1 /* BFD back-end for Motorola 68000 COFF binaries.
2 Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
25 #include "coff/m68k.h"
26 #include "coff/internal.h"
29 #ifndef LYNX_SPECIAL_FN
30 #define LYNX_SPECIAL_FN 0
33 /* The page size is a guess based on ELF. */
34 #define COFF_PAGE_SIZE 0x2000
36 /* Clean up namespace. */
37 #define m68kcoff_howto_table _bfd_m68kcoff_howto_table
38 #define m68k_rtype2howto _bfd_m68kcoff_rtype2howto
39 #define m68k_howto2rtype _bfd_m68kcoff_howto2rtype
41 #ifdef ONLY_DECLARE_RELOCS
42 extern reloc_howto_type m68kcoff_howto_table
[];
44 reloc_howto_type m68kcoff_howto_table
[] =
46 HOWTO(R_RELBYTE
, 0, 0, 8, false, 0, complain_overflow_bitfield
, LYNX_SPECIAL_FN
, "8", true, 0x000000ff,0x000000ff, false),
47 HOWTO(R_RELWORD
, 0, 1, 16, false, 0, complain_overflow_bitfield
, LYNX_SPECIAL_FN
, "16", true, 0x0000ffff,0x0000ffff, false),
48 HOWTO(R_RELLONG
, 0, 2, 32, false, 0, complain_overflow_bitfield
, LYNX_SPECIAL_FN
, "32", true, 0xffffffff,0xffffffff, false),
49 HOWTO(R_PCRBYTE
, 0, 0, 8, true, 0, complain_overflow_signed
, LYNX_SPECIAL_FN
, "DISP8", true, 0x000000ff,0x000000ff, false),
50 HOWTO(R_PCRWORD
, 0, 1, 16, true, 0, complain_overflow_signed
, LYNX_SPECIAL_FN
, "DISP16", true, 0x0000ffff,0x0000ffff, false),
51 HOWTO(R_PCRLONG
, 0, 2, 32, true, 0, complain_overflow_signed
, LYNX_SPECIAL_FN
, "DISP32", true, 0xffffffff,0xffffffff, false),
52 HOWTO(R_RELLONG_NEG
, 0, -2, 32, false, 0, complain_overflow_bitfield
, LYNX_SPECIAL_FN
, "-32", true, 0xffffffff,0xffffffff, false),
54 #endif /* not ONLY_DECLARE_RELOCS */
57 #define BADMAG(x) M68KBADMAG(x)
59 #define M68 1 /* Customize coffcode.h */
61 /* Turn a howto into a reloc number */
63 #ifdef ONLY_DECLARE_RELOCS
64 extern void m68k_rtype2howto
PARAMS ((arelent
*internal
, int relocentry
));
65 extern int m68k_howto2rtype
PARAMS ((CONST
struct reloc_howto_struct
*));
66 extern const reloc_howto_type
*_bfd_coff_m68k_reloc_type_lookup
67 PARAMS ((bfd
*, bfd_reloc_code_real_type
));
70 m68k_rtype2howto(internal
, relocentry
)
76 case R_RELBYTE
: internal
->howto
= m68kcoff_howto_table
+ 0; break;
77 case R_RELWORD
: internal
->howto
= m68kcoff_howto_table
+ 1; break;
78 case R_RELLONG
: internal
->howto
= m68kcoff_howto_table
+ 2; break;
79 case R_PCRBYTE
: internal
->howto
= m68kcoff_howto_table
+ 3; break;
80 case R_PCRWORD
: internal
->howto
= m68kcoff_howto_table
+ 4; break;
81 case R_PCRLONG
: internal
->howto
= m68kcoff_howto_table
+ 5; break;
82 case R_RELLONG_NEG
: internal
->howto
= m68kcoff_howto_table
+ 6; break;
87 m68k_howto2rtype (internal
)
88 CONST
struct reloc_howto_struct
*internal
;
90 if (internal
->pc_relative
)
92 switch (internal
->bitsize
)
94 case 32: return R_PCRLONG
;
95 case 16: return R_PCRWORD
;
96 case 8: return R_PCRBYTE
;
101 switch (internal
->bitsize
)
103 case 32: return R_RELLONG
;
104 case 16: return R_RELWORD
;
105 case 8: return R_RELBYTE
;
111 const reloc_howto_type
*
112 _bfd_coff_m68k_reloc_type_lookup (abfd
, code
)
114 bfd_reloc_code_real_type code
;
118 default: return NULL
;
119 case BFD_RELOC_8
: return m68kcoff_howto_table
+ 0;
120 case BFD_RELOC_16
: return m68kcoff_howto_table
+ 1;
122 case BFD_RELOC_32
: return m68kcoff_howto_table
+ 2;
123 case BFD_RELOC_8_PCREL
: return m68kcoff_howto_table
+ 3;
124 case BFD_RELOC_16_PCREL
: return m68kcoff_howto_table
+ 4;
125 case BFD_RELOC_32_PCREL
: return m68kcoff_howto_table
+ 5;
126 /* FIXME: There doesn't seem to be a code for R_RELLONG_NEG. */
131 #endif /* not ONLY_DECLARE_RELOCS */
133 #define RTYPE2HOWTO(internal, relocentry) \
134 m68k_rtype2howto(internal, (relocentry)->r_type)
136 #define SELECT_RELOC(external, internal) \
137 external.r_type = m68k_howto2rtype(internal);
139 #define coff_bfd_reloc_type_lookup _bfd_coff_m68k_reloc_type_lookup
141 #include "coffcode.h"
153 "coff-m68k", /* name */
155 bfd_target_coff_flavour
,
156 true, /* data byte order is big */
157 true, /* header byte order is big */
159 (HAS_RELOC
| EXEC_P
| /* object flags */
160 HAS_LINENO
| HAS_DEBUG
|
161 HAS_SYMS
| HAS_LOCALS
| WP_TEXT
| D_PAGED
),
163 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
), /* section flags */
164 #ifdef NAMES_HAVE_UNDERSCORE
167 0, /* leading underscore */
169 '/', /* ar_pad_char */
170 15, /* ar_max_namelen */
171 1, /* minimum section alignment */
172 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
173 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
174 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
, /* data */
175 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
176 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
177 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
, /* hdrs */
179 {_bfd_dummy_target
, coff_object_p
, /* bfd_check_format */
180 bfd_generic_archive_p
, _bfd_dummy_target
},
181 {bfd_false
, coff_mkobject
, _bfd_generic_mkarchive
, /* bfd_set_format */
183 {bfd_false
, coff_write_object_contents
, /* bfd_write_contents */
184 _bfd_write_archive_contents
, bfd_false
},
186 BFD_JUMP_TABLE_GENERIC (coff
),
187 BFD_JUMP_TABLE_COPY (coff
),
188 BFD_JUMP_TABLE_CORE (_bfd_nocore
),
189 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff
),
190 BFD_JUMP_TABLE_SYMBOLS (coff
),
191 BFD_JUMP_TABLE_RELOCS (coff
),
192 BFD_JUMP_TABLE_WRITE (coff
),
193 BFD_JUMP_TABLE_LINK (coff
),
194 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic
),