Commit | Line | Data |
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c906108c | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
42a4f53d | 2 | Copyright (C) 1986-2019 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" | |
0baae8db | 44 | #include "buildsym-legacy.h" |
c906108c SS |
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 SS |
55 | \f |
56 | /* We put a pointer to this structure in the read_symtab_private field | |
57 | of the psymtab. */ | |
58 | ||
c5aa993b JM |
59 | struct symloc |
60 | { | |
c906108c | 61 | |
c5aa993b | 62 | /* First symbol number for this file. */ |
c906108c | 63 | |
c5aa993b | 64 | int first_symnum; |
c906108c | 65 | |
c5aa993b JM |
66 | /* Number of symbols in the section of the symbol table devoted to |
67 | this file's symbols (actually, the section bracketed may contain | |
68 | more than just this file's symbols). If numsyms is 0, the only | |
69 | reason for this thing's existence is the dependency list. Nothing | |
70 | else will happen when it is read in. */ | |
c906108c | 71 | |
c5aa993b | 72 | int numsyms; |
c906108c | 73 | |
3e43a32a MS |
74 | /* Position of the start of the line number information for this |
75 | psymtab. */ | |
c5aa993b JM |
76 | unsigned int lineno_off; |
77 | }; | |
c906108c | 78 | |
581e13c1 | 79 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
80 | |
81 | static enum language psymtab_language = language_unknown; | |
c906108c | 82 | \f |
c5aa993b | 83 | |
581e13c1 | 84 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 85 | |
c5aa993b JM |
86 | struct coff_symbol |
87 | { | |
88 | char *c_name; | |
581e13c1 MS |
89 | int c_symnum; /* Symbol number of this entry. */ |
90 | int c_naux; /* 0 if syment only, 1 if syment + auxent. */ | |
086850b2 | 91 | CORE_ADDR c_value; |
c5aa993b JM |
92 | unsigned char c_sclass; |
93 | int c_secnum; | |
94 | unsigned int c_type; | |
95 | }; | |
c906108c | 96 | |
581e13c1 | 97 | /* Last function's saved coff symbol `cs'. */ |
c906108c SS |
98 | |
99 | static struct coff_symbol fcn_cs_saved; | |
100 | ||
101 | static bfd *symfile_bfd; | |
102 | ||
103 | /* Core address of start and end of text of current source file. | |
104 | This is calculated from the first function seen after a C_FILE | |
581e13c1 | 105 | symbol. */ |
c906108c SS |
106 | |
107 | ||
108 | static CORE_ADDR cur_src_end_addr; | |
109 | ||
110 | /* Core address of the end of the first object file. */ | |
111 | ||
112 | static CORE_ADDR first_object_file_end; | |
113 | ||
581e13c1 | 114 | /* Initial symbol-table-debug-string vector length. */ |
c906108c SS |
115 | |
116 | #define INITIAL_STABVECTOR_LENGTH 40 | |
117 | ||
c906108c SS |
118 | /* Size of a COFF symbol. I think it is always 18, so I'm not sure |
119 | there is any reason not to just use a #define, but might as well | |
120 | ask BFD for the size and store it here, I guess. */ | |
121 | ||
c5aa993b | 122 | static unsigned local_symesz; |
c906108c | 123 | |
02dc647e | 124 | struct xcoff_symfile_info |
c5aa993b | 125 | { |
02dc647e TT |
126 | file_ptr min_lineno_offset {}; /* Where in file lowest line#s are. */ |
127 | file_ptr max_lineno_offset {}; /* 1+last byte of line#s in file. */ | |
c906108c | 128 | |
c5aa993b | 129 | /* Pointer to the string table. */ |
02dc647e | 130 | char *strtbl = nullptr; |
c906108c | 131 | |
c5aa993b | 132 | /* Pointer to debug section. */ |
02dc647e | 133 | char *debugsec = nullptr; |
c906108c | 134 | |
c5aa993b | 135 | /* Pointer to the a.out symbol table. */ |
02dc647e | 136 | char *symtbl = nullptr; |
c906108c | 137 | |
c5aa993b | 138 | /* Number of symbols in symtbl. */ |
02dc647e | 139 | int symtbl_num_syms = 0; |
c906108c | 140 | |
c5aa993b | 141 | /* Offset in data section to TOC anchor. */ |
02dc647e | 142 | CORE_ADDR toc_offset = 0; |
c5aa993b | 143 | }; |
c906108c | 144 | |
02dc647e TT |
145 | /* Key for XCOFF-associated data. */ |
146 | ||
147 | static const struct objfile_key<xcoff_symfile_info> xcoff_objfile_data_key; | |
148 | ||
b8b98ad1 TT |
149 | /* Convenience macro to access the per-objfile XCOFF data. */ |
150 | ||
151 | #define XCOFF_DATA(objfile) \ | |
02dc647e | 152 | xcoff_objfile_data_key.get (objfile) |
b8b98ad1 | 153 | |
316a8b21 TG |
154 | /* XCOFF names for dwarf sections. There is no compressed sections. */ |
155 | ||
156 | static const struct dwarf2_debug_sections dwarf2_xcoff_names = { | |
157 | { ".dwinfo", NULL }, | |
158 | { ".dwabrev", NULL }, | |
159 | { ".dwline", NULL }, | |
160 | { ".dwloc", NULL }, | |
43988095 | 161 | { NULL, NULL }, /* debug_loclists */ |
33f914a1 DE |
162 | /* AIX XCOFF defines one, named DWARF section for macro debug information. |
163 | XLC does not generate debug_macinfo for DWARF4 and below. | |
164 | The section is assigned to debug_macro for DWARF5 and above. */ | |
165 | { NULL, NULL }, | |
166 | { ".dwmac", NULL }, | |
316a8b21 | 167 | { ".dwstr", NULL }, |
43988095 | 168 | { NULL, NULL }, /* debug_line_str */ |
316a8b21 | 169 | { ".dwrnges", NULL }, |
43988095 | 170 | { NULL, NULL }, /* debug_rnglists */ |
33f914a1 | 171 | { ".dwpbtyp", NULL }, |
3019eac3 | 172 | { NULL, NULL }, /* debug_addr */ |
316a8b21 TG |
173 | { ".dwframe", NULL }, |
174 | { NULL, NULL }, /* eh_frame */ | |
24d3216f | 175 | { NULL, NULL }, /* gdb_index */ |
927aa2e7 JK |
176 | { NULL, NULL }, /* debug_names */ |
177 | { NULL, NULL }, /* debug_aranges */ | |
24d3216f | 178 | 23 |
316a8b21 TG |
179 | }; |
180 | ||
23136709 KB |
181 | static void |
182 | bf_notfound_complaint (void) | |
183 | { | |
b98664d3 | 184 | complaint (_("line numbers off, `.bf' symbol not found")); |
23136709 | 185 | } |
c906108c | 186 | |
23136709 KB |
187 | static void |
188 | ef_complaint (int arg1) | |
189 | { | |
b98664d3 | 190 | complaint (_("Mismatched .ef symbol ignored starting at symnum %d"), arg1); |
23136709 | 191 | } |
c906108c | 192 | |
23136709 KB |
193 | static void |
194 | eb_complaint (int arg1) | |
195 | { | |
b98664d3 | 196 | complaint (_("Mismatched .eb symbol ignored starting at symnum %d"), arg1); |
23136709 | 197 | } |
c906108c | 198 | |
b15cc25c | 199 | static void xcoff_initial_scan (struct objfile *, symfile_add_flags); |
c906108c | 200 | |
8dddcb8f TT |
201 | static void scan_xcoff_symtab (minimal_symbol_reader &, |
202 | struct objfile *); | |
c906108c | 203 | |
a121b7c1 | 204 | static const char *xcoff_next_symbol_text (struct objfile *); |
c906108c | 205 | |
a14ed312 | 206 | static void record_include_begin (struct coff_symbol *); |
c906108c SS |
207 | |
208 | static void | |
a14ed312 KB |
209 | enter_line_range (struct subfile *, unsigned, unsigned, |
210 | CORE_ADDR, CORE_ADDR, unsigned *); | |
c906108c | 211 | |
a14ed312 | 212 | static void init_stringtab (bfd *, file_ptr, struct objfile *); |
c906108c | 213 | |
a14ed312 | 214 | static void xcoff_symfile_init (struct objfile *); |
c906108c | 215 | |
a14ed312 | 216 | static void xcoff_new_init (struct objfile *); |
c906108c | 217 | |
a14ed312 | 218 | static void xcoff_symfile_finish (struct objfile *); |
c906108c | 219 | |
a14ed312 | 220 | static char *coff_getfilename (union internal_auxent *, struct objfile *); |
c906108c | 221 | |
a14ed312 | 222 | static void read_symbol (struct internal_syment *, int); |
c906108c | 223 | |
a14ed312 | 224 | static int read_symbol_lineno (int); |
c906108c | 225 | |
470d5666 | 226 | static CORE_ADDR read_symbol_nvalue (int); |
c906108c | 227 | |
a14ed312 KB |
228 | static struct symbol *process_xcoff_symbol (struct coff_symbol *, |
229 | struct objfile *); | |
c906108c | 230 | |
5c80ed9d | 231 | static void read_xcoff_symtab (struct objfile *, struct partial_symtab *); |
c906108c SS |
232 | |
233 | #if 0 | |
a14ed312 | 234 | static void add_stab_to_list (char *, struct pending_stabs **); |
c906108c SS |
235 | #endif |
236 | ||
a14ed312 | 237 | static int compare_lte (const void *, const void *); |
c906108c | 238 | |
a14ed312 | 239 | static struct linetable *arrange_linetable (struct linetable *); |
c906108c | 240 | |
a14ed312 | 241 | static void record_include_end (struct coff_symbol *); |
c906108c | 242 | |
a14ed312 | 243 | static void process_linenos (CORE_ADDR, CORE_ADDR); |
c906108c | 244 | \f |
c5aa993b | 245 | |
c906108c SS |
246 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
247 | code. */ | |
a14ed312 KB |
248 | static int secnum_to_section (int, struct objfile *); |
249 | static asection *secnum_to_bfd_section (int, struct objfile *); | |
c906108c | 250 | |
c5aa993b JM |
251 | struct find_targ_sec_arg |
252 | { | |
253 | int targ_index; | |
254 | int *resultp; | |
255 | asection **bfd_sect; | |
b8fbeb18 | 256 | struct objfile *objfile; |
c5aa993b | 257 | }; |
c906108c | 258 | |
a14ed312 | 259 | static void find_targ_sec (bfd *, asection *, void *); |
c906108c | 260 | |
c5aa993b | 261 | static void |
4efb68b1 | 262 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 263 | { |
c5aa993b | 264 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
b8fbeb18 | 265 | struct objfile *objfile = args->objfile; |
a109c7c1 | 266 | |
c906108c SS |
267 | if (sect->target_index == args->targ_index) |
268 | { | |
269 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
270 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
b8fbeb18 | 271 | *args->resultp = SECT_OFF_TEXT (objfile); |
c906108c | 272 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) |
b8fbeb18 | 273 | *args->resultp = SECT_OFF_DATA (objfile); |
c906108c | 274 | else |
65cf3563 | 275 | *args->resultp = gdb_bfd_section_index (abfd, sect); |
c906108c SS |
276 | *args->bfd_sect = sect; |
277 | } | |
278 | } | |
279 | ||
ec92004f JB |
280 | /* Search all BFD sections for the section whose target_index is |
281 | equal to N_SCNUM. Set *BFD_SECT to that section. The section's | |
282 | associated index in the objfile's section_offset table is also | |
283 | stored in *SECNUM. | |
284 | ||
285 | If no match is found, *BFD_SECT is set to NULL, and *SECNUM | |
286 | is set to the text section's number. */ | |
a109c7c1 | 287 | |
ec92004f JB |
288 | static void |
289 | xcoff_secnum_to_sections (int n_scnum, struct objfile *objfile, | |
290 | asection **bfd_sect, int *secnum) | |
291 | { | |
c906108c | 292 | struct find_targ_sec_arg args; |
ec92004f JB |
293 | |
294 | args.targ_index = n_scnum; | |
295 | args.resultp = secnum; | |
296 | args.bfd_sect = bfd_sect; | |
b8fbeb18 | 297 | args.objfile = objfile; |
ec92004f JB |
298 | |
299 | *bfd_sect = NULL; | |
300 | *secnum = SECT_OFF_TEXT (objfile); | |
301 | ||
c906108c | 302 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
c906108c SS |
303 | } |
304 | ||
ec92004f JB |
305 | /* Return the section number (SECT_OFF_*) that N_SCNUM points to. */ |
306 | ||
307 | static int | |
308 | secnum_to_section (int n_scnum, struct objfile *objfile) | |
309 | { | |
310 | int secnum; | |
311 | asection *ignored; | |
312 | ||
313 | xcoff_secnum_to_sections (n_scnum, objfile, &ignored, &secnum); | |
314 | return secnum; | |
315 | } | |
316 | ||
317 | /* Return the BFD section that N_SCNUM points to. */ | |
318 | ||
c906108c | 319 | static asection * |
ec92004f | 320 | secnum_to_bfd_section (int n_scnum, struct objfile *objfile) |
c906108c | 321 | { |
ec92004f JB |
322 | int ignored; |
323 | asection *bfd_sect; | |
a109c7c1 | 324 | |
ec92004f JB |
325 | xcoff_secnum_to_sections (n_scnum, objfile, &bfd_sect, &ignored); |
326 | return bfd_sect; | |
c906108c SS |
327 | } |
328 | \f | |
581e13c1 | 329 | /* add a given stab string into given stab vector. */ |
c906108c SS |
330 | |
331 | #if 0 | |
332 | ||
333 | static void | |
fba45db2 | 334 | add_stab_to_list (char *stabname, struct pending_stabs **stabvector) |
c906108c | 335 | { |
c5aa993b JM |
336 | if (*stabvector == NULL) |
337 | { | |
338 | *stabvector = (struct pending_stabs *) | |
339 | xmalloc (sizeof (struct pending_stabs) + | |
340 | INITIAL_STABVECTOR_LENGTH * sizeof (char *)); | |
341 | (*stabvector)->count = 0; | |
342 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
343 | } | |
344 | else if ((*stabvector)->count >= (*stabvector)->length) | |
345 | { | |
346 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
347 | *stabvector = (struct pending_stabs *) | |
348 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + | |
3e43a32a | 349 | (*stabvector)->length * sizeof (char *)); |
c5aa993b JM |
350 | } |
351 | (*stabvector)->stab[(*stabvector)->count++] = stabname; | |
c906108c SS |
352 | } |
353 | ||
354 | #endif | |
c5aa993b | 355 | \f/* *INDENT-OFF* */ |
c906108c SS |
356 | /* Linenos are processed on a file-by-file basis. |
357 | ||
358 | Two reasons: | |
359 | ||
c5aa993b | 360 | 1) xlc (IBM's native c compiler) postpones static function code |
581e13c1 | 361 | emission to the end of a compilation unit. This way it can |
c5aa993b | 362 | determine if those functions (statics) are needed or not, and |
581e13c1 | 363 | can do some garbage collection (I think). This makes line |
c5aa993b JM |
364 | numbers and corresponding addresses unordered, and we end up |
365 | with a line table like: | |
366 | ||
367 | ||
368 | lineno addr | |
369 | foo() 10 0x100 | |
370 | 20 0x200 | |
371 | 30 0x300 | |
372 | ||
373 | foo3() 70 0x400 | |
374 | 80 0x500 | |
375 | 90 0x600 | |
376 | ||
377 | static foo2() | |
378 | 40 0x700 | |
379 | 50 0x800 | |
380 | 60 0x900 | |
381 | ||
382 | and that breaks gdb's binary search on line numbers, if the | |
581e13c1 | 383 | above table is not sorted on line numbers. And that sort |
c5aa993b JM |
384 | should be on function based, since gcc can emit line numbers |
385 | like: | |
386 | ||
387 | 10 0x100 - for the init/test part of a for stmt. | |
388 | 20 0x200 | |
389 | 30 0x300 | |
390 | 10 0x400 - for the increment part of a for stmt. | |
391 | ||
581e13c1 | 392 | arrange_linetable() will do this sorting. |
c5aa993b JM |
393 | |
394 | 2) aix symbol table might look like: | |
395 | ||
396 | c_file // beginning of a new file | |
397 | .bi // beginning of include file | |
398 | .ei // end of include file | |
399 | .bi | |
400 | .ei | |
401 | ||
402 | basically, .bi/.ei pairs do not necessarily encapsulate | |
581e13c1 | 403 | their scope. They need to be recorded, and processed later |
c5aa993b JM |
404 | on when we come the end of the compilation unit. |
405 | Include table (inclTable) and process_linenos() handle | |
406 | that. */ | |
9846de1b | 407 | /* *INDENT-ON* */ |
c906108c | 408 | |
c5aa993b JM |
409 | |
410 | ||
581e13c1 | 411 | /* compare line table entry addresses. */ |
c906108c SS |
412 | |
413 | static int | |
fba45db2 | 414 | compare_lte (const void *lte1p, const void *lte2p) |
c906108c SS |
415 | { |
416 | struct linetable_entry *lte1 = (struct linetable_entry *) lte1p; | |
417 | struct linetable_entry *lte2 = (struct linetable_entry *) lte2p; | |
a109c7c1 | 418 | |
c906108c SS |
419 | return lte1->pc - lte2->pc; |
420 | } | |
421 | ||
581e13c1 MS |
422 | /* Given a line table with function entries are marked, arrange its |
423 | functions in ascending order and strip off function entry markers | |
424 | and return it in a newly created table. If the old one is good | |
425 | enough, return the old one. */ | |
c906108c SS |
426 | /* FIXME: I think all this stuff can be replaced by just passing |
427 | sort_linevec = 1 to end_symtab. */ | |
428 | ||
429 | static struct linetable * | |
b095261a | 430 | arrange_linetable (struct linetable *oldLineTb) |
c906108c | 431 | { |
c5aa993b JM |
432 | int ii, jj, newline, /* new line count */ |
433 | function_count; /* # of functions */ | |
c906108c | 434 | |
c5aa993b JM |
435 | struct linetable_entry *fentry; /* function entry vector */ |
436 | int fentry_size; /* # of function entries */ | |
437 | struct linetable *newLineTb; /* new line table */ | |
a85c52f2 | 438 | int extra_lines = 0; |
c906108c SS |
439 | |
440 | #define NUM_OF_FUNCTIONS 20 | |
441 | ||
442 | fentry_size = NUM_OF_FUNCTIONS; | |
8d749320 | 443 | fentry = XNEWVEC (struct linetable_entry, fentry_size); |
c906108c | 444 | |
c5aa993b JM |
445 | for (function_count = 0, ii = 0; ii < oldLineTb->nitems; ++ii) |
446 | { | |
c5aa993b | 447 | if (oldLineTb->item[ii].line == 0) |
581e13c1 | 448 | { /* Function entry found. */ |
c5aa993b | 449 | if (function_count >= fentry_size) |
581e13c1 | 450 | { /* Make sure you have room. */ |
c5aa993b JM |
451 | fentry_size *= 2; |
452 | fentry = (struct linetable_entry *) | |
3e43a32a MS |
453 | xrealloc (fentry, |
454 | fentry_size * sizeof (struct linetable_entry)); | |
c5aa993b JM |
455 | } |
456 | fentry[function_count].line = ii; | |
457 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
458 | ++function_count; | |
a85c52f2 UW |
459 | |
460 | /* If the function was compiled with XLC, we may have to add an | |
461 | extra line entry later. Reserve space for that. */ | |
462 | if (ii + 1 < oldLineTb->nitems | |
463 | && oldLineTb->item[ii].pc != oldLineTb->item[ii + 1].pc) | |
464 | extra_lines++; | |
c5aa993b | 465 | } |
c906108c | 466 | } |
c906108c | 467 | |
c5aa993b JM |
468 | if (function_count == 0) |
469 | { | |
b8c9b27d | 470 | xfree (fentry); |
c5aa993b JM |
471 | return oldLineTb; |
472 | } | |
c906108c | 473 | else if (function_count > 1) |
3e43a32a MS |
474 | qsort (fentry, function_count, |
475 | sizeof (struct linetable_entry), compare_lte); | |
c906108c | 476 | |
581e13c1 | 477 | /* Allocate a new line table. */ |
c906108c SS |
478 | newLineTb = (struct linetable *) |
479 | xmalloc | |
c5aa993b | 480 | (sizeof (struct linetable) + |
a85c52f2 | 481 | (oldLineTb->nitems - function_count + extra_lines) * sizeof (struct linetable_entry)); |
c906108c | 482 | |
581e13c1 MS |
483 | /* If line table does not start with a function beginning, copy up until |
484 | a function begin. */ | |
c906108c SS |
485 | |
486 | newline = 0; | |
487 | if (oldLineTb->item[0].line != 0) | |
c5aa993b JM |
488 | for (newline = 0; |
489 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
c906108c SS |
490 | newLineTb->item[newline] = oldLineTb->item[newline]; |
491 | ||
581e13c1 | 492 | /* Now copy function lines one by one. */ |
c906108c | 493 | |
c5aa993b JM |
494 | for (ii = 0; ii < function_count; ++ii) |
495 | { | |
a85c52f2 UW |
496 | /* If the function was compiled with XLC, we may have to add an |
497 | extra line to cover the function prologue. */ | |
498 | jj = fentry[ii].line; | |
499 | if (jj + 1 < oldLineTb->nitems | |
500 | && oldLineTb->item[jj].pc != oldLineTb->item[jj + 1].pc) | |
501 | { | |
502 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
503 | newLineTb->item[newline].line = oldLineTb->item[jj + 1].line; | |
504 | newline++; | |
505 | } | |
506 | ||
c5aa993b JM |
507 | for (jj = fentry[ii].line + 1; |
508 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
509 | ++jj, ++newline) | |
510 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
511 | } | |
b8c9b27d | 512 | xfree (fentry); |
a85c52f2 UW |
513 | /* The number of items in the line table must include these |
514 | extra lines which were added in case of XLC compiled functions. */ | |
515 | newLineTb->nitems = oldLineTb->nitems - function_count + extra_lines; | |
c5aa993b JM |
516 | return newLineTb; |
517 | } | |
c906108c SS |
518 | |
519 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
581e13c1 | 520 | following `IncludeChain'. At the end of each symtab (end_symtab), |
c906108c | 521 | we will determine if we should create additional symtab's to |
581e13c1 | 522 | represent if (the include files. */ |
c906108c SS |
523 | |
524 | ||
c5aa993b JM |
525 | typedef struct _inclTable |
526 | { | |
527 | char *name; /* include filename */ | |
c906108c SS |
528 | |
529 | /* Offsets to the line table. end points to the last entry which is | |
530 | part of this include file. */ | |
c5aa993b JM |
531 | int begin, end; |
532 | ||
c906108c | 533 | struct subfile *subfile; |
581e13c1 | 534 | unsigned funStartLine; /* Start line # of its function. */ |
c5aa993b JM |
535 | } |
536 | InclTable; | |
c906108c SS |
537 | |
538 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
c5aa993b JM |
539 | static InclTable *inclTable; /* global include table */ |
540 | static int inclIndx; /* last entry to table */ | |
541 | static int inclLength; /* table length */ | |
542 | static int inclDepth; /* nested include depth */ | |
c906108c | 543 | |
a14ed312 | 544 | static void allocate_include_entry (void); |
c906108c SS |
545 | |
546 | static void | |
fba45db2 | 547 | record_include_begin (struct coff_symbol *cs) |
c906108c SS |
548 | { |
549 | if (inclDepth) | |
550 | { | |
551 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
c5aa993b | 552 | of course, but in corresponding .s files.). */ |
c906108c SS |
553 | |
554 | /* This can happen with old versions of GCC. | |
c5aa993b JM |
555 | GCC 2.3.3-930426 does not exhibit this on a test case which |
556 | a user said produced the message for him. */ | |
b98664d3 | 557 | complaint (_("Nested C_BINCL symbols")); |
c906108c SS |
558 | } |
559 | ++inclDepth; | |
560 | ||
561 | allocate_include_entry (); | |
562 | ||
c5aa993b JM |
563 | inclTable[inclIndx].name = cs->c_name; |
564 | inclTable[inclIndx].begin = cs->c_value; | |
c906108c SS |
565 | } |
566 | ||
567 | static void | |
fba45db2 | 568 | record_include_end (struct coff_symbol *cs) |
c906108c | 569 | { |
c5aa993b | 570 | InclTable *pTbl; |
c906108c SS |
571 | |
572 | if (inclDepth == 0) | |
573 | { | |
b98664d3 | 574 | complaint (_("Mismatched C_BINCL/C_EINCL pair")); |
c906108c SS |
575 | } |
576 | ||
577 | allocate_include_entry (); | |
578 | ||
c5aa993b | 579 | pTbl = &inclTable[inclIndx]; |
c906108c SS |
580 | pTbl->end = cs->c_value; |
581 | ||
582 | --inclDepth; | |
583 | ++inclIndx; | |
584 | } | |
585 | ||
586 | static void | |
fba45db2 | 587 | allocate_include_entry (void) |
c906108c SS |
588 | { |
589 | if (inclTable == NULL) | |
590 | { | |
8d749320 | 591 | inclTable = XCNEWVEC (InclTable, INITIAL_INCLUDE_TABLE_LENGTH); |
c906108c SS |
592 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; |
593 | inclIndx = 0; | |
594 | } | |
595 | else if (inclIndx >= inclLength) | |
596 | { | |
597 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
8d749320 | 598 | inclTable = XRESIZEVEC (InclTable, inclTable, inclLength); |
c5aa993b JM |
599 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, |
600 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
c906108c SS |
601 | } |
602 | } | |
603 | ||
604 | /* Global variable to pass the psymtab down to all the routines involved | |
605 | in psymtab to symtab processing. */ | |
606 | static struct partial_symtab *this_symtab_psymtab; | |
607 | ||
5c80ed9d TT |
608 | /* Objfile related to this_symtab_psymtab; set at the same time. */ |
609 | static struct objfile *this_symtab_objfile; | |
610 | ||
c906108c | 611 | /* given the start and end addresses of a compilation unit (or a csect, |
581e13c1 | 612 | at times) process its lines and create appropriate line vectors. */ |
c906108c SS |
613 | |
614 | static void | |
fba45db2 | 615 | process_linenos (CORE_ADDR start, CORE_ADDR end) |
c906108c SS |
616 | { |
617 | int offset, ii; | |
b8b98ad1 | 618 | file_ptr max_offset |
5c80ed9d | 619 | = XCOFF_DATA (this_symtab_objfile)->max_lineno_offset; |
c906108c SS |
620 | |
621 | /* subfile structure for the main compilation unit. */ | |
622 | struct subfile main_subfile; | |
623 | ||
624 | /* In the main source file, any time we see a function entry, we | |
625 | reset this variable to function's absolute starting line number. | |
626 | All the following line numbers in the function are relative to | |
627 | this, and we record absolute line numbers in record_line(). */ | |
628 | ||
629 | unsigned int main_source_baseline = 0; | |
630 | ||
631 | unsigned *firstLine; | |
632 | ||
633 | offset = | |
c5aa993b | 634 | ((struct symloc *) this_symtab_psymtab->read_symtab_private)->lineno_off; |
c906108c SS |
635 | if (offset == 0) |
636 | goto return_after_cleanup; | |
637 | ||
638 | memset (&main_subfile, '\0', sizeof (main_subfile)); | |
639 | ||
640 | if (inclIndx == 0) | |
581e13c1 MS |
641 | /* All source lines were in the main source file. None in include |
642 | files. */ | |
c906108c | 643 | |
c5aa993b JM |
644 | enter_line_range (&main_subfile, offset, 0, start, end, |
645 | &main_source_baseline); | |
c906108c SS |
646 | |
647 | else | |
648 | { | |
649 | /* There was source with line numbers in include files. */ | |
7a78ae4e ND |
650 | |
651 | int linesz = | |
5c80ed9d | 652 | coff_data (this_symtab_objfile->obfd)->local_linesz; |
c906108c | 653 | main_source_baseline = 0; |
7a78ae4e | 654 | |
c5aa993b | 655 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c SS |
656 | { |
657 | struct subfile *tmpSubfile; | |
658 | ||
659 | /* If there is main file source before include file, enter it. */ | |
660 | if (offset < inclTable[ii].begin) | |
661 | { | |
662 | enter_line_range | |
7a78ae4e | 663 | (&main_subfile, offset, inclTable[ii].begin - linesz, |
c906108c SS |
664 | start, 0, &main_source_baseline); |
665 | } | |
666 | ||
46212e0b | 667 | if (strcmp (inclTable[ii].name, get_last_source_file ()) == 0) |
c5933f6d JB |
668 | { |
669 | /* The entry in the include table refers to the main source | |
581e13c1 | 670 | file. Add the lines to the main subfile. */ |
c5933f6d JB |
671 | |
672 | main_source_baseline = inclTable[ii].funStartLine; | |
673 | enter_line_range | |
674 | (&main_subfile, inclTable[ii].begin, inclTable[ii].end, | |
675 | start, 0, &main_source_baseline); | |
676 | inclTable[ii].subfile = &main_subfile; | |
677 | } | |
678 | else | |
679 | { | |
c5933f6d | 680 | /* Have a new subfile for the include file. */ |
c906108c | 681 | |
8d749320 | 682 | tmpSubfile = inclTable[ii].subfile = XNEW (struct subfile); |
c906108c | 683 | |
c5933f6d JB |
684 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
685 | firstLine = &(inclTable[ii].funStartLine); | |
686 | ||
687 | /* Enter include file's lines now. */ | |
688 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
689 | inclTable[ii].end, start, 0, firstLine); | |
690 | } | |
c906108c SS |
691 | |
692 | if (offset <= inclTable[ii].end) | |
7a78ae4e | 693 | offset = inclTable[ii].end + linesz; |
c906108c SS |
694 | } |
695 | ||
696 | /* All the include files' line have been processed at this point. Now, | |
c5aa993b | 697 | enter remaining lines of the main file, if any left. */ |
7a78ae4e | 698 | if (offset < max_offset + 1 - linesz) |
c906108c | 699 | { |
c5aa993b | 700 | enter_line_range (&main_subfile, offset, 0, start, end, |
c906108c SS |
701 | &main_source_baseline); |
702 | } | |
703 | } | |
704 | ||
705 | /* Process main file's line numbers. */ | |
706 | if (main_subfile.line_vector) | |
707 | { | |
708 | struct linetable *lineTb, *lv; | |
709 | ||
710 | lv = main_subfile.line_vector; | |
711 | ||
581e13c1 MS |
712 | /* Line numbers are not necessarily ordered. xlc compilation will |
713 | put static function to the end. */ | |
c906108c | 714 | |
3c65e5b3 | 715 | struct subfile *current_subfile = get_current_subfile (); |
c906108c SS |
716 | lineTb = arrange_linetable (lv); |
717 | if (lv == lineTb) | |
718 | { | |
719 | current_subfile->line_vector = (struct linetable *) | |
720 | xrealloc (lv, (sizeof (struct linetable) | |
721 | + lv->nitems * sizeof (struct linetable_entry))); | |
722 | } | |
723 | else | |
724 | { | |
b8c9b27d | 725 | xfree (lv); |
c906108c SS |
726 | current_subfile->line_vector = lineTb; |
727 | } | |
728 | ||
c5aa993b | 729 | current_subfile->line_vector_length = |
c906108c SS |
730 | current_subfile->line_vector->nitems; |
731 | } | |
732 | ||
733 | /* Now, process included files' line numbers. */ | |
734 | ||
c5aa993b | 735 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c | 736 | { |
c5933f6d | 737 | if (inclTable[ii].subfile != ((struct subfile *) &main_subfile) |
3e43a32a MS |
738 | && (inclTable[ii].subfile)->line_vector) /* Useless if!!! |
739 | FIXMEmgo */ | |
c906108c SS |
740 | { |
741 | struct linetable *lineTb, *lv; | |
742 | ||
743 | lv = (inclTable[ii].subfile)->line_vector; | |
744 | ||
581e13c1 MS |
745 | /* Line numbers are not necessarily ordered. xlc compilation will |
746 | put static function to the end. */ | |
c906108c SS |
747 | |
748 | lineTb = arrange_linetable (lv); | |
749 | ||
750 | push_subfile (); | |
751 | ||
752 | /* For the same include file, we might want to have more than one | |
753 | subfile. This happens if we have something like: | |
754 | ||
c5aa993b JM |
755 | ...... |
756 | #include "foo.h" | |
757 | ...... | |
758 | #include "foo.h" | |
759 | ...... | |
c906108c | 760 | |
581e13c1 | 761 | while foo.h including code in it. (stupid but possible) |
c906108c SS |
762 | Since start_subfile() looks at the name and uses an |
763 | existing one if finds, we need to provide a fake name and | |
764 | fool it. */ | |
765 | ||
766 | #if 0 | |
4d663531 | 767 | start_subfile (inclTable[ii].name); |
c906108c SS |
768 | #else |
769 | { | |
770 | /* Pick a fake name that will produce the same results as this | |
771 | one when passed to deduce_language_from_filename. Kludge on | |
772 | top of kludge. */ | |
a121b7c1 | 773 | const char *fakename = strrchr (inclTable[ii].name, '.'); |
a109c7c1 | 774 | |
c906108c SS |
775 | if (fakename == NULL) |
776 | fakename = " ?"; | |
4d663531 | 777 | start_subfile (fakename); |
3c65e5b3 | 778 | xfree (get_current_subfile ()->name); |
c906108c | 779 | } |
3c65e5b3 | 780 | struct subfile *current_subfile = get_current_subfile (); |
c2d11a7d | 781 | current_subfile->name = xstrdup (inclTable[ii].name); |
c906108c SS |
782 | #endif |
783 | ||
784 | if (lv == lineTb) | |
785 | { | |
786 | current_subfile->line_vector = | |
787 | (struct linetable *) xrealloc | |
c5aa993b JM |
788 | (lv, (sizeof (struct linetable) |
789 | + lv->nitems * sizeof (struct linetable_entry))); | |
c906108c SS |
790 | |
791 | } | |
792 | else | |
793 | { | |
b8c9b27d | 794 | xfree (lv); |
c906108c SS |
795 | current_subfile->line_vector = lineTb; |
796 | } | |
797 | ||
c5aa993b | 798 | current_subfile->line_vector_length = |
c906108c | 799 | current_subfile->line_vector->nitems; |
4d663531 | 800 | start_subfile (pop_subfile ()); |
c906108c SS |
801 | } |
802 | } | |
803 | ||
c5aa993b | 804 | return_after_cleanup: |
c906108c SS |
805 | |
806 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
807 | inclIndx = 0; | |
c906108c SS |
808 | } |
809 | ||
c295b2e5 | 810 | static void |
f56ce883 | 811 | aix_process_linenos (struct objfile *objfile) |
c906108c | 812 | { |
316a8b21 TG |
813 | /* There is no linenos to read if there are only dwarf info. */ |
814 | if (this_symtab_psymtab == NULL) | |
815 | return; | |
816 | ||
581e13c1 | 817 | /* Process line numbers and enter them into line vector. */ |
2c99ee5c | 818 | process_linenos (get_last_source_start_addr (), cur_src_end_addr); |
c906108c SS |
819 | } |
820 | ||
821 | ||
822 | /* Enter a given range of lines into the line vector. | |
823 | can be called in the following two ways: | |
3e43a32a MS |
824 | enter_line_range (subfile, beginoffset, endoffset, |
825 | startaddr, 0, firstLine) or | |
826 | enter_line_range (subfile, beginoffset, 0, | |
827 | startaddr, endaddr, firstLine) | |
c906108c SS |
828 | |
829 | endoffset points to the last line table entry that we should pay | |
830 | attention to. */ | |
831 | ||
832 | static void | |
3e43a32a MS |
833 | enter_line_range (struct subfile *subfile, unsigned beginoffset, |
834 | unsigned endoffset, /* offsets to line table */ | |
fba45db2 KB |
835 | CORE_ADDR startaddr, /* offsets to line table */ |
836 | CORE_ADDR endaddr, unsigned *firstLine) | |
c906108c | 837 | { |
5c80ed9d | 838 | struct objfile *objfile = this_symtab_objfile; |
fbf65064 | 839 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
840 | unsigned int curoffset; |
841 | CORE_ADDR addr; | |
7a78ae4e | 842 | void *ext_lnno; |
c906108c SS |
843 | struct internal_lineno int_lnno; |
844 | unsigned int limit_offset; | |
845 | bfd *abfd; | |
7a78ae4e | 846 | int linesz; |
c906108c SS |
847 | |
848 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) | |
849 | return; | |
850 | curoffset = beginoffset; | |
b8b98ad1 | 851 | limit_offset = XCOFF_DATA (objfile)->max_lineno_offset; |
c906108c SS |
852 | |
853 | if (endoffset != 0) | |
854 | { | |
855 | if (endoffset >= limit_offset) | |
856 | { | |
b98664d3 | 857 | complaint (_("Bad line table offset in C_EINCL directive")); |
c906108c SS |
858 | return; |
859 | } | |
860 | limit_offset = endoffset; | |
861 | } | |
862 | else | |
863 | limit_offset -= 1; | |
7a78ae4e | 864 | |
fbf65064 | 865 | abfd = objfile->obfd; |
7a78ae4e ND |
866 | linesz = coff_data (abfd)->local_linesz; |
867 | ext_lnno = alloca (linesz); | |
c906108c SS |
868 | |
869 | while (curoffset <= limit_offset) | |
870 | { | |
871 | bfd_seek (abfd, curoffset, SEEK_SET); | |
3a42e9d0 | 872 | bfd_bread (ext_lnno, linesz, abfd); |
7a78ae4e | 873 | bfd_coff_swap_lineno_in (abfd, ext_lnno, &int_lnno); |
c906108c SS |
874 | |
875 | /* Find the address this line represents. */ | |
876 | addr = (int_lnno.l_lnno | |
877 | ? int_lnno.l_addr.l_paddr | |
878 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
fbf65064 | 879 | addr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
880 | |
881 | if (addr < startaddr || (endaddr && addr >= endaddr)) | |
882 | return; | |
883 | ||
884 | if (int_lnno.l_lnno == 0) | |
885 | { | |
886 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
fbf65064 | 887 | record_line (subfile, 0, gdbarch_addr_bits_remove (gdbarch, addr)); |
c906108c SS |
888 | --(*firstLine); |
889 | } | |
890 | else | |
fbf65064 UW |
891 | record_line (subfile, *firstLine + int_lnno.l_lnno, |
892 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
7a78ae4e | 893 | curoffset += linesz; |
c906108c SS |
894 | } |
895 | } | |
896 | ||
897 | ||
898 | /* Save the vital information for use when closing off the current file. | |
899 | NAME is the file name the symbols came from, START_ADDR is the first | |
900 | text address for the file, and SIZE is the number of bytes of text. */ | |
901 | ||
902 | #define complete_symtab(name, start_addr) { \ | |
46212e0b | 903 | set_last_source_file (name); \ |
2c99ee5c | 904 | set_last_source_start_addr (start_addr); \ |
c906108c SS |
905 | } |
906 | ||
907 | ||
908 | /* Refill the symbol table input buffer | |
909 | and set the variables that control fetching entries from it. | |
910 | Reports an error if no data available. | |
911 | This function can read past the end of the symbol table | |
912 | (into the string table) but this does no harm. */ | |
913 | ||
8dddcb8f | 914 | /* Create a new minimal symbol (using record_with_info). |
ec92004f | 915 | |
4d1eb6b4 | 916 | Creation of all new minimal symbols should go through this function |
8dddcb8f | 917 | rather than calling the various record functions in order |
4d1eb6b4 JB |
918 | to make sure that all symbol addresses get properly relocated. |
919 | ||
ec92004f JB |
920 | Arguments are: |
921 | ||
922 | NAME - the symbol's name (but if NAME starts with a period, that | |
923 | leading period is discarded). | |
4d1eb6b4 JB |
924 | ADDRESS - the symbol's address, prior to relocation. This function |
925 | relocates the address before recording the minimal symbol. | |
ec92004f JB |
926 | MS_TYPE - the symbol's type. |
927 | N_SCNUM - the symbol's XCOFF section number. | |
928 | OBJFILE - the objfile associated with the minimal symbol. */ | |
c906108c | 929 | |
ec92004f | 930 | static void |
8dddcb8f TT |
931 | record_minimal_symbol (minimal_symbol_reader &reader, |
932 | const char *name, CORE_ADDR address, | |
ec92004f JB |
933 | enum minimal_symbol_type ms_type, |
934 | int n_scnum, | |
935 | struct objfile *objfile) | |
936 | { | |
ec92004f JB |
937 | if (name[0] == '.') |
938 | ++name; | |
939 | ||
8dddcb8f TT |
940 | reader.record_with_info (name, address, ms_type, |
941 | secnum_to_section (n_scnum, objfile)); | |
ec92004f | 942 | } |
c906108c | 943 | |
581e13c1 MS |
944 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
945 | nested. At any given time, a symbol can only be in one static block. | |
946 | This is the base address of current static block, zero if non exists. */ | |
c5aa993b | 947 | |
c906108c SS |
948 | static int static_block_base = 0; |
949 | ||
950 | /* Section number for the current static block. */ | |
951 | ||
952 | static int static_block_section = -1; | |
953 | ||
581e13c1 | 954 | /* true if space for symbol name has been allocated. */ |
c906108c SS |
955 | |
956 | static int symname_alloced = 0; | |
957 | ||
958 | /* Next symbol to read. Pointer into raw seething symbol table. */ | |
959 | ||
960 | static char *raw_symbol; | |
961 | ||
962 | /* This is the function which stabsread.c calls to get symbol | |
963 | continuations. */ | |
964 | ||
a121b7c1 | 965 | static const char * |
fba45db2 | 966 | xcoff_next_symbol_text (struct objfile *objfile) |
c906108c SS |
967 | { |
968 | struct internal_syment symbol; | |
a121b7c1 | 969 | const char *retval; |
a109c7c1 | 970 | |
581e13c1 | 971 | /* FIXME: is this the same as the passed arg? */ |
5c80ed9d TT |
972 | if (this_symtab_objfile) |
973 | objfile = this_symtab_objfile; | |
c906108c SS |
974 | |
975 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); | |
976 | if (symbol.n_zeroes) | |
977 | { | |
b98664d3 | 978 | complaint (_("Unexpected symbol continuation")); |
c906108c SS |
979 | |
980 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 981 | code does something reasonable. */ |
c906108c SS |
982 | retval = ""; |
983 | } | |
984 | else if (symbol.n_sclass & 0x80) | |
985 | { | |
b8b98ad1 | 986 | retval = XCOFF_DATA (objfile)->debugsec + symbol.n_offset; |
3e43a32a | 987 | raw_symbol += coff_data (objfile->obfd)->local_symesz; |
c906108c SS |
988 | ++symnum; |
989 | } | |
990 | else | |
991 | { | |
b98664d3 | 992 | complaint (_("Unexpected symbol continuation")); |
c906108c SS |
993 | |
994 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 995 | code does something reasonable. */ |
c906108c SS |
996 | retval = ""; |
997 | } | |
998 | return retval; | |
999 | } | |
1000 | ||
1001 | /* Read symbols for a given partial symbol table. */ | |
1002 | ||
1003 | static void | |
5c80ed9d | 1004 | read_xcoff_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 1005 | { |
c906108c | 1006 | bfd *abfd = objfile->obfd; |
581e13c1 | 1007 | char *raw_auxptr; /* Pointer to first raw aux entry for sym. */ |
02dc647e | 1008 | struct xcoff_symfile_info *xcoff = XCOFF_DATA (objfile); |
b8b98ad1 TT |
1009 | char *strtbl = xcoff->strtbl; |
1010 | char *debugsec = xcoff->debugsec; | |
554d387d | 1011 | const char *debugfmt = bfd_xcoff_is_xcoff64 (abfd) ? "XCOFF64" : "XCOFF"; |
c906108c SS |
1012 | |
1013 | struct internal_syment symbol[1]; | |
1014 | union internal_auxent main_aux; | |
1015 | struct coff_symbol cs[1]; | |
1016 | CORE_ADDR file_start_addr = 0; | |
1017 | CORE_ADDR file_end_addr = 0; | |
1018 | ||
1019 | int next_file_symnum = -1; | |
1020 | unsigned int max_symnum; | |
1021 | int just_started = 1; | |
1022 | int depth = 0; | |
086850b2 | 1023 | CORE_ADDR fcn_start_addr = 0; |
b9718991 | 1024 | enum language pst_symtab_language; |
c906108c | 1025 | |
238ae9af | 1026 | struct coff_symbol fcn_stab_saved = { 0 }; |
c906108c | 1027 | |
581e13c1 | 1028 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
3672b1be | 1029 | union internal_auxent fcn_aux_saved = main_aux; |
fe978cb0 | 1030 | struct context_stack *newobj; |
c906108c | 1031 | |
9a1e3f00 | 1032 | const char *filestring = pst->filename; /* Name of the current file. */ |
c906108c | 1033 | |
40301fb7 | 1034 | const char *last_csect_name; /* Last seen csect's name. */ |
c906108c SS |
1035 | |
1036 | this_symtab_psymtab = pst; | |
5c80ed9d | 1037 | this_symtab_objfile = objfile; |
c906108c SS |
1038 | |
1039 | /* Get the appropriate COFF "constants" related to the file we're | |
581e13c1 | 1040 | handling. */ |
c906108c SS |
1041 | local_symesz = coff_data (abfd)->local_symesz; |
1042 | ||
46212e0b | 1043 | set_last_source_file (NULL); |
c906108c | 1044 | last_csect_name = 0; |
b9718991 | 1045 | pst_symtab_language = deduce_language_from_filename (filestring); |
c906108c SS |
1046 | |
1047 | start_stabs (); | |
cafb3438 | 1048 | start_symtab (objfile, filestring, NULL, file_start_addr, |
b9718991 | 1049 | pst_symtab_language); |
7a78ae4e | 1050 | record_debugformat (debugfmt); |
c5aa993b | 1051 | symnum = ((struct symloc *) pst->read_symtab_private)->first_symnum; |
c906108c | 1052 | max_symnum = |
c5aa993b | 1053 | symnum + ((struct symloc *) pst->read_symtab_private)->numsyms; |
c906108c SS |
1054 | first_object_file_end = 0; |
1055 | ||
b8b98ad1 | 1056 | raw_symbol = xcoff->symtbl + symnum * local_symesz; |
c906108c SS |
1057 | |
1058 | while (symnum < max_symnum) | |
1059 | { | |
c906108c SS |
1060 | QUIT; /* make this command interruptable. */ |
1061 | ||
1062 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
581e13c1 | 1063 | /* read one symbol into `cs' structure. After processing the |
c5aa993b | 1064 | whole symbol table, only string table will be kept in memory, |
581e13c1 | 1065 | symbol table and debug section of xcoff will be freed. Thus |
c5aa993b | 1066 | we can mark symbols with names in string table as |
581e13c1 | 1067 | `alloced'. */ |
c906108c SS |
1068 | { |
1069 | int ii; | |
1070 | ||
1071 | /* Swap and align the symbol into a reasonable C structure. */ | |
1072 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1073 | ||
1074 | cs->c_symnum = symnum; | |
1075 | cs->c_naux = symbol->n_numaux; | |
1076 | if (symbol->n_zeroes) | |
1077 | { | |
1078 | symname_alloced = 0; | |
1079 | /* We must use the original, unswapped, name here so the name field | |
1080 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1081 | we use the new field, it gets overwritten for each symbol. */ | |
c5aa993b | 1082 | cs->c_name = ((struct external_syment *) raw_symbol)->e.e_name; |
c906108c SS |
1083 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1084 | '\0'-terminated. */ | |
1085 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1086 | { | |
1087 | char *p; | |
a109c7c1 | 1088 | |
224c3ddb SM |
1089 | p = (char *) obstack_alloc (&objfile->objfile_obstack, |
1090 | E_SYMNMLEN + 1); | |
c906108c SS |
1091 | strncpy (p, cs->c_name, E_SYMNMLEN); |
1092 | p[E_SYMNMLEN] = '\0'; | |
1093 | cs->c_name = p; | |
1094 | symname_alloced = 1; | |
1095 | } | |
1096 | } | |
1097 | else if (symbol->n_sclass & 0x80) | |
1098 | { | |
1099 | cs->c_name = debugsec + symbol->n_offset; | |
1100 | symname_alloced = 0; | |
1101 | } | |
1102 | else | |
1103 | { | |
1104 | /* in string table */ | |
c5aa993b | 1105 | cs->c_name = strtbl + (int) symbol->n_offset; |
c906108c SS |
1106 | symname_alloced = 1; |
1107 | } | |
1108 | cs->c_value = symbol->n_value; | |
1109 | cs->c_sclass = symbol->n_sclass; | |
1110 | cs->c_secnum = symbol->n_scnum; | |
c5aa993b | 1111 | cs->c_type = (unsigned) symbol->n_type; |
c906108c | 1112 | |
7a78ae4e | 1113 | raw_symbol += local_symesz; |
c906108c SS |
1114 | ++symnum; |
1115 | ||
1116 | /* Save addr of first aux entry. */ | |
1117 | raw_auxptr = raw_symbol; | |
1118 | ||
1119 | /* Skip all the auxents associated with this symbol. */ | |
1120 | for (ii = symbol->n_numaux; ii; --ii) | |
1121 | { | |
1122 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1123 | ++symnum; | |
1124 | } | |
1125 | } | |
1126 | ||
581e13c1 | 1127 | /* if symbol name starts with ".$" or "$", ignore it. */ |
c906108c SS |
1128 | if (cs->c_name[0] == '$' |
1129 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1130 | continue; | |
1131 | ||
1132 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
1133 | { | |
46212e0b | 1134 | if (get_last_source_file ()) |
c906108c | 1135 | { |
43f3e411 DE |
1136 | pst->compunit_symtab = end_symtab (cur_src_end_addr, |
1137 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1138 | end_stabs (); |
1139 | } | |
1140 | ||
1141 | start_stabs (); | |
cafb3438 TT |
1142 | start_symtab (objfile, "_globals_", NULL, |
1143 | 0, pst_symtab_language); | |
7a78ae4e | 1144 | record_debugformat (debugfmt); |
c906108c | 1145 | cur_src_end_addr = first_object_file_end; |
581e13c1 | 1146 | /* Done with all files, everything from here on is globals. */ |
c906108c SS |
1147 | } |
1148 | ||
55bcecda UW |
1149 | if (cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT || |
1150 | cs->c_sclass == C_WEAKEXT) | |
c906108c SS |
1151 | { |
1152 | /* Dealing with a symbol with a csect entry. */ | |
1153 | ||
1154 | #define CSECT(PP) ((PP)->x_csect) | |
1155 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1156 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1157 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1158 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1159 | ||
55bcecda UW |
1160 | /* Convert the auxent to something we can access. |
1161 | XCOFF can have more than one auxiliary entries. | |
1162 | ||
1163 | Actual functions will have two auxiliary entries, one to have the | |
1164 | function size and other to have the smtype/smclass (LD/PR). | |
1165 | ||
1166 | c_type value of main symbol table will be set only in case of | |
1167 | C_EXT/C_HIDEEXT/C_WEAKEXT storage class symbols. | |
1168 | Bit 10 of type is set if symbol is a function, ie the value is set | |
1169 | to 32(0x20). So we need to read the first function auxiliay entry | |
1170 | which contains the size. */ | |
1171 | if (cs->c_naux > 1 && ISFCN (cs->c_type)) | |
1172 | { | |
1173 | /* a function entry point. */ | |
1174 | ||
1175 | fcn_start_addr = cs->c_value; | |
1176 | ||
1177 | /* save the function header info, which will be used | |
1178 | when `.bf' is seen. */ | |
1179 | fcn_cs_saved = *cs; | |
1180 | ||
1181 | /* Convert the auxent to something we can access. */ | |
1182 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1183 | 0, cs->c_naux, &fcn_aux_saved); | |
1184 | continue; | |
1185 | } | |
1186 | /* Read the csect auxiliary header, which is always the last by | |
1187 | onvention. */ | |
1188 | bfd_coff_swap_aux_in (abfd, | |
1189 | raw_auxptr | |
1190 | + ((coff_data (abfd)->local_symesz) | |
1191 | * (cs->c_naux - 1)), | |
1192 | cs->c_type, cs->c_sclass, | |
1193 | cs->c_naux - 1, cs->c_naux, | |
1194 | &main_aux); | |
c906108c SS |
1195 | |
1196 | switch (CSECT_SMTYP (&main_aux)) | |
1197 | { | |
1198 | ||
1199 | case XTY_ER: | |
1200 | /* Ignore all external references. */ | |
1201 | continue; | |
1202 | ||
1203 | case XTY_SD: | |
1204 | /* A section description. */ | |
1205 | { | |
1206 | switch (CSECT_SCLAS (&main_aux)) | |
1207 | { | |
1208 | ||
1209 | case XMC_PR: | |
1210 | { | |
1211 | ||
1212 | /* A program csect is seen. We have to allocate one | |
c5aa993b JM |
1213 | symbol table for each program csect. Normally gdb |
1214 | prefers one symtab for each source file. In case | |
1215 | of AIX, one source file might include more than one | |
1216 | [PR] csect, and they don't have to be adjacent in | |
581e13c1 | 1217 | terms of the space they occupy in memory. Thus, one |
c5aa993b JM |
1218 | single source file might get fragmented in the |
1219 | memory and gdb's file start and end address | |
1220 | approach does not work! GCC (and I think xlc) seem | |
1221 | to put all the code in the unnamed program csect. */ | |
c906108c SS |
1222 | |
1223 | if (last_csect_name) | |
1224 | { | |
1225 | complete_symtab (filestring, file_start_addr); | |
1226 | cur_src_end_addr = file_end_addr; | |
43f3e411 | 1227 | end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1228 | end_stabs (); |
1229 | start_stabs (); | |
1230 | /* Give all csects for this source file the same | |
1231 | name. */ | |
4d663531 | 1232 | start_symtab (objfile, filestring, NULL, |
cafb3438 | 1233 | 0, pst_symtab_language); |
7a78ae4e | 1234 | record_debugformat (debugfmt); |
c906108c SS |
1235 | } |
1236 | ||
1237 | /* If this is the very first csect seen, | |
581e13c1 | 1238 | basically `__start'. */ |
c906108c SS |
1239 | if (just_started) |
1240 | { | |
1241 | first_object_file_end | |
1242 | = cs->c_value + CSECT_LEN (&main_aux); | |
1243 | just_started = 0; | |
1244 | } | |
1245 | ||
1246 | file_start_addr = | |
1247 | cs->c_value + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1248 | SECT_OFF_TEXT (objfile)); |
c906108c SS |
1249 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); |
1250 | ||
40301fb7 JB |
1251 | if (cs->c_name && (cs->c_name[0] == '.' || cs->c_name[0] == '@')) |
1252 | last_csect_name = cs->c_name; | |
c906108c SS |
1253 | } |
1254 | continue; | |
1255 | ||
1256 | /* All other symbols are put into the minimal symbol | |
1257 | table only. */ | |
1258 | ||
1259 | case XMC_RW: | |
1260 | continue; | |
1261 | ||
1262 | case XMC_TC0: | |
1263 | continue; | |
1264 | ||
1265 | case XMC_TC: | |
1266 | continue; | |
1267 | ||
1268 | default: | |
1269 | /* Ignore the symbol. */ | |
1270 | continue; | |
1271 | } | |
1272 | } | |
1273 | break; | |
1274 | ||
1275 | case XTY_LD: | |
1276 | ||
1277 | switch (CSECT_SCLAS (&main_aux)) | |
1278 | { | |
55bcecda UW |
1279 | /* We never really come to this part as this case has been |
1280 | handled in ISFCN check above. | |
1281 | This and other cases of XTY_LD are kept just for | |
1282 | reference. */ | |
c906108c | 1283 | case XMC_PR: |
c906108c SS |
1284 | continue; |
1285 | ||
1286 | case XMC_GL: | |
581e13c1 | 1287 | /* shared library function trampoline code entry point. */ |
c906108c SS |
1288 | continue; |
1289 | ||
1290 | case XMC_DS: | |
1291 | /* The symbols often have the same names as debug symbols for | |
1292 | functions, and confuse lookup_symbol. */ | |
1293 | continue; | |
1294 | ||
1295 | default: | |
1296 | /* xlc puts each variable in a separate csect, so we get | |
1297 | an XTY_SD for each variable. But gcc puts several | |
1298 | variables in a csect, so that each variable only gets | |
581e13c1 | 1299 | an XTY_LD. This will typically be XMC_RW; I suspect |
c906108c SS |
1300 | XMC_RO and XMC_BS might be possible too. |
1301 | These variables are put in the minimal symbol table | |
1302 | only. */ | |
1303 | continue; | |
1304 | } | |
1305 | break; | |
1306 | ||
1307 | case XTY_CM: | |
1308 | /* Common symbols are put into the minimal symbol table only. */ | |
1309 | continue; | |
1310 | ||
1311 | default: | |
1312 | break; | |
1313 | } | |
1314 | } | |
1315 | ||
1316 | switch (cs->c_sclass) | |
1317 | { | |
c906108c SS |
1318 | case C_FILE: |
1319 | ||
1320 | /* c_value field contains symnum of next .file entry in table | |
581e13c1 | 1321 | or symnum of first global after last .file. */ |
c906108c SS |
1322 | |
1323 | next_file_symnum = cs->c_value; | |
1324 | ||
1325 | /* Complete symbol table for last object file containing | |
581e13c1 | 1326 | debugging information. */ |
c906108c SS |
1327 | |
1328 | /* Whether or not there was a csect in the previous file, we | |
1329 | have to call `end_stabs' and `start_stabs' to reset | |
1330 | type_vector, line_vector, etc. structures. */ | |
1331 | ||
1332 | complete_symtab (filestring, file_start_addr); | |
1333 | cur_src_end_addr = file_end_addr; | |
4d663531 | 1334 | end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1335 | end_stabs (); |
1336 | ||
3e43a32a MS |
1337 | /* XCOFF, according to the AIX 3.2 documentation, puts the |
1338 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
1339 | do things the standard COFF way and put it in the auxent. | |
1340 | We use the auxent if the symbol is ".file" and an auxent | |
1341 | exists, otherwise use the symbol itself. Simple | |
1342 | enough. */ | |
c906108c SS |
1343 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) |
1344 | { | |
1345 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1346 | 0, cs->c_naux, &main_aux); | |
1347 | filestring = coff_getfilename (&main_aux, objfile); | |
1348 | } | |
1349 | else | |
1350 | filestring = cs->c_name; | |
1351 | ||
1352 | start_stabs (); | |
cafb3438 | 1353 | start_symtab (objfile, filestring, NULL, 0, pst_symtab_language); |
7a78ae4e | 1354 | record_debugformat (debugfmt); |
c906108c SS |
1355 | last_csect_name = 0; |
1356 | ||
581e13c1 | 1357 | /* reset file start and end addresses. A compilation unit |
3e43a32a | 1358 | with no text (only data) should have zero file |
581e13c1 | 1359 | boundaries. */ |
c906108c SS |
1360 | file_start_addr = file_end_addr = 0; |
1361 | break; | |
1362 | ||
1363 | case C_FUN: | |
1364 | fcn_stab_saved = *cs; | |
1365 | break; | |
1366 | ||
1367 | case C_FCN: | |
7ecb6532 | 1368 | if (strcmp (cs->c_name, ".bf") == 0) |
c906108c SS |
1369 | { |
1370 | CORE_ADDR off = ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1371 | SECT_OFF_TEXT (objfile)); |
a109c7c1 | 1372 | |
c906108c SS |
1373 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1374 | 0, cs->c_naux, &main_aux); | |
1375 | ||
1376 | within_function = 1; | |
1377 | ||
fe978cb0 | 1378 | newobj = push_context (0, fcn_start_addr + off); |
c906108c | 1379 | |
fe978cb0 | 1380 | newobj->name = define_symbol |
c906108c SS |
1381 | (fcn_cs_saved.c_value + off, |
1382 | fcn_stab_saved.c_name, 0, 0, objfile); | |
fe978cb0 PA |
1383 | if (newobj->name != NULL) |
1384 | SYMBOL_SECTION (newobj->name) = SECT_OFF_TEXT (objfile); | |
c906108c | 1385 | } |
7ecb6532 | 1386 | else if (strcmp (cs->c_name, ".ef") == 0) |
c906108c | 1387 | { |
c906108c SS |
1388 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1389 | 0, cs->c_naux, &main_aux); | |
1390 | ||
1391 | /* The value of .ef is the address of epilogue code; | |
c5aa993b | 1392 | not useful for gdb. */ |
c906108c | 1393 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
c5aa993b | 1394 | contains number of lines to '}' */ |
c906108c | 1395 | |
edb0470b | 1396 | if (outermost_context_p ()) |
581e13c1 | 1397 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1398 | ef_complaint (cs->c_symnum); |
c906108c SS |
1399 | within_function = 0; |
1400 | break; | |
1401 | } | |
a60f3166 | 1402 | struct context_stack cstk = pop_context (); |
c906108c | 1403 | /* Stack must be empty now. */ |
a60f3166 | 1404 | if (!outermost_context_p ()) |
c906108c | 1405 | { |
23136709 | 1406 | ef_complaint (cs->c_symnum); |
c906108c SS |
1407 | within_function = 0; |
1408 | break; | |
1409 | } | |
1410 | ||
c233e9c6 | 1411 | finish_block (cstk.name, cstk.old_blocks, |
a60f3166 | 1412 | NULL, cstk.start_addr, |
c906108c SS |
1413 | (fcn_cs_saved.c_value |
1414 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1415 | + ANOFFSET (objfile->section_offsets, | |
4d663531 | 1416 | SECT_OFF_TEXT (objfile)))); |
c906108c SS |
1417 | within_function = 0; |
1418 | } | |
1419 | break; | |
1420 | ||
1421 | case C_BSTAT: | |
1422 | /* Begin static block. */ | |
1423 | { | |
b926417a | 1424 | struct internal_syment static_symbol; |
c906108c | 1425 | |
b926417a TT |
1426 | read_symbol (&static_symbol, cs->c_value); |
1427 | static_block_base = static_symbol.n_value; | |
c906108c | 1428 | static_block_section = |
b926417a | 1429 | secnum_to_section (static_symbol.n_scnum, objfile); |
c906108c SS |
1430 | } |
1431 | break; | |
1432 | ||
1433 | case C_ESTAT: | |
1434 | /* End of static block. */ | |
1435 | static_block_base = 0; | |
1436 | static_block_section = -1; | |
1437 | break; | |
1438 | ||
1439 | case C_ARG: | |
1440 | case C_REGPARM: | |
1441 | case C_REG: | |
1442 | case C_TPDEF: | |
1443 | case C_STRTAG: | |
1444 | case C_UNTAG: | |
1445 | case C_ENTAG: | |
1446 | { | |
b98664d3 | 1447 | complaint (_("Unrecognized storage class %d."), |
23136709 | 1448 | cs->c_sclass); |
c906108c SS |
1449 | } |
1450 | break; | |
1451 | ||
1452 | case C_LABEL: | |
1453 | case C_NULL: | |
1454 | /* Ignore these. */ | |
1455 | break; | |
1456 | ||
1457 | case C_HIDEXT: | |
1458 | case C_STAT: | |
1459 | break; | |
1460 | ||
1461 | case C_BINCL: | |
1462 | /* beginning of include file */ | |
1463 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
581e13c1 MS |
1464 | order. Thus, when wee see them, we might not know enough info |
1465 | to process them. Thus, we'll be saving them into a table | |
1466 | (inclTable) and postpone their processing. */ | |
c906108c SS |
1467 | |
1468 | record_include_begin (cs); | |
1469 | break; | |
1470 | ||
1471 | case C_EINCL: | |
1472 | /* End of include file. */ | |
1473 | /* See the comment after case C_BINCL. */ | |
1474 | record_include_end (cs); | |
1475 | break; | |
1476 | ||
1477 | case C_BLOCK: | |
7ecb6532 | 1478 | if (strcmp (cs->c_name, ".bb") == 0) |
c906108c SS |
1479 | { |
1480 | depth++; | |
fe978cb0 | 1481 | newobj = push_context (depth, |
c906108c SS |
1482 | (cs->c_value |
1483 | + ANOFFSET (objfile->section_offsets, | |
b8fbeb18 | 1484 | SECT_OFF_TEXT (objfile)))); |
c906108c | 1485 | } |
7ecb6532 | 1486 | else if (strcmp (cs->c_name, ".eb") == 0) |
c906108c | 1487 | { |
edb0470b | 1488 | if (outermost_context_p ()) |
581e13c1 | 1489 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1490 | eb_complaint (cs->c_symnum); |
c906108c SS |
1491 | break; |
1492 | } | |
a60f3166 TT |
1493 | struct context_stack cstk = pop_context (); |
1494 | if (depth-- != cstk.depth) | |
c906108c | 1495 | { |
23136709 | 1496 | eb_complaint (cs->c_symnum); |
c906108c SS |
1497 | break; |
1498 | } | |
e148f09d | 1499 | if (*get_local_symbols () && !outermost_context_p ()) |
c906108c SS |
1500 | { |
1501 | /* Make a block for the local symbols within. */ | |
c233e9c6 | 1502 | finish_block (cstk.name, |
a60f3166 TT |
1503 | cstk.old_blocks, NULL, |
1504 | cstk.start_addr, | |
c906108c SS |
1505 | (cs->c_value |
1506 | + ANOFFSET (objfile->section_offsets, | |
4d663531 | 1507 | SECT_OFF_TEXT (objfile)))); |
c906108c | 1508 | } |
e148f09d | 1509 | *get_local_symbols () = cstk.locals; |
c906108c SS |
1510 | } |
1511 | break; | |
1512 | ||
1513 | default: | |
1514 | process_xcoff_symbol (cs, objfile); | |
1515 | break; | |
1516 | } | |
1517 | } | |
1518 | ||
46212e0b | 1519 | if (get_last_source_file ()) |
c906108c | 1520 | { |
43f3e411 | 1521 | struct compunit_symtab *cust; |
c906108c SS |
1522 | |
1523 | complete_symtab (filestring, file_start_addr); | |
1524 | cur_src_end_addr = file_end_addr; | |
43f3e411 | 1525 | cust = end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c | 1526 | /* When reading symbols for the last C_FILE of the objfile, try |
43f3e411 | 1527 | to make sure that we set pst->compunit_symtab to the symtab for the |
c906108c SS |
1528 | file, not to the _globals_ symtab. I'm not sure whether this |
1529 | actually works right or when/if it comes up. */ | |
43f3e411 DE |
1530 | if (pst->compunit_symtab == NULL) |
1531 | pst->compunit_symtab = cust; | |
c906108c SS |
1532 | end_stabs (); |
1533 | } | |
1534 | } | |
1535 | ||
1536 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
8d749320 | 1537 | (SYMBOL2) = XOBNEW (&objfile->objfile_obstack, struct symbol); \ |
c906108c | 1538 | *(SYMBOL2) = *(SYMBOL1); |
c5aa993b JM |
1539 | |
1540 | ||
c906108c | 1541 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ |
10f0c4bb TT |
1542 | ((ALLOCED) ? (NAME) : obstack_copy0 (&objfile->objfile_obstack, \ |
1543 | (NAME), strlen (NAME))) | |
c906108c SS |
1544 | |
1545 | ||
581e13c1 | 1546 | /* process one xcoff symbol. */ |
c906108c SS |
1547 | |
1548 | static struct symbol * | |
aa1ee363 | 1549 | process_xcoff_symbol (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
1550 | { |
1551 | struct symbol onesymbol; | |
52f0bd74 | 1552 | struct symbol *sym = &onesymbol; |
c906108c SS |
1553 | struct symbol *sym2 = NULL; |
1554 | char *name, *pp; | |
1555 | ||
1556 | int sec; | |
1557 | CORE_ADDR off; | |
1558 | ||
1559 | if (cs->c_secnum < 0) | |
1560 | { | |
1561 | /* The value is a register number, offset within a frame, etc., | |
c5aa993b | 1562 | and does not get relocated. */ |
c906108c SS |
1563 | off = 0; |
1564 | sec = -1; | |
1565 | } | |
1566 | else | |
1567 | { | |
1568 | sec = secnum_to_section (cs->c_secnum, objfile); | |
1569 | off = ANOFFSET (objfile->section_offsets, sec); | |
1570 | } | |
1571 | ||
1572 | name = cs->c_name; | |
1573 | if (name[0] == '.') | |
1574 | ++name; | |
1575 | ||
38bf1463 | 1576 | initialize_objfile_symbol (sym); |
c906108c SS |
1577 | |
1578 | /* default assumptions */ | |
7a78ae4e | 1579 | SYMBOL_VALUE_ADDRESS (sym) = cs->c_value + off; |
176620f1 | 1580 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1581 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); |
1582 | ||
1583 | if (ISFCN (cs->c_type)) | |
1584 | { | |
1585 | /* At this point, we don't know the type of the function. This | |
c5aa993b JM |
1586 | will be patched with the type from its stab entry later on in |
1587 | patch_block_stabs (), unless the file was compiled without -g. */ | |
c906108c | 1588 | |
224c3ddb SM |
1589 | SYMBOL_SET_LINKAGE_NAME (sym, ((const char *) |
1590 | SYMNAME_ALLOC (name, symname_alloced))); | |
46bf5051 | 1591 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_text_symbol; |
c906108c | 1592 | |
f1e6e072 | 1593 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1594 | SYMBOL_DUP (sym, sym2); |
1595 | ||
55bcecda | 1596 | if (cs->c_sclass == C_EXT || C_WEAKEXT) |
e148f09d | 1597 | add_symbol_to_list (sym2, get_global_symbols ()); |
c906108c | 1598 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) |
e148f09d | 1599 | add_symbol_to_list (sym2, get_file_symbols ()); |
c906108c SS |
1600 | } |
1601 | else | |
1602 | { | |
581e13c1 | 1603 | /* In case we can't figure out the type, provide default. */ |
46bf5051 | 1604 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
1605 | |
1606 | switch (cs->c_sclass) | |
1607 | { | |
1608 | #if 0 | |
c5aa993b JM |
1609 | /* The values of functions and global symbols are now resolved |
1610 | via the global_sym_chain in stabsread.c. */ | |
c906108c SS |
1611 | case C_FUN: |
1612 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1613 | add_stab_to_list (name, &global_stabs); | |
1614 | else | |
1615 | add_stab_to_list (name, &file_stabs); | |
1616 | break; | |
1617 | ||
1618 | case C_GSYM: | |
1619 | add_stab_to_list (name, &global_stabs); | |
1620 | break; | |
1621 | #endif | |
1622 | ||
1623 | case C_BCOMM: | |
1624 | common_block_start (cs->c_name, objfile); | |
1625 | break; | |
1626 | ||
1627 | case C_ECOMM: | |
1628 | common_block_end (objfile); | |
1629 | break; | |
1630 | ||
1631 | default: | |
b98664d3 | 1632 | complaint (_("Unexpected storage class: %d"), |
23136709 | 1633 | cs->c_sclass); |
c906108c SS |
1634 | /* FALLTHROUGH */ |
1635 | ||
1636 | case C_DECL: | |
1637 | case C_PSYM: | |
1638 | case C_RPSYM: | |
1639 | case C_ECOML: | |
1640 | case C_LSYM: | |
1641 | case C_RSYM: | |
1642 | case C_GSYM: | |
1643 | ||
1644 | { | |
1645 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1646 | if (sym != NULL) | |
1647 | { | |
1648 | SYMBOL_SECTION (sym) = sec; | |
1649 | } | |
1650 | return sym; | |
1651 | } | |
1652 | ||
1653 | case C_STSYM: | |
1654 | ||
1655 | /* For xlc (not GCC), the 'V' symbol descriptor is used for | |
1656 | all statics and we need to distinguish file-scope versus | |
1657 | function-scope using within_function. We do this by | |
1658 | changing the string we pass to define_symbol to use 'S' | |
1659 | where we need to, which is not necessarily super-clean, | |
1660 | but seems workable enough. */ | |
1661 | ||
9b13a2db PM |
1662 | if (*name == ':') |
1663 | return NULL; | |
1664 | ||
ed4b0e6a | 1665 | pp = strchr (name, ':'); |
9b13a2db | 1666 | if (pp == NULL) |
c906108c SS |
1667 | return NULL; |
1668 | ||
1669 | ++pp; | |
1670 | if (*pp == 'V' && !within_function) | |
1671 | *pp = 'S'; | |
1672 | sym = define_symbol ((cs->c_value | |
1673 | + ANOFFSET (objfile->section_offsets, | |
1674 | static_block_section)), | |
1675 | cs->c_name, 0, 0, objfile); | |
1676 | if (sym != NULL) | |
1677 | { | |
7a78ae4e | 1678 | SYMBOL_VALUE_ADDRESS (sym) += static_block_base; |
c906108c SS |
1679 | SYMBOL_SECTION (sym) = static_block_section; |
1680 | } | |
1681 | return sym; | |
1682 | ||
1683 | } | |
1684 | } | |
1685 | return sym2; | |
1686 | } | |
1687 | ||
1688 | /* Extract the file name from the aux entry of a C_FILE symbol. | |
1689 | Result is in static storage and is only good for temporary use. */ | |
1690 | ||
1691 | static char * | |
fba45db2 | 1692 | coff_getfilename (union internal_auxent *aux_entry, struct objfile *objfile) |
c906108c SS |
1693 | { |
1694 | static char buffer[BUFSIZ]; | |
1695 | ||
1696 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
b8b98ad1 TT |
1697 | strcpy (buffer, (XCOFF_DATA (objfile)->strtbl |
1698 | + aux_entry->x_file.x_n.x_offset)); | |
c906108c SS |
1699 | else |
1700 | { | |
1701 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1702 | buffer[FILNMLEN] = '\0'; | |
1703 | } | |
1704 | return (buffer); | |
1705 | } | |
1706 | ||
1707 | /* Set *SYMBOL to symbol number symno in symtbl. */ | |
1708 | static void | |
fba45db2 | 1709 | read_symbol (struct internal_syment *symbol, int symno) |
c906108c | 1710 | { |
02dc647e | 1711 | struct xcoff_symfile_info *xcoff = XCOFF_DATA (this_symtab_objfile); |
b8b98ad1 TT |
1712 | int nsyms = xcoff->symtbl_num_syms; |
1713 | char *stbl = xcoff->symtbl; | |
a109c7c1 | 1714 | |
c906108c SS |
1715 | if (symno < 0 || symno >= nsyms) |
1716 | { | |
b98664d3 | 1717 | complaint (_("Invalid symbol offset")); |
c906108c SS |
1718 | symbol->n_value = 0; |
1719 | symbol->n_scnum = -1; | |
1720 | return; | |
1721 | } | |
5c80ed9d | 1722 | bfd_coff_swap_sym_in (this_symtab_objfile->obfd, |
c5aa993b | 1723 | stbl + (symno * local_symesz), |
c906108c SS |
1724 | symbol); |
1725 | } | |
c5aa993b | 1726 | |
c906108c SS |
1727 | /* Get value corresponding to symbol number symno in symtbl. */ |
1728 | ||
470d5666 | 1729 | static CORE_ADDR |
fba45db2 | 1730 | read_symbol_nvalue (int symno) |
c906108c SS |
1731 | { |
1732 | struct internal_syment symbol[1]; | |
1733 | ||
1734 | read_symbol (symbol, symno); | |
c5aa993b | 1735 | return symbol->n_value; |
c906108c SS |
1736 | } |
1737 | ||
1738 | ||
1739 | /* Find the address of the function corresponding to symno, where | |
1740 | symno is the symbol pointed to by the linetable. */ | |
1741 | ||
1742 | static int | |
fba45db2 | 1743 | read_symbol_lineno (int symno) |
c906108c | 1744 | { |
5c80ed9d | 1745 | struct objfile *objfile = this_symtab_objfile; |
7af35dad | 1746 | int xcoff64 = bfd_xcoff_is_xcoff64 (objfile->obfd); |
7a78ae4e | 1747 | |
02dc647e | 1748 | struct xcoff_symfile_info *info = XCOFF_DATA (objfile); |
7a78ae4e ND |
1749 | int nsyms = info->symtbl_num_syms; |
1750 | char *stbl = info->symtbl; | |
1751 | char *strtbl = info->strtbl; | |
1752 | ||
c906108c SS |
1753 | struct internal_syment symbol[1]; |
1754 | union internal_auxent main_aux[1]; | |
1755 | ||
1756 | if (symno < 0) | |
1757 | { | |
23136709 | 1758 | bf_notfound_complaint (); |
c906108c SS |
1759 | return 0; |
1760 | } | |
1761 | ||
1762 | /* Note that just searching for a short distance (e.g. 50 symbols) | |
1763 | is not enough, at least in the following case. | |
1764 | ||
1765 | .extern foo | |
1766 | [many .stabx entries] | |
1767 | [a few functions, referring to foo] | |
1768 | .globl foo | |
1769 | .bf | |
1770 | ||
1771 | What happens here is that the assembler moves the .stabx entries | |
1772 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1773 | all the stabx entries. See PR gdb/2222. */ | |
1774 | ||
1775 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1776 | If I understand things correctly it would need to be done only for | |
1777 | the duration of a single psymtab to symtab conversion. */ | |
1778 | while (symno < nsyms) | |
1779 | { | |
1780 | bfd_coff_swap_sym_in (symfile_bfd, | |
1781 | stbl + (symno * local_symesz), symbol); | |
7a78ae4e ND |
1782 | if (symbol->n_sclass == C_FCN) |
1783 | { | |
1784 | char *name = xcoff64 ? strtbl + symbol->n_offset : symbol->n_name; | |
a109c7c1 | 1785 | |
7ecb6532 | 1786 | if (strcmp (name, ".bf") == 0) |
7a78ae4e ND |
1787 | goto gotit; |
1788 | } | |
c906108c SS |
1789 | symno += symbol->n_numaux + 1; |
1790 | } | |
1791 | ||
23136709 | 1792 | bf_notfound_complaint (); |
c906108c SS |
1793 | return 0; |
1794 | ||
1795 | gotit: | |
581e13c1 | 1796 | /* Take aux entry and return its lineno. */ |
c906108c | 1797 | symno++; |
7a78ae4e | 1798 | bfd_coff_swap_aux_in (objfile->obfd, stbl + symno * local_symesz, |
c906108c SS |
1799 | symbol->n_type, symbol->n_sclass, |
1800 | 0, symbol->n_numaux, main_aux); | |
1801 | ||
1802 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1803 | } | |
1804 | ||
581e13c1 | 1805 | /* Support for line number handling. */ |
c906108c SS |
1806 | |
1807 | /* This function is called for every section; it finds the outer limits | |
1808 | * of the line table (minimum and maximum file offset) so that the | |
1809 | * mainline code can read the whole thing for efficiency. | |
1810 | */ | |
1811 | static void | |
7be0c536 | 1812 | find_linenos (struct bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c | 1813 | { |
02dc647e | 1814 | struct xcoff_symfile_info *info; |
c906108c SS |
1815 | int size, count; |
1816 | file_ptr offset, maxoff; | |
1817 | ||
1818 | count = asect->lineno_count; | |
1819 | ||
7ecb6532 | 1820 | if (strcmp (asect->name, ".text") != 0 || count == 0) |
c906108c SS |
1821 | return; |
1822 | ||
1823 | size = count * coff_data (abfd)->local_linesz; | |
02dc647e | 1824 | info = (struct xcoff_symfile_info *) vpinfo; |
c906108c SS |
1825 | offset = asect->line_filepos; |
1826 | maxoff = offset + size; | |
1827 | ||
1828 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1829 | info->min_lineno_offset = offset; | |
1830 | ||
1831 | if (maxoff > info->max_lineno_offset) | |
1832 | info->max_lineno_offset = maxoff; | |
1833 | } | |
1834 | \f | |
c906108c | 1835 | static void |
5c80ed9d | 1836 | xcoff_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 1837 | { |
c906108c | 1838 | int i; |
c5aa993b | 1839 | |
c906108c SS |
1840 | if (!pst) |
1841 | return; | |
1842 | ||
1843 | if (pst->readin) | |
1844 | { | |
1845 | fprintf_unfiltered | |
1846 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1847 | pst->filename); | |
1848 | return; | |
1849 | } | |
1850 | ||
581e13c1 | 1851 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
1852 | for (i = 0; i < pst->number_of_dependencies; i++) |
1853 | if (!pst->dependencies[i]->readin) | |
1854 | { | |
1855 | /* Inform about additional files that need to be read in. */ | |
1856 | if (info_verbose) | |
1857 | { | |
1858 | fputs_filtered (" ", gdb_stdout); | |
1859 | wrap_here (""); | |
1860 | fputs_filtered ("and ", gdb_stdout); | |
1861 | wrap_here (""); | |
1862 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1863 | wrap_here (""); /* Flush output */ |
c906108c SS |
1864 | gdb_flush (gdb_stdout); |
1865 | } | |
5c80ed9d | 1866 | xcoff_psymtab_to_symtab_1 (objfile, pst->dependencies[i]); |
c906108c SS |
1867 | } |
1868 | ||
c5aa993b | 1869 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0) |
c906108c SS |
1870 | { |
1871 | /* Init stuff necessary for reading in symbols. */ | |
1872 | stabsread_init (); | |
c906108c | 1873 | |
33c7c59d | 1874 | scoped_free_pendings free_pending; |
5c80ed9d | 1875 | read_xcoff_symtab (objfile, pst); |
c906108c SS |
1876 | } |
1877 | ||
1878 | pst->readin = 1; | |
1879 | } | |
1880 | ||
c906108c | 1881 | /* Read in all of the symbols for a given psymtab for real. |
257e7a09 | 1882 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
1883 | |
1884 | static void | |
257e7a09 | 1885 | xcoff_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 1886 | { |
257e7a09 | 1887 | if (self->readin) |
c906108c SS |
1888 | { |
1889 | fprintf_unfiltered | |
1890 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
257e7a09 | 1891 | self->filename); |
c906108c SS |
1892 | return; |
1893 | } | |
1894 | ||
257e7a09 YQ |
1895 | if (((struct symloc *) self->read_symtab_private)->numsyms != 0 |
1896 | || self->number_of_dependencies) | |
c906108c SS |
1897 | { |
1898 | /* Print the message now, before reading the string table, | |
c5aa993b | 1899 | to avoid disconcerting pauses. */ |
c906108c SS |
1900 | if (info_verbose) |
1901 | { | |
257e7a09 | 1902 | printf_filtered ("Reading in symbols for %s...", self->filename); |
c906108c SS |
1903 | gdb_flush (gdb_stdout); |
1904 | } | |
1905 | ||
c906108c SS |
1906 | next_symbol_text_func = xcoff_next_symbol_text; |
1907 | ||
257e7a09 | 1908 | xcoff_psymtab_to_symtab_1 (objfile, self); |
c906108c SS |
1909 | |
1910 | /* Match with global symbols. This only needs to be done once, | |
1911 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 1912 | scan_file_globals (objfile); |
c906108c SS |
1913 | |
1914 | /* Finish up the debug error message. */ | |
1915 | if (info_verbose) | |
1916 | printf_filtered ("done.\n"); | |
1917 | } | |
1918 | } | |
1919 | \f | |
1920 | static void | |
fba45db2 | 1921 | xcoff_new_init (struct objfile *objfile) |
c906108c SS |
1922 | { |
1923 | stabsread_new_init (); | |
c906108c SS |
1924 | } |
1925 | ||
1926 | /* Do initialization in preparation for reading symbols from OBJFILE. | |
c5aa993b | 1927 | |
c906108c SS |
1928 | We will only be called if this is an XCOFF or XCOFF-like file. |
1929 | BFD handles figuring out the format of the file, and code in symfile.c | |
1930 | uses BFD's determination to vector to us. */ | |
1931 | ||
1932 | static void | |
fba45db2 | 1933 | xcoff_symfile_init (struct objfile *objfile) |
c906108c | 1934 | { |
581e13c1 | 1935 | /* Allocate struct to keep track of the symfile. */ |
02dc647e | 1936 | xcoff_objfile_data_key.emplace (objfile); |
c906108c SS |
1937 | |
1938 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1939 | find this causes a significant slowdown in gdb then we could | |
1940 | set it in the debug symbol readers only when necessary. */ | |
1941 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
1942 | } |
1943 | ||
1944 | /* Perform any local cleanups required when we are done with a particular | |
1945 | objfile. I.E, we are in the process of discarding all symbol information | |
1946 | for an objfile, freeing up all memory held for it, and unlinking the | |
581e13c1 | 1947 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
1948 | |
1949 | static void | |
fba45db2 | 1950 | xcoff_symfile_finish (struct objfile *objfile) |
c906108c | 1951 | { |
c906108c SS |
1952 | /* Start with a fresh include table for the next objfile. */ |
1953 | if (inclTable) | |
1954 | { | |
b8c9b27d | 1955 | xfree (inclTable); |
c906108c SS |
1956 | inclTable = NULL; |
1957 | } | |
1958 | inclIndx = inclLength = inclDepth = 0; | |
1959 | } | |
1960 | ||
1961 | ||
1962 | static void | |
fba45db2 | 1963 | init_stringtab (bfd *abfd, file_ptr offset, struct objfile *objfile) |
c906108c SS |
1964 | { |
1965 | long length; | |
1966 | int val; | |
1967 | unsigned char lengthbuf[4]; | |
1968 | char *strtbl; | |
02dc647e | 1969 | struct xcoff_symfile_info *xcoff = XCOFF_DATA (objfile); |
c906108c | 1970 | |
b8b98ad1 | 1971 | xcoff->strtbl = NULL; |
c906108c SS |
1972 | |
1973 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) | |
8a3fe4f8 | 1974 | error (_("cannot seek to string table in %s: %s"), |
c906108c SS |
1975 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1976 | ||
3a42e9d0 | 1977 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c SS |
1978 | length = bfd_h_get_32 (abfd, lengthbuf); |
1979 | ||
1980 | /* If no string table is needed, then the file may end immediately | |
1981 | after the symbols. Just return with `strtbl' set to NULL. */ | |
1982 | ||
1983 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1984 | return; | |
1985 | ||
581e13c1 MS |
1986 | /* Allocate string table from objfile_obstack. We will need this table |
1987 | as long as we have its symbol table around. */ | |
c906108c | 1988 | |
4a146b47 | 1989 | strtbl = (char *) obstack_alloc (&objfile->objfile_obstack, length); |
b8b98ad1 | 1990 | xcoff->strtbl = strtbl; |
c906108c SS |
1991 | |
1992 | /* Copy length buffer, the first byte is usually zero and is | |
1993 | used for stabs with a name length of zero. */ | |
1994 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
1995 | if (length == sizeof lengthbuf) | |
1996 | return; | |
1997 | ||
3a42e9d0 | 1998 | val = bfd_bread (strtbl + sizeof lengthbuf, length - sizeof lengthbuf, abfd); |
c906108c SS |
1999 | |
2000 | if (val != length - sizeof lengthbuf) | |
8a3fe4f8 | 2001 | error (_("cannot read string table from %s: %s"), |
c906108c SS |
2002 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
2003 | if (strtbl[length - 1] != '\0') | |
3e43a32a MS |
2004 | error (_("bad symbol file: string table " |
2005 | "does not end with null character")); | |
c906108c SS |
2006 | |
2007 | return; | |
2008 | } | |
2009 | \f | |
2010 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
2011 | have seen one, it is the offset in the line numbers of the line numbers | |
2012 | for the psymtab. */ | |
2013 | static unsigned int first_fun_line_offset; | |
2014 | ||
c906108c SS |
2015 | /* Allocate and partially fill a partial symtab. It will be |
2016 | completely filled at the end of the symbol list. | |
2017 | ||
2018 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2019 | is the address relative to which its symbols are (incremental) or 0 | |
581e13c1 | 2020 | (normal). */ |
c906108c SS |
2021 | |
2022 | static struct partial_symtab * | |
0d5cff50 | 2023 | xcoff_start_psymtab (struct objfile *objfile, |
939652a5 | 2024 | const char *filename, int first_symnum) |
c906108c SS |
2025 | { |
2026 | struct partial_symtab *result = | |
18a94d75 | 2027 | start_psymtab_common (objfile, |
a109c7c1 MS |
2028 | filename, |
2029 | /* We fill in textlow later. */ | |
939652a5 | 2030 | 0); |
c906108c | 2031 | |
8d749320 SM |
2032 | result->read_symtab_private = |
2033 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 2034 | ((struct symloc *) result->read_symtab_private)->first_symnum = first_symnum; |
257e7a09 | 2035 | result->read_symtab = xcoff_read_symtab; |
c906108c | 2036 | |
581e13c1 | 2037 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
2038 | psymtab_language = deduce_language_from_filename (filename); |
2039 | ||
2040 | return result; | |
2041 | } | |
2042 | ||
581e13c1 | 2043 | /* Close off the current usage of PST. |
c906108c SS |
2044 | Returns PST, or NULL if the partial symtab was empty and thrown away. |
2045 | ||
2046 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). | |
2047 | ||
2048 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES | |
2049 | are the information for includes and dependencies. */ | |
2050 | ||
2051 | static struct partial_symtab * | |
5c80ed9d TT |
2052 | xcoff_end_psymtab (struct objfile *objfile, struct partial_symtab *pst, |
2053 | const char **include_list, int num_includes, | |
2054 | int capping_symbol_number, | |
fba45db2 KB |
2055 | struct partial_symtab **dependency_list, |
2056 | int number_dependencies, int textlow_not_set) | |
c906108c SS |
2057 | { |
2058 | int i; | |
c906108c SS |
2059 | |
2060 | if (capping_symbol_number != -1) | |
c5aa993b | 2061 | ((struct symloc *) pst->read_symtab_private)->numsyms = |
c906108c | 2062 | capping_symbol_number |
c5aa993b JM |
2063 | - ((struct symloc *) pst->read_symtab_private)->first_symnum; |
2064 | ((struct symloc *) pst->read_symtab_private)->lineno_off = | |
c906108c SS |
2065 | first_fun_line_offset; |
2066 | first_fun_line_offset = 0; | |
8763cede DE |
2067 | |
2068 | end_psymtab_common (objfile, pst); | |
c906108c SS |
2069 | |
2070 | pst->number_of_dependencies = number_dependencies; | |
2071 | if (number_dependencies) | |
2072 | { | |
a9342b62 TT |
2073 | pst->dependencies |
2074 | = objfile->partial_symtabs->allocate_dependencies (number_dependencies); | |
c906108c | 2075 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2076 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2077 | } |
2078 | else | |
2079 | pst->dependencies = 0; | |
2080 | ||
2081 | for (i = 0; i < num_includes; i++) | |
2082 | { | |
2083 | struct partial_symtab *subpst = | |
a109c7c1 | 2084 | allocate_psymtab (include_list[i], objfile); |
c906108c | 2085 | |
e39db4db | 2086 | subpst->read_symtab_private = XOBNEW (&objfile->objfile_obstack, symloc); |
c5aa993b JM |
2087 | ((struct symloc *) subpst->read_symtab_private)->first_symnum = 0; |
2088 | ((struct symloc *) subpst->read_symtab_private)->numsyms = 0; | |
c906108c SS |
2089 | |
2090 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2091 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 | 2092 | subpst->dependencies = |
a9342b62 | 2093 | objfile->partial_symtabs->allocate_dependencies (1); |
c906108c SS |
2094 | subpst->dependencies[0] = pst; |
2095 | subpst->number_of_dependencies = 1; | |
2096 | ||
c906108c SS |
2097 | subpst->read_symtab = pst->read_symtab; |
2098 | } | |
2099 | ||
c906108c SS |
2100 | if (num_includes == 0 |
2101 | && number_dependencies == 0 | |
2102 | && pst->n_global_syms == 0 | |
2103 | && pst->n_static_syms == 0) | |
2104 | { | |
2105 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2106 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2107 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b | 2108 | any symbols in them. There can be a lot of them. */ |
c906108c | 2109 | |
5c80ed9d | 2110 | discard_psymtab (objfile, pst); |
c906108c SS |
2111 | |
2112 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2113 | pst = NULL; |
c906108c SS |
2114 | } |
2115 | return pst; | |
2116 | } | |
2117 | ||
c906108c SS |
2118 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in |
2119 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2120 | the symbol and its auxents. */ | |
2121 | ||
2122 | static void | |
fba45db2 | 2123 | swap_sym (struct internal_syment *symbol, union internal_auxent *aux, |
0d5cff50 | 2124 | const char **name, char **raw, unsigned int *symnump, |
fba45db2 | 2125 | struct objfile *objfile) |
c906108c SS |
2126 | { |
2127 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2128 | if (symbol->n_zeroes) | |
2129 | { | |
2130 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
c5aa993b | 2131 | '\0'-terminated. */ |
c906108c SS |
2132 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') |
2133 | { | |
2134 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2135 | into the minimal symbols. */ | |
2136 | char *p; | |
a109c7c1 | 2137 | |
224c3ddb SM |
2138 | p = (char *) obstack_alloc (&objfile->objfile_obstack, |
2139 | E_SYMNMLEN + 1); | |
c906108c SS |
2140 | strncpy (p, symbol->n_name, E_SYMNMLEN); |
2141 | p[E_SYMNMLEN] = '\0'; | |
2142 | *name = p; | |
2143 | } | |
2144 | else | |
2145 | /* Point to the unswapped name as that persists as long as the | |
2146 | objfile does. */ | |
c5aa993b | 2147 | *name = ((struct external_syment *) *raw)->e.e_name; |
c906108c SS |
2148 | } |
2149 | else if (symbol->n_sclass & 0x80) | |
2150 | { | |
b8b98ad1 | 2151 | *name = XCOFF_DATA (objfile)->debugsec + symbol->n_offset; |
c906108c SS |
2152 | } |
2153 | else | |
2154 | { | |
b8b98ad1 | 2155 | *name = XCOFF_DATA (objfile)->strtbl + symbol->n_offset; |
c906108c SS |
2156 | } |
2157 | ++*symnump; | |
2158 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2159 | if (symbol->n_numaux > 0) | |
2160 | { | |
2161 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2162 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2163 | ||
2164 | *symnump += symbol->n_numaux; | |
2165 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2166 | } | |
2167 | } | |
2168 | ||
23136709 KB |
2169 | static void |
2170 | function_outside_compilation_unit_complaint (const char *arg1) | |
2171 | { | |
b98664d3 | 2172 | complaint (_("function `%s' appears to be defined " |
3e43a32a | 2173 | "outside of all compilation units"), |
23136709 KB |
2174 | arg1); |
2175 | } | |
2176 | ||
c906108c | 2177 | static void |
8dddcb8f TT |
2178 | scan_xcoff_symtab (minimal_symbol_reader &reader, |
2179 | struct objfile *objfile) | |
c906108c | 2180 | { |
40c58d95 | 2181 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
581e13c1 | 2182 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
0d5cff50 | 2183 | const char *filestring = NULL; |
c906108c | 2184 | |
0d5cff50 | 2185 | const char *namestring; |
c906108c SS |
2186 | bfd *abfd; |
2187 | asection *bfd_sect; | |
2188 | unsigned int nsyms; | |
2189 | ||
2190 | /* Current partial symtab */ | |
2191 | struct partial_symtab *pst; | |
2192 | ||
581e13c1 | 2193 | /* List of current psymtab's include files. */ |
0d5cff50 | 2194 | const char **psymtab_include_list; |
c906108c SS |
2195 | int includes_allocated; |
2196 | int includes_used; | |
2197 | ||
581e13c1 | 2198 | /* Index within current psymtab dependency list. */ |
c906108c SS |
2199 | struct partial_symtab **dependency_list; |
2200 | int dependencies_used, dependencies_allocated; | |
2201 | ||
2202 | char *sraw_symbol; | |
2203 | struct internal_syment symbol; | |
96baa820 | 2204 | union internal_auxent main_aux[5]; |
c906108c SS |
2205 | unsigned int ssymnum; |
2206 | ||
0d5cff50 | 2207 | const char *last_csect_name = NULL; /* Last seen csect's name and value. */ |
c906108c SS |
2208 | CORE_ADDR last_csect_val = 0; |
2209 | int last_csect_sec = 0; | |
581e13c1 | 2210 | int misc_func_recorded = 0; /* true if any misc. function. */ |
c906108c SS |
2211 | int textlow_not_set = 1; |
2212 | ||
2213 | pst = (struct partial_symtab *) 0; | |
2214 | ||
2215 | includes_allocated = 30; | |
2216 | includes_used = 0; | |
0d5cff50 DE |
2217 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2218 | sizeof (const char *)); | |
c906108c SS |
2219 | |
2220 | dependencies_allocated = 30; | |
2221 | dependencies_used = 0; | |
2222 | dependency_list = | |
2223 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2224 | sizeof (struct partial_symtab *)); | |
2225 | ||
46212e0b | 2226 | set_last_source_file (NULL); |
c906108c SS |
2227 | |
2228 | abfd = objfile->obfd; | |
13c763f4 | 2229 | next_symbol_text_func = xcoff_next_symbol_text; |
c906108c | 2230 | |
b8b98ad1 TT |
2231 | sraw_symbol = XCOFF_DATA (objfile)->symtbl; |
2232 | nsyms = XCOFF_DATA (objfile)->symtbl_num_syms; | |
c906108c SS |
2233 | ssymnum = 0; |
2234 | while (ssymnum < nsyms) | |
2235 | { | |
7a78ae4e | 2236 | int sclass; |
c906108c SS |
2237 | |
2238 | QUIT; | |
2239 | ||
7a78ae4e ND |
2240 | bfd_coff_swap_sym_in (abfd, sraw_symbol, &symbol); |
2241 | sclass = symbol.n_sclass; | |
2242 | ||
c906108c SS |
2243 | switch (sclass) |
2244 | { | |
2245 | case C_EXT: | |
2246 | case C_HIDEXT: | |
55bcecda | 2247 | case C_WEAKEXT: |
c906108c SS |
2248 | { |
2249 | /* The CSECT auxent--always the last auxent. */ | |
2250 | union internal_auxent csect_aux; | |
2251 | unsigned int symnum_before = ssymnum; | |
2252 | ||
96baa820 | 2253 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2254 | &ssymnum, objfile); |
2255 | if (symbol.n_numaux > 1) | |
2256 | { | |
2257 | bfd_coff_swap_aux_in | |
2258 | (objfile->obfd, | |
c5aa993b | 2259 | sraw_symbol - coff_data (abfd)->local_symesz, |
c906108c SS |
2260 | symbol.n_type, |
2261 | symbol.n_sclass, | |
2262 | symbol.n_numaux - 1, | |
2263 | symbol.n_numaux, | |
2264 | &csect_aux); | |
2265 | } | |
2266 | else | |
96baa820 | 2267 | csect_aux = main_aux[0]; |
c906108c | 2268 | |
977adac5 ND |
2269 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2270 | if (namestring[0] == '$' | |
c906108c SS |
2271 | || (namestring[0] == '.' && namestring[1] == '$')) |
2272 | break; | |
2273 | ||
2274 | switch (csect_aux.x_csect.x_smtyp & 0x7) | |
2275 | { | |
2276 | case XTY_SD: | |
2277 | switch (csect_aux.x_csect.x_smclas) | |
2278 | { | |
2279 | case XMC_PR: | |
2280 | if (last_csect_name) | |
2281 | { | |
2282 | /* If no misc. function recorded in the last | |
581e13c1 | 2283 | seen csect, enter it as a function. This |
c906108c SS |
2284 | will take care of functions like strcmp() |
2285 | compiled by xlc. */ | |
2286 | ||
2287 | if (!misc_func_recorded) | |
2288 | { | |
ec92004f | 2289 | record_minimal_symbol |
8dddcb8f | 2290 | (reader, last_csect_name, last_csect_val, |
ec92004f JB |
2291 | mst_text, last_csect_sec, objfile); |
2292 | misc_func_recorded = 1; | |
c906108c SS |
2293 | } |
2294 | ||
2295 | if (pst != NULL) | |
2296 | { | |
2297 | /* We have to allocate one psymtab for | |
2298 | each program csect, because their text | |
2299 | sections need not be adjacent. */ | |
2300 | xcoff_end_psymtab | |
5c80ed9d TT |
2301 | (objfile, pst, psymtab_include_list, |
2302 | includes_used, symnum_before, dependency_list, | |
c906108c SS |
2303 | dependencies_used, textlow_not_set); |
2304 | includes_used = 0; | |
2305 | dependencies_used = 0; | |
2306 | /* Give all psymtabs for this source file the same | |
2307 | name. */ | |
2308 | pst = xcoff_start_psymtab | |
d4f3574e | 2309 | (objfile, |
c906108c | 2310 | filestring, |
939652a5 | 2311 | symnum_before); |
c906108c SS |
2312 | } |
2313 | } | |
977adac5 ND |
2314 | /* Activate the misc_func_recorded mechanism for |
2315 | compiler- and linker-generated CSECTs like ".strcmp" | |
2316 | and "@FIX1". */ | |
2317 | if (namestring && (namestring[0] == '.' | |
2318 | || namestring[0] == '@')) | |
c906108c SS |
2319 | { |
2320 | last_csect_name = namestring; | |
2321 | last_csect_val = symbol.n_value; | |
ec92004f | 2322 | last_csect_sec = symbol.n_scnum; |
c906108c SS |
2323 | } |
2324 | if (pst != NULL) | |
2325 | { | |
2326 | CORE_ADDR highval = | |
a109c7c1 MS |
2327 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; |
2328 | ||
79748972 | 2329 | if (highval > pst->raw_text_high ()) |
4ae976d1 | 2330 | pst->set_text_high (highval); |
52948f01 | 2331 | if (!pst->text_low_valid |
79748972 | 2332 | || symbol.n_value < pst->raw_text_low ()) |
4ae976d1 | 2333 | pst->set_text_low (symbol.n_value); |
c906108c SS |
2334 | } |
2335 | misc_func_recorded = 0; | |
2336 | break; | |
2337 | ||
2338 | case XMC_RW: | |
6904b546 | 2339 | case XMC_TD: |
c906108c SS |
2340 | /* Data variables are recorded in the minimal symbol |
2341 | table, except for section symbols. */ | |
2342 | if (*namestring != '.') | |
4d1eb6b4 | 2343 | record_minimal_symbol |
8dddcb8f | 2344 | (reader, namestring, symbol.n_value, |
c906108c | 2345 | sclass == C_HIDEXT ? mst_file_data : mst_data, |
4d1eb6b4 | 2346 | symbol.n_scnum, objfile); |
c906108c SS |
2347 | break; |
2348 | ||
2349 | case XMC_TC0: | |
2350 | if (toc_offset) | |
8a3fe4f8 | 2351 | warning (_("More than one XMC_TC0 symbol found.")); |
c906108c SS |
2352 | toc_offset = symbol.n_value; |
2353 | ||
3e43a32a MS |
2354 | /* Make TOC offset relative to start address of |
2355 | section. */ | |
c906108c SS |
2356 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); |
2357 | if (bfd_sect) | |
2358 | toc_offset -= bfd_section_vma (objfile->obfd, bfd_sect); | |
2359 | break; | |
2360 | ||
2361 | case XMC_TC: | |
2362 | /* These symbols tell us where the TOC entry for a | |
2363 | variable is, not the variable itself. */ | |
2364 | break; | |
2365 | ||
2366 | default: | |
2367 | break; | |
2368 | } | |
2369 | break; | |
2370 | ||
2371 | case XTY_LD: | |
2372 | switch (csect_aux.x_csect.x_smclas) | |
2373 | { | |
2374 | case XMC_PR: | |
2375 | /* A function entry point. */ | |
2376 | ||
2377 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2378 | first_fun_line_offset = | |
96baa820 | 2379 | main_aux[0].x_sym.x_fcnary.x_fcn.x_lnnoptr; |
a2e3e93f SM |
2380 | |
2381 | record_minimal_symbol | |
8dddcb8f | 2382 | (reader, namestring, symbol.n_value, |
a2e3e93f SM |
2383 | sclass == C_HIDEXT ? mst_file_text : mst_text, |
2384 | symbol.n_scnum, objfile); | |
2385 | misc_func_recorded = 1; | |
c906108c SS |
2386 | break; |
2387 | ||
2388 | case XMC_GL: | |
2389 | /* shared library function trampoline code entry | |
581e13c1 | 2390 | point. */ |
c906108c SS |
2391 | |
2392 | /* record trampoline code entries as | |
2393 | mst_solib_trampoline symbol. When we lookup mst | |
2394 | symbols, we will choose mst_text over | |
581e13c1 | 2395 | mst_solib_trampoline. */ |
ec92004f | 2396 | record_minimal_symbol |
8dddcb8f | 2397 | (reader, namestring, symbol.n_value, |
ec92004f JB |
2398 | mst_solib_trampoline, symbol.n_scnum, objfile); |
2399 | misc_func_recorded = 1; | |
c906108c SS |
2400 | break; |
2401 | ||
2402 | case XMC_DS: | |
2403 | /* The symbols often have the same names as | |
2404 | debug symbols for functions, and confuse | |
2405 | lookup_symbol. */ | |
2406 | break; | |
2407 | ||
2408 | default: | |
2409 | ||
2410 | /* xlc puts each variable in a separate csect, | |
2411 | so we get an XTY_SD for each variable. But | |
2412 | gcc puts several variables in a csect, so | |
2413 | that each variable only gets an XTY_LD. We | |
2414 | still need to record them. This will | |
2415 | typically be XMC_RW; I suspect XMC_RO and | |
2416 | XMC_BS might be possible too. */ | |
2417 | if (*namestring != '.') | |
4d1eb6b4 | 2418 | record_minimal_symbol |
8dddcb8f | 2419 | (reader, namestring, symbol.n_value, |
c906108c | 2420 | sclass == C_HIDEXT ? mst_file_data : mst_data, |
4d1eb6b4 | 2421 | symbol.n_scnum, objfile); |
c906108c SS |
2422 | break; |
2423 | } | |
2424 | break; | |
2425 | ||
2426 | case XTY_CM: | |
2427 | switch (csect_aux.x_csect.x_smclas) | |
2428 | { | |
2429 | case XMC_RW: | |
2430 | case XMC_BS: | |
2431 | /* Common variables are recorded in the minimal symbol | |
2432 | table, except for section symbols. */ | |
2433 | if (*namestring != '.') | |
4d1eb6b4 | 2434 | record_minimal_symbol |
8dddcb8f | 2435 | (reader, namestring, symbol.n_value, |
c906108c | 2436 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, |
4d1eb6b4 | 2437 | symbol.n_scnum, objfile); |
c906108c SS |
2438 | break; |
2439 | } | |
2440 | break; | |
2441 | ||
2442 | default: | |
2443 | break; | |
2444 | } | |
2445 | } | |
2446 | break; | |
2447 | case C_FILE: | |
2448 | { | |
2449 | unsigned int symnum_before; | |
2450 | ||
2451 | symnum_before = ssymnum; | |
96baa820 | 2452 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2453 | &ssymnum, objfile); |
2454 | ||
2455 | /* See if the last csect needs to be recorded. */ | |
2456 | ||
2457 | if (last_csect_name && !misc_func_recorded) | |
2458 | { | |
c906108c SS |
2459 | /* If no misc. function recorded in the last seen csect, enter |
2460 | it as a function. This will take care of functions like | |
2461 | strcmp() compiled by xlc. */ | |
2462 | ||
8dddcb8f | 2463 | record_minimal_symbol (reader, last_csect_name, last_csect_val, |
ec92004f JB |
2464 | mst_text, last_csect_sec, objfile); |
2465 | misc_func_recorded = 1; | |
c906108c SS |
2466 | } |
2467 | ||
2468 | if (pst) | |
2469 | { | |
5c80ed9d TT |
2470 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, |
2471 | includes_used, symnum_before, | |
2472 | dependency_list, dependencies_used, | |
2473 | textlow_not_set); | |
c906108c SS |
2474 | includes_used = 0; |
2475 | dependencies_used = 0; | |
2476 | } | |
2477 | first_fun_line_offset = 0; | |
2478 | ||
2479 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2480 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2481 | do things the standard COFF way and put it in the auxent. | |
2482 | We use the auxent if the symbol is ".file" and an auxent | |
2483 | exists, otherwise use the symbol itself. */ | |
2484 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2485 | { | |
96baa820 | 2486 | filestring = coff_getfilename (&main_aux[0], objfile); |
c906108c SS |
2487 | } |
2488 | else | |
2489 | filestring = namestring; | |
2490 | ||
d4f3574e | 2491 | pst = xcoff_start_psymtab (objfile, |
c906108c | 2492 | filestring, |
939652a5 | 2493 | symnum_before); |
c906108c SS |
2494 | last_csect_name = NULL; |
2495 | } | |
2496 | break; | |
2497 | ||
2498 | default: | |
2499 | { | |
b98664d3 | 2500 | complaint (_("Storage class %d not recognized during scan"), |
3e43a32a | 2501 | sclass); |
c906108c SS |
2502 | } |
2503 | /* FALLTHROUGH */ | |
2504 | ||
86a73007 | 2505 | case C_FCN: |
c906108c SS |
2506 | /* C_FCN is .bf and .ef symbols. I think it is sufficient |
2507 | to handle only the C_FUN and C_EXT. */ | |
c906108c SS |
2508 | |
2509 | case C_BSTAT: | |
2510 | case C_ESTAT: | |
2511 | case C_ARG: | |
2512 | case C_REGPARM: | |
2513 | case C_REG: | |
2514 | case C_TPDEF: | |
2515 | case C_STRTAG: | |
2516 | case C_UNTAG: | |
2517 | case C_ENTAG: | |
2518 | case C_LABEL: | |
2519 | case C_NULL: | |
2520 | ||
2521 | /* C_EINCL means we are switching back to the main file. But there | |
2522 | is no reason to care; the only thing we want to know about | |
2523 | includes is the names of all the included (.h) files. */ | |
2524 | case C_EINCL: | |
2525 | ||
2526 | case C_BLOCK: | |
2527 | ||
2528 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2529 | used instead. */ | |
2530 | case C_STAT: | |
2531 | ||
2532 | /* I don't think the name of the common block (as opposed to the | |
2533 | variables within it) is something which is user visible | |
2534 | currently. */ | |
2535 | case C_BCOMM: | |
2536 | case C_ECOMM: | |
2537 | ||
2538 | case C_PSYM: | |
2539 | case C_RPSYM: | |
2540 | ||
2541 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2542 | so C_LSYM would appear to be only for locals. */ | |
2543 | case C_LSYM: | |
2544 | ||
2545 | case C_AUTO: | |
2546 | case C_RSYM: | |
2547 | { | |
2548 | /* We probably could save a few instructions by assuming that | |
2549 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
7a78ae4e | 2550 | int naux1 = symbol.n_numaux + 1; |
a109c7c1 | 2551 | |
c906108c | 2552 | ssymnum += naux1; |
7a78ae4e | 2553 | sraw_symbol += bfd_coff_symesz (abfd) * naux1; |
c906108c SS |
2554 | } |
2555 | break; | |
2556 | ||
2557 | case C_BINCL: | |
d5d0a62f | 2558 | { |
581e13c1 | 2559 | /* Mark down an include file in the current psymtab. */ |
d5d0a62f | 2560 | enum language tmp_language; |
a109c7c1 | 2561 | |
d5d0a62f EZ |
2562 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2563 | &ssymnum, objfile); | |
2564 | ||
2565 | tmp_language = deduce_language_from_filename (namestring); | |
2566 | ||
2567 | /* Only change the psymtab's language if we've learned | |
2568 | something useful (eg. tmp_language is not language_unknown). | |
2569 | In addition, to match what start_subfile does, never change | |
2570 | from C++ to C. */ | |
2571 | if (tmp_language != language_unknown | |
2572 | && (tmp_language != language_c | |
2573 | || psymtab_language != language_cplus)) | |
2574 | psymtab_language = tmp_language; | |
2575 | ||
2576 | /* In C++, one may expect the same filename to come round many | |
2577 | times, when code is coming alternately from the main file | |
581e13c1 | 2578 | and from inline functions in other files. So I check to see |
d5d0a62f EZ |
2579 | if this is a file we've seen before -- either the main |
2580 | source file, or a previously included file. | |
2581 | ||
2582 | This seems to be a lot of time to be spending on N_SOL, but | |
2583 | things like "break c-exp.y:435" need to work (I | |
2584 | suppose the psymtab_include_list could be hashed or put | |
2585 | in a binary tree, if profiling shows this is a major hog). */ | |
7ecb6532 | 2586 | if (pst && strcmp (namestring, pst->filename) == 0) |
d5d0a62f | 2587 | continue; |
a109c7c1 | 2588 | |
d5d0a62f | 2589 | { |
aa1ee363 | 2590 | int i; |
a109c7c1 | 2591 | |
d5d0a62f | 2592 | for (i = 0; i < includes_used; i++) |
7ecb6532 | 2593 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
d5d0a62f EZ |
2594 | { |
2595 | i = -1; | |
2596 | break; | |
2597 | } | |
2598 | if (i == -1) | |
2599 | continue; | |
2600 | } | |
2601 | psymtab_include_list[includes_used++] = namestring; | |
2602 | if (includes_used >= includes_allocated) | |
2603 | { | |
0d5cff50 | 2604 | const char **orig = psymtab_include_list; |
c906108c | 2605 | |
0d5cff50 | 2606 | psymtab_include_list = (const char **) |
d5d0a62f | 2607 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 2608 | sizeof (const char *)); |
4efb68b1 | 2609 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 2610 | includes_used * sizeof (const char *)); |
d5d0a62f EZ |
2611 | } |
2612 | continue; | |
2613 | } | |
c906108c SS |
2614 | case C_FUN: |
2615 | /* The value of the C_FUN is not the address of the function (it | |
2616 | appears to be the address before linking), but as long as it | |
2617 | is smaller than the actual address, then find_pc_partial_function | |
2618 | will use the minimal symbols instead. I hope. */ | |
2619 | ||
2620 | case C_GSYM: | |
2621 | case C_ECOML: | |
2622 | case C_DECL: | |
2623 | case C_STSYM: | |
d5d0a62f | 2624 | { |
e28566f7 | 2625 | const char *p; |
a109c7c1 | 2626 | |
d5d0a62f EZ |
2627 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2628 | &ssymnum, objfile); | |
2629 | ||
ed4b0e6a | 2630 | p = strchr (namestring, ':'); |
d5d0a62f EZ |
2631 | if (!p) |
2632 | continue; /* Not a debugging symbol. */ | |
2633 | ||
2634 | /* Main processing section for debugging symbols which | |
2635 | the initial read through the symbol tables needs to worry | |
2636 | about. If we reach this point, the symbol which we are | |
2637 | considering is definitely one we are interested in. | |
2638 | p must also contain the (valid) index into the namestring | |
2639 | which indicates the debugging type symbol. */ | |
2640 | ||
2641 | switch (p[1]) | |
2642 | { | |
2643 | case 'S': | |
5e2b427d | 2644 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 2645 | namestring = gdbarch_static_transform_name |
5e2b427d | 2646 | (gdbarch, namestring); |
149ad273 | 2647 | |
04a679b8 | 2648 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2649 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 2650 | SECT_OFF_DATA (objfile), |
75aedd27 | 2651 | psymbol_placement::STATIC, |
1762568f | 2652 | symbol.n_value, |
d5d0a62f EZ |
2653 | psymtab_language, objfile); |
2654 | continue; | |
2655 | ||
2656 | case 'G': | |
d5d0a62f | 2657 | /* The addresses in these entries are reported to be |
581e13c1 | 2658 | wrong. See the code that reads 'G's for symtabs. */ |
04a679b8 | 2659 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2660 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 2661 | SECT_OFF_DATA (objfile), |
75aedd27 | 2662 | psymbol_placement::GLOBAL, |
1762568f | 2663 | symbol.n_value, |
d5d0a62f EZ |
2664 | psymtab_language, objfile); |
2665 | continue; | |
2666 | ||
2667 | case 'T': | |
2668 | /* When a 'T' entry is defining an anonymous enum, it | |
2669 | may have a name which is the empty string, or a | |
2670 | single space. Since they're not really defining a | |
2671 | symbol, those shouldn't go in the partial symbol | |
2672 | table. We do pick up the elements of such enums at | |
2673 | 'check_enum:', below. */ | |
2674 | if (p >= namestring + 2 | |
2675 | || (p == namestring + 1 | |
2676 | && namestring[0] != ' ')) | |
2677 | { | |
04a679b8 | 2678 | add_psymbol_to_list (namestring, p - namestring, 1, |
79748972 | 2679 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 2680 | psymbol_placement::STATIC, |
1762568f | 2681 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2682 | if (p[2] == 't') |
2683 | { | |
2684 | /* Also a typedef with the same name. */ | |
04a679b8 | 2685 | add_psymbol_to_list (namestring, p - namestring, 1, |
79748972 | 2686 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 2687 | psymbol_placement::STATIC, |
1762568f | 2688 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2689 | p += 1; |
2690 | } | |
d5d0a62f EZ |
2691 | } |
2692 | goto check_enum; | |
2693 | ||
2694 | case 't': | |
581e13c1 | 2695 | if (p != namestring) /* a name is there, not just :T... */ |
d5d0a62f | 2696 | { |
04a679b8 | 2697 | add_psymbol_to_list (namestring, p - namestring, 1, |
79748972 | 2698 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 2699 | psymbol_placement::STATIC, |
1762568f | 2700 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2701 | } |
2702 | check_enum: | |
2703 | /* If this is an enumerated type, we need to | |
2704 | add all the enum constants to the partial symbol | |
2705 | table. This does not cover enums without names, e.g. | |
2706 | "enum {a, b} c;" in C, but fortunately those are | |
2707 | rare. There is no way for GDB to find those from the | |
2708 | enum type without spending too much time on it. Thus | |
2709 | to solve this problem, the compiler needs to put out the | |
2710 | enum in a nameless type. GCC2 does this. */ | |
2711 | ||
2712 | /* We are looking for something of the form | |
2713 | <name> ":" ("t" | "T") [<number> "="] "e" | |
2714 | {<constant> ":" <value> ","} ";". */ | |
2715 | ||
2716 | /* Skip over the colon and the 't' or 'T'. */ | |
2717 | p += 2; | |
2718 | /* This type may be given a number. Also, numbers can come | |
2719 | in pairs like (0,26). Skip over it. */ | |
2720 | while ((*p >= '0' && *p <= '9') | |
2721 | || *p == '(' || *p == ',' || *p == ')' | |
2722 | || *p == '=') | |
2723 | p++; | |
2724 | ||
2725 | if (*p++ == 'e') | |
2726 | { | |
3e43a32a MS |
2727 | /* The aix4 compiler emits extra crud before the |
2728 | members. */ | |
d5d0a62f EZ |
2729 | if (*p == '-') |
2730 | { | |
2731 | /* Skip over the type (?). */ | |
2732 | while (*p != ':') | |
2733 | p++; | |
2734 | ||
2735 | /* Skip over the colon. */ | |
2736 | p++; | |
2737 | } | |
2738 | ||
2739 | /* We have found an enumerated type. */ | |
2740 | /* According to comments in read_enum_type | |
2741 | a comma could end it instead of a semicolon. | |
2742 | I don't know where that happens. | |
2743 | Accept either. */ | |
2744 | while (*p && *p != ';' && *p != ',') | |
2745 | { | |
e28566f7 | 2746 | const char *q; |
d5d0a62f EZ |
2747 | |
2748 | /* Check for and handle cretinous dbx symbol name | |
2749 | continuation! */ | |
2750 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
2751 | p = next_symbol_text (objfile); | |
2752 | ||
2753 | /* Point to the character after the name | |
2754 | of the enum constant. */ | |
2755 | for (q = p; *q && *q != ':'; q++) | |
2756 | ; | |
2757 | /* Note that the value doesn't matter for | |
2758 | enum constants in psymtabs, just in symtabs. */ | |
04a679b8 | 2759 | add_psymbol_to_list (p, q - p, 1, |
79748972 | 2760 | VAR_DOMAIN, LOC_CONST, -1, |
75aedd27 | 2761 | psymbol_placement::STATIC, |
d5d0a62f EZ |
2762 | 0, psymtab_language, objfile); |
2763 | /* Point past the name. */ | |
2764 | p = q; | |
2765 | /* Skip over the value. */ | |
2766 | while (*p && *p != ',') | |
2767 | p++; | |
2768 | /* Advance past the comma. */ | |
2769 | if (*p) | |
2770 | p++; | |
2771 | } | |
2772 | } | |
2773 | continue; | |
2774 | ||
2775 | case 'c': | |
2776 | /* Constant, e.g. from "const" in Pascal. */ | |
04a679b8 | 2777 | add_psymbol_to_list (namestring, p - namestring, 1, |
79748972 | 2778 | VAR_DOMAIN, LOC_CONST, -1, |
75aedd27 | 2779 | psymbol_placement::STATIC, |
d5d0a62f EZ |
2780 | 0, psymtab_language, objfile); |
2781 | continue; | |
2782 | ||
2783 | case 'f': | |
2784 | if (! pst) | |
2785 | { | |
2786 | int name_len = p - namestring; | |
224c3ddb | 2787 | char *name = (char *) xmalloc (name_len + 1); |
a109c7c1 | 2788 | |
d5d0a62f EZ |
2789 | memcpy (name, namestring, name_len); |
2790 | name[name_len] = '\0'; | |
23136709 | 2791 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2792 | xfree (name); |
2793 | } | |
04a679b8 | 2794 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2795 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 2796 | SECT_OFF_TEXT (objfile), |
75aedd27 | 2797 | psymbol_placement::STATIC, |
1762568f | 2798 | symbol.n_value, |
d5d0a62f EZ |
2799 | psymtab_language, objfile); |
2800 | continue; | |
2801 | ||
2802 | /* Global functions were ignored here, but now they | |
2803 | are put into the global psymtab like one would expect. | |
2804 | They're also in the minimal symbol table. */ | |
2805 | case 'F': | |
2806 | if (! pst) | |
2807 | { | |
2808 | int name_len = p - namestring; | |
224c3ddb | 2809 | char *name = (char *) xmalloc (name_len + 1); |
a109c7c1 | 2810 | |
d5d0a62f EZ |
2811 | memcpy (name, namestring, name_len); |
2812 | name[name_len] = '\0'; | |
23136709 | 2813 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2814 | xfree (name); |
2815 | } | |
9f1d5432 PH |
2816 | |
2817 | /* We need only the minimal symbols for these | |
581e13c1 | 2818 | loader-generated definitions. Keeping the global |
9f1d5432 | 2819 | symbols leads to "in psymbols but not in symbols" |
581e13c1 | 2820 | errors. */ |
61012eef | 2821 | if (startswith (namestring, "@FIX")) |
9f1d5432 PH |
2822 | continue; |
2823 | ||
04a679b8 | 2824 | add_psymbol_to_list (namestring, p - namestring, 1, |
176620f1 | 2825 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 2826 | SECT_OFF_TEXT (objfile), |
75aedd27 | 2827 | psymbol_placement::GLOBAL, |
1762568f | 2828 | symbol.n_value, |
d5d0a62f EZ |
2829 | psymtab_language, objfile); |
2830 | continue; | |
2831 | ||
2832 | /* Two things show up here (hopefully); static symbols of | |
2833 | local scope (static used inside braces) or extensions | |
2834 | of structure symbols. We can ignore both. */ | |
2835 | case 'V': | |
2836 | case '(': | |
2837 | case '0': | |
2838 | case '1': | |
2839 | case '2': | |
2840 | case '3': | |
2841 | case '4': | |
2842 | case '5': | |
2843 | case '6': | |
2844 | case '7': | |
2845 | case '8': | |
2846 | case '9': | |
2847 | case '-': | |
3e43a32a MS |
2848 | case '#': /* For symbol identification (used in |
2849 | live ranges). */ | |
d5d0a62f EZ |
2850 | continue; |
2851 | ||
2852 | case ':': | |
2853 | /* It is a C++ nested symbol. We don't need to record it | |
2854 | (I don't think); if we try to look up foo::bar::baz, | |
2855 | then symbols for the symtab containing foo should get | |
2856 | read in, I think. */ | |
2857 | /* Someone says sun cc puts out symbols like | |
2858 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2859 | which would get here with a symbol type of ':'. */ | |
2860 | continue; | |
2861 | ||
2862 | default: | |
3e43a32a MS |
2863 | /* Unexpected symbol descriptor. The second and |
2864 | subsequent stabs of a continued stab can show up | |
2865 | here. The question is whether they ever can mimic | |
2866 | a normal stab--it would be nice if not, since we | |
2867 | certainly don't want to spend the time searching to | |
2868 | the end of every string looking for a | |
2869 | backslash. */ | |
d5d0a62f | 2870 | |
b98664d3 | 2871 | complaint (_("unknown symbol descriptor `%c'"), p[1]); |
d5d0a62f EZ |
2872 | |
2873 | /* Ignore it; perhaps it is an extension that we don't | |
2874 | know about. */ | |
2875 | continue; | |
2876 | } | |
2877 | } | |
c906108c SS |
2878 | } |
2879 | } | |
2880 | ||
2881 | if (pst) | |
2882 | { | |
5c80ed9d | 2883 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
c906108c SS |
2884 | ssymnum, dependency_list, |
2885 | dependencies_used, textlow_not_set); | |
2886 | } | |
2887 | ||
581e13c1 MS |
2888 | /* Record the toc offset value of this symbol table into objfile |
2889 | structure. If no XMC_TC0 is found, toc_offset should be zero. | |
2890 | Another place to obtain this information would be file auxiliary | |
2891 | header. */ | |
c906108c | 2892 | |
b8b98ad1 | 2893 | XCOFF_DATA (objfile)->toc_offset = toc_offset; |
c906108c SS |
2894 | } |
2895 | ||
2896 | /* Return the toc offset value for a given objfile. */ | |
2897 | ||
2898 | CORE_ADDR | |
63807e1d | 2899 | xcoff_get_toc_offset (struct objfile *objfile) |
c906108c SS |
2900 | { |
2901 | if (objfile) | |
b8b98ad1 | 2902 | return XCOFF_DATA (objfile)->toc_offset; |
c906108c SS |
2903 | return 0; |
2904 | } | |
2905 | ||
2906 | /* Scan and build partial symbols for a symbol file. | |
2907 | We have been initialized by a call to dbx_symfile_init, which | |
2908 | put all the relevant info into a "struct dbx_symfile_info", | |
2909 | hung off the objfile structure. | |
2910 | ||
2911 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
581e13c1 MS |
2912 | various sections are (depending where the sections were actually |
2913 | loaded). */ | |
c906108c SS |
2914 | |
2915 | static void | |
b15cc25c | 2916 | xcoff_initial_scan (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
2917 | { |
2918 | bfd *abfd; | |
2919 | int val; | |
c5aa993b JM |
2920 | int num_symbols; /* # of symbols */ |
2921 | file_ptr symtab_offset; /* symbol table and */ | |
2922 | file_ptr stringtab_offset; /* string table file offsets */ | |
02dc647e | 2923 | struct xcoff_symfile_info *info; |
4262abfb | 2924 | const char *name; |
c906108c SS |
2925 | unsigned int size; |
2926 | ||
b8b98ad1 | 2927 | info = XCOFF_DATA (objfile); |
c906108c | 2928 | symfile_bfd = abfd = objfile->obfd; |
4262abfb | 2929 | name = objfile_name (objfile); |
c906108c SS |
2930 | |
2931 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2932 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2933 | stringtab_offset = symtab_offset + | |
c5aa993b | 2934 | num_symbols * coff_data (abfd)->local_symesz; |
c906108c SS |
2935 | |
2936 | info->min_lineno_offset = 0; | |
2937 | info->max_lineno_offset = 0; | |
2938 | bfd_map_over_sections (abfd, find_linenos, info); | |
2939 | ||
2940 | if (num_symbols > 0) | |
2941 | { | |
2942 | /* Read the string table. */ | |
2943 | init_stringtab (abfd, stringtab_offset, objfile); | |
2944 | ||
97cbe998 SDJ |
2945 | /* Read the .debug section, if present and if we're not ignoring |
2946 | it. */ | |
2947 | if (!(objfile->flags & OBJF_READNEVER)) | |
2948 | { | |
2949 | struct bfd_section *secp; | |
2950 | bfd_size_type length; | |
2951 | bfd_byte *debugsec = NULL; | |
c906108c | 2952 | |
97cbe998 SDJ |
2953 | secp = bfd_get_section_by_name (abfd, ".debug"); |
2954 | if (secp) | |
2955 | { | |
2956 | length = bfd_section_size (abfd, secp); | |
2957 | if (length) | |
2958 | { | |
2959 | debugsec | |
2960 | = (bfd_byte *) obstack_alloc (&objfile->objfile_obstack, | |
2961 | length); | |
c906108c | 2962 | |
97cbe998 SDJ |
2963 | if (!bfd_get_full_section_contents (abfd, secp, &debugsec)) |
2964 | { | |
2965 | error (_("Error reading .debug section of `%s': %s"), | |
2966 | name, bfd_errmsg (bfd_get_error ())); | |
2967 | } | |
2968 | } | |
2969 | } | |
2970 | info->debugsec = (char *) debugsec; | |
2971 | } | |
c906108c SS |
2972 | } |
2973 | ||
2974 | /* Read the symbols. We keep them in core because we will want to | |
2975 | access them randomly in read_symbol*. */ | |
2976 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); | |
2977 | if (val < 0) | |
8a3fe4f8 | 2978 | error (_("Error reading symbols from %s: %s"), |
c906108c SS |
2979 | name, bfd_errmsg (bfd_get_error ())); |
2980 | size = coff_data (abfd)->local_symesz * num_symbols; | |
224c3ddb | 2981 | info->symtbl = (char *) obstack_alloc (&objfile->objfile_obstack, size); |
b8b98ad1 TT |
2982 | info->symtbl_num_syms = num_symbols; |
2983 | ||
2984 | val = bfd_bread (info->symtbl, size, abfd); | |
c906108c | 2985 | if (val != size) |
e2e0b3e5 | 2986 | perror_with_name (_("reading symbol table")); |
c906108c | 2987 | |
6eee24ce TT |
2988 | /* I'm not sure how how good num_symbols is; the rule of thumb in |
2989 | init_psymbol_list was developed for a.out. On the one hand, | |
2990 | num_symbols includes auxents. On the other hand, it doesn't | |
2991 | include N_SLINE. */ | |
2992 | init_psymbol_list (objfile, num_symbols); | |
c906108c | 2993 | |
33c7c59d | 2994 | scoped_free_pendings free_pending; |
d25e8719 | 2995 | minimal_symbol_reader reader (objfile); |
c906108c SS |
2996 | |
2997 | /* Now that the symbol table data of the executable file are all in core, | |
2998 | process them and define symbols accordingly. */ | |
2999 | ||
8dddcb8f | 3000 | scan_xcoff_symtab (reader, objfile); |
c906108c SS |
3001 | |
3002 | /* Install any minimal symbols that have been collected as the current | |
581e13c1 | 3003 | minimal symbols for this objfile. */ |
c906108c | 3004 | |
d25e8719 | 3005 | reader.install (); |
c906108c | 3006 | |
316a8b21 TG |
3007 | /* DWARF2 sections. */ |
3008 | ||
3009 | if (dwarf2_has_info (objfile, &dwarf2_xcoff_names)) | |
3010 | dwarf2_build_psymtabs (objfile); | |
3011 | ||
3012 | dwarf2_build_frame_info (objfile); | |
c906108c SS |
3013 | } |
3014 | \f | |
d4f3574e | 3015 | static void |
3e43a32a | 3016 | xcoff_symfile_offsets (struct objfile *objfile, |
37e136b1 | 3017 | const section_addr_info &addrs) |
c906108c | 3018 | { |
4d1eb6b4 | 3019 | const char *first_section_name; |
c906108c | 3020 | |
4d1eb6b4 | 3021 | default_symfile_offsets (objfile, addrs); |
c906108c | 3022 | |
4d1eb6b4 JB |
3023 | /* Oneof the weird side-effects of default_symfile_offsets is that |
3024 | it sometimes sets some section indices to zero for sections that, | |
3025 | in fact do not exist. See the body of default_symfile_offsets | |
3026 | for more info on when that happens. Undo that, as this then allows | |
3027 | us to test whether the associated section exists or not, and then | |
3028 | access it quickly (without searching it again). */ | |
b8fbeb18 | 3029 | |
4d1eb6b4 JB |
3030 | if (objfile->num_sections == 0) |
3031 | return; /* Is that even possible? Better safe than sorry. */ | |
b8fbeb18 | 3032 | |
4d1eb6b4 JB |
3033 | first_section_name |
3034 | = bfd_section_name (objfile->obfd, objfile->sections[0].the_bfd_section); | |
b8fbeb18 | 3035 | |
4d1eb6b4 JB |
3036 | if (objfile->sect_index_text == 0 |
3037 | && strcmp (first_section_name, ".text") != 0) | |
3038 | objfile->sect_index_text = -1; | |
b8fbeb18 | 3039 | |
4d1eb6b4 JB |
3040 | if (objfile->sect_index_data == 0 |
3041 | && strcmp (first_section_name, ".data") != 0) | |
3042 | objfile->sect_index_data = -1; | |
3043 | ||
3044 | if (objfile->sect_index_bss == 0 | |
3045 | && strcmp (first_section_name, ".bss") != 0) | |
3046 | objfile->sect_index_bss = -1; | |
3047 | ||
3048 | if (objfile->sect_index_rodata == 0 | |
3049 | && strcmp (first_section_name, ".rodata") != 0) | |
3050 | objfile->sect_index_rodata = -1; | |
c906108c SS |
3051 | } |
3052 | ||
3053 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
3054 | ||
00b5771c | 3055 | static const struct sym_fns xcoff_sym_fns = |
c906108c SS |
3056 | { |
3057 | ||
7a78ae4e | 3058 | /* It is possible that coff and xcoff should be merged as |
c906108c SS |
3059 | they do have fundamental similarities (for example, the extra storage |
3060 | classes used for stabs could presumably be recognized in any COFF file). | |
3061 | However, in addition to obvious things like all the csect hair, there are | |
3062 | some subtler differences between xcoffread.c and coffread.c, notably | |
3063 | the fact that coffread.c has no need to read in all the symbols, but | |
3064 | xcoffread.c reads all the symbols and does in fact randomly access them | |
3065 | (in C_BSTAT and line number processing). */ | |
3066 | ||
3e43a32a MS |
3067 | xcoff_new_init, /* init anything gbl to entire symtab */ |
3068 | xcoff_symfile_init, /* read initial info, setup for sym_read() */ | |
3069 | xcoff_initial_scan, /* read a symbol file into symtab */ | |
b11896a5 | 3070 | NULL, /* sym_read_psymbols */ |
3e43a32a MS |
3071 | xcoff_symfile_finish, /* finished with file, cleanup */ |
3072 | xcoff_symfile_offsets, /* xlate offsets ext->int form */ | |
3073 | default_symfile_segments, /* Get segment information from a file. */ | |
3074 | aix_process_linenos, | |
3075 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3076 | NULL, /* sym_probe_fns */ |
00b5771c | 3077 | &psym_functions |
c906108c SS |
3078 | }; |
3079 | ||
d5367fe1 JB |
3080 | /* Same as xcoff_get_n_import_files, but for core files. */ |
3081 | ||
3082 | static int | |
3083 | xcoff_get_core_n_import_files (bfd *abfd) | |
3084 | { | |
3085 | asection *sect = bfd_get_section_by_name (abfd, ".ldinfo"); | |
3086 | gdb_byte buf[4]; | |
3087 | file_ptr offset = 0; | |
3088 | int n_entries = 0; | |
3089 | ||
3090 | if (sect == NULL) | |
3091 | return -1; /* Not a core file. */ | |
3092 | ||
3093 | for (offset = 0; offset < bfd_get_section_size (sect);) | |
3094 | { | |
3095 | int next; | |
3096 | ||
3097 | n_entries++; | |
3098 | ||
3099 | if (!bfd_get_section_contents (abfd, sect, buf, offset, 4)) | |
3100 | return -1; | |
3101 | next = bfd_get_32 (abfd, buf); | |
3102 | if (next == 0) | |
3103 | break; /* This is the last entry. */ | |
3104 | offset += next; | |
3105 | } | |
3106 | ||
3107 | /* Return the number of entries, excluding the first one, which is | |
3108 | the path to the executable that produced this core file. */ | |
3109 | return n_entries - 1; | |
3110 | } | |
3111 | ||
3112 | /* Return the number of import files (shared libraries) that the given | |
3113 | BFD depends on. Return -1 if this number could not be computed. */ | |
3114 | ||
3115 | int | |
3116 | xcoff_get_n_import_files (bfd *abfd) | |
3117 | { | |
3118 | asection *sect = bfd_get_section_by_name (abfd, ".loader"); | |
3119 | gdb_byte buf[4]; | |
3120 | int l_nimpid; | |
3121 | ||
3122 | /* If the ".loader" section does not exist, the objfile is probably | |
3123 | not an executable. Might be a core file... */ | |
3124 | if (sect == NULL) | |
3125 | return xcoff_get_core_n_import_files (abfd); | |
3126 | ||
3127 | /* The number of entries in the Import Files Table is stored in | |
3128 | field l_nimpid. This field is always at offset 16, and is | |
3129 | always 4 bytes long. Read those 4 bytes. */ | |
3130 | ||
3131 | if (!bfd_get_section_contents (abfd, sect, buf, 16, 4)) | |
3132 | return -1; | |
3133 | l_nimpid = bfd_get_32 (abfd, buf); | |
3134 | ||
3135 | /* By convention, the first entry is the default LIBPATH value | |
3136 | to be used by the system loader, so it does not count towards | |
3137 | the number of import files. */ | |
3138 | return l_nimpid - 1; | |
3139 | } | |
3140 | ||
c906108c | 3141 | void |
fba45db2 | 3142 | _initialize_xcoffread (void) |
c906108c | 3143 | { |
c256e171 | 3144 | add_symtab_fns (bfd_target_xcoff_flavour, &xcoff_sym_fns); |
c906108c | 3145 | } |