gnu/dist/gdb6/bfd/pc532-mach.c

   1 /* BFD back-end for Mach3/532 a.out-ish binaries.
   2    Copyright 1990, 1991, 1992, 1994, 1995, 2000, 2001, 2002
   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 2 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, MA 02110-1301, USA.  */
  20
  21 /* Written by Ian Dall
  22  *            19-Apr-94
  23  *
  24  * Formerly part of aout-pc532-mach.c. Split out to allow more
  25  * flexibility with multiple formats.
  26  *
  27  */
  28 /* This architecture has N_TXTOFF and N_TXTADDR defined as if
  29  * N_HEADER_IN_TEXT, but the a_text entry (text size) does not include the
  30  * space for the header. So we have N_HEADER_IN_TEXT defined to
  31  * 1 and specially define our own N_TXTSIZE
  32  */
  33
  34 #define N_HEADER_IN_TEXT(x) 1
  35 #define N_TXTSIZE(x) ((x).a_text)
  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 /* Do not "beautify" the CONCAT* macro args.  Traditional C will not
  54    remove whitespace added here, and thus will fail to concatenate
  55    the tokens.  */
  56 #define MY(OP) CONCAT2 (pc532machaout_,OP)
  57
  58 /* Must be the same as aout-ns32k.c */
  59 #define NAME(x,y) CONCAT3 (ns32kaout,_32_,y)
  60
  61 #define TARGETNAME "a.out-pc532-mach"
  62
  63 #include "bfd.h"
  64 #include "sysdep.h"
  65 #include "libaout.h"
  66 #include "libbfd.h"
  67 #include "aout/aout64.h"
  68
  69 #define MY_bfd_reloc_type_lookup ns32kaout_bfd_reloc_type_lookup
  70
  71 /* libaout doesn't use NAME for these ...  */
  72
  73 #define MY_get_section_contents aout_32_get_section_contents
  74
  75 #define MY_text_includes_header 1
  76
  77 #define MY_exec_header_not_counted 1
  78
  79 reloc_howto_type *ns32kaout_bfd_reloc_type_lookup
  80   PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
  81
  82 static bfd_boolean MY(write_object_contents)
  83   PARAMS ((bfd *abfd));
  84
  85 static bfd_boolean
  86 MY(write_object_contents) (abfd)
  87      bfd *abfd;
  88 {
  89   struct external_exec exec_bytes;
  90   struct internal_exec *execp = exec_hdr (abfd);
  91
  92   obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
  93
  94   BFD_ASSERT (bfd_get_arch (abfd) == bfd_arch_ns32k);
  95   switch (bfd_get_mach (abfd))
  96     {
  97     case 32032:
  98       N_SET_MACHTYPE (*execp, M_NS32032);
  99       break;
 100     case 32532:
 101     default:
 102       N_SET_MACHTYPE (*execp, M_NS32532);
 103       break;
 104     }
 105   N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);
 106
 107   WRITE_HEADERS(abfd, execp);
 108
 109   return TRUE;
 110 }
 111
 112 #define MY_write_object_contents MY(write_object_contents)
 113
 114 #include "aout-target.h"