Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
3666a048 | 2 | Copyright (C) 1986-2021 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> |
39ef2f62 | 31 | #include <algorithm> |
c906108c SS |
32 | |
33 | #include "coff/internal.h" | |
34 | #include "libcoff.h" /* FIXME, internal data from BFD */ | |
11ed25ac KB |
35 | #include "coff/xcoff.h" |
36 | #include "libxcoff.h" | |
c906108c | 37 | #include "coff/rs6000.h" |
63807e1d | 38 | #include "xcoffread.h" |
c906108c SS |
39 | |
40 | #include "symtab.h" | |
41 | #include "gdbtypes.h" | |
9ab9195f | 42 | /* FIXME: ezannoni/2004-02-13 Verify if the include below is really needed. */ |
c906108c SS |
43 | #include "symfile.h" |
44 | #include "objfiles.h" | |
0baae8db | 45 | #include "buildsym-legacy.h" |
c906108c SS |
46 | #include "stabsread.h" |
47 | #include "expression.h" | |
c906108c | 48 | #include "complaints.h" |
ccefe4c4 | 49 | #include "psympriv.h" |
c2a62a3d | 50 | #include "dwarf2/sect-names.h" |
70182375 | 51 | #include "dwarf2/public.h" |
c906108c SS |
52 | |
53 | #include "gdb-stabs.h" | |
54 | ||
55 | /* For interface with stabsread.c. */ | |
56 | #include "aout/stab_gnu.h" | |
57 | ||
c906108c SS |
58 | \f |
59 | /* We put a pointer to this structure in the read_symtab_private field | |
60 | of the psymtab. */ | |
61 | ||
c5aa993b JM |
62 | struct symloc |
63 | { | |
c906108c | 64 | |
c5aa993b | 65 | /* First symbol number for this file. */ |
c906108c | 66 | |
c5aa993b | 67 | int first_symnum; |
c906108c | 68 | |
c5aa993b JM |
69 | /* Number of symbols in the section of the symbol table devoted to |
70 | this file's symbols (actually, the section bracketed may contain | |
71 | more than just this file's symbols). If numsyms is 0, the only | |
72 | reason for this thing's existence is the dependency list. Nothing | |
73 | else will happen when it is read in. */ | |
c906108c | 74 | |
c5aa993b | 75 | int numsyms; |
c906108c | 76 | |
3e43a32a MS |
77 | /* Position of the start of the line number information for this |
78 | psymtab. */ | |
c5aa993b JM |
79 | unsigned int lineno_off; |
80 | }; | |
c906108c | 81 | |
581e13c1 | 82 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
83 | |
84 | static enum language psymtab_language = language_unknown; | |
c906108c | 85 | \f |
c5aa993b | 86 | |
581e13c1 | 87 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 88 | |
c5aa993b JM |
89 | struct coff_symbol |
90 | { | |
91 | char *c_name; | |
581e13c1 MS |
92 | int c_symnum; /* Symbol number of this entry. */ |
93 | int c_naux; /* 0 if syment only, 1 if syment + auxent. */ | |
086850b2 | 94 | CORE_ADDR c_value; |
c5aa993b JM |
95 | unsigned char c_sclass; |
96 | int c_secnum; | |
97 | unsigned int c_type; | |
98 | }; | |
c906108c | 99 | |
581e13c1 | 100 | /* Last function's saved coff symbol `cs'. */ |
c906108c SS |
101 | |
102 | static struct coff_symbol fcn_cs_saved; | |
103 | ||
104 | static bfd *symfile_bfd; | |
105 | ||
106 | /* Core address of start and end of text of current source file. | |
107 | This is calculated from the first function seen after a C_FILE | |
581e13c1 | 108 | symbol. */ |
c906108c SS |
109 | |
110 | ||
111 | static CORE_ADDR cur_src_end_addr; | |
112 | ||
113 | /* Core address of the end of the first object file. */ | |
114 | ||
115 | static CORE_ADDR first_object_file_end; | |
116 | ||
581e13c1 | 117 | /* Initial symbol-table-debug-string vector length. */ |
c906108c SS |
118 | |
119 | #define INITIAL_STABVECTOR_LENGTH 40 | |
120 | ||
c906108c SS |
121 | /* Size of a COFF symbol. I think it is always 18, so I'm not sure |
122 | there is any reason not to just use a #define, but might as well | |
123 | ask BFD for the size and store it here, I guess. */ | |
124 | ||
c5aa993b | 125 | static unsigned local_symesz; |
c906108c | 126 | |
02dc647e | 127 | struct xcoff_symfile_info |
c5aa993b | 128 | { |
02dc647e TT |
129 | file_ptr min_lineno_offset {}; /* Where in file lowest line#s are. */ |
130 | file_ptr max_lineno_offset {}; /* 1+last byte of line#s in file. */ | |
c906108c | 131 | |
c5aa993b | 132 | /* Pointer to the string table. */ |
02dc647e | 133 | char *strtbl = nullptr; |
c906108c | 134 | |
c5aa993b | 135 | /* Pointer to debug section. */ |
02dc647e | 136 | char *debugsec = nullptr; |
c906108c | 137 | |
c5aa993b | 138 | /* Pointer to the a.out symbol table. */ |
02dc647e | 139 | char *symtbl = nullptr; |
c906108c | 140 | |
c5aa993b | 141 | /* Number of symbols in symtbl. */ |
02dc647e | 142 | int symtbl_num_syms = 0; |
c906108c | 143 | |
c5aa993b | 144 | /* Offset in data section to TOC anchor. */ |
02dc647e | 145 | CORE_ADDR toc_offset = 0; |
c5aa993b | 146 | }; |
c906108c | 147 | |
02dc647e TT |
148 | /* Key for XCOFF-associated data. */ |
149 | ||
150 | static const struct objfile_key<xcoff_symfile_info> xcoff_objfile_data_key; | |
151 | ||
b8b98ad1 TT |
152 | /* Convenience macro to access the per-objfile XCOFF data. */ |
153 | ||
154 | #define XCOFF_DATA(objfile) \ | |
02dc647e | 155 | xcoff_objfile_data_key.get (objfile) |
b8b98ad1 | 156 | |
316a8b21 TG |
157 | /* XCOFF names for dwarf sections. There is no compressed sections. */ |
158 | ||
159 | static const struct dwarf2_debug_sections dwarf2_xcoff_names = { | |
160 | { ".dwinfo", NULL }, | |
161 | { ".dwabrev", NULL }, | |
162 | { ".dwline", NULL }, | |
163 | { ".dwloc", NULL }, | |
43988095 | 164 | { NULL, NULL }, /* debug_loclists */ |
33f914a1 DE |
165 | /* AIX XCOFF defines one, named DWARF section for macro debug information. |
166 | XLC does not generate debug_macinfo for DWARF4 and below. | |
167 | The section is assigned to debug_macro for DWARF5 and above. */ | |
168 | { NULL, NULL }, | |
169 | { ".dwmac", NULL }, | |
316a8b21 | 170 | { ".dwstr", NULL }, |
18a8505e | 171 | { NULL, NULL }, /* debug_str_offsets */ |
43988095 | 172 | { NULL, NULL }, /* debug_line_str */ |
316a8b21 | 173 | { ".dwrnges", NULL }, |
43988095 | 174 | { NULL, NULL }, /* debug_rnglists */ |
33f914a1 | 175 | { ".dwpbtyp", NULL }, |
3019eac3 | 176 | { NULL, NULL }, /* debug_addr */ |
316a8b21 TG |
177 | { ".dwframe", NULL }, |
178 | { NULL, NULL }, /* eh_frame */ | |
24d3216f | 179 | { NULL, NULL }, /* gdb_index */ |
927aa2e7 JK |
180 | { NULL, NULL }, /* debug_names */ |
181 | { NULL, NULL }, /* debug_aranges */ | |
24d3216f | 182 | 23 |
316a8b21 TG |
183 | }; |
184 | ||
23136709 KB |
185 | static void |
186 | bf_notfound_complaint (void) | |
187 | { | |
b98664d3 | 188 | complaint (_("line numbers off, `.bf' symbol not found")); |
23136709 | 189 | } |
c906108c | 190 | |
23136709 KB |
191 | static void |
192 | ef_complaint (int arg1) | |
193 | { | |
b98664d3 | 194 | complaint (_("Mismatched .ef symbol ignored starting at symnum %d"), arg1); |
23136709 | 195 | } |
c906108c | 196 | |
23136709 KB |
197 | static void |
198 | eb_complaint (int arg1) | |
199 | { | |
b98664d3 | 200 | complaint (_("Mismatched .eb symbol ignored starting at symnum %d"), arg1); |
23136709 | 201 | } |
c906108c | 202 | |
b15cc25c | 203 | static void xcoff_initial_scan (struct objfile *, symfile_add_flags); |
c906108c | 204 | |
8dddcb8f | 205 | static void scan_xcoff_symtab (minimal_symbol_reader &, |
7e9c0476 | 206 | psymtab_storage *partial_symtabs, |
8dddcb8f | 207 | struct objfile *); |
c906108c | 208 | |
a121b7c1 | 209 | static const char *xcoff_next_symbol_text (struct objfile *); |
c906108c | 210 | |
a14ed312 | 211 | static void record_include_begin (struct coff_symbol *); |
c906108c SS |
212 | |
213 | static void | |
a14ed312 KB |
214 | enter_line_range (struct subfile *, unsigned, unsigned, |
215 | CORE_ADDR, CORE_ADDR, unsigned *); | |
c906108c | 216 | |
a14ed312 | 217 | static void init_stringtab (bfd *, file_ptr, struct objfile *); |
c906108c | 218 | |
a14ed312 | 219 | static void xcoff_symfile_init (struct objfile *); |
c906108c | 220 | |
a14ed312 | 221 | static void xcoff_new_init (struct objfile *); |
c906108c | 222 | |
a14ed312 | 223 | static void xcoff_symfile_finish (struct objfile *); |
c906108c | 224 | |
a14ed312 | 225 | static char *coff_getfilename (union internal_auxent *, struct objfile *); |
c906108c | 226 | |
a14ed312 | 227 | static void read_symbol (struct internal_syment *, int); |
c906108c | 228 | |
a14ed312 | 229 | static int read_symbol_lineno (int); |
c906108c | 230 | |
470d5666 | 231 | static CORE_ADDR read_symbol_nvalue (int); |
c906108c | 232 | |
a14ed312 KB |
233 | static struct symbol *process_xcoff_symbol (struct coff_symbol *, |
234 | struct objfile *); | |
c906108c | 235 | |
891813be | 236 | static void read_xcoff_symtab (struct objfile *, legacy_psymtab *); |
c906108c SS |
237 | |
238 | #if 0 | |
a14ed312 | 239 | static void add_stab_to_list (char *, struct pending_stabs **); |
c906108c SS |
240 | #endif |
241 | ||
a14ed312 | 242 | static struct linetable *arrange_linetable (struct linetable *); |
c906108c | 243 | |
a14ed312 | 244 | static void record_include_end (struct coff_symbol *); |
c906108c | 245 | |
a14ed312 | 246 | static void process_linenos (CORE_ADDR, CORE_ADDR); |
c906108c | 247 | \f |
c5aa993b | 248 | |
c906108c SS |
249 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
250 | code. */ | |
a14ed312 KB |
251 | static int secnum_to_section (int, struct objfile *); |
252 | static asection *secnum_to_bfd_section (int, struct objfile *); | |
c906108c | 253 | |
c5aa993b JM |
254 | struct find_targ_sec_arg |
255 | { | |
256 | int targ_index; | |
257 | int *resultp; | |
258 | asection **bfd_sect; | |
b8fbeb18 | 259 | struct objfile *objfile; |
c5aa993b | 260 | }; |
c906108c | 261 | |
a14ed312 | 262 | static void find_targ_sec (bfd *, asection *, void *); |
c906108c | 263 | |
c5aa993b | 264 | static void |
4efb68b1 | 265 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 266 | { |
c5aa993b | 267 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
b8fbeb18 | 268 | struct objfile *objfile = args->objfile; |
a109c7c1 | 269 | |
c906108c SS |
270 | if (sect->target_index == args->targ_index) |
271 | { | |
272 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
fd361982 | 273 | if (bfd_section_flags (sect) & SEC_CODE) |
b8fbeb18 | 274 | *args->resultp = SECT_OFF_TEXT (objfile); |
fd361982 | 275 | else if (bfd_section_flags (sect) & SEC_LOAD) |
b8fbeb18 | 276 | *args->resultp = SECT_OFF_DATA (objfile); |
c906108c | 277 | else |
65cf3563 | 278 | *args->resultp = gdb_bfd_section_index (abfd, sect); |
c906108c SS |
279 | *args->bfd_sect = sect; |
280 | } | |
281 | } | |
282 | ||
ec92004f JB |
283 | /* Search all BFD sections for the section whose target_index is |
284 | equal to N_SCNUM. Set *BFD_SECT to that section. The section's | |
285 | associated index in the objfile's section_offset table is also | |
286 | stored in *SECNUM. | |
287 | ||
288 | If no match is found, *BFD_SECT is set to NULL, and *SECNUM | |
289 | is set to the text section's number. */ | |
a109c7c1 | 290 | |
ec92004f JB |
291 | static void |
292 | xcoff_secnum_to_sections (int n_scnum, struct objfile *objfile, | |
293 | asection **bfd_sect, int *secnum) | |
294 | { | |
c906108c | 295 | struct find_targ_sec_arg args; |
ec92004f JB |
296 | |
297 | args.targ_index = n_scnum; | |
298 | args.resultp = secnum; | |
299 | args.bfd_sect = bfd_sect; | |
b8fbeb18 | 300 | args.objfile = objfile; |
ec92004f JB |
301 | |
302 | *bfd_sect = NULL; | |
303 | *secnum = SECT_OFF_TEXT (objfile); | |
304 | ||
c906108c | 305 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
c906108c SS |
306 | } |
307 | ||
ec92004f JB |
308 | /* Return the section number (SECT_OFF_*) that N_SCNUM points to. */ |
309 | ||
310 | static int | |
311 | secnum_to_section (int n_scnum, struct objfile *objfile) | |
312 | { | |
313 | int secnum; | |
314 | asection *ignored; | |
315 | ||
316 | xcoff_secnum_to_sections (n_scnum, objfile, &ignored, &secnum); | |
317 | return secnum; | |
318 | } | |
319 | ||
320 | /* Return the BFD section that N_SCNUM points to. */ | |
321 | ||
c906108c | 322 | static asection * |
ec92004f | 323 | secnum_to_bfd_section (int n_scnum, struct objfile *objfile) |
c906108c | 324 | { |
ec92004f JB |
325 | int ignored; |
326 | asection *bfd_sect; | |
a109c7c1 | 327 | |
ec92004f JB |
328 | xcoff_secnum_to_sections (n_scnum, objfile, &bfd_sect, &ignored); |
329 | return bfd_sect; | |
c906108c SS |
330 | } |
331 | \f | |
581e13c1 | 332 | /* add a given stab string into given stab vector. */ |
c906108c SS |
333 | |
334 | #if 0 | |
335 | ||
336 | static void | |
fba45db2 | 337 | add_stab_to_list (char *stabname, struct pending_stabs **stabvector) |
c906108c | 338 | { |
c5aa993b JM |
339 | if (*stabvector == NULL) |
340 | { | |
341 | *stabvector = (struct pending_stabs *) | |
342 | xmalloc (sizeof (struct pending_stabs) + | |
343 | INITIAL_STABVECTOR_LENGTH * sizeof (char *)); | |
344 | (*stabvector)->count = 0; | |
345 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
346 | } | |
347 | else if ((*stabvector)->count >= (*stabvector)->length) | |
348 | { | |
349 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
350 | *stabvector = (struct pending_stabs *) | |
351 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + | |
3e43a32a | 352 | (*stabvector)->length * sizeof (char *)); |
c5aa993b JM |
353 | } |
354 | (*stabvector)->stab[(*stabvector)->count++] = stabname; | |
c906108c SS |
355 | } |
356 | ||
357 | #endif | |
c5aa993b | 358 | \f/* *INDENT-OFF* */ |
c906108c SS |
359 | /* Linenos are processed on a file-by-file basis. |
360 | ||
361 | Two reasons: | |
362 | ||
c5aa993b | 363 | 1) xlc (IBM's native c compiler) postpones static function code |
581e13c1 | 364 | emission to the end of a compilation unit. This way it can |
c5aa993b | 365 | determine if those functions (statics) are needed or not, and |
581e13c1 | 366 | can do some garbage collection (I think). This makes line |
c5aa993b JM |
367 | numbers and corresponding addresses unordered, and we end up |
368 | with a line table like: | |
369 | ||
370 | ||
371 | lineno addr | |
372 | foo() 10 0x100 | |
373 | 20 0x200 | |
374 | 30 0x300 | |
375 | ||
376 | foo3() 70 0x400 | |
377 | 80 0x500 | |
378 | 90 0x600 | |
379 | ||
380 | static foo2() | |
381 | 40 0x700 | |
382 | 50 0x800 | |
383 | 60 0x900 | |
384 | ||
385 | and that breaks gdb's binary search on line numbers, if the | |
581e13c1 | 386 | above table is not sorted on line numbers. And that sort |
c5aa993b JM |
387 | should be on function based, since gcc can emit line numbers |
388 | like: | |
389 | ||
390 | 10 0x100 - for the init/test part of a for stmt. | |
391 | 20 0x200 | |
392 | 30 0x300 | |
393 | 10 0x400 - for the increment part of a for stmt. | |
394 | ||
581e13c1 | 395 | arrange_linetable() will do this sorting. |
c5aa993b JM |
396 | |
397 | 2) aix symbol table might look like: | |
398 | ||
399 | c_file // beginning of a new file | |
400 | .bi // beginning of include file | |
401 | .ei // end of include file | |
402 | .bi | |
403 | .ei | |
404 | ||
405 | basically, .bi/.ei pairs do not necessarily encapsulate | |
581e13c1 | 406 | their scope. They need to be recorded, and processed later |
c5aa993b JM |
407 | on when we come the end of the compilation unit. |
408 | Include table (inclTable) and process_linenos() handle | |
409 | that. */ | |
9846de1b | 410 | /* *INDENT-ON* */ |
c906108c | 411 | |
c5aa993b | 412 | |
581e13c1 MS |
413 | /* Given a line table with function entries are marked, arrange its |
414 | functions in ascending order and strip off function entry markers | |
415 | and return it in a newly created table. If the old one is good | |
416 | enough, return the old one. */ | |
c906108c SS |
417 | /* FIXME: I think all this stuff can be replaced by just passing |
418 | sort_linevec = 1 to end_symtab. */ | |
419 | ||
420 | static struct linetable * | |
b095261a | 421 | arrange_linetable (struct linetable *oldLineTb) |
c906108c | 422 | { |
c5aa993b JM |
423 | int ii, jj, newline, /* new line count */ |
424 | function_count; /* # of functions */ | |
c906108c | 425 | |
c5aa993b JM |
426 | struct linetable_entry *fentry; /* function entry vector */ |
427 | int fentry_size; /* # of function entries */ | |
428 | struct linetable *newLineTb; /* new line table */ | |
a85c52f2 | 429 | int extra_lines = 0; |
c906108c SS |
430 | |
431 | #define NUM_OF_FUNCTIONS 20 | |
432 | ||
433 | fentry_size = NUM_OF_FUNCTIONS; | |
8d749320 | 434 | fentry = XNEWVEC (struct linetable_entry, fentry_size); |
c906108c | 435 | |
c5aa993b JM |
436 | for (function_count = 0, ii = 0; ii < oldLineTb->nitems; ++ii) |
437 | { | |
8c95582d AB |
438 | if (oldLineTb->item[ii].is_stmt == 0) |
439 | continue; | |
440 | ||
c5aa993b | 441 | if (oldLineTb->item[ii].line == 0) |
581e13c1 | 442 | { /* Function entry found. */ |
c5aa993b | 443 | if (function_count >= fentry_size) |
581e13c1 | 444 | { /* Make sure you have room. */ |
c5aa993b JM |
445 | fentry_size *= 2; |
446 | fentry = (struct linetable_entry *) | |
3e43a32a MS |
447 | xrealloc (fentry, |
448 | fentry_size * sizeof (struct linetable_entry)); | |
c5aa993b JM |
449 | } |
450 | fentry[function_count].line = ii; | |
8c95582d | 451 | fentry[function_count].is_stmt = 1; |
c5aa993b JM |
452 | fentry[function_count].pc = oldLineTb->item[ii].pc; |
453 | ++function_count; | |
a85c52f2 UW |
454 | |
455 | /* If the function was compiled with XLC, we may have to add an | |
dda83cd7 | 456 | extra line entry later. Reserve space for that. */ |
a85c52f2 UW |
457 | if (ii + 1 < oldLineTb->nitems |
458 | && oldLineTb->item[ii].pc != oldLineTb->item[ii + 1].pc) | |
459 | extra_lines++; | |
c5aa993b | 460 | } |
c906108c | 461 | } |
c906108c | 462 | |
c5aa993b JM |
463 | if (function_count == 0) |
464 | { | |
b8c9b27d | 465 | xfree (fentry); |
c5aa993b JM |
466 | return oldLineTb; |
467 | } | |
c906108c | 468 | else if (function_count > 1) |
39ef2f62 CB |
469 | std::sort (fentry, fentry + function_count, |
470 | [] (const linetable_entry <e1, const linetable_entry& lte2) | |
dda83cd7 | 471 | { return lte1.pc < lte2.pc; }); |
c906108c | 472 | |
581e13c1 | 473 | /* Allocate a new line table. */ |
c906108c SS |
474 | newLineTb = (struct linetable *) |
475 | xmalloc | |
c5aa993b | 476 | (sizeof (struct linetable) + |
a85c52f2 | 477 | (oldLineTb->nitems - function_count + extra_lines) * sizeof (struct linetable_entry)); |
c906108c | 478 | |
581e13c1 MS |
479 | /* If line table does not start with a function beginning, copy up until |
480 | a function begin. */ | |
c906108c SS |
481 | |
482 | newline = 0; | |
483 | if (oldLineTb->item[0].line != 0) | |
c5aa993b JM |
484 | for (newline = 0; |
485 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
c906108c SS |
486 | newLineTb->item[newline] = oldLineTb->item[newline]; |
487 | ||
581e13c1 | 488 | /* Now copy function lines one by one. */ |
c906108c | 489 | |
c5aa993b JM |
490 | for (ii = 0; ii < function_count; ++ii) |
491 | { | |
a85c52f2 | 492 | /* If the function was compiled with XLC, we may have to add an |
dda83cd7 | 493 | extra line to cover the function prologue. */ |
a85c52f2 UW |
494 | jj = fentry[ii].line; |
495 | if (jj + 1 < oldLineTb->nitems | |
496 | && oldLineTb->item[jj].pc != oldLineTb->item[jj + 1].pc) | |
497 | { | |
498 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
499 | newLineTb->item[newline].line = oldLineTb->item[jj + 1].line; | |
500 | newline++; | |
501 | } | |
502 | ||
c5aa993b JM |
503 | for (jj = fentry[ii].line + 1; |
504 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
505 | ++jj, ++newline) | |
506 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
507 | } | |
b8c9b27d | 508 | xfree (fentry); |
a85c52f2 UW |
509 | /* The number of items in the line table must include these |
510 | extra lines which were added in case of XLC compiled functions. */ | |
511 | newLineTb->nitems = oldLineTb->nitems - function_count + extra_lines; | |
c5aa993b JM |
512 | return newLineTb; |
513 | } | |
c906108c SS |
514 | |
515 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
581e13c1 | 516 | following `IncludeChain'. At the end of each symtab (end_symtab), |
c906108c | 517 | we will determine if we should create additional symtab's to |
581e13c1 | 518 | represent if (the include files. */ |
c906108c SS |
519 | |
520 | ||
c5aa993b JM |
521 | typedef struct _inclTable |
522 | { | |
523 | char *name; /* include filename */ | |
c906108c SS |
524 | |
525 | /* Offsets to the line table. end points to the last entry which is | |
526 | part of this include file. */ | |
c5aa993b JM |
527 | int begin, end; |
528 | ||
c906108c | 529 | struct subfile *subfile; |
581e13c1 | 530 | unsigned funStartLine; /* Start line # of its function. */ |
c5aa993b JM |
531 | } |
532 | InclTable; | |
c906108c SS |
533 | |
534 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
c5aa993b JM |
535 | static InclTable *inclTable; /* global include table */ |
536 | static int inclIndx; /* last entry to table */ | |
537 | static int inclLength; /* table length */ | |
538 | static int inclDepth; /* nested include depth */ | |
c906108c | 539 | |
a14ed312 | 540 | static void allocate_include_entry (void); |
c906108c SS |
541 | |
542 | static void | |
fba45db2 | 543 | record_include_begin (struct coff_symbol *cs) |
c906108c SS |
544 | { |
545 | if (inclDepth) | |
546 | { | |
547 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
dda83cd7 | 548 | of course, but in corresponding .s files.). */ |
c906108c SS |
549 | |
550 | /* This can happen with old versions of GCC. | |
dda83cd7 SM |
551 | GCC 2.3.3-930426 does not exhibit this on a test case which |
552 | a user said produced the message for him. */ | |
b98664d3 | 553 | complaint (_("Nested C_BINCL symbols")); |
c906108c SS |
554 | } |
555 | ++inclDepth; | |
556 | ||
557 | allocate_include_entry (); | |
558 | ||
c5aa993b JM |
559 | inclTable[inclIndx].name = cs->c_name; |
560 | inclTable[inclIndx].begin = cs->c_value; | |
c906108c SS |
561 | } |
562 | ||
563 | static void | |
fba45db2 | 564 | record_include_end (struct coff_symbol *cs) |
c906108c | 565 | { |
c5aa993b | 566 | InclTable *pTbl; |
c906108c SS |
567 | |
568 | if (inclDepth == 0) | |
569 | { | |
b98664d3 | 570 | complaint (_("Mismatched C_BINCL/C_EINCL pair")); |
c906108c SS |
571 | } |
572 | ||
573 | allocate_include_entry (); | |
574 | ||
c5aa993b | 575 | pTbl = &inclTable[inclIndx]; |
c906108c SS |
576 | pTbl->end = cs->c_value; |
577 | ||
578 | --inclDepth; | |
579 | ++inclIndx; | |
580 | } | |
581 | ||
582 | static void | |
fba45db2 | 583 | allocate_include_entry (void) |
c906108c SS |
584 | { |
585 | if (inclTable == NULL) | |
586 | { | |
8d749320 | 587 | inclTable = XCNEWVEC (InclTable, INITIAL_INCLUDE_TABLE_LENGTH); |
c906108c SS |
588 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; |
589 | inclIndx = 0; | |
590 | } | |
591 | else if (inclIndx >= inclLength) | |
592 | { | |
593 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
8d749320 | 594 | inclTable = XRESIZEVEC (InclTable, inclTable, inclLength); |
c5aa993b JM |
595 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, |
596 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
c906108c SS |
597 | } |
598 | } | |
599 | ||
600 | /* Global variable to pass the psymtab down to all the routines involved | |
601 | in psymtab to symtab processing. */ | |
891813be | 602 | static legacy_psymtab *this_symtab_psymtab; |
c906108c | 603 | |
5c80ed9d TT |
604 | /* Objfile related to this_symtab_psymtab; set at the same time. */ |
605 | static struct objfile *this_symtab_objfile; | |
606 | ||
c906108c | 607 | /* given the start and end addresses of a compilation unit (or a csect, |
581e13c1 | 608 | at times) process its lines and create appropriate line vectors. */ |
c906108c SS |
609 | |
610 | static void | |
fba45db2 | 611 | process_linenos (CORE_ADDR start, CORE_ADDR end) |
c906108c SS |
612 | { |
613 | int offset, ii; | |
b8b98ad1 | 614 | file_ptr max_offset |
5c80ed9d | 615 | = XCOFF_DATA (this_symtab_objfile)->max_lineno_offset; |
c906108c SS |
616 | |
617 | /* subfile structure for the main compilation unit. */ | |
618 | struct subfile main_subfile; | |
619 | ||
620 | /* In the main source file, any time we see a function entry, we | |
621 | reset this variable to function's absolute starting line number. | |
622 | All the following line numbers in the function are relative to | |
623 | this, and we record absolute line numbers in record_line(). */ | |
624 | ||
625 | unsigned int main_source_baseline = 0; | |
626 | ||
627 | unsigned *firstLine; | |
628 | ||
629 | offset = | |
c5aa993b | 630 | ((struct symloc *) this_symtab_psymtab->read_symtab_private)->lineno_off; |
c906108c SS |
631 | if (offset == 0) |
632 | goto return_after_cleanup; | |
633 | ||
634 | memset (&main_subfile, '\0', sizeof (main_subfile)); | |
635 | ||
636 | if (inclIndx == 0) | |
581e13c1 MS |
637 | /* All source lines were in the main source file. None in include |
638 | files. */ | |
c906108c | 639 | |
c5aa993b JM |
640 | enter_line_range (&main_subfile, offset, 0, start, end, |
641 | &main_source_baseline); | |
c906108c SS |
642 | |
643 | else | |
644 | { | |
645 | /* There was source with line numbers in include files. */ | |
7a78ae4e ND |
646 | |
647 | int linesz = | |
5c80ed9d | 648 | coff_data (this_symtab_objfile->obfd)->local_linesz; |
c906108c | 649 | main_source_baseline = 0; |
7a78ae4e | 650 | |
c5aa993b | 651 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c SS |
652 | { |
653 | struct subfile *tmpSubfile; | |
654 | ||
655 | /* If there is main file source before include file, enter it. */ | |
656 | if (offset < inclTable[ii].begin) | |
657 | { | |
658 | enter_line_range | |
7a78ae4e | 659 | (&main_subfile, offset, inclTable[ii].begin - linesz, |
c906108c SS |
660 | start, 0, &main_source_baseline); |
661 | } | |
662 | ||
46212e0b | 663 | if (strcmp (inclTable[ii].name, get_last_source_file ()) == 0) |
c5933f6d | 664 | { |
dda83cd7 SM |
665 | /* The entry in the include table refers to the main source |
666 | file. Add the lines to the main subfile. */ | |
c5933f6d JB |
667 | |
668 | main_source_baseline = inclTable[ii].funStartLine; | |
669 | enter_line_range | |
670 | (&main_subfile, inclTable[ii].begin, inclTable[ii].end, | |
671 | start, 0, &main_source_baseline); | |
672 | inclTable[ii].subfile = &main_subfile; | |
673 | } | |
674 | else | |
675 | { | |
c5933f6d | 676 | /* Have a new subfile for the include file. */ |
c906108c | 677 | |
8d749320 | 678 | tmpSubfile = inclTable[ii].subfile = XNEW (struct subfile); |
c906108c | 679 | |
c5933f6d JB |
680 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
681 | firstLine = &(inclTable[ii].funStartLine); | |
682 | ||
683 | /* Enter include file's lines now. */ | |
684 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
685 | inclTable[ii].end, start, 0, firstLine); | |
686 | } | |
c906108c SS |
687 | |
688 | if (offset <= inclTable[ii].end) | |
7a78ae4e | 689 | offset = inclTable[ii].end + linesz; |
c906108c SS |
690 | } |
691 | ||
692 | /* All the include files' line have been processed at this point. Now, | |
dda83cd7 | 693 | enter remaining lines of the main file, if any left. */ |
7a78ae4e | 694 | if (offset < max_offset + 1 - linesz) |
c906108c | 695 | { |
c5aa993b | 696 | enter_line_range (&main_subfile, offset, 0, start, end, |
c906108c SS |
697 | &main_source_baseline); |
698 | } | |
699 | } | |
700 | ||
701 | /* Process main file's line numbers. */ | |
702 | if (main_subfile.line_vector) | |
703 | { | |
704 | struct linetable *lineTb, *lv; | |
705 | ||
706 | lv = main_subfile.line_vector; | |
707 | ||
581e13c1 | 708 | /* Line numbers are not necessarily ordered. xlc compilation will |
dda83cd7 | 709 | put static function to the end. */ |
c906108c | 710 | |
3c65e5b3 | 711 | struct subfile *current_subfile = get_current_subfile (); |
c906108c SS |
712 | lineTb = arrange_linetable (lv); |
713 | if (lv == lineTb) | |
714 | { | |
715 | current_subfile->line_vector = (struct linetable *) | |
716 | xrealloc (lv, (sizeof (struct linetable) | |
717 | + lv->nitems * sizeof (struct linetable_entry))); | |
718 | } | |
719 | else | |
720 | { | |
b8c9b27d | 721 | xfree (lv); |
c906108c SS |
722 | current_subfile->line_vector = lineTb; |
723 | } | |
724 | ||
c5aa993b | 725 | current_subfile->line_vector_length = |
c906108c SS |
726 | current_subfile->line_vector->nitems; |
727 | } | |
728 | ||
729 | /* Now, process included files' line numbers. */ | |
730 | ||
c5aa993b | 731 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c | 732 | { |
c5933f6d | 733 | if (inclTable[ii].subfile != ((struct subfile *) &main_subfile) |
dda83cd7 | 734 | && (inclTable[ii].subfile)->line_vector) /* Useless if!!! |
3e43a32a | 735 | FIXMEmgo */ |
c906108c SS |
736 | { |
737 | struct linetable *lineTb, *lv; | |
738 | ||
739 | lv = (inclTable[ii].subfile)->line_vector; | |
740 | ||
581e13c1 MS |
741 | /* Line numbers are not necessarily ordered. xlc compilation will |
742 | put static function to the end. */ | |
c906108c SS |
743 | |
744 | lineTb = arrange_linetable (lv); | |
745 | ||
746 | push_subfile (); | |
747 | ||
748 | /* For the same include file, we might want to have more than one | |
749 | subfile. This happens if we have something like: | |
750 | ||
c5aa993b JM |
751 | ...... |
752 | #include "foo.h" | |
753 | ...... | |
754 | #include "foo.h" | |
755 | ...... | |
c906108c | 756 | |
581e13c1 | 757 | while foo.h including code in it. (stupid but possible) |
c906108c SS |
758 | Since start_subfile() looks at the name and uses an |
759 | existing one if finds, we need to provide a fake name and | |
760 | fool it. */ | |
761 | ||
762 | #if 0 | |
4d663531 | 763 | start_subfile (inclTable[ii].name); |
c906108c SS |
764 | #else |
765 | { | |
766 | /* Pick a fake name that will produce the same results as this | |
767 | one when passed to deduce_language_from_filename. Kludge on | |
768 | top of kludge. */ | |
a121b7c1 | 769 | const char *fakename = strrchr (inclTable[ii].name, '.'); |
a109c7c1 | 770 | |
c906108c SS |
771 | if (fakename == NULL) |
772 | fakename = " ?"; | |
4d663531 | 773 | start_subfile (fakename); |
3c65e5b3 | 774 | xfree (get_current_subfile ()->name); |
c906108c | 775 | } |
3c65e5b3 | 776 | struct subfile *current_subfile = get_current_subfile (); |
c2d11a7d | 777 | current_subfile->name = xstrdup (inclTable[ii].name); |
c906108c SS |
778 | #endif |
779 | ||
780 | if (lv == lineTb) | |
781 | { | |
782 | current_subfile->line_vector = | |
783 | (struct linetable *) xrealloc | |
c5aa993b JM |
784 | (lv, (sizeof (struct linetable) |
785 | + lv->nitems * sizeof (struct linetable_entry))); | |
c906108c SS |
786 | |
787 | } | |
788 | else | |
789 | { | |
b8c9b27d | 790 | xfree (lv); |
c906108c SS |
791 | current_subfile->line_vector = lineTb; |
792 | } | |
793 | ||
c5aa993b | 794 | current_subfile->line_vector_length = |
c906108c | 795 | current_subfile->line_vector->nitems; |
4d663531 | 796 | start_subfile (pop_subfile ()); |
c906108c SS |
797 | } |
798 | } | |
799 | ||
c5aa993b | 800 | return_after_cleanup: |
c906108c SS |
801 | |
802 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
803 | inclIndx = 0; | |
c906108c SS |
804 | } |
805 | ||
c295b2e5 | 806 | static void |
f56ce883 | 807 | aix_process_linenos (struct objfile *objfile) |
c906108c | 808 | { |
316a8b21 TG |
809 | /* There is no linenos to read if there are only dwarf info. */ |
810 | if (this_symtab_psymtab == NULL) | |
811 | return; | |
812 | ||
581e13c1 | 813 | /* Process line numbers and enter them into line vector. */ |
2c99ee5c | 814 | process_linenos (get_last_source_start_addr (), cur_src_end_addr); |
c906108c SS |
815 | } |
816 | ||
817 | ||
818 | /* Enter a given range of lines into the line vector. | |
819 | can be called in the following two ways: | |
3e43a32a | 820 | enter_line_range (subfile, beginoffset, endoffset, |
dda83cd7 | 821 | startaddr, 0, firstLine) or |
3e43a32a | 822 | enter_line_range (subfile, beginoffset, 0, |
dda83cd7 | 823 | startaddr, endaddr, firstLine) |
c906108c SS |
824 | |
825 | endoffset points to the last line table entry that we should pay | |
826 | attention to. */ | |
827 | ||
828 | static void | |
3e43a32a MS |
829 | enter_line_range (struct subfile *subfile, unsigned beginoffset, |
830 | unsigned endoffset, /* offsets to line table */ | |
fba45db2 KB |
831 | CORE_ADDR startaddr, /* offsets to line table */ |
832 | CORE_ADDR endaddr, unsigned *firstLine) | |
c906108c | 833 | { |
5c80ed9d | 834 | struct objfile *objfile = this_symtab_objfile; |
08feed99 | 835 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
836 | unsigned int curoffset; |
837 | CORE_ADDR addr; | |
7a78ae4e | 838 | void *ext_lnno; |
c906108c SS |
839 | struct internal_lineno int_lnno; |
840 | unsigned int limit_offset; | |
841 | bfd *abfd; | |
7a78ae4e | 842 | int linesz; |
c906108c SS |
843 | |
844 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) | |
845 | return; | |
846 | curoffset = beginoffset; | |
b8b98ad1 | 847 | limit_offset = XCOFF_DATA (objfile)->max_lineno_offset; |
c906108c SS |
848 | |
849 | if (endoffset != 0) | |
850 | { | |
851 | if (endoffset >= limit_offset) | |
852 | { | |
b98664d3 | 853 | complaint (_("Bad line table offset in C_EINCL directive")); |
c906108c SS |
854 | return; |
855 | } | |
856 | limit_offset = endoffset; | |
857 | } | |
858 | else | |
859 | limit_offset -= 1; | |
7a78ae4e | 860 | |
fbf65064 | 861 | abfd = objfile->obfd; |
7a78ae4e ND |
862 | linesz = coff_data (abfd)->local_linesz; |
863 | ext_lnno = alloca (linesz); | |
c906108c SS |
864 | |
865 | while (curoffset <= limit_offset) | |
866 | { | |
867 | bfd_seek (abfd, curoffset, SEEK_SET); | |
3a42e9d0 | 868 | bfd_bread (ext_lnno, linesz, abfd); |
7a78ae4e | 869 | bfd_coff_swap_lineno_in (abfd, ext_lnno, &int_lnno); |
c906108c SS |
870 | |
871 | /* Find the address this line represents. */ | |
872 | addr = (int_lnno.l_lnno | |
873 | ? int_lnno.l_addr.l_paddr | |
874 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
b3b3bada | 875 | addr += objfile->text_section_offset (); |
c906108c SS |
876 | |
877 | if (addr < startaddr || (endaddr && addr >= endaddr)) | |
878 | return; | |
879 | ||
880 | if (int_lnno.l_lnno == 0) | |
881 | { | |
882 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
fbf65064 | 883 | record_line (subfile, 0, gdbarch_addr_bits_remove (gdbarch, addr)); |
c906108c SS |
884 | --(*firstLine); |
885 | } | |
886 | else | |
fbf65064 UW |
887 | record_line (subfile, *firstLine + int_lnno.l_lnno, |
888 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
7a78ae4e | 889 | curoffset += linesz; |
c906108c SS |
890 | } |
891 | } | |
892 | ||
893 | ||
894 | /* Save the vital information for use when closing off the current file. | |
895 | NAME is the file name the symbols came from, START_ADDR is the first | |
896 | text address for the file, and SIZE is the number of bytes of text. */ | |
897 | ||
898 | #define complete_symtab(name, start_addr) { \ | |
46212e0b | 899 | set_last_source_file (name); \ |
2c99ee5c | 900 | set_last_source_start_addr (start_addr); \ |
c906108c SS |
901 | } |
902 | ||
903 | ||
904 | /* Refill the symbol table input buffer | |
905 | and set the variables that control fetching entries from it. | |
906 | Reports an error if no data available. | |
907 | This function can read past the end of the symbol table | |
908 | (into the string table) but this does no harm. */ | |
909 | ||
8dddcb8f | 910 | /* Create a new minimal symbol (using record_with_info). |
ec92004f | 911 | |
4d1eb6b4 | 912 | Creation of all new minimal symbols should go through this function |
8dddcb8f | 913 | rather than calling the various record functions in order |
4d1eb6b4 JB |
914 | to make sure that all symbol addresses get properly relocated. |
915 | ||
ec92004f JB |
916 | Arguments are: |
917 | ||
918 | NAME - the symbol's name (but if NAME starts with a period, that | |
919 | leading period is discarded). | |
4d1eb6b4 JB |
920 | ADDRESS - the symbol's address, prior to relocation. This function |
921 | relocates the address before recording the minimal symbol. | |
ec92004f JB |
922 | MS_TYPE - the symbol's type. |
923 | N_SCNUM - the symbol's XCOFF section number. | |
924 | OBJFILE - the objfile associated with the minimal symbol. */ | |
c906108c | 925 | |
ec92004f | 926 | static void |
8dddcb8f TT |
927 | record_minimal_symbol (minimal_symbol_reader &reader, |
928 | const char *name, CORE_ADDR address, | |
ec92004f JB |
929 | enum minimal_symbol_type ms_type, |
930 | int n_scnum, | |
931 | struct objfile *objfile) | |
932 | { | |
ec92004f JB |
933 | if (name[0] == '.') |
934 | ++name; | |
935 | ||
8dddcb8f TT |
936 | reader.record_with_info (name, address, ms_type, |
937 | secnum_to_section (n_scnum, objfile)); | |
ec92004f | 938 | } |
c906108c | 939 | |
581e13c1 MS |
940 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
941 | nested. At any given time, a symbol can only be in one static block. | |
942 | This is the base address of current static block, zero if non exists. */ | |
c5aa993b | 943 | |
c906108c SS |
944 | static int static_block_base = 0; |
945 | ||
946 | /* Section number for the current static block. */ | |
947 | ||
948 | static int static_block_section = -1; | |
949 | ||
581e13c1 | 950 | /* true if space for symbol name has been allocated. */ |
c906108c SS |
951 | |
952 | static int symname_alloced = 0; | |
953 | ||
954 | /* Next symbol to read. Pointer into raw seething symbol table. */ | |
955 | ||
956 | static char *raw_symbol; | |
957 | ||
958 | /* This is the function which stabsread.c calls to get symbol | |
959 | continuations. */ | |
960 | ||
a121b7c1 | 961 | static const char * |
fba45db2 | 962 | xcoff_next_symbol_text (struct objfile *objfile) |
c906108c SS |
963 | { |
964 | struct internal_syment symbol; | |
a121b7c1 | 965 | const char *retval; |
a109c7c1 | 966 | |
581e13c1 | 967 | /* FIXME: is this the same as the passed arg? */ |
5c80ed9d TT |
968 | if (this_symtab_objfile) |
969 | objfile = this_symtab_objfile; | |
c906108c SS |
970 | |
971 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); | |
972 | if (symbol.n_zeroes) | |
973 | { | |
b98664d3 | 974 | complaint (_("Unexpected symbol continuation")); |
c906108c SS |
975 | |
976 | /* Return something which points to '\0' and hope the symbol reading | |
dda83cd7 | 977 | code does something reasonable. */ |
c906108c SS |
978 | retval = ""; |
979 | } | |
980 | else if (symbol.n_sclass & 0x80) | |
981 | { | |
b8b98ad1 | 982 | retval = XCOFF_DATA (objfile)->debugsec + symbol.n_offset; |
3e43a32a | 983 | raw_symbol += coff_data (objfile->obfd)->local_symesz; |
c906108c SS |
984 | ++symnum; |
985 | } | |
986 | else | |
987 | { | |
b98664d3 | 988 | complaint (_("Unexpected symbol continuation")); |
c906108c SS |
989 | |
990 | /* Return something which points to '\0' and hope the symbol reading | |
dda83cd7 | 991 | code does something reasonable. */ |
c906108c SS |
992 | retval = ""; |
993 | } | |
994 | return retval; | |
995 | } | |
996 | ||
997 | /* Read symbols for a given partial symbol table. */ | |
998 | ||
999 | static void | |
891813be | 1000 | read_xcoff_symtab (struct objfile *objfile, legacy_psymtab *pst) |
c906108c | 1001 | { |
c906108c | 1002 | bfd *abfd = objfile->obfd; |
581e13c1 | 1003 | char *raw_auxptr; /* Pointer to first raw aux entry for sym. */ |
02dc647e | 1004 | struct xcoff_symfile_info *xcoff = XCOFF_DATA (objfile); |
b8b98ad1 TT |
1005 | char *strtbl = xcoff->strtbl; |
1006 | char *debugsec = xcoff->debugsec; | |
554d387d | 1007 | const char *debugfmt = bfd_xcoff_is_xcoff64 (abfd) ? "XCOFF64" : "XCOFF"; |
c906108c SS |
1008 | |
1009 | struct internal_syment symbol[1]; | |
1010 | union internal_auxent main_aux; | |
1011 | struct coff_symbol cs[1]; | |
1012 | CORE_ADDR file_start_addr = 0; | |
1013 | CORE_ADDR file_end_addr = 0; | |
1014 | ||
1015 | int next_file_symnum = -1; | |
1016 | unsigned int max_symnum; | |
1017 | int just_started = 1; | |
1018 | int depth = 0; | |
086850b2 | 1019 | CORE_ADDR fcn_start_addr = 0; |
b9718991 | 1020 | enum language pst_symtab_language; |
c906108c | 1021 | |
238ae9af | 1022 | struct coff_symbol fcn_stab_saved = { 0 }; |
c906108c | 1023 | |
581e13c1 | 1024 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
3672b1be | 1025 | union internal_auxent fcn_aux_saved = main_aux; |
fe978cb0 | 1026 | struct context_stack *newobj; |
c906108c | 1027 | |
9a1e3f00 | 1028 | const char *filestring = pst->filename; /* Name of the current file. */ |
c906108c | 1029 | |
40301fb7 | 1030 | const char *last_csect_name; /* Last seen csect's name. */ |
c906108c SS |
1031 | |
1032 | this_symtab_psymtab = pst; | |
5c80ed9d | 1033 | this_symtab_objfile = objfile; |
c906108c SS |
1034 | |
1035 | /* Get the appropriate COFF "constants" related to the file we're | |
581e13c1 | 1036 | handling. */ |
c906108c SS |
1037 | local_symesz = coff_data (abfd)->local_symesz; |
1038 | ||
46212e0b | 1039 | set_last_source_file (NULL); |
c906108c | 1040 | last_csect_name = 0; |
b9718991 | 1041 | pst_symtab_language = deduce_language_from_filename (filestring); |
c906108c SS |
1042 | |
1043 | start_stabs (); | |
cafb3438 | 1044 | start_symtab (objfile, filestring, NULL, file_start_addr, |
b9718991 | 1045 | pst_symtab_language); |
7a78ae4e | 1046 | record_debugformat (debugfmt); |
c5aa993b | 1047 | symnum = ((struct symloc *) pst->read_symtab_private)->first_symnum; |
c906108c | 1048 | max_symnum = |
c5aa993b | 1049 | symnum + ((struct symloc *) pst->read_symtab_private)->numsyms; |
c906108c SS |
1050 | first_object_file_end = 0; |
1051 | ||
b8b98ad1 | 1052 | raw_symbol = xcoff->symtbl + symnum * local_symesz; |
c906108c SS |
1053 | |
1054 | while (symnum < max_symnum) | |
1055 | { | |
c906108c SS |
1056 | QUIT; /* make this command interruptable. */ |
1057 | ||
1058 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
581e13c1 | 1059 | /* read one symbol into `cs' structure. After processing the |
dda83cd7 SM |
1060 | whole symbol table, only string table will be kept in memory, |
1061 | symbol table and debug section of xcoff will be freed. Thus | |
1062 | we can mark symbols with names in string table as | |
1063 | `alloced'. */ | |
c906108c SS |
1064 | { |
1065 | int ii; | |
1066 | ||
1067 | /* Swap and align the symbol into a reasonable C structure. */ | |
1068 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1069 | ||
1070 | cs->c_symnum = symnum; | |
1071 | cs->c_naux = symbol->n_numaux; | |
1072 | if (symbol->n_zeroes) | |
1073 | { | |
1074 | symname_alloced = 0; | |
1075 | /* We must use the original, unswapped, name here so the name field | |
1076 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1077 | we use the new field, it gets overwritten for each symbol. */ | |
c5aa993b | 1078 | cs->c_name = ((struct external_syment *) raw_symbol)->e.e_name; |
c906108c SS |
1079 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1080 | '\0'-terminated. */ | |
1081 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1082 | { | |
1083 | char *p; | |
a109c7c1 | 1084 | |
224c3ddb SM |
1085 | p = (char *) obstack_alloc (&objfile->objfile_obstack, |
1086 | E_SYMNMLEN + 1); | |
c906108c SS |
1087 | strncpy (p, cs->c_name, E_SYMNMLEN); |
1088 | p[E_SYMNMLEN] = '\0'; | |
1089 | cs->c_name = p; | |
1090 | symname_alloced = 1; | |
1091 | } | |
1092 | } | |
1093 | else if (symbol->n_sclass & 0x80) | |
1094 | { | |
1095 | cs->c_name = debugsec + symbol->n_offset; | |
1096 | symname_alloced = 0; | |
1097 | } | |
1098 | else | |
1099 | { | |
1100 | /* in string table */ | |
c5aa993b | 1101 | cs->c_name = strtbl + (int) symbol->n_offset; |
c906108c SS |
1102 | symname_alloced = 1; |
1103 | } | |
1104 | cs->c_value = symbol->n_value; | |
1105 | cs->c_sclass = symbol->n_sclass; | |
1106 | cs->c_secnum = symbol->n_scnum; | |
c5aa993b | 1107 | cs->c_type = (unsigned) symbol->n_type; |
c906108c | 1108 | |
7a78ae4e | 1109 | raw_symbol += local_symesz; |
c906108c SS |
1110 | ++symnum; |
1111 | ||
1112 | /* Save addr of first aux entry. */ | |
1113 | raw_auxptr = raw_symbol; | |
1114 | ||
1115 | /* Skip all the auxents associated with this symbol. */ | |
1116 | for (ii = symbol->n_numaux; ii; --ii) | |
1117 | { | |
1118 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1119 | ++symnum; | |
1120 | } | |
1121 | } | |
1122 | ||
581e13c1 | 1123 | /* if symbol name starts with ".$" or "$", ignore it. */ |
c906108c SS |
1124 | if (cs->c_name[0] == '$' |
1125 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1126 | continue; | |
1127 | ||
1128 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
1129 | { | |
46212e0b | 1130 | if (get_last_source_file ()) |
c906108c | 1131 | { |
43f3e411 DE |
1132 | pst->compunit_symtab = end_symtab (cur_src_end_addr, |
1133 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1134 | end_stabs (); |
1135 | } | |
1136 | ||
1137 | start_stabs (); | |
cafb3438 TT |
1138 | start_symtab (objfile, "_globals_", NULL, |
1139 | 0, pst_symtab_language); | |
7a78ae4e | 1140 | record_debugformat (debugfmt); |
c906108c | 1141 | cur_src_end_addr = first_object_file_end; |
581e13c1 | 1142 | /* Done with all files, everything from here on is globals. */ |
c906108c SS |
1143 | } |
1144 | ||
55bcecda UW |
1145 | if (cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT || |
1146 | cs->c_sclass == C_WEAKEXT) | |
c906108c SS |
1147 | { |
1148 | /* Dealing with a symbol with a csect entry. */ | |
1149 | ||
1150 | #define CSECT(PP) ((PP)->x_csect) | |
1151 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1152 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1153 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1154 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1155 | ||
55bcecda UW |
1156 | /* Convert the auxent to something we can access. |
1157 | XCOFF can have more than one auxiliary entries. | |
1158 | ||
1159 | Actual functions will have two auxiliary entries, one to have the | |
1160 | function size and other to have the smtype/smclass (LD/PR). | |
1161 | ||
1162 | c_type value of main symbol table will be set only in case of | |
1163 | C_EXT/C_HIDEEXT/C_WEAKEXT storage class symbols. | |
1164 | Bit 10 of type is set if symbol is a function, ie the value is set | |
85102364 | 1165 | to 32(0x20). So we need to read the first function auxiliary entry |
55bcecda UW |
1166 | which contains the size. */ |
1167 | if (cs->c_naux > 1 && ISFCN (cs->c_type)) | |
1168 | { | |
1169 | /* a function entry point. */ | |
1170 | ||
1171 | fcn_start_addr = cs->c_value; | |
1172 | ||
1173 | /* save the function header info, which will be used | |
1174 | when `.bf' is seen. */ | |
1175 | fcn_cs_saved = *cs; | |
1176 | ||
1177 | /* Convert the auxent to something we can access. */ | |
1178 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1179 | 0, cs->c_naux, &fcn_aux_saved); | |
1180 | continue; | |
1181 | } | |
1182 | /* Read the csect auxiliary header, which is always the last by | |
85102364 | 1183 | convention. */ |
55bcecda UW |
1184 | bfd_coff_swap_aux_in (abfd, |
1185 | raw_auxptr | |
1186 | + ((coff_data (abfd)->local_symesz) | |
1187 | * (cs->c_naux - 1)), | |
1188 | cs->c_type, cs->c_sclass, | |
1189 | cs->c_naux - 1, cs->c_naux, | |
1190 | &main_aux); | |
c906108c SS |
1191 | |
1192 | switch (CSECT_SMTYP (&main_aux)) | |
1193 | { | |
1194 | ||
1195 | case XTY_ER: | |
1196 | /* Ignore all external references. */ | |
1197 | continue; | |
1198 | ||
1199 | case XTY_SD: | |
1200 | /* A section description. */ | |
1201 | { | |
1202 | switch (CSECT_SCLAS (&main_aux)) | |
1203 | { | |
1204 | ||
1205 | case XMC_PR: | |
1206 | { | |
1207 | ||
1208 | /* A program csect is seen. We have to allocate one | |
dda83cd7 SM |
1209 | symbol table for each program csect. Normally gdb |
1210 | prefers one symtab for each source file. In case | |
1211 | of AIX, one source file might include more than one | |
1212 | [PR] csect, and they don't have to be adjacent in | |
1213 | terms of the space they occupy in memory. Thus, one | |
1214 | single source file might get fragmented in the | |
1215 | memory and gdb's file start and end address | |
1216 | approach does not work! GCC (and I think xlc) seem | |
1217 | to put all the code in the unnamed program csect. */ | |
c906108c SS |
1218 | |
1219 | if (last_csect_name) | |
1220 | { | |
1221 | complete_symtab (filestring, file_start_addr); | |
1222 | cur_src_end_addr = file_end_addr; | |
43f3e411 | 1223 | end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1224 | end_stabs (); |
1225 | start_stabs (); | |
1226 | /* Give all csects for this source file the same | |
1227 | name. */ | |
4d663531 | 1228 | start_symtab (objfile, filestring, NULL, |
cafb3438 | 1229 | 0, pst_symtab_language); |
7a78ae4e | 1230 | record_debugformat (debugfmt); |
c906108c SS |
1231 | } |
1232 | ||
1233 | /* If this is the very first csect seen, | |
dda83cd7 | 1234 | basically `__start'. */ |
c906108c SS |
1235 | if (just_started) |
1236 | { | |
1237 | first_object_file_end | |
1238 | = cs->c_value + CSECT_LEN (&main_aux); | |
1239 | just_started = 0; | |
1240 | } | |
1241 | ||
1242 | file_start_addr = | |
b3b3bada | 1243 | cs->c_value + objfile->text_section_offset (); |
c906108c SS |
1244 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); |
1245 | ||
40301fb7 JB |
1246 | if (cs->c_name && (cs->c_name[0] == '.' || cs->c_name[0] == '@')) |
1247 | last_csect_name = cs->c_name; | |
c906108c SS |
1248 | } |
1249 | continue; | |
1250 | ||
1251 | /* All other symbols are put into the minimal symbol | |
1252 | table only. */ | |
1253 | ||
1254 | case XMC_RW: | |
1255 | continue; | |
1256 | ||
1257 | case XMC_TC0: | |
1258 | continue; | |
1259 | ||
1260 | case XMC_TC: | |
1261 | continue; | |
1262 | ||
1263 | default: | |
1264 | /* Ignore the symbol. */ | |
1265 | continue; | |
1266 | } | |
1267 | } | |
1268 | break; | |
1269 | ||
1270 | case XTY_LD: | |
1271 | ||
1272 | switch (CSECT_SCLAS (&main_aux)) | |
1273 | { | |
55bcecda UW |
1274 | /* We never really come to this part as this case has been |
1275 | handled in ISFCN check above. | |
1276 | This and other cases of XTY_LD are kept just for | |
1277 | reference. */ | |
c906108c | 1278 | case XMC_PR: |
c906108c SS |
1279 | continue; |
1280 | ||
1281 | case XMC_GL: | |
581e13c1 | 1282 | /* shared library function trampoline code entry point. */ |
c906108c SS |
1283 | continue; |
1284 | ||
1285 | case XMC_DS: | |
1286 | /* The symbols often have the same names as debug symbols for | |
1287 | functions, and confuse lookup_symbol. */ | |
1288 | continue; | |
1289 | ||
1290 | default: | |
1291 | /* xlc puts each variable in a separate csect, so we get | |
1292 | an XTY_SD for each variable. But gcc puts several | |
1293 | variables in a csect, so that each variable only gets | |
581e13c1 | 1294 | an XTY_LD. This will typically be XMC_RW; I suspect |
c906108c SS |
1295 | XMC_RO and XMC_BS might be possible too. |
1296 | These variables are put in the minimal symbol table | |
1297 | only. */ | |
1298 | continue; | |
1299 | } | |
1300 | break; | |
1301 | ||
1302 | case XTY_CM: | |
1303 | /* Common symbols are put into the minimal symbol table only. */ | |
1304 | continue; | |
1305 | ||
1306 | default: | |
1307 | break; | |
1308 | } | |
1309 | } | |
1310 | ||
1311 | switch (cs->c_sclass) | |
1312 | { | |
c906108c SS |
1313 | case C_FILE: |
1314 | ||
1315 | /* c_value field contains symnum of next .file entry in table | |
581e13c1 | 1316 | or symnum of first global after last .file. */ |
c906108c SS |
1317 | |
1318 | next_file_symnum = cs->c_value; | |
1319 | ||
1320 | /* Complete symbol table for last object file containing | |
581e13c1 | 1321 | debugging information. */ |
c906108c SS |
1322 | |
1323 | /* Whether or not there was a csect in the previous file, we | |
1324 | have to call `end_stabs' and `start_stabs' to reset | |
1325 | type_vector, line_vector, etc. structures. */ | |
1326 | ||
1327 | complete_symtab (filestring, file_start_addr); | |
1328 | cur_src_end_addr = file_end_addr; | |
4d663531 | 1329 | end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1330 | end_stabs (); |
1331 | ||
3e43a32a MS |
1332 | /* XCOFF, according to the AIX 3.2 documentation, puts the |
1333 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
1334 | do things the standard COFF way and put it in the auxent. | |
1335 | We use the auxent if the symbol is ".file" and an auxent | |
1336 | exists, otherwise use the symbol itself. Simple | |
1337 | enough. */ | |
c906108c SS |
1338 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) |
1339 | { | |
1340 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1341 | 0, cs->c_naux, &main_aux); | |
1342 | filestring = coff_getfilename (&main_aux, objfile); | |
1343 | } | |
1344 | else | |
1345 | filestring = cs->c_name; | |
1346 | ||
1347 | start_stabs (); | |
cafb3438 | 1348 | start_symtab (objfile, filestring, NULL, 0, pst_symtab_language); |
7a78ae4e | 1349 | record_debugformat (debugfmt); |
c906108c SS |
1350 | last_csect_name = 0; |
1351 | ||
581e13c1 | 1352 | /* reset file start and end addresses. A compilation unit |
3e43a32a | 1353 | with no text (only data) should have zero file |
581e13c1 | 1354 | boundaries. */ |
c906108c SS |
1355 | file_start_addr = file_end_addr = 0; |
1356 | break; | |
1357 | ||
1358 | case C_FUN: | |
1359 | fcn_stab_saved = *cs; | |
1360 | break; | |
1361 | ||
1362 | case C_FCN: | |
7ecb6532 | 1363 | if (strcmp (cs->c_name, ".bf") == 0) |
c906108c | 1364 | { |
b3b3bada | 1365 | CORE_ADDR off = objfile->text_section_offset (); |
a109c7c1 | 1366 | |
c906108c SS |
1367 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1368 | 0, cs->c_naux, &main_aux); | |
1369 | ||
1370 | within_function = 1; | |
1371 | ||
fe978cb0 | 1372 | newobj = push_context (0, fcn_start_addr + off); |
c906108c | 1373 | |
fe978cb0 | 1374 | newobj->name = define_symbol |
c906108c SS |
1375 | (fcn_cs_saved.c_value + off, |
1376 | fcn_stab_saved.c_name, 0, 0, objfile); | |
fe978cb0 | 1377 | if (newobj->name != NULL) |
a52d653e | 1378 | newobj->name->set_section_index (SECT_OFF_TEXT (objfile)); |
c906108c | 1379 | } |
7ecb6532 | 1380 | else if (strcmp (cs->c_name, ".ef") == 0) |
c906108c | 1381 | { |
c906108c SS |
1382 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1383 | 0, cs->c_naux, &main_aux); | |
1384 | ||
1385 | /* The value of .ef is the address of epilogue code; | |
dda83cd7 | 1386 | not useful for gdb. */ |
c906108c | 1387 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
dda83cd7 | 1388 | contains number of lines to '}' */ |
c906108c | 1389 | |
edb0470b | 1390 | if (outermost_context_p ()) |
581e13c1 | 1391 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1392 | ef_complaint (cs->c_symnum); |
c906108c SS |
1393 | within_function = 0; |
1394 | break; | |
1395 | } | |
a60f3166 | 1396 | struct context_stack cstk = pop_context (); |
c906108c | 1397 | /* Stack must be empty now. */ |
a60f3166 | 1398 | if (!outermost_context_p ()) |
c906108c | 1399 | { |
23136709 | 1400 | ef_complaint (cs->c_symnum); |
c906108c SS |
1401 | within_function = 0; |
1402 | break; | |
1403 | } | |
1404 | ||
c233e9c6 | 1405 | finish_block (cstk.name, cstk.old_blocks, |
a60f3166 | 1406 | NULL, cstk.start_addr, |
c906108c SS |
1407 | (fcn_cs_saved.c_value |
1408 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
b3b3bada | 1409 | + objfile->text_section_offset ())); |
c906108c SS |
1410 | within_function = 0; |
1411 | } | |
1412 | break; | |
1413 | ||
1414 | case C_BSTAT: | |
1415 | /* Begin static block. */ | |
1416 | { | |
b926417a | 1417 | struct internal_syment static_symbol; |
c906108c | 1418 | |
b926417a TT |
1419 | read_symbol (&static_symbol, cs->c_value); |
1420 | static_block_base = static_symbol.n_value; | |
c906108c | 1421 | static_block_section = |
b926417a | 1422 | secnum_to_section (static_symbol.n_scnum, objfile); |
c906108c SS |
1423 | } |
1424 | break; | |
1425 | ||
1426 | case C_ESTAT: | |
1427 | /* End of static block. */ | |
1428 | static_block_base = 0; | |
1429 | static_block_section = -1; | |
1430 | break; | |
1431 | ||
1432 | case C_ARG: | |
1433 | case C_REGPARM: | |
1434 | case C_REG: | |
1435 | case C_TPDEF: | |
1436 | case C_STRTAG: | |
1437 | case C_UNTAG: | |
1438 | case C_ENTAG: | |
1439 | { | |
b98664d3 | 1440 | complaint (_("Unrecognized storage class %d."), |
23136709 | 1441 | cs->c_sclass); |
c906108c SS |
1442 | } |
1443 | break; | |
1444 | ||
1445 | case C_LABEL: | |
1446 | case C_NULL: | |
1447 | /* Ignore these. */ | |
1448 | break; | |
1449 | ||
1450 | case C_HIDEXT: | |
1451 | case C_STAT: | |
1452 | break; | |
1453 | ||
1454 | case C_BINCL: | |
1455 | /* beginning of include file */ | |
1456 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
581e13c1 MS |
1457 | order. Thus, when wee see them, we might not know enough info |
1458 | to process them. Thus, we'll be saving them into a table | |
1459 | (inclTable) and postpone their processing. */ | |
c906108c SS |
1460 | |
1461 | record_include_begin (cs); | |
1462 | break; | |
1463 | ||
1464 | case C_EINCL: | |
1465 | /* End of include file. */ | |
1466 | /* See the comment after case C_BINCL. */ | |
1467 | record_include_end (cs); | |
1468 | break; | |
1469 | ||
1470 | case C_BLOCK: | |
7ecb6532 | 1471 | if (strcmp (cs->c_name, ".bb") == 0) |
c906108c SS |
1472 | { |
1473 | depth++; | |
fe978cb0 | 1474 | newobj = push_context (depth, |
c906108c | 1475 | (cs->c_value |
b3b3bada | 1476 | + objfile->text_section_offset ())); |
c906108c | 1477 | } |
7ecb6532 | 1478 | else if (strcmp (cs->c_name, ".eb") == 0) |
c906108c | 1479 | { |
edb0470b | 1480 | if (outermost_context_p ()) |
581e13c1 | 1481 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1482 | eb_complaint (cs->c_symnum); |
c906108c SS |
1483 | break; |
1484 | } | |
a60f3166 TT |
1485 | struct context_stack cstk = pop_context (); |
1486 | if (depth-- != cstk.depth) | |
c906108c | 1487 | { |
23136709 | 1488 | eb_complaint (cs->c_symnum); |
c906108c SS |
1489 | break; |
1490 | } | |
e148f09d | 1491 | if (*get_local_symbols () && !outermost_context_p ()) |
c906108c SS |
1492 | { |
1493 | /* Make a block for the local symbols within. */ | |
c233e9c6 | 1494 | finish_block (cstk.name, |
a60f3166 TT |
1495 | cstk.old_blocks, NULL, |
1496 | cstk.start_addr, | |
c906108c | 1497 | (cs->c_value |
b3b3bada | 1498 | + objfile->text_section_offset ())); |
c906108c | 1499 | } |
e148f09d | 1500 | *get_local_symbols () = cstk.locals; |
c906108c SS |
1501 | } |
1502 | break; | |
1503 | ||
1504 | default: | |
1505 | process_xcoff_symbol (cs, objfile); | |
1506 | break; | |
1507 | } | |
1508 | } | |
1509 | ||
46212e0b | 1510 | if (get_last_source_file ()) |
c906108c | 1511 | { |
43f3e411 | 1512 | struct compunit_symtab *cust; |
c906108c SS |
1513 | |
1514 | complete_symtab (filestring, file_start_addr); | |
1515 | cur_src_end_addr = file_end_addr; | |
43f3e411 | 1516 | cust = end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c | 1517 | /* When reading symbols for the last C_FILE of the objfile, try |
dda83cd7 SM |
1518 | to make sure that we set pst->compunit_symtab to the symtab for the |
1519 | file, not to the _globals_ symtab. I'm not sure whether this | |
1520 | actually works right or when/if it comes up. */ | |
43f3e411 DE |
1521 | if (pst->compunit_symtab == NULL) |
1522 | pst->compunit_symtab = cust; | |
c906108c SS |
1523 | end_stabs (); |
1524 | } | |
1525 | } | |
1526 | ||
c906108c | 1527 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ |
021887d8 TT |
1528 | ((ALLOCED) ? (NAME) : obstack_strdup (&objfile->objfile_obstack, \ |
1529 | (NAME))) | |
c906108c SS |
1530 | |
1531 | ||
581e13c1 | 1532 | /* process one xcoff symbol. */ |
c906108c SS |
1533 | |
1534 | static struct symbol * | |
aa1ee363 | 1535 | process_xcoff_symbol (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
1536 | { |
1537 | struct symbol onesymbol; | |
52f0bd74 | 1538 | struct symbol *sym = &onesymbol; |
c906108c SS |
1539 | struct symbol *sym2 = NULL; |
1540 | char *name, *pp; | |
1541 | ||
1542 | int sec; | |
1543 | CORE_ADDR off; | |
1544 | ||
1545 | if (cs->c_secnum < 0) | |
1546 | { | |
1547 | /* The value is a register number, offset within a frame, etc., | |
dda83cd7 | 1548 | and does not get relocated. */ |
c906108c SS |
1549 | off = 0; |
1550 | sec = -1; | |
1551 | } | |
1552 | else | |
1553 | { | |
1554 | sec = secnum_to_section (cs->c_secnum, objfile); | |
6a053cb1 | 1555 | off = objfile->section_offsets[sec]; |
c906108c SS |
1556 | } |
1557 | ||
1558 | name = cs->c_name; | |
1559 | if (name[0] == '.') | |
1560 | ++name; | |
1561 | ||
c906108c | 1562 | /* default assumptions */ |
38583298 | 1563 | SET_SYMBOL_VALUE_ADDRESS (sym, cs->c_value + off); |
176620f1 | 1564 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
a52d653e | 1565 | sym->set_section_index (secnum_to_section (cs->c_secnum, objfile)); |
c906108c SS |
1566 | |
1567 | if (ISFCN (cs->c_type)) | |
1568 | { | |
1569 | /* At this point, we don't know the type of the function. This | |
dda83cd7 SM |
1570 | will be patched with the type from its stab entry later on in |
1571 | patch_block_stabs (), unless the file was compiled without -g. */ | |
c906108c | 1572 | |
43678b0a | 1573 | sym->set_linkage_name (SYMNAME_ALLOC (name, symname_alloced)); |
46bf5051 | 1574 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_text_symbol; |
c906108c | 1575 | |
f1e6e072 | 1576 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
8c14c3a3 | 1577 | sym2 = new (&objfile->objfile_obstack) symbol (*sym); |
c906108c | 1578 | |
55bcecda | 1579 | if (cs->c_sclass == C_EXT || C_WEAKEXT) |
e148f09d | 1580 | add_symbol_to_list (sym2, get_global_symbols ()); |
c906108c | 1581 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) |
e148f09d | 1582 | add_symbol_to_list (sym2, get_file_symbols ()); |
c906108c SS |
1583 | } |
1584 | else | |
1585 | { | |
581e13c1 | 1586 | /* In case we can't figure out the type, provide default. */ |
46bf5051 | 1587 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
1588 | |
1589 | switch (cs->c_sclass) | |
1590 | { | |
1591 | #if 0 | |
c5aa993b JM |
1592 | /* The values of functions and global symbols are now resolved |
1593 | via the global_sym_chain in stabsread.c. */ | |
c906108c SS |
1594 | case C_FUN: |
1595 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1596 | add_stab_to_list (name, &global_stabs); | |
1597 | else | |
1598 | add_stab_to_list (name, &file_stabs); | |
1599 | break; | |
1600 | ||
1601 | case C_GSYM: | |
1602 | add_stab_to_list (name, &global_stabs); | |
1603 | break; | |
1604 | #endif | |
1605 | ||
1606 | case C_BCOMM: | |
1607 | common_block_start (cs->c_name, objfile); | |
1608 | break; | |
1609 | ||
1610 | case C_ECOMM: | |
1611 | common_block_end (objfile); | |
1612 | break; | |
1613 | ||
1614 | default: | |
b98664d3 | 1615 | complaint (_("Unexpected storage class: %d"), |
23136709 | 1616 | cs->c_sclass); |
c906108c SS |
1617 | /* FALLTHROUGH */ |
1618 | ||
1619 | case C_DECL: | |
1620 | case C_PSYM: | |
1621 | case C_RPSYM: | |
1622 | case C_ECOML: | |
1623 | case C_LSYM: | |
1624 | case C_RSYM: | |
1625 | case C_GSYM: | |
1626 | ||
1627 | { | |
1628 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1629 | if (sym != NULL) | |
1630 | { | |
a52d653e | 1631 | sym->set_section_index (sec); |
c906108c SS |
1632 | } |
1633 | return sym; | |
1634 | } | |
1635 | ||
1636 | case C_STSYM: | |
1637 | ||
1638 | /* For xlc (not GCC), the 'V' symbol descriptor is used for | |
1639 | all statics and we need to distinguish file-scope versus | |
1640 | function-scope using within_function. We do this by | |
1641 | changing the string we pass to define_symbol to use 'S' | |
1642 | where we need to, which is not necessarily super-clean, | |
1643 | but seems workable enough. */ | |
1644 | ||
9b13a2db PM |
1645 | if (*name == ':') |
1646 | return NULL; | |
1647 | ||
ed4b0e6a | 1648 | pp = strchr (name, ':'); |
9b13a2db | 1649 | if (pp == NULL) |
c906108c SS |
1650 | return NULL; |
1651 | ||
1652 | ++pp; | |
1653 | if (*pp == 'V' && !within_function) | |
1654 | *pp = 'S'; | |
1655 | sym = define_symbol ((cs->c_value | |
6a053cb1 | 1656 | + objfile->section_offsets[static_block_section]), |
c906108c SS |
1657 | cs->c_name, 0, 0, objfile); |
1658 | if (sym != NULL) | |
1659 | { | |
38583298 TT |
1660 | SET_SYMBOL_VALUE_ADDRESS (sym, |
1661 | SYMBOL_VALUE_ADDRESS (sym) | |
1662 | + static_block_base); | |
a52d653e | 1663 | sym->set_section_index (static_block_section); |
c906108c SS |
1664 | } |
1665 | return sym; | |
1666 | ||
1667 | } | |
1668 | } | |
1669 | return sym2; | |
1670 | } | |
1671 | ||
1672 | /* Extract the file name from the aux entry of a C_FILE symbol. | |
1673 | Result is in static storage and is only good for temporary use. */ | |
1674 | ||
1675 | static char * | |
fba45db2 | 1676 | coff_getfilename (union internal_auxent *aux_entry, struct objfile *objfile) |
c906108c SS |
1677 | { |
1678 | static char buffer[BUFSIZ]; | |
1679 | ||
1680 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
b8b98ad1 TT |
1681 | strcpy (buffer, (XCOFF_DATA (objfile)->strtbl |
1682 | + aux_entry->x_file.x_n.x_offset)); | |
c906108c SS |
1683 | else |
1684 | { | |
1685 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1686 | buffer[FILNMLEN] = '\0'; | |
1687 | } | |
1688 | return (buffer); | |
1689 | } | |
1690 | ||
1691 | /* Set *SYMBOL to symbol number symno in symtbl. */ | |
1692 | static void | |
fba45db2 | 1693 | read_symbol (struct internal_syment *symbol, int symno) |
c906108c | 1694 | { |
02dc647e | 1695 | struct xcoff_symfile_info *xcoff = XCOFF_DATA (this_symtab_objfile); |
b8b98ad1 TT |
1696 | int nsyms = xcoff->symtbl_num_syms; |
1697 | char *stbl = xcoff->symtbl; | |
a109c7c1 | 1698 | |
c906108c SS |
1699 | if (symno < 0 || symno >= nsyms) |
1700 | { | |
b98664d3 | 1701 | complaint (_("Invalid symbol offset")); |
c906108c SS |
1702 | symbol->n_value = 0; |
1703 | symbol->n_scnum = -1; | |
1704 | return; | |
1705 | } | |
5c80ed9d | 1706 | bfd_coff_swap_sym_in (this_symtab_objfile->obfd, |
c5aa993b | 1707 | stbl + (symno * local_symesz), |
c906108c SS |
1708 | symbol); |
1709 | } | |
c5aa993b | 1710 | |
c906108c SS |
1711 | /* Get value corresponding to symbol number symno in symtbl. */ |
1712 | ||
470d5666 | 1713 | static CORE_ADDR |
fba45db2 | 1714 | read_symbol_nvalue (int symno) |
c906108c SS |
1715 | { |
1716 | struct internal_syment symbol[1]; | |
1717 | ||
1718 | read_symbol (symbol, symno); | |
c5aa993b | 1719 | return symbol->n_value; |
c906108c SS |
1720 | } |
1721 | ||
1722 | ||
1723 | /* Find the address of the function corresponding to symno, where | |
1724 | symno is the symbol pointed to by the linetable. */ | |
1725 | ||
1726 | static int | |
fba45db2 | 1727 | read_symbol_lineno (int symno) |
c906108c | 1728 | { |
5c80ed9d | 1729 | struct objfile *objfile = this_symtab_objfile; |
7af35dad | 1730 | int xcoff64 = bfd_xcoff_is_xcoff64 (objfile->obfd); |
7a78ae4e | 1731 | |
02dc647e | 1732 | struct xcoff_symfile_info *info = XCOFF_DATA (objfile); |
7a78ae4e ND |
1733 | int nsyms = info->symtbl_num_syms; |
1734 | char *stbl = info->symtbl; | |
1735 | char *strtbl = info->strtbl; | |
1736 | ||
c906108c SS |
1737 | struct internal_syment symbol[1]; |
1738 | union internal_auxent main_aux[1]; | |
1739 | ||
1740 | if (symno < 0) | |
1741 | { | |
23136709 | 1742 | bf_notfound_complaint (); |
c906108c SS |
1743 | return 0; |
1744 | } | |
1745 | ||
1746 | /* Note that just searching for a short distance (e.g. 50 symbols) | |
1747 | is not enough, at least in the following case. | |
1748 | ||
1749 | .extern foo | |
1750 | [many .stabx entries] | |
1751 | [a few functions, referring to foo] | |
1752 | .globl foo | |
1753 | .bf | |
1754 | ||
1755 | What happens here is that the assembler moves the .stabx entries | |
1756 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1757 | all the stabx entries. See PR gdb/2222. */ | |
1758 | ||
1759 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1760 | If I understand things correctly it would need to be done only for | |
1761 | the duration of a single psymtab to symtab conversion. */ | |
1762 | while (symno < nsyms) | |
1763 | { | |
1764 | bfd_coff_swap_sym_in (symfile_bfd, | |
1765 | stbl + (symno * local_symesz), symbol); | |
7a78ae4e ND |
1766 | if (symbol->n_sclass == C_FCN) |
1767 | { | |
1768 | char *name = xcoff64 ? strtbl + symbol->n_offset : symbol->n_name; | |
a109c7c1 | 1769 | |
7ecb6532 | 1770 | if (strcmp (name, ".bf") == 0) |
7a78ae4e ND |
1771 | goto gotit; |
1772 | } | |
c906108c SS |
1773 | symno += symbol->n_numaux + 1; |
1774 | } | |
1775 | ||
23136709 | 1776 | bf_notfound_complaint (); |
c906108c SS |
1777 | return 0; |
1778 | ||
1779 | gotit: | |
581e13c1 | 1780 | /* Take aux entry and return its lineno. */ |
c906108c | 1781 | symno++; |
7a78ae4e | 1782 | bfd_coff_swap_aux_in (objfile->obfd, stbl + symno * local_symesz, |
c906108c SS |
1783 | symbol->n_type, symbol->n_sclass, |
1784 | 0, symbol->n_numaux, main_aux); | |
1785 | ||
1786 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1787 | } | |
1788 | ||
581e13c1 | 1789 | /* Support for line number handling. */ |
c906108c SS |
1790 | |
1791 | /* This function is called for every section; it finds the outer limits | |
1792 | * of the line table (minimum and maximum file offset) so that the | |
1793 | * mainline code can read the whole thing for efficiency. | |
1794 | */ | |
1795 | static void | |
7be0c536 | 1796 | find_linenos (struct bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c | 1797 | { |
02dc647e | 1798 | struct xcoff_symfile_info *info; |
c906108c SS |
1799 | int size, count; |
1800 | file_ptr offset, maxoff; | |
1801 | ||
1802 | count = asect->lineno_count; | |
1803 | ||
7ecb6532 | 1804 | if (strcmp (asect->name, ".text") != 0 || count == 0) |
c906108c SS |
1805 | return; |
1806 | ||
1807 | size = count * coff_data (abfd)->local_linesz; | |
02dc647e | 1808 | info = (struct xcoff_symfile_info *) vpinfo; |
c906108c SS |
1809 | offset = asect->line_filepos; |
1810 | maxoff = offset + size; | |
1811 | ||
1812 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1813 | info->min_lineno_offset = offset; | |
1814 | ||
1815 | if (maxoff > info->max_lineno_offset) | |
1816 | info->max_lineno_offset = maxoff; | |
1817 | } | |
1818 | \f | |
c906108c | 1819 | static void |
69b037c3 | 1820 | xcoff_expand_psymtab (legacy_psymtab *pst, struct objfile *objfile) |
c906108c | 1821 | { |
0494dbec | 1822 | gdb_assert (!pst->readin); |
c906108c | 1823 | |
581e13c1 | 1824 | /* Read in all partial symtabs on which this one is dependent. */ |
48993951 | 1825 | pst->expand_dependencies (objfile); |
c906108c | 1826 | |
c5aa993b | 1827 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0) |
c906108c SS |
1828 | { |
1829 | /* Init stuff necessary for reading in symbols. */ | |
1830 | stabsread_init (); | |
c906108c | 1831 | |
33c7c59d | 1832 | scoped_free_pendings free_pending; |
5c80ed9d | 1833 | read_xcoff_symtab (objfile, pst); |
c906108c SS |
1834 | } |
1835 | ||
6d94535f | 1836 | pst->readin = true; |
c906108c SS |
1837 | } |
1838 | ||
c906108c | 1839 | /* Read in all of the symbols for a given psymtab for real. |
257e7a09 | 1840 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
1841 | |
1842 | static void | |
891813be | 1843 | xcoff_read_symtab (legacy_psymtab *self, struct objfile *objfile) |
c906108c | 1844 | { |
077cbab2 | 1845 | gdb_assert (!self->readin); |
c906108c | 1846 | |
257e7a09 YQ |
1847 | if (((struct symloc *) self->read_symtab_private)->numsyms != 0 |
1848 | || self->number_of_dependencies) | |
c906108c | 1849 | { |
c906108c SS |
1850 | next_symbol_text_func = xcoff_next_symbol_text; |
1851 | ||
8566b89b | 1852 | self->expand_psymtab (objfile); |
c906108c SS |
1853 | |
1854 | /* Match with global symbols. This only needs to be done once, | |
dda83cd7 | 1855 | after all of the symtabs and dependencies have been read in. */ |
5c80ed9d | 1856 | scan_file_globals (objfile); |
c906108c SS |
1857 | } |
1858 | } | |
1859 | \f | |
1860 | static void | |
fba45db2 | 1861 | xcoff_new_init (struct objfile *objfile) |
c906108c SS |
1862 | { |
1863 | stabsread_new_init (); | |
c906108c SS |
1864 | } |
1865 | ||
1866 | /* Do initialization in preparation for reading symbols from OBJFILE. | |
c5aa993b | 1867 | |
c906108c SS |
1868 | We will only be called if this is an XCOFF or XCOFF-like file. |
1869 | BFD handles figuring out the format of the file, and code in symfile.c | |
1870 | uses BFD's determination to vector to us. */ | |
1871 | ||
1872 | static void | |
fba45db2 | 1873 | xcoff_symfile_init (struct objfile *objfile) |
c906108c | 1874 | { |
581e13c1 | 1875 | /* Allocate struct to keep track of the symfile. */ |
02dc647e | 1876 | xcoff_objfile_data_key.emplace (objfile); |
c906108c SS |
1877 | |
1878 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1879 | find this causes a significant slowdown in gdb then we could | |
1880 | set it in the debug symbol readers only when necessary. */ | |
1881 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
1882 | } |
1883 | ||
1884 | /* Perform any local cleanups required when we are done with a particular | |
1885 | objfile. I.E, we are in the process of discarding all symbol information | |
1886 | for an objfile, freeing up all memory held for it, and unlinking the | |
581e13c1 | 1887 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
1888 | |
1889 | static void | |
fba45db2 | 1890 | xcoff_symfile_finish (struct objfile *objfile) |
c906108c | 1891 | { |
c906108c SS |
1892 | /* Start with a fresh include table for the next objfile. */ |
1893 | if (inclTable) | |
1894 | { | |
b8c9b27d | 1895 | xfree (inclTable); |
c906108c SS |
1896 | inclTable = NULL; |
1897 | } | |
1898 | inclIndx = inclLength = inclDepth = 0; | |
1899 | } | |
1900 | ||
1901 | ||
1902 | static void | |
fba45db2 | 1903 | init_stringtab (bfd *abfd, file_ptr offset, struct objfile *objfile) |
c906108c SS |
1904 | { |
1905 | long length; | |
1906 | int val; | |
1907 | unsigned char lengthbuf[4]; | |
1908 | char *strtbl; | |
02dc647e | 1909 | struct xcoff_symfile_info *xcoff = XCOFF_DATA (objfile); |
c906108c | 1910 | |
b8b98ad1 | 1911 | xcoff->strtbl = NULL; |
c906108c SS |
1912 | |
1913 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) | |
8a3fe4f8 | 1914 | error (_("cannot seek to string table in %s: %s"), |
c906108c SS |
1915 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1916 | ||
3a42e9d0 | 1917 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c SS |
1918 | length = bfd_h_get_32 (abfd, lengthbuf); |
1919 | ||
1920 | /* If no string table is needed, then the file may end immediately | |
1921 | after the symbols. Just return with `strtbl' set to NULL. */ | |
1922 | ||
1923 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1924 | return; | |
1925 | ||
581e13c1 MS |
1926 | /* Allocate string table from objfile_obstack. We will need this table |
1927 | as long as we have its symbol table around. */ | |
c906108c | 1928 | |
4a146b47 | 1929 | strtbl = (char *) obstack_alloc (&objfile->objfile_obstack, length); |
b8b98ad1 | 1930 | xcoff->strtbl = strtbl; |
c906108c SS |
1931 | |
1932 | /* Copy length buffer, the first byte is usually zero and is | |
1933 | used for stabs with a name length of zero. */ | |
1934 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
1935 | if (length == sizeof lengthbuf) | |
1936 | return; | |
1937 | ||
3a42e9d0 | 1938 | val = bfd_bread (strtbl + sizeof lengthbuf, length - sizeof lengthbuf, abfd); |
c906108c SS |
1939 | |
1940 | if (val != length - sizeof lengthbuf) | |
8a3fe4f8 | 1941 | error (_("cannot read string table from %s: %s"), |
c906108c SS |
1942 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1943 | if (strtbl[length - 1] != '\0') | |
3e43a32a MS |
1944 | error (_("bad symbol file: string table " |
1945 | "does not end with null character")); | |
c906108c SS |
1946 | |
1947 | return; | |
1948 | } | |
1949 | \f | |
1950 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
1951 | have seen one, it is the offset in the line numbers of the line numbers | |
1952 | for the psymtab. */ | |
1953 | static unsigned int first_fun_line_offset; | |
1954 | ||
c906108c SS |
1955 | /* Allocate and partially fill a partial symtab. It will be |
1956 | completely filled at the end of the symbol list. | |
1957 | ||
1958 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1959 | is the address relative to which its symbols are (incremental) or 0 | |
581e13c1 | 1960 | (normal). */ |
c906108c | 1961 | |
891813be | 1962 | static legacy_psymtab * |
7b249e47 TT |
1963 | xcoff_start_psymtab (psymtab_storage *partial_symtabs, |
1964 | struct objfile *objfile, | |
939652a5 | 1965 | const char *filename, int first_symnum) |
c906108c | 1966 | { |
c3693a1d | 1967 | /* We fill in textlow later. */ |
7b249e47 TT |
1968 | legacy_psymtab *result = new legacy_psymtab (filename, partial_symtabs, |
1969 | objfile, 0); | |
c906108c | 1970 | |
8d749320 SM |
1971 | result->read_symtab_private = |
1972 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 1973 | ((struct symloc *) result->read_symtab_private)->first_symnum = first_symnum; |
891813be | 1974 | result->legacy_read_symtab = xcoff_read_symtab; |
69b037c3 | 1975 | result->legacy_expand_psymtab = xcoff_expand_psymtab; |
c906108c | 1976 | |
581e13c1 | 1977 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
1978 | psymtab_language = deduce_language_from_filename (filename); |
1979 | ||
1980 | return result; | |
1981 | } | |
1982 | ||
581e13c1 | 1983 | /* Close off the current usage of PST. |
c906108c SS |
1984 | Returns PST, or NULL if the partial symtab was empty and thrown away. |
1985 | ||
1986 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). | |
1987 | ||
1988 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES | |
1989 | are the information for includes and dependencies. */ | |
1990 | ||
891813be | 1991 | static legacy_psymtab * |
7e9c0476 TT |
1992 | xcoff_end_psymtab (struct objfile *objfile, psymtab_storage *partial_symtabs, |
1993 | legacy_psymtab *pst, | |
5c80ed9d TT |
1994 | const char **include_list, int num_includes, |
1995 | int capping_symbol_number, | |
891813be | 1996 | legacy_psymtab **dependency_list, |
fba45db2 | 1997 | int number_dependencies, int textlow_not_set) |
c906108c SS |
1998 | { |
1999 | int i; | |
c906108c SS |
2000 | |
2001 | if (capping_symbol_number != -1) | |
c5aa993b | 2002 | ((struct symloc *) pst->read_symtab_private)->numsyms = |
c906108c | 2003 | capping_symbol_number |
c5aa993b JM |
2004 | - ((struct symloc *) pst->read_symtab_private)->first_symnum; |
2005 | ((struct symloc *) pst->read_symtab_private)->lineno_off = | |
c906108c SS |
2006 | first_fun_line_offset; |
2007 | first_fun_line_offset = 0; | |
8763cede | 2008 | |
ae7754b2 | 2009 | pst->end (); |
c906108c SS |
2010 | |
2011 | pst->number_of_dependencies = number_dependencies; | |
2012 | if (number_dependencies) | |
2013 | { | |
a9342b62 | 2014 | pst->dependencies |
7e9c0476 | 2015 | = partial_symtabs->allocate_dependencies (number_dependencies); |
c906108c | 2016 | memcpy (pst->dependencies, dependency_list, |
891813be | 2017 | number_dependencies * sizeof (legacy_psymtab *)); |
c906108c SS |
2018 | } |
2019 | else | |
2020 | pst->dependencies = 0; | |
2021 | ||
2022 | for (i = 0; i < num_includes; i++) | |
2023 | { | |
891813be | 2024 | legacy_psymtab *subpst = |
7b249e47 | 2025 | new legacy_psymtab (include_list[i], partial_symtabs, objfile); |
c906108c | 2026 | |
e39db4db | 2027 | subpst->read_symtab_private = XOBNEW (&objfile->objfile_obstack, symloc); |
c5aa993b JM |
2028 | ((struct symloc *) subpst->read_symtab_private)->first_symnum = 0; |
2029 | ((struct symloc *) subpst->read_symtab_private)->numsyms = 0; | |
c906108c SS |
2030 | |
2031 | /* We could save slight bits of space by only making one of these, | |
dda83cd7 | 2032 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 | 2033 | subpst->dependencies = |
7e9c0476 | 2034 | partial_symtabs->allocate_dependencies (1); |
c906108c SS |
2035 | subpst->dependencies[0] = pst; |
2036 | subpst->number_of_dependencies = 1; | |
2037 | ||
891813be | 2038 | subpst->legacy_read_symtab = pst->legacy_read_symtab; |
8566b89b | 2039 | subpst->legacy_expand_psymtab = pst->legacy_expand_psymtab; |
c906108c SS |
2040 | } |
2041 | ||
c906108c SS |
2042 | if (num_includes == 0 |
2043 | && number_dependencies == 0 | |
932539d7 | 2044 | && pst->empty ()) |
c906108c | 2045 | { |
e0814aae | 2046 | /* Throw away this psymtab, it's empty. */ |
c906108c | 2047 | /* Empty psymtabs happen as a result of header files which don't have |
dda83cd7 | 2048 | any symbols in them. There can be a lot of them. */ |
c906108c | 2049 | |
7e9c0476 | 2050 | partial_symtabs->discard_psymtab (pst); |
c906108c SS |
2051 | |
2052 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2053 | pst = NULL; |
c906108c SS |
2054 | } |
2055 | return pst; | |
2056 | } | |
2057 | ||
c906108c SS |
2058 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in |
2059 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2060 | the symbol and its auxents. */ | |
2061 | ||
2062 | static void | |
fba45db2 | 2063 | swap_sym (struct internal_syment *symbol, union internal_auxent *aux, |
0d5cff50 | 2064 | const char **name, char **raw, unsigned int *symnump, |
fba45db2 | 2065 | struct objfile *objfile) |
c906108c SS |
2066 | { |
2067 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2068 | if (symbol->n_zeroes) | |
2069 | { | |
2070 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
dda83cd7 | 2071 | '\0'-terminated. */ |
c906108c SS |
2072 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') |
2073 | { | |
2074 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2075 | into the minimal symbols. */ | |
2076 | char *p; | |
a109c7c1 | 2077 | |
224c3ddb SM |
2078 | p = (char *) obstack_alloc (&objfile->objfile_obstack, |
2079 | E_SYMNMLEN + 1); | |
c906108c SS |
2080 | strncpy (p, symbol->n_name, E_SYMNMLEN); |
2081 | p[E_SYMNMLEN] = '\0'; | |
2082 | *name = p; | |
2083 | } | |
2084 | else | |
2085 | /* Point to the unswapped name as that persists as long as the | |
2086 | objfile does. */ | |
c5aa993b | 2087 | *name = ((struct external_syment *) *raw)->e.e_name; |
c906108c SS |
2088 | } |
2089 | else if (symbol->n_sclass & 0x80) | |
2090 | { | |
b8b98ad1 | 2091 | *name = XCOFF_DATA (objfile)->debugsec + symbol->n_offset; |
c906108c SS |
2092 | } |
2093 | else | |
2094 | { | |
b8b98ad1 | 2095 | *name = XCOFF_DATA (objfile)->strtbl + symbol->n_offset; |
c906108c SS |
2096 | } |
2097 | ++*symnump; | |
2098 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2099 | if (symbol->n_numaux > 0) | |
2100 | { | |
2101 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2102 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2103 | ||
2104 | *symnump += symbol->n_numaux; | |
2105 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2106 | } | |
2107 | } | |
2108 | ||
23136709 KB |
2109 | static void |
2110 | function_outside_compilation_unit_complaint (const char *arg1) | |
2111 | { | |
b98664d3 | 2112 | complaint (_("function `%s' appears to be defined " |
3e43a32a | 2113 | "outside of all compilation units"), |
23136709 KB |
2114 | arg1); |
2115 | } | |
2116 | ||
c906108c | 2117 | static void |
8dddcb8f | 2118 | scan_xcoff_symtab (minimal_symbol_reader &reader, |
7e9c0476 | 2119 | psymtab_storage *partial_symtabs, |
8dddcb8f | 2120 | struct objfile *objfile) |
c906108c | 2121 | { |
581e13c1 | 2122 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
0d5cff50 | 2123 | const char *filestring = NULL; |
c906108c | 2124 | |
0d5cff50 | 2125 | const char *namestring; |
c906108c SS |
2126 | bfd *abfd; |
2127 | asection *bfd_sect; | |
2128 | unsigned int nsyms; | |
2129 | ||
2130 | /* Current partial symtab */ | |
891813be | 2131 | legacy_psymtab *pst; |
c906108c | 2132 | |
581e13c1 | 2133 | /* List of current psymtab's include files. */ |
0d5cff50 | 2134 | const char **psymtab_include_list; |
c906108c SS |
2135 | int includes_allocated; |
2136 | int includes_used; | |
2137 | ||
581e13c1 | 2138 | /* Index within current psymtab dependency list. */ |
891813be | 2139 | legacy_psymtab **dependency_list; |
c906108c SS |
2140 | int dependencies_used, dependencies_allocated; |
2141 | ||
2142 | char *sraw_symbol; | |
2143 | struct internal_syment symbol; | |
96baa820 | 2144 | union internal_auxent main_aux[5]; |
c906108c SS |
2145 | unsigned int ssymnum; |
2146 | ||
0d5cff50 | 2147 | const char *last_csect_name = NULL; /* Last seen csect's name and value. */ |
c906108c SS |
2148 | CORE_ADDR last_csect_val = 0; |
2149 | int last_csect_sec = 0; | |
581e13c1 | 2150 | int misc_func_recorded = 0; /* true if any misc. function. */ |
c906108c SS |
2151 | int textlow_not_set = 1; |
2152 | ||
891813be | 2153 | pst = (legacy_psymtab *) 0; |
c906108c SS |
2154 | |
2155 | includes_allocated = 30; | |
2156 | includes_used = 0; | |
0d5cff50 DE |
2157 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2158 | sizeof (const char *)); | |
c906108c SS |
2159 | |
2160 | dependencies_allocated = 30; | |
2161 | dependencies_used = 0; | |
2162 | dependency_list = | |
891813be TT |
2163 | (legacy_psymtab **) alloca (dependencies_allocated * |
2164 | sizeof (legacy_psymtab *)); | |
c906108c | 2165 | |
46212e0b | 2166 | set_last_source_file (NULL); |
c906108c SS |
2167 | |
2168 | abfd = objfile->obfd; | |
13c763f4 | 2169 | next_symbol_text_func = xcoff_next_symbol_text; |
c906108c | 2170 | |
b8b98ad1 TT |
2171 | sraw_symbol = XCOFF_DATA (objfile)->symtbl; |
2172 | nsyms = XCOFF_DATA (objfile)->symtbl_num_syms; | |
c906108c SS |
2173 | ssymnum = 0; |
2174 | while (ssymnum < nsyms) | |
2175 | { | |
7a78ae4e | 2176 | int sclass; |
c906108c SS |
2177 | |
2178 | QUIT; | |
2179 | ||
7a78ae4e ND |
2180 | bfd_coff_swap_sym_in (abfd, sraw_symbol, &symbol); |
2181 | sclass = symbol.n_sclass; | |
2182 | ||
c906108c SS |
2183 | switch (sclass) |
2184 | { | |
2185 | case C_EXT: | |
2186 | case C_HIDEXT: | |
55bcecda | 2187 | case C_WEAKEXT: |
c906108c SS |
2188 | { |
2189 | /* The CSECT auxent--always the last auxent. */ | |
2190 | union internal_auxent csect_aux; | |
2191 | unsigned int symnum_before = ssymnum; | |
2192 | ||
96baa820 | 2193 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2194 | &ssymnum, objfile); |
2195 | if (symbol.n_numaux > 1) | |
2196 | { | |
2197 | bfd_coff_swap_aux_in | |
2198 | (objfile->obfd, | |
c5aa993b | 2199 | sraw_symbol - coff_data (abfd)->local_symesz, |
c906108c SS |
2200 | symbol.n_type, |
2201 | symbol.n_sclass, | |
2202 | symbol.n_numaux - 1, | |
2203 | symbol.n_numaux, | |
2204 | &csect_aux); | |
2205 | } | |
2206 | else | |
96baa820 | 2207 | csect_aux = main_aux[0]; |
c906108c | 2208 | |
977adac5 ND |
2209 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2210 | if (namestring[0] == '$' | |
c906108c SS |
2211 | || (namestring[0] == '.' && namestring[1] == '$')) |
2212 | break; | |
2213 | ||
2214 | switch (csect_aux.x_csect.x_smtyp & 0x7) | |
2215 | { | |
2216 | case XTY_SD: | |
2217 | switch (csect_aux.x_csect.x_smclas) | |
2218 | { | |
2219 | case XMC_PR: | |
2220 | if (last_csect_name) | |
2221 | { | |
2222 | /* If no misc. function recorded in the last | |
581e13c1 | 2223 | seen csect, enter it as a function. This |
c906108c SS |
2224 | will take care of functions like strcmp() |
2225 | compiled by xlc. */ | |
2226 | ||
2227 | if (!misc_func_recorded) | |
2228 | { | |
ec92004f | 2229 | record_minimal_symbol |
8dddcb8f | 2230 | (reader, last_csect_name, last_csect_val, |
ec92004f JB |
2231 | mst_text, last_csect_sec, objfile); |
2232 | misc_func_recorded = 1; | |
c906108c SS |
2233 | } |
2234 | ||
2235 | if (pst != NULL) | |
2236 | { | |
2237 | /* We have to allocate one psymtab for | |
2238 | each program csect, because their text | |
2239 | sections need not be adjacent. */ | |
2240 | xcoff_end_psymtab | |
7e9c0476 | 2241 | (objfile, partial_symtabs, pst, psymtab_include_list, |
5c80ed9d | 2242 | includes_used, symnum_before, dependency_list, |
c906108c SS |
2243 | dependencies_used, textlow_not_set); |
2244 | includes_used = 0; | |
2245 | dependencies_used = 0; | |
2246 | /* Give all psymtabs for this source file the same | |
2247 | name. */ | |
2248 | pst = xcoff_start_psymtab | |
7b249e47 | 2249 | (partial_symtabs, objfile, |
c906108c | 2250 | filestring, |
939652a5 | 2251 | symnum_before); |
c906108c SS |
2252 | } |
2253 | } | |
977adac5 ND |
2254 | /* Activate the misc_func_recorded mechanism for |
2255 | compiler- and linker-generated CSECTs like ".strcmp" | |
2256 | and "@FIX1". */ | |
2257 | if (namestring && (namestring[0] == '.' | |
2258 | || namestring[0] == '@')) | |
c906108c SS |
2259 | { |
2260 | last_csect_name = namestring; | |
2261 | last_csect_val = symbol.n_value; | |
ec92004f | 2262 | last_csect_sec = symbol.n_scnum; |
c906108c SS |
2263 | } |
2264 | if (pst != NULL) | |
2265 | { | |
2266 | CORE_ADDR highval = | |
a109c7c1 MS |
2267 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; |
2268 | ||
79748972 | 2269 | if (highval > pst->raw_text_high ()) |
4ae976d1 | 2270 | pst->set_text_high (highval); |
52948f01 | 2271 | if (!pst->text_low_valid |
79748972 | 2272 | || symbol.n_value < pst->raw_text_low ()) |
4ae976d1 | 2273 | pst->set_text_low (symbol.n_value); |
c906108c SS |
2274 | } |
2275 | misc_func_recorded = 0; | |
2276 | break; | |
2277 | ||
2278 | case XMC_RW: | |
6904b546 | 2279 | case XMC_TD: |
c906108c SS |
2280 | /* Data variables are recorded in the minimal symbol |
2281 | table, except for section symbols. */ | |
2282 | if (*namestring != '.') | |
4d1eb6b4 | 2283 | record_minimal_symbol |
8dddcb8f | 2284 | (reader, namestring, symbol.n_value, |
c906108c | 2285 | sclass == C_HIDEXT ? mst_file_data : mst_data, |
4d1eb6b4 | 2286 | symbol.n_scnum, objfile); |
c906108c SS |
2287 | break; |
2288 | ||
2289 | case XMC_TC0: | |
2290 | if (toc_offset) | |
8a3fe4f8 | 2291 | warning (_("More than one XMC_TC0 symbol found.")); |
c906108c SS |
2292 | toc_offset = symbol.n_value; |
2293 | ||
3e43a32a MS |
2294 | /* Make TOC offset relative to start address of |
2295 | section. */ | |
c906108c SS |
2296 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); |
2297 | if (bfd_sect) | |
fd361982 | 2298 | toc_offset -= bfd_section_vma (bfd_sect); |
c906108c SS |
2299 | break; |
2300 | ||
2301 | case XMC_TC: | |
2302 | /* These symbols tell us where the TOC entry for a | |
2303 | variable is, not the variable itself. */ | |
2304 | break; | |
2305 | ||
2306 | default: | |
2307 | break; | |
2308 | } | |
2309 | break; | |
2310 | ||
2311 | case XTY_LD: | |
2312 | switch (csect_aux.x_csect.x_smclas) | |
2313 | { | |
2314 | case XMC_PR: | |
2315 | /* A function entry point. */ | |
2316 | ||
2317 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2318 | first_fun_line_offset = | |
96baa820 | 2319 | main_aux[0].x_sym.x_fcnary.x_fcn.x_lnnoptr; |
a2e3e93f SM |
2320 | |
2321 | record_minimal_symbol | |
8dddcb8f | 2322 | (reader, namestring, symbol.n_value, |
a2e3e93f SM |
2323 | sclass == C_HIDEXT ? mst_file_text : mst_text, |
2324 | symbol.n_scnum, objfile); | |
2325 | misc_func_recorded = 1; | |
c906108c SS |
2326 | break; |
2327 | ||
2328 | case XMC_GL: | |
2329 | /* shared library function trampoline code entry | |
581e13c1 | 2330 | point. */ |
c906108c SS |
2331 | |
2332 | /* record trampoline code entries as | |
2333 | mst_solib_trampoline symbol. When we lookup mst | |
2334 | symbols, we will choose mst_text over | |
581e13c1 | 2335 | mst_solib_trampoline. */ |
ec92004f | 2336 | record_minimal_symbol |
8dddcb8f | 2337 | (reader, namestring, symbol.n_value, |
ec92004f JB |
2338 | mst_solib_trampoline, symbol.n_scnum, objfile); |
2339 | misc_func_recorded = 1; | |
c906108c SS |
2340 | break; |
2341 | ||
2342 | case XMC_DS: | |
2343 | /* The symbols often have the same names as | |
2344 | debug symbols for functions, and confuse | |
2345 | lookup_symbol. */ | |
2346 | break; | |
2347 | ||
2348 | default: | |
2349 | ||
2350 | /* xlc puts each variable in a separate csect, | |
2351 | so we get an XTY_SD for each variable. But | |
2352 | gcc puts several variables in a csect, so | |
2353 | that each variable only gets an XTY_LD. We | |
2354 | still need to record them. This will | |
2355 | typically be XMC_RW; I suspect XMC_RO and | |
2356 | XMC_BS might be possible too. */ | |
2357 | if (*namestring != '.') | |
4d1eb6b4 | 2358 | record_minimal_symbol |
8dddcb8f | 2359 | (reader, namestring, symbol.n_value, |
c906108c | 2360 | sclass == C_HIDEXT ? mst_file_data : mst_data, |
4d1eb6b4 | 2361 | symbol.n_scnum, objfile); |
c906108c SS |
2362 | break; |
2363 | } | |
2364 | break; | |
2365 | ||
2366 | case XTY_CM: | |
2367 | switch (csect_aux.x_csect.x_smclas) | |
2368 | { | |
2369 | case XMC_RW: | |
2370 | case XMC_BS: | |
2371 | /* Common variables are recorded in the minimal symbol | |
2372 | table, except for section symbols. */ | |
2373 | if (*namestring != '.') | |
4d1eb6b4 | 2374 | record_minimal_symbol |
8dddcb8f | 2375 | (reader, namestring, symbol.n_value, |
c906108c | 2376 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, |
4d1eb6b4 | 2377 | symbol.n_scnum, objfile); |
c906108c SS |
2378 | break; |
2379 | } | |
2380 | break; | |
2381 | ||
2382 | default: | |
2383 | break; | |
2384 | } | |
2385 | } | |
2386 | break; | |
2387 | case C_FILE: | |
2388 | { | |
2389 | unsigned int symnum_before; | |
2390 | ||
2391 | symnum_before = ssymnum; | |
96baa820 | 2392 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2393 | &ssymnum, objfile); |
2394 | ||
2395 | /* See if the last csect needs to be recorded. */ | |
2396 | ||
2397 | if (last_csect_name && !misc_func_recorded) | |
2398 | { | |
c906108c SS |
2399 | /* If no misc. function recorded in the last seen csect, enter |
2400 | it as a function. This will take care of functions like | |
2401 | strcmp() compiled by xlc. */ | |
2402 | ||
8dddcb8f | 2403 | record_minimal_symbol (reader, last_csect_name, last_csect_val, |
ec92004f JB |
2404 | mst_text, last_csect_sec, objfile); |
2405 | misc_func_recorded = 1; | |
c906108c SS |
2406 | } |
2407 | ||
2408 | if (pst) | |
2409 | { | |
7e9c0476 TT |
2410 | xcoff_end_psymtab (objfile, partial_symtabs, |
2411 | pst, psymtab_include_list, | |
5c80ed9d TT |
2412 | includes_used, symnum_before, |
2413 | dependency_list, dependencies_used, | |
2414 | textlow_not_set); | |
c906108c SS |
2415 | includes_used = 0; |
2416 | dependencies_used = 0; | |
2417 | } | |
2418 | first_fun_line_offset = 0; | |
2419 | ||
2420 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2421 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2422 | do things the standard COFF way and put it in the auxent. | |
2423 | We use the auxent if the symbol is ".file" and an auxent | |
2424 | exists, otherwise use the symbol itself. */ | |
2425 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2426 | { | |
96baa820 | 2427 | filestring = coff_getfilename (&main_aux[0], objfile); |
c906108c SS |
2428 | } |
2429 | else | |
2430 | filestring = namestring; | |
2431 | ||
7b249e47 | 2432 | pst = xcoff_start_psymtab (partial_symtabs, objfile, |
c906108c | 2433 | filestring, |
939652a5 | 2434 | symnum_before); |
c906108c SS |
2435 | last_csect_name = NULL; |
2436 | } | |
2437 | break; | |
2438 | ||
2439 | default: | |
2440 | { | |
b98664d3 | 2441 | complaint (_("Storage class %d not recognized during scan"), |
3e43a32a | 2442 | sclass); |
c906108c SS |
2443 | } |
2444 | /* FALLTHROUGH */ | |
2445 | ||
86a73007 | 2446 | case C_FCN: |
c906108c SS |
2447 | /* C_FCN is .bf and .ef symbols. I think it is sufficient |
2448 | to handle only the C_FUN and C_EXT. */ | |
c906108c SS |
2449 | |
2450 | case C_BSTAT: | |
2451 | case C_ESTAT: | |
2452 | case C_ARG: | |
2453 | case C_REGPARM: | |
2454 | case C_REG: | |
2455 | case C_TPDEF: | |
2456 | case C_STRTAG: | |
2457 | case C_UNTAG: | |
2458 | case C_ENTAG: | |
2459 | case C_LABEL: | |
2460 | case C_NULL: | |
2461 | ||
2462 | /* C_EINCL means we are switching back to the main file. But there | |
2463 | is no reason to care; the only thing we want to know about | |
2464 | includes is the names of all the included (.h) files. */ | |
2465 | case C_EINCL: | |
2466 | ||
2467 | case C_BLOCK: | |
2468 | ||
2469 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2470 | used instead. */ | |
2471 | case C_STAT: | |
2472 | ||
2473 | /* I don't think the name of the common block (as opposed to the | |
2474 | variables within it) is something which is user visible | |
2475 | currently. */ | |
2476 | case C_BCOMM: | |
2477 | case C_ECOMM: | |
2478 | ||
2479 | case C_PSYM: | |
2480 | case C_RPSYM: | |
2481 | ||
2482 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2483 | so C_LSYM would appear to be only for locals. */ | |
2484 | case C_LSYM: | |
2485 | ||
2486 | case C_AUTO: | |
2487 | case C_RSYM: | |
2488 | { | |
2489 | /* We probably could save a few instructions by assuming that | |
2490 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
7a78ae4e | 2491 | int naux1 = symbol.n_numaux + 1; |
a109c7c1 | 2492 | |
c906108c | 2493 | ssymnum += naux1; |
7a78ae4e | 2494 | sraw_symbol += bfd_coff_symesz (abfd) * naux1; |
c906108c SS |
2495 | } |
2496 | break; | |
2497 | ||
2498 | case C_BINCL: | |
d5d0a62f | 2499 | { |
581e13c1 | 2500 | /* Mark down an include file in the current psymtab. */ |
d5d0a62f | 2501 | enum language tmp_language; |
a109c7c1 | 2502 | |
d5d0a62f EZ |
2503 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2504 | &ssymnum, objfile); | |
2505 | ||
2506 | tmp_language = deduce_language_from_filename (namestring); | |
2507 | ||
2508 | /* Only change the psymtab's language if we've learned | |
2509 | something useful (eg. tmp_language is not language_unknown). | |
2510 | In addition, to match what start_subfile does, never change | |
2511 | from C++ to C. */ | |
2512 | if (tmp_language != language_unknown | |
2513 | && (tmp_language != language_c | |
2514 | || psymtab_language != language_cplus)) | |
2515 | psymtab_language = tmp_language; | |
2516 | ||
2517 | /* In C++, one may expect the same filename to come round many | |
2518 | times, when code is coming alternately from the main file | |
581e13c1 | 2519 | and from inline functions in other files. So I check to see |
d5d0a62f EZ |
2520 | if this is a file we've seen before -- either the main |
2521 | source file, or a previously included file. | |
2522 | ||
2523 | This seems to be a lot of time to be spending on N_SOL, but | |
2524 | things like "break c-exp.y:435" need to work (I | |
2525 | suppose the psymtab_include_list could be hashed or put | |
2526 | in a binary tree, if profiling shows this is a major hog). */ | |
7ecb6532 | 2527 | if (pst && strcmp (namestring, pst->filename) == 0) |
d5d0a62f | 2528 | continue; |
a109c7c1 | 2529 | |
d5d0a62f | 2530 | { |
aa1ee363 | 2531 | int i; |
a109c7c1 | 2532 | |
d5d0a62f | 2533 | for (i = 0; i < includes_used; i++) |
7ecb6532 | 2534 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
d5d0a62f EZ |
2535 | { |
2536 | i = -1; | |
2537 | break; | |
2538 | } | |
2539 | if (i == -1) | |
2540 | continue; | |
2541 | } | |
2542 | psymtab_include_list[includes_used++] = namestring; | |
2543 | if (includes_used >= includes_allocated) | |
2544 | { | |
0d5cff50 | 2545 | const char **orig = psymtab_include_list; |
c906108c | 2546 | |
0d5cff50 | 2547 | psymtab_include_list = (const char **) |
d5d0a62f | 2548 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 2549 | sizeof (const char *)); |
4efb68b1 | 2550 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 2551 | includes_used * sizeof (const char *)); |
d5d0a62f EZ |
2552 | } |
2553 | continue; | |
2554 | } | |
c906108c SS |
2555 | case C_FUN: |
2556 | /* The value of the C_FUN is not the address of the function (it | |
2557 | appears to be the address before linking), but as long as it | |
2558 | is smaller than the actual address, then find_pc_partial_function | |
2559 | will use the minimal symbols instead. I hope. */ | |
2560 | ||
2561 | case C_GSYM: | |
2562 | case C_ECOML: | |
2563 | case C_DECL: | |
2564 | case C_STSYM: | |
d5d0a62f | 2565 | { |
e28566f7 | 2566 | const char *p; |
a109c7c1 | 2567 | |
d5d0a62f EZ |
2568 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2569 | &ssymnum, objfile); | |
2570 | ||
ed4b0e6a | 2571 | p = strchr (namestring, ':'); |
d5d0a62f EZ |
2572 | if (!p) |
2573 | continue; /* Not a debugging symbol. */ | |
2574 | ||
2575 | /* Main processing section for debugging symbols which | |
2576 | the initial read through the symbol tables needs to worry | |
2577 | about. If we reach this point, the symbol which we are | |
2578 | considering is definitely one we are interested in. | |
2579 | p must also contain the (valid) index into the namestring | |
2580 | which indicates the debugging type symbol. */ | |
2581 | ||
2582 | switch (p[1]) | |
2583 | { | |
2584 | case 'S': | |
932539d7 TT |
2585 | pst->add_psymbol (gdb::string_view (namestring, |
2586 | p - namestring), | |
2587 | true, VAR_DOMAIN, LOC_STATIC, | |
2588 | SECT_OFF_DATA (objfile), | |
2589 | psymbol_placement::STATIC, | |
2590 | symbol.n_value, | |
7b249e47 TT |
2591 | psymtab_language, |
2592 | partial_symtabs, objfile); | |
d5d0a62f EZ |
2593 | continue; |
2594 | ||
2595 | case 'G': | |
d5d0a62f | 2596 | /* The addresses in these entries are reported to be |
581e13c1 | 2597 | wrong. See the code that reads 'G's for symtabs. */ |
932539d7 TT |
2598 | pst->add_psymbol (gdb::string_view (namestring, |
2599 | p - namestring), | |
2600 | true, VAR_DOMAIN, LOC_STATIC, | |
2601 | SECT_OFF_DATA (objfile), | |
2602 | psymbol_placement::GLOBAL, | |
2603 | symbol.n_value, | |
7b249e47 TT |
2604 | psymtab_language, |
2605 | partial_symtabs, objfile); | |
d5d0a62f EZ |
2606 | continue; |
2607 | ||
2608 | case 'T': | |
2609 | /* When a 'T' entry is defining an anonymous enum, it | |
2610 | may have a name which is the empty string, or a | |
2611 | single space. Since they're not really defining a | |
2612 | symbol, those shouldn't go in the partial symbol | |
2613 | table. We do pick up the elements of such enums at | |
2614 | 'check_enum:', below. */ | |
2615 | if (p >= namestring + 2 | |
2616 | || (p == namestring + 1 | |
2617 | && namestring[0] != ' ')) | |
2618 | { | |
932539d7 TT |
2619 | pst->add_psymbol (gdb::string_view (namestring, |
2620 | p - namestring), | |
2621 | true, STRUCT_DOMAIN, LOC_TYPEDEF, -1, | |
2622 | psymbol_placement::STATIC, | |
7b249e47 TT |
2623 | 0, psymtab_language, |
2624 | partial_symtabs, objfile); | |
d5d0a62f EZ |
2625 | if (p[2] == 't') |
2626 | { | |
2627 | /* Also a typedef with the same name. */ | |
932539d7 TT |
2628 | pst->add_psymbol (gdb::string_view (namestring, |
2629 | p - namestring), | |
2630 | true, VAR_DOMAIN, LOC_TYPEDEF, -1, | |
2631 | psymbol_placement::STATIC, | |
7b249e47 TT |
2632 | 0, psymtab_language, |
2633 | partial_symtabs, objfile); | |
d5d0a62f EZ |
2634 | p += 1; |
2635 | } | |
d5d0a62f EZ |
2636 | } |
2637 | goto check_enum; | |
2638 | ||
2639 | case 't': | |
581e13c1 | 2640 | if (p != namestring) /* a name is there, not just :T... */ |
d5d0a62f | 2641 | { |
932539d7 TT |
2642 | pst->add_psymbol (gdb::string_view (namestring, |
2643 | p - namestring), | |
2644 | true, VAR_DOMAIN, LOC_TYPEDEF, -1, | |
2645 | psymbol_placement::STATIC, | |
7b249e47 TT |
2646 | 0, psymtab_language, |
2647 | partial_symtabs, objfile); | |
d5d0a62f EZ |
2648 | } |
2649 | check_enum: | |
2650 | /* If this is an enumerated type, we need to | |
2651 | add all the enum constants to the partial symbol | |
2652 | table. This does not cover enums without names, e.g. | |
2653 | "enum {a, b} c;" in C, but fortunately those are | |
2654 | rare. There is no way for GDB to find those from the | |
2655 | enum type without spending too much time on it. Thus | |
2656 | to solve this problem, the compiler needs to put out the | |
2657 | enum in a nameless type. GCC2 does this. */ | |
2658 | ||
2659 | /* We are looking for something of the form | |
2660 | <name> ":" ("t" | "T") [<number> "="] "e" | |
2661 | {<constant> ":" <value> ","} ";". */ | |
2662 | ||
2663 | /* Skip over the colon and the 't' or 'T'. */ | |
2664 | p += 2; | |
2665 | /* This type may be given a number. Also, numbers can come | |
2666 | in pairs like (0,26). Skip over it. */ | |
2667 | while ((*p >= '0' && *p <= '9') | |
2668 | || *p == '(' || *p == ',' || *p == ')' | |
2669 | || *p == '=') | |
2670 | p++; | |
2671 | ||
2672 | if (*p++ == 'e') | |
2673 | { | |
3e43a32a MS |
2674 | /* The aix4 compiler emits extra crud before the |
2675 | members. */ | |
d5d0a62f EZ |
2676 | if (*p == '-') |
2677 | { | |
2678 | /* Skip over the type (?). */ | |
2679 | while (*p != ':') | |
2680 | p++; | |
2681 | ||
2682 | /* Skip over the colon. */ | |
2683 | p++; | |
2684 | } | |
2685 | ||
2686 | /* We have found an enumerated type. */ | |
2687 | /* According to comments in read_enum_type | |
2688 | a comma could end it instead of a semicolon. | |
2689 | I don't know where that happens. | |
2690 | Accept either. */ | |
2691 | while (*p && *p != ';' && *p != ',') | |
2692 | { | |
e28566f7 | 2693 | const char *q; |
d5d0a62f EZ |
2694 | |
2695 | /* Check for and handle cretinous dbx symbol name | |
2696 | continuation! */ | |
2697 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
2698 | p = next_symbol_text (objfile); | |
2699 | ||
2700 | /* Point to the character after the name | |
2701 | of the enum constant. */ | |
2702 | for (q = p; *q && *q != ':'; q++) | |
2703 | ; | |
2704 | /* Note that the value doesn't matter for | |
2705 | enum constants in psymtabs, just in symtabs. */ | |
932539d7 TT |
2706 | pst->add_psymbol (gdb::string_view (p, q - p), true, |
2707 | VAR_DOMAIN, LOC_CONST, -1, | |
2708 | psymbol_placement::STATIC, | |
7b249e47 TT |
2709 | 0, psymtab_language, |
2710 | partial_symtabs, objfile); | |
d5d0a62f EZ |
2711 | /* Point past the name. */ |
2712 | p = q; | |
2713 | /* Skip over the value. */ | |
2714 | while (*p && *p != ',') | |
2715 | p++; | |
2716 | /* Advance past the comma. */ | |
2717 | if (*p) | |
2718 | p++; | |
2719 | } | |
2720 | } | |
2721 | continue; | |
2722 | ||
2723 | case 'c': | |
2724 | /* Constant, e.g. from "const" in Pascal. */ | |
932539d7 TT |
2725 | pst->add_psymbol (gdb::string_view (namestring, |
2726 | p - namestring), | |
2727 | true, VAR_DOMAIN, LOC_CONST, -1, | |
2728 | psymbol_placement::STATIC, | |
7b249e47 TT |
2729 | 0, psymtab_language, |
2730 | partial_symtabs, objfile); | |
d5d0a62f EZ |
2731 | continue; |
2732 | ||
2733 | case 'f': | |
2734 | if (! pst) | |
2735 | { | |
2736 | int name_len = p - namestring; | |
224c3ddb | 2737 | char *name = (char *) xmalloc (name_len + 1); |
a109c7c1 | 2738 | |
d5d0a62f EZ |
2739 | memcpy (name, namestring, name_len); |
2740 | name[name_len] = '\0'; | |
23136709 | 2741 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2742 | xfree (name); |
2743 | } | |
932539d7 TT |
2744 | pst->add_psymbol (gdb::string_view (namestring, |
2745 | p - namestring), | |
2746 | true, VAR_DOMAIN, LOC_BLOCK, | |
2747 | SECT_OFF_TEXT (objfile), | |
2748 | psymbol_placement::STATIC, | |
2749 | symbol.n_value, | |
7b249e47 TT |
2750 | psymtab_language, |
2751 | partial_symtabs, objfile); | |
d5d0a62f EZ |
2752 | continue; |
2753 | ||
2754 | /* Global functions were ignored here, but now they | |
2755 | are put into the global psymtab like one would expect. | |
2756 | They're also in the minimal symbol table. */ | |
2757 | case 'F': | |
2758 | if (! pst) | |
2759 | { | |
2760 | int name_len = p - namestring; | |
224c3ddb | 2761 | char *name = (char *) xmalloc (name_len + 1); |
a109c7c1 | 2762 | |
d5d0a62f EZ |
2763 | memcpy (name, namestring, name_len); |
2764 | name[name_len] = '\0'; | |
23136709 | 2765 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2766 | xfree (name); |
2767 | } | |
9f1d5432 PH |
2768 | |
2769 | /* We need only the minimal symbols for these | |
581e13c1 | 2770 | loader-generated definitions. Keeping the global |
9f1d5432 | 2771 | symbols leads to "in psymbols but not in symbols" |
581e13c1 | 2772 | errors. */ |
61012eef | 2773 | if (startswith (namestring, "@FIX")) |
9f1d5432 PH |
2774 | continue; |
2775 | ||
932539d7 TT |
2776 | pst->add_psymbol (gdb::string_view (namestring, |
2777 | p - namestring), | |
2778 | true, VAR_DOMAIN, LOC_BLOCK, | |
2779 | SECT_OFF_TEXT (objfile), | |
2780 | psymbol_placement::GLOBAL, | |
2781 | symbol.n_value, | |
7b249e47 TT |
2782 | psymtab_language, |
2783 | partial_symtabs, objfile); | |
d5d0a62f EZ |
2784 | continue; |
2785 | ||
2786 | /* Two things show up here (hopefully); static symbols of | |
2787 | local scope (static used inside braces) or extensions | |
2788 | of structure symbols. We can ignore both. */ | |
2789 | case 'V': | |
2790 | case '(': | |
2791 | case '0': | |
2792 | case '1': | |
2793 | case '2': | |
2794 | case '3': | |
2795 | case '4': | |
2796 | case '5': | |
2797 | case '6': | |
2798 | case '7': | |
2799 | case '8': | |
2800 | case '9': | |
2801 | case '-': | |
3e43a32a MS |
2802 | case '#': /* For symbol identification (used in |
2803 | live ranges). */ | |
d5d0a62f EZ |
2804 | continue; |
2805 | ||
2806 | case ':': | |
2807 | /* It is a C++ nested symbol. We don't need to record it | |
2808 | (I don't think); if we try to look up foo::bar::baz, | |
2809 | then symbols for the symtab containing foo should get | |
2810 | read in, I think. */ | |
2811 | /* Someone says sun cc puts out symbols like | |
2812 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2813 | which would get here with a symbol type of ':'. */ | |
2814 | continue; | |
2815 | ||
2816 | default: | |
3e43a32a MS |
2817 | /* Unexpected symbol descriptor. The second and |
2818 | subsequent stabs of a continued stab can show up | |
2819 | here. The question is whether they ever can mimic | |
2820 | a normal stab--it would be nice if not, since we | |
2821 | certainly don't want to spend the time searching to | |
2822 | the end of every string looking for a | |
2823 | backslash. */ | |
d5d0a62f | 2824 | |
b98664d3 | 2825 | complaint (_("unknown symbol descriptor `%c'"), p[1]); |
d5d0a62f EZ |
2826 | |
2827 | /* Ignore it; perhaps it is an extension that we don't | |
2828 | know about. */ | |
2829 | continue; | |
2830 | } | |
2831 | } | |
c906108c SS |
2832 | } |
2833 | } | |
2834 | ||
2835 | if (pst) | |
2836 | { | |
7e9c0476 TT |
2837 | xcoff_end_psymtab (objfile, partial_symtabs, |
2838 | pst, psymtab_include_list, includes_used, | |
c906108c SS |
2839 | ssymnum, dependency_list, |
2840 | dependencies_used, textlow_not_set); | |
2841 | } | |
2842 | ||
581e13c1 MS |
2843 | /* Record the toc offset value of this symbol table into objfile |
2844 | structure. If no XMC_TC0 is found, toc_offset should be zero. | |
2845 | Another place to obtain this information would be file auxiliary | |
2846 | header. */ | |
c906108c | 2847 | |
b8b98ad1 | 2848 | XCOFF_DATA (objfile)->toc_offset = toc_offset; |
c906108c SS |
2849 | } |
2850 | ||
2851 | /* Return the toc offset value for a given objfile. */ | |
2852 | ||
2853 | CORE_ADDR | |
63807e1d | 2854 | xcoff_get_toc_offset (struct objfile *objfile) |
c906108c SS |
2855 | { |
2856 | if (objfile) | |
b8b98ad1 | 2857 | return XCOFF_DATA (objfile)->toc_offset; |
c906108c SS |
2858 | return 0; |
2859 | } | |
2860 | ||
2861 | /* Scan and build partial symbols for a symbol file. | |
2862 | We have been initialized by a call to dbx_symfile_init, which | |
2863 | put all the relevant info into a "struct dbx_symfile_info", | |
2864 | hung off the objfile structure. | |
2865 | ||
2866 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
581e13c1 MS |
2867 | various sections are (depending where the sections were actually |
2868 | loaded). */ | |
c906108c SS |
2869 | |
2870 | static void | |
b15cc25c | 2871 | xcoff_initial_scan (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
2872 | { |
2873 | bfd *abfd; | |
2874 | int val; | |
c5aa993b JM |
2875 | int num_symbols; /* # of symbols */ |
2876 | file_ptr symtab_offset; /* symbol table and */ | |
2877 | file_ptr stringtab_offset; /* string table file offsets */ | |
02dc647e | 2878 | struct xcoff_symfile_info *info; |
4262abfb | 2879 | const char *name; |
c906108c SS |
2880 | unsigned int size; |
2881 | ||
b8b98ad1 | 2882 | info = XCOFF_DATA (objfile); |
c906108c | 2883 | symfile_bfd = abfd = objfile->obfd; |
4262abfb | 2884 | name = objfile_name (objfile); |
c906108c SS |
2885 | |
2886 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2887 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2888 | stringtab_offset = symtab_offset + | |
c5aa993b | 2889 | num_symbols * coff_data (abfd)->local_symesz; |
c906108c SS |
2890 | |
2891 | info->min_lineno_offset = 0; | |
2892 | info->max_lineno_offset = 0; | |
2893 | bfd_map_over_sections (abfd, find_linenos, info); | |
2894 | ||
2895 | if (num_symbols > 0) | |
2896 | { | |
2897 | /* Read the string table. */ | |
2898 | init_stringtab (abfd, stringtab_offset, objfile); | |
2899 | ||
97cbe998 SDJ |
2900 | /* Read the .debug section, if present and if we're not ignoring |
2901 | it. */ | |
2902 | if (!(objfile->flags & OBJF_READNEVER)) | |
2903 | { | |
2904 | struct bfd_section *secp; | |
2905 | bfd_size_type length; | |
2906 | bfd_byte *debugsec = NULL; | |
c906108c | 2907 | |
97cbe998 SDJ |
2908 | secp = bfd_get_section_by_name (abfd, ".debug"); |
2909 | if (secp) | |
2910 | { | |
fd361982 | 2911 | length = bfd_section_size (secp); |
97cbe998 SDJ |
2912 | if (length) |
2913 | { | |
2914 | debugsec | |
2915 | = (bfd_byte *) obstack_alloc (&objfile->objfile_obstack, | |
2916 | length); | |
c906108c | 2917 | |
97cbe998 SDJ |
2918 | if (!bfd_get_full_section_contents (abfd, secp, &debugsec)) |
2919 | { | |
2920 | error (_("Error reading .debug section of `%s': %s"), | |
2921 | name, bfd_errmsg (bfd_get_error ())); | |
2922 | } | |
2923 | } | |
2924 | } | |
2925 | info->debugsec = (char *) debugsec; | |
2926 | } | |
c906108c SS |
2927 | } |
2928 | ||
2929 | /* Read the symbols. We keep them in core because we will want to | |
2930 | access them randomly in read_symbol*. */ | |
2931 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); | |
2932 | if (val < 0) | |
8a3fe4f8 | 2933 | error (_("Error reading symbols from %s: %s"), |
c906108c SS |
2934 | name, bfd_errmsg (bfd_get_error ())); |
2935 | size = coff_data (abfd)->local_symesz * num_symbols; | |
224c3ddb | 2936 | info->symtbl = (char *) obstack_alloc (&objfile->objfile_obstack, size); |
b8b98ad1 TT |
2937 | info->symtbl_num_syms = num_symbols; |
2938 | ||
2939 | val = bfd_bread (info->symtbl, size, abfd); | |
c906108c | 2940 | if (val != size) |
e2e0b3e5 | 2941 | perror_with_name (_("reading symbol table")); |
c906108c | 2942 | |
33c7c59d | 2943 | scoped_free_pendings free_pending; |
d25e8719 | 2944 | minimal_symbol_reader reader (objfile); |
c906108c SS |
2945 | |
2946 | /* Now that the symbol table data of the executable file are all in core, | |
2947 | process them and define symbols accordingly. */ | |
2948 | ||
eb36a3eb TT |
2949 | psymbol_functions *psf = new psymbol_functions (); |
2950 | psymtab_storage *partial_symtabs = psf->get_partial_symtabs ().get (); | |
2951 | objfile->qf.emplace_front (psf); | |
7e9c0476 | 2952 | scan_xcoff_symtab (reader, partial_symtabs, objfile); |
c906108c SS |
2953 | |
2954 | /* Install any minimal symbols that have been collected as the current | |
581e13c1 | 2955 | minimal symbols for this objfile. */ |
c906108c | 2956 | |
d25e8719 | 2957 | reader.install (); |
c906108c | 2958 | |
316a8b21 TG |
2959 | /* DWARF2 sections. */ |
2960 | ||
2961 | if (dwarf2_has_info (objfile, &dwarf2_xcoff_names)) | |
2962 | dwarf2_build_psymtabs (objfile); | |
2963 | ||
2964 | dwarf2_build_frame_info (objfile); | |
c906108c SS |
2965 | } |
2966 | \f | |
d4f3574e | 2967 | static void |
3e43a32a | 2968 | xcoff_symfile_offsets (struct objfile *objfile, |
37e136b1 | 2969 | const section_addr_info &addrs) |
c906108c | 2970 | { |
4d1eb6b4 | 2971 | const char *first_section_name; |
c906108c | 2972 | |
4d1eb6b4 | 2973 | default_symfile_offsets (objfile, addrs); |
c906108c | 2974 | |
4d1eb6b4 JB |
2975 | /* Oneof the weird side-effects of default_symfile_offsets is that |
2976 | it sometimes sets some section indices to zero for sections that, | |
2977 | in fact do not exist. See the body of default_symfile_offsets | |
2978 | for more info on when that happens. Undo that, as this then allows | |
2979 | us to test whether the associated section exists or not, and then | |
2980 | access it quickly (without searching it again). */ | |
b8fbeb18 | 2981 | |
6a053cb1 | 2982 | if (objfile->section_offsets.empty ()) |
4d1eb6b4 | 2983 | return; /* Is that even possible? Better safe than sorry. */ |
b8fbeb18 | 2984 | |
fd361982 | 2985 | first_section_name = bfd_section_name (objfile->sections[0].the_bfd_section); |
b8fbeb18 | 2986 | |
4d1eb6b4 JB |
2987 | if (objfile->sect_index_text == 0 |
2988 | && strcmp (first_section_name, ".text") != 0) | |
2989 | objfile->sect_index_text = -1; | |
b8fbeb18 | 2990 | |
4d1eb6b4 JB |
2991 | if (objfile->sect_index_data == 0 |
2992 | && strcmp (first_section_name, ".data") != 0) | |
2993 | objfile->sect_index_data = -1; | |
2994 | ||
2995 | if (objfile->sect_index_bss == 0 | |
2996 | && strcmp (first_section_name, ".bss") != 0) | |
2997 | objfile->sect_index_bss = -1; | |
2998 | ||
2999 | if (objfile->sect_index_rodata == 0 | |
3000 | && strcmp (first_section_name, ".rodata") != 0) | |
3001 | objfile->sect_index_rodata = -1; | |
c906108c SS |
3002 | } |
3003 | ||
3004 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
3005 | ||
00b5771c | 3006 | static const struct sym_fns xcoff_sym_fns = |
c906108c SS |
3007 | { |
3008 | ||
7a78ae4e | 3009 | /* It is possible that coff and xcoff should be merged as |
c906108c SS |
3010 | they do have fundamental similarities (for example, the extra storage |
3011 | classes used for stabs could presumably be recognized in any COFF file). | |
3012 | However, in addition to obvious things like all the csect hair, there are | |
3013 | some subtler differences between xcoffread.c and coffread.c, notably | |
3014 | the fact that coffread.c has no need to read in all the symbols, but | |
3015 | xcoffread.c reads all the symbols and does in fact randomly access them | |
3016 | (in C_BSTAT and line number processing). */ | |
3017 | ||
3e43a32a MS |
3018 | xcoff_new_init, /* init anything gbl to entire symtab */ |
3019 | xcoff_symfile_init, /* read initial info, setup for sym_read() */ | |
3020 | xcoff_initial_scan, /* read a symbol file into symtab */ | |
3021 | xcoff_symfile_finish, /* finished with file, cleanup */ | |
3022 | xcoff_symfile_offsets, /* xlate offsets ext->int form */ | |
3023 | default_symfile_segments, /* Get segment information from a file. */ | |
3024 | aix_process_linenos, | |
3025 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3026 | NULL, /* sym_probe_fns */ |
c906108c SS |
3027 | }; |
3028 | ||
d5367fe1 JB |
3029 | /* Same as xcoff_get_n_import_files, but for core files. */ |
3030 | ||
3031 | static int | |
3032 | xcoff_get_core_n_import_files (bfd *abfd) | |
3033 | { | |
3034 | asection *sect = bfd_get_section_by_name (abfd, ".ldinfo"); | |
3035 | gdb_byte buf[4]; | |
3036 | file_ptr offset = 0; | |
3037 | int n_entries = 0; | |
3038 | ||
3039 | if (sect == NULL) | |
3040 | return -1; /* Not a core file. */ | |
3041 | ||
fd361982 | 3042 | for (offset = 0; offset < bfd_section_size (sect);) |
d5367fe1 JB |
3043 | { |
3044 | int next; | |
3045 | ||
3046 | n_entries++; | |
3047 | ||
3048 | if (!bfd_get_section_contents (abfd, sect, buf, offset, 4)) | |
3049 | return -1; | |
3050 | next = bfd_get_32 (abfd, buf); | |
3051 | if (next == 0) | |
3052 | break; /* This is the last entry. */ | |
3053 | offset += next; | |
3054 | } | |
3055 | ||
3056 | /* Return the number of entries, excluding the first one, which is | |
3057 | the path to the executable that produced this core file. */ | |
3058 | return n_entries - 1; | |
3059 | } | |
3060 | ||
3061 | /* Return the number of import files (shared libraries) that the given | |
3062 | BFD depends on. Return -1 if this number could not be computed. */ | |
3063 | ||
3064 | int | |
3065 | xcoff_get_n_import_files (bfd *abfd) | |
3066 | { | |
3067 | asection *sect = bfd_get_section_by_name (abfd, ".loader"); | |
3068 | gdb_byte buf[4]; | |
3069 | int l_nimpid; | |
3070 | ||
3071 | /* If the ".loader" section does not exist, the objfile is probably | |
3072 | not an executable. Might be a core file... */ | |
3073 | if (sect == NULL) | |
3074 | return xcoff_get_core_n_import_files (abfd); | |
3075 | ||
3076 | /* The number of entries in the Import Files Table is stored in | |
3077 | field l_nimpid. This field is always at offset 16, and is | |
3078 | always 4 bytes long. Read those 4 bytes. */ | |
3079 | ||
3080 | if (!bfd_get_section_contents (abfd, sect, buf, 16, 4)) | |
3081 | return -1; | |
3082 | l_nimpid = bfd_get_32 (abfd, buf); | |
3083 | ||
3084 | /* By convention, the first entry is the default LIBPATH value | |
3085 | to be used by the system loader, so it does not count towards | |
3086 | the number of import files. */ | |
3087 | return l_nimpid - 1; | |
3088 | } | |
3089 | ||
6c265988 | 3090 | void _initialize_xcoffread (); |
c906108c | 3091 | void |
6c265988 | 3092 | _initialize_xcoffread () |
c906108c | 3093 | { |
c256e171 | 3094 | add_symtab_fns (bfd_target_xcoff_flavour, &xcoff_sym_fns); |
c906108c | 3095 | } |