1/* IBM RS/6000 "XCOFF" back-end for BFD. 2 Copyright (C) 1990-2017 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) (!(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 280const bfd_target * 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 335const bfd_target * 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 (_("%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 701bfd_boolean 702rs6000coff_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 779char * 780rs6000coff_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 796int 797rs6000coff_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