bfd/i386dynix.c

   1 /* BFD back-end for i386 a.out binaries under dynix.
   2    Copyright 1994, 1995, 2001, 2003, 2005, 2007, 2012
   3    Free Software Foundation, Inc.
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22
  23 /* This BFD is currently only tested with gdb, writing object files
  24    may not work.  */
  25
  26 #define TEXT_START_ADDR 4096
  27 #define TARGET_PAGE_SIZE        4096
  28 #define SEGMENT_SIZE    TARGET_PAGE_SIZE
  29
  30 #include "aout/dynix3.h"
  31
  32 #define DEFAULT_ARCH    bfd_arch_i386
  33 #define MACHTYPE_OK(mtype) ((mtype) == M_386 || (mtype) == M_UNKNOWN)
  34
  35 /* Do not "beautify" the CONCAT* macro args.  Traditional C will not
  36    remove whitespace added here, and thus will fail to concatenate
  37    the tokens.  */
  38 #define MY(OP) CONCAT2 (i386dynix_,OP)
  39 #define TARGETNAME "a.out-i386-dynix"
  40 #define NAME(x,y) CONCAT3 (i386dynix,_32_,y)
  41 #define ARCH_SIZE 32
  42 #define NAME_swap_exec_header_in NAME(i386dynix_32_,swap_exec_header_in)
  43 #define MY_get_section_contents aout_32_get_section_contents
  44
  45 /* aoutx.h requires definitions for NMAGIC, BMAGIC and QMAGIC.  */
  46 #define NMAGIC 0
  47 #define BMAGIC OMAGIC
  48 #define QMAGIC XMAGIC
  49
  50 #include "aoutx.h"
  51
  52 /* (Ab)use some fields in the internal exec header to be able to read
  53    executables that contain shared data.  */
  54
  55 #define a_shdata a_tload
  56 #define a_shdrsize a_dload
  57
  58 void
  59 i386dynix_32_swap_exec_header_in (bfd *abfd,
  60                                   struct external_exec *raw_bytes,
  61                                   struct internal_exec *execp)
  62 {
  63   struct external_exec *bytes = (struct external_exec *)raw_bytes;
  64
  65   /* The internal_exec structure has some fields that are unused in this
  66      configuration (IE for i960), so ensure that all such uninitialized
  67      fields are zero'd out.  There are places where two of these structs
  68      are memcmp'd, and thus the contents do matter. */
  69   memset (execp, 0, sizeof (struct internal_exec));
  70   /* Now fill in fields in the execp, from the bytes in the raw data.  */
  71   execp->a_info   = H_GET_32 (abfd, bytes->e_info);
  72   execp->a_text   = GET_WORD (abfd, bytes->e_text);
  73   execp->a_data   = GET_WORD (abfd, bytes->e_data);
  74   execp->a_bss    = GET_WORD (abfd, bytes->e_bss);
  75   execp->a_syms   = GET_WORD (abfd, bytes->e_syms);
  76   execp->a_entry  = GET_WORD (abfd, bytes->e_entry);
  77   execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
  78   execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
  79   execp->a_shdata = GET_WORD (abfd, bytes->e_shdata);
  80   execp->a_shdrsize = GET_WORD (abfd, bytes->e_shdrsize);
  81 }
  82
  83 #include "aout-target.h"