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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [bfd/] [aix5ppc-core.c] - Rev 280
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/* 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 */
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