
871 | } | |
872 | else | |
873 | limit_offset -= 1; | |
7a78ae4e | 874 | |
fbf65064 | 875 | abfd = objfile->obfd; |
7a78ae4e ND |
876 | linesz = coff_data (abfd)->local_linesz; |
877 | ext_lnno = alloca (linesz); | |
c906108c SS |
878 | |
879 | while (curoffset <= limit_offset) | |
880 | { | |
881 | bfd_seek (abfd, curoffset, SEEK_SET); | |
3a42e9d0 | 882 | bfd_bread (ext_lnno, linesz, abfd); |
7a78ae4e | 883 | bfd_coff_swap_lineno_in (abfd, ext_lnno, &int_lnno); |
c906108c SS |
884 | |
885 | /* Find the address this line represents. */ | |
886 | addr = (int_lnno.l_lnno | |
887 | ? int_lnno.l_addr.l_paddr | |
888 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
fbf65064 | 889 | addr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
890 | |
891 | if (addr < startaddr || (endaddr && addr >= endaddr)) | |
892 | return; | |
893 | ||
894 | if (int_lnno.l_lnno == 0) | |
895 | { | |
896 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
fbf65064 | 897 | record_line (subfile, 0, gdbarch_addr_bits_remove (gdbarch, addr)); |
c906108c SS |
898 | --(*firstLine); |
899 | } | |
900 | else | |
fbf65064 UW |
901 | record_line (subfile, *firstLine + int_lnno.l_lnno, |
902 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
7a78ae4e | 903 | curoffset += linesz; |
c906108c SS |
904 | } |
905 | } | |
906 | ||
907 | ||
908 | /* Save the vital information for use when closing off the current file. | |
909 | NAME is the file name the symbols came from, START_ADDR is the first | |
910 | text address for the file, and SIZE is the number of bytes of text. */ | |
911 | ||
912 | #define complete_symtab(name, start_addr) { \ | |
46212e0b | 913 | set_last_source_file (name); \ |
1b36a34b | 914 | last_source_start_addr = start_addr; \ |
c906108c SS |
915 | } |
916 | ||
917 | ||
918 | /* Refill the symbol table input buffer | |
919 | and set the variables that control fetching entries from it. | |
920 | Reports an error if no data available. | |
921 | This function can read past the end of the symbol table | |
922 | (into the string table) but this does no harm. */ | |
923 | ||
ec92004f JB |
924 | /* Create a new minimal symbol (using prim_record_minimal_symbol_and_info). |
925 | ||
4d1eb6b4 JB |
926 | Creation of all new minimal symbols should go through this function |
927 | rather than calling the various prim_record_[...] functions in order | |
928 | to make sure that all symbol addresses get properly relocated. | |
929 | ||
ec92004f JB |
930 | Arguments are: |
931 | ||
932 | NAME - the symbol's name (but if NAME starts with a period, that | |
933 | leading period is discarded). | |
4d1eb6b4 JB |
934 | ADDRESS - the symbol's address, prior to relocation. This function |
935 | relocates the address before recording the minimal symbol. | |
ec92004f JB |
936 | MS_TYPE - the symbol's type. |
937 | N_SCNUM - the symbol's XCOFF section number. | |
938 | OBJFILE - the objfile associated with the minimal symbol. */ | |
c906108c | 939 | |
ec92004f JB |
940 | static void |
941 | record_minimal_symbol (const char *name, CORE_ADDR address, | |
942 | enum minimal_symbol_type ms_type, | |
943 | int n_scnum, | |
944 | struct objfile *objfile) | |
945 | { | |
4d1eb6b4 JB |
946 | int section = secnum_to_section (n_scnum, objfile); |
947 | ||
ec92004f JB |
948 | if (name[0] == '.') |
949 | ++name; | |
950 | ||
ec92004f | 951 | prim_record_minimal_symbol_and_info (name, address, ms_type, |
e6dc44a8 TT |
952 | secnum_to_section (n_scnum, objfile), |
953 | objfile); | |
ec92004f | 954 | } |
c906108c | 955 | |
581e13c1 MS |
956 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
957 | nested. At any given time, a symbol can only be in one static block. | |
958 | This is the base address of current static block, zero if non exists. */ | |
c5aa993b | 959 | |
c906108c SS |
960 | static int static_block_base = 0; |
961 | ||
962 | /* Section number for the current static block. */ | |
963 | ||
964 | static int static_block_section = -1; | |
965 | ||
581e13c1 | 966 | /* true if space for symbol name has been allocated. */ |
c906108c SS |
967 | |
968 | static int symname_alloced = 0; | |
969 | ||
970 | /* Next symbol to read. Pointer into raw seething symbol table. */ | |
971 | ||
972 | static char *raw_symbol; | |
973 | ||
974 | /* This is the function which stabsread.c calls to get symbol | |
975 | continuations. */ | |
976 | ||
977 | static char * | |
fba45db2 | 978 | xcoff_next_symbol_text (struct objfile *objfile) |
c906108c SS |
979 | { |
980 | struct internal_syment symbol; | |
c906108c | 981 | char *retval; |
a109c7c1 | 982 | |
581e13c1 | 983 | /* FIXME: is this the same as the passed arg? */ |
5c80ed9d TT |
984 | if (this_symtab_objfile) |
985 | objfile = this_symtab_objfile; | |
c906108c SS |
986 | |
987 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); | |
988 | if (symbol.n_zeroes) | |
989 | { | |
e2e0b3e5 | 990 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
991 | |
992 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 993 | code does something reasonable. */ |
c906108c SS |
994 | retval = ""; |
995 | } | |
996 | else if (symbol.n_sclass & 0x80) | |
997 | { | |
b8b98ad1 | 998 | retval = XCOFF_DATA (objfile)->debugsec + symbol.n_offset; |
3e43a32a | 999 | raw_symbol += coff_data (objfile->obfd)->local_symesz; |
c906108c SS |
1000 | ++symnum; |
1001 | } | |
1002 | else | |
1003 | { | |
e2e0b3e5 | 1004 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
1005 | |
1006 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 1007 | code does something reasonable. */ |
c906108c SS |
1008 | retval = ""; |
1009 | } | |
1010 | return retval; | |
1011 | } | |
1012 | ||
1013 | /* Read symbols for a given partial symbol table. */ | |
1014 | ||
1015 | static void | |
5c80ed9d | 1016 | read_xcoff_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 1017 | { |
c906108c | 1018 | bfd *abfd = objfile->obfd; |
581e13c1 | 1019 | char *raw_auxptr; /* Pointer to first raw aux entry for sym. */ |
b8b98ad1 TT |
1020 | struct coff_symfile_info *xcoff = XCOFF_DATA (objfile); |
1021 | char *strtbl = xcoff->strtbl; | |
1022 | char *debugsec = xcoff->debugsec; | |
554d387d | 1023 | const char *debugfmt = bfd_xcoff_is_xcoff64 (abfd) ? "XCOFF64" : "XCOFF"; |
c906108c SS |
1024 | |
1025 | struct internal_syment symbol[1]; | |
1026 | union internal_auxent main_aux; | |
1027 | struct coff_symbol cs[1]; | |
1028 | CORE_ADDR file_start_addr = 0; | |
1029 | CORE_ADDR file_end_addr = 0; | |
1030 | ||
1031 | int next_file_symnum = -1; | |
1032 | unsigned int max_symnum; | |
1033 | int just_started = 1; | |
1034 | int depth = 0; | |
086850b2 | 1035 | CORE_ADDR fcn_start_addr = 0; |
c906108c | 1036 | |
238ae9af | 1037 | struct coff_symbol fcn_stab_saved = { 0 }; |
c906108c | 1038 | |
581e13c1 | 1039 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
3672b1be | 1040 | union internal_auxent fcn_aux_saved = main_aux; |
c906108c SS |
1041 | struct context_stack *new; |
1042 | ||
581e13c1 | 1043 | char *filestring = " _start_ "; /* Name of the current file. */ |
c906108c | 1044 | |
40301fb7 | 1045 | const char *last_csect_name; /* Last seen csect's name. */ |
c906108c SS |
1046 | |
1047 | this_symtab_psymtab = pst; | |
5c80ed9d | 1048 | this_symtab_objfile = objfile; |
c906108c SS |
1049 | |
1050 | /* Get the appropriate COFF "constants" related to the file we're | |
581e13c1 | 1051 | handling. */ |
c906108c SS |
1052 | local_symesz = coff_data (abfd)->local_symesz; |
1053 | ||
46212e0b | 1054 | set_last_source_file (NULL); |
c906108c | 1055 | last_csect_name = 0; |
c906108c SS |
1056 | |
1057 | start_stabs (); | |
c5aa993b | 1058 | start_symtab (filestring, (char *) NULL, file_start_addr); |
7a78ae4e | 1059 | record_debugformat (debugfmt); |
c5aa993b | 1060 | symnum = ((struct symloc *) pst->read_symtab_private)->first_symnum; |
c906108c | 1061 | max_symnum = |
c5aa993b | 1062 | symnum + ((struct symloc *) pst->read_symtab_private)->numsyms; |
c906108c SS |
1063 | first_object_file_end = 0; |
1064 | ||
b8b98ad1 | 1065 | raw_symbol = xcoff->symtbl + symnum * local_symesz; |
c906108c SS |
1066 | |
1067 | while (symnum < max_symnum) | |
1068 | { | |
c906108c SS |
1069 | QUIT; /* make this command interruptable. */ |
1070 | ||
1071 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
581e13c1 | 1072 | /* read one symbol into `cs' structure. After processing the |
c5aa993b | 1073 | whole symbol table, only string table will be kept in memory, |
581e13c1 | 1074 | symbol table and debug section of xcoff will be freed. Thus |
c5aa993b | 1075 | we can mark symbols with names in string table as |
581e13c1 | 1076 | `alloced'. */ |
c906108c SS |
1077 | { |
1078 | int ii; | |
1079 | ||
1080 | /* Swap and align the symbol into a reasonable C structure. */ | |
1081 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1082 | ||
1083 | cs->c_symnum = symnum; | |
1084 | cs->c_naux = symbol->n_numaux; | |
1085 | if (symbol->n_zeroes) | |
1086 | { | |
1087 | symname_alloced = 0; | |
1088 | /* We must use the original, unswapped, name here so the name field | |
1089 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1090 | we use the new field, it gets overwritten for each symbol. */ | |
c5aa993b | 1091 | cs->c_name = ((struct external_syment *) raw_symbol)->e.e_name; |
c906108c SS |
1092 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1093 | '\0'-terminated. */ | |
1094 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1095 | { | |
1096 | char *p; | |
a109c7c1 | 1097 | |
4a146b47 | 1098 | p = obstack_alloc (&objfile->objfile_obstack, E_SYMNMLEN + 1); |
c906108c SS |
1099 | strncpy (p, cs->c_name, E_SYMNMLEN); |
1100 | p[E_SYMNMLEN] = '\0'; | |
1101 | cs->c_name = p; | |
1102 | symname_alloced = 1; | |
1103 | } | |
1104 | } | |
1105 | else if (symbol->n_sclass & 0x80) | |
1106 | { | |
1107 | cs->c_name = debugsec + symbol->n_offset; | |
1108 | symname_alloced = 0; | |
1109 | } | |
1110 | else | |
1111 | { | |
1112 | /* in string table */ | |
c5aa993b | 1113 | cs->c_name = strtbl + (int) symbol->n_offset; |
c906108c SS |
1114 | symname_alloced = 1; |
1115 | } | |
1116 | cs->c_value = symbol->n_value; | |
1117 | cs->c_sclass = symbol->n_sclass; | |
1118 | cs->c_secnum = symbol->n_scnum; | |
c5aa993b | 1119 | cs->c_type = (unsigned) symbol->n_type; |
c906108c | 1120 | |
7a78ae4e | 1121 | raw_symbol += local_symesz; |
c906108c SS |
1122 | ++symnum; |
1123 | ||
1124 | /* Save addr of first aux entry. */ | |
1125 | raw_auxptr = raw_symbol; | |
1126 | ||
1127 | /* Skip all the auxents associated with this symbol. */ | |
1128 | for (ii = symbol->n_numaux; ii; --ii) | |
1129 | { | |
1130 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1131 | ++symnum; | |
1132 | } | |
1133 | } | |
1134 | ||
581e13c1 | 1135 | /* if symbol name starts with ".$" or "$", ignore it. */ |
c906108c SS |
1136 | if (cs->c_name[0] == '$' |
1137 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1138 | continue; | |
1139 | ||
1140 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
1141 | { | |
46212e0b | 1142 | if (get_last_source_file ()) |
c906108c | 1143 | { |
3e43a32a MS |
1144 | pst->symtab = end_symtab (cur_src_end_addr, objfile, |
1145 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1146 | end_stabs (); |
1147 | } | |
1148 | ||
1149 | start_stabs (); | |
c5aa993b | 1150 | start_symtab ("_globals_", (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1151 | record_debugformat (debugfmt); |
c906108c | 1152 | cur_src_end_addr = first_object_file_end; |
581e13c1 | 1153 | /* Done with all files, everything from here on is globals. */ |
c906108c SS |
1154 | } |
1155 | ||
c906108c SS |
1156 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) |
1157 | && cs->c_naux == 1) | |
1158 | { | |
1159 | /* Dealing with a symbol with a csect entry. */ | |
1160 | ||
1161 | #define CSECT(PP) ((PP)->x_csect) | |
1162 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1163 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1164 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1165 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1166 | ||
1167 | /* Convert the auxent to something we can access. */ | |
1168 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1169 | 0, cs->c_naux, &main_aux); | |
1170 | ||
1171 | switch (CSECT_SMTYP (&main_aux)) | |
1172 | { | |
1173 | ||
1174 | case XTY_ER: | |
1175 | /* Ignore all external references. */ | |
1176 | continue; | |
1177 | ||
1178 | case XTY_SD: | |
1179 | /* A section description. */ | |
1180 | { | |
1181 | switch (CSECT_SCLAS (&main_aux)) | |
1182 | { | |
1183 | ||
1184 | case XMC_PR: | |
1185 | { | |
1186 | ||
1187 | /* A program csect is seen. We have to allocate one | |
c5aa993b JM |
1188 | symbol table for each program csect. Normally gdb |
1189 | prefers one symtab for each source file. In case | |
1190 | of AIX, one source file might include more than one | |
1191 | [PR] csect, and they don't have to be adjacent in | |
581e13c1 | 1192 | terms of the space they occupy in memory. Thus, one |
c5aa993b JM |
1193 | single source file might get fragmented in the |
1194 | memory and gdb's file start and end address | |
1195 | approach does not work! GCC (and I think xlc) seem | |
1196 | to put all the code in the unnamed program csect. */ | |
c906108c SS |
1197 | |
1198 | if (last_csect_name) | |
1199 | { | |
1200 | complete_symtab (filestring, file_start_addr); | |
1201 | cur_src_end_addr = file_end_addr; | |
3e43a32a MS |
1202 | end_symtab (file_end_addr, objfile, |
1203 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1204 | end_stabs (); |
1205 | start_stabs (); | |
1206 | /* Give all csects for this source file the same | |
1207 | name. */ | |
c5aa993b | 1208 | start_symtab (filestring, NULL, (CORE_ADDR) 0); |
7a78ae4e | 1209 | record_debugformat (debugfmt); |
c906108c SS |
1210 | } |
1211 | ||
1212 | /* If this is the very first csect seen, | |
581e13c1 | 1213 | basically `__start'. */ |
c906108c SS |
1214 | if (just_started) |
1215 | { | |
1216 | first_object_file_end | |
1217 | = cs->c_value + CSECT_LEN (&main_aux); | |
1218 | just_started = 0; | |
1219 | } | |
1220 | ||
1221 | file_start_addr = | |
1222 | cs->c_value + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1223 | SECT_OFF_TEXT (objfile)); |
c906108c SS |
1224 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); |
1225 | ||
40301fb7 JB |
1226 | if (cs->c_name && (cs->c_name[0] == '.' || cs->c_name[0] == '@')) |
1227 | last_csect_name = cs->c_name; | |
c906108c SS |
1228 | } |
1229 | continue; | |
1230 | ||
1231 | /* All other symbols are put into the minimal symbol | |
1232 | table only. */ | |
1233 | ||
1234 | case XMC_RW: | |
1235 | continue; | |
1236 | ||
1237 | case XMC_TC0: | |
1238 | continue; | |
1239 | ||
1240 | case XMC_TC: | |
1241 | continue; | |
1242 | ||
1243 | default: | |
1244 | /* Ignore the symbol. */ | |
1245 | continue; | |
1246 | } | |
1247 | } | |
1248 | break; | |
1249 | ||
1250 | case XTY_LD: | |
1251 | ||
1252 | switch (CSECT_SCLAS (&main_aux)) | |
1253 | { | |
1254 | case XMC_PR: | |
581e13c1 | 1255 | /* a function entry point. */ |
c906108c SS |
1256 | function_entry_point: |
1257 | ||
1258 | fcn_start_addr = cs->c_value; | |
1259 | ||
1260 | /* save the function header info, which will be used | |
581e13c1 | 1261 | when `.bf' is seen. */ |
c906108c SS |
1262 | fcn_cs_saved = *cs; |
1263 | fcn_aux_saved = main_aux; | |
1264 | continue; | |
1265 | ||
1266 | case XMC_GL: | |
581e13c1 | 1267 | /* shared library function trampoline code entry point. */ |
c906108c SS |
1268 | continue; |
1269 | ||
1270 | case XMC_DS: | |
1271 | /* The symbols often have the same names as debug symbols for | |
1272 | functions, and confuse lookup_symbol. */ | |
1273 | continue; | |
1274 | ||
1275 | default: | |
1276 | /* xlc puts each variable in a separate csect, so we get | |
1277 | an XTY_SD for each variable. But gcc puts several | |
1278 | variables in a csect, so that each variable only gets | |
581e13c1 | 1279 | an XTY_LD. This will typically be XMC_RW; I suspect |
c906108c SS |
1280 | XMC_RO and XMC_BS might be possible too. |
1281 | These variables are put in the minimal symbol table | |
1282 | only. */ | |
1283 | continue; | |
1284 | } | |
1285 | break; | |
1286 | ||
1287 | case XTY_CM: | |
1288 | /* Common symbols are put into the minimal symbol table only. */ | |
1289 | continue; | |
1290 | ||
1291 | default: | |
1292 | break; | |
1293 | } | |
1294 | } | |
1295 | ||
977adac5 ND |
1296 | /* If explicitly specified as a function, treat is as one. This check |
1297 | evaluates to true for @FIX* bigtoc CSECT symbols, so it must occur | |
1298 | after the above CSECT check. */ | |
1299 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
1300 | { | |
1301 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1302 | 0, cs->c_naux, &main_aux); | |
1303 | goto function_entry_point; | |
1304 | } | |
1305 | ||
c906108c SS |
1306 | switch (cs->c_sclass) |
1307 | { | |
c906108c SS |
1308 | case C_FILE: |
1309 | ||
1310 | /* c_value field contains symnum of next .file entry in table | |
581e13c1 | 1311 | or symnum of first global after last .file. */ |
c906108c SS |
1312 | |
1313 | next_file_symnum = cs->c_value; | |
1314 | ||
1315 | /* Complete symbol table for last object file containing | |
581e13c1 | 1316 | debugging information. */ |
c906108c SS |
1317 | |
1318 | /* Whether or not there was a csect in the previous file, we | |
1319 | have to call `end_stabs' and `start_stabs' to reset | |
1320 | type_vector, line_vector, etc. structures. */ | |
1321 | ||
1322 | complete_symtab (filestring, file_start_addr); | |
1323 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1324 | end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1325 | end_stabs (); |
1326 | ||
3e43a32a MS |
1327 | /* XCOFF, according to the AIX 3.2 documentation, puts the |
1328 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
1329 | do things the standard COFF way and put it in the auxent. | |
1330 | We use the auxent if the symbol is ".file" and an auxent | |
1331 | exists, otherwise use the symbol itself. Simple | |
1332 | enough. */ | |
c906108c SS |
1333 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) |
1334 | { | |
1335 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1336 | 0, cs->c_naux, &main_aux); | |
1337 | filestring = coff_getfilename (&main_aux, objfile); | |
1338 | } | |
1339 | else | |
1340 | filestring = cs->c_name; | |
1341 | ||
1342 | start_stabs (); | |
c5aa993b | 1343 | start_symtab (filestring, (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1344 | record_debugformat (debugfmt); |
c906108c SS |
1345 | last_csect_name = 0; |
1346 | ||
581e13c1 | 1347 | /* reset file start and end addresses. A compilation unit |
3e43a32a | 1348 | with no text (only data) should have zero file |
581e13c1 | 1349 | boundaries. */ |
c906108c SS |
1350 | file_start_addr = file_end_addr = 0; |
1351 | break; | |
1352 | ||
1353 | case C_FUN: | |
1354 | fcn_stab_saved = *cs; | |
1355 | break; | |
1356 | ||
1357 | case C_FCN: | |
7ecb6532 | 1358 | if (strcmp (cs->c_name, ".bf") == 0) |
c906108c SS |
1359 | { |
1360 | CORE_ADDR off = ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1361 | SECT_OFF_TEXT (objfile)); |
a109c7c1 | 1362 | |
c906108c SS |
1363 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1364 | 0, cs->c_naux, &main_aux); | |
1365 | ||
1366 | within_function = 1; | |
1367 | ||
1368 | new = push_context (0, fcn_start_addr + off); | |
1369 | ||
c5aa993b | 1370 | new->name = define_symbol |
c906108c SS |
1371 | (fcn_cs_saved.c_value + off, |
1372 | fcn_stab_saved.c_name, 0, 0, objfile); | |
1373 | if (new->name != NULL) | |
b8fbeb18 | 1374 | SYMBOL_SECTION (new->name) = SECT_OFF_TEXT (objfile); |
c906108c | 1375 | } |
7ecb6532 | 1376 | else if (strcmp (cs->c_name, ".ef") == 0) |
c906108c | 1377 | { |
c906108c SS |
1378 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1379 | 0, cs->c_naux, &main_aux); | |
1380 | ||
1381 | /* The value of .ef is the address of epilogue code; | |
c5aa993b | 1382 | not useful for gdb. */ |
c906108c | 1383 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
c5aa993b | 1384 | contains number of lines to '}' */ |
c906108c SS |
1385 | |
1386 | if (context_stack_depth <= 0) | |
581e13c1 | 1387 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1388 | ef_complaint (cs->c_symnum); |
c906108c SS |
1389 | within_function = 0; |
1390 | break; | |
1391 | } | |
1392 | new = pop_context (); | |
1393 | /* Stack must be empty now. */ | |
1394 | if (context_stack_depth > 0 || new == NULL) | |
1395 | { | |
23136709 | 1396 | ef_complaint (cs->c_symnum); |
c906108c SS |
1397 | within_function = 0; |
1398 | break; | |
1399 | } | |
1400 | ||
1401 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1402 | new->start_addr, | |
1403 | (fcn_cs_saved.c_value | |
1404 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1405 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1406 | SECT_OFF_TEXT (objfile))), |
c906108c SS |
1407 | objfile); |
1408 | within_function = 0; | |
1409 | } | |
1410 | break; | |
1411 | ||
1412 | case C_BSTAT: | |
1413 | /* Begin static block. */ | |
1414 | { | |
1415 | struct internal_syment symbol; | |
1416 | ||
1417 | read_symbol (&symbol, cs->c_value); | |
1418 | static_block_base = symbol.n_value; | |
1419 | static_block_section = | |
1420 | secnum_to_section (symbol.n_scnum, objfile); | |
1421 | } | |
1422 | break; | |
1423 | ||
1424 | case C_ESTAT: | |
1425 | /* End of static block. */ | |
1426 | static_block_base = 0; | |
1427 | static_block_section = -1; | |
1428 | break; | |
1429 | ||
1430 | case C_ARG: | |
1431 | case C_REGPARM: | |
1432 | case C_REG: | |
1433 | case C_TPDEF: | |
1434 | case C_STRTAG: | |
1435 | case C_UNTAG: | |
1436 | case C_ENTAG: | |
1437 | { | |
3e43a32a MS |
1438 | complaint (&symfile_complaints, |
1439 | _("Unrecognized storage class %d."), | |
23136709 | 1440 | cs->c_sclass); |
c906108c SS |
1441 | } |
1442 | break; | |
1443 | ||
1444 | case C_LABEL: | |
1445 | case C_NULL: | |
1446 | /* Ignore these. */ | |
1447 | break; | |
1448 | ||
1449 | case C_HIDEXT: | |
1450 | case C_STAT: | |
1451 | break; | |
1452 | ||
1453 | case C_BINCL: | |
1454 | /* beginning of include file */ | |
1455 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
581e13c1 MS |
1456 | order. Thus, when wee see them, we might not know enough info |
1457 | to process them. Thus, we'll be saving them into a table | |
1458 | (inclTable) and postpone their processing. */ | |
c906108c SS |
1459 | |
1460 | record_include_begin (cs); | |
1461 | break; | |
1462 | ||
1463 | case C_EINCL: | |
1464 | /* End of include file. */ | |
1465 | /* See the comment after case C_BINCL. */ | |
1466 | record_include_end (cs); | |
1467 | break; | |
1468 | ||
1469 | case C_BLOCK: | |
7ecb6532 | 1470 | if (strcmp (cs->c_name, ".bb") == 0) |
c906108c SS |
1471 | { |
1472 | depth++; | |
1473 | new = push_context (depth, | |
1474 | (cs->c_value | |
1475 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1476 | SECT_OFF_TEXT (objfile)))); |
c906108c | 1477 | } |
7ecb6532 | 1478 | else if (strcmp (cs->c_name, ".eb") == 0) |
c906108c SS |
1479 | { |
1480 | if (context_stack_depth <= 0) | |
581e13c1 | 1481 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1482 | eb_complaint (cs->c_symnum); |
c906108c SS |
1483 | break; |
1484 | } | |
1485 | new = pop_context (); | |
1486 | if (depth-- != new->depth) | |
1487 | { | |
23136709 | 1488 | eb_complaint (cs->c_symnum); |
c906108c SS |
1489 | break; |
1490 | } | |
1491 | if (local_symbols && context_stack_depth > 0) | |
1492 | { | |
1493 | /* Make a block for the local symbols within. */ | |
1494 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1495 | new->start_addr, | |
1496 | (cs->c_value | |
1497 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1498 | SECT_OFF_TEXT (objfile))), |
c906108c SS |
1499 | objfile); |
1500 | } | |
1501 | local_symbols = new->locals; | |
1502 | } | |
1503 | break; | |
1504 | ||
1505 | default: | |
1506 | process_xcoff_symbol (cs, objfile); | |
1507 | break; | |
1508 | } | |
1509 | } | |
1510 | ||
46212e0b | 1511 | if (get_last_source_file ()) |
c906108c SS |
1512 | { |
1513 | struct symtab *s; | |
1514 | ||
1515 | complete_symtab (filestring, file_start_addr); | |
1516 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1517 | s = end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1518 | /* When reading symbols for the last C_FILE of the objfile, try |
1519 | to make sure that we set pst->symtab to the symtab for the | |
1520 | file, not to the _globals_ symtab. I'm not sure whether this | |
1521 | actually works right or when/if it comes up. */ | |
1522 | if (pst->symtab == NULL) | |
1523 | pst->symtab = s; | |
1524 | end_stabs (); | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
1529 | (SYMBOL2) = (struct symbol *) \ | |
4a146b47 | 1530 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); \ |
c906108c | 1531 | *(SYMBOL2) = *(SYMBOL1); |
c5aa993b JM |
1532 | |
1533 | ||
c906108c | 1534 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ |
10f0c4bb TT |
1535 | ((ALLOCED) ? (NAME) : obstack_copy0 (&objfile->objfile_obstack, \ |
1536 | (NAME), strlen (NAME))) | |
c906108c SS |
1537 | |
1538 | ||
581e13c1 | 1539 | /* process one xcoff symbol. */ |
c906108c SS |
1540 | |
1541 | static struct symbol * | |
aa1ee363 | 1542 | process_xcoff_symbol (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
1543 | { |
1544 | struct symbol onesymbol; | |
52f0bd74 | 1545 | struct symbol *sym = &onesymbol; |
c906108c SS |
1546 | struct symbol *sym2 = NULL; |
1547 | char *name, *pp; | |
1548 | ||
1549 | int sec; | |
1550 | CORE_ADDR off; | |
1551 | ||
1552 | if (cs->c_secnum < 0) | |
1553 | { | |
1554 | /* The value is a register number, offset within a frame, etc., | |
c5aa993b | 1555 | and does not get relocated. */ |
c906108c SS |
1556 | off = 0; |
1557 | sec = -1; | |
1558 | } | |
1559 | else | |
1560 | { | |
1561 | sec = secnum_to_section (cs->c_secnum, objfile); | |
1562 | off = ANOFFSET (objfile->section_offsets, sec); | |
1563 | } | |
1564 | ||
1565 | name = cs->c_name; | |
1566 | if (name[0] == '.') | |
1567 | ++name; | |
1568 | ||
e623cf5d | 1569 | initialize_symbol (sym); |
c906108c SS |
1570 | |
1571 | /* default assumptions */ | |
7a78ae4e | 1572 | SYMBOL_VALUE_ADDRESS (sym) = cs->c_value + off; |
176620f1 | 1573 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1574 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); |
1575 | ||
1576 | if (ISFCN (cs->c_type)) | |
1577 | { | |
1578 | /* At this point, we don't know the type of the function. This | |
c5aa993b JM |
1579 | will be patched with the type from its stab entry later on in |
1580 | patch_block_stabs (), unless the file was compiled without -g. */ | |
c906108c | 1581 | |
3567439c | 1582 | SYMBOL_SET_LINKAGE_NAME (sym, SYMNAME_ALLOC (name, symname_alloced)); |
46bf5051 | 1583 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_text_symbol; |
c906108c | 1584 | |
f1e6e072 | 1585 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1586 | SYMBOL_DUP (sym, sym2); |
1587 | ||
1588 | if (cs->c_sclass == C_EXT) | |
1589 | add_symbol_to_list (sym2, &global_symbols); | |
1590 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1591 | add_symbol_to_list (sym2, &file_symbols); | |
1592 | } | |
1593 | else | |
1594 | { | |
581e13c1 | 1595 | /* In case we can't figure out the type, provide default. */ |
46bf5051 | 1596 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
1597 | |
1598 | switch (cs->c_sclass) | |
1599 | { | |
1600 | #if 0 | |
c5aa993b JM |
1601 | /* The values of functions and global symbols are now resolved |
1602 | via the global_sym_chain in stabsread.c. */ | |
c906108c SS |
1603 | case C_FUN: |
1604 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1605 | add_stab_to_list (name, &global_stabs); | |
1606 | else | |
1607 | add_stab_to_list (name, &file_stabs); | |
1608 | break; | |
1609 | ||
1610 | case C_GSYM: | |
1611 | add_stab_to_list (name, &global_stabs); | |
1612 | break; | |
1613 | #endif | |
1614 | ||
1615 | case C_BCOMM: | |
1616 | common_block_start (cs->c_name, objfile); | |
1617 | break; | |
1618 | ||
1619 | case C_ECOMM: | |
1620 | common_block_end (objfile); | |
1621 | break; | |
1622 | ||
1623 | default: | |
e2e0b3e5 | 1624 | complaint (&symfile_complaints, _("Unexpected storage class: %d"), |
23136709 | 1625 | cs->c_sclass); |
c906108c SS |
1626 | /* FALLTHROUGH */ |
1627 | ||
1628 | case C_DECL: | |
1629 | case C_PSYM: | |
1630 | case C_RPSYM: | |
1631 | case C_ECOML: | |
1632 | case C_LSYM: | |
1633 | case C_RSYM: | |
1634 | case C_GSYM: | |
1635 | ||
1636 | { | |
1637 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1638 | if (sym != NULL) | |
1639 | { | |
1640 | SYMBOL_SECTION (sym) = sec; | |
1641 | } | |
1642 | return sym; | |
1643 | } | |
1644 | ||
1645 | case C_STSYM: | |
1646 | ||
1647 | /* For xlc (not GCC), the 'V' symbol descriptor is used for | |
1648 | all statics and we need to distinguish file-scope versus | |
1649 | function-scope using within_function. We do this by | |
1650 | changing the string we pass to define_symbol to use 'S' | |
1651 | where we need to, which is not necessarily super-clean, | |
1652 | but seems workable enough. */ | |
1653 | ||
9b13a2db PM |
1654 | if (*name == ':') |
1655 | return NULL; | |
1656 | ||
ed4b0e6a | 1657 | pp = strchr (name, ':'); |
9b13a2db | 1658 | if (pp == NULL) |
c906108c SS |
1659 | return NULL; |
1660 | ||
1661 | ++pp; | |
1662 | if (*pp == 'V' && !within_function) | |
1663 | *pp = 'S'; | |
1664 | sym = define_symbol ((cs->c_value | |
1665 | + ANOFFSET (objfile->section_offsets, | |
1666 | static_block_section)), | |
1667 | cs->c_name, 0, 0, objfile); | |
1668 | if (sym != NULL) | |
1669 | { | |
7a78ae4e | 1670 | SYMBOL_VALUE_ADDRESS (sym) += static_block_base; |
c906108c SS |
1671 | SYMBOL_SECTION (sym) = static_block_section; |
1672 | } | |
1673 | return sym; | |
1674 | ||
1675 | } | |
1676 | } | |
1677 | return sym2; | |
1678 | } | |
1679 | ||
1680 | /* Extract the file name from the aux entry of a C_FILE symbol. | |
1681 | Result is in static storage and is only good for temporary use. */ | |
1682 | ||
1683 | static char * | |
fba45db2 | 1684 | coff_getfilename (union internal_auxent *aux_entry, struct objfile *objfile) |
c906108c SS |
1685 | { |
1686 | static char buffer[BUFSIZ]; | |
1687 | ||
1688 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
b8b98ad1 TT |
1689 | strcpy (buffer, (XCOFF_DATA (objfile)->strtbl |
1690 | + aux_entry->x_file.x_n.x_offset)); | |
c906108c SS |
1691 | else |
1692 | { | |
1693 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1694 | buffer[FILNMLEN] = '\0'; | |
1695 | } | |
1696 | return (buffer); | |
1697 | } | |
1698 | ||
1699 | /* Set *SYMBOL to symbol number symno in symtbl. */ | |
1700 | static void | |
fba45db2 | 1701 | read_symbol (struct internal_syment *symbol, int symno) |
c906108c | 1702 | { |
5c80ed9d | 1703 | struct coff_symfile_info *xcoff = XCOFF_DATA (this_symtab_objfile); |
b8b98ad1 TT |
1704 | int nsyms = xcoff->symtbl_num_syms; |
1705 | char *stbl = xcoff->symtbl; | |
a109c7c1 | 1706 | |
c906108c SS |
1707 | if (symno < 0 || symno >= nsyms) |
1708 | { | |
e2e0b3e5 | 1709 | complaint (&symfile_complaints, _("Invalid symbol offset")); |
c906108c SS |
1710 | symbol->n_value = 0; |
1711 | symbol->n_scnum = -1; | |
1712 | return; | |
1713 | } | |
5c80ed9d | 1714 | bfd_coff_swap_sym_in (this_symtab_objfile->obfd, |
c5aa993b | 1715 | stbl + (symno * local_symesz), |
c906108c SS |
1716 | symbol); |
1717 | } | |
c5aa993b | 1718 | |
c906108c SS |
1719 | /* Get value corresponding to symbol number symno in symtbl. */ |
1720 | ||
470d5666 | 1721 | static CORE_ADDR |
fba45db2 | 1722 | read_symbol_nvalue (int symno) |
c906108c SS |
1723 | { |
1724 | struct internal_syment symbol[1]; | |
1725 | ||
1726 | read_symbol (symbol, symno); | |
c5aa993b | 1727 | return symbol->n_value; |
c906108c SS |
1728 | } |
1729 | ||
1730 | ||
1731 | /* Find the address of the function corresponding to symno, where | |
1732 | symno is the symbol pointed to by the linetable. */ | |
1733 | ||
1734 | static int | |
fba45db2 | 1735 | read_symbol_lineno (int symno) |
c906108c | 1736 | { |
5c80ed9d | 1737 | struct objfile *objfile = this_symtab_objfile; |
7af35dad | 1738 | int xcoff64 = bfd_xcoff_is_xcoff64 (objfile->obfd); |
7a78ae4e | 1739 | |
b8b98ad1 | 1740 | struct coff_symfile_info *info = XCOFF_DATA (objfile); |
7a78ae4e ND |
1741 | int nsyms = info->symtbl_num_syms; |
1742 | char *stbl = info->symtbl; | |
1743 | char *strtbl = info->strtbl; | |
1744 | ||
c906108c SS |
1745 | struct internal_syment symbol[1]; |
1746 | union internal_auxent main_aux[1]; | |
1747 | ||
1748 | if (symno < 0) | |
1749 | { | |
23136709 | 1750 | bf_notfound_complaint (); |
c906108c SS |
1751 | return 0; |
1752 | } | |
1753 | ||
1754 | /* Note that just searching for a short distance (e.g. 50 symbols) | |
1755 | is not enough, at least in the following case. | |
1756 | ||
1757 | .extern foo | |
1758 | [many .stabx entries] | |
1759 | [a few functions, referring to foo] | |
1760 | .globl foo | |
1761 | .bf | |
1762 | ||
1763 | What happens here is that the assembler moves the .stabx entries | |
1764 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1765 | all the stabx entries. See PR gdb/2222. */ | |
1766 | ||
1767 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1768 | If I understand things correctly it would need to be done only for | |
1769 | the duration of a single psymtab to symtab conversion. */ | |
1770 | while (symno < nsyms) | |
1771 | { | |
1772 | bfd_coff_swap_sym_in (symfile_bfd, | |
1773 | stbl + (symno * local_symesz), symbol); | |
7a78ae4e ND |
1774 | if (symbol->n_sclass == C_FCN) |
1775 | { | |
1776 | char *name = xcoff64 ? strtbl + symbol->n_offset : symbol->n_name; | |
a109c7c1 | 1777 | |
7ecb6532 | 1778 | if (strcmp (name, ".bf") == 0) |
7a78ae4e ND |
1779 | goto gotit; |
1780 | } | |
c906108c SS |
1781 | symno += symbol->n_numaux + 1; |
1782 | } | |
1783 | ||
23136709 | 1784 | bf_notfound_complaint (); |
c906108c SS |
1785 | return 0; |
1786 | ||
1787 | gotit: | |
581e13c1 | 1788 | /* Take aux entry and return its lineno. */ |
c906108c | 1789 | symno++; |
7a78ae4e | 1790 | bfd_coff_swap_aux_in (objfile->obfd, stbl + symno * local_symesz, |
c906108c SS |
1791 | symbol->n_type, symbol->n_sclass, |
1792 | 0, symbol->n_numaux, main_aux); | |
1793 | ||
1794 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1795 | } | |
1796 | ||
581e13c1 | 1797 | /* Support for line number handling. */ |
c906108c SS |
1798 | |
1799 | /* This function is called for every section; it finds the outer limits | |
1800 | * of the line table (minimum and maximum file offset) so that the | |
1801 | * mainline code can read the whole thing for efficiency. | |
1802 | */ | |
1803 | static void | |
7be0c536 | 1804 | find_linenos (struct bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
1805 | { |
1806 | struct coff_symfile_info *info; | |
1807 | int size, count; | |
1808 | file_ptr offset, maxoff; | |
1809 | ||
1810 | count = asect->lineno_count; | |
1811 | ||
7ecb6532 | 1812 | if (strcmp (asect->name, ".text") != 0 || count == 0) |
c906108c SS |
1813 | return; |
1814 | ||
1815 | size = count * coff_data (abfd)->local_linesz; | |
c5aa993b | 1816 | info = (struct coff_symfile_info *) vpinfo; |
c906108c SS |
1817 | offset = asect->line_filepos; |
1818 | maxoff = offset + size; | |
1819 | ||
1820 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1821 | info->min_lineno_offset = offset; | |
1822 | ||
1823 | if (maxoff > info->max_lineno_offset) | |
1824 | info->max_lineno_offset = maxoff; | |
1825 | } | |
1826 | \f | |
c906108c | 1827 | static void |
5c80ed9d | 1828 | xcoff_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst) |
c906108c SS |
1829 | { |
1830 | struct cleanup *old_chain; | |
1831 | int i; | |
c5aa993b | 1832 | |
c906108c SS |
1833 | if (!pst) |
1834 | return; | |
1835 | ||
1836 | if (pst->readin) | |
1837 | { | |
1838 | fprintf_unfiltered | |
1839 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1840 | pst->filename); | |
1841 | return; | |
1842 | } | |
1843 | ||
581e13c1 | 1844 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
1845 | for (i = 0; i < pst->number_of_dependencies; i++) |
1846 | if (!pst->dependencies[i]->readin) | |
1847 | { | |
1848 | /* Inform about additional files that need to be read in. */ | |
1849 | if (info_verbose) | |
1850 | { | |
1851 | fputs_filtered (" ", gdb_stdout); | |
1852 | wrap_here (""); | |
1853 | fputs_filtered ("and ", gdb_stdout); | |
1854 | wrap_here (""); | |
1855 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1856 | wrap_here (""); /* Flush output */ |
c906108c SS |
1857 | gdb_flush (gdb_stdout); |
1858 | } | |
5c80ed9d | 1859 | xcoff_psymtab_to_symtab_1 (objfile, pst->dependencies[i]); |
c906108c SS |
1860 | } |
1861 | ||
c5aa993b | 1862 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0) |
c906108c SS |
1863 | { |
1864 | /* Init stuff necessary for reading in symbols. */ | |
1865 | stabsread_init (); | |
1866 | buildsym_init (); | |
a0b3c4fd | 1867 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c | 1868 | |
5c80ed9d | 1869 | read_xcoff_symtab (objfile, pst); |
c906108c SS |
1870 | |
1871 | do_cleanups (old_chain); | |
1872 | } | |
1873 | ||
1874 | pst->readin = 1; | |
1875 | } | |
1876 | ||
c906108c | 1877 | /* Read in all of the symbols for a given psymtab for real. |
257e7a09 | 1878 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
1879 | |
1880 | static void | |
257e7a09 | 1881 | xcoff_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 1882 | { |
257e7a09 | 1883 | if (self->readin) |
c906108c SS |
1884 | { |
1885 | fprintf_unfiltered | |
1886 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
257e7a09 | 1887 | self->filename); |
c906108c SS |
1888 | return; |
1889 | } | |
1890 | ||
257e7a09 YQ |
1891 | if (((struct symloc *) self->read_symtab_private)->numsyms != 0 |
1892 | || self->number_of_dependencies) | |
c906108c SS |
1893 | { |
1894 | /* Print the message now, before reading the string table, | |
c5aa993b | 1895 | to avoid disconcerting pauses. */ |
c906108c SS |
1896 | if (info_verbose) |
1897 | { | |
257e7a09 | 1898 | printf_filtered ("Reading in symbols for %s...", self->filename); |
c906108c SS |
1899 | gdb_flush (gdb_stdout); |
1900 | } | |
1901 | ||
c906108c SS |
1902 | next_symbol_text_func = xcoff_next_symbol_text; |
1903 | ||
257e7a09 | 1904 | xcoff_psymtab_to_symtab_1 (objfile, self); |
c906108c SS |
1905 | |
1906 | /* Match with global symbols. This only needs to be done once, | |
1907 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 1908 | scan_file_globals (objfile); |
c906108c SS |
1909 | |
1910 | /* Finish up the debug error message. */ | |
1911 | if (info_verbose) | |
1912 | printf_filtered ("done.\n"); | |
1913 | } | |
1914 | } | |
1915 | \f | |
1916 | static void | |
fba45db2 | 1917 | xcoff_new_init (struct objfile *objfile) |
c906108c SS |
1918 | { |
1919 | stabsread_new_init (); | |
1920 | buildsym_new_init (); | |
1921 | } | |
1922 | ||
1923 | /* Do initialization in preparation for reading symbols from OBJFILE. | |
c5aa993b | 1924 | |
c906108c SS |
1925 | We will only be called if this is an XCOFF or XCOFF-like file. |
1926 | BFD handles figuring out the format of the file, and code in symfile.c | |
1927 | uses BFD's determination to vector to us. */ | |
1928 | ||
1929 | static void | |
fba45db2 | 1930 | xcoff_symfile_init (struct objfile *objfile) |
c906108c | 1931 | { |
b8b98ad1 TT |
1932 | struct coff_symfile_info *xcoff; |
1933 | ||
581e13c1 | 1934 | /* Allocate struct to keep track of the symfile. */ |
b8b98ad1 TT |
1935 | xcoff = XNEW (struct coff_symfile_info); |
1936 | set_objfile_data (objfile, xcoff_objfile_data_key, xcoff); | |
c906108c SS |
1937 | |
1938 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1939 | find this causes a significant slowdown in gdb then we could | |
1940 | set it in the debug symbol readers only when necessary. */ | |
1941 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
1942 | } |
1943 | ||
1944 | /* Perform any local cleanups required when we are done with a particular | |
1945 | objfile. I.E, we are in the process of discarding all symbol information | |
1946 | for an objfile, freeing up all memory held for it, and unlinking the | |
581e13c1 | 1947 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
1948 | |
1949 | static void | |
fba45db2 | 1950 | xcoff_symfile_finish (struct objfile *objfile) |
c906108c | 1951 | { |
c906108c SS |
1952 | /* Start with a fresh include table for the next objfile. */ |
1953 | if (inclTable) | |
1954 | { | |
b8c9b27d | 1955 | xfree (inclTable); |
c906108c SS |
1956 | inclTable = NULL; |
1957 | } | |
1958 | inclIndx = inclLength = inclDepth = 0; | |
316a8b21 TG |
1959 | |
1960 | dwarf2_free_objfile (objfile); | |
c906108c SS |
1961 | } |
1962 | ||
1963 | ||
1964 | static void | |
fba45db2 | 1965 | init_stringtab (bfd *abfd, file_ptr offset, struct objfile *objfile) |
c906108c SS |
1966 | { |
1967 | long length; | |
1968 | int val; | |
1969 | unsigned char lengthbuf[4]; | |
1970 | char *strtbl; | |
b8b98ad1 | 1971 | struct coff_symfile_info *xcoff = XCOFF_DATA (objfile); |
c906108c | 1972 | |
b8b98ad1 | 1973 | xcoff->strtbl = NULL; |
c906108c SS |
1974 | |
1975 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) | |
8a3fe4f8 | 1976 | error (_("cannot seek to string table in %s: %s"), |
c906108c SS |
1977 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1978 | ||
3a42e9d0 | 1979 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c SS |
1980 | length = bfd_h_get_32 (abfd, lengthbuf); |
1981 | ||
1982 | /* If no string table is needed, then the file may end immediately | |
1983 | after the symbols. Just return with `strtbl' set to NULL. */ | |
1984 | ||
1985 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1986 | return; | |
1987 | ||
581e13c1 MS |
1988 | /* Allocate string table from objfile_obstack. We will need this table |
1989 | as long as we have its symbol table around. */ | |
c906108c | 1990 | |
4a146b47 | 1991 | strtbl = (char *) obstack_alloc (&objfile->objfile_obstack, length); |
b8b98ad1 | 1992 | xcoff->strtbl = strtbl; |
c906108c SS |
1993 | |
1994 | /* Copy length buffer, the first byte is usually zero and is | |
1995 | used for stabs with a name length of zero. */ | |
1996 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
1997 | if (length == sizeof lengthbuf) | |
1998 | return; | |
1999 | ||
3a42e9d0 | 2000 | val = bfd_bread (strtbl + sizeof lengthbuf, length - sizeof lengthbuf, abfd); |
c906108c SS |
2001 | |
2002 | if (val != length - sizeof lengthbuf) | |
8a3fe4f8 | 2003 | error (_("cannot read string table from %s: %s"), |
c906108c SS |
2004 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
2005 | if (strtbl[length - 1] != '\0') | |
3e43a32a MS |
2006 | error (_("bad symbol file: string table " |
2007 | "does not end with null character")); | |
c906108c SS |
2008 | |
2009 | return; | |
2010 | } | |
2011 | \f | |
2012 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
2013 | have seen one, it is the offset in the line numbers of the line numbers | |
2014 | for the psymtab. */ | |
2015 | static unsigned int first_fun_line_offset; | |
2016 | ||
c906108c SS |
2017 | /* Allocate and partially fill a partial symtab. It will be |
2018 | completely filled at the end of the symbol list. | |
2019 | ||
2020 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2021 | is the address relative to which its symbols are (incremental) or 0 | |
581e13c1 | 2022 | (normal). */ |
c906108c SS |
2023 | |
2024 | static struct partial_symtab * | |
0d5cff50 DE |
2025 | xcoff_start_psymtab (struct objfile *objfile, |
2026 | const char *filename, int first_symnum, | |
fba45db2 KB |
2027 | struct partial_symbol **global_syms, |
2028 | struct partial_symbol **static_syms) | |
c906108c SS |
2029 | { |
2030 | struct partial_symtab *result = | |
a109c7c1 MS |
2031 | start_psymtab_common (objfile, objfile->section_offsets, |
2032 | filename, | |
2033 | /* We fill in textlow later. */ | |
2034 | 0, | |
2035 | global_syms, static_syms); | |
c906108c | 2036 | |
e38df1d0 TT |
2037 | result->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2038 | sizeof (struct symloc)); | |
c5aa993b | 2039 | ((struct symloc *) result->read_symtab_private)->first_symnum = first_symnum; |
257e7a09 | 2040 | result->read_symtab = xcoff_read_symtab; |
c906108c | 2041 | |
581e13c1 | 2042 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
2043 | psymtab_language = deduce_language_from_filename (filename); |
2044 | ||
2045 | return result; | |
2046 | } | |
2047 | ||
581e13c1 | 2048 | /* Close off the current usage of PST. |
c906108c SS |
2049 | Returns PST, or NULL if the partial symtab was empty and thrown away. |
2050 | ||
2051 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). | |
2052 | ||
2053 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES | |
2054 | are the information for includes and dependencies. */ | |
2055 | ||
2056 | static struct partial_symtab * | |
5c80ed9d TT |
2057 | xcoff_end_psymtab (struct objfile *objfile, struct partial_symtab *pst, |
2058 | const char **include_list, int num_includes, | |
2059 | int capping_symbol_number, | |
fba45db2 KB |
2060 | struct partial_symtab **dependency_list, |
2061 | int number_dependencies, int textlow_not_set) | |
c906108c SS |
2062 | { |
2063 | int i; | |
c906108c SS |
2064 | |
2065 | if (capping_symbol_number != -1) | |
c5aa993b | 2066 | ((struct symloc *) pst->read_symtab_private)->numsyms = |
c906108c | 2067 | capping_symbol_number |
c5aa993b JM |
2068 | - ((struct symloc *) pst->read_symtab_private)->first_symnum; |
2069 | ((struct symloc *) pst->read_symtab_private)->lineno_off = | |
c906108c SS |
2070 | first_fun_line_offset; |
2071 | first_fun_line_offset = 0; | |
3e43a32a MS |
2072 | pst->n_global_syms = objfile->global_psymbols.next |
2073 | - (objfile->global_psymbols.list + pst->globals_offset); | |
2074 | pst->n_static_syms = objfile->static_psymbols.next | |
2075 | - (objfile->static_psymbols.list + pst->statics_offset); | |
c906108c SS |
2076 | |
2077 | pst->number_of_dependencies = number_dependencies; | |
2078 | if (number_dependencies) | |
2079 | { | |
2080 | pst->dependencies = (struct partial_symtab **) | |
8b92e4d5 | 2081 | obstack_alloc (&objfile->objfile_obstack, |
c5aa993b | 2082 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c | 2083 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2084 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2085 | } |
2086 | else | |
2087 | pst->dependencies = 0; | |
2088 | ||
2089 | for (i = 0; i < num_includes; i++) | |
2090 | { | |
2091 | struct partial_symtab *subpst = | |
a109c7c1 | 2092 | allocate_psymtab (include_list[i], objfile); |
c906108c SS |
2093 | |
2094 | subpst->section_offsets = pst->section_offsets; | |
e38df1d0 TT |
2095 | subpst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2096 | sizeof (struct symloc)); | |
c5aa993b JM |
2097 | ((struct symloc *) subpst->read_symtab_private)->first_symnum = 0; |
2098 | ((struct symloc *) subpst->read_symtab_private)->numsyms = 0; | |
c906108c SS |
2099 | subpst->textlow = 0; |
2100 | subpst->texthigh = 0; | |
2101 | ||
2102 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2103 | shared by the entire set of include files. FIXME-someday. */ |
c906108c | 2104 | subpst->dependencies = (struct partial_symtab **) |
8b92e4d5 | 2105 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2106 | sizeof (struct partial_symtab *)); |
2107 | subpst->dependencies[0] = pst; | |
2108 | subpst->number_of_dependencies = 1; | |
2109 | ||
2110 | subpst->globals_offset = | |
2111 | subpst->n_global_syms = | |
c5aa993b JM |
2112 | subpst->statics_offset = |
2113 | subpst->n_static_syms = 0; | |
c906108c SS |
2114 | |
2115 | subpst->readin = 0; | |
2116 | subpst->symtab = 0; | |
2117 | subpst->read_symtab = pst->read_symtab; | |
2118 | } | |
2119 | ||
5c80ed9d | 2120 | sort_pst_symbols (objfile, pst); |
c906108c | 2121 | |
c906108c SS |
2122 | if (num_includes == 0 |
2123 | && number_dependencies == 0 | |
2124 | && pst->n_global_syms == 0 | |
2125 | && pst->n_static_syms == 0) | |
2126 | { | |
2127 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2128 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2129 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b | 2130 | any symbols in them. There can be a lot of them. */ |
c906108c | 2131 | |
5c80ed9d | 2132 | discard_psymtab (objfile, pst); |
c906108c SS |
2133 | |
2134 | /* Indicate that psymtab was thrown away. */ | |
c5aa993b | 2135 | pst = (struct partial_symtab *) NULL; |
c906108c SS |
2136 | } |
2137 | return pst; | |
2138 | } | |
2139 | ||
c906108c SS |
2140 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in |
2141 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2142 | the symbol and its auxents. */ | |
2143 | ||
2144 | static void | |
fba45db2 | 2145 | swap_sym (struct internal_syment *symbol, union internal_auxent *aux, |
0d5cff50 | 2146 | const char **name, char **raw, unsigned int *symnump, |
fba45db2 | 2147 | struct objfile *objfile) |
c906108c SS |
2148 | { |
2149 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2150 | if (symbol->n_zeroes) | |
2151 | { | |
2152 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
c5aa993b | 2153 | '\0'-terminated. */ |
c906108c SS |
2154 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') |
2155 | { | |
2156 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2157 | into the minimal symbols. */ | |
2158 | char *p; | |
a109c7c1 | 2159 | |
8b92e4d5 | 2160 | p = obstack_alloc (&objfile->objfile_obstack, E_SYMNMLEN + 1); |
c906108c SS |
2161 | strncpy (p, symbol->n_name, E_SYMNMLEN); |
2162 | p[E_SYMNMLEN] = '\0'; | |
2163 | *name = p; | |
2164 | } | |
2165 | else | |
2166 | /* Point to the unswapped name as that persists as long as the | |
2167 | objfile does. */ | |
c5aa993b | 2168 | *name = ((struct external_syment *) *raw)->e.e_name; |
c906108c SS |
2169 | } |
2170 | else if (symbol->n_sclass & 0x80) | |
2171 | { | |
b8b98ad1 | 2172 | *name = XCOFF_DATA (objfile)->debugsec + symbol->n_offset; |
c906108c SS |
2173 | } |
2174 | else | |
2175 | { | |
b8b98ad1 | 2176 | *name = XCOFF_DATA (objfile)->strtbl + symbol->n_offset; |
c906108c SS |
2177 | } |
2178 | ++*symnump; | |
2179 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2180 | if (symbol->n_numaux > 0) | |
2181 | { | |
2182 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2183 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2184 | ||
2185 | *symnump += symbol->n_numaux; | |
2186 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2187 | } | |
2188 | } | |
2189 | ||
23136709 KB |
2190 | static void |
2191 | function_outside_compilation_unit_complaint (const char *arg1) | |
2192 | { | |
2193 | complaint (&symfile_complaints, | |
3e43a32a MS |
2194 | _("function `%s' appears to be defined " |
2195 | "outside of all compilation units"), | |
23136709 KB |
2196 | arg1); |
2197 | } | |
2198 | ||
c906108c | 2199 | static void |
fba45db2 | 2200 | scan_xcoff_symtab (struct objfile *objfile) |
c906108c | 2201 | { |
40c58d95 | 2202 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
581e13c1 | 2203 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
0d5cff50 | 2204 | const char *filestring = NULL; |
c906108c | 2205 | |
0d5cff50 | 2206 | const char *namestring; |
c906108c SS |
2207 | int past_first_source_file = 0; |
2208 | bfd *abfd; | |
2209 | asection *bfd_sect; | |
2210 | unsigned int nsyms; | |
2211 | ||
2212 | /* Current partial symtab */ | |
2213 | struct partial_symtab *pst; | |
2214 | ||
581e13c1 | 2215 | /* List of current psymtab's include files. */ |
0d5cff50 | 2216 | const char **psymtab_include_list; |
c906108c SS |
2217 | int includes_allocated; |
2218 | int includes_used; | |
2219 | ||
581e13c1 | 2220 | /* Index within current psymtab dependency list. */ |
c906108c SS |
2221 | struct partial_symtab **dependency_list; |
2222 | int dependencies_used, dependencies_allocated; | |
2223 | ||
2224 | char *sraw_symbol; | |
2225 | struct internal_syment symbol; | |
96baa820 | 2226 | union internal_auxent main_aux[5]; |
c906108c SS |
2227 | unsigned int ssymnum; |
2228 | ||
0d5cff50 | 2229 | const char *last_csect_name = NULL; /* Last seen csect's name and value. */ |
c906108c SS |
2230 | CORE_ADDR last_csect_val = 0; |
2231 | int last_csect_sec = 0; | |
581e13c1 | 2232 | int misc_func_recorded = 0; /* true if any misc. function. */ |
c906108c SS |
2233 | int textlow_not_set = 1; |
2234 | ||
2235 | pst = (struct partial_symtab *) 0; | |
2236 | ||
2237 | includes_allocated = 30; | |
2238 | includes_used = 0; | |
0d5cff50 DE |
2239 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2240 | sizeof (const char *)); | |
c906108c SS |
2241 | |
2242 | dependencies_allocated = 30; | |
2243 | dependencies_used = 0; | |
2244 | dependency_list = | |
2245 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2246 | sizeof (struct partial_symtab *)); | |
2247 | ||
46212e0b | 2248 | set_last_source_file (NULL); |
c906108c SS |
2249 | |
2250 | abfd = objfile->obfd; | |
13c763f4 | 2251 | next_symbol_text_func = xcoff_next_symbol_text; |
c906108c | 2252 | |
b8b98ad1 TT |
2253 | sraw_symbol = XCOFF_DATA (objfile)->symtbl; |
2254 | nsyms = XCOFF_DATA (objfile)->symtbl_num_syms; | |
c906108c SS |
2255 | ssymnum = 0; |
2256 | while (ssymnum < nsyms) | |
2257 | { | |
7a78ae4e | 2258 | int sclass; |
c906108c SS |
2259 | |
2260 | QUIT; | |
2261 | ||
7a78ae4e ND |
2262 | bfd_coff_swap_sym_in (abfd, sraw_symbol, &symbol); |
2263 | sclass = symbol.n_sclass; | |
2264 | ||
c906108c SS |
2265 | switch (sclass) |
2266 | { | |
2267 | case C_EXT: | |
2268 | case C_HIDEXT: | |
2269 | { | |
2270 | /* The CSECT auxent--always the last auxent. */ | |
2271 | union internal_auxent csect_aux; | |
2272 | unsigned int symnum_before = ssymnum; | |
2273 | ||
96baa820 | 2274 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2275 | &ssymnum, objfile); |
2276 | if (symbol.n_numaux > 1) | |
2277 | { | |
2278 | bfd_coff_swap_aux_in | |
2279 | (objfile->obfd, | |
c5aa993b | 2280 | sraw_symbol - coff_data (abfd)->local_symesz, |
c906108c SS |
2281 | symbol.n_type, |
2282 | symbol.n_sclass, | |
2283 | symbol.n_numaux - 1, | |
2284 | symbol.n_numaux, | |
2285 | &csect_aux); | |
2286 | } | |
2287 | else | |
96baa820 | 2288 | csect_aux = main_aux[0]; |
c906108c | 2289 | |
977adac5 ND |
2290 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2291 | if (namestring[0] == '$' | |
c906108c SS |
2292 | || (namestring[0] == '.' && namestring[1] == '$')) |
2293 | break; | |
2294 | ||
2295 | switch (csect_aux.x_csect.x_smtyp & 0x7) | |
2296 | { | |
2297 | case XTY_SD: | |
2298 | switch (csect_aux.x_csect.x_smclas) | |
2299 | { | |
2300 | case XMC_PR: | |
2301 | if (last_csect_name) | |
2302 | { | |
2303 | /* If no misc. function recorded in the last | |
581e13c1 | 2304 | seen csect, enter it as a function. This |
c906108c SS |
2305 | will take care of functions like strcmp() |
2306 | compiled by xlc. */ | |
2307 | ||
2308 | if (!misc_func_recorded) | |
2309 | { | |
ec92004f | 2310 | record_minimal_symbol |
c906108c | 2311 | (last_csect_name, last_csect_val, |
ec92004f JB |
2312 | mst_text, last_csect_sec, objfile); |
2313 | misc_func_recorded = 1; | |
c906108c SS |
2314 | } |
2315 | ||
2316 | if (pst != NULL) | |
2317 | { | |
2318 | /* We have to allocate one psymtab for | |
2319 | each program csect, because their text | |
2320 | sections need not be adjacent. */ | |
2321 | xcoff_end_psymtab | |
5c80ed9d TT |
2322 | (objfile, pst, psymtab_include_list, |
2323 | includes_used, symnum_before, dependency_list, | |
c906108c SS |
2324 | dependencies_used, textlow_not_set); |
2325 | includes_used = 0; | |
2326 | dependencies_used = 0; | |
2327 | /* Give all psymtabs for this source file the same | |
2328 | name. */ | |
2329 | pst = xcoff_start_psymtab | |
d4f3574e | 2330 | (objfile, |
c906108c SS |
2331 | filestring, |
2332 | symnum_before, | |
2333 | objfile->global_psymbols.next, | |
2334 | objfile->static_psymbols.next); | |
2335 | } | |
2336 | } | |
977adac5 ND |
2337 | /* Activate the misc_func_recorded mechanism for |
2338 | compiler- and linker-generated CSECTs like ".strcmp" | |
2339 | and "@FIX1". */ | |
2340 | if (namestring && (namestring[0] == '.' | |
2341 | || namestring[0] == '@')) | |
c906108c SS |
2342 | { |
2343 | last_csect_name = namestring; | |
2344 | last_csect_val = symbol.n_value; | |
ec92004f | 2345 | last_csect_sec = symbol.n_scnum; |
c906108c SS |
2346 | } |
2347 | if (pst != NULL) | |
2348 | { | |
2349 | CORE_ADDR highval = | |
a109c7c1 MS |
2350 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; |
2351 | ||
c906108c SS |
2352 | if (highval > pst->texthigh) |
2353 | pst->texthigh = highval; | |
2354 | if (pst->textlow == 0 || symbol.n_value < pst->textlow) | |
2355 | pst->textlow = symbol.n_value; | |
2356 | } | |
2357 | misc_func_recorded = 0; | |
2358 | break; | |
2359 | ||
2360 | case XMC_RW: | |
6904b546 | 2361 | case XMC_TD: |
c906108c SS |
2362 | /* Data variables are recorded in the minimal symbol |
2363 | table, except for section symbols. */ | |
2364 | if (*namestring != '.') | |
4d1eb6b4 | 2365 | record_minimal_symbol |
c906108c SS |
2366 | (namestring, symbol.n_value, |
2367 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
4d1eb6b4 | 2368 | symbol.n_scnum, objfile); |
c906108c SS |
2369 | break; |
2370 | ||
2371 | case XMC_TC0: | |
2372 | if (toc_offset) | |
8a3fe4f8 | 2373 | warning (_("More than one XMC_TC0 symbol found.")); |
c906108c SS |
2374 | toc_offset = symbol.n_value; |
2375 | ||
3e43a32a MS |
2376 | /* Make TOC offset relative to start address of |
2377 | section. */ | |
c906108c SS |
2378 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); |
2379 | if (bfd_sect) | |
2380 | toc_offset -= bfd_section_vma (objfile->obfd, bfd_sect); | |
2381 | break; | |
2382 | ||
2383 | case XMC_TC: | |
2384 | /* These symbols tell us where the TOC entry for a | |
2385 | variable is, not the variable itself. */ | |
2386 | break; | |
2387 | ||
2388 | default: | |
2389 | break; | |
2390 | } | |
2391 | break; | |
2392 | ||
2393 | case XTY_LD: | |
2394 | switch (csect_aux.x_csect.x_smclas) | |
2395 | { | |
2396 | case XMC_PR: | |
2397 | /* A function entry point. */ | |
2398 | ||
2399 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2400 | first_fun_line_offset = | |
96baa820 | 2401 | main_aux[0].x_sym.x_fcnary.x_fcn.x_lnnoptr; |
ec92004f JB |
2402 | { |
2403 | record_minimal_symbol | |
2404 | (namestring, symbol.n_value, | |
2405 | sclass == C_HIDEXT ? mst_file_text : mst_text, | |
2406 | symbol.n_scnum, objfile); | |
2407 | misc_func_recorded = 1; | |
2408 | } | |
c906108c SS |
2409 | break; |
2410 | ||
2411 | case XMC_GL: | |
2412 | /* shared library function trampoline code entry | |
581e13c1 | 2413 | point. */ |
c906108c SS |
2414 | |
2415 | /* record trampoline code entries as | |
2416 | mst_solib_trampoline symbol. When we lookup mst | |
2417 | symbols, we will choose mst_text over | |
581e13c1 | 2418 | mst_solib_trampoline. */ |
ec92004f | 2419 | record_minimal_symbol |
c906108c | 2420 | (namestring, symbol.n_value, |
ec92004f JB |
2421 | mst_solib_trampoline, symbol.n_scnum, objfile); |
2422 | misc_func_recorded = 1; | |
c906108c SS |
2423 | break; |
2424 | ||
2425 | case XMC_DS: | |
2426 | /* The symbols often have the same names as | |
2427 | debug symbols for functions, and confuse | |
2428 | lookup_symbol. */ | |
2429 | break; | |
2430 | ||
2431 | default: | |
2432 | ||
2433 | /* xlc puts each variable in a separate csect, | |
2434 | so we get an XTY_SD for each variable. But | |
2435 | gcc puts several variables in a csect, so | |
2436 | that each variable only gets an XTY_LD. We | |
2437 | still need to record them. This will | |
2438 | typically be XMC_RW; I suspect XMC_RO and | |
2439 | XMC_BS might be possible too. */ | |
2440 | if (*namestring != '.') | |
4d1eb6b4 | 2441 | record_minimal_symbol |
c906108c SS |
2442 | (namestring, symbol.n_value, |
2443 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
4d1eb6b4 | 2444 | symbol.n_scnum, objfile); |
c906108c SS |
2445 | break; |
2446 | } | |
2447 | break; | |
2448 | ||
2449 | case XTY_CM: | |
2450 | switch (csect_aux.x_csect.x_smclas) | |
2451 | { | |
2452 | case XMC_RW: | |
2453 | case XMC_BS: | |
2454 | /* Common variables are recorded in the minimal symbol | |
2455 | table, except for section symbols. */ | |
2456 | if (*namestring != '.') | |
4d1eb6b4 | 2457 | record_minimal_symbol |
c906108c SS |
2458 | (namestring, symbol.n_value, |
2459 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, | |
4d1eb6b4 | 2460 | symbol.n_scnum, objfile); |
c906108c SS |
2461 | break; |
2462 | } | |
2463 | break; | |
2464 | ||
2465 | default: | |
2466 | break; | |
2467 | } | |
2468 | } | |
2469 | break; | |
2470 | case C_FILE: | |
2471 | { | |
2472 | unsigned int symnum_before; | |
2473 | ||
2474 | symnum_before = ssymnum; | |
96baa820 | 2475 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2476 | &ssymnum, objfile); |
2477 | ||
2478 | /* See if the last csect needs to be recorded. */ | |
2479 | ||
2480 | if (last_csect_name && !misc_func_recorded) | |
2481 | { | |
c906108c SS |
2482 | /* If no misc. function recorded in the last seen csect, enter |
2483 | it as a function. This will take care of functions like | |
2484 | strcmp() compiled by xlc. */ | |
2485 | ||
ec92004f JB |
2486 | record_minimal_symbol (last_csect_name, last_csect_val, |
2487 | mst_text, last_csect_sec, objfile); | |
2488 | misc_func_recorded = 1; | |
c906108c SS |
2489 | } |
2490 | ||
2491 | if (pst) | |
2492 | { | |
5c80ed9d TT |
2493 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, |
2494 | includes_used, symnum_before, | |
2495 | dependency_list, dependencies_used, | |
2496 | textlow_not_set); | |
c906108c SS |
2497 | includes_used = 0; |
2498 | dependencies_used = 0; | |
2499 | } | |
2500 | first_fun_line_offset = 0; | |
2501 | ||
2502 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2503 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2504 | do things the standard COFF way and put it in the auxent. | |
2505 | We use the auxent if the symbol is ".file" and an auxent | |
2506 | exists, otherwise use the symbol itself. */ | |
2507 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2508 | { | |
96baa820 | 2509 | filestring = coff_getfilename (&main_aux[0], objfile); |
c906108c SS |
2510 | } |
2511 | else | |
2512 | filestring = namestring; | |
2513 | ||
d4f3574e | 2514 | pst = xcoff_start_psymtab (objfile, |
c906108c SS |
2515 | filestring, |
2516 | symnum_before, | |
2517 | objfile->global_psymbols.next, | |
2518 | objfile->static_psymbols.next); | |
2519 | last_csect_name = NULL; | |
2520 | } | |
2521 | break; | |
2522 | ||
2523 | default: | |
2524 | { | |
23136709 | 2525 | complaint (&symfile_complaints, |
3e43a32a MS |
2526 | _("Storage class %d not recognized during scan"), |
2527 | sclass); | |
c906108c SS |
2528 | } |
2529 | /* FALLTHROUGH */ | |
2530 | ||
2531 | /* C_FCN is .bf and .ef symbols. I think it is sufficient | |
2532 | to handle only the C_FUN and C_EXT. */ | |
2533 | case C_FCN: | |
2534 | ||
2535 | case C_BSTAT: | |
2536 | case C_ESTAT: | |
2537 | case C_ARG: | |
2538 | case C_REGPARM: | |
2539 | case C_REG: | |
2540 | case C_TPDEF: | |
2541 | case C_STRTAG: | |
2542 | case C_UNTAG: | |
2543 | case C_ENTAG: | |
2544 | case C_LABEL: | |
2545 | case C_NULL: | |
2546 | ||
2547 | /* C_EINCL means we are switching back to the main file. But there | |
2548 | is no reason to care; the only thing we want to know about | |
2549 | includes is the names of all the included (.h) files. */ | |
2550 | case C_EINCL: | |
2551 | ||
2552 | case C_BLOCK: | |
2553 | ||
2554 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2555 | used instead. */ | |
2556 | case C_STAT: | |
2557 | ||
2558 | /* I don't think the name of the common block (as opposed to the | |
2559 | variables within it) is something which is user visible | |
2560 | currently. */ | |
2561 | case C_BCOMM: | |
2562 | case C_ECOMM: | |
2563 | ||
2564 | case C_PSYM: | |
2565 | case C_RPSYM: | |
2566 | ||
2567 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2568 | so C_LSYM would appear to be only for locals. */ | |
2569 | case C_LSYM: | |
2570 | ||
2571 | case C_AUTO: | |
2572 | case C_RSYM: | |
2573 | { | |
2574 | /* We probably could save a few instructions by assuming that | |
2575 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
7a78ae4e | 2576 | int naux1 = symbol.n_numaux + 1; |
a109c7c1 | 2577 | |
c906108c | 2578 | ssymnum += naux1; |
7a78ae4e | 2579 | sraw_symbol += bfd_coff_symesz (abfd) * naux1; |
c906108c SS |
2580 | } |
2581 | break; | |
2582 | ||
2583 | case C_BINCL: | |
d5d0a62f | 2584 | { |
581e13c1 | 2585 | /* Mark down an include file in the current psymtab. */ |
d5d0a62f | 2586 | enum language tmp_language; |
a109c7c1 | 2587 | |
d5d0a62f EZ |
2588 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2589 | &ssymnum, objfile); | |
2590 | ||
2591 | tmp_language = deduce_language_from_filename (namestring); | |
2592 | ||
2593 | /* Only change the psymtab's language if we've learned | |
2594 | something useful (eg. tmp_language is not language_unknown). | |
2595 | In addition, to match what start_subfile does, never change | |
2596 | from C++ to C. */ | |
2597 | if (tmp_language != language_unknown | |
2598 | && (tmp_language != language_c | |
2599 | || psymtab_language != language_cplus)) | |
2600 | psymtab_language = tmp_language; | |
2601 | ||
2602 | /* In C++, one may expect the same filename to come round many | |
2603 | times, when code is coming alternately from the main file | |
581e13c1 | 2604 | and from inline functions in other files. So I check to see |
d5d0a62f EZ |
2605 | if this is a file we've seen before -- either the main |
2606 | source file, or a previously included file. | |
2607 | ||
2608 | This seems to be a lot of time to be spending on N_SOL, but | |
2609 | things like "break c-exp.y:435" need to work (I | |
2610 | suppose the psymtab_include_list could be hashed or put | |
2611 | in a binary tree, if profiling shows this is a major hog). */ | |
7ecb6532 | 2612 | if (pst && strcmp (namestring, pst->filename) == 0) |
d5d0a62f | 2613 | continue; |
a109c7c1 | 2614 | |
d5d0a62f | 2615 | { |
aa1ee363 | 2616 | int i; |
a109c7c1 | 2617 | |
d5d0a62f | 2618 | for (i = 0; i < includes_used; i++) |
7ecb6532 | 2619 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
d5d0a62f EZ |
2620 | { |
2621 | i = -1; | |
2622 | break; | |
2623 | } | |
2624 | if (i == -1) | |
2625 | continue; | |
2626 | } | |
2627 | psymtab_include_list[includes_used++] = namestring; | |
2628 | if (includes_used >= includes_allocated) | |
2629 | { | |
0d5cff50 | 2630 | const char **orig = psymtab_include_list; |
c906108c | 2631 | |
0d5cff50 | 2632 | psymtab_include_list = (const char **) |
d5d0a62f | 2633 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 2634 | sizeof (const char *)); |
4efb68b1 | 2635 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 2636 | includes_used * sizeof (const char *)); |
d5d0a62f EZ |
2637 | } |
2638 | continue; | |
2639 | } | |
c906108c SS |
2640 | case C_FUN: |
2641 | /* The value of the C_FUN is not the address of the function (it | |
2642 | appears to be the address before linking), but as long as it | |
2643 | is smaller than the actual address, then find_pc_partial_function | |
2644 | will use the minimal symbols instead. I hope. */ | |
2645 | ||
2646 | case C_GSYM: | |
2647 | case C_ECOML: | |
2648 | case C_DECL: | |
2649 | case C_STSYM: | |
d5d0a62f | 2650 | { |
d5d0a62f | 2651 | char *p; |
a109c7c1 | 2652 | |
d5d0a62f EZ |
2653 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2654 | &ssymnum, objfile); | |
2655 | ||
ed4b0e6a | 2656 | p = strchr (namestring, ':'); |
d5d0a62f EZ |
2657 | if (!p) |
2658 | continue; /* Not a debugging symbol. */ | |
2659 | ||
2660 | /* Main processing section for debugging symbols which | |
2661 | the initial read through the symbol tables needs to worry | |
2662 | about. If we reach this point, the symbol which we are | |
2663 | considering is definitely one we are interested in. | |
2664 | p must also contain the (valid) index into the namestring | |
2665 | which indicates the debugging type symbol. */ | |
2666 | ||
2667 | switch (p[1]) | |
2668 | { | |
2669 | case 'S': | |
3e43a32a MS |
2670 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2671 | SECT_OFF_DATA (objfile)); | |
149ad273 | 2672 | |
5e2b427d | 2673 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 2674 | namestring = gdbarch_static_transform_name |
5e2b427d | 2675 | (gdbarch, namestring); |
149ad273 | 2676 | |
04a679b8 | 2677 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2678 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f EZ |
2679 | &objfile->static_psymbols, |
2680 | 0, symbol.n_value, | |
2681 | psymtab_language, objfile); | |
2682 | continue; | |
2683 | ||
2684 | case 'G': | |
3e43a32a MS |
2685 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2686 | SECT_OFF_DATA (objfile)); | |
d5d0a62f | 2687 | /* The addresses in these entries are reported to be |
581e13c1 | 2688 | wrong. See the code that reads 'G's for symtabs. */ |
04a679b8 | 2689 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2690 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f EZ |
2691 | &objfile->global_psymbols, |
2692 | 0, symbol.n_value, | |
2693 | psymtab_language, objfile); | |
2694 | continue; | |
2695 | ||
2696 | case 'T': | |
2697 | /* When a 'T' entry is defining an anonymous enum, it | |
2698 | may have a name which is the empty string, or a | |
2699 | single space. Since they're not really defining a | |
2700 | symbol, those shouldn't go in the partial symbol | |
2701 | table. We do pick up the elements of such enums at | |
2702 | 'check_enum:', below. */ | |
2703 | if (p >= namestring + 2 | |
2704 | || (p == namestring + 1 | |
2705 | && namestring[0] != ' ')) | |
2706 | { | |
04a679b8 | 2707 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2708 | STRUCT_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2709 | &objfile->static_psymbols, |
2710 | symbol.n_value, 0, | |
2711 | psymtab_language, objfile); | |
2712 | if (p[2] == 't') | |
2713 | { | |
2714 | /* Also a typedef with the same name. */ | |
04a679b8 | 2715 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2716 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2717 | &objfile->static_psymbols, |
2718 | symbol.n_value, 0, | |
2719 | psymtab_language, objfile); | |
2720 | p += 1; | |
2721 | } | |
d5d0a62f EZ |
2722 | } |
2723 | goto check_enum; | |
2724 | ||
2725 | case 't': | |
581e13c1 | 2726 | if (p != namestring) /* a name is there, not just :T... */ |
d5d0a62f | 2727 | { |
04a679b8 | 2728 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2729 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2730 | &objfile->static_psymbols, |
2731 | symbol.n_value, 0, | |
2732 | psymtab_language, objfile); | |
2733 | } | |
2734 | check_enum: | |
2735 | /* If this is an enumerated type, we need to | |
2736 | add all the enum constants to the partial symbol | |
2737 | table. This does not cover enums without names, e.g. | |
2738 | "enum {a, b} c;" in C, but fortunately those are | |
2739 | rare. There is no way for GDB to find those from the | |
2740 | enum type without spending too much time on it. Thus | |
2741 | to solve this problem, the compiler needs to put out the | |
2742 | enum in a nameless type. GCC2 does this. */ | |
2743 | ||
2744 | /* We are looking for something of the form | |
2745 | <name> ":" ("t" | "T") [<number> "="] "e" | |
2746 | {<constant> ":" <value> ","} ";". */ | |
2747 | ||
2748 | /* Skip over the colon and the 't' or 'T'. */ | |
2749 | p += 2; | |
2750 | /* This type may be given a number. Also, numbers can come | |
2751 | in pairs like (0,26). Skip over it. */ | |
2752 | while ((*p >= '0' && *p <= '9') | |
2753 | || *p == '(' || *p == ',' || *p == ')' | |
2754 | || *p == '=') | |
2755 | p++; | |
2756 | ||
2757 | if (*p++ == 'e') | |
2758 | { | |
3e43a32a MS |
2759 | /* The aix4 compiler emits extra crud before the |
2760 | members. */ | |
d5d0a62f EZ |
2761 | if (*p == '-') |
2762 | { | |
2763 | /* Skip over the type (?). */ | |
2764 | while (*p != ':') | |
2765 | p++; | |
2766 | ||
2767 | /* Skip over the colon. */ | |
2768 | p++; | |
2769 | } | |
2770 | ||
2771 | /* We have found an enumerated type. */ | |
2772 | /* According to comments in read_enum_type | |
2773 | a comma could end it instead of a semicolon. | |
2774 | I don't know where that happens. | |
2775 | Accept either. */ | |
2776 | while (*p && *p != ';' && *p != ',') | |
2777 | { | |
2778 | char *q; | |
2779 | ||
2780 | /* Check for and handle cretinous dbx symbol name | |
2781 | continuation! */ | |
2782 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
2783 | p = next_symbol_text (objfile); | |
2784 | ||
2785 | /* Point to the character after the name | |
2786 | of the enum constant. */ | |
2787 | for (q = p; *q && *q != ':'; q++) | |
2788 | ; | |
2789 | /* Note that the value doesn't matter for | |
2790 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 2791 | add_psymbol_to_list (p, q - p, 1, |
176620f1 | 2792 | VAR_DOMAIN, LOC_CONST, |
d5d0a62f EZ |
2793 | &objfile->static_psymbols, 0, |
2794 | 0, psymtab_language, objfile); | |
2795 | /* Point past the name. */ | |
2796 | p = q; | |
2797 | /* Skip over the value. */ | |
2798 | while (*p && *p != ',') | |
2799 | p++; | |
2800 | /* Advance past the comma. */ | |
2801 | if (*p) | |
2802 | p++; | |
2803 | } | |
2804 | } | |
2805 | continue; | |
2806 | ||
2807 | case 'c': | |
2808 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 2809 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2810 | VAR_DOMAIN, LOC_CONST, |
d5d0a62f EZ |
2811 | &objfile->static_psymbols, symbol.n_value, |
2812 | 0, psymtab_language, objfile); | |
2813 | continue; | |
2814 | ||
2815 | case 'f': | |
2816 | if (! pst) | |
2817 | { | |
2818 | int name_len = p - namestring; | |
2819 | char *name = xmalloc (name_len + 1); | |
a109c7c1 | 2820 | |
d5d0a62f EZ |
2821 | memcpy (name, namestring, name_len); |
2822 | name[name_len] = '\0'; | |
23136709 | 2823 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2824 | xfree (name); |
2825 | } | |
3e43a32a MS |
2826 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2827 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2828 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2829 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f EZ |
2830 | &objfile->static_psymbols, |
2831 | 0, symbol.n_value, | |
2832 | psymtab_language, objfile); | |
2833 | continue; | |
2834 | ||
2835 | /* Global functions were ignored here, but now they | |
2836 | are put into the global psymtab like one would expect. | |
2837 | They're also in the minimal symbol table. */ | |
2838 | case 'F': | |
2839 | if (! pst) | |
2840 | { | |
2841 | int name_len = p - namestring; | |
2842 | char *name = xmalloc (name_len + 1); | |
a109c7c1 | 2843 | |
d5d0a62f EZ |
2844 | memcpy (name, namestring, name_len); |
2845 | name[name_len] = '\0'; | |
23136709 | 2846 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2847 | xfree (name); |
2848 | } | |
9f1d5432 PH |
2849 | |
2850 | /* We need only the minimal symbols for these | |
581e13c1 | 2851 | loader-generated definitions. Keeping the global |
9f1d5432 | 2852 | symbols leads to "in psymbols but not in symbols" |
581e13c1 | 2853 | errors. */ |
9f1d5432 PH |
2854 | if (strncmp (namestring, "@FIX", 4) == 0) |
2855 | continue; | |
2856 | ||
3e43a32a MS |
2857 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2858 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2859 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2860 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f EZ |
2861 | &objfile->global_psymbols, |
2862 | 0, symbol.n_value, | |
2863 | psymtab_language, objfile); | |
2864 | continue; | |
2865 | ||
2866 | /* Two things show up here (hopefully); static symbols of | |
2867 | local scope (static used inside braces) or extensions | |
2868 | of structure symbols. We can ignore both. */ | |
2869 | case 'V': | |
2870 | case '(': | |
2871 | case '0': | |
2872 | case '1': | |
2873 | case '2': | |
2874 | case '3': | |
2875 | case '4': | |
2876 | case '5': | |
2877 | case '6': | |
2878 | case '7': | |
2879 | case '8': | |
2880 | case '9': | |
2881 | case '-': | |
3e43a32a MS |
2882 | case '#': /* For symbol identification (used in |
2883 | live ranges). */ | |
d5d0a62f EZ |
2884 | continue; |
2885 | ||
2886 | case ':': | |
2887 | /* It is a C++ nested symbol. We don't need to record it | |
2888 | (I don't think); if we try to look up foo::bar::baz, | |
2889 | then symbols for the symtab containing foo should get | |
2890 | read in, I think. */ | |
2891 | /* Someone says sun cc puts out symbols like | |
2892 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2893 | which would get here with a symbol type of ':'. */ | |
2894 | continue; | |
2895 | ||
2896 | default: | |
3e43a32a MS |
2897 | /* Unexpected symbol descriptor. The second and |
2898 | subsequent stabs of a continued stab can show up | |
2899 | here. The question is whether they ever can mimic | |
2900 | a normal stab--it would be nice if not, since we | |
2901 | certainly don't want to spend the time searching to | |
2902 | the end of every string looking for a | |
2903 | backslash. */ | |
d5d0a62f | 2904 | |
23136709 | 2905 | complaint (&symfile_complaints, |
e2e0b3e5 | 2906 | _("unknown symbol descriptor `%c'"), p[1]); |
d5d0a62f EZ |
2907 | |
2908 | /* Ignore it; perhaps it is an extension that we don't | |
2909 | know about. */ | |
2910 | continue; | |
2911 | } | |
2912 | } | |
c906108c SS |
2913 | } |
2914 | } | |
2915 | ||
2916 | if (pst) | |
2917 | { | |
5c80ed9d | 2918 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
c906108c SS |
2919 | ssymnum, dependency_list, |
2920 | dependencies_used, textlow_not_set); | |
2921 | } | |
2922 | ||
581e13c1 MS |
2923 | /* Record the toc offset value of this symbol table into objfile |
2924 | structure. If no XMC_TC0 is found, toc_offset should be zero. | |
2925 | Another place to obtain this information would be file auxiliary | |
2926 | header. */ | |
c906108c | 2927 | |
b8b98ad1 | 2928 | XCOFF_DATA (objfile)->toc_offset = toc_offset; |
c906108c SS |
2929 | } |
2930 | ||
2931 | /* Return the toc offset value for a given objfile. */ | |
2932 | ||
2933 | CORE_ADDR | |
63807e1d | 2934 | xcoff_get_toc_offset (struct objfile *objfile) |
c906108c SS |
2935 | { |
2936 | if (objfile) | |
b8b98ad1 | 2937 | return XCOFF_DATA (objfile)->toc_offset; |
c906108c SS |
2938 | return 0; |
2939 | } | |
2940 | ||
2941 | /* Scan and build partial symbols for a symbol file. | |
2942 | We have been initialized by a call to dbx_symfile_init, which | |
2943 | put all the relevant info into a "struct dbx_symfile_info", | |
2944 | hung off the objfile structure. | |
2945 | ||
2946 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
581e13c1 MS |
2947 | various sections are (depending where the sections were actually |
2948 | loaded). */ | |
c906108c SS |
2949 | |
2950 | static void | |
f4352531 | 2951 | xcoff_initial_scan (struct objfile *objfile, int symfile_flags) |
c906108c SS |
2952 | { |
2953 | bfd *abfd; | |
2954 | int val; | |
2955 | struct cleanup *back_to; | |
c5aa993b JM |
2956 | int num_symbols; /* # of symbols */ |
2957 | file_ptr symtab_offset; /* symbol table and */ | |
2958 | file_ptr stringtab_offset; /* string table file offsets */ | |
c906108c | 2959 | struct coff_symfile_info *info; |
4262abfb | 2960 | const char *name; |
c906108c SS |
2961 | unsigned int size; |
2962 | ||
b8b98ad1 | 2963 | info = XCOFF_DATA (objfile); |
c906108c | 2964 | symfile_bfd = abfd = objfile->obfd; |
4262abfb | 2965 | name = objfile_name (objfile); |
c906108c SS |
2966 | |
2967 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2968 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2969 | stringtab_offset = symtab_offset + | |
c5aa993b | 2970 | num_symbols * coff_data (abfd)->local_symesz; |
c906108c SS |
2971 | |
2972 | info->min_lineno_offset = 0; | |
2973 | info->max_lineno_offset = 0; | |
2974 | bfd_map_over_sections (abfd, find_linenos, info); | |
2975 | ||
2976 | if (num_symbols > 0) | |
2977 | { | |
2978 | /* Read the string table. */ | |
2979 | init_stringtab (abfd, stringtab_offset, objfile); | |
2980 | ||
2981 | /* Read the .debug section, if present. */ | |
2982 | { | |
7be0c536 | 2983 | struct bfd_section *secp; |
c906108c | 2984 | bfd_size_type length; |
ea9f10bb | 2985 | bfd_byte *debugsec = NULL; |
c906108c SS |
2986 | |
2987 | secp = bfd_get_section_by_name (abfd, ".debug"); | |
2988 | if (secp) | |
2989 | { | |
2990 | length = bfd_section_size (abfd, secp); | |
2991 | if (length) | |
2992 | { | |
ea9f10bb | 2993 | debugsec = obstack_alloc (&objfile->objfile_obstack, length); |
c906108c | 2994 | |
ea9f10bb | 2995 | if (!bfd_get_full_section_contents (abfd, secp, &debugsec)) |
c906108c | 2996 | { |
8a3fe4f8 | 2997 | error (_("Error reading .debug section of `%s': %s"), |
c906108c SS |
2998 | name, bfd_errmsg (bfd_get_error ())); |
2999 | } | |
3000 | } | |
3001 | } | |
745eb4fd | 3002 | info->debugsec = (char *) debugsec; |
c906108c SS |
3003 | } |
3004 | } | |
3005 | ||
3006 | /* Read the symbols. We keep them in core because we will want to | |
3007 | access them randomly in read_symbol*. */ | |
3008 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); | |
3009 | if (val < 0) | |
8a3fe4f8 | 3010 | error (_("Error reading symbols from %s: %s"), |
c906108c SS |
3011 | name, bfd_errmsg (bfd_get_error ())); |
3012 | size = coff_data (abfd)->local_symesz * num_symbols; | |
b8b98ad1 TT |
3013 | info->symtbl = obstack_alloc (&objfile->objfile_obstack, size); |
3014 | info->symtbl_num_syms = num_symbols; | |
3015 | ||
3016 | val = bfd_bread (info->symtbl, size, abfd); | |
c906108c | 3017 | if (val != size) |
e2e0b3e5 | 3018 | perror_with_name (_("reading symbol table")); |
c906108c | 3019 | |
581e13c1 | 3020 | /* If we are reinitializing, or if we have never loaded syms yet, init. */ |
de1d8fb9 | 3021 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3022 | /* I'm not sure how how good num_symbols is; the rule of thumb in |
3023 | init_psymbol_list was developed for a.out. On the one hand, | |
3024 | num_symbols includes auxents. On the other hand, it doesn't | |
3025 | include N_SLINE. */ | |
3026 | init_psymbol_list (objfile, num_symbols); | |
3027 | ||
3028 | free_pending_blocks (); | |
a0b3c4fd | 3029 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c SS |
3030 | |
3031 | init_minimal_symbol_collection (); | |
56e290f4 | 3032 | make_cleanup_discard_minimal_symbols (); |
c906108c SS |
3033 | |
3034 | /* Now that the symbol table data of the executable file are all in core, | |
3035 | process them and define symbols accordingly. */ | |
3036 | ||
d4f3574e | 3037 | scan_xcoff_symtab (objfile); |
c906108c SS |
3038 | |
3039 | /* Install any minimal symbols that have been collected as the current | |
581e13c1 | 3040 | minimal symbols for this objfile. */ |
c906108c SS |
3041 | |
3042 | install_minimal_symbols (objfile); | |
3043 | ||
316a8b21 TG |
3044 | /* DWARF2 sections. */ |
3045 | ||
3046 | if (dwarf2_has_info (objfile, &dwarf2_xcoff_names)) | |
3047 | dwarf2_build_psymtabs (objfile); | |
3048 | ||
3049 | dwarf2_build_frame_info (objfile); | |
3050 | ||
c906108c SS |
3051 | do_cleanups (back_to); |
3052 | } | |
3053 | \f | |
d4f3574e | 3054 | static void |
3e43a32a | 3055 | xcoff_symfile_offsets (struct objfile *objfile, |
66f65e2b | 3056 | const struct section_addr_info *addrs) |
c906108c | 3057 | { |
4d1eb6b4 | 3058 | const char *first_section_name; |
c906108c | 3059 | |
4d1eb6b4 | 3060 | default_symfile_offsets (objfile, addrs); |
c906108c | 3061 | |
4d1eb6b4 JB |
3062 | /* Oneof the weird side-effects of default_symfile_offsets is that |
3063 | it sometimes sets some section indices to zero for sections that, | |
3064 | in fact do not exist. See the body of default_symfile_offsets | |
3065 | for more info on when that happens. Undo that, as this then allows | |
3066 | us to test whether the associated section exists or not, and then | |
3067 | access it quickly (without searching it again). */ | |
b8fbeb18 | 3068 | |
4d1eb6b4 JB |
3069 | if (objfile->num_sections == 0) |
3070 | return; /* Is that even possible? Better safe than sorry. */ | |
b8fbeb18 | 3071 | |
4d1eb6b4 JB |
3072 | first_section_name |
3073 | = bfd_section_name (objfile->obfd, objfile->sections[0].the_bfd_section); | |
b8fbeb18 | 3074 | |
4d1eb6b4 JB |
3075 | if (objfile->sect_index_text == 0 |
3076 | && strcmp (first_section_name, ".text") != 0) | |
3077 | objfile->sect_index_text = -1; | |
b8fbeb18 | 3078 | |
4d1eb6b4 JB |
3079 | if (objfile->sect_index_data == 0 |
3080 | && strcmp (first_section_name, ".data") != 0) | |
3081 | objfile->sect_index_data = -1; | |
3082 | ||
3083 | if (objfile->sect_index_bss == 0 | |
3084 | && strcmp (first_section_name, ".bss") != 0) | |
3085 | objfile->sect_index_bss = -1; | |
3086 | ||
3087 | if (objfile->sect_index_rodata == 0 | |
3088 | && strcmp (first_section_name, ".rodata") != 0) | |
3089 | objfile->sect_index_rodata = -1; | |
c906108c SS |
3090 | } |
3091 | ||
3092 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
3093 | ||
00b5771c | 3094 | static const struct sym_fns xcoff_sym_fns = |
c906108c SS |
3095 | { |
3096 | ||
7a78ae4e | 3097 | /* It is possible that coff and xcoff should be merged as |
c906108c SS |
3098 | they do have fundamental similarities (for example, the extra storage |
3099 | classes used for stabs could presumably be recognized in any COFF file). | |
3100 | However, in addition to obvious things like all the csect hair, there are | |
3101 | some subtler differences between xcoffread.c and coffread.c, notably | |
3102 | the fact that coffread.c has no need to read in all the symbols, but | |
3103 | xcoffread.c reads all the symbols and does in fact randomly access them | |
3104 | (in C_BSTAT and line number processing). */ | |
3105 | ||
3e43a32a MS |
3106 | xcoff_new_init, /* init anything gbl to entire symtab */ |
3107 | xcoff_symfile_init, /* read initial info, setup for sym_read() */ | |
3108 | xcoff_initial_scan, /* read a symbol file into symtab */ | |
b11896a5 | 3109 | NULL, /* sym_read_psymbols */ |
3e43a32a MS |
3110 | xcoff_symfile_finish, /* finished with file, cleanup */ |
3111 | xcoff_symfile_offsets, /* xlate offsets ext->int form */ | |
3112 | default_symfile_segments, /* Get segment information from a file. */ | |
3113 | aix_process_linenos, | |
3114 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3115 | NULL, /* sym_probe_fns */ |
00b5771c | 3116 | &psym_functions |
c906108c SS |
3117 | }; |
3118 | ||
d5367fe1 JB |
3119 | /* Same as xcoff_get_n_import_files, but for core files. */ |
3120 | ||
3121 | static int | |
3122 | xcoff_get_core_n_import_files (bfd *abfd) | |
3123 | { | |
3124 | asection *sect = bfd_get_section_by_name (abfd, ".ldinfo"); | |
3125 | gdb_byte buf[4]; | |
3126 | file_ptr offset = 0; | |
3127 | int n_entries = 0; | |
3128 | ||
3129 | if (sect == NULL) | |
3130 | return -1; /* Not a core file. */ | |
3131 | ||
3132 | for (offset = 0; offset < bfd_get_section_size (sect);) | |
3133 | { | |
3134 | int next; | |
3135 | ||
3136 | n_entries++; | |
3137 | ||
3138 | if (!bfd_get_section_contents (abfd, sect, buf, offset, 4)) | |
3139 | return -1; | |
3140 | next = bfd_get_32 (abfd, buf); | |
3141 | if (next == 0) | |
3142 | break; /* This is the last entry. */ | |
3143 | offset += next; | |
3144 | } | |
3145 | ||
3146 | /* Return the number of entries, excluding the first one, which is | |
3147 | the path to the executable that produced this core file. */ | |
3148 | return n_entries - 1; | |
3149 | } | |
3150 | ||
3151 | /* Return the number of import files (shared libraries) that the given | |
3152 | BFD depends on. Return -1 if this number could not be computed. */ | |
3153 | ||
3154 | int | |
3155 | xcoff_get_n_import_files (bfd *abfd) | |
3156 | { | |
3157 | asection *sect = bfd_get_section_by_name (abfd, ".loader"); | |
3158 | gdb_byte buf[4]; | |
3159 | int l_nimpid; | |
3160 | ||
3161 | /* If the ".loader" section does not exist, the objfile is probably | |
3162 | not an executable. Might be a core file... */ | |
3163 | if (sect == NULL) | |
3164 | return xcoff_get_core_n_import_files (abfd); | |
3165 | ||
3166 | /* The number of entries in the Import Files Table is stored in | |
3167 | field l_nimpid. This field is always at offset 16, and is | |
3168 | always 4 bytes long. Read those 4 bytes. */ | |
3169 | ||
3170 | if (!bfd_get_section_contents (abfd, sect, buf, 16, 4)) | |
3171 | return -1; | |
3172 | l_nimpid = bfd_get_32 (abfd, buf); | |
3173 | ||
3174 | /* By convention, the first entry is the default LIBPATH value | |
3175 | to be used by the system loader, so it does not count towards | |
3176 | the number of import files. */ | |
3177 | return l_nimpid - 1; | |
3178 | } | |
3179 | ||
b8b98ad1 TT |
3180 | /* Free the per-objfile xcoff data. */ |
3181 | ||
3182 | static void | |
3183 | xcoff_free_info (struct objfile *objfile, void *arg) | |
3184 | { | |
3185 | xfree (arg); | |
3186 | } | |
3187 | ||
63807e1d PA |
3188 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
3189 | extern initialize_file_ftype _initialize_xcoffread; | |
3190 | ||
c906108c | 3191 | void |
fba45db2 | 3192 | _initialize_xcoffread (void) |
c906108c | 3193 | { |
c256e171 | 3194 | add_symtab_fns (bfd_target_xcoff_flavour, &xcoff_sym_fns); |
b8b98ad1 TT |
3195 | |
3196 | xcoff_objfile_data_key = register_objfile_data_with_cleanup (NULL, | |
3197 | xcoff_free_info); | |
c906108c | 3198 | } |