296 lines
8.5 KiB
C
296 lines
8.5 KiB
C
/* BFD back-end for HPPA BSD core files.
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Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002
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Free Software Foundation, Inc.
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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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Written by the Center for Software Science at the University of Utah
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and by Cygnus Support.
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The core file structure for the Utah 4.3BSD and OSF1 ports on the
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PA is a mix between traditional cores and hpux cores -- just
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different enough that supporting this format would tend to add
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gross hacks to trad-core.c or hpux-core.c. So instead we keep any
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gross hacks isolated to this file. */
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/* This file can only be compiled on systems which use HPPA-BSD style
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core files.
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I would not expect this to be of use to any other host/target, but
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you never know. */
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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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#if defined (HOST_HPPABSD)
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#include "machine/vmparam.h"
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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 <machine/reg.h>
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#include <sys/user.h> /* After a.out.h */
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#include <sys/file.h>
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static asection *make_bfd_asection
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PARAMS ((bfd *, const char *, flagword, bfd_size_type, file_ptr,
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unsigned int));
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static const bfd_target *hppabsd_core_core_file_p
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PARAMS ((bfd *));
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static char *hppabsd_core_core_file_failing_command
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PARAMS ((bfd *));
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static int hppabsd_core_core_file_failing_signal
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PARAMS ((bfd *));
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static bfd_boolean hppabsd_core_core_file_matches_executable_p
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PARAMS ((bfd *, bfd *));
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static void swap_abort
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PARAMS ((void));
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/* These are stored in the bfd's tdata. */
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struct hppabsd_core_struct
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{
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int sig;
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char cmd[MAXCOMLEN + 1];
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asection *data_section;
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asection *stack_section;
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asection *reg_section;
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};
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#define core_hdr(bfd) ((bfd)->tdata.hppabsd_core_data)
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#define core_signal(bfd) (core_hdr(bfd)->sig)
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#define core_command(bfd) (core_hdr(bfd)->cmd)
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#define core_datasec(bfd) (core_hdr(bfd)->data_section)
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#define core_stacksec(bfd) (core_hdr(bfd)->stack_section)
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#define core_regsec(bfd) (core_hdr(bfd)->reg_section)
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static asection *
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make_bfd_asection (abfd, name, flags, _raw_size, offset, alignment_power)
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bfd *abfd;
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const char *name;
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flagword flags;
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bfd_size_type _raw_size;
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file_ptr offset;
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unsigned int alignment_power;
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{
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asection *asect;
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asect = bfd_make_section (abfd, name);
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if (!asect)
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return NULL;
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asect->flags = flags;
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asect->_raw_size = _raw_size;
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asect->filepos = offset;
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asect->alignment_power = alignment_power;
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return asect;
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}
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static const bfd_target *
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hppabsd_core_core_file_p (abfd)
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bfd *abfd;
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{
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int val;
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struct user u;
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struct hppabsd_core_struct *coredata;
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int clicksz;
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/* Try to read in the u-area. We will need information from this
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to know how to grok the rest of the core structures. */
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val = bfd_bread ((void *) &u, (bfd_size_type) sizeof u, abfd);
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if (val != sizeof u)
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{
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if (bfd_get_error () != bfd_error_system_call)
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bfd_set_error (bfd_error_wrong_format);
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return NULL;
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}
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/* Get the page size out of the u structure. This will be different
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for PA 1.0 machines and PA 1.1 machines. Yuk! */
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clicksz = u.u_pcb.pcb_pgsz;
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/* clicksz must be a power of two >= 2k. */
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if (clicksz < 0x800
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|| clicksz != (clicksz & -clicksz))
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{
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bfd_set_error (bfd_error_wrong_format);
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return NULL;
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}
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/* Sanity checks. Make sure the size of the core file matches the
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the size computed from information within the core itself. */
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{
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FILE *stream = bfd_cache_lookup (abfd);
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struct stat statbuf;
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if (stream == NULL || fstat (fileno (stream), &statbuf) < 0)
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{
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bfd_set_error (bfd_error_system_call);
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return NULL;
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}
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if (NBPG * (UPAGES + u.u_dsize + u.u_ssize) > statbuf.st_size)
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{
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bfd_set_error (bfd_error_file_truncated);
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return NULL;
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}
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if (clicksz * (UPAGES + u.u_dsize + u.u_ssize) < statbuf.st_size)
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{
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/* The file is too big. Maybe it's not a core file
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or we otherwise have bad values for u_dsize and u_ssize). */
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bfd_set_error (bfd_error_wrong_format);
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return NULL;
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}
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}
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/* OK, we believe you. You're a core file (sure, sure). */
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coredata = (struct hppabsd_core_struct *)
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bfd_zalloc (abfd, (bfd_size_type) sizeof (struct hppabsd_core_struct));
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if (!coredata)
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return NULL;
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/* Make the core data and available via the tdata part of the BFD. */
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abfd->tdata.hppabsd_core_data = coredata;
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/* Create the sections. */
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core_stacksec (abfd) = make_bfd_asection (abfd, ".stack",
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SEC_ALLOC + SEC_HAS_CONTENTS,
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clicksz * u.u_ssize,
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NBPG * (USIZE + KSTAKSIZE)
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+ clicksz * u.u_dsize, 2);
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if (core_stacksec (abfd) == NULL)
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goto fail;
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core_stacksec (abfd)->vma = USRSTACK;
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core_datasec (abfd) = make_bfd_asection (abfd, ".data",
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SEC_ALLOC + SEC_LOAD
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+ SEC_HAS_CONTENTS,
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clicksz * u.u_dsize,
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NBPG * (USIZE + KSTAKSIZE), 2);
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if (core_datasec (abfd) == NULL)
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goto fail;
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core_datasec (abfd)->vma = UDATASEG;
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core_regsec (abfd) = make_bfd_asection (abfd, ".reg",
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SEC_HAS_CONTENTS,
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KSTAKSIZE * NBPG,
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NBPG * USIZE, 2);
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if (core_regsec (abfd) == NULL)
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goto fail;
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core_regsec (abfd)->vma = 0;
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strncpy (core_command (abfd), u.u_comm, MAXCOMLEN + 1);
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core_signal (abfd) = u.u_code;
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return abfd->xvec;
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fail:
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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 NULL;
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}
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static char *
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hppabsd_core_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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}
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/* ARGSUSED */
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static int
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hppabsd_core_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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}
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/* ARGSUSED */
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static bfd_boolean
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hppabsd_core_core_file_matches_executable_p (core_bfd, exec_bfd)
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bfd *core_bfd, *exec_bfd;
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{
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/* There's no way to know this... */
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return TRUE;
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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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/* This way doesn't require any declaration for ANSI to fuck up. */
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abort ();
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}
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#define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort )
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#define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
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#define NO_SIGNED_GET \
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((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort )
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const bfd_target hppabsd_core_vec =
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{
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"hppabsd-core",
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bfd_target_unknown_flavour,
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BFD_ENDIAN_BIG, /* target byte order */
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BFD_ENDIAN_BIG, /* 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_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
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NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
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NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
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NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
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NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
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NO_GET, NO_SIGNED_GET, 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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hppabsd_core_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 (hppabsd_core),
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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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#endif
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