bfd/i386dynix.c

   1 /* BFD back-end for i386 a.out binaries under dynix.
   2    Copyright (C) 1994, 1995 Free Software Foundation, Inc.
   3
   4 This file is part of BFD, the Binary File Descriptor library.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19
  20 /* This BFD is currently only tested with gdb, writing object files
  21    may not work.  */
  22
  23 #define BYTES_IN_WORD   4
  24
  25 #define TEXT_START_ADDR 4096
  26 #define TARGET_PAGE_SIZE        4096
  27 #define SEGMENT_SIZE    TARGET_PAGE_SIZE
  28
  29 #include "aout/dynix3.h"
  30
  31 #define DEFAULT_ARCH    bfd_arch_i386
  32 #define MACHTYPE_OK(mtype) ((mtype) == M_386 || (mtype) == M_UNKNOWN)
  33
  34 #define MY(OP) CAT(i386dynix_,OP)
  35 #define TARGETNAME "a.out-i386-dynix"
  36 #define NAME(x,y) CAT3(i386dynix,_32_,y)
  37 #define ARCH_SIZE 32
  38 #define NAME_swap_exec_header_in NAME(i386dynix_32_,swap_exec_header_in)
  39 #define MY_get_section_contents aout_32_get_section_contents
  40
  41 /* aoutx.h requires definitions for NMAGIC, BMAGIC and QMAGIC.  */
  42 #define NMAGIC 0
  43 #define BMAGIC OMAGIC
  44 #define QMAGIC XMAGIC
  45
  46 #include "aoutx.h"
  47
  48 /* (Ab)use some fields in the internal exec header to be able to read
  49    executables that contain shared data.  */
  50
  51 #define a_shdata a_tload
  52 #define a_shdrsize a_dload
  53
  54 void
  55 i386dynix_32_swap_exec_header_in (abfd, raw_bytes, execp)
  56      bfd *abfd;
  57      struct external_exec *raw_bytes;
  58      struct internal_exec *execp;
  59 {
  60   struct external_exec *bytes = (struct external_exec *)raw_bytes;
  61
  62   /* The internal_exec structure has some fields that are unused in this
  63      configuration (IE for i960), so ensure that all such uninitialized
  64      fields are zero'd out.  There are places where two of these structs
  65      are memcmp'd, and thus the contents do matter. */
  66   memset ((PTR) execp, 0, sizeof (struct internal_exec));
  67   /* Now fill in fields in the execp, from the bytes in the raw data.  */
  68   execp->a_info   = bfd_h_get_32 (abfd, bytes->e_info);
  69   execp->a_text   = GET_WORD (abfd, bytes->e_text);
  70   execp->a_data   = GET_WORD (abfd, bytes->e_data);
  71   execp->a_bss    = GET_WORD (abfd, bytes->e_bss);
  72   execp->a_syms   = GET_WORD (abfd, bytes->e_syms);
  73   execp->a_entry  = GET_WORD (abfd, bytes->e_entry);
  74   execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
  75   execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
  76   execp->a_shdata = GET_WORD (abfd, bytes->e_shdata);
  77   execp->a_shdrsize = GET_WORD (abfd, bytes->e_shdrsize);
  78 }
  79
  80 #include "aout-target.h"