Commit | Line | Data |
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c906108c | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
32d0add0 | 2 | Copyright (C) 1986-2015 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> | |
c0ccb908 | 27 | #ifdef HAVE_SYS_FILE_H |
c906108c SS |
28 | #include <sys/file.h> |
29 | #endif | |
53ce3c39 | 30 | #include <sys/stat.h> |
c906108c SS |
31 | |
32 | #include "coff/internal.h" | |
33 | #include "libcoff.h" /* FIXME, internal data from BFD */ | |
11ed25ac KB |
34 | #include "coff/xcoff.h" |
35 | #include "libxcoff.h" | |
c906108c | 36 | #include "coff/rs6000.h" |
63807e1d | 37 | #include "xcoffread.h" |
c906108c SS |
38 | |
39 | #include "symtab.h" | |
40 | #include "gdbtypes.h" | |
9ab9195f | 41 | /* FIXME: ezannoni/2004-02-13 Verify if the include below is really needed. */ |
c906108c SS |
42 | #include "symfile.h" |
43 | #include "objfiles.h" | |
44 | #include "buildsym.h" | |
45 | #include "stabsread.h" | |
46 | #include "expression.h" | |
c906108c | 47 | #include "complaints.h" |
ccefe4c4 | 48 | #include "psympriv.h" |
c906108c SS |
49 | |
50 | #include "gdb-stabs.h" | |
51 | ||
52 | /* For interface with stabsread.c. */ | |
53 | #include "aout/stab_gnu.h" | |
54 | ||
c906108c | 55 | \f |
b8b98ad1 TT |
56 | /* Key for XCOFF-associated data. */ |
57 | ||
58 | static const struct objfile_data *xcoff_objfile_data_key; | |
59 | ||
c906108c SS |
60 | /* We put a pointer to this structure in the read_symtab_private field |
61 | of the psymtab. */ | |
62 | ||
c5aa993b JM |
63 | struct symloc |
64 | { | |
c906108c | 65 | |
c5aa993b | 66 | /* First symbol number for this file. */ |
c906108c | 67 | |
c5aa993b | 68 | int first_symnum; |
c906108c | 69 | |
c5aa993b JM |
70 | /* Number of symbols in the section of the symbol table devoted to |
71 | this file's symbols (actually, the section bracketed may contain | |
72 | more than just this file's symbols). If numsyms is 0, the only | |
73 | reason for this thing's existence is the dependency list. Nothing | |
74 | else will happen when it is read in. */ | |
c906108c | 75 | |
c5aa993b | 76 | int numsyms; |
c906108c | 77 | |
3e43a32a MS |
78 | /* Position of the start of the line number information for this |
79 | psymtab. */ | |
c5aa993b JM |
80 | unsigned int lineno_off; |
81 | }; | |
c906108c | 82 | |
581e13c1 | 83 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
84 | |
85 | static enum language psymtab_language = language_unknown; | |
c906108c | 86 | \f |
c5aa993b | 87 | |
581e13c1 | 88 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 89 | |
c5aa993b JM |
90 | struct coff_symbol |
91 | { | |
92 | char *c_name; | |
581e13c1 MS |
93 | int c_symnum; /* Symbol number of this entry. */ |
94 | int c_naux; /* 0 if syment only, 1 if syment + auxent. */ | |
086850b2 | 95 | CORE_ADDR c_value; |
c5aa993b JM |
96 | unsigned char c_sclass; |
97 | int c_secnum; | |
98 | unsigned int c_type; | |
99 | }; | |
c906108c | 100 | |
581e13c1 | 101 | /* Last function's saved coff symbol `cs'. */ |
c906108c SS |
102 | |
103 | static struct coff_symbol fcn_cs_saved; | |
104 | ||
105 | static bfd *symfile_bfd; | |
106 | ||
107 | /* Core address of start and end of text of current source file. | |
108 | This is calculated from the first function seen after a C_FILE | |
581e13c1 | 109 | symbol. */ |
c906108c SS |
110 | |
111 | ||
112 | static CORE_ADDR cur_src_end_addr; | |
113 | ||
114 | /* Core address of the end of the first object file. */ | |
115 | ||
116 | static CORE_ADDR first_object_file_end; | |
117 | ||
581e13c1 | 118 | /* Initial symbol-table-debug-string vector length. */ |
c906108c SS |
119 | |
120 | #define INITIAL_STABVECTOR_LENGTH 40 | |
121 | ||
c906108c SS |
122 | /* Size of a COFF symbol. I think it is always 18, so I'm not sure |
123 | there is any reason not to just use a #define, but might as well | |
124 | ask BFD for the size and store it here, I guess. */ | |
125 | ||
c5aa993b | 126 | static unsigned local_symesz; |
c906108c | 127 | |
c5aa993b JM |
128 | struct coff_symfile_info |
129 | { | |
581e13c1 MS |
130 | file_ptr min_lineno_offset; /* Where in file lowest line#s are. */ |
131 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */ | |
c906108c | 132 | |
c5aa993b JM |
133 | /* Pointer to the string table. */ |
134 | char *strtbl; | |
c906108c | 135 | |
c5aa993b JM |
136 | /* Pointer to debug section. */ |
137 | char *debugsec; | |
c906108c | 138 | |
c5aa993b JM |
139 | /* Pointer to the a.out symbol table. */ |
140 | char *symtbl; | |
c906108c | 141 | |
c5aa993b JM |
142 | /* Number of symbols in symtbl. */ |
143 | int symtbl_num_syms; | |
c906108c | 144 | |
c5aa993b JM |
145 | /* Offset in data section to TOC anchor. */ |
146 | CORE_ADDR toc_offset; | |
147 | }; | |
c906108c | 148 | |
b8b98ad1 TT |
149 | /* Convenience macro to access the per-objfile XCOFF data. */ |
150 | ||
151 | #define XCOFF_DATA(objfile) \ | |
152 | ((struct coff_symfile_info *) objfile_data ((objfile), \ | |
153 | xcoff_objfile_data_key)) | |
154 | ||
316a8b21 TG |
155 | /* XCOFF names for dwarf sections. There is no compressed sections. */ |
156 | ||
157 | static const struct dwarf2_debug_sections dwarf2_xcoff_names = { | |
158 | { ".dwinfo", NULL }, | |
159 | { ".dwabrev", NULL }, | |
160 | { ".dwline", NULL }, | |
161 | { ".dwloc", NULL }, | |
33f914a1 DE |
162 | /* AIX XCOFF defines one, named DWARF section for macro debug information. |
163 | XLC does not generate debug_macinfo for DWARF4 and below. | |
164 | The section is assigned to debug_macro for DWARF5 and above. */ | |
165 | { NULL, NULL }, | |
166 | { ".dwmac", NULL }, | |
316a8b21 TG |
167 | { ".dwstr", NULL }, |
168 | { ".dwrnges", NULL }, | |
33f914a1 | 169 | { ".dwpbtyp", NULL }, |
3019eac3 | 170 | { NULL, NULL }, /* debug_addr */ |
316a8b21 TG |
171 | { ".dwframe", NULL }, |
172 | { NULL, NULL }, /* eh_frame */ | |
24d3216f TT |
173 | { NULL, NULL }, /* gdb_index */ |
174 | 23 | |
316a8b21 TG |
175 | }; |
176 | ||
23136709 KB |
177 | static void |
178 | bf_notfound_complaint (void) | |
179 | { | |
3e43a32a MS |
180 | complaint (&symfile_complaints, |
181 | _("line numbers off, `.bf' symbol not found")); | |
23136709 | 182 | } |
c906108c | 183 | |
23136709 KB |
184 | static void |
185 | ef_complaint (int arg1) | |
186 | { | |
187 | complaint (&symfile_complaints, | |
e2e0b3e5 | 188 | _("Mismatched .ef symbol ignored starting at symnum %d"), arg1); |
23136709 | 189 | } |
c906108c | 190 | |
23136709 KB |
191 | static void |
192 | eb_complaint (int arg1) | |
193 | { | |
194 | complaint (&symfile_complaints, | |
e2e0b3e5 | 195 | _("Mismatched .eb symbol ignored starting at symnum %d"), arg1); |
23136709 | 196 | } |
c906108c | 197 | |
a14ed312 | 198 | static void xcoff_initial_scan (struct objfile *, int); |
c906108c | 199 | |
a14ed312 | 200 | static void scan_xcoff_symtab (struct objfile *); |
c906108c | 201 | |
a14ed312 | 202 | static char *xcoff_next_symbol_text (struct objfile *); |
c906108c | 203 | |
a14ed312 | 204 | static void record_include_begin (struct coff_symbol *); |
c906108c SS |
205 | |
206 | static void | |
a14ed312 KB |
207 | enter_line_range (struct subfile *, unsigned, unsigned, |
208 | CORE_ADDR, CORE_ADDR, unsigned *); | |
c906108c | 209 | |
a14ed312 | 210 | static void init_stringtab (bfd *, file_ptr, struct objfile *); |
c906108c | 211 | |
a14ed312 | 212 | static void xcoff_symfile_init (struct objfile *); |
c906108c | 213 | |
a14ed312 | 214 | static void xcoff_new_init (struct objfile *); |
c906108c | 215 | |
a14ed312 | 216 | static void xcoff_symfile_finish (struct objfile *); |
c906108c | 217 | |
a14ed312 | 218 | static char *coff_getfilename (union internal_auxent *, struct objfile *); |
c906108c | 219 | |
a14ed312 | 220 | static void read_symbol (struct internal_syment *, int); |
c906108c | 221 | |
a14ed312 | 222 | static int read_symbol_lineno (int); |
c906108c | 223 | |
470d5666 | 224 | static CORE_ADDR read_symbol_nvalue (int); |
c906108c | 225 | |
a14ed312 KB |
226 | static struct symbol *process_xcoff_symbol (struct coff_symbol *, |
227 | struct objfile *); | |
c906108c | 228 | |
5c80ed9d | 229 | static void read_xcoff_symtab (struct objfile *, struct partial_symtab *); |
c906108c SS |
230 | |
231 | #if 0 | |
a14ed312 | 232 | static void add_stab_to_list (char *, struct pending_stabs **); |
c906108c SS |
233 | #endif |
234 | ||
a14ed312 | 235 | static int compare_lte (const void *, const void *); |
c906108c | 236 | |
a14ed312 | 237 | static struct linetable *arrange_linetable (struct linetable *); |
c906108c | 238 | |
a14ed312 | 239 | static void record_include_end (struct coff_symbol *); |
c906108c | 240 | |
a14ed312 | 241 | static void process_linenos (CORE_ADDR, CORE_ADDR); |
c906108c | 242 | \f |
c5aa993b | 243 | |
c906108c SS |
244 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
245 | code. */ | |
a14ed312 KB |
246 | static int secnum_to_section (int, struct objfile *); |
247 | static asection *secnum_to_bfd_section (int, struct objfile *); | |
c906108c | 248 | |
c5aa993b JM |
249 | struct find_targ_sec_arg |
250 | { | |
251 | int targ_index; | |
252 | int *resultp; | |
253 | asection **bfd_sect; | |
b8fbeb18 | 254 | struct objfile *objfile; |
c5aa993b | 255 | }; |
c906108c | 256 | |
a14ed312 | 257 | static void find_targ_sec (bfd *, asection *, void *); |
c906108c | 258 | |
c5aa993b | 259 | static void |
4efb68b1 | 260 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 261 | { |
c5aa993b | 262 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
b8fbeb18 | 263 | struct objfile *objfile = args->objfile; |
a109c7c1 | 264 | |
c906108c SS |
265 | if (sect->target_index == args->targ_index) |
266 | { | |
267 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
268 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
b8fbeb18 | 269 | *args->resultp = SECT_OFF_TEXT (objfile); |
c906108c | 270 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) |
b8fbeb18 | 271 | *args->resultp = SECT_OFF_DATA (objfile); |
c906108c | 272 | else |
65cf3563 | 273 | *args->resultp = gdb_bfd_section_index (abfd, sect); |
c906108c SS |
274 | *args->bfd_sect = sect; |
275 | } | |
276 | } | |
277 | ||
ec92004f JB |
278 | /* Search all BFD sections for the section whose target_index is |
279 | equal to N_SCNUM. Set *BFD_SECT to that section. The section's | |
280 | associated index in the objfile's section_offset table is also | |
281 | stored in *SECNUM. | |
282 | ||
283 | If no match is found, *BFD_SECT is set to NULL, and *SECNUM | |
284 | is set to the text section's number. */ | |
a109c7c1 | 285 | |
ec92004f JB |
286 | static void |
287 | xcoff_secnum_to_sections (int n_scnum, struct objfile *objfile, | |
288 | asection **bfd_sect, int *secnum) | |
289 | { | |
c906108c | 290 | struct find_targ_sec_arg args; |
ec92004f JB |
291 | |
292 | args.targ_index = n_scnum; | |
293 | args.resultp = secnum; | |
294 | args.bfd_sect = bfd_sect; | |
b8fbeb18 | 295 | args.objfile = objfile; |
ec92004f JB |
296 | |
297 | *bfd_sect = NULL; | |
298 | *secnum = SECT_OFF_TEXT (objfile); | |
299 | ||
c906108c | 300 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
c906108c SS |
301 | } |
302 | ||
ec92004f JB |
303 | /* Return the section number (SECT_OFF_*) that N_SCNUM points to. */ |
304 | ||
305 | static int | |
306 | secnum_to_section (int n_scnum, struct objfile *objfile) | |
307 | { | |
308 | int secnum; | |
309 | asection *ignored; | |
310 | ||
311 | xcoff_secnum_to_sections (n_scnum, objfile, &ignored, &secnum); | |
312 | return secnum; | |
313 | } | |
314 | ||
315 | /* Return the BFD section that N_SCNUM points to. */ | |
316 | ||
c906108c | 317 | static asection * |
ec92004f | 318 | secnum_to_bfd_section (int n_scnum, struct objfile *objfile) |
c906108c | 319 | { |
ec92004f JB |
320 | int ignored; |
321 | asection *bfd_sect; | |
a109c7c1 | 322 | |
ec92004f JB |
323 | xcoff_secnum_to_sections (n_scnum, objfile, &bfd_sect, &ignored); |
324 | return bfd_sect; | |
c906108c SS |
325 | } |
326 | \f | |
581e13c1 | 327 | /* add a given stab string into given stab vector. */ |
c906108c SS |
328 | |
329 | #if 0 | |
330 | ||
331 | static void | |
fba45db2 | 332 | add_stab_to_list (char *stabname, struct pending_stabs **stabvector) |
c906108c | 333 | { |
c5aa993b JM |
334 | if (*stabvector == NULL) |
335 | { | |
336 | *stabvector = (struct pending_stabs *) | |
337 | xmalloc (sizeof (struct pending_stabs) + | |
338 | INITIAL_STABVECTOR_LENGTH * sizeof (char *)); | |
339 | (*stabvector)->count = 0; | |
340 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
341 | } | |
342 | else if ((*stabvector)->count >= (*stabvector)->length) | |
343 | { | |
344 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
345 | *stabvector = (struct pending_stabs *) | |
346 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + | |
3e43a32a | 347 | (*stabvector)->length * sizeof (char *)); |
c5aa993b JM |
348 | } |
349 | (*stabvector)->stab[(*stabvector)->count++] = stabname; | |
c906108c SS |
350 | } |
351 | ||
352 | #endif | |
c5aa993b | 353 | \f/* *INDENT-OFF* */ |
c906108c SS |
354 | /* Linenos are processed on a file-by-file basis. |
355 | ||
356 | Two reasons: | |
357 | ||
c5aa993b | 358 | 1) xlc (IBM's native c compiler) postpones static function code |
581e13c1 | 359 | emission to the end of a compilation unit. This way it can |
c5aa993b | 360 | determine if those functions (statics) are needed or not, and |
581e13c1 | 361 | can do some garbage collection (I think). This makes line |
c5aa993b JM |
362 | numbers and corresponding addresses unordered, and we end up |
363 | with a line table like: | |
364 | ||
365 | ||
366 | lineno addr | |
367 | foo() 10 0x100 | |
368 | 20 0x200 | |
369 | 30 0x300 | |
370 | ||
371 | foo3() 70 0x400 | |
372 | 80 0x500 | |
373 | 90 0x600 | |
374 | ||
375 | static foo2() | |
376 | 40 0x700 | |
377 | 50 0x800 | |
378 | 60 0x900 | |
379 | ||
380 | and that breaks gdb's binary search on line numbers, if the | |
581e13c1 | 381 | above table is not sorted on line numbers. And that sort |
c5aa993b JM |
382 | should be on function based, since gcc can emit line numbers |
383 | like: | |
384 | ||
385 | 10 0x100 - for the init/test part of a for stmt. | |
386 | 20 0x200 | |
387 | 30 0x300 | |
388 | 10 0x400 - for the increment part of a for stmt. | |
389 | ||
581e13c1 | 390 | arrange_linetable() will do this sorting. |
c5aa993b JM |
391 | |
392 | 2) aix symbol table might look like: | |
393 | ||
394 | c_file // beginning of a new file | |
395 | .bi // beginning of include file | |
396 | .ei // end of include file | |
397 | .bi | |
398 | .ei | |
399 | ||
400 | basically, .bi/.ei pairs do not necessarily encapsulate | |
581e13c1 | 401 | their scope. They need to be recorded, and processed later |
c5aa993b JM |
402 | on when we come the end of the compilation unit. |
403 | Include table (inclTable) and process_linenos() handle | |
404 | that. */ | |
9846de1b | 405 | /* *INDENT-ON* */ |
c906108c | 406 | |
c5aa993b JM |
407 | |
408 | ||
581e13c1 | 409 | /* compare line table entry addresses. */ |
c906108c SS |
410 | |
411 | static int | |
fba45db2 | 412 | compare_lte (const void *lte1p, const void *lte2p) |
c906108c SS |
413 | { |
414 | struct linetable_entry *lte1 = (struct linetable_entry *) lte1p; | |
415 | struct linetable_entry *lte2 = (struct linetable_entry *) lte2p; | |
a109c7c1 | 416 | |
c906108c SS |
417 | return lte1->pc - lte2->pc; |
418 | } | |
419 | ||
581e13c1 MS |
420 | /* Given a line table with function entries are marked, arrange its |
421 | functions in ascending order and strip off function entry markers | |
422 | and return it in a newly created table. If the old one is good | |
423 | enough, return the old one. */ | |
c906108c SS |
424 | /* FIXME: I think all this stuff can be replaced by just passing |
425 | sort_linevec = 1 to end_symtab. */ | |
426 | ||
427 | static struct linetable * | |
b095261a | 428 | arrange_linetable (struct linetable *oldLineTb) |
c906108c | 429 | { |
c5aa993b JM |
430 | int ii, jj, newline, /* new line count */ |
431 | function_count; /* # of functions */ | |
c906108c | 432 | |
c5aa993b JM |
433 | struct linetable_entry *fentry; /* function entry vector */ |
434 | int fentry_size; /* # of function entries */ | |
435 | struct linetable *newLineTb; /* new line table */ | |
a85c52f2 | 436 | int extra_lines = 0; |
c906108c SS |
437 | |
438 | #define NUM_OF_FUNCTIONS 20 | |
439 | ||
440 | fentry_size = NUM_OF_FUNCTIONS; | |
8d749320 | 441 | fentry = XNEWVEC (struct linetable_entry, fentry_size); |
c906108c | 442 | |
c5aa993b JM |
443 | for (function_count = 0, ii = 0; ii < oldLineTb->nitems; ++ii) |
444 | { | |
c5aa993b | 445 | if (oldLineTb->item[ii].line == 0) |
581e13c1 | 446 | { /* Function entry found. */ |
c5aa993b | 447 | if (function_count >= fentry_size) |
581e13c1 | 448 | { /* Make sure you have room. */ |
c5aa993b JM |
449 | fentry_size *= 2; |
450 | fentry = (struct linetable_entry *) | |
3e43a32a MS |
451 | xrealloc (fentry, |
452 | fentry_size * sizeof (struct linetable_entry)); | |
c5aa993b JM |
453 | } |
454 | fentry[function_count].line = ii; | |
455 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
456 | ++function_count; | |
a85c52f2 UW |
457 | |
458 | /* If the function was compiled with XLC, we may have to add an | |
459 | extra line entry later. Reserve space for that. */ | |
460 | if (ii + 1 < oldLineTb->nitems | |
461 | && oldLineTb->item[ii].pc != oldLineTb->item[ii + 1].pc) | |
462 | extra_lines++; | |
c5aa993b | 463 | } |
c906108c | 464 | } |
c906108c | 465 | |
c5aa993b JM |
466 | if (function_count == 0) |
467 | { | |
b8c9b27d | 468 | xfree (fentry); |
c5aa993b JM |
469 | return oldLineTb; |
470 | } | |
c906108c | 471 | else if (function_count > 1) |
3e43a32a MS |
472 | qsort (fentry, function_count, |
473 | sizeof (struct linetable_entry), compare_lte); | |
c906108c | 474 | |
581e13c1 | 475 | /* Allocate a new line table. */ |
c906108c SS |
476 | newLineTb = (struct linetable *) |
477 | xmalloc | |
c5aa993b | 478 | (sizeof (struct linetable) + |
a85c52f2 | 479 | (oldLineTb->nitems - function_count + extra_lines) * sizeof (struct linetable_entry)); |
c906108c | 480 | |
581e13c1 MS |
481 | /* If line table does not start with a function beginning, copy up until |
482 | a function begin. */ | |
c906108c SS |
483 | |
484 | newline = 0; | |
485 | if (oldLineTb->item[0].line != 0) | |
c5aa993b JM |
486 | for (newline = 0; |
487 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
c906108c SS |
488 | newLineTb->item[newline] = oldLineTb->item[newline]; |
489 | ||
581e13c1 | 490 | /* Now copy function lines one by one. */ |
c906108c | 491 | |
c5aa993b JM |
492 | for (ii = 0; ii < function_count; ++ii) |
493 | { | |
a85c52f2 UW |
494 | /* If the function was compiled with XLC, we may have to add an |
495 | extra line to cover the function prologue. */ | |
496 | jj = fentry[ii].line; | |
497 | if (jj + 1 < oldLineTb->nitems | |
498 | && oldLineTb->item[jj].pc != oldLineTb->item[jj + 1].pc) | |
499 | { | |
500 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
501 | newLineTb->item[newline].line = oldLineTb->item[jj + 1].line; | |
502 | newline++; | |
503 | } | |
504 | ||
c5aa993b JM |
505 | for (jj = fentry[ii].line + 1; |
506 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
507 | ++jj, ++newline) | |
508 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
509 | } | |
b8c9b27d | 510 | xfree (fentry); |
a85c52f2 UW |
511 | /* The number of items in the line table must include these |
512 | extra lines which were added in case of XLC compiled functions. */ | |
513 | newLineTb->nitems = oldLineTb->nitems - function_count + extra_lines; | |
c5aa993b JM |
514 | return newLineTb; |
515 | } | |
c906108c SS |
516 | |
517 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
581e13c1 | 518 | following `IncludeChain'. At the end of each symtab (end_symtab), |
c906108c | 519 | we will determine if we should create additional symtab's to |
581e13c1 | 520 | represent if (the include files. */ |
c906108c SS |
521 | |
522 | ||
c5aa993b JM |
523 | typedef struct _inclTable |
524 | { | |
525 | char *name; /* include filename */ | |
c906108c SS |
526 | |
527 | /* Offsets to the line table. end points to the last entry which is | |
528 | part of this include file. */ | |
c5aa993b JM |
529 | int begin, end; |
530 | ||
c906108c | 531 | struct subfile *subfile; |
581e13c1 | 532 | unsigned funStartLine; /* Start line # of its function. */ |
c5aa993b JM |
533 | } |
534 | InclTable; | |
c906108c SS |
535 | |
536 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
c5aa993b JM |
537 | static InclTable *inclTable; /* global include table */ |
538 | static int inclIndx; /* last entry to table */ | |
539 | static int inclLength; /* table length */ | |
540 | static int inclDepth; /* nested include depth */ | |
c906108c | 541 | |
a14ed312 | 542 | static void allocate_include_entry (void); |
c906108c SS |
543 | |
544 | static void | |
fba45db2 | 545 | record_include_begin (struct coff_symbol *cs) |
c906108c SS |
546 | { |
547 | if (inclDepth) | |
548 | { | |
549 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
c5aa993b | 550 | of course, but in corresponding .s files.). */ |
c906108c SS |
551 | |
552 | /* This can happen with old versions of GCC. | |
c5aa993b JM |
553 | GCC 2.3.3-930426 does not exhibit this on a test case which |
554 | a user said produced the message for him. */ | |
e2e0b3e5 | 555 | complaint (&symfile_complaints, _("Nested C_BINCL symbols")); |
c906108c SS |
556 | } |
557 | ++inclDepth; | |
558 | ||
559 | allocate_include_entry (); | |
560 | ||
c5aa993b JM |
561 | inclTable[inclIndx].name = cs->c_name; |
562 | inclTable[inclIndx].begin = cs->c_value; | |
c906108c SS |
563 | } |
564 | ||
565 | static void | |
fba45db2 | 566 | record_include_end (struct coff_symbol *cs) |
c906108c | 567 | { |
c5aa993b | 568 | InclTable *pTbl; |
c906108c SS |
569 | |
570 | if (inclDepth == 0) | |
571 | { | |
e2e0b3e5 | 572 | complaint (&symfile_complaints, _("Mismatched C_BINCL/C_EINCL pair")); |
c906108c SS |
573 | } |
574 | ||
575 | allocate_include_entry (); | |
576 | ||
c5aa993b | 577 | pTbl = &inclTable[inclIndx]; |
c906108c SS |
578 | pTbl->end = cs->c_value; |
579 | ||
580 | --inclDepth; | |
581 | ++inclIndx; | |
582 | } | |
583 | ||
584 | static void | |
fba45db2 | 585 | allocate_include_entry (void) |
c906108c SS |
586 | { |
587 | if (inclTable == NULL) | |
588 | { | |
8d749320 | 589 | inclTable = XCNEWVEC (InclTable, INITIAL_INCLUDE_TABLE_LENGTH); |
c906108c SS |
590 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; |
591 | inclIndx = 0; | |
592 | } | |
593 | else if (inclIndx >= inclLength) | |
594 | { | |
595 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
8d749320 | 596 | inclTable = XRESIZEVEC (InclTable, inclTable, inclLength); |
c5aa993b JM |
597 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, |
598 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
c906108c SS |
599 | } |
600 | } | |
601 | ||
602 | /* Global variable to pass the psymtab down to all the routines involved | |
603 | in psymtab to symtab processing. */ | |
604 | static struct partial_symtab *this_symtab_psymtab; | |
605 | ||
5c80ed9d TT |
606 | /* Objfile related to this_symtab_psymtab; set at the same time. */ |
607 | static struct objfile *this_symtab_objfile; | |
608 | ||
c906108c | 609 | /* given the start and end addresses of a compilation unit (or a csect, |
581e13c1 | 610 | at times) process its lines and create appropriate line vectors. */ |
c906108c SS |
611 | |
612 | static void | |
fba45db2 | 613 | process_linenos (CORE_ADDR start, CORE_ADDR end) |
c906108c SS |
614 | { |
615 | int offset, ii; | |
b8b98ad1 | 616 | file_ptr max_offset |
5c80ed9d | 617 | = XCOFF_DATA (this_symtab_objfile)->max_lineno_offset; |
c906108c SS |
618 | |
619 | /* subfile structure for the main compilation unit. */ | |
620 | struct subfile main_subfile; | |
621 | ||
622 | /* In the main source file, any time we see a function entry, we | |
623 | reset this variable to function's absolute starting line number. | |
624 | All the following line numbers in the function are relative to | |
625 | this, and we record absolute line numbers in record_line(). */ | |
626 | ||
627 | unsigned int main_source_baseline = 0; | |
628 | ||
629 | unsigned *firstLine; | |
630 | ||
631 | offset = | |
c5aa993b | 632 | ((struct symloc *) this_symtab_psymtab->read_symtab_private)->lineno_off; |
c906108c SS |
633 | if (offset == 0) |
634 | goto return_after_cleanup; | |
635 | ||
636 | memset (&main_subfile, '\0', sizeof (main_subfile)); | |
637 | ||
638 | if (inclIndx == 0) | |
581e13c1 MS |
639 | /* All source lines were in the main source file. None in include |
640 | files. */ | |
c906108c | 641 | |
c5aa993b JM |
642 | enter_line_range (&main_subfile, offset, 0, start, end, |
643 | &main_source_baseline); | |
c906108c SS |
644 | |
645 | else | |
646 | { | |
647 | /* There was source with line numbers in include files. */ | |
7a78ae4e ND |
648 | |
649 | int linesz = | |
5c80ed9d | 650 | coff_data (this_symtab_objfile->obfd)->local_linesz; |
c906108c | 651 | main_source_baseline = 0; |
7a78ae4e | 652 | |
c5aa993b | 653 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c SS |
654 | { |
655 | struct subfile *tmpSubfile; | |
656 | ||
657 | /* If there is main file source before include file, enter it. */ | |
658 | if (offset < inclTable[ii].begin) | |
659 | { | |
660 | enter_line_range | |
7a78ae4e | 661 | (&main_subfile, offset, inclTable[ii].begin - linesz, |
c906108c SS |
662 | start, 0, &main_source_baseline); |
663 | } | |
664 | ||
46212e0b | 665 | if (strcmp (inclTable[ii].name, get_last_source_file ()) == 0) |
c5933f6d JB |
666 | { |
667 | /* The entry in the include table refers to the main source | |
581e13c1 | 668 | file. Add the lines to the main subfile. */ |
c5933f6d JB |
669 | |
670 | main_source_baseline = inclTable[ii].funStartLine; | |
671 | enter_line_range | |
672 | (&main_subfile, inclTable[ii].begin, inclTable[ii].end, | |
673 | start, 0, &main_source_baseline); | |
674 | inclTable[ii].subfile = &main_subfile; | |
675 | } | |
676 | else | |
677 | { | |
c5933f6d | 678 | /* Have a new subfile for the include file. */ |
c906108c | 679 | |
8d749320 | 680 | tmpSubfile = inclTable[ii].subfile = XNEW (struct subfile); |
c906108c | 681 | |
c5933f6d JB |
682 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
683 | firstLine = &(inclTable[ii].funStartLine); | |
684 | ||
685 | /* Enter include file's lines now. */ | |
686 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
687 | inclTable[ii].end, start, 0, firstLine); | |
688 | } | |
c906108c SS |
689 | |
690 | if (offset <= inclTable[ii].end) | |
7a78ae4e | 691 | offset = inclTable[ii].end + linesz; |
c906108c SS |
692 | } |
693 | ||
694 | /* All the include files' line have been processed at this point. Now, | |
c5aa993b | 695 | enter remaining lines of the main file, if any left. */ |
7a78ae4e | 696 | if (offset < max_offset + 1 - linesz) |
c906108c | 697 | { |
c5aa993b | 698 | enter_line_range (&main_subfile, offset, 0, start, end, |
c906108c SS |
699 | &main_source_baseline); |
700 | } | |
701 | } | |
702 | ||
703 | /* Process main file's line numbers. */ | |
704 | if (main_subfile.line_vector) | |
705 | { | |
706 | struct linetable *lineTb, *lv; | |
707 | ||
708 | lv = main_subfile.line_vector; | |
709 | ||
581e13c1 MS |
710 | /* Line numbers are not necessarily ordered. xlc compilation will |
711 | put static function to the end. */ | |
c906108c SS |
712 | |
713 | lineTb = arrange_linetable (lv); | |
714 | if (lv == lineTb) | |
715 | { | |
716 | current_subfile->line_vector = (struct linetable *) | |
717 | xrealloc (lv, (sizeof (struct linetable) | |
718 | + lv->nitems * sizeof (struct linetable_entry))); | |
719 | } | |
720 | else | |
721 | { | |
b8c9b27d | 722 | xfree (lv); |
c906108c SS |
723 | current_subfile->line_vector = lineTb; |
724 | } | |
725 | ||
c5aa993b | 726 | current_subfile->line_vector_length = |
c906108c SS |
727 | current_subfile->line_vector->nitems; |
728 | } | |
729 | ||
730 | /* Now, process included files' line numbers. */ | |
731 | ||
c5aa993b | 732 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c | 733 | { |
c5933f6d | 734 | if (inclTable[ii].subfile != ((struct subfile *) &main_subfile) |
3e43a32a MS |
735 | && (inclTable[ii].subfile)->line_vector) /* Useless if!!! |
736 | FIXMEmgo */ | |
c906108c SS |
737 | { |
738 | struct linetable *lineTb, *lv; | |
739 | ||
740 | lv = (inclTable[ii].subfile)->line_vector; | |
741 | ||
581e13c1 MS |
742 | /* Line numbers are not necessarily ordered. xlc compilation will |
743 | put static function to the end. */ | |
c906108c SS |
744 | |
745 | lineTb = arrange_linetable (lv); | |
746 | ||
747 | push_subfile (); | |
748 | ||
749 | /* For the same include file, we might want to have more than one | |
750 | subfile. This happens if we have something like: | |
751 | ||
c5aa993b JM |
752 | ...... |
753 | #include "foo.h" | |
754 | ...... | |
755 | #include "foo.h" | |
756 | ...... | |
c906108c | 757 | |
581e13c1 | 758 | while foo.h including code in it. (stupid but possible) |
c906108c SS |
759 | Since start_subfile() looks at the name and uses an |
760 | existing one if finds, we need to provide a fake name and | |
761 | fool it. */ | |
762 | ||
763 | #if 0 | |
4d663531 | 764 | start_subfile (inclTable[ii].name); |
c906108c SS |
765 | #else |
766 | { | |
767 | /* Pick a fake name that will produce the same results as this | |
768 | one when passed to deduce_language_from_filename. Kludge on | |
769 | top of kludge. */ | |
770 | char *fakename = strrchr (inclTable[ii].name, '.'); | |
a109c7c1 | 771 | |
c906108c SS |
772 | if (fakename == NULL) |
773 | fakename = " ?"; | |
4d663531 | 774 | start_subfile (fakename); |
b8c9b27d | 775 | xfree (current_subfile->name); |
c906108c | 776 | } |
c2d11a7d | 777 | current_subfile->name = xstrdup (inclTable[ii].name); |
c906108c SS |
778 | #endif |
779 | ||
780 | if (lv == lineTb) | |
781 | { | |
782 | current_subfile->line_vector = | |
783 | (struct linetable *) xrealloc | |
c5aa993b JM |
784 | (lv, (sizeof (struct linetable) |
785 | + lv->nitems * sizeof (struct linetable_entry))); | |
c906108c SS |
786 | |
787 | } | |
788 | else | |
789 | { | |
b8c9b27d | 790 | xfree (lv); |
c906108c SS |
791 | current_subfile->line_vector = lineTb; |
792 | } | |
793 | ||
c5aa993b | 794 | current_subfile->line_vector_length = |
c906108c | 795 | current_subfile->line_vector->nitems; |
4d663531 | 796 | start_subfile (pop_subfile ()); |
c906108c SS |
797 | } |
798 | } | |
799 | ||
c5aa993b | 800 | return_after_cleanup: |
c906108c SS |
801 | |
802 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
803 | inclIndx = 0; | |
c906108c SS |
804 | } |
805 | ||
c295b2e5 | 806 | static void |
f56ce883 | 807 | aix_process_linenos (struct objfile *objfile) |
c906108c | 808 | { |
316a8b21 TG |
809 | /* There is no linenos to read if there are only dwarf info. */ |
810 | if (this_symtab_psymtab == NULL) | |
811 | return; | |
812 | ||
581e13c1 | 813 | /* Process line numbers and enter them into line vector. */ |
c906108c SS |
814 | process_linenos (last_source_start_addr, cur_src_end_addr); |
815 | } | |
816 | ||
817 | ||
818 | /* Enter a given range of lines into the line vector. | |
819 | can be called in the following two ways: | |
3e43a32a MS |
820 | enter_line_range (subfile, beginoffset, endoffset, |
821 | startaddr, 0, firstLine) or | |
822 | enter_line_range (subfile, beginoffset, 0, | |
823 | startaddr, endaddr, firstLine) | |
c906108c SS |
824 | |
825 | endoffset points to the last line table entry that we should pay | |
826 | attention to. */ | |
827 | ||
828 | static void | |
3e43a32a MS |
829 | enter_line_range (struct subfile *subfile, unsigned beginoffset, |
830 | unsigned endoffset, /* offsets to line table */ | |
fba45db2 KB |
831 | CORE_ADDR startaddr, /* offsets to line table */ |
832 | CORE_ADDR endaddr, unsigned *firstLine) | |
c906108c | 833 | { |
5c80ed9d | 834 | struct objfile *objfile = this_symtab_objfile; |
fbf65064 | 835 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
836 | unsigned int curoffset; |
837 | CORE_ADDR addr; | |
7a78ae4e | 838 | void *ext_lnno; |
c906108c SS |
839 | struct internal_lineno int_lnno; |
840 | unsigned int limit_offset; | |
841 | bfd *abfd; | |
7a78ae4e | 842 | int linesz; |
c906108c SS |
843 | |
844 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) | |
845 | return; | |
846 | curoffset = beginoffset; | |
b8b98ad1 | 847 | limit_offset = XCOFF_DATA (objfile)->max_lineno_offset; |
c906108c SS |
848 | |
849 | if (endoffset != 0) | |
850 | { | |
851 | if (endoffset >= limit_offset) | |
852 | { | |
23136709 | 853 | complaint (&symfile_complaints, |
e2e0b3e5 | 854 | _("Bad line table offset in C_EINCL directive")); |
c906108c SS |
855 | return; |
856 | } | |
857 | limit_offset = endoffset; | |
858 | } | |
859 | else | |
860 | limit_offset -= 1; | |
7a78ae4e | 861 | |
fbf65064 | 862 | abfd = objfile->obfd; |
7a78ae4e ND |
863 | linesz = coff_data (abfd)->local_linesz; |
864 | ext_lnno = alloca (linesz); | |
c906108c SS |
865 | |
866 | while (curoffset <= limit_offset) | |
867 | { | |
868 | bfd_seek (abfd, curoffset, SEEK_SET); | |
3a42e9d0 | 869 | bfd_bread (ext_lnno, linesz, abfd); |
7a78ae4e | 870 | bfd_coff_swap_lineno_in (abfd, ext_lnno, &int_lnno); |
c906108c SS |
871 | |
872 | /* Find the address this line represents. */ | |
873 | addr = (int_lnno.l_lnno | |
874 | ? int_lnno.l_addr.l_paddr | |
875 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
fbf65064 | 876 | addr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
877 | |
878 | if (addr < startaddr || (endaddr && addr >= endaddr)) | |
879 | return; | |
880 | ||
881 | if (int_lnno.l_lnno == 0) | |
882 | { | |
883 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
fbf65064 | 884 | record_line (subfile, 0, gdbarch_addr_bits_remove (gdbarch, addr)); |
c906108c SS |
885 | --(*firstLine); |
886 | } | |
887 | else | |
fbf65064 UW |
888 | record_line (subfile, *firstLine + int_lnno.l_lnno, |
889 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
7a78ae4e | 890 | curoffset += linesz; |
c906108c SS |
891 | } |
892 | } | |
893 | ||
894 | ||
895 | /* Save the vital information for use when closing off the current file. | |
896 | NAME is the file name the symbols came from, START_ADDR is the first | |
897 | text address for the file, and SIZE is the number of bytes of text. */ | |
898 | ||
899 | #define complete_symtab(name, start_addr) { \ | |
46212e0b | 900 | set_last_source_file (name); \ |
1b36a34b | 901 | last_source_start_addr = start_addr; \ |
c906108c SS |
902 | } |
903 | ||
904 | ||
905 | /* Refill the symbol table input buffer | |
906 | and set the variables that control fetching entries from it. | |
907 | Reports an error if no data available. | |
908 | This function can read past the end of the symbol table | |
909 | (into the string table) but this does no harm. */ | |
910 | ||
ec92004f JB |
911 | /* Create a new minimal symbol (using prim_record_minimal_symbol_and_info). |
912 | ||
4d1eb6b4 JB |
913 | Creation of all new minimal symbols should go through this function |
914 | rather than calling the various prim_record_[...] functions in order | |
915 | to make sure that all symbol addresses get properly relocated. | |
916 | ||
ec92004f JB |
917 | Arguments are: |
918 | ||
919 | NAME - the symbol's name (but if NAME starts with a period, that | |
920 | leading period is discarded). | |
4d1eb6b4 JB |
921 | ADDRESS - the symbol's address, prior to relocation. This function |
922 | relocates the address before recording the minimal symbol. | |
ec92004f JB |
923 | MS_TYPE - the symbol's type. |
924 | N_SCNUM - the symbol's XCOFF section number. | |
925 | OBJFILE - the objfile associated with the minimal symbol. */ | |
c906108c | 926 | |
ec92004f JB |
927 | static void |
928 | record_minimal_symbol (const char *name, CORE_ADDR address, | |
929 | enum minimal_symbol_type ms_type, | |
930 | int n_scnum, | |
931 | struct objfile *objfile) | |
932 | { | |
4d1eb6b4 JB |
933 | int section = secnum_to_section (n_scnum, objfile); |
934 | ||
ec92004f JB |
935 | if (name[0] == '.') |
936 | ++name; | |
937 | ||
ec92004f | 938 | prim_record_minimal_symbol_and_info (name, address, ms_type, |
e6dc44a8 TT |
939 | secnum_to_section (n_scnum, objfile), |
940 | objfile); | |
ec92004f | 941 | } |
c906108c | 942 | |
581e13c1 MS |
943 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
944 | nested. At any given time, a symbol can only be in one static block. | |
945 | This is the base address of current static block, zero if non exists. */ | |
c5aa993b | 946 | |
c906108c SS |
947 | static int static_block_base = 0; |
948 | ||
949 | /* Section number for the current static block. */ | |
950 | ||
951 | static int static_block_section = -1; | |
952 | ||
581e13c1 | 953 | /* true if space for symbol name has been allocated. */ |
c906108c SS |
954 | |
955 | static int symname_alloced = 0; | |
956 | ||
957 | /* Next symbol to read. Pointer into raw seething symbol table. */ | |
958 | ||
959 | static char *raw_symbol; | |
960 | ||
961 | /* This is the function which stabsread.c calls to get symbol | |
962 | continuations. */ | |
963 | ||
964 | static char * | |
fba45db2 | 965 | xcoff_next_symbol_text (struct objfile *objfile) |
c906108c SS |
966 | { |
967 | struct internal_syment symbol; | |
c906108c | 968 | char *retval; |
a109c7c1 | 969 | |
581e13c1 | 970 | /* FIXME: is this the same as the passed arg? */ |
5c80ed9d TT |
971 | if (this_symtab_objfile) |
972 | objfile = this_symtab_objfile; | |
c906108c SS |
973 | |
974 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); | |
975 | if (symbol.n_zeroes) | |
976 | { | |
e2e0b3e5 | 977 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
978 | |
979 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 980 | code does something reasonable. */ |
c906108c SS |
981 | retval = ""; |
982 | } | |
983 | else if (symbol.n_sclass & 0x80) | |
984 | { | |
b8b98ad1 | 985 | retval = XCOFF_DATA (objfile)->debugsec + symbol.n_offset; |
3e43a32a | 986 | raw_symbol += coff_data (objfile->obfd)->local_symesz; |
c906108c SS |
987 | ++symnum; |
988 | } | |
989 | else | |
990 | { | |
e2e0b3e5 | 991 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
992 | |
993 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 994 | code does something reasonable. */ |
c906108c SS |
995 | retval = ""; |
996 | } | |
997 | return retval; | |
998 | } | |
999 | ||
1000 | /* Read symbols for a given partial symbol table. */ | |
1001 | ||
1002 | static void | |
5c80ed9d | 1003 | read_xcoff_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 1004 | { |
c906108c | 1005 | bfd *abfd = objfile->obfd; |
581e13c1 | 1006 | char *raw_auxptr; /* Pointer to first raw aux entry for sym. */ |
b8b98ad1 TT |
1007 | struct coff_symfile_info *xcoff = XCOFF_DATA (objfile); |
1008 | char *strtbl = xcoff->strtbl; | |
1009 | char *debugsec = xcoff->debugsec; | |
554d387d | 1010 | const char *debugfmt = bfd_xcoff_is_xcoff64 (abfd) ? "XCOFF64" : "XCOFF"; |
c906108c SS |
1011 | |
1012 | struct internal_syment symbol[1]; | |
1013 | union internal_auxent main_aux; | |
1014 | struct coff_symbol cs[1]; | |
1015 | CORE_ADDR file_start_addr = 0; | |
1016 | CORE_ADDR file_end_addr = 0; | |
1017 | ||
1018 | int next_file_symnum = -1; | |
1019 | unsigned int max_symnum; | |
1020 | int just_started = 1; | |
1021 | int depth = 0; | |
086850b2 | 1022 | CORE_ADDR fcn_start_addr = 0; |
c906108c | 1023 | |
238ae9af | 1024 | struct coff_symbol fcn_stab_saved = { 0 }; |
c906108c | 1025 | |
581e13c1 | 1026 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
3672b1be | 1027 | union internal_auxent fcn_aux_saved = main_aux; |
fe978cb0 | 1028 | struct context_stack *newobj; |
c906108c | 1029 | |
581e13c1 | 1030 | char *filestring = " _start_ "; /* Name of the current file. */ |
c906108c | 1031 | |
40301fb7 | 1032 | const char *last_csect_name; /* Last seen csect's name. */ |
c906108c SS |
1033 | |
1034 | this_symtab_psymtab = pst; | |
5c80ed9d | 1035 | this_symtab_objfile = objfile; |
c906108c SS |
1036 | |
1037 | /* Get the appropriate COFF "constants" related to the file we're | |
581e13c1 | 1038 | handling. */ |
c906108c SS |
1039 | local_symesz = coff_data (abfd)->local_symesz; |
1040 | ||
46212e0b | 1041 | set_last_source_file (NULL); |
c906108c | 1042 | last_csect_name = 0; |
c906108c SS |
1043 | |
1044 | start_stabs (); | |
4d663531 | 1045 | start_symtab (objfile, filestring, (char *) NULL, file_start_addr); |
7a78ae4e | 1046 | record_debugformat (debugfmt); |
c5aa993b | 1047 | symnum = ((struct symloc *) pst->read_symtab_private)->first_symnum; |
c906108c | 1048 | max_symnum = |
c5aa993b | 1049 | symnum + ((struct symloc *) pst->read_symtab_private)->numsyms; |
c906108c SS |
1050 | first_object_file_end = 0; |
1051 | ||
b8b98ad1 | 1052 | raw_symbol = xcoff->symtbl + symnum * local_symesz; |
c906108c SS |
1053 | |
1054 | while (symnum < max_symnum) | |
1055 | { | |
c906108c SS |
1056 | QUIT; /* make this command interruptable. */ |
1057 | ||
1058 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
581e13c1 | 1059 | /* read one symbol into `cs' structure. After processing the |
c5aa993b | 1060 | whole symbol table, only string table will be kept in memory, |
581e13c1 | 1061 | symbol table and debug section of xcoff will be freed. Thus |
c5aa993b | 1062 | we can mark symbols with names in string table as |
581e13c1 | 1063 | `alloced'. */ |
c906108c SS |
1064 | { |
1065 | int ii; | |
1066 | ||
1067 | /* Swap and align the symbol into a reasonable C structure. */ | |
1068 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1069 | ||
1070 | cs->c_symnum = symnum; | |
1071 | cs->c_naux = symbol->n_numaux; | |
1072 | if (symbol->n_zeroes) | |
1073 | { | |
1074 | symname_alloced = 0; | |
1075 | /* We must use the original, unswapped, name here so the name field | |
1076 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1077 | we use the new field, it gets overwritten for each symbol. */ | |
c5aa993b | 1078 | cs->c_name = ((struct external_syment *) raw_symbol)->e.e_name; |
c906108c SS |
1079 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1080 | '\0'-terminated. */ | |
1081 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1082 | { | |
1083 | char *p; | |
a109c7c1 | 1084 | |
224c3ddb SM |
1085 | p = (char *) obstack_alloc (&objfile->objfile_obstack, |
1086 | E_SYMNMLEN + 1); | |
c906108c SS |
1087 | strncpy (p, cs->c_name, E_SYMNMLEN); |
1088 | p[E_SYMNMLEN] = '\0'; | |
1089 | cs->c_name = p; | |
1090 | symname_alloced = 1; | |
1091 | } | |
1092 | } | |
1093 | else if (symbol->n_sclass & 0x80) | |
1094 | { | |
1095 | cs->c_name = debugsec + symbol->n_offset; | |
1096 | symname_alloced = 0; | |
1097 | } | |
1098 | else | |
1099 | { | |
1100 | /* in string table */ | |
c5aa993b | 1101 | cs->c_name = strtbl + (int) symbol->n_offset; |
c906108c SS |
1102 | symname_alloced = 1; |
1103 | } | |
1104 | cs->c_value = symbol->n_value; | |
1105 | cs->c_sclass = symbol->n_sclass; | |
1106 | cs->c_secnum = symbol->n_scnum; | |
c5aa993b | 1107 | cs->c_type = (unsigned) symbol->n_type; |
c906108c | 1108 | |
7a78ae4e | 1109 | raw_symbol += local_symesz; |
c906108c SS |
1110 | ++symnum; |
1111 | ||
1112 | /* Save addr of first aux entry. */ | |
1113 | raw_auxptr = raw_symbol; | |
1114 | ||
1115 | /* Skip all the auxents associated with this symbol. */ | |
1116 | for (ii = symbol->n_numaux; ii; --ii) | |
1117 | { | |
1118 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1119 | ++symnum; | |
1120 | } | |
1121 | } | |
1122 | ||
581e13c1 | 1123 | /* if symbol name starts with ".$" or "$", ignore it. */ |
c906108c SS |
1124 | if (cs->c_name[0] == '$' |
1125 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1126 | continue; | |
1127 | ||
1128 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
1129 | { | |
46212e0b | 1130 | if (get_last_source_file ()) |
c906108c | 1131 | { |
43f3e411 DE |
1132 | pst->compunit_symtab = end_symtab (cur_src_end_addr, |
1133 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1134 | end_stabs (); |
1135 | } | |
1136 | ||
1137 | start_stabs (); | |
4d663531 | 1138 | start_symtab (objfile, "_globals_", (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1139 | record_debugformat (debugfmt); |
c906108c | 1140 | cur_src_end_addr = first_object_file_end; |
581e13c1 | 1141 | /* Done with all files, everything from here on is globals. */ |
c906108c SS |
1142 | } |
1143 | ||
c906108c SS |
1144 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) |
1145 | && cs->c_naux == 1) | |
1146 | { | |
1147 | /* Dealing with a symbol with a csect entry. */ | |
1148 | ||
1149 | #define CSECT(PP) ((PP)->x_csect) | |
1150 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1151 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1152 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1153 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1154 | ||
1155 | /* Convert the auxent to something we can access. */ | |
1156 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1157 | 0, cs->c_naux, &main_aux); | |
1158 | ||
1159 | switch (CSECT_SMTYP (&main_aux)) | |
1160 | { | |
1161 | ||
1162 | case XTY_ER: | |
1163 | /* Ignore all external references. */ | |
1164 | continue; | |
1165 | ||
1166 | case XTY_SD: | |
1167 | /* A section description. */ | |
1168 | { | |
1169 | switch (CSECT_SCLAS (&main_aux)) | |
1170 | { | |
1171 | ||
1172 | case XMC_PR: | |
1173 | { | |
1174 | ||
1175 | /* A program csect is seen. We have to allocate one | |
c5aa993b JM |
1176 | symbol table for each program csect. Normally gdb |
1177 | prefers one symtab for each source file. In case | |
1178 | of AIX, one source file might include more than one | |
1179 | [PR] csect, and they don't have to be adjacent in | |
581e13c1 | 1180 | terms of the space they occupy in memory. Thus, one |
c5aa993b JM |
1181 | single source file might get fragmented in the |
1182 | memory and gdb's file start and end address | |
1183 | approach does not work! GCC (and I think xlc) seem | |
1184 | to put all the code in the unnamed program csect. */ | |
c906108c SS |
1185 | |
1186 | if (last_csect_name) | |
1187 | { | |
1188 | complete_symtab (filestring, file_start_addr); | |
1189 | cur_src_end_addr = file_end_addr; | |
43f3e411 | 1190 | end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1191 | end_stabs (); |
1192 | start_stabs (); | |
1193 | /* Give all csects for this source file the same | |
1194 | name. */ | |
4d663531 DE |
1195 | start_symtab (objfile, filestring, NULL, |
1196 | (CORE_ADDR) 0); | |
7a78ae4e | 1197 | record_debugformat (debugfmt); |
c906108c SS |
1198 | } |
1199 | ||
1200 | /* If this is the very first csect seen, | |
581e13c1 | 1201 | basically `__start'. */ |
c906108c SS |
1202 | if (just_started) |
1203 | { | |
1204 | first_object_file_end | |
1205 | = cs->c_value + CSECT_LEN (&main_aux); | |
1206 | just_started = 0; | |
1207 | } | |
1208 | ||
1209 | file_start_addr = | |
1210 | cs->c_value + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1211 | SECT_OFF_TEXT (objfile)); |
c906108c SS |
1212 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); |
1213 | ||
40301fb7 JB |
1214 | if (cs->c_name && (cs->c_name[0] == '.' || cs->c_name[0] == '@')) |
1215 | last_csect_name = cs->c_name; | |
c906108c SS |
1216 | } |
1217 | continue; | |
1218 | ||
1219 | /* All other symbols are put into the minimal symbol | |
1220 | table only. */ | |
1221 | ||
1222 | case XMC_RW: | |
1223 | continue; | |
1224 | ||
1225 | case XMC_TC0: | |
1226 | continue; | |
1227 | ||
1228 | case XMC_TC: | |
1229 | continue; | |
1230 | ||
1231 | default: | |
1232 | /* Ignore the symbol. */ | |
1233 | continue; | |
1234 | } | |
1235 | } | |
1236 | break; | |
1237 | ||
1238 | case XTY_LD: | |
1239 | ||
1240 | switch (CSECT_SCLAS (&main_aux)) | |
1241 | { | |
1242 | case XMC_PR: | |
581e13c1 | 1243 | /* a function entry point. */ |
c906108c SS |
1244 | function_entry_point: |
1245 | ||
1246 | fcn_start_addr = cs->c_value; | |
1247 | ||
1248 | /* save the function header info, which will be used | |
581e13c1 | 1249 | when `.bf' is seen. */ |
c906108c SS |
1250 | fcn_cs_saved = *cs; |
1251 | fcn_aux_saved = main_aux; | |
1252 | continue; | |
1253 | ||
1254 | case XMC_GL: | |
581e13c1 | 1255 | /* shared library function trampoline code entry point. */ |
c906108c SS |
1256 | continue; |
1257 | ||
1258 | case XMC_DS: | |
1259 | /* The symbols often have the same names as debug symbols for | |
1260 | functions, and confuse lookup_symbol. */ | |
1261 | continue; | |
1262 | ||
1263 | default: | |
1264 | /* xlc puts each variable in a separate csect, so we get | |
1265 | an XTY_SD for each variable. But gcc puts several | |
1266 | variables in a csect, so that each variable only gets | |
581e13c1 | 1267 | an XTY_LD. This will typically be XMC_RW; I suspect |
c906108c SS |
1268 | XMC_RO and XMC_BS might be possible too. |
1269 | These variables are put in the minimal symbol table | |
1270 | only. */ | |
1271 | continue; | |
1272 | } | |
1273 | break; | |
1274 | ||
1275 | case XTY_CM: | |
1276 | /* Common symbols are put into the minimal symbol table only. */ | |
1277 | continue; | |
1278 | ||
1279 | default: | |
1280 | break; | |
1281 | } | |
1282 | } | |
1283 | ||
977adac5 ND |
1284 | /* If explicitly specified as a function, treat is as one. This check |
1285 | evaluates to true for @FIX* bigtoc CSECT symbols, so it must occur | |
1286 | after the above CSECT check. */ | |
1287 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
1288 | { | |
1289 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1290 | 0, cs->c_naux, &main_aux); | |
1291 | goto function_entry_point; | |
1292 | } | |
1293 | ||
c906108c SS |
1294 | switch (cs->c_sclass) |
1295 | { | |
c906108c SS |
1296 | case C_FILE: |
1297 | ||
1298 | /* c_value field contains symnum of next .file entry in table | |
581e13c1 | 1299 | or symnum of first global after last .file. */ |
c906108c SS |
1300 | |
1301 | next_file_symnum = cs->c_value; | |
1302 | ||
1303 | /* Complete symbol table for last object file containing | |
581e13c1 | 1304 | debugging information. */ |
c906108c SS |
1305 | |
1306 | /* Whether or not there was a csect in the previous file, we | |
1307 | have to call `end_stabs' and `start_stabs' to reset | |
1308 | type_vector, line_vector, etc. structures. */ | |
1309 | ||
1310 | complete_symtab (filestring, file_start_addr); | |
1311 | cur_src_end_addr = file_end_addr; | |
4d663531 | 1312 | end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1313 | end_stabs (); |
1314 | ||
3e43a32a MS |
1315 | /* XCOFF, according to the AIX 3.2 documentation, puts the |
1316 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
1317 | do things the standard COFF way and put it in the auxent. | |
1318 | We use the auxent if the symbol is ".file" and an auxent | |
1319 | exists, otherwise use the symbol itself. Simple | |
1320 | enough. */ | |
c906108c SS |
1321 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) |
1322 | { | |
1323 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1324 | 0, cs->c_naux, &main_aux); | |
1325 | filestring = coff_getfilename (&main_aux, objfile); | |
1326 | } | |
1327 | else | |
1328 | filestring = cs->c_name; | |
1329 | ||
1330 | start_stabs (); | |
4d663531 | 1331 | start_symtab (objfile, filestring, (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1332 | record_debugformat (debugfmt); |
c906108c SS |
1333 | last_csect_name = 0; |
1334 | ||
581e13c1 | 1335 | /* reset file start and end addresses. A compilation unit |
3e43a32a | 1336 | with no text (only data) should have zero file |
581e13c1 | 1337 | boundaries. */ |
c906108c SS |
1338 | file_start_addr = file_end_addr = 0; |
1339 | break; | |
1340 | ||
1341 | case C_FUN: | |
1342 | fcn_stab_saved = *cs; | |
1343 | break; | |
1344 | ||
1345 | case C_FCN: | |
7ecb6532 | 1346 | if (strcmp (cs->c_name, ".bf") == 0) |
c906108c SS |
1347 | { |
1348 | CORE_ADDR off = ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1349 | SECT_OFF_TEXT (objfile)); |
a109c7c1 | 1350 | |
c906108c SS |
1351 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1352 | 0, cs->c_naux, &main_aux); | |
1353 | ||
1354 | within_function = 1; | |
1355 | ||
fe978cb0 | 1356 | newobj = push_context (0, fcn_start_addr + off); |
c906108c | 1357 | |
fe978cb0 | 1358 | newobj->name = define_symbol |
c906108c SS |
1359 | (fcn_cs_saved.c_value + off, |
1360 | fcn_stab_saved.c_name, 0, 0, objfile); | |
fe978cb0 PA |
1361 | if (newobj->name != NULL) |
1362 | SYMBOL_SECTION (newobj->name) = SECT_OFF_TEXT (objfile); | |
c906108c | 1363 | } |
7ecb6532 | 1364 | else if (strcmp (cs->c_name, ".ef") == 0) |
c906108c | 1365 | { |
c906108c SS |
1366 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1367 | 0, cs->c_naux, &main_aux); | |
1368 | ||
1369 | /* The value of .ef is the address of epilogue code; | |
c5aa993b | 1370 | not useful for gdb. */ |
c906108c | 1371 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
c5aa993b | 1372 | contains number of lines to '}' */ |
c906108c SS |
1373 | |
1374 | if (context_stack_depth <= 0) | |
581e13c1 | 1375 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1376 | ef_complaint (cs->c_symnum); |
c906108c SS |
1377 | within_function = 0; |
1378 | break; | |
1379 | } | |
fe978cb0 | 1380 | newobj = pop_context (); |
c906108c | 1381 | /* Stack must be empty now. */ |
fe978cb0 | 1382 | if (context_stack_depth > 0 || newobj == NULL) |
c906108c | 1383 | { |
23136709 | 1384 | ef_complaint (cs->c_symnum); |
c906108c SS |
1385 | within_function = 0; |
1386 | break; | |
1387 | } | |
1388 | ||
fe978cb0 | 1389 | finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
63e43d3a | 1390 | NULL, newobj->start_addr, |
c906108c SS |
1391 | (fcn_cs_saved.c_value |
1392 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1393 | + ANOFFSET (objfile->section_offsets, | |
4d663531 | 1394 | SECT_OFF_TEXT (objfile)))); |
c906108c SS |
1395 | within_function = 0; |
1396 | } | |
1397 | break; | |
1398 | ||
1399 | case C_BSTAT: | |
1400 | /* Begin static block. */ | |
1401 | { | |
1402 | struct internal_syment symbol; | |
1403 | ||
1404 | read_symbol (&symbol, cs->c_value); | |
1405 | static_block_base = symbol.n_value; | |
1406 | static_block_section = | |
1407 | secnum_to_section (symbol.n_scnum, objfile); | |
1408 | } | |
1409 | break; | |
1410 | ||
1411 | case C_ESTAT: | |
1412 | /* End of static block. */ | |
1413 | static_block_base = 0; | |
1414 | static_block_section = -1; | |
1415 | break; | |
1416 | ||
1417 | case C_ARG: | |
1418 | case C_REGPARM: | |
1419 | case C_REG: | |
1420 | case C_TPDEF: | |
1421 | case C_STRTAG: | |
1422 | case C_UNTAG: | |
1423 | case C_ENTAG: | |
1424 | { | |
3e43a32a MS |
1425 | complaint (&symfile_complaints, |
1426 | _("Unrecognized storage class %d."), | |
23136709 | 1427 | cs->c_sclass); |
c906108c SS |
1428 | } |
1429 | break; | |
1430 | ||
1431 | case C_LABEL: | |
1432 | case C_NULL: | |
1433 | /* Ignore these. */ | |
1434 | break; | |
1435 | ||
1436 | case C_HIDEXT: | |
1437 | case C_STAT: | |
1438 | break; | |
1439 | ||
1440 | case C_BINCL: | |
1441 | /* beginning of include file */ | |
1442 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
581e13c1 MS |
1443 | order. Thus, when wee see them, we might not know enough info |
1444 | to process them. Thus, we'll be saving them into a table | |
1445 | (inclTable) and postpone their processing. */ | |
c906108c SS |
1446 | |
1447 | record_include_begin (cs); | |
1448 | break; | |
1449 | ||
1450 | case C_EINCL: | |
1451 | /* End of include file. */ | |
1452 | /* See the comment after case C_BINCL. */ | |
1453 | record_include_end (cs); | |
1454 | break; | |
1455 | ||
1456 | case C_BLOCK: | |
7ecb6532 | 1457 | if (strcmp (cs->c_name, ".bb") == 0) |
c906108c SS |
1458 | { |
1459 | depth++; | |
fe978cb0 | 1460 | newobj = push_context (depth, |
c906108c SS |
1461 | (cs->c_value |
1462 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1463 | SECT_OFF_TEXT (objfile)))); |
c906108c | 1464 | } |
7ecb6532 | 1465 | else if (strcmp (cs->c_name, ".eb") == 0) |
c906108c SS |
1466 | { |
1467 | if (context_stack_depth <= 0) | |
581e13c1 | 1468 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1469 | eb_complaint (cs->c_symnum); |
c906108c SS |
1470 | break; |
1471 | } | |
fe978cb0 PA |
1472 | newobj = pop_context (); |
1473 | if (depth-- != newobj->depth) | |
c906108c | 1474 | { |
23136709 | 1475 | eb_complaint (cs->c_symnum); |
c906108c SS |
1476 | break; |
1477 | } | |
1478 | if (local_symbols && context_stack_depth > 0) | |
1479 | { | |
1480 | /* Make a block for the local symbols within. */ | |
63e43d3a PMR |
1481 | finish_block (newobj->name, &local_symbols, |
1482 | newobj->old_blocks, NULL, | |
fe978cb0 | 1483 | newobj->start_addr, |
c906108c SS |
1484 | (cs->c_value |
1485 | + ANOFFSET (objfile->section_offsets, | |
4d663531 | 1486 | SECT_OFF_TEXT (objfile)))); |
c906108c | 1487 | } |
fe978cb0 | 1488 | local_symbols = newobj->locals; |
c906108c SS |
1489 | } |
1490 | break; | |
1491 | ||
1492 | default: | |
1493 | process_xcoff_symbol (cs, objfile); | |
1494 | break; | |
1495 | } | |
1496 | } | |
1497 | ||
46212e0b | 1498 | if (get_last_source_file ()) |
c906108c | 1499 | { |
43f3e411 | 1500 | struct compunit_symtab *cust; |
c906108c SS |
1501 | |
1502 | complete_symtab (filestring, file_start_addr); | |
1503 | cur_src_end_addr = file_end_addr; | |
43f3e411 | 1504 | cust = end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c | 1505 | /* When reading symbols for the last C_FILE of the objfile, try |
43f3e411 | 1506 | to make sure that we set pst->compunit_symtab to the symtab for the |
c906108c SS |
1507 | file, not to the _globals_ symtab. I'm not sure whether this |
1508 | actually works right or when/if it comes up. */ | |
43f3e411 DE |
1509 | if (pst->compunit_symtab == NULL) |
1510 | pst->compunit_symtab = cust; | |
c906108c SS |
1511 | end_stabs (); |
1512 | } | |
1513 | } | |
1514 | ||
1515 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
8d749320 | 1516 | (SYMBOL2) = XOBNEW (&objfile->objfile_obstack, struct symbol); \ |
c906108c | 1517 | *(SYMBOL2) = *(SYMBOL1); |
c5aa993b JM |
1518 | |
1519 | ||
c906108c | 1520 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ |
10f0c4bb TT |
1521 | ((ALLOCED) ? (NAME) : obstack_copy0 (&objfile->objfile_obstack, \ |
1522 | (NAME), strlen (NAME))) | |
c906108c SS |
1523 | |
1524 | ||
581e13c1 | 1525 | /* process one xcoff symbol. */ |
c906108c SS |
1526 | |
1527 | static struct symbol * | |
aa1ee363 | 1528 | process_xcoff_symbol (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
1529 | { |
1530 | struct symbol onesymbol; | |
52f0bd74 | 1531 | struct symbol *sym = &onesymbol; |
c906108c SS |
1532 | struct symbol *sym2 = NULL; |
1533 | char *name, *pp; | |
1534 | ||
1535 | int sec; | |
1536 | CORE_ADDR off; | |
1537 | ||
1538 | if (cs->c_secnum < 0) | |
1539 | { | |
1540 | /* The value is a register number, offset within a frame, etc., | |
c5aa993b | 1541 | and does not get relocated. */ |
c906108c SS |
1542 | off = 0; |
1543 | sec = -1; | |
1544 | } | |
1545 | else | |
1546 | { | |
1547 | sec = secnum_to_section (cs->c_secnum, objfile); | |
1548 | off = ANOFFSET (objfile->section_offsets, sec); | |
1549 | } | |
1550 | ||
1551 | name = cs->c_name; | |
1552 | if (name[0] == '.') | |
1553 | ++name; | |
1554 | ||
38bf1463 | 1555 | initialize_objfile_symbol (sym); |
c906108c SS |
1556 | |
1557 | /* default assumptions */ | |
7a78ae4e | 1558 | SYMBOL_VALUE_ADDRESS (sym) = cs->c_value + off; |
176620f1 | 1559 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1560 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); |
1561 | ||
1562 | if (ISFCN (cs->c_type)) | |
1563 | { | |
1564 | /* At this point, we don't know the type of the function. This | |
c5aa993b JM |
1565 | will be patched with the type from its stab entry later on in |
1566 | patch_block_stabs (), unless the file was compiled without -g. */ | |
c906108c | 1567 | |
224c3ddb SM |
1568 | SYMBOL_SET_LINKAGE_NAME (sym, ((const char *) |
1569 | SYMNAME_ALLOC (name, symname_alloced))); | |
46bf5051 | 1570 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_text_symbol; |
c906108c | 1571 | |
f1e6e072 | 1572 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1573 | SYMBOL_DUP (sym, sym2); |
1574 | ||
1575 | if (cs->c_sclass == C_EXT) | |
1576 | add_symbol_to_list (sym2, &global_symbols); | |
1577 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1578 | add_symbol_to_list (sym2, &file_symbols); | |
1579 | } | |
1580 | else | |
1581 | { | |
581e13c1 | 1582 | /* In case we can't figure out the type, provide default. */ |
46bf5051 | 1583 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
1584 | |
1585 | switch (cs->c_sclass) | |
1586 | { | |
1587 | #if 0 | |
c5aa993b JM |
1588 | /* The values of functions and global symbols are now resolved |
1589 | via the global_sym_chain in stabsread.c. */ | |
c906108c SS |
1590 | case C_FUN: |
1591 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1592 | add_stab_to_list (name, &global_stabs); | |
1593 | else | |
1594 | add_stab_to_list (name, &file_stabs); | |
1595 | break; | |
1596 | ||
1597 | case C_GSYM: | |
1598 | add_stab_to_list (name, &global_stabs); | |
1599 | break; | |
1600 | #endif | |
1601 | ||
1602 | case C_BCOMM: | |
1603 | common_block_start (cs->c_name, objfile); | |
1604 | break; | |
1605 | ||
1606 | case C_ECOMM: | |
1607 | common_block_end (objfile); | |
1608 | break; | |
1609 | ||
1610 | default: | |
e2e0b3e5 | 1611 | complaint (&symfile_complaints, _("Unexpected storage class: %d"), |
23136709 | 1612 | cs->c_sclass); |
c906108c SS |
1613 | /* FALLTHROUGH */ |
1614 | ||
1615 | case C_DECL: | |
1616 | case C_PSYM: | |
1617 | case C_RPSYM: | |
1618 | case C_ECOML: | |
1619 | case C_LSYM: | |
1620 | case C_RSYM: | |
1621 | case C_GSYM: | |
1622 | ||
1623 | { | |
1624 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1625 | if (sym != NULL) | |
1626 | { | |
1627 | SYMBOL_SECTION (sym) = sec; | |
1628 | } | |
1629 | return sym; | |
1630 | } | |
1631 | ||
1632 | case C_STSYM: | |
1633 | ||
1634 | /* For xlc (not GCC), the 'V' symbol descriptor is used for | |
1635 | all statics and we need to distinguish file-scope versus | |
1636 | function-scope using within_function. We do this by | |
1637 | changing the string we pass to define_symbol to use 'S' | |
1638 | where we need to, which is not necessarily super-clean, | |
1639 | but seems workable enough. */ | |
1640 | ||
9b13a2db PM |
1641 | if (*name == ':') |
1642 | return NULL; | |
1643 | ||
ed4b0e6a | 1644 | pp = strchr (name, ':'); |
9b13a2db | 1645 | if (pp == NULL) |
c906108c SS |
1646 | return NULL; |
1647 | ||
1648 | ++pp; | |
1649 | if (*pp == 'V' && !within_function) | |
1650 | *pp = 'S'; | |
1651 | sym = define_symbol ((cs->c_value | |
1652 | + ANOFFSET (objfile->section_offsets, | |
1653 | static_block_section)), | |
1654 | cs->c_name, 0, 0, objfile); | |
1655 | if (sym != NULL) | |
1656 | { | |
7a78ae4e | 1657 | SYMBOL_VALUE_ADDRESS (sym) += static_block_base; |
c906108c SS |
1658 | SYMBOL_SECTION (sym) = static_block_section; |
1659 | } | |
1660 | return sym; | |
1661 | ||
1662 | } | |
1663 | } | |
1664 | return sym2; | |
1665 | } | |
1666 | ||
1667 | /* Extract the file name from the aux entry of a C_FILE symbol. | |
1668 | Result is in static storage and is only good for temporary use. */ | |
1669 | ||
1670 | static char * | |
fba45db2 | 1671 | coff_getfilename (union internal_auxent *aux_entry, struct objfile *objfile) |
c906108c SS |
1672 | { |
1673 | static char buffer[BUFSIZ]; | |
1674 | ||
1675 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
b8b98ad1 TT |
1676 | strcpy (buffer, (XCOFF_DATA (objfile)->strtbl |
1677 | + aux_entry->x_file.x_n.x_offset)); | |
c906108c SS |
1678 | else |
1679 | { | |
1680 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1681 | buffer[FILNMLEN] = '\0'; | |
1682 | } | |
1683 | return (buffer); | |
1684 | } | |
1685 | ||
1686 | /* Set *SYMBOL to symbol number symno in symtbl. */ | |
1687 | static void | |
fba45db2 | 1688 | read_symbol (struct internal_syment *symbol, int symno) |
c906108c | 1689 | { |
5c80ed9d | 1690 | struct coff_symfile_info *xcoff = XCOFF_DATA (this_symtab_objfile); |
b8b98ad1 TT |
1691 | int nsyms = xcoff->symtbl_num_syms; |
1692 | char *stbl = xcoff->symtbl; | |
a109c7c1 | 1693 | |
c906108c SS |
1694 | if (symno < 0 || symno >= nsyms) |
1695 | { | |
e2e0b3e5 | 1696 | complaint (&symfile_complaints, _("Invalid symbol offset")); |
c906108c SS |
1697 | symbol->n_value = 0; |
1698 | symbol->n_scnum = -1; | |
1699 | return; | |
1700 | } | |
5c80ed9d | 1701 | bfd_coff_swap_sym_in (this_symtab_objfile->obfd, |
c5aa993b | 1702 | stbl + (symno * local_symesz), |
c906108c SS |
1703 | symbol); |
1704 | } | |
c5aa993b | 1705 | |
c906108c SS |
1706 | /* Get value corresponding to symbol number symno in symtbl. */ |
1707 | ||
470d5666 | 1708 | static CORE_ADDR |
fba45db2 | 1709 | read_symbol_nvalue (int symno) |
c906108c SS |
1710 | { |
1711 | struct internal_syment symbol[1]; | |
1712 | ||
1713 | read_symbol (symbol, symno); | |
c5aa993b | 1714 | return symbol->n_value; |
c906108c SS |
1715 | } |
1716 | ||
1717 | ||
1718 | /* Find the address of the function corresponding to symno, where | |
1719 | symno is the symbol pointed to by the linetable. */ | |
1720 | ||
1721 | static int | |
fba45db2 | 1722 | read_symbol_lineno (int symno) |
c906108c | 1723 | { |
5c80ed9d | 1724 | struct objfile *objfile = this_symtab_objfile; |
7af35dad | 1725 | int xcoff64 = bfd_xcoff_is_xcoff64 (objfile->obfd); |
7a78ae4e | 1726 | |
b8b98ad1 | 1727 | struct coff_symfile_info *info = XCOFF_DATA (objfile); |
7a78ae4e ND |
1728 | int nsyms = info->symtbl_num_syms; |
1729 | char *stbl = info->symtbl; | |
1730 | char *strtbl = info->strtbl; | |
1731 | ||
c906108c SS |
1732 | struct internal_syment symbol[1]; |
1733 | union internal_auxent main_aux[1]; | |
1734 | ||
1735 | if (symno < 0) | |
1736 | { | |
23136709 | 1737 | bf_notfound_complaint (); |
c906108c SS |
1738 | return 0; |
1739 | } | |
1740 | ||
1741 | /* Note that just searching for a short distance (e.g. 50 symbols) | |
1742 | is not enough, at least in the following case. | |
1743 | ||
1744 | .extern foo | |
1745 | [many .stabx entries] | |
1746 | [a few functions, referring to foo] | |
1747 | .globl foo | |
1748 | .bf | |
1749 | ||
1750 | What happens here is that the assembler moves the .stabx entries | |
1751 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1752 | all the stabx entries. See PR gdb/2222. */ | |
1753 | ||
1754 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1755 | If I understand things correctly it would need to be done only for | |
1756 | the duration of a single psymtab to symtab conversion. */ | |
1757 | while (symno < nsyms) | |
1758 | { | |
1759 | bfd_coff_swap_sym_in (symfile_bfd, | |
1760 | stbl + (symno * local_symesz), symbol); | |
7a78ae4e ND |
1761 | if (symbol->n_sclass == C_FCN) |
1762 | { | |
1763 | char *name = xcoff64 ? strtbl + symbol->n_offset : symbol->n_name; | |
a109c7c1 | 1764 | |
7ecb6532 | 1765 | if (strcmp (name, ".bf") == 0) |
7a78ae4e ND |
1766 | goto gotit; |
1767 | } | |
c906108c SS |
1768 | symno += symbol->n_numaux + 1; |
1769 | } | |
1770 | ||
23136709 | 1771 | bf_notfound_complaint (); |
c906108c SS |
1772 | return 0; |
1773 | ||
1774 | gotit: | |
581e13c1 | 1775 | /* Take aux entry and return its lineno. */ |
c906108c | 1776 | symno++; |
7a78ae4e | 1777 | bfd_coff_swap_aux_in (objfile->obfd, stbl + symno * local_symesz, |
c906108c SS |
1778 | symbol->n_type, symbol->n_sclass, |
1779 | 0, symbol->n_numaux, main_aux); | |
1780 | ||
1781 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1782 | } | |
1783 | ||
581e13c1 | 1784 | /* Support for line number handling. */ |
c906108c SS |
1785 | |
1786 | /* This function is called for every section; it finds the outer limits | |
1787 | * of the line table (minimum and maximum file offset) so that the | |
1788 | * mainline code can read the whole thing for efficiency. | |
1789 | */ | |
1790 | static void | |
7be0c536 | 1791 | find_linenos (struct bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
1792 | { |
1793 | struct coff_symfile_info *info; | |
1794 | int size, count; | |
1795 | file_ptr offset, maxoff; | |
1796 | ||
1797 | count = asect->lineno_count; | |
1798 | ||
7ecb6532 | 1799 | if (strcmp (asect->name, ".text") != 0 || count == 0) |
c906108c SS |
1800 | return; |
1801 | ||
1802 | size = count * coff_data (abfd)->local_linesz; | |
c5aa993b | 1803 | info = (struct coff_symfile_info *) vpinfo; |
c906108c SS |
1804 | offset = asect->line_filepos; |
1805 | maxoff = offset + size; | |
1806 | ||
1807 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1808 | info->min_lineno_offset = offset; | |
1809 | ||
1810 | if (maxoff > info->max_lineno_offset) | |
1811 | info->max_lineno_offset = maxoff; | |
1812 | } | |
1813 | \f | |
c906108c | 1814 | static void |
5c80ed9d | 1815 | xcoff_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst) |
c906108c SS |
1816 | { |
1817 | struct cleanup *old_chain; | |
1818 | int i; | |
c5aa993b | 1819 | |
c906108c SS |
1820 | if (!pst) |
1821 | return; | |
1822 | ||
1823 | if (pst->readin) | |
1824 | { | |
1825 | fprintf_unfiltered | |
1826 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1827 | pst->filename); | |
1828 | return; | |
1829 | } | |
1830 | ||
581e13c1 | 1831 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
1832 | for (i = 0; i < pst->number_of_dependencies; i++) |
1833 | if (!pst->dependencies[i]->readin) | |
1834 | { | |
1835 | /* Inform about additional files that need to be read in. */ | |
1836 | if (info_verbose) | |
1837 | { | |
1838 | fputs_filtered (" ", gdb_stdout); | |
1839 | wrap_here (""); | |
1840 | fputs_filtered ("and ", gdb_stdout); | |
1841 | wrap_here (""); | |
1842 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1843 | wrap_here (""); /* Flush output */ |
c906108c SS |
1844 | gdb_flush (gdb_stdout); |
1845 | } | |
5c80ed9d | 1846 | xcoff_psymtab_to_symtab_1 (objfile, pst->dependencies[i]); |
c906108c SS |
1847 | } |
1848 | ||
c5aa993b | 1849 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0) |
c906108c SS |
1850 | { |
1851 | /* Init stuff necessary for reading in symbols. */ | |
1852 | stabsread_init (); | |
1853 | buildsym_init (); | |
a0b3c4fd | 1854 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c | 1855 | |
5c80ed9d | 1856 | read_xcoff_symtab (objfile, pst); |
c906108c SS |
1857 | |
1858 | do_cleanups (old_chain); | |
1859 | } | |
1860 | ||
1861 | pst->readin = 1; | |
1862 | } | |
1863 | ||
c906108c | 1864 | /* Read in all of the symbols for a given psymtab for real. |
257e7a09 | 1865 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
1866 | |
1867 | static void | |
257e7a09 | 1868 | xcoff_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 1869 | { |
257e7a09 | 1870 | if (self->readin) |
c906108c SS |
1871 | { |
1872 | fprintf_unfiltered | |
1873 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
257e7a09 | 1874 | self->filename); |
c906108c SS |
1875 | return; |
1876 | } | |
1877 | ||
257e7a09 YQ |
1878 | if (((struct symloc *) self->read_symtab_private)->numsyms != 0 |
1879 | || self->number_of_dependencies) | |
c906108c SS |
1880 | { |
1881 | /* Print the message now, before reading the string table, | |
c5aa993b | 1882 | to avoid disconcerting pauses. */ |
c906108c SS |
1883 | if (info_verbose) |
1884 | { | |
257e7a09 | 1885 | printf_filtered ("Reading in symbols for %s...", self->filename); |
c906108c SS |
1886 | gdb_flush (gdb_stdout); |
1887 | } | |
1888 | ||
c906108c SS |
1889 | next_symbol_text_func = xcoff_next_symbol_text; |
1890 | ||
257e7a09 | 1891 | xcoff_psymtab_to_symtab_1 (objfile, self); |
c906108c SS |
1892 | |
1893 | /* Match with global symbols. This only needs to be done once, | |
1894 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 1895 | scan_file_globals (objfile); |
c906108c SS |
1896 | |
1897 | /* Finish up the debug error message. */ | |
1898 | if (info_verbose) | |
1899 | printf_filtered ("done.\n"); | |
1900 | } | |
1901 | } | |
1902 | \f | |
1903 | static void | |
fba45db2 | 1904 | xcoff_new_init (struct objfile *objfile) |
c906108c SS |
1905 | { |
1906 | stabsread_new_init (); | |
1907 | buildsym_new_init (); | |
1908 | } | |
1909 | ||
1910 | /* Do initialization in preparation for reading symbols from OBJFILE. | |
c5aa993b | 1911 | |
c906108c SS |
1912 | We will only be called if this is an XCOFF or XCOFF-like file. |
1913 | BFD handles figuring out the format of the file, and code in symfile.c | |
1914 | uses BFD's determination to vector to us. */ | |
1915 | ||
1916 | static void | |
fba45db2 | 1917 | xcoff_symfile_init (struct objfile *objfile) |
c906108c | 1918 | { |
b8b98ad1 TT |
1919 | struct coff_symfile_info *xcoff; |
1920 | ||
581e13c1 | 1921 | /* Allocate struct to keep track of the symfile. */ |
b8b98ad1 TT |
1922 | xcoff = XNEW (struct coff_symfile_info); |
1923 | set_objfile_data (objfile, xcoff_objfile_data_key, xcoff); | |
c906108c SS |
1924 | |
1925 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1926 | find this causes a significant slowdown in gdb then we could | |
1927 | set it in the debug symbol readers only when necessary. */ | |
1928 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
1929 | } |
1930 | ||
1931 | /* Perform any local cleanups required when we are done with a particular | |
1932 | objfile. I.E, we are in the process of discarding all symbol information | |
1933 | for an objfile, freeing up all memory held for it, and unlinking the | |
581e13c1 | 1934 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
1935 | |
1936 | static void | |
fba45db2 | 1937 | xcoff_symfile_finish (struct objfile *objfile) |
c906108c | 1938 | { |
c906108c SS |
1939 | /* Start with a fresh include table for the next objfile. */ |
1940 | if (inclTable) | |
1941 | { | |
b8c9b27d | 1942 | xfree (inclTable); |
c906108c SS |
1943 | inclTable = NULL; |
1944 | } | |
1945 | inclIndx = inclLength = inclDepth = 0; | |
316a8b21 TG |
1946 | |
1947 | dwarf2_free_objfile (objfile); | |
c906108c SS |
1948 | } |
1949 | ||
1950 | ||
1951 | static void | |
fba45db2 | 1952 | init_stringtab (bfd *abfd, file_ptr offset, struct objfile *objfile) |
c906108c SS |
1953 | { |
1954 | long length; | |
1955 | int val; | |
1956 | unsigned char lengthbuf[4]; | |
1957 | char *strtbl; | |
b8b98ad1 | 1958 | struct coff_symfile_info *xcoff = XCOFF_DATA (objfile); |
c906108c | 1959 | |
b8b98ad1 | 1960 | xcoff->strtbl = NULL; |
c906108c SS |
1961 | |
1962 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) | |
8a3fe4f8 | 1963 | error (_("cannot seek to string table in %s: %s"), |
c906108c SS |
1964 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1965 | ||
3a42e9d0 | 1966 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c SS |
1967 | length = bfd_h_get_32 (abfd, lengthbuf); |
1968 | ||
1969 | /* If no string table is needed, then the file may end immediately | |
1970 | after the symbols. Just return with `strtbl' set to NULL. */ | |
1971 | ||
1972 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1973 | return; | |
1974 | ||
581e13c1 MS |
1975 | /* Allocate string table from objfile_obstack. We will need this table |
1976 | as long as we have its symbol table around. */ | |
c906108c | 1977 | |
4a146b47 | 1978 | strtbl = (char *) obstack_alloc (&objfile->objfile_obstack, length); |
b8b98ad1 | 1979 | xcoff->strtbl = strtbl; |
c906108c SS |
1980 | |
1981 | /* Copy length buffer, the first byte is usually zero and is | |
1982 | used for stabs with a name length of zero. */ | |
1983 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
1984 | if (length == sizeof lengthbuf) | |
1985 | return; | |
1986 | ||
3a42e9d0 | 1987 | val = bfd_bread (strtbl + sizeof lengthbuf, length - sizeof lengthbuf, abfd); |
c906108c SS |
1988 | |
1989 | if (val != length - sizeof lengthbuf) | |
8a3fe4f8 | 1990 | error (_("cannot read string table from %s: %s"), |
c906108c SS |
1991 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1992 | if (strtbl[length - 1] != '\0') | |
3e43a32a MS |
1993 | error (_("bad symbol file: string table " |
1994 | "does not end with null character")); | |
c906108c SS |
1995 | |
1996 | return; | |
1997 | } | |
1998 | \f | |
1999 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
2000 | have seen one, it is the offset in the line numbers of the line numbers | |
2001 | for the psymtab. */ | |
2002 | static unsigned int first_fun_line_offset; | |
2003 | ||
c906108c SS |
2004 | /* Allocate and partially fill a partial symtab. It will be |
2005 | completely filled at the end of the symbol list. | |
2006 | ||
2007 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2008 | is the address relative to which its symbols are (incremental) or 0 | |
581e13c1 | 2009 | (normal). */ |
c906108c SS |
2010 | |
2011 | static struct partial_symtab * | |
0d5cff50 DE |
2012 | xcoff_start_psymtab (struct objfile *objfile, |
2013 | const char *filename, int first_symnum, | |
fba45db2 KB |
2014 | struct partial_symbol **global_syms, |
2015 | struct partial_symbol **static_syms) | |
c906108c SS |
2016 | { |
2017 | struct partial_symtab *result = | |
18a94d75 | 2018 | start_psymtab_common (objfile, |
a109c7c1 MS |
2019 | filename, |
2020 | /* We fill in textlow later. */ | |
2021 | 0, | |
2022 | global_syms, static_syms); | |
c906108c | 2023 | |
8d749320 SM |
2024 | result->read_symtab_private = |
2025 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 2026 | ((struct symloc *) result->read_symtab_private)->first_symnum = first_symnum; |
257e7a09 | 2027 | result->read_symtab = xcoff_read_symtab; |
c906108c | 2028 | |
581e13c1 | 2029 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
2030 | psymtab_language = deduce_language_from_filename (filename); |
2031 | ||
2032 | return result; | |
2033 | } | |
2034 | ||
581e13c1 | 2035 | /* Close off the current usage of PST. |
c906108c SS |
2036 | Returns PST, or NULL if the partial symtab was empty and thrown away. |
2037 | ||
2038 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). | |
2039 | ||
2040 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES | |
2041 | are the information for includes and dependencies. */ | |
2042 | ||
2043 | static struct partial_symtab * | |
5c80ed9d TT |
2044 | xcoff_end_psymtab (struct objfile *objfile, struct partial_symtab *pst, |
2045 | const char **include_list, int num_includes, | |
2046 | int capping_symbol_number, | |
fba45db2 KB |
2047 | struct partial_symtab **dependency_list, |
2048 | int number_dependencies, int textlow_not_set) | |
c906108c SS |
2049 | { |
2050 | int i; | |
c906108c SS |
2051 | |
2052 | if (capping_symbol_number != -1) | |
c5aa993b | 2053 | ((struct symloc *) pst->read_symtab_private)->numsyms = |
c906108c | 2054 | capping_symbol_number |
c5aa993b JM |
2055 | - ((struct symloc *) pst->read_symtab_private)->first_symnum; |
2056 | ((struct symloc *) pst->read_symtab_private)->lineno_off = | |
c906108c SS |
2057 | first_fun_line_offset; |
2058 | first_fun_line_offset = 0; | |
8763cede DE |
2059 | |
2060 | end_psymtab_common (objfile, pst); | |
c906108c SS |
2061 | |
2062 | pst->number_of_dependencies = number_dependencies; | |
2063 | if (number_dependencies) | |
2064 | { | |
8d749320 SM |
2065 | pst->dependencies = XOBNEWVEC (&objfile->objfile_obstack, |
2066 | struct partial_symtab *, | |
2067 | number_dependencies); | |
c906108c | 2068 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2069 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2070 | } |
2071 | else | |
2072 | pst->dependencies = 0; | |
2073 | ||
2074 | for (i = 0; i < num_includes; i++) | |
2075 | { | |
2076 | struct partial_symtab *subpst = | |
a109c7c1 | 2077 | allocate_psymtab (include_list[i], objfile); |
c906108c | 2078 | |
e38df1d0 TT |
2079 | subpst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2080 | sizeof (struct symloc)); | |
c5aa993b JM |
2081 | ((struct symloc *) subpst->read_symtab_private)->first_symnum = 0; |
2082 | ((struct symloc *) subpst->read_symtab_private)->numsyms = 0; | |
c906108c SS |
2083 | subpst->textlow = 0; |
2084 | subpst->texthigh = 0; | |
2085 | ||
2086 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2087 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 SM |
2088 | subpst->dependencies = |
2089 | XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
c906108c SS |
2090 | subpst->dependencies[0] = pst; |
2091 | subpst->number_of_dependencies = 1; | |
2092 | ||
2093 | subpst->globals_offset = | |
2094 | subpst->n_global_syms = | |
c5aa993b JM |
2095 | subpst->statics_offset = |
2096 | subpst->n_static_syms = 0; | |
c906108c SS |
2097 | |
2098 | subpst->readin = 0; | |
43f3e411 | 2099 | subpst->compunit_symtab = NULL; |
c906108c SS |
2100 | subpst->read_symtab = pst->read_symtab; |
2101 | } | |
2102 | ||
c906108c SS |
2103 | if (num_includes == 0 |
2104 | && number_dependencies == 0 | |
2105 | && pst->n_global_syms == 0 | |
2106 | && pst->n_static_syms == 0) | |
2107 | { | |
2108 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2109 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2110 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b | 2111 | any symbols in them. There can be a lot of them. */ |
c906108c | 2112 | |
5c80ed9d | 2113 | discard_psymtab (objfile, pst); |
c906108c SS |
2114 | |
2115 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2116 | pst = NULL; |
c906108c SS |
2117 | } |
2118 | return pst; | |
2119 | } | |
2120 | ||
c906108c SS |
2121 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in |
2122 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2123 | the symbol and its auxents. */ | |
2124 | ||
2125 | static void | |
fba45db2 | 2126 | swap_sym (struct internal_syment *symbol, union internal_auxent *aux, |
0d5cff50 | 2127 | const char **name, char **raw, unsigned int *symnump, |
fba45db2 | 2128 | struct objfile *objfile) |
c906108c SS |
2129 | { |
2130 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2131 | if (symbol->n_zeroes) | |
2132 | { | |
2133 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
c5aa993b | 2134 | '\0'-terminated. */ |
c906108c SS |
2135 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') |
2136 | { | |
2137 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2138 | into the minimal symbols. */ | |
2139 | char *p; | |
a109c7c1 | 2140 | |
224c3ddb SM |
2141 | p = (char *) obstack_alloc (&objfile->objfile_obstack, |
2142 | E_SYMNMLEN + 1); | |
c906108c SS |
2143 | strncpy (p, symbol->n_name, E_SYMNMLEN); |
2144 | p[E_SYMNMLEN] = '\0'; | |
2145 | *name = p; | |
2146 | } | |
2147 | else | |
2148 | /* Point to the unswapped name as that persists as long as the | |
2149 | objfile does. */ | |
c5aa993b | 2150 | *name = ((struct external_syment *) *raw)->e.e_name; |
c906108c SS |
2151 | } |
2152 | else if (symbol->n_sclass & 0x80) | |
2153 | { | |
b8b98ad1 | 2154 | *name = XCOFF_DATA (objfile)->debugsec + symbol->n_offset; |
c906108c SS |
2155 | } |
2156 | else | |
2157 | { | |
b8b98ad1 | 2158 | *name = XCOFF_DATA (objfile)->strtbl + symbol->n_offset; |
c906108c SS |
2159 | } |
2160 | ++*symnump; | |
2161 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2162 | if (symbol->n_numaux > 0) | |
2163 | { | |
2164 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2165 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2166 | ||
2167 | *symnump += symbol->n_numaux; | |
2168 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2169 | } | |
2170 | } | |
2171 | ||
23136709 KB |
2172 | static void |
2173 | function_outside_compilation_unit_complaint (const char *arg1) | |
2174 | { | |
2175 | complaint (&symfile_complaints, | |
3e43a32a MS |
2176 | _("function `%s' appears to be defined " |
2177 | "outside of all compilation units"), | |
23136709 KB |
2178 | arg1); |
2179 | } | |
2180 | ||
c906108c | 2181 | static void |
fba45db2 | 2182 | scan_xcoff_symtab (struct objfile *objfile) |
c906108c | 2183 | { |
40c58d95 | 2184 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
581e13c1 | 2185 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
0d5cff50 | 2186 | const char *filestring = NULL; |
c906108c | 2187 | |
0d5cff50 | 2188 | const char *namestring; |
c906108c SS |
2189 | int past_first_source_file = 0; |
2190 | bfd *abfd; | |
2191 | asection *bfd_sect; | |
2192 | unsigned int nsyms; | |
2193 | ||
2194 | /* Current partial symtab */ | |
2195 | struct partial_symtab *pst; | |
2196 | ||
581e13c1 | 2197 | /* List of current psymtab's include files. */ |
0d5cff50 | 2198 | const char **psymtab_include_list; |
c906108c SS |
2199 | int includes_allocated; |
2200 | int includes_used; | |
2201 | ||
581e13c1 | 2202 | /* Index within current psymtab dependency list. */ |
c906108c SS |
2203 | struct partial_symtab **dependency_list; |
2204 | int dependencies_used, dependencies_allocated; | |
2205 | ||
2206 | char *sraw_symbol; | |
2207 | struct internal_syment symbol; | |
96baa820 | 2208 | union internal_auxent main_aux[5]; |
c906108c SS |
2209 | unsigned int ssymnum; |
2210 | ||
0d5cff50 | 2211 | const char *last_csect_name = NULL; /* Last seen csect's name and value. */ |
c906108c SS |
2212 | CORE_ADDR last_csect_val = 0; |
2213 | int last_csect_sec = 0; | |
581e13c1 | 2214 | int misc_func_recorded = 0; /* true if any misc. function. */ |
c906108c SS |
2215 | int textlow_not_set = 1; |
2216 | ||
2217 | pst = (struct partial_symtab *) 0; | |
2218 | ||
2219 | includes_allocated = 30; | |
2220 | includes_used = 0; | |
0d5cff50 DE |
2221 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2222 | sizeof (const char *)); | |
c906108c SS |
2223 | |
2224 | dependencies_allocated = 30; | |
2225 | dependencies_used = 0; | |
2226 | dependency_list = | |
2227 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2228 | sizeof (struct partial_symtab *)); | |
2229 | ||
46212e0b | 2230 | set_last_source_file (NULL); |
c906108c SS |
2231 | |
2232 | abfd = objfile->obfd; | |
13c763f4 | 2233 | next_symbol_text_func = xcoff_next_symbol_text; |
c906108c | 2234 | |
b8b98ad1 TT |
2235 | sraw_symbol = XCOFF_DATA (objfile)->symtbl; |
2236 | nsyms = XCOFF_DATA (objfile)->symtbl_num_syms; | |
c906108c SS |
2237 | ssymnum = 0; |
2238 | while (ssymnum < nsyms) | |
2239 | { | |
7a78ae4e | 2240 | int sclass; |
c906108c SS |
2241 | |
2242 | QUIT; | |
2243 | ||
7a78ae4e ND |
2244 | bfd_coff_swap_sym_in (abfd, sraw_symbol, &symbol); |
2245 | sclass = symbol.n_sclass; | |
2246 | ||
c906108c SS |
2247 | switch (sclass) |
2248 | { | |
2249 | case C_EXT: | |
2250 | case C_HIDEXT: | |
2251 | { | |
2252 | /* The CSECT auxent--always the last auxent. */ | |
2253 | union internal_auxent csect_aux; | |
2254 | unsigned int symnum_before = ssymnum; | |
2255 | ||
96baa820 | 2256 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2257 | &ssymnum, objfile); |
2258 | if (symbol.n_numaux > 1) | |
2259 | { | |
2260 | bfd_coff_swap_aux_in | |
2261 | (objfile->obfd, | |
c5aa993b | 2262 | sraw_symbol - coff_data (abfd)->local_symesz, |
c906108c SS |
2263 | symbol.n_type, |
2264 | symbol.n_sclass, | |
2265 | symbol.n_numaux - 1, | |
2266 | symbol.n_numaux, | |
2267 | &csect_aux); | |
2268 | } | |
2269 | else | |
96baa820 | 2270 | csect_aux = main_aux[0]; |
c906108c | 2271 | |
977adac5 ND |
2272 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2273 | if (namestring[0] == '$' | |
c906108c SS |
2274 | || (namestring[0] == '.' && namestring[1] == '$')) |
2275 | break; | |
2276 | ||
2277 | switch (csect_aux.x_csect.x_smtyp & 0x7) | |
2278 | { | |
2279 | case XTY_SD: | |
2280 | switch (csect_aux.x_csect.x_smclas) | |
2281 | { | |
2282 | case XMC_PR: | |
2283 | if (last_csect_name) | |
2284 | { | |
2285 | /* If no misc. function recorded in the last | |
581e13c1 | 2286 | seen csect, enter it as a function. This |
c906108c SS |
2287 | will take care of functions like strcmp() |
2288 | compiled by xlc. */ | |
2289 | ||
2290 | if (!misc_func_recorded) | |
2291 | { | |
ec92004f | 2292 | record_minimal_symbol |
c906108c | 2293 | (last_csect_name, last_csect_val, |
ec92004f JB |
2294 | mst_text, last_csect_sec, objfile); |
2295 | misc_func_recorded = 1; | |
c906108c SS |
2296 | } |
2297 | ||
2298 | if (pst != NULL) | |
2299 | { | |
2300 | /* We have to allocate one psymtab for | |
2301 | each program csect, because their text | |
2302 | sections need not be adjacent. */ | |
2303 | xcoff_end_psymtab | |
5c80ed9d TT |
2304 | (objfile, pst, psymtab_include_list, |
2305 | includes_used, symnum_before, dependency_list, | |
c906108c SS |
2306 | dependencies_used, textlow_not_set); |
2307 | includes_used = 0; | |
2308 | dependencies_used = 0; | |
2309 | /* Give all psymtabs for this source file the same | |
2310 | name. */ | |
2311 | pst = xcoff_start_psymtab | |
d4f3574e | 2312 | (objfile, |
c906108c SS |
2313 | filestring, |
2314 | symnum_before, | |
2315 | objfile->global_psymbols.next, | |
2316 | objfile->static_psymbols.next); | |
2317 | } | |
2318 | } | |
977adac5 ND |
2319 | /* Activate the misc_func_recorded mechanism for |
2320 | compiler- and linker-generated CSECTs like ".strcmp" | |
2321 | and "@FIX1". */ | |
2322 | if (namestring && (namestring[0] == '.' | |
2323 | || namestring[0] == '@')) | |
c906108c SS |
2324 | { |
2325 | last_csect_name = namestring; | |
2326 | last_csect_val = symbol.n_value; | |
ec92004f | 2327 | last_csect_sec = symbol.n_scnum; |
c906108c SS |
2328 | } |
2329 | if (pst != NULL) | |
2330 | { | |
2331 | CORE_ADDR highval = | |
a109c7c1 MS |
2332 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; |
2333 | ||
c906108c SS |
2334 | if (highval > pst->texthigh) |
2335 | pst->texthigh = highval; | |
2336 | if (pst->textlow == 0 || symbol.n_value < pst->textlow) | |
2337 | pst->textlow = symbol.n_value; | |
2338 | } | |
2339 | misc_func_recorded = 0; | |
2340 | break; | |
2341 | ||
2342 | case XMC_RW: | |
6904b546 | 2343 | case XMC_TD: |
c906108c SS |
2344 | /* Data variables are recorded in the minimal symbol |
2345 | table, except for section symbols. */ | |
2346 | if (*namestring != '.') | |
4d1eb6b4 | 2347 | record_minimal_symbol |
c906108c SS |
2348 | (namestring, symbol.n_value, |
2349 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
4d1eb6b4 | 2350 | symbol.n_scnum, objfile); |
c906108c SS |
2351 | break; |
2352 | ||
2353 | case XMC_TC0: | |
2354 | if (toc_offset) | |
8a3fe4f8 | 2355 | warning (_("More than one XMC_TC0 symbol found.")); |
c906108c SS |
2356 | toc_offset = symbol.n_value; |
2357 | ||
3e43a32a MS |
2358 | /* Make TOC offset relative to start address of |
2359 | section. */ | |
c906108c SS |
2360 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); |
2361 | if (bfd_sect) | |
2362 | toc_offset -= bfd_section_vma (objfile->obfd, bfd_sect); | |
2363 | break; | |
2364 | ||
2365 | case XMC_TC: | |
2366 | /* These symbols tell us where the TOC entry for a | |
2367 | variable is, not the variable itself. */ | |
2368 | break; | |
2369 | ||
2370 | default: | |
2371 | break; | |
2372 | } | |
2373 | break; | |
2374 | ||
2375 | case XTY_LD: | |
2376 | switch (csect_aux.x_csect.x_smclas) | |
2377 | { | |
2378 | case XMC_PR: | |
2379 | /* A function entry point. */ | |
2380 | ||
2381 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2382 | first_fun_line_offset = | |
96baa820 | 2383 | main_aux[0].x_sym.x_fcnary.x_fcn.x_lnnoptr; |
ec92004f JB |
2384 | { |
2385 | record_minimal_symbol | |
2386 | (namestring, symbol.n_value, | |
2387 | sclass == C_HIDEXT ? mst_file_text : mst_text, | |
2388 | symbol.n_scnum, objfile); | |
2389 | misc_func_recorded = 1; | |
2390 | } | |
c906108c SS |
2391 | break; |
2392 | ||
2393 | case XMC_GL: | |
2394 | /* shared library function trampoline code entry | |
581e13c1 | 2395 | point. */ |
c906108c SS |
2396 | |
2397 | /* record trampoline code entries as | |
2398 | mst_solib_trampoline symbol. When we lookup mst | |
2399 | symbols, we will choose mst_text over | |
581e13c1 | 2400 | mst_solib_trampoline. */ |
ec92004f | 2401 | record_minimal_symbol |
c906108c | 2402 | (namestring, symbol.n_value, |
ec92004f JB |
2403 | mst_solib_trampoline, symbol.n_scnum, objfile); |
2404 | misc_func_recorded = 1; | |
c906108c SS |
2405 | break; |
2406 | ||
2407 | case XMC_DS: | |
2408 | /* The symbols often have the same names as | |
2409 | debug symbols for functions, and confuse | |
2410 | lookup_symbol. */ | |
2411 | break; | |
2412 | ||
2413 | default: | |
2414 | ||
2415 | /* xlc puts each variable in a separate csect, | |
2416 | so we get an XTY_SD for each variable. But | |
2417 | gcc puts several variables in a csect, so | |
2418 | that each variable only gets an XTY_LD. We | |
2419 | still need to record them. This will | |
2420 | typically be XMC_RW; I suspect XMC_RO and | |
2421 | XMC_BS might be possible too. */ | |
2422 | if (*namestring != '.') | |
4d1eb6b4 | 2423 | record_minimal_symbol |
c906108c SS |
2424 | (namestring, symbol.n_value, |
2425 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
4d1eb6b4 | 2426 | symbol.n_scnum, objfile); |
c906108c SS |
2427 | break; |
2428 | } | |
2429 | break; | |
2430 | ||
2431 | case XTY_CM: | |
2432 | switch (csect_aux.x_csect.x_smclas) | |
2433 | { | |
2434 | case XMC_RW: | |
2435 | case XMC_BS: | |
2436 | /* Common variables are recorded in the minimal symbol | |
2437 | table, except for section symbols. */ | |
2438 | if (*namestring != '.') | |
4d1eb6b4 | 2439 | record_minimal_symbol |
c906108c SS |
2440 | (namestring, symbol.n_value, |
2441 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, | |
4d1eb6b4 | 2442 | symbol.n_scnum, objfile); |
c906108c SS |
2443 | break; |
2444 | } | |
2445 | break; | |
2446 | ||
2447 | default: | |
2448 | break; | |
2449 | } | |
2450 | } | |
2451 | break; | |
2452 | case C_FILE: | |
2453 | { | |
2454 | unsigned int symnum_before; | |
2455 | ||
2456 | symnum_before = ssymnum; | |
96baa820 | 2457 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2458 | &ssymnum, objfile); |
2459 | ||
2460 | /* See if the last csect needs to be recorded. */ | |
2461 | ||
2462 | if (last_csect_name && !misc_func_recorded) | |
2463 | { | |
c906108c SS |
2464 | /* If no misc. function recorded in the last seen csect, enter |
2465 | it as a function. This will take care of functions like | |
2466 | strcmp() compiled by xlc. */ | |
2467 | ||
ec92004f JB |
2468 | record_minimal_symbol (last_csect_name, last_csect_val, |
2469 | mst_text, last_csect_sec, objfile); | |
2470 | misc_func_recorded = 1; | |
c906108c SS |
2471 | } |
2472 | ||
2473 | if (pst) | |
2474 | { | |
5c80ed9d TT |
2475 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, |
2476 | includes_used, symnum_before, | |
2477 | dependency_list, dependencies_used, | |
2478 | textlow_not_set); | |
c906108c SS |
2479 | includes_used = 0; |
2480 | dependencies_used = 0; | |
2481 | } | |
2482 | first_fun_line_offset = 0; | |
2483 | ||
2484 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2485 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2486 | do things the standard COFF way and put it in the auxent. | |
2487 | We use the auxent if the symbol is ".file" and an auxent | |
2488 | exists, otherwise use the symbol itself. */ | |
2489 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2490 | { | |
96baa820 | 2491 | filestring = coff_getfilename (&main_aux[0], objfile); |
c906108c SS |
2492 | } |
2493 | else | |
2494 | filestring = namestring; | |
2495 | ||
d4f3574e | 2496 | pst = xcoff_start_psymtab (objfile, |
c906108c SS |
2497 | filestring, |
2498 | symnum_before, | |
2499 | objfile->global_psymbols.next, | |
2500 | objfile->static_psymbols.next); | |
2501 | last_csect_name = NULL; | |
2502 | } | |
2503 | break; | |
2504 | ||
2505 | default: | |
2506 | { | |
23136709 | 2507 | complaint (&symfile_complaints, |
3e43a32a MS |
2508 | _("Storage class %d not recognized during scan"), |
2509 | sclass); | |
c906108c SS |
2510 | } |
2511 | /* FALLTHROUGH */ | |
2512 | ||
2513 | /* C_FCN is .bf and .ef symbols. I think it is sufficient | |
2514 | to handle only the C_FUN and C_EXT. */ | |
2515 | case C_FCN: | |
2516 | ||
2517 | case C_BSTAT: | |
2518 | case C_ESTAT: | |
2519 | case C_ARG: | |
2520 | case C_REGPARM: | |
2521 | case C_REG: | |
2522 | case C_TPDEF: | |
2523 | case C_STRTAG: | |
2524 | case C_UNTAG: | |
2525 | case C_ENTAG: | |
2526 | case C_LABEL: | |
2527 | case C_NULL: | |
2528 | ||
2529 | /* C_EINCL means we are switching back to the main file. But there | |
2530 | is no reason to care; the only thing we want to know about | |
2531 | includes is the names of all the included (.h) files. */ | |
2532 | case C_EINCL: | |
2533 | ||
2534 | case C_BLOCK: | |
2535 | ||
2536 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2537 | used instead. */ | |
2538 | case C_STAT: | |
2539 | ||
2540 | /* I don't think the name of the common block (as opposed to the | |
2541 | variables within it) is something which is user visible | |
2542 | currently. */ | |
2543 | case C_BCOMM: | |
2544 | case C_ECOMM: | |
2545 | ||
2546 | case C_PSYM: | |
2547 | case C_RPSYM: | |
2548 | ||
2549 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2550 | so C_LSYM would appear to be only for locals. */ | |
2551 | case C_LSYM: | |
2552 | ||
2553 | case C_AUTO: | |
2554 | case C_RSYM: | |
2555 | { | |
2556 | /* We probably could save a few instructions by assuming that | |
2557 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
7a78ae4e | 2558 | int naux1 = symbol.n_numaux + 1; |
a109c7c1 | 2559 | |
c906108c | 2560 | ssymnum += naux1; |
7a78ae4e | 2561 | sraw_symbol += bfd_coff_symesz (abfd) * naux1; |
c906108c SS |
2562 | } |
2563 | break; | |
2564 | ||
2565 | case C_BINCL: | |
d5d0a62f | 2566 | { |
581e13c1 | 2567 | /* Mark down an include file in the current psymtab. */ |
d5d0a62f | 2568 | enum language tmp_language; |
a109c7c1 | 2569 | |
d5d0a62f EZ |
2570 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2571 | &ssymnum, objfile); | |
2572 | ||
2573 | tmp_language = deduce_language_from_filename (namestring); | |
2574 | ||
2575 | /* Only change the psymtab's language if we've learned | |
2576 | something useful (eg. tmp_language is not language_unknown). | |
2577 | In addition, to match what start_subfile does, never change | |
2578 | from C++ to C. */ | |
2579 | if (tmp_language != language_unknown | |
2580 | && (tmp_language != language_c | |
2581 | || psymtab_language != language_cplus)) | |
2582 | psymtab_language = tmp_language; | |
2583 | ||
2584 | /* In C++, one may expect the same filename to come round many | |
2585 | times, when code is coming alternately from the main file | |
581e13c1 | 2586 | and from inline functions in other files. So I check to see |
d5d0a62f EZ |
2587 | if this is a file we've seen before -- either the main |
2588 | source file, or a previously included file. | |
2589 | ||
2590 | This seems to be a lot of time to be spending on N_SOL, but | |
2591 | things like "break c-exp.y:435" need to work (I | |
2592 | suppose the psymtab_include_list could be hashed or put | |
2593 | in a binary tree, if profiling shows this is a major hog). */ | |
7ecb6532 | 2594 | if (pst && strcmp (namestring, pst->filename) == 0) |
d5d0a62f | 2595 | continue; |
a109c7c1 | 2596 | |
d5d0a62f | 2597 | { |
aa1ee363 | 2598 | int i; |
a109c7c1 | 2599 | |
d5d0a62f | 2600 | for (i = 0; i < includes_used; i++) |
7ecb6532 | 2601 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
d5d0a62f EZ |
2602 | { |
2603 | i = -1; | |
2604 | break; | |
2605 | } | |
2606 | if (i == -1) | |
2607 | continue; | |
2608 | } | |
2609 | psymtab_include_list[includes_used++] = namestring; | |
2610 | if (includes_used >= includes_allocated) | |
2611 | { | |
0d5cff50 | 2612 | const char **orig = psymtab_include_list; |
c906108c | 2613 | |
0d5cff50 | 2614 | psymtab_include_list = (const char **) |
d5d0a62f | 2615 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 2616 | sizeof (const char *)); |
4efb68b1 | 2617 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 2618 | includes_used * sizeof (const char *)); |
d5d0a62f EZ |
2619 | } |
2620 | continue; | |
2621 | } | |
c906108c SS |
2622 | case C_FUN: |
2623 | /* The value of the C_FUN is not the address of the function (it | |
2624 | appears to be the address before linking), but as long as it | |
2625 | is smaller than the actual address, then find_pc_partial_function | |
2626 | will use the minimal symbols instead. I hope. */ | |
2627 | ||
2628 | case C_GSYM: | |
2629 | case C_ECOML: | |
2630 | case C_DECL: | |
2631 | case C_STSYM: | |
d5d0a62f | 2632 | { |
e28566f7 | 2633 | const char *p; |
a109c7c1 | 2634 | |
d5d0a62f EZ |
2635 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2636 | &ssymnum, objfile); | |
2637 | ||
ed4b0e6a | 2638 | p = strchr (namestring, ':'); |
d5d0a62f EZ |
2639 | if (!p) |
2640 | continue; /* Not a debugging symbol. */ | |
2641 | ||
2642 | /* Main processing section for debugging symbols which | |
2643 | the initial read through the symbol tables needs to worry | |
2644 | about. If we reach this point, the symbol which we are | |
2645 | considering is definitely one we are interested in. | |
2646 | p must also contain the (valid) index into the namestring | |
2647 | which indicates the debugging type symbol. */ | |
2648 | ||
2649 | switch (p[1]) | |
2650 | { | |
2651 | case 'S': | |
3e43a32a MS |
2652 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2653 | SECT_OFF_DATA (objfile)); | |
149ad273 | 2654 | |
5e2b427d | 2655 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 2656 | namestring = gdbarch_static_transform_name |
5e2b427d | 2657 | (gdbarch, namestring); |
149ad273 | 2658 | |
04a679b8 | 2659 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2660 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f | 2661 | &objfile->static_psymbols, |
1762568f | 2662 | symbol.n_value, |
d5d0a62f EZ |
2663 | psymtab_language, objfile); |
2664 | continue; | |
2665 | ||
2666 | case 'G': | |
3e43a32a MS |
2667 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2668 | SECT_OFF_DATA (objfile)); | |
d5d0a62f | 2669 | /* The addresses in these entries are reported to be |
581e13c1 | 2670 | wrong. See the code that reads 'G's for symtabs. */ |
04a679b8 | 2671 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2672 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f | 2673 | &objfile->global_psymbols, |
1762568f | 2674 | symbol.n_value, |
d5d0a62f EZ |
2675 | psymtab_language, objfile); |
2676 | continue; | |
2677 | ||
2678 | case 'T': | |
2679 | /* When a 'T' entry is defining an anonymous enum, it | |
2680 | may have a name which is the empty string, or a | |
2681 | single space. Since they're not really defining a | |
2682 | symbol, those shouldn't go in the partial symbol | |
2683 | table. We do pick up the elements of such enums at | |
2684 | 'check_enum:', below. */ | |
2685 | if (p >= namestring + 2 | |
2686 | || (p == namestring + 1 | |
2687 | && namestring[0] != ' ')) | |
2688 | { | |
04a679b8 | 2689 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2690 | STRUCT_DOMAIN, LOC_TYPEDEF, |
d5d0a62f | 2691 | &objfile->static_psymbols, |
1762568f | 2692 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2693 | if (p[2] == 't') |
2694 | { | |
2695 | /* Also a typedef with the same name. */ | |
04a679b8 | 2696 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2697 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f | 2698 | &objfile->static_psymbols, |
1762568f | 2699 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2700 | p += 1; |
2701 | } | |
d5d0a62f EZ |
2702 | } |
2703 | goto check_enum; | |
2704 | ||
2705 | case 't': | |
581e13c1 | 2706 | if (p != namestring) /* a name is there, not just :T... */ |
d5d0a62f | 2707 | { |
04a679b8 | 2708 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2709 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f | 2710 | &objfile->static_psymbols, |
1762568f | 2711 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2712 | } |
2713 | check_enum: | |
2714 | /* If this is an enumerated type, we need to | |
2715 | add all the enum constants to the partial symbol | |
2716 | table. This does not cover enums without names, e.g. | |
2717 | "enum {a, b} c;" in C, but fortunately those are | |
2718 | rare. There is no way for GDB to find those from the | |
2719 | enum type without spending too much time on it. Thus | |
2720 | to solve this problem, the compiler needs to put out the | |
2721 | enum in a nameless type. GCC2 does this. */ | |
2722 | ||
2723 | /* We are looking for something of the form | |
2724 | <name> ":" ("t" | "T") [<number> "="] "e" | |
2725 | {<constant> ":" <value> ","} ";". */ | |
2726 | ||
2727 | /* Skip over the colon and the 't' or 'T'. */ | |
2728 | p += 2; | |
2729 | /* This type may be given a number. Also, numbers can come | |
2730 | in pairs like (0,26). Skip over it. */ | |
2731 | while ((*p >= '0' && *p <= '9') | |
2732 | || *p == '(' || *p == ',' || *p == ')' | |
2733 | || *p == '=') | |
2734 | p++; | |
2735 | ||
2736 | if (*p++ == 'e') | |
2737 | { | |
3e43a32a MS |
2738 | /* The aix4 compiler emits extra crud before the |
2739 | members. */ | |
d5d0a62f EZ |
2740 | if (*p == '-') |
2741 | { | |
2742 | /* Skip over the type (?). */ | |
2743 | while (*p != ':') | |
2744 | p++; | |
2745 | ||
2746 | /* Skip over the colon. */ | |
2747 | p++; | |
2748 | } | |
2749 | ||
2750 | /* We have found an enumerated type. */ | |
2751 | /* According to comments in read_enum_type | |
2752 | a comma could end it instead of a semicolon. | |
2753 | I don't know where that happens. | |
2754 | Accept either. */ | |
2755 | while (*p && *p != ';' && *p != ',') | |
2756 | { | |
e28566f7 | 2757 | const char *q; |
d5d0a62f EZ |
2758 | |
2759 | /* Check for and handle cretinous dbx symbol name | |
2760 | continuation! */ | |
2761 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
2762 | p = next_symbol_text (objfile); | |
2763 | ||
2764 | /* Point to the character after the name | |
2765 | of the enum constant. */ | |
2766 | for (q = p; *q && *q != ':'; q++) | |
2767 | ; | |
2768 | /* Note that the value doesn't matter for | |
2769 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 2770 | add_psymbol_to_list (p, q - p, 1, |
176620f1 | 2771 | VAR_DOMAIN, LOC_CONST, |
1762568f | 2772 | &objfile->static_psymbols, |
d5d0a62f EZ |
2773 | 0, psymtab_language, objfile); |
2774 | /* Point past the name. */ | |
2775 | p = q; | |
2776 | /* Skip over the value. */ | |
2777 | while (*p && *p != ',') | |
2778 | p++; | |
2779 | /* Advance past the comma. */ | |
2780 | if (*p) | |
2781 | p++; | |
2782 | } | |
2783 | } | |
2784 | continue; | |
2785 | ||
2786 | case 'c': | |
2787 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 2788 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2789 | VAR_DOMAIN, LOC_CONST, |
1762568f | 2790 | &objfile->static_psymbols, |
d5d0a62f EZ |
2791 | 0, psymtab_language, objfile); |
2792 | continue; | |
2793 | ||
2794 | case 'f': | |
2795 | if (! pst) | |
2796 | { | |
2797 | int name_len = p - namestring; | |
224c3ddb | 2798 | char *name = (char *) xmalloc (name_len + 1); |
a109c7c1 | 2799 | |
d5d0a62f EZ |
2800 | memcpy (name, namestring, name_len); |
2801 | name[name_len] = '\0'; | |
23136709 | 2802 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2803 | xfree (name); |
2804 | } | |
3e43a32a MS |
2805 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2806 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2807 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2808 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f | 2809 | &objfile->static_psymbols, |
1762568f | 2810 | symbol.n_value, |
d5d0a62f EZ |
2811 | psymtab_language, objfile); |
2812 | continue; | |
2813 | ||
2814 | /* Global functions were ignored here, but now they | |
2815 | are put into the global psymtab like one would expect. | |
2816 | They're also in the minimal symbol table. */ | |
2817 | case 'F': | |
2818 | if (! pst) | |
2819 | { | |
2820 | int name_len = p - namestring; | |
224c3ddb | 2821 | char *name = (char *) xmalloc (name_len + 1); |
a109c7c1 | 2822 | |
d5d0a62f EZ |
2823 | memcpy (name, namestring, name_len); |
2824 | name[name_len] = '\0'; | |
23136709 | 2825 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2826 | xfree (name); |
2827 | } | |
9f1d5432 PH |
2828 | |
2829 | /* We need only the minimal symbols for these | |
581e13c1 | 2830 | loader-generated definitions. Keeping the global |
9f1d5432 | 2831 | symbols leads to "in psymbols but not in symbols" |
581e13c1 | 2832 | errors. */ |
61012eef | 2833 | if (startswith (namestring, "@FIX")) |
9f1d5432 PH |
2834 | continue; |
2835 | ||
3e43a32a MS |
2836 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2837 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2838 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2839 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f | 2840 | &objfile->global_psymbols, |
1762568f | 2841 | symbol.n_value, |
d5d0a62f EZ |
2842 | psymtab_language, objfile); |
2843 | continue; | |
2844 | ||
2845 | /* Two things show up here (hopefully); static symbols of | |
2846 | local scope (static used inside braces) or extensions | |
2847 | of structure symbols. We can ignore both. */ | |
2848 | case 'V': | |
2849 | case '(': | |
2850 | case '0': | |
2851 | case '1': | |
2852 | case '2': | |
2853 | case '3': | |
2854 | case '4': | |
2855 | case '5': | |
2856 | case '6': | |
2857 | case '7': | |
2858 | case '8': | |
2859 | case '9': | |
2860 | case '-': | |
3e43a32a MS |
2861 | case '#': /* For symbol identification (used in |
2862 | live ranges). */ | |
d5d0a62f EZ |
2863 | continue; |
2864 | ||
2865 | case ':': | |
2866 | /* It is a C++ nested symbol. We don't need to record it | |
2867 | (I don't think); if we try to look up foo::bar::baz, | |
2868 | then symbols for the symtab containing foo should get | |
2869 | read in, I think. */ | |
2870 | /* Someone says sun cc puts out symbols like | |
2871 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2872 | which would get here with a symbol type of ':'. */ | |
2873 | continue; | |
2874 | ||
2875 | default: | |
3e43a32a MS |
2876 | /* Unexpected symbol descriptor. The second and |
2877 | subsequent stabs of a continued stab can show up | |
2878 | here. The question is whether they ever can mimic | |
2879 | a normal stab--it would be nice if not, since we | |
2880 | certainly don't want to spend the time searching to | |
2881 | the end of every string looking for a | |
2882 | backslash. */ | |
d5d0a62f | 2883 | |
23136709 | 2884 | complaint (&symfile_complaints, |
e2e0b3e5 | 2885 | _("unknown symbol descriptor `%c'"), p[1]); |
d5d0a62f EZ |
2886 | |
2887 | /* Ignore it; perhaps it is an extension that we don't | |
2888 | know about. */ | |
2889 | continue; | |
2890 | } | |
2891 | } | |
c906108c SS |
2892 | } |
2893 | } | |
2894 | ||
2895 | if (pst) | |
2896 | { | |
5c80ed9d | 2897 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
c906108c SS |
2898 | ssymnum, dependency_list, |
2899 | dependencies_used, textlow_not_set); | |
2900 | } | |
2901 | ||
581e13c1 MS |
2902 | /* Record the toc offset value of this symbol table into objfile |
2903 | structure. If no XMC_TC0 is found, toc_offset should be zero. | |
2904 | Another place to obtain this information would be file auxiliary | |
2905 | header. */ | |
c906108c | 2906 | |
b8b98ad1 | 2907 | XCOFF_DATA (objfile)->toc_offset = toc_offset; |
c906108c SS |
2908 | } |
2909 | ||
2910 | /* Return the toc offset value for a given objfile. */ | |
2911 | ||
2912 | CORE_ADDR | |
63807e1d | 2913 | xcoff_get_toc_offset (struct objfile *objfile) |
c906108c SS |
2914 | { |
2915 | if (objfile) | |
b8b98ad1 | 2916 | return XCOFF_DATA (objfile)->toc_offset; |
c906108c SS |
2917 | return 0; |
2918 | } | |
2919 | ||
2920 | /* Scan and build partial symbols for a symbol file. | |
2921 | We have been initialized by a call to dbx_symfile_init, which | |
2922 | put all the relevant info into a "struct dbx_symfile_info", | |
2923 | hung off the objfile structure. | |
2924 | ||
2925 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
581e13c1 MS |
2926 | various sections are (depending where the sections were actually |
2927 | loaded). */ | |
c906108c SS |
2928 | |
2929 | static void | |
f4352531 | 2930 | xcoff_initial_scan (struct objfile *objfile, int symfile_flags) |
c906108c SS |
2931 | { |
2932 | bfd *abfd; | |
2933 | int val; | |
2934 | struct cleanup *back_to; | |
c5aa993b JM |
2935 | int num_symbols; /* # of symbols */ |
2936 | file_ptr symtab_offset; /* symbol table and */ | |
2937 | file_ptr stringtab_offset; /* string table file offsets */ | |
c906108c | 2938 | struct coff_symfile_info *info; |
4262abfb | 2939 | const char *name; |
c906108c SS |
2940 | unsigned int size; |
2941 | ||
b8b98ad1 | 2942 | info = XCOFF_DATA (objfile); |
c906108c | 2943 | symfile_bfd = abfd = objfile->obfd; |
4262abfb | 2944 | name = objfile_name (objfile); |
c906108c SS |
2945 | |
2946 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2947 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2948 | stringtab_offset = symtab_offset + | |
c5aa993b | 2949 | num_symbols * coff_data (abfd)->local_symesz; |
c906108c SS |
2950 | |
2951 | info->min_lineno_offset = 0; | |
2952 | info->max_lineno_offset = 0; | |
2953 | bfd_map_over_sections (abfd, find_linenos, info); | |
2954 | ||
2955 | if (num_symbols > 0) | |
2956 | { | |
2957 | /* Read the string table. */ | |
2958 | init_stringtab (abfd, stringtab_offset, objfile); | |
2959 | ||
2960 | /* Read the .debug section, if present. */ | |
2961 | { | |
7be0c536 | 2962 | struct bfd_section *secp; |
c906108c | 2963 | bfd_size_type length; |
ea9f10bb | 2964 | bfd_byte *debugsec = NULL; |
c906108c SS |
2965 | |
2966 | secp = bfd_get_section_by_name (abfd, ".debug"); | |
2967 | if (secp) | |
2968 | { | |
2969 | length = bfd_section_size (abfd, secp); | |
2970 | if (length) | |
2971 | { | |
224c3ddb SM |
2972 | debugsec |
2973 | = (bfd_byte *) obstack_alloc (&objfile->objfile_obstack, | |
2974 | length); | |
c906108c | 2975 | |
ea9f10bb | 2976 | if (!bfd_get_full_section_contents (abfd, secp, &debugsec)) |
c906108c | 2977 | { |
8a3fe4f8 | 2978 | error (_("Error reading .debug section of `%s': %s"), |
c906108c SS |
2979 | name, bfd_errmsg (bfd_get_error ())); |
2980 | } | |
2981 | } | |
2982 | } | |
745eb4fd | 2983 | info->debugsec = (char *) debugsec; |
c906108c SS |
2984 | } |
2985 | } | |
2986 | ||
2987 | /* Read the symbols. We keep them in core because we will want to | |
2988 | access them randomly in read_symbol*. */ | |
2989 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); | |
2990 | if (val < 0) | |
8a3fe4f8 | 2991 | error (_("Error reading symbols from %s: %s"), |
c906108c SS |
2992 | name, bfd_errmsg (bfd_get_error ())); |
2993 | size = coff_data (abfd)->local_symesz * num_symbols; | |
224c3ddb | 2994 | info->symtbl = (char *) obstack_alloc (&objfile->objfile_obstack, size); |
b8b98ad1 TT |
2995 | info->symtbl_num_syms = num_symbols; |
2996 | ||
2997 | val = bfd_bread (info->symtbl, size, abfd); | |
c906108c | 2998 | if (val != size) |
e2e0b3e5 | 2999 | perror_with_name (_("reading symbol table")); |
c906108c | 3000 | |
581e13c1 | 3001 | /* If we are reinitializing, or if we have never loaded syms yet, init. */ |
de1d8fb9 | 3002 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3003 | /* I'm not sure how how good num_symbols is; the rule of thumb in |
3004 | init_psymbol_list was developed for a.out. On the one hand, | |
3005 | num_symbols includes auxents. On the other hand, it doesn't | |
3006 | include N_SLINE. */ | |
3007 | init_psymbol_list (objfile, num_symbols); | |
3008 | ||
3009 | free_pending_blocks (); | |
a0b3c4fd | 3010 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c SS |
3011 | |
3012 | init_minimal_symbol_collection (); | |
56e290f4 | 3013 | make_cleanup_discard_minimal_symbols (); |
c906108c SS |
3014 | |
3015 | /* Now that the symbol table data of the executable file are all in core, | |
3016 | process them and define symbols accordingly. */ | |
3017 | ||
d4f3574e | 3018 | scan_xcoff_symtab (objfile); |
c906108c SS |
3019 | |
3020 | /* Install any minimal symbols that have been collected as the current | |
581e13c1 | 3021 | minimal symbols for this objfile. */ |
c906108c SS |
3022 | |
3023 | install_minimal_symbols (objfile); | |
3024 | ||
316a8b21 TG |
3025 | /* DWARF2 sections. */ |
3026 | ||
3027 | if (dwarf2_has_info (objfile, &dwarf2_xcoff_names)) | |
3028 | dwarf2_build_psymtabs (objfile); | |
3029 | ||
3030 | dwarf2_build_frame_info (objfile); | |
3031 | ||
c906108c SS |
3032 | do_cleanups (back_to); |
3033 | } | |
3034 | \f | |
d4f3574e | 3035 | static void |
3e43a32a | 3036 | xcoff_symfile_offsets (struct objfile *objfile, |
66f65e2b | 3037 | const struct section_addr_info *addrs) |
c906108c | 3038 | { |
4d1eb6b4 | 3039 | const char *first_section_name; |
c906108c | 3040 | |
4d1eb6b4 | 3041 | default_symfile_offsets (objfile, addrs); |
c906108c | 3042 | |
4d1eb6b4 JB |
3043 | /* Oneof the weird side-effects of default_symfile_offsets is that |
3044 | it sometimes sets some section indices to zero for sections that, | |
3045 | in fact do not exist. See the body of default_symfile_offsets | |
3046 | for more info on when that happens. Undo that, as this then allows | |
3047 | us to test whether the associated section exists or not, and then | |
3048 | access it quickly (without searching it again). */ | |
b8fbeb18 | 3049 | |
4d1eb6b4 JB |
3050 | if (objfile->num_sections == 0) |
3051 | return; /* Is that even possible? Better safe than sorry. */ | |
b8fbeb18 | 3052 | |
4d1eb6b4 JB |
3053 | first_section_name |
3054 | = bfd_section_name (objfile->obfd, objfile->sections[0].the_bfd_section); | |
b8fbeb18 | 3055 | |
4d1eb6b4 JB |
3056 | if (objfile->sect_index_text == 0 |
3057 | && strcmp (first_section_name, ".text") != 0) | |
3058 | objfile->sect_index_text = -1; | |
b8fbeb18 | 3059 | |
4d1eb6b4 JB |
3060 | if (objfile->sect_index_data == 0 |
3061 | && strcmp (first_section_name, ".data") != 0) | |
3062 | objfile->sect_index_data = -1; | |
3063 | ||
3064 | if (objfile->sect_index_bss == 0 | |
3065 | && strcmp (first_section_name, ".bss") != 0) | |
3066 | objfile->sect_index_bss = -1; | |
3067 | ||
3068 | if (objfile->sect_index_rodata == 0 | |
3069 | && strcmp (first_section_name, ".rodata") != 0) | |
3070 | objfile->sect_index_rodata = -1; | |
c906108c SS |
3071 | } |
3072 | ||
3073 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
3074 | ||
00b5771c | 3075 | static const struct sym_fns xcoff_sym_fns = |
c906108c SS |
3076 | { |
3077 | ||
7a78ae4e | 3078 | /* It is possible that coff and xcoff should be merged as |
c906108c SS |
3079 | they do have fundamental similarities (for example, the extra storage |
3080 | classes used for stabs could presumably be recognized in any COFF file). | |
3081 | However, in addition to obvious things like all the csect hair, there are | |
3082 | some subtler differences between xcoffread.c and coffread.c, notably | |
3083 | the fact that coffread.c has no need to read in all the symbols, but | |
3084 | xcoffread.c reads all the symbols and does in fact randomly access them | |
3085 | (in C_BSTAT and line number processing). */ | |
3086 | ||
3e43a32a MS |
3087 | xcoff_new_init, /* init anything gbl to entire symtab */ |
3088 | xcoff_symfile_init, /* read initial info, setup for sym_read() */ | |
3089 | xcoff_initial_scan, /* read a symbol file into symtab */ | |
b11896a5 | 3090 | NULL, /* sym_read_psymbols */ |
3e43a32a MS |
3091 | xcoff_symfile_finish, /* finished with file, cleanup */ |
3092 | xcoff_symfile_offsets, /* xlate offsets ext->int form */ | |
3093 | default_symfile_segments, /* Get segment information from a file. */ | |
3094 | aix_process_linenos, | |
3095 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3096 | NULL, /* sym_probe_fns */ |
00b5771c | 3097 | &psym_functions |
c906108c SS |
3098 | }; |
3099 | ||
d5367fe1 JB |
3100 | /* Same as xcoff_get_n_import_files, but for core files. */ |
3101 | ||
3102 | static int | |
3103 | xcoff_get_core_n_import_files (bfd *abfd) | |
3104 | { | |
3105 | asection *sect = bfd_get_section_by_name (abfd, ".ldinfo"); | |
3106 | gdb_byte buf[4]; | |
3107 | file_ptr offset = 0; | |
3108 | int n_entries = 0; | |
3109 | ||
3110 | if (sect == NULL) | |
3111 | return -1; /* Not a core file. */ | |
3112 | ||
3113 | for (offset = 0; offset < bfd_get_section_size (sect);) | |
3114 | { | |
3115 | int next; | |
3116 | ||
3117 | n_entries++; | |
3118 | ||
3119 | if (!bfd_get_section_contents (abfd, sect, buf, offset, 4)) | |
3120 | return -1; | |
3121 | next = bfd_get_32 (abfd, buf); | |
3122 | if (next == 0) | |
3123 | break; /* This is the last entry. */ | |
3124 | offset += next; | |
3125 | } | |
3126 | ||
3127 | /* Return the number of entries, excluding the first one, which is | |
3128 | the path to the executable that produced this core file. */ | |
3129 | return n_entries - 1; | |
3130 | } | |
3131 | ||
3132 | /* Return the number of import files (shared libraries) that the given | |
3133 | BFD depends on. Return -1 if this number could not be computed. */ | |
3134 | ||
3135 | int | |
3136 | xcoff_get_n_import_files (bfd *abfd) | |
3137 | { | |
3138 | asection *sect = bfd_get_section_by_name (abfd, ".loader"); | |
3139 | gdb_byte buf[4]; | |
3140 | int l_nimpid; | |
3141 | ||
3142 | /* If the ".loader" section does not exist, the objfile is probably | |
3143 | not an executable. Might be a core file... */ | |
3144 | if (sect == NULL) | |
3145 | return xcoff_get_core_n_import_files (abfd); | |
3146 | ||
3147 | /* The number of entries in the Import Files Table is stored in | |
3148 | field l_nimpid. This field is always at offset 16, and is | |
3149 | always 4 bytes long. Read those 4 bytes. */ | |
3150 | ||
3151 | if (!bfd_get_section_contents (abfd, sect, buf, 16, 4)) | |
3152 | return -1; | |
3153 | l_nimpid = bfd_get_32 (abfd, buf); | |
3154 | ||
3155 | /* By convention, the first entry is the default LIBPATH value | |
3156 | to be used by the system loader, so it does not count towards | |
3157 | the number of import files. */ | |
3158 | return l_nimpid - 1; | |
3159 | } | |
3160 | ||
b8b98ad1 TT |
3161 | /* Free the per-objfile xcoff data. */ |
3162 | ||
3163 | static void | |
3164 | xcoff_free_info (struct objfile *objfile, void *arg) | |
3165 | { | |
3166 | xfree (arg); | |
3167 | } | |
3168 | ||
63807e1d PA |
3169 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
3170 | extern initialize_file_ftype _initialize_xcoffread; | |
3171 | ||
c906108c | 3172 | void |
fba45db2 | 3173 | _initialize_xcoffread (void) |
c906108c | 3174 | { |
c256e171 | 3175 | add_symtab_fns (bfd_target_xcoff_flavour, &xcoff_sym_fns); |
b8b98ad1 TT |
3176 | |
3177 | xcoff_objfile_data_key = register_objfile_data_with_cleanup (NULL, | |
3178 | xcoff_free_info); | |
c906108c | 3179 | } |