1/* IBM RS/6000 "XCOFF" back-end for BFD. 2 Copyright (C) 1990-2020 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 280const bfd_cleanup rs6000coff_core_p (bfd *abfd); 281bfd_boolean rs6000coff_core_file_matches_executable_p (bfd *core_bfd, 282 bfd *exec_bfd); 283char * rs6000coff_core_file_failing_command (bfd *abfd); 284int 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 289static bfd_boolean 290read_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 314static asection * 315make_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 335bfd_cleanup 336rs6000coff_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 (_("%pB: warning core file truncated"), abfd); 472 473 /* Allocate core file header. */ 474#ifndef BFD64 475 size = CORE_NEW (core) ? sizeof (core.new_dump) : sizeof (core.old); 476#else 477 size = sizeof (core.new_dump); 478#endif 479 tmpptr = (char *) bfd_zalloc (abfd, (bfd_size_type) size); 480 if (!tmpptr) 481 return NULL; 482 483 /* Copy core file header. */ 484 memcpy (tmpptr, &core, size); 485 set_tdata (abfd, tmpptr); 486 487 /* Set architecture. */ 488 if (CORE_NEW (core)) 489 { 490 enum bfd_architecture arch; 491 unsigned long mach; 492 493 switch (CNEW_IMPL (core.new_dump)) 494 { 495 case POWER_RS1: 496 case POWER_RSC: 497 case POWER_RS2: 498 arch = bfd_arch_rs6000; 499 mach = bfd_mach_rs6k; 500 break; 501 default: 502 arch = bfd_arch_powerpc; 503 mach = bfd_mach_ppc; 504 break; 505 } 506 bfd_default_set_arch_mach (abfd, arch, mach); 507 } 508 509 /* .stack section. */ 510 if (!make_bfd_asection (abfd, ".stack", 511 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, 512 c_size, c_stackend - c_size, c_stack)) 513 goto fail; 514 515 /* .reg section for all registers. */ 516 if (!make_bfd_asection (abfd, ".reg", 517 SEC_HAS_CONTENTS, 518 c_regsize, (bfd_vma) 0, c_regoff)) 519 goto fail; 520 521 /* .ldinfo section. 522 To actually find out how long this section is in this particular 523 core dump would require going down the whole list of struct ld_info's. 524 See if we can just fake it. */ 525 if (!make_bfd_asection (abfd, ".ldinfo", 526 SEC_HAS_CONTENTS, 527 c_lsize, (bfd_vma) 0, c_loader)) 528 goto fail; 529 530#ifndef CORE_VERSION_1 531 /* .data section if present. 532 AIX 3 dumps the complete data section and sets FULL_CORE if the 533 ulimit is large enough, otherwise the data section is omitted. 534 AIX 4 sets FULL_CORE even if the core file is truncated, we have 535 to examine core.c_datasize below to find out the actual size of 536 the .data section. */ 537 if (c_flag & FULL_CORE) 538 { 539 if (!make_bfd_asection (abfd, ".data", 540 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, 541 (bfd_size_type) core.old.c_u.u_dsize, 542 (bfd_vma) 543 CDATA_ADDR (core.old.c_u.u_dsize), 544 c_stack + c_size)) 545 goto fail; 546 } 547#endif 548 549#ifdef CORE_VERSION_1 550 /* AIX 4 adds data sections from loaded objects to the core file, 551 which can be found by examining ldinfo, and anonymously mmapped 552 regions. */ 553 { 554 LdInfo ldinfo; 555 bfd_size_type ldi_datasize; 556 file_ptr ldi_core; 557 uint ldi_next; 558 bfd_vma ldi_dataorg; 559 bfd_vma core_dataorg; 560 561 /* Fields from new and old core structures. */ 562 bfd_size_type c_datasize, c_vmregions; 563 file_ptr c_data, c_vmm; 564 565 if (CORE_NEW (core)) 566 { 567 c_datasize = CNEW_DATASIZE (core.new_dump); 568 c_data = (file_ptr) core.new_dump.c_data; 569 c_vmregions = core.new_dump.c_vmregions; 570 c_vmm = (file_ptr) core.new_dump.c_vmm; 571 } 572#ifndef BFD64 573 else 574 { 575 c_datasize = core.old.c_datasize; 576 c_data = (file_ptr) (ptr_to_uint) core.old.c_data; 577 c_vmregions = core.old.c_vmregions; 578 c_vmm = (file_ptr) (ptr_to_uint) core.old.c_vmm; 579 } 580#endif 581 582 /* .data section from executable. */ 583 if (c_datasize) 584 { 585 /* If Large Memory Model is used, then the .data segment should start from 586 BDATAORG which has been defined in the system header files. */ 587 588 if (c_flag & CORE_BIGDATA) 589 core_dataorg = BDATAORG; 590 else 591 core_dataorg = CDATA_ADDR (c_datasize); 592 593 if (!make_bfd_asection (abfd, ".data", 594 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, 595 c_datasize, 596 (bfd_vma) core_dataorg, 597 c_data)) 598 goto fail; 599 } 600 601 /* .data sections from loaded objects. */ 602 if (proc64) 603 size = (unsigned long) ((LdInfo *) 0)->l64.ldinfo_filename; 604 else 605 size = (unsigned long) ((LdInfo *) 0)->l32.ldinfo_filename; 606 607 while (1) 608 { 609 if (bfd_seek (abfd, c_loader, SEEK_SET) != 0) 610 goto fail; 611 if (bfd_bread (&ldinfo, size, abfd) != size) 612 goto fail; 613 614 if (proc64) 615 { 616 ldi_core = ldinfo.l64.ldinfo_core; 617 ldi_datasize = ldinfo.l64.ldinfo_datasize; 618 ldi_dataorg = (bfd_vma) ldinfo.l64.ldinfo_dataorg; 619 ldi_next = ldinfo.l64.ldinfo_next; 620 } 621 else 622 { 623 ldi_core = ldinfo.l32.ldinfo_core; 624 ldi_datasize = ldinfo.l32.ldinfo_datasize; 625 ldi_dataorg = (bfd_vma) (ptr_to_uint) ldinfo.l32.ldinfo_dataorg; 626 ldi_next = ldinfo.l32.ldinfo_next; 627 } 628 629 if (ldi_core) 630 if (!make_bfd_asection (abfd, ".data", 631 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, 632 ldi_datasize, ldi_dataorg, ldi_core)) 633 goto fail; 634 635 if (ldi_next == 0) 636 break; 637 c_loader += ldi_next; 638 } 639 640 /* .vmdata sections from anonymously mmapped regions. */ 641 if (c_vmregions) 642 { 643 bfd_size_type i; 644 645 if (bfd_seek (abfd, c_vmm, SEEK_SET) != 0) 646 goto fail; 647 648 for (i = 0; i < c_vmregions; i++) 649 { 650 VmInfo vminfo; 651 bfd_size_type vminfo_size; 652 file_ptr vminfo_offset; 653 bfd_vma vminfo_addr; 654 655#ifndef BFD64 656 size = CORE_NEW (core) ? sizeof (vminfo.new_dump) : sizeof (vminfo.old); 657#else 658 size = sizeof (vminfo.new_dump); 659#endif 660 if (bfd_bread (&vminfo, size, abfd) != size) 661 goto fail; 662 663 if (CORE_NEW (core)) 664 { 665 vminfo_addr = (bfd_vma) vminfo.new_dump.vminfo_addr; 666 vminfo_size = vminfo.new_dump.vminfo_size; 667 vminfo_offset = vminfo.new_dump.vminfo_offset; 668 } 669#ifndef BFD64 670 else 671 { 672 vminfo_addr = (bfd_vma) (ptr_to_uint) vminfo.old.vminfo_addr; 673 vminfo_size = vminfo.old.vminfo_size; 674 vminfo_offset = vminfo.old.vminfo_offset; 675 } 676#endif 677 678 if (vminfo_offset) 679 if (!make_bfd_asection (abfd, ".vmdata", 680 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, 681 vminfo_size, vminfo_addr, 682 vminfo_offset)) 683 goto fail; 684 } 685 } 686 } 687#endif 688 689 return _bfd_no_cleanup; 690 691 fail: 692 bfd_release (abfd, abfd->tdata.any); 693 abfd->tdata.any = NULL; 694 bfd_section_list_clear (abfd); 695 return NULL; 696} 697 698/* Return `TRUE' if given core is from the given executable. */ 699 700bfd_boolean 701rs6000coff_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd) 702{ 703 CoreHdr core; 704 bfd_size_type size; 705 char *path, *s; 706 size_t alloc; 707 const char *str1, *str2; 708 bfd_boolean ret; 709 file_ptr c_loader; 710 711 if (!read_hdr (core_bfd, &core)) 712 return FALSE; 713 714 if (CORE_NEW (core)) 715 c_loader = CNEW_LOADER (core.new_dump); 716#ifndef BFD64 717 else 718 c_loader = (file_ptr) (ptr_to_uint) COLD_LOADER (core.old); 719#endif 720 721 if (CORE_NEW (core) && CNEW_PROC64 (core.new_dump)) 722 size = (int) ((LdInfo *) 0)->l64.ldinfo_filename; 723 else 724 size = (int) ((LdInfo *) 0)->l32.ldinfo_filename; 725 726 if (bfd_seek (core_bfd, c_loader + size, SEEK_SET) != 0) 727 return FALSE; 728 729 alloc = 100; 730 path = bfd_malloc ((bfd_size_type) alloc); 731 if (path == NULL) 732 return FALSE; 733 s = path; 734 735 while (1) 736 { 737 if (bfd_bread (s, (bfd_size_type) 1, core_bfd) != 1) 738 { 739 free (path); 740 return FALSE; 741 } 742 if (*s == '\0') 743 break; 744 ++s; 745 if (s == path + alloc) 746 { 747 char *n; 748 749 alloc *= 2; 750 n = bfd_realloc (path, (bfd_size_type) alloc); 751 if (n == NULL) 752 { 753 free (path); 754 return FALSE; 755 } 756 s = n + (path - s); 757 path = n; 758 } 759 } 760 761 str1 = strrchr (path, '/'); 762 str2 = strrchr (bfd_get_filename (exec_bfd), '/'); 763 764 /* step over character '/' */ 765 str1 = str1 != NULL ? str1 + 1 : path; 766 str2 = str2 != NULL ? str2 + 1 : bfd_get_filename (exec_bfd); 767 768 if (strcmp (str1, str2) == 0) 769 ret = TRUE; 770 else 771 ret = FALSE; 772 773 free (path); 774 775 return ret; 776} 777 778char * 779rs6000coff_core_file_failing_command (bfd *abfd) 780{ 781 CoreHdr *core = core_hdr (abfd); 782#ifndef BFD64 783 char *com = CORE_NEW (*core) ? 784 CNEW_COMM (core->new_dump) : COLD_COMM (core->old); 785#else 786 char *com = CNEW_COMM (core->new_dump); 787#endif 788 789 if (*com) 790 return com; 791 else 792 return 0; 793} 794 795int 796rs6000coff_core_file_failing_signal (bfd *abfd) 797{ 798 CoreHdr *core = core_hdr (abfd); 799#ifndef BFD64 800 return CORE_NEW (*core) ? core->new_dump.c_signo : core->old.c_signo; 801#else 802 return core->new_dump.c_signo; 803#endif 804} 805 806#endif /* AIX_CORE */ 807