Commit | Line | Data |
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c906108c | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
197e01b6 | 2 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
4c38e0a4 | 3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, |
7b6bb8da | 4 | 2010, 2011 Free Software Foundation, Inc. |
c906108c SS |
5 | Derived from coffread.c, dbxread.c, and a lot of hacking. |
6 | Contributed by IBM Corporation. | |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 13 | (at your option) any later version. |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b | 20 | You should have received a copy of the GNU General Public License |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include "bfd.h" | |
25 | ||
26 | #include <sys/types.h> | |
27 | #include <fcntl.h> | |
28 | #include <ctype.h> | |
29 | #include "gdb_string.h" | |
30 | ||
31 | #include <sys/param.h> | |
c0ccb908 | 32 | #ifdef HAVE_SYS_FILE_H |
c906108c SS |
33 | #include <sys/file.h> |
34 | #endif | |
35 | #include "gdb_stat.h" | |
36 | ||
37 | #include "coff/internal.h" | |
38 | #include "libcoff.h" /* FIXME, internal data from BFD */ | |
11ed25ac KB |
39 | #include "coff/xcoff.h" |
40 | #include "libxcoff.h" | |
c906108c | 41 | #include "coff/rs6000.h" |
63807e1d | 42 | #include "xcoffread.h" |
c906108c SS |
43 | |
44 | #include "symtab.h" | |
45 | #include "gdbtypes.h" | |
9ab9195f | 46 | /* FIXME: ezannoni/2004-02-13 Verify if the include below is really needed. */ |
c906108c SS |
47 | #include "symfile.h" |
48 | #include "objfiles.h" | |
49 | #include "buildsym.h" | |
50 | #include "stabsread.h" | |
51 | #include "expression.h" | |
c906108c | 52 | #include "complaints.h" |
ccefe4c4 | 53 | #include "psympriv.h" |
c906108c SS |
54 | |
55 | #include "gdb-stabs.h" | |
56 | ||
57 | /* For interface with stabsread.c. */ | |
58 | #include "aout/stab_gnu.h" | |
59 | ||
c906108c SS |
60 | \f |
61 | /* We put a pointer to this structure in the read_symtab_private field | |
62 | of the psymtab. */ | |
63 | ||
c5aa993b JM |
64 | struct symloc |
65 | { | |
c906108c | 66 | |
c5aa993b | 67 | /* First symbol number for this file. */ |
c906108c | 68 | |
c5aa993b | 69 | int first_symnum; |
c906108c | 70 | |
c5aa993b JM |
71 | /* Number of symbols in the section of the symbol table devoted to |
72 | this file's symbols (actually, the section bracketed may contain | |
73 | more than just this file's symbols). If numsyms is 0, the only | |
74 | reason for this thing's existence is the dependency list. Nothing | |
75 | else will happen when it is read in. */ | |
c906108c | 76 | |
c5aa993b | 77 | int numsyms; |
c906108c | 78 | |
3e43a32a MS |
79 | /* Position of the start of the line number information for this |
80 | psymtab. */ | |
c5aa993b JM |
81 | unsigned int lineno_off; |
82 | }; | |
c906108c | 83 | |
581e13c1 | 84 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
85 | |
86 | static enum language psymtab_language = language_unknown; | |
c906108c | 87 | \f |
c5aa993b | 88 | |
581e13c1 | 89 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 90 | |
c5aa993b JM |
91 | struct coff_symbol |
92 | { | |
93 | char *c_name; | |
581e13c1 MS |
94 | int c_symnum; /* Symbol number of this entry. */ |
95 | int c_naux; /* 0 if syment only, 1 if syment + auxent. */ | |
c5aa993b JM |
96 | long c_value; |
97 | unsigned char c_sclass; | |
98 | int c_secnum; | |
99 | unsigned int c_type; | |
100 | }; | |
c906108c | 101 | |
581e13c1 | 102 | /* Last function's saved coff symbol `cs'. */ |
c906108c SS |
103 | |
104 | static struct coff_symbol fcn_cs_saved; | |
105 | ||
106 | static bfd *symfile_bfd; | |
107 | ||
108 | /* Core address of start and end of text of current source file. | |
109 | This is calculated from the first function seen after a C_FILE | |
581e13c1 | 110 | symbol. */ |
c906108c SS |
111 | |
112 | ||
113 | static CORE_ADDR cur_src_end_addr; | |
114 | ||
115 | /* Core address of the end of the first object file. */ | |
116 | ||
117 | static CORE_ADDR first_object_file_end; | |
118 | ||
581e13c1 | 119 | /* Initial symbol-table-debug-string vector length. */ |
c906108c SS |
120 | |
121 | #define INITIAL_STABVECTOR_LENGTH 40 | |
122 | ||
123 | /* Nonzero if within a function (so symbols should be local, | |
124 | if nothing says specifically). */ | |
125 | ||
126 | int within_function; | |
127 | ||
128 | /* Size of a COFF symbol. I think it is always 18, so I'm not sure | |
129 | there is any reason not to just use a #define, but might as well | |
130 | ask BFD for the size and store it here, I guess. */ | |
131 | ||
c5aa993b | 132 | static unsigned local_symesz; |
c906108c | 133 | |
c5aa993b JM |
134 | struct coff_symfile_info |
135 | { | |
581e13c1 MS |
136 | file_ptr min_lineno_offset; /* Where in file lowest line#s are. */ |
137 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */ | |
c906108c | 138 | |
c5aa993b JM |
139 | /* Pointer to the string table. */ |
140 | char *strtbl; | |
c906108c | 141 | |
c5aa993b JM |
142 | /* Pointer to debug section. */ |
143 | char *debugsec; | |
c906108c | 144 | |
c5aa993b JM |
145 | /* Pointer to the a.out symbol table. */ |
146 | char *symtbl; | |
c906108c | 147 | |
c5aa993b JM |
148 | /* Number of symbols in symtbl. */ |
149 | int symtbl_num_syms; | |
c906108c | 150 | |
c5aa993b JM |
151 | /* Offset in data section to TOC anchor. */ |
152 | CORE_ADDR toc_offset; | |
153 | }; | |
c906108c | 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 }, | |
162 | { NULL, NULL }, /* debug_macinfo */ | |
163 | { ".dwstr", NULL }, | |
164 | { ".dwrnges", NULL }, | |
165 | { NULL, NULL }, /* debug_types */ | |
166 | { ".dwframe", NULL }, | |
167 | { NULL, NULL }, /* eh_frame */ | |
168 | { NULL, NULL } /* gdb_index */ | |
169 | }; | |
170 | ||
23136709 KB |
171 | static void |
172 | bf_notfound_complaint (void) | |
173 | { | |
3e43a32a MS |
174 | complaint (&symfile_complaints, |
175 | _("line numbers off, `.bf' symbol not found")); | |
23136709 | 176 | } |
c906108c | 177 | |
23136709 KB |
178 | static void |
179 | ef_complaint (int arg1) | |
180 | { | |
181 | complaint (&symfile_complaints, | |
e2e0b3e5 | 182 | _("Mismatched .ef symbol ignored starting at symnum %d"), arg1); |
23136709 | 183 | } |
c906108c | 184 | |
23136709 KB |
185 | static void |
186 | eb_complaint (int arg1) | |
187 | { | |
188 | complaint (&symfile_complaints, | |
e2e0b3e5 | 189 | _("Mismatched .eb symbol ignored starting at symnum %d"), arg1); |
23136709 | 190 | } |
c906108c | 191 | |
a14ed312 | 192 | static void xcoff_initial_scan (struct objfile *, int); |
c906108c | 193 | |
a14ed312 | 194 | static void scan_xcoff_symtab (struct objfile *); |
c906108c | 195 | |
a14ed312 | 196 | static char *xcoff_next_symbol_text (struct objfile *); |
c906108c | 197 | |
a14ed312 | 198 | static void record_include_begin (struct coff_symbol *); |
c906108c SS |
199 | |
200 | static void | |
a14ed312 KB |
201 | enter_line_range (struct subfile *, unsigned, unsigned, |
202 | CORE_ADDR, CORE_ADDR, unsigned *); | |
c906108c | 203 | |
a14ed312 | 204 | static void init_stringtab (bfd *, file_ptr, struct objfile *); |
c906108c | 205 | |
a14ed312 | 206 | static void xcoff_symfile_init (struct objfile *); |
c906108c | 207 | |
a14ed312 | 208 | static void xcoff_new_init (struct objfile *); |
c906108c | 209 | |
a14ed312 | 210 | static void xcoff_symfile_finish (struct objfile *); |
c906108c | 211 | |
570b8f7c AC |
212 | static void xcoff_symfile_offsets (struct objfile *, |
213 | struct section_addr_info *addrs); | |
c906108c | 214 | |
a14ed312 | 215 | static char *coff_getfilename (union internal_auxent *, struct objfile *); |
c906108c | 216 | |
a14ed312 | 217 | static void read_symbol (struct internal_syment *, int); |
c906108c | 218 | |
a14ed312 | 219 | static int read_symbol_lineno (int); |
c906108c | 220 | |
470d5666 | 221 | static CORE_ADDR read_symbol_nvalue (int); |
c906108c | 222 | |
a14ed312 KB |
223 | static struct symbol *process_xcoff_symbol (struct coff_symbol *, |
224 | struct objfile *); | |
c906108c | 225 | |
a14ed312 | 226 | static void read_xcoff_symtab (struct partial_symtab *); |
c906108c SS |
227 | |
228 | #if 0 | |
a14ed312 | 229 | static void add_stab_to_list (char *, struct pending_stabs **); |
c906108c SS |
230 | #endif |
231 | ||
a14ed312 | 232 | static int compare_lte (const void *, const void *); |
c906108c | 233 | |
a14ed312 | 234 | static struct linetable *arrange_linetable (struct linetable *); |
c906108c | 235 | |
a14ed312 | 236 | static void record_include_end (struct coff_symbol *); |
c906108c | 237 | |
a14ed312 | 238 | static void process_linenos (CORE_ADDR, CORE_ADDR); |
c906108c | 239 | \f |
c5aa993b | 240 | |
c906108c SS |
241 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
242 | code. */ | |
a14ed312 KB |
243 | static int secnum_to_section (int, struct objfile *); |
244 | static asection *secnum_to_bfd_section (int, struct objfile *); | |
c906108c | 245 | |
c5aa993b JM |
246 | struct find_targ_sec_arg |
247 | { | |
248 | int targ_index; | |
249 | int *resultp; | |
250 | asection **bfd_sect; | |
b8fbeb18 | 251 | struct objfile *objfile; |
c5aa993b | 252 | }; |
c906108c | 253 | |
a14ed312 | 254 | static void find_targ_sec (bfd *, asection *, void *); |
c906108c | 255 | |
c5aa993b | 256 | static void |
4efb68b1 | 257 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 258 | { |
c5aa993b | 259 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
b8fbeb18 | 260 | struct objfile *objfile = args->objfile; |
a109c7c1 | 261 | |
c906108c SS |
262 | if (sect->target_index == args->targ_index) |
263 | { | |
264 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
265 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
b8fbeb18 | 266 | *args->resultp = SECT_OFF_TEXT (objfile); |
c906108c | 267 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) |
b8fbeb18 | 268 | *args->resultp = SECT_OFF_DATA (objfile); |
c906108c | 269 | else |
44af9391 | 270 | *args->resultp = sect->index; |
c906108c SS |
271 | *args->bfd_sect = sect; |
272 | } | |
273 | } | |
274 | ||
275 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
276 | static int | |
fba45db2 | 277 | secnum_to_section (int secnum, struct objfile *objfile) |
c906108c | 278 | { |
b8fbeb18 | 279 | int off = SECT_OFF_TEXT (objfile); |
a109c7c1 | 280 | |
c906108c SS |
281 | asection *sect = NULL; |
282 | struct find_targ_sec_arg args; | |
283 | args.targ_index = secnum; | |
284 | args.resultp = &off; | |
285 | args.bfd_sect = § | |
b8fbeb18 | 286 | args.objfile = objfile; |
c906108c SS |
287 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
288 | return off; | |
289 | } | |
290 | ||
291 | /* Return the BFD section that CS points to. */ | |
292 | static asection * | |
fba45db2 | 293 | secnum_to_bfd_section (int secnum, struct objfile *objfile) |
c906108c | 294 | { |
b8fbeb18 | 295 | int off = SECT_OFF_TEXT (objfile); |
a109c7c1 | 296 | |
c906108c SS |
297 | asection *sect = NULL; |
298 | struct find_targ_sec_arg args; | |
299 | args.targ_index = secnum; | |
300 | args.resultp = &off; | |
301 | args.bfd_sect = § | |
7a78ae4e | 302 | args.objfile = objfile; |
c906108c SS |
303 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
304 | return sect; | |
305 | } | |
306 | \f | |
581e13c1 | 307 | /* add a given stab string into given stab vector. */ |
c906108c SS |
308 | |
309 | #if 0 | |
310 | ||
311 | static void | |
fba45db2 | 312 | add_stab_to_list (char *stabname, struct pending_stabs **stabvector) |
c906108c | 313 | { |
c5aa993b JM |
314 | if (*stabvector == NULL) |
315 | { | |
316 | *stabvector = (struct pending_stabs *) | |
317 | xmalloc (sizeof (struct pending_stabs) + | |
318 | INITIAL_STABVECTOR_LENGTH * sizeof (char *)); | |
319 | (*stabvector)->count = 0; | |
320 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
321 | } | |
322 | else if ((*stabvector)->count >= (*stabvector)->length) | |
323 | { | |
324 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
325 | *stabvector = (struct pending_stabs *) | |
326 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + | |
3e43a32a | 327 | (*stabvector)->length * sizeof (char *)); |
c5aa993b JM |
328 | } |
329 | (*stabvector)->stab[(*stabvector)->count++] = stabname; | |
c906108c SS |
330 | } |
331 | ||
332 | #endif | |
c5aa993b | 333 | \f/* *INDENT-OFF* */ |
c906108c SS |
334 | /* Linenos are processed on a file-by-file basis. |
335 | ||
336 | Two reasons: | |
337 | ||
c5aa993b | 338 | 1) xlc (IBM's native c compiler) postpones static function code |
581e13c1 | 339 | emission to the end of a compilation unit. This way it can |
c5aa993b | 340 | determine if those functions (statics) are needed or not, and |
581e13c1 | 341 | can do some garbage collection (I think). This makes line |
c5aa993b JM |
342 | numbers and corresponding addresses unordered, and we end up |
343 | with a line table like: | |
344 | ||
345 | ||
346 | lineno addr | |
347 | foo() 10 0x100 | |
348 | 20 0x200 | |
349 | 30 0x300 | |
350 | ||
351 | foo3() 70 0x400 | |
352 | 80 0x500 | |
353 | 90 0x600 | |
354 | ||
355 | static foo2() | |
356 | 40 0x700 | |
357 | 50 0x800 | |
358 | 60 0x900 | |
359 | ||
360 | and that breaks gdb's binary search on line numbers, if the | |
581e13c1 | 361 | above table is not sorted on line numbers. And that sort |
c5aa993b JM |
362 | should be on function based, since gcc can emit line numbers |
363 | like: | |
364 | ||
365 | 10 0x100 - for the init/test part of a for stmt. | |
366 | 20 0x200 | |
367 | 30 0x300 | |
368 | 10 0x400 - for the increment part of a for stmt. | |
369 | ||
581e13c1 | 370 | arrange_linetable() will do this sorting. |
c5aa993b JM |
371 | |
372 | 2) aix symbol table might look like: | |
373 | ||
374 | c_file // beginning of a new file | |
375 | .bi // beginning of include file | |
376 | .ei // end of include file | |
377 | .bi | |
378 | .ei | |
379 | ||
380 | basically, .bi/.ei pairs do not necessarily encapsulate | |
581e13c1 | 381 | their scope. They need to be recorded, and processed later |
c5aa993b JM |
382 | on when we come the end of the compilation unit. |
383 | Include table (inclTable) and process_linenos() handle | |
384 | that. */ | |
9846de1b | 385 | /* *INDENT-ON* */ |
c906108c | 386 | |
c5aa993b JM |
387 | |
388 | ||
581e13c1 | 389 | /* compare line table entry addresses. */ |
c906108c SS |
390 | |
391 | static int | |
fba45db2 | 392 | compare_lte (const void *lte1p, const void *lte2p) |
c906108c SS |
393 | { |
394 | struct linetable_entry *lte1 = (struct linetable_entry *) lte1p; | |
395 | struct linetable_entry *lte2 = (struct linetable_entry *) lte2p; | |
a109c7c1 | 396 | |
c906108c SS |
397 | return lte1->pc - lte2->pc; |
398 | } | |
399 | ||
581e13c1 MS |
400 | /* Given a line table with function entries are marked, arrange its |
401 | functions in ascending order and strip off function entry markers | |
402 | and return it in a newly created table. If the old one is good | |
403 | enough, return the old one. */ | |
c906108c SS |
404 | /* FIXME: I think all this stuff can be replaced by just passing |
405 | sort_linevec = 1 to end_symtab. */ | |
406 | ||
407 | static struct linetable * | |
b095261a | 408 | arrange_linetable (struct linetable *oldLineTb) |
c906108c | 409 | { |
c5aa993b JM |
410 | int ii, jj, newline, /* new line count */ |
411 | function_count; /* # of functions */ | |
c906108c | 412 | |
c5aa993b JM |
413 | struct linetable_entry *fentry; /* function entry vector */ |
414 | int fentry_size; /* # of function entries */ | |
415 | struct linetable *newLineTb; /* new line table */ | |
c906108c SS |
416 | |
417 | #define NUM_OF_FUNCTIONS 20 | |
418 | ||
419 | fentry_size = NUM_OF_FUNCTIONS; | |
c5aa993b | 420 | fentry = (struct linetable_entry *) |
c906108c SS |
421 | xmalloc (fentry_size * sizeof (struct linetable_entry)); |
422 | ||
c5aa993b JM |
423 | for (function_count = 0, ii = 0; ii < oldLineTb->nitems; ++ii) |
424 | { | |
c5aa993b | 425 | if (oldLineTb->item[ii].line == 0) |
581e13c1 | 426 | { /* Function entry found. */ |
c5aa993b | 427 | if (function_count >= fentry_size) |
581e13c1 | 428 | { /* Make sure you have room. */ |
c5aa993b JM |
429 | fentry_size *= 2; |
430 | fentry = (struct linetable_entry *) | |
3e43a32a MS |
431 | xrealloc (fentry, |
432 | fentry_size * sizeof (struct linetable_entry)); | |
c5aa993b JM |
433 | } |
434 | fentry[function_count].line = ii; | |
435 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
436 | ++function_count; | |
437 | } | |
c906108c | 438 | } |
c906108c | 439 | |
c5aa993b JM |
440 | if (function_count == 0) |
441 | { | |
b8c9b27d | 442 | xfree (fentry); |
c5aa993b JM |
443 | return oldLineTb; |
444 | } | |
c906108c | 445 | else if (function_count > 1) |
3e43a32a MS |
446 | qsort (fentry, function_count, |
447 | sizeof (struct linetable_entry), compare_lte); | |
c906108c | 448 | |
581e13c1 | 449 | /* Allocate a new line table. */ |
c906108c SS |
450 | newLineTb = (struct linetable *) |
451 | xmalloc | |
c5aa993b JM |
452 | (sizeof (struct linetable) + |
453 | (oldLineTb->nitems - function_count) * sizeof (struct linetable_entry)); | |
c906108c | 454 | |
581e13c1 MS |
455 | /* If line table does not start with a function beginning, copy up until |
456 | a function begin. */ | |
c906108c SS |
457 | |
458 | newline = 0; | |
459 | if (oldLineTb->item[0].line != 0) | |
c5aa993b JM |
460 | for (newline = 0; |
461 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
c906108c SS |
462 | newLineTb->item[newline] = oldLineTb->item[newline]; |
463 | ||
581e13c1 | 464 | /* Now copy function lines one by one. */ |
c906108c | 465 | |
c5aa993b JM |
466 | for (ii = 0; ii < function_count; ++ii) |
467 | { | |
468 | for (jj = fentry[ii].line + 1; | |
469 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
470 | ++jj, ++newline) | |
471 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
472 | } | |
b8c9b27d | 473 | xfree (fentry); |
c906108c | 474 | newLineTb->nitems = oldLineTb->nitems - function_count; |
c5aa993b JM |
475 | return newLineTb; |
476 | } | |
c906108c SS |
477 | |
478 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
581e13c1 | 479 | following `IncludeChain'. At the end of each symtab (end_symtab), |
c906108c | 480 | we will determine if we should create additional symtab's to |
581e13c1 | 481 | represent if (the include files. */ |
c906108c SS |
482 | |
483 | ||
c5aa993b JM |
484 | typedef struct _inclTable |
485 | { | |
486 | char *name; /* include filename */ | |
c906108c SS |
487 | |
488 | /* Offsets to the line table. end points to the last entry which is | |
489 | part of this include file. */ | |
c5aa993b JM |
490 | int begin, end; |
491 | ||
c906108c | 492 | struct subfile *subfile; |
581e13c1 | 493 | unsigned funStartLine; /* Start line # of its function. */ |
c5aa993b JM |
494 | } |
495 | InclTable; | |
c906108c SS |
496 | |
497 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
c5aa993b JM |
498 | static InclTable *inclTable; /* global include table */ |
499 | static int inclIndx; /* last entry to table */ | |
500 | static int inclLength; /* table length */ | |
501 | static int inclDepth; /* nested include depth */ | |
c906108c | 502 | |
a14ed312 | 503 | static void allocate_include_entry (void); |
c906108c SS |
504 | |
505 | static void | |
fba45db2 | 506 | record_include_begin (struct coff_symbol *cs) |
c906108c SS |
507 | { |
508 | if (inclDepth) | |
509 | { | |
510 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
c5aa993b | 511 | of course, but in corresponding .s files.). */ |
c906108c SS |
512 | |
513 | /* This can happen with old versions of GCC. | |
c5aa993b JM |
514 | GCC 2.3.3-930426 does not exhibit this on a test case which |
515 | a user said produced the message for him. */ | |
e2e0b3e5 | 516 | complaint (&symfile_complaints, _("Nested C_BINCL symbols")); |
c906108c SS |
517 | } |
518 | ++inclDepth; | |
519 | ||
520 | allocate_include_entry (); | |
521 | ||
c5aa993b JM |
522 | inclTable[inclIndx].name = cs->c_name; |
523 | inclTable[inclIndx].begin = cs->c_value; | |
c906108c SS |
524 | } |
525 | ||
526 | static void | |
fba45db2 | 527 | record_include_end (struct coff_symbol *cs) |
c906108c | 528 | { |
c5aa993b | 529 | InclTable *pTbl; |
c906108c SS |
530 | |
531 | if (inclDepth == 0) | |
532 | { | |
e2e0b3e5 | 533 | complaint (&symfile_complaints, _("Mismatched C_BINCL/C_EINCL pair")); |
c906108c SS |
534 | } |
535 | ||
536 | allocate_include_entry (); | |
537 | ||
c5aa993b | 538 | pTbl = &inclTable[inclIndx]; |
c906108c SS |
539 | pTbl->end = cs->c_value; |
540 | ||
541 | --inclDepth; | |
542 | ++inclIndx; | |
543 | } | |
544 | ||
545 | static void | |
fba45db2 | 546 | allocate_include_entry (void) |
c906108c SS |
547 | { |
548 | if (inclTable == NULL) | |
549 | { | |
c5aa993b | 550 | inclTable = (InclTable *) |
c906108c SS |
551 | xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); |
552 | memset (inclTable, | |
553 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
554 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; | |
555 | inclIndx = 0; | |
556 | } | |
557 | else if (inclIndx >= inclLength) | |
558 | { | |
559 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
c5aa993b | 560 | inclTable = (InclTable *) |
c906108c | 561 | xrealloc (inclTable, sizeof (InclTable) * inclLength); |
c5aa993b JM |
562 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, |
563 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
c906108c SS |
564 | } |
565 | } | |
566 | ||
567 | /* Global variable to pass the psymtab down to all the routines involved | |
568 | in psymtab to symtab processing. */ | |
569 | static struct partial_symtab *this_symtab_psymtab; | |
570 | ||
571 | /* given the start and end addresses of a compilation unit (or a csect, | |
581e13c1 | 572 | at times) process its lines and create appropriate line vectors. */ |
c906108c SS |
573 | |
574 | static void | |
fba45db2 | 575 | process_linenos (CORE_ADDR start, CORE_ADDR end) |
c906108c SS |
576 | { |
577 | int offset, ii; | |
578 | file_ptr max_offset = | |
a109c7c1 MS |
579 | ((struct coff_symfile_info *) this_symtab_psymtab->objfile |
580 | ->deprecated_sym_private)->max_lineno_offset; | |
c906108c SS |
581 | |
582 | /* subfile structure for the main compilation unit. */ | |
583 | struct subfile main_subfile; | |
584 | ||
585 | /* In the main source file, any time we see a function entry, we | |
586 | reset this variable to function's absolute starting line number. | |
587 | All the following line numbers in the function are relative to | |
588 | this, and we record absolute line numbers in record_line(). */ | |
589 | ||
590 | unsigned int main_source_baseline = 0; | |
591 | ||
592 | unsigned *firstLine; | |
593 | ||
594 | offset = | |
c5aa993b | 595 | ((struct symloc *) this_symtab_psymtab->read_symtab_private)->lineno_off; |
c906108c SS |
596 | if (offset == 0) |
597 | goto return_after_cleanup; | |
598 | ||
599 | memset (&main_subfile, '\0', sizeof (main_subfile)); | |
600 | ||
601 | if (inclIndx == 0) | |
581e13c1 MS |
602 | /* All source lines were in the main source file. None in include |
603 | files. */ | |
c906108c | 604 | |
c5aa993b JM |
605 | enter_line_range (&main_subfile, offset, 0, start, end, |
606 | &main_source_baseline); | |
c906108c SS |
607 | |
608 | else | |
609 | { | |
610 | /* There was source with line numbers in include files. */ | |
7a78ae4e ND |
611 | |
612 | int linesz = | |
613 | coff_data (this_symtab_psymtab->objfile->obfd)->local_linesz; | |
c906108c | 614 | main_source_baseline = 0; |
7a78ae4e | 615 | |
c5aa993b | 616 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c SS |
617 | { |
618 | struct subfile *tmpSubfile; | |
619 | ||
620 | /* If there is main file source before include file, enter it. */ | |
621 | if (offset < inclTable[ii].begin) | |
622 | { | |
623 | enter_line_range | |
7a78ae4e | 624 | (&main_subfile, offset, inclTable[ii].begin - linesz, |
c906108c SS |
625 | start, 0, &main_source_baseline); |
626 | } | |
627 | ||
c5933f6d JB |
628 | if (strcmp (inclTable[ii].name, last_source_file) == 0) |
629 | { | |
630 | /* The entry in the include table refers to the main source | |
581e13c1 | 631 | file. Add the lines to the main subfile. */ |
c5933f6d JB |
632 | |
633 | main_source_baseline = inclTable[ii].funStartLine; | |
634 | enter_line_range | |
635 | (&main_subfile, inclTable[ii].begin, inclTable[ii].end, | |
636 | start, 0, &main_source_baseline); | |
637 | inclTable[ii].subfile = &main_subfile; | |
638 | } | |
639 | else | |
640 | { | |
c5933f6d | 641 | /* Have a new subfile for the include file. */ |
c906108c | 642 | |
c5933f6d JB |
643 | tmpSubfile = inclTable[ii].subfile = |
644 | (struct subfile *) xmalloc (sizeof (struct subfile)); | |
c906108c | 645 | |
c5933f6d JB |
646 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
647 | firstLine = &(inclTable[ii].funStartLine); | |
648 | ||
649 | /* Enter include file's lines now. */ | |
650 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
651 | inclTable[ii].end, start, 0, firstLine); | |
652 | } | |
c906108c SS |
653 | |
654 | if (offset <= inclTable[ii].end) | |
7a78ae4e | 655 | offset = inclTable[ii].end + linesz; |
c906108c SS |
656 | } |
657 | ||
658 | /* All the include files' line have been processed at this point. Now, | |
c5aa993b | 659 | enter remaining lines of the main file, if any left. */ |
7a78ae4e | 660 | if (offset < max_offset + 1 - linesz) |
c906108c | 661 | { |
c5aa993b | 662 | enter_line_range (&main_subfile, offset, 0, start, end, |
c906108c SS |
663 | &main_source_baseline); |
664 | } | |
665 | } | |
666 | ||
667 | /* Process main file's line numbers. */ | |
668 | if (main_subfile.line_vector) | |
669 | { | |
670 | struct linetable *lineTb, *lv; | |
671 | ||
672 | lv = main_subfile.line_vector; | |
673 | ||
581e13c1 MS |
674 | /* Line numbers are not necessarily ordered. xlc compilation will |
675 | put static function to the end. */ | |
c906108c SS |
676 | |
677 | lineTb = arrange_linetable (lv); | |
678 | if (lv == lineTb) | |
679 | { | |
680 | current_subfile->line_vector = (struct linetable *) | |
681 | xrealloc (lv, (sizeof (struct linetable) | |
682 | + lv->nitems * sizeof (struct linetable_entry))); | |
683 | } | |
684 | else | |
685 | { | |
b8c9b27d | 686 | xfree (lv); |
c906108c SS |
687 | current_subfile->line_vector = lineTb; |
688 | } | |
689 | ||
c5aa993b | 690 | current_subfile->line_vector_length = |
c906108c SS |
691 | current_subfile->line_vector->nitems; |
692 | } | |
693 | ||
694 | /* Now, process included files' line numbers. */ | |
695 | ||
c5aa993b | 696 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c | 697 | { |
c5933f6d | 698 | if (inclTable[ii].subfile != ((struct subfile *) &main_subfile) |
3e43a32a MS |
699 | && (inclTable[ii].subfile)->line_vector) /* Useless if!!! |
700 | FIXMEmgo */ | |
c906108c SS |
701 | { |
702 | struct linetable *lineTb, *lv; | |
703 | ||
704 | lv = (inclTable[ii].subfile)->line_vector; | |
705 | ||
581e13c1 MS |
706 | /* Line numbers are not necessarily ordered. xlc compilation will |
707 | put static function to the end. */ | |
c906108c SS |
708 | |
709 | lineTb = arrange_linetable (lv); | |
710 | ||
711 | push_subfile (); | |
712 | ||
713 | /* For the same include file, we might want to have more than one | |
714 | subfile. This happens if we have something like: | |
715 | ||
c5aa993b JM |
716 | ...... |
717 | #include "foo.h" | |
718 | ...... | |
719 | #include "foo.h" | |
720 | ...... | |
c906108c | 721 | |
581e13c1 | 722 | while foo.h including code in it. (stupid but possible) |
c906108c SS |
723 | Since start_subfile() looks at the name and uses an |
724 | existing one if finds, we need to provide a fake name and | |
725 | fool it. */ | |
726 | ||
727 | #if 0 | |
c5aa993b | 728 | start_subfile (inclTable[ii].name, (char *) 0); |
c906108c SS |
729 | #else |
730 | { | |
731 | /* Pick a fake name that will produce the same results as this | |
732 | one when passed to deduce_language_from_filename. Kludge on | |
733 | top of kludge. */ | |
734 | char *fakename = strrchr (inclTable[ii].name, '.'); | |
a109c7c1 | 735 | |
c906108c SS |
736 | if (fakename == NULL) |
737 | fakename = " ?"; | |
c5aa993b | 738 | start_subfile (fakename, (char *) 0); |
b8c9b27d | 739 | xfree (current_subfile->name); |
c906108c | 740 | } |
c2d11a7d | 741 | current_subfile->name = xstrdup (inclTable[ii].name); |
c906108c SS |
742 | #endif |
743 | ||
744 | if (lv == lineTb) | |
745 | { | |
746 | current_subfile->line_vector = | |
747 | (struct linetable *) xrealloc | |
c5aa993b JM |
748 | (lv, (sizeof (struct linetable) |
749 | + lv->nitems * sizeof (struct linetable_entry))); | |
c906108c SS |
750 | |
751 | } | |
752 | else | |
753 | { | |
b8c9b27d | 754 | xfree (lv); |
c906108c SS |
755 | current_subfile->line_vector = lineTb; |
756 | } | |
757 | ||
c5aa993b | 758 | current_subfile->line_vector_length = |
c906108c | 759 | current_subfile->line_vector->nitems; |
c5aa993b | 760 | start_subfile (pop_subfile (), (char *) 0); |
c906108c SS |
761 | } |
762 | } | |
763 | ||
c5aa993b | 764 | return_after_cleanup: |
c906108c SS |
765 | |
766 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
767 | inclIndx = 0; | |
768 | ||
769 | /* Start with a fresh subfile structure for the next file. */ | |
770 | memset (&main_subfile, '\0', sizeof (struct subfile)); | |
771 | } | |
772 | ||
c295b2e5 | 773 | static void |
fba45db2 | 774 | aix_process_linenos (void) |
c906108c | 775 | { |
316a8b21 TG |
776 | /* There is no linenos to read if there are only dwarf info. */ |
777 | if (this_symtab_psymtab == NULL) | |
778 | return; | |
779 | ||
581e13c1 | 780 | /* Process line numbers and enter them into line vector. */ |
c906108c SS |
781 | process_linenos (last_source_start_addr, cur_src_end_addr); |
782 | } | |
783 | ||
784 | ||
785 | /* Enter a given range of lines into the line vector. | |
786 | can be called in the following two ways: | |
3e43a32a MS |
787 | enter_line_range (subfile, beginoffset, endoffset, |
788 | startaddr, 0, firstLine) or | |
789 | enter_line_range (subfile, beginoffset, 0, | |
790 | startaddr, endaddr, firstLine) | |
c906108c SS |
791 | |
792 | endoffset points to the last line table entry that we should pay | |
793 | attention to. */ | |
794 | ||
795 | static void | |
3e43a32a MS |
796 | enter_line_range (struct subfile *subfile, unsigned beginoffset, |
797 | unsigned endoffset, /* offsets to line table */ | |
fba45db2 KB |
798 | CORE_ADDR startaddr, /* offsets to line table */ |
799 | CORE_ADDR endaddr, unsigned *firstLine) | |
c906108c | 800 | { |
fbf65064 UW |
801 | struct objfile *objfile = this_symtab_psymtab->objfile; |
802 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
c906108c SS |
803 | unsigned int curoffset; |
804 | CORE_ADDR addr; | |
7a78ae4e | 805 | void *ext_lnno; |
c906108c SS |
806 | struct internal_lineno int_lnno; |
807 | unsigned int limit_offset; | |
808 | bfd *abfd; | |
7a78ae4e | 809 | int linesz; |
c906108c SS |
810 | |
811 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) | |
812 | return; | |
813 | curoffset = beginoffset; | |
814 | limit_offset = | |
fbf65064 | 815 | ((struct coff_symfile_info *) objfile->deprecated_sym_private) |
c5aa993b | 816 | ->max_lineno_offset; |
c906108c SS |
817 | |
818 | if (endoffset != 0) | |
819 | { | |
820 | if (endoffset >= limit_offset) | |
821 | { | |
23136709 | 822 | complaint (&symfile_complaints, |
e2e0b3e5 | 823 | _("Bad line table offset in C_EINCL directive")); |
c906108c SS |
824 | return; |
825 | } | |
826 | limit_offset = endoffset; | |
827 | } | |
828 | else | |
829 | limit_offset -= 1; | |
7a78ae4e | 830 | |
fbf65064 | 831 | abfd = objfile->obfd; |
7a78ae4e ND |
832 | linesz = coff_data (abfd)->local_linesz; |
833 | ext_lnno = alloca (linesz); | |
c906108c SS |
834 | |
835 | while (curoffset <= limit_offset) | |
836 | { | |
837 | bfd_seek (abfd, curoffset, SEEK_SET); | |
3a42e9d0 | 838 | bfd_bread (ext_lnno, linesz, abfd); |
7a78ae4e | 839 | bfd_coff_swap_lineno_in (abfd, ext_lnno, &int_lnno); |
c906108c SS |
840 | |
841 | /* Find the address this line represents. */ | |
842 | addr = (int_lnno.l_lnno | |
843 | ? int_lnno.l_addr.l_paddr | |
844 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
fbf65064 | 845 | addr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
846 | |
847 | if (addr < startaddr || (endaddr && addr >= endaddr)) | |
848 | return; | |
849 | ||
850 | if (int_lnno.l_lnno == 0) | |
851 | { | |
852 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
fbf65064 | 853 | record_line (subfile, 0, gdbarch_addr_bits_remove (gdbarch, addr)); |
c906108c SS |
854 | --(*firstLine); |
855 | } | |
856 | else | |
fbf65064 UW |
857 | record_line (subfile, *firstLine + int_lnno.l_lnno, |
858 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
7a78ae4e | 859 | curoffset += linesz; |
c906108c SS |
860 | } |
861 | } | |
862 | ||
863 | ||
864 | /* Save the vital information for use when closing off the current file. | |
865 | NAME is the file name the symbols came from, START_ADDR is the first | |
866 | text address for the file, and SIZE is the number of bytes of text. */ | |
867 | ||
868 | #define complete_symtab(name, start_addr) { \ | |
1b36a34b JK |
869 | last_source_file = xstrdup (name); \ |
870 | last_source_start_addr = start_addr; \ | |
c906108c SS |
871 | } |
872 | ||
873 | ||
874 | /* Refill the symbol table input buffer | |
875 | and set the variables that control fetching entries from it. | |
876 | Reports an error if no data available. | |
877 | This function can read past the end of the symbol table | |
878 | (into the string table) but this does no harm. */ | |
879 | ||
880 | /* Reading symbol table has to be fast! Keep the followings as macros, rather | |
581e13c1 | 881 | than functions. */ |
c906108c SS |
882 | |
883 | #define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, SECTION, OBJFILE) \ | |
884 | { \ | |
885 | char *namestr; \ | |
a109c7c1 MS |
886 | \ |
887 | namestr = (NAME); \ | |
888 | if (namestr[0] == '.') ++namestr; \ | |
889 | prim_record_minimal_symbol_and_info (namestr, (ADDR), (TYPE), \ | |
890 | (SECTION), (asection *)NULL, \ | |
891 | (OBJFILE)); \ | |
892 | misc_func_recorded = 1; \ | |
c906108c SS |
893 | } |
894 | ||
895 | ||
581e13c1 MS |
896 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
897 | nested. At any given time, a symbol can only be in one static block. | |
898 | This is the base address of current static block, zero if non exists. */ | |
c5aa993b | 899 | |
c906108c SS |
900 | static int static_block_base = 0; |
901 | ||
902 | /* Section number for the current static block. */ | |
903 | ||
904 | static int static_block_section = -1; | |
905 | ||
581e13c1 | 906 | /* true if space for symbol name has been allocated. */ |
c906108c SS |
907 | |
908 | static int symname_alloced = 0; | |
909 | ||
910 | /* Next symbol to read. Pointer into raw seething symbol table. */ | |
911 | ||
912 | static char *raw_symbol; | |
913 | ||
914 | /* This is the function which stabsread.c calls to get symbol | |
915 | continuations. */ | |
916 | ||
917 | static char * | |
fba45db2 | 918 | xcoff_next_symbol_text (struct objfile *objfile) |
c906108c SS |
919 | { |
920 | struct internal_syment symbol; | |
c906108c | 921 | char *retval; |
a109c7c1 | 922 | |
581e13c1 | 923 | /* FIXME: is this the same as the passed arg? */ |
13c763f4 JB |
924 | if (this_symtab_psymtab) |
925 | objfile = this_symtab_psymtab->objfile; | |
c906108c SS |
926 | |
927 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); | |
928 | if (symbol.n_zeroes) | |
929 | { | |
e2e0b3e5 | 930 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
931 | |
932 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 933 | code does something reasonable. */ |
c906108c SS |
934 | retval = ""; |
935 | } | |
936 | else if (symbol.n_sclass & 0x80) | |
937 | { | |
3e43a32a MS |
938 | retval = ((struct coff_symfile_info *) |
939 | objfile->deprecated_sym_private)->debugsec | |
c5aa993b | 940 | + symbol.n_offset; |
3e43a32a | 941 | raw_symbol += coff_data (objfile->obfd)->local_symesz; |
c906108c SS |
942 | ++symnum; |
943 | } | |
944 | else | |
945 | { | |
e2e0b3e5 | 946 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
947 | |
948 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 949 | code does something reasonable. */ |
c906108c SS |
950 | retval = ""; |
951 | } | |
952 | return retval; | |
953 | } | |
954 | ||
955 | /* Read symbols for a given partial symbol table. */ | |
956 | ||
957 | static void | |
fba45db2 | 958 | read_xcoff_symtab (struct partial_symtab *pst) |
c906108c SS |
959 | { |
960 | struct objfile *objfile = pst->objfile; | |
961 | bfd *abfd = objfile->obfd; | |
581e13c1 | 962 | char *raw_auxptr; /* Pointer to first raw aux entry for sym. */ |
a109c7c1 MS |
963 | char *strtbl = |
964 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->strtbl; | |
c906108c | 965 | char *debugsec = |
a109c7c1 | 966 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->debugsec; |
554d387d | 967 | const char *debugfmt = bfd_xcoff_is_xcoff64 (abfd) ? "XCOFF64" : "XCOFF"; |
c906108c SS |
968 | |
969 | struct internal_syment symbol[1]; | |
970 | union internal_auxent main_aux; | |
971 | struct coff_symbol cs[1]; | |
972 | CORE_ADDR file_start_addr = 0; | |
973 | CORE_ADDR file_end_addr = 0; | |
974 | ||
975 | int next_file_symnum = -1; | |
976 | unsigned int max_symnum; | |
977 | int just_started = 1; | |
978 | int depth = 0; | |
979 | int fcn_start_addr = 0; | |
980 | ||
238ae9af | 981 | struct coff_symbol fcn_stab_saved = { 0 }; |
c906108c | 982 | |
581e13c1 | 983 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
3672b1be | 984 | union internal_auxent fcn_aux_saved = main_aux; |
c906108c SS |
985 | struct context_stack *new; |
986 | ||
581e13c1 | 987 | char *filestring = " _start_ "; /* Name of the current file. */ |
c906108c | 988 | |
581e13c1 | 989 | char *last_csect_name; /* Last seen csect's name and value. */ |
c906108c SS |
990 | CORE_ADDR last_csect_val; |
991 | int last_csect_sec; | |
992 | ||
993 | this_symtab_psymtab = pst; | |
994 | ||
995 | /* Get the appropriate COFF "constants" related to the file we're | |
581e13c1 | 996 | handling. */ |
c906108c SS |
997 | local_symesz = coff_data (abfd)->local_symesz; |
998 | ||
999 | last_source_file = NULL; | |
1000 | last_csect_name = 0; | |
1001 | last_csect_val = 0; | |
1002 | ||
1003 | start_stabs (); | |
c5aa993b | 1004 | start_symtab (filestring, (char *) NULL, file_start_addr); |
7a78ae4e | 1005 | record_debugformat (debugfmt); |
c5aa993b | 1006 | symnum = ((struct symloc *) pst->read_symtab_private)->first_symnum; |
c906108c | 1007 | max_symnum = |
c5aa993b | 1008 | symnum + ((struct symloc *) pst->read_symtab_private)->numsyms; |
c906108c SS |
1009 | first_object_file_end = 0; |
1010 | ||
1011 | raw_symbol = | |
0a6ddd08 | 1012 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->symtbl |
c5aa993b | 1013 | + symnum * local_symesz; |
c906108c SS |
1014 | |
1015 | while (symnum < max_symnum) | |
1016 | { | |
c906108c SS |
1017 | QUIT; /* make this command interruptable. */ |
1018 | ||
1019 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
581e13c1 | 1020 | /* read one symbol into `cs' structure. After processing the |
c5aa993b | 1021 | whole symbol table, only string table will be kept in memory, |
581e13c1 | 1022 | symbol table and debug section of xcoff will be freed. Thus |
c5aa993b | 1023 | we can mark symbols with names in string table as |
581e13c1 | 1024 | `alloced'. */ |
c906108c SS |
1025 | { |
1026 | int ii; | |
1027 | ||
1028 | /* Swap and align the symbol into a reasonable C structure. */ | |
1029 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1030 | ||
1031 | cs->c_symnum = symnum; | |
1032 | cs->c_naux = symbol->n_numaux; | |
1033 | if (symbol->n_zeroes) | |
1034 | { | |
1035 | symname_alloced = 0; | |
1036 | /* We must use the original, unswapped, name here so the name field | |
1037 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1038 | we use the new field, it gets overwritten for each symbol. */ | |
c5aa993b | 1039 | cs->c_name = ((struct external_syment *) raw_symbol)->e.e_name; |
c906108c SS |
1040 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1041 | '\0'-terminated. */ | |
1042 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1043 | { | |
1044 | char *p; | |
a109c7c1 | 1045 | |
4a146b47 | 1046 | p = obstack_alloc (&objfile->objfile_obstack, E_SYMNMLEN + 1); |
c906108c SS |
1047 | strncpy (p, cs->c_name, E_SYMNMLEN); |
1048 | p[E_SYMNMLEN] = '\0'; | |
1049 | cs->c_name = p; | |
1050 | symname_alloced = 1; | |
1051 | } | |
1052 | } | |
1053 | else if (symbol->n_sclass & 0x80) | |
1054 | { | |
1055 | cs->c_name = debugsec + symbol->n_offset; | |
1056 | symname_alloced = 0; | |
1057 | } | |
1058 | else | |
1059 | { | |
1060 | /* in string table */ | |
c5aa993b | 1061 | cs->c_name = strtbl + (int) symbol->n_offset; |
c906108c SS |
1062 | symname_alloced = 1; |
1063 | } | |
1064 | cs->c_value = symbol->n_value; | |
1065 | cs->c_sclass = symbol->n_sclass; | |
1066 | cs->c_secnum = symbol->n_scnum; | |
c5aa993b | 1067 | cs->c_type = (unsigned) symbol->n_type; |
c906108c | 1068 | |
7a78ae4e | 1069 | raw_symbol += local_symesz; |
c906108c SS |
1070 | ++symnum; |
1071 | ||
1072 | /* Save addr of first aux entry. */ | |
1073 | raw_auxptr = raw_symbol; | |
1074 | ||
1075 | /* Skip all the auxents associated with this symbol. */ | |
1076 | for (ii = symbol->n_numaux; ii; --ii) | |
1077 | { | |
1078 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1079 | ++symnum; | |
1080 | } | |
1081 | } | |
1082 | ||
581e13c1 | 1083 | /* if symbol name starts with ".$" or "$", ignore it. */ |
c906108c SS |
1084 | if (cs->c_name[0] == '$' |
1085 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1086 | continue; | |
1087 | ||
1088 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
1089 | { | |
1090 | if (last_source_file) | |
1091 | { | |
3e43a32a MS |
1092 | pst->symtab = end_symtab (cur_src_end_addr, objfile, |
1093 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1094 | end_stabs (); |
1095 | } | |
1096 | ||
1097 | start_stabs (); | |
c5aa993b | 1098 | start_symtab ("_globals_", (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1099 | record_debugformat (debugfmt); |
c906108c | 1100 | cur_src_end_addr = first_object_file_end; |
581e13c1 | 1101 | /* Done with all files, everything from here on is globals. */ |
c906108c SS |
1102 | } |
1103 | ||
c906108c SS |
1104 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) |
1105 | && cs->c_naux == 1) | |
1106 | { | |
1107 | /* Dealing with a symbol with a csect entry. */ | |
1108 | ||
1109 | #define CSECT(PP) ((PP)->x_csect) | |
1110 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1111 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1112 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1113 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1114 | ||
1115 | /* Convert the auxent to something we can access. */ | |
1116 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1117 | 0, cs->c_naux, &main_aux); | |
1118 | ||
1119 | switch (CSECT_SMTYP (&main_aux)) | |
1120 | { | |
1121 | ||
1122 | case XTY_ER: | |
1123 | /* Ignore all external references. */ | |
1124 | continue; | |
1125 | ||
1126 | case XTY_SD: | |
1127 | /* A section description. */ | |
1128 | { | |
1129 | switch (CSECT_SCLAS (&main_aux)) | |
1130 | { | |
1131 | ||
1132 | case XMC_PR: | |
1133 | { | |
1134 | ||
1135 | /* A program csect is seen. We have to allocate one | |
c5aa993b JM |
1136 | symbol table for each program csect. Normally gdb |
1137 | prefers one symtab for each source file. In case | |
1138 | of AIX, one source file might include more than one | |
1139 | [PR] csect, and they don't have to be adjacent in | |
581e13c1 | 1140 | terms of the space they occupy in memory. Thus, one |
c5aa993b JM |
1141 | single source file might get fragmented in the |
1142 | memory and gdb's file start and end address | |
1143 | approach does not work! GCC (and I think xlc) seem | |
1144 | to put all the code in the unnamed program csect. */ | |
c906108c SS |
1145 | |
1146 | if (last_csect_name) | |
1147 | { | |
1148 | complete_symtab (filestring, file_start_addr); | |
1149 | cur_src_end_addr = file_end_addr; | |
3e43a32a MS |
1150 | end_symtab (file_end_addr, objfile, |
1151 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1152 | end_stabs (); |
1153 | start_stabs (); | |
1154 | /* Give all csects for this source file the same | |
1155 | name. */ | |
c5aa993b | 1156 | start_symtab (filestring, NULL, (CORE_ADDR) 0); |
7a78ae4e | 1157 | record_debugformat (debugfmt); |
c906108c SS |
1158 | } |
1159 | ||
1160 | /* If this is the very first csect seen, | |
581e13c1 | 1161 | basically `__start'. */ |
c906108c SS |
1162 | if (just_started) |
1163 | { | |
1164 | first_object_file_end | |
1165 | = cs->c_value + CSECT_LEN (&main_aux); | |
1166 | just_started = 0; | |
1167 | } | |
1168 | ||
1169 | file_start_addr = | |
1170 | cs->c_value + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1171 | SECT_OFF_TEXT (objfile)); |
c906108c SS |
1172 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); |
1173 | ||
977adac5 ND |
1174 | if (cs->c_name && (cs->c_name[0] == '.' |
1175 | || cs->c_name[0] == '@')) | |
c906108c SS |
1176 | { |
1177 | last_csect_name = cs->c_name; | |
1178 | last_csect_val = cs->c_value; | |
3e43a32a MS |
1179 | last_csect_sec = secnum_to_section (cs->c_secnum, |
1180 | objfile); | |
c906108c SS |
1181 | } |
1182 | } | |
1183 | continue; | |
1184 | ||
1185 | /* All other symbols are put into the minimal symbol | |
1186 | table only. */ | |
1187 | ||
1188 | case XMC_RW: | |
1189 | continue; | |
1190 | ||
1191 | case XMC_TC0: | |
1192 | continue; | |
1193 | ||
1194 | case XMC_TC: | |
1195 | continue; | |
1196 | ||
1197 | default: | |
1198 | /* Ignore the symbol. */ | |
1199 | continue; | |
1200 | } | |
1201 | } | |
1202 | break; | |
1203 | ||
1204 | case XTY_LD: | |
1205 | ||
1206 | switch (CSECT_SCLAS (&main_aux)) | |
1207 | { | |
1208 | case XMC_PR: | |
581e13c1 | 1209 | /* a function entry point. */ |
c906108c SS |
1210 | function_entry_point: |
1211 | ||
1212 | fcn_start_addr = cs->c_value; | |
1213 | ||
1214 | /* save the function header info, which will be used | |
581e13c1 | 1215 | when `.bf' is seen. */ |
c906108c SS |
1216 | fcn_cs_saved = *cs; |
1217 | fcn_aux_saved = main_aux; | |
1218 | continue; | |
1219 | ||
1220 | case XMC_GL: | |
581e13c1 | 1221 | /* shared library function trampoline code entry point. */ |
c906108c SS |
1222 | continue; |
1223 | ||
1224 | case XMC_DS: | |
1225 | /* The symbols often have the same names as debug symbols for | |
1226 | functions, and confuse lookup_symbol. */ | |
1227 | continue; | |
1228 | ||
1229 | default: | |
1230 | /* xlc puts each variable in a separate csect, so we get | |
1231 | an XTY_SD for each variable. But gcc puts several | |
1232 | variables in a csect, so that each variable only gets | |
581e13c1 | 1233 | an XTY_LD. This will typically be XMC_RW; I suspect |
c906108c SS |
1234 | XMC_RO and XMC_BS might be possible too. |
1235 | These variables are put in the minimal symbol table | |
1236 | only. */ | |
1237 | continue; | |
1238 | } | |
1239 | break; | |
1240 | ||
1241 | case XTY_CM: | |
1242 | /* Common symbols are put into the minimal symbol table only. */ | |
1243 | continue; | |
1244 | ||
1245 | default: | |
1246 | break; | |
1247 | } | |
1248 | } | |
1249 | ||
977adac5 ND |
1250 | /* If explicitly specified as a function, treat is as one. This check |
1251 | evaluates to true for @FIX* bigtoc CSECT symbols, so it must occur | |
1252 | after the above CSECT check. */ | |
1253 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
1254 | { | |
1255 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1256 | 0, cs->c_naux, &main_aux); | |
1257 | goto function_entry_point; | |
1258 | } | |
1259 | ||
c906108c SS |
1260 | switch (cs->c_sclass) |
1261 | { | |
c906108c SS |
1262 | case C_FILE: |
1263 | ||
1264 | /* c_value field contains symnum of next .file entry in table | |
581e13c1 | 1265 | or symnum of first global after last .file. */ |
c906108c SS |
1266 | |
1267 | next_file_symnum = cs->c_value; | |
1268 | ||
1269 | /* Complete symbol table for last object file containing | |
581e13c1 | 1270 | debugging information. */ |
c906108c SS |
1271 | |
1272 | /* Whether or not there was a csect in the previous file, we | |
1273 | have to call `end_stabs' and `start_stabs' to reset | |
1274 | type_vector, line_vector, etc. structures. */ | |
1275 | ||
1276 | complete_symtab (filestring, file_start_addr); | |
1277 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1278 | end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1279 | end_stabs (); |
1280 | ||
3e43a32a MS |
1281 | /* XCOFF, according to the AIX 3.2 documentation, puts the |
1282 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
1283 | do things the standard COFF way and put it in the auxent. | |
1284 | We use the auxent if the symbol is ".file" and an auxent | |
1285 | exists, otherwise use the symbol itself. Simple | |
1286 | enough. */ | |
c906108c SS |
1287 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) |
1288 | { | |
1289 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1290 | 0, cs->c_naux, &main_aux); | |
1291 | filestring = coff_getfilename (&main_aux, objfile); | |
1292 | } | |
1293 | else | |
1294 | filestring = cs->c_name; | |
1295 | ||
1296 | start_stabs (); | |
c5aa993b | 1297 | start_symtab (filestring, (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1298 | record_debugformat (debugfmt); |
c906108c SS |
1299 | last_csect_name = 0; |
1300 | ||
581e13c1 | 1301 | /* reset file start and end addresses. A compilation unit |
3e43a32a | 1302 | with no text (only data) should have zero file |
581e13c1 | 1303 | boundaries. */ |
c906108c SS |
1304 | file_start_addr = file_end_addr = 0; |
1305 | break; | |
1306 | ||
1307 | case C_FUN: | |
1308 | fcn_stab_saved = *cs; | |
1309 | break; | |
1310 | ||
1311 | case C_FCN: | |
7ecb6532 | 1312 | if (strcmp (cs->c_name, ".bf") == 0) |
c906108c SS |
1313 | { |
1314 | CORE_ADDR off = ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1315 | SECT_OFF_TEXT (objfile)); |
a109c7c1 | 1316 | |
c906108c SS |
1317 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1318 | 0, cs->c_naux, &main_aux); | |
1319 | ||
1320 | within_function = 1; | |
1321 | ||
1322 | new = push_context (0, fcn_start_addr + off); | |
1323 | ||
c5aa993b | 1324 | new->name = define_symbol |
c906108c SS |
1325 | (fcn_cs_saved.c_value + off, |
1326 | fcn_stab_saved.c_name, 0, 0, objfile); | |
1327 | if (new->name != NULL) | |
b8fbeb18 | 1328 | SYMBOL_SECTION (new->name) = SECT_OFF_TEXT (objfile); |
c906108c | 1329 | } |
7ecb6532 | 1330 | else if (strcmp (cs->c_name, ".ef") == 0) |
c906108c | 1331 | { |
c906108c SS |
1332 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1333 | 0, cs->c_naux, &main_aux); | |
1334 | ||
1335 | /* The value of .ef is the address of epilogue code; | |
c5aa993b | 1336 | not useful for gdb. */ |
c906108c | 1337 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
c5aa993b | 1338 | contains number of lines to '}' */ |
c906108c SS |
1339 | |
1340 | if (context_stack_depth <= 0) | |
581e13c1 | 1341 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1342 | ef_complaint (cs->c_symnum); |
c906108c SS |
1343 | within_function = 0; |
1344 | break; | |
1345 | } | |
1346 | new = pop_context (); | |
1347 | /* Stack must be empty now. */ | |
1348 | if (context_stack_depth > 0 || new == NULL) | |
1349 | { | |
23136709 | 1350 | ef_complaint (cs->c_symnum); |
c906108c SS |
1351 | within_function = 0; |
1352 | break; | |
1353 | } | |
1354 | ||
1355 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1356 | new->start_addr, | |
1357 | (fcn_cs_saved.c_value | |
1358 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1359 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1360 | SECT_OFF_TEXT (objfile))), |
c906108c SS |
1361 | objfile); |
1362 | within_function = 0; | |
1363 | } | |
1364 | break; | |
1365 | ||
1366 | case C_BSTAT: | |
1367 | /* Begin static block. */ | |
1368 | { | |
1369 | struct internal_syment symbol; | |
1370 | ||
1371 | read_symbol (&symbol, cs->c_value); | |
1372 | static_block_base = symbol.n_value; | |
1373 | static_block_section = | |
1374 | secnum_to_section (symbol.n_scnum, objfile); | |
1375 | } | |
1376 | break; | |
1377 | ||
1378 | case C_ESTAT: | |
1379 | /* End of static block. */ | |
1380 | static_block_base = 0; | |
1381 | static_block_section = -1; | |
1382 | break; | |
1383 | ||
1384 | case C_ARG: | |
1385 | case C_REGPARM: | |
1386 | case C_REG: | |
1387 | case C_TPDEF: | |
1388 | case C_STRTAG: | |
1389 | case C_UNTAG: | |
1390 | case C_ENTAG: | |
1391 | { | |
3e43a32a MS |
1392 | complaint (&symfile_complaints, |
1393 | _("Unrecognized storage class %d."), | |
23136709 | 1394 | cs->c_sclass); |
c906108c SS |
1395 | } |
1396 | break; | |
1397 | ||
1398 | case C_LABEL: | |
1399 | case C_NULL: | |
1400 | /* Ignore these. */ | |
1401 | break; | |
1402 | ||
1403 | case C_HIDEXT: | |
1404 | case C_STAT: | |
1405 | break; | |
1406 | ||
1407 | case C_BINCL: | |
1408 | /* beginning of include file */ | |
1409 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
581e13c1 MS |
1410 | order. Thus, when wee see them, we might not know enough info |
1411 | to process them. Thus, we'll be saving them into a table | |
1412 | (inclTable) and postpone their processing. */ | |
c906108c SS |
1413 | |
1414 | record_include_begin (cs); | |
1415 | break; | |
1416 | ||
1417 | case C_EINCL: | |
1418 | /* End of include file. */ | |
1419 | /* See the comment after case C_BINCL. */ | |
1420 | record_include_end (cs); | |
1421 | break; | |
1422 | ||
1423 | case C_BLOCK: | |
7ecb6532 | 1424 | if (strcmp (cs->c_name, ".bb") == 0) |
c906108c SS |
1425 | { |
1426 | depth++; | |
1427 | new = push_context (depth, | |
1428 | (cs->c_value | |
1429 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1430 | SECT_OFF_TEXT (objfile)))); |
c906108c | 1431 | } |
7ecb6532 | 1432 | else if (strcmp (cs->c_name, ".eb") == 0) |
c906108c SS |
1433 | { |
1434 | if (context_stack_depth <= 0) | |
581e13c1 | 1435 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1436 | eb_complaint (cs->c_symnum); |
c906108c SS |
1437 | break; |
1438 | } | |
1439 | new = pop_context (); | |
1440 | if (depth-- != new->depth) | |
1441 | { | |
23136709 | 1442 | eb_complaint (cs->c_symnum); |
c906108c SS |
1443 | break; |
1444 | } | |
1445 | if (local_symbols && context_stack_depth > 0) | |
1446 | { | |
1447 | /* Make a block for the local symbols within. */ | |
1448 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1449 | new->start_addr, | |
1450 | (cs->c_value | |
1451 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1452 | SECT_OFF_TEXT (objfile))), |
c906108c SS |
1453 | objfile); |
1454 | } | |
1455 | local_symbols = new->locals; | |
1456 | } | |
1457 | break; | |
1458 | ||
1459 | default: | |
1460 | process_xcoff_symbol (cs, objfile); | |
1461 | break; | |
1462 | } | |
1463 | } | |
1464 | ||
1465 | if (last_source_file) | |
1466 | { | |
1467 | struct symtab *s; | |
1468 | ||
1469 | complete_symtab (filestring, file_start_addr); | |
1470 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1471 | s = end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1472 | /* When reading symbols for the last C_FILE of the objfile, try |
1473 | to make sure that we set pst->symtab to the symtab for the | |
1474 | file, not to the _globals_ symtab. I'm not sure whether this | |
1475 | actually works right or when/if it comes up. */ | |
1476 | if (pst->symtab == NULL) | |
1477 | pst->symtab = s; | |
1478 | end_stabs (); | |
1479 | } | |
1480 | } | |
1481 | ||
1482 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
1483 | (SYMBOL2) = (struct symbol *) \ | |
4a146b47 | 1484 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); \ |
c906108c | 1485 | *(SYMBOL2) = *(SYMBOL1); |
c5aa993b JM |
1486 | |
1487 | ||
c906108c | 1488 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ |
3e43a32a MS |
1489 | ((ALLOCED) ? (NAME) : obsavestring ((NAME), strlen (NAME), \ |
1490 | &objfile->objfile_obstack)) | |
c906108c SS |
1491 | |
1492 | ||
581e13c1 | 1493 | /* process one xcoff symbol. */ |
c906108c SS |
1494 | |
1495 | static struct symbol * | |
aa1ee363 | 1496 | process_xcoff_symbol (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
1497 | { |
1498 | struct symbol onesymbol; | |
52f0bd74 | 1499 | struct symbol *sym = &onesymbol; |
c906108c SS |
1500 | struct symbol *sym2 = NULL; |
1501 | char *name, *pp; | |
1502 | ||
1503 | int sec; | |
1504 | CORE_ADDR off; | |
1505 | ||
1506 | if (cs->c_secnum < 0) | |
1507 | { | |
1508 | /* The value is a register number, offset within a frame, etc., | |
c5aa993b | 1509 | and does not get relocated. */ |
c906108c SS |
1510 | off = 0; |
1511 | sec = -1; | |
1512 | } | |
1513 | else | |
1514 | { | |
1515 | sec = secnum_to_section (cs->c_secnum, objfile); | |
1516 | off = ANOFFSET (objfile->section_offsets, sec); | |
1517 | } | |
1518 | ||
1519 | name = cs->c_name; | |
1520 | if (name[0] == '.') | |
1521 | ++name; | |
1522 | ||
1523 | memset (sym, '\0', sizeof (struct symbol)); | |
1524 | ||
1525 | /* default assumptions */ | |
7a78ae4e | 1526 | SYMBOL_VALUE_ADDRESS (sym) = cs->c_value + off; |
176620f1 | 1527 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1528 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); |
1529 | ||
1530 | if (ISFCN (cs->c_type)) | |
1531 | { | |
1532 | /* At this point, we don't know the type of the function. This | |
c5aa993b JM |
1533 | will be patched with the type from its stab entry later on in |
1534 | patch_block_stabs (), unless the file was compiled without -g. */ | |
c906108c | 1535 | |
3567439c | 1536 | SYMBOL_SET_LINKAGE_NAME (sym, SYMNAME_ALLOC (name, symname_alloced)); |
46bf5051 | 1537 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_text_symbol; |
c906108c SS |
1538 | |
1539 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1540 | SYMBOL_DUP (sym, sym2); | |
1541 | ||
1542 | if (cs->c_sclass == C_EXT) | |
1543 | add_symbol_to_list (sym2, &global_symbols); | |
1544 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1545 | add_symbol_to_list (sym2, &file_symbols); | |
1546 | } | |
1547 | else | |
1548 | { | |
581e13c1 | 1549 | /* In case we can't figure out the type, provide default. */ |
46bf5051 | 1550 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
1551 | |
1552 | switch (cs->c_sclass) | |
1553 | { | |
1554 | #if 0 | |
c5aa993b JM |
1555 | /* The values of functions and global symbols are now resolved |
1556 | via the global_sym_chain in stabsread.c. */ | |
c906108c SS |
1557 | case C_FUN: |
1558 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1559 | add_stab_to_list (name, &global_stabs); | |
1560 | else | |
1561 | add_stab_to_list (name, &file_stabs); | |
1562 | break; | |
1563 | ||
1564 | case C_GSYM: | |
1565 | add_stab_to_list (name, &global_stabs); | |
1566 | break; | |
1567 | #endif | |
1568 | ||
1569 | case C_BCOMM: | |
1570 | common_block_start (cs->c_name, objfile); | |
1571 | break; | |
1572 | ||
1573 | case C_ECOMM: | |
1574 | common_block_end (objfile); | |
1575 | break; | |
1576 | ||
1577 | default: | |
e2e0b3e5 | 1578 | complaint (&symfile_complaints, _("Unexpected storage class: %d"), |
23136709 | 1579 | cs->c_sclass); |
c906108c SS |
1580 | /* FALLTHROUGH */ |
1581 | ||
1582 | case C_DECL: | |
1583 | case C_PSYM: | |
1584 | case C_RPSYM: | |
1585 | case C_ECOML: | |
1586 | case C_LSYM: | |
1587 | case C_RSYM: | |
1588 | case C_GSYM: | |
1589 | ||
1590 | { | |
1591 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1592 | if (sym != NULL) | |
1593 | { | |
1594 | SYMBOL_SECTION (sym) = sec; | |
1595 | } | |
1596 | return sym; | |
1597 | } | |
1598 | ||
1599 | case C_STSYM: | |
1600 | ||
1601 | /* For xlc (not GCC), the 'V' symbol descriptor is used for | |
1602 | all statics and we need to distinguish file-scope versus | |
1603 | function-scope using within_function. We do this by | |
1604 | changing the string we pass to define_symbol to use 'S' | |
1605 | where we need to, which is not necessarily super-clean, | |
1606 | but seems workable enough. */ | |
1607 | ||
9b13a2db PM |
1608 | if (*name == ':') |
1609 | return NULL; | |
1610 | ||
ed4b0e6a | 1611 | pp = strchr (name, ':'); |
9b13a2db | 1612 | if (pp == NULL) |
c906108c SS |
1613 | return NULL; |
1614 | ||
1615 | ++pp; | |
1616 | if (*pp == 'V' && !within_function) | |
1617 | *pp = 'S'; | |
1618 | sym = define_symbol ((cs->c_value | |
1619 | + ANOFFSET (objfile->section_offsets, | |
1620 | static_block_section)), | |
1621 | cs->c_name, 0, 0, objfile); | |
1622 | if (sym != NULL) | |
1623 | { | |
7a78ae4e | 1624 | SYMBOL_VALUE_ADDRESS (sym) += static_block_base; |
c906108c SS |
1625 | SYMBOL_SECTION (sym) = static_block_section; |
1626 | } | |
1627 | return sym; | |
1628 | ||
1629 | } | |
1630 | } | |
1631 | return sym2; | |
1632 | } | |
1633 | ||
1634 | /* Extract the file name from the aux entry of a C_FILE symbol. | |
1635 | Result is in static storage and is only good for temporary use. */ | |
1636 | ||
1637 | static char * | |
fba45db2 | 1638 | coff_getfilename (union internal_auxent *aux_entry, struct objfile *objfile) |
c906108c SS |
1639 | { |
1640 | static char buffer[BUFSIZ]; | |
1641 | ||
1642 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
3e43a32a MS |
1643 | strcpy (buffer, ((struct coff_symfile_info *) |
1644 | objfile->deprecated_sym_private)->strtbl | |
c906108c SS |
1645 | + aux_entry->x_file.x_n.x_offset); |
1646 | else | |
1647 | { | |
1648 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1649 | buffer[FILNMLEN] = '\0'; | |
1650 | } | |
1651 | return (buffer); | |
1652 | } | |
1653 | ||
1654 | /* Set *SYMBOL to symbol number symno in symtbl. */ | |
1655 | static void | |
fba45db2 | 1656 | read_symbol (struct internal_syment *symbol, int symno) |
c906108c | 1657 | { |
3e43a32a MS |
1658 | int nsyms |
1659 | = ((struct coff_symfile_info *) | |
1660 | this_symtab_psymtab->objfile->deprecated_sym_private)->symtbl_num_syms; | |
1661 | char *stbl = ((struct coff_symfile_info *) | |
1662 | this_symtab_psymtab->objfile->deprecated_sym_private)->symtbl; | |
a109c7c1 | 1663 | |
c906108c SS |
1664 | if (symno < 0 || symno >= nsyms) |
1665 | { | |
e2e0b3e5 | 1666 | complaint (&symfile_complaints, _("Invalid symbol offset")); |
c906108c SS |
1667 | symbol->n_value = 0; |
1668 | symbol->n_scnum = -1; | |
1669 | return; | |
1670 | } | |
1671 | bfd_coff_swap_sym_in (this_symtab_psymtab->objfile->obfd, | |
c5aa993b | 1672 | stbl + (symno * local_symesz), |
c906108c SS |
1673 | symbol); |
1674 | } | |
c5aa993b | 1675 | |
c906108c SS |
1676 | /* Get value corresponding to symbol number symno in symtbl. */ |
1677 | ||
470d5666 | 1678 | static CORE_ADDR |
fba45db2 | 1679 | read_symbol_nvalue (int symno) |
c906108c SS |
1680 | { |
1681 | struct internal_syment symbol[1]; | |
1682 | ||
1683 | read_symbol (symbol, symno); | |
c5aa993b | 1684 | return symbol->n_value; |
c906108c SS |
1685 | } |
1686 | ||
1687 | ||
1688 | /* Find the address of the function corresponding to symno, where | |
1689 | symno is the symbol pointed to by the linetable. */ | |
1690 | ||
1691 | static int | |
fba45db2 | 1692 | read_symbol_lineno (int symno) |
c906108c | 1693 | { |
7a78ae4e | 1694 | struct objfile *objfile = this_symtab_psymtab->objfile; |
7af35dad | 1695 | int xcoff64 = bfd_xcoff_is_xcoff64 (objfile->obfd); |
7a78ae4e ND |
1696 | |
1697 | struct coff_symfile_info *info = | |
0a6ddd08 | 1698 | (struct coff_symfile_info *)objfile->deprecated_sym_private; |
7a78ae4e ND |
1699 | int nsyms = info->symtbl_num_syms; |
1700 | char *stbl = info->symtbl; | |
1701 | char *strtbl = info->strtbl; | |
1702 | ||
c906108c SS |
1703 | struct internal_syment symbol[1]; |
1704 | union internal_auxent main_aux[1]; | |
1705 | ||
1706 | if (symno < 0) | |
1707 | { | |
23136709 | 1708 | bf_notfound_complaint (); |
c906108c SS |
1709 | return 0; |
1710 | } | |
1711 | ||
1712 | /* Note that just searching for a short distance (e.g. 50 symbols) | |
1713 | is not enough, at least in the following case. | |
1714 | ||
1715 | .extern foo | |
1716 | [many .stabx entries] | |
1717 | [a few functions, referring to foo] | |
1718 | .globl foo | |
1719 | .bf | |
1720 | ||
1721 | What happens here is that the assembler moves the .stabx entries | |
1722 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1723 | all the stabx entries. See PR gdb/2222. */ | |
1724 | ||
1725 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1726 | If I understand things correctly it would need to be done only for | |
1727 | the duration of a single psymtab to symtab conversion. */ | |
1728 | while (symno < nsyms) | |
1729 | { | |
1730 | bfd_coff_swap_sym_in (symfile_bfd, | |
1731 | stbl + (symno * local_symesz), symbol); | |
7a78ae4e ND |
1732 | if (symbol->n_sclass == C_FCN) |
1733 | { | |
1734 | char *name = xcoff64 ? strtbl + symbol->n_offset : symbol->n_name; | |
a109c7c1 | 1735 | |
7ecb6532 | 1736 | if (strcmp (name, ".bf") == 0) |
7a78ae4e ND |
1737 | goto gotit; |
1738 | } | |
c906108c SS |
1739 | symno += symbol->n_numaux + 1; |
1740 | } | |
1741 | ||
23136709 | 1742 | bf_notfound_complaint (); |
c906108c SS |
1743 | return 0; |
1744 | ||
1745 | gotit: | |
581e13c1 | 1746 | /* Take aux entry and return its lineno. */ |
c906108c | 1747 | symno++; |
7a78ae4e | 1748 | bfd_coff_swap_aux_in (objfile->obfd, stbl + symno * local_symesz, |
c906108c SS |
1749 | symbol->n_type, symbol->n_sclass, |
1750 | 0, symbol->n_numaux, main_aux); | |
1751 | ||
1752 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1753 | } | |
1754 | ||
581e13c1 | 1755 | /* Support for line number handling. */ |
c906108c SS |
1756 | |
1757 | /* This function is called for every section; it finds the outer limits | |
1758 | * of the line table (minimum and maximum file offset) so that the | |
1759 | * mainline code can read the whole thing for efficiency. | |
1760 | */ | |
1761 | static void | |
7be0c536 | 1762 | find_linenos (struct bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
1763 | { |
1764 | struct coff_symfile_info *info; | |
1765 | int size, count; | |
1766 | file_ptr offset, maxoff; | |
1767 | ||
1768 | count = asect->lineno_count; | |
1769 | ||
7ecb6532 | 1770 | if (strcmp (asect->name, ".text") != 0 || count == 0) |
c906108c SS |
1771 | return; |
1772 | ||
1773 | size = count * coff_data (abfd)->local_linesz; | |
c5aa993b | 1774 | info = (struct coff_symfile_info *) vpinfo; |
c906108c SS |
1775 | offset = asect->line_filepos; |
1776 | maxoff = offset + size; | |
1777 | ||
1778 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1779 | info->min_lineno_offset = offset; | |
1780 | ||
1781 | if (maxoff > info->max_lineno_offset) | |
1782 | info->max_lineno_offset = maxoff; | |
1783 | } | |
1784 | \f | |
a14ed312 | 1785 | static void xcoff_psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c SS |
1786 | |
1787 | static void | |
fba45db2 | 1788 | xcoff_psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c SS |
1789 | { |
1790 | struct cleanup *old_chain; | |
1791 | int i; | |
c5aa993b | 1792 | |
c906108c SS |
1793 | if (!pst) |
1794 | return; | |
1795 | ||
1796 | if (pst->readin) | |
1797 | { | |
1798 | fprintf_unfiltered | |
1799 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1800 | pst->filename); | |
1801 | return; | |
1802 | } | |
1803 | ||
581e13c1 | 1804 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
1805 | for (i = 0; i < pst->number_of_dependencies; i++) |
1806 | if (!pst->dependencies[i]->readin) | |
1807 | { | |
1808 | /* Inform about additional files that need to be read in. */ | |
1809 | if (info_verbose) | |
1810 | { | |
1811 | fputs_filtered (" ", gdb_stdout); | |
1812 | wrap_here (""); | |
1813 | fputs_filtered ("and ", gdb_stdout); | |
1814 | wrap_here (""); | |
1815 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1816 | wrap_here (""); /* Flush output */ |
c906108c SS |
1817 | gdb_flush (gdb_stdout); |
1818 | } | |
1819 | xcoff_psymtab_to_symtab_1 (pst->dependencies[i]); | |
1820 | } | |
1821 | ||
c5aa993b | 1822 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0) |
c906108c SS |
1823 | { |
1824 | /* Init stuff necessary for reading in symbols. */ | |
1825 | stabsread_init (); | |
1826 | buildsym_init (); | |
a0b3c4fd | 1827 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c SS |
1828 | |
1829 | read_xcoff_symtab (pst); | |
c906108c SS |
1830 | |
1831 | do_cleanups (old_chain); | |
1832 | } | |
1833 | ||
1834 | pst->readin = 1; | |
1835 | } | |
1836 | ||
a14ed312 | 1837 | static void xcoff_psymtab_to_symtab (struct partial_symtab *); |
c906108c SS |
1838 | |
1839 | /* Read in all of the symbols for a given psymtab for real. | |
1840 | Be verbose about it if the user wants that. */ | |
1841 | ||
1842 | static void | |
fba45db2 | 1843 | xcoff_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
1844 | { |
1845 | bfd *sym_bfd; | |
1846 | ||
1847 | if (!pst) | |
1848 | return; | |
1849 | ||
1850 | if (pst->readin) | |
1851 | { | |
1852 | fprintf_unfiltered | |
1853 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1854 | pst->filename); | |
1855 | return; | |
1856 | } | |
1857 | ||
c5aa993b | 1858 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0 |
c906108c SS |
1859 | || pst->number_of_dependencies) |
1860 | { | |
1861 | /* Print the message now, before reading the string table, | |
c5aa993b | 1862 | to avoid disconcerting pauses. */ |
c906108c SS |
1863 | if (info_verbose) |
1864 | { | |
1865 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1866 | gdb_flush (gdb_stdout); | |
1867 | } | |
1868 | ||
1869 | sym_bfd = pst->objfile->obfd; | |
1870 | ||
1871 | next_symbol_text_func = xcoff_next_symbol_text; | |
1872 | ||
1873 | xcoff_psymtab_to_symtab_1 (pst); | |
1874 | ||
1875 | /* Match with global symbols. This only needs to be done once, | |
1876 | after all of the symtabs and dependencies have been read in. */ | |
1877 | scan_file_globals (pst->objfile); | |
1878 | ||
1879 | /* Finish up the debug error message. */ | |
1880 | if (info_verbose) | |
1881 | printf_filtered ("done.\n"); | |
1882 | } | |
1883 | } | |
1884 | \f | |
1885 | static void | |
fba45db2 | 1886 | xcoff_new_init (struct objfile *objfile) |
c906108c SS |
1887 | { |
1888 | stabsread_new_init (); | |
1889 | buildsym_new_init (); | |
1890 | } | |
1891 | ||
1892 | /* Do initialization in preparation for reading symbols from OBJFILE. | |
c5aa993b | 1893 | |
c906108c SS |
1894 | We will only be called if this is an XCOFF or XCOFF-like file. |
1895 | BFD handles figuring out the format of the file, and code in symfile.c | |
1896 | uses BFD's determination to vector to us. */ | |
1897 | ||
1898 | static void | |
fba45db2 | 1899 | xcoff_symfile_init (struct objfile *objfile) |
c906108c | 1900 | { |
581e13c1 | 1901 | /* Allocate struct to keep track of the symfile. */ |
3e43a32a MS |
1902 | objfile->deprecated_sym_private |
1903 | = xmalloc (sizeof (struct coff_symfile_info)); | |
c906108c SS |
1904 | |
1905 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1906 | find this causes a significant slowdown in gdb then we could | |
1907 | set it in the debug symbol readers only when necessary. */ | |
1908 | objfile->flags |= OBJF_REORDERED; | |
1909 | ||
1910 | init_entry_point_info (objfile); | |
1911 | } | |
1912 | ||
1913 | /* Perform any local cleanups required when we are done with a particular | |
1914 | objfile. I.E, we are in the process of discarding all symbol information | |
1915 | for an objfile, freeing up all memory held for it, and unlinking the | |
581e13c1 | 1916 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
1917 | |
1918 | static void | |
fba45db2 | 1919 | xcoff_symfile_finish (struct objfile *objfile) |
c906108c | 1920 | { |
0a6ddd08 | 1921 | if (objfile->deprecated_sym_private != NULL) |
c906108c | 1922 | { |
0a6ddd08 | 1923 | xfree (objfile->deprecated_sym_private); |
c906108c SS |
1924 | } |
1925 | ||
1926 | /* Start with a fresh include table for the next objfile. */ | |
1927 | if (inclTable) | |
1928 | { | |
b8c9b27d | 1929 | xfree (inclTable); |
c906108c SS |
1930 | inclTable = NULL; |
1931 | } | |
1932 | inclIndx = inclLength = inclDepth = 0; | |
316a8b21 TG |
1933 | |
1934 | dwarf2_free_objfile (objfile); | |
c906108c SS |
1935 | } |
1936 | ||
1937 | ||
1938 | static void | |
fba45db2 | 1939 | init_stringtab (bfd *abfd, file_ptr offset, struct objfile *objfile) |
c906108c SS |
1940 | { |
1941 | long length; | |
1942 | int val; | |
1943 | unsigned char lengthbuf[4]; | |
1944 | char *strtbl; | |
1945 | ||
3e43a32a MS |
1946 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->strtbl |
1947 | = NULL; | |
c906108c SS |
1948 | |
1949 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) | |
8a3fe4f8 | 1950 | error (_("cannot seek to string table in %s: %s"), |
c906108c SS |
1951 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1952 | ||
3a42e9d0 | 1953 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c SS |
1954 | length = bfd_h_get_32 (abfd, lengthbuf); |
1955 | ||
1956 | /* If no string table is needed, then the file may end immediately | |
1957 | after the symbols. Just return with `strtbl' set to NULL. */ | |
1958 | ||
1959 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1960 | return; | |
1961 | ||
581e13c1 MS |
1962 | /* Allocate string table from objfile_obstack. We will need this table |
1963 | as long as we have its symbol table around. */ | |
c906108c | 1964 | |
4a146b47 | 1965 | strtbl = (char *) obstack_alloc (&objfile->objfile_obstack, length); |
3e43a32a MS |
1966 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->strtbl |
1967 | = strtbl; | |
c906108c SS |
1968 | |
1969 | /* Copy length buffer, the first byte is usually zero and is | |
1970 | used for stabs with a name length of zero. */ | |
1971 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
1972 | if (length == sizeof lengthbuf) | |
1973 | return; | |
1974 | ||
3a42e9d0 | 1975 | val = bfd_bread (strtbl + sizeof lengthbuf, length - sizeof lengthbuf, abfd); |
c906108c SS |
1976 | |
1977 | if (val != length - sizeof lengthbuf) | |
8a3fe4f8 | 1978 | error (_("cannot read string table from %s: %s"), |
c906108c SS |
1979 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1980 | if (strtbl[length - 1] != '\0') | |
3e43a32a MS |
1981 | error (_("bad symbol file: string table " |
1982 | "does not end with null character")); | |
c906108c SS |
1983 | |
1984 | return; | |
1985 | } | |
1986 | \f | |
1987 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
1988 | have seen one, it is the offset in the line numbers of the line numbers | |
1989 | for the psymtab. */ | |
1990 | static unsigned int first_fun_line_offset; | |
1991 | ||
1992 | static struct partial_symtab *xcoff_start_psymtab | |
a14ed312 KB |
1993 | (struct objfile *, char *, int, |
1994 | struct partial_symbol **, struct partial_symbol **); | |
c906108c SS |
1995 | |
1996 | /* Allocate and partially fill a partial symtab. It will be | |
1997 | completely filled at the end of the symbol list. | |
1998 | ||
1999 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2000 | is the address relative to which its symbols are (incremental) or 0 | |
581e13c1 | 2001 | (normal). */ |
c906108c SS |
2002 | |
2003 | static struct partial_symtab * | |
fba45db2 KB |
2004 | xcoff_start_psymtab (struct objfile *objfile, char *filename, int first_symnum, |
2005 | struct partial_symbol **global_syms, | |
2006 | struct partial_symbol **static_syms) | |
c906108c SS |
2007 | { |
2008 | struct partial_symtab *result = | |
a109c7c1 MS |
2009 | start_psymtab_common (objfile, objfile->section_offsets, |
2010 | filename, | |
2011 | /* We fill in textlow later. */ | |
2012 | 0, | |
2013 | global_syms, static_syms); | |
c906108c | 2014 | |
e38df1d0 TT |
2015 | result->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2016 | sizeof (struct symloc)); | |
c5aa993b | 2017 | ((struct symloc *) result->read_symtab_private)->first_symnum = first_symnum; |
c906108c SS |
2018 | result->read_symtab = xcoff_psymtab_to_symtab; |
2019 | ||
581e13c1 | 2020 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
2021 | psymtab_language = deduce_language_from_filename (filename); |
2022 | ||
2023 | return result; | |
2024 | } | |
2025 | ||
2026 | static struct partial_symtab *xcoff_end_psymtab | |
a14ed312 KB |
2027 | (struct partial_symtab *, char **, int, int, |
2028 | struct partial_symtab **, int, int); | |
c906108c | 2029 | |
581e13c1 | 2030 | /* Close off the current usage of PST. |
c906108c SS |
2031 | Returns PST, or NULL if the partial symtab was empty and thrown away. |
2032 | ||
2033 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). | |
2034 | ||
2035 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES | |
2036 | are the information for includes and dependencies. */ | |
2037 | ||
2038 | static struct partial_symtab * | |
fba45db2 KB |
2039 | xcoff_end_psymtab (struct partial_symtab *pst, char **include_list, |
2040 | int num_includes, int capping_symbol_number, | |
2041 | struct partial_symtab **dependency_list, | |
2042 | int number_dependencies, int textlow_not_set) | |
c906108c SS |
2043 | { |
2044 | int i; | |
c5aa993b | 2045 | struct objfile *objfile = pst->objfile; |
c906108c SS |
2046 | |
2047 | if (capping_symbol_number != -1) | |
c5aa993b | 2048 | ((struct symloc *) pst->read_symtab_private)->numsyms = |
c906108c | 2049 | capping_symbol_number |
c5aa993b JM |
2050 | - ((struct symloc *) pst->read_symtab_private)->first_symnum; |
2051 | ((struct symloc *) pst->read_symtab_private)->lineno_off = | |
c906108c SS |
2052 | first_fun_line_offset; |
2053 | first_fun_line_offset = 0; | |
3e43a32a MS |
2054 | pst->n_global_syms = objfile->global_psymbols.next |
2055 | - (objfile->global_psymbols.list + pst->globals_offset); | |
2056 | pst->n_static_syms = objfile->static_psymbols.next | |
2057 | - (objfile->static_psymbols.list + pst->statics_offset); | |
c906108c SS |
2058 | |
2059 | pst->number_of_dependencies = number_dependencies; | |
2060 | if (number_dependencies) | |
2061 | { | |
2062 | pst->dependencies = (struct partial_symtab **) | |
8b92e4d5 | 2063 | obstack_alloc (&objfile->objfile_obstack, |
c5aa993b | 2064 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c | 2065 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2066 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2067 | } |
2068 | else | |
2069 | pst->dependencies = 0; | |
2070 | ||
2071 | for (i = 0; i < num_includes; i++) | |
2072 | { | |
2073 | struct partial_symtab *subpst = | |
a109c7c1 | 2074 | allocate_psymtab (include_list[i], objfile); |
c906108c SS |
2075 | |
2076 | subpst->section_offsets = pst->section_offsets; | |
e38df1d0 TT |
2077 | subpst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2078 | sizeof (struct symloc)); | |
c5aa993b JM |
2079 | ((struct symloc *) subpst->read_symtab_private)->first_symnum = 0; |
2080 | ((struct symloc *) subpst->read_symtab_private)->numsyms = 0; | |
c906108c SS |
2081 | subpst->textlow = 0; |
2082 | subpst->texthigh = 0; | |
2083 | ||
2084 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2085 | shared by the entire set of include files. FIXME-someday. */ |
c906108c | 2086 | subpst->dependencies = (struct partial_symtab **) |
8b92e4d5 | 2087 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2088 | sizeof (struct partial_symtab *)); |
2089 | subpst->dependencies[0] = pst; | |
2090 | subpst->number_of_dependencies = 1; | |
2091 | ||
2092 | subpst->globals_offset = | |
2093 | subpst->n_global_syms = | |
c5aa993b JM |
2094 | subpst->statics_offset = |
2095 | subpst->n_static_syms = 0; | |
c906108c SS |
2096 | |
2097 | subpst->readin = 0; | |
2098 | subpst->symtab = 0; | |
2099 | subpst->read_symtab = pst->read_symtab; | |
2100 | } | |
2101 | ||
2102 | sort_pst_symbols (pst); | |
2103 | ||
c906108c SS |
2104 | if (num_includes == 0 |
2105 | && number_dependencies == 0 | |
2106 | && pst->n_global_syms == 0 | |
2107 | && pst->n_static_syms == 0) | |
2108 | { | |
2109 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2110 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2111 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b | 2112 | any symbols in them. There can be a lot of them. */ |
c906108c SS |
2113 | |
2114 | discard_psymtab (pst); | |
2115 | ||
2116 | /* Indicate that psymtab was thrown away. */ | |
c5aa993b | 2117 | pst = (struct partial_symtab *) NULL; |
c906108c SS |
2118 | } |
2119 | return pst; | |
2120 | } | |
2121 | ||
a14ed312 KB |
2122 | static void swap_sym (struct internal_syment *, |
2123 | union internal_auxent *, char **, char **, | |
2124 | unsigned int *, struct objfile *); | |
c906108c SS |
2125 | |
2126 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in | |
2127 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2128 | the symbol and its auxents. */ | |
2129 | ||
2130 | static void | |
fba45db2 KB |
2131 | swap_sym (struct internal_syment *symbol, union internal_auxent *aux, |
2132 | char **name, char **raw, unsigned int *symnump, | |
2133 | struct objfile *objfile) | |
c906108c SS |
2134 | { |
2135 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2136 | if (symbol->n_zeroes) | |
2137 | { | |
2138 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
c5aa993b | 2139 | '\0'-terminated. */ |
c906108c SS |
2140 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') |
2141 | { | |
2142 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2143 | into the minimal symbols. */ | |
2144 | char *p; | |
a109c7c1 | 2145 | |
8b92e4d5 | 2146 | p = obstack_alloc (&objfile->objfile_obstack, E_SYMNMLEN + 1); |
c906108c SS |
2147 | strncpy (p, symbol->n_name, E_SYMNMLEN); |
2148 | p[E_SYMNMLEN] = '\0'; | |
2149 | *name = p; | |
2150 | } | |
2151 | else | |
2152 | /* Point to the unswapped name as that persists as long as the | |
2153 | objfile does. */ | |
c5aa993b | 2154 | *name = ((struct external_syment *) *raw)->e.e_name; |
c906108c SS |
2155 | } |
2156 | else if (symbol->n_sclass & 0x80) | |
2157 | { | |
3e43a32a MS |
2158 | *name = ((struct coff_symfile_info *) |
2159 | objfile->deprecated_sym_private)->debugsec + symbol->n_offset; | |
c906108c SS |
2160 | } |
2161 | else | |
2162 | { | |
3e43a32a MS |
2163 | *name = ((struct coff_symfile_info *) |
2164 | objfile->deprecated_sym_private)->strtbl + symbol->n_offset; | |
c906108c SS |
2165 | } |
2166 | ++*symnump; | |
2167 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2168 | if (symbol->n_numaux > 0) | |
2169 | { | |
2170 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2171 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2172 | ||
2173 | *symnump += symbol->n_numaux; | |
2174 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2175 | } | |
2176 | } | |
2177 | ||
23136709 KB |
2178 | static void |
2179 | function_outside_compilation_unit_complaint (const char *arg1) | |
2180 | { | |
2181 | complaint (&symfile_complaints, | |
3e43a32a MS |
2182 | _("function `%s' appears to be defined " |
2183 | "outside of all compilation units"), | |
23136709 KB |
2184 | arg1); |
2185 | } | |
2186 | ||
c906108c | 2187 | static void |
fba45db2 | 2188 | scan_xcoff_symtab (struct objfile *objfile) |
c906108c | 2189 | { |
40c58d95 | 2190 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
581e13c1 | 2191 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
c906108c SS |
2192 | char *filestring = NULL; |
2193 | ||
2194 | char *namestring; | |
2195 | int past_first_source_file = 0; | |
2196 | bfd *abfd; | |
2197 | asection *bfd_sect; | |
2198 | unsigned int nsyms; | |
2199 | ||
2200 | /* Current partial symtab */ | |
2201 | struct partial_symtab *pst; | |
2202 | ||
581e13c1 | 2203 | /* List of current psymtab's include files. */ |
c906108c SS |
2204 | char **psymtab_include_list; |
2205 | int includes_allocated; | |
2206 | int includes_used; | |
2207 | ||
581e13c1 | 2208 | /* Index within current psymtab dependency list. */ |
c906108c SS |
2209 | struct partial_symtab **dependency_list; |
2210 | int dependencies_used, dependencies_allocated; | |
2211 | ||
2212 | char *sraw_symbol; | |
2213 | struct internal_syment symbol; | |
96baa820 | 2214 | union internal_auxent main_aux[5]; |
c906108c SS |
2215 | unsigned int ssymnum; |
2216 | ||
581e13c1 | 2217 | char *last_csect_name = NULL; /* Last seen csect's name and value. */ |
c906108c SS |
2218 | CORE_ADDR last_csect_val = 0; |
2219 | int last_csect_sec = 0; | |
581e13c1 | 2220 | int misc_func_recorded = 0; /* true if any misc. function. */ |
c906108c SS |
2221 | int textlow_not_set = 1; |
2222 | ||
2223 | pst = (struct partial_symtab *) 0; | |
2224 | ||
2225 | includes_allocated = 30; | |
2226 | includes_used = 0; | |
2227 | psymtab_include_list = (char **) alloca (includes_allocated * | |
2228 | sizeof (char *)); | |
2229 | ||
2230 | dependencies_allocated = 30; | |
2231 | dependencies_used = 0; | |
2232 | dependency_list = | |
2233 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2234 | sizeof (struct partial_symtab *)); | |
2235 | ||
2236 | last_source_file = NULL; | |
2237 | ||
2238 | abfd = objfile->obfd; | |
13c763f4 | 2239 | next_symbol_text_func = xcoff_next_symbol_text; |
c906108c | 2240 | |
3e43a32a MS |
2241 | sraw_symbol = ((struct coff_symfile_info *) |
2242 | objfile->deprecated_sym_private)->symtbl; | |
2243 | nsyms = ((struct coff_symfile_info *) | |
2244 | objfile->deprecated_sym_private)->symtbl_num_syms; | |
c906108c SS |
2245 | ssymnum = 0; |
2246 | while (ssymnum < nsyms) | |
2247 | { | |
7a78ae4e | 2248 | int sclass; |
c906108c SS |
2249 | |
2250 | QUIT; | |
2251 | ||
7a78ae4e ND |
2252 | bfd_coff_swap_sym_in (abfd, sraw_symbol, &symbol); |
2253 | sclass = symbol.n_sclass; | |
2254 | ||
c906108c SS |
2255 | switch (sclass) |
2256 | { | |
2257 | case C_EXT: | |
2258 | case C_HIDEXT: | |
2259 | { | |
2260 | /* The CSECT auxent--always the last auxent. */ | |
2261 | union internal_auxent csect_aux; | |
2262 | unsigned int symnum_before = ssymnum; | |
2263 | ||
96baa820 | 2264 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2265 | &ssymnum, objfile); |
2266 | if (symbol.n_numaux > 1) | |
2267 | { | |
2268 | bfd_coff_swap_aux_in | |
2269 | (objfile->obfd, | |
c5aa993b | 2270 | sraw_symbol - coff_data (abfd)->local_symesz, |
c906108c SS |
2271 | symbol.n_type, |
2272 | symbol.n_sclass, | |
2273 | symbol.n_numaux - 1, | |
2274 | symbol.n_numaux, | |
2275 | &csect_aux); | |
2276 | } | |
2277 | else | |
96baa820 | 2278 | csect_aux = main_aux[0]; |
c906108c | 2279 | |
977adac5 ND |
2280 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2281 | if (namestring[0] == '$' | |
c906108c SS |
2282 | || (namestring[0] == '.' && namestring[1] == '$')) |
2283 | break; | |
2284 | ||
2285 | switch (csect_aux.x_csect.x_smtyp & 0x7) | |
2286 | { | |
2287 | case XTY_SD: | |
2288 | switch (csect_aux.x_csect.x_smclas) | |
2289 | { | |
2290 | case XMC_PR: | |
2291 | if (last_csect_name) | |
2292 | { | |
2293 | /* If no misc. function recorded in the last | |
581e13c1 | 2294 | seen csect, enter it as a function. This |
c906108c SS |
2295 | will take care of functions like strcmp() |
2296 | compiled by xlc. */ | |
2297 | ||
2298 | if (!misc_func_recorded) | |
2299 | { | |
2300 | RECORD_MINIMAL_SYMBOL | |
2301 | (last_csect_name, last_csect_val, | |
2302 | mst_text, last_csect_sec, | |
2303 | objfile); | |
2304 | } | |
2305 | ||
2306 | if (pst != NULL) | |
2307 | { | |
2308 | /* We have to allocate one psymtab for | |
2309 | each program csect, because their text | |
2310 | sections need not be adjacent. */ | |
2311 | xcoff_end_psymtab | |
2312 | (pst, psymtab_include_list, includes_used, | |
2313 | symnum_before, dependency_list, | |
2314 | dependencies_used, textlow_not_set); | |
2315 | includes_used = 0; | |
2316 | dependencies_used = 0; | |
2317 | /* Give all psymtabs for this source file the same | |
2318 | name. */ | |
2319 | pst = xcoff_start_psymtab | |
d4f3574e | 2320 | (objfile, |
c906108c SS |
2321 | filestring, |
2322 | symnum_before, | |
2323 | objfile->global_psymbols.next, | |
2324 | objfile->static_psymbols.next); | |
2325 | } | |
2326 | } | |
977adac5 ND |
2327 | /* Activate the misc_func_recorded mechanism for |
2328 | compiler- and linker-generated CSECTs like ".strcmp" | |
2329 | and "@FIX1". */ | |
2330 | if (namestring && (namestring[0] == '.' | |
2331 | || namestring[0] == '@')) | |
c906108c SS |
2332 | { |
2333 | last_csect_name = namestring; | |
2334 | last_csect_val = symbol.n_value; | |
2335 | last_csect_sec = | |
2336 | secnum_to_section (symbol.n_scnum, objfile); | |
2337 | } | |
2338 | if (pst != NULL) | |
2339 | { | |
2340 | CORE_ADDR highval = | |
a109c7c1 MS |
2341 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; |
2342 | ||
c906108c SS |
2343 | if (highval > pst->texthigh) |
2344 | pst->texthigh = highval; | |
2345 | if (pst->textlow == 0 || symbol.n_value < pst->textlow) | |
2346 | pst->textlow = symbol.n_value; | |
2347 | } | |
2348 | misc_func_recorded = 0; | |
2349 | break; | |
2350 | ||
2351 | case XMC_RW: | |
6904b546 | 2352 | case XMC_TD: |
c906108c SS |
2353 | /* Data variables are recorded in the minimal symbol |
2354 | table, except for section symbols. */ | |
2355 | if (*namestring != '.') | |
2356 | prim_record_minimal_symbol_and_info | |
2357 | (namestring, symbol.n_value, | |
2358 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
b887350f | 2359 | secnum_to_section (symbol.n_scnum, objfile), |
c906108c SS |
2360 | NULL, objfile); |
2361 | break; | |
2362 | ||
2363 | case XMC_TC0: | |
2364 | if (toc_offset) | |
8a3fe4f8 | 2365 | warning (_("More than one XMC_TC0 symbol found.")); |
c906108c SS |
2366 | toc_offset = symbol.n_value; |
2367 | ||
3e43a32a MS |
2368 | /* Make TOC offset relative to start address of |
2369 | section. */ | |
c906108c SS |
2370 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); |
2371 | if (bfd_sect) | |
2372 | toc_offset -= bfd_section_vma (objfile->obfd, bfd_sect); | |
2373 | break; | |
2374 | ||
2375 | case XMC_TC: | |
2376 | /* These symbols tell us where the TOC entry for a | |
2377 | variable is, not the variable itself. */ | |
2378 | break; | |
2379 | ||
2380 | default: | |
2381 | break; | |
2382 | } | |
2383 | break; | |
2384 | ||
2385 | case XTY_LD: | |
2386 | switch (csect_aux.x_csect.x_smclas) | |
2387 | { | |
2388 | case XMC_PR: | |
2389 | /* A function entry point. */ | |
2390 | ||
2391 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2392 | first_fun_line_offset = | |
96baa820 | 2393 | main_aux[0].x_sym.x_fcnary.x_fcn.x_lnnoptr; |
c906108c SS |
2394 | RECORD_MINIMAL_SYMBOL |
2395 | (namestring, symbol.n_value, | |
2396 | sclass == C_HIDEXT ? mst_file_text : mst_text, | |
2397 | secnum_to_section (symbol.n_scnum, objfile), | |
2398 | objfile); | |
2399 | break; | |
2400 | ||
2401 | case XMC_GL: | |
2402 | /* shared library function trampoline code entry | |
581e13c1 | 2403 | point. */ |
c906108c SS |
2404 | |
2405 | /* record trampoline code entries as | |
2406 | mst_solib_trampoline symbol. When we lookup mst | |
2407 | symbols, we will choose mst_text over | |
581e13c1 | 2408 | mst_solib_trampoline. */ |
c906108c SS |
2409 | RECORD_MINIMAL_SYMBOL |
2410 | (namestring, symbol.n_value, | |
2411 | mst_solib_trampoline, | |
2412 | secnum_to_section (symbol.n_scnum, objfile), | |
2413 | objfile); | |
2414 | break; | |
2415 | ||
2416 | case XMC_DS: | |
2417 | /* The symbols often have the same names as | |
2418 | debug symbols for functions, and confuse | |
2419 | lookup_symbol. */ | |
2420 | break; | |
2421 | ||
2422 | default: | |
2423 | ||
2424 | /* xlc puts each variable in a separate csect, | |
2425 | so we get an XTY_SD for each variable. But | |
2426 | gcc puts several variables in a csect, so | |
2427 | that each variable only gets an XTY_LD. We | |
2428 | still need to record them. This will | |
2429 | typically be XMC_RW; I suspect XMC_RO and | |
2430 | XMC_BS might be possible too. */ | |
2431 | if (*namestring != '.') | |
2432 | prim_record_minimal_symbol_and_info | |
2433 | (namestring, symbol.n_value, | |
2434 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
b887350f | 2435 | secnum_to_section (symbol.n_scnum, objfile), |
c906108c SS |
2436 | NULL, objfile); |
2437 | break; | |
2438 | } | |
2439 | break; | |
2440 | ||
2441 | case XTY_CM: | |
2442 | switch (csect_aux.x_csect.x_smclas) | |
2443 | { | |
2444 | case XMC_RW: | |
2445 | case XMC_BS: | |
2446 | /* Common variables are recorded in the minimal symbol | |
2447 | table, except for section symbols. */ | |
2448 | if (*namestring != '.') | |
2449 | prim_record_minimal_symbol_and_info | |
2450 | (namestring, symbol.n_value, | |
2451 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, | |
b887350f | 2452 | secnum_to_section (symbol.n_scnum, objfile), |
c906108c SS |
2453 | NULL, objfile); |
2454 | break; | |
2455 | } | |
2456 | break; | |
2457 | ||
2458 | default: | |
2459 | break; | |
2460 | } | |
2461 | } | |
2462 | break; | |
2463 | case C_FILE: | |
2464 | { | |
2465 | unsigned int symnum_before; | |
2466 | ||
2467 | symnum_before = ssymnum; | |
96baa820 | 2468 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2469 | &ssymnum, objfile); |
2470 | ||
2471 | /* See if the last csect needs to be recorded. */ | |
2472 | ||
2473 | if (last_csect_name && !misc_func_recorded) | |
2474 | { | |
c906108c SS |
2475 | /* If no misc. function recorded in the last seen csect, enter |
2476 | it as a function. This will take care of functions like | |
2477 | strcmp() compiled by xlc. */ | |
2478 | ||
2479 | RECORD_MINIMAL_SYMBOL | |
2480 | (last_csect_name, last_csect_val, | |
2481 | mst_text, last_csect_sec, objfile); | |
2482 | } | |
2483 | ||
2484 | if (pst) | |
2485 | { | |
2486 | xcoff_end_psymtab (pst, psymtab_include_list, includes_used, | |
2487 | symnum_before, dependency_list, | |
2488 | dependencies_used, textlow_not_set); | |
2489 | includes_used = 0; | |
2490 | dependencies_used = 0; | |
2491 | } | |
2492 | first_fun_line_offset = 0; | |
2493 | ||
2494 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2495 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2496 | do things the standard COFF way and put it in the auxent. | |
2497 | We use the auxent if the symbol is ".file" and an auxent | |
2498 | exists, otherwise use the symbol itself. */ | |
2499 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2500 | { | |
96baa820 | 2501 | filestring = coff_getfilename (&main_aux[0], objfile); |
c906108c SS |
2502 | } |
2503 | else | |
2504 | filestring = namestring; | |
2505 | ||
d4f3574e | 2506 | pst = xcoff_start_psymtab (objfile, |
c906108c SS |
2507 | filestring, |
2508 | symnum_before, | |
2509 | objfile->global_psymbols.next, | |
2510 | objfile->static_psymbols.next); | |
2511 | last_csect_name = NULL; | |
2512 | } | |
2513 | break; | |
2514 | ||
2515 | default: | |
2516 | { | |
23136709 | 2517 | complaint (&symfile_complaints, |
3e43a32a MS |
2518 | _("Storage class %d not recognized during scan"), |
2519 | sclass); | |
c906108c SS |
2520 | } |
2521 | /* FALLTHROUGH */ | |
2522 | ||
2523 | /* C_FCN is .bf and .ef symbols. I think it is sufficient | |
2524 | to handle only the C_FUN and C_EXT. */ | |
2525 | case C_FCN: | |
2526 | ||
2527 | case C_BSTAT: | |
2528 | case C_ESTAT: | |
2529 | case C_ARG: | |
2530 | case C_REGPARM: | |
2531 | case C_REG: | |
2532 | case C_TPDEF: | |
2533 | case C_STRTAG: | |
2534 | case C_UNTAG: | |
2535 | case C_ENTAG: | |
2536 | case C_LABEL: | |
2537 | case C_NULL: | |
2538 | ||
2539 | /* C_EINCL means we are switching back to the main file. But there | |
2540 | is no reason to care; the only thing we want to know about | |
2541 | includes is the names of all the included (.h) files. */ | |
2542 | case C_EINCL: | |
2543 | ||
2544 | case C_BLOCK: | |
2545 | ||
2546 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2547 | used instead. */ | |
2548 | case C_STAT: | |
2549 | ||
2550 | /* I don't think the name of the common block (as opposed to the | |
2551 | variables within it) is something which is user visible | |
2552 | currently. */ | |
2553 | case C_BCOMM: | |
2554 | case C_ECOMM: | |
2555 | ||
2556 | case C_PSYM: | |
2557 | case C_RPSYM: | |
2558 | ||
2559 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2560 | so C_LSYM would appear to be only for locals. */ | |
2561 | case C_LSYM: | |
2562 | ||
2563 | case C_AUTO: | |
2564 | case C_RSYM: | |
2565 | { | |
2566 | /* We probably could save a few instructions by assuming that | |
2567 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
7a78ae4e | 2568 | int naux1 = symbol.n_numaux + 1; |
a109c7c1 | 2569 | |
c906108c | 2570 | ssymnum += naux1; |
7a78ae4e | 2571 | sraw_symbol += bfd_coff_symesz (abfd) * naux1; |
c906108c SS |
2572 | } |
2573 | break; | |
2574 | ||
2575 | case C_BINCL: | |
d5d0a62f | 2576 | { |
581e13c1 | 2577 | /* Mark down an include file in the current psymtab. */ |
d5d0a62f | 2578 | enum language tmp_language; |
a109c7c1 | 2579 | |
d5d0a62f EZ |
2580 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2581 | &ssymnum, objfile); | |
2582 | ||
2583 | tmp_language = deduce_language_from_filename (namestring); | |
2584 | ||
2585 | /* Only change the psymtab's language if we've learned | |
2586 | something useful (eg. tmp_language is not language_unknown). | |
2587 | In addition, to match what start_subfile does, never change | |
2588 | from C++ to C. */ | |
2589 | if (tmp_language != language_unknown | |
2590 | && (tmp_language != language_c | |
2591 | || psymtab_language != language_cplus)) | |
2592 | psymtab_language = tmp_language; | |
2593 | ||
2594 | /* In C++, one may expect the same filename to come round many | |
2595 | times, when code is coming alternately from the main file | |
581e13c1 | 2596 | and from inline functions in other files. So I check to see |
d5d0a62f EZ |
2597 | if this is a file we've seen before -- either the main |
2598 | source file, or a previously included file. | |
2599 | ||
2600 | This seems to be a lot of time to be spending on N_SOL, but | |
2601 | things like "break c-exp.y:435" need to work (I | |
2602 | suppose the psymtab_include_list could be hashed or put | |
2603 | in a binary tree, if profiling shows this is a major hog). */ | |
7ecb6532 | 2604 | if (pst && strcmp (namestring, pst->filename) == 0) |
d5d0a62f | 2605 | continue; |
a109c7c1 | 2606 | |
d5d0a62f | 2607 | { |
aa1ee363 | 2608 | int i; |
a109c7c1 | 2609 | |
d5d0a62f | 2610 | for (i = 0; i < includes_used; i++) |
7ecb6532 | 2611 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
d5d0a62f EZ |
2612 | { |
2613 | i = -1; | |
2614 | break; | |
2615 | } | |
2616 | if (i == -1) | |
2617 | continue; | |
2618 | } | |
2619 | psymtab_include_list[includes_used++] = namestring; | |
2620 | if (includes_used >= includes_allocated) | |
2621 | { | |
2622 | char **orig = psymtab_include_list; | |
c906108c | 2623 | |
d5d0a62f EZ |
2624 | psymtab_include_list = (char **) |
2625 | alloca ((includes_allocated *= 2) * | |
2626 | sizeof (char *)); | |
4efb68b1 | 2627 | memcpy (psymtab_include_list, orig, |
d5d0a62f EZ |
2628 | includes_used * sizeof (char *)); |
2629 | } | |
2630 | continue; | |
2631 | } | |
c906108c SS |
2632 | case C_FUN: |
2633 | /* The value of the C_FUN is not the address of the function (it | |
2634 | appears to be the address before linking), but as long as it | |
2635 | is smaller than the actual address, then find_pc_partial_function | |
2636 | will use the minimal symbols instead. I hope. */ | |
2637 | ||
2638 | case C_GSYM: | |
2639 | case C_ECOML: | |
2640 | case C_DECL: | |
2641 | case C_STSYM: | |
d5d0a62f | 2642 | { |
d5d0a62f | 2643 | char *p; |
a109c7c1 | 2644 | |
d5d0a62f EZ |
2645 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2646 | &ssymnum, objfile); | |
2647 | ||
ed4b0e6a | 2648 | p = strchr (namestring, ':'); |
d5d0a62f EZ |
2649 | if (!p) |
2650 | continue; /* Not a debugging symbol. */ | |
2651 | ||
2652 | /* Main processing section for debugging symbols which | |
2653 | the initial read through the symbol tables needs to worry | |
2654 | about. If we reach this point, the symbol which we are | |
2655 | considering is definitely one we are interested in. | |
2656 | p must also contain the (valid) index into the namestring | |
2657 | which indicates the debugging type symbol. */ | |
2658 | ||
2659 | switch (p[1]) | |
2660 | { | |
2661 | case 'S': | |
3e43a32a MS |
2662 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2663 | SECT_OFF_DATA (objfile)); | |
149ad273 | 2664 | |
5e2b427d | 2665 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 2666 | namestring = gdbarch_static_transform_name |
5e2b427d | 2667 | (gdbarch, namestring); |
149ad273 | 2668 | |
04a679b8 | 2669 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2670 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f EZ |
2671 | &objfile->static_psymbols, |
2672 | 0, symbol.n_value, | |
2673 | psymtab_language, objfile); | |
2674 | continue; | |
2675 | ||
2676 | case 'G': | |
3e43a32a MS |
2677 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2678 | SECT_OFF_DATA (objfile)); | |
d5d0a62f | 2679 | /* The addresses in these entries are reported to be |
581e13c1 | 2680 | wrong. See the code that reads 'G's for symtabs. */ |
04a679b8 | 2681 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2682 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f EZ |
2683 | &objfile->global_psymbols, |
2684 | 0, symbol.n_value, | |
2685 | psymtab_language, objfile); | |
2686 | continue; | |
2687 | ||
2688 | case 'T': | |
2689 | /* When a 'T' entry is defining an anonymous enum, it | |
2690 | may have a name which is the empty string, or a | |
2691 | single space. Since they're not really defining a | |
2692 | symbol, those shouldn't go in the partial symbol | |
2693 | table. We do pick up the elements of such enums at | |
2694 | 'check_enum:', below. */ | |
2695 | if (p >= namestring + 2 | |
2696 | || (p == namestring + 1 | |
2697 | && namestring[0] != ' ')) | |
2698 | { | |
04a679b8 | 2699 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2700 | STRUCT_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2701 | &objfile->static_psymbols, |
2702 | symbol.n_value, 0, | |
2703 | psymtab_language, objfile); | |
2704 | if (p[2] == 't') | |
2705 | { | |
2706 | /* Also a typedef with the same name. */ | |
04a679b8 | 2707 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2708 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2709 | &objfile->static_psymbols, |
2710 | symbol.n_value, 0, | |
2711 | psymtab_language, objfile); | |
2712 | p += 1; | |
2713 | } | |
d5d0a62f EZ |
2714 | } |
2715 | goto check_enum; | |
2716 | ||
2717 | case 't': | |
581e13c1 | 2718 | if (p != namestring) /* a name is there, not just :T... */ |
d5d0a62f | 2719 | { |
04a679b8 | 2720 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2721 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2722 | &objfile->static_psymbols, |
2723 | symbol.n_value, 0, | |
2724 | psymtab_language, objfile); | |
2725 | } | |
2726 | check_enum: | |
2727 | /* If this is an enumerated type, we need to | |
2728 | add all the enum constants to the partial symbol | |
2729 | table. This does not cover enums without names, e.g. | |
2730 | "enum {a, b} c;" in C, but fortunately those are | |
2731 | rare. There is no way for GDB to find those from the | |
2732 | enum type without spending too much time on it. Thus | |
2733 | to solve this problem, the compiler needs to put out the | |
2734 | enum in a nameless type. GCC2 does this. */ | |
2735 | ||
2736 | /* We are looking for something of the form | |
2737 | <name> ":" ("t" | "T") [<number> "="] "e" | |
2738 | {<constant> ":" <value> ","} ";". */ | |
2739 | ||
2740 | /* Skip over the colon and the 't' or 'T'. */ | |
2741 | p += 2; | |
2742 | /* This type may be given a number. Also, numbers can come | |
2743 | in pairs like (0,26). Skip over it. */ | |
2744 | while ((*p >= '0' && *p <= '9') | |
2745 | || *p == '(' || *p == ',' || *p == ')' | |
2746 | || *p == '=') | |
2747 | p++; | |
2748 | ||
2749 | if (*p++ == 'e') | |
2750 | { | |
3e43a32a MS |
2751 | /* The aix4 compiler emits extra crud before the |
2752 | members. */ | |
d5d0a62f EZ |
2753 | if (*p == '-') |
2754 | { | |
2755 | /* Skip over the type (?). */ | |
2756 | while (*p != ':') | |
2757 | p++; | |
2758 | ||
2759 | /* Skip over the colon. */ | |
2760 | p++; | |
2761 | } | |
2762 | ||
2763 | /* We have found an enumerated type. */ | |
2764 | /* According to comments in read_enum_type | |
2765 | a comma could end it instead of a semicolon. | |
2766 | I don't know where that happens. | |
2767 | Accept either. */ | |
2768 | while (*p && *p != ';' && *p != ',') | |
2769 | { | |
2770 | char *q; | |
2771 | ||
2772 | /* Check for and handle cretinous dbx symbol name | |
2773 | continuation! */ | |
2774 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
2775 | p = next_symbol_text (objfile); | |
2776 | ||
2777 | /* Point to the character after the name | |
2778 | of the enum constant. */ | |
2779 | for (q = p; *q && *q != ':'; q++) | |
2780 | ; | |
2781 | /* Note that the value doesn't matter for | |
2782 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 2783 | add_psymbol_to_list (p, q - p, 1, |
176620f1 | 2784 | VAR_DOMAIN, LOC_CONST, |
d5d0a62f EZ |
2785 | &objfile->static_psymbols, 0, |
2786 | 0, psymtab_language, objfile); | |
2787 | /* Point past the name. */ | |
2788 | p = q; | |
2789 | /* Skip over the value. */ | |
2790 | while (*p && *p != ',') | |
2791 | p++; | |
2792 | /* Advance past the comma. */ | |
2793 | if (*p) | |
2794 | p++; | |
2795 | } | |
2796 | } | |
2797 | continue; | |
2798 | ||
2799 | case 'c': | |
2800 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 2801 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2802 | VAR_DOMAIN, LOC_CONST, |
d5d0a62f EZ |
2803 | &objfile->static_psymbols, symbol.n_value, |
2804 | 0, psymtab_language, objfile); | |
2805 | continue; | |
2806 | ||
2807 | case 'f': | |
2808 | if (! pst) | |
2809 | { | |
2810 | int name_len = p - namestring; | |
2811 | char *name = xmalloc (name_len + 1); | |
a109c7c1 | 2812 | |
d5d0a62f EZ |
2813 | memcpy (name, namestring, name_len); |
2814 | name[name_len] = '\0'; | |
23136709 | 2815 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2816 | xfree (name); |
2817 | } | |
3e43a32a MS |
2818 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2819 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2820 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2821 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f EZ |
2822 | &objfile->static_psymbols, |
2823 | 0, symbol.n_value, | |
2824 | psymtab_language, objfile); | |
2825 | continue; | |
2826 | ||
2827 | /* Global functions were ignored here, but now they | |
2828 | are put into the global psymtab like one would expect. | |
2829 | They're also in the minimal symbol table. */ | |
2830 | case 'F': | |
2831 | if (! pst) | |
2832 | { | |
2833 | int name_len = p - namestring; | |
2834 | char *name = xmalloc (name_len + 1); | |
a109c7c1 | 2835 | |
d5d0a62f EZ |
2836 | memcpy (name, namestring, name_len); |
2837 | name[name_len] = '\0'; | |
23136709 | 2838 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2839 | xfree (name); |
2840 | } | |
9f1d5432 PH |
2841 | |
2842 | /* We need only the minimal symbols for these | |
581e13c1 | 2843 | loader-generated definitions. Keeping the global |
9f1d5432 | 2844 | symbols leads to "in psymbols but not in symbols" |
581e13c1 | 2845 | errors. */ |
9f1d5432 PH |
2846 | if (strncmp (namestring, "@FIX", 4) == 0) |
2847 | continue; | |
2848 | ||
3e43a32a MS |
2849 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2850 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2851 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2852 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f EZ |
2853 | &objfile->global_psymbols, |
2854 | 0, symbol.n_value, | |
2855 | psymtab_language, objfile); | |
2856 | continue; | |
2857 | ||
2858 | /* Two things show up here (hopefully); static symbols of | |
2859 | local scope (static used inside braces) or extensions | |
2860 | of structure symbols. We can ignore both. */ | |
2861 | case 'V': | |
2862 | case '(': | |
2863 | case '0': | |
2864 | case '1': | |
2865 | case '2': | |
2866 | case '3': | |
2867 | case '4': | |
2868 | case '5': | |
2869 | case '6': | |
2870 | case '7': | |
2871 | case '8': | |
2872 | case '9': | |
2873 | case '-': | |
3e43a32a MS |
2874 | case '#': /* For symbol identification (used in |
2875 | live ranges). */ | |
d5d0a62f EZ |
2876 | continue; |
2877 | ||
2878 | case ':': | |
2879 | /* It is a C++ nested symbol. We don't need to record it | |
2880 | (I don't think); if we try to look up foo::bar::baz, | |
2881 | then symbols for the symtab containing foo should get | |
2882 | read in, I think. */ | |
2883 | /* Someone says sun cc puts out symbols like | |
2884 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2885 | which would get here with a symbol type of ':'. */ | |
2886 | continue; | |
2887 | ||
2888 | default: | |
3e43a32a MS |
2889 | /* Unexpected symbol descriptor. The second and |
2890 | subsequent stabs of a continued stab can show up | |
2891 | here. The question is whether they ever can mimic | |
2892 | a normal stab--it would be nice if not, since we | |
2893 | certainly don't want to spend the time searching to | |
2894 | the end of every string looking for a | |
2895 | backslash. */ | |
d5d0a62f | 2896 | |
23136709 | 2897 | complaint (&symfile_complaints, |
e2e0b3e5 | 2898 | _("unknown symbol descriptor `%c'"), p[1]); |
d5d0a62f EZ |
2899 | |
2900 | /* Ignore it; perhaps it is an extension that we don't | |
2901 | know about. */ | |
2902 | continue; | |
2903 | } | |
2904 | } | |
c906108c SS |
2905 | } |
2906 | } | |
2907 | ||
2908 | if (pst) | |
2909 | { | |
2910 | xcoff_end_psymtab (pst, psymtab_include_list, includes_used, | |
2911 | ssymnum, dependency_list, | |
2912 | dependencies_used, textlow_not_set); | |
2913 | } | |
2914 | ||
581e13c1 MS |
2915 | /* Record the toc offset value of this symbol table into objfile |
2916 | structure. If no XMC_TC0 is found, toc_offset should be zero. | |
2917 | Another place to obtain this information would be file auxiliary | |
2918 | header. */ | |
c906108c | 2919 | |
3e43a32a MS |
2920 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->toc_offset |
2921 | = toc_offset; | |
c906108c SS |
2922 | } |
2923 | ||
2924 | /* Return the toc offset value for a given objfile. */ | |
2925 | ||
2926 | CORE_ADDR | |
63807e1d | 2927 | xcoff_get_toc_offset (struct objfile *objfile) |
c906108c SS |
2928 | { |
2929 | if (objfile) | |
3e43a32a MS |
2930 | return ((struct coff_symfile_info *) |
2931 | objfile->deprecated_sym_private)->toc_offset; | |
c906108c SS |
2932 | return 0; |
2933 | } | |
2934 | ||
2935 | /* Scan and build partial symbols for a symbol file. | |
2936 | We have been initialized by a call to dbx_symfile_init, which | |
2937 | put all the relevant info into a "struct dbx_symfile_info", | |
2938 | hung off the objfile structure. | |
2939 | ||
2940 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
581e13c1 MS |
2941 | various sections are (depending where the sections were actually |
2942 | loaded). */ | |
c906108c SS |
2943 | |
2944 | static void | |
f4352531 | 2945 | xcoff_initial_scan (struct objfile *objfile, int symfile_flags) |
c906108c SS |
2946 | { |
2947 | bfd *abfd; | |
2948 | int val; | |
2949 | struct cleanup *back_to; | |
c5aa993b JM |
2950 | int num_symbols; /* # of symbols */ |
2951 | file_ptr symtab_offset; /* symbol table and */ | |
2952 | file_ptr stringtab_offset; /* string table file offsets */ | |
c906108c SS |
2953 | struct coff_symfile_info *info; |
2954 | char *name; | |
2955 | unsigned int size; | |
2956 | ||
0a6ddd08 | 2957 | info = (struct coff_symfile_info *) objfile->deprecated_sym_private; |
c906108c SS |
2958 | symfile_bfd = abfd = objfile->obfd; |
2959 | name = objfile->name; | |
2960 | ||
2961 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2962 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2963 | stringtab_offset = symtab_offset + | |
c5aa993b | 2964 | num_symbols * coff_data (abfd)->local_symesz; |
c906108c SS |
2965 | |
2966 | info->min_lineno_offset = 0; | |
2967 | info->max_lineno_offset = 0; | |
2968 | bfd_map_over_sections (abfd, find_linenos, info); | |
2969 | ||
2970 | if (num_symbols > 0) | |
2971 | { | |
2972 | /* Read the string table. */ | |
2973 | init_stringtab (abfd, stringtab_offset, objfile); | |
2974 | ||
2975 | /* Read the .debug section, if present. */ | |
2976 | { | |
7be0c536 | 2977 | struct bfd_section *secp; |
c906108c SS |
2978 | bfd_size_type length; |
2979 | char *debugsec = NULL; | |
2980 | ||
2981 | secp = bfd_get_section_by_name (abfd, ".debug"); | |
2982 | if (secp) | |
2983 | { | |
2984 | length = bfd_section_size (abfd, secp); | |
2985 | if (length) | |
2986 | { | |
2987 | debugsec = | |
4a146b47 | 2988 | (char *) obstack_alloc (&objfile->objfile_obstack, length); |
c906108c SS |
2989 | |
2990 | if (!bfd_get_section_contents (abfd, secp, debugsec, | |
2991 | (file_ptr) 0, length)) | |
2992 | { | |
8a3fe4f8 | 2993 | error (_("Error reading .debug section of `%s': %s"), |
c906108c SS |
2994 | name, bfd_errmsg (bfd_get_error ())); |
2995 | } | |
2996 | } | |
2997 | } | |
3e43a32a MS |
2998 | ((struct coff_symfile_info *) |
2999 | objfile->deprecated_sym_private)->debugsec | |
3000 | = debugsec; | |
c906108c SS |
3001 | } |
3002 | } | |
3003 | ||
3004 | /* Read the symbols. We keep them in core because we will want to | |
3005 | access them randomly in read_symbol*. */ | |
3006 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); | |
3007 | if (val < 0) | |
8a3fe4f8 | 3008 | error (_("Error reading symbols from %s: %s"), |
c906108c SS |
3009 | name, bfd_errmsg (bfd_get_error ())); |
3010 | size = coff_data (abfd)->local_symesz * num_symbols; | |
0a6ddd08 | 3011 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->symtbl = |
4a146b47 | 3012 | obstack_alloc (&objfile->objfile_obstack, size); |
3e43a32a MS |
3013 | ((struct coff_symfile_info *) |
3014 | objfile->deprecated_sym_private)->symtbl_num_syms | |
3015 | = num_symbols; | |
c906108c | 3016 | |
3e43a32a MS |
3017 | val = bfd_bread (((struct coff_symfile_info *) |
3018 | objfile->deprecated_sym_private)->symtbl, | |
3a42e9d0 | 3019 | size, abfd); |
c906108c | 3020 | if (val != size) |
e2e0b3e5 | 3021 | perror_with_name (_("reading symbol table")); |
c906108c | 3022 | |
581e13c1 | 3023 | /* If we are reinitializing, or if we have never loaded syms yet, init. */ |
de1d8fb9 | 3024 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3025 | /* I'm not sure how how good num_symbols is; the rule of thumb in |
3026 | init_psymbol_list was developed for a.out. On the one hand, | |
3027 | num_symbols includes auxents. On the other hand, it doesn't | |
3028 | include N_SLINE. */ | |
3029 | init_psymbol_list (objfile, num_symbols); | |
3030 | ||
3031 | free_pending_blocks (); | |
a0b3c4fd | 3032 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c SS |
3033 | |
3034 | init_minimal_symbol_collection (); | |
56e290f4 | 3035 | make_cleanup_discard_minimal_symbols (); |
c906108c SS |
3036 | |
3037 | /* Now that the symbol table data of the executable file are all in core, | |
3038 | process them and define symbols accordingly. */ | |
3039 | ||
d4f3574e | 3040 | scan_xcoff_symtab (objfile); |
c906108c SS |
3041 | |
3042 | /* Install any minimal symbols that have been collected as the current | |
581e13c1 | 3043 | minimal symbols for this objfile. */ |
c906108c SS |
3044 | |
3045 | install_minimal_symbols (objfile); | |
3046 | ||
316a8b21 TG |
3047 | /* DWARF2 sections. */ |
3048 | ||
3049 | if (dwarf2_has_info (objfile, &dwarf2_xcoff_names)) | |
3050 | dwarf2_build_psymtabs (objfile); | |
3051 | ||
3052 | dwarf2_build_frame_info (objfile); | |
3053 | ||
c906108c SS |
3054 | do_cleanups (back_to); |
3055 | } | |
3056 | \f | |
d4f3574e | 3057 | static void |
3e43a32a MS |
3058 | xcoff_symfile_offsets (struct objfile *objfile, |
3059 | struct section_addr_info *addrs) | |
c906108c | 3060 | { |
b8fbeb18 | 3061 | asection *sect = NULL; |
c906108c SS |
3062 | int i; |
3063 | ||
a39a16c4 | 3064 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
d4f3574e | 3065 | objfile->section_offsets = (struct section_offsets *) |
8b92e4d5 | 3066 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 3067 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
c906108c | 3068 | |
581e13c1 | 3069 | /* Initialize the section indexes for future use. */ |
b8fbeb18 EZ |
3070 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
3071 | if (sect) | |
3072 | objfile->sect_index_text = sect->index; | |
3073 | ||
3074 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
3075 | if (sect) | |
3076 | objfile->sect_index_data = sect->index; | |
3077 | ||
3078 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
3079 | if (sect) | |
3080 | objfile->sect_index_bss = sect->index; | |
3081 | ||
3082 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
3083 | if (sect) | |
3084 | objfile->sect_index_rodata = sect->index; | |
3085 | ||
c906108c | 3086 | for (i = 0; i < objfile->num_sections; ++i) |
b8fbeb18 EZ |
3087 | { |
3088 | /* syms_from_objfile kindly subtracts from addr the | |
3089 | bfd_section_vma of the .text section. This strikes me as | |
3090 | wrong--whether the offset to be applied to symbol reading is | |
3091 | relative to the start address of the section depends on the | |
3092 | symbol format. In any event, this whole "addr" concept is | |
3093 | pretty broken (it doesn't handle any section but .text | |
3094 | sensibly), so just ignore the addr parameter and use 0. | |
3095 | rs6000-nat.c will set the correct section offsets via | |
3096 | objfile_relocate. */ | |
f0a58b0b | 3097 | (objfile->section_offsets)->offsets[i] = 0; |
b8fbeb18 | 3098 | } |
c906108c SS |
3099 | } |
3100 | ||
3101 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
3102 | ||
00b5771c | 3103 | static const struct sym_fns xcoff_sym_fns = |
c906108c SS |
3104 | { |
3105 | ||
7a78ae4e | 3106 | /* It is possible that coff and xcoff should be merged as |
c906108c SS |
3107 | they do have fundamental similarities (for example, the extra storage |
3108 | classes used for stabs could presumably be recognized in any COFF file). | |
3109 | However, in addition to obvious things like all the csect hair, there are | |
3110 | some subtler differences between xcoffread.c and coffread.c, notably | |
3111 | the fact that coffread.c has no need to read in all the symbols, but | |
3112 | xcoffread.c reads all the symbols and does in fact randomly access them | |
3113 | (in C_BSTAT and line number processing). */ | |
3114 | ||
7a78ae4e | 3115 | bfd_target_xcoff_flavour, |
c906108c | 3116 | |
3e43a32a MS |
3117 | xcoff_new_init, /* init anything gbl to entire symtab */ |
3118 | xcoff_symfile_init, /* read initial info, setup for sym_read() */ | |
3119 | xcoff_initial_scan, /* read a symbol file into symtab */ | |
b11896a5 | 3120 | NULL, /* sym_read_psymbols */ |
3e43a32a MS |
3121 | xcoff_symfile_finish, /* finished with file, cleanup */ |
3122 | xcoff_symfile_offsets, /* xlate offsets ext->int form */ | |
3123 | default_symfile_segments, /* Get segment information from a file. */ | |
3124 | aix_process_linenos, | |
3125 | default_symfile_relocate, /* Relocate a debug section. */ | |
00b5771c | 3126 | &psym_functions |
c906108c SS |
3127 | }; |
3128 | ||
63807e1d PA |
3129 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
3130 | extern initialize_file_ftype _initialize_xcoffread; | |
3131 | ||
c906108c | 3132 | void |
fba45db2 | 3133 | _initialize_xcoffread (void) |
c906108c | 3134 | { |
c5aa993b | 3135 | add_symtab_fns (&xcoff_sym_fns); |
c906108c | 3136 | } |