binutils-gdb/bfd/netbsd-core.c

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/* BFD back end for NetBSD style core files
Copyright 1988, 1989, 1991, 1992, 1993, 1996, 1998, 1999, 2000, 2001,
2002
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Free Software Foundation, Inc.
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Written by Paul Kranenburg, EUR
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. */
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#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "libaout.h" /* BFD a.out internal data structures */
#include <sys/param.h>
#include <sys/dir.h>
#include <signal.h>
#include <sys/core.h>
/*
* FIXME: On NetBSD/sparc CORE_FPU_OFFSET should be (sizeof (struct trapframe))
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*/
struct netbsd_core_struct {
struct core core;
} *rawptr;
/* forward declarations */
static const bfd_target *netbsd_core_file_p PARAMS ((bfd *abfd));
static char *netbsd_core_file_failing_command PARAMS ((bfd *abfd));
static int netbsd_core_file_failing_signal PARAMS ((bfd *abfd));
static boolean netbsd_core_file_matches_executable_p
PARAMS ((bfd *core_bfd, bfd *exec_bfd));
static void swap_abort PARAMS ((void));
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/* Handle NetBSD-style core dump file. */
/* ARGSUSED */
static const bfd_target *
netbsd_core_file_p (abfd)
bfd *abfd;
{
int i, val;
file_ptr offset;
asection *asect, *asect2;
struct core core;
struct coreseg coreseg;
bfd_size_type amt = sizeof core;
val = bfd_bread ((void *) &core, amt, abfd);
if (val != sizeof core)
{
/* Too small to be a core file */
bfd_set_error (bfd_error_wrong_format);
return 0;
}
if (CORE_GETMAGIC (core) != COREMAGIC)
{
bfd_set_error (bfd_error_wrong_format);
return 0;
}
amt = sizeof (struct netbsd_core_struct);
rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt);
if (rawptr == NULL)
return 0;
rawptr->core = core;
abfd->tdata.netbsd_core_data = rawptr;
offset = core.c_hdrsize;
for (i = 0; i < core.c_nseg; i++)
{
const char *sname;
flagword flags;
if (bfd_seek (abfd, offset, SEEK_SET) != 0)
goto punt;
val = bfd_bread ((void *) &coreseg, (bfd_size_type) sizeof coreseg, abfd);
if (val != sizeof coreseg)
{
bfd_set_error (bfd_error_file_truncated);
goto punt;
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}
if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC)
{
bfd_set_error (bfd_error_wrong_format);
goto punt;
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}
offset += core.c_seghdrsize;
switch (CORE_GETFLAG (coreseg))
{
case CORE_CPU:
sname = ".reg";
flags = SEC_ALLOC + SEC_HAS_CONTENTS;
break;
case CORE_DATA:
sname = ".data";
flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
break;
case CORE_STACK:
sname = ".stack";
flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
break;
default:
sname = ".unknown";
flags = SEC_ALLOC + SEC_HAS_CONTENTS;
break;
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}
asect = bfd_make_section_anyway (abfd, sname);
if (asect == NULL)
goto punt;
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asect->flags = flags;
asect->_raw_size = coreseg.c_size;
asect->vma = coreseg.c_addr;
asect->filepos = offset;
asect->alignment_power = 2;
offset += coreseg.c_size;
#ifdef CORE_FPU_OFFSET
switch (CORE_GETFLAG (coreseg))
{
case CORE_CPU:
/* Hackish... */
asect->_raw_size = CORE_FPU_OFFSET;
asect2 = bfd_make_section_anyway (abfd, ".reg2");
if (asect2 == NULL)
goto punt;
asect2->_raw_size = coreseg.c_size - CORE_FPU_OFFSET;
asect2->vma = 0;
asect2->filepos = asect->filepos + CORE_FPU_OFFSET;
asect2->alignment_power = 2;
asect2->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
break;
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}
#endif
}
/* OK, we believe you. You're a core file (sure, sure). */
return abfd->xvec;
punt:
bfd_release (abfd, abfd->tdata.any);
abfd->tdata.any = NULL;
bfd_section_list_clear (abfd);
return 0;
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}
static char*
netbsd_core_file_failing_command (abfd)
bfd *abfd;
{
/*return core_command (abfd);*/
return abfd->tdata.netbsd_core_data->core.c_name;
}
/* ARGSUSED */
static int
netbsd_core_file_failing_signal (abfd)
bfd *abfd;
{
/*return core_signal (abfd);*/
return abfd->tdata.netbsd_core_data->core.c_signo;
}
/* ARGSUSED */
static boolean
netbsd_core_file_matches_executable_p (core_bfd, exec_bfd)
bfd *core_bfd ATTRIBUTE_UNUSED;
bfd *exec_bfd ATTRIBUTE_UNUSED;
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{
return true; /* FIXME, We have no way of telling at this point */
}
/* If somebody calls any byte-swapping routines, shoot them. */
static void
swap_abort ()
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{
abort (); /* This way doesn't require any declaration for ANSI to fuck up */
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}
#define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort )
#define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
#define NO_SIGNED_GET \
((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort )
const bfd_target netbsd_core_vec =
{
"netbsd-core",
bfd_target_unknown_flavour,
BFD_ENDIAN_UNKNOWN, /* target byte order */
BFD_ENDIAN_UNKNOWN, /* target headers byte order */
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
0, /* symbol prefix */
' ', /* ar_pad_char */
16, /* ar_max_namelen */
NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */
{ /* bfd_check_format */
_bfd_dummy_target, /* unknown format */
_bfd_dummy_target, /* object file */
_bfd_dummy_target, /* archive */
netbsd_core_file_p /* a core file */
},
{ /* bfd_set_format */
bfd_false, bfd_false,
bfd_false, bfd_false
},
{ /* bfd_write_contents */
bfd_false, bfd_false,
bfd_false, bfd_false
},
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BFD_JUMP_TABLE_GENERIC (_bfd_generic),
BFD_JUMP_TABLE_COPY (_bfd_generic),
BFD_JUMP_TABLE_CORE (netbsd),
BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
BFD_JUMP_TABLE_WRITE (_bfd_generic),
BFD_JUMP_TABLE_LINK (_bfd_nolink),
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
NULL,
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(PTR) 0 /* backend_data */
};