coff-apollo.c revision 1.2 
1/* BFD back-end for Apollo 68000 COFF binaries.
2   Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
3   By Troy Rollo (troy@cbme.unsw.edu.au)
4   Based on m68k standard COFF version Written by Cygnus Support.
5
6This file is part of BFD, the Binary File Descriptor library.
7
8This program is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2 of the License, or
11(at your option) any later version.
12
13This program is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with this program; if not, write to the Free Software
20Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
21
22#include "bfd.h"
23#include "sysdep.h"
24#include "libbfd.h"
25#include "obstack.h"
26#include "coff/apollo.h"
27#include "coff/internal.h"
28#include "libcoff.h"
29
30#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
31
32#ifdef ONLY_DECLARE_RELOCS
33extern reloc_howto_type apollocoff_howto_table[];
34#else
35reloc_howto_type apollocoff_howto_table[] =
36{
37  HOWTO(R_RELBYTE,	       0,  0,  	8,  false, 0, complain_overflow_bitfield, 0, "8",	true, 0x000000ff,0x000000ff, false),
38  HOWTO(R_RELWORD,	       0,  1, 	16, false, 0, complain_overflow_bitfield, 0, "16",	true, 0x0000ffff,0x0000ffff, false),
39  HOWTO(R_RELLONG,	       0,  2, 	32, false, 0, complain_overflow_bitfield, 0, "32",	true, 0xffffffff,0xffffffff, false),
40  HOWTO(R_PCRBYTE,	       0,  0, 	8,  true,  0, complain_overflow_signed, 0, "DISP8",    true, 0x000000ff,0x000000ff, false),
41  HOWTO(R_PCRWORD,	       0,  1, 	16, true,  0, complain_overflow_signed, 0, "DISP16",   true, 0x0000ffff,0x0000ffff, false),
42  HOWTO(R_PCRLONG,	       0,  2, 	32, true,  0, complain_overflow_signed, 0, "DISP32",   true, 0xffffffff,0xffffffff, false),
43  HOWTO(R_RELLONG_NEG,	       0,  -2, 	32, false, 0, complain_overflow_bitfield, 0, "-32",	true, 0xffffffff,0xffffffff, false),
44};
45#endif /* not ONLY_DECLARE_RELOCS */
46
47#ifndef BADMAG
48#define BADMAG(x) M68KBADMAG(x)
49#endif
50#define APOLLO_M68 1		/* Customize coffcode.h */
51
52/* Turn a howto into a reloc number */
53
54#ifdef ONLY_DECLARE_RELOCS
55extern void apollo_rtype2howto PARAMS ((arelent *internal, int relocentry));
56extern int apollo_howto2rtype PARAMS ((reloc_howto_type *));
57#else
58void
59apollo_rtype2howto(internal, relocentry)
60     arelent *internal;
61     int relocentry;
62{
63  switch (relocentry)
64  {
65   case R_RELBYTE:	internal->howto = apollocoff_howto_table + 0; break;
66   case R_RELWORD:	internal->howto = apollocoff_howto_table + 1; break;
67   case R_RELLONG:	internal->howto = apollocoff_howto_table + 2; break;
68   case R_PCRBYTE:	internal->howto = apollocoff_howto_table + 3; break;
69   case R_PCRWORD:	internal->howto = apollocoff_howto_table + 4; break;
70   case R_PCRLONG:	internal->howto = apollocoff_howto_table + 5; break;
71   case R_RELLONG_NEG:	internal->howto = apollocoff_howto_table + 6; break;
72  }
73}
74
75int
76apollo_howto2rtype (internal)
77     reloc_howto_type *internal;
78{
79  if (internal->pc_relative)
80  {
81    switch (internal->bitsize)
82    {
83     case 32: return R_PCRLONG;
84     case 16: return R_PCRWORD;
85     case 8: return R_PCRBYTE;
86    }
87  }
88  else
89  {
90    switch (internal->bitsize)
91     {
92      case 32: return R_RELLONG;
93      case 16: return R_RELWORD;
94      case 8: return R_RELBYTE;
95     }
96  }
97  return R_RELLONG;
98}
99#endif /* not ONLY_DECLARE_RELOCS */
100
101#define RTYPE2HOWTO(internal, relocentry) \
102  apollo_rtype2howto(internal, (relocentry)->r_type)
103
104#define SELECT_RELOC(external, internal) \
105  external.r_type = apollo_howto2rtype(internal);
106
107#include "coffcode.h"
108
109const bfd_target
110#ifdef TARGET_SYM
111  TARGET_SYM =
112#else
113  apollocoff_vec =
114#endif
115{
116#ifdef TARGET_NAME
117  TARGET_NAME,
118#else
119  "apollo-m68k",			/* name */
120#endif
121  bfd_target_coff_flavour,
122  BFD_ENDIAN_BIG,		/* data byte order is big */
123  BFD_ENDIAN_BIG,		/* header byte order is big */
124
125  (HAS_RELOC | EXEC_P |		/* object flags */
126   HAS_LINENO | HAS_DEBUG |
127   HAS_SYMS | HAS_LOCALS | WP_TEXT),
128
129  (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
130#ifdef NAMES_HAVE_UNDERSCORE
131  '_',
132#else
133  0,				/* leading underscore */
134#endif
135  '/',				/* ar_pad_char */
136  15,				/* ar_max_namelen */
137  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
138     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
139     bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
140  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
141     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
142     bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
143
144 {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
145   bfd_generic_archive_p, _bfd_dummy_target},
146 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
147   bfd_false},
148 {bfd_false, coff_write_object_contents, /* bfd_write_contents */
149   _bfd_write_archive_contents, bfd_false},
150
151     BFD_JUMP_TABLE_GENERIC (coff),
152     BFD_JUMP_TABLE_COPY (coff),
153     BFD_JUMP_TABLE_CORE (_bfd_nocore),
154     BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
155     BFD_JUMP_TABLE_SYMBOLS (coff),
156     BFD_JUMP_TABLE_RELOCS (coff),
157     BFD_JUMP_TABLE_WRITE (coff),
158     BFD_JUMP_TABLE_LINK (coff),
159     BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
160
161  COFF_SWAP_TABLE
162 };
163