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 }, |
18a8505e | 169 | { NULL, NULL }, /* debug_str_offsets */ |
43988095 | 170 | { NULL, NULL }, /* debug_line_str */ |
316a8b21 | 171 | { ".dwrnges", NULL }, |
43988095 | 172 | { NULL, NULL }, /* debug_rnglists */ |
33f914a1 | 173 | { ".dwpbtyp", NULL }, |
3019eac3 | 174 | { NULL, NULL }, /* debug_addr */ |
316a8b21 TG |
175 | { ".dwframe", NULL }, |
176 | { NULL, NULL }, /* eh_frame */ | |
24d3216f | 177 | { NULL, NULL }, /* gdb_index */ |
927aa2e7 JK |
178 | { NULL, NULL }, /* debug_names */ |
179 | { NULL, NULL }, /* debug_aranges */ | |
24d3216f | 180 | 23 |
316a8b21 TG |
181 | }; |
182 | ||
23136709 KB |
183 | static void |
184 | bf_notfound_complaint (void) | |
185 | { | |
b98664d3 | 186 | complaint (_("line numbers off, `.bf' symbol not found")); |
23136709 | 187 | } |
c906108c | 188 | |
23136709 KB |
189 | static void |
190 | ef_complaint (int arg1) | |
191 | { | |
b98664d3 | 192 | complaint (_("Mismatched .ef symbol ignored starting at symnum %d"), arg1); |
23136709 | 193 | } |
c906108c | 194 | |
23136709 KB |
195 | static void |
196 | eb_complaint (int arg1) | |
197 | { | |
b98664d3 | 198 | complaint (_("Mismatched .eb symbol ignored starting at symnum %d"), arg1); |
23136709 | 199 | } |
c906108c | 200 | |
b15cc25c | 201 | static void xcoff_initial_scan (struct objfile *, symfile_add_flags); |
c906108c | 202 | |
8dddcb8f TT |
203 | static void scan_xcoff_symtab (minimal_symbol_reader &, |
204 | struct objfile *); | |
c906108c | 205 | |
a121b7c1 | 206 | static const char *xcoff_next_symbol_text (struct objfile *); |
c906108c | 207 | |
a14ed312 | 208 | static void record_include_begin (struct coff_symbol *); |
c906108c SS |
209 | |
210 | static void | |
a14ed312 KB |
211 | enter_line_range (struct subfile *, unsigned, unsigned, |
212 | CORE_ADDR, CORE_ADDR, unsigned *); | |
c906108c | 213 | |
a14ed312 | 214 | static void init_stringtab (bfd *, file_ptr, struct objfile *); |
c906108c | 215 | |
a14ed312 | 216 | static void xcoff_symfile_init (struct objfile *); |
c906108c | 217 | |
a14ed312 | 218 | static void xcoff_new_init (struct objfile *); |
c906108c | 219 | |
a14ed312 | 220 | static void xcoff_symfile_finish (struct objfile *); |
c906108c | 221 | |
a14ed312 | 222 | static char *coff_getfilename (union internal_auxent *, struct objfile *); |
c906108c | 223 | |
a14ed312 | 224 | static void read_symbol (struct internal_syment *, int); |
c906108c | 225 | |
a14ed312 | 226 | static int read_symbol_lineno (int); |
c906108c | 227 | |
470d5666 | 228 | static CORE_ADDR read_symbol_nvalue (int); |
c906108c | 229 | |
a14ed312 KB |
230 | static struct symbol *process_xcoff_symbol (struct coff_symbol *, |
231 | struct objfile *); | |
c906108c | 232 | |
891813be | 233 | static void read_xcoff_symtab (struct objfile *, legacy_psymtab *); |
c906108c SS |
234 | |
235 | #if 0 | |
a14ed312 | 236 | static void add_stab_to_list (char *, struct pending_stabs **); |
c906108c SS |
237 | #endif |
238 | ||
a14ed312 | 239 | static struct linetable *arrange_linetable (struct linetable *); |
c906108c | 240 | |
a14ed312 | 241 | static void record_include_end (struct coff_symbol *); |
c906108c | 242 | |
a14ed312 | 243 | static void process_linenos (CORE_ADDR, CORE_ADDR); |
c906108c | 244 | \f |
c5aa993b | 245 | |
c906108c SS |
246 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
247 | code. */ | |
a14ed312 KB |
248 | static int secnum_to_section (int, struct objfile *); |
249 | static asection *secnum_to_bfd_section (int, struct objfile *); | |
c906108c | 250 | |
c5aa993b JM |
251 | struct find_targ_sec_arg |
252 | { | |
253 | int targ_index; | |
254 | int *resultp; | |
255 | asection **bfd_sect; | |
b8fbeb18 | 256 | struct objfile *objfile; |
c5aa993b | 257 | }; |
c906108c | 258 | |
a14ed312 | 259 | static void find_targ_sec (bfd *, asection *, void *); |
c906108c | 260 | |
c5aa993b | 261 | static void |
4efb68b1 | 262 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 263 | { |
c5aa993b | 264 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
b8fbeb18 | 265 | struct objfile *objfile = args->objfile; |
a109c7c1 | 266 | |
c906108c SS |
267 | if (sect->target_index == args->targ_index) |
268 | { | |
269 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
fd361982 | 270 | if (bfd_section_flags (sect) & SEC_CODE) |
b8fbeb18 | 271 | *args->resultp = SECT_OFF_TEXT (objfile); |
fd361982 | 272 | else if (bfd_section_flags (sect) & SEC_LOAD) |
b8fbeb18 | 273 | *args->resultp = SECT_OFF_DATA (objfile); |
c906108c | 274 | else |
65cf3563 | 275 | *args->resultp = gdb_bfd_section_index (abfd, sect); |
c906108c SS |
276 | *args->bfd_sect = sect; |
277 | } | |
278 | } | |
279 | ||
ec92004f JB |
280 | /* Search all BFD sections for the section whose target_index is |
281 | equal to N_SCNUM. Set *BFD_SECT to that section. The section's | |
282 | associated index in the objfile's section_offset table is also | |
283 | stored in *SECNUM. | |
284 | ||
285 | If no match is found, *BFD_SECT is set to NULL, and *SECNUM | |
286 | is set to the text section's number. */ | |
a109c7c1 | 287 | |
ec92004f JB |
288 | static void |
289 | xcoff_secnum_to_sections (int n_scnum, struct objfile *objfile, | |
290 | asection **bfd_sect, int *secnum) | |
291 | { | |
c906108c | 292 | struct find_targ_sec_arg args; |
ec92004f JB |
293 | |
294 | args.targ_index = n_scnum; | |
295 | args.resultp = secnum; | |
296 | args.bfd_sect = bfd_sect; | |
b8fbeb18 | 297 | args.objfile = objfile; |
ec92004f JB |
298 | |
299 | *bfd_sect = NULL; | |
300 | *secnum = SECT_OFF_TEXT (objfile); | |
301 | ||
c906108c | 302 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
c906108c SS |
303 | } |
304 | ||
ec92004f JB |
305 | /* Return the section number (SECT_OFF_*) that N_SCNUM points to. */ |
306 | ||
307 | static int | |
308 | secnum_to_section (int n_scnum, struct objfile *objfile) | |
309 | { | |
310 | int secnum; | |
311 | asection *ignored; | |
312 | ||
313 | xcoff_secnum_to_sections (n_scnum, objfile, &ignored, &secnum); | |
314 | return secnum; | |
315 | } | |
316 | ||
317 | /* Return the BFD section that N_SCNUM points to. */ | |
318 | ||
c906108c | 319 | static asection * |
ec92004f | 320 | secnum_to_bfd_section (int n_scnum, struct objfile *objfile) |
c906108c | 321 | { |
ec92004f JB |
322 | int ignored; |
323 | asection *bfd_sect; | |
a109c7c1 | 324 | |
ec92004f JB |
325 | xcoff_secnum_to_sections (n_scnum, objfile, &bfd_sect, &ignored); |
326 | return bfd_sect; | |
c906108c SS |
327 | } |
328 | \f | |
581e13c1 | 329 | /* add a given stab string into given stab vector. */ |
c906108c SS |
330 | |
331 | #if 0 | |
332 | ||
333 | static void | |
fba45db2 | 334 | add_stab_to_list (char *stabname, struct pending_stabs **stabvector) |
c906108c | 335 | { |
c5aa993b JM |
336 | if (*stabvector == NULL) |
337 | { | |
338 | *stabvector = (struct pending_stabs *) | |
339 | xmalloc (sizeof (struct pending_stabs) + | |
340 | INITIAL_STABVECTOR_LENGTH * sizeof (char *)); | |
341 | (*stabvector)->count = 0; | |
342 | (*stabvector)->length = INITIAL_STABVECTOR_LENGTH; | |
343 | } | |
344 | else if ((*stabvector)->count >= (*stabvector)->length) | |
345 | { | |
346 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
347 | *stabvector = (struct pending_stabs *) | |
348 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + | |
3e43a32a | 349 | (*stabvector)->length * sizeof (char *)); |
c5aa993b JM |
350 | } |
351 | (*stabvector)->stab[(*stabvector)->count++] = stabname; | |
c906108c SS |
352 | } |
353 | ||
354 | #endif | |
c5aa993b | 355 | \f/* *INDENT-OFF* */ |
c906108c SS |
356 | /* Linenos are processed on a file-by-file basis. |
357 | ||
358 | Two reasons: | |
359 | ||
c5aa993b | 360 | 1) xlc (IBM's native c compiler) postpones static function code |
581e13c1 | 361 | emission to the end of a compilation unit. This way it can |
c5aa993b | 362 | determine if those functions (statics) are needed or not, and |
581e13c1 | 363 | can do some garbage collection (I think). This makes line |
c5aa993b JM |
364 | numbers and corresponding addresses unordered, and we end up |
365 | with a line table like: | |
366 | ||
367 | ||
368 | lineno addr | |
369 | foo() 10 0x100 | |
370 | 20 0x200 | |
371 | 30 0x300 | |
372 | ||
373 | foo3() 70 0x400 | |
374 | 80 0x500 | |
375 | 90 0x600 | |
376 | ||
377 | static foo2() | |
378 | 40 0x700 | |
379 | 50 0x800 | |
380 | 60 0x900 | |
381 | ||
382 | and that breaks gdb's binary search on line numbers, if the | |
581e13c1 | 383 | above table is not sorted on line numbers. And that sort |
c5aa993b JM |
384 | should be on function based, since gcc can emit line numbers |
385 | like: | |
386 | ||
387 | 10 0x100 - for the init/test part of a for stmt. | |
388 | 20 0x200 | |
389 | 30 0x300 | |
390 | 10 0x400 - for the increment part of a for stmt. | |
391 | ||
581e13c1 | 392 | arrange_linetable() will do this sorting. |
c5aa993b JM |
393 | |
394 | 2) aix symbol table might look like: | |
395 | ||
396 | c_file // beginning of a new file | |
397 | .bi // beginning of include file | |
398 | .ei // end of include file | |
399 | .bi | |
400 | .ei | |
401 | ||
402 | basically, .bi/.ei pairs do not necessarily encapsulate | |
581e13c1 | 403 | their scope. They need to be recorded, and processed later |
c5aa993b JM |
404 | on when we come the end of the compilation unit. |
405 | Include table (inclTable) and process_linenos() handle | |
406 | that. */ | |
9846de1b | 407 | /* *INDENT-ON* */ |
c906108c | 408 | |
c5aa993b | 409 | |
581e13c1 MS |
410 | /* Given a line table with function entries are marked, arrange its |
411 | functions in ascending order and strip off function entry markers | |
412 | and return it in a newly created table. If the old one is good | |
413 | enough, return the old one. */ | |
c906108c SS |
414 | /* FIXME: I think all this stuff can be replaced by just passing |
415 | sort_linevec = 1 to end_symtab. */ | |
416 | ||
417 | static struct linetable * | |
b095261a | 418 | arrange_linetable (struct linetable *oldLineTb) |
c906108c | 419 | { |
c5aa993b JM |
420 | int ii, jj, newline, /* new line count */ |
421 | function_count; /* # of functions */ | |
c906108c | 422 | |
c5aa993b JM |
423 | struct linetable_entry *fentry; /* function entry vector */ |
424 | int fentry_size; /* # of function entries */ | |
425 | struct linetable *newLineTb; /* new line table */ | |
a85c52f2 | 426 | int extra_lines = 0; |
c906108c SS |
427 | |
428 | #define NUM_OF_FUNCTIONS 20 | |
429 | ||
430 | fentry_size = NUM_OF_FUNCTIONS; | |
8d749320 | 431 | fentry = XNEWVEC (struct linetable_entry, fentry_size); |
c906108c | 432 | |
c5aa993b JM |
433 | for (function_count = 0, ii = 0; ii < oldLineTb->nitems; ++ii) |
434 | { | |
8c95582d AB |
435 | if (oldLineTb->item[ii].is_stmt == 0) |
436 | continue; | |
437 | ||
c5aa993b | 438 | if (oldLineTb->item[ii].line == 0) |
581e13c1 | 439 | { /* Function entry found. */ |
c5aa993b | 440 | if (function_count >= fentry_size) |
581e13c1 | 441 | { /* Make sure you have room. */ |
c5aa993b JM |
442 | fentry_size *= 2; |
443 | fentry = (struct linetable_entry *) | |
3e43a32a MS |
444 | xrealloc (fentry, |
445 | fentry_size * sizeof (struct linetable_entry)); | |
c5aa993b JM |
446 | } |
447 | fentry[function_count].line = ii; | |
8c95582d | 448 | fentry[function_count].is_stmt = 1; |
c5aa993b JM |
449 | fentry[function_count].pc = oldLineTb->item[ii].pc; |
450 | ++function_count; | |
a85c52f2 UW |
451 | |
452 | /* If the function was compiled with XLC, we may have to add an | |
453 | extra line entry later. Reserve space for that. */ | |
454 | if (ii + 1 < oldLineTb->nitems | |
455 | && oldLineTb->item[ii].pc != oldLineTb->item[ii + 1].pc) | |
456 | extra_lines++; | |
c5aa993b | 457 | } |
c906108c | 458 | } |
c906108c | 459 | |
c5aa993b JM |
460 | if (function_count == 0) |
461 | { | |
b8c9b27d | 462 | xfree (fentry); |
c5aa993b JM |
463 | return oldLineTb; |
464 | } | |
c906108c | 465 | else if (function_count > 1) |
39ef2f62 CB |
466 | std::sort (fentry, fentry + function_count, |
467 | [] (const linetable_entry <e1, const linetable_entry& lte2) | |
468 | { return lte1.pc < lte2.pc; }); | |
c906108c | 469 | |
581e13c1 | 470 | /* Allocate a new line table. */ |
c906108c SS |
471 | newLineTb = (struct linetable *) |
472 | xmalloc | |
c5aa993b | 473 | (sizeof (struct linetable) + |
a85c52f2 | 474 | (oldLineTb->nitems - function_count + extra_lines) * sizeof (struct linetable_entry)); |
c906108c | 475 | |
581e13c1 MS |
476 | /* If line table does not start with a function beginning, copy up until |
477 | a function begin. */ | |
c906108c SS |
478 | |
479 | newline = 0; | |
480 | if (oldLineTb->item[0].line != 0) | |
c5aa993b JM |
481 | for (newline = 0; |
482 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
c906108c SS |
483 | newLineTb->item[newline] = oldLineTb->item[newline]; |
484 | ||
581e13c1 | 485 | /* Now copy function lines one by one. */ |
c906108c | 486 | |
c5aa993b JM |
487 | for (ii = 0; ii < function_count; ++ii) |
488 | { | |
a85c52f2 UW |
489 | /* If the function was compiled with XLC, we may have to add an |
490 | extra line to cover the function prologue. */ | |
491 | jj = fentry[ii].line; | |
492 | if (jj + 1 < oldLineTb->nitems | |
493 | && oldLineTb->item[jj].pc != oldLineTb->item[jj + 1].pc) | |
494 | { | |
495 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
496 | newLineTb->item[newline].line = oldLineTb->item[jj + 1].line; | |
497 | newline++; | |
498 | } | |
499 | ||
c5aa993b JM |
500 | for (jj = fentry[ii].line + 1; |
501 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
502 | ++jj, ++newline) | |
503 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
504 | } | |
b8c9b27d | 505 | xfree (fentry); |
a85c52f2 UW |
506 | /* The number of items in the line table must include these |
507 | extra lines which were added in case of XLC compiled functions. */ | |
508 | newLineTb->nitems = oldLineTb->nitems - function_count + extra_lines; | |
c5aa993b JM |
509 | return newLineTb; |
510 | } | |
c906108c SS |
511 | |
512 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the | |
581e13c1 | 513 | following `IncludeChain'. At the end of each symtab (end_symtab), |
c906108c | 514 | we will determine if we should create additional symtab's to |
581e13c1 | 515 | represent if (the include files. */ |
c906108c SS |
516 | |
517 | ||
c5aa993b JM |
518 | typedef struct _inclTable |
519 | { | |
520 | char *name; /* include filename */ | |
c906108c SS |
521 | |
522 | /* Offsets to the line table. end points to the last entry which is | |
523 | part of this include file. */ | |
c5aa993b JM |
524 | int begin, end; |
525 | ||
c906108c | 526 | struct subfile *subfile; |
581e13c1 | 527 | unsigned funStartLine; /* Start line # of its function. */ |
c5aa993b JM |
528 | } |
529 | InclTable; | |
c906108c SS |
530 | |
531 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
c5aa993b JM |
532 | static InclTable *inclTable; /* global include table */ |
533 | static int inclIndx; /* last entry to table */ | |
534 | static int inclLength; /* table length */ | |
535 | static int inclDepth; /* nested include depth */ | |
c906108c | 536 | |
a14ed312 | 537 | static void allocate_include_entry (void); |
c906108c SS |
538 | |
539 | static void | |
fba45db2 | 540 | record_include_begin (struct coff_symbol *cs) |
c906108c SS |
541 | { |
542 | if (inclDepth) | |
543 | { | |
544 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
c5aa993b | 545 | of course, but in corresponding .s files.). */ |
c906108c SS |
546 | |
547 | /* This can happen with old versions of GCC. | |
c5aa993b JM |
548 | GCC 2.3.3-930426 does not exhibit this on a test case which |
549 | a user said produced the message for him. */ | |
b98664d3 | 550 | complaint (_("Nested C_BINCL symbols")); |
c906108c SS |
551 | } |
552 | ++inclDepth; | |
553 | ||
554 | allocate_include_entry (); | |
555 | ||
c5aa993b JM |
556 | inclTable[inclIndx].name = cs->c_name; |
557 | inclTable[inclIndx].begin = cs->c_value; | |
c906108c SS |
558 | } |
559 | ||
560 | static void | |
fba45db2 | 561 | record_include_end (struct coff_symbol *cs) |
c906108c | 562 | { |
c5aa993b | 563 | InclTable *pTbl; |
c906108c SS |
564 | |
565 | if (inclDepth == 0) | |
566 | { | |
b98664d3 | 567 | complaint (_("Mismatched C_BINCL/C_EINCL pair")); |
c906108c SS |
568 | } |
569 | ||
570 | allocate_include_entry (); | |
571 | ||
c5aa993b | 572 | pTbl = &inclTable[inclIndx]; |
c906108c SS |
573 | pTbl->end = cs->c_value; |
574 | ||
575 | --inclDepth; | |
576 | ++inclIndx; | |
577 | } | |
578 | ||
579 | static void | |
fba45db2 | 580 | allocate_include_entry (void) |
c906108c SS |
581 | { |
582 | if (inclTable == NULL) | |
583 | { | |
8d749320 | 584 | inclTable = XCNEWVEC (InclTable, INITIAL_INCLUDE_TABLE_LENGTH); |
c906108c SS |
585 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; |
586 | inclIndx = 0; | |
587 | } | |
588 | else if (inclIndx >= inclLength) | |
589 | { | |
590 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
8d749320 | 591 | inclTable = XRESIZEVEC (InclTable, inclTable, inclLength); |
c5aa993b JM |
592 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, |
593 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
c906108c SS |
594 | } |
595 | } | |
596 | ||
597 | /* Global variable to pass the psymtab down to all the routines involved | |
598 | in psymtab to symtab processing. */ | |
891813be | 599 | static legacy_psymtab *this_symtab_psymtab; |
c906108c | 600 | |
5c80ed9d TT |
601 | /* Objfile related to this_symtab_psymtab; set at the same time. */ |
602 | static struct objfile *this_symtab_objfile; | |
603 | ||
c906108c | 604 | /* given the start and end addresses of a compilation unit (or a csect, |
581e13c1 | 605 | at times) process its lines and create appropriate line vectors. */ |
c906108c SS |
606 | |
607 | static void | |
fba45db2 | 608 | process_linenos (CORE_ADDR start, CORE_ADDR end) |
c906108c SS |
609 | { |
610 | int offset, ii; | |
b8b98ad1 | 611 | file_ptr max_offset |
5c80ed9d | 612 | = XCOFF_DATA (this_symtab_objfile)->max_lineno_offset; |
c906108c SS |
613 | |
614 | /* subfile structure for the main compilation unit. */ | |
615 | struct subfile main_subfile; | |
616 | ||
617 | /* In the main source file, any time we see a function entry, we | |
618 | reset this variable to function's absolute starting line number. | |
619 | All the following line numbers in the function are relative to | |
620 | this, and we record absolute line numbers in record_line(). */ | |
621 | ||
622 | unsigned int main_source_baseline = 0; | |
623 | ||
624 | unsigned *firstLine; | |
625 | ||
626 | offset = | |
c5aa993b | 627 | ((struct symloc *) this_symtab_psymtab->read_symtab_private)->lineno_off; |
c906108c SS |
628 | if (offset == 0) |
629 | goto return_after_cleanup; | |
630 | ||
631 | memset (&main_subfile, '\0', sizeof (main_subfile)); | |
632 | ||
633 | if (inclIndx == 0) | |
581e13c1 MS |
634 | /* All source lines were in the main source file. None in include |
635 | files. */ | |
c906108c | 636 | |
c5aa993b JM |
637 | enter_line_range (&main_subfile, offset, 0, start, end, |
638 | &main_source_baseline); | |
c906108c SS |
639 | |
640 | else | |
641 | { | |
642 | /* There was source with line numbers in include files. */ | |
7a78ae4e ND |
643 | |
644 | int linesz = | |
5c80ed9d | 645 | coff_data (this_symtab_objfile->obfd)->local_linesz; |
c906108c | 646 | main_source_baseline = 0; |
7a78ae4e | 647 | |
c5aa993b | 648 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c SS |
649 | { |
650 | struct subfile *tmpSubfile; | |
651 | ||
652 | /* If there is main file source before include file, enter it. */ | |
653 | if (offset < inclTable[ii].begin) | |
654 | { | |
655 | enter_line_range | |
7a78ae4e | 656 | (&main_subfile, offset, inclTable[ii].begin - linesz, |
c906108c SS |
657 | start, 0, &main_source_baseline); |
658 | } | |
659 | ||
46212e0b | 660 | if (strcmp (inclTable[ii].name, get_last_source_file ()) == 0) |
c5933f6d JB |
661 | { |
662 | /* The entry in the include table refers to the main source | |
581e13c1 | 663 | file. Add the lines to the main subfile. */ |
c5933f6d JB |
664 | |
665 | main_source_baseline = inclTable[ii].funStartLine; | |
666 | enter_line_range | |
667 | (&main_subfile, inclTable[ii].begin, inclTable[ii].end, | |
668 | start, 0, &main_source_baseline); | |
669 | inclTable[ii].subfile = &main_subfile; | |
670 | } | |
671 | else | |
672 | { | |
c5933f6d | 673 | /* Have a new subfile for the include file. */ |
c906108c | 674 | |
8d749320 | 675 | tmpSubfile = inclTable[ii].subfile = XNEW (struct subfile); |
c906108c | 676 | |
c5933f6d JB |
677 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
678 | firstLine = &(inclTable[ii].funStartLine); | |
679 | ||
680 | /* Enter include file's lines now. */ | |
681 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
682 | inclTable[ii].end, start, 0, firstLine); | |
683 | } | |
c906108c SS |
684 | |
685 | if (offset <= inclTable[ii].end) | |
7a78ae4e | 686 | offset = inclTable[ii].end + linesz; |
c906108c SS |
687 | } |
688 | ||
689 | /* All the include files' line have been processed at this point. Now, | |
c5aa993b | 690 | enter remaining lines of the main file, if any left. */ |
7a78ae4e | 691 | if (offset < max_offset + 1 - linesz) |
c906108c | 692 | { |
c5aa993b | 693 | enter_line_range (&main_subfile, offset, 0, start, end, |
c906108c SS |
694 | &main_source_baseline); |
695 | } | |
696 | } | |
697 | ||
698 | /* Process main file's line numbers. */ | |
699 | if (main_subfile.line_vector) | |
700 | { | |
701 | struct linetable *lineTb, *lv; | |
702 | ||
703 | lv = main_subfile.line_vector; | |
704 | ||
581e13c1 MS |
705 | /* Line numbers are not necessarily ordered. xlc compilation will |
706 | put static function to the end. */ | |
c906108c | 707 | |
3c65e5b3 | 708 | struct subfile *current_subfile = get_current_subfile (); |
c906108c SS |
709 | lineTb = arrange_linetable (lv); |
710 | if (lv == lineTb) | |
711 | { | |
712 | current_subfile->line_vector = (struct linetable *) | |
713 | xrealloc (lv, (sizeof (struct linetable) | |
714 | + lv->nitems * sizeof (struct linetable_entry))); | |
715 | } | |
716 | else | |
717 | { | |
b8c9b27d | 718 | xfree (lv); |
c906108c SS |
719 | current_subfile->line_vector = lineTb; |
720 | } | |
721 | ||
c5aa993b | 722 | current_subfile->line_vector_length = |
c906108c SS |
723 | current_subfile->line_vector->nitems; |
724 | } | |
725 | ||
726 | /* Now, process included files' line numbers. */ | |
727 | ||
c5aa993b | 728 | for (ii = 0; ii < inclIndx; ++ii) |
c906108c | 729 | { |
c5933f6d | 730 | if (inclTable[ii].subfile != ((struct subfile *) &main_subfile) |
3e43a32a MS |
731 | && (inclTable[ii].subfile)->line_vector) /* Useless if!!! |
732 | FIXMEmgo */ | |
c906108c SS |
733 | { |
734 | struct linetable *lineTb, *lv; | |
735 | ||
736 | lv = (inclTable[ii].subfile)->line_vector; | |
737 | ||
581e13c1 MS |
738 | /* Line numbers are not necessarily ordered. xlc compilation will |
739 | put static function to the end. */ | |
c906108c SS |
740 | |
741 | lineTb = arrange_linetable (lv); | |
742 | ||
743 | push_subfile (); | |
744 | ||
745 | /* For the same include file, we might want to have more than one | |
746 | subfile. This happens if we have something like: | |
747 | ||
c5aa993b JM |
748 | ...... |
749 | #include "foo.h" | |
750 | ...... | |
751 | #include "foo.h" | |
752 | ...... | |
c906108c | 753 | |
581e13c1 | 754 | while foo.h including code in it. (stupid but possible) |
c906108c SS |
755 | Since start_subfile() looks at the name and uses an |
756 | existing one if finds, we need to provide a fake name and | |
757 | fool it. */ | |
758 | ||
759 | #if 0 | |
4d663531 | 760 | start_subfile (inclTable[ii].name); |
c906108c SS |
761 | #else |
762 | { | |
763 | /* Pick a fake name that will produce the same results as this | |
764 | one when passed to deduce_language_from_filename. Kludge on | |
765 | top of kludge. */ | |
a121b7c1 | 766 | const char *fakename = strrchr (inclTable[ii].name, '.'); |
a109c7c1 | 767 | |
c906108c SS |
768 | if (fakename == NULL) |
769 | fakename = " ?"; | |
4d663531 | 770 | start_subfile (fakename); |
3c65e5b3 | 771 | xfree (get_current_subfile ()->name); |
c906108c | 772 | } |
3c65e5b3 | 773 | struct subfile *current_subfile = get_current_subfile (); |
c2d11a7d | 774 | current_subfile->name = xstrdup (inclTable[ii].name); |
c906108c SS |
775 | #endif |
776 | ||
777 | if (lv == lineTb) | |
778 | { | |
779 | current_subfile->line_vector = | |
780 | (struct linetable *) xrealloc | |
c5aa993b JM |
781 | (lv, (sizeof (struct linetable) |
782 | + lv->nitems * sizeof (struct linetable_entry))); | |
c906108c SS |
783 | |
784 | } | |
785 | else | |
786 | { | |
b8c9b27d | 787 | xfree (lv); |
c906108c SS |
788 | current_subfile->line_vector = lineTb; |
789 | } | |
790 | ||
c5aa993b | 791 | current_subfile->line_vector_length = |
c906108c | 792 | current_subfile->line_vector->nitems; |
4d663531 | 793 | start_subfile (pop_subfile ()); |
c906108c SS |
794 | } |
795 | } | |
796 | ||
c5aa993b | 797 | return_after_cleanup: |
c906108c SS |
798 | |
799 | /* We don't want to keep alloc/free'ing the global include file table. */ | |
800 | inclIndx = 0; | |
c906108c SS |
801 | } |
802 | ||
c295b2e5 | 803 | static void |
f56ce883 | 804 | aix_process_linenos (struct objfile *objfile) |
c906108c | 805 | { |
316a8b21 TG |
806 | /* There is no linenos to read if there are only dwarf info. */ |
807 | if (this_symtab_psymtab == NULL) | |
808 | return; | |
809 | ||
581e13c1 | 810 | /* Process line numbers and enter them into line vector. */ |
2c99ee5c | 811 | process_linenos (get_last_source_start_addr (), cur_src_end_addr); |
c906108c SS |
812 | } |
813 | ||
814 | ||
815 | /* Enter a given range of lines into the line vector. | |
816 | can be called in the following two ways: | |
3e43a32a MS |
817 | enter_line_range (subfile, beginoffset, endoffset, |
818 | startaddr, 0, firstLine) or | |
819 | enter_line_range (subfile, beginoffset, 0, | |
820 | startaddr, endaddr, firstLine) | |
c906108c SS |
821 | |
822 | endoffset points to the last line table entry that we should pay | |
823 | attention to. */ | |
824 | ||
825 | static void | |
3e43a32a MS |
826 | enter_line_range (struct subfile *subfile, unsigned beginoffset, |
827 | unsigned endoffset, /* offsets to line table */ | |
fba45db2 KB |
828 | CORE_ADDR startaddr, /* offsets to line table */ |
829 | CORE_ADDR endaddr, unsigned *firstLine) | |
c906108c | 830 | { |
5c80ed9d | 831 | struct objfile *objfile = this_symtab_objfile; |
08feed99 | 832 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
833 | unsigned int curoffset; |
834 | CORE_ADDR addr; | |
7a78ae4e | 835 | void *ext_lnno; |
c906108c SS |
836 | struct internal_lineno int_lnno; |
837 | unsigned int limit_offset; | |
838 | bfd *abfd; | |
7a78ae4e | 839 | int linesz; |
c906108c SS |
840 | |
841 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) | |
842 | return; | |
843 | curoffset = beginoffset; | |
b8b98ad1 | 844 | limit_offset = XCOFF_DATA (objfile)->max_lineno_offset; |
c906108c SS |
845 | |
846 | if (endoffset != 0) | |
847 | { | |
848 | if (endoffset >= limit_offset) | |
849 | { | |
b98664d3 | 850 | complaint (_("Bad line table offset in C_EINCL directive")); |
c906108c SS |
851 | return; |
852 | } | |
853 | limit_offset = endoffset; | |
854 | } | |
855 | else | |
856 | limit_offset -= 1; | |
7a78ae4e | 857 | |
fbf65064 | 858 | abfd = objfile->obfd; |
7a78ae4e ND |
859 | linesz = coff_data (abfd)->local_linesz; |
860 | ext_lnno = alloca (linesz); | |
c906108c SS |
861 | |
862 | while (curoffset <= limit_offset) | |
863 | { | |
864 | bfd_seek (abfd, curoffset, SEEK_SET); | |
3a42e9d0 | 865 | bfd_bread (ext_lnno, linesz, abfd); |
7a78ae4e | 866 | bfd_coff_swap_lineno_in (abfd, ext_lnno, &int_lnno); |
c906108c SS |
867 | |
868 | /* Find the address this line represents. */ | |
869 | addr = (int_lnno.l_lnno | |
870 | ? int_lnno.l_addr.l_paddr | |
871 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
b3b3bada | 872 | addr += objfile->text_section_offset (); |
c906108c SS |
873 | |
874 | if (addr < startaddr || (endaddr && addr >= endaddr)) | |
875 | return; | |
876 | ||
877 | if (int_lnno.l_lnno == 0) | |
878 | { | |
879 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
fbf65064 | 880 | record_line (subfile, 0, gdbarch_addr_bits_remove (gdbarch, addr)); |
c906108c SS |
881 | --(*firstLine); |
882 | } | |
883 | else | |
fbf65064 UW |
884 | record_line (subfile, *firstLine + int_lnno.l_lnno, |
885 | gdbarch_addr_bits_remove (gdbarch, addr)); | |
7a78ae4e | 886 | curoffset += linesz; |
c906108c SS |
887 | } |
888 | } | |
889 | ||
890 | ||
891 | /* Save the vital information for use when closing off the current file. | |
892 | NAME is the file name the symbols came from, START_ADDR is the first | |
893 | text address for the file, and SIZE is the number of bytes of text. */ | |
894 | ||
895 | #define complete_symtab(name, start_addr) { \ | |
46212e0b | 896 | set_last_source_file (name); \ |
2c99ee5c | 897 | set_last_source_start_addr (start_addr); \ |
c906108c SS |
898 | } |
899 | ||
900 | ||
901 | /* Refill the symbol table input buffer | |
902 | and set the variables that control fetching entries from it. | |
903 | Reports an error if no data available. | |
904 | This function can read past the end of the symbol table | |
905 | (into the string table) but this does no harm. */ | |
906 | ||
8dddcb8f | 907 | /* Create a new minimal symbol (using record_with_info). |
ec92004f | 908 | |
4d1eb6b4 | 909 | Creation of all new minimal symbols should go through this function |
8dddcb8f | 910 | rather than calling the various record functions in order |
4d1eb6b4 JB |
911 | to make sure that all symbol addresses get properly relocated. |
912 | ||
ec92004f JB |
913 | Arguments are: |
914 | ||
915 | NAME - the symbol's name (but if NAME starts with a period, that | |
916 | leading period is discarded). | |
4d1eb6b4 JB |
917 | ADDRESS - the symbol's address, prior to relocation. This function |
918 | relocates the address before recording the minimal symbol. | |
ec92004f JB |
919 | MS_TYPE - the symbol's type. |
920 | N_SCNUM - the symbol's XCOFF section number. | |
921 | OBJFILE - the objfile associated with the minimal symbol. */ | |
c906108c | 922 | |
ec92004f | 923 | static void |
8dddcb8f TT |
924 | record_minimal_symbol (minimal_symbol_reader &reader, |
925 | const char *name, CORE_ADDR address, | |
ec92004f JB |
926 | enum minimal_symbol_type ms_type, |
927 | int n_scnum, | |
928 | struct objfile *objfile) | |
929 | { | |
ec92004f JB |
930 | if (name[0] == '.') |
931 | ++name; | |
932 | ||
8dddcb8f TT |
933 | reader.record_with_info (name, address, ms_type, |
934 | secnum_to_section (n_scnum, objfile)); | |
ec92004f | 935 | } |
c906108c | 936 | |
581e13c1 MS |
937 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
938 | nested. At any given time, a symbol can only be in one static block. | |
939 | This is the base address of current static block, zero if non exists. */ | |
c5aa993b | 940 | |
c906108c SS |
941 | static int static_block_base = 0; |
942 | ||
943 | /* Section number for the current static block. */ | |
944 | ||
945 | static int static_block_section = -1; | |
946 | ||
581e13c1 | 947 | /* true if space for symbol name has been allocated. */ |
c906108c SS |
948 | |
949 | static int symname_alloced = 0; | |
950 | ||
951 | /* Next symbol to read. Pointer into raw seething symbol table. */ | |
952 | ||
953 | static char *raw_symbol; | |
954 | ||
955 | /* This is the function which stabsread.c calls to get symbol | |
956 | continuations. */ | |
957 | ||
a121b7c1 | 958 | static const char * |
fba45db2 | 959 | xcoff_next_symbol_text (struct objfile *objfile) |
c906108c SS |
960 | { |
961 | struct internal_syment symbol; | |
a121b7c1 | 962 | const char *retval; |
a109c7c1 | 963 | |
581e13c1 | 964 | /* FIXME: is this the same as the passed arg? */ |
5c80ed9d TT |
965 | if (this_symtab_objfile) |
966 | objfile = this_symtab_objfile; | |
c906108c SS |
967 | |
968 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); | |
969 | if (symbol.n_zeroes) | |
970 | { | |
b98664d3 | 971 | complaint (_("Unexpected symbol continuation")); |
c906108c SS |
972 | |
973 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 974 | code does something reasonable. */ |
c906108c SS |
975 | retval = ""; |
976 | } | |
977 | else if (symbol.n_sclass & 0x80) | |
978 | { | |
b8b98ad1 | 979 | retval = XCOFF_DATA (objfile)->debugsec + symbol.n_offset; |
3e43a32a | 980 | raw_symbol += coff_data (objfile->obfd)->local_symesz; |
c906108c SS |
981 | ++symnum; |
982 | } | |
983 | else | |
984 | { | |
b98664d3 | 985 | complaint (_("Unexpected symbol continuation")); |
c906108c SS |
986 | |
987 | /* Return something which points to '\0' and hope the symbol reading | |
c5aa993b | 988 | code does something reasonable. */ |
c906108c SS |
989 | retval = ""; |
990 | } | |
991 | return retval; | |
992 | } | |
993 | ||
994 | /* Read symbols for a given partial symbol table. */ | |
995 | ||
996 | static void | |
891813be | 997 | read_xcoff_symtab (struct objfile *objfile, legacy_psymtab *pst) |
c906108c | 998 | { |
c906108c | 999 | bfd *abfd = objfile->obfd; |
581e13c1 | 1000 | char *raw_auxptr; /* Pointer to first raw aux entry for sym. */ |
02dc647e | 1001 | struct xcoff_symfile_info *xcoff = XCOFF_DATA (objfile); |
b8b98ad1 TT |
1002 | char *strtbl = xcoff->strtbl; |
1003 | char *debugsec = xcoff->debugsec; | |
554d387d | 1004 | const char *debugfmt = bfd_xcoff_is_xcoff64 (abfd) ? "XCOFF64" : "XCOFF"; |
c906108c SS |
1005 | |
1006 | struct internal_syment symbol[1]; | |
1007 | union internal_auxent main_aux; | |
1008 | struct coff_symbol cs[1]; | |
1009 | CORE_ADDR file_start_addr = 0; | |
1010 | CORE_ADDR file_end_addr = 0; | |
1011 | ||
1012 | int next_file_symnum = -1; | |
1013 | unsigned int max_symnum; | |
1014 | int just_started = 1; | |
1015 | int depth = 0; | |
086850b2 | 1016 | CORE_ADDR fcn_start_addr = 0; |
b9718991 | 1017 | enum language pst_symtab_language; |
c906108c | 1018 | |
238ae9af | 1019 | struct coff_symbol fcn_stab_saved = { 0 }; |
c906108c | 1020 | |
581e13c1 | 1021 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
3672b1be | 1022 | union internal_auxent fcn_aux_saved = main_aux; |
fe978cb0 | 1023 | struct context_stack *newobj; |
c906108c | 1024 | |
9a1e3f00 | 1025 | const char *filestring = pst->filename; /* Name of the current file. */ |
c906108c | 1026 | |
40301fb7 | 1027 | const char *last_csect_name; /* Last seen csect's name. */ |
c906108c SS |
1028 | |
1029 | this_symtab_psymtab = pst; | |
5c80ed9d | 1030 | this_symtab_objfile = objfile; |
c906108c SS |
1031 | |
1032 | /* Get the appropriate COFF "constants" related to the file we're | |
581e13c1 | 1033 | handling. */ |
c906108c SS |
1034 | local_symesz = coff_data (abfd)->local_symesz; |
1035 | ||
46212e0b | 1036 | set_last_source_file (NULL); |
c906108c | 1037 | last_csect_name = 0; |
b9718991 | 1038 | pst_symtab_language = deduce_language_from_filename (filestring); |
c906108c SS |
1039 | |
1040 | start_stabs (); | |
cafb3438 | 1041 | start_symtab (objfile, filestring, NULL, file_start_addr, |
b9718991 | 1042 | pst_symtab_language); |
7a78ae4e | 1043 | record_debugformat (debugfmt); |
c5aa993b | 1044 | symnum = ((struct symloc *) pst->read_symtab_private)->first_symnum; |
c906108c | 1045 | max_symnum = |
c5aa993b | 1046 | symnum + ((struct symloc *) pst->read_symtab_private)->numsyms; |
c906108c SS |
1047 | first_object_file_end = 0; |
1048 | ||
b8b98ad1 | 1049 | raw_symbol = xcoff->symtbl + symnum * local_symesz; |
c906108c SS |
1050 | |
1051 | while (symnum < max_symnum) | |
1052 | { | |
c906108c SS |
1053 | QUIT; /* make this command interruptable. */ |
1054 | ||
1055 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ | |
581e13c1 | 1056 | /* read one symbol into `cs' structure. After processing the |
c5aa993b | 1057 | whole symbol table, only string table will be kept in memory, |
581e13c1 | 1058 | symbol table and debug section of xcoff will be freed. Thus |
c5aa993b | 1059 | we can mark symbols with names in string table as |
581e13c1 | 1060 | `alloced'. */ |
c906108c SS |
1061 | { |
1062 | int ii; | |
1063 | ||
1064 | /* Swap and align the symbol into a reasonable C structure. */ | |
1065 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1066 | ||
1067 | cs->c_symnum = symnum; | |
1068 | cs->c_naux = symbol->n_numaux; | |
1069 | if (symbol->n_zeroes) | |
1070 | { | |
1071 | symname_alloced = 0; | |
1072 | /* We must use the original, unswapped, name here so the name field | |
1073 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1074 | we use the new field, it gets overwritten for each symbol. */ | |
c5aa993b | 1075 | cs->c_name = ((struct external_syment *) raw_symbol)->e.e_name; |
c906108c SS |
1076 | /* If it's exactly E_SYMNMLEN characters long it isn't |
1077 | '\0'-terminated. */ | |
1078 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1079 | { | |
1080 | char *p; | |
a109c7c1 | 1081 | |
224c3ddb SM |
1082 | p = (char *) obstack_alloc (&objfile->objfile_obstack, |
1083 | E_SYMNMLEN + 1); | |
c906108c SS |
1084 | strncpy (p, cs->c_name, E_SYMNMLEN); |
1085 | p[E_SYMNMLEN] = '\0'; | |
1086 | cs->c_name = p; | |
1087 | symname_alloced = 1; | |
1088 | } | |
1089 | } | |
1090 | else if (symbol->n_sclass & 0x80) | |
1091 | { | |
1092 | cs->c_name = debugsec + symbol->n_offset; | |
1093 | symname_alloced = 0; | |
1094 | } | |
1095 | else | |
1096 | { | |
1097 | /* in string table */ | |
c5aa993b | 1098 | cs->c_name = strtbl + (int) symbol->n_offset; |
c906108c SS |
1099 | symname_alloced = 1; |
1100 | } | |
1101 | cs->c_value = symbol->n_value; | |
1102 | cs->c_sclass = symbol->n_sclass; | |
1103 | cs->c_secnum = symbol->n_scnum; | |
c5aa993b | 1104 | cs->c_type = (unsigned) symbol->n_type; |
c906108c | 1105 | |
7a78ae4e | 1106 | raw_symbol += local_symesz; |
c906108c SS |
1107 | ++symnum; |
1108 | ||
1109 | /* Save addr of first aux entry. */ | |
1110 | raw_auxptr = raw_symbol; | |
1111 | ||
1112 | /* Skip all the auxents associated with this symbol. */ | |
1113 | for (ii = symbol->n_numaux; ii; --ii) | |
1114 | { | |
1115 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1116 | ++symnum; | |
1117 | } | |
1118 | } | |
1119 | ||
581e13c1 | 1120 | /* if symbol name starts with ".$" or "$", ignore it. */ |
c906108c SS |
1121 | if (cs->c_name[0] == '$' |
1122 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1123 | continue; | |
1124 | ||
1125 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
1126 | { | |
46212e0b | 1127 | if (get_last_source_file ()) |
c906108c | 1128 | { |
43f3e411 DE |
1129 | pst->compunit_symtab = end_symtab (cur_src_end_addr, |
1130 | SECT_OFF_TEXT (objfile)); | |
c906108c SS |
1131 | end_stabs (); |
1132 | } | |
1133 | ||
1134 | start_stabs (); | |
cafb3438 TT |
1135 | start_symtab (objfile, "_globals_", NULL, |
1136 | 0, pst_symtab_language); | |
7a78ae4e | 1137 | record_debugformat (debugfmt); |
c906108c | 1138 | cur_src_end_addr = first_object_file_end; |
581e13c1 | 1139 | /* Done with all files, everything from here on is globals. */ |
c906108c SS |
1140 | } |
1141 | ||
55bcecda UW |
1142 | if (cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT || |
1143 | cs->c_sclass == C_WEAKEXT) | |
c906108c SS |
1144 | { |
1145 | /* Dealing with a symbol with a csect entry. */ | |
1146 | ||
1147 | #define CSECT(PP) ((PP)->x_csect) | |
1148 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1149 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1150 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1151 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
1152 | ||
55bcecda UW |
1153 | /* Convert the auxent to something we can access. |
1154 | XCOFF can have more than one auxiliary entries. | |
1155 | ||
1156 | Actual functions will have two auxiliary entries, one to have the | |
1157 | function size and other to have the smtype/smclass (LD/PR). | |
1158 | ||
1159 | c_type value of main symbol table will be set only in case of | |
1160 | C_EXT/C_HIDEEXT/C_WEAKEXT storage class symbols. | |
1161 | Bit 10 of type is set if symbol is a function, ie the value is set | |
85102364 | 1162 | to 32(0x20). So we need to read the first function auxiliary entry |
55bcecda UW |
1163 | which contains the size. */ |
1164 | if (cs->c_naux > 1 && ISFCN (cs->c_type)) | |
1165 | { | |
1166 | /* a function entry point. */ | |
1167 | ||
1168 | fcn_start_addr = cs->c_value; | |
1169 | ||
1170 | /* save the function header info, which will be used | |
1171 | when `.bf' is seen. */ | |
1172 | fcn_cs_saved = *cs; | |
1173 | ||
1174 | /* Convert the auxent to something we can access. */ | |
1175 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1176 | 0, cs->c_naux, &fcn_aux_saved); | |
1177 | continue; | |
1178 | } | |
1179 | /* Read the csect auxiliary header, which is always the last by | |
85102364 | 1180 | convention. */ |
55bcecda UW |
1181 | bfd_coff_swap_aux_in (abfd, |
1182 | raw_auxptr | |
1183 | + ((coff_data (abfd)->local_symesz) | |
1184 | * (cs->c_naux - 1)), | |
1185 | cs->c_type, cs->c_sclass, | |
1186 | cs->c_naux - 1, cs->c_naux, | |
1187 | &main_aux); | |
c906108c SS |
1188 | |
1189 | switch (CSECT_SMTYP (&main_aux)) | |
1190 | { | |
1191 | ||
1192 | case XTY_ER: | |
1193 | /* Ignore all external references. */ | |
1194 | continue; | |
1195 | ||
1196 | case XTY_SD: | |
1197 | /* A section description. */ | |
1198 | { | |
1199 | switch (CSECT_SCLAS (&main_aux)) | |
1200 | { | |
1201 | ||
1202 | case XMC_PR: | |
1203 | { | |
1204 | ||
1205 | /* A program csect is seen. We have to allocate one | |
c5aa993b JM |
1206 | symbol table for each program csect. Normally gdb |
1207 | prefers one symtab for each source file. In case | |
1208 | of AIX, one source file might include more than one | |
1209 | [PR] csect, and they don't have to be adjacent in | |
581e13c1 | 1210 | terms of the space they occupy in memory. Thus, one |
c5aa993b JM |
1211 | single source file might get fragmented in the |
1212 | memory and gdb's file start and end address | |
1213 | approach does not work! GCC (and I think xlc) seem | |
1214 | to put all the code in the unnamed program csect. */ | |
c906108c SS |
1215 | |
1216 | if (last_csect_name) | |
1217 | { | |
1218 | complete_symtab (filestring, file_start_addr); | |
1219 | cur_src_end_addr = file_end_addr; | |
43f3e411 | 1220 | end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1221 | end_stabs (); |
1222 | start_stabs (); | |
1223 | /* Give all csects for this source file the same | |
1224 | name. */ | |
4d663531 | 1225 | start_symtab (objfile, filestring, NULL, |
cafb3438 | 1226 | 0, pst_symtab_language); |
7a78ae4e | 1227 | record_debugformat (debugfmt); |
c906108c SS |
1228 | } |
1229 | ||
1230 | /* If this is the very first csect seen, | |
581e13c1 | 1231 | basically `__start'. */ |
c906108c SS |
1232 | if (just_started) |
1233 | { | |
1234 | first_object_file_end | |
1235 | = cs->c_value + CSECT_LEN (&main_aux); | |
1236 | just_started = 0; | |
1237 | } | |
1238 | ||
1239 | file_start_addr = | |
b3b3bada | 1240 | cs->c_value + objfile->text_section_offset (); |
c906108c SS |
1241 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); |
1242 | ||
40301fb7 JB |
1243 | if (cs->c_name && (cs->c_name[0] == '.' || cs->c_name[0] == '@')) |
1244 | last_csect_name = cs->c_name; | |
c906108c SS |
1245 | } |
1246 | continue; | |
1247 | ||
1248 | /* All other symbols are put into the minimal symbol | |
1249 | table only. */ | |
1250 | ||
1251 | case XMC_RW: | |
1252 | continue; | |
1253 | ||
1254 | case XMC_TC0: | |
1255 | continue; | |
1256 | ||
1257 | case XMC_TC: | |
1258 | continue; | |
1259 | ||
1260 | default: | |
1261 | /* Ignore the symbol. */ | |
1262 | continue; | |
1263 | } | |
1264 | } | |
1265 | break; | |
1266 | ||
1267 | case XTY_LD: | |
1268 | ||
1269 | switch (CSECT_SCLAS (&main_aux)) | |
1270 | { | |
55bcecda UW |
1271 | /* We never really come to this part as this case has been |
1272 | handled in ISFCN check above. | |
1273 | This and other cases of XTY_LD are kept just for | |
1274 | reference. */ | |
c906108c | 1275 | case XMC_PR: |
c906108c SS |
1276 | continue; |
1277 | ||
1278 | case XMC_GL: | |
581e13c1 | 1279 | /* shared library function trampoline code entry point. */ |
c906108c SS |
1280 | continue; |
1281 | ||
1282 | case XMC_DS: | |
1283 | /* The symbols often have the same names as debug symbols for | |
1284 | functions, and confuse lookup_symbol. */ | |
1285 | continue; | |
1286 | ||
1287 | default: | |
1288 | /* xlc puts each variable in a separate csect, so we get | |
1289 | an XTY_SD for each variable. But gcc puts several | |
1290 | variables in a csect, so that each variable only gets | |
581e13c1 | 1291 | an XTY_LD. This will typically be XMC_RW; I suspect |
c906108c SS |
1292 | XMC_RO and XMC_BS might be possible too. |
1293 | These variables are put in the minimal symbol table | |
1294 | only. */ | |
1295 | continue; | |
1296 | } | |
1297 | break; | |
1298 | ||
1299 | case XTY_CM: | |
1300 | /* Common symbols are put into the minimal symbol table only. */ | |
1301 | continue; | |
1302 | ||
1303 | default: | |
1304 | break; | |
1305 | } | |
1306 | } | |
1307 | ||
1308 | switch (cs->c_sclass) | |
1309 | { | |
c906108c SS |
1310 | case C_FILE: |
1311 | ||
1312 | /* c_value field contains symnum of next .file entry in table | |
581e13c1 | 1313 | or symnum of first global after last .file. */ |
c906108c SS |
1314 | |
1315 | next_file_symnum = cs->c_value; | |
1316 | ||
1317 | /* Complete symbol table for last object file containing | |
581e13c1 | 1318 | debugging information. */ |
c906108c SS |
1319 | |
1320 | /* Whether or not there was a csect in the previous file, we | |
1321 | have to call `end_stabs' and `start_stabs' to reset | |
1322 | type_vector, line_vector, etc. structures. */ | |
1323 | ||
1324 | complete_symtab (filestring, file_start_addr); | |
1325 | cur_src_end_addr = file_end_addr; | |
4d663531 | 1326 | end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1327 | end_stabs (); |
1328 | ||
3e43a32a MS |
1329 | /* XCOFF, according to the AIX 3.2 documentation, puts the |
1330 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
1331 | do things the standard COFF way and put it in the auxent. | |
1332 | We use the auxent if the symbol is ".file" and an auxent | |
1333 | exists, otherwise use the symbol itself. Simple | |
1334 | enough. */ | |
c906108c SS |
1335 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) |
1336 | { | |
1337 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1338 | 0, cs->c_naux, &main_aux); | |
1339 | filestring = coff_getfilename (&main_aux, objfile); | |
1340 | } | |
1341 | else | |
1342 | filestring = cs->c_name; | |
1343 | ||
1344 | start_stabs (); | |
cafb3438 | 1345 | start_symtab (objfile, filestring, NULL, 0, pst_symtab_language); |
7a78ae4e | 1346 | record_debugformat (debugfmt); |
c906108c SS |
1347 | last_csect_name = 0; |
1348 | ||
581e13c1 | 1349 | /* reset file start and end addresses. A compilation unit |
3e43a32a | 1350 | with no text (only data) should have zero file |
581e13c1 | 1351 | boundaries. */ |
c906108c SS |
1352 | file_start_addr = file_end_addr = 0; |
1353 | break; | |
1354 | ||
1355 | case C_FUN: | |
1356 | fcn_stab_saved = *cs; | |
1357 | break; | |
1358 | ||
1359 | case C_FCN: | |
7ecb6532 | 1360 | if (strcmp (cs->c_name, ".bf") == 0) |
c906108c | 1361 | { |
b3b3bada | 1362 | CORE_ADDR off = objfile->text_section_offset (); |
a109c7c1 | 1363 | |
c906108c SS |
1364 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1365 | 0, cs->c_naux, &main_aux); | |
1366 | ||
1367 | within_function = 1; | |
1368 | ||
fe978cb0 | 1369 | newobj = push_context (0, fcn_start_addr + off); |
c906108c | 1370 | |
fe978cb0 | 1371 | newobj->name = define_symbol |
c906108c SS |
1372 | (fcn_cs_saved.c_value + off, |
1373 | fcn_stab_saved.c_name, 0, 0, objfile); | |
fe978cb0 PA |
1374 | if (newobj->name != NULL) |
1375 | SYMBOL_SECTION (newobj->name) = SECT_OFF_TEXT (objfile); | |
c906108c | 1376 | } |
7ecb6532 | 1377 | else if (strcmp (cs->c_name, ".ef") == 0) |
c906108c | 1378 | { |
c906108c SS |
1379 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1380 | 0, cs->c_naux, &main_aux); | |
1381 | ||
1382 | /* The value of .ef is the address of epilogue code; | |
c5aa993b | 1383 | not useful for gdb. */ |
c906108c | 1384 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
c5aa993b | 1385 | contains number of lines to '}' */ |
c906108c | 1386 | |
edb0470b | 1387 | if (outermost_context_p ()) |
581e13c1 | 1388 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1389 | ef_complaint (cs->c_symnum); |
c906108c SS |
1390 | within_function = 0; |
1391 | break; | |
1392 | } | |
a60f3166 | 1393 | struct context_stack cstk = pop_context (); |
c906108c | 1394 | /* Stack must be empty now. */ |
a60f3166 | 1395 | if (!outermost_context_p ()) |
c906108c | 1396 | { |
23136709 | 1397 | ef_complaint (cs->c_symnum); |
c906108c SS |
1398 | within_function = 0; |
1399 | break; | |
1400 | } | |
1401 | ||
c233e9c6 | 1402 | finish_block (cstk.name, cstk.old_blocks, |
a60f3166 | 1403 | NULL, cstk.start_addr, |
c906108c SS |
1404 | (fcn_cs_saved.c_value |
1405 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
b3b3bada | 1406 | + objfile->text_section_offset ())); |
c906108c SS |
1407 | within_function = 0; |
1408 | } | |
1409 | break; | |
1410 | ||
1411 | case C_BSTAT: | |
1412 | /* Begin static block. */ | |
1413 | { | |
b926417a | 1414 | struct internal_syment static_symbol; |
c906108c | 1415 | |
b926417a TT |
1416 | read_symbol (&static_symbol, cs->c_value); |
1417 | static_block_base = static_symbol.n_value; | |
c906108c | 1418 | static_block_section = |
b926417a | 1419 | secnum_to_section (static_symbol.n_scnum, objfile); |
c906108c SS |
1420 | } |
1421 | break; | |
1422 | ||
1423 | case C_ESTAT: | |
1424 | /* End of static block. */ | |
1425 | static_block_base = 0; | |
1426 | static_block_section = -1; | |
1427 | break; | |
1428 | ||
1429 | case C_ARG: | |
1430 | case C_REGPARM: | |
1431 | case C_REG: | |
1432 | case C_TPDEF: | |
1433 | case C_STRTAG: | |
1434 | case C_UNTAG: | |
1435 | case C_ENTAG: | |
1436 | { | |
b98664d3 | 1437 | complaint (_("Unrecognized storage class %d."), |
23136709 | 1438 | cs->c_sclass); |
c906108c SS |
1439 | } |
1440 | break; | |
1441 | ||
1442 | case C_LABEL: | |
1443 | case C_NULL: | |
1444 | /* Ignore these. */ | |
1445 | break; | |
1446 | ||
1447 | case C_HIDEXT: | |
1448 | case C_STAT: | |
1449 | break; | |
1450 | ||
1451 | case C_BINCL: | |
1452 | /* beginning of include file */ | |
1453 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
581e13c1 MS |
1454 | order. Thus, when wee see them, we might not know enough info |
1455 | to process them. Thus, we'll be saving them into a table | |
1456 | (inclTable) and postpone their processing. */ | |
c906108c SS |
1457 | |
1458 | record_include_begin (cs); | |
1459 | break; | |
1460 | ||
1461 | case C_EINCL: | |
1462 | /* End of include file. */ | |
1463 | /* See the comment after case C_BINCL. */ | |
1464 | record_include_end (cs); | |
1465 | break; | |
1466 | ||
1467 | case C_BLOCK: | |
7ecb6532 | 1468 | if (strcmp (cs->c_name, ".bb") == 0) |
c906108c SS |
1469 | { |
1470 | depth++; | |
fe978cb0 | 1471 | newobj = push_context (depth, |
c906108c | 1472 | (cs->c_value |
b3b3bada | 1473 | + objfile->text_section_offset ())); |
c906108c | 1474 | } |
7ecb6532 | 1475 | else if (strcmp (cs->c_name, ".eb") == 0) |
c906108c | 1476 | { |
edb0470b | 1477 | if (outermost_context_p ()) |
581e13c1 | 1478 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1479 | eb_complaint (cs->c_symnum); |
c906108c SS |
1480 | break; |
1481 | } | |
a60f3166 TT |
1482 | struct context_stack cstk = pop_context (); |
1483 | if (depth-- != cstk.depth) | |
c906108c | 1484 | { |
23136709 | 1485 | eb_complaint (cs->c_symnum); |
c906108c SS |
1486 | break; |
1487 | } | |
e148f09d | 1488 | if (*get_local_symbols () && !outermost_context_p ()) |
c906108c SS |
1489 | { |
1490 | /* Make a block for the local symbols within. */ | |
c233e9c6 | 1491 | finish_block (cstk.name, |
a60f3166 TT |
1492 | cstk.old_blocks, NULL, |
1493 | cstk.start_addr, | |
c906108c | 1494 | (cs->c_value |
b3b3bada | 1495 | + objfile->text_section_offset ())); |
c906108c | 1496 | } |
e148f09d | 1497 | *get_local_symbols () = cstk.locals; |
c906108c SS |
1498 | } |
1499 | break; | |
1500 | ||
1501 | default: | |
1502 | process_xcoff_symbol (cs, objfile); | |
1503 | break; | |
1504 | } | |
1505 | } | |
1506 | ||
46212e0b | 1507 | if (get_last_source_file ()) |
c906108c | 1508 | { |
43f3e411 | 1509 | struct compunit_symtab *cust; |
c906108c SS |
1510 | |
1511 | complete_symtab (filestring, file_start_addr); | |
1512 | cur_src_end_addr = file_end_addr; | |
43f3e411 | 1513 | cust = end_symtab (file_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c | 1514 | /* When reading symbols for the last C_FILE of the objfile, try |
43f3e411 | 1515 | to make sure that we set pst->compunit_symtab to the symtab for the |
c906108c SS |
1516 | file, not to the _globals_ symtab. I'm not sure whether this |
1517 | actually works right or when/if it comes up. */ | |
43f3e411 DE |
1518 | if (pst->compunit_symtab == NULL) |
1519 | pst->compunit_symtab = cust; | |
c906108c SS |
1520 | end_stabs (); |
1521 | } | |
1522 | } | |
1523 | ||
1524 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
468c0cbb | 1525 | (SYMBOL2) = new (&objfile->objfile_obstack) symbol (); \ |
c906108c | 1526 | *(SYMBOL2) = *(SYMBOL1); |
c5aa993b JM |
1527 | |
1528 | ||
c906108c | 1529 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ |
021887d8 TT |
1530 | ((ALLOCED) ? (NAME) : obstack_strdup (&objfile->objfile_obstack, \ |
1531 | (NAME))) | |
c906108c SS |
1532 | |
1533 | ||
581e13c1 | 1534 | /* process one xcoff symbol. */ |
c906108c SS |
1535 | |
1536 | static struct symbol * | |
aa1ee363 | 1537 | process_xcoff_symbol (struct coff_symbol *cs, struct objfile *objfile) |
c906108c SS |
1538 | { |
1539 | struct symbol onesymbol; | |
52f0bd74 | 1540 | struct symbol *sym = &onesymbol; |
c906108c SS |
1541 | struct symbol *sym2 = NULL; |
1542 | char *name, *pp; | |
1543 | ||
1544 | int sec; | |
1545 | CORE_ADDR off; | |
1546 | ||
1547 | if (cs->c_secnum < 0) | |
1548 | { | |
1549 | /* The value is a register number, offset within a frame, etc., | |
c5aa993b | 1550 | and does not get relocated. */ |
c906108c SS |
1551 | off = 0; |
1552 | sec = -1; | |
1553 | } | |
1554 | else | |
1555 | { | |
1556 | sec = secnum_to_section (cs->c_secnum, objfile); | |
6a053cb1 | 1557 | off = objfile->section_offsets[sec]; |
c906108c SS |
1558 | } |
1559 | ||
1560 | name = cs->c_name; | |
1561 | if (name[0] == '.') | |
1562 | ++name; | |
1563 | ||
38bf1463 | 1564 | initialize_objfile_symbol (sym); |
c906108c SS |
1565 | |
1566 | /* default assumptions */ | |
38583298 | 1567 | SET_SYMBOL_VALUE_ADDRESS (sym, cs->c_value + off); |
176620f1 | 1568 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1569 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); |
1570 | ||
1571 | if (ISFCN (cs->c_type)) | |
1572 | { | |
1573 | /* At this point, we don't know the type of the function. This | |
c5aa993b JM |
1574 | will be patched with the type from its stab entry later on in |
1575 | patch_block_stabs (), unless the file was compiled without -g. */ | |
c906108c | 1576 | |
43678b0a | 1577 | sym->set_linkage_name (SYMNAME_ALLOC (name, symname_alloced)); |
46bf5051 | 1578 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_text_symbol; |
c906108c | 1579 | |
f1e6e072 | 1580 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1581 | SYMBOL_DUP (sym, sym2); |
1582 | ||
55bcecda | 1583 | if (cs->c_sclass == C_EXT || C_WEAKEXT) |
e148f09d | 1584 | add_symbol_to_list (sym2, get_global_symbols ()); |
c906108c | 1585 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) |
e148f09d | 1586 | add_symbol_to_list (sym2, get_file_symbols ()); |
c906108c SS |
1587 | } |
1588 | else | |
1589 | { | |
581e13c1 | 1590 | /* In case we can't figure out the type, provide default. */ |
46bf5051 | 1591 | SYMBOL_TYPE (sym) = objfile_type (objfile)->nodebug_data_symbol; |
c906108c SS |
1592 | |
1593 | switch (cs->c_sclass) | |
1594 | { | |
1595 | #if 0 | |
c5aa993b JM |
1596 | /* The values of functions and global symbols are now resolved |
1597 | via the global_sym_chain in stabsread.c. */ | |
c906108c SS |
1598 | case C_FUN: |
1599 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1600 | add_stab_to_list (name, &global_stabs); | |
1601 | else | |
1602 | add_stab_to_list (name, &file_stabs); | |
1603 | break; | |
1604 | ||
1605 | case C_GSYM: | |
1606 | add_stab_to_list (name, &global_stabs); | |
1607 | break; | |
1608 | #endif | |
1609 | ||
1610 | case C_BCOMM: | |
1611 | common_block_start (cs->c_name, objfile); | |
1612 | break; | |
1613 | ||
1614 | case C_ECOMM: | |
1615 | common_block_end (objfile); | |
1616 | break; | |
1617 | ||
1618 | default: | |
b98664d3 | 1619 | complaint (_("Unexpected storage class: %d"), |
23136709 | 1620 | cs->c_sclass); |
c906108c SS |
1621 | /* FALLTHROUGH */ |
1622 | ||
1623 | case C_DECL: | |
1624 | case C_PSYM: | |
1625 | case C_RPSYM: | |
1626 | case C_ECOML: | |
1627 | case C_LSYM: | |
1628 | case C_RSYM: | |
1629 | case C_GSYM: | |
1630 | ||
1631 | { | |
1632 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1633 | if (sym != NULL) | |
1634 | { | |
1635 | SYMBOL_SECTION (sym) = sec; | |
1636 | } | |
1637 | return sym; | |
1638 | } | |
1639 | ||
1640 | case C_STSYM: | |
1641 | ||
1642 | /* For xlc (not GCC), the 'V' symbol descriptor is used for | |
1643 | all statics and we need to distinguish file-scope versus | |
1644 | function-scope using within_function. We do this by | |
1645 | changing the string we pass to define_symbol to use 'S' | |
1646 | where we need to, which is not necessarily super-clean, | |
1647 | but seems workable enough. */ | |
1648 | ||
9b13a2db PM |
1649 | if (*name == ':') |
1650 | return NULL; | |
1651 | ||
ed4b0e6a | 1652 | pp = strchr (name, ':'); |
9b13a2db | 1653 | if (pp == NULL) |
c906108c SS |
1654 | return NULL; |
1655 | ||
1656 | ++pp; | |
1657 | if (*pp == 'V' && !within_function) | |
1658 | *pp = 'S'; | |
1659 | sym = define_symbol ((cs->c_value | |
6a053cb1 | 1660 | + objfile->section_offsets[static_block_section]), |
c906108c SS |
1661 | cs->c_name, 0, 0, objfile); |
1662 | if (sym != NULL) | |
1663 | { | |
38583298 TT |
1664 | SET_SYMBOL_VALUE_ADDRESS (sym, |
1665 | SYMBOL_VALUE_ADDRESS (sym) | |
1666 | + static_block_base); | |
c906108c SS |
1667 | SYMBOL_SECTION (sym) = static_block_section; |
1668 | } | |
1669 | return sym; | |
1670 | ||
1671 | } | |
1672 | } | |
1673 | return sym2; | |
1674 | } | |
1675 | ||
1676 | /* Extract the file name from the aux entry of a C_FILE symbol. | |
1677 | Result is in static storage and is only good for temporary use. */ | |
1678 | ||
1679 | static char * | |
fba45db2 | 1680 | coff_getfilename (union internal_auxent *aux_entry, struct objfile *objfile) |
c906108c SS |
1681 | { |
1682 | static char buffer[BUFSIZ]; | |
1683 | ||
1684 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
b8b98ad1 TT |
1685 | strcpy (buffer, (XCOFF_DATA (objfile)->strtbl |
1686 | + aux_entry->x_file.x_n.x_offset)); | |
c906108c SS |
1687 | else |
1688 | { | |
1689 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1690 | buffer[FILNMLEN] = '\0'; | |
1691 | } | |
1692 | return (buffer); | |
1693 | } | |
1694 | ||
1695 | /* Set *SYMBOL to symbol number symno in symtbl. */ | |
1696 | static void | |
fba45db2 | 1697 | read_symbol (struct internal_syment *symbol, int symno) |
c906108c | 1698 | { |
02dc647e | 1699 | struct xcoff_symfile_info *xcoff = XCOFF_DATA (this_symtab_objfile); |
b8b98ad1 TT |
1700 | int nsyms = xcoff->symtbl_num_syms; |
1701 | char *stbl = xcoff->symtbl; | |
a109c7c1 | 1702 | |
c906108c SS |
1703 | if (symno < 0 || symno >= nsyms) |
1704 | { | |
b98664d3 | 1705 | complaint (_("Invalid symbol offset")); |
c906108c SS |
1706 | symbol->n_value = 0; |
1707 | symbol->n_scnum = -1; | |
1708 | return; | |
1709 | } | |
5c80ed9d | 1710 | bfd_coff_swap_sym_in (this_symtab_objfile->obfd, |
c5aa993b | 1711 | stbl + (symno * local_symesz), |
c906108c SS |
1712 | symbol); |
1713 | } | |
c5aa993b | 1714 | |
c906108c SS |
1715 | /* Get value corresponding to symbol number symno in symtbl. */ |
1716 | ||
470d5666 | 1717 | static CORE_ADDR |
fba45db2 | 1718 | read_symbol_nvalue (int symno) |
c906108c SS |
1719 | { |
1720 | struct internal_syment symbol[1]; | |
1721 | ||
1722 | read_symbol (symbol, symno); | |
c5aa993b | 1723 | return symbol->n_value; |
c906108c SS |
1724 | } |
1725 | ||
1726 | ||
1727 | /* Find the address of the function corresponding to symno, where | |
1728 | symno is the symbol pointed to by the linetable. */ | |
1729 | ||
1730 | static int | |
fba45db2 | 1731 | read_symbol_lineno (int symno) |
c906108c | 1732 | { |
5c80ed9d | 1733 | struct objfile *objfile = this_symtab_objfile; |
7af35dad | 1734 | int xcoff64 = bfd_xcoff_is_xcoff64 (objfile->obfd); |
7a78ae4e | 1735 | |
02dc647e | 1736 | struct xcoff_symfile_info *info = XCOFF_DATA (objfile); |
7a78ae4e ND |
1737 | int nsyms = info->symtbl_num_syms; |
1738 | char *stbl = info->symtbl; | |
1739 | char *strtbl = info->strtbl; | |
1740 | ||
c906108c SS |
1741 | struct internal_syment symbol[1]; |
1742 | union internal_auxent main_aux[1]; | |
1743 | ||
1744 | if (symno < 0) | |
1745 | { | |
23136709 | 1746 | bf_notfound_complaint (); |
c906108c SS |
1747 | return 0; |
1748 | } | |
1749 | ||
1750 | /* Note that just searching for a short distance (e.g. 50 symbols) | |
1751 | is not enough, at least in the following case. | |
1752 | ||
1753 | .extern foo | |
1754 | [many .stabx entries] | |
1755 | [a few functions, referring to foo] | |
1756 | .globl foo | |
1757 | .bf | |
1758 | ||
1759 | What happens here is that the assembler moves the .stabx entries | |
1760 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1761 | all the stabx entries. See PR gdb/2222. */ | |
1762 | ||
1763 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1764 | If I understand things correctly it would need to be done only for | |
1765 | the duration of a single psymtab to symtab conversion. */ | |
1766 | while (symno < nsyms) | |
1767 | { | |
1768 | bfd_coff_swap_sym_in (symfile_bfd, | |
1769 | stbl + (symno * local_symesz), symbol); | |
7a78ae4e ND |
1770 | if (symbol->n_sclass == C_FCN) |
1771 | { | |
1772 | char *name = xcoff64 ? strtbl + symbol->n_offset : symbol->n_name; | |
a109c7c1 | 1773 | |
7ecb6532 | 1774 | if (strcmp (name, ".bf") == 0) |
7a78ae4e ND |
1775 | goto gotit; |
1776 | } | |
c906108c SS |
1777 | symno += symbol->n_numaux + 1; |
1778 | } | |
1779 | ||
23136709 | 1780 | bf_notfound_complaint (); |
c906108c SS |
1781 | return 0; |
1782 | ||
1783 | gotit: | |
581e13c1 | 1784 | /* Take aux entry and return its lineno. */ |
c906108c | 1785 | symno++; |
7a78ae4e | 1786 | bfd_coff_swap_aux_in (objfile->obfd, stbl + symno * local_symesz, |
c906108c SS |
1787 | symbol->n_type, symbol->n_sclass, |
1788 | 0, symbol->n_numaux, main_aux); | |
1789 | ||
1790 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1791 | } | |
1792 | ||
581e13c1 | 1793 | /* Support for line number handling. */ |
c906108c SS |
1794 | |
1795 | /* This function is called for every section; it finds the outer limits | |
1796 | * of the line table (minimum and maximum file offset) so that the | |
1797 | * mainline code can read the whole thing for efficiency. | |
1798 | */ | |
1799 | static void | |
7be0c536 | 1800 | find_linenos (struct bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c | 1801 | { |
02dc647e | 1802 | struct xcoff_symfile_info *info; |
c906108c SS |
1803 | int size, count; |
1804 | file_ptr offset, maxoff; | |
1805 | ||
1806 | count = asect->lineno_count; | |
1807 | ||
7ecb6532 | 1808 | if (strcmp (asect->name, ".text") != 0 || count == 0) |
c906108c SS |
1809 | return; |
1810 | ||
1811 | size = count * coff_data (abfd)->local_linesz; | |
02dc647e | 1812 | info = (struct xcoff_symfile_info *) vpinfo; |
c906108c SS |
1813 | offset = asect->line_filepos; |
1814 | maxoff = offset + size; | |
1815 | ||
1816 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1817 | info->min_lineno_offset = offset; | |
1818 | ||
1819 | if (maxoff > info->max_lineno_offset) | |
1820 | info->max_lineno_offset = maxoff; | |
1821 | } | |
1822 | \f | |
c906108c | 1823 | static void |
69b037c3 | 1824 | xcoff_expand_psymtab (legacy_psymtab *pst, struct objfile *objfile) |
c906108c | 1825 | { |
0494dbec | 1826 | gdb_assert (!pst->readin); |
c906108c | 1827 | |
581e13c1 | 1828 | /* Read in all partial symtabs on which this one is dependent. */ |
48993951 | 1829 | pst->expand_dependencies (objfile); |
c906108c | 1830 | |
c5aa993b | 1831 | if (((struct symloc *) pst->read_symtab_private)->numsyms != 0) |
c906108c SS |
1832 | { |
1833 | /* Init stuff necessary for reading in symbols. */ | |
1834 | stabsread_init (); | |
c906108c | 1835 | |
33c7c59d | 1836 | scoped_free_pendings free_pending; |
5c80ed9d | 1837 | read_xcoff_symtab (objfile, pst); |
c906108c SS |
1838 | } |
1839 | ||
6d94535f | 1840 | pst->readin = true; |
c906108c SS |
1841 | } |
1842 | ||
c906108c | 1843 | /* Read in all of the symbols for a given psymtab for real. |
257e7a09 | 1844 | Be verbose about it if the user wants that. SELF is not NULL. */ |
c906108c SS |
1845 | |
1846 | static void | |
891813be | 1847 | xcoff_read_symtab (legacy_psymtab *self, struct objfile *objfile) |
c906108c | 1848 | { |
077cbab2 | 1849 | gdb_assert (!self->readin); |
c906108c | 1850 | |
257e7a09 YQ |
1851 | if (((struct symloc *) self->read_symtab_private)->numsyms != 0 |
1852 | || self->number_of_dependencies) | |
c906108c | 1853 | { |
c906108c SS |
1854 | next_symbol_text_func = xcoff_next_symbol_text; |
1855 | ||
8566b89b | 1856 | self->expand_psymtab (objfile); |
c906108c SS |
1857 | |
1858 | /* Match with global symbols. This only needs to be done once, | |
1859 | after all of the symtabs and dependencies have been read in. */ | |
5c80ed9d | 1860 | scan_file_globals (objfile); |
c906108c SS |
1861 | } |
1862 | } | |
1863 | \f | |
1864 | static void | |
fba45db2 | 1865 | xcoff_new_init (struct objfile *objfile) |
c906108c SS |
1866 | { |
1867 | stabsread_new_init (); | |
c906108c SS |
1868 | } |
1869 | ||
1870 | /* Do initialization in preparation for reading symbols from OBJFILE. | |
c5aa993b | 1871 | |
c906108c SS |
1872 | We will only be called if this is an XCOFF or XCOFF-like file. |
1873 | BFD handles figuring out the format of the file, and code in symfile.c | |
1874 | uses BFD's determination to vector to us. */ | |
1875 | ||
1876 | static void | |
fba45db2 | 1877 | xcoff_symfile_init (struct objfile *objfile) |
c906108c | 1878 | { |
581e13c1 | 1879 | /* Allocate struct to keep track of the symfile. */ |
02dc647e | 1880 | xcoff_objfile_data_key.emplace (objfile); |
c906108c SS |
1881 | |
1882 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1883 | find this causes a significant slowdown in gdb then we could | |
1884 | set it in the debug symbol readers only when necessary. */ | |
1885 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
1886 | } |
1887 | ||
1888 | /* Perform any local cleanups required when we are done with a particular | |
1889 | objfile. I.E, we are in the process of discarding all symbol information | |
1890 | for an objfile, freeing up all memory held for it, and unlinking the | |
581e13c1 | 1891 | objfile struct from the global list of known objfiles. */ |
c906108c SS |
1892 | |
1893 | static void | |
fba45db2 | 1894 | xcoff_symfile_finish (struct objfile *objfile) |
c906108c | 1895 | { |
c906108c SS |
1896 | /* Start with a fresh include table for the next objfile. */ |
1897 | if (inclTable) | |
1898 | { | |
b8c9b27d | 1899 | xfree (inclTable); |
c906108c SS |
1900 | inclTable = NULL; |
1901 | } | |
1902 | inclIndx = inclLength = inclDepth = 0; | |
1903 | } | |
1904 | ||
1905 | ||
1906 | static void | |
fba45db2 | 1907 | init_stringtab (bfd *abfd, file_ptr offset, struct objfile *objfile) |
c906108c SS |
1908 | { |
1909 | long length; | |
1910 | int val; | |
1911 | unsigned char lengthbuf[4]; | |
1912 | char *strtbl; | |
02dc647e | 1913 | struct xcoff_symfile_info *xcoff = XCOFF_DATA (objfile); |
c906108c | 1914 | |
b8b98ad1 | 1915 | xcoff->strtbl = NULL; |
c906108c SS |
1916 | |
1917 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) | |
8a3fe4f8 | 1918 | error (_("cannot seek to string table in %s: %s"), |
c906108c SS |
1919 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1920 | ||
3a42e9d0 | 1921 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c SS |
1922 | length = bfd_h_get_32 (abfd, lengthbuf); |
1923 | ||
1924 | /* If no string table is needed, then the file may end immediately | |
1925 | after the symbols. Just return with `strtbl' set to NULL. */ | |
1926 | ||
1927 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) | |
1928 | return; | |
1929 | ||
581e13c1 MS |
1930 | /* Allocate string table from objfile_obstack. We will need this table |
1931 | as long as we have its symbol table around. */ | |
c906108c | 1932 | |
4a146b47 | 1933 | strtbl = (char *) obstack_alloc (&objfile->objfile_obstack, length); |
b8b98ad1 | 1934 | xcoff->strtbl = strtbl; |
c906108c SS |
1935 | |
1936 | /* Copy length buffer, the first byte is usually zero and is | |
1937 | used for stabs with a name length of zero. */ | |
1938 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
1939 | if (length == sizeof lengthbuf) | |
1940 | return; | |
1941 | ||
3a42e9d0 | 1942 | val = bfd_bread (strtbl + sizeof lengthbuf, length - sizeof lengthbuf, abfd); |
c906108c SS |
1943 | |
1944 | if (val != length - sizeof lengthbuf) | |
8a3fe4f8 | 1945 | error (_("cannot read string table from %s: %s"), |
c906108c SS |
1946 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); |
1947 | if (strtbl[length - 1] != '\0') | |
3e43a32a MS |
1948 | error (_("bad symbol file: string table " |
1949 | "does not end with null character")); | |
c906108c SS |
1950 | |
1951 | return; | |
1952 | } | |
1953 | \f | |
1954 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
1955 | have seen one, it is the offset in the line numbers of the line numbers | |
1956 | for the psymtab. */ | |
1957 | static unsigned int first_fun_line_offset; | |
1958 | ||
c906108c SS |
1959 | /* Allocate and partially fill a partial symtab. It will be |
1960 | completely filled at the end of the symbol list. | |
1961 | ||
1962 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1963 | is the address relative to which its symbols are (incremental) or 0 | |
581e13c1 | 1964 | (normal). */ |
c906108c | 1965 | |
891813be | 1966 | static legacy_psymtab * |
0d5cff50 | 1967 | xcoff_start_psymtab (struct objfile *objfile, |
939652a5 | 1968 | const char *filename, int first_symnum) |
c906108c | 1969 | { |
c3693a1d | 1970 | /* We fill in textlow later. */ |
891813be | 1971 | legacy_psymtab *result = new legacy_psymtab (filename, objfile, 0); |
c906108c | 1972 | |
8d749320 SM |
1973 | result->read_symtab_private = |
1974 | XOBNEW (&objfile->objfile_obstack, struct symloc); | |
c5aa993b | 1975 | ((struct symloc *) result->read_symtab_private)->first_symnum = first_symnum; |
891813be | 1976 | result->legacy_read_symtab = xcoff_read_symtab; |
69b037c3 | 1977 | result->legacy_expand_psymtab = xcoff_expand_psymtab; |
c906108c | 1978 | |
581e13c1 | 1979 | /* Deduce the source language from the filename for this psymtab. */ |
c906108c SS |
1980 | psymtab_language = deduce_language_from_filename (filename); |
1981 | ||
1982 | return result; | |
1983 | } | |
1984 | ||
581e13c1 | 1985 | /* Close off the current usage of PST. |
c906108c SS |
1986 | Returns PST, or NULL if the partial symtab was empty and thrown away. |
1987 | ||
1988 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). | |
1989 | ||
1990 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES | |
1991 | are the information for includes and dependencies. */ | |
1992 | ||
891813be TT |
1993 | static legacy_psymtab * |
1994 | xcoff_end_psymtab (struct objfile *objfile, legacy_psymtab *pst, | |
5c80ed9d TT |
1995 | const char **include_list, int num_includes, |
1996 | int capping_symbol_number, | |
891813be | 1997 | legacy_psymtab **dependency_list, |
fba45db2 | 1998 | int number_dependencies, int textlow_not_set) |
c906108c SS |
1999 | { |
2000 | int i; | |
c906108c SS |
2001 | |
2002 | if (capping_symbol_number != -1) | |
c5aa993b | 2003 | ((struct symloc *) pst->read_symtab_private)->numsyms = |
c906108c | 2004 | capping_symbol_number |
c5aa993b JM |
2005 | - ((struct symloc *) pst->read_symtab_private)->first_symnum; |
2006 | ((struct symloc *) pst->read_symtab_private)->lineno_off = | |
c906108c SS |
2007 | first_fun_line_offset; |
2008 | first_fun_line_offset = 0; | |
8763cede DE |
2009 | |
2010 | end_psymtab_common (objfile, pst); | |
c906108c SS |
2011 | |
2012 | pst->number_of_dependencies = number_dependencies; | |
2013 | if (number_dependencies) | |
2014 | { | |
a9342b62 TT |
2015 | pst->dependencies |
2016 | = objfile->partial_symtabs->allocate_dependencies (number_dependencies); | |
c906108c | 2017 | memcpy (pst->dependencies, dependency_list, |
891813be | 2018 | number_dependencies * sizeof (legacy_psymtab *)); |
c906108c SS |
2019 | } |
2020 | else | |
2021 | pst->dependencies = 0; | |
2022 | ||
2023 | for (i = 0; i < num_includes; i++) | |
2024 | { | |
891813be TT |
2025 | legacy_psymtab *subpst = |
2026 | new legacy_psymtab (include_list[i], objfile); | |
c906108c | 2027 | |
e39db4db | 2028 | subpst->read_symtab_private = XOBNEW (&objfile->objfile_obstack, symloc); |
c5aa993b JM |
2029 | ((struct symloc *) subpst->read_symtab_private)->first_symnum = 0; |
2030 | ((struct symloc *) subpst->read_symtab_private)->numsyms = 0; | |
c906108c SS |
2031 | |
2032 | /* We could save slight bits of space by only making one of these, | |
c5aa993b | 2033 | shared by the entire set of include files. FIXME-someday. */ |
8d749320 | 2034 | subpst->dependencies = |
a9342b62 | 2035 | objfile->partial_symtabs->allocate_dependencies (1); |
c906108c SS |
2036 | subpst->dependencies[0] = pst; |
2037 | subpst->number_of_dependencies = 1; | |
2038 | ||
891813be | 2039 | subpst->legacy_read_symtab = pst->legacy_read_symtab; |
8566b89b | 2040 | subpst->legacy_expand_psymtab = pst->legacy_expand_psymtab; |
c906108c SS |
2041 | } |
2042 | ||
c906108c SS |
2043 | if (num_includes == 0 |
2044 | && number_dependencies == 0 | |
2045 | && pst->n_global_syms == 0 | |
2046 | && pst->n_static_syms == 0) | |
2047 | { | |
2048 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
c5aa993b | 2049 | it is on the obstack, but we can forget to chain it on the list. */ |
c906108c | 2050 | /* Empty psymtabs happen as a result of header files which don't have |
c5aa993b | 2051 | any symbols in them. There can be a lot of them. */ |
c906108c | 2052 | |
3ad83046 | 2053 | objfile->partial_symtabs->discard_psymtab (pst); |
c906108c SS |
2054 | |
2055 | /* Indicate that psymtab was thrown away. */ | |
be903358 | 2056 | pst = NULL; |
c906108c SS |
2057 | } |
2058 | return pst; | |
2059 | } | |
2060 | ||
c906108c SS |
2061 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in |
2062 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2063 | the symbol and its auxents. */ | |
2064 | ||
2065 | static void | |
fba45db2 | 2066 | swap_sym (struct internal_syment *symbol, union internal_auxent *aux, |
0d5cff50 | 2067 | const char **name, char **raw, unsigned int *symnump, |
fba45db2 | 2068 | struct objfile *objfile) |
c906108c SS |
2069 | { |
2070 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2071 | if (symbol->n_zeroes) | |
2072 | { | |
2073 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
c5aa993b | 2074 | '\0'-terminated. */ |
c906108c SS |
2075 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') |
2076 | { | |
2077 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2078 | into the minimal symbols. */ | |
2079 | char *p; | |
a109c7c1 | 2080 | |
224c3ddb SM |
2081 | p = (char *) obstack_alloc (&objfile->objfile_obstack, |
2082 | E_SYMNMLEN + 1); | |
c906108c SS |
2083 | strncpy (p, symbol->n_name, E_SYMNMLEN); |
2084 | p[E_SYMNMLEN] = '\0'; | |
2085 | *name = p; | |
2086 | } | |
2087 | else | |
2088 | /* Point to the unswapped name as that persists as long as the | |
2089 | objfile does. */ | |
c5aa993b | 2090 | *name = ((struct external_syment *) *raw)->e.e_name; |
c906108c SS |
2091 | } |
2092 | else if (symbol->n_sclass & 0x80) | |
2093 | { | |
b8b98ad1 | 2094 | *name = XCOFF_DATA (objfile)->debugsec + symbol->n_offset; |
c906108c SS |
2095 | } |
2096 | else | |
2097 | { | |
b8b98ad1 | 2098 | *name = XCOFF_DATA (objfile)->strtbl + symbol->n_offset; |
c906108c SS |
2099 | } |
2100 | ++*symnump; | |
2101 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2102 | if (symbol->n_numaux > 0) | |
2103 | { | |
2104 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2105 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2106 | ||
2107 | *symnump += symbol->n_numaux; | |
2108 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2109 | } | |
2110 | } | |
2111 | ||
23136709 KB |
2112 | static void |
2113 | function_outside_compilation_unit_complaint (const char *arg1) | |
2114 | { | |
b98664d3 | 2115 | complaint (_("function `%s' appears to be defined " |
3e43a32a | 2116 | "outside of all compilation units"), |
23136709 KB |
2117 | arg1); |
2118 | } | |
2119 | ||
c906108c | 2120 | static void |
8dddcb8f TT |
2121 | scan_xcoff_symtab (minimal_symbol_reader &reader, |
2122 | struct objfile *objfile) | |
c906108c | 2123 | { |
08feed99 | 2124 | struct gdbarch *gdbarch = objfile->arch (); |
581e13c1 | 2125 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
0d5cff50 | 2126 | const char *filestring = NULL; |
c906108c | 2127 | |
0d5cff50 | 2128 | const char *namestring; |
c906108c SS |
2129 | bfd *abfd; |
2130 | asection *bfd_sect; | |
2131 | unsigned int nsyms; | |
2132 | ||
2133 | /* Current partial symtab */ | |
891813be | 2134 | legacy_psymtab *pst; |
c906108c | 2135 | |
581e13c1 | 2136 | /* List of current psymtab's include files. */ |
0d5cff50 | 2137 | const char **psymtab_include_list; |
c906108c SS |
2138 | int includes_allocated; |
2139 | int includes_used; | |
2140 | ||
581e13c1 | 2141 | /* Index within current psymtab dependency list. */ |
891813be | 2142 | legacy_psymtab **dependency_list; |
c906108c SS |
2143 | int dependencies_used, dependencies_allocated; |
2144 | ||
2145 | char *sraw_symbol; | |
2146 | struct internal_syment symbol; | |
96baa820 | 2147 | union internal_auxent main_aux[5]; |
c906108c SS |
2148 | unsigned int ssymnum; |
2149 | ||
0d5cff50 | 2150 | const char *last_csect_name = NULL; /* Last seen csect's name and value. */ |
c906108c SS |
2151 | CORE_ADDR last_csect_val = 0; |
2152 | int last_csect_sec = 0; | |
581e13c1 | 2153 | int misc_func_recorded = 0; /* true if any misc. function. */ |
c906108c SS |
2154 | int textlow_not_set = 1; |
2155 | ||
891813be | 2156 | pst = (legacy_psymtab *) 0; |
c906108c SS |
2157 | |
2158 | includes_allocated = 30; | |
2159 | includes_used = 0; | |
0d5cff50 DE |
2160 | psymtab_include_list = (const char **) alloca (includes_allocated * |
2161 | sizeof (const char *)); | |
c906108c SS |
2162 | |
2163 | dependencies_allocated = 30; | |
2164 | dependencies_used = 0; | |
2165 | dependency_list = | |
891813be TT |
2166 | (legacy_psymtab **) alloca (dependencies_allocated * |
2167 | sizeof (legacy_psymtab *)); | |
c906108c | 2168 | |
46212e0b | 2169 | set_last_source_file (NULL); |
c906108c SS |
2170 | |
2171 | abfd = objfile->obfd; | |
13c763f4 | 2172 | next_symbol_text_func = xcoff_next_symbol_text; |
c906108c | 2173 | |
b8b98ad1 TT |
2174 | sraw_symbol = XCOFF_DATA (objfile)->symtbl; |
2175 | nsyms = XCOFF_DATA (objfile)->symtbl_num_syms; | |
c906108c SS |
2176 | ssymnum = 0; |
2177 | while (ssymnum < nsyms) | |
2178 | { | |
7a78ae4e | 2179 | int sclass; |
c906108c SS |
2180 | |
2181 | QUIT; | |
2182 | ||
7a78ae4e ND |
2183 | bfd_coff_swap_sym_in (abfd, sraw_symbol, &symbol); |
2184 | sclass = symbol.n_sclass; | |
2185 | ||
c906108c SS |
2186 | switch (sclass) |
2187 | { | |
2188 | case C_EXT: | |
2189 | case C_HIDEXT: | |
55bcecda | 2190 | case C_WEAKEXT: |
c906108c SS |
2191 | { |
2192 | /* The CSECT auxent--always the last auxent. */ | |
2193 | union internal_auxent csect_aux; | |
2194 | unsigned int symnum_before = ssymnum; | |
2195 | ||
96baa820 | 2196 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2197 | &ssymnum, objfile); |
2198 | if (symbol.n_numaux > 1) | |
2199 | { | |
2200 | bfd_coff_swap_aux_in | |
2201 | (objfile->obfd, | |
c5aa993b | 2202 | sraw_symbol - coff_data (abfd)->local_symesz, |
c906108c SS |
2203 | symbol.n_type, |
2204 | symbol.n_sclass, | |
2205 | symbol.n_numaux - 1, | |
2206 | symbol.n_numaux, | |
2207 | &csect_aux); | |
2208 | } | |
2209 | else | |
96baa820 | 2210 | csect_aux = main_aux[0]; |
c906108c | 2211 | |
977adac5 ND |
2212 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2213 | if (namestring[0] == '$' | |
c906108c SS |
2214 | || (namestring[0] == '.' && namestring[1] == '$')) |
2215 | break; | |
2216 | ||
2217 | switch (csect_aux.x_csect.x_smtyp & 0x7) | |
2218 | { | |
2219 | case XTY_SD: | |
2220 | switch (csect_aux.x_csect.x_smclas) | |
2221 | { | |
2222 | case XMC_PR: | |
2223 | if (last_csect_name) | |
2224 | { | |
2225 | /* If no misc. function recorded in the last | |
581e13c1 | 2226 | seen csect, enter it as a function. This |
c906108c SS |
2227 | will take care of functions like strcmp() |
2228 | compiled by xlc. */ | |
2229 | ||
2230 | if (!misc_func_recorded) | |
2231 | { | |
ec92004f | 2232 | record_minimal_symbol |
8dddcb8f | 2233 | (reader, last_csect_name, last_csect_val, |
ec92004f JB |
2234 | mst_text, last_csect_sec, objfile); |
2235 | misc_func_recorded = 1; | |
c906108c SS |
2236 | } |
2237 | ||
2238 | if (pst != NULL) | |
2239 | { | |
2240 | /* We have to allocate one psymtab for | |
2241 | each program csect, because their text | |
2242 | sections need not be adjacent. */ | |
2243 | xcoff_end_psymtab | |
5c80ed9d TT |
2244 | (objfile, pst, psymtab_include_list, |
2245 | includes_used, symnum_before, dependency_list, | |
c906108c SS |
2246 | dependencies_used, textlow_not_set); |
2247 | includes_used = 0; | |
2248 | dependencies_used = 0; | |
2249 | /* Give all psymtabs for this source file the same | |
2250 | name. */ | |
2251 | pst = xcoff_start_psymtab | |
d4f3574e | 2252 | (objfile, |
c906108c | 2253 | filestring, |
939652a5 | 2254 | symnum_before); |
c906108c SS |
2255 | } |
2256 | } | |
977adac5 ND |
2257 | /* Activate the misc_func_recorded mechanism for |
2258 | compiler- and linker-generated CSECTs like ".strcmp" | |
2259 | and "@FIX1". */ | |
2260 | if (namestring && (namestring[0] == '.' | |
2261 | || namestring[0] == '@')) | |
c906108c SS |
2262 | { |
2263 | last_csect_name = namestring; | |
2264 | last_csect_val = symbol.n_value; | |
ec92004f | 2265 | last_csect_sec = symbol.n_scnum; |
c906108c SS |
2266 | } |
2267 | if (pst != NULL) | |
2268 | { | |
2269 | CORE_ADDR highval = | |
a109c7c1 MS |
2270 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; |
2271 | ||
79748972 | 2272 | if (highval > pst->raw_text_high ()) |
4ae976d1 | 2273 | pst->set_text_high (highval); |
52948f01 | 2274 | if (!pst->text_low_valid |
79748972 | 2275 | || symbol.n_value < pst->raw_text_low ()) |
4ae976d1 | 2276 | pst->set_text_low (symbol.n_value); |
c906108c SS |
2277 | } |
2278 | misc_func_recorded = 0; | |
2279 | break; | |
2280 | ||
2281 | case XMC_RW: | |
6904b546 | 2282 | case XMC_TD: |
c906108c SS |
2283 | /* Data variables are recorded in the minimal symbol |
2284 | table, except for section symbols. */ | |
2285 | if (*namestring != '.') | |
4d1eb6b4 | 2286 | record_minimal_symbol |
8dddcb8f | 2287 | (reader, namestring, symbol.n_value, |
c906108c | 2288 | sclass == C_HIDEXT ? mst_file_data : mst_data, |
4d1eb6b4 | 2289 | symbol.n_scnum, objfile); |
c906108c SS |
2290 | break; |
2291 | ||
2292 | case XMC_TC0: | |
2293 | if (toc_offset) | |
8a3fe4f8 | 2294 | warning (_("More than one XMC_TC0 symbol found.")); |
c906108c SS |
2295 | toc_offset = symbol.n_value; |
2296 | ||
3e43a32a MS |
2297 | /* Make TOC offset relative to start address of |
2298 | section. */ | |
c906108c SS |
2299 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); |
2300 | if (bfd_sect) | |
fd361982 | 2301 | toc_offset -= bfd_section_vma (bfd_sect); |
c906108c SS |
2302 | break; |
2303 | ||
2304 | case XMC_TC: | |
2305 | /* These symbols tell us where the TOC entry for a | |
2306 | variable is, not the variable itself. */ | |
2307 | break; | |
2308 | ||
2309 | default: | |
2310 | break; | |
2311 | } | |
2312 | break; | |
2313 | ||
2314 | case XTY_LD: | |
2315 | switch (csect_aux.x_csect.x_smclas) | |
2316 | { | |
2317 | case XMC_PR: | |
2318 | /* A function entry point. */ | |
2319 | ||
2320 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2321 | first_fun_line_offset = | |
96baa820 | 2322 | main_aux[0].x_sym.x_fcnary.x_fcn.x_lnnoptr; |
a2e3e93f SM |
2323 | |
2324 | record_minimal_symbol | |
8dddcb8f | 2325 | (reader, namestring, symbol.n_value, |
a2e3e93f SM |
2326 | sclass == C_HIDEXT ? mst_file_text : mst_text, |
2327 | symbol.n_scnum, objfile); | |
2328 | misc_func_recorded = 1; | |
c906108c SS |
2329 | break; |
2330 | ||
2331 | case XMC_GL: | |
2332 | /* shared library function trampoline code entry | |
581e13c1 | 2333 | point. */ |
c906108c SS |
2334 | |
2335 | /* record trampoline code entries as | |
2336 | mst_solib_trampoline symbol. When we lookup mst | |
2337 | symbols, we will choose mst_text over | |
581e13c1 | 2338 | mst_solib_trampoline. */ |
ec92004f | 2339 | record_minimal_symbol |
8dddcb8f | 2340 | (reader, namestring, symbol.n_value, |
ec92004f JB |
2341 | mst_solib_trampoline, symbol.n_scnum, objfile); |
2342 | misc_func_recorded = 1; | |
c906108c SS |
2343 | break; |
2344 | ||
2345 | case XMC_DS: | |
2346 | /* The symbols often have the same names as | |
2347 | debug symbols for functions, and confuse | |
2348 | lookup_symbol. */ | |
2349 | break; | |
2350 | ||
2351 | default: | |
2352 | ||
2353 | /* xlc puts each variable in a separate csect, | |
2354 | so we get an XTY_SD for each variable. But | |
2355 | gcc puts several variables in a csect, so | |
2356 | that each variable only gets an XTY_LD. We | |
2357 | still need to record them. This will | |
2358 | typically be XMC_RW; I suspect XMC_RO and | |
2359 | XMC_BS might be possible too. */ | |
2360 | if (*namestring != '.') | |
4d1eb6b4 | 2361 | record_minimal_symbol |
8dddcb8f | 2362 | (reader, namestring, symbol.n_value, |
c906108c | 2363 | sclass == C_HIDEXT ? mst_file_data : mst_data, |
4d1eb6b4 | 2364 | symbol.n_scnum, objfile); |
c906108c SS |
2365 | break; |
2366 | } | |
2367 | break; | |
2368 | ||
2369 | case XTY_CM: | |
2370 | switch (csect_aux.x_csect.x_smclas) | |
2371 | { | |
2372 | case XMC_RW: | |
2373 | case XMC_BS: | |
2374 | /* Common variables are recorded in the minimal symbol | |
2375 | table, except for section symbols. */ | |
2376 | if (*namestring != '.') | |
4d1eb6b4 | 2377 | record_minimal_symbol |
8dddcb8f | 2378 | (reader, namestring, symbol.n_value, |
c906108c | 2379 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, |
4d1eb6b4 | 2380 | symbol.n_scnum, objfile); |
c906108c SS |
2381 | break; |
2382 | } | |
2383 | break; | |
2384 | ||
2385 | default: | |
2386 | break; | |
2387 | } | |
2388 | } | |
2389 | break; | |
2390 | case C_FILE: | |
2391 | { | |
2392 | unsigned int symnum_before; | |
2393 | ||
2394 | symnum_before = ssymnum; | |
96baa820 | 2395 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
c906108c SS |
2396 | &ssymnum, objfile); |
2397 | ||
2398 | /* See if the last csect needs to be recorded. */ | |
2399 | ||
2400 | if (last_csect_name && !misc_func_recorded) | |
2401 | { | |
c906108c SS |
2402 | /* If no misc. function recorded in the last seen csect, enter |
2403 | it as a function. This will take care of functions like | |
2404 | strcmp() compiled by xlc. */ | |
2405 | ||
8dddcb8f | 2406 | record_minimal_symbol (reader, last_csect_name, last_csect_val, |
ec92004f JB |
2407 | mst_text, last_csect_sec, objfile); |
2408 | misc_func_recorded = 1; | |
c906108c SS |
2409 | } |
2410 | ||
2411 | if (pst) | |
2412 | { | |
5c80ed9d TT |
2413 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, |
2414 | includes_used, symnum_before, | |
2415 | dependency_list, dependencies_used, | |
2416 | textlow_not_set); | |
c906108c SS |
2417 | includes_used = 0; |
2418 | dependencies_used = 0; | |
2419 | } | |
2420 | first_fun_line_offset = 0; | |
2421 | ||
2422 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2423 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2424 | do things the standard COFF way and put it in the auxent. | |
2425 | We use the auxent if the symbol is ".file" and an auxent | |
2426 | exists, otherwise use the symbol itself. */ | |
2427 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2428 | { | |
96baa820 | 2429 | filestring = coff_getfilename (&main_aux[0], objfile); |
c906108c SS |
2430 | } |
2431 | else | |
2432 | filestring = namestring; | |
2433 | ||
d4f3574e | 2434 | pst = xcoff_start_psymtab (objfile, |
c906108c | 2435 | filestring, |
939652a5 | 2436 | symnum_before); |
c906108c SS |
2437 | last_csect_name = NULL; |
2438 | } | |
2439 | break; | |
2440 | ||
2441 | default: | |
2442 | { | |
b98664d3 | 2443 | complaint (_("Storage class %d not recognized during scan"), |
3e43a32a | 2444 | sclass); |
c906108c SS |
2445 | } |
2446 | /* FALLTHROUGH */ | |
2447 | ||
86a73007 | 2448 | case C_FCN: |
c906108c SS |
2449 | /* C_FCN is .bf and .ef symbols. I think it is sufficient |
2450 | to handle only the C_FUN and C_EXT. */ | |
c906108c SS |
2451 | |
2452 | case C_BSTAT: | |
2453 | case C_ESTAT: | |
2454 | case C_ARG: | |
2455 | case C_REGPARM: | |
2456 | case C_REG: | |
2457 | case C_TPDEF: | |
2458 | case C_STRTAG: | |
2459 | case C_UNTAG: | |
2460 | case C_ENTAG: | |
2461 | case C_LABEL: | |
2462 | case C_NULL: | |
2463 | ||
2464 | /* C_EINCL means we are switching back to the main file. But there | |
2465 | is no reason to care; the only thing we want to know about | |
2466 | includes is the names of all the included (.h) files. */ | |
2467 | case C_EINCL: | |
2468 | ||
2469 | case C_BLOCK: | |
2470 | ||
2471 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2472 | used instead. */ | |
2473 | case C_STAT: | |
2474 | ||
2475 | /* I don't think the name of the common block (as opposed to the | |
2476 | variables within it) is something which is user visible | |
2477 | currently. */ | |
2478 | case C_BCOMM: | |
2479 | case C_ECOMM: | |
2480 | ||
2481 | case C_PSYM: | |
2482 | case C_RPSYM: | |
2483 | ||
2484 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2485 | so C_LSYM would appear to be only for locals. */ | |
2486 | case C_LSYM: | |
2487 | ||
2488 | case C_AUTO: | |
2489 | case C_RSYM: | |
2490 | { | |
2491 | /* We probably could save a few instructions by assuming that | |
2492 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
7a78ae4e | 2493 | int naux1 = symbol.n_numaux + 1; |
a109c7c1 | 2494 | |
c906108c | 2495 | ssymnum += naux1; |
7a78ae4e | 2496 | sraw_symbol += bfd_coff_symesz (abfd) * naux1; |
c906108c SS |
2497 | } |
2498 | break; | |
2499 | ||
2500 | case C_BINCL: | |
d5d0a62f | 2501 | { |
581e13c1 | 2502 | /* Mark down an include file in the current psymtab. */ |
d5d0a62f | 2503 | enum language tmp_language; |
a109c7c1 | 2504 | |
d5d0a62f EZ |
2505 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2506 | &ssymnum, objfile); | |
2507 | ||
2508 | tmp_language = deduce_language_from_filename (namestring); | |
2509 | ||
2510 | /* Only change the psymtab's language if we've learned | |
2511 | something useful (eg. tmp_language is not language_unknown). | |
2512 | In addition, to match what start_subfile does, never change | |
2513 | from C++ to C. */ | |
2514 | if (tmp_language != language_unknown | |
2515 | && (tmp_language != language_c | |
2516 | || psymtab_language != language_cplus)) | |
2517 | psymtab_language = tmp_language; | |
2518 | ||
2519 | /* In C++, one may expect the same filename to come round many | |
2520 | times, when code is coming alternately from the main file | |
581e13c1 | 2521 | and from inline functions in other files. So I check to see |
d5d0a62f EZ |
2522 | if this is a file we've seen before -- either the main |
2523 | source file, or a previously included file. | |
2524 | ||
2525 | This seems to be a lot of time to be spending on N_SOL, but | |
2526 | things like "break c-exp.y:435" need to work (I | |
2527 | suppose the psymtab_include_list could be hashed or put | |
2528 | in a binary tree, if profiling shows this is a major hog). */ | |
7ecb6532 | 2529 | if (pst && strcmp (namestring, pst->filename) == 0) |
d5d0a62f | 2530 | continue; |
a109c7c1 | 2531 | |
d5d0a62f | 2532 | { |
aa1ee363 | 2533 | int i; |
a109c7c1 | 2534 | |
d5d0a62f | 2535 | for (i = 0; i < includes_used; i++) |
7ecb6532 | 2536 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
d5d0a62f EZ |
2537 | { |
2538 | i = -1; | |
2539 | break; | |
2540 | } | |
2541 | if (i == -1) | |
2542 | continue; | |
2543 | } | |
2544 | psymtab_include_list[includes_used++] = namestring; | |
2545 | if (includes_used >= includes_allocated) | |
2546 | { | |
0d5cff50 | 2547 | const char **orig = psymtab_include_list; |
c906108c | 2548 | |
0d5cff50 | 2549 | psymtab_include_list = (const char **) |
d5d0a62f | 2550 | alloca ((includes_allocated *= 2) * |
0d5cff50 | 2551 | sizeof (const char *)); |
4efb68b1 | 2552 | memcpy (psymtab_include_list, orig, |
0d5cff50 | 2553 | includes_used * sizeof (const char *)); |
d5d0a62f EZ |
2554 | } |
2555 | continue; | |
2556 | } | |
c906108c SS |
2557 | case C_FUN: |
2558 | /* The value of the C_FUN is not the address of the function (it | |
2559 | appears to be the address before linking), but as long as it | |
2560 | is smaller than the actual address, then find_pc_partial_function | |
2561 | will use the minimal symbols instead. I hope. */ | |
2562 | ||
2563 | case C_GSYM: | |
2564 | case C_ECOML: | |
2565 | case C_DECL: | |
2566 | case C_STSYM: | |
d5d0a62f | 2567 | { |
e28566f7 | 2568 | const char *p; |
a109c7c1 | 2569 | |
d5d0a62f EZ |
2570 | swap_sym (&symbol, &main_aux[0], &namestring, &sraw_symbol, |
2571 | &ssymnum, objfile); | |
2572 | ||
ed4b0e6a | 2573 | p = strchr (namestring, ':'); |
d5d0a62f EZ |
2574 | if (!p) |
2575 | continue; /* Not a debugging symbol. */ | |
2576 | ||
2577 | /* Main processing section for debugging symbols which | |
2578 | the initial read through the symbol tables needs to worry | |
2579 | about. If we reach this point, the symbol which we are | |
2580 | considering is definitely one we are interested in. | |
2581 | p must also contain the (valid) index into the namestring | |
2582 | which indicates the debugging type symbol. */ | |
2583 | ||
2584 | switch (p[1]) | |
2585 | { | |
2586 | case 'S': | |
5e2b427d | 2587 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 2588 | namestring = gdbarch_static_transform_name |
5e2b427d | 2589 | (gdbarch, namestring); |
149ad273 | 2590 | |
31edb802 CB |
2591 | add_psymbol_to_list (gdb::string_view (namestring, |
2592 | p - namestring), | |
2593 | true, VAR_DOMAIN, LOC_STATIC, | |
79748972 | 2594 | SECT_OFF_DATA (objfile), |
75aedd27 | 2595 | psymbol_placement::STATIC, |
1762568f | 2596 | symbol.n_value, |
d5d0a62f EZ |
2597 | psymtab_language, objfile); |
2598 | continue; | |
2599 | ||
2600 | case 'G': | |
d5d0a62f | 2601 | /* The addresses in these entries are reported to be |
581e13c1 | 2602 | wrong. See the code that reads 'G's for symtabs. */ |
31edb802 CB |
2603 | add_psymbol_to_list (gdb::string_view (namestring, |
2604 | p - namestring), | |
2605 | true, VAR_DOMAIN, LOC_STATIC, | |
79748972 | 2606 | SECT_OFF_DATA (objfile), |
75aedd27 | 2607 | psymbol_placement::GLOBAL, |
1762568f | 2608 | symbol.n_value, |
d5d0a62f EZ |
2609 | psymtab_language, objfile); |
2610 | continue; | |
2611 | ||
2612 | case 'T': | |
2613 | /* When a 'T' entry is defining an anonymous enum, it | |
2614 | may have a name which is the empty string, or a | |
2615 | single space. Since they're not really defining a | |
2616 | symbol, those shouldn't go in the partial symbol | |
2617 | table. We do pick up the elements of such enums at | |
2618 | 'check_enum:', below. */ | |
2619 | if (p >= namestring + 2 | |
2620 | || (p == namestring + 1 | |
2621 | && namestring[0] != ' ')) | |
2622 | { | |
31edb802 CB |
2623 | add_psymbol_to_list (gdb::string_view (namestring, |
2624 | p - namestring), | |
2625 | true, STRUCT_DOMAIN, LOC_TYPEDEF, -1, | |
75aedd27 | 2626 | psymbol_placement::STATIC, |
1762568f | 2627 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2628 | if (p[2] == 't') |
2629 | { | |
2630 | /* Also a typedef with the same name. */ | |
31edb802 CB |
2631 | add_psymbol_to_list (gdb::string_view (namestring, |
2632 | p - namestring), | |
2633 | true, VAR_DOMAIN, LOC_TYPEDEF, -1, | |
75aedd27 | 2634 | psymbol_placement::STATIC, |
1762568f | 2635 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2636 | p += 1; |
2637 | } | |
d5d0a62f EZ |
2638 | } |
2639 | goto check_enum; | |
2640 | ||
2641 | case 't': | |
581e13c1 | 2642 | if (p != namestring) /* a name is there, not just :T... */ |
d5d0a62f | 2643 | { |
31edb802 CB |
2644 | add_psymbol_to_list (gdb::string_view (namestring, |
2645 | p - namestring), | |
2646 | true, VAR_DOMAIN, LOC_TYPEDEF, -1, | |
75aedd27 | 2647 | psymbol_placement::STATIC, |
1762568f | 2648 | 0, psymtab_language, objfile); |
d5d0a62f EZ |
2649 | } |
2650 | check_enum: | |
2651 | /* If this is an enumerated type, we need to | |
2652 | add all the enum constants to the partial symbol | |
2653 | table. This does not cover enums without names, e.g. | |
2654 | "enum {a, b} c;" in C, but fortunately those are | |
2655 | rare. There is no way for GDB to find those from the | |
2656 | enum type without spending too much time on it. Thus | |
2657 | to solve this problem, the compiler needs to put out the | |
2658 | enum in a nameless type. GCC2 does this. */ | |
2659 | ||
2660 | /* We are looking for something of the form | |
2661 | <name> ":" ("t" | "T") [<number> "="] "e" | |
2662 | {<constant> ":" <value> ","} ";". */ | |
2663 | ||
2664 | /* Skip over the colon and the 't' or 'T'. */ | |
2665 | p += 2; | |
2666 | /* This type may be given a number. Also, numbers can come | |
2667 | in pairs like (0,26). Skip over it. */ | |
2668 | while ((*p >= '0' && *p <= '9') | |
2669 | || *p == '(' || *p == ',' || *p == ')' | |
2670 | || *p == '=') | |
2671 | p++; | |
2672 | ||
2673 | if (*p++ == 'e') | |
2674 | { | |
3e43a32a MS |
2675 | /* The aix4 compiler emits extra crud before the |
2676 | members. */ | |
d5d0a62f EZ |
2677 | if (*p == '-') |
2678 | { | |
2679 | /* Skip over the type (?). */ | |
2680 | while (*p != ':') | |
2681 | p++; | |
2682 | ||
2683 | /* Skip over the colon. */ | |
2684 | p++; | |
2685 | } | |
2686 | ||
2687 | /* We have found an enumerated type. */ | |
2688 | /* According to comments in read_enum_type | |
2689 | a comma could end it instead of a semicolon. | |
2690 | I don't know where that happens. | |
2691 | Accept either. */ | |
2692 | while (*p && *p != ';' && *p != ',') | |
2693 | { | |
e28566f7 | 2694 | const char *q; |
d5d0a62f EZ |
2695 | |
2696 | /* Check for and handle cretinous dbx symbol name | |
2697 | continuation! */ | |
2698 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) | |
2699 | p = next_symbol_text (objfile); | |
2700 | ||
2701 | /* Point to the character after the name | |
2702 | of the enum constant. */ | |
2703 | for (q = p; *q && *q != ':'; q++) | |
2704 | ; | |
2705 | /* Note that the value doesn't matter for | |
2706 | enum constants in psymtabs, just in symtabs. */ | |
31edb802 | 2707 | add_psymbol_to_list (gdb::string_view (p, q - p), true, |
79748972 | 2708 | VAR_DOMAIN, LOC_CONST, -1, |
75aedd27 | 2709 | psymbol_placement::STATIC, |
d5d0a62f EZ |
2710 | 0, psymtab_language, objfile); |
2711 | /* Point past the name. */ | |
2712 | p = q; | |
2713 | /* Skip over the value. */ | |
2714 | while (*p && *p != ',') | |
2715 | p++; | |
2716 | /* Advance past the comma. */ | |
2717 | if (*p) | |
2718 | p++; | |
2719 | } | |
2720 | } | |
2721 | continue; | |
2722 | ||
2723 | case 'c': | |
2724 | /* Constant, e.g. from "const" in Pascal. */ | |
31edb802 CB |
2725 | add_psymbol_to_list (gdb::string_view (namestring, |
2726 | p - namestring), | |
2727 | true, VAR_DOMAIN, LOC_CONST, -1, | |
75aedd27 | 2728 | psymbol_placement::STATIC, |
d5d0a62f EZ |
2729 | 0, psymtab_language, objfile); |
2730 | continue; | |
2731 | ||
2732 | case 'f': | |
2733 | if (! pst) | |
2734 | { | |
2735 | int name_len = p - namestring; | |
224c3ddb | 2736 | char *name = (char *) xmalloc (name_len + 1); |
a109c7c1 | 2737 | |
d5d0a62f EZ |
2738 | memcpy (name, namestring, name_len); |
2739 | name[name_len] = '\0'; | |
23136709 | 2740 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2741 | xfree (name); |
2742 | } | |
31edb802 CB |
2743 | add_psymbol_to_list (gdb::string_view (namestring, |
2744 | p - namestring), | |
2745 | true, VAR_DOMAIN, LOC_BLOCK, | |
79748972 | 2746 | SECT_OFF_TEXT (objfile), |
75aedd27 | 2747 | psymbol_placement::STATIC, |
1762568f | 2748 | symbol.n_value, |
d5d0a62f EZ |
2749 | psymtab_language, objfile); |
2750 | continue; | |
2751 | ||
2752 | /* Global functions were ignored here, but now they | |
2753 | are put into the global psymtab like one would expect. | |
2754 | They're also in the minimal symbol table. */ | |
2755 | case 'F': | |
2756 | if (! pst) | |
2757 | { | |
2758 | int name_len = p - namestring; | |
224c3ddb | 2759 | char *name = (char *) xmalloc (name_len + 1); |
a109c7c1 | 2760 | |
d5d0a62f EZ |
2761 | memcpy (name, namestring, name_len); |
2762 | name[name_len] = '\0'; | |
23136709 | 2763 | function_outside_compilation_unit_complaint (name); |
d5d0a62f EZ |
2764 | xfree (name); |
2765 | } | |
9f1d5432 PH |
2766 | |
2767 | /* We need only the minimal symbols for these | |
581e13c1 | 2768 | loader-generated definitions. Keeping the global |
9f1d5432 | 2769 | symbols leads to "in psymbols but not in symbols" |
581e13c1 | 2770 | errors. */ |
61012eef | 2771 | if (startswith (namestring, "@FIX")) |
9f1d5432 PH |
2772 | continue; |
2773 | ||
31edb802 CB |
2774 | add_psymbol_to_list (gdb::string_view (namestring, |
2775 | p - namestring), | |
2776 | true, VAR_DOMAIN, LOC_BLOCK, | |
79748972 | 2777 | SECT_OFF_TEXT (objfile), |
75aedd27 | 2778 | psymbol_placement::GLOBAL, |
1762568f | 2779 | symbol.n_value, |
d5d0a62f EZ |
2780 | psymtab_language, objfile); |
2781 | continue; | |
2782 | ||
2783 | /* Two things show up here (hopefully); static symbols of | |
2784 | local scope (static used inside braces) or extensions | |
2785 | of structure symbols. We can ignore both. */ | |
2786 | case 'V': | |
2787 | case '(': | |
2788 | case '0': | |
2789 | case '1': | |
2790 | case '2': | |
2791 | case '3': | |
2792 | case '4': | |
2793 | case '5': | |
2794 | case '6': | |
2795 | case '7': | |
2796 | case '8': | |
2797 | case '9': | |
2798 | case '-': | |
3e43a32a MS |
2799 | case '#': /* For symbol identification (used in |
2800 | live ranges). */ | |
d5d0a62f EZ |
2801 | continue; |
2802 | ||
2803 | case ':': | |
2804 | /* It is a C++ nested symbol. We don't need to record it | |
2805 | (I don't think); if we try to look up foo::bar::baz, | |
2806 | then symbols for the symtab containing foo should get | |
2807 | read in, I think. */ | |
2808 | /* Someone says sun cc puts out symbols like | |
2809 | /foo/baz/maclib::/usr/local/bin/maclib, | |
2810 | which would get here with a symbol type of ':'. */ | |
2811 | continue; | |
2812 | ||
2813 | default: | |
3e43a32a MS |
2814 | /* Unexpected symbol descriptor. The second and |
2815 | subsequent stabs of a continued stab can show up | |
2816 | here. The question is whether they ever can mimic | |
2817 | a normal stab--it would be nice if not, since we | |
2818 | certainly don't want to spend the time searching to | |
2819 | the end of every string looking for a | |
2820 | backslash. */ | |
d5d0a62f | 2821 | |
b98664d3 | 2822 | complaint (_("unknown symbol descriptor `%c'"), p[1]); |
d5d0a62f EZ |
2823 | |
2824 | /* Ignore it; perhaps it is an extension that we don't | |
2825 | know about. */ | |
2826 | continue; | |
2827 | } | |
2828 | } | |
c906108c SS |
2829 | } |
2830 | } | |
2831 | ||
2832 | if (pst) | |
2833 | { | |
5c80ed9d | 2834 | xcoff_end_psymtab (objfile, pst, psymtab_include_list, includes_used, |
c906108c SS |
2835 | ssymnum, dependency_list, |
2836 | dependencies_used, textlow_not_set); | |
2837 | } | |
2838 | ||
581e13c1 MS |
2839 | /* Record the toc offset value of this symbol table into objfile |
2840 | structure. If no XMC_TC0 is found, toc_offset should be zero. | |
2841 | Another place to obtain this information would be file auxiliary | |
2842 | header. */ | |
c906108c | 2843 | |
b8b98ad1 | 2844 | XCOFF_DATA (objfile)->toc_offset = toc_offset; |
c906108c SS |
2845 | } |
2846 | ||
2847 | /* Return the toc offset value for a given objfile. */ | |
2848 | ||
2849 | CORE_ADDR | |
63807e1d | 2850 | xcoff_get_toc_offset (struct objfile *objfile) |
c906108c SS |
2851 | { |
2852 | if (objfile) | |
b8b98ad1 | 2853 | return XCOFF_DATA (objfile)->toc_offset; |
c906108c SS |
2854 | return 0; |
2855 | } | |
2856 | ||
2857 | /* Scan and build partial symbols for a symbol file. | |
2858 | We have been initialized by a call to dbx_symfile_init, which | |
2859 | put all the relevant info into a "struct dbx_symfile_info", | |
2860 | hung off the objfile structure. | |
2861 | ||
2862 | SECTION_OFFSETS contains offsets relative to which the symbols in the | |
581e13c1 MS |
2863 | various sections are (depending where the sections were actually |
2864 | loaded). */ | |
c906108c SS |
2865 | |
2866 | static void | |
b15cc25c | 2867 | xcoff_initial_scan (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
2868 | { |
2869 | bfd *abfd; | |
2870 | int val; | |
c5aa993b JM |
2871 | int num_symbols; /* # of symbols */ |
2872 | file_ptr symtab_offset; /* symbol table and */ | |
2873 | file_ptr stringtab_offset; /* string table file offsets */ | |
02dc647e | 2874 | struct xcoff_symfile_info *info; |
4262abfb | 2875 | const char *name; |
c906108c SS |
2876 | unsigned int size; |
2877 | ||
b8b98ad1 | 2878 | info = XCOFF_DATA (objfile); |
c906108c | 2879 | symfile_bfd = abfd = objfile->obfd; |
4262abfb | 2880 | name = objfile_name (objfile); |
c906108c SS |
2881 | |
2882 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2883 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2884 | stringtab_offset = symtab_offset + | |
c5aa993b | 2885 | num_symbols * coff_data (abfd)->local_symesz; |
c906108c SS |
2886 | |
2887 | info->min_lineno_offset = 0; | |
2888 | info->max_lineno_offset = 0; | |
2889 | bfd_map_over_sections (abfd, find_linenos, info); | |
2890 | ||
2891 | if (num_symbols > 0) | |
2892 | { | |
2893 | /* Read the string table. */ | |
2894 | init_stringtab (abfd, stringtab_offset, objfile); | |
2895 | ||
97cbe998 SDJ |
2896 | /* Read the .debug section, if present and if we're not ignoring |
2897 | it. */ | |
2898 | if (!(objfile->flags & OBJF_READNEVER)) | |
2899 | { | |
2900 | struct bfd_section *secp; | |
2901 | bfd_size_type length; | |
2902 | bfd_byte *debugsec = NULL; | |
c906108c | 2903 | |
97cbe998 SDJ |
2904 | secp = bfd_get_section_by_name (abfd, ".debug"); |
2905 | if (secp) | |
2906 | { | |
fd361982 | 2907 | length = bfd_section_size (secp); |
97cbe998 SDJ |
2908 | if (length) |
2909 | { | |
2910 | debugsec | |
2911 | = (bfd_byte *) obstack_alloc (&objfile->objfile_obstack, | |
2912 | length); | |
c906108c | 2913 | |
97cbe998 SDJ |
2914 | if (!bfd_get_full_section_contents (abfd, secp, &debugsec)) |
2915 | { | |
2916 | error (_("Error reading .debug section of `%s': %s"), | |
2917 | name, bfd_errmsg (bfd_get_error ())); | |
2918 | } | |
2919 | } | |
2920 | } | |
2921 | info->debugsec = (char *) debugsec; | |
2922 | } | |
c906108c SS |
2923 | } |
2924 | ||
2925 | /* Read the symbols. We keep them in core because we will want to | |
2926 | access them randomly in read_symbol*. */ | |
2927 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); | |
2928 | if (val < 0) | |
8a3fe4f8 | 2929 | error (_("Error reading symbols from %s: %s"), |
c906108c SS |
2930 | name, bfd_errmsg (bfd_get_error ())); |
2931 | size = coff_data (abfd)->local_symesz * num_symbols; | |
224c3ddb | 2932 | info->symtbl = (char *) obstack_alloc (&objfile->objfile_obstack, size); |
b8b98ad1 TT |
2933 | info->symtbl_num_syms = num_symbols; |
2934 | ||
2935 | val = bfd_bread (info->symtbl, size, abfd); | |
c906108c | 2936 | if (val != size) |
e2e0b3e5 | 2937 | perror_with_name (_("reading symbol table")); |
c906108c | 2938 | |
6eee24ce TT |
2939 | /* I'm not sure how how good num_symbols is; the rule of thumb in |
2940 | init_psymbol_list was developed for a.out. On the one hand, | |
2941 | num_symbols includes auxents. On the other hand, it doesn't | |
2942 | include N_SLINE. */ | |
2943 | init_psymbol_list (objfile, num_symbols); | |
c906108c | 2944 | |
33c7c59d | 2945 | scoped_free_pendings free_pending; |
d25e8719 | 2946 | minimal_symbol_reader reader (objfile); |
c906108c SS |
2947 | |
2948 | /* Now that the symbol table data of the executable file are all in core, | |
2949 | process them and define symbols accordingly. */ | |
2950 | ||
8dddcb8f | 2951 | scan_xcoff_symtab (reader, objfile); |
c906108c SS |
2952 | |
2953 | /* Install any minimal symbols that have been collected as the current | |
581e13c1 | 2954 | minimal symbols for this objfile. */ |
c906108c | 2955 | |
d25e8719 | 2956 | reader.install (); |
c906108c | 2957 | |
316a8b21 TG |
2958 | /* DWARF2 sections. */ |
2959 | ||
2960 | if (dwarf2_has_info (objfile, &dwarf2_xcoff_names)) | |
2961 | dwarf2_build_psymtabs (objfile); | |
2962 | ||
2963 | dwarf2_build_frame_info (objfile); | |
c906108c SS |
2964 | } |
2965 | \f | |
d4f3574e | 2966 | static void |
3e43a32a | 2967 | xcoff_symfile_offsets (struct objfile *objfile, |
37e136b1 | 2968 | const section_addr_info &addrs) |
c906108c | 2969 | { |
4d1eb6b4 | 2970 | const char *first_section_name; |
c906108c | 2971 | |
4d1eb6b4 | 2972 | default_symfile_offsets (objfile, addrs); |
c906108c | 2973 | |
4d1eb6b4 JB |
2974 | /* Oneof the weird side-effects of default_symfile_offsets is that |
2975 | it sometimes sets some section indices to zero for sections that, | |
2976 | in fact do not exist. See the body of default_symfile_offsets | |
2977 | for more info on when that happens. Undo that, as this then allows | |
2978 | us to test whether the associated section exists or not, and then | |
2979 | access it quickly (without searching it again). */ | |
b8fbeb18 | 2980 | |
6a053cb1 | 2981 | if (objfile->section_offsets.empty ()) |
4d1eb6b4 | 2982 | return; /* Is that even possible? Better safe than sorry. */ |
b8fbeb18 | 2983 | |
fd361982 | 2984 | first_section_name = bfd_section_name (objfile->sections[0].the_bfd_section); |
b8fbeb18 | 2985 | |
4d1eb6b4 JB |
2986 | if (objfile->sect_index_text == 0 |
2987 | && strcmp (first_section_name, ".text") != 0) | |
2988 | objfile->sect_index_text = -1; | |
b8fbeb18 | 2989 | |
4d1eb6b4 JB |
2990 | if (objfile->sect_index_data == 0 |
2991 | && strcmp (first_section_name, ".data") != 0) | |
2992 | objfile->sect_index_data = -1; | |
2993 | ||
2994 | if (objfile->sect_index_bss == 0 | |
2995 | && strcmp (first_section_name, ".bss") != 0) | |
2996 | objfile->sect_index_bss = -1; | |
2997 | ||
2998 | if (objfile->sect_index_rodata == 0 | |
2999 | && strcmp (first_section_name, ".rodata") != 0) | |
3000 | objfile->sect_index_rodata = -1; | |
c906108c SS |
3001 | } |
3002 | ||
3003 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
3004 | ||
00b5771c | 3005 | static const struct sym_fns xcoff_sym_fns = |
c906108c SS |
3006 | { |
3007 | ||
7a78ae4e | 3008 | /* It is possible that coff and xcoff should be merged as |
c906108c SS |
3009 | they do have fundamental similarities (for example, the extra storage |
3010 | classes used for stabs could presumably be recognized in any COFF file). | |
3011 | However, in addition to obvious things like all the csect hair, there are | |
3012 | some subtler differences between xcoffread.c and coffread.c, notably | |
3013 | the fact that coffread.c has no need to read in all the symbols, but | |
3014 | xcoffread.c reads all the symbols and does in fact randomly access them | |
3015 | (in C_BSTAT and line number processing). */ | |
3016 | ||
3e43a32a MS |
3017 | xcoff_new_init, /* init anything gbl to entire symtab */ |
3018 | xcoff_symfile_init, /* read initial info, setup for sym_read() */ | |
3019 | xcoff_initial_scan, /* read a symbol file into symtab */ | |
b11896a5 | 3020 | NULL, /* sym_read_psymbols */ |
3e43a32a MS |
3021 | xcoff_symfile_finish, /* finished with file, cleanup */ |
3022 | xcoff_symfile_offsets, /* xlate offsets ext->int form */ | |
3023 | default_symfile_segments, /* Get segment information from a file. */ | |
3024 | aix_process_linenos, | |
3025 | default_symfile_relocate, /* Relocate a debug section. */ | |
55aa24fb | 3026 | NULL, /* sym_probe_fns */ |
00b5771c | 3027 | &psym_functions |
c906108c SS |
3028 | }; |
3029 | ||
d5367fe1 JB |
3030 | /* Same as xcoff_get_n_import_files, but for core files. */ |
3031 | ||
3032 | static int | |
3033 | xcoff_get_core_n_import_files (bfd *abfd) | |
3034 | { | |
3035 | asection *sect = bfd_get_section_by_name (abfd, ".ldinfo"); | |
3036 | gdb_byte buf[4]; | |
3037 | file_ptr offset = 0; | |
3038 | int n_entries = 0; | |
3039 | ||
3040 | if (sect == NULL) | |
3041 | return -1; /* Not a core file. */ | |
3042 | ||
fd361982 | 3043 | for (offset = 0; offset < bfd_section_size (sect);) |
d5367fe1 JB |
3044 | { |
3045 | int next; | |
3046 | ||
3047 | n_entries++; | |
3048 | ||
3049 | if (!bfd_get_section_contents (abfd, sect, buf, offset, 4)) | |
3050 | return -1; | |
3051 | next = bfd_get_32 (abfd, buf); | |
3052 | if (next == 0) | |
3053 | break; /* This is the last entry. */ | |
3054 | offset += next; | |
3055 | } | |
3056 | ||
3057 | /* Return the number of entries, excluding the first one, which is | |
3058 | the path to the executable that produced this core file. */ | |
3059 | return n_entries - 1; | |
3060 | } | |
3061 | ||
3062 | /* Return the number of import files (shared libraries) that the given | |
3063 | BFD depends on. Return -1 if this number could not be computed. */ | |
3064 | ||
3065 | int | |
3066 | xcoff_get_n_import_files (bfd *abfd) | |
3067 | { | |
3068 | asection *sect = bfd_get_section_by_name (abfd, ".loader"); | |
3069 | gdb_byte buf[4]; | |
3070 | int l_nimpid; | |
3071 | ||
3072 | /* If the ".loader" section does not exist, the objfile is probably | |
3073 | not an executable. Might be a core file... */ | |
3074 | if (sect == NULL) | |
3075 | return xcoff_get_core_n_import_files (abfd); | |
3076 | ||
3077 | /* The number of entries in the Import Files Table is stored in | |
3078 | field l_nimpid. This field is always at offset 16, and is | |
3079 | always 4 bytes long. Read those 4 bytes. */ | |
3080 | ||
3081 | if (!bfd_get_section_contents (abfd, sect, buf, 16, 4)) | |
3082 | return -1; | |
3083 | l_nimpid = bfd_get_32 (abfd, buf); | |
3084 | ||
3085 | /* By convention, the first entry is the default LIBPATH value | |
3086 | to be used by the system loader, so it does not count towards | |
3087 | the number of import files. */ | |
3088 | return l_nimpid - 1; | |
3089 | } | |
3090 | ||
6c265988 | 3091 | void _initialize_xcoffread (); |
c906108c | 3092 | void |
6c265988 | 3093 | _initialize_xcoffread () |
c906108c | 3094 | { |
c256e171 | 3095 | add_symtab_fns (bfd_target_xcoff_flavour, &xcoff_sym_fns); |
c906108c | 3096 | } |