1/* IBM RS/6000 "XCOFF" back-end for BFD. 2 Copyright (C) 1990-2022 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. */ 68typedef 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 92typedef 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 105typedef 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 121typedef 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) 1 141# 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 280bfd_cleanup rs6000coff_core_p (bfd *abfd); 281bool rs6000coff_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd); 282char * rs6000coff_core_file_failing_command (bfd *abfd); 283int rs6000coff_core_file_failing_signal (bfd *abfd); 284 285/* Try to read into CORE the header from the core file associated with ABFD. 286 Return success. */ 287 288static bool 289read_hdr (bfd *abfd, CoreHdr *core) 290{ 291 bfd_size_type size; 292 293 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) 294 return false; 295 296 /* Read the leading portion that old and new core dump structures have in 297 common. */ 298 size = CORE_COMMONSZ; 299 if (bfd_bread (core, size, abfd) != size) 300 return false; 301 302 /* Read the trailing portion of the structure. */ 303 if (CORE_NEW (*core)) 304 size = sizeof (core->new_dump); 305#ifndef BFD64 306 else 307 size = sizeof (core->old); 308#endif 309 size -= CORE_COMMONSZ; 310 return bfd_bread ((char *) core + CORE_COMMONSZ, size, abfd) == size; 311} 312 313static asection * 314make_bfd_asection (bfd *abfd, const char *name, flagword flags, 315 bfd_size_type size, bfd_vma vma, file_ptr filepos) 316{ 317 asection *asect; 318 319 asect = bfd_make_section_anyway_with_flags (abfd, name, flags); 320 if (!asect) 321 return NULL; 322 323 asect->size = size; 324 asect->vma = vma; 325 asect->filepos = filepos; 326 asect->alignment_power = 8; 327 328 return asect; 329} 330 331/* Decide if a given bfd represents a `core' file or not. There really is no 332 magic number or anything like, in rs6000coff. */ 333 334bfd_cleanup 335rs6000coff_core_p (bfd *abfd) 336{ 337 CoreHdr core; 338 struct stat statbuf; 339 bfd_size_type size; 340 char *tmpptr; 341 342 /* Values from new and old core structures. */ 343 int c_flag; 344 file_ptr c_stack, c_regoff, c_loader; 345 bfd_size_type c_size, c_regsize, c_lsize; 346 bfd_vma c_stackend; 347 void *c_regptr; 348 int proc64; 349 350 if (!read_hdr (abfd, &core)) 351 { 352 if (bfd_get_error () != bfd_error_system_call) 353 bfd_set_error (bfd_error_wrong_format); 354 return NULL; 355 } 356 357 /* This isn't the right handler for 64-bit core files on AIX 5.x. */ 358 if (CORE_NEW (core) && CNEW_IS_CORE_DUMPXX (core)) 359 { 360 bfd_set_error (bfd_error_wrong_format); 361 return NULL; 362 } 363 364 /* Copy fields from new or old core structure. */ 365 if (CORE_NEW (core)) 366 { 367 c_flag = core.new_dump.c_flag; 368 c_stack = (file_ptr) core.new_dump.c_stack; 369 c_size = core.new_dump.c_size; 370 c_stackend = CNEW_STACKORG (core.new_dump) + c_size; 371 c_lsize = CNEW_LSIZE (core.new_dump); 372 c_loader = CNEW_LOADER (core.new_dump); 373#ifndef BFD64 374 proc64 = CNEW_PROC64 (core.new_dump); 375 } 376 else 377 { 378 c_flag = core.old.c_flag; 379 c_stack = (file_ptr) (ptr_to_uint) core.old.c_stack; 380 c_size = core.old.c_size; 381 c_stackend = COLD_STACKEND; 382 c_lsize = 0x7ffffff; 383 c_loader = (file_ptr) (ptr_to_uint) COLD_LOADER (core.old); 384#endif 385 proc64 = 0; 386 } 387 388 if (proc64) 389 { 390 c_regsize = sizeof (CNEW_CONTEXT64 (core.new_dump)); 391 c_regptr = &CNEW_CONTEXT64 (core.new_dump); 392 } 393 else if (CORE_NEW (core)) 394 { 395 c_regsize = sizeof (CNEW_MSTSAVE (core.new_dump)); 396 c_regptr = &CNEW_MSTSAVE (core.new_dump); 397 } 398#ifndef BFD64 399 else 400 { 401 c_regsize = sizeof (COLD_MSTSAVE (core.old)); 402 c_regptr = &COLD_MSTSAVE (core.old); 403 } 404#endif 405 c_regoff = (char *) c_regptr - (char *) &core; 406 407 if (bfd_stat (abfd, &statbuf) < 0) 408 { 409 bfd_set_error (bfd_error_system_call); 410 return NULL; 411 } 412 413 /* If the core file ulimit is too small, the system will first 414 omit the data segment, then omit the stack, then decline to 415 dump core altogether (as far as I know UBLOCK_VALID and LE_VALID 416 are always set) (this is based on experimentation on AIX 3.2). 417 Now, the thing is that GDB users will be surprised 418 if segments just silently don't appear (well, maybe they would 419 think to check "info files", I don't know). 420 421 For the data segment, we have no choice but to keep going if it's 422 not there, since the default behavior is not to dump it (regardless 423 of the ulimit, it's based on SA_FULLDUMP). But for the stack segment, 424 if it's not there, we refuse to have anything to do with this core 425 file. The usefulness of a core dump without a stack segment is pretty 426 limited anyway. */ 427 428 if (!(c_flag & UBLOCK_VALID) 429 || !(c_flag & LE_VALID)) 430 { 431 bfd_set_error (bfd_error_wrong_format); 432 return NULL; 433 } 434 435 if (!(c_flag & USTACK_VALID)) 436 { 437 bfd_set_error (bfd_error_file_truncated); 438 return NULL; 439 } 440 441 /* Don't check the core file size for a full core, AIX 4.1 includes 442 additional shared library sections in a full core. */ 443 if (!(c_flag & (FULL_CORE | CORE_TRUNC))) 444 { 445 /* If the size is wrong, it means we're misinterpreting something. */ 446 if (c_stack + (file_ptr) c_size != statbuf.st_size) 447 { 448 bfd_set_error (bfd_error_wrong_format); 449 return NULL; 450 } 451 } 452 453 /* Sanity check on the c_tab field. */ 454 if (!CORE_NEW (core) 455 && ( 456#ifndef BFD64 457 c_loader < (file_ptr) sizeof core.old 458#else 459 c_loader < (file_ptr) sizeof core.new_dump 460#endif 461 || c_loader >= statbuf.st_size 462 || c_loader >= c_stack)) 463 { 464 bfd_set_error (bfd_error_wrong_format); 465 return NULL; 466 } 467 468 /* Issue warning if the core file was truncated during writing. */ 469 if (c_flag & CORE_TRUNC) 470 _bfd_error_handler (_("%pB: warning core file truncated"), abfd); 471 472 /* Allocate core file header. */ 473#ifndef BFD64 474 size = CORE_NEW (core) ? sizeof (core.new_dump) : sizeof (core.old); 475#else 476 size = sizeof (core.new_dump); 477#endif 478 tmpptr = (char *) bfd_zalloc (abfd, (bfd_size_type) size); 479 if (!tmpptr) 480 return NULL; 481 482 /* Copy core file header. */ 483 memcpy (tmpptr, &core, size); 484 set_tdata (abfd, tmpptr); 485 486 /* Set architecture. */ 487 if (CORE_NEW (core)) 488 { 489 enum bfd_architecture arch; 490 unsigned long mach; 491 492 switch (CNEW_IMPL (core.new_dump)) 493 { 494 case POWER_RS1: 495 case POWER_RSC: 496 case POWER_RS2: 497 arch = bfd_arch_rs6000; 498 mach = bfd_mach_rs6k; 499 break; 500 default: 501 arch = bfd_arch_powerpc; 502 mach = bfd_mach_ppc; 503 break; 504 } 505 bfd_default_set_arch_mach (abfd, arch, mach); 506 } 507 508 /* .stack section. */ 509 if (!make_bfd_asection (abfd, ".stack", 510 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, 511 c_size, c_stackend - c_size, c_stack)) 512 goto fail; 513 514 /* .reg section for all registers. */ 515 if (!make_bfd_asection (abfd, ".reg", 516 SEC_HAS_CONTENTS, 517 c_regsize, (bfd_vma) 0, c_regoff)) 518 goto fail; 519 520 /* .ldinfo section. 521 To actually find out how long this section is in this particular 522 core dump would require going down the whole list of struct ld_info's. 523 See if we can just fake it. */ 524 if (!make_bfd_asection (abfd, ".ldinfo", 525 SEC_HAS_CONTENTS, 526 c_lsize, (bfd_vma) 0, c_loader)) 527 goto fail; 528 529#ifndef CORE_VERSION_1 530 /* .data section if present. 531 AIX 3 dumps the complete data section and sets FULL_CORE if the 532 ulimit is large enough, otherwise the data section is omitted. 533 AIX 4 sets FULL_CORE even if the core file is truncated, we have 534 to examine core.c_datasize below to find out the actual size of 535 the .data section. */ 536 if (c_flag & FULL_CORE) 537 { 538 if (!make_bfd_asection (abfd, ".data", 539 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, 540 (bfd_size_type) core.old.c_u.u_dsize, 541 (bfd_vma) 542 CDATA_ADDR (core.old.c_u.u_dsize), 543 c_stack + c_size)) 544 goto fail; 545 } 546#endif 547 548#ifdef CORE_VERSION_1 549 /* AIX 4 adds data sections from loaded objects to the core file, 550 which can be found by examining ldinfo, and anonymously mmapped 551 regions. */ 552 { 553 LdInfo ldinfo; 554 bfd_size_type ldi_datasize; 555 file_ptr ldi_core; 556 uint ldi_next; 557 bfd_vma ldi_dataorg; 558 bfd_vma core_dataorg; 559 560 /* Fields from new and old core structures. */ 561 bfd_size_type c_datasize, c_vmregions; 562 file_ptr c_data, c_vmm; 563 564 if (CORE_NEW (core)) 565 { 566 c_datasize = CNEW_DATASIZE (core.new_dump); 567 c_data = (file_ptr) core.new_dump.c_data; 568 c_vmregions = core.new_dump.c_vmregions; 569 c_vmm = (file_ptr) core.new_dump.c_vmm; 570 } 571#ifndef BFD64 572 else 573 { 574 c_datasize = core.old.c_datasize; 575 c_data = (file_ptr) (ptr_to_uint) core.old.c_data; 576 c_vmregions = core.old.c_vmregions; 577 c_vmm = (file_ptr) (ptr_to_uint) core.old.c_vmm; 578 } 579#endif 580 581 /* .data section from executable. */ 582 if (c_datasize) 583 { 584 /* If Large Memory Model is used, then the .data segment should start from 585 BDATAORG which has been defined in the system header files. */ 586 587 if (c_flag & CORE_BIGDATA) 588 core_dataorg = BDATAORG; 589 else 590 core_dataorg = CDATA_ADDR (c_datasize); 591 592 if (!make_bfd_asection (abfd, ".data", 593 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, 594 c_datasize, 595 (bfd_vma) core_dataorg, 596 c_data)) 597 goto fail; 598 } 599 600 /* .data sections from loaded objects. */ 601 if (proc64) 602 size = (unsigned long) ((LdInfo *) 0)->l64.ldinfo_filename; 603 else 604 size = (unsigned long) ((LdInfo *) 0)->l32.ldinfo_filename; 605 606 while (1) 607 { 608 if (bfd_seek (abfd, c_loader, SEEK_SET) != 0) 609 goto fail; 610 if (bfd_bread (&ldinfo, size, abfd) != size) 611 goto fail; 612 613 if (proc64) 614 { 615 ldi_core = ldinfo.l64.ldinfo_core; 616 ldi_datasize = ldinfo.l64.ldinfo_datasize; 617 ldi_dataorg = (bfd_vma) ldinfo.l64.ldinfo_dataorg; 618 ldi_next = ldinfo.l64.ldinfo_next; 619 } 620 else 621 { 622 ldi_core = ldinfo.l32.ldinfo_core; 623 ldi_datasize = ldinfo.l32.ldinfo_datasize; 624 ldi_dataorg = (bfd_vma) (ptr_to_uint) ldinfo.l32.ldinfo_dataorg; 625 ldi_next = ldinfo.l32.ldinfo_next; 626 } 627 628 if (ldi_core) 629 if (!make_bfd_asection (abfd, ".data", 630 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, 631 ldi_datasize, ldi_dataorg, ldi_core)) 632 goto fail; 633 634 if (ldi_next == 0) 635 break; 636 c_loader += ldi_next; 637 } 638 639 /* .vmdata sections from anonymously mmapped regions. */ 640 if (c_vmregions) 641 { 642 bfd_size_type i; 643 644 if (bfd_seek (abfd, c_vmm, SEEK_SET) != 0) 645 goto fail; 646 647 for (i = 0; i < c_vmregions; i++) 648 { 649 VmInfo vminfo; 650 bfd_size_type vminfo_size; 651 file_ptr vminfo_offset; 652 bfd_vma vminfo_addr; 653 654#ifndef BFD64 655 size = CORE_NEW (core) ? sizeof (vminfo.new_dump) : sizeof (vminfo.old); 656#else 657 size = sizeof (vminfo.new_dump); 658#endif 659 if (bfd_bread (&vminfo, size, abfd) != size) 660 goto fail; 661 662 if (CORE_NEW (core)) 663 { 664 vminfo_addr = (bfd_vma) vminfo.new_dump.vminfo_addr; 665 vminfo_size = vminfo.new_dump.vminfo_size; 666 vminfo_offset = vminfo.new_dump.vminfo_offset; 667 } 668#ifndef BFD64 669 else 670 { 671 vminfo_addr = (bfd_vma) (ptr_to_uint) vminfo.old.vminfo_addr; 672 vminfo_size = vminfo.old.vminfo_size; 673 vminfo_offset = vminfo.old.vminfo_offset; 674 } 675#endif 676 677 if (vminfo_offset) 678 if (!make_bfd_asection (abfd, ".vmdata", 679 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, 680 vminfo_size, vminfo_addr, 681 vminfo_offset)) 682 goto fail; 683 } 684 } 685 } 686#endif 687 688 return _bfd_no_cleanup; 689 690 fail: 691 bfd_release (abfd, abfd->tdata.any); 692 abfd->tdata.any = NULL; 693 bfd_section_list_clear (abfd); 694 return NULL; 695} 696 697/* Return `TRUE' if given core is from the given executable. */ 698 699bool 700rs6000coff_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd) 701{ 702 CoreHdr core; 703 bfd_size_type size; 704 char *path, *s; 705 size_t alloc; 706 const char *str1, *str2; 707 bool ret; 708 file_ptr c_loader; 709 710 if (!read_hdr (core_bfd, &core)) 711 return false; 712 713 if (CORE_NEW (core)) 714 c_loader = CNEW_LOADER (core.new_dump); 715#ifndef BFD64 716 else 717 c_loader = (file_ptr) (ptr_to_uint) COLD_LOADER (core.old); 718#endif 719 720 if (CORE_NEW (core) && CNEW_PROC64 (core.new_dump)) 721 size = (int) ((LdInfo *) 0)->l64.ldinfo_filename; 722 else 723 size = (int) ((LdInfo *) 0)->l32.ldinfo_filename; 724 725 if (bfd_seek (core_bfd, c_loader + size, SEEK_SET) != 0) 726 return false; 727 728 alloc = 100; 729 path = bfd_malloc ((bfd_size_type) alloc); 730 if (path == NULL) 731 return false; 732 s = path; 733 734 while (1) 735 { 736 if (bfd_bread (s, (bfd_size_type) 1, core_bfd) != 1) 737 { 738 free (path); 739 return false; 740 } 741 if (*s == '\0') 742 break; 743 ++s; 744 if (s == path + alloc) 745 { 746 char *n; 747 748 alloc *= 2; 749 n = bfd_realloc (path, (bfd_size_type) alloc); 750 if (n == NULL) 751 { 752 free (path); 753 return false; 754 } 755 s = n + (path - s); 756 path = n; 757 } 758 } 759 760 str1 = strrchr (path, '/'); 761 str2 = strrchr (bfd_get_filename (exec_bfd), '/'); 762 763 /* step over character '/' */ 764 str1 = str1 != NULL ? str1 + 1 : path; 765 str2 = str2 != NULL ? str2 + 1 : bfd_get_filename (exec_bfd); 766 767 if (strcmp (str1, str2) == 0) 768 ret = true; 769 else 770 ret = false; 771 772 free (path); 773 774 return ret; 775} 776 777char * 778rs6000coff_core_file_failing_command (bfd *abfd) 779{ 780 CoreHdr *core = core_hdr (abfd); 781#ifndef BFD64 782 char *com = CORE_NEW (*core) ? 783 CNEW_COMM (core->new_dump) : COLD_COMM (core->old); 784#else 785 char *com = CNEW_COMM (core->new_dump); 786#endif 787 788 if (*com) 789 return com; 790 else 791 return 0; 792} 793 794int 795rs6000coff_core_file_failing_signal (bfd *abfd) 796{ 797 CoreHdr *core = core_hdr (abfd); 798#ifndef BFD64 799 return CORE_NEW (*core) ? core->new_dump.c_signo : core->old.c_signo; 800#else 801 return core->new_dump.c_signo; 802#endif 803} 804 805#endif /* AIX_CORE */ 806