Commit | Line | Data |
---|---|---|
9b280a7f | 1 | /* Read AIX xcoff symbol tables and convert to internal format, for GDB. |
211b564e | 2 | Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 1997 |
9b280a7f | 3 | Free Software Foundation, Inc. |
e38e0312 JG |
4 | Derived from coffread.c, dbxread.c, and a lot of hacking. |
5 | Contributed by IBM Corporation. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
6c9638b4 | 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
e38e0312 | 22 | |
dd469789 JG |
23 | #include "defs.h" |
24 | #include "bfd.h" | |
25 | ||
e38e0312 JG |
26 | #include <sys/types.h> |
27 | #include <fcntl.h> | |
28 | #include <ctype.h> | |
2b576293 | 29 | #include "gdb_string.h" |
e38e0312 | 30 | |
e38e0312 | 31 | #include <sys/param.h> |
5e4d4b0f | 32 | #ifndef NO_SYS_FILE |
e38e0312 | 33 | #include <sys/file.h> |
5e4d4b0f | 34 | #endif |
2b576293 | 35 | #include "gdb_stat.h" |
e38e0312 | 36 | |
a367db89 | 37 | #include "coff/internal.h" |
27ad511f | 38 | #include "libcoff.h" /* FIXME, internal data from BFD */ |
a367db89 | 39 | #include "coff/rs6000.h" |
27ad511f | 40 | |
e38e0312 | 41 | #include "symtab.h" |
1ab3bf1b | 42 | #include "gdbtypes.h" |
e38e0312 | 43 | #include "symfile.h" |
5e2e79f8 | 44 | #include "objfiles.h" |
e38e0312 | 45 | #include "buildsym.h" |
d07734e3 | 46 | #include "stabsread.h" |
df1e1074 PS |
47 | #include "expression.h" |
48 | #include "language.h" /* Needed inside partial-stab.h */ | |
dd469789 | 49 | #include "complaints.h" |
e38e0312 | 50 | |
a81ce07d JK |
51 | #include "gdb-stabs.h" |
52 | ||
73262420 | 53 | /* For interface with stabsread.c. */ |
c41e08c4 | 54 | #include "aout/stab_gnu.h" |
1eeba686 | 55 | |
a367db89 JK |
56 | /* For interface with partial-stab.h. */ |
57 | #define N_UNDF 0 /* Undefined symbol */ | |
58 | #undef N_ABS | |
59 | #define N_ABS 2 | |
60 | #define N_TEXT 4 /* Text sym -- defined at offset in text seg */ | |
61 | #define N_DATA 6 /* Data sym -- defined at offset in data seg */ | |
62 | #define N_BSS 8 /* BSS sym -- defined at offset in zero'd seg */ | |
63 | #define N_COMM 0x12 /* Common symbol (visible after shared lib dynlink) */ | |
64 | #define N_FN 0x1f /* File name of .o file */ | |
65 | #define N_FN_SEQ 0x0C /* N_FN from Sequent compilers (sigh) */ | |
66 | /* Note: N_EXT can only be usefully OR-ed with N_UNDF, N_ABS, N_TEXT, | |
67 | N_DATA, or N_BSS. When the low-order bit of other types is set, | |
68 | (e.g. N_WARNING versus N_FN), they are two different types. */ | |
69 | #define N_EXT 1 /* External symbol (as opposed to local-to-this-file) */ | |
70 | #define N_INDR 0x0a | |
71 | ||
72 | /* The following symbols refer to set elements. | |
73 | All the N_SET[ATDB] symbols with the same name form one set. | |
74 | Space is allocated for the set in the text section, and each set | |
75 | elements value is stored into one word of the space. | |
76 | The first word of the space is the length of the set (number of elements). | |
77 | ||
78 | The address of the set is made into an N_SETV symbol | |
79 | whose name is the same as the name of the set. | |
80 | This symbol acts like a N_DATA global symbol | |
81 | in that it can satisfy undefined external references. */ | |
82 | ||
83 | /* These appear as input to LD, in a .o file. */ | |
84 | #define N_SETA 0x14 /* Absolute set element symbol */ | |
85 | #define N_SETT 0x16 /* Text set element symbol */ | |
86 | #define N_SETD 0x18 /* Data set element symbol */ | |
87 | #define N_SETB 0x1A /* Bss set element symbol */ | |
88 | ||
89 | /* This is output from LD. */ | |
90 | #define N_SETV 0x1C /* Pointer to set vector in data area. */ | |
91 | \f | |
bbb053fd JK |
92 | /* We put a pointer to this structure in the read_symtab_private field |
93 | of the psymtab. */ | |
a367db89 JK |
94 | |
95 | struct symloc { | |
96 | ||
97 | /* First symbol number for this file. */ | |
98 | ||
99 | int first_symnum; | |
100 | ||
101 | /* Number of symbols in the section of the symbol table devoted to | |
102 | this file's symbols (actually, the section bracketed may contain | |
103 | more than just this file's symbols). If numsyms is 0, the only | |
104 | reason for this thing's existence is the dependency list. Nothing | |
105 | else will happen when it is read in. */ | |
106 | ||
107 | int numsyms; | |
108 | ||
109 | /* Position of the start of the line number information for this psymtab. */ | |
110 | unsigned int lineno_off; | |
111 | }; | |
112 | ||
113 | /* Remember what we deduced to be the source language of this psymtab. */ | |
114 | ||
115 | static enum language psymtab_language = language_unknown; | |
116 | ||
117 | \f | |
e38e0312 JG |
118 | /* Simplified internal version of coff symbol table information */ |
119 | ||
120 | struct coff_symbol { | |
121 | char *c_name; | |
122 | int c_symnum; /* symbol number of this entry */ | |
d4a0983a | 123 | int c_naux; /* 0 if syment only, 1 if syment + auxent */ |
e38e0312 | 124 | long c_value; |
ef5b809c | 125 | unsigned char c_sclass; |
e38e0312 JG |
126 | int c_secnum; |
127 | unsigned int c_type; | |
128 | }; | |
129 | ||
e38e0312 JG |
130 | /* last function's saved coff symbol `cs' */ |
131 | ||
132 | static struct coff_symbol fcn_cs_saved; | |
133 | ||
134 | static bfd *symfile_bfd; | |
135 | ||
136 | /* Core address of start and end of text of current source file. | |
137 | This is calculated from the first function seen after a C_FILE | |
138 | symbol. */ | |
139 | ||
818de002 | 140 | |
e38e0312 JG |
141 | static CORE_ADDR cur_src_end_addr; |
142 | ||
143 | /* Core address of the end of the first object file. */ | |
144 | ||
145 | static CORE_ADDR first_object_file_end; | |
146 | ||
e38e0312 JG |
147 | /* initial symbol-table-debug-string vector length */ |
148 | ||
149 | #define INITIAL_STABVECTOR_LENGTH 40 | |
150 | ||
e38e0312 JG |
151 | /* Nonzero if within a function (so symbols should be local, |
152 | if nothing says specifically). */ | |
153 | ||
154 | int within_function; | |
155 | ||
a367db89 JK |
156 | /* Size of a COFF symbol. I think it is always 18, so I'm not sure |
157 | there is any reason not to just use a #define, but might as well | |
158 | ask BFD for the size and store it here, I guess. */ | |
e38e0312 JG |
159 | |
160 | static unsigned local_symesz; | |
161 | ||
e38e0312 JG |
162 | struct coff_symfile_info { |
163 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ | |
164 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ | |
a367db89 JK |
165 | |
166 | /* Pointer to the string table. */ | |
167 | char *strtbl; | |
168 | ||
169 | /* Pointer to debug section. */ | |
170 | char *debugsec; | |
171 | ||
172 | /* Pointer to the a.out symbol table. */ | |
173 | char *symtbl; | |
174 | ||
175 | /* Number of symbols in symtbl. */ | |
176 | int symtbl_num_syms; | |
05d52ace PS |
177 | |
178 | /* Offset in data section to TOC anchor. */ | |
179 | CORE_ADDR toc_offset; | |
e38e0312 JG |
180 | }; |
181 | ||
dd469789 JG |
182 | static struct complaint storclass_complaint = |
183 | {"Unexpected storage class: %d", 0, 0}; | |
184 | ||
185 | static struct complaint bf_notfound_complaint = | |
186 | {"line numbers off, `.bf' symbol not found", 0, 0}; | |
e38e0312 | 187 | |
df1e1074 PS |
188 | static struct complaint ef_complaint = |
189 | {"Mismatched .ef symbol ignored starting at symnum %d", 0, 0}; | |
190 | ||
191 | static struct complaint eb_complaint = | |
192 | {"Mismatched .eb symbol ignored starting at symnum %d", 0, 0}; | |
f8203ed0 | 193 | |
6e0949ae FF |
194 | static void |
195 | xcoff_initial_scan PARAMS ((struct objfile *, struct section_offsets *, int)); | |
196 | ||
197 | static void | |
198 | scan_xcoff_symtab PARAMS ((struct section_offsets *, struct objfile *)); | |
199 | ||
200 | static char * | |
201 | xcoff_next_symbol_text PARAMS ((struct objfile *)); | |
202 | ||
203 | static void | |
204 | record_include_begin PARAMS ((struct coff_symbol *)); | |
205 | ||
1ab3bf1b | 206 | static void |
818de002 PB |
207 | enter_line_range PARAMS ((struct subfile *, unsigned, unsigned, |
208 | CORE_ADDR, CORE_ADDR, unsigned *)); | |
1ab3bf1b | 209 | |
1ab3bf1b | 210 | static void |
d5931d79 | 211 | init_stringtab PARAMS ((bfd *, file_ptr, struct objfile *)); |
1ab3bf1b JG |
212 | |
213 | static void | |
9b280a7f | 214 | xcoff_symfile_init PARAMS ((struct objfile *)); |
80d68b1d FF |
215 | |
216 | static void | |
9b280a7f | 217 | xcoff_new_init PARAMS ((struct objfile *)); |
80d68b1d | 218 | |
1ab3bf1b | 219 | static void |
9b280a7f | 220 | xcoff_symfile_finish PARAMS ((struct objfile *)); |
1ab3bf1b | 221 | |
fe0b60b2 | 222 | static struct section_offsets * |
9b280a7f | 223 | xcoff_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR)); |
2670f34d | 224 | |
1ab3bf1b JG |
225 | static void |
226 | find_linenos PARAMS ((bfd *, sec_ptr, PTR)); | |
227 | ||
e8abe489 | 228 | static char * |
a367db89 | 229 | coff_getfilename PARAMS ((union internal_auxent *, struct objfile *)); |
e8abe489 | 230 | |
3c02636b JK |
231 | static void |
232 | read_symbol PARAMS ((struct internal_syment *, int)); | |
233 | ||
1ab3bf1b | 234 | static int |
c84a96d7 | 235 | read_symbol_lineno PARAMS ((int)); |
1ab3bf1b JG |
236 | |
237 | static int | |
c84a96d7 | 238 | read_symbol_nvalue PARAMS ((int)); |
1ab3bf1b JG |
239 | |
240 | static struct symbol * | |
241 | process_xcoff_symbol PARAMS ((struct coff_symbol *, struct objfile *)); | |
242 | ||
243 | static void | |
a367db89 | 244 | read_xcoff_symtab PARAMS ((struct partial_symtab *)); |
1ab3bf1b | 245 | |
6e0949ae | 246 | #if 0 |
1ab3bf1b JG |
247 | static void |
248 | add_stab_to_list PARAMS ((char *, struct pending_stabs **)); | |
6e0949ae FF |
249 | #endif |
250 | ||
251 | static int | |
252 | compare_lte PARAMS ((const void *, const void *)); | |
253 | ||
254 | static struct linetable * | |
255 | arrange_linetable PARAMS ((struct linetable *)); | |
256 | ||
257 | static void | |
258 | record_include_end PARAMS ((struct coff_symbol *)); | |
259 | ||
260 | static void | |
261 | process_linenos PARAMS ((CORE_ADDR, CORE_ADDR)); | |
1ab3bf1b | 262 | |
a81ce07d | 263 | \f |
a367db89 JK |
264 | /* Translate from a COFF section number (target_index) to a SECT_OFF_* |
265 | code. */ | |
266 | static int secnum_to_section PARAMS ((int, struct objfile *)); | |
211b564e | 267 | static asection * secnum_to_bfd_section PARAMS ((int, struct objfile *)); |
a81ce07d JK |
268 | |
269 | struct find_targ_sec_arg { | |
270 | int targ_index; | |
271 | int *resultp; | |
211b564e | 272 | asection **bfd_sect; |
a81ce07d JK |
273 | }; |
274 | ||
275 | static void find_targ_sec PARAMS ((bfd *, asection *, void *)); | |
276 | ||
277 | static void find_targ_sec (abfd, sect, obj) | |
278 | bfd *abfd; | |
279 | asection *sect; | |
280 | PTR obj; | |
281 | { | |
282 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *)obj; | |
283 | if (sect->target_index == args->targ_index) | |
284 | { | |
285 | /* This is the section. Figure out what SECT_OFF_* code it is. */ | |
286 | if (bfd_get_section_flags (abfd, sect) & SEC_CODE) | |
287 | *args->resultp = SECT_OFF_TEXT; | |
288 | else if (bfd_get_section_flags (abfd, sect) & SEC_LOAD) | |
289 | *args->resultp = SECT_OFF_DATA; | |
290 | else | |
291 | *args->resultp = SECT_OFF_BSS; | |
211b564e | 292 | *args->bfd_sect = sect; |
a81ce07d JK |
293 | } |
294 | } | |
295 | ||
296 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
297 | static int | |
a367db89 JK |
298 | secnum_to_section (secnum, objfile) |
299 | int secnum; | |
a81ce07d JK |
300 | struct objfile *objfile; |
301 | { | |
302 | int off = SECT_OFF_TEXT; | |
211b564e | 303 | asection *sect = NULL; |
a81ce07d | 304 | struct find_targ_sec_arg args; |
a367db89 | 305 | args.targ_index = secnum; |
a81ce07d | 306 | args.resultp = &off; |
211b564e | 307 | args.bfd_sect = § |
a81ce07d JK |
308 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
309 | return off; | |
310 | } | |
211b564e PS |
311 | |
312 | /* Return the BFD section that CS points to. */ | |
313 | static asection * | |
314 | secnum_to_bfd_section (secnum, objfile) | |
315 | int secnum; | |
316 | struct objfile *objfile; | |
317 | { | |
318 | int off = SECT_OFF_TEXT; | |
319 | asection *sect = NULL; | |
320 | struct find_targ_sec_arg args; | |
321 | args.targ_index = secnum; | |
322 | args.resultp = &off; | |
323 | args.bfd_sect = § | |
324 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
325 | return sect; | |
326 | } | |
a81ce07d | 327 | \f |
e38e0312 JG |
328 | /* add a given stab string into given stab vector. */ |
329 | ||
6e0949ae FF |
330 | #if 0 |
331 | ||
e38e0312 JG |
332 | static void |
333 | add_stab_to_list (stabname, stabvector) | |
334 | char *stabname; | |
335 | struct pending_stabs **stabvector; | |
336 | { | |
337 | if ( *stabvector == NULL) { | |
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 | (*stabvector)->length += INITIAL_STABVECTOR_LENGTH; | |
346 | *stabvector = (struct pending_stabs *) | |
1ab3bf1b | 347 | xrealloc ((char *) *stabvector, sizeof (struct pending_stabs) + |
e38e0312 JG |
348 | (*stabvector)->length * sizeof (char*)); |
349 | } | |
350 | (*stabvector)->stab [(*stabvector)->count++] = stabname; | |
351 | } | |
6e0949ae FF |
352 | |
353 | #endif | |
354 | ||
194d98c6 JK |
355 | \f |
356 | /* Linenos are processed on a file-by-file basis. | |
357 | ||
358 | Two reasons: | |
359 | ||
360 | 1) xlc (IBM's native c compiler) postpones static function code | |
361 | emission to the end of a compilation unit. This way it can | |
362 | determine if those functions (statics) are needed or not, and | |
363 | can do some garbage collection (I think). This makes line | |
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 | |
383 | above table is not sorted on line numbers. And that sort | |
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. | |
e38e0312 | 391 | |
194d98c6 | 392 | arrange_linetable() will do this sorting. |
e38e0312 | 393 | |
194d98c6 | 394 | 2) aix symbol table might look like: |
818de002 | 395 | |
194d98c6 JK |
396 | c_file // beginning of a new file |
397 | .bi // beginning of include file | |
398 | .ei // end of include file | |
399 | .bi | |
400 | .ei | |
818de002 | 401 | |
194d98c6 JK |
402 | basically, .bi/.ei pairs do not necessarily encapsulate |
403 | their scope. They need to be recorded, and processed later | |
404 | on when we come the end of the compilation unit. | |
405 | Include table (inclTable) and process_linenos() handle | |
406 | that. */ | |
818de002 PB |
407 | |
408 | /* compare line table entry addresses. */ | |
409 | ||
194d98c6 | 410 | static int |
6e0949ae FF |
411 | compare_lte (lte1p, lte2p) |
412 | const void *lte1p; | |
413 | const void *lte2p; | |
818de002 | 414 | { |
6e0949ae FF |
415 | struct linetable_entry *lte1 = (struct linetable_entry *) lte1p; |
416 | struct linetable_entry *lte2 = (struct linetable_entry *) lte2p; | |
818de002 PB |
417 | return lte1->pc - lte2->pc; |
418 | } | |
419 | ||
3f37b696 FF |
420 | /* Given a line table with function entries are marked, arrange its functions |
421 | in ascending order and strip off function entry markers and return it in | |
818de002 | 422 | a newly created table. If the old one is good enough, return the old one. */ |
c438b3af JK |
423 | /* FIXME: I think all this stuff can be replaced by just passing |
424 | sort_linevec = 1 to end_symtab. */ | |
818de002 PB |
425 | |
426 | static struct linetable * | |
427 | arrange_linetable (oldLineTb) | |
a367db89 | 428 | struct linetable *oldLineTb; /* old linetable */ |
818de002 PB |
429 | { |
430 | int ii, jj, | |
431 | newline, /* new line count */ | |
432 | function_count; /* # of functions */ | |
433 | ||
434 | struct linetable_entry *fentry; /* function entry vector */ | |
435 | int fentry_size; /* # of function entries */ | |
436 | struct linetable *newLineTb; /* new line table */ | |
437 | ||
438 | #define NUM_OF_FUNCTIONS 20 | |
439 | ||
440 | fentry_size = NUM_OF_FUNCTIONS; | |
441 | fentry = (struct linetable_entry*) | |
ecfd2b60 | 442 | xmalloc (fentry_size * sizeof (struct linetable_entry)); |
818de002 PB |
443 | |
444 | for (function_count=0, ii=0; ii <oldLineTb->nitems; ++ii) { | |
445 | ||
446 | if (oldLineTb->item[ii].line == 0) { /* function entry found. */ | |
447 | ||
448 | if (function_count >= fentry_size) { /* make sure you have room. */ | |
449 | fentry_size *= 2; | |
450 | fentry = (struct linetable_entry*) | |
ecfd2b60 | 451 | xrealloc (fentry, fentry_size * sizeof (struct linetable_entry)); |
818de002 PB |
452 | } |
453 | fentry[function_count].line = ii; | |
454 | fentry[function_count].pc = oldLineTb->item[ii].pc; | |
455 | ++function_count; | |
456 | } | |
457 | } | |
458 | ||
459 | if (function_count == 0) { | |
460 | free (fentry); | |
461 | return oldLineTb; | |
462 | } | |
463 | else if (function_count > 1) | |
464 | qsort (fentry, function_count, sizeof(struct linetable_entry), compare_lte); | |
465 | ||
466 | /* allocate a new line table. */ | |
ecfd2b60 JK |
467 | newLineTb = (struct linetable *) |
468 | xmalloc | |
469 | (sizeof (struct linetable) + | |
470 | (oldLineTb->nitems - function_count) * sizeof (struct linetable_entry)); | |
818de002 PB |
471 | |
472 | /* if line table does not start with a function beginning, copy up until | |
473 | a function begin. */ | |
474 | ||
475 | newline = 0; | |
476 | if (oldLineTb->item[0].line != 0) | |
477 | for (newline=0; | |
478 | newline < oldLineTb->nitems && oldLineTb->item[newline].line; ++newline) | |
479 | newLineTb->item[newline] = oldLineTb->item[newline]; | |
480 | ||
481 | /* Now copy function lines one by one. */ | |
482 | ||
483 | for (ii=0; ii < function_count; ++ii) { | |
484 | for (jj = fentry[ii].line + 1; | |
485 | jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0; | |
486 | ++jj, ++newline) | |
487 | newLineTb->item[newline] = oldLineTb->item[jj]; | |
488 | } | |
489 | free (fentry); | |
490 | newLineTb->nitems = oldLineTb->nitems - function_count; | |
491 | return newLineTb; | |
492 | } | |
493 | ||
818de002 PB |
494 | /* include file support: C_BINCL/C_EINCL pairs will be kept in the |
495 | following `IncludeChain'. At the end of each symtab (end_symtab), | |
496 | we will determine if we should create additional symtab's to | |
497 | represent if (the include files. */ | |
498 | ||
499 | ||
500 | typedef struct _inclTable { | |
501 | char *name; /* include filename */ | |
2aefe6e4 JK |
502 | |
503 | /* Offsets to the line table. end points to the last entry which is | |
504 | part of this include file. */ | |
505 | int begin, end; | |
506 | ||
818de002 PB |
507 | struct subfile *subfile; |
508 | unsigned funStartLine; /* start line # of its function */ | |
509 | } InclTable; | |
510 | ||
511 | #define INITIAL_INCLUDE_TABLE_LENGTH 20 | |
512 | static InclTable *inclTable; /* global include table */ | |
513 | static int inclIndx; /* last entry to table */ | |
514 | static int inclLength; /* table length */ | |
515 | static int inclDepth; /* nested include depth */ | |
516 | ||
7f4c8595 | 517 | static void allocate_include_entry PARAMS ((void)); |
818de002 PB |
518 | |
519 | static void | |
520 | record_include_begin (cs) | |
521 | struct coff_symbol *cs; | |
522 | { | |
818de002 | 523 | if (inclDepth) |
486b440e JK |
524 | { |
525 | /* In xcoff, we assume include files cannot be nested (not in .c files | |
526 | of course, but in corresponding .s files.). */ | |
527 | ||
67240bb8 JK |
528 | /* This can happen with old versions of GCC. |
529 | GCC 2.3.3-930426 does not exhibit this on a test case which | |
530 | a user said produced the message for him. */ | |
b646b438 | 531 | static struct complaint msg = {"Nested C_BINCL symbols", 0, 0}; |
486b440e JK |
532 | complain (&msg); |
533 | } | |
818de002 PB |
534 | ++inclDepth; |
535 | ||
7f4c8595 | 536 | allocate_include_entry (); |
818de002 PB |
537 | |
538 | inclTable [inclIndx].name = cs->c_name; | |
539 | inclTable [inclIndx].begin = cs->c_value; | |
540 | } | |
541 | ||
818de002 PB |
542 | static void |
543 | record_include_end (cs) | |
544 | struct coff_symbol *cs; | |
545 | { | |
546 | InclTable *pTbl; | |
547 | ||
548 | if (inclDepth == 0) | |
486b440e | 549 | { |
b646b438 | 550 | static struct complaint msg = {"Mismatched C_BINCL/C_EINCL pair", 0, 0}; |
486b440e JK |
551 | complain (&msg); |
552 | } | |
818de002 | 553 | |
7f4c8595 SS |
554 | allocate_include_entry (); |
555 | ||
818de002 PB |
556 | pTbl = &inclTable [inclIndx]; |
557 | pTbl->end = cs->c_value; | |
558 | ||
559 | --inclDepth; | |
560 | ++inclIndx; | |
561 | } | |
562 | ||
7f4c8595 SS |
563 | static void |
564 | allocate_include_entry () | |
565 | { | |
566 | if (inclTable == NULL) | |
567 | { | |
568 | inclTable = (InclTable *) | |
569 | xmalloc (sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
570 | memset (inclTable, | |
571 | '\0', sizeof (InclTable) * INITIAL_INCLUDE_TABLE_LENGTH); | |
572 | inclLength = INITIAL_INCLUDE_TABLE_LENGTH; | |
573 | inclIndx = 0; | |
574 | } | |
575 | else if (inclIndx >= inclLength) | |
576 | { | |
577 | inclLength += INITIAL_INCLUDE_TABLE_LENGTH; | |
578 | inclTable = (InclTable *) | |
579 | xrealloc (inclTable, sizeof (InclTable) * inclLength); | |
580 | memset (inclTable + inclLength - INITIAL_INCLUDE_TABLE_LENGTH, | |
581 | '\0', sizeof (InclTable)*INITIAL_INCLUDE_TABLE_LENGTH); | |
582 | } | |
583 | } | |
818de002 | 584 | |
a367db89 JK |
585 | /* Global variable to pass the psymtab down to all the routines involved |
586 | in psymtab to symtab processing. */ | |
587 | static struct partial_symtab *this_symtab_psymtab; | |
588 | ||
7f4c8595 SS |
589 | /* given the start and end addresses of a compilation unit (or a csect, |
590 | at times) process its lines and create appropriate line vectors. */ | |
818de002 PB |
591 | |
592 | static void | |
593 | process_linenos (start, end) | |
a367db89 | 594 | CORE_ADDR start, end; |
818de002 | 595 | { |
818de002 | 596 | int offset, ii; |
a367db89 JK |
597 | file_ptr max_offset = |
598 | ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private) | |
599 | ->max_lineno_offset; | |
818de002 | 600 | |
5cba5d26 JK |
601 | /* subfile structure for the main compilation unit. */ |
602 | struct subfile main_subfile; | |
818de002 | 603 | |
5cba5d26 JK |
604 | /* In the main source file, any time we see a function entry, we |
605 | reset this variable to function's absolute starting line number. | |
606 | All the following line numbers in the function are relative to | |
607 | this, and we record absolute line numbers in record_line(). */ | |
818de002 | 608 | |
df1e1074 | 609 | unsigned int main_source_baseline = 0; |
818de002 | 610 | |
818de002 | 611 | unsigned *firstLine; |
818de002 | 612 | |
a367db89 JK |
613 | offset = |
614 | ((struct symloc *)this_symtab_psymtab->read_symtab_private)->lineno_off; | |
615 | if (offset == 0) | |
818de002 PB |
616 | goto return_after_cleanup; |
617 | ||
4ed97c9a | 618 | memset (&main_subfile, '\0', sizeof (main_subfile)); |
818de002 PB |
619 | |
620 | if (inclIndx == 0) | |
556f3d90 PB |
621 | /* All source lines were in the main source file. None in include files. */ |
622 | ||
818de002 PB |
623 | enter_line_range (&main_subfile, offset, 0, start, end, |
624 | &main_source_baseline); | |
625 | ||
5cba5d26 JK |
626 | else |
627 | { | |
628 | /* There was source with line numbers in include files. */ | |
629 | main_source_baseline = 0; | |
630 | for (ii=0; ii < inclIndx; ++ii) | |
631 | { | |
632 | struct subfile *tmpSubfile; | |
818de002 | 633 | |
5cba5d26 JK |
634 | /* If there is main file source before include file, enter it. */ |
635 | if (offset < inclTable[ii].begin) | |
636 | { | |
637 | enter_line_range | |
638 | (&main_subfile, offset, inclTable[ii].begin - LINESZ, | |
639 | start, 0, &main_source_baseline); | |
640 | } | |
818de002 | 641 | |
5cba5d26 | 642 | /* Have a new subfile for the include file. */ |
818de002 | 643 | |
5cba5d26 JK |
644 | tmpSubfile = inclTable[ii].subfile = |
645 | (struct subfile *) xmalloc (sizeof (struct subfile)); | |
818de002 | 646 | |
5cba5d26 JK |
647 | memset (tmpSubfile, '\0', sizeof (struct subfile)); |
648 | firstLine = &(inclTable[ii].funStartLine); | |
818de002 | 649 | |
5cba5d26 JK |
650 | /* Enter include file's lines now. */ |
651 | enter_line_range (tmpSubfile, inclTable[ii].begin, | |
652 | inclTable[ii].end, start, 0, firstLine); | |
818de002 | 653 | |
d2fee216 | 654 | if (offset <= inclTable[ii].end) |
fc564b18 | 655 | offset = inclTable[ii].end + LINESZ; |
5cba5d26 | 656 | } |
818de002 | 657 | |
5cba5d26 JK |
658 | /* All the include files' line have been processed at this point. Now, |
659 | enter remaining lines of the main file, if any left. */ | |
a367db89 | 660 | if (offset < max_offset + 1 - LINESZ) |
5cba5d26 JK |
661 | { |
662 | enter_line_range (&main_subfile, offset, 0, start, end, | |
663 | &main_source_baseline); | |
664 | } | |
818de002 PB |
665 | } |
666 | ||
5cba5d26 JK |
667 | /* Process main file's line numbers. */ |
668 | if (main_subfile.line_vector) | |
669 | { | |
670 | struct linetable *lineTb, *lv; | |
818de002 | 671 | |
5cba5d26 | 672 | lv = main_subfile.line_vector; |
818de002 | 673 | |
5cba5d26 JK |
674 | /* Line numbers are not necessarily ordered. xlc compilation will |
675 | put static function to the end. */ | |
818de002 | 676 | |
5cba5d26 JK |
677 | lineTb = arrange_linetable (lv); |
678 | if (lv == lineTb) | |
679 | { | |
680 | current_subfile->line_vector = (struct linetable *) | |
681 | xrealloc (lv, (sizeof (struct linetable) | |
682 | + lv->nitems * sizeof (struct linetable_entry))); | |
683 | } | |
684 | else | |
685 | { | |
686 | free (lv); | |
687 | current_subfile->line_vector = lineTb; | |
688 | } | |
818de002 | 689 | |
5cba5d26 JK |
690 | current_subfile->line_vector_length = |
691 | current_subfile->line_vector->nitems; | |
818de002 | 692 | } |
818de002 | 693 | |
5cba5d26 | 694 | /* Now, process included files' line numbers. */ |
818de002 | 695 | |
5cba5d26 JK |
696 | for (ii=0; ii < inclIndx; ++ii) |
697 | { | |
698 | if ((inclTable[ii].subfile)->line_vector) /* Useless if!!! FIXMEmgo */ | |
699 | { | |
700 | struct linetable *lineTb, *lv; | |
818de002 | 701 | |
5cba5d26 | 702 | lv = (inclTable[ii].subfile)->line_vector; |
818de002 | 703 | |
5cba5d26 JK |
704 | /* Line numbers are not necessarily ordered. xlc compilation will |
705 | put static function to the end. */ | |
818de002 | 706 | |
5cba5d26 | 707 | lineTb = arrange_linetable (lv); |
818de002 | 708 | |
5cba5d26 | 709 | push_subfile (); |
818de002 | 710 | |
5cba5d26 JK |
711 | /* For the same include file, we might want to have more than one |
712 | subfile. This happens if we have something like: | |
818de002 | 713 | |
818de002 PB |
714 | ...... |
715 | #include "foo.h" | |
716 | ...... | |
717 | #include "foo.h" | |
718 | ...... | |
719 | ||
5cba5d26 JK |
720 | while foo.h including code in it. (stupid but possible) |
721 | Since start_subfile() looks at the name and uses an | |
722 | existing one if finds, we need to provide a fake name and | |
723 | fool it. */ | |
724 | ||
725 | #if 0 | |
726 | start_subfile (inclTable[ii].name, (char*)0); | |
727 | #else | |
728 | { | |
729 | /* Pick a fake name that will produce the same results as this | |
730 | one when passed to deduce_language_from_filename. Kludge on | |
731 | top of kludge. */ | |
732 | char *fakename = strrchr (inclTable[ii].name, '.'); | |
733 | if (fakename == NULL) | |
734 | fakename = " ?"; | |
735 | start_subfile (fakename, (char*)0); | |
736 | free (current_subfile->name); | |
737 | } | |
738 | current_subfile->name = strdup (inclTable[ii].name); | |
739 | #endif | |
818de002 | 740 | |
5cba5d26 JK |
741 | if (lv == lineTb) |
742 | { | |
743 | current_subfile->line_vector = | |
744 | (struct linetable *) xrealloc | |
745 | (lv, (sizeof (struct linetable) | |
818de002 PB |
746 | + lv->nitems * sizeof (struct linetable_entry))); |
747 | ||
5cba5d26 JK |
748 | } |
749 | else | |
750 | { | |
751 | free (lv); | |
752 | current_subfile->line_vector = lineTb; | |
753 | } | |
818de002 | 754 | |
5cba5d26 JK |
755 | current_subfile->line_vector_length = |
756 | current_subfile->line_vector->nitems; | |
757 | start_subfile (pop_subfile (), (char*)0); | |
758 | } | |
818de002 | 759 | } |
818de002 | 760 | |
5cba5d26 | 761 | return_after_cleanup: |
818de002 | 762 | |
5cba5d26 | 763 | /* We don't want to keep alloc/free'ing the global include file table. */ |
818de002 PB |
764 | inclIndx = 0; |
765 | ||
5cba5d26 | 766 | /* Start with a fresh subfile structure for the next file. */ |
4ed97c9a | 767 | memset (&main_subfile, '\0', sizeof (struct subfile)); |
818de002 PB |
768 | } |
769 | ||
770 | void | |
771 | aix_process_linenos () | |
772 | { | |
773 | /* process line numbers and enter them into line vector */ | |
774 | process_linenos (last_source_start_addr, cur_src_end_addr); | |
775 | } | |
776 | ||
777 | ||
e38e0312 JG |
778 | /* Enter a given range of lines into the line vector. |
779 | can be called in the following two ways: | |
818de002 | 780 | enter_line_range (subfile, beginoffset, endoffset, startaddr, 0, firstLine) or |
2aefe6e4 JK |
781 | enter_line_range (subfile, beginoffset, 0, startaddr, endaddr, firstLine) |
782 | ||
783 | endoffset points to the last line table entry that we should pay | |
784 | attention to. */ | |
e38e0312 JG |
785 | |
786 | static void | |
a367db89 JK |
787 | enter_line_range (subfile, beginoffset, endoffset, startaddr, endaddr, |
788 | firstLine) | |
789 | struct subfile *subfile; | |
790 | unsigned beginoffset, endoffset; /* offsets to line table */ | |
791 | CORE_ADDR startaddr, endaddr; | |
792 | unsigned *firstLine; | |
e38e0312 | 793 | { |
a367db89 JK |
794 | unsigned int curoffset; |
795 | CORE_ADDR addr; | |
796 | struct external_lineno ext_lnno; | |
797 | struct internal_lineno int_lnno; | |
798 | unsigned int limit_offset; | |
799 | bfd *abfd; | |
818de002 | 800 | |
a367db89 JK |
801 | if (endoffset == 0 && startaddr == 0 && endaddr == 0) |
802 | return; | |
803 | curoffset = beginoffset; | |
804 | limit_offset = | |
805 | ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private) | |
806 | ->max_lineno_offset; | |
e38e0312 | 807 | |
a367db89 | 808 | if (endoffset != 0) |
2aefe6e4 | 809 | { |
a367db89 JK |
810 | if (endoffset >= limit_offset) |
811 | { | |
812 | static struct complaint msg = | |
813 | {"Bad line table offset in C_EINCL directive", 0, 0}; | |
814 | complain (&msg); | |
815 | return; | |
816 | } | |
817 | limit_offset = endoffset; | |
2aefe6e4 | 818 | } |
a367db89 JK |
819 | else |
820 | limit_offset -= 1; | |
821 | abfd = this_symtab_psymtab->objfile->obfd; | |
e38e0312 | 822 | |
a367db89 JK |
823 | while (curoffset <= limit_offset) |
824 | { | |
825 | bfd_seek (abfd, curoffset, SEEK_SET); | |
826 | bfd_read (&ext_lnno, sizeof (struct external_lineno), 1, abfd); | |
827 | bfd_coff_swap_lineno_in (abfd, &ext_lnno, &int_lnno); | |
e38e0312 | 828 | |
a367db89 JK |
829 | /* Find the address this line represents. */ |
830 | addr = (int_lnno.l_lnno | |
831 | ? int_lnno.l_addr.l_paddr | |
832 | : read_symbol_nvalue (int_lnno.l_addr.l_symndx)); | |
833 | addr += ANOFFSET (this_symtab_psymtab->objfile->section_offsets, | |
834 | SECT_OFF_TEXT); | |
e38e0312 | 835 | |
a367db89 JK |
836 | if (addr < startaddr || (endaddr && addr >= endaddr)) |
837 | return; | |
e38e0312 | 838 | |
a367db89 JK |
839 | if (int_lnno.l_lnno == 0) |
840 | { | |
841 | *firstLine = read_symbol_lineno (int_lnno.l_addr.l_symndx); | |
842 | record_line (subfile, 0, addr); | |
843 | --(*firstLine); | |
844 | } | |
845 | else | |
846 | record_line (subfile, *firstLine + int_lnno.l_lnno, addr); | |
847 | curoffset += LINESZ; | |
e38e0312 | 848 | } |
818de002 PB |
849 | } |
850 | ||
818de002 | 851 | |
e38e0312 JG |
852 | /* Save the vital information for use when closing off the current file. |
853 | NAME is the file name the symbols came from, START_ADDR is the first | |
854 | text address for the file, and SIZE is the number of bytes of text. */ | |
855 | ||
856 | #define complete_symtab(name, start_addr) { \ | |
857 | last_source_file = savestring (name, strlen (name)); \ | |
818de002 | 858 | last_source_start_addr = start_addr; \ |
e38e0312 JG |
859 | } |
860 | ||
861 | ||
862 | /* Refill the symbol table input buffer | |
863 | and set the variables that control fetching entries from it. | |
864 | Reports an error if no data available. | |
865 | This function can read past the end of the symbol table | |
866 | (into the string table) but this does no harm. */ | |
867 | ||
868 | /* Reading symbol table has to be fast! Keep the followings as macros, rather | |
869 | than functions. */ | |
870 | ||
a367db89 | 871 | #define RECORD_MINIMAL_SYMBOL(NAME, ADDR, TYPE, SECTION, OBJFILE) \ |
e38e0312 JG |
872 | { \ |
873 | char *namestr; \ | |
a81ce07d JK |
874 | namestr = (NAME); \ |
875 | if (namestr[0] == '.') ++namestr; \ | |
3c02636b | 876 | prim_record_minimal_symbol_and_info (namestr, (ADDR), (TYPE), \ |
86fdcdaf | 877 | (char *)NULL, (SECTION), (asection *)NULL, (OBJFILE)); \ |
818de002 | 878 | misc_func_recorded = 1; \ |
e38e0312 JG |
879 | } |
880 | ||
881 | ||
9b280a7f | 882 | /* xcoff has static blocks marked in `.bs', `.es' pairs. They cannot be |
e38e0312 JG |
883 | nested. At any given time, a symbol can only be in one static block. |
884 | This is the base address of current static block, zero if non exists. */ | |
885 | ||
886 | static int static_block_base = 0; | |
887 | ||
3c02636b JK |
888 | /* Section number for the current static block. */ |
889 | ||
890 | static int static_block_section = -1; | |
891 | ||
e38e0312 JG |
892 | /* true if space for symbol name has been allocated. */ |
893 | ||
894 | static int symname_alloced = 0; | |
895 | ||
34d265dc JK |
896 | /* Next symbol to read. Pointer into raw seething symbol table. */ |
897 | ||
898 | static char *raw_symbol; | |
899 | ||
900 | /* This is the function which stabsread.c calls to get symbol | |
901 | continuations. */ | |
6e0949ae | 902 | |
34d265dc | 903 | static char * |
2dd30c72 FF |
904 | xcoff_next_symbol_text (objfile) |
905 | struct objfile *objfile; | |
34d265dc JK |
906 | { |
907 | struct internal_syment symbol; | |
908 | static struct complaint msg = | |
909 | {"Unexpected symbol continuation", 0, 0}; | |
963dbabe | 910 | char *retval; |
2dd30c72 FF |
911 | /* FIXME: is this the same as the passed arg? */ |
912 | objfile = this_symtab_psymtab->objfile; | |
34d265dc | 913 | |
a367db89 | 914 | bfd_coff_swap_sym_in (objfile->obfd, raw_symbol, &symbol); |
afbdbbd7 | 915 | if (symbol.n_zeroes) |
963dbabe JK |
916 | { |
917 | complain (&msg); | |
918 | ||
919 | /* Return something which points to '\0' and hope the symbol reading | |
920 | code does something reasonable. */ | |
921 | retval = ""; | |
922 | } | |
afbdbbd7 | 923 | else if (symbol.n_sclass & 0x80) |
963dbabe | 924 | { |
a367db89 JK |
925 | retval = |
926 | ((struct coff_symfile_info *)objfile->sym_private)->debugsec | |
927 | + symbol.n_offset; | |
928 | raw_symbol += | |
929 | coff_data (objfile->obfd)->local_symesz; | |
963dbabe JK |
930 | ++symnum; |
931 | } | |
34d265dc | 932 | else |
963dbabe JK |
933 | { |
934 | complain (&msg); | |
935 | ||
936 | /* Return something which points to '\0' and hope the symbol reading | |
937 | code does something reasonable. */ | |
938 | retval = ""; | |
939 | } | |
940 | return retval; | |
34d265dc JK |
941 | } |
942 | ||
a367db89 | 943 | /* Read symbols for a given partial symbol table. */ |
e38e0312 | 944 | |
1ab3bf1b | 945 | static void |
a367db89 JK |
946 | read_xcoff_symtab (pst) |
947 | struct partial_symtab *pst; | |
e38e0312 | 948 | { |
a367db89 | 949 | struct objfile *objfile = pst->objfile; |
e38e0312 | 950 | bfd *abfd = objfile->obfd; |
e38e0312 | 951 | char *raw_auxptr; /* Pointer to first raw aux entry for sym */ |
a367db89 JK |
952 | char *strtbl = ((struct coff_symfile_info *)objfile->sym_private)->strtbl; |
953 | char *debugsec = | |
954 | ((struct coff_symfile_info *)objfile->sym_private)->debugsec; | |
818de002 | 955 | |
e38e0312 | 956 | struct internal_syment symbol[1]; |
6657a0c7 | 957 | union internal_auxent main_aux; |
e38e0312 JG |
958 | struct coff_symbol cs[1]; |
959 | CORE_ADDR file_start_addr = 0; | |
960 | CORE_ADDR file_end_addr = 0; | |
961 | ||
962 | int next_file_symnum = -1; | |
a367db89 | 963 | unsigned int max_symnum; |
e38e0312 JG |
964 | int just_started = 1; |
965 | int depth = 0; | |
df1e1074 | 966 | int fcn_start_addr = 0; |
e38e0312 | 967 | |
1eeba686 PB |
968 | struct coff_symbol fcn_stab_saved; |
969 | ||
e38e0312 JG |
970 | /* fcn_cs_saved is global because process_xcoff_symbol needs it. */ |
971 | union internal_auxent fcn_aux_saved; | |
972 | struct context_stack *new; | |
973 | ||
974 | char *filestring = " _start_ "; /* Name of the current file. */ | |
818de002 PB |
975 | |
976 | char *last_csect_name; /* last seen csect's name and value */ | |
977 | CORE_ADDR last_csect_val; | |
3c02636b | 978 | int last_csect_sec; |
e38e0312 | 979 | |
a367db89 | 980 | this_symtab_psymtab = pst; |
1ab3bf1b | 981 | |
a81ce07d JK |
982 | /* Get the appropriate COFF "constants" related to the file we're |
983 | handling. */ | |
e38e0312 JG |
984 | local_symesz = coff_data (abfd)->local_symesz; |
985 | ||
d07734e3 | 986 | last_source_file = NULL; |
818de002 PB |
987 | last_csect_name = 0; |
988 | last_csect_val = 0; | |
e38e0312 | 989 | |
d07734e3 | 990 | start_stabs (); |
e38e0312 | 991 | start_symtab (filestring, (char *)NULL, file_start_addr); |
609fd033 | 992 | record_debugformat ("XCOFF"); |
a367db89 JK |
993 | symnum = ((struct symloc *)pst->read_symtab_private)->first_symnum; |
994 | max_symnum = | |
995 | symnum + ((struct symloc *)pst->read_symtab_private)->numsyms; | |
e38e0312 JG |
996 | first_object_file_end = 0; |
997 | ||
a367db89 JK |
998 | raw_symbol = |
999 | ((struct coff_symfile_info *) objfile->sym_private)->symtbl | |
1000 | + symnum * local_symesz; | |
34d265dc | 1001 | |
a367db89 | 1002 | while (symnum < max_symnum) |
a81ce07d | 1003 | { |
e38e0312 | 1004 | |
a81ce07d | 1005 | QUIT; /* make this command interruptable. */ |
e38e0312 | 1006 | |
a81ce07d JK |
1007 | /* READ_ONE_SYMBOL (symbol, cs, symname_alloced); */ |
1008 | /* read one symbol into `cs' structure. After processing the | |
1009 | whole symbol table, only string table will be kept in memory, | |
1010 | symbol table and debug section of xcoff will be freed. Thus | |
1011 | we can mark symbols with names in string table as | |
1012 | `alloced'. */ | |
1013 | { | |
1014 | int ii; | |
1015 | ||
1016 | /* Swap and align the symbol into a reasonable C structure. */ | |
1017 | bfd_coff_swap_sym_in (abfd, raw_symbol, symbol); | |
1018 | ||
1019 | cs->c_symnum = symnum; | |
1020 | cs->c_naux = symbol->n_numaux; | |
1021 | if (symbol->n_zeroes) | |
786757a9 | 1022 | { |
a81ce07d JK |
1023 | symname_alloced = 0; |
1024 | /* We must use the original, unswapped, name here so the name field | |
1025 | pointed to by cs->c_name will persist throughout xcoffread. If | |
1026 | we use the new field, it gets overwritten for each symbol. */ | |
1027 | cs->c_name = ((struct external_syment *)raw_symbol)->e.e_name; | |
1028 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
1029 | '\0'-terminated. */ | |
1030 | if (cs->c_name[E_SYMNMLEN - 1] != '\0') | |
1031 | { | |
1032 | char *p; | |
1033 | p = obstack_alloc (&objfile->symbol_obstack, E_SYMNMLEN + 1); | |
1034 | strncpy (p, cs->c_name, E_SYMNMLEN); | |
1035 | p[E_SYMNMLEN] = '\0'; | |
1036 | cs->c_name = p; | |
1037 | symname_alloced = 1; | |
1038 | } | |
1039 | } | |
1040 | else if (symbol->n_sclass & 0x80) | |
1041 | { | |
1042 | cs->c_name = debugsec + symbol->n_offset; | |
1043 | symname_alloced = 0; | |
1044 | } | |
1045 | else | |
1046 | { | |
1047 | /* in string table */ | |
1048 | cs->c_name = strtbl + (int)symbol->n_offset; | |
786757a9 JK |
1049 | symname_alloced = 1; |
1050 | } | |
a81ce07d JK |
1051 | cs->c_value = symbol->n_value; |
1052 | cs->c_sclass = symbol->n_sclass; | |
1053 | cs->c_secnum = symbol->n_scnum; | |
1054 | cs->c_type = (unsigned)symbol->n_type; | |
e38e0312 | 1055 | |
a81ce07d JK |
1056 | raw_symbol += coff_data (abfd)->local_symesz; |
1057 | ++symnum; | |
e38e0312 | 1058 | |
a81ce07d JK |
1059 | /* Save addr of first aux entry. */ |
1060 | raw_auxptr = raw_symbol; | |
e38e0312 | 1061 | |
a81ce07d JK |
1062 | /* Skip all the auxents associated with this symbol. */ |
1063 | for (ii = symbol->n_numaux; ii; --ii) | |
1064 | { | |
1065 | raw_symbol += coff_data (abfd)->local_auxesz; | |
1066 | ++symnum; | |
1067 | } | |
e38e0312 | 1068 | } |
e38e0312 | 1069 | |
a81ce07d JK |
1070 | /* if symbol name starts with ".$" or "$", ignore it. */ |
1071 | if (cs->c_name[0] == '$' | |
1072 | || (cs->c_name[1] == '$' && cs->c_name[0] == '.')) | |
1073 | continue; | |
e38e0312 | 1074 | |
a81ce07d | 1075 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) |
d07734e3 | 1076 | { |
a81ce07d JK |
1077 | if (last_source_file) |
1078 | { | |
a367db89 | 1079 | pst->symtab = |
436d4143 | 1080 | end_symtab (cur_src_end_addr, objfile, SECT_OFF_TEXT); |
a81ce07d JK |
1081 | end_stabs (); |
1082 | } | |
e38e0312 | 1083 | |
a81ce07d JK |
1084 | start_stabs (); |
1085 | start_symtab ("_globals_", (char *)NULL, (CORE_ADDR)0); | |
609fd033 | 1086 | record_debugformat ("XCOFF"); |
a81ce07d JK |
1087 | cur_src_end_addr = first_object_file_end; |
1088 | /* done with all files, everything from here on is globals */ | |
1089 | } | |
e38e0312 | 1090 | |
a81ce07d JK |
1091 | /* if explicitly specified as a function, treat is as one. */ |
1092 | if (ISFCN(cs->c_type) && cs->c_sclass != C_TPDEF) | |
1093 | { | |
1094 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1095 | 0, cs->c_naux, &main_aux); | |
1096 | goto function_entry_point; | |
1097 | } | |
e38e0312 | 1098 | |
a81ce07d JK |
1099 | if ((cs->c_sclass == C_EXT || cs->c_sclass == C_HIDEXT) |
1100 | && cs->c_naux == 1) | |
1101 | { | |
1102 | /* Dealing with a symbol with a csect entry. */ | |
e38e0312 | 1103 | |
a81ce07d JK |
1104 | #define CSECT(PP) ((PP)->x_csect) |
1105 | #define CSECT_LEN(PP) (CSECT(PP).x_scnlen.l) | |
1106 | #define CSECT_ALIGN(PP) (SMTYP_ALIGN(CSECT(PP).x_smtyp)) | |
1107 | #define CSECT_SMTYP(PP) (SMTYP_SMTYP(CSECT(PP).x_smtyp)) | |
1108 | #define CSECT_SCLAS(PP) (CSECT(PP).x_smclas) | |
e38e0312 | 1109 | |
a81ce07d JK |
1110 | /* Convert the auxent to something we can access. */ |
1111 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1112 | 0, cs->c_naux, &main_aux); | |
e38e0312 | 1113 | |
a81ce07d JK |
1114 | switch (CSECT_SMTYP (&main_aux)) |
1115 | { | |
e38e0312 | 1116 | |
a81ce07d JK |
1117 | case XTY_ER: |
1118 | /* Ignore all external references. */ | |
1119 | continue; | |
e38e0312 | 1120 | |
a81ce07d JK |
1121 | case XTY_SD: |
1122 | /* A section description. */ | |
e38e0312 | 1123 | { |
a81ce07d JK |
1124 | switch (CSECT_SCLAS (&main_aux)) |
1125 | { | |
1126 | ||
1127 | case XMC_PR: | |
1128 | { | |
1129 | ||
1130 | /* A program csect is seen. We have to allocate one | |
1131 | symbol table for each program csect. Normally gdb | |
1132 | prefers one symtab for each source file. In case | |
1133 | of AIX, one source file might include more than one | |
1134 | [PR] csect, and they don't have to be adjacent in | |
1135 | terms of the space they occupy in memory. Thus, one | |
1136 | single source file might get fragmented in the | |
1137 | memory and gdb's file start and end address | |
1138 | approach does not work! GCC (and I think xlc) seem | |
1139 | to put all the code in the unnamed program csect. */ | |
1140 | ||
1141 | if (last_csect_name) | |
1142 | { | |
a81ce07d JK |
1143 | complete_symtab (filestring, file_start_addr); |
1144 | cur_src_end_addr = file_end_addr; | |
436d4143 | 1145 | end_symtab (file_end_addr, objfile, SECT_OFF_TEXT); |
a81ce07d JK |
1146 | end_stabs (); |
1147 | start_stabs (); | |
1148 | /* Give all csects for this source file the same | |
1149 | name. */ | |
1150 | start_symtab (filestring, NULL, (CORE_ADDR)0); | |
609fd033 | 1151 | record_debugformat ("XCOFF"); |
a81ce07d JK |
1152 | } |
1153 | ||
1154 | /* If this is the very first csect seen, | |
1155 | basically `__start'. */ | |
1156 | if (just_started) | |
1157 | { | |
1158 | first_object_file_end | |
1159 | = cs->c_value + CSECT_LEN (&main_aux); | |
1160 | just_started = 0; | |
1161 | } | |
1162 | ||
a367db89 JK |
1163 | file_start_addr = |
1164 | cs->c_value + ANOFFSET (objfile->section_offsets, | |
1165 | SECT_OFF_TEXT); | |
1166 | file_end_addr = file_start_addr + CSECT_LEN (&main_aux); | |
a81ce07d JK |
1167 | |
1168 | if (cs->c_name && cs->c_name[0] == '.') | |
1169 | { | |
1170 | last_csect_name = cs->c_name; | |
1171 | last_csect_val = cs->c_value; | |
a367db89 | 1172 | last_csect_sec = secnum_to_section (cs->c_secnum, objfile); |
a81ce07d JK |
1173 | } |
1174 | } | |
a81ce07d JK |
1175 | continue; |
1176 | ||
df1e1074 PS |
1177 | /* All other symbols are put into the minimal symbol |
1178 | table only. */ | |
a81ce07d | 1179 | |
df1e1074 PS |
1180 | case XMC_RW: |
1181 | continue; | |
a81ce07d JK |
1182 | |
1183 | case XMC_TC0: | |
a81ce07d JK |
1184 | continue; |
1185 | ||
1186 | case XMC_TC: | |
a367db89 | 1187 | continue; |
e38e0312 | 1188 | |
a81ce07d JK |
1189 | default: |
1190 | /* Ignore the symbol. */ | |
1191 | continue; | |
818de002 | 1192 | } |
e38e0312 | 1193 | } |
e38e0312 JG |
1194 | break; |
1195 | ||
a81ce07d JK |
1196 | case XTY_LD: |
1197 | ||
1198 | switch (CSECT_SCLAS (&main_aux)) | |
1199 | { | |
1200 | case XMC_PR: | |
1201 | /* a function entry point. */ | |
1202 | function_entry_point: | |
a81ce07d | 1203 | |
a81ce07d JK |
1204 | fcn_start_addr = cs->c_value; |
1205 | ||
1206 | /* save the function header info, which will be used | |
1207 | when `.bf' is seen. */ | |
1208 | fcn_cs_saved = *cs; | |
1209 | fcn_aux_saved = main_aux; | |
a81ce07d JK |
1210 | continue; |
1211 | ||
1212 | case XMC_GL: | |
1213 | /* shared library function trampoline code entry point. */ | |
a81ce07d JK |
1214 | continue; |
1215 | ||
1216 | case XMC_DS: | |
1217 | /* The symbols often have the same names as debug symbols for | |
1218 | functions, and confuse lookup_symbol. */ | |
1219 | continue; | |
1220 | ||
1221 | default: | |
1222 | /* xlc puts each variable in a separate csect, so we get | |
1223 | an XTY_SD for each variable. But gcc puts several | |
1224 | variables in a csect, so that each variable only gets | |
df1e1074 PS |
1225 | an XTY_LD. This will typically be XMC_RW; I suspect |
1226 | XMC_RO and XMC_BS might be possible too. | |
1227 | These variables are put in the minimal symbol table | |
1228 | only. */ | |
1229 | continue; | |
a81ce07d | 1230 | } |
df1e1074 PS |
1231 | break; |
1232 | ||
1233 | case XTY_CM: | |
1234 | /* Common symbols are put into the minimal symbol table only. */ | |
1235 | continue; | |
e38e0312 | 1236 | |
a81ce07d JK |
1237 | default: |
1238 | break; | |
e38e0312 | 1239 | } |
a81ce07d | 1240 | } |
e38e0312 | 1241 | |
a81ce07d JK |
1242 | switch (cs->c_sclass) |
1243 | { | |
e38e0312 | 1244 | |
a81ce07d | 1245 | case C_FILE: |
818de002 | 1246 | |
a81ce07d JK |
1247 | /* c_value field contains symnum of next .file entry in table |
1248 | or symnum of first global after last .file. */ | |
818de002 | 1249 | |
a81ce07d | 1250 | next_file_symnum = cs->c_value; |
818de002 | 1251 | |
a81ce07d JK |
1252 | /* Complete symbol table for last object file containing |
1253 | debugging information. */ | |
818de002 | 1254 | |
a81ce07d JK |
1255 | /* Whether or not there was a csect in the previous file, we |
1256 | have to call `end_stabs' and `start_stabs' to reset | |
1257 | type_vector, line_vector, etc. structures. */ | |
818de002 | 1258 | |
a81ce07d JK |
1259 | complete_symtab (filestring, file_start_addr); |
1260 | cur_src_end_addr = file_end_addr; | |
436d4143 | 1261 | end_symtab (file_end_addr, objfile, SECT_OFF_TEXT); |
a81ce07d | 1262 | end_stabs (); |
818de002 | 1263 | |
a81ce07d JK |
1264 | /* XCOFF, according to the AIX 3.2 documentation, puts the filename |
1265 | in cs->c_name. But xlc 1.3.0.2 has decided to do things the | |
1266 | standard COFF way and put it in the auxent. We use the auxent if | |
1267 | the symbol is ".file" and an auxent exists, otherwise use the symbol | |
1268 | itself. Simple enough. */ | |
1269 | if (!strcmp (cs->c_name, ".file") && cs->c_naux > 0) | |
1270 | { | |
1271 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, | |
1272 | 0, cs->c_naux, &main_aux); | |
a367db89 | 1273 | filestring = coff_getfilename (&main_aux, objfile); |
818de002 | 1274 | } |
a81ce07d JK |
1275 | else |
1276 | filestring = cs->c_name; | |
d4cedfe4 | 1277 | |
a81ce07d JK |
1278 | start_stabs (); |
1279 | start_symtab (filestring, (char *)NULL, (CORE_ADDR)0); | |
609fd033 | 1280 | record_debugformat ("XCOFF"); |
a81ce07d | 1281 | last_csect_name = 0; |
507e4004 | 1282 | |
a81ce07d JK |
1283 | /* reset file start and end addresses. A compilation unit with no text |
1284 | (only data) should have zero file boundaries. */ | |
1285 | file_start_addr = file_end_addr = 0; | |
e38e0312 | 1286 | break; |
e38e0312 | 1287 | |
a81ce07d JK |
1288 | case C_FUN: |
1289 | fcn_stab_saved = *cs; | |
1290 | break; | |
e38e0312 | 1291 | |
a81ce07d JK |
1292 | case C_FCN: |
1293 | if (STREQ (cs->c_name, ".bf")) | |
1294 | { | |
a367db89 JK |
1295 | CORE_ADDR off = ANOFFSET (objfile->section_offsets, |
1296 | SECT_OFF_TEXT); | |
a81ce07d JK |
1297 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1298 | 0, cs->c_naux, &main_aux); | |
818de002 | 1299 | |
a81ce07d | 1300 | within_function = 1; |
818de002 | 1301 | |
a367db89 | 1302 | new = push_context (0, fcn_start_addr + off); |
e38e0312 | 1303 | |
a81ce07d | 1304 | new->name = define_symbol |
a367db89 JK |
1305 | (fcn_cs_saved.c_value + off, |
1306 | fcn_stab_saved.c_name, 0, 0, objfile); | |
a81ce07d | 1307 | if (new->name != NULL) |
a367db89 | 1308 | SYMBOL_SECTION (new->name) = SECT_OFF_TEXT; |
a81ce07d JK |
1309 | } |
1310 | else if (STREQ (cs->c_name, ".ef")) | |
1311 | { | |
e38e0312 | 1312 | |
a81ce07d JK |
1313 | bfd_coff_swap_aux_in (abfd, raw_auxptr, cs->c_type, cs->c_sclass, |
1314 | 0, cs->c_naux, &main_aux); | |
1315 | ||
1316 | /* The value of .ef is the address of epilogue code; | |
1317 | not useful for gdb. */ | |
1318 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1319 | contains number of lines to '}' */ | |
1320 | ||
df1e1074 PS |
1321 | if (context_stack_depth <= 0) |
1322 | { /* We attempted to pop an empty context stack */ | |
1323 | complain (&ef_complaint, cs->c_symnum); | |
1324 | within_function = 0; | |
1325 | break; | |
1326 | } | |
a81ce07d | 1327 | new = pop_context (); |
f8203ed0 JK |
1328 | /* Stack must be empty now. */ |
1329 | if (context_stack_depth > 0 || new == NULL) | |
1330 | { | |
1331 | complain (&ef_complaint, cs->c_symnum); | |
1332 | within_function = 0; | |
1333 | break; | |
1334 | } | |
a81ce07d JK |
1335 | |
1336 | finish_block (new->name, &local_symbols, new->old_blocks, | |
1337 | new->start_addr, | |
a367db89 JK |
1338 | (fcn_cs_saved.c_value |
1339 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
1340 | + ANOFFSET (objfile->section_offsets, | |
1341 | SECT_OFF_TEXT)), | |
1342 | objfile); | |
a81ce07d JK |
1343 | within_function = 0; |
1344 | } | |
1345 | break; | |
818de002 | 1346 | |
a81ce07d JK |
1347 | case C_BSTAT: |
1348 | /* Begin static block. */ | |
1349 | { | |
1350 | struct internal_syment symbol; | |
af8b7906 | 1351 | |
a81ce07d JK |
1352 | read_symbol (&symbol, cs->c_value); |
1353 | static_block_base = symbol.n_value; | |
a367db89 JK |
1354 | static_block_section = |
1355 | secnum_to_section (symbol.n_scnum, objfile); | |
a81ce07d JK |
1356 | } |
1357 | break; | |
af8b7906 | 1358 | |
a81ce07d JK |
1359 | case C_ESTAT: |
1360 | /* End of static block. */ | |
1361 | static_block_base = 0; | |
1362 | static_block_section = -1; | |
1363 | break; | |
e38e0312 | 1364 | |
a81ce07d JK |
1365 | case C_ARG: |
1366 | case C_REGPARM: | |
f8203ed0 | 1367 | case C_REG: |
a81ce07d JK |
1368 | case C_TPDEF: |
1369 | case C_STRTAG: | |
1370 | case C_UNTAG: | |
1371 | case C_ENTAG: | |
f8203ed0 JK |
1372 | { |
1373 | static struct complaint msg = | |
1374 | {"Unrecognized storage class %d.", 0, 0}; | |
1375 | complain (&msg, cs->c_sclass); | |
1376 | } | |
a81ce07d | 1377 | break; |
e38e0312 | 1378 | |
a81ce07d JK |
1379 | case C_LABEL: |
1380 | case C_NULL: | |
1381 | /* Ignore these. */ | |
1382 | break; | |
e38e0312 | 1383 | |
a81ce07d | 1384 | case C_HIDEXT: |
df1e1074 | 1385 | case C_STAT: |
a81ce07d | 1386 | break; |
e38e0312 | 1387 | |
a81ce07d JK |
1388 | case C_BINCL: |
1389 | /* beginning of include file */ | |
1390 | /* In xlc output, C_BINCL/C_EINCL pair doesn't show up in sorted | |
1391 | order. Thus, when wee see them, we might not know enough info | |
1392 | to process them. Thus, we'll be saving them into a table | |
1393 | (inclTable) and postpone their processing. */ | |
e38e0312 | 1394 | |
a81ce07d JK |
1395 | record_include_begin (cs); |
1396 | break; | |
e38e0312 | 1397 | |
a81ce07d JK |
1398 | case C_EINCL: |
1399 | /* End of include file. */ | |
1400 | /* See the comment after case C_BINCL. */ | |
1401 | record_include_end (cs); | |
1402 | break; | |
1eeba686 | 1403 | |
a81ce07d JK |
1404 | case C_BLOCK: |
1405 | if (STREQ (cs->c_name, ".bb")) | |
1406 | { | |
1407 | depth++; | |
a367db89 JK |
1408 | new = push_context (depth, |
1409 | (cs->c_value | |
1410 | + ANOFFSET (objfile->section_offsets, | |
1411 | SECT_OFF_TEXT))); | |
a81ce07d JK |
1412 | } |
1413 | else if (STREQ (cs->c_name, ".eb")) | |
1414 | { | |
df1e1074 PS |
1415 | if (context_stack_depth <= 0) |
1416 | { /* We attempted to pop an empty context stack */ | |
1417 | complain (&eb_complaint, cs->c_symnum); | |
1418 | break; | |
1419 | } | |
a81ce07d | 1420 | new = pop_context (); |
f8203ed0 JK |
1421 | if (depth-- != new->depth) |
1422 | { | |
df1e1074 | 1423 | complain (&eb_complaint, cs->c_symnum); |
f8203ed0 JK |
1424 | break; |
1425 | } | |
a81ce07d JK |
1426 | if (local_symbols && context_stack_depth > 0) |
1427 | { | |
1428 | /* Make a block for the local symbols within. */ | |
1429 | finish_block (new->name, &local_symbols, new->old_blocks, | |
a367db89 JK |
1430 | new->start_addr, |
1431 | (cs->c_value | |
1432 | + ANOFFSET (objfile->section_offsets, | |
1433 | SECT_OFF_TEXT)), | |
1434 | objfile); | |
a81ce07d JK |
1435 | } |
1436 | local_symbols = new->locals; | |
1437 | } | |
1438 | break; | |
e38e0312 | 1439 | |
a81ce07d JK |
1440 | default: |
1441 | process_xcoff_symbol (cs, objfile); | |
1442 | break; | |
e38e0312 | 1443 | } |
e38e0312 JG |
1444 | } |
1445 | ||
e38e0312 | 1446 | if (last_source_file) |
d07734e3 | 1447 | { |
a367db89 JK |
1448 | struct symtab *s; |
1449 | ||
1450 | complete_symtab (filestring, file_start_addr); | |
1451 | cur_src_end_addr = file_end_addr; | |
436d4143 | 1452 | s = end_symtab (file_end_addr, objfile, SECT_OFF_TEXT); |
a367db89 JK |
1453 | /* When reading symbols for the last C_FILE of the objfile, try |
1454 | to make sure that we set pst->symtab to the symtab for the | |
1455 | file, not to the _globals_ symtab. I'm not sure whether this | |
1456 | actually works right or when/if it comes up. */ | |
1457 | if (pst->symtab == NULL) | |
1458 | pst->symtab = s; | |
d07734e3 FF |
1459 | end_stabs (); |
1460 | } | |
e38e0312 JG |
1461 | } |
1462 | ||
1463 | #define SYMBOL_DUP(SYMBOL1, SYMBOL2) \ | |
1464 | (SYMBOL2) = (struct symbol *) \ | |
1ab3bf1b | 1465 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); \ |
e38e0312 JG |
1466 | *(SYMBOL2) = *(SYMBOL1); |
1467 | ||
1468 | ||
1469 | #define SYMNAME_ALLOC(NAME, ALLOCED) \ | |
ace4b8d7 | 1470 | (ALLOCED) ? (NAME) : obsavestring ((NAME), strlen (NAME), &objfile->symbol_obstack); |
e38e0312 JG |
1471 | |
1472 | ||
a81ce07d JK |
1473 | static struct type *func_symbol_type; |
1474 | static struct type *var_symbol_type; | |
1475 | ||
e38e0312 JG |
1476 | /* process one xcoff symbol. */ |
1477 | ||
1478 | static struct symbol * | |
1ab3bf1b | 1479 | process_xcoff_symbol (cs, objfile) |
e38e0312 | 1480 | register struct coff_symbol *cs; |
1ab3bf1b | 1481 | struct objfile *objfile; |
e38e0312 JG |
1482 | { |
1483 | struct symbol onesymbol; | |
1484 | register struct symbol *sym = &onesymbol; | |
1485 | struct symbol *sym2 = NULL; | |
df1e1074 | 1486 | char *name, *pp; |
e38e0312 | 1487 | |
a367db89 JK |
1488 | int sec; |
1489 | CORE_ADDR off; | |
1490 | ||
1491 | if (cs->c_secnum < 0) | |
1492 | { | |
1493 | /* The value is a register number, offset within a frame, etc., | |
1494 | and does not get relocated. */ | |
1495 | off = 0; | |
1496 | sec = -1; | |
1497 | } | |
1498 | else | |
1499 | { | |
1500 | sec = secnum_to_section (cs->c_secnum, objfile); | |
1501 | off = ANOFFSET (objfile->section_offsets, sec); | |
1502 | } | |
1503 | ||
e38e0312 JG |
1504 | name = cs->c_name; |
1505 | if (name[0] == '.') | |
1506 | ++name; | |
1507 | ||
4ed97c9a | 1508 | memset (sym, '\0', sizeof (struct symbol)); |
e38e0312 JG |
1509 | |
1510 | /* default assumptions */ | |
a367db89 | 1511 | SYMBOL_VALUE (sym) = cs->c_value + off; |
e38e0312 | 1512 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; |
a367db89 | 1513 | SYMBOL_SECTION (sym) = secnum_to_section (cs->c_secnum, objfile); |
e38e0312 | 1514 | |
a81ce07d JK |
1515 | if (ISFCN (cs->c_type)) |
1516 | { | |
1517 | /* At this point, we don't know the type of the function. This | |
1518 | will be patched with the type from its stab entry later on in | |
1519 | patch_block_stabs (), unless the file was compiled without -g. */ | |
e38e0312 | 1520 | |
a81ce07d JK |
1521 | SYMBOL_NAME (sym) = SYMNAME_ALLOC (name, symname_alloced); |
1522 | SYMBOL_TYPE (sym) = func_symbol_type; | |
e38e0312 | 1523 | |
a81ce07d JK |
1524 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
1525 | SYMBOL_DUP (sym, sym2); | |
e38e0312 | 1526 | |
a81ce07d JK |
1527 | if (cs->c_sclass == C_EXT) |
1528 | add_symbol_to_list (sym2, &global_symbols); | |
1529 | else if (cs->c_sclass == C_HIDEXT || cs->c_sclass == C_STAT) | |
1530 | add_symbol_to_list (sym2, &file_symbols); | |
1531 | } | |
1532 | else | |
e38e0312 | 1533 | { |
a81ce07d JK |
1534 | /* In case we can't figure out the type, provide default. */ |
1535 | SYMBOL_TYPE (sym) = var_symbol_type; | |
1536 | ||
1537 | switch (cs->c_sclass) | |
1538 | { | |
818de002 | 1539 | #if 0 |
df1e1074 PS |
1540 | /* The values of functions and global symbols are now resolved |
1541 | via the global_sym_chain in stabsread.c. */ | |
a81ce07d JK |
1542 | case C_FUN: |
1543 | if (fcn_cs_saved.c_sclass == C_EXT) | |
1544 | add_stab_to_list (name, &global_stabs); | |
1545 | else | |
1546 | add_stab_to_list (name, &file_stabs); | |
1547 | break; | |
e38e0312 | 1548 | |
a81ce07d JK |
1549 | case C_GSYM: |
1550 | add_stab_to_list (name, &global_stabs); | |
1551 | break; | |
df1e1074 | 1552 | #endif |
e38e0312 | 1553 | |
a81ce07d JK |
1554 | case C_BCOMM: |
1555 | common_block_start (cs->c_name, objfile); | |
1556 | break; | |
9438d642 | 1557 | |
a81ce07d JK |
1558 | case C_ECOMM: |
1559 | common_block_end (objfile); | |
1560 | break; | |
9438d642 | 1561 | |
a81ce07d JK |
1562 | default: |
1563 | complain (&storclass_complaint, cs->c_sclass); | |
1564 | /* FALLTHROUGH */ | |
9438d642 | 1565 | |
a81ce07d JK |
1566 | case C_DECL: |
1567 | case C_PSYM: | |
1568 | case C_RPSYM: | |
1569 | case C_ECOML: | |
a367db89 JK |
1570 | case C_LSYM: |
1571 | case C_RSYM: | |
df1e1074 | 1572 | case C_GSYM: |
1eeba686 | 1573 | |
a367db89 JK |
1574 | { |
1575 | sym = define_symbol (cs->c_value + off, cs->c_name, 0, 0, objfile); | |
1576 | if (sym != NULL) | |
1577 | { | |
1578 | SYMBOL_SECTION (sym) = sec; | |
1579 | } | |
1580 | return sym; | |
1581 | } | |
e38e0312 | 1582 | |
a81ce07d | 1583 | case C_STSYM: |
1eeba686 | 1584 | |
a81ce07d JK |
1585 | /* For xlc (not GCC), the 'V' symbol descriptor is used for |
1586 | all statics and we need to distinguish file-scope versus | |
1587 | function-scope using within_function. We do this by | |
1588 | changing the string we pass to define_symbol to use 'S' | |
1589 | where we need to, which is not necessarily super-clean, | |
1590 | but seems workable enough. */ | |
91cc45da | 1591 | |
a81ce07d JK |
1592 | if (*name == ':' || (pp = (char *) strchr(name, ':')) == NULL) |
1593 | return NULL; | |
91cc45da | 1594 | |
a81ce07d JK |
1595 | ++pp; |
1596 | if (*pp == 'V' && !within_function) | |
1597 | *pp = 'S'; | |
a367db89 JK |
1598 | sym = define_symbol ((cs->c_value |
1599 | + ANOFFSET (objfile->section_offsets, | |
1600 | static_block_section)), | |
1601 | cs->c_name, 0, 0, objfile); | |
a81ce07d JK |
1602 | if (sym != NULL) |
1603 | { | |
1604 | SYMBOL_VALUE (sym) += static_block_base; | |
1605 | SYMBOL_SECTION (sym) = static_block_section; | |
1606 | } | |
1607 | return sym; | |
e38e0312 | 1608 | |
1eeba686 | 1609 | } |
e38e0312 | 1610 | } |
e38e0312 JG |
1611 | return sym2; |
1612 | } | |
1613 | ||
4e9e52ab PS |
1614 | /* Extract the file name from the aux entry of a C_FILE symbol. |
1615 | Result is in static storage and is only good for temporary use. */ | |
e8abe489 PS |
1616 | |
1617 | static char * | |
a367db89 JK |
1618 | coff_getfilename (aux_entry, objfile) |
1619 | union internal_auxent *aux_entry; | |
1620 | struct objfile *objfile; | |
e8abe489 PS |
1621 | { |
1622 | static char buffer[BUFSIZ]; | |
e8abe489 PS |
1623 | |
1624 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
a367db89 JK |
1625 | strcpy (buffer, |
1626 | ((struct coff_symfile_info *)objfile->sym_private)->strtbl | |
1627 | + aux_entry->x_file.x_n.x_offset); | |
e8abe489 PS |
1628 | else |
1629 | { | |
1630 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1631 | buffer[FILNMLEN] = '\0'; | |
1632 | } | |
4e9e52ab | 1633 | return (buffer); |
e8abe489 PS |
1634 | } |
1635 | ||
3c02636b JK |
1636 | /* Set *SYMBOL to symbol number symno in symtbl. */ |
1637 | static void | |
1638 | read_symbol (symbol, symno) | |
1639 | struct internal_syment *symbol; | |
e38e0312 JG |
1640 | int symno; |
1641 | { | |
a367db89 JK |
1642 | int nsyms = |
1643 | ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private) | |
1644 | ->symtbl_num_syms; | |
1645 | char *stbl = | |
1646 | ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private) | |
1647 | ->symtbl; | |
1648 | if (symno < 0 || symno >= nsyms) | |
c84a96d7 | 1649 | { |
b646b438 | 1650 | static struct complaint msg = |
c84a96d7 JK |
1651 | {"Invalid symbol offset", 0, 0}; |
1652 | complain (&msg); | |
3c02636b JK |
1653 | symbol->n_value = 0; |
1654 | symbol->n_scnum = -1; | |
1655 | return; | |
c84a96d7 | 1656 | } |
a367db89 JK |
1657 | bfd_coff_swap_sym_in (this_symtab_psymtab->objfile->obfd, |
1658 | stbl + (symno*local_symesz), | |
1659 | symbol); | |
3c02636b JK |
1660 | } |
1661 | ||
1662 | /* Get value corresponding to symbol number symno in symtbl. */ | |
1663 | ||
1664 | static int | |
1665 | read_symbol_nvalue (symno) | |
1666 | int symno; | |
1667 | { | |
1668 | struct internal_syment symbol[1]; | |
1669 | ||
1670 | read_symbol (symbol, symno); | |
e38e0312 JG |
1671 | return symbol->n_value; |
1672 | } | |
1673 | ||
1674 | ||
c84a96d7 JK |
1675 | /* Find the address of the function corresponding to symno, where |
1676 | symno is the symbol pointed to by the linetable. */ | |
1677 | ||
e38e0312 | 1678 | static int |
c84a96d7 | 1679 | read_symbol_lineno (symno) |
a367db89 | 1680 | int symno; |
e38e0312 | 1681 | { |
a367db89 JK |
1682 | int nsyms = |
1683 | ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private) | |
1684 | ->symtbl_num_syms; | |
1685 | char *stbl = | |
1686 | ((struct coff_symfile_info *)this_symtab_psymtab->objfile->sym_private) | |
1687 | ->symtbl; | |
e38e0312 JG |
1688 | struct internal_syment symbol[1]; |
1689 | union internal_auxent main_aux[1]; | |
1690 | ||
a367db89 JK |
1691 | if (symno < 0) |
1692 | { | |
1693 | complain (&bf_notfound_complaint); | |
1694 | return 0; | |
1695 | } | |
1696 | ||
c84a96d7 JK |
1697 | /* Note that just searching for a short distance (e.g. 50 symbols) |
1698 | is not enough, at least in the following case. | |
1699 | ||
1700 | .extern foo | |
1701 | [many .stabx entries] | |
1702 | [a few functions, referring to foo] | |
1703 | .globl foo | |
1704 | .bf | |
e38e0312 | 1705 | |
c84a96d7 JK |
1706 | What happens here is that the assembler moves the .stabx entries |
1707 | to right before the ".bf" for foo, but the symbol for "foo" is before | |
1708 | all the stabx entries. See PR gdb/2222. */ | |
a367db89 JK |
1709 | |
1710 | /* Maintaining a table of .bf entries might be preferable to this search. | |
1711 | If I understand things correctly it would need to be done only for | |
1712 | the duration of a single psymtab to symtab conversion. */ | |
1713 | while (symno < nsyms) | |
1714 | { | |
1715 | bfd_coff_swap_sym_in (symfile_bfd, | |
1716 | stbl + (symno * local_symesz), symbol); | |
1717 | if (symbol->n_sclass == C_FCN && STREQ (symbol->n_name, ".bf")) | |
1718 | goto gotit; | |
1719 | symno += symbol->n_numaux + 1; | |
1720 | } | |
e38e0312 | 1721 | |
e9916390 | 1722 | complain (&bf_notfound_complaint); |
e38e0312 JG |
1723 | return 0; |
1724 | ||
1725 | gotit: | |
1726 | /* take aux entry and return its lineno */ | |
1727 | symno++; | |
a367db89 JK |
1728 | bfd_coff_swap_aux_in (this_symtab_psymtab->objfile->obfd, |
1729 | stbl + symno * local_symesz, | |
bf8d9d28 ILT |
1730 | symbol->n_type, symbol->n_sclass, |
1731 | 0, symbol->n_numaux, main_aux); | |
e38e0312 JG |
1732 | |
1733 | return main_aux->x_sym.x_misc.x_lnsz.x_lnno; | |
1734 | } | |
1735 | ||
1736 | /* Support for line number handling */ | |
1737 | ||
1738 | /* This function is called for every section; it finds the outer limits | |
1739 | * of the line table (minimum and maximum file offset) so that the | |
1740 | * mainline code can read the whole thing for efficiency. | |
1741 | */ | |
1742 | static void | |
a367db89 JK |
1743 | find_linenos (abfd, asect, vpinfo) |
1744 | bfd *abfd; | |
1745 | sec_ptr asect; | |
1746 | PTR vpinfo; | |
e38e0312 JG |
1747 | { |
1748 | struct coff_symfile_info *info; | |
1749 | int size, count; | |
1750 | file_ptr offset, maxoff; | |
1751 | ||
1752 | count = asect->lineno_count; | |
1753 | ||
2e4964ad | 1754 | if (!STREQ (asect->name, ".text") || count == 0) |
e38e0312 JG |
1755 | return; |
1756 | ||
a367db89 JK |
1757 | size = count * coff_data (abfd)->local_linesz; |
1758 | info = (struct coff_symfile_info *)vpinfo; | |
e38e0312 JG |
1759 | offset = asect->line_filepos; |
1760 | maxoff = offset + size; | |
1761 | ||
1762 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
1763 | info->min_lineno_offset = offset; | |
1764 | ||
1765 | if (maxoff > info->max_lineno_offset) | |
1766 | info->max_lineno_offset = maxoff; | |
1767 | } | |
a367db89 JK |
1768 | \f |
1769 | static void xcoff_psymtab_to_symtab_1 PARAMS ((struct partial_symtab *)); | |
e38e0312 | 1770 | |
a367db89 JK |
1771 | static void |
1772 | xcoff_psymtab_to_symtab_1 (pst) | |
1773 | struct partial_symtab *pst; | |
e38e0312 | 1774 | { |
a367db89 JK |
1775 | struct cleanup *old_chain; |
1776 | int i; | |
1777 | ||
1778 | if (!pst) | |
1779 | return; | |
1780 | ||
1781 | if (pst->readin) | |
1782 | { | |
1783 | fprintf_unfiltered | |
1784 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1785 | pst->filename); | |
1786 | return; | |
1787 | } | |
e38e0312 | 1788 | |
a367db89 JK |
1789 | /* Read in all partial symtabs on which this one is dependent */ |
1790 | for (i = 0; i < pst->number_of_dependencies; i++) | |
1791 | if (!pst->dependencies[i]->readin) | |
1792 | { | |
1793 | /* Inform about additional files that need to be read in. */ | |
1794 | if (info_verbose) | |
1795 | { | |
1796 | fputs_filtered (" ", gdb_stdout); | |
1797 | wrap_here (""); | |
1798 | fputs_filtered ("and ", gdb_stdout); | |
1799 | wrap_here (""); | |
1800 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
1801 | wrap_here (""); /* Flush output */ | |
1802 | gdb_flush (gdb_stdout); | |
1803 | } | |
1804 | xcoff_psymtab_to_symtab_1 (pst->dependencies[i]); | |
1805 | } | |
0eb22669 | 1806 | |
a367db89 JK |
1807 | if (((struct symloc *)pst->read_symtab_private)->numsyms != 0) |
1808 | { | |
1809 | /* Init stuff necessary for reading in symbols. */ | |
1810 | stabsread_init (); | |
1811 | buildsym_init (); | |
c8623080 | 1812 | old_chain = make_cleanup ((make_cleanup_func) really_free_pendings, 0); |
e38e0312 | 1813 | |
a367db89 JK |
1814 | read_xcoff_symtab (pst); |
1815 | sort_symtab_syms (pst->symtab); | |
e38e0312 | 1816 | |
a367db89 JK |
1817 | do_cleanups (old_chain); |
1818 | } | |
e38e0312 | 1819 | |
a367db89 | 1820 | pst->readin = 1; |
e38e0312 | 1821 | } |
0eb22669 | 1822 | |
a367db89 JK |
1823 | static void xcoff_psymtab_to_symtab PARAMS ((struct partial_symtab *)); |
1824 | ||
1825 | /* Read in all of the symbols for a given psymtab for real. | |
1826 | Be verbose about it if the user wants that. */ | |
1827 | ||
0eb22669 | 1828 | static void |
a367db89 JK |
1829 | xcoff_psymtab_to_symtab (pst) |
1830 | struct partial_symtab *pst; | |
0eb22669 | 1831 | { |
a367db89 JK |
1832 | bfd *sym_bfd; |
1833 | ||
1834 | if (!pst) | |
1835 | return; | |
1836 | ||
1837 | if (pst->readin) | |
1838 | { | |
1839 | fprintf_unfiltered | |
1840 | (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", | |
1841 | pst->filename); | |
1842 | return; | |
1843 | } | |
1844 | ||
1845 | if (((struct symloc *)pst->read_symtab_private)->numsyms != 0 | |
1846 | || pst->number_of_dependencies) | |
1847 | { | |
1848 | /* Print the message now, before reading the string table, | |
1849 | to avoid disconcerting pauses. */ | |
1850 | if (info_verbose) | |
1851 | { | |
1852 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1853 | gdb_flush (gdb_stdout); | |
1854 | } | |
1855 | ||
1856 | sym_bfd = pst->objfile->obfd; | |
1857 | ||
1858 | next_symbol_text_func = xcoff_next_symbol_text; | |
1859 | ||
1860 | xcoff_psymtab_to_symtab_1 (pst); | |
1861 | ||
1862 | /* Match with global symbols. This only needs to be done once, | |
1863 | after all of the symtabs and dependencies have been read in. */ | |
1864 | scan_file_globals (pst->objfile); | |
1865 | ||
1866 | /* Finish up the debug error message. */ | |
1867 | if (info_verbose) | |
1868 | printf_filtered ("done.\n"); | |
1869 | } | |
1870 | } | |
93fe4e33 | 1871 | \f |
1ab3bf1b | 1872 | static void |
9b280a7f | 1873 | xcoff_new_init (objfile) |
80d68b1d | 1874 | struct objfile *objfile; |
e38e0312 | 1875 | { |
df1e1074 PS |
1876 | stabsread_new_init (); |
1877 | buildsym_new_init (); | |
e38e0312 JG |
1878 | } |
1879 | ||
a367db89 | 1880 | /* Do initialization in preparation for reading symbols from OBJFILE. |
dd469789 JG |
1881 | |
1882 | We will only be called if this is an XCOFF or XCOFF-like file. | |
1883 | BFD handles figuring out the format of the file, and code in symfile.c | |
a367db89 | 1884 | uses BFD's determination to vector to us. */ |
dd469789 | 1885 | |
1ab3bf1b | 1886 | static void |
9b280a7f | 1887 | xcoff_symfile_init (objfile) |
a367db89 | 1888 | struct objfile *objfile; |
e38e0312 | 1889 | { |
e38e0312 | 1890 | /* Allocate struct to keep track of the symfile */ |
80d68b1d FF |
1891 | objfile -> sym_private = xmmalloc (objfile -> md, |
1892 | sizeof (struct coff_symfile_info)); | |
436d4143 JL |
1893 | |
1894 | /* XCOFF objects may be reordered, so set OBJF_REORDERED. If we | |
1895 | find this causes a significant slowdown in gdb then we could | |
1896 | set it in the debug symbol readers only when necessary. */ | |
1897 | objfile->flags |= OBJF_REORDERED; | |
1898 | ||
5e2e79f8 | 1899 | init_entry_point_info (objfile); |
e38e0312 JG |
1900 | } |
1901 | ||
80d68b1d FF |
1902 | /* Perform any local cleanups required when we are done with a particular |
1903 | objfile. I.E, we are in the process of discarding all symbol information | |
1904 | for an objfile, freeing up all memory held for it, and unlinking the | |
1905 | objfile struct from the global list of known objfiles. */ | |
1906 | ||
1907 | static void | |
9b280a7f | 1908 | xcoff_symfile_finish (objfile) |
80d68b1d FF |
1909 | struct objfile *objfile; |
1910 | { | |
1911 | if (objfile -> sym_private != NULL) | |
1912 | { | |
1913 | mfree (objfile -> md, objfile -> sym_private); | |
1914 | } | |
1915 | ||
a367db89 | 1916 | /* Start with a fresh include table for the next objfile. */ |
80d68b1d FF |
1917 | if (inclTable) |
1918 | { | |
1919 | free (inclTable); | |
1920 | inclTable = NULL; | |
1921 | } | |
1922 | inclIndx = inclLength = inclDepth = 0; | |
1923 | } | |
1924 | ||
e38e0312 | 1925 | |
a367db89 JK |
1926 | static void |
1927 | init_stringtab (abfd, offset, objfile) | |
e38e0312 | 1928 | bfd *abfd; |
d5931d79 | 1929 | file_ptr offset; |
1ab3bf1b | 1930 | struct objfile *objfile; |
e38e0312 JG |
1931 | { |
1932 | long length; | |
1933 | int val; | |
1934 | unsigned char lengthbuf[4]; | |
a367db89 | 1935 | char *strtbl; |
e38e0312 | 1936 | |
a367db89 | 1937 | ((struct coff_symfile_info *)objfile->sym_private)->strtbl = NULL; |
e38e0312 | 1938 | |
987622b5 | 1939 | if (bfd_seek (abfd, offset, SEEK_SET) < 0) |
a367db89 JK |
1940 | error ("cannot seek to string table in %s: %s", |
1941 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1942 | ||
1943 | val = bfd_read ((char *)lengthbuf, 1, sizeof lengthbuf, abfd); | |
1944 | length = bfd_h_get_32 (abfd, lengthbuf); | |
e38e0312 JG |
1945 | |
1946 | /* If no string table is needed, then the file may end immediately | |
a367db89 | 1947 | after the symbols. Just return with `strtbl' set to NULL. */ |
e38e0312 | 1948 | |
a367db89 JK |
1949 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
1950 | return; | |
e38e0312 JG |
1951 | |
1952 | /* Allocate string table from symbol_obstack. We will need this table | |
1953 | as long as we have its symbol table around. */ | |
1954 | ||
a367db89 JK |
1955 | strtbl = (char *) obstack_alloc (&objfile->symbol_obstack, length); |
1956 | ((struct coff_symfile_info *)objfile->sym_private)->strtbl = strtbl; | |
e38e0312 | 1957 | |
df1e1074 PS |
1958 | /* Copy length buffer, the first byte is usually zero and is |
1959 | used for stabs with a name length of zero. */ | |
1960 | memcpy (strtbl, lengthbuf, sizeof lengthbuf); | |
a367db89 JK |
1961 | if (length == sizeof lengthbuf) |
1962 | return; | |
e38e0312 | 1963 | |
a367db89 JK |
1964 | val = bfd_read (strtbl + sizeof lengthbuf, 1, length - sizeof lengthbuf, |
1965 | abfd); | |
e38e0312 | 1966 | |
a367db89 JK |
1967 | if (val != length - sizeof lengthbuf) |
1968 | error ("cannot read string table from %s: %s", | |
1969 | bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ())); | |
1970 | if (strtbl[length - 1] != '\0') | |
1971 | error ("bad symbol file: string table does not end with null character"); | |
e38e0312 | 1972 | |
a367db89 | 1973 | return; |
e38e0312 | 1974 | } |
a367db89 JK |
1975 | \f |
1976 | /* If we have not yet seen a function for this psymtab, this is 0. If we | |
1977 | have seen one, it is the offset in the line numbers of the line numbers | |
1978 | for the psymtab. */ | |
1979 | static unsigned int first_fun_line_offset; | |
e38e0312 | 1980 | |
a367db89 JK |
1981 | static struct partial_symtab *xcoff_start_psymtab |
1982 | PARAMS ((struct objfile *, struct section_offsets *, char *, int, | |
2ad5709f | 1983 | struct partial_symbol **, struct partial_symbol **)); |
a367db89 JK |
1984 | |
1985 | /* Allocate and partially fill a partial symtab. It will be | |
1986 | completely filled at the end of the symbol list. | |
1987 | ||
1988 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR | |
1989 | is the address relative to which its symbols are (incremental) or 0 | |
1990 | (normal). */ | |
1991 | ||
1992 | static struct partial_symtab * | |
1993 | xcoff_start_psymtab (objfile, section_offsets, | |
1994 | filename, first_symnum, global_syms, static_syms) | |
1995 | struct objfile *objfile; | |
1996 | struct section_offsets *section_offsets; | |
1997 | char *filename; | |
1998 | int first_symnum; | |
2ad5709f FF |
1999 | struct partial_symbol **global_syms; |
2000 | struct partial_symbol **static_syms; | |
e38e0312 | 2001 | { |
a367db89 JK |
2002 | struct partial_symtab *result = |
2003 | start_psymtab_common (objfile, section_offsets, | |
2004 | filename, | |
2005 | /* We fill in textlow later. */ | |
2006 | 0, | |
2007 | global_syms, static_syms); | |
2008 | ||
2009 | result->read_symtab_private = (char *) | |
2010 | obstack_alloc (&objfile -> psymbol_obstack, sizeof (struct symloc)); | |
2011 | ((struct symloc *)result->read_symtab_private)->first_symnum = first_symnum; | |
2012 | result->read_symtab = xcoff_psymtab_to_symtab; | |
2013 | ||
2014 | /* Deduce the source language from the filename for this psymtab. */ | |
2015 | psymtab_language = deduce_language_from_filename (filename); | |
2016 | ||
2017 | return result; | |
2018 | } | |
e38e0312 | 2019 | |
a367db89 JK |
2020 | static struct partial_symtab *xcoff_end_psymtab |
2021 | PARAMS ((struct partial_symtab *, char **, int, int, | |
68aadb90 | 2022 | struct partial_symtab **, int, int)); |
e38e0312 | 2023 | |
a367db89 JK |
2024 | /* Close off the current usage of PST. |
2025 | Returns PST, or NULL if the partial symtab was empty and thrown away. | |
e38e0312 | 2026 | |
a367db89 | 2027 | CAPPING_SYMBOL_NUMBER is the end of pst (exclusive). |
e38e0312 | 2028 | |
a367db89 JK |
2029 | INCLUDE_LIST, NUM_INCLUDES, DEPENDENCY_LIST, and NUMBER_DEPENDENCIES |
2030 | are the information for includes and dependencies. */ | |
e38e0312 | 2031 | |
a367db89 JK |
2032 | static struct partial_symtab * |
2033 | xcoff_end_psymtab (pst, include_list, num_includes, capping_symbol_number, | |
68aadb90 | 2034 | dependency_list, number_dependencies, textlow_not_set) |
a367db89 JK |
2035 | struct partial_symtab *pst; |
2036 | char **include_list; | |
2037 | int num_includes; | |
2038 | int capping_symbol_number; | |
2039 | struct partial_symtab **dependency_list; | |
2040 | int number_dependencies; | |
68aadb90 | 2041 | int textlow_not_set; |
a367db89 JK |
2042 | { |
2043 | int i; | |
2044 | struct objfile *objfile = pst -> objfile; | |
2045 | ||
2046 | if (capping_symbol_number != -1) | |
2047 | ((struct symloc *)pst->read_symtab_private)->numsyms = | |
2048 | capping_symbol_number | |
2049 | - ((struct symloc *)pst->read_symtab_private)->first_symnum; | |
2050 | ((struct symloc *)pst->read_symtab_private)->lineno_off = | |
2051 | first_fun_line_offset; | |
2052 | first_fun_line_offset = 0; | |
2053 | pst->n_global_syms = | |
2054 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); | |
2055 | pst->n_static_syms = | |
2056 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); | |
2057 | ||
2058 | pst->number_of_dependencies = number_dependencies; | |
2059 | if (number_dependencies) | |
2060 | { | |
2061 | pst->dependencies = (struct partial_symtab **) | |
2062 | obstack_alloc (&objfile->psymbol_obstack, | |
2063 | number_dependencies * sizeof (struct partial_symtab *)); | |
2064 | memcpy (pst->dependencies, dependency_list, | |
2065 | number_dependencies * sizeof (struct partial_symtab *)); | |
2066 | } | |
2067 | else | |
2068 | pst->dependencies = 0; | |
2069 | ||
2070 | for (i = 0; i < num_includes; i++) | |
2071 | { | |
2072 | struct partial_symtab *subpst = | |
2073 | allocate_psymtab (include_list[i], objfile); | |
2074 | ||
2075 | subpst->section_offsets = pst->section_offsets; | |
2076 | subpst->read_symtab_private = | |
2077 | (char *) obstack_alloc (&objfile->psymbol_obstack, | |
2078 | sizeof (struct symloc)); | |
2079 | ((struct symloc *)subpst->read_symtab_private)->first_symnum = 0; | |
2080 | ((struct symloc *)subpst->read_symtab_private)->numsyms = 0; | |
2081 | subpst->textlow = 0; | |
2082 | subpst->texthigh = 0; | |
2083 | ||
2084 | /* We could save slight bits of space by only making one of these, | |
2085 | shared by the entire set of include files. FIXME-someday. */ | |
2086 | subpst->dependencies = (struct partial_symtab **) | |
2087 | obstack_alloc (&objfile->psymbol_obstack, | |
2088 | sizeof (struct partial_symtab *)); | |
2089 | subpst->dependencies[0] = pst; | |
2090 | subpst->number_of_dependencies = 1; | |
2091 | ||
2092 | subpst->globals_offset = | |
2093 | subpst->n_global_syms = | |
2094 | subpst->statics_offset = | |
2095 | subpst->n_static_syms = 0; | |
2096 | ||
2097 | subpst->readin = 0; | |
2098 | subpst->symtab = 0; | |
2099 | subpst->read_symtab = pst->read_symtab; | |
2100 | } | |
2101 | ||
2102 | sort_pst_symbols (pst); | |
2103 | ||
2104 | /* If there is already a psymtab or symtab for a file of this name, | |
2105 | remove it. (If there is a symtab, more drastic things also | |
2106 | happen.) This happens in VxWorks. */ | |
2107 | free_named_symtabs (pst->filename); | |
2108 | ||
2109 | if (num_includes == 0 | |
2110 | && number_dependencies == 0 | |
2111 | && pst->n_global_syms == 0 | |
2112 | && pst->n_static_syms == 0) | |
2113 | { | |
2114 | /* Throw away this psymtab, it's empty. We can't deallocate it, since | |
2115 | it is on the obstack, but we can forget to chain it on the list. */ | |
2116 | /* Empty psymtabs happen as a result of header files which don't have | |
df1e1074 | 2117 | any symbols in them. There can be a lot of them. */ |
a367db89 | 2118 | |
4dbdbfc4 | 2119 | discard_psymtab (pst); |
a367db89 JK |
2120 | |
2121 | /* Indicate that psymtab was thrown away. */ | |
2122 | pst = (struct partial_symtab *)NULL; | |
2123 | } | |
2124 | return pst; | |
2125 | } | |
2126 | ||
2127 | static void swap_sym PARAMS ((struct internal_syment *, | |
2128 | union internal_auxent *, char **, char **, | |
2129 | unsigned int *, | |
2130 | struct objfile *)); | |
2131 | ||
2132 | /* Swap raw symbol at *RAW and put the name in *NAME, the symbol in | |
2133 | *SYMBOL, the first auxent in *AUX. Advance *RAW and *SYMNUMP over | |
2134 | the symbol and its auxents. */ | |
2135 | ||
2136 | static void | |
2137 | swap_sym (symbol, aux, name, raw, symnump, objfile) | |
2138 | struct internal_syment *symbol; | |
2139 | union internal_auxent *aux; | |
2140 | char **name; | |
2141 | char **raw; | |
2142 | unsigned int *symnump; | |
2143 | struct objfile *objfile; | |
2144 | { | |
2145 | bfd_coff_swap_sym_in (objfile->obfd, *raw, symbol); | |
2146 | if (symbol->n_zeroes) | |
2147 | { | |
2148 | /* If it's exactly E_SYMNMLEN characters long it isn't | |
2149 | '\0'-terminated. */ | |
2150 | if (symbol->n_name[E_SYMNMLEN - 1] != '\0') | |
2151 | { | |
2152 | /* FIXME: wastes memory for symbols which we don't end up putting | |
2153 | into the minimal symbols. */ | |
2154 | char *p; | |
2155 | p = obstack_alloc (&objfile->psymbol_obstack, E_SYMNMLEN + 1); | |
2156 | strncpy (p, symbol->n_name, E_SYMNMLEN); | |
2157 | p[E_SYMNMLEN] = '\0'; | |
2158 | *name = p; | |
2159 | } | |
2160 | else | |
2161 | /* Point to the unswapped name as that persists as long as the | |
2162 | objfile does. */ | |
2163 | *name = ((struct external_syment *)*raw)->e.e_name; | |
2164 | } | |
2165 | else if (symbol->n_sclass & 0x80) | |
2166 | { | |
2167 | *name = ((struct coff_symfile_info *)objfile->sym_private)->debugsec | |
2168 | + symbol->n_offset; | |
2169 | } | |
2170 | else | |
2171 | { | |
2172 | *name = ((struct coff_symfile_info *)objfile->sym_private)->strtbl | |
2173 | + symbol->n_offset; | |
2174 | } | |
2175 | ++*symnump; | |
2176 | *raw += coff_data (objfile->obfd)->local_symesz; | |
2177 | if (symbol->n_numaux > 0) | |
2178 | { | |
2179 | bfd_coff_swap_aux_in (objfile->obfd, *raw, symbol->n_type, | |
2180 | symbol->n_sclass, 0, symbol->n_numaux, aux); | |
2181 | ||
2182 | *symnump += symbol->n_numaux; | |
2183 | *raw += coff_data (objfile->obfd)->local_symesz * symbol->n_numaux; | |
2184 | } | |
e38e0312 JG |
2185 | } |
2186 | ||
2187 | static void | |
a367db89 JK |
2188 | scan_xcoff_symtab (section_offsets, objfile) |
2189 | struct section_offsets *section_offsets; | |
2190 | struct objfile *objfile; | |
e38e0312 | 2191 | { |
211b564e | 2192 | CORE_ADDR toc_offset = 0; /* toc offset value in data section. */ |
df1e1074 | 2193 | char *filestring = NULL; |
a367db89 JK |
2194 | |
2195 | char *namestring; | |
a367db89 | 2196 | int past_first_source_file = 0; |
a367db89 | 2197 | bfd *abfd; |
211b564e | 2198 | asection *bfd_sect; |
a367db89 JK |
2199 | unsigned int nsyms; |
2200 | ||
2201 | /* Current partial symtab */ | |
2202 | struct partial_symtab *pst; | |
2203 | ||
2204 | /* List of current psymtab's include files */ | |
2205 | char **psymtab_include_list; | |
2206 | int includes_allocated; | |
2207 | int includes_used; | |
2208 | ||
2209 | /* Index within current psymtab dependency list */ | |
2210 | struct partial_symtab **dependency_list; | |
2211 | int dependencies_used, dependencies_allocated; | |
2212 | ||
2213 | char *sraw_symbol; | |
2214 | struct internal_syment symbol; | |
2215 | union internal_auxent main_aux; | |
2216 | unsigned int ssymnum; | |
2217 | ||
2218 | char *last_csect_name = NULL; /* last seen csect's name and value */ | |
df1e1074 PS |
2219 | CORE_ADDR last_csect_val = 0; |
2220 | int last_csect_sec = 0; | |
2221 | int misc_func_recorded = 0; /* true if any misc. function */ | |
3a179be1 | 2222 | int textlow_not_set = 1; |
a367db89 JK |
2223 | |
2224 | pst = (struct partial_symtab *) 0; | |
2225 | ||
2226 | includes_allocated = 30; | |
2227 | includes_used = 0; | |
2228 | psymtab_include_list = (char **) alloca (includes_allocated * | |
2229 | sizeof (char *)); | |
2230 | ||
2231 | dependencies_allocated = 30; | |
2232 | dependencies_used = 0; | |
2233 | dependency_list = | |
2234 | (struct partial_symtab **) alloca (dependencies_allocated * | |
2235 | sizeof (struct partial_symtab *)); | |
2236 | ||
2237 | last_source_file = NULL; | |
2238 | ||
2239 | abfd = objfile->obfd; | |
2240 | ||
2241 | sraw_symbol = ((struct coff_symfile_info *)objfile->sym_private)->symtbl; | |
2242 | nsyms = ((struct coff_symfile_info *)objfile->sym_private)->symtbl_num_syms; | |
2243 | ssymnum = 0; | |
2244 | while (ssymnum < nsyms) | |
2245 | { | |
df1e1074 | 2246 | int sclass = ((struct external_syment *)sraw_symbol)->e_sclass[0] & 0xff; |
a367db89 JK |
2247 | /* This is the type we pass to partial-stab.h. A less kludgy solution |
2248 | would be to break out partial-stab.h into its various parts--shuffle | |
2249 | off the DBXREAD_ONLY stuff to dbxread.c, and make separate | |
2250 | pstab-norm.h (for most types), pstab-sol.h (for N_SOL), etc. */ | |
2251 | int stype; | |
2252 | ||
2253 | QUIT; | |
2254 | ||
2255 | switch (sclass) | |
2256 | { | |
2257 | case C_EXT: | |
2258 | case C_HIDEXT: | |
2259 | { | |
2260 | /* The CSECT auxent--always the last auxent. */ | |
2261 | union internal_auxent csect_aux; | |
2262 | unsigned int symnum_before = ssymnum; | |
2263 | ||
2264 | swap_sym (&symbol, &main_aux, &namestring, &sraw_symbol, | |
2265 | &ssymnum, objfile); | |
2266 | if (symbol.n_numaux > 1) | |
2267 | { | |
2268 | bfd_coff_swap_aux_in | |
2269 | (objfile->obfd, | |
2270 | sraw_symbol - coff_data(abfd)->local_symesz, | |
2271 | symbol.n_type, | |
2272 | symbol.n_sclass, | |
2273 | symbol.n_numaux - 1, | |
2274 | symbol.n_numaux, | |
2275 | &csect_aux); | |
2276 | } | |
2277 | else | |
2278 | csect_aux = main_aux; | |
2279 | ||
df1e1074 PS |
2280 | /* If symbol name starts with ".$" or "$", ignore it. */ |
2281 | if (namestring[0] == '$' | |
2282 | || (namestring[0] == '.' && namestring[1] == '$')) | |
2283 | break; | |
2284 | ||
a367db89 JK |
2285 | switch (csect_aux.x_csect.x_smtyp & 0x7) |
2286 | { | |
2287 | case XTY_SD: | |
2288 | switch (csect_aux.x_csect.x_smclas) | |
2289 | { | |
2290 | case XMC_PR: | |
2291 | if (last_csect_name) | |
2292 | { | |
2293 | /* If no misc. function recorded in the last | |
2294 | seen csect, enter it as a function. This | |
2295 | will take care of functions like strcmp() | |
2296 | compiled by xlc. */ | |
2297 | ||
2298 | if (!misc_func_recorded) | |
2299 | { | |
2300 | RECORD_MINIMAL_SYMBOL | |
2301 | (last_csect_name, last_csect_val, | |
2302 | mst_text, last_csect_sec, | |
2303 | objfile); | |
2304 | } | |
2305 | ||
2306 | if (pst != NULL) | |
2307 | { | |
2308 | /* We have to allocate one psymtab for | |
2309 | each program csect, because their text | |
2310 | sections need not be adjacent. */ | |
2311 | xcoff_end_psymtab | |
68aadb90 FF |
2312 | (pst, psymtab_include_list, includes_used, |
2313 | symnum_before, dependency_list, | |
2314 | dependencies_used, textlow_not_set); | |
a367db89 JK |
2315 | includes_used = 0; |
2316 | dependencies_used = 0; | |
2317 | /* Give all psymtabs for this source file the same | |
2318 | name. */ | |
2319 | pst = xcoff_start_psymtab | |
2320 | (objfile, section_offsets, | |
2321 | filestring, | |
2322 | symnum_before, | |
2323 | objfile->global_psymbols.next, | |
2324 | objfile->static_psymbols.next); | |
2325 | } | |
2326 | } | |
2327 | if (namestring && namestring[0] == '.') | |
2328 | { | |
2329 | last_csect_name = namestring; | |
2330 | last_csect_val = symbol.n_value; | |
2331 | last_csect_sec = | |
2332 | secnum_to_section (symbol.n_scnum, objfile); | |
2333 | } | |
2334 | if (pst != NULL) | |
2335 | { | |
2336 | CORE_ADDR highval = | |
2337 | symbol.n_value + csect_aux.x_csect.x_scnlen.l; | |
2338 | if (highval > pst->texthigh) | |
2339 | pst->texthigh = highval; | |
2340 | if (pst->textlow == 0 || symbol.n_value < pst->textlow) | |
2341 | pst->textlow = symbol.n_value; | |
2342 | } | |
2343 | misc_func_recorded = 0; | |
2344 | break; | |
df1e1074 | 2345 | |
a367db89 | 2346 | case XMC_RW: |
df1e1074 PS |
2347 | /* Data variables are recorded in the minimal symbol |
2348 | table, except for section symbols. */ | |
2349 | if (*namestring != '.') | |
2350 | prim_record_minimal_symbol_and_info | |
2351 | (namestring, symbol.n_value, | |
2352 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
2353 | NULL, secnum_to_section (symbol.n_scnum, objfile), | |
86fdcdaf | 2354 | NULL, objfile); |
a367db89 | 2355 | break; |
df1e1074 | 2356 | |
a367db89 JK |
2357 | case XMC_TC0: |
2358 | if (toc_offset) | |
2359 | warning ("More than one XMC_TC0 symbol found."); | |
2360 | toc_offset = symbol.n_value; | |
211b564e PS |
2361 | |
2362 | /* Make TOC offset relative to start address of section. */ | |
2363 | bfd_sect = secnum_to_bfd_section (symbol.n_scnum, objfile); | |
2364 | if (bfd_sect) | |
2365 | toc_offset -= bfd_section_vma (objfile->obfd, bfd_sect); | |
a367db89 | 2366 | break; |
df1e1074 | 2367 | |
a367db89 JK |
2368 | case XMC_TC: |
2369 | /* These symbols tell us where the TOC entry for a | |
2370 | variable is, not the variable itself. */ | |
2371 | break; | |
df1e1074 | 2372 | |
a367db89 JK |
2373 | default: |
2374 | break; | |
2375 | } | |
2376 | break; | |
2377 | ||
2378 | case XTY_LD: | |
2379 | switch (csect_aux.x_csect.x_smclas) | |
2380 | { | |
2381 | case XMC_PR: | |
df1e1074 PS |
2382 | /* A function entry point. */ |
2383 | ||
2384 | if (first_fun_line_offset == 0 && symbol.n_numaux > 1) | |
2385 | first_fun_line_offset = | |
2386 | main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
2387 | RECORD_MINIMAL_SYMBOL | |
2388 | (namestring, symbol.n_value, | |
2389 | sclass == C_HIDEXT ? mst_file_text : mst_text, | |
2390 | secnum_to_section (symbol.n_scnum, objfile), | |
2391 | objfile); | |
a367db89 | 2392 | break; |
df1e1074 | 2393 | |
a367db89 JK |
2394 | case XMC_GL: |
2395 | /* shared library function trampoline code entry | |
2396 | point. */ | |
2397 | ||
2398 | /* record trampoline code entries as | |
2399 | mst_solib_trampoline symbol. When we lookup mst | |
2400 | symbols, we will choose mst_text over | |
2401 | mst_solib_trampoline. */ | |
2402 | RECORD_MINIMAL_SYMBOL | |
2403 | (namestring, symbol.n_value, | |
2404 | mst_solib_trampoline, | |
2405 | secnum_to_section (symbol.n_scnum, objfile), | |
2406 | objfile); | |
2407 | break; | |
2408 | ||
2409 | case XMC_DS: | |
2410 | /* The symbols often have the same names as | |
2411 | debug symbols for functions, and confuse | |
2412 | lookup_symbol. */ | |
2413 | break; | |
2414 | ||
2415 | default: | |
2416 | ||
2417 | /* xlc puts each variable in a separate csect, | |
2418 | so we get an XTY_SD for each variable. But | |
2419 | gcc puts several variables in a csect, so | |
2420 | that each variable only gets an XTY_LD. We | |
2421 | still need to record them. This will | |
2422 | typically be XMC_RW; I suspect XMC_RO and | |
2423 | XMC_BS might be possible too. */ | |
df1e1074 PS |
2424 | if (*namestring != '.') |
2425 | prim_record_minimal_symbol_and_info | |
2426 | (namestring, symbol.n_value, | |
2427 | sclass == C_HIDEXT ? mst_file_data : mst_data, | |
2428 | NULL, secnum_to_section (symbol.n_scnum, objfile), | |
86fdcdaf | 2429 | NULL, objfile); |
df1e1074 PS |
2430 | break; |
2431 | } | |
2432 | break; | |
a367db89 | 2433 | |
df1e1074 PS |
2434 | case XTY_CM: |
2435 | switch (csect_aux.x_csect.x_smclas) | |
2436 | { | |
2437 | case XMC_RW: | |
2438 | case XMC_BS: | |
2439 | /* Common variables are recorded in the minimal symbol | |
2440 | table, except for section symbols. */ | |
2441 | if (*namestring != '.') | |
2442 | prim_record_minimal_symbol_and_info | |
2443 | (namestring, symbol.n_value, | |
2444 | sclass == C_HIDEXT ? mst_file_bss : mst_bss, | |
2445 | NULL, secnum_to_section (symbol.n_scnum, objfile), | |
86fdcdaf | 2446 | NULL, objfile); |
a367db89 JK |
2447 | break; |
2448 | } | |
df1e1074 PS |
2449 | break; |
2450 | ||
a367db89 JK |
2451 | default: |
2452 | break; | |
2453 | } | |
2454 | } | |
2455 | break; | |
2456 | case C_FILE: | |
2457 | { | |
2458 | unsigned int symnum_before; | |
2459 | ||
2460 | symnum_before = ssymnum; | |
2461 | swap_sym (&symbol, &main_aux, &namestring, &sraw_symbol, | |
2462 | &ssymnum, objfile); | |
2463 | ||
2464 | /* See if the last csect needs to be recorded. */ | |
2465 | ||
2466 | if (last_csect_name && !misc_func_recorded) | |
2467 | { | |
2468 | ||
2469 | /* If no misc. function recorded in the last seen csect, enter | |
2470 | it as a function. This will take care of functions like | |
2471 | strcmp() compiled by xlc. */ | |
2472 | ||
2473 | RECORD_MINIMAL_SYMBOL | |
2474 | (last_csect_name, last_csect_val, | |
2475 | mst_text, last_csect_sec, objfile); | |
2476 | } | |
2477 | ||
2478 | if (pst) | |
2479 | { | |
2480 | xcoff_end_psymtab (pst, psymtab_include_list, includes_used, | |
68aadb90 FF |
2481 | symnum_before, dependency_list, |
2482 | dependencies_used, textlow_not_set); | |
a367db89 JK |
2483 | includes_used = 0; |
2484 | dependencies_used = 0; | |
2485 | } | |
2486 | first_fun_line_offset = 0; | |
2487 | ||
2488 | /* XCOFF, according to the AIX 3.2 documentation, puts the | |
2489 | filename in cs->c_name. But xlc 1.3.0.2 has decided to | |
2490 | do things the standard COFF way and put it in the auxent. | |
2491 | We use the auxent if the symbol is ".file" and an auxent | |
2492 | exists, otherwise use the symbol itself. */ | |
2493 | if (!strcmp (namestring, ".file") && symbol.n_numaux > 0) | |
2494 | { | |
2495 | filestring = coff_getfilename (&main_aux, objfile); | |
2496 | } | |
2497 | else | |
2498 | filestring = namestring; | |
2499 | ||
2500 | pst = xcoff_start_psymtab (objfile, section_offsets, | |
2501 | filestring, | |
2502 | symnum_before, | |
2503 | objfile->global_psymbols.next, | |
2504 | objfile->static_psymbols.next); | |
2505 | last_csect_name = NULL; | |
2506 | } | |
2507 | break; | |
2508 | ||
2509 | default: | |
2510 | { | |
2511 | static struct complaint msg = | |
2512 | {"Storage class %d not recognized during scan", 0, 0}; | |
2513 | complain (&msg, sclass); | |
2514 | } | |
2515 | /* FALLTHROUGH */ | |
2516 | ||
2517 | /* C_FCN is .bf and .ef symbols. I think it is sufficient | |
2518 | to handle only the C_FUN and C_EXT. */ | |
2519 | case C_FCN: | |
2520 | ||
2521 | case C_BSTAT: | |
2522 | case C_ESTAT: | |
2523 | case C_ARG: | |
2524 | case C_REGPARM: | |
2525 | case C_REG: | |
2526 | case C_TPDEF: | |
2527 | case C_STRTAG: | |
2528 | case C_UNTAG: | |
2529 | case C_ENTAG: | |
2530 | case C_LABEL: | |
2531 | case C_NULL: | |
2532 | ||
2533 | /* C_EINCL means we are switching back to the main file. But there | |
2534 | is no reason to care; the only thing we want to know about | |
2535 | includes is the names of all the included (.h) files. */ | |
2536 | case C_EINCL: | |
2537 | ||
2538 | case C_BLOCK: | |
2539 | ||
2540 | /* I don't think C_STAT is used in xcoff; C_HIDEXT appears to be | |
2541 | used instead. */ | |
2542 | case C_STAT: | |
2543 | ||
2544 | /* I don't think the name of the common block (as opposed to the | |
2545 | variables within it) is something which is user visible | |
2546 | currently. */ | |
2547 | case C_BCOMM: | |
2548 | case C_ECOMM: | |
2549 | ||
2550 | case C_PSYM: | |
2551 | case C_RPSYM: | |
2552 | ||
2553 | /* I think we can ignore C_LSYM; types on xcoff seem to use C_DECL | |
2554 | so C_LSYM would appear to be only for locals. */ | |
2555 | case C_LSYM: | |
2556 | ||
2557 | case C_AUTO: | |
2558 | case C_RSYM: | |
2559 | { | |
2560 | /* We probably could save a few instructions by assuming that | |
2561 | C_LSYM, C_PSYM, etc., never have auxents. */ | |
2562 | int naux1 = | |
2563 | ((struct external_syment *)sraw_symbol)->e_numaux[0] + 1; | |
2564 | ssymnum += naux1; | |
2565 | sraw_symbol += sizeof (struct external_syment) * naux1; | |
2566 | } | |
2567 | break; | |
2568 | ||
2569 | case C_BINCL: | |
2570 | stype = N_SOL; | |
2571 | goto pstab; | |
2572 | ||
2573 | case C_FUN: | |
2574 | /* The value of the C_FUN is not the address of the function (it | |
2575 | appears to be the address before linking), but as long as it | |
2576 | is smaller than the actual address, then find_pc_partial_function | |
2577 | will use the minimal symbols instead. I hope. */ | |
2578 | ||
2579 | case C_GSYM: | |
2580 | case C_ECOML: | |
2581 | case C_DECL: | |
2582 | case C_STSYM: | |
2583 | stype = N_LSYM; | |
2584 | pstab:; | |
2585 | swap_sym (&symbol, &main_aux, &namestring, &sraw_symbol, | |
2586 | &ssymnum, objfile); | |
2587 | #define CUR_SYMBOL_TYPE stype | |
2588 | #define CUR_SYMBOL_VALUE symbol.n_value | |
2589 | ||
2590 | /* START_PSYMTAB and END_PSYMTAB are never used, because they are only | |
2591 | called from DBXREAD_ONLY or N_SO code. Likewise for the symnum | |
2592 | variable. */ | |
2593 | #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms) 0 | |
68aadb90 | 2594 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set)\ |
a367db89 JK |
2595 | do {} while (0) |
2596 | /* We have already set the namestring. */ | |
df1e1074 | 2597 | #define SET_NAMESTRING() /* */ |
a367db89 JK |
2598 | |
2599 | #include "partial-stab.h" | |
2600 | } | |
2601 | } | |
a367db89 JK |
2602 | |
2603 | if (pst) | |
2604 | { | |
2605 | xcoff_end_psymtab (pst, psymtab_include_list, includes_used, | |
68aadb90 FF |
2606 | ssymnum, dependency_list, |
2607 | dependencies_used, textlow_not_set); | |
a367db89 JK |
2608 | } |
2609 | ||
05d52ace | 2610 | /* Record the toc offset value of this symbol table into objfile structure. |
a367db89 JK |
2611 | If no XMC_TC0 is found, toc_offset should be zero. Another place to obtain |
2612 | this information would be file auxiliary header. */ | |
2613 | ||
05d52ace PS |
2614 | ((struct coff_symfile_info *) objfile->sym_private)->toc_offset = toc_offset; |
2615 | } | |
2616 | ||
2617 | /* Return the toc offset value for a given objfile. */ | |
2618 | ||
2619 | CORE_ADDR | |
2620 | get_toc_offset (objfile) | |
2621 | struct objfile *objfile; | |
2622 | { | |
2623 | if (objfile) | |
2624 | return ((struct coff_symfile_info *) objfile->sym_private)->toc_offset; | |
2625 | return 0; | |
e38e0312 JG |
2626 | } |
2627 | ||
a367db89 JK |
2628 | /* Scan and build partial symbols for a symbol file. |
2629 | We have been initialized by a call to dbx_symfile_init, which | |
2630 | put all the relevant info into a "struct dbx_symfile_info", | |
2631 | hung off the objfile structure. | |
e38e0312 | 2632 | |
a367db89 JK |
2633 | SECTION_OFFSETS contains offsets relative to which the symbols in the |
2634 | various sections are (depending where the sections were actually loaded). | |
2635 | MAINLINE is true if we are reading the main symbol | |
2636 | table (as opposed to a shared lib or dynamically loaded file). */ | |
e38e0312 | 2637 | |
1ab3bf1b | 2638 | static void |
a367db89 JK |
2639 | xcoff_initial_scan (objfile, section_offsets, mainline) |
2640 | struct objfile *objfile; | |
2641 | struct section_offsets *section_offsets; | |
2642 | int mainline; /* FIXME comments above */ | |
e38e0312 | 2643 | { |
a367db89 JK |
2644 | bfd *abfd; |
2645 | int val; | |
2646 | struct cleanup *back_to; | |
d5931d79 JG |
2647 | int num_symbols; /* # of symbols */ |
2648 | file_ptr symtab_offset; /* symbol table and */ | |
2649 | file_ptr stringtab_offset; /* string table file offsets */ | |
80d68b1d | 2650 | struct coff_symfile_info *info; |
e38e0312 | 2651 | char *name; |
a367db89 JK |
2652 | unsigned int size; |
2653 | ||
80d68b1d FF |
2654 | info = (struct coff_symfile_info *) objfile -> sym_private; |
2655 | symfile_bfd = abfd = objfile->obfd; | |
2656 | name = objfile->name; | |
e38e0312 JG |
2657 | |
2658 | num_symbols = bfd_get_symcount (abfd); /* # of symbols */ | |
2659 | symtab_offset = obj_sym_filepos (abfd); /* symbol table file offset */ | |
2660 | stringtab_offset = symtab_offset + | |
2661 | num_symbols * coff_data(abfd)->local_symesz; | |
2662 | ||
2663 | info->min_lineno_offset = 0; | |
2664 | info->max_lineno_offset = 0; | |
2665 | bfd_map_over_sections (abfd, find_linenos, info); | |
2666 | ||
9d61147e JK |
2667 | if (num_symbols > 0) |
2668 | { | |
a367db89 JK |
2669 | /* Read the string table. */ |
2670 | init_stringtab (abfd, stringtab_offset, objfile); | |
e38e0312 | 2671 | |
a367db89 JK |
2672 | /* Read the .debug section, if present. */ |
2673 | { | |
2674 | sec_ptr secp; | |
2675 | bfd_size_type length; | |
2676 | char *debugsec = NULL; | |
2677 | ||
2678 | secp = bfd_get_section_by_name (abfd, ".debug"); | |
2679 | if (secp) | |
2680 | { | |
2681 | length = bfd_section_size (abfd, secp); | |
2682 | if (length) | |
2683 | { | |
2684 | debugsec = | |
2685 | (char *) obstack_alloc (&objfile->symbol_obstack, length); | |
2686 | ||
2687 | if (!bfd_get_section_contents (abfd, secp, debugsec, | |
2688 | (file_ptr) 0, length)) | |
2689 | { | |
2690 | error ("Error reading .debug section of `%s': %s", | |
2691 | name, bfd_errmsg (bfd_get_error ())); | |
2692 | } | |
2693 | } | |
2694 | } | |
2695 | ((struct coff_symfile_info *)objfile->sym_private)->debugsec = | |
2696 | debugsec; | |
9d61147e JK |
2697 | } |
2698 | } | |
e38e0312 | 2699 | |
a367db89 JK |
2700 | /* Read the symbols. We keep them in core because we will want to |
2701 | access them randomly in read_symbol*. */ | |
987622b5 | 2702 | val = bfd_seek (abfd, symtab_offset, SEEK_SET); |
e38e0312 | 2703 | if (val < 0) |
a367db89 JK |
2704 | error ("Error reading symbols from %s: %s", |
2705 | name, bfd_errmsg (bfd_get_error ())); | |
2706 | size = coff_data (abfd)->local_symesz * num_symbols; | |
2707 | ((struct coff_symfile_info *)objfile->sym_private)->symtbl = | |
2708 | obstack_alloc (&objfile->symbol_obstack, size); | |
2709 | ((struct coff_symfile_info *)objfile->sym_private)->symtbl_num_syms = | |
2710 | num_symbols; | |
2711 | ||
2712 | val = bfd_read (((struct coff_symfile_info *)objfile->sym_private)->symtbl, | |
2713 | size, 1, abfd); | |
2714 | if (val != size) | |
2715 | perror_with_name ("reading symbol table"); | |
2716 | ||
2717 | /* If we are reinitializing, or if we have never loaded syms yet, init */ | |
2718 | if (mainline | |
2719 | || objfile->global_psymbols.size == 0 | |
2720 | || objfile->static_psymbols.size == 0) | |
2721 | /* I'm not sure how how good num_symbols is; the rule of thumb in | |
2722 | init_psymbol_list was developed for a.out. On the one hand, | |
2723 | num_symbols includes auxents. On the other hand, it doesn't | |
2724 | include N_SLINE. */ | |
2725 | init_psymbol_list (objfile, num_symbols); | |
e38e0312 | 2726 | |
a7f56d5a | 2727 | free_pending_blocks (); |
c8623080 | 2728 | back_to = make_cleanup ((make_cleanup_func) really_free_pendings, 0); |
e38e0312 | 2729 | |
1ab3bf1b | 2730 | init_minimal_symbol_collection (); |
c8623080 | 2731 | make_cleanup ((make_cleanup_func) discard_minimal_symbols, 0); |
e38e0312 | 2732 | |
a367db89 JK |
2733 | /* Now that the symbol table data of the executable file are all in core, |
2734 | process them and define symbols accordingly. */ | |
e38e0312 | 2735 | |
a367db89 | 2736 | scan_xcoff_symtab (section_offsets, objfile); |
e38e0312 | 2737 | |
1ab3bf1b JG |
2738 | /* Install any minimal symbols that have been collected as the current |
2739 | minimal symbols for this objfile. */ | |
2740 | ||
80d68b1d | 2741 | install_minimal_symbols (objfile); |
0eb22669 PS |
2742 | |
2743 | do_cleanups (back_to); | |
e38e0312 | 2744 | } |
a367db89 | 2745 | \f |
e2adc41a | 2746 | static struct section_offsets * |
9b280a7f | 2747 | xcoff_symfile_offsets (objfile, addr) |
2670f34d JG |
2748 | struct objfile *objfile; |
2749 | CORE_ADDR addr; | |
2750 | { | |
2751 | struct section_offsets *section_offsets; | |
2752 | int i; | |
3c02636b | 2753 | |
e2adc41a | 2754 | objfile->num_sections = SECT_OFF_MAX; |
2670f34d | 2755 | section_offsets = (struct section_offsets *) |
3c02636b JK |
2756 | obstack_alloc |
2757 | (&objfile -> psymbol_obstack, | |
2758 | sizeof (struct section_offsets) | |
e2adc41a | 2759 | + sizeof (section_offsets->offsets) * objfile->num_sections); |
2670f34d | 2760 | |
1d7e34e1 JK |
2761 | /* syms_from_objfile kindly subtracts from addr the bfd_section_vma |
2762 | of the .text section. This strikes me as wrong--whether the | |
2763 | offset to be applied to symbol reading is relative to the start | |
2764 | address of the section depends on the symbol format. In any | |
2765 | event, this whole "addr" concept is pretty broken (it doesn't | |
2766 | handle any section but .text sensibly), so just ignore the addr | |
a367db89 JK |
2767 | parameter and use 0. rs6000-nat.c will set the correct section |
2768 | offsets via objfile_relocate. */ | |
e2adc41a | 2769 | for (i = 0; i < objfile->num_sections; ++i) |
38fb211b | 2770 | ANOFFSET (section_offsets, i) = 0; |
e2adc41a | 2771 | |
2670f34d JG |
2772 | return section_offsets; |
2773 | } | |
0eed42de JK |
2774 | |
2775 | /* Register our ability to parse symbols for xcoff BFD files. */ | |
e38e0312 | 2776 | |
9b280a7f | 2777 | static struct sym_fns xcoff_sym_fns = |
e38e0312 | 2778 | { |
0eed42de JK |
2779 | |
2780 | /* Because the bfd uses coff_flavour, we need to specially kludge | |
e2adc41a JK |
2781 | the flavour. It is possible that coff and xcoff should be merged as |
2782 | they do have fundamental similarities (for example, the extra storage | |
2783 | classes used for stabs could presumably be recognized in any COFF file). | |
2784 | However, in addition to obvious things like all the csect hair, there are | |
2785 | some subtler differences between xcoffread.c and coffread.c, notably | |
2786 | the fact that coffread.c has no need to read in all the symbols, but | |
2787 | xcoffread.c reads all the symbols and does in fact randomly access them | |
a367db89 | 2788 | (in C_BSTAT and line number processing). */ |
0eed42de | 2789 | |
52912aac | 2790 | (enum bfd_flavour)-1, |
0eed42de | 2791 | |
9b280a7f JG |
2792 | xcoff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2793 | xcoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ | |
a367db89 | 2794 | xcoff_initial_scan, /* sym_read: read a symbol file into symtab */ |
9b280a7f JG |
2795 | xcoff_symfile_finish, /* sym_finish: finished with file, cleanup */ |
2796 | xcoff_symfile_offsets, /* sym_offsets: xlate offsets ext->int form */ | |
80d68b1d | 2797 | NULL /* next: pointer to next struct sym_fns */ |
e38e0312 JG |
2798 | }; |
2799 | ||
2800 | void | |
2801 | _initialize_xcoffread () | |
2802 | { | |
9b280a7f | 2803 | add_symtab_fns(&xcoff_sym_fns); |
e5eeaaf8 | 2804 | |
a81ce07d JK |
2805 | func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0, |
2806 | "<function, no debug info>", NULL); | |
2807 | TYPE_TARGET_TYPE (func_symbol_type) = builtin_type_int; | |
2808 | var_symbol_type = | |
2809 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
2810 | "<variable, no debug info>", NULL); | |
e38e0312 | 2811 | } |