Commit | Line | Data |
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c906108c | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
b811d2c2 | 2 | Copyright (C) 1986-2020 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" |
c906108c SS |
50 | |
51 | #include "gdb-stabs.h" | |
52 | ||
53 | /* For interface with stabsread.c. */ | |
54 | #include "aout/stab_gnu.h" | |
55 | ||
c906108c SS |
56 | \f |
57 | /* We put a pointer to this structure in the read_symtab_private field | |
58 | of the psymtab. */ | |
59 | ||
c5aa993b JM |
60 | struct symloc |
61 | { | |
c906108c | 62 | |
c5aa993b | 63 | /* First symbol number for this file. */ |
c906108c | 64 | |
c5aa993b | 65 | int first_symnum; |
c906108c | 66 | |
c5aa993b JM |
67 | /* Number of symbols in the section of the symbol table devoted to |
68 | this file's symbols (actually, the section bracketed may contain | |
69 | more than just this file's symbols). If numsyms is 0, the only | |
70 | reason for this thing's existence is the dependency list. Nothing | |
71 | else will happen when it is read in. */ | |
c906108c | 72 | |
c5aa993b | 73 | int numsyms; |
c906108c | 74 | |
3e43a32a MS |
75 | /* Position of the start of the line number information for this |
76 | psymtab. */ | |
c5aa993b JM |
77 | unsigned int lineno_off; |
78 | }; | |
c906108c | 79 | |
581e13c1 | 80 | /* Remember what we deduced to be the source language of this psymtab. */ |
c906108c SS |
81 | |
82 | static enum language psymtab_language = language_unknown; | |
c906108c | 83 | \f |
c5aa993b | 84 | |
581e13c1 | 85 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 86 | |
c5aa993b JM |
87 | struct coff_symbol |
88 | { | |
89 | char *c_name; | |
581e13c1 MS |
90 | int c_symnum; /* Symbol number of this entry. */ |
91 | int c_naux; /* 0 if syment only, 1 if syment + auxent. */ | |
086850b2 | 92 | CORE_ADDR c_value; |
c5aa993b JM |
93 | unsigned char c_sclass; |
94 | int c_secnum; | |
95 | unsigned int c_type; | |
96 | }; | |
c906108c | 97 | |
581e13c1 | 98 | /* Last function's saved coff symbol `cs'. */ |
c906108c SS |
99 | |
100 | static struct coff_symbol fcn_cs_saved; | |
101 | ||
102 | static bfd *symfile_bfd; | |
103 | ||
104 | /* Core address of start and end of text of current source file. | |
105 | This is calculated from the first function seen after a C_FILE | |
581e13c1 | 106 | symbol. */ |
c906108c SS |
107 | |
108 | ||
109 | static CORE_ADDR cur_src_end_addr; | |
110 | ||
111 | /* Core address of the end of the first object file. */ | |
112 | ||
113 | static CORE_ADDR first_object_file_end; | |
114 | ||
581e13c1 | 115 | /* Initial symbol-table-debug-string vector length. */ |
c906108c SS |
116 | |
117 | #define INITIAL_STABVECTOR_LENGTH 40 | |
118 | ||
c906108c SS |
119 | /* Size of a COFF symbol. I think it is always 18, so I'm not sure |
120 | there is any reason not to just use a #define, but might as well | |
121 | ask BFD for the size and store it here, I guess. */ | |
122 | ||
c5aa993b | 123 | static unsigned local_symesz; |
c906108c | 124 | |
02dc647e | 125 | struct xcoff_symfile_info |
c5aa993b | 126 | { |
02dc647e TT |
127 | file_ptr min_lineno_offset {}; /* Where in file lowest line#s are. */ |
128 | file_ptr max_lineno_offset {}; /* 1+last byte of line#s in file. */ | |
c906108c | 129 | |
c5aa993b | 130 | /* Pointer to the string table. */ |
02dc647e | 131 | char *strtbl = nullptr; |
c906108c | 132 | |
c5aa993b | 133 | /* Pointer to debug section. */ |
02dc647e | 134 | char *debugsec = nullptr; |
c906108c | 135 | |
c5aa993b | 136 | /* Pointer to the a.out symbol table. */ |
02dc647e | 137 | char *symtbl = nullptr; |
c906108c | 138 | |
c5aa993b | 139 | /* Number of symbols in symtbl. */ |
02dc647e | 140 | int symtbl_num_syms = 0; |
c906108c | 141 | |
c5aa993b | 142 | /* Offset in data section to TOC anchor. */ |
02dc647e | 143 | CORE_ADDR toc_offset = 0; |
c5aa993b | 144 | }; |
c906108c | 145 | |
02dc647e TT |
146 | /* Key for XCOFF-associated data. */ |
147 | ||
148 | static const struct objfile_key<xcoff_symfile_info> xcoff_objfile_data_key; | |
149 | ||
b8b98ad1 TT |
150 | /* Convenience macro to access the per-objfile XCOFF data. */ |
151 | ||
152 | #define XCOFF_DATA(objfile) \ | |
02dc647e | 153 | xcoff_objfile_data_key.get (objfile) |
b8b98ad1 | 154 | |
316a8b21 TG |
155 | /* XCOFF names for dwarf sections. There is no compressed sections. */ |
156 | ||
157 | static const struct dwarf2_debug_sections dwarf2_xcoff_names = { | |
158 | { ".dwinfo", NULL }, | |
159 | { ".dwabrev", NULL }, | |
160 | { ".dwline", NULL }, | |
161 | { ".dwloc", NULL }, | |
43988095 | 162 | { NULL, NULL }, /* debug_loclists */ |
33f914a1 DE |
163 | /* AIX XCOFF defines one, named DWARF section for macro debug information. |
164 | XLC does not generate debug_macinfo for DWARF4 and below. | |
165 | The section is assigned to debug_macro for DWARF5 and above. */ | |
166 | { NULL, NULL }, | |
167 | { ".dwmac", NULL }, | |
316a8b21 | 168 | { ".dwstr", NULL }, |
43988095 | 169 | { NULL, NULL }, /* debug_line_str */ |
316a8b21 | 170 | { ".dwrnges", NULL }, |
43988095 | 171 | { NULL, NULL }, /* debug_rnglists */ |
33f914a1 | 172 | { ".dwpbtyp", NULL }, |
3019eac3 | 173 | { NULL, NULL }, /* debug_addr */ |
316a8b21 TG |
174 | { ".dwframe", NULL }, |
175 | { NULL, NULL }, /* eh_frame */ | |
24d3216f | 176 | { NULL, NULL }, /* gdb_index */ |
927aa2e7 JK |
177 | { NULL, NULL }, /* debug_names */ |
178 | { NULL, NULL }, /* debug_aranges */ | |
24d3216f | 179 | 23 |
316a8b21 TG |
180 | }; |
181 | ||
23136709 KB |
182 | static void |
183 | bf_notfound_complaint (void) | |
184 | { | |
b98664d3 | 185 | complaint (_("line numbers off, `.bf' symbol not found")); |
23136709 | 186 | } |
c906108c | 187 | |
23136709 KB |
188 | static void |
189 | ef_complaint (int arg1) | |
190 | { | |
b98664d3 | 191 | complaint (_("Mismatched .ef symbol ignored starting at symnum %d"), arg1); |
23136709 | 192 | } |
c906108c | 193 | |
23136709 KB |
194 | static void |
195 | eb_complaint (int arg1) | |
196 | { | |
b98664d3 | 197 | complaint (_("Mismatched .eb symbol ignored starting at symnum %d"), arg1); |
23136709 | 198 | } |
c906108c | 199 | |
b15cc25c | 200 | static void xcoff_initial_scan (struct objfile *, symfile_add_flags); |
c906108c | 201 | |
8dddcb8f TT |
202 | static void scan_xcoff_symtab (minimal_symbol_reader &, |
203 | struct objfile *); | |
c906108c | 204 | |
a121b7c1 | 205 | static const char *xcoff_next_symbol_text (struct objfile *); |
c906108c | 206 | |
a14ed312 | 207 | static void record_include_begin (struct coff_symbol *); |
c906108c SS |
208 | |
209 | static void | |
a14ed312 KB |
210 | enter_line_range (struct subfile *, unsigned, unsigned, |
211 | CORE_ADDR, CORE_ADDR, unsigned *); | |
c906108c | 212 | |
a14ed312 | 213 | static void init_stringtab (bfd *, file_ptr, struct objfile *); |
c906108c | 214 | |
a14ed312 | 215 | static void xcoff_symfile_init (struct objfile *); |
c906108c | 216 | |
a14ed312 | 217 | static void xcoff_new_init (struct objfile *); |
c906108c | 218 | |
a14ed312 | 219 | static void xcoff_symfile_finish (struct objfile *); |
c906108c | 220 | |
a14ed312 | 221 | static char *coff_getfilename (union internal_auxent *, struct objfile *); |
c906108c | 222 | |
a14ed312 | 223 | static void read_symbol (struct internal_syment *, int); |
c906108c | 224 | |
a14ed312 | 225 | static int read_symbol_lineno (int); |
c906108c | 226 | |
470d5666 | 227 | static CORE_ADDR read_symbol_nvalue (int); |
c906108c | 228 | |
a14ed312 KB |
229 | static struct symbol *process_xcoff_symbol (struct coff_symbol *, |
230 | struct objfile *); | |
c906108c | 231 | |
5c80ed9d | 232 | static void read_xcoff_symtab (struct objfile *, struct partial_symtab *); |
c906108c SS |
233 | |
234 | #if 0 | |
a14ed312 | 235 | static void add_stab_to_list (char *, struct pending_stabs **); |
c906108c SS |
236 | #endif |
237 | ||
a14ed312 | 238 | static struct linetable *arrange_linetable (struct linetable *); |
c906108c | 239 | |
a14ed312 | 240 | static void record_include_end (struct coff_symbol *); |
c906108c | 241 | |
a14ed312 | 242 | static void process_linenos (CORE_ADDR, CORE_ADDR); |
c906108c | 243 | \f |
c5aa993b | 244 | |
c906108c SS |
245 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
246 | code. */ | |
a14ed312 KB |
247 | static int secnum_to_section (int, struct objfile *); |
248 | static asection *secnum_to_bfd_section (int, struct objfile *); | |
c906108c | 249 | |
c5aa993b JM |
250 | struct find_targ_sec_arg |
251 | { | |
252 | int targ_index; | |
253 | int *resultp; | |
254 | asection **bfd_sect; | |
b8fbeb18 | 255 | struct objfile *objfile; |
c5aa993b | 256 | }; |
c906108c | 257 | |
a14ed312 | 258 | static void find_targ_sec (bfd *, asection *, void *); |
c906108c | 259 | |
c5aa993b | 260 | static void |
4efb68b1 | 261 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 262 | { |
c5aa993b | 263 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
b8fbeb18 | 264 | struct objfile *objfile = args->objfile; |
a109c7c1 | 265 | |
c906108c SS |
266 | if (sect->target_index == args->targ_index) |
267 | { | |
268 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
fd361982 | 269 | if (bfd_section_flags (sect) & SEC_CODE) |
b8fbeb18 | 270 | *args->resultp = SECT_OFF_TEXT (objfile); |
fd361982 | 271 | else if (bfd_section_flags (sect) & SEC_LOAD) |
b8fbeb18 | 272 | *args->resultp = SECT_OFF_DATA (objfile); |
c906108c | 273 | else |
65cf3563 | 274 | *args->resultp = gdb_bfd_section_index (abfd, sect); |
c906108c SS |
275 | *args->bfd_sect = sect; |
276 | } | |
277 | } | |
278 | ||
ec92004f JB |
279 | /* Search all BFD sections for the section whose target_index is |
280 | equal to N_SCNUM. Set *BFD_SECT to that section. The section's | |
281 | associated index in the objfile's section_offset table is also | |
282 | stored in *SECNUM. | |
283 | ||
284 | If no match is found, *BFD_SECT is set to NULL, and *SECNUM | |
285 | is set to the text section's number. */ | |
a109c7c1 | 286 | |
ec92004f JB |
287 | static void |
288 | xcoff_secnum_to_sections (int n_scnum, struct objfile *objfile, | |
289 | asection **bfd_sect, int *secnum) | |
290 | { | |
c906108c | 291 | struct find_targ_sec_arg args; |
ec92004f JB |
292 | |
293 | args.targ_index = n_scnum; | |
294 | args.resultp = secnum; | |
295 | args.bfd_sect = bfd_sect; | |
b8fbeb18 | 296 | args.objfile = objfile; |
ec92004f JB |
297 | |
298 | *bfd_sect = NULL; | |
299 | *secnum = SECT_OFF_TEXT (objfile); | |
300 | ||
c906108c | 301 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
c906108c SS |
302 | } |
303 | ||
ec92004f JB |
304 | /* Return the section number (SECT_OFF_*) that N_SCNUM points to. */ |
305 | ||
306 | static int | |
307 | secnum_to_section (int n_scnum, struct objfile *objfile) | |
308 | { | |
309 | int secnum; | |
310 | asection *ignored; | |
311 | ||
312 | xcoff_secnum_to_sections (n_scnum, objfile, &ignored, &secnum); | |
313 | return secnum; | |
314 | } | |
315 | ||
316 | /* Return the BFD section that N_SCNUM points to. */ | |
317 | ||
c906108c | 318 | static asection * |
ec92004f | 319 | secnum_to_bfd_section (int n_scnum, struct objfile *objfile) |
c906108c | 320 | { |
ec92004f JB |
321 | int ignored; |
322 | asection *bfd_sect; | |
a109c7c1 | 323 | |
ec92004f JB |
324 | xcoff_secnum_to_sections (n_scnum, objfile, &bfd_sect, &ignored); |
325 | return bfd_sect; | |
c906108c SS |
326 | } |
327 | \f | |
581e13c1 | 328 | /* add a given stab string into given stab vector. */ |
c906108c SS |
329 | |
330 | #if 0 | |
331 | ||
332 | static void | |
fba45db2 | 333 | add_stab_to_list (char *stabname, struct pending_stabs **stabvector) |
c906108c | 334 | { |
c5aa993b JM |
335 | if (*stabvector == NULL) |
336 | { | |
337 | *stabvector = (struct pending_stabs *) | |
338 | xmalloc (sizeof (struct pending_stabs) + | |
339 | INITIAL_STABVECTOR_LENGTH * sizeof (char *)); | |
340 | (*stabvector)->count = 0; | |
341 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
342 | } | |
343 | else if ((*stabvector)->count >= (*stabvector)->length) | |
344 | { | |
345 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
346 | *stabvector = (struct pending_stabs *) | |
347 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + | |
3e43a32a | 348 | (*stabvector)->length * sizeof (char *)); |
c5aa993b JM |
349 | } |
350 | (*stabvector)->stab[(*stabvector)->count++] = stabname; | |
c906108c SS |
351 | } |
352 | ||
353 | #endif | |
c5aa993b | 354 | \f/* *INDENT-OFF* */ |
c906108c SS |
355 | /* Linenos are processed on a file-by-file basis. |
356 | ||
357 | Two reasons: | |
358 | ||
c5aa993b | 359 | 1) xlc (IBM's native c compiler) postpones static function code |
581e13c1 | 360 | emission to the end of a compilation unit. This way it can |
c5aa993b | 361 | determine if those functions (statics) are needed or not, and |
581e13c1 | 362 | can do some garbage collection (I think). This makes line |
c5aa993b JM |
363 | numbers and corresponding addresses unordered, and we end up |
364 | with a line table like: | |
365 | ||
366 | ||
367 | lineno addr | |
368 | foo() 10 0x100 | |
369 | 20 0x200 | |
370 | 30 0x300 | |
371 | ||
372 | foo3() 70 0x400 | |
373 | 80 0x500 | |
374 | 90 0x600 | |
375 | ||
376 | static foo2() | |
377 | 40 0x700 | |
378 | 50 0x800 | |
379 | 60 0x900 | |
380 | ||
381 | and that breaks gdb's binary search on line numbers, if the | |
581e13c1 | 382 | above table is not sorted on line numbers. And that sort |
c5aa993b JM |
383 | should be on function based, since gcc can emit line numbers |
384 | like: | |
385 | ||
386 | 10 0x100 - for the init/test part of a for stmt. | |
387 | 20 0x200 | |
388 | 30 0x300 | |
389 | 10 0x400 - for the increment part of a for stmt. | |
390 | ||
581e13c1 | 391 | arrange_linetable() will do this sorting. |
c5aa993b JM |
392 | |
393 | 2) aix symbol table might look like: | |
394 | ||
395 | c_file // beginning of a new file | |
396 | .bi // beginning of include file | |
397 | .ei // end of include file | |
398 | .bi | |
399 | .ei | |
400 | ||
401 | basically, .bi/.ei pairs do not necessarily encapsulate | |
581e13c1 | 402 | their scope. They need to be recorded, and processed later |
c5aa993b JM |
403 | on when we come the end of the compilation unit. |
404 | Include table (inclTable) and process_linenos() handle | |
405 | that. */ | |
9846de1b | 406 | /* *INDENT-ON* */ |
c906108c | 407 | |
c5aa993b | 408 | |
581e13c1 MS |
409 | /* Given a line table with function entries are marked, arrange its |
410 | functions in ascending order and strip off function entry markers | |
411 | and return it in a newly created table. If the old one is good | |
412 | enough, return the old one. */ | |
c906108c SS |
413 | /* FIXME: I think all this stuff can be replaced by just passing |
414 | sort_linevec = 1 to end_symtab. */ | |
415 | ||
416 | static struct linetable * | |
b095261a | 417 | arrange_linetable (struct linetable *oldLineTb) |
c906108c | 418 | { |
c5aa993b JM |
419 | int ii, jj, newline, /* new line count */ |
420 | function_count; /* # of functions */ | |
c906108c | 421 | |
c5aa993b JM |
422 | struct linetable_entry *fentry; /* function entry vector */ |
423 | int fentry_size; /* # of function entries */ | |
424 | struct linetable *newLineTb; /* new line table */ | |
a85c52f2 | 425 | int extra_lines = 0; |
c906108c SS |
426 | |
427 | #define NUM_OF_FUNCTIONS 20 | |
428 | ||
429 | fentry_size = NUM_OF_FUNCTIONS; | |
8d749320 | 430 | fentry = XNEWVEC (struct linetable_entry, fentry_size); |
c906108c | 431 | |
c5aa993b JM |
432 | for (function_count = 0, ii = 0; ii < oldLineTb->nitems; ++ii) |
433 | { | |
c5aa993b | 434 | if (oldLineTb->item[ii].line == 0) |
581e13c1 | 435 | { /* Function entry found. */ |
c5aa993b | 436 | if (function_count >= fentry_size) |
581e13c1 | 437 | { /* Make sure you have room. */ |
c5aa993b JM |
438 | fentry_size *= 2; |
439 | fentry = (struct linetable_entry *) | |
3e43a32a MS |
440 | xrealloc (fentry, |
441 | fentry_size * sizeof (struct linetable_entry)); | |
c5aa993b JM |
442 | } |
443 | fentry[function_count].line = ii; | |
444 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
445 | ++function_count; | |
a85c52f2 UW |
446 | |
447 | /* If the function was compiled with XLC, we may have to add an | |
448 | extra line entry later. Reserve space for that. */ | |
449 | if (ii + 1 < oldLineTb->nitems | |
450 | && oldLineTb->item[ii].pc != oldLineTb->item[ii + 1].pc) | |
451 | extra_lines++; | |
c5aa993b | 452 | } |
c906108c | 453 | } |
c906108c | 454 | |
c5aa993b JM |
455 | if (function_count == 0) |
456 | { | |
b8c9b27d | 457 | xfree (fentry); |
c5aa993b JM |
458 | return oldLineTb; |
459 | } | |
c906108c | 460 | else if (function_count > 1) |
39ef2f62 CB |
461 | std::sort (fentry, fentry + function_count, |
462 | [] (const linetable_entry <e1, const linetable_entry& lte2) | |
463 | { return lte1.pc < lte2.pc; }); | |
c906108c | 464 | |
581e13c1 | 465 | /* Allocate a new line table. */ |
c906108c SS |
466 | newLineTb = (struct linetable *) |
467 | xmalloc | |
c5aa993b | 468 | (sizeof (struct linetable) + |
a85c52f2 | 469 | (oldLineTb->nitems - function_count + extra_lines) * sizeof (struct linetable_entry)); |
c906108c | 470 | |
581e13c1 MS |
471 | /* If line table does not start with a function beginning, copy up until |
472 | a function begin. */ | |
c906108c SS |
473 | |
474 | newline = 0; | |
475 | if (oldLineTb->item[0].line != 0) | |
c5aa993b JM |
476 | for (newline = 0; |
477 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
c906108c SS |
478 | newLineTb->item[newline] = oldLineTb->item[newline]; |
479 | ||
581e13c1 | 480 | /* Now copy function lines one by one. */ |
c906108c | 481 | |
c5aa993b JM |
482 | for (ii = 0; ii < function_count; ++ii) |
483 | { | |
a85c52f2 UW |
484 | /* If the function was compiled with XLC, we may have to add an |
485 | extra line to cover the function prologue. */ | |
486 | jj = fentry[ii].line; | |
487 | if (jj + 1 < oldLineTb->nitems | |
488 | && oldLineTb->item[jj].pc != oldLineTb->item[jj + 1].pc) | |
489 | { | |
490 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
491 | newLineTb->item[newline].line = oldLineTb->item[jj + 1].line; | |
492 | newline++; | |
493 | } | |
494 | ||
c5aa993b JM |
495 | for (jj = fentry[ii].line + 1; |
496 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
497 | ++jj, ++newline) | |
498 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
499 | } | |
b8c9b27d | 500 | xfree (fentry); |
a85c52f2 UW |
501 | /* The number of items in the line table must include these |
502 | extra lines which were added in case of XLC compiled functions. */ | |
503 | newLineTb->nitems = oldLineTb->nitems - function_count + extra_lines; | |
c5aa993b JM |
504 | return newLineTb; |
505 | } | |
c906108c SS |
506 | |
507 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
581e13c1 | 508 | following `IncludeChain'. At the end of each symtab (end_symtab), |
c906108c | 509 | we will determine if we should create additional symtab's to |
581e13c1 | 510 | represent if (the include files. */ |
c906108c SS |
511 | |
512 | ||
c5aa993b JM |
513 | typedef struct _inclTable |
514 | { | |
515 | char *name; /* include filename */ | |
c906108c SS |
516 | |
517 | /* Offsets to the line table. end points to the last entry which is | |
518 | part of this include file. */ | |
c5aa993b JM |
519 | int begin, end; |
520 | ||
c906108c | 521 | struct subfile *subfile; |
581e13c1 | 522 | unsigned funStartLine; /* Start line # of its function. */ |
c5aa993b JM |
523 | } |
524 | InclTable; | |
c906108c SS |
525 | |
526 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
c5aa993b JM |
527 | static InclTable *inclTable; /* global include table */ |
528 | static int inclIndx; /* last entry to table */ | |
529 | static int inclLength; /* table length */ | |
530 | static int inclDepth; /* nested include depth */ | |
c906108c | 531 | |
a14ed312 | 532 | static void allocate_include_entry (void); |
c906108c SS |
533 | |
534 | static void | |
fba45db2 | 535 | record_include_begin (struct coff_symbol *cs) |
c906108c SS |
536 | { |
537 | if (inclDepth) | |
538 | { | |
539 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
c5aa993b | 540 | of course, but in corresponding .s files.). */ |
c906108c SS |
541 | |
542 | /* This can happen with old versions of GCC. | |
c5aa993b JM |
543 | GCC 2.3.3-930426 does not exhibit this on a test case which |
544 | a user said produced the message for him. */ | |
b98664d3 | 545 | complaint (_("Nested C_BINCL symbols")); |
c906108c SS |
546 | } |
547 | ++inclDepth; | |
548 | ||
549 | allocate_include_entry (); | |
550 | ||
c5aa993b JM |
551 | inclTable[inclIndx].name = cs->c_name; |
552 | inclTable[inclIndx].begin = cs->c_value; | |
c906108c SS |
553 | } |
554 | ||
555 | static void | |
fba45db2 | 556 | record_include_end (struct coff_symbol *cs) |
c906108c | 557 | { |
c5aa993b | 558 | InclTable *pTbl; |
c906108c SS |
559 | |
560 | if (inclDepth == 0) | |
561 | { | |
b98664d3 | 562 | complaint (_("Mismatched C_BINCL/C_EINCL pair")); |
c906108c SS |
563 | } |
564 | ||
565 | allocate_include_entry (); | |
566 | ||
c5aa993b | 567 | pTbl = &inclTable[inclIndx]; |
c906108c SS |
568 | pTbl->end = cs->c_value; |
569 | ||
570 | --inclDepth; | |
571 | ++inclIndx; | |
572 | } | |
573 | ||
574 | static void | |
fba45db2 | 575 | allocate_include_entry (void) |
c906108c SS |
576 | { |
577 | if (inclTable == NULL) | |
578 | { | |
8d749320 | 579 | inclTable = XCNEWVEC (InclTable, INITIAL_INCLUDE_TABLE_LENGTH); |
c906108c SS |
580 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; |
581 | inclIndx = 0; | |
582 | } | |
583 | else if (inclIndx >= inclLength) | |
584 | { | |
585 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
8d749320 | 586 | inclTable = XRESIZEVEC (InclTable, inclTable, inclLength); |
c5aa993b JM |
587 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, |
588 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
c906108c SS |
589 | } |
590 | } | |
591 | ||
592 | /* Global variable to pass the psymtab down to all the routines involved | |
593 | in psymtab to symtab processing. */ | |
594 | static struct partial_symtab *this_symtab_psymtab; | |
595 | ||
5c80ed9d TT |
596 | /* Objfile related to this_symtab_psymtab; set at the same time. */ |
597 | static struct objfile *this_symtab_objfile; | |
598 | ||
c906108c | 599 | /* given the start and end addresses of a compilation unit (or a csect, |
581e13c1 | 600 | at times) process its lines and create appropriate line vectors. */ |
c906108c SS |
601 | |
602 | static void | |
fba45db2 | 603 | process_linenos (CORE_ADDR start, CORE_ADDR end) |
c906108c SS |
604 | { |
605 | int offset, ii; | |
b8b98ad1 | 606 | file_ptr max_offset |
5c80ed9d | 607 | = XCOFF_DATA (this_symtab_objfile)->max_lineno_offset; |
c906108c SS |
608 | |
609 | /* subfile structure for the main compilation unit. */ | |
610 | struct subfile main_subfile; | |
611 | ||
612 | /* In the main source file, any time we see a function entry, we | |
613 | reset this variable to function's absolute starting line number. | |
614 | All the following line numbers in the function are relative to | |
615 | this, and we record absolute line numbers in record_line(). */ | |
616 | ||
617 | unsigned int main_source_baseline = 0; | |
618 | ||
619 | unsigned *firstLine; | |
620 | ||
621 | offset = | |
c5aa993b | 622 | ((struct symloc *) this_symtab_psymtab->read_symtab_private)->lineno_off; |
c906108c SS |
623 | if (offset == 0) |
624 | goto return_after_cleanup; | |
625 | ||
626 | memset (&main_subfile, '\0', sizeof (main_subfile)); | |
627 | ||
628 | if (inclIndx == 0) | |
581e13c1 MS |
629 | /* All source lines were in the main source file. None in include |
630 | files. */ | |
c906108c | 631 | |
c5aa993b JM |
632 | enter_line_range (&main_subfile, offset, 0, start, end, |
633 | &main_source_baseline); | |
c906108c SS |
634 | |
635 | else | |
636 | { | |
637 | /* There was source with line numbers in include files. */ | |
7a78ae4e ND |
638 | |
639 | int linesz = | |
5c80ed9d | 640 | coff_data (this_symtab_objfile->obfd)->local_linesz; |
c906108c | 641 | main_source_baseline = 0; |
7a78ae4e | 642 | |
c5aa993b | 643 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c SS |
644 | { |
645 | struct subfile *tmpSubfile; | |
646 | ||
647 | /* If there is main file source before include file, enter it. */ | |
648 | if (offset < inclTable[ii].begin) | |
649 | { | |
650 | enter_line_range | |
7a78ae4e | 651 | (&main_subfile, offset, inclTable[ii].begin - linesz, |
c906108c SS |
652 | start, 0, &main_source_baseline); |
653 | } | |
654 | ||
46212e0b | 655 | if (strcmp (inclTable[ii].name, get_last_source_file ()) == 0) |
c5933f6d JB |
656 | { |
657 | /* The entry in the include table refers to the main source | |
581e13c1 | 658 | file. Add the lines to the main subfile. */ |
c5933f6d JB |
659 | |
660 | main_source_baseline = inclTable[ii].funStartLine; | |
661 | enter_line_range | |
662 | (&main_subfile, inclTable[ii].begin, inclTable[ii].end, | |
663 | start, 0, &main_source_baseline); | |
664 | inclTable[ii].subfile = &main_subfile; | |
665 | } | |
666 | else | |
667 | { | |
c5933f6d | 668 | /* Have a new subfile for the include file. */ |
c906108c | 669 | |
8d749320 | 670 | tmpSubfile = inclTable[ii].subfile = XNEW (struct subfile); |
c906108c | 671 | |
c5933f6d JB |
672 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
673 | firstLine = &(inclTable[ii].funStartLine); | |
674 | ||
675 | /* Enter include file's lines now. */ | |
676 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
677 | inclTable[ii].end, start, 0, firstLine); | |
678 | } | |
c906108c SS |
679 | |
680 | if (offset <= inclTable[ii].end) | |
7a78ae4e | 681 | offset = inclTable[ii].end + linesz; |
c906108c SS |
682 | } |
683 | ||
684 | /* All the include files' line have been processed at this point. Now, | |
c5aa993b | 685 | enter remaining lines of the main file, if any left. */ |
7a78ae4e | 686 | if (offset < max_offset + 1 - linesz) |
c906108c | 687 | { |
c5aa993b | 688 | enter_line_range (&main_subfile, offset, 0, start, end, |
c906108c SS |
689 | &main_source_baseline); |
690 | } | |
691 | } | |
692 | ||
693 | /* Process main file's line numbers. */ | |
694 | if (main_subfile.line_vector) | |
695 | { | |
696 | struct linetable *lineTb, *lv; | |
697 | ||
698 | lv = main_subfile.line_vector; | |
699 | ||
581e13c1 MS |
700 | /* Line numbers are not necessarily ordered. xlc compilation will |
701 | put static function to the end. */ | |
c906108c | 702 | |
3c65e5b3 | 703 | struct subfile *current_subfile = get_current_subfile (); |
c906108c SS |
704 | lineTb = arrange_linetable (lv); |
705 | if (lv == lineTb) | |
706 | { | |
707 | current_subfile->line_vector = (struct linetable *) | |
708 | xrealloc (lv, (sizeof (struct linetable) | |
709 | + lv->nitems * sizeof (struct linetable_entry))); | |
710 | } | |
711 | else | |
712 | { | |
b8c9b27d | 713 | xfree (lv); |
c906108c SS |
714 | current_subfile->line_vector = lineTb; |
715 | } | |
716 | ||
c5aa993b | 717 | current_subfile->line_vector_length = |
c906108c SS |
718 | current_subfile->line_vector->nitems; |
719 | } | |
720 | ||
721 | /* Now, process included files' line numbers. */ | |
722 | ||
c5aa993b | 723 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c | 724 | { |
c5933f6d | 725 | if (inclTable[ii].subfile != ((struct subfile *) &main_subfile) |
3e43a32a MS |
726 | && (inclTable[ii].subfile)->line_vector) /* Useless if!!! |
727 | FIXMEmgo */ | |
c906108c SS |
728 | { |
729 | struct linetable *lineTb, *lv; | |
730 | ||
731 | lv = (inclTable[ii].subfile)->line_vector; | |
732 | ||
581e13c1 MS |
733 | /* Line numbers are not necessarily ordered. xlc compilation will |
734 | put static function to the end. */ | |
c906108c SS |
735 | |
736 | lineTb = arrange_linetable (lv); | |
737 | ||
738 | push_subfile (); | |
739 | ||
740 | /* For the same include file, we might want to have more than one | |
741 | subfile. This happens if we have something like: | |
742 | ||
c5aa993b JM |
743 | ...... |
744 | #include "foo.h" | |
745 | ...... | |
746 | #include "foo.h" | |
747 | ...... | |
c906108c | 748 | |
581e13c1 | 749 | while foo.h including code in it. (stupid but possible) |
c906108c SS |
750 | Since start_subfile() looks at the name and uses an |
751 | existing one if finds, we need to provide a fake name and | |
752 | fool it. */ | |
753 | ||
754 | #if 0 | |
4d663531 | 755 | start_subfile (inclTable[ii].name); |
c906108c SS |
756 | #else |
757 | { | |
758 | /* Pick a fake name that will produce the same results as this | |
759 | one when passed to deduce_language_from_filename. Kludge on | |
760 | top of kludge. */ | |
a121b7c1 | 761 | const char *fakename = strrchr (inclTable[ii].name, '.'); |
a109c7c1 | 762 | |
c906108c SS |
763 | if (fakename == NULL) |
764 | fakename = " ?"; | |
4d663531 | 765 | start_subfile (fakename); |
3c65e5b3 | 766 | xfree (get_current_subfile ()->name); |
c906108c | 767 | } |
3c65e5b3 | 768 | struct subfile *current_subfile = get_current_subfile (); |
c2d11a7d | 769 | current_subfile->name = xstrdup (inclTable[ii].name); |
c906108c SS |
770 | #endif |
771 | ||
772 | if (lv == lineTb) | |
773 | { | |
774 | current_subfile->line_vector = | |
775 | (struct linetable *) xrealloc | |
c5aa993b JM |
776 | (lv, (sizeof (struct linetable) |
777 | + lv->nitems * sizeof (struct linetable_entry))); | |
c906108c SS |
778 | |
779 | } | |
780 | else | |
781 | { | |
b8c9b27d | 782 | xfree (lv); |
c906108c SS |
783 | current_subfile->line_vector = lineTb; |
784 | } | |
785 | ||
c5aa993b | 786 | current_subfile->line_vector_length = |
c906108c | 787 | current_subfile->line_vector->nitems; |
4d663531 | 788 | start_subfile (pop_subfile ()); |
c906108c SS |
789 | } |
790 | } | |
791 | ||
c5aa993b | 792 | return_after_cleanup: |
c906108c SS |
793 | |
794 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
795 | inclIndx = 0; | |
c906108c SS |
796 | } |
797 | ||
c295b2e5 | 798 | static void |
f56ce883 | 799 | aix_process_linenos (struct objfile *objfile) |
c906108c | 800 | { |
316a8b21 TG |
801 | /* There is no linenos to read if there are only dwarf info. */ |
802 | if (this_symtab_psymtab == NULL) | |
803 | return; | |
804 | ||
581e13c1 | 805 | /* Process line numbers and enter them into line vector. */ |
2c99ee5c | 806 | process_linenos (get_last_source_start_addr (), cur_src_end_addr); |
c906108c SS |
807 | } |
808 | ||
809 | ||
810 | /* Enter a given range of lines into the line vector. | |
811 | can be called in the following two ways: | |
3e43a32a MS |
812 | enter_line_range (subfile, beginoffset, endoffset, |
813 | startaddr, 0, firstLine) or | |
814 | enter_line_range (subfile, beginoffset, 0, | |
815 | startaddr, endaddr, firstLine) | |
c906108c SS |
816 | |
817 | endoffset points to the last line table entry that we should pay | |
818 | attention to. */ | |
819 | ||
820 | static void | |
3e43a32a MS |
821 | enter_line_range (struct subfile *subfile, unsigned beginoffset, |
822 | unsigned endoffset, /* offsets to line table */ | |
fba45db2 KB |
823 | CORE_ADDR startaddr, /* offsets to line table */ |
824 | CORE_ADDR endaddr, unsigned *firstLine) | |
c906108c | 825 | { |
5c80ed9d | 826 | struct objfile *objfile = this_symtab_objfile; |
fbf65064 | 827 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
828 | unsigned int curoffset; |
829 | CORE_ADDR addr; | |
7a78ae4e | 830 | void *ext_lnno; |
c906108c SS |
831 | struct internal_lineno int_lnno; |
832 | unsigned int limit_offset; | |
833 | bfd *abfd; | |
7a78ae4e | 834 | int linesz; |
c906108c SS |
835 | |
836 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) | |
837 | return; | |
838 | curoffset = beginoffset; | |
b8b98ad1 | 839 | limit_offset = XCOFF_DATA (objfile)->max_lineno_offset; |
c906108c SS |
840 | |
841 | if (endoffset != 0) | |
842 | { | |
843 | if (endoffset >= limit_offset) | |
844 | { | |
b98664d3 | 845 | complaint (_("Bad line table offset in C_EINCL directive")); |
c906108c SS |
846 | return; |
847 | } | |
848 | limit_offset = endoffset; | |
849 | } | |
850 | else | |
851 | limit_offset -= 1; | |
7a78ae4e | 852 | |
fbf65064 | 853 | abfd = objfile->obfd; |
7a78ae4e ND |
854 | linesz = coff_data (abfd)->local_linesz; |
855 | ext_lnno = alloca (linesz); | |
c906108c SS |
856 | |
857 | while (curoffset <= limit_offset) | |
858 | { | |
859 | bfd_seek (abfd, curoffset, SEEK_SET); | |
3a42e9d0 | 860 | bfd_bread (ext_lnno, linesz, abfd); |
7a78ae4e | 861 | bfd_coff_swap_lineno_in (abfd, ext_lnno, &int_lnno); |
c906108c SS |
862 | |
863 | /* Find the address this line represents. */ | |
864 | addr = (int_lnno.l_lnno | |
865 | ? int_lnno.l_addr.l_paddr | |
866 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
6a053cb1 | 867 | addr += objfile->section_offsets[SECT_OFF_TEXT (objfile)]; |
c906108c SS |
868 | |
869 | if (addr < startaddr || (endaddr && addr >= endaddr)) | |
870 | return; | |
871 | ||
872 | if (int_lnno.l_lnno == 0) | |
873 | { | |
874 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
fbf65064 | 875 | record_line (subfile, 0, gdbarch_addr_bits_remove (gdbarch, addr)); |
c906108c SS |
876 | --(*firstLine); |
877 | } | |
878 | else | |
fbf65064 UW |
879 | record_line (subfile, *firstLine + int_lnno.l_lnno, |
880 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
7a78ae4e | 881 | curoffset += linesz; |
c906108c SS |
882 | } |
883 | } | |
884 | ||
885 | ||
886 | /* Save the vital information for use when closing off the current file. | |
887 | NAME is the file name the symbols came from, START_ADDR is the first | |
888 | text address for the file, and SIZE is the number of bytes of text. */ | |
889 | ||
890 | #define complete_symtab(name, start_addr) { \ | |
46212e0b | 891 | set_last_source_file (name); \ |
2c99ee5c | 892 | set_last_source_start_addr (start_addr); \ |
c906108c SS |
893 | } |
894 | ||
895 | ||
896 | /* Refill the symbol table input buffer | |
897 | and set the variables that control fetching entries from it. | |
898 | Reports an error if no data available. | |
899 | This function can read past the end of the symbol table | |
900 | (into the string table) but this does no harm. */ | |
901 | ||
8dddcb8f | 902 | /* Create a new minimal symbol (using record_with_info). |
ec92004f | 903 | |
4d1eb6b4 | 904 | Creation of all new minimal symbols should go through this function |
8dddcb8f | 905 | rather than calling the various record functions in order |
4d1eb6b4 JB |
906 | to make sure that all symbol addresses get properly relocated. |
907 | ||
ec92004f JB |
908 | Arguments are: |
909 | ||
910 | NAME - the symbol's name (but if NAME starts with a period, that | |
911 | leading period is discarded). | |
4d1eb6b4 JB |
912 | ADDRESS - the symbol's address, prior to relocation. This function |
913 | relocates the address before recording the minimal symbol. | |
ec92004f JB |
914 | MS_TYPE - the symbol's type. |
915 | N_SCNUM - the symbol's XCOFF section number. | |
916 | OBJFILE - the objfile associated with the minimal symbol. */ | |
c906108c | 917 | |
ec92004f | 918 | static void |
8dddcb8f TT |
919 | record_minimal_symbol (minimal_symbol_reader &reader, |
920 | const char *name, CORE_ADDR address, | |
ec92004f JB |
921 | enum minimal_symbol_type ms_type, |
922 | int n_scnum, | |
923 | struct objfile *objfile) | |
924 | { | |
ec92004f JB |
925 | if (name[0] == '.') |
926 | ++name; | |
927 | ||
8dddcb8f TT |
928 | reader.record_with_info (name, address, ms_type, |
929 | secnum_to_section (n_scnum, objfile)); | |
ec92004f | 930 | } |
c906108c | 931 | |
581e13c1 MS |
932 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
933 | nested. At any given time, a symbol can only be in one static block. | |
934 | This is the base address of current static block, zero if non exists. */ | |
c5aa993b | 935 | |
c906108c SS |
936 | static int static_block_base = 0; |
937 | ||
938 | /* Section number for the current static block. */ | |
939 | ||
940 | static int static_block_section = -1; | |
941 | ||
581e13c1 | 942 | /* true if space for symbol name has been allocated. */ |
c906108c SS |
943 | |
944 | static int symname_alloced = 0; | |
945 | ||
946 | /* Next symbol to read. Pointer into raw seething symbol table. */ | |
947 | ||
948 | static char *raw_symbol; | |
949 | ||
950 | /* This is the function which stabsread.c calls to get symbol | |
951 | continuations. */ | |
952 | ||
a121b7c1 | 953 | static const char * |
fba45db2 | 954 | xcoff_next_symbol_text (struct objfile *objfile) |
c906108c SS |
955 | { |
956 | struct internal_syment symbol; | |
a121b7c1 | 957 | const char *retval; |
a109c7c1 | 958 | |
581e13c1 | 959 | /* FIXME: is this the same as the passed arg? */ |
5c80ed9d TT |
960 | if (this_symtab_objfile) |
961 | objfile = this_symtab_objfile; | |
c906108c SS |
962 | |
963 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); | |
964 | if (symbol.n_zeroes) | |
965 | { | |
b98664d3 | 966 | complaint (_("Unexpected symbol continuation")); |
c906108c SS |
967 | |
968 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 969 | code does something reasonable. */ |
c906108c SS |
970 | retval = ""; |
971 | } | |
972 | else if (symbol.n_sclass & 0x80) | |
973 | { | |
b8b98ad1 | 974 | retval = XCOFF_DATA (objfile)->debugsec + symbol.n_offset; |
3e43a32a | 975 | raw_symbol += coff_data (objfile->obfd)->local_symesz; |
c906108c SS |
976 | ++symnum; |
977 | } | |
978 | else | |
979 | { | |
b98664d3 | 980 | complaint (_("Unexpected symbol continuation")); |
c906108c SS |
981 | |
982 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 983 | code does something reasonable. */ |
c906108c SS |
984 | retval = ""; |
985 | } | |
986 | return retval; | |
987 | } | |
988 | ||
989 | /* Read symbols for a given partial symbol table. */ | |
990 | ||
991 | static void | |
5c80ed9d | 992 | read_xcoff_symtab (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 993 | { |
c906108c | 994 | bfd *abfd = objfile->obfd; |
581e13c1 | 995 | char *raw_auxptr; /* Pointer to first raw aux entry for sym. */ |
02dc647e | 996 | struct xcoff_symfile_info *xcoff = XCOFF_DATA (objfile); |
b8b98ad1 TT |
997 | char *strtbl = xcoff->strtbl; |
998 | char *debugsec = xcoff->debugsec; | |
554d387d | 999 | const char *debugfmt = bfd_xcoff_is_xcoff64 (abfd) ? "XCOFF64" : "XCOFF"; |
c906108c SS |
1000 | |
1001 | struct internal_syment symbol[1]; | |
1002 | union internal_auxent main_aux; | |
1003 | struct coff_symbol cs[1]; | |
1004 | CORE_ADDR file_start_addr = 0; | |
1005 | CORE_ADDR file_end_addr = 0; | |
1006 | ||
1007 | int next_file_symnum = -1; | |
1008 | unsigned int max_symnum; | |
1009 | int just_started = 1; | |
1010 | int depth = 0; | |
086850b2 | 1011 | CORE_ADDR fcn_start_addr = 0; |
b9718991 | 1012 | enum language pst_symtab_language; |
c906108c | 1013 | |
238ae9af | 1014 | struct coff_symbol fcn_stab_saved = { 0 }; |
c906108c | 1015 | |
581e13c1 | 1016 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
3672b1be | 1017 | union internal_auxent fcn_aux_saved = main_aux; |
fe978cb0 | 1018 | struct context_stack *newobj; |
c906108c | 1019 | |
9a1e3f00 | 1020 | const char *filestring = pst->filename; /* Name of the current file. */ |
c906108c | 1021 | |
40301fb7 | 1022 | const char *last_csect_name; /* Last seen csect's name. */ |
c906108c SS |
1023 | |
1024 | this_symtab_psymtab = pst; | |
5c80ed9d | 1025 | this_symtab_objfile = objfile; |
c906108c SS |
1026 | |
1027 | /* Get the appropriate COFF "constants" related to the file we're | |
581e13c1 | 1028 | handling. */ |
c906108c SS |
1029 | local_symesz = coff_data (abfd)->local_symesz; |
1030 | ||
46212e0b | 1031 | set_last_source_file (NULL); |
c906108c | 1032 | last_csect_name = 0; |
b9718991 | 1033 | pst_symtab_language = deduce_language_from_filename (filestring); |
c906108c SS |
1034 | |
1035 | start_stabs (); | |
cafb3438 | 1036 | start_symtab (objfile, filestring, NULL, file_start_addr, |
b9718991 | 1037 | pst_symtab_language); |
7a78ae4e | 1038 | record_debugformat (debugfmt); |
c5aa993b | 1039 | symnum = ((struct symloc *) pst->read_symtab_private)->first_symnum; |
c906108c | 1040 | max_symnum = |
c5aa993b | 1041 | symnum + ((struct symloc *) pst->read_symtab_private)->numsyms; |
c906108c SS |
1042 | first_object_file_end = 0; |
1043 | ||
b8b98ad1 | 1044 | raw_symbol = xcoff->symtbl + symnum * local_symesz; |
c906108c SS |
1045 | |
1046 | while (symnum < max_symnum) | |
1047 | { | |
c906108c SS |
1048 | QUIT; /* make this command interruptable. */ |
1049 | ||
1050 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
581e13c1 | 1051 | /* read one symbol into `cs' structure. After processing the |
c5aa993b | 1052 | whole symbol table, only string table will be kept in memory, |
581e13c1 | 1053 | symbol table and debug section of xcoff will be freed. Thus |
c5aa993b | 1054 | we can mark symbols with names in string table as |
581e13c1 | 1055 | `alloced'. */ |
c906108c SS |
1056 | { |
1057 | int ii; | |
1058 | ||
1059 | /* Swap and align the symbol into a reasonable C structure. */ | |
1060 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1061 | ||
1062 | cs->c_symnum = symnum; | |
1063 | cs->c_naux = symbol->n_numaux; | |
1064 | if (symbol->n_zeroes) | |
1065 | { | |
1066 | symname_alloced = 0; | |
1067 | /* We must use the original, unswapped, name here so the name field | |
1068 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1069 | we use the new field, it gets overwritten for each symbol. */ | |
c5aa993b | 1070 | cs->c_name = ((struct external_syment *) raw_symbol)->e.e_name; |
c906108c SS |
1071 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1072 | '\0'-terminated. */ | |
1073 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1074 | { | |
1075 | char *p; | |
a109c7c1 | 1076 | |
224c3ddb SM |
1077 | p = (char *) obstack_alloc (&objfile->objfile_obstack, |
1078 | E_SYMNMLEN + 1); | |
c906108c SS |
1079 | strncpy (p, cs->c_name, E_SYMNMLEN); |
1080 | p[E_SYMNMLEN] = '\0'; | |
1081 | cs->c_name = p; | |
1082 | symname_alloced = 1; | |
1083 | } | |
1084 | } | |
1085 | else if (symbol->n_sclass & 0x80) | |
1086 | { | |
1087 | cs->c_name = debugsec + symbol->n_offset; | |
1088 | symname_alloced = 0; | |
1089 | } | |
1090 | else | |
1091 | { | |
1092 | /* in string table */ | |
c5aa993b | 1093 | cs->c_name = strtbl + (int) symbol->n_offset; |
c906108c SS |
1094 | symname_alloced = 1; |
1095 | } | |
1096 | cs->c_value = symbol->n_value; | |
1097 | cs->c_sclass = symbol->n_sclass; | |
1098 | cs->c_secnum = symbol->n_scnum; | |
c5aa993b | 1099 | cs->c_type = (unsigned) symbol->n_type; |
c906108c | 1100 | |
7a78ae4e | 1101 | raw_symbol += local_symesz; |
c906108c SS |
1102 | ++symnum; |
1103 | ||
1104 | /* Save addr of first aux entry. */ | |
1105 | raw_auxptr = raw_symbol; | |
1106 | ||
1107 | /* Skip all the auxents associated with this symbol. */ | |
1108 | for (ii = symbol->n_numaux; ii; --ii) | |
1109 | { | |
1110 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1111 | ++symnum; | |
1112 | } | |
1113 | } | |
1114 | ||
581e13c1 | 1115 | /* if symbol name starts with ".$" or "$", ignore it. */ |
c906108c SS |
1116 | if (cs->c_name[0] == '$' |
1117 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1118 | continue; | |
1119 | ||
1120 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
1121 | { | |
46212e0b | 1122 | if (get_last_source_file ()) |
c906108c | 1123 | { |
43f3e411 DE |
1124 | pst->compunit_symtab = end_symtab (cur_src_end_addr, |
1125 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1126 | end_stabs (); |
1127 | } | |
1128 | ||
1129 | start_stabs (); | |
cafb3438 TT |
1130 | start_symtab (objfile, "_globals_", NULL, |
1131 | 0, pst_symtab_language); | |
7a78ae4e | 1132 | record_debugformat (debugfmt); |
c906108c | 1133 | cur_src_end_addr = first_object_file_end; |
581e13c1 | 1134 | /* Done with all files, everything from here on is globals. */ |
c906108c SS |
1135 | } |
1136 | ||
55bcecda UW |
1137 | if (cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT || |
1138 | cs->c_sclass == C_WEAKEXT) | |
c906108c SS |
1139 | { |
1140 | /* Dealing with a symbol with a csect entry. */ | |
1141 | ||
1142 | #define CSECT(PP) ((PP)->x_csect) | |
1143 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1144 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1145 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1146 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1147 | ||
55bcecda UW |
1148 | /* Convert the auxent to something we can access. |
1149 | XCOFF can have more than one auxiliary entries. | |
1150 | ||
1151 | Actual functions will have two auxiliary entries, one to have the | |
1152 | function size and other to have the smtype/smclass (LD/PR). | |
1153 | ||
1154 | c_type value of main symbol table will be set only in case of | |
1155 | C_EXT/C_HIDEEXT/C_WEAKEXT storage class symbols. | |
1156 | Bit 10 of type is set if symbol is a function, ie the value is set | |
85102364 | 1157 | to 32(0x20). So we need to read the first function auxiliary entry |
55bcecda UW |
1158 | which contains the size. */ |
1159 | if (cs->c_naux > 1 && ISFCN (cs->c_type)) | |
1160 | { | |
1161 | /* a function entry point. */ | |
1162 | ||
1163 | fcn_start_addr = cs->c_value; | |
1164 | ||
1165 | /* save the function header info, which will be used | |
1166 | when `.bf' is seen. */ | |
1167 | fcn_cs_saved = *cs; | |
1168 | ||
1169 | /* Convert the auxent to something we can access. */ | |
1170 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1171 | 0, cs->c_naux, &fcn_aux_saved); | |
1172 | continue; | |
1173 | } | |
1174 | /* Read the csect auxiliary header, which is always the last by | |
85102364 | 1175 | convention. */ |
55bcecda UW |
1176 | bfd_coff_swap_aux_in (abfd, |
1177 | raw_auxptr | |
1178 | + ((coff_data (abfd)->local_symesz) | |
1179 | * (cs->c_naux - 1)), | |
1180 | cs->c_type, cs->c_sclass, | |
1181 | cs->c_naux - 1, cs->c_naux, | |
1182 | &main_aux); | |
c906108c SS |
1183 | |
1184 | switch (CSECT_SMTYP (&main_aux)) | |
1185 | { | |
1186 | ||
1187 | case XTY_ER: | |
1188 | /* Ignore all external references. */ | |
1189 | continue; | |
1190 | ||
1191 | case XTY_SD: | |
1192 | /* A section description. */ | |
1193 | { | |
1194 | switch (CSECT_SCLAS (&main_aux)) | |
1195 | { | |
1196 | ||
1197 | case XMC_PR: | |
1198 | { | |
1199 | ||
1200 | /* A program csect is seen. We have to allocate one | |
c5aa993b JM |
1201 | symbol table for each program csect. Normally gdb |
1202 | prefers one symtab for each source file. In case | |
1203 | of AIX, one source file might include more than one | |
1204 | [PR] csect, and they don't have to be adjacent in | |
581e13c1 | 1205 | terms of the space they occupy in memory. Thus, one |
c5aa993b JM |
1206 | single source file might get fragmented in the |
1207 | memory and gdb's file start and end address | |
1208 | approach does not work! GCC (and I think xlc) seem | |
1209 | to put all the code in the unnamed program csect. */ | |
c906108c SS |
1210 | |
1211 | if (last_csect_name) | |
1212 | { | |
1213 | complete_symtab (filestring, file_start_addr); | |
1214 | cur_src_end_addr = file_end_addr; | |
43f3e411 | 1215 | end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1216 | end_stabs (); |
1217 | start_stabs (); | |
1218 | /* Give all csects for this source file the same | |
1219 | name. */ | |
4d663531 | 1220 | start_symtab (objfile, filestring, NULL, |
cafb3438 | 1221 | 0, pst_symtab_language); |
7a78ae4e | 1222 | record_debugformat (debugfmt); |
c906108c SS |
1223 | } |
1224 | ||
1225 | /* If this is the very first csect seen, | |
581e13c1 | 1226 | basically `__start'. */ |
c906108c SS |
1227 | if (just_started) |
1228 | { | |
1229 | first_object_file_end | |
1230 | = cs->c_value + CSECT_LEN (&main_aux); | |
1231 | just_started = 0; | |
1232 | } | |
1233 | ||
1234 | file_start_addr = | |
6a053cb1 | 1235 | cs->c_value + objfile->section_offsets[SECT_OFF_TEXT (objfile)]; |
c906108c SS |
1236 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); |
1237 | ||
40301fb7 JB |
1238 | if (cs->c_name && (cs->c_name[0] == '.' || cs->c_name[0] == '@')) |
1239 | last_csect_name = cs->c_name; | |
c906108c SS |
1240 | } |
1241 | continue; | |
1242 | ||
1243 | /* All other symbols are put into the minimal symbol | |
1244 | table only. */ | |
1245 | ||
1246 | case XMC_RW: | |
1247 | continue; | |
1248 | ||
1249 | case XMC_TC0: | |
1250 | continue; | |
1251 | ||
1252 | case XMC_TC: | |
1253 | continue; | |
1254 | ||
1255 | default: | |
1256 | /* Ignore the symbol. */ | |
1257 | continue; | |
1258 | } | |
1259 | } | |
1260 | break; | |
1261 | ||
1262 | case XTY_LD: | |
1263 | ||
1264 | switch (CSECT_SCLAS (&main_aux)) | |
1265 | { | |
55bcecda UW |
1266 | /* We never really come to this part as this case has been |
1267 | handled in ISFCN check above. | |
1268 | This and other cases of XTY_LD are kept just for | |
1269 | reference. */ | |
c906108c | 1270 | case XMC_PR: |
c906108c SS |
1271 | continue; |
1272 | ||
1273 | case XMC_GL: | |
581e13c1 | 1274 | /* shared library function trampoline code entry point. */ |
c906108c SS |
1275 | continue; |
1276 | ||
1277 | case XMC_DS: | |
1278 | /* The symbols often have the same names as debug symbols for | |
1279 | functions, and confuse lookup_symbol. */ | |
1280 | continue; | |
1281 | ||
1282 | default: | |
1283 | /* xlc puts each variable in a separate csect, so we get | |
1284 | an XTY_SD for each variable. But gcc puts several | |
1285 | variables in a csect, so that each variable only gets | |
581e13c1 | 1286 | an XTY_LD. This will typically be XMC_RW; I suspect |
c906108c SS |
1287 | XMC_RO and XMC_BS might be possible too. |
1288 | These variables are put in the minimal symbol table | |
1289 | only. */ | |
1290 | continue; | |
1291 | } | |
1292 | break; | |
1293 | ||
1294 | case XTY_CM: | |
1295 | /* Common symbols are put into the minimal symbol table only. */ | |
1296 | continue; | |
1297 | ||
1298 | default: | |
1299 | break; | |
1300 | } | |
1301 | } | |
1302 | ||
1303 | switch (cs->c_sclass) | |
1304 | { | |
c906108c SS |
1305 | case C_FILE: |
1306 | ||
1307 | /* c_value field contains symnum of next .file entry in table | |
581e13c1 | 1308 | or symnum of first global after last .file. */ |
c906108c SS |
1309 | |
1310 | next_file_symnum = cs->c_value; | |
1311 | ||
1312 | /* Complete symbol table for last object file containing | |
581e13c1 | 1313 | debugging information. */ |
c906108c SS |
1314 | |
1315 | /* Whether or not there was a csect in the previous file, we | |
1316 | have to call `end_stabs' and `start_stabs' to reset | |
1317 | type_vector, line_vector, etc. structures. */ | |
1318 | ||
1319 | complete_symtab (filestring, file_start_addr); | |
1320 | cur_src_end_addr = file_end_addr; | |
4d663531 | 1321 | end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1322 | end_stabs (); |
1323 | ||
3e43a32a MS |
1324 | /* XCOFF, according to the AIX 3.2 documentation, puts the |
1325 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
1326 | do things the standard COFF way and put it in the auxent. | |
1327 | We use the auxent if the symbol is ".file" and an auxent | |
1328 | exists, otherwise use the symbol itself. Simple | |
1329 | enough. */ | |
c906108c SS |
1330 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) |
1331 | { | |
1332 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1333 | 0, cs->c_naux, &main_aux); | |
1334 | filestring = coff_getfilename (&main_aux, objfile); | |
1335 | } | |
1336 | else | |
1337 | filestring = cs->c_name; | |
1338 | ||
1339 | start_stabs (); | |
cafb3438 | 1340 | start_symtab (objfile, filestring, NULL, 0, pst_symtab_language); |
7a78ae4e | 1341 | record_debugformat (debugfmt); |
c906108c SS |
1342 | last_csect_name = 0; |
1343 | ||
581e13c1 | 1344 | /* reset file start and end addresses. A compilation unit |
3e43a32a | 1345 | with no text (only data) should have zero file |
581e13c1 | 1346 | boundaries. */ |
c906108c SS |
1347 | file_start_addr = file_end_addr = 0; |
1348 | break; | |
1349 | ||
1350 | case C_FUN: | |
1351 | fcn_stab_saved = *cs; | |
1352 | break; | |
1353 | ||
1354 | case C_FCN: | |
7ecb6532 | 1355 | if (strcmp (cs->c_name, ".bf") == 0) |
c906108c | 1356 | { |
6a053cb1 | 1357 | CORE_ADDR off = objfile->section_offsets[SECT_OFF_TEXT (objfile)]; |
a109c7c1 | 1358 | |
c906108c SS |
1359 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1360 | 0, cs->c_naux, &main_aux); | |
1361 | ||
1362 | within_function = 1; | |
1363 | ||
fe978cb0 | 1364 | newobj = push_context (0, fcn_start_addr + off); |
c906108c | 1365 | |
fe978cb0 | 1366 | newobj->name = define_symbol |
c906108c SS |
1367 | (fcn_cs_saved.c_value + off, |
1368 | fcn_stab_saved.c_name, 0, 0, objfile); | |
fe978cb0 PA |
1369 | if (newobj->name != NULL) |
1370 | SYMBOL_SECTION (newobj->name) = SECT_OFF_TEXT (objfile); | |
c906108c | 1371 | } |
7ecb6532 | 1372 | else if (strcmp (cs->c_name, ".ef") == 0) |
c906108c | 1373 | { |
c906108c SS |
1374 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1375 | 0, cs->c_naux, &main_aux); | |
1376 | ||
1377 | /* The value of .ef is the address of epilogue code; | |
c5aa993b | 1378 | not useful for gdb. */ |
c906108c | 1379 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
c5aa993b | 1380 | contains number of lines to '}' */ |
c906108c | 1381 | |
edb0470b | 1382 | if (outermost_context_p ()) |
581e13c1 | 1383 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1384 | ef_complaint (cs->c_symnum); |
c906108c SS |
1385 | within_function = 0; |
1386 | break; | |
1387 | } | |
a60f3166 | 1388 | struct context_stack cstk = pop_context (); |
c906108c | 1389 | /* Stack must be empty now. */ |
a60f3166 | 1390 | if (!outermost_context_p ()) |
c906108c | 1391 | { |
23136709 | 1392 | ef_complaint (cs->c_symnum); |
c906108c SS |
1393 | within_function = 0; |
1394 | break; | |
1395 | } | |
1396 | ||
c233e9c6 | 1397 | finish_block (cstk.name, cstk.old_blocks, |
a60f3166 | 1398 | NULL, cstk.start_addr, |
c906108c SS |
1399 | (fcn_cs_saved.c_value |
1400 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
6a053cb1 | 1401 | + objfile->section_offsets[SECT_OFF_TEXT (objfile)])); |
c906108c SS |
1402 | within_function = 0; |
1403 | } | |
1404 | break; | |
1405 | ||
1406 | case C_BSTAT: | |
1407 | /* Begin static block. */ | |
1408 | { | |
b926417a | 1409 | struct internal_syment static_symbol; |
c906108c | 1410 | |
b926417a TT |
1411 | read_symbol (&static_symbol, cs->c_value); |
1412 | static_block_base = static_symbol.n_value; | |
c906108c | 1413 | static_block_section = |
b926417a | 1414 | secnum_to_section (static_symbol.n_scnum, objfile); |
c906108c SS |
1415 | } |
1416 | break; | |
1417 | ||
1418 | case C_ESTAT: | |
1419 | /* End of static block. */ | |
1420 | static_block_base = 0; | |
1421 | static_block_section = -1; | |
1422 | break; | |
1423 | ||
1424 | case C_ARG: | |
1425 | case C_REGPARM: | |
1426 | case C_REG: | |
1427 | case C_TPDEF: | |
1428 | case C_STRTAG: | |
1429 | case C_UNTAG: | |
1430 | case C_ENTAG: | |
1431 | { | |
b98664d3 | 1432 | complaint (_("Unrecognized storage class %d."), |
23136709 | 1433 | cs->c_sclass); |
c906108c SS |
1434 | } |
1435 | break; | |
1436 | ||
1437 | case C_LABEL: | |
1438 | case C_NULL: | |
1439 | /* Ignore these. */ | |
1440 | break; | |
1441 | ||
1442 | case C_HIDEXT: | |
1443 | case C_STAT: | |
1444 | break; | |
1445 | ||
1446 | case C_BINCL: | |
1447 | /* beginning of include file */ | |
1448 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
581e13c1 MS |
1449 | order. Thus, when wee see them, we might not know enough info |
1450 | to process them. Thus, we'll be saving them into a table | |
1451 | (inclTable) and postpone their processing. */ | |
c906108c SS |
1452 | |
1453 | record_include_begin (cs); | |
1454 | break; | |
1455 | ||
1456 | case C_EINCL: | |
1457 | /* End of include file. */ | |
1458 | /* See the comment after case C_BINCL. */ | |
1459 | record_include_end (cs); | |
1460 | break; | |
1461 | ||
1462 | case C_BLOCK: | |
7ecb6532 | 1463 | if (strcmp (cs->c_name, ".bb") == 0) |
c906108c SS |
1464 | { |
1465 | depth++; | |
fe978cb0 | 1466 | newobj = push_context (depth, |
c906108c | 1467 | (cs->c_value |
6a053cb1 | 1468 | + objfile->section_offsets[SECT_OFF_TEXT (objfile)])); |
c906108c | 1469 | } |
7ecb6532 | 1470 | else if (strcmp (cs->c_name, ".eb") == 0) |
c906108c | 1471 | { |
edb0470b | 1472 | if (outermost_context_p ()) |
581e13c1 | 1473 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1474 | eb_complaint (cs->c_symnum); |
c906108c SS |
1475 | break; |
1476 | } | |
a60f3166 TT |
1477 | struct context_stack cstk = pop_context (); |
1478 | if (depth-- != cstk.depth) | |
c906108c | 1479 | { |
23136709 | 1480 | eb_complaint (cs->c_symnum); |
c906108c SS |
1481 | break; |
1482 | } | |
e148f09d | 1483 | if (*get_local_symbols () && !outermost_context_p ()) |
c906108c SS |
1484 | { |
1485 | /* Make a block for the local symbols within. */ | |
c233e9c6 | 1486 | finish_block (cstk.name, |
a60f3166 TT |
1487 | cstk.old_blocks, NULL, |
1488 | cstk.start_addr, | |
c906108c | 1489 | (cs->c_value |
6a053cb1 | 1490 | + objfile->section_offsets[SECT_OFF_TEXT (objfile)])); |
c906108c | 1491 | } |
e148f09d | 1492 | *get_local_symbols () = cstk.locals; |
c906108c SS |
1493 | } |
1494 | break; | |
1495 | ||
1496 | default: | |
1497 | process_xcoff_symbol (cs, objfile); | |
1498 | break; | |
1499 | } | |
1500 | } | |
1501 | ||
46212e0b | 1502 | if (get_last_source_file ()) |
c906108c | 1503 | { |
43f3e411 | 1504 | struct compunit_symtab *cust; |
c906108c SS |
1505 | |
1506 | complete_symtab (filestring, file_start_addr); | |
1507 | cur_src_end_addr = file_end_addr; | |
43f3e411 | 1508 | cust = end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c | 1509 | /* When reading symbols for the last C_FILE of the objfile, try |
43f3e411 | 1510 | to make sure that we set pst->compunit_symtab to the symtab for the |
c906108c SS |
1511 | file, not to the _globals_ symtab. I'm not sure whether this |
1512 | actually works right or when/if it comes up. */ | |
43f3e411 DE |
1513 | if (pst->compunit_symtab == NULL) |
1514 | pst->compunit_symtab = cust; | |
c906108c SS |
1515 | end_stabs (); |
1516 | } | |
1517 | } | |
1518 | ||
1519 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
468c0cbb | 1520 | (SYMBOL2) = new (&objfile->objfile_obstack) symbol (); \ |
c906108c | 1521 | *(SYMBOL2) = *(SYMBOL1); |
c5aa993b JM |
1522 | |
1523 | ||
c906108c | 1524 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ |
021887d8 TT |
1525 | ((ALLOCED) ? (NAME) : obstack_strdup (&objfile->objfile_obstack, \ |
1526 | (NAME))) | |
c906108c SS |
1527 | |
1528 | ||
581e13c1 | 1529 | /* process one xcoff symbol. */ |
c906108c SS |
1530 | |
1531 | static struct symbol * | |
aa1ee363 | 1532 | process_xcoff_symbol (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
1533 | { |
1534 | struct symbol onesymbol; | |
52f0bd74 | 1535 | struct symbol *sym = &onesymbol; |
c906108c SS |
1536 | struct symbol *sym2 = NULL; |
1537 | char *name, *pp; | |
1538 | ||
1539 | int sec; | |
1540 | CORE_ADDR off; | |
1541 | ||
1542 | if (cs->c_secnum < 0) | |
1543 | { | |
1544 | /* The value is a register number, offset within a frame, etc., | |
c5aa993b | 1545 | and does not get relocated. */ |
c906108c SS |
1546 | off = 0; |
1547 | sec = -1; | |
1548 | } | |
1549 | else | |
1550 | { | |
1551 | sec = secnum_to_section (cs->c_secnum, objfile); | |
6a053cb1 | 1552 | off = objfile->section_offsets[sec]; |
c906108c SS |
1553 | } |
1554 | ||
1555 | name = cs->c_name; | |
1556 | if (name[0] == '.') | |
1557 | ++name; | |
1558 | ||
38bf1463 | 1559 | initialize_objfile_symbol (sym); |
c906108c SS |
1560 | |
1561 | /* default assumptions */ | |
38583298 | 1562 | SET_SYMBOL_VALUE_ADDRESS (sym, cs->c_value + off); |
176620f1 | 1563 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1564 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); |
1565 | ||
1566 | if (ISFCN (cs->c_type)) | |
1567 | { | |
1568 | /* At this point, we don't know the type of the function. This | |
c5aa993b JM |
1569 | will be patched with the type from its stab entry later on in |
1570 | patch_block_stabs (), unless the file was compiled without -g. */ | |
c906108c | 1571 | |
43678b0a | 1572 | sym->set_linkage_name (SYMNAME_ALLOC (name, symname_alloced)); |
46bf5051 | 1573 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_text_symbol; |
c906108c | 1574 | |
f1e6e072 | 1575 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1576 | SYMBOL_DUP (sym, sym2); |
1577 | ||
55bcecda | 1578 | if (cs->c_sclass == C_EXT || C_WEAKEXT) |
e148f09d | 1579 | add_symbol_to_list (sym2, get_global_symbols ()); |
c906108c | 1580 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) |
e148f09d | 1581 | add_symbol_to_list (sym2, get_file_symbols ()); |
c906108c SS |
1582 | } |
1583 | else | |
1584 | { | |
581e13c1 | 1585 | /* In case we can't figure out the type, provide default. */ |
46bf5051 | 1586 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
1587 | |
1588 | switch (cs->c_sclass) | |
1589 | { | |
1590 | #if 0 | |
c5aa993b JM |
1591 | /* The values of functions and global symbols are now resolved |
1592 | via the global_sym_chain in stabsread.c. */ | |
c906108c SS |
1593 | case C_FUN: |
1594 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1595 | add_stab_to_list (name, &global_stabs); | |
1596 | else | |
1597 | add_stab_to_list (name, &file_stabs); | |
1598 | break; | |
1599 | ||
1600 | case C_GSYM: | |
1601 | add_stab_to_list (name, &global_stabs); | |
1602 | break; | |
1603 | #endif | |
1604 | ||
1605 | case C_BCOMM: | |
1606 | common_block_start (cs->c_name, objfile); | |
1607 | break; | |
1608 | ||
1609 | case C_ECOMM: | |
1610 | common_block_end (objfile); | |
1611 | break; | |
1612 | ||
1613 | default: | |
b98664d3 | 1614 | complaint (_("Unexpected storage class: %d"), |
23136709 | 1615 | cs->c_sclass); |
c906108c SS |
1616 | /* FALLTHROUGH */ |
1617 | ||
1618 | case C_DECL: | |
1619 | case C_PSYM: | |
1620 | case C_RPSYM: | |
1621 | case C_ECOML: | |
1622 | case C_LSYM: | |
1623 | case C_RSYM: | |
1624 | case C_GSYM: | |
1625 | ||
1626 | { | |
1627 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1628 | if (sym != NULL) | |
1629 | { | |
1630 | SYMBOL_SECTION (sym) = sec; | |
1631 | } | |
1632 | return sym; | |
1633 | } | |
1634 | ||
1635 | case C_STSYM: | |
1636 | ||
1637 | /* For xlc (not GCC), the 'V' symbol descriptor is used for | |
1638 | all statics and we need to distinguish file-scope versus | |
1639 | function-scope using within_function. We do this by | |
1640 | changing the string we pass to define_symbol to use 'S' | |
1641 | where we need to, which is not necessarily super-clean, | |
1642 | but seems workable enough. */ | |
1643 | ||
9b13a2db PM |
1644 | if (*name == ':') |
1645 | return NULL; | |
1646 | ||
ed4b0e6a | 1647 | pp = strchr (name, ':'); |
9b13a2db | 1648 | if (pp == NULL) |
c906108c SS |
1649 | return NULL; |
1650 | ||
1651 | ++pp; | |
1652 | if (*pp == 'V' && !within_function) | |
1653 | *pp = 'S'; | |
1654 | sym = define_symbol ((cs->c_value | |
6a053cb1 | 1655 | + objfile->section_offsets[static_block_section]), |
c906108c SS |
1656 | cs->c_name, 0, 0, objfile); |
1657 | if (sym != NULL) | |
1658 | { | |
38583298 TT |
1659 | SET_SYMBOL_VALUE_ADDRESS (sym, |
1660 | SYMBOL_VALUE_ADDRESS (sym) | |
1661 | + static_block_base); | |
c906108c SS |
1662 | SYMBOL_SECTION (sym) = static_block_section; |
1663 | } | |
1664 | return sym; | |
1665 | ||
1666 | } | |
1667 | } | |
1668 | return sym2; | |
1669 | } | |
1670 | ||
1671 | /* Extract the file name from the aux entry of a C_FILE symbol. | |
1672 | Result is in static storage and is only good for temporary use. */ | |
1673 | ||
1674 | static char * | |
fba45db2 | 1675 | coff_getfilename (union internal_auxent *aux_entry, struct objfile *objfile) |
c906108c SS |
1676 | { |
1677 | static char buffer[BUFSIZ]; | |
1678 | ||
1679 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
b8b98ad1 TT |
1680 | strcpy (buffer, (XCOFF_DATA (objfile)->strtbl |
1681 | + aux_entry->x_file.x_n.x_offset)); | |
c906108c SS |
1682 | else |
1683 | { | |
1684 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1685 | buffer[FILNMLEN] = '\0'; | |
1686 | } | |
1687 | return (buffer); | |
1688 | } | |
1689 | ||
1690 | /* Set *SYMBOL to symbol number symno in symtbl. */ | |
1691 | static void | |
fba45db2 | 1692 | read_symbol (struct internal_syment *symbol, int symno) |
c906108c | 1693 | { |
02dc647e | 1694 | struct xcoff_symfile_info *xcoff = XCOFF_DATA (this_symtab_objfile); |
b8b98ad1 TT |
1695 | int nsyms = xcoff->symtbl_num_syms; |
1696 | char *stbl = xcoff->symtbl; | |
a109c7c1 | 1697 | |
c906108c SS |
1698 | if (symno < 0 || symno >= nsyms) |
1699 | { | |
b98664d3 | 1700 | complaint (_("Invalid symbol offset")); |
c906108c SS |
1701 | symbol->n_value = 0; |
1702 | symbol->n_scnum = -1; | |
1703 | return; | |
1704 | } | |
5c80ed9d | 1705 | bfd_coff_swap_sym_in (this_symtab_objfile->obfd, |
c5aa993b | 1706 | stbl + (symno * local_symesz), |
c906108c SS |
1707 | symbol); |
1708 | } | |
c5aa993b | 1709 | |
c906108c SS |
1710 | /* Get value corresponding to symbol number symno in symtbl. */ |
1711 | ||
470d5666 | 1712 | static CORE_ADDR |
fba45db2 | 1713 | read_symbol_nvalue (int symno) |
c906108c SS |
1714 | { |
1715 | struct internal_syment symbol[1]; | |
1716 | ||
1717 | read_symbol (symbol, symno); | |
c5aa993b | 1718 | return symbol->n_value; |
c906108c SS |
1719 | } |
1720 | ||
1721 | ||
1722 | /* Find the address of the function corresponding to symno, where | |
1723 | symno is the symbol pointed to by the linetable. */ | |
1724 | ||
1725 | static int | |
fba45db2 | 1726 | read_symbol_lineno (int symno) |
c906108c | 1727 | { |
5c80ed9d | 1728 | struct objfile *objfile = this_symtab_objfile; |
7af35dad | 1729 | int xcoff64 = bfd_xcoff_is_xcoff64 (objfile->obfd); |
7a78ae4e | 1730 | |
02dc647e | 1731 | struct xcoff_symfile_info *info = XCOFF_DATA (objfile); |
7a78ae4e ND |
1732 | int nsyms = info->symtbl_num_syms; |
1733 | char *stbl = info->symtbl; | |
1734 | char *strtbl = info->strtbl; | |
1735 | ||
c906108c SS |
1736 | struct internal_syment symbol[1]; |
1737 | union internal_auxent main_aux[1]; | |
1738 | ||
1739 | if (symno < 0) | |
1740 | { | |
23136709 | 1741 | bf_notfound_complaint (); |
c906108c SS |
1742 | return 0; |
1743 | } | |
1744 | ||
1745 | /* Note that just searching for a short distance (e.g. 50 symbols) | |
1746 | is not enough, at least in the following case. | |
1747 | ||
1748 | .extern foo | |
1749 | [many .stabx entries] | |
1750 | [a few functions, referring to foo] | |
1751 | .globl foo | |
1752 | .bf | |
1753 | ||
1754 | What happens here is that the assembler moves the .stabx entries | |
1755 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1756 | all the stabx entries. See PR gdb/2222. */ | |
1757 | ||
1758 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1759 | If I understand things correctly it would need to be done only for | |
1760 | the duration of a single psymtab to symtab conversion. */ | |
1761 | while (symno < nsyms) | |
1762 | { | |
1763 | bfd_coff_swap_sym_in (symfile_bfd, | |
1764 | stbl + (symno * local_symesz), symbol); | |
7a78ae4e ND |
1765 | if (symbol->n_sclass == C_FCN) |
1766 | { | |
1767 | char *name = xcoff64 ? strtbl + symbol->n_offset : symbol->n_name; | |
a109c7c1 | 1768 | |
7ecb6532 | 1769 | if (strcmp (name, ".bf") == 0) |
7a78ae4e ND |
1770 | goto gotit; |
1771 | } | |
c906108c SS |
1772 | symno += symbol->n_numaux + 1; |
1773 | } | |
1774 | ||
23136709 | 1775 | bf_notfound_complaint (); |
c906108c SS |
1776 | return 0; |
1777 | ||
1778 | gotit: | |
581e13c1 | 1779 | /* Take aux entry and return its lineno. */ |
c906108c | 1780 | symno++; |
7a78ae4e | 1781 | bfd_coff_swap_aux_in (objfile->obfd, stbl + symno * local_symesz, |
c906108c SS |
1782 | symbol->n_type, symbol->n_sclass, |
1783 | 0, symbol->n_numaux, main_aux); | |
1784 | ||
1785 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1786 | } | |
1787 | ||
581e13c1 | 1788 | /* Support for line number handling. */ |
c906108c SS |
1789 | |
1790 | /* This function is called for every section; it finds the outer limits | |
1791 | * of the line table (minimum and maximum file offset) so that the | |
1792 | * mainline code can read the whole thing for efficiency. | |
1793 | */ | |
1794 | static void | |
7be0c536 | 1795 | find_linenos (struct bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c | 1796 | { |
02dc647e | 1797 | struct xcoff_symfile_info *info; |
c906108c SS |
1798 | int size, count; |
1799 | file_ptr offset, maxoff; | |
1800 | ||
1801 | count = asect->lineno_count; | |
1802 | ||
7ecb6532 | 1803 | if (strcmp (asect->name, ".text") != 0 || count == 0) |
c906108c SS |
1804 | return; |
1805 | ||
1806 | size = count * coff_data (abfd)->local_linesz; | |
02dc647e | 1807 | info = (struct xcoff_symfile_info *) vpinfo; |
c906108c SS |
1808 | offset = asect->line_filepos; |
1809 | maxoff = offset + size; | |
1810 | ||
1811 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1812 | info->min_lineno_offset = offset; | |
1813 | ||
1814 | if (maxoff > info->max_lineno_offset) | |
1815 | info->max_lineno_offset = maxoff; | |
1816 | } | |
1817 | \f | |
c906108c | 1818 | static void |
5c80ed9d | 1819 | xcoff_psymtab_to_symtab_1 (struct objfile *objfile, struct partial_symtab *pst) |
c906108c | 1820 | { |
c906108c | 1821 | int i; |
c5aa993b | 1822 | |
c906108c SS |
1823 | if (!pst) |
1824 | return; | |
1825 | ||
1826 | if (pst->readin) | |
1827 | { | |
1828 | fprintf_unfiltered | |
1829 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1830 | pst->filename); | |
1831 | return; | |
1832 | } | |
1833 | ||
581e13c1 | 1834 | /* Read in all partial symtabs on which this one is dependent. */ |
c906108c SS |
1835 | for (i = 0; i < pst->number_of_dependencies; i++) |
1836 | if (!pst->dependencies[i]->readin) | |
1837 | { | |
1838 | /* Inform about additional files that need to be read in. */ | |
1839 | if (info_verbose) | |
1840 | { | |
1841 | fputs_filtered (" ", gdb_stdout); | |
1842 | wrap_here (""); | |
1843 | fputs_filtered ("and ", gdb_stdout); | |
1844 | wrap_here (""); | |
1845 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
c5aa993b | 1846 | wrap_here (""); /* Flush output */ |
c906108c SS |
1847 | gdb_flush (gdb_stdout); |
1848 | } | |
5c80ed9d | 1849 | xcoff_psymtab_to_symtab_1 (objfile, pst->dependencies[i]); |
c906108c SS |
1850 | } |
1851 | ||
c5aa993b | 1852 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0) |
c906108c SS |
1853 | { |
1854 | /* Init stuff necessary for reading in symbols. */ | |
1855 | stabsread_init (); | |
c906108c | 1856 | |
33c7c59d | 1857 | scoped_free_pendings free_pending; |
5c80ed9d | 1858 | read_xcoff_symtab (objfile, pst); |
c906108c SS |
1859 | } |
1860 | ||
1861 | pst->readin = 1; | |
1862 | } | |
1863 | ||
c906108c | 1864 | /* Read in all of the symbols for a given psymtab for real. |
257e7a09 | 1865 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
1866 | |
1867 | static void | |
257e7a09 | 1868 | xcoff_read_symtab (struct partial_symtab *self, struct objfile *objfile) |
c906108c | 1869 | { |
257e7a09 | 1870 | if (self->readin) |
c906108c SS |
1871 | { |
1872 | fprintf_unfiltered | |
1873 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
257e7a09 | 1874 | self->filename); |
c906108c SS |
1875 | return; |
1876 | } | |
1877 | ||
257e7a09 YQ |
1878 | if (((struct symloc *) self->read_symtab_private)->numsyms != 0 |
1879 | || self->number_of_dependencies) | |
c906108c SS |
1880 | { |
1881 | /* Print the message now, before reading the string table, | |
c5aa993b | 1882 | to avoid disconcerting pauses. */ |
c906108c SS |
1883 | if (info_verbose) |
1884 | { | |
257e7a09 | 1885 | printf_filtered ("Reading in symbols for %s...", self->filename); |
c906108c SS |
1886 | gdb_flush (gdb_stdout); |
1887 | } | |
1888 | ||
c906108c SS |
1889 | next_symbol_text_func = xcoff_next_symbol_text; |
1890 | ||
257e7a09 | 1891 | xcoff_psymtab_to_symtab_1 (objfile, self); |
c906108c SS |
1892 | |
1893 | /* Match with global symbols. This only needs to be done once, | |
1894 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 1895 | scan_file_globals (objfile); |
c906108c SS |
1896 | |
1897 | /* Finish up the debug error message. */ | |
1898 | if (info_verbose) | |
1899 | printf_filtered ("done.\n"); | |
1900 | } | |
1901 | } | |
1902 | \f | |
1903 | static void | |
fba45db2 | 1904 | xcoff_new_init (struct objfile *objfile) |
c906108c SS |
1905 | { |
1906 | stabsread_new_init (); | |
c906108c SS |
1907 | } |
1908 | ||
1909 | /* Do initialization in preparation for reading symbols from OBJFILE. | |
c5aa993b | 1910 | |
c906108c SS |
1911 | We will only be called if this is an XCOFF or XCOFF-like file. |
1912 | BFD handles figuring out the format of the file, and code in symfile.c | |
1913 | uses BFD's determination to vector to us. */ | |
1914 | ||
1915 | static void | |
fba45db2 | 1916 | xcoff_symfile_init (struct objfile *objfile) |
c906108c | 1917 | { |
581e13c1 | 1918 | /* Allocate struct to keep track of the symfile. */ |
02dc647e | 1919 | xcoff_objfile_data_key.emplace (objfile); |
c906108c SS |
1920 | |
1921 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1922 | find this causes a significant slowdown in gdb then we could | |
1923 | set it in the debug symbol readers only when necessary. */ | |
1924 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
1925 | } |
1926 | ||
1927 | /* Perform any local cleanups required when we are done with a particular | |
1928 | objfile. I.E, we are in the process of discarding all symbol information | |
1929 | for an objfile, freeing up all memory held for it, and unlinking the | |
581e13c1 | 1930 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
1931 | |
1932 | static void | |
fba45db2 | 1933 | xcoff_symfile_finish (struct objfile *objfile) |
c906108c | 1934 | { |
c906108c SS |
1935 | /* Start with a fresh include table for the next objfile. */ |
1936 | if (inclTable) | |
1937 | { | |
b8c9b27d | 1938 | xfree (inclTable); |
c906108c SS |
1939 | inclTable = NULL; |
1940 | } | |
1941 | inclIndx = inclLength = inclDepth = 0; | |
1942 | } | |
1943 | ||
1944 | ||
1945 | static void | |
fba45db2 | 1946 | init_stringtab (bfd *abfd, file_ptr offset, struct objfile *objfile) |
c906108c SS |
1947 | { |
1948 | long length; | |
1949 | int val; | |
1950 | unsigned char lengthbuf[4]; | |
1951 | char *strtbl; | |
02dc647e | 1952 | struct xcoff_symfile_info *xcoff = XCOFF_DATA (objfile); |
c906108c | 1953 | |
b8b98ad1 | 1954 | xcoff->strtbl = NULL; |
c906108c SS |
1955 | |
1956 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) | |
8a3fe4f8 | 1957 | error (_("cannot seek to string table in %s: %s"), |
c906108c SS |
1958 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1959 | ||
3a42e9d0 | 1960 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c SS |
1961 | length = bfd_h_get_32 (abfd, lengthbuf); |
1962 | ||
1963 | /* If no string table is needed, then the file may end immediately | |
1964 | after the symbols. Just return with `strtbl' set to NULL. */ | |
1965 | ||
1966 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1967 | return; | |
1968 | ||
581e13c1 MS |
1969 | /* Allocate string table from objfile_obstack. We will need this table |
1970 | as long as we have its symbol table around. */ | |
c906108c | 1971 | |
4a146b47 | 1972 | strtbl = (char *) obstack_alloc (&objfile->objfile_obstack, length); |
b8b98ad1 | 1973 | xcoff->strtbl = strtbl; |
c906108c SS |
1974 | |
1975 | /* Copy length buffer, the first byte is usually zero and is | |
1976 | used for stabs with a name length of zero. */ | |
1977 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
1978 | if (length == sizeof lengthbuf) | |
1979 | return; | |
1980 | ||
3a42e9d0 | 1981 | val = bfd_bread (strtbl + sizeof lengthbuf, length - sizeof lengthbuf, abfd); |
c906108c SS |
1982 | |
1983 | if (val != length - sizeof lengthbuf) | |
8a3fe4f8 | 1984 | error (_("cannot read string table from %s: %s"), |
c906108c SS |
1985 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1986 | if (strtbl[length - 1] != '\0') | |
3e43a32a MS |
1987 | error (_("bad symbol file: string table " |
1988 | "does not end with null character")); | |
c906108c SS |
1989 | |
1990 | return; | |
1991 | } | |
1992 | \f | |
1993 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
1994 | have seen one, it is the offset in the line numbers of the line numbers | |
1995 | for the psymtab. */ | |
1996 | static unsigned int first_fun_line_offset; | |
1997 | ||
c906108c SS |
1998 | /* Allocate and partially fill a partial symtab. It will be |
1999 | completely filled at the end of the symbol list. | |
2000 | ||
2001 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
2002 | is the address relative to which its symbols are (incremental) or 0 | |
581e13c1 | 2003 | (normal). */ |
c906108c SS |
2004 | |
2005 | static struct partial_symtab * | |
0d5cff50 | 2006 | xcoff_start_psymtab (struct objfile *objfile, |
939652a5 | 2007 | const char *filename, int first_symnum) |
c906108c SS |
2008 | { |
2009 | struct partial_symtab *result = | |
18a94d75 | 2010 | start_psymtab_common (objfile, |
a109c7c1 MS |
2011 | filename, |
2012 | /* We fill in textlow later. */ | |
939652a5 | 2013 | 0); |
c906108c | 2014 | |
8d749320 SM |
2015 | result->read_symtab_private = |
2016 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 2017 | ((struct symloc *) result->read_symtab_private)->first_symnum = first_symnum; |
257e7a09 | 2018 | result->read_symtab = xcoff_read_symtab; |
c906108c | 2019 | |
581e13c1 | 2020 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
2021 | psymtab_language = deduce_language_from_filename (filename); |
2022 | ||
2023 | return result; | |
2024 | } | |
2025 | ||
581e13c1 | 2026 | /* Close off the current usage of PST. |
c906108c SS |
2027 | Returns PST, or NULL if the partial symtab was empty and thrown away. |
2028 | ||
2029 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). | |
2030 | ||
2031 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES | |
2032 | are the information for includes and dependencies. */ | |
2033 | ||
2034 | static struct partial_symtab * | |
5c80ed9d TT |
2035 | xcoff_end_psymtab (struct objfile *objfile, struct partial_symtab *pst, |
2036 | const char **include_list, int num_includes, | |
2037 | int capping_symbol_number, | |
fba45db2 KB |
2038 | struct partial_symtab **dependency_list, |
2039 | int number_dependencies, int textlow_not_set) | |
c906108c SS |
2040 | { |
2041 | int i; | |
c906108c SS |
2042 | |
2043 | if (capping_symbol_number != -1) | |
c5aa993b | 2044 | ((struct symloc *) pst->read_symtab_private)->numsyms = |
c906108c | 2045 | capping_symbol_number |
c5aa993b JM |
2046 | - ((struct symloc *) pst->read_symtab_private)->first_symnum; |
2047 | ((struct symloc *) pst->read_symtab_private)->lineno_off = | |
c906108c SS |
2048 | first_fun_line_offset; |
2049 | first_fun_line_offset = 0; | |
8763cede DE |
2050 | |
2051 | end_psymtab_common (objfile, pst); | |
c906108c SS |
2052 | |
2053 | pst->number_of_dependencies = number_dependencies; | |
2054 | if (number_dependencies) | |
2055 | { | |
a9342b62 TT |
2056 | pst->dependencies |
2057 | = objfile->partial_symtabs->allocate_dependencies (number_dependencies); | |
c906108c | 2058 | memcpy (pst->dependencies, dependency_list, |
c5aa993b | 2059 | number_dependencies * sizeof (struct partial_symtab *)); |
c906108c SS |
2060 | } |
2061 | else | |
2062 | pst->dependencies = 0; | |
2063 | ||
2064 | for (i = 0; i < num_includes; i++) | |
2065 | { | |
2066 | struct partial_symtab *subpst = | |
a109c7c1 | 2067 | allocate_psymtab (include_list[i], objfile); |
c906108c | 2068 | |
e39db4db | 2069 | subpst->read_symtab_private = XOBNEW (&objfile->objfile_obstack, symloc); |
c5aa993b JM |
2070 | ((struct symloc *) subpst->read_symtab_private)->first_symnum = 0; |
2071 | ((struct symloc *) subpst->read_symtab_private)->numsyms = 0; | |
c906108c SS |
2072 | |
2073 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2074 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 | 2075 | subpst->dependencies = |
a9342b62 | 2076 | objfile->partial_symtabs->allocate_dependencies (1); |
c906108c SS |
2077 | subpst->dependencies[0] = pst; |
2078 | subpst->number_of_dependencies = 1; | |
2079 | ||
c906108c SS |
2080 | subpst->read_symtab = pst->read_symtab; |
2081 | } | |
2082 | ||
c906108c SS |
2083 | if (num_includes == 0 |
2084 | && number_dependencies == 0 | |
2085 | && pst->n_global_syms == 0 | |
2086 | && pst->n_static_syms == 0) | |
2087 | { | |
2088 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2089 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2090 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b | 2091 | any symbols in them. There can be a lot of them. */ |
c906108c | 2092 | |
5c80ed9d | 2093 | discard_psymtab (objfile, pst); |
c906108c SS |
2094 | |
2095 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2096 | pst = NULL; |
c906108c SS |
2097 | } |
2098 | return pst; | |
2099 | } | |
2100 | ||
c906108c SS |
2101 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in |
2102 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2103 | the symbol and its auxents. */ | |
2104 | ||
2105 | static void | |
fba45db2 | 2106 | swap_sym (struct internal_syment *symbol, union internal_auxent *aux, |
0d5cff50 | 2107 | const char **name, char **raw, unsigned int *symnump, |
fba45db2 | 2108 | struct objfile *objfile) |
c906108c SS |
2109 | { |
2110 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2111 | if (symbol->n_zeroes) | |
2112 | { | |
2113 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
c5aa993b | 2114 | '\0'-terminated. */ |
c906108c SS |
2115 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') |
2116 | { | |
2117 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2118 | into the minimal symbols. */ | |
2119 | char *p; | |
a109c7c1 | 2120 | |
224c3ddb SM |
2121 | p = (char *) obstack_alloc (&objfile->objfile_obstack, |
2122 | E_SYMNMLEN + 1); | |
c906108c SS |
2123 | strncpy (p, symbol->n_name, E_SYMNMLEN); |
2124 | p[E_SYMNMLEN] = '\0'; | |
2125 | *name = p; | |
2126 | } | |
2127 | else | |
2128 | /* Point to the unswapped name as that persists as long as the | |
2129 | objfile does. */ | |
c5aa993b | 2130 | *name = ((struct external_syment *) *raw)->e.e_name; |
c906108c SS |
2131 | } |
2132 | else if (symbol->n_sclass & 0x80) | |
2133 | { | |
b8b98ad1 | 2134 | *name = XCOFF_DATA (objfile)->debugsec + symbol->n_offset; |
c906108c SS |
2135 | } |
2136 | else | |
2137 | { | |
b8b98ad1 | 2138 | *name = XCOFF_DATA (objfile)->strtbl + symbol->n_offset; |
c906108c SS |
2139 | } |
2140 | ++*symnump; | |
2141 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2142 | if (symbol->n_numaux > 0) | |
2143 | { | |
2144 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2145 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2146 | ||
2147 | *symnump += symbol->n_numaux; | |
2148 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2149 | } | |
2150 | } | |
2151 | ||
23136709 KB |
2152 | static void |
2153 | function_outside_compilation_unit_complaint (const char *arg1) | |
2154 | { | |
b98664d3 | 2155 | complaint (_("function `%s' appears to be defined " |
3e43a32a | 2156 | "outside of all compilation units"), |
23136709 KB |
2157 | arg1); |
2158 | } | |
2159 | ||
c906108c | 2160 | static void |
8dddcb8f TT |
2161 | scan_xcoff_symtab (minimal_symbol_reader &reader, |
2162 | struct objfile *objfile) | |
c906108c | 2163 | { |
40c58d95 | 2164 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
581e13c1 | 2165 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
0d5cff50 | 2166 | const char *filestring = NULL; |
c906108c | 2167 | |
0d5cff50 | 2168 | const char *namestring; |
c906108c SS |
2169 | bfd *abfd; |
2170 | asection *bfd_sect; | |
2171 | unsigned int nsyms; | |
2172 | ||
2173 | /* Current partial symtab */ | |
2174 | struct partial_symtab *pst; | |
2175 | ||
581e13c1 | 2176 | /* List of current psymtab's include files. */ |
0d5cff50 | 2177 | const char **psymtab_include_list; |
c906108c SS |
2178 | int includes_allocated; |
2179 | int includes_used; | |
2180 | ||
581e13c1 | 2181 | /* Index within current psymtab dependency list. */ |
c906108c SS |
2182 | struct partial_symtab **dependency_list; |
2183 | int dependencies_used, dependencies_allocated; | |
2184 | ||
2185 | char *sraw_symbol; | |
2186 | struct internal_syment symbol; | |
96baa820 | 2187 | union internal_auxent main_aux[5]; |
c906108c SS |
2188 | unsigned int ssymnum; |
2189 | ||
0d5cff50 | 2190 | const char *last_csect_name = NULL; /* Last seen csect's name and value. */ |
c906108c SS |
2191 | CORE_ADDR last_csect_val = 0; |
2192 | int last_csect_sec = 0; | |
581e13c1 | 2193 | int misc_func_recorded = 0; /* true if any misc. function. */ |
c906108c SS |
2194 | int textlow_not_set = 1; |
2195 | ||
2196 | pst = (struct partial_symtab *) 0; | |
2197 | ||
2198 | includes_allocated = 30; | |
2199 | includes_used = 0; | |
0d5cff50 DE |
2200 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2201 | sizeof (const char *)); | |
c906108c SS |
2202 | |
2203 | dependencies_allocated = 30; | |
2204 | dependencies_used = 0; | |
2205 | dependency_list = | |
2206 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2207 | sizeof (struct partial_symtab *)); | |
2208 | ||
46212e0b | 2209 | set_last_source_file (NULL); |
c906108c SS |
2210 | |
2211 | abfd = objfile->obfd; | |
13c763f4 | 2212 | next_symbol_text_func = xcoff_next_symbol_text; |
c906108c | 2213 | |
b8b98ad1 TT |
2214 | sraw_symbol = XCOFF_DATA (objfile)->symtbl; |
2215 | nsyms = XCOFF_DATA (objfile)->symtbl_num_syms; | |
c906108c SS |
2216 | ssymnum = 0; |
2217 | while (ssymnum < nsyms) | |
2218 | { | |
7a78ae4e | 2219 | int sclass; |
c906108c SS |
2220 | |
2221 | QUIT; | |
2222 | ||
7a78ae4e ND |
2223 | bfd_coff_swap_sym_in (abfd, sraw_symbol, &symbol); |
2224 | sclass = symbol.n_sclass; | |
2225 | ||
c906108c SS |
2226 | switch (sclass) |
2227 | { | |
2228 | case C_EXT: | |
2229 | case C_HIDEXT: | |
55bcecda | 2230 | case C_WEAKEXT: |
c906108c SS |
2231 | { |
2232 | /* The CSECT auxent--always the last auxent. */ | |
2233 | union internal_auxent csect_aux; | |
2234 | unsigned int symnum_before = ssymnum; | |
2235 | ||
96baa820 | 2236 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2237 | &ssymnum, objfile); |
2238 | if (symbol.n_numaux > 1) | |
2239 | { | |
2240 | bfd_coff_swap_aux_in | |
2241 | (objfile->obfd, | |
c5aa993b | 2242 | sraw_symbol - coff_data (abfd)->local_symesz, |
c906108c SS |
2243 | symbol.n_type, |
2244 | symbol.n_sclass, | |
2245 | symbol.n_numaux - 1, | |
2246 | symbol.n_numaux, | |
2247 | &csect_aux); | |
2248 | } | |
2249 | else | |
96baa820 | 2250 | csect_aux = main_aux[0]; |
c906108c | 2251 | |
977adac5 ND |
2252 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2253 | if (namestring[0] == '$' | |
c906108c SS |
2254 | || (namestring[0] == '.' && namestring[1] == '$')) |
2255 | break; | |
2256 | ||
2257 | switch (csect_aux.x_csect.x_smtyp & 0x7) | |
2258 | { | |
2259 | case XTY_SD: | |
2260 | switch (csect_aux.x_csect.x_smclas) | |
2261 | { | |
2262 | case XMC_PR: | |
2263 | if (last_csect_name) | |
2264 | { | |
2265 | /* If no misc. function recorded in the last | |
581e13c1 | 2266 | seen csect, enter it as a function. This |
c906108c SS |
2267 | will take care of functions like strcmp() |
2268 | compiled by xlc. */ | |
2269 | ||
2270 | if (!misc_func_recorded) | |
2271 | { | |
ec92004f | 2272 | record_minimal_symbol |
8dddcb8f | 2273 | (reader, last_csect_name, last_csect_val, |
ec92004f JB |
2274 | mst_text, last_csect_sec, objfile); |
2275 | misc_func_recorded = 1; | |
c906108c SS |
2276 | } |
2277 | ||
2278 | if (pst != NULL) | |
2279 | { | |
2280 | /* We have to allocate one psymtab for | |
2281 | each program csect, because their text | |
2282 | sections need not be adjacent. */ | |
2283 | xcoff_end_psymtab | |
5c80ed9d TT |
2284 | (objfile, pst, psymtab_include_list, |
2285 | includes_used, symnum_before, dependency_list, | |
c906108c SS |
2286 | dependencies_used, textlow_not_set); |
2287 | includes_used = 0; | |
2288 | dependencies_used = 0; | |
2289 | /* Give all psymtabs for this source file the same | |
2290 | name. */ | |
2291 | pst = xcoff_start_psymtab | |
d4f3574e | 2292 | (objfile, |
c906108c | 2293 | filestring, |
939652a5 | 2294 | symnum_before); |
c906108c SS |
2295 | } |
2296 | } | |
977adac5 ND |
2297 | /* Activate the misc_func_recorded mechanism for |
2298 | compiler- and linker-generated CSECTs like ".strcmp" | |
2299 | and "@FIX1". */ | |
2300 | if (namestring && (namestring[0] == '.' | |
2301 | || namestring[0] == '@')) | |
c906108c SS |
2302 | { |
2303 | last_csect_name = namestring; | |
2304 | last_csect_val = symbol.n_value; | |
ec92004f | 2305 | last_csect_sec = symbol.n_scnum; |
c906108c SS |
2306 | } |
2307 | if (pst != NULL) | |
2308 | { | |
2309 | CORE_ADDR highval = | |
a109c7c1 MS |
2310 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; |
2311 | ||
79748972 | 2312 | if (highval > pst->raw_text_high ()) |
4ae976d1 | 2313 | pst->set_text_high (highval); |
52948f01 | 2314 | if (!pst->text_low_valid |
79748972 | 2315 | || symbol.n_value < pst->raw_text_low ()) |
4ae976d1 | 2316 | pst->set_text_low (symbol.n_value); |
c906108c SS |
2317 | } |
2318 | misc_func_recorded = 0; | |
2319 | break; | |
2320 | ||
2321 | case XMC_RW: | |
6904b546 | 2322 | case XMC_TD: |
c906108c SS |
2323 | /* Data variables are recorded in the minimal symbol |
2324 | table, except for section symbols. */ | |
2325 | if (*namestring != '.') | |
4d1eb6b4 | 2326 | record_minimal_symbol |
8dddcb8f | 2327 | (reader, namestring, symbol.n_value, |
c906108c | 2328 | sclass == C_HIDEXT ? mst_file_data : mst_data, |
4d1eb6b4 | 2329 | symbol.n_scnum, objfile); |
c906108c SS |
2330 | break; |
2331 | ||
2332 | case XMC_TC0: | |
2333 | if (toc_offset) | |
8a3fe4f8 | 2334 | warning (_("More than one XMC_TC0 symbol found.")); |
c906108c SS |
2335 | toc_offset = symbol.n_value; |
2336 | ||
3e43a32a MS |
2337 | /* Make TOC offset relative to start address of |
2338 | section. */ | |
c906108c SS |
2339 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); |
2340 | if (bfd_sect) | |
fd361982 | 2341 | toc_offset -= bfd_section_vma (bfd_sect); |
c906108c SS |
2342 | break; |
2343 | ||
2344 | case XMC_TC: | |
2345 | /* These symbols tell us where the TOC entry for a | |
2346 | variable is, not the variable itself. */ | |
2347 | break; | |
2348 | ||
2349 | default: | |
2350 | break; | |
2351 | } | |
2352 | break; | |
2353 | ||
2354 | case XTY_LD: | |
2355 | switch (csect_aux.x_csect.x_smclas) | |
2356 | { | |
2357 | case XMC_PR: | |
2358 | /* A function entry point. */ | |
2359 | ||
2360 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2361 | first_fun_line_offset = | |
96baa820 | 2362 | main_aux[0].x_sym.x_fcnary.x_fcn.x_lnnoptr; |
a2e3e93f SM |
2363 | |
2364 | record_minimal_symbol | |
8dddcb8f | 2365 | (reader, namestring, symbol.n_value, |
a2e3e93f SM |
2366 | sclass == C_HIDEXT ? mst_file_text : mst_text, |
2367 | symbol.n_scnum, objfile); | |
2368 | misc_func_recorded = 1; | |
c906108c SS |
2369 | break; |
2370 | ||
2371 | case XMC_GL: | |
2372 | /* shared library function trampoline code entry | |
581e13c1 | 2373 | point. */ |
c906108c SS |
2374 | |
2375 | /* record trampoline code entries as | |
2376 | mst_solib_trampoline symbol. When we lookup mst | |
2377 | symbols, we will choose mst_text over | |
581e13c1 | 2378 | mst_solib_trampoline. */ |
ec92004f | 2379 | record_minimal_symbol |
8dddcb8f | 2380 | (reader, namestring, symbol.n_value, |
ec92004f JB |
2381 | mst_solib_trampoline, symbol.n_scnum, objfile); |
2382 | misc_func_recorded = 1; | |
c906108c SS |
2383 | break; |
2384 | ||
2385 | case XMC_DS: | |
2386 | /* The symbols often have the same names as | |
2387 | debug symbols for functions, and confuse | |
2388 | lookup_symbol. */ | |
2389 | break; | |
2390 | ||
2391 | default: | |
2392 | ||
2393 | /* xlc puts each variable in a separate csect, | |
2394 | so we get an XTY_SD for each variable. But | |
2395 | gcc puts several variables in a csect, so | |
2396 | that each variable only gets an XTY_LD. We | |
2397 | still need to record them. This will | |
2398 | typically be XMC_RW; I suspect XMC_RO and | |
2399 | XMC_BS might be possible too. */ | |
2400 | if (*namestring != '.') | |
4d1eb6b4 | 2401 | record_minimal_symbol |
8dddcb8f | 2402 | (reader, namestring, symbol.n_value, |
c906108c | 2403 | sclass == C_HIDEXT ? mst_file_data : mst_data, |
4d1eb6b4 | 2404 | symbol.n_scnum, objfile); |
c906108c SS |
2405 | break; |
2406 | } | |
2407 | break; | |
2408 | ||
2409 | case XTY_CM: | |
2410 | switch (csect_aux.x_csect.x_smclas) | |
2411 | { | |
2412 | case XMC_RW: | |
2413 | case XMC_BS: | |
2414 | /* Common variables are recorded in the minimal symbol | |
2415 | table, except for section symbols. */ | |
2416 | if (*namestring != '.') | |
4d1eb6b4 | 2417 | record_minimal_symbol |
8dddcb8f | 2418 | (reader, namestring, symbol.n_value, |
c906108c | 2419 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, |
4d1eb6b4 | 2420 | symbol.n_scnum, objfile); |
c906108c SS |
2421 | break; |
2422 | } | |
2423 | break; | |
2424 | ||
2425 | default: | |
2426 | break; | |
2427 | } | |
2428 | } | |
2429 | break; | |
2430 | case C_FILE: | |
2431 | { | |
2432 | unsigned int symnum_before; | |
2433 | ||
2434 | symnum_before = ssymnum; | |
96baa820 | 2435 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2436 | &ssymnum, objfile); |
2437 | ||
2438 | /* See if the last csect needs to be recorded. */ | |
2439 | ||
2440 | if (last_csect_name && !misc_func_recorded) | |
2441 | { | |
c906108c SS |
2442 | /* If no misc. function recorded in the last seen csect, enter |
2443 | it as a function. This will take care of functions like | |
2444 | strcmp() compiled by xlc. */ | |
2445 | ||
8dddcb8f | 2446 | record_minimal_symbol (reader, last_csect_name, last_csect_val, |
ec92004f JB |
2447 | mst_text, last_csect_sec, objfile); |
2448 | misc_func_recorded = 1; | |
c906108c SS |
2449 | } |
2450 | ||
2451 | if (pst) | |
2452 | { | |
5c80ed9d TT |
2453 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, |
2454 | includes_used, symnum_before, | |
2455 | dependency_list, dependencies_used, | |
2456 | textlow_not_set); | |
c906108c SS |
2457 | includes_used = 0; |
2458 | dependencies_used = 0; | |
2459 | } | |
2460 | first_fun_line_offset = 0; | |
2461 | ||
2462 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2463 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2464 | do things the standard COFF way and put it in the auxent. | |
2465 | We use the auxent if the symbol is ".file" and an auxent | |
2466 | exists, otherwise use the symbol itself. */ | |
2467 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2468 | { | |
96baa820 | 2469 | filestring = coff_getfilename (&main_aux[0], objfile); |
c906108c SS |
2470 | } |
2471 | else | |
2472 | filestring = namestring; | |
2473 | ||
d4f3574e | 2474 | pst = xcoff_start_psymtab (objfile, |
c906108c | 2475 | filestring, |
939652a5 | 2476 | symnum_before); |
c906108c SS |
2477 | last_csect_name = NULL; |
2478 | } | |
2479 | break; | |
2480 | ||
2481 | default: | |
2482 | { | |
b98664d3 | 2483 | complaint (_("Storage class %d not recognized during scan"), |
3e43a32a | 2484 | sclass); |
c906108c SS |
2485 | } |
2486 | /* FALLTHROUGH */ | |
2487 | ||
86a73007 | 2488 | case C_FCN: |
c906108c SS |
2489 | /* C_FCN is .bf and .ef symbols. I think it is sufficient |
2490 | to handle only the C_FUN and C_EXT. */ | |
c906108c SS |
2491 | |
2492 | case C_BSTAT: | |
2493 | case C_ESTAT: | |
2494 | case C_ARG: | |
2495 | case C_REGPARM: | |
2496 | case C_REG: | |
2497 | case C_TPDEF: | |
2498 | case C_STRTAG: | |
2499 | case C_UNTAG: | |
2500 | case C_ENTAG: | |
2501 | case C_LABEL: | |
2502 | case C_NULL: | |
2503 | ||
2504 | /* C_EINCL means we are switching back to the main file. But there | |
2505 | is no reason to care; the only thing we want to know about | |
2506 | includes is the names of all the included (.h) files. */ | |
2507 | case C_EINCL: | |
2508 | ||
2509 | case C_BLOCK: | |
2510 | ||
2511 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2512 | used instead. */ | |
2513 | case C_STAT: | |
2514 | ||
2515 | /* I don't think the name of the common block (as opposed to the | |
2516 | variables within it) is something which is user visible | |
2517 | currently. */ | |
2518 | case C_BCOMM: | |
2519 | case C_ECOMM: | |
2520 | ||
2521 | case C_PSYM: | |
2522 | case C_RPSYM: | |
2523 | ||
2524 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2525 | so C_LSYM would appear to be only for locals. */ | |
2526 | case C_LSYM: | |
2527 | ||
2528 | case C_AUTO: | |
2529 | case C_RSYM: | |
2530 | { | |
2531 | /* We probably could save a few instructions by assuming that | |
2532 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
7a78ae4e | 2533 | int naux1 = symbol.n_numaux + 1; |
a109c7c1 | 2534 | |
c906108c | 2535 | ssymnum += naux1; |
7a78ae4e | 2536 | sraw_symbol += bfd_coff_symesz (abfd) * naux1; |
c906108c SS |
2537 | } |
2538 | break; | |
2539 | ||
2540 | case C_BINCL: | |
d5d0a62f | 2541 | { |
581e13c1 | 2542 | /* Mark down an include file in the current psymtab. */ |
d5d0a62f | 2543 | enum language tmp_language; |
a109c7c1 | 2544 | |
d5d0a62f EZ |
2545 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2546 | &ssymnum, objfile); | |
2547 | ||
2548 | tmp_language = deduce_language_from_filename (namestring); | |
2549 | ||
2550 | /* Only change the psymtab's language if we've learned | |
2551 | something useful (eg. tmp_language is not language_unknown). | |
2552 | In addition, to match what start_subfile does, never change | |
2553 | from C++ to C. */ | |
2554 | if (tmp_language != language_unknown | |
2555 | && (tmp_language != language_c | |
2556 | || psymtab_language != language_cplus)) | |
2557 | psymtab_language = tmp_language; | |
2558 | ||
2559 | /* In C++, one may expect the same filename to come round many | |
2560 | times, when code is coming alternately from the main file | |
581e13c1 | 2561 | and from inline functions in other files. So I check to see |
d5d0a62f EZ |
2562 | if this is a file we've seen before -- either the main |
2563 | source file, or a previously included file. | |
2564 | ||
2565 | This seems to be a lot of time to be spending on N_SOL, but | |
2566 | things like "break c-exp.y:435" need to work (I | |
2567 | suppose the psymtab_include_list could be hashed or put | |
2568 | in a binary tree, if profiling shows this is a major hog). */ | |
7ecb6532 | 2569 | if (pst && strcmp (namestring, pst->filename) == 0) |
d5d0a62f | 2570 | continue; |
a109c7c1 | 2571 | |
d5d0a62f | 2572 | { |
aa1ee363 | 2573 | int i; |
a109c7c1 | 2574 | |
d5d0a62f | 2575 | for (i = 0; i < includes_used; i++) |
7ecb6532 | 2576 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
d5d0a62f EZ |
2577 | { |
2578 | i = -1; | |
2579 | break; | |
2580 | } | |
2581 | if (i == -1) | |
2582 | continue; | |
2583 | } | |
2584 | psymtab_include_list[includes_used++] = namestring; | |
2585 | if (includes_used >= includes_allocated) | |
2586 | { | |
0d5cff50 | 2587 | const char **orig = psymtab_include_list; |
c906108c | 2588 | |
0d5cff50 | 2589 | psymtab_include_list = (const char **) |
d5d0a62f | 2590 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 2591 | sizeof (const char *)); |
4efb68b1 | 2592 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 2593 | includes_used * sizeof (const char *)); |
d5d0a62f EZ |
2594 | } |
2595 | continue; | |
2596 | } | |
c906108c SS |
2597 | case C_FUN: |
2598 | /* The value of the C_FUN is not the address of the function (it | |
2599 | appears to be the address before linking), but as long as it | |
2600 | is smaller than the actual address, then find_pc_partial_function | |
2601 | will use the minimal symbols instead. I hope. */ | |
2602 | ||
2603 | case C_GSYM: | |
2604 | case C_ECOML: | |
2605 | case C_DECL: | |
2606 | case C_STSYM: | |
d5d0a62f | 2607 | { |
e28566f7 | 2608 | const char *p; |
a109c7c1 | 2609 | |
d5d0a62f EZ |
2610 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2611 | &ssymnum, objfile); | |
2612 | ||
ed4b0e6a | 2613 | p = strchr (namestring, ':'); |
d5d0a62f EZ |
2614 | if (!p) |
2615 | continue; /* Not a debugging symbol. */ | |
2616 | ||
2617 | /* Main processing section for debugging symbols which | |
2618 | the initial read through the symbol tables needs to worry | |
2619 | about. If we reach this point, the symbol which we are | |
2620 | considering is definitely one we are interested in. | |
2621 | p must also contain the (valid) index into the namestring | |
2622 | which indicates the debugging type symbol. */ | |
2623 | ||
2624 | switch (p[1]) | |
2625 | { | |
2626 | case 'S': | |
5e2b427d | 2627 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 2628 | namestring = gdbarch_static_transform_name |
5e2b427d | 2629 | (gdbarch, namestring); |
149ad273 | 2630 | |
31edb802 CB |
2631 | add_psymbol_to_list (gdb::string_view (namestring, |
2632 | p - namestring), | |
2633 | true, VAR_DOMAIN, LOC_STATIC, | |
79748972 | 2634 | SECT_OFF_DATA (objfile), |
75aedd27 | 2635 | psymbol_placement::STATIC, |
1762568f | 2636 | symbol.n_value, |
d5d0a62f EZ |
2637 | psymtab_language, objfile); |
2638 | continue; | |
2639 | ||
2640 | case 'G': | |
d5d0a62f | 2641 | /* The addresses in these entries are reported to be |
581e13c1 | 2642 | wrong. See the code that reads 'G's for symtabs. */ |
31edb802 CB |
2643 | add_psymbol_to_list (gdb::string_view (namestring, |
2644 | p - namestring), | |
2645 | true, VAR_DOMAIN, LOC_STATIC, | |
79748972 | 2646 | SECT_OFF_DATA (objfile), |
75aedd27 | 2647 | psymbol_placement::GLOBAL, |
1762568f | 2648 | symbol.n_value, |
d5d0a62f EZ |
2649 | psymtab_language, objfile); |
2650 | continue; | |
2651 | ||
2652 | case 'T': | |
2653 | /* When a 'T' entry is defining an anonymous enum, it | |
2654 | may have a name which is the empty string, or a | |
2655 | single space. Since they're not really defining a | |
2656 | symbol, those shouldn't go in the partial symbol | |
2657 | table. We do pick up the elements of such enums at | |
2658 | 'check_enum:', below. */ | |
2659 | if (p >= namestring + 2 | |
2660 | || (p == namestring + 1 | |
2661 | && namestring[0] != ' ')) | |
2662 | { | |
31edb802 CB |
2663 | add_psymbol_to_list (gdb::string_view (namestring, |
2664 | p - namestring), | |
2665 | true, STRUCT_DOMAIN, LOC_TYPEDEF, -1, | |
75aedd27 | 2666 | psymbol_placement::STATIC, |
1762568f | 2667 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2668 | if (p[2] == 't') |
2669 | { | |
2670 | /* Also a typedef with the same name. */ | |
31edb802 CB |
2671 | add_psymbol_to_list (gdb::string_view (namestring, |
2672 | p - namestring), | |
2673 | true, VAR_DOMAIN, LOC_TYPEDEF, -1, | |
75aedd27 | 2674 | psymbol_placement::STATIC, |
1762568f | 2675 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2676 | p += 1; |
2677 | } | |
d5d0a62f EZ |
2678 | } |
2679 | goto check_enum; | |
2680 | ||
2681 | case 't': | |
581e13c1 | 2682 | if (p != namestring) /* a name is there, not just :T... */ |
d5d0a62f | 2683 | { |
31edb802 CB |
2684 | add_psymbol_to_list (gdb::string_view (namestring, |
2685 | p - namestring), | |
2686 | true, VAR_DOMAIN, LOC_TYPEDEF, -1, | |
75aedd27 | 2687 | psymbol_placement::STATIC, |
1762568f | 2688 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2689 | } |
2690 | check_enum: | |
2691 | /* If this is an enumerated type, we need to | |
2692 | add all the enum constants to the partial symbol | |
2693 | table. This does not cover enums without names, e.g. | |
2694 | "enum {a, b} c;" in C, but fortunately those are | |
2695 | rare. There is no way for GDB to find those from the | |
2696 | enum type without spending too much time on it. Thus | |
2697 | to solve this problem, the compiler needs to put out the | |
2698 | enum in a nameless type. GCC2 does this. */ | |
2699 | ||
2700 | /* We are looking for something of the form | |
2701 | <name> ":" ("t" | "T") [<number> "="] "e" | |
2702 | {<constant> ":" <value> ","} ";". */ | |
2703 | ||
2704 | /* Skip over the colon and the 't' or 'T'. */ | |
2705 | p += 2; | |
2706 | /* This type may be given a number. Also, numbers can come | |
2707 | in pairs like (0,26). Skip over it. */ | |
2708 | while ((*p >= '0' && *p <= '9') | |
2709 | || *p == '(' || *p == ',' || *p == ')' | |
2710 | || *p == '=') | |
2711 | p++; | |
2712 | ||
2713 | if (*p++ == 'e') | |
2714 | { | |
3e43a32a MS |
2715 | /* The aix4 compiler emits extra crud before the |
2716 | members. */ | |
d5d0a62f EZ |
2717 | if (*p == '-') |
2718 | { | |
2719 | /* Skip over the type (?). */ | |
2720 | while (*p != ':') | |
2721 | p++; | |
2722 | ||
2723 | /* Skip over the colon. */ | |
2724 | p++; | |
2725 | } | |
2726 | ||
2727 | /* We have found an enumerated type. */ | |
2728 | /* According to comments in read_enum_type | |
2729 | a comma could end it instead of a semicolon. | |
2730 | I don't know where that happens. | |
2731 | Accept either. */ | |
2732 | while (*p && *p != ';' && *p != ',') | |
2733 | { | |
e28566f7 | 2734 | const char *q; |
d5d0a62f EZ |
2735 | |
2736 | /* Check for and handle cretinous dbx symbol name | |
2737 | continuation! */ | |
2738 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
2739 | p = next_symbol_text (objfile); | |
2740 | ||
2741 | /* Point to the character after the name | |
2742 | of the enum constant. */ | |
2743 | for (q = p; *q && *q != ':'; q++) | |
2744 | ; | |
2745 | /* Note that the value doesn't matter for | |
2746 | enum constants in psymtabs, just in symtabs. */ | |
31edb802 | 2747 | add_psymbol_to_list (gdb::string_view (p, q - p), true, |
79748972 | 2748 | VAR_DOMAIN, LOC_CONST, -1, |
75aedd27 | 2749 | psymbol_placement::STATIC, |
d5d0a62f EZ |
2750 | 0, psymtab_language, objfile); |
2751 | /* Point past the name. */ | |
2752 | p = q; | |
2753 | /* Skip over the value. */ | |
2754 | while (*p && *p != ',') | |
2755 | p++; | |
2756 | /* Advance past the comma. */ | |
2757 | if (*p) | |
2758 | p++; | |
2759 | } | |
2760 | } | |
2761 | continue; | |
2762 | ||
2763 | case 'c': | |
2764 | /* Constant, e.g. from "const" in Pascal. */ | |
31edb802 CB |
2765 | add_psymbol_to_list (gdb::string_view (namestring, |
2766 | p - namestring), | |
2767 | true, VAR_DOMAIN, LOC_CONST, -1, | |
75aedd27 | 2768 | psymbol_placement::STATIC, |
d5d0a62f EZ |
2769 | 0, psymtab_language, objfile); |
2770 | continue; | |
2771 | ||
2772 | case 'f': | |
2773 | if (! pst) | |
2774 | { | |
2775 | int name_len = p - namestring; | |
224c3ddb | 2776 | char *name = (char *) xmalloc (name_len + 1); |
a109c7c1 | 2777 | |
d5d0a62f EZ |
2778 | memcpy (name, namestring, name_len); |
2779 | name[name_len] = '\0'; | |
23136709 | 2780 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2781 | xfree (name); |
2782 | } | |
31edb802 CB |
2783 | add_psymbol_to_list (gdb::string_view (namestring, |
2784 | p - namestring), | |
2785 | true, VAR_DOMAIN, LOC_BLOCK, | |
79748972 | 2786 | SECT_OFF_TEXT (objfile), |
75aedd27 | 2787 | psymbol_placement::STATIC, |
1762568f | 2788 | symbol.n_value, |
d5d0a62f EZ |
2789 | psymtab_language, objfile); |
2790 | continue; | |
2791 | ||
2792 | /* Global functions were ignored here, but now they | |
2793 | are put into the global psymtab like one would expect. | |
2794 | They're also in the minimal symbol table. */ | |
2795 | case 'F': | |
2796 | if (! pst) | |
2797 | { | |
2798 | int name_len = p - namestring; | |
224c3ddb | 2799 | char *name = (char *) xmalloc (name_len + 1); |
a109c7c1 | 2800 | |
d5d0a62f EZ |
2801 | memcpy (name, namestring, name_len); |
2802 | name[name_len] = '\0'; | |
23136709 | 2803 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2804 | xfree (name); |
2805 | } | |
9f1d5432 PH |
2806 | |
2807 | /* We need only the minimal symbols for these | |
581e13c1 | 2808 | loader-generated definitions. Keeping the global |
9f1d5432 | 2809 | symbols leads to "in psymbols but not in symbols" |
581e13c1 | 2810 | errors. */ |
61012eef | 2811 | if (startswith (namestring, "@FIX")) |
9f1d5432 PH |
2812 | continue; |
2813 | ||
31edb802 CB |
2814 | add_psymbol_to_list (gdb::string_view (namestring, |
2815 | p - namestring), | |
2816 | true, VAR_DOMAIN, LOC_BLOCK, | |
79748972 | 2817 | SECT_OFF_TEXT (objfile), |
75aedd27 | 2818 | psymbol_placement::GLOBAL, |
1762568f | 2819 | symbol.n_value, |
d5d0a62f EZ |
2820 | psymtab_language, objfile); |
2821 | continue; | |
2822 | ||
2823 | /* Two things show up here (hopefully); static symbols of | |
2824 | local scope (static used inside braces) or extensions | |
2825 | of structure symbols. We can ignore both. */ | |
2826 | case 'V': | |
2827 | case '(': | |
2828 | case '0': | |
2829 | case '1': | |
2830 | case '2': | |
2831 | case '3': | |
2832 | case '4': | |
2833 | case '5': | |
2834 | case '6': | |
2835 | case '7': | |
2836 | case '8': | |
2837 | case '9': | |
2838 | case '-': | |
3e43a32a MS |
2839 | case '#': /* For symbol identification (used in |
2840 | live ranges). */ | |
d5d0a62f EZ |
2841 | continue; |
2842 | ||
2843 | case ':': | |
2844 | /* It is a C++ nested symbol. We don't need to record it | |
2845 | (I don't think); if we try to look up foo::bar::baz, | |
2846 | then symbols for the symtab containing foo should get | |
2847 | read in, I think. */ | |
2848 | /* Someone says sun cc puts out symbols like | |
2849 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2850 | which would get here with a symbol type of ':'. */ | |
2851 | continue; | |
2852 | ||
2853 | default: | |
3e43a32a MS |
2854 | /* Unexpected symbol descriptor. The second and |
2855 | subsequent stabs of a continued stab can show up | |
2856 | here. The question is whether they ever can mimic | |
2857 | a normal stab--it would be nice if not, since we | |
2858 | certainly don't want to spend the time searching to | |
2859 | the end of every string looking for a | |
2860 | backslash. */ | |
d5d0a62f | 2861 | |
b98664d3 | 2862 | complaint (_("unknown symbol descriptor `%c'"), p[1]); |
d5d0a62f EZ |
2863 | |
2864 | /* Ignore it; perhaps it is an extension that we don't | |
2865 | know about. */ | |
2866 | continue; | |
2867 | } | |
2868 | } | |
c906108c SS |
2869 | } |
2870 | } | |
2871 | ||
2872 | if (pst) | |
2873 | { | |
5c80ed9d | 2874 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
c906108c SS |
2875 | ssymnum, dependency_list, |
2876 | dependencies_used, textlow_not_set); | |
2877 | } | |
2878 | ||
581e13c1 MS |
2879 | /* Record the toc offset value of this symbol table into objfile |
2880 | structure. If no XMC_TC0 is found, toc_offset should be zero. | |
2881 | Another place to obtain this information would be file auxiliary | |
2882 | header. */ | |
c906108c | 2883 | |
b8b98ad1 | 2884 | XCOFF_DATA (objfile)->toc_offset = toc_offset; |
c906108c SS |
2885 | } |
2886 | ||
2887 | /* Return the toc offset value for a given objfile. */ | |
2888 | ||
2889 | CORE_ADDR | |
63807e1d | 2890 | xcoff_get_toc_offset (struct objfile *objfile) |
c906108c SS |
2891 | { |
2892 | if (objfile) | |
b8b98ad1 | 2893 | return XCOFF_DATA (objfile)->toc_offset; |
c906108c SS |
2894 | return 0; |
2895 | } | |
2896 | ||
2897 | /* Scan and build partial symbols for a symbol file. | |
2898 | We have been initialized by a call to dbx_symfile_init, which | |
2899 | put all the relevant info into a "struct dbx_symfile_info", | |
2900 | hung off the objfile structure. | |
2901 | ||
2902 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
581e13c1 MS |
2903 | various sections are (depending where the sections were actually |
2904 | loaded). */ | |
c906108c SS |
2905 | |
2906 | static void | |
b15cc25c | 2907 | xcoff_initial_scan (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
2908 | { |
2909 | bfd *abfd; | |
2910 | int val; | |
c5aa993b JM |
2911 | int num_symbols; /* # of symbols */ |
2912 | file_ptr symtab_offset; /* symbol table and */ | |
2913 | file_ptr stringtab_offset; /* string table file offsets */ | |
02dc647e | 2914 | struct xcoff_symfile_info *info; |
4262abfb | 2915 | const char *name; |
c906108c SS |
2916 | unsigned int size; |
2917 | ||
b8b98ad1 | 2918 | info = XCOFF_DATA (objfile); |
c906108c | 2919 | symfile_bfd = abfd = objfile->obfd; |
4262abfb | 2920 | name = objfile_name (objfile); |
c906108c SS |
2921 | |
2922 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2923 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2924 | stringtab_offset = symtab_offset + | |
c5aa993b | 2925 | num_symbols * coff_data (abfd)->local_symesz; |
c906108c SS |
2926 | |
2927 | info->min_lineno_offset = 0; | |
2928 | info->max_lineno_offset = 0; | |
2929 | bfd_map_over_sections (abfd, find_linenos, info); | |
2930 | ||
2931 | if (num_symbols > 0) | |
2932 | { | |
2933 | /* Read the string table. */ | |
2934 | init_stringtab (abfd, stringtab_offset, objfile); | |
2935 | ||
97cbe998 SDJ |
2936 | /* Read the .debug section, if present and if we're not ignoring |
2937 | it. */ | |
2938 | if (!(objfile->flags & OBJF_READNEVER)) | |
2939 | { | |
2940 | struct bfd_section *secp; | |
2941 | bfd_size_type length; | |
2942 | bfd_byte *debugsec = NULL; | |
c906108c | 2943 | |
97cbe998 SDJ |
2944 | secp = bfd_get_section_by_name (abfd, ".debug"); |
2945 | if (secp) | |
2946 | { | |
fd361982 | 2947 | length = bfd_section_size (secp); |
97cbe998 SDJ |
2948 | if (length) |
2949 | { | |
2950 | debugsec | |
2951 | = (bfd_byte *) obstack_alloc (&objfile->objfile_obstack, | |
2952 | length); | |
c906108c | 2953 | |
97cbe998 SDJ |
2954 | if (!bfd_get_full_section_contents (abfd, secp, &debugsec)) |
2955 | { | |
2956 | error (_("Error reading .debug section of `%s': %s"), | |
2957 | name, bfd_errmsg (bfd_get_error ())); | |
2958 | } | |
2959 | } | |
2960 | } | |
2961 | info->debugsec = (char *) debugsec; | |
2962 | } | |
c906108c SS |
2963 | } |
2964 | ||
2965 | /* Read the symbols. We keep them in core because we will want to | |
2966 | access them randomly in read_symbol*. */ | |
2967 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); | |
2968 | if (val < 0) | |
8a3fe4f8 | 2969 | error (_("Error reading symbols from %s: %s"), |
c906108c SS |
2970 | name, bfd_errmsg (bfd_get_error ())); |
2971 | size = coff_data (abfd)->local_symesz * num_symbols; | |
224c3ddb | 2972 | info->symtbl = (char *) obstack_alloc (&objfile->objfile_obstack, size); |
b8b98ad1 TT |
2973 | info->symtbl_num_syms = num_symbols; |
2974 | ||
2975 | val = bfd_bread (info->symtbl, size, abfd); | |
c906108c | 2976 | if (val != size) |
e2e0b3e5 | 2977 | perror_with_name (_("reading symbol table")); |
c906108c | 2978 | |
6eee24ce TT |
2979 | /* I'm not sure how how good num_symbols is; the rule of thumb in |
2980 | init_psymbol_list was developed for a.out. On the one hand, | |
2981 | num_symbols includes auxents. On the other hand, it doesn't | |
2982 | include N_SLINE. */ | |
2983 | init_psymbol_list (objfile, num_symbols); | |
c906108c | 2984 | |
33c7c59d | 2985 | scoped_free_pendings free_pending; |
d25e8719 | 2986 | minimal_symbol_reader reader (objfile); |
c906108c SS |
2987 | |
2988 | /* Now that the symbol table data of the executable file are all in core, | |
2989 | process them and define symbols accordingly. */ | |
2990 | ||
8dddcb8f | 2991 | scan_xcoff_symtab (reader, objfile); |
c906108c SS |
2992 | |
2993 | /* Install any minimal symbols that have been collected as the current | |
581e13c1 | 2994 | minimal symbols for this objfile. */ |
c906108c | 2995 | |
d25e8719 | 2996 | reader.install (); |
c906108c | 2997 | |
316a8b21 TG |
2998 | /* DWARF2 sections. */ |
2999 | ||
3000 | if (dwarf2_has_info (objfile, &dwarf2_xcoff_names)) | |
3001 | dwarf2_build_psymtabs (objfile); | |
3002 | ||
3003 | dwarf2_build_frame_info (objfile); | |
c906108c SS |
3004 | } |
3005 | \f | |
d4f3574e | 3006 | static void |
3e43a32a | 3007 | xcoff_symfile_offsets (struct objfile *objfile, |
37e136b1 | 3008 | const section_addr_info &addrs) |
c906108c | 3009 | { |
4d1eb6b4 | 3010 | const char *first_section_name; |
c906108c | 3011 | |
4d1eb6b4 | 3012 | default_symfile_offsets (objfile, addrs); |
c906108c | 3013 | |
4d1eb6b4 JB |
3014 | /* Oneof the weird side-effects of default_symfile_offsets is that |
3015 | it sometimes sets some section indices to zero for sections that, | |
3016 | in fact do not exist. See the body of default_symfile_offsets | |
3017 | for more info on when that happens. Undo that, as this then allows | |
3018 | us to test whether the associated section exists or not, and then | |
3019 | access it quickly (without searching it again). */ | |
b8fbeb18 | 3020 | |
6a053cb1 | 3021 | if (objfile->section_offsets.empty ()) |
4d1eb6b4 | 3022 | return; /* Is that even possible? Better safe than sorry. */ |
b8fbeb18 | 3023 | |
fd361982 | 3024 | first_section_name = bfd_section_name (objfile->sections[0].the_bfd_section); |
b8fbeb18 | 3025 | |
4d1eb6b4 JB |
3026 | if (objfile->sect_index_text == 0 |
3027 | && strcmp (first_section_name, ".text") != 0) | |
3028 | objfile->sect_index_text = -1; | |
b8fbeb18 | 3029 | |
4d1eb6b4 JB |
3030 | if (objfile->sect_index_data == 0 |
3031 | && strcmp (first_section_name, ".data") != 0) | |
3032 | objfile->sect_index_data = -1; | |
3033 | ||
3034 | if (objfile->sect_index_bss == 0 | |
3035 | && strcmp (first_section_name, ".bss") != 0) | |
3036 | objfile->sect_index_bss = -1; | |
3037 | ||
3038 | if (objfile->sect_index_rodata == 0 | |
3039 | && strcmp (first_section_name, ".rodata") != 0) | |
3040 | objfile->sect_index_rodata = -1; | |
c906108c SS |
3041 | } |
3042 | ||
3043 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
3044 | ||
00b5771c | 3045 | static const struct sym_fns xcoff_sym_fns = |
c906108c SS |
3046 | { |
3047 | ||
7a78ae4e | 3048 | /* It is possible that coff and xcoff should be merged as |
c906108c SS |
3049 | they do have fundamental similarities (for example, the extra storage |
3050 | classes used for stabs could presumably be recognized in any COFF file). | |
3051 | However, in addition to obvious things like all the csect hair, there are | |
3052 | some subtler differences between xcoffread.c and coffread.c, notably | |
3053 | the fact that coffread.c has no need to read in all the symbols, but | |
3054 | xcoffread.c reads all the symbols and does in fact randomly access them | |
3055 | (in C_BSTAT and line number processing). */ | |
3056 | ||
3e43a32a MS |
3057 | xcoff_new_init, /* init anything gbl to entire symtab */ |
3058 | xcoff_symfile_init, /* read initial info, setup for sym_read() */ | |
3059 | xcoff_initial_scan, /* read a symbol file into symtab */ | |
b11896a5 | 3060 | NULL, /* sym_read_psymbols */ |
3e43a32a MS |
3061 | xcoff_symfile_finish, /* finished with file, cleanup */ |
3062 | xcoff_symfile_offsets, /* xlate offsets ext->int form */ | |
3063 | default_symfile_segments, /* Get segment information from a file. */ | |
3064 | aix_process_linenos, | |
3065 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3066 | NULL, /* sym_probe_fns */ |
00b5771c | 3067 | &psym_functions |
c906108c SS |
3068 | }; |
3069 | ||
d5367fe1 JB |
3070 | /* Same as xcoff_get_n_import_files, but for core files. */ |
3071 | ||
3072 | static int | |
3073 | xcoff_get_core_n_import_files (bfd *abfd) | |
3074 | { | |
3075 | asection *sect = bfd_get_section_by_name (abfd, ".ldinfo"); | |
3076 | gdb_byte buf[4]; | |
3077 | file_ptr offset = 0; | |
3078 | int n_entries = 0; | |
3079 | ||
3080 | if (sect == NULL) | |
3081 | return -1; /* Not a core file. */ | |
3082 | ||
fd361982 | 3083 | for (offset = 0; offset < bfd_section_size (sect);) |
d5367fe1 JB |
3084 | { |
3085 | int next; | |
3086 | ||
3087 | n_entries++; | |
3088 | ||
3089 | if (!bfd_get_section_contents (abfd, sect, buf, offset, 4)) | |
3090 | return -1; | |
3091 | next = bfd_get_32 (abfd, buf); | |
3092 | if (next == 0) | |
3093 | break; /* This is the last entry. */ | |
3094 | offset += next; | |
3095 | } | |
3096 | ||
3097 | /* Return the number of entries, excluding the first one, which is | |
3098 | the path to the executable that produced this core file. */ | |
3099 | return n_entries - 1; | |
3100 | } | |
3101 | ||
3102 | /* Return the number of import files (shared libraries) that the given | |
3103 | BFD depends on. Return -1 if this number could not be computed. */ | |
3104 | ||
3105 | int | |
3106 | xcoff_get_n_import_files (bfd *abfd) | |
3107 | { | |
3108 | asection *sect = bfd_get_section_by_name (abfd, ".loader"); | |
3109 | gdb_byte buf[4]; | |
3110 | int l_nimpid; | |
3111 | ||
3112 | /* If the ".loader" section does not exist, the objfile is probably | |
3113 | not an executable. Might be a core file... */ | |
3114 | if (sect == NULL) | |
3115 | return xcoff_get_core_n_import_files (abfd); | |
3116 | ||
3117 | /* The number of entries in the Import Files Table is stored in | |
3118 | field l_nimpid. This field is always at offset 16, and is | |
3119 | always 4 bytes long. Read those 4 bytes. */ | |
3120 | ||
3121 | if (!bfd_get_section_contents (abfd, sect, buf, 16, 4)) | |
3122 | return -1; | |
3123 | l_nimpid = bfd_get_32 (abfd, buf); | |
3124 | ||
3125 | /* By convention, the first entry is the default LIBPATH value | |
3126 | to be used by the system loader, so it does not count towards | |
3127 | the number of import files. */ | |
3128 | return l_nimpid - 1; | |
3129 | } | |
3130 | ||
c906108c | 3131 | void |
fba45db2 | 3132 | _initialize_xcoffread (void) |
c906108c | 3133 | { |
c256e171 | 3134 | add_symtab_fns (bfd_target_xcoff_flavour, &xcoff_sym_fns); |
c906108c | 3135 | } |