Commit | Line | Data |
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c906108c | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
e2882c85 | 2 | Copyright (C) 1986-2018 Free Software Foundation, Inc. |
c906108c SS |
3 | Derived from coffread.c, dbxread.c, and a lot of hacking. |
4 | Contributed by IBM Corporation. | |
5 | ||
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | #include "defs.h" | |
22 | #include "bfd.h" | |
23 | ||
24 | #include <sys/types.h> | |
25 | #include <fcntl.h> | |
26 | #include <ctype.h> | |
c0ccb908 | 27 | #ifdef HAVE_SYS_FILE_H |
c906108c SS |
28 | #include <sys/file.h> |
29 | #endif | |
53ce3c39 | 30 | #include <sys/stat.h> |
c906108c SS |
31 | |
32 | #include "coff/internal.h" | |
33 | #include "libcoff.h" /* FIXME, internal data from BFD */ | |
11ed25ac KB |
34 | #include "coff/xcoff.h" |
35 | #include "libxcoff.h" | |
c906108c | 36 | #include "coff/rs6000.h" |
63807e1d | 37 | #include "xcoffread.h" |
c906108c SS |
38 | |
39 | #include "symtab.h" | |
40 | #include "gdbtypes.h" | |
9ab9195f | 41 | /* FIXME: ezannoni/2004-02-13 Verify if the include below is really needed. */ |
c906108c SS |
42 | #include "symfile.h" |
43 | #include "objfiles.h" | |
44 | #include "buildsym.h" | |
45 | #include "stabsread.h" | |
46 | #include "expression.h" | |
c906108c | 47 | #include "complaints.h" |
ccefe4c4 | 48 | #include "psympriv.h" |
c906108c SS |
49 | |
50 | #include "gdb-stabs.h" | |
51 | ||
52 | /* For interface with stabsread.c. */ | |
53 | #include "aout/stab_gnu.h" | |
54 | ||
c906108c | 55 | \f |
b8b98ad1 TT |
56 | /* Key for XCOFF-associated data. */ |
57 | ||
58 | static const struct objfile_data *xcoff_objfile_data_key; | |
59 | ||
c906108c SS |
60 | /* We put a pointer to this structure in the read_symtab_private field |
61 | of the psymtab. */ | |
62 | ||
c5aa993b JM |
63 | struct symloc |
64 | { | |
c906108c | 65 | |
c5aa993b | 66 | /* First symbol number for this file. */ |
c906108c | 67 | |
c5aa993b | 68 | int first_symnum; |
c906108c | 69 | |
c5aa993b JM |
70 | /* Number of symbols in the section of the symbol table devoted to |
71 | this file's symbols (actually, the section bracketed may contain | |
72 | more than just this file's symbols). If numsyms is 0, the only | |
73 | reason for this thing's existence is the dependency list. Nothing | |
74 | else will happen when it is read in. */ | |
c906108c | 75 | |
c5aa993b | 76 | int numsyms; |
c906108c | 77 | |
3e43a32a MS |
78 | /* Position of the start of the line number information for this |
79 | psymtab. */ | |
c5aa993b JM |
80 | unsigned int lineno_off; |
81 | }; | |
c906108c | 82 | |
581e13c1 | 83 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
84 | |
85 | static enum language psymtab_language = language_unknown; | |
c906108c | 86 | \f |
c5aa993b | 87 | |
581e13c1 | 88 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 89 | |
c5aa993b JM |
90 | struct coff_symbol |
91 | { | |
92 | char *c_name; | |
581e13c1 MS |
93 | int c_symnum; /* Symbol number of this entry. */ |
94 | int c_naux; /* 0 if syment only, 1 if syment + auxent. */ | |
086850b2 | 95 | CORE_ADDR c_value; |
c5aa993b JM |
96 | unsigned char c_sclass; |
97 | int c_secnum; | |
98 | unsigned int c_type; | |
99 | }; | |
c906108c | 100 | |
581e13c1 | 101 | /* Last function's saved coff symbol `cs'. */ |
c906108c SS |
102 | |
103 | static struct coff_symbol fcn_cs_saved; | |
104 | ||
105 | static bfd *symfile_bfd; | |
106 | ||
107 | /* Core address of start and end of text of current source file. | |
108 | This is calculated from the first function seen after a C_FILE | |
581e13c1 | 109 | symbol. */ |
c906108c SS |
110 | |
111 | ||
112 | static CORE_ADDR cur_src_end_addr; | |
113 | ||
114 | /* Core address of the end of the first object file. */ | |
115 | ||
116 | static CORE_ADDR first_object_file_end; | |
117 | ||
581e13c1 | 118 | /* Initial symbol-table-debug-string vector length. */ |
c906108c SS |
119 | |
120 | #define INITIAL_STABVECTOR_LENGTH 40 | |
121 | ||
c906108c SS |
122 | /* Size of a COFF symbol. I think it is always 18, so I'm not sure |
123 | there is any reason not to just use a #define, but might as well | |
124 | ask BFD for the size and store it here, I guess. */ | |
125 | ||
c5aa993b | 126 | static unsigned local_symesz; |
c906108c | 127 | |
c5aa993b JM |
128 | struct coff_symfile_info |
129 | { | |
581e13c1 MS |
130 | file_ptr min_lineno_offset; /* Where in file lowest line#s are. */ |
131 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */ | |
c906108c | 132 | |
c5aa993b JM |
133 | /* Pointer to the string table. */ |
134 | char *strtbl; | |
c906108c | 135 | |
c5aa993b JM |
136 | /* Pointer to debug section. */ |
137 | char *debugsec; | |
c906108c | 138 | |
c5aa993b JM |
139 | /* Pointer to the a.out symbol table. */ |
140 | char *symtbl; | |
c906108c | 141 | |
c5aa993b JM |
142 | /* Number of symbols in symtbl. */ |
143 | int symtbl_num_syms; | |
c906108c | 144 | |
c5aa993b JM |
145 | /* Offset in data section to TOC anchor. */ |
146 | CORE_ADDR toc_offset; | |
147 | }; | |
c906108c | 148 | |
b8b98ad1 TT |
149 | /* Convenience macro to access the per-objfile XCOFF data. */ |
150 | ||
151 | #define XCOFF_DATA(objfile) \ | |
152 | ((struct coff_symfile_info *) objfile_data ((objfile), \ | |
153 | xcoff_objfile_data_key)) | |
154 | ||
316a8b21 TG |
155 | /* XCOFF names for dwarf sections. There is no compressed sections. */ |
156 | ||
157 | static const struct dwarf2_debug_sections dwarf2_xcoff_names = { | |
158 | { ".dwinfo", NULL }, | |
159 | { ".dwabrev", NULL }, | |
160 | { ".dwline", NULL }, | |
161 | { ".dwloc", NULL }, | |
43988095 | 162 | { NULL, NULL }, /* debug_loclists */ |
33f914a1 DE |
163 | /* AIX XCOFF defines one, named DWARF section for macro debug information. |
164 | XLC does not generate debug_macinfo for DWARF4 and below. | |
165 | The section is assigned to debug_macro for DWARF5 and above. */ | |
166 | { NULL, NULL }, | |
167 | { ".dwmac", NULL }, | |
316a8b21 | 168 | { ".dwstr", NULL }, |
43988095 | 169 | { NULL, NULL }, /* debug_line_str */ |
316a8b21 | 170 | { ".dwrnges", NULL }, |
43988095 | 171 | { NULL, NULL }, /* debug_rnglists */ |
33f914a1 | 172 | { ".dwpbtyp", NULL }, |
3019eac3 | 173 | { NULL, NULL }, /* debug_addr */ |
316a8b21 TG |
174 | { ".dwframe", NULL }, |
175 | { NULL, NULL }, /* eh_frame */ | |
24d3216f | 176 | { NULL, NULL }, /* gdb_index */ |
927aa2e7 JK |
177 | { NULL, NULL }, /* debug_names */ |
178 | { NULL, NULL }, /* debug_aranges */ | |
24d3216f | 179 | 23 |
316a8b21 TG |
180 | }; |
181 | ||
23136709 KB |
182 | static void |
183 | bf_notfound_complaint (void) | |
184 | { | |
3e43a32a MS |
185 | complaint (&symfile_complaints, |
186 | _("line numbers off, `.bf' symbol not found")); | |
23136709 | 187 | } |
c906108c | 188 | |
23136709 KB |
189 | static void |
190 | ef_complaint (int arg1) | |
191 | { | |
192 | complaint (&symfile_complaints, | |
e2e0b3e5 | 193 | _("Mismatched .ef symbol ignored starting at symnum %d"), arg1); |
23136709 | 194 | } |
c906108c | 195 | |
23136709 KB |
196 | static void |
197 | eb_complaint (int arg1) | |
198 | { | |
199 | complaint (&symfile_complaints, | |
e2e0b3e5 | 200 | _("Mismatched .eb symbol ignored starting at symnum %d"), arg1); |
23136709 | 201 | } |
c906108c | 202 | |
b15cc25c | 203 | static void xcoff_initial_scan (struct objfile *, symfile_add_flags); |
c906108c | 204 | |
8dddcb8f TT |
205 | static void scan_xcoff_symtab (minimal_symbol_reader &, |
206 | struct objfile *); | |
c906108c | 207 | |
a121b7c1 | 208 | static const char *xcoff_next_symbol_text (struct objfile *); |
c906108c | 209 | |
a14ed312 | 210 | static void record_include_begin (struct coff_symbol *); |
c906108c SS |
211 | |
212 | static void | |
a14ed312 KB |
213 | enter_line_range (struct subfile *, unsigned, unsigned, |
214 | CORE_ADDR, CORE_ADDR, unsigned *); | |
c906108c | 215 | |
a14ed312 | 216 | static void init_stringtab (bfd *, file_ptr, struct objfile *); |
c906108c | 217 | |
a14ed312 | 218 | static void xcoff_symfile_init (struct objfile *); |
c906108c | 219 | |
a14ed312 | 220 | static void xcoff_new_init (struct objfile *); |
c906108c | 221 | |
a14ed312 | 222 | static void xcoff_symfile_finish (struct objfile *); |
c906108c | 223 | |
a14ed312 | 224 | static char *coff_getfilename (union internal_auxent *, struct objfile *); |
c906108c | 225 | |
a14ed312 | 226 | static void read_symbol (struct internal_syment *, int); |
c906108c | 227 | |
a14ed312 | 228 | static int read_symbol_lineno (int); |
c906108c | 229 | |
470d5666 | 230 | static CORE_ADDR read_symbol_nvalue (int); |
c906108c | 231 | |
a14ed312 KB |
232 | static struct symbol *process_xcoff_symbol (struct coff_symbol *, |
233 | struct objfile *); | |
c906108c | 234 | |
5c80ed9d | 235 | static void read_xcoff_symtab (struct objfile *, struct partial_symtab *); |
c906108c SS |
236 | |
237 | #if 0 | |
a14ed312 | 238 | static void add_stab_to_list (char *, struct pending_stabs **); |
c906108c SS |
239 | #endif |
240 | ||
a14ed312 | 241 | static int compare_lte (const void *, const void *); |
c906108c | 242 | |
a14ed312 | 243 | static struct linetable *arrange_linetable (struct linetable *); |
c906108c | 244 | |
a14ed312 | 245 | static void record_include_end (struct coff_symbol *); |
c906108c | 246 | |
a14ed312 | 247 | static void process_linenos (CORE_ADDR, CORE_ADDR); |
c906108c | 248 | \f |
c5aa993b | 249 | |
c906108c SS |
250 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
251 | code. */ | |
a14ed312 KB |
252 | static int secnum_to_section (int, struct objfile *); |
253 | static asection *secnum_to_bfd_section (int, struct objfile *); | |
c906108c | 254 | |
c5aa993b JM |
255 | struct find_targ_sec_arg |
256 | { | |
257 | int targ_index; | |
258 | int *resultp; | |
259 | asection **bfd_sect; | |
b8fbeb18 | 260 | struct objfile *objfile; |
c5aa993b | 261 | }; |
c906108c | 262 | |
a14ed312 | 263 | static void find_targ_sec (bfd *, asection *, void *); |
c906108c | 264 | |
c5aa993b | 265 | static void |
4efb68b1 | 266 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 267 | { |
c5aa993b | 268 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
b8fbeb18 | 269 | struct objfile *objfile = args->objfile; |
a109c7c1 | 270 | |
c906108c SS |
271 | if (sect->target_index == args->targ_index) |
272 | { | |
273 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
274 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
b8fbeb18 | 275 | *args->resultp = SECT_OFF_TEXT (objfile); |
c906108c | 276 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) |
b8fbeb18 | 277 | *args->resultp = SECT_OFF_DATA (objfile); |
c906108c | 278 | else |
65cf3563 | 279 | *args->resultp = gdb_bfd_section_index (abfd, sect); |
c906108c SS |
280 | *args->bfd_sect = sect; |
281 | } | |
282 | } | |
283 | ||
ec92004f JB |
284 | /* Search all BFD sections for the section whose target_index is |
285 | equal to N_SCNUM. Set *BFD_SECT to that section. The section's | |
286 | associated index in the objfile's section_offset table is also | |
287 | stored in *SECNUM. | |
288 | ||
289 | If no match is found, *BFD_SECT is set to NULL, and *SECNUM | |
290 | is set to the text section's number. */ | |
a109c7c1 | 291 | |
ec92004f JB |
292 | static void |
293 | xcoff_secnum_to_sections (int n_scnum, struct objfile *objfile, | |
294 | asection **bfd_sect, int *secnum) | |
295 | { | |
c906108c | 296 | struct find_targ_sec_arg args; |
ec92004f JB |
297 | |
298 | args.targ_index = n_scnum; | |
299 | args.resultp = secnum; | |
300 | args.bfd_sect = bfd_sect; | |
b8fbeb18 | 301 | args.objfile = objfile; |
ec92004f JB |
302 | |
303 | *bfd_sect = NULL; | |
304 | *secnum = SECT_OFF_TEXT (objfile); | |
305 | ||
c906108c | 306 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
c906108c SS |
307 | } |
308 | ||
ec92004f JB |
309 | /* Return the section number (SECT_OFF_*) that N_SCNUM points to. */ |
310 | ||
311 | static int | |
312 | secnum_to_section (int n_scnum, struct objfile *objfile) | |
313 | { | |
314 | int secnum; | |
315 | asection *ignored; | |
316 | ||
317 | xcoff_secnum_to_sections (n_scnum, objfile, &ignored, &secnum); | |
318 | return secnum; | |
319 | } | |
320 | ||
321 | /* Return the BFD section that N_SCNUM points to. */ | |
322 | ||
c906108c | 323 | static asection * |
ec92004f | 324 | secnum_to_bfd_section (int n_scnum, struct objfile *objfile) |
c906108c | 325 | { |
ec92004f JB |
326 | int ignored; |
327 | asection *bfd_sect; | |
a109c7c1 | 328 | |
ec92004f JB |
329 | xcoff_secnum_to_sections (n_scnum, objfile, &bfd_sect, &ignored); |
330 | return bfd_sect; | |
c906108c SS |
331 | } |
332 | \f | |
581e13c1 | 333 | /* add a given stab string into given stab vector. */ |
c906108c SS |
334 | |
335 | #if 0 | |
336 | ||
337 | static void | |
fba45db2 | 338 | add_stab_to_list (char *stabname, struct pending_stabs **stabvector) |
c906108c | 339 | { |
c5aa993b JM |
340 | if (*stabvector == NULL) |
341 | { | |
342 | *stabvector = (struct pending_stabs *) | |
343 | xmalloc (sizeof (struct pending_stabs) + | |
344 | INITIAL_STABVECTOR_LENGTH * sizeof (char *)); | |
345 | (*stabvector)->count = 0; | |
346 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
347 | } | |
348 | else if ((*stabvector)->count >= (*stabvector)->length) | |
349 | { | |
350 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
351 | *stabvector = (struct pending_stabs *) | |
352 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + | |
3e43a32a | 353 | (*stabvector)->length * sizeof (char *)); |
c5aa993b JM |
354 | } |
355 | (*stabvector)->stab[(*stabvector)->count++] = stabname; | |
c906108c SS |
356 | } |
357 | ||
358 | #endif | |
c5aa993b | 359 | \f/* *INDENT-OFF* */ |
c906108c SS |
360 | /* Linenos are processed on a file-by-file basis. |
361 | ||
362 | Two reasons: | |
363 | ||
c5aa993b | 364 | 1) xlc (IBM's native c compiler) postpones static function code |
581e13c1 | 365 | emission to the end of a compilation unit. This way it can |
c5aa993b | 366 | determine if those functions (statics) are needed or not, and |
581e13c1 | 367 | can do some garbage collection (I think). This makes line |
c5aa993b JM |
368 | numbers and corresponding addresses unordered, and we end up |
369 | with a line table like: | |
370 | ||
371 | ||
372 | lineno addr | |
373 | foo() 10 0x100 | |
374 | 20 0x200 | |
375 | 30 0x300 | |
376 | ||
377 | foo3() 70 0x400 | |
378 | 80 0x500 | |
379 | 90 0x600 | |
380 | ||
381 | static foo2() | |
382 | 40 0x700 | |
383 | 50 0x800 | |
384 | 60 0x900 | |
385 | ||
386 | and that breaks gdb's binary search on line numbers, if the | |
581e13c1 | 387 | above table is not sorted on line numbers. And that sort |
c5aa993b JM |
388 | should be on function based, since gcc can emit line numbers |
389 | like: | |
390 | ||
391 | 10 0x100 - for the init/test part of a for stmt. | |
392 | 20 0x200 | |
393 | 30 0x300 | |
394 | 10 0x400 - for the increment part of a for stmt. | |
395 | ||
581e13c1 | 396 | arrange_linetable() will do this sorting. |
c5aa993b JM |
397 | |
398 | 2) aix symbol table might look like: | |
399 | ||
400 | c_file // beginning of a new file | |
401 | .bi // beginning of include file | |
402 | .ei // end of include file | |
403 | .bi | |
404 | .ei | |
405 | ||
406 | basically, .bi/.ei pairs do not necessarily encapsulate | |
581e13c1 | 407 | their scope. They need to be recorded, and processed later |
c5aa993b JM |
408 | on when we come the end of the compilation unit. |
409 | Include table (inclTable) and process_linenos() handle | |
410 | that. */ | |
9846de1b | 411 | /* *INDENT-ON* */ |
c906108c | 412 | |
c5aa993b JM |
413 | |
414 | ||
581e13c1 | 415 | /* compare line table entry addresses. */ |
c906108c SS |
416 | |
417 | static int | |
fba45db2 | 418 | compare_lte (const void *lte1p, const void *lte2p) |
c906108c SS |
419 | { |
420 | struct linetable_entry *lte1 = (struct linetable_entry *) lte1p; | |
421 | struct linetable_entry *lte2 = (struct linetable_entry *) lte2p; | |
a109c7c1 | 422 | |
c906108c SS |
423 | return lte1->pc - lte2->pc; |
424 | } | |
425 | ||
581e13c1 MS |
426 | /* Given a line table with function entries are marked, arrange its |
427 | functions in ascending order and strip off function entry markers | |
428 | and return it in a newly created table. If the old one is good | |
429 | enough, return the old one. */ | |
c906108c SS |
430 | /* FIXME: I think all this stuff can be replaced by just passing |
431 | sort_linevec = 1 to end_symtab. */ | |
432 | ||
433 | static struct linetable * | |
b095261a | 434 | arrange_linetable (struct linetable *oldLineTb) |
c906108c | 435 | { |
c5aa993b JM |
436 | int ii, jj, newline, /* new line count */ |
437 | function_count; /* # of functions */ | |
c906108c | 438 | |
c5aa993b JM |
439 | struct linetable_entry *fentry; /* function entry vector */ |
440 | int fentry_size; /* # of function entries */ | |
441 | struct linetable *newLineTb; /* new line table */ | |
a85c52f2 | 442 | int extra_lines = 0; |
c906108c SS |
443 | |
444 | #define NUM_OF_FUNCTIONS 20 | |
445 | ||
446 | fentry_size = NUM_OF_FUNCTIONS; | |
8d749320 | 447 | fentry = XNEWVEC (struct linetable_entry, fentry_size); |
c906108c | 448 | |
c5aa993b JM |
449 | for (function_count = 0, ii = 0; ii < oldLineTb->nitems; ++ii) |
450 | { | |
c5aa993b | 451 | if (oldLineTb->item[ii].line == 0) |
581e13c1 | 452 | { /* Function entry found. */ |
c5aa993b | 453 | if (function_count >= fentry_size) |
581e13c1 | 454 | { /* Make sure you have room. */ |
c5aa993b JM |
455 | fentry_size *= 2; |
456 | fentry = (struct linetable_entry *) | |
3e43a32a MS |
457 | xrealloc (fentry, |
458 | fentry_size * sizeof (struct linetable_entry)); | |
c5aa993b JM |
459 | } |
460 | fentry[function_count].line = ii; | |
461 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
462 | ++function_count; | |
a85c52f2 UW |
463 | |
464 | /* If the function was compiled with XLC, we may have to add an | |
465 | extra line entry later. Reserve space for that. */ | |
466 | if (ii + 1 < oldLineTb->nitems | |
467 | && oldLineTb->item[ii].pc != oldLineTb->item[ii + 1].pc) | |
468 | extra_lines++; | |
c5aa993b | 469 | } |
c906108c | 470 | } |
c906108c | 471 | |
c5aa993b JM |
472 | if (function_count == 0) |
473 | { | |
b8c9b27d | 474 | xfree (fentry); |
c5aa993b JM |
475 | return oldLineTb; |
476 | } | |
c906108c | 477 | else if (function_count > 1) |
3e43a32a MS |
478 | qsort (fentry, function_count, |
479 | sizeof (struct linetable_entry), compare_lte); | |
c906108c | 480 | |
581e13c1 | 481 | /* Allocate a new line table. */ |
c906108c SS |
482 | newLineTb = (struct linetable *) |
483 | xmalloc | |
c5aa993b | 484 | (sizeof (struct linetable) + |
a85c52f2 | 485 | (oldLineTb->nitems - function_count + extra_lines) * sizeof (struct linetable_entry)); |
c906108c | 486 | |
581e13c1 MS |
487 | /* If line table does not start with a function beginning, copy up until |
488 | a function begin. */ | |
c906108c SS |
489 | |
490 | newline = 0; | |
491 | if (oldLineTb->item[0].line != 0) | |
c5aa993b JM |
492 | for (newline = 0; |
493 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
c906108c SS |
494 | newLineTb->item[newline] = oldLineTb->item[newline]; |
495 | ||
581e13c1 | 496 | /* Now copy function lines one by one. */ |
c906108c | 497 | |
c5aa993b JM |
498 | for (ii = 0; ii < function_count; ++ii) |
499 | { | |
a85c52f2 UW |
500 | /* If the function was compiled with XLC, we may have to add an |
501 | extra line to cover the function prologue. */ | |
502 | jj = fentry[ii].line; | |
503 | if (jj + 1 < oldLineTb->nitems | |
504 | && oldLineTb->item[jj].pc != oldLineTb->item[jj + 1].pc) | |
505 | { | |
506 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
507 | newLineTb->item[newline].line = oldLineTb->item[jj + 1].line; | |
508 | newline++; | |
509 | } | |
510 | ||
c5aa993b JM |
511 | for (jj = fentry[ii].line + 1; |
512 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
513 | ++jj, ++newline) | |
514 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
515 | } | |
b8c9b27d | 516 | xfree (fentry); |
a85c52f2 UW |
517 | /* The number of items in the line table must include these |
518 | extra lines which were added in case of XLC compiled functions. */ | |
519 | newLineTb->nitems = oldLineTb->nitems - function_count + extra_lines; | |
c5aa993b JM |
520 | return newLineTb; |
521 | } | |
c906108c SS |
522 | |
523 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
581e13c1 | 524 | following `IncludeChain'. At the end of each symtab (end_symtab), |
c906108c | 525 | we will determine if we should create additional symtab's to |
581e13c1 | 526 | represent if (the include files. */ |
c906108c SS |
527 | |
528 | ||
c5aa993b JM |
529 | typedef struct _inclTable |
530 | { | |
531 | char *name; /* include filename */ | |
c906108c SS |
532 | |
533 | /* Offsets to the line table. end points to the last entry which is | |
534 | part of this include file. */ | |
c5aa993b JM |
535 | int begin, end; |
536 | ||
c906108c | 537 | struct subfile *subfile; |
581e13c1 | 538 | unsigned funStartLine; /* Start line # of its function. */ |
c5aa993b JM |
539 | } |
540 | InclTable; | |
c906108c SS |
541 | |
542 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
c5aa993b JM |
543 | static InclTable *inclTable; /* global include table */ |
544 | static int inclIndx; /* last entry to table */ | |
545 | static int inclLength; /* table length */ | |
546 | static int inclDepth; /* nested include depth */ | |
c906108c | 547 | |
a14ed312 | 548 | static void allocate_include_entry (void); |
c906108c SS |
549 | |
550 | static void | |
fba45db2 | 551 | record_include_begin (struct coff_symbol *cs) |
c906108c SS |
552 | { |
553 | if (inclDepth) | |
554 | { | |
555 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
c5aa993b | 556 | of course, but in corresponding .s files.). */ |
c906108c SS |
557 | |
558 | /* This can happen with old versions of GCC. | |
c5aa993b JM |
559 | GCC 2.3.3-930426 does not exhibit this on a test case which |
560 | a user said produced the message for him. */ | |
e2e0b3e5 | 561 | complaint (&symfile_complaints, _("Nested C_BINCL symbols")); |
c906108c SS |
562 | } |
563 | ++inclDepth; | |
564 | ||
565 | allocate_include_entry (); | |
566 | ||
c5aa993b JM |
567 | inclTable[inclIndx].name = cs->c_name; |
568 | inclTable[inclIndx].begin = cs->c_value; | |
c906108c SS |
569 | } |
570 | ||
571 | static void | |
fba45db2 | 572 | record_include_end (struct coff_symbol *cs) |
c906108c | 573 | { |
c5aa993b | 574 | InclTable *pTbl; |
c906108c SS |
575 | |
576 | if (inclDepth == 0) | |
577 | { | |
e2e0b3e5 | 578 | complaint (&symfile_complaints, _("Mismatched C_BINCL/C_EINCL pair")); |
c906108c SS |
579 | } |
580 | ||
581 | allocate_include_entry (); | |
582 | ||
c5aa993b | 583 | pTbl = &inclTable[inclIndx]; |
c906108c SS |
584 | pTbl->end = cs->c_value; |
585 | ||
586 | --inclDepth; | |
587 | ++inclIndx; | |
588 | } | |
589 | ||
590 | static void | |
fba45db2 | 591 | allocate_include_entry (void) |
c906108c SS |
592 | { |
593 | if (inclTable == NULL) | |
594 | { | |
8d749320 | 595 | inclTable = XCNEWVEC (InclTable, INITIAL_INCLUDE_TABLE_LENGTH); |
c906108c SS |
596 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; |
597 | inclIndx = 0; | |
598 | } | |
599 | else if (inclIndx >= inclLength) | |
600 | { | |
601 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
8d749320 | 602 | inclTable = XRESIZEVEC (InclTable, inclTable, inclLength); |
c5aa993b JM |
603 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, |
604 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
c906108c SS |
605 | } |
606 | } | |
607 | ||
608 | /* Global variable to pass the psymtab down to all the routines involved | |
609 | in psymtab to symtab processing. */ | |
610 | static struct partial_symtab *this_symtab_psymtab; | |
611 | ||
5c80ed9d TT |
612 | /* Objfile related to this_symtab_psymtab; set at the same time. */ |
613 | static struct objfile *this_symtab_objfile; | |
614 | ||
c906108c | 615 | /* given the start and end addresses of a compilation unit (or a csect, |
581e13c1 | 616 | at times) process its lines and create appropriate line vectors. */ |
c906108c SS |
617 | |
618 | static void | |
fba45db2 | 619 | process_linenos (CORE_ADDR start, CORE_ADDR end) |
c906108c SS |
620 | { |
621 | int offset, ii; | |
b8b98ad1 | 622 | file_ptr max_offset |
5c80ed9d | 623 | = XCOFF_DATA (this_symtab_objfile)->max_lineno_offset; |
c906108c SS |
624 | |
625 | /* subfile structure for the main compilation unit. */ | |
626 | struct subfile main_subfile; | |
627 | ||
628 | /* In the main source file, any time we see a function entry, we | |
629 | reset this variable to function's absolute starting line number. | |
630 | All the following line numbers in the function are relative to | |
631 | this, and we record absolute line numbers in record_line(). */ | |
632 | ||
633 | unsigned int main_source_baseline = 0; | |
634 | ||
635 | unsigned *firstLine; | |
636 | ||
637 | offset = | |
c5aa993b | 638 | ((struct symloc *) this_symtab_psymtab->read_symtab_private)->lineno_off; |
c906108c SS |
639 | if (offset == 0) |
640 | goto return_after_cleanup; | |
641 | ||
642 | memset (&main_subfile, '\0', sizeof (main_subfile)); | |
643 | ||
644 | if (inclIndx == 0) | |
581e13c1 MS |
645 | /* All source lines were in the main source file. None in include |
646 | files. */ | |
c906108c | 647 | |
c5aa993b JM |
648 | enter_line_range (&main_subfile, offset, 0, start, end, |
649 | &main_source_baseline); | |
c906108c SS |
650 | |
651 | else | |
652 | { | |
653 | /* There was source with line numbers in include files. */ | |
7a78ae4e ND |
654 | |
655 | int linesz = | |
5c80ed9d | 656 | coff_data (this_symtab_objfile->obfd)->local_linesz; |
c906108c | 657 | main_source_baseline = 0; |
7a78ae4e | 658 | |
c5aa993b | 659 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c SS |
660 | { |
661 | struct subfile *tmpSubfile; | |
662 | ||
663 | /* If there is main file source before include file, enter it. */ | |
664 | if (offset < inclTable[ii].begin) | |
665 | { | |
666 | enter_line_range | |
7a78ae4e | 667 | (&main_subfile, offset, inclTable[ii].begin - linesz, |
c906108c SS |
668 | start, 0, &main_source_baseline); |
669 | } | |
670 | ||
46212e0b | 671 | if (strcmp (inclTable[ii].name, get_last_source_file ()) == 0) |
c5933f6d JB |
672 | { |
673 | /* The entry in the include table refers to the main source | |
581e13c1 | 674 | file. Add the lines to the main subfile. */ |
c5933f6d JB |
675 | |
676 | main_source_baseline = inclTable[ii].funStartLine; | |
677 | enter_line_range | |
678 | (&main_subfile, inclTable[ii].begin, inclTable[ii].end, | |
679 | start, 0, &main_source_baseline); | |
680 | inclTable[ii].subfile = &main_subfile; | |
681 | } | |
682 | else | |
683 | { | |
c5933f6d | 684 | /* Have a new subfile for the include file. */ |
c906108c | 685 | |
8d749320 | 686 | tmpSubfile = inclTable[ii].subfile = XNEW (struct subfile); |
c906108c | 687 | |
c5933f6d JB |
688 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
689 | firstLine = &(inclTable[ii].funStartLine); | |
690 | ||
691 | /* Enter include file's lines now. */ | |
692 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
693 | inclTable[ii].end, start, 0, firstLine); | |
694 | } | |
c906108c SS |
695 | |
696 | if (offset <= inclTable[ii].end) | |
7a78ae4e | 697 | offset = inclTable[ii].end + linesz; |
c906108c SS |
698 | } |
699 | ||
700 | /* All the include files' line have been processed at this point. Now, | |
c5aa993b | 701 | enter remaining lines of the main file, if any left. */ |
7a78ae4e | 702 | if (offset < max_offset + 1 - linesz) |
c906108c | 703 | { |
c5aa993b | 704 | enter_line_range (&main_subfile, offset, 0, start, end, |
c906108c SS |
705 | &main_source_baseline); |
706 | } | |
707 | } | |
708 | ||
709 | /* Process main file's line numbers. */ | |
710 | if (main_subfile.line_vector) | |
711 | { | |
712 | struct linetable *lineTb, *lv; | |
713 | ||
714 | lv = main_subfile.line_vector; | |
715 | ||
581e13c1 MS |
716 | /* Line numbers are not necessarily ordered. xlc compilation will |
717 | put static function to the end. */ | |
c906108c SS |
718 | |
719 | lineTb = arrange_linetable (lv); | |
720 | if (lv == lineTb) | |
721 | { | |
722 | current_subfile->line_vector = (struct linetable *) | |
723 | xrealloc (lv, (sizeof (struct linetable) | |
724 | + lv->nitems * sizeof (struct linetable_entry))); | |
725 | } | |
726 | else | |
727 | { | |
b8c9b27d | 728 | xfree (lv); |
c906108c SS |
729 | current_subfile->line_vector = lineTb; |
730 | } | |
731 | ||
c5aa993b | 732 | current_subfile->line_vector_length = |
c906108c SS |
733 | current_subfile->line_vector->nitems; |
734 | } | |
735 | ||
736 | /* Now, process included files' line numbers. */ | |
737 | ||
c5aa993b | 738 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c | 739 | { |
c5933f6d | 740 | if (inclTable[ii].subfile != ((struct subfile *) &main_subfile) |
3e43a32a MS |
741 | && (inclTable[ii].subfile)->line_vector) /* Useless if!!! |
742 | FIXMEmgo */ | |
c906108c SS |
743 | { |
744 | struct linetable *lineTb, *lv; | |
745 | ||
746 | lv = (inclTable[ii].subfile)->line_vector; | |
747 | ||
581e13c1 MS |
748 | /* Line numbers are not necessarily ordered. xlc compilation will |
749 | put static function to the end. */ | |
c906108c SS |
750 | |
751 | lineTb = arrange_linetable (lv); | |
752 | ||
753 | push_subfile (); | |
754 | ||
755 | /* For the same include file, we might want to have more than one | |
756 | subfile. This happens if we have something like: | |
757 | ||
c5aa993b JM |
758 | ...... |
759 | #include "foo.h" | |
760 | ...... | |
761 | #include "foo.h" | |
762 | ...... | |
c906108c | 763 | |
581e13c1 | 764 | while foo.h including code in it. (stupid but possible) |
c906108c SS |
765 | Since start_subfile() looks at the name and uses an |
766 | existing one if finds, we need to provide a fake name and | |
767 | fool it. */ | |
768 | ||
769 | #if 0 | |
4d663531 | 770 | start_subfile (inclTable[ii].name); |
c906108c SS |
771 | #else |
772 | { | |
773 | /* Pick a fake name that will produce the same results as this | |
774 | one when passed to deduce_language_from_filename. Kludge on | |
775 | top of kludge. */ | |
a121b7c1 | 776 | const char *fakename = strrchr (inclTable[ii].name, '.'); |
a109c7c1 | 777 | |
c906108c SS |
778 | if (fakename == NULL) |
779 | fakename = " ?"; | |
4d663531 | 780 | start_subfile (fakename); |
b8c9b27d | 781 | xfree (current_subfile->name); |
c906108c | 782 | } |
c2d11a7d | 783 | current_subfile->name = xstrdup (inclTable[ii].name); |
c906108c SS |
784 | #endif |
785 | ||
786 | if (lv == lineTb) | |
787 | { | |
788 | current_subfile->line_vector = | |
789 | (struct linetable *) xrealloc | |
c5aa993b JM |
790 | (lv, (sizeof (struct linetable) |
791 | + lv->nitems * sizeof (struct linetable_entry))); | |
c906108c SS |
792 | |
793 | } | |
794 | else | |
795 | { | |
b8c9b27d | 796 | xfree (lv); |
c906108c SS |
797 | current_subfile->line_vector = lineTb; |
798 | } | |
799 | ||
c5aa993b | 800 | current_subfile->line_vector_length = |
c906108c | 801 | current_subfile->line_vector->nitems; |
4d663531 | 802 | start_subfile (pop_subfile ()); |
c906108c SS |
803 | } |
804 | } | |
805 | ||
c5aa993b | 806 | return_after_cleanup: |
c906108c SS |
807 | |
808 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
809 | inclIndx = 0; | |
c906108c SS |
810 | } |
811 | ||
c295b2e5 | 812 | static void |
f56ce883 | 813 | aix_process_linenos (struct objfile *objfile) |
c906108c | 814 | { |
316a8b21 TG |
815 | /* There is no linenos to read if there are only dwarf info. */ |
816 | if (this_symtab_psymtab == NULL) | |
817 | return; | |
818 | ||
581e13c1 | 819 | /* Process line numbers and enter them into line vector. */ |
c906108c SS |
820 | process_linenos (last_source_start_addr, cur_src_end_addr); |
821 | } | |
822 | ||
823 | ||
824 | /* Enter a given range of lines into the line vector. | |
825 | can be called in the following two ways: | |
3e43a32a MS |
826 | enter_line_range (subfile, beginoffset, endoffset, |
827 | startaddr, 0, firstLine) or | |
828 | enter_line_range (subfile, beginoffset, 0, | |
829 | startaddr, endaddr, firstLine) | |
c906108c SS |
830 | |
831 | endoffset points to the last line table entry that we should pay | |
832 | attention to. */ | |
833 | ||
834 | static void | |
3e43a32a MS |
835 | enter_line_range (struct subfile *subfile, unsigned beginoffset, |
836 | unsigned endoffset, /* offsets to line table */ | |
fba45db2 KB |
837 | CORE_ADDR startaddr, /* offsets to line table */ |
838 | CORE_ADDR endaddr, unsigned *firstLine) | |
c906108c | 839 | { |
5c80ed9d | 840 | struct objfile *objfile = this_symtab_objfile; |
fbf65064 | 841 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
842 | unsigned int curoffset; |
843 | CORE_ADDR addr; | |
7a78ae4e | 844 | void *ext_lnno; |
c906108c SS |
845 | struct internal_lineno int_lnno; |
846 | unsigned int limit_offset; | |
847 | bfd *abfd; | |
7a78ae4e | 848 | int linesz; |
c906108c SS |
849 | |
850 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) | |
851 | return; | |
852 | curoffset = beginoffset; | |
b8b98ad1 | 853 | limit_offset = XCOFF_DATA (objfile)->max_lineno_offset; |
c906108c SS |
854 | |
855 | if (endoffset != 0) | |
856 | { | |
857 | if (endoffset >= limit_offset) | |
858 | { | |
23136709 | 859 | complaint (&symfile_complaints, |
e2e0b3e5 | 860 | _("Bad line table offset in C_EINCL directive")); |
c906108c SS |
861 | return; |
862 | } | |
863 | limit_offset = endoffset; | |
864 | } | |
865 | else | |
866 | limit_offset -= 1; | |
7a78ae4e | 867 | |
fbf65064 | 868 | abfd = objfile->obfd; |
7a78ae4e ND |
869 | linesz = coff_data (abfd)->local_linesz; |
870 | ext_lnno = alloca (linesz); | |
c906108c SS |
871 | |
872 | while (curoffset <= limit_offset) | |
873 | { | |
874 | bfd_seek (abfd, curoffset, SEEK_SET); | |
3a42e9d0 | 875 | bfd_bread (ext_lnno, linesz, abfd); |
7a78ae4e | 876 | bfd_coff_swap_lineno_in (abfd, ext_lnno, &int_lnno); |
c906108c SS |
877 | |
878 | /* Find the address this line represents. */ | |
879 | addr = (int_lnno.l_lnno | |
880 | ? int_lnno.l_addr.l_paddr | |
881 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
fbf65064 | 882 | addr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
883 | |
884 | if (addr < startaddr || (endaddr && addr >= endaddr)) | |
885 | return; | |
886 | ||
887 | if (int_lnno.l_lnno == 0) | |
888 | { | |
889 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
fbf65064 | 890 | record_line (subfile, 0, gdbarch_addr_bits_remove (gdbarch, addr)); |
c906108c SS |
891 | --(*firstLine); |
892 | } | |
893 | else | |
fbf65064 UW |
894 | record_line (subfile, *firstLine + int_lnno.l_lnno, |
895 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
7a78ae4e | 896 | curoffset += linesz; |
c906108c SS |
897 | } |
898 | } | |
899 | ||
900 | ||
901 | /* Save the vital information for use when closing off the current file. | |
902 | NAME is the file name the symbols came from, START_ADDR is the first | |
903 | text address for the file, and SIZE is the number of bytes of text. */ | |
904 | ||
905 | #define complete_symtab(name, start_addr) { \ | |
46212e0b | 906 | set_last_source_file (name); \ |
1b36a34b | 907 | last_source_start_addr = start_addr; \ |
c906108c SS |
908 | } |
909 | ||
910 | ||
911 | /* Refill the symbol table input buffer | |
912 | and set the variables that control fetching entries from it. | |
913 | Reports an error if no data available. | |
914 | This function can read past the end of the symbol table | |
915 | (into the string table) but this does no harm. */ | |
916 | ||
8dddcb8f | 917 | /* Create a new minimal symbol (using record_with_info). |
ec92004f | 918 | |
4d1eb6b4 | 919 | Creation of all new minimal symbols should go through this function |
8dddcb8f | 920 | rather than calling the various record functions in order |
4d1eb6b4 JB |
921 | to make sure that all symbol addresses get properly relocated. |
922 | ||
ec92004f JB |
923 | Arguments are: |
924 | ||
925 | NAME - the symbol's name (but if NAME starts with a period, that | |
926 | leading period is discarded). | |
4d1eb6b4 JB |
927 | ADDRESS - the symbol's address, prior to relocation. This function |
928 | relocates the address before recording the minimal symbol. | |
ec92004f JB |
929 | MS_TYPE - the symbol's type. |
930 | N_SCNUM - the symbol's XCOFF section number. | |
931 | OBJFILE - the objfile associated with the minimal symbol. */ | |
c906108c | 932 | |
ec92004f | 933 | static void |
8dddcb8f TT |
934 | record_minimal_symbol (minimal_symbol_reader &reader, |
935 | const char *name, CORE_ADDR address, | |
ec92004f JB |
936 | enum minimal_symbol_type ms_type, |
937 | int n_scnum, | |
938 | struct objfile *objfile) | |
939 | { | |
ec92004f JB |
940 | if (name[0] == '.') |
941 | ++name; | |
942 | ||
8dddcb8f TT |
943 | reader.record_with_info (name, address, ms_type, |
944 | secnum_to_section (n_scnum, objfile)); | |
ec92004f | 945 | } |
c906108c | 946 | |
581e13c1 MS |
947 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
948 | nested. At any given time, a symbol can only be in one static block. | |
949 | This is the base address of current static block, zero if non exists. */ | |
c5aa993b | 950 | |
c906108c SS |
951 | static int static_block_base = 0; |
952 | ||
953 | /* Section number for the current static block. */ | |
954 | ||
955 | static int static_block_section = -1; | |
956 | ||
581e13c1 | 957 | /* true if space for symbol name has been allocated. */ |
c906108c SS |
958 | |
959 | static int symname_alloced = 0; | |
960 | ||
961 | /* Next symbol to read. Pointer into raw seething symbol table. */ | |
962 | ||
963 | static char *raw_symbol; | |
964 | ||
965 | /* This is the function which stabsread.c calls to get symbol | |
966 | continuations. */ | |
967 | ||
a121b7c1 | 968 | static const char * |
fba45db2 | 969 | xcoff_next_symbol_text (struct objfile *objfile) |
c906108c SS |
970 | { |
971 | struct internal_syment symbol; | |
a121b7c1 | 972 | const char *retval; |
a109c7c1 | 973 | |
581e13c1 | 974 | /* FIXME: is this the same as the passed arg? */ |
5c80ed9d TT |
975 | if (this_symtab_objfile) |
976 | objfile = this_symtab_objfile; | |
c906108c SS |
977 | |
978 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); | |
979 | if (symbol.n_zeroes) | |
980 | { | |
e2e0b3e5 | 981 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
982 | |
983 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 984 | code does something reasonable. */ |
c906108c SS |
985 | retval = ""; |
986 | } | |
987 | else if (symbol.n_sclass & 0x80) | |
988 | { | |
b8b98ad1 | 989 | retval = XCOFF_DATA (objfile)->debugsec + symbol.n_offset; |
3e43a32a | 990 | raw_symbol += coff_data (objfile->obfd)->local_symesz; |
c906108c SS |
991 | ++symnum; |
992 | } | |
993 | else | |
994 | { | |
e2e0b3e5 | 995 | complaint (&symfile_complaints, _("Unexpected symbol continuation")); |
c906108c SS |
996 | |
997 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 998 | code does something reasonable. */ |
c906108c SS |
999 | retval = ""; |
1000 | } | |
1001 | return retval; | |
1002 | } | |
1003 | ||
1004 | /* Read symbols for a given partial symbol table. */ | |
1005 | ||
1006 | static void | |
5c80ed9d | 1007 | read_xcoff_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 1008 | { |
c906108c | 1009 | bfd *abfd = objfile->obfd; |
581e13c1 | 1010 | char *raw_auxptr; /* Pointer to first raw aux entry for sym. */ |
b8b98ad1 TT |
1011 | struct coff_symfile_info *xcoff = XCOFF_DATA (objfile); |
1012 | char *strtbl = xcoff->strtbl; | |
1013 | char *debugsec = xcoff->debugsec; | |
554d387d | 1014 | const char *debugfmt = bfd_xcoff_is_xcoff64 (abfd) ? "XCOFF64" : "XCOFF"; |
c906108c SS |
1015 | |
1016 | struct internal_syment symbol[1]; | |
1017 | union internal_auxent main_aux; | |
1018 | struct coff_symbol cs[1]; | |
1019 | CORE_ADDR file_start_addr = 0; | |
1020 | CORE_ADDR file_end_addr = 0; | |
1021 | ||
1022 | int next_file_symnum = -1; | |
1023 | unsigned int max_symnum; | |
1024 | int just_started = 1; | |
1025 | int depth = 0; | |
086850b2 | 1026 | CORE_ADDR fcn_start_addr = 0; |
c906108c | 1027 | |
238ae9af | 1028 | struct coff_symbol fcn_stab_saved = { 0 }; |
c906108c | 1029 | |
581e13c1 | 1030 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
3672b1be | 1031 | union internal_auxent fcn_aux_saved = main_aux; |
fe978cb0 | 1032 | struct context_stack *newobj; |
c906108c | 1033 | |
9a1e3f00 | 1034 | const char *filestring = pst->filename; /* Name of the current file. */ |
c906108c | 1035 | |
40301fb7 | 1036 | const char *last_csect_name; /* Last seen csect's name. */ |
c906108c SS |
1037 | |
1038 | this_symtab_psymtab = pst; | |
5c80ed9d | 1039 | this_symtab_objfile = objfile; |
c906108c SS |
1040 | |
1041 | /* Get the appropriate COFF "constants" related to the file we're | |
581e13c1 | 1042 | handling. */ |
c906108c SS |
1043 | local_symesz = coff_data (abfd)->local_symesz; |
1044 | ||
46212e0b | 1045 | set_last_source_file (NULL); |
c906108c | 1046 | last_csect_name = 0; |
c906108c SS |
1047 | |
1048 | start_stabs (); | |
5ffa0793 PA |
1049 | start_symtab (objfile, filestring, (char *) NULL, file_start_addr, |
1050 | language_unknown); | |
7a78ae4e | 1051 | record_debugformat (debugfmt); |
c5aa993b | 1052 | symnum = ((struct symloc *) pst->read_symtab_private)->first_symnum; |
c906108c | 1053 | max_symnum = |
c5aa993b | 1054 | symnum + ((struct symloc *) pst->read_symtab_private)->numsyms; |
c906108c SS |
1055 | first_object_file_end = 0; |
1056 | ||
b8b98ad1 | 1057 | raw_symbol = xcoff->symtbl + symnum * local_symesz; |
c906108c SS |
1058 | |
1059 | while (symnum < max_symnum) | |
1060 | { | |
c906108c SS |
1061 | QUIT; /* make this command interruptable. */ |
1062 | ||
1063 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
581e13c1 | 1064 | /* read one symbol into `cs' structure. After processing the |
c5aa993b | 1065 | whole symbol table, only string table will be kept in memory, |
581e13c1 | 1066 | symbol table and debug section of xcoff will be freed. Thus |
c5aa993b | 1067 | we can mark symbols with names in string table as |
581e13c1 | 1068 | `alloced'. */ |
c906108c SS |
1069 | { |
1070 | int ii; | |
1071 | ||
1072 | /* Swap and align the symbol into a reasonable C structure. */ | |
1073 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1074 | ||
1075 | cs->c_symnum = symnum; | |
1076 | cs->c_naux = symbol->n_numaux; | |
1077 | if (symbol->n_zeroes) | |
1078 | { | |
1079 | symname_alloced = 0; | |
1080 | /* We must use the original, unswapped, name here so the name field | |
1081 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1082 | we use the new field, it gets overwritten for each symbol. */ | |
c5aa993b | 1083 | cs->c_name = ((struct external_syment *) raw_symbol)->e.e_name; |
c906108c SS |
1084 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1085 | '\0'-terminated. */ | |
1086 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1087 | { | |
1088 | char *p; | |
a109c7c1 | 1089 | |
224c3ddb SM |
1090 | p = (char *) obstack_alloc (&objfile->objfile_obstack, |
1091 | E_SYMNMLEN + 1); | |
c906108c SS |
1092 | strncpy (p, cs->c_name, E_SYMNMLEN); |
1093 | p[E_SYMNMLEN] = '\0'; | |
1094 | cs->c_name = p; | |
1095 | symname_alloced = 1; | |
1096 | } | |
1097 | } | |
1098 | else if (symbol->n_sclass & 0x80) | |
1099 | { | |
1100 | cs->c_name = debugsec + symbol->n_offset; | |
1101 | symname_alloced = 0; | |
1102 | } | |
1103 | else | |
1104 | { | |
1105 | /* in string table */ | |
c5aa993b | 1106 | cs->c_name = strtbl + (int) symbol->n_offset; |
c906108c SS |
1107 | symname_alloced = 1; |
1108 | } | |
1109 | cs->c_value = symbol->n_value; | |
1110 | cs->c_sclass = symbol->n_sclass; | |
1111 | cs->c_secnum = symbol->n_scnum; | |
c5aa993b | 1112 | cs->c_type = (unsigned) symbol->n_type; |
c906108c | 1113 | |
7a78ae4e | 1114 | raw_symbol += local_symesz; |
c906108c SS |
1115 | ++symnum; |
1116 | ||
1117 | /* Save addr of first aux entry. */ | |
1118 | raw_auxptr = raw_symbol; | |
1119 | ||
1120 | /* Skip all the auxents associated with this symbol. */ | |
1121 | for (ii = symbol->n_numaux; ii; --ii) | |
1122 | { | |
1123 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1124 | ++symnum; | |
1125 | } | |
1126 | } | |
1127 | ||
581e13c1 | 1128 | /* if symbol name starts with ".$" or "$", ignore it. */ |
c906108c SS |
1129 | if (cs->c_name[0] == '$' |
1130 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1131 | continue; | |
1132 | ||
1133 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
1134 | { | |
46212e0b | 1135 | if (get_last_source_file ()) |
c906108c | 1136 | { |
43f3e411 DE |
1137 | pst->compunit_symtab = end_symtab (cur_src_end_addr, |
1138 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1139 | end_stabs (); |
1140 | } | |
1141 | ||
1142 | start_stabs (); | |
5ffa0793 PA |
1143 | start_symtab (objfile, "_globals_", (char *) NULL, (CORE_ADDR) 0, |
1144 | language_unknown); | |
7a78ae4e | 1145 | record_debugformat (debugfmt); |
c906108c | 1146 | cur_src_end_addr = first_object_file_end; |
581e13c1 | 1147 | /* Done with all files, everything from here on is globals. */ |
c906108c SS |
1148 | } |
1149 | ||
55bcecda UW |
1150 | if (cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT || |
1151 | cs->c_sclass == C_WEAKEXT) | |
c906108c SS |
1152 | { |
1153 | /* Dealing with a symbol with a csect entry. */ | |
1154 | ||
1155 | #define CSECT(PP) ((PP)->x_csect) | |
1156 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1157 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1158 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1159 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1160 | ||
55bcecda UW |
1161 | /* Convert the auxent to something we can access. |
1162 | XCOFF can have more than one auxiliary entries. | |
1163 | ||
1164 | Actual functions will have two auxiliary entries, one to have the | |
1165 | function size and other to have the smtype/smclass (LD/PR). | |
1166 | ||
1167 | c_type value of main symbol table will be set only in case of | |
1168 | C_EXT/C_HIDEEXT/C_WEAKEXT storage class symbols. | |
1169 | Bit 10 of type is set if symbol is a function, ie the value is set | |
1170 | to 32(0x20). So we need to read the first function auxiliay entry | |
1171 | which contains the size. */ | |
1172 | if (cs->c_naux > 1 && ISFCN (cs->c_type)) | |
1173 | { | |
1174 | /* a function entry point. */ | |
1175 | ||
1176 | fcn_start_addr = cs->c_value; | |
1177 | ||
1178 | /* save the function header info, which will be used | |
1179 | when `.bf' is seen. */ | |
1180 | fcn_cs_saved = *cs; | |
1181 | ||
1182 | /* Convert the auxent to something we can access. */ | |
1183 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1184 | 0, cs->c_naux, &fcn_aux_saved); | |
1185 | continue; | |
1186 | } | |
1187 | /* Read the csect auxiliary header, which is always the last by | |
1188 | onvention. */ | |
1189 | bfd_coff_swap_aux_in (abfd, | |
1190 | raw_auxptr | |
1191 | + ((coff_data (abfd)->local_symesz) | |
1192 | * (cs->c_naux - 1)), | |
1193 | cs->c_type, cs->c_sclass, | |
1194 | cs->c_naux - 1, cs->c_naux, | |
1195 | &main_aux); | |
c906108c SS |
1196 | |
1197 | switch (CSECT_SMTYP (&main_aux)) | |
1198 | { | |
1199 | ||
1200 | case XTY_ER: | |
1201 | /* Ignore all external references. */ | |
1202 | continue; | |
1203 | ||
1204 | case XTY_SD: | |
1205 | /* A section description. */ | |
1206 | { | |
1207 | switch (CSECT_SCLAS (&main_aux)) | |
1208 | { | |
1209 | ||
1210 | case XMC_PR: | |
1211 | { | |
1212 | ||
1213 | /* A program csect is seen. We have to allocate one | |
c5aa993b JM |
1214 | symbol table for each program csect. Normally gdb |
1215 | prefers one symtab for each source file. In case | |
1216 | of AIX, one source file might include more than one | |
1217 | [PR] csect, and they don't have to be adjacent in | |
581e13c1 | 1218 | terms of the space they occupy in memory. Thus, one |
c5aa993b JM |
1219 | single source file might get fragmented in the |
1220 | memory and gdb's file start and end address | |
1221 | approach does not work! GCC (and I think xlc) seem | |
1222 | to put all the code in the unnamed program csect. */ | |
c906108c SS |
1223 | |
1224 | if (last_csect_name) | |
1225 | { | |
1226 | complete_symtab (filestring, file_start_addr); | |
1227 | cur_src_end_addr = file_end_addr; | |
43f3e411 | 1228 | end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1229 | end_stabs (); |
1230 | start_stabs (); | |
1231 | /* Give all csects for this source file the same | |
1232 | name. */ | |
4d663531 | 1233 | start_symtab (objfile, filestring, NULL, |
5ffa0793 | 1234 | (CORE_ADDR) 0, language_unknown); |
7a78ae4e | 1235 | record_debugformat (debugfmt); |
c906108c SS |
1236 | } |
1237 | ||
1238 | /* If this is the very first csect seen, | |
581e13c1 | 1239 | basically `__start'. */ |
c906108c SS |
1240 | if (just_started) |
1241 | { | |
1242 | first_object_file_end | |
1243 | = cs->c_value + CSECT_LEN (&main_aux); | |
1244 | just_started = 0; | |
1245 | } | |
1246 | ||
1247 | file_start_addr = | |
1248 | cs->c_value + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1249 | SECT_OFF_TEXT (objfile)); |
c906108c SS |
1250 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); |
1251 | ||
40301fb7 JB |
1252 | if (cs->c_name && (cs->c_name[0] == '.' || cs->c_name[0] == '@')) |
1253 | last_csect_name = cs->c_name; | |
c906108c SS |
1254 | } |
1255 | continue; | |
1256 | ||
1257 | /* All other symbols are put into the minimal symbol | |
1258 | table only. */ | |
1259 | ||
1260 | case XMC_RW: | |
1261 | continue; | |
1262 | ||
1263 | case XMC_TC0: | |
1264 | continue; | |
1265 | ||
1266 | case XMC_TC: | |
1267 | continue; | |
1268 | ||
1269 | default: | |
1270 | /* Ignore the symbol. */ | |
1271 | continue; | |
1272 | } | |
1273 | } | |
1274 | break; | |
1275 | ||
1276 | case XTY_LD: | |
1277 | ||
1278 | switch (CSECT_SCLAS (&main_aux)) | |
1279 | { | |
55bcecda UW |
1280 | /* We never really come to this part as this case has been |
1281 | handled in ISFCN check above. | |
1282 | This and other cases of XTY_LD are kept just for | |
1283 | reference. */ | |
c906108c | 1284 | case XMC_PR: |
c906108c SS |
1285 | continue; |
1286 | ||
1287 | case XMC_GL: | |
581e13c1 | 1288 | /* shared library function trampoline code entry point. */ |
c906108c SS |
1289 | continue; |
1290 | ||
1291 | case XMC_DS: | |
1292 | /* The symbols often have the same names as debug symbols for | |
1293 | functions, and confuse lookup_symbol. */ | |
1294 | continue; | |
1295 | ||
1296 | default: | |
1297 | /* xlc puts each variable in a separate csect, so we get | |
1298 | an XTY_SD for each variable. But gcc puts several | |
1299 | variables in a csect, so that each variable only gets | |
581e13c1 | 1300 | an XTY_LD. This will typically be XMC_RW; I suspect |
c906108c SS |
1301 | XMC_RO and XMC_BS might be possible too. |
1302 | These variables are put in the minimal symbol table | |
1303 | only. */ | |
1304 | continue; | |
1305 | } | |
1306 | break; | |
1307 | ||
1308 | case XTY_CM: | |
1309 | /* Common symbols are put into the minimal symbol table only. */ | |
1310 | continue; | |
1311 | ||
1312 | default: | |
1313 | break; | |
1314 | } | |
1315 | } | |
1316 | ||
1317 | switch (cs->c_sclass) | |
1318 | { | |
c906108c SS |
1319 | case C_FILE: |
1320 | ||
1321 | /* c_value field contains symnum of next .file entry in table | |
581e13c1 | 1322 | or symnum of first global after last .file. */ |
c906108c SS |
1323 | |
1324 | next_file_symnum = cs->c_value; | |
1325 | ||
1326 | /* Complete symbol table for last object file containing | |
581e13c1 | 1327 | debugging information. */ |
c906108c SS |
1328 | |
1329 | /* Whether or not there was a csect in the previous file, we | |
1330 | have to call `end_stabs' and `start_stabs' to reset | |
1331 | type_vector, line_vector, etc. structures. */ | |
1332 | ||
1333 | complete_symtab (filestring, file_start_addr); | |
1334 | cur_src_end_addr = file_end_addr; | |
4d663531 | 1335 | end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1336 | end_stabs (); |
1337 | ||
3e43a32a MS |
1338 | /* XCOFF, according to the AIX 3.2 documentation, puts the |
1339 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
1340 | do things the standard COFF way and put it in the auxent. | |
1341 | We use the auxent if the symbol is ".file" and an auxent | |
1342 | exists, otherwise use the symbol itself. Simple | |
1343 | enough. */ | |
c906108c SS |
1344 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) |
1345 | { | |
1346 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1347 | 0, cs->c_naux, &main_aux); | |
1348 | filestring = coff_getfilename (&main_aux, objfile); | |
1349 | } | |
1350 | else | |
1351 | filestring = cs->c_name; | |
1352 | ||
1353 | start_stabs (); | |
5ffa0793 PA |
1354 | start_symtab (objfile, filestring, (char *) NULL, (CORE_ADDR) 0, |
1355 | language_unknown); | |
7a78ae4e | 1356 | record_debugformat (debugfmt); |
c906108c SS |
1357 | last_csect_name = 0; |
1358 | ||
581e13c1 | 1359 | /* reset file start and end addresses. A compilation unit |
3e43a32a | 1360 | with no text (only data) should have zero file |
581e13c1 | 1361 | boundaries. */ |
c906108c SS |
1362 | file_start_addr = file_end_addr = 0; |
1363 | break; | |
1364 | ||
1365 | case C_FUN: | |
1366 | fcn_stab_saved = *cs; | |
1367 | break; | |
1368 | ||
1369 | case C_FCN: | |
7ecb6532 | 1370 | if (strcmp (cs->c_name, ".bf") == 0) |
c906108c SS |
1371 | { |
1372 | CORE_ADDR off = ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1373 | SECT_OFF_TEXT (objfile)); |
a109c7c1 | 1374 | |
c906108c SS |
1375 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1376 | 0, cs->c_naux, &main_aux); | |
1377 | ||
1378 | within_function = 1; | |
1379 | ||
fe978cb0 | 1380 | newobj = push_context (0, fcn_start_addr + off); |
c906108c | 1381 | |
fe978cb0 | 1382 | newobj->name = define_symbol |
c906108c SS |
1383 | (fcn_cs_saved.c_value + off, |
1384 | fcn_stab_saved.c_name, 0, 0, objfile); | |
fe978cb0 PA |
1385 | if (newobj->name != NULL) |
1386 | SYMBOL_SECTION (newobj->name) = SECT_OFF_TEXT (objfile); | |
c906108c | 1387 | } |
7ecb6532 | 1388 | else if (strcmp (cs->c_name, ".ef") == 0) |
c906108c | 1389 | { |
c906108c SS |
1390 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1391 | 0, cs->c_naux, &main_aux); | |
1392 | ||
1393 | /* The value of .ef is the address of epilogue code; | |
c5aa993b | 1394 | not useful for gdb. */ |
c906108c | 1395 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
c5aa993b | 1396 | contains number of lines to '}' */ |
c906108c SS |
1397 | |
1398 | if (context_stack_depth <= 0) | |
581e13c1 | 1399 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1400 | ef_complaint (cs->c_symnum); |
c906108c SS |
1401 | within_function = 0; |
1402 | break; | |
1403 | } | |
fe978cb0 | 1404 | newobj = pop_context (); |
c906108c | 1405 | /* Stack must be empty now. */ |
fe978cb0 | 1406 | if (context_stack_depth > 0 || newobj == NULL) |
c906108c | 1407 | { |
23136709 | 1408 | ef_complaint (cs->c_symnum); |
c906108c SS |
1409 | within_function = 0; |
1410 | break; | |
1411 | } | |
1412 | ||
fe978cb0 | 1413 | finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
63e43d3a | 1414 | NULL, newobj->start_addr, |
c906108c SS |
1415 | (fcn_cs_saved.c_value |
1416 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1417 | + ANOFFSET (objfile->section_offsets, | |
4d663531 | 1418 | SECT_OFF_TEXT (objfile)))); |
c906108c SS |
1419 | within_function = 0; |
1420 | } | |
1421 | break; | |
1422 | ||
1423 | case C_BSTAT: | |
1424 | /* Begin static block. */ | |
1425 | { | |
1426 | struct internal_syment symbol; | |
1427 | ||
1428 | read_symbol (&symbol, cs->c_value); | |
1429 | static_block_base = symbol.n_value; | |
1430 | static_block_section = | |
1431 | secnum_to_section (symbol.n_scnum, objfile); | |
1432 | } | |
1433 | break; | |
1434 | ||
1435 | case C_ESTAT: | |
1436 | /* End of static block. */ | |
1437 | static_block_base = 0; | |
1438 | static_block_section = -1; | |
1439 | break; | |
1440 | ||
1441 | case C_ARG: | |
1442 | case C_REGPARM: | |
1443 | case C_REG: | |
1444 | case C_TPDEF: | |
1445 | case C_STRTAG: | |
1446 | case C_UNTAG: | |
1447 | case C_ENTAG: | |
1448 | { | |
3e43a32a MS |
1449 | complaint (&symfile_complaints, |
1450 | _("Unrecognized storage class %d."), | |
23136709 | 1451 | cs->c_sclass); |
c906108c SS |
1452 | } |
1453 | break; | |
1454 | ||
1455 | case C_LABEL: | |
1456 | case C_NULL: | |
1457 | /* Ignore these. */ | |
1458 | break; | |
1459 | ||
1460 | case C_HIDEXT: | |
1461 | case C_STAT: | |
1462 | break; | |
1463 | ||
1464 | case C_BINCL: | |
1465 | /* beginning of include file */ | |
1466 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
581e13c1 MS |
1467 | order. Thus, when wee see them, we might not know enough info |
1468 | to process them. Thus, we'll be saving them into a table | |
1469 | (inclTable) and postpone their processing. */ | |
c906108c SS |
1470 | |
1471 | record_include_begin (cs); | |
1472 | break; | |
1473 | ||
1474 | case C_EINCL: | |
1475 | /* End of include file. */ | |
1476 | /* See the comment after case C_BINCL. */ | |
1477 | record_include_end (cs); | |
1478 | break; | |
1479 | ||
1480 | case C_BLOCK: | |
7ecb6532 | 1481 | if (strcmp (cs->c_name, ".bb") == 0) |
c906108c SS |
1482 | { |
1483 | depth++; | |
fe978cb0 | 1484 | newobj = push_context (depth, |
c906108c SS |
1485 | (cs->c_value |
1486 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1487 | SECT_OFF_TEXT (objfile)))); |
c906108c | 1488 | } |
7ecb6532 | 1489 | else if (strcmp (cs->c_name, ".eb") == 0) |
c906108c SS |
1490 | { |
1491 | if (context_stack_depth <= 0) | |
581e13c1 | 1492 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1493 | eb_complaint (cs->c_symnum); |
c906108c SS |
1494 | break; |
1495 | } | |
fe978cb0 PA |
1496 | newobj = pop_context (); |
1497 | if (depth-- != newobj->depth) | |
c906108c | 1498 | { |
23136709 | 1499 | eb_complaint (cs->c_symnum); |
c906108c SS |
1500 | break; |
1501 | } | |
1502 | if (local_symbols && context_stack_depth > 0) | |
1503 | { | |
1504 | /* Make a block for the local symbols within. */ | |
63e43d3a PMR |
1505 | finish_block (newobj->name, &local_symbols, |
1506 | newobj->old_blocks, NULL, | |
fe978cb0 | 1507 | newobj->start_addr, |
c906108c SS |
1508 | (cs->c_value |
1509 | + ANOFFSET (objfile->section_offsets, | |
4d663531 | 1510 | SECT_OFF_TEXT (objfile)))); |
c906108c | 1511 | } |
fe978cb0 | 1512 | local_symbols = newobj->locals; |
c906108c SS |
1513 | } |
1514 | break; | |
1515 | ||
1516 | default: | |
1517 | process_xcoff_symbol (cs, objfile); | |
1518 | break; | |
1519 | } | |
1520 | } | |
1521 | ||
46212e0b | 1522 | if (get_last_source_file ()) |
c906108c | 1523 | { |
43f3e411 | 1524 | struct compunit_symtab *cust; |
c906108c SS |
1525 | |
1526 | complete_symtab (filestring, file_start_addr); | |
1527 | cur_src_end_addr = file_end_addr; | |
43f3e411 | 1528 | cust = end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c | 1529 | /* When reading symbols for the last C_FILE of the objfile, try |
43f3e411 | 1530 | to make sure that we set pst->compunit_symtab to the symtab for the |
c906108c SS |
1531 | file, not to the _globals_ symtab. I'm not sure whether this |
1532 | actually works right or when/if it comes up. */ | |
43f3e411 DE |
1533 | if (pst->compunit_symtab == NULL) |
1534 | pst->compunit_symtab = cust; | |
c906108c SS |
1535 | end_stabs (); |
1536 | } | |
1537 | } | |
1538 | ||
1539 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
8d749320 | 1540 | (SYMBOL2) = XOBNEW (&objfile->objfile_obstack, struct symbol); \ |
c906108c | 1541 | *(SYMBOL2) = *(SYMBOL1); |
c5aa993b JM |
1542 | |
1543 | ||
c906108c | 1544 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ |
10f0c4bb TT |
1545 | ((ALLOCED) ? (NAME) : obstack_copy0 (&objfile->objfile_obstack, \ |
1546 | (NAME), strlen (NAME))) | |
c906108c SS |
1547 | |
1548 | ||
581e13c1 | 1549 | /* process one xcoff symbol. */ |
c906108c SS |
1550 | |
1551 | static struct symbol * | |
aa1ee363 | 1552 | process_xcoff_symbol (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
1553 | { |
1554 | struct symbol onesymbol; | |
52f0bd74 | 1555 | struct symbol *sym = &onesymbol; |
c906108c SS |
1556 | struct symbol *sym2 = NULL; |
1557 | char *name, *pp; | |
1558 | ||
1559 | int sec; | |
1560 | CORE_ADDR off; | |
1561 | ||
1562 | if (cs->c_secnum < 0) | |
1563 | { | |
1564 | /* The value is a register number, offset within a frame, etc., | |
c5aa993b | 1565 | and does not get relocated. */ |
c906108c SS |
1566 | off = 0; |
1567 | sec = -1; | |
1568 | } | |
1569 | else | |
1570 | { | |
1571 | sec = secnum_to_section (cs->c_secnum, objfile); | |
1572 | off = ANOFFSET (objfile->section_offsets, sec); | |
1573 | } | |
1574 | ||
1575 | name = cs->c_name; | |
1576 | if (name[0] == '.') | |
1577 | ++name; | |
1578 | ||
38bf1463 | 1579 | initialize_objfile_symbol (sym); |
c906108c SS |
1580 | |
1581 | /* default assumptions */ | |
7a78ae4e | 1582 | SYMBOL_VALUE_ADDRESS (sym) = cs->c_value + off; |
176620f1 | 1583 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1584 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); |
1585 | ||
1586 | if (ISFCN (cs->c_type)) | |
1587 | { | |
1588 | /* At this point, we don't know the type of the function. This | |
c5aa993b JM |
1589 | will be patched with the type from its stab entry later on in |
1590 | patch_block_stabs (), unless the file was compiled without -g. */ | |
c906108c | 1591 | |
224c3ddb SM |
1592 | SYMBOL_SET_LINKAGE_NAME (sym, ((const char *) |
1593 | SYMNAME_ALLOC (name, symname_alloced))); | |
46bf5051 | 1594 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_text_symbol; |
c906108c | 1595 | |
f1e6e072 | 1596 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1597 | SYMBOL_DUP (sym, sym2); |
1598 | ||
55bcecda | 1599 | if (cs->c_sclass == C_EXT || C_WEAKEXT) |
c906108c SS |
1600 | add_symbol_to_list (sym2, &global_symbols); |
1601 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1602 | add_symbol_to_list (sym2, &file_symbols); | |
1603 | } | |
1604 | else | |
1605 | { | |
581e13c1 | 1606 | /* In case we can't figure out the type, provide default. */ |
46bf5051 | 1607 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
1608 | |
1609 | switch (cs->c_sclass) | |
1610 | { | |
1611 | #if 0 | |
c5aa993b JM |
1612 | /* The values of functions and global symbols are now resolved |
1613 | via the global_sym_chain in stabsread.c. */ | |
c906108c SS |
1614 | case C_FUN: |
1615 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1616 | add_stab_to_list (name, &global_stabs); | |
1617 | else | |
1618 | add_stab_to_list (name, &file_stabs); | |
1619 | break; | |
1620 | ||
1621 | case C_GSYM: | |
1622 | add_stab_to_list (name, &global_stabs); | |
1623 | break; | |
1624 | #endif | |
1625 | ||
1626 | case C_BCOMM: | |
1627 | common_block_start (cs->c_name, objfile); | |
1628 | break; | |
1629 | ||
1630 | case C_ECOMM: | |
1631 | common_block_end (objfile); | |
1632 | break; | |
1633 | ||
1634 | default: | |
e2e0b3e5 | 1635 | complaint (&symfile_complaints, _("Unexpected storage class: %d"), |
23136709 | 1636 | cs->c_sclass); |
c906108c SS |
1637 | /* FALLTHROUGH */ |
1638 | ||
1639 | case C_DECL: | |
1640 | case C_PSYM: | |
1641 | case C_RPSYM: | |
1642 | case C_ECOML: | |
1643 | case C_LSYM: | |
1644 | case C_RSYM: | |
1645 | case C_GSYM: | |
1646 | ||
1647 | { | |
1648 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1649 | if (sym != NULL) | |
1650 | { | |
1651 | SYMBOL_SECTION (sym) = sec; | |
1652 | } | |
1653 | return sym; | |
1654 | } | |
1655 | ||
1656 | case C_STSYM: | |
1657 | ||
1658 | /* For xlc (not GCC), the 'V' symbol descriptor is used for | |
1659 | all statics and we need to distinguish file-scope versus | |
1660 | function-scope using within_function. We do this by | |
1661 | changing the string we pass to define_symbol to use 'S' | |
1662 | where we need to, which is not necessarily super-clean, | |
1663 | but seems workable enough. */ | |
1664 | ||
9b13a2db PM |
1665 | if (*name == ':') |
1666 | return NULL; | |
1667 | ||
ed4b0e6a | 1668 | pp = strchr (name, ':'); |
9b13a2db | 1669 | if (pp == NULL) |
c906108c SS |
1670 | return NULL; |
1671 | ||
1672 | ++pp; | |
1673 | if (*pp == 'V' && !within_function) | |
1674 | *pp = 'S'; | |
1675 | sym = define_symbol ((cs->c_value | |
1676 | + ANOFFSET (objfile->section_offsets, | |
1677 | static_block_section)), | |
1678 | cs->c_name, 0, 0, objfile); | |
1679 | if (sym != NULL) | |
1680 | { | |
7a78ae4e | 1681 | SYMBOL_VALUE_ADDRESS (sym) += static_block_base; |
c906108c SS |
1682 | SYMBOL_SECTION (sym) = static_block_section; |
1683 | } | |
1684 | return sym; | |
1685 | ||
1686 | } | |
1687 | } | |
1688 | return sym2; | |
1689 | } | |
1690 | ||
1691 | /* Extract the file name from the aux entry of a C_FILE symbol. | |
1692 | Result is in static storage and is only good for temporary use. */ | |
1693 | ||
1694 | static char * | |
fba45db2 | 1695 | coff_getfilename (union internal_auxent *aux_entry, struct objfile *objfile) |
c906108c SS |
1696 | { |
1697 | static char buffer[BUFSIZ]; | |
1698 | ||
1699 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
b8b98ad1 TT |
1700 | strcpy (buffer, (XCOFF_DATA (objfile)->strtbl |
1701 | + aux_entry->x_file.x_n.x_offset)); | |
c906108c SS |
1702 | else |
1703 | { | |
1704 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1705 | buffer[FILNMLEN] = '\0'; | |
1706 | } | |
1707 | return (buffer); | |
1708 | } | |
1709 | ||
1710 | /* Set *SYMBOL to symbol number symno in symtbl. */ | |
1711 | static void | |
fba45db2 | 1712 | read_symbol (struct internal_syment *symbol, int symno) |
c906108c | 1713 | { |
5c80ed9d | 1714 | struct coff_symfile_info *xcoff = XCOFF_DATA (this_symtab_objfile); |
b8b98ad1 TT |
1715 | int nsyms = xcoff->symtbl_num_syms; |
1716 | char *stbl = xcoff->symtbl; | |
a109c7c1 | 1717 | |
c906108c SS |
1718 | if (symno < 0 || symno >= nsyms) |
1719 | { | |
e2e0b3e5 | 1720 | complaint (&symfile_complaints, _("Invalid symbol offset")); |
c906108c SS |
1721 | symbol->n_value = 0; |
1722 | symbol->n_scnum = -1; | |
1723 | return; | |
1724 | } | |
5c80ed9d | 1725 | bfd_coff_swap_sym_in (this_symtab_objfile->obfd, |
c5aa993b | 1726 | stbl + (symno * local_symesz), |
c906108c SS |
1727 | symbol); |
1728 | } | |
c5aa993b | 1729 | |
c906108c SS |
1730 | /* Get value corresponding to symbol number symno in symtbl. */ |
1731 | ||
470d5666 | 1732 | static CORE_ADDR |
fba45db2 | 1733 | read_symbol_nvalue (int symno) |
c906108c SS |
1734 | { |
1735 | struct internal_syment symbol[1]; | |
1736 | ||
1737 | read_symbol (symbol, symno); | |
c5aa993b | 1738 | return symbol->n_value; |
c906108c SS |
1739 | } |
1740 | ||
1741 | ||
1742 | /* Find the address of the function corresponding to symno, where | |
1743 | symno is the symbol pointed to by the linetable. */ | |
1744 | ||
1745 | static int | |
fba45db2 | 1746 | read_symbol_lineno (int symno) |
c906108c | 1747 | { |
5c80ed9d | 1748 | struct objfile *objfile = this_symtab_objfile; |
7af35dad | 1749 | int xcoff64 = bfd_xcoff_is_xcoff64 (objfile->obfd); |
7a78ae4e | 1750 | |
b8b98ad1 | 1751 | struct coff_symfile_info *info = XCOFF_DATA (objfile); |
7a78ae4e ND |
1752 | int nsyms = info->symtbl_num_syms; |
1753 | char *stbl = info->symtbl; | |
1754 | char *strtbl = info->strtbl; | |
1755 | ||
c906108c SS |
1756 | struct internal_syment symbol[1]; |
1757 | union internal_auxent main_aux[1]; | |
1758 | ||
1759 | if (symno < 0) | |
1760 | { | |
23136709 | 1761 | bf_notfound_complaint (); |
c906108c SS |
1762 | return 0; |
1763 | } | |
1764 | ||
1765 | /* Note that just searching for a short distance (e.g. 50 symbols) | |
1766 | is not enough, at least in the following case. | |
1767 | ||
1768 | .extern foo | |
1769 | [many .stabx entries] | |
1770 | [a few functions, referring to foo] | |
1771 | .globl foo | |
1772 | .bf | |
1773 | ||
1774 | What happens here is that the assembler moves the .stabx entries | |
1775 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1776 | all the stabx entries. See PR gdb/2222. */ | |
1777 | ||
1778 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1779 | If I understand things correctly it would need to be done only for | |
1780 | the duration of a single psymtab to symtab conversion. */ | |
1781 | while (symno < nsyms) | |
1782 | { | |
1783 | bfd_coff_swap_sym_in (symfile_bfd, | |
1784 | stbl + (symno * local_symesz), symbol); | |
7a78ae4e ND |
1785 | if (symbol->n_sclass == C_FCN) |
1786 | { | |
1787 | char *name = xcoff64 ? strtbl + symbol->n_offset : symbol->n_name; | |
a109c7c1 | 1788 | |
7ecb6532 | 1789 | if (strcmp (name, ".bf") == 0) |
7a78ae4e ND |
1790 | goto gotit; |
1791 | } | |
c906108c SS |
1792 | symno += symbol->n_numaux + 1; |
1793 | } | |
1794 | ||
23136709 | 1795 | bf_notfound_complaint (); |
c906108c SS |
1796 | return 0; |
1797 | ||
1798 | gotit: | |
581e13c1 | 1799 | /* Take aux entry and return its lineno. */ |
c906108c | 1800 | symno++; |
7a78ae4e | 1801 | bfd_coff_swap_aux_in (objfile->obfd, stbl + symno * local_symesz, |
c906108c SS |
1802 | symbol->n_type, symbol->n_sclass, |
1803 | 0, symbol->n_numaux, main_aux); | |
1804 | ||
1805 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1806 | } | |
1807 | ||
581e13c1 | 1808 | /* Support for line number handling. */ |
c906108c SS |
1809 | |
1810 | /* This function is called for every section; it finds the outer limits | |
1811 | * of the line table (minimum and maximum file offset) so that the | |
1812 | * mainline code can read the whole thing for efficiency. | |
1813 | */ | |
1814 | static void | |
7be0c536 | 1815 | find_linenos (struct bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
1816 | { |
1817 | struct coff_symfile_info *info; | |
1818 | int size, count; | |
1819 | file_ptr offset, maxoff; | |
1820 | ||
1821 | count = asect->lineno_count; | |
1822 | ||
7ecb6532 | 1823 | if (strcmp (asect->name, ".text") != 0 || count == 0) |
c906108c SS |
1824 | return; |
1825 | ||
1826 | size = count * coff_data (abfd)->local_linesz; | |
c5aa993b | 1827 | info = (struct coff_symfile_info *) vpinfo; |
c906108c SS |
1828 | offset = asect->line_filepos; |
1829 | maxoff = offset + size; | |
1830 | ||
1831 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1832 | info->min_lineno_offset = offset; | |
1833 | ||
1834 | if (maxoff > info->max_lineno_offset) | |
1835 | info->max_lineno_offset = maxoff; | |
1836 | } | |
1837 | \f | |
c906108c | 1838 | static void |
5c80ed9d | 1839 | xcoff_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 1840 | { |
c906108c | 1841 | int i; |
c5aa993b | 1842 | |
c906108c SS |
1843 | if (!pst) |
1844 | return; | |
1845 | ||
1846 | if (pst->readin) | |
1847 | { | |
1848 | fprintf_unfiltered | |
1849 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1850 | pst->filename); | |
1851 | return; | |
1852 | } | |
1853 | ||
581e13c1 | 1854 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
1855 | for (i = 0; i < pst->number_of_dependencies; i++) |
1856 | if (!pst->dependencies[i]->readin) | |
1857 | { | |
1858 | /* Inform about additional files that need to be read in. */ | |
1859 | if (info_verbose) | |
1860 | { | |
1861 | fputs_filtered (" ", gdb_stdout); | |
1862 | wrap_here (""); | |
1863 | fputs_filtered ("and ", gdb_stdout); | |
1864 | wrap_here (""); | |
1865 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1866 | wrap_here (""); /* Flush output */ |
c906108c SS |
1867 | gdb_flush (gdb_stdout); |
1868 | } | |
5c80ed9d | 1869 | xcoff_psymtab_to_symtab_1 (objfile, pst->dependencies[i]); |
c906108c SS |
1870 | } |
1871 | ||
c5aa993b | 1872 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0) |
c906108c SS |
1873 | { |
1874 | /* Init stuff necessary for reading in symbols. */ | |
1875 | stabsread_init (); | |
1876 | buildsym_init (); | |
c906108c | 1877 | |
33c7c59d | 1878 | scoped_free_pendings free_pending; |
5c80ed9d | 1879 | read_xcoff_symtab (objfile, pst); |
c906108c SS |
1880 | } |
1881 | ||
1882 | pst->readin = 1; | |
1883 | } | |
1884 | ||
c906108c | 1885 | /* Read in all of the symbols for a given psymtab for real. |
257e7a09 | 1886 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
1887 | |
1888 | static void | |
257e7a09 | 1889 | xcoff_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 1890 | { |
257e7a09 | 1891 | if (self->readin) |
c906108c SS |
1892 | { |
1893 | fprintf_unfiltered | |
1894 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
257e7a09 | 1895 | self->filename); |
c906108c SS |
1896 | return; |
1897 | } | |
1898 | ||
257e7a09 YQ |
1899 | if (((struct symloc *) self->read_symtab_private)->numsyms != 0 |
1900 | || self->number_of_dependencies) | |
c906108c SS |
1901 | { |
1902 | /* Print the message now, before reading the string table, | |
c5aa993b | 1903 | to avoid disconcerting pauses. */ |
c906108c SS |
1904 | if (info_verbose) |
1905 | { | |
257e7a09 | 1906 | printf_filtered ("Reading in symbols for %s...", self->filename); |
c906108c SS |
1907 | gdb_flush (gdb_stdout); |
1908 | } | |
1909 | ||
c906108c SS |
1910 | next_symbol_text_func = xcoff_next_symbol_text; |
1911 | ||
257e7a09 | 1912 | xcoff_psymtab_to_symtab_1 (objfile, self); |
c906108c SS |
1913 | |
1914 | /* Match with global symbols. This only needs to be done once, | |
1915 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 1916 | scan_file_globals (objfile); |
c906108c SS |
1917 | |
1918 | /* Finish up the debug error message. */ | |
1919 | if (info_verbose) | |
1920 | printf_filtered ("done.\n"); | |
1921 | } | |
1922 | } | |
1923 | \f | |
1924 | static void | |
fba45db2 | 1925 | xcoff_new_init (struct objfile *objfile) |
c906108c SS |
1926 | { |
1927 | stabsread_new_init (); | |
1928 | buildsym_new_init (); | |
1929 | } | |
1930 | ||
1931 | /* Do initialization in preparation for reading symbols from OBJFILE. | |
c5aa993b | 1932 | |
c906108c SS |
1933 | We will only be called if this is an XCOFF or XCOFF-like file. |
1934 | BFD handles figuring out the format of the file, and code in symfile.c | |
1935 | uses BFD's determination to vector to us. */ | |
1936 | ||
1937 | static void | |
fba45db2 | 1938 | xcoff_symfile_init (struct objfile *objfile) |
c906108c | 1939 | { |
b8b98ad1 TT |
1940 | struct coff_symfile_info *xcoff; |
1941 | ||
581e13c1 | 1942 | /* Allocate struct to keep track of the symfile. */ |
b8b98ad1 TT |
1943 | xcoff = XNEW (struct coff_symfile_info); |
1944 | set_objfile_data (objfile, xcoff_objfile_data_key, xcoff); | |
c906108c SS |
1945 | |
1946 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1947 | find this causes a significant slowdown in gdb then we could | |
1948 | set it in the debug symbol readers only when necessary. */ | |
1949 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
1950 | } |
1951 | ||
1952 | /* Perform any local cleanups required when we are done with a particular | |
1953 | objfile. I.E, we are in the process of discarding all symbol information | |
1954 | for an objfile, freeing up all memory held for it, and unlinking the | |
581e13c1 | 1955 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
1956 | |
1957 | static void | |
fba45db2 | 1958 | xcoff_symfile_finish (struct objfile *objfile) |
c906108c | 1959 | { |
c906108c SS |
1960 | /* Start with a fresh include table for the next objfile. */ |
1961 | if (inclTable) | |
1962 | { | |
b8c9b27d | 1963 | xfree (inclTable); |
c906108c SS |
1964 | inclTable = NULL; |
1965 | } | |
1966 | inclIndx = inclLength = inclDepth = 0; | |
316a8b21 TG |
1967 | |
1968 | dwarf2_free_objfile (objfile); | |
c906108c SS |
1969 | } |
1970 | ||
1971 | ||
1972 | static void | |
fba45db2 | 1973 | init_stringtab (bfd *abfd, file_ptr offset, struct objfile *objfile) |
c906108c SS |
1974 | { |
1975 | long length; | |
1976 | int val; | |
1977 | unsigned char lengthbuf[4]; | |
1978 | char *strtbl; | |
b8b98ad1 | 1979 | struct coff_symfile_info *xcoff = XCOFF_DATA (objfile); |
c906108c | 1980 | |
b8b98ad1 | 1981 | xcoff->strtbl = NULL; |
c906108c SS |
1982 | |
1983 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) | |
8a3fe4f8 | 1984 | error (_("cannot seek to string table in %s: %s"), |
c906108c SS |
1985 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1986 | ||
3a42e9d0 | 1987 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c SS |
1988 | length = bfd_h_get_32 (abfd, lengthbuf); |
1989 | ||
1990 | /* If no string table is needed, then the file may end immediately | |
1991 | after the symbols. Just return with `strtbl' set to NULL. */ | |
1992 | ||
1993 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1994 | return; | |
1995 | ||
581e13c1 MS |
1996 | /* Allocate string table from objfile_obstack. We will need this table |
1997 | as long as we have its symbol table around. */ | |
c906108c | 1998 | |
4a146b47 | 1999 | strtbl = (char *) obstack_alloc (&objfile->objfile_obstack, length); |
b8b98ad1 | 2000 | xcoff->strtbl = strtbl; |
c906108c SS |
2001 | |
2002 | /* Copy length buffer, the first byte is usually zero and is | |
2003 | used for stabs with a name length of zero. */ | |
2004 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
2005 | if (length == sizeof lengthbuf) | |
2006 | return; | |
2007 | ||
3a42e9d0 | 2008 | val = bfd_bread (strtbl + sizeof lengthbuf, length - sizeof lengthbuf, abfd); |
c906108c SS |
2009 | |
2010 | if (val != length - sizeof lengthbuf) | |
8a3fe4f8 | 2011 | error (_("cannot read string table from %s: %s"), |
c906108c SS |
2012 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
2013 | if (strtbl[length - 1] != '\0') | |
3e43a32a MS |
2014 | error (_("bad symbol file: string table " |
2015 | "does not end with null character")); | |
c906108c SS |
2016 | |
2017 | return; | |
2018 | } | |
2019 | \f | |
2020 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
2021 | have seen one, it is the offset in the line numbers of the line numbers | |
2022 | for the psymtab. */ | |
2023 | static unsigned int first_fun_line_offset; | |
2024 | ||
c906108c SS |
2025 | /* Allocate and partially fill a partial symtab. It will be |
2026 | completely filled at the end of the symbol list. | |
2027 | ||
2028 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2029 | is the address relative to which its symbols are (incremental) or 0 | |
581e13c1 | 2030 | (normal). */ |
c906108c SS |
2031 | |
2032 | static struct partial_symtab * | |
0d5cff50 DE |
2033 | xcoff_start_psymtab (struct objfile *objfile, |
2034 | const char *filename, int first_symnum, | |
af5bf4ad SM |
2035 | std::vector<partial_symbol *> &global_psymbols, |
2036 | std::vector<partial_symbol *> &static_psymbols) | |
c906108c SS |
2037 | { |
2038 | struct partial_symtab *result = | |
18a94d75 | 2039 | start_psymtab_common (objfile, |
a109c7c1 MS |
2040 | filename, |
2041 | /* We fill in textlow later. */ | |
2042 | 0, | |
af5bf4ad | 2043 | global_psymbols, static_psymbols); |
c906108c | 2044 | |
8d749320 SM |
2045 | result->read_symtab_private = |
2046 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 2047 | ((struct symloc *) result->read_symtab_private)->first_symnum = first_symnum; |
257e7a09 | 2048 | result->read_symtab = xcoff_read_symtab; |
c906108c | 2049 | |
581e13c1 | 2050 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
2051 | psymtab_language = deduce_language_from_filename (filename); |
2052 | ||
2053 | return result; | |
2054 | } | |
2055 | ||
581e13c1 | 2056 | /* Close off the current usage of PST. |
c906108c SS |
2057 | Returns PST, or NULL if the partial symtab was empty and thrown away. |
2058 | ||
2059 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). | |
2060 | ||
2061 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES | |
2062 | are the information for includes and dependencies. */ | |
2063 | ||
2064 | static struct partial_symtab * | |
5c80ed9d TT |
2065 | xcoff_end_psymtab (struct objfile *objfile, struct partial_symtab *pst, |
2066 | const char **include_list, int num_includes, | |
2067 | int capping_symbol_number, | |
fba45db2 KB |
2068 | struct partial_symtab **dependency_list, |
2069 | int number_dependencies, int textlow_not_set) | |
c906108c SS |
2070 | { |
2071 | int i; | |
c906108c SS |
2072 | |
2073 | if (capping_symbol_number != -1) | |
c5aa993b | 2074 | ((struct symloc *) pst->read_symtab_private)->numsyms = |
c906108c | 2075 | capping_symbol_number |
c5aa993b JM |
2076 | - ((struct symloc *) pst->read_symtab_private)->first_symnum; |
2077 | ((struct symloc *) pst->read_symtab_private)->lineno_off = | |
c906108c SS |
2078 | first_fun_line_offset; |
2079 | first_fun_line_offset = 0; | |
8763cede DE |
2080 | |
2081 | end_psymtab_common (objfile, pst); | |
c906108c SS |
2082 | |
2083 | pst->number_of_dependencies = number_dependencies; | |
2084 | if (number_dependencies) | |
2085 | { | |
8d749320 SM |
2086 | pst->dependencies = XOBNEWVEC (&objfile->objfile_obstack, |
2087 | struct partial_symtab *, | |
2088 | number_dependencies); | |
c906108c | 2089 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2090 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2091 | } |
2092 | else | |
2093 | pst->dependencies = 0; | |
2094 | ||
2095 | for (i = 0; i < num_includes; i++) | |
2096 | { | |
2097 | struct partial_symtab *subpst = | |
a109c7c1 | 2098 | allocate_psymtab (include_list[i], objfile); |
c906108c | 2099 | |
e38df1d0 TT |
2100 | subpst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack, |
2101 | sizeof (struct symloc)); | |
c5aa993b JM |
2102 | ((struct symloc *) subpst->read_symtab_private)->first_symnum = 0; |
2103 | ((struct symloc *) subpst->read_symtab_private)->numsyms = 0; | |
c906108c SS |
2104 | subpst->textlow = 0; |
2105 | subpst->texthigh = 0; | |
2106 | ||
2107 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2108 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 SM |
2109 | subpst->dependencies = |
2110 | XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
c906108c SS |
2111 | subpst->dependencies[0] = pst; |
2112 | subpst->number_of_dependencies = 1; | |
2113 | ||
2114 | subpst->globals_offset = | |
2115 | subpst->n_global_syms = | |
c5aa993b JM |
2116 | subpst->statics_offset = |
2117 | subpst->n_static_syms = 0; | |
c906108c SS |
2118 | |
2119 | subpst->readin = 0; | |
43f3e411 | 2120 | subpst->compunit_symtab = NULL; |
c906108c SS |
2121 | subpst->read_symtab = pst->read_symtab; |
2122 | } | |
2123 | ||
c906108c SS |
2124 | if (num_includes == 0 |
2125 | && number_dependencies == 0 | |
2126 | && pst->n_global_syms == 0 | |
2127 | && pst->n_static_syms == 0) | |
2128 | { | |
2129 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2130 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2131 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b | 2132 | any symbols in them. There can be a lot of them. */ |
c906108c | 2133 | |
5c80ed9d | 2134 | discard_psymtab (objfile, pst); |
c906108c SS |
2135 | |
2136 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2137 | pst = NULL; |
c906108c SS |
2138 | } |
2139 | return pst; | |
2140 | } | |
2141 | ||
c906108c SS |
2142 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in |
2143 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2144 | the symbol and its auxents. */ | |
2145 | ||
2146 | static void | |
fba45db2 | 2147 | swap_sym (struct internal_syment *symbol, union internal_auxent *aux, |
0d5cff50 | 2148 | const char **name, char **raw, unsigned int *symnump, |
fba45db2 | 2149 | struct objfile *objfile) |
c906108c SS |
2150 | { |
2151 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2152 | if (symbol->n_zeroes) | |
2153 | { | |
2154 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
c5aa993b | 2155 | '\0'-terminated. */ |
c906108c SS |
2156 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') |
2157 | { | |
2158 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2159 | into the minimal symbols. */ | |
2160 | char *p; | |
a109c7c1 | 2161 | |
224c3ddb SM |
2162 | p = (char *) obstack_alloc (&objfile->objfile_obstack, |
2163 | E_SYMNMLEN + 1); | |
c906108c SS |
2164 | strncpy (p, symbol->n_name, E_SYMNMLEN); |
2165 | p[E_SYMNMLEN] = '\0'; | |
2166 | *name = p; | |
2167 | } | |
2168 | else | |
2169 | /* Point to the unswapped name as that persists as long as the | |
2170 | objfile does. */ | |
c5aa993b | 2171 | *name = ((struct external_syment *) *raw)->e.e_name; |
c906108c SS |
2172 | } |
2173 | else if (symbol->n_sclass & 0x80) | |
2174 | { | |
b8b98ad1 | 2175 | *name = XCOFF_DATA (objfile)->debugsec + symbol->n_offset; |
c906108c SS |
2176 | } |
2177 | else | |
2178 | { | |
b8b98ad1 | 2179 | *name = XCOFF_DATA (objfile)->strtbl + symbol->n_offset; |
c906108c SS |
2180 | } |
2181 | ++*symnump; | |
2182 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2183 | if (symbol->n_numaux > 0) | |
2184 | { | |
2185 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2186 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2187 | ||
2188 | *symnump += symbol->n_numaux; | |
2189 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2190 | } | |
2191 | } | |
2192 | ||
23136709 KB |
2193 | static void |
2194 | function_outside_compilation_unit_complaint (const char *arg1) | |
2195 | { | |
2196 | complaint (&symfile_complaints, | |
3e43a32a MS |
2197 | _("function `%s' appears to be defined " |
2198 | "outside of all compilation units"), | |
23136709 KB |
2199 | arg1); |
2200 | } | |
2201 | ||
c906108c | 2202 | static void |
8dddcb8f TT |
2203 | scan_xcoff_symtab (minimal_symbol_reader &reader, |
2204 | struct objfile *objfile) | |
c906108c | 2205 | { |
40c58d95 | 2206 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
581e13c1 | 2207 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
0d5cff50 | 2208 | const char *filestring = NULL; |
c906108c | 2209 | |
0d5cff50 | 2210 | const char *namestring; |
c906108c SS |
2211 | bfd *abfd; |
2212 | asection *bfd_sect; | |
2213 | unsigned int nsyms; | |
2214 | ||
2215 | /* Current partial symtab */ | |
2216 | struct partial_symtab *pst; | |
2217 | ||
581e13c1 | 2218 | /* List of current psymtab's include files. */ |
0d5cff50 | 2219 | const char **psymtab_include_list; |
c906108c SS |
2220 | int includes_allocated; |
2221 | int includes_used; | |
2222 | ||
581e13c1 | 2223 | /* Index within current psymtab dependency list. */ |
c906108c SS |
2224 | struct partial_symtab **dependency_list; |
2225 | int dependencies_used, dependencies_allocated; | |
2226 | ||
2227 | char *sraw_symbol; | |
2228 | struct internal_syment symbol; | |
96baa820 | 2229 | union internal_auxent main_aux[5]; |
c906108c SS |
2230 | unsigned int ssymnum; |
2231 | ||
0d5cff50 | 2232 | const char *last_csect_name = NULL; /* Last seen csect's name and value. */ |
c906108c SS |
2233 | CORE_ADDR last_csect_val = 0; |
2234 | int last_csect_sec = 0; | |
581e13c1 | 2235 | int misc_func_recorded = 0; /* true if any misc. function. */ |
c906108c SS |
2236 | int textlow_not_set = 1; |
2237 | ||
2238 | pst = (struct partial_symtab *) 0; | |
2239 | ||
2240 | includes_allocated = 30; | |
2241 | includes_used = 0; | |
0d5cff50 DE |
2242 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2243 | sizeof (const char *)); | |
c906108c SS |
2244 | |
2245 | dependencies_allocated = 30; | |
2246 | dependencies_used = 0; | |
2247 | dependency_list = | |
2248 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2249 | sizeof (struct partial_symtab *)); | |
2250 | ||
46212e0b | 2251 | set_last_source_file (NULL); |
c906108c SS |
2252 | |
2253 | abfd = objfile->obfd; | |
13c763f4 | 2254 | next_symbol_text_func = xcoff_next_symbol_text; |
c906108c | 2255 | |
b8b98ad1 TT |
2256 | sraw_symbol = XCOFF_DATA (objfile)->symtbl; |
2257 | nsyms = XCOFF_DATA (objfile)->symtbl_num_syms; | |
c906108c SS |
2258 | ssymnum = 0; |
2259 | while (ssymnum < nsyms) | |
2260 | { | |
7a78ae4e | 2261 | int sclass; |
c906108c SS |
2262 | |
2263 | QUIT; | |
2264 | ||
7a78ae4e ND |
2265 | bfd_coff_swap_sym_in (abfd, sraw_symbol, &symbol); |
2266 | sclass = symbol.n_sclass; | |
2267 | ||
c906108c SS |
2268 | switch (sclass) |
2269 | { | |
2270 | case C_EXT: | |
2271 | case C_HIDEXT: | |
55bcecda | 2272 | case C_WEAKEXT: |
c906108c SS |
2273 | { |
2274 | /* The CSECT auxent--always the last auxent. */ | |
2275 | union internal_auxent csect_aux; | |
2276 | unsigned int symnum_before = ssymnum; | |
2277 | ||
96baa820 | 2278 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2279 | &ssymnum, objfile); |
2280 | if (symbol.n_numaux > 1) | |
2281 | { | |
2282 | bfd_coff_swap_aux_in | |
2283 | (objfile->obfd, | |
c5aa993b | 2284 | sraw_symbol - coff_data (abfd)->local_symesz, |
c906108c SS |
2285 | symbol.n_type, |
2286 | symbol.n_sclass, | |
2287 | symbol.n_numaux - 1, | |
2288 | symbol.n_numaux, | |
2289 | &csect_aux); | |
2290 | } | |
2291 | else | |
96baa820 | 2292 | csect_aux = main_aux[0]; |
c906108c | 2293 | |
977adac5 ND |
2294 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2295 | if (namestring[0] == '$' | |
c906108c SS |
2296 | || (namestring[0] == '.' && namestring[1] == '$')) |
2297 | break; | |
2298 | ||
2299 | switch (csect_aux.x_csect.x_smtyp & 0x7) | |
2300 | { | |
2301 | case XTY_SD: | |
2302 | switch (csect_aux.x_csect.x_smclas) | |
2303 | { | |
2304 | case XMC_PR: | |
2305 | if (last_csect_name) | |
2306 | { | |
2307 | /* If no misc. function recorded in the last | |
581e13c1 | 2308 | seen csect, enter it as a function. This |
c906108c SS |
2309 | will take care of functions like strcmp() |
2310 | compiled by xlc. */ | |
2311 | ||
2312 | if (!misc_func_recorded) | |
2313 | { | |
ec92004f | 2314 | record_minimal_symbol |
8dddcb8f | 2315 | (reader, last_csect_name, last_csect_val, |
ec92004f JB |
2316 | mst_text, last_csect_sec, objfile); |
2317 | misc_func_recorded = 1; | |
c906108c SS |
2318 | } |
2319 | ||
2320 | if (pst != NULL) | |
2321 | { | |
2322 | /* We have to allocate one psymtab for | |
2323 | each program csect, because their text | |
2324 | sections need not be adjacent. */ | |
2325 | xcoff_end_psymtab | |
5c80ed9d TT |
2326 | (objfile, pst, psymtab_include_list, |
2327 | includes_used, symnum_before, dependency_list, | |
c906108c SS |
2328 | dependencies_used, textlow_not_set); |
2329 | includes_used = 0; | |
2330 | dependencies_used = 0; | |
2331 | /* Give all psymtabs for this source file the same | |
2332 | name. */ | |
2333 | pst = xcoff_start_psymtab | |
d4f3574e | 2334 | (objfile, |
c906108c SS |
2335 | filestring, |
2336 | symnum_before, | |
af5bf4ad SM |
2337 | objfile->global_psymbols, |
2338 | objfile->static_psymbols); | |
c906108c SS |
2339 | } |
2340 | } | |
977adac5 ND |
2341 | /* Activate the misc_func_recorded mechanism for |
2342 | compiler- and linker-generated CSECTs like ".strcmp" | |
2343 | and "@FIX1". */ | |
2344 | if (namestring && (namestring[0] == '.' | |
2345 | || namestring[0] == '@')) | |
c906108c SS |
2346 | { |
2347 | last_csect_name = namestring; | |
2348 | last_csect_val = symbol.n_value; | |
ec92004f | 2349 | last_csect_sec = symbol.n_scnum; |
c906108c SS |
2350 | } |
2351 | if (pst != NULL) | |
2352 | { | |
2353 | CORE_ADDR highval = | |
a109c7c1 MS |
2354 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; |
2355 | ||
c906108c SS |
2356 | if (highval > pst->texthigh) |
2357 | pst->texthigh = highval; | |
2358 | if (pst->textlow == 0 || symbol.n_value < pst->textlow) | |
2359 | pst->textlow = symbol.n_value; | |
2360 | } | |
2361 | misc_func_recorded = 0; | |
2362 | break; | |
2363 | ||
2364 | case XMC_RW: | |
6904b546 | 2365 | case XMC_TD: |
c906108c SS |
2366 | /* Data variables are recorded in the minimal symbol |
2367 | table, except for section symbols. */ | |
2368 | if (*namestring != '.') | |
4d1eb6b4 | 2369 | record_minimal_symbol |
8dddcb8f | 2370 | (reader, namestring, symbol.n_value, |
c906108c | 2371 | sclass == C_HIDEXT ? mst_file_data : mst_data, |
4d1eb6b4 | 2372 | symbol.n_scnum, objfile); |
c906108c SS |
2373 | break; |
2374 | ||
2375 | case XMC_TC0: | |
2376 | if (toc_offset) | |
8a3fe4f8 | 2377 | warning (_("More than one XMC_TC0 symbol found.")); |
c906108c SS |
2378 | toc_offset = symbol.n_value; |
2379 | ||
3e43a32a MS |
2380 | /* Make TOC offset relative to start address of |
2381 | section. */ | |
c906108c SS |
2382 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); |
2383 | if (bfd_sect) | |
2384 | toc_offset -= bfd_section_vma (objfile->obfd, bfd_sect); | |
2385 | break; | |
2386 | ||
2387 | case XMC_TC: | |
2388 | /* These symbols tell us where the TOC entry for a | |
2389 | variable is, not the variable itself. */ | |
2390 | break; | |
2391 | ||
2392 | default: | |
2393 | break; | |
2394 | } | |
2395 | break; | |
2396 | ||
2397 | case XTY_LD: | |
2398 | switch (csect_aux.x_csect.x_smclas) | |
2399 | { | |
2400 | case XMC_PR: | |
2401 | /* A function entry point. */ | |
2402 | ||
2403 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2404 | first_fun_line_offset = | |
96baa820 | 2405 | main_aux[0].x_sym.x_fcnary.x_fcn.x_lnnoptr; |
a2e3e93f SM |
2406 | |
2407 | record_minimal_symbol | |
8dddcb8f | 2408 | (reader, namestring, symbol.n_value, |
a2e3e93f SM |
2409 | sclass == C_HIDEXT ? mst_file_text : mst_text, |
2410 | symbol.n_scnum, objfile); | |
2411 | misc_func_recorded = 1; | |
c906108c SS |
2412 | break; |
2413 | ||
2414 | case XMC_GL: | |
2415 | /* shared library function trampoline code entry | |
581e13c1 | 2416 | point. */ |
c906108c SS |
2417 | |
2418 | /* record trampoline code entries as | |
2419 | mst_solib_trampoline symbol. When we lookup mst | |
2420 | symbols, we will choose mst_text over | |
581e13c1 | 2421 | mst_solib_trampoline. */ |
ec92004f | 2422 | record_minimal_symbol |
8dddcb8f | 2423 | (reader, namestring, symbol.n_value, |
ec92004f JB |
2424 | mst_solib_trampoline, symbol.n_scnum, objfile); |
2425 | misc_func_recorded = 1; | |
c906108c SS |
2426 | break; |
2427 | ||
2428 | case XMC_DS: | |
2429 | /* The symbols often have the same names as | |
2430 | debug symbols for functions, and confuse | |
2431 | lookup_symbol. */ | |
2432 | break; | |
2433 | ||
2434 | default: | |
2435 | ||
2436 | /* xlc puts each variable in a separate csect, | |
2437 | so we get an XTY_SD for each variable. But | |
2438 | gcc puts several variables in a csect, so | |
2439 | that each variable only gets an XTY_LD. We | |
2440 | still need to record them. This will | |
2441 | typically be XMC_RW; I suspect XMC_RO and | |
2442 | XMC_BS might be possible too. */ | |
2443 | if (*namestring != '.') | |
4d1eb6b4 | 2444 | record_minimal_symbol |
8dddcb8f | 2445 | (reader, namestring, symbol.n_value, |
c906108c | 2446 | sclass == C_HIDEXT ? mst_file_data : mst_data, |
4d1eb6b4 | 2447 | symbol.n_scnum, objfile); |
c906108c SS |
2448 | break; |
2449 | } | |
2450 | break; | |
2451 | ||
2452 | case XTY_CM: | |
2453 | switch (csect_aux.x_csect.x_smclas) | |
2454 | { | |
2455 | case XMC_RW: | |
2456 | case XMC_BS: | |
2457 | /* Common variables are recorded in the minimal symbol | |
2458 | table, except for section symbols. */ | |
2459 | if (*namestring != '.') | |
4d1eb6b4 | 2460 | record_minimal_symbol |
8dddcb8f | 2461 | (reader, namestring, symbol.n_value, |
c906108c | 2462 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, |
4d1eb6b4 | 2463 | symbol.n_scnum, objfile); |
c906108c SS |
2464 | break; |
2465 | } | |
2466 | break; | |
2467 | ||
2468 | default: | |
2469 | break; | |
2470 | } | |
2471 | } | |
2472 | break; | |
2473 | case C_FILE: | |
2474 | { | |
2475 | unsigned int symnum_before; | |
2476 | ||
2477 | symnum_before = ssymnum; | |
96baa820 | 2478 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2479 | &ssymnum, objfile); |
2480 | ||
2481 | /* See if the last csect needs to be recorded. */ | |
2482 | ||
2483 | if (last_csect_name && !misc_func_recorded) | |
2484 | { | |
c906108c SS |
2485 | /* If no misc. function recorded in the last seen csect, enter |
2486 | it as a function. This will take care of functions like | |
2487 | strcmp() compiled by xlc. */ | |
2488 | ||
8dddcb8f | 2489 | record_minimal_symbol (reader, last_csect_name, last_csect_val, |
ec92004f JB |
2490 | mst_text, last_csect_sec, objfile); |
2491 | misc_func_recorded = 1; | |
c906108c SS |
2492 | } |
2493 | ||
2494 | if (pst) | |
2495 | { | |
5c80ed9d TT |
2496 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, |
2497 | includes_used, symnum_before, | |
2498 | dependency_list, dependencies_used, | |
2499 | textlow_not_set); | |
c906108c SS |
2500 | includes_used = 0; |
2501 | dependencies_used = 0; | |
2502 | } | |
2503 | first_fun_line_offset = 0; | |
2504 | ||
2505 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2506 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2507 | do things the standard COFF way and put it in the auxent. | |
2508 | We use the auxent if the symbol is ".file" and an auxent | |
2509 | exists, otherwise use the symbol itself. */ | |
2510 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2511 | { | |
96baa820 | 2512 | filestring = coff_getfilename (&main_aux[0], objfile); |
c906108c SS |
2513 | } |
2514 | else | |
2515 | filestring = namestring; | |
2516 | ||
d4f3574e | 2517 | pst = xcoff_start_psymtab (objfile, |
c906108c SS |
2518 | filestring, |
2519 | symnum_before, | |
af5bf4ad SM |
2520 | objfile->global_psymbols, |
2521 | objfile->static_psymbols); | |
c906108c SS |
2522 | last_csect_name = NULL; |
2523 | } | |
2524 | break; | |
2525 | ||
2526 | default: | |
2527 | { | |
23136709 | 2528 | complaint (&symfile_complaints, |
3e43a32a MS |
2529 | _("Storage class %d not recognized during scan"), |
2530 | sclass); | |
c906108c SS |
2531 | } |
2532 | /* FALLTHROUGH */ | |
2533 | ||
2534 | /* C_FCN is .bf and .ef symbols. I think it is sufficient | |
2535 | to handle only the C_FUN and C_EXT. */ | |
2536 | case C_FCN: | |
2537 | ||
2538 | case C_BSTAT: | |
2539 | case C_ESTAT: | |
2540 | case C_ARG: | |
2541 | case C_REGPARM: | |
2542 | case C_REG: | |
2543 | case C_TPDEF: | |
2544 | case C_STRTAG: | |
2545 | case C_UNTAG: | |
2546 | case C_ENTAG: | |
2547 | case C_LABEL: | |
2548 | case C_NULL: | |
2549 | ||
2550 | /* C_EINCL means we are switching back to the main file. But there | |
2551 | is no reason to care; the only thing we want to know about | |
2552 | includes is the names of all the included (.h) files. */ | |
2553 | case C_EINCL: | |
2554 | ||
2555 | case C_BLOCK: | |
2556 | ||
2557 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2558 | used instead. */ | |
2559 | case C_STAT: | |
2560 | ||
2561 | /* I don't think the name of the common block (as opposed to the | |
2562 | variables within it) is something which is user visible | |
2563 | currently. */ | |
2564 | case C_BCOMM: | |
2565 | case C_ECOMM: | |
2566 | ||
2567 | case C_PSYM: | |
2568 | case C_RPSYM: | |
2569 | ||
2570 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2571 | so C_LSYM would appear to be only for locals. */ | |
2572 | case C_LSYM: | |
2573 | ||
2574 | case C_AUTO: | |
2575 | case C_RSYM: | |
2576 | { | |
2577 | /* We probably could save a few instructions by assuming that | |
2578 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
7a78ae4e | 2579 | int naux1 = symbol.n_numaux + 1; |
a109c7c1 | 2580 | |
c906108c | 2581 | ssymnum += naux1; |
7a78ae4e | 2582 | sraw_symbol += bfd_coff_symesz (abfd) * naux1; |
c906108c SS |
2583 | } |
2584 | break; | |
2585 | ||
2586 | case C_BINCL: | |
d5d0a62f | 2587 | { |
581e13c1 | 2588 | /* Mark down an include file in the current psymtab. */ |
d5d0a62f | 2589 | enum language tmp_language; |
a109c7c1 | 2590 | |
d5d0a62f EZ |
2591 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2592 | &ssymnum, objfile); | |
2593 | ||
2594 | tmp_language = deduce_language_from_filename (namestring); | |
2595 | ||
2596 | /* Only change the psymtab's language if we've learned | |
2597 | something useful (eg. tmp_language is not language_unknown). | |
2598 | In addition, to match what start_subfile does, never change | |
2599 | from C++ to C. */ | |
2600 | if (tmp_language != language_unknown | |
2601 | && (tmp_language != language_c | |
2602 | || psymtab_language != language_cplus)) | |
2603 | psymtab_language = tmp_language; | |
2604 | ||
2605 | /* In C++, one may expect the same filename to come round many | |
2606 | times, when code is coming alternately from the main file | |
581e13c1 | 2607 | and from inline functions in other files. So I check to see |
d5d0a62f EZ |
2608 | if this is a file we've seen before -- either the main |
2609 | source file, or a previously included file. | |
2610 | ||
2611 | This seems to be a lot of time to be spending on N_SOL, but | |
2612 | things like "break c-exp.y:435" need to work (I | |
2613 | suppose the psymtab_include_list could be hashed or put | |
2614 | in a binary tree, if profiling shows this is a major hog). */ | |
7ecb6532 | 2615 | if (pst && strcmp (namestring, pst->filename) == 0) |
d5d0a62f | 2616 | continue; |
a109c7c1 | 2617 | |
d5d0a62f | 2618 | { |
aa1ee363 | 2619 | int i; |
a109c7c1 | 2620 | |
d5d0a62f | 2621 | for (i = 0; i < includes_used; i++) |
7ecb6532 | 2622 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
d5d0a62f EZ |
2623 | { |
2624 | i = -1; | |
2625 | break; | |
2626 | } | |
2627 | if (i == -1) | |
2628 | continue; | |
2629 | } | |
2630 | psymtab_include_list[includes_used++] = namestring; | |
2631 | if (includes_used >= includes_allocated) | |
2632 | { | |
0d5cff50 | 2633 | const char **orig = psymtab_include_list; |
c906108c | 2634 | |
0d5cff50 | 2635 | psymtab_include_list = (const char **) |
d5d0a62f | 2636 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 2637 | sizeof (const char *)); |
4efb68b1 | 2638 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 2639 | includes_used * sizeof (const char *)); |
d5d0a62f EZ |
2640 | } |
2641 | continue; | |
2642 | } | |
c906108c SS |
2643 | case C_FUN: |
2644 | /* The value of the C_FUN is not the address of the function (it | |
2645 | appears to be the address before linking), but as long as it | |
2646 | is smaller than the actual address, then find_pc_partial_function | |
2647 | will use the minimal symbols instead. I hope. */ | |
2648 | ||
2649 | case C_GSYM: | |
2650 | case C_ECOML: | |
2651 | case C_DECL: | |
2652 | case C_STSYM: | |
d5d0a62f | 2653 | { |
e28566f7 | 2654 | const char *p; |
a109c7c1 | 2655 | |
d5d0a62f EZ |
2656 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2657 | &ssymnum, objfile); | |
2658 | ||
ed4b0e6a | 2659 | p = strchr (namestring, ':'); |
d5d0a62f EZ |
2660 | if (!p) |
2661 | continue; /* Not a debugging symbol. */ | |
2662 | ||
2663 | /* Main processing section for debugging symbols which | |
2664 | the initial read through the symbol tables needs to worry | |
2665 | about. If we reach this point, the symbol which we are | |
2666 | considering is definitely one we are interested in. | |
2667 | p must also contain the (valid) index into the namestring | |
2668 | which indicates the debugging type symbol. */ | |
2669 | ||
2670 | switch (p[1]) | |
2671 | { | |
2672 | case 'S': | |
3e43a32a MS |
2673 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2674 | SECT_OFF_DATA (objfile)); | |
149ad273 | 2675 | |
5e2b427d | 2676 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 2677 | namestring = gdbarch_static_transform_name |
5e2b427d | 2678 | (gdbarch, namestring); |
149ad273 | 2679 | |
04a679b8 | 2680 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2681 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f | 2682 | &objfile->static_psymbols, |
1762568f | 2683 | symbol.n_value, |
d5d0a62f EZ |
2684 | psymtab_language, objfile); |
2685 | continue; | |
2686 | ||
2687 | case 'G': | |
3e43a32a MS |
2688 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2689 | SECT_OFF_DATA (objfile)); | |
d5d0a62f | 2690 | /* The addresses in these entries are reported to be |
581e13c1 | 2691 | wrong. See the code that reads 'G's for symtabs. */ |
04a679b8 | 2692 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2693 | VAR_DOMAIN, LOC_STATIC, |
d5d0a62f | 2694 | &objfile->global_psymbols, |
1762568f | 2695 | symbol.n_value, |
d5d0a62f EZ |
2696 | psymtab_language, objfile); |
2697 | continue; | |
2698 | ||
2699 | case 'T': | |
2700 | /* When a 'T' entry is defining an anonymous enum, it | |
2701 | may have a name which is the empty string, or a | |
2702 | single space. Since they're not really defining a | |
2703 | symbol, those shouldn't go in the partial symbol | |
2704 | table. We do pick up the elements of such enums at | |
2705 | 'check_enum:', below. */ | |
2706 | if (p >= namestring + 2 | |
2707 | || (p == namestring + 1 | |
2708 | && namestring[0] != ' ')) | |
2709 | { | |
04a679b8 | 2710 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2711 | STRUCT_DOMAIN, LOC_TYPEDEF, |
d5d0a62f | 2712 | &objfile->static_psymbols, |
1762568f | 2713 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2714 | if (p[2] == 't') |
2715 | { | |
2716 | /* Also a typedef with the same name. */ | |
04a679b8 | 2717 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2718 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f | 2719 | &objfile->static_psymbols, |
1762568f | 2720 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2721 | p += 1; |
2722 | } | |
d5d0a62f EZ |
2723 | } |
2724 | goto check_enum; | |
2725 | ||
2726 | case 't': | |
581e13c1 | 2727 | if (p != namestring) /* a name is there, not just :T... */ |
d5d0a62f | 2728 | { |
04a679b8 | 2729 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2730 | VAR_DOMAIN, LOC_TYPEDEF, |
d5d0a62f | 2731 | &objfile->static_psymbols, |
1762568f | 2732 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2733 | } |
2734 | check_enum: | |
2735 | /* If this is an enumerated type, we need to | |
2736 | add all the enum constants to the partial symbol | |
2737 | table. This does not cover enums without names, e.g. | |
2738 | "enum {a, b} c;" in C, but fortunately those are | |
2739 | rare. There is no way for GDB to find those from the | |
2740 | enum type without spending too much time on it. Thus | |
2741 | to solve this problem, the compiler needs to put out the | |
2742 | enum in a nameless type. GCC2 does this. */ | |
2743 | ||
2744 | /* We are looking for something of the form | |
2745 | <name> ":" ("t" | "T") [<number> "="] "e" | |
2746 | {<constant> ":" <value> ","} ";". */ | |
2747 | ||
2748 | /* Skip over the colon and the 't' or 'T'. */ | |
2749 | p += 2; | |
2750 | /* This type may be given a number. Also, numbers can come | |
2751 | in pairs like (0,26). Skip over it. */ | |
2752 | while ((*p >= '0' && *p <= '9') | |
2753 | || *p == '(' || *p == ',' || *p == ')' | |
2754 | || *p == '=') | |
2755 | p++; | |
2756 | ||
2757 | if (*p++ == 'e') | |
2758 | { | |
3e43a32a MS |
2759 | /* The aix4 compiler emits extra crud before the |
2760 | members. */ | |
d5d0a62f EZ |
2761 | if (*p == '-') |
2762 | { | |
2763 | /* Skip over the type (?). */ | |
2764 | while (*p != ':') | |
2765 | p++; | |
2766 | ||
2767 | /* Skip over the colon. */ | |
2768 | p++; | |
2769 | } | |
2770 | ||
2771 | /* We have found an enumerated type. */ | |
2772 | /* According to comments in read_enum_type | |
2773 | a comma could end it instead of a semicolon. | |
2774 | I don't know where that happens. | |
2775 | Accept either. */ | |
2776 | while (*p && *p != ';' && *p != ',') | |
2777 | { | |
e28566f7 | 2778 | const char *q; |
d5d0a62f EZ |
2779 | |
2780 | /* Check for and handle cretinous dbx symbol name | |
2781 | continuation! */ | |
2782 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
2783 | p = next_symbol_text (objfile); | |
2784 | ||
2785 | /* Point to the character after the name | |
2786 | of the enum constant. */ | |
2787 | for (q = p; *q && *q != ':'; q++) | |
2788 | ; | |
2789 | /* Note that the value doesn't matter for | |
2790 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 2791 | add_psymbol_to_list (p, q - p, 1, |
176620f1 | 2792 | VAR_DOMAIN, LOC_CONST, |
1762568f | 2793 | &objfile->static_psymbols, |
d5d0a62f EZ |
2794 | 0, psymtab_language, objfile); |
2795 | /* Point past the name. */ | |
2796 | p = q; | |
2797 | /* Skip over the value. */ | |
2798 | while (*p && *p != ',') | |
2799 | p++; | |
2800 | /* Advance past the comma. */ | |
2801 | if (*p) | |
2802 | p++; | |
2803 | } | |
2804 | } | |
2805 | continue; | |
2806 | ||
2807 | case 'c': | |
2808 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 2809 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2810 | VAR_DOMAIN, LOC_CONST, |
1762568f | 2811 | &objfile->static_psymbols, |
d5d0a62f EZ |
2812 | 0, psymtab_language, objfile); |
2813 | continue; | |
2814 | ||
2815 | case 'f': | |
2816 | if (! pst) | |
2817 | { | |
2818 | int name_len = p - namestring; | |
224c3ddb | 2819 | char *name = (char *) xmalloc (name_len + 1); |
a109c7c1 | 2820 | |
d5d0a62f EZ |
2821 | memcpy (name, namestring, name_len); |
2822 | name[name_len] = '\0'; | |
23136709 | 2823 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2824 | xfree (name); |
2825 | } | |
3e43a32a MS |
2826 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2827 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2828 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2829 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f | 2830 | &objfile->static_psymbols, |
1762568f | 2831 | symbol.n_value, |
d5d0a62f EZ |
2832 | psymtab_language, objfile); |
2833 | continue; | |
2834 | ||
2835 | /* Global functions were ignored here, but now they | |
2836 | are put into the global psymtab like one would expect. | |
2837 | They're also in the minimal symbol table. */ | |
2838 | case 'F': | |
2839 | if (! pst) | |
2840 | { | |
2841 | int name_len = p - namestring; | |
224c3ddb | 2842 | char *name = (char *) xmalloc (name_len + 1); |
a109c7c1 | 2843 | |
d5d0a62f EZ |
2844 | memcpy (name, namestring, name_len); |
2845 | name[name_len] = '\0'; | |
23136709 | 2846 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2847 | xfree (name); |
2848 | } | |
9f1d5432 PH |
2849 | |
2850 | /* We need only the minimal symbols for these | |
581e13c1 | 2851 | loader-generated definitions. Keeping the global |
9f1d5432 | 2852 | symbols leads to "in psymbols but not in symbols" |
581e13c1 | 2853 | errors. */ |
61012eef | 2854 | if (startswith (namestring, "@FIX")) |
9f1d5432 PH |
2855 | continue; |
2856 | ||
3e43a32a MS |
2857 | symbol.n_value += ANOFFSET (objfile->section_offsets, |
2858 | SECT_OFF_TEXT (objfile)); | |
04a679b8 | 2859 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2860 | VAR_DOMAIN, LOC_BLOCK, |
d5d0a62f | 2861 | &objfile->global_psymbols, |
1762568f | 2862 | symbol.n_value, |
d5d0a62f EZ |
2863 | psymtab_language, objfile); |
2864 | continue; | |
2865 | ||
2866 | /* Two things show up here (hopefully); static symbols of | |
2867 | local scope (static used inside braces) or extensions | |
2868 | of structure symbols. We can ignore both. */ | |
2869 | case 'V': | |
2870 | case '(': | |
2871 | case '0': | |
2872 | case '1': | |
2873 | case '2': | |
2874 | case '3': | |
2875 | case '4': | |
2876 | case '5': | |
2877 | case '6': | |
2878 | case '7': | |
2879 | case '8': | |
2880 | case '9': | |
2881 | case '-': | |
3e43a32a MS |
2882 | case '#': /* For symbol identification (used in |
2883 | live ranges). */ | |
d5d0a62f EZ |
2884 | continue; |
2885 | ||
2886 | case ':': | |
2887 | /* It is a C++ nested symbol. We don't need to record it | |
2888 | (I don't think); if we try to look up foo::bar::baz, | |
2889 | then symbols for the symtab containing foo should get | |
2890 | read in, I think. */ | |
2891 | /* Someone says sun cc puts out symbols like | |
2892 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2893 | which would get here with a symbol type of ':'. */ | |
2894 | continue; | |
2895 | ||
2896 | default: | |
3e43a32a MS |
2897 | /* Unexpected symbol descriptor. The second and |
2898 | subsequent stabs of a continued stab can show up | |
2899 | here. The question is whether they ever can mimic | |
2900 | a normal stab--it would be nice if not, since we | |
2901 | certainly don't want to spend the time searching to | |
2902 | the end of every string looking for a | |
2903 | backslash. */ | |
d5d0a62f | 2904 | |
23136709 | 2905 | complaint (&symfile_complaints, |
e2e0b3e5 | 2906 | _("unknown symbol descriptor `%c'"), p[1]); |
d5d0a62f EZ |
2907 | |
2908 | /* Ignore it; perhaps it is an extension that we don't | |
2909 | know about. */ | |
2910 | continue; | |
2911 | } | |
2912 | } | |
c906108c SS |
2913 | } |
2914 | } | |
2915 | ||
2916 | if (pst) | |
2917 | { | |
5c80ed9d | 2918 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
c906108c SS |
2919 | ssymnum, dependency_list, |
2920 | dependencies_used, textlow_not_set); | |
2921 | } | |
2922 | ||
581e13c1 MS |
2923 | /* Record the toc offset value of this symbol table into objfile |
2924 | structure. If no XMC_TC0 is found, toc_offset should be zero. | |
2925 | Another place to obtain this information would be file auxiliary | |
2926 | header. */ | |
c906108c | 2927 | |
b8b98ad1 | 2928 | XCOFF_DATA (objfile)->toc_offset = toc_offset; |
c906108c SS |
2929 | } |
2930 | ||
2931 | /* Return the toc offset value for a given objfile. */ | |
2932 | ||
2933 | CORE_ADDR | |
63807e1d | 2934 | xcoff_get_toc_offset (struct objfile *objfile) |
c906108c SS |
2935 | { |
2936 | if (objfile) | |
b8b98ad1 | 2937 | return XCOFF_DATA (objfile)->toc_offset; |
c906108c SS |
2938 | return 0; |
2939 | } | |
2940 | ||
2941 | /* Scan and build partial symbols for a symbol file. | |
2942 | We have been initialized by a call to dbx_symfile_init, which | |
2943 | put all the relevant info into a "struct dbx_symfile_info", | |
2944 | hung off the objfile structure. | |
2945 | ||
2946 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
581e13c1 MS |
2947 | various sections are (depending where the sections were actually |
2948 | loaded). */ | |
c906108c SS |
2949 | |
2950 | static void | |
b15cc25c | 2951 | xcoff_initial_scan (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
2952 | { |
2953 | bfd *abfd; | |
2954 | int val; | |
c5aa993b JM |
2955 | int num_symbols; /* # of symbols */ |
2956 | file_ptr symtab_offset; /* symbol table and */ | |
2957 | file_ptr stringtab_offset; /* string table file offsets */ | |
c906108c | 2958 | struct coff_symfile_info *info; |
4262abfb | 2959 | const char *name; |
c906108c SS |
2960 | unsigned int size; |
2961 | ||
b8b98ad1 | 2962 | info = XCOFF_DATA (objfile); |
c906108c | 2963 | symfile_bfd = abfd = objfile->obfd; |
4262abfb | 2964 | name = objfile_name (objfile); |
c906108c SS |
2965 | |
2966 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2967 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2968 | stringtab_offset = symtab_offset + | |
c5aa993b | 2969 | num_symbols * coff_data (abfd)->local_symesz; |
c906108c SS |
2970 | |
2971 | info->min_lineno_offset = 0; | |
2972 | info->max_lineno_offset = 0; | |
2973 | bfd_map_over_sections (abfd, find_linenos, info); | |
2974 | ||
2975 | if (num_symbols > 0) | |
2976 | { | |
2977 | /* Read the string table. */ | |
2978 | init_stringtab (abfd, stringtab_offset, objfile); | |
2979 | ||
97cbe998 SDJ |
2980 | /* Read the .debug section, if present and if we're not ignoring |
2981 | it. */ | |
2982 | if (!(objfile->flags & OBJF_READNEVER)) | |
2983 | { | |
2984 | struct bfd_section *secp; | |
2985 | bfd_size_type length; | |
2986 | bfd_byte *debugsec = NULL; | |
c906108c | 2987 | |
97cbe998 SDJ |
2988 | secp = bfd_get_section_by_name (abfd, ".debug"); |
2989 | if (secp) | |
2990 | { | |
2991 | length = bfd_section_size (abfd, secp); | |
2992 | if (length) | |
2993 | { | |
2994 | debugsec | |
2995 | = (bfd_byte *) obstack_alloc (&objfile->objfile_obstack, | |
2996 | length); | |
c906108c | 2997 | |
97cbe998 SDJ |
2998 | if (!bfd_get_full_section_contents (abfd, secp, &debugsec)) |
2999 | { | |
3000 | error (_("Error reading .debug section of `%s': %s"), | |
3001 | name, bfd_errmsg (bfd_get_error ())); | |
3002 | } | |
3003 | } | |
3004 | } | |
3005 | info->debugsec = (char *) debugsec; | |
3006 | } | |
c906108c SS |
3007 | } |
3008 | ||
3009 | /* Read the symbols. We keep them in core because we will want to | |
3010 | access them randomly in read_symbol*. */ | |
3011 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); | |
3012 | if (val < 0) | |
8a3fe4f8 | 3013 | error (_("Error reading symbols from %s: %s"), |
c906108c SS |
3014 | name, bfd_errmsg (bfd_get_error ())); |
3015 | size = coff_data (abfd)->local_symesz * num_symbols; | |
224c3ddb | 3016 | info->symtbl = (char *) obstack_alloc (&objfile->objfile_obstack, size); |
b8b98ad1 TT |
3017 | info->symtbl_num_syms = num_symbols; |
3018 | ||
3019 | val = bfd_bread (info->symtbl, size, abfd); | |
c906108c | 3020 | if (val != size) |
e2e0b3e5 | 3021 | perror_with_name (_("reading symbol table")); |
c906108c | 3022 | |
581e13c1 | 3023 | /* If we are reinitializing, or if we have never loaded syms yet, init. */ |
af5bf4ad SM |
3024 | if (objfile->global_psymbols.capacity () == 0 |
3025 | && objfile->static_psymbols.capacity () == 0) | |
c906108c SS |
3026 | /* I'm not sure how how good num_symbols is; the rule of thumb in |
3027 | init_psymbol_list was developed for a.out. On the one hand, | |
3028 | num_symbols includes auxents. On the other hand, it doesn't | |
3029 | include N_SLINE. */ | |
3030 | init_psymbol_list (objfile, num_symbols); | |
3031 | ||
3032 | free_pending_blocks (); | |
c906108c | 3033 | |
33c7c59d | 3034 | scoped_free_pendings free_pending; |
d25e8719 | 3035 | minimal_symbol_reader reader (objfile); |
c906108c SS |
3036 | |
3037 | /* Now that the symbol table data of the executable file are all in core, | |
3038 | process them and define symbols accordingly. */ | |
3039 | ||
8dddcb8f | 3040 | scan_xcoff_symtab (reader, objfile); |
c906108c SS |
3041 | |
3042 | /* Install any minimal symbols that have been collected as the current | |
581e13c1 | 3043 | minimal symbols for this objfile. */ |
c906108c | 3044 | |
d25e8719 | 3045 | reader.install (); |
c906108c | 3046 | |
316a8b21 TG |
3047 | /* DWARF2 sections. */ |
3048 | ||
3049 | if (dwarf2_has_info (objfile, &dwarf2_xcoff_names)) | |
3050 | dwarf2_build_psymtabs (objfile); | |
3051 | ||
3052 | dwarf2_build_frame_info (objfile); | |
c906108c SS |
3053 | } |
3054 | \f | |
d4f3574e | 3055 | static void |
3e43a32a | 3056 | xcoff_symfile_offsets (struct objfile *objfile, |
37e136b1 | 3057 | const section_addr_info &addrs) |
c906108c | 3058 | { |
4d1eb6b4 | 3059 | const char *first_section_name; |
c906108c | 3060 | |
4d1eb6b4 | 3061 | default_symfile_offsets (objfile, addrs); |
c906108c | 3062 | |
4d1eb6b4 JB |
3063 | /* Oneof the weird side-effects of default_symfile_offsets is that |
3064 | it sometimes sets some section indices to zero for sections that, | |
3065 | in fact do not exist. See the body of default_symfile_offsets | |
3066 | for more info on when that happens. Undo that, as this then allows | |
3067 | us to test whether the associated section exists or not, and then | |
3068 | access it quickly (without searching it again). */ | |
b8fbeb18 | 3069 | |
4d1eb6b4 JB |
3070 | if (objfile->num_sections == 0) |
3071 | return; /* Is that even possible? Better safe than sorry. */ | |
b8fbeb18 | 3072 | |
4d1eb6b4 JB |
3073 | first_section_name |
3074 | = bfd_section_name (objfile->obfd, objfile->sections[0].the_bfd_section); | |
b8fbeb18 | 3075 | |
4d1eb6b4 JB |
3076 | if (objfile->sect_index_text == 0 |
3077 | && strcmp (first_section_name, ".text") != 0) | |
3078 | objfile->sect_index_text = -1; | |
b8fbeb18 | 3079 | |
4d1eb6b4 JB |
3080 | if (objfile->sect_index_data == 0 |
3081 | && strcmp (first_section_name, ".data") != 0) | |
3082 | objfile->sect_index_data = -1; | |
3083 | ||
3084 | if (objfile->sect_index_bss == 0 | |
3085 | && strcmp (first_section_name, ".bss") != 0) | |
3086 | objfile->sect_index_bss = -1; | |
3087 | ||
3088 | if (objfile->sect_index_rodata == 0 | |
3089 | && strcmp (first_section_name, ".rodata") != 0) | |
3090 | objfile->sect_index_rodata = -1; | |
c906108c SS |
3091 | } |
3092 | ||
3093 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
3094 | ||
00b5771c | 3095 | static const struct sym_fns xcoff_sym_fns = |
c906108c SS |
3096 | { |
3097 | ||
7a78ae4e | 3098 | /* It is possible that coff and xcoff should be merged as |
c906108c SS |
3099 | they do have fundamental similarities (for example, the extra storage |
3100 | classes used for stabs could presumably be recognized in any COFF file). | |
3101 | However, in addition to obvious things like all the csect hair, there are | |
3102 | some subtler differences between xcoffread.c and coffread.c, notably | |
3103 | the fact that coffread.c has no need to read in all the symbols, but | |
3104 | xcoffread.c reads all the symbols and does in fact randomly access them | |
3105 | (in C_BSTAT and line number processing). */ | |
3106 | ||
3e43a32a MS |
3107 | xcoff_new_init, /* init anything gbl to entire symtab */ |
3108 | xcoff_symfile_init, /* read initial info, setup for sym_read() */ | |
3109 | xcoff_initial_scan, /* read a symbol file into symtab */ | |
b11896a5 | 3110 | NULL, /* sym_read_psymbols */ |
3e43a32a MS |
3111 | xcoff_symfile_finish, /* finished with file, cleanup */ |
3112 | xcoff_symfile_offsets, /* xlate offsets ext->int form */ | |
3113 | default_symfile_segments, /* Get segment information from a file. */ | |
3114 | aix_process_linenos, | |
3115 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3116 | NULL, /* sym_probe_fns */ |
00b5771c | 3117 | &psym_functions |
c906108c SS |
3118 | }; |
3119 | ||
d5367fe1 JB |
3120 | /* Same as xcoff_get_n_import_files, but for core files. */ |
3121 | ||
3122 | static int | |
3123 | xcoff_get_core_n_import_files (bfd *abfd) | |
3124 | { | |
3125 | asection *sect = bfd_get_section_by_name (abfd, ".ldinfo"); | |
3126 | gdb_byte buf[4]; | |
3127 | file_ptr offset = 0; | |
3128 | int n_entries = 0; | |
3129 | ||
3130 | if (sect == NULL) | |
3131 | return -1; /* Not a core file. */ | |
3132 | ||
3133 | for (offset = 0; offset < bfd_get_section_size (sect);) | |
3134 | { | |
3135 | int next; | |
3136 | ||
3137 | n_entries++; | |
3138 | ||
3139 | if (!bfd_get_section_contents (abfd, sect, buf, offset, 4)) | |
3140 | return -1; | |
3141 | next = bfd_get_32 (abfd, buf); | |
3142 | if (next == 0) | |
3143 | break; /* This is the last entry. */ | |
3144 | offset += next; | |
3145 | } | |
3146 | ||
3147 | /* Return the number of entries, excluding the first one, which is | |
3148 | the path to the executable that produced this core file. */ | |
3149 | return n_entries - 1; | |
3150 | } | |
3151 | ||
3152 | /* Return the number of import files (shared libraries) that the given | |
3153 | BFD depends on. Return -1 if this number could not be computed. */ | |
3154 | ||
3155 | int | |
3156 | xcoff_get_n_import_files (bfd *abfd) | |
3157 | { | |
3158 | asection *sect = bfd_get_section_by_name (abfd, ".loader"); | |
3159 | gdb_byte buf[4]; | |
3160 | int l_nimpid; | |
3161 | ||
3162 | /* If the ".loader" section does not exist, the objfile is probably | |
3163 | not an executable. Might be a core file... */ | |
3164 | if (sect == NULL) | |
3165 | return xcoff_get_core_n_import_files (abfd); | |
3166 | ||
3167 | /* The number of entries in the Import Files Table is stored in | |
3168 | field l_nimpid. This field is always at offset 16, and is | |
3169 | always 4 bytes long. Read those 4 bytes. */ | |
3170 | ||
3171 | if (!bfd_get_section_contents (abfd, sect, buf, 16, 4)) | |
3172 | return -1; | |
3173 | l_nimpid = bfd_get_32 (abfd, buf); | |
3174 | ||
3175 | /* By convention, the first entry is the default LIBPATH value | |
3176 | to be used by the system loader, so it does not count towards | |
3177 | the number of import files. */ | |
3178 | return l_nimpid - 1; | |
3179 | } | |
3180 | ||
b8b98ad1 TT |
3181 | /* Free the per-objfile xcoff data. */ |
3182 | ||
3183 | static void | |
3184 | xcoff_free_info (struct objfile *objfile, void *arg) | |
3185 | { | |
3186 | xfree (arg); | |
3187 | } | |
3188 | ||
c906108c | 3189 | void |
fba45db2 | 3190 | _initialize_xcoffread (void) |
c906108c | 3191 | { |
c256e171 | 3192 | add_symtab_fns (bfd_target_xcoff_flavour, &xcoff_sym_fns); |
b8b98ad1 TT |
3193 | |
3194 | xcoff_objfile_data_key = register_objfile_data_with_cleanup (NULL, | |
3195 | xcoff_free_info); | |
c906108c | 3196 | } |