diff options
Diffstat (limited to 'binutils-2.25/bfd/aix5ppc-core.c')
| -rw-r--r-- | binutils-2.25/bfd/aix5ppc-core.c | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/aix5ppc-core.c b/binutils-2.25/bfd/aix5ppc-core.c new file mode 100644 index 00000000..7b0695aa --- /dev/null +++ b/binutils-2.25/bfd/aix5ppc-core.c @@ -0,0 +1,358 @@ +/* IBM RS/6000 "XCOFF" back-end for BFD. + Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 + Free Software Foundation, Inc. + Written by Tom Rix + Contributed by Red Hat Inc. + + 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 3 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. */ + +#include "sysdep.h" +#include "bfd.h" + +const bfd_target *xcoff64_core_p (bfd *); +bfd_boolean xcoff64_core_file_matches_executable_p (bfd *, bfd *); +char *xcoff64_core_file_failing_command (bfd *); +int xcoff64_core_file_failing_signal (bfd *); + +#ifdef AIX_5_CORE + +#include "libbfd.h" + +/* Aix 5.1 system include file. */ + +/* Need to define this macro so struct ld_info64 get included. */ +#define __LDINFO_PTRACE64__ +#include <sys/ldr.h> +#include <core.h> + +/* The default architecture and machine for matching core files. */ +#define DEFAULT_ARCHITECTURE bfd_arch_powerpc +#define DEFAULT_MACHINE bfd_mach_ppc_620 + +#define core_hdr(abfd) ((struct core_dumpxx *) abfd->tdata.any) + +#define CHECK_FILE_OFFSET(s, v) \ + ((bfd_signed_vma)(v) < 0 || (bfd_signed_vma)(v) > (bfd_signed_vma)(s).st_size) + +const bfd_target * +xcoff64_core_p (bfd *abfd) +{ + enum bfd_architecture arch; + unsigned long mach; + struct core_dumpxx core, *new_core_hdr; + struct stat statbuf; + asection *sec; + struct __ld_info64 ldinfo; + bfd_vma ld_offset; + bfd_size_type i; + struct vm_infox vminfo; + const bfd_target *return_value = NULL; + flagword flags; + + /* Get the header. */ + if (bfd_seek (abfd, 0, SEEK_SET) != 0) + goto xcoff64_core_p_error; + + if (sizeof (struct core_dumpxx) + != bfd_bread (&core, sizeof (struct core_dumpxx), abfd)) + goto xcoff64_core_p_error; + + if (bfd_stat (abfd, &statbuf) < 0) + goto xcoff64_core_p_error; + + /* Sanity checks + c_flag has CORE_VERSION_1, Aix 4+ + c_entries = 0 for Aix 4.3+ + IS_PROC64 is a macro defined in procinfo.h, test for 64 bit process. + + We will still be confused if a Aix 4.3 64 bit core file is + copied over to a Aix 5 machine. + + Check file header offsets + + See rs6000-core.c for comment on size of core + If there isn't enough of a real core file, bail. */ + + if ((CORE_VERSION_1 != (core.c_flag & CORE_VERSION_1)) + || (0 != core.c_entries) + || (! (IS_PROC64 (&core.c_u.U_proc))) + || ((CHECK_FILE_OFFSET (statbuf, core.c_fdsinfox))) + || ((CHECK_FILE_OFFSET (statbuf, core.c_loader))) + || ((CHECK_FILE_OFFSET (statbuf, core.c_loader + core.c_lsize))) + || ((CHECK_FILE_OFFSET (statbuf, core.c_thr))) + || ((CHECK_FILE_OFFSET (statbuf, core.c_segregion))) + || ((CHECK_FILE_OFFSET (statbuf, core.c_stack))) + || ((CHECK_FILE_OFFSET (statbuf, core.c_stack + core.c_size))) + || ((CHECK_FILE_OFFSET (statbuf, core.c_data))) + || ((CHECK_FILE_OFFSET (statbuf, core.c_data + core.c_datasize))) + || (! (core.c_flag & UBLOCK_VALID)) + || (! (core.c_flag & LE_VALID))) + goto xcoff64_core_p_error; + + /* Check for truncated stack or general truncating. */ + if ((! (core.c_flag & USTACK_VALID)) + || (core.c_flag & CORE_TRUNC)) + { + bfd_set_error (bfd_error_file_truncated); + + return return_value; + } + + new_core_hdr = bfd_zalloc (abfd, sizeof (struct core_dumpxx)); + if (NULL == new_core_hdr) + return return_value; + + memcpy (new_core_hdr, &core, sizeof (struct core_dumpxx)); + /* The core_hdr() macro is no longer used here because it would + expand to code relying on gcc's cast-as-lvalue extension, + which was removed in gcc 4.0. */ + abfd->tdata.any = new_core_hdr; + + /* .stack section. */ + flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; + sec = bfd_make_section_anyway_with_flags (abfd, ".stack", flags); + if (NULL == sec) + return return_value; + + sec->size = core.c_size; + sec->vma = core.c_stackorg; + sec->filepos = core.c_stack; + + /* .reg section for all registers. */ + flags = SEC_HAS_CONTENTS | SEC_IN_MEMORY; + sec = bfd_make_section_anyway_with_flags (abfd, ".reg", flags); + if (NULL == sec) + return return_value; + + sec->size = sizeof (struct __context64); + sec->vma = 0; + sec->filepos = 0; + sec->contents = (bfd_byte *)&new_core_hdr->c_flt.r64; + + /* .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. */ + flags = SEC_HAS_CONTENTS; + sec = bfd_make_section_anyway_with_flags (abfd, ".ldinfo", flags); + if (NULL == sec) + return return_value; + + sec->size = core.c_lsize; + sec->vma = 0; + sec->filepos = core.c_loader; + + /* AIX 4 adds data sections from loaded objects to the core file, + which can be found by examining ldinfo, and anonymously mmapped + regions. */ + + /* .data section from executable. */ + flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; + sec = bfd_make_section_anyway_with_flags (abfd, ".data", flags); + if (NULL == sec) + return return_value; + + sec->size = core.c_datasize; + sec->vma = core.c_dataorg; + sec->filepos = core.c_data; + + /* .data sections from loaded objects. */ + ld_offset = core.c_loader; + + while (1) + { + if (bfd_seek (abfd, ld_offset, SEEK_SET) != 0) + return return_value; + + if (sizeof (struct __ld_info64) != + bfd_bread (&ldinfo, sizeof (struct __ld_info64), abfd)) + return return_value; + + if (ldinfo.ldinfo_core) + { + flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; + sec = bfd_make_section_anyway_with_flags (abfd, ".data", flags); + if (NULL == sec) + return return_value; + + sec->size = ldinfo.ldinfo_datasize; + sec->vma = ldinfo.ldinfo_dataorg; + sec->filepos = ldinfo.ldinfo_core; + } + + if (0 == ldinfo.ldinfo_next) + break; + ld_offset += ldinfo.ldinfo_next; + } + + /* .vmdata sections from anonymously mmapped regions. */ + if (core.c_vmregions) + { + if (bfd_seek (abfd, core.c_vmm, SEEK_SET) != 0) + return return_value; + + for (i = 0; i < core.c_vmregions; i++) + if (sizeof (struct vm_infox) != + bfd_bread (&vminfo, sizeof (struct vm_infox), abfd)) + return return_value; + + if (vminfo.vminfo_offset) + { + flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; + sec = bfd_make_section_anyway_with_flags (abfd, ".vmdata", flags); + if (NULL == sec) + return return_value; + + sec->size = vminfo.vminfo_size; + sec->vma = vminfo.vminfo_addr; + sec->filepos = vminfo.vminfo_offset; + } + } + + /* Set the architecture and machine. */ + arch = DEFAULT_ARCHITECTURE; + mach = DEFAULT_MACHINE; + bfd_default_set_arch_mach (abfd, arch, mach); + + return_value = (bfd_target *) abfd->xvec; /* This is garbage for now. */ + + xcoff64_core_p_error: + if (bfd_get_error () != bfd_error_system_call) + bfd_set_error (bfd_error_wrong_format); + + return return_value; +} + +/* Return `TRUE' if given core is from the given executable. */ + +bfd_boolean +xcoff64_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd) +{ + struct core_dumpxx core; + char *path, *s; + size_t alloc; + const char *str1, *str2; + bfd_boolean return_value = FALSE; + + /* Get the header. */ + if (bfd_seek (core_bfd, 0, SEEK_SET) != 0) + return return_value; + + if (sizeof (struct core_dumpxx) != + bfd_bread (&core, sizeof (struct core_dumpxx), core_bfd)) + return return_value; + + if (bfd_seek (core_bfd, core.c_loader, SEEK_SET) != 0) + return return_value; + + alloc = 100; + path = bfd_malloc (alloc); + if (path == NULL) + return return_value; + + s = path; + + while (1) + { + if (bfd_bread (s, 1, core_bfd) != 1) + goto xcoff64_core_file_matches_executable_p_end_1; + + if (*s == '\0') + break; + ++s; + if (s == path + alloc) + { + char *n; + + alloc *= 2; + n = bfd_realloc (path, alloc); + if (n == NULL) + goto xcoff64_core_file_matches_executable_p_end_1; + + 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) + return_value = TRUE; + + xcoff64_core_file_matches_executable_p_end_1: + free (path); + return return_value; +} + +char * +xcoff64_core_file_failing_command (bfd *abfd) +{ + struct core_dumpxx *c = core_hdr (abfd); + char *return_value = 0; + + if (NULL != c) + return_value = c->c_u.U_proc.pi_comm; + + return return_value; +} + +int +xcoff64_core_file_failing_signal (bfd *abfd) +{ + struct core_dumpxx *c = core_hdr (abfd); + int return_value = 0; + + if (NULL != c) + return_value = c->c_signo; + + return return_value; +} + +#else /* AIX_5_CORE */ + +const bfd_target * +xcoff64_core_p (bfd *abfd ATTRIBUTE_UNUSED) +{ + bfd_set_error (bfd_error_wrong_format); + return 0; +} + +bfd_boolean +xcoff64_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd) +{ + return generic_core_file_matches_executable_p (core_bfd, exec_bfd); +} + +char * +xcoff64_core_file_failing_command (bfd *abfd ATTRIBUTE_UNUSED) +{ + return 0; +} + +int +xcoff64_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED) +{ + return 0; +} + +#endif /* AIX_5_CORE */ |