diff options
Diffstat (limited to 'binutils-2.17/bfd/rs6000-core.c')
| -rw-r--r-- | binutils-2.17/bfd/rs6000-core.c | 737 |
1 files changed, 0 insertions, 737 deletions
diff --git a/binutils-2.17/bfd/rs6000-core.c b/binutils-2.17/bfd/rs6000-core.c deleted file mode 100644 index 280a020a..00000000 --- a/binutils-2.17/bfd/rs6000-core.c +++ /dev/null @@ -1,737 +0,0 @@ -/* IBM RS/6000 "XCOFF" back-end for BFD. - Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, - 2001, 2002, 2004 - Free Software Foundation, Inc. - FIXME: Can someone provide a transliteration of this name into ASCII? - Using the following chars caused a compiler warning on HIUX (so I replaced - them with octal escapes), and isn't useful without an understanding of what - character set it is. - Written by Metin G. Ozisik, Mimi Ph\373\364ng-Th\345o V\365, - and John Gilmore. - Archive support from Damon A. Permezel. - Contributed by IBM Corporation and Cygnus Support. - - This file is part of BFD, the Binary File Descriptor library. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ - -/* This port currently only handles reading object files, except when - compiled on an RS/6000 host. -- no archive support, no core files. - In all cases, it does not support writing. - - This is in a separate file from coff-rs6000.c, because it includes - system include files that conflict with coff/rs6000.h. */ - -/* Internalcoff.h and coffcode.h modify themselves based on this flag. */ -#define RS6000COFF_C 1 - -/* The AIX 4.1 kernel is obviously compiled with -D_LONG_LONG, so - we have to define _LONG_LONG for older versions of gcc to get the - proper alignments in the user structure. */ -#if defined(_AIX41) && !defined(_LONG_LONG) -#define _LONG_LONG -#endif - -#include "bfd.h" -#include "sysdep.h" -#include "libbfd.h" - -#ifdef AIX_CORE - -/* AOUTHDR is defined by the above. We need another defn of it, from the - system include files. Punt the old one and get us a new name for the - typedef in the system include files. */ -#ifdef AOUTHDR -#undef AOUTHDR -#endif -#define AOUTHDR second_AOUTHDR - -#undef SCNHDR - -/* ------------------------------------------------------------------------ */ -/* Support for core file stuff.. */ -/* ------------------------------------------------------------------------ */ - -#include <sys/user.h> -#define __LDINFO_PTRACE32__ /* for __ld_info32 */ -#define __LDINFO_PTRACE64__ /* for __ld_info64 */ -#include <sys/ldr.h> -#include <sys/core.h> -#include <sys/systemcfg.h> - -/* Borrowed from <sys/inttypes.h> on recent AIX versions. */ -typedef unsigned long ptr_to_uint; - -#define core_hdr(bfd) ((CoreHdr *) bfd->tdata.any) - -/* AIX 4.1 changed the names and locations of a few items in the core file. - AIX 4.3 defined an entirely new structure, core_dumpx, but kept support for - the previous 4.1 structure, core_dump. - - AIX_CORE_DUMPX_CORE is defined (by configure) on AIX 4.3+, and - CORE_VERSION_1 is defined (by AIX core.h) as 2 on AIX 4.3+ and as 1 on AIX - 4.1 and 4.2. AIX pre-4.1 (aka 3.x) either doesn't define CORE_VERSION_1 - or else defines it as 0. */ - -#if defined(CORE_VERSION_1) && !CORE_VERSION_1 -# undef CORE_VERSION_1 -#endif - -/* The following union and macros allow this module to compile on all AIX - versions and to handle both core_dumpx and core_dump on 4.3+. CNEW_*() - and COLD_*() macros respectively retrieve core_dumpx and core_dump - values. */ - -/* Union of 32-bit and 64-bit versions of ld_info. */ - -typedef union { -#ifdef __ld_info32 - struct __ld_info32 l32; - struct __ld_info64 l64; -#else - struct ld_info l32; - struct ld_info l64; -#endif -} LdInfo; - -/* Union of old and new core dump structures. */ - -typedef union { -#ifdef AIX_CORE_DUMPX_CORE - struct core_dumpx new; /* new AIX 4.3+ core dump */ -#else - struct core_dump new; /* for simpler coding */ -#endif - struct core_dump old; /* old AIX 4.2- core dump, still used on - 4.3+ with appropriate SMIT config */ -} CoreHdr; - -/* Union of old and new vm_info structures. */ - -#ifdef CORE_VERSION_1 -typedef union { -#ifdef AIX_CORE_DUMPX_CORE - struct vm_infox new; -#else - struct vm_info new; -#endif - struct vm_info old; -} VmInfo; -#endif - -/* Return whether CoreHdr C is in new or old format. */ - -#ifdef AIX_CORE_DUMPX_CORE -# define CORE_NEW(c) (!(c).old.c_entries) -#else -# define CORE_NEW(c) 0 -#endif - -/* Return the c_stackorg field from struct core_dumpx C. */ - -#ifdef AIX_CORE_DUMPX_CORE -# define CNEW_STACKORG(c) (c).c_stackorg -#else -# define CNEW_STACKORG(c) 0 -#endif - -/* Return the offset to the loader region from struct core_dump C. */ - -#ifdef AIX_CORE_DUMPX_CORE -# define CNEW_LOADER(c) (c).c_loader -#else -# define CNEW_LOADER(c) 0 -#endif - -/* Return the offset to the loader region from struct core_dump C. */ - -#define COLD_LOADER(c) (c).c_tab - -/* Return the c_lsize field from struct core_dumpx C. */ - -#ifdef AIX_CORE_DUMPX_CORE -# define CNEW_LSIZE(c) (c).c_lsize -#else -# define CNEW_LSIZE(c) 0 -#endif - -/* Return the c_dataorg field from struct core_dumpx C. */ - -#ifdef AIX_CORE_DUMPX_CORE -# define CNEW_DATAORG(c) (c).c_dataorg -#else -# define CNEW_DATAORG(c) 0 -#endif - -/* Return the c_datasize field from struct core_dumpx C. */ - -#ifdef AIX_CORE_DUMPX_CORE -# define CNEW_DATASIZE(c) (c).c_datasize -#else -# define CNEW_DATASIZE(c) 0 -#endif - -/* Return the c_impl field from struct core_dumpx C. */ - -#if defined (HAVE_ST_C_IMPL) || defined (AIX_5_CORE) -# define CNEW_IMPL(c) (c).c_impl -#else -# define CNEW_IMPL(c) 0 -#endif - -/* Return the command string from struct core_dumpx C. */ - -#ifdef AIX_CORE_DUMPX_CORE -# define CNEW_COMM(c) (c).c_u.U_proc.pi_comm -#else -# define CNEW_COMM(c) 0 -#endif - -/* Return the command string from struct core_dump C. */ - -#ifdef CORE_VERSION_1 -# define COLD_COMM(c) (c).c_u.U_comm -#else -# define COLD_COMM(c) (c).c_u.u_comm -#endif - -/* Return the struct __context64 pointer from struct core_dumpx C. */ - -#ifdef AIX_CORE_DUMPX_CORE -# define CNEW_CONTEXT64(c) (c).c_flt.hctx.r64 -#else -# define CNEW_CONTEXT64(c) c -#endif - -/* Return the struct mstsave pointer from struct core_dumpx C. */ - -#ifdef AIX_CORE_DUMPX_CORE -# define CNEW_MSTSAVE(c) (c).c_flt.hctx.r32 -#else -# define CNEW_MSTSAVE(c) c -#endif - -/* Return the struct mstsave pointer from struct core_dump C. */ - -#ifdef CORE_VERSION_1 -# define COLD_MSTSAVE(c) (c).c_mst -#else -# define COLD_MSTSAVE(c) (c).c_u.u_save -#endif - -/* Return whether struct core_dumpx is from a 64-bit process. */ - -#ifdef AIX_CORE_DUMPX_CORE -# define CNEW_PROC64(c) IS_PROC64(&(c).c_u.U_proc) -#else -# define CNEW_PROC64(c) 0 -#endif - -/* Magic end-of-stack addresses for old core dumps. This is _very_ fragile, - but I don't see any easy way to get that info right now. */ - -#ifdef CORE_VERSION_1 -# define COLD_STACKEND 0x2ff23000 -#else -# define COLD_STACKEND 0x2ff80000 -#endif - -/* Size of the leading portion that old and new core dump structures have in - common. */ -#define CORE_COMMONSZ ((int) &((struct core_dump *) 0)->c_entries \ - + sizeof (((struct core_dump *) 0)->c_entries)) - -/* Define prototypes for certain functions, to avoid a compiler warning - saying that they are missing. */ - -const bfd_target * rs6000coff_core_p (bfd *abfd); -bfd_boolean rs6000coff_core_file_matches_executable_p (bfd *core_bfd, - bfd *exec_bfd); -char * rs6000coff_core_file_failing_command (bfd *abfd); -int rs6000coff_core_file_failing_signal (bfd *abfd); - -/* Try to read into CORE the header from the core file associated with ABFD. - Return success. */ - -static bfd_boolean -read_hdr (bfd *abfd, CoreHdr *core) -{ - bfd_size_type size; - - if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) - return FALSE; - - /* Read the leading portion that old and new core dump structures have in - common. */ - size = CORE_COMMONSZ; - if (bfd_bread (core, size, abfd) != size) - return FALSE; - - /* Read the trailing portion of the structure. */ - if (CORE_NEW (*core)) - size = sizeof (core->new); - else - size = sizeof (core->old); - size -= CORE_COMMONSZ; - return bfd_bread ((char *) core + CORE_COMMONSZ, size, abfd) == size; -} - -static asection * -make_bfd_asection (bfd *abfd, const char *name, flagword flags, - bfd_size_type size, bfd_vma vma, file_ptr filepos) -{ - asection *asect; - - asect = bfd_make_section_anyway (abfd, name); - if (!asect) - return NULL; - - asect->flags = flags; - asect->size = size; - asect->vma = vma; - asect->filepos = filepos; - asect->alignment_power = 8; - - return asect; -} - -/* Decide if a given bfd represents a `core' file or not. There really is no - magic number or anything like, in rs6000coff. */ - -const bfd_target * -rs6000coff_core_p (bfd *abfd) -{ - CoreHdr core; - struct stat statbuf; - bfd_size_type size; - char *tmpptr; - - /* Values from new and old core structures. */ - int c_flag; - file_ptr c_stack, c_regoff, c_loader; - bfd_size_type c_size, c_regsize, c_lsize; - bfd_vma c_stackend; - void *c_regptr; - int proc64; - - if (!read_hdr (abfd, &core)) - { - if (bfd_get_error () != bfd_error_system_call) - bfd_set_error (bfd_error_wrong_format); - return NULL; - } - - /* Copy fields from new or old core structure. */ - if (CORE_NEW (core)) - { - c_flag = core.new.c_flag; - c_stack = (file_ptr) core.new.c_stack; - c_size = core.new.c_size; - c_stackend = CNEW_STACKORG (core.new) + c_size; - c_lsize = CNEW_LSIZE (core.new); - c_loader = CNEW_LOADER (core.new); - proc64 = CNEW_PROC64 (core.new); - } - else - { - c_flag = core.old.c_flag; - c_stack = (file_ptr) (ptr_to_uint) core.old.c_stack; - c_size = core.old.c_size; - c_stackend = COLD_STACKEND; - c_lsize = 0x7ffffff; - c_loader = (file_ptr) (ptr_to_uint) COLD_LOADER (core.old); - proc64 = 0; - } - - if (proc64) - { - c_regsize = sizeof (CNEW_CONTEXT64 (core.new)); - c_regptr = &CNEW_CONTEXT64 (core.new); - } - else if (CORE_NEW (core)) - { - c_regsize = sizeof (CNEW_MSTSAVE (core.new)); - c_regptr = &CNEW_MSTSAVE (core.new); - } - else - { - c_regsize = sizeof (COLD_MSTSAVE (core.old)); - c_regptr = &COLD_MSTSAVE (core.old); - } - c_regoff = (char *) c_regptr - (char *) &core; - - if (bfd_stat (abfd, &statbuf) < 0) - { - bfd_set_error (bfd_error_system_call); - return NULL; - } - - /* If the core file ulimit is too small, the system will first - omit the data segment, then omit the stack, then decline to - dump core altogether (as far as I know UBLOCK_VALID and LE_VALID - are always set) (this is based on experimentation on AIX 3.2). - Now, the thing is that GDB users will be surprised - if segments just silently don't appear (well, maybe they would - think to check "info files", I don't know). - - For the data segment, we have no choice but to keep going if it's - not there, since the default behavior is not to dump it (regardless - of the ulimit, it's based on SA_FULLDUMP). But for the stack segment, - if it's not there, we refuse to have anything to do with this core - file. The usefulness of a core dump without a stack segment is pretty - limited anyway. */ - - if (!(c_flag & UBLOCK_VALID) - || !(c_flag & LE_VALID)) - { - bfd_set_error (bfd_error_wrong_format); - return NULL; - } - - if (!(c_flag & USTACK_VALID)) - { - bfd_set_error (bfd_error_file_truncated); - return NULL; - } - - /* Don't check the core file size for a full core, AIX 4.1 includes - additional shared library sections in a full core. */ - if (!(c_flag & (FULL_CORE | CORE_TRUNC))) - { - /* If the size is wrong, it means we're misinterpreting something. */ - if (c_stack + (file_ptr) c_size != statbuf.st_size) - { - bfd_set_error (bfd_error_wrong_format); - return NULL; - } - } - - /* Sanity check on the c_tab field. */ - if (!CORE_NEW (core) && (c_loader < (file_ptr) sizeof core.old || - c_loader >= statbuf.st_size || - c_loader >= c_stack)) - { - bfd_set_error (bfd_error_wrong_format); - return NULL; - } - - /* Issue warning if the core file was truncated during writing. */ - if (c_flag & CORE_TRUNC) - (*_bfd_error_handler) (_("%s: warning core file truncated"), - bfd_get_filename (abfd)); - - /* Allocate core file header. */ - size = CORE_NEW (core) ? sizeof (core.new) : sizeof (core.old); - tmpptr = (char *) bfd_zalloc (abfd, (bfd_size_type) size); - if (!tmpptr) - return NULL; - - /* Copy core file header. */ - memcpy (tmpptr, &core, size); - set_tdata (abfd, tmpptr); - - /* Set architecture. */ - if (CORE_NEW (core)) - { - enum bfd_architecture arch; - unsigned long mach; - - switch (CNEW_IMPL (core.new)) - { - case POWER_RS1: - case POWER_RSC: - case POWER_RS2: - arch = bfd_arch_rs6000; - mach = bfd_mach_rs6k; - break; - default: - arch = bfd_arch_powerpc; - mach = bfd_mach_ppc; - break; - } - bfd_default_set_arch_mach (abfd, arch, mach); - } - - /* .stack section. */ - if (!make_bfd_asection (abfd, ".stack", - SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, - c_size, c_stackend - c_size, c_stack)) - goto fail; - - /* .reg section for all registers. */ - if (!make_bfd_asection (abfd, ".reg", - SEC_HAS_CONTENTS, - c_regsize, (bfd_vma) 0, c_regoff)) - goto fail; - - /* .ldinfo section. - To actually find out how long this section is in this particular - core dump would require going down the whole list of struct ld_info's. - See if we can just fake it. */ - if (!make_bfd_asection (abfd, ".ldinfo", - SEC_HAS_CONTENTS, - c_lsize, (bfd_vma) 0, c_loader)) - goto fail; - -#ifndef CORE_VERSION_1 - /* .data section if present. - AIX 3 dumps the complete data section and sets FULL_CORE if the - ulimit is large enough, otherwise the data section is omitted. - AIX 4 sets FULL_CORE even if the core file is truncated, we have - to examine core.c_datasize below to find out the actual size of - the .data section. */ - if (c_flag & FULL_CORE) - { - if (!make_bfd_asection (abfd, ".data", - SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, - (bfd_size_type) core.old.c_u.u_dsize, - (bfd_vma) - CDATA_ADDR (core.old.c_u.u_dsize), - c_stack + c_size)) - goto fail; - } -#endif - -#ifdef CORE_VERSION_1 - /* AIX 4 adds data sections from loaded objects to the core file, - which can be found by examining ldinfo, and anonymously mmapped - regions. */ - { - LdInfo ldinfo; - bfd_size_type ldi_datasize; - file_ptr ldi_core; - uint ldi_next; - bfd_vma ldi_dataorg; - - /* Fields from new and old core structures. */ - bfd_size_type c_datasize, c_vmregions; - file_ptr c_data, c_vmm; - - if (CORE_NEW (core)) - { - c_datasize = CNEW_DATASIZE (core.new); - c_data = (file_ptr) core.new.c_data; - c_vmregions = core.new.c_vmregions; - c_vmm = (file_ptr) core.new.c_vmm; - } - else - { - c_datasize = core.old.c_datasize; - c_data = (file_ptr) (ptr_to_uint) core.old.c_data; - c_vmregions = core.old.c_vmregions; - c_vmm = (file_ptr) (ptr_to_uint) core.old.c_vmm; - } - - /* .data section from executable. */ - if (c_datasize) - { - if (!make_bfd_asection (abfd, ".data", - SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, - c_datasize, - (bfd_vma) CDATA_ADDR (c_datasize), - c_data)) - goto fail; - } - - /* .data sections from loaded objects. */ - if (proc64) - size = (int) ((LdInfo *) 0)->l64.ldinfo_filename; - else - size = (int) ((LdInfo *) 0)->l32.ldinfo_filename; - - while (1) - { - if (bfd_seek (abfd, c_loader, SEEK_SET) != 0) - goto fail; - if (bfd_bread (&ldinfo, size, abfd) != size) - goto fail; - - if (proc64) - { - ldi_core = ldinfo.l64.ldinfo_core; - ldi_datasize = ldinfo.l64.ldinfo_datasize; - ldi_dataorg = (bfd_vma) ldinfo.l64.ldinfo_dataorg; - ldi_next = ldinfo.l64.ldinfo_next; - } - else - { - ldi_core = ldinfo.l32.ldinfo_core; - ldi_datasize = ldinfo.l32.ldinfo_datasize; - ldi_dataorg = (bfd_vma) (long) ldinfo.l32.ldinfo_dataorg; - ldi_next = ldinfo.l32.ldinfo_next; - } - - if (ldi_core) - if (!make_bfd_asection (abfd, ".data", - SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, - ldi_datasize, ldi_dataorg, ldi_core)) - goto fail; - - if (ldi_next == 0) - break; - c_loader += ldi_next; - } - - /* .vmdata sections from anonymously mmapped regions. */ - if (c_vmregions) - { - bfd_size_type i; - - if (bfd_seek (abfd, c_vmm, SEEK_SET) != 0) - goto fail; - - for (i = 0; i < c_vmregions; i++) - { - VmInfo vminfo; - bfd_size_type vminfo_size; - file_ptr vminfo_offset; - bfd_vma vminfo_addr; - - size = CORE_NEW (core) ? sizeof (vminfo.new) : sizeof (vminfo.old); - if (bfd_bread (&vminfo, size, abfd) != size) - goto fail; - - if (CORE_NEW (core)) - { - vminfo_addr = (bfd_vma) vminfo.new.vminfo_addr; - vminfo_size = vminfo.new.vminfo_size; - vminfo_offset = vminfo.new.vminfo_offset; - } - else - { - vminfo_addr = (bfd_vma) (long) vminfo.old.vminfo_addr; - vminfo_size = vminfo.old.vminfo_size; - vminfo_offset = vminfo.old.vminfo_offset; - } - - if (vminfo_offset) - if (!make_bfd_asection (abfd, ".vmdata", - SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, - vminfo_size, vminfo_addr, - vminfo_offset)) - goto fail; - } - } - } -#endif - - return abfd->xvec; /* This is garbage for now. */ - - fail: - bfd_release (abfd, abfd->tdata.any); - abfd->tdata.any = NULL; - bfd_section_list_clear (abfd); - return NULL; -} - -/* Return `TRUE' if given core is from the given executable. */ - -bfd_boolean -rs6000coff_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd) -{ - CoreHdr core; - bfd_size_type size; - char *path, *s; - size_t alloc; - const char *str1, *str2; - bfd_boolean ret; - file_ptr c_loader; - - if (!read_hdr (core_bfd, &core)) - return FALSE; - - if (CORE_NEW (core)) - c_loader = CNEW_LOADER (core.new); - else - c_loader = (file_ptr) (ptr_to_uint) COLD_LOADER (core.old); - - if (CORE_NEW (core) && CNEW_PROC64 (core.new)) - size = (int) ((LdInfo *) 0)->l64.ldinfo_filename; - else - size = (int) ((LdInfo *) 0)->l32.ldinfo_filename; - - if (bfd_seek (core_bfd, c_loader + size, SEEK_SET) != 0) - return FALSE; - - alloc = 100; - path = bfd_malloc ((bfd_size_type) alloc); - if (path == NULL) - return FALSE; - s = path; - - while (1) - { - if (bfd_bread (s, (bfd_size_type) 1, core_bfd) != 1) - { - free (path); - return FALSE; - } - if (*s == '\0') - break; - ++s; - if (s == path + alloc) - { - char *n; - - alloc *= 2; - n = bfd_realloc (path, (bfd_size_type) alloc); - if (n == NULL) - { - free (path); - return FALSE; - } - s = n + (path - s); - path = n; - } - } - - str1 = strrchr (path, '/'); - str2 = strrchr (exec_bfd->filename, '/'); - - /* step over character '/' */ - str1 = str1 != NULL ? str1 + 1 : path; - str2 = str2 != NULL ? str2 + 1 : exec_bfd->filename; - - if (strcmp (str1, str2) == 0) - ret = TRUE; - else - ret = FALSE; - - free (path); - - return ret; -} - -char * -rs6000coff_core_file_failing_command (bfd *abfd) -{ - CoreHdr *core = core_hdr (abfd); - char *com = CORE_NEW (*core) ? - CNEW_COMM (core->new) : COLD_COMM (core->old); - - if (*com) - return com; - else - return 0; -} - -int -rs6000coff_core_file_failing_signal (bfd *abfd) -{ - CoreHdr *core = core_hdr (abfd); - return CORE_NEW (*core) ? core->new.c_signo : core->old.c_signo; -} - -#endif /* AIX_CORE */ |