1 /* IBM RS/6000 "XCOFF" back-end for BFD.
2 Copyright (C) 1990-2016 Free Software Foundation, Inc.
3 Written by Metin G. Ozisik, Mimi Phuong-Thao Vo, and John Gilmore.
4 Archive support from Damon A. Permezel.
5 Contributed by IBM Corporation and Cygnus Support.
6
7 This file is part of BFD, the Binary File Descriptor library.
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 3 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
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
23
24
25 /* This port currently only handles reading object files, except when
26 compiled on an RS/6000 host. -- no archive support, no core files.
27 In all cases, it does not support writing.
28
29 This is in a separate file from coff-rs6000.c, because it includes
30 system include files that conflict with coff/rs6000.h. */
31
32 /* Internalcoff.h and coffcode.h modify themselves based on this flag. */
33 #define RS6000COFF_C 1
34
35 /* The AIX 4.1 kernel is obviously compiled with -D_LONG_LONG, so
36 we have to define _LONG_LONG for older versions of gcc to get the
37 proper alignments in the user structure. */
38 #if defined(_AIX41) && !defined(_LONG_LONG)
39 #define _LONG_LONG
40 #endif
41
42 #include "sysdep.h"
43 #include "bfd.h"
44 #include "libbfd.h"
45
46 #ifdef AIX_CORE
47
48 /* AOUTHDR is defined by the above. We need another defn of it, from the
49 system include files. Punt the old one and get us a new name for the
50 typedef in the system include files. */
51 #ifdef AOUTHDR
52 #undef AOUTHDR
53 #endif
54 #define AOUTHDR second_AOUTHDR
55
56 #undef SCNHDR
57
58 /* Support for core file stuff. */
59
60 #include <sys/user.h>
61 #define __LDINFO_PTRACE32__ /* for __ld_info32 */
62 #define __LDINFO_PTRACE64__ /* for __ld_info64 */
63 #include <sys/ldr.h>
64 #include <sys/core.h>
65 #include <sys/systemcfg.h>
66
67 /* Borrowed from <sys/inttypes.h> on recent AIX versions. */
68 typedef unsigned long ptr_to_uint;
69
70 #define core_hdr(bfd) ((CoreHdr *) bfd->tdata.any)
71
72 /* AIX 4.1 changed the names and locations of a few items in the core file.
73 AIX 4.3 defined an entirely new structure, core_dumpx, but kept support for
74 the previous 4.1 structure, core_dump.
75
76 AIX_CORE_DUMPX_CORE is defined (by configure) on AIX 4.3+, and
77 CORE_VERSION_1 is defined (by AIX core.h) as 2 on AIX 4.3+ and as 1 on AIX
78 4.1 and 4.2. AIX pre-4.1 (aka 3.x) either doesn't define CORE_VERSION_1
79 or else defines it as 0. */
80
81 #if defined(CORE_VERSION_1) && !CORE_VERSION_1
82 # undef CORE_VERSION_1
83 #endif
84
85 /* The following union and macros allow this module to compile on all AIX
86 versions and to handle both core_dumpx and core_dump on 4.3+. CNEW_*()
87 and COLD_*() macros respectively retrieve core_dumpx and core_dump
88 values. */
89
90 /* Union of 32-bit and 64-bit versions of ld_info. */
91
92 typedef union
93 {
94 #if defined (__ld_info32) || defined (__ld_info64)
95 struct __ld_info32 l32;
96 struct __ld_info64 l64;
97 #else
98 struct ld_info l32;
99 struct ld_info l64;
100 #endif
101 } LdInfo;
102
103 /* Union of old and new core dump structures. */
104
105 typedef union
106 {
107 #ifdef AIX_CORE_DUMPX_CORE
108 struct core_dumpx new_dump; /* New AIX 4.3+ core dump. */
109 #else
110 struct core_dump new_dump; /* For simpler coding. */
111 #endif
112 #ifndef BFD64 /* Use old only if gdb is 32-bit. */
113 struct core_dump old; /* Old AIX 4.2- core dump, still used on
114 4.3+ with appropriate SMIT config. */
115 #endif
116 } CoreHdr;
117
118 /* Union of old and new vm_info structures. */
119
120 #ifdef CORE_VERSION_1
121 typedef union
122 {
123 #ifdef AIX_CORE_DUMPX_CORE
124 struct vm_infox new_dump;
125 #else
126 struct vm_info new_dump;
127 #endif
128 #ifndef BFD64
129 struct vm_info old;
130 #endif
131 } VmInfo;
132 #endif
133
134 /* Return whether CoreHdr C is in new or old format. */
135
136 #ifdef AIX_CORE_DUMPX_CORE
137 # ifndef BFD64
138 # define CORE_NEW(c) (!(c).old.c_entries)
139 # else
140 # define CORE_NEW(c) (!(c).new_dump.c_entries)
141 # endif
142 #else
143 # define CORE_NEW(c) 0
144 #endif
145
146 /* Return whether CoreHdr C usese core_dumpxx structure.
147
148 FIXME: the core file format version number used here definitely indicates
149 that struct core_dumpxx should be used to represent the core file header,
150 but that may not be the only such format version number. */
151
152 #ifdef AIX_5_CORE
153 # define CORE_DUMPXX_VERSION 267312562
154 # define CNEW_IS_CORE_DUMPXX(c) ((c).new_dump.c_version == CORE_DUMPXX_VERSION)
155 #else
156 # define CNEW_IS_CORE_DUMPXX(c) 0
157 #endif
158
159 /* Return the c_stackorg field from struct core_dumpx C. */
160
161 #ifdef AIX_CORE_DUMPX_CORE
162 # define CNEW_STACKORG(c) (c).c_stackorg
163 #else
164 # define CNEW_STACKORG(c) 0
165 #endif
166
167 /* Return the offset to the loader region from struct core_dump C. */
168
169 #ifdef AIX_CORE_DUMPX_CORE
170 # define CNEW_LOADER(c) (c).c_loader
171 #else
172 # define CNEW_LOADER(c) 0
173 #endif
174
175 /* Return the offset to the loader region from struct core_dump C. */
176
177 #define COLD_LOADER(c) (c).c_tab
178
179 /* Return the c_lsize field from struct core_dumpx C. */
180
181 #ifdef AIX_CORE_DUMPX_CORE
182 # define CNEW_LSIZE(c) (c).c_lsize
183 #else
184 # define CNEW_LSIZE(c) 0
185 #endif
186
187 /* Return the c_dataorg field from struct core_dumpx C. */
188
189 #ifdef AIX_CORE_DUMPX_CORE
190 # define CNEW_DATAORG(c) (c).c_dataorg
191 #else
192 # define CNEW_DATAORG(c) 0
193 #endif
194
195 /* Return the c_datasize field from struct core_dumpx C. */
196
197 #ifdef AIX_CORE_DUMPX_CORE
198 # define CNEW_DATASIZE(c) (c).c_datasize
199 #else
200 # define CNEW_DATASIZE(c) 0
201 #endif
202
203 /* Return the c_impl field from struct core_dumpx C. */
204
205 #if defined (HAVE_ST_C_IMPL) || defined (AIX_5_CORE)
206 # define CNEW_IMPL(c) (c).c_impl
207 #else
208 # define CNEW_IMPL(c) 0
209 #endif
210
211 /* Return the command string from struct core_dumpx C. */
212
213 #ifdef AIX_CORE_DUMPX_CORE
214 # define CNEW_COMM(c) (c).c_u.U_proc.pi_comm
215 #else
216 # define CNEW_COMM(c) 0
217 #endif
218
219 /* Return the command string from struct core_dump C. */
220
221 #ifdef CORE_VERSION_1
222 # define COLD_COMM(c) (c).c_u.U_comm
223 #else
224 # define COLD_COMM(c) (c).c_u.u_comm
225 #endif
226
227 /* Return the struct __context64 pointer from struct core_dumpx C. */
228
229 #ifdef AIX_CORE_DUMPX_CORE
230 # define CNEW_CONTEXT64(c) (c).c_flt.hctx.r64
231 #else
232 # define CNEW_CONTEXT64(c) c
233 #endif
234
235 /* Return the struct mstsave pointer from struct core_dumpx C. */
236
237 #ifdef AIX_CORE_DUMPX_CORE
238 # define CNEW_MSTSAVE(c) (c).c_flt.hctx.r32
239 #else
240 # define CNEW_MSTSAVE(c) c
241 #endif
242
243 /* Return the struct mstsave pointer from struct core_dump C. */
244
245 #ifdef CORE_VERSION_1
246 # define COLD_MSTSAVE(c) (c).c_mst
247 #else
248 # define COLD_MSTSAVE(c) (c).c_u.u_save
249 #endif
250
251 /* Return whether struct core_dumpx is from a 64-bit process. */
252
253 #ifdef AIX_CORE_DUMPX_CORE
254 # define CNEW_PROC64(c) IS_PROC64(&(c).c_u.U_proc)
255 #else
256 # define CNEW_PROC64(c) 0
257 #endif
258
259 /* Magic end-of-stack addresses for old core dumps. This is _very_ fragile,
260 but I don't see any easy way to get that info right now. */
261
262 #ifdef CORE_VERSION_1
263 # define COLD_STACKEND 0x2ff23000
264 #else
265 # define COLD_STACKEND 0x2ff80000
266 #endif
267
268 /* Size of the leading portion that old and new core dump structures have in
269 common. */
270 #ifdef AIX_CORE_DUMPX_CORE
271 #define CORE_COMMONSZ ((long) &((struct core_dumpx *) 0)->c_entries \
272 + sizeof (((struct core_dumpx *) 0)->c_entries))
273 #else
274 #define CORE_COMMONSZ ((int) &((struct core_dump *) 0)->c_entries \
275 + sizeof (((struct core_dump *) 0)->c_entries)
276 #endif
277 /* Define prototypes for certain functions, to avoid a compiler warning
278 saying that they are missing. */
279
280 const bfd_target * rs6000coff_core_p (bfd *abfd);
281 bfd_boolean rs6000coff_core_file_matches_executable_p (bfd *core_bfd,
282 bfd *exec_bfd);
283 char * rs6000coff_core_file_failing_command (bfd *abfd);
284 int rs6000coff_core_file_failing_signal (bfd *abfd);
285
286 /* Try to read into CORE the header from the core file associated with ABFD.
287 Return success. */
288
289 static bfd_boolean
read_hdr(bfd * abfd,CoreHdr * core)290 read_hdr (bfd *abfd, CoreHdr *core)
291 {
292 bfd_size_type size;
293
294 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
295 return FALSE;
296
297 /* Read the leading portion that old and new core dump structures have in
298 common. */
299 size = CORE_COMMONSZ;
300 if (bfd_bread (core, size, abfd) != size)
301 return FALSE;
302
303 /* Read the trailing portion of the structure. */
304 if (CORE_NEW (*core))
305 size = sizeof (core->new_dump);
306 #ifndef BFD64
307 else
308 size = sizeof (core->old);
309 #endif
310 size -= CORE_COMMONSZ;
311 return bfd_bread ((char *) core + CORE_COMMONSZ, size, abfd) == size;
312 }
313
314 static asection *
make_bfd_asection(bfd * abfd,const char * name,flagword flags,bfd_size_type size,bfd_vma vma,file_ptr filepos)315 make_bfd_asection (bfd *abfd, const char *name, flagword flags,
316 bfd_size_type size, bfd_vma vma, file_ptr filepos)
317 {
318 asection *asect;
319
320 asect = bfd_make_section_anyway_with_flags (abfd, name, flags);
321 if (!asect)
322 return NULL;
323
324 asect->size = size;
325 asect->vma = vma;
326 asect->filepos = filepos;
327 asect->alignment_power = 8;
328
329 return asect;
330 }
331
332 /* Decide if a given bfd represents a `core' file or not. There really is no
333 magic number or anything like, in rs6000coff. */
334
335 const bfd_target *
rs6000coff_core_p(bfd * abfd)336 rs6000coff_core_p (bfd *abfd)
337 {
338 CoreHdr core;
339 struct stat statbuf;
340 bfd_size_type size;
341 char *tmpptr;
342
343 /* Values from new and old core structures. */
344 int c_flag;
345 file_ptr c_stack, c_regoff, c_loader;
346 bfd_size_type c_size, c_regsize, c_lsize;
347 bfd_vma c_stackend;
348 void *c_regptr;
349 int proc64;
350
351 if (!read_hdr (abfd, &core))
352 {
353 if (bfd_get_error () != bfd_error_system_call)
354 bfd_set_error (bfd_error_wrong_format);
355 return NULL;
356 }
357
358 /* This isn't the right handler for 64-bit core files on AIX 5.x. */
359 if (CORE_NEW (core) && CNEW_IS_CORE_DUMPXX (core))
360 {
361 bfd_set_error (bfd_error_wrong_format);
362 return NULL;
363 }
364
365 /* Copy fields from new or old core structure. */
366 if (CORE_NEW (core))
367 {
368 c_flag = core.new_dump.c_flag;
369 c_stack = (file_ptr) core.new_dump.c_stack;
370 c_size = core.new_dump.c_size;
371 c_stackend = CNEW_STACKORG (core.new_dump) + c_size;
372 c_lsize = CNEW_LSIZE (core.new_dump);
373 c_loader = CNEW_LOADER (core.new_dump);
374 #ifndef BFD64
375 proc64 = CNEW_PROC64 (core.new_dump);
376 }
377 else
378 {
379 c_flag = core.old.c_flag;
380 c_stack = (file_ptr) (ptr_to_uint) core.old.c_stack;
381 c_size = core.old.c_size;
382 c_stackend = COLD_STACKEND;
383 c_lsize = 0x7ffffff;
384 c_loader = (file_ptr) (ptr_to_uint) COLD_LOADER (core.old);
385 #endif
386 proc64 = 0;
387 }
388
389 if (proc64)
390 {
391 c_regsize = sizeof (CNEW_CONTEXT64 (core.new_dump));
392 c_regptr = &CNEW_CONTEXT64 (core.new_dump);
393 }
394 else if (CORE_NEW (core))
395 {
396 c_regsize = sizeof (CNEW_MSTSAVE (core.new_dump));
397 c_regptr = &CNEW_MSTSAVE (core.new_dump);
398 }
399 #ifndef BFD64
400 else
401 {
402 c_regsize = sizeof (COLD_MSTSAVE (core.old));
403 c_regptr = &COLD_MSTSAVE (core.old);
404 }
405 #endif
406 c_regoff = (char *) c_regptr - (char *) &core;
407
408 if (bfd_stat (abfd, &statbuf) < 0)
409 {
410 bfd_set_error (bfd_error_system_call);
411 return NULL;
412 }
413
414 /* If the core file ulimit is too small, the system will first
415 omit the data segment, then omit the stack, then decline to
416 dump core altogether (as far as I know UBLOCK_VALID and LE_VALID
417 are always set) (this is based on experimentation on AIX 3.2).
418 Now, the thing is that GDB users will be surprised
419 if segments just silently don't appear (well, maybe they would
420 think to check "info files", I don't know).
421
422 For the data segment, we have no choice but to keep going if it's
423 not there, since the default behavior is not to dump it (regardless
424 of the ulimit, it's based on SA_FULLDUMP). But for the stack segment,
425 if it's not there, we refuse to have anything to do with this core
426 file. The usefulness of a core dump without a stack segment is pretty
427 limited anyway. */
428
429 if (!(c_flag & UBLOCK_VALID)
430 || !(c_flag & LE_VALID))
431 {
432 bfd_set_error (bfd_error_wrong_format);
433 return NULL;
434 }
435
436 if (!(c_flag & USTACK_VALID))
437 {
438 bfd_set_error (bfd_error_file_truncated);
439 return NULL;
440 }
441
442 /* Don't check the core file size for a full core, AIX 4.1 includes
443 additional shared library sections in a full core. */
444 if (!(c_flag & (FULL_CORE | CORE_TRUNC)))
445 {
446 /* If the size is wrong, it means we're misinterpreting something. */
447 if (c_stack + (file_ptr) c_size != statbuf.st_size)
448 {
449 bfd_set_error (bfd_error_wrong_format);
450 return NULL;
451 }
452 }
453
454 /* Sanity check on the c_tab field. */
455 if (!CORE_NEW (core)
456 && (
457 #ifndef BFD64
458 c_loader < (file_ptr) sizeof core.old
459 #else
460 c_loader < (file_ptr) sizeof core.new_dump
461 #endif
462 || c_loader >= statbuf.st_size
463 || c_loader >= c_stack))
464 {
465 bfd_set_error (bfd_error_wrong_format);
466 return NULL;
467 }
468
469 /* Issue warning if the core file was truncated during writing. */
470 if (c_flag & CORE_TRUNC)
471 (*_bfd_error_handler) (_("%s: warning core file truncated"),
472 bfd_get_filename (abfd));
473
474 /* Allocate core file header. */
475 #ifndef BFD64
476 size = CORE_NEW (core) ? sizeof (core.new_dump) : sizeof (core.old);
477 #else
478 size = sizeof (core.new_dump);
479 #endif
480 tmpptr = (char *) bfd_zalloc (abfd, (bfd_size_type) size);
481 if (!tmpptr)
482 return NULL;
483
484 /* Copy core file header. */
485 memcpy (tmpptr, &core, size);
486 set_tdata (abfd, tmpptr);
487
488 /* Set architecture. */
489 if (CORE_NEW (core))
490 {
491 enum bfd_architecture arch;
492 unsigned long mach;
493
494 switch (CNEW_IMPL (core.new_dump))
495 {
496 case POWER_RS1:
497 case POWER_RSC:
498 case POWER_RS2:
499 arch = bfd_arch_rs6000;
500 mach = bfd_mach_rs6k;
501 break;
502 default:
503 arch = bfd_arch_powerpc;
504 mach = bfd_mach_ppc;
505 break;
506 }
507 bfd_default_set_arch_mach (abfd, arch, mach);
508 }
509
510 /* .stack section. */
511 if (!make_bfd_asection (abfd, ".stack",
512 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS,
513 c_size, c_stackend - c_size, c_stack))
514 goto fail;
515
516 /* .reg section for all registers. */
517 if (!make_bfd_asection (abfd, ".reg",
518 SEC_HAS_CONTENTS,
519 c_regsize, (bfd_vma) 0, c_regoff))
520 goto fail;
521
522 /* .ldinfo section.
523 To actually find out how long this section is in this particular
524 core dump would require going down the whole list of struct ld_info's.
525 See if we can just fake it. */
526 if (!make_bfd_asection (abfd, ".ldinfo",
527 SEC_HAS_CONTENTS,
528 c_lsize, (bfd_vma) 0, c_loader))
529 goto fail;
530
531 #ifndef CORE_VERSION_1
532 /* .data section if present.
533 AIX 3 dumps the complete data section and sets FULL_CORE if the
534 ulimit is large enough, otherwise the data section is omitted.
535 AIX 4 sets FULL_CORE even if the core file is truncated, we have
536 to examine core.c_datasize below to find out the actual size of
537 the .data section. */
538 if (c_flag & FULL_CORE)
539 {
540 if (!make_bfd_asection (abfd, ".data",
541 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS,
542 (bfd_size_type) core.old.c_u.u_dsize,
543 (bfd_vma)
544 CDATA_ADDR (core.old.c_u.u_dsize),
545 c_stack + c_size))
546 goto fail;
547 }
548 #endif
549
550 #ifdef CORE_VERSION_1
551 /* AIX 4 adds data sections from loaded objects to the core file,
552 which can be found by examining ldinfo, and anonymously mmapped
553 regions. */
554 {
555 LdInfo ldinfo;
556 bfd_size_type ldi_datasize;
557 file_ptr ldi_core;
558 uint ldi_next;
559 bfd_vma ldi_dataorg;
560 bfd_vma core_dataorg;
561
562 /* Fields from new and old core structures. */
563 bfd_size_type c_datasize, c_vmregions;
564 file_ptr c_data, c_vmm;
565
566 if (CORE_NEW (core))
567 {
568 c_datasize = CNEW_DATASIZE (core.new_dump);
569 c_data = (file_ptr) core.new_dump.c_data;
570 c_vmregions = core.new_dump.c_vmregions;
571 c_vmm = (file_ptr) core.new_dump.c_vmm;
572 }
573 #ifndef BFD64
574 else
575 {
576 c_datasize = core.old.c_datasize;
577 c_data = (file_ptr) (ptr_to_uint) core.old.c_data;
578 c_vmregions = core.old.c_vmregions;
579 c_vmm = (file_ptr) (ptr_to_uint) core.old.c_vmm;
580 }
581 #endif
582
583 /* .data section from executable. */
584 if (c_datasize)
585 {
586 /* If Large Memory Model is used, then the .data segment should start from
587 BDATAORG which has been defined in the system header files. */
588
589 if (c_flag & CORE_BIGDATA)
590 core_dataorg = BDATAORG;
591 else
592 core_dataorg = CDATA_ADDR (c_datasize);
593
594 if (!make_bfd_asection (abfd, ".data",
595 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS,
596 c_datasize,
597 (bfd_vma) core_dataorg,
598 c_data))
599 goto fail;
600 }
601
602 /* .data sections from loaded objects. */
603 if (proc64)
604 size = (unsigned long) ((LdInfo *) 0)->l64.ldinfo_filename;
605 else
606 size = (unsigned long) ((LdInfo *) 0)->l32.ldinfo_filename;
607
608 while (1)
609 {
610 if (bfd_seek (abfd, c_loader, SEEK_SET) != 0)
611 goto fail;
612 if (bfd_bread (&ldinfo, size, abfd) != size)
613 goto fail;
614
615 if (proc64)
616 {
617 ldi_core = ldinfo.l64.ldinfo_core;
618 ldi_datasize = ldinfo.l64.ldinfo_datasize;
619 ldi_dataorg = (bfd_vma) ldinfo.l64.ldinfo_dataorg;
620 ldi_next = ldinfo.l64.ldinfo_next;
621 }
622 else
623 {
624 ldi_core = ldinfo.l32.ldinfo_core;
625 ldi_datasize = ldinfo.l32.ldinfo_datasize;
626 ldi_dataorg = (bfd_vma) (ptr_to_uint) ldinfo.l32.ldinfo_dataorg;
627 ldi_next = ldinfo.l32.ldinfo_next;
628 }
629
630 if (ldi_core)
631 if (!make_bfd_asection (abfd, ".data",
632 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS,
633 ldi_datasize, ldi_dataorg, ldi_core))
634 goto fail;
635
636 if (ldi_next == 0)
637 break;
638 c_loader += ldi_next;
639 }
640
641 /* .vmdata sections from anonymously mmapped regions. */
642 if (c_vmregions)
643 {
644 bfd_size_type i;
645
646 if (bfd_seek (abfd, c_vmm, SEEK_SET) != 0)
647 goto fail;
648
649 for (i = 0; i < c_vmregions; i++)
650 {
651 VmInfo vminfo;
652 bfd_size_type vminfo_size;
653 file_ptr vminfo_offset;
654 bfd_vma vminfo_addr;
655
656 #ifndef BFD64
657 size = CORE_NEW (core) ? sizeof (vminfo.new_dump) : sizeof (vminfo.old);
658 #else
659 size = sizeof (vminfo.new_dump);
660 #endif
661 if (bfd_bread (&vminfo, size, abfd) != size)
662 goto fail;
663
664 if (CORE_NEW (core))
665 {
666 vminfo_addr = (bfd_vma) vminfo.new_dump.vminfo_addr;
667 vminfo_size = vminfo.new_dump.vminfo_size;
668 vminfo_offset = vminfo.new_dump.vminfo_offset;
669 }
670 #ifndef BFD64
671 else
672 {
673 vminfo_addr = (bfd_vma) (ptr_to_uint) vminfo.old.vminfo_addr;
674 vminfo_size = vminfo.old.vminfo_size;
675 vminfo_offset = vminfo.old.vminfo_offset;
676 }
677 #endif
678
679 if (vminfo_offset)
680 if (!make_bfd_asection (abfd, ".vmdata",
681 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS,
682 vminfo_size, vminfo_addr,
683 vminfo_offset))
684 goto fail;
685 }
686 }
687 }
688 #endif
689
690 return abfd->xvec; /* This is garbage for now. */
691
692 fail:
693 bfd_release (abfd, abfd->tdata.any);
694 abfd->tdata.any = NULL;
695 bfd_section_list_clear (abfd);
696 return NULL;
697 }
698
699 /* Return `TRUE' if given core is from the given executable. */
700
701 bfd_boolean
rs6000coff_core_file_matches_executable_p(bfd * core_bfd,bfd * exec_bfd)702 rs6000coff_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd)
703 {
704 CoreHdr core;
705 bfd_size_type size;
706 char *path, *s;
707 size_t alloc;
708 const char *str1, *str2;
709 bfd_boolean ret;
710 file_ptr c_loader;
711
712 if (!read_hdr (core_bfd, &core))
713 return FALSE;
714
715 if (CORE_NEW (core))
716 c_loader = CNEW_LOADER (core.new_dump);
717 #ifndef BFD64
718 else
719 c_loader = (file_ptr) (ptr_to_uint) COLD_LOADER (core.old);
720 #endif
721
722 if (CORE_NEW (core) && CNEW_PROC64 (core.new_dump))
723 size = (int) ((LdInfo *) 0)->l64.ldinfo_filename;
724 else
725 size = (int) ((LdInfo *) 0)->l32.ldinfo_filename;
726
727 if (bfd_seek (core_bfd, c_loader + size, SEEK_SET) != 0)
728 return FALSE;
729
730 alloc = 100;
731 path = bfd_malloc ((bfd_size_type) alloc);
732 if (path == NULL)
733 return FALSE;
734 s = path;
735
736 while (1)
737 {
738 if (bfd_bread (s, (bfd_size_type) 1, core_bfd) != 1)
739 {
740 free (path);
741 return FALSE;
742 }
743 if (*s == '\0')
744 break;
745 ++s;
746 if (s == path + alloc)
747 {
748 char *n;
749
750 alloc *= 2;
751 n = bfd_realloc (path, (bfd_size_type) alloc);
752 if (n == NULL)
753 {
754 free (path);
755 return FALSE;
756 }
757 s = n + (path - s);
758 path = n;
759 }
760 }
761
762 str1 = strrchr (path, '/');
763 str2 = strrchr (exec_bfd->filename, '/');
764
765 /* step over character '/' */
766 str1 = str1 != NULL ? str1 + 1 : path;
767 str2 = str2 != NULL ? str2 + 1 : exec_bfd->filename;
768
769 if (strcmp (str1, str2) == 0)
770 ret = TRUE;
771 else
772 ret = FALSE;
773
774 free (path);
775
776 return ret;
777 }
778
779 char *
rs6000coff_core_file_failing_command(bfd * abfd)780 rs6000coff_core_file_failing_command (bfd *abfd)
781 {
782 CoreHdr *core = core_hdr (abfd);
783 #ifndef BFD64
784 char *com = CORE_NEW (*core) ?
785 CNEW_COMM (core->new_dump) : COLD_COMM (core->old);
786 #else
787 char *com = CNEW_COMM (core->new_dump);
788 #endif
789
790 if (*com)
791 return com;
792 else
793 return 0;
794 }
795
796 int
rs6000coff_core_file_failing_signal(bfd * abfd)797 rs6000coff_core_file_failing_signal (bfd *abfd)
798 {
799 CoreHdr *core = core_hdr (abfd);
800 #ifndef BFD64
801 return CORE_NEW (*core) ? core->new_dump.c_signo : core->old.c_signo;
802 #else
803 return core->new_dump.c_signo;
804 #endif
805 }
806
807 #endif /* AIX_CORE */
808