binutils-gdb/bfd/aix5ppc-core.c

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/* IBM RS/6000 "XCOFF" back-end for BFD.
Copyright 2001, 2002
Free Software Foundation, Inc.
Written by Tom Rix
Contributed by Redhat.
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., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */
#include "bfd.h"
#ifdef AIX_5_CORE
#include "sysdep.h"
#include "libbfd.h"
const bfd_target * xcoff64_core_p PARAMS ((bfd *));
boolean xcoff64_core_file_matches_executable_p PARAMS ((bfd *, bfd *));
char * xcoff64_core_file_failing_command PARAMS ((bfd *));
int xcoff64_core_file_failing_signal PARAMS ((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 (abfd)
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;
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_read (&core, sizeof (struct core_dumpxx), 1, 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 trucated 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 = (struct core_dumpxx *)
bfd_zalloc (abfd, sizeof (struct core_dumpxx));
if (NULL == new_core_hdr)
return return_value;
memcpy (new_core_hdr, &core, sizeof (struct core_dumpxx));
core_hdr(abfd) = (char *)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->_raw_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->_raw_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->_raw_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->_raw_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_read (&ldinfo, sizeof (struct __ld_info64), 1, 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->_raw_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_read (&vminfo, sizeof (struct vm_infox), 1, 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->_raw_size = vminfo.vminfo_size;
sec->vma = vminfo.vminfo_addr;
sec->filepos = vminfo.vminfo_offset;
}
}
return_value = 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. */
boolean
xcoff64_core_file_matches_executable_p (core_bfd, exec_bfd)
bfd *core_bfd;
bfd *exec_bfd;
{
struct core_dumpxx core;
char *path, *s;
size_t alloc;
const char *str1, *str2;
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_read (&core, sizeof (struct core_dumpxx), 1, 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_read (s, 1, 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 (abfd)
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 (abfd)
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 PARAMS ((bfd *));
boolean xcoff64_core_file_matches_executable_p PARAMS ((bfd *, bfd *));
char * xcoff64_core_file_failing_command PARAMS ((bfd *));
int xcoff64_core_file_failing_signal PARAMS ((bfd *));
const bfd_target *
xcoff64_core_p (abfd)
bfd *abfd;
{
bfd_set_error (bfd_error_wrong_format);
return 0;
}
boolean
xcoff64_core_file_matches_executable_p (core_bfd, exec_bfd)
bfd *core_bfd;
bfd *exec_bfd;
{
return false;
}
char *
xcoff64_core_file_failing_command (abfd)
bfd *abfd;
{
return 0;
}
int
xcoff64_core_file_failing_signal (abfd)
bfd *abfd;
{
return 0;
}
#endif /* AIX_5_CORE */