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/* BFD back-end for OSF/1 core files.

   Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002, 2003, 2004, 2006,

   2007 Free Software Foundation, 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 3 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.  */

/* This file can only be compiled on systems which use OSF/1 style

   core files.  */

#include "sysdep.h"

#include "bfd.h"

#include "libbfd.h"

#include <sys/user.h>

#ifdef OSF_CORE

#include <sys/core.h>

#endif

/* forward declarations */

static asection *make_bfd_asection

  PARAMS ((bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr));

static const bfd_target *osf_core_core_file_p

  PARAMS ((bfd *));

static char *osf_core_core_file_failing_command

  PARAMS ((bfd *));

static int osf_core_core_file_failing_signal

  PARAMS ((bfd *));

#define osf_core_core_file_matches_executable_p generic_core_file_matches_executable_p

static void swap_abort

  PARAMS ((void));

/* These are stored in the bfd's tdata */

struct osf_core_struct

{

  int sig;

  char cmd[MAXCOMLEN + 1];

};

#define core_hdr(bfd) ((bfd)->tdata.osf_core_data)

#define core_signal(bfd) (core_hdr(bfd)->sig)

#define core_command(bfd) (core_hdr(bfd)->cmd)

static asection *

make_bfd_asection (abfd, name, flags, size, vma, filepos)

     bfd *abfd;

     const char *name;

     flagword flags;

     bfd_size_type size;

     bfd_vma vma;

     file_ptr filepos;

{

  asection *asect;

  asect = bfd_make_section_anyway_with_flags (abfd, name, flags);

  if (!asect)

    return NULL;

  asect->size = size;

  asect->vma = vma;

  asect->filepos = filepos;

  asect->alignment_power = 8;

  return asect;

}

static const bfd_target *

osf_core_core_file_p (abfd)

     bfd *abfd;

{

  int val;

  int i;

  char *secname;

  struct core_filehdr core_header;

  bfd_size_type amt;

  amt = sizeof core_header;

  val = bfd_bread ((PTR) &core_header, amt, abfd);

  if (val != sizeof core_header)

    return NULL;

  if (! CONST_STRNEQ (core_header.magic, "Core"))

    return NULL;

  core_hdr (abfd) = (struct osf_core_struct *)

    bfd_zalloc (abfd, (bfd_size_type) sizeof (struct osf_core_struct));

  if (!core_hdr (abfd))

    return NULL;

  strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1);

  core_signal (abfd) = core_header.signo;

  for (i = 0; i < core_header.nscns; i++)

    {

      struct core_scnhdr core_scnhdr;

      flagword flags;

      amt = sizeof core_scnhdr;

      val = bfd_bread ((PTR) &core_scnhdr, amt, abfd);

      if (val != sizeof core_scnhdr)

        break;

      /* Skip empty sections.  */

      if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0)

        continue;

      switch (core_scnhdr.scntype)

        {

        case SCNRGN:

          secname = ".data";

          flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;

          break;

        case SCNSTACK:

          secname = ".stack";

          flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;

          break;

        case SCNREGS:

          secname = ".reg";

          flags = SEC_HAS_CONTENTS;

          break;

        default:

          (*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"),

                                 core_scnhdr.scntype);

          continue;

        }

      if (!make_bfd_asection (abfd, secname, flags,

                              (bfd_size_type) core_scnhdr.size,

                              (bfd_vma) core_scnhdr.vaddr,

                              (file_ptr) core_scnhdr.scnptr))

        goto fail;

    }

  /* OK, we believe you.  You're a core file (sure, sure).  */

  return abfd->xvec;

 fail:

  bfd_release (abfd, core_hdr (abfd));

  core_hdr (abfd) = NULL;

  bfd_section_list_clear (abfd);

  return NULL;

}

static char *

osf_core_core_file_failing_command (abfd)

     bfd *abfd;

{

  return core_command (abfd);

}

static int

osf_core_core_file_failing_signal (abfd)

     bfd *abfd;

{

  return core_signal (abfd);

}

/* If somebody calls any byte-swapping routines, shoot them.  */

static void

swap_abort()

{

  abort(); /* This way doesn't require any declaration for ANSI to fuck up */

}

#define NO_GET ((bfd_vma (*) (const void *)) swap_abort)

#define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)

#define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)

#define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)

#define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)

#define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)

const bfd_target osf_core_vec =

  {

    "osf-core",

    bfd_target_unknown_flavour,

    BFD_ENDIAN_LITTLE,          /* target byte order */

    BFD_ENDIAN_LITTLE,          /* 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_GET64, NO_GETS64, NO_PUT64,      /* 64 bit data */

    NO_GET, NO_GETS, NO_PUT,            /* 32 bit data */

    NO_GET, NO_GETS, NO_PUT,            /* 16 bit data */

    NO_GET64, NO_GETS64, NO_PUT64,      /* 64 bit hdrs */

    NO_GET, NO_GETS, NO_PUT,            /* 32 bit hdrs */

    NO_GET, NO_GETS, NO_PUT,            /* 16 bit hdrs */

    {                           /* bfd_check_format */

      _bfd_dummy_target,                /* unknown format */

      _bfd_dummy_target,                /* object file */

      _bfd_dummy_target,                /* archive */

      osf_core_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

    },

    BFD_JUMP_TABLE_GENERIC (_bfd_generic),

    BFD_JUMP_TABLE_COPY (_bfd_generic),

    BFD_JUMP_TABLE_CORE (osf_core),

    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,

    (PTR) 0                      /* backend_data */

  };