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[deliverable/binutils-gdb.git] / bfd / pc532-mach.c

/* BFD back-end for Mach3/532 a.out-ish binaries.
   Copyright 1990, 1991, 1992, 1994, 1995, 2000, 2001, 2002, 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.  */


/* Written by Ian Dall
              19-Apr-94

   Formerly part of aout-pc532-mach.c. Split out to allow more
   flexibility with multiple formats.  */

/* This architecture has N_TXTOFF and N_TXTADDR defined as if
   N_HEADER_IN_TEXT, but the a_text entry (text size) does not include the
   space for the header. So we have N_HEADER_IN_TEXT defined to
   1 and specially define our own N_TXTSIZE.  */

#define N_HEADER_IN_TEXT(x) 1
#define N_TXTSIZE(x) ((x).a_text)

#define TEXT_START_ADDR 0x10000       /* from old ld */
#define TARGET_PAGE_SIZE 0x1000       /* from old ld,  032 & 532 are really 512/4k */

/* Use a_entry of 0 to distinguish object files from OMAGIC executables */
#define N_TXTADDR(x) \
  (N_MAGIC(x) == OMAGIC ? \
   ((x).a_entry < TEXT_START_ADDR? 0: TEXT_START_ADDR): \
   (N_MAGIC(x) == NMAGIC? TEXT_START_ADDR: \
    TEXT_START_ADDR + EXEC_BYTES_SIZE))

#define	SEGMENT_SIZE	TARGET_PAGE_SIZE

#define N_SHARED_LIB(x) 0
#define SEGMENT_SIZE TARGET_PAGE_SIZE
#define DEFAULT_ARCH bfd_arch_ns32k

/* Do not "beautify" the CONCAT* macro args.  Traditional C will not
   remove whitespace added here, and thus will fail to concatenate
   the tokens.  */
#define MY(OP) CONCAT2 (pc532machaout_,OP)

/* Must be the same as aout-ns32k.c */
#define NAME(x,y) CONCAT3 (ns32kaout,_32_,y)

#define TARGETNAME "a.out-pc532-mach"

#include "sysdep.h"
#include "bfd.h"
#include "libaout.h"
#include "libbfd.h"
#include "aout/aout64.h"

#define MY_bfd_reloc_type_lookup ns32kaout_bfd_reloc_type_lookup

/* libaout doesn't use NAME for these ...  */

#define MY_get_section_contents aout_32_get_section_contents

#define MY_text_includes_header 1

#define MY_exec_header_not_counted 1

reloc_howto_type *ns32kaout_bfd_reloc_type_lookup
  PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));

static bfd_boolean MY(write_object_contents)
  PARAMS ((bfd *abfd));

static bfd_boolean
MY(write_object_contents) (abfd)
     bfd *abfd;
{
  struct external_exec exec_bytes;
  struct internal_exec *execp = exec_hdr (abfd);

  obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;

  BFD_ASSERT (bfd_get_arch (abfd) == bfd_arch_ns32k);
  switch (bfd_get_mach (abfd))
    {
    case 32032:
      N_SET_MACHTYPE (*execp, M_NS32032);
      break;
    case 32532:
    default:
      N_SET_MACHTYPE (*execp, M_NS32532);
      break;
    }
  N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);

  WRITE_HEADERS(abfd, execp);

  return TRUE;
}

#define MY_write_object_contents MY(write_object_contents)

#include "aout-target.h"