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 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
35 /* The page size is a guess based on ELF. */
36 #define COFF_PAGE_SIZE 0x2000
38 /* Clean up namespace. */
39 #define m68kcoff_howto_table _bfd_m68kcoff_howto_table
40 #define m68k_rtype2howto _bfd_m68kcoff_rtype2howto
41 #define m68k_howto2rtype _bfd_m68kcoff_howto2rtype
42 #define m68k_reloc_type_lookup _bfd_m68kcoff_reloc_type_lookup
44 #ifdef ONLY_DECLARE_RELOCS
45 extern reloc_howto_type m68kcoff_howto_table[];
47 reloc_howto_type m68kcoff_howto_table[] =
49 HOWTO(R_RELBYTE, 0, 0, 8, false, 0, complain_overflow_bitfield, LYNX_SPECIAL_FN, "8", true, 0x000000ff,0x000000ff, false),
50 HOWTO(R_RELWORD, 0, 1, 16, false, 0, complain_overflow_bitfield, LYNX_SPECIAL_FN, "16", true, 0x0000ffff,0x0000ffff, false),
51 HOWTO(R_RELLONG, 0, 2, 32, false, 0, complain_overflow_bitfield, LYNX_SPECIAL_FN, "32", true, 0xffffffff,0xffffffff, false),
52 HOWTO(R_PCRBYTE, 0, 0, 8, true, 0, complain_overflow_signed, LYNX_SPECIAL_FN, "DISP8", true, 0x000000ff,0x000000ff, false),
53 HOWTO(R_PCRWORD, 0, 1, 16, true, 0, complain_overflow_signed, LYNX_SPECIAL_FN, "DISP16", true, 0x0000ffff,0x0000ffff, false),
54 HOWTO(R_PCRLONG, 0, 2, 32, true, 0, complain_overflow_signed, LYNX_SPECIAL_FN, "DISP32", true, 0xffffffff,0xffffffff, false),
55 HOWTO(R_RELLONG_NEG, 0, -2, 32, false, 0, complain_overflow_bitfield, LYNX_SPECIAL_FN, "-32", true, 0xffffffff,0xffffffff, false),
57 #endif /* not ONLY_DECLARE_RELOCS */
60 #define BADMAG(x) M68KBADMAG(x)
62 #define M68 1 /* Customize coffcode.h */
64 /* Turn a howto into a reloc number */
66 #ifdef ONLY_DECLARE_RELOCS
67 extern void m68k_rtype2howto PARAMS ((arelent *internal, int relocentry));
68 extern int m68k_howto2rtype PARAMS ((CONST struct reloc_howto_struct *));
69 extern reloc_howto_type *m68k_reloc_type_lookup
70 PARAMS ((bfd *, bfd_reloc_code_real_type));
73 m68k_rtype2howto(internal, relocentry)
79 case R_RELBYTE: internal->howto = m68kcoff_howto_table + 0; break;
80 case R_RELWORD: internal->howto = m68kcoff_howto_table + 1; break;
81 case R_RELLONG: internal->howto = m68kcoff_howto_table + 2; break;
82 case R_PCRBYTE: internal->howto = m68kcoff_howto_table + 3; break;
83 case R_PCRWORD: internal->howto = m68kcoff_howto_table + 4; break;
84 case R_PCRLONG: internal->howto = m68kcoff_howto_table + 5; break;
85 case R_RELLONG_NEG: internal->howto = m68kcoff_howto_table + 6; break;
90 m68k_howto2rtype (internal)
91 CONST struct reloc_howto_struct *internal;
93 if (internal->pc_relative)
95 switch (internal->bitsize)
97 case 32: return R_PCRLONG;
98 case 16: return R_PCRWORD;
99 case 8: return R_PCRBYTE;
104 switch (internal->bitsize)
106 case 32: return R_RELLONG;
107 case 16: return R_RELWORD;
108 case 8: return R_RELBYTE;
115 m68k_reloc_type_lookup (abfd, code)
117 bfd_reloc_code_real_type code;
121 default: return NULL;
122 case BFD_RELOC_8: return m68kcoff_howto_table + 0;
123 case BFD_RELOC_16: return m68kcoff_howto_table + 1;
125 case BFD_RELOC_32: return m68kcoff_howto_table + 2;
126 case BFD_RELOC_8_PCREL: return m68kcoff_howto_table + 3;
127 case BFD_RELOC_16_PCREL: return m68kcoff_howto_table + 4;
128 case BFD_RELOC_32_PCREL: return m68kcoff_howto_table + 5;
129 /* FIXME: There doesn't seem to be a code for R_RELLONG_NEG. */
134 #endif /* not ONLY_DECLARE_RELOCS */
136 #define RTYPE2HOWTO(internal, relocentry) \
137 m68k_rtype2howto(internal, (relocentry)->r_type)
139 #define SELECT_RELOC(external, internal) \
140 external.r_type = m68k_howto2rtype(internal);
142 #define coff_bfd_reloc_type_lookup m68k_reloc_type_lookup
144 #define coff_relocate_section _bfd_coff_generic_relocate_section
146 #include "coffcode.h"
158 "coff-m68k", /* name */
160 bfd_target_coff_flavour,
161 true, /* data byte order is big */
162 true, /* header byte order is big */
164 (HAS_RELOC | EXEC_P | /* object flags */
165 HAS_LINENO | HAS_DEBUG |
166 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
168 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
169 #ifdef NAMES_HAVE_UNDERSCORE
172 0, /* leading underscore */
174 '/', /* ar_pad_char */
175 15, /* ar_max_namelen */
176 1, /* minimum section alignment */
177 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
178 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
179 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
180 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
181 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
182 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
184 {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
185 bfd_generic_archive_p, _bfd_dummy_target},
186 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
188 {bfd_false, coff_write_object_contents, /* bfd_write_contents */
189 _bfd_write_archive_contents, bfd_false},
191 BFD_JUMP_TABLE_GENERIC (coff),
192 BFD_JUMP_TABLE_COPY (coff),
193 BFD_JUMP_TABLE_CORE (_bfd_nocore),
194 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
195 BFD_JUMP_TABLE_SYMBOLS (coff),
196 BFD_JUMP_TABLE_RELOCS (coff),
197 BFD_JUMP_TABLE_WRITE (coff),
198 BFD_JUMP_TABLE_LINK (coff),
199 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),