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 SS |
83 | |
84 | /* Remember what we deduced to be the source language of this psymtab. */ | |
85 | ||
86 | static enum language psymtab_language = language_unknown; | |
c906108c | 87 | \f |
c5aa993b | 88 | |
c906108c SS |
89 | /* Simplified internal version of coff symbol table information */ |
90 | ||
c5aa993b JM |
91 | struct coff_symbol |
92 | { | |
93 | char *c_name; | |
94 | int c_symnum; /* symbol number of this entry */ | |
95 | int c_naux; /* 0 if syment only, 1 if syment + auxent */ | |
96 | long c_value; | |
97 | unsigned char c_sclass; | |
98 | int c_secnum; | |
99 | unsigned int c_type; | |
100 | }; | |
c906108c SS |
101 | |
102 | /* last function's saved coff symbol `cs' */ | |
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 | |
110 | symbol. */ | |
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 | ||
119 | /* initial symbol-table-debug-string vector length */ | |
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 | { | |
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 | |
23136709 KB |
155 | static void |
156 | bf_notfound_complaint (void) | |
157 | { | |
3e43a32a MS |
158 | complaint (&symfile_complaints, |
159 | _("line numbers off, `.bf' symbol not found")); | |
23136709 | 160 | } |
c906108c | 161 | |
23136709 KB |
162 | static void |
163 | ef_complaint (int arg1) | |
164 | { | |
165 | complaint (&symfile_complaints, | |
e2e0b3e5 | 166 | _("Mismatched .ef symbol ignored starting at symnum %d"), arg1); |
23136709 | 167 | } |
c906108c | 168 | |
23136709 KB |
169 | static void |
170 | eb_complaint (int arg1) | |
171 | { | |
172 | complaint (&symfile_complaints, | |
e2e0b3e5 | 173 | _("Mismatched .eb symbol ignored starting at symnum %d"), arg1); |
23136709 | 174 | } |
c906108c | 175 | |
a14ed312 | 176 | static void xcoff_initial_scan (struct objfile *, int); |
c906108c | 177 | |
a14ed312 | 178 | static void scan_xcoff_symtab (struct objfile *); |
c906108c | 179 | |
a14ed312 | 180 | static char *xcoff_next_symbol_text (struct objfile *); |
c906108c | 181 | |
a14ed312 | 182 | static void record_include_begin (struct coff_symbol *); |
c906108c SS |
183 | |
184 | static void | |
a14ed312 KB |
185 | enter_line_range (struct subfile *, unsigned, unsigned, |
186 | CORE_ADDR, CORE_ADDR, unsigned *); | |
c906108c | 187 | |
a14ed312 | 188 | static void init_stringtab (bfd *, file_ptr, struct objfile *); |
c906108c | 189 | |
a14ed312 | 190 | static void xcoff_symfile_init (struct objfile *); |
c906108c | 191 | |
a14ed312 | 192 | static void xcoff_new_init (struct objfile *); |
c906108c | 193 | |
a14ed312 | 194 | static void xcoff_symfile_finish (struct objfile *); |
c906108c | 195 | |
570b8f7c AC |
196 | static void xcoff_symfile_offsets (struct objfile *, |
197 | struct section_addr_info *addrs); | |
c906108c | 198 | |
a14ed312 | 199 | static char *coff_getfilename (union internal_auxent *, struct objfile *); |
c906108c | 200 | |
a14ed312 | 201 | static void read_symbol (struct internal_syment *, int); |
c906108c | 202 | |
a14ed312 | 203 | static int read_symbol_lineno (int); |
c906108c | 204 | |
470d5666 | 205 | static CORE_ADDR read_symbol_nvalue (int); |
c906108c | 206 | |
a14ed312 KB |
207 | static struct symbol *process_xcoff_symbol (struct coff_symbol *, |
208 | struct objfile *); | |
c906108c | 209 | |
a14ed312 | 210 | static void read_xcoff_symtab (struct partial_symtab *); |
c906108c SS |
211 | |
212 | #if 0 | |
a14ed312 | 213 | static void add_stab_to_list (char *, struct pending_stabs **); |
c906108c SS |
214 | #endif |
215 | ||
a14ed312 | 216 | static int compare_lte (const void *, const void *); |
c906108c | 217 | |
a14ed312 | 218 | static struct linetable *arrange_linetable (struct linetable *); |
c906108c | 219 | |
a14ed312 | 220 | static void record_include_end (struct coff_symbol *); |
c906108c | 221 | |
a14ed312 | 222 | static void process_linenos (CORE_ADDR, CORE_ADDR); |
c906108c | 223 | \f |
c5aa993b | 224 | |
c906108c SS |
225 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
226 | code. */ | |
a14ed312 KB |
227 | static int secnum_to_section (int, struct objfile *); |
228 | static asection *secnum_to_bfd_section (int, struct objfile *); | |
c906108c | 229 | |
c5aa993b JM |
230 | struct find_targ_sec_arg |
231 | { | |
232 | int targ_index; | |
233 | int *resultp; | |
234 | asection **bfd_sect; | |
b8fbeb18 | 235 | struct objfile *objfile; |
c5aa993b | 236 | }; |
c906108c | 237 | |
a14ed312 | 238 | static void find_targ_sec (bfd *, asection *, void *); |
c906108c | 239 | |
c5aa993b | 240 | static void |
4efb68b1 | 241 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 242 | { |
c5aa993b | 243 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
b8fbeb18 | 244 | struct objfile *objfile = args->objfile; |
a109c7c1 | 245 | |
c906108c SS |
246 | if (sect->target_index == args->targ_index) |
247 | { | |
248 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
249 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
b8fbeb18 | 250 | *args->resultp = SECT_OFF_TEXT (objfile); |
c906108c | 251 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) |
b8fbeb18 | 252 | *args->resultp = SECT_OFF_DATA (objfile); |
c906108c | 253 | else |
44af9391 | 254 | *args->resultp = sect->index; |
c906108c SS |
255 | *args->bfd_sect = sect; |
256 | } | |
257 | } | |
258 | ||
259 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
260 | static int | |
fba45db2 | 261 | secnum_to_section (int secnum, struct objfile *objfile) |
c906108c | 262 | { |
b8fbeb18 | 263 | int off = SECT_OFF_TEXT (objfile); |
a109c7c1 | 264 | |
c906108c SS |
265 | asection *sect = NULL; |
266 | struct find_targ_sec_arg args; | |
267 | args.targ_index = secnum; | |
268 | args.resultp = &off; | |
269 | args.bfd_sect = § | |
b8fbeb18 | 270 | args.objfile = objfile; |
c906108c SS |
271 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
272 | return off; | |
273 | } | |
274 | ||
275 | /* Return the BFD section that CS points to. */ | |
276 | static asection * | |
fba45db2 | 277 | secnum_to_bfd_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 = § | |
7a78ae4e | 286 | args.objfile = objfile; |
c906108c SS |
287 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
288 | return sect; | |
289 | } | |
290 | \f | |
291 | /* add a given stab string into given stab vector. */ | |
292 | ||
293 | #if 0 | |
294 | ||
295 | static void | |
fba45db2 | 296 | add_stab_to_list (char *stabname, struct pending_stabs **stabvector) |
c906108c | 297 | { |
c5aa993b JM |
298 | if (*stabvector == NULL) |
299 | { | |
300 | *stabvector = (struct pending_stabs *) | |
301 | xmalloc (sizeof (struct pending_stabs) + | |
302 | INITIAL_STABVECTOR_LENGTH * sizeof (char *)); | |
303 | (*stabvector)->count = 0; | |
304 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
305 | } | |
306 | else if ((*stabvector)->count >= (*stabvector)->length) | |
307 | { | |
308 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
309 | *stabvector = (struct pending_stabs *) | |
310 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + | |
3e43a32a | 311 | (*stabvector)->length * sizeof (char *)); |
c5aa993b JM |
312 | } |
313 | (*stabvector)->stab[(*stabvector)->count++] = stabname; | |
c906108c SS |
314 | } |
315 | ||
316 | #endif | |
c5aa993b | 317 | \f/* *INDENT-OFF* */ |
c906108c SS |
318 | /* Linenos are processed on a file-by-file basis. |
319 | ||
320 | Two reasons: | |
321 | ||
c5aa993b JM |
322 | 1) xlc (IBM's native c compiler) postpones static function code |
323 | emission to the end of a compilation unit. This way it can | |
324 | determine if those functions (statics) are needed or not, and | |
325 | can do some garbage collection (I think). This makes line | |
326 | numbers and corresponding addresses unordered, and we end up | |
327 | with a line table like: | |
328 | ||
329 | ||
330 | lineno addr | |
331 | foo() 10 0x100 | |
332 | 20 0x200 | |
333 | 30 0x300 | |
334 | ||
335 | foo3() 70 0x400 | |
336 | 80 0x500 | |
337 | 90 0x600 | |
338 | ||
339 | static foo2() | |
340 | 40 0x700 | |
341 | 50 0x800 | |
342 | 60 0x900 | |
343 | ||
344 | and that breaks gdb's binary search on line numbers, if the | |
345 | above table is not sorted on line numbers. And that sort | |
346 | should be on function based, since gcc can emit line numbers | |
347 | like: | |
348 | ||
349 | 10 0x100 - for the init/test part of a for stmt. | |
350 | 20 0x200 | |
351 | 30 0x300 | |
352 | 10 0x400 - for the increment part of a for stmt. | |
353 | ||
354 | arrange_linetable() will do this sorting. | |
355 | ||
356 | 2) aix symbol table might look like: | |
357 | ||
358 | c_file // beginning of a new file | |
359 | .bi // beginning of include file | |
360 | .ei // end of include file | |
361 | .bi | |
362 | .ei | |
363 | ||
364 | basically, .bi/.ei pairs do not necessarily encapsulate | |
365 | their scope. They need to be recorded, and processed later | |
366 | on when we come the end of the compilation unit. | |
367 | Include table (inclTable) and process_linenos() handle | |
368 | that. */ | |
9846de1b | 369 | /* *INDENT-ON* */ |
c906108c | 370 | |
c5aa993b JM |
371 | |
372 | ||
c906108c SS |
373 | /* compare line table entry addresses. */ |
374 | ||
375 | static int | |
fba45db2 | 376 | compare_lte (const void *lte1p, const void *lte2p) |
c906108c SS |
377 | { |
378 | struct linetable_entry *lte1 = (struct linetable_entry *) lte1p; | |
379 | struct linetable_entry *lte2 = (struct linetable_entry *) lte2p; | |
a109c7c1 | 380 | |
c906108c SS |
381 | return lte1->pc - lte2->pc; |
382 | } | |
383 | ||
384 | /* Given a line table with function entries are marked, arrange its functions | |
385 | in ascending order and strip off function entry markers and return it in | |
386 | a newly created table. If the old one is good enough, return the old one. */ | |
387 | /* FIXME: I think all this stuff can be replaced by just passing | |
388 | sort_linevec = 1 to end_symtab. */ | |
389 | ||
390 | static struct linetable * | |
b095261a | 391 | arrange_linetable (struct linetable *oldLineTb) |
c906108c | 392 | { |
c5aa993b JM |
393 | int ii, jj, newline, /* new line count */ |
394 | function_count; /* # of functions */ | |
c906108c | 395 | |
c5aa993b JM |
396 | struct linetable_entry *fentry; /* function entry vector */ |
397 | int fentry_size; /* # of function entries */ | |
398 | struct linetable *newLineTb; /* new line table */ | |
c906108c SS |
399 | |
400 | #define NUM_OF_FUNCTIONS 20 | |
401 | ||
402 | fentry_size = NUM_OF_FUNCTIONS; | |
c5aa993b | 403 | fentry = (struct linetable_entry *) |
c906108c SS |
404 | xmalloc (fentry_size * sizeof (struct linetable_entry)); |
405 | ||
c5aa993b JM |
406 | for (function_count = 0, ii = 0; ii < oldLineTb->nitems; ++ii) |
407 | { | |
c5aa993b JM |
408 | if (oldLineTb->item[ii].line == 0) |
409 | { /* function entry found. */ | |
c5aa993b JM |
410 | if (function_count >= fentry_size) |
411 | { /* make sure you have room. */ | |
412 | fentry_size *= 2; | |
413 | fentry = (struct linetable_entry *) | |
3e43a32a MS |
414 | xrealloc (fentry, |
415 | fentry_size * sizeof (struct linetable_entry)); | |
c5aa993b JM |
416 | } |
417 | fentry[function_count].line = ii; | |
418 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
419 | ++function_count; | |
420 | } | |
c906108c | 421 | } |
c906108c | 422 | |
c5aa993b JM |
423 | if (function_count == 0) |
424 | { | |
b8c9b27d | 425 | xfree (fentry); |
c5aa993b JM |
426 | return oldLineTb; |
427 | } | |
c906108c | 428 | else if (function_count > 1) |
3e43a32a MS |
429 | qsort (fentry, function_count, |
430 | sizeof (struct linetable_entry), compare_lte); | |
c906108c SS |
431 | |
432 | /* allocate a new line table. */ | |
433 | newLineTb = (struct linetable *) | |
434 | xmalloc | |
c5aa993b JM |
435 | (sizeof (struct linetable) + |
436 | (oldLineTb->nitems - function_count) * sizeof (struct linetable_entry)); | |
c906108c SS |
437 | |
438 | /* if line table does not start with a function beginning, copy up until | |
439 | a function begin. */ | |
440 | ||
441 | newline = 0; | |
442 | if (oldLineTb->item[0].line != 0) | |
c5aa993b JM |
443 | for (newline = 0; |
444 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
c906108c SS |
445 | newLineTb->item[newline] = oldLineTb->item[newline]; |
446 | ||
447 | /* Now copy function lines one by one. */ | |
448 | ||
c5aa993b JM |
449 | for (ii = 0; ii < function_count; ++ii) |
450 | { | |
451 | for (jj = fentry[ii].line + 1; | |
452 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
453 | ++jj, ++newline) | |
454 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
455 | } | |
b8c9b27d | 456 | xfree (fentry); |
c906108c | 457 | newLineTb->nitems = oldLineTb->nitems - function_count; |
c5aa993b JM |
458 | return newLineTb; |
459 | } | |
c906108c SS |
460 | |
461 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
462 | following `IncludeChain'. At the end of each symtab (end_symtab), | |
463 | we will determine if we should create additional symtab's to | |
464 | represent if (the include files. */ | |
465 | ||
466 | ||
c5aa993b JM |
467 | typedef struct _inclTable |
468 | { | |
469 | char *name; /* include filename */ | |
c906108c SS |
470 | |
471 | /* Offsets to the line table. end points to the last entry which is | |
472 | part of this include file. */ | |
c5aa993b JM |
473 | int begin, end; |
474 | ||
c906108c | 475 | struct subfile *subfile; |
c5aa993b JM |
476 | unsigned funStartLine; /* start line # of its function */ |
477 | } | |
478 | InclTable; | |
c906108c SS |
479 | |
480 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
c5aa993b JM |
481 | static InclTable *inclTable; /* global include table */ |
482 | static int inclIndx; /* last entry to table */ | |
483 | static int inclLength; /* table length */ | |
484 | static int inclDepth; /* nested include depth */ | |
c906108c | 485 | |
a14ed312 | 486 | static void allocate_include_entry (void); |
c906108c SS |
487 | |
488 | static void | |
fba45db2 | 489 | record_include_begin (struct coff_symbol *cs) |
c906108c SS |
490 | { |
491 | if (inclDepth) | |
492 | { | |
493 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
c5aa993b | 494 | of course, but in corresponding .s files.). */ |
c906108c SS |
495 | |
496 | /* This can happen with old versions of GCC. | |
c5aa993b JM |
497 | GCC 2.3.3-930426 does not exhibit this on a test case which |
498 | a user said produced the message for him. */ | |
e2e0b3e5 | 499 | complaint (&symfile_complaints, _("Nested C_BINCL symbols")); |
c906108c SS |
500 | } |
501 | ++inclDepth; | |
502 | ||
503 | allocate_include_entry (); | |
504 | ||
c5aa993b JM |
505 | inclTable[inclIndx].name = cs->c_name; |
506 | inclTable[inclIndx].begin = cs->c_value; | |
c906108c SS |
507 | } |
508 | ||
509 | static void | |
fba45db2 | 510 | record_include_end (struct coff_symbol *cs) |
c906108c | 511 | { |
c5aa993b | 512 | InclTable *pTbl; |
c906108c SS |
513 | |
514 | if (inclDepth == 0) | |
515 | { | |
e2e0b3e5 | 516 | complaint (&symfile_complaints, _("Mismatched C_BINCL/C_EINCL pair")); |
c906108c SS |
517 | } |
518 | ||
519 | allocate_include_entry (); | |
520 | ||
c5aa993b | 521 | pTbl = &inclTable[inclIndx]; |
c906108c SS |
522 | pTbl->end = cs->c_value; |
523 | ||
524 | --inclDepth; | |
525 | ++inclIndx; | |
526 | } | |
527 | ||
528 | static void | |
fba45db2 | 529 | allocate_include_entry (void) |
c906108c SS |
530 | { |
531 | if (inclTable == NULL) | |
532 | { | |
c5aa993b | 533 | inclTable = (InclTable *) |
c906108c SS |
534 | xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); |
535 | memset (inclTable, | |
536 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
537 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; | |
538 | inclIndx = 0; | |
539 | } | |
540 | else if (inclIndx >= inclLength) | |
541 | { | |
542 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
c5aa993b | 543 | inclTable = (InclTable *) |
c906108c | 544 | xrealloc (inclTable, sizeof (InclTable) * inclLength); |
c5aa993b JM |
545 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, |
546 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
c906108c SS |
547 | } |
548 | } | |
549 | ||
550 | /* Global variable to pass the psymtab down to all the routines involved | |
551 | in psymtab to symtab processing. */ | |
552 | static struct partial_symtab *this_symtab_psymtab; | |
553 | ||
554 | /* given the start and end addresses of a compilation unit (or a csect, | |
555 | at times) process its lines and create appropriate line vectors. */ | |
556 | ||
557 | static void | |
fba45db2 | 558 | process_linenos (CORE_ADDR start, CORE_ADDR end) |
c906108c SS |
559 | { |
560 | int offset, ii; | |
561 | file_ptr max_offset = | |
a109c7c1 MS |
562 | ((struct coff_symfile_info *) this_symtab_psymtab->objfile |
563 | ->deprecated_sym_private)->max_lineno_offset; | |
c906108c SS |
564 | |
565 | /* subfile structure for the main compilation unit. */ | |
566 | struct subfile main_subfile; | |
567 | ||
568 | /* In the main source file, any time we see a function entry, we | |
569 | reset this variable to function's absolute starting line number. | |
570 | All the following line numbers in the function are relative to | |
571 | this, and we record absolute line numbers in record_line(). */ | |
572 | ||
573 | unsigned int main_source_baseline = 0; | |
574 | ||
575 | unsigned *firstLine; | |
576 | ||
577 | offset = | |
c5aa993b | 578 | ((struct symloc *) this_symtab_psymtab->read_symtab_private)->lineno_off; |
c906108c SS |
579 | if (offset == 0) |
580 | goto return_after_cleanup; | |
581 | ||
582 | memset (&main_subfile, '\0', sizeof (main_subfile)); | |
583 | ||
584 | if (inclIndx == 0) | |
585 | /* All source lines were in the main source file. None in include files. */ | |
586 | ||
c5aa993b JM |
587 | enter_line_range (&main_subfile, offset, 0, start, end, |
588 | &main_source_baseline); | |
c906108c SS |
589 | |
590 | else | |
591 | { | |
592 | /* There was source with line numbers in include files. */ | |
7a78ae4e ND |
593 | |
594 | int linesz = | |
595 | coff_data (this_symtab_psymtab->objfile->obfd)->local_linesz; | |
c906108c | 596 | main_source_baseline = 0; |
7a78ae4e | 597 | |
c5aa993b | 598 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c SS |
599 | { |
600 | struct subfile *tmpSubfile; | |
601 | ||
602 | /* If there is main file source before include file, enter it. */ | |
603 | if (offset < inclTable[ii].begin) | |
604 | { | |
605 | enter_line_range | |
7a78ae4e | 606 | (&main_subfile, offset, inclTable[ii].begin - linesz, |
c906108c SS |
607 | start, 0, &main_source_baseline); |
608 | } | |
609 | ||
c5933f6d JB |
610 | if (strcmp (inclTable[ii].name, last_source_file) == 0) |
611 | { | |
612 | /* The entry in the include table refers to the main source | |
613 | file. Add the lines to the main subfile. */ | |
614 | ||
615 | main_source_baseline = inclTable[ii].funStartLine; | |
616 | enter_line_range | |
617 | (&main_subfile, inclTable[ii].begin, inclTable[ii].end, | |
618 | start, 0, &main_source_baseline); | |
619 | inclTable[ii].subfile = &main_subfile; | |
620 | } | |
621 | else | |
622 | { | |
c5933f6d | 623 | /* Have a new subfile for the include file. */ |
c906108c | 624 | |
c5933f6d JB |
625 | tmpSubfile = inclTable[ii].subfile = |
626 | (struct subfile *) xmalloc (sizeof (struct subfile)); | |
c906108c | 627 | |
c5933f6d JB |
628 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
629 | firstLine = &(inclTable[ii].funStartLine); | |
630 | ||
631 | /* Enter include file's lines now. */ | |
632 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
633 | inclTable[ii].end, start, 0, firstLine); | |
634 | } | |
c906108c SS |
635 | |
636 | if (offset <= inclTable[ii].end) | |
7a78ae4e | 637 | offset = inclTable[ii].end + linesz; |
c906108c SS |
638 | } |
639 | ||
640 | /* All the include files' line have been processed at this point. Now, | |
c5aa993b | 641 | enter remaining lines of the main file, if any left. */ |
7a78ae4e | 642 | if (offset < max_offset + 1 - linesz) |
c906108c | 643 | { |
c5aa993b | 644 | enter_line_range (&main_subfile, offset, 0, start, end, |
c906108c SS |
645 | &main_source_baseline); |
646 | } | |
647 | } | |
648 | ||
649 | /* Process main file's line numbers. */ | |
650 | if (main_subfile.line_vector) | |
651 | { | |
652 | struct linetable *lineTb, *lv; | |
653 | ||
654 | lv = main_subfile.line_vector; | |
655 | ||
656 | /* Line numbers are not necessarily ordered. xlc compilation will | |
c5aa993b | 657 | put static function to the end. */ |
c906108c SS |
658 | |
659 | lineTb = arrange_linetable (lv); | |
660 | if (lv == lineTb) | |
661 | { | |
662 | current_subfile->line_vector = (struct linetable *) | |
663 | xrealloc (lv, (sizeof (struct linetable) | |
664 | + lv->nitems * sizeof (struct linetable_entry))); | |
665 | } | |
666 | else | |
667 | { | |
b8c9b27d | 668 | xfree (lv); |
c906108c SS |
669 | current_subfile->line_vector = lineTb; |
670 | } | |
671 | ||
c5aa993b | 672 | current_subfile->line_vector_length = |
c906108c SS |
673 | current_subfile->line_vector->nitems; |
674 | } | |
675 | ||
676 | /* Now, process included files' line numbers. */ | |
677 | ||
c5aa993b | 678 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c | 679 | { |
c5933f6d | 680 | if (inclTable[ii].subfile != ((struct subfile *) &main_subfile) |
3e43a32a MS |
681 | && (inclTable[ii].subfile)->line_vector) /* Useless if!!! |
682 | FIXMEmgo */ | |
c906108c SS |
683 | { |
684 | struct linetable *lineTb, *lv; | |
685 | ||
686 | lv = (inclTable[ii].subfile)->line_vector; | |
687 | ||
688 | /* Line numbers are not necessarily ordered. xlc compilation will | |
689 | put static function to the end. */ | |
690 | ||
691 | lineTb = arrange_linetable (lv); | |
692 | ||
693 | push_subfile (); | |
694 | ||
695 | /* For the same include file, we might want to have more than one | |
696 | subfile. This happens if we have something like: | |
697 | ||
c5aa993b JM |
698 | ...... |
699 | #include "foo.h" | |
700 | ...... | |
701 | #include "foo.h" | |
702 | ...... | |
c906108c SS |
703 | |
704 | while foo.h including code in it. (stupid but possible) | |
705 | Since start_subfile() looks at the name and uses an | |
706 | existing one if finds, we need to provide a fake name and | |
707 | fool it. */ | |
708 | ||
709 | #if 0 | |
c5aa993b | 710 | start_subfile (inclTable[ii].name, (char *) 0); |
c906108c SS |
711 | #else |
712 | { | |
713 | /* Pick a fake name that will produce the same results as this | |
714 | one when passed to deduce_language_from_filename. Kludge on | |
715 | top of kludge. */ | |
716 | char *fakename = strrchr (inclTable[ii].name, '.'); | |
a109c7c1 | 717 | |
c906108c SS |
718 | if (fakename == NULL) |
719 | fakename = " ?"; | |
c5aa993b | 720 | start_subfile (fakename, (char *) 0); |
b8c9b27d | 721 | xfree (current_subfile->name); |
c906108c | 722 | } |
c2d11a7d | 723 | current_subfile->name = xstrdup (inclTable[ii].name); |
c906108c SS |
724 | #endif |
725 | ||
726 | if (lv == lineTb) | |
727 | { | |
728 | current_subfile->line_vector = | |
729 | (struct linetable *) xrealloc | |
c5aa993b JM |
730 | (lv, (sizeof (struct linetable) |
731 | + lv->nitems * sizeof (struct linetable_entry))); | |
c906108c SS |
732 | |
733 | } | |
734 | else | |
735 | { | |
b8c9b27d | 736 | xfree (lv); |
c906108c SS |
737 | current_subfile->line_vector = lineTb; |
738 | } | |
739 | ||
c5aa993b | 740 | current_subfile->line_vector_length = |
c906108c | 741 | current_subfile->line_vector->nitems; |
c5aa993b | 742 | start_subfile (pop_subfile (), (char *) 0); |
c906108c SS |
743 | } |
744 | } | |
745 | ||
c5aa993b | 746 | return_after_cleanup: |
c906108c SS |
747 | |
748 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
749 | inclIndx = 0; | |
750 | ||
751 | /* Start with a fresh subfile structure for the next file. */ | |
752 | memset (&main_subfile, '\0', sizeof (struct subfile)); | |
753 | } | |
754 | ||
c295b2e5 | 755 | static void |
fba45db2 | 756 | aix_process_linenos (void) |
c906108c SS |
757 | { |
758 | /* process line numbers and enter them into line vector */ | |
759 | process_linenos (last_source_start_addr, cur_src_end_addr); | |
760 | } | |
761 | ||
762 | ||
763 | /* Enter a given range of lines into the line vector. | |
764 | can be called in the following two ways: | |
3e43a32a MS |
765 | enter_line_range (subfile, beginoffset, endoffset, |
766 | startaddr, 0, firstLine) or | |
767 | enter_line_range (subfile, beginoffset, 0, | |
768 | startaddr, endaddr, firstLine) | |
c906108c SS |
769 | |
770 | endoffset points to the last line table entry that we should pay | |
771 | attention to. */ | |
772 | ||
773 | static void | |
3e43a32a MS |
774 | enter_line_range (struct subfile *subfile, unsigned beginoffset, |
775 | unsigned endoffset, /* offsets to line table */ | |
fba45db2 KB |
776 | CORE_ADDR startaddr, /* offsets to line table */ |
777 | CORE_ADDR endaddr, unsigned *firstLine) | |
c906108c | 778 | { |
fbf65064 UW |
779 | struct objfile *objfile = this_symtab_psymtab->objfile; |
780 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
c906108c SS |
781 | unsigned int curoffset; |
782 | CORE_ADDR addr; | |
7a78ae4e | 783 | void *ext_lnno; |
c906108c SS |
784 | struct internal_lineno int_lnno; |
785 | unsigned int limit_offset; | |
786 | bfd *abfd; | |
7a78ae4e | 787 | int linesz; |
c906108c SS |
788 | |
789 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) | |
790 | return; | |
791 | curoffset = beginoffset; | |
792 | limit_offset = | |
fbf65064 | 793 | ((struct coff_symfile_info *) objfile->deprecated_sym_private) |
c5aa993b | 794 | ->max_lineno_offset; |
c906108c SS |
795 | |
796 | if (endoffset != 0) | |
797 | { | |
798 | if (endoffset >= limit_offset) | |
799 | { | |
23136709 | 800 | complaint (&symfile_complaints, |
e2e0b3e5 | 801 | _("Bad line table offset in C_EINCL directive")); |
c906108c SS |
802 | return; |
803 | } | |
804 | limit_offset = endoffset; | |
805 | } | |
806 | else | |
807 | limit_offset -= 1; | |
7a78ae4e | 808 | |
fbf65064 | 809 | abfd = objfile->obfd; |
7a78ae4e ND |
810 | linesz = coff_data (abfd)->local_linesz; |
811 | ext_lnno = alloca (linesz); | |
c906108c SS |
812 | |
813 | while (curoffset <= limit_offset) | |
814 | { | |
815 | bfd_seek (abfd, curoffset, SEEK_SET); | |
3a42e9d0 | 816 | bfd_bread (ext_lnno, linesz, abfd); |
7a78ae4e | 817 | bfd_coff_swap_lineno_in (abfd, ext_lnno, &int_lnno); |
c906108c SS |
818 | |
819 | /* Find the address this line represents. */ | |
820 | addr = (int_lnno.l_lnno | |
821 | ? int_lnno.l_addr.l_paddr | |
822 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
fbf65064 | 823 | addr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
824 | |
825 | if (addr < startaddr || (endaddr && addr >= endaddr)) | |
826 | return; | |
827 | ||
828 | if (int_lnno.l_lnno == 0) | |
829 | { | |
830 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
fbf65064 | 831 | record_line (subfile, 0, gdbarch_addr_bits_remove (gdbarch, addr)); |
c906108c SS |
832 | --(*firstLine); |
833 | } | |
834 | else | |
fbf65064 UW |
835 | record_line (subfile, *firstLine + int_lnno.l_lnno, |
836 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
7a78ae4e | 837 | curoffset += linesz; |
c906108c SS |
838 | } |
839 | } | |
840 | ||
841 | ||
842 | /* Save the vital information for use when closing off the current file. | |
843 | NAME is the file name the symbols came from, START_ADDR is the first | |
844 | text address for the file, and SIZE is the number of bytes of text. */ | |
845 | ||
846 | #define complete_symtab(name, start_addr) { \ | |
1b36a34b JK |
847 | last_source_file = xstrdup (name); \ |
848 | last_source_start_addr = start_addr; \ | |
c906108c SS |
849 | } |
850 | ||
851 | ||
852 | /* Refill the symbol table input buffer | |
853 | and set the variables that control fetching entries from it. | |
854 | Reports an error if no data available. | |
855 | This function can read past the end of the symbol table | |
856 | (into the string table) but this does no harm. */ | |
857 | ||
858 | /* Reading symbol table has to be fast! Keep the followings as macros, rather | |
859 | than functions. */ | |
860 | ||
861 | #define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, SECTION, OBJFILE) \ | |
862 | { \ | |
863 | char *namestr; \ | |
a109c7c1 MS |
864 | \ |
865 | namestr = (NAME); \ | |
866 | if (namestr[0] == '.') ++namestr; \ | |
867 | prim_record_minimal_symbol_and_info (namestr, (ADDR), (TYPE), \ | |
868 | (SECTION), (asection *)NULL, \ | |
869 | (OBJFILE)); \ | |
870 | misc_func_recorded = 1; \ | |
c906108c SS |
871 | } |
872 | ||
873 | ||
874 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be | |
875 | nested. At any given time, a symbol can only be in one static block. | |
876 | This is the base address of current static block, zero if non exists. */ | |
c5aa993b | 877 | |
c906108c SS |
878 | static int static_block_base = 0; |
879 | ||
880 | /* Section number for the current static block. */ | |
881 | ||
882 | static int static_block_section = -1; | |
883 | ||
884 | /* true if space for symbol name has been allocated. */ | |
885 | ||
886 | static int symname_alloced = 0; | |
887 | ||
888 | /* Next symbol to read. Pointer into raw seething symbol table. */ | |
889 | ||
890 | static char *raw_symbol; | |
891 | ||
892 | /* This is the function which stabsread.c calls to get symbol | |
893 | continuations. */ | |
894 | ||
895 | static char * | |
fba45db2 | 896 | xcoff_next_symbol_text (struct objfile *objfile) |
c906108c SS |
897 | { |
898 | struct internal_syment symbol; | |
c906108c | 899 | char *retval; |
a109c7c1 | 900 | |
c906108c | 901 | /* FIXME: is this the same as the passed arg? */ |
13c763f4 JB |
902 | if (this_symtab_psymtab) |
903 | objfile = this_symtab_psymtab->objfile; | |
c906108c SS |
904 | |
905 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); | |
906 | if (symbol.n_zeroes) | |
907 | { | |
e2e0b3e5 | 908 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
909 | |
910 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 911 | code does something reasonable. */ |
c906108c SS |
912 | retval = ""; |
913 | } | |
914 | else if (symbol.n_sclass & 0x80) | |
915 | { | |
3e43a32a MS |
916 | retval = ((struct coff_symfile_info *) |
917 | objfile->deprecated_sym_private)->debugsec | |
c5aa993b | 918 | + symbol.n_offset; |
3e43a32a | 919 | raw_symbol += coff_data (objfile->obfd)->local_symesz; |
c906108c SS |
920 | ++symnum; |
921 | } | |
922 | else | |
923 | { | |
e2e0b3e5 | 924 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
925 | |
926 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 927 | code does something reasonable. */ |
c906108c SS |
928 | retval = ""; |
929 | } | |
930 | return retval; | |
931 | } | |
932 | ||
933 | /* Read symbols for a given partial symbol table. */ | |
934 | ||
935 | static void | |
fba45db2 | 936 | read_xcoff_symtab (struct partial_symtab *pst) |
c906108c SS |
937 | { |
938 | struct objfile *objfile = pst->objfile; | |
939 | bfd *abfd = objfile->obfd; | |
940 | char *raw_auxptr; /* Pointer to first raw aux entry for sym */ | |
a109c7c1 MS |
941 | char *strtbl = |
942 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->strtbl; | |
c906108c | 943 | char *debugsec = |
a109c7c1 | 944 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->debugsec; |
11ed25ac | 945 | char *debugfmt = bfd_xcoff_is_xcoff64 (abfd) ? "XCOFF64" : "XCOFF"; |
c906108c SS |
946 | |
947 | struct internal_syment symbol[1]; | |
948 | union internal_auxent main_aux; | |
949 | struct coff_symbol cs[1]; | |
950 | CORE_ADDR file_start_addr = 0; | |
951 | CORE_ADDR file_end_addr = 0; | |
952 | ||
953 | int next_file_symnum = -1; | |
954 | unsigned int max_symnum; | |
955 | int just_started = 1; | |
956 | int depth = 0; | |
957 | int fcn_start_addr = 0; | |
958 | ||
238ae9af | 959 | struct coff_symbol fcn_stab_saved = { 0 }; |
c906108c SS |
960 | |
961 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ | |
962 | union internal_auxent fcn_aux_saved; | |
963 | struct context_stack *new; | |
964 | ||
965 | char *filestring = " _start_ "; /* Name of the current file. */ | |
966 | ||
c5aa993b | 967 | char *last_csect_name; /* last seen csect's name and value */ |
c906108c SS |
968 | CORE_ADDR last_csect_val; |
969 | int last_csect_sec; | |
970 | ||
971 | this_symtab_psymtab = pst; | |
972 | ||
973 | /* Get the appropriate COFF "constants" related to the file we're | |
974 | handling. */ | |
975 | local_symesz = coff_data (abfd)->local_symesz; | |
976 | ||
977 | last_source_file = NULL; | |
978 | last_csect_name = 0; | |
979 | last_csect_val = 0; | |
980 | ||
981 | start_stabs (); | |
c5aa993b | 982 | start_symtab (filestring, (char *) NULL, file_start_addr); |
7a78ae4e | 983 | record_debugformat (debugfmt); |
c5aa993b | 984 | symnum = ((struct symloc *) pst->read_symtab_private)->first_symnum; |
c906108c | 985 | max_symnum = |
c5aa993b | 986 | symnum + ((struct symloc *) pst->read_symtab_private)->numsyms; |
c906108c SS |
987 | first_object_file_end = 0; |
988 | ||
989 | raw_symbol = | |
0a6ddd08 | 990 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->symtbl |
c5aa993b | 991 | + symnum * local_symesz; |
c906108c SS |
992 | |
993 | while (symnum < max_symnum) | |
994 | { | |
c906108c SS |
995 | QUIT; /* make this command interruptable. */ |
996 | ||
997 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
998 | /* read one symbol into `cs' structure. After processing the | |
c5aa993b JM |
999 | whole symbol table, only string table will be kept in memory, |
1000 | symbol table and debug section of xcoff will be freed. Thus | |
1001 | we can mark symbols with names in string table as | |
1002 | `alloced'. */ | |
c906108c SS |
1003 | { |
1004 | int ii; | |
1005 | ||
1006 | /* Swap and align the symbol into a reasonable C structure. */ | |
1007 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1008 | ||
1009 | cs->c_symnum = symnum; | |
1010 | cs->c_naux = symbol->n_numaux; | |
1011 | if (symbol->n_zeroes) | |
1012 | { | |
1013 | symname_alloced = 0; | |
1014 | /* We must use the original, unswapped, name here so the name field | |
1015 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1016 | we use the new field, it gets overwritten for each symbol. */ | |
c5aa993b | 1017 | cs->c_name = ((struct external_syment *) raw_symbol)->e.e_name; |
c906108c SS |
1018 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1019 | '\0'-terminated. */ | |
1020 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1021 | { | |
1022 | char *p; | |
a109c7c1 | 1023 | |
4a146b47 | 1024 | p = obstack_alloc (&objfile->objfile_obstack, E_SYMNMLEN + 1); |
c906108c SS |
1025 | strncpy (p, cs->c_name, E_SYMNMLEN); |
1026 | p[E_SYMNMLEN] = '\0'; | |
1027 | cs->c_name = p; | |
1028 | symname_alloced = 1; | |
1029 | } | |
1030 | } | |
1031 | else if (symbol->n_sclass & 0x80) | |
1032 | { | |
1033 | cs->c_name = debugsec + symbol->n_offset; | |
1034 | symname_alloced = 0; | |
1035 | } | |
1036 | else | |
1037 | { | |
1038 | /* in string table */ | |
c5aa993b | 1039 | cs->c_name = strtbl + (int) symbol->n_offset; |
c906108c SS |
1040 | symname_alloced = 1; |
1041 | } | |
1042 | cs->c_value = symbol->n_value; | |
1043 | cs->c_sclass = symbol->n_sclass; | |
1044 | cs->c_secnum = symbol->n_scnum; | |
c5aa993b | 1045 | cs->c_type = (unsigned) symbol->n_type; |
c906108c | 1046 | |
7a78ae4e | 1047 | raw_symbol += local_symesz; |
c906108c SS |
1048 | ++symnum; |
1049 | ||
1050 | /* Save addr of first aux entry. */ | |
1051 | raw_auxptr = raw_symbol; | |
1052 | ||
1053 | /* Skip all the auxents associated with this symbol. */ | |
1054 | for (ii = symbol->n_numaux; ii; --ii) | |
1055 | { | |
1056 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1057 | ++symnum; | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | /* if symbol name starts with ".$" or "$", ignore it. */ | |
1062 | if (cs->c_name[0] == '$' | |
1063 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1064 | continue; | |
1065 | ||
1066 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
1067 | { | |
1068 | if (last_source_file) | |
1069 | { | |
3e43a32a MS |
1070 | pst->symtab = end_symtab (cur_src_end_addr, objfile, |
1071 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1072 | end_stabs (); |
1073 | } | |
1074 | ||
1075 | start_stabs (); | |
c5aa993b | 1076 | start_symtab ("_globals_", (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1077 | record_debugformat (debugfmt); |
c906108c SS |
1078 | cur_src_end_addr = first_object_file_end; |
1079 | /* done with all files, everything from here on is globals */ | |
1080 | } | |
1081 | ||
c906108c SS |
1082 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) |
1083 | && cs->c_naux == 1) | |
1084 | { | |
1085 | /* Dealing with a symbol with a csect entry. */ | |
1086 | ||
1087 | #define CSECT(PP) ((PP)->x_csect) | |
1088 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1089 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1090 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1091 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1092 | ||
1093 | /* Convert the auxent to something we can access. */ | |
1094 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1095 | 0, cs->c_naux, &main_aux); | |
1096 | ||
1097 | switch (CSECT_SMTYP (&main_aux)) | |
1098 | { | |
1099 | ||
1100 | case XTY_ER: | |
1101 | /* Ignore all external references. */ | |
1102 | continue; | |
1103 | ||
1104 | case XTY_SD: | |
1105 | /* A section description. */ | |
1106 | { | |
1107 | switch (CSECT_SCLAS (&main_aux)) | |
1108 | { | |
1109 | ||
1110 | case XMC_PR: | |
1111 | { | |
1112 | ||
1113 | /* A program csect is seen. We have to allocate one | |
c5aa993b JM |
1114 | symbol table for each program csect. Normally gdb |
1115 | prefers one symtab for each source file. In case | |
1116 | of AIX, one source file might include more than one | |
1117 | [PR] csect, and they don't have to be adjacent in | |
1118 | terms of the space they occupy in memory. Thus, one | |
1119 | single source file might get fragmented in the | |
1120 | memory and gdb's file start and end address | |
1121 | approach does not work! GCC (and I think xlc) seem | |
1122 | to put all the code in the unnamed program csect. */ | |
c906108c SS |
1123 | |
1124 | if (last_csect_name) | |
1125 | { | |
1126 | complete_symtab (filestring, file_start_addr); | |
1127 | cur_src_end_addr = file_end_addr; | |
3e43a32a MS |
1128 | end_symtab (file_end_addr, objfile, |
1129 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1130 | end_stabs (); |
1131 | start_stabs (); | |
1132 | /* Give all csects for this source file the same | |
1133 | name. */ | |
c5aa993b | 1134 | start_symtab (filestring, NULL, (CORE_ADDR) 0); |
7a78ae4e | 1135 | record_debugformat (debugfmt); |
c906108c SS |
1136 | } |
1137 | ||
1138 | /* If this is the very first csect seen, | |
c5aa993b | 1139 | basically `__start'. */ |
c906108c SS |
1140 | if (just_started) |
1141 | { | |
1142 | first_object_file_end | |
1143 | = cs->c_value + CSECT_LEN (&main_aux); | |
1144 | just_started = 0; | |
1145 | } | |
1146 | ||
1147 | file_start_addr = | |
1148 | cs->c_value + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1149 | SECT_OFF_TEXT (objfile)); |
c906108c SS |
1150 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); |
1151 | ||
977adac5 ND |
1152 | if (cs->c_name && (cs->c_name[0] == '.' |
1153 | || cs->c_name[0] == '@')) | |
c906108c SS |
1154 | { |
1155 | last_csect_name = cs->c_name; | |
1156 | last_csect_val = cs->c_value; | |
3e43a32a MS |
1157 | last_csect_sec = secnum_to_section (cs->c_secnum, |
1158 | objfile); | |
c906108c SS |
1159 | } |
1160 | } | |
1161 | continue; | |
1162 | ||
1163 | /* All other symbols are put into the minimal symbol | |
1164 | table only. */ | |
1165 | ||
1166 | case XMC_RW: | |
1167 | continue; | |
1168 | ||
1169 | case XMC_TC0: | |
1170 | continue; | |
1171 | ||
1172 | case XMC_TC: | |
1173 | continue; | |
1174 | ||
1175 | default: | |
1176 | /* Ignore the symbol. */ | |
1177 | continue; | |
1178 | } | |
1179 | } | |
1180 | break; | |
1181 | ||
1182 | case XTY_LD: | |
1183 | ||
1184 | switch (CSECT_SCLAS (&main_aux)) | |
1185 | { | |
1186 | case XMC_PR: | |
1187 | /* a function entry point. */ | |
1188 | function_entry_point: | |
1189 | ||
1190 | fcn_start_addr = cs->c_value; | |
1191 | ||
1192 | /* save the function header info, which will be used | |
1193 | when `.bf' is seen. */ | |
1194 | fcn_cs_saved = *cs; | |
1195 | fcn_aux_saved = main_aux; | |
1196 | continue; | |
1197 | ||
1198 | case XMC_GL: | |
1199 | /* shared library function trampoline code entry point. */ | |
1200 | continue; | |
1201 | ||
1202 | case XMC_DS: | |
1203 | /* The symbols often have the same names as debug symbols for | |
1204 | functions, and confuse lookup_symbol. */ | |
1205 | continue; | |
1206 | ||
1207 | default: | |
1208 | /* xlc puts each variable in a separate csect, so we get | |
1209 | an XTY_SD for each variable. But gcc puts several | |
1210 | variables in a csect, so that each variable only gets | |
1211 | an XTY_LD. This will typically be XMC_RW; I suspect | |
1212 | XMC_RO and XMC_BS might be possible too. | |
1213 | These variables are put in the minimal symbol table | |
1214 | only. */ | |
1215 | continue; | |
1216 | } | |
1217 | break; | |
1218 | ||
1219 | case XTY_CM: | |
1220 | /* Common symbols are put into the minimal symbol table only. */ | |
1221 | continue; | |
1222 | ||
1223 | default: | |
1224 | break; | |
1225 | } | |
1226 | } | |
1227 | ||
977adac5 ND |
1228 | /* If explicitly specified as a function, treat is as one. This check |
1229 | evaluates to true for @FIX* bigtoc CSECT symbols, so it must occur | |
1230 | after the above CSECT check. */ | |
1231 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
1232 | { | |
1233 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1234 | 0, cs->c_naux, &main_aux); | |
1235 | goto function_entry_point; | |
1236 | } | |
1237 | ||
c906108c SS |
1238 | switch (cs->c_sclass) |
1239 | { | |
c906108c SS |
1240 | case C_FILE: |
1241 | ||
1242 | /* c_value field contains symnum of next .file entry in table | |
1243 | or symnum of first global after last .file. */ | |
1244 | ||
1245 | next_file_symnum = cs->c_value; | |
1246 | ||
1247 | /* Complete symbol table for last object file containing | |
1248 | debugging information. */ | |
1249 | ||
1250 | /* Whether or not there was a csect in the previous file, we | |
1251 | have to call `end_stabs' and `start_stabs' to reset | |
1252 | type_vector, line_vector, etc. structures. */ | |
1253 | ||
1254 | complete_symtab (filestring, file_start_addr); | |
1255 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1256 | end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1257 | end_stabs (); |
1258 | ||
3e43a32a MS |
1259 | /* XCOFF, according to the AIX 3.2 documentation, puts the |
1260 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
1261 | do things the standard COFF way and put it in the auxent. | |
1262 | We use the auxent if the symbol is ".file" and an auxent | |
1263 | exists, otherwise use the symbol itself. Simple | |
1264 | enough. */ | |
c906108c SS |
1265 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) |
1266 | { | |
1267 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1268 | 0, cs->c_naux, &main_aux); | |
1269 | filestring = coff_getfilename (&main_aux, objfile); | |
1270 | } | |
1271 | else | |
1272 | filestring = cs->c_name; | |
1273 | ||
1274 | start_stabs (); | |
c5aa993b | 1275 | start_symtab (filestring, (char *) NULL, (CORE_ADDR) 0); |
7a78ae4e | 1276 | record_debugformat (debugfmt); |
c906108c SS |
1277 | last_csect_name = 0; |
1278 | ||
3e43a32a MS |
1279 | /* reset file start and end addresses. A compilation unit |
1280 | with no text (only data) should have zero file | |
1281 | boundaries. */ | |
c906108c SS |
1282 | file_start_addr = file_end_addr = 0; |
1283 | break; | |
1284 | ||
1285 | case C_FUN: | |
1286 | fcn_stab_saved = *cs; | |
1287 | break; | |
1288 | ||
1289 | case C_FCN: | |
7ecb6532 | 1290 | if (strcmp (cs->c_name, ".bf") == 0) |
c906108c SS |
1291 | { |
1292 | CORE_ADDR off = ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1293 | SECT_OFF_TEXT (objfile)); |
a109c7c1 | 1294 | |
c906108c SS |
1295 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1296 | 0, cs->c_naux, &main_aux); | |
1297 | ||
1298 | within_function = 1; | |
1299 | ||
1300 | new = push_context (0, fcn_start_addr + off); | |
1301 | ||
c5aa993b | 1302 | new->name = define_symbol |
c906108c SS |
1303 | (fcn_cs_saved.c_value + off, |
1304 | fcn_stab_saved.c_name, 0, 0, objfile); | |
1305 | if (new->name != NULL) | |
b8fbeb18 | 1306 | SYMBOL_SECTION (new->name) = SECT_OFF_TEXT (objfile); |
c906108c | 1307 | } |
7ecb6532 | 1308 | else if (strcmp (cs->c_name, ".ef") == 0) |
c906108c | 1309 | { |
c906108c SS |
1310 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1311 | 0, cs->c_naux, &main_aux); | |
1312 | ||
1313 | /* The value of .ef is the address of epilogue code; | |
c5aa993b | 1314 | not useful for gdb. */ |
c906108c | 1315 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
c5aa993b | 1316 | contains number of lines to '}' */ |
c906108c SS |
1317 | |
1318 | if (context_stack_depth <= 0) | |
a109c7c1 | 1319 | { /* We attempted to pop an empty context stack */ |
23136709 | 1320 | ef_complaint (cs->c_symnum); |
c906108c SS |
1321 | within_function = 0; |
1322 | break; | |
1323 | } | |
1324 | new = pop_context (); | |
1325 | /* Stack must be empty now. */ | |
1326 | if (context_stack_depth > 0 || new == NULL) | |
1327 | { | |
23136709 | 1328 | ef_complaint (cs->c_symnum); |
c906108c SS |
1329 | within_function = 0; |
1330 | break; | |
1331 | } | |
1332 | ||
1333 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1334 | new->start_addr, | |
1335 | (fcn_cs_saved.c_value | |
1336 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1337 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1338 | SECT_OFF_TEXT (objfile))), |
c906108c SS |
1339 | objfile); |
1340 | within_function = 0; | |
1341 | } | |
1342 | break; | |
1343 | ||
1344 | case C_BSTAT: | |
1345 | /* Begin static block. */ | |
1346 | { | |
1347 | struct internal_syment symbol; | |
1348 | ||
1349 | read_symbol (&symbol, cs->c_value); | |
1350 | static_block_base = symbol.n_value; | |
1351 | static_block_section = | |
1352 | secnum_to_section (symbol.n_scnum, objfile); | |
1353 | } | |
1354 | break; | |
1355 | ||
1356 | case C_ESTAT: | |
1357 | /* End of static block. */ | |
1358 | static_block_base = 0; | |
1359 | static_block_section = -1; | |
1360 | break; | |
1361 | ||
1362 | case C_ARG: | |
1363 | case C_REGPARM: | |
1364 | case C_REG: | |
1365 | case C_TPDEF: | |
1366 | case C_STRTAG: | |
1367 | case C_UNTAG: | |
1368 | case C_ENTAG: | |
1369 | { | |
3e43a32a MS |
1370 | complaint (&symfile_complaints, |
1371 | _("Unrecognized storage class %d."), | |
23136709 | 1372 | cs->c_sclass); |
c906108c SS |
1373 | } |
1374 | break; | |
1375 | ||
1376 | case C_LABEL: | |
1377 | case C_NULL: | |
1378 | /* Ignore these. */ | |
1379 | break; | |
1380 | ||
1381 | case C_HIDEXT: | |
1382 | case C_STAT: | |
1383 | break; | |
1384 | ||
1385 | case C_BINCL: | |
1386 | /* beginning of include file */ | |
1387 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
1388 | order. Thus, when wee see them, we might not know enough info | |
1389 | to process them. Thus, we'll be saving them into a table | |
1390 | (inclTable) and postpone their processing. */ | |
1391 | ||
1392 | record_include_begin (cs); | |
1393 | break; | |
1394 | ||
1395 | case C_EINCL: | |
1396 | /* End of include file. */ | |
1397 | /* See the comment after case C_BINCL. */ | |
1398 | record_include_end (cs); | |
1399 | break; | |
1400 | ||
1401 | case C_BLOCK: | |
7ecb6532 | 1402 | if (strcmp (cs->c_name, ".bb") == 0) |
c906108c SS |
1403 | { |
1404 | depth++; | |
1405 | new = push_context (depth, | |
1406 | (cs->c_value | |
1407 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1408 | SECT_OFF_TEXT (objfile)))); |
c906108c | 1409 | } |
7ecb6532 | 1410 | else if (strcmp (cs->c_name, ".eb") == 0) |
c906108c SS |
1411 | { |
1412 | if (context_stack_depth <= 0) | |
3e43a32a | 1413 | { /* We attempted to pop an empty context stack */ |
23136709 | 1414 | eb_complaint (cs->c_symnum); |
c906108c SS |
1415 | break; |
1416 | } | |
1417 | new = pop_context (); | |
1418 | if (depth-- != new->depth) | |
1419 | { | |
23136709 | 1420 | eb_complaint (cs->c_symnum); |
c906108c SS |
1421 | break; |
1422 | } | |
1423 | if (local_symbols && context_stack_depth > 0) | |
1424 | { | |
1425 | /* Make a block for the local symbols within. */ | |
1426 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1427 | new->start_addr, | |
1428 | (cs->c_value | |
1429 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1430 | SECT_OFF_TEXT (objfile))), |
c906108c SS |
1431 | objfile); |
1432 | } | |
1433 | local_symbols = new->locals; | |
1434 | } | |
1435 | break; | |
1436 | ||
1437 | default: | |
1438 | process_xcoff_symbol (cs, objfile); | |
1439 | break; | |
1440 | } | |
1441 | } | |
1442 | ||
1443 | if (last_source_file) | |
1444 | { | |
1445 | struct symtab *s; | |
1446 | ||
1447 | complete_symtab (filestring, file_start_addr); | |
1448 | cur_src_end_addr = file_end_addr; | |
b8fbeb18 | 1449 | s = end_symtab (file_end_addr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1450 | /* When reading symbols for the last C_FILE of the objfile, try |
1451 | to make sure that we set pst->symtab to the symtab for the | |
1452 | file, not to the _globals_ symtab. I'm not sure whether this | |
1453 | actually works right or when/if it comes up. */ | |
1454 | if (pst->symtab == NULL) | |
1455 | pst->symtab = s; | |
1456 | end_stabs (); | |
1457 | } | |
1458 | } | |
1459 | ||
1460 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
1461 | (SYMBOL2) = (struct symbol *) \ | |
4a146b47 | 1462 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); \ |
c906108c | 1463 | *(SYMBOL2) = *(SYMBOL1); |
c5aa993b JM |
1464 | |
1465 | ||
c906108c | 1466 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ |
3e43a32a MS |
1467 | ((ALLOCED) ? (NAME) : obsavestring ((NAME), strlen (NAME), \ |
1468 | &objfile->objfile_obstack)) | |
c906108c SS |
1469 | |
1470 | ||
c906108c SS |
1471 | /* process one xcoff symbol. */ |
1472 | ||
1473 | static struct symbol * | |
aa1ee363 | 1474 | process_xcoff_symbol (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
1475 | { |
1476 | struct symbol onesymbol; | |
52f0bd74 | 1477 | struct symbol *sym = &onesymbol; |
c906108c SS |
1478 | struct symbol *sym2 = NULL; |
1479 | char *name, *pp; | |
1480 | ||
1481 | int sec; | |
1482 | CORE_ADDR off; | |
1483 | ||
1484 | if (cs->c_secnum < 0) | |
1485 | { | |
1486 | /* The value is a register number, offset within a frame, etc., | |
c5aa993b | 1487 | and does not get relocated. */ |
c906108c SS |
1488 | off = 0; |
1489 | sec = -1; | |
1490 | } | |
1491 | else | |
1492 | { | |
1493 | sec = secnum_to_section (cs->c_secnum, objfile); | |
1494 | off = ANOFFSET (objfile->section_offsets, sec); | |
1495 | } | |
1496 | ||
1497 | name = cs->c_name; | |
1498 | if (name[0] == '.') | |
1499 | ++name; | |
1500 | ||
1501 | memset (sym, '\0', sizeof (struct symbol)); | |
1502 | ||
1503 | /* default assumptions */ | |
7a78ae4e | 1504 | SYMBOL_VALUE_ADDRESS (sym) = cs->c_value + off; |
176620f1 | 1505 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1506 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); |
1507 | ||
1508 | if (ISFCN (cs->c_type)) | |
1509 | { | |
1510 | /* At this point, we don't know the type of the function. This | |
c5aa993b JM |
1511 | will be patched with the type from its stab entry later on in |
1512 | patch_block_stabs (), unless the file was compiled without -g. */ | |
c906108c | 1513 | |
3567439c | 1514 | SYMBOL_SET_LINKAGE_NAME (sym, SYMNAME_ALLOC (name, symname_alloced)); |
46bf5051 | 1515 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_text_symbol; |
c906108c SS |
1516 | |
1517 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1518 | SYMBOL_DUP (sym, sym2); | |
1519 | ||
1520 | if (cs->c_sclass == C_EXT) | |
1521 | add_symbol_to_list (sym2, &global_symbols); | |
1522 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1523 | add_symbol_to_list (sym2, &file_symbols); | |
1524 | } | |
1525 | else | |
1526 | { | |
1527 | /* In case we can't figure out the type, provide default. */ | |
46bf5051 | 1528 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
1529 | |
1530 | switch (cs->c_sclass) | |
1531 | { | |
1532 | #if 0 | |
c5aa993b JM |
1533 | /* The values of functions and global symbols are now resolved |
1534 | via the global_sym_chain in stabsread.c. */ | |
c906108c SS |
1535 | case C_FUN: |
1536 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1537 | add_stab_to_list (name, &global_stabs); | |
1538 | else | |
1539 | add_stab_to_list (name, &file_stabs); | |
1540 | break; | |
1541 | ||
1542 | case C_GSYM: | |
1543 | add_stab_to_list (name, &global_stabs); | |
1544 | break; | |
1545 | #endif | |
1546 | ||
1547 | case C_BCOMM: | |
1548 | common_block_start (cs->c_name, objfile); | |
1549 | break; | |
1550 | ||
1551 | case C_ECOMM: | |
1552 | common_block_end (objfile); | |
1553 | break; | |
1554 | ||
1555 | default: | |
e2e0b3e5 | 1556 | complaint (&symfile_complaints, _("Unexpected storage class: %d"), |
23136709 | 1557 | cs->c_sclass); |
c906108c SS |
1558 | /* FALLTHROUGH */ |
1559 | ||
1560 | case C_DECL: | |
1561 | case C_PSYM: | |
1562 | case C_RPSYM: | |
1563 | case C_ECOML: | |
1564 | case C_LSYM: | |
1565 | case C_RSYM: | |
1566 | case C_GSYM: | |
1567 | ||
1568 | { | |
1569 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1570 | if (sym != NULL) | |
1571 | { | |
1572 | SYMBOL_SECTION (sym) = sec; | |
1573 | } | |
1574 | return sym; | |
1575 | } | |
1576 | ||
1577 | case C_STSYM: | |
1578 | ||
1579 | /* For xlc (not GCC), the 'V' symbol descriptor is used for | |
1580 | all statics and we need to distinguish file-scope versus | |
1581 | function-scope using within_function. We do this by | |
1582 | changing the string we pass to define_symbol to use 'S' | |
1583 | where we need to, which is not necessarily super-clean, | |
1584 | but seems workable enough. */ | |
1585 | ||
c5aa993b | 1586 | if (*name == ':' || (pp = (char *) strchr (name, ':')) == NULL) |
c906108c SS |
1587 | return NULL; |
1588 | ||
1589 | ++pp; | |
1590 | if (*pp == 'V' && !within_function) | |
1591 | *pp = 'S'; | |
1592 | sym = define_symbol ((cs->c_value | |
1593 | + ANOFFSET (objfile->section_offsets, | |
1594 | static_block_section)), | |
1595 | cs->c_name, 0, 0, objfile); | |
1596 | if (sym != NULL) | |
1597 | { | |
7a78ae4e | 1598 | SYMBOL_VALUE_ADDRESS (sym) += static_block_base; |
c906108c SS |
1599 | SYMBOL_SECTION (sym) = static_block_section; |
1600 | } | |
1601 | return sym; | |
1602 | ||
1603 | } | |
1604 | } | |
1605 | return sym2; | |
1606 | } | |
1607 | ||
1608 | /* Extract the file name from the aux entry of a C_FILE symbol. | |
1609 | Result is in static storage and is only good for temporary use. */ | |
1610 | ||
1611 | static char * | |
fba45db2 | 1612 | coff_getfilename (union internal_auxent *aux_entry, struct objfile *objfile) |
c906108c SS |
1613 | { |
1614 | static char buffer[BUFSIZ]; | |
1615 | ||
1616 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
3e43a32a MS |
1617 | strcpy (buffer, ((struct coff_symfile_info *) |
1618 | objfile->deprecated_sym_private)->strtbl | |
c906108c SS |
1619 | + aux_entry->x_file.x_n.x_offset); |
1620 | else | |
1621 | { | |
1622 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1623 | buffer[FILNMLEN] = '\0'; | |
1624 | } | |
1625 | return (buffer); | |
1626 | } | |
1627 | ||
1628 | /* Set *SYMBOL to symbol number symno in symtbl. */ | |
1629 | static void | |
fba45db2 | 1630 | read_symbol (struct internal_syment *symbol, int symno) |
c906108c | 1631 | { |
3e43a32a MS |
1632 | int nsyms |
1633 | = ((struct coff_symfile_info *) | |
1634 | this_symtab_psymtab->objfile->deprecated_sym_private)->symtbl_num_syms; | |
1635 | char *stbl = ((struct coff_symfile_info *) | |
1636 | this_symtab_psymtab->objfile->deprecated_sym_private)->symtbl; | |
a109c7c1 | 1637 | |
c906108c SS |
1638 | if (symno < 0 || symno >= nsyms) |
1639 | { | |
e2e0b3e5 | 1640 | complaint (&symfile_complaints, _("Invalid symbol offset")); |
c906108c SS |
1641 | symbol->n_value = 0; |
1642 | symbol->n_scnum = -1; | |
1643 | return; | |
1644 | } | |
1645 | bfd_coff_swap_sym_in (this_symtab_psymtab->objfile->obfd, | |
c5aa993b | 1646 | stbl + (symno * local_symesz), |
c906108c SS |
1647 | symbol); |
1648 | } | |
c5aa993b | 1649 | |
c906108c SS |
1650 | /* Get value corresponding to symbol number symno in symtbl. */ |
1651 | ||
470d5666 | 1652 | static CORE_ADDR |
fba45db2 | 1653 | read_symbol_nvalue (int symno) |
c906108c SS |
1654 | { |
1655 | struct internal_syment symbol[1]; | |
1656 | ||
1657 | read_symbol (symbol, symno); | |
c5aa993b | 1658 | return symbol->n_value; |
c906108c SS |
1659 | } |
1660 | ||
1661 | ||
1662 | /* Find the address of the function corresponding to symno, where | |
1663 | symno is the symbol pointed to by the linetable. */ | |
1664 | ||
1665 | static int | |
fba45db2 | 1666 | read_symbol_lineno (int symno) |
c906108c | 1667 | { |
7a78ae4e | 1668 | struct objfile *objfile = this_symtab_psymtab->objfile; |
7af35dad | 1669 | int xcoff64 = bfd_xcoff_is_xcoff64 (objfile->obfd); |
7a78ae4e ND |
1670 | |
1671 | struct coff_symfile_info *info = | |
0a6ddd08 | 1672 | (struct coff_symfile_info *)objfile->deprecated_sym_private; |
7a78ae4e ND |
1673 | int nsyms = info->symtbl_num_syms; |
1674 | char *stbl = info->symtbl; | |
1675 | char *strtbl = info->strtbl; | |
1676 | ||
c906108c SS |
1677 | struct internal_syment symbol[1]; |
1678 | union internal_auxent main_aux[1]; | |
1679 | ||
1680 | if (symno < 0) | |
1681 | { | |
23136709 | 1682 | bf_notfound_complaint (); |
c906108c SS |
1683 | return 0; |
1684 | } | |
1685 | ||
1686 | /* Note that just searching for a short distance (e.g. 50 symbols) | |
1687 | is not enough, at least in the following case. | |
1688 | ||
1689 | .extern foo | |
1690 | [many .stabx entries] | |
1691 | [a few functions, referring to foo] | |
1692 | .globl foo | |
1693 | .bf | |
1694 | ||
1695 | What happens here is that the assembler moves the .stabx entries | |
1696 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1697 | all the stabx entries. See PR gdb/2222. */ | |
1698 | ||
1699 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1700 | If I understand things correctly it would need to be done only for | |
1701 | the duration of a single psymtab to symtab conversion. */ | |
1702 | while (symno < nsyms) | |
1703 | { | |
1704 | bfd_coff_swap_sym_in (symfile_bfd, | |
1705 | stbl + (symno * local_symesz), symbol); | |
7a78ae4e ND |
1706 | if (symbol->n_sclass == C_FCN) |
1707 | { | |
1708 | char *name = xcoff64 ? strtbl + symbol->n_offset : symbol->n_name; | |
a109c7c1 | 1709 | |
7ecb6532 | 1710 | if (strcmp (name, ".bf") == 0) |
7a78ae4e ND |
1711 | goto gotit; |
1712 | } | |
c906108c SS |
1713 | symno += symbol->n_numaux + 1; |
1714 | } | |
1715 | ||
23136709 | 1716 | bf_notfound_complaint (); |
c906108c SS |
1717 | return 0; |
1718 | ||
1719 | gotit: | |
1720 | /* take aux entry and return its lineno */ | |
1721 | symno++; | |
7a78ae4e | 1722 | bfd_coff_swap_aux_in (objfile->obfd, stbl + symno * local_symesz, |
c906108c SS |
1723 | symbol->n_type, symbol->n_sclass, |
1724 | 0, symbol->n_numaux, main_aux); | |
1725 | ||
1726 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1727 | } | |
1728 | ||
1729 | /* Support for line number handling */ | |
1730 | ||
1731 | /* This function is called for every section; it finds the outer limits | |
1732 | * of the line table (minimum and maximum file offset) so that the | |
1733 | * mainline code can read the whole thing for efficiency. | |
1734 | */ | |
1735 | static void | |
7be0c536 | 1736 | find_linenos (struct bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
1737 | { |
1738 | struct coff_symfile_info *info; | |
1739 | int size, count; | |
1740 | file_ptr offset, maxoff; | |
1741 | ||
1742 | count = asect->lineno_count; | |
1743 | ||
7ecb6532 | 1744 | if (strcmp (asect->name, ".text") != 0 || count == 0) |
c906108c SS |
1745 | return; |
1746 | ||
1747 | size = count * coff_data (abfd)->local_linesz; | |
c5aa993b | 1748 | info = (struct coff_symfile_info *) vpinfo; |
c906108c SS |
1749 | offset = asect->line_filepos; |
1750 | maxoff = offset + size; | |
1751 | ||
1752 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1753 | info->min_lineno_offset = offset; | |
1754 | ||
1755 | if (maxoff > info->max_lineno_offset) | |
1756 | info->max_lineno_offset = maxoff; | |
1757 | } | |
1758 | \f | |
a14ed312 | 1759 | static void xcoff_psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c SS |
1760 | |
1761 | static void | |
fba45db2 | 1762 | xcoff_psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c SS |
1763 | { |
1764 | struct cleanup *old_chain; | |
1765 | int i; | |
c5aa993b | 1766 | |
c906108c SS |
1767 | if (!pst) |
1768 | return; | |
1769 | ||
1770 | if (pst->readin) | |
1771 | { | |
1772 | fprintf_unfiltered | |
1773 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1774 | pst->filename); | |
1775 | return; | |
1776 | } | |
1777 | ||
1778 | /* Read in all partial symtabs on which this one is dependent */ | |
1779 | for (i = 0; i < pst->number_of_dependencies; i++) | |
1780 | if (!pst->dependencies[i]->readin) | |
1781 | { | |
1782 | /* Inform about additional files that need to be read in. */ | |
1783 | if (info_verbose) | |
1784 | { | |
1785 | fputs_filtered (" ", gdb_stdout); | |
1786 | wrap_here (""); | |
1787 | fputs_filtered ("and ", gdb_stdout); | |
1788 | wrap_here (""); | |
1789 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1790 | wrap_here (""); /* Flush output */ |
c906108c SS |
1791 | gdb_flush (gdb_stdout); |
1792 | } | |
1793 | xcoff_psymtab_to_symtab_1 (pst->dependencies[i]); | |
1794 | } | |
1795 | ||
c5aa993b | 1796 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0) |
c906108c SS |
1797 | { |
1798 | /* Init stuff necessary for reading in symbols. */ | |
1799 | stabsread_init (); | |
1800 | buildsym_init (); | |
a0b3c4fd | 1801 | old_chain = make_cleanup (really_free_pendings, 0); |
c906108c SS |
1802 | |
1803 | read_xcoff_symtab (pst); | |
c906108c SS |
1804 | |
1805 | do_cleanups (old_chain); | |
1806 | } | |
1807 | ||
1808 | pst->readin = 1; | |
1809 | } | |
1810 | ||
a14ed312 | 1811 | static void xcoff_psymtab_to_symtab (struct partial_symtab *); |
c906108c SS |
1812 | |
1813 | /* Read in all of the symbols for a given psymtab for real. | |
1814 | Be verbose about it if the user wants that. */ | |
1815 | ||
1816 | static void | |
fba45db2 | 1817 | xcoff_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
1818 | { |
1819 | bfd *sym_bfd; | |
1820 | ||
1821 | if (!pst) | |
1822 | return; | |
1823 | ||
1824 | if (pst->readin) | |
1825 | { | |
1826 | fprintf_unfiltered | |
1827 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1828 | pst->filename); | |
1829 | return; | |
1830 | } | |
1831 | ||
c5aa993b | 1832 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0 |
c906108c SS |
1833 | || pst->number_of_dependencies) |
1834 | { | |
1835 | /* Print the message now, before reading the string table, | |
c5aa993b | 1836 | to avoid disconcerting pauses. */ |
c906108c SS |
1837 | if (info_verbose) |
1838 | { | |
1839 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1840 | gdb_flush (gdb_stdout); | |
1841 | } | |
1842 | ||
1843 | sym_bfd = pst->objfile->obfd; | |
1844 | ||
1845 | next_symbol_text_func = xcoff_next_symbol_text; | |
1846 | ||
1847 | xcoff_psymtab_to_symtab_1 (pst); | |
1848 | ||
1849 | /* Match with global symbols. This only needs to be done once, | |
1850 | after all of the symtabs and dependencies have been read in. */ | |
1851 | scan_file_globals (pst->objfile); | |
1852 | ||
1853 | /* Finish up the debug error message. */ | |
1854 | if (info_verbose) | |
1855 | printf_filtered ("done.\n"); | |
1856 | } | |
1857 | } | |
1858 | \f | |
1859 | static void | |
fba45db2 | 1860 | xcoff_new_init (struct objfile *objfile) |
c906108c SS |
1861 | { |
1862 | stabsread_new_init (); | |
1863 | buildsym_new_init (); | |
1864 | } | |
1865 | ||
1866 | /* Do initialization in preparation for reading symbols from OBJFILE. | |
c5aa993b | 1867 | |
c906108c SS |
1868 | We will only be called if this is an XCOFF or XCOFF-like file. |
1869 | BFD handles figuring out the format of the file, and code in symfile.c | |
1870 | uses BFD's determination to vector to us. */ | |
1871 | ||
1872 | static void | |
fba45db2 | 1873 | xcoff_symfile_init (struct objfile *objfile) |
c906108c SS |
1874 | { |
1875 | /* Allocate struct to keep track of the symfile */ | |
3e43a32a MS |
1876 | objfile->deprecated_sym_private |
1877 | = xmalloc (sizeof (struct coff_symfile_info)); | |
c906108c SS |
1878 | |
1879 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1880 | find this causes a significant slowdown in gdb then we could | |
1881 | set it in the debug symbol readers only when necessary. */ | |
1882 | objfile->flags |= OBJF_REORDERED; | |
1883 | ||
1884 | init_entry_point_info (objfile); | |
1885 | } | |
1886 | ||
1887 | /* Perform any local cleanups required when we are done with a particular | |
1888 | objfile. I.E, we are in the process of discarding all symbol information | |
1889 | for an objfile, freeing up all memory held for it, and unlinking the | |
1890 | objfile struct from the global list of known objfiles. */ | |
1891 | ||
1892 | static void | |
fba45db2 | 1893 | xcoff_symfile_finish (struct objfile *objfile) |
c906108c | 1894 | { |
0a6ddd08 | 1895 | if (objfile->deprecated_sym_private != NULL) |
c906108c | 1896 | { |
0a6ddd08 | 1897 | xfree (objfile->deprecated_sym_private); |
c906108c SS |
1898 | } |
1899 | ||
1900 | /* Start with a fresh include table for the next objfile. */ | |
1901 | if (inclTable) | |
1902 | { | |
b8c9b27d | 1903 | xfree (inclTable); |
c906108c SS |
1904 | inclTable = NULL; |
1905 | } | |
1906 | inclIndx = inclLength = inclDepth = 0; | |
1907 | } | |
1908 | ||
1909 | ||
1910 | static void | |
fba45db2 | 1911 | init_stringtab (bfd *abfd, file_ptr offset, struct objfile *objfile) |
c906108c SS |
1912 | { |
1913 | long length; | |
1914 | int val; | |
1915 | unsigned char lengthbuf[4]; | |
1916 | char *strtbl; | |
1917 | ||
3e43a32a MS |
1918 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->strtbl |
1919 | = NULL; | |
c906108c SS |
1920 | |
1921 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) | |
8a3fe4f8 | 1922 | error (_("cannot seek to string table in %s: %s"), |
c906108c SS |
1923 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1924 | ||
3a42e9d0 | 1925 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c SS |
1926 | length = bfd_h_get_32 (abfd, lengthbuf); |
1927 | ||
1928 | /* If no string table is needed, then the file may end immediately | |
1929 | after the symbols. Just return with `strtbl' set to NULL. */ | |
1930 | ||
1931 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1932 | return; | |
1933 | ||
4a146b47 | 1934 | /* Allocate string table from objfile_obstack. We will need this table |
c906108c SS |
1935 | as long as we have its symbol table around. */ |
1936 | ||
4a146b47 | 1937 | strtbl = (char *) obstack_alloc (&objfile->objfile_obstack, length); |
3e43a32a MS |
1938 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->strtbl |
1939 | = strtbl; | |
c906108c SS |
1940 | |
1941 | /* Copy length buffer, the first byte is usually zero and is | |
1942 | used for stabs with a name length of zero. */ | |
1943 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
1944 | if (length == sizeof lengthbuf) | |
1945 | return; | |
1946 | ||
3a42e9d0 | 1947 | val = bfd_bread (strtbl + sizeof lengthbuf, length - sizeof lengthbuf, abfd); |
c906108c SS |
1948 | |
1949 | if (val != length - sizeof lengthbuf) | |
8a3fe4f8 | 1950 | error (_("cannot read string table from %s: %s"), |
c906108c SS |
1951 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1952 | if (strtbl[length - 1] != '\0') | |
3e43a32a MS |
1953 | error (_("bad symbol file: string table " |
1954 | "does not end with null character")); | |
c906108c SS |
1955 | |
1956 | return; | |
1957 | } | |
1958 | \f | |
1959 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
1960 | have seen one, it is the offset in the line numbers of the line numbers | |
1961 | for the psymtab. */ | |
1962 | static unsigned int first_fun_line_offset; | |
1963 | ||
1964 | static struct partial_symtab *xcoff_start_psymtab | |
a14ed312 KB |
1965 | (struct objfile *, char *, int, |
1966 | struct partial_symbol **, struct partial_symbol **); | |
c906108c SS |
1967 | |
1968 | /* Allocate and partially fill a partial symtab. It will be | |
1969 | completely filled at the end of the symbol list. | |
1970 | ||
1971 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1972 | is the address relative to which its symbols are (incremental) or 0 | |
1973 | (normal). */ | |
1974 | ||
1975 | static struct partial_symtab * | |
fba45db2 KB |
1976 | xcoff_start_psymtab (struct objfile *objfile, char *filename, int first_symnum, |
1977 | struct partial_symbol **global_syms, | |
1978 | struct partial_symbol **static_syms) | |
c906108c SS |
1979 | { |
1980 | struct partial_symtab *result = | |
a109c7c1 MS |
1981 | start_psymtab_common (objfile, objfile->section_offsets, |
1982 | filename, | |
1983 | /* We fill in textlow later. */ | |
1984 | 0, | |
1985 | global_syms, static_syms); | |
c906108c | 1986 | |
e38df1d0 TT |
1987 | result->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
1988 | sizeof (struct symloc)); | |
c5aa993b | 1989 | ((struct symloc *) result->read_symtab_private)->first_symnum = first_symnum; |
c906108c SS |
1990 | result->read_symtab = xcoff_psymtab_to_symtab; |
1991 | ||
1992 | /* Deduce the source language from the filename for this psymtab. */ | |
1993 | psymtab_language = deduce_language_from_filename (filename); | |
1994 | ||
1995 | return result; | |
1996 | } | |
1997 | ||
1998 | static struct partial_symtab *xcoff_end_psymtab | |
a14ed312 KB |
1999 | (struct partial_symtab *, char **, int, int, |
2000 | struct partial_symtab **, int, int); | |
c906108c SS |
2001 | |
2002 | /* Close off the current usage of PST. | |
2003 | Returns PST, or NULL if the partial symtab was empty and thrown away. | |
2004 | ||
2005 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). | |
2006 | ||
2007 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES | |
2008 | are the information for includes and dependencies. */ | |
2009 | ||
2010 | static struct partial_symtab * | |
fba45db2 KB |
2011 | xcoff_end_psymtab (struct partial_symtab *pst, char **include_list, |
2012 | int num_includes, int capping_symbol_number, | |
2013 | struct partial_symtab **dependency_list, | |
2014 | int number_dependencies, int textlow_not_set) | |
c906108c SS |
2015 | { |
2016 | int i; | |
c5aa993b | 2017 | struct objfile *objfile = pst->objfile; |
c906108c SS |
2018 | |
2019 | if (capping_symbol_number != -1) | |
c5aa993b | 2020 | ((struct symloc *) pst->read_symtab_private)->numsyms = |
c906108c | 2021 | capping_symbol_number |
c5aa993b JM |
2022 | - ((struct symloc *) pst->read_symtab_private)->first_symnum; |
2023 | ((struct symloc *) pst->read_symtab_private)->lineno_off = | |
c906108c SS |
2024 | first_fun_line_offset; |
2025 | first_fun_line_offset = 0; | |
3e43a32a MS |
2026 | pst->n_global_syms = objfile->global_psymbols.next |
2027 | - (objfile->global_psymbols.list + pst->globals_offset); | |
2028 | pst->n_static_syms = objfile->static_psymbols.next | |
2029 | - (objfile->static_psymbols.list + pst->statics_offset); | |
c906108c SS |
2030 | |
2031 | pst->number_of_dependencies = number_dependencies; | |
2032 | if (number_dependencies) | |
2033 | { | |
2034 | pst->dependencies = (struct partial_symtab **) | |
8b92e4d5 | 2035 | obstack_alloc (&objfile->objfile_obstack, |
c5aa993b | 2036 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c | 2037 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2038 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2039 | } |
2040 | else | |
2041 | pst->dependencies = 0; | |
2042 | ||
2043 | for (i = 0; i < num_includes; i++) | |
2044 | { | |
2045 | struct partial_symtab *subpst = | |
a109c7c1 | 2046 | allocate_psymtab (include_list[i], objfile); |
c906108c SS |
2047 | |
2048 | subpst->section_offsets = pst->section_offsets; | |
e38df1d0 TT |
2049 | subpst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2050 | sizeof (struct symloc)); | |
c5aa993b JM |
2051 | ((struct symloc *) subpst->read_symtab_private)->first_symnum = 0; |
2052 | ((struct symloc *) subpst->read_symtab_private)->numsyms = 0; | |
c906108c SS |
2053 | subpst->textlow = 0; |
2054 | subpst->texthigh = 0; | |
2055 | ||
2056 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2057 | shared by the entire set of include files. FIXME-someday. */ |
c906108c | 2058 | subpst->dependencies = (struct partial_symtab **) |
8b92e4d5 | 2059 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2060 | sizeof (struct partial_symtab *)); |
2061 | subpst->dependencies[0] = pst; | |
2062 | subpst->number_of_dependencies = 1; | |
2063 | ||
2064 | subpst->globals_offset = | |
2065 | subpst->n_global_syms = | |
c5aa993b JM |
2066 | subpst->statics_offset = |
2067 | subpst->n_static_syms = 0; | |
c906108c SS |
2068 | |
2069 | subpst->readin = 0; | |
2070 | subpst->symtab = 0; | |
2071 | subpst->read_symtab = pst->read_symtab; | |
2072 | } | |
2073 | ||
2074 | sort_pst_symbols (pst); | |
2075 | ||
c906108c SS |
2076 | if (num_includes == 0 |
2077 | && number_dependencies == 0 | |
2078 | && pst->n_global_syms == 0 | |
2079 | && pst->n_static_syms == 0) | |
2080 | { | |
2081 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2082 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2083 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b | 2084 | any symbols in them. There can be a lot of them. */ |
c906108c SS |
2085 | |
2086 | discard_psymtab (pst); | |
2087 | ||
2088 | /* Indicate that psymtab was thrown away. */ | |
c5aa993b | 2089 | pst = (struct partial_symtab *) NULL; |
c906108c SS |
2090 | } |
2091 | return pst; | |
2092 | } | |
2093 | ||
a14ed312 KB |
2094 | static void swap_sym (struct internal_syment *, |
2095 | union internal_auxent *, char **, char **, | |
2096 | unsigned int *, struct objfile *); | |
c906108c SS |
2097 | |
2098 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in | |
2099 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2100 | the symbol and its auxents. */ | |
2101 | ||
2102 | static void | |
fba45db2 KB |
2103 | swap_sym (struct internal_syment *symbol, union internal_auxent *aux, |
2104 | char **name, char **raw, unsigned int *symnump, | |
2105 | struct objfile *objfile) | |
c906108c SS |
2106 | { |
2107 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2108 | if (symbol->n_zeroes) | |
2109 | { | |
2110 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
c5aa993b | 2111 | '\0'-terminated. */ |
c906108c SS |
2112 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') |
2113 | { | |
2114 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2115 | into the minimal symbols. */ | |
2116 | char *p; | |
a109c7c1 | 2117 | |
8b92e4d5 | 2118 | p = obstack_alloc (&objfile->objfile_obstack, E_SYMNMLEN + 1); |
c906108c SS |
2119 | strncpy (p, symbol->n_name, E_SYMNMLEN); |
2120 | p[E_SYMNMLEN] = '\0'; | |
2121 | *name = p; | |
2122 | } | |
2123 | else | |
2124 | /* Point to the unswapped name as that persists as long as the | |
2125 | objfile does. */ | |
c5aa993b | 2126 | *name = ((struct external_syment *) *raw)->e.e_name; |
c906108c SS |
2127 | } |
2128 | else if (symbol->n_sclass & 0x80) | |
2129 | { | |
3e43a32a MS |
2130 | *name = ((struct coff_symfile_info *) |
2131 | objfile->deprecated_sym_private)->debugsec + symbol->n_offset; | |
c906108c SS |
2132 | } |
2133 | else | |
2134 | { | |
3e43a32a MS |
2135 | *name = ((struct coff_symfile_info *) |
2136 | objfile->deprecated_sym_private)->strtbl + symbol->n_offset; | |
c906108c SS |
2137 | } |
2138 | ++*symnump; | |
2139 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2140 | if (symbol->n_numaux > 0) | |
2141 | { | |
2142 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2143 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2144 | ||
2145 | *symnump += symbol->n_numaux; | |
2146 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2147 | } | |
2148 | } | |
2149 | ||
23136709 KB |
2150 | static void |
2151 | function_outside_compilation_unit_complaint (const char *arg1) | |
2152 | { | |
2153 | complaint (&symfile_complaints, | |
3e43a32a MS |
2154 | _("function `%s' appears to be defined " |
2155 | "outside of all compilation units"), | |
23136709 KB |
2156 | arg1); |
2157 | } | |
2158 | ||
c906108c | 2159 | static void |
fba45db2 | 2160 | scan_xcoff_symtab (struct objfile *objfile) |
c906108c | 2161 | { |
40c58d95 | 2162 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b | 2163 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
c906108c SS |
2164 | char *filestring = NULL; |
2165 | ||
2166 | char *namestring; | |
2167 | int past_first_source_file = 0; | |
2168 | bfd *abfd; | |
2169 | asection *bfd_sect; | |
2170 | unsigned int nsyms; | |
2171 | ||
2172 | /* Current partial symtab */ | |
2173 | struct partial_symtab *pst; | |
2174 | ||
2175 | /* List of current psymtab's include files */ | |
2176 | char **psymtab_include_list; | |
2177 | int includes_allocated; | |
2178 | int includes_used; | |
2179 | ||
2180 | /* Index within current psymtab dependency list */ | |
2181 | struct partial_symtab **dependency_list; | |
2182 | int dependencies_used, dependencies_allocated; | |
2183 | ||
2184 | char *sraw_symbol; | |
2185 | struct internal_syment symbol; | |
96baa820 | 2186 | union internal_auxent main_aux[5]; |
c906108c SS |
2187 | unsigned int ssymnum; |
2188 | ||
c5aa993b | 2189 | char *last_csect_name = NULL; /* last seen csect's name and value */ |
c906108c SS |
2190 | CORE_ADDR last_csect_val = 0; |
2191 | int last_csect_sec = 0; | |
c5aa993b | 2192 | int misc_func_recorded = 0; /* true if any misc. function */ |
c906108c SS |
2193 | int textlow_not_set = 1; |
2194 | ||
2195 | pst = (struct partial_symtab *) 0; | |
2196 | ||
2197 | includes_allocated = 30; | |
2198 | includes_used = 0; | |
2199 | psymtab_include_list = (char **) alloca (includes_allocated * | |
2200 | sizeof (char *)); | |
2201 | ||
2202 | dependencies_allocated = 30; | |
2203 | dependencies_used = 0; | |
2204 | dependency_list = | |
2205 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2206 | sizeof (struct partial_symtab *)); | |
2207 | ||
2208 | last_source_file = NULL; | |
2209 | ||
2210 | abfd = objfile->obfd; | |
13c763f4 | 2211 | next_symbol_text_func = xcoff_next_symbol_text; |
c906108c | 2212 | |
3e43a32a MS |
2213 | sraw_symbol = ((struct coff_symfile_info *) |
2214 | objfile->deprecated_sym_private)->symtbl; | |
2215 | nsyms = ((struct coff_symfile_info *) | |
2216 | objfile->deprecated_sym_private)->symtbl_num_syms; | |
c906108c SS |
2217 | ssymnum = 0; |
2218 | while (ssymnum < nsyms) | |
2219 | { | |
7a78ae4e | 2220 | int sclass; |
c906108c SS |
2221 | |
2222 | QUIT; | |
2223 | ||
7a78ae4e ND |
2224 | bfd_coff_swap_sym_in (abfd, sraw_symbol, &symbol); |
2225 | sclass = symbol.n_sclass; | |
2226 | ||
c906108c SS |
2227 | switch (sclass) |
2228 | { | |
2229 | case C_EXT: | |
2230 | case C_HIDEXT: | |
2231 | { | |
2232 | /* The CSECT auxent--always the last auxent. */ | |
2233 | union internal_auxent csect_aux; | |
2234 | unsigned int symnum_before = ssymnum; | |
2235 | ||
96baa820 | 2236 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2237 | &ssymnum, objfile); |
2238 | if (symbol.n_numaux > 1) | |
2239 | { | |
2240 | bfd_coff_swap_aux_in | |
2241 | (objfile->obfd, | |
c5aa993b | 2242 | sraw_symbol - coff_data (abfd)->local_symesz, |
c906108c SS |
2243 | symbol.n_type, |
2244 | symbol.n_sclass, | |
2245 | symbol.n_numaux - 1, | |
2246 | symbol.n_numaux, | |
2247 | &csect_aux); | |
2248 | } | |
2249 | else | |
96baa820 | 2250 | csect_aux = main_aux[0]; |
c906108c | 2251 | |
977adac5 ND |
2252 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2253 | if (namestring[0] == '$' | |
c906108c SS |
2254 | || (namestring[0] == '.' && namestring[1] == '$')) |
2255 | break; | |
2256 | ||
2257 | switch (csect_aux.x_csect.x_smtyp & 0x7) | |
2258 | { | |
2259 | case XTY_SD: | |
2260 | switch (csect_aux.x_csect.x_smclas) | |
2261 | { | |
2262 | case XMC_PR: | |
2263 | if (last_csect_name) | |
2264 | { | |
2265 | /* If no misc. function recorded in the last | |
2266 | seen csect, enter it as a function. This | |
2267 | will take care of functions like strcmp() | |
2268 | compiled by xlc. */ | |
2269 | ||
2270 | if (!misc_func_recorded) | |
2271 | { | |
2272 | RECORD_MINIMAL_SYMBOL | |
2273 | (last_csect_name, last_csect_val, | |
2274 | mst_text, last_csect_sec, | |
2275 | objfile); | |
2276 | } | |
2277 | ||
2278 | if (pst != NULL) | |
2279 | { | |
2280 | /* We have to allocate one psymtab for | |
2281 | each program csect, because their text | |
2282 | sections need not be adjacent. */ | |
2283 | xcoff_end_psymtab | |
2284 | (pst, psymtab_include_list, includes_used, | |
2285 | symnum_before, dependency_list, | |
2286 | dependencies_used, textlow_not_set); | |
2287 | includes_used = 0; | |
2288 | dependencies_used = 0; | |
2289 | /* Give all psymtabs for this source file the same | |
2290 | name. */ | |
2291 | pst = xcoff_start_psymtab | |
d4f3574e | 2292 | (objfile, |
c906108c SS |
2293 | filestring, |
2294 | symnum_before, | |
2295 | objfile->global_psymbols.next, | |
2296 | objfile->static_psymbols.next); | |
2297 | } | |
2298 | } | |
977adac5 ND |
2299 | /* Activate the misc_func_recorded mechanism for |
2300 | compiler- and linker-generated CSECTs like ".strcmp" | |
2301 | and "@FIX1". */ | |
2302 | if (namestring && (namestring[0] == '.' | |
2303 | || namestring[0] == '@')) | |
c906108c SS |
2304 | { |
2305 | last_csect_name = namestring; | |
2306 | last_csect_val = symbol.n_value; | |
2307 | last_csect_sec = | |
2308 | secnum_to_section (symbol.n_scnum, objfile); | |
2309 | } | |
2310 | if (pst != NULL) | |
2311 | { | |
2312 | CORE_ADDR highval = | |
a109c7c1 MS |
2313 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; |
2314 | ||
c906108c SS |
2315 | if (highval > pst->texthigh) |
2316 | pst->texthigh = highval; | |
2317 | if (pst->textlow == 0 || symbol.n_value < pst->textlow) | |
2318 | pst->textlow = symbol.n_value; | |
2319 | } | |
2320 | misc_func_recorded = 0; | |
2321 | break; | |
2322 | ||
2323 | case XMC_RW: | |
6904b546 | 2324 | case XMC_TD: |
c906108c SS |
2325 | /* Data variables are recorded in the minimal symbol |
2326 | table, except for section symbols. */ | |
2327 | if (*namestring != '.') | |
2328 | prim_record_minimal_symbol_and_info | |
2329 | (namestring, symbol.n_value, | |
2330 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
b887350f | 2331 | secnum_to_section (symbol.n_scnum, objfile), |
c906108c SS |
2332 | NULL, objfile); |
2333 | break; | |
2334 | ||
2335 | case XMC_TC0: | |
2336 | if (toc_offset) | |
8a3fe4f8 | 2337 | warning (_("More than one XMC_TC0 symbol found.")); |
c906108c SS |
2338 | toc_offset = symbol.n_value; |
2339 | ||
3e43a32a MS |
2340 | /* Make TOC offset relative to start address of |
2341 | section. */ | |
c906108c SS |
2342 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); |
2343 | if (bfd_sect) | |
2344 | toc_offset -= bfd_section_vma (objfile->obfd, bfd_sect); | |
2345 | break; | |
2346 | ||
2347 | case XMC_TC: | |
2348 | /* These symbols tell us where the TOC entry for a | |
2349 | variable is, not the variable itself. */ | |
2350 | break; | |
2351 | ||
2352 | default: | |
2353 | break; | |
2354 | } | |
2355 | break; | |
2356 | ||
2357 | case XTY_LD: | |
2358 | switch (csect_aux.x_csect.x_smclas) | |
2359 | { | |
2360 | case XMC_PR: | |
2361 | /* A function entry point. */ | |
2362 | ||
2363 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2364 | first_fun_line_offset = | |
96baa820 | 2365 | main_aux[0].x_sym.x_fcnary.x_fcn.x_lnnoptr; |
c906108c SS |
2366 | RECORD_MINIMAL_SYMBOL |
2367 | (namestring, symbol.n_value, | |
2368 | sclass == C_HIDEXT ? mst_file_text : mst_text, | |
2369 | secnum_to_section (symbol.n_scnum, objfile), | |
2370 | objfile); | |
2371 | break; | |
2372 | ||
2373 | case XMC_GL: | |
2374 | /* shared library function trampoline code entry | |
2375 | point. */ | |
2376 | ||
2377 | /* record trampoline code entries as | |
2378 | mst_solib_trampoline symbol. When we lookup mst | |
2379 | symbols, we will choose mst_text over | |
2380 | mst_solib_trampoline. */ | |
2381 | RECORD_MINIMAL_SYMBOL | |
2382 | (namestring, symbol.n_value, | |
2383 | mst_solib_trampoline, | |
2384 | secnum_to_section (symbol.n_scnum, objfile), | |
2385 | objfile); | |
2386 | break; | |
2387 | ||
2388 | case XMC_DS: | |
2389 | /* The symbols often have the same names as | |
2390 | debug symbols for functions, and confuse | |
2391 | lookup_symbol. */ | |
2392 | break; | |
2393 | ||
2394 | default: | |
2395 | ||
2396 | /* xlc puts each variable in a separate csect, | |
2397 | so we get an XTY_SD for each variable. But | |
2398 | gcc puts several variables in a csect, so | |
2399 | that each variable only gets an XTY_LD. We | |
2400 | still need to record them. This will | |
2401 | typically be XMC_RW; I suspect XMC_RO and | |
2402 | XMC_BS might be possible too. */ | |
2403 | if (*namestring != '.') | |
2404 | prim_record_minimal_symbol_and_info | |
2405 | (namestring, symbol.n_value, | |
2406 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
b887350f | 2407 | secnum_to_section (symbol.n_scnum, objfile), |
c906108c SS |
2408 | NULL, objfile); |
2409 | break; | |
2410 | } | |
2411 | break; | |
2412 | ||
2413 | case XTY_CM: | |
2414 | switch (csect_aux.x_csect.x_smclas) | |
2415 | { | |
2416 | case XMC_RW: | |
2417 | case XMC_BS: | |
2418 | /* Common variables are recorded in the minimal symbol | |
2419 | table, except for section symbols. */ | |
2420 | if (*namestring != '.') | |
2421 | prim_record_minimal_symbol_and_info | |
2422 | (namestring, symbol.n_value, | |
2423 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, | |
b887350f | 2424 | secnum_to_section (symbol.n_scnum, objfile), |
c906108c SS |
2425 | NULL, objfile); |
2426 | break; | |
2427 | } | |
2428 | break; | |
2429 | ||
2430 | default: | |
2431 | break; | |
2432 | } | |
2433 | } | |
2434 | break; | |
2435 | case C_FILE: | |
2436 | { | |
2437 | unsigned int symnum_before; | |
2438 | ||
2439 | symnum_before = ssymnum; | |
96baa820 | 2440 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2441 | &ssymnum, objfile); |
2442 | ||
2443 | /* See if the last csect needs to be recorded. */ | |
2444 | ||
2445 | if (last_csect_name && !misc_func_recorded) | |
2446 | { | |
c906108c SS |
2447 | /* If no misc. function recorded in the last seen csect, enter |
2448 | it as a function. This will take care of functions like | |
2449 | strcmp() compiled by xlc. */ | |
2450 | ||
2451 | RECORD_MINIMAL_SYMBOL | |
2452 | (last_csect_name, last_csect_val, | |
2453 | mst_text, last_csect_sec, objfile); | |
2454 | } | |
2455 | ||
2456 | if (pst) | |
2457 | { | |
2458 | xcoff_end_psymtab (pst, psymtab_include_list, includes_used, | |
2459 | symnum_before, dependency_list, | |
2460 | dependencies_used, textlow_not_set); | |
2461 | includes_used = 0; | |
2462 | dependencies_used = 0; | |
2463 | } | |
2464 | first_fun_line_offset = 0; | |
2465 | ||
2466 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2467 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2468 | do things the standard COFF way and put it in the auxent. | |
2469 | We use the auxent if the symbol is ".file" and an auxent | |
2470 | exists, otherwise use the symbol itself. */ | |
2471 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2472 | { | |
96baa820 | 2473 | filestring = coff_getfilename (&main_aux[0], objfile); |
c906108c SS |
2474 | } |
2475 | else | |
2476 | filestring = namestring; | |
2477 | ||
d4f3574e | 2478 | pst = xcoff_start_psymtab (objfile, |
c906108c SS |
2479 | filestring, |
2480 | symnum_before, | |
2481 | objfile->global_psymbols.next, | |
2482 | objfile->static_psymbols.next); | |
2483 | last_csect_name = NULL; | |
2484 | } | |
2485 | break; | |
2486 | ||
2487 | default: | |
2488 | { | |
23136709 | 2489 | complaint (&symfile_complaints, |
3e43a32a MS |
2490 | _("Storage class %d not recognized during scan"), |
2491 | sclass); | |
c906108c SS |
2492 | } |
2493 | /* FALLTHROUGH */ | |
2494 | ||
2495 | /* C_FCN is .bf and .ef symbols. I think it is sufficient | |
2496 | to handle only the C_FUN and C_EXT. */ | |
2497 | case C_FCN: | |
2498 | ||
2499 | case C_BSTAT: | |
2500 | case C_ESTAT: | |
2501 | case C_ARG: | |
2502 | case C_REGPARM: | |
2503 | case C_REG: | |
2504 | case C_TPDEF: | |
2505 | case C_STRTAG: | |
2506 | case C_UNTAG: | |
2507 | case C_ENTAG: | |
2508 | case C_LABEL: | |
2509 | case C_NULL: | |
2510 | ||
2511 | /* C_EINCL means we are switching back to the main file. But there | |
2512 | is no reason to care; the only thing we want to know about | |
2513 | includes is the names of all the included (.h) files. */ | |
2514 | case C_EINCL: | |
2515 | ||
2516 | case C_BLOCK: | |
2517 | ||
2518 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2519 | used instead. */ | |
2520 | case C_STAT: | |
2521 | ||
2522 | /* I don't think the name of the common block (as opposed to the | |
2523 | variables within it) is something which is user visible | |
2524 | currently. */ | |
2525 | case C_BCOMM: | |
2526 | case C_ECOMM: | |
2527 | ||
2528 | case C_PSYM: | |
2529 | case C_RPSYM: | |
2530 | ||
2531 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2532 | so C_LSYM would appear to be only for locals. */ | |
2533 | case C_LSYM: | |
2534 | ||
2535 | case C_AUTO: | |
2536 | case C_RSYM: | |
2537 | { | |
2538 | /* We probably could save a few instructions by assuming that | |
2539 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
7a78ae4e | 2540 | int naux1 = symbol.n_numaux + 1; |
a109c7c1 | 2541 | |
c906108c | 2542 | ssymnum += naux1; |
7a78ae4e | 2543 | sraw_symbol += bfd_coff_symesz (abfd) * naux1; |
c906108c SS |
2544 | } |
2545 | break; | |
2546 | ||
2547 | case C_BINCL: | |
d5d0a62f EZ |
2548 | { |
2549 | /* Mark down an include file in the current psymtab */ | |
2550 | enum language tmp_language; | |
a109c7c1 | 2551 | |
d5d0a62f EZ |
2552 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2553 | &ssymnum, objfile); | |
2554 | ||
2555 | tmp_language = deduce_language_from_filename (namestring); | |
2556 | ||
2557 | /* Only change the psymtab's language if we've learned | |
2558 | something useful (eg. tmp_language is not language_unknown). | |
2559 | In addition, to match what start_subfile does, never change | |
2560 | from C++ to C. */ | |
2561 | if (tmp_language != language_unknown | |
2562 | && (tmp_language != language_c | |
2563 | || psymtab_language != language_cplus)) | |
2564 | psymtab_language = tmp_language; | |
2565 | ||
2566 | /* In C++, one may expect the same filename to come round many | |
2567 | times, when code is coming alternately from the main file | |
2568 | and from inline functions in other files. So I check to see | |
2569 | if this is a file we've seen before -- either the main | |
2570 | source file, or a previously included file. | |
2571 | ||
2572 | This seems to be a lot of time to be spending on N_SOL, but | |
2573 | things like "break c-exp.y:435" need to work (I | |
2574 | suppose the psymtab_include_list could be hashed or put | |
2575 | in a binary tree, if profiling shows this is a major hog). */ | |
7ecb6532 | 2576 | if (pst && strcmp (namestring, pst->filename) == 0) |
d5d0a62f | 2577 | continue; |
a109c7c1 | 2578 | |
d5d0a62f | 2579 | { |
aa1ee363 | 2580 | int i; |
a109c7c1 | 2581 | |
d5d0a62f | 2582 | for (i = 0; i < includes_used; i++) |
7ecb6532 | 2583 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
d5d0a62f EZ |
2584 | { |
2585 | i = -1; | |
2586 | break; | |
2587 | } | |
2588 | if (i == -1) | |
2589 | continue; | |
2590 | } | |
2591 | psymtab_include_list[includes_used++] = namestring; | |
2592 | if (includes_used >= includes_allocated) | |
2593 | { | |
2594 | char **orig = psymtab_include_list; | |
c906108c | 2595 | |
d5d0a62f EZ |
2596 | psymtab_include_list = (char **) |
2597 | alloca ((includes_allocated *= 2) * | |
2598 | sizeof (char *)); | |
4efb68b1 | 2599 | memcpy (psymtab_include_list, orig, |
d5d0a62f EZ |
2600 | includes_used * sizeof (char *)); |
2601 | } | |
2602 | continue; | |
2603 | } | |
c906108c SS |
2604 | case C_FUN: |
2605 | /* The value of the C_FUN is not the address of the function (it | |
2606 | appears to be the address before linking), but as long as it | |
2607 | is smaller than the actual address, then find_pc_partial_function | |
2608 | will use the minimal symbols instead. I hope. */ | |
2609 | ||
2610 | case C_GSYM: | |
2611 | case C_ECOML: | |
2612 | case C_DECL: | |
2613 | case C_STSYM: | |
d5d0a62f | 2614 | { |
d5d0a62f | 2615 | char *p; |
a109c7c1 | 2616 | |
d5d0a62f EZ |
2617 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2618 | &ssymnum, objfile); | |
2619 | ||
2620 | p = (char *) strchr (namestring, ':'); | |
2621 | if (!p) | |
2622 | continue; /* Not a debugging symbol. */ | |
2623 | ||
2624 | /* Main processing section for debugging symbols which | |
2625 | the initial read through the symbol tables needs to worry | |
2626 | about. If we reach this point, the symbol which we are | |
2627 | considering is definitely one we are interested in. | |
2628 | p must also contain the (valid) index into the namestring | |
2629 | which indicates the debugging type symbol. */ | |
2630 | ||
2631 | switch (p[1]) | |
2632 | { | |
2633 | case 'S': | |
3e43a32a MS |
2634 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2635 | SECT_OFF_DATA (objfile)); | |
149ad273 | 2636 | |
5e2b427d | 2637 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 2638 | namestring = gdbarch_static_transform_name |
5e2b427d | 2639 | (gdbarch, namestring); |
149ad273 | 2640 | |
04a679b8 | 2641 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2642 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f EZ |
2643 | &objfile->static_psymbols, |
2644 | 0, symbol.n_value, | |
2645 | psymtab_language, objfile); | |
2646 | continue; | |
2647 | ||
2648 | case 'G': | |
3e43a32a MS |
2649 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2650 | SECT_OFF_DATA (objfile)); | |
d5d0a62f EZ |
2651 | /* The addresses in these entries are reported to be |
2652 | wrong. See the code that reads 'G's for symtabs. */ | |
04a679b8 | 2653 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2654 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f EZ |
2655 | &objfile->global_psymbols, |
2656 | 0, symbol.n_value, | |
2657 | psymtab_language, objfile); | |
2658 | continue; | |
2659 | ||
2660 | case 'T': | |
2661 | /* When a 'T' entry is defining an anonymous enum, it | |
2662 | may have a name which is the empty string, or a | |
2663 | single space. Since they're not really defining a | |
2664 | symbol, those shouldn't go in the partial symbol | |
2665 | table. We do pick up the elements of such enums at | |
2666 | 'check_enum:', below. */ | |
2667 | if (p >= namestring + 2 | |
2668 | || (p == namestring + 1 | |
2669 | && namestring[0] != ' ')) | |
2670 | { | |
04a679b8 | 2671 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2672 | STRUCT_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2673 | &objfile->static_psymbols, |
2674 | symbol.n_value, 0, | |
2675 | psymtab_language, objfile); | |
2676 | if (p[2] == 't') | |
2677 | { | |
2678 | /* Also a typedef with the same name. */ | |
04a679b8 | 2679 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2680 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2681 | &objfile->static_psymbols, |
2682 | symbol.n_value, 0, | |
2683 | psymtab_language, objfile); | |
2684 | p += 1; | |
2685 | } | |
d5d0a62f EZ |
2686 | } |
2687 | goto check_enum; | |
2688 | ||
2689 | case 't': | |
2690 | if (p != namestring) /* a name is there, not just :T... */ | |
2691 | { | |
04a679b8 | 2692 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2693 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f EZ |
2694 | &objfile->static_psymbols, |
2695 | symbol.n_value, 0, | |
2696 | psymtab_language, objfile); | |
2697 | } | |
2698 | check_enum: | |
2699 | /* If this is an enumerated type, we need to | |
2700 | add all the enum constants to the partial symbol | |
2701 | table. This does not cover enums without names, e.g. | |
2702 | "enum {a, b} c;" in C, but fortunately those are | |
2703 | rare. There is no way for GDB to find those from the | |
2704 | enum type without spending too much time on it. Thus | |
2705 | to solve this problem, the compiler needs to put out the | |
2706 | enum in a nameless type. GCC2 does this. */ | |
2707 | ||
2708 | /* We are looking for something of the form | |
2709 | <name> ":" ("t" | "T") [<number> "="] "e" | |
2710 | {<constant> ":" <value> ","} ";". */ | |
2711 | ||
2712 | /* Skip over the colon and the 't' or 'T'. */ | |
2713 | p += 2; | |
2714 | /* This type may be given a number. Also, numbers can come | |
2715 | in pairs like (0,26). Skip over it. */ | |
2716 | while ((*p >= '0' && *p <= '9') | |
2717 | || *p == '(' || *p == ',' || *p == ')' | |
2718 | || *p == '=') | |
2719 | p++; | |
2720 | ||
2721 | if (*p++ == 'e') | |
2722 | { | |
3e43a32a MS |
2723 | /* The aix4 compiler emits extra crud before the |
2724 | members. */ | |
d5d0a62f EZ |
2725 | if (*p == '-') |
2726 | { | |
2727 | /* Skip over the type (?). */ | |
2728 | while (*p != ':') | |
2729 | p++; | |
2730 | ||
2731 | /* Skip over the colon. */ | |
2732 | p++; | |
2733 | } | |
2734 | ||
2735 | /* We have found an enumerated type. */ | |
2736 | /* According to comments in read_enum_type | |
2737 | a comma could end it instead of a semicolon. | |
2738 | I don't know where that happens. | |
2739 | Accept either. */ | |
2740 | while (*p && *p != ';' && *p != ',') | |
2741 | { | |
2742 | char *q; | |
2743 | ||
2744 | /* Check for and handle cretinous dbx symbol name | |
2745 | continuation! */ | |
2746 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
2747 | p = next_symbol_text (objfile); | |
2748 | ||
2749 | /* Point to the character after the name | |
2750 | of the enum constant. */ | |
2751 | for (q = p; *q && *q != ':'; q++) | |
2752 | ; | |
2753 | /* Note that the value doesn't matter for | |
2754 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 2755 | add_psymbol_to_list (p, q - p, 1, |
176620f1 | 2756 | VAR_DOMAIN, LOC_CONST, |
d5d0a62f EZ |
2757 | &objfile->static_psymbols, 0, |
2758 | 0, psymtab_language, objfile); | |
2759 | /* Point past the name. */ | |
2760 | p = q; | |
2761 | /* Skip over the value. */ | |
2762 | while (*p && *p != ',') | |
2763 | p++; | |
2764 | /* Advance past the comma. */ | |
2765 | if (*p) | |
2766 | p++; | |
2767 | } | |
2768 | } | |
2769 | continue; | |
2770 | ||
2771 | case 'c': | |
2772 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 2773 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2774 | VAR_DOMAIN, LOC_CONST, |
d5d0a62f EZ |
2775 | &objfile->static_psymbols, symbol.n_value, |
2776 | 0, psymtab_language, objfile); | |
2777 | continue; | |
2778 | ||
2779 | case 'f': | |
2780 | if (! pst) | |
2781 | { | |
2782 | int name_len = p - namestring; | |
2783 | char *name = xmalloc (name_len + 1); | |
a109c7c1 | 2784 | |
d5d0a62f EZ |
2785 | memcpy (name, namestring, name_len); |
2786 | name[name_len] = '\0'; | |
23136709 | 2787 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2788 | xfree (name); |
2789 | } | |
3e43a32a MS |
2790 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2791 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2792 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2793 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f EZ |
2794 | &objfile->static_psymbols, |
2795 | 0, symbol.n_value, | |
2796 | psymtab_language, objfile); | |
2797 | continue; | |
2798 | ||
2799 | /* Global functions were ignored here, but now they | |
2800 | are put into the global psymtab like one would expect. | |
2801 | They're also in the minimal symbol table. */ | |
2802 | case 'F': | |
2803 | if (! pst) | |
2804 | { | |
2805 | int name_len = p - namestring; | |
2806 | char *name = xmalloc (name_len + 1); | |
a109c7c1 | 2807 | |
d5d0a62f EZ |
2808 | memcpy (name, namestring, name_len); |
2809 | name[name_len] = '\0'; | |
23136709 | 2810 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2811 | xfree (name); |
2812 | } | |
9f1d5432 PH |
2813 | |
2814 | /* We need only the minimal symbols for these | |
2815 | loader-generated definitions. Keeping the global | |
2816 | symbols leads to "in psymbols but not in symbols" | |
2817 | errors. */ | |
2818 | if (strncmp (namestring, "@FIX", 4) == 0) | |
2819 | continue; | |
2820 | ||
3e43a32a MS |
2821 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2822 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2823 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2824 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f EZ |
2825 | &objfile->global_psymbols, |
2826 | 0, symbol.n_value, | |
2827 | psymtab_language, objfile); | |
2828 | continue; | |
2829 | ||
2830 | /* Two things show up here (hopefully); static symbols of | |
2831 | local scope (static used inside braces) or extensions | |
2832 | of structure symbols. We can ignore both. */ | |
2833 | case 'V': | |
2834 | case '(': | |
2835 | case '0': | |
2836 | case '1': | |
2837 | case '2': | |
2838 | case '3': | |
2839 | case '4': | |
2840 | case '5': | |
2841 | case '6': | |
2842 | case '7': | |
2843 | case '8': | |
2844 | case '9': | |
2845 | case '-': | |
3e43a32a MS |
2846 | case '#': /* For symbol identification (used in |
2847 | live ranges). */ | |
d5d0a62f EZ |
2848 | continue; |
2849 | ||
2850 | case ':': | |
2851 | /* It is a C++ nested symbol. We don't need to record it | |
2852 | (I don't think); if we try to look up foo::bar::baz, | |
2853 | then symbols for the symtab containing foo should get | |
2854 | read in, I think. */ | |
2855 | /* Someone says sun cc puts out symbols like | |
2856 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2857 | which would get here with a symbol type of ':'. */ | |
2858 | continue; | |
2859 | ||
2860 | default: | |
3e43a32a MS |
2861 | /* Unexpected symbol descriptor. The second and |
2862 | subsequent stabs of a continued stab can show up | |
2863 | here. The question is whether they ever can mimic | |
2864 | a normal stab--it would be nice if not, since we | |
2865 | certainly don't want to spend the time searching to | |
2866 | the end of every string looking for a | |
2867 | backslash. */ | |
d5d0a62f | 2868 | |
23136709 | 2869 | complaint (&symfile_complaints, |
e2e0b3e5 | 2870 | _("unknown symbol descriptor `%c'"), p[1]); |
d5d0a62f EZ |
2871 | |
2872 | /* Ignore it; perhaps it is an extension that we don't | |
2873 | know about. */ | |
2874 | continue; | |
2875 | } | |
2876 | } | |
c906108c SS |
2877 | } |
2878 | } | |
2879 | ||
2880 | if (pst) | |
2881 | { | |
2882 | xcoff_end_psymtab (pst, psymtab_include_list, includes_used, | |
2883 | ssymnum, dependency_list, | |
2884 | dependencies_used, textlow_not_set); | |
2885 | } | |
2886 | ||
2887 | /* Record the toc offset value of this symbol table into objfile structure. | |
2888 | If no XMC_TC0 is found, toc_offset should be zero. Another place to obtain | |
2889 | this information would be file auxiliary header. */ | |
2890 | ||
3e43a32a MS |
2891 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->toc_offset |
2892 | = toc_offset; | |
c906108c SS |
2893 | } |
2894 | ||
2895 | /* Return the toc offset value for a given objfile. */ | |
2896 | ||
2897 | CORE_ADDR | |
63807e1d | 2898 | xcoff_get_toc_offset (struct objfile *objfile) |
c906108c SS |
2899 | { |
2900 | if (objfile) | |
3e43a32a MS |
2901 | return ((struct coff_symfile_info *) |
2902 | objfile->deprecated_sym_private)->toc_offset; | |
c906108c SS |
2903 | return 0; |
2904 | } | |
2905 | ||
2906 | /* Scan and build partial symbols for a symbol file. | |
2907 | We have been initialized by a call to dbx_symfile_init, which | |
2908 | put all the relevant info into a "struct dbx_symfile_info", | |
2909 | hung off the objfile structure. | |
2910 | ||
2911 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
2912 | various sections are (depending where the sections were actually loaded). | |
f4352531 | 2913 | */ |
c906108c SS |
2914 | |
2915 | static void | |
f4352531 | 2916 | xcoff_initial_scan (struct objfile *objfile, int symfile_flags) |
c906108c SS |
2917 | { |
2918 | bfd *abfd; | |
2919 | int val; | |
2920 | struct cleanup *back_to; | |
c5aa993b JM |
2921 | int num_symbols; /* # of symbols */ |
2922 | file_ptr symtab_offset; /* symbol table and */ | |
2923 | file_ptr stringtab_offset; /* string table file offsets */ | |
c906108c SS |
2924 | struct coff_symfile_info *info; |
2925 | char *name; | |
2926 | unsigned int size; | |
2927 | ||
0a6ddd08 | 2928 | info = (struct coff_symfile_info *) objfile->deprecated_sym_private; |
c906108c SS |
2929 | symfile_bfd = abfd = objfile->obfd; |
2930 | name = objfile->name; | |
2931 | ||
2932 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2933 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2934 | stringtab_offset = symtab_offset + | |
c5aa993b | 2935 | num_symbols * coff_data (abfd)->local_symesz; |
c906108c SS |
2936 | |
2937 | info->min_lineno_offset = 0; | |
2938 | info->max_lineno_offset = 0; | |
2939 | bfd_map_over_sections (abfd, find_linenos, info); | |
2940 | ||
2941 | if (num_symbols > 0) | |
2942 | { | |
2943 | /* Read the string table. */ | |
2944 | init_stringtab (abfd, stringtab_offset, objfile); | |
2945 | ||
2946 | /* Read the .debug section, if present. */ | |
2947 | { | |
7be0c536 | 2948 | struct bfd_section *secp; |
c906108c SS |
2949 | bfd_size_type length; |
2950 | char *debugsec = NULL; | |
2951 | ||
2952 | secp = bfd_get_section_by_name (abfd, ".debug"); | |
2953 | if (secp) | |
2954 | { | |
2955 | length = bfd_section_size (abfd, secp); | |
2956 | if (length) | |
2957 | { | |
2958 | debugsec = | |
4a146b47 | 2959 | (char *) obstack_alloc (&objfile->objfile_obstack, length); |
c906108c SS |
2960 | |
2961 | if (!bfd_get_section_contents (abfd, secp, debugsec, | |
2962 | (file_ptr) 0, length)) | |
2963 | { | |
8a3fe4f8 | 2964 | error (_("Error reading .debug section of `%s': %s"), |
c906108c SS |
2965 | name, bfd_errmsg (bfd_get_error ())); |
2966 | } | |
2967 | } | |
2968 | } | |
3e43a32a MS |
2969 | ((struct coff_symfile_info *) |
2970 | objfile->deprecated_sym_private)->debugsec | |
2971 | = debugsec; | |
c906108c SS |
2972 | } |
2973 | } | |
2974 | ||
2975 | /* Read the symbols. We keep them in core because we will want to | |
2976 | access them randomly in read_symbol*. */ | |
2977 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); | |
2978 | if (val < 0) | |
8a3fe4f8 | 2979 | error (_("Error reading symbols from %s: %s"), |
c906108c SS |
2980 | name, bfd_errmsg (bfd_get_error ())); |
2981 | size = coff_data (abfd)->local_symesz * num_symbols; | |
0a6ddd08 | 2982 | ((struct coff_symfile_info *) objfile->deprecated_sym_private)->symtbl = |
4a146b47 | 2983 | obstack_alloc (&objfile->objfile_obstack, size); |
3e43a32a MS |
2984 | ((struct coff_symfile_info *) |
2985 | objfile->deprecated_sym_private)->symtbl_num_syms | |
2986 | = num_symbols; | |
c906108c | 2987 | |
3e43a32a MS |
2988 | val = bfd_bread (((struct coff_symfile_info *) |
2989 | objfile->deprecated_sym_private)->symtbl, | |
3a42e9d0 | 2990 | size, abfd); |
c906108c | 2991 | if (val != size) |
e2e0b3e5 | 2992 | perror_with_name (_("reading symbol table")); |
c906108c SS |
2993 | |
2994 | /* If we are reinitializing, or if we have never loaded syms yet, init */ | |
de1d8fb9 | 2995 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
2996 | /* I'm not sure how how good num_symbols is; the rule of thumb in |
2997 | init_psymbol_list was developed for a.out. On the one hand, | |
2998 | num_symbols includes auxents. On the other hand, it doesn't | |
2999 | include N_SLINE. */ | |
3000 | init_psymbol_list (objfile, num_symbols); | |
3001 | ||
3002 | free_pending_blocks (); | |
a0b3c4fd | 3003 | back_to = make_cleanup (really_free_pendings, 0); |
c906108c SS |
3004 | |
3005 | init_minimal_symbol_collection (); | |
56e290f4 | 3006 | make_cleanup_discard_minimal_symbols (); |
c906108c SS |
3007 | |
3008 | /* Now that the symbol table data of the executable file are all in core, | |
3009 | process them and define symbols accordingly. */ | |
3010 | ||
d4f3574e | 3011 | scan_xcoff_symtab (objfile); |
c906108c SS |
3012 | |
3013 | /* Install any minimal symbols that have been collected as the current | |
3014 | minimal symbols for this objfile. */ | |
3015 | ||
3016 | install_minimal_symbols (objfile); | |
3017 | ||
3018 | do_cleanups (back_to); | |
3019 | } | |
3020 | \f | |
d4f3574e | 3021 | static void |
3e43a32a MS |
3022 | xcoff_symfile_offsets (struct objfile *objfile, |
3023 | struct section_addr_info *addrs) | |
c906108c | 3024 | { |
b8fbeb18 | 3025 | asection *sect = NULL; |
c906108c SS |
3026 | int i; |
3027 | ||
a39a16c4 | 3028 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
d4f3574e | 3029 | objfile->section_offsets = (struct section_offsets *) |
8b92e4d5 | 3030 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 3031 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
c906108c | 3032 | |
b8fbeb18 EZ |
3033 | /* Initialize the section indexes for future use. */ |
3034 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
3035 | if (sect) | |
3036 | objfile->sect_index_text = sect->index; | |
3037 | ||
3038 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
3039 | if (sect) | |
3040 | objfile->sect_index_data = sect->index; | |
3041 | ||
3042 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
3043 | if (sect) | |
3044 | objfile->sect_index_bss = sect->index; | |
3045 | ||
3046 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
3047 | if (sect) | |
3048 | objfile->sect_index_rodata = sect->index; | |
3049 | ||
c906108c | 3050 | for (i = 0; i < objfile->num_sections; ++i) |
b8fbeb18 EZ |
3051 | { |
3052 | /* syms_from_objfile kindly subtracts from addr the | |
3053 | bfd_section_vma of the .text section. This strikes me as | |
3054 | wrong--whether the offset to be applied to symbol reading is | |
3055 | relative to the start address of the section depends on the | |
3056 | symbol format. In any event, this whole "addr" concept is | |
3057 | pretty broken (it doesn't handle any section but .text | |
3058 | sensibly), so just ignore the addr parameter and use 0. | |
3059 | rs6000-nat.c will set the correct section offsets via | |
3060 | objfile_relocate. */ | |
f0a58b0b | 3061 | (objfile->section_offsets)->offsets[i] = 0; |
b8fbeb18 | 3062 | } |
c906108c SS |
3063 | } |
3064 | ||
3065 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
3066 | ||
00b5771c | 3067 | static const struct sym_fns xcoff_sym_fns = |
c906108c SS |
3068 | { |
3069 | ||
7a78ae4e | 3070 | /* It is possible that coff and xcoff should be merged as |
c906108c SS |
3071 | they do have fundamental similarities (for example, the extra storage |
3072 | classes used for stabs could presumably be recognized in any COFF file). | |
3073 | However, in addition to obvious things like all the csect hair, there are | |
3074 | some subtler differences between xcoffread.c and coffread.c, notably | |
3075 | the fact that coffread.c has no need to read in all the symbols, but | |
3076 | xcoffread.c reads all the symbols and does in fact randomly access them | |
3077 | (in C_BSTAT and line number processing). */ | |
3078 | ||
7a78ae4e | 3079 | bfd_target_xcoff_flavour, |
c906108c | 3080 | |
3e43a32a MS |
3081 | xcoff_new_init, /* init anything gbl to entire symtab */ |
3082 | xcoff_symfile_init, /* read initial info, setup for sym_read() */ | |
3083 | xcoff_initial_scan, /* read a symbol file into symtab */ | |
3084 | xcoff_symfile_finish, /* finished with file, cleanup */ | |
3085 | xcoff_symfile_offsets, /* xlate offsets ext->int form */ | |
3086 | default_symfile_segments, /* Get segment information from a file. */ | |
3087 | aix_process_linenos, | |
3088 | default_symfile_relocate, /* Relocate a debug section. */ | |
00b5771c | 3089 | &psym_functions |
c906108c SS |
3090 | }; |
3091 | ||
63807e1d PA |
3092 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
3093 | extern initialize_file_ftype _initialize_xcoffread; | |
3094 | ||
c906108c | 3095 | void |
fba45db2 | 3096 | _initialize_xcoffread (void) |
c906108c | 3097 | { |
c5aa993b | 3098 | add_symtab_fns (&xcoff_sym_fns); |
c906108c | 3099 | } |