bfd/pc532-mach.c

   1 /* BFD back-end for Mach3/532 a.out-ish binaries.
   2    Copyright (C) 1990, 1991, 1992, 1994 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 /* Written by Ian Dall
  21  *            19-Apr-94
  22  *
  23  * Formerly part of aout-pc532-mach.c. Split out to allow more
  24  * flexibility with multiple formats.
  25  *
  26  */
  27 /* This architecture has N_TXTOFF and N_TXTADDR defined as if
  28  * N_HEADER_IN_TEXT, but the a_text entry (text size) does not include the
  29  * space for the header. So we have N_HEADER_IN_TEXT defined to
  30  * 1 and specially define our own N_TXTSIZE
  31  */
  32
  33 #define N_HEADER_IN_TEXT(x) 1
  34 #define N_TXTSIZE(x) ((x).a_text)
  35
  36
  37 #define TEXT_START_ADDR 0x10000       /* from old ld */
  38 #define TARGET_PAGE_SIZE 0x1000       /* from old ld,  032 & 532 are really 512/4k */
  39
  40 /* Use a_entry of 0 to distinguish object files from OMAGIC executables */
  41 #define N_TXTADDR(x) \
  42   (N_MAGIC(x) == OMAGIC ? \
  43    ((x).a_entry < TEXT_START_ADDR? 0: TEXT_START_ADDR): \
  44    (N_MAGIC(x) == NMAGIC? TEXT_START_ADDR: \
  45     TEXT_START_ADDR + EXEC_BYTES_SIZE))
  46
  47 #define SEGMENT_SIZE    TARGET_PAGE_SIZE
  48
  49 #define N_SHARED_LIB(x) 0
  50 #define SEGMENT_SIZE TARGET_PAGE_SIZE
  51 #define DEFAULT_ARCH bfd_arch_ns32k
  52
  53 #define MY(OP) CAT(pc532machaout_,OP)
  54
  55 /* Must be the same as aout-ns32k.c */
  56 #define NAME(x,y) CAT3(ns32kaout,_32_,y)
  57
  58 #define TARGETNAME "a.out-pc532-mach"
  59
  60 #include "bfd.h"
  61 #include "sysdep.h"
  62 #include "libaout.h"
  63 #include "libbfd.h"
  64 #include "aout/aout64.h"
  65
  66 /* We can`t use the MYNS macro here for cpp reasons too subtle for me -- IWD */
  67
  68 #define MY_bfd_reloc_type_lookup ns32kaout_bfd_reloc_type_lookup
  69
  70 /* libaout doesn't use NAME for these ... */
  71
  72 #define MY_get_section_contents aout_32_get_section_contents
  73
  74 #define MY_text_includes_header 1
  75
  76 #define MY_exec_header_not_counted 1
  77
  78 #define MYNSX(OP) CAT(ns32kaout_,OP)
  79 reloc_howto_type *
  80 MYNSX(bfd_reloc_type_lookup)
  81   PARAMS((bfd *abfd AND
  82           bfd_reloc_code_real_type code));
  83
  84 boolean
  85 MYNSX(write_object_contents)
  86   PARAMS((bfd *abfd));
  87
  88 static boolean
  89 MY(write_object_contents) (abfd)
  90 bfd *abfd;
  91 {
  92   struct external_exec exec_bytes;
  93   struct internal_exec *execp = exec_hdr (abfd);
  94
  95 #if CHOOSE_RELOC_SIZE
  96   CHOOSE_RELOC_SIZE(abfd);
  97 #else
  98   obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
  99 #endif
 100
 101   BFD_ASSERT (bfd_get_arch (abfd) == bfd_arch_ns32k);
 102   switch (bfd_get_mach (abfd))
 103     {
 104     case 32032:
 105       N_SET_MACHTYPE (*execp, M_NS32032);
 106       break;
 107     case 32532:
 108     default:
 109       N_SET_MACHTYPE (*execp, M_NS32532);
 110       break;
 111     }
 112   N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);
 113
 114   WRITE_HEADERS(abfd, execp);
 115
 116   return true;
 117 }
 118
 119 #define MY_write_object_contents MY(write_object_contents)
 120
 121 #include "aout-target.h"