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283 lines
7.6 KiB
C
283 lines
7.6 KiB
C
/* BFD back end for NetBSD style core files
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Copyright 1988, 1989, 1991, 1992, 1993, 1996, 1998, 1999, 2000, 2001,
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2002, 2003, 2004
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Free Software Foundation, Inc.
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Written by Paul Kranenburg, EUR
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "libaout.h" /* BFD a.out internal data structures */
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#include <sys/param.h>
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#include <sys/dir.h>
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#include <signal.h>
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#include <sys/core.h>
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/*
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* FIXME: On NetBSD/sparc CORE_FPU_OFFSET should be (sizeof (struct trapframe))
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*/
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/* Offset of StackGhost cookie within `struct md_coredump' on
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OpenBSD/sparc. */
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#define CORE_WCOOKIE_OFFSET 344
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struct netbsd_core_struct {
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struct core core;
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} *rawptr;
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/* forward declarations */
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static const bfd_target *netbsd_core_file_p
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PARAMS ((bfd *abfd));
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static char *netbsd_core_file_failing_command
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PARAMS ((bfd *abfd));
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static int netbsd_core_file_failing_signal
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PARAMS ((bfd *abfd));
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static bfd_boolean netbsd_core_file_matches_executable_p
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PARAMS ((bfd *core_bfd, bfd *exec_bfd));
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static void swap_abort
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PARAMS ((void));
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/* Handle NetBSD-style core dump file. */
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static const bfd_target *
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netbsd_core_file_p (abfd)
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bfd *abfd;
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{
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int i, val;
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file_ptr offset;
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asection *asect, *asect2;
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struct core core;
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struct coreseg coreseg;
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bfd_size_type amt = sizeof core;
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val = bfd_bread ((void *) &core, amt, abfd);
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if (val != sizeof core)
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{
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/* Too small to be a core file */
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bfd_set_error (bfd_error_wrong_format);
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return 0;
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}
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if (CORE_GETMAGIC (core) != COREMAGIC)
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{
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bfd_set_error (bfd_error_wrong_format);
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return 0;
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}
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amt = sizeof (struct netbsd_core_struct);
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rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt);
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if (rawptr == NULL)
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return 0;
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rawptr->core = core;
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abfd->tdata.netbsd_core_data = rawptr;
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offset = core.c_hdrsize;
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for (i = 0; i < core.c_nseg; i++)
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{
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const char *sname;
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flagword flags;
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if (bfd_seek (abfd, offset, SEEK_SET) != 0)
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goto punt;
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val = bfd_bread ((void *) &coreseg, (bfd_size_type) sizeof coreseg, abfd);
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if (val != sizeof coreseg)
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{
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bfd_set_error (bfd_error_file_truncated);
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goto punt;
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}
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if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC)
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{
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bfd_set_error (bfd_error_wrong_format);
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goto punt;
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}
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offset += core.c_seghdrsize;
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switch (CORE_GETFLAG (coreseg))
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{
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case CORE_CPU:
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sname = ".reg";
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flags = SEC_ALLOC + SEC_HAS_CONTENTS;
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break;
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case CORE_DATA:
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sname = ".data";
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flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
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break;
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case CORE_STACK:
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sname = ".stack";
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flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
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break;
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default:
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sname = ".unknown";
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flags = SEC_ALLOC + SEC_HAS_CONTENTS;
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break;
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}
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asect = bfd_make_section_anyway (abfd, sname);
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if (asect == NULL)
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goto punt;
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asect->flags = flags;
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asect->_raw_size = coreseg.c_size;
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asect->vma = coreseg.c_addr;
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asect->filepos = offset;
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asect->alignment_power = 2;
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if (CORE_GETMID (core) == M_SPARC_NETBSD
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&& CORE_GETFLAG (coreseg) == CORE_CPU
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&& coreseg.c_size > CORE_WCOOKIE_OFFSET)
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{
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/* Truncate the .reg section. */
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asect->_raw_size = CORE_WCOOKIE_OFFSET;
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/* And create the .wcookie section. */
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asect = bfd_make_section_anyway (abfd, ".wcookie");
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if (asect == NULL)
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goto punt;
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asect->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
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asect->_raw_size = 4;
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asect->vma = 0;
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asect->filepos = offset + CORE_WCOOKIE_OFFSET;
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asect->alignment_power = 2;
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}
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offset += coreseg.c_size;
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#ifdef CORE_FPU_OFFSET
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switch (CORE_GETFLAG (coreseg))
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{
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case CORE_CPU:
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/* Hackish... */
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asect->_raw_size = CORE_FPU_OFFSET;
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asect2 = bfd_make_section_anyway (abfd, ".reg2");
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if (asect2 == NULL)
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goto punt;
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asect2->_raw_size = coreseg.c_size - CORE_FPU_OFFSET;
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asect2->vma = 0;
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asect2->filepos = asect->filepos + CORE_FPU_OFFSET;
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asect2->alignment_power = 2;
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asect2->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
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break;
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}
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#endif
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}
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/* OK, we believe you. You're a core file (sure, sure). */
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return abfd->xvec;
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punt:
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bfd_release (abfd, abfd->tdata.any);
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abfd->tdata.any = NULL;
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bfd_section_list_clear (abfd);
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return 0;
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}
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static char*
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netbsd_core_file_failing_command (abfd)
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bfd *abfd;
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{
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/*return core_command (abfd);*/
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return abfd->tdata.netbsd_core_data->core.c_name;
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}
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static int
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netbsd_core_file_failing_signal (abfd)
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bfd *abfd;
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{
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/*return core_signal (abfd);*/
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return abfd->tdata.netbsd_core_data->core.c_signo;
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}
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static bfd_boolean
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netbsd_core_file_matches_executable_p (core_bfd, exec_bfd)
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bfd *core_bfd ATTRIBUTE_UNUSED;
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bfd *exec_bfd ATTRIBUTE_UNUSED;
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{
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return TRUE; /* FIXME, We have no way of telling at this point */
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}
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/* If somebody calls any byte-swapping routines, shoot them. */
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static void
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swap_abort ()
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{
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abort (); /* This way doesn't require any declaration for ANSI to fuck up */
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}
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#define NO_GET ((bfd_vma (*) (const void *)) swap_abort)
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#define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
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#define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
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#define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
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#define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
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#define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
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const bfd_target netbsd_core_vec =
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{
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"netbsd-core",
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bfd_target_unknown_flavour,
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BFD_ENDIAN_UNKNOWN, /* target byte order */
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BFD_ENDIAN_UNKNOWN, /* target headers byte order */
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(HAS_RELOC | EXEC_P | /* object flags */
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HAS_LINENO | HAS_DEBUG |
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HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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0, /* symbol prefix */
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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data. */
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NO_GET, NO_GETS, NO_PUT, /* 32 bit data. */
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NO_GET, NO_GETS, NO_PUT, /* 16 bit data. */
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NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs. */
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NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs. */
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NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs. */
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{ /* bfd_check_format */
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_bfd_dummy_target, /* unknown format */
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_bfd_dummy_target, /* object file */
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_bfd_dummy_target, /* archive */
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netbsd_core_file_p /* a core file */
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},
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{ /* bfd_set_format */
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bfd_false, bfd_false,
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bfd_false, bfd_false
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},
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{ /* bfd_write_contents */
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bfd_false, bfd_false,
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bfd_false, bfd_false
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},
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BFD_JUMP_TABLE_GENERIC (_bfd_generic),
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BFD_JUMP_TABLE_COPY (_bfd_generic),
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BFD_JUMP_TABLE_CORE (netbsd),
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BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
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BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
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BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
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BFD_JUMP_TABLE_WRITE (_bfd_generic),
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BFD_JUMP_TABLE_LINK (_bfd_nolink),
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BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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NULL,
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(PTR) 0 /* backend_data */
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};
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