353 lines
9.2 KiB
C
353 lines
9.2 KiB
C
/* IBM RS/6000 "XCOFF" back-end for BFD.
|
|
Copyright 2001, 2002, 2003, 2004, 2005
|
|
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 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. */
|
|
|
|
#include "bfd.h"
|
|
|
|
#ifdef AIX_5_CORE
|
|
|
|
#include "sysdep.h"
|
|
#include "libbfd.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 *);
|
|
|
|
/* 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>
|
|
|
|
#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)
|
|
{
|
|
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;
|
|
|
|
/* 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. */
|
|
sec = bfd_make_section_anyway (abfd, ".stack");
|
|
if (NULL == sec)
|
|
return return_value;
|
|
|
|
sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
|
|
sec->size = core.c_size;
|
|
sec->vma = core.c_stackorg;
|
|
sec->filepos = core.c_stack;
|
|
|
|
/* .reg section for all registers. */
|
|
sec = bfd_make_section_anyway (abfd, ".reg");
|
|
if (NULL == sec)
|
|
return return_value;
|
|
|
|
sec->flags = SEC_HAS_CONTENTS | SEC_IN_MEMORY;
|
|
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. */
|
|
sec = bfd_make_section_anyway (abfd, ".ldinfo");
|
|
if (NULL == sec)
|
|
return return_value;
|
|
|
|
sec->flags = SEC_HAS_CONTENTS;
|
|
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. */
|
|
sec = bfd_make_section_anyway (abfd, ".data");
|
|
if (NULL == sec)
|
|
return return_value;
|
|
|
|
sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
|
|
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)
|
|
{
|
|
sec = bfd_make_section_anyway (abfd, ".data");
|
|
if (NULL == sec)
|
|
return return_value;
|
|
|
|
sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
|
|
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)
|
|
{
|
|
sec = bfd_make_section_anyway (abfd, ".vmdata");
|
|
if (NULL == sec)
|
|
return return_value;
|
|
|
|
sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
|
|
sec->size = vminfo.vminfo_size;
|
|
sec->vma = vminfo.vminfo_addr;
|
|
sec->filepos = vminfo.vminfo_offset;
|
|
}
|
|
}
|
|
|
|
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 *);
|
|
bfd_boolean xcoff64_core_file_matches_executable_p (bfd *, bfd *);
|
|
char *xcoff64_core_file_failing_command (bfd *);
|
|
int xcoff64_core_file_failing_signal (bfd *);
|
|
|
|
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 ATTRIBUTE_UNUSED,
|
|
bfd *exec_bfd ATTRIBUTE_UNUSED)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
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 */
|